1 /* PowerPC-specific support for 32-bit ELF
2 Copyright (C) 1994-2017 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the
19 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
35 #include "elf32-ppc.h"
36 #include "elf-vxworks.h"
38 #include "opcode/ppc.h"
40 typedef enum split16_format_type
47 /* RELA relocations are used here. */
49 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc_elf_unhandled_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 /* Branch prediction bit for branch taken relocs. */
55 #define BRANCH_PREDICT_BIT 0x200000
56 /* Mask to set RA in memory instructions. */
57 #define RA_REGISTER_MASK 0x001f0000
58 /* Value to shift register by to insert RA. */
59 #define RA_REGISTER_SHIFT 16
61 /* The name of the dynamic interpreter. This is put in the .interp
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
65 /* For old-style PLT. */
66 /* The number of single-slot PLT entries (the rest use two slots). */
67 #define PLT_NUM_SINGLE_ENTRIES 8192
69 /* For new-style .glink and .plt. */
70 #define GLINK_PLTRESOLVE 16*4
71 #define GLINK_ENTRY_SIZE 4*4
72 #define TLS_GET_ADDR_GLINK_SIZE 12*4
74 /* VxWorks uses its own plt layout, filled in by the static linker. */
76 /* The standard VxWorks PLT entry. */
77 #define VXWORKS_PLT_ENTRY_SIZE 32
78 static const bfd_vma ppc_elf_vxworks_plt_entry
79 [VXWORKS_PLT_ENTRY_SIZE / 4] =
81 0x3d800000, /* lis r12,0 */
82 0x818c0000, /* lwz r12,0(r12) */
83 0x7d8903a6, /* mtctr r12 */
84 0x4e800420, /* bctr */
85 0x39600000, /* li r11,0 */
86 0x48000000, /* b 14 <.PLT0resolve+0x4> */
90 static const bfd_vma ppc_elf_vxworks_pic_plt_entry
91 [VXWORKS_PLT_ENTRY_SIZE / 4] =
93 0x3d9e0000, /* addis r12,r30,0 */
94 0x818c0000, /* lwz r12,0(r12) */
95 0x7d8903a6, /* mtctr r12 */
96 0x4e800420, /* bctr */
97 0x39600000, /* li r11,0 */
98 0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
100 0x60000000, /* nop */
103 /* The initial VxWorks PLT entry. */
104 #define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
105 static const bfd_vma ppc_elf_vxworks_plt0_entry
106 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
108 0x3d800000, /* lis r12,0 */
109 0x398c0000, /* addi r12,r12,0 */
110 0x800c0008, /* lwz r0,8(r12) */
111 0x7c0903a6, /* mtctr r0 */
112 0x818c0004, /* lwz r12,4(r12) */
113 0x4e800420, /* bctr */
114 0x60000000, /* nop */
115 0x60000000, /* nop */
117 static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
118 [VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
120 0x819e0008, /* lwz r12,8(r30) */
121 0x7d8903a6, /* mtctr r12 */
122 0x819e0004, /* lwz r12,4(r30) */
123 0x4e800420, /* bctr */
124 0x60000000, /* nop */
125 0x60000000, /* nop */
126 0x60000000, /* nop */
127 0x60000000, /* nop */
130 /* For executables, we have some additional relocations in
131 .rela.plt.unloaded, for the kernel loader. */
133 /* The number of non-JMP_SLOT relocations per PLT0 slot. */
134 #define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
135 /* The number of relocations in the PLTResolve slot. */
136 #define VXWORKS_PLTRESOLVE_RELOCS 2
137 /* The number of relocations in the PLTResolve slot when creating
139 #define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
141 /* Some instructions. */
142 #define ADDIS_11_11 0x3d6b0000
143 #define ADDIS_11_30 0x3d7e0000
144 #define ADDIS_12_12 0x3d8c0000
145 #define ADDI_11_11 0x396b0000
146 #define ADD_0_11_11 0x7c0b5a14
147 #define ADD_3_12_2 0x7c6c1214
148 #define ADD_11_0_11 0x7d605a14
150 #define BA 0x48000002
151 #define BCL_20_31 0x429f0005
152 #define BCTR 0x4e800420
153 #define BEQLR 0x4d820020
154 #define CMPWI_11_0 0x2c0b0000
155 #define LIS_11 0x3d600000
156 #define LIS_12 0x3d800000
157 #define LWZU_0_12 0x840c0000
158 #define LWZ_0_12 0x800c0000
159 #define LWZ_11_3 0x81630000
160 #define LWZ_11_11 0x816b0000
161 #define LWZ_11_30 0x817e0000
162 #define LWZ_12_3 0x81830000
163 #define LWZ_12_12 0x818c0000
164 #define MR_0_3 0x7c601b78
165 #define MR_3_0 0x7c030378
166 #define MFLR_0 0x7c0802a6
167 #define MFLR_12 0x7d8802a6
168 #define MTCTR_0 0x7c0903a6
169 #define MTCTR_11 0x7d6903a6
170 #define MTLR_0 0x7c0803a6
171 #define NOP 0x60000000
172 #define SUB_11_11_12 0x7d6c5850
174 /* Offset of tp and dtp pointers from start of TLS block. */
175 #define TP_OFFSET 0x7000
176 #define DTP_OFFSET 0x8000
178 /* The value of a defined global symbol. */
179 #define SYM_VAL(SYM) \
180 ((SYM)->root.u.def.section->output_section->vma \
181 + (SYM)->root.u.def.section->output_offset \
182 + (SYM)->root.u.def.value)
184 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
186 static reloc_howto_type ppc_elf_howto_raw[] = {
187 /* This reloc does nothing. */
188 HOWTO (R_PPC_NONE, /* type */
190 3, /* size (0 = byte, 1 = short, 2 = long) */
192 FALSE, /* pc_relative */
194 complain_overflow_dont, /* complain_on_overflow */
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_NONE", /* name */
197 FALSE, /* partial_inplace */
200 FALSE), /* pcrel_offset */
202 /* A standard 32 bit relocation. */
203 HOWTO (R_PPC_ADDR32, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE, /* pc_relative */
209 complain_overflow_dont, /* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR32", /* name */
212 FALSE, /* partial_inplace */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
217 /* An absolute 26 bit branch; the lower two bits must be zero.
218 FIXME: we don't check that, we just clear them. */
219 HOWTO (R_PPC_ADDR24, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE, /* pc_relative */
225 complain_overflow_signed, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC_ADDR24", /* name */
228 FALSE, /* partial_inplace */
230 0x3fffffc, /* dst_mask */
231 FALSE), /* pcrel_offset */
233 /* A standard 16 bit relocation. */
234 HOWTO (R_PPC_ADDR16, /* type */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
238 FALSE, /* pc_relative */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC_ADDR16", /* name */
243 FALSE, /* partial_inplace */
245 0xffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
248 /* A 16 bit relocation without overflow. */
249 HOWTO (R_PPC_ADDR16_LO, /* type */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
253 FALSE, /* pc_relative */
255 complain_overflow_dont,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC_ADDR16_LO", /* name */
258 FALSE, /* partial_inplace */
260 0xffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
263 /* The high order 16 bits of an address. */
264 HOWTO (R_PPC_ADDR16_HI, /* type */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
268 FALSE, /* pc_relative */
270 complain_overflow_dont, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC_ADDR16_HI", /* name */
273 FALSE, /* partial_inplace */
275 0xffff, /* dst_mask */
276 FALSE), /* pcrel_offset */
278 /* The high order 16 bits of an address, plus 1 if the contents of
279 the low 16 bits, treated as a signed number, is negative. */
280 HOWTO (R_PPC_ADDR16_HA, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE, /* pc_relative */
286 complain_overflow_dont, /* complain_on_overflow */
287 ppc_elf_addr16_ha_reloc, /* special_function */
288 "R_PPC_ADDR16_HA", /* name */
289 FALSE, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
294 /* An absolute 16 bit branch; the lower two bits must be zero.
295 FIXME: we don't check that, we just clear them. */
296 HOWTO (R_PPC_ADDR14, /* type */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_signed, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC_ADDR14", /* name */
305 FALSE, /* partial_inplace */
307 0xfffc, /* dst_mask */
308 FALSE), /* pcrel_offset */
310 /* An absolute 16 bit branch, for which bit 10 should be set to
311 indicate that the branch is expected to be taken. The lower two
312 bits must be zero. */
313 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_signed, /* complain_on_overflow */
320 bfd_elf_generic_reloc, /* special_function */
321 "R_PPC_ADDR14_BRTAKEN",/* name */
322 FALSE, /* partial_inplace */
324 0xfffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is not expected to be taken. The lower
329 two bits must be zero. */
330 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE, /* pc_relative */
336 complain_overflow_signed, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_ADDR14_BRNTAKEN",/* name */
339 FALSE, /* partial_inplace */
341 0xfffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
344 /* A relative 26 bit branch; the lower two bits must be zero. */
345 HOWTO (R_PPC_REL24, /* type */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
349 TRUE, /* pc_relative */
351 complain_overflow_signed, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC_REL24", /* name */
354 FALSE, /* partial_inplace */
356 0x3fffffc, /* dst_mask */
357 TRUE), /* pcrel_offset */
359 /* A relative 16 bit branch; the lower two bits must be zero. */
360 HOWTO (R_PPC_REL14, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 TRUE, /* pc_relative */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_PPC_REL14", /* name */
369 FALSE, /* partial_inplace */
371 0xfffc, /* dst_mask */
372 TRUE), /* pcrel_offset */
374 /* A relative 16 bit branch. Bit 10 should be set to indicate that
375 the branch is expected to be taken. The lower two bits must be
377 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC_REL14_BRTAKEN", /* name */
386 FALSE, /* partial_inplace */
388 0xfffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is not expected to be taken. The lower two bits must
394 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE, /* pc_relative */
400 complain_overflow_signed, /* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_PPC_REL14_BRNTAKEN",/* name */
403 FALSE, /* partial_inplace */
405 0xfffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
408 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
410 HOWTO (R_PPC_GOT16, /* type */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
414 FALSE, /* pc_relative */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc_elf_unhandled_reloc, /* special_function */
418 "R_PPC_GOT16", /* name */
419 FALSE, /* partial_inplace */
421 0xffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
424 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
426 HOWTO (R_PPC_GOT16_LO, /* type */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
430 FALSE, /* pc_relative */
432 complain_overflow_dont, /* complain_on_overflow */
433 ppc_elf_unhandled_reloc, /* special_function */
434 "R_PPC_GOT16_LO", /* name */
435 FALSE, /* partial_inplace */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
440 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
442 HOWTO (R_PPC_GOT16_HI, /* type */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
446 FALSE, /* pc_relative */
448 complain_overflow_dont, /* complain_on_overflow */
449 ppc_elf_unhandled_reloc, /* special_function */
450 "R_PPC_GOT16_HI", /* name */
451 FALSE, /* partial_inplace */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
456 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
458 HOWTO (R_PPC_GOT16_HA, /* type */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
462 FALSE, /* pc_relative */
464 complain_overflow_dont, /* complain_on_overflow */
465 ppc_elf_unhandled_reloc, /* special_function */
466 "R_PPC_GOT16_HA", /* name */
467 FALSE, /* partial_inplace */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
472 /* Like R_PPC_REL24, but referring to the procedure linkage table
473 entry for the symbol. */
474 HOWTO (R_PPC_PLTREL24, /* type */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
478 TRUE, /* pc_relative */
480 complain_overflow_signed, /* complain_on_overflow */
481 ppc_elf_unhandled_reloc, /* special_function */
482 "R_PPC_PLTREL24", /* name */
483 FALSE, /* partial_inplace */
485 0x3fffffc, /* dst_mask */
486 TRUE), /* pcrel_offset */
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC_COPY, /* type */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
497 FALSE, /* pc_relative */
499 complain_overflow_dont, /* complain_on_overflow */
500 ppc_elf_unhandled_reloc, /* special_function */
501 "R_PPC_COPY", /* name */
502 FALSE, /* partial_inplace */
505 FALSE), /* pcrel_offset */
507 /* Like R_PPC_ADDR32, but used when setting global offset table
509 HOWTO (R_PPC_GLOB_DAT, /* type */
511 2, /* size (0 = byte, 1 = short, 2 = long) */
513 FALSE, /* pc_relative */
515 complain_overflow_dont, /* complain_on_overflow */
516 ppc_elf_unhandled_reloc, /* special_function */
517 "R_PPC_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
520 0xffffffff, /* dst_mask */
521 FALSE), /* pcrel_offset */
523 /* Marks a procedure linkage table entry for a symbol. */
524 HOWTO (R_PPC_JMP_SLOT, /* type */
526 2, /* size (0 = byte, 1 = short, 2 = long) */
528 FALSE, /* pc_relative */
530 complain_overflow_dont, /* complain_on_overflow */
531 ppc_elf_unhandled_reloc, /* special_function */
532 "R_PPC_JMP_SLOT", /* name */
533 FALSE, /* partial_inplace */
536 FALSE), /* pcrel_offset */
538 /* Used only by the dynamic linker. When the object is run, this
539 longword is set to the load address of the object, plus the
541 HOWTO (R_PPC_RELATIVE, /* type */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
545 FALSE, /* pc_relative */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_PPC_RELATIVE", /* name */
550 FALSE, /* partial_inplace */
552 0xffffffff, /* dst_mask */
553 FALSE), /* pcrel_offset */
555 /* Like R_PPC_REL24, but uses the value of the symbol within the
556 object rather than the final value. Normally used for
557 _GLOBAL_OFFSET_TABLE_. */
558 HOWTO (R_PPC_LOCAL24PC, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 TRUE, /* pc_relative */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC_LOCAL24PC", /* name */
567 FALSE, /* partial_inplace */
569 0x3fffffc, /* dst_mask */
570 TRUE), /* pcrel_offset */
572 /* Like R_PPC_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC_UADDR32, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE, /* pc_relative */
579 complain_overflow_dont, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC_UADDR32", /* name */
582 FALSE, /* partial_inplace */
584 0xffffffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
587 /* Like R_PPC_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC_UADDR16, /* type */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
592 FALSE, /* pc_relative */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_UADDR16", /* name */
597 FALSE, /* partial_inplace */
599 0xffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
602 /* 32-bit PC relative */
603 HOWTO (R_PPC_REL32, /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 TRUE, /* pc_relative */
609 complain_overflow_dont, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC_REL32", /* name */
612 FALSE, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 TRUE), /* pcrel_offset */
617 /* 32-bit relocation to the symbol's procedure linkage table.
618 FIXME: not supported. */
619 HOWTO (R_PPC_PLT32, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 FALSE, /* pc_relative */
625 complain_overflow_dont, /* complain_on_overflow */
626 ppc_elf_unhandled_reloc, /* special_function */
627 "R_PPC_PLT32", /* name */
628 FALSE, /* partial_inplace */
631 FALSE), /* pcrel_offset */
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 FIXME: not supported. */
635 HOWTO (R_PPC_PLTREL32, /* type */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
639 TRUE, /* pc_relative */
641 complain_overflow_dont, /* complain_on_overflow */
642 ppc_elf_unhandled_reloc, /* special_function */
643 "R_PPC_PLTREL32", /* name */
644 FALSE, /* partial_inplace */
647 TRUE), /* pcrel_offset */
649 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
651 HOWTO (R_PPC_PLT16_LO, /* type */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE, /* pc_relative */
657 complain_overflow_dont, /* complain_on_overflow */
658 ppc_elf_unhandled_reloc, /* special_function */
659 "R_PPC_PLT16_LO", /* name */
660 FALSE, /* partial_inplace */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
665 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
667 HOWTO (R_PPC_PLT16_HI, /* type */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_dont, /* complain_on_overflow */
674 ppc_elf_unhandled_reloc, /* special_function */
675 "R_PPC_PLT16_HI", /* name */
676 FALSE, /* partial_inplace */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
681 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
683 HOWTO (R_PPC_PLT16_HA, /* type */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE, /* pc_relative */
689 complain_overflow_dont, /* complain_on_overflow */
690 ppc_elf_unhandled_reloc, /* special_function */
691 "R_PPC_PLT16_HA", /* name */
692 FALSE, /* partial_inplace */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
697 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
699 HOWTO (R_PPC_SDAREL16, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE, /* pc_relative */
705 complain_overflow_signed, /* complain_on_overflow */
706 ppc_elf_unhandled_reloc, /* special_function */
707 "R_PPC_SDAREL16", /* name */
708 FALSE, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
713 /* 16-bit section relative relocation. */
714 HOWTO (R_PPC_SECTOFF, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE, /* pc_relative */
720 complain_overflow_signed, /* complain_on_overflow */
721 ppc_elf_unhandled_reloc, /* special_function */
722 "R_PPC_SECTOFF", /* name */
723 FALSE, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
728 /* 16-bit lower half section relative relocation. */
729 HOWTO (R_PPC_SECTOFF_LO, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 FALSE, /* pc_relative */
735 complain_overflow_dont, /* complain_on_overflow */
736 ppc_elf_unhandled_reloc, /* special_function */
737 "R_PPC_SECTOFF_LO", /* name */
738 FALSE, /* partial_inplace */
740 0xffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
743 /* 16-bit upper half section relative relocation. */
744 HOWTO (R_PPC_SECTOFF_HI, /* type */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE, /* pc_relative */
750 complain_overflow_dont, /* complain_on_overflow */
751 ppc_elf_unhandled_reloc, /* special_function */
752 "R_PPC_SECTOFF_HI", /* name */
753 FALSE, /* partial_inplace */
755 0xffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
758 /* 16-bit upper half adjusted section relative relocation. */
759 HOWTO (R_PPC_SECTOFF_HA, /* type */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
763 FALSE, /* pc_relative */
765 complain_overflow_dont, /* complain_on_overflow */
766 ppc_elf_unhandled_reloc, /* special_function */
767 "R_PPC_SECTOFF_HA", /* name */
768 FALSE, /* partial_inplace */
770 0xffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
773 /* Marker relocs for TLS. */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE, /* pc_relative */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC_TLS", /* name */
783 FALSE, /* partial_inplace */
786 FALSE), /* pcrel_offset */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
792 FALSE, /* pc_relative */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_TLSGD", /* name */
797 FALSE, /* partial_inplace */
800 FALSE), /* pcrel_offset */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
806 FALSE, /* pc_relative */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC_TLSLD", /* name */
811 FALSE, /* partial_inplace */
814 FALSE), /* pcrel_offset */
816 /* Computes the load module index of the load module that contains the
817 definition of its TLS sym. */
818 HOWTO (R_PPC_DTPMOD32,
820 2, /* size (0 = byte, 1 = short, 2 = long) */
822 FALSE, /* pc_relative */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc_elf_unhandled_reloc, /* special_function */
826 "R_PPC_DTPMOD32", /* name */
827 FALSE, /* partial_inplace */
829 0xffffffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
832 /* Computes a dtv-relative displacement, the difference between the value
833 of sym+add and the base address of the thread-local storage block that
834 contains the definition of sym, minus 0x8000. */
835 HOWTO (R_PPC_DTPREL32,
837 2, /* size (0 = byte, 1 = short, 2 = long) */
839 FALSE, /* pc_relative */
841 complain_overflow_dont, /* complain_on_overflow */
842 ppc_elf_unhandled_reloc, /* special_function */
843 "R_PPC_DTPREL32", /* name */
844 FALSE, /* partial_inplace */
846 0xffffffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
849 /* A 16 bit dtprel reloc. */
850 HOWTO (R_PPC_DTPREL16,
852 1, /* size (0 = byte, 1 = short, 2 = long) */
854 FALSE, /* pc_relative */
856 complain_overflow_signed, /* complain_on_overflow */
857 ppc_elf_unhandled_reloc, /* special_function */
858 "R_PPC_DTPREL16", /* name */
859 FALSE, /* partial_inplace */
861 0xffff, /* dst_mask */
862 FALSE), /* pcrel_offset */
864 /* Like DTPREL16, but no overflow. */
865 HOWTO (R_PPC_DTPREL16_LO,
867 1, /* size (0 = byte, 1 = short, 2 = long) */
869 FALSE, /* pc_relative */
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc_elf_unhandled_reloc, /* special_function */
873 "R_PPC_DTPREL16_LO", /* name */
874 FALSE, /* partial_inplace */
876 0xffff, /* dst_mask */
877 FALSE), /* pcrel_offset */
879 /* Like DTPREL16_LO, but next higher group of 16 bits. */
880 HOWTO (R_PPC_DTPREL16_HI,
882 1, /* size (0 = byte, 1 = short, 2 = long) */
884 FALSE, /* pc_relative */
886 complain_overflow_dont, /* complain_on_overflow */
887 ppc_elf_unhandled_reloc, /* special_function */
888 "R_PPC_DTPREL16_HI", /* name */
889 FALSE, /* partial_inplace */
891 0xffff, /* dst_mask */
892 FALSE), /* pcrel_offset */
894 /* Like DTPREL16_HI, but adjust for low 16 bits. */
895 HOWTO (R_PPC_DTPREL16_HA,
897 1, /* size (0 = byte, 1 = short, 2 = long) */
899 FALSE, /* pc_relative */
901 complain_overflow_dont, /* complain_on_overflow */
902 ppc_elf_unhandled_reloc, /* special_function */
903 "R_PPC_DTPREL16_HA", /* name */
904 FALSE, /* partial_inplace */
906 0xffff, /* dst_mask */
907 FALSE), /* pcrel_offset */
909 /* Computes a tp-relative displacement, the difference between the value of
910 sym+add and the value of the thread pointer (r13). */
911 HOWTO (R_PPC_TPREL32,
913 2, /* size (0 = byte, 1 = short, 2 = long) */
915 FALSE, /* pc_relative */
917 complain_overflow_dont, /* complain_on_overflow */
918 ppc_elf_unhandled_reloc, /* special_function */
919 "R_PPC_TPREL32", /* name */
920 FALSE, /* partial_inplace */
922 0xffffffff, /* dst_mask */
923 FALSE), /* pcrel_offset */
925 /* A 16 bit tprel reloc. */
926 HOWTO (R_PPC_TPREL16,
928 1, /* size (0 = byte, 1 = short, 2 = long) */
930 FALSE, /* pc_relative */
932 complain_overflow_signed, /* complain_on_overflow */
933 ppc_elf_unhandled_reloc, /* special_function */
934 "R_PPC_TPREL16", /* name */
935 FALSE, /* partial_inplace */
937 0xffff, /* dst_mask */
938 FALSE), /* pcrel_offset */
940 /* Like TPREL16, but no overflow. */
941 HOWTO (R_PPC_TPREL16_LO,
943 1, /* size (0 = byte, 1 = short, 2 = long) */
945 FALSE, /* pc_relative */
947 complain_overflow_dont, /* complain_on_overflow */
948 ppc_elf_unhandled_reloc, /* special_function */
949 "R_PPC_TPREL16_LO", /* name */
950 FALSE, /* partial_inplace */
952 0xffff, /* dst_mask */
953 FALSE), /* pcrel_offset */
955 /* Like TPREL16_LO, but next higher group of 16 bits. */
956 HOWTO (R_PPC_TPREL16_HI,
958 1, /* size (0 = byte, 1 = short, 2 = long) */
960 FALSE, /* pc_relative */
962 complain_overflow_dont, /* complain_on_overflow */
963 ppc_elf_unhandled_reloc, /* special_function */
964 "R_PPC_TPREL16_HI", /* name */
965 FALSE, /* partial_inplace */
967 0xffff, /* dst_mask */
968 FALSE), /* pcrel_offset */
970 /* Like TPREL16_HI, but adjust for low 16 bits. */
971 HOWTO (R_PPC_TPREL16_HA,
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_dont, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_TPREL16_HA", /* name */
980 FALSE, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
986 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
987 to the first entry. */
988 HOWTO (R_PPC_GOT_TLSGD16,
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 FALSE, /* pc_relative */
994 complain_overflow_signed, /* complain_on_overflow */
995 ppc_elf_unhandled_reloc, /* special_function */
996 "R_PPC_GOT_TLSGD16", /* name */
997 FALSE, /* partial_inplace */
999 0xffff, /* dst_mask */
1000 FALSE), /* pcrel_offset */
1002 /* Like GOT_TLSGD16, but no overflow. */
1003 HOWTO (R_PPC_GOT_TLSGD16_LO,
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 FALSE, /* pc_relative */
1009 complain_overflow_dont, /* complain_on_overflow */
1010 ppc_elf_unhandled_reloc, /* special_function */
1011 "R_PPC_GOT_TLSGD16_LO", /* name */
1012 FALSE, /* partial_inplace */
1014 0xffff, /* dst_mask */
1015 FALSE), /* pcrel_offset */
1017 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1018 HOWTO (R_PPC_GOT_TLSGD16_HI,
1019 16, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 FALSE, /* pc_relative */
1024 complain_overflow_dont, /* complain_on_overflow */
1025 ppc_elf_unhandled_reloc, /* special_function */
1026 "R_PPC_GOT_TLSGD16_HI", /* name */
1027 FALSE, /* partial_inplace */
1029 0xffff, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1032 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1033 HOWTO (R_PPC_GOT_TLSGD16_HA,
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 FALSE, /* pc_relative */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc_elf_unhandled_reloc, /* special_function */
1041 "R_PPC_GOT_TLSGD16_HA", /* name */
1042 FALSE, /* partial_inplace */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1047 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1048 with values (sym+add)@dtpmod and zero, and computes the offset to the
1050 HOWTO (R_PPC_GOT_TLSLD16,
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 FALSE, /* pc_relative */
1056 complain_overflow_signed, /* complain_on_overflow */
1057 ppc_elf_unhandled_reloc, /* special_function */
1058 "R_PPC_GOT_TLSLD16", /* name */
1059 FALSE, /* partial_inplace */
1061 0xffff, /* dst_mask */
1062 FALSE), /* pcrel_offset */
1064 /* Like GOT_TLSLD16, but no overflow. */
1065 HOWTO (R_PPC_GOT_TLSLD16_LO,
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 FALSE, /* pc_relative */
1071 complain_overflow_dont, /* complain_on_overflow */
1072 ppc_elf_unhandled_reloc, /* special_function */
1073 "R_PPC_GOT_TLSLD16_LO", /* name */
1074 FALSE, /* partial_inplace */
1076 0xffff, /* dst_mask */
1077 FALSE), /* pcrel_offset */
1079 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1080 HOWTO (R_PPC_GOT_TLSLD16_HI,
1081 16, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 FALSE, /* pc_relative */
1086 complain_overflow_dont, /* complain_on_overflow */
1087 ppc_elf_unhandled_reloc, /* special_function */
1088 "R_PPC_GOT_TLSLD16_HI", /* name */
1089 FALSE, /* partial_inplace */
1091 0xffff, /* dst_mask */
1092 FALSE), /* pcrel_offset */
1094 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1095 HOWTO (R_PPC_GOT_TLSLD16_HA,
1096 16, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE, /* pc_relative */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 ppc_elf_unhandled_reloc, /* special_function */
1103 "R_PPC_GOT_TLSLD16_HA", /* name */
1104 FALSE, /* partial_inplace */
1106 0xffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1109 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1110 the offset to the entry. */
1111 HOWTO (R_PPC_GOT_DTPREL16,
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE, /* pc_relative */
1117 complain_overflow_signed, /* complain_on_overflow */
1118 ppc_elf_unhandled_reloc, /* special_function */
1119 "R_PPC_GOT_DTPREL16", /* name */
1120 FALSE, /* partial_inplace */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1125 /* Like GOT_DTPREL16, but no overflow. */
1126 HOWTO (R_PPC_GOT_DTPREL16_LO,
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE, /* pc_relative */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc_elf_unhandled_reloc, /* special_function */
1134 "R_PPC_GOT_DTPREL16_LO", /* name */
1135 FALSE, /* partial_inplace */
1137 0xffff, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1140 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1141 HOWTO (R_PPC_GOT_DTPREL16_HI,
1142 16, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 FALSE, /* pc_relative */
1147 complain_overflow_dont, /* complain_on_overflow */
1148 ppc_elf_unhandled_reloc, /* special_function */
1149 "R_PPC_GOT_DTPREL16_HI", /* name */
1150 FALSE, /* partial_inplace */
1152 0xffff, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1155 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1156 HOWTO (R_PPC_GOT_DTPREL16_HA,
1157 16, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 FALSE, /* pc_relative */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc_elf_unhandled_reloc, /* special_function */
1164 "R_PPC_GOT_DTPREL16_HA", /* name */
1165 FALSE, /* partial_inplace */
1167 0xffff, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1170 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1171 offset to the entry. */
1172 HOWTO (R_PPC_GOT_TPREL16,
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 FALSE, /* pc_relative */
1178 complain_overflow_signed, /* complain_on_overflow */
1179 ppc_elf_unhandled_reloc, /* special_function */
1180 "R_PPC_GOT_TPREL16", /* name */
1181 FALSE, /* partial_inplace */
1183 0xffff, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1186 /* Like GOT_TPREL16, but no overflow. */
1187 HOWTO (R_PPC_GOT_TPREL16_LO,
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1191 FALSE, /* pc_relative */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 ppc_elf_unhandled_reloc, /* special_function */
1195 "R_PPC_GOT_TPREL16_LO", /* name */
1196 FALSE, /* partial_inplace */
1198 0xffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1201 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1202 HOWTO (R_PPC_GOT_TPREL16_HI,
1203 16, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE, /* pc_relative */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc_elf_unhandled_reloc, /* special_function */
1210 "R_PPC_GOT_TPREL16_HI", /* name */
1211 FALSE, /* partial_inplace */
1213 0xffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1216 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1217 HOWTO (R_PPC_GOT_TPREL16_HA,
1218 16, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 FALSE, /* pc_relative */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 ppc_elf_unhandled_reloc, /* special_function */
1225 "R_PPC_GOT_TPREL16_HA", /* name */
1226 FALSE, /* partial_inplace */
1228 0xffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1231 /* The remaining relocs are from the Embedded ELF ABI, and are not
1232 in the SVR4 ELF ABI. */
1234 /* 32 bit value resulting from the addend minus the symbol. */
1235 HOWTO (R_PPC_EMB_NADDR32, /* type */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 FALSE, /* pc_relative */
1241 complain_overflow_dont, /* complain_on_overflow */
1242 ppc_elf_unhandled_reloc, /* special_function */
1243 "R_PPC_EMB_NADDR32", /* name */
1244 FALSE, /* partial_inplace */
1246 0xffffffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1249 /* 16 bit value resulting from the addend minus the symbol. */
1250 HOWTO (R_PPC_EMB_NADDR16, /* type */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1254 FALSE, /* pc_relative */
1256 complain_overflow_signed, /* complain_on_overflow */
1257 ppc_elf_unhandled_reloc, /* special_function */
1258 "R_PPC_EMB_NADDR16", /* name */
1259 FALSE, /* partial_inplace */
1261 0xffff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1264 /* 16 bit value resulting from the addend minus the symbol. */
1265 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1267 1, /* size (0 = byte, 1 = short, 2 = long) */
1269 FALSE, /* pc_relative */
1271 complain_overflow_dont,/* complain_on_overflow */
1272 ppc_elf_unhandled_reloc, /* special_function */
1273 "R_PPC_EMB_ADDR16_LO", /* name */
1274 FALSE, /* partial_inplace */
1276 0xffff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1279 /* The high order 16 bits of the addend minus the symbol. */
1280 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1281 16, /* rightshift */
1282 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE, /* pc_relative */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 ppc_elf_unhandled_reloc, /* special_function */
1288 "R_PPC_EMB_NADDR16_HI", /* name */
1289 FALSE, /* partial_inplace */
1291 0xffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1294 /* The high order 16 bits of the result of the addend minus the address,
1295 plus 1 if the contents of the low 16 bits, treated as a signed number,
1297 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1298 16, /* rightshift */
1299 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_dont, /* complain_on_overflow */
1304 ppc_elf_unhandled_reloc, /* special_function */
1305 "R_PPC_EMB_NADDR16_HA", /* name */
1306 FALSE, /* partial_inplace */
1308 0xffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1311 /* 16 bit value resulting from allocating a 4 byte word to hold an
1312 address in the .sdata section, and returning the offset from
1313 _SDA_BASE_ for that relocation. */
1314 HOWTO (R_PPC_EMB_SDAI16, /* type */
1316 1, /* size (0 = byte, 1 = short, 2 = long) */
1318 FALSE, /* pc_relative */
1320 complain_overflow_signed, /* complain_on_overflow */
1321 ppc_elf_unhandled_reloc, /* special_function */
1322 "R_PPC_EMB_SDAI16", /* name */
1323 FALSE, /* partial_inplace */
1325 0xffff, /* dst_mask */
1326 FALSE), /* pcrel_offset */
1328 /* 16 bit value resulting from allocating a 4 byte word to hold an
1329 address in the .sdata2 section, and returning the offset from
1330 _SDA2_BASE_ for that relocation. */
1331 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE, /* pc_relative */
1337 complain_overflow_signed, /* complain_on_overflow */
1338 ppc_elf_unhandled_reloc, /* special_function */
1339 "R_PPC_EMB_SDA2I16", /* name */
1340 FALSE, /* partial_inplace */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1345 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1346 small data items. */
1347 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE, /* pc_relative */
1353 complain_overflow_signed, /* complain_on_overflow */
1354 ppc_elf_unhandled_reloc, /* special_function */
1355 "R_PPC_EMB_SDA2REL", /* name */
1356 FALSE, /* partial_inplace */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1361 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1362 signed offset from the appropriate base, and filling in the register
1363 field with the appropriate register (0, 2, or 13). */
1364 HOWTO (R_PPC_EMB_SDA21, /* type */
1366 2, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE, /* pc_relative */
1370 complain_overflow_signed, /* complain_on_overflow */
1371 ppc_elf_unhandled_reloc, /* special_function */
1372 "R_PPC_EMB_SDA21", /* name */
1373 FALSE, /* partial_inplace */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1378 /* Relocation not handled: R_PPC_EMB_MRKREF */
1379 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1380 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1381 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1382 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1383 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1385 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1386 in the 16 bit signed offset from the appropriate base, and filling in the
1387 register field with the appropriate register (0, 2, or 13). */
1388 HOWTO (R_PPC_EMB_RELSDA, /* type */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE, /* pc_relative */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 ppc_elf_unhandled_reloc, /* special_function */
1396 "R_PPC_EMB_RELSDA", /* name */
1397 FALSE, /* partial_inplace */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1402 /* A relative 8 bit branch. */
1403 HOWTO (R_PPC_VLE_REL8, /* type */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 TRUE, /* pc_relative */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 "R_PPC_VLE_REL8", /* name */
1412 FALSE, /* partial_inplace */
1414 0xff, /* dst_mask */
1415 TRUE), /* pcrel_offset */
1417 /* A relative 15 bit branch. */
1418 HOWTO (R_PPC_VLE_REL15, /* type */
1420 2, /* size (0 = byte, 1 = short, 2 = long) */
1422 TRUE, /* pc_relative */
1424 complain_overflow_signed, /* complain_on_overflow */
1425 bfd_elf_generic_reloc, /* special_function */
1426 "R_PPC_VLE_REL15", /* name */
1427 FALSE, /* partial_inplace */
1429 0xfffe, /* dst_mask */
1430 TRUE), /* pcrel_offset */
1432 /* A relative 24 bit branch. */
1433 HOWTO (R_PPC_VLE_REL24, /* type */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1437 TRUE, /* pc_relative */
1439 complain_overflow_signed, /* complain_on_overflow */
1440 bfd_elf_generic_reloc, /* special_function */
1441 "R_PPC_VLE_REL24", /* name */
1442 FALSE, /* partial_inplace */
1444 0x1fffffe, /* dst_mask */
1445 TRUE), /* pcrel_offset */
1447 /* The 16 LSBS in split16a format. */
1448 HOWTO (R_PPC_VLE_LO16A, /* type */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
1452 FALSE, /* pc_relative */
1454 complain_overflow_dont, /* complain_on_overflow */
1455 ppc_elf_unhandled_reloc, /* special_function */
1456 "R_PPC_VLE_LO16A", /* name */
1457 FALSE, /* partial_inplace */
1459 0x1f07ff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1462 /* The 16 LSBS in split16d format. */
1463 HOWTO (R_PPC_VLE_LO16D, /* type */
1465 2, /* size (0 = byte, 1 = short, 2 = long) */
1467 FALSE, /* pc_relative */
1469 complain_overflow_dont, /* complain_on_overflow */
1470 ppc_elf_unhandled_reloc, /* special_function */
1471 "R_PPC_VLE_LO16D", /* name */
1472 FALSE, /* partial_inplace */
1474 0x3e007ff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1477 /* Bits 16-31 split16a format. */
1478 HOWTO (R_PPC_VLE_HI16A, /* type */
1479 16, /* rightshift */
1480 2, /* size (0 = byte, 1 = short, 2 = long) */
1482 FALSE, /* pc_relative */
1484 complain_overflow_dont, /* complain_on_overflow */
1485 ppc_elf_unhandled_reloc, /* special_function */
1486 "R_PPC_VLE_HI16A", /* name */
1487 FALSE, /* partial_inplace */
1489 0x1f07ff, /* dst_mask */
1490 FALSE), /* pcrel_offset */
1492 /* Bits 16-31 split16d format. */
1493 HOWTO (R_PPC_VLE_HI16D, /* type */
1494 16, /* rightshift */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1497 FALSE, /* pc_relative */
1499 complain_overflow_dont, /* complain_on_overflow */
1500 ppc_elf_unhandled_reloc, /* special_function */
1501 "R_PPC_VLE_HI16D", /* name */
1502 FALSE, /* partial_inplace */
1504 0x3e007ff, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1507 /* Bits 16-31 (High Adjusted) in split16a format. */
1508 HOWTO (R_PPC_VLE_HA16A, /* type */
1509 16, /* rightshift */
1510 2, /* size (0 = byte, 1 = short, 2 = long) */
1512 FALSE, /* pc_relative */
1514 complain_overflow_dont, /* complain_on_overflow */
1515 ppc_elf_unhandled_reloc, /* special_function */
1516 "R_PPC_VLE_HA16A", /* name */
1517 FALSE, /* partial_inplace */
1519 0x1f07ff, /* dst_mask */
1520 FALSE), /* pcrel_offset */
1522 /* Bits 16-31 (High Adjusted) in split16d format. */
1523 HOWTO (R_PPC_VLE_HA16D, /* type */
1524 16, /* rightshift */
1525 2, /* size (0 = byte, 1 = short, 2 = long) */
1527 FALSE, /* pc_relative */
1529 complain_overflow_dont, /* complain_on_overflow */
1530 ppc_elf_unhandled_reloc, /* special_function */
1531 "R_PPC_VLE_HA16D", /* name */
1532 FALSE, /* partial_inplace */
1534 0x3e007ff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1537 /* This reloc is like R_PPC_EMB_SDA21 but only applies to e_add16i
1538 instructions. If the register base is 0 then the linker changes
1539 the e_add16i to an e_li instruction. */
1540 HOWTO (R_PPC_VLE_SDA21, /* type */
1542 2, /* size (0 = byte, 1 = short, 2 = long) */
1544 FALSE, /* pc_relative */
1546 complain_overflow_signed, /* complain_on_overflow */
1547 ppc_elf_unhandled_reloc, /* special_function */
1548 "R_PPC_VLE_SDA21", /* name */
1549 FALSE, /* partial_inplace */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1554 /* Like R_PPC_VLE_SDA21 but ignore overflow. */
1555 HOWTO (R_PPC_VLE_SDA21_LO, /* type */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 FALSE, /* pc_relative */
1561 complain_overflow_dont, /* complain_on_overflow */
1562 ppc_elf_unhandled_reloc, /* special_function */
1563 "R_PPC_VLE_SDA21_LO", /* name */
1564 FALSE, /* partial_inplace */
1566 0xffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1569 /* The 16 LSBS relative to _SDA_BASE_ in split16a format. */
1570 HOWTO (R_PPC_VLE_SDAREL_LO16A,/* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE, /* pc_relative */
1576 complain_overflow_dont, /* complain_on_overflow */
1577 ppc_elf_unhandled_reloc, /* special_function */
1578 "R_PPC_VLE_SDAREL_LO16A", /* name */
1579 FALSE, /* partial_inplace */
1581 0x1f07ff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1584 /* The 16 LSBS relative to _SDA_BASE_ in split16d format. */
1585 HOWTO (R_PPC_VLE_SDAREL_LO16D, /* type */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1589 FALSE, /* pc_relative */
1591 complain_overflow_dont, /* complain_on_overflow */
1592 ppc_elf_unhandled_reloc, /* special_function */
1593 "R_PPC_VLE_SDAREL_LO16D", /* name */
1594 FALSE, /* partial_inplace */
1596 0x3e007ff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1599 /* Bits 16-31 relative to _SDA_BASE_ in split16a format. */
1600 HOWTO (R_PPC_VLE_SDAREL_HI16A, /* type */
1601 16, /* rightshift */
1602 2, /* size (0 = byte, 1 = short, 2 = long) */
1604 FALSE, /* pc_relative */
1606 complain_overflow_dont, /* complain_on_overflow */
1607 ppc_elf_unhandled_reloc, /* special_function */
1608 "R_PPC_VLE_SDAREL_HI16A", /* name */
1609 FALSE, /* partial_inplace */
1611 0x1f07ff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1614 /* Bits 16-31 relative to _SDA_BASE_ in split16d format. */
1615 HOWTO (R_PPC_VLE_SDAREL_HI16D, /* type */
1616 16, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1619 FALSE, /* pc_relative */
1621 complain_overflow_dont, /* complain_on_overflow */
1622 ppc_elf_unhandled_reloc, /* special_function */
1623 "R_PPC_VLE_SDAREL_HI16D", /* name */
1624 FALSE, /* partial_inplace */
1626 0x3e007ff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1629 /* Bits 16-31 (HA) relative to _SDA_BASE split16a format. */
1630 HOWTO (R_PPC_VLE_SDAREL_HA16A, /* type */
1631 16, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 FALSE, /* pc_relative */
1636 complain_overflow_dont, /* complain_on_overflow */
1637 ppc_elf_unhandled_reloc, /* special_function */
1638 "R_PPC_VLE_SDAREL_HA16A", /* name */
1639 FALSE, /* partial_inplace */
1641 0x1f07ff, /* dst_mask */
1642 FALSE), /* pcrel_offset */
1644 /* Bits 16-31 (HA) relative to _SDA_BASE split16d format. */
1645 HOWTO (R_PPC_VLE_SDAREL_HA16D, /* type */
1646 16, /* rightshift */
1647 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 FALSE, /* pc_relative */
1651 complain_overflow_dont, /* complain_on_overflow */
1652 ppc_elf_unhandled_reloc, /* special_function */
1653 "R_PPC_VLE_SDAREL_HA16D", /* name */
1654 FALSE, /* partial_inplace */
1656 0x3e007ff, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1659 /* e_li split20 format. */
1660 HOWTO (R_PPC_VLE_ADDR20, /* type */
1661 16, /* rightshift */
1662 2, /* size (0 = byte, 1 = short, 2 = long) */
1664 FALSE, /* pc_relative */
1666 complain_overflow_dont, /* complain_on_overflow */
1667 bfd_elf_generic_reloc, /* special_function */
1668 "R_PPC_VLE_ADDR20", /* name */
1669 FALSE, /* partial_inplace */
1671 0x1f07ff, /* dst_mask */
1672 FALSE), /* pcrel_offset */
1674 HOWTO (R_PPC_IRELATIVE, /* type */
1676 2, /* size (0 = byte, 1 = short, 2 = long) */
1678 FALSE, /* pc_relative */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 ppc_elf_unhandled_reloc, /* special_function */
1682 "R_PPC_IRELATIVE", /* name */
1683 FALSE, /* partial_inplace */
1685 0xffffffff, /* dst_mask */
1686 FALSE), /* pcrel_offset */
1688 /* A 16 bit relative relocation. */
1689 HOWTO (R_PPC_REL16, /* type */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1693 TRUE, /* pc_relative */
1695 complain_overflow_signed, /* complain_on_overflow */
1696 bfd_elf_generic_reloc, /* special_function */
1697 "R_PPC_REL16", /* name */
1698 FALSE, /* partial_inplace */
1700 0xffff, /* dst_mask */
1701 TRUE), /* pcrel_offset */
1703 /* A 16 bit relative relocation without overflow. */
1704 HOWTO (R_PPC_REL16_LO, /* type */
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_LO", /* name */
1713 FALSE, /* partial_inplace */
1715 0xffff, /* dst_mask */
1716 TRUE), /* pcrel_offset */
1718 /* The high order 16 bits of a relative address. */
1719 HOWTO (R_PPC_REL16_HI, /* type */
1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1723 TRUE, /* pc_relative */
1725 complain_overflow_dont, /* complain_on_overflow */
1726 bfd_elf_generic_reloc, /* special_function */
1727 "R_PPC_REL16_HI", /* name */
1728 FALSE, /* partial_inplace */
1730 0xffff, /* dst_mask */
1731 TRUE), /* pcrel_offset */
1733 /* The high order 16 bits of a relative address, plus 1 if the contents of
1734 the low 16 bits, treated as a signed number, is negative. */
1735 HOWTO (R_PPC_REL16_HA, /* type */
1736 16, /* rightshift */
1737 1, /* size (0 = byte, 1 = short, 2 = long) */
1739 TRUE, /* pc_relative */
1741 complain_overflow_dont, /* complain_on_overflow */
1742 ppc_elf_addr16_ha_reloc, /* special_function */
1743 "R_PPC_REL16_HA", /* name */
1744 FALSE, /* partial_inplace */
1746 0xffff, /* dst_mask */
1747 TRUE), /* pcrel_offset */
1749 /* Like R_PPC_REL16_HA but for split field in addpcis. */
1750 HOWTO (R_PPC_REL16DX_HA, /* type */
1751 16, /* rightshift */
1752 2, /* size (0 = byte, 1 = short, 2 = long) */
1754 TRUE, /* pc_relative */
1756 complain_overflow_signed, /* complain_on_overflow */
1757 ppc_elf_addr16_ha_reloc, /* special_function */
1758 "R_PPC_REL16DX_HA", /* name */
1759 FALSE, /* partial_inplace */
1761 0x1fffc1, /* dst_mask */
1762 TRUE), /* pcrel_offset */
1764 /* A split-field reloc for addpcis, non-relative (gas internal use only). */
1765 HOWTO (R_PPC_16DX_HA, /* type */
1766 16, /* rightshift */
1767 2, /* size (0 = byte, 1 = short, 2 = long) */
1769 FALSE, /* pc_relative */
1771 complain_overflow_signed, /* complain_on_overflow */
1772 ppc_elf_addr16_ha_reloc, /* special_function */
1773 "R_PPC_16DX_HA", /* name */
1774 FALSE, /* partial_inplace */
1776 0x1fffc1, /* dst_mask */
1777 FALSE), /* pcrel_offset */
1779 /* GNU extension to record C++ vtable hierarchy. */
1780 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1782 0, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE, /* pc_relative */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 NULL, /* special_function */
1788 "R_PPC_GNU_VTINHERIT", /* name */
1789 FALSE, /* partial_inplace */
1792 FALSE), /* pcrel_offset */
1794 /* GNU extension to record C++ vtable member usage. */
1795 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1797 0, /* size (0 = byte, 1 = short, 2 = long) */
1799 FALSE, /* pc_relative */
1801 complain_overflow_dont, /* complain_on_overflow */
1802 NULL, /* special_function */
1803 "R_PPC_GNU_VTENTRY", /* name */
1804 FALSE, /* partial_inplace */
1807 FALSE), /* pcrel_offset */
1809 /* Phony reloc to handle AIX style TOC entries. */
1810 HOWTO (R_PPC_TOC16, /* type */
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1814 FALSE, /* pc_relative */
1816 complain_overflow_signed, /* complain_on_overflow */
1817 ppc_elf_unhandled_reloc, /* special_function */
1818 "R_PPC_TOC16", /* name */
1819 FALSE, /* partial_inplace */
1821 0xffff, /* dst_mask */
1822 FALSE), /* pcrel_offset */
1825 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1828 ppc_elf_howto_init (void)
1830 unsigned int i, type;
1833 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1836 type = ppc_elf_howto_raw[i].type;
1837 if (type >= (sizeof (ppc_elf_howto_table)
1838 / sizeof (ppc_elf_howto_table[0])))
1840 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1844 static reloc_howto_type *
1845 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1846 bfd_reloc_code_real_type code)
1848 enum elf_ppc_reloc_type r;
1850 /* Initialize howto table if not already done. */
1851 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1852 ppc_elf_howto_init ();
1859 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1860 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1861 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1862 case BFD_RELOC_PPC64_ADDR16_DS:
1863 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1864 case BFD_RELOC_PPC64_ADDR16_LO_DS:
1865 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1866 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1867 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1868 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1869 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1870 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1871 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1872 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1873 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1874 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1875 case BFD_RELOC_PPC64_GOT16_DS:
1876 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1877 case BFD_RELOC_PPC64_GOT16_LO_DS:
1878 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1879 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1880 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1881 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1882 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1883 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1884 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1885 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1886 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1887 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1888 case BFD_RELOC_PPC64_PLT16_LO_DS:
1889 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1890 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1891 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1892 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1893 case BFD_RELOC_PPC64_SECTOFF_DS:
1894 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1895 case BFD_RELOC_PPC64_SECTOFF_LO_DS:
1896 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1897 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1898 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1899 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1900 case BFD_RELOC_PPC64_TOC16_DS:
1901 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1902 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1903 case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
1904 case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
1905 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1906 case BFD_RELOC_PPC64_TPREL16_DS:
1907 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1908 case BFD_RELOC_PPC64_TPREL16_LO_DS:
1909 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1910 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1911 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1912 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1913 case BFD_RELOC_PPC64_DTPREL16_DS:
1914 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1915 case BFD_RELOC_PPC64_DTPREL16_LO_DS:
1916 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1917 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1918 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1919 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1920 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1921 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1922 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1923 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1924 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1925 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1926 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1927 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1928 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1929 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1930 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1931 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1932 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1933 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1934 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1935 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1936 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1937 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1938 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1939 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1940 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1941 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1942 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1943 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1944 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1945 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1946 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1947 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1948 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1949 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1950 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1951 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1952 case BFD_RELOC_PPC_VLE_REL8: r = R_PPC_VLE_REL8; break;
1953 case BFD_RELOC_PPC_VLE_REL15: r = R_PPC_VLE_REL15; break;
1954 case BFD_RELOC_PPC_VLE_REL24: r = R_PPC_VLE_REL24; break;
1955 case BFD_RELOC_PPC_VLE_LO16A: r = R_PPC_VLE_LO16A; break;
1956 case BFD_RELOC_PPC_VLE_LO16D: r = R_PPC_VLE_LO16D; break;
1957 case BFD_RELOC_PPC_VLE_HI16A: r = R_PPC_VLE_HI16A; break;
1958 case BFD_RELOC_PPC_VLE_HI16D: r = R_PPC_VLE_HI16D; break;
1959 case BFD_RELOC_PPC_VLE_HA16A: r = R_PPC_VLE_HA16A; break;
1960 case BFD_RELOC_PPC_VLE_HA16D: r = R_PPC_VLE_HA16D; break;
1961 case BFD_RELOC_PPC_VLE_SDA21: r = R_PPC_VLE_SDA21; break;
1962 case BFD_RELOC_PPC_VLE_SDA21_LO: r = R_PPC_VLE_SDA21_LO; break;
1963 case BFD_RELOC_PPC_VLE_SDAREL_LO16A:
1964 r = R_PPC_VLE_SDAREL_LO16A;
1966 case BFD_RELOC_PPC_VLE_SDAREL_LO16D:
1967 r = R_PPC_VLE_SDAREL_LO16D;
1969 case BFD_RELOC_PPC_VLE_SDAREL_HI16A:
1970 r = R_PPC_VLE_SDAREL_HI16A;
1972 case BFD_RELOC_PPC_VLE_SDAREL_HI16D:
1973 r = R_PPC_VLE_SDAREL_HI16D;
1975 case BFD_RELOC_PPC_VLE_SDAREL_HA16A:
1976 r = R_PPC_VLE_SDAREL_HA16A;
1978 case BFD_RELOC_PPC_VLE_SDAREL_HA16D:
1979 r = R_PPC_VLE_SDAREL_HA16D;
1981 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1982 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1983 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1984 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1985 case BFD_RELOC_PPC_16DX_HA: r = R_PPC_16DX_HA; break;
1986 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC_REL16DX_HA; break;
1987 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1988 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1991 return ppc_elf_howto_table[r];
1994 static reloc_howto_type *
1995 ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2001 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
2003 if (ppc_elf_howto_raw[i].name != NULL
2004 && strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
2005 return &ppc_elf_howto_raw[i];
2010 /* Set the howto pointer for a PowerPC ELF reloc. */
2013 ppc_elf_info_to_howto (bfd *abfd,
2015 Elf_Internal_Rela *dst)
2017 unsigned int r_type;
2019 /* Initialize howto table if not already done. */
2020 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2021 ppc_elf_howto_init ();
2023 r_type = ELF32_R_TYPE (dst->r_info);
2024 if (r_type >= R_PPC_max)
2026 /* xgettext:c-format */
2027 _bfd_error_handler (_("%B: unrecognised PPC reloc number: %d"),
2029 bfd_set_error (bfd_error_bad_value);
2030 r_type = R_PPC_NONE;
2032 cache_ptr->howto = ppc_elf_howto_table[r_type];
2034 /* Just because the above assert didn't trigger doesn't mean that
2035 ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
2036 if (!cache_ptr->howto)
2038 /* xgettext:c-format */
2039 _bfd_error_handler (_("%B: invalid relocation type %d"),
2041 bfd_set_error (bfd_error_bad_value);
2043 cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
2047 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
2049 static bfd_reloc_status_type
2050 ppc_elf_addr16_ha_reloc (bfd *abfd,
2051 arelent *reloc_entry,
2054 asection *input_section,
2056 char **error_message ATTRIBUTE_UNUSED)
2058 enum elf_ppc_reloc_type r_type;
2060 bfd_size_type octets;
2063 if (output_bfd != NULL)
2065 reloc_entry->address += input_section->output_offset;
2066 return bfd_reloc_ok;
2069 reloc_entry->addend += 0x8000;
2070 r_type = reloc_entry->howto->type;
2071 if (r_type != R_PPC_REL16DX_HA)
2072 return bfd_reloc_continue;
2075 if (!bfd_is_com_section (symbol->section))
2076 value = symbol->value;
2077 value += (reloc_entry->addend
2078 + symbol->section->output_offset
2079 + symbol->section->output_section->vma);
2080 value -= (reloc_entry->address
2081 + input_section->output_offset
2082 + input_section->output_section->vma);
2085 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2086 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2088 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2089 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2090 return bfd_reloc_ok;
2093 static bfd_reloc_status_type
2094 ppc_elf_unhandled_reloc (bfd *abfd,
2095 arelent *reloc_entry,
2098 asection *input_section,
2100 char **error_message)
2102 /* If this is a relocatable link (output_bfd test tells us), just
2103 call the generic function. Any adjustment will be done at final
2105 if (output_bfd != NULL)
2106 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2107 input_section, output_bfd, error_message);
2109 if (error_message != NULL)
2111 static char buf[60];
2112 sprintf (buf, _("generic linker can't handle %s"),
2113 reloc_entry->howto->name);
2114 *error_message = buf;
2116 return bfd_reloc_dangerous;
2119 /* Sections created by the linker. */
2121 typedef struct elf_linker_section
2123 /* Pointer to the bfd section. */
2127 /* Associated bss section name. */
2128 const char *bss_name;
2129 /* Associated symbol name. */
2130 const char *sym_name;
2131 /* Associated symbol. */
2132 struct elf_link_hash_entry *sym;
2133 } elf_linker_section_t;
2135 /* Linked list of allocated pointer entries. This hangs off of the
2136 symbol lists, and provides allows us to return different pointers,
2137 based on different addend's. */
2139 typedef struct elf_linker_section_pointers
2141 /* next allocated pointer for this symbol */
2142 struct elf_linker_section_pointers *next;
2143 /* offset of pointer from beginning of section */
2147 /* which linker section this is */
2148 elf_linker_section_t *lsect;
2149 } elf_linker_section_pointers_t;
2151 struct ppc_elf_obj_tdata
2153 struct elf_obj_tdata elf;
2155 /* A mapping from local symbols to offsets into the various linker
2156 sections added. This is index by the symbol index. */
2157 elf_linker_section_pointers_t **linker_section_pointers;
2159 /* Flags used to auto-detect plt type. */
2160 unsigned int makes_plt_call : 1;
2161 unsigned int has_rel16 : 1;
2164 #define ppc_elf_tdata(bfd) \
2165 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
2167 #define elf_local_ptr_offsets(bfd) \
2168 (ppc_elf_tdata (bfd)->linker_section_pointers)
2170 #define is_ppc_elf(bfd) \
2171 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2172 && elf_object_id (bfd) == PPC32_ELF_DATA)
2174 /* Override the generic function because we store some extras. */
2177 ppc_elf_mkobject (bfd *abfd)
2179 return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
2183 /* When defaulting arch/mach, decode apuinfo to find a better match. */
2186 _bfd_elf_ppc_set_arch (bfd *abfd)
2188 unsigned long mach = 0;
2190 unsigned char *contents;
2192 if (abfd->arch_info->bits_per_word == 32
2193 && bfd_big_endian (abfd))
2196 for (s = abfd->sections; s != NULL; s = s->next)
2197 if ((elf_section_data (s)->this_hdr.sh_flags & SHF_PPC_VLE) != 0)
2200 mach = bfd_mach_ppc_vle;
2205 s = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2206 if (s != NULL && bfd_malloc_and_get_section (abfd, s, &contents))
2208 unsigned int apuinfo_size = bfd_get_32 (abfd, contents + 4);
2211 for (i = 20; i < apuinfo_size + 20 && i + 4 <= s->size; i += 4)
2213 unsigned int val = bfd_get_32 (abfd, contents + i);
2216 case PPC_APUINFO_PMR:
2217 case PPC_APUINFO_RFMCI:
2219 mach = bfd_mach_ppc_titan;
2222 case PPC_APUINFO_ISEL:
2223 case PPC_APUINFO_CACHELCK:
2224 if (mach == bfd_mach_ppc_titan)
2225 mach = bfd_mach_ppc_e500mc;
2228 case PPC_APUINFO_SPE:
2229 case PPC_APUINFO_EFS:
2230 case PPC_APUINFO_BRLOCK:
2231 if (mach != bfd_mach_ppc_vle)
2232 mach = bfd_mach_ppc_e500;
2235 case PPC_APUINFO_VLE:
2236 mach = bfd_mach_ppc_vle;
2247 if (mach != 0 && mach != -1ul)
2249 const bfd_arch_info_type *arch;
2251 for (arch = abfd->arch_info->next; arch; arch = arch->next)
2252 if (arch->mach == mach)
2254 abfd->arch_info = arch;
2261 /* Fix bad default arch selected for a 32 bit input bfd when the
2262 default is 64 bit. Also select arch based on apuinfo. */
2265 ppc_elf_object_p (bfd *abfd)
2267 if (!abfd->arch_info->the_default)
2270 if (abfd->arch_info->bits_per_word == 64)
2272 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2274 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
2276 /* Relies on arch after 64 bit default being 32 bit default. */
2277 abfd->arch_info = abfd->arch_info->next;
2278 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
2281 return _bfd_elf_ppc_set_arch (abfd);
2284 /* Function to set whether a module needs the -mrelocatable bit set. */
2287 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
2289 BFD_ASSERT (!elf_flags_init (abfd)
2290 || elf_elfheader (abfd)->e_flags == flags);
2292 elf_elfheader (abfd)->e_flags = flags;
2293 elf_flags_init (abfd) = TRUE;
2297 /* Support for core dump NOTE sections. */
2300 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2305 switch (note->descsz)
2310 case 268: /* Linux/PPC. */
2312 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2315 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2324 /* Make a ".reg/999" section. */
2325 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2326 size, note->descpos + offset);
2330 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2332 switch (note->descsz)
2337 case 128: /* Linux/PPC elf_prpsinfo. */
2338 elf_tdata (abfd)->core->pid
2339 = bfd_get_32 (abfd, note->descdata + 16);
2340 elf_tdata (abfd)->core->program
2341 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2342 elf_tdata (abfd)->core->command
2343 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2346 /* Note that for some reason, a spurious space is tacked
2347 onto the end of the args in some (at least one anyway)
2348 implementations, so strip it off if it exists. */
2351 char *command = elf_tdata (abfd)->core->command;
2352 int n = strlen (command);
2354 if (0 < n && command[n - 1] == ' ')
2355 command[n - 1] = '\0';
2362 ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
2374 va_start (ap, note_type);
2375 memset (data, 0, sizeof (data));
2376 strncpy (data + 32, va_arg (ap, const char *), 16);
2377 strncpy (data + 48, va_arg (ap, const char *), 80);
2379 return elfcore_write_note (abfd, buf, bufsiz,
2380 "CORE", note_type, data, sizeof (data));
2391 va_start (ap, note_type);
2392 memset (data, 0, 72);
2393 pid = va_arg (ap, long);
2394 bfd_put_32 (abfd, pid, data + 24);
2395 cursig = va_arg (ap, int);
2396 bfd_put_16 (abfd, cursig, data + 12);
2397 greg = va_arg (ap, const void *);
2398 memcpy (data + 72, greg, 192);
2399 memset (data + 264, 0, 4);
2401 return elfcore_write_note (abfd, buf, bufsiz,
2402 "CORE", note_type, data, sizeof (data));
2408 ppc_elf_lookup_section_flags (char *flag_name)
2411 if (!strcmp (flag_name, "SHF_PPC_VLE"))
2417 /* Return address for Ith PLT stub in section PLT, for relocation REL
2418 or (bfd_vma) -1 if it should not be included. */
2421 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
2422 const asection *plt ATTRIBUTE_UNUSED,
2425 return rel->address;
2428 /* Handle a PowerPC specific section when reading an object file. This
2429 is called when bfd_section_from_shdr finds a section with an unknown
2433 ppc_elf_section_from_shdr (bfd *abfd,
2434 Elf_Internal_Shdr *hdr,
2441 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2444 newsect = hdr->bfd_section;
2445 flags = bfd_get_section_flags (abfd, newsect);
2446 if (hdr->sh_flags & SHF_EXCLUDE)
2447 flags |= SEC_EXCLUDE;
2449 if (hdr->sh_type == SHT_ORDERED)
2450 flags |= SEC_SORT_ENTRIES;
2452 bfd_set_section_flags (abfd, newsect, flags);
2456 /* Set up any other section flags and such that may be necessary. */
2459 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2460 Elf_Internal_Shdr *shdr,
2463 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2464 shdr->sh_type = SHT_ORDERED;
2469 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
2470 need to bump up the number of section headers. */
2473 ppc_elf_additional_program_headers (bfd *abfd,
2474 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2479 s = bfd_get_section_by_name (abfd, ".sbss2");
2480 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2483 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
2484 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
2490 /* Modify the segment map for VLE executables. */
2493 ppc_elf_modify_segment_map (bfd *abfd,
2494 struct bfd_link_info *info ATTRIBUTE_UNUSED)
2496 struct elf_segment_map *m;
2498 /* At this point in the link, output sections have already been sorted by
2499 LMA and assigned to segments. All that is left to do is to ensure
2500 there is no mixing of VLE & non-VLE sections in a text segment.
2501 If we find that case, we split the segment.
2502 We maintain the original output section order. */
2504 for (m = elf_seg_map (abfd); m != NULL; m = m->next)
2506 struct elf_segment_map *n;
2509 unsigned int p_flags;
2511 if (m->p_type != PT_LOAD || m->count == 0)
2514 for (p_flags = PF_R, j = 0; j != m->count; ++j)
2516 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2518 if ((m->sections[j]->flags & SEC_CODE) != 0)
2521 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2522 p_flags |= PF_PPC_VLE;
2527 while (++j != m->count)
2529 unsigned int p_flags1 = PF_R;
2531 if ((m->sections[j]->flags & SEC_READONLY) == 0)
2533 if ((m->sections[j]->flags & SEC_CODE) != 0)
2536 if ((elf_section_flags (m->sections[j]) & SHF_PPC_VLE) != 0)
2537 p_flags1 |= PF_PPC_VLE;
2538 if (((p_flags1 ^ p_flags) & PF_PPC_VLE) != 0)
2541 p_flags |= p_flags1;
2543 /* If we're splitting a segment which originally contained rw
2544 sections then those sections might now only be in one of the
2545 two parts. So always set p_flags if splitting, even if we
2546 are being called for objcopy with p_flags_valid set. */
2547 if (j != m->count || !m->p_flags_valid)
2549 m->p_flags_valid = 1;
2550 m->p_flags = p_flags;
2555 /* Sections 0..j-1 stay in this (current) segment,
2556 the remainder are put in a new segment.
2557 The scan resumes with the new segment. */
2559 amt = sizeof (struct elf_segment_map);
2560 amt += (m->count - j - 1) * sizeof (asection *);
2561 n = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
2565 n->p_type = PT_LOAD;
2566 n->count = m->count - j;
2567 for (k = 0; k < n->count; ++k)
2568 n->sections[k] = m->sections[j + k];
2570 m->p_size_valid = 0;
2578 /* Add extra PPC sections -- Note, for now, make .sbss2 and
2579 .PPC.EMB.sbss0 a normal section, and not a bss section so
2580 that the linker doesn't crater when trying to make more than
2583 static const struct bfd_elf_special_section ppc_elf_special_sections[] =
2585 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
2586 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2587 { STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
2588 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2589 { STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
2590 { STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
2591 { STRING_COMMA_LEN (APUINFO_SECTION_NAME), 0, SHT_NOTE, 0 },
2592 { STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
2593 { STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
2594 { NULL, 0, 0, 0, 0 }
2597 /* This is what we want for new plt/got. */
2598 static struct bfd_elf_special_section ppc_alt_plt =
2599 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
2601 static const struct bfd_elf_special_section *
2602 ppc_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2604 const struct bfd_elf_special_section *ssect;
2606 /* See if this is one of the special sections. */
2607 if (sec->name == NULL)
2610 ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
2614 if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
2615 ssect = &ppc_alt_plt;
2619 return _bfd_elf_get_sec_type_attr (abfd, sec);
2622 /* Very simple linked list structure for recording apuinfo values. */
2623 typedef struct apuinfo_list
2625 struct apuinfo_list *next;
2626 unsigned long value;
2630 static apuinfo_list *head;
2631 static bfd_boolean apuinfo_set;
2634 apuinfo_list_init (void)
2637 apuinfo_set = FALSE;
2641 apuinfo_list_add (unsigned long value)
2643 apuinfo_list *entry = head;
2645 while (entry != NULL)
2647 if (entry->value == value)
2649 entry = entry->next;
2652 entry = bfd_malloc (sizeof (* entry));
2656 entry->value = value;
2662 apuinfo_list_length (void)
2664 apuinfo_list *entry;
2665 unsigned long count;
2667 for (entry = head, count = 0;
2669 entry = entry->next)
2675 static inline unsigned long
2676 apuinfo_list_element (unsigned long number)
2678 apuinfo_list * entry;
2682 entry = entry->next)
2685 return entry ? entry->value : 0;
2689 apuinfo_list_finish (void)
2691 apuinfo_list *entry;
2693 for (entry = head; entry;)
2695 apuinfo_list *next = entry->next;
2703 /* Scan the input BFDs and create a linked list of
2704 the APUinfo values that will need to be emitted. */
2707 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
2711 char *buffer = NULL;
2712 bfd_size_type largest_input_size = 0;
2714 unsigned long length;
2715 const char *error_message = NULL;
2717 if (link_info == NULL)
2720 apuinfo_list_init ();
2722 /* Read in the input sections contents. */
2723 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link.next)
2725 unsigned long datum;
2727 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2731 /* xgettext:c-format */
2732 error_message = _("corrupt %s section in %B");
2733 length = asec->size;
2738 if (largest_input_size < asec->size)
2742 largest_input_size = asec->size;
2743 buffer = bfd_malloc (largest_input_size);
2748 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2749 || (bfd_bread (buffer, length, ibfd) != length))
2751 /* xgettext:c-format */
2752 error_message = _("unable to read in %s section from %B");
2756 /* Verify the contents of the header. Note - we have to
2757 extract the values this way in order to allow for a
2758 host whose endian-ness is different from the target. */
2759 datum = bfd_get_32 (ibfd, buffer);
2760 if (datum != sizeof APUINFO_LABEL)
2763 datum = bfd_get_32 (ibfd, buffer + 8);
2767 if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
2770 /* Get the number of bytes used for apuinfo entries. */
2771 datum = bfd_get_32 (ibfd, buffer + 4);
2772 if (datum + 20 != length)
2775 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2776 for (i = 0; i < datum; i += 4)
2777 apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
2780 error_message = NULL;
2784 /* Compute the size of the output section. */
2785 unsigned num_entries = apuinfo_list_length ();
2787 /* Set the output section size, if it exists. */
2788 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2790 if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
2793 /* xgettext:c-format */
2794 error_message = _("warning: unable to set size of %s section in %B");
2803 _bfd_error_handler (error_message, APUINFO_SECTION_NAME, ibfd);
2806 /* Prevent the output section from accumulating the input sections'
2807 contents. We have already stored this in our linked list structure. */
2810 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2811 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2813 bfd_byte *contents ATTRIBUTE_UNUSED)
2815 return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
2818 /* Finally we can generate the output section. */
2821 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2826 unsigned num_entries;
2827 bfd_size_type length;
2829 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2836 length = asec->size;
2840 buffer = bfd_malloc (length);
2844 (_("failed to allocate space for new APUinfo section."));
2848 /* Create the apuinfo header. */
2849 num_entries = apuinfo_list_length ();
2850 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2851 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2852 bfd_put_32 (abfd, 0x2, buffer + 8);
2853 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2856 for (i = 0; i < num_entries; i++)
2858 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2862 if (length != asec->size)
2863 _bfd_error_handler (_("failed to compute new APUinfo section."));
2865 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2866 _bfd_error_handler (_("failed to install new APUinfo section."));
2870 apuinfo_list_finish ();
2874 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
2876 bfd_byte buf[GLINK_ENTRY_SIZE];
2878 if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
2881 return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
2882 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
2883 && bfd_get_32 (abfd, buf + 8) == MTCTR_11
2884 && bfd_get_32 (abfd, buf + 12) == BCTR);
2888 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2890 bfd_vma vma = *(bfd_vma *) ptr;
2891 return ((section->flags & SEC_ALLOC) != 0
2892 && section->vma <= vma
2893 && vma < section->vma + section->size);
2897 ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2898 long dynsymcount, asymbol **dynsyms,
2901 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2902 asection *plt, *relplt, *dynamic, *glink;
2903 bfd_vma glink_vma = 0;
2904 bfd_vma resolv_vma = 0;
2915 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
2918 if (dynsymcount <= 0)
2921 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2925 plt = bfd_get_section_by_name (abfd, ".plt");
2929 /* Call common code to handle old-style executable PLTs. */
2930 if (elf_section_flags (plt) & SHF_EXECINSTR)
2931 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
2932 dynsymcount, dynsyms, ret);
2934 /* If this object was prelinked, the prelinker stored the address
2935 of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
2936 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
2937 if (dynamic != NULL)
2939 bfd_byte *dynbuf, *extdyn, *extdynend;
2941 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
2943 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
2946 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
2947 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
2950 extdynend = extdyn + dynamic->size;
2951 for (; extdyn < extdynend; extdyn += extdynsize)
2953 Elf_Internal_Dyn dyn;
2954 (*swap_dyn_in) (abfd, extdyn, &dyn);
2956 if (dyn.d_tag == DT_NULL)
2959 if (dyn.d_tag == DT_PPC_GOT)
2961 unsigned int g_o_t = dyn.d_un.d_val;
2962 asection *got = bfd_get_section_by_name (abfd, ".got");
2964 && bfd_get_section_contents (abfd, got, buf,
2965 g_o_t - got->vma + 4, 4))
2966 glink_vma = bfd_get_32 (abfd, buf);
2973 /* Otherwise we read the first plt entry. */
2976 if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
2977 glink_vma = bfd_get_32 (abfd, buf);
2983 /* The .glink section usually does not survive the final
2984 link; search for the section (usually .text) where the
2985 glink stubs now reside. */
2986 glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
2990 /* Determine glink PLT resolver by reading the relative branch
2991 from the first glink stub. */
2992 if (bfd_get_section_contents (abfd, glink, buf,
2993 glink_vma - glink->vma, 4))
2995 unsigned int insn = bfd_get_32 (abfd, buf);
2997 /* The first glink stub may either branch to the resolver ... */
2999 if ((insn & ~0x3fffffc) == 0)
3000 resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
3002 /* ... or fall through a bunch of NOPs. */
3003 else if ((insn ^ B ^ NOP) == 0)
3005 bfd_get_section_contents (abfd, glink, buf,
3006 glink_vma - glink->vma + i, 4);
3008 if (bfd_get_32 (abfd, buf) != NOP)
3010 resolv_vma = glink_vma + i;
3015 count = relplt->size / sizeof (Elf32_External_Rela);
3016 /* If the stubs are those for -shared/-pie then we might have
3017 multiple stubs for each plt entry. If that is the case then
3018 there is no way to associate stubs with their plt entries short
3019 of figuring out the GOT pointer value used in the stub. */
3020 if (!is_nonpic_glink_stub (abfd, glink,
3021 glink_vma - GLINK_ENTRY_SIZE - glink->vma))
3024 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3025 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
3028 size = count * sizeof (asymbol);
3029 p = relplt->relocation;
3030 for (i = 0; i < count; i++, p++)
3032 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3034 size += sizeof ("+0x") - 1 + 8;
3037 size += sizeof (asymbol) + sizeof ("__glink");
3040 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3042 s = *ret = bfd_malloc (size);
3046 stub_vma = glink_vma;
3047 names = (char *) (s + count + 1 + (resolv_vma != 0));
3048 p = relplt->relocation + count - 1;
3049 for (i = 0; i < count; i++)
3053 *s = **p->sym_ptr_ptr;
3054 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3055 we are defining a symbol, ensure one of them is set. */
3056 if ((s->flags & BSF_LOCAL) == 0)
3057 s->flags |= BSF_GLOBAL;
3058 s->flags |= BSF_SYNTHETIC;
3061 if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0)
3063 s->value = stub_vma - glink->vma;
3066 len = strlen ((*p->sym_ptr_ptr)->name);
3067 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3071 memcpy (names, "+0x", sizeof ("+0x") - 1);
3072 names += sizeof ("+0x") - 1;
3073 bfd_sprintf_vma (abfd, names, p->addend);
3074 names += strlen (names);
3076 memcpy (names, "@plt", sizeof ("@plt"));
3077 names += sizeof ("@plt");
3082 /* Add a symbol at the start of the glink branch table. */
3083 memset (s, 0, sizeof *s);
3085 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3087 s->value = glink_vma - glink->vma;
3089 memcpy (names, "__glink", sizeof ("__glink"));
3090 names += sizeof ("__glink");
3096 /* Add a symbol for the glink PLT resolver. */
3097 memset (s, 0, sizeof *s);
3099 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3101 s->value = resolv_vma - glink->vma;
3103 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3104 names += sizeof ("__glink_PLTresolve");
3112 /* The following functions are specific to the ELF linker, while
3113 functions above are used generally. They appear in this file more
3114 or less in the order in which they are called. eg.
3115 ppc_elf_check_relocs is called early in the link process,
3116 ppc_elf_finish_dynamic_sections is one of the last functions
3119 /* Track PLT entries needed for a given symbol. We might need more
3120 than one glink entry per symbol when generating a pic binary. */
3123 struct plt_entry *next;
3125 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
3126 This field stores the offset into .got2 used to initialise the
3127 GOT pointer reg. It will always be at least 32768. (Current
3128 gcc always uses an offset of 32768, but ld -r will pack .got2
3129 sections together resulting in larger offsets). */
3132 /* The .got2 section. */
3135 /* PLT refcount or offset. */
3138 bfd_signed_vma refcount;
3142 /* .glink stub offset. */
3143 bfd_vma glink_offset;
3146 /* Of those relocs that might be copied as dynamic relocs, this
3147 function selects those that must be copied when linking a shared
3148 library or PIE, even when the symbol is local. */
3151 must_be_dyn_reloc (struct bfd_link_info *info,
3152 enum elf_ppc_reloc_type r_type)
3157 /* Only relative relocs can be resolved when the object load
3158 address isn't fixed. DTPREL32 is excluded because the
3159 dynamic linker needs to differentiate global dynamic from
3160 local dynamic __tls_index pairs when PPC_OPT_TLS is set. */
3165 case R_PPC_REL14_BRTAKEN:
3166 case R_PPC_REL14_BRNTAKEN:
3172 case R_PPC_TPREL16_LO:
3173 case R_PPC_TPREL16_HI:
3174 case R_PPC_TPREL16_HA:
3175 /* These relocations are relative but in a shared library the
3176 linker doesn't know the thread pointer base. */
3177 return bfd_link_dll (info);
3181 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3182 copying dynamic variables from a shared lib into an app's dynbss
3183 section, and instead use a dynamic relocation to point into the
3185 #define ELIMINATE_COPY_RELOCS 1
3187 /* Used to track dynamic relocations for local symbols. */
3188 struct ppc_dyn_relocs
3190 struct ppc_dyn_relocs *next;
3192 /* The input section of the reloc. */
3195 /* Total number of relocs copied for the input section. */
3196 unsigned int count : 31;
3198 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3199 unsigned int ifunc : 1;
3202 /* PPC ELF linker hash entry. */
3204 struct ppc_elf_link_hash_entry
3206 struct elf_link_hash_entry elf;
3208 /* If this symbol is used in the linker created sections, the processor
3209 specific backend uses this field to map the field into the offset
3210 from the beginning of the section. */
3211 elf_linker_section_pointers_t *linker_section_pointer;
3213 /* Track dynamic relocs copied for this symbol. */
3214 struct elf_dyn_relocs *dyn_relocs;
3216 /* Contexts in which symbol is used in the GOT (or TOC).
3217 TLS_GD .. TLS_TLS bits are or'd into the mask as the
3218 corresponding relocs are encountered during check_relocs.
3219 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3220 indicate the corresponding GOT entry type is not needed. */
3221 #define TLS_GD 1 /* GD reloc. */
3222 #define TLS_LD 2 /* LD reloc. */
3223 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3224 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3225 #define TLS_TLS 16 /* Any TLS reloc. */
3226 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
3227 #define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
3230 /* Nonzero if we have seen a small data relocation referring to this
3232 unsigned char has_sda_refs : 1;
3234 /* Flag use of given relocations. */
3235 unsigned char has_addr16_ha : 1;
3236 unsigned char has_addr16_lo : 1;
3239 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
3241 /* PPC ELF linker hash table. */
3243 struct ppc_elf_link_hash_table
3245 struct elf_link_hash_table elf;
3247 /* Various options passed from the linker. */
3248 struct ppc_elf_params *params;
3250 /* Short-cuts to get to dynamic linker sections. */
3254 elf_linker_section_t sdata[2];
3256 asection *glink_eh_frame;
3258 /* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
3261 /* Shortcut to __tls_get_addr. */
3262 struct elf_link_hash_entry *tls_get_addr;
3264 /* The bfd that forced an old-style PLT. */
3267 /* TLS local dynamic got entry handling. */
3269 bfd_signed_vma refcount;
3273 /* Offset of branch table to PltResolve function in glink. */
3274 bfd_vma glink_pltresolve;
3276 /* Size of reserved GOT entries. */
3277 unsigned int got_header_size;
3278 /* Non-zero if allocating the header left a gap. */
3279 unsigned int got_gap;
3281 /* The type of PLT we have chosen to use. */
3282 enum ppc_elf_plt_type plt_type;
3284 /* True if the target system is VxWorks. */
3285 unsigned int is_vxworks:1;
3287 /* Whether there exist local gnu indirect function resolvers,
3288 referenced by dynamic relocations. */
3289 unsigned int local_ifunc_resolver:1;
3290 unsigned int maybe_local_ifunc_resolver:1;
3292 /* Set if tls optimization is enabled. */
3293 unsigned int do_tls_opt:1;
3295 /* The size of PLT entries. */
3297 /* The distance between adjacent PLT slots. */
3299 /* The size of the first PLT entry. */
3300 int plt_initial_entry_size;
3302 /* Small local sym cache. */
3303 struct sym_cache sym_cache;
3306 /* Rename some of the generic section flags to better document how they
3307 are used for ppc32. The flags are only valid for ppc32 elf objects. */
3309 /* Nonzero if this section has TLS related relocations. */
3310 #define has_tls_reloc sec_flg0
3312 /* Nonzero if this section has a call to __tls_get_addr. */
3313 #define has_tls_get_addr_call sec_flg1
3315 /* Get the PPC ELF linker hash table from a link_info structure. */
3317 #define ppc_elf_hash_table(p) \
3318 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3319 == PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
3321 /* Create an entry in a PPC ELF linker hash table. */
3323 static struct bfd_hash_entry *
3324 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
3325 struct bfd_hash_table *table,
3328 /* Allocate the structure if it has not already been allocated by a
3332 entry = bfd_hash_allocate (table,
3333 sizeof (struct ppc_elf_link_hash_entry));
3338 /* Call the allocation method of the superclass. */
3339 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3342 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
3343 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
3344 ppc_elf_hash_entry (entry)->tls_mask = 0;
3345 ppc_elf_hash_entry (entry)->has_sda_refs = 0;
3351 /* Create a PPC ELF linker hash table. */
3353 static struct bfd_link_hash_table *
3354 ppc_elf_link_hash_table_create (bfd *abfd)
3356 struct ppc_elf_link_hash_table *ret;
3357 static struct ppc_elf_params default_params
3358 = { PLT_OLD, 0, 1, 0, 0, 12, 0, 0, 0 };
3360 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
3364 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
3365 ppc_elf_link_hash_newfunc,
3366 sizeof (struct ppc_elf_link_hash_entry),
3373 ret->elf.init_plt_refcount.refcount = 0;
3374 ret->elf.init_plt_refcount.glist = NULL;
3375 ret->elf.init_plt_offset.offset = 0;
3376 ret->elf.init_plt_offset.glist = NULL;
3378 ret->params = &default_params;
3380 ret->sdata[0].name = ".sdata";
3381 ret->sdata[0].sym_name = "_SDA_BASE_";
3382 ret->sdata[0].bss_name = ".sbss";
3384 ret->sdata[1].name = ".sdata2";
3385 ret->sdata[1].sym_name = "_SDA2_BASE_";
3386 ret->sdata[1].bss_name = ".sbss2";
3388 ret->plt_entry_size = 12;
3389 ret->plt_slot_size = 8;
3390 ret->plt_initial_entry_size = 72;
3392 return &ret->elf.root;
3395 /* Hook linker params into hash table. */
3398 ppc_elf_link_params (struct bfd_link_info *info, struct ppc_elf_params *params)
3400 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3403 htab->params = params;
3404 params->pagesize_p2 = bfd_log2 (params->pagesize);
3407 /* Create .got and the related sections. */
3410 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
3412 struct ppc_elf_link_hash_table *htab;
3414 if (!_bfd_elf_create_got_section (abfd, info))
3417 htab = ppc_elf_hash_table (info);
3418 if (!htab->is_vxworks)
3420 /* The powerpc .got has a blrl instruction in it. Mark it
3422 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
3423 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3424 if (!bfd_set_section_flags (abfd, htab->elf.sgot, flags))
3431 /* Create a special linker section, used for R_PPC_EMB_SDAI16 and
3432 R_PPC_EMB_SDA2I16 pointers. These sections become part of .sdata
3433 and .sdata2. Create _SDA_BASE_ and _SDA2_BASE too. */
3436 ppc_elf_create_linker_section (bfd *abfd,
3437 struct bfd_link_info *info,
3439 elf_linker_section_t *lsect)
3443 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3444 | SEC_LINKER_CREATED);
3446 s = bfd_make_section_anyway_with_flags (abfd, lsect->name, flags);
3451 /* Define the sym on the first section of this name. */
3452 s = bfd_get_section_by_name (abfd, lsect->name);
3454 lsect->sym = _bfd_elf_define_linkage_sym (abfd, info, s, lsect->sym_name);
3455 if (lsect->sym == NULL)
3457 lsect->sym->root.u.def.value = 0x8000;
3462 ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
3464 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
3468 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
3469 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3470 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
3473 || !bfd_set_section_alignment (abfd, s,
3474 htab->params->ppc476_workaround ? 6 : 4))
3477 if (!info->no_ld_generated_unwind_info)
3479 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3480 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3481 s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
3482 htab->glink_eh_frame = s;
3484 || !bfd_set_section_alignment (abfd, s, 2))
3488 flags = SEC_ALLOC | SEC_LINKER_CREATED;
3489 s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
3492 || !bfd_set_section_alignment (abfd, s, 4))
3495 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3496 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3497 s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
3498 htab->elf.irelplt = s;
3500 || ! bfd_set_section_alignment (abfd, s, 2))
3503 if (!ppc_elf_create_linker_section (abfd, info, 0,
3507 if (!ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3514 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
3515 to output sections (just like _bfd_elf_create_dynamic_sections has
3516 to create .dynbss and .rela.bss). */
3519 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3521 struct ppc_elf_link_hash_table *htab;
3525 htab = ppc_elf_hash_table (info);
3527 if (htab->elf.sgot == NULL
3528 && !ppc_elf_create_got (abfd, info))
3531 if (!_bfd_elf_create_dynamic_sections (abfd, info))
3534 if (htab->glink == NULL
3535 && !ppc_elf_create_glink (abfd, info))
3538 s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
3539 SEC_ALLOC | SEC_LINKER_CREATED);
3544 if (! bfd_link_pic (info))
3546 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
3547 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3548 s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
3551 || ! bfd_set_section_alignment (abfd, s, 2))
3555 if (htab->is_vxworks
3556 && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
3560 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
3561 if (htab->plt_type == PLT_VXWORKS)
3562 /* The VxWorks PLT is a loaded section with contents. */
3563 flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
3564 return bfd_set_section_flags (abfd, s, flags);
3567 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3570 ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
3571 struct elf_link_hash_entry *dir,
3572 struct elf_link_hash_entry *ind)
3574 struct ppc_elf_link_hash_entry *edir, *eind;
3576 edir = (struct ppc_elf_link_hash_entry *) dir;
3577 eind = (struct ppc_elf_link_hash_entry *) ind;
3579 edir->tls_mask |= eind->tls_mask;
3580 edir->has_sda_refs |= eind->has_sda_refs;
3582 /* If called to transfer flags for a weakdef during processing
3583 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
3584 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3585 if (!(ELIMINATE_COPY_RELOCS
3586 && eind->elf.root.type != bfd_link_hash_indirect
3587 && edir->elf.dynamic_adjusted))
3588 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3590 if (edir->elf.versioned != versioned_hidden)
3591 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3592 edir->elf.ref_regular |= eind->elf.ref_regular;
3593 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3594 edir->elf.needs_plt |= eind->elf.needs_plt;
3595 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
3597 /* If we were called to copy over info for a weak sym, that's all. */
3598 if (eind->elf.root.type != bfd_link_hash_indirect)
3601 if (eind->dyn_relocs != NULL)
3603 if (edir->dyn_relocs != NULL)
3605 struct elf_dyn_relocs **pp;
3606 struct elf_dyn_relocs *p;
3608 /* Add reloc counts against the indirect sym to the direct sym
3609 list. Merge any entries against the same section. */
3610 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3612 struct elf_dyn_relocs *q;
3614 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3615 if (q->sec == p->sec)
3617 q->pc_count += p->pc_count;
3618 q->count += p->count;
3625 *pp = edir->dyn_relocs;
3628 edir->dyn_relocs = eind->dyn_relocs;
3629 eind->dyn_relocs = NULL;
3632 /* Copy over the GOT refcount entries that we may have already seen to
3633 the symbol which just became indirect. */
3634 edir->elf.got.refcount += eind->elf.got.refcount;
3635 eind->elf.got.refcount = 0;
3637 /* And plt entries. */
3638 if (eind->elf.plt.plist != NULL)
3640 if (edir->elf.plt.plist != NULL)
3642 struct plt_entry **entp;
3643 struct plt_entry *ent;
3645 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3647 struct plt_entry *dent;
3649 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3650 if (dent->sec == ent->sec && dent->addend == ent->addend)
3652 dent->plt.refcount += ent->plt.refcount;
3659 *entp = edir->elf.plt.plist;
3662 edir->elf.plt.plist = eind->elf.plt.plist;
3663 eind->elf.plt.plist = NULL;
3666 if (eind->elf.dynindx != -1)
3668 if (edir->elf.dynindx != -1)
3669 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3670 edir->elf.dynstr_index);
3671 edir->elf.dynindx = eind->elf.dynindx;
3672 edir->elf.dynstr_index = eind->elf.dynstr_index;
3673 eind->elf.dynindx = -1;
3674 eind->elf.dynstr_index = 0;
3678 /* Hook called by the linker routine which adds symbols from an object
3679 file. We use it to put .comm items in .sbss, and not .bss. */
3682 ppc_elf_add_symbol_hook (bfd *abfd,
3683 struct bfd_link_info *info,
3684 Elf_Internal_Sym *sym,
3685 const char **namep ATTRIBUTE_UNUSED,
3686 flagword *flagsp ATTRIBUTE_UNUSED,
3690 if (sym->st_shndx == SHN_COMMON
3691 && !bfd_link_relocatable (info)
3692 && is_ppc_elf (info->output_bfd)
3693 && sym->st_size <= elf_gp_size (abfd))
3695 /* Common symbols less than or equal to -G nn bytes are automatically
3697 struct ppc_elf_link_hash_table *htab;
3699 htab = ppc_elf_hash_table (info);
3700 if (htab->sbss == NULL)
3702 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3704 if (!htab->elf.dynobj)
3705 htab->elf.dynobj = abfd;
3707 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
3710 if (htab->sbss == NULL)
3715 *valp = sym->st_size;
3718 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
3719 && (abfd->flags & DYNAMIC) == 0
3720 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
3721 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
3726 /* Find a linker generated pointer with a given addend and type. */
3728 static elf_linker_section_pointers_t *
3729 elf_find_pointer_linker_section
3730 (elf_linker_section_pointers_t *linker_pointers,
3732 elf_linker_section_t *lsect)
3734 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
3735 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
3736 return linker_pointers;
3741 /* Allocate a pointer to live in a linker created section. */
3744 elf_allocate_pointer_linker_section (bfd *abfd,
3745 elf_linker_section_t *lsect,
3746 struct elf_link_hash_entry *h,
3747 const Elf_Internal_Rela *rel)
3749 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
3750 elf_linker_section_pointers_t *linker_section_ptr;
3751 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
3754 BFD_ASSERT (lsect != NULL);
3756 /* Is this a global symbol? */
3759 struct ppc_elf_link_hash_entry *eh;
3761 /* Has this symbol already been allocated? If so, our work is done. */
3762 eh = (struct ppc_elf_link_hash_entry *) h;
3763 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
3768 ptr_linker_section_ptr = &eh->linker_section_pointer;
3772 BFD_ASSERT (is_ppc_elf (abfd));
3774 /* Allocation of a pointer to a local symbol. */
3775 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
3777 /* Allocate a table to hold the local symbols if first time. */
3780 unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
3783 amt *= sizeof (elf_linker_section_pointers_t *);
3784 ptr = bfd_zalloc (abfd, amt);
3789 elf_local_ptr_offsets (abfd) = ptr;
3792 /* Has this symbol already been allocated? If so, our work is done. */
3793 if (elf_find_pointer_linker_section (ptr[r_symndx],
3798 ptr_linker_section_ptr = &ptr[r_symndx];
3801 /* Allocate space for a pointer in the linker section, and allocate
3802 a new pointer record from internal memory. */
3803 BFD_ASSERT (ptr_linker_section_ptr != NULL);
3804 amt = sizeof (elf_linker_section_pointers_t);
3805 linker_section_ptr = bfd_alloc (abfd, amt);
3807 if (!linker_section_ptr)
3810 linker_section_ptr->next = *ptr_linker_section_ptr;
3811 linker_section_ptr->addend = rel->r_addend;
3812 linker_section_ptr->lsect = lsect;
3813 *ptr_linker_section_ptr = linker_section_ptr;
3815 if (!bfd_set_section_alignment (lsect->section->owner, lsect->section, 2))
3817 linker_section_ptr->offset = lsect->section->size;
3818 lsect->section->size += 4;
3822 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
3823 lsect->name, (long) linker_section_ptr->offset,
3824 (long) lsect->section->size);
3830 static struct plt_entry **
3831 update_local_sym_info (bfd *abfd,
3832 Elf_Internal_Shdr *symtab_hdr,
3833 unsigned long r_symndx,
3836 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
3837 struct plt_entry **local_plt;
3838 char *local_got_tls_masks;
3840 if (local_got_refcounts == NULL)
3842 bfd_size_type size = symtab_hdr->sh_info;
3844 size *= (sizeof (*local_got_refcounts)
3845 + sizeof (*local_plt)
3846 + sizeof (*local_got_tls_masks));
3847 local_got_refcounts = bfd_zalloc (abfd, size);
3848 if (local_got_refcounts == NULL)
3850 elf_local_got_refcounts (abfd) = local_got_refcounts;
3853 local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
3854 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
3855 local_got_tls_masks[r_symndx] |= tls_type;
3856 if (tls_type != PLT_IFUNC)
3857 local_got_refcounts[r_symndx] += 1;
3858 return local_plt + r_symndx;
3862 update_plt_info (bfd *abfd, struct plt_entry **plist,
3863 asection *sec, bfd_vma addend)
3865 struct plt_entry *ent;
3869 for (ent = *plist; ent != NULL; ent = ent->next)
3870 if (ent->sec == sec && ent->addend == addend)
3874 bfd_size_type amt = sizeof (*ent);
3875 ent = bfd_alloc (abfd, amt);
3880 ent->addend = addend;
3881 ent->plt.refcount = 0;
3884 ent->plt.refcount += 1;
3888 static struct plt_entry *
3889 find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
3891 struct plt_entry *ent;
3895 for (ent = *plist; ent != NULL; ent = ent->next)
3896 if (ent->sec == sec && ent->addend == addend)
3902 is_branch_reloc (enum elf_ppc_reloc_type r_type)
3904 return (r_type == R_PPC_PLTREL24
3905 || r_type == R_PPC_LOCAL24PC
3906 || r_type == R_PPC_REL24
3907 || r_type == R_PPC_REL14
3908 || r_type == R_PPC_REL14_BRTAKEN
3909 || r_type == R_PPC_REL14_BRNTAKEN
3910 || r_type == R_PPC_ADDR24
3911 || r_type == R_PPC_ADDR14
3912 || r_type == R_PPC_ADDR14_BRTAKEN
3913 || r_type == R_PPC_ADDR14_BRNTAKEN
3914 || r_type == R_PPC_VLE_REL24);
3918 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
3921 /* xgettext:c-format */
3922 (_("%B: relocation %s cannot be used when making a shared object"),
3924 ppc_elf_howto_table[r_type]->name);
3925 bfd_set_error (bfd_error_bad_value);
3928 /* Look through the relocs for a section during the first phase, and
3929 allocate space in the global offset table or procedure linkage
3933 ppc_elf_check_relocs (bfd *abfd,
3934 struct bfd_link_info *info,
3936 const Elf_Internal_Rela *relocs)
3938 struct ppc_elf_link_hash_table *htab;
3939 Elf_Internal_Shdr *symtab_hdr;
3940 struct elf_link_hash_entry **sym_hashes;
3941 const Elf_Internal_Rela *rel;
3942 const Elf_Internal_Rela *rel_end;
3943 asection *got2, *sreloc;
3944 struct elf_link_hash_entry *tga;
3946 if (bfd_link_relocatable (info))
3949 /* Don't do anything special with non-loaded, non-alloced sections.
3950 In particular, any relocs in such sections should not affect GOT
3951 and PLT reference counting (ie. we don't allow them to create GOT
3952 or PLT entries), there's no possibility or desire to optimize TLS
3953 relocs, and there's not much point in propagating relocs to shared
3954 libs that the dynamic linker won't relocate. */
3955 if ((sec->flags & SEC_ALLOC) == 0)
3959 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
3963 BFD_ASSERT (is_ppc_elf (abfd));
3965 /* Initialize howto table if not already done. */
3966 if (!ppc_elf_howto_table[R_PPC_ADDR32])
3967 ppc_elf_howto_init ();
3969 htab = ppc_elf_hash_table (info);
3970 if (htab->glink == NULL)
3972 if (htab->elf.dynobj == NULL)
3973 htab->elf.dynobj = abfd;
3974 if (!ppc_elf_create_glink (htab->elf.dynobj, info))
3977 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3978 FALSE, FALSE, TRUE);
3979 symtab_hdr = &elf_symtab_hdr (abfd);
3980 sym_hashes = elf_sym_hashes (abfd);
3981 got2 = bfd_get_section_by_name (abfd, ".got2");
3984 rel_end = relocs + sec->reloc_count;
3985 for (rel = relocs; rel < rel_end; rel++)
3987 unsigned long r_symndx;
3988 enum elf_ppc_reloc_type r_type;
3989 struct elf_link_hash_entry *h;
3991 struct plt_entry **ifunc;
3993 r_symndx = ELF32_R_SYM (rel->r_info);
3994 if (r_symndx < symtab_hdr->sh_info)
3998 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3999 while (h->root.type == bfd_link_hash_indirect
4000 || h->root.type == bfd_link_hash_warning)
4001 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4004 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
4005 This shows up in particular in an R_PPC_ADDR32 in the eabi
4008 && htab->elf.sgot == NULL
4009 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
4011 if (htab->elf.dynobj == NULL)
4012 htab->elf.dynobj = abfd;
4013 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4015 BFD_ASSERT (h == htab->elf.hgot);
4019 r_type = ELF32_R_TYPE (rel->r_info);
4021 if (h == NULL && !htab->is_vxworks)
4023 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4028 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4030 /* Set PLT_IFUNC flag for this sym, no GOT entry yet. */
4031 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4036 /* STT_GNU_IFUNC symbols must have a PLT entry;
4037 In a non-pie executable even when there are
4039 if (!bfd_link_pic (info)
4040 || is_branch_reloc (r_type))
4043 if (r_type == R_PPC_PLTREL24)
4045 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4046 if (bfd_link_pic (info))
4047 addend = rel->r_addend;
4049 if (!update_plt_info (abfd, ifunc, got2, addend))
4055 if (!htab->is_vxworks
4056 && is_branch_reloc (r_type)
4061 && (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
4062 || ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
4063 /* We have a new-style __tls_get_addr call with a marker
4067 /* Mark this section as having an old-style call. */
4068 sec->has_tls_get_addr_call = 1;
4075 /* These special tls relocs tie a call to __tls_get_addr with
4076 its parameter symbol. */
4079 case R_PPC_GOT_TLSLD16:
4080 case R_PPC_GOT_TLSLD16_LO:
4081 case R_PPC_GOT_TLSLD16_HI:
4082 case R_PPC_GOT_TLSLD16_HA:
4083 tls_type = TLS_TLS | TLS_LD;
4086 case R_PPC_GOT_TLSGD16:
4087 case R_PPC_GOT_TLSGD16_LO:
4088 case R_PPC_GOT_TLSGD16_HI:
4089 case R_PPC_GOT_TLSGD16_HA:
4090 tls_type = TLS_TLS | TLS_GD;
4093 case R_PPC_GOT_TPREL16:
4094 case R_PPC_GOT_TPREL16_LO:
4095 case R_PPC_GOT_TPREL16_HI:
4096 case R_PPC_GOT_TPREL16_HA:
4097 if (bfd_link_dll (info))
4098 info->flags |= DF_STATIC_TLS;
4099 tls_type = TLS_TLS | TLS_TPREL;
4102 case R_PPC_GOT_DTPREL16:
4103 case R_PPC_GOT_DTPREL16_LO:
4104 case R_PPC_GOT_DTPREL16_HI:
4105 case R_PPC_GOT_DTPREL16_HA:
4106 tls_type = TLS_TLS | TLS_DTPREL;
4108 sec->has_tls_reloc = 1;
4111 /* GOT16 relocations */
4113 case R_PPC_GOT16_LO:
4114 case R_PPC_GOT16_HI:
4115 case R_PPC_GOT16_HA:
4116 /* This symbol requires a global offset table entry. */
4117 if (htab->elf.sgot == NULL)
4119 if (htab->elf.dynobj == NULL)
4120 htab->elf.dynobj = abfd;
4121 if (!ppc_elf_create_got (htab->elf.dynobj, info))
4126 h->got.refcount += 1;
4127 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
4130 /* This is a global offset table entry for a local symbol. */
4131 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
4134 /* We may also need a plt entry if the symbol turns out to be
4136 if (h != NULL && !bfd_link_pic (info))
4138 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4143 /* Indirect .sdata relocation. */
4144 case R_PPC_EMB_SDAI16:
4145 if (bfd_link_pic (info))
4147 bad_shared_reloc (abfd, r_type);
4150 htab->sdata[0].sym->ref_regular = 1;
4151 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[0],
4156 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4157 h->non_got_ref = TRUE;
4161 /* Indirect .sdata2 relocation. */
4162 case R_PPC_EMB_SDA2I16:
4163 if (bfd_link_pic (info))
4165 bad_shared_reloc (abfd, r_type);
4168 htab->sdata[1].sym->ref_regular = 1;
4169 if (!elf_allocate_pointer_linker_section (abfd, &htab->sdata[1],
4174 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4175 h->non_got_ref = TRUE;
4179 case R_PPC_SDAREL16:
4180 htab->sdata[0].sym->ref_regular = 1;
4183 case R_PPC_VLE_SDAREL_LO16A:
4184 case R_PPC_VLE_SDAREL_LO16D:
4185 case R_PPC_VLE_SDAREL_HI16A:
4186 case R_PPC_VLE_SDAREL_HI16D:
4187 case R_PPC_VLE_SDAREL_HA16A:
4188 case R_PPC_VLE_SDAREL_HA16D:
4191 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4192 h->non_got_ref = TRUE;
4196 case R_PPC_VLE_REL8:
4197 case R_PPC_VLE_REL15:
4198 case R_PPC_VLE_REL24:
4199 case R_PPC_VLE_LO16A:
4200 case R_PPC_VLE_LO16D:
4201 case R_PPC_VLE_HI16A:
4202 case R_PPC_VLE_HI16D:
4203 case R_PPC_VLE_HA16A:
4204 case R_PPC_VLE_HA16D:
4205 case R_PPC_VLE_ADDR20:
4208 case R_PPC_EMB_SDA2REL:
4209 if (bfd_link_pic (info))
4211 bad_shared_reloc (abfd, r_type);
4214 htab->sdata[1].sym->ref_regular = 1;
4217 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4218 h->non_got_ref = TRUE;
4222 case R_PPC_VLE_SDA21_LO:
4223 case R_PPC_VLE_SDA21:
4224 case R_PPC_EMB_SDA21:
4225 case R_PPC_EMB_RELSDA:
4226 if (bfd_link_pic (info))
4228 bad_shared_reloc (abfd, r_type);
4233 ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
4234 h->non_got_ref = TRUE;
4238 case R_PPC_EMB_NADDR32:
4239 case R_PPC_EMB_NADDR16:
4240 case R_PPC_EMB_NADDR16_LO:
4241 case R_PPC_EMB_NADDR16_HI:
4242 case R_PPC_EMB_NADDR16_HA:
4243 if (bfd_link_pic (info))
4245 bad_shared_reloc (abfd, r_type);
4249 h->non_got_ref = TRUE;
4252 case R_PPC_PLTREL24:
4257 case R_PPC_PLTREL32:
4258 case R_PPC_PLT16_LO:
4259 case R_PPC_PLT16_HI:
4260 case R_PPC_PLT16_HA:
4262 fprintf (stderr, "Reloc requires a PLT entry\n");
4264 /* This symbol requires a procedure linkage table entry. */
4269 /* It does not make sense to have a procedure linkage
4270 table entry for a non-ifunc local symbol. */
4271 info->callbacks->einfo
4272 /* xgettext:c-format */
4273 (_("%H: %s reloc against local symbol\n"),
4274 abfd, sec, rel->r_offset,
4275 ppc_elf_howto_table[r_type]->name);
4276 bfd_set_error (bfd_error_bad_value);
4284 if (r_type == R_PPC_PLTREL24)
4286 ppc_elf_tdata (abfd)->makes_plt_call = 1;
4287 if (bfd_link_pic (info))
4288 addend = rel->r_addend;
4291 if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
4296 /* The following relocations don't need to propagate the
4297 relocation if linking a shared object since they are
4298 section relative. */
4300 case R_PPC_SECTOFF_LO:
4301 case R_PPC_SECTOFF_HI:
4302 case R_PPC_SECTOFF_HA:
4303 case R_PPC_DTPREL16:
4304 case R_PPC_DTPREL16_LO:
4305 case R_PPC_DTPREL16_HI:
4306 case R_PPC_DTPREL16_HA:
4311 case R_PPC_REL16_LO:
4312 case R_PPC_REL16_HI:
4313 case R_PPC_REL16_HA:
4314 case R_PPC_REL16DX_HA:
4315 ppc_elf_tdata (abfd)->has_rel16 = 1;
4318 /* These are just markers. */
4320 case R_PPC_EMB_MRKREF:
4324 case R_PPC_RELAX_PLT:
4325 case R_PPC_RELAX_PLTREL24:
4329 /* These should only appear in dynamic objects. */
4331 case R_PPC_GLOB_DAT:
4332 case R_PPC_JMP_SLOT:
4333 case R_PPC_RELATIVE:
4334 case R_PPC_IRELATIVE:
4337 /* These aren't handled yet. We'll report an error later. */
4339 case R_PPC_EMB_RELSEC16:
4340 case R_PPC_EMB_RELST_LO:
4341 case R_PPC_EMB_RELST_HI:
4342 case R_PPC_EMB_RELST_HA:
4343 case R_PPC_EMB_BIT_FLD:
4346 /* This refers only to functions defined in the shared library. */
4347 case R_PPC_LOCAL24PC:
4348 if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
4350 htab->plt_type = PLT_OLD;
4351 htab->old_bfd = abfd;
4353 if (h != NULL && h->type == STT_GNU_IFUNC)
4356 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4361 /* This relocation describes the C++ object vtable hierarchy.
4362 Reconstruct it for later use during GC. */
4363 case R_PPC_GNU_VTINHERIT:
4364 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4368 /* This relocation describes which C++ vtable entries are actually
4369 used. Record for later use during GC. */
4370 case R_PPC_GNU_VTENTRY:
4371 BFD_ASSERT (h != NULL);
4373 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4377 /* We shouldn't really be seeing TPREL32. */
4380 case R_PPC_TPREL16_LO:
4381 case R_PPC_TPREL16_HI:
4382 case R_PPC_TPREL16_HA:
4383 if (bfd_link_dll (info))
4384 info->flags |= DF_STATIC_TLS;
4388 case R_PPC_DTPMOD32:
4389 case R_PPC_DTPREL32:
4395 && (sec->flags & SEC_CODE) != 0
4396 && bfd_link_pic (info)
4397 && htab->plt_type == PLT_UNSET)
4399 /* Old -fPIC gcc code has .long LCTOC1-LCFx just before
4400 the start of a function, which assembles to a REL32
4401 reference to .got2. If we detect one of these, then
4402 force the old PLT layout because the linker cannot
4403 reliably deduce the GOT pointer value needed for
4406 Elf_Internal_Sym *isym;
4408 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4413 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4416 htab->plt_type = PLT_OLD;
4417 htab->old_bfd = abfd;
4420 if (h == NULL || h == htab->elf.hgot)
4426 case R_PPC_ADDR16_LO:
4427 case R_PPC_ADDR16_HI:
4428 case R_PPC_ADDR16_HA:
4431 if (h != NULL && !bfd_link_pic (info))
4433 /* We may need a plt entry if the symbol turns out to be
4434 a function defined in a dynamic object. */
4435 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4438 /* We may need a copy reloc too. */
4440 h->pointer_equality_needed = 1;
4441 if (r_type == R_PPC_ADDR16_HA)
4442 ppc_elf_hash_entry (h)->has_addr16_ha = 1;
4443 if (r_type == R_PPC_ADDR16_LO)
4444 ppc_elf_hash_entry (h)->has_addr16_lo = 1;
4450 case R_PPC_REL14_BRTAKEN:
4451 case R_PPC_REL14_BRNTAKEN:
4454 if (h == htab->elf.hgot)
4456 if (htab->plt_type == PLT_UNSET)
4458 htab->plt_type = PLT_OLD;
4459 htab->old_bfd = abfd;
4467 case R_PPC_ADDR14_BRTAKEN:
4468 case R_PPC_ADDR14_BRNTAKEN:
4469 if (h != NULL && !bfd_link_pic (info))
4471 /* We may need a plt entry if the symbol turns out to be
4472 a function defined in a dynamic object. */
4474 if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
4480 /* If we are creating a shared library, and this is a reloc
4481 against a global symbol, or a non PC relative reloc
4482 against a local symbol, then we need to copy the reloc
4483 into the shared library. However, if we are linking with
4484 -Bsymbolic, we do not need to copy a reloc against a
4485 global symbol which is defined in an object we are
4486 including in the link (i.e., DEF_REGULAR is set). At
4487 this point we have not seen all the input files, so it is
4488 possible that DEF_REGULAR is not set now but will be set
4489 later (it is never cleared). In case of a weak definition,
4490 DEF_REGULAR may be cleared later by a strong definition in
4491 a shared library. We account for that possibility below by
4492 storing information in the dyn_relocs field of the hash
4493 table entry. A similar situation occurs when creating
4494 shared libraries and symbol visibility changes render the
4497 If on the other hand, we are creating an executable, we
4498 may need to keep relocations for symbols satisfied by a
4499 dynamic library if we manage to avoid copy relocs for the
4501 if ((bfd_link_pic (info)
4502 && (must_be_dyn_reloc (info, r_type)
4504 && (!SYMBOLIC_BIND (info, h)
4505 || h->root.type == bfd_link_hash_defweak
4506 || !h->def_regular))))
4507 || (ELIMINATE_COPY_RELOCS
4508 && !bfd_link_pic (info)
4510 && (h->root.type == bfd_link_hash_defweak
4511 || !h->def_regular)))
4515 "ppc_elf_check_relocs needs to "
4516 "create relocation for %s\n",
4517 (h && h->root.root.string
4518 ? h->root.root.string : "<unknown>"));
4522 if (htab->elf.dynobj == NULL)
4523 htab->elf.dynobj = abfd;
4525 sreloc = _bfd_elf_make_dynamic_reloc_section
4526 (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
4532 /* If this is a global symbol, we count the number of
4533 relocations we need for this symbol. */
4536 struct elf_dyn_relocs *p;
4537 struct elf_dyn_relocs **rel_head;
4539 rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
4541 if (p == NULL || p->sec != sec)
4543 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4546 p->next = *rel_head;
4553 if (!must_be_dyn_reloc (info, r_type))
4558 /* Track dynamic relocs needed for local syms too.
4559 We really need local syms available to do this
4561 struct ppc_dyn_relocs *p;
4562 struct ppc_dyn_relocs **rel_head;
4563 bfd_boolean is_ifunc;
4566 Elf_Internal_Sym *isym;
4568 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4573 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
4577 vpp = &elf_section_data (s)->local_dynrel;
4578 rel_head = (struct ppc_dyn_relocs **) vpp;
4579 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
4581 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
4583 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
4585 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4588 p->next = *rel_head;
4591 p->ifunc = is_ifunc;
4605 /* Warn for conflicting Tag_GNU_Power_ABI_FP attributes between IBFD
4606 and OBFD, and merge non-conflicting ones. */
4608 _bfd_elf_ppc_merge_fp_attributes (bfd *ibfd, struct bfd_link_info *info)
4610 bfd *obfd = info->output_bfd;
4611 obj_attribute *in_attr, *in_attrs;
4612 obj_attribute *out_attr, *out_attrs;
4614 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4615 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4617 in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
4618 out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
4620 if (in_attr->i != out_attr->i)
4622 int in_fp = in_attr->i & 3;
4623 int out_fp = out_attr->i & 3;
4627 else if (out_fp == 0)
4630 out_attr->i ^= in_fp;
4632 else if (out_fp != 2 && in_fp == 2)
4634 /* xgettext:c-format */
4635 (_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
4636 else if (out_fp == 2 && in_fp != 2)
4638 /* xgettext:c-format */
4639 (_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
4640 else if (out_fp == 1 && in_fp == 3)
4642 /* xgettext:c-format */
4643 (_("Warning: %B uses double-precision hard float, "
4644 "%B uses single-precision hard float"), obfd, ibfd);
4645 else if (out_fp == 3 && in_fp == 1)
4647 /* xgettext:c-format */
4648 (_("Warning: %B uses double-precision hard float, "
4649 "%B uses single-precision hard float"), ibfd, obfd);
4651 in_fp = in_attr->i & 0xc;
4652 out_fp = out_attr->i & 0xc;
4655 else if (out_fp == 0)
4658 out_attr->i ^= in_fp;
4660 else if (out_fp != 2 * 4 && in_fp == 2 * 4)
4662 /* xgettext:c-format */
4663 (_("Warning: %B uses 64-bit long double, "
4664 "%B uses 128-bit long double"), ibfd, obfd);
4665 else if (in_fp != 2 * 4 && out_fp == 2 * 4)
4667 /* xgettext:c-format */
4668 (_("Warning: %B uses 64-bit long double, "
4669 "%B uses 128-bit long double"), obfd, ibfd);
4670 else if (out_fp == 1 * 4 && in_fp == 3 * 4)
4672 /* xgettext:c-format */
4673 (_("Warning: %B uses IBM long double, "
4674 "%B uses IEEE long double"), ibfd, obfd);
4675 else if (out_fp == 3 * 4 && in_fp == 1 * 4)
4677 /* xgettext:c-format */
4678 (_("Warning: %B uses IBM long double, "
4679 "%B uses IEEE long double"), obfd, ibfd);
4683 /* Merge object attributes from IBFD into OBFD. Warn if
4684 there are conflicting attributes. */
4686 ppc_elf_merge_obj_attributes (bfd *ibfd, struct bfd_link_info *info)
4689 obj_attribute *in_attr, *in_attrs;
4690 obj_attribute *out_attr, *out_attrs;
4692 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
4694 obfd = info->output_bfd;
4695 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4696 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4698 /* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
4699 merge non-conflicting ones. */
4700 in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
4701 out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
4702 if (in_attr->i != out_attr->i)
4704 int in_vec = in_attr->i & 3;
4705 int out_vec = out_attr->i & 3;
4709 else if (out_vec == 0)
4712 out_attr->i = in_vec;
4714 /* For now, allow generic to transition to AltiVec or SPE
4715 without a warning. If GCC marked files with their stack
4716 alignment and used don't-care markings for files which are
4717 not affected by the vector ABI, we could warn about this
4719 else if (in_vec == 1)
4721 else if (out_vec == 1)
4724 out_attr->i = in_vec;
4726 else if (out_vec < in_vec)
4728 /* xgettext:c-format */
4729 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4731 else if (out_vec > in_vec)
4733 /* xgettext:c-format */
4734 (_("Warning: %B uses AltiVec vector ABI, %B uses SPE vector ABI"),
4738 /* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
4739 and merge non-conflicting ones. */
4740 in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
4741 out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
4742 if (in_attr->i != out_attr->i)
4744 int in_struct = in_attr->i & 3;
4745 int out_struct = out_attr->i & 3;
4747 if (in_struct == 0 || in_struct == 3)
4749 else if (out_struct == 0)
4752 out_attr->i = in_struct;
4754 else if (out_struct < in_struct)
4756 /* xgettext:c-format */
4757 (_("Warning: %B uses r3/r4 for small structure returns, "
4758 "%B uses memory"), obfd, ibfd);
4759 else if (out_struct > in_struct)
4761 /* xgettext:c-format */
4762 (_("Warning: %B uses r3/r4 for small structure returns, "
4763 "%B uses memory"), ibfd, obfd);
4766 /* Merge Tag_compatibility attributes and any common GNU ones. */
4767 _bfd_elf_merge_object_attributes (ibfd, info);
4772 /* Merge backend specific data from an object file to the output
4773 object file when linking. */
4776 ppc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4778 bfd *obfd = info->output_bfd;
4783 if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
4786 /* Check if we have the same endianness. */
4787 if (! _bfd_generic_verify_endian_match (ibfd, info))
4790 if (!ppc_elf_merge_obj_attributes (ibfd, info))
4793 new_flags = elf_elfheader (ibfd)->e_flags;
4794 old_flags = elf_elfheader (obfd)->e_flags;
4795 if (!elf_flags_init (obfd))
4797 /* First call, no flags set. */
4798 elf_flags_init (obfd) = TRUE;
4799 elf_elfheader (obfd)->e_flags = new_flags;
4802 /* Compatible flags are ok. */
4803 else if (new_flags == old_flags)
4806 /* Incompatible flags. */
4809 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
4810 to be linked with either. */
4812 if ((new_flags & EF_PPC_RELOCATABLE) != 0
4813 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
4817 (_("%B: compiled with -mrelocatable and linked with "
4818 "modules compiled normally"), ibfd);
4820 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
4821 && (old_flags & EF_PPC_RELOCATABLE) != 0)
4825 (_("%B: compiled normally and linked with "
4826 "modules compiled with -mrelocatable"), ibfd);
4829 /* The output is -mrelocatable-lib iff both the input files are. */
4830 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
4831 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
4833 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
4834 but each input file is either -mrelocatable or -mrelocatable-lib. */
4835 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
4836 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
4837 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
4838 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
4840 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
4841 any module uses it. */
4842 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
4844 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4845 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
4847 /* Warn about any other mismatches. */
4848 if (new_flags != old_flags)
4852 /* xgettext:c-format */
4853 (_("%B: uses different e_flags (%#x) fields "
4854 "than previous modules (%#x)"),
4855 ibfd, new_flags, old_flags);
4860 bfd_set_error (bfd_error_bad_value);
4869 ppc_elf_vle_split16 (bfd *input_bfd,
4870 asection *input_section,
4871 unsigned long offset,
4874 split16_format_type split16_format,
4877 unsigned int insn, opcode, top5;
4879 insn = bfd_get_32 (input_bfd, loc);
4880 opcode = insn & 0xfc00f800;
4881 if (opcode == E_OR2I_INSN
4882 || opcode == E_AND2I_DOT_INSN
4883 || opcode == E_OR2IS_INSN
4884 || opcode == E_LIS_INSN
4885 || opcode == E_AND2IS_DOT_INSN)
4887 if (split16_format != split16a_type)
4890 split16_format = split16a_type;
4893 /* xgettext:c-format */
4894 (_("%B(%A+0x%lx): expected 16A style relocation on 0x%08x insn"),
4895 input_bfd, input_section, offset, opcode);
4898 else if (opcode == E_ADD2I_DOT_INSN
4899 || opcode == E_ADD2IS_INSN
4900 || opcode == E_CMP16I_INSN
4901 || opcode == E_MULL2I_INSN
4902 || opcode == E_CMPL16I_INSN
4903 || opcode == E_CMPH16I_INSN
4904 || opcode == E_CMPHL16I_INSN)
4906 if (split16_format != split16d_type)
4909 split16_format = split16d_type;
4912 /* xgettext:c-format */
4913 (_("%B(%A+0x%lx): expected 16D style relocation on 0x%08x insn"),
4914 input_bfd, input_section, offset, opcode);
4917 top5 = value & 0xf800;
4918 top5 = top5 << (split16_format == split16a_type ? 5 : 10);
4919 insn &= (split16_format == split16a_type ? ~0x1f07ff : ~0x3e007ff);
4921 insn |= value & 0x7ff;
4922 bfd_put_32 (input_bfd, insn, loc);
4926 ppc_elf_vle_split20 (bfd *output_bfd, bfd_byte *loc, bfd_vma value)
4930 insn = bfd_get_32 (output_bfd, loc);
4931 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
4932 /* Top 4 bits of value to 17..20. */
4933 insn |= (value & 0xf0000) >> 5;
4934 /* Next 5 bits of the value to 11..15. */
4935 insn |= (value & 0xf800) << 5;
4936 /* And the final 11 bits of the value to bits 21 to 31. */
4937 insn |= value & 0x7ff;
4938 bfd_put_32 (output_bfd, insn, loc);
4942 /* Choose which PLT scheme to use, and set .plt flags appropriately.
4943 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
4945 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
4946 struct bfd_link_info *info)
4948 struct ppc_elf_link_hash_table *htab;
4951 htab = ppc_elf_hash_table (info);
4953 if (htab->plt_type == PLT_UNSET)
4955 struct elf_link_hash_entry *h;
4957 if (htab->params->plt_style == PLT_OLD)
4958 htab->plt_type = PLT_OLD;
4959 else if (bfd_link_pic (info)
4960 && htab->elf.dynamic_sections_created
4961 && (h = elf_link_hash_lookup (&htab->elf, "_mcount",
4962 FALSE, FALSE, TRUE)) != NULL
4963 && (h->type == STT_FUNC
4966 && !(SYMBOL_CALLS_LOCAL (info, h)
4967 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
4969 /* Profiling of shared libs (and pies) is not supported with
4970 secure plt, because ppc32 does profiling before a
4971 function prologue and a secure plt pic call stubs needs
4972 r30 to be set up. */
4973 htab->plt_type = PLT_OLD;
4978 enum ppc_elf_plt_type plt_type = htab->params->plt_style;
4980 /* Look through the reloc flags left by ppc_elf_check_relocs.
4981 Use the old style bss plt if a file makes plt calls
4982 without using the new relocs, and if ld isn't given
4983 --secure-plt and we never see REL16 relocs. */
4984 if (plt_type == PLT_UNSET)
4986 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
4987 if (is_ppc_elf (ibfd))
4989 if (ppc_elf_tdata (ibfd)->has_rel16)
4991 else if (ppc_elf_tdata (ibfd)->makes_plt_call)
4994 htab->old_bfd = ibfd;
4998 htab->plt_type = plt_type;
5001 if (htab->plt_type == PLT_OLD && htab->params->plt_style == PLT_NEW)
5003 if (htab->old_bfd != NULL)
5004 info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
5007 info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
5010 BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
5012 if (htab->plt_type == PLT_NEW)
5014 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
5015 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
5017 /* The new PLT is a loaded section. */
5018 if (htab->elf.splt != NULL
5019 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.splt, flags))
5022 /* The new GOT is not executable. */
5023 if (htab->elf.sgot != NULL
5024 && !bfd_set_section_flags (htab->elf.dynobj, htab->elf.sgot, flags))
5029 /* Stop an unused .glink section from affecting .text alignment. */
5030 if (htab->glink != NULL
5031 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
5034 return htab->plt_type == PLT_NEW;
5037 /* Return the section that should be marked against GC for a given
5041 ppc_elf_gc_mark_hook (asection *sec,
5042 struct bfd_link_info *info,
5043 Elf_Internal_Rela *rel,
5044 struct elf_link_hash_entry *h,
5045 Elf_Internal_Sym *sym)
5048 switch (ELF32_R_TYPE (rel->r_info))
5050 case R_PPC_GNU_VTINHERIT:
5051 case R_PPC_GNU_VTENTRY:
5055 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5058 /* Set plt output section type, htab->tls_get_addr, and call the
5059 generic ELF tls_setup function. */
5062 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5064 struct ppc_elf_link_hash_table *htab;
5066 htab = ppc_elf_hash_table (info);
5067 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5068 FALSE, FALSE, TRUE);
5069 if (htab->plt_type != PLT_NEW)
5070 htab->params->no_tls_get_addr_opt = TRUE;
5072 if (!htab->params->no_tls_get_addr_opt)
5074 struct elf_link_hash_entry *opt, *tga;
5075 opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
5076 FALSE, FALSE, TRUE);
5078 && (opt->root.type == bfd_link_hash_defined
5079 || opt->root.type == bfd_link_hash_defweak))
5081 /* If glibc supports an optimized __tls_get_addr call stub,
5082 signalled by the presence of __tls_get_addr_opt, and we'll
5083 be calling __tls_get_addr via a plt call stub, then
5084 make __tls_get_addr point to __tls_get_addr_opt. */
5085 tga = htab->tls_get_addr;
5086 if (htab->elf.dynamic_sections_created
5088 && (tga->type == STT_FUNC
5090 && !(SYMBOL_CALLS_LOCAL (info, tga)
5091 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga)))
5093 struct plt_entry *ent;
5094 for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
5095 if (ent->plt.refcount > 0)
5099 tga->root.type = bfd_link_hash_indirect;
5100 tga->root.u.i.link = &opt->root;
5101 ppc_elf_copy_indirect_symbol (info, opt, tga);
5103 if (opt->dynindx != -1)
5105 /* Use __tls_get_addr_opt in dynamic relocations. */
5107 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
5109 if (!bfd_elf_link_record_dynamic_symbol (info, opt))
5112 htab->tls_get_addr = opt;
5117 htab->params->no_tls_get_addr_opt = TRUE;
5119 if (htab->plt_type == PLT_NEW
5120 && htab->elf.splt != NULL
5121 && htab->elf.splt->output_section != NULL)
5123 elf_section_type (htab->elf.splt->output_section) = SHT_PROGBITS;
5124 elf_section_flags (htab->elf.splt->output_section) = SHF_ALLOC + SHF_WRITE;
5127 return _bfd_elf_tls_setup (obfd, info);
5130 /* Return TRUE iff REL is a branch reloc with a global symbol matching
5134 branch_reloc_hash_match (const bfd *ibfd,
5135 const Elf_Internal_Rela *rel,
5136 const struct elf_link_hash_entry *hash)
5138 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5139 enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
5140 unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
5142 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
5144 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5145 struct elf_link_hash_entry *h;
5147 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5148 while (h->root.type == bfd_link_hash_indirect
5149 || h->root.type == bfd_link_hash_warning)
5150 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5157 /* Run through all the TLS relocs looking for optimization
5161 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
5162 struct bfd_link_info *info)
5166 struct ppc_elf_link_hash_table *htab;
5169 if (!bfd_link_executable (info))
5172 htab = ppc_elf_hash_table (info);
5176 /* Make two passes through the relocs. First time check that tls
5177 relocs involved in setting up a tls_get_addr call are indeed
5178 followed by such a call. If they are not, don't do any tls
5179 optimization. On the second pass twiddle tls_mask flags to
5180 notify relocate_section that optimization can be done, and
5181 adjust got and plt refcounts. */
5182 for (pass = 0; pass < 2; ++pass)
5183 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
5185 Elf_Internal_Sym *locsyms = NULL;
5186 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
5187 asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
5189 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5190 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5192 Elf_Internal_Rela *relstart, *rel, *relend;
5193 int expecting_tls_get_addr = 0;
5195 /* Read the relocations. */
5196 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5198 if (relstart == NULL)
5201 relend = relstart + sec->reloc_count;
5202 for (rel = relstart; rel < relend; rel++)
5204 enum elf_ppc_reloc_type r_type;
5205 unsigned long r_symndx;
5206 struct elf_link_hash_entry *h = NULL;
5208 char tls_set, tls_clear;
5209 bfd_boolean is_local;
5210 bfd_signed_vma *got_count;
5212 r_symndx = ELF32_R_SYM (rel->r_info);
5213 if (r_symndx >= symtab_hdr->sh_info)
5215 struct elf_link_hash_entry **sym_hashes;
5217 sym_hashes = elf_sym_hashes (ibfd);
5218 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5219 while (h->root.type == bfd_link_hash_indirect
5220 || h->root.type == bfd_link_hash_warning)
5221 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5229 r_type = ELF32_R_TYPE (rel->r_info);
5230 /* If this section has old-style __tls_get_addr calls
5231 without marker relocs, then check that each
5232 __tls_get_addr call reloc is preceded by a reloc
5233 that conceivably belongs to the __tls_get_addr arg
5234 setup insn. If we don't find matching arg setup
5235 relocs, don't do any tls optimization. */
5237 && sec->has_tls_get_addr_call
5239 && h == htab->tls_get_addr
5240 && !expecting_tls_get_addr
5241 && is_branch_reloc (r_type))
5243 info->callbacks->minfo ("%H __tls_get_addr lost arg, "
5244 "TLS optimization disabled\n",
5245 ibfd, sec, rel->r_offset);
5246 if (elf_section_data (sec)->relocs != relstart)
5251 expecting_tls_get_addr = 0;
5254 case R_PPC_GOT_TLSLD16:
5255 case R_PPC_GOT_TLSLD16_LO:
5256 expecting_tls_get_addr = 1;
5259 case R_PPC_GOT_TLSLD16_HI:
5260 case R_PPC_GOT_TLSLD16_HA:
5261 /* These relocs should never be against a symbol
5262 defined in a shared lib. Leave them alone if
5263 that turns out to be the case. */
5272 case R_PPC_GOT_TLSGD16:
5273 case R_PPC_GOT_TLSGD16_LO:
5274 expecting_tls_get_addr = 1;
5277 case R_PPC_GOT_TLSGD16_HI:
5278 case R_PPC_GOT_TLSGD16_HA:
5284 tls_set = TLS_TLS | TLS_TPRELGD;
5288 case R_PPC_GOT_TPREL16:
5289 case R_PPC_GOT_TPREL16_LO:
5290 case R_PPC_GOT_TPREL16_HI:
5291 case R_PPC_GOT_TPREL16_HA:
5296 tls_clear = TLS_TPREL;
5304 expecting_tls_get_addr = 2;
5315 if (!expecting_tls_get_addr
5316 || (expecting_tls_get_addr == 1
5317 && !sec->has_tls_get_addr_call))
5320 if (rel + 1 < relend
5321 && branch_reloc_hash_match (ibfd, rel + 1,
5322 htab->tls_get_addr))
5325 /* Uh oh, we didn't find the expected call. We
5326 could just mark this symbol to exclude it
5327 from tls optimization but it's safer to skip
5328 the entire optimization. */
5329 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
5330 "TLS optimization disabled\n"),
5331 ibfd, sec, rel->r_offset);
5332 if (elf_section_data (sec)->relocs != relstart)
5337 if (expecting_tls_get_addr)
5339 struct plt_entry *ent;
5342 if (bfd_link_pic (info)
5343 && ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
5344 addend = rel[1].r_addend;
5345 ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
5347 if (ent != NULL && ent->plt.refcount > 0)
5348 ent->plt.refcount -= 1;
5350 if (expecting_tls_get_addr == 2)
5356 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
5357 got_count = &h->got.refcount;
5361 bfd_signed_vma *lgot_refs;
5362 struct plt_entry **local_plt;
5365 if (locsyms == NULL)
5367 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5368 if (locsyms == NULL)
5369 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5370 symtab_hdr->sh_info,
5371 0, NULL, NULL, NULL);
5372 if (locsyms == NULL)
5374 if (elf_section_data (sec)->relocs != relstart)
5379 lgot_refs = elf_local_got_refcounts (ibfd);
5380 if (lgot_refs == NULL)
5382 local_plt = (struct plt_entry **)
5383 (lgot_refs + symtab_hdr->sh_info);
5384 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
5385 tls_mask = &lgot_masks[r_symndx];
5386 got_count = &lgot_refs[r_symndx];
5391 /* We managed to get rid of a got entry. */
5396 *tls_mask |= tls_set;
5397 *tls_mask &= ~tls_clear;
5400 if (elf_section_data (sec)->relocs != relstart)
5405 && (symtab_hdr->contents != (unsigned char *) locsyms))
5407 if (!info->keep_memory)
5410 symtab_hdr->contents = (unsigned char *) locsyms;
5413 htab->do_tls_opt = 1;
5417 /* Find dynamic relocs for H that apply to read-only sections. */
5420 readonly_dynrelocs (struct elf_link_hash_entry *h)
5422 struct elf_dyn_relocs *p;
5424 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5426 asection *s = p->sec->output_section;
5428 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5434 /* Return true if we have dynamic relocs against H or any of its weak
5435 aliases, that apply to read-only sections. Cannot be used after
5436 size_dynamic_sections. */
5439 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
5441 struct ppc_elf_link_hash_entry *eh = ppc_elf_hash_entry (h);
5444 if (readonly_dynrelocs (&eh->elf))
5446 eh = ppc_elf_hash_entry (eh->elf.u.alias);
5447 } while (eh != NULL && &eh->elf != h);
5452 /* Return whether H has pc-relative dynamic relocs. */
5455 pc_dynrelocs (struct elf_link_hash_entry *h)
5457 struct elf_dyn_relocs *p;
5459 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
5460 if (p->pc_count != 0)
5465 /* Adjust a symbol defined by a dynamic object and referenced by a
5466 regular object. The current definition is in some section of the
5467 dynamic object, but we're not including those sections. We have to
5468 change the definition to something the rest of the link can
5472 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5473 struct elf_link_hash_entry *h)
5475 struct ppc_elf_link_hash_table *htab;
5479 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
5480 h->root.root.string);
5483 /* Make sure we know what is going on here. */
5484 htab = ppc_elf_hash_table (info);
5485 BFD_ASSERT (htab->elf.dynobj != NULL
5487 || h->type == STT_GNU_IFUNC
5491 && !h->def_regular)));
5493 /* Deal with function syms. */
5494 if (h->type == STT_FUNC
5495 || h->type == STT_GNU_IFUNC
5498 bfd_boolean local = (SYMBOL_CALLS_LOCAL (info, h)
5499 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5500 /* Discard dyn_relocs when non-pic if we've decided that a
5501 function symbol is local. */
5502 if (!bfd_link_pic (info) && local)
5503 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5505 /* Clear procedure linkage table information for any symbol that
5506 won't need a .plt entry. */
5507 struct plt_entry *ent;
5508 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5509 if (ent->plt.refcount > 0)
5512 || (h->type != STT_GNU_IFUNC && local))
5514 /* A PLT entry is not required/allowed when:
5516 1. We are not using ld.so; because then the PLT entry
5517 can't be set up, so we can't use one. In this case,
5518 ppc_elf_adjust_dynamic_symbol won't even be called.
5520 2. GC has rendered the entry unused.
5522 3. We know for certain that a call to this symbol
5523 will go to this object, or will remain undefined. */
5524 h->plt.plist = NULL;
5526 h->pointer_equality_needed = 0;
5530 /* Taking a function's address in a read/write section
5531 doesn't require us to define the function symbol in the
5532 executable on a plt call stub. A dynamic reloc can
5533 be used instead, giving better runtime performance.
5534 (Calls via that function pointer don't need to bounce
5535 through the plt call stub.) Similarly, use a dynamic
5536 reloc for a weak reference when possible, allowing the
5537 resolution of the symbol to be set at load time rather
5539 if ((h->pointer_equality_needed
5541 && !h->ref_regular_nonweak
5542 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)))
5543 && !htab->is_vxworks
5544 && !ppc_elf_hash_entry (h)->has_sda_refs
5545 && !readonly_dynrelocs (h))
5547 h->pointer_equality_needed = 0;
5548 /* If we haven't seen a branch reloc then we don't need
5551 h->plt.plist = NULL;
5553 else if (!bfd_link_pic (info))
5554 /* We are going to be defining the function symbol on the
5555 plt stub, so no dyn_relocs needed when non-pic. */
5556 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5558 h->protected_def = 0;
5559 /* Function symbols can't have copy relocs. */
5563 h->plt.plist = NULL;
5565 /* If this is a weak symbol, and there is a real definition, the
5566 processor independent code will have arranged for us to see the
5567 real definition first, and we can just use the same value. */
5568 if (h->is_weakalias)
5570 struct elf_link_hash_entry *def = weakdef (h);
5571 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
5572 h->root.u.def.section = def->root.u.def.section;
5573 h->root.u.def.value = def->root.u.def.value;
5574 if (ELIMINATE_COPY_RELOCS)
5575 h->non_got_ref = def->non_got_ref;
5579 /* This is a reference to a symbol defined by a dynamic object which
5580 is not a function. */
5582 /* If we are creating a shared library, we must presume that the
5583 only references to the symbol are via the global offset table.
5584 For such cases we need not do anything here; the relocations will
5585 be handled correctly by relocate_section. */
5586 if (bfd_link_pic (info))
5588 h->protected_def = 0;
5592 /* If there are no references to this symbol that do not use the
5593 GOT, we don't need to generate a copy reloc. */
5594 if (!h->non_got_ref)
5596 h->protected_def = 0;
5600 /* Protected variables do not work with .dynbss. The copy in
5601 .dynbss won't be used by the shared library with the protected
5602 definition for the variable. Editing to PIC, or text relocations
5603 are preferable to an incorrect program. */
5604 if (h->protected_def)
5606 if (ELIMINATE_COPY_RELOCS
5607 && ppc_elf_hash_entry (h)->has_addr16_ha
5608 && ppc_elf_hash_entry (h)->has_addr16_lo
5609 && htab->params->pic_fixup == 0
5610 && info->disable_target_specific_optimizations <= 1)
5611 htab->params->pic_fixup = 1;
5615 /* If -z nocopyreloc was given, we won't generate them either. */
5616 if (info->nocopyreloc)
5619 /* If we didn't find any dynamic relocs in read-only sections, then
5620 we'll be keeping the dynamic relocs and avoiding the copy reloc.
5621 We can't do this if there are any small data relocations. This
5622 doesn't work on VxWorks, where we can not have dynamic
5623 relocations (other than copy and jump slot relocations) in an
5625 if (ELIMINATE_COPY_RELOCS
5626 && !ppc_elf_hash_entry (h)->has_sda_refs
5627 && !htab->is_vxworks
5629 && !alias_readonly_dynrelocs (h))
5632 /* We must allocate the symbol in our .dynbss section, which will
5633 become part of the .bss section of the executable. There will be
5634 an entry for this symbol in the .dynsym section. The dynamic
5635 object will contain position independent code, so all references
5636 from the dynamic object to this symbol will go through the global
5637 offset table. The dynamic linker will use the .dynsym entry to
5638 determine the address it must put in the global offset table, so
5639 both the dynamic object and the regular object will refer to the
5640 same memory location for the variable.
5642 Of course, if the symbol is referenced using SDAREL relocs, we
5643 must instead allocate it in .sbss. */
5645 if (ppc_elf_hash_entry (h)->has_sda_refs)
5647 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5648 s = htab->elf.sdynrelro;
5650 s = htab->elf.sdynbss;
5651 BFD_ASSERT (s != NULL);
5653 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
5654 copy the initial value out of the dynamic object and into the
5655 runtime process image. We need to remember the offset into the
5656 .rela.bss section we are going to use. */
5657 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5661 if (ppc_elf_hash_entry (h)->has_sda_refs)
5662 srel = htab->relsbss;
5663 else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
5664 srel = htab->elf.sreldynrelro;
5666 srel = htab->elf.srelbss;
5667 BFD_ASSERT (srel != NULL);
5668 srel->size += sizeof (Elf32_External_Rela);
5672 /* We no longer want dyn_relocs. */
5673 ppc_elf_hash_entry (h)->dyn_relocs = NULL;
5674 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5677 /* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
5678 xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
5679 specifying the addend on the plt relocation. For -fpic code, the sym
5680 is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
5681 xxxxxxxx.got2.plt_pic32.<callee>. */
5684 add_stub_sym (struct plt_entry *ent,
5685 struct elf_link_hash_entry *h,
5686 struct bfd_link_info *info)
5688 struct elf_link_hash_entry *sh;
5689 size_t len1, len2, len3;
5692 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
5694 if (bfd_link_pic (info))
5695 stub = ".plt_pic32.";
5697 stub = ".plt_call32.";
5699 len1 = strlen (h->root.root.string);
5700 len2 = strlen (stub);
5703 len3 = strlen (ent->sec->name);
5704 name = bfd_malloc (len1 + len2 + len3 + 9);
5707 sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
5709 memcpy (name + 8, ent->sec->name, len3);
5710 memcpy (name + 8 + len3, stub, len2);
5711 memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
5712 sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
5715 if (sh->root.type == bfd_link_hash_new)
5717 sh->root.type = bfd_link_hash_defined;
5718 sh->root.u.def.section = htab->glink;
5719 sh->root.u.def.value = ent->glink_offset;
5720 sh->ref_regular = 1;
5721 sh->def_regular = 1;
5722 sh->ref_regular_nonweak = 1;
5723 sh->forced_local = 1;
5725 sh->root.linker_def = 1;
5730 /* Allocate NEED contiguous space in .got, and return the offset.
5731 Handles allocation of the got header when crossing 32k. */
5734 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
5737 unsigned int max_before_header;
5739 if (htab->plt_type == PLT_VXWORKS)
5741 where = htab->elf.sgot->size;
5742 htab->elf.sgot->size += need;
5746 max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
5747 if (need <= htab->got_gap)
5749 where = max_before_header - htab->got_gap;
5750 htab->got_gap -= need;
5754 if (htab->elf.sgot->size + need > max_before_header
5755 && htab->elf.sgot->size <= max_before_header)
5757 htab->got_gap = max_before_header - htab->elf.sgot->size;
5758 htab->elf.sgot->size = max_before_header + htab->got_header_size;
5760 where = htab->elf.sgot->size;
5761 htab->elf.sgot->size += need;
5767 /* Calculate size of GOT entries for symbol given its TLS_MASK.
5768 TLS_LD is excluded because those go in a special GOT slot. */
5770 static inline unsigned int
5771 got_entries_needed (int tls_mask)
5774 if ((tls_mask & TLS_TLS) == 0)
5779 if ((tls_mask & TLS_GD) != 0)
5781 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
5783 if ((tls_mask & TLS_DTPREL) != 0)
5789 /* Calculate size of relocs needed for symbol given its TLS_MASK and
5790 NEEDed GOT entries. KNOWN says a TPREL offset can be calculated at
5793 static inline unsigned int
5794 got_relocs_needed (int tls_mask, unsigned int need, bfd_boolean known)
5796 /* All the entries we allocated need relocs.
5797 Except IE in executable with a local symbol. We could also omit
5798 the DTPREL reloc on the second word of a GD entry under the same
5799 condition as that for IE, but ld.so needs to differentiate
5800 LD and GD entries. */
5801 if ((tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0 && known)
5803 return need * sizeof (Elf32_External_Rela) / 4;
5806 /* If H is undefined, make it dynamic if that makes sense. */
5809 ensure_undef_dynamic (struct bfd_link_info *info,
5810 struct elf_link_hash_entry *h)
5812 struct elf_link_hash_table *htab = elf_hash_table (info);
5814 if (htab->dynamic_sections_created
5815 && ((info->dynamic_undefined_weak != 0
5816 && h->root.type == bfd_link_hash_undefweak)
5817 || h->root.type == bfd_link_hash_undefined)
5820 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5821 return bfd_elf_link_record_dynamic_symbol (info, h);
5825 /* Allocate space in associated reloc sections for dynamic relocs. */
5828 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5830 struct bfd_link_info *info = inf;
5831 struct ppc_elf_link_hash_entry *eh;
5832 struct ppc_elf_link_hash_table *htab;
5833 struct elf_dyn_relocs *p;
5836 if (h->root.type == bfd_link_hash_indirect)
5839 htab = ppc_elf_hash_table (info);
5840 eh = (struct ppc_elf_link_hash_entry *) h;
5841 if (eh->elf.got.refcount > 0
5842 || (ELIMINATE_COPY_RELOCS
5843 && !eh->elf.def_regular
5844 && eh->elf.protected_def
5845 && eh->has_addr16_ha
5846 && eh->has_addr16_lo
5847 && htab->params->pic_fixup > 0))
5851 /* Make sure this symbol is output as a dynamic symbol. */
5852 if (!ensure_undef_dynamic (info, &eh->elf))
5856 if ((eh->tls_mask & TLS_LD) != 0)
5858 if (!eh->elf.def_dynamic)
5859 /* We'll just use htab->tlsld_got.offset. This should
5860 always be the case. It's a little odd if we have
5861 a local dynamic reloc against a non-local symbol. */
5862 htab->tlsld_got.refcount += 1;
5866 need += got_entries_needed (eh->tls_mask);
5868 eh->elf.got.offset = (bfd_vma) -1;
5871 eh->elf.got.offset = allocate_got (htab, need);
5872 if ((bfd_link_pic (info)
5873 || (htab->elf.dynamic_sections_created
5874 && eh->elf.dynindx != -1
5875 && !SYMBOL_REFERENCES_LOCAL (info, &eh->elf)))
5876 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &eh->elf))
5879 bfd_boolean tprel_known = (bfd_link_executable (info)
5880 && SYMBOL_REFERENCES_LOCAL (info,
5883 need = got_relocs_needed (eh->tls_mask, need, tprel_known);
5884 if ((eh->tls_mask & TLS_LD) != 0 && eh->elf.def_dynamic)
5885 need -= sizeof (Elf32_External_Rela);
5886 rsec = htab->elf.srelgot;
5887 if (eh->elf.type == STT_GNU_IFUNC)
5888 rsec = htab->elf.irelplt;
5894 eh->elf.got.offset = (bfd_vma) -1;
5896 /* If no dynamic sections we can't have dynamic relocs, except for
5897 IFUNCs which are handled even in static executables. */
5898 if (!htab->elf.dynamic_sections_created
5899 && h->type != STT_GNU_IFUNC)
5900 eh->dyn_relocs = NULL;
5902 /* Discard relocs on undefined symbols that must be local. */
5903 else if (h->root.type == bfd_link_hash_undefined
5904 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5905 eh->dyn_relocs = NULL;
5907 /* Also discard relocs on undefined weak syms with non-default
5908 visibility, or when dynamic_undefined_weak says so. */
5909 else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
5910 eh->dyn_relocs = NULL;
5912 if (eh->dyn_relocs == NULL)
5915 /* In the shared -Bsymbolic case, discard space allocated for
5916 dynamic pc-relative relocs against symbols which turn out to be
5917 defined in regular objects. For the normal shared case, discard
5918 space for relocs that have become local due to symbol visibility
5920 else if (bfd_link_pic (info))
5922 /* Relocs that use pc_count are those that appear on a call insn,
5923 or certain REL relocs (see must_be_dyn_reloc) that can be
5924 generated via assembly. We want calls to protected symbols to
5925 resolve directly to the function rather than going via the plt.
5926 If people want function pointer comparisons to work as expected
5927 then they should avoid writing weird assembly. */
5928 if (SYMBOL_CALLS_LOCAL (info, h))
5930 struct elf_dyn_relocs **pp;
5932 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5934 p->count -= p->pc_count;
5943 if (htab->is_vxworks)
5945 struct elf_dyn_relocs **pp;
5947 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5949 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
5956 if (eh->dyn_relocs != NULL)
5958 /* Make sure this symbol is output as a dynamic symbol. */
5959 if (!ensure_undef_dynamic (info, h))
5963 else if (ELIMINATE_COPY_RELOCS)
5965 /* For the non-pic case, discard space for relocs against
5966 symbols which turn out to need copy relocs or are not
5968 if (h->dynamic_adjusted
5970 && !ELF_COMMON_DEF_P (h)
5971 && !(h->protected_def
5972 && eh->has_addr16_ha
5973 && eh->has_addr16_lo
5974 && htab->params->pic_fixup > 0))
5976 /* Make sure this symbol is output as a dynamic symbol. */
5977 if (!ensure_undef_dynamic (info, h))
5980 if (h->dynindx == -1)
5981 eh->dyn_relocs = NULL;
5984 eh->dyn_relocs = NULL;
5987 /* Allocate space. */
5988 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5990 asection *sreloc = elf_section_data (p->sec)->sreloc;
5991 if (eh->elf.type == STT_GNU_IFUNC)
5992 sreloc = htab->elf.irelplt;
5993 sreloc->size += p->count * sizeof (Elf32_External_Rela);
5996 /* Handle PLT relocs. Done last, after dynindx has settled. */
5997 dyn = htab->elf.dynamic_sections_created && h->dynindx != -1;
5998 if (dyn || h->type == STT_GNU_IFUNC)
6000 struct plt_entry *ent;
6001 bfd_boolean doneone = FALSE;
6002 bfd_vma plt_offset = 0, glink_offset = 0;
6004 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6005 if (ent->plt.refcount > 0)
6007 asection *s = htab->elf.splt;
6012 if (htab->plt_type == PLT_NEW || !dyn)
6016 plt_offset = s->size;
6019 ent->plt.offset = plt_offset;
6022 if (!doneone || bfd_link_pic (info))
6024 glink_offset = s->size;
6025 s->size += GLINK_ENTRY_SIZE;
6026 if (h == htab->tls_get_addr
6027 && !htab->params->no_tls_get_addr_opt)
6028 s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
6031 && !bfd_link_pic (info)
6035 h->root.u.def.section = s;
6036 h->root.u.def.value = glink_offset;
6038 ent->glink_offset = glink_offset;
6040 if (htab->params->emit_stub_syms
6041 && !add_stub_sym (ent, h, info))
6048 /* If this is the first .plt entry, make room
6049 for the special first entry. */
6051 s->size += htab->plt_initial_entry_size;
6053 /* The PowerPC PLT is actually composed of two
6054 parts, the first part is 2 words (for a load
6055 and a jump), and then there is a remaining
6056 word available at the end. */
6057 plt_offset = (htab->plt_initial_entry_size
6058 + (htab->plt_slot_size
6060 - htab->plt_initial_entry_size)
6061 / htab->plt_entry_size)));
6063 /* If this symbol is not defined in a regular
6064 file, and we are not generating a shared
6065 library, then set the symbol to this location
6066 in the .plt. This is to avoid text
6067 relocations, and is required to make
6068 function pointers compare as equal between
6069 the normal executable and the shared library. */
6070 if (! bfd_link_pic (info)
6074 h->root.u.def.section = s;
6075 h->root.u.def.value = plt_offset;
6078 /* Make room for this entry. */
6079 s->size += htab->plt_entry_size;
6080 /* After the 8192nd entry, room for two entries
6082 if (htab->plt_type == PLT_OLD
6083 && (s->size - htab->plt_initial_entry_size)
6084 / htab->plt_entry_size
6085 > PLT_NUM_SINGLE_ENTRIES)
6086 s->size += htab->plt_entry_size;
6088 ent->plt.offset = plt_offset;
6091 /* We also need to make an entry in the .rela.plt section. */
6095 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6098 htab->elf.srelplt->size += sizeof (Elf32_External_Rela);
6100 if (htab->plt_type == PLT_VXWORKS)
6102 /* Allocate space for the unloaded relocations. */
6103 if (!bfd_link_pic (info)
6104 && htab->elf.dynamic_sections_created)
6107 == (bfd_vma) htab->plt_initial_entry_size)
6109 htab->srelplt2->size
6110 += (sizeof (Elf32_External_Rela)
6111 * VXWORKS_PLTRESOLVE_RELOCS);
6114 htab->srelplt2->size
6115 += (sizeof (Elf32_External_Rela)
6116 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
6119 /* Every PLT entry has an associated GOT entry in
6121 htab->elf.sgotplt->size += 4;
6128 ent->plt.offset = (bfd_vma) -1;
6132 h->plt.plist = NULL;
6138 h->plt.plist = NULL;
6145 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
6146 read-only sections. */
6149 maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
6153 if (h->root.type == bfd_link_hash_indirect)
6156 sec = readonly_dynrelocs (h);
6159 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
6161 info->flags |= DF_TEXTREL;
6162 info->callbacks->minfo
6163 (_("%B: dynamic relocation in read-only section `%A'\n"),
6166 /* Not an error, just cut short the traversal. */
6172 static const unsigned char glink_eh_frame_cie[] =
6174 0, 0, 0, 16, /* length. */
6175 0, 0, 0, 0, /* id. */
6176 1, /* CIE version. */
6177 'z', 'R', 0, /* Augmentation string. */
6178 4, /* Code alignment. */
6179 0x7c, /* Data alignment. */
6181 1, /* Augmentation size. */
6182 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
6183 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
6186 /* Set the sizes of the dynamic sections. */
6189 ppc_elf_size_dynamic_sections (bfd *output_bfd,
6190 struct bfd_link_info *info)
6192 struct ppc_elf_link_hash_table *htab;
6198 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
6201 htab = ppc_elf_hash_table (info);
6202 BFD_ASSERT (htab->elf.dynobj != NULL);
6204 if (elf_hash_table (info)->dynamic_sections_created)
6206 /* Set the contents of the .interp section to the interpreter. */
6207 if (bfd_link_executable (info) && !info->nointerp)
6209 s = bfd_get_linker_section (htab->elf.dynobj, ".interp");
6210 BFD_ASSERT (s != NULL);
6211 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6212 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6216 if (htab->plt_type == PLT_OLD)
6217 htab->got_header_size = 16;
6218 else if (htab->plt_type == PLT_NEW)
6219 htab->got_header_size = 12;
6221 /* Set up .got offsets for local syms, and space for local dynamic
6223 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
6225 bfd_signed_vma *local_got;
6226 bfd_signed_vma *end_local_got;
6227 struct plt_entry **local_plt;
6228 struct plt_entry **end_local_plt;
6230 bfd_size_type locsymcount;
6231 Elf_Internal_Shdr *symtab_hdr;
6233 if (!is_ppc_elf (ibfd))
6236 for (s = ibfd->sections; s != NULL; s = s->next)
6238 struct ppc_dyn_relocs *p;
6240 for (p = ((struct ppc_dyn_relocs *)
6241 elf_section_data (s)->local_dynrel);
6245 if (!bfd_is_abs_section (p->sec)
6246 && bfd_is_abs_section (p->sec->output_section))
6248 /* Input section has been discarded, either because
6249 it is a copy of a linkonce section or due to
6250 linker script /DISCARD/, so we'll be discarding
6253 else if (htab->is_vxworks
6254 && strcmp (p->sec->output_section->name,
6257 /* Relocations in vxworks .tls_vars sections are
6258 handled specially by the loader. */
6260 else if (p->count != 0)
6262 asection *sreloc = elf_section_data (p->sec)->sreloc;
6264 sreloc = htab->elf.irelplt;
6265 sreloc->size += p->count * sizeof (Elf32_External_Rela);
6266 if ((p->sec->output_section->flags
6267 & (SEC_READONLY | SEC_ALLOC))
6268 == (SEC_READONLY | SEC_ALLOC))
6270 info->flags |= DF_TEXTREL;
6271 info->callbacks->minfo (_("%B: dynamic relocation in read-only section `%A'\n"),
6272 p->sec->owner, p->sec);
6278 local_got = elf_local_got_refcounts (ibfd);
6282 symtab_hdr = &elf_symtab_hdr (ibfd);
6283 locsymcount = symtab_hdr->sh_info;
6284 end_local_got = local_got + locsymcount;
6285 local_plt = (struct plt_entry **) end_local_got;
6286 end_local_plt = local_plt + locsymcount;
6287 lgot_masks = (char *) end_local_plt;
6289 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
6293 if ((*lgot_masks & TLS_LD) != 0)
6294 htab->tlsld_got.refcount += 1;
6295 need = got_entries_needed (*lgot_masks);
6297 *local_got = (bfd_vma) -1;
6300 *local_got = allocate_got (htab, need);
6301 if (bfd_link_pic (info))
6304 bfd_boolean tprel_known = bfd_link_executable (info);
6306 need = got_relocs_needed (*lgot_masks, need, tprel_known);
6307 srel = htab->elf.srelgot;
6308 if ((*lgot_masks & PLT_IFUNC) != 0)
6309 srel = htab->elf.irelplt;
6315 *local_got = (bfd_vma) -1;
6317 if (htab->is_vxworks)
6320 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
6321 for (; local_plt < end_local_plt; ++local_plt)
6323 struct plt_entry *ent;
6324 bfd_boolean doneone = FALSE;
6325 bfd_vma plt_offset = 0, glink_offset = 0;
6327 for (ent = *local_plt; ent != NULL; ent = ent->next)
6328 if (ent->plt.refcount > 0)
6334 plt_offset = s->size;
6337 ent->plt.offset = plt_offset;
6340 if (!doneone || bfd_link_pic (info))
6342 glink_offset = s->size;
6343 s->size += GLINK_ENTRY_SIZE;
6345 ent->glink_offset = glink_offset;
6349 htab->elf.irelplt->size += sizeof (Elf32_External_Rela);
6354 ent->plt.offset = (bfd_vma) -1;
6358 /* Allocate space for global sym dynamic relocs. */
6359 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
6361 if (htab->tlsld_got.refcount > 0)
6363 htab->tlsld_got.offset = allocate_got (htab, 8);
6364 if (bfd_link_pic (info))
6365 htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
6368 htab->tlsld_got.offset = (bfd_vma) -1;
6370 if (htab->elf.sgot != NULL && htab->plt_type != PLT_VXWORKS)
6372 unsigned int g_o_t = 32768;
6374 /* If we haven't allocated the header, do so now. When we get here,
6375 for old plt/got the got size will be 0 to 32764 (not allocated),
6376 or 32780 to 65536 (header allocated). For new plt/got, the
6377 corresponding ranges are 0 to 32768 and 32780 to 65536. */
6378 if (htab->elf.sgot->size <= 32768)
6380 g_o_t = htab->elf.sgot->size;
6381 if (htab->plt_type == PLT_OLD)
6383 htab->elf.sgot->size += htab->got_header_size;
6386 htab->elf.hgot->root.u.def.value = g_o_t;
6388 if (bfd_link_pic (info))
6390 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6392 sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
6393 sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
6395 if (info->emitrelocations)
6397 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
6399 if (sda != NULL && sda->ref_regular)
6400 sda->root.u.def.section->flags |= SEC_KEEP;
6401 sda = htab->sdata[1].sym;
6402 if (sda != NULL && sda->ref_regular)
6403 sda->root.u.def.section->flags |= SEC_KEEP;
6406 if (htab->glink != NULL
6407 && htab->glink->size != 0
6408 && htab->elf.dynamic_sections_created)
6410 htab->glink_pltresolve = htab->glink->size;
6411 /* Space for the branch table. ??? We don't need entries for
6412 non-dynamic symbols in this table. This case can arise with
6413 static ifuncs or forced local ifuncs. */
6414 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
6415 /* Pad out to align the start of PLTresolve. */
6416 htab->glink->size += -htab->glink->size & (htab->params->ppc476_workaround
6418 htab->glink->size += GLINK_PLTRESOLVE;
6420 if (htab->params->emit_stub_syms)
6422 struct elf_link_hash_entry *sh;
6423 sh = elf_link_hash_lookup (&htab->elf, "__glink",
6424 TRUE, FALSE, FALSE);
6427 if (sh->root.type == bfd_link_hash_new)
6429 sh->root.type = bfd_link_hash_defined;
6430 sh->root.u.def.section = htab->glink;
6431 sh->root.u.def.value = htab->glink_pltresolve;
6432 sh->ref_regular = 1;
6433 sh->def_regular = 1;
6434 sh->ref_regular_nonweak = 1;
6435 sh->forced_local = 1;
6437 sh->root.linker_def = 1;
6439 sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
6440 TRUE, FALSE, FALSE);
6443 if (sh->root.type == bfd_link_hash_new)
6445 sh->root.type = bfd_link_hash_defined;
6446 sh->root.u.def.section = htab->glink;
6447 sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
6448 sh->ref_regular = 1;
6449 sh->def_regular = 1;
6450 sh->ref_regular_nonweak = 1;
6451 sh->forced_local = 1;
6453 sh->root.linker_def = 1;
6458 if (htab->glink != NULL
6459 && htab->glink->size != 0
6460 && htab->glink_eh_frame != NULL
6461 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
6462 && _bfd_elf_eh_frame_present (info))
6464 s = htab->glink_eh_frame;
6465 s->size = sizeof (glink_eh_frame_cie) + 20;
6466 if (bfd_link_pic (info))
6469 if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
6474 /* We've now determined the sizes of the various dynamic sections.
6475 Allocate memory for them. */
6477 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
6479 bfd_boolean strip_section = TRUE;
6481 if ((s->flags & SEC_LINKER_CREATED) == 0)
6484 if (s == htab->elf.splt
6485 || s == htab->elf.sgot)
6487 /* We'd like to strip these sections if they aren't needed, but if
6488 we've exported dynamic symbols from them we must leave them.
6489 It's too late to tell BFD to get rid of the symbols. */
6490 if (htab->elf.hplt != NULL)
6491 strip_section = FALSE;
6492 /* Strip this section if we don't need it; see the
6495 else if (s == htab->elf.iplt
6497 || s == htab->glink_eh_frame
6498 || s == htab->elf.sgotplt
6500 || s == htab->elf.sdynbss
6501 || s == htab->elf.sdynrelro
6502 || s == htab->dynsbss)
6504 /* Strip these too. */
6506 else if (s == htab->sdata[0].section
6507 || s == htab->sdata[1].section)
6509 strip_section = (s->flags & SEC_KEEP) == 0;
6511 else if (CONST_STRNEQ (bfd_get_section_name (htab->elf.dynobj, s),
6516 /* Remember whether there are any relocation sections. */
6519 /* We use the reloc_count field as a counter if we need
6520 to copy relocs into the output file. */
6526 /* It's not one of our sections, so don't allocate space. */
6530 if (s->size == 0 && strip_section)
6532 /* If we don't need this section, strip it from the
6533 output file. This is mostly to handle .rela.bss and
6534 .rela.plt. We must create both sections in
6535 create_dynamic_sections, because they must be created
6536 before the linker maps input sections to output
6537 sections. The linker does that before
6538 adjust_dynamic_symbol is called, and it is that
6539 function which decides whether anything needs to go
6540 into these sections. */
6541 s->flags |= SEC_EXCLUDE;
6545 if ((s->flags & SEC_HAS_CONTENTS) == 0)
6548 /* Allocate memory for the section contents. */
6549 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
6550 if (s->contents == NULL)
6554 if (htab->elf.dynamic_sections_created)
6556 /* Add some entries to the .dynamic section. We fill in the
6557 values later, in ppc_elf_finish_dynamic_sections, but we
6558 must add the entries now so that we get the correct size for
6559 the .dynamic section. The DT_DEBUG entry is filled in by the
6560 dynamic linker and used by the debugger. */
6561 #define add_dynamic_entry(TAG, VAL) \
6562 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6564 if (bfd_link_executable (info))
6566 if (!add_dynamic_entry (DT_DEBUG, 0))
6570 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
6572 if (!add_dynamic_entry (DT_PLTGOT, 0)
6573 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6574 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6575 || !add_dynamic_entry (DT_JMPREL, 0))
6579 if (htab->plt_type == PLT_NEW
6580 && htab->glink != NULL
6581 && htab->glink->size != 0)
6583 if (!add_dynamic_entry (DT_PPC_GOT, 0))
6585 if (!htab->params->no_tls_get_addr_opt
6586 && htab->tls_get_addr != NULL
6587 && htab->tls_get_addr->plt.plist != NULL
6588 && !add_dynamic_entry (DT_PPC_OPT, PPC_OPT_TLS))
6594 if (!add_dynamic_entry (DT_RELA, 0)
6595 || !add_dynamic_entry (DT_RELASZ, 0)
6596 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
6600 /* If any dynamic relocs apply to a read-only section, then we
6601 need a DT_TEXTREL entry. */
6602 if ((info->flags & DF_TEXTREL) == 0)
6603 elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
6606 if ((info->flags & DF_TEXTREL) != 0)
6608 if (!add_dynamic_entry (DT_TEXTREL, 0))
6611 if (htab->is_vxworks
6612 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
6615 #undef add_dynamic_entry
6617 if (htab->glink_eh_frame != NULL
6618 && htab->glink_eh_frame->contents != NULL)
6620 unsigned char *p = htab->glink_eh_frame->contents;
6623 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
6624 /* CIE length (rewrite in case little-endian). */
6625 bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
6626 p += sizeof (glink_eh_frame_cie);
6628 val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
6629 bfd_put_32 (htab->elf.dynobj, val, p);
6632 val = p - htab->glink_eh_frame->contents;
6633 bfd_put_32 (htab->elf.dynobj, val, p);
6635 /* Offset to .glink. Set later. */
6638 bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
6643 if (bfd_link_pic (info)
6644 && htab->elf.dynamic_sections_created)
6646 bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
6648 *p++ = DW_CFA_advance_loc + adv;
6651 *p++ = DW_CFA_advance_loc1;
6654 else if (adv < 65536)
6656 *p++ = DW_CFA_advance_loc2;
6657 bfd_put_16 (htab->elf.dynobj, adv, p);
6662 *p++ = DW_CFA_advance_loc4;
6663 bfd_put_32 (htab->elf.dynobj, adv, p);
6666 *p++ = DW_CFA_register;
6669 *p++ = DW_CFA_advance_loc + 4;
6670 *p++ = DW_CFA_restore_extended;
6673 BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
6674 == htab->glink_eh_frame->size);
6680 /* Arrange to have _SDA_BASE_ or _SDA2_BASE_ stripped from the output
6681 if it looks like nothing is using them. */
6684 maybe_strip_sdasym (bfd *output_bfd, elf_linker_section_t *lsect)
6686 struct elf_link_hash_entry *sda = lsect->sym;
6688 if (sda != NULL && !sda->ref_regular && sda->dynindx == -1)
6692 s = bfd_get_section_by_name (output_bfd, lsect->name);
6693 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6695 s = bfd_get_section_by_name (output_bfd, lsect->bss_name);
6696 if (s == NULL || bfd_section_removed_from_list (output_bfd, s))
6698 sda->def_regular = 0;
6699 /* This is somewhat magic. See elf_link_output_extsym. */
6700 sda->ref_dynamic = 1;
6701 sda->forced_local = 0;
6708 ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *info)
6710 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
6714 maybe_strip_sdasym (info->output_bfd, &htab->sdata[0]);
6715 maybe_strip_sdasym (info->output_bfd, &htab->sdata[1]);
6720 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6723 ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
6725 if (h->plt.plist != NULL
6727 && (!h->pointer_equality_needed
6728 || !h->ref_regular_nonweak))
6731 return _bfd_elf_hash_symbol (h);
6734 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
6736 /* Relaxation trampolines. r12 is available for clobbering (r11, is
6737 used for some functions that are allowed to break the ABI). */
6738 static const int shared_stub_entry[] =
6740 0x7c0802a6, /* mflr 0 */
6741 0x429f0005, /* bcl 20, 31, .Lxxx */
6742 0x7d8802a6, /* mflr 12 */
6743 0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
6744 0x398c0000, /* addi 12, 12, (xxx-.Lxxx)@l */
6745 0x7c0803a6, /* mtlr 0 */
6746 0x7d8903a6, /* mtctr 12 */
6747 0x4e800420, /* bctr */
6750 static const int stub_entry[] =
6752 0x3d800000, /* lis 12,xxx@ha */
6753 0x398c0000, /* addi 12,12,xxx@l */
6754 0x7d8903a6, /* mtctr 12 */
6755 0x4e800420, /* bctr */
6758 struct ppc_elf_relax_info
6760 unsigned int workaround_size;
6761 unsigned int picfixup_size;
6764 /* This function implements long branch trampolines, and the ppc476
6765 icache bug workaround. Any section needing trampolines or patch
6766 space for the workaround has its size extended so that we can
6767 add trampolines at the end of the section. */
6770 ppc_elf_relax_section (bfd *abfd,
6772 struct bfd_link_info *link_info,
6775 struct one_branch_fixup
6777 struct one_branch_fixup *next;
6779 /* Final link, can use the symbol offset. For a
6780 relocatable link we use the symbol's index. */
6785 Elf_Internal_Shdr *symtab_hdr;
6786 bfd_byte *contents = NULL;
6787 Elf_Internal_Sym *isymbuf = NULL;
6788 Elf_Internal_Rela *internal_relocs = NULL;
6789 Elf_Internal_Rela *irel, *irelend = NULL;
6790 struct one_branch_fixup *branch_fixups = NULL;
6791 struct ppc_elf_relax_info *relax_info = NULL;
6792 unsigned changes = 0;
6793 bfd_boolean workaround_change;
6794 struct ppc_elf_link_hash_table *htab;
6795 bfd_size_type trampbase, trampoff, newsize, picfixup_size;
6797 bfd_boolean maybe_pasted;
6801 /* No need to do anything with non-alloc or non-code sections. */
6802 if ((isec->flags & SEC_ALLOC) == 0
6803 || (isec->flags & SEC_CODE) == 0
6804 || (isec->flags & SEC_LINKER_CREATED) != 0
6808 /* We cannot represent the required PIC relocs in the output, so don't
6809 do anything. The linker doesn't support mixing -shared and -r
6811 if (bfd_link_relocatable (link_info) && bfd_link_pic (link_info))
6814 htab = ppc_elf_hash_table (link_info);
6818 isec->size = (isec->size + 3) & -4;
6819 if (isec->rawsize == 0)
6820 isec->rawsize = isec->size;
6821 trampbase = isec->size;
6823 BFD_ASSERT (isec->sec_info_type == SEC_INFO_TYPE_NONE
6824 || isec->sec_info_type == SEC_INFO_TYPE_TARGET);
6825 isec->sec_info_type = SEC_INFO_TYPE_TARGET;
6827 if (htab->params->ppc476_workaround
6828 || htab->params->pic_fixup > 0)
6830 if (elf_section_data (isec)->sec_info == NULL)
6832 elf_section_data (isec)->sec_info
6833 = bfd_zalloc (abfd, sizeof (struct ppc_elf_relax_info));
6834 if (elf_section_data (isec)->sec_info == NULL)
6837 relax_info = elf_section_data (isec)->sec_info;
6838 trampbase -= relax_info->workaround_size;
6841 maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
6842 || strcmp (isec->output_section->name, ".fini") == 0);
6843 /* Space for a branch around any trampolines. */
6844 trampoff = trampbase;
6845 if (maybe_pasted && trampbase == isec->rawsize)
6848 symtab_hdr = &elf_symtab_hdr (abfd);
6850 if (htab->params->branch_trampolines
6851 || htab->params->pic_fixup > 0)
6853 /* Get a copy of the native relocations. */
6854 if (isec->reloc_count != 0)
6856 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
6857 link_info->keep_memory);
6858 if (internal_relocs == NULL)
6862 got2 = bfd_get_section_by_name (abfd, ".got2");
6864 irelend = internal_relocs + isec->reloc_count;
6865 for (irel = internal_relocs; irel < irelend; irel++)
6867 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
6870 struct one_branch_fixup *f;
6871 size_t insn_offset = 0;
6872 bfd_vma max_branch_offset = 0, val;
6875 struct elf_link_hash_entry *h;
6876 struct plt_entry **plist;
6877 unsigned char sym_type;
6882 case R_PPC_LOCAL24PC:
6883 case R_PPC_PLTREL24:
6884 max_branch_offset = 1 << 25;
6888 case R_PPC_REL14_BRTAKEN:
6889 case R_PPC_REL14_BRNTAKEN:
6890 max_branch_offset = 1 << 15;
6893 case R_PPC_ADDR16_HA:
6894 if (htab->params->pic_fixup > 0)
6902 /* Get the value of the symbol referred to by the reloc. */
6904 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
6906 /* A local symbol. */
6907 Elf_Internal_Sym *isym;
6909 /* Read this BFD's local symbols. */
6910 if (isymbuf == NULL)
6912 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
6913 if (isymbuf == NULL)
6914 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
6915 symtab_hdr->sh_info, 0,
6920 isym = isymbuf + ELF32_R_SYM (irel->r_info);
6921 if (isym->st_shndx == SHN_UNDEF)
6922 tsec = bfd_und_section_ptr;
6923 else if (isym->st_shndx == SHN_ABS)
6924 tsec = bfd_abs_section_ptr;
6925 else if (isym->st_shndx == SHN_COMMON)
6926 tsec = bfd_com_section_ptr;
6928 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
6930 toff = isym->st_value;
6931 sym_type = ELF_ST_TYPE (isym->st_info);
6935 /* Global symbol handling. */
6938 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
6939 h = elf_sym_hashes (abfd)[indx];
6941 while (h->root.type == bfd_link_hash_indirect
6942 || h->root.type == bfd_link_hash_warning)
6943 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6945 if (h->root.type == bfd_link_hash_defined
6946 || h->root.type == bfd_link_hash_defweak)
6948 tsec = h->root.u.def.section;
6949 toff = h->root.u.def.value;
6951 else if (h->root.type == bfd_link_hash_undefined
6952 || h->root.type == bfd_link_hash_undefweak)
6954 tsec = bfd_und_section_ptr;
6955 toff = bfd_link_relocatable (link_info) ? indx : 0;
6960 /* If this branch is to __tls_get_addr then we may later
6961 optimise away the call. We won't be needing a long-
6962 branch stub in that case. */
6963 if (bfd_link_executable (link_info)
6964 && h == htab->tls_get_addr
6965 && irel != internal_relocs)
6967 unsigned long t_symndx = ELF32_R_SYM (irel[-1].r_info);
6968 unsigned long t_rtype = ELF32_R_TYPE (irel[-1].r_info);
6969 unsigned int tls_mask = 0;
6971 /* The previous reloc should be one of R_PPC_TLSGD or
6972 R_PPC_TLSLD, or for older object files, a reloc
6973 on the __tls_get_addr arg setup insn. Get tls
6974 mask bits from the symbol on that reloc. */
6975 if (t_symndx < symtab_hdr->sh_info)
6977 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
6979 if (local_got_offsets != NULL)
6981 struct plt_entry **local_plt = (struct plt_entry **)
6982 (local_got_offsets + symtab_hdr->sh_info);
6983 char *lgot_masks = (char *)
6984 (local_plt + symtab_hdr->sh_info);
6985 tls_mask = lgot_masks[t_symndx];
6990 struct elf_link_hash_entry *th
6991 = elf_sym_hashes (abfd)[t_symndx - symtab_hdr->sh_info];
6993 while (th->root.type == bfd_link_hash_indirect
6994 || th->root.type == bfd_link_hash_warning)
6995 th = (struct elf_link_hash_entry *) th->root.u.i.link;
6998 = ((struct ppc_elf_link_hash_entry *) th)->tls_mask;
7001 /* The mask bits tell us if the call will be
7003 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0
7004 && (t_rtype == R_PPC_TLSGD
7005 || t_rtype == R_PPC_GOT_TLSGD16
7006 || t_rtype == R_PPC_GOT_TLSGD16_LO))
7008 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0
7009 && (t_rtype == R_PPC_TLSLD
7010 || t_rtype == R_PPC_GOT_TLSLD16
7011 || t_rtype == R_PPC_GOT_TLSLD16_LO))
7018 if (r_type == R_PPC_ADDR16_HA)
7023 && ppc_elf_hash_entry (h)->has_addr16_ha
7024 && ppc_elf_hash_entry (h)->has_addr16_lo)
7025 picfixup_size += 12;
7029 /* The condition here under which we call find_plt_ent must
7030 match that in relocate_section. If we call find_plt_ent here
7031 but not in relocate_section, or vice versa, then the branch
7032 destination used here may be incorrect. */
7036 /* We know is_branch_reloc (r_type) is true. */
7037 if (h->type == STT_GNU_IFUNC
7038 || r_type == R_PPC_PLTREL24)
7039 plist = &h->plt.plist;
7041 else if (sym_type == STT_GNU_IFUNC
7042 && elf_local_got_offsets (abfd) != NULL)
7044 bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
7045 struct plt_entry **local_plt = (struct plt_entry **)
7046 (local_got_offsets + symtab_hdr->sh_info);
7047 plist = local_plt + ELF32_R_SYM (irel->r_info);
7052 struct plt_entry *ent;
7054 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (link_info))
7055 addend = irel->r_addend;
7056 ent = find_plt_ent (plist, got2, addend);
7059 if (htab->plt_type == PLT_NEW
7061 || !htab->elf.dynamic_sections_created
7062 || h->dynindx == -1)
7065 toff = ent->glink_offset;
7069 tsec = htab->elf.splt;
7070 toff = ent->plt.offset;
7075 /* If the branch and target are in the same section, you have
7076 no hope of adding stubs. We'll error out later should the
7081 /* There probably isn't any reason to handle symbols in
7082 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
7083 attribute for a code section, and we are only looking at
7084 branches. However, implement it correctly here as a
7085 reference for other target relax_section functions. */
7086 if (0 && tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
7088 /* At this stage in linking, no SEC_MERGE symbol has been
7089 adjusted, so all references to such symbols need to be
7090 passed through _bfd_merged_section_offset. (Later, in
7091 relocate_section, all SEC_MERGE symbols *except* for
7092 section symbols have been adjusted.)
7094 gas may reduce relocations against symbols in SEC_MERGE
7095 sections to a relocation against the section symbol when
7096 the original addend was zero. When the reloc is against
7097 a section symbol we should include the addend in the
7098 offset passed to _bfd_merged_section_offset, since the
7099 location of interest is the original symbol. On the
7100 other hand, an access to "sym+addend" where "sym" is not
7101 a section symbol should not include the addend; Such an
7102 access is presumed to be an offset from "sym"; The
7103 location of interest is just "sym". */
7104 if (sym_type == STT_SECTION)
7105 toff += irel->r_addend;
7108 = _bfd_merged_section_offset (abfd, &tsec,
7109 elf_section_data (tsec)->sec_info,
7112 if (sym_type != STT_SECTION)
7113 toff += irel->r_addend;
7115 /* PLTREL24 addends are special. */
7116 else if (r_type != R_PPC_PLTREL24)
7117 toff += irel->r_addend;
7119 /* Attempted -shared link of non-pic code loses. */
7120 if ((!bfd_link_relocatable (link_info)
7121 && tsec == bfd_und_section_ptr)
7122 || tsec->output_section == NULL
7123 || (tsec->owner != NULL
7124 && (tsec->owner->flags & BFD_PLUGIN) != 0))
7127 roff = irel->r_offset;
7129 /* If the branch is in range, no need to do anything. */
7130 if (tsec != bfd_und_section_ptr
7131 && (!bfd_link_relocatable (link_info)
7132 /* A relocatable link may have sections moved during
7133 final link, so do not presume they remain in range. */
7134 || tsec->output_section == isec->output_section))
7136 bfd_vma symaddr, reladdr;
7138 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7139 reladdr = isec->output_section->vma + isec->output_offset + roff;
7140 if (symaddr - reladdr + max_branch_offset
7141 < 2 * max_branch_offset)
7145 /* Look for an existing fixup to this address. */
7146 for (f = branch_fixups; f ; f = f->next)
7147 if (f->tsec == tsec && f->toff == toff)
7153 unsigned long stub_rtype;
7155 val = trampoff - roff;
7156 if (val >= max_branch_offset)
7157 /* Oh dear, we can't reach a trampoline. Don't try to add
7158 one. We'll report an error later. */
7161 if (bfd_link_pic (link_info))
7163 size = 4 * ARRAY_SIZE (shared_stub_entry);
7168 size = 4 * ARRAY_SIZE (stub_entry);
7171 stub_rtype = R_PPC_RELAX;
7172 if (tsec == htab->elf.splt
7173 || tsec == htab->glink)
7175 stub_rtype = R_PPC_RELAX_PLT;
7176 if (r_type == R_PPC_PLTREL24)
7177 stub_rtype = R_PPC_RELAX_PLTREL24;
7180 /* Hijack the old relocation. Since we need two
7181 relocations for this use a "composite" reloc. */
7182 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
7184 irel->r_offset = trampoff + insn_offset;
7185 if (r_type == R_PPC_PLTREL24
7186 && stub_rtype != R_PPC_RELAX_PLTREL24)
7189 /* Record the fixup so we don't do it again this section. */
7190 f = bfd_malloc (sizeof (*f));
7191 f->next = branch_fixups;
7194 f->trampoff = trampoff;
7202 val = f->trampoff - roff;
7203 if (val >= max_branch_offset)
7206 /* Nop out the reloc, since we're finalizing things here. */
7207 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7210 /* Get the section contents. */
7211 if (contents == NULL)
7213 /* Get cached copy if it exists. */
7214 if (elf_section_data (isec)->this_hdr.contents != NULL)
7215 contents = elf_section_data (isec)->this_hdr.contents;
7216 /* Go get them off disk. */
7217 else if (!bfd_malloc_and_get_section (abfd, isec, &contents))
7221 /* Fix up the existing branch to hit the trampoline. */
7222 hit_addr = contents + roff;
7226 case R_PPC_LOCAL24PC:
7227 case R_PPC_PLTREL24:
7228 t0 = bfd_get_32 (abfd, hit_addr);
7230 t0 |= val & 0x3fffffc;
7231 bfd_put_32 (abfd, t0, hit_addr);
7235 case R_PPC_REL14_BRTAKEN:
7236 case R_PPC_REL14_BRNTAKEN:
7237 t0 = bfd_get_32 (abfd, hit_addr);
7240 bfd_put_32 (abfd, t0, hit_addr);
7245 while (branch_fixups != NULL)
7247 struct one_branch_fixup *f = branch_fixups;
7248 branch_fixups = branch_fixups->next;
7253 workaround_change = FALSE;
7255 if (htab->params->ppc476_workaround
7256 && (!bfd_link_relocatable (link_info)
7257 || isec->output_section->alignment_power >= htab->params->pagesize_p2))
7259 bfd_vma addr, end_addr;
7260 unsigned int crossings;
7261 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
7263 addr = isec->output_section->vma + isec->output_offset;
7264 end_addr = addr + trampoff;
7266 crossings = ((end_addr & -pagesize) - addr) >> htab->params->pagesize_p2;
7269 /* Keep space aligned, to ensure the patch code itself does
7270 not cross a page. Don't decrease size calculated on a
7271 previous pass as otherwise we might never settle on a layout. */
7272 newsize = 15 - ((end_addr - 1) & 15);
7273 newsize += crossings * 16;
7274 if (relax_info->workaround_size < newsize)
7276 relax_info->workaround_size = newsize;
7277 workaround_change = TRUE;
7279 /* Ensure relocate_section is called. */
7280 isec->flags |= SEC_RELOC;
7282 newsize = trampoff + relax_info->workaround_size;
7285 if (htab->params->pic_fixup > 0)
7287 picfixup_size -= relax_info->picfixup_size;
7288 if (picfixup_size != 0)
7289 relax_info->picfixup_size += picfixup_size;
7290 newsize += relax_info->picfixup_size;
7293 if (changes != 0 || picfixup_size != 0 || workaround_change)
7294 isec->size = newsize;
7297 && symtab_hdr->contents != (unsigned char *) isymbuf)
7299 if (! link_info->keep_memory)
7303 /* Cache the symbols for elf_link_input_bfd. */
7304 symtab_hdr->contents = (unsigned char *) isymbuf;
7308 if (contents != NULL
7309 && elf_section_data (isec)->this_hdr.contents != contents)
7311 if (!changes && !link_info->keep_memory)
7315 /* Cache the section contents for elf_link_input_bfd. */
7316 elf_section_data (isec)->this_hdr.contents = contents;
7320 changes += picfixup_size;
7323 /* Append sufficient NOP relocs so we can write out relocation
7324 information for the trampolines. */
7325 Elf_Internal_Shdr *rel_hdr;
7326 Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
7327 * sizeof (*new_relocs));
7332 memcpy (new_relocs, internal_relocs,
7333 isec->reloc_count * sizeof (*new_relocs));
7334 for (ix = changes; ix--;)
7336 irel = new_relocs + ix + isec->reloc_count;
7338 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
7340 if (internal_relocs != elf_section_data (isec)->relocs)
7341 free (internal_relocs);
7342 elf_section_data (isec)->relocs = new_relocs;
7343 isec->reloc_count += changes;
7344 rel_hdr = _bfd_elf_single_rel_hdr (isec);
7345 rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
7347 else if (internal_relocs != NULL
7348 && elf_section_data (isec)->relocs != internal_relocs)
7349 free (internal_relocs);
7351 *again = changes != 0 || workaround_change;
7355 while (branch_fixups != NULL)
7357 struct one_branch_fixup *f = branch_fixups;
7358 branch_fixups = branch_fixups->next;
7361 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
7363 if (contents != NULL
7364 && elf_section_data (isec)->this_hdr.contents != contents)
7366 if (internal_relocs != NULL
7367 && elf_section_data (isec)->relocs != internal_relocs)
7368 free (internal_relocs);
7372 /* What to do when ld finds relocations against symbols defined in
7373 discarded sections. */
7376 ppc_elf_action_discarded (asection *sec)
7378 if (strcmp (".fixup", sec->name) == 0)
7381 if (strcmp (".got2", sec->name) == 0)
7384 return _bfd_elf_default_action_discarded (sec);
7387 /* Fill in the address for a pointer generated in a linker section. */
7390 elf_finish_pointer_linker_section (bfd *input_bfd,
7391 elf_linker_section_t *lsect,
7392 struct elf_link_hash_entry *h,
7394 const Elf_Internal_Rela *rel)
7396 elf_linker_section_pointers_t *linker_section_ptr;
7398 BFD_ASSERT (lsect != NULL);
7402 /* Handle global symbol. */
7403 struct ppc_elf_link_hash_entry *eh;
7405 eh = (struct ppc_elf_link_hash_entry *) h;
7406 BFD_ASSERT (eh->elf.def_regular);
7407 linker_section_ptr = eh->linker_section_pointer;
7411 /* Handle local symbol. */
7412 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
7414 BFD_ASSERT (is_ppc_elf (input_bfd));
7415 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
7416 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
7419 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
7422 BFD_ASSERT (linker_section_ptr != NULL);
7424 /* Offset will always be a multiple of four, so use the bottom bit
7425 as a "written" flag. */
7426 if ((linker_section_ptr->offset & 1) == 0)
7428 bfd_put_32 (lsect->section->owner,
7429 relocation + linker_section_ptr->addend,
7430 lsect->section->contents + linker_section_ptr->offset);
7431 linker_section_ptr->offset += 1;
7434 relocation = (lsect->section->output_section->vma
7435 + lsect->section->output_offset
7436 + linker_section_ptr->offset - 1
7437 - SYM_VAL (lsect->sym));
7441 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
7442 lsect->name, (long) relocation, (long) relocation);
7448 #define PPC_LO(v) ((v) & 0xffff)
7449 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7450 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7453 write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
7454 struct bfd_link_info *info)
7456 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
7457 bfd *output_bfd = info->output_bfd;
7460 plt = ((ent->plt.offset & ~1)
7461 + plt_sec->output_section->vma
7462 + plt_sec->output_offset);
7464 if (bfd_link_pic (info))
7468 if (ent->addend >= 32768)
7470 + ent->sec->output_section->vma
7471 + ent->sec->output_offset);
7472 else if (htab->elf.hgot != NULL)
7473 got = SYM_VAL (htab->elf.hgot);
7477 if (plt + 0x8000 < 0x10000)
7479 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
7481 bfd_put_32 (output_bfd, MTCTR_11, p);
7483 bfd_put_32 (output_bfd, BCTR, p);
7485 bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
7490 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
7492 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7494 bfd_put_32 (output_bfd, MTCTR_11, p);
7496 bfd_put_32 (output_bfd, BCTR, p);
7502 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
7504 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
7506 bfd_put_32 (output_bfd, MTCTR_11, p);
7508 bfd_put_32 (output_bfd, BCTR, p);
7513 /* Return true if symbol is defined statically. */
7516 is_static_defined (struct elf_link_hash_entry *h)
7518 return ((h->root.type == bfd_link_hash_defined
7519 || h->root.type == bfd_link_hash_defweak)
7520 && h->root.u.def.section != NULL
7521 && h->root.u.def.section->output_section != NULL);
7524 /* If INSN is an opcode that may be used with an @tls operand, return
7525 the transformed insn for TLS optimisation, otherwise return 0. If
7526 REG is non-zero only match an insn with RB or RA equal to REG. */
7529 _bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
7533 if ((insn & (0x3f << 26)) != 31 << 26)
7536 if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
7537 rtra = insn & ((1 << 26) - (1 << 16));
7538 else if (((insn >> 16) & 0x1f) == reg)
7539 rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
7543 if ((insn & (0x3ff << 1)) == 266 << 1)
7546 else if ((insn & (0x1f << 1)) == 23 << 1
7547 && ((insn & (0x1f << 6)) < 14 << 6
7548 || ((insn & (0x1f << 6)) >= 16 << 6
7549 && (insn & (0x1f << 6)) < 24 << 6)))
7550 /* load and store indexed -> dform. */
7551 insn = (32 | ((insn >> 6) & 0x1f)) << 26;
7552 else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
7553 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7554 insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
7555 else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
7557 insn = (58 << 26) | 2;
7564 /* If INSN is an opcode that may be used with an @tprel operand, return
7565 the transformed insn for an undefined weak symbol, ie. with the
7566 thread pointer REG operand removed. Otherwise return 0. */
7569 _bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
7571 if ((insn & (0x1f << 16)) == reg << 16
7572 && ((insn & (0x3f << 26)) == 14u << 26 /* addi */
7573 || (insn & (0x3f << 26)) == 15u << 26 /* addis */
7574 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
7575 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
7576 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
7577 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
7578 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
7579 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
7580 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
7581 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
7582 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
7583 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
7584 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
7585 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
7586 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
7587 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
7589 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
7590 && ((insn & 3) == 0 || (insn & 3) == 3))))
7592 insn &= ~(0x1f << 16);
7594 else if ((insn & (0x1f << 21)) == reg << 21
7595 && ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
7596 || (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
7597 || (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
7599 insn &= ~(0x1f << 21);
7600 insn |= (insn & (0x1f << 16)) << 5;
7601 if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
7602 insn -= 2 >> 26; /* convert to ori,oris */
7610 is_insn_ds_form (unsigned int insn)
7612 return ((insn & (0x3f << 26)) == 58u << 26 /* ld,ldu,lwa */
7613 || (insn & (0x3f << 26)) == 62u << 26 /* std,stdu,stq */
7614 || (insn & (0x3f << 26)) == 57u << 26 /* lfdp */
7615 || (insn & (0x3f << 26)) == 61u << 26 /* stfdp */);
7619 is_insn_dq_form (unsigned int insn)
7621 return ((insn & (0x3f << 26)) == 56u << 26 /* lq */
7622 || ((insn & (0x3f << 26)) == (61u << 26) /* lxv, stxv */
7623 && (insn & 3) == 1));
7626 /* The RELOCATE_SECTION function is called by the ELF backend linker
7627 to handle the relocations for a section.
7629 The relocs are always passed as Rela structures; if the section
7630 actually uses Rel structures, the r_addend field will always be
7633 This function is responsible for adjust the section contents as
7634 necessary, and (if using Rela relocs and generating a
7635 relocatable output file) adjusting the reloc addend as
7638 This function does not have to worry about setting the reloc
7639 address or the reloc symbol index.
7641 LOCAL_SYMS is a pointer to the swapped in local symbols.
7643 LOCAL_SECTIONS is an array giving the section in the input file
7644 corresponding to the st_shndx field of each local symbol.
7646 The global hash table entry for the global symbols can be found
7647 via elf_sym_hashes (input_bfd).
7649 When generating relocatable output, this function must handle
7650 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7651 going to be the section symbol corresponding to the output
7652 section, which means that the addend must be adjusted
7656 ppc_elf_relocate_section (bfd *output_bfd,
7657 struct bfd_link_info *info,
7659 asection *input_section,
7661 Elf_Internal_Rela *relocs,
7662 Elf_Internal_Sym *local_syms,
7663 asection **local_sections)
7665 Elf_Internal_Shdr *symtab_hdr;
7666 struct elf_link_hash_entry **sym_hashes;
7667 struct ppc_elf_link_hash_table *htab;
7668 Elf_Internal_Rela *rel;
7669 Elf_Internal_Rela *wrel;
7670 Elf_Internal_Rela *relend;
7671 Elf_Internal_Rela outrel;
7673 bfd_vma *local_got_offsets;
7674 bfd_boolean ret = TRUE;
7675 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
7676 bfd_boolean is_vxworks_tls;
7677 unsigned int picfixup_size = 0;
7678 struct ppc_elf_relax_info *relax_info = NULL;
7681 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
7682 "%ld relocations%s",
7683 input_bfd, input_section,
7684 (long) input_section->reloc_count,
7685 (bfd_link_relocatable (info)) ? " (relocatable)" : "");
7688 got2 = bfd_get_section_by_name (input_bfd, ".got2");
7690 /* Initialize howto table if not already done. */
7691 if (!ppc_elf_howto_table[R_PPC_ADDR32])
7692 ppc_elf_howto_init ();
7694 htab = ppc_elf_hash_table (info);
7695 local_got_offsets = elf_local_got_offsets (input_bfd);
7696 symtab_hdr = &elf_symtab_hdr (input_bfd);
7697 sym_hashes = elf_sym_hashes (input_bfd);
7698 /* We have to handle relocations in vxworks .tls_vars sections
7699 specially, because the dynamic loader is 'weird'. */
7700 is_vxworks_tls = (htab->is_vxworks && bfd_link_pic (info)
7701 && !strcmp (input_section->output_section->name,
7703 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET)
7704 relax_info = elf_section_data (input_section)->sec_info;
7705 rel = wrel = relocs;
7706 relend = relocs + input_section->reloc_count;
7707 for (; rel < relend; wrel++, rel++)
7709 enum elf_ppc_reloc_type r_type;
7711 bfd_reloc_status_type r;
7712 Elf_Internal_Sym *sym;
7714 struct elf_link_hash_entry *h;
7715 const char *sym_name;
7716 reloc_howto_type *howto;
7717 unsigned long r_symndx;
7719 bfd_vma branch_bit, from;
7720 bfd_boolean unresolved_reloc;
7722 unsigned int tls_type, tls_mask, tls_gd;
7723 struct plt_entry **ifunc;
7724 struct reloc_howto_struct alt_howto;
7727 r_type = ELF32_R_TYPE (rel->r_info);
7731 unresolved_reloc = FALSE;
7733 r_symndx = ELF32_R_SYM (rel->r_info);
7735 if (r_symndx < symtab_hdr->sh_info)
7737 sym = local_syms + r_symndx;
7738 sec = local_sections[r_symndx];
7739 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
7741 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7745 bfd_boolean ignored;
7747 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7748 r_symndx, symtab_hdr, sym_hashes,
7750 unresolved_reloc, warned, ignored);
7752 sym_name = h->root.root.string;
7755 if (sec != NULL && discarded_section (sec))
7757 /* For relocs against symbols from removed linkonce sections,
7758 or sections discarded by a linker script, we just want the
7759 section contents zeroed. Avoid any special processing. */
7761 if (r_type < R_PPC_max)
7762 howto = ppc_elf_howto_table[r_type];
7764 _bfd_clear_contents (howto, input_bfd, input_section,
7765 contents + rel->r_offset);
7766 wrel->r_offset = rel->r_offset;
7770 /* For ld -r, remove relocations in debug sections against
7771 symbols defined in discarded sections. Not done for
7772 non-debug to preserve relocs in .eh_frame which the
7773 eh_frame editing code expects to be present. */
7774 if (bfd_link_relocatable (info)
7775 && (input_section->flags & SEC_DEBUGGING))
7781 if (bfd_link_relocatable (info))
7784 && r_type == R_PPC_PLTREL24
7785 && rel->r_addend != 0)
7787 /* R_PPC_PLTREL24 is rather special. If non-zero, the
7788 addend specifies the GOT pointer offset within .got2. */
7789 rel->r_addend += got2->output_offset;
7791 if (r_type != R_PPC_RELAX_PLT
7792 && r_type != R_PPC_RELAX_PLTREL24
7793 && r_type != R_PPC_RELAX)
7797 /* TLS optimizations. Replace instruction sequences and relocs
7798 based on information we collected in tls_optimize. We edit
7799 RELOCS so that --emit-relocs will output something sensible
7800 for the final instruction stream. */
7804 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
7805 else if (local_got_offsets != NULL)
7807 struct plt_entry **local_plt;
7810 = (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
7811 lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
7812 tls_mask = lgot_masks[r_symndx];
7815 /* Ensure reloc mapping code below stays sane. */
7816 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
7817 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
7818 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
7819 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
7820 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
7821 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
7822 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
7823 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
7830 case R_PPC_GOT_TPREL16:
7831 case R_PPC_GOT_TPREL16_LO:
7832 if ((tls_mask & TLS_TLS) != 0
7833 && (tls_mask & TLS_TPREL) == 0)
7837 insn = bfd_get_32 (input_bfd,
7838 contents + rel->r_offset - d_offset);
7840 insn |= 0x3c020000; /* addis 0,2,0 */
7841 bfd_put_32 (input_bfd, insn,
7842 contents + rel->r_offset - d_offset);
7843 r_type = R_PPC_TPREL16_HA;
7844 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7849 if ((tls_mask & TLS_TLS) != 0
7850 && (tls_mask & TLS_TPREL) == 0)
7854 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7855 insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
7858 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
7859 r_type = R_PPC_TPREL16_LO;
7860 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7862 /* Was PPC_TLS which sits on insn boundary, now
7863 PPC_TPREL16_LO which is at low-order half-word. */
7864 rel->r_offset += d_offset;
7868 case R_PPC_GOT_TLSGD16_HI:
7869 case R_PPC_GOT_TLSGD16_HA:
7870 tls_gd = TLS_TPRELGD;
7871 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7875 case R_PPC_GOT_TLSLD16_HI:
7876 case R_PPC_GOT_TLSLD16_HA:
7877 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7880 if ((tls_mask & tls_gd) != 0)
7881 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7882 + R_PPC_GOT_TPREL16);
7885 rel->r_offset -= d_offset;
7886 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
7887 r_type = R_PPC_NONE;
7889 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7893 case R_PPC_GOT_TLSGD16:
7894 case R_PPC_GOT_TLSGD16_LO:
7895 tls_gd = TLS_TPRELGD;
7896 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7900 case R_PPC_GOT_TLSLD16:
7901 case R_PPC_GOT_TLSLD16_LO:
7902 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
7904 unsigned int insn1, insn2;
7908 offset = (bfd_vma) -1;
7909 /* If not using the newer R_PPC_TLSGD/LD to mark
7910 __tls_get_addr calls, we must trust that the call
7911 stays with its arg setup insns, ie. that the next
7912 reloc is the __tls_get_addr call associated with
7913 the current reloc. Edit both insns. */
7914 if (input_section->has_tls_get_addr_call
7916 && branch_reloc_hash_match (input_bfd, rel + 1,
7917 htab->tls_get_addr))
7918 offset = rel[1].r_offset;
7919 /* We read the low GOT_TLS insn because we need to keep
7920 the destination reg. It may be something other than
7921 the usual r3, and moved to r3 before the call by
7922 intervening code. */
7923 insn1 = bfd_get_32 (input_bfd,
7924 contents + rel->r_offset - d_offset);
7925 if ((tls_mask & tls_gd) != 0)
7928 insn1 &= (0x1f << 21) | (0x1f << 16);
7929 insn1 |= 32 << 26; /* lwz */
7930 if (offset != (bfd_vma) -1)
7932 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
7933 insn2 = 0x7c631214; /* add 3,3,2 */
7934 bfd_put_32 (input_bfd, insn2, contents + offset);
7936 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
7937 + R_PPC_GOT_TPREL16);
7938 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7943 insn1 &= 0x1f << 21;
7944 insn1 |= 0x3c020000; /* addis r,2,0 */
7947 /* Was an LD reloc. */
7949 r_symndx < symtab_hdr->sh_info;
7951 if (local_sections[r_symndx] == sec)
7953 if (r_symndx >= symtab_hdr->sh_info)
7954 r_symndx = STN_UNDEF;
7955 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7956 if (r_symndx != STN_UNDEF)
7957 rel->r_addend -= (local_syms[r_symndx].st_value
7958 + sec->output_offset
7959 + sec->output_section->vma);
7961 r_type = R_PPC_TPREL16_HA;
7962 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
7963 if (offset != (bfd_vma) -1)
7965 rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
7966 rel[1].r_offset = offset + d_offset;
7967 rel[1].r_addend = rel->r_addend;
7968 insn2 = 0x38630000; /* addi 3,3,0 */
7969 bfd_put_32 (input_bfd, insn2, contents + offset);
7972 bfd_put_32 (input_bfd, insn1,
7973 contents + rel->r_offset - d_offset);
7976 /* We changed the symbol on an LD reloc. Start over
7977 in order to get h, sym, sec etc. right. */
7984 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
7987 bfd_vma offset = rel->r_offset;
7989 if ((tls_mask & TLS_TPRELGD) != 0)
7992 r_type = R_PPC_NONE;
7993 insn2 = 0x7c631214; /* add 3,3,2 */
7998 r_type = R_PPC_TPREL16_LO;
7999 rel->r_offset += d_offset;
8000 insn2 = 0x38630000; /* addi 3,3,0 */
8002 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
8003 bfd_put_32 (input_bfd, insn2, contents + offset);
8004 /* Zap the reloc on the _tls_get_addr call too. */
8005 BFD_ASSERT (offset == rel[1].r_offset);
8006 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8011 if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
8016 r_symndx < symtab_hdr->sh_info;
8018 if (local_sections[r_symndx] == sec)
8020 if (r_symndx >= symtab_hdr->sh_info)
8021 r_symndx = STN_UNDEF;
8022 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8023 if (r_symndx != STN_UNDEF)
8024 rel->r_addend -= (local_syms[r_symndx].st_value
8025 + sec->output_offset
8026 + sec->output_section->vma);
8028 rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
8029 rel->r_offset += d_offset;
8030 insn2 = 0x38630000; /* addi 3,3,0 */
8031 bfd_put_32 (input_bfd, insn2,
8032 contents + rel->r_offset - d_offset);
8033 /* Zap the reloc on the _tls_get_addr call too. */
8034 BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
8035 rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
8041 /* Handle other relocations that tweak non-addend part of insn. */
8048 /* Branch taken prediction relocations. */
8049 case R_PPC_ADDR14_BRTAKEN:
8050 case R_PPC_REL14_BRTAKEN:
8051 branch_bit = BRANCH_PREDICT_BIT;
8054 /* Branch not taken prediction relocations. */
8055 case R_PPC_ADDR14_BRNTAKEN:
8056 case R_PPC_REL14_BRNTAKEN:
8060 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
8061 insn &= ~BRANCH_PREDICT_BIT;
8064 from = (rel->r_offset
8065 + input_section->output_offset
8066 + input_section->output_section->vma);
8068 /* Invert 'y' bit if not the default. */
8069 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8070 insn ^= BRANCH_PREDICT_BIT;
8072 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
8077 if (ELIMINATE_COPY_RELOCS
8081 && ppc_elf_hash_entry (h)->has_addr16_ha
8082 && ppc_elf_hash_entry (h)->has_addr16_lo
8083 && htab->params->pic_fixup > 0)
8085 /* Convert lis;addi or lis;load/store accessing a protected
8086 variable defined in a shared library to PIC. */
8089 if (r_type == R_PPC_ADDR16_HA)
8091 insn = bfd_get_32 (input_bfd,
8092 contents + rel->r_offset - d_offset);
8093 if ((insn & (0x3f << 26)) == (15u << 26)
8094 && (insn & (0x1f << 16)) == 0 /* lis */)
8100 p = (contents + input_section->size
8101 - relax_info->workaround_size
8102 - relax_info->picfixup_size
8104 off = (p - contents) - (rel->r_offset - d_offset);
8105 if (off > 0x1fffffc || (off & 3) != 0)
8106 info->callbacks->einfo
8107 (_("%H: fixup branch overflow\n"),
8108 input_bfd, input_section, rel->r_offset);
8110 bfd_put_32 (input_bfd, B | off,
8111 contents + rel->r_offset - d_offset);
8112 got_addr = (htab->elf.sgot->output_section->vma
8113 + htab->elf.sgot->output_offset
8114 + (h->got.offset & ~1));
8115 wrel->r_offset = (p - contents) + d_offset;
8116 wrel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_HA);
8117 wrel->r_addend = got_addr;
8119 insn |= ((unsigned int) (got_addr + 0x8000) >> 16) & 0xffff;
8120 bfd_put_32 (input_bfd, insn, p);
8122 /* Convert lis to lwz, loading address from GOT. */
8124 insn ^= (32u ^ 15u) << 26;
8125 insn |= (insn & (0x1f << 21)) >> 5;
8126 insn |= got_addr & 0xffff;
8127 bfd_put_32 (input_bfd, insn, p + 4);
8129 bfd_put_32 (input_bfd, B | ((-4 - off) & 0x3ffffff), p + 8);
8130 picfixup_size += 12;
8132 /* Use one of the spare relocs, so --emit-relocs
8133 output is reasonable. */
8134 memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
8136 rel->r_offset = wrel[-1].r_offset + 4;
8137 rel->r_info = ELF32_R_INFO (0, R_PPC_ADDR16_LO);
8138 rel->r_addend = wrel[-1].r_addend;
8140 /* Continue on as if we had a got reloc, to output
8142 r_type = R_PPC_GOT16_LO;
8146 /* xgettext:c-format */
8147 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8148 input_bfd, input_section, rel->r_offset,
8149 "R_PPC_ADDR16_HA", insn);
8151 else if (r_type == R_PPC_ADDR16_LO)
8153 insn = bfd_get_32 (input_bfd,
8154 contents + rel->r_offset - d_offset);
8155 if ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8156 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8157 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8158 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8159 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8160 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8161 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8162 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8163 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8164 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8165 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8166 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8167 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8168 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8169 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8171 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8172 && ((insn & 3) == 0 || (insn & 3) == 3)))
8174 /* Arrange to apply the reloc addend, if any. */
8176 unresolved_reloc = FALSE;
8177 rel->r_info = ELF32_R_INFO (0, r_type);
8181 /* xgettext:c-format */
8182 (_("%B(%A+%#Lx): error: %s with unexpected instruction %#x"),
8183 input_bfd, input_section, rel->r_offset,
8184 "R_PPC_ADDR16_LO", insn);
8189 if (!htab->is_vxworks)
8191 struct plt_entry *ent;
8195 if (h->type == STT_GNU_IFUNC)
8196 ifunc = &h->plt.plist;
8198 else if (local_got_offsets != NULL
8199 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8201 struct plt_entry **local_plt;
8203 local_plt = (struct plt_entry **) (local_got_offsets
8204 + symtab_hdr->sh_info);
8205 ifunc = local_plt + r_symndx;
8210 && (!bfd_link_pic (info)
8211 || is_branch_reloc (r_type)))
8214 if (r_type == R_PPC_PLTREL24 && bfd_link_pic (info))
8215 addend = rel->r_addend;
8216 ent = find_plt_ent (ifunc, got2, addend);
8220 if (bfd_link_pic (info)
8222 && htab->plt_type != PLT_NEW
8223 && (!htab->elf.dynamic_sections_created
8225 || h->dynindx == -1))
8227 /* Uh oh, we are going to create a pic glink stub
8228 for an ifunc (here for h == NULL and later in
8229 finish_dynamic_symbol for h != NULL), and
8230 apparently are using code compiled with
8231 -mbss-plt. The difficulty is that -mbss-plt code
8232 gives no indication via a magic PLTREL24 addend
8233 whether r30 is equal to _GLOBAL_OFFSET_TABLE_ or
8234 is pointing into a .got2 section (and how far
8236 info->callbacks->einfo
8237 /* xgettext:c-format */
8238 (_("%X%H: unsupported bss-plt -fPIC ifunc %s\n"),
8239 input_bfd, input_section, rel->r_offset, sym_name);
8241 if (h == NULL && (ent->plt.offset & 1) == 0)
8243 Elf_Internal_Rela rela;
8246 rela.r_offset = (htab->elf.iplt->output_section->vma
8247 + htab->elf.iplt->output_offset
8249 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8250 rela.r_addend = relocation;
8251 loc = htab->elf.irelplt->contents;
8252 loc += (htab->elf.irelplt->reloc_count++
8253 * sizeof (Elf32_External_Rela));
8254 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
8255 htab->local_ifunc_resolver = 1;
8257 ent->plt.offset |= 1;
8259 if (h == NULL && (ent->glink_offset & 1) == 0)
8261 unsigned char *p = ((unsigned char *) htab->glink->contents
8262 + ent->glink_offset);
8263 write_glink_stub (ent, htab->elf.iplt, p, info);
8264 ent->glink_offset |= 1;
8267 unresolved_reloc = FALSE;
8268 if (htab->plt_type == PLT_NEW
8269 || !htab->elf.dynamic_sections_created
8271 || h->dynindx == -1)
8272 relocation = (htab->glink->output_section->vma
8273 + htab->glink->output_offset
8274 + (ent->glink_offset & ~1));
8276 relocation = (htab->elf.splt->output_section->vma
8277 + htab->elf.splt->output_offset
8282 addend = rel->r_addend;
8284 if (r_type < R_PPC_max)
8285 howto = ppc_elf_howto_table[r_type];
8292 case R_PPC_TPREL16_HA:
8293 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8295 bfd_byte *p = contents + (rel->r_offset & ~3);
8296 unsigned int insn = bfd_get_32 (input_bfd, p);
8297 if ((insn & ((0x3f << 26) | 0x1f << 16))
8298 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)
8299 /* xgettext:c-format */
8300 info->callbacks->minfo
8301 (_("%H: warning: %s unexpected insn %#x.\n"),
8302 input_bfd, input_section, rel->r_offset, howto->name, insn);
8304 bfd_put_32 (input_bfd, NOP, p);
8308 case R_PPC_TPREL16_LO:
8309 if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000)
8311 bfd_byte *p = contents + (rel->r_offset & ~3);
8312 unsigned int insn = bfd_get_32 (input_bfd, p);
8313 insn &= ~(0x1f << 16);
8315 bfd_put_32 (input_bfd, insn, p);
8324 info->callbacks->einfo
8325 /* xgettext:c-format */
8326 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
8327 input_bfd, (int) r_type, sym_name);
8329 bfd_set_error (bfd_error_bad_value);
8337 case R_PPC_EMB_MRKREF:
8338 case R_PPC_GNU_VTINHERIT:
8339 case R_PPC_GNU_VTENTRY:
8342 /* GOT16 relocations. Like an ADDR16 using the symbol's
8343 address in the GOT as relocation value instead of the
8344 symbol's value itself. Also, create a GOT entry for the
8345 symbol and put the symbol value there. */
8346 case R_PPC_GOT_TLSGD16:
8347 case R_PPC_GOT_TLSGD16_LO:
8348 case R_PPC_GOT_TLSGD16_HI:
8349 case R_PPC_GOT_TLSGD16_HA:
8350 tls_type = TLS_TLS | TLS_GD;
8353 case R_PPC_GOT_TLSLD16:
8354 case R_PPC_GOT_TLSLD16_LO:
8355 case R_PPC_GOT_TLSLD16_HI:
8356 case R_PPC_GOT_TLSLD16_HA:
8357 tls_type = TLS_TLS | TLS_LD;
8360 case R_PPC_GOT_TPREL16:
8361 case R_PPC_GOT_TPREL16_LO:
8362 case R_PPC_GOT_TPREL16_HI:
8363 case R_PPC_GOT_TPREL16_HA:
8364 tls_type = TLS_TLS | TLS_TPREL;
8367 case R_PPC_GOT_DTPREL16:
8368 case R_PPC_GOT_DTPREL16_LO:
8369 case R_PPC_GOT_DTPREL16_HI:
8370 case R_PPC_GOT_DTPREL16_HA:
8371 tls_type = TLS_TLS | TLS_DTPREL;
8375 case R_PPC_GOT16_LO:
8376 case R_PPC_GOT16_HI:
8377 case R_PPC_GOT16_HA:
8381 /* Relocation is to the entry for this symbol in the global
8387 if (htab->elf.sgot == NULL)
8391 if (tls_type == (TLS_TLS | TLS_LD)
8393 || !h->def_dynamic))
8394 offp = &htab->tlsld_got.offset;
8397 if (!htab->elf.dynamic_sections_created
8399 || SYMBOL_REFERENCES_LOCAL (info, h)
8400 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
8401 /* This is actually a static link, or it is a
8402 -Bsymbolic link and the symbol is defined
8403 locally, or the symbol was forced to be local
8404 because of a version file. */
8409 unresolved_reloc = FALSE;
8411 offp = &h->got.offset;
8415 if (local_got_offsets == NULL)
8417 offp = &local_got_offsets[r_symndx];
8420 /* The offset must always be a multiple of 4. We use the
8421 least significant bit to record whether we have already
8422 processed this entry. */
8428 unsigned int tls_m = (tls_mask
8429 & (TLS_LD | TLS_GD | TLS_DTPREL
8430 | TLS_TPREL | TLS_TPRELGD));
8432 if (offp == &htab->tlsld_got.offset)
8438 /* We might have multiple got entries for this sym.
8439 Initialize them all. */
8444 if ((tls_m & TLS_LD) != 0)
8446 tls_ty = TLS_TLS | TLS_LD;
8449 else if ((tls_m & TLS_GD) != 0)
8451 tls_ty = TLS_TLS | TLS_GD;
8454 else if ((tls_m & TLS_DTPREL) != 0)
8456 tls_ty = TLS_TLS | TLS_DTPREL;
8457 tls_m &= ~TLS_DTPREL;
8459 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
8461 tls_ty = TLS_TLS | TLS_TPREL;
8465 /* Generate relocs for the dynamic linker. */
8467 || (bfd_link_pic (info)
8469 || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
8470 || offp == &htab->tlsld_got.offset)
8471 && !(tls_ty == (TLS_TLS | TLS_TPREL)
8472 && bfd_link_executable (info)
8473 && SYMBOL_REFERENCES_LOCAL (info, h))))
8475 asection *rsec = htab->elf.srelgot;
8480 rsec = htab->elf.irelplt;
8482 htab->local_ifunc_resolver = 1;
8483 else if (is_static_defined (h))
8484 htab->maybe_local_ifunc_resolver = 1;
8486 outrel.r_offset = (htab->elf.sgot->output_section->vma
8487 + htab->elf.sgot->output_offset
8489 outrel.r_addend = 0;
8490 if (tls_ty & (TLS_LD | TLS_GD))
8492 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
8493 if (tls_ty == (TLS_TLS | TLS_GD))
8495 loc = rsec->contents;
8496 loc += (rsec->reloc_count++
8497 * sizeof (Elf32_External_Rela));
8498 bfd_elf32_swap_reloca_out (output_bfd,
8500 outrel.r_offset += 4;
8502 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8505 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
8506 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
8507 else if (tls_ty == (TLS_TLS | TLS_TPREL))
8508 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
8510 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
8511 else if (ifunc != NULL)
8512 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8514 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8515 if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
8517 outrel.r_addend += relocation;
8518 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8520 if (htab->elf.tls_sec == NULL)
8521 outrel.r_addend = 0;
8523 outrel.r_addend -= htab->elf.tls_sec->vma;
8526 loc = rsec->contents;
8527 loc += (rsec->reloc_count++
8528 * sizeof (Elf32_External_Rela));
8529 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8532 /* Init the .got section contents if we're not
8533 emitting a reloc. */
8536 bfd_vma value = relocation;
8540 if (htab->elf.tls_sec == NULL)
8544 if (tls_ty & TLS_LD)
8547 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
8548 if (tls_ty & TLS_TPREL)
8549 value += DTP_OFFSET - TP_OFFSET;
8552 if (tls_ty & (TLS_LD | TLS_GD))
8554 bfd_put_32 (input_bfd, value,
8555 htab->elf.sgot->contents + off + 4);
8559 bfd_put_32 (input_bfd, value,
8560 htab->elf.sgot->contents + off);
8564 if (tls_ty & (TLS_LD | TLS_GD))
8573 if (off >= (bfd_vma) -2)
8576 if ((tls_type & TLS_TLS) != 0)
8578 if (tls_type != (TLS_TLS | TLS_LD))
8580 if ((tls_mask & TLS_LD) != 0
8582 || !h->def_dynamic))
8584 if (tls_type != (TLS_TLS | TLS_GD))
8586 if ((tls_mask & TLS_GD) != 0)
8588 if (tls_type != (TLS_TLS | TLS_DTPREL))
8590 if ((tls_mask & TLS_DTPREL) != 0)
8597 /* If here for a picfixup, we're done. */
8598 if (r_type != ELF32_R_TYPE (rel->r_info))
8601 relocation = (htab->elf.sgot->output_section->vma
8602 + htab->elf.sgot->output_offset
8604 - SYM_VAL (htab->elf.hgot));
8606 /* Addends on got relocations don't make much sense.
8607 x+off@got is actually x@got+off, and since the got is
8608 generated by a hash table traversal, the value in the
8609 got at entry m+n bears little relation to the entry m. */
8611 info->callbacks->einfo
8612 /* xgettext:c-format */
8613 (_("%H: non-zero addend on %s reloc against `%s'\n"),
8614 input_bfd, input_section, rel->r_offset,
8620 /* Relocations that need no special processing. */
8621 case R_PPC_LOCAL24PC:
8622 /* It makes no sense to point a local relocation
8623 at a symbol not in this object. */
8624 if (unresolved_reloc)
8626 (*info->callbacks->undefined_symbol) (info,
8627 h->root.root.string,
8634 if (h != NULL && h->type == STT_GNU_IFUNC && bfd_link_pic (info))
8636 /* @local on an ifunc does not really make sense since
8637 the ifunc resolver can take you anywhere. More
8638 seriously, calls to ifuncs must go through a plt call
8639 stub, and for pic the plt call stubs uses r30 to
8640 access the PLT. The problem is that a call that is
8641 local won't have the +32k reloc addend trick marking
8642 -fPIC code, so the linker won't know whether r30 is
8643 _GLOBAL_OFFSET_TABLE_ or pointing into a .got2 section. */
8644 /* xgettext:c-format */
8645 info->callbacks->einfo (_("%X%H: @local call to ifunc %s\n"),
8646 input_bfd, input_section, rel->r_offset,
8647 h->root.root.string);
8651 case R_PPC_DTPREL16:
8652 case R_PPC_DTPREL16_LO:
8653 case R_PPC_DTPREL16_HI:
8654 case R_PPC_DTPREL16_HA:
8655 if (htab->elf.tls_sec != NULL)
8656 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8659 /* Relocations that may need to be propagated if this is a shared
8662 case R_PPC_TPREL16_LO:
8663 case R_PPC_TPREL16_HI:
8664 case R_PPC_TPREL16_HA:
8666 && h->root.type == bfd_link_hash_undefweak
8667 && h->dynindx == -1)
8669 /* Make this relocation against an undefined weak symbol
8670 resolve to zero. This is really just a tweak, since
8671 code using weak externs ought to check that they are
8672 defined before using them. */
8673 bfd_byte *p = contents + rel->r_offset - d_offset;
8674 unsigned int insn = bfd_get_32 (input_bfd, p);
8675 insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
8677 bfd_put_32 (input_bfd, insn, p);
8680 if (htab->elf.tls_sec != NULL)
8681 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8682 /* The TPREL16 relocs shouldn't really be used in shared
8683 libs or with non-local symbols as that will result in
8684 DT_TEXTREL being set, but support them anyway. */
8688 if (htab->elf.tls_sec != NULL)
8689 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8692 case R_PPC_DTPREL32:
8693 if (htab->elf.tls_sec != NULL)
8694 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8697 case R_PPC_DTPMOD32:
8703 case R_PPC_REL16_LO:
8704 case R_PPC_REL16_HI:
8705 case R_PPC_REL16_HA:
8706 case R_PPC_REL16DX_HA:
8710 if (h == NULL || h == htab->elf.hgot)
8716 case R_PPC_ADDR16_LO:
8717 case R_PPC_ADDR16_HI:
8718 case R_PPC_ADDR16_HA:
8723 case R_PPC_VLE_REL8:
8724 case R_PPC_VLE_REL15:
8725 case R_PPC_VLE_REL24:
8728 case R_PPC_REL14_BRTAKEN:
8729 case R_PPC_REL14_BRNTAKEN:
8730 /* If these relocations are not to a named symbol, they can be
8731 handled right here, no need to bother the dynamic linker. */
8732 if (SYMBOL_CALLS_LOCAL (info, h)
8733 || h == htab->elf.hgot)
8739 case R_PPC_ADDR14_BRTAKEN:
8740 case R_PPC_ADDR14_BRNTAKEN:
8741 if (h != NULL && !bfd_link_pic (info))
8746 if ((input_section->flags & SEC_ALLOC) == 0
8750 if (bfd_link_pic (info)
8752 || ppc_elf_hash_entry (h)->dyn_relocs != NULL)
8753 && ((h != NULL && pc_dynrelocs (h))
8754 || must_be_dyn_reloc (info, r_type)))
8756 && ppc_elf_hash_entry (h)->dyn_relocs != NULL))
8764 fprintf (stderr, "ppc_elf_relocate_section needs to "
8765 "create relocation for %s\n",
8766 (h && h->root.root.string
8767 ? h->root.root.string : "<unknown>"));
8770 /* When generating a shared object, these relocations
8771 are copied into the output file to be resolved at run
8774 outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
8777 if (outrel.r_offset == (bfd_vma) -1
8778 || outrel.r_offset == (bfd_vma) -2)
8779 skip = (int) outrel.r_offset;
8780 outrel.r_offset += (input_section->output_section->vma
8781 + input_section->output_offset);
8784 memset (&outrel, 0, sizeof outrel);
8785 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
8788 BFD_ASSERT (indx != -1);
8789 unresolved_reloc = FALSE;
8790 outrel.r_info = ELF32_R_INFO (indx, r_type);
8791 outrel.r_addend = rel->r_addend;
8795 outrel.r_addend = relocation + rel->r_addend;
8797 if (r_type != R_PPC_ADDR32)
8801 /* If we get here when building a static
8802 executable, then the libc startup function
8803 responsible for applying indirect function
8804 relocations is going to complain about
8806 If we get here when building a dynamic
8807 executable, it will be because we have
8808 a text relocation. The dynamic loader
8809 will set the text segment writable and
8810 non-executable to apply text relocations.
8811 So we'll segfault when trying to run the
8812 indirection function to resolve the reloc. */
8813 info->callbacks->einfo
8814 /* xgettext:c-format */
8815 (_("%H: relocation %s for indirect "
8816 "function %s unsupported\n"),
8817 input_bfd, input_section, rel->r_offset,
8822 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
8824 else if (sec == NULL || sec->owner == NULL)
8826 bfd_set_error (bfd_error_bad_value);
8833 /* We are turning this relocation into one
8834 against a section symbol. It would be
8835 proper to subtract the symbol's value,
8836 osec->vma, from the emitted reloc addend,
8837 but ld.so expects buggy relocs.
8838 FIXME: Why not always use a zero index? */
8839 osec = sec->output_section;
8840 indx = elf_section_data (osec)->dynindx;
8843 osec = htab->elf.text_index_section;
8844 indx = elf_section_data (osec)->dynindx;
8846 BFD_ASSERT (indx != 0);
8849 printf ("indx=%ld section=%s flags=%08x name=%s\n",
8850 indx, osec->name, osec->flags,
8851 h->root.root.string);
8855 outrel.r_info = ELF32_R_INFO (indx, r_type);
8857 else if (ifunc != NULL)
8858 outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
8860 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
8863 sreloc = elf_section_data (input_section)->sreloc;
8866 sreloc = htab->elf.irelplt;
8868 htab->local_ifunc_resolver = 1;
8869 else if (is_static_defined (h))
8870 htab->maybe_local_ifunc_resolver = 1;
8875 loc = sreloc->contents;
8876 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
8877 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
8882 /* This reloc will be computed at runtime. Clear the memory
8883 so that it contains a predictable value for prelink. */
8886 relocation = howto->pc_relative ? outrel.r_offset : 0;
8893 case R_PPC_RELAX_PLT:
8894 case R_PPC_RELAX_PLTREL24:
8897 struct plt_entry *ent;
8898 bfd_vma got2_addend = 0;
8900 if (r_type == R_PPC_RELAX_PLTREL24)
8902 if (bfd_link_pic (info))
8903 got2_addend = addend;
8906 ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
8907 if (htab->plt_type == PLT_NEW)
8908 relocation = (htab->glink->output_section->vma
8909 + htab->glink->output_offset
8910 + ent->glink_offset);
8912 relocation = (htab->elf.splt->output_section->vma
8913 + htab->elf.splt->output_offset
8922 size_t insn_offset = rel->r_offset;
8925 if (bfd_link_pic (info))
8927 relocation -= (input_section->output_section->vma
8928 + input_section->output_offset
8929 + rel->r_offset - 4);
8930 stub = shared_stub_entry;
8931 bfd_put_32 (input_bfd, stub[0], contents + insn_offset - 12);
8932 bfd_put_32 (input_bfd, stub[1], contents + insn_offset - 8);
8933 bfd_put_32 (input_bfd, stub[2], contents + insn_offset - 4);
8935 size = ARRAY_SIZE (shared_stub_entry) - 3;
8940 size = ARRAY_SIZE (stub_entry);
8943 relocation += addend;
8944 if (bfd_link_relocatable (info))
8947 /* First insn is HA, second is LO. */
8949 insn |= ((relocation + 0x8000) >> 16) & 0xffff;
8950 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8954 insn |= relocation & 0xffff;
8955 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8963 bfd_put_32 (input_bfd, insn, contents + insn_offset);
8967 /* Rewrite the reloc and convert one of the trailing nop
8968 relocs to describe this relocation. */
8969 BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
8970 /* The relocs are at the bottom 2 bytes */
8971 wrel->r_offset = rel->r_offset + d_offset;
8972 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
8973 wrel->r_addend = rel->r_addend;
8974 memmove (wrel + 1, wrel, (relend - wrel - 1) * sizeof (*wrel));
8976 wrel->r_offset += 4;
8977 wrel->r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
8981 /* Indirect .sdata relocation. */
8982 case R_PPC_EMB_SDAI16:
8983 BFD_ASSERT (htab->sdata[0].section != NULL);
8984 if (!is_static_defined (htab->sdata[0].sym))
8986 unresolved_reloc = TRUE;
8990 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
8991 h, relocation, rel);
8995 /* Indirect .sdata2 relocation. */
8996 case R_PPC_EMB_SDA2I16:
8997 BFD_ASSERT (htab->sdata[1].section != NULL);
8998 if (!is_static_defined (htab->sdata[1].sym))
9000 unresolved_reloc = TRUE;
9004 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
9005 h, relocation, rel);
9009 /* Handle the TOC16 reloc. We want to use the offset within the .got
9010 section, not the actual VMA. This is appropriate when generating
9011 an embedded ELF object, for which the .got section acts like the
9012 AIX .toc section. */
9013 case R_PPC_TOC16: /* phony GOT16 relocations */
9014 if (sec == NULL || sec->output_section == NULL)
9016 unresolved_reloc = TRUE;
9019 BFD_ASSERT (strcmp (bfd_get_section_name (sec->owner, sec),
9021 || strcmp (bfd_get_section_name (sec->owner, sec),
9024 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
9027 case R_PPC_PLTREL24:
9028 if (h != NULL && ifunc == NULL)
9030 struct plt_entry *ent;
9032 ent = find_plt_ent (&h->plt.plist, got2,
9033 bfd_link_pic (info) ? addend : 0);
9035 || htab->elf.splt == NULL)
9037 /* We didn't make a PLT entry for this symbol. This
9038 happens when statically linking PIC code, or when
9039 using -Bsymbolic. */
9043 /* Relocation is to the entry for this symbol in the
9044 procedure linkage table. */
9045 unresolved_reloc = FALSE;
9046 if (htab->plt_type == PLT_NEW)
9047 relocation = (htab->glink->output_section->vma
9048 + htab->glink->output_offset
9049 + ent->glink_offset);
9051 relocation = (htab->elf.splt->output_section->vma
9052 + htab->elf.splt->output_offset
9057 /* R_PPC_PLTREL24 is rather special. If non-zero, the
9058 addend specifies the GOT pointer offset within .got2.
9059 Don't apply it to the relocation field. */
9063 /* Relocate against _SDA_BASE_. */
9064 case R_PPC_SDAREL16:
9067 struct elf_link_hash_entry *sda = htab->sdata[0].sym;
9070 || sec->output_section == NULL
9071 || !is_static_defined (sda))
9073 unresolved_reloc = TRUE;
9076 addend -= SYM_VAL (sda);
9078 name = bfd_get_section_name (output_bfd, sec->output_section);
9079 if (!(strcmp (name, ".sdata") == 0
9080 || strcmp (name, ".sbss") == 0))
9082 info->callbacks->einfo
9083 /* xgettext:c-format */
9084 (_("%P: %B: the target (%s) of a %s relocation is "
9085 "in the wrong output section (%s)\n"),
9094 /* Relocate against _SDA2_BASE_. */
9095 case R_PPC_EMB_SDA2REL:
9098 struct elf_link_hash_entry *sda = htab->sdata[1].sym;
9101 || sec->output_section == NULL
9102 || !is_static_defined (sda))
9104 unresolved_reloc = TRUE;
9107 addend -= SYM_VAL (sda);
9109 name = bfd_get_section_name (output_bfd, sec->output_section);
9110 if (!(strcmp (name, ".sdata2") == 0
9111 || strcmp (name, ".sbss2") == 0))
9113 info->callbacks->einfo
9114 /* xgettext:c-format */
9115 (_("%P: %B: the target (%s) of a %s relocation is "
9116 "in the wrong output section (%s)\n"),
9125 case R_PPC_VLE_LO16A:
9126 relocation = relocation + addend;
9127 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9128 contents + rel->r_offset, relocation,
9129 split16a_type, htab->params->vle_reloc_fixup);
9132 case R_PPC_VLE_LO16D:
9133 relocation = relocation + addend;
9134 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9135 contents + rel->r_offset, relocation,
9136 split16d_type, htab->params->vle_reloc_fixup);
9139 case R_PPC_VLE_HI16A:
9140 relocation = (relocation + addend) >> 16;
9141 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9142 contents + rel->r_offset, relocation,
9143 split16a_type, htab->params->vle_reloc_fixup);
9146 case R_PPC_VLE_HI16D:
9147 relocation = (relocation + addend) >> 16;
9148 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9149 contents + rel->r_offset, relocation,
9150 split16d_type, htab->params->vle_reloc_fixup);
9153 case R_PPC_VLE_HA16A:
9154 relocation = (relocation + addend + 0x8000) >> 16;
9155 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9156 contents + rel->r_offset, relocation,
9157 split16a_type, htab->params->vle_reloc_fixup);
9160 case R_PPC_VLE_HA16D:
9161 relocation = (relocation + addend + 0x8000) >> 16;
9162 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9163 contents + rel->r_offset, relocation,
9164 split16d_type, htab->params->vle_reloc_fixup);
9167 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
9168 case R_PPC_EMB_SDA21:
9169 case R_PPC_VLE_SDA21:
9170 case R_PPC_EMB_RELSDA:
9171 case R_PPC_VLE_SDA21_LO:
9176 struct elf_link_hash_entry *sda = NULL;
9178 if (sec == NULL || sec->output_section == NULL)
9180 unresolved_reloc = TRUE;
9184 name = bfd_get_section_name (output_bfd, sec->output_section);
9185 if (strcmp (name, ".sdata") == 0
9186 || strcmp (name, ".sbss") == 0)
9189 sda = htab->sdata[0].sym;
9191 else if (strcmp (name, ".sdata2") == 0
9192 || strcmp (name, ".sbss2") == 0)
9195 sda = htab->sdata[1].sym;
9197 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
9198 || strcmp (name, ".PPC.EMB.sbss0") == 0)
9204 info->callbacks->einfo
9205 /* xgettext:c-format */
9206 (_("%P: %B: the target (%s) of a %s relocation is "
9207 "in the wrong output section (%s)\n"),
9213 bfd_set_error (bfd_error_bad_value);
9220 if (!is_static_defined (sda))
9222 unresolved_reloc = TRUE;
9225 addend -= SYM_VAL (sda);
9228 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9230 && (r_type == R_PPC_VLE_SDA21
9231 || r_type == R_PPC_VLE_SDA21_LO))
9233 relocation = relocation + addend;
9236 /* Force e_li insn, keeping RT from original insn. */
9240 /* We have an li20 field, bits 17..20, 11..15, 21..31. */
9241 /* Top 4 bits of value to 17..20. */
9242 insn |= (relocation & 0xf0000) >> 5;
9243 /* Next 5 bits of the value to 11..15. */
9244 insn |= (relocation & 0xf800) << 5;
9245 /* And the final 11 bits of the value to bits 21 to 31. */
9246 insn |= relocation & 0x7ff;
9248 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9250 if (r_type == R_PPC_VLE_SDA21
9251 && ((relocation + 0x80000) & 0xffffffff) > 0x100000)
9255 else if (r_type == R_PPC_EMB_SDA21
9256 || r_type == R_PPC_VLE_SDA21
9257 || r_type == R_PPC_VLE_SDA21_LO)
9259 /* Fill in register field. */
9260 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
9262 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9266 case R_PPC_VLE_SDAREL_LO16A:
9267 case R_PPC_VLE_SDAREL_LO16D:
9268 case R_PPC_VLE_SDAREL_HI16A:
9269 case R_PPC_VLE_SDAREL_HI16D:
9270 case R_PPC_VLE_SDAREL_HA16A:
9271 case R_PPC_VLE_SDAREL_HA16D:
9275 struct elf_link_hash_entry *sda = NULL;
9277 if (sec == NULL || sec->output_section == NULL)
9279 unresolved_reloc = TRUE;
9283 name = bfd_get_section_name (output_bfd, sec->output_section);
9284 if (strcmp (name, ".sdata") == 0
9285 || strcmp (name, ".sbss") == 0)
9286 sda = htab->sdata[0].sym;
9287 else if (strcmp (name, ".sdata2") == 0
9288 || strcmp (name, ".sbss2") == 0)
9289 sda = htab->sdata[1].sym;
9293 /* xgettext:c-format */
9294 (_("%B: the target (%s) of a %s relocation is "
9295 "in the wrong output section (%s)"),
9301 bfd_set_error (bfd_error_bad_value);
9306 if (sda == NULL || !is_static_defined (sda))
9308 unresolved_reloc = TRUE;
9311 value = relocation + addend - SYM_VAL (sda);
9313 if (r_type == R_PPC_VLE_SDAREL_LO16A)
9314 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9315 contents + rel->r_offset, value,
9317 htab->params->vle_reloc_fixup);
9318 else if (r_type == R_PPC_VLE_SDAREL_LO16D)
9319 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9320 contents + rel->r_offset, value,
9322 htab->params->vle_reloc_fixup);
9323 else if (r_type == R_PPC_VLE_SDAREL_HI16A)
9325 value = value >> 16;
9326 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9327 contents + rel->r_offset, value,
9329 htab->params->vle_reloc_fixup);
9331 else if (r_type == R_PPC_VLE_SDAREL_HI16D)
9333 value = value >> 16;
9334 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9335 contents + rel->r_offset, value,
9337 htab->params->vle_reloc_fixup);
9339 else if (r_type == R_PPC_VLE_SDAREL_HA16A)
9341 value = (value + 0x8000) >> 16;
9342 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9343 contents + rel->r_offset, value,
9345 htab->params->vle_reloc_fixup);
9347 else if (r_type == R_PPC_VLE_SDAREL_HA16D)
9349 value = (value + 0x8000) >> 16;
9350 ppc_elf_vle_split16 (input_bfd, input_section, rel->r_offset,
9351 contents + rel->r_offset, value,
9353 htab->params->vle_reloc_fixup);
9358 case R_PPC_VLE_ADDR20:
9359 ppc_elf_vle_split20 (output_bfd, contents + rel->r_offset, relocation);
9362 /* Relocate against the beginning of the section. */
9364 case R_PPC_SECTOFF_LO:
9365 case R_PPC_SECTOFF_HI:
9366 case R_PPC_SECTOFF_HA:
9367 if (sec == NULL || sec->output_section == NULL)
9369 unresolved_reloc = TRUE;
9372 addend -= sec->output_section->vma;
9375 /* Negative relocations. */
9376 case R_PPC_EMB_NADDR32:
9377 case R_PPC_EMB_NADDR16:
9378 case R_PPC_EMB_NADDR16_LO:
9379 case R_PPC_EMB_NADDR16_HI:
9380 case R_PPC_EMB_NADDR16_HA:
9381 addend -= 2 * relocation;
9385 case R_PPC_GLOB_DAT:
9386 case R_PPC_JMP_SLOT:
9387 case R_PPC_RELATIVE:
9388 case R_PPC_IRELATIVE:
9390 case R_PPC_PLTREL32:
9391 case R_PPC_PLT16_LO:
9392 case R_PPC_PLT16_HI:
9393 case R_PPC_PLT16_HA:
9395 case R_PPC_EMB_RELSEC16:
9396 case R_PPC_EMB_RELST_LO:
9397 case R_PPC_EMB_RELST_HI:
9398 case R_PPC_EMB_RELST_HA:
9399 case R_PPC_EMB_BIT_FLD:
9400 info->callbacks->einfo
9401 /* xgettext:c-format */
9402 (_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
9407 bfd_set_error (bfd_error_invalid_operation);
9412 /* Do any further special processing. */
9418 case R_PPC_ADDR16_HA:
9419 case R_PPC_REL16_HA:
9420 case R_PPC_REL16DX_HA:
9421 case R_PPC_SECTOFF_HA:
9422 case R_PPC_TPREL16_HA:
9423 case R_PPC_DTPREL16_HA:
9424 case R_PPC_EMB_NADDR16_HA:
9425 case R_PPC_EMB_RELST_HA:
9426 /* It's just possible that this symbol is a weak symbol
9427 that's not actually defined anywhere. In that case,
9428 'sec' would be NULL, and we should leave the symbol
9429 alone (it will be set to zero elsewhere in the link). */
9434 case R_PPC_PLT16_HA:
9435 case R_PPC_GOT16_HA:
9436 case R_PPC_GOT_TLSGD16_HA:
9437 case R_PPC_GOT_TLSLD16_HA:
9438 case R_PPC_GOT_TPREL16_HA:
9439 case R_PPC_GOT_DTPREL16_HA:
9440 /* Add 0x10000 if sign bit in 0:15 is set.
9441 Bits 0:15 are not used. */
9446 case R_PPC_ADDR16_LO:
9448 case R_PPC_GOT16_LO:
9449 case R_PPC_SDAREL16:
9451 case R_PPC_SECTOFF_LO:
9452 case R_PPC_DTPREL16:
9453 case R_PPC_DTPREL16_LO:
9455 case R_PPC_TPREL16_LO:
9456 case R_PPC_GOT_TLSGD16:
9457 case R_PPC_GOT_TLSGD16_LO:
9458 case R_PPC_GOT_TLSLD16:
9459 case R_PPC_GOT_TLSLD16_LO:
9460 case R_PPC_GOT_DTPREL16:
9461 case R_PPC_GOT_DTPREL16_LO:
9462 case R_PPC_GOT_TPREL16:
9463 case R_PPC_GOT_TPREL16_LO:
9465 /* The 32-bit ABI lacks proper relocations to deal with
9466 certain 64-bit instructions. Prevent damage to bits
9467 that make up part of the insn opcode. */
9468 unsigned int insn, mask, lobit;
9470 insn = bfd_get_32 (input_bfd,
9471 contents + rel->r_offset - d_offset);
9473 if (is_insn_ds_form (insn))
9475 else if (is_insn_dq_form (insn))
9479 relocation += addend;
9480 addend = insn & mask;
9481 lobit = mask & relocation;
9484 relocation ^= lobit;
9485 info->callbacks->einfo
9486 /* xgettext:c-format */
9487 (_("%H: error: %s against `%s' not a multiple of %u\n"),
9488 input_bfd, input_section, rel->r_offset,
9489 howto->name, sym_name, mask + 1);
9490 bfd_set_error (bfd_error_bad_value);
9498 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
9499 "offset = %ld, addend = %ld\n",
9504 (long) rel->r_offset,
9508 if (unresolved_reloc
9509 && !((input_section->flags & SEC_DEBUGGING) != 0
9511 && _bfd_elf_section_offset (output_bfd, info, input_section,
9512 rel->r_offset) != (bfd_vma) -1)
9514 info->callbacks->einfo
9515 /* xgettext:c-format */
9516 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
9517 input_bfd, input_section, rel->r_offset,
9523 /* 16-bit fields in insns mostly have signed values, but a
9524 few insns have 16-bit unsigned values. Really, we should
9525 have different reloc types. */
9526 if (howto->complain_on_overflow != complain_overflow_dont
9527 && howto->dst_mask == 0xffff
9528 && (input_section->flags & SEC_CODE) != 0)
9530 enum complain_overflow complain = complain_overflow_signed;
9532 if ((elf_section_flags (input_section) & SHF_PPC_VLE) == 0)
9536 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9537 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
9538 complain = complain_overflow_bitfield;
9539 else if ((insn & (0x3f << 26)) == 28u << 26 /* andi */
9540 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
9541 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
9542 complain = complain_overflow_unsigned;
9544 if (howto->complain_on_overflow != complain)
9547 alt_howto.complain_on_overflow = complain;
9552 if (r_type == R_PPC_REL16DX_HA)
9554 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
9555 if (rel->r_offset + 4 > input_section->size)
9556 r = bfd_reloc_outofrange;
9561 relocation += addend;
9562 relocation -= (rel->r_offset
9563 + input_section->output_offset
9564 + input_section->output_section->vma);
9566 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
9568 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
9569 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
9574 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
9575 rel->r_offset, relocation, addend);
9577 if (r != bfd_reloc_ok)
9579 if (r == bfd_reloc_overflow)
9582 /* On code like "if (foo) foo();" don't report overflow
9583 on a branch to zero when foo is undefined. */
9586 && (h->root.type == bfd_link_hash_undefweak
9587 || h->root.type == bfd_link_hash_undefined)
9588 && is_branch_reloc (r_type)))
9589 info->callbacks->reloc_overflow
9590 (info, (h ? &h->root : NULL), sym_name, howto->name,
9591 rel->r_addend, input_bfd, input_section, rel->r_offset);
9595 info->callbacks->einfo
9596 /* xgettext:c-format */
9597 (_("%H: %s reloc against `%s': error %d\n"),
9598 input_bfd, input_section, rel->r_offset,
9599 howto->name, sym_name, (int) r);
9610 Elf_Internal_Shdr *rel_hdr;
9611 size_t deleted = rel - wrel;
9613 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
9614 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9615 if (rel_hdr->sh_size == 0)
9617 /* It is too late to remove an empty reloc section. Leave
9619 ??? What is wrong with an empty section??? */
9620 rel_hdr->sh_size = rel_hdr->sh_entsize;
9625 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
9626 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
9627 input_section->reloc_count -= deleted;
9631 fprintf (stderr, "\n");
9634 if (input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9635 && input_section->size != input_section->rawsize
9636 && (strcmp (input_section->output_section->name, ".init") == 0
9637 || strcmp (input_section->output_section->name, ".fini") == 0))
9639 /* Branch around the trampolines. */
9640 unsigned int insn = B + input_section->size - input_section->rawsize;
9641 bfd_put_32 (input_bfd, insn, contents + input_section->rawsize);
9644 if (htab->params->ppc476_workaround
9645 && input_section->sec_info_type == SEC_INFO_TYPE_TARGET
9646 && (!bfd_link_relocatable (info)
9647 || (input_section->output_section->alignment_power
9648 >= htab->params->pagesize_p2)))
9650 bfd_vma start_addr, end_addr, addr;
9651 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
9653 if (relax_info->workaround_size != 0)
9659 bfd_put_32 (input_bfd, BA, fill);
9660 p = contents + input_section->size - relax_info->workaround_size;
9661 n = relax_info->workaround_size >> 2;
9664 memcpy (p, fill, 4);
9669 /* The idea is: Replace the last instruction on a page with a
9670 branch to a patch area. Put the insn there followed by a
9671 branch back to the next page. Complicated a little by
9672 needing to handle moved conditional branches, and by not
9673 wanting to touch data-in-text. */
9675 start_addr = (input_section->output_section->vma
9676 + input_section->output_offset);
9677 end_addr = (start_addr + input_section->size
9678 - relax_info->workaround_size);
9679 for (addr = ((start_addr & -pagesize) + pagesize - 4);
9683 bfd_vma offset = addr - start_addr;
9684 Elf_Internal_Rela *lo, *hi;
9685 bfd_boolean is_data;
9686 bfd_vma patch_off, patch_addr;
9689 /* Do we have a data reloc at this offset? If so, leave
9697 rel = lo + (hi - lo) / 2;
9698 if (rel->r_offset < offset)
9700 else if (rel->r_offset > offset + 3)
9704 switch (ELF32_R_TYPE (rel->r_info))
9721 /* Some instructions can be left alone too. Unconditional
9722 branches, except for bcctr with BO=0x14 (bctr, bctrl),
9723 avoid the icache failure.
9725 The problem occurs due to prefetch across a page boundary
9726 where stale instructions can be fetched from the next
9727 page, and the mechanism for flushing these bad
9728 instructions fails under certain circumstances. The
9729 unconditional branches:
9730 1) Branch: b, bl, ba, bla,
9731 2) Branch Conditional: bc, bca, bcl, bcla,
9732 3) Branch Conditional to Link Register: bclr, bclrl,
9733 where (2) and (3) have BO=0x14 making them unconditional,
9734 prevent the bad prefetch because the prefetch itself is
9735 affected by these instructions. This happens even if the
9736 instruction is not executed.
9741 . addi 9,9,new_page@l
9748 The bctr is not predicted taken due to ctr not being
9749 ready, so prefetch continues on past the bctr into the
9750 new page which might have stale instructions. If they
9751 fail to be flushed, then they will be executed after the
9752 bctr executes. Either of the following modifications
9753 prevent the bad prefetch from happening in the first
9756 . lis 9,new_page@ha lis 9,new_page@ha
9757 . addi 9,9,new_page@l addi 9,9,new_page@l
9760 . nop b somewhere_else
9761 . b somewhere_else nop
9762 . new_page: new_page:
9764 insn = bfd_get_32 (input_bfd, contents + offset);
9765 if ((insn & (0x3f << 26)) == (18u << 26) /* b,bl,ba,bla */
9766 || ((insn & (0x3f << 26)) == (16u << 26) /* bc,bcl,bca,bcla*/
9767 && (insn & (0x14 << 21)) == (0x14 << 21)) /* with BO=0x14 */
9768 || ((insn & (0x3f << 26)) == (19u << 26)
9769 && (insn & (0x3ff << 1)) == (16u << 1) /* bclr,bclrl */
9770 && (insn & (0x14 << 21)) == (0x14 << 21)))/* with BO=0x14 */
9773 patch_addr = (start_addr + input_section->size
9774 - relax_info->workaround_size);
9775 patch_addr = (patch_addr + 15) & -16;
9776 patch_off = patch_addr - start_addr;
9777 bfd_put_32 (input_bfd, B + patch_off - offset, contents + offset);
9780 && rel->r_offset >= offset
9781 && rel->r_offset < offset + 4)
9785 /* If the insn we are patching had a reloc, adjust the
9786 reloc r_offset so that the reloc applies to the moved
9787 location. This matters for -r and --emit-relocs. */
9788 if (rel + 1 != relend)
9790 Elf_Internal_Rela tmp = *rel;
9792 /* Keep the relocs sorted by r_offset. */
9793 memmove (rel, rel + 1, (relend - (rel + 1)) * sizeof (*rel));
9796 relend[-1].r_offset += patch_off - offset;
9798 /* Adjust REL16 addends too. */
9799 switch (ELF32_R_TYPE (relend[-1].r_info))
9802 case R_PPC_REL16_LO:
9803 case R_PPC_REL16_HI:
9804 case R_PPC_REL16_HA:
9805 relend[-1].r_addend += patch_off - offset;
9811 /* If we are building a PIE or shared library with
9812 non-PIC objects, perhaps we had a dynamic reloc too?
9813 If so, the dynamic reloc must move with the insn. */
9814 sreloc = elf_section_data (input_section)->sreloc;
9817 Elf32_External_Rela *slo, *shi, *srelend;
9820 slo = (Elf32_External_Rela *) sreloc->contents;
9821 shi = srelend = slo + sreloc->reloc_count;
9822 soffset = (offset + input_section->output_section->vma
9823 + input_section->output_offset);
9826 Elf32_External_Rela *srel = slo + (shi - slo) / 2;
9827 bfd_elf32_swap_reloca_in (output_bfd, (bfd_byte *) srel,
9829 if (outrel.r_offset < soffset)
9831 else if (outrel.r_offset > soffset + 3)
9835 if (srel + 1 != srelend)
9837 memmove (srel, srel + 1,
9838 (srelend - (srel + 1)) * sizeof (*srel));
9841 outrel.r_offset += patch_off - offset;
9842 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
9852 if ((insn & (0x3f << 26)) == (16u << 26) /* bc */
9853 && (insn & 2) == 0 /* relative */)
9855 bfd_vma delta = ((insn & 0xfffc) ^ 0x8000) - 0x8000;
9857 delta += offset - patch_off;
9858 if (bfd_link_relocatable (info) && rel != NULL)
9860 if (!bfd_link_relocatable (info) && rel != NULL)
9862 enum elf_ppc_reloc_type r_type;
9864 r_type = ELF32_R_TYPE (relend[-1].r_info);
9865 if (r_type == R_PPC_REL14_BRTAKEN)
9866 insn |= BRANCH_PREDICT_BIT;
9867 else if (r_type == R_PPC_REL14_BRNTAKEN)
9868 insn &= ~BRANCH_PREDICT_BIT;
9870 BFD_ASSERT (r_type == R_PPC_REL14);
9872 if ((r_type == R_PPC_REL14_BRTAKEN
9873 || r_type == R_PPC_REL14_BRNTAKEN)
9874 && delta + 0x8000 < 0x10000
9875 && (bfd_signed_vma) delta < 0)
9876 insn ^= BRANCH_PREDICT_BIT;
9878 if (delta + 0x8000 < 0x10000)
9880 bfd_put_32 (input_bfd,
9881 (insn & ~0xfffc) | (delta & 0xfffc),
9882 contents + patch_off);
9884 bfd_put_32 (input_bfd,
9885 B | ((offset + 4 - patch_off) & 0x3fffffc),
9886 contents + patch_off);
9893 unsigned int r_sym = ELF32_R_SYM (relend[-1].r_info);
9895 relend[-1].r_offset += 8;
9896 relend[-1].r_info = ELF32_R_INFO (r_sym, R_PPC_REL24);
9898 bfd_put_32 (input_bfd,
9899 (insn & ~0xfffc) | 8,
9900 contents + patch_off);
9902 bfd_put_32 (input_bfd,
9903 B | ((offset + 4 - patch_off) & 0x3fffffc),
9904 contents + patch_off);
9906 bfd_put_32 (input_bfd,
9907 B | ((delta - 8) & 0x3fffffc),
9908 contents + patch_off);
9914 bfd_put_32 (input_bfd, insn, contents + patch_off);
9916 bfd_put_32 (input_bfd,
9917 B | ((offset + 4 - patch_off) & 0x3fffffc),
9918 contents + patch_off);
9921 BFD_ASSERT (patch_off <= input_section->size);
9922 relax_info->workaround_size = input_section->size - patch_off;
9929 /* Finish up dynamic symbol handling. We set the contents of various
9930 dynamic sections here. */
9933 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
9934 struct bfd_link_info *info,
9935 struct elf_link_hash_entry *h,
9936 Elf_Internal_Sym *sym)
9938 struct ppc_elf_link_hash_table *htab;
9939 struct plt_entry *ent;
9940 bfd_boolean doneone;
9943 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
9944 h->root.root.string);
9947 htab = ppc_elf_hash_table (info);
9948 BFD_ASSERT (htab->elf.dynobj != NULL);
9951 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9952 if (ent->plt.offset != (bfd_vma) -1)
9956 Elf_Internal_Rela rela;
9958 bfd_vma reloc_index;
9960 if (htab->plt_type == PLT_NEW
9961 || !htab->elf.dynamic_sections_created
9962 || h->dynindx == -1)
9963 reloc_index = ent->plt.offset / 4;
9966 reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
9967 / htab->plt_slot_size);
9968 if (reloc_index > PLT_NUM_SINGLE_ENTRIES
9969 && htab->plt_type == PLT_OLD)
9970 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
9973 /* This symbol has an entry in the procedure linkage table.
9975 if (htab->plt_type == PLT_VXWORKS
9976 && htab->elf.dynamic_sections_created
9977 && h->dynindx != -1)
9980 const bfd_vma *plt_entry;
9982 /* The first three entries in .got.plt are reserved. */
9983 got_offset = (reloc_index + 3) * 4;
9985 /* Use the right PLT. */
9986 plt_entry = bfd_link_pic (info) ? ppc_elf_vxworks_pic_plt_entry
9987 : ppc_elf_vxworks_plt_entry;
9989 /* Fill in the .plt on VxWorks. */
9990 if (bfd_link_pic (info))
9992 bfd_put_32 (output_bfd,
9993 plt_entry[0] | PPC_HA (got_offset),
9994 htab->elf.splt->contents + ent->plt.offset + 0);
9995 bfd_put_32 (output_bfd,
9996 plt_entry[1] | PPC_LO (got_offset),
9997 htab->elf.splt->contents + ent->plt.offset + 4);
10001 bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
10003 bfd_put_32 (output_bfd,
10004 plt_entry[0] | PPC_HA (got_loc),
10005 htab->elf.splt->contents + ent->plt.offset + 0);
10006 bfd_put_32 (output_bfd,
10007 plt_entry[1] | PPC_LO (got_loc),
10008 htab->elf.splt->contents + ent->plt.offset + 4);
10011 bfd_put_32 (output_bfd, plt_entry[2],
10012 htab->elf.splt->contents + ent->plt.offset + 8);
10013 bfd_put_32 (output_bfd, plt_entry[3],
10014 htab->elf.splt->contents + ent->plt.offset + 12);
10016 /* This instruction is an immediate load. The value loaded is
10017 the byte offset of the R_PPC_JMP_SLOT relocation from the
10018 start of the .rela.plt section. The value is stored in the
10019 low-order 16 bits of the load instruction. */
10020 /* NOTE: It appears that this is now an index rather than a
10021 prescaled offset. */
10022 bfd_put_32 (output_bfd,
10023 plt_entry[4] | reloc_index,
10024 htab->elf.splt->contents + ent->plt.offset + 16);
10025 /* This instruction is a PC-relative branch whose target is
10026 the start of the PLT section. The address of this branch
10027 instruction is 20 bytes beyond the start of this PLT entry.
10028 The address is encoded in bits 6-29, inclusive. The value
10029 stored is right-shifted by two bits, permitting a 26-bit
10031 bfd_put_32 (output_bfd,
10033 | (-(ent->plt.offset + 20) & 0x03fffffc)),
10034 htab->elf.splt->contents + ent->plt.offset + 20);
10035 bfd_put_32 (output_bfd, plt_entry[6],
10036 htab->elf.splt->contents + ent->plt.offset + 24);
10037 bfd_put_32 (output_bfd, plt_entry[7],
10038 htab->elf.splt->contents + ent->plt.offset + 28);
10040 /* Fill in the GOT entry corresponding to this PLT slot with
10041 the address immediately after the "bctr" instruction
10042 in this PLT entry. */
10043 bfd_put_32 (output_bfd, (htab->elf.splt->output_section->vma
10044 + htab->elf.splt->output_offset
10045 + ent->plt.offset + 16),
10046 htab->elf.sgotplt->contents + got_offset);
10048 if (!bfd_link_pic (info))
10050 /* Fill in a couple of entries in .rela.plt.unloaded. */
10051 loc = htab->srelplt2->contents
10052 + ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
10053 * VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
10054 * sizeof (Elf32_External_Rela));
10056 /* Provide the @ha relocation for the first instruction. */
10057 rela.r_offset = (htab->elf.splt->output_section->vma
10058 + htab->elf.splt->output_offset
10059 + ent->plt.offset + 2);
10060 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10062 rela.r_addend = got_offset;
10063 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10064 loc += sizeof (Elf32_External_Rela);
10066 /* Provide the @l relocation for the second instruction. */
10067 rela.r_offset = (htab->elf.splt->output_section->vma
10068 + htab->elf.splt->output_offset
10069 + ent->plt.offset + 6);
10070 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
10072 rela.r_addend = got_offset;
10073 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10074 loc += sizeof (Elf32_External_Rela);
10076 /* Provide a relocation for the GOT entry corresponding to this
10077 PLT slot. Point it at the middle of the .plt entry. */
10078 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10079 + htab->elf.sgotplt->output_offset
10081 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
10083 rela.r_addend = ent->plt.offset + 16;
10084 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10087 /* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
10088 In particular, the offset for the relocation is not the
10089 address of the PLT entry for this function, as specified
10090 by the ABI. Instead, the offset is set to the address of
10091 the GOT slot for this function. See EABI 4.4.4.1. */
10092 rela.r_offset = (htab->elf.sgotplt->output_section->vma
10093 + htab->elf.sgotplt->output_offset
10099 asection *splt = htab->elf.splt;
10100 if (!htab->elf.dynamic_sections_created
10101 || h->dynindx == -1)
10102 splt = htab->elf.iplt;
10104 rela.r_offset = (splt->output_section->vma
10105 + splt->output_offset
10106 + ent->plt.offset);
10107 if (htab->plt_type == PLT_OLD
10108 || !htab->elf.dynamic_sections_created
10109 || h->dynindx == -1)
10111 /* We don't need to fill in the .plt. The ppc dynamic
10112 linker will fill it in. */
10116 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
10117 + htab->glink->output_section->vma
10118 + htab->glink->output_offset);
10119 bfd_put_32 (output_bfd, val,
10120 splt->contents + ent->plt.offset);
10124 /* Fill in the entry in the .rela.plt section. */
10126 if (!htab->elf.dynamic_sections_created
10127 || h->dynindx == -1)
10129 BFD_ASSERT (h->type == STT_GNU_IFUNC
10131 && (h->root.type == bfd_link_hash_defined
10132 || h->root.type == bfd_link_hash_defweak));
10133 rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
10134 rela.r_addend = SYM_VAL (h);
10137 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
10139 if (!htab->elf.dynamic_sections_created
10140 || h->dynindx == -1)
10142 loc = (htab->elf.irelplt->contents
10143 + (htab->elf.irelplt->reloc_count++
10144 * sizeof (Elf32_External_Rela)));
10145 htab->local_ifunc_resolver = 1;
10149 loc = (htab->elf.srelplt->contents
10150 + reloc_index * sizeof (Elf32_External_Rela));
10151 if (h->type == STT_GNU_IFUNC && is_static_defined (h))
10152 htab->maybe_local_ifunc_resolver = 1;
10154 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10156 if (!h->def_regular)
10158 /* Mark the symbol as undefined, rather than as
10159 defined in the .plt section. Leave the value if
10160 there were any relocations where pointer equality
10161 matters (this is a clue for the dynamic linker, to
10162 make function pointer comparisons work between an
10163 application and shared library), otherwise set it
10165 sym->st_shndx = SHN_UNDEF;
10166 if (!h->pointer_equality_needed)
10168 else if (!h->ref_regular_nonweak)
10170 /* This breaks function pointer comparisons, but
10171 that is better than breaking tests for a NULL
10172 function pointer. */
10176 else if (h->type == STT_GNU_IFUNC
10177 && !bfd_link_pic (info))
10179 /* Set the value of ifunc symbols in a non-pie
10180 executable to the glink entry. This is to avoid
10181 text relocations. We can't do this for ifunc in
10182 allocate_dynrelocs, as we do for normal dynamic
10183 function symbols with plt entries, because we need
10184 to keep the original value around for the ifunc
10186 sym->st_shndx = (_bfd_elf_section_from_bfd_section
10187 (output_bfd, htab->glink->output_section));
10188 sym->st_value = (ent->glink_offset
10189 + htab->glink->output_offset
10190 + htab->glink->output_section->vma);
10195 if (htab->plt_type == PLT_NEW
10196 || !htab->elf.dynamic_sections_created
10197 || h->dynindx == -1)
10200 asection *splt = htab->elf.splt;
10201 if (!htab->elf.dynamic_sections_created
10202 || h->dynindx == -1)
10203 splt = htab->elf.iplt;
10205 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
10207 if (h == htab->tls_get_addr && !htab->params->no_tls_get_addr_opt)
10209 bfd_put_32 (output_bfd, LWZ_11_3, p);
10211 bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
10213 bfd_put_32 (output_bfd, MR_0_3, p);
10215 bfd_put_32 (output_bfd, CMPWI_11_0, p);
10217 bfd_put_32 (output_bfd, ADD_3_12_2, p);
10219 bfd_put_32 (output_bfd, BEQLR, p);
10221 bfd_put_32 (output_bfd, MR_3_0, p);
10223 bfd_put_32 (output_bfd, NOP, p);
10227 write_glink_stub (ent, splt, p, info);
10229 if (!bfd_link_pic (info))
10230 /* We only need one non-PIC glink stub. */
10240 Elf_Internal_Rela rela;
10243 /* This symbols needs a copy reloc. Set it up. */
10246 fprintf (stderr, ", copy");
10249 BFD_ASSERT (h->dynindx != -1);
10251 if (ppc_elf_hash_entry (h)->has_sda_refs)
10253 else if (h->root.u.def.section == htab->elf.sdynrelro)
10254 s = htab->elf.sreldynrelro;
10256 s = htab->elf.srelbss;
10257 BFD_ASSERT (s != NULL);
10259 rela.r_offset = SYM_VAL (h);
10260 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
10262 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
10263 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10267 fprintf (stderr, "\n");
10273 static enum elf_reloc_type_class
10274 ppc_elf_reloc_type_class (const struct bfd_link_info *info,
10275 const asection *rel_sec,
10276 const Elf_Internal_Rela *rela)
10278 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
10280 if (rel_sec == htab->elf.irelplt)
10281 return reloc_class_ifunc;
10283 switch (ELF32_R_TYPE (rela->r_info))
10285 case R_PPC_RELATIVE:
10286 return reloc_class_relative;
10287 case R_PPC_JMP_SLOT:
10288 return reloc_class_plt;
10290 return reloc_class_copy;
10292 return reloc_class_normal;
10296 /* Finish up the dynamic sections. */
10299 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
10300 struct bfd_link_info *info)
10303 struct ppc_elf_link_hash_table *htab;
10306 bfd_boolean ret = TRUE;
10309 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
10312 htab = ppc_elf_hash_table (info);
10313 dynobj = htab->elf.dynobj;
10314 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
10317 if (htab->elf.hgot != NULL)
10318 got = SYM_VAL (htab->elf.hgot);
10320 if (htab->elf.dynamic_sections_created)
10322 Elf32_External_Dyn *dyncon, *dynconend;
10324 BFD_ASSERT (htab->elf.splt != NULL && sdyn != NULL);
10326 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10327 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10328 for (; dyncon < dynconend; dyncon++)
10330 Elf_Internal_Dyn dyn;
10333 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10338 if (htab->is_vxworks)
10339 s = htab->elf.sgotplt;
10341 s = htab->elf.splt;
10342 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10346 dyn.d_un.d_val = htab->elf.srelplt->size;
10350 s = htab->elf.srelplt;
10351 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10355 dyn.d_un.d_ptr = got;
10359 if (htab->local_ifunc_resolver)
10360 info->callbacks->einfo
10361 (_("%X%P: text relocations and GNU indirect "
10362 "functions will result in a segfault at runtime\n"));
10363 else if (htab->maybe_local_ifunc_resolver)
10364 info->callbacks->einfo
10365 (_("%P: warning: text relocations and GNU indirect "
10366 "functions may result in a segfault at runtime\n"));
10370 if (htab->is_vxworks
10371 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10376 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10380 if (htab->elf.sgot != NULL
10381 && htab->elf.sgot->output_section != bfd_abs_section_ptr)
10383 if (htab->elf.hgot->root.u.def.section == htab->elf.sgot
10384 || htab->elf.hgot->root.u.def.section == htab->elf.sgotplt)
10386 unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
10388 p += htab->elf.hgot->root.u.def.value;
10389 if (htab->plt_type == PLT_OLD)
10391 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
10392 so that a function can easily find the address of
10393 _GLOBAL_OFFSET_TABLE_. */
10394 BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
10395 < htab->elf.hgot->root.u.def.section->size);
10396 bfd_put_32 (output_bfd, 0x4e800021, p - 4);
10401 bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
10402 BFD_ASSERT (htab->elf.hgot->root.u.def.value
10403 < htab->elf.hgot->root.u.def.section->size);
10404 bfd_put_32 (output_bfd, val, p);
10409 /* xgettext:c-format */
10410 info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
10411 htab->elf.hgot->root.root.string,
10412 (htab->elf.sgotplt != NULL
10413 ? htab->elf.sgotplt->name
10414 : htab->elf.sgot->name));
10415 bfd_set_error (bfd_error_bad_value);
10419 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
10422 /* Fill in the first entry in the VxWorks procedure linkage table. */
10423 if (htab->is_vxworks
10424 && htab->elf.splt != NULL
10425 && htab->elf.splt->size != 0
10426 && htab->elf.splt->output_section != bfd_abs_section_ptr)
10428 asection *splt = htab->elf.splt;
10429 /* Use the right PLT. */
10430 const bfd_vma *plt_entry = (bfd_link_pic (info)
10431 ? ppc_elf_vxworks_pic_plt0_entry
10432 : ppc_elf_vxworks_plt0_entry);
10434 if (!bfd_link_pic (info))
10436 bfd_vma got_value = SYM_VAL (htab->elf.hgot);
10438 bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
10439 splt->contents + 0);
10440 bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
10441 splt->contents + 4);
10445 bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
10446 bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
10448 bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
10449 bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
10450 bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
10451 bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
10452 bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
10453 bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
10455 if (! bfd_link_pic (info))
10457 Elf_Internal_Rela rela;
10460 loc = htab->srelplt2->contents;
10462 /* Output the @ha relocation for the first instruction. */
10463 rela.r_offset = (htab->elf.splt->output_section->vma
10464 + htab->elf.splt->output_offset
10466 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10468 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10469 loc += sizeof (Elf32_External_Rela);
10471 /* Output the @l relocation for the second instruction. */
10472 rela.r_offset = (htab->elf.splt->output_section->vma
10473 + htab->elf.splt->output_offset
10475 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10477 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
10478 loc += sizeof (Elf32_External_Rela);
10480 /* Fix up the remaining relocations. They may have the wrong
10481 symbol index for _G_O_T_ or _P_L_T_ depending on the order
10482 in which symbols were output. */
10483 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
10485 Elf_Internal_Rela rel;
10487 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10488 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
10489 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10490 loc += sizeof (Elf32_External_Rela);
10492 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10493 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
10494 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10495 loc += sizeof (Elf32_External_Rela);
10497 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
10498 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
10499 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
10500 loc += sizeof (Elf32_External_Rela);
10505 if (htab->glink != NULL
10506 && htab->glink->contents != NULL
10507 && htab->elf.dynamic_sections_created)
10510 unsigned char *endp;
10515 * PIC glink code is the following:
10517 * # ith PLT code stub.
10518 * addis 11,30,(plt+(i-1)*4-got)@ha
10519 * lwz 11,(plt+(i-1)*4-got)@l(11)
10523 * # A table of branches, one for each plt entry.
10524 * # The idea is that the plt call stub loads ctr and r11 with these
10525 * # addresses, so (r11 - res_0) gives the plt index * 4.
10526 * res_0: b PLTresolve
10527 * res_1: b PLTresolve
10529 * # Some number of entries towards the end can be nops
10535 * addis 11,11,(1f-res_0)@ha
10538 * 1: addi 11,11,(1b-res_0)@l
10541 * sub 11,11,12 # r11 = index * 4
10542 * addis 12,12,(got+4-1b)@ha
10543 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
10544 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
10547 * add 11,0,11 # r11 = index * 12 = reloc offset.
10550 static const unsigned int pic_plt_resolve[] =
10571 * Non-PIC glink code is a little simpler.
10573 * # ith PLT code stub.
10574 * lis 11,(plt+(i-1)*4)@ha
10575 * lwz 11,(plt+(i-1)*4)@l(11)
10579 * The branch table is the same, then comes
10582 * lis 12,(got+4)@ha
10583 * addis 11,11,(-res_0)@ha
10584 * lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
10585 * addi 11,11,(-res_0)@l # r11 = index * 4
10588 * lwz 12,(got+8)@l(12) # got[2] contains the map address
10589 * add 11,0,11 # r11 = index * 12 = reloc offset.
10592 static const unsigned int plt_resolve[] =
10612 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
10614 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
10617 /* Build the branch table, one for each plt entry (less one),
10618 and perhaps some padding. */
10619 p = htab->glink->contents;
10620 p += htab->glink_pltresolve;
10621 endp = htab->glink->contents;
10622 endp += htab->glink->size - GLINK_PLTRESOLVE;
10623 while (p < endp - (htab->params->ppc476_workaround ? 0 : 8 * 4))
10625 bfd_put_32 (output_bfd, B + endp - p, p);
10630 bfd_put_32 (output_bfd, NOP, p);
10634 res0 = (htab->glink_pltresolve
10635 + htab->glink->output_section->vma
10636 + htab->glink->output_offset);
10638 if (htab->params->ppc476_workaround)
10640 /* Ensure that a call stub at the end of a page doesn't
10641 result in prefetch over the end of the page into the
10642 glink branch table. */
10643 bfd_vma pagesize = (bfd_vma) 1 << htab->params->pagesize_p2;
10645 bfd_vma glink_start = (htab->glink->output_section->vma
10646 + htab->glink->output_offset);
10648 for (page_addr = res0 & -pagesize;
10649 page_addr > glink_start;
10650 page_addr -= pagesize)
10652 /* We have a plt call stub that may need fixing. */
10656 loc = htab->glink->contents + page_addr - 4 - glink_start;
10657 insn = bfd_get_32 (output_bfd, loc);
10660 /* By alignment, we know that there must be at least
10661 one other call stub before this one. */
10662 insn = bfd_get_32 (output_bfd, loc - 16);
10664 bfd_put_32 (output_bfd, B | (-16 & 0x3fffffc), loc);
10666 bfd_put_32 (output_bfd, B | (-20 & 0x3fffffc), loc);
10671 /* Last comes the PLTresolve stub. */
10672 if (bfd_link_pic (info))
10676 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
10678 unsigned int insn = pic_plt_resolve[i];
10680 if (htab->params->ppc476_workaround && insn == NOP)
10682 bfd_put_32 (output_bfd, insn, p);
10685 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
10687 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
10688 + htab->glink->output_section->vma
10689 + htab->glink->output_offset);
10691 bfd_put_32 (output_bfd,
10692 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
10693 bfd_put_32 (output_bfd,
10694 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
10695 bfd_put_32 (output_bfd,
10696 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
10697 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
10699 bfd_put_32 (output_bfd,
10700 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10701 bfd_put_32 (output_bfd,
10702 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
10706 bfd_put_32 (output_bfd,
10707 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
10708 bfd_put_32 (output_bfd,
10709 LWZ_12_12 + 4, p + 9*4);
10714 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
10716 unsigned int insn = plt_resolve[i];
10718 if (htab->params->ppc476_workaround && insn == NOP)
10720 bfd_put_32 (output_bfd, insn, p);
10723 p -= 4 * ARRAY_SIZE (plt_resolve);
10725 bfd_put_32 (output_bfd,
10726 LIS_12 + PPC_HA (got + 4), p + 0*4);
10727 bfd_put_32 (output_bfd,
10728 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
10729 bfd_put_32 (output_bfd,
10730 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
10731 if (PPC_HA (got + 4) == PPC_HA (got + 8))
10733 bfd_put_32 (output_bfd,
10734 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
10735 bfd_put_32 (output_bfd,
10736 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
10740 bfd_put_32 (output_bfd,
10741 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
10742 bfd_put_32 (output_bfd,
10743 LWZ_12_12 + 4, p + 6*4);
10748 if (htab->glink_eh_frame != NULL
10749 && htab->glink_eh_frame->contents != NULL)
10751 unsigned char *p = htab->glink_eh_frame->contents;
10754 p += sizeof (glink_eh_frame_cie);
10759 /* Offset to .glink. */
10760 val = (htab->glink->output_section->vma
10761 + htab->glink->output_offset);
10762 val -= (htab->glink_eh_frame->output_section->vma
10763 + htab->glink_eh_frame->output_offset);
10764 val -= p - htab->glink_eh_frame->contents;
10765 bfd_put_32 (htab->elf.dynobj, val, p);
10767 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
10768 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
10769 htab->glink_eh_frame,
10770 htab->glink_eh_frame->contents))
10777 #define TARGET_LITTLE_SYM powerpc_elf32_le_vec
10778 #define TARGET_LITTLE_NAME "elf32-powerpcle"
10779 #define TARGET_BIG_SYM powerpc_elf32_vec
10780 #define TARGET_BIG_NAME "elf32-powerpc"
10781 #define ELF_ARCH bfd_arch_powerpc
10782 #define ELF_TARGET_ID PPC32_ELF_DATA
10783 #define ELF_MACHINE_CODE EM_PPC
10784 #ifdef __QNXTARGET__
10785 #define ELF_MAXPAGESIZE 0x1000
10786 #define ELF_COMMONPAGESIZE 0x1000
10788 #define ELF_MAXPAGESIZE 0x10000
10789 #define ELF_COMMONPAGESIZE 0x10000
10791 #define ELF_MINPAGESIZE 0x1000
10792 #define elf_info_to_howto ppc_elf_info_to_howto
10794 #ifdef EM_CYGNUS_POWERPC
10795 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
10799 #define ELF_MACHINE_ALT2 EM_PPC_OLD
10802 #define elf_backend_plt_not_loaded 1
10803 #define elf_backend_want_dynrelro 1
10804 #define elf_backend_can_gc_sections 1
10805 #define elf_backend_can_refcount 1
10806 #define elf_backend_rela_normal 1
10807 #define elf_backend_caches_rawsize 1
10809 #define bfd_elf32_mkobject ppc_elf_mkobject
10810 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
10811 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
10812 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
10813 #define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
10814 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
10815 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
10816 #define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
10818 #define elf_backend_object_p ppc_elf_object_p
10819 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
10820 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
10821 #define elf_backend_relocate_section ppc_elf_relocate_section
10822 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
10823 #define elf_backend_check_relocs ppc_elf_check_relocs
10824 #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
10825 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
10826 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
10827 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
10828 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
10829 #define elf_backend_hash_symbol ppc_elf_hash_symbol
10830 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
10831 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
10832 #define elf_backend_fake_sections ppc_elf_fake_sections
10833 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
10834 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
10835 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
10836 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
10837 #define elf_backend_write_core_note ppc_elf_write_core_note
10838 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
10839 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
10840 #define elf_backend_final_write_processing ppc_elf_final_write_processing
10841 #define elf_backend_write_section ppc_elf_write_section
10842 #define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
10843 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
10844 #define elf_backend_action_discarded ppc_elf_action_discarded
10845 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
10846 #define elf_backend_lookup_section_flags_hook ppc_elf_lookup_section_flags
10848 #include "elf32-target.h"
10850 /* FreeBSD Target */
10852 #undef TARGET_LITTLE_SYM
10853 #undef TARGET_LITTLE_NAME
10855 #undef TARGET_BIG_SYM
10856 #define TARGET_BIG_SYM powerpc_elf32_fbsd_vec
10857 #undef TARGET_BIG_NAME
10858 #define TARGET_BIG_NAME "elf32-powerpc-freebsd"
10861 #define ELF_OSABI ELFOSABI_FREEBSD
10864 #define elf32_bed elf32_powerpc_fbsd_bed
10866 #include "elf32-target.h"
10868 /* VxWorks Target */
10870 #undef TARGET_LITTLE_SYM
10871 #undef TARGET_LITTLE_NAME
10873 #undef TARGET_BIG_SYM
10874 #define TARGET_BIG_SYM powerpc_elf32_vxworks_vec
10875 #undef TARGET_BIG_NAME
10876 #define TARGET_BIG_NAME "elf32-powerpc-vxworks"
10880 /* VxWorks uses the elf default section flags for .plt. */
10881 static const struct bfd_elf_special_section *
10882 ppc_elf_vxworks_get_sec_type_attr (bfd *abfd, asection *sec)
10884 if (sec->name == NULL)
10887 if (strcmp (sec->name, ".plt") == 0)
10888 return _bfd_elf_get_sec_type_attr (abfd, sec);
10890 return ppc_elf_get_sec_type_attr (abfd, sec);
10893 /* Like ppc_elf_link_hash_table_create, but overrides
10894 appropriately for VxWorks. */
10895 static struct bfd_link_hash_table *
10896 ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
10898 struct bfd_link_hash_table *ret;
10900 ret = ppc_elf_link_hash_table_create (abfd);
10903 struct ppc_elf_link_hash_table *htab
10904 = (struct ppc_elf_link_hash_table *)ret;
10905 htab->is_vxworks = 1;
10906 htab->plt_type = PLT_VXWORKS;
10907 htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
10908 htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
10909 htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
10914 /* Tweak magic VxWorks symbols as they are loaded. */
10916 ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
10917 struct bfd_link_info *info,
10918 Elf_Internal_Sym *sym,
10919 const char **namep,
10924 if (!elf_vxworks_add_symbol_hook (abfd, info, sym, namep, flagsp, secp,
10928 return ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp);
10932 ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10934 ppc_elf_final_write_processing (abfd, linker);
10935 elf_vxworks_final_write_processing (abfd, linker);
10938 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
10940 #undef elf_backend_want_plt_sym
10941 #define elf_backend_want_plt_sym 1
10942 #undef elf_backend_want_got_plt
10943 #define elf_backend_want_got_plt 1
10944 #undef elf_backend_got_symbol_offset
10945 #define elf_backend_got_symbol_offset 0
10946 #undef elf_backend_plt_not_loaded
10947 #define elf_backend_plt_not_loaded 0
10948 #undef elf_backend_plt_readonly
10949 #define elf_backend_plt_readonly 1
10950 #undef elf_backend_got_header_size
10951 #define elf_backend_got_header_size 12
10952 #undef elf_backend_dtrel_excludes_plt
10953 #define elf_backend_dtrel_excludes_plt 1
10955 #undef bfd_elf32_get_synthetic_symtab
10957 #undef bfd_elf32_bfd_link_hash_table_create
10958 #define bfd_elf32_bfd_link_hash_table_create \
10959 ppc_elf_vxworks_link_hash_table_create
10960 #undef elf_backend_add_symbol_hook
10961 #define elf_backend_add_symbol_hook \
10962 ppc_elf_vxworks_add_symbol_hook
10963 #undef elf_backend_link_output_symbol_hook
10964 #define elf_backend_link_output_symbol_hook \
10965 elf_vxworks_link_output_symbol_hook
10966 #undef elf_backend_final_write_processing
10967 #define elf_backend_final_write_processing \
10968 ppc_elf_vxworks_final_write_processing
10969 #undef elf_backend_get_sec_type_attr
10970 #define elf_backend_get_sec_type_attr \
10971 ppc_elf_vxworks_get_sec_type_attr
10972 #undef elf_backend_emit_relocs
10973 #define elf_backend_emit_relocs \
10974 elf_vxworks_emit_relocs
10977 #define elf32_bed ppc_elf_vxworks_bed
10978 #undef elf_backend_post_process_headers
10980 #include "elf32-target.h"