1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2016 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
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 0x1f007ff, /* 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 0x1f007ff, /* 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 0x1f007ff, /* 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 0x1f007ff, /* 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 0x1f007ff, /* 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 0x1f007ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1659 HOWTO (R_PPC_IRELATIVE, /* type */
1661 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_dont, /* complain_on_overflow */
1666 ppc_elf_unhandled_reloc, /* special_function */
1667 "R_PPC_IRELATIVE", /* name */
1668 FALSE, /* partial_inplace */
1670 0xffffffff, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* A 16 bit relative relocation. */
1674 HOWTO (R_PPC_REL16, /* type */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1678 TRUE, /* pc_relative */
1680 complain_overflow_signed, /* complain_on_overflow */
1681 bfd_elf_generic_reloc, /* special_function */
1682 "R_PPC_REL16", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffff, /* dst_mask */
1686 TRUE), /* pcrel_offset */
1688 /* A 16 bit relative relocation without overflow. */
1689 HOWTO (R_PPC_REL16_LO, /* type */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 TRUE, /* pc_relative */
1695 complain_overflow_dont,/* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16_LO", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1703 /* The high order 16 bits of a relative address. */
1704 HOWTO (R_PPC_REL16_HI, /* type */
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1708 TRUE, /* pc_relative */
1710 complain_overflow_dont, /* complain_on_overflow */
1711 bfd_elf_generic_reloc, /* special_function */
1712 "R_PPC_REL16_HI", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1718 /* The high order 16 bits of a relative address, plus 1 if the contents of
1719 the low 16 bits, treated as a signed number, is negative. */
1720 HOWTO (R_PPC_REL16_HA, /* type */
1721 16, /* rightshift */
1722 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 TRUE, /* pc_relative */
1726 complain_overflow_dont, /* complain_on_overflow */
1727 ppc_elf_addr16_ha_reloc, /* special_function */
1728 "R_PPC_REL16_HA", /* name */
1729 FALSE, /* partial_inplace */
1731 0xffff, /* dst_mask */
1732 TRUE), /* pcrel_offset */
1734 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1735 HOWTO (R_PPC_REL16DX_HA, /* type */
1736 16, /* rightshift */
1737 2, /* size (0 = byte, 1 = short, 2 = long) */
1739 TRUE, /* pc_relative */
1741 complain_overflow_signed, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc, /* special_function */
1743 "R_PPC_REL16DX_HA", /* name */
1744 FALSE, /* partial_inplace */
1746 0x1fffc1, /* dst_mask */
1747 TRUE), /* pcrel_offset */
1749 /* GNU extension to record C++ vtable hierarchy. */
1750 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1752 0, /* size (0 = byte, 1 = short, 2 = long) */
1754 FALSE, /* pc_relative */
1756 complain_overflow_dont, /* complain_on_overflow */
1757 NULL, /* special_function */
1758 "R_PPC_GNU_VTINHERIT", /* name */
1759 FALSE, /* partial_inplace */
1762 FALSE), /* pcrel_offset */
1764 /* GNU extension to record C++ vtable member usage. */
1765 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1767 0, /* size (0 = byte, 1 = short, 2 = long) */
1769 FALSE, /* pc_relative */
1771 complain_overflow_dont, /* complain_on_overflow */
1772 NULL, /* special_function */
1773 "R_PPC_GNU_VTENTRY", /* name */
1774 FALSE, /* partial_inplace */
1777 FALSE), /* pcrel_offset */
1779 /* Phony reloc to handle AIX style TOC entries. */
1780 HOWTO (R_PPC_TOC16, /* type */
1782 1, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE, /* pc_relative */
1786 complain_overflow_signed, /* complain_on_overflow */
1787 ppc_elf_unhandled_reloc, /* special_function */
1788 "R_PPC_TOC16", /* name */
1789 FALSE, /* partial_inplace */
1791 0xffff, /* dst_mask */
1792 FALSE), /* pcrel_offset */
1795 /* External 32-bit PPC structure for PRPSINFO. This structure is
1796 ABI-defined, thus we choose to use char arrays here in order to
1797 avoid dealing with different types in different architectures.
1799 The PPC 32-bit structure uses int for `pr_uid' and `pr_gid' while
1800 most non-PPC architectures use `short int'.
1802 This structure will ultimately be written in the corefile's note
1803 section, as the PRPSINFO. */
1805 struct elf_external_ppc_linux_prpsinfo32
1807 char pr_state; /* Numeric process state. */
1808 char pr_sname; /* Char for pr_state. */
1809 char pr_zomb; /* Zombie. */
1810 char pr_nice; /* Nice val. */
1811 char pr_flag[4]; /* Flags. */
1818 char pr_fname[16]; /* Filename of executable. */
1819 char pr_psargs[80]; /* Initial part of arg list. */
1822 /* Helper function to copy an elf_internal_linux_prpsinfo in host
1823 endian to an elf_external_ppc_linux_prpsinfo32 in target endian. */
1826 swap_ppc_linux_prpsinfo32_out (bfd *obfd,
1827 const struct elf_internal_linux_prpsinfo *from,
1828 struct elf_external_ppc_linux_prpsinfo32 *to)
1830 bfd_put_8 (obfd, from->pr_state, &to->pr_state);
1831 bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
1832 bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
1833 bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
1834 bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
1835 bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
1836 bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
1837 bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
1838 bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
1839 bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
1840 bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
1841 strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
1842 strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
1845 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1848 ppc_elf_howto_init (void)
1850 unsigned int i, type;
1853 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1856 type = ppc_elf_howto_raw[i].type;
1857 if (type >= (sizeof (ppc_elf_howto_table)
1858 / sizeof (ppc_elf_howto_table[0])))
1860 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1864 static reloc_howto_type *
1865 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1866 bfd_reloc_code_real_type code)
1868 enum elf_ppc_reloc_type r;
1870 /* Initialize howto table if not already done. */
1871 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1872 ppc_elf_howto_init ();
1879 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1880 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1881 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1882 case BFD_RELOC_PPC64_ADDR16_DS:
1883 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1884 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1885 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1886 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1887 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1888 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1889 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1890 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1891 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1892 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1893 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1894 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1895 case BFD_RELOC_PPC64_GOT16_DS:
1896 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1897 case BFD_RELOC_PPC64_GOT16_LO_DS:
1898 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1899 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1900 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1901 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1902 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1903 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1904 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1905 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1906 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1907 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1908 case BFD_RELOC_PPC64_PLT16_LO_DS:
1909 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1910 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1911 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1912 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1913 case BFD_RELOC_PPC64_SECTOFF_DS:
1914 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1915 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1916 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1917 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1918 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1919 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1920 case BFD_RELOC_PPC64_TOC16_DS:
1921 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1922 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1923 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1924 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1925 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1926 case BFD_RELOC_PPC64_TPREL16_DS:
1927 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1928 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1929 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1930 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1931 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1932 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1933 case BFD_RELOC_PPC64_DTPREL16_DS:
1934 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1935 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1936 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1937 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1938 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1939 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1940 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1941 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1942 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1943 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1944 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1945 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1946 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1947 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1948 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1949 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1950 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1951 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1952 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1953 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1954 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1955 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1956 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1957 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1958 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1959 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1960 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1961 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1962 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1963 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1964 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1965 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1966 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1967 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1968 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1969 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1970 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1971 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1972 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1973 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1974 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1975 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1976 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1977 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1978 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1979 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1980 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1981 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1982 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1983 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1984 r = R_PPC_VLE_SDAREL_LO16A;
1986 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1987 r = R_PPC_VLE_SDAREL_LO16D;
1989 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1990 r = R_PPC_VLE_SDAREL_HI16A;
1992 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1993 r = R_PPC_VLE_SDAREL_HI16D;
1995 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1996 r = R_PPC_VLE_SDAREL_HA16A;
1998 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1999 r = R_PPC_VLE_SDAREL_HA16D;
2001 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
2002 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
2003 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
2004 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
2005 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
2006 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
2007 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
2010 return ppc_elf_howto_table[r];
2013 static reloc_howto_type *
2014 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2020 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2022 if (ppc_elf_howto_raw[i].name != NULL
2023 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2024 return &ppc_elf_howto_raw[i];
2029 /* Set the howto pointer for a PowerPC ELF reloc. */
2032 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
2034 Elf_Internal_Rela *dst)
2036 unsigned int r_type;
2038 /* Initialize howto table if not already done. */
2039 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2040 ppc_elf_howto_init ();
2042 r_type = ELF32_R_TYPE (dst->r_info);
2043 if (r_type >= R_PPC_max)
2045 /* xgettext:c-format */
2046 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2048 bfd_set_error (bfd_error_bad_value);
2049 r_type = R_PPC_NONE;
2051 cache_ptr->howto = ppc_elf_howto_table[r_type];
2053 /* Just because the above assert didn't trigger doesn't mean that
2054 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2055 if (!cache_ptr->howto)
2057 /* xgettext:c-format */
2058 _bfd_error_handler (_("%B: invalid relocation type %d"),
2060 bfd_set_error (bfd_error_bad_value);
2062 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2066 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2068 static bfd_reloc_status_type
2069 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
2070 arelent *reloc_entry,
2072 void *data ATTRIBUTE_UNUSED,
2073 asection *input_section,
2075 char **error_message ATTRIBUTE_UNUSED)
2077 enum elf_ppc_reloc_type r_type;
2079 bfd_size_type octets;
2082 if (output_bfd != NULL)
2084 reloc_entry->address += input_section->output_offset;
2085 return bfd_reloc_ok;
2088 reloc_entry->addend += 0x8000;
2089 r_type = reloc_entry->howto->type;
2090 if (r_type != R_PPC_REL16DX_HA)
2091 return bfd_reloc_continue;
2094 if (!bfd_is_com_section (symbol->section))
2095 value = symbol->value;
2096 value += (reloc_entry->addend
2097 + symbol->section->output_offset
2098 + symbol->section->output_section->vma);
2099 value -= (reloc_entry->address
2100 + input_section->output_offset
2101 + input_section->output_section->vma);
2104 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2105 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2107 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2108 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2109 return bfd_reloc_ok;
2112 static bfd_reloc_status_type
2113 ppc_elf_unhandled_reloc (bfd *abfd,
2114 arelent *reloc_entry,
2117 asection *input_section,
2119 char **error_message)
2121 /* If this is a relocatable link (output_bfd test tells us), just
2122 call the generic function. Any adjustment will be done at final
2124 if (output_bfd != NULL)
2125 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2126 input_section, output_bfd, error_message);
2128 if (error_message != NULL)
2130 static char buf[60];
2131 sprintf (buf, _("generic linker can't handle %s"),
2132 reloc_entry->howto->name);
2133 *error_message = buf;
2135 return bfd_reloc_dangerous;
2138 /* Sections created by the linker. */
2140 typedef struct elf_linker_section
2142 /* Pointer to the bfd section. */
2146 /* Associated bss section name. */
2147 const char *bss_name;
2148 /* Associated symbol name. */
2149 const char *sym_name;
2150 /* Associated symbol. */
2151 struct elf_link_hash_entry *sym;
2152 } elf_linker_section_t;
2154 /* Linked list of allocated pointer entries. This hangs off of the
2155 symbol lists, and provides allows us to return different pointers,
2156 based on different addend's. */
2158 typedef struct elf_linker_section_pointers
2160 /* next allocated pointer for this symbol */
2161 struct elf_linker_section_pointers *next;
2162 /* offset of pointer from beginning of section */
2166 /* which linker section this is */
2167 elf_linker_section_t *lsect;
2168 } elf_linker_section_pointers_t;
2170 struct ppc_elf_obj_tdata
2172 struct elf_obj_tdata elf;
2174 /* A mapping from local symbols to offsets into the various linker
2175 sections added. This is index by the symbol index. */
2176 elf_linker_section_pointers_t **linker_section_pointers;
2178 /* Flags used to auto-detect plt type. */
2179 unsigned int makes_plt_call : 1;
2180 unsigned int has_rel16 : 1;
2183 #define ppc_elf_tdata(bfd) \
2184 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2186 #define elf_local_ptr_offsets(bfd) \
2187 (ppc_elf_tdata (bfd)->linker_section_pointers)
2189 #define is_ppc_elf(bfd) \
2190 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2191 && elf_object_id (bfd) == PPC32_ELF_DATA)
2193 /* Override the generic function because we store some extras. */
2196 ppc_elf_mkobject (bfd *abfd)
2198 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2202 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2205 _bfd_elf_ppc_set_arch (bfd *abfd)
2207 unsigned long mach = 0;
2209 unsigned char *contents;
2211 if (abfd->arch_info->bits_per_word == 32
2212 && bfd_big_endian (abfd))
2215 for (s = abfd->sections; s != NULL; s = s->next)
2216 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2219 mach = bfd_mach_ppc_vle;
2224 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2225 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2227 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2230 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2232 unsigned int val = bfd_get_32 (abfd, contents + i);
2235 case PPC_APUINFO_PMR:
2236 case PPC_APUINFO_RFMCI:
2238 mach = bfd_mach_ppc_titan;
2241 case PPC_APUINFO_ISEL:
2242 case PPC_APUINFO_CACHELCK:
2243 if (mach == bfd_mach_ppc_titan)
2244 mach = bfd_mach_ppc_e500mc;
2247 case PPC_APUINFO_SPE:
2248 case PPC_APUINFO_EFS:
2249 case PPC_APUINFO_BRLOCK:
2250 if (mach != bfd_mach_ppc_vle)
2251 mach = bfd_mach_ppc_e500;
2254 case PPC_APUINFO_VLE:
2255 mach = bfd_mach_ppc_vle;
2266 if (mach != 0 && mach != -1ul)
2268 const bfd_arch_info_type *arch;
2270 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2271 if (arch->mach == mach)
2273 abfd->arch_info = arch;
2280 /* Fix bad default arch selected for a 32 bit input bfd when the
2281 default is 64 bit. Also select arch based on apuinfo. */
2284 ppc_elf_object_p (bfd *abfd)
2286 if (!abfd->arch_info->the_default)
2289 if (abfd->arch_info->bits_per_word == 64)
2291 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2293 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2295 /* Relies on arch after 64 bit default being 32 bit default. */
2296 abfd->arch_info = abfd->arch_info->next;
2297 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2300 return _bfd_elf_ppc_set_arch (abfd);
2303 /* Function to set whether a module needs the -mrelocatable bit set. */
2306 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2308 BFD_ASSERT (!elf_flags_init (abfd)
2309 || elf_elfheader (abfd)->e_flags == flags);
2311 elf_elfheader (abfd)->e_flags = flags;
2312 elf_flags_init (abfd) = TRUE;
2316 /* Support for core dump NOTE sections. */
2319 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2324 switch (note->descsz)
2329 case 268: /* Linux/PPC. */
2331 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2334 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2343 /* Make a ".reg/999" section. */
2344 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2345 size, note->descpos + offset);
2349 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2351 switch (note->descsz)
2356 case 128: /* Linux/PPC elf_prpsinfo. */
2357 elf_tdata (abfd)->core->pid
2358 = bfd_get_32 (abfd, note->descdata + 16);
2359 elf_tdata (abfd)->core->program
2360 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2361 elf_tdata (abfd)->core->command
2362 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2365 /* Note that for some reason, a spurious space is tacked
2366 onto the end of the args in some (at least one anyway)
2367 implementations, so strip it off if it exists. */
2370 char *command = elf_tdata (abfd)->core->command;
2371 int n = strlen (command);
2373 if (0 < n && command[n - 1] == ' ')
2374 command[n - 1] = '\0';
2381 elfcore_write_ppc_linux_prpsinfo32
2385 const struct elf_internal_linux_prpsinfo *prpsinfo)
2387 struct elf_external_ppc_linux_prpsinfo32 data;
2389 swap_ppc_linux_prpsinfo32_out (abfd, prpsinfo, &data);
2390 return elfcore_write_note (abfd, buf, bufsiz,
2391 "CORE", NT_PRPSINFO, &data, sizeof (data));
2395 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2407 va_start (ap, note_type);
2408 memset (data, 0, sizeof (data));
2409 strncpy (data + 32, va_arg (ap, const char *), 16);
2410 strncpy (data + 48, va_arg (ap, const char *), 80);
2412 return elfcore_write_note (abfd, buf, bufsiz,
2413 "CORE", note_type, data, sizeof (data));
2424 va_start (ap, note_type);
2425 memset (data, 0, 72);
2426 pid = va_arg (ap, long);
2427 bfd_put_32 (abfd, pid, data + 24);
2428 cursig = va_arg (ap, int);
2429 bfd_put_16 (abfd, cursig, data + 12);
2430 greg = va_arg (ap, const void *);
2431 memcpy (data + 72, greg, 192);
2432 memset (data + 264, 0, 4);
2434 return elfcore_write_note (abfd, buf, bufsiz,
2435 "CORE", note_type, data, sizeof (data));
2441 ppc_elf_lookup_section_flags (char *flag_name)
2444 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2450 /* Return address for Ith PLT stub in section PLT, for relocation REL
2451 or (bfd_vma) -1 if it should not be included. */
2454 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2455 const asection *plt ATTRIBUTE_UNUSED,
2458 return rel->address;
2461 /* Handle a PowerPC specific section when reading an object file. This
2462 is called when bfd_section_from_shdr finds a section with an unknown
2466 ppc_elf_section_from_shdr (bfd *abfd,
2467 Elf_Internal_Shdr *hdr,
2474 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2477 newsect = hdr->bfd_section;
2478 flags = bfd_get_section_flags (abfd, newsect);
2479 if (hdr->sh_flags & SHF_EXCLUDE)
2480 flags |= SEC_EXCLUDE;
2482 if (hdr->sh_type == SHT_ORDERED)
2483 flags |= SEC_SORT_ENTRIES;
2485 bfd_set_section_flags (abfd, newsect, flags);
2489 /* Set up any other section flags and such that may be necessary. */
2492 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2493 Elf_Internal_Shdr *shdr,
2496 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2497 shdr->sh_type = SHT_ORDERED;
2502 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2503 need to bump up the number of section headers. */
2506 ppc_elf_additional_program_headers (bfd *abfd,
2507 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2512 s = bfd_get_section_by_name (abfd, ".sbss2");
2513 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2516 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2517 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2523 /* Modify the segment map for VLE executables. */
2526 ppc_elf_modify_segment_map (bfd *abfd,
2527 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2529 struct elf_segment_map *m;
2531 /* At this point in the link, output sections have already been sorted by
2532 LMA and assigned to segments. All that is left to do is to ensure
2533 there is no mixing of VLE & non-VLE sections in a text segment.
2534 If we find that case, we split the segment.
2535 We maintain the original output section order. */
2537 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2539 struct elf_segment_map *n;
2542 unsigned int p_flags;
2544 if (m->p_type != PT_LOAD || m->count == 0)
2547 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2549 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2551 if ((m->sections[j]->flags & SEC_CODE) != 0)
2554 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2555 p_flags |= PF_PPC_VLE;
2560 while (++j != m->count)
2562 unsigned int p_flags1 = PF_R;
2564 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2566 if ((m->sections[j]->flags & SEC_CODE) != 0)
2569 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2570 p_flags1 |= PF_PPC_VLE;
2571 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2574 p_flags |= p_flags1;
2576 /* If we're splitting a segment which originally contained rw
2577 sections then those sections might now only be in one of the
2578 two parts. So always set p_flags if splitting, even if we
2579 are being called for objcopy with p_flags_valid set. */
2580 if (j != m->count || !m->p_flags_valid)
2582 m->p_flags_valid = 1;
2583 m->p_flags = p_flags;
2588 /* Sections 0..j-1 stay in this (current) segment,
2589 the remainder are put in a new segment.
2590 The scan resumes with the new segment. */
2592 amt = sizeof (struct elf_segment_map);
2593 amt += (m->count - j - 1) * sizeof (asection *);
2594 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2598 n->p_type = PT_LOAD;
2599 n->count = m->count - j;
2600 for (k = 0; k < n->count; ++k)
2601 n->sections[k] = m->sections[j + k];
2603 m->p_size_valid = 0;
2611 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2612 .PPC.EMB.sbss0 a normal section, and not a bss section so
2613 that the linker doesn't crater when trying to make more than
2616 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2618 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2619 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2620 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2621 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2622 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2623 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2624 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2625 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2626 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2627 { NULL, 0, 0, 0, 0 }
2630 /* This is what we want for new plt/got. */
2631 static struct bfd_elf_special_section ppc_alt_plt =
2632 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2634 static const struct bfd_elf_special_section *
2635 ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2637 const struct bfd_elf_special_section *ssect;
2639 /* See if this is one of the special sections. */
2640 if (sec->name == NULL)
2643 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2647 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2648 ssect = &ppc_alt_plt;
2652 return _bfd_elf_get_sec_type_attr (abfd, sec);
2655 /* Very simple linked list structure for recording apuinfo values. */
2656 typedef struct apuinfo_list
2658 struct apuinfo_list *next;
2659 unsigned long value;
2663 static apuinfo_list *head;
2664 static bfd_boolean apuinfo_set;
2667 apuinfo_list_init (void)
2670 apuinfo_set = FALSE;
2674 apuinfo_list_add (unsigned long value)
2676 apuinfo_list *entry = head;
2678 while (entry != NULL)
2680 if (entry->value == value)
2682 entry = entry->next;
2685 entry = bfd_malloc (sizeof (* entry));
2689 entry->value = value;
2695 apuinfo_list_length (void)
2697 apuinfo_list *entry;
2698 unsigned long count;
2700 for (entry = head, count = 0;
2702 entry = entry->next)
2708 static inline unsigned long
2709 apuinfo_list_element (unsigned long number)
2711 apuinfo_list * entry;
2715 entry = entry->next)
2718 return entry ? entry->value : 0;
2722 apuinfo_list_finish (void)
2724 apuinfo_list *entry;
2726 for (entry = head; entry;)
2728 apuinfo_list *next = entry->next;
2736 /* Scan the input BFDs and create a linked list of
2737 the APUinfo values that will need to be emitted. */
2740 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2744 char *buffer = NULL;
2745 bfd_size_type largest_input_size = 0;
2747 unsigned long length;
2748 const char *error_message = NULL;
2750 if (link_info == NULL)
2753 apuinfo_list_init ();
2755 /* Read in the input sections contents. */
2756 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2758 unsigned long datum;
2760 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2764 /* xgettext:c-format */
2765 error_message = _("corrupt %s section in %B");
2766 length = asec->size;
2771 if (largest_input_size < asec->size)
2775 largest_input_size = asec->size;
2776 buffer = bfd_malloc (largest_input_size);
2781 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2782 || (bfd_bread (buffer, length, ibfd) != length))
2784 /* xgettext:c-format */
2785 error_message = _("unable to read in %s section from %B");
2789 /* Verify the contents of the header. Note - we have to
2790 extract the values this way in order to allow for a
2791 host whose endian-ness is different from the target. */
2792 datum = bfd_get_32 (ibfd, buffer);
2793 if (datum != sizeof APUINFO_LABEL)
2796 datum = bfd_get_32 (ibfd, buffer + 8);
2800 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2803 /* Get the number of bytes used for apuinfo entries. */
2804 datum = bfd_get_32 (ibfd, buffer + 4);
2805 if (datum + 20 != length)
2808 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2809 for (i = 0; i < datum; i += 4)
2810 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2813 error_message = NULL;
2817 /* Compute the size of the output section. */
2818 unsigned num_entries = apuinfo_list_length ();
2820 /* Set the output section size, if it exists. */
2821 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2823 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2826 /* xgettext:c-format */
2827 error_message = _("warning: unable to set size of %s section in %B");
2836 _bfd_error_handler (error_message, ibfd, APUINFO_SECTION_NAME);
2839 /* Prevent the output section from accumulating the input sections'
2840 contents. We have already stored this in our linked list structure. */
2843 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2844 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2846 bfd_byte *contents ATTRIBUTE_UNUSED)
2848 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2851 /* Finally we can generate the output section. */
2854 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2859 unsigned num_entries;
2860 bfd_size_type length;
2862 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2869 length = asec->size;
2873 buffer = bfd_malloc (length);
2877 (_("failed to allocate space for new APUinfo section."));
2881 /* Create the apuinfo header. */
2882 num_entries = apuinfo_list_length ();
2883 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2884 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2885 bfd_put_32 (abfd, 0x2, buffer + 8);
2886 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2889 for (i = 0; i < num_entries; i++)
2891 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2895 if (length != asec->size)
2896 _bfd_error_handler (_("failed to compute new APUinfo section."));
2898 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2899 _bfd_error_handler (_("failed to install new APUinfo section."));
2903 apuinfo_list_finish ();
2907 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2909 bfd_byte buf[GLINK_ENTRY_SIZE];
2911 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2914 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2915 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2916 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2917 && bfd_get_32 (abfd, buf + 12) == BCTR);
2921 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2923 bfd_vma vma = *(bfd_vma *) ptr;
2924 return ((section->flags & SEC_ALLOC) != 0
2925 && section->vma <= vma
2926 && vma < section->vma + section->size);
2930 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2931 long dynsymcount, asymbol **dynsyms,
2934 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2935 asection *plt, *relplt, *dynamic, *glink;
2936 bfd_vma glink_vma = 0;
2937 bfd_vma resolv_vma = 0;
2948 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2951 if (dynsymcount <= 0)
2954 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2958 plt = bfd_get_section_by_name (abfd, ".plt");
2962 /* Call common code to handle old-style executable PLTs. */
2963 if (elf_section_flags (plt) & SHF_EXECINSTR)
2964 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2965 dynsymcount, dynsyms, ret);
2967 /* If this object was prelinked, the prelinker stored the address
2968 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2969 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2970 if (dynamic != NULL)
2972 bfd_byte *dynbuf, *extdyn, *extdynend;
2974 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2976 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2979 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2980 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2983 extdynend = extdyn + dynamic->size;
2984 for (; extdyn < extdynend; extdyn += extdynsize)
2986 Elf_Internal_Dyn dyn;
2987 (*swap_dyn_in) (abfd, extdyn, &dyn);
2989 if (dyn.d_tag == DT_NULL)
2992 if (dyn.d_tag == DT_PPC_GOT)
2994 unsigned int g_o_t = dyn.d_un.d_val;
2995 asection *got = bfd_get_section_by_name (abfd, ".got");
2997 && bfd_get_section_contents (abfd, got, buf,
2998 g_o_t - got->vma + 4, 4))
2999 glink_vma = bfd_get_32 (abfd, buf);
3006 /* Otherwise we read the first plt entry. */
3009 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
3010 glink_vma = bfd_get_32 (abfd, buf);
3016 /* The .glink section usually does not survive the final
3017 link; search for the section (usually .text) where the
3018 glink stubs now reside. */
3019 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
3023 /* Determine glink PLT resolver by reading the relative branch
3024 from the first glink stub. */
3025 if (bfd_get_section_contents (abfd, glink, buf,
3026 glink_vma - glink->vma, 4))
3028 unsigned int insn = bfd_get_32 (abfd, buf);
3030 /* The first glink stub may either branch to the resolver ... */
3032 if ((insn & ~0x3fffffc) == 0)
3033 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3035 /* ... or fall through a bunch of NOPs. */
3036 else if ((insn ^ B ^ NOP) == 0)
3038 bfd_get_section_contents (abfd, glink, buf,
3039 glink_vma - glink->vma + i, 4);
3041 if (bfd_get_32 (abfd, buf) != NOP)
3043 resolv_vma = glink_vma + i;
3048 count = relplt->size / sizeof (Elf32_External_Rela);
3049 /* If the stubs are those for -shared/-pie then we might have
3050 multiple stubs for each plt entry. If that is the case then
3051 there is no way to associate stubs with their plt entries short
3052 of figuring out the GOT pointer value used in the stub. */
3053 if (!is_nonpic_glink_stub (abfd, glink,
3054 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3057 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3058 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3061 size = count * sizeof (asymbol);
3062 p = relplt->relocation;
3063 for (i = 0; i < count; i++, p++)
3065 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3067 size += sizeof ("+0x") - 1 + 8;
3070 size += sizeof (asymbol) + sizeof ("__glink");
3073 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3075 s = *ret = bfd_malloc (size);
3079 stub_vma = glink_vma;
3080 names = (char *) (s + count + 1 + (resolv_vma != 0));
3081 p = relplt->relocation + count - 1;
3082 for (i = 0; i < count; i++)
3086 *s = **p->sym_ptr_ptr;
3087 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3088 we are defining a symbol, ensure one of them is set. */
3089 if ((s->flags & BSF_LOCAL) == 0)
3090 s->flags |= BSF_GLOBAL;
3091 s->flags |= BSF_SYNTHETIC;
3094 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3096 s->value = stub_vma - glink->vma;
3099 len = strlen ((*p->sym_ptr_ptr)->name);
3100 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3104 memcpy (names, "+0x", sizeof ("+0x") - 1);
3105 names += sizeof ("+0x") - 1;
3106 bfd_sprintf_vma (abfd, names, p->addend);
3107 names += strlen (names);
3109 memcpy (names, "@plt", sizeof ("@plt"));
3110 names += sizeof ("@plt");
3115 /* Add a symbol at the start of the glink branch table. */
3116 memset (s, 0, sizeof *s);
3118 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3120 s->value = glink_vma - glink->vma;
3122 memcpy (names, "__glink", sizeof ("__glink"));
3123 names += sizeof ("__glink");
3129 /* Add a symbol for the glink PLT resolver. */
3130 memset (s, 0, sizeof *s);
3132 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3134 s->value = resolv_vma - glink->vma;
3136 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3137 names += sizeof ("__glink_PLTresolve");
3145 /* The following functions are specific to the ELF linker, while
3146 functions above are used generally. They appear in this file more
3147 or less in the order in which they are called. eg.
3148 ppc_elf_check_relocs is called early in the link process,
3149 ppc_elf_finish_dynamic_sections is one of the last functions
3152 /* Track PLT entries needed for a given symbol. We might need more
3153 than one glink entry per symbol when generating a pic binary. */
3156 struct plt_entry *next;
3158 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3159 This field stores the offset into .got2 used to initialise the
3160 GOT pointer reg. It will always be at least 32768. (Current
3161 gcc always uses an offset of 32768, but ld -r will pack .got2
3162 sections together resulting in larger offsets). */
3165 /* The .got2 section. */
3168 /* PLT refcount or offset. */
3171 bfd_signed_vma refcount;
3175 /* .glink stub offset. */
3176 bfd_vma glink_offset;
3179 /* Of those relocs that might be copied as dynamic relocs, this function
3180 selects those that must be copied when linking a shared library,
3181 even when the symbol is local. */
3184 must_be_dyn_reloc (struct bfd_link_info *info,
3185 enum elf_ppc_reloc_type r_type)
3194 case R_PPC_REL14_BRTAKEN:
3195 case R_PPC_REL14_BRNTAKEN:
3201 case R_PPC_TPREL16_LO:
3202 case R_PPC_TPREL16_HI:
3203 case R_PPC_TPREL16_HA:
3204 return !bfd_link_executable (info);
3208 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3209 copying dynamic variables from a shared lib into an app's dynbss
3210 section, and instead use a dynamic relocation to point into the
3212 #define ELIMINATE_COPY_RELOCS 1
3214 /* Used to track dynamic relocations for local symbols. */
3215 struct ppc_dyn_relocs
3217 struct ppc_dyn_relocs *next;
3219 /* The input section of the reloc. */
3222 /* Total number of relocs copied for the input section. */
3223 unsigned int count : 31;
3225 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3226 unsigned int ifunc : 1;
3229 /* PPC ELF linker hash entry. */
3231 struct ppc_elf_link_hash_entry
3233 struct elf_link_hash_entry elf;
3235 /* If this symbol is used in the linker created sections, the processor
3236 specific backend uses this field to map the field into the offset
3237 from the beginning of the section. */
3238 elf_linker_section_pointers_t *linker_section_pointer;
3240 /* Track dynamic relocs copied for this symbol. */
3241 struct elf_dyn_relocs *dyn_relocs;
3243 /* Contexts in which symbol is used in the GOT (or TOC).
3244 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3245 corresponding relocs are encountered during check_relocs.
3246 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3247 indicate the corresponding GOT entry type is not needed. */
3248 #define TLS_GD 1 /* GD reloc. */
3249 #define TLS_LD 2 /* LD reloc. */
3250 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3251 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3252 #define TLS_TLS 16 /* Any TLS reloc. */
3253 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3254 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3257 /* Nonzero if we have seen a small data relocation referring to this
3259 unsigned char has_sda_refs : 1;
3261 /* Flag use of given relocations. */
3262 unsigned char has_addr16_ha : 1;
3263 unsigned char has_addr16_lo : 1;
3266 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3268 /* PPC ELF linker hash table. */
3270 struct ppc_elf_link_hash_table
3272 struct elf_link_hash_table elf;
3274 /* Various options passed from the linker. */
3275 struct ppc_elf_params *params;
3277 /* Short-cuts to get to dynamic linker sections. */
3281 elf_linker_section_t sdata[2];
3283 asection *glink_eh_frame;
3285 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3288 /* Shortcut to __tls_get_addr. */
3289 struct elf_link_hash_entry *tls_get_addr;
3291 /* The bfd that forced an old-style PLT. */
3294 /* TLS local dynamic got entry handling. */
3296 bfd_signed_vma refcount;
3300 /* Offset of branch table to PltResolve function in glink. */
3301 bfd_vma glink_pltresolve;
3303 /* Size of reserved GOT entries. */
3304 unsigned int got_header_size;
3305 /* Non-zero if allocating the header left a gap. */
3306 unsigned int got_gap;
3308 /* The type of PLT we have chosen to use. */
3309 enum ppc_elf_plt_type plt_type;
3311 /* True if the target system is VxWorks. */
3312 unsigned int is_vxworks:1;
3314 /* The size of PLT entries. */
3316 /* The distance between adjacent PLT slots. */
3318 /* The size of the first PLT entry. */
3319 int plt_initial_entry_size;
3321 /* Small local sym cache. */
3322 struct sym_cache sym_cache;
3325 /* Rename some of the generic section flags to better document how they
3326 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3328 /* Nonzero if this section has TLS related relocations. */
3329 #define has_tls_reloc sec_flg0
3331 /* Nonzero if this section has a call to __tls_get_addr. */
3332 #define has_tls_get_addr_call sec_flg1
3334 /* Get the PPC ELF linker hash table from a link_info structure. */
3336 #define ppc_elf_hash_table(p) \
3337 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3338 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3340 /* Create an entry in a PPC ELF linker hash table. */
3342 static struct bfd_hash_entry *
3343 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3344 struct bfd_hash_table *table,
3347 /* Allocate the structure if it has not already been allocated by a
3351 entry = bfd_hash_allocate (table,
3352 sizeof (struct ppc_elf_link_hash_entry));
3357 /* Call the allocation method of the superclass. */
3358 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3361 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3362 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3363 ppc_elf_hash_entry (entry)->tls_mask = 0;
3364 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3370 /* Create a PPC ELF linker hash table. */
3372 static struct bfd_link_hash_table *
3373 ppc_elf_link_hash_table_create (bfd *abfd)
3375 struct ppc_elf_link_hash_table *ret;
3376 static struct ppc_elf_params default_params
3377 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3379 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3383 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3384 ppc_elf_link_hash_newfunc,
3385 sizeof (struct ppc_elf_link_hash_entry),
3392 ret->elf.init_plt_refcount.refcount = 0;
3393 ret->elf.init_plt_refcount.glist = NULL;
3394 ret->elf.init_plt_offset.offset = 0;
3395 ret->elf.init_plt_offset.glist = NULL;
3397 ret->params = &default_params;
3399 ret->sdata[0].name = ".sdata";
3400 ret->sdata[0].sym_name = "_SDA_BASE_";
3401 ret->sdata[0].bss_name = ".sbss";
3403 ret->sdata[1].name = ".sdata2";
3404 ret->sdata[1].sym_name = "_SDA2_BASE_";
3405 ret->sdata[1].bss_name = ".sbss2";
3407 ret->plt_entry_size = 12;
3408 ret->plt_slot_size = 8;
3409 ret->plt_initial_entry_size = 72;
3411 return &ret->elf.root;
3414 /* Hook linker params into hash table. */
3417 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3419 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3422 htab->params = params;
3423 params->pagesize_p2 = bfd_log2 (params->pagesize);
3426 /* Create .got and the related sections. */
3429 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3431 struct ppc_elf_link_hash_table *htab;
3433 if (!_bfd_elf_create_got_section (abfd, info))
3436 htab = ppc_elf_hash_table (info);
3437 if (!htab->is_vxworks)
3439 /* The powerpc .got has a blrl instruction in it. Mark it
3441 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3442 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3443 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3450 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3451 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3452 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3455 ppc_elf_create_linker_section (bfd *abfd,
3456 struct bfd_link_info *info,
3458 elf_linker_section_t *lsect)
3462 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3463 | SEC_LINKER_CREATED);
3465 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3470 /* Define the sym on the first section of this name. */
3471 s = bfd_get_section_by_name (abfd, lsect->name);
3473 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3474 if (lsect->sym == NULL)
3476 lsect->sym->root.u.def.value = 0x8000;
3481 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3483 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3487 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3488 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3489 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3492 || !bfd_set_section_alignment (abfd, s,
3493 htab->params->ppc476_workaround ? 6 : 4))
3496 if (!info->no_ld_generated_unwind_info)
3498 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3499 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3500 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3501 htab->glink_eh_frame = s;
3503 || !bfd_set_section_alignment (abfd, s, 2))
3507 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3508 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3511 || !bfd_set_section_alignment (abfd, s, 4))
3514 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3515 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3516 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3517 htab->elf.irelplt = s;
3519 || ! bfd_set_section_alignment (abfd, s, 2))
3522 if (!ppc_elf_create_linker_section (abfd, info, 0,
3526 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3533 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3534 to output sections (just like _bfd_elf_create_dynamic_sections has
3535 to create .dynbss and .rela.bss). */
3538 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3540 struct ppc_elf_link_hash_table *htab;
3544 htab = ppc_elf_hash_table (info);
3546 if (htab->elf.sgot == NULL
3547 && !ppc_elf_create_got (abfd, info))
3550 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3553 if (htab->glink == NULL
3554 && !ppc_elf_create_glink (abfd, info))
3557 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3558 SEC_ALLOC | SEC_LINKER_CREATED);
3563 if (! bfd_link_pic (info))
3565 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3566 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3567 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3570 || ! bfd_set_section_alignment (abfd, s, 2))
3574 if (htab->is_vxworks
3575 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3579 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3580 if (htab->plt_type == PLT_VXWORKS)
3581 /* The VxWorks PLT is a loaded section with contents. */
3582 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3583 return bfd_set_section_flags (abfd, s, flags);
3586 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3589 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3590 struct elf_link_hash_entry *dir,
3591 struct elf_link_hash_entry *ind)
3593 struct ppc_elf_link_hash_entry *edir, *eind;
3595 edir = (struct ppc_elf_link_hash_entry *) dir;
3596 eind = (struct ppc_elf_link_hash_entry *) ind;
3598 edir->tls_mask |= eind->tls_mask;
3599 edir->has_sda_refs |= eind->has_sda_refs;
3601 /* If called to transfer flags for a weakdef during processing
3602 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3603 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3604 if (!(ELIMINATE_COPY_RELOCS
3605 && eind->elf.root.type != bfd_link_hash_indirect
3606 && edir->elf.dynamic_adjusted))
3607 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3609 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3610 edir->elf.ref_regular |= eind->elf.ref_regular;
3611 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3612 edir->elf.needs_plt |= eind->elf.needs_plt;
3613 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3615 if (eind->dyn_relocs != NULL)
3617 if (edir->dyn_relocs != NULL)
3619 struct elf_dyn_relocs **pp;
3620 struct elf_dyn_relocs *p;
3622 /* Add reloc counts against the indirect sym to the direct sym
3623 list. Merge any entries against the same section. */
3624 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3626 struct elf_dyn_relocs *q;
3628 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3629 if (q->sec == p->sec)
3631 q->pc_count += p->pc_count;
3632 q->count += p->count;
3639 *pp = edir->dyn_relocs;
3642 edir->dyn_relocs = eind->dyn_relocs;
3643 eind->dyn_relocs = NULL;
3646 /* If we were called to copy over info for a weak sym, that's all.
3647 You might think dyn_relocs need not be copied over; After all,
3648 both syms will be dynamic or both non-dynamic so we're just
3649 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
3650 code in ppc_elf_adjust_dynamic_symbol needs to check for
3651 dyn_relocs in read-only sections, and it does so on what is the
3653 if (eind->elf.root.type != bfd_link_hash_indirect)
3656 /* Copy over the GOT refcount entries that we may have already seen to
3657 the symbol which just became indirect. */
3658 edir->elf.got.refcount += eind->elf.got.refcount;
3659 eind->elf.got.refcount = 0;
3661 /* And plt entries. */
3662 if (eind->elf.plt.plist != NULL)
3664 if (edir->elf.plt.plist != NULL)
3666 struct plt_entry **entp;
3667 struct plt_entry *ent;
3669 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3671 struct plt_entry *dent;
3673 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3674 if (dent->sec == ent->sec && dent->addend == ent->addend)
3676 dent->plt.refcount += ent->plt.refcount;
3683 *entp = edir->elf.plt.plist;
3686 edir->elf.plt.plist = eind->elf.plt.plist;
3687 eind->elf.plt.plist = NULL;
3690 if (eind->elf.dynindx != -1)
3692 if (edir->elf.dynindx != -1)
3693 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3694 edir->elf.dynstr_index);
3695 edir->elf.dynindx = eind->elf.dynindx;
3696 edir->elf.dynstr_index = eind->elf.dynstr_index;
3697 eind->elf.dynindx = -1;
3698 eind->elf.dynstr_index = 0;
3702 /* Hook called by the linker routine which adds symbols from an object
3703 file. We use it to put .comm items in .sbss, and not .bss. */
3706 ppc_elf_add_symbol_hook (bfd *abfd,
3707 struct bfd_link_info *info,
3708 Elf_Internal_Sym *sym,
3709 const char **namep ATTRIBUTE_UNUSED,
3710 flagword *flagsp ATTRIBUTE_UNUSED,
3714 if (sym->st_shndx == SHN_COMMON
3715 && !bfd_link_relocatable (info)
3716 && is_ppc_elf (info->output_bfd)
3717 && sym->st_size <= elf_gp_size (abfd))
3719 /* Common symbols less than or equal to -G nn bytes are automatically
3721 struct ppc_elf_link_hash_table *htab;
3723 htab = ppc_elf_hash_table (info);
3724 if (htab->sbss == NULL)
3726 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3728 if (!htab->elf.dynobj)
3729 htab->elf.dynobj = abfd;
3731 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3734 if (htab->sbss == NULL)
3739 *valp = sym->st_size;
3742 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3743 && (abfd->flags & DYNAMIC) == 0
3744 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3745 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3750 /* Find a linker generated pointer with a given addend and type. */
3752 static elf_linker_section_pointers_t *
3753 elf_find_pointer_linker_section
3754 (elf_linker_section_pointers_t *linker_pointers,
3756 elf_linker_section_t *lsect)
3758 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3759 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3760 return linker_pointers;
3765 /* Allocate a pointer to live in a linker created section. */
3768 elf_allocate_pointer_linker_section (bfd *abfd,
3769 elf_linker_section_t *lsect,
3770 struct elf_link_hash_entry *h,
3771 const Elf_Internal_Rela *rel)
3773 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3774 elf_linker_section_pointers_t *linker_section_ptr;
3775 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3778 BFD_ASSERT (lsect != NULL);
3780 /* Is this a global symbol? */
3783 struct ppc_elf_link_hash_entry *eh;
3785 /* Has this symbol already been allocated? If so, our work is done. */
3786 eh = (struct ppc_elf_link_hash_entry *) h;
3787 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3792 ptr_linker_section_ptr = &eh->linker_section_pointer;
3796 BFD_ASSERT (is_ppc_elf (abfd));
3798 /* Allocation of a pointer to a local symbol. */
3799 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3801 /* Allocate a table to hold the local symbols if first time. */
3804 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3807 amt *= sizeof (elf_linker_section_pointers_t *);
3808 ptr = bfd_zalloc (abfd, amt);
3813 elf_local_ptr_offsets (abfd) = ptr;
3816 /* Has this symbol already been allocated? If so, our work is done. */
3817 if (elf_find_pointer_linker_section (ptr[r_symndx],
3822 ptr_linker_section_ptr = &ptr[r_symndx];
3825 /* Allocate space for a pointer in the linker section, and allocate
3826 a new pointer record from internal memory. */
3827 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3828 amt = sizeof (elf_linker_section_pointers_t);
3829 linker_section_ptr = bfd_alloc (abfd, amt);
3831 if (!linker_section_ptr)
3834 linker_section_ptr->next = *ptr_linker_section_ptr;
3835 linker_section_ptr->addend = rel->r_addend;
3836 linker_section_ptr->lsect = lsect;
3837 *ptr_linker_section_ptr = linker_section_ptr;
3839 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3841 linker_section_ptr->offset = lsect->section->size;
3842 lsect->section->size += 4;
3846 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3847 lsect->name, (long) linker_section_ptr->offset,
3848 (long) lsect->section->size);
3854 static struct plt_entry **
3855 update_local_sym_info (bfd *abfd,
3856 Elf_Internal_Shdr *symtab_hdr,
3857 unsigned long r_symndx,
3860 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3861 struct plt_entry **local_plt;
3862 char *local_got_tls_masks;
3864 if (local_got_refcounts == NULL)
3866 bfd_size_type size = symtab_hdr->sh_info;
3868 size *= (sizeof (*local_got_refcounts)
3869 + sizeof (*local_plt)
3870 + sizeof (*local_got_tls_masks));
3871 local_got_refcounts = bfd_zalloc (abfd, size);
3872 if (local_got_refcounts == NULL)
3874 elf_local_got_refcounts (abfd) = local_got_refcounts;
3877 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3878 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3879 local_got_tls_masks[r_symndx] |= tls_type;
3880 if (tls_type != PLT_IFUNC)
3881 local_got_refcounts[r_symndx] += 1;
3882 return local_plt + r_symndx;
3886 update_plt_info (bfd *abfd, struct plt_entry **plist,
3887 asection *sec, bfd_vma addend)
3889 struct plt_entry *ent;
3893 for (ent = *plist; ent != NULL; ent = ent->next)
3894 if (ent->sec == sec && ent->addend == addend)
3898 bfd_size_type amt = sizeof (*ent);
3899 ent = bfd_alloc (abfd, amt);
3904 ent->addend = addend;
3905 ent->plt.refcount = 0;
3908 ent->plt.refcount += 1;
3912 static struct plt_entry *
3913 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3915 struct plt_entry *ent;
3919 for (ent = *plist; ent != NULL; ent = ent->next)
3920 if (ent->sec == sec && ent->addend == addend)
3926 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3928 return (r_type == R_PPC_PLTREL24
3929 || r_type == R_PPC_LOCAL24PC
3930 || r_type == R_PPC_REL24
3931 || r_type == R_PPC_REL14
3932 || r_type == R_PPC_REL14_BRTAKEN
3933 || r_type == R_PPC_REL14_BRNTAKEN
3934 || r_type == R_PPC_ADDR24
3935 || r_type == R_PPC_ADDR14
3936 || r_type == R_PPC_ADDR14_BRTAKEN
3937 || r_type == R_PPC_ADDR14_BRNTAKEN
3938 || r_type == R_PPC_VLE_REL24);
3942 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3945 /* xgettext:c-format */
3946 (_("%B: relocation %s cannot be used when making a shared object"),
3948 ppc_elf_howto_table[r_type]->name);
3949 bfd_set_error (bfd_error_bad_value);
3952 /* Look through the relocs for a section during the first phase, and
3953 allocate space in the global offset table or procedure linkage
3957 ppc_elf_check_relocs (bfd *abfd,
3958 struct bfd_link_info *info,
3960 const Elf_Internal_Rela *relocs)
3962 struct ppc_elf_link_hash_table *htab;
3963 Elf_Internal_Shdr *symtab_hdr;
3964 struct elf_link_hash_entry **sym_hashes;
3965 const Elf_Internal_Rela *rel;
3966 const Elf_Internal_Rela *rel_end;
3967 asection *got2, *sreloc;
3968 struct elf_link_hash_entry *tga;
3970 if (bfd_link_relocatable (info))
3973 /* Don't do anything special with non-loaded, non-alloced sections.
3974 In particular, any relocs in such sections should not affect GOT
3975 and PLT reference counting (ie. we don't allow them to create GOT
3976 or PLT entries), there's no possibility or desire to optimize TLS
3977 relocs, and there's not much point in propagating relocs to shared
3978 libs that the dynamic linker won't relocate. */
3979 if ((sec->flags & SEC_ALLOC) == 0)
3983 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3987 BFD_ASSERT (is_ppc_elf (abfd));
3989 /* Initialize howto table if not already done. */
3990 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3991 ppc_elf_howto_init ();
3993 htab = ppc_elf_hash_table (info);
3994 if (htab->glink == NULL)
3996 if (htab->elf.dynobj == NULL)
3997 htab->elf.dynobj = abfd;
3998 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
4001 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4002 FALSE, FALSE, TRUE);
4003 symtab_hdr = &elf_symtab_hdr (abfd);
4004 sym_hashes = elf_sym_hashes (abfd);
4005 got2 = bfd_get_section_by_name (abfd, ".got2");
4008 rel_end = relocs + sec->reloc_count;
4009 for (rel = relocs; rel < rel_end; rel++)
4011 unsigned long r_symndx;
4012 enum elf_ppc_reloc_type r_type;
4013 struct elf_link_hash_entry *h;
4015 struct plt_entry **ifunc;
4017 r_symndx = ELF32_R_SYM (rel->r_info);
4018 if (r_symndx < symtab_hdr->sh_info)
4022 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4023 while (h->root.type == bfd_link_hash_indirect
4024 || h->root.type == bfd_link_hash_warning)
4025 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4027 /* PR15323, ref flags aren't set for references in the same
4029 h->root.non_ir_ref = 1;
4032 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4033 This shows up in particular in an R_PPC_ADDR32 in the eabi
4036 && htab->elf.sgot == NULL
4037 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4039 if (htab->elf.dynobj == NULL)
4040 htab->elf.dynobj = abfd;
4041 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4043 BFD_ASSERT (h == htab->elf.hgot);
4047 r_type = ELF32_R_TYPE (rel->r_info);
4049 if (h == NULL && !htab->is_vxworks)
4051 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4056 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4058 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4059 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4064 /* STT_GNU_IFUNC symbols must have a PLT entry;
4065 In a non-pie executable even when there are
4067 if (!bfd_link_pic (info)
4068 || is_branch_reloc (r_type))
4071 if (r_type == R_PPC_PLTREL24)
4073 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4074 if (bfd_link_pic (info))
4075 addend = rel->r_addend;
4077 if (!update_plt_info (abfd, ifunc, got2, addend))
4083 if (!htab->is_vxworks
4084 && is_branch_reloc (r_type)
4089 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4090 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4091 /* We have a new-style __tls_get_addr call with a marker
4095 /* Mark this section as having an old-style call. */
4096 sec->has_tls_get_addr_call = 1;
4103 /* These special tls relocs tie a call to __tls_get_addr with
4104 its parameter symbol. */
4107 case R_PPC_GOT_TLSLD16:
4108 case R_PPC_GOT_TLSLD16_LO:
4109 case R_PPC_GOT_TLSLD16_HI:
4110 case R_PPC_GOT_TLSLD16_HA:
4111 tls_type = TLS_TLS | TLS_LD;
4114 case R_PPC_GOT_TLSGD16:
4115 case R_PPC_GOT_TLSGD16_LO:
4116 case R_PPC_GOT_TLSGD16_HI:
4117 case R_PPC_GOT_TLSGD16_HA:
4118 tls_type = TLS_TLS | TLS_GD;
4121 case R_PPC_GOT_TPREL16:
4122 case R_PPC_GOT_TPREL16_LO:
4123 case R_PPC_GOT_TPREL16_HI:
4124 case R_PPC_GOT_TPREL16_HA:
4125 if (bfd_link_pic (info))
4126 info->flags |= DF_STATIC_TLS;
4127 tls_type = TLS_TLS | TLS_TPREL;
4130 case R_PPC_GOT_DTPREL16:
4131 case R_PPC_GOT_DTPREL16_LO:
4132 case R_PPC_GOT_DTPREL16_HI:
4133 case R_PPC_GOT_DTPREL16_HA:
4134 tls_type = TLS_TLS | TLS_DTPREL;
4136 sec->has_tls_reloc = 1;
4139 /* GOT16 relocations */
4141 case R_PPC_GOT16_LO:
4142 case R_PPC_GOT16_HI:
4143 case R_PPC_GOT16_HA:
4144 /* This symbol requires a global offset table entry. */
4145 if (htab->elf.sgot == NULL)
4147 if (htab->elf.dynobj == NULL)
4148 htab->elf.dynobj = abfd;
4149 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4154 h->got.refcount += 1;
4155 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4158 /* This is a global offset table entry for a local symbol. */
4159 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4162 /* We may also need a plt entry if the symbol turns out to be
4164 if (h != NULL && !bfd_link_pic (info))
4166 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4171 /* Indirect .sdata relocation. */
4172 case R_PPC_EMB_SDAI16:
4173 if (bfd_link_pic (info))
4175 bad_shared_reloc (abfd, r_type);
4178 htab->sdata[0].sym->ref_regular = 1;
4179 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4184 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4185 h->non_got_ref = TRUE;
4189 /* Indirect .sdata2 relocation. */
4190 case R_PPC_EMB_SDA2I16:
4191 if (bfd_link_pic (info))
4193 bad_shared_reloc (abfd, r_type);
4196 htab->sdata[1].sym->ref_regular = 1;
4197 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4202 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4203 h->non_got_ref = TRUE;
4207 case R_PPC_SDAREL16:
4208 htab->sdata[0].sym->ref_regular = 1;
4211 case R_PPC_VLE_SDAREL_LO16A:
4212 case R_PPC_VLE_SDAREL_LO16D:
4213 case R_PPC_VLE_SDAREL_HI16A:
4214 case R_PPC_VLE_SDAREL_HI16D:
4215 case R_PPC_VLE_SDAREL_HA16A:
4216 case R_PPC_VLE_SDAREL_HA16D:
4219 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4220 h->non_got_ref = TRUE;
4224 case R_PPC_VLE_REL8:
4225 case R_PPC_VLE_REL15:
4226 case R_PPC_VLE_REL24:
4227 case R_PPC_VLE_LO16A:
4228 case R_PPC_VLE_LO16D:
4229 case R_PPC_VLE_HI16A:
4230 case R_PPC_VLE_HI16D:
4231 case R_PPC_VLE_HA16A:
4232 case R_PPC_VLE_HA16D:
4235 case R_PPC_EMB_SDA2REL:
4236 if (bfd_link_pic (info))
4238 bad_shared_reloc (abfd, r_type);
4241 htab->sdata[1].sym->ref_regular = 1;
4244 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4245 h->non_got_ref = TRUE;
4249 case R_PPC_VLE_SDA21_LO:
4250 case R_PPC_VLE_SDA21:
4251 case R_PPC_EMB_SDA21:
4252 case R_PPC_EMB_RELSDA:
4253 if (bfd_link_pic (info))
4255 bad_shared_reloc (abfd, r_type);
4260 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4261 h->non_got_ref = TRUE;
4265 case R_PPC_EMB_NADDR32:
4266 case R_PPC_EMB_NADDR16:
4267 case R_PPC_EMB_NADDR16_LO:
4268 case R_PPC_EMB_NADDR16_HI:
4269 case R_PPC_EMB_NADDR16_HA:
4270 if (bfd_link_pic (info))
4272 bad_shared_reloc (abfd, r_type);
4276 h->non_got_ref = TRUE;
4279 case R_PPC_PLTREL24:
4284 case R_PPC_PLTREL32:
4285 case R_PPC_PLT16_LO:
4286 case R_PPC_PLT16_HI:
4287 case R_PPC_PLT16_HA:
4289 fprintf (stderr, "Reloc requires a PLT entry\n");
4291 /* This symbol requires a procedure linkage table entry. */
4296 /* It does not make sense to have a procedure linkage
4297 table entry for a non-ifunc local symbol. */
4298 info->callbacks->einfo
4299 /* xgettext:c-format */
4300 (_("%P: %H: %s reloc against local symbol\n"),
4301 abfd, sec, rel->r_offset,
4302 ppc_elf_howto_table[r_type]->name);
4303 bfd_set_error (bfd_error_bad_value);
4311 if (r_type == R_PPC_PLTREL24)
4313 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4314 if (bfd_link_pic (info))
4315 addend = rel->r_addend;
4318 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4323 /* The following relocations don't need to propagate the
4324 relocation if linking a shared object since they are
4325 section relative. */
4327 case R_PPC_SECTOFF_LO:
4328 case R_PPC_SECTOFF_HI:
4329 case R_PPC_SECTOFF_HA:
4330 case R_PPC_DTPREL16:
4331 case R_PPC_DTPREL16_LO:
4332 case R_PPC_DTPREL16_HI:
4333 case R_PPC_DTPREL16_HA:
4338 case R_PPC_REL16_LO:
4339 case R_PPC_REL16_HI:
4340 case R_PPC_REL16_HA:
4341 case R_PPC_REL16DX_HA:
4342 ppc_elf_tdata (abfd)->has_rel16 = 1;
4345 /* These are just markers. */
4347 case R_PPC_EMB_MRKREF:
4351 case R_PPC_RELAX_PLT:
4352 case R_PPC_RELAX_PLTREL24:
4355 /* These should only appear in dynamic objects. */
4357 case R_PPC_GLOB_DAT:
4358 case R_PPC_JMP_SLOT:
4359 case R_PPC_RELATIVE:
4360 case R_PPC_IRELATIVE:
4363 /* These aren't handled yet. We'll report an error later. */
4365 case R_PPC_EMB_RELSEC16:
4366 case R_PPC_EMB_RELST_LO:
4367 case R_PPC_EMB_RELST_HI:
4368 case R_PPC_EMB_RELST_HA:
4369 case R_PPC_EMB_BIT_FLD:
4372 /* This refers only to functions defined in the shared library. */
4373 case R_PPC_LOCAL24PC:
4374 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4376 htab->plt_type = PLT_OLD;
4377 htab->old_bfd = abfd;
4379 if (h != NULL && h->type == STT_GNU_IFUNC)
4382 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4387 /* This relocation describes the C++ object vtable hierarchy.
4388 Reconstruct it for later use during GC. */
4389 case R_PPC_GNU_VTINHERIT:
4390 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4394 /* This relocation describes which C++ vtable entries are actually
4395 used. Record for later use during GC. */
4396 case R_PPC_GNU_VTENTRY:
4397 BFD_ASSERT (h != NULL);
4399 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4403 /* We shouldn't really be seeing these. */
4406 case R_PPC_TPREL16_LO:
4407 case R_PPC_TPREL16_HI:
4408 case R_PPC_TPREL16_HA:
4409 if (bfd_link_pic (info))
4410 info->flags |= DF_STATIC_TLS;
4414 case R_PPC_DTPMOD32:
4415 case R_PPC_DTPREL32:
4421 && (sec->flags & SEC_CODE) != 0
4422 && bfd_link_pic (info)
4423 && htab->plt_type == PLT_UNSET)
4425 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4426 the start of a function, which assembles to a REL32
4427 reference to .got2. If we detect one of these, then
4428 force the old PLT layout because the linker cannot
4429 reliably deduce the GOT pointer value needed for
4432 Elf_Internal_Sym *isym;
4434 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4439 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4442 htab->plt_type = PLT_OLD;
4443 htab->old_bfd = abfd;
4446 if (h == NULL || h == htab->elf.hgot)
4452 case R_PPC_ADDR16_LO:
4453 case R_PPC_ADDR16_HI:
4454 case R_PPC_ADDR16_HA:
4457 if (h != NULL && !bfd_link_pic (info))
4459 /* We may need a plt entry if the symbol turns out to be
4460 a function defined in a dynamic object. */
4461 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4464 /* We may need a copy reloc too. */
4466 h->pointer_equality_needed = 1;
4467 if (r_type == R_PPC_ADDR16_HA)
4468 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4469 if (r_type == R_PPC_ADDR16_LO)
4470 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4476 case R_PPC_REL14_BRTAKEN:
4477 case R_PPC_REL14_BRNTAKEN:
4480 if (h == htab->elf.hgot)
4482 if (htab->plt_type == PLT_UNSET)
4484 htab->plt_type = PLT_OLD;
4485 htab->old_bfd = abfd;
4493 case R_PPC_ADDR14_BRTAKEN:
4494 case R_PPC_ADDR14_BRNTAKEN:
4495 if (h != NULL && !bfd_link_pic (info))
4497 /* We may need a plt entry if the symbol turns out to be
4498 a function defined in a dynamic object. */
4500 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4506 /* If we are creating a shared library, and this is a reloc
4507 against a global symbol, or a non PC relative reloc
4508 against a local symbol, then we need to copy the reloc
4509 into the shared library. However, if we are linking with
4510 -Bsymbolic, we do not need to copy a reloc against a
4511 global symbol which is defined in an object we are
4512 including in the link (i.e., DEF_REGULAR is set). At
4513 this point we have not seen all the input files, so it is
4514 possible that DEF_REGULAR is not set now but will be set
4515 later (it is never cleared). In case of a weak definition,
4516 DEF_REGULAR may be cleared later by a strong definition in
4517 a shared library. We account for that possibility below by
4518 storing information in the dyn_relocs field of the hash
4519 table entry. A similar situation occurs when creating
4520 shared libraries and symbol visibility changes render the
4523 If on the other hand, we are creating an executable, we
4524 may need to keep relocations for symbols satisfied by a
4525 dynamic library if we manage to avoid copy relocs for the
4527 if ((bfd_link_pic (info)
4528 && (must_be_dyn_reloc (info, r_type)
4530 && (!SYMBOLIC_BIND (info, h)
4531 || h->root.type == bfd_link_hash_defweak
4532 || !h->def_regular))))
4533 || (ELIMINATE_COPY_RELOCS
4534 && !bfd_link_pic (info)
4536 && (h->root.type == bfd_link_hash_defweak
4537 || !h->def_regular)))
4541 "ppc_elf_check_relocs needs to "
4542 "create relocation for %s\n",
4543 (h && h->root.root.string
4544 ? h->root.root.string : "<unknown>"));
4548 if (htab->elf.dynobj == NULL)
4549 htab->elf.dynobj = abfd;
4551 sreloc = _bfd_elf_make_dynamic_reloc_section
4552 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4558 /* If this is a global symbol, we count the number of
4559 relocations we need for this symbol. */
4562 struct elf_dyn_relocs *p;
4563 struct elf_dyn_relocs **rel_head;
4565 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4567 if (p == NULL || p->sec != sec)
4569 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4572 p->next = *rel_head;
4579 if (!must_be_dyn_reloc (info, r_type))
4584 /* Track dynamic relocs needed for local syms too.
4585 We really need local syms available to do this
4587 struct ppc_dyn_relocs *p;
4588 struct ppc_dyn_relocs **rel_head;
4589 bfd_boolean is_ifunc;
4592 Elf_Internal_Sym *isym;
4594 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4599 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4603 vpp = &elf_section_data (s)->local_dynrel;
4604 rel_head = (struct ppc_dyn_relocs **) vpp;
4605 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4607 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4609 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4611 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4614 p->next = *rel_head;
4617 p->ifunc = is_ifunc;
4631 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4632 and OBFD, and merge non-conflicting ones. */
4634 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4636 bfd *obfd = info->output_bfd;
4637 obj_attribute *in_attr, *in_attrs;
4638 obj_attribute *out_attr, *out_attrs;
4640 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4641 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4643 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4644 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4646 if (in_attr->i != out_attr->i)
4648 int in_fp = in_attr->i & 3;
4649 int out_fp = out_attr->i & 3;
4653 else if (out_fp == 0)
4656 out_attr->i ^= in_fp;
4658 else if (out_fp != 2 && in_fp == 2)
4660 /* xgettext:c-format */
4661 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4662 else if (out_fp == 2 && in_fp != 2)
4664 /* xgettext:c-format */
4665 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4666 else if (out_fp == 1 && in_fp == 3)
4668 /* xgettext:c-format */
4669 (_("Warning: %B uses double-precision hard float, "
4670 "%B uses single-precision hard float"), obfd, ibfd);
4671 else if (out_fp == 3 && in_fp == 1)
4673 /* xgettext:c-format */
4674 (_("Warning: %B uses double-precision hard float, "
4675 "%B uses single-precision hard float"), ibfd, obfd);
4677 in_fp = in_attr->i & 0xc;
4678 out_fp = out_attr->i & 0xc;
4681 else if (out_fp == 0)
4684 out_attr->i ^= in_fp;
4686 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4688 /* xgettext:c-format */
4689 (_("Warning: %B uses 64-bit long double, "
4690 "%B uses 128-bit long double"), ibfd, obfd);
4691 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4693 /* xgettext:c-format */
4694 (_("Warning: %B uses 64-bit long double, "
4695 "%B uses 128-bit long double"), obfd, ibfd);
4696 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4698 /* xgettext:c-format */
4699 (_("Warning: %B uses IBM long double, "
4700 "%B uses IEEE long double"), ibfd, obfd);
4701 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4703 /* xgettext:c-format */
4704 (_("Warning: %B uses IBM long double, "
4705 "%B uses IEEE long double"), obfd, ibfd);
4709 /* Merge object attributes from IBFD into OBFD. Warn if
4710 there are conflicting attributes. */
4712 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4715 obj_attribute *in_attr, *in_attrs;
4716 obj_attribute *out_attr, *out_attrs;
4718 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4720 obfd = info->output_bfd;
4721 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4722 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4724 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4725 merge non-conflicting ones. */
4726 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4727 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4728 if (in_attr->i != out_attr->i)
4730 int in_vec = in_attr->i & 3;
4731 int out_vec = out_attr->i & 3;
4735 else if (out_vec == 0)
4738 out_attr->i = in_vec;
4740 /* For now, allow generic to transition to AltiVec or SPE
4741 without a warning. If GCC marked files with their stack
4742 alignment and used don't-care markings for files which are
4743 not affected by the vector ABI, we could warn about this
4745 else if (in_vec == 1)
4747 else if (out_vec == 1)
4750 out_attr->i = in_vec;
4752 else if (out_vec < in_vec)
4754 /* xgettext:c-format */
4755 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4757 else if (out_vec > in_vec)
4759 /* xgettext:c-format */
4760 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4764 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4765 and merge non-conflicting ones. */
4766 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4767 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4768 if (in_attr->i != out_attr->i)
4770 int in_struct = in_attr->i & 3;
4771 int out_struct = out_attr->i & 3;
4773 if (in_struct == 0 || in_struct == 3)
4775 else if (out_struct == 0)
4778 out_attr->i = in_struct;
4780 else if (out_struct < in_struct)
4782 /* xgettext:c-format */
4783 (_("Warning: %B uses r3/r4 for small structure returns, "
4784 "%B uses memory"), obfd, ibfd);
4785 else if (out_struct > in_struct)
4787 /* xgettext:c-format */
4788 (_("Warning: %B uses r3/r4 for small structure returns, "
4789 "%B uses memory"), ibfd, obfd);
4792 /* Merge Tag_compatibility attributes and any common GNU ones. */
4793 _bfd_elf_merge_object_attributes (ibfd, info);
4798 /* Merge backend specific data from an object file to the output
4799 object file when linking. */
4802 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4804 bfd *obfd = info->output_bfd;
4809 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4812 /* Check if we have the same endianness. */
4813 if (! _bfd_generic_verify_endian_match (ibfd, info))
4816 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4819 new_flags = elf_elfheader (ibfd)->e_flags;
4820 old_flags = elf_elfheader (obfd)->e_flags;
4821 if (!elf_flags_init (obfd))
4823 /* First call, no flags set. */
4824 elf_flags_init (obfd) = TRUE;
4825 elf_elfheader (obfd)->e_flags = new_flags;
4828 /* Compatible flags are ok. */
4829 else if (new_flags == old_flags)
4832 /* Incompatible flags. */
4835 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4836 to be linked with either. */
4838 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4839 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4843 (_("%B: compiled with -mrelocatable and linked with "
4844 "modules compiled normally"), ibfd);
4846 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4847 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4851 (_("%B: compiled normally and linked with "
4852 "modules compiled with -mrelocatable"), ibfd);
4855 /* The output is -mrelocatable-lib iff both the input files are. */
4856 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4857 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4859 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4860 but each input file is either -mrelocatable or -mrelocatable-lib. */
4861 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4862 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4863 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4864 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4866 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4867 any module uses it. */
4868 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4870 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4871 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4873 /* Warn about any other mismatches. */
4874 if (new_flags != old_flags)
4878 /* xgettext:c-format */
4879 (_("%B: uses different e_flags (0x%lx) fields "
4880 "than previous modules (0x%lx)"),
4881 ibfd, (long) new_flags, (long) old_flags);
4886 bfd_set_error (bfd_error_bad_value);
4895 ppc_elf_vle_split16 (bfd *input_bfd,
4896 asection *input_section,
4897 unsigned long offset,
4900 split16_format_type split16_format,
4903 unsigned int insn, opcode, top5;
4905 insn = bfd_get_32 (input_bfd, loc);
4906 opcode = insn & 0xf300f800;
4907 if (opcode == E_OR2I_INSN
4908 || opcode == E_AND2I_DOT_INSN
4909 || opcode == E_OR2IS_INSN
4910 || opcode == E_LIS_INSN
4911 || opcode == E_AND2IS_DOT_INSN)
4913 if (split16_format != split16a_type)
4916 split16_format = split16a_type;
4919 /* xgettext:c-format */
4920 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4921 input_bfd, input_section, offset, opcode);
4924 else if (opcode == E_ADD2I_DOT_INSN
4925 || opcode == E_ADD2IS_INSN
4926 || opcode == E_CMP16I_INSN
4927 || opcode == E_MULL2I_INSN
4928 || opcode == E_CMPL16I_INSN
4929 || opcode == E_CMPH16I_INSN
4930 || opcode == E_CMPHL16I_INSN)
4932 if (split16_format != split16d_type)
4935 split16_format = split16d_type;
4938 /* xgettext:c-format */
4939 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4940 input_bfd, input_section, offset, opcode);
4943 top5 = value & 0xf800;
4944 top5 = top5 << (split16_format == split16a_type ? 5 : 9);
4945 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x1f007ff);
4947 insn |= value & 0x7ff;
4948 bfd_put_32 (input_bfd, insn, loc);
4951 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4952 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4954 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4955 struct bfd_link_info *info)
4957 struct ppc_elf_link_hash_table *htab;
4960 htab = ppc_elf_hash_table (info);
4962 if (htab->plt_type == PLT_UNSET)
4964 struct elf_link_hash_entry *h;
4966 if (htab->params->plt_style == PLT_OLD)
4967 htab->plt_type = PLT_OLD;
4968 else if (bfd_link_pic (info)
4969 && htab->elf.dynamic_sections_created
4970 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4971 FALSE, FALSE, TRUE)) != NULL
4972 && (h->type == STT_FUNC
4975 && !(SYMBOL_CALLS_LOCAL (info, h)
4976 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4977 && h->root.type == bfd_link_hash_undefweak)))
4979 /* Profiling of shared libs (and pies) is not supported with
4980 secure plt, because ppc32 does profiling before a
4981 function prologue and a secure plt pic call stubs needs
4982 r30 to be set up. */
4983 htab->plt_type = PLT_OLD;
4988 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4990 /* Look through the reloc flags left by ppc_elf_check_relocs.
4991 Use the old style bss plt if a file makes plt calls
4992 without using the new relocs, and if ld isn't given
4993 --secure-plt and we never see REL16 relocs. */
4994 if (plt_type == PLT_UNSET)
4996 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4997 if (is_ppc_elf (ibfd))
4999 if (ppc_elf_tdata (ibfd)->has_rel16)
5001 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
5004 htab->old_bfd = ibfd;
5008 htab->plt_type = plt_type;
5011 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5013 if (htab->old_bfd != NULL)
5014 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5017 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5020 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5022 if (htab->plt_type == PLT_NEW)
5024 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5025 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5027 /* The new PLT is a loaded section. */
5028 if (htab->elf.splt != NULL
5029 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5032 /* The new GOT is not executable. */
5033 if (htab->elf.sgot != NULL
5034 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5039 /* Stop an unused .glink section from affecting .text alignment. */
5040 if (htab->glink != NULL
5041 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5044 return htab->plt_type == PLT_NEW;
5047 /* Return the section that should be marked against GC for a given
5051 ppc_elf_gc_mark_hook (asection *sec,
5052 struct bfd_link_info *info,
5053 Elf_Internal_Rela *rel,
5054 struct elf_link_hash_entry *h,
5055 Elf_Internal_Sym *sym)
5058 switch (ELF32_R_TYPE (rel->r_info))
5060 case R_PPC_GNU_VTINHERIT:
5061 case R_PPC_GNU_VTENTRY:
5065 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5068 /* Update the got, plt and dynamic reloc reference counts for the
5069 section being removed. */
5072 ppc_elf_gc_sweep_hook (bfd *abfd,
5073 struct bfd_link_info *info,
5075 const Elf_Internal_Rela *relocs)
5077 struct ppc_elf_link_hash_table *htab;
5078 Elf_Internal_Shdr *symtab_hdr;
5079 struct elf_link_hash_entry **sym_hashes;
5080 bfd_signed_vma *local_got_refcounts;
5081 const Elf_Internal_Rela *rel, *relend;
5084 if (bfd_link_relocatable (info))
5087 if ((sec->flags & SEC_ALLOC) == 0)
5090 elf_section_data (sec)->local_dynrel = NULL;
5092 htab = ppc_elf_hash_table (info);
5093 symtab_hdr = &elf_symtab_hdr (abfd);
5094 sym_hashes = elf_sym_hashes (abfd);
5095 local_got_refcounts = elf_local_got_refcounts (abfd);
5096 got2 = bfd_get_section_by_name (abfd, ".got2");
5098 relend = relocs + sec->reloc_count;
5099 for (rel = relocs; rel < relend; rel++)
5101 unsigned long r_symndx;
5102 enum elf_ppc_reloc_type r_type;
5103 struct elf_link_hash_entry *h = NULL;
5105 r_symndx = ELF32_R_SYM (rel->r_info);
5106 if (r_symndx >= symtab_hdr->sh_info)
5108 struct elf_dyn_relocs **pp, *p;
5109 struct ppc_elf_link_hash_entry *eh;
5111 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5112 while (h->root.type == bfd_link_hash_indirect
5113 || h->root.type == bfd_link_hash_warning)
5114 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5115 eh = (struct ppc_elf_link_hash_entry *) h;
5117 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5120 /* Everything must go for SEC. */
5126 r_type = ELF32_R_TYPE (rel->r_info);
5127 if (!htab->is_vxworks
5129 && local_got_refcounts != NULL
5130 && (!bfd_link_pic (info)
5131 || is_branch_reloc (r_type)))
5133 struct plt_entry **local_plt = (struct plt_entry **)
5134 (local_got_refcounts + symtab_hdr->sh_info);
5135 char *local_got_tls_masks = (char *)
5136 (local_plt + symtab_hdr->sh_info);
5137 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5139 struct plt_entry **ifunc = local_plt + r_symndx;
5141 struct plt_entry *ent;
5143 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5144 addend = rel->r_addend;
5145 ent = find_plt_ent (ifunc, got2, addend);
5146 if (ent->plt.refcount > 0)
5147 ent->plt.refcount -= 1;
5154 case R_PPC_GOT_TLSLD16:
5155 case R_PPC_GOT_TLSLD16_LO:
5156 case R_PPC_GOT_TLSLD16_HI:
5157 case R_PPC_GOT_TLSLD16_HA:
5158 case R_PPC_GOT_TLSGD16:
5159 case R_PPC_GOT_TLSGD16_LO:
5160 case R_PPC_GOT_TLSGD16_HI:
5161 case R_PPC_GOT_TLSGD16_HA:
5162 case R_PPC_GOT_TPREL16:
5163 case R_PPC_GOT_TPREL16_LO:
5164 case R_PPC_GOT_TPREL16_HI:
5165 case R_PPC_GOT_TPREL16_HA:
5166 case R_PPC_GOT_DTPREL16:
5167 case R_PPC_GOT_DTPREL16_LO:
5168 case R_PPC_GOT_DTPREL16_HI:
5169 case R_PPC_GOT_DTPREL16_HA:
5171 case R_PPC_GOT16_LO:
5172 case R_PPC_GOT16_HI:
5173 case R_PPC_GOT16_HA:
5176 if (h->got.refcount > 0)
5178 if (!bfd_link_pic (info))
5180 struct plt_entry *ent;
5182 ent = find_plt_ent (&h->plt.plist, NULL, 0);
5183 if (ent != NULL && ent->plt.refcount > 0)
5184 ent->plt.refcount -= 1;
5187 else if (local_got_refcounts != NULL)
5189 if (local_got_refcounts[r_symndx] > 0)
5190 local_got_refcounts[r_symndx]--;
5196 case R_PPC_REL14_BRTAKEN:
5197 case R_PPC_REL14_BRNTAKEN:
5199 if (h == NULL || h == htab->elf.hgot)
5206 case R_PPC_ADDR16_LO:
5207 case R_PPC_ADDR16_HI:
5208 case R_PPC_ADDR16_HA:
5210 case R_PPC_ADDR14_BRTAKEN:
5211 case R_PPC_ADDR14_BRNTAKEN:
5214 if (bfd_link_pic (info))
5219 case R_PPC_PLTREL24:
5220 case R_PPC_PLTREL32:
5221 case R_PPC_PLT16_LO:
5222 case R_PPC_PLT16_HI:
5223 case R_PPC_PLT16_HA:
5227 struct plt_entry *ent;
5229 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
5230 addend = rel->r_addend;
5231 ent = find_plt_ent (&h->plt.plist, got2, addend);
5232 if (ent != NULL && ent->plt.refcount > 0)
5233 ent->plt.refcount -= 1;
5244 /* Set plt output section type, htab->tls_get_addr, and call the
5245 generic ELF tls_setup function. */
5248 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5250 struct ppc_elf_link_hash_table *htab;
5252 htab = ppc_elf_hash_table (info);
5253 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5254 FALSE, FALSE, TRUE);
5255 if (htab->plt_type != PLT_NEW)
5256 htab->params->no_tls_get_addr_opt = TRUE;
5258 if (!htab->params->no_tls_get_addr_opt)
5260 struct elf_link_hash_entry *opt, *tga;
5261 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5262 FALSE, FALSE, TRUE);
5264 && (opt->root.type == bfd_link_hash_defined
5265 || opt->root.type == bfd_link_hash_defweak))
5267 /* If glibc supports an optimized __tls_get_addr call stub,
5268 signalled by the presence of __tls_get_addr_opt, and we'll
5269 be calling __tls_get_addr via a plt call stub, then
5270 make __tls_get_addr point to __tls_get_addr_opt. */
5271 tga = htab->tls_get_addr;
5272 if (htab->elf.dynamic_sections_created
5274 && (tga->type == STT_FUNC
5276 && !(SYMBOL_CALLS_LOCAL (info, tga)
5277 || (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
5278 && tga->root.type == bfd_link_hash_undefweak)))
5280 struct plt_entry *ent;
5281 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5282 if (ent->plt.refcount > 0)
5286 tga->root.type = bfd_link_hash_indirect;
5287 tga->root.u.i.link = &opt->root;
5288 ppc_elf_copy_indirect_symbol (info, opt, tga);
5289 opt->forced_local = 0;
5290 if (opt->dynindx != -1)
5292 /* Use __tls_get_addr_opt in dynamic relocations. */
5294 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5296 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5299 htab->tls_get_addr = opt;
5304 htab->params->no_tls_get_addr_opt = TRUE;
5306 if (htab->plt_type == PLT_NEW
5307 && htab->elf.splt != NULL
5308 && htab->elf.splt->output_section != NULL)
5310 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5311 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5314 return _bfd_elf_tls_setup (obfd, info);
5317 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5321 branch_reloc_hash_match (const bfd *ibfd,
5322 const Elf_Internal_Rela *rel,
5323 const struct elf_link_hash_entry *hash)
5325 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5326 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5327 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5329 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5331 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5332 struct elf_link_hash_entry *h;
5334 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5335 while (h->root.type == bfd_link_hash_indirect
5336 || h->root.type == bfd_link_hash_warning)
5337 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5344 /* Run through all the TLS relocs looking for optimization
5348 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5349 struct bfd_link_info *info)
5353 struct ppc_elf_link_hash_table *htab;
5356 if (!bfd_link_executable (info))
5359 htab = ppc_elf_hash_table (info);
5363 /* Make two passes through the relocs. First time check that tls
5364 relocs involved in setting up a tls_get_addr call are indeed
5365 followed by such a call. If they are not, don't do any tls
5366 optimization. On the second pass twiddle tls_mask flags to
5367 notify relocate_section that optimization can be done, and
5368 adjust got and plt refcounts. */
5369 for (pass = 0; pass < 2; ++pass)
5370 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5372 Elf_Internal_Sym *locsyms = NULL;
5373 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5374 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5376 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5377 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5379 Elf_Internal_Rela *relstart, *rel, *relend;
5380 int expecting_tls_get_addr = 0;
5382 /* Read the relocations. */
5383 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5385 if (relstart == NULL)
5388 relend = relstart + sec->reloc_count;
5389 for (rel = relstart; rel < relend; rel++)
5391 enum elf_ppc_reloc_type r_type;
5392 unsigned long r_symndx;
5393 struct elf_link_hash_entry *h = NULL;
5395 char tls_set, tls_clear;
5396 bfd_boolean is_local;
5397 bfd_signed_vma *got_count;
5399 r_symndx = ELF32_R_SYM (rel->r_info);
5400 if (r_symndx >= symtab_hdr->sh_info)
5402 struct elf_link_hash_entry **sym_hashes;
5404 sym_hashes = elf_sym_hashes (ibfd);
5405 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5406 while (h->root.type == bfd_link_hash_indirect
5407 || h->root.type == bfd_link_hash_warning)
5408 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5416 r_type = ELF32_R_TYPE (rel->r_info);
5417 /* If this section has old-style __tls_get_addr calls
5418 without marker relocs, then check that each
5419 __tls_get_addr call reloc is preceded by a reloc
5420 that conceivably belongs to the __tls_get_addr arg
5421 setup insn. If we don't find matching arg setup
5422 relocs, don't do any tls optimization. */
5424 && sec->has_tls_get_addr_call
5426 && h == htab->tls_get_addr
5427 && !expecting_tls_get_addr
5428 && is_branch_reloc (r_type))
5430 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5431 "TLS optimization disabled\n",
5432 ibfd, sec, rel->r_offset);
5433 if (elf_section_data (sec)->relocs != relstart)
5438 expecting_tls_get_addr = 0;
5441 case R_PPC_GOT_TLSLD16:
5442 case R_PPC_GOT_TLSLD16_LO:
5443 expecting_tls_get_addr = 1;
5446 case R_PPC_GOT_TLSLD16_HI:
5447 case R_PPC_GOT_TLSLD16_HA:
5448 /* These relocs should never be against a symbol
5449 defined in a shared lib. Leave them alone if
5450 that turns out to be the case. */
5459 case R_PPC_GOT_TLSGD16:
5460 case R_PPC_GOT_TLSGD16_LO:
5461 expecting_tls_get_addr = 1;
5464 case R_PPC_GOT_TLSGD16_HI:
5465 case R_PPC_GOT_TLSGD16_HA:
5471 tls_set = TLS_TLS | TLS_TPRELGD;
5475 case R_PPC_GOT_TPREL16:
5476 case R_PPC_GOT_TPREL16_LO:
5477 case R_PPC_GOT_TPREL16_HI:
5478 case R_PPC_GOT_TPREL16_HA:
5483 tls_clear = TLS_TPREL;
5491 expecting_tls_get_addr = 2;
5502 if (!expecting_tls_get_addr
5503 || (expecting_tls_get_addr == 1
5504 && !sec->has_tls_get_addr_call))
5507 if (rel + 1 < relend
5508 && branch_reloc_hash_match (ibfd, rel + 1,
5509 htab->tls_get_addr))
5512 /* Uh oh, we didn't find the expected call. We
5513 could just mark this symbol to exclude it
5514 from tls optimization but it's safer to skip
5515 the entire optimization. */
5516 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5517 "TLS optimization disabled\n"),
5518 ibfd, sec, rel->r_offset);
5519 if (elf_section_data (sec)->relocs != relstart)
5524 if (expecting_tls_get_addr)
5526 struct plt_entry *ent;
5529 if (bfd_link_pic (info)
5530 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5531 addend = rel[1].r_addend;
5532 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5534 if (ent != NULL && ent->plt.refcount > 0)
5535 ent->plt.refcount -= 1;
5537 if (expecting_tls_get_addr == 2)
5543 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5544 got_count = &h->got.refcount;
5548 bfd_signed_vma *lgot_refs;
5549 struct plt_entry **local_plt;
5552 if (locsyms == NULL)
5554 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5555 if (locsyms == NULL)
5556 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5557 symtab_hdr->sh_info,
5558 0, NULL, NULL, NULL);
5559 if (locsyms == NULL)
5561 if (elf_section_data (sec)->relocs != relstart)
5566 lgot_refs = elf_local_got_refcounts (ibfd);
5567 if (lgot_refs == NULL)
5569 local_plt = (struct plt_entry **)
5570 (lgot_refs + symtab_hdr->sh_info);
5571 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5572 tls_mask = &lgot_masks[r_symndx];
5573 got_count = &lgot_refs[r_symndx];
5578 /* We managed to get rid of a got entry. */
5583 *tls_mask |= tls_set;
5584 *tls_mask &= ~tls_clear;
5587 if (elf_section_data (sec)->relocs != relstart)
5592 && (symtab_hdr->contents != (unsigned char *) locsyms))
5594 if (!info->keep_memory)
5597 symtab_hdr->contents = (unsigned char *) locsyms;
5603 /* Return true if we have dynamic relocs that apply to read-only sections. */
5606 readonly_dynrelocs (struct elf_link_hash_entry *h)
5608 struct elf_dyn_relocs *p;
5610 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5612 asection *s = p->sec->output_section;
5615 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
5616 == (SEC_READONLY | SEC_ALLOC)))
5622 /* Adjust a symbol defined by a dynamic object and referenced by a
5623 regular object. The current definition is in some section of the
5624 dynamic object, but we're not including those sections. We have to
5625 change the definition to something the rest of the link can
5629 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5630 struct elf_link_hash_entry *h)
5632 struct ppc_elf_link_hash_table *htab;
5636 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5637 h->root.root.string);
5640 /* Make sure we know what is going on here. */
5641 htab = ppc_elf_hash_table (info);
5642 BFD_ASSERT (htab->elf.dynobj != NULL
5644 || h->type == STT_GNU_IFUNC
5645 || h->u.weakdef != NULL
5648 && !h->def_regular)));
5650 /* Deal with function syms. */
5651 if (h->type == STT_FUNC
5652 || h->type == STT_GNU_IFUNC
5655 /* Clear procedure linkage table information for any symbol that
5656 won't need a .plt entry. */
5657 struct plt_entry *ent;
5658 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5659 if (ent->plt.refcount > 0)
5662 || (h->type != STT_GNU_IFUNC
5663 && (SYMBOL_CALLS_LOCAL (info, h)
5664 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5665 && h->root.type == bfd_link_hash_undefweak))))
5667 /* A PLT entry is not required/allowed when:
5669 1. We are not using ld.so; because then the PLT entry
5670 can't be set up, so we can't use one. In this case,
5671 ppc_elf_adjust_dynamic_symbol won't even be called.
5673 2. GC has rendered the entry unused.
5675 3. We know for certain that a call to this symbol
5676 will go to this object, or will remain undefined. */
5677 h->plt.plist = NULL;
5679 h->pointer_equality_needed = 0;
5683 /* Taking a function's address in a read/write section
5684 doesn't require us to define the function symbol in the
5685 executable on a plt call stub. A dynamic reloc can
5687 if (h->pointer_equality_needed
5688 && h->type != STT_GNU_IFUNC
5689 && !htab->is_vxworks
5690 && !ppc_elf_hash_entry (h)->has_sda_refs
5691 && !readonly_dynrelocs (h))
5693 h->pointer_equality_needed = 0;
5697 /* After adjust_dynamic_symbol, non_got_ref set in the
5698 non-shared case means that we have allocated space in
5699 .dynbss for the symbol and thus dyn_relocs for this
5700 symbol should be discarded.
5701 If we get here we know we are making a PLT entry for this
5702 symbol, and in an executable we'd normally resolve
5703 relocations against this symbol to the PLT entry. Allow
5704 dynamic relocs if the reference is weak, and the dynamic
5705 relocs will not cause text relocation. */
5706 else if (!h->ref_regular_nonweak
5708 && h->type != STT_GNU_IFUNC
5709 && !htab->is_vxworks
5710 && !ppc_elf_hash_entry (h)->has_sda_refs
5711 && !readonly_dynrelocs (h))
5714 h->protected_def = 0;
5718 h->plt.plist = NULL;
5720 /* If this is a weak symbol, and there is a real definition, the
5721 processor independent code will have arranged for us to see the
5722 real definition first, and we can just use the same value. */
5723 if (h->u.weakdef != NULL)
5725 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5726 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5727 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5728 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5729 if (ELIMINATE_COPY_RELOCS)
5730 h->non_got_ref = h->u.weakdef->non_got_ref;
5734 /* This is a reference to a symbol defined by a dynamic object which
5735 is not a function. */
5737 /* If we are creating a shared library, we must presume that the
5738 only references to the symbol are via the global offset table.
5739 For such cases we need not do anything here; the relocations will
5740 be handled correctly by relocate_section. */
5741 if (bfd_link_pic (info))
5743 h->protected_def = 0;
5747 /* If there are no references to this symbol that do not use the
5748 GOT, we don't need to generate a copy reloc. */
5749 if (!h->non_got_ref)
5751 h->protected_def = 0;
5755 /* Protected variables do not work with .dynbss. The copy in
5756 .dynbss won't be used by the shared library with the protected
5757 definition for the variable. Editing to PIC, or text relocations
5758 are preferable to an incorrect program. */
5759 if (h->protected_def)
5761 if (ELIMINATE_COPY_RELOCS
5762 && ppc_elf_hash_entry (h)->has_addr16_ha
5763 && ppc_elf_hash_entry (h)->has_addr16_lo
5764 && htab->params->pic_fixup == 0
5765 && info->disable_target_specific_optimizations <= 1)
5766 htab->params->pic_fixup = 1;
5771 /* If -z nocopyreloc was given, we won't generate them either. */
5772 if (info->nocopyreloc)
5778 /* If we didn't find any dynamic relocs in read-only sections, then
5779 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5780 We can't do this if there are any small data relocations. This
5781 doesn't work on VxWorks, where we can not have dynamic
5782 relocations (other than copy and jump slot relocations) in an
5784 if (ELIMINATE_COPY_RELOCS
5785 && !ppc_elf_hash_entry (h)->has_sda_refs
5786 && !htab->is_vxworks
5788 && !readonly_dynrelocs (h))
5794 /* We must allocate the symbol in our .dynbss section, which will
5795 become part of the .bss section of the executable. There will be
5796 an entry for this symbol in the .dynsym section. The dynamic
5797 object will contain position independent code, so all references
5798 from the dynamic object to this symbol will go through the global
5799 offset table. The dynamic linker will use the .dynsym entry to
5800 determine the address it must put in the global offset table, so
5801 both the dynamic object and the regular object will refer to the
5802 same memory location for the variable.
5804 Of course, if the symbol is referenced using SDAREL relocs, we
5805 must instead allocate it in .sbss. */
5807 if (ppc_elf_hash_entry (h)->has_sda_refs)
5810 s = htab->elf.sdynbss;
5811 BFD_ASSERT (s != NULL);
5813 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5814 copy the initial value out of the dynamic object and into the
5815 runtime process image. We need to remember the offset into the
5816 .rela.bss section we are going to use. */
5817 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5821 if (ppc_elf_hash_entry (h)->has_sda_refs)
5822 srel = htab->relsbss;
5824 srel = htab->elf.srelbss;
5825 BFD_ASSERT (srel != NULL);
5826 srel->size += sizeof (Elf32_External_Rela);
5830 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5833 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5834 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5835 specifying the addend on the plt relocation. For -fpic code, the sym
5836 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5837 xxxxxxxx.got2.plt_pic32.<callee>. */
5840 add_stub_sym (struct plt_entry *ent,
5841 struct elf_link_hash_entry *h,
5842 struct bfd_link_info *info)
5844 struct elf_link_hash_entry *sh;
5845 size_t len1, len2, len3;
5848 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5850 if (bfd_link_pic (info))
5851 stub = ".plt_pic32.";
5853 stub = ".plt_call32.";
5855 len1 = strlen (h->root.root.string);
5856 len2 = strlen (stub);
5859 len3 = strlen (ent->sec->name);
5860 name = bfd_malloc (len1 + len2 + len3 + 9);
5863 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5865 memcpy (name + 8, ent->sec->name, len3);
5866 memcpy (name + 8 + len3, stub, len2);
5867 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5868 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5871 if (sh->root.type == bfd_link_hash_new)
5873 sh->root.type = bfd_link_hash_defined;
5874 sh->root.u.def.section = htab->glink;
5875 sh->root.u.def.value = ent->glink_offset;
5876 sh->ref_regular = 1;
5877 sh->def_regular = 1;
5878 sh->ref_regular_nonweak = 1;
5879 sh->forced_local = 1;
5881 sh->root.linker_def = 1;
5886 /* Allocate NEED contiguous space in .got, and return the offset.
5887 Handles allocation of the got header when crossing 32k. */
5890 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5893 unsigned int max_before_header;
5895 if (htab->plt_type == PLT_VXWORKS)
5897 where = htab->elf.sgot->size;
5898 htab->elf.sgot->size += need;
5902 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5903 if (need <= htab->got_gap)
5905 where = max_before_header - htab->got_gap;
5906 htab->got_gap -= need;
5910 if (htab->elf.sgot->size + need > max_before_header
5911 && htab->elf.sgot->size <= max_before_header)
5913 htab->got_gap = max_before_header - htab->elf.sgot->size;
5914 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5916 where = htab->elf.sgot->size;
5917 htab->elf.sgot->size += need;
5923 /* Allocate space in associated reloc sections for dynamic relocs. */
5926 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5928 struct bfd_link_info *info = inf;
5929 struct ppc_elf_link_hash_entry *eh;
5930 struct ppc_elf_link_hash_table *htab;
5931 struct elf_dyn_relocs *p;
5933 if (h->root.type == bfd_link_hash_indirect)
5936 htab = ppc_elf_hash_table (info);
5937 if (htab->elf.dynamic_sections_created
5938 || h->type == STT_GNU_IFUNC)
5940 struct plt_entry *ent;
5941 bfd_boolean doneone = FALSE;
5942 bfd_vma plt_offset = 0, glink_offset = 0;
5945 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5946 if (ent->plt.refcount > 0)
5948 /* Make sure this symbol is output as a dynamic symbol. */
5949 if (h->dynindx == -1
5952 && htab->elf.dynamic_sections_created)
5954 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5958 dyn = htab->elf.dynamic_sections_created;
5959 if (bfd_link_pic (info)
5960 || h->type == STT_GNU_IFUNC
5961 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5963 asection *s = htab->elf.splt;
5964 if (!dyn || h->dynindx == -1)
5967 if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
5971 plt_offset = s->size;
5974 ent->plt.offset = plt_offset;
5977 if (!doneone || bfd_link_pic (info))
5979 glink_offset = s->size;
5980 s->size += GLINK_ENTRY_SIZE;
5981 if (h == htab->tls_get_addr
5982 && !htab->params->no_tls_get_addr_opt)
5983 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
5986 && !bfd_link_pic (info)
5990 h->root.u.def.section = s;
5991 h->root.u.def.value = glink_offset;
5993 ent->glink_offset = glink_offset;
5995 if (htab->params->emit_stub_syms
5996 && !add_stub_sym (ent, h, info))
6003 /* If this is the first .plt entry, make room
6004 for the special first entry. */
6006 s->size += htab->plt_initial_entry_size;
6008 /* The PowerPC PLT is actually composed of two
6009 parts, the first part is 2 words (for a load
6010 and a jump), and then there is a remaining
6011 word available at the end. */
6012 plt_offset = (htab->plt_initial_entry_size
6013 + (htab->plt_slot_size
6015 - htab->plt_initial_entry_size)
6016 / htab->plt_entry_size)));
6018 /* If this symbol is not defined in a regular
6019 file, and we are not generating a shared
6020 library, then set the symbol to this location
6021 in the .plt. This is to avoid text
6022 relocations, and is required to make
6023 function pointers compare as equal between
6024 the normal executable and the shared library. */
6025 if (! bfd_link_pic (info)
6029 h->root.u.def.section = s;
6030 h->root.u.def.value = plt_offset;
6033 /* Make room for this entry. */
6034 s->size += htab->plt_entry_size;
6035 /* After the 8192nd entry, room for two entries
6037 if (htab->plt_type == PLT_OLD
6038 && (s->size - htab->plt_initial_entry_size)
6039 / htab->plt_entry_size
6040 > PLT_NUM_SINGLE_ENTRIES)
6041 s->size += htab->plt_entry_size;
6043 ent->plt.offset = plt_offset;
6046 /* We also need to make an entry in the .rela.plt section. */
6049 if (!htab->elf.dynamic_sections_created
6050 || h->dynindx == -1)
6051 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6054 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6056 if (htab->plt_type == PLT_VXWORKS)
6058 /* Allocate space for the unloaded relocations. */
6059 if (!bfd_link_pic (info)
6060 && htab->elf.dynamic_sections_created)
6063 == (bfd_vma) htab->plt_initial_entry_size)
6065 htab->srelplt2->size
6066 += (sizeof (Elf32_External_Rela)
6067 * VXWORKS_PLTRESOLVE_RELOCS);
6070 htab->srelplt2->size
6071 += (sizeof (Elf32_External_Rela)
6072 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6075 /* Every PLT entry has an associated GOT entry in
6077 htab->elf.sgotplt->size += 4;
6084 ent->plt.offset = (bfd_vma) -1;
6087 ent->plt.offset = (bfd_vma) -1;
6091 h->plt.plist = NULL;
6097 h->plt.plist = NULL;
6101 eh = (struct ppc_elf_link_hash_entry *) h;
6102 if (eh->elf.got.refcount > 0
6103 || (ELIMINATE_COPY_RELOCS
6104 && !eh->elf.def_regular
6105 && eh->elf.protected_def
6106 && eh->has_addr16_ha
6107 && eh->has_addr16_lo
6108 && htab->params->pic_fixup > 0))
6113 /* Make sure this symbol is output as a dynamic symbol. */
6114 if (eh->elf.dynindx == -1
6115 && !eh->elf.forced_local
6116 && eh->elf.type != STT_GNU_IFUNC
6117 && htab->elf.dynamic_sections_created)
6119 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
6124 if ((eh->tls_mask & TLS_TLS) != 0)
6126 if ((eh->tls_mask & TLS_LD) != 0)
6128 if (!eh->elf.def_dynamic)
6129 /* We'll just use htab->tlsld_got.offset. This should
6130 always be the case. It's a little odd if we have
6131 a local dynamic reloc against a non-local symbol. */
6132 htab->tlsld_got.refcount += 1;
6136 if ((eh->tls_mask & TLS_GD) != 0)
6138 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
6140 if ((eh->tls_mask & TLS_DTPREL) != 0)
6146 eh->elf.got.offset = (bfd_vma) -1;
6149 eh->elf.got.offset = allocate_got (htab, need);
6150 dyn = htab->elf.dynamic_sections_created;
6151 if ((bfd_link_pic (info)
6152 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
6153 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
6154 || eh->elf.root.type != bfd_link_hash_undefweak))
6156 asection *rsec = htab->elf.srelgot;
6158 if (eh->elf.type == STT_GNU_IFUNC)
6159 rsec = htab->elf.irelplt;
6160 /* All the entries we allocated need relocs.
6161 Except LD only needs one. */
6162 if ((eh->tls_mask & TLS_LD) != 0
6163 && eh->elf.def_dynamic)
6165 rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
6170 eh->elf.got.offset = (bfd_vma) -1;
6172 if (eh->dyn_relocs == NULL
6173 || !htab->elf.dynamic_sections_created)
6176 /* In the shared -Bsymbolic case, discard space allocated for
6177 dynamic pc-relative relocs against symbols which turn out to be
6178 defined in regular objects. For the normal shared case, discard
6179 space for relocs that have become local due to symbol visibility
6182 if (bfd_link_pic (info))
6184 /* Relocs that use pc_count are those that appear on a call insn,
6185 or certain REL relocs (see must_be_dyn_reloc) that can be
6186 generated via assembly. We want calls to protected symbols to
6187 resolve directly to the function rather than going via the plt.
6188 If people want function pointer comparisons to work as expected
6189 then they should avoid writing weird assembly. */
6190 if (SYMBOL_CALLS_LOCAL (info, h))
6192 struct elf_dyn_relocs **pp;
6194 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6196 p->count -= p->pc_count;
6205 if (htab->is_vxworks)
6207 struct elf_dyn_relocs **pp;
6209 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6211 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
6218 /* Discard relocs on undefined symbols that must be local. */
6219 if (eh->dyn_relocs != NULL
6220 && h->root.type == bfd_link_hash_undefined
6221 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
6222 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
6223 eh->dyn_relocs = NULL;
6225 /* Also discard relocs on undefined weak syms with non-default
6227 if (eh->dyn_relocs != NULL
6228 && h->root.type == bfd_link_hash_undefweak)
6230 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
6231 eh->dyn_relocs = NULL;
6233 /* Make sure undefined weak symbols are output as a dynamic
6235 else if (h->dynindx == -1
6239 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6244 else if (ELIMINATE_COPY_RELOCS)
6246 /* For the non-shared case, discard space for relocs against
6247 symbols which turn out to need copy relocs or are not
6252 && !(h->protected_def
6253 && eh->has_addr16_ha
6254 && eh->has_addr16_lo
6255 && htab->params->pic_fixup > 0))
6257 /* Make sure this symbol is output as a dynamic symbol.
6258 Undefined weak syms won't yet be marked as dynamic. */
6259 if (h->dynindx == -1
6260 && !h->forced_local)
6262 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6266 /* If that succeeded, we know we'll be keeping all the
6268 if (h->dynindx != -1)
6272 eh->dyn_relocs = NULL;
6277 /* Finally, allocate space. */
6278 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6280 asection *sreloc = elf_section_data (p->sec)->sreloc;
6281 if (eh->elf.type == STT_GNU_IFUNC)
6282 sreloc = htab->elf.irelplt;
6283 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6289 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6290 read-only sections. */
6293 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
6295 if (h->root.type == bfd_link_hash_indirect)
6298 if (readonly_dynrelocs (h))
6300 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
6302 /* Not an error, just cut short the traversal. */
6308 static const unsigned char glink_eh_frame_cie[] =
6310 0, 0, 0, 16, /* length. */
6311 0, 0, 0, 0, /* id. */
6312 1, /* CIE version. */
6313 'z', 'R', 0, /* Augmentation string. */
6314 4, /* Code alignment. */
6315 0x7c, /* Data alignment. */
6317 1, /* Augmentation size. */
6318 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6319 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6322 /* Set the sizes of the dynamic sections. */
6325 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6326 struct bfd_link_info *info)
6328 struct ppc_elf_link_hash_table *htab;
6334 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6337 htab = ppc_elf_hash_table (info);
6338 BFD_ASSERT (htab->elf.dynobj != NULL);
6340 if (elf_hash_table (info)->dynamic_sections_created)
6342 /* Set the contents of the .interp section to the interpreter. */
6343 if (bfd_link_executable (info) && !info->nointerp)
6345 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6346 BFD_ASSERT (s != NULL);
6347 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6348 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6352 if (htab->plt_type == PLT_OLD)
6353 htab->got_header_size = 16;
6354 else if (htab->plt_type == PLT_NEW)
6355 htab->got_header_size = 12;
6357 /* Set up .got offsets for local syms, and space for local dynamic
6359 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6361 bfd_signed_vma *local_got;
6362 bfd_signed_vma *end_local_got;
6363 struct plt_entry **local_plt;
6364 struct plt_entry **end_local_plt;
6366 bfd_size_type locsymcount;
6367 Elf_Internal_Shdr *symtab_hdr;
6369 if (!is_ppc_elf (ibfd))
6372 for (s = ibfd->sections; s != NULL; s = s->next)
6374 struct ppc_dyn_relocs *p;
6376 for (p = ((struct ppc_dyn_relocs *)
6377 elf_section_data (s)->local_dynrel);
6381 if (!bfd_is_abs_section (p->sec)
6382 && bfd_is_abs_section (p->sec->output_section))
6384 /* Input section has been discarded, either because
6385 it is a copy of a linkonce section or due to
6386 linker script /DISCARD/, so we'll be discarding
6389 else if (htab->is_vxworks
6390 && strcmp (p->sec->output_section->name,
6393 /* Relocations in vxworks .tls_vars sections are
6394 handled specially by the loader. */
6396 else if (p->count != 0)
6398 asection *sreloc = elf_section_data (p->sec)->sreloc;
6400 sreloc = htab->elf.irelplt;
6401 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6402 if ((p->sec->output_section->flags
6403 & (SEC_READONLY | SEC_ALLOC))
6404 == (SEC_READONLY | SEC_ALLOC))
6405 info->flags |= DF_TEXTREL;
6410 local_got = elf_local_got_refcounts (ibfd);
6414 symtab_hdr = &elf_symtab_hdr (ibfd);
6415 locsymcount = symtab_hdr->sh_info;
6416 end_local_got = local_got + locsymcount;
6417 local_plt = (struct plt_entry **) end_local_got;
6418 end_local_plt = local_plt + locsymcount;
6419 lgot_masks = (char *) end_local_plt;
6421 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6424 unsigned int need = 0;
6425 if ((*lgot_masks & TLS_TLS) != 0)
6427 if ((*lgot_masks & TLS_GD) != 0)
6429 if ((*lgot_masks & TLS_LD) != 0)
6430 htab->tlsld_got.refcount += 1;
6431 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
6433 if ((*lgot_masks & TLS_DTPREL) != 0)
6439 *local_got = (bfd_vma) -1;
6442 *local_got = allocate_got (htab, need);
6443 if (bfd_link_pic (info))
6445 asection *srel = htab->elf.srelgot;
6446 if ((*lgot_masks & PLT_IFUNC) != 0)
6447 srel = htab->elf.irelplt;
6448 srel->size += need * (sizeof (Elf32_External_Rela) / 4);
6453 *local_got = (bfd_vma) -1;
6455 if (htab->is_vxworks)
6458 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6459 for (; local_plt < end_local_plt; ++local_plt)
6461 struct plt_entry *ent;
6462 bfd_boolean doneone = FALSE;
6463 bfd_vma plt_offset = 0, glink_offset = 0;
6465 for (ent = *local_plt; ent != NULL; ent = ent->next)
6466 if (ent->plt.refcount > 0)
6472 plt_offset = s->size;
6475 ent->plt.offset = plt_offset;
6478 if (!doneone || bfd_link_pic (info))
6480 glink_offset = s->size;
6481 s->size += GLINK_ENTRY_SIZE;
6483 ent->glink_offset = glink_offset;
6487 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6492 ent->plt.offset = (bfd_vma) -1;
6496 /* Allocate space for global sym dynamic relocs. */
6497 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6499 if (htab->tlsld_got.refcount > 0)
6501 htab->tlsld_got.offset = allocate_got (htab, 8);
6502 if (bfd_link_pic (info))
6503 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6506 htab->tlsld_got.offset = (bfd_vma) -1;
6508 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6510 unsigned int g_o_t = 32768;
6512 /* If we haven't allocated the header, do so now. When we get here,
6513 for old plt/got the got size will be 0 to 32764 (not allocated),
6514 or 32780 to 65536 (header allocated). For new plt/got, the
6515 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6516 if (htab->elf.sgot->size <= 32768)
6518 g_o_t = htab->elf.sgot->size;
6519 if (htab->plt_type == PLT_OLD)
6521 htab->elf.sgot->size += htab->got_header_size;
6524 htab->elf.hgot->root.u.def.value = g_o_t;
6526 if (bfd_link_pic (info))
6528 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6530 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6531 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6533 if (info->emitrelocations)
6535 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6537 if (sda != NULL && sda->ref_regular)
6538 sda->root.u.def.section->flags |= SEC_KEEP;
6539 sda = htab->sdata[1].sym;
6540 if (sda != NULL && sda->ref_regular)
6541 sda->root.u.def.section->flags |= SEC_KEEP;
6544 if (htab->glink != NULL
6545 && htab->glink->size != 0
6546 && htab->elf.dynamic_sections_created)
6548 htab->glink_pltresolve = htab->glink->size;
6549 /* Space for the branch table. ??? We don't need entries for
6550 non-dynamic symbols in this table. This case can arise with
6551 static ifuncs or forced local ifuncs. */
6552 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6553 /* Pad out to align the start of PLTresolve. */
6554 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6556 htab->glink->size += GLINK_PLTRESOLVE;
6558 if (htab->params->emit_stub_syms)
6560 struct elf_link_hash_entry *sh;
6561 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6562 TRUE, FALSE, FALSE);
6565 if (sh->root.type == bfd_link_hash_new)
6567 sh->root.type = bfd_link_hash_defined;
6568 sh->root.u.def.section = htab->glink;
6569 sh->root.u.def.value = htab->glink_pltresolve;
6570 sh->ref_regular = 1;
6571 sh->def_regular = 1;
6572 sh->ref_regular_nonweak = 1;
6573 sh->forced_local = 1;
6575 sh->root.linker_def = 1;
6577 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6578 TRUE, FALSE, FALSE);
6581 if (sh->root.type == bfd_link_hash_new)
6583 sh->root.type = bfd_link_hash_defined;
6584 sh->root.u.def.section = htab->glink;
6585 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6586 sh->ref_regular = 1;
6587 sh->def_regular = 1;
6588 sh->ref_regular_nonweak = 1;
6589 sh->forced_local = 1;
6591 sh->root.linker_def = 1;
6596 if (htab->glink != NULL
6597 && htab->glink->size != 0
6598 && htab->glink_eh_frame != NULL
6599 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6600 && _bfd_elf_eh_frame_present (info))
6602 s = htab->glink_eh_frame;
6603 s->size = sizeof (glink_eh_frame_cie) + 20;
6604 if (bfd_link_pic (info))
6607 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6612 /* We've now determined the sizes of the various dynamic sections.
6613 Allocate memory for them. */
6615 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6617 bfd_boolean strip_section = TRUE;
6619 if ((s->flags & SEC_LINKER_CREATED) == 0)
6622 if (s == htab->elf.splt
6623 || s == htab->elf.sgot)
6625 /* We'd like to strip these sections if they aren't needed, but if
6626 we've exported dynamic symbols from them we must leave them.
6627 It's too late to tell BFD to get rid of the symbols. */
6628 if (htab->elf.hplt != NULL)
6629 strip_section = FALSE;
6630 /* Strip this section if we don't need it; see the
6633 else if (s == htab->elf.iplt
6635 || s == htab->glink_eh_frame
6636 || s == htab->elf.sgotplt
6638 || s == htab->elf.sdynbss
6639 || s == htab->dynsbss)
6641 /* Strip these too. */
6643 else if (s == htab->sdata[0].section
6644 || s == htab->sdata[1].section)
6646 strip_section = (s->flags & SEC_KEEP) == 0;
6648 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6653 /* Remember whether there are any relocation sections. */
6656 /* We use the reloc_count field as a counter if we need
6657 to copy relocs into the output file. */
6663 /* It's not one of our sections, so don't allocate space. */
6667 if (s->size == 0 && strip_section)
6669 /* If we don't need this section, strip it from the
6670 output file. This is mostly to handle .rela.bss and
6671 .rela.plt. We must create both sections in
6672 create_dynamic_sections, because they must be created
6673 before the linker maps input sections to output
6674 sections. The linker does that before
6675 adjust_dynamic_symbol is called, and it is that
6676 function which decides whether anything needs to go
6677 into these sections. */
6678 s->flags |= SEC_EXCLUDE;
6682 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6685 /* Allocate memory for the section contents. */
6686 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6687 if (s->contents == NULL)
6691 if (htab->elf.dynamic_sections_created)
6693 /* Add some entries to the .dynamic section. We fill in the
6694 values later, in ppc_elf_finish_dynamic_sections, but we
6695 must add the entries now so that we get the correct size for
6696 the .dynamic section. The DT_DEBUG entry is filled in by the
6697 dynamic linker and used by the debugger. */
6698 #define add_dynamic_entry(TAG, VAL) \
6699 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6701 if (bfd_link_executable (info))
6703 if (!add_dynamic_entry (DT_DEBUG, 0))
6707 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6709 if (!add_dynamic_entry (DT_PLTGOT, 0)
6710 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6711 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6712 || !add_dynamic_entry (DT_JMPREL, 0))
6716 if (htab->plt_type == PLT_NEW
6717 && htab->glink != NULL
6718 && htab->glink->size != 0)
6720 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6722 if (!htab->params->no_tls_get_addr_opt
6723 && htab->tls_get_addr != NULL
6724 && htab->tls_get_addr->plt.plist != NULL
6725 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6731 if (!add_dynamic_entry (DT_RELA, 0)
6732 || !add_dynamic_entry (DT_RELASZ, 0)
6733 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6737 /* If any dynamic relocs apply to a read-only section, then we
6738 need a DT_TEXTREL entry. */
6739 if ((info->flags & DF_TEXTREL) == 0)
6740 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6743 if ((info->flags & DF_TEXTREL) != 0)
6745 if (!add_dynamic_entry (DT_TEXTREL, 0))
6748 if (htab->is_vxworks
6749 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6752 #undef add_dynamic_entry
6754 if (htab->glink_eh_frame != NULL
6755 && htab->glink_eh_frame->contents != NULL)
6757 unsigned char *p = htab->glink_eh_frame->contents;
6760 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6761 /* CIE length (rewrite in case little-endian). */
6762 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6763 p += sizeof (glink_eh_frame_cie);
6765 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6766 bfd_put_32 (htab->elf.dynobj, val, p);
6769 val = p - htab->glink_eh_frame->contents;
6770 bfd_put_32 (htab->elf.dynobj, val, p);
6772 /* Offset to .glink. Set later. */
6775 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6780 if (bfd_link_pic (info)
6781 && htab->elf.dynamic_sections_created)
6783 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6785 *p++ = DW_CFA_advance_loc + adv;
6788 *p++ = DW_CFA_advance_loc1;
6791 else if (adv < 65536)
6793 *p++ = DW_CFA_advance_loc2;
6794 bfd_put_16 (htab->elf.dynobj, adv, p);
6799 *p++ = DW_CFA_advance_loc4;
6800 bfd_put_32 (htab->elf.dynobj, adv, p);
6803 *p++ = DW_CFA_register;
6806 *p++ = DW_CFA_advance_loc + 4;
6807 *p++ = DW_CFA_restore_extended;
6810 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6811 == htab->glink_eh_frame->size);
6817 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6818 if it looks like nothing is using them. */
6821 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6823 struct elf_link_hash_entry *sda = lsect->sym;
6825 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6829 s = bfd_get_section_by_name (output_bfd, lsect->name);
6830 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6832 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6833 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6835 sda->def_regular = 0;
6836 /* This is somewhat magic. See elf_link_output_extsym. */
6837 sda->ref_dynamic = 1;
6838 sda->forced_local = 0;
6845 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6847 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6851 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6852 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6857 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6860 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6862 if (h->plt.plist != NULL
6864 && (!h->pointer_equality_needed
6865 || !h->ref_regular_nonweak))
6868 return _bfd_elf_hash_symbol (h);
6871 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6873 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6874 used for some functions that are allowed to break the ABI). */
6875 static const int shared_stub_entry[] =
6877 0x7c0802a6, /* mflr 0 */
6878 0x429f0005, /* bcl 20, 31, .Lxxx */
6879 0x7d8802a6, /* mflr 12 */
6880 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6881 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6882 0x7c0803a6, /* mtlr 0 */
6883 0x7d8903a6, /* mtctr 12 */
6884 0x4e800420, /* bctr */
6887 static const int stub_entry[] =
6889 0x3d800000, /* lis 12,xxx@ha */
6890 0x398c0000, /* addi 12,12,xxx@l */
6891 0x7d8903a6, /* mtctr 12 */
6892 0x4e800420, /* bctr */
6895 struct ppc_elf_relax_info
6897 unsigned int workaround_size;
6898 unsigned int picfixup_size;
6901 /* This function implements long branch trampolines, and the ppc476
6902 icache bug workaround. Any section needing trampolines or patch
6903 space for the workaround has its size extended so that we can
6904 add trampolines at the end of the section. */
6907 ppc_elf_relax_section (bfd *abfd,
6909 struct bfd_link_info *link_info,
6912 struct one_branch_fixup
6914 struct one_branch_fixup *next;
6916 /* Final link, can use the symbol offset. For a
6917 relocatable link we use the symbol's index. */
6922 Elf_Internal_Shdr *symtab_hdr;
6923 bfd_byte *contents = NULL;
6924 Elf_Internal_Sym *isymbuf = NULL;
6925 Elf_Internal_Rela *internal_relocs = NULL;
6926 Elf_Internal_Rela *irel, *irelend = NULL;
6927 struct one_branch_fixup *branch_fixups = NULL;
6928 struct ppc_elf_relax_info *relax_info = NULL;
6929 unsigned changes = 0;
6930 bfd_boolean workaround_change;
6931 struct ppc_elf_link_hash_table *htab;
6932 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6934 bfd_boolean maybe_pasted;
6938 /* No need to do anything with non-alloc or non-code sections. */
6939 if ((isec->flags & SEC_ALLOC) == 0
6940 || (isec->flags & SEC_CODE) == 0
6941 || (isec->flags & SEC_LINKER_CREATED) != 0
6945 /* We cannot represent the required PIC relocs in the output, so don't
6946 do anything. The linker doesn't support mixing -shared and -r
6948 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6951 htab = ppc_elf_hash_table (link_info);
6955 isec->size = (isec->size + 3) & -4;
6956 if (isec->rawsize == 0)
6957 isec->rawsize = isec->size;
6958 trampbase = isec->size;
6960 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6961 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6962 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6964 if (htab->params->ppc476_workaround
6965 || htab->params->pic_fixup > 0)
6967 if (elf_section_data (isec)->sec_info == NULL)
6969 elf_section_data (isec)->sec_info
6970 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6971 if (elf_section_data (isec)->sec_info == NULL)
6974 relax_info = elf_section_data (isec)->sec_info;
6975 trampbase -= relax_info->workaround_size;
6978 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6979 || strcmp (isec->output_section->name, ".fini") == 0);
6980 /* Space for a branch around any trampolines. */
6981 trampoff = trampbase;
6982 if (maybe_pasted && trampbase == isec->rawsize)
6985 symtab_hdr = &elf_symtab_hdr (abfd);
6987 if (htab->params->branch_trampolines
6988 || htab->params->pic_fixup > 0)
6990 /* Get a copy of the native relocations. */
6991 if (isec->reloc_count != 0)
6993 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6994 link_info->keep_memory);
6995 if (internal_relocs == NULL)
6999 got2 = bfd_get_section_by_name (abfd, ".got2");
7001 irelend = internal_relocs + isec->reloc_count;
7002 for (irel = internal_relocs; irel < irelend; irel++)
7004 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
7007 struct one_branch_fixup *f;
7008 size_t insn_offset = 0;
7009 bfd_vma max_branch_offset = 0, val;
7012 struct elf_link_hash_entry *h;
7013 struct plt_entry **plist;
7014 unsigned char sym_type;
7019 case R_PPC_LOCAL24PC:
7020 case R_PPC_PLTREL24:
7021 max_branch_offset = 1 << 25;
7025 case R_PPC_REL14_BRTAKEN:
7026 case R_PPC_REL14_BRNTAKEN:
7027 max_branch_offset = 1 << 15;
7030 case R_PPC_ADDR16_HA:
7031 if (htab->params->pic_fixup > 0)
7039 /* Get the value of the symbol referred to by the reloc. */
7041 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
7043 /* A local symbol. */
7044 Elf_Internal_Sym *isym;
7046 /* Read this BFD's local symbols. */
7047 if (isymbuf == NULL)
7049 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
7050 if (isymbuf == NULL)
7051 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
7052 symtab_hdr->sh_info, 0,
7057 isym = isymbuf + ELF32_R_SYM (irel->r_info);
7058 if (isym->st_shndx == SHN_UNDEF)
7059 tsec = bfd_und_section_ptr;
7060 else if (isym->st_shndx == SHN_ABS)
7061 tsec = bfd_abs_section_ptr;
7062 else if (isym->st_shndx == SHN_COMMON)
7063 tsec = bfd_com_section_ptr;
7065 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7067 toff = isym->st_value;
7068 sym_type = ELF_ST_TYPE (isym->st_info);
7072 /* Global symbol handling. */
7075 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
7076 h = elf_sym_hashes (abfd)[indx];
7078 while (h->root.type == bfd_link_hash_indirect
7079 || h->root.type == bfd_link_hash_warning)
7080 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7082 if (h->root.type == bfd_link_hash_defined
7083 || h->root.type == bfd_link_hash_defweak)
7085 tsec = h->root.u.def.section;
7086 toff = h->root.u.def.value;
7088 else if (h->root.type == bfd_link_hash_undefined
7089 || h->root.type == bfd_link_hash_undefweak)
7091 tsec = bfd_und_section_ptr;
7092 toff = bfd_link_relocatable (link_info) ? indx : 0;
7097 /* If this branch is to __tls_get_addr then we may later
7098 optimise away the call. We won't be needing a long-
7099 branch stub in that case. */
7100 if (bfd_link_executable (link_info)
7101 && h == htab->tls_get_addr
7102 && irel != internal_relocs)
7104 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
7105 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
7106 unsigned int tls_mask = 0;
7108 /* The previous reloc should be one of R_PPC_TLSGD or
7109 R_PPC_TLSLD, or for older object files, a reloc
7110 on the __tls_get_addr arg setup insn. Get tls
7111 mask bits from the symbol on that reloc. */
7112 if (t_symndx < symtab_hdr->sh_info)
7114 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7116 if (local_got_offsets != NULL)
7118 struct plt_entry **local_plt = (struct plt_entry **)
7119 (local_got_offsets + symtab_hdr->sh_info);
7120 char *lgot_masks = (char *)
7121 (local_plt + symtab_hdr->sh_info);
7122 tls_mask = lgot_masks[t_symndx];
7127 struct elf_link_hash_entry *th
7128 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
7130 while (th->root.type == bfd_link_hash_indirect
7131 || th->root.type == bfd_link_hash_warning)
7132 th = (struct elf_link_hash_entry *) th->root.u.i.link;
7135 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7138 /* The mask bits tell us if the call will be
7140 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7141 && (t_rtype == R_PPC_TLSGD
7142 || t_rtype == R_PPC_GOT_TLSGD16
7143 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7145 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7146 && (t_rtype == R_PPC_TLSLD
7147 || t_rtype == R_PPC_GOT_TLSLD16
7148 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7155 if (r_type == R_PPC_ADDR16_HA)
7160 && ppc_elf_hash_entry (h)->has_addr16_ha
7161 && ppc_elf_hash_entry (h)->has_addr16_lo)
7162 picfixup_size += 12;
7166 /* The condition here under which we call find_plt_ent must
7167 match that in relocate_section. If we call find_plt_ent here
7168 but not in relocate_section, or vice versa, then the branch
7169 destination used here may be incorrect. */
7173 /* We know is_branch_reloc (r_type) is true. */
7174 if (h->type == STT_GNU_IFUNC
7175 || r_type == R_PPC_PLTREL24)
7176 plist = &h->plt.plist;
7178 else if (sym_type == STT_GNU_IFUNC
7179 && elf_local_got_offsets (abfd) != NULL)
7181 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7182 struct plt_entry **local_plt = (struct plt_entry **)
7183 (local_got_offsets + symtab_hdr->sh_info);
7184 plist = local_plt + ELF32_R_SYM (irel->r_info);
7189 struct plt_entry *ent;
7191 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7192 addend = irel->r_addend;
7193 ent = find_plt_ent (plist, got2, addend);
7196 if (htab->plt_type == PLT_NEW
7198 || !htab->elf.dynamic_sections_created
7199 || h->dynindx == -1)
7202 toff = ent->glink_offset;
7206 tsec = htab->elf.splt;
7207 toff = ent->plt.offset;
7212 /* If the branch and target are in the same section, you have
7213 no hope of adding stubs. We'll error out later should the
7218 /* There probably isn't any reason to handle symbols in
7219 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7220 attribute for a code section, and we are only looking at
7221 branches. However, implement it correctly here as a
7222 reference for other target relax_section functions. */
7223 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7225 /* At this stage in linking, no SEC_MERGE symbol has been
7226 adjusted, so all references to such symbols need to be
7227 passed through _bfd_merged_section_offset. (Later, in
7228 relocate_section, all SEC_MERGE symbols *except* for
7229 section symbols have been adjusted.)
7231 gas may reduce relocations against symbols in SEC_MERGE
7232 sections to a relocation against the section symbol when
7233 the original addend was zero. When the reloc is against
7234 a section symbol we should include the addend in the
7235 offset passed to _bfd_merged_section_offset, since the
7236 location of interest is the original symbol. On the
7237 other hand, an access to "sym+addend" where "sym" is not
7238 a section symbol should not include the addend; Such an
7239 access is presumed to be an offset from "sym"; The
7240 location of interest is just "sym". */
7241 if (sym_type == STT_SECTION)
7242 toff += irel->r_addend;
7245 = _bfd_merged_section_offset (abfd, &tsec,
7246 elf_section_data (tsec)->sec_info,
7249 if (sym_type != STT_SECTION)
7250 toff += irel->r_addend;
7252 /* PLTREL24 addends are special. */
7253 else if (r_type != R_PPC_PLTREL24)
7254 toff += irel->r_addend;
7256 /* Attempted -shared link of non-pic code loses. */
7257 if ((!bfd_link_relocatable (link_info)
7258 && tsec == bfd_und_section_ptr)
7259 || tsec->output_section == NULL
7260 || (tsec->owner != NULL
7261 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7264 roff = irel->r_offset;
7266 /* If the branch is in range, no need to do anything. */
7267 if (tsec != bfd_und_section_ptr
7268 && (!bfd_link_relocatable (link_info)
7269 /* A relocatable link may have sections moved during
7270 final link, so do not presume they remain in range. */
7271 || tsec->output_section == isec->output_section))
7273 bfd_vma symaddr, reladdr;
7275 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7276 reladdr = isec->output_section->vma + isec->output_offset + roff;
7277 if (symaddr - reladdr + max_branch_offset
7278 < 2 * max_branch_offset)
7282 /* Look for an existing fixup to this address. */
7283 for (f = branch_fixups; f ; f = f->next)
7284 if (f->tsec == tsec && f->toff == toff)
7290 unsigned long stub_rtype;
7292 val = trampoff - roff;
7293 if (val >= max_branch_offset)
7294 /* Oh dear, we can't reach a trampoline. Don't try to add
7295 one. We'll report an error later. */
7298 if (bfd_link_pic (link_info))
7300 size = 4 * ARRAY_SIZE (shared_stub_entry);
7305 size = 4 * ARRAY_SIZE (stub_entry);
7308 stub_rtype = R_PPC_RELAX;
7309 if (tsec == htab->elf.splt
7310 || tsec == htab->glink)
7312 stub_rtype = R_PPC_RELAX_PLT;
7313 if (r_type == R_PPC_PLTREL24)
7314 stub_rtype = R_PPC_RELAX_PLTREL24;
7317 /* Hijack the old relocation. Since we need two
7318 relocations for this use a "composite" reloc. */
7319 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7321 irel->r_offset = trampoff + insn_offset;
7322 if (r_type == R_PPC_PLTREL24
7323 && stub_rtype != R_PPC_RELAX_PLTREL24)
7326 /* Record the fixup so we don't do it again this section. */
7327 f = bfd_malloc (sizeof (*f));
7328 f->next = branch_fixups;
7331 f->trampoff = trampoff;
7339 val = f->trampoff - roff;
7340 if (val >= max_branch_offset)
7343 /* Nop out the reloc, since we're finalizing things here. */
7344 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7347 /* Get the section contents. */
7348 if (contents == NULL)
7350 /* Get cached copy if it exists. */
7351 if (elf_section_data (isec)->this_hdr.contents != NULL)
7352 contents = elf_section_data (isec)->this_hdr.contents;
7353 /* Go get them off disk. */
7354 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7358 /* Fix up the existing branch to hit the trampoline. */
7359 hit_addr = contents + roff;
7363 case R_PPC_LOCAL24PC:
7364 case R_PPC_PLTREL24:
7365 t0 = bfd_get_32 (abfd, hit_addr);
7367 t0 |= val & 0x3fffffc;
7368 bfd_put_32 (abfd, t0, hit_addr);
7372 case R_PPC_REL14_BRTAKEN:
7373 case R_PPC_REL14_BRNTAKEN:
7374 t0 = bfd_get_32 (abfd, hit_addr);
7377 bfd_put_32 (abfd, t0, hit_addr);
7382 while (branch_fixups != NULL)
7384 struct one_branch_fixup *f = branch_fixups;
7385 branch_fixups = branch_fixups->next;
7390 workaround_change = FALSE;
7392 if (htab->params->ppc476_workaround
7393 && (!bfd_link_relocatable (link_info)
7394 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7396 bfd_vma addr, end_addr;
7397 unsigned int crossings;
7398 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7400 addr = isec->output_section->vma + isec->output_offset;
7401 end_addr = addr + trampoff;
7403 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7406 /* Keep space aligned, to ensure the patch code itself does
7407 not cross a page. Don't decrease size calculated on a
7408 previous pass as otherwise we might never settle on a layout. */
7409 newsize = 15 - ((end_addr - 1) & 15);
7410 newsize += crossings * 16;
7411 if (relax_info->workaround_size < newsize)
7413 relax_info->workaround_size = newsize;
7414 workaround_change = TRUE;
7416 /* Ensure relocate_section is called. */
7417 isec->flags |= SEC_RELOC;
7419 newsize = trampoff + relax_info->workaround_size;
7422 if (htab->params->pic_fixup > 0)
7424 picfixup_size -= relax_info->picfixup_size;
7425 if (picfixup_size != 0)
7426 relax_info->picfixup_size += picfixup_size;
7427 newsize += relax_info->picfixup_size;
7430 if (changes != 0 || picfixup_size != 0 || workaround_change)
7431 isec->size = newsize;
7434 && symtab_hdr->contents != (unsigned char *) isymbuf)
7436 if (! link_info->keep_memory)
7440 /* Cache the symbols for elf_link_input_bfd. */
7441 symtab_hdr->contents = (unsigned char *) isymbuf;
7445 if (contents != NULL
7446 && elf_section_data (isec)->this_hdr.contents != contents)
7448 if (!changes && !link_info->keep_memory)
7452 /* Cache the section contents for elf_link_input_bfd. */
7453 elf_section_data (isec)->this_hdr.contents = contents;
7457 changes += picfixup_size;
7460 /* Append sufficient NOP relocs so we can write out relocation
7461 information for the trampolines. */
7462 Elf_Internal_Shdr *rel_hdr;
7463 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7464 * sizeof (*new_relocs));
7469 memcpy (new_relocs, internal_relocs,
7470 isec->reloc_count * sizeof (*new_relocs));
7471 for (ix = changes; ix--;)
7473 irel = new_relocs + ix + isec->reloc_count;
7475 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7477 if (internal_relocs != elf_section_data (isec)->relocs)
7478 free (internal_relocs);
7479 elf_section_data (isec)->relocs = new_relocs;
7480 isec->reloc_count += changes;
7481 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7482 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7484 else if (internal_relocs != NULL
7485 && elf_section_data (isec)->relocs != internal_relocs)
7486 free (internal_relocs);
7488 *again = changes != 0 || workaround_change;
7492 while (branch_fixups != NULL)
7494 struct one_branch_fixup *f = branch_fixups;
7495 branch_fixups = branch_fixups->next;
7498 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7500 if (contents != NULL
7501 && elf_section_data (isec)->this_hdr.contents != contents)
7503 if (internal_relocs != NULL
7504 && elf_section_data (isec)->relocs != internal_relocs)
7505 free (internal_relocs);
7509 /* What to do when ld finds relocations against symbols defined in
7510 discarded sections. */
7513 ppc_elf_action_discarded (asection *sec)
7515 if (strcmp (".fixup", sec->name) == 0)
7518 if (strcmp (".got2", sec->name) == 0)
7521 return _bfd_elf_default_action_discarded (sec);
7524 /* Fill in the address for a pointer generated in a linker section. */
7527 elf_finish_pointer_linker_section (bfd *input_bfd,
7528 elf_linker_section_t *lsect,
7529 struct elf_link_hash_entry *h,
7531 const Elf_Internal_Rela *rel)
7533 elf_linker_section_pointers_t *linker_section_ptr;
7535 BFD_ASSERT (lsect != NULL);
7539 /* Handle global symbol. */
7540 struct ppc_elf_link_hash_entry *eh;
7542 eh = (struct ppc_elf_link_hash_entry *) h;
7543 BFD_ASSERT (eh->elf.def_regular);
7544 linker_section_ptr = eh->linker_section_pointer;
7548 /* Handle local symbol. */
7549 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7551 BFD_ASSERT (is_ppc_elf (input_bfd));
7552 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7553 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7556 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7559 BFD_ASSERT (linker_section_ptr != NULL);
7561 /* Offset will always be a multiple of four, so use the bottom bit
7562 as a "written" flag. */
7563 if ((linker_section_ptr->offset & 1) == 0)
7565 bfd_put_32 (lsect->section->owner,
7566 relocation + linker_section_ptr->addend,
7567 lsect->section->contents + linker_section_ptr->offset);
7568 linker_section_ptr->offset += 1;
7571 relocation = (lsect->section->output_section->vma
7572 + lsect->section->output_offset
7573 + linker_section_ptr->offset - 1
7574 - SYM_VAL (lsect->sym));
7578 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7579 lsect->name, (long) relocation, (long) relocation);
7585 #define PPC_LO(v) ((v) & 0xffff)
7586 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7587 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7590 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7591 struct bfd_link_info *info)
7593 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7594 bfd *output_bfd = info->output_bfd;
7597 plt = ((ent->plt.offset & ~1)
7598 + plt_sec->output_section->vma
7599 + plt_sec->output_offset);
7601 if (bfd_link_pic (info))
7605 if (ent->addend >= 32768)
7607 + ent->sec->output_section->vma
7608 + ent->sec->output_offset);
7609 else if (htab->elf.hgot != NULL)
7610 got = SYM_VAL (htab->elf.hgot);
7614 if (plt + 0x8000 < 0x10000)
7616 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7618 bfd_put_32 (output_bfd, MTCTR_11, p);
7620 bfd_put_32 (output_bfd, BCTR, p);
7622 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7627 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7629 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7631 bfd_put_32 (output_bfd, MTCTR_11, p);
7633 bfd_put_32 (output_bfd, BCTR, p);
7639 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7641 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7643 bfd_put_32 (output_bfd, MTCTR_11, p);
7645 bfd_put_32 (output_bfd, BCTR, p);
7650 /* Return true if symbol is defined statically. */
7653 is_static_defined (struct elf_link_hash_entry *h)
7655 return ((h->root.type == bfd_link_hash_defined
7656 || h->root.type == bfd_link_hash_defweak)
7657 && h->root.u.def.section != NULL
7658 && h->root.u.def.section->output_section != NULL);
7661 /* If INSN is an opcode that may be used with an @tls operand, return
7662 the transformed insn for TLS optimisation, otherwise return 0. If
7663 REG is non-zero only match an insn with RB or RA equal to REG. */
7666 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7670 if ((insn & (0x3f << 26)) != 31 << 26)
7673 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7674 rtra = insn & ((1 << 26) - (1 << 16));
7675 else if (((insn >> 16) & 0x1f) == reg)
7676 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7680 if ((insn & (0x3ff << 1)) == 266 << 1)
7683 else if ((insn & (0x1f << 1)) == 23 << 1
7684 && ((insn & (0x1f << 6)) < 14 << 6
7685 || ((insn & (0x1f << 6)) >= 16 << 6
7686 && (insn & (0x1f << 6)) < 24 << 6)))
7687 /* load and store indexed -> dform. */
7688 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7689 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7690 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7691 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7692 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7694 insn = (58 << 26) | 2;
7701 /* If INSN is an opcode that may be used with an @tprel operand, return
7702 the transformed insn for an undefined weak symbol, ie. with the
7703 thread pointer REG operand removed. Otherwise return 0. */
7706 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7708 if ((insn & (0x1f << 16)) == reg << 16
7709 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7710 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7711 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7712 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7713 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7714 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7715 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7716 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7717 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7718 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7719 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7720 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7721 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7722 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7723 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7724 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7726 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7727 && ((insn & 3) == 0 || (insn & 3) == 3))))
7729 insn &= ~(0x1f << 16);
7731 else if ((insn & (0x1f << 21)) == reg << 21
7732 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7733 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7734 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7736 insn &= ~(0x1f << 21);
7737 insn |= (insn & (0x1f << 16)) << 5;
7738 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7739 insn -= 2 >> 26; /* convert to ori,oris */
7747 is_insn_ds_form (unsigned int insn)
7749 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7750 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7751 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7752 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7756 is_insn_dq_form (unsigned int insn)
7758 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7759 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7760 && (insn & 3) == 1));
7763 /* The RELOCATE_SECTION function is called by the ELF backend linker
7764 to handle the relocations for a section.
7766 The relocs are always passed as Rela structures; if the section
7767 actually uses Rel structures, the r_addend field will always be
7770 This function is responsible for adjust the section contents as
7771 necessary, and (if using Rela relocs and generating a
7772 relocatable output file) adjusting the reloc addend as
7775 This function does not have to worry about setting the reloc
7776 address or the reloc symbol index.
7778 LOCAL_SYMS is a pointer to the swapped in local symbols.
7780 LOCAL_SECTIONS is an array giving the section in the input file
7781 corresponding to the st_shndx field of each local symbol.
7783 The global hash table entry for the global symbols can be found
7784 via elf_sym_hashes (input_bfd).
7786 When generating relocatable output, this function must handle
7787 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7788 going to be the section symbol corresponding to the output
7789 section, which means that the addend must be adjusted
7793 ppc_elf_relocate_section (bfd *output_bfd,
7794 struct bfd_link_info *info,
7796 asection *input_section,
7798 Elf_Internal_Rela *relocs,
7799 Elf_Internal_Sym *local_syms,
7800 asection **local_sections)
7802 Elf_Internal_Shdr *symtab_hdr;
7803 struct elf_link_hash_entry **sym_hashes;
7804 struct ppc_elf_link_hash_table *htab;
7805 Elf_Internal_Rela *rel;
7806 Elf_Internal_Rela *wrel;
7807 Elf_Internal_Rela *relend;
7808 Elf_Internal_Rela outrel;
7810 bfd_vma *local_got_offsets;
7811 bfd_boolean ret = TRUE;
7812 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7813 bfd_boolean is_vxworks_tls;
7814 unsigned int picfixup_size = 0;
7815 struct ppc_elf_relax_info *relax_info = NULL;
7818 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7819 "%ld relocations%s",
7820 input_bfd, input_section,
7821 (long) input_section->reloc_count,
7822 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7825 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7827 /* Initialize howto table if not already done. */
7828 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7829 ppc_elf_howto_init ();
7831 htab = ppc_elf_hash_table (info);
7832 local_got_offsets = elf_local_got_offsets (input_bfd);
7833 symtab_hdr = &elf_symtab_hdr (input_bfd);
7834 sym_hashes = elf_sym_hashes (input_bfd);
7835 /* We have to handle relocations in vxworks .tls_vars sections
7836 specially, because the dynamic loader is 'weird'. */
7837 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7838 && !strcmp (input_section->output_section->name,
7840 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7841 relax_info = elf_section_data (input_section)->sec_info;
7842 rel = wrel = relocs;
7843 relend = relocs + input_section->reloc_count;
7844 for (; rel < relend; wrel++, rel++)
7846 enum elf_ppc_reloc_type r_type;
7848 bfd_reloc_status_type r;
7849 Elf_Internal_Sym *sym;
7851 struct elf_link_hash_entry *h;
7852 const char *sym_name;
7853 reloc_howto_type *howto;
7854 unsigned long r_symndx;
7856 bfd_vma branch_bit, from;
7857 bfd_boolean unresolved_reloc;
7859 unsigned int tls_type, tls_mask, tls_gd;
7860 struct plt_entry **ifunc;
7861 struct reloc_howto_struct alt_howto;
7864 r_type = ELF32_R_TYPE (rel->r_info);
7868 unresolved_reloc = FALSE;
7870 r_symndx = ELF32_R_SYM (rel->r_info);
7872 if (r_symndx < symtab_hdr->sh_info)
7874 sym = local_syms + r_symndx;
7875 sec = local_sections[r_symndx];
7876 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7878 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7882 bfd_boolean ignored;
7884 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7885 r_symndx, symtab_hdr, sym_hashes,
7887 unresolved_reloc, warned, ignored);
7889 sym_name = h->root.root.string;
7892 if (sec != NULL && discarded_section (sec))
7894 /* For relocs against symbols from removed linkonce sections,
7895 or sections discarded by a linker script, we just want the
7896 section contents zeroed. Avoid any special processing. */
7898 if (r_type < R_PPC_max)
7899 howto = ppc_elf_howto_table[r_type];
7901 _bfd_clear_contents (howto, input_bfd, input_section,
7902 contents + rel->r_offset);
7903 wrel->r_offset = rel->r_offset;
7907 /* For ld -r, remove relocations in debug sections against
7908 sections defined in discarded sections. Not done for
7909 non-debug to preserve relocs in .eh_frame which the
7910 eh_frame editing code expects to be present. */
7911 if (bfd_link_relocatable (info)
7912 && (input_section->flags & SEC_DEBUGGING))
7918 if (bfd_link_relocatable (info))
7921 && r_type == R_PPC_PLTREL24
7922 && rel->r_addend != 0)
7924 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7925 addend specifies the GOT pointer offset within .got2. */
7926 rel->r_addend += got2->output_offset;
7928 if (r_type != R_PPC_RELAX_PLT
7929 && r_type != R_PPC_RELAX_PLTREL24
7930 && r_type != R_PPC_RELAX)
7934 /* TLS optimizations. Replace instruction sequences and relocs
7935 based on information we collected in tls_optimize. We edit
7936 RELOCS so that --emit-relocs will output something sensible
7937 for the final instruction stream. */
7941 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7942 else if (local_got_offsets != NULL)
7944 struct plt_entry **local_plt;
7947 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7948 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7949 tls_mask = lgot_masks[r_symndx];
7952 /* Ensure reloc mapping code below stays sane. */
7953 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7954 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7955 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7956 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7957 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7958 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7959 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7960 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7967 case R_PPC_GOT_TPREL16:
7968 case R_PPC_GOT_TPREL16_LO:
7969 if ((tls_mask & TLS_TLS) != 0
7970 && (tls_mask & TLS_TPREL) == 0)
7974 insn = bfd_get_32 (input_bfd,
7975 contents + rel->r_offset - d_offset);
7977 insn |= 0x3c020000; /* addis 0,2,0 */
7978 bfd_put_32 (input_bfd, insn,
7979 contents + rel->r_offset - d_offset);
7980 r_type = R_PPC_TPREL16_HA;
7981 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7986 if ((tls_mask & TLS_TLS) != 0
7987 && (tls_mask & TLS_TPREL) == 0)
7991 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7992 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7995 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7996 r_type = R_PPC_TPREL16_LO;
7997 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7999 /* Was PPC_TLS which sits on insn boundary, now
8000 PPC_TPREL16_LO which is at low-order half-word. */
8001 rel->r_offset += d_offset;
8005 case R_PPC_GOT_TLSGD16_HI:
8006 case R_PPC_GOT_TLSGD16_HA:
8007 tls_gd = TLS_TPRELGD;
8008 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8012 case R_PPC_GOT_TLSLD16_HI:
8013 case R_PPC_GOT_TLSLD16_HA:
8014 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8017 if ((tls_mask & tls_gd) != 0)
8018 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8019 + R_PPC_GOT_TPREL16);
8022 rel->r_offset -= d_offset;
8023 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
8024 r_type = R_PPC_NONE;
8026 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8030 case R_PPC_GOT_TLSGD16:
8031 case R_PPC_GOT_TLSGD16_LO:
8032 tls_gd = TLS_TPRELGD;
8033 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8037 case R_PPC_GOT_TLSLD16:
8038 case R_PPC_GOT_TLSLD16_LO:
8039 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8041 unsigned int insn1, insn2;
8045 offset = (bfd_vma) -1;
8046 /* If not using the newer R_PPC_TLSGD/LD to mark
8047 __tls_get_addr calls, we must trust that the call
8048 stays with its arg setup insns, ie. that the next
8049 reloc is the __tls_get_addr call associated with
8050 the current reloc. Edit both insns. */
8051 if (input_section->has_tls_get_addr_call
8053 && branch_reloc_hash_match (input_bfd, rel + 1,
8054 htab->tls_get_addr))
8055 offset = rel[1].r_offset;
8056 /* We read the low GOT_TLS insn because we need to keep
8057 the destination reg. It may be something other than
8058 the usual r3, and moved to r3 before the call by
8059 intervening code. */
8060 insn1 = bfd_get_32 (input_bfd,
8061 contents + rel->r_offset - d_offset);
8062 if ((tls_mask & tls_gd) != 0)
8065 insn1 &= (0x1f << 21) | (0x1f << 16);
8066 insn1 |= 32 << 26; /* lwz */
8067 if (offset != (bfd_vma) -1)
8069 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8070 insn2 = 0x7c631214; /* add 3,3,2 */
8071 bfd_put_32 (input_bfd, insn2, contents + offset);
8073 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
8074 + R_PPC_GOT_TPREL16);
8075 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8080 insn1 &= 0x1f << 21;
8081 insn1 |= 0x3c020000; /* addis r,2,0 */
8084 /* Was an LD reloc. */
8086 r_symndx < symtab_hdr->sh_info;
8088 if (local_sections[r_symndx] == sec)
8090 if (r_symndx >= symtab_hdr->sh_info)
8091 r_symndx = STN_UNDEF;
8092 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8093 if (r_symndx != STN_UNDEF)
8094 rel->r_addend -= (local_syms[r_symndx].st_value
8095 + sec->output_offset
8096 + sec->output_section->vma);
8098 r_type = R_PPC_TPREL16_HA;
8099 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8100 if (offset != (bfd_vma) -1)
8102 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8103 rel[1].r_offset = offset + d_offset;
8104 rel[1].r_addend = rel->r_addend;
8105 insn2 = 0x38630000; /* addi 3,3,0 */
8106 bfd_put_32 (input_bfd, insn2, contents + offset);
8109 bfd_put_32 (input_bfd, insn1,
8110 contents + rel->r_offset - d_offset);
8113 /* We changed the symbol on an LD reloc. Start over
8114 in order to get h, sym, sec etc. right. */
8121 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
8124 bfd_vma offset = rel->r_offset;
8126 if ((tls_mask & TLS_TPRELGD) != 0)
8129 r_type = R_PPC_NONE;
8130 insn2 = 0x7c631214; /* add 3,3,2 */
8135 r_type = R_PPC_TPREL16_LO;
8136 rel->r_offset += d_offset;
8137 insn2 = 0x38630000; /* addi 3,3,0 */
8139 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8140 bfd_put_32 (input_bfd, insn2, contents + offset);
8141 /* Zap the reloc on the _tls_get_addr call too. */
8142 BFD_ASSERT (offset == rel[1].r_offset);
8143 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8148 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8153 r_symndx < symtab_hdr->sh_info;
8155 if (local_sections[r_symndx] == sec)
8157 if (r_symndx >= symtab_hdr->sh_info)
8158 r_symndx = STN_UNDEF;
8159 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8160 if (r_symndx != STN_UNDEF)
8161 rel->r_addend -= (local_syms[r_symndx].st_value
8162 + sec->output_offset
8163 + sec->output_section->vma);
8165 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8166 rel->r_offset += d_offset;
8167 insn2 = 0x38630000; /* addi 3,3,0 */
8168 bfd_put_32 (input_bfd, insn2,
8169 contents + rel->r_offset - d_offset);
8170 /* Zap the reloc on the _tls_get_addr call too. */
8171 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8172 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8178 /* Handle other relocations that tweak non-addend part of insn. */
8185 /* Branch taken prediction relocations. */
8186 case R_PPC_ADDR14_BRTAKEN:
8187 case R_PPC_REL14_BRTAKEN:
8188 branch_bit = BRANCH_PREDICT_BIT;
8191 /* Branch not taken prediction relocations. */
8192 case R_PPC_ADDR14_BRNTAKEN:
8193 case R_PPC_REL14_BRNTAKEN:
8197 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8198 insn &= ~BRANCH_PREDICT_BIT;
8201 from = (rel->r_offset
8202 + input_section->output_offset
8203 + input_section->output_section->vma);
8205 /* Invert 'y' bit if not the default. */
8206 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8207 insn ^= BRANCH_PREDICT_BIT;
8209 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8214 if (ELIMINATE_COPY_RELOCS
8218 && ppc_elf_hash_entry (h)->has_addr16_ha
8219 && ppc_elf_hash_entry (h)->has_addr16_lo
8220 && htab->params->pic_fixup > 0)
8222 /* Convert lis;addi or lis;load/store accessing a protected
8223 variable defined in a shared library to PIC. */
8226 if (r_type == R_PPC_ADDR16_HA)
8228 insn = bfd_get_32 (input_bfd,
8229 contents + rel->r_offset - d_offset);
8230 if ((insn & (0x3f << 26)) == (15u << 26)
8231 && (insn & (0x1f << 16)) == 0 /* lis */)
8237 p = (contents + input_section->size
8238 - relax_info->workaround_size
8239 - relax_info->picfixup_size
8241 off = (p - contents) - (rel->r_offset - d_offset);
8242 if (off > 0x1fffffc || (off & 3) != 0)
8243 info->callbacks->einfo
8244 (_("%P: %H: fixup branch overflow\n"),
8245 input_bfd, input_section, rel->r_offset);
8247 bfd_put_32 (input_bfd, B | off,
8248 contents + rel->r_offset - d_offset);
8249 got_addr = (htab->elf.sgot->output_section->vma
8250 + htab->elf.sgot->output_offset
8251 + (h->got.offset & ~1));
8252 wrel->r_offset = (p - contents) + d_offset;
8253 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8254 wrel->r_addend = got_addr;
8256 insn |= ((unsigned int )(got_addr + 0x8000) >> 16) & 0xffff;
8257 bfd_put_32 (input_bfd, insn, p);
8259 /* Convert lis to lwz, loading address from GOT. */
8261 insn ^= (32u ^ 15u) << 26;
8262 insn |= (insn & (0x1f << 21)) >> 5;
8263 insn |= got_addr & 0xffff;
8264 bfd_put_32 (input_bfd, insn, p + 4);
8266 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8267 picfixup_size += 12;
8269 /* Use one of the spare relocs, so --emit-relocs
8270 output is reasonable. */
8271 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8273 rel->r_offset = wrel[-1].r_offset + 4;
8274 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8275 rel->r_addend = wrel[-1].r_addend;
8277 /* Continue on as if we had a got reloc, to output
8279 r_type = R_PPC_GOT16_LO;
8282 info->callbacks->einfo
8283 /* xgettext:c-format */
8284 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8285 input_bfd, input_section, rel->r_offset,
8286 "R_PPC_ADDR16_HA", insn);
8288 else if (r_type == R_PPC_ADDR16_LO)
8290 insn = bfd_get_32 (input_bfd,
8291 contents + rel->r_offset - d_offset);
8292 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8293 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8294 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8295 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8296 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8297 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8298 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8299 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8300 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8301 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8302 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8303 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8304 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8305 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8306 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8308 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8309 && ((insn & 3) == 0 || (insn & 3) == 3)))
8311 /* Arrange to apply the reloc addend, if any. */
8313 unresolved_reloc = FALSE;
8314 rel->r_info = ELF32_R_INFO (0, r_type);
8317 info->callbacks->einfo
8318 /* xgettext:c-format */
8319 (_("%P: %H: error: %s with unexpected instruction %x\n"),
8320 input_bfd, input_section, rel->r_offset,
8321 "R_PPC_ADDR16_LO", insn);
8326 if (!htab->is_vxworks)
8328 struct plt_entry *ent;
8332 if (h->type == STT_GNU_IFUNC)
8333 ifunc = &h->plt.plist;
8335 else if (local_got_offsets != NULL
8336 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8338 struct plt_entry **local_plt;
8340 local_plt = (struct plt_entry **) (local_got_offsets
8341 + symtab_hdr->sh_info);
8342 ifunc = local_plt + r_symndx;
8347 && (!bfd_link_pic (info)
8348 || is_branch_reloc (r_type)))
8351 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8352 addend = rel->r_addend;
8353 ent = find_plt_ent (ifunc, got2, addend);
8357 if (bfd_link_pic (info)
8359 && htab->plt_type != PLT_NEW
8360 && (!htab->elf.dynamic_sections_created
8362 || h->dynindx == -1))
8364 /* Uh oh, we are going to create a pic glink stub
8365 for an ifunc (here for h == NULL and later in
8366 finish_dynamic_symbol for h != NULL), and
8367 apparently are using code compiled with
8368 -mbss-plt. The difficulty is that -mbss-plt code
8369 gives no indication via a magic PLTREL24 addend
8370 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8371 is pointing into a .got2 section (and how far
8373 info->callbacks->einfo
8374 /* xgettext:c-format */
8375 (_("%X%P: %H: unsupported bss-plt -fPIC ifunc %s\n"),
8376 input_bfd, input_section, rel->r_offset, sym_name);
8378 if (h == NULL && (ent->plt.offset & 1) == 0)
8380 Elf_Internal_Rela rela;
8383 rela.r_offset = (htab->elf.iplt->output_section->vma
8384 + htab->elf.iplt->output_offset
8386 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8387 rela.r_addend = relocation;
8388 loc = htab->elf.irelplt->contents;
8389 loc += (htab->elf.irelplt->reloc_count++
8390 * sizeof (Elf32_External_Rela));
8391 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8393 ent->plt.offset |= 1;
8395 if (h == NULL && (ent->glink_offset & 1) == 0)
8397 unsigned char *p = ((unsigned char *) htab->glink->contents
8398 + ent->glink_offset);
8399 write_glink_stub (ent, htab->elf.iplt, p, info);
8400 ent->glink_offset |= 1;
8403 unresolved_reloc = FALSE;
8404 if (htab->plt_type == PLT_NEW
8405 || !htab->elf.dynamic_sections_created
8407 || h->dynindx == -1)
8408 relocation = (htab->glink->output_section->vma
8409 + htab->glink->output_offset
8410 + (ent->glink_offset & ~1));
8412 relocation = (htab->elf.splt->output_section->vma
8413 + htab->elf.splt->output_offset
8418 addend = rel->r_addend;
8421 if (r_type < R_PPC_max)
8422 howto = ppc_elf_howto_table[r_type];
8426 info->callbacks->einfo
8427 /* xgettext:c-format */
8428 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8429 input_bfd, (int) r_type, sym_name);
8431 bfd_set_error (bfd_error_bad_value);
8439 case R_PPC_EMB_MRKREF:
8440 case R_PPC_GNU_VTINHERIT:
8441 case R_PPC_GNU_VTENTRY:
8444 /* GOT16 relocations. Like an ADDR16 using the symbol's
8445 address in the GOT as relocation value instead of the
8446 symbol's value itself. Also, create a GOT entry for the
8447 symbol and put the symbol value there. */
8448 case R_PPC_GOT_TLSGD16:
8449 case R_PPC_GOT_TLSGD16_LO:
8450 case R_PPC_GOT_TLSGD16_HI:
8451 case R_PPC_GOT_TLSGD16_HA:
8452 tls_type = TLS_TLS | TLS_GD;
8455 case R_PPC_GOT_TLSLD16:
8456 case R_PPC_GOT_TLSLD16_LO:
8457 case R_PPC_GOT_TLSLD16_HI:
8458 case R_PPC_GOT_TLSLD16_HA:
8459 tls_type = TLS_TLS | TLS_LD;
8462 case R_PPC_GOT_TPREL16:
8463 case R_PPC_GOT_TPREL16_LO:
8464 case R_PPC_GOT_TPREL16_HI:
8465 case R_PPC_GOT_TPREL16_HA:
8466 tls_type = TLS_TLS | TLS_TPREL;
8469 case R_PPC_GOT_DTPREL16:
8470 case R_PPC_GOT_DTPREL16_LO:
8471 case R_PPC_GOT_DTPREL16_HI:
8472 case R_PPC_GOT_DTPREL16_HA:
8473 tls_type = TLS_TLS | TLS_DTPREL;
8477 case R_PPC_GOT16_LO:
8478 case R_PPC_GOT16_HI:
8479 case R_PPC_GOT16_HA:
8483 /* Relocation is to the entry for this symbol in the global
8489 if (htab->elf.sgot == NULL)
8493 if (tls_type == (TLS_TLS | TLS_LD)
8495 || !h->def_dynamic))
8496 offp = &htab->tlsld_got.offset;
8500 dyn = htab->elf.dynamic_sections_created;
8501 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
8502 || (bfd_link_pic (info)
8503 && SYMBOL_REFERENCES_LOCAL (info, h)))
8504 /* This is actually a static link, or it is a
8505 -Bsymbolic link and the symbol is defined
8506 locally, or the symbol was forced to be local
8507 because of a version file. */
8511 BFD_ASSERT (h->dynindx != -1);
8513 unresolved_reloc = FALSE;
8515 offp = &h->got.offset;
8519 if (local_got_offsets == NULL)
8521 offp = &local_got_offsets[r_symndx];
8524 /* The offset must always be a multiple of 4. We use the
8525 least significant bit to record whether we have already
8526 processed this entry. */
8532 unsigned int tls_m = (tls_mask
8533 & (TLS_LD | TLS_GD | TLS_DTPREL
8534 | TLS_TPREL | TLS_TPRELGD));
8536 if (offp == &htab->tlsld_got.offset)
8542 /* We might have multiple got entries for this sym.
8543 Initialize them all. */
8548 if ((tls_m & TLS_LD) != 0)
8550 tls_ty = TLS_TLS | TLS_LD;
8553 else if ((tls_m & TLS_GD) != 0)
8555 tls_ty = TLS_TLS | TLS_GD;
8558 else if ((tls_m & TLS_DTPREL) != 0)
8560 tls_ty = TLS_TLS | TLS_DTPREL;
8561 tls_m &= ~TLS_DTPREL;
8563 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8565 tls_ty = TLS_TLS | TLS_TPREL;
8569 /* Generate relocs for the dynamic linker. */
8570 if ((bfd_link_pic (info) || indx != 0)
8571 && (offp == &htab->tlsld_got.offset
8573 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8574 || h->root.type != bfd_link_hash_undefweak))
8576 asection *rsec = htab->elf.srelgot;
8580 rsec = htab->elf.irelplt;
8581 outrel.r_offset = (htab->elf.sgot->output_section->vma
8582 + htab->elf.sgot->output_offset
8584 outrel.r_addend = 0;
8585 if (tls_ty & (TLS_LD | TLS_GD))
8587 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8588 if (tls_ty == (TLS_TLS | TLS_GD))
8590 loc = rsec->contents;
8591 loc += (rsec->reloc_count++
8592 * sizeof (Elf32_External_Rela));
8593 bfd_elf32_swap_reloca_out (output_bfd,
8595 outrel.r_offset += 4;
8597 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8600 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8601 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8602 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8603 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8605 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8606 else if (ifunc != NULL)
8607 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8609 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8610 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8612 outrel.r_addend += relocation;
8613 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8615 if (htab->elf.tls_sec == NULL)
8616 outrel.r_addend = 0;
8618 outrel.r_addend -= htab->elf.tls_sec->vma;
8621 loc = rsec->contents;
8622 loc += (rsec->reloc_count++
8623 * sizeof (Elf32_External_Rela));
8624 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8627 /* Init the .got section contents if we're not
8628 emitting a reloc. */
8631 bfd_vma value = relocation;
8633 if (tls_ty == (TLS_TLS | TLS_LD))
8635 else if (tls_ty != 0)
8637 if (htab->elf.tls_sec == NULL)
8641 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8642 if (tls_ty == (TLS_TLS | TLS_TPREL))
8643 value += DTP_OFFSET - TP_OFFSET;
8646 if (tls_ty == (TLS_TLS | TLS_GD))
8648 bfd_put_32 (input_bfd, value,
8649 htab->elf.sgot->contents + off + 4);
8653 bfd_put_32 (input_bfd, value,
8654 htab->elf.sgot->contents + off);
8658 if (tls_ty & (TLS_LD | TLS_GD))
8667 if (off >= (bfd_vma) -2)
8670 if ((tls_type & TLS_TLS) != 0)
8672 if (tls_type != (TLS_TLS | TLS_LD))
8674 if ((tls_mask & TLS_LD) != 0
8676 || !h->def_dynamic))
8678 if (tls_type != (TLS_TLS | TLS_GD))
8680 if ((tls_mask & TLS_GD) != 0)
8682 if (tls_type != (TLS_TLS | TLS_DTPREL))
8684 if ((tls_mask & TLS_DTPREL) != 0)
8691 /* If here for a picfixup, we're done. */
8692 if (r_type != ELF32_R_TYPE (rel->r_info))
8695 relocation = (htab->elf.sgot->output_section->vma
8696 + htab->elf.sgot->output_offset
8698 - SYM_VAL (htab->elf.hgot));
8700 /* Addends on got relocations don't make much sense.
8701 x+off@got is actually x@got+off, and since the got is
8702 generated by a hash table traversal, the value in the
8703 got at entry m+n bears little relation to the entry m. */
8705 info->callbacks->einfo
8706 /* xgettext:c-format */
8707 (_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
8708 input_bfd, input_section, rel->r_offset,
8714 /* Relocations that need no special processing. */
8715 case R_PPC_LOCAL24PC:
8716 /* It makes no sense to point a local relocation
8717 at a symbol not in this object. */
8718 if (unresolved_reloc)
8720 (*info->callbacks->undefined_symbol) (info,
8721 h->root.root.string,
8728 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8730 /* @local on an ifunc does not really make sense since
8731 the ifunc resolver can take you anywhere. More
8732 seriously, calls to ifuncs must go through a plt call
8733 stub, and for pic the plt call stubs uses r30 to
8734 access the PLT. The problem is that a call that is
8735 local won't have the +32k reloc addend trick marking
8736 -fPIC code, so the linker won't know whether r30 is
8737 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8738 /* xgettext:c-format */
8739 info->callbacks->einfo (_("%X%P: %H: @local call to ifunc %s\n"),
8740 input_bfd, input_section, rel->r_offset,
8741 h->root.root.string);
8745 case R_PPC_DTPREL16:
8746 case R_PPC_DTPREL16_LO:
8747 case R_PPC_DTPREL16_HI:
8748 case R_PPC_DTPREL16_HA:
8749 if (htab->elf.tls_sec != NULL)
8750 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8753 /* Relocations that may need to be propagated if this is a shared
8756 case R_PPC_TPREL16_LO:
8757 case R_PPC_TPREL16_HI:
8758 case R_PPC_TPREL16_HA:
8760 && h->root.type == bfd_link_hash_undefweak
8761 && h->dynindx == -1)
8763 /* Make this relocation against an undefined weak symbol
8764 resolve to zero. This is really just a tweak, since
8765 code using weak externs ought to check that they are
8766 defined before using them. */
8767 bfd_byte *p = contents + rel->r_offset - d_offset;
8768 unsigned int insn = bfd_get_32 (input_bfd, p);
8769 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8771 bfd_put_32 (input_bfd, insn, p);
8774 if (htab->elf.tls_sec != NULL)
8775 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8776 /* The TPREL16 relocs shouldn't really be used in shared
8777 libs as they will result in DT_TEXTREL being set, but
8778 support them anyway. */
8782 if (htab->elf.tls_sec != NULL)
8783 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8786 case R_PPC_DTPREL32:
8787 if (htab->elf.tls_sec != NULL)
8788 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8791 case R_PPC_DTPMOD32:
8797 case R_PPC_REL16_LO:
8798 case R_PPC_REL16_HI:
8799 case R_PPC_REL16_HA:
8800 case R_PPC_REL16DX_HA:
8804 if (h == NULL || h == htab->elf.hgot)
8810 case R_PPC_ADDR16_LO:
8811 case R_PPC_ADDR16_HI:
8812 case R_PPC_ADDR16_HA:
8817 case R_PPC_VLE_REL8:
8818 case R_PPC_VLE_REL15:
8819 case R_PPC_VLE_REL24:
8822 case R_PPC_REL14_BRTAKEN:
8823 case R_PPC_REL14_BRNTAKEN:
8824 /* If these relocations are not to a named symbol, they can be
8825 handled right here, no need to bother the dynamic linker. */
8826 if (SYMBOL_CALLS_LOCAL (info, h)
8827 || h == htab->elf.hgot)
8833 case R_PPC_ADDR14_BRTAKEN:
8834 case R_PPC_ADDR14_BRNTAKEN:
8835 if (h != NULL && !bfd_link_pic (info))
8840 if ((input_section->flags & SEC_ALLOC) == 0
8844 if ((bfd_link_pic (info)
8846 && ((h->root.type == bfd_link_hash_undefined
8847 && (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
8848 || ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
8849 || (h->root.type == bfd_link_hash_undefweak
8850 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
8851 && (must_be_dyn_reloc (info, r_type)
8852 || !SYMBOL_CALLS_LOCAL (info, h)))
8853 || (ELIMINATE_COPY_RELOCS
8854 && !bfd_link_pic (info)
8859 && !(h->protected_def
8860 && ppc_elf_hash_entry (h)->has_addr16_ha
8861 && ppc_elf_hash_entry (h)->has_addr16_lo
8862 && htab->params->pic_fixup > 0)))
8868 fprintf (stderr, "ppc_elf_relocate_section needs to "
8869 "create relocation for %s\n",
8870 (h && h->root.root.string
8871 ? h->root.root.string : "<unknown>"));
8874 /* When generating a shared object, these relocations
8875 are copied into the output file to be resolved at run
8877 sreloc = elf_section_data (input_section)->sreloc;
8879 sreloc = htab->elf.irelplt;
8884 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8887 if (outrel.r_offset == (bfd_vma) -1
8888 || outrel.r_offset == (bfd_vma) -2)
8889 skip = (int) outrel.r_offset;
8890 outrel.r_offset += (input_section->output_section->vma
8891 + input_section->output_offset);
8894 memset (&outrel, 0, sizeof outrel);
8896 && (h->root.type == bfd_link_hash_undefined
8897 || h->root.type == bfd_link_hash_undefweak))
8898 || !SYMBOL_REFERENCES_LOCAL (info, h))
8900 BFD_ASSERT (h->dynindx != -1);
8901 unresolved_reloc = FALSE;
8902 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
8903 outrel.r_addend = rel->r_addend;
8907 outrel.r_addend = relocation + rel->r_addend;
8909 if (r_type != R_PPC_ADDR32)
8915 /* If we get here when building a static
8916 executable, then the libc startup function
8917 responsible for applying indirect function
8918 relocations is going to complain about
8920 If we get here when building a dynamic
8921 executable, it will be because we have
8922 a text relocation. The dynamic loader
8923 will set the text segment writable and
8924 non-executable to apply text relocations.
8925 So we'll segfault when trying to run the
8926 indirection function to resolve the reloc. */
8927 info->callbacks->einfo
8928 /* xgettext:c-format */
8929 (_("%P: %H: relocation %s for indirect "
8930 "function %s unsupported\n"),
8931 input_bfd, input_section, rel->r_offset,
8936 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8938 else if (sec == NULL || sec->owner == NULL)
8940 bfd_set_error (bfd_error_bad_value);
8947 /* We are turning this relocation into one
8948 against a section symbol. It would be
8949 proper to subtract the symbol's value,
8950 osec->vma, from the emitted reloc addend,
8951 but ld.so expects buggy relocs.
8952 FIXME: Why not always use a zero index? */
8953 osec = sec->output_section;
8954 indx = elf_section_data (osec)->dynindx;
8957 osec = htab->elf.text_index_section;
8958 indx = elf_section_data (osec)->dynindx;
8960 BFD_ASSERT (indx != 0);
8963 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8964 indx, osec->name, osec->flags,
8965 h->root.root.string);
8969 outrel.r_info = ELF32_R_INFO (indx, r_type);
8971 else if (ifunc != NULL)
8972 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8974 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8977 loc = sreloc->contents;
8978 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8979 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8984 /* This reloc will be computed at runtime. We clear the memory
8985 so that it contains predictable value. */
8987 && ((input_section->flags & SEC_ALLOC) != 0
8988 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
8990 relocation = howto->pc_relative ? outrel.r_offset : 0;
8997 case R_PPC_RELAX_PLT:
8998 case R_PPC_RELAX_PLTREL24:
9001 struct plt_entry *ent;
9002 bfd_vma got2_addend = 0;
9004 if (r_type == R_PPC_RELAX_PLTREL24)
9006 if (bfd_link_pic (info))
9007 got2_addend = addend;
9010 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
9011 if (htab->plt_type == PLT_NEW)
9012 relocation = (htab->glink->output_section->vma
9013 + htab->glink->output_offset
9014 + ent->glink_offset);
9016 relocation = (htab->elf.splt->output_section->vma
9017 + htab->elf.splt->output_offset
9026 size_t insn_offset = rel->r_offset;
9029 if (bfd_link_pic (info))
9031 relocation -= (input_section->output_section->vma
9032 + input_section->output_offset
9033 + rel->r_offset - 4);
9034 stub = shared_stub_entry;
9035 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
9036 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
9037 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
9039 size = ARRAY_SIZE (shared_stub_entry) - 3;
9044 size = ARRAY_SIZE (stub_entry);
9047 relocation += addend;
9048 if (bfd_link_relocatable (info))
9051 /* First insn is HA, second is LO. */
9053 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
9054 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9058 insn |= relocation & 0xffff;
9059 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9067 bfd_put_32 (input_bfd, insn, contents + insn_offset);
9071 /* Rewrite the reloc and convert one of the trailing nop
9072 relocs to describe this relocation. */
9073 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
9074 /* The relocs are at the bottom 2 bytes */
9075 wrel->r_offset = rel->r_offset + d_offset;
9076 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
9077 wrel->r_addend = rel->r_addend;
9078 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
9080 wrel->r_offset += 4;
9081 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
9085 /* Indirect .sdata relocation. */
9086 case R_PPC_EMB_SDAI16:
9087 BFD_ASSERT (htab->sdata[0].section != NULL);
9088 if (!is_static_defined (htab->sdata[0].sym))
9090 unresolved_reloc = TRUE;
9094 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
9095 h, relocation, rel);
9099 /* Indirect .sdata2 relocation. */
9100 case R_PPC_EMB_SDA2I16:
9101 BFD_ASSERT (htab->sdata[1].section != NULL);
9102 if (!is_static_defined (htab->sdata[1].sym))
9104 unresolved_reloc = TRUE;
9108 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9109 h, relocation, rel);
9113 /* Handle the TOC16 reloc. We want to use the offset within the .got
9114 section, not the actual VMA. This is appropriate when generating
9115 an embedded ELF object, for which the .got section acts like the
9116 AIX .toc section. */
9117 case R_PPC_TOC16: /* phony GOT16 relocations */
9118 if (sec == NULL || sec->output_section == NULL)
9120 unresolved_reloc = TRUE;
9123 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9125 || strcmp (bfd_get_section_name (sec->owner, sec),
9128 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9131 case R_PPC_PLTREL24:
9132 if (h != NULL && ifunc == NULL)
9134 struct plt_entry *ent;
9136 ent = find_plt_ent (&h->plt.plist, got2,
9137 bfd_link_pic (info) ? addend : 0);
9139 || htab->elf.splt == NULL)
9141 /* We didn't make a PLT entry for this symbol. This
9142 happens when statically linking PIC code, or when
9143 using -Bsymbolic. */
9147 /* Relocation is to the entry for this symbol in the
9148 procedure linkage table. */
9149 unresolved_reloc = FALSE;
9150 if (htab->plt_type == PLT_NEW)
9151 relocation = (htab->glink->output_section->vma
9152 + htab->glink->output_offset
9153 + ent->glink_offset);
9155 relocation = (htab->elf.splt->output_section->vma
9156 + htab->elf.splt->output_offset
9161 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9162 addend specifies the GOT pointer offset within .got2.
9163 Don't apply it to the relocation field. */
9167 /* Relocate against _SDA_BASE_. */
9168 case R_PPC_SDAREL16:
9171 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9174 || sec->output_section == NULL
9175 || !is_static_defined (sda))
9177 unresolved_reloc = TRUE;
9180 addend -= SYM_VAL (sda);
9182 name = bfd_get_section_name (output_bfd, sec->output_section);
9183 if (!(strcmp (name, ".sdata") == 0
9184 || strcmp (name, ".sbss") == 0))
9186 info->callbacks->einfo
9187 /* xgettext:c-format */
9188 (_("%P: %B: the target (%s) of a %s relocation is "
9189 "in the wrong output section (%s)\n"),
9198 /* Relocate against _SDA2_BASE_. */
9199 case R_PPC_EMB_SDA2REL:
9202 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9205 || sec->output_section == NULL
9206 || !is_static_defined (sda))
9208 unresolved_reloc = TRUE;
9211 addend -= SYM_VAL (sda);
9213 name = bfd_get_section_name (output_bfd, sec->output_section);
9214 if (!(strcmp (name, ".sdata2") == 0
9215 || strcmp (name, ".sbss2") == 0))
9217 info->callbacks->einfo
9218 /* xgettext:c-format */
9219 (_("%P: %B: the target (%s) of a %s relocation is "
9220 "in the wrong output section (%s)\n"),
9229 case R_PPC_VLE_LO16A:
9230 relocation = relocation + addend;
9231 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9232 contents + rel->r_offset, relocation,
9233 split16a_type, htab->params->vle_reloc_fixup);
9236 case R_PPC_VLE_LO16D:
9237 relocation = relocation + addend;
9238 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9239 contents + rel->r_offset, relocation,
9240 split16d_type, htab->params->vle_reloc_fixup);
9243 case R_PPC_VLE_HI16A:
9244 relocation = (relocation + addend) >> 16;
9245 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9246 contents + rel->r_offset, relocation,
9247 split16a_type, htab->params->vle_reloc_fixup);
9250 case R_PPC_VLE_HI16D:
9251 relocation = (relocation + addend) >> 16;
9252 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9253 contents + rel->r_offset, relocation,
9254 split16d_type, htab->params->vle_reloc_fixup);
9257 case R_PPC_VLE_HA16A:
9258 relocation = (relocation + addend + 0x8000) >> 16;
9259 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9260 contents + rel->r_offset, relocation,
9261 split16a_type, htab->params->vle_reloc_fixup);
9264 case R_PPC_VLE_HA16D:
9265 relocation = (relocation + addend + 0x8000) >> 16;
9266 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9267 contents + rel->r_offset, relocation,
9268 split16d_type, htab->params->vle_reloc_fixup);
9271 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9272 case R_PPC_EMB_SDA21:
9273 case R_PPC_VLE_SDA21:
9274 case R_PPC_EMB_RELSDA:
9275 case R_PPC_VLE_SDA21_LO:
9280 struct elf_link_hash_entry *sda = NULL;
9282 if (sec == NULL || sec->output_section == NULL)
9284 unresolved_reloc = TRUE;
9288 name = bfd_get_section_name (output_bfd, sec->output_section);
9289 if (strcmp (name, ".sdata") == 0
9290 || strcmp (name, ".sbss") == 0)
9293 sda = htab->sdata[0].sym;
9295 else if (strcmp (name, ".sdata2") == 0
9296 || strcmp (name, ".sbss2") == 0)
9299 sda = htab->sdata[1].sym;
9301 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9302 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9308 info->callbacks->einfo
9309 /* xgettext:c-format */
9310 (_("%P: %B: the target (%s) of a %s relocation is "
9311 "in the wrong output section (%s)\n"),
9317 bfd_set_error (bfd_error_bad_value);
9324 if (!is_static_defined (sda))
9326 unresolved_reloc = TRUE;
9329 addend -= SYM_VAL (sda);
9332 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9334 && (r_type == R_PPC_VLE_SDA21
9335 || r_type == R_PPC_VLE_SDA21_LO))
9337 relocation = relocation + addend;
9340 /* Force e_li insn, keeping RT from original insn. */
9344 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9345 /* Top 4 bits of value to 17..20. */
9346 insn |= (relocation & 0xf0000) >> 5;
9347 /* Next 5 bits of the value to 11..15. */
9348 insn |= (relocation & 0xf800) << 5;
9349 /* And the final 11 bits of the value to bits 21 to 31. */
9350 insn |= relocation & 0x7ff;
9352 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9354 if (r_type == R_PPC_VLE_SDA21
9355 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9359 else if (r_type == R_PPC_EMB_SDA21
9360 || r_type == R_PPC_VLE_SDA21
9361 || r_type == R_PPC_VLE_SDA21_LO)
9363 /* Fill in register field. */
9364 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9366 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9370 case R_PPC_VLE_SDAREL_LO16A:
9371 case R_PPC_VLE_SDAREL_LO16D:
9372 case R_PPC_VLE_SDAREL_HI16A:
9373 case R_PPC_VLE_SDAREL_HI16D:
9374 case R_PPC_VLE_SDAREL_HA16A:
9375 case R_PPC_VLE_SDAREL_HA16D:
9380 struct elf_link_hash_entry *sda = NULL;
9382 if (sec == NULL || sec->output_section == NULL)
9384 unresolved_reloc = TRUE;
9388 name = bfd_get_section_name (output_bfd, sec->output_section);
9389 if (strcmp (name, ".sdata") == 0
9390 || strcmp (name, ".sbss") == 0)
9393 sda = htab->sdata[0].sym;
9395 else if (strcmp (name, ".sdata2") == 0
9396 || strcmp (name, ".sbss2") == 0)
9399 sda = htab->sdata[1].sym;
9404 /* xgettext:c-format */
9405 (_("%B: the target (%s) of a %s relocation is "
9406 "in the wrong output section (%s)"),
9412 bfd_set_error (bfd_error_bad_value);
9419 if (!is_static_defined (sda))
9421 unresolved_reloc = TRUE;
9426 value = (sda->root.u.def.section->output_section->vma
9427 + sda->root.u.def.section->output_offset
9430 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9431 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9432 contents + rel->r_offset, value,
9434 htab->params->vle_reloc_fixup);
9435 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9436 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9437 contents + rel->r_offset, value,
9439 htab->params->vle_reloc_fixup);
9440 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9442 value = value >> 16;
9443 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9444 contents + rel->r_offset, value,
9446 htab->params->vle_reloc_fixup);
9448 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9450 value = value >> 16;
9451 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9452 contents + rel->r_offset, value,
9454 htab->params->vle_reloc_fixup);
9456 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9458 value = (value + 0x8000) >> 16;
9459 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9460 contents + rel->r_offset, value,
9462 htab->params->vle_reloc_fixup);
9464 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9466 value = (value + 0x8000) >> 16;
9467 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9468 contents + rel->r_offset, value,
9470 htab->params->vle_reloc_fixup);
9475 /* Relocate against the beginning of the section. */
9477 case R_PPC_SECTOFF_LO:
9478 case R_PPC_SECTOFF_HI:
9479 case R_PPC_SECTOFF_HA:
9480 if (sec == NULL || sec->output_section == NULL)
9482 unresolved_reloc = TRUE;
9485 addend -= sec->output_section->vma;
9488 /* Negative relocations. */
9489 case R_PPC_EMB_NADDR32:
9490 case R_PPC_EMB_NADDR16:
9491 case R_PPC_EMB_NADDR16_LO:
9492 case R_PPC_EMB_NADDR16_HI:
9493 case R_PPC_EMB_NADDR16_HA:
9494 addend -= 2 * relocation;
9498 case R_PPC_GLOB_DAT:
9499 case R_PPC_JMP_SLOT:
9500 case R_PPC_RELATIVE:
9501 case R_PPC_IRELATIVE:
9503 case R_PPC_PLTREL32:
9504 case R_PPC_PLT16_LO:
9505 case R_PPC_PLT16_HI:
9506 case R_PPC_PLT16_HA:
9508 case R_PPC_EMB_RELSEC16:
9509 case R_PPC_EMB_RELST_LO:
9510 case R_PPC_EMB_RELST_HI:
9511 case R_PPC_EMB_RELST_HA:
9512 case R_PPC_EMB_BIT_FLD:
9513 info->callbacks->einfo
9514 /* xgettext:c-format */
9515 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9520 bfd_set_error (bfd_error_invalid_operation);
9525 /* Do any further special processing. */
9531 case R_PPC_ADDR16_HA:
9532 case R_PPC_REL16_HA:
9533 case R_PPC_REL16DX_HA:
9534 case R_PPC_SECTOFF_HA:
9535 case R_PPC_TPREL16_HA:
9536 case R_PPC_DTPREL16_HA:
9537 case R_PPC_EMB_NADDR16_HA:
9538 case R_PPC_EMB_RELST_HA:
9539 /* It's just possible that this symbol is a weak symbol
9540 that's not actually defined anywhere. In that case,
9541 'sec' would be NULL, and we should leave the symbol
9542 alone (it will be set to zero elsewhere in the link). */
9547 case R_PPC_PLT16_HA:
9548 case R_PPC_GOT16_HA:
9549 case R_PPC_GOT_TLSGD16_HA:
9550 case R_PPC_GOT_TLSLD16_HA:
9551 case R_PPC_GOT_TPREL16_HA:
9552 case R_PPC_GOT_DTPREL16_HA:
9553 /* Add 0x10000 if sign bit in 0:15 is set.
9554 Bits 0:15 are not used. */
9559 case R_PPC_ADDR16_LO:
9561 case R_PPC_GOT16_LO:
9562 case R_PPC_SDAREL16:
9564 case R_PPC_SECTOFF_LO:
9565 case R_PPC_DTPREL16:
9566 case R_PPC_DTPREL16_LO:
9568 case R_PPC_TPREL16_LO:
9569 case R_PPC_GOT_TLSGD16:
9570 case R_PPC_GOT_TLSGD16_LO:
9571 case R_PPC_GOT_TLSLD16:
9572 case R_PPC_GOT_TLSLD16_LO:
9573 case R_PPC_GOT_DTPREL16:
9574 case R_PPC_GOT_DTPREL16_LO:
9575 case R_PPC_GOT_TPREL16:
9576 case R_PPC_GOT_TPREL16_LO:
9578 /* The 32-bit ABI lacks proper relocations to deal with
9579 certain 64-bit instructions. Prevent damage to bits
9580 that make up part of the insn opcode. */
9581 unsigned int insn, mask, lobit;
9583 insn = bfd_get_32 (input_bfd,
9584 contents + rel->r_offset - d_offset);
9586 if (is_insn_ds_form (insn))
9588 else if (is_insn_dq_form (insn))
9592 relocation += addend;
9593 addend = insn & mask;
9594 lobit = mask & relocation;
9597 relocation ^= lobit;
9598 info->callbacks->einfo
9599 /* xgettext:c-format */
9600 (_("%P: %H: error: %s against `%s' not a multiple of %u\n"),
9601 input_bfd, input_section, rel->r_offset,
9602 howto->name, sym_name, mask + 1);
9603 bfd_set_error (bfd_error_bad_value);
9611 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9612 "offset = %ld, addend = %ld\n",
9617 (long) rel->r_offset,
9621 if (unresolved_reloc
9622 && !((input_section->flags & SEC_DEBUGGING) != 0
9624 && _bfd_elf_section_offset (output_bfd, info, input_section,
9625 rel->r_offset) != (bfd_vma) -1)
9627 info->callbacks->einfo
9628 /* xgettext:c-format */
9629 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
9630 input_bfd, input_section, rel->r_offset,
9636 /* 16-bit fields in insns mostly have signed values, but a
9637 few insns have 16-bit unsigned values. Really, we should
9638 have different reloc types. */
9639 if (howto->complain_on_overflow != complain_overflow_dont
9640 && howto->dst_mask == 0xffff
9641 && (input_section->flags & SEC_CODE) != 0)
9643 enum complain_overflow complain = complain_overflow_signed;
9645 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9649 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9650 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9651 complain = complain_overflow_bitfield;
9652 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9653 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9654 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9655 complain = complain_overflow_unsigned;
9657 if (howto->complain_on_overflow != complain)
9660 alt_howto.complain_on_overflow = complain;
9665 if (r_type == R_PPC_REL16DX_HA)
9667 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9668 if (rel->r_offset + 4 > input_section->size)
9669 r = bfd_reloc_outofrange;
9674 relocation += addend;
9675 relocation -= (rel->r_offset
9676 + input_section->output_offset
9677 + input_section->output_section->vma);
9679 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9681 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9682 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9687 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9688 rel->r_offset, relocation, addend);
9690 if (r != bfd_reloc_ok)
9692 if (r == bfd_reloc_overflow)
9695 /* On code like "if (foo) foo();" don't report overflow
9696 on a branch to zero when foo is undefined. */
9699 && (h->root.type == bfd_link_hash_undefweak
9700 || h->root.type == bfd_link_hash_undefined)
9701 && is_branch_reloc (r_type)))
9702 info->callbacks->reloc_overflow
9703 (info, (h ? &h->root : NULL), sym_name, howto->name,
9704 rel->r_addend, input_bfd, input_section, rel->r_offset);
9708 info->callbacks->einfo
9709 /* xgettext:c-format */
9710 (_("%P: %H: %s reloc against `%s': error %d\n"),
9711 input_bfd, input_section, rel->r_offset,
9712 howto->name, sym_name, (int) r);
9723 Elf_Internal_Shdr *rel_hdr;
9724 size_t deleted = rel - wrel;
9726 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9727 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9728 if (rel_hdr->sh_size == 0)
9730 /* It is too late to remove an empty reloc section. Leave
9732 ??? What is wrong with an empty section??? */
9733 rel_hdr->sh_size = rel_hdr->sh_entsize;
9738 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9739 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9740 input_section->reloc_count -= deleted;
9744 fprintf (stderr, "\n");
9747 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9748 && input_section->size != input_section->rawsize
9749 && (strcmp (input_section->output_section->name, ".init") == 0
9750 || strcmp (input_section->output_section->name, ".fini") == 0))
9752 /* Branch around the trampolines. */
9753 unsigned int insn = B + input_section->size - input_section->rawsize;
9754 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9757 if (htab->params->ppc476_workaround
9758 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9759 && (!bfd_link_relocatable (info)
9760 || (input_section->output_section->alignment_power
9761 >= htab->params->pagesize_p2)))
9763 bfd_vma start_addr, end_addr, addr;
9764 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9766 if (relax_info->workaround_size != 0)
9772 bfd_put_32 (input_bfd, BA, fill);
9773 p = contents + input_section->size - relax_info->workaround_size;
9774 n = relax_info->workaround_size >> 2;
9777 memcpy (p, fill, 4);
9782 /* The idea is: Replace the last instruction on a page with a
9783 branch to a patch area. Put the insn there followed by a
9784 branch back to the next page. Complicated a little by
9785 needing to handle moved conditional branches, and by not
9786 wanting to touch data-in-text. */
9788 start_addr = (input_section->output_section->vma
9789 + input_section->output_offset);
9790 end_addr = (start_addr + input_section->size
9791 - relax_info->workaround_size);
9792 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9796 bfd_vma offset = addr - start_addr;
9797 Elf_Internal_Rela *lo, *hi;
9798 bfd_boolean is_data;
9799 bfd_vma patch_off, patch_addr;
9802 /* Do we have a data reloc at this offset? If so, leave
9810 rel = lo + (hi - lo) / 2;
9811 if (rel->r_offset < offset)
9813 else if (rel->r_offset > offset + 3)
9817 switch (ELF32_R_TYPE (rel->r_info))
9834 /* Some instructions can be left alone too. Unconditional
9835 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9836 avoid the icache failure.
9838 The problem occurs due to prefetch across a page boundary
9839 where stale instructions can be fetched from the next
9840 page, and the mechanism for flushing these bad
9841 instructions fails under certain circumstances. The
9842 unconditional branches:
9843 1) Branch: b, bl, ba, bla,
9844 2) Branch Conditional: bc, bca, bcl, bcla,
9845 3) Branch Conditional to Link Register: bclr, bclrl,
9846 where (2) and (3) have BO=0x14 making them unconditional,
9847 prevent the bad prefetch because the prefetch itself is
9848 affected by these instructions. This happens even if the
9849 instruction is not executed.
9854 . addi 9,9,new_page@l
9861 The bctr is not predicted taken due to ctr not being
9862 ready, so prefetch continues on past the bctr into the
9863 new page which might have stale instructions. If they
9864 fail to be flushed, then they will be executed after the
9865 bctr executes. Either of the following modifications
9866 prevent the bad prefetch from happening in the first
9869 . lis 9,new_page@ha lis 9,new_page@ha
9870 . addi 9,9,new_page@l addi 9,9,new_page@l
9873 . nop b somewhere_else
9874 . b somewhere_else nop
9875 . new_page: new_page:
9877 insn = bfd_get_32 (input_bfd, contents + offset);
9878 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9879 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9880 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9881 || ((insn & (0x3f << 26)) == (19u << 26)
9882 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9883 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9886 patch_addr = (start_addr + input_section->size
9887 - relax_info->workaround_size);
9888 patch_addr = (patch_addr + 15) & -16;
9889 patch_off = patch_addr - start_addr;
9890 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9893 && rel->r_offset >= offset
9894 && rel->r_offset < offset + 4)
9898 /* If the insn we are patching had a reloc, adjust the
9899 reloc r_offset so that the reloc applies to the moved
9900 location. This matters for -r and --emit-relocs. */
9901 if (rel + 1 != relend)
9903 Elf_Internal_Rela tmp = *rel;
9905 /* Keep the relocs sorted by r_offset. */
9906 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9909 relend[-1].r_offset += patch_off - offset;
9911 /* Adjust REL16 addends too. */
9912 switch (ELF32_R_TYPE (relend[-1].r_info))
9915 case R_PPC_REL16_LO:
9916 case R_PPC_REL16_HI:
9917 case R_PPC_REL16_HA:
9918 relend[-1].r_addend += patch_off - offset;
9924 /* If we are building a PIE or shared library with
9925 non-PIC objects, perhaps we had a dynamic reloc too?
9926 If so, the dynamic reloc must move with the insn. */
9927 sreloc = elf_section_data (input_section)->sreloc;
9930 Elf32_External_Rela *slo, *shi, *srelend;
9933 slo = (Elf32_External_Rela *) sreloc->contents;
9934 shi = srelend = slo + sreloc->reloc_count;
9935 soffset = (offset + input_section->output_section->vma
9936 + input_section->output_offset);
9939 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9940 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9942 if (outrel.r_offset < soffset)
9944 else if (outrel.r_offset > soffset + 3)
9948 if (srel + 1 != srelend)
9950 memmove (srel, srel + 1,
9951 (srelend - (srel + 1)) * sizeof (*srel));
9954 outrel.r_offset += patch_off - offset;
9955 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9965 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9966 && (insn & 2) == 0 /* relative */)
9968 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9970 delta += offset - patch_off;
9971 if (bfd_link_relocatable (info) && rel != NULL)
9973 if (!bfd_link_relocatable (info) && rel != NULL)
9975 enum elf_ppc_reloc_type r_type;
9977 r_type = ELF32_R_TYPE (relend[-1].r_info);
9978 if (r_type == R_PPC_REL14_BRTAKEN)
9979 insn |= BRANCH_PREDICT_BIT;
9980 else if (r_type == R_PPC_REL14_BRNTAKEN)
9981 insn &= ~BRANCH_PREDICT_BIT;
9983 BFD_ASSERT (r_type == R_PPC_REL14);
9985 if ((r_type == R_PPC_REL14_BRTAKEN
9986 || r_type == R_PPC_REL14_BRNTAKEN)
9987 && delta + 0x8000 < 0x10000
9988 && (bfd_signed_vma) delta < 0)
9989 insn ^= BRANCH_PREDICT_BIT;
9991 if (delta + 0x8000 < 0x10000)
9993 bfd_put_32 (input_bfd,
9994 (insn & ~0xfffc) | (delta & 0xfffc),
9995 contents + patch_off);
9997 bfd_put_32 (input_bfd,
9998 B | ((offset + 4 - patch_off) & 0x3fffffc),
9999 contents + patch_off);
10006 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
10008 relend[-1].r_offset += 8;
10009 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
10011 bfd_put_32 (input_bfd,
10012 (insn & ~0xfffc) | 8,
10013 contents + patch_off);
10015 bfd_put_32 (input_bfd,
10016 B | ((offset + 4 - patch_off) & 0x3fffffc),
10017 contents + patch_off);
10019 bfd_put_32 (input_bfd,
10020 B | ((delta - 8) & 0x3fffffc),
10021 contents + patch_off);
10027 bfd_put_32 (input_bfd, insn, contents + patch_off);
10029 bfd_put_32 (input_bfd,
10030 B | ((offset + 4 - patch_off) & 0x3fffffc),
10031 contents + patch_off);
10034 BFD_ASSERT (patch_off <= input_section->size);
10035 relax_info->workaround_size = input_section->size - patch_off;
10042 /* Finish up dynamic symbol handling. We set the contents of various
10043 dynamic sections here. */
10046 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
10047 struct bfd_link_info *info,
10048 struct elf_link_hash_entry *h,
10049 Elf_Internal_Sym *sym)
10051 struct ppc_elf_link_hash_table *htab;
10052 struct plt_entry *ent;
10053 bfd_boolean doneone;
10056 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
10057 h->root.root.string);
10060 htab = ppc_elf_hash_table (info);
10061 BFD_ASSERT (htab->elf.dynobj != NULL);
10064 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10065 if (ent->plt.offset != (bfd_vma) -1)
10069 Elf_Internal_Rela rela;
10071 bfd_vma reloc_index;
10073 if (htab->plt_type == PLT_NEW
10074 || !htab->elf.dynamic_sections_created
10075 || h->dynindx == -1)
10076 reloc_index = ent->plt.offset / 4;
10079 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
10080 / htab->plt_slot_size);
10081 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
10082 && htab->plt_type == PLT_OLD)
10083 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
10086 /* This symbol has an entry in the procedure linkage table.
10088 if (htab->plt_type == PLT_VXWORKS
10089 && htab->elf.dynamic_sections_created
10090 && h->dynindx != -1)
10092 bfd_vma got_offset;
10093 const bfd_vma *plt_entry;
10095 /* The first three entries in .got.plt are reserved. */
10096 got_offset = (reloc_index + 3) * 4;
10098 /* Use the right PLT. */
10099 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
10100 : ppc_elf_vxworks_plt_entry;
10102 /* Fill in the .plt on VxWorks. */
10103 if (bfd_link_pic (info))
10105 bfd_put_32 (output_bfd,
10106 plt_entry[0] | PPC_HA (got_offset),
10107 htab->elf.splt->contents + ent->plt.offset + 0);
10108 bfd_put_32 (output_bfd,
10109 plt_entry[1] | PPC_LO (got_offset),
10110 htab->elf.splt->contents + ent->plt.offset + 4);
10114 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10116 bfd_put_32 (output_bfd,
10117 plt_entry[0] | PPC_HA (got_loc),
10118 htab->elf.splt->contents + ent->plt.offset + 0);
10119 bfd_put_32 (output_bfd,
10120 plt_entry[1] | PPC_LO (got_loc),
10121 htab->elf.splt->contents + ent->plt.offset + 4);
10124 bfd_put_32 (output_bfd, plt_entry[2],
10125 htab->elf.splt->contents + ent->plt.offset + 8);
10126 bfd_put_32 (output_bfd, plt_entry[3],
10127 htab->elf.splt->contents + ent->plt.offset + 12);
10129 /* This instruction is an immediate load. The value loaded is
10130 the byte offset of the R_PPC_JMP_SLOT relocation from the
10131 start of the .rela.plt section. The value is stored in the
10132 low-order 16 bits of the load instruction. */
10133 /* NOTE: It appears that this is now an index rather than a
10134 prescaled offset. */
10135 bfd_put_32 (output_bfd,
10136 plt_entry[4] | reloc_index,
10137 htab->elf.splt->contents + ent->plt.offset + 16);
10138 /* This instruction is a PC-relative branch whose target is
10139 the start of the PLT section. The address of this branch
10140 instruction is 20 bytes beyond the start of this PLT entry.
10141 The address is encoded in bits 6-29, inclusive. The value
10142 stored is right-shifted by two bits, permitting a 26-bit
10144 bfd_put_32 (output_bfd,
10146 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10147 htab->elf.splt->contents + ent->plt.offset + 20);
10148 bfd_put_32 (output_bfd, plt_entry[6],
10149 htab->elf.splt->contents + ent->plt.offset + 24);
10150 bfd_put_32 (output_bfd, plt_entry[7],
10151 htab->elf.splt->contents + ent->plt.offset + 28);
10153 /* Fill in the GOT entry corresponding to this PLT slot with
10154 the address immediately after the "bctr" instruction
10155 in this PLT entry. */
10156 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10157 + htab->elf.splt->output_offset
10158 + ent->plt.offset + 16),
10159 htab->elf.sgotplt->contents + got_offset);
10161 if (!bfd_link_pic (info))
10163 /* Fill in a couple of entries in .rela.plt.unloaded. */
10164 loc = htab->srelplt2->contents
10165 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10166 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10167 * sizeof (Elf32_External_Rela));
10169 /* Provide the @ha relocation for the first instruction. */
10170 rela.r_offset = (htab->elf.splt->output_section->vma
10171 + htab->elf.splt->output_offset
10172 + ent->plt.offset + 2);
10173 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10175 rela.r_addend = got_offset;
10176 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10177 loc += sizeof (Elf32_External_Rela);
10179 /* Provide the @l relocation for the second instruction. */
10180 rela.r_offset = (htab->elf.splt->output_section->vma
10181 + htab->elf.splt->output_offset
10182 + ent->plt.offset + 6);
10183 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10185 rela.r_addend = got_offset;
10186 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10187 loc += sizeof (Elf32_External_Rela);
10189 /* Provide a relocation for the GOT entry corresponding to this
10190 PLT slot. Point it at the middle of the .plt entry. */
10191 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10192 + htab->elf.sgotplt->output_offset
10194 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10196 rela.r_addend = ent->plt.offset + 16;
10197 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10200 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10201 In particular, the offset for the relocation is not the
10202 address of the PLT entry for this function, as specified
10203 by the ABI. Instead, the offset is set to the address of
10204 the GOT slot for this function. See EABI 4.4.4.1. */
10205 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10206 + htab->elf.sgotplt->output_offset
10212 asection *splt = htab->elf.splt;
10213 if (!htab->elf.dynamic_sections_created
10214 || h->dynindx == -1)
10215 splt = htab->elf.iplt;
10217 rela.r_offset = (splt->output_section->vma
10218 + splt->output_offset
10219 + ent->plt.offset);
10220 if (htab->plt_type == PLT_OLD
10221 || !htab->elf.dynamic_sections_created
10222 || h->dynindx == -1)
10224 /* We don't need to fill in the .plt. The ppc dynamic
10225 linker will fill it in. */
10229 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10230 + htab->glink->output_section->vma
10231 + htab->glink->output_offset);
10232 bfd_put_32 (output_bfd, val,
10233 splt->contents + ent->plt.offset);
10237 /* Fill in the entry in the .rela.plt section. */
10239 if (!htab->elf.dynamic_sections_created
10240 || h->dynindx == -1)
10242 BFD_ASSERT (h->type == STT_GNU_IFUNC
10244 && (h->root.type == bfd_link_hash_defined
10245 || h->root.type == bfd_link_hash_defweak));
10246 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10247 rela.r_addend = SYM_VAL (h);
10250 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10252 if (!htab->elf.dynamic_sections_created
10253 || h->dynindx == -1)
10254 loc = (htab->elf.irelplt->contents
10255 + (htab->elf.irelplt->reloc_count++
10256 * sizeof (Elf32_External_Rela)));
10258 loc = (htab->elf.srelplt->contents
10259 + reloc_index * sizeof (Elf32_External_Rela));
10260 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10262 if (!h->def_regular)
10264 /* Mark the symbol as undefined, rather than as
10265 defined in the .plt section. Leave the value if
10266 there were any relocations where pointer equality
10267 matters (this is a clue for the dynamic linker, to
10268 make function pointer comparisons work between an
10269 application and shared library), otherwise set it
10271 sym->st_shndx = SHN_UNDEF;
10272 if (!h->pointer_equality_needed)
10274 else if (!h->ref_regular_nonweak)
10276 /* This breaks function pointer comparisons, but
10277 that is better than breaking tests for a NULL
10278 function pointer. */
10282 else if (h->type == STT_GNU_IFUNC
10283 && !bfd_link_pic (info))
10285 /* Set the value of ifunc symbols in a non-pie
10286 executable to the glink entry. This is to avoid
10287 text relocations. We can't do this for ifunc in
10288 allocate_dynrelocs, as we do for normal dynamic
10289 function symbols with plt entries, because we need
10290 to keep the original value around for the ifunc
10292 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10293 (output_bfd, htab->glink->output_section));
10294 sym->st_value = (ent->glink_offset
10295 + htab->glink->output_offset
10296 + htab->glink->output_section->vma);
10301 if (htab->plt_type == PLT_NEW
10302 || !htab->elf.dynamic_sections_created
10303 || h->dynindx == -1)
10306 asection *splt = htab->elf.splt;
10307 if (!htab->elf.dynamic_sections_created
10308 || h->dynindx == -1)
10309 splt = htab->elf.iplt;
10311 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10313 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10315 bfd_put_32 (output_bfd, LWZ_11_3, p);
10317 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10319 bfd_put_32 (output_bfd, MR_0_3, p);
10321 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10323 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10325 bfd_put_32 (output_bfd, BEQLR, p);
10327 bfd_put_32 (output_bfd, MR_3_0, p);
10329 bfd_put_32 (output_bfd, NOP, p);
10333 write_glink_stub (ent, splt, p, info);
10335 if (!bfd_link_pic (info))
10336 /* We only need one non-PIC glink stub. */
10346 Elf_Internal_Rela rela;
10349 /* This symbols needs a copy reloc. Set it up. */
10352 fprintf (stderr, ", copy");
10355 BFD_ASSERT (h->dynindx != -1);
10357 if (ppc_elf_hash_entry (h)->has_sda_refs)
10360 s = htab->elf.srelbss;
10361 BFD_ASSERT (s != NULL);
10363 rela.r_offset = SYM_VAL (h);
10364 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10366 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10367 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10371 fprintf (stderr, "\n");
10377 static enum elf_reloc_type_class
10378 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10379 const asection *rel_sec,
10380 const Elf_Internal_Rela *rela)
10382 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10384 if (rel_sec == htab->elf.irelplt)
10385 return reloc_class_ifunc;
10387 switch (ELF32_R_TYPE (rela->r_info))
10389 case R_PPC_RELATIVE:
10390 return reloc_class_relative;
10391 case R_PPC_JMP_SLOT:
10392 return reloc_class_plt;
10394 return reloc_class_copy;
10396 return reloc_class_normal;
10400 /* Finish up the dynamic sections. */
10403 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10404 struct bfd_link_info *info)
10408 struct ppc_elf_link_hash_table *htab;
10411 bfd_boolean ret = TRUE;
10414 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10417 htab = ppc_elf_hash_table (info);
10418 dynobj = htab->elf.dynobj;
10419 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10420 if (htab->is_vxworks)
10421 splt = htab->elf.splt;
10426 if (htab->elf.hgot != NULL)
10427 got = SYM_VAL (htab->elf.hgot);
10429 if (htab->elf.dynamic_sections_created)
10431 Elf32_External_Dyn *dyncon, *dynconend;
10433 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10435 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10436 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10437 for (; dyncon < dynconend; dyncon++)
10439 Elf_Internal_Dyn dyn;
10442 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10447 if (htab->is_vxworks)
10448 s = htab->elf.sgotplt;
10450 s = htab->elf.splt;
10451 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10455 dyn.d_un.d_val = htab->elf.srelplt->size;
10459 s = htab->elf.srelplt;
10460 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10464 dyn.d_un.d_ptr = got;
10468 if (htab->is_vxworks
10469 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10474 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10478 if (htab->elf.sgot != NULL)
10480 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10481 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10483 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10485 p += htab->elf.hgot->root.u.def.value;
10486 if (htab->plt_type == PLT_OLD)
10488 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10489 so that a function can easily find the address of
10490 _GLOBAL_OFFSET_TABLE_. */
10491 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10492 < htab->elf.hgot->root.u.def.section->size);
10493 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10498 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10499 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10500 < htab->elf.hgot->root.u.def.section->size);
10501 bfd_put_32 (output_bfd, val, p);
10506 /* xgettext:c-format */
10507 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10508 htab->elf.hgot->root.root.string,
10509 (htab->elf.sgotplt != NULL
10510 ? htab->elf.sgotplt->name
10511 : htab->elf.sgot->name));
10512 bfd_set_error (bfd_error_bad_value);
10516 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10519 /* Fill in the first entry in the VxWorks procedure linkage table. */
10520 if (splt && splt->size > 0)
10522 /* Use the right PLT. */
10523 const bfd_vma *plt_entry = (bfd_link_pic (info)
10524 ? ppc_elf_vxworks_pic_plt0_entry
10525 : ppc_elf_vxworks_plt0_entry);
10527 if (!bfd_link_pic (info))
10529 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10531 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10532 splt->contents + 0);
10533 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10534 splt->contents + 4);
10538 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10539 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10541 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10542 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10543 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10544 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10545 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10546 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10548 if (! bfd_link_pic (info))
10550 Elf_Internal_Rela rela;
10553 loc = htab->srelplt2->contents;
10555 /* Output the @ha relocation for the first instruction. */
10556 rela.r_offset = (htab->elf.splt->output_section->vma
10557 + htab->elf.splt->output_offset
10559 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10561 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10562 loc += sizeof (Elf32_External_Rela);
10564 /* Output the @l relocation for the second instruction. */
10565 rela.r_offset = (htab->elf.splt->output_section->vma
10566 + htab->elf.splt->output_offset
10568 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10570 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10571 loc += sizeof (Elf32_External_Rela);
10573 /* Fix up the remaining relocations. They may have the wrong
10574 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10575 in which symbols were output. */
10576 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10578 Elf_Internal_Rela rel;
10580 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10581 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10582 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10583 loc += sizeof (Elf32_External_Rela);
10585 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10586 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10587 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10588 loc += sizeof (Elf32_External_Rela);
10590 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10591 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10592 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10593 loc += sizeof (Elf32_External_Rela);
10598 if (htab->glink != NULL
10599 && htab->glink->contents != NULL
10600 && htab->elf.dynamic_sections_created)
10603 unsigned char *endp;
10608 * PIC glink code is the following:
10610 * # ith PLT code stub.
10611 * addis 11,30,(plt+(i-1)*4-got)@ha
10612 * lwz 11,(plt+(i-1)*4-got)@l(11)
10616 * # A table of branches, one for each plt entry.
10617 * # The idea is that the plt call stub loads ctr and r11 with these
10618 * # addresses, so (r11 - res_0) gives the plt index * 4.
10619 * res_0: b PLTresolve
10620 * res_1: b PLTresolve
10622 * # Some number of entries towards the end can be nops
10628 * addis 11,11,(1f-res_0)@ha
10631 * 1: addi 11,11,(1b-res_0)@l
10634 * sub 11,11,12 # r11 = index * 4
10635 * addis 12,12,(got+4-1b)@ha
10636 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10637 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10640 * add 11,0,11 # r11 = index * 12 = reloc offset.
10643 static const unsigned int pic_plt_resolve[] =
10664 * Non-PIC glink code is a little simpler.
10666 * # ith PLT code stub.
10667 * lis 11,(plt+(i-1)*4)@ha
10668 * lwz 11,(plt+(i-1)*4)@l(11)
10672 * The branch table is the same, then comes
10675 * lis 12,(got+4)@ha
10676 * addis 11,11,(-res_0)@ha
10677 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10678 * addi 11,11,(-res_0)@l # r11 = index * 4
10681 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10682 * add 11,0,11 # r11 = index * 12 = reloc offset.
10685 static const unsigned int plt_resolve[] =
10705 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10707 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10710 /* Build the branch table, one for each plt entry (less one),
10711 and perhaps some padding. */
10712 p = htab->glink->contents;
10713 p += htab->glink_pltresolve;
10714 endp = htab->glink->contents;
10715 endp += htab->glink->size - GLINK_PLTRESOLVE;
10716 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10718 bfd_put_32 (output_bfd, B + endp - p, p);
10723 bfd_put_32 (output_bfd, NOP, p);
10727 res0 = (htab->glink_pltresolve
10728 + htab->glink->output_section->vma
10729 + htab->glink->output_offset);
10731 if (htab->params->ppc476_workaround)
10733 /* Ensure that a call stub at the end of a page doesn't
10734 result in prefetch over the end of the page into the
10735 glink branch table. */
10736 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10738 bfd_vma glink_start = (htab->glink->output_section->vma
10739 + htab->glink->output_offset);
10741 for (page_addr = res0 & -pagesize;
10742 page_addr > glink_start;
10743 page_addr -= pagesize)
10745 /* We have a plt call stub that may need fixing. */
10749 loc = htab->glink->contents + page_addr - 4 - glink_start;
10750 insn = bfd_get_32 (output_bfd, loc);
10753 /* By alignment, we know that there must be at least
10754 one other call stub before this one. */
10755 insn = bfd_get_32 (output_bfd, loc - 16);
10757 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10759 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10764 /* Last comes the PLTresolve stub. */
10765 if (bfd_link_pic (info))
10769 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10771 unsigned int insn = pic_plt_resolve[i];
10773 if (htab->params->ppc476_workaround && insn == NOP)
10775 bfd_put_32 (output_bfd, insn, p);
10778 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10780 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10781 + htab->glink->output_section->vma
10782 + htab->glink->output_offset);
10784 bfd_put_32 (output_bfd,
10785 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10786 bfd_put_32 (output_bfd,
10787 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10788 bfd_put_32 (output_bfd,
10789 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10790 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10792 bfd_put_32 (output_bfd,
10793 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10794 bfd_put_32 (output_bfd,
10795 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10799 bfd_put_32 (output_bfd,
10800 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10801 bfd_put_32 (output_bfd,
10802 LWZ_12_12 + 4, p + 9*4);
10807 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10809 unsigned int insn = plt_resolve[i];
10811 if (htab->params->ppc476_workaround && insn == NOP)
10813 bfd_put_32 (output_bfd, insn, p);
10816 p -= 4 * ARRAY_SIZE (plt_resolve);
10818 bfd_put_32 (output_bfd,
10819 LIS_12 + PPC_HA (got + 4), p + 0*4);
10820 bfd_put_32 (output_bfd,
10821 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10822 bfd_put_32 (output_bfd,
10823 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10824 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10826 bfd_put_32 (output_bfd,
10827 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10828 bfd_put_32 (output_bfd,
10829 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10833 bfd_put_32 (output_bfd,
10834 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10835 bfd_put_32 (output_bfd,
10836 LWZ_12_12 + 4, p + 6*4);
10841 if (htab->glink_eh_frame != NULL
10842 && htab->glink_eh_frame->contents != NULL)
10844 unsigned char *p = htab->glink_eh_frame->contents;
10847 p += sizeof (glink_eh_frame_cie);
10852 /* Offset to .glink. */
10853 val = (htab->glink->output_section->vma
10854 + htab->glink->output_offset);
10855 val -= (htab->glink_eh_frame->output_section->vma
10856 + htab->glink_eh_frame->output_offset);
10857 val -= p - htab->glink_eh_frame->contents;
10858 bfd_put_32 (htab->elf.dynobj, val, p);
10860 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10861 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10862 htab->glink_eh_frame,
10863 htab->glink_eh_frame->contents))
10870 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10871 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10872 #define TARGET_BIG_SYM powerpc_elf32_vec
10873 #define TARGET_BIG_NAME "elf32-powerpc"
10874 #define ELF_ARCH bfd_arch_powerpc
10875 #define ELF_TARGET_ID PPC32_ELF_DATA
10876 #define ELF_MACHINE_CODE EM_PPC
10877 #ifdef __QNXTARGET__
10878 #define ELF_MAXPAGESIZE 0x1000
10879 #define ELF_COMMONPAGESIZE 0x1000
10881 #define ELF_MAXPAGESIZE 0x10000
10882 #define ELF_COMMONPAGESIZE 0x10000
10884 #define ELF_MINPAGESIZE 0x1000
10885 #define elf_info_to_howto ppc_elf_info_to_howto
10887 #ifdef EM_CYGNUS_POWERPC
10888 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10892 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10895 #define elf_backend_plt_not_loaded 1
10896 #define elf_backend_can_gc_sections 1
10897 #define elf_backend_can_refcount 1
10898 #define elf_backend_rela_normal 1
10899 #define elf_backend_caches_rawsize 1
10901 #define bfd_elf32_mkobject ppc_elf_mkobject
10902 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10903 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10904 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10905 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10906 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10907 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10908 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10910 #define elf_backend_object_p ppc_elf_object_p
10911 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10912 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
10913 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10914 #define elf_backend_relocate_section ppc_elf_relocate_section
10915 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10916 #define elf_backend_check_relocs ppc_elf_check_relocs
10917 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10918 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10919 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10920 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10921 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10922 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10923 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10924 #define elf_backend_fake_sections ppc_elf_fake_sections
10925 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10926 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10927 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10928 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10929 #define elf_backend_write_core_note ppc_elf_write_core_note
10930 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10931 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10932 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10933 #define elf_backend_write_section ppc_elf_write_section
10934 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10935 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10936 #define elf_backend_action_discarded ppc_elf_action_discarded
10937 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10938 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10940 #include "elf32-target.h"
10942 /* FreeBSD Target */
10944 #undef TARGET_LITTLE_SYM
10945 #undef TARGET_LITTLE_NAME
10947 #undef TARGET_BIG_SYM
10948 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10949 #undef TARGET_BIG_NAME
10950 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10953 #define ELF_OSABI ELFOSABI_FREEBSD
10956 #define elf32_bed elf32_powerpc_fbsd_bed
10958 #include "elf32-target.h"
10960 /* VxWorks Target */
10962 #undef TARGET_LITTLE_SYM
10963 #undef TARGET_LITTLE_NAME
10965 #undef TARGET_BIG_SYM
10966 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10967 #undef TARGET_BIG_NAME
10968 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10972 /* VxWorks uses the elf default section flags for .plt. */
10973 static const struct bfd_elf_special_section *
10974 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
10976 if (sec->name == NULL)
10979 if (strcmp (sec->name, ".plt") == 0)
10980 return _bfd_elf_get_sec_type_attr (abfd, sec);
10982 return ppc_elf_get_sec_type_attr (abfd, sec);
10985 /* Like ppc_elf_link_hash_table_create, but overrides
10986 appropriately for VxWorks. */
10987 static struct bfd_link_hash_table *
10988 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10990 struct bfd_link_hash_table *ret;
10992 ret = ppc_elf_link_hash_table_create (abfd);
10995 struct ppc_elf_link_hash_table *htab
10996 = (struct ppc_elf_link_hash_table *)ret;
10997 htab->is_vxworks = 1;
10998 htab->plt_type = PLT_VXWORKS;
10999 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
11000 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
11001 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
11006 /* Tweak magic VxWorks symbols as they are loaded. */
11008 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
11009 struct bfd_link_info *info,
11010 Elf_Internal_Sym *sym,
11011 const char **namep ATTRIBUTE_UNUSED,
11012 flagword *flagsp ATTRIBUTE_UNUSED,
11016 if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
11020 return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
11024 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11026 ppc_elf_final_write_processing(abfd, linker);
11027 elf_vxworks_final_write_processing(abfd, linker);
11030 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
11032 #undef elf_backend_want_plt_sym
11033 #define elf_backend_want_plt_sym 1
11034 #undef elf_backend_want_got_plt
11035 #define elf_backend_want_got_plt 1
11036 #undef elf_backend_got_symbol_offset
11037 #define elf_backend_got_symbol_offset 0
11038 #undef elf_backend_plt_not_loaded
11039 #define elf_backend_plt_not_loaded 0
11040 #undef elf_backend_plt_readonly
11041 #define elf_backend_plt_readonly 1
11042 #undef elf_backend_got_header_size
11043 #define elf_backend_got_header_size 12
11044 #undef elf_backend_dtrel_excludes_plt
11045 #define elf_backend_dtrel_excludes_plt 1
11047 #undef bfd_elf32_get_synthetic_symtab
11049 #undef bfd_elf32_bfd_link_hash_table_create
11050 #define bfd_elf32_bfd_link_hash_table_create \
11051 ppc_elf_vxworks_link_hash_table_create
11052 #undef elf_backend_add_symbol_hook
11053 #define elf_backend_add_symbol_hook \
11054 ppc_elf_vxworks_add_symbol_hook
11055 #undef elf_backend_link_output_symbol_hook
11056 #define elf_backend_link_output_symbol_hook \
11057 elf_vxworks_link_output_symbol_hook
11058 #undef elf_backend_final_write_processing
11059 #define elf_backend_final_write_processing \
11060 ppc_elf_vxworks_final_write_processing
11061 #undef elf_backend_get_sec_type_attr
11062 #define elf_backend_get_sec_type_attr \
11063 ppc_elf_vxworks_get_sec_type_attr
11064 #undef elf_backend_emit_relocs
11065 #define elf_backend_emit_relocs \
11066 elf_vxworks_emit_relocs
11069 #define elf32_bed ppc_elf_vxworks_bed
11070 #undef elf_backend_post_process_headers
11072 #include "elf32-target.h"