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;
2384 /* A copy of relocs before they are modified for --emit-relocs. */
2385 Elf_Internal_Rela *opd_relocs;
2388 #define ppc64_elf_tdata(bfd) \
2389 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2391 #define ppc64_tlsld_got(bfd) \
2392 (&ppc64_elf_tdata (bfd)->tlsld_got)
2394 /* Override the generic function because we store some extras. */
2397 ppc64_elf_mkobject (bfd *abfd)
2399 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2400 abfd->tdata.any = bfd_zalloc (abfd, amt);
2401 if (abfd->tdata.any == NULL)
2406 /* Return 1 if target is one of ours. */
2409 is_ppc64_elf_target (const struct bfd_target *targ)
2411 extern const bfd_target bfd_elf64_powerpc_vec;
2412 extern const bfd_target bfd_elf64_powerpcle_vec;
2414 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2417 /* Fix bad default arch selected for a 64 bit input bfd when the
2418 default is 32 bit. */
2421 ppc64_elf_object_p (bfd *abfd)
2423 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2425 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2427 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2429 /* Relies on arch after 32 bit default being 64 bit default. */
2430 abfd->arch_info = abfd->arch_info->next;
2431 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2437 /* Support for core dump NOTE sections. */
2440 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2442 size_t offset, size;
2444 if (note->descsz != 504)
2448 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2451 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2457 /* Make a ".reg/999" section. */
2458 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2459 size, note->descpos + offset);
2463 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2465 if (note->descsz != 136)
2468 elf_tdata (abfd)->core_program
2469 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2470 elf_tdata (abfd)->core_command
2471 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2476 /* Merge backend specific data from an object file to the output
2477 object file when linking. */
2480 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2482 /* Check if we have the same endianess. */
2483 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2484 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2485 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2489 if (bfd_big_endian (ibfd))
2490 msg = _("%B: compiled for a big endian system "
2491 "and target is little endian");
2493 msg = _("%B: compiled for a little endian system "
2494 "and target is big endian");
2496 (*_bfd_error_handler) (msg, ibfd);
2498 bfd_set_error (bfd_error_wrong_format);
2505 /* Add extra PPC sections. */
2507 static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2509 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2510 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2511 { ".plt", 4, 0, SHT_NOBITS, 0 },
2512 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2513 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2514 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2515 { NULL, 0, 0, 0, 0 }
2518 struct _ppc64_elf_section_data
2520 struct bfd_elf_section_data elf;
2522 /* An array with one entry for each opd function descriptor. */
2525 /* Points to the function code section for local opd entries. */
2526 asection **func_sec;
2527 /* After editing .opd, adjust references to opd local syms. */
2531 /* An array for toc sections, indexed by offset/8.
2532 Specifies the relocation symbol index used at a given toc offset. */
2536 #define ppc64_elf_section_data(sec) \
2537 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2540 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2542 struct _ppc64_elf_section_data *sdata;
2543 bfd_size_type amt = sizeof (*sdata);
2545 sdata = bfd_zalloc (abfd, amt);
2548 sec->used_by_bfd = sdata;
2550 return _bfd_elf_new_section_hook (abfd, sec);
2554 get_opd_info (asection * sec)
2557 && ppc64_elf_section_data (sec) != NULL
2558 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2559 return ppc64_elf_section_data (sec)->opd.adjust;
2563 /* Parameters for the qsort hook. */
2564 static asection *synthetic_opd;
2565 static bfd_boolean synthetic_relocatable;
2567 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2570 compare_symbols (const void *ap, const void *bp)
2572 const asymbol *a = * (const asymbol **) ap;
2573 const asymbol *b = * (const asymbol **) bp;
2575 /* Section symbols first. */
2576 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2578 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2581 /* then .opd symbols. */
2582 if (a->section == synthetic_opd && b->section != synthetic_opd)
2584 if (a->section != synthetic_opd && b->section == synthetic_opd)
2587 /* then other code symbols. */
2588 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2589 == (SEC_CODE | SEC_ALLOC)
2590 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2591 != (SEC_CODE | SEC_ALLOC))
2594 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2595 != (SEC_CODE | SEC_ALLOC)
2596 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2597 == (SEC_CODE | SEC_ALLOC))
2600 if (synthetic_relocatable)
2602 if (a->section->id < b->section->id)
2605 if (a->section->id > b->section->id)
2609 if (a->value + a->section->vma < b->value + b->section->vma)
2612 if (a->value + a->section->vma > b->value + b->section->vma)
2618 /* Search SYMS for a symbol of the given VALUE. */
2621 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2629 mid = (lo + hi) >> 1;
2630 if (syms[mid]->value + syms[mid]->section->vma < value)
2632 else if (syms[mid]->value + syms[mid]->section->vma > value)
2642 mid = (lo + hi) >> 1;
2643 if (syms[mid]->section->id < id)
2645 else if (syms[mid]->section->id > id)
2647 else if (syms[mid]->value < value)
2649 else if (syms[mid]->value > value)
2658 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2662 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2663 long static_count, asymbol **static_syms,
2664 long dyn_count, asymbol **dyn_syms,
2671 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2673 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2678 opd = bfd_get_section_by_name (abfd, ".opd");
2682 symcount = static_count;
2684 symcount += dyn_count;
2688 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2692 if (!relocatable && static_count != 0 && dyn_count != 0)
2694 /* Use both symbol tables. */
2695 memcpy (syms, static_syms, static_count * sizeof (*syms));
2696 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2698 else if (!relocatable && static_count == 0)
2699 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2701 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2703 synthetic_opd = opd;
2704 synthetic_relocatable = relocatable;
2705 qsort (syms, symcount, sizeof (*syms), compare_symbols);
2707 if (!relocatable && symcount > 1)
2710 /* Trim duplicate syms, since we may have merged the normal and
2711 dynamic symbols. Actually, we only care about syms that have
2712 different values, so trim any with the same value. */
2713 for (i = 1, j = 1; i < symcount; ++i)
2714 if (syms[i - 1]->value + syms[i - 1]->section->vma
2715 != syms[i]->value + syms[i]->section->vma)
2716 syms[j++] = syms[i];
2721 if (syms[i]->section == opd)
2725 for (; i < symcount; ++i)
2726 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2727 != (SEC_CODE | SEC_ALLOC))
2728 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2732 for (; i < symcount; ++i)
2733 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2737 for (; i < symcount; ++i)
2738 if (syms[i]->section != opd)
2742 for (; i < symcount; ++i)
2743 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2744 != (SEC_CODE | SEC_ALLOC))
2749 if (opdsymend == secsymend)
2754 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2759 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2760 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2763 || ! (*slurp_relocs) (abfd, opd, static_syms, FALSE))
2767 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2771 while (r < opd->relocation + relcount
2772 && r->address < syms[i]->value + opd->vma)
2775 if (r == opd->relocation + relcount)
2778 if (r->address != syms[i]->value + opd->vma)
2781 if (r->howto->type != R_PPC64_ADDR64)
2784 sym = *r->sym_ptr_ptr;
2785 if (!sym_exists_at (syms, opdsymend, symcount,
2786 sym->section->id, sym->value + r->addend))
2789 size += sizeof (asymbol);
2790 size += strlen (syms[i]->name) + 2;
2794 s = *ret = bfd_malloc (size);
2801 names = (char *) (s + count);
2803 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2807 while (r < opd->relocation + relcount
2808 && r->address < syms[i]->value + opd->vma)
2811 if (r == opd->relocation + relcount)
2814 if (r->address != syms[i]->value + opd->vma)
2817 if (r->howto->type != R_PPC64_ADDR64)
2820 sym = *r->sym_ptr_ptr;
2821 if (!sym_exists_at (syms, opdsymend, symcount,
2822 sym->section->id, sym->value + r->addend))
2827 s->section = sym->section;
2828 s->value = sym->value + r->addend;
2831 len = strlen (syms[i]->name);
2832 memcpy (names, syms[i]->name, len + 1);
2843 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2847 free_contents_and_exit:
2854 for (i = secsymend; i < opdsymend; ++i)
2858 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2859 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2862 size += sizeof (asymbol);
2863 size += strlen (syms[i]->name) + 2;
2867 s = *ret = bfd_malloc (size);
2871 goto free_contents_and_exit;
2874 names = (char *) (s + count);
2876 for (i = secsymend; i < opdsymend; ++i)
2880 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2881 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2885 asection *sec = abfd->sections;
2892 long mid = (lo + hi) >> 1;
2893 if (syms[mid]->section->vma < ent)
2895 else if (syms[mid]->section->vma > ent)
2899 sec = syms[mid]->section;
2904 if (lo >= hi && lo > codesecsym)
2905 sec = syms[lo - 1]->section;
2907 for (; sec != NULL; sec = sec->next)
2911 if ((sec->flags & SEC_ALLOC) == 0
2912 || (sec->flags & SEC_LOAD) == 0)
2914 if ((sec->flags & SEC_CODE) != 0)
2917 s->value = ent - s->section->vma;
2920 len = strlen (syms[i]->name);
2921 memcpy (names, syms[i]->name, len + 1);
2934 /* The following functions are specific to the ELF linker, while
2935 functions above are used generally. Those named ppc64_elf_* are
2936 called by the main ELF linker code. They appear in this file more
2937 or less in the order in which they are called. eg.
2938 ppc64_elf_check_relocs is called early in the link process,
2939 ppc64_elf_finish_dynamic_sections is one of the last functions
2942 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2943 functions have both a function code symbol and a function descriptor
2944 symbol. A call to foo in a relocatable object file looks like:
2951 The function definition in another object file might be:
2955 . .quad .TOC.@tocbase
2961 When the linker resolves the call during a static link, the branch
2962 unsurprisingly just goes to .foo and the .opd information is unused.
2963 If the function definition is in a shared library, things are a little
2964 different: The call goes via a plt call stub, the opd information gets
2965 copied to the plt, and the linker patches the nop.
2973 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2974 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2975 . std 2,40(1) # this is the general idea
2983 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2985 The "reloc ()" notation is supposed to indicate that the linker emits
2986 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2989 What are the difficulties here? Well, firstly, the relocations
2990 examined by the linker in check_relocs are against the function code
2991 sym .foo, while the dynamic relocation in the plt is emitted against
2992 the function descriptor symbol, foo. Somewhere along the line, we need
2993 to carefully copy dynamic link information from one symbol to the other.
2994 Secondly, the generic part of the elf linker will make .foo a dynamic
2995 symbol as is normal for most other backends. We need foo dynamic
2996 instead, at least for an application final link. However, when
2997 creating a shared library containing foo, we need to have both symbols
2998 dynamic so that references to .foo are satisfied during the early
2999 stages of linking. Otherwise the linker might decide to pull in a
3000 definition from some other object, eg. a static library.
3002 Update: As of August 2004, we support a new convention. Function
3003 calls may use the function descriptor symbol, ie. "bl foo". This
3004 behaves exactly as "bl .foo". */
3006 /* The linker needs to keep track of the number of relocs that it
3007 decides to copy as dynamic relocs in check_relocs for each symbol.
3008 This is so that it can later discard them if they are found to be
3009 unnecessary. We store the information in a field extending the
3010 regular ELF linker hash table. */
3012 struct ppc_dyn_relocs
3014 struct ppc_dyn_relocs *next;
3016 /* The input section of the reloc. */
3019 /* Total number of relocs copied for the input section. */
3020 bfd_size_type count;
3022 /* Number of pc-relative relocs copied for the input section. */
3023 bfd_size_type pc_count;
3026 /* Track GOT entries needed for a given symbol. We might need more
3027 than one got entry per symbol. */
3030 struct got_entry *next;
3032 /* The symbol addend that we'll be placing in the GOT. */
3035 /* Unlike other ELF targets, we use separate GOT entries for the same
3036 symbol referenced from different input files. This is to support
3037 automatic multiple TOC/GOT sections, where the TOC base can vary
3038 from one input file to another.
3040 Point to the BFD owning this GOT entry. */
3043 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3044 TLS_TPREL or TLS_DTPREL for tls entries. */
3047 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3050 bfd_signed_vma refcount;
3055 /* The same for PLT. */
3058 struct plt_entry *next;
3064 bfd_signed_vma refcount;
3069 /* Of those relocs that might be copied as dynamic relocs, this macro
3070 selects those that must be copied when linking a shared library,
3071 even when the symbol is local. */
3073 #define MUST_BE_DYN_RELOC(RTYPE) \
3074 ((RTYPE) != R_PPC64_REL32 \
3075 && (RTYPE) != R_PPC64_REL64 \
3076 && (RTYPE) != R_PPC64_REL30)
3078 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3079 copying dynamic variables from a shared lib into an app's dynbss
3080 section, and instead use a dynamic relocation to point into the
3081 shared lib. With code that gcc generates, it's vital that this be
3082 enabled; In the PowerPC64 ABI, the address of a function is actually
3083 the address of a function descriptor, which resides in the .opd
3084 section. gcc uses the descriptor directly rather than going via the
3085 GOT as some other ABI's do, which means that initialized function
3086 pointers must reference the descriptor. Thus, a function pointer
3087 initialized to the address of a function in a shared library will
3088 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3089 redefines the function descriptor symbol to point to the copy. This
3090 presents a problem as a plt entry for that function is also
3091 initialized from the function descriptor symbol and the copy reloc
3092 may not be initialized first. */
3093 #define ELIMINATE_COPY_RELOCS 1
3095 /* Section name for stubs is the associated section name plus this
3097 #define STUB_SUFFIX ".stub"
3100 ppc_stub_long_branch:
3101 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3102 destination, but a 24 bit branch in a stub section will reach.
3105 ppc_stub_plt_branch:
3106 Similar to the above, but a 24 bit branch in the stub section won't
3107 reach its destination.
3108 . addis %r12,%r2,xxx@toc@ha
3109 . ld %r11,xxx@toc@l(%r12)
3114 Used to call a function in a shared library. If it so happens that
3115 the plt entry referenced crosses a 64k boundary, then an extra
3116 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3117 xxx+16 as appropriate.
3118 . addis %r12,%r2,xxx@toc@ha
3120 . ld %r11,xxx+0@toc@l(%r12)
3121 . ld %r2,xxx+8@toc@l(%r12)
3123 . ld %r11,xxx+16@toc@l(%r12)
3126 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3127 code to adjust the value and save r2 to support multiple toc sections.
3128 A ppc_stub_long_branch with an r2 offset looks like:
3130 . addis %r2,%r2,off@ha
3131 . addi %r2,%r2,off@l
3134 A ppc_stub_plt_branch with an r2 offset looks like:
3136 . addis %r12,%r2,xxx@toc@ha
3137 . ld %r11,xxx@toc@l(%r12)
3138 . addis %r2,%r2,off@ha
3139 . addi %r2,%r2,off@l
3144 enum ppc_stub_type {
3146 ppc_stub_long_branch,
3147 ppc_stub_long_branch_r2off,
3148 ppc_stub_plt_branch,
3149 ppc_stub_plt_branch_r2off,
3153 struct ppc_stub_hash_entry {
3155 /* Base hash table entry structure. */
3156 struct bfd_hash_entry root;
3158 enum ppc_stub_type stub_type;
3160 /* The stub section. */
3163 /* Offset within stub_sec of the beginning of this stub. */
3164 bfd_vma stub_offset;
3166 /* Given the symbol's value and its section we can determine its final
3167 value when building the stubs (so the stub knows where to jump. */
3168 bfd_vma target_value;
3169 asection *target_section;
3171 /* The symbol table entry, if any, that this was derived from. */
3172 struct ppc_link_hash_entry *h;
3174 /* And the reloc addend that this was derived from. */
3177 /* Where this stub is being called from, or, in the case of combined
3178 stub sections, the first input section in the group. */
3182 struct ppc_branch_hash_entry {
3184 /* Base hash table entry structure. */
3185 struct bfd_hash_entry root;
3187 /* Offset within .branch_lt. */
3188 unsigned int offset;
3190 /* Generation marker. */
3194 struct ppc_link_hash_entry
3196 struct elf_link_hash_entry elf;
3198 /* A pointer to the most recently used stub hash entry against this
3200 struct ppc_stub_hash_entry *stub_cache;
3202 /* Track dynamic relocs copied for this symbol. */
3203 struct ppc_dyn_relocs *dyn_relocs;
3205 /* Link between function code and descriptor symbols. */
3206 struct ppc_link_hash_entry *oh;
3208 /* Flag function code and descriptor symbols. */
3209 unsigned int is_func:1;
3210 unsigned int is_func_descriptor:1;
3212 /* Whether global opd/toc sym has been adjusted or not.
3213 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3214 should be set for all globals defined in any opd/toc section. */
3215 unsigned int adjust_done:1;
3217 /* Set if we twiddled this symbol to weak at some stage. */
3218 unsigned int was_undefined:1;
3220 /* Contexts in which symbol is used in the GOT (or TOC).
3221 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3222 corresponding relocs are encountered during check_relocs.
3223 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3224 indicate the corresponding GOT entry type is not needed.
3225 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3226 a TPREL one. We use a separate flag rather than setting TPREL
3227 just for convenience in distinguishing the two cases. */
3228 #define TLS_GD 1 /* GD reloc. */
3229 #define TLS_LD 2 /* LD reloc. */
3230 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3231 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3232 #define TLS_TLS 16 /* Any TLS reloc. */
3233 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3234 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3238 /* ppc64 ELF linker hash table. */
3240 struct ppc_link_hash_table
3242 struct elf_link_hash_table elf;
3244 /* The stub hash table. */
3245 struct bfd_hash_table stub_hash_table;
3247 /* Another hash table for plt_branch stubs. */
3248 struct bfd_hash_table branch_hash_table;
3250 /* Linker stub bfd. */
3253 /* Linker call-backs. */
3254 asection * (*add_stub_section) (const char *, asection *);
3255 void (*layout_sections_again) (void);
3257 /* Array to keep track of which stub sections have been created, and
3258 information on stub grouping. */
3260 /* This is the section to which stubs in the group will be attached. */
3262 /* The stub section. */
3264 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3268 /* Temp used when calculating TOC pointers. */
3271 /* Highest input section id. */
3274 /* Highest output section index. */
3277 /* List of input sections for each output section. */
3278 asection **input_list;
3280 /* Short-cuts to get to dynamic linker sections. */
3291 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3292 struct ppc_link_hash_entry *tls_get_addr;
3293 struct ppc_link_hash_entry *tls_get_addr_fd;
3296 unsigned long stub_count[ppc_stub_plt_call];
3298 /* Number of stubs against global syms. */
3299 unsigned long stub_globals;
3301 /* Set if we should emit symbols for stubs. */
3302 unsigned int emit_stub_syms:1;
3305 unsigned int stub_error:1;
3307 /* Flag set when small branches are detected. Used to
3308 select suitable defaults for the stub group size. */
3309 unsigned int has_14bit_branch:1;
3311 /* Temp used by ppc64_elf_check_directives. */
3312 unsigned int twiddled_syms:1;
3314 /* Incremented every time we size stubs. */
3315 unsigned int stub_iteration;
3317 /* Small local sym to section mapping cache. */
3318 struct sym_sec_cache sym_sec;
3321 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3323 #define ppc_hash_table(p) \
3324 ((struct ppc_link_hash_table *) ((p)->hash))
3326 #define ppc_stub_hash_lookup(table, string, create, copy) \
3327 ((struct ppc_stub_hash_entry *) \
3328 bfd_hash_lookup ((table), (string), (create), (copy)))
3330 #define ppc_branch_hash_lookup(table, string, create, copy) \
3331 ((struct ppc_branch_hash_entry *) \
3332 bfd_hash_lookup ((table), (string), (create), (copy)))
3334 /* Create an entry in the stub hash table. */
3336 static struct bfd_hash_entry *
3337 stub_hash_newfunc (struct bfd_hash_entry *entry,
3338 struct bfd_hash_table *table,
3341 /* Allocate the structure if it has not already been allocated by a
3345 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3350 /* Call the allocation method of the superclass. */
3351 entry = bfd_hash_newfunc (entry, table, string);
3354 struct ppc_stub_hash_entry *eh;
3356 /* Initialize the local fields. */
3357 eh = (struct ppc_stub_hash_entry *) entry;
3358 eh->stub_type = ppc_stub_none;
3359 eh->stub_sec = NULL;
3360 eh->stub_offset = 0;
3361 eh->target_value = 0;
3362 eh->target_section = NULL;
3370 /* Create an entry in the branch hash table. */
3372 static struct bfd_hash_entry *
3373 branch_hash_newfunc (struct bfd_hash_entry *entry,
3374 struct bfd_hash_table *table,
3377 /* Allocate the structure if it has not already been allocated by a
3381 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3386 /* Call the allocation method of the superclass. */
3387 entry = bfd_hash_newfunc (entry, table, string);
3390 struct ppc_branch_hash_entry *eh;
3392 /* Initialize the local fields. */
3393 eh = (struct ppc_branch_hash_entry *) entry;
3401 /* Create an entry in a ppc64 ELF linker hash table. */
3403 static struct bfd_hash_entry *
3404 link_hash_newfunc (struct bfd_hash_entry *entry,
3405 struct bfd_hash_table *table,
3408 /* Allocate the structure if it has not already been allocated by a
3412 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3417 /* Call the allocation method of the superclass. */
3418 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3421 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3423 eh->stub_cache = NULL;
3424 eh->dyn_relocs = NULL;
3427 eh->is_func_descriptor = 0;
3428 eh->adjust_done = 0;
3429 eh->was_undefined = 0;
3436 /* Create a ppc64 ELF linker hash table. */
3438 static struct bfd_link_hash_table *
3439 ppc64_elf_link_hash_table_create (bfd *abfd)
3441 struct ppc_link_hash_table *htab;
3442 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3444 htab = bfd_zmalloc (amt);
3448 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3454 /* Init the stub hash table too. */
3455 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3458 /* And the branch hash table. */
3459 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3462 /* Initializing two fields of the union is just cosmetic. We really
3463 only care about glist, but when compiled on a 32-bit host the
3464 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3465 debugger inspection of these fields look nicer. */
3466 htab->elf.init_refcount.refcount = 0;
3467 htab->elf.init_refcount.glist = NULL;
3468 htab->elf.init_offset.offset = 0;
3469 htab->elf.init_offset.glist = NULL;
3471 return &htab->elf.root;
3474 /* Free the derived linker hash table. */
3477 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3479 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3481 bfd_hash_table_free (&ret->stub_hash_table);
3482 bfd_hash_table_free (&ret->branch_hash_table);
3483 _bfd_generic_link_hash_table_free (hash);
3486 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3489 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3491 struct ppc_link_hash_table *htab;
3493 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3495 /* Always hook our dynamic sections into the first bfd, which is the
3496 linker created stub bfd. This ensures that the GOT header is at
3497 the start of the output TOC section. */
3498 htab = ppc_hash_table (info);
3499 htab->stub_bfd = abfd;
3500 htab->elf.dynobj = abfd;
3503 /* Build a name for an entry in the stub hash table. */
3506 ppc_stub_name (const asection *input_section,
3507 const asection *sym_sec,
3508 const struct ppc_link_hash_entry *h,
3509 const Elf_Internal_Rela *rel)
3514 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3515 offsets from a sym as a branch target? In fact, we could
3516 probably assume the addend is always zero. */
3517 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3521 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3522 stub_name = bfd_malloc (len);
3523 if (stub_name != NULL)
3525 sprintf (stub_name, "%08x.%s+%x",
3526 input_section->id & 0xffffffff,
3527 h->elf.root.root.string,
3528 (int) rel->r_addend & 0xffffffff);
3533 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3534 stub_name = bfd_malloc (len);
3535 if (stub_name != NULL)
3537 sprintf (stub_name, "%08x.%x:%x+%x",
3538 input_section->id & 0xffffffff,
3539 sym_sec->id & 0xffffffff,
3540 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3541 (int) rel->r_addend & 0xffffffff);
3544 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3545 stub_name[len - 2] = 0;
3549 /* Look up an entry in the stub hash. Stub entries are cached because
3550 creating the stub name takes a bit of time. */
3552 static struct ppc_stub_hash_entry *
3553 ppc_get_stub_entry (const asection *input_section,
3554 const asection *sym_sec,
3555 struct ppc_link_hash_entry *h,
3556 const Elf_Internal_Rela *rel,
3557 struct ppc_link_hash_table *htab)
3559 struct ppc_stub_hash_entry *stub_entry;
3560 const asection *id_sec;
3562 /* If this input section is part of a group of sections sharing one
3563 stub section, then use the id of the first section in the group.
3564 Stub names need to include a section id, as there may well be
3565 more than one stub used to reach say, printf, and we need to
3566 distinguish between them. */
3567 id_sec = htab->stub_group[input_section->id].link_sec;
3569 if (h != NULL && h->stub_cache != NULL
3570 && h->stub_cache->h == h
3571 && h->stub_cache->id_sec == id_sec)
3573 stub_entry = h->stub_cache;
3579 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3580 if (stub_name == NULL)
3583 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3584 stub_name, FALSE, FALSE);
3586 h->stub_cache = stub_entry;
3594 /* Add a new stub entry to the stub hash. Not all fields of the new
3595 stub entry are initialised. */
3597 static struct ppc_stub_hash_entry *
3598 ppc_add_stub (const char *stub_name,
3600 struct ppc_link_hash_table *htab)
3604 struct ppc_stub_hash_entry *stub_entry;
3606 link_sec = htab->stub_group[section->id].link_sec;
3607 stub_sec = htab->stub_group[section->id].stub_sec;
3608 if (stub_sec == NULL)
3610 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3611 if (stub_sec == NULL)
3617 namelen = strlen (link_sec->name);
3618 len = namelen + sizeof (STUB_SUFFIX);
3619 s_name = bfd_alloc (htab->stub_bfd, len);
3623 memcpy (s_name, link_sec->name, namelen);
3624 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3625 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3626 if (stub_sec == NULL)
3628 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3630 htab->stub_group[section->id].stub_sec = stub_sec;
3633 /* Enter this entry into the linker stub hash table. */
3634 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3636 if (stub_entry == NULL)
3638 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3639 section->owner, stub_name);
3643 stub_entry->stub_sec = stub_sec;
3644 stub_entry->stub_offset = 0;
3645 stub_entry->id_sec = link_sec;
3649 /* Create sections for linker generated code. */
3652 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3654 struct ppc_link_hash_table *htab;
3657 htab = ppc_hash_table (info);
3659 /* Create .sfpr for code to save and restore fp regs. */
3660 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3661 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3662 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3663 if (htab->sfpr == NULL
3664 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3665 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3668 /* Create .glink for lazy dynamic linking support. */
3669 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3670 if (htab->glink == NULL
3671 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3672 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3675 /* Create .branch_lt for plt_branch stubs. */
3676 flags = (SEC_ALLOC | SEC_LOAD
3677 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3678 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3679 if (htab->brlt == NULL
3680 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3681 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3684 if (info->shared || info->emitrelocations)
3686 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3687 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3688 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3690 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3691 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3697 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3698 not already done. */
3701 create_got_section (bfd *abfd, struct bfd_link_info *info)
3703 asection *got, *relgot;
3705 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3709 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3712 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3717 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3718 | SEC_LINKER_CREATED);
3720 got = bfd_make_section (abfd, ".got");
3722 || !bfd_set_section_flags (abfd, got, flags)
3723 || !bfd_set_section_alignment (abfd, got, 3))
3726 relgot = bfd_make_section (abfd, ".rela.got");
3728 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3729 || ! bfd_set_section_alignment (abfd, relgot, 3))
3732 ppc64_elf_tdata (abfd)->got = got;
3733 ppc64_elf_tdata (abfd)->relgot = relgot;
3737 /* Create the dynamic sections, and set up shortcuts. */
3740 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3742 struct ppc_link_hash_table *htab;
3744 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3747 htab = ppc_hash_table (info);
3749 htab->got = bfd_get_section_by_name (dynobj, ".got");
3750 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3751 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3752 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3754 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3756 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3757 || (!info->shared && !htab->relbss))
3763 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3766 ppc64_elf_copy_indirect_symbol
3767 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3768 struct elf_link_hash_entry *dir,
3769 struct elf_link_hash_entry *ind)
3771 struct ppc_link_hash_entry *edir, *eind;
3773 edir = (struct ppc_link_hash_entry *) dir;
3774 eind = (struct ppc_link_hash_entry *) ind;
3776 /* Copy over any dynamic relocs we may have on the indirect sym. */
3777 if (eind->dyn_relocs != NULL)
3779 if (edir->dyn_relocs != NULL)
3781 struct ppc_dyn_relocs **pp;
3782 struct ppc_dyn_relocs *p;
3784 if (eind->elf.root.type == bfd_link_hash_indirect)
3787 /* Add reloc counts against the weak sym to the strong sym
3788 list. Merge any entries against the same section. */
3789 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3791 struct ppc_dyn_relocs *q;
3793 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3794 if (q->sec == p->sec)
3796 q->pc_count += p->pc_count;
3797 q->count += p->count;
3804 *pp = edir->dyn_relocs;
3807 edir->dyn_relocs = eind->dyn_relocs;
3808 eind->dyn_relocs = NULL;
3811 edir->is_func |= eind->is_func;
3812 edir->is_func_descriptor |= eind->is_func_descriptor;
3813 edir->tls_mask |= eind->tls_mask;
3815 /* If called to transfer flags for a weakdef during processing
3816 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3817 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3818 if (!(ELIMINATE_COPY_RELOCS
3819 && eind->elf.root.type != bfd_link_hash_indirect
3820 && edir->elf.dynamic_adjusted))
3821 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3823 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3824 edir->elf.ref_regular |= eind->elf.ref_regular;
3825 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3826 edir->elf.needs_plt |= eind->elf.needs_plt;
3828 /* If we were called to copy over info for a weak sym, that's all. */
3829 if (eind->elf.root.type != bfd_link_hash_indirect)
3832 /* Copy over got entries that we may have already seen to the
3833 symbol which just became indirect. */
3834 if (eind->elf.got.glist != NULL)
3836 if (edir->elf.got.glist != NULL)
3838 struct got_entry **entp;
3839 struct got_entry *ent;
3841 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3843 struct got_entry *dent;
3845 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3846 if (dent->addend == ent->addend
3847 && dent->owner == ent->owner
3848 && dent->tls_type == ent->tls_type)
3850 dent->got.refcount += ent->got.refcount;
3857 *entp = edir->elf.got.glist;
3860 edir->elf.got.glist = eind->elf.got.glist;
3861 eind->elf.got.glist = NULL;
3864 /* And plt entries. */
3865 if (eind->elf.plt.plist != NULL)
3867 if (edir->elf.plt.plist != NULL)
3869 struct plt_entry **entp;
3870 struct plt_entry *ent;
3872 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3874 struct plt_entry *dent;
3876 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3877 if (dent->addend == ent->addend)
3879 dent->plt.refcount += ent->plt.refcount;
3886 *entp = edir->elf.plt.plist;
3889 edir->elf.plt.plist = eind->elf.plt.plist;
3890 eind->elf.plt.plist = NULL;
3893 if (edir->elf.dynindx == -1)
3895 edir->elf.dynindx = eind->elf.dynindx;
3896 edir->elf.dynstr_index = eind->elf.dynstr_index;
3897 eind->elf.dynindx = -1;
3898 eind->elf.dynstr_index = 0;
3901 BFD_ASSERT (eind->elf.dynindx == -1);
3904 /* Find the function descriptor hash entry from the given function code
3905 hash entry FH. Link the entries via their OH fields. */
3907 static struct ppc_link_hash_entry *
3908 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3910 struct ppc_link_hash_entry *fdh = fh->oh;
3914 const char *fd_name = fh->elf.root.root.string + 1;
3916 fdh = (struct ppc_link_hash_entry *)
3917 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3920 fdh->is_func_descriptor = 1;
3930 /* Hacks to support old ABI code.
3931 When making function calls, old ABI code references function entry
3932 points (dot symbols), while new ABI code references the function
3933 descriptor symbol. We need to make any combination of reference and
3934 definition work together, without breaking archive linking.
3936 For a defined function "foo" and an undefined call to "bar":
3937 An old object defines "foo" and ".foo", references ".bar" (possibly
3939 A new object defines "foo" and references "bar".
3941 A new object thus has no problem with its undefined symbols being
3942 satisfied by definitions in an old object. On the other hand, the
3943 old object won't have ".bar" satisfied by a new object. */
3945 /* Fix function descriptor symbols defined in .opd sections to be
3949 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
3950 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3951 Elf_Internal_Sym *isym,
3952 const char **name ATTRIBUTE_UNUSED,
3953 flagword *flags ATTRIBUTE_UNUSED,
3955 bfd_vma *value ATTRIBUTE_UNUSED)
3958 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
3959 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
3963 /* This function makes an old ABI object reference to ".bar" cause the
3964 inclusion of a new ABI object archive that defines "bar". */
3966 static struct elf_link_hash_entry *
3967 ppc64_elf_archive_symbol_lookup (bfd *abfd,
3968 struct bfd_link_info *info,
3971 struct elf_link_hash_entry *h;
3975 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
3982 len = strlen (name);
3983 dot_name = bfd_alloc (abfd, len + 2);
3984 if (dot_name == NULL)
3985 return (struct elf_link_hash_entry *) 0 - 1;
3987 memcpy (dot_name + 1, name, len + 1);
3988 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
3989 bfd_release (abfd, dot_name);
3993 /* This function satisfies all old ABI object references to ".bar" if a
3994 new ABI object defines "bar". Well, at least, undefined dot symbols
3995 are made weak. This stops later archive searches from including an
3996 object if we already have a function descriptor definition. It also
3997 prevents the linker complaining about undefined symbols.
3998 We also check and correct mismatched symbol visibility here. The
3999 most restrictive visibility of the function descriptor and the
4000 function entry symbol is used. */
4003 add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4005 struct bfd_link_info *info;
4006 struct ppc_link_hash_table *htab;
4007 struct ppc_link_hash_entry *eh;
4008 struct ppc_link_hash_entry *fdh;
4010 if (h->root.type == bfd_link_hash_indirect)
4013 if (h->root.type == bfd_link_hash_warning)
4014 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4016 if (h->root.root.string[0] != '.')
4020 htab = ppc_hash_table (info);
4021 eh = (struct ppc_link_hash_entry *) h;
4022 fdh = get_fdh (eh, htab);
4025 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4026 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4027 if (entry_vis < descr_vis)
4028 fdh->elf.other += entry_vis - descr_vis;
4029 else if (entry_vis > descr_vis)
4030 eh->elf.other += descr_vis - entry_vis;
4032 if (eh->elf.root.type == bfd_link_hash_undefined)
4034 eh->elf.root.type = bfd_link_hash_undefweak;
4035 eh->was_undefined = 1;
4036 htab->twiddled_syms = 1;
4044 ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4045 struct bfd_link_info *info)
4047 struct ppc_link_hash_table *htab;
4049 htab = ppc_hash_table (info);
4050 if (!is_ppc64_elf_target (htab->elf.root.creator))
4053 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, info);
4055 /* We need to fix the undefs list for any syms we have twiddled to
4057 if (htab->twiddled_syms)
4059 struct bfd_link_hash_entry **pun;
4061 pun = &htab->elf.root.undefs;
4062 while (*pun != NULL)
4064 struct bfd_link_hash_entry *h = *pun;
4066 if (h->type != bfd_link_hash_undefined
4067 && h->type != bfd_link_hash_common)
4069 *pun = h->u.undef.next;
4070 h->u.undef.next = NULL;
4071 if (h == htab->elf.root.undefs_tail)
4073 if (pun == &htab->elf.root.undefs)
4074 htab->elf.root.undefs_tail = NULL;
4076 /* pun points at an u.undef.next field. Go back to
4077 the start of the link_hash_entry. */
4078 htab->elf.root.undefs_tail = (struct bfd_link_hash_entry *)
4079 ((char *) pun - ((char *) &h->u.undef.next - (char *) h));
4084 pun = &h->u.undef.next;
4087 htab->twiddled_syms = 0;
4093 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4094 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4096 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4097 char *local_got_tls_masks;
4099 if (local_got_ents == NULL)
4101 bfd_size_type size = symtab_hdr->sh_info;
4103 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4104 local_got_ents = bfd_zalloc (abfd, size);
4105 if (local_got_ents == NULL)
4107 elf_local_got_ents (abfd) = local_got_ents;
4110 if ((tls_type & TLS_EXPLICIT) == 0)
4112 struct got_entry *ent;
4114 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4115 if (ent->addend == r_addend
4116 && ent->owner == abfd
4117 && ent->tls_type == tls_type)
4121 bfd_size_type amt = sizeof (*ent);
4122 ent = bfd_alloc (abfd, amt);
4125 ent->next = local_got_ents[r_symndx];
4126 ent->addend = r_addend;
4128 ent->tls_type = tls_type;
4129 ent->got.refcount = 0;
4130 local_got_ents[r_symndx] = ent;
4132 ent->got.refcount += 1;
4135 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4136 local_got_tls_masks[r_symndx] |= tls_type;
4141 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4143 struct plt_entry *ent;
4145 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4146 if (ent->addend == addend)
4150 bfd_size_type amt = sizeof (*ent);
4151 ent = bfd_alloc (abfd, amt);
4154 ent->next = eh->elf.plt.plist;
4155 ent->addend = addend;
4156 ent->plt.refcount = 0;
4157 eh->elf.plt.plist = ent;
4159 ent->plt.refcount += 1;
4160 eh->elf.needs_plt = 1;
4165 /* Look through the relocs for a section during the first phase, and
4166 calculate needed space in the global offset table, procedure
4167 linkage table, and dynamic reloc sections. */
4170 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4171 asection *sec, const Elf_Internal_Rela *relocs)
4173 struct ppc_link_hash_table *htab;
4174 Elf_Internal_Shdr *symtab_hdr;
4175 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4176 const Elf_Internal_Rela *rel;
4177 const Elf_Internal_Rela *rel_end;
4179 asection **opd_sym_map;
4181 if (info->relocatable)
4184 /* Don't do anything special with non-loaded, non-alloced sections.
4185 In particular, any relocs in such sections should not affect GOT
4186 and PLT reference counting (ie. we don't allow them to create GOT
4187 or PLT entries), there's no possibility or desire to optimize TLS
4188 relocs, and there's not much point in propagating relocs to shared
4189 libs that the dynamic linker won't relocate. */
4190 if ((sec->flags & SEC_ALLOC) == 0)
4193 htab = ppc_hash_table (info);
4194 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4196 sym_hashes = elf_sym_hashes (abfd);
4197 sym_hashes_end = (sym_hashes
4198 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4199 - symtab_hdr->sh_info);
4203 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4205 /* Garbage collection needs some extra help with .opd sections.
4206 We don't want to necessarily keep everything referenced by
4207 relocs in .opd, as that would keep all functions. Instead,
4208 if we reference an .opd symbol (a function descriptor), we
4209 want to keep the function code symbol's section. This is
4210 easy for global symbols, but for local syms we need to keep
4211 information about the associated function section. Later, if
4212 edit_opd deletes entries, we'll use this array to adjust
4213 local syms in .opd. */
4215 asection *func_section;
4220 amt = sec->size * sizeof (union opd_info) / 8;
4221 opd_sym_map = bfd_zalloc (abfd, amt);
4222 if (opd_sym_map == NULL)
4224 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
4227 if (htab->sfpr == NULL
4228 && !create_linkage_sections (htab->elf.dynobj, info))
4231 rel_end = relocs + sec->reloc_count;
4232 for (rel = relocs; rel < rel_end; rel++)
4234 unsigned long r_symndx;
4235 struct elf_link_hash_entry *h;
4236 enum elf_ppc64_reloc_type r_type;
4239 r_symndx = ELF64_R_SYM (rel->r_info);
4240 if (r_symndx < symtab_hdr->sh_info)
4243 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4245 r_type = ELF64_R_TYPE (rel->r_info);
4248 case R_PPC64_GOT_TLSLD16:
4249 case R_PPC64_GOT_TLSLD16_LO:
4250 case R_PPC64_GOT_TLSLD16_HI:
4251 case R_PPC64_GOT_TLSLD16_HA:
4252 ppc64_tlsld_got (abfd)->refcount += 1;
4253 tls_type = TLS_TLS | TLS_LD;
4256 case R_PPC64_GOT_TLSGD16:
4257 case R_PPC64_GOT_TLSGD16_LO:
4258 case R_PPC64_GOT_TLSGD16_HI:
4259 case R_PPC64_GOT_TLSGD16_HA:
4260 tls_type = TLS_TLS | TLS_GD;
4263 case R_PPC64_GOT_TPREL16_DS:
4264 case R_PPC64_GOT_TPREL16_LO_DS:
4265 case R_PPC64_GOT_TPREL16_HI:
4266 case R_PPC64_GOT_TPREL16_HA:
4268 info->flags |= DF_STATIC_TLS;
4269 tls_type = TLS_TLS | TLS_TPREL;
4272 case R_PPC64_GOT_DTPREL16_DS:
4273 case R_PPC64_GOT_DTPREL16_LO_DS:
4274 case R_PPC64_GOT_DTPREL16_HI:
4275 case R_PPC64_GOT_DTPREL16_HA:
4276 tls_type = TLS_TLS | TLS_DTPREL;
4278 sec->has_tls_reloc = 1;
4282 case R_PPC64_GOT16_DS:
4283 case R_PPC64_GOT16_HA:
4284 case R_PPC64_GOT16_HI:
4285 case R_PPC64_GOT16_LO:
4286 case R_PPC64_GOT16_LO_DS:
4287 /* This symbol requires a global offset table entry. */
4288 sec->has_gp_reloc = 1;
4289 if (ppc64_elf_tdata (abfd)->got == NULL
4290 && !create_got_section (abfd, info))
4295 struct ppc_link_hash_entry *eh;
4296 struct got_entry *ent;
4298 eh = (struct ppc_link_hash_entry *) h;
4299 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4300 if (ent->addend == rel->r_addend
4301 && ent->owner == abfd
4302 && ent->tls_type == tls_type)
4306 bfd_size_type amt = sizeof (*ent);
4307 ent = bfd_alloc (abfd, amt);
4310 ent->next = eh->elf.got.glist;
4311 ent->addend = rel->r_addend;
4313 ent->tls_type = tls_type;
4314 ent->got.refcount = 0;
4315 eh->elf.got.glist = ent;
4317 ent->got.refcount += 1;
4318 eh->tls_mask |= tls_type;
4321 /* This is a global offset table entry for a local symbol. */
4322 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4323 rel->r_addend, tls_type))
4327 case R_PPC64_PLT16_HA:
4328 case R_PPC64_PLT16_HI:
4329 case R_PPC64_PLT16_LO:
4332 /* This symbol requires a procedure linkage table entry. We
4333 actually build the entry in adjust_dynamic_symbol,
4334 because this might be a case of linking PIC code without
4335 linking in any dynamic objects, in which case we don't
4336 need to generate a procedure linkage table after all. */
4339 /* It does not make sense to have a procedure linkage
4340 table entry for a local symbol. */
4341 bfd_set_error (bfd_error_bad_value);
4345 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4350 /* The following relocations don't need to propagate the
4351 relocation if linking a shared object since they are
4352 section relative. */
4353 case R_PPC64_SECTOFF:
4354 case R_PPC64_SECTOFF_LO:
4355 case R_PPC64_SECTOFF_HI:
4356 case R_PPC64_SECTOFF_HA:
4357 case R_PPC64_SECTOFF_DS:
4358 case R_PPC64_SECTOFF_LO_DS:
4359 case R_PPC64_DTPREL16:
4360 case R_PPC64_DTPREL16_LO:
4361 case R_PPC64_DTPREL16_HI:
4362 case R_PPC64_DTPREL16_HA:
4363 case R_PPC64_DTPREL16_DS:
4364 case R_PPC64_DTPREL16_LO_DS:
4365 case R_PPC64_DTPREL16_HIGHER:
4366 case R_PPC64_DTPREL16_HIGHERA:
4367 case R_PPC64_DTPREL16_HIGHEST:
4368 case R_PPC64_DTPREL16_HIGHESTA:
4373 case R_PPC64_TOC16_LO:
4374 case R_PPC64_TOC16_HI:
4375 case R_PPC64_TOC16_HA:
4376 case R_PPC64_TOC16_DS:
4377 case R_PPC64_TOC16_LO_DS:
4378 sec->has_gp_reloc = 1;
4381 /* This relocation describes the C++ object vtable hierarchy.
4382 Reconstruct it for later use during GC. */
4383 case R_PPC64_GNU_VTINHERIT:
4384 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4388 /* This relocation describes which C++ vtable entries are actually
4389 used. Record for later use during GC. */
4390 case R_PPC64_GNU_VTENTRY:
4391 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4396 case R_PPC64_REL14_BRTAKEN:
4397 case R_PPC64_REL14_BRNTAKEN:
4398 htab->has_14bit_branch = 1;
4404 /* We may need a .plt entry if the function this reloc
4405 refers to is in a shared lib. */
4406 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4409 if (h == &htab->tls_get_addr->elf
4410 || h == &htab->tls_get_addr_fd->elf)
4411 sec->has_tls_reloc = 1;
4412 else if (htab->tls_get_addr == NULL
4413 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
4414 && (h->root.root.string[15] == 0
4415 || h->root.root.string[15] == '@'))
4417 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4418 sec->has_tls_reloc = 1;
4420 else if (htab->tls_get_addr_fd == NULL
4421 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4422 && (h->root.root.string[14] == 0
4423 || h->root.root.string[14] == '@'))
4425 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4426 sec->has_tls_reloc = 1;
4431 case R_PPC64_TPREL64:
4432 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4434 info->flags |= DF_STATIC_TLS;
4437 case R_PPC64_DTPMOD64:
4438 if (rel + 1 < rel_end
4439 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4440 && rel[1].r_offset == rel->r_offset + 8)
4441 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4443 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4446 case R_PPC64_DTPREL64:
4447 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4449 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4450 && rel[-1].r_offset == rel->r_offset - 8)
4451 /* This is the second reloc of a dtpmod, dtprel pair.
4452 Don't mark with TLS_DTPREL. */
4456 sec->has_tls_reloc = 1;
4459 struct ppc_link_hash_entry *eh;
4460 eh = (struct ppc_link_hash_entry *) h;
4461 eh->tls_mask |= tls_type;
4464 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4465 rel->r_addend, tls_type))
4468 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4470 /* One extra to simplify get_tls_mask. */
4471 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4472 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4473 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4476 BFD_ASSERT (rel->r_offset % 8 == 0);
4477 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4479 /* Mark the second slot of a GD or LD entry.
4480 -1 to indicate GD and -2 to indicate LD. */
4481 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4482 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4483 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4484 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4487 case R_PPC64_TPREL16:
4488 case R_PPC64_TPREL16_LO:
4489 case R_PPC64_TPREL16_HI:
4490 case R_PPC64_TPREL16_HA:
4491 case R_PPC64_TPREL16_DS:
4492 case R_PPC64_TPREL16_LO_DS:
4493 case R_PPC64_TPREL16_HIGHER:
4494 case R_PPC64_TPREL16_HIGHERA:
4495 case R_PPC64_TPREL16_HIGHEST:
4496 case R_PPC64_TPREL16_HIGHESTA:
4499 info->flags |= DF_STATIC_TLS;
4504 case R_PPC64_ADDR64:
4505 if (opd_sym_map != NULL
4506 && rel + 1 < rel_end
4507 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4511 if (h->root.root.string[0] == '.'
4512 && h->root.root.string[1] != 0
4513 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4516 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4522 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4527 opd_sym_map[rel->r_offset / 8] = s;
4535 case R_PPC64_ADDR14:
4536 case R_PPC64_ADDR14_BRNTAKEN:
4537 case R_PPC64_ADDR14_BRTAKEN:
4538 case R_PPC64_ADDR16:
4539 case R_PPC64_ADDR16_DS:
4540 case R_PPC64_ADDR16_HA:
4541 case R_PPC64_ADDR16_HI:
4542 case R_PPC64_ADDR16_HIGHER:
4543 case R_PPC64_ADDR16_HIGHERA:
4544 case R_PPC64_ADDR16_HIGHEST:
4545 case R_PPC64_ADDR16_HIGHESTA:
4546 case R_PPC64_ADDR16_LO:
4547 case R_PPC64_ADDR16_LO_DS:
4548 case R_PPC64_ADDR24:
4549 case R_PPC64_ADDR32:
4550 case R_PPC64_UADDR16:
4551 case R_PPC64_UADDR32:
4552 case R_PPC64_UADDR64:
4554 if (h != NULL && !info->shared)
4555 /* We may need a copy reloc. */
4558 /* Don't propagate .opd relocs. */
4559 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4562 /* If we are creating a shared library, and this is a reloc
4563 against a global symbol, or a non PC relative reloc
4564 against a local symbol, then we need to copy the reloc
4565 into the shared library. However, if we are linking with
4566 -Bsymbolic, we do not need to copy a reloc against a
4567 global symbol which is defined in an object we are
4568 including in the link (i.e., DEF_REGULAR is set). At
4569 this point we have not seen all the input files, so it is
4570 possible that DEF_REGULAR is not set now but will be set
4571 later (it is never cleared). In case of a weak definition,
4572 DEF_REGULAR may be cleared later by a strong definition in
4573 a shared library. We account for that possibility below by
4574 storing information in the dyn_relocs field of the hash
4575 table entry. A similar situation occurs when creating
4576 shared libraries and symbol visibility changes render the
4579 If on the other hand, we are creating an executable, we
4580 may need to keep relocations for symbols satisfied by a
4581 dynamic library if we manage to avoid copy relocs for the
4585 && (MUST_BE_DYN_RELOC (r_type)
4587 && (! info->symbolic
4588 || h->root.type == bfd_link_hash_defweak
4589 || !h->def_regular))))
4590 || (ELIMINATE_COPY_RELOCS
4593 && (h->root.type == bfd_link_hash_defweak
4594 || !h->def_regular)))
4596 struct ppc_dyn_relocs *p;
4597 struct ppc_dyn_relocs **head;
4599 /* We must copy these reloc types into the output file.
4600 Create a reloc section in dynobj and make room for
4607 name = (bfd_elf_string_from_elf_section
4609 elf_elfheader (abfd)->e_shstrndx,
4610 elf_section_data (sec)->rel_hdr.sh_name));
4614 if (strncmp (name, ".rela", 5) != 0
4615 || strcmp (bfd_get_section_name (abfd, sec),
4618 (*_bfd_error_handler)
4619 (_("%B: bad relocation section name `%s\'"),
4621 bfd_set_error (bfd_error_bad_value);
4624 dynobj = htab->elf.dynobj;
4625 sreloc = bfd_get_section_by_name (dynobj, name);
4630 sreloc = bfd_make_section (dynobj, name);
4631 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4632 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4633 if ((sec->flags & SEC_ALLOC) != 0)
4634 flags |= SEC_ALLOC | SEC_LOAD;
4636 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4637 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4640 elf_section_data (sec)->sreloc = sreloc;
4643 /* If this is a global symbol, we count the number of
4644 relocations we need for this symbol. */
4647 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4651 /* Track dynamic relocs needed for local syms too.
4652 We really need local syms available to do this
4656 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4661 head = ((struct ppc_dyn_relocs **)
4662 &elf_section_data (s)->local_dynrel);
4666 if (p == NULL || p->sec != sec)
4668 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4679 if (!MUST_BE_DYN_RELOC (r_type))
4692 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4693 of the code entry point, and its section. */
4696 opd_entry_value (asection *opd_sec,
4698 asection **code_sec,
4701 bfd *opd_bfd = opd_sec->owner;
4702 Elf_Internal_Rela *relocs;
4703 Elf_Internal_Rela *lo, *hi, *look;
4706 /* No relocs implies we are linking a --just-symbols object. */
4707 if (opd_sec->reloc_count == 0)
4711 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4712 return (bfd_vma) -1;
4714 if (code_sec != NULL)
4716 asection *sec, *likely = NULL;
4717 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4719 && (sec->flags & SEC_LOAD) != 0
4720 && (sec->flags & SEC_ALLOC) != 0)
4725 if (code_off != NULL)
4726 *code_off = val - likely->vma;
4732 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4734 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4736 /* Go find the opd reloc at the sym address. */
4738 BFD_ASSERT (lo != NULL);
4739 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4743 look = lo + (hi - lo) / 2;
4744 if (look->r_offset < offset)
4746 else if (look->r_offset > offset)
4750 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4751 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4752 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4754 unsigned long symndx = ELF64_R_SYM (look->r_info);
4757 if (symndx < symtab_hdr->sh_info)
4759 Elf_Internal_Sym *sym;
4761 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4764 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4765 symtab_hdr->sh_info,
4766 0, NULL, NULL, NULL);
4769 symtab_hdr->contents = (bfd_byte *) sym;
4773 val = sym->st_value;
4775 if ((sym->st_shndx != SHN_UNDEF
4776 && sym->st_shndx < SHN_LORESERVE)
4777 || sym->st_shndx > SHN_HIRESERVE)
4778 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4779 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4783 struct elf_link_hash_entry **sym_hashes;
4784 struct elf_link_hash_entry *rh;
4786 sym_hashes = elf_sym_hashes (opd_bfd);
4787 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4788 while (rh->root.type == bfd_link_hash_indirect
4789 || rh->root.type == bfd_link_hash_warning)
4790 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4791 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4792 || rh->root.type == bfd_link_hash_defweak);
4793 val = rh->root.u.def.value;
4794 sec = rh->root.u.def.section;
4796 val += look->r_addend;
4797 if (code_off != NULL)
4799 if (code_sec != NULL)
4801 if (sec != NULL && sec->output_section != NULL)
4802 val += sec->output_section->vma + sec->output_offset;
4811 /* Return the section that should be marked against GC for a given
4815 ppc64_elf_gc_mark_hook (asection *sec,
4816 struct bfd_link_info *info,
4817 Elf_Internal_Rela *rel,
4818 struct elf_link_hash_entry *h,
4819 Elf_Internal_Sym *sym)
4823 /* First mark all our entry sym sections. */
4824 if (info->gc_sym_list != NULL)
4826 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4827 struct bfd_sym_chain *sym = info->gc_sym_list;
4829 info->gc_sym_list = NULL;
4832 struct ppc_link_hash_entry *eh;
4834 eh = (struct ppc_link_hash_entry *)
4835 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4838 if (eh->elf.root.type != bfd_link_hash_defined
4839 && eh->elf.root.type != bfd_link_hash_defweak)
4842 if (eh->is_func_descriptor)
4843 rsec = eh->oh->elf.root.u.def.section;
4844 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4845 && opd_entry_value (eh->elf.root.u.def.section,
4846 eh->elf.root.u.def.value,
4847 &rsec, NULL) != (bfd_vma) -1)
4853 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4855 rsec = eh->elf.root.u.def.section;
4857 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4861 while (sym != NULL);
4864 /* Syms return NULL if we're marking .opd, so we avoid marking all
4865 function sections, as all functions are referenced in .opd. */
4867 if (get_opd_info (sec) != NULL)
4872 enum elf_ppc64_reloc_type r_type;
4873 struct ppc_link_hash_entry *eh;
4875 r_type = ELF64_R_TYPE (rel->r_info);
4878 case R_PPC64_GNU_VTINHERIT:
4879 case R_PPC64_GNU_VTENTRY:
4883 switch (h->root.type)
4885 case bfd_link_hash_defined:
4886 case bfd_link_hash_defweak:
4887 eh = (struct ppc_link_hash_entry *) h;
4888 if (eh->oh != NULL && eh->oh->is_func_descriptor)
4891 /* Function descriptor syms cause the associated
4892 function code sym section to be marked. */
4893 if (eh->is_func_descriptor)
4895 /* They also mark their opd section. */
4896 if (!eh->elf.root.u.def.section->gc_mark)
4897 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4898 ppc64_elf_gc_mark_hook);
4900 rsec = eh->oh->elf.root.u.def.section;
4902 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4903 && opd_entry_value (eh->elf.root.u.def.section,
4904 eh->elf.root.u.def.value,
4905 &rsec, NULL) != (bfd_vma) -1)
4907 if (!eh->elf.root.u.def.section->gc_mark)
4908 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4909 ppc64_elf_gc_mark_hook);
4912 rsec = h->root.u.def.section;
4915 case bfd_link_hash_common:
4916 rsec = h->root.u.c.p->section;
4926 asection **opd_sym_section;
4928 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4929 opd_sym_section = get_opd_info (rsec);
4930 if (opd_sym_section != NULL)
4933 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4935 rsec = opd_sym_section[sym->st_value / 8];
4942 /* Update the .got, .plt. and dynamic reloc reference counts for the
4943 section being removed. */
4946 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4947 asection *sec, const Elf_Internal_Rela *relocs)
4949 struct ppc_link_hash_table *htab;
4950 Elf_Internal_Shdr *symtab_hdr;
4951 struct elf_link_hash_entry **sym_hashes;
4952 struct got_entry **local_got_ents;
4953 const Elf_Internal_Rela *rel, *relend;
4955 if ((sec->flags & SEC_ALLOC) == 0)
4958 elf_section_data (sec)->local_dynrel = NULL;
4960 htab = ppc_hash_table (info);
4961 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4962 sym_hashes = elf_sym_hashes (abfd);
4963 local_got_ents = elf_local_got_ents (abfd);
4965 relend = relocs + sec->reloc_count;
4966 for (rel = relocs; rel < relend; rel++)
4968 unsigned long r_symndx;
4969 enum elf_ppc64_reloc_type r_type;
4970 struct elf_link_hash_entry *h = NULL;
4973 r_symndx = ELF64_R_SYM (rel->r_info);
4974 r_type = ELF64_R_TYPE (rel->r_info);
4975 if (r_symndx >= symtab_hdr->sh_info)
4977 struct ppc_link_hash_entry *eh;
4978 struct ppc_dyn_relocs **pp;
4979 struct ppc_dyn_relocs *p;
4981 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4982 eh = (struct ppc_link_hash_entry *) h;
4984 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4987 /* Everything must go for SEC. */
4995 case R_PPC64_GOT_TLSLD16:
4996 case R_PPC64_GOT_TLSLD16_LO:
4997 case R_PPC64_GOT_TLSLD16_HI:
4998 case R_PPC64_GOT_TLSLD16_HA:
4999 ppc64_tlsld_got (abfd)->refcount -= 1;
5000 tls_type = TLS_TLS | TLS_LD;
5003 case R_PPC64_GOT_TLSGD16:
5004 case R_PPC64_GOT_TLSGD16_LO:
5005 case R_PPC64_GOT_TLSGD16_HI:
5006 case R_PPC64_GOT_TLSGD16_HA:
5007 tls_type = TLS_TLS | TLS_GD;
5010 case R_PPC64_GOT_TPREL16_DS:
5011 case R_PPC64_GOT_TPREL16_LO_DS:
5012 case R_PPC64_GOT_TPREL16_HI:
5013 case R_PPC64_GOT_TPREL16_HA:
5014 tls_type = TLS_TLS | TLS_TPREL;
5017 case R_PPC64_GOT_DTPREL16_DS:
5018 case R_PPC64_GOT_DTPREL16_LO_DS:
5019 case R_PPC64_GOT_DTPREL16_HI:
5020 case R_PPC64_GOT_DTPREL16_HA:
5021 tls_type = TLS_TLS | TLS_DTPREL;
5025 case R_PPC64_GOT16_DS:
5026 case R_PPC64_GOT16_HA:
5027 case R_PPC64_GOT16_HI:
5028 case R_PPC64_GOT16_LO:
5029 case R_PPC64_GOT16_LO_DS:
5032 struct got_entry *ent;
5037 ent = local_got_ents[r_symndx];
5039 for (; ent != NULL; ent = ent->next)
5040 if (ent->addend == rel->r_addend
5041 && ent->owner == abfd
5042 && ent->tls_type == tls_type)
5046 if (ent->got.refcount > 0)
5047 ent->got.refcount -= 1;
5051 case R_PPC64_PLT16_HA:
5052 case R_PPC64_PLT16_HI:
5053 case R_PPC64_PLT16_LO:
5057 case R_PPC64_REL14_BRNTAKEN:
5058 case R_PPC64_REL14_BRTAKEN:
5062 struct plt_entry *ent;
5064 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5065 if (ent->addend == rel->r_addend)
5069 if (ent->plt.refcount > 0)
5070 ent->plt.refcount -= 1;
5081 /* The maximum size of .sfpr. */
5082 #define SFPR_MAX (218*4)
5084 struct sfpr_def_parms
5086 const char name[12];
5087 unsigned char lo, hi;
5088 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5089 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5092 /* Auto-generate _save*, _rest* functions in .sfpr. */
5095 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5097 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5099 size_t len = strlen (parm->name);
5100 bfd_boolean writing = FALSE;
5103 memcpy (sym, parm->name, len);
5106 for (i = parm->lo; i <= parm->hi; i++)
5108 struct elf_link_hash_entry *h;
5110 sym[len + 0] = i / 10 + '0';
5111 sym[len + 1] = i % 10 + '0';
5112 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5116 h->root.type = bfd_link_hash_defined;
5117 h->root.u.def.section = htab->sfpr;
5118 h->root.u.def.value = htab->sfpr->size;
5121 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5123 if (htab->sfpr->contents == NULL)
5125 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5126 if (htab->sfpr->contents == NULL)
5132 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5134 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5136 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5137 htab->sfpr->size = p - htab->sfpr->contents;
5145 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5147 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5152 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5154 p = savegpr0 (abfd, p, r);
5155 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5157 bfd_put_32 (abfd, BLR, p);
5162 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5164 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5169 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5171 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5173 p = restgpr0 (abfd, p, r);
5174 bfd_put_32 (abfd, MTLR_R0, p);
5178 p = restgpr0 (abfd, p, 30);
5179 p = restgpr0 (abfd, p, 31);
5181 bfd_put_32 (abfd, BLR, p);
5186 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5188 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5193 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5195 p = savegpr1 (abfd, p, r);
5196 bfd_put_32 (abfd, BLR, p);
5201 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5203 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5208 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5210 p = restgpr1 (abfd, p, r);
5211 bfd_put_32 (abfd, BLR, p);
5216 savefpr (bfd *abfd, bfd_byte *p, int r)
5218 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5223 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5225 p = savefpr (abfd, p, r);
5226 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5228 bfd_put_32 (abfd, BLR, p);
5233 restfpr (bfd *abfd, bfd_byte *p, int r)
5235 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5240 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5242 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5244 p = restfpr (abfd, p, r);
5245 bfd_put_32 (abfd, MTLR_R0, p);
5249 p = restfpr (abfd, p, 30);
5250 p = restfpr (abfd, p, 31);
5252 bfd_put_32 (abfd, BLR, p);
5257 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5259 p = savefpr (abfd, p, r);
5260 bfd_put_32 (abfd, BLR, p);
5265 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5267 p = restfpr (abfd, p, r);
5268 bfd_put_32 (abfd, BLR, p);
5273 savevr (bfd *abfd, bfd_byte *p, int r)
5275 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5277 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5282 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5284 p = savevr (abfd, p, r);
5285 bfd_put_32 (abfd, BLR, p);
5290 restvr (bfd *abfd, bfd_byte *p, int r)
5292 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5294 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5299 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5301 p = restvr (abfd, p, r);
5302 bfd_put_32 (abfd, BLR, p);
5306 /* Called via elf_link_hash_traverse to transfer dynamic linking
5307 information on function code symbol entries to their corresponding
5308 function descriptor symbol entries. */
5311 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5313 struct bfd_link_info *info;
5314 struct ppc_link_hash_table *htab;
5315 struct plt_entry *ent;
5316 struct ppc_link_hash_entry *fh;
5317 struct ppc_link_hash_entry *fdh;
5318 bfd_boolean force_local;
5320 fh = (struct ppc_link_hash_entry *) h;
5321 if (fh->elf.root.type == bfd_link_hash_indirect)
5324 if (fh->elf.root.type == bfd_link_hash_warning)
5325 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5328 htab = ppc_hash_table (info);
5330 /* Resolve undefined references to dot-symbols as the value
5331 in the function descriptor, if we have one in a regular object.
5332 This is to satisfy cases like ".quad .foo". Calls to functions
5333 in dynamic objects are handled elsewhere. */
5334 if (fh->elf.root.type == bfd_link_hash_undefweak
5335 && fh->was_undefined
5336 && (fh->oh->elf.root.type == bfd_link_hash_defined
5337 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5338 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5339 && opd_entry_value (fh->oh->elf.root.u.def.section,
5340 fh->oh->elf.root.u.def.value,
5341 &fh->elf.root.u.def.section,
5342 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5344 fh->elf.root.type = fh->oh->elf.root.type;
5345 fh->elf.forced_local = 1;
5348 /* If this is a function code symbol, transfer dynamic linking
5349 information to the function descriptor symbol. */
5353 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5354 if (ent->plt.refcount > 0)
5357 || fh->elf.root.root.string[0] != '.'
5358 || fh->elf.root.root.string[1] == '\0')
5361 /* Find the corresponding function descriptor symbol. Create it
5362 as undefined if necessary. */
5364 fdh = get_fdh (fh, htab);
5366 while (fdh->elf.root.type == bfd_link_hash_indirect
5367 || fdh->elf.root.type == bfd_link_hash_warning)
5368 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5372 && (fh->elf.root.type == bfd_link_hash_undefined
5373 || fh->elf.root.type == bfd_link_hash_undefweak))
5377 struct bfd_link_hash_entry *bh;
5379 abfd = fh->elf.root.u.undef.abfd;
5380 newsym = bfd_make_empty_symbol (abfd);
5381 newsym->name = fh->elf.root.root.string + 1;
5382 newsym->section = bfd_und_section_ptr;
5384 newsym->flags = BSF_OBJECT;
5385 if (fh->elf.root.type == bfd_link_hash_undefweak)
5386 newsym->flags |= BSF_WEAK;
5388 bh = &fdh->elf.root;
5389 if ( !(_bfd_generic_link_add_one_symbol
5390 (info, abfd, newsym->name, newsym->flags,
5391 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
5395 fdh = (struct ppc_link_hash_entry *) bh;
5396 fdh->elf.non_elf = 0;
5398 fdh->elf.type = STT_OBJECT;
5402 && !fdh->elf.forced_local
5404 || fdh->elf.def_dynamic
5405 || fdh->elf.ref_dynamic
5406 || (fdh->elf.root.type == bfd_link_hash_undefweak
5407 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5409 if (fdh->elf.dynindx == -1)
5410 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5412 fdh->elf.ref_regular |= fh->elf.ref_regular;
5413 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5414 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5415 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
5416 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5418 struct plt_entry **ep = &fdh->elf.plt.plist;
5421 *ep = fh->elf.plt.plist;
5422 fh->elf.plt.plist = NULL;
5423 fdh->elf.needs_plt = 1;
5425 fdh->is_func_descriptor = 1;
5430 /* Now that the info is on the function descriptor, clear the
5431 function code sym info. Any function code syms for which we
5432 don't have a definition in a regular file, we force local.
5433 This prevents a shared library from exporting syms that have
5434 been imported from another library. Function code syms that
5435 are really in the library we must leave global to prevent the
5436 linker dragging in a definition from a static library. */
5439 && (!fh->elf.def_regular
5441 || !fdh->elf.def_regular
5442 || fdh->elf.forced_local));
5443 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5448 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5449 this hook to a) provide some gcc support functions, and b) transfer
5450 dynamic linking information gathered so far on function code symbol
5451 entries, to their corresponding function descriptor symbol entries. */
5454 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5455 struct bfd_link_info *info)
5457 struct ppc_link_hash_table *htab;
5459 const struct sfpr_def_parms funcs[] =
5461 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5462 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5463 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5464 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5465 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5466 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5467 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5468 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5469 { "._savef", 14, 31, savefpr, savefpr1_tail },
5470 { "._restf", 14, 31, restfpr, restfpr1_tail },
5471 { "_savevr_", 20, 31, savevr, savevr_tail },
5472 { "_restvr_", 20, 31, restvr, restvr_tail }
5475 htab = ppc_hash_table (info);
5476 if (htab->sfpr == NULL)
5477 /* We don't have any relocs. */
5480 /* Provide any missing _save* and _rest* functions. */
5481 htab->sfpr->size = 0;
5482 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5483 if (!sfpr_define (info, &funcs[i]))
5486 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5488 if (htab->sfpr->size == 0)
5489 _bfd_strip_section_from_output (info, htab->sfpr);
5494 /* Adjust a symbol defined by a dynamic object and referenced by a
5495 regular object. The current definition is in some section of the
5496 dynamic object, but we're not including those sections. We have to
5497 change the definition to something the rest of the link can
5501 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5502 struct elf_link_hash_entry *h)
5504 struct ppc_link_hash_table *htab;
5506 unsigned int power_of_two;
5508 htab = ppc_hash_table (info);
5510 /* Deal with function syms. */
5511 if (h->type == STT_FUNC
5514 /* Clear procedure linkage table information for any symbol that
5515 won't need a .plt entry. */
5516 struct plt_entry *ent;
5517 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5518 if (ent->plt.refcount > 0)
5521 || SYMBOL_CALLS_LOCAL (info, h)
5522 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5523 && h->root.type == bfd_link_hash_undefweak))
5525 h->plt.plist = NULL;
5530 h->plt.plist = NULL;
5532 /* If this is a weak symbol, and there is a real definition, the
5533 processor independent code will have arranged for us to see the
5534 real definition first, and we can just use the same value. */
5535 if (h->u.weakdef != NULL)
5537 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5538 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5539 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5540 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5541 if (ELIMINATE_COPY_RELOCS)
5542 h->non_got_ref = h->u.weakdef->non_got_ref;
5546 /* If we are creating a shared library, we must presume that the
5547 only references to the symbol are via the global offset table.
5548 For such cases we need not do anything here; the relocations will
5549 be handled correctly by relocate_section. */
5553 /* If there are no references to this symbol that do not use the
5554 GOT, we don't need to generate a copy reloc. */
5555 if (!h->non_got_ref)
5558 if (ELIMINATE_COPY_RELOCS)
5560 struct ppc_link_hash_entry * eh;
5561 struct ppc_dyn_relocs *p;
5563 eh = (struct ppc_link_hash_entry *) h;
5564 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5566 s = p->sec->output_section;
5567 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5571 /* If we didn't find any dynamic relocs in read-only sections, then
5572 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5580 if (h->plt.plist != NULL)
5582 /* We should never get here, but unfortunately there are versions
5583 of gcc out there that improperly (for this ABI) put initialized
5584 function pointers, vtable refs and suchlike in read-only
5585 sections. Allow them to proceed, but warn that this might
5586 break at runtime. */
5587 (*_bfd_error_handler)
5588 (_("copy reloc against `%s' requires lazy plt linking; "
5589 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5590 h->root.root.string);
5593 /* This is a reference to a symbol defined by a dynamic object which
5594 is not a function. */
5596 /* We must allocate the symbol in our .dynbss section, which will
5597 become part of the .bss section of the executable. There will be
5598 an entry for this symbol in the .dynsym section. The dynamic
5599 object will contain position independent code, so all references
5600 from the dynamic object to this symbol will go through the global
5601 offset table. The dynamic linker will use the .dynsym entry to
5602 determine the address it must put in the global offset table, so
5603 both the dynamic object and the regular object will refer to the
5604 same memory location for the variable. */
5606 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5607 to copy the initial value out of the dynamic object and into the
5608 runtime process image. We need to remember the offset into the
5609 .rela.bss section we are going to use. */
5610 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5612 htab->relbss->size += sizeof (Elf64_External_Rela);
5616 /* We need to figure out the alignment required for this symbol. I
5617 have no idea how ELF linkers handle this. */
5618 power_of_two = bfd_log2 (h->size);
5619 if (power_of_two > 4)
5622 /* Apply the required alignment. */
5624 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5625 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5627 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5631 /* Define the symbol as being at this point in the section. */
5632 h->root.u.def.section = s;
5633 h->root.u.def.value = s->size;
5635 /* Increment the section size to make room for the symbol. */
5641 /* If given a function descriptor symbol, hide both the function code
5642 sym and the descriptor. */
5644 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5645 struct elf_link_hash_entry *h,
5646 bfd_boolean force_local)
5648 struct ppc_link_hash_entry *eh;
5649 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5651 eh = (struct ppc_link_hash_entry *) h;
5652 if (eh->is_func_descriptor)
5654 struct ppc_link_hash_entry *fh = eh->oh;
5659 struct ppc_link_hash_table *htab;
5662 /* We aren't supposed to use alloca in BFD because on
5663 systems which do not have alloca the version in libiberty
5664 calls xmalloc, which might cause the program to crash
5665 when it runs out of memory. This function doesn't have a
5666 return status, so there's no way to gracefully return an
5667 error. So cheat. We know that string[-1] can be safely
5668 accessed; It's either a string in an ELF string table,
5669 or allocated in an objalloc structure. */
5671 p = eh->elf.root.root.string - 1;
5674 htab = ppc_hash_table (info);
5675 fh = (struct ppc_link_hash_entry *)
5676 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5679 /* Unfortunately, if it so happens that the string we were
5680 looking for was allocated immediately before this string,
5681 then we overwrote the string terminator. That's the only
5682 reason the lookup should fail. */
5685 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5686 while (q >= eh->elf.root.root.string && *q == *p)
5688 if (q < eh->elf.root.root.string && *p == '.')
5689 fh = (struct ppc_link_hash_entry *)
5690 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5699 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5704 get_sym_h (struct elf_link_hash_entry **hp,
5705 Elf_Internal_Sym **symp,
5708 Elf_Internal_Sym **locsymsp,
5709 unsigned long r_symndx,
5712 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5714 if (r_symndx >= symtab_hdr->sh_info)
5716 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5717 struct elf_link_hash_entry *h;
5719 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5720 while (h->root.type == bfd_link_hash_indirect
5721 || h->root.type == bfd_link_hash_warning)
5722 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5730 if (symsecp != NULL)
5732 asection *symsec = NULL;
5733 if (h->root.type == bfd_link_hash_defined
5734 || h->root.type == bfd_link_hash_defweak)
5735 symsec = h->root.u.def.section;
5739 if (tls_maskp != NULL)
5741 struct ppc_link_hash_entry *eh;
5743 eh = (struct ppc_link_hash_entry *) h;
5744 *tls_maskp = &eh->tls_mask;
5749 Elf_Internal_Sym *sym;
5750 Elf_Internal_Sym *locsyms = *locsymsp;
5752 if (locsyms == NULL)
5754 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5755 if (locsyms == NULL)
5756 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5757 symtab_hdr->sh_info,
5758 0, NULL, NULL, NULL);
5759 if (locsyms == NULL)
5761 *locsymsp = locsyms;
5763 sym = locsyms + r_symndx;
5771 if (symsecp != NULL)
5773 asection *symsec = NULL;
5774 if ((sym->st_shndx != SHN_UNDEF
5775 && sym->st_shndx < SHN_LORESERVE)
5776 || sym->st_shndx > SHN_HIRESERVE)
5777 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5781 if (tls_maskp != NULL)
5783 struct got_entry **lgot_ents;
5787 lgot_ents = elf_local_got_ents (ibfd);
5788 if (lgot_ents != NULL)
5790 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5791 tls_mask = &lgot_masks[r_symndx];
5793 *tls_maskp = tls_mask;
5799 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5800 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5801 type suitable for optimization, and 1 otherwise. */
5804 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5805 Elf_Internal_Sym **locsymsp,
5806 const Elf_Internal_Rela *rel, bfd *ibfd)
5808 unsigned long r_symndx;
5810 struct elf_link_hash_entry *h;
5811 Elf_Internal_Sym *sym;
5815 r_symndx = ELF64_R_SYM (rel->r_info);
5816 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5819 if ((*tls_maskp != NULL && **tls_maskp != 0)
5821 || ppc64_elf_section_data (sec)->t_symndx == NULL)
5824 /* Look inside a TOC section too. */
5827 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5828 off = h->root.u.def.value;
5831 off = sym->st_value;
5832 off += rel->r_addend;
5833 BFD_ASSERT (off % 8 == 0);
5834 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
5835 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
5836 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5838 if (toc_symndx != NULL)
5839 *toc_symndx = r_symndx;
5841 || ((h->root.type == bfd_link_hash_defined
5842 || h->root.type == bfd_link_hash_defweak)
5843 && !h->def_dynamic))
5844 && (next_r == -1 || next_r == -2))
5849 /* Adjust all global syms defined in opd sections. In gcc generated
5850 code for the old ABI, these will already have been done. */
5853 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5855 struct ppc_link_hash_entry *eh;
5859 if (h->root.type == bfd_link_hash_indirect)
5862 if (h->root.type == bfd_link_hash_warning)
5863 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5865 if (h->root.type != bfd_link_hash_defined
5866 && h->root.type != bfd_link_hash_defweak)
5869 eh = (struct ppc_link_hash_entry *) h;
5870 if (eh->adjust_done)
5873 sym_sec = eh->elf.root.u.def.section;
5874 opd_adjust = get_opd_info (sym_sec);
5875 if (opd_adjust != NULL)
5877 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
5880 /* This entry has been deleted. */
5881 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5884 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5885 if (elf_discarded_section (dsec))
5887 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5891 eh->elf.root.u.def.value = 0;
5892 eh->elf.root.u.def.section = dsec;
5895 eh->elf.root.u.def.value += adjust;
5896 eh->adjust_done = 1;
5901 /* Remove unused Official Procedure Descriptor entries. Currently we
5902 only remove those associated with functions in discarded link-once
5903 sections, or weakly defined functions that have been overridden. It
5904 would be possible to remove many more entries for statically linked
5908 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
5909 bfd_boolean non_overlapping)
5912 bfd_boolean some_edited = FALSE;
5913 asection *need_pad = NULL;
5915 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5918 Elf_Internal_Rela *relstart, *rel, *relend;
5919 Elf_Internal_Shdr *symtab_hdr;
5920 Elf_Internal_Sym *local_syms;
5921 struct elf_link_hash_entry **sym_hashes;
5925 bfd_boolean need_edit, add_aux_fields;
5926 bfd_size_type cnt_16b = 0;
5928 sec = bfd_get_section_by_name (ibfd, ".opd");
5932 amt = sec->size * sizeof (long) / 8;
5933 opd_adjust = get_opd_info (sec);
5934 if (opd_adjust == NULL)
5936 /* check_relocs hasn't been called. Must be a ld -r link
5937 or --just-symbols object. */
5938 opd_adjust = bfd_zalloc (obfd, amt);
5939 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
5941 memset (opd_adjust, 0, amt);
5943 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
5946 if (sec->output_section == bfd_abs_section_ptr)
5949 /* Look through the section relocs. */
5950 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
5954 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5955 sym_hashes = elf_sym_hashes (ibfd);
5957 /* Read the relocations. */
5958 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5960 if (relstart == NULL)
5963 /* First run through the relocs to check they are sane, and to
5964 determine whether we need to edit this opd section. */
5968 relend = relstart + sec->reloc_count;
5969 for (rel = relstart; rel < relend; )
5971 enum elf_ppc64_reloc_type r_type;
5972 unsigned long r_symndx;
5974 struct elf_link_hash_entry *h;
5975 Elf_Internal_Sym *sym;
5977 /* .opd contains a regular array of 16 or 24 byte entries. We're
5978 only interested in the reloc pointing to a function entry
5980 if (rel->r_offset != offset
5981 || rel + 1 >= relend
5982 || (rel + 1)->r_offset != offset + 8)
5984 /* If someone messes with .opd alignment then after a
5985 "ld -r" we might have padding in the middle of .opd.
5986 Also, there's nothing to prevent someone putting
5987 something silly in .opd with the assembler. No .opd
5988 optimization for them! */
5990 (*_bfd_error_handler)
5991 (_("%B: .opd is not a regular array of opd entries"), ibfd);
5996 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
5997 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
5999 (*_bfd_error_handler)
6000 (_("%B: unexpected reloc type %u in .opd section"),
6006 r_symndx = ELF64_R_SYM (rel->r_info);
6007 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6011 if (sym_sec == NULL || sym_sec->owner == NULL)
6013 const char *sym_name;
6015 sym_name = h->root.root.string;
6017 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym);
6019 (*_bfd_error_handler)
6020 (_("%B: undefined sym `%s' in .opd section"),
6026 /* opd entries are always for functions defined in the
6027 current input bfd. If the symbol isn't defined in the
6028 input bfd, then we won't be using the function in this
6029 bfd; It must be defined in a linkonce section in another
6030 bfd, or is weak. It's also possible that we are
6031 discarding the function due to a linker script /DISCARD/,
6032 which we test for via the output_section. */
6033 if (sym_sec->owner != ibfd
6034 || sym_sec->output_section == bfd_abs_section_ptr)
6039 || (rel + 1 == relend && rel->r_offset == offset + 16))
6041 if (sec->size == offset + 24)
6046 if (rel == relend && sec->size == offset + 16)
6054 if (rel->r_offset == offset + 24)
6056 else if (rel->r_offset != offset + 16)
6058 else if (rel + 1 < relend
6059 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6060 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6065 else if (rel + 2 < relend
6066 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6067 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6076 add_aux_fields = non_overlapping && cnt_16b > 0;
6078 if (need_edit || add_aux_fields)
6080 Elf_Internal_Rela *write_rel;
6081 bfd_byte *rptr, *wptr;
6082 bfd_byte *new_contents = NULL;
6086 /* This seems a waste of time as input .opd sections are all
6087 zeros as generated by gcc, but I suppose there's no reason
6088 this will always be so. We might start putting something in
6089 the third word of .opd entries. */
6090 if ((sec->flags & SEC_IN_MEMORY) == 0)
6093 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6098 if (local_syms != NULL
6099 && symtab_hdr->contents != (unsigned char *) local_syms)
6101 if (elf_section_data (sec)->relocs != relstart)
6105 sec->contents = loc;
6106 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6109 elf_section_data (sec)->relocs = relstart;
6111 wptr = sec->contents;
6112 rptr = sec->contents;
6113 new_contents = sec->contents;
6117 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6118 if (new_contents == NULL)
6121 wptr = new_contents;
6124 write_rel = relstart;
6128 for (rel = relstart; rel < relend; rel++)
6130 unsigned long r_symndx;
6132 struct elf_link_hash_entry *h;
6133 Elf_Internal_Sym *sym;
6135 r_symndx = ELF64_R_SYM (rel->r_info);
6136 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6140 if (rel->r_offset == offset)
6142 struct ppc_link_hash_entry *fdh = NULL;
6144 /* See if the .opd entry is full 24 byte or
6145 16 byte (with fd_aux entry overlapped with next
6148 if ((rel + 2 == relend && sec->size == offset + 16)
6149 || (rel + 3 < relend
6150 && rel[2].r_offset == offset + 16
6151 && rel[3].r_offset == offset + 24
6152 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6153 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6157 && h->root.root.string[0] == '.')
6158 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6159 ppc_hash_table (info));
6161 skip = (sym_sec->owner != ibfd
6162 || sym_sec->output_section == bfd_abs_section_ptr);
6165 if (fdh != NULL && sym_sec->owner == ibfd)
6167 /* Arrange for the function descriptor sym
6169 fdh->elf.root.u.def.value = 0;
6170 fdh->elf.root.u.def.section = sym_sec;
6172 opd_adjust[rel->r_offset / 8] = -1;
6176 /* We'll be keeping this opd entry. */
6180 /* Redefine the function descriptor symbol to
6181 this location in the opd section. It is
6182 necessary to update the value here rather
6183 than using an array of adjustments as we do
6184 for local symbols, because various places
6185 in the generic ELF code use the value
6186 stored in u.def.value. */
6187 fdh->elf.root.u.def.value = wptr - new_contents;
6188 fdh->adjust_done = 1;
6191 /* Local syms are a bit tricky. We could
6192 tweak them as they can be cached, but
6193 we'd need to look through the local syms
6194 for the function descriptor sym which we
6195 don't have at the moment. So keep an
6196 array of adjustments. */
6197 opd_adjust[rel->r_offset / 8]
6198 = (wptr - new_contents) - (rptr - sec->contents);
6201 memcpy (wptr, rptr, opd_ent_size);
6202 wptr += opd_ent_size;
6203 if (add_aux_fields && opd_ent_size == 16)
6205 memset (wptr, '\0', 8);
6209 rptr += opd_ent_size;
6210 offset += opd_ent_size;
6215 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
6218 /* We won't be needing dynamic relocs here. */
6219 struct ppc_dyn_relocs **pp;
6220 struct ppc_dyn_relocs *p;
6223 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6224 else if (sym_sec != NULL)
6225 pp = ((struct ppc_dyn_relocs **)
6226 &elf_section_data (sym_sec)->local_dynrel);
6228 pp = ((struct ppc_dyn_relocs **)
6229 &elf_section_data (sec)->local_dynrel);
6230 while ((p = *pp) != NULL)
6245 /* We need to adjust any reloc offsets to point to the
6246 new opd entries. While we're at it, we may as well
6247 remove redundant relocs. */
6248 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6249 if (write_rel != rel)
6250 memcpy (write_rel, rel, sizeof (*rel));
6255 sec->size = wptr - new_contents;
6256 sec->reloc_count = write_rel - relstart;
6259 free (sec->contents);
6260 sec->contents = new_contents;
6263 /* Fudge the size too, as this is used later in
6264 elf_bfd_final_link if we are emitting relocs. */
6265 elf_section_data (sec)->rel_hdr.sh_size
6266 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6267 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6270 else if (elf_section_data (sec)->relocs != relstart)
6273 if (local_syms != NULL
6274 && symtab_hdr->contents != (unsigned char *) local_syms)
6276 if (!info->keep_memory)
6279 symtab_hdr->contents = (unsigned char *) local_syms;
6284 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6286 /* If we are doing a final link and the last .opd entry is just 16 byte
6287 long, add a 8 byte padding after it. */
6288 if (need_pad != NULL && !info->relocatable)
6292 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6294 BFD_ASSERT (need_pad->size > 0);
6296 p = bfd_malloc (need_pad->size + 8);
6300 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6301 p, 0, need_pad->size))
6304 need_pad->contents = p;
6305 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6309 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6313 need_pad->contents = p;
6316 memset (need_pad->contents + need_pad->size, 0, 8);
6317 need_pad->size += 8;
6323 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6326 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6328 struct ppc_link_hash_table *htab;
6330 htab = ppc_hash_table (info);
6331 if (htab->tls_get_addr != NULL)
6333 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6335 while (h->elf.root.type == bfd_link_hash_indirect
6336 || h->elf.root.type == bfd_link_hash_warning)
6337 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6339 htab->tls_get_addr = h;
6341 if (htab->tls_get_addr_fd == NULL
6343 && h->oh->is_func_descriptor)
6344 htab->tls_get_addr_fd = h->oh;
6347 if (htab->tls_get_addr_fd != NULL)
6349 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6351 while (h->elf.root.type == bfd_link_hash_indirect
6352 || h->elf.root.type == bfd_link_hash_warning)
6353 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6355 htab->tls_get_addr_fd = h;
6358 return _bfd_elf_tls_setup (obfd, info);
6361 /* Run through all the TLS relocs looking for optimization
6362 opportunities. The linker has been hacked (see ppc64elf.em) to do
6363 a preliminary section layout so that we know the TLS segment
6364 offsets. We can't optimize earlier because some optimizations need
6365 to know the tp offset, and we need to optimize before allocating
6366 dynamic relocations. */
6369 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6373 struct ppc_link_hash_table *htab;
6375 if (info->relocatable || info->shared)
6378 htab = ppc_hash_table (info);
6379 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6381 Elf_Internal_Sym *locsyms = NULL;
6383 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6384 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6386 Elf_Internal_Rela *relstart, *rel, *relend;
6387 int expecting_tls_get_addr;
6389 /* Read the relocations. */
6390 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6392 if (relstart == NULL)
6395 expecting_tls_get_addr = 0;
6396 relend = relstart + sec->reloc_count;
6397 for (rel = relstart; rel < relend; rel++)
6399 enum elf_ppc64_reloc_type r_type;
6400 unsigned long r_symndx;
6401 struct elf_link_hash_entry *h;
6402 Elf_Internal_Sym *sym;
6405 char tls_set, tls_clear, tls_type = 0;
6407 bfd_boolean ok_tprel, is_local;
6409 r_symndx = ELF64_R_SYM (rel->r_info);
6410 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6414 if (elf_section_data (sec)->relocs != relstart)
6417 && (elf_tdata (ibfd)->symtab_hdr.contents
6418 != (unsigned char *) locsyms))
6425 if (h->root.type != bfd_link_hash_defined
6426 && h->root.type != bfd_link_hash_defweak)
6428 value = h->root.u.def.value;
6431 /* Symbols referenced by TLS relocs must be of type
6432 STT_TLS. So no need for .opd local sym adjust. */
6433 value = sym->st_value;
6441 value += sym_sec->output_offset;
6442 value += sym_sec->output_section->vma;
6443 value -= htab->elf.tls_sec->vma;
6444 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6445 < (bfd_vma) 1 << 32);
6448 r_type = ELF64_R_TYPE (rel->r_info);
6451 case R_PPC64_GOT_TLSLD16:
6452 case R_PPC64_GOT_TLSLD16_LO:
6453 case R_PPC64_GOT_TLSLD16_HI:
6454 case R_PPC64_GOT_TLSLD16_HA:
6455 /* These relocs should never be against a symbol
6456 defined in a shared lib. Leave them alone if
6457 that turns out to be the case. */
6458 ppc64_tlsld_got (ibfd)->refcount -= 1;
6465 tls_type = TLS_TLS | TLS_LD;
6466 expecting_tls_get_addr = 1;
6469 case R_PPC64_GOT_TLSGD16:
6470 case R_PPC64_GOT_TLSGD16_LO:
6471 case R_PPC64_GOT_TLSGD16_HI:
6472 case R_PPC64_GOT_TLSGD16_HA:
6478 tls_set = TLS_TLS | TLS_TPRELGD;
6480 tls_type = TLS_TLS | TLS_GD;
6481 expecting_tls_get_addr = 1;
6484 case R_PPC64_GOT_TPREL16_DS:
6485 case R_PPC64_GOT_TPREL16_LO_DS:
6486 case R_PPC64_GOT_TPREL16_HI:
6487 case R_PPC64_GOT_TPREL16_HA:
6488 expecting_tls_get_addr = 0;
6493 tls_clear = TLS_TPREL;
6494 tls_type = TLS_TLS | TLS_TPREL;
6501 case R_PPC64_REL14_BRTAKEN:
6502 case R_PPC64_REL14_BRNTAKEN:
6505 && (h == &htab->tls_get_addr->elf
6506 || h == &htab->tls_get_addr_fd->elf))
6508 if (!expecting_tls_get_addr
6510 && ((ELF64_R_TYPE (rel[-1].r_info)
6512 || (ELF64_R_TYPE (rel[-1].r_info)
6513 == R_PPC64_TOC16_LO)))
6515 /* Check for toc tls entries. */
6519 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6523 if (toc_tls != NULL)
6524 expecting_tls_get_addr = retval > 1;
6527 if (expecting_tls_get_addr)
6529 struct plt_entry *ent;
6530 for (ent = h->plt.plist; ent; ent = ent->next)
6531 if (ent->addend == 0)
6533 if (ent->plt.refcount > 0)
6534 ent->plt.refcount -= 1;
6539 expecting_tls_get_addr = 0;
6542 case R_PPC64_TPREL64:
6543 expecting_tls_get_addr = 0;
6547 tls_set = TLS_EXPLICIT;
6548 tls_clear = TLS_TPREL;
6554 case R_PPC64_DTPMOD64:
6555 expecting_tls_get_addr = 0;
6556 if (rel + 1 < relend
6558 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6559 && rel[1].r_offset == rel->r_offset + 8)
6563 tls_set = TLS_EXPLICIT | TLS_GD;
6566 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6575 tls_set = TLS_EXPLICIT;
6581 expecting_tls_get_addr = 0;
6585 if ((tls_set & TLS_EXPLICIT) == 0)
6587 struct got_entry *ent;
6589 /* Adjust got entry for this reloc. */
6593 ent = elf_local_got_ents (ibfd)[r_symndx];
6595 for (; ent != NULL; ent = ent->next)
6596 if (ent->addend == rel->r_addend
6597 && ent->owner == ibfd
6598 && ent->tls_type == tls_type)
6605 /* We managed to get rid of a got entry. */
6606 if (ent->got.refcount > 0)
6607 ent->got.refcount -= 1;
6612 struct ppc_link_hash_entry * eh;
6613 struct ppc_dyn_relocs **pp;
6614 struct ppc_dyn_relocs *p;
6616 /* Adjust dynamic relocs. */
6617 eh = (struct ppc_link_hash_entry *) h;
6618 for (pp = &eh->dyn_relocs;
6623 /* If we got rid of a DTPMOD/DTPREL reloc
6624 pair then we'll lose one or two dyn
6626 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6635 *tls_mask |= tls_set;
6636 *tls_mask &= ~tls_clear;
6639 if (elf_section_data (sec)->relocs != relstart)
6644 && (elf_tdata (ibfd)->symtab_hdr.contents
6645 != (unsigned char *) locsyms))
6647 if (!info->keep_memory)
6650 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6656 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6657 the values of any global symbols in a toc section that has been
6658 edited. Globals in toc sections should be a rarity, so this function
6659 sets a flag if any are found in toc sections other than the one just
6660 edited, so that futher hash table traversals can be avoided. */
6662 struct adjust_toc_info
6665 unsigned long *skip;
6666 bfd_boolean global_toc_syms;
6670 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6672 struct ppc_link_hash_entry *eh;
6673 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6675 if (h->root.type == bfd_link_hash_indirect)
6678 if (h->root.type == bfd_link_hash_warning)
6679 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6681 if (h->root.type != bfd_link_hash_defined
6682 && h->root.type != bfd_link_hash_defweak)
6685 eh = (struct ppc_link_hash_entry *) h;
6686 if (eh->adjust_done)
6689 if (eh->elf.root.u.def.section == toc_inf->toc)
6691 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6692 if (skip != (unsigned long) -1)
6693 eh->elf.root.u.def.value -= skip;
6696 (*_bfd_error_handler)
6697 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6698 eh->elf.root.u.def.section = &bfd_abs_section;
6699 eh->elf.root.u.def.value = 0;
6701 eh->adjust_done = 1;
6703 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6704 toc_inf->global_toc_syms = TRUE;
6709 /* Examine all relocs referencing .toc sections in order to remove
6710 unused .toc entries. */
6713 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6716 struct adjust_toc_info toc_inf;
6718 toc_inf.global_toc_syms = TRUE;
6719 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6721 asection *toc, *sec;
6722 Elf_Internal_Shdr *symtab_hdr;
6723 Elf_Internal_Sym *local_syms;
6724 struct elf_link_hash_entry **sym_hashes;
6725 Elf_Internal_Rela *relstart, *rel, *wrel;
6726 unsigned long *skip, *drop;
6727 unsigned char *used;
6728 unsigned char *keep, last, some_unused;
6730 toc = bfd_get_section_by_name (ibfd, ".toc");
6732 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6733 || elf_discarded_section (toc))
6737 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6738 sym_hashes = elf_sym_hashes (ibfd);
6740 /* Look at sections dropped from the final link. */
6743 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6745 if (sec->reloc_count == 0
6746 || !elf_discarded_section (sec)
6747 || get_opd_info (sec)
6748 || (sec->flags & SEC_ALLOC) == 0
6749 || (sec->flags & SEC_DEBUGGING) != 0)
6752 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6753 if (relstart == NULL)
6756 /* Run through the relocs to see which toc entries might be
6758 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6760 enum elf_ppc64_reloc_type r_type;
6761 unsigned long r_symndx;
6763 struct elf_link_hash_entry *h;
6764 Elf_Internal_Sym *sym;
6767 r_type = ELF64_R_TYPE (rel->r_info);
6774 case R_PPC64_TOC16_LO:
6775 case R_PPC64_TOC16_HI:
6776 case R_PPC64_TOC16_HA:
6777 case R_PPC64_TOC16_DS:
6778 case R_PPC64_TOC16_LO_DS:
6782 r_symndx = ELF64_R_SYM (rel->r_info);
6783 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6791 val = h->root.u.def.value;
6793 val = sym->st_value;
6794 val += rel->r_addend;
6796 if (val >= toc->size)
6799 /* Anything in the toc ought to be aligned to 8 bytes.
6800 If not, don't mark as unused. */
6806 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
6814 if (elf_section_data (sec)->relocs != relstart)
6821 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
6825 if (local_syms != NULL
6826 && symtab_hdr->contents != (unsigned char *) local_syms)
6830 && elf_section_data (sec)->relocs != relstart)
6837 /* Now check all kept sections that might reference the toc. */
6838 for (sec = ibfd->sections;
6840 /* Check the toc itself last. */
6841 sec = (sec == toc ? NULL
6842 : sec->next == toc && sec->next->next ? sec->next->next
6843 : sec->next == NULL ? toc
6848 if (sec->reloc_count == 0
6849 || elf_discarded_section (sec)
6850 || get_opd_info (sec)
6851 || (sec->flags & SEC_ALLOC) == 0
6852 || (sec->flags & SEC_DEBUGGING) != 0)
6855 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
6856 if (relstart == NULL)
6859 /* Mark toc entries referenced as used. */
6862 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6864 enum elf_ppc64_reloc_type r_type;
6865 unsigned long r_symndx;
6867 struct elf_link_hash_entry *h;
6868 Elf_Internal_Sym *sym;
6871 r_type = ELF64_R_TYPE (rel->r_info);
6875 case R_PPC64_TOC16_LO:
6876 case R_PPC64_TOC16_HI:
6877 case R_PPC64_TOC16_HA:
6878 case R_PPC64_TOC16_DS:
6879 case R_PPC64_TOC16_LO_DS:
6880 /* In case we're taking addresses of toc entries. */
6881 case R_PPC64_ADDR64:
6888 r_symndx = ELF64_R_SYM (rel->r_info);
6889 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6900 val = h->root.u.def.value;
6902 val = sym->st_value;
6903 val += rel->r_addend;
6905 if (val >= toc->size)
6908 /* For the toc section, we only mark as used if
6909 this entry itself isn't unused. */
6912 && (used[rel->r_offset >> 3]
6913 || !skip[rel->r_offset >> 3]))
6914 /* Do all the relocs again, to catch reference
6923 /* Merge the used and skip arrays. Assume that TOC
6924 doublewords not appearing as either used or unused belong
6925 to to an entry more than one doubleword in size. */
6926 for (drop = skip, keep = used, last = 0, some_unused = 0;
6927 drop < skip + (toc->size + 7) / 8;
6948 bfd_byte *contents, *src;
6951 /* Shuffle the toc contents, and at the same time convert the
6952 skip array from booleans into offsets. */
6953 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
6956 elf_section_data (toc)->this_hdr.contents = contents;
6958 for (src = contents, off = 0, drop = skip;
6959 src < contents + toc->size;
6964 *drop = (unsigned long) -1;
6970 memcpy (src - off, src, 8);
6973 toc->rawsize = toc->size;
6974 toc->size = src - contents - off;
6976 /* Read toc relocs. */
6977 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, TRUE);
6978 if (relstart == NULL)
6981 /* Remove unused toc relocs, and adjust those we keep. */
6983 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
6984 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
6986 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
6987 wrel->r_info = rel->r_info;
6988 wrel->r_addend = rel->r_addend;
6991 toc->reloc_count = wrel - relstart;
6992 elf_section_data (toc)->rel_hdr.sh_size
6993 = toc->reloc_count * elf_section_data (toc)->rel_hdr.sh_entsize;
6994 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
6996 /* Adjust addends for relocs against the toc section sym. */
6997 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6999 if (sec->reloc_count == 0
7000 || elf_discarded_section (sec))
7003 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7005 if (relstart == NULL)
7008 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7010 enum elf_ppc64_reloc_type r_type;
7011 unsigned long r_symndx;
7013 struct elf_link_hash_entry *h;
7014 Elf_Internal_Sym *sym;
7016 r_type = ELF64_R_TYPE (rel->r_info);
7023 case R_PPC64_TOC16_LO:
7024 case R_PPC64_TOC16_HI:
7025 case R_PPC64_TOC16_HA:
7026 case R_PPC64_TOC16_DS:
7027 case R_PPC64_TOC16_LO_DS:
7028 case R_PPC64_ADDR64:
7032 r_symndx = ELF64_R_SYM (rel->r_info);
7033 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7037 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7040 rel->r_addend -= skip[rel->r_addend >> 3];
7044 /* We shouldn't have local or global symbols defined in the TOC,
7045 but handle them anyway. */
7046 if (local_syms != NULL)
7048 Elf_Internal_Sym *sym;
7050 for (sym = local_syms;
7051 sym < local_syms + symtab_hdr->sh_info;
7053 if (sym->st_shndx != SHN_UNDEF
7054 && (sym->st_shndx < SHN_LORESERVE
7055 || sym->st_shndx > SHN_HIRESERVE)
7056 && sym->st_value != 0
7057 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7059 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7060 sym->st_value -= skip[sym->st_value >> 3];
7063 (*_bfd_error_handler)
7064 (_("%s defined in removed toc entry"),
7065 bfd_elf_sym_name (ibfd, symtab_hdr, sym));
7067 sym->st_shndx = SHN_ABS;
7069 symtab_hdr->contents = (unsigned char *) local_syms;
7073 /* Finally, adjust any global syms defined in the toc. */
7074 if (toc_inf.global_toc_syms)
7077 toc_inf.skip = skip;
7078 toc_inf.global_toc_syms = FALSE;
7079 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7084 if (local_syms != NULL
7085 && symtab_hdr->contents != (unsigned char *) local_syms)
7087 if (!info->keep_memory)
7090 symtab_hdr->contents = (unsigned char *) local_syms;
7098 /* Allocate space in .plt, .got and associated reloc sections for
7102 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7104 struct bfd_link_info *info;
7105 struct ppc_link_hash_table *htab;
7107 struct ppc_link_hash_entry *eh;
7108 struct ppc_dyn_relocs *p;
7109 struct got_entry *gent;
7111 if (h->root.type == bfd_link_hash_indirect)
7114 if (h->root.type == bfd_link_hash_warning)
7115 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7117 info = (struct bfd_link_info *) inf;
7118 htab = ppc_hash_table (info);
7120 if (htab->elf.dynamic_sections_created
7122 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
7124 struct plt_entry *pent;
7125 bfd_boolean doneone = FALSE;
7126 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7127 if (pent->plt.refcount > 0)
7129 /* If this is the first .plt entry, make room for the special
7133 s->size += PLT_INITIAL_ENTRY_SIZE;
7135 pent->plt.offset = s->size;
7137 /* Make room for this entry. */
7138 s->size += PLT_ENTRY_SIZE;
7140 /* Make room for the .glink code. */
7143 s->size += GLINK_CALL_STUB_SIZE;
7144 /* We need bigger stubs past index 32767. */
7145 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7149 /* We also need to make an entry in the .rela.plt section. */
7151 s->size += sizeof (Elf64_External_Rela);
7155 pent->plt.offset = (bfd_vma) -1;
7158 h->plt.plist = NULL;
7164 h->plt.plist = NULL;
7168 eh = (struct ppc_link_hash_entry *) h;
7169 /* Run through the TLS GD got entries first if we're changing them
7171 if ((eh->tls_mask & TLS_TPRELGD) != 0)
7172 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7173 if (gent->got.refcount > 0
7174 && (gent->tls_type & TLS_GD) != 0)
7176 /* This was a GD entry that has been converted to TPREL. If
7177 there happens to be a TPREL entry we can use that one. */
7178 struct got_entry *ent;
7179 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7180 if (ent->got.refcount > 0
7181 && (ent->tls_type & TLS_TPREL) != 0
7182 && ent->addend == gent->addend
7183 && ent->owner == gent->owner)
7185 gent->got.refcount = 0;
7189 /* If not, then we'll be using our own TPREL entry. */
7190 if (gent->got.refcount != 0)
7191 gent->tls_type = TLS_TLS | TLS_TPREL;
7194 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7195 if (gent->got.refcount > 0)
7199 /* Make sure this symbol is output as a dynamic symbol.
7200 Undefined weak syms won't yet be marked as dynamic,
7201 nor will all TLS symbols. */
7202 if (h->dynindx == -1
7203 && !h->forced_local)
7205 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7209 if ((gent->tls_type & TLS_LD) != 0
7212 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
7216 s = ppc64_elf_tdata (gent->owner)->got;
7217 gent->got.offset = s->size;
7219 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
7220 dyn = htab->elf.dynamic_sections_created;
7222 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7223 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7224 || h->root.type != bfd_link_hash_undefweak))
7225 ppc64_elf_tdata (gent->owner)->relgot->size
7226 += (gent->tls_type & eh->tls_mask & TLS_GD
7227 ? 2 * sizeof (Elf64_External_Rela)
7228 : sizeof (Elf64_External_Rela));
7231 gent->got.offset = (bfd_vma) -1;
7233 if (eh->dyn_relocs == NULL)
7236 /* In the shared -Bsymbolic case, discard space allocated for
7237 dynamic pc-relative relocs against symbols which turn out to be
7238 defined in regular objects. For the normal shared case, discard
7239 space for relocs that have become local due to symbol visibility
7244 /* Relocs that use pc_count are those that appear on a call insn,
7245 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7246 generated via assembly. We want calls to protected symbols to
7247 resolve directly to the function rather than going via the plt.
7248 If people want function pointer comparisons to work as expected
7249 then they should avoid writing weird assembly. */
7250 if (SYMBOL_CALLS_LOCAL (info, h))
7252 struct ppc_dyn_relocs **pp;
7254 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
7256 p->count -= p->pc_count;
7265 /* Also discard relocs on undefined weak syms with non-default
7267 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7268 && h->root.type == bfd_link_hash_undefweak)
7269 eh->dyn_relocs = NULL;
7271 else if (ELIMINATE_COPY_RELOCS)
7273 /* For the non-shared case, discard space for relocs against
7274 symbols which turn out to need copy relocs or are not
7281 /* Make sure this symbol is output as a dynamic symbol.
7282 Undefined weak syms won't yet be marked as dynamic. */
7283 if (h->dynindx == -1
7284 && !h->forced_local)
7286 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7290 /* If that succeeded, we know we'll be keeping all the
7292 if (h->dynindx != -1)
7296 eh->dyn_relocs = NULL;
7301 /* Finally, allocate space. */
7302 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7304 asection *sreloc = elf_section_data (p->sec)->sreloc;
7305 sreloc->size += p->count * sizeof (Elf64_External_Rela);
7311 /* Find any dynamic relocs that apply to read-only sections. */
7314 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7316 struct ppc_link_hash_entry *eh;
7317 struct ppc_dyn_relocs *p;
7319 if (h->root.type == bfd_link_hash_warning)
7320 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7322 eh = (struct ppc_link_hash_entry *) h;
7323 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7325 asection *s = p->sec->output_section;
7327 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7329 struct bfd_link_info *info = inf;
7331 info->flags |= DF_TEXTREL;
7333 /* Not an error, just cut short the traversal. */
7340 /* Set the sizes of the dynamic sections. */
7343 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7344 struct bfd_link_info *info)
7346 struct ppc_link_hash_table *htab;
7352 htab = ppc_hash_table (info);
7353 dynobj = htab->elf.dynobj;
7357 if (htab->elf.dynamic_sections_created)
7359 /* Set the contents of the .interp section to the interpreter. */
7360 if (info->executable)
7362 s = bfd_get_section_by_name (dynobj, ".interp");
7365 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
7366 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7370 /* Set up .got offsets for local syms, and space for local dynamic
7372 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7374 struct got_entry **lgot_ents;
7375 struct got_entry **end_lgot_ents;
7377 bfd_size_type locsymcount;
7378 Elf_Internal_Shdr *symtab_hdr;
7381 if (!is_ppc64_elf_target (ibfd->xvec))
7384 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7386 s = ppc64_elf_tdata (ibfd)->got;
7387 ppc64_tlsld_got (ibfd)->offset = s->size;
7391 srel = ppc64_elf_tdata (ibfd)->relgot;
7392 srel->size += sizeof (Elf64_External_Rela);
7396 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7398 for (s = ibfd->sections; s != NULL; s = s->next)
7400 struct ppc_dyn_relocs *p;
7402 for (p = *((struct ppc_dyn_relocs **)
7403 &elf_section_data (s)->local_dynrel);
7407 if (!bfd_is_abs_section (p->sec)
7408 && bfd_is_abs_section (p->sec->output_section))
7410 /* Input section has been discarded, either because
7411 it is a copy of a linkonce section or due to
7412 linker script /DISCARD/, so we'll be discarding
7415 else if (p->count != 0)
7417 srel = elf_section_data (p->sec)->sreloc;
7418 srel->size += p->count * sizeof (Elf64_External_Rela);
7419 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7420 info->flags |= DF_TEXTREL;
7425 lgot_ents = elf_local_got_ents (ibfd);
7429 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7430 locsymcount = symtab_hdr->sh_info;
7431 end_lgot_ents = lgot_ents + locsymcount;
7432 lgot_masks = (char *) end_lgot_ents;
7433 s = ppc64_elf_tdata (ibfd)->got;
7434 srel = ppc64_elf_tdata (ibfd)->relgot;
7435 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
7437 struct got_entry *ent;
7439 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7440 if (ent->got.refcount > 0)
7442 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
7444 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
7446 ppc64_tlsld_got (ibfd)->offset = s->size;
7449 srel->size += sizeof (Elf64_External_Rela);
7451 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
7455 ent->got.offset = s->size;
7456 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
7460 srel->size += 2 * sizeof (Elf64_External_Rela);
7466 srel->size += sizeof (Elf64_External_Rela);
7471 ent->got.offset = (bfd_vma) -1;
7475 /* Allocate global sym .plt and .got entries, and space for global
7476 sym dynamic relocs. */
7477 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
7479 /* We now have determined the sizes of the various dynamic sections.
7480 Allocate memory for them. */
7482 for (s = dynobj->sections; s != NULL; s = s->next)
7484 if ((s->flags & SEC_LINKER_CREATED) == 0)
7487 if (s == htab->brlt || s == htab->relbrlt)
7488 /* These haven't been allocated yet; don't strip. */
7490 else if (s == htab->got
7492 || s == htab->glink)
7494 /* Strip this section if we don't need it; see the
7497 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
7501 /* If we don't need this section, strip it from the
7502 output file. This is mostly to handle .rela.bss and
7503 .rela.plt. We must create both sections in
7504 create_dynamic_sections, because they must be created
7505 before the linker maps input sections to output
7506 sections. The linker does that before
7507 adjust_dynamic_symbol is called, and it is that
7508 function which decides whether anything needs to go
7509 into these sections. */
7513 if (s != htab->relplt)
7516 /* We use the reloc_count field as a counter if we need
7517 to copy relocs into the output file. */
7523 /* It's not one of our sections, so don't allocate space. */
7529 _bfd_strip_section_from_output (info, s);
7533 /* .plt is in the bss section. We don't initialise it. */
7537 /* Allocate memory for the section contents. We use bfd_zalloc
7538 here in case unused entries are not reclaimed before the
7539 section's contents are written out. This should not happen,
7540 but this way if it does we get a R_PPC64_NONE reloc in .rela
7541 sections instead of garbage.
7542 We also rely on the section contents being zero when writing
7544 s->contents = bfd_zalloc (dynobj, s->size);
7545 if (s->contents == NULL)
7549 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7551 if (!is_ppc64_elf_target (ibfd->xvec))
7554 s = ppc64_elf_tdata (ibfd)->got;
7555 if (s != NULL && s != htab->got)
7558 _bfd_strip_section_from_output (info, s);
7561 s->contents = bfd_zalloc (ibfd, s->size);
7562 if (s->contents == NULL)
7566 s = ppc64_elf_tdata (ibfd)->relgot;
7570 _bfd_strip_section_from_output (info, s);
7573 s->contents = bfd_zalloc (ibfd, s->size);
7574 if (s->contents == NULL)
7582 if (htab->elf.dynamic_sections_created)
7584 /* Add some entries to the .dynamic section. We fill in the
7585 values later, in ppc64_elf_finish_dynamic_sections, but we
7586 must add the entries now so that we get the correct size for
7587 the .dynamic section. The DT_DEBUG entry is filled in by the
7588 dynamic linker and used by the debugger. */
7589 #define add_dynamic_entry(TAG, VAL) \
7590 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7592 if (info->executable)
7594 if (!add_dynamic_entry (DT_DEBUG, 0))
7598 if (htab->plt != NULL && htab->plt->size != 0)
7600 if (!add_dynamic_entry (DT_PLTGOT, 0)
7601 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7602 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
7603 || !add_dynamic_entry (DT_JMPREL, 0)
7604 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
7610 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7611 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
7617 if (!add_dynamic_entry (DT_RELA, 0)
7618 || !add_dynamic_entry (DT_RELASZ, 0)
7619 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
7622 /* If any dynamic relocs apply to a read-only section,
7623 then we need a DT_TEXTREL entry. */
7624 if ((info->flags & DF_TEXTREL) == 0)
7625 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
7627 if ((info->flags & DF_TEXTREL) != 0)
7629 if (!add_dynamic_entry (DT_TEXTREL, 0))
7634 #undef add_dynamic_entry
7639 /* Determine the type of stub needed, if any, for a call. */
7641 static inline enum ppc_stub_type
7642 ppc_type_of_stub (asection *input_sec,
7643 const Elf_Internal_Rela *rel,
7644 struct ppc_link_hash_entry **hash,
7645 bfd_vma destination)
7647 struct ppc_link_hash_entry *h = *hash;
7649 bfd_vma branch_offset;
7650 bfd_vma max_branch_offset;
7651 enum elf_ppc64_reloc_type r_type;
7656 && h->oh->is_func_descriptor)
7659 if (h->elf.dynindx != -1)
7661 struct plt_entry *ent;
7663 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
7664 if (ent->addend == rel->r_addend
7665 && ent->plt.offset != (bfd_vma) -1)
7668 return ppc_stub_plt_call;
7672 if (!(h->elf.root.type == bfd_link_hash_defined
7673 || h->elf.root.type == bfd_link_hash_defweak)
7674 || h->elf.root.u.def.section->output_section == NULL)
7675 return ppc_stub_none;
7678 /* Determine where the call point is. */
7679 location = (input_sec->output_offset
7680 + input_sec->output_section->vma
7683 branch_offset = destination - location;
7684 r_type = ELF64_R_TYPE (rel->r_info);
7686 /* Determine if a long branch stub is needed. */
7687 max_branch_offset = 1 << 25;
7688 if (r_type != R_PPC64_REL24)
7689 max_branch_offset = 1 << 15;
7691 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7692 /* We need a stub. Figure out whether a long_branch or plt_branch
7694 return ppc_stub_long_branch;
7696 return ppc_stub_none;
7699 /* Build a .plt call stub. */
7701 static inline bfd_byte *
7702 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
7704 #define PPC_LO(v) ((v) & 0xffff)
7705 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7706 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7708 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
7709 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
7710 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7711 if (PPC_HA (offset + 8) != PPC_HA (offset))
7712 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7714 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7715 if (PPC_HA (offset + 8) != PPC_HA (offset))
7716 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7718 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7719 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7720 bfd_put_32 (obfd, BCTR, p), p += 4;
7725 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7727 struct ppc_stub_hash_entry *stub_entry;
7728 struct ppc_branch_hash_entry *br_entry;
7729 struct bfd_link_info *info;
7730 struct ppc_link_hash_table *htab;
7734 struct plt_entry *ent;
7738 /* Massage our args to the form they really have. */
7739 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7742 htab = ppc_hash_table (info);
7744 /* Make a note of the offset within the stubs for this entry. */
7745 stub_entry->stub_offset = stub_entry->stub_sec->size;
7746 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
7748 htab->stub_count[stub_entry->stub_type - 1] += 1;
7749 switch (stub_entry->stub_type)
7751 case ppc_stub_long_branch:
7752 case ppc_stub_long_branch_r2off:
7753 /* Branches are relative. This is where we are going to. */
7754 off = dest = (stub_entry->target_value
7755 + stub_entry->target_section->output_offset
7756 + stub_entry->target_section->output_section->vma);
7758 /* And this is where we are coming from. */
7759 off -= (stub_entry->stub_offset
7760 + stub_entry->stub_sec->output_offset
7761 + stub_entry->stub_sec->output_section->vma);
7763 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7769 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7770 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7771 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7773 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7775 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7780 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
7782 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
7784 if (info->emitrelocations)
7786 Elf_Internal_Rela *relocs, *r;
7787 struct bfd_elf_section_data *elfsec_data;
7789 elfsec_data = elf_section_data (stub_entry->stub_sec);
7790 relocs = elfsec_data->relocs;
7793 bfd_size_type relsize;
7794 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
7795 relocs = bfd_alloc (htab->stub_bfd, relsize);
7798 elfsec_data->relocs = relocs;
7799 elfsec_data->rel_hdr.sh_size = relsize;
7800 elfsec_data->rel_hdr.sh_entsize = 24;
7801 stub_entry->stub_sec->reloc_count = 0;
7803 r = relocs + stub_entry->stub_sec->reloc_count;
7804 stub_entry->stub_sec->reloc_count += 1;
7805 r->r_offset = loc - stub_entry->stub_sec->contents;
7806 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
7808 if (stub_entry->h != NULL)
7810 struct elf_link_hash_entry **hashes;
7811 unsigned long symndx;
7812 struct ppc_link_hash_entry *h;
7814 hashes = elf_sym_hashes (htab->stub_bfd);
7817 bfd_size_type hsize;
7819 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
7820 hashes = bfd_zalloc (htab->stub_bfd, hsize);
7823 elf_sym_hashes (htab->stub_bfd) = hashes;
7824 htab->stub_globals = 1;
7826 symndx = htab->stub_globals++;
7828 hashes[symndx] = &h->elf;
7829 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
7830 if (h->oh != NULL && h->oh->is_func)
7832 if (h->elf.root.u.def.section != stub_entry->target_section)
7833 /* H is an opd symbol. The addend must be zero. */
7837 off = (h->elf.root.u.def.value
7838 + h->elf.root.u.def.section->output_offset
7839 + h->elf.root.u.def.section->output_section->vma);
7846 case ppc_stub_plt_branch:
7847 case ppc_stub_plt_branch_r2off:
7848 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7849 stub_entry->root.string + 9,
7851 if (br_entry == NULL)
7853 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
7854 stub_entry->root.string + 9);
7855 htab->stub_error = TRUE;
7859 off = (stub_entry->target_value
7860 + stub_entry->target_section->output_offset
7861 + stub_entry->target_section->output_section->vma);
7863 bfd_put_64 (htab->brlt->owner, off,
7864 htab->brlt->contents + br_entry->offset);
7866 if (htab->relbrlt != NULL)
7868 /* Create a reloc for the branch lookup table entry. */
7869 Elf_Internal_Rela rela;
7872 rela.r_offset = (br_entry->offset
7873 + htab->brlt->output_offset
7874 + htab->brlt->output_section->vma);
7875 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7876 rela.r_addend = off;
7878 rl = htab->relbrlt->contents;
7879 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
7880 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
7883 off = (br_entry->offset
7884 + htab->brlt->output_offset
7885 + htab->brlt->output_section->vma
7886 - elf_gp (htab->brlt->output_section->owner)
7887 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7889 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
7891 (*_bfd_error_handler)
7892 (_("linkage table error against `%s'"),
7893 stub_entry->root.string);
7894 bfd_set_error (bfd_error_bad_value);
7895 htab->stub_error = TRUE;
7900 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
7902 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7904 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7911 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7912 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7913 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7915 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7917 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7919 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7921 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7925 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
7927 bfd_put_32 (htab->stub_bfd, BCTR, loc);
7930 case ppc_stub_plt_call:
7931 /* Do the best we can for shared libraries built without
7932 exporting ".foo" for each "foo". This can happen when symbol
7933 versioning scripts strip all bar a subset of symbols. */
7934 if (stub_entry->h->oh != NULL
7935 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
7936 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
7938 /* Point the symbol at the stub. There may be multiple stubs,
7939 we don't really care; The main thing is to make this sym
7940 defined somewhere. Maybe defining the symbol in the stub
7941 section is a silly idea. If we didn't do this, htab->top_id
7943 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
7944 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
7945 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
7948 /* Now build the stub. */
7950 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
7951 if (ent->addend == stub_entry->addend)
7953 off = ent->plt.offset;
7956 if (off >= (bfd_vma) -2)
7959 off &= ~ (bfd_vma) 1;
7960 off += (htab->plt->output_offset
7961 + htab->plt->output_section->vma
7962 - elf_gp (htab->plt->output_section->owner)
7963 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7965 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
7967 (*_bfd_error_handler)
7968 (_("linkage table error against `%s'"),
7969 stub_entry->h->elf.root.root.string);
7970 bfd_set_error (bfd_error_bad_value);
7971 htab->stub_error = TRUE;
7975 p = build_plt_stub (htab->stub_bfd, loc, off);
7984 stub_entry->stub_sec->size += size;
7986 if (htab->emit_stub_syms)
7988 struct elf_link_hash_entry *h;
7991 const char *const stub_str[] = { "long_branch",
7992 "long_branch_r2off",
7997 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
7998 len2 = strlen (stub_entry->root.string);
7999 name = bfd_malloc (len1 + len2 + 2);
8002 memcpy (name, stub_entry->root.string, 9);
8003 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8004 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8005 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
8008 if (h->root.type == bfd_link_hash_new)
8010 h->root.type = bfd_link_hash_defined;
8011 h->root.u.def.section = stub_entry->stub_sec;
8012 h->root.u.def.value = stub_entry->stub_offset;
8015 h->ref_regular_nonweak = 1;
8016 h->forced_local = 1;
8024 /* As above, but don't actually build the stub. Just bump offset so
8025 we know stub section sizes, and select plt_branch stubs where
8026 long_branch stubs won't do. */
8029 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8031 struct ppc_stub_hash_entry *stub_entry;
8032 struct bfd_link_info *info;
8033 struct ppc_link_hash_table *htab;
8037 /* Massage our args to the form they really have. */
8038 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8041 htab = ppc_hash_table (info);
8043 if (stub_entry->stub_type == ppc_stub_plt_call)
8045 struct plt_entry *ent;
8047 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8048 if (ent->addend == stub_entry->addend)
8050 off = ent->plt.offset & ~(bfd_vma) 1;
8053 if (off >= (bfd_vma) -2)
8055 off += (htab->plt->output_offset
8056 + htab->plt->output_section->vma
8057 - elf_gp (htab->plt->output_section->owner)
8058 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8060 size = PLT_CALL_STUB_SIZE;
8061 if (PPC_HA (off + 16) != PPC_HA (off))
8066 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8068 off = (stub_entry->target_value
8069 + stub_entry->target_section->output_offset
8070 + stub_entry->target_section->output_section->vma);
8071 off -= (stub_entry->stub_sec->size
8072 + stub_entry->stub_sec->output_offset
8073 + stub_entry->stub_sec->output_section->vma);
8075 /* Reset the stub type from the plt variant in case we now
8076 can reach with a shorter stub. */
8077 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8078 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8081 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8087 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8088 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8090 struct ppc_branch_hash_entry *br_entry;
8092 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8093 stub_entry->root.string + 9,
8095 if (br_entry == NULL)
8097 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8098 stub_entry->root.string + 9);
8099 htab->stub_error = TRUE;
8103 if (br_entry->iter != htab->stub_iteration)
8105 br_entry->iter = htab->stub_iteration;
8106 br_entry->offset = htab->brlt->size;
8107 htab->brlt->size += 8;
8109 if (htab->relbrlt != NULL)
8110 htab->relbrlt->size += sizeof (Elf64_External_Rela);
8113 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
8115 if (stub_entry->stub_type != ppc_stub_plt_branch)
8119 if (info->emitrelocations
8120 && (stub_entry->stub_type == ppc_stub_long_branch
8121 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8122 stub_entry->stub_sec->reloc_count += 1;
8125 stub_entry->stub_sec->size += size;
8129 /* Set up various things so that we can make a list of input sections
8130 for each output section included in the link. Returns -1 on error,
8131 0 when no stubs will be needed, and 1 on success. */
8134 ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
8137 int top_id, top_index, id;
8139 asection **input_list;
8141 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8143 if (htab->brlt == NULL)
8146 /* Find the top input section id. */
8147 for (input_bfd = info->input_bfds, top_id = 3;
8149 input_bfd = input_bfd->link_next)
8151 for (section = input_bfd->sections;
8153 section = section->next)
8155 if (top_id < section->id)
8156 top_id = section->id;
8160 htab->top_id = top_id;
8161 amt = sizeof (struct map_stub) * (top_id + 1);
8162 htab->stub_group = bfd_zmalloc (amt);
8163 if (htab->stub_group == NULL)
8166 /* Set toc_off for com, und, abs and ind sections. */
8167 for (id = 0; id < 3; id++)
8168 htab->stub_group[id].toc_off = TOC_BASE_OFF;
8170 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
8172 /* We can't use output_bfd->section_count here to find the top output
8173 section index as some sections may have been removed, and
8174 _bfd_strip_section_from_output doesn't renumber the indices. */
8175 for (section = output_bfd->sections, top_index = 0;
8177 section = section->next)
8179 if (top_index < section->index)
8180 top_index = section->index;
8183 htab->top_index = top_index;
8184 amt = sizeof (asection *) * (top_index + 1);
8185 input_list = bfd_zmalloc (amt);
8186 htab->input_list = input_list;
8187 if (input_list == NULL)
8193 /* The linker repeatedly calls this function for each TOC input section
8194 and linker generated GOT section. Group input bfds such that the toc
8195 within a group is less than 64k in size. Will break with cute linker
8196 scripts that play games with dot in the output toc section. */
8199 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
8201 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8202 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8203 bfd_vma off = addr - htab->toc_curr;
8205 if (off + isec->size > 0x10000)
8206 htab->toc_curr = addr;
8208 elf_gp (isec->owner) = (htab->toc_curr
8209 - elf_gp (isec->output_section->owner)
8213 /* Called after the last call to the above function. */
8216 ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
8217 struct bfd_link_info *info)
8219 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8221 /* toc_curr tracks the TOC offset used for code sections below in
8222 ppc64_elf_next_input_section. Start off at 0x8000. */
8223 htab->toc_curr = TOC_BASE_OFF;
8226 /* No toc references were found in ISEC. If the code in ISEC makes no
8227 calls, then there's no need to use toc adjusting stubs when branching
8228 into ISEC. Actually, indirect calls from ISEC are OK as they will
8232 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
8239 /* We know none of our code bearing sections will need toc stubs. */
8240 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8243 if (isec->size == 0)
8246 /* Hack for linux kernel. .fixup contains branches, but only back to
8247 the function that hit an exception. */
8248 branch_ok = strcmp (isec->name, ".fixup") == 0;
8250 contents = elf_section_data (isec)->this_hdr.contents;
8251 if (contents == NULL)
8253 if (!bfd_malloc_and_get_section (isec->owner, isec, &contents))
8255 if (contents != NULL)
8259 if (info->keep_memory)
8260 elf_section_data (isec)->this_hdr.contents = contents;
8263 /* Code scan, because we don't necessarily have relocs on calls to
8264 static functions. */
8266 for (i = 0; i < isec->size; i += 4)
8268 unsigned long insn = bfd_get_32 (isec->owner, contents + i);
8269 /* Is this a branch? */
8270 if ((insn & (0x3f << 26)) == (18 << 26)
8271 /* If branch and link, it's a function call. */
8273 /* Sibling calls use a plain branch. I don't know a way
8274 of deciding whether a branch is really a sibling call. */
8282 if (elf_section_data (isec)->this_hdr.contents != contents)
8287 /* The linker repeatedly calls this function for each input section,
8288 in the order that input sections are linked into output sections.
8289 Build lists of input sections to determine groupings between which
8290 we may insert linker stubs. */
8293 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
8295 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8298 if ((isec->output_section->flags & SEC_CODE) != 0
8299 && isec->output_section->index <= htab->top_index)
8301 asection **list = htab->input_list + isec->output_section->index;
8302 /* Steal the link_sec pointer for our list. */
8303 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8304 /* This happens to make the list in reverse order,
8305 which is what we want. */
8306 PREV_SEC (isec) = *list;
8310 /* If a code section has a function that uses the TOC then we need
8311 to use the right TOC (obviously). Also, make sure that .opd gets
8312 the correct TOC value for R_PPC64_TOC relocs that don't have or
8313 can't find their function symbol (shouldn't ever happen now). */
8314 if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
8316 if (elf_gp (isec->owner) != 0)
8317 htab->toc_curr = elf_gp (isec->owner);
8319 else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
8322 isec->has_gp_reloc = ret;
8324 /* Functions that don't use the TOC can belong in any TOC group.
8325 Use the last TOC base. This happens to make _init and _fini
8327 htab->stub_group[isec->id].toc_off = htab->toc_curr;
8331 /* See whether we can group stub sections together. Grouping stub
8332 sections may result in fewer stubs. More importantly, we need to
8333 put all .init* and .fini* stubs at the beginning of the .init or
8334 .fini output sections respectively, because glibc splits the
8335 _init and _fini functions into multiple parts. Putting a stub in
8336 the middle of a function is not a good idea. */
8339 group_sections (struct ppc_link_hash_table *htab,
8340 bfd_size_type stub_group_size,
8341 bfd_boolean stubs_always_before_branch)
8343 asection **list = htab->input_list + htab->top_index;
8346 asection *tail = *list;
8347 while (tail != NULL)
8351 bfd_size_type total;
8352 bfd_boolean big_sec;
8357 big_sec = total >= stub_group_size;
8358 curr_toc = htab->stub_group[tail->id].toc_off;
8360 while ((prev = PREV_SEC (curr)) != NULL
8361 && ((total += curr->output_offset - prev->output_offset)
8363 && htab->stub_group[prev->id].toc_off == curr_toc)
8366 /* OK, the size from the start of CURR to the end is less
8367 than stub_group_size and thus can be handled by one stub
8368 section. (or the tail section is itself larger than
8369 stub_group_size, in which case we may be toast.) We
8370 should really be keeping track of the total size of stubs
8371 added here, as stubs contribute to the final output
8372 section size. That's a little tricky, and this way will
8373 only break if stubs added make the total size more than
8374 2^25, ie. for the default stub_group_size, if stubs total
8375 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8378 prev = PREV_SEC (tail);
8379 /* Set up this stub group. */
8380 htab->stub_group[tail->id].link_sec = curr;
8382 while (tail != curr && (tail = prev) != NULL);
8384 /* But wait, there's more! Input sections up to stub_group_size
8385 bytes before the stub section can be handled by it too.
8386 Don't do this if we have a really large section after the
8387 stubs, as adding more stubs increases the chance that
8388 branches may not reach into the stub section. */
8389 if (!stubs_always_before_branch && !big_sec)
8393 && ((total += tail->output_offset - prev->output_offset)
8395 && htab->stub_group[prev->id].toc_off == curr_toc)
8398 prev = PREV_SEC (tail);
8399 htab->stub_group[tail->id].link_sec = curr;
8405 while (list-- != htab->input_list);
8406 free (htab->input_list);
8410 /* Determine and set the size of the stub section for a final link.
8412 The basic idea here is to examine all the relocations looking for
8413 PC-relative calls to a target that is unreachable with a "bl"
8417 ppc64_elf_size_stubs (bfd *output_bfd,
8418 struct bfd_link_info *info,
8419 bfd_signed_vma group_size,
8420 asection *(*add_stub_section) (const char *, asection *),
8421 void (*layout_sections_again) (void))
8423 bfd_size_type stub_group_size;
8424 bfd_boolean stubs_always_before_branch;
8425 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8427 /* Stash our params away. */
8428 htab->add_stub_section = add_stub_section;
8429 htab->layout_sections_again = layout_sections_again;
8430 stubs_always_before_branch = group_size < 0;
8432 stub_group_size = -group_size;
8434 stub_group_size = group_size;
8435 if (stub_group_size == 1)
8437 /* Default values. */
8438 if (stubs_always_before_branch)
8440 stub_group_size = 0x1e00000;
8441 if (htab->has_14bit_branch)
8442 stub_group_size = 0x7800;
8446 stub_group_size = 0x1c00000;
8447 if (htab->has_14bit_branch)
8448 stub_group_size = 0x7000;
8452 group_sections (htab, stub_group_size, stubs_always_before_branch);
8457 unsigned int bfd_indx;
8459 bfd_boolean stub_changed;
8461 htab->stub_iteration += 1;
8462 stub_changed = FALSE;
8464 for (input_bfd = info->input_bfds, bfd_indx = 0;
8466 input_bfd = input_bfd->link_next, bfd_indx++)
8468 Elf_Internal_Shdr *symtab_hdr;
8470 Elf_Internal_Sym *local_syms = NULL;
8472 /* We'll need the symbol table in a second. */
8473 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8474 if (symtab_hdr->sh_info == 0)
8477 /* Walk over each section attached to the input bfd. */
8478 for (section = input_bfd->sections;
8480 section = section->next)
8482 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
8484 /* If there aren't any relocs, then there's nothing more
8486 if ((section->flags & SEC_RELOC) == 0
8487 || section->reloc_count == 0)
8490 /* If this section is a link-once section that will be
8491 discarded, then don't create any stubs. */
8492 if (section->output_section == NULL
8493 || section->output_section->owner != output_bfd)
8496 /* Get the relocs. */
8498 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
8500 if (internal_relocs == NULL)
8501 goto error_ret_free_local;
8503 /* Now examine each relocation. */
8504 irela = internal_relocs;
8505 irelaend = irela + section->reloc_count;
8506 for (; irela < irelaend; irela++)
8508 enum elf_ppc64_reloc_type r_type;
8509 unsigned int r_indx;
8510 enum ppc_stub_type stub_type;
8511 struct ppc_stub_hash_entry *stub_entry;
8512 asection *sym_sec, *code_sec;
8514 bfd_vma destination;
8515 bfd_boolean ok_dest;
8516 struct ppc_link_hash_entry *hash;
8517 struct ppc_link_hash_entry *fdh;
8518 struct elf_link_hash_entry *h;
8519 Elf_Internal_Sym *sym;
8521 const asection *id_sec;
8524 r_type = ELF64_R_TYPE (irela->r_info);
8525 r_indx = ELF64_R_SYM (irela->r_info);
8527 if (r_type >= R_PPC64_max)
8529 bfd_set_error (bfd_error_bad_value);
8530 goto error_ret_free_internal;
8533 /* Only look for stubs on branch instructions. */
8534 if (r_type != R_PPC64_REL24
8535 && r_type != R_PPC64_REL14
8536 && r_type != R_PPC64_REL14_BRTAKEN
8537 && r_type != R_PPC64_REL14_BRNTAKEN)
8540 /* Now determine the call target, its name, value,
8542 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8544 goto error_ret_free_internal;
8545 hash = (struct ppc_link_hash_entry *) h;
8551 sym_value = sym->st_value;
8557 /* Recognise an old ABI func code entry sym, and
8558 use the func descriptor sym instead. */
8559 if (hash->elf.root.type == bfd_link_hash_undefweak
8560 && hash->elf.root.root.string[0] == '.'
8561 && (fdh = get_fdh (hash, htab)) != NULL)
8563 if (fdh->elf.root.type == bfd_link_hash_defined
8564 || fdh->elf.root.type == bfd_link_hash_defweak)
8566 sym_sec = fdh->elf.root.u.def.section;
8567 sym_value = fdh->elf.root.u.def.value;
8568 if (sym_sec->output_section != NULL)
8574 else if (hash->elf.root.type == bfd_link_hash_defined
8575 || hash->elf.root.type == bfd_link_hash_defweak)
8577 sym_value = hash->elf.root.u.def.value;
8578 if (sym_sec->output_section != NULL)
8581 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8583 else if (hash->elf.root.type == bfd_link_hash_undefined)
8587 bfd_set_error (bfd_error_bad_value);
8588 goto error_ret_free_internal;
8595 sym_value += irela->r_addend;
8596 destination = (sym_value
8597 + sym_sec->output_offset
8598 + sym_sec->output_section->vma);
8602 opd_adjust = get_opd_info (sym_sec);
8603 if (opd_adjust != NULL)
8609 long adjust = opd_adjust[sym_value / 8];
8612 sym_value += adjust;
8614 dest = opd_entry_value (sym_sec, sym_value,
8615 &code_sec, &sym_value);
8616 if (dest != (bfd_vma) -1)
8621 /* Fixup old ABI sym to point at code
8623 hash->elf.root.type = bfd_link_hash_defweak;
8624 hash->elf.root.u.def.section = code_sec;
8625 hash->elf.root.u.def.value = sym_value;
8630 /* Determine what (if any) linker stub is needed. */
8631 stub_type = ppc_type_of_stub (section, irela, &hash,
8634 if (stub_type != ppc_stub_plt_call)
8636 /* Check whether we need a TOC adjusting stub.
8637 Since the linker pastes together pieces from
8638 different object files when creating the
8639 _init and _fini functions, it may be that a
8640 call to what looks like a local sym is in
8641 fact a call needing a TOC adjustment. */
8642 if (code_sec != NULL
8643 && code_sec->output_section != NULL
8644 && (htab->stub_group[code_sec->id].toc_off
8645 != htab->stub_group[section->id].toc_off)
8646 && code_sec->has_gp_reloc
8647 && section->has_gp_reloc)
8648 stub_type = ppc_stub_long_branch_r2off;
8651 if (stub_type == ppc_stub_none)
8654 /* __tls_get_addr calls might be eliminated. */
8655 if (stub_type != ppc_stub_plt_call
8657 && (hash == htab->tls_get_addr
8658 || hash == htab->tls_get_addr_fd)
8659 && section->has_tls_reloc
8660 && irela != internal_relocs)
8665 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
8666 irela - 1, input_bfd))
8667 goto error_ret_free_internal;
8672 /* Support for grouping stub sections. */
8673 id_sec = htab->stub_group[section->id].link_sec;
8675 /* Get the name of this stub. */
8676 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
8678 goto error_ret_free_internal;
8680 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
8681 stub_name, FALSE, FALSE);
8682 if (stub_entry != NULL)
8684 /* The proper stub has already been created. */
8689 stub_entry = ppc_add_stub (stub_name, section, htab);
8690 if (stub_entry == NULL)
8693 error_ret_free_internal:
8694 if (elf_section_data (section)->relocs == NULL)
8695 free (internal_relocs);
8696 error_ret_free_local:
8697 if (local_syms != NULL
8698 && (symtab_hdr->contents
8699 != (unsigned char *) local_syms))
8704 stub_entry->stub_type = stub_type;
8705 stub_entry->target_value = sym_value;
8706 stub_entry->target_section = code_sec;
8707 stub_entry->h = hash;
8708 stub_entry->addend = irela->r_addend;
8710 if (stub_entry->h != NULL)
8711 htab->stub_globals += 1;
8713 stub_changed = TRUE;
8716 /* We're done with the internal relocs, free them. */
8717 if (elf_section_data (section)->relocs != internal_relocs)
8718 free (internal_relocs);
8721 if (local_syms != NULL
8722 && symtab_hdr->contents != (unsigned char *) local_syms)
8724 if (!info->keep_memory)
8727 symtab_hdr->contents = (unsigned char *) local_syms;
8734 /* OK, we've added some stubs. Find out the new size of the
8736 for (stub_sec = htab->stub_bfd->sections;
8738 stub_sec = stub_sec->next)
8739 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
8742 stub_sec->reloc_count = 0;
8745 htab->brlt->size = 0;
8746 if (htab->relbrlt != NULL)
8747 htab->relbrlt->size = 0;
8749 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
8751 /* Ask the linker to do its stuff. */
8752 (*htab->layout_sections_again) ();
8755 /* It would be nice to strip .branch_lt from the output if the
8756 section is empty, but it's too late. If we strip sections here,
8757 the dynamic symbol table is corrupted since the section symbol
8758 for the stripped section isn't written. */
8763 /* Called after we have determined section placement. If sections
8764 move, we'll be called again. Provide a value for TOCstart. */
8767 ppc64_elf_toc (bfd *obfd)
8772 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8773 order. The TOC starts where the first of these sections starts. */
8774 s = bfd_get_section_by_name (obfd, ".got");
8776 s = bfd_get_section_by_name (obfd, ".toc");
8778 s = bfd_get_section_by_name (obfd, ".tocbss");
8780 s = bfd_get_section_by_name (obfd, ".plt");
8783 /* This may happen for
8784 o references to TOC base (SYM@toc / TOC[tc0]) without a
8787 o --gc-sections and empty TOC sections
8789 FIXME: Warn user? */
8791 /* Look for a likely section. We probably won't even be
8793 for (s = obfd->sections; s != NULL; s = s->next)
8794 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
8795 == (SEC_ALLOC | SEC_SMALL_DATA))
8798 for (s = obfd->sections; s != NULL; s = s->next)
8799 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
8800 == (SEC_ALLOC | SEC_SMALL_DATA))
8803 for (s = obfd->sections; s != NULL; s = s->next)
8804 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
8807 for (s = obfd->sections; s != NULL; s = s->next)
8808 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
8814 TOCstart = s->output_section->vma + s->output_offset;
8819 /* Build all the stubs associated with the current output file.
8820 The stubs are kept in a hash table attached to the main linker
8821 hash table. This function is called via gldelf64ppc_finish. */
8824 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
8825 struct bfd_link_info *info,
8828 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8831 int stub_sec_count = 0;
8833 htab->emit_stub_syms = emit_stub_syms;
8835 /* Allocate memory to hold the linker stubs. */
8836 for (stub_sec = htab->stub_bfd->sections;
8838 stub_sec = stub_sec->next)
8839 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
8840 && stub_sec->size != 0)
8842 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
8843 if (stub_sec->contents == NULL)
8845 /* We want to check that built size is the same as calculated
8846 size. rawsize is a convenient location to use. */
8847 stub_sec->rawsize = stub_sec->size;
8851 if (htab->plt != NULL)
8856 /* Build the .glink plt call stub. */
8857 plt0 = (htab->plt->output_section->vma
8858 + htab->plt->output_offset
8859 - (htab->glink->output_section->vma
8860 + htab->glink->output_offset
8861 + GLINK_CALL_STUB_SIZE));
8862 if (plt0 + 0x80008000 > 0xffffffff)
8864 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
8865 bfd_set_error (bfd_error_bad_value);
8869 if (htab->emit_stub_syms)
8871 struct elf_link_hash_entry *h;
8872 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
8875 if (h->root.type == bfd_link_hash_new)
8877 h->root.type = bfd_link_hash_defined;
8878 h->root.u.def.section = htab->glink;
8879 h->root.u.def.value = 0;
8882 h->ref_regular_nonweak = 1;
8883 h->forced_local = 1;
8887 p = htab->glink->contents;
8888 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
8890 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
8892 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
8894 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
8896 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
8898 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
8900 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
8902 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
8904 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
8906 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
8908 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
8910 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
8912 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
8914 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
8916 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
8918 bfd_put_32 (htab->glink->owner, BCTR, p);
8921 /* Build the .glink lazy link call stubs. */
8923 while (p < htab->glink->contents + htab->glink->size)
8927 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
8932 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
8934 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
8937 bfd_put_32 (htab->glink->owner,
8938 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
8942 htab->glink->rawsize = p - htab->glink->contents;
8945 if (htab->brlt->size != 0)
8947 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
8949 if (htab->brlt->contents == NULL)
8952 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
8954 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
8955 htab->relbrlt->size);
8956 if (htab->relbrlt->contents == NULL)
8960 /* Build the stubs as directed by the stub hash table. */
8961 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
8963 for (stub_sec = htab->stub_bfd->sections;
8965 stub_sec = stub_sec->next)
8966 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
8968 stub_sec_count += 1;
8969 if (stub_sec->rawsize != stub_sec->size)
8973 if (stub_sec != NULL
8974 || htab->glink->rawsize != htab->glink->size)
8976 htab->stub_error = TRUE;
8977 (*_bfd_error_handler) (_("stubs don't match calculated size"));
8980 if (htab->stub_error)
8985 *stats = bfd_malloc (500);
8989 sprintf (*stats, _("linker stubs in %u group%s\n"
8992 " long branch %lu\n"
8993 " long toc adj %lu\n"
8996 stub_sec_count == 1 ? "" : "s",
8997 htab->stub_count[ppc_stub_long_branch - 1],
8998 htab->stub_count[ppc_stub_long_branch_r2off - 1],
8999 htab->stub_count[ppc_stub_plt_branch - 1],
9000 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9001 htab->stub_count[ppc_stub_plt_call - 1]);
9006 /* This function undoes the changes made by add_symbol_adjust. */
9009 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9011 struct ppc_link_hash_entry *eh;
9013 if (h->root.type == bfd_link_hash_indirect)
9016 if (h->root.type == bfd_link_hash_warning)
9017 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9019 eh = (struct ppc_link_hash_entry *) h;
9020 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9023 eh->elf.root.type = bfd_link_hash_undefined;
9028 ppc64_elf_restore_symbols (struct bfd_link_info *info)
9030 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9031 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9034 /* The RELOCATE_SECTION function is called by the ELF backend linker
9035 to handle the relocations for a section.
9037 The relocs are always passed as Rela structures; if the section
9038 actually uses Rel structures, the r_addend field will always be
9041 This function is responsible for adjust the section contents as
9042 necessary, and (if using Rela relocs and generating a
9043 relocatable output file) adjusting the reloc addend as
9046 This function does not have to worry about setting the reloc
9047 address or the reloc symbol index.
9049 LOCAL_SYMS is a pointer to the swapped in local symbols.
9051 LOCAL_SECTIONS is an array giving the section in the input file
9052 corresponding to the st_shndx field of each local symbol.
9054 The global hash table entry for the global symbols can be found
9055 via elf_sym_hashes (input_bfd).
9057 When generating relocatable output, this function must handle
9058 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9059 going to be the section symbol corresponding to the output
9060 section, which means that the addend must be adjusted
9064 ppc64_elf_relocate_section (bfd *output_bfd,
9065 struct bfd_link_info *info,
9067 asection *input_section,
9069 Elf_Internal_Rela *relocs,
9070 Elf_Internal_Sym *local_syms,
9071 asection **local_sections)
9073 struct ppc_link_hash_table *htab;
9074 Elf_Internal_Shdr *symtab_hdr;
9075 struct elf_link_hash_entry **sym_hashes;
9076 Elf_Internal_Rela *rel;
9077 Elf_Internal_Rela *relend;
9078 Elf_Internal_Rela outrel;
9080 struct got_entry **local_got_ents;
9082 bfd_boolean ret = TRUE;
9084 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9085 bfd_boolean is_power4 = FALSE;
9087 if (info->relocatable)
9090 /* Initialize howto table if needed. */
9091 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9094 htab = ppc_hash_table (info);
9096 /* Don't relocate stub sections. */
9097 if (input_section->owner == htab->stub_bfd)
9100 local_got_ents = elf_local_got_ents (input_bfd);
9101 TOCstart = elf_gp (output_bfd);
9102 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9103 sym_hashes = elf_sym_hashes (input_bfd);
9104 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
9107 relend = relocs + input_section->reloc_count;
9108 for (; rel < relend; rel++)
9110 enum elf_ppc64_reloc_type r_type;
9112 bfd_reloc_status_type r;
9113 Elf_Internal_Sym *sym;
9115 struct elf_link_hash_entry *h_elf;
9116 struct ppc_link_hash_entry *h;
9117 struct ppc_link_hash_entry *fdh;
9118 const char *sym_name;
9119 unsigned long r_symndx, toc_symndx;
9120 char tls_mask, tls_gd, tls_type;
9123 bfd_boolean unresolved_reloc;
9125 unsigned long insn, mask;
9126 struct ppc_stub_hash_entry *stub_entry;
9127 bfd_vma max_br_offset;
9130 r_type = ELF64_R_TYPE (rel->r_info);
9131 r_symndx = ELF64_R_SYM (rel->r_info);
9133 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9134 symbol of the previous ADDR64 reloc. The symbol gives us the
9135 proper TOC base to use. */
9136 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9138 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9140 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9146 unresolved_reloc = FALSE;
9149 if (r_symndx < symtab_hdr->sh_info)
9151 /* It's a local symbol. */
9154 sym = local_syms + r_symndx;
9155 sec = local_sections[r_symndx];
9156 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
9157 sym_type = ELF64_ST_TYPE (sym->st_info);
9158 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
9159 opd_adjust = get_opd_info (sec);
9160 if (opd_adjust != NULL)
9162 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
9166 relocation += adjust;
9171 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9172 r_symndx, symtab_hdr, sym_hashes,
9173 h_elf, sec, relocation,
9174 unresolved_reloc, warned);
9175 sym_name = h_elf->root.root.string;
9176 sym_type = h_elf->type;
9178 h = (struct ppc_link_hash_entry *) h_elf;
9180 /* TLS optimizations. Replace instruction sequences and relocs
9181 based on information we collected in tls_optimize. We edit
9182 RELOCS so that --emit-relocs will output something sensible
9183 for the final instruction stream. */
9187 if (IS_PPC64_TLS_RELOC (r_type))
9190 tls_mask = h->tls_mask;
9191 else if (local_got_ents != NULL)
9194 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9195 tls_mask = lgot_masks[r_symndx];
9197 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9199 /* Check for toc tls entries. */
9202 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9207 tls_mask = *toc_tls;
9211 /* Check that tls relocs are used with tls syms, and non-tls
9212 relocs are used with non-tls syms. */
9214 && r_type != R_PPC64_NONE
9216 || h->elf.root.type == bfd_link_hash_defined
9217 || h->elf.root.type == bfd_link_hash_defweak)
9218 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9220 if (r_type == R_PPC64_TLS && tls_mask != 0)
9221 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9224 (*_bfd_error_handler)
9225 (sym_type == STT_TLS
9226 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9227 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9230 (long) rel->r_offset,
9231 ppc64_elf_howto_table[r_type]->name,
9235 /* Ensure reloc mapping code below stays sane. */
9236 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9237 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9238 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9239 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9240 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9241 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9242 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9243 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9244 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9245 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9254 case R_PPC64_TOC16_LO:
9255 case R_PPC64_TOC16_DS:
9256 case R_PPC64_TOC16_LO_DS:
9258 /* Check for toc tls entries. */
9262 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9269 tls_mask = *toc_tls;
9270 if (r_type == R_PPC64_TOC16_DS
9271 || r_type == R_PPC64_TOC16_LO_DS)
9274 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9279 /* If we found a GD reloc pair, then we might be
9280 doing a GD->IE transition. */
9283 tls_gd = TLS_TPRELGD;
9284 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9285 goto tls_get_addr_check;
9287 else if (retval == 3)
9289 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9290 goto tls_get_addr_check;
9297 case R_PPC64_GOT_TPREL16_DS:
9298 case R_PPC64_GOT_TPREL16_LO_DS:
9300 && (tls_mask & TLS_TPREL) == 0)
9303 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9305 insn |= 0x3c0d0000; /* addis 0,13,0 */
9306 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9307 r_type = R_PPC64_TPREL16_HA;
9308 if (toc_symndx != 0)
9310 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9311 /* We changed the symbol. Start over in order to
9312 get h, sym, sec etc. right. */
9317 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9323 && (tls_mask & TLS_TPREL) == 0)
9326 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9327 if ((insn & ((0x3f << 26) | (31 << 11)))
9328 == ((31 << 26) | (13 << 11)))
9329 rtra = insn & ((1 << 26) - (1 << 16));
9330 else if ((insn & ((0x3f << 26) | (31 << 16)))
9331 == ((31 << 26) | (13 << 16)))
9332 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9335 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9338 else if ((insn & (31 << 1)) == 23 << 1
9339 && ((insn & (31 << 6)) < 14 << 6
9340 || ((insn & (31 << 6)) >= 16 << 6
9341 && (insn & (31 << 6)) < 24 << 6)))
9342 /* load and store indexed -> dform. */
9343 insn = (32 | ((insn >> 6) & 31)) << 26;
9344 else if ((insn & (31 << 1)) == 21 << 1
9345 && (insn & (0x1a << 6)) == 0)
9346 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9347 insn = (((58 | ((insn >> 6) & 4)) << 26)
9348 | ((insn >> 6) & 1));
9349 else if ((insn & (31 << 1)) == 21 << 1
9350 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9352 insn = (58 << 26) | 2;
9356 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9357 /* Was PPC64_TLS which sits on insn boundary, now
9358 PPC64_TPREL16_LO which is at insn+2. */
9360 r_type = R_PPC64_TPREL16_LO;
9361 if (toc_symndx != 0)
9363 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9364 /* We changed the symbol. Start over in order to
9365 get h, sym, sec etc. right. */
9370 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9374 case R_PPC64_GOT_TLSGD16_HI:
9375 case R_PPC64_GOT_TLSGD16_HA:
9376 tls_gd = TLS_TPRELGD;
9377 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9381 case R_PPC64_GOT_TLSLD16_HI:
9382 case R_PPC64_GOT_TLSLD16_HA:
9383 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9386 if ((tls_mask & tls_gd) != 0)
9387 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9388 + R_PPC64_GOT_TPREL16_DS);
9391 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9393 r_type = R_PPC64_NONE;
9395 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9399 case R_PPC64_GOT_TLSGD16:
9400 case R_PPC64_GOT_TLSGD16_LO:
9401 tls_gd = TLS_TPRELGD;
9402 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9403 goto tls_get_addr_check;
9406 case R_PPC64_GOT_TLSLD16:
9407 case R_PPC64_GOT_TLSLD16_LO:
9408 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9411 if (rel + 1 < relend)
9413 enum elf_ppc64_reloc_type r_type2;
9414 unsigned long r_symndx2;
9415 struct elf_link_hash_entry *h2;
9416 bfd_vma insn1, insn2, insn3;
9419 /* The next instruction should be a call to
9420 __tls_get_addr. Peek at the reloc to be sure. */
9421 r_type2 = ELF64_R_TYPE (rel[1].r_info);
9422 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9423 if (r_symndx2 < symtab_hdr->sh_info
9424 || (r_type2 != R_PPC64_REL14
9425 && r_type2 != R_PPC64_REL14_BRTAKEN
9426 && r_type2 != R_PPC64_REL14_BRNTAKEN
9427 && r_type2 != R_PPC64_REL24))
9430 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9431 while (h2->root.type == bfd_link_hash_indirect
9432 || h2->root.type == bfd_link_hash_warning)
9433 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
9434 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9435 && h2 != &htab->tls_get_addr_fd->elf))
9438 /* OK, it checks out. Replace the call. */
9439 offset = rel[1].r_offset;
9440 insn1 = bfd_get_32 (output_bfd,
9441 contents + rel->r_offset - 2);
9442 insn3 = bfd_get_32 (output_bfd,
9443 contents + offset + 4);
9444 if ((tls_mask & tls_gd) != 0)
9447 insn1 &= (1 << 26) - (1 << 2);
9448 insn1 |= 58 << 26; /* ld */
9449 insn2 = 0x7c636a14; /* add 3,3,13 */
9450 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9451 if ((tls_mask & TLS_EXPLICIT) == 0)
9452 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9453 + R_PPC64_GOT_TPREL16_DS);
9455 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9456 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9461 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9462 insn2 = 0x38630000; /* addi 3,3,0 */
9465 /* Was an LD reloc. */
9467 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9468 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9470 else if (toc_symndx != 0)
9471 r_symndx = toc_symndx;
9472 r_type = R_PPC64_TPREL16_HA;
9473 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9474 rel[1].r_info = ELF64_R_INFO (r_symndx,
9475 R_PPC64_TPREL16_LO);
9476 rel[1].r_offset += 2;
9479 || insn3 == CROR_151515 || insn3 == CROR_313131)
9483 rel[1].r_offset += 4;
9485 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9486 bfd_put_32 (output_bfd, insn2, contents + offset);
9487 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
9488 if (tls_gd == 0 || toc_symndx != 0)
9490 /* We changed the symbol. Start over in order
9491 to get h, sym, sec etc. right. */
9499 case R_PPC64_DTPMOD64:
9500 if (rel + 1 < relend
9501 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9502 && rel[1].r_offset == rel->r_offset + 8)
9504 if ((tls_mask & TLS_GD) == 0)
9506 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9507 if ((tls_mask & TLS_TPRELGD) != 0)
9508 r_type = R_PPC64_TPREL64;
9511 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9512 r_type = R_PPC64_NONE;
9514 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9519 if ((tls_mask & TLS_LD) == 0)
9521 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9522 r_type = R_PPC64_NONE;
9523 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9528 case R_PPC64_TPREL64:
9529 if ((tls_mask & TLS_TPREL) == 0)
9531 r_type = R_PPC64_NONE;
9532 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9537 /* Handle other relocations that tweak non-addend part of insn. */
9539 max_br_offset = 1 << 25;
9540 addend = rel->r_addend;
9546 /* Branch taken prediction relocations. */
9547 case R_PPC64_ADDR14_BRTAKEN:
9548 case R_PPC64_REL14_BRTAKEN:
9549 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9552 /* Branch not taken prediction relocations. */
9553 case R_PPC64_ADDR14_BRNTAKEN:
9554 case R_PPC64_REL14_BRNTAKEN:
9555 insn |= bfd_get_32 (output_bfd,
9556 contents + rel->r_offset) & ~(0x01 << 21);
9560 max_br_offset = 1 << 15;
9564 /* Calls to functions with a different TOC, such as calls to
9565 shared objects, need to alter the TOC pointer. This is
9566 done using a linkage stub. A REL24 branching to these
9567 linkage stubs needs to be followed by a nop, as the nop
9568 will be replaced with an instruction to restore the TOC
9573 && (((fdh = h->oh) != NULL
9574 && fdh->elf.plt.plist != NULL)
9575 || (fdh = h)->elf.plt.plist != NULL))
9577 && sec->output_section != NULL
9578 && sec->id <= htab->top_id
9579 && (htab->stub_group[sec->id].toc_off
9580 != htab->stub_group[input_section->id].toc_off)))
9581 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
9583 && (stub_entry->stub_type == ppc_stub_plt_call
9584 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9585 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
9587 bfd_boolean can_plt_call = FALSE;
9589 if (rel->r_offset + 8 <= input_section->size)
9592 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9594 || nop == CROR_151515 || nop == CROR_313131)
9596 bfd_put_32 (input_bfd, LD_R2_40R1,
9597 contents + rel->r_offset + 4);
9598 can_plt_call = TRUE;
9604 if (stub_entry->stub_type == ppc_stub_plt_call)
9606 /* If this is a plain branch rather than a branch
9607 and link, don't require a nop. */
9609 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9611 can_plt_call = TRUE;
9614 && strcmp (h->elf.root.root.string,
9615 ".__libc_start_main") == 0)
9617 /* Allow crt1 branch to go via a toc adjusting stub. */
9618 can_plt_call = TRUE;
9622 if (strcmp (input_section->output_section->name,
9624 || strcmp (input_section->output_section->name,
9626 (*_bfd_error_handler)
9627 (_("%B(%A+0x%lx): automatic multiple TOCs "
9628 "not supported using your crt files; "
9629 "recompile with -mminimal-toc or upgrade gcc"),
9632 (long) rel->r_offset);
9634 (*_bfd_error_handler)
9635 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9636 "does not allow automatic multiple TOCs; "
9637 "recompile with -mminimal-toc or "
9638 "-fno-optimize-sibling-calls, "
9639 "or make `%s' extern"),
9642 (long) rel->r_offset,
9645 bfd_set_error (bfd_error_bad_value);
9651 && stub_entry->stub_type == ppc_stub_plt_call)
9652 unresolved_reloc = FALSE;
9655 if (stub_entry == NULL
9656 && get_opd_info (sec) != NULL)
9658 /* The branch destination is the value of the opd entry. */
9659 bfd_vma off = (relocation - sec->output_section->vma
9660 - sec->output_offset + rel->r_addend);
9661 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9662 if (dest != (bfd_vma) -1)
9669 /* If the branch is out of reach we ought to have a long
9671 from = (rel->r_offset
9672 + input_section->output_offset
9673 + input_section->output_section->vma);
9675 if (stub_entry == NULL
9676 && (relocation + rel->r_addend - from + max_br_offset
9677 >= 2 * max_br_offset)
9678 && r_type != R_PPC64_ADDR14_BRTAKEN
9679 && r_type != R_PPC64_ADDR14_BRNTAKEN)
9680 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
9683 if (stub_entry != NULL)
9685 /* Munge up the value and addend so that we call the stub
9686 rather than the procedure directly. */
9687 relocation = (stub_entry->stub_offset
9688 + stub_entry->stub_sec->output_offset
9689 + stub_entry->stub_sec->output_section->vma);
9697 /* Set 'a' bit. This is 0b00010 in BO field for branch
9698 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9699 for branch on CTR insns (BO == 1a00t or 1a01t). */
9700 if ((insn & (0x14 << 21)) == (0x04 << 21))
9702 else if ((insn & (0x14 << 21)) == (0x10 << 21))
9709 /* Invert 'y' bit if not the default. */
9710 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
9714 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9717 /* NOP out calls to undefined weak functions.
9718 We can thus call a weak function without first
9719 checking whether the function is defined. */
9721 && h->elf.root.type == bfd_link_hash_undefweak
9722 && r_type == R_PPC64_REL24
9724 && rel->r_addend == 0)
9726 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9737 (*_bfd_error_handler)
9738 (_("%B: unknown relocation type %d for symbol %s"),
9739 input_bfd, (int) r_type, sym_name);
9741 bfd_set_error (bfd_error_bad_value);
9747 case R_PPC64_GNU_VTINHERIT:
9748 case R_PPC64_GNU_VTENTRY:
9751 /* GOT16 relocations. Like an ADDR16 using the symbol's
9752 address in the GOT as relocation value instead of the
9753 symbol's value itself. Also, create a GOT entry for the
9754 symbol and put the symbol value there. */
9755 case R_PPC64_GOT_TLSGD16:
9756 case R_PPC64_GOT_TLSGD16_LO:
9757 case R_PPC64_GOT_TLSGD16_HI:
9758 case R_PPC64_GOT_TLSGD16_HA:
9759 tls_type = TLS_TLS | TLS_GD;
9762 case R_PPC64_GOT_TLSLD16:
9763 case R_PPC64_GOT_TLSLD16_LO:
9764 case R_PPC64_GOT_TLSLD16_HI:
9765 case R_PPC64_GOT_TLSLD16_HA:
9766 tls_type = TLS_TLS | TLS_LD;
9769 case R_PPC64_GOT_TPREL16_DS:
9770 case R_PPC64_GOT_TPREL16_LO_DS:
9771 case R_PPC64_GOT_TPREL16_HI:
9772 case R_PPC64_GOT_TPREL16_HA:
9773 tls_type = TLS_TLS | TLS_TPREL;
9776 case R_PPC64_GOT_DTPREL16_DS:
9777 case R_PPC64_GOT_DTPREL16_LO_DS:
9778 case R_PPC64_GOT_DTPREL16_HI:
9779 case R_PPC64_GOT_DTPREL16_HA:
9780 tls_type = TLS_TLS | TLS_DTPREL;
9784 case R_PPC64_GOT16_LO:
9785 case R_PPC64_GOT16_HI:
9786 case R_PPC64_GOT16_HA:
9787 case R_PPC64_GOT16_DS:
9788 case R_PPC64_GOT16_LO_DS:
9791 /* Relocation is to the entry for this symbol in the global
9796 unsigned long indx = 0;
9798 if (tls_type == (TLS_TLS | TLS_LD)
9800 || !h->elf.def_dynamic))
9801 offp = &ppc64_tlsld_got (input_bfd)->offset;
9804 struct got_entry *ent;
9808 bfd_boolean dyn = htab->elf.dynamic_sections_created;
9809 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
9812 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
9813 /* This is actually a static link, or it is a
9814 -Bsymbolic link and the symbol is defined
9815 locally, or the symbol was forced to be local
9816 because of a version file. */
9820 indx = h->elf.dynindx;
9821 unresolved_reloc = FALSE;
9823 ent = h->elf.got.glist;
9827 if (local_got_ents == NULL)
9829 ent = local_got_ents[r_symndx];
9832 for (; ent != NULL; ent = ent->next)
9833 if (ent->addend == rel->r_addend
9834 && ent->owner == input_bfd
9835 && ent->tls_type == tls_type)
9839 offp = &ent->got.offset;
9842 got = ppc64_elf_tdata (input_bfd)->got;
9846 /* The offset must always be a multiple of 8. We use the
9847 least significant bit to record whether we have already
9848 processed this entry. */
9854 /* Generate relocs for the dynamic linker, except in
9855 the case of TLSLD where we'll use one entry per
9857 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
9860 if ((info->shared || indx != 0)
9862 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
9863 || h->elf.root.type != bfd_link_hash_undefweak))
9865 outrel.r_offset = (got->output_section->vma
9866 + got->output_offset
9868 outrel.r_addend = rel->r_addend;
9869 if (tls_type & (TLS_LD | TLS_GD))
9871 outrel.r_addend = 0;
9872 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
9873 if (tls_type == (TLS_TLS | TLS_GD))
9875 loc = relgot->contents;
9876 loc += (relgot->reloc_count++
9877 * sizeof (Elf64_External_Rela));
9878 bfd_elf64_swap_reloca_out (output_bfd,
9880 outrel.r_offset += 8;
9881 outrel.r_addend = rel->r_addend;
9883 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
9886 else if (tls_type == (TLS_TLS | TLS_DTPREL))
9887 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
9888 else if (tls_type == (TLS_TLS | TLS_TPREL))
9889 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
9892 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
9894 /* Write the .got section contents for the sake
9896 loc = got->contents + off;
9897 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
9901 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
9903 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
9905 outrel.r_addend += relocation;
9906 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
9907 outrel.r_addend -= htab->elf.tls_sec->vma;
9909 loc = relgot->contents;
9910 loc += (relgot->reloc_count++
9911 * sizeof (Elf64_External_Rela));
9912 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
9915 /* Init the .got section contents here if we're not
9916 emitting a reloc. */
9919 relocation += rel->r_addend;
9920 if (tls_type == (TLS_TLS | TLS_LD))
9922 else if (tls_type != 0)
9924 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
9925 if (tls_type == (TLS_TLS | TLS_TPREL))
9926 relocation += DTP_OFFSET - TP_OFFSET;
9928 if (tls_type == (TLS_TLS | TLS_GD))
9930 bfd_put_64 (output_bfd, relocation,
9931 got->contents + off + 8);
9936 bfd_put_64 (output_bfd, relocation,
9937 got->contents + off);
9941 if (off >= (bfd_vma) -2)
9944 relocation = got->output_offset + off;
9946 /* TOC base (r2) is TOC start plus 0x8000. */
9947 addend = -TOC_BASE_OFF;
9951 case R_PPC64_PLT16_HA:
9952 case R_PPC64_PLT16_HI:
9953 case R_PPC64_PLT16_LO:
9956 /* Relocation is to the entry for this symbol in the
9957 procedure linkage table. */
9959 /* Resolve a PLT reloc against a local symbol directly,
9960 without using the procedure linkage table. */
9964 /* It's possible that we didn't make a PLT entry for this
9965 symbol. This happens when statically linking PIC code,
9966 or when using -Bsymbolic. Go find a match if there is a
9968 if (htab->plt != NULL)
9970 struct plt_entry *ent;
9971 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
9972 if (ent->addend == rel->r_addend
9973 && ent->plt.offset != (bfd_vma) -1)
9975 relocation = (htab->plt->output_section->vma
9976 + htab->plt->output_offset
9978 unresolved_reloc = FALSE;
9984 /* Relocation value is TOC base. */
9985 relocation = TOCstart;
9987 relocation += htab->stub_group[input_section->id].toc_off;
9988 else if (unresolved_reloc)
9990 else if (sec != NULL && sec->id <= htab->top_id)
9991 relocation += htab->stub_group[sec->id].toc_off;
9993 unresolved_reloc = TRUE;
9996 /* TOC16 relocs. We want the offset relative to the TOC base,
9997 which is the address of the start of the TOC plus 0x8000.
9998 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10000 case R_PPC64_TOC16:
10001 case R_PPC64_TOC16_LO:
10002 case R_PPC64_TOC16_HI:
10003 case R_PPC64_TOC16_DS:
10004 case R_PPC64_TOC16_LO_DS:
10005 case R_PPC64_TOC16_HA:
10006 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
10009 /* Relocate against the beginning of the section. */
10010 case R_PPC64_SECTOFF:
10011 case R_PPC64_SECTOFF_LO:
10012 case R_PPC64_SECTOFF_HI:
10013 case R_PPC64_SECTOFF_DS:
10014 case R_PPC64_SECTOFF_LO_DS:
10015 case R_PPC64_SECTOFF_HA:
10017 addend -= sec->output_section->vma;
10020 case R_PPC64_REL14:
10021 case R_PPC64_REL14_BRNTAKEN:
10022 case R_PPC64_REL14_BRTAKEN:
10023 case R_PPC64_REL24:
10026 case R_PPC64_TPREL16:
10027 case R_PPC64_TPREL16_LO:
10028 case R_PPC64_TPREL16_HI:
10029 case R_PPC64_TPREL16_HA:
10030 case R_PPC64_TPREL16_DS:
10031 case R_PPC64_TPREL16_LO_DS:
10032 case R_PPC64_TPREL16_HIGHER:
10033 case R_PPC64_TPREL16_HIGHERA:
10034 case R_PPC64_TPREL16_HIGHEST:
10035 case R_PPC64_TPREL16_HIGHESTA:
10036 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10038 /* The TPREL16 relocs shouldn't really be used in shared
10039 libs as they will result in DT_TEXTREL being set, but
10040 support them anyway. */
10044 case R_PPC64_DTPREL16:
10045 case R_PPC64_DTPREL16_LO:
10046 case R_PPC64_DTPREL16_HI:
10047 case R_PPC64_DTPREL16_HA:
10048 case R_PPC64_DTPREL16_DS:
10049 case R_PPC64_DTPREL16_LO_DS:
10050 case R_PPC64_DTPREL16_HIGHER:
10051 case R_PPC64_DTPREL16_HIGHERA:
10052 case R_PPC64_DTPREL16_HIGHEST:
10053 case R_PPC64_DTPREL16_HIGHESTA:
10054 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10057 case R_PPC64_DTPMOD64:
10062 case R_PPC64_TPREL64:
10063 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10066 case R_PPC64_DTPREL64:
10067 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10070 /* Relocations that may need to be propagated if this is a
10072 case R_PPC64_REL30:
10073 case R_PPC64_REL32:
10074 case R_PPC64_REL64:
10075 case R_PPC64_ADDR14:
10076 case R_PPC64_ADDR14_BRNTAKEN:
10077 case R_PPC64_ADDR14_BRTAKEN:
10078 case R_PPC64_ADDR16:
10079 case R_PPC64_ADDR16_DS:
10080 case R_PPC64_ADDR16_HA:
10081 case R_PPC64_ADDR16_HI:
10082 case R_PPC64_ADDR16_HIGHER:
10083 case R_PPC64_ADDR16_HIGHERA:
10084 case R_PPC64_ADDR16_HIGHEST:
10085 case R_PPC64_ADDR16_HIGHESTA:
10086 case R_PPC64_ADDR16_LO:
10087 case R_PPC64_ADDR16_LO_DS:
10088 case R_PPC64_ADDR24:
10089 case R_PPC64_ADDR32:
10090 case R_PPC64_ADDR64:
10091 case R_PPC64_UADDR16:
10092 case R_PPC64_UADDR32:
10093 case R_PPC64_UADDR64:
10094 /* r_symndx will be zero only for relocs against symbols
10095 from removed linkonce sections, or sections discarded by
10096 a linker script. */
10103 if ((input_section->flags & SEC_ALLOC) == 0)
10106 if (NO_OPD_RELOCS && is_opd)
10111 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10112 || h->elf.root.type != bfd_link_hash_undefweak)
10113 && (MUST_BE_DYN_RELOC (r_type)
10114 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
10115 || (ELIMINATE_COPY_RELOCS
10118 && h->elf.dynindx != -1
10119 && !h->elf.non_got_ref
10120 && h->elf.def_dynamic
10121 && !h->elf.def_regular))
10123 Elf_Internal_Rela outrel;
10124 bfd_boolean skip, relocate;
10129 /* When generating a dynamic object, these relocations
10130 are copied into the output file to be resolved at run
10136 out_off = _bfd_elf_section_offset (output_bfd, info,
10137 input_section, rel->r_offset);
10138 if (out_off == (bfd_vma) -1)
10140 else if (out_off == (bfd_vma) -2)
10141 skip = TRUE, relocate = TRUE;
10142 out_off += (input_section->output_section->vma
10143 + input_section->output_offset);
10144 outrel.r_offset = out_off;
10145 outrel.r_addend = rel->r_addend;
10147 /* Optimize unaligned reloc use. */
10148 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10149 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10150 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10151 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10152 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10153 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10154 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10155 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10156 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10159 memset (&outrel, 0, sizeof outrel);
10160 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
10162 && r_type != R_PPC64_TOC)
10163 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
10166 /* This symbol is local, or marked to become local,
10167 or this is an opd section reloc which must point
10168 at a local function. */
10169 outrel.r_addend += relocation;
10170 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
10172 if (is_opd && h != NULL)
10174 /* Lie about opd entries. This case occurs
10175 when building shared libraries and we
10176 reference a function in another shared
10177 lib. The same thing happens for a weak
10178 definition in an application that's
10179 overridden by a strong definition in a
10180 shared lib. (I believe this is a generic
10181 bug in binutils handling of weak syms.)
10182 In these cases we won't use the opd
10183 entry in this lib. */
10184 unresolved_reloc = FALSE;
10186 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10188 /* We need to relocate .opd contents for ld.so.
10189 Prelink also wants simple and consistent rules
10190 for relocs. This make all RELATIVE relocs have
10191 *r_offset equal to r_addend. */
10198 if (bfd_is_abs_section (sec))
10200 else if (sec == NULL || sec->owner == NULL)
10202 bfd_set_error (bfd_error_bad_value);
10209 osec = sec->output_section;
10210 indx = elf_section_data (osec)->dynindx;
10212 /* We are turning this relocation into one
10213 against a section symbol, so subtract out
10214 the output section's address but not the
10215 offset of the input section in the output
10217 outrel.r_addend -= osec->vma;
10220 outrel.r_info = ELF64_R_INFO (indx, r_type);
10224 sreloc = elf_section_data (input_section)->sreloc;
10225 if (sreloc == NULL)
10228 loc = sreloc->contents;
10229 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
10230 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10232 /* If this reloc is against an external symbol, it will
10233 be computed at runtime, so there's no need to do
10234 anything now. However, for the sake of prelink ensure
10235 that the section contents are a known value. */
10238 unresolved_reloc = FALSE;
10239 /* The value chosen here is quite arbitrary as ld.so
10240 ignores section contents except for the special
10241 case of .opd where the contents might be accessed
10242 before relocation. Choose zero, as that won't
10243 cause reloc overflow. */
10246 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10247 to improve backward compatibility with older
10249 if (r_type == R_PPC64_ADDR64)
10250 addend = outrel.r_addend;
10251 /* Adjust pc_relative relocs to have zero in *r_offset. */
10252 else if (ppc64_elf_howto_table[r_type]->pc_relative)
10253 addend = (input_section->output_section->vma
10254 + input_section->output_offset
10261 case R_PPC64_GLOB_DAT:
10262 case R_PPC64_JMP_SLOT:
10263 case R_PPC64_RELATIVE:
10264 /* We shouldn't ever see these dynamic relocs in relocatable
10266 /* Fall through. */
10268 case R_PPC64_PLTGOT16:
10269 case R_PPC64_PLTGOT16_DS:
10270 case R_PPC64_PLTGOT16_HA:
10271 case R_PPC64_PLTGOT16_HI:
10272 case R_PPC64_PLTGOT16_LO:
10273 case R_PPC64_PLTGOT16_LO_DS:
10274 case R_PPC64_PLTREL32:
10275 case R_PPC64_PLTREL64:
10276 /* These ones haven't been implemented yet. */
10278 (*_bfd_error_handler)
10279 (_("%B: relocation %s is not supported for symbol %s."),
10281 ppc64_elf_howto_table[r_type]->name, sym_name);
10283 bfd_set_error (bfd_error_invalid_operation);
10288 /* Do any further special processing. */
10294 case R_PPC64_ADDR16_HA:
10295 case R_PPC64_ADDR16_HIGHERA:
10296 case R_PPC64_ADDR16_HIGHESTA:
10297 case R_PPC64_GOT16_HA:
10298 case R_PPC64_PLTGOT16_HA:
10299 case R_PPC64_PLT16_HA:
10300 case R_PPC64_TOC16_HA:
10301 case R_PPC64_SECTOFF_HA:
10302 case R_PPC64_TPREL16_HA:
10303 case R_PPC64_DTPREL16_HA:
10304 case R_PPC64_GOT_TLSGD16_HA:
10305 case R_PPC64_GOT_TLSLD16_HA:
10306 case R_PPC64_GOT_TPREL16_HA:
10307 case R_PPC64_GOT_DTPREL16_HA:
10308 case R_PPC64_TPREL16_HIGHER:
10309 case R_PPC64_TPREL16_HIGHERA:
10310 case R_PPC64_TPREL16_HIGHEST:
10311 case R_PPC64_TPREL16_HIGHESTA:
10312 case R_PPC64_DTPREL16_HIGHER:
10313 case R_PPC64_DTPREL16_HIGHERA:
10314 case R_PPC64_DTPREL16_HIGHEST:
10315 case R_PPC64_DTPREL16_HIGHESTA:
10316 /* It's just possible that this symbol is a weak symbol
10317 that's not actually defined anywhere. In that case,
10318 'sec' would be NULL, and we should leave the symbol
10319 alone (it will be set to zero elsewhere in the link). */
10321 /* Add 0x10000 if sign bit in 0:15 is set.
10322 Bits 0:15 are not used. */
10326 case R_PPC64_ADDR16_DS:
10327 case R_PPC64_ADDR16_LO_DS:
10328 case R_PPC64_GOT16_DS:
10329 case R_PPC64_GOT16_LO_DS:
10330 case R_PPC64_PLT16_LO_DS:
10331 case R_PPC64_SECTOFF_DS:
10332 case R_PPC64_SECTOFF_LO_DS:
10333 case R_PPC64_TOC16_DS:
10334 case R_PPC64_TOC16_LO_DS:
10335 case R_PPC64_PLTGOT16_DS:
10336 case R_PPC64_PLTGOT16_LO_DS:
10337 case R_PPC64_GOT_TPREL16_DS:
10338 case R_PPC64_GOT_TPREL16_LO_DS:
10339 case R_PPC64_GOT_DTPREL16_DS:
10340 case R_PPC64_GOT_DTPREL16_LO_DS:
10341 case R_PPC64_TPREL16_DS:
10342 case R_PPC64_TPREL16_LO_DS:
10343 case R_PPC64_DTPREL16_DS:
10344 case R_PPC64_DTPREL16_LO_DS:
10345 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10347 /* If this reloc is against an lq insn, then the value must be
10348 a multiple of 16. This is somewhat of a hack, but the
10349 "correct" way to do this by defining _DQ forms of all the
10350 _DS relocs bloats all reloc switches in this file. It
10351 doesn't seem to make much sense to use any of these relocs
10352 in data, so testing the insn should be safe. */
10353 if ((insn & (0x3f << 26)) == (56u << 26))
10355 if (((relocation + addend) & mask) != 0)
10357 (*_bfd_error_handler)
10358 (_("%B: error: relocation %s not a multiple of %d"),
10360 ppc64_elf_howto_table[r_type]->name,
10362 bfd_set_error (bfd_error_bad_value);
10369 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10370 because such sections are not SEC_ALLOC and thus ld.so will
10371 not process them. */
10372 if (unresolved_reloc
10373 && !((input_section->flags & SEC_DEBUGGING) != 0
10374 && h->elf.def_dynamic))
10376 (*_bfd_error_handler)
10377 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10380 (long) rel->r_offset,
10381 ppc64_elf_howto_table[(int) r_type]->name,
10382 h->elf.root.root.string);
10386 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
10394 if (r != bfd_reloc_ok)
10396 if (sym_name == NULL)
10397 sym_name = "(null)";
10398 if (r == bfd_reloc_overflow)
10403 && h->elf.root.type == bfd_link_hash_undefweak
10404 && ppc64_elf_howto_table[r_type]->pc_relative)
10406 /* Assume this is a call protected by other code that
10407 detects the symbol is undefined. If this is the case,
10408 we can safely ignore the overflow. If not, the
10409 program is hosed anyway, and a little warning isn't
10415 if (!((*info->callbacks->reloc_overflow)
10416 (info, (h ? &h->elf.root : NULL), sym_name,
10417 ppc64_elf_howto_table[r_type]->name,
10418 rel->r_addend, input_bfd, input_section, rel->r_offset)))
10423 (*_bfd_error_handler)
10424 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10427 (long) rel->r_offset,
10428 ppc64_elf_howto_table[r_type]->name,
10436 /* If we're emitting relocations, then shortly after this function
10437 returns, reloc offsets and addends for this section will be
10438 adjusted. Worse, reloc symbol indices will be for the output
10439 file rather than the input. Save a copy of the relocs for
10440 opd_entry_value. */
10441 if (is_opd && info->emitrelocations)
10444 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10445 rel = bfd_alloc (input_bfd, amt);
10446 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10447 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10450 memcpy (rel, relocs, amt);
10455 /* Adjust the value of any local symbols in opd sections. */
10458 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10459 const char *name ATTRIBUTE_UNUSED,
10460 Elf_Internal_Sym *elfsym,
10461 asection *input_sec,
10462 struct elf_link_hash_entry *h)
10464 long *opd_adjust, adjust;
10470 opd_adjust = get_opd_info (input_sec);
10471 if (opd_adjust == NULL)
10474 value = elfsym->st_value - input_sec->output_offset;
10475 if (!info->relocatable)
10476 value -= input_sec->output_section->vma;
10478 adjust = opd_adjust[value / 8];
10480 elfsym->st_value = 0;
10482 elfsym->st_value += adjust;
10486 /* Finish up dynamic symbol handling. We set the contents of various
10487 dynamic sections here. */
10490 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10491 struct bfd_link_info *info,
10492 struct elf_link_hash_entry *h,
10493 Elf_Internal_Sym *sym)
10495 struct ppc_link_hash_table *htab;
10497 struct plt_entry *ent;
10498 Elf_Internal_Rela rela;
10501 htab = ppc_hash_table (info);
10502 dynobj = htab->elf.dynobj;
10504 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10505 if (ent->plt.offset != (bfd_vma) -1)
10507 /* This symbol has an entry in the procedure linkage
10508 table. Set it up. */
10510 if (htab->plt == NULL
10511 || htab->relplt == NULL
10512 || htab->glink == NULL)
10515 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10516 fill in the PLT entry. */
10517 rela.r_offset = (htab->plt->output_section->vma
10518 + htab->plt->output_offset
10519 + ent->plt.offset);
10520 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10521 rela.r_addend = ent->addend;
10523 loc = htab->relplt->contents;
10524 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10525 * sizeof (Elf64_External_Rela));
10526 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10531 Elf_Internal_Rela rela;
10534 /* This symbol needs a copy reloc. Set it up. */
10536 if (h->dynindx == -1
10537 || (h->root.type != bfd_link_hash_defined
10538 && h->root.type != bfd_link_hash_defweak)
10539 || htab->relbss == NULL)
10542 rela.r_offset = (h->root.u.def.value
10543 + h->root.u.def.section->output_section->vma
10544 + h->root.u.def.section->output_offset);
10545 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10547 loc = htab->relbss->contents;
10548 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
10549 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10552 /* Mark some specially defined symbols as absolute. */
10553 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10554 sym->st_shndx = SHN_ABS;
10559 /* Used to decide how to sort relocs in an optimal manner for the
10560 dynamic linker, before writing them out. */
10562 static enum elf_reloc_type_class
10563 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
10565 enum elf_ppc64_reloc_type r_type;
10567 r_type = ELF64_R_TYPE (rela->r_info);
10570 case R_PPC64_RELATIVE:
10571 return reloc_class_relative;
10572 case R_PPC64_JMP_SLOT:
10573 return reloc_class_plt;
10575 return reloc_class_copy;
10577 return reloc_class_normal;
10581 /* Finish up the dynamic sections. */
10584 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10585 struct bfd_link_info *info)
10587 struct ppc_link_hash_table *htab;
10591 htab = ppc_hash_table (info);
10592 dynobj = htab->elf.dynobj;
10593 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10595 if (htab->elf.dynamic_sections_created)
10597 Elf64_External_Dyn *dyncon, *dynconend;
10599 if (sdyn == NULL || htab->got == NULL)
10602 dyncon = (Elf64_External_Dyn *) sdyn->contents;
10603 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
10604 for (; dyncon < dynconend; dyncon++)
10606 Elf_Internal_Dyn dyn;
10609 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10616 case DT_PPC64_GLINK:
10618 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10619 /* We stupidly defined DT_PPC64_GLINK to be the start
10620 of glink rather than the first entry point, which is
10621 what ld.so needs, and now have a bigger stub to
10622 support automatic multiple TOCs. */
10623 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
10627 s = bfd_get_section_by_name (output_bfd, ".opd");
10630 dyn.d_un.d_ptr = s->vma;
10633 case DT_PPC64_OPDSZ:
10634 s = bfd_get_section_by_name (output_bfd, ".opd");
10637 dyn.d_un.d_val = s->size;
10642 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10647 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10651 dyn.d_un.d_val = htab->relplt->size;
10655 /* Don't count procedure linkage table relocs in the
10656 overall reloc count. */
10660 dyn.d_un.d_val -= s->size;
10664 /* We may not be using the standard ELF linker script.
10665 If .rela.plt is the first .rela section, we adjust
10666 DT_RELA to not include it. */
10670 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10672 dyn.d_un.d_ptr += s->size;
10676 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
10680 if (htab->got != NULL && htab->got->size != 0)
10682 /* Fill in the first entry in the global offset table.
10683 We use it to hold the link-time TOCbase. */
10684 bfd_put_64 (output_bfd,
10685 elf_gp (output_bfd) + TOC_BASE_OFF,
10686 htab->got->contents);
10688 /* Set .got entry size. */
10689 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
10692 if (htab->plt != NULL && htab->plt->size != 0)
10694 /* Set .plt entry size. */
10695 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
10699 /* We need to handle writing out multiple GOT sections ourselves,
10700 since we didn't add them to DYNOBJ. We know dynobj is the first
10702 while ((dynobj = dynobj->link_next) != NULL)
10706 if (!is_ppc64_elf_target (dynobj->xvec))
10709 s = ppc64_elf_tdata (dynobj)->got;
10712 && s->output_section != bfd_abs_section_ptr
10713 && !bfd_set_section_contents (output_bfd, s->output_section,
10714 s->contents, s->output_offset,
10717 s = ppc64_elf_tdata (dynobj)->relgot;
10720 && s->output_section != bfd_abs_section_ptr
10721 && !bfd_set_section_contents (output_bfd, s->output_section,
10722 s->contents, s->output_offset,
10730 #include "elf64-target.h"