1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
33 #include "elf/ppc64.h"
34 #include "elf64-ppc.h"
36 static bfd_reloc_status_type ppc64_elf_ha_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38 static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_toc_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc64_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
57 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58 #define TARGET_LITTLE_NAME "elf64-powerpcle"
59 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60 #define TARGET_BIG_NAME "elf64-powerpc"
61 #define ELF_ARCH bfd_arch_powerpc
62 #define ELF_MACHINE_CODE EM_PPC64
63 #define ELF_MAXPAGESIZE 0x10000
64 #define elf_info_to_howto ppc64_elf_info_to_howto
66 #define elf_backend_want_got_sym 0
67 #define elf_backend_want_plt_sym 0
68 #define elf_backend_plt_alignment 3
69 #define elf_backend_plt_not_loaded 1
70 #define elf_backend_got_symbol_offset 0
71 #define elf_backend_got_header_size 8
72 #define elf_backend_can_gc_sections 1
73 #define elf_backend_can_refcount 1
74 #define elf_backend_rela_normal 1
76 #define bfd_elf64_mkobject ppc64_elf_mkobject
77 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
78 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
79 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
80 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
81 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
82 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
84 #define elf_backend_object_p ppc64_elf_object_p
85 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
86 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
87 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
88 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
89 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
90 #define elf_backend_check_directives ppc64_elf_check_directives
91 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
92 #define elf_backend_check_relocs ppc64_elf_check_relocs
93 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
94 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
95 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
96 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
97 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
98 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
99 #define elf_backend_relocate_section ppc64_elf_relocate_section
100 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
101 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
102 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
103 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
104 #define elf_backend_special_sections ppc64_elf_special_sections
106 /* The name of the dynamic interpreter. This is put in the .interp
108 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
110 /* The size in bytes of an entry in the procedure linkage table. */
111 #define PLT_ENTRY_SIZE 24
113 /* The initial size of the plt reserved for the dynamic linker. */
114 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
116 /* TOC base pointers offset from start of TOC. */
117 #define TOC_BASE_OFF 0x8000
119 /* Offset of tp and dtp pointers from start of TLS block. */
120 #define TP_OFFSET 0x7000
121 #define DTP_OFFSET 0x8000
123 /* .plt call stub instructions. The normal stub is like this, but
124 sometimes the .plt entry crosses a 64k boundary and we need to
125 insert an addis to adjust r12. */
126 #define PLT_CALL_STUB_SIZE (7*4)
127 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
128 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
129 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
130 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
131 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
132 /* ld %r11,xxx+16@l(%r12) */
133 #define BCTR 0x4e800420 /* bctr */
136 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
137 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
139 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
141 /* glink call stub instructions. We enter with the index in R0, and the
142 address of glink entry in CTR. From that, we can calculate PLT0. */
143 #define GLINK_CALL_STUB_SIZE (16*4)
144 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
145 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
146 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
147 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
148 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
149 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
150 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
151 /* sub %r12,%r12,%r11 */
152 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
153 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
154 /* ld %r11,xxx@l(%r12) */
155 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
158 /* ld %r11,16(%r12) */
162 #define NOP 0x60000000
164 /* Some other nops. */
165 #define CROR_151515 0x4def7b82
166 #define CROR_313131 0x4ffffb82
168 /* .glink entries for the first 32k functions are two instructions. */
169 #define LI_R0_0 0x38000000 /* li %r0,0 */
170 #define B_DOT 0x48000000 /* b . */
172 /* After that, we need two instructions to load the index, followed by
174 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
175 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
177 /* Instructions used by the save and restore reg functions. */
178 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
179 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
180 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
181 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
182 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
183 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
184 #define LI_R12_0 0x39800000 /* li %r12,0 */
185 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
186 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
187 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
188 #define BLR 0x4e800020 /* blr */
190 /* Since .opd is an array of descriptors and each entry will end up
191 with identical R_PPC64_RELATIVE relocs, there is really no need to
192 propagate .opd relocs; The dynamic linker should be taught to
193 relocate .opd without reloc entries. */
194 #ifndef NO_OPD_RELOCS
195 #define NO_OPD_RELOCS 0
198 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
200 /* Relocation HOWTO's. */
201 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
203 static reloc_howto_type ppc64_elf_howto_raw[] = {
204 /* This reloc does nothing. */
205 HOWTO (R_PPC64_NONE, /* type */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
209 FALSE, /* pc_relative */
211 complain_overflow_dont, /* complain_on_overflow */
212 bfd_elf_generic_reloc, /* special_function */
213 "R_PPC64_NONE", /* name */
214 FALSE, /* partial_inplace */
217 FALSE), /* pcrel_offset */
219 /* A standard 32 bit relocation. */
220 HOWTO (R_PPC64_ADDR32, /* type */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
224 FALSE, /* pc_relative */
226 complain_overflow_bitfield, /* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_PPC64_ADDR32", /* name */
229 FALSE, /* partial_inplace */
231 0xffffffff, /* dst_mask */
232 FALSE), /* pcrel_offset */
234 /* An absolute 26 bit branch; the lower two bits must be zero.
235 FIXME: we don't check that, we just clear them. */
236 HOWTO (R_PPC64_ADDR24, /* type */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
240 FALSE, /* pc_relative */
242 complain_overflow_bitfield, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_PPC64_ADDR24", /* name */
245 FALSE, /* partial_inplace */
247 0x03fffffc, /* dst_mask */
248 FALSE), /* pcrel_offset */
250 /* A standard 16 bit relocation. */
251 HOWTO (R_PPC64_ADDR16, /* type */
253 1, /* size (0 = byte, 1 = short, 2 = long) */
255 FALSE, /* pc_relative */
257 complain_overflow_bitfield, /* complain_on_overflow */
258 bfd_elf_generic_reloc, /* special_function */
259 "R_PPC64_ADDR16", /* name */
260 FALSE, /* partial_inplace */
262 0xffff, /* dst_mask */
263 FALSE), /* pcrel_offset */
265 /* A 16 bit relocation without overflow. */
266 HOWTO (R_PPC64_ADDR16_LO, /* type */
268 1, /* size (0 = byte, 1 = short, 2 = long) */
270 FALSE, /* pc_relative */
272 complain_overflow_dont,/* complain_on_overflow */
273 bfd_elf_generic_reloc, /* special_function */
274 "R_PPC64_ADDR16_LO", /* name */
275 FALSE, /* partial_inplace */
277 0xffff, /* dst_mask */
278 FALSE), /* pcrel_offset */
280 /* Bits 16-31 of an address. */
281 HOWTO (R_PPC64_ADDR16_HI, /* type */
283 1, /* size (0 = byte, 1 = short, 2 = long) */
285 FALSE, /* pc_relative */
287 complain_overflow_dont, /* complain_on_overflow */
288 bfd_elf_generic_reloc, /* special_function */
289 "R_PPC64_ADDR16_HI", /* name */
290 FALSE, /* partial_inplace */
292 0xffff, /* dst_mask */
293 FALSE), /* pcrel_offset */
295 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
296 bits, treated as a signed number, is negative. */
297 HOWTO (R_PPC64_ADDR16_HA, /* type */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE, /* pc_relative */
303 complain_overflow_dont, /* complain_on_overflow */
304 ppc64_elf_ha_reloc, /* special_function */
305 "R_PPC64_ADDR16_HA", /* name */
306 FALSE, /* partial_inplace */
308 0xffff, /* dst_mask */
309 FALSE), /* pcrel_offset */
311 /* An absolute 16 bit branch; the lower two bits must be zero.
312 FIXME: we don't check that, we just clear them. */
313 HOWTO (R_PPC64_ADDR14, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_bitfield, /* complain_on_overflow */
320 ppc64_elf_branch_reloc, /* special_function */
321 "R_PPC64_ADDR14", /* name */
322 FALSE, /* partial_inplace */
324 0x0000fffc, /* 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 expected to be taken. The lower two
329 bits must be zero. */
330 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE, /* pc_relative */
336 complain_overflow_bitfield, /* complain_on_overflow */
337 ppc64_elf_brtaken_reloc, /* special_function */
338 "R_PPC64_ADDR14_BRTAKEN",/* name */
339 FALSE, /* partial_inplace */
341 0x0000fffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
344 /* An absolute 16 bit branch, for which bit 10 should be set to
345 indicate that the branch is not expected to be taken. The lower
346 two bits must be zero. */
347 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE, /* pc_relative */
353 complain_overflow_bitfield, /* complain_on_overflow */
354 ppc64_elf_brtaken_reloc, /* special_function */
355 "R_PPC64_ADDR14_BRNTAKEN",/* name */
356 FALSE, /* partial_inplace */
358 0x0000fffc, /* dst_mask */
359 FALSE), /* pcrel_offset */
361 /* A relative 26 bit branch; the lower two bits must be zero. */
362 HOWTO (R_PPC64_REL24, /* type */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
366 TRUE, /* pc_relative */
368 complain_overflow_signed, /* complain_on_overflow */
369 ppc64_elf_branch_reloc, /* special_function */
370 "R_PPC64_REL24", /* name */
371 FALSE, /* partial_inplace */
373 0x03fffffc, /* dst_mask */
374 TRUE), /* pcrel_offset */
376 /* A relative 16 bit branch; the lower two bits must be zero. */
377 HOWTO (R_PPC64_REL14, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 ppc64_elf_branch_reloc, /* special_function */
385 "R_PPC64_REL14", /* name */
386 FALSE, /* partial_inplace */
388 0x0000fffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is expected to be taken. The lower two bits must be
394 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE, /* pc_relative */
400 complain_overflow_signed, /* complain_on_overflow */
401 ppc64_elf_brtaken_reloc, /* special_function */
402 "R_PPC64_REL14_BRTAKEN", /* name */
403 FALSE, /* partial_inplace */
405 0x0000fffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
408 /* A relative 16 bit branch. Bit 10 should be set to indicate that
409 the branch is not expected to be taken. The lower two bits must
411 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
415 TRUE, /* pc_relative */
417 complain_overflow_signed, /* complain_on_overflow */
418 ppc64_elf_brtaken_reloc, /* special_function */
419 "R_PPC64_REL14_BRNTAKEN",/* name */
420 FALSE, /* partial_inplace */
422 0x0000fffc, /* dst_mask */
423 TRUE), /* pcrel_offset */
425 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
427 HOWTO (R_PPC64_GOT16, /* type */
429 1, /* size (0 = byte, 1 = short, 2 = long) */
431 FALSE, /* pc_relative */
433 complain_overflow_signed, /* complain_on_overflow */
434 ppc64_elf_unhandled_reloc, /* special_function */
435 "R_PPC64_GOT16", /* name */
436 FALSE, /* partial_inplace */
438 0xffff, /* dst_mask */
439 FALSE), /* pcrel_offset */
441 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
443 HOWTO (R_PPC64_GOT16_LO, /* type */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE, /* pc_relative */
449 complain_overflow_dont, /* complain_on_overflow */
450 ppc64_elf_unhandled_reloc, /* special_function */
451 "R_PPC64_GOT16_LO", /* name */
452 FALSE, /* partial_inplace */
454 0xffff, /* dst_mask */
455 FALSE), /* pcrel_offset */
457 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
459 HOWTO (R_PPC64_GOT16_HI, /* type */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
463 FALSE, /* pc_relative */
465 complain_overflow_dont,/* complain_on_overflow */
466 ppc64_elf_unhandled_reloc, /* special_function */
467 "R_PPC64_GOT16_HI", /* name */
468 FALSE, /* partial_inplace */
470 0xffff, /* dst_mask */
471 FALSE), /* pcrel_offset */
473 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
475 HOWTO (R_PPC64_GOT16_HA, /* type */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE, /* pc_relative */
481 complain_overflow_dont,/* complain_on_overflow */
482 ppc64_elf_unhandled_reloc, /* special_function */
483 "R_PPC64_GOT16_HA", /* name */
484 FALSE, /* partial_inplace */
486 0xffff, /* dst_mask */
487 FALSE), /* pcrel_offset */
489 /* This is used only by the dynamic linker. The symbol should exist
490 both in the object being run and in some shared library. The
491 dynamic linker copies the data addressed by the symbol from the
492 shared library into the object, because the object being
493 run has to have the data at some particular address. */
494 HOWTO (R_PPC64_COPY, /* type */
496 0, /* this one is variable size */
498 FALSE, /* pc_relative */
500 complain_overflow_dont, /* complain_on_overflow */
501 ppc64_elf_unhandled_reloc, /* special_function */
502 "R_PPC64_COPY", /* name */
503 FALSE, /* partial_inplace */
506 FALSE), /* pcrel_offset */
508 /* Like R_PPC64_ADDR64, but used when setting global offset table
510 HOWTO (R_PPC64_GLOB_DAT, /* type */
512 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
514 FALSE, /* pc_relative */
516 complain_overflow_dont, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc, /* special_function */
518 "R_PPC64_GLOB_DAT", /* name */
519 FALSE, /* partial_inplace */
521 ONES (64), /* dst_mask */
522 FALSE), /* pcrel_offset */
524 /* Created by the link editor. Marks a procedure linkage table
525 entry for a symbol. */
526 HOWTO (R_PPC64_JMP_SLOT, /* type */
528 0, /* size (0 = byte, 1 = short, 2 = long) */
530 FALSE, /* pc_relative */
532 complain_overflow_dont, /* complain_on_overflow */
533 ppc64_elf_unhandled_reloc, /* special_function */
534 "R_PPC64_JMP_SLOT", /* name */
535 FALSE, /* partial_inplace */
538 FALSE), /* pcrel_offset */
540 /* Used only by the dynamic linker. When the object is run, this
541 doubleword64 is set to the load address of the object, plus the
543 HOWTO (R_PPC64_RELATIVE, /* type */
545 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
547 FALSE, /* pc_relative */
549 complain_overflow_dont, /* complain_on_overflow */
550 bfd_elf_generic_reloc, /* special_function */
551 "R_PPC64_RELATIVE", /* name */
552 FALSE, /* partial_inplace */
554 ONES (64), /* dst_mask */
555 FALSE), /* pcrel_offset */
557 /* Like R_PPC64_ADDR32, but may be unaligned. */
558 HOWTO (R_PPC64_UADDR32, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 FALSE, /* pc_relative */
564 complain_overflow_bitfield, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC64_UADDR32", /* name */
567 FALSE, /* partial_inplace */
569 0xffffffff, /* dst_mask */
570 FALSE), /* pcrel_offset */
572 /* Like R_PPC64_ADDR16, but may be unaligned. */
573 HOWTO (R_PPC64_UADDR16, /* type */
575 1, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE, /* pc_relative */
579 complain_overflow_bitfield, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC64_UADDR16", /* name */
582 FALSE, /* partial_inplace */
584 0xffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
587 /* 32-bit PC relative. */
588 HOWTO (R_PPC64_REL32, /* type */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
592 TRUE, /* pc_relative */
594 /* FIXME: Verify. Was complain_overflow_bitfield. */
595 complain_overflow_signed, /* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_PPC64_REL32", /* name */
598 FALSE, /* partial_inplace */
600 0xffffffff, /* dst_mask */
601 TRUE), /* pcrel_offset */
603 /* 32-bit relocation to the symbol's procedure linkage table. */
604 HOWTO (R_PPC64_PLT32, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 FALSE, /* pc_relative */
610 complain_overflow_bitfield, /* complain_on_overflow */
611 ppc64_elf_unhandled_reloc, /* special_function */
612 "R_PPC64_PLT32", /* name */
613 FALSE, /* partial_inplace */
615 0xffffffff, /* dst_mask */
616 FALSE), /* pcrel_offset */
618 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
619 FIXME: R_PPC64_PLTREL32 not supported. */
620 HOWTO (R_PPC64_PLTREL32, /* type */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
624 TRUE, /* pc_relative */
626 complain_overflow_signed, /* complain_on_overflow */
627 bfd_elf_generic_reloc, /* special_function */
628 "R_PPC64_PLTREL32", /* name */
629 FALSE, /* partial_inplace */
631 0xffffffff, /* dst_mask */
632 TRUE), /* pcrel_offset */
634 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
636 HOWTO (R_PPC64_PLT16_LO, /* type */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
640 FALSE, /* pc_relative */
642 complain_overflow_dont, /* complain_on_overflow */
643 ppc64_elf_unhandled_reloc, /* special_function */
644 "R_PPC64_PLT16_LO", /* name */
645 FALSE, /* partial_inplace */
647 0xffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
650 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
652 HOWTO (R_PPC64_PLT16_HI, /* type */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 FALSE, /* pc_relative */
658 complain_overflow_dont, /* complain_on_overflow */
659 ppc64_elf_unhandled_reloc, /* special_function */
660 "R_PPC64_PLT16_HI", /* name */
661 FALSE, /* partial_inplace */
663 0xffff, /* dst_mask */
664 FALSE), /* pcrel_offset */
666 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
668 HOWTO (R_PPC64_PLT16_HA, /* type */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
672 FALSE, /* pc_relative */
674 complain_overflow_dont, /* complain_on_overflow */
675 ppc64_elf_unhandled_reloc, /* special_function */
676 "R_PPC64_PLT16_HA", /* name */
677 FALSE, /* partial_inplace */
679 0xffff, /* dst_mask */
680 FALSE), /* pcrel_offset */
682 /* 16-bit section relative relocation. */
683 HOWTO (R_PPC64_SECTOFF, /* type */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE, /* pc_relative */
689 complain_overflow_bitfield, /* complain_on_overflow */
690 ppc64_elf_sectoff_reloc, /* special_function */
691 "R_PPC64_SECTOFF", /* name */
692 FALSE, /* partial_inplace */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
697 /* Like R_PPC64_SECTOFF, but no overflow warning. */
698 HOWTO (R_PPC64_SECTOFF_LO, /* type */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
702 FALSE, /* pc_relative */
704 complain_overflow_dont, /* complain_on_overflow */
705 ppc64_elf_sectoff_reloc, /* special_function */
706 "R_PPC64_SECTOFF_LO", /* name */
707 FALSE, /* partial_inplace */
709 0xffff, /* dst_mask */
710 FALSE), /* pcrel_offset */
712 /* 16-bit upper half section relative relocation. */
713 HOWTO (R_PPC64_SECTOFF_HI, /* type */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
717 FALSE, /* pc_relative */
719 complain_overflow_dont, /* complain_on_overflow */
720 ppc64_elf_sectoff_reloc, /* special_function */
721 "R_PPC64_SECTOFF_HI", /* name */
722 FALSE, /* partial_inplace */
724 0xffff, /* dst_mask */
725 FALSE), /* pcrel_offset */
727 /* 16-bit upper half adjusted section relative relocation. */
728 HOWTO (R_PPC64_SECTOFF_HA, /* type */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
732 FALSE, /* pc_relative */
734 complain_overflow_dont, /* complain_on_overflow */
735 ppc64_elf_sectoff_ha_reloc, /* special_function */
736 "R_PPC64_SECTOFF_HA", /* name */
737 FALSE, /* partial_inplace */
739 0xffff, /* dst_mask */
740 FALSE), /* pcrel_offset */
742 /* Like R_PPC64_REL24 without touching the two least significant bits. */
743 HOWTO (R_PPC64_REL30, /* type */
745 2, /* size (0 = byte, 1 = short, 2 = long) */
747 TRUE, /* pc_relative */
749 complain_overflow_dont, /* complain_on_overflow */
750 bfd_elf_generic_reloc, /* special_function */
751 "R_PPC64_REL30", /* name */
752 FALSE, /* partial_inplace */
754 0xfffffffc, /* dst_mask */
755 TRUE), /* pcrel_offset */
757 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
759 /* A standard 64-bit relocation. */
760 HOWTO (R_PPC64_ADDR64, /* type */
762 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
764 FALSE, /* pc_relative */
766 complain_overflow_dont, /* complain_on_overflow */
767 bfd_elf_generic_reloc, /* special_function */
768 "R_PPC64_ADDR64", /* name */
769 FALSE, /* partial_inplace */
771 ONES (64), /* dst_mask */
772 FALSE), /* pcrel_offset */
774 /* The bits 32-47 of an address. */
775 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
777 1, /* size (0 = byte, 1 = short, 2 = long) */
779 FALSE, /* pc_relative */
781 complain_overflow_dont, /* complain_on_overflow */
782 bfd_elf_generic_reloc, /* special_function */
783 "R_PPC64_ADDR16_HIGHER", /* name */
784 FALSE, /* partial_inplace */
786 0xffff, /* dst_mask */
787 FALSE), /* pcrel_offset */
789 /* The bits 32-47 of an address, plus 1 if the contents of the low
790 16 bits, treated as a signed number, is negative. */
791 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE, /* pc_relative */
797 complain_overflow_dont, /* complain_on_overflow */
798 ppc64_elf_ha_reloc, /* special_function */
799 "R_PPC64_ADDR16_HIGHERA", /* name */
800 FALSE, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
805 /* The bits 48-63 of an address. */
806 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
810 FALSE, /* pc_relative */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_PPC64_ADDR16_HIGHEST", /* name */
815 FALSE, /* partial_inplace */
817 0xffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
820 /* The bits 48-63 of an address, plus 1 if the contents of the low
821 16 bits, treated as a signed number, is negative. */
822 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE, /* pc_relative */
828 complain_overflow_dont, /* complain_on_overflow */
829 ppc64_elf_ha_reloc, /* special_function */
830 "R_PPC64_ADDR16_HIGHESTA", /* name */
831 FALSE, /* partial_inplace */
833 0xffff, /* dst_mask */
834 FALSE), /* pcrel_offset */
836 /* Like ADDR64, but may be unaligned. */
837 HOWTO (R_PPC64_UADDR64, /* type */
839 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
841 FALSE, /* pc_relative */
843 complain_overflow_dont, /* complain_on_overflow */
844 bfd_elf_generic_reloc, /* special_function */
845 "R_PPC64_UADDR64", /* name */
846 FALSE, /* partial_inplace */
848 ONES (64), /* dst_mask */
849 FALSE), /* pcrel_offset */
851 /* 64-bit relative relocation. */
852 HOWTO (R_PPC64_REL64, /* type */
854 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
856 TRUE, /* pc_relative */
858 complain_overflow_dont, /* complain_on_overflow */
859 bfd_elf_generic_reloc, /* special_function */
860 "R_PPC64_REL64", /* name */
861 FALSE, /* partial_inplace */
863 ONES (64), /* dst_mask */
864 TRUE), /* pcrel_offset */
866 /* 64-bit relocation to the symbol's procedure linkage table. */
867 HOWTO (R_PPC64_PLT64, /* type */
869 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
871 FALSE, /* pc_relative */
873 complain_overflow_dont, /* complain_on_overflow */
874 ppc64_elf_unhandled_reloc, /* special_function */
875 "R_PPC64_PLT64", /* name */
876 FALSE, /* partial_inplace */
878 ONES (64), /* dst_mask */
879 FALSE), /* pcrel_offset */
881 /* 64-bit PC relative relocation to the symbol's procedure linkage
883 /* FIXME: R_PPC64_PLTREL64 not supported. */
884 HOWTO (R_PPC64_PLTREL64, /* type */
886 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
888 TRUE, /* pc_relative */
890 complain_overflow_dont, /* complain_on_overflow */
891 ppc64_elf_unhandled_reloc, /* special_function */
892 "R_PPC64_PLTREL64", /* name */
893 FALSE, /* partial_inplace */
895 ONES (64), /* dst_mask */
896 TRUE), /* pcrel_offset */
898 /* 16 bit TOC-relative relocation. */
900 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
901 HOWTO (R_PPC64_TOC16, /* type */
903 1, /* size (0 = byte, 1 = short, 2 = long) */
905 FALSE, /* pc_relative */
907 complain_overflow_signed, /* complain_on_overflow */
908 ppc64_elf_toc_reloc, /* special_function */
909 "R_PPC64_TOC16", /* name */
910 FALSE, /* partial_inplace */
912 0xffff, /* dst_mask */
913 FALSE), /* pcrel_offset */
915 /* 16 bit TOC-relative relocation without overflow. */
917 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
918 HOWTO (R_PPC64_TOC16_LO, /* type */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE, /* pc_relative */
924 complain_overflow_dont, /* complain_on_overflow */
925 ppc64_elf_toc_reloc, /* special_function */
926 "R_PPC64_TOC16_LO", /* name */
927 FALSE, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE), /* pcrel_offset */
932 /* 16 bit TOC-relative relocation, high 16 bits. */
934 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
935 HOWTO (R_PPC64_TOC16_HI, /* type */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE, /* pc_relative */
941 complain_overflow_dont, /* complain_on_overflow */
942 ppc64_elf_toc_reloc, /* special_function */
943 "R_PPC64_TOC16_HI", /* name */
944 FALSE, /* partial_inplace */
946 0xffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
949 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
950 contents of the low 16 bits, treated as a signed number, is
953 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
954 HOWTO (R_PPC64_TOC16_HA, /* type */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE, /* pc_relative */
960 complain_overflow_dont, /* complain_on_overflow */
961 ppc64_elf_toc_ha_reloc, /* special_function */
962 "R_PPC64_TOC16_HA", /* name */
963 FALSE, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
968 /* 64-bit relocation; insert value of TOC base (.TOC.). */
970 /* R_PPC64_TOC 51 doubleword64 .TOC. */
971 HOWTO (R_PPC64_TOC, /* type */
973 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
975 FALSE, /* pc_relative */
977 complain_overflow_bitfield, /* complain_on_overflow */
978 ppc64_elf_toc64_reloc, /* special_function */
979 "R_PPC64_TOC", /* name */
980 FALSE, /* partial_inplace */
982 ONES (64), /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* Like R_PPC64_GOT16, but also informs the link editor that the
986 value to relocate may (!) refer to a PLT entry which the link
987 editor (a) may replace with the symbol value. If the link editor
988 is unable to fully resolve the symbol, it may (b) create a PLT
989 entry and store the address to the new PLT entry in the GOT.
990 This permits lazy resolution of function symbols at run time.
991 The link editor may also skip all of this and just (c) emit a
992 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
993 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
994 HOWTO (R_PPC64_PLTGOT16, /* type */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE, /* pc_relative */
1000 complain_overflow_signed, /* complain_on_overflow */
1001 ppc64_elf_unhandled_reloc, /* special_function */
1002 "R_PPC64_PLTGOT16", /* name */
1003 FALSE, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1008 /* Like R_PPC64_PLTGOT16, but without overflow. */
1009 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE, /* pc_relative */
1016 complain_overflow_dont, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc, /* special_function */
1018 "R_PPC64_PLTGOT16_LO", /* name */
1019 FALSE, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1024 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1025 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE, /* pc_relative */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc, /* special_function */
1034 "R_PPC64_PLTGOT16_HI", /* name */
1035 FALSE, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1041 1 if the contents of the low 16 bits, treated as a signed number,
1043 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1044 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1045 16, /* rightshift */
1046 1, /* size (0 = byte, 1 = short, 2 = long) */
1048 FALSE, /* pc_relative */
1050 complain_overflow_dont,/* complain_on_overflow */
1051 ppc64_elf_unhandled_reloc, /* special_function */
1052 "R_PPC64_PLTGOT16_HA", /* name */
1053 FALSE, /* partial_inplace */
1055 0xffff, /* dst_mask */
1056 FALSE), /* pcrel_offset */
1058 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1059 HOWTO (R_PPC64_ADDR16_DS, /* type */
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 FALSE, /* pc_relative */
1065 complain_overflow_bitfield, /* complain_on_overflow */
1066 bfd_elf_generic_reloc, /* special_function */
1067 "R_PPC64_ADDR16_DS", /* name */
1068 FALSE, /* partial_inplace */
1070 0xfffc, /* dst_mask */
1071 FALSE), /* pcrel_offset */
1073 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1074 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE, /* pc_relative */
1080 complain_overflow_dont,/* complain_on_overflow */
1081 bfd_elf_generic_reloc, /* special_function */
1082 "R_PPC64_ADDR16_LO_DS",/* name */
1083 FALSE, /* partial_inplace */
1085 0xfffc, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1088 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1089 HOWTO (R_PPC64_GOT16_DS, /* type */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE, /* pc_relative */
1095 complain_overflow_signed, /* complain_on_overflow */
1096 ppc64_elf_unhandled_reloc, /* special_function */
1097 "R_PPC64_GOT16_DS", /* name */
1098 FALSE, /* partial_inplace */
1100 0xfffc, /* dst_mask */
1101 FALSE), /* pcrel_offset */
1103 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1104 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE, /* pc_relative */
1110 complain_overflow_dont, /* complain_on_overflow */
1111 ppc64_elf_unhandled_reloc, /* special_function */
1112 "R_PPC64_GOT16_LO_DS", /* name */
1113 FALSE, /* partial_inplace */
1115 0xfffc, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1118 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1119 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 FALSE, /* pc_relative */
1125 complain_overflow_dont, /* complain_on_overflow */
1126 ppc64_elf_unhandled_reloc, /* special_function */
1127 "R_PPC64_PLT16_LO_DS", /* name */
1128 FALSE, /* partial_inplace */
1130 0xfffc, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1133 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1134 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 FALSE, /* pc_relative */
1140 complain_overflow_bitfield, /* complain_on_overflow */
1141 ppc64_elf_sectoff_reloc, /* special_function */
1142 "R_PPC64_SECTOFF_DS", /* name */
1143 FALSE, /* partial_inplace */
1145 0xfffc, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1148 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1149 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE, /* pc_relative */
1155 complain_overflow_dont, /* complain_on_overflow */
1156 ppc64_elf_sectoff_reloc, /* special_function */
1157 "R_PPC64_SECTOFF_LO_DS",/* name */
1158 FALSE, /* partial_inplace */
1160 0xfffc, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1163 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1164 HOWTO (R_PPC64_TOC16_DS, /* type */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 FALSE, /* pc_relative */
1170 complain_overflow_signed, /* complain_on_overflow */
1171 ppc64_elf_toc_reloc, /* special_function */
1172 "R_PPC64_TOC16_DS", /* name */
1173 FALSE, /* partial_inplace */
1175 0xfffc, /* dst_mask */
1176 FALSE), /* pcrel_offset */
1178 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1179 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1183 FALSE, /* pc_relative */
1185 complain_overflow_dont, /* complain_on_overflow */
1186 ppc64_elf_toc_reloc, /* special_function */
1187 "R_PPC64_TOC16_LO_DS", /* name */
1188 FALSE, /* partial_inplace */
1190 0xfffc, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1193 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1194 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1195 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1199 FALSE, /* pc_relative */
1201 complain_overflow_signed, /* complain_on_overflow */
1202 ppc64_elf_unhandled_reloc, /* special_function */
1203 "R_PPC64_PLTGOT16_DS", /* name */
1204 FALSE, /* partial_inplace */
1206 0xfffc, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1209 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1211 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1215 FALSE, /* pc_relative */
1217 complain_overflow_dont, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc, /* special_function */
1219 "R_PPC64_PLTGOT16_LO_DS",/* name */
1220 FALSE, /* partial_inplace */
1222 0xfffc, /* dst_mask */
1223 FALSE), /* pcrel_offset */
1225 /* Marker reloc for TLS. */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 FALSE, /* pc_relative */
1232 complain_overflow_dont, /* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_PPC64_TLS", /* name */
1235 FALSE, /* partial_inplace */
1238 FALSE), /* pcrel_offset */
1240 /* Computes the load module index of the load module that contains the
1241 definition of its TLS sym. */
1242 HOWTO (R_PPC64_DTPMOD64,
1244 4, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE, /* pc_relative */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 ppc64_elf_unhandled_reloc, /* special_function */
1250 "R_PPC64_DTPMOD64", /* name */
1251 FALSE, /* partial_inplace */
1253 ONES (64), /* dst_mask */
1254 FALSE), /* pcrel_offset */
1256 /* Computes a dtv-relative displacement, the difference between the value
1257 of sym+add and the base address of the thread-local storage block that
1258 contains the definition of sym, minus 0x8000. */
1259 HOWTO (R_PPC64_DTPREL64,
1261 4, /* size (0 = byte, 1 = short, 2 = long) */
1263 FALSE, /* pc_relative */
1265 complain_overflow_dont, /* complain_on_overflow */
1266 ppc64_elf_unhandled_reloc, /* special_function */
1267 "R_PPC64_DTPREL64", /* name */
1268 FALSE, /* partial_inplace */
1270 ONES (64), /* dst_mask */
1271 FALSE), /* pcrel_offset */
1273 /* A 16 bit dtprel reloc. */
1274 HOWTO (R_PPC64_DTPREL16,
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 FALSE, /* pc_relative */
1280 complain_overflow_signed, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc, /* special_function */
1282 "R_PPC64_DTPREL16", /* name */
1283 FALSE, /* partial_inplace */
1285 0xffff, /* dst_mask */
1286 FALSE), /* pcrel_offset */
1288 /* Like DTPREL16, but no overflow. */
1289 HOWTO (R_PPC64_DTPREL16_LO,
1291 1, /* size (0 = byte, 1 = short, 2 = long) */
1293 FALSE, /* pc_relative */
1295 complain_overflow_dont, /* complain_on_overflow */
1296 ppc64_elf_unhandled_reloc, /* special_function */
1297 "R_PPC64_DTPREL16_LO", /* name */
1298 FALSE, /* partial_inplace */
1300 0xffff, /* dst_mask */
1301 FALSE), /* pcrel_offset */
1303 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1304 HOWTO (R_PPC64_DTPREL16_HI,
1305 16, /* rightshift */
1306 1, /* size (0 = byte, 1 = short, 2 = long) */
1308 FALSE, /* pc_relative */
1310 complain_overflow_dont, /* complain_on_overflow */
1311 ppc64_elf_unhandled_reloc, /* special_function */
1312 "R_PPC64_DTPREL16_HI", /* name */
1313 FALSE, /* partial_inplace */
1315 0xffff, /* dst_mask */
1316 FALSE), /* pcrel_offset */
1318 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1319 HOWTO (R_PPC64_DTPREL16_HA,
1320 16, /* rightshift */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1323 FALSE, /* pc_relative */
1325 complain_overflow_dont, /* complain_on_overflow */
1326 ppc64_elf_unhandled_reloc, /* special_function */
1327 "R_PPC64_DTPREL16_HA", /* name */
1328 FALSE, /* partial_inplace */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1333 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1334 HOWTO (R_PPC64_DTPREL16_HIGHER,
1335 32, /* rightshift */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 FALSE, /* pc_relative */
1340 complain_overflow_dont, /* complain_on_overflow */
1341 ppc64_elf_unhandled_reloc, /* special_function */
1342 "R_PPC64_DTPREL16_HIGHER", /* name */
1343 FALSE, /* partial_inplace */
1345 0xffff, /* dst_mask */
1346 FALSE), /* pcrel_offset */
1348 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1349 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1350 32, /* rightshift */
1351 1, /* size (0 = byte, 1 = short, 2 = long) */
1353 FALSE, /* pc_relative */
1355 complain_overflow_dont, /* complain_on_overflow */
1356 ppc64_elf_unhandled_reloc, /* special_function */
1357 "R_PPC64_DTPREL16_HIGHERA", /* name */
1358 FALSE, /* partial_inplace */
1360 0xffff, /* dst_mask */
1361 FALSE), /* pcrel_offset */
1363 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1364 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1365 48, /* rightshift */
1366 1, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE, /* pc_relative */
1370 complain_overflow_dont, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc, /* special_function */
1372 "R_PPC64_DTPREL16_HIGHEST", /* name */
1373 FALSE, /* partial_inplace */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1378 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1379 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1380 48, /* rightshift */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE, /* pc_relative */
1385 complain_overflow_dont, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc, /* special_function */
1387 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1388 FALSE, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1393 /* Like DTPREL16, but for insns with a DS field. */
1394 HOWTO (R_PPC64_DTPREL16_DS,
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 FALSE, /* pc_relative */
1400 complain_overflow_signed, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc, /* special_function */
1402 "R_PPC64_DTPREL16_DS", /* name */
1403 FALSE, /* partial_inplace */
1405 0xfffc, /* dst_mask */
1406 FALSE), /* pcrel_offset */
1408 /* Like DTPREL16_DS, but no overflow. */
1409 HOWTO (R_PPC64_DTPREL16_LO_DS,
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 FALSE, /* pc_relative */
1415 complain_overflow_dont, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc, /* special_function */
1417 "R_PPC64_DTPREL16_LO_DS", /* name */
1418 FALSE, /* partial_inplace */
1420 0xfffc, /* dst_mask */
1421 FALSE), /* pcrel_offset */
1423 /* Computes a tp-relative displacement, the difference between the value of
1424 sym+add and the value of the thread pointer (r13). */
1425 HOWTO (R_PPC64_TPREL64,
1427 4, /* size (0 = byte, 1 = short, 2 = long) */
1429 FALSE, /* pc_relative */
1431 complain_overflow_dont, /* complain_on_overflow */
1432 ppc64_elf_unhandled_reloc, /* special_function */
1433 "R_PPC64_TPREL64", /* name */
1434 FALSE, /* partial_inplace */
1436 ONES (64), /* dst_mask */
1437 FALSE), /* pcrel_offset */
1439 /* A 16 bit tprel reloc. */
1440 HOWTO (R_PPC64_TPREL16,
1442 1, /* size (0 = byte, 1 = short, 2 = long) */
1444 FALSE, /* pc_relative */
1446 complain_overflow_signed, /* complain_on_overflow */
1447 ppc64_elf_unhandled_reloc, /* special_function */
1448 "R_PPC64_TPREL16", /* name */
1449 FALSE, /* partial_inplace */
1451 0xffff, /* dst_mask */
1452 FALSE), /* pcrel_offset */
1454 /* Like TPREL16, but no overflow. */
1455 HOWTO (R_PPC64_TPREL16_LO,
1457 1, /* size (0 = byte, 1 = short, 2 = long) */
1459 FALSE, /* pc_relative */
1461 complain_overflow_dont, /* complain_on_overflow */
1462 ppc64_elf_unhandled_reloc, /* special_function */
1463 "R_PPC64_TPREL16_LO", /* name */
1464 FALSE, /* partial_inplace */
1466 0xffff, /* dst_mask */
1467 FALSE), /* pcrel_offset */
1469 /* Like TPREL16_LO, but next higher group of 16 bits. */
1470 HOWTO (R_PPC64_TPREL16_HI,
1471 16, /* rightshift */
1472 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 FALSE, /* pc_relative */
1476 complain_overflow_dont, /* complain_on_overflow */
1477 ppc64_elf_unhandled_reloc, /* special_function */
1478 "R_PPC64_TPREL16_HI", /* name */
1479 FALSE, /* partial_inplace */
1481 0xffff, /* dst_mask */
1482 FALSE), /* pcrel_offset */
1484 /* Like TPREL16_HI, but adjust for low 16 bits. */
1485 HOWTO (R_PPC64_TPREL16_HA,
1486 16, /* rightshift */
1487 1, /* size (0 = byte, 1 = short, 2 = long) */
1489 FALSE, /* pc_relative */
1491 complain_overflow_dont, /* complain_on_overflow */
1492 ppc64_elf_unhandled_reloc, /* special_function */
1493 "R_PPC64_TPREL16_HA", /* name */
1494 FALSE, /* partial_inplace */
1496 0xffff, /* dst_mask */
1497 FALSE), /* pcrel_offset */
1499 /* Like TPREL16_HI, but next higher group of 16 bits. */
1500 HOWTO (R_PPC64_TPREL16_HIGHER,
1501 32, /* rightshift */
1502 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE, /* pc_relative */
1506 complain_overflow_dont, /* complain_on_overflow */
1507 ppc64_elf_unhandled_reloc, /* special_function */
1508 "R_PPC64_TPREL16_HIGHER", /* name */
1509 FALSE, /* partial_inplace */
1511 0xffff, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1514 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1515 HOWTO (R_PPC64_TPREL16_HIGHERA,
1516 32, /* rightshift */
1517 1, /* size (0 = byte, 1 = short, 2 = long) */
1519 FALSE, /* pc_relative */
1521 complain_overflow_dont, /* complain_on_overflow */
1522 ppc64_elf_unhandled_reloc, /* special_function */
1523 "R_PPC64_TPREL16_HIGHERA", /* name */
1524 FALSE, /* partial_inplace */
1526 0xffff, /* dst_mask */
1527 FALSE), /* pcrel_offset */
1529 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1530 HOWTO (R_PPC64_TPREL16_HIGHEST,
1531 48, /* rightshift */
1532 1, /* size (0 = byte, 1 = short, 2 = long) */
1534 FALSE, /* pc_relative */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc, /* special_function */
1538 "R_PPC64_TPREL16_HIGHEST", /* name */
1539 FALSE, /* partial_inplace */
1541 0xffff, /* dst_mask */
1542 FALSE), /* pcrel_offset */
1544 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1545 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1546 48, /* rightshift */
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE, /* pc_relative */
1551 complain_overflow_dont, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc, /* special_function */
1553 "R_PPC64_TPREL16_HIGHESTA", /* name */
1554 FALSE, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1559 /* Like TPREL16, but for insns with a DS field. */
1560 HOWTO (R_PPC64_TPREL16_DS,
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE, /* pc_relative */
1566 complain_overflow_signed, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc, /* special_function */
1568 "R_PPC64_TPREL16_DS", /* name */
1569 FALSE, /* partial_inplace */
1571 0xfffc, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1574 /* Like TPREL16_DS, but no overflow. */
1575 HOWTO (R_PPC64_TPREL16_LO_DS,
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE, /* pc_relative */
1581 complain_overflow_dont, /* complain_on_overflow */
1582 ppc64_elf_unhandled_reloc, /* special_function */
1583 "R_PPC64_TPREL16_LO_DS", /* name */
1584 FALSE, /* partial_inplace */
1586 0xfffc, /* dst_mask */
1587 FALSE), /* pcrel_offset */
1589 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1590 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1591 to the first entry relative to the TOC base (r2). */
1592 HOWTO (R_PPC64_GOT_TLSGD16,
1594 1, /* size (0 = byte, 1 = short, 2 = long) */
1596 FALSE, /* pc_relative */
1598 complain_overflow_signed, /* complain_on_overflow */
1599 ppc64_elf_unhandled_reloc, /* special_function */
1600 "R_PPC64_GOT_TLSGD16", /* name */
1601 FALSE, /* partial_inplace */
1603 0xffff, /* dst_mask */
1604 FALSE), /* pcrel_offset */
1606 /* Like GOT_TLSGD16, but no overflow. */
1607 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1609 1, /* size (0 = byte, 1 = short, 2 = long) */
1611 FALSE, /* pc_relative */
1613 complain_overflow_dont, /* complain_on_overflow */
1614 ppc64_elf_unhandled_reloc, /* special_function */
1615 "R_PPC64_GOT_TLSGD16_LO", /* name */
1616 FALSE, /* partial_inplace */
1618 0xffff, /* dst_mask */
1619 FALSE), /* pcrel_offset */
1621 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1622 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1623 16, /* rightshift */
1624 1, /* size (0 = byte, 1 = short, 2 = long) */
1626 FALSE, /* pc_relative */
1628 complain_overflow_dont, /* complain_on_overflow */
1629 ppc64_elf_unhandled_reloc, /* special_function */
1630 "R_PPC64_GOT_TLSGD16_HI", /* name */
1631 FALSE, /* partial_inplace */
1633 0xffff, /* dst_mask */
1634 FALSE), /* pcrel_offset */
1636 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1637 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1638 16, /* rightshift */
1639 1, /* size (0 = byte, 1 = short, 2 = long) */
1641 FALSE, /* pc_relative */
1643 complain_overflow_dont, /* complain_on_overflow */
1644 ppc64_elf_unhandled_reloc, /* special_function */
1645 "R_PPC64_GOT_TLSGD16_HA", /* name */
1646 FALSE, /* partial_inplace */
1648 0xffff, /* dst_mask */
1649 FALSE), /* pcrel_offset */
1651 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1652 with values (sym+add)@dtpmod and zero, and computes the offset to the
1653 first entry relative to the TOC base (r2). */
1654 HOWTO (R_PPC64_GOT_TLSLD16,
1656 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 FALSE, /* pc_relative */
1660 complain_overflow_signed, /* complain_on_overflow */
1661 ppc64_elf_unhandled_reloc, /* special_function */
1662 "R_PPC64_GOT_TLSLD16", /* name */
1663 FALSE, /* partial_inplace */
1665 0xffff, /* dst_mask */
1666 FALSE), /* pcrel_offset */
1668 /* Like GOT_TLSLD16, but no overflow. */
1669 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1671 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 FALSE, /* pc_relative */
1675 complain_overflow_dont, /* complain_on_overflow */
1676 ppc64_elf_unhandled_reloc, /* special_function */
1677 "R_PPC64_GOT_TLSLD16_LO", /* name */
1678 FALSE, /* partial_inplace */
1680 0xffff, /* dst_mask */
1681 FALSE), /* pcrel_offset */
1683 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1684 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1685 16, /* rightshift */
1686 1, /* size (0 = byte, 1 = short, 2 = long) */
1688 FALSE, /* pc_relative */
1690 complain_overflow_dont, /* complain_on_overflow */
1691 ppc64_elf_unhandled_reloc, /* special_function */
1692 "R_PPC64_GOT_TLSLD16_HI", /* name */
1693 FALSE, /* partial_inplace */
1695 0xffff, /* dst_mask */
1696 FALSE), /* pcrel_offset */
1698 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1699 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1700 16, /* rightshift */
1701 1, /* size (0 = byte, 1 = short, 2 = long) */
1703 FALSE, /* pc_relative */
1705 complain_overflow_dont, /* complain_on_overflow */
1706 ppc64_elf_unhandled_reloc, /* special_function */
1707 "R_PPC64_GOT_TLSLD16_HA", /* name */
1708 FALSE, /* partial_inplace */
1710 0xffff, /* dst_mask */
1711 FALSE), /* pcrel_offset */
1713 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1714 the offset to the entry relative to the TOC base (r2). */
1715 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1717 1, /* size (0 = byte, 1 = short, 2 = long) */
1719 FALSE, /* pc_relative */
1721 complain_overflow_signed, /* complain_on_overflow */
1722 ppc64_elf_unhandled_reloc, /* special_function */
1723 "R_PPC64_GOT_DTPREL16_DS", /* name */
1724 FALSE, /* partial_inplace */
1726 0xfffc, /* dst_mask */
1727 FALSE), /* pcrel_offset */
1729 /* Like GOT_DTPREL16_DS, but no overflow. */
1730 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1732 1, /* size (0 = byte, 1 = short, 2 = long) */
1734 FALSE, /* pc_relative */
1736 complain_overflow_dont, /* complain_on_overflow */
1737 ppc64_elf_unhandled_reloc, /* special_function */
1738 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1739 FALSE, /* partial_inplace */
1741 0xfffc, /* dst_mask */
1742 FALSE), /* pcrel_offset */
1744 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1745 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1746 16, /* rightshift */
1747 1, /* size (0 = byte, 1 = short, 2 = long) */
1749 FALSE, /* pc_relative */
1751 complain_overflow_dont, /* complain_on_overflow */
1752 ppc64_elf_unhandled_reloc, /* special_function */
1753 "R_PPC64_GOT_DTPREL16_HI", /* name */
1754 FALSE, /* partial_inplace */
1756 0xffff, /* dst_mask */
1757 FALSE), /* pcrel_offset */
1759 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1760 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1761 16, /* rightshift */
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1764 FALSE, /* pc_relative */
1766 complain_overflow_dont, /* complain_on_overflow */
1767 ppc64_elf_unhandled_reloc, /* special_function */
1768 "R_PPC64_GOT_DTPREL16_HA", /* name */
1769 FALSE, /* partial_inplace */
1771 0xffff, /* dst_mask */
1772 FALSE), /* pcrel_offset */
1774 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1775 offset to the entry relative to the TOC base (r2). */
1776 HOWTO (R_PPC64_GOT_TPREL16_DS,
1778 1, /* size (0 = byte, 1 = short, 2 = long) */
1780 FALSE, /* pc_relative */
1782 complain_overflow_signed, /* complain_on_overflow */
1783 ppc64_elf_unhandled_reloc, /* special_function */
1784 "R_PPC64_GOT_TPREL16_DS", /* name */
1785 FALSE, /* partial_inplace */
1787 0xfffc, /* dst_mask */
1788 FALSE), /* pcrel_offset */
1790 /* Like GOT_TPREL16_DS, but no overflow. */
1791 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1793 1, /* size (0 = byte, 1 = short, 2 = long) */
1795 FALSE, /* pc_relative */
1797 complain_overflow_dont, /* complain_on_overflow */
1798 ppc64_elf_unhandled_reloc, /* special_function */
1799 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1800 FALSE, /* partial_inplace */
1802 0xfffc, /* dst_mask */
1803 FALSE), /* pcrel_offset */
1805 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1806 HOWTO (R_PPC64_GOT_TPREL16_HI,
1807 16, /* rightshift */
1808 1, /* size (0 = byte, 1 = short, 2 = long) */
1810 FALSE, /* pc_relative */
1812 complain_overflow_dont, /* complain_on_overflow */
1813 ppc64_elf_unhandled_reloc, /* special_function */
1814 "R_PPC64_GOT_TPREL16_HI", /* name */
1815 FALSE, /* partial_inplace */
1817 0xffff, /* dst_mask */
1818 FALSE), /* pcrel_offset */
1820 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1821 HOWTO (R_PPC64_GOT_TPREL16_HA,
1822 16, /* rightshift */
1823 1, /* size (0 = byte, 1 = short, 2 = long) */
1825 FALSE, /* pc_relative */
1827 complain_overflow_dont, /* complain_on_overflow */
1828 ppc64_elf_unhandled_reloc, /* special_function */
1829 "R_PPC64_GOT_TPREL16_HA", /* name */
1830 FALSE, /* partial_inplace */
1832 0xffff, /* dst_mask */
1833 FALSE), /* pcrel_offset */
1835 /* GNU extension to record C++ vtable hierarchy. */
1836 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1838 0, /* size (0 = byte, 1 = short, 2 = long) */
1840 FALSE, /* pc_relative */
1842 complain_overflow_dont, /* complain_on_overflow */
1843 NULL, /* special_function */
1844 "R_PPC64_GNU_VTINHERIT", /* name */
1845 FALSE, /* partial_inplace */
1848 FALSE), /* pcrel_offset */
1850 /* GNU extension to record C++ vtable member usage. */
1851 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1853 0, /* size (0 = byte, 1 = short, 2 = long) */
1855 FALSE, /* pc_relative */
1857 complain_overflow_dont, /* complain_on_overflow */
1858 NULL, /* special_function */
1859 "R_PPC64_GNU_VTENTRY", /* name */
1860 FALSE, /* partial_inplace */
1863 FALSE), /* pcrel_offset */
1867 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1871 ppc_howto_init (void)
1873 unsigned int i, type;
1876 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1879 type = ppc64_elf_howto_raw[i].type;
1880 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1881 / sizeof (ppc64_elf_howto_table[0])));
1882 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1886 static reloc_howto_type *
1887 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1888 bfd_reloc_code_real_type code)
1890 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1892 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1893 /* Initialize howto table if needed. */
1901 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1903 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1905 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1907 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1909 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1911 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1913 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1915 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1917 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1919 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1921 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1923 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1925 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1927 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1929 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1931 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1933 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1935 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1937 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1939 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1941 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1943 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1945 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1947 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1949 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1951 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1953 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1955 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1957 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1959 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1961 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1963 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1965 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1967 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1969 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1971 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1973 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1975 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1977 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1979 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1981 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1983 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1985 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1987 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1989 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1991 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1993 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1995 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1997 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1999 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2001 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2003 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2005 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2007 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2009 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2011 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2013 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2015 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2017 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2019 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2021 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2023 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2025 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2027 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2029 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2031 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2033 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2035 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2037 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2039 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2041 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2043 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2045 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2047 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2049 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2051 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2053 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2055 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2057 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2059 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2061 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2063 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2065 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2067 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2069 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2071 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2073 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2075 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2077 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2079 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2081 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2083 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2085 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2087 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2089 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2091 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2093 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2095 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2097 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2099 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2101 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2105 return ppc64_elf_howto_table[r];
2108 /* Set the howto pointer for a PowerPC ELF reloc. */
2111 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2112 Elf_Internal_Rela *dst)
2116 /* Initialize howto table if needed. */
2117 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2120 type = ELF64_R_TYPE (dst->r_info);
2121 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2122 / sizeof (ppc64_elf_howto_table[0])));
2123 cache_ptr->howto = ppc64_elf_howto_table[type];
2126 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2128 static bfd_reloc_status_type
2129 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2130 void *data, asection *input_section,
2131 bfd *output_bfd, char **error_message)
2133 /* If this is a relocatable link (output_bfd test tells us), just
2134 call the generic function. Any adjustment will be done at final
2136 if (output_bfd != NULL)
2137 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2138 input_section, output_bfd, error_message);
2140 /* Adjust the addend for sign extension of the low 16 bits.
2141 We won't actually be using the low 16 bits, so trashing them
2143 reloc_entry->addend += 0x8000;
2144 return bfd_reloc_continue;
2147 static bfd_reloc_status_type
2148 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2149 void *data, asection *input_section,
2150 bfd *output_bfd, char **error_message)
2152 if (output_bfd != NULL)
2153 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2154 input_section, output_bfd, error_message);
2156 if (strcmp (symbol->section->name, ".opd") == 0
2157 && (symbol->section->owner->flags & DYNAMIC) == 0)
2159 bfd_vma dest = opd_entry_value (symbol->section,
2160 symbol->value + reloc_entry->addend,
2162 if (dest != (bfd_vma) -1)
2163 reloc_entry->addend = dest - (symbol->value
2164 + symbol->section->output_section->vma
2165 + symbol->section->output_offset);
2167 return bfd_reloc_continue;
2170 static bfd_reloc_status_type
2171 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2172 void *data, asection *input_section,
2173 bfd *output_bfd, char **error_message)
2176 enum elf_ppc64_reloc_type r_type;
2177 bfd_size_type octets;
2178 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2179 bfd_boolean is_power4 = FALSE;
2181 /* If this is a relocatable link (output_bfd test tells us), just
2182 call the generic function. Any adjustment will be done at final
2184 if (output_bfd != NULL)
2185 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2186 input_section, output_bfd, error_message);
2188 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2189 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2190 insn &= ~(0x01 << 21);
2191 r_type = reloc_entry->howto->type;
2192 if (r_type == R_PPC64_ADDR14_BRTAKEN
2193 || r_type == R_PPC64_REL14_BRTAKEN)
2194 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2198 /* Set 'a' bit. This is 0b00010 in BO field for branch
2199 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2200 for branch on CTR insns (BO == 1a00t or 1a01t). */
2201 if ((insn & (0x14 << 21)) == (0x04 << 21))
2203 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2213 if (!bfd_is_com_section (symbol->section))
2214 target = symbol->value;
2215 target += symbol->section->output_section->vma;
2216 target += symbol->section->output_offset;
2217 target += reloc_entry->addend;
2219 from = (reloc_entry->address
2220 + input_section->output_offset
2221 + input_section->output_section->vma);
2223 /* Invert 'y' bit if not the default. */
2224 if ((bfd_signed_vma) (target - from) < 0)
2227 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2229 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2230 input_section, output_bfd, error_message);
2233 static bfd_reloc_status_type
2234 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2235 void *data, asection *input_section,
2236 bfd *output_bfd, char **error_message)
2238 /* If this is a relocatable link (output_bfd test tells us), just
2239 call the generic function. Any adjustment will be done at final
2241 if (output_bfd != NULL)
2242 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2243 input_section, output_bfd, error_message);
2245 /* Subtract the symbol section base address. */
2246 reloc_entry->addend -= symbol->section->output_section->vma;
2247 return bfd_reloc_continue;
2250 static bfd_reloc_status_type
2251 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2252 void *data, asection *input_section,
2253 bfd *output_bfd, char **error_message)
2255 /* If this is a relocatable link (output_bfd test tells us), just
2256 call the generic function. Any adjustment will be done at final
2258 if (output_bfd != NULL)
2259 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2260 input_section, output_bfd, error_message);
2262 /* Subtract the symbol section base address. */
2263 reloc_entry->addend -= symbol->section->output_section->vma;
2265 /* Adjust the addend for sign extension of the low 16 bits. */
2266 reloc_entry->addend += 0x8000;
2267 return bfd_reloc_continue;
2270 static bfd_reloc_status_type
2271 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2272 void *data, asection *input_section,
2273 bfd *output_bfd, char **error_message)
2277 /* If this is a relocatable link (output_bfd test tells us), just
2278 call the generic function. Any adjustment will be done at final
2280 if (output_bfd != NULL)
2281 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2282 input_section, output_bfd, error_message);
2284 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2286 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2288 /* Subtract the TOC base address. */
2289 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2290 return bfd_reloc_continue;
2293 static bfd_reloc_status_type
2294 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2295 void *data, asection *input_section,
2296 bfd *output_bfd, char **error_message)
2300 /* If this is a relocatable link (output_bfd test tells us), just
2301 call the generic function. Any adjustment will be done at final
2303 if (output_bfd != NULL)
2304 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2305 input_section, output_bfd, error_message);
2307 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2309 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2311 /* Subtract the TOC base address. */
2312 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2314 /* Adjust the addend for sign extension of the low 16 bits. */
2315 reloc_entry->addend += 0x8000;
2316 return bfd_reloc_continue;
2319 static bfd_reloc_status_type
2320 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2321 void *data, asection *input_section,
2322 bfd *output_bfd, char **error_message)
2325 bfd_size_type octets;
2327 /* If this is a relocatable link (output_bfd test tells us), just
2328 call the generic function. Any adjustment will be done at final
2330 if (output_bfd != NULL)
2331 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2332 input_section, output_bfd, error_message);
2334 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2336 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2338 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2339 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2340 return bfd_reloc_ok;
2343 static bfd_reloc_status_type
2344 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2345 void *data, asection *input_section,
2346 bfd *output_bfd, char **error_message)
2348 /* If this is a relocatable link (output_bfd test tells us), just
2349 call the generic function. Any adjustment will be done at final
2351 if (output_bfd != NULL)
2352 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2353 input_section, output_bfd, error_message);
2355 if (error_message != NULL)
2357 static char buf[60];
2358 sprintf (buf, "generic linker can't handle %s",
2359 reloc_entry->howto->name);
2360 *error_message = buf;
2362 return bfd_reloc_dangerous;
2365 struct ppc64_elf_obj_tdata
2367 struct elf_obj_tdata elf;
2369 /* Shortcuts to dynamic linker sections. */
2373 /* Used during garbage collection. We attach global symbols defined
2374 on removed .opd entries to this section so that the sym is removed. */
2375 asection *deleted_section;
2377 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2378 sections means we potentially need one of these for each input bfd. */
2380 bfd_signed_vma refcount;
2385 #define ppc64_elf_tdata(bfd) \
2386 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2388 #define ppc64_tlsld_got(bfd) \
2389 (&ppc64_elf_tdata (bfd)->tlsld_got)
2391 /* Override the generic function because we store some extras. */
2394 ppc64_elf_mkobject (bfd *abfd)
2396 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2397 abfd->tdata.any = bfd_zalloc (abfd, amt);
2398 if (abfd->tdata.any == NULL)
2403 /* Fix bad default arch selected for a 64 bit input bfd when the
2404 default is 32 bit. */
2407 ppc64_elf_object_p (bfd *abfd)
2409 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2411 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2413 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2415 /* Relies on arch after 32 bit default being 64 bit default. */
2416 abfd->arch_info = abfd->arch_info->next;
2417 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2423 /* Support for core dump NOTE sections. */
2426 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2428 size_t offset, size;
2430 if (note->descsz != 504)
2434 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2437 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2443 /* Make a ".reg/999" section. */
2444 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2445 size, note->descpos + offset);
2449 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2451 if (note->descsz != 136)
2454 elf_tdata (abfd)->core_program
2455 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2456 elf_tdata (abfd)->core_command
2457 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2462 /* Merge backend specific data from an object file to the output
2463 object file when linking. */
2466 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2468 /* Check if we have the same endianess. */
2469 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2470 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2471 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2475 if (bfd_big_endian (ibfd))
2476 msg = _("%B: compiled for a big endian system "
2477 "and target is little endian");
2479 msg = _("%B: compiled for a little endian system "
2480 "and target is big endian");
2482 (*_bfd_error_handler) (msg, ibfd);
2484 bfd_set_error (bfd_error_wrong_format);
2491 /* Add extra PPC sections. */
2493 static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2495 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2496 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2497 { ".plt", 4, 0, SHT_NOBITS, 0 },
2498 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2499 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2500 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2501 { NULL, 0, 0, 0, 0 }
2504 struct _ppc64_elf_section_data
2506 struct bfd_elf_section_data elf;
2508 /* An array with one entry for each opd function descriptor. */
2511 /* Points to the function code section for local opd entries. */
2512 asection **func_sec;
2513 /* After editing .opd, adjust references to opd local syms. */
2517 /* An array for toc sections, indexed by offset/8.
2518 Specifies the relocation symbol index used at a given toc offset. */
2522 #define ppc64_elf_section_data(sec) \
2523 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2526 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2528 struct _ppc64_elf_section_data *sdata;
2529 bfd_size_type amt = sizeof (*sdata);
2531 sdata = bfd_zalloc (abfd, amt);
2534 sec->used_by_bfd = sdata;
2536 return _bfd_elf_new_section_hook (abfd, sec);
2540 get_opd_info (asection * sec)
2543 && ppc64_elf_section_data (sec) != NULL
2544 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2545 return ppc64_elf_section_data (sec)->opd.adjust;
2549 /* Parameters for the qsort hook. */
2550 static asection *synthetic_opd;
2551 static bfd_boolean synthetic_relocatable;
2553 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2556 compare_symbols (const void *ap, const void *bp)
2558 const asymbol *a = * (const asymbol **) ap;
2559 const asymbol *b = * (const asymbol **) bp;
2561 /* Section symbols first. */
2562 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2564 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2567 /* then .opd symbols. */
2568 if (a->section == synthetic_opd && b->section != synthetic_opd)
2570 if (a->section != synthetic_opd && b->section == synthetic_opd)
2573 /* then other code symbols. */
2574 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2575 == (SEC_CODE | SEC_ALLOC)
2576 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2577 != (SEC_CODE | SEC_ALLOC))
2580 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2581 != (SEC_CODE | SEC_ALLOC)
2582 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2583 == (SEC_CODE | SEC_ALLOC))
2586 if (synthetic_relocatable)
2588 if (a->section->id < b->section->id)
2591 if (a->section->id > b->section->id)
2595 if (a->value + a->section->vma < b->value + b->section->vma)
2598 if (a->value + a->section->vma > b->value + b->section->vma)
2604 /* Search SYMS for a symbol of the given VALUE. */
2607 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2615 mid = (lo + hi) >> 1;
2616 if (syms[mid]->value + syms[mid]->section->vma < value)
2618 else if (syms[mid]->value + syms[mid]->section->vma > value)
2628 mid = (lo + hi) >> 1;
2629 if (syms[mid]->section->id < id)
2631 else if (syms[mid]->section->id > id)
2633 else if (syms[mid]->value < value)
2635 else if (syms[mid]->value > value)
2644 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2648 ppc64_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
2649 long dynsymcount, asymbol **dynsyms,
2656 long codesecsym, codesecsymend, secsymend, opdsymend;
2658 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2659 asymbol **sy = NULL;
2663 opd = bfd_get_section_by_name (abfd, ".opd");
2669 if (symcount != 0 && dynsymcount != 0)
2671 /* Use both symbol tables. */
2672 sy = bfd_malloc ((symcount + dynsymcount + 1) * sizeof (*syms));
2675 memcpy (sy, syms, symcount * sizeof (*syms));
2676 memcpy (sy + symcount, dynsyms, (dynsymcount + 1) * sizeof (*syms));
2678 symcount = symcount + dynsymcount;
2680 else if (symcount == 0)
2683 symcount = dynsymcount;
2690 synthetic_opd = opd;
2691 synthetic_relocatable = relocatable;
2692 qsort (syms, symcount, sizeof (asymbol *), compare_symbols);
2694 if (!relocatable && symcount > 1)
2697 /* Trim duplicate syms, since we may have merged the normal and
2698 dynamic symbols. Actually, we only care about syms that have
2699 different values, so trim any with the same value. */
2700 for (i = 1, j = 1; i < symcount; ++i)
2701 if (syms[i - 1]->value + syms[i - 1]->section->vma
2702 != syms[i]->value + syms[i]->section->vma)
2703 syms[j++] = syms[i];
2708 if (syms[i]->section == opd)
2712 for (; i < symcount; ++i)
2713 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2714 != (SEC_CODE | SEC_ALLOC))
2715 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2719 for (; i < symcount; ++i)
2720 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2724 for (; i < symcount; ++i)
2725 if (syms[i]->section != opd)
2729 for (; i < symcount; ++i)
2730 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2731 != (SEC_CODE | SEC_ALLOC))
2736 if (opdsymend == secsymend)
2741 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2747 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2749 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2752 || ! (*slurp_relocs) (abfd, relopd, syms, FALSE))
2756 for (i = secsymend, r = relopd->relocation; i < opdsymend; ++i)
2760 while (r < relopd->relocation + relcount
2761 && r->address < syms[i]->value + opd->vma)
2764 if (r == relopd->relocation + relcount)
2767 if (r->address != syms[i]->value + opd->vma)
2770 if (r->howto->type != R_PPC64_ADDR64)
2773 sym = *r->sym_ptr_ptr;
2774 if (!sym_exists_at (syms, opdsymend, symcount,
2775 sym->section->id, sym->value + r->addend))
2778 size += sizeof (asymbol);
2779 size += strlen (syms[i]->name) + 2;
2783 s = *ret = bfd_malloc (size);
2790 names = (char *) (s + count);
2792 for (i = secsymend, r = relopd->relocation; i < opdsymend; ++i)
2796 while (r < relopd->relocation + relcount
2797 && r->address < syms[i]->value + opd->vma)
2800 if (r == relopd->relocation + relcount)
2803 if (r->address != syms[i]->value + opd->vma)
2806 if (r->howto->type != R_PPC64_ADDR64)
2809 sym = *r->sym_ptr_ptr;
2810 if (!sym_exists_at (syms, opdsymend, symcount,
2811 sym->section->id, sym->value + r->addend))
2816 s->section = sym->section;
2817 s->value = sym->value + r->addend;
2820 len = strlen (syms[i]->name);
2821 memcpy (names, syms[i]->name, len + 1);
2832 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2836 free_contents_and_exit:
2843 for (i = secsymend; i < opdsymend; ++i)
2847 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2848 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2851 size += sizeof (asymbol);
2852 size += strlen (syms[i]->name) + 2;
2856 s = *ret = bfd_malloc (size);
2860 goto free_contents_and_exit;
2863 names = (char *) (s + count);
2865 for (i = secsymend; i < opdsymend; ++i)
2869 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2870 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2874 asection *sec = abfd->sections;
2881 long mid = (lo + hi) >> 1;
2882 if (syms[mid]->section->vma < ent)
2884 else if (syms[mid]->section->vma > ent)
2888 sec = syms[mid]->section;
2893 if (lo >= hi && lo > codesecsym)
2894 sec = syms[lo - 1]->section;
2896 for (; sec != NULL; sec = sec->next)
2900 if ((sec->flags & SEC_ALLOC) == 0
2901 || (sec->flags & SEC_LOAD) == 0)
2903 if ((sec->flags & SEC_CODE) != 0)
2906 s->value = ent - s->section->vma;
2909 len = strlen (syms[i]->name);
2910 memcpy (names, syms[i]->name, len + 1);
2924 /* The following functions are specific to the ELF linker, while
2925 functions above are used generally. Those named ppc64_elf_* are
2926 called by the main ELF linker code. They appear in this file more
2927 or less in the order in which they are called. eg.
2928 ppc64_elf_check_relocs is called early in the link process,
2929 ppc64_elf_finish_dynamic_sections is one of the last functions
2932 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2933 functions have both a function code symbol and a function descriptor
2934 symbol. A call to foo in a relocatable object file looks like:
2941 The function definition in another object file might be:
2945 . .quad .TOC.@tocbase
2951 When the linker resolves the call during a static link, the branch
2952 unsurprisingly just goes to .foo and the .opd information is unused.
2953 If the function definition is in a shared library, things are a little
2954 different: The call goes via a plt call stub, the opd information gets
2955 copied to the plt, and the linker patches the nop.
2963 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2964 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2965 . std 2,40(1) # this is the general idea
2973 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2975 The "reloc ()" notation is supposed to indicate that the linker emits
2976 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2979 What are the difficulties here? Well, firstly, the relocations
2980 examined by the linker in check_relocs are against the function code
2981 sym .foo, while the dynamic relocation in the plt is emitted against
2982 the function descriptor symbol, foo. Somewhere along the line, we need
2983 to carefully copy dynamic link information from one symbol to the other.
2984 Secondly, the generic part of the elf linker will make .foo a dynamic
2985 symbol as is normal for most other backends. We need foo dynamic
2986 instead, at least for an application final link. However, when
2987 creating a shared library containing foo, we need to have both symbols
2988 dynamic so that references to .foo are satisfied during the early
2989 stages of linking. Otherwise the linker might decide to pull in a
2990 definition from some other object, eg. a static library.
2992 Update: As of August 2004, we support a new convention. Function
2993 calls may use the function descriptor symbol, ie. "bl foo". This
2994 behaves exactly as "bl .foo". */
2996 /* The linker needs to keep track of the number of relocs that it
2997 decides to copy as dynamic relocs in check_relocs for each symbol.
2998 This is so that it can later discard them if they are found to be
2999 unnecessary. We store the information in a field extending the
3000 regular ELF linker hash table. */
3002 struct ppc_dyn_relocs
3004 struct ppc_dyn_relocs *next;
3006 /* The input section of the reloc. */
3009 /* Total number of relocs copied for the input section. */
3010 bfd_size_type count;
3012 /* Number of pc-relative relocs copied for the input section. */
3013 bfd_size_type pc_count;
3016 /* Track GOT entries needed for a given symbol. We might need more
3017 than one got entry per symbol. */
3020 struct got_entry *next;
3022 /* The symbol addend that we'll be placing in the GOT. */
3025 /* Unlike other ELF targets, we use separate GOT entries for the same
3026 symbol referenced from different input files. This is to support
3027 automatic multiple TOC/GOT sections, where the TOC base can vary
3028 from one input file to another.
3030 Point to the BFD owning this GOT entry. */
3033 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3034 TLS_TPREL or TLS_DTPREL for tls entries. */
3037 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3040 bfd_signed_vma refcount;
3045 /* The same for PLT. */
3048 struct plt_entry *next;
3054 bfd_signed_vma refcount;
3059 /* Of those relocs that might be copied as dynamic relocs, this macro
3060 selects those that must be copied when linking a shared library,
3061 even when the symbol is local. */
3063 #define MUST_BE_DYN_RELOC(RTYPE) \
3064 ((RTYPE) != R_PPC64_REL32 \
3065 && (RTYPE) != R_PPC64_REL64 \
3066 && (RTYPE) != R_PPC64_REL30)
3068 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3069 copying dynamic variables from a shared lib into an app's dynbss
3070 section, and instead use a dynamic relocation to point into the
3071 shared lib. With code that gcc generates, it's vital that this be
3072 enabled; In the PowerPC64 ABI, the address of a function is actually
3073 the address of a function descriptor, which resides in the .opd
3074 section. gcc uses the descriptor directly rather than going via the
3075 GOT as some other ABI's do, which means that initialized function
3076 pointers must reference the descriptor. Thus, a function pointer
3077 initialized to the address of a function in a shared library will
3078 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3079 redefines the function descriptor symbol to point to the copy. This
3080 presents a problem as a plt entry for that function is also
3081 initialized from the function descriptor symbol and the copy reloc
3082 may not be initialized first. */
3083 #define ELIMINATE_COPY_RELOCS 1
3085 /* Section name for stubs is the associated section name plus this
3087 #define STUB_SUFFIX ".stub"
3090 ppc_stub_long_branch:
3091 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3092 destination, but a 24 bit branch in a stub section will reach.
3095 ppc_stub_plt_branch:
3096 Similar to the above, but a 24 bit branch in the stub section won't
3097 reach its destination.
3098 . addis %r12,%r2,xxx@toc@ha
3099 . ld %r11,xxx@toc@l(%r12)
3104 Used to call a function in a shared library. If it so happens that
3105 the plt entry referenced crosses a 64k boundary, then an extra
3106 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3107 xxx+16 as appropriate.
3108 . addis %r12,%r2,xxx@toc@ha
3110 . ld %r11,xxx+0@toc@l(%r12)
3111 . ld %r2,xxx+8@toc@l(%r12)
3113 . ld %r11,xxx+16@toc@l(%r12)
3116 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3117 code to adjust the value and save r2 to support multiple toc sections.
3118 A ppc_stub_long_branch with an r2 offset looks like:
3120 . addis %r2,%r2,off@ha
3121 . addi %r2,%r2,off@l
3124 A ppc_stub_plt_branch with an r2 offset looks like:
3126 . addis %r12,%r2,xxx@toc@ha
3127 . ld %r11,xxx@toc@l(%r12)
3128 . addis %r2,%r2,off@ha
3129 . addi %r2,%r2,off@l
3134 enum ppc_stub_type {
3136 ppc_stub_long_branch,
3137 ppc_stub_long_branch_r2off,
3138 ppc_stub_plt_branch,
3139 ppc_stub_plt_branch_r2off,
3143 struct ppc_stub_hash_entry {
3145 /* Base hash table entry structure. */
3146 struct bfd_hash_entry root;
3148 enum ppc_stub_type stub_type;
3150 /* The stub section. */
3153 /* Offset within stub_sec of the beginning of this stub. */
3154 bfd_vma stub_offset;
3156 /* Given the symbol's value and its section we can determine its final
3157 value when building the stubs (so the stub knows where to jump. */
3158 bfd_vma target_value;
3159 asection *target_section;
3161 /* The symbol table entry, if any, that this was derived from. */
3162 struct ppc_link_hash_entry *h;
3164 /* And the reloc addend that this was derived from. */
3167 /* Where this stub is being called from, or, in the case of combined
3168 stub sections, the first input section in the group. */
3172 struct ppc_branch_hash_entry {
3174 /* Base hash table entry structure. */
3175 struct bfd_hash_entry root;
3177 /* Offset within .branch_lt. */
3178 unsigned int offset;
3180 /* Generation marker. */
3184 struct ppc_link_hash_entry
3186 struct elf_link_hash_entry elf;
3188 /* A pointer to the most recently used stub hash entry against this
3190 struct ppc_stub_hash_entry *stub_cache;
3192 /* Track dynamic relocs copied for this symbol. */
3193 struct ppc_dyn_relocs *dyn_relocs;
3195 /* Link between function code and descriptor symbols. */
3196 struct ppc_link_hash_entry *oh;
3198 /* Flag function code and descriptor symbols. */
3199 unsigned int is_func:1;
3200 unsigned int is_func_descriptor:1;
3202 /* Whether global opd sym has been adjusted or not.
3203 After ppc64_elf_edit_opd has run, this flag should be set for all
3204 globals defined in any opd section. */
3205 unsigned int adjust_done:1;
3207 /* Set if we twiddled this symbol to weak at some stage. */
3208 unsigned int was_undefined:1;
3210 /* Contexts in which symbol is used in the GOT (or TOC).
3211 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3212 corresponding relocs are encountered during check_relocs.
3213 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3214 indicate the corresponding GOT entry type is not needed.
3215 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3216 a TPREL one. We use a separate flag rather than setting TPREL
3217 just for convenience in distinguishing the two cases. */
3218 #define TLS_GD 1 /* GD reloc. */
3219 #define TLS_LD 2 /* LD reloc. */
3220 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3221 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3222 #define TLS_TLS 16 /* Any TLS reloc. */
3223 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3224 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3228 /* ppc64 ELF linker hash table. */
3230 struct ppc_link_hash_table
3232 struct elf_link_hash_table elf;
3234 /* The stub hash table. */
3235 struct bfd_hash_table stub_hash_table;
3237 /* Another hash table for plt_branch stubs. */
3238 struct bfd_hash_table branch_hash_table;
3240 /* Linker stub bfd. */
3243 /* Linker call-backs. */
3244 asection * (*add_stub_section) (const char *, asection *);
3245 void (*layout_sections_again) (void);
3247 /* Array to keep track of which stub sections have been created, and
3248 information on stub grouping. */
3250 /* This is the section to which stubs in the group will be attached. */
3252 /* The stub section. */
3254 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3258 /* Temp used when calculating TOC pointers. */
3261 /* Highest input section id. */
3264 /* Highest output section index. */
3267 /* List of input sections for each output section. */
3268 asection **input_list;
3270 /* Short-cuts to get to dynamic linker sections. */
3281 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3282 struct ppc_link_hash_entry *tls_get_addr;
3283 struct ppc_link_hash_entry *tls_get_addr_fd;
3286 unsigned long stub_count[ppc_stub_plt_call];
3288 /* Set if we should emit symbols for stubs. */
3289 unsigned int emit_stub_syms:1;
3292 unsigned int stub_error:1;
3294 /* Flag set when small branches are detected. Used to
3295 select suitable defaults for the stub group size. */
3296 unsigned int has_14bit_branch:1;
3298 /* Temp used by ppc64_elf_check_directives. */
3299 unsigned int twiddled_syms:1;
3301 /* Incremented every time we size stubs. */
3302 unsigned int stub_iteration;
3304 /* Small local sym to section mapping cache. */
3305 struct sym_sec_cache sym_sec;
3308 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3310 #define ppc_hash_table(p) \
3311 ((struct ppc_link_hash_table *) ((p)->hash))
3313 #define ppc_stub_hash_lookup(table, string, create, copy) \
3314 ((struct ppc_stub_hash_entry *) \
3315 bfd_hash_lookup ((table), (string), (create), (copy)))
3317 #define ppc_branch_hash_lookup(table, string, create, copy) \
3318 ((struct ppc_branch_hash_entry *) \
3319 bfd_hash_lookup ((table), (string), (create), (copy)))
3321 /* Create an entry in the stub hash table. */
3323 static struct bfd_hash_entry *
3324 stub_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, sizeof (struct ppc_stub_hash_entry));
3337 /* Call the allocation method of the superclass. */
3338 entry = bfd_hash_newfunc (entry, table, string);
3341 struct ppc_stub_hash_entry *eh;
3343 /* Initialize the local fields. */
3344 eh = (struct ppc_stub_hash_entry *) entry;
3345 eh->stub_type = ppc_stub_none;
3346 eh->stub_sec = NULL;
3347 eh->stub_offset = 0;
3348 eh->target_value = 0;
3349 eh->target_section = NULL;
3357 /* Create an entry in the branch hash table. */
3359 static struct bfd_hash_entry *
3360 branch_hash_newfunc (struct bfd_hash_entry *entry,
3361 struct bfd_hash_table *table,
3364 /* Allocate the structure if it has not already been allocated by a
3368 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3373 /* Call the allocation method of the superclass. */
3374 entry = bfd_hash_newfunc (entry, table, string);
3377 struct ppc_branch_hash_entry *eh;
3379 /* Initialize the local fields. */
3380 eh = (struct ppc_branch_hash_entry *) entry;
3388 /* Create an entry in a ppc64 ELF linker hash table. */
3390 static struct bfd_hash_entry *
3391 link_hash_newfunc (struct bfd_hash_entry *entry,
3392 struct bfd_hash_table *table,
3395 /* Allocate the structure if it has not already been allocated by a
3399 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3404 /* Call the allocation method of the superclass. */
3405 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3408 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3410 eh->stub_cache = NULL;
3411 eh->dyn_relocs = NULL;
3414 eh->is_func_descriptor = 0;
3415 eh->adjust_done = 0;
3416 eh->was_undefined = 0;
3423 /* Create a ppc64 ELF linker hash table. */
3425 static struct bfd_link_hash_table *
3426 ppc64_elf_link_hash_table_create (bfd *abfd)
3428 struct ppc_link_hash_table *htab;
3429 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3431 htab = bfd_zmalloc (amt);
3435 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3441 /* Init the stub hash table too. */
3442 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3445 /* And the branch hash table. */
3446 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3449 /* Initializing two fields of the union is just cosmetic. We really
3450 only care about glist, but when compiled on a 32-bit host the
3451 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3452 debugger inspection of these fields look nicer. */
3453 htab->elf.init_refcount.refcount = 0;
3454 htab->elf.init_refcount.glist = NULL;
3455 htab->elf.init_offset.offset = 0;
3456 htab->elf.init_offset.glist = NULL;
3458 return &htab->elf.root;
3461 /* Free the derived linker hash table. */
3464 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3466 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3468 bfd_hash_table_free (&ret->stub_hash_table);
3469 bfd_hash_table_free (&ret->branch_hash_table);
3470 _bfd_generic_link_hash_table_free (hash);
3473 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3476 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3478 struct ppc_link_hash_table *htab;
3480 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3482 /* Always hook our dynamic sections into the first bfd, which is the
3483 linker created stub bfd. This ensures that the GOT header is at
3484 the start of the output TOC section. */
3485 htab = ppc_hash_table (info);
3486 htab->stub_bfd = abfd;
3487 htab->elf.dynobj = abfd;
3490 /* Build a name for an entry in the stub hash table. */
3493 ppc_stub_name (const asection *input_section,
3494 const asection *sym_sec,
3495 const struct ppc_link_hash_entry *h,
3496 const Elf_Internal_Rela *rel)
3501 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3502 offsets from a sym as a branch target? In fact, we could
3503 probably assume the addend is always zero. */
3504 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3508 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3509 stub_name = bfd_malloc (len);
3510 if (stub_name != NULL)
3512 sprintf (stub_name, "%08x.%s+%x",
3513 input_section->id & 0xffffffff,
3514 h->elf.root.root.string,
3515 (int) rel->r_addend & 0xffffffff);
3520 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3521 stub_name = bfd_malloc (len);
3522 if (stub_name != NULL)
3524 sprintf (stub_name, "%08x.%x:%x+%x",
3525 input_section->id & 0xffffffff,
3526 sym_sec->id & 0xffffffff,
3527 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3528 (int) rel->r_addend & 0xffffffff);
3534 /* Look up an entry in the stub hash. Stub entries are cached because
3535 creating the stub name takes a bit of time. */
3537 static struct ppc_stub_hash_entry *
3538 ppc_get_stub_entry (const asection *input_section,
3539 const asection *sym_sec,
3540 struct ppc_link_hash_entry *h,
3541 const Elf_Internal_Rela *rel,
3542 struct ppc_link_hash_table *htab)
3544 struct ppc_stub_hash_entry *stub_entry;
3545 const asection *id_sec;
3547 /* If this input section is part of a group of sections sharing one
3548 stub section, then use the id of the first section in the group.
3549 Stub names need to include a section id, as there may well be
3550 more than one stub used to reach say, printf, and we need to
3551 distinguish between them. */
3552 id_sec = htab->stub_group[input_section->id].link_sec;
3554 if (h != NULL && h->stub_cache != NULL
3555 && h->stub_cache->h == h
3556 && h->stub_cache->id_sec == id_sec)
3558 stub_entry = h->stub_cache;
3564 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3565 if (stub_name == NULL)
3568 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3569 stub_name, FALSE, FALSE);
3571 h->stub_cache = stub_entry;
3579 /* Add a new stub entry to the stub hash. Not all fields of the new
3580 stub entry are initialised. */
3582 static struct ppc_stub_hash_entry *
3583 ppc_add_stub (const char *stub_name,
3585 struct ppc_link_hash_table *htab)
3589 struct ppc_stub_hash_entry *stub_entry;
3591 link_sec = htab->stub_group[section->id].link_sec;
3592 stub_sec = htab->stub_group[section->id].stub_sec;
3593 if (stub_sec == NULL)
3595 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3596 if (stub_sec == NULL)
3602 namelen = strlen (link_sec->name);
3603 len = namelen + sizeof (STUB_SUFFIX);
3604 s_name = bfd_alloc (htab->stub_bfd, len);
3608 memcpy (s_name, link_sec->name, namelen);
3609 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3610 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3611 if (stub_sec == NULL)
3613 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3615 htab->stub_group[section->id].stub_sec = stub_sec;
3618 /* Enter this entry into the linker stub hash table. */
3619 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3621 if (stub_entry == NULL)
3623 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3624 section->owner, stub_name);
3628 stub_entry->stub_sec = stub_sec;
3629 stub_entry->stub_offset = 0;
3630 stub_entry->id_sec = link_sec;
3634 /* Create sections for linker generated code. */
3637 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3639 struct ppc_link_hash_table *htab;
3642 htab = ppc_hash_table (info);
3644 /* Create .sfpr for code to save and restore fp regs. */
3645 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3646 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3647 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3648 if (htab->sfpr == NULL
3649 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3650 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3653 /* Create .glink for lazy dynamic linking support. */
3654 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3655 if (htab->glink == NULL
3656 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3657 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3660 /* Create .branch_lt for plt_branch stubs. */
3661 flags = (SEC_ALLOC | SEC_LOAD
3662 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3663 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3664 if (htab->brlt == NULL
3665 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3666 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3671 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3672 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3673 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3675 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3676 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3682 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3683 not already done. */
3686 create_got_section (bfd *abfd, struct bfd_link_info *info)
3688 asection *got, *relgot;
3690 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3694 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3697 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3702 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3703 | SEC_LINKER_CREATED);
3705 got = bfd_make_section (abfd, ".got");
3707 || !bfd_set_section_flags (abfd, got, flags)
3708 || !bfd_set_section_alignment (abfd, got, 3))
3711 relgot = bfd_make_section (abfd, ".rela.got");
3713 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3714 || ! bfd_set_section_alignment (abfd, relgot, 3))
3717 ppc64_elf_tdata (abfd)->got = got;
3718 ppc64_elf_tdata (abfd)->relgot = relgot;
3722 /* Create the dynamic sections, and set up shortcuts. */
3725 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3727 struct ppc_link_hash_table *htab;
3729 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3732 htab = ppc_hash_table (info);
3734 htab->got = bfd_get_section_by_name (dynobj, ".got");
3735 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3736 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3737 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3739 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3741 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3742 || (!info->shared && !htab->relbss))
3748 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3751 ppc64_elf_copy_indirect_symbol
3752 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3753 struct elf_link_hash_entry *dir,
3754 struct elf_link_hash_entry *ind)
3756 struct ppc_link_hash_entry *edir, *eind;
3759 edir = (struct ppc_link_hash_entry *) dir;
3760 eind = (struct ppc_link_hash_entry *) ind;
3762 /* Copy over any dynamic relocs we may have on the indirect sym. */
3763 if (eind->dyn_relocs != NULL)
3765 if (edir->dyn_relocs != NULL)
3767 struct ppc_dyn_relocs **pp;
3768 struct ppc_dyn_relocs *p;
3770 if (eind->elf.root.type == bfd_link_hash_indirect)
3773 /* Add reloc counts against the weak sym to the strong sym
3774 list. Merge any entries against the same section. */
3775 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3777 struct ppc_dyn_relocs *q;
3779 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3780 if (q->sec == p->sec)
3782 q->pc_count += p->pc_count;
3783 q->count += p->count;
3790 *pp = edir->dyn_relocs;
3793 edir->dyn_relocs = eind->dyn_relocs;
3794 eind->dyn_relocs = NULL;
3797 edir->is_func |= eind->is_func;
3798 edir->is_func_descriptor |= eind->is_func_descriptor;
3799 edir->tls_mask |= eind->tls_mask;
3801 mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR
3802 | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF
3803 | ELF_LINK_HASH_NEEDS_PLT);
3804 /* If called to transfer flags for a weakdef during processing
3805 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3806 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3807 if (ELIMINATE_COPY_RELOCS
3808 && eind->elf.root.type != bfd_link_hash_indirect
3809 && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
3810 mask &= ~ELF_LINK_NON_GOT_REF;
3812 edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask;
3814 /* If we were called to copy over info for a weak sym, that's all. */
3815 if (eind->elf.root.type != bfd_link_hash_indirect)
3818 /* Copy over got entries that we may have already seen to the
3819 symbol which just became indirect. */
3820 if (eind->elf.got.glist != NULL)
3822 if (edir->elf.got.glist != NULL)
3824 struct got_entry **entp;
3825 struct got_entry *ent;
3827 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3829 struct got_entry *dent;
3831 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3832 if (dent->addend == ent->addend
3833 && dent->owner == ent->owner
3834 && dent->tls_type == ent->tls_type)
3836 dent->got.refcount += ent->got.refcount;
3843 *entp = edir->elf.got.glist;
3846 edir->elf.got.glist = eind->elf.got.glist;
3847 eind->elf.got.glist = NULL;
3850 /* And plt entries. */
3851 if (eind->elf.plt.plist != NULL)
3853 if (edir->elf.plt.plist != NULL)
3855 struct plt_entry **entp;
3856 struct plt_entry *ent;
3858 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3860 struct plt_entry *dent;
3862 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3863 if (dent->addend == ent->addend)
3865 dent->plt.refcount += ent->plt.refcount;
3872 *entp = edir->elf.plt.plist;
3875 edir->elf.plt.plist = eind->elf.plt.plist;
3876 eind->elf.plt.plist = NULL;
3879 if (edir->elf.dynindx == -1)
3881 edir->elf.dynindx = eind->elf.dynindx;
3882 edir->elf.dynstr_index = eind->elf.dynstr_index;
3883 eind->elf.dynindx = -1;
3884 eind->elf.dynstr_index = 0;
3887 BFD_ASSERT (eind->elf.dynindx == -1);
3890 /* Find the function descriptor hash entry from the given function code
3891 hash entry FH. Link the entries via their OH fields. */
3893 static struct ppc_link_hash_entry *
3894 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3896 struct ppc_link_hash_entry *fdh = fh->oh;
3900 const char *fd_name = fh->elf.root.root.string + 1;
3902 fdh = (struct ppc_link_hash_entry *)
3903 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3906 fdh->is_func_descriptor = 1;
3916 /* Hacks to support old ABI code.
3917 When making function calls, old ABI code references function entry
3918 points (dot symbols), while new ABI code references the function
3919 descriptor symbol. We need to make any combination of reference and
3920 definition work together, without breaking archive linking.
3922 For a defined function "foo" and an undefined call to "bar":
3923 An old object defines "foo" and ".foo", references ".bar" (possibly
3925 A new object defines "foo" and references "bar".
3927 A new object thus has no problem with its undefined symbols being
3928 satisfied by definitions in an old object. On the other hand, the
3929 old object won't have ".bar" satisfied by a new object. */
3931 /* Fix function descriptor symbols defined in .opd sections to be
3935 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
3936 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3937 Elf_Internal_Sym *isym,
3938 const char **name ATTRIBUTE_UNUSED,
3939 flagword *flags ATTRIBUTE_UNUSED,
3941 bfd_vma *value ATTRIBUTE_UNUSED)
3944 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
3945 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
3949 /* This function makes an old ABI object reference to ".bar" cause the
3950 inclusion of a new ABI object archive that defines "bar". */
3952 static struct elf_link_hash_entry *
3953 ppc64_elf_archive_symbol_lookup (bfd *abfd,
3954 struct bfd_link_info *info,
3957 struct elf_link_hash_entry *h;
3961 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
3968 len = strlen (name);
3969 dot_name = bfd_alloc (abfd, len + 2);
3970 if (dot_name == NULL)
3971 return (struct elf_link_hash_entry *) 0 - 1;
3973 memcpy (dot_name + 1, name, len + 1);
3974 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
3975 bfd_release (abfd, dot_name);
3979 /* This function satisfies all old ABI object references to ".bar" if a
3980 new ABI object defines "bar". Well, at least, undefined dot symbols
3981 are made weak. This stops later archive searches from including an
3982 object if we already have a function descriptor definition. It also
3983 prevents the linker complaining about undefined symbols.
3984 We also check and correct mismatched symbol visibility here. The
3985 most restrictive visibility of the function descriptor and the
3986 function entry symbol is used. */
3989 add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
3991 struct bfd_link_info *info;
3992 struct ppc_link_hash_table *htab;
3993 struct ppc_link_hash_entry *eh;
3994 struct ppc_link_hash_entry *fdh;
3996 if (h->root.type == bfd_link_hash_indirect)
3999 if (h->root.type == bfd_link_hash_warning)
4000 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4002 if (h->root.root.string[0] != '.')
4006 htab = ppc_hash_table (info);
4007 eh = (struct ppc_link_hash_entry *) h;
4008 fdh = get_fdh (eh, htab);
4011 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4012 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4013 if (entry_vis < descr_vis)
4014 fdh->elf.other += entry_vis - descr_vis;
4015 else if (entry_vis > descr_vis)
4016 eh->elf.other += descr_vis - entry_vis;
4018 if (eh->elf.root.type == bfd_link_hash_undefined)
4020 eh->elf.root.type = bfd_link_hash_undefweak;
4021 eh->was_undefined = 1;
4022 htab->twiddled_syms = 1;
4030 ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4031 struct bfd_link_info *info)
4033 struct ppc_link_hash_table *htab;
4034 extern const bfd_target bfd_elf64_powerpc_vec;
4035 extern const bfd_target bfd_elf64_powerpcle_vec;
4037 htab = ppc_hash_table (info);
4038 if (htab->elf.root.creator != &bfd_elf64_powerpc_vec
4039 && htab->elf.root.creator != &bfd_elf64_powerpcle_vec)
4042 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, info);
4044 /* We need to fix the undefs list for any syms we have twiddled to
4046 if (htab->twiddled_syms)
4048 struct bfd_link_hash_entry **pun;
4050 pun = &htab->elf.root.undefs;
4051 while (*pun != NULL)
4053 struct bfd_link_hash_entry *h = *pun;
4055 if (h->type != bfd_link_hash_undefined
4056 && h->type != bfd_link_hash_common)
4060 if (h == htab->elf.root.undefs_tail)
4062 if (pun == &htab->elf.root.undefs)
4063 htab->elf.root.undefs_tail = NULL;
4065 /* pun points at an und_next field. Go back to
4066 the start of the link_hash_entry. */
4067 htab->elf.root.undefs_tail = (struct bfd_link_hash_entry *)
4068 ((char *) pun - ((char *) &h->und_next - (char *) h));
4076 htab->twiddled_syms = 0;
4082 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4083 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4085 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4086 char *local_got_tls_masks;
4088 if (local_got_ents == NULL)
4090 bfd_size_type size = symtab_hdr->sh_info;
4092 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4093 local_got_ents = bfd_zalloc (abfd, size);
4094 if (local_got_ents == NULL)
4096 elf_local_got_ents (abfd) = local_got_ents;
4099 if ((tls_type & TLS_EXPLICIT) == 0)
4101 struct got_entry *ent;
4103 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4104 if (ent->addend == r_addend
4105 && ent->owner == abfd
4106 && ent->tls_type == tls_type)
4110 bfd_size_type amt = sizeof (*ent);
4111 ent = bfd_alloc (abfd, amt);
4114 ent->next = local_got_ents[r_symndx];
4115 ent->addend = r_addend;
4117 ent->tls_type = tls_type;
4118 ent->got.refcount = 0;
4119 local_got_ents[r_symndx] = ent;
4121 ent->got.refcount += 1;
4124 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4125 local_got_tls_masks[r_symndx] |= tls_type;
4130 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4132 struct plt_entry *ent;
4134 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4135 if (ent->addend == addend)
4139 bfd_size_type amt = sizeof (*ent);
4140 ent = bfd_alloc (abfd, amt);
4143 ent->next = eh->elf.plt.plist;
4144 ent->addend = addend;
4145 ent->plt.refcount = 0;
4146 eh->elf.plt.plist = ent;
4148 ent->plt.refcount += 1;
4149 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4154 /* Look through the relocs for a section during the first phase, and
4155 calculate needed space in the global offset table, procedure
4156 linkage table, and dynamic reloc sections. */
4159 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4160 asection *sec, const Elf_Internal_Rela *relocs)
4162 struct ppc_link_hash_table *htab;
4163 Elf_Internal_Shdr *symtab_hdr;
4164 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4165 const Elf_Internal_Rela *rel;
4166 const Elf_Internal_Rela *rel_end;
4168 asection **opd_sym_map;
4170 if (info->relocatable)
4173 /* Don't do anything special with non-loaded, non-alloced sections.
4174 In particular, any relocs in such sections should not affect GOT
4175 and PLT reference counting (ie. we don't allow them to create GOT
4176 or PLT entries), there's no possibility or desire to optimize TLS
4177 relocs, and there's not much point in propagating relocs to shared
4178 libs that the dynamic linker won't relocate. */
4179 if ((sec->flags & SEC_ALLOC) == 0)
4182 htab = ppc_hash_table (info);
4183 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4185 sym_hashes = elf_sym_hashes (abfd);
4186 sym_hashes_end = (sym_hashes
4187 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4188 - symtab_hdr->sh_info);
4192 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4194 /* Garbage collection needs some extra help with .opd sections.
4195 We don't want to necessarily keep everything referenced by
4196 relocs in .opd, as that would keep all functions. Instead,
4197 if we reference an .opd symbol (a function descriptor), we
4198 want to keep the function code symbol's section. This is
4199 easy for global symbols, but for local syms we need to keep
4200 information about the associated function section. Later, if
4201 edit_opd deletes entries, we'll use this array to adjust
4202 local syms in .opd. */
4204 asection *func_section;
4209 amt = sec->size * sizeof (union opd_info) / 8;
4210 opd_sym_map = bfd_zalloc (abfd, amt);
4211 if (opd_sym_map == NULL)
4213 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
4216 if (htab->sfpr == NULL
4217 && !create_linkage_sections (htab->elf.dynobj, info))
4220 rel_end = relocs + sec->reloc_count;
4221 for (rel = relocs; rel < rel_end; rel++)
4223 unsigned long r_symndx;
4224 struct elf_link_hash_entry *h;
4225 enum elf_ppc64_reloc_type r_type;
4228 r_symndx = ELF64_R_SYM (rel->r_info);
4229 if (r_symndx < symtab_hdr->sh_info)
4232 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4234 r_type = ELF64_R_TYPE (rel->r_info);
4237 case R_PPC64_GOT_TLSLD16:
4238 case R_PPC64_GOT_TLSLD16_LO:
4239 case R_PPC64_GOT_TLSLD16_HI:
4240 case R_PPC64_GOT_TLSLD16_HA:
4241 ppc64_tlsld_got (abfd)->refcount += 1;
4242 tls_type = TLS_TLS | TLS_LD;
4245 case R_PPC64_GOT_TLSGD16:
4246 case R_PPC64_GOT_TLSGD16_LO:
4247 case R_PPC64_GOT_TLSGD16_HI:
4248 case R_PPC64_GOT_TLSGD16_HA:
4249 tls_type = TLS_TLS | TLS_GD;
4252 case R_PPC64_GOT_TPREL16_DS:
4253 case R_PPC64_GOT_TPREL16_LO_DS:
4254 case R_PPC64_GOT_TPREL16_HI:
4255 case R_PPC64_GOT_TPREL16_HA:
4257 info->flags |= DF_STATIC_TLS;
4258 tls_type = TLS_TLS | TLS_TPREL;
4261 case R_PPC64_GOT_DTPREL16_DS:
4262 case R_PPC64_GOT_DTPREL16_LO_DS:
4263 case R_PPC64_GOT_DTPREL16_HI:
4264 case R_PPC64_GOT_DTPREL16_HA:
4265 tls_type = TLS_TLS | TLS_DTPREL;
4267 sec->has_tls_reloc = 1;
4271 case R_PPC64_GOT16_DS:
4272 case R_PPC64_GOT16_HA:
4273 case R_PPC64_GOT16_HI:
4274 case R_PPC64_GOT16_LO:
4275 case R_PPC64_GOT16_LO_DS:
4276 /* This symbol requires a global offset table entry. */
4277 sec->has_gp_reloc = 1;
4278 if (ppc64_elf_tdata (abfd)->got == NULL
4279 && !create_got_section (abfd, info))
4284 struct ppc_link_hash_entry *eh;
4285 struct got_entry *ent;
4287 eh = (struct ppc_link_hash_entry *) h;
4288 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4289 if (ent->addend == rel->r_addend
4290 && ent->owner == abfd
4291 && ent->tls_type == tls_type)
4295 bfd_size_type amt = sizeof (*ent);
4296 ent = bfd_alloc (abfd, amt);
4299 ent->next = eh->elf.got.glist;
4300 ent->addend = rel->r_addend;
4302 ent->tls_type = tls_type;
4303 ent->got.refcount = 0;
4304 eh->elf.got.glist = ent;
4306 ent->got.refcount += 1;
4307 eh->tls_mask |= tls_type;
4310 /* This is a global offset table entry for a local symbol. */
4311 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4312 rel->r_addend, tls_type))
4316 case R_PPC64_PLT16_HA:
4317 case R_PPC64_PLT16_HI:
4318 case R_PPC64_PLT16_LO:
4321 /* This symbol requires a procedure linkage table entry. We
4322 actually build the entry in adjust_dynamic_symbol,
4323 because this might be a case of linking PIC code without
4324 linking in any dynamic objects, in which case we don't
4325 need to generate a procedure linkage table after all. */
4328 /* It does not make sense to have a procedure linkage
4329 table entry for a local symbol. */
4330 bfd_set_error (bfd_error_bad_value);
4334 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4339 /* The following relocations don't need to propagate the
4340 relocation if linking a shared object since they are
4341 section relative. */
4342 case R_PPC64_SECTOFF:
4343 case R_PPC64_SECTOFF_LO:
4344 case R_PPC64_SECTOFF_HI:
4345 case R_PPC64_SECTOFF_HA:
4346 case R_PPC64_SECTOFF_DS:
4347 case R_PPC64_SECTOFF_LO_DS:
4348 case R_PPC64_DTPREL16:
4349 case R_PPC64_DTPREL16_LO:
4350 case R_PPC64_DTPREL16_HI:
4351 case R_PPC64_DTPREL16_HA:
4352 case R_PPC64_DTPREL16_DS:
4353 case R_PPC64_DTPREL16_LO_DS:
4354 case R_PPC64_DTPREL16_HIGHER:
4355 case R_PPC64_DTPREL16_HIGHERA:
4356 case R_PPC64_DTPREL16_HIGHEST:
4357 case R_PPC64_DTPREL16_HIGHESTA:
4362 case R_PPC64_TOC16_LO:
4363 case R_PPC64_TOC16_HI:
4364 case R_PPC64_TOC16_HA:
4365 case R_PPC64_TOC16_DS:
4366 case R_PPC64_TOC16_LO_DS:
4367 sec->has_gp_reloc = 1;
4370 /* This relocation describes the C++ object vtable hierarchy.
4371 Reconstruct it for later use during GC. */
4372 case R_PPC64_GNU_VTINHERIT:
4373 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4377 /* This relocation describes which C++ vtable entries are actually
4378 used. Record for later use during GC. */
4379 case R_PPC64_GNU_VTENTRY:
4380 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4385 case R_PPC64_REL14_BRTAKEN:
4386 case R_PPC64_REL14_BRNTAKEN:
4387 htab->has_14bit_branch = 1;
4393 /* We may need a .plt entry if the function this reloc
4394 refers to is in a shared lib. */
4395 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4398 if (h == &htab->tls_get_addr->elf
4399 || h == &htab->tls_get_addr_fd->elf)
4400 sec->has_tls_reloc = 1;
4401 else if (htab->tls_get_addr == NULL
4402 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
4403 && (h->root.root.string[15] == 0
4404 || h->root.root.string[15] == '@'))
4406 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4407 sec->has_tls_reloc = 1;
4409 else if (htab->tls_get_addr_fd == NULL
4410 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4411 && (h->root.root.string[14] == 0
4412 || h->root.root.string[14] == '@'))
4414 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4415 sec->has_tls_reloc = 1;
4420 case R_PPC64_TPREL64:
4421 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4423 info->flags |= DF_STATIC_TLS;
4426 case R_PPC64_DTPMOD64:
4427 if (rel + 1 < rel_end
4428 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4429 && rel[1].r_offset == rel->r_offset + 8)
4430 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4432 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4435 case R_PPC64_DTPREL64:
4436 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4438 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4439 && rel[-1].r_offset == rel->r_offset - 8)
4440 /* This is the second reloc of a dtpmod, dtprel pair.
4441 Don't mark with TLS_DTPREL. */
4445 sec->has_tls_reloc = 1;
4448 struct ppc_link_hash_entry *eh;
4449 eh = (struct ppc_link_hash_entry *) h;
4450 eh->tls_mask |= tls_type;
4453 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4454 rel->r_addend, tls_type))
4457 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4459 /* One extra to simplify get_tls_mask. */
4460 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4461 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4462 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4465 BFD_ASSERT (rel->r_offset % 8 == 0);
4466 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4468 /* Mark the second slot of a GD or LD entry.
4469 -1 to indicate GD and -2 to indicate LD. */
4470 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4471 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4472 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4473 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4476 case R_PPC64_TPREL16:
4477 case R_PPC64_TPREL16_LO:
4478 case R_PPC64_TPREL16_HI:
4479 case R_PPC64_TPREL16_HA:
4480 case R_PPC64_TPREL16_DS:
4481 case R_PPC64_TPREL16_LO_DS:
4482 case R_PPC64_TPREL16_HIGHER:
4483 case R_PPC64_TPREL16_HIGHERA:
4484 case R_PPC64_TPREL16_HIGHEST:
4485 case R_PPC64_TPREL16_HIGHESTA:
4488 info->flags |= DF_STATIC_TLS;
4493 case R_PPC64_ADDR64:
4494 if (opd_sym_map != NULL
4495 && rel + 1 < rel_end
4496 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4500 if (h->root.root.string[0] == '.'
4501 && h->root.root.string[1] != 0
4502 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4505 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4511 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4516 opd_sym_map[rel->r_offset / 8] = s;
4524 case R_PPC64_ADDR14:
4525 case R_PPC64_ADDR14_BRNTAKEN:
4526 case R_PPC64_ADDR14_BRTAKEN:
4527 case R_PPC64_ADDR16:
4528 case R_PPC64_ADDR16_DS:
4529 case R_PPC64_ADDR16_HA:
4530 case R_PPC64_ADDR16_HI:
4531 case R_PPC64_ADDR16_HIGHER:
4532 case R_PPC64_ADDR16_HIGHERA:
4533 case R_PPC64_ADDR16_HIGHEST:
4534 case R_PPC64_ADDR16_HIGHESTA:
4535 case R_PPC64_ADDR16_LO:
4536 case R_PPC64_ADDR16_LO_DS:
4537 case R_PPC64_ADDR24:
4538 case R_PPC64_ADDR32:
4539 case R_PPC64_UADDR16:
4540 case R_PPC64_UADDR32:
4541 case R_PPC64_UADDR64:
4543 if (h != NULL && !info->shared)
4544 /* We may need a copy reloc. */
4545 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
4547 /* Don't propagate .opd relocs. */
4548 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4551 /* If we are creating a shared library, and this is a reloc
4552 against a global symbol, or a non PC relative reloc
4553 against a local symbol, then we need to copy the reloc
4554 into the shared library. However, if we are linking with
4555 -Bsymbolic, we do not need to copy a reloc against a
4556 global symbol which is defined in an object we are
4557 including in the link (i.e., DEF_REGULAR is set). At
4558 this point we have not seen all the input files, so it is
4559 possible that DEF_REGULAR is not set now but will be set
4560 later (it is never cleared). In case of a weak definition,
4561 DEF_REGULAR may be cleared later by a strong definition in
4562 a shared library. We account for that possibility below by
4563 storing information in the dyn_relocs field of the hash
4564 table entry. A similar situation occurs when creating
4565 shared libraries and symbol visibility changes render the
4568 If on the other hand, we are creating an executable, we
4569 may need to keep relocations for symbols satisfied by a
4570 dynamic library if we manage to avoid copy relocs for the
4574 && (MUST_BE_DYN_RELOC (r_type)
4576 && (! info->symbolic
4577 || h->root.type == bfd_link_hash_defweak
4578 || (h->elf_link_hash_flags
4579 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
4580 || (ELIMINATE_COPY_RELOCS
4583 && (h->root.type == bfd_link_hash_defweak
4584 || (h->elf_link_hash_flags
4585 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
4587 struct ppc_dyn_relocs *p;
4588 struct ppc_dyn_relocs **head;
4590 /* We must copy these reloc types into the output file.
4591 Create a reloc section in dynobj and make room for
4598 name = (bfd_elf_string_from_elf_section
4600 elf_elfheader (abfd)->e_shstrndx,
4601 elf_section_data (sec)->rel_hdr.sh_name));
4605 if (strncmp (name, ".rela", 5) != 0
4606 || strcmp (bfd_get_section_name (abfd, sec),
4609 (*_bfd_error_handler)
4610 (_("%B: bad relocation section name `%s\'"),
4612 bfd_set_error (bfd_error_bad_value);
4615 dynobj = htab->elf.dynobj;
4616 sreloc = bfd_get_section_by_name (dynobj, name);
4621 sreloc = bfd_make_section (dynobj, name);
4622 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4623 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4624 if ((sec->flags & SEC_ALLOC) != 0)
4625 flags |= SEC_ALLOC | SEC_LOAD;
4627 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4628 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4631 elf_section_data (sec)->sreloc = sreloc;
4634 /* If this is a global symbol, we count the number of
4635 relocations we need for this symbol. */
4638 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4642 /* Track dynamic relocs needed for local syms too.
4643 We really need local syms available to do this
4647 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4652 head = ((struct ppc_dyn_relocs **)
4653 &elf_section_data (s)->local_dynrel);
4657 if (p == NULL || p->sec != sec)
4659 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4670 if (!MUST_BE_DYN_RELOC (r_type))
4683 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4684 of the code entry point, and its section. */
4687 opd_entry_value (asection *opd_sec,
4689 asection **code_sec,
4692 bfd *opd_bfd = opd_sec->owner;
4693 Elf_Internal_Rela *lo, *hi, *look;
4695 /* Go find the opd reloc at the sym address. */
4696 lo = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4697 BFD_ASSERT (lo != NULL);
4698 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4702 look = lo + (hi - lo) / 2;
4703 if (look->r_offset < offset)
4705 else if (look->r_offset > offset)
4709 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4710 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4711 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4713 unsigned long symndx = ELF64_R_SYM (look->r_info);
4717 if (symndx < symtab_hdr->sh_info)
4719 Elf_Internal_Sym *sym;
4721 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4724 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4725 symtab_hdr->sh_info,
4726 0, NULL, NULL, NULL);
4728 return (bfd_vma) -1;
4729 symtab_hdr->contents = (bfd_byte *) sym;
4733 val = sym->st_value;
4735 if ((sym->st_shndx != SHN_UNDEF
4736 && sym->st_shndx < SHN_LORESERVE)
4737 || sym->st_shndx > SHN_HIRESERVE)
4738 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4739 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4743 struct elf_link_hash_entry **sym_hashes;
4744 struct elf_link_hash_entry *rh;
4746 sym_hashes = elf_sym_hashes (opd_bfd);
4747 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4748 while (rh->root.type == bfd_link_hash_indirect
4749 || rh->root.type == bfd_link_hash_warning)
4750 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4751 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4752 || rh->root.type == bfd_link_hash_defweak);
4753 val = rh->root.u.def.value;
4754 sec = rh->root.u.def.section;
4756 val += look->r_addend;
4757 if (code_off != NULL)
4759 if (code_sec != NULL)
4761 if (sec != NULL && sec->output_section != NULL)
4762 val += sec->output_section->vma + sec->output_offset;
4768 return (bfd_vma) -1;
4771 /* Return the section that should be marked against GC for a given
4775 ppc64_elf_gc_mark_hook (asection *sec,
4776 struct bfd_link_info *info,
4777 Elf_Internal_Rela *rel,
4778 struct elf_link_hash_entry *h,
4779 Elf_Internal_Sym *sym)
4783 /* First mark all our entry sym sections. */
4784 if (info->gc_sym_list != NULL)
4786 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4787 struct bfd_sym_chain *sym = info->gc_sym_list;
4789 info->gc_sym_list = NULL;
4792 struct ppc_link_hash_entry *eh;
4794 eh = (struct ppc_link_hash_entry *)
4795 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4798 if (eh->elf.root.type != bfd_link_hash_defined
4799 && eh->elf.root.type != bfd_link_hash_defweak)
4802 if (eh->is_func_descriptor)
4803 rsec = eh->oh->elf.root.u.def.section;
4804 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4805 && opd_entry_value (eh->elf.root.u.def.section,
4806 eh->elf.root.u.def.value,
4807 &rsec, NULL) != (bfd_vma) -1)
4813 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4815 rsec = eh->elf.root.u.def.section;
4817 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4821 while (sym != NULL);
4824 /* Syms return NULL if we're marking .opd, so we avoid marking all
4825 function sections, as all functions are referenced in .opd. */
4827 if (get_opd_info (sec) != NULL)
4832 enum elf_ppc64_reloc_type r_type;
4833 struct ppc_link_hash_entry *eh;
4835 r_type = ELF64_R_TYPE (rel->r_info);
4838 case R_PPC64_GNU_VTINHERIT:
4839 case R_PPC64_GNU_VTENTRY:
4843 switch (h->root.type)
4845 case bfd_link_hash_defined:
4846 case bfd_link_hash_defweak:
4847 eh = (struct ppc_link_hash_entry *) h;
4848 if (eh->oh != NULL && eh->oh->is_func_descriptor)
4851 /* Function descriptor syms cause the associated
4852 function code sym section to be marked. */
4853 if (eh->is_func_descriptor)
4855 /* They also mark their opd section. */
4856 if (!eh->elf.root.u.def.section->gc_mark)
4857 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4858 ppc64_elf_gc_mark_hook);
4860 rsec = eh->oh->elf.root.u.def.section;
4862 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4863 && opd_entry_value (eh->elf.root.u.def.section,
4864 eh->elf.root.u.def.value,
4865 &rsec, NULL) != (bfd_vma) -1)
4867 if (!eh->elf.root.u.def.section->gc_mark)
4868 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4869 ppc64_elf_gc_mark_hook);
4872 rsec = h->root.u.def.section;
4875 case bfd_link_hash_common:
4876 rsec = h->root.u.c.p->section;
4886 asection **opd_sym_section;
4888 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4889 opd_sym_section = get_opd_info (rsec);
4890 if (opd_sym_section != NULL)
4893 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4895 rsec = opd_sym_section[sym->st_value / 8];
4902 /* Update the .got, .plt. and dynamic reloc reference counts for the
4903 section being removed. */
4906 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4907 asection *sec, const Elf_Internal_Rela *relocs)
4909 struct ppc_link_hash_table *htab;
4910 Elf_Internal_Shdr *symtab_hdr;
4911 struct elf_link_hash_entry **sym_hashes;
4912 struct got_entry **local_got_ents;
4913 const Elf_Internal_Rela *rel, *relend;
4915 if ((sec->flags & SEC_ALLOC) == 0)
4918 elf_section_data (sec)->local_dynrel = NULL;
4920 htab = ppc_hash_table (info);
4921 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4922 sym_hashes = elf_sym_hashes (abfd);
4923 local_got_ents = elf_local_got_ents (abfd);
4925 relend = relocs + sec->reloc_count;
4926 for (rel = relocs; rel < relend; rel++)
4928 unsigned long r_symndx;
4929 enum elf_ppc64_reloc_type r_type;
4930 struct elf_link_hash_entry *h = NULL;
4933 r_symndx = ELF64_R_SYM (rel->r_info);
4934 r_type = ELF64_R_TYPE (rel->r_info);
4935 if (r_symndx >= symtab_hdr->sh_info)
4937 struct ppc_link_hash_entry *eh;
4938 struct ppc_dyn_relocs **pp;
4939 struct ppc_dyn_relocs *p;
4941 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4942 eh = (struct ppc_link_hash_entry *) h;
4944 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4947 /* Everything must go for SEC. */
4955 case R_PPC64_GOT_TLSLD16:
4956 case R_PPC64_GOT_TLSLD16_LO:
4957 case R_PPC64_GOT_TLSLD16_HI:
4958 case R_PPC64_GOT_TLSLD16_HA:
4959 ppc64_tlsld_got (abfd)->refcount -= 1;
4960 tls_type = TLS_TLS | TLS_LD;
4963 case R_PPC64_GOT_TLSGD16:
4964 case R_PPC64_GOT_TLSGD16_LO:
4965 case R_PPC64_GOT_TLSGD16_HI:
4966 case R_PPC64_GOT_TLSGD16_HA:
4967 tls_type = TLS_TLS | TLS_GD;
4970 case R_PPC64_GOT_TPREL16_DS:
4971 case R_PPC64_GOT_TPREL16_LO_DS:
4972 case R_PPC64_GOT_TPREL16_HI:
4973 case R_PPC64_GOT_TPREL16_HA:
4974 tls_type = TLS_TLS | TLS_TPREL;
4977 case R_PPC64_GOT_DTPREL16_DS:
4978 case R_PPC64_GOT_DTPREL16_LO_DS:
4979 case R_PPC64_GOT_DTPREL16_HI:
4980 case R_PPC64_GOT_DTPREL16_HA:
4981 tls_type = TLS_TLS | TLS_DTPREL;
4985 case R_PPC64_GOT16_DS:
4986 case R_PPC64_GOT16_HA:
4987 case R_PPC64_GOT16_HI:
4988 case R_PPC64_GOT16_LO:
4989 case R_PPC64_GOT16_LO_DS:
4992 struct got_entry *ent;
4997 ent = local_got_ents[r_symndx];
4999 for (; ent != NULL; ent = ent->next)
5000 if (ent->addend == rel->r_addend
5001 && ent->owner == abfd
5002 && ent->tls_type == tls_type)
5006 if (ent->got.refcount > 0)
5007 ent->got.refcount -= 1;
5011 case R_PPC64_PLT16_HA:
5012 case R_PPC64_PLT16_HI:
5013 case R_PPC64_PLT16_LO:
5017 case R_PPC64_REL14_BRNTAKEN:
5018 case R_PPC64_REL14_BRTAKEN:
5022 struct plt_entry *ent;
5024 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5025 if (ent->addend == rel->r_addend)
5029 if (ent->plt.refcount > 0)
5030 ent->plt.refcount -= 1;
5041 /* The maximum size of .sfpr. */
5042 #define SFPR_MAX (218*4)
5044 struct sfpr_def_parms
5046 const char name[12];
5047 unsigned char lo, hi;
5048 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5049 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5052 /* Auto-generate _save*, _rest* functions in .sfpr. */
5055 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5057 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5059 size_t len = strlen (parm->name);
5060 bfd_boolean writing = FALSE;
5063 memcpy (sym, parm->name, len);
5066 for (i = parm->lo; i <= parm->hi; i++)
5068 struct elf_link_hash_entry *h;
5070 sym[len + 0] = i / 10 + '0';
5071 sym[len + 1] = i % 10 + '0';
5072 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5074 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
5076 h->root.type = bfd_link_hash_defined;
5077 h->root.u.def.section = htab->sfpr;
5078 h->root.u.def.value = htab->sfpr->size;
5080 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
5081 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5083 if (htab->sfpr->contents == NULL)
5085 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5086 if (htab->sfpr->contents == NULL)
5092 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5094 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5096 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5097 htab->sfpr->size = p - htab->sfpr->contents;
5105 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5107 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5112 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5114 p = savegpr0 (abfd, p, r);
5115 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5117 bfd_put_32 (abfd, BLR, p);
5122 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5124 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5129 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5131 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5133 p = restgpr0 (abfd, p, r);
5134 bfd_put_32 (abfd, MTLR_R0, p);
5138 p = restgpr0 (abfd, p, 30);
5139 p = restgpr0 (abfd, p, 31);
5141 bfd_put_32 (abfd, BLR, p);
5146 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5148 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5153 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5155 p = savegpr1 (abfd, p, r);
5156 bfd_put_32 (abfd, BLR, p);
5161 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5163 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5168 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5170 p = restgpr1 (abfd, p, r);
5171 bfd_put_32 (abfd, BLR, p);
5176 savefpr (bfd *abfd, bfd_byte *p, int r)
5178 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5183 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5185 p = savefpr (abfd, p, r);
5186 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5188 bfd_put_32 (abfd, BLR, p);
5193 restfpr (bfd *abfd, bfd_byte *p, int r)
5195 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5200 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5202 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5204 p = restfpr (abfd, p, r);
5205 bfd_put_32 (abfd, MTLR_R0, p);
5209 p = restfpr (abfd, p, 30);
5210 p = restfpr (abfd, p, 31);
5212 bfd_put_32 (abfd, BLR, p);
5217 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5219 p = savefpr (abfd, p, r);
5220 bfd_put_32 (abfd, BLR, p);
5225 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5227 p = restfpr (abfd, p, r);
5228 bfd_put_32 (abfd, BLR, p);
5233 savevr (bfd *abfd, bfd_byte *p, int r)
5235 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5237 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5242 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5244 p = savevr (abfd, p, r);
5245 bfd_put_32 (abfd, BLR, p);
5250 restvr (bfd *abfd, bfd_byte *p, int r)
5252 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5254 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5259 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5261 p = restvr (abfd, p, r);
5262 bfd_put_32 (abfd, BLR, p);
5266 /* Called via elf_link_hash_traverse to transfer dynamic linking
5267 information on function code symbol entries to their corresponding
5268 function descriptor symbol entries. */
5271 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5273 struct bfd_link_info *info;
5274 struct ppc_link_hash_table *htab;
5275 struct plt_entry *ent;
5276 struct ppc_link_hash_entry *fh;
5277 struct ppc_link_hash_entry *fdh;
5278 bfd_boolean force_local;
5280 fh = (struct ppc_link_hash_entry *) h;
5281 if (fh->elf.root.type == bfd_link_hash_indirect)
5284 if (fh->elf.root.type == bfd_link_hash_warning)
5285 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5288 htab = ppc_hash_table (info);
5290 /* Resolve undefined references to dot-symbols as the value
5291 in the function descriptor, if we have one in a regular object.
5292 This is to satisfy cases like ".quad .foo". Calls to functions
5293 in dynamic objects are handled elsewhere. */
5294 if (fh->elf.root.type == bfd_link_hash_undefweak
5295 && fh->was_undefined
5296 && (fh->oh->elf.root.type == bfd_link_hash_defined
5297 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5298 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5299 && opd_entry_value (fh->oh->elf.root.u.def.section,
5300 fh->oh->elf.root.u.def.value,
5301 &fh->elf.root.u.def.section,
5302 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5304 fh->elf.root.type = fh->oh->elf.root.type;
5305 fh->elf.elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
5308 /* If this is a function code symbol, transfer dynamic linking
5309 information to the function descriptor symbol. */
5313 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5314 if (ent->plt.refcount > 0)
5317 || fh->elf.root.root.string[0] != '.'
5318 || fh->elf.root.root.string[1] == '\0')
5321 /* Find the corresponding function descriptor symbol. Create it
5322 as undefined if necessary. */
5324 fdh = get_fdh (fh, htab);
5326 while (fdh->elf.root.type == bfd_link_hash_indirect
5327 || fdh->elf.root.type == bfd_link_hash_warning)
5328 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5332 && (fh->elf.root.type == bfd_link_hash_undefined
5333 || fh->elf.root.type == bfd_link_hash_undefweak))
5337 struct bfd_link_hash_entry *bh;
5339 abfd = fh->elf.root.u.undef.abfd;
5340 newsym = bfd_make_empty_symbol (abfd);
5341 newsym->name = fh->elf.root.root.string + 1;
5342 newsym->section = bfd_und_section_ptr;
5344 newsym->flags = BSF_OBJECT;
5345 if (fh->elf.root.type == bfd_link_hash_undefweak)
5346 newsym->flags |= BSF_WEAK;
5348 bh = &fdh->elf.root;
5349 if ( !(_bfd_generic_link_add_one_symbol
5350 (info, abfd, newsym->name, newsym->flags,
5351 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
5355 fdh = (struct ppc_link_hash_entry *) bh;
5356 fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
5358 fdh->elf.type = STT_OBJECT;
5362 && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
5364 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5365 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
5366 || (fdh->elf.root.type == bfd_link_hash_undefweak
5367 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5369 if (fdh->elf.dynindx == -1)
5370 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5372 fdh->elf.elf_link_hash_flags
5373 |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
5374 | ELF_LINK_HASH_REF_DYNAMIC
5375 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
5376 | ELF_LINK_NON_GOT_REF));
5377 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5379 struct plt_entry **ep = &fdh->elf.plt.plist;
5382 *ep = fh->elf.plt.plist;
5383 fh->elf.plt.plist = NULL;
5384 fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
5386 fdh->is_func_descriptor = 1;
5391 /* Now that the info is on the function descriptor, clear the
5392 function code sym info. Any function code syms for which we
5393 don't have a definition in a regular file, we force local.
5394 This prevents a shared library from exporting syms that have
5395 been imported from another library. Function code syms that
5396 are really in the library we must leave global to prevent the
5397 linker dragging in a definition from a static library. */
5400 && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
5402 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
5403 || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0));
5404 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5409 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5410 this hook to a) provide some gcc support functions, and b) transfer
5411 dynamic linking information gathered so far on function code symbol
5412 entries, to their corresponding function descriptor symbol entries. */
5415 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5416 struct bfd_link_info *info)
5418 struct ppc_link_hash_table *htab;
5420 const struct sfpr_def_parms funcs[] =
5422 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5423 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5424 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5425 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5426 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5427 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5428 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5429 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5430 { "._savef", 14, 31, savefpr, savefpr1_tail },
5431 { "._restf", 14, 31, restfpr, restfpr1_tail },
5432 { "_savevr_", 20, 31, savevr, savevr_tail },
5433 { "_restvr_", 20, 31, restvr, restvr_tail }
5436 htab = ppc_hash_table (info);
5437 if (htab->sfpr == NULL)
5438 /* We don't have any relocs. */
5441 /* Provide any missing _save* and _rest* functions. */
5442 htab->sfpr->size = 0;
5443 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5444 if (!sfpr_define (info, &funcs[i]))
5447 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5449 if (htab->sfpr->size == 0)
5450 _bfd_strip_section_from_output (info, htab->sfpr);
5455 /* Adjust a symbol defined by a dynamic object and referenced by a
5456 regular object. The current definition is in some section of the
5457 dynamic object, but we're not including those sections. We have to
5458 change the definition to something the rest of the link can
5462 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5463 struct elf_link_hash_entry *h)
5465 struct ppc_link_hash_table *htab;
5467 unsigned int power_of_two;
5469 htab = ppc_hash_table (info);
5471 /* Deal with function syms. */
5472 if (h->type == STT_FUNC
5473 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
5475 /* Clear procedure linkage table information for any symbol that
5476 won't need a .plt entry. */
5477 struct plt_entry *ent;
5478 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5479 if (ent->plt.refcount > 0)
5482 || SYMBOL_CALLS_LOCAL (info, h)
5483 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5484 && h->root.type == bfd_link_hash_undefweak))
5486 h->plt.plist = NULL;
5487 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5491 h->plt.plist = NULL;
5493 /* If this is a weak symbol, and there is a real definition, the
5494 processor independent code will have arranged for us to see the
5495 real definition first, and we can just use the same value. */
5496 if (h->weakdef != NULL)
5498 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
5499 || h->weakdef->root.type == bfd_link_hash_defweak);
5500 h->root.u.def.section = h->weakdef->root.u.def.section;
5501 h->root.u.def.value = h->weakdef->root.u.def.value;
5502 if (ELIMINATE_COPY_RELOCS)
5503 h->elf_link_hash_flags
5504 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
5505 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
5509 /* If we are creating a shared library, we must presume that the
5510 only references to the symbol are via the global offset table.
5511 For such cases we need not do anything here; the relocations will
5512 be handled correctly by relocate_section. */
5516 /* If there are no references to this symbol that do not use the
5517 GOT, we don't need to generate a copy reloc. */
5518 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
5521 if (ELIMINATE_COPY_RELOCS)
5523 struct ppc_link_hash_entry * eh;
5524 struct ppc_dyn_relocs *p;
5526 eh = (struct ppc_link_hash_entry *) h;
5527 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5529 s = p->sec->output_section;
5530 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5534 /* If we didn't find any dynamic relocs in read-only sections, then
5535 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5538 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
5543 if (h->plt.plist != NULL)
5545 /* We should never get here, but unfortunately there are versions
5546 of gcc out there that improperly (for this ABI) put initialized
5547 function pointers, vtable refs and suchlike in read-only
5548 sections. Allow them to proceed, but warn that this might
5549 break at runtime. */
5550 (*_bfd_error_handler)
5551 (_("copy reloc against `%s' requires lazy plt linking; "
5552 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5553 h->root.root.string);
5556 /* This is a reference to a symbol defined by a dynamic object which
5557 is not a function. */
5559 /* We must allocate the symbol in our .dynbss section, which will
5560 become part of the .bss section of the executable. There will be
5561 an entry for this symbol in the .dynsym section. The dynamic
5562 object will contain position independent code, so all references
5563 from the dynamic object to this symbol will go through the global
5564 offset table. The dynamic linker will use the .dynsym entry to
5565 determine the address it must put in the global offset table, so
5566 both the dynamic object and the regular object will refer to the
5567 same memory location for the variable. */
5569 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5570 to copy the initial value out of the dynamic object and into the
5571 runtime process image. We need to remember the offset into the
5572 .rela.bss section we are going to use. */
5573 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5575 htab->relbss->size += sizeof (Elf64_External_Rela);
5576 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
5579 /* We need to figure out the alignment required for this symbol. I
5580 have no idea how ELF linkers handle this. */
5581 power_of_two = bfd_log2 (h->size);
5582 if (power_of_two > 4)
5585 /* Apply the required alignment. */
5587 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5588 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5590 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5594 /* Define the symbol as being at this point in the section. */
5595 h->root.u.def.section = s;
5596 h->root.u.def.value = s->size;
5598 /* Increment the section size to make room for the symbol. */
5604 /* If given a function descriptor symbol, hide both the function code
5605 sym and the descriptor. */
5607 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5608 struct elf_link_hash_entry *h,
5609 bfd_boolean force_local)
5611 struct ppc_link_hash_entry *eh;
5612 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5614 eh = (struct ppc_link_hash_entry *) h;
5615 if (eh->is_func_descriptor)
5617 struct ppc_link_hash_entry *fh = eh->oh;
5622 struct ppc_link_hash_table *htab;
5625 /* We aren't supposed to use alloca in BFD because on
5626 systems which do not have alloca the version in libiberty
5627 calls xmalloc, which might cause the program to crash
5628 when it runs out of memory. This function doesn't have a
5629 return status, so there's no way to gracefully return an
5630 error. So cheat. We know that string[-1] can be safely
5631 accessed; It's either a string in an ELF string table,
5632 or allocated in an objalloc structure. */
5634 p = eh->elf.root.root.string - 1;
5637 htab = ppc_hash_table (info);
5638 fh = (struct ppc_link_hash_entry *)
5639 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5642 /* Unfortunately, if it so happens that the string we were
5643 looking for was allocated immediately before this string,
5644 then we overwrote the string terminator. That's the only
5645 reason the lookup should fail. */
5648 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5649 while (q >= eh->elf.root.root.string && *q == *p)
5651 if (q < eh->elf.root.root.string && *p == '.')
5652 fh = (struct ppc_link_hash_entry *)
5653 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5662 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5667 get_sym_h (struct elf_link_hash_entry **hp,
5668 Elf_Internal_Sym **symp,
5671 Elf_Internal_Sym **locsymsp,
5672 unsigned long r_symndx,
5675 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5677 if (r_symndx >= symtab_hdr->sh_info)
5679 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5680 struct elf_link_hash_entry *h;
5682 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5683 while (h->root.type == bfd_link_hash_indirect
5684 || h->root.type == bfd_link_hash_warning)
5685 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5693 if (symsecp != NULL)
5695 asection *symsec = NULL;
5696 if (h->root.type == bfd_link_hash_defined
5697 || h->root.type == bfd_link_hash_defweak)
5698 symsec = h->root.u.def.section;
5702 if (tls_maskp != NULL)
5704 struct ppc_link_hash_entry *eh;
5706 eh = (struct ppc_link_hash_entry *) h;
5707 *tls_maskp = &eh->tls_mask;
5712 Elf_Internal_Sym *sym;
5713 Elf_Internal_Sym *locsyms = *locsymsp;
5715 if (locsyms == NULL)
5717 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5718 if (locsyms == NULL)
5719 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5720 symtab_hdr->sh_info,
5721 0, NULL, NULL, NULL);
5722 if (locsyms == NULL)
5724 *locsymsp = locsyms;
5726 sym = locsyms + r_symndx;
5734 if (symsecp != NULL)
5736 asection *symsec = NULL;
5737 if ((sym->st_shndx != SHN_UNDEF
5738 && sym->st_shndx < SHN_LORESERVE)
5739 || sym->st_shndx > SHN_HIRESERVE)
5740 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5744 if (tls_maskp != NULL)
5746 struct got_entry **lgot_ents;
5750 lgot_ents = elf_local_got_ents (ibfd);
5751 if (lgot_ents != NULL)
5753 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5754 tls_mask = &lgot_masks[r_symndx];
5756 *tls_maskp = tls_mask;
5762 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5763 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5764 type suitable for optimization, and 1 otherwise. */
5767 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5768 Elf_Internal_Sym **locsymsp,
5769 const Elf_Internal_Rela *rel, bfd *ibfd)
5771 unsigned long r_symndx;
5773 struct elf_link_hash_entry *h;
5774 Elf_Internal_Sym *sym;
5778 r_symndx = ELF64_R_SYM (rel->r_info);
5779 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5782 if ((*tls_maskp != NULL && **tls_maskp != 0)
5784 || ppc64_elf_section_data (sec)->t_symndx == NULL)
5787 /* Look inside a TOC section too. */
5790 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5791 off = h->root.u.def.value;
5794 off = sym->st_value;
5795 off += rel->r_addend;
5796 BFD_ASSERT (off % 8 == 0);
5797 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
5798 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
5799 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5801 if (toc_symndx != NULL)
5802 *toc_symndx = r_symndx;
5804 || ((h->root.type == bfd_link_hash_defined
5805 || h->root.type == bfd_link_hash_defweak)
5806 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
5807 && (next_r == -1 || next_r == -2))
5812 /* Adjust all global syms defined in opd sections. In gcc generated
5813 code for the old ABI, these will already have been done. */
5816 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5818 struct ppc_link_hash_entry *eh;
5822 if (h->root.type == bfd_link_hash_indirect)
5825 if (h->root.type == bfd_link_hash_warning)
5826 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5828 if (h->root.type != bfd_link_hash_defined
5829 && h->root.type != bfd_link_hash_defweak)
5832 eh = (struct ppc_link_hash_entry *) h;
5833 if (eh->adjust_done)
5836 sym_sec = eh->elf.root.u.def.section;
5837 opd_adjust = get_opd_info (sym_sec);
5838 if (opd_adjust != NULL)
5840 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
5843 /* This entry has been deleted. */
5844 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5847 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5848 if (elf_discarded_section (dsec))
5850 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5854 eh->elf.root.u.def.value = 0;
5855 eh->elf.root.u.def.section = dsec;
5858 eh->elf.root.u.def.value += adjust;
5859 eh->adjust_done = 1;
5864 /* Remove unused Official Procedure Descriptor entries. Currently we
5865 only remove those associated with functions in discarded link-once
5866 sections, or weakly defined functions that have been overridden. It
5867 would be possible to remove many more entries for statically linked
5871 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
5872 bfd_boolean non_overlapping)
5875 bfd_boolean some_edited = FALSE;
5876 asection *need_pad = NULL;
5878 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5881 Elf_Internal_Rela *relstart, *rel, *relend;
5882 Elf_Internal_Shdr *symtab_hdr;
5883 Elf_Internal_Sym *local_syms;
5884 struct elf_link_hash_entry **sym_hashes;
5888 bfd_boolean need_edit, add_aux_fields;
5889 bfd_size_type cnt_16b = 0;
5891 sec = bfd_get_section_by_name (ibfd, ".opd");
5895 amt = sec->size * sizeof (long) / 8;
5896 opd_adjust = get_opd_info (sec);
5897 if (opd_adjust == NULL)
5899 /* Must be a ld -r link. ie. check_relocs hasn't been
5901 opd_adjust = bfd_zalloc (obfd, amt);
5902 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
5904 memset (opd_adjust, 0, amt);
5906 if (sec->output_section == bfd_abs_section_ptr)
5909 /* Look through the section relocs. */
5910 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
5914 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5915 sym_hashes = elf_sym_hashes (ibfd);
5917 /* Read the relocations. */
5918 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5920 if (relstart == NULL)
5923 /* First run through the relocs to check they are sane, and to
5924 determine whether we need to edit this opd section. */
5928 relend = relstart + sec->reloc_count;
5929 for (rel = relstart; rel < relend; )
5931 enum elf_ppc64_reloc_type r_type;
5932 unsigned long r_symndx;
5934 struct elf_link_hash_entry *h;
5935 Elf_Internal_Sym *sym;
5937 /* .opd contains a regular array of 16 or 24 byte entries. We're
5938 only interested in the reloc pointing to a function entry
5940 if (rel->r_offset != offset
5941 || rel + 1 >= relend
5942 || (rel + 1)->r_offset != offset + 8)
5944 /* If someone messes with .opd alignment then after a
5945 "ld -r" we might have padding in the middle of .opd.
5946 Also, there's nothing to prevent someone putting
5947 something silly in .opd with the assembler. No .opd
5948 optimization for them! */
5950 (*_bfd_error_handler)
5951 (_("%B: .opd is not a regular array of opd entries"), ibfd);
5956 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
5957 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
5959 (*_bfd_error_handler)
5960 (_("%B: unexpected reloc type %u in .opd section"),
5966 r_symndx = ELF64_R_SYM (rel->r_info);
5967 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5971 if (sym_sec == NULL || sym_sec->owner == NULL)
5973 const char *sym_name;
5975 sym_name = h->root.root.string;
5977 sym_name = bfd_elf_local_sym_name (ibfd, sym);
5979 (*_bfd_error_handler)
5980 (_("%B: undefined sym `%s' in .opd section"),
5986 /* opd entries are always for functions defined in the
5987 current input bfd. If the symbol isn't defined in the
5988 input bfd, then we won't be using the function in this
5989 bfd; It must be defined in a linkonce section in another
5990 bfd, or is weak. It's also possible that we are
5991 discarding the function due to a linker script /DISCARD/,
5992 which we test for via the output_section. */
5993 if (sym_sec->owner != ibfd
5994 || sym_sec->output_section == bfd_abs_section_ptr)
5999 || (rel + 1 == relend && rel->r_offset == offset + 16))
6001 if (sec->size == offset + 24)
6006 if (rel == relend && sec->size == offset + 16)
6014 if (rel->r_offset == offset + 24)
6016 else if (rel->r_offset != offset + 16)
6018 else if (rel + 1 < relend
6019 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6020 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6025 else if (rel + 2 < relend
6026 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6027 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6036 add_aux_fields = non_overlapping && cnt_16b > 0;
6038 if (need_edit || add_aux_fields)
6040 Elf_Internal_Rela *write_rel;
6041 bfd_byte *rptr, *wptr;
6042 bfd_byte *new_contents = NULL;
6046 /* This seems a waste of time as input .opd sections are all
6047 zeros as generated by gcc, but I suppose there's no reason
6048 this will always be so. We might start putting something in
6049 the third word of .opd entries. */
6050 if ((sec->flags & SEC_IN_MEMORY) == 0)
6053 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6058 if (local_syms != NULL
6059 && symtab_hdr->contents != (unsigned char *) local_syms)
6061 if (elf_section_data (sec)->relocs != relstart)
6065 sec->contents = loc;
6066 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6069 elf_section_data (sec)->relocs = relstart;
6071 wptr = sec->contents;
6072 rptr = sec->contents;
6073 new_contents = sec->contents;
6077 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6078 if (new_contents == NULL)
6081 wptr = new_contents;
6084 write_rel = relstart;
6088 for (rel = relstart; rel < relend; rel++)
6090 unsigned long r_symndx;
6092 struct elf_link_hash_entry *h;
6093 Elf_Internal_Sym *sym;
6095 r_symndx = ELF64_R_SYM (rel->r_info);
6096 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6100 if (rel->r_offset == offset)
6102 struct ppc_link_hash_entry *fdh = NULL;
6104 /* See if the .opd entry is full 24 byte or
6105 16 byte (with fd_aux entry overlapped with next
6108 if ((rel + 2 == relend && sec->size == offset + 16)
6109 || (rel + 3 < relend
6110 && rel[2].r_offset == offset + 16
6111 && rel[3].r_offset == offset + 24
6112 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6113 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6117 && h->root.root.string[0] == '.')
6118 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6119 ppc_hash_table (info));
6121 skip = (sym_sec->owner != ibfd
6122 || sym_sec->output_section == bfd_abs_section_ptr);
6125 if (fdh != NULL && sym_sec->owner == ibfd)
6127 /* Arrange for the function descriptor sym
6129 fdh->elf.root.u.def.value = 0;
6130 fdh->elf.root.u.def.section = sym_sec;
6132 opd_adjust[rel->r_offset / 8] = -1;
6136 /* We'll be keeping this opd entry. */
6140 /* Redefine the function descriptor symbol to
6141 this location in the opd section. It is
6142 necessary to update the value here rather
6143 than using an array of adjustments as we do
6144 for local symbols, because various places
6145 in the generic ELF code use the value
6146 stored in u.def.value. */
6147 fdh->elf.root.u.def.value = wptr - new_contents;
6148 fdh->adjust_done = 1;
6151 /* Local syms are a bit tricky. We could
6152 tweak them as they can be cached, but
6153 we'd need to look through the local syms
6154 for the function descriptor sym which we
6155 don't have at the moment. So keep an
6156 array of adjustments. */
6157 opd_adjust[rel->r_offset / 8]
6158 = (wptr - new_contents) - (rptr - sec->contents);
6161 memcpy (wptr, rptr, opd_ent_size);
6162 wptr += opd_ent_size;
6163 if (add_aux_fields && opd_ent_size == 16)
6165 memset (wptr, '\0', 8);
6169 rptr += opd_ent_size;
6170 offset += opd_ent_size;
6175 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
6178 /* We won't be needing dynamic relocs here. */
6179 struct ppc_dyn_relocs **pp;
6180 struct ppc_dyn_relocs *p;
6183 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6184 else if (sym_sec != NULL)
6185 pp = ((struct ppc_dyn_relocs **)
6186 &elf_section_data (sym_sec)->local_dynrel);
6188 pp = ((struct ppc_dyn_relocs **)
6189 &elf_section_data (sec)->local_dynrel);
6190 while ((p = *pp) != NULL)
6205 /* We need to adjust any reloc offsets to point to the
6206 new opd entries. While we're at it, we may as well
6207 remove redundant relocs. */
6208 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6209 if (write_rel != rel)
6210 memcpy (write_rel, rel, sizeof (*rel));
6215 sec->size = wptr - new_contents;
6216 sec->reloc_count = write_rel - relstart;
6219 free (sec->contents);
6220 sec->contents = new_contents;
6223 /* Fudge the size too, as this is used later in
6224 elf_bfd_final_link if we are emitting relocs. */
6225 elf_section_data (sec)->rel_hdr.sh_size
6226 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6227 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6230 else if (elf_section_data (sec)->relocs != relstart)
6233 if (local_syms != NULL
6234 && symtab_hdr->contents != (unsigned char *) local_syms)
6236 if (!info->keep_memory)
6239 symtab_hdr->contents = (unsigned char *) local_syms;
6244 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6246 /* If we are doing a final link and the last .opd entry is just 16 byte
6247 long, add a 8 byte padding after it. */
6248 if (need_pad != NULL && !info->relocatable)
6252 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6254 BFD_ASSERT (need_pad->size > 0);
6256 p = bfd_malloc (need_pad->size + 8);
6260 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6261 p, 0, need_pad->size))
6264 need_pad->contents = p;
6265 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6269 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6273 need_pad->contents = p;
6276 memset (need_pad->contents + need_pad->size, 0, 8);
6277 need_pad->size += 8;
6283 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6286 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6288 struct ppc_link_hash_table *htab;
6290 htab = ppc_hash_table (info);
6291 if (htab->tls_get_addr != NULL)
6293 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6295 while (h->elf.root.type == bfd_link_hash_indirect
6296 || h->elf.root.type == bfd_link_hash_warning)
6297 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6299 htab->tls_get_addr = h;
6301 if (htab->tls_get_addr_fd == NULL
6303 && h->oh->is_func_descriptor)
6304 htab->tls_get_addr_fd = h->oh;
6307 if (htab->tls_get_addr_fd != NULL)
6309 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6311 while (h->elf.root.type == bfd_link_hash_indirect
6312 || h->elf.root.type == bfd_link_hash_warning)
6313 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6315 htab->tls_get_addr_fd = h;
6318 return _bfd_elf_tls_setup (obfd, info);
6321 /* Run through all the TLS relocs looking for optimization
6322 opportunities. The linker has been hacked (see ppc64elf.em) to do
6323 a preliminary section layout so that we know the TLS segment
6324 offsets. We can't optimize earlier because some optimizations need
6325 to know the tp offset, and we need to optimize before allocating
6326 dynamic relocations. */
6329 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6333 struct ppc_link_hash_table *htab;
6335 if (info->relocatable || info->shared)
6338 htab = ppc_hash_table (info);
6339 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6341 Elf_Internal_Sym *locsyms = NULL;
6343 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6344 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6346 Elf_Internal_Rela *relstart, *rel, *relend;
6347 int expecting_tls_get_addr;
6349 /* Read the relocations. */
6350 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6352 if (relstart == NULL)
6355 expecting_tls_get_addr = 0;
6356 relend = relstart + sec->reloc_count;
6357 for (rel = relstart; rel < relend; rel++)
6359 enum elf_ppc64_reloc_type r_type;
6360 unsigned long r_symndx;
6361 struct elf_link_hash_entry *h;
6362 Elf_Internal_Sym *sym;
6365 char tls_set, tls_clear, tls_type = 0;
6367 bfd_boolean ok_tprel, is_local;
6369 r_symndx = ELF64_R_SYM (rel->r_info);
6370 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6374 if (elf_section_data (sec)->relocs != relstart)
6377 && (elf_tdata (ibfd)->symtab_hdr.contents
6378 != (unsigned char *) locsyms))
6385 if (h->root.type != bfd_link_hash_defined
6386 && h->root.type != bfd_link_hash_defweak)
6388 value = h->root.u.def.value;
6391 /* Symbols referenced by TLS relocs must be of type
6392 STT_TLS. So no need for .opd local sym adjust. */
6393 value = sym->st_value;
6398 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
6401 value += sym_sec->output_offset;
6402 value += sym_sec->output_section->vma;
6403 value -= htab->elf.tls_sec->vma;
6404 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6405 < (bfd_vma) 1 << 32);
6408 r_type = ELF64_R_TYPE (rel->r_info);
6411 case R_PPC64_GOT_TLSLD16:
6412 case R_PPC64_GOT_TLSLD16_LO:
6413 case R_PPC64_GOT_TLSLD16_HI:
6414 case R_PPC64_GOT_TLSLD16_HA:
6415 /* These relocs should never be against a symbol
6416 defined in a shared lib. Leave them alone if
6417 that turns out to be the case. */
6418 ppc64_tlsld_got (ibfd)->refcount -= 1;
6425 tls_type = TLS_TLS | TLS_LD;
6426 expecting_tls_get_addr = 1;
6429 case R_PPC64_GOT_TLSGD16:
6430 case R_PPC64_GOT_TLSGD16_LO:
6431 case R_PPC64_GOT_TLSGD16_HI:
6432 case R_PPC64_GOT_TLSGD16_HA:
6438 tls_set = TLS_TLS | TLS_TPRELGD;
6440 tls_type = TLS_TLS | TLS_GD;
6441 expecting_tls_get_addr = 1;
6444 case R_PPC64_GOT_TPREL16_DS:
6445 case R_PPC64_GOT_TPREL16_LO_DS:
6446 case R_PPC64_GOT_TPREL16_HI:
6447 case R_PPC64_GOT_TPREL16_HA:
6448 expecting_tls_get_addr = 0;
6453 tls_clear = TLS_TPREL;
6454 tls_type = TLS_TLS | TLS_TPREL;
6461 case R_PPC64_REL14_BRTAKEN:
6462 case R_PPC64_REL14_BRNTAKEN:
6465 && (h == &htab->tls_get_addr->elf
6466 || h == &htab->tls_get_addr_fd->elf))
6468 if (!expecting_tls_get_addr
6470 && ((ELF64_R_TYPE (rel[-1].r_info)
6472 || (ELF64_R_TYPE (rel[-1].r_info)
6473 == R_PPC64_TOC16_LO)))
6475 /* Check for toc tls entries. */
6479 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6483 if (toc_tls != NULL)
6484 expecting_tls_get_addr = retval > 1;
6487 if (expecting_tls_get_addr)
6489 struct plt_entry *ent;
6490 for (ent = h->plt.plist; ent; ent = ent->next)
6491 if (ent->addend == 0)
6493 if (ent->plt.refcount > 0)
6494 ent->plt.refcount -= 1;
6499 expecting_tls_get_addr = 0;
6502 case R_PPC64_TPREL64:
6503 expecting_tls_get_addr = 0;
6507 tls_set = TLS_EXPLICIT;
6508 tls_clear = TLS_TPREL;
6514 case R_PPC64_DTPMOD64:
6515 expecting_tls_get_addr = 0;
6516 if (rel + 1 < relend
6518 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6519 && rel[1].r_offset == rel->r_offset + 8)
6523 tls_set = TLS_EXPLICIT | TLS_GD;
6526 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6535 tls_set = TLS_EXPLICIT;
6541 expecting_tls_get_addr = 0;
6545 if ((tls_set & TLS_EXPLICIT) == 0)
6547 struct got_entry *ent;
6549 /* Adjust got entry for this reloc. */
6553 ent = elf_local_got_ents (ibfd)[r_symndx];
6555 for (; ent != NULL; ent = ent->next)
6556 if (ent->addend == rel->r_addend
6557 && ent->owner == ibfd
6558 && ent->tls_type == tls_type)
6565 /* We managed to get rid of a got entry. */
6566 if (ent->got.refcount > 0)
6567 ent->got.refcount -= 1;
6572 struct ppc_link_hash_entry * eh;
6573 struct ppc_dyn_relocs **pp;
6574 struct ppc_dyn_relocs *p;
6576 /* Adjust dynamic relocs. */
6577 eh = (struct ppc_link_hash_entry *) h;
6578 for (pp = &eh->dyn_relocs;
6583 /* If we got rid of a DTPMOD/DTPREL reloc
6584 pair then we'll lose one or two dyn
6586 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6595 *tls_mask |= tls_set;
6596 *tls_mask &= ~tls_clear;
6599 if (elf_section_data (sec)->relocs != relstart)
6604 && (elf_tdata (ibfd)->symtab_hdr.contents
6605 != (unsigned char *) locsyms))
6607 if (!info->keep_memory)
6610 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6616 /* Allocate space in .plt, .got and associated reloc sections for
6620 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6622 struct bfd_link_info *info;
6623 struct ppc_link_hash_table *htab;
6625 struct ppc_link_hash_entry *eh;
6626 struct ppc_dyn_relocs *p;
6627 struct got_entry *gent;
6629 if (h->root.type == bfd_link_hash_indirect)
6632 if (h->root.type == bfd_link_hash_warning)
6633 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6635 info = (struct bfd_link_info *) inf;
6636 htab = ppc_hash_table (info);
6638 if (htab->elf.dynamic_sections_created
6640 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
6642 struct plt_entry *pent;
6643 bfd_boolean doneone = FALSE;
6644 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
6645 if (pent->plt.refcount > 0)
6647 /* If this is the first .plt entry, make room for the special
6651 s->size += PLT_INITIAL_ENTRY_SIZE;
6653 pent->plt.offset = s->size;
6655 /* Make room for this entry. */
6656 s->size += PLT_ENTRY_SIZE;
6658 /* Make room for the .glink code. */
6661 s->size += GLINK_CALL_STUB_SIZE;
6662 /* We need bigger stubs past index 32767. */
6663 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
6667 /* We also need to make an entry in the .rela.plt section. */
6669 s->size += sizeof (Elf64_External_Rela);
6673 pent->plt.offset = (bfd_vma) -1;
6676 h->plt.plist = NULL;
6677 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
6682 h->plt.plist = NULL;
6683 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
6686 eh = (struct ppc_link_hash_entry *) h;
6687 /* Run through the TLS GD got entries first if we're changing them
6689 if ((eh->tls_mask & TLS_TPRELGD) != 0)
6690 for (gent = h->got.glist; gent != NULL; gent = gent->next)
6691 if (gent->got.refcount > 0
6692 && (gent->tls_type & TLS_GD) != 0)
6694 /* This was a GD entry that has been converted to TPREL. If
6695 there happens to be a TPREL entry we can use that one. */
6696 struct got_entry *ent;
6697 for (ent = h->got.glist; ent != NULL; ent = ent->next)
6698 if (ent->got.refcount > 0
6699 && (ent->tls_type & TLS_TPREL) != 0
6700 && ent->addend == gent->addend
6701 && ent->owner == gent->owner)
6703 gent->got.refcount = 0;
6707 /* If not, then we'll be using our own TPREL entry. */
6708 if (gent->got.refcount != 0)
6709 gent->tls_type = TLS_TLS | TLS_TPREL;
6712 for (gent = h->got.glist; gent != NULL; gent = gent->next)
6713 if (gent->got.refcount > 0)
6717 /* Make sure this symbol is output as a dynamic symbol.
6718 Undefined weak syms won't yet be marked as dynamic,
6719 nor will all TLS symbols. */
6720 if (h->dynindx == -1
6721 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
6723 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6727 if ((gent->tls_type & TLS_LD) != 0
6728 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
6730 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
6734 s = ppc64_elf_tdata (gent->owner)->got;
6735 gent->got.offset = s->size;
6737 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
6738 dyn = htab->elf.dynamic_sections_created;
6740 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
6741 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6742 || h->root.type != bfd_link_hash_undefweak))
6743 ppc64_elf_tdata (gent->owner)->relgot->size
6744 += (gent->tls_type & eh->tls_mask & TLS_GD
6745 ? 2 * sizeof (Elf64_External_Rela)
6746 : sizeof (Elf64_External_Rela));
6749 gent->got.offset = (bfd_vma) -1;
6751 if (eh->dyn_relocs == NULL)
6754 /* In the shared -Bsymbolic case, discard space allocated for
6755 dynamic pc-relative relocs against symbols which turn out to be
6756 defined in regular objects. For the normal shared case, discard
6757 space for relocs that have become local due to symbol visibility
6762 /* Relocs that use pc_count are those that appear on a call insn,
6763 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
6764 generated via assembly. We want calls to protected symbols to
6765 resolve directly to the function rather than going via the plt.
6766 If people want function pointer comparisons to work as expected
6767 then they should avoid writing weird assembly. */
6768 if (SYMBOL_CALLS_LOCAL (info, h))
6770 struct ppc_dyn_relocs **pp;
6772 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6774 p->count -= p->pc_count;
6783 /* Also discard relocs on undefined weak syms with non-default
6785 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6786 && h->root.type == bfd_link_hash_undefweak)
6787 eh->dyn_relocs = NULL;
6789 else if (ELIMINATE_COPY_RELOCS)
6791 /* For the non-shared case, discard space for relocs against
6792 symbols which turn out to need copy relocs or are not
6795 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
6796 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
6797 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
6799 /* Make sure this symbol is output as a dynamic symbol.
6800 Undefined weak syms won't yet be marked as dynamic. */
6801 if (h->dynindx == -1
6802 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
6804 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6808 /* If that succeeded, we know we'll be keeping all the
6810 if (h->dynindx != -1)
6814 eh->dyn_relocs = NULL;
6819 /* Finally, allocate space. */
6820 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6822 asection *sreloc = elf_section_data (p->sec)->sreloc;
6823 sreloc->size += p->count * sizeof (Elf64_External_Rela);
6829 /* Find any dynamic relocs that apply to read-only sections. */
6832 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6834 struct ppc_link_hash_entry *eh;
6835 struct ppc_dyn_relocs *p;
6837 if (h->root.type == bfd_link_hash_warning)
6838 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6840 eh = (struct ppc_link_hash_entry *) h;
6841 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6843 asection *s = p->sec->output_section;
6845 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6847 struct bfd_link_info *info = inf;
6849 info->flags |= DF_TEXTREL;
6851 /* Not an error, just cut short the traversal. */
6858 /* Set the sizes of the dynamic sections. */
6861 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6862 struct bfd_link_info *info)
6864 struct ppc_link_hash_table *htab;
6870 htab = ppc_hash_table (info);
6871 dynobj = htab->elf.dynobj;
6875 if (htab->elf.dynamic_sections_created)
6877 /* Set the contents of the .interp section to the interpreter. */
6878 if (info->executable)
6880 s = bfd_get_section_by_name (dynobj, ".interp");
6883 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6884 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6888 /* Set up .got offsets for local syms, and space for local dynamic
6890 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6892 struct got_entry **lgot_ents;
6893 struct got_entry **end_lgot_ents;
6895 bfd_size_type locsymcount;
6896 Elf_Internal_Shdr *symtab_hdr;
6899 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
6902 if (ppc64_tlsld_got (ibfd)->refcount > 0)
6904 s = ppc64_elf_tdata (ibfd)->got;
6905 ppc64_tlsld_got (ibfd)->offset = s->size;
6909 srel = ppc64_elf_tdata (ibfd)->relgot;
6910 srel->size += sizeof (Elf64_External_Rela);
6914 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
6916 for (s = ibfd->sections; s != NULL; s = s->next)
6918 struct ppc_dyn_relocs *p;
6920 for (p = *((struct ppc_dyn_relocs **)
6921 &elf_section_data (s)->local_dynrel);
6925 if (!bfd_is_abs_section (p->sec)
6926 && bfd_is_abs_section (p->sec->output_section))
6928 /* Input section has been discarded, either because
6929 it is a copy of a linkonce section or due to
6930 linker script /DISCARD/, so we'll be discarding
6933 else if (p->count != 0)
6935 srel = elf_section_data (p->sec)->sreloc;
6936 srel->size += p->count * sizeof (Elf64_External_Rela);
6937 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
6938 info->flags |= DF_TEXTREL;
6943 lgot_ents = elf_local_got_ents (ibfd);
6947 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6948 locsymcount = symtab_hdr->sh_info;
6949 end_lgot_ents = lgot_ents + locsymcount;
6950 lgot_masks = (char *) end_lgot_ents;
6951 s = ppc64_elf_tdata (ibfd)->got;
6952 srel = ppc64_elf_tdata (ibfd)->relgot;
6953 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
6955 struct got_entry *ent;
6957 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
6958 if (ent->got.refcount > 0)
6960 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
6962 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
6964 ppc64_tlsld_got (ibfd)->offset = s->size;
6967 srel->size += sizeof (Elf64_External_Rela);
6969 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
6973 ent->got.offset = s->size;
6974 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
6978 srel->size += 2 * sizeof (Elf64_External_Rela);
6984 srel->size += sizeof (Elf64_External_Rela);
6989 ent->got.offset = (bfd_vma) -1;
6993 /* Allocate global sym .plt and .got entries, and space for global
6994 sym dynamic relocs. */
6995 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
6997 /* We now have determined the sizes of the various dynamic sections.
6998 Allocate memory for them. */
7000 for (s = dynobj->sections; s != NULL; s = s->next)
7002 if ((s->flags & SEC_LINKER_CREATED) == 0)
7005 if (s == htab->brlt || s == htab->relbrlt)
7006 /* These haven't been allocated yet; don't strip. */
7008 else if (s == htab->got
7010 || s == htab->glink)
7012 /* Strip this section if we don't need it; see the
7015 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
7019 /* If we don't need this section, strip it from the
7020 output file. This is mostly to handle .rela.bss and
7021 .rela.plt. We must create both sections in
7022 create_dynamic_sections, because they must be created
7023 before the linker maps input sections to output
7024 sections. The linker does that before
7025 adjust_dynamic_symbol is called, and it is that
7026 function which decides whether anything needs to go
7027 into these sections. */
7031 if (s != htab->relplt)
7034 /* We use the reloc_count field as a counter if we need
7035 to copy relocs into the output file. */
7041 /* It's not one of our sections, so don't allocate space. */
7047 _bfd_strip_section_from_output (info, s);
7051 /* .plt is in the bss section. We don't initialise it. */
7055 /* Allocate memory for the section contents. We use bfd_zalloc
7056 here in case unused entries are not reclaimed before the
7057 section's contents are written out. This should not happen,
7058 but this way if it does we get a R_PPC64_NONE reloc in .rela
7059 sections instead of garbage.
7060 We also rely on the section contents being zero when writing
7062 s->contents = bfd_zalloc (dynobj, s->size);
7063 if (s->contents == NULL)
7067 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7069 s = ppc64_elf_tdata (ibfd)->got;
7070 if (s != NULL && s != htab->got)
7073 _bfd_strip_section_from_output (info, s);
7076 s->contents = bfd_zalloc (ibfd, s->size);
7077 if (s->contents == NULL)
7081 s = ppc64_elf_tdata (ibfd)->relgot;
7085 _bfd_strip_section_from_output (info, s);
7088 s->contents = bfd_zalloc (ibfd, s->size);
7089 if (s->contents == NULL)
7097 if (htab->elf.dynamic_sections_created)
7099 /* Add some entries to the .dynamic section. We fill in the
7100 values later, in ppc64_elf_finish_dynamic_sections, but we
7101 must add the entries now so that we get the correct size for
7102 the .dynamic section. The DT_DEBUG entry is filled in by the
7103 dynamic linker and used by the debugger. */
7104 #define add_dynamic_entry(TAG, VAL) \
7105 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7107 if (info->executable)
7109 if (!add_dynamic_entry (DT_DEBUG, 0))
7113 if (htab->plt != NULL && htab->plt->size != 0)
7115 if (!add_dynamic_entry (DT_PLTGOT, 0)
7116 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7117 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
7118 || !add_dynamic_entry (DT_JMPREL, 0)
7119 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
7125 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7126 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
7132 if (!add_dynamic_entry (DT_RELA, 0)
7133 || !add_dynamic_entry (DT_RELASZ, 0)
7134 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
7137 /* If any dynamic relocs apply to a read-only section,
7138 then we need a DT_TEXTREL entry. */
7139 if ((info->flags & DF_TEXTREL) == 0)
7140 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
7142 if ((info->flags & DF_TEXTREL) != 0)
7144 if (!add_dynamic_entry (DT_TEXTREL, 0))
7149 #undef add_dynamic_entry
7154 /* Determine the type of stub needed, if any, for a call. */
7156 static inline enum ppc_stub_type
7157 ppc_type_of_stub (asection *input_sec,
7158 const Elf_Internal_Rela *rel,
7159 struct ppc_link_hash_entry **hash,
7160 bfd_vma destination)
7162 struct ppc_link_hash_entry *h = *hash;
7164 bfd_vma branch_offset;
7165 bfd_vma max_branch_offset;
7166 enum elf_ppc64_reloc_type r_type;
7171 && h->oh->is_func_descriptor)
7174 if (h->elf.dynindx != -1)
7176 struct plt_entry *ent;
7178 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
7179 if (ent->addend == rel->r_addend
7180 && ent->plt.offset != (bfd_vma) -1)
7183 return ppc_stub_plt_call;
7187 if (!(h->elf.root.type == bfd_link_hash_defined
7188 || h->elf.root.type == bfd_link_hash_defweak)
7189 || h->elf.root.u.def.section->output_section == NULL)
7190 return ppc_stub_none;
7193 /* Determine where the call point is. */
7194 location = (input_sec->output_offset
7195 + input_sec->output_section->vma
7198 branch_offset = destination - location;
7199 r_type = ELF64_R_TYPE (rel->r_info);
7201 /* Determine if a long branch stub is needed. */
7202 max_branch_offset = 1 << 25;
7203 if (r_type != R_PPC64_REL24)
7204 max_branch_offset = 1 << 15;
7206 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7207 /* We need a stub. Figure out whether a long_branch or plt_branch
7209 return ppc_stub_long_branch;
7211 return ppc_stub_none;
7214 /* Build a .plt call stub. */
7216 static inline bfd_byte *
7217 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
7219 #define PPC_LO(v) ((v) & 0xffff)
7220 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7221 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7223 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
7224 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
7225 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7226 if (PPC_HA (offset + 8) != PPC_HA (offset))
7227 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7229 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7230 if (PPC_HA (offset + 8) != PPC_HA (offset))
7231 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7233 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7234 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7235 bfd_put_32 (obfd, BCTR, p), p += 4;
7240 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7242 struct ppc_stub_hash_entry *stub_entry;
7243 struct ppc_branch_hash_entry *br_entry;
7244 struct bfd_link_info *info;
7245 struct ppc_link_hash_table *htab;
7249 struct plt_entry *ent;
7253 /* Massage our args to the form they really have. */
7254 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7257 htab = ppc_hash_table (info);
7259 /* Make a note of the offset within the stubs for this entry. */
7260 stub_entry->stub_offset = stub_entry->stub_sec->size;
7261 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
7263 htab->stub_count[stub_entry->stub_type - 1] += 1;
7264 switch (stub_entry->stub_type)
7266 case ppc_stub_long_branch:
7267 case ppc_stub_long_branch_r2off:
7268 /* Branches are relative. This is where we are going to. */
7269 off = (stub_entry->target_value
7270 + stub_entry->target_section->output_offset
7271 + stub_entry->target_section->output_section->vma);
7273 /* And this is where we are coming from. */
7274 off -= (stub_entry->stub_offset
7275 + stub_entry->stub_sec->output_offset
7276 + stub_entry->stub_sec->output_section->vma);
7278 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7284 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7285 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7286 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7288 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7290 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7295 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
7297 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
7300 case ppc_stub_plt_branch:
7301 case ppc_stub_plt_branch_r2off:
7302 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7303 stub_entry->root.string + 9,
7305 if (br_entry == NULL)
7307 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
7308 stub_entry->root.string + 9);
7309 htab->stub_error = TRUE;
7313 off = (stub_entry->target_value
7314 + stub_entry->target_section->output_offset
7315 + stub_entry->target_section->output_section->vma);
7317 bfd_put_64 (htab->brlt->owner, off,
7318 htab->brlt->contents + br_entry->offset);
7322 /* Create a reloc for the branch lookup table entry. */
7323 Elf_Internal_Rela rela;
7326 rela.r_offset = (br_entry->offset
7327 + htab->brlt->output_offset
7328 + htab->brlt->output_section->vma);
7329 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7330 rela.r_addend = off;
7332 rl = htab->relbrlt->contents;
7333 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
7334 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
7337 off = (br_entry->offset
7338 + htab->brlt->output_offset
7339 + htab->brlt->output_section->vma
7340 - elf_gp (htab->brlt->output_section->owner)
7341 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7343 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
7345 (*_bfd_error_handler)
7346 (_("linkage table error against `%s'"),
7347 stub_entry->root.string);
7348 bfd_set_error (bfd_error_bad_value);
7349 htab->stub_error = TRUE;
7354 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
7356 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7358 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7365 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7366 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7367 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7369 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7371 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7373 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7375 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7379 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
7381 bfd_put_32 (htab->stub_bfd, BCTR, loc);
7384 case ppc_stub_plt_call:
7385 /* Do the best we can for shared libraries built without
7386 exporting ".foo" for each "foo". This can happen when symbol
7387 versioning scripts strip all bar a subset of symbols. */
7388 if (stub_entry->h->oh != NULL
7389 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
7390 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
7392 /* Point the symbol at the stub. There may be multiple stubs,
7393 we don't really care; The main thing is to make this sym
7394 defined somewhere. Maybe defining the symbol in the stub
7395 section is a silly idea. If we didn't do this, htab->top_id
7397 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
7398 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
7399 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
7402 /* Now build the stub. */
7404 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
7405 if (ent->addend == stub_entry->addend)
7407 off = ent->plt.offset;
7410 if (off >= (bfd_vma) -2)
7413 off &= ~ (bfd_vma) 1;
7414 off += (htab->plt->output_offset
7415 + htab->plt->output_section->vma
7416 - elf_gp (htab->plt->output_section->owner)
7417 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7419 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
7421 (*_bfd_error_handler)
7422 (_("linkage table error against `%s'"),
7423 stub_entry->h->elf.root.root.string);
7424 bfd_set_error (bfd_error_bad_value);
7425 htab->stub_error = TRUE;
7429 p = build_plt_stub (htab->stub_bfd, loc, off);
7438 stub_entry->stub_sec->size += size;
7440 if (htab->emit_stub_syms
7441 && !(stub_entry->stub_type == ppc_stub_plt_call
7442 && stub_entry->h->oh != NULL
7443 && stub_entry->h->oh->elf.root.type == bfd_link_hash_defined
7444 && stub_entry->h->oh->elf.root.u.def.section == stub_entry->stub_sec
7445 && stub_entry->h->oh->elf.root.u.def.value == stub_entry->stub_offset))
7447 struct elf_link_hash_entry *h;
7448 h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string,
7449 TRUE, FALSE, FALSE);
7452 if (h->root.type == bfd_link_hash_new)
7454 h->root.type = bfd_link_hash_defined;
7455 h->root.u.def.section = stub_entry->stub_sec;
7456 h->root.u.def.value = stub_entry->stub_offset;
7457 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
7458 | ELF_LINK_HASH_DEF_REGULAR
7459 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7460 | ELF_LINK_FORCED_LOCAL);
7467 /* As above, but don't actually build the stub. Just bump offset so
7468 we know stub section sizes, and select plt_branch stubs where
7469 long_branch stubs won't do. */
7472 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7474 struct ppc_stub_hash_entry *stub_entry;
7475 struct bfd_link_info *info;
7476 struct ppc_link_hash_table *htab;
7480 /* Massage our args to the form they really have. */
7481 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7484 htab = ppc_hash_table (info);
7486 if (stub_entry->stub_type == ppc_stub_plt_call)
7488 struct plt_entry *ent;
7490 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
7491 if (ent->addend == stub_entry->addend)
7493 off = ent->plt.offset & ~(bfd_vma) 1;
7496 if (off >= (bfd_vma) -2)
7498 off += (htab->plt->output_offset
7499 + htab->plt->output_section->vma
7500 - elf_gp (htab->plt->output_section->owner)
7501 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7503 size = PLT_CALL_STUB_SIZE;
7504 if (PPC_HA (off + 16) != PPC_HA (off))
7509 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
7511 off = (stub_entry->target_value
7512 + stub_entry->target_section->output_offset
7513 + stub_entry->target_section->output_section->vma);
7514 off -= (stub_entry->stub_sec->size
7515 + stub_entry->stub_sec->output_offset
7516 + stub_entry->stub_sec->output_section->vma);
7518 /* Reset the stub type from the plt variant in case we now
7519 can reach with a shorter stub. */
7520 if (stub_entry->stub_type >= ppc_stub_plt_branch)
7521 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
7524 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
7530 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
7531 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
7533 struct ppc_branch_hash_entry *br_entry;
7535 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7536 stub_entry->root.string + 9,
7538 if (br_entry == NULL)
7540 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
7541 stub_entry->root.string + 9);
7542 htab->stub_error = TRUE;
7546 if (br_entry->iter != htab->stub_iteration)
7548 br_entry->iter = htab->stub_iteration;
7549 br_entry->offset = htab->brlt->size;
7550 htab->brlt->size += 8;
7553 htab->relbrlt->size += sizeof (Elf64_External_Rela);
7556 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
7558 if (stub_entry->stub_type != ppc_stub_plt_branch)
7563 stub_entry->stub_sec->size += size;
7567 /* Set up various things so that we can make a list of input sections
7568 for each output section included in the link. Returns -1 on error,
7569 0 when no stubs will be needed, and 1 on success. */
7572 ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
7575 int top_id, top_index, id;
7577 asection **input_list;
7579 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7581 if (htab->brlt == NULL)
7584 /* Find the top input section id. */
7585 for (input_bfd = info->input_bfds, top_id = 3;
7587 input_bfd = input_bfd->link_next)
7589 for (section = input_bfd->sections;
7591 section = section->next)
7593 if (top_id < section->id)
7594 top_id = section->id;
7598 htab->top_id = top_id;
7599 amt = sizeof (struct map_stub) * (top_id + 1);
7600 htab->stub_group = bfd_zmalloc (amt);
7601 if (htab->stub_group == NULL)
7604 /* Set toc_off for com, und, abs and ind sections. */
7605 for (id = 0; id < 3; id++)
7606 htab->stub_group[id].toc_off = TOC_BASE_OFF;
7608 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
7610 /* We can't use output_bfd->section_count here to find the top output
7611 section index as some sections may have been removed, and
7612 _bfd_strip_section_from_output doesn't renumber the indices. */
7613 for (section = output_bfd->sections, top_index = 0;
7615 section = section->next)
7617 if (top_index < section->index)
7618 top_index = section->index;
7621 htab->top_index = top_index;
7622 amt = sizeof (asection *) * (top_index + 1);
7623 input_list = bfd_zmalloc (amt);
7624 htab->input_list = input_list;
7625 if (input_list == NULL)
7631 /* The linker repeatedly calls this function for each TOC input section
7632 and linker generated GOT section. Group input bfds such that the toc
7633 within a group is less than 64k in size. Will break with cute linker
7634 scripts that play games with dot in the output toc section. */
7637 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
7639 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7640 bfd_vma addr = isec->output_offset + isec->output_section->vma;
7641 bfd_vma off = addr - htab->toc_curr;
7643 if (off + isec->size > 0x10000)
7644 htab->toc_curr = addr;
7646 elf_gp (isec->owner) = (htab->toc_curr
7647 - elf_gp (isec->output_section->owner)
7651 /* Called after the last call to the above function. */
7654 ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
7655 struct bfd_link_info *info)
7657 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7659 /* toc_curr tracks the TOC offset used for code sections below in
7660 ppc64_elf_next_input_section. Start off at 0x8000. */
7661 htab->toc_curr = TOC_BASE_OFF;
7664 /* No toc references were found in ISEC. If the code in ISEC makes no
7665 calls, then there's no need to use toc adjusting stubs when branching
7666 into ISEC. Actually, indirect calls from ISEC are OK as they will
7670 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
7677 /* We know none of our code bearing sections will need toc stubs. */
7678 if ((isec->flags & SEC_LINKER_CREATED) != 0)
7681 if (isec->size == 0)
7684 /* Hack for linux kernel. .fixup contains branches, but only back to
7685 the function that hit an exception. */
7686 branch_ok = strcmp (isec->name, ".fixup") == 0;
7688 contents = elf_section_data (isec)->this_hdr.contents;
7689 if (contents == NULL)
7691 if (!bfd_malloc_and_get_section (isec->owner, isec, &contents))
7693 if (contents != NULL)
7697 if (info->keep_memory)
7698 elf_section_data (isec)->this_hdr.contents = contents;
7701 /* Code scan, because we don't necessarily have relocs on calls to
7702 static functions. */
7704 for (i = 0; i < isec->size; i += 4)
7706 unsigned long insn = bfd_get_32 (isec->owner, contents + i);
7707 /* Is this a branch? */
7708 if ((insn & (0x3f << 26)) == (18 << 26)
7709 /* If branch and link, it's a function call. */
7711 /* Sibling calls use a plain branch. I don't know a way
7712 of deciding whether a branch is really a sibling call. */
7720 if (elf_section_data (isec)->this_hdr.contents != contents)
7725 /* The linker repeatedly calls this function for each input section,
7726 in the order that input sections are linked into output sections.
7727 Build lists of input sections to determine groupings between which
7728 we may insert linker stubs. */
7731 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
7733 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7736 if ((isec->output_section->flags & SEC_CODE) != 0
7737 && isec->output_section->index <= htab->top_index)
7739 asection **list = htab->input_list + isec->output_section->index;
7740 /* Steal the link_sec pointer for our list. */
7741 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
7742 /* This happens to make the list in reverse order,
7743 which is what we want. */
7744 PREV_SEC (isec) = *list;
7748 /* If a code section has a function that uses the TOC then we need
7749 to use the right TOC (obviously). Also, make sure that .opd gets
7750 the correct TOC value for R_PPC64_TOC relocs that don't have or
7751 can't find their function symbol (shouldn't ever happen now). */
7752 if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
7754 if (elf_gp (isec->owner) != 0)
7755 htab->toc_curr = elf_gp (isec->owner);
7757 else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
7760 isec->has_gp_reloc = ret;
7762 /* Functions that don't use the TOC can belong in any TOC group.
7763 Use the last TOC base. This happens to make _init and _fini
7765 htab->stub_group[isec->id].toc_off = htab->toc_curr;
7769 /* See whether we can group stub sections together. Grouping stub
7770 sections may result in fewer stubs. More importantly, we need to
7771 put all .init* and .fini* stubs at the beginning of the .init or
7772 .fini output sections respectively, because glibc splits the
7773 _init and _fini functions into multiple parts. Putting a stub in
7774 the middle of a function is not a good idea. */
7777 group_sections (struct ppc_link_hash_table *htab,
7778 bfd_size_type stub_group_size,
7779 bfd_boolean stubs_always_before_branch)
7781 asection **list = htab->input_list + htab->top_index;
7784 asection *tail = *list;
7785 while (tail != NULL)
7789 bfd_size_type total;
7790 bfd_boolean big_sec;
7795 big_sec = total >= stub_group_size;
7796 curr_toc = htab->stub_group[tail->id].toc_off;
7798 while ((prev = PREV_SEC (curr)) != NULL
7799 && ((total += curr->output_offset - prev->output_offset)
7801 && htab->stub_group[prev->id].toc_off == curr_toc)
7804 /* OK, the size from the start of CURR to the end is less
7805 than stub_group_size and thus can be handled by one stub
7806 section. (or the tail section is itself larger than
7807 stub_group_size, in which case we may be toast.) We
7808 should really be keeping track of the total size of stubs
7809 added here, as stubs contribute to the final output
7810 section size. That's a little tricky, and this way will
7811 only break if stubs added make the total size more than
7812 2^25, ie. for the default stub_group_size, if stubs total
7813 more than 2097152 bytes, or nearly 75000 plt call stubs. */
7816 prev = PREV_SEC (tail);
7817 /* Set up this stub group. */
7818 htab->stub_group[tail->id].link_sec = curr;
7820 while (tail != curr && (tail = prev) != NULL);
7822 /* But wait, there's more! Input sections up to stub_group_size
7823 bytes before the stub section can be handled by it too.
7824 Don't do this if we have a really large section after the
7825 stubs, as adding more stubs increases the chance that
7826 branches may not reach into the stub section. */
7827 if (!stubs_always_before_branch && !big_sec)
7831 && ((total += tail->output_offset - prev->output_offset)
7833 && htab->stub_group[prev->id].toc_off == curr_toc)
7836 prev = PREV_SEC (tail);
7837 htab->stub_group[tail->id].link_sec = curr;
7843 while (list-- != htab->input_list);
7844 free (htab->input_list);
7848 /* Determine and set the size of the stub section for a final link.
7850 The basic idea here is to examine all the relocations looking for
7851 PC-relative calls to a target that is unreachable with a "bl"
7855 ppc64_elf_size_stubs (bfd *output_bfd,
7856 struct bfd_link_info *info,
7857 bfd_signed_vma group_size,
7858 asection *(*add_stub_section) (const char *, asection *),
7859 void (*layout_sections_again) (void))
7861 bfd_size_type stub_group_size;
7862 bfd_boolean stubs_always_before_branch;
7863 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7865 /* Stash our params away. */
7866 htab->add_stub_section = add_stub_section;
7867 htab->layout_sections_again = layout_sections_again;
7868 stubs_always_before_branch = group_size < 0;
7870 stub_group_size = -group_size;
7872 stub_group_size = group_size;
7873 if (stub_group_size == 1)
7875 /* Default values. */
7876 if (stubs_always_before_branch)
7878 stub_group_size = 0x1e00000;
7879 if (htab->has_14bit_branch)
7880 stub_group_size = 0x7800;
7884 stub_group_size = 0x1c00000;
7885 if (htab->has_14bit_branch)
7886 stub_group_size = 0x7000;
7890 group_sections (htab, stub_group_size, stubs_always_before_branch);
7895 unsigned int bfd_indx;
7897 bfd_boolean stub_changed;
7899 htab->stub_iteration += 1;
7900 stub_changed = FALSE;
7902 for (input_bfd = info->input_bfds, bfd_indx = 0;
7904 input_bfd = input_bfd->link_next, bfd_indx++)
7906 Elf_Internal_Shdr *symtab_hdr;
7908 Elf_Internal_Sym *local_syms = NULL;
7910 /* We'll need the symbol table in a second. */
7911 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
7912 if (symtab_hdr->sh_info == 0)
7915 /* Walk over each section attached to the input bfd. */
7916 for (section = input_bfd->sections;
7918 section = section->next)
7920 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
7922 /* If there aren't any relocs, then there's nothing more
7924 if ((section->flags & SEC_RELOC) == 0
7925 || section->reloc_count == 0)
7928 /* If this section is a link-once section that will be
7929 discarded, then don't create any stubs. */
7930 if (section->output_section == NULL
7931 || section->output_section->owner != output_bfd)
7934 /* Get the relocs. */
7936 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
7938 if (internal_relocs == NULL)
7939 goto error_ret_free_local;
7941 /* Now examine each relocation. */
7942 irela = internal_relocs;
7943 irelaend = irela + section->reloc_count;
7944 for (; irela < irelaend; irela++)
7946 enum elf_ppc64_reloc_type r_type;
7947 unsigned int r_indx;
7948 enum ppc_stub_type stub_type;
7949 struct ppc_stub_hash_entry *stub_entry;
7950 asection *sym_sec, *code_sec;
7952 bfd_vma destination;
7953 bfd_boolean ok_dest;
7954 struct ppc_link_hash_entry *hash;
7955 struct ppc_link_hash_entry *fdh;
7956 struct elf_link_hash_entry *h;
7957 Elf_Internal_Sym *sym;
7959 const asection *id_sec;
7962 r_type = ELF64_R_TYPE (irela->r_info);
7963 r_indx = ELF64_R_SYM (irela->r_info);
7965 if (r_type >= R_PPC64_max)
7967 bfd_set_error (bfd_error_bad_value);
7968 goto error_ret_free_internal;
7971 /* Only look for stubs on branch instructions. */
7972 if (r_type != R_PPC64_REL24
7973 && r_type != R_PPC64_REL14
7974 && r_type != R_PPC64_REL14_BRTAKEN
7975 && r_type != R_PPC64_REL14_BRNTAKEN)
7978 /* Now determine the call target, its name, value,
7980 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7982 goto error_ret_free_internal;
7983 hash = (struct ppc_link_hash_entry *) h;
7989 sym_value = sym->st_value;
7995 /* Recognise an old ABI func code entry sym, and
7996 use the func descriptor sym instead. */
7997 if (hash->elf.root.type == bfd_link_hash_undefweak
7998 && hash->elf.root.root.string[0] == '.'
7999 && (fdh = get_fdh (hash, htab)) != NULL)
8001 if (fdh->elf.root.type == bfd_link_hash_defined
8002 || fdh->elf.root.type == bfd_link_hash_defweak)
8004 sym_sec = fdh->elf.root.u.def.section;
8005 sym_value = fdh->elf.root.u.def.value;
8006 if (sym_sec->output_section != NULL)
8012 else if (hash->elf.root.type == bfd_link_hash_defined
8013 || hash->elf.root.type == bfd_link_hash_defweak)
8015 sym_value = hash->elf.root.u.def.value;
8016 if (sym_sec->output_section != NULL)
8019 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8021 else if (hash->elf.root.type == bfd_link_hash_undefined)
8025 bfd_set_error (bfd_error_bad_value);
8026 goto error_ret_free_internal;
8033 sym_value += irela->r_addend;
8034 destination = (sym_value
8035 + sym_sec->output_offset
8036 + sym_sec->output_section->vma);
8040 opd_adjust = get_opd_info (sym_sec);
8041 if (opd_adjust != NULL)
8047 long adjust = opd_adjust[sym_value / 8];
8050 sym_value += adjust;
8052 dest = opd_entry_value (sym_sec, sym_value,
8053 &code_sec, &sym_value);
8054 if (dest != (bfd_vma) -1)
8059 /* Fixup old ABI sym to point at code
8061 hash->elf.root.type = bfd_link_hash_defweak;
8062 hash->elf.root.u.def.section = code_sec;
8063 hash->elf.root.u.def.value = sym_value;
8068 /* Determine what (if any) linker stub is needed. */
8069 stub_type = ppc_type_of_stub (section, irela, &hash,
8072 if (stub_type != ppc_stub_plt_call)
8074 /* Check whether we need a TOC adjusting stub.
8075 Since the linker pastes together pieces from
8076 different object files when creating the
8077 _init and _fini functions, it may be that a
8078 call to what looks like a local sym is in
8079 fact a call needing a TOC adjustment. */
8080 if (code_sec != NULL
8081 && code_sec->output_section != NULL
8082 && (htab->stub_group[code_sec->id].toc_off
8083 != htab->stub_group[section->id].toc_off)
8084 && code_sec->has_gp_reloc
8085 && section->has_gp_reloc)
8086 stub_type = ppc_stub_long_branch_r2off;
8089 if (stub_type == ppc_stub_none)
8092 /* __tls_get_addr calls might be eliminated. */
8093 if (stub_type != ppc_stub_plt_call
8095 && (hash == htab->tls_get_addr
8096 || hash == htab->tls_get_addr_fd)
8097 && section->has_tls_reloc
8098 && irela != internal_relocs)
8103 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
8104 irela - 1, input_bfd))
8105 goto error_ret_free_internal;
8110 /* Support for grouping stub sections. */
8111 id_sec = htab->stub_group[section->id].link_sec;
8113 /* Get the name of this stub. */
8114 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
8116 goto error_ret_free_internal;
8118 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
8119 stub_name, FALSE, FALSE);
8120 if (stub_entry != NULL)
8122 /* The proper stub has already been created. */
8127 stub_entry = ppc_add_stub (stub_name, section, htab);
8128 if (stub_entry == NULL)
8131 error_ret_free_internal:
8132 if (elf_section_data (section)->relocs == NULL)
8133 free (internal_relocs);
8134 error_ret_free_local:
8135 if (local_syms != NULL
8136 && (symtab_hdr->contents
8137 != (unsigned char *) local_syms))
8142 stub_entry->stub_type = stub_type;
8143 stub_entry->target_value = sym_value;
8144 stub_entry->target_section = code_sec;
8145 stub_entry->h = hash;
8146 stub_entry->addend = irela->r_addend;
8147 stub_changed = TRUE;
8150 /* We're done with the internal relocs, free them. */
8151 if (elf_section_data (section)->relocs != internal_relocs)
8152 free (internal_relocs);
8155 if (local_syms != NULL
8156 && symtab_hdr->contents != (unsigned char *) local_syms)
8158 if (!info->keep_memory)
8161 symtab_hdr->contents = (unsigned char *) local_syms;
8168 /* OK, we've added some stubs. Find out the new size of the
8170 for (stub_sec = htab->stub_bfd->sections;
8172 stub_sec = stub_sec->next)
8173 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
8176 htab->brlt->size = 0;
8178 htab->relbrlt->size = 0;
8180 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
8182 /* Ask the linker to do its stuff. */
8183 (*htab->layout_sections_again) ();
8186 /* It would be nice to strip .branch_lt from the output if the
8187 section is empty, but it's too late. If we strip sections here,
8188 the dynamic symbol table is corrupted since the section symbol
8189 for the stripped section isn't written. */
8194 /* Called after we have determined section placement. If sections
8195 move, we'll be called again. Provide a value for TOCstart. */
8198 ppc64_elf_toc (bfd *obfd)
8203 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8204 order. The TOC starts where the first of these sections starts. */
8205 s = bfd_get_section_by_name (obfd, ".got");
8207 s = bfd_get_section_by_name (obfd, ".toc");
8209 s = bfd_get_section_by_name (obfd, ".tocbss");
8211 s = bfd_get_section_by_name (obfd, ".plt");
8214 /* This may happen for
8215 o references to TOC base (SYM@toc / TOC[tc0]) without a
8218 o --gc-sections and empty TOC sections
8220 FIXME: Warn user? */
8222 /* Look for a likely section. We probably won't even be
8224 for (s = obfd->sections; s != NULL; s = s->next)
8225 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
8226 == (SEC_ALLOC | SEC_SMALL_DATA))
8229 for (s = obfd->sections; s != NULL; s = s->next)
8230 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
8231 == (SEC_ALLOC | SEC_SMALL_DATA))
8234 for (s = obfd->sections; s != NULL; s = s->next)
8235 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
8238 for (s = obfd->sections; s != NULL; s = s->next)
8239 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
8245 TOCstart = s->output_section->vma + s->output_offset;
8250 /* Build all the stubs associated with the current output file.
8251 The stubs are kept in a hash table attached to the main linker
8252 hash table. This function is called via gldelf64ppc_finish. */
8255 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
8256 struct bfd_link_info *info,
8259 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8262 int stub_sec_count = 0;
8264 htab->emit_stub_syms = emit_stub_syms;
8266 /* Allocate memory to hold the linker stubs. */
8267 for (stub_sec = htab->stub_bfd->sections;
8269 stub_sec = stub_sec->next)
8270 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
8271 && stub_sec->size != 0)
8273 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
8274 if (stub_sec->contents == NULL)
8276 /* We want to check that built size is the same as calculated
8277 size. rawsize is a convenient location to use. */
8278 stub_sec->rawsize = stub_sec->size;
8282 if (htab->plt != NULL)
8287 /* Build the .glink plt call stub. */
8288 plt0 = (htab->plt->output_section->vma
8289 + htab->plt->output_offset
8290 - (htab->glink->output_section->vma
8291 + htab->glink->output_offset
8292 + GLINK_CALL_STUB_SIZE));
8293 if (plt0 + 0x80008000 > 0xffffffff)
8295 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
8296 bfd_set_error (bfd_error_bad_value);
8300 if (htab->emit_stub_syms)
8302 struct elf_link_hash_entry *h;
8303 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
8306 if (h->root.type == bfd_link_hash_new)
8308 h->root.type = bfd_link_hash_defined;
8309 h->root.u.def.section = htab->glink;
8310 h->root.u.def.value = 0;
8311 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
8312 | ELF_LINK_HASH_DEF_REGULAR
8313 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
8314 | ELF_LINK_FORCED_LOCAL);
8317 p = htab->glink->contents;
8318 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
8320 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
8322 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
8324 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
8326 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
8328 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
8330 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
8332 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
8334 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
8336 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
8338 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
8340 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
8342 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
8344 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
8346 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
8348 bfd_put_32 (htab->glink->owner, BCTR, p);
8351 /* Build the .glink lazy link call stubs. */
8353 while (p < htab->glink->contents + htab->glink->size)
8357 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
8362 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
8364 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
8367 bfd_put_32 (htab->glink->owner,
8368 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
8372 htab->glink->rawsize = p - htab->glink->contents;
8375 if (htab->brlt->size != 0)
8377 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
8379 if (htab->brlt->contents == NULL)
8382 if (info->shared && htab->relbrlt->size != 0)
8384 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
8385 htab->relbrlt->size);
8386 if (htab->relbrlt->contents == NULL)
8390 /* Build the stubs as directed by the stub hash table. */
8391 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
8393 for (stub_sec = htab->stub_bfd->sections;
8395 stub_sec = stub_sec->next)
8396 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
8398 stub_sec_count += 1;
8399 if (stub_sec->rawsize != stub_sec->size)
8403 if (stub_sec != NULL
8404 || htab->glink->rawsize != htab->glink->size)
8406 htab->stub_error = TRUE;
8407 (*_bfd_error_handler) (_("stubs don't match calculated size"));
8410 if (htab->stub_error)
8415 *stats = bfd_malloc (500);
8419 sprintf (*stats, _("linker stubs in %u groups\n"
8422 " long branch %lu\n"
8423 " long toc adj %lu\n"
8426 htab->stub_count[ppc_stub_long_branch - 1],
8427 htab->stub_count[ppc_stub_long_branch_r2off - 1],
8428 htab->stub_count[ppc_stub_plt_branch - 1],
8429 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
8430 htab->stub_count[ppc_stub_plt_call - 1]);
8435 /* This function undoes the changes made by add_symbol_adjust. */
8438 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
8440 struct ppc_link_hash_entry *eh;
8442 if (h->root.type == bfd_link_hash_indirect)
8445 if (h->root.type == bfd_link_hash_warning)
8446 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8448 eh = (struct ppc_link_hash_entry *) h;
8449 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
8452 eh->elf.root.type = bfd_link_hash_undefined;
8457 ppc64_elf_restore_symbols (struct bfd_link_info *info)
8459 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8460 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
8463 /* The RELOCATE_SECTION function is called by the ELF backend linker
8464 to handle the relocations for a section.
8466 The relocs are always passed as Rela structures; if the section
8467 actually uses Rel structures, the r_addend field will always be
8470 This function is responsible for adjust the section contents as
8471 necessary, and (if using Rela relocs and generating a
8472 relocatable output file) adjusting the reloc addend as
8475 This function does not have to worry about setting the reloc
8476 address or the reloc symbol index.
8478 LOCAL_SYMS is a pointer to the swapped in local symbols.
8480 LOCAL_SECTIONS is an array giving the section in the input file
8481 corresponding to the st_shndx field of each local symbol.
8483 The global hash table entry for the global symbols can be found
8484 via elf_sym_hashes (input_bfd).
8486 When generating relocatable output, this function must handle
8487 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
8488 going to be the section symbol corresponding to the output
8489 section, which means that the addend must be adjusted
8493 ppc64_elf_relocate_section (bfd *output_bfd,
8494 struct bfd_link_info *info,
8496 asection *input_section,
8498 Elf_Internal_Rela *relocs,
8499 Elf_Internal_Sym *local_syms,
8500 asection **local_sections)
8502 struct ppc_link_hash_table *htab;
8503 Elf_Internal_Shdr *symtab_hdr;
8504 struct elf_link_hash_entry **sym_hashes;
8505 Elf_Internal_Rela *rel;
8506 Elf_Internal_Rela *relend;
8507 Elf_Internal_Rela outrel;
8509 struct got_entry **local_got_ents;
8511 bfd_boolean ret = TRUE;
8513 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
8514 bfd_boolean is_power4 = FALSE;
8516 if (info->relocatable)
8519 /* Initialize howto table if needed. */
8520 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8523 htab = ppc_hash_table (info);
8524 local_got_ents = elf_local_got_ents (input_bfd);
8525 TOCstart = elf_gp (output_bfd);
8526 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8527 sym_hashes = elf_sym_hashes (input_bfd);
8528 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
8531 relend = relocs + input_section->reloc_count;
8532 for (; rel < relend; rel++)
8534 enum elf_ppc64_reloc_type r_type;
8536 bfd_reloc_status_type r;
8537 Elf_Internal_Sym *sym;
8539 struct elf_link_hash_entry *h_elf;
8540 struct ppc_link_hash_entry *h;
8541 struct ppc_link_hash_entry *fdh;
8542 const char *sym_name;
8543 unsigned long r_symndx, toc_symndx;
8544 char tls_mask, tls_gd, tls_type;
8547 bfd_boolean unresolved_reloc;
8549 unsigned long insn, mask;
8550 struct ppc_stub_hash_entry *stub_entry;
8551 bfd_vma max_br_offset;
8554 r_type = ELF64_R_TYPE (rel->r_info);
8555 r_symndx = ELF64_R_SYM (rel->r_info);
8557 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
8558 symbol of the previous ADDR64 reloc. The symbol gives us the
8559 proper TOC base to use. */
8560 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
8562 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
8564 r_symndx = ELF64_R_SYM (rel[-1].r_info);
8570 unresolved_reloc = FALSE;
8573 if (r_symndx < symtab_hdr->sh_info)
8575 /* It's a local symbol. */
8578 sym = local_syms + r_symndx;
8579 sec = local_sections[r_symndx];
8580 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
8581 sym_type = ELF64_ST_TYPE (sym->st_info);
8582 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
8583 opd_adjust = get_opd_info (sec);
8584 if (opd_adjust != NULL)
8586 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
8590 relocation += adjust;
8595 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
8596 r_symndx, symtab_hdr, sym_hashes,
8597 h_elf, sec, relocation,
8598 unresolved_reloc, warned);
8599 sym_name = h_elf->root.root.string;
8600 sym_type = h_elf->type;
8602 h = (struct ppc_link_hash_entry *) h_elf;
8604 /* TLS optimizations. Replace instruction sequences and relocs
8605 based on information we collected in tls_optimize. We edit
8606 RELOCS so that --emit-relocs will output something sensible
8607 for the final instruction stream. */
8611 if (IS_PPC64_TLS_RELOC (r_type))
8614 tls_mask = h->tls_mask;
8615 else if (local_got_ents != NULL)
8618 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
8619 tls_mask = lgot_masks[r_symndx];
8621 if (tls_mask == 0 && r_type == R_PPC64_TLS)
8623 /* Check for toc tls entries. */
8626 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
8631 tls_mask = *toc_tls;
8635 /* Check that tls relocs are used with tls syms, and non-tls
8636 relocs are used with non-tls syms. */
8638 && r_type != R_PPC64_NONE
8640 || h->elf.root.type == bfd_link_hash_defined
8641 || h->elf.root.type == bfd_link_hash_defweak)
8642 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
8644 if (r_type == R_PPC64_TLS && tls_mask != 0)
8645 /* R_PPC64_TLS is OK against a symbol in the TOC. */
8648 (*_bfd_error_handler)
8649 (sym_type == STT_TLS
8650 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
8651 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
8654 (long) rel->r_offset,
8655 ppc64_elf_howto_table[r_type]->name,
8659 /* Ensure reloc mapping code below stays sane. */
8660 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
8661 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
8662 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
8663 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
8664 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
8665 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
8666 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
8667 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
8668 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
8669 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
8678 case R_PPC64_TOC16_LO:
8679 case R_PPC64_TOC16_DS:
8680 case R_PPC64_TOC16_LO_DS:
8682 /* Check for toc tls entries. */
8686 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
8693 tls_mask = *toc_tls;
8694 if (r_type == R_PPC64_TOC16_DS
8695 || r_type == R_PPC64_TOC16_LO_DS)
8698 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
8703 /* If we found a GD reloc pair, then we might be
8704 doing a GD->IE transition. */
8707 tls_gd = TLS_TPRELGD;
8708 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
8709 goto tls_get_addr_check;
8711 else if (retval == 3)
8713 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
8714 goto tls_get_addr_check;
8721 case R_PPC64_GOT_TPREL16_DS:
8722 case R_PPC64_GOT_TPREL16_LO_DS:
8724 && (tls_mask & TLS_TPREL) == 0)
8727 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
8729 insn |= 0x3c0d0000; /* addis 0,13,0 */
8730 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
8731 r_type = R_PPC64_TPREL16_HA;
8732 if (toc_symndx != 0)
8734 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
8735 /* We changed the symbol. Start over in order to
8736 get h, sym, sec etc. right. */
8741 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8747 && (tls_mask & TLS_TPREL) == 0)
8750 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8751 if ((insn & ((0x3f << 26) | (31 << 11)))
8752 == ((31 << 26) | (13 << 11)))
8753 rtra = insn & ((1 << 26) - (1 << 16));
8754 else if ((insn & ((0x3f << 26) | (31 << 16)))
8755 == ((31 << 26) | (13 << 16)))
8756 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
8759 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
8762 else if ((insn & (31 << 1)) == 23 << 1
8763 && ((insn & (31 << 6)) < 14 << 6
8764 || ((insn & (31 << 6)) >= 16 << 6
8765 && (insn & (31 << 6)) < 24 << 6)))
8766 /* load and store indexed -> dform. */
8767 insn = (32 | ((insn >> 6) & 31)) << 26;
8768 else if ((insn & (31 << 1)) == 21 << 1
8769 && (insn & (0x1a << 6)) == 0)
8770 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
8771 insn = (((58 | ((insn >> 6) & 4)) << 26)
8772 | ((insn >> 6) & 1));
8773 else if ((insn & (31 << 1)) == 21 << 1
8774 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
8776 insn = (58 << 26) | 2;
8780 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8781 /* Was PPC64_TLS which sits on insn boundary, now
8782 PPC64_TPREL16_LO which is at insn+2. */
8784 r_type = R_PPC64_TPREL16_LO;
8785 if (toc_symndx != 0)
8787 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
8788 /* We changed the symbol. Start over in order to
8789 get h, sym, sec etc. right. */
8794 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8798 case R_PPC64_GOT_TLSGD16_HI:
8799 case R_PPC64_GOT_TLSGD16_HA:
8800 tls_gd = TLS_TPRELGD;
8801 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
8805 case R_PPC64_GOT_TLSLD16_HI:
8806 case R_PPC64_GOT_TLSLD16_HA:
8807 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
8810 if ((tls_mask & tls_gd) != 0)
8811 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
8812 + R_PPC64_GOT_TPREL16_DS);
8815 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
8817 r_type = R_PPC64_NONE;
8819 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8823 case R_PPC64_GOT_TLSGD16:
8824 case R_PPC64_GOT_TLSGD16_LO:
8825 tls_gd = TLS_TPRELGD;
8826 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
8827 goto tls_get_addr_check;
8830 case R_PPC64_GOT_TLSLD16:
8831 case R_PPC64_GOT_TLSLD16_LO:
8832 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
8835 if (rel + 1 < relend)
8837 enum elf_ppc64_reloc_type r_type2;
8838 unsigned long r_symndx2;
8839 struct elf_link_hash_entry *h2;
8840 bfd_vma insn1, insn2, insn3;
8843 /* The next instruction should be a call to
8844 __tls_get_addr. Peek at the reloc to be sure. */
8845 r_type2 = ELF64_R_TYPE (rel[1].r_info);
8846 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
8847 if (r_symndx2 < symtab_hdr->sh_info
8848 || (r_type2 != R_PPC64_REL14
8849 && r_type2 != R_PPC64_REL14_BRTAKEN
8850 && r_type2 != R_PPC64_REL14_BRNTAKEN
8851 && r_type2 != R_PPC64_REL24))
8854 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
8855 while (h2->root.type == bfd_link_hash_indirect
8856 || h2->root.type == bfd_link_hash_warning)
8857 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8858 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
8859 && h2 != &htab->tls_get_addr_fd->elf))
8862 /* OK, it checks out. Replace the call. */
8863 offset = rel[1].r_offset;
8864 insn1 = bfd_get_32 (output_bfd,
8865 contents + rel->r_offset - 2);
8866 insn3 = bfd_get_32 (output_bfd,
8867 contents + offset + 4);
8868 if ((tls_mask & tls_gd) != 0)
8871 insn1 &= (1 << 26) - (1 << 2);
8872 insn1 |= 58 << 26; /* ld */
8873 insn2 = 0x7c636a14; /* add 3,3,13 */
8874 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
8875 if ((tls_mask & TLS_EXPLICIT) == 0)
8876 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
8877 + R_PPC64_GOT_TPREL16_DS);
8879 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
8880 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8885 insn1 = 0x3c6d0000; /* addis 3,13,0 */
8886 insn2 = 0x38630000; /* addi 3,3,0 */
8889 /* Was an LD reloc. */
8891 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8892 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8894 else if (toc_symndx != 0)
8895 r_symndx = toc_symndx;
8896 r_type = R_PPC64_TPREL16_HA;
8897 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8898 rel[1].r_info = ELF64_R_INFO (r_symndx,
8899 R_PPC64_TPREL16_LO);
8900 rel[1].r_offset += 2;
8903 || insn3 == CROR_151515 || insn3 == CROR_313131)
8907 rel[1].r_offset += 4;
8909 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
8910 bfd_put_32 (output_bfd, insn2, contents + offset);
8911 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
8912 if (tls_gd == 0 || toc_symndx != 0)
8914 /* We changed the symbol. Start over in order
8915 to get h, sym, sec etc. right. */
8923 case R_PPC64_DTPMOD64:
8924 if (rel + 1 < relend
8925 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
8926 && rel[1].r_offset == rel->r_offset + 8)
8928 if ((tls_mask & TLS_GD) == 0)
8930 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
8931 if ((tls_mask & TLS_TPRELGD) != 0)
8932 r_type = R_PPC64_TPREL64;
8935 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
8936 r_type = R_PPC64_NONE;
8938 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8943 if ((tls_mask & TLS_LD) == 0)
8945 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
8946 r_type = R_PPC64_NONE;
8947 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8952 case R_PPC64_TPREL64:
8953 if ((tls_mask & TLS_TPREL) == 0)
8955 r_type = R_PPC64_NONE;
8956 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8961 /* Handle other relocations that tweak non-addend part of insn. */
8963 max_br_offset = 1 << 25;
8964 addend = rel->r_addend;
8970 /* Branch taken prediction relocations. */
8971 case R_PPC64_ADDR14_BRTAKEN:
8972 case R_PPC64_REL14_BRTAKEN:
8973 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
8976 /* Branch not taken prediction relocations. */
8977 case R_PPC64_ADDR14_BRNTAKEN:
8978 case R_PPC64_REL14_BRNTAKEN:
8979 insn |= bfd_get_32 (output_bfd,
8980 contents + rel->r_offset) & ~(0x01 << 21);
8984 max_br_offset = 1 << 15;
8988 /* Calls to functions with a different TOC, such as calls to
8989 shared objects, need to alter the TOC pointer. This is
8990 done using a linkage stub. A REL24 branching to these
8991 linkage stubs needs to be followed by a nop, as the nop
8992 will be replaced with an instruction to restore the TOC
8997 && (((fdh = h->oh) != NULL
8998 && fdh->elf.plt.plist != NULL)
8999 || (fdh = h)->elf.plt.plist != NULL))
9001 && sec->output_section != NULL
9002 && sec->id <= htab->top_id
9003 && (htab->stub_group[sec->id].toc_off
9004 != htab->stub_group[input_section->id].toc_off)))
9005 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
9007 && (stub_entry->stub_type == ppc_stub_plt_call
9008 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9009 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
9011 bfd_boolean can_plt_call = FALSE;
9013 if (rel->r_offset + 8 <= input_section->size)
9016 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9018 || nop == CROR_151515 || nop == CROR_313131)
9020 bfd_put_32 (input_bfd, LD_R2_40R1,
9021 contents + rel->r_offset + 4);
9022 can_plt_call = TRUE;
9028 if (stub_entry->stub_type == ppc_stub_plt_call)
9030 /* If this is a plain branch rather than a branch
9031 and link, don't require a nop. */
9033 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9035 can_plt_call = TRUE;
9038 && strcmp (h->elf.root.root.string,
9039 ".__libc_start_main") == 0)
9041 /* Allow crt1 branch to go via a toc adjusting stub. */
9042 can_plt_call = TRUE;
9046 if (strcmp (input_section->output_section->name,
9048 || strcmp (input_section->output_section->name,
9050 (*_bfd_error_handler)
9051 (_("%B(%A+0x%lx): automatic multiple TOCs "
9052 "not supported using your crt files; "
9053 "recompile with -mminimal-toc or upgrade gcc"),
9056 (long) rel->r_offset);
9058 (*_bfd_error_handler)
9059 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9060 "does not allow automatic multiple TOCs; "
9061 "recompile with -mminimal-toc or "
9062 "-fno-optimize-sibling-calls, "
9063 "or make `%s' extern"),
9066 (long) rel->r_offset,
9069 bfd_set_error (bfd_error_bad_value);
9075 && stub_entry->stub_type == ppc_stub_plt_call)
9076 unresolved_reloc = FALSE;
9079 if (stub_entry == NULL
9080 && get_opd_info (sec) != NULL)
9082 /* The branch destination is the value of the opd entry. */
9083 bfd_vma off = (relocation - sec->output_section->vma
9084 - sec->output_offset + rel->r_addend);
9085 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9086 if (dest != (bfd_vma) -1)
9093 /* If the branch is out of reach we ought to have a long
9095 from = (rel->r_offset
9096 + input_section->output_offset
9097 + input_section->output_section->vma);
9099 if (stub_entry == NULL
9100 && (relocation + rel->r_addend - from + max_br_offset
9101 >= 2 * max_br_offset)
9102 && r_type != R_PPC64_ADDR14_BRTAKEN
9103 && r_type != R_PPC64_ADDR14_BRNTAKEN)
9104 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
9107 if (stub_entry != NULL)
9109 /* Munge up the value and addend so that we call the stub
9110 rather than the procedure directly. */
9111 relocation = (stub_entry->stub_offset
9112 + stub_entry->stub_sec->output_offset
9113 + stub_entry->stub_sec->output_section->vma);
9121 /* Set 'a' bit. This is 0b00010 in BO field for branch
9122 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9123 for branch on CTR insns (BO == 1a00t or 1a01t). */
9124 if ((insn & (0x14 << 21)) == (0x04 << 21))
9126 else if ((insn & (0x14 << 21)) == (0x10 << 21))
9133 /* Invert 'y' bit if not the default. */
9134 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
9138 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9141 /* NOP out calls to undefined weak functions.
9142 We can thus call a weak function without first
9143 checking whether the function is defined. */
9145 && h->elf.root.type == bfd_link_hash_undefweak
9146 && r_type == R_PPC64_REL24
9148 && rel->r_addend == 0)
9150 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9161 (*_bfd_error_handler)
9162 (_("%B: unknown relocation type %d for symbol %s"),
9163 input_bfd, (int) r_type, sym_name);
9165 bfd_set_error (bfd_error_bad_value);
9171 case R_PPC64_GNU_VTINHERIT:
9172 case R_PPC64_GNU_VTENTRY:
9175 /* GOT16 relocations. Like an ADDR16 using the symbol's
9176 address in the GOT as relocation value instead of the
9177 symbol's value itself. Also, create a GOT entry for the
9178 symbol and put the symbol value there. */
9179 case R_PPC64_GOT_TLSGD16:
9180 case R_PPC64_GOT_TLSGD16_LO:
9181 case R_PPC64_GOT_TLSGD16_HI:
9182 case R_PPC64_GOT_TLSGD16_HA:
9183 tls_type = TLS_TLS | TLS_GD;
9186 case R_PPC64_GOT_TLSLD16:
9187 case R_PPC64_GOT_TLSLD16_LO:
9188 case R_PPC64_GOT_TLSLD16_HI:
9189 case R_PPC64_GOT_TLSLD16_HA:
9190 tls_type = TLS_TLS | TLS_LD;
9193 case R_PPC64_GOT_TPREL16_DS:
9194 case R_PPC64_GOT_TPREL16_LO_DS:
9195 case R_PPC64_GOT_TPREL16_HI:
9196 case R_PPC64_GOT_TPREL16_HA:
9197 tls_type = TLS_TLS | TLS_TPREL;
9200 case R_PPC64_GOT_DTPREL16_DS:
9201 case R_PPC64_GOT_DTPREL16_LO_DS:
9202 case R_PPC64_GOT_DTPREL16_HI:
9203 case R_PPC64_GOT_DTPREL16_HA:
9204 tls_type = TLS_TLS | TLS_DTPREL;
9208 case R_PPC64_GOT16_LO:
9209 case R_PPC64_GOT16_HI:
9210 case R_PPC64_GOT16_HA:
9211 case R_PPC64_GOT16_DS:
9212 case R_PPC64_GOT16_LO_DS:
9215 /* Relocation is to the entry for this symbol in the global
9220 unsigned long indx = 0;
9222 if (tls_type == (TLS_TLS | TLS_LD)
9224 || (h->elf.elf_link_hash_flags
9225 & ELF_LINK_HASH_DEF_DYNAMIC) == 0))
9226 offp = &ppc64_tlsld_got (input_bfd)->offset;
9229 struct got_entry *ent;
9233 bfd_boolean dyn = htab->elf.dynamic_sections_created;
9234 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
9237 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
9238 /* This is actually a static link, or it is a
9239 -Bsymbolic link and the symbol is defined
9240 locally, or the symbol was forced to be local
9241 because of a version file. */
9245 indx = h->elf.dynindx;
9246 unresolved_reloc = FALSE;
9248 ent = h->elf.got.glist;
9252 if (local_got_ents == NULL)
9254 ent = local_got_ents[r_symndx];
9257 for (; ent != NULL; ent = ent->next)
9258 if (ent->addend == rel->r_addend
9259 && ent->owner == input_bfd
9260 && ent->tls_type == tls_type)
9264 offp = &ent->got.offset;
9267 got = ppc64_elf_tdata (input_bfd)->got;
9271 /* The offset must always be a multiple of 8. We use the
9272 least significant bit to record whether we have already
9273 processed this entry. */
9279 /* Generate relocs for the dynamic linker, except in
9280 the case of TLSLD where we'll use one entry per
9282 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
9285 if ((info->shared || indx != 0)
9287 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
9288 || h->elf.root.type != bfd_link_hash_undefweak))
9290 outrel.r_offset = (got->output_section->vma
9291 + got->output_offset
9293 outrel.r_addend = rel->r_addend;
9294 if (tls_type & (TLS_LD | TLS_GD))
9296 outrel.r_addend = 0;
9297 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
9298 if (tls_type == (TLS_TLS | TLS_GD))
9300 loc = relgot->contents;
9301 loc += (relgot->reloc_count++
9302 * sizeof (Elf64_External_Rela));
9303 bfd_elf64_swap_reloca_out (output_bfd,
9305 outrel.r_offset += 8;
9306 outrel.r_addend = rel->r_addend;
9308 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
9311 else if (tls_type == (TLS_TLS | TLS_DTPREL))
9312 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
9313 else if (tls_type == (TLS_TLS | TLS_TPREL))
9314 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
9317 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
9319 /* Write the .got section contents for the sake
9321 loc = got->contents + off;
9322 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
9326 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
9328 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
9330 outrel.r_addend += relocation;
9331 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
9332 outrel.r_addend -= htab->elf.tls_sec->vma;
9334 loc = relgot->contents;
9335 loc += (relgot->reloc_count++
9336 * sizeof (Elf64_External_Rela));
9337 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
9340 /* Init the .got section contents here if we're not
9341 emitting a reloc. */
9344 relocation += rel->r_addend;
9345 if (tls_type == (TLS_TLS | TLS_LD))
9347 else if (tls_type != 0)
9349 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
9350 if (tls_type == (TLS_TLS | TLS_TPREL))
9351 relocation += DTP_OFFSET - TP_OFFSET;
9353 if (tls_type == (TLS_TLS | TLS_GD))
9355 bfd_put_64 (output_bfd, relocation,
9356 got->contents + off + 8);
9361 bfd_put_64 (output_bfd, relocation,
9362 got->contents + off);
9366 if (off >= (bfd_vma) -2)
9369 relocation = got->output_offset + off;
9371 /* TOC base (r2) is TOC start plus 0x8000. */
9372 addend = -TOC_BASE_OFF;
9376 case R_PPC64_PLT16_HA:
9377 case R_PPC64_PLT16_HI:
9378 case R_PPC64_PLT16_LO:
9381 /* Relocation is to the entry for this symbol in the
9382 procedure linkage table. */
9384 /* Resolve a PLT reloc against a local symbol directly,
9385 without using the procedure linkage table. */
9389 /* It's possible that we didn't make a PLT entry for this
9390 symbol. This happens when statically linking PIC code,
9391 or when using -Bsymbolic. Go find a match if there is a
9393 if (htab->plt != NULL)
9395 struct plt_entry *ent;
9396 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
9397 if (ent->addend == rel->r_addend
9398 && ent->plt.offset != (bfd_vma) -1)
9400 relocation = (htab->plt->output_section->vma
9401 + htab->plt->output_offset
9403 unresolved_reloc = FALSE;
9409 /* Relocation value is TOC base. */
9410 relocation = TOCstart;
9412 relocation += htab->stub_group[input_section->id].toc_off;
9413 else if (unresolved_reloc)
9415 else if (sec != NULL && sec->id <= htab->top_id)
9416 relocation += htab->stub_group[sec->id].toc_off;
9418 unresolved_reloc = TRUE;
9421 /* TOC16 relocs. We want the offset relative to the TOC base,
9422 which is the address of the start of the TOC plus 0x8000.
9423 The TOC consists of sections .got, .toc, .tocbss, and .plt,
9426 case R_PPC64_TOC16_LO:
9427 case R_PPC64_TOC16_HI:
9428 case R_PPC64_TOC16_DS:
9429 case R_PPC64_TOC16_LO_DS:
9430 case R_PPC64_TOC16_HA:
9431 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
9434 /* Relocate against the beginning of the section. */
9435 case R_PPC64_SECTOFF:
9436 case R_PPC64_SECTOFF_LO:
9437 case R_PPC64_SECTOFF_HI:
9438 case R_PPC64_SECTOFF_DS:
9439 case R_PPC64_SECTOFF_LO_DS:
9440 case R_PPC64_SECTOFF_HA:
9442 addend -= sec->output_section->vma;
9446 case R_PPC64_REL14_BRNTAKEN:
9447 case R_PPC64_REL14_BRTAKEN:
9451 case R_PPC64_TPREL16:
9452 case R_PPC64_TPREL16_LO:
9453 case R_PPC64_TPREL16_HI:
9454 case R_PPC64_TPREL16_HA:
9455 case R_PPC64_TPREL16_DS:
9456 case R_PPC64_TPREL16_LO_DS:
9457 case R_PPC64_TPREL16_HIGHER:
9458 case R_PPC64_TPREL16_HIGHERA:
9459 case R_PPC64_TPREL16_HIGHEST:
9460 case R_PPC64_TPREL16_HIGHESTA:
9461 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
9463 /* The TPREL16 relocs shouldn't really be used in shared
9464 libs as they will result in DT_TEXTREL being set, but
9465 support them anyway. */
9469 case R_PPC64_DTPREL16:
9470 case R_PPC64_DTPREL16_LO:
9471 case R_PPC64_DTPREL16_HI:
9472 case R_PPC64_DTPREL16_HA:
9473 case R_PPC64_DTPREL16_DS:
9474 case R_PPC64_DTPREL16_LO_DS:
9475 case R_PPC64_DTPREL16_HIGHER:
9476 case R_PPC64_DTPREL16_HIGHERA:
9477 case R_PPC64_DTPREL16_HIGHEST:
9478 case R_PPC64_DTPREL16_HIGHESTA:
9479 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
9482 case R_PPC64_DTPMOD64:
9487 case R_PPC64_TPREL64:
9488 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
9491 case R_PPC64_DTPREL64:
9492 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
9495 /* Relocations that may need to be propagated if this is a
9500 case R_PPC64_ADDR14:
9501 case R_PPC64_ADDR14_BRNTAKEN:
9502 case R_PPC64_ADDR14_BRTAKEN:
9503 case R_PPC64_ADDR16:
9504 case R_PPC64_ADDR16_DS:
9505 case R_PPC64_ADDR16_HA:
9506 case R_PPC64_ADDR16_HI:
9507 case R_PPC64_ADDR16_HIGHER:
9508 case R_PPC64_ADDR16_HIGHERA:
9509 case R_PPC64_ADDR16_HIGHEST:
9510 case R_PPC64_ADDR16_HIGHESTA:
9511 case R_PPC64_ADDR16_LO:
9512 case R_PPC64_ADDR16_LO_DS:
9513 case R_PPC64_ADDR24:
9514 case R_PPC64_ADDR32:
9515 case R_PPC64_ADDR64:
9516 case R_PPC64_UADDR16:
9517 case R_PPC64_UADDR32:
9518 case R_PPC64_UADDR64:
9519 /* r_symndx will be zero only for relocs against symbols
9520 from removed linkonce sections, or sections discarded by
9528 if ((input_section->flags & SEC_ALLOC) == 0)
9531 if (NO_OPD_RELOCS && is_opd)
9536 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
9537 || h->elf.root.type != bfd_link_hash_undefweak)
9538 && (MUST_BE_DYN_RELOC (r_type)
9539 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
9540 || (ELIMINATE_COPY_RELOCS
9543 && h->elf.dynindx != -1
9544 && !(h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF)
9545 && (h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)
9546 && !(h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
9548 Elf_Internal_Rela outrel;
9549 bfd_boolean skip, relocate;
9554 /* When generating a dynamic object, these relocations
9555 are copied into the output file to be resolved at run
9561 out_off = _bfd_elf_section_offset (output_bfd, info,
9562 input_section, rel->r_offset);
9563 if (out_off == (bfd_vma) -1)
9565 else if (out_off == (bfd_vma) -2)
9566 skip = TRUE, relocate = TRUE;
9567 out_off += (input_section->output_section->vma
9568 + input_section->output_offset);
9569 outrel.r_offset = out_off;
9570 outrel.r_addend = rel->r_addend;
9572 /* Optimize unaligned reloc use. */
9573 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
9574 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
9575 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
9576 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
9577 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
9578 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
9579 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
9580 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
9581 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
9584 memset (&outrel, 0, sizeof outrel);
9585 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
9587 && r_type != R_PPC64_TOC)
9588 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
9591 /* This symbol is local, or marked to become local,
9592 or this is an opd section reloc which must point
9593 at a local function. */
9594 outrel.r_addend += relocation;
9595 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
9597 if (is_opd && h != NULL)
9599 /* Lie about opd entries. This case occurs
9600 when building shared libraries and we
9601 reference a function in another shared
9602 lib. The same thing happens for a weak
9603 definition in an application that's
9604 overridden by a strong definition in a
9605 shared lib. (I believe this is a generic
9606 bug in binutils handling of weak syms.)
9607 In these cases we won't use the opd
9608 entry in this lib. */
9609 unresolved_reloc = FALSE;
9611 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9613 /* We need to relocate .opd contents for ld.so.
9614 Prelink also wants simple and consistent rules
9615 for relocs. This make all RELATIVE relocs have
9616 *r_offset equal to r_addend. */
9623 if (bfd_is_abs_section (sec))
9625 else if (sec == NULL || sec->owner == NULL)
9627 bfd_set_error (bfd_error_bad_value);
9634 osec = sec->output_section;
9635 indx = elf_section_data (osec)->dynindx;
9637 /* We are turning this relocation into one
9638 against a section symbol, so subtract out
9639 the output section's address but not the
9640 offset of the input section in the output
9642 outrel.r_addend -= osec->vma;
9645 outrel.r_info = ELF64_R_INFO (indx, r_type);
9649 sreloc = elf_section_data (input_section)->sreloc;
9653 loc = sreloc->contents;
9654 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
9655 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
9657 /* If this reloc is against an external symbol, it will
9658 be computed at runtime, so there's no need to do
9659 anything now. However, for the sake of prelink ensure
9660 that the section contents are a known value. */
9663 unresolved_reloc = FALSE;
9664 /* The value chosen here is quite arbitrary as ld.so
9665 ignores section contents except for the special
9666 case of .opd where the contents might be accessed
9667 before relocation. Choose zero, as that won't
9668 cause reloc overflow. */
9671 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
9672 to improve backward compatibility with older
9674 if (r_type == R_PPC64_ADDR64)
9675 addend = outrel.r_addend;
9676 /* Adjust pc_relative relocs to have zero in *r_offset. */
9677 else if (ppc64_elf_howto_table[r_type]->pc_relative)
9678 addend = (input_section->output_section->vma
9679 + input_section->output_offset
9686 case R_PPC64_GLOB_DAT:
9687 case R_PPC64_JMP_SLOT:
9688 case R_PPC64_RELATIVE:
9689 /* We shouldn't ever see these dynamic relocs in relocatable
9693 case R_PPC64_PLTGOT16:
9694 case R_PPC64_PLTGOT16_DS:
9695 case R_PPC64_PLTGOT16_HA:
9696 case R_PPC64_PLTGOT16_HI:
9697 case R_PPC64_PLTGOT16_LO:
9698 case R_PPC64_PLTGOT16_LO_DS:
9699 case R_PPC64_PLTREL32:
9700 case R_PPC64_PLTREL64:
9701 /* These ones haven't been implemented yet. */
9703 (*_bfd_error_handler)
9704 (_("%B: relocation %s is not supported for symbol %s."),
9706 ppc64_elf_howto_table[r_type]->name, sym_name);
9708 bfd_set_error (bfd_error_invalid_operation);
9713 /* Do any further special processing. */
9719 case R_PPC64_ADDR16_HA:
9720 case R_PPC64_ADDR16_HIGHERA:
9721 case R_PPC64_ADDR16_HIGHESTA:
9722 case R_PPC64_GOT16_HA:
9723 case R_PPC64_PLTGOT16_HA:
9724 case R_PPC64_PLT16_HA:
9725 case R_PPC64_TOC16_HA:
9726 case R_PPC64_SECTOFF_HA:
9727 case R_PPC64_TPREL16_HA:
9728 case R_PPC64_DTPREL16_HA:
9729 case R_PPC64_GOT_TLSGD16_HA:
9730 case R_PPC64_GOT_TLSLD16_HA:
9731 case R_PPC64_GOT_TPREL16_HA:
9732 case R_PPC64_GOT_DTPREL16_HA:
9733 case R_PPC64_TPREL16_HIGHER:
9734 case R_PPC64_TPREL16_HIGHERA:
9735 case R_PPC64_TPREL16_HIGHEST:
9736 case R_PPC64_TPREL16_HIGHESTA:
9737 case R_PPC64_DTPREL16_HIGHER:
9738 case R_PPC64_DTPREL16_HIGHERA:
9739 case R_PPC64_DTPREL16_HIGHEST:
9740 case R_PPC64_DTPREL16_HIGHESTA:
9741 /* It's just possible that this symbol is a weak symbol
9742 that's not actually defined anywhere. In that case,
9743 'sec' would be NULL, and we should leave the symbol
9744 alone (it will be set to zero elsewhere in the link). */
9746 /* Add 0x10000 if sign bit in 0:15 is set.
9747 Bits 0:15 are not used. */
9751 case R_PPC64_ADDR16_DS:
9752 case R_PPC64_ADDR16_LO_DS:
9753 case R_PPC64_GOT16_DS:
9754 case R_PPC64_GOT16_LO_DS:
9755 case R_PPC64_PLT16_LO_DS:
9756 case R_PPC64_SECTOFF_DS:
9757 case R_PPC64_SECTOFF_LO_DS:
9758 case R_PPC64_TOC16_DS:
9759 case R_PPC64_TOC16_LO_DS:
9760 case R_PPC64_PLTGOT16_DS:
9761 case R_PPC64_PLTGOT16_LO_DS:
9762 case R_PPC64_GOT_TPREL16_DS:
9763 case R_PPC64_GOT_TPREL16_LO_DS:
9764 case R_PPC64_GOT_DTPREL16_DS:
9765 case R_PPC64_GOT_DTPREL16_LO_DS:
9766 case R_PPC64_TPREL16_DS:
9767 case R_PPC64_TPREL16_LO_DS:
9768 case R_PPC64_DTPREL16_DS:
9769 case R_PPC64_DTPREL16_LO_DS:
9770 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9772 /* If this reloc is against an lq insn, then the value must be
9773 a multiple of 16. This is somewhat of a hack, but the
9774 "correct" way to do this by defining _DQ forms of all the
9775 _DS relocs bloats all reloc switches in this file. It
9776 doesn't seem to make much sense to use any of these relocs
9777 in data, so testing the insn should be safe. */
9778 if ((insn & (0x3f << 26)) == (56u << 26))
9780 if (((relocation + addend) & mask) != 0)
9782 (*_bfd_error_handler)
9783 (_("%B: error: relocation %s not a multiple of %d"),
9785 ppc64_elf_howto_table[r_type]->name,
9787 bfd_set_error (bfd_error_bad_value);
9794 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
9795 because such sections are not SEC_ALLOC and thus ld.so will
9796 not process them. */
9797 if (unresolved_reloc
9798 && !((input_section->flags & SEC_DEBUGGING) != 0
9799 && (h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
9801 (*_bfd_error_handler)
9802 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
9805 (long) rel->r_offset,
9806 ppc64_elf_howto_table[(int) r_type]->name,
9807 h->elf.root.root.string);
9811 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
9819 if (r != bfd_reloc_ok)
9821 if (sym_name == NULL)
9822 sym_name = "(null)";
9823 if (r == bfd_reloc_overflow)
9828 && h->elf.root.type == bfd_link_hash_undefweak
9829 && ppc64_elf_howto_table[r_type]->pc_relative)
9831 /* Assume this is a call protected by other code that
9832 detects the symbol is undefined. If this is the case,
9833 we can safely ignore the overflow. If not, the
9834 program is hosed anyway, and a little warning isn't
9840 if (!((*info->callbacks->reloc_overflow)
9841 (info, sym_name, ppc64_elf_howto_table[r_type]->name,
9842 rel->r_addend, input_bfd, input_section, rel->r_offset)))
9847 (*_bfd_error_handler)
9848 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
9851 (long) rel->r_offset,
9852 ppc64_elf_howto_table[r_type]->name,
9863 /* Adjust the value of any local symbols in opd sections. */
9866 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
9867 const char *name ATTRIBUTE_UNUSED,
9868 Elf_Internal_Sym *elfsym,
9869 asection *input_sec,
9870 struct elf_link_hash_entry *h)
9872 long *opd_adjust, adjust;
9878 opd_adjust = get_opd_info (input_sec);
9879 if (opd_adjust == NULL)
9882 value = elfsym->st_value - input_sec->output_offset;
9883 if (!info->relocatable)
9884 value -= input_sec->output_section->vma;
9886 adjust = opd_adjust[value / 8];
9888 elfsym->st_value = 0;
9890 elfsym->st_value += adjust;
9894 /* Finish up dynamic symbol handling. We set the contents of various
9895 dynamic sections here. */
9898 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
9899 struct bfd_link_info *info,
9900 struct elf_link_hash_entry *h,
9901 Elf_Internal_Sym *sym)
9903 struct ppc_link_hash_table *htab;
9905 struct plt_entry *ent;
9906 Elf_Internal_Rela rela;
9909 htab = ppc_hash_table (info);
9910 dynobj = htab->elf.dynobj;
9912 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9913 if (ent->plt.offset != (bfd_vma) -1)
9915 /* This symbol has an entry in the procedure linkage
9916 table. Set it up. */
9918 if (htab->plt == NULL
9919 || htab->relplt == NULL
9920 || htab->glink == NULL)
9923 /* Create a JMP_SLOT reloc to inform the dynamic linker to
9924 fill in the PLT entry. */
9925 rela.r_offset = (htab->plt->output_section->vma
9926 + htab->plt->output_offset
9928 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
9929 rela.r_addend = ent->addend;
9931 loc = htab->relplt->contents;
9932 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
9933 * sizeof (Elf64_External_Rela));
9934 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
9937 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
9939 Elf_Internal_Rela rela;
9942 /* This symbol needs a copy reloc. Set it up. */
9944 if (h->dynindx == -1
9945 || (h->root.type != bfd_link_hash_defined
9946 && h->root.type != bfd_link_hash_defweak)
9947 || htab->relbss == NULL)
9950 rela.r_offset = (h->root.u.def.value
9951 + h->root.u.def.section->output_section->vma
9952 + h->root.u.def.section->output_offset);
9953 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
9955 loc = htab->relbss->contents;
9956 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
9957 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
9960 /* Mark some specially defined symbols as absolute. */
9961 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
9962 sym->st_shndx = SHN_ABS;
9967 /* Used to decide how to sort relocs in an optimal manner for the
9968 dynamic linker, before writing them out. */
9970 static enum elf_reloc_type_class
9971 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
9973 enum elf_ppc64_reloc_type r_type;
9975 r_type = ELF64_R_TYPE (rela->r_info);
9978 case R_PPC64_RELATIVE:
9979 return reloc_class_relative;
9980 case R_PPC64_JMP_SLOT:
9981 return reloc_class_plt;
9983 return reloc_class_copy;
9985 return reloc_class_normal;
9989 /* Finish up the dynamic sections. */
9992 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
9993 struct bfd_link_info *info)
9995 struct ppc_link_hash_table *htab;
9999 htab = ppc_hash_table (info);
10000 dynobj = htab->elf.dynobj;
10001 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10003 if (htab->elf.dynamic_sections_created)
10005 Elf64_External_Dyn *dyncon, *dynconend;
10007 if (sdyn == NULL || htab->got == NULL)
10010 dyncon = (Elf64_External_Dyn *) sdyn->contents;
10011 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
10012 for (; dyncon < dynconend; dyncon++)
10014 Elf_Internal_Dyn dyn;
10017 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10024 case DT_PPC64_GLINK:
10026 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10027 /* We stupidly defined DT_PPC64_GLINK to be the start
10028 of glink rather than the first entry point, which is
10029 what ld.so needs, and now have a bigger stub to
10030 support automatic multiple TOCs. */
10031 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
10035 s = bfd_get_section_by_name (output_bfd, ".opd");
10038 dyn.d_un.d_ptr = s->vma;
10041 case DT_PPC64_OPDSZ:
10042 s = bfd_get_section_by_name (output_bfd, ".opd");
10045 dyn.d_un.d_val = s->size;
10050 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10055 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10059 dyn.d_un.d_val = htab->relplt->size;
10063 /* Don't count procedure linkage table relocs in the
10064 overall reloc count. */
10068 dyn.d_un.d_val -= s->size;
10072 /* We may not be using the standard ELF linker script.
10073 If .rela.plt is the first .rela section, we adjust
10074 DT_RELA to not include it. */
10078 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10080 dyn.d_un.d_ptr += s->size;
10084 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
10088 if (htab->got != NULL && htab->got->size != 0)
10090 /* Fill in the first entry in the global offset table.
10091 We use it to hold the link-time TOCbase. */
10092 bfd_put_64 (output_bfd,
10093 elf_gp (output_bfd) + TOC_BASE_OFF,
10094 htab->got->contents);
10096 /* Set .got entry size. */
10097 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
10100 if (htab->plt != NULL && htab->plt->size != 0)
10102 /* Set .plt entry size. */
10103 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
10107 /* We need to handle writing out multiple GOT sections ourselves,
10108 since we didn't add them to DYNOBJ. */
10109 while ((dynobj = dynobj->link_next) != NULL)
10112 s = ppc64_elf_tdata (dynobj)->got;
10115 && s->output_section != bfd_abs_section_ptr
10116 && !bfd_set_section_contents (output_bfd, s->output_section,
10117 s->contents, s->output_offset,
10120 s = ppc64_elf_tdata (dynobj)->relgot;
10123 && s->output_section != bfd_abs_section_ptr
10124 && !bfd_set_section_contents (output_bfd, s->output_section,
10125 s->contents, s->output_offset,
10133 #include "elf64-target.h"