1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
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;
3211 unsigned int fake:1;
3213 /* Whether global opd/toc sym has been adjusted or not.
3214 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3215 should be set for all globals defined in any opd/toc section. */
3216 unsigned int adjust_done:1;
3218 /* Set if we twiddled this symbol to weak at some stage. */
3219 unsigned int was_undefined:1;
3221 /* Contexts in which symbol is used in the GOT (or TOC).
3222 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3223 corresponding relocs are encountered during check_relocs.
3224 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3225 indicate the corresponding GOT entry type is not needed.
3226 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3227 a TPREL one. We use a separate flag rather than setting TPREL
3228 just for convenience in distinguishing the two cases. */
3229 #define TLS_GD 1 /* GD reloc. */
3230 #define TLS_LD 2 /* LD reloc. */
3231 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3232 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3233 #define TLS_TLS 16 /* Any TLS reloc. */
3234 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3235 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3239 /* ppc64 ELF linker hash table. */
3241 struct ppc_link_hash_table
3243 struct elf_link_hash_table elf;
3245 /* The stub hash table. */
3246 struct bfd_hash_table stub_hash_table;
3248 /* Another hash table for plt_branch stubs. */
3249 struct bfd_hash_table branch_hash_table;
3251 /* Linker stub bfd. */
3254 /* Linker call-backs. */
3255 asection * (*add_stub_section) (const char *, asection *);
3256 void (*layout_sections_again) (void);
3258 /* Array to keep track of which stub sections have been created, and
3259 information on stub grouping. */
3261 /* This is the section to which stubs in the group will be attached. */
3263 /* The stub section. */
3265 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3269 /* Temp used when calculating TOC pointers. */
3272 /* Highest input section id. */
3275 /* Highest output section index. */
3278 /* List of input sections for each output section. */
3279 asection **input_list;
3281 /* Short-cuts to get to dynamic linker sections. */
3292 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3293 struct ppc_link_hash_entry *tls_get_addr;
3294 struct ppc_link_hash_entry *tls_get_addr_fd;
3297 unsigned long stub_count[ppc_stub_plt_call];
3299 /* Number of stubs against global syms. */
3300 unsigned long stub_globals;
3302 /* Set if we should emit symbols for stubs. */
3303 unsigned int emit_stub_syms:1;
3305 /* Support for multiple toc sections. */
3306 unsigned int no_multi_toc:1;
3307 unsigned int multi_toc_needed:1;
3310 unsigned int stub_error:1;
3312 /* Flag set when small branches are detected. Used to
3313 select suitable defaults for the stub group size. */
3314 unsigned int has_14bit_branch:1;
3316 /* Temp used by ppc64_elf_check_directives. */
3317 unsigned int twiddled_syms:1;
3319 /* Incremented every time we size stubs. */
3320 unsigned int stub_iteration;
3322 /* Small local sym to section mapping cache. */
3323 struct sym_sec_cache sym_sec;
3326 /* Rename some of the generic section flags to better document how they
3328 #define has_toc_reloc has_gp_reloc
3329 #define makes_toc_func_call need_finalize_relax
3330 #define call_check_in_progress reloc_done
3332 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3334 #define ppc_hash_table(p) \
3335 ((struct ppc_link_hash_table *) ((p)->hash))
3337 #define ppc_stub_hash_lookup(table, string, create, copy) \
3338 ((struct ppc_stub_hash_entry *) \
3339 bfd_hash_lookup ((table), (string), (create), (copy)))
3341 #define ppc_branch_hash_lookup(table, string, create, copy) \
3342 ((struct ppc_branch_hash_entry *) \
3343 bfd_hash_lookup ((table), (string), (create), (copy)))
3345 /* Create an entry in the stub hash table. */
3347 static struct bfd_hash_entry *
3348 stub_hash_newfunc (struct bfd_hash_entry *entry,
3349 struct bfd_hash_table *table,
3352 /* Allocate the structure if it has not already been allocated by a
3356 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3361 /* Call the allocation method of the superclass. */
3362 entry = bfd_hash_newfunc (entry, table, string);
3365 struct ppc_stub_hash_entry *eh;
3367 /* Initialize the local fields. */
3368 eh = (struct ppc_stub_hash_entry *) entry;
3369 eh->stub_type = ppc_stub_none;
3370 eh->stub_sec = NULL;
3371 eh->stub_offset = 0;
3372 eh->target_value = 0;
3373 eh->target_section = NULL;
3381 /* Create an entry in the branch hash table. */
3383 static struct bfd_hash_entry *
3384 branch_hash_newfunc (struct bfd_hash_entry *entry,
3385 struct bfd_hash_table *table,
3388 /* Allocate the structure if it has not already been allocated by a
3392 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3397 /* Call the allocation method of the superclass. */
3398 entry = bfd_hash_newfunc (entry, table, string);
3401 struct ppc_branch_hash_entry *eh;
3403 /* Initialize the local fields. */
3404 eh = (struct ppc_branch_hash_entry *) entry;
3412 /* Create an entry in a ppc64 ELF linker hash table. */
3414 static struct bfd_hash_entry *
3415 link_hash_newfunc (struct bfd_hash_entry *entry,
3416 struct bfd_hash_table *table,
3419 /* Allocate the structure if it has not already been allocated by a
3423 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3428 /* Call the allocation method of the superclass. */
3429 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3432 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3434 memset (&eh->stub_cache, 0,
3435 (sizeof (struct ppc_link_hash_entry)
3436 - offsetof (struct ppc_link_hash_entry, stub_cache)));
3442 /* Create a ppc64 ELF linker hash table. */
3444 static struct bfd_link_hash_table *
3445 ppc64_elf_link_hash_table_create (bfd *abfd)
3447 struct ppc_link_hash_table *htab;
3448 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3450 htab = bfd_zmalloc (amt);
3454 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3460 /* Init the stub hash table too. */
3461 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3464 /* And the branch hash table. */
3465 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3468 /* Initializing two fields of the union is just cosmetic. We really
3469 only care about glist, but when compiled on a 32-bit host the
3470 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3471 debugger inspection of these fields look nicer. */
3472 htab->elf.init_refcount.refcount = 0;
3473 htab->elf.init_refcount.glist = NULL;
3474 htab->elf.init_offset.offset = 0;
3475 htab->elf.init_offset.glist = NULL;
3477 return &htab->elf.root;
3480 /* Free the derived linker hash table. */
3483 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3485 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3487 bfd_hash_table_free (&ret->stub_hash_table);
3488 bfd_hash_table_free (&ret->branch_hash_table);
3489 _bfd_generic_link_hash_table_free (hash);
3492 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3495 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3497 struct ppc_link_hash_table *htab;
3499 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3501 /* Always hook our dynamic sections into the first bfd, which is the
3502 linker created stub bfd. This ensures that the GOT header is at
3503 the start of the output TOC section. */
3504 htab = ppc_hash_table (info);
3505 htab->stub_bfd = abfd;
3506 htab->elf.dynobj = abfd;
3509 /* Build a name for an entry in the stub hash table. */
3512 ppc_stub_name (const asection *input_section,
3513 const asection *sym_sec,
3514 const struct ppc_link_hash_entry *h,
3515 const Elf_Internal_Rela *rel)
3520 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3521 offsets from a sym as a branch target? In fact, we could
3522 probably assume the addend is always zero. */
3523 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3527 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3528 stub_name = bfd_malloc (len);
3529 if (stub_name != NULL)
3531 sprintf (stub_name, "%08x.%s+%x",
3532 input_section->id & 0xffffffff,
3533 h->elf.root.root.string,
3534 (int) rel->r_addend & 0xffffffff);
3539 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3540 stub_name = bfd_malloc (len);
3541 if (stub_name != NULL)
3543 sprintf (stub_name, "%08x.%x:%x+%x",
3544 input_section->id & 0xffffffff,
3545 sym_sec->id & 0xffffffff,
3546 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3547 (int) rel->r_addend & 0xffffffff);
3550 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3551 stub_name[len - 2] = 0;
3555 /* Look up an entry in the stub hash. Stub entries are cached because
3556 creating the stub name takes a bit of time. */
3558 static struct ppc_stub_hash_entry *
3559 ppc_get_stub_entry (const asection *input_section,
3560 const asection *sym_sec,
3561 struct ppc_link_hash_entry *h,
3562 const Elf_Internal_Rela *rel,
3563 struct ppc_link_hash_table *htab)
3565 struct ppc_stub_hash_entry *stub_entry;
3566 const asection *id_sec;
3568 /* If this input section is part of a group of sections sharing one
3569 stub section, then use the id of the first section in the group.
3570 Stub names need to include a section id, as there may well be
3571 more than one stub used to reach say, printf, and we need to
3572 distinguish between them. */
3573 id_sec = htab->stub_group[input_section->id].link_sec;
3575 if (h != NULL && h->stub_cache != NULL
3576 && h->stub_cache->h == h
3577 && h->stub_cache->id_sec == id_sec)
3579 stub_entry = h->stub_cache;
3585 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3586 if (stub_name == NULL)
3589 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3590 stub_name, FALSE, FALSE);
3592 h->stub_cache = stub_entry;
3600 /* Add a new stub entry to the stub hash. Not all fields of the new
3601 stub entry are initialised. */
3603 static struct ppc_stub_hash_entry *
3604 ppc_add_stub (const char *stub_name,
3606 struct ppc_link_hash_table *htab)
3610 struct ppc_stub_hash_entry *stub_entry;
3612 link_sec = htab->stub_group[section->id].link_sec;
3613 stub_sec = htab->stub_group[section->id].stub_sec;
3614 if (stub_sec == NULL)
3616 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3617 if (stub_sec == NULL)
3623 namelen = strlen (link_sec->name);
3624 len = namelen + sizeof (STUB_SUFFIX);
3625 s_name = bfd_alloc (htab->stub_bfd, len);
3629 memcpy (s_name, link_sec->name, namelen);
3630 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3631 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3632 if (stub_sec == NULL)
3634 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3636 htab->stub_group[section->id].stub_sec = stub_sec;
3639 /* Enter this entry into the linker stub hash table. */
3640 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3642 if (stub_entry == NULL)
3644 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3645 section->owner, stub_name);
3649 stub_entry->stub_sec = stub_sec;
3650 stub_entry->stub_offset = 0;
3651 stub_entry->id_sec = link_sec;
3655 /* Create sections for linker generated code. */
3658 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3660 struct ppc_link_hash_table *htab;
3663 htab = ppc_hash_table (info);
3665 /* Create .sfpr for code to save and restore fp regs. */
3666 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3667 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3668 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3669 if (htab->sfpr == NULL
3670 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3671 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3674 /* Create .glink for lazy dynamic linking support. */
3675 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3676 if (htab->glink == NULL
3677 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3678 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3681 /* Create .branch_lt for plt_branch stubs. */
3682 flags = (SEC_ALLOC | SEC_LOAD
3683 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3684 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3685 if (htab->brlt == NULL
3686 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3687 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3690 if (info->shared || info->emitrelocations)
3692 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3693 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3694 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3696 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3697 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3703 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3704 not already done. */
3707 create_got_section (bfd *abfd, struct bfd_link_info *info)
3709 asection *got, *relgot;
3711 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3715 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3718 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3723 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3724 | SEC_LINKER_CREATED);
3726 got = bfd_make_section (abfd, ".got");
3728 || !bfd_set_section_flags (abfd, got, flags)
3729 || !bfd_set_section_alignment (abfd, got, 3))
3732 relgot = bfd_make_section (abfd, ".rela.got");
3734 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3735 || ! bfd_set_section_alignment (abfd, relgot, 3))
3738 ppc64_elf_tdata (abfd)->got = got;
3739 ppc64_elf_tdata (abfd)->relgot = relgot;
3743 /* Create the dynamic sections, and set up shortcuts. */
3746 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3748 struct ppc_link_hash_table *htab;
3750 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3753 htab = ppc_hash_table (info);
3755 htab->got = bfd_get_section_by_name (dynobj, ".got");
3756 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3757 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3758 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3760 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3762 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3763 || (!info->shared && !htab->relbss))
3769 /* Merge PLT info on FROM with that on TO. */
3772 move_plt_plist (struct ppc_link_hash_entry *from,
3773 struct ppc_link_hash_entry *to)
3775 if (from->elf.plt.plist != NULL)
3777 if (to->elf.plt.plist != NULL)
3779 struct plt_entry **entp;
3780 struct plt_entry *ent;
3782 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3784 struct plt_entry *dent;
3786 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3787 if (dent->addend == ent->addend)
3789 dent->plt.refcount += ent->plt.refcount;
3796 *entp = to->elf.plt.plist;
3799 to->elf.plt.plist = from->elf.plt.plist;
3800 from->elf.plt.plist = NULL;
3804 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3807 ppc64_elf_copy_indirect_symbol
3808 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3809 struct elf_link_hash_entry *dir,
3810 struct elf_link_hash_entry *ind)
3812 struct ppc_link_hash_entry *edir, *eind;
3814 edir = (struct ppc_link_hash_entry *) dir;
3815 eind = (struct ppc_link_hash_entry *) ind;
3817 /* Copy over any dynamic relocs we may have on the indirect sym. */
3818 if (eind->dyn_relocs != NULL)
3820 if (edir->dyn_relocs != NULL)
3822 struct ppc_dyn_relocs **pp;
3823 struct ppc_dyn_relocs *p;
3825 if (eind->elf.root.type == bfd_link_hash_indirect)
3828 /* Add reloc counts against the weak sym to the strong sym
3829 list. Merge any entries against the same section. */
3830 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3832 struct ppc_dyn_relocs *q;
3834 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3835 if (q->sec == p->sec)
3837 q->pc_count += p->pc_count;
3838 q->count += p->count;
3845 *pp = edir->dyn_relocs;
3848 edir->dyn_relocs = eind->dyn_relocs;
3849 eind->dyn_relocs = NULL;
3852 edir->is_func |= eind->is_func;
3853 edir->is_func_descriptor |= eind->is_func_descriptor;
3854 edir->tls_mask |= eind->tls_mask;
3856 /* If called to transfer flags for a weakdef during processing
3857 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3858 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3859 if (!(ELIMINATE_COPY_RELOCS
3860 && eind->elf.root.type != bfd_link_hash_indirect
3861 && edir->elf.dynamic_adjusted))
3862 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3864 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3865 edir->elf.ref_regular |= eind->elf.ref_regular;
3866 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3867 edir->elf.needs_plt |= eind->elf.needs_plt;
3869 /* If we were called to copy over info for a weak sym, that's all. */
3870 if (eind->elf.root.type != bfd_link_hash_indirect)
3873 /* Copy over got entries that we may have already seen to the
3874 symbol which just became indirect. */
3875 if (eind->elf.got.glist != NULL)
3877 if (edir->elf.got.glist != NULL)
3879 struct got_entry **entp;
3880 struct got_entry *ent;
3882 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3884 struct got_entry *dent;
3886 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3887 if (dent->addend == ent->addend
3888 && dent->owner == ent->owner
3889 && dent->tls_type == ent->tls_type)
3891 dent->got.refcount += ent->got.refcount;
3898 *entp = edir->elf.got.glist;
3901 edir->elf.got.glist = eind->elf.got.glist;
3902 eind->elf.got.glist = NULL;
3905 /* And plt entries. */
3906 move_plt_plist (eind, edir);
3908 if (edir->elf.dynindx == -1)
3910 edir->elf.dynindx = eind->elf.dynindx;
3911 edir->elf.dynstr_index = eind->elf.dynstr_index;
3912 eind->elf.dynindx = -1;
3913 eind->elf.dynstr_index = 0;
3916 BFD_ASSERT (eind->elf.dynindx == -1);
3919 /* Find the function descriptor hash entry from the given function code
3920 hash entry FH. Link the entries via their OH fields. */
3922 static struct ppc_link_hash_entry *
3923 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3925 struct ppc_link_hash_entry *fdh = fh->oh;
3929 const char *fd_name = fh->elf.root.root.string + 1;
3931 fdh = (struct ppc_link_hash_entry *)
3932 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3935 fdh->is_func_descriptor = 1;
3945 /* Make a fake function descriptor sym for the code sym FH. */
3947 static struct ppc_link_hash_entry *
3948 make_fdh (struct bfd_link_info *info,
3949 struct ppc_link_hash_entry *fh)
3953 struct bfd_link_hash_entry *bh;
3954 struct ppc_link_hash_entry *fdh;
3956 abfd = fh->elf.root.u.undef.abfd;
3957 newsym = bfd_make_empty_symbol (abfd);
3958 newsym->name = fh->elf.root.root.string + 1;
3959 newsym->section = bfd_und_section_ptr;
3961 newsym->flags = BSF_WEAK;
3964 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
3965 newsym->flags, newsym->section,
3966 newsym->value, NULL, FALSE, FALSE,
3970 fdh = (struct ppc_link_hash_entry *) bh;
3971 fdh->elf.non_elf = 0;
3973 fdh->is_func_descriptor = 1;
3980 /* Hacks to support old ABI code.
3981 When making function calls, old ABI code references function entry
3982 points (dot symbols), while new ABI code references the function
3983 descriptor symbol. We need to make any combination of reference and
3984 definition work together, without breaking archive linking.
3986 For a defined function "foo" and an undefined call to "bar":
3987 An old object defines "foo" and ".foo", references ".bar" (possibly
3989 A new object defines "foo" and references "bar".
3991 A new object thus has no problem with its undefined symbols being
3992 satisfied by definitions in an old object. On the other hand, the
3993 old object won't have ".bar" satisfied by a new object. */
3995 /* Fix function descriptor symbols defined in .opd sections to be
3999 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
4000 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4001 Elf_Internal_Sym *isym,
4002 const char **name ATTRIBUTE_UNUSED,
4003 flagword *flags ATTRIBUTE_UNUSED,
4005 bfd_vma *value ATTRIBUTE_UNUSED)
4008 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
4009 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4013 /* This function makes an old ABI object reference to ".bar" cause the
4014 inclusion of a new ABI object archive that defines "bar".
4015 NAME is a symbol defined in an archive. Return a symbol in the hash
4016 table that might be satisfied by the archive symbols. */
4018 static struct elf_link_hash_entry *
4019 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4020 struct bfd_link_info *info,
4023 struct elf_link_hash_entry *h;
4027 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4029 /* Don't return this sym if it is a fake function descriptor
4030 created by add_symbol_adjust. */
4031 && !(h->root.type == bfd_link_hash_undefweak
4032 && ((struct ppc_link_hash_entry *) h)->fake))
4038 len = strlen (name);
4039 dot_name = bfd_alloc (abfd, len + 2);
4040 if (dot_name == NULL)
4041 return (struct elf_link_hash_entry *) 0 - 1;
4043 memcpy (dot_name + 1, name, len + 1);
4044 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4045 bfd_release (abfd, dot_name);
4049 /* This function satisfies all old ABI object references to ".bar" if a
4050 new ABI object defines "bar". Well, at least, undefined dot symbols
4051 are made weak. This stops later archive searches from including an
4052 object if we already have a function descriptor definition. It also
4053 prevents the linker complaining about undefined symbols.
4054 We also check and correct mismatched symbol visibility here. The
4055 most restrictive visibility of the function descriptor and the
4056 function entry symbol is used. */
4058 struct add_symbol_adjust_data
4060 struct bfd_link_info *info;
4065 add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4067 struct add_symbol_adjust_data *data;
4068 struct ppc_link_hash_table *htab;
4069 struct ppc_link_hash_entry *eh;
4070 struct ppc_link_hash_entry *fdh;
4072 if (h->root.type == bfd_link_hash_indirect)
4075 if (h->root.type == bfd_link_hash_warning)
4076 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4078 if (h->root.root.string[0] != '.')
4082 htab = ppc_hash_table (data->info);
4083 eh = (struct ppc_link_hash_entry *) h;
4084 fdh = get_fdh (eh, htab);
4086 && !data->info->relocatable
4087 && (eh->elf.root.type == bfd_link_hash_undefined
4088 || eh->elf.root.type == bfd_link_hash_undefweak)
4089 && eh->elf.ref_regular)
4091 /* Make an undefweak function descriptor sym, which is enough to
4092 pull in an --as-needed shared lib, but won't cause link
4093 errors. Archives are handled elsewhere. */
4094 fdh = make_fdh (data->info, eh);
4098 fdh->elf.ref_regular = 1;
4100 else if (fdh != NULL
4101 && (fdh->elf.root.type == bfd_link_hash_defined
4102 || fdh->elf.root.type == bfd_link_hash_defweak))
4104 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4105 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4106 if (entry_vis < descr_vis)
4107 fdh->elf.other += entry_vis - descr_vis;
4108 else if (entry_vis > descr_vis)
4109 eh->elf.other += descr_vis - entry_vis;
4111 if (eh->elf.root.type == bfd_link_hash_undefined)
4113 eh->elf.root.type = bfd_link_hash_undefweak;
4114 eh->was_undefined = 1;
4115 htab->twiddled_syms = 1;
4123 ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4124 struct bfd_link_info *info)
4126 struct ppc_link_hash_table *htab;
4127 struct add_symbol_adjust_data data;
4129 htab = ppc_hash_table (info);
4130 if (!is_ppc64_elf_target (htab->elf.root.creator))
4135 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
4137 /* We need to fix the undefs list for any syms we have twiddled to
4139 if (htab->twiddled_syms)
4141 bfd_link_repair_undef_list (&htab->elf.root);
4142 htab->twiddled_syms = 0;
4148 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4149 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4151 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4152 char *local_got_tls_masks;
4154 if (local_got_ents == NULL)
4156 bfd_size_type size = symtab_hdr->sh_info;
4158 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4159 local_got_ents = bfd_zalloc (abfd, size);
4160 if (local_got_ents == NULL)
4162 elf_local_got_ents (abfd) = local_got_ents;
4165 if ((tls_type & TLS_EXPLICIT) == 0)
4167 struct got_entry *ent;
4169 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4170 if (ent->addend == r_addend
4171 && ent->owner == abfd
4172 && ent->tls_type == tls_type)
4176 bfd_size_type amt = sizeof (*ent);
4177 ent = bfd_alloc (abfd, amt);
4180 ent->next = local_got_ents[r_symndx];
4181 ent->addend = r_addend;
4183 ent->tls_type = tls_type;
4184 ent->got.refcount = 0;
4185 local_got_ents[r_symndx] = ent;
4187 ent->got.refcount += 1;
4190 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4191 local_got_tls_masks[r_symndx] |= tls_type;
4196 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4198 struct plt_entry *ent;
4200 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4201 if (ent->addend == addend)
4205 bfd_size_type amt = sizeof (*ent);
4206 ent = bfd_alloc (abfd, amt);
4209 ent->next = eh->elf.plt.plist;
4210 ent->addend = addend;
4211 ent->plt.refcount = 0;
4212 eh->elf.plt.plist = ent;
4214 ent->plt.refcount += 1;
4215 eh->elf.needs_plt = 1;
4220 /* Look through the relocs for a section during the first phase, and
4221 calculate needed space in the global offset table, procedure
4222 linkage table, and dynamic reloc sections. */
4225 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4226 asection *sec, const Elf_Internal_Rela *relocs)
4228 struct ppc_link_hash_table *htab;
4229 Elf_Internal_Shdr *symtab_hdr;
4230 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4231 const Elf_Internal_Rela *rel;
4232 const Elf_Internal_Rela *rel_end;
4234 asection **opd_sym_map;
4236 if (info->relocatable)
4239 /* Don't do anything special with non-loaded, non-alloced sections.
4240 In particular, any relocs in such sections should not affect GOT
4241 and PLT reference counting (ie. we don't allow them to create GOT
4242 or PLT entries), there's no possibility or desire to optimize TLS
4243 relocs, and there's not much point in propagating relocs to shared
4244 libs that the dynamic linker won't relocate. */
4245 if ((sec->flags & SEC_ALLOC) == 0)
4248 htab = ppc_hash_table (info);
4249 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4251 sym_hashes = elf_sym_hashes (abfd);
4252 sym_hashes_end = (sym_hashes
4253 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4254 - symtab_hdr->sh_info);
4258 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4260 /* Garbage collection needs some extra help with .opd sections.
4261 We don't want to necessarily keep everything referenced by
4262 relocs in .opd, as that would keep all functions. Instead,
4263 if we reference an .opd symbol (a function descriptor), we
4264 want to keep the function code symbol's section. This is
4265 easy for global symbols, but for local syms we need to keep
4266 information about the associated function section. Later, if
4267 edit_opd deletes entries, we'll use this array to adjust
4268 local syms in .opd. */
4270 asection *func_section;
4275 amt = sec->size * sizeof (union opd_info) / 8;
4276 opd_sym_map = bfd_zalloc (abfd, amt);
4277 if (opd_sym_map == NULL)
4279 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
4282 if (htab->sfpr == NULL
4283 && !create_linkage_sections (htab->elf.dynobj, info))
4286 rel_end = relocs + sec->reloc_count;
4287 for (rel = relocs; rel < rel_end; rel++)
4289 unsigned long r_symndx;
4290 struct elf_link_hash_entry *h;
4291 enum elf_ppc64_reloc_type r_type;
4294 r_symndx = ELF64_R_SYM (rel->r_info);
4295 if (r_symndx < symtab_hdr->sh_info)
4298 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4300 r_type = ELF64_R_TYPE (rel->r_info);
4303 case R_PPC64_GOT_TLSLD16:
4304 case R_PPC64_GOT_TLSLD16_LO:
4305 case R_PPC64_GOT_TLSLD16_HI:
4306 case R_PPC64_GOT_TLSLD16_HA:
4307 ppc64_tlsld_got (abfd)->refcount += 1;
4308 tls_type = TLS_TLS | TLS_LD;
4311 case R_PPC64_GOT_TLSGD16:
4312 case R_PPC64_GOT_TLSGD16_LO:
4313 case R_PPC64_GOT_TLSGD16_HI:
4314 case R_PPC64_GOT_TLSGD16_HA:
4315 tls_type = TLS_TLS | TLS_GD;
4318 case R_PPC64_GOT_TPREL16_DS:
4319 case R_PPC64_GOT_TPREL16_LO_DS:
4320 case R_PPC64_GOT_TPREL16_HI:
4321 case R_PPC64_GOT_TPREL16_HA:
4323 info->flags |= DF_STATIC_TLS;
4324 tls_type = TLS_TLS | TLS_TPREL;
4327 case R_PPC64_GOT_DTPREL16_DS:
4328 case R_PPC64_GOT_DTPREL16_LO_DS:
4329 case R_PPC64_GOT_DTPREL16_HI:
4330 case R_PPC64_GOT_DTPREL16_HA:
4331 tls_type = TLS_TLS | TLS_DTPREL;
4333 sec->has_tls_reloc = 1;
4337 case R_PPC64_GOT16_DS:
4338 case R_PPC64_GOT16_HA:
4339 case R_PPC64_GOT16_HI:
4340 case R_PPC64_GOT16_LO:
4341 case R_PPC64_GOT16_LO_DS:
4342 /* This symbol requires a global offset table entry. */
4343 sec->has_toc_reloc = 1;
4344 if (ppc64_elf_tdata (abfd)->got == NULL
4345 && !create_got_section (abfd, info))
4350 struct ppc_link_hash_entry *eh;
4351 struct got_entry *ent;
4353 eh = (struct ppc_link_hash_entry *) h;
4354 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4355 if (ent->addend == rel->r_addend
4356 && ent->owner == abfd
4357 && ent->tls_type == tls_type)
4361 bfd_size_type amt = sizeof (*ent);
4362 ent = bfd_alloc (abfd, amt);
4365 ent->next = eh->elf.got.glist;
4366 ent->addend = rel->r_addend;
4368 ent->tls_type = tls_type;
4369 ent->got.refcount = 0;
4370 eh->elf.got.glist = ent;
4372 ent->got.refcount += 1;
4373 eh->tls_mask |= tls_type;
4376 /* This is a global offset table entry for a local symbol. */
4377 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4378 rel->r_addend, tls_type))
4382 case R_PPC64_PLT16_HA:
4383 case R_PPC64_PLT16_HI:
4384 case R_PPC64_PLT16_LO:
4387 /* This symbol requires a procedure linkage table entry. We
4388 actually build the entry in adjust_dynamic_symbol,
4389 because this might be a case of linking PIC code without
4390 linking in any dynamic objects, in which case we don't
4391 need to generate a procedure linkage table after all. */
4394 /* It does not make sense to have a procedure linkage
4395 table entry for a local symbol. */
4396 bfd_set_error (bfd_error_bad_value);
4400 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4405 /* The following relocations don't need to propagate the
4406 relocation if linking a shared object since they are
4407 section relative. */
4408 case R_PPC64_SECTOFF:
4409 case R_PPC64_SECTOFF_LO:
4410 case R_PPC64_SECTOFF_HI:
4411 case R_PPC64_SECTOFF_HA:
4412 case R_PPC64_SECTOFF_DS:
4413 case R_PPC64_SECTOFF_LO_DS:
4414 case R_PPC64_DTPREL16:
4415 case R_PPC64_DTPREL16_LO:
4416 case R_PPC64_DTPREL16_HI:
4417 case R_PPC64_DTPREL16_HA:
4418 case R_PPC64_DTPREL16_DS:
4419 case R_PPC64_DTPREL16_LO_DS:
4420 case R_PPC64_DTPREL16_HIGHER:
4421 case R_PPC64_DTPREL16_HIGHERA:
4422 case R_PPC64_DTPREL16_HIGHEST:
4423 case R_PPC64_DTPREL16_HIGHESTA:
4428 case R_PPC64_TOC16_LO:
4429 case R_PPC64_TOC16_HI:
4430 case R_PPC64_TOC16_HA:
4431 case R_PPC64_TOC16_DS:
4432 case R_PPC64_TOC16_LO_DS:
4433 sec->has_toc_reloc = 1;
4436 /* This relocation describes the C++ object vtable hierarchy.
4437 Reconstruct it for later use during GC. */
4438 case R_PPC64_GNU_VTINHERIT:
4439 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4443 /* This relocation describes which C++ vtable entries are actually
4444 used. Record for later use during GC. */
4445 case R_PPC64_GNU_VTENTRY:
4446 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4451 case R_PPC64_REL14_BRTAKEN:
4452 case R_PPC64_REL14_BRNTAKEN:
4453 htab->has_14bit_branch = 1;
4459 /* We may need a .plt entry if the function this reloc
4460 refers to is in a shared lib. */
4461 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4464 if (h == &htab->tls_get_addr->elf
4465 || h == &htab->tls_get_addr_fd->elf)
4466 sec->has_tls_reloc = 1;
4467 else if (htab->tls_get_addr == NULL
4468 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
4469 && (h->root.root.string[15] == 0
4470 || h->root.root.string[15] == '@'))
4472 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4473 sec->has_tls_reloc = 1;
4475 else if (htab->tls_get_addr_fd == NULL
4476 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4477 && (h->root.root.string[14] == 0
4478 || h->root.root.string[14] == '@'))
4480 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4481 sec->has_tls_reloc = 1;
4486 case R_PPC64_TPREL64:
4487 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4489 info->flags |= DF_STATIC_TLS;
4492 case R_PPC64_DTPMOD64:
4493 if (rel + 1 < rel_end
4494 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4495 && rel[1].r_offset == rel->r_offset + 8)
4496 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4498 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4501 case R_PPC64_DTPREL64:
4502 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4504 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4505 && rel[-1].r_offset == rel->r_offset - 8)
4506 /* This is the second reloc of a dtpmod, dtprel pair.
4507 Don't mark with TLS_DTPREL. */
4511 sec->has_tls_reloc = 1;
4514 struct ppc_link_hash_entry *eh;
4515 eh = (struct ppc_link_hash_entry *) h;
4516 eh->tls_mask |= tls_type;
4519 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4520 rel->r_addend, tls_type))
4523 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4525 /* One extra to simplify get_tls_mask. */
4526 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4527 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4528 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4531 BFD_ASSERT (rel->r_offset % 8 == 0);
4532 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4534 /* Mark the second slot of a GD or LD entry.
4535 -1 to indicate GD and -2 to indicate LD. */
4536 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4537 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4538 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4539 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4542 case R_PPC64_TPREL16:
4543 case R_PPC64_TPREL16_LO:
4544 case R_PPC64_TPREL16_HI:
4545 case R_PPC64_TPREL16_HA:
4546 case R_PPC64_TPREL16_DS:
4547 case R_PPC64_TPREL16_LO_DS:
4548 case R_PPC64_TPREL16_HIGHER:
4549 case R_PPC64_TPREL16_HIGHERA:
4550 case R_PPC64_TPREL16_HIGHEST:
4551 case R_PPC64_TPREL16_HIGHESTA:
4554 info->flags |= DF_STATIC_TLS;
4559 case R_PPC64_ADDR64:
4560 if (opd_sym_map != NULL
4561 && rel + 1 < rel_end
4562 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4566 if (h->root.root.string[0] == '.'
4567 && h->root.root.string[1] != 0
4568 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4571 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4577 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4582 opd_sym_map[rel->r_offset / 8] = s;
4590 case R_PPC64_ADDR14:
4591 case R_PPC64_ADDR14_BRNTAKEN:
4592 case R_PPC64_ADDR14_BRTAKEN:
4593 case R_PPC64_ADDR16:
4594 case R_PPC64_ADDR16_DS:
4595 case R_PPC64_ADDR16_HA:
4596 case R_PPC64_ADDR16_HI:
4597 case R_PPC64_ADDR16_HIGHER:
4598 case R_PPC64_ADDR16_HIGHERA:
4599 case R_PPC64_ADDR16_HIGHEST:
4600 case R_PPC64_ADDR16_HIGHESTA:
4601 case R_PPC64_ADDR16_LO:
4602 case R_PPC64_ADDR16_LO_DS:
4603 case R_PPC64_ADDR24:
4604 case R_PPC64_ADDR32:
4605 case R_PPC64_UADDR16:
4606 case R_PPC64_UADDR32:
4607 case R_PPC64_UADDR64:
4609 if (h != NULL && !info->shared)
4610 /* We may need a copy reloc. */
4613 /* Don't propagate .opd relocs. */
4614 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4617 /* If we are creating a shared library, and this is a reloc
4618 against a global symbol, or a non PC relative reloc
4619 against a local symbol, then we need to copy the reloc
4620 into the shared library. However, if we are linking with
4621 -Bsymbolic, we do not need to copy a reloc against a
4622 global symbol which is defined in an object we are
4623 including in the link (i.e., DEF_REGULAR is set). At
4624 this point we have not seen all the input files, so it is
4625 possible that DEF_REGULAR is not set now but will be set
4626 later (it is never cleared). In case of a weak definition,
4627 DEF_REGULAR may be cleared later by a strong definition in
4628 a shared library. We account for that possibility below by
4629 storing information in the dyn_relocs field of the hash
4630 table entry. A similar situation occurs when creating
4631 shared libraries and symbol visibility changes render the
4634 If on the other hand, we are creating an executable, we
4635 may need to keep relocations for symbols satisfied by a
4636 dynamic library if we manage to avoid copy relocs for the
4640 && (MUST_BE_DYN_RELOC (r_type)
4642 && (! info->symbolic
4643 || h->root.type == bfd_link_hash_defweak
4644 || !h->def_regular))))
4645 || (ELIMINATE_COPY_RELOCS
4648 && (h->root.type == bfd_link_hash_defweak
4649 || !h->def_regular)))
4651 struct ppc_dyn_relocs *p;
4652 struct ppc_dyn_relocs **head;
4654 /* We must copy these reloc types into the output file.
4655 Create a reloc section in dynobj and make room for
4662 name = (bfd_elf_string_from_elf_section
4664 elf_elfheader (abfd)->e_shstrndx,
4665 elf_section_data (sec)->rel_hdr.sh_name));
4669 if (strncmp (name, ".rela", 5) != 0
4670 || strcmp (bfd_get_section_name (abfd, sec),
4673 (*_bfd_error_handler)
4674 (_("%B: bad relocation section name `%s\'"),
4676 bfd_set_error (bfd_error_bad_value);
4679 dynobj = htab->elf.dynobj;
4680 sreloc = bfd_get_section_by_name (dynobj, name);
4685 sreloc = bfd_make_section (dynobj, name);
4686 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4687 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4688 if ((sec->flags & SEC_ALLOC) != 0)
4689 flags |= SEC_ALLOC | SEC_LOAD;
4691 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4692 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4695 elf_section_data (sec)->sreloc = sreloc;
4698 /* If this is a global symbol, we count the number of
4699 relocations we need for this symbol. */
4702 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4706 /* Track dynamic relocs needed for local syms too.
4707 We really need local syms available to do this
4711 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4716 head = ((struct ppc_dyn_relocs **)
4717 &elf_section_data (s)->local_dynrel);
4721 if (p == NULL || p->sec != sec)
4723 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4734 if (!MUST_BE_DYN_RELOC (r_type))
4747 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4748 of the code entry point, and its section. */
4751 opd_entry_value (asection *opd_sec,
4753 asection **code_sec,
4756 bfd *opd_bfd = opd_sec->owner;
4757 Elf_Internal_Rela *relocs;
4758 Elf_Internal_Rela *lo, *hi, *look;
4761 /* No relocs implies we are linking a --just-symbols object. */
4762 if (opd_sec->reloc_count == 0)
4766 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4767 return (bfd_vma) -1;
4769 if (code_sec != NULL)
4771 asection *sec, *likely = NULL;
4772 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4774 && (sec->flags & SEC_LOAD) != 0
4775 && (sec->flags & SEC_ALLOC) != 0)
4780 if (code_off != NULL)
4781 *code_off = val - likely->vma;
4787 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4789 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4791 /* Go find the opd reloc at the sym address. */
4793 BFD_ASSERT (lo != NULL);
4794 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4798 look = lo + (hi - lo) / 2;
4799 if (look->r_offset < offset)
4801 else if (look->r_offset > offset)
4805 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4806 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4807 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4809 unsigned long symndx = ELF64_R_SYM (look->r_info);
4812 if (symndx < symtab_hdr->sh_info)
4814 Elf_Internal_Sym *sym;
4816 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4819 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4820 symtab_hdr->sh_info,
4821 0, NULL, NULL, NULL);
4824 symtab_hdr->contents = (bfd_byte *) sym;
4828 val = sym->st_value;
4830 if ((sym->st_shndx != SHN_UNDEF
4831 && sym->st_shndx < SHN_LORESERVE)
4832 || sym->st_shndx > SHN_HIRESERVE)
4833 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4834 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4838 struct elf_link_hash_entry **sym_hashes;
4839 struct elf_link_hash_entry *rh;
4841 sym_hashes = elf_sym_hashes (opd_bfd);
4842 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4843 while (rh->root.type == bfd_link_hash_indirect
4844 || rh->root.type == bfd_link_hash_warning)
4845 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4846 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4847 || rh->root.type == bfd_link_hash_defweak);
4848 val = rh->root.u.def.value;
4849 sec = rh->root.u.def.section;
4851 val += look->r_addend;
4852 if (code_off != NULL)
4854 if (code_sec != NULL)
4856 if (sec != NULL && sec->output_section != NULL)
4857 val += sec->output_section->vma + sec->output_offset;
4866 /* Return the section that should be marked against GC for a given
4870 ppc64_elf_gc_mark_hook (asection *sec,
4871 struct bfd_link_info *info,
4872 Elf_Internal_Rela *rel,
4873 struct elf_link_hash_entry *h,
4874 Elf_Internal_Sym *sym)
4878 /* First mark all our entry sym sections. */
4879 if (info->gc_sym_list != NULL)
4881 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4882 struct bfd_sym_chain *sym = info->gc_sym_list;
4884 info->gc_sym_list = NULL;
4887 struct ppc_link_hash_entry *eh;
4889 eh = (struct ppc_link_hash_entry *)
4890 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4893 if (eh->elf.root.type != bfd_link_hash_defined
4894 && eh->elf.root.type != bfd_link_hash_defweak)
4897 if (eh->is_func_descriptor
4898 && (eh->oh->elf.root.type == bfd_link_hash_defined
4899 || eh->oh->elf.root.type == bfd_link_hash_defweak))
4900 rsec = eh->oh->elf.root.u.def.section;
4901 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4902 && opd_entry_value (eh->elf.root.u.def.section,
4903 eh->elf.root.u.def.value,
4904 &rsec, NULL) != (bfd_vma) -1)
4910 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4912 rsec = eh->elf.root.u.def.section;
4914 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4918 while (sym != NULL);
4921 /* Syms return NULL if we're marking .opd, so we avoid marking all
4922 function sections, as all functions are referenced in .opd. */
4924 if (get_opd_info (sec) != NULL)
4929 enum elf_ppc64_reloc_type r_type;
4930 struct ppc_link_hash_entry *eh;
4932 r_type = ELF64_R_TYPE (rel->r_info);
4935 case R_PPC64_GNU_VTINHERIT:
4936 case R_PPC64_GNU_VTENTRY:
4940 switch (h->root.type)
4942 case bfd_link_hash_defined:
4943 case bfd_link_hash_defweak:
4944 eh = (struct ppc_link_hash_entry *) h;
4946 && eh->oh->is_func_descriptor
4947 && (eh->oh->elf.root.type == bfd_link_hash_defined
4948 || eh->oh->elf.root.type == bfd_link_hash_defweak))
4951 /* Function descriptor syms cause the associated
4952 function code sym section to be marked. */
4953 if (eh->is_func_descriptor
4954 && (eh->oh->elf.root.type == bfd_link_hash_defined
4955 || eh->oh->elf.root.type == bfd_link_hash_defweak))
4957 /* They also mark their opd section. */
4958 if (!eh->elf.root.u.def.section->gc_mark)
4959 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4960 ppc64_elf_gc_mark_hook);
4962 rsec = eh->oh->elf.root.u.def.section;
4964 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4965 && opd_entry_value (eh->elf.root.u.def.section,
4966 eh->elf.root.u.def.value,
4967 &rsec, NULL) != (bfd_vma) -1)
4969 if (!eh->elf.root.u.def.section->gc_mark)
4970 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4971 ppc64_elf_gc_mark_hook);
4974 rsec = h->root.u.def.section;
4977 case bfd_link_hash_common:
4978 rsec = h->root.u.c.p->section;
4988 asection **opd_sym_section;
4990 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4991 opd_sym_section = get_opd_info (rsec);
4992 if (opd_sym_section != NULL)
4995 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4997 rsec = opd_sym_section[sym->st_value / 8];
5004 /* Update the .got, .plt. and dynamic reloc reference counts for the
5005 section being removed. */
5008 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5009 asection *sec, const Elf_Internal_Rela *relocs)
5011 struct ppc_link_hash_table *htab;
5012 Elf_Internal_Shdr *symtab_hdr;
5013 struct elf_link_hash_entry **sym_hashes;
5014 struct got_entry **local_got_ents;
5015 const Elf_Internal_Rela *rel, *relend;
5017 if ((sec->flags & SEC_ALLOC) == 0)
5020 elf_section_data (sec)->local_dynrel = NULL;
5022 htab = ppc_hash_table (info);
5023 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5024 sym_hashes = elf_sym_hashes (abfd);
5025 local_got_ents = elf_local_got_ents (abfd);
5027 relend = relocs + sec->reloc_count;
5028 for (rel = relocs; rel < relend; rel++)
5030 unsigned long r_symndx;
5031 enum elf_ppc64_reloc_type r_type;
5032 struct elf_link_hash_entry *h = NULL;
5035 r_symndx = ELF64_R_SYM (rel->r_info);
5036 r_type = ELF64_R_TYPE (rel->r_info);
5037 if (r_symndx >= symtab_hdr->sh_info)
5039 struct ppc_link_hash_entry *eh;
5040 struct ppc_dyn_relocs **pp;
5041 struct ppc_dyn_relocs *p;
5043 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5044 while (h->root.type == bfd_link_hash_indirect
5045 || h->root.type == bfd_link_hash_warning)
5046 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5047 eh = (struct ppc_link_hash_entry *) h;
5049 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5052 /* Everything must go for SEC. */
5060 case R_PPC64_GOT_TLSLD16:
5061 case R_PPC64_GOT_TLSLD16_LO:
5062 case R_PPC64_GOT_TLSLD16_HI:
5063 case R_PPC64_GOT_TLSLD16_HA:
5064 ppc64_tlsld_got (abfd)->refcount -= 1;
5065 tls_type = TLS_TLS | TLS_LD;
5068 case R_PPC64_GOT_TLSGD16:
5069 case R_PPC64_GOT_TLSGD16_LO:
5070 case R_PPC64_GOT_TLSGD16_HI:
5071 case R_PPC64_GOT_TLSGD16_HA:
5072 tls_type = TLS_TLS | TLS_GD;
5075 case R_PPC64_GOT_TPREL16_DS:
5076 case R_PPC64_GOT_TPREL16_LO_DS:
5077 case R_PPC64_GOT_TPREL16_HI:
5078 case R_PPC64_GOT_TPREL16_HA:
5079 tls_type = TLS_TLS | TLS_TPREL;
5082 case R_PPC64_GOT_DTPREL16_DS:
5083 case R_PPC64_GOT_DTPREL16_LO_DS:
5084 case R_PPC64_GOT_DTPREL16_HI:
5085 case R_PPC64_GOT_DTPREL16_HA:
5086 tls_type = TLS_TLS | TLS_DTPREL;
5090 case R_PPC64_GOT16_DS:
5091 case R_PPC64_GOT16_HA:
5092 case R_PPC64_GOT16_HI:
5093 case R_PPC64_GOT16_LO:
5094 case R_PPC64_GOT16_LO_DS:
5097 struct got_entry *ent;
5102 ent = local_got_ents[r_symndx];
5104 for (; ent != NULL; ent = ent->next)
5105 if (ent->addend == rel->r_addend
5106 && ent->owner == abfd
5107 && ent->tls_type == tls_type)
5111 if (ent->got.refcount > 0)
5112 ent->got.refcount -= 1;
5116 case R_PPC64_PLT16_HA:
5117 case R_PPC64_PLT16_HI:
5118 case R_PPC64_PLT16_LO:
5122 case R_PPC64_REL14_BRNTAKEN:
5123 case R_PPC64_REL14_BRTAKEN:
5127 struct plt_entry *ent;
5129 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5130 if (ent->addend == rel->r_addend)
5134 if (ent->plt.refcount > 0)
5135 ent->plt.refcount -= 1;
5146 /* The maximum size of .sfpr. */
5147 #define SFPR_MAX (218*4)
5149 struct sfpr_def_parms
5151 const char name[12];
5152 unsigned char lo, hi;
5153 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5154 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5157 /* Auto-generate _save*, _rest* functions in .sfpr. */
5160 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5162 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5164 size_t len = strlen (parm->name);
5165 bfd_boolean writing = FALSE;
5168 memcpy (sym, parm->name, len);
5171 for (i = parm->lo; i <= parm->hi; i++)
5173 struct elf_link_hash_entry *h;
5175 sym[len + 0] = i / 10 + '0';
5176 sym[len + 1] = i % 10 + '0';
5177 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5181 h->root.type = bfd_link_hash_defined;
5182 h->root.u.def.section = htab->sfpr;
5183 h->root.u.def.value = htab->sfpr->size;
5186 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5188 if (htab->sfpr->contents == NULL)
5190 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5191 if (htab->sfpr->contents == NULL)
5197 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5199 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5201 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5202 htab->sfpr->size = p - htab->sfpr->contents;
5210 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5212 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5217 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5219 p = savegpr0 (abfd, p, r);
5220 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5222 bfd_put_32 (abfd, BLR, p);
5227 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5229 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5234 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5236 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5238 p = restgpr0 (abfd, p, r);
5239 bfd_put_32 (abfd, MTLR_R0, p);
5243 p = restgpr0 (abfd, p, 30);
5244 p = restgpr0 (abfd, p, 31);
5246 bfd_put_32 (abfd, BLR, p);
5251 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5253 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5258 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5260 p = savegpr1 (abfd, p, r);
5261 bfd_put_32 (abfd, BLR, p);
5266 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5268 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5273 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5275 p = restgpr1 (abfd, p, r);
5276 bfd_put_32 (abfd, BLR, p);
5281 savefpr (bfd *abfd, bfd_byte *p, int r)
5283 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5288 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5290 p = savefpr (abfd, p, r);
5291 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5293 bfd_put_32 (abfd, BLR, p);
5298 restfpr (bfd *abfd, bfd_byte *p, int r)
5300 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5305 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5307 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5309 p = restfpr (abfd, p, r);
5310 bfd_put_32 (abfd, MTLR_R0, p);
5314 p = restfpr (abfd, p, 30);
5315 p = restfpr (abfd, p, 31);
5317 bfd_put_32 (abfd, BLR, p);
5322 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5324 p = savefpr (abfd, p, r);
5325 bfd_put_32 (abfd, BLR, p);
5330 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5332 p = restfpr (abfd, p, r);
5333 bfd_put_32 (abfd, BLR, p);
5338 savevr (bfd *abfd, bfd_byte *p, int r)
5340 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5342 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5347 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5349 p = savevr (abfd, p, r);
5350 bfd_put_32 (abfd, BLR, p);
5355 restvr (bfd *abfd, bfd_byte *p, int r)
5357 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5359 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5364 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5366 p = restvr (abfd, p, r);
5367 bfd_put_32 (abfd, BLR, p);
5371 /* Called via elf_link_hash_traverse to transfer dynamic linking
5372 information on function code symbol entries to their corresponding
5373 function descriptor symbol entries. */
5376 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5378 struct bfd_link_info *info;
5379 struct ppc_link_hash_table *htab;
5380 struct plt_entry *ent;
5381 struct ppc_link_hash_entry *fh;
5382 struct ppc_link_hash_entry *fdh;
5383 bfd_boolean force_local;
5385 fh = (struct ppc_link_hash_entry *) h;
5386 if (fh->elf.root.type == bfd_link_hash_indirect)
5389 if (fh->elf.root.type == bfd_link_hash_warning)
5390 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5393 htab = ppc_hash_table (info);
5395 /* Resolve undefined references to dot-symbols as the value
5396 in the function descriptor, if we have one in a regular object.
5397 This is to satisfy cases like ".quad .foo". Calls to functions
5398 in dynamic objects are handled elsewhere. */
5399 if (fh->elf.root.type == bfd_link_hash_undefweak
5400 && fh->was_undefined
5401 && (fh->oh->elf.root.type == bfd_link_hash_defined
5402 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5403 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5404 && opd_entry_value (fh->oh->elf.root.u.def.section,
5405 fh->oh->elf.root.u.def.value,
5406 &fh->elf.root.u.def.section,
5407 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5409 fh->elf.root.type = fh->oh->elf.root.type;
5410 fh->elf.forced_local = 1;
5413 /* If this is a function code symbol, transfer dynamic linking
5414 information to the function descriptor symbol. */
5418 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5419 if (ent->plt.refcount > 0)
5422 || fh->elf.root.root.string[0] != '.'
5423 || fh->elf.root.root.string[1] == '\0')
5426 /* Find the corresponding function descriptor symbol. Create it
5427 as undefined if necessary. */
5429 fdh = get_fdh (fh, htab);
5431 while (fdh->elf.root.type == bfd_link_hash_indirect
5432 || fdh->elf.root.type == bfd_link_hash_warning)
5433 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5437 && (fh->elf.root.type == bfd_link_hash_undefined
5438 || fh->elf.root.type == bfd_link_hash_undefweak))
5440 fdh = make_fdh (info, fh);
5445 /* Fake function descriptors are made undefweak. If the function
5446 code symbol is strong undefined, make the fake sym the same. */
5450 && fdh->elf.root.type == bfd_link_hash_undefweak
5451 && fh->elf.root.type == bfd_link_hash_undefined)
5453 fdh->elf.root.type = bfd_link_hash_undefined;
5454 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5458 && !fdh->elf.forced_local
5460 || fdh->elf.def_dynamic
5461 || fdh->elf.ref_dynamic
5462 || (fdh->elf.root.type == bfd_link_hash_undefweak
5463 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5465 if (fdh->elf.dynindx == -1)
5466 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5468 fdh->elf.ref_regular |= fh->elf.ref_regular;
5469 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5470 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5471 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
5472 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5474 move_plt_plist (fh, fdh);
5475 fdh->elf.needs_plt = 1;
5477 fdh->is_func_descriptor = 1;
5482 /* Now that the info is on the function descriptor, clear the
5483 function code sym info. Any function code syms for which we
5484 don't have a definition in a regular file, we force local.
5485 This prevents a shared library from exporting syms that have
5486 been imported from another library. Function code syms that
5487 are really in the library we must leave global to prevent the
5488 linker dragging in a definition from a static library. */
5491 && (!fh->elf.def_regular
5493 || !fdh->elf.def_regular
5494 || fdh->elf.forced_local));
5495 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5500 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5501 this hook to a) provide some gcc support functions, and b) transfer
5502 dynamic linking information gathered so far on function code symbol
5503 entries, to their corresponding function descriptor symbol entries. */
5506 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5507 struct bfd_link_info *info)
5509 struct ppc_link_hash_table *htab;
5511 const struct sfpr_def_parms funcs[] =
5513 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5514 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5515 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5516 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5517 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5518 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5519 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5520 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5521 { "._savef", 14, 31, savefpr, savefpr1_tail },
5522 { "._restf", 14, 31, restfpr, restfpr1_tail },
5523 { "_savevr_", 20, 31, savevr, savevr_tail },
5524 { "_restvr_", 20, 31, restvr, restvr_tail }
5527 htab = ppc_hash_table (info);
5528 if (htab->sfpr == NULL)
5529 /* We don't have any relocs. */
5532 /* Provide any missing _save* and _rest* functions. */
5533 htab->sfpr->size = 0;
5534 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5535 if (!sfpr_define (info, &funcs[i]))
5538 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5540 if (htab->sfpr->size == 0)
5541 _bfd_strip_section_from_output (info, htab->sfpr);
5546 /* Adjust a symbol defined by a dynamic object and referenced by a
5547 regular object. The current definition is in some section of the
5548 dynamic object, but we're not including those sections. We have to
5549 change the definition to something the rest of the link can
5553 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5554 struct elf_link_hash_entry *h)
5556 struct ppc_link_hash_table *htab;
5558 unsigned int power_of_two;
5560 htab = ppc_hash_table (info);
5562 /* Deal with function syms. */
5563 if (h->type == STT_FUNC
5566 /* Clear procedure linkage table information for any symbol that
5567 won't need a .plt entry. */
5568 struct plt_entry *ent;
5569 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5570 if (ent->plt.refcount > 0)
5573 || SYMBOL_CALLS_LOCAL (info, h)
5574 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5575 && h->root.type == bfd_link_hash_undefweak))
5577 h->plt.plist = NULL;
5582 h->plt.plist = NULL;
5584 /* If this is a weak symbol, and there is a real definition, the
5585 processor independent code will have arranged for us to see the
5586 real definition first, and we can just use the same value. */
5587 if (h->u.weakdef != NULL)
5589 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5590 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5591 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5592 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5593 if (ELIMINATE_COPY_RELOCS)
5594 h->non_got_ref = h->u.weakdef->non_got_ref;
5598 /* If we are creating a shared library, we must presume that the
5599 only references to the symbol are via the global offset table.
5600 For such cases we need not do anything here; the relocations will
5601 be handled correctly by relocate_section. */
5605 /* If there are no references to this symbol that do not use the
5606 GOT, we don't need to generate a copy reloc. */
5607 if (!h->non_got_ref)
5610 if (ELIMINATE_COPY_RELOCS)
5612 struct ppc_link_hash_entry * eh;
5613 struct ppc_dyn_relocs *p;
5615 eh = (struct ppc_link_hash_entry *) h;
5616 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5618 s = p->sec->output_section;
5619 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5623 /* If we didn't find any dynamic relocs in read-only sections, then
5624 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5632 if (h->plt.plist != NULL)
5634 /* We should never get here, but unfortunately there are versions
5635 of gcc out there that improperly (for this ABI) put initialized
5636 function pointers, vtable refs and suchlike in read-only
5637 sections. Allow them to proceed, but warn that this might
5638 break at runtime. */
5639 (*_bfd_error_handler)
5640 (_("copy reloc against `%s' requires lazy plt linking; "
5641 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5642 h->root.root.string);
5645 /* This is a reference to a symbol defined by a dynamic object which
5646 is not a function. */
5648 /* We must allocate the symbol in our .dynbss section, which will
5649 become part of the .bss section of the executable. There will be
5650 an entry for this symbol in the .dynsym section. The dynamic
5651 object will contain position independent code, so all references
5652 from the dynamic object to this symbol will go through the global
5653 offset table. The dynamic linker will use the .dynsym entry to
5654 determine the address it must put in the global offset table, so
5655 both the dynamic object and the regular object will refer to the
5656 same memory location for the variable. */
5658 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5659 to copy the initial value out of the dynamic object and into the
5660 runtime process image. We need to remember the offset into the
5661 .rela.bss section we are going to use. */
5662 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5664 htab->relbss->size += sizeof (Elf64_External_Rela);
5668 /* We need to figure out the alignment required for this symbol. I
5669 have no idea how ELF linkers handle this. */
5670 power_of_two = bfd_log2 (h->size);
5671 if (power_of_two > 4)
5674 /* Apply the required alignment. */
5676 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5677 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5679 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5683 /* Define the symbol as being at this point in the section. */
5684 h->root.u.def.section = s;
5685 h->root.u.def.value = s->size;
5687 /* Increment the section size to make room for the symbol. */
5693 /* If given a function descriptor symbol, hide both the function code
5694 sym and the descriptor. */
5696 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5697 struct elf_link_hash_entry *h,
5698 bfd_boolean force_local)
5700 struct ppc_link_hash_entry *eh;
5701 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5703 eh = (struct ppc_link_hash_entry *) h;
5704 if (eh->is_func_descriptor)
5706 struct ppc_link_hash_entry *fh = eh->oh;
5711 struct ppc_link_hash_table *htab;
5714 /* We aren't supposed to use alloca in BFD because on
5715 systems which do not have alloca the version in libiberty
5716 calls xmalloc, which might cause the program to crash
5717 when it runs out of memory. This function doesn't have a
5718 return status, so there's no way to gracefully return an
5719 error. So cheat. We know that string[-1] can be safely
5720 accessed; It's either a string in an ELF string table,
5721 or allocated in an objalloc structure. */
5723 p = eh->elf.root.root.string - 1;
5726 htab = ppc_hash_table (info);
5727 fh = (struct ppc_link_hash_entry *)
5728 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5731 /* Unfortunately, if it so happens that the string we were
5732 looking for was allocated immediately before this string,
5733 then we overwrote the string terminator. That's the only
5734 reason the lookup should fail. */
5737 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5738 while (q >= eh->elf.root.root.string && *q == *p)
5740 if (q < eh->elf.root.root.string && *p == '.')
5741 fh = (struct ppc_link_hash_entry *)
5742 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5751 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5756 get_sym_h (struct elf_link_hash_entry **hp,
5757 Elf_Internal_Sym **symp,
5760 Elf_Internal_Sym **locsymsp,
5761 unsigned long r_symndx,
5764 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5766 if (r_symndx >= symtab_hdr->sh_info)
5768 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5769 struct elf_link_hash_entry *h;
5771 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5772 while (h->root.type == bfd_link_hash_indirect
5773 || h->root.type == bfd_link_hash_warning)
5774 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5782 if (symsecp != NULL)
5784 asection *symsec = NULL;
5785 if (h->root.type == bfd_link_hash_defined
5786 || h->root.type == bfd_link_hash_defweak)
5787 symsec = h->root.u.def.section;
5791 if (tls_maskp != NULL)
5793 struct ppc_link_hash_entry *eh;
5795 eh = (struct ppc_link_hash_entry *) h;
5796 *tls_maskp = &eh->tls_mask;
5801 Elf_Internal_Sym *sym;
5802 Elf_Internal_Sym *locsyms = *locsymsp;
5804 if (locsyms == NULL)
5806 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5807 if (locsyms == NULL)
5808 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5809 symtab_hdr->sh_info,
5810 0, NULL, NULL, NULL);
5811 if (locsyms == NULL)
5813 *locsymsp = locsyms;
5815 sym = locsyms + r_symndx;
5823 if (symsecp != NULL)
5825 asection *symsec = NULL;
5826 if ((sym->st_shndx != SHN_UNDEF
5827 && sym->st_shndx < SHN_LORESERVE)
5828 || sym->st_shndx > SHN_HIRESERVE)
5829 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5833 if (tls_maskp != NULL)
5835 struct got_entry **lgot_ents;
5839 lgot_ents = elf_local_got_ents (ibfd);
5840 if (lgot_ents != NULL)
5842 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5843 tls_mask = &lgot_masks[r_symndx];
5845 *tls_maskp = tls_mask;
5851 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5852 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5853 type suitable for optimization, and 1 otherwise. */
5856 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5857 Elf_Internal_Sym **locsymsp,
5858 const Elf_Internal_Rela *rel, bfd *ibfd)
5860 unsigned long r_symndx;
5862 struct elf_link_hash_entry *h;
5863 Elf_Internal_Sym *sym;
5867 r_symndx = ELF64_R_SYM (rel->r_info);
5868 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5871 if ((*tls_maskp != NULL && **tls_maskp != 0)
5873 || ppc64_elf_section_data (sec)->t_symndx == NULL)
5876 /* Look inside a TOC section too. */
5879 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5880 off = h->root.u.def.value;
5883 off = sym->st_value;
5884 off += rel->r_addend;
5885 BFD_ASSERT (off % 8 == 0);
5886 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
5887 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
5888 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5890 if (toc_symndx != NULL)
5891 *toc_symndx = r_symndx;
5893 || ((h->root.type == bfd_link_hash_defined
5894 || h->root.type == bfd_link_hash_defweak)
5895 && !h->def_dynamic))
5896 && (next_r == -1 || next_r == -2))
5901 /* Adjust all global syms defined in opd sections. In gcc generated
5902 code for the old ABI, these will already have been done. */
5905 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5907 struct ppc_link_hash_entry *eh;
5911 if (h->root.type == bfd_link_hash_indirect)
5914 if (h->root.type == bfd_link_hash_warning)
5915 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5917 if (h->root.type != bfd_link_hash_defined
5918 && h->root.type != bfd_link_hash_defweak)
5921 eh = (struct ppc_link_hash_entry *) h;
5922 if (eh->adjust_done)
5925 sym_sec = eh->elf.root.u.def.section;
5926 opd_adjust = get_opd_info (sym_sec);
5927 if (opd_adjust != NULL)
5929 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
5932 /* This entry has been deleted. */
5933 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5936 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5937 if (elf_discarded_section (dsec))
5939 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5943 eh->elf.root.u.def.value = 0;
5944 eh->elf.root.u.def.section = dsec;
5947 eh->elf.root.u.def.value += adjust;
5948 eh->adjust_done = 1;
5953 /* Remove unused Official Procedure Descriptor entries. Currently we
5954 only remove those associated with functions in discarded link-once
5955 sections, or weakly defined functions that have been overridden. It
5956 would be possible to remove many more entries for statically linked
5960 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
5961 bfd_boolean non_overlapping)
5964 bfd_boolean some_edited = FALSE;
5965 asection *need_pad = NULL;
5967 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5970 Elf_Internal_Rela *relstart, *rel, *relend;
5971 Elf_Internal_Shdr *symtab_hdr;
5972 Elf_Internal_Sym *local_syms;
5973 struct elf_link_hash_entry **sym_hashes;
5977 bfd_boolean need_edit, add_aux_fields;
5978 bfd_size_type cnt_16b = 0;
5980 sec = bfd_get_section_by_name (ibfd, ".opd");
5984 amt = sec->size * sizeof (long) / 8;
5985 opd_adjust = get_opd_info (sec);
5986 if (opd_adjust == NULL)
5988 /* check_relocs hasn't been called. Must be a ld -r link
5989 or --just-symbols object. */
5990 opd_adjust = bfd_zalloc (obfd, amt);
5991 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
5993 memset (opd_adjust, 0, amt);
5995 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
5998 if (sec->output_section == bfd_abs_section_ptr)
6001 /* Look through the section relocs. */
6002 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6006 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6007 sym_hashes = elf_sym_hashes (ibfd);
6009 /* Read the relocations. */
6010 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6012 if (relstart == NULL)
6015 /* First run through the relocs to check they are sane, and to
6016 determine whether we need to edit this opd section. */
6020 relend = relstart + sec->reloc_count;
6021 for (rel = relstart; rel < relend; )
6023 enum elf_ppc64_reloc_type r_type;
6024 unsigned long r_symndx;
6026 struct elf_link_hash_entry *h;
6027 Elf_Internal_Sym *sym;
6029 /* .opd contains a regular array of 16 or 24 byte entries. We're
6030 only interested in the reloc pointing to a function entry
6032 if (rel->r_offset != offset
6033 || rel + 1 >= relend
6034 || (rel + 1)->r_offset != offset + 8)
6036 /* If someone messes with .opd alignment then after a
6037 "ld -r" we might have padding in the middle of .opd.
6038 Also, there's nothing to prevent someone putting
6039 something silly in .opd with the assembler. No .opd
6040 optimization for them! */
6042 (*_bfd_error_handler)
6043 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6048 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6049 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6051 (*_bfd_error_handler)
6052 (_("%B: unexpected reloc type %u in .opd section"),
6058 r_symndx = ELF64_R_SYM (rel->r_info);
6059 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6063 if (sym_sec == NULL || sym_sec->owner == NULL)
6065 const char *sym_name;
6067 sym_name = h->root.root.string;
6069 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym);
6071 (*_bfd_error_handler)
6072 (_("%B: undefined sym `%s' in .opd section"),
6078 /* opd entries are always for functions defined in the
6079 current input bfd. If the symbol isn't defined in the
6080 input bfd, then we won't be using the function in this
6081 bfd; It must be defined in a linkonce section in another
6082 bfd, or is weak. It's also possible that we are
6083 discarding the function due to a linker script /DISCARD/,
6084 which we test for via the output_section. */
6085 if (sym_sec->owner != ibfd
6086 || sym_sec->output_section == bfd_abs_section_ptr)
6091 || (rel + 1 == relend && rel->r_offset == offset + 16))
6093 if (sec->size == offset + 24)
6098 if (rel == relend && sec->size == offset + 16)
6106 if (rel->r_offset == offset + 24)
6108 else if (rel->r_offset != offset + 16)
6110 else if (rel + 1 < relend
6111 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6112 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6117 else if (rel + 2 < relend
6118 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6119 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6128 add_aux_fields = non_overlapping && cnt_16b > 0;
6130 if (need_edit || add_aux_fields)
6132 Elf_Internal_Rela *write_rel;
6133 bfd_byte *rptr, *wptr;
6134 bfd_byte *new_contents = NULL;
6138 /* This seems a waste of time as input .opd sections are all
6139 zeros as generated by gcc, but I suppose there's no reason
6140 this will always be so. We might start putting something in
6141 the third word of .opd entries. */
6142 if ((sec->flags & SEC_IN_MEMORY) == 0)
6145 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6150 if (local_syms != NULL
6151 && symtab_hdr->contents != (unsigned char *) local_syms)
6153 if (elf_section_data (sec)->relocs != relstart)
6157 sec->contents = loc;
6158 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6161 elf_section_data (sec)->relocs = relstart;
6163 wptr = sec->contents;
6164 rptr = sec->contents;
6165 new_contents = sec->contents;
6169 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6170 if (new_contents == NULL)
6173 wptr = new_contents;
6176 write_rel = relstart;
6180 for (rel = relstart; rel < relend; rel++)
6182 unsigned long r_symndx;
6184 struct elf_link_hash_entry *h;
6185 Elf_Internal_Sym *sym;
6187 r_symndx = ELF64_R_SYM (rel->r_info);
6188 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6192 if (rel->r_offset == offset)
6194 struct ppc_link_hash_entry *fdh = NULL;
6196 /* See if the .opd entry is full 24 byte or
6197 16 byte (with fd_aux entry overlapped with next
6200 if ((rel + 2 == relend && sec->size == offset + 16)
6201 || (rel + 3 < relend
6202 && rel[2].r_offset == offset + 16
6203 && rel[3].r_offset == offset + 24
6204 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6205 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6209 && h->root.root.string[0] == '.')
6211 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6212 ppc_hash_table (info));
6214 && fdh->elf.root.type != bfd_link_hash_defined
6215 && fdh->elf.root.type != bfd_link_hash_defweak)
6219 skip = (sym_sec->owner != ibfd
6220 || sym_sec->output_section == bfd_abs_section_ptr);
6223 if (fdh != NULL && sym_sec->owner == ibfd)
6225 /* Arrange for the function descriptor sym
6227 fdh->elf.root.u.def.value = 0;
6228 fdh->elf.root.u.def.section = sym_sec;
6230 opd_adjust[rel->r_offset / 8] = -1;
6234 /* We'll be keeping this opd entry. */
6238 /* Redefine the function descriptor symbol to
6239 this location in the opd section. It is
6240 necessary to update the value here rather
6241 than using an array of adjustments as we do
6242 for local symbols, because various places
6243 in the generic ELF code use the value
6244 stored in u.def.value. */
6245 fdh->elf.root.u.def.value = wptr - new_contents;
6246 fdh->adjust_done = 1;
6249 /* Local syms are a bit tricky. We could
6250 tweak them as they can be cached, but
6251 we'd need to look through the local syms
6252 for the function descriptor sym which we
6253 don't have at the moment. So keep an
6254 array of adjustments. */
6255 opd_adjust[rel->r_offset / 8]
6256 = (wptr - new_contents) - (rptr - sec->contents);
6259 memcpy (wptr, rptr, opd_ent_size);
6260 wptr += opd_ent_size;
6261 if (add_aux_fields && opd_ent_size == 16)
6263 memset (wptr, '\0', 8);
6267 rptr += opd_ent_size;
6268 offset += opd_ent_size;
6273 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
6276 /* We won't be needing dynamic relocs here. */
6277 struct ppc_dyn_relocs **pp;
6278 struct ppc_dyn_relocs *p;
6281 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6282 else if (sym_sec != NULL)
6283 pp = ((struct ppc_dyn_relocs **)
6284 &elf_section_data (sym_sec)->local_dynrel);
6286 pp = ((struct ppc_dyn_relocs **)
6287 &elf_section_data (sec)->local_dynrel);
6288 while ((p = *pp) != NULL)
6303 /* We need to adjust any reloc offsets to point to the
6304 new opd entries. While we're at it, we may as well
6305 remove redundant relocs. */
6306 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6307 if (write_rel != rel)
6308 memcpy (write_rel, rel, sizeof (*rel));
6313 sec->size = wptr - new_contents;
6314 sec->reloc_count = write_rel - relstart;
6317 free (sec->contents);
6318 sec->contents = new_contents;
6321 /* Fudge the size too, as this is used later in
6322 elf_bfd_final_link if we are emitting relocs. */
6323 elf_section_data (sec)->rel_hdr.sh_size
6324 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6325 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6328 else if (elf_section_data (sec)->relocs != relstart)
6331 if (local_syms != NULL
6332 && symtab_hdr->contents != (unsigned char *) local_syms)
6334 if (!info->keep_memory)
6337 symtab_hdr->contents = (unsigned char *) local_syms;
6342 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6344 /* If we are doing a final link and the last .opd entry is just 16 byte
6345 long, add a 8 byte padding after it. */
6346 if (need_pad != NULL && !info->relocatable)
6350 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6352 BFD_ASSERT (need_pad->size > 0);
6354 p = bfd_malloc (need_pad->size + 8);
6358 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6359 p, 0, need_pad->size))
6362 need_pad->contents = p;
6363 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6367 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6371 need_pad->contents = p;
6374 memset (need_pad->contents + need_pad->size, 0, 8);
6375 need_pad->size += 8;
6381 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6384 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6386 struct ppc_link_hash_table *htab;
6388 htab = ppc_hash_table (info);
6389 if (htab->tls_get_addr != NULL)
6391 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6393 while (h->elf.root.type == bfd_link_hash_indirect
6394 || h->elf.root.type == bfd_link_hash_warning)
6395 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6397 htab->tls_get_addr = h;
6399 if (htab->tls_get_addr_fd == NULL
6401 && h->oh->is_func_descriptor
6402 && (h->oh->elf.root.type == bfd_link_hash_defined
6403 || h->oh->elf.root.type == bfd_link_hash_defweak))
6404 htab->tls_get_addr_fd = h->oh;
6407 if (htab->tls_get_addr_fd != NULL)
6409 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6411 while (h->elf.root.type == bfd_link_hash_indirect
6412 || h->elf.root.type == bfd_link_hash_warning)
6413 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6415 htab->tls_get_addr_fd = h;
6418 return _bfd_elf_tls_setup (obfd, info);
6421 /* Run through all the TLS relocs looking for optimization
6422 opportunities. The linker has been hacked (see ppc64elf.em) to do
6423 a preliminary section layout so that we know the TLS segment
6424 offsets. We can't optimize earlier because some optimizations need
6425 to know the tp offset, and we need to optimize before allocating
6426 dynamic relocations. */
6429 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6433 struct ppc_link_hash_table *htab;
6435 if (info->relocatable || info->shared)
6438 htab = ppc_hash_table (info);
6439 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6441 Elf_Internal_Sym *locsyms = NULL;
6443 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6444 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6446 Elf_Internal_Rela *relstart, *rel, *relend;
6447 int expecting_tls_get_addr;
6449 /* Read the relocations. */
6450 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6452 if (relstart == NULL)
6455 expecting_tls_get_addr = 0;
6456 relend = relstart + sec->reloc_count;
6457 for (rel = relstart; rel < relend; rel++)
6459 enum elf_ppc64_reloc_type r_type;
6460 unsigned long r_symndx;
6461 struct elf_link_hash_entry *h;
6462 Elf_Internal_Sym *sym;
6465 char tls_set, tls_clear, tls_type = 0;
6467 bfd_boolean ok_tprel, is_local;
6469 r_symndx = ELF64_R_SYM (rel->r_info);
6470 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6474 if (elf_section_data (sec)->relocs != relstart)
6477 && (elf_tdata (ibfd)->symtab_hdr.contents
6478 != (unsigned char *) locsyms))
6485 if (h->root.type != bfd_link_hash_defined
6486 && h->root.type != bfd_link_hash_defweak)
6488 value = h->root.u.def.value;
6491 /* Symbols referenced by TLS relocs must be of type
6492 STT_TLS. So no need for .opd local sym adjust. */
6493 value = sym->st_value;
6501 value += sym_sec->output_offset;
6502 value += sym_sec->output_section->vma;
6503 value -= htab->elf.tls_sec->vma;
6504 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6505 < (bfd_vma) 1 << 32);
6508 r_type = ELF64_R_TYPE (rel->r_info);
6511 case R_PPC64_GOT_TLSLD16:
6512 case R_PPC64_GOT_TLSLD16_LO:
6513 case R_PPC64_GOT_TLSLD16_HI:
6514 case R_PPC64_GOT_TLSLD16_HA:
6515 /* These relocs should never be against a symbol
6516 defined in a shared lib. Leave them alone if
6517 that turns out to be the case. */
6518 ppc64_tlsld_got (ibfd)->refcount -= 1;
6525 tls_type = TLS_TLS | TLS_LD;
6526 expecting_tls_get_addr = 1;
6529 case R_PPC64_GOT_TLSGD16:
6530 case R_PPC64_GOT_TLSGD16_LO:
6531 case R_PPC64_GOT_TLSGD16_HI:
6532 case R_PPC64_GOT_TLSGD16_HA:
6538 tls_set = TLS_TLS | TLS_TPRELGD;
6540 tls_type = TLS_TLS | TLS_GD;
6541 expecting_tls_get_addr = 1;
6544 case R_PPC64_GOT_TPREL16_DS:
6545 case R_PPC64_GOT_TPREL16_LO_DS:
6546 case R_PPC64_GOT_TPREL16_HI:
6547 case R_PPC64_GOT_TPREL16_HA:
6548 expecting_tls_get_addr = 0;
6553 tls_clear = TLS_TPREL;
6554 tls_type = TLS_TLS | TLS_TPREL;
6561 case R_PPC64_REL14_BRTAKEN:
6562 case R_PPC64_REL14_BRNTAKEN:
6565 && (h == &htab->tls_get_addr->elf
6566 || h == &htab->tls_get_addr_fd->elf))
6568 if (!expecting_tls_get_addr
6570 && ((ELF64_R_TYPE (rel[-1].r_info)
6572 || (ELF64_R_TYPE (rel[-1].r_info)
6573 == R_PPC64_TOC16_LO)))
6575 /* Check for toc tls entries. */
6579 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6583 if (toc_tls != NULL)
6584 expecting_tls_get_addr = retval > 1;
6587 if (expecting_tls_get_addr)
6589 struct plt_entry *ent;
6590 for (ent = h->plt.plist; ent; ent = ent->next)
6591 if (ent->addend == 0)
6593 if (ent->plt.refcount > 0)
6594 ent->plt.refcount -= 1;
6599 expecting_tls_get_addr = 0;
6602 case R_PPC64_TPREL64:
6603 expecting_tls_get_addr = 0;
6607 tls_set = TLS_EXPLICIT;
6608 tls_clear = TLS_TPREL;
6614 case R_PPC64_DTPMOD64:
6615 expecting_tls_get_addr = 0;
6616 if (rel + 1 < relend
6618 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6619 && rel[1].r_offset == rel->r_offset + 8)
6623 tls_set = TLS_EXPLICIT | TLS_GD;
6626 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6635 tls_set = TLS_EXPLICIT;
6641 expecting_tls_get_addr = 0;
6645 if ((tls_set & TLS_EXPLICIT) == 0)
6647 struct got_entry *ent;
6649 /* Adjust got entry for this reloc. */
6653 ent = elf_local_got_ents (ibfd)[r_symndx];
6655 for (; ent != NULL; ent = ent->next)
6656 if (ent->addend == rel->r_addend
6657 && ent->owner == ibfd
6658 && ent->tls_type == tls_type)
6665 /* We managed to get rid of a got entry. */
6666 if (ent->got.refcount > 0)
6667 ent->got.refcount -= 1;
6672 struct ppc_link_hash_entry * eh;
6673 struct ppc_dyn_relocs **pp;
6674 struct ppc_dyn_relocs *p;
6676 /* Adjust dynamic relocs. */
6677 eh = (struct ppc_link_hash_entry *) h;
6678 for (pp = &eh->dyn_relocs;
6683 /* If we got rid of a DTPMOD/DTPREL reloc
6684 pair then we'll lose one or two dyn
6686 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6695 *tls_mask |= tls_set;
6696 *tls_mask &= ~tls_clear;
6699 if (elf_section_data (sec)->relocs != relstart)
6704 && (elf_tdata (ibfd)->symtab_hdr.contents
6705 != (unsigned char *) locsyms))
6707 if (!info->keep_memory)
6710 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6716 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6717 the values of any global symbols in a toc section that has been
6718 edited. Globals in toc sections should be a rarity, so this function
6719 sets a flag if any are found in toc sections other than the one just
6720 edited, so that futher hash table traversals can be avoided. */
6722 struct adjust_toc_info
6725 unsigned long *skip;
6726 bfd_boolean global_toc_syms;
6730 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6732 struct ppc_link_hash_entry *eh;
6733 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6735 if (h->root.type == bfd_link_hash_indirect)
6738 if (h->root.type == bfd_link_hash_warning)
6739 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6741 if (h->root.type != bfd_link_hash_defined
6742 && h->root.type != bfd_link_hash_defweak)
6745 eh = (struct ppc_link_hash_entry *) h;
6746 if (eh->adjust_done)
6749 if (eh->elf.root.u.def.section == toc_inf->toc)
6751 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6752 if (skip != (unsigned long) -1)
6753 eh->elf.root.u.def.value -= skip;
6756 (*_bfd_error_handler)
6757 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6758 eh->elf.root.u.def.section = &bfd_abs_section;
6759 eh->elf.root.u.def.value = 0;
6761 eh->adjust_done = 1;
6763 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6764 toc_inf->global_toc_syms = TRUE;
6769 /* Examine all relocs referencing .toc sections in order to remove
6770 unused .toc entries. */
6773 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6776 struct adjust_toc_info toc_inf;
6778 toc_inf.global_toc_syms = TRUE;
6779 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6781 asection *toc, *sec;
6782 Elf_Internal_Shdr *symtab_hdr;
6783 Elf_Internal_Sym *local_syms;
6784 struct elf_link_hash_entry **sym_hashes;
6785 Elf_Internal_Rela *relstart, *rel, *wrel;
6786 unsigned long *skip, *drop;
6787 unsigned char *used;
6788 unsigned char *keep, last, some_unused;
6790 toc = bfd_get_section_by_name (ibfd, ".toc");
6792 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6793 || elf_discarded_section (toc))
6797 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6798 sym_hashes = elf_sym_hashes (ibfd);
6800 /* Look at sections dropped from the final link. */
6803 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6805 if (sec->reloc_count == 0
6806 || !elf_discarded_section (sec)
6807 || get_opd_info (sec)
6808 || (sec->flags & SEC_ALLOC) == 0
6809 || (sec->flags & SEC_DEBUGGING) != 0)
6812 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6813 if (relstart == NULL)
6816 /* Run through the relocs to see which toc entries might be
6818 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6820 enum elf_ppc64_reloc_type r_type;
6821 unsigned long r_symndx;
6823 struct elf_link_hash_entry *h;
6824 Elf_Internal_Sym *sym;
6827 r_type = ELF64_R_TYPE (rel->r_info);
6834 case R_PPC64_TOC16_LO:
6835 case R_PPC64_TOC16_HI:
6836 case R_PPC64_TOC16_HA:
6837 case R_PPC64_TOC16_DS:
6838 case R_PPC64_TOC16_LO_DS:
6842 r_symndx = ELF64_R_SYM (rel->r_info);
6843 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6851 val = h->root.u.def.value;
6853 val = sym->st_value;
6854 val += rel->r_addend;
6856 if (val >= toc->size)
6859 /* Anything in the toc ought to be aligned to 8 bytes.
6860 If not, don't mark as unused. */
6866 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
6874 if (elf_section_data (sec)->relocs != relstart)
6881 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
6885 if (local_syms != NULL
6886 && symtab_hdr->contents != (unsigned char *) local_syms)
6890 && elf_section_data (sec)->relocs != relstart)
6897 /* Now check all kept sections that might reference the toc. */
6898 for (sec = ibfd->sections;
6900 /* Check the toc itself last. */
6901 sec = (sec == toc ? NULL
6902 : sec->next == toc && sec->next->next ? sec->next->next
6903 : sec->next == NULL ? toc
6908 if (sec->reloc_count == 0
6909 || elf_discarded_section (sec)
6910 || get_opd_info (sec)
6911 || (sec->flags & SEC_ALLOC) == 0
6912 || (sec->flags & SEC_DEBUGGING) != 0)
6915 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
6916 if (relstart == NULL)
6919 /* Mark toc entries referenced as used. */
6922 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6924 enum elf_ppc64_reloc_type r_type;
6925 unsigned long r_symndx;
6927 struct elf_link_hash_entry *h;
6928 Elf_Internal_Sym *sym;
6931 r_type = ELF64_R_TYPE (rel->r_info);
6935 case R_PPC64_TOC16_LO:
6936 case R_PPC64_TOC16_HI:
6937 case R_PPC64_TOC16_HA:
6938 case R_PPC64_TOC16_DS:
6939 case R_PPC64_TOC16_LO_DS:
6940 /* In case we're taking addresses of toc entries. */
6941 case R_PPC64_ADDR64:
6948 r_symndx = ELF64_R_SYM (rel->r_info);
6949 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6960 val = h->root.u.def.value;
6962 val = sym->st_value;
6963 val += rel->r_addend;
6965 if (val >= toc->size)
6968 /* For the toc section, we only mark as used if
6969 this entry itself isn't unused. */
6972 && (used[rel->r_offset >> 3]
6973 || !skip[rel->r_offset >> 3]))
6974 /* Do all the relocs again, to catch reference
6983 /* Merge the used and skip arrays. Assume that TOC
6984 doublewords not appearing as either used or unused belong
6985 to to an entry more than one doubleword in size. */
6986 for (drop = skip, keep = used, last = 0, some_unused = 0;
6987 drop < skip + (toc->size + 7) / 8;
7008 bfd_byte *contents, *src;
7011 /* Shuffle the toc contents, and at the same time convert the
7012 skip array from booleans into offsets. */
7013 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7016 elf_section_data (toc)->this_hdr.contents = contents;
7018 for (src = contents, off = 0, drop = skip;
7019 src < contents + toc->size;
7024 *drop = (unsigned long) -1;
7030 memcpy (src - off, src, 8);
7033 toc->rawsize = toc->size;
7034 toc->size = src - contents - off;
7036 /* Read toc relocs. */
7037 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, TRUE);
7038 if (relstart == NULL)
7041 /* Remove unused toc relocs, and adjust those we keep. */
7043 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7044 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7046 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7047 wrel->r_info = rel->r_info;
7048 wrel->r_addend = rel->r_addend;
7051 toc->reloc_count = wrel - relstart;
7052 elf_section_data (toc)->rel_hdr.sh_size
7053 = toc->reloc_count * elf_section_data (toc)->rel_hdr.sh_entsize;
7054 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7056 /* Adjust addends for relocs against the toc section sym. */
7057 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7059 if (sec->reloc_count == 0
7060 || elf_discarded_section (sec))
7063 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7065 if (relstart == NULL)
7068 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7070 enum elf_ppc64_reloc_type r_type;
7071 unsigned long r_symndx;
7073 struct elf_link_hash_entry *h;
7074 Elf_Internal_Sym *sym;
7076 r_type = ELF64_R_TYPE (rel->r_info);
7083 case R_PPC64_TOC16_LO:
7084 case R_PPC64_TOC16_HI:
7085 case R_PPC64_TOC16_HA:
7086 case R_PPC64_TOC16_DS:
7087 case R_PPC64_TOC16_LO_DS:
7088 case R_PPC64_ADDR64:
7092 r_symndx = ELF64_R_SYM (rel->r_info);
7093 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7097 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7100 rel->r_addend -= skip[rel->r_addend >> 3];
7104 /* We shouldn't have local or global symbols defined in the TOC,
7105 but handle them anyway. */
7106 if (local_syms != NULL)
7108 Elf_Internal_Sym *sym;
7110 for (sym = local_syms;
7111 sym < local_syms + symtab_hdr->sh_info;
7113 if (sym->st_shndx != SHN_UNDEF
7114 && (sym->st_shndx < SHN_LORESERVE
7115 || sym->st_shndx > SHN_HIRESERVE)
7116 && sym->st_value != 0
7117 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7119 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7120 sym->st_value -= skip[sym->st_value >> 3];
7123 (*_bfd_error_handler)
7124 (_("%s defined in removed toc entry"),
7125 bfd_elf_sym_name (ibfd, symtab_hdr, sym));
7127 sym->st_shndx = SHN_ABS;
7129 symtab_hdr->contents = (unsigned char *) local_syms;
7133 /* Finally, adjust any global syms defined in the toc. */
7134 if (toc_inf.global_toc_syms)
7137 toc_inf.skip = skip;
7138 toc_inf.global_toc_syms = FALSE;
7139 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7144 if (local_syms != NULL
7145 && symtab_hdr->contents != (unsigned char *) local_syms)
7147 if (!info->keep_memory)
7150 symtab_hdr->contents = (unsigned char *) local_syms;
7158 /* Allocate space in .plt, .got and associated reloc sections for
7162 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7164 struct bfd_link_info *info;
7165 struct ppc_link_hash_table *htab;
7167 struct ppc_link_hash_entry *eh;
7168 struct ppc_dyn_relocs *p;
7169 struct got_entry *gent;
7171 if (h->root.type == bfd_link_hash_indirect)
7174 if (h->root.type == bfd_link_hash_warning)
7175 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7177 info = (struct bfd_link_info *) inf;
7178 htab = ppc_hash_table (info);
7180 if (htab->elf.dynamic_sections_created
7182 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
7184 struct plt_entry *pent;
7185 bfd_boolean doneone = FALSE;
7186 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7187 if (pent->plt.refcount > 0)
7189 /* If this is the first .plt entry, make room for the special
7193 s->size += PLT_INITIAL_ENTRY_SIZE;
7195 pent->plt.offset = s->size;
7197 /* Make room for this entry. */
7198 s->size += PLT_ENTRY_SIZE;
7200 /* Make room for the .glink code. */
7203 s->size += GLINK_CALL_STUB_SIZE;
7204 /* We need bigger stubs past index 32767. */
7205 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7209 /* We also need to make an entry in the .rela.plt section. */
7211 s->size += sizeof (Elf64_External_Rela);
7215 pent->plt.offset = (bfd_vma) -1;
7218 h->plt.plist = NULL;
7224 h->plt.plist = NULL;
7228 eh = (struct ppc_link_hash_entry *) h;
7229 /* Run through the TLS GD got entries first if we're changing them
7231 if ((eh->tls_mask & TLS_TPRELGD) != 0)
7232 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7233 if (gent->got.refcount > 0
7234 && (gent->tls_type & TLS_GD) != 0)
7236 /* This was a GD entry that has been converted to TPREL. If
7237 there happens to be a TPREL entry we can use that one. */
7238 struct got_entry *ent;
7239 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7240 if (ent->got.refcount > 0
7241 && (ent->tls_type & TLS_TPREL) != 0
7242 && ent->addend == gent->addend
7243 && ent->owner == gent->owner)
7245 gent->got.refcount = 0;
7249 /* If not, then we'll be using our own TPREL entry. */
7250 if (gent->got.refcount != 0)
7251 gent->tls_type = TLS_TLS | TLS_TPREL;
7254 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7255 if (gent->got.refcount > 0)
7259 /* Make sure this symbol is output as a dynamic symbol.
7260 Undefined weak syms won't yet be marked as dynamic,
7261 nor will all TLS symbols. */
7262 if (h->dynindx == -1
7263 && !h->forced_local)
7265 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7269 if ((gent->tls_type & TLS_LD) != 0
7272 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
7276 s = ppc64_elf_tdata (gent->owner)->got;
7277 gent->got.offset = s->size;
7279 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
7280 dyn = htab->elf.dynamic_sections_created;
7282 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7283 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7284 || h->root.type != bfd_link_hash_undefweak))
7285 ppc64_elf_tdata (gent->owner)->relgot->size
7286 += (gent->tls_type & eh->tls_mask & TLS_GD
7287 ? 2 * sizeof (Elf64_External_Rela)
7288 : sizeof (Elf64_External_Rela));
7291 gent->got.offset = (bfd_vma) -1;
7293 if (eh->dyn_relocs == NULL)
7296 /* In the shared -Bsymbolic case, discard space allocated for
7297 dynamic pc-relative relocs against symbols which turn out to be
7298 defined in regular objects. For the normal shared case, discard
7299 space for relocs that have become local due to symbol visibility
7304 /* Relocs that use pc_count are those that appear on a call insn,
7305 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7306 generated via assembly. We want calls to protected symbols to
7307 resolve directly to the function rather than going via the plt.
7308 If people want function pointer comparisons to work as expected
7309 then they should avoid writing weird assembly. */
7310 if (SYMBOL_CALLS_LOCAL (info, h))
7312 struct ppc_dyn_relocs **pp;
7314 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
7316 p->count -= p->pc_count;
7325 /* Also discard relocs on undefined weak syms with non-default
7327 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7328 && h->root.type == bfd_link_hash_undefweak)
7329 eh->dyn_relocs = NULL;
7331 else if (ELIMINATE_COPY_RELOCS)
7333 /* For the non-shared case, discard space for relocs against
7334 symbols which turn out to need copy relocs or are not
7341 /* Make sure this symbol is output as a dynamic symbol.
7342 Undefined weak syms won't yet be marked as dynamic. */
7343 if (h->dynindx == -1
7344 && !h->forced_local)
7346 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7350 /* If that succeeded, we know we'll be keeping all the
7352 if (h->dynindx != -1)
7356 eh->dyn_relocs = NULL;
7361 /* Finally, allocate space. */
7362 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7364 asection *sreloc = elf_section_data (p->sec)->sreloc;
7365 sreloc->size += p->count * sizeof (Elf64_External_Rela);
7371 /* Find any dynamic relocs that apply to read-only sections. */
7374 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7376 struct ppc_link_hash_entry *eh;
7377 struct ppc_dyn_relocs *p;
7379 if (h->root.type == bfd_link_hash_warning)
7380 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7382 eh = (struct ppc_link_hash_entry *) h;
7383 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7385 asection *s = p->sec->output_section;
7387 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7389 struct bfd_link_info *info = inf;
7391 info->flags |= DF_TEXTREL;
7393 /* Not an error, just cut short the traversal. */
7400 /* Set the sizes of the dynamic sections. */
7403 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7404 struct bfd_link_info *info)
7406 struct ppc_link_hash_table *htab;
7412 htab = ppc_hash_table (info);
7413 dynobj = htab->elf.dynobj;
7417 if (htab->elf.dynamic_sections_created)
7419 /* Set the contents of the .interp section to the interpreter. */
7420 if (info->executable)
7422 s = bfd_get_section_by_name (dynobj, ".interp");
7425 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
7426 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7430 /* Set up .got offsets for local syms, and space for local dynamic
7432 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7434 struct got_entry **lgot_ents;
7435 struct got_entry **end_lgot_ents;
7437 bfd_size_type locsymcount;
7438 Elf_Internal_Shdr *symtab_hdr;
7441 if (!is_ppc64_elf_target (ibfd->xvec))
7444 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7446 s = ppc64_elf_tdata (ibfd)->got;
7447 ppc64_tlsld_got (ibfd)->offset = s->size;
7451 srel = ppc64_elf_tdata (ibfd)->relgot;
7452 srel->size += sizeof (Elf64_External_Rela);
7456 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7458 for (s = ibfd->sections; s != NULL; s = s->next)
7460 struct ppc_dyn_relocs *p;
7462 for (p = *((struct ppc_dyn_relocs **)
7463 &elf_section_data (s)->local_dynrel);
7467 if (!bfd_is_abs_section (p->sec)
7468 && bfd_is_abs_section (p->sec->output_section))
7470 /* Input section has been discarded, either because
7471 it is a copy of a linkonce section or due to
7472 linker script /DISCARD/, so we'll be discarding
7475 else if (p->count != 0)
7477 srel = elf_section_data (p->sec)->sreloc;
7478 srel->size += p->count * sizeof (Elf64_External_Rela);
7479 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7480 info->flags |= DF_TEXTREL;
7485 lgot_ents = elf_local_got_ents (ibfd);
7489 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7490 locsymcount = symtab_hdr->sh_info;
7491 end_lgot_ents = lgot_ents + locsymcount;
7492 lgot_masks = (char *) end_lgot_ents;
7493 s = ppc64_elf_tdata (ibfd)->got;
7494 srel = ppc64_elf_tdata (ibfd)->relgot;
7495 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
7497 struct got_entry *ent;
7499 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7500 if (ent->got.refcount > 0)
7502 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
7504 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
7506 ppc64_tlsld_got (ibfd)->offset = s->size;
7509 srel->size += sizeof (Elf64_External_Rela);
7511 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
7515 ent->got.offset = s->size;
7516 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
7520 srel->size += 2 * sizeof (Elf64_External_Rela);
7526 srel->size += sizeof (Elf64_External_Rela);
7531 ent->got.offset = (bfd_vma) -1;
7535 /* Allocate global sym .plt and .got entries, and space for global
7536 sym dynamic relocs. */
7537 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
7539 /* We now have determined the sizes of the various dynamic sections.
7540 Allocate memory for them. */
7542 for (s = dynobj->sections; s != NULL; s = s->next)
7544 if ((s->flags & SEC_LINKER_CREATED) == 0)
7547 if (s == htab->brlt || s == htab->relbrlt)
7548 /* These haven't been allocated yet; don't strip. */
7550 else if (s == htab->got
7552 || s == htab->glink)
7554 /* Strip this section if we don't need it; see the
7557 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
7561 /* If we don't need this section, strip it from the
7562 output file. This is mostly to handle .rela.bss and
7563 .rela.plt. We must create both sections in
7564 create_dynamic_sections, because they must be created
7565 before the linker maps input sections to output
7566 sections. The linker does that before
7567 adjust_dynamic_symbol is called, and it is that
7568 function which decides whether anything needs to go
7569 into these sections. */
7573 if (s != htab->relplt)
7576 /* We use the reloc_count field as a counter if we need
7577 to copy relocs into the output file. */
7583 /* It's not one of our sections, so don't allocate space. */
7589 _bfd_strip_section_from_output (info, s);
7593 /* .plt is in the bss section. We don't initialise it. */
7597 /* Allocate memory for the section contents. We use bfd_zalloc
7598 here in case unused entries are not reclaimed before the
7599 section's contents are written out. This should not happen,
7600 but this way if it does we get a R_PPC64_NONE reloc in .rela
7601 sections instead of garbage.
7602 We also rely on the section contents being zero when writing
7604 s->contents = bfd_zalloc (dynobj, s->size);
7605 if (s->contents == NULL)
7609 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7611 if (!is_ppc64_elf_target (ibfd->xvec))
7614 s = ppc64_elf_tdata (ibfd)->got;
7615 if (s != NULL && s != htab->got)
7618 _bfd_strip_section_from_output (info, s);
7621 s->contents = bfd_zalloc (ibfd, s->size);
7622 if (s->contents == NULL)
7626 s = ppc64_elf_tdata (ibfd)->relgot;
7630 _bfd_strip_section_from_output (info, s);
7633 s->contents = bfd_zalloc (ibfd, s->size);
7634 if (s->contents == NULL)
7642 if (htab->elf.dynamic_sections_created)
7644 /* Add some entries to the .dynamic section. We fill in the
7645 values later, in ppc64_elf_finish_dynamic_sections, but we
7646 must add the entries now so that we get the correct size for
7647 the .dynamic section. The DT_DEBUG entry is filled in by the
7648 dynamic linker and used by the debugger. */
7649 #define add_dynamic_entry(TAG, VAL) \
7650 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7652 if (info->executable)
7654 if (!add_dynamic_entry (DT_DEBUG, 0))
7658 if (htab->plt != NULL && htab->plt->size != 0)
7660 if (!add_dynamic_entry (DT_PLTGOT, 0)
7661 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7662 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
7663 || !add_dynamic_entry (DT_JMPREL, 0)
7664 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
7670 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7671 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
7677 if (!add_dynamic_entry (DT_RELA, 0)
7678 || !add_dynamic_entry (DT_RELASZ, 0)
7679 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
7682 /* If any dynamic relocs apply to a read-only section,
7683 then we need a DT_TEXTREL entry. */
7684 if ((info->flags & DF_TEXTREL) == 0)
7685 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
7687 if ((info->flags & DF_TEXTREL) != 0)
7689 if (!add_dynamic_entry (DT_TEXTREL, 0))
7694 #undef add_dynamic_entry
7699 /* Determine the type of stub needed, if any, for a call. */
7701 static inline enum ppc_stub_type
7702 ppc_type_of_stub (asection *input_sec,
7703 const Elf_Internal_Rela *rel,
7704 struct ppc_link_hash_entry **hash,
7705 bfd_vma destination)
7707 struct ppc_link_hash_entry *h = *hash;
7709 bfd_vma branch_offset;
7710 bfd_vma max_branch_offset;
7711 enum elf_ppc64_reloc_type r_type;
7716 && h->oh->is_func_descriptor)
7719 if (h->elf.dynindx != -1)
7721 struct plt_entry *ent;
7723 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
7724 if (ent->addend == rel->r_addend
7725 && ent->plt.offset != (bfd_vma) -1)
7728 return ppc_stub_plt_call;
7732 if (!(h->elf.root.type == bfd_link_hash_defined
7733 || h->elf.root.type == bfd_link_hash_defweak)
7734 || h->elf.root.u.def.section->output_section == NULL)
7735 return ppc_stub_none;
7738 /* Determine where the call point is. */
7739 location = (input_sec->output_offset
7740 + input_sec->output_section->vma
7743 branch_offset = destination - location;
7744 r_type = ELF64_R_TYPE (rel->r_info);
7746 /* Determine if a long branch stub is needed. */
7747 max_branch_offset = 1 << 25;
7748 if (r_type != R_PPC64_REL24)
7749 max_branch_offset = 1 << 15;
7751 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7752 /* We need a stub. Figure out whether a long_branch or plt_branch
7754 return ppc_stub_long_branch;
7756 return ppc_stub_none;
7759 /* Build a .plt call stub. */
7761 static inline bfd_byte *
7762 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
7764 #define PPC_LO(v) ((v) & 0xffff)
7765 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7766 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7768 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
7769 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
7770 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7771 if (PPC_HA (offset + 8) != PPC_HA (offset))
7772 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7774 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7775 if (PPC_HA (offset + 8) != PPC_HA (offset))
7776 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7778 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7779 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7780 bfd_put_32 (obfd, BCTR, p), p += 4;
7785 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7787 struct ppc_stub_hash_entry *stub_entry;
7788 struct ppc_branch_hash_entry *br_entry;
7789 struct bfd_link_info *info;
7790 struct ppc_link_hash_table *htab;
7794 struct plt_entry *ent;
7798 /* Massage our args to the form they really have. */
7799 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7802 htab = ppc_hash_table (info);
7804 /* Make a note of the offset within the stubs for this entry. */
7805 stub_entry->stub_offset = stub_entry->stub_sec->size;
7806 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
7808 htab->stub_count[stub_entry->stub_type - 1] += 1;
7809 switch (stub_entry->stub_type)
7811 case ppc_stub_long_branch:
7812 case ppc_stub_long_branch_r2off:
7813 /* Branches are relative. This is where we are going to. */
7814 off = dest = (stub_entry->target_value
7815 + stub_entry->target_section->output_offset
7816 + stub_entry->target_section->output_section->vma);
7818 /* And this is where we are coming from. */
7819 off -= (stub_entry->stub_offset
7820 + stub_entry->stub_sec->output_offset
7821 + stub_entry->stub_sec->output_section->vma);
7823 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7829 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7830 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7831 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7833 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7835 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7840 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
7842 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
7844 if (info->emitrelocations)
7846 Elf_Internal_Rela *relocs, *r;
7847 struct bfd_elf_section_data *elfsec_data;
7849 elfsec_data = elf_section_data (stub_entry->stub_sec);
7850 relocs = elfsec_data->relocs;
7853 bfd_size_type relsize;
7854 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
7855 relocs = bfd_alloc (htab->stub_bfd, relsize);
7858 elfsec_data->relocs = relocs;
7859 elfsec_data->rel_hdr.sh_size = relsize;
7860 elfsec_data->rel_hdr.sh_entsize = 24;
7861 stub_entry->stub_sec->reloc_count = 0;
7863 r = relocs + stub_entry->stub_sec->reloc_count;
7864 stub_entry->stub_sec->reloc_count += 1;
7865 r->r_offset = loc - stub_entry->stub_sec->contents;
7866 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
7868 if (stub_entry->h != NULL)
7870 struct elf_link_hash_entry **hashes;
7871 unsigned long symndx;
7872 struct ppc_link_hash_entry *h;
7874 hashes = elf_sym_hashes (htab->stub_bfd);
7877 bfd_size_type hsize;
7879 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
7880 hashes = bfd_zalloc (htab->stub_bfd, hsize);
7883 elf_sym_hashes (htab->stub_bfd) = hashes;
7884 htab->stub_globals = 1;
7886 symndx = htab->stub_globals++;
7888 hashes[symndx] = &h->elf;
7889 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
7890 if (h->oh != NULL && h->oh->is_func)
7892 if (h->elf.root.u.def.section != stub_entry->target_section)
7893 /* H is an opd symbol. The addend must be zero. */
7897 off = (h->elf.root.u.def.value
7898 + h->elf.root.u.def.section->output_offset
7899 + h->elf.root.u.def.section->output_section->vma);
7906 case ppc_stub_plt_branch:
7907 case ppc_stub_plt_branch_r2off:
7908 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7909 stub_entry->root.string + 9,
7911 if (br_entry == NULL)
7913 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
7914 stub_entry->root.string + 9);
7915 htab->stub_error = TRUE;
7919 off = (stub_entry->target_value
7920 + stub_entry->target_section->output_offset
7921 + stub_entry->target_section->output_section->vma);
7923 bfd_put_64 (htab->brlt->owner, off,
7924 htab->brlt->contents + br_entry->offset);
7926 if (htab->relbrlt != NULL)
7928 /* Create a reloc for the branch lookup table entry. */
7929 Elf_Internal_Rela rela;
7932 rela.r_offset = (br_entry->offset
7933 + htab->brlt->output_offset
7934 + htab->brlt->output_section->vma);
7935 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7936 rela.r_addend = off;
7938 rl = htab->relbrlt->contents;
7939 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
7940 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
7943 off = (br_entry->offset
7944 + htab->brlt->output_offset
7945 + htab->brlt->output_section->vma
7946 - elf_gp (htab->brlt->output_section->owner)
7947 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7949 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
7951 (*_bfd_error_handler)
7952 (_("linkage table error against `%s'"),
7953 stub_entry->root.string);
7954 bfd_set_error (bfd_error_bad_value);
7955 htab->stub_error = TRUE;
7960 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
7962 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7964 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7971 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7972 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7973 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7975 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7977 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7979 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7981 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7985 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
7987 bfd_put_32 (htab->stub_bfd, BCTR, loc);
7990 case ppc_stub_plt_call:
7991 /* Do the best we can for shared libraries built without
7992 exporting ".foo" for each "foo". This can happen when symbol
7993 versioning scripts strip all bar a subset of symbols. */
7994 if (stub_entry->h->oh != NULL
7995 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
7996 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
7998 /* Point the symbol at the stub. There may be multiple stubs,
7999 we don't really care; The main thing is to make this sym
8000 defined somewhere. Maybe defining the symbol in the stub
8001 section is a silly idea. If we didn't do this, htab->top_id
8003 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8004 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8005 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
8008 /* Now build the stub. */
8010 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8011 if (ent->addend == stub_entry->addend)
8013 off = ent->plt.offset;
8016 if (off >= (bfd_vma) -2)
8019 off &= ~ (bfd_vma) 1;
8020 off += (htab->plt->output_offset
8021 + htab->plt->output_section->vma
8022 - elf_gp (htab->plt->output_section->owner)
8023 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8025 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8027 (*_bfd_error_handler)
8028 (_("linkage table error against `%s'"),
8029 stub_entry->h->elf.root.root.string);
8030 bfd_set_error (bfd_error_bad_value);
8031 htab->stub_error = TRUE;
8035 p = build_plt_stub (htab->stub_bfd, loc, off);
8044 stub_entry->stub_sec->size += size;
8046 if (htab->emit_stub_syms)
8048 struct elf_link_hash_entry *h;
8051 const char *const stub_str[] = { "long_branch",
8052 "long_branch_r2off",
8057 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8058 len2 = strlen (stub_entry->root.string);
8059 name = bfd_malloc (len1 + len2 + 2);
8062 memcpy (name, stub_entry->root.string, 9);
8063 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8064 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8065 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
8068 if (h->root.type == bfd_link_hash_new)
8070 h->root.type = bfd_link_hash_defined;
8071 h->root.u.def.section = stub_entry->stub_sec;
8072 h->root.u.def.value = stub_entry->stub_offset;
8075 h->ref_regular_nonweak = 1;
8076 h->forced_local = 1;
8084 /* As above, but don't actually build the stub. Just bump offset so
8085 we know stub section sizes, and select plt_branch stubs where
8086 long_branch stubs won't do. */
8089 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8091 struct ppc_stub_hash_entry *stub_entry;
8092 struct bfd_link_info *info;
8093 struct ppc_link_hash_table *htab;
8097 /* Massage our args to the form they really have. */
8098 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8101 htab = ppc_hash_table (info);
8103 if (stub_entry->stub_type == ppc_stub_plt_call)
8105 struct plt_entry *ent;
8107 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8108 if (ent->addend == stub_entry->addend)
8110 off = ent->plt.offset & ~(bfd_vma) 1;
8113 if (off >= (bfd_vma) -2)
8115 off += (htab->plt->output_offset
8116 + htab->plt->output_section->vma
8117 - elf_gp (htab->plt->output_section->owner)
8118 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8120 size = PLT_CALL_STUB_SIZE;
8121 if (PPC_HA (off + 16) != PPC_HA (off))
8126 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8128 off = (stub_entry->target_value
8129 + stub_entry->target_section->output_offset
8130 + stub_entry->target_section->output_section->vma);
8131 off -= (stub_entry->stub_sec->size
8132 + stub_entry->stub_sec->output_offset
8133 + stub_entry->stub_sec->output_section->vma);
8135 /* Reset the stub type from the plt variant in case we now
8136 can reach with a shorter stub. */
8137 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8138 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8141 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8147 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8148 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8150 struct ppc_branch_hash_entry *br_entry;
8152 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8153 stub_entry->root.string + 9,
8155 if (br_entry == NULL)
8157 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8158 stub_entry->root.string + 9);
8159 htab->stub_error = TRUE;
8163 if (br_entry->iter != htab->stub_iteration)
8165 br_entry->iter = htab->stub_iteration;
8166 br_entry->offset = htab->brlt->size;
8167 htab->brlt->size += 8;
8169 if (htab->relbrlt != NULL)
8170 htab->relbrlt->size += sizeof (Elf64_External_Rela);
8173 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
8175 if (stub_entry->stub_type != ppc_stub_plt_branch)
8179 if (info->emitrelocations
8180 && (stub_entry->stub_type == ppc_stub_long_branch
8181 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8182 stub_entry->stub_sec->reloc_count += 1;
8185 stub_entry->stub_sec->size += size;
8189 /* Set up various things so that we can make a list of input sections
8190 for each output section included in the link. Returns -1 on error,
8191 0 when no stubs will be needed, and 1 on success. */
8194 ppc64_elf_setup_section_lists (bfd *output_bfd,
8195 struct bfd_link_info *info,
8199 int top_id, top_index, id;
8201 asection **input_list;
8203 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8205 htab->no_multi_toc = no_multi_toc;
8207 if (htab->brlt == NULL)
8210 /* Find the top input section id. */
8211 for (input_bfd = info->input_bfds, top_id = 3;
8213 input_bfd = input_bfd->link_next)
8215 for (section = input_bfd->sections;
8217 section = section->next)
8219 if (top_id < section->id)
8220 top_id = section->id;
8224 htab->top_id = top_id;
8225 amt = sizeof (struct map_stub) * (top_id + 1);
8226 htab->stub_group = bfd_zmalloc (amt);
8227 if (htab->stub_group == NULL)
8230 /* Set toc_off for com, und, abs and ind sections. */
8231 for (id = 0; id < 3; id++)
8232 htab->stub_group[id].toc_off = TOC_BASE_OFF;
8234 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
8236 /* We can't use output_bfd->section_count here to find the top output
8237 section index as some sections may have been removed, and
8238 _bfd_strip_section_from_output doesn't renumber the indices. */
8239 for (section = output_bfd->sections, top_index = 0;
8241 section = section->next)
8243 if (top_index < section->index)
8244 top_index = section->index;
8247 htab->top_index = top_index;
8248 amt = sizeof (asection *) * (top_index + 1);
8249 input_list = bfd_zmalloc (amt);
8250 htab->input_list = input_list;
8251 if (input_list == NULL)
8257 /* The linker repeatedly calls this function for each TOC input section
8258 and linker generated GOT section. Group input bfds such that the toc
8259 within a group is less than 64k in size. Will break with cute linker
8260 scripts that play games with dot in the output toc section. */
8263 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
8265 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8267 if (!htab->no_multi_toc)
8269 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8270 bfd_vma off = addr - htab->toc_curr;
8272 if (off + isec->size > 0x10000)
8273 htab->toc_curr = addr;
8275 elf_gp (isec->owner) = (htab->toc_curr
8276 - elf_gp (isec->output_section->owner)
8281 /* Called after the last call to the above function. */
8284 ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
8286 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8288 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8290 /* toc_curr tracks the TOC offset used for code sections below in
8291 ppc64_elf_next_input_section. Start off at 0x8000. */
8292 htab->toc_curr = TOC_BASE_OFF;
8295 /* No toc references were found in ISEC. If the code in ISEC makes no
8296 calls, then there's no need to use toc adjusting stubs when branching
8297 into ISEC. Actually, indirect calls from ISEC are OK as they will
8298 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8299 needed, and 2 if a cyclical call-graph was found but no other reason
8300 for a stub was detected. If called from the top level, a return of
8301 2 means the same as a return of 0. */
8304 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
8306 Elf_Internal_Rela *relstart, *rel;
8307 Elf_Internal_Sym *local_syms;
8309 struct ppc_link_hash_table *htab;
8311 /* We know none of our code bearing sections will need toc stubs. */
8312 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8315 if (isec->size == 0)
8318 if (isec->output_section == NULL)
8321 /* Hack for linux kernel. .fixup contains branches, but only back to
8322 the function that hit an exception. */
8323 if (strcmp (isec->name, ".fixup") == 0)
8326 if (isec->reloc_count == 0)
8329 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8331 if (relstart == NULL)
8334 /* Look for branches to outside of this section. */
8337 htab = ppc_hash_table (info);
8338 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
8340 enum elf_ppc64_reloc_type r_type;
8341 unsigned long r_symndx;
8342 struct elf_link_hash_entry *h;
8343 Elf_Internal_Sym *sym;
8349 r_type = ELF64_R_TYPE (rel->r_info);
8350 if (r_type != R_PPC64_REL24
8351 && r_type != R_PPC64_REL14
8352 && r_type != R_PPC64_REL14_BRTAKEN
8353 && r_type != R_PPC64_REL14_BRNTAKEN)
8356 r_symndx = ELF64_R_SYM (rel->r_info);
8357 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8364 /* Ignore branches to undefined syms. */
8365 if (sym_sec == NULL)
8368 /* Calls to dynamic lib functions go through a plt call stub
8369 that uses r2. Assume branches to other sections not included
8370 in the link need stubs too, to cover -R and absolute syms. */
8371 if (sym_sec->output_section == NULL)
8378 sym_value = sym->st_value;
8381 if (h->root.type != bfd_link_hash_defined
8382 && h->root.type != bfd_link_hash_defweak)
8384 sym_value = h->root.u.def.value;
8386 sym_value += rel->r_addend;
8388 /* If this branch reloc uses an opd sym, find the code section. */
8389 opd_adjust = get_opd_info (sym_sec);
8390 if (opd_adjust != NULL)
8397 adjust = opd_adjust[sym->st_value / 8];
8399 /* Assume deleted functions won't ever be called. */
8401 sym_value += adjust;
8404 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8405 if (dest == (bfd_vma) -1)
8410 + sym_sec->output_offset
8411 + sym_sec->output_section->vma);
8413 /* Ignore branch to self. */
8414 if (sym_sec == isec)
8417 /* If the called function uses the toc, we need a stub. */
8418 if (sym_sec->has_toc_reloc
8419 || sym_sec->makes_toc_func_call)
8425 /* Assume any branch that needs a long branch stub might in fact
8426 need a plt_branch stub. A plt_branch stub uses r2. */
8427 else if (dest - (isec->output_offset
8428 + isec->output_section->vma
8429 + rel->r_offset) + (1 << 25) >= (2 << 25))
8435 /* If calling back to a section in the process of being tested, we
8436 can't say for sure that no toc adjusting stubs are needed, so
8437 don't return zero. */
8438 else if (sym_sec->call_check_in_progress)
8441 /* Branches to another section that itself doesn't have any TOC
8442 references are OK. Recursively call ourselves to check. */
8443 else if (sym_sec->id <= htab->top_id
8444 && htab->stub_group[sym_sec->id].toc_off == 0)
8448 /* Mark current section as indeterminate, so that other
8449 sections that call back to current won't be marked as
8451 isec->call_check_in_progress = 1;
8452 recur = toc_adjusting_stub_needed (info, sym_sec);
8453 isec->call_check_in_progress = 0;
8457 /* An error. Exit. */
8461 else if (recur <= 1)
8463 /* Known result. Mark as checked and set section flag. */
8464 htab->stub_group[sym_sec->id].toc_off = 1;
8467 sym_sec->makes_toc_func_call = 1;
8474 /* Unknown result. Continue checking. */
8480 if (local_syms != NULL
8481 && (elf_tdata (isec->owner)->symtab_hdr.contents
8482 != (unsigned char *) local_syms))
8484 if (elf_section_data (isec)->relocs != relstart)
8490 /* The linker repeatedly calls this function for each input section,
8491 in the order that input sections are linked into output sections.
8492 Build lists of input sections to determine groupings between which
8493 we may insert linker stubs. */
8496 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
8498 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8500 if ((isec->output_section->flags & SEC_CODE) != 0
8501 && isec->output_section->index <= htab->top_index)
8503 asection **list = htab->input_list + isec->output_section->index;
8504 /* Steal the link_sec pointer for our list. */
8505 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8506 /* This happens to make the list in reverse order,
8507 which is what we want. */
8508 PREV_SEC (isec) = *list;
8512 if (htab->multi_toc_needed)
8514 /* If a code section has a function that uses the TOC then we need
8515 to use the right TOC (obviously). Also, make sure that .opd gets
8516 the correct TOC value for R_PPC64_TOC relocs that don't have or
8517 can't find their function symbol (shouldn't ever happen now). */
8518 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8520 if (elf_gp (isec->owner) != 0)
8521 htab->toc_curr = elf_gp (isec->owner);
8523 else if (htab->stub_group[isec->id].toc_off == 0)
8525 int ret = toc_adjusting_stub_needed (info, isec);
8529 isec->makes_toc_func_call = ret & 1;
8533 /* Functions that don't use the TOC can belong in any TOC group.
8534 Use the last TOC base. This happens to make _init and _fini
8536 htab->stub_group[isec->id].toc_off = htab->toc_curr;
8540 /* See whether we can group stub sections together. Grouping stub
8541 sections may result in fewer stubs. More importantly, we need to
8542 put all .init* and .fini* stubs at the beginning of the .init or
8543 .fini output sections respectively, because glibc splits the
8544 _init and _fini functions into multiple parts. Putting a stub in
8545 the middle of a function is not a good idea. */
8548 group_sections (struct ppc_link_hash_table *htab,
8549 bfd_size_type stub_group_size,
8550 bfd_boolean stubs_always_before_branch)
8552 asection **list = htab->input_list + htab->top_index;
8555 asection *tail = *list;
8556 while (tail != NULL)
8560 bfd_size_type total;
8561 bfd_boolean big_sec;
8566 big_sec = total >= stub_group_size;
8567 curr_toc = htab->stub_group[tail->id].toc_off;
8569 while ((prev = PREV_SEC (curr)) != NULL
8570 && ((total += curr->output_offset - prev->output_offset)
8572 && htab->stub_group[prev->id].toc_off == curr_toc)
8575 /* OK, the size from the start of CURR to the end is less
8576 than stub_group_size and thus can be handled by one stub
8577 section. (or the tail section is itself larger than
8578 stub_group_size, in which case we may be toast.) We
8579 should really be keeping track of the total size of stubs
8580 added here, as stubs contribute to the final output
8581 section size. That's a little tricky, and this way will
8582 only break if stubs added make the total size more than
8583 2^25, ie. for the default stub_group_size, if stubs total
8584 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8587 prev = PREV_SEC (tail);
8588 /* Set up this stub group. */
8589 htab->stub_group[tail->id].link_sec = curr;
8591 while (tail != curr && (tail = prev) != NULL);
8593 /* But wait, there's more! Input sections up to stub_group_size
8594 bytes before the stub section can be handled by it too.
8595 Don't do this if we have a really large section after the
8596 stubs, as adding more stubs increases the chance that
8597 branches may not reach into the stub section. */
8598 if (!stubs_always_before_branch && !big_sec)
8602 && ((total += tail->output_offset - prev->output_offset)
8604 && htab->stub_group[prev->id].toc_off == curr_toc)
8607 prev = PREV_SEC (tail);
8608 htab->stub_group[tail->id].link_sec = curr;
8614 while (list-- != htab->input_list);
8615 free (htab->input_list);
8619 /* Determine and set the size of the stub section for a final link.
8621 The basic idea here is to examine all the relocations looking for
8622 PC-relative calls to a target that is unreachable with a "bl"
8626 ppc64_elf_size_stubs (bfd *output_bfd,
8627 struct bfd_link_info *info,
8628 bfd_signed_vma group_size,
8629 asection *(*add_stub_section) (const char *, asection *),
8630 void (*layout_sections_again) (void))
8632 bfd_size_type stub_group_size;
8633 bfd_boolean stubs_always_before_branch;
8634 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8636 /* Stash our params away. */
8637 htab->add_stub_section = add_stub_section;
8638 htab->layout_sections_again = layout_sections_again;
8639 stubs_always_before_branch = group_size < 0;
8641 stub_group_size = -group_size;
8643 stub_group_size = group_size;
8644 if (stub_group_size == 1)
8646 /* Default values. */
8647 if (stubs_always_before_branch)
8649 stub_group_size = 0x1e00000;
8650 if (htab->has_14bit_branch)
8651 stub_group_size = 0x7800;
8655 stub_group_size = 0x1c00000;
8656 if (htab->has_14bit_branch)
8657 stub_group_size = 0x7000;
8661 group_sections (htab, stub_group_size, stubs_always_before_branch);
8666 unsigned int bfd_indx;
8668 bfd_boolean stub_changed;
8670 htab->stub_iteration += 1;
8671 stub_changed = FALSE;
8673 for (input_bfd = info->input_bfds, bfd_indx = 0;
8675 input_bfd = input_bfd->link_next, bfd_indx++)
8677 Elf_Internal_Shdr *symtab_hdr;
8679 Elf_Internal_Sym *local_syms = NULL;
8681 /* We'll need the symbol table in a second. */
8682 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8683 if (symtab_hdr->sh_info == 0)
8686 /* Walk over each section attached to the input bfd. */
8687 for (section = input_bfd->sections;
8689 section = section->next)
8691 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
8693 /* If there aren't any relocs, then there's nothing more
8695 if ((section->flags & SEC_RELOC) == 0
8696 || section->reloc_count == 0)
8699 /* If this section is a link-once section that will be
8700 discarded, then don't create any stubs. */
8701 if (section->output_section == NULL
8702 || section->output_section->owner != output_bfd)
8705 /* Get the relocs. */
8707 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
8709 if (internal_relocs == NULL)
8710 goto error_ret_free_local;
8712 /* Now examine each relocation. */
8713 irela = internal_relocs;
8714 irelaend = irela + section->reloc_count;
8715 for (; irela < irelaend; irela++)
8717 enum elf_ppc64_reloc_type r_type;
8718 unsigned int r_indx;
8719 enum ppc_stub_type stub_type;
8720 struct ppc_stub_hash_entry *stub_entry;
8721 asection *sym_sec, *code_sec;
8723 bfd_vma destination;
8724 bfd_boolean ok_dest;
8725 struct ppc_link_hash_entry *hash;
8726 struct ppc_link_hash_entry *fdh;
8727 struct elf_link_hash_entry *h;
8728 Elf_Internal_Sym *sym;
8730 const asection *id_sec;
8733 r_type = ELF64_R_TYPE (irela->r_info);
8734 r_indx = ELF64_R_SYM (irela->r_info);
8736 if (r_type >= R_PPC64_max)
8738 bfd_set_error (bfd_error_bad_value);
8739 goto error_ret_free_internal;
8742 /* Only look for stubs on branch instructions. */
8743 if (r_type != R_PPC64_REL24
8744 && r_type != R_PPC64_REL14
8745 && r_type != R_PPC64_REL14_BRTAKEN
8746 && r_type != R_PPC64_REL14_BRNTAKEN)
8749 /* Now determine the call target, its name, value,
8751 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8753 goto error_ret_free_internal;
8754 hash = (struct ppc_link_hash_entry *) h;
8760 sym_value = sym->st_value;
8766 /* Recognise an old ABI func code entry sym, and
8767 use the func descriptor sym instead. */
8768 if (hash->elf.root.type == bfd_link_hash_undefweak
8769 && hash->elf.root.root.string[0] == '.'
8770 && (fdh = get_fdh (hash, htab)) != NULL)
8772 if (fdh->elf.root.type == bfd_link_hash_defined
8773 || fdh->elf.root.type == bfd_link_hash_defweak)
8775 sym_sec = fdh->elf.root.u.def.section;
8776 sym_value = fdh->elf.root.u.def.value;
8777 if (sym_sec->output_section != NULL)
8783 else if (hash->elf.root.type == bfd_link_hash_defined
8784 || hash->elf.root.type == bfd_link_hash_defweak)
8786 sym_value = hash->elf.root.u.def.value;
8787 if (sym_sec->output_section != NULL)
8790 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8792 else if (hash->elf.root.type == bfd_link_hash_undefined)
8796 bfd_set_error (bfd_error_bad_value);
8797 goto error_ret_free_internal;
8804 sym_value += irela->r_addend;
8805 destination = (sym_value
8806 + sym_sec->output_offset
8807 + sym_sec->output_section->vma);
8811 opd_adjust = get_opd_info (sym_sec);
8812 if (opd_adjust != NULL)
8818 long adjust = opd_adjust[sym_value / 8];
8821 sym_value += adjust;
8823 dest = opd_entry_value (sym_sec, sym_value,
8824 &code_sec, &sym_value);
8825 if (dest != (bfd_vma) -1)
8830 /* Fixup old ABI sym to point at code
8832 hash->elf.root.type = bfd_link_hash_defweak;
8833 hash->elf.root.u.def.section = code_sec;
8834 hash->elf.root.u.def.value = sym_value;
8839 /* Determine what (if any) linker stub is needed. */
8840 stub_type = ppc_type_of_stub (section, irela, &hash,
8843 if (stub_type != ppc_stub_plt_call)
8845 /* Check whether we need a TOC adjusting stub.
8846 Since the linker pastes together pieces from
8847 different object files when creating the
8848 _init and _fini functions, it may be that a
8849 call to what looks like a local sym is in
8850 fact a call needing a TOC adjustment. */
8851 if (code_sec != NULL
8852 && code_sec->output_section != NULL
8853 && (htab->stub_group[code_sec->id].toc_off
8854 != htab->stub_group[section->id].toc_off)
8855 && (code_sec->has_toc_reloc
8856 || code_sec->makes_toc_func_call))
8857 stub_type = ppc_stub_long_branch_r2off;
8860 if (stub_type == ppc_stub_none)
8863 /* __tls_get_addr calls might be eliminated. */
8864 if (stub_type != ppc_stub_plt_call
8866 && (hash == htab->tls_get_addr
8867 || hash == htab->tls_get_addr_fd)
8868 && section->has_tls_reloc
8869 && irela != internal_relocs)
8874 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
8875 irela - 1, input_bfd))
8876 goto error_ret_free_internal;
8881 /* Support for grouping stub sections. */
8882 id_sec = htab->stub_group[section->id].link_sec;
8884 /* Get the name of this stub. */
8885 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
8887 goto error_ret_free_internal;
8889 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
8890 stub_name, FALSE, FALSE);
8891 if (stub_entry != NULL)
8893 /* The proper stub has already been created. */
8898 stub_entry = ppc_add_stub (stub_name, section, htab);
8899 if (stub_entry == NULL)
8902 error_ret_free_internal:
8903 if (elf_section_data (section)->relocs == NULL)
8904 free (internal_relocs);
8905 error_ret_free_local:
8906 if (local_syms != NULL
8907 && (symtab_hdr->contents
8908 != (unsigned char *) local_syms))
8913 stub_entry->stub_type = stub_type;
8914 stub_entry->target_value = sym_value;
8915 stub_entry->target_section = code_sec;
8916 stub_entry->h = hash;
8917 stub_entry->addend = irela->r_addend;
8919 if (stub_entry->h != NULL)
8920 htab->stub_globals += 1;
8922 stub_changed = TRUE;
8925 /* We're done with the internal relocs, free them. */
8926 if (elf_section_data (section)->relocs != internal_relocs)
8927 free (internal_relocs);
8930 if (local_syms != NULL
8931 && symtab_hdr->contents != (unsigned char *) local_syms)
8933 if (!info->keep_memory)
8936 symtab_hdr->contents = (unsigned char *) local_syms;
8943 /* OK, we've added some stubs. Find out the new size of the
8945 for (stub_sec = htab->stub_bfd->sections;
8947 stub_sec = stub_sec->next)
8948 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
8951 stub_sec->reloc_count = 0;
8954 htab->brlt->size = 0;
8955 if (htab->relbrlt != NULL)
8956 htab->relbrlt->size = 0;
8958 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
8960 /* Ask the linker to do its stuff. */
8961 (*htab->layout_sections_again) ();
8964 /* It would be nice to strip .branch_lt from the output if the
8965 section is empty, but it's too late. If we strip sections here,
8966 the dynamic symbol table is corrupted since the section symbol
8967 for the stripped section isn't written. */
8972 /* Called after we have determined section placement. If sections
8973 move, we'll be called again. Provide a value for TOCstart. */
8976 ppc64_elf_toc (bfd *obfd)
8981 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8982 order. The TOC starts where the first of these sections starts. */
8983 s = bfd_get_section_by_name (obfd, ".got");
8985 s = bfd_get_section_by_name (obfd, ".toc");
8987 s = bfd_get_section_by_name (obfd, ".tocbss");
8989 s = bfd_get_section_by_name (obfd, ".plt");
8992 /* This may happen for
8993 o references to TOC base (SYM@toc / TOC[tc0]) without a
8996 o --gc-sections and empty TOC sections
8998 FIXME: Warn user? */
9000 /* Look for a likely section. We probably won't even be
9002 for (s = obfd->sections; s != NULL; s = s->next)
9003 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9004 == (SEC_ALLOC | SEC_SMALL_DATA))
9007 for (s = obfd->sections; s != NULL; s = s->next)
9008 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9009 == (SEC_ALLOC | SEC_SMALL_DATA))
9012 for (s = obfd->sections; s != NULL; s = s->next)
9013 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9016 for (s = obfd->sections; s != NULL; s = s->next)
9017 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9023 TOCstart = s->output_section->vma + s->output_offset;
9028 /* Build all the stubs associated with the current output file.
9029 The stubs are kept in a hash table attached to the main linker
9030 hash table. This function is called via gldelf64ppc_finish. */
9033 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9034 struct bfd_link_info *info,
9037 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9040 int stub_sec_count = 0;
9042 htab->emit_stub_syms = emit_stub_syms;
9044 /* Allocate memory to hold the linker stubs. */
9045 for (stub_sec = htab->stub_bfd->sections;
9047 stub_sec = stub_sec->next)
9048 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9049 && stub_sec->size != 0)
9051 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9052 if (stub_sec->contents == NULL)
9054 /* We want to check that built size is the same as calculated
9055 size. rawsize is a convenient location to use. */
9056 stub_sec->rawsize = stub_sec->size;
9060 if (htab->plt != NULL)
9065 /* Build the .glink plt call stub. */
9066 plt0 = (htab->plt->output_section->vma
9067 + htab->plt->output_offset
9068 - (htab->glink->output_section->vma
9069 + htab->glink->output_offset
9070 + GLINK_CALL_STUB_SIZE));
9071 if (plt0 + 0x80008000 > 0xffffffff)
9073 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9074 bfd_set_error (bfd_error_bad_value);
9078 if (htab->emit_stub_syms)
9080 struct elf_link_hash_entry *h;
9081 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9084 if (h->root.type == bfd_link_hash_new)
9086 h->root.type = bfd_link_hash_defined;
9087 h->root.u.def.section = htab->glink;
9088 h->root.u.def.value = 0;
9091 h->ref_regular_nonweak = 1;
9092 h->forced_local = 1;
9096 p = htab->glink->contents;
9097 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
9099 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
9101 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
9103 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9105 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
9107 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
9109 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
9111 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9113 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
9115 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
9117 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
9119 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
9121 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
9123 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
9125 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
9127 bfd_put_32 (htab->glink->owner, BCTR, p);
9130 /* Build the .glink lazy link call stubs. */
9132 while (p < htab->glink->contents + htab->glink->size)
9136 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9141 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9143 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9146 bfd_put_32 (htab->glink->owner,
9147 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
9151 htab->glink->rawsize = p - htab->glink->contents;
9154 if (htab->brlt->size != 0)
9156 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
9158 if (htab->brlt->contents == NULL)
9161 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
9163 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
9164 htab->relbrlt->size);
9165 if (htab->relbrlt->contents == NULL)
9169 /* Build the stubs as directed by the stub hash table. */
9170 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
9172 for (stub_sec = htab->stub_bfd->sections;
9174 stub_sec = stub_sec->next)
9175 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9177 stub_sec_count += 1;
9178 if (stub_sec->rawsize != stub_sec->size)
9182 if (stub_sec != NULL
9183 || htab->glink->rawsize != htab->glink->size)
9185 htab->stub_error = TRUE;
9186 (*_bfd_error_handler) (_("stubs don't match calculated size"));
9189 if (htab->stub_error)
9194 *stats = bfd_malloc (500);
9198 sprintf (*stats, _("linker stubs in %u group%s\n"
9201 " long branch %lu\n"
9202 " long toc adj %lu\n"
9205 stub_sec_count == 1 ? "" : "s",
9206 htab->stub_count[ppc_stub_long_branch - 1],
9207 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9208 htab->stub_count[ppc_stub_plt_branch - 1],
9209 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9210 htab->stub_count[ppc_stub_plt_call - 1]);
9215 /* This function undoes the changes made by add_symbol_adjust. */
9218 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9220 struct ppc_link_hash_entry *eh;
9222 if (h->root.type == bfd_link_hash_indirect)
9225 if (h->root.type == bfd_link_hash_warning)
9226 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9228 eh = (struct ppc_link_hash_entry *) h;
9229 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9232 eh->elf.root.type = bfd_link_hash_undefined;
9237 ppc64_elf_restore_symbols (struct bfd_link_info *info)
9239 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9240 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9243 /* The RELOCATE_SECTION function is called by the ELF backend linker
9244 to handle the relocations for a section.
9246 The relocs are always passed as Rela structures; if the section
9247 actually uses Rel structures, the r_addend field will always be
9250 This function is responsible for adjust the section contents as
9251 necessary, and (if using Rela relocs and generating a
9252 relocatable output file) adjusting the reloc addend as
9255 This function does not have to worry about setting the reloc
9256 address or the reloc symbol index.
9258 LOCAL_SYMS is a pointer to the swapped in local symbols.
9260 LOCAL_SECTIONS is an array giving the section in the input file
9261 corresponding to the st_shndx field of each local symbol.
9263 The global hash table entry for the global symbols can be found
9264 via elf_sym_hashes (input_bfd).
9266 When generating relocatable output, this function must handle
9267 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9268 going to be the section symbol corresponding to the output
9269 section, which means that the addend must be adjusted
9273 ppc64_elf_relocate_section (bfd *output_bfd,
9274 struct bfd_link_info *info,
9276 asection *input_section,
9278 Elf_Internal_Rela *relocs,
9279 Elf_Internal_Sym *local_syms,
9280 asection **local_sections)
9282 struct ppc_link_hash_table *htab;
9283 Elf_Internal_Shdr *symtab_hdr;
9284 struct elf_link_hash_entry **sym_hashes;
9285 Elf_Internal_Rela *rel;
9286 Elf_Internal_Rela *relend;
9287 Elf_Internal_Rela outrel;
9289 struct got_entry **local_got_ents;
9291 bfd_boolean ret = TRUE;
9293 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9294 bfd_boolean is_power4 = FALSE;
9296 if (info->relocatable)
9299 /* Initialize howto table if needed. */
9300 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9303 htab = ppc_hash_table (info);
9305 /* Don't relocate stub sections. */
9306 if (input_section->owner == htab->stub_bfd)
9309 local_got_ents = elf_local_got_ents (input_bfd);
9310 TOCstart = elf_gp (output_bfd);
9311 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9312 sym_hashes = elf_sym_hashes (input_bfd);
9313 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
9316 relend = relocs + input_section->reloc_count;
9317 for (; rel < relend; rel++)
9319 enum elf_ppc64_reloc_type r_type;
9321 bfd_reloc_status_type r;
9322 Elf_Internal_Sym *sym;
9324 struct elf_link_hash_entry *h_elf;
9325 struct ppc_link_hash_entry *h;
9326 struct ppc_link_hash_entry *fdh;
9327 const char *sym_name;
9328 unsigned long r_symndx, toc_symndx;
9329 char tls_mask, tls_gd, tls_type;
9332 bfd_boolean unresolved_reloc;
9334 unsigned long insn, mask;
9335 struct ppc_stub_hash_entry *stub_entry;
9336 bfd_vma max_br_offset;
9339 r_type = ELF64_R_TYPE (rel->r_info);
9340 r_symndx = ELF64_R_SYM (rel->r_info);
9342 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9343 symbol of the previous ADDR64 reloc. The symbol gives us the
9344 proper TOC base to use. */
9345 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9347 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9349 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9355 unresolved_reloc = FALSE;
9358 if (r_symndx < symtab_hdr->sh_info)
9360 /* It's a local symbol. */
9363 sym = local_syms + r_symndx;
9364 sec = local_sections[r_symndx];
9365 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
9366 sym_type = ELF64_ST_TYPE (sym->st_info);
9367 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
9368 opd_adjust = get_opd_info (sec);
9369 if (opd_adjust != NULL)
9371 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
9375 relocation += adjust;
9380 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9381 r_symndx, symtab_hdr, sym_hashes,
9382 h_elf, sec, relocation,
9383 unresolved_reloc, warned);
9384 sym_name = h_elf->root.root.string;
9385 sym_type = h_elf->type;
9387 h = (struct ppc_link_hash_entry *) h_elf;
9389 /* TLS optimizations. Replace instruction sequences and relocs
9390 based on information we collected in tls_optimize. We edit
9391 RELOCS so that --emit-relocs will output something sensible
9392 for the final instruction stream. */
9396 if (IS_PPC64_TLS_RELOC (r_type))
9399 tls_mask = h->tls_mask;
9400 else if (local_got_ents != NULL)
9403 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9404 tls_mask = lgot_masks[r_symndx];
9406 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9408 /* Check for toc tls entries. */
9411 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9416 tls_mask = *toc_tls;
9420 /* Check that tls relocs are used with tls syms, and non-tls
9421 relocs are used with non-tls syms. */
9423 && r_type != R_PPC64_NONE
9425 || h->elf.root.type == bfd_link_hash_defined
9426 || h->elf.root.type == bfd_link_hash_defweak)
9427 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9429 if (r_type == R_PPC64_TLS && tls_mask != 0)
9430 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9433 (*_bfd_error_handler)
9434 (sym_type == STT_TLS
9435 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9436 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9439 (long) rel->r_offset,
9440 ppc64_elf_howto_table[r_type]->name,
9444 /* Ensure reloc mapping code below stays sane. */
9445 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9446 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9447 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9448 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9449 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9450 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9451 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9452 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9453 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9454 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9463 case R_PPC64_TOC16_LO:
9464 case R_PPC64_TOC16_DS:
9465 case R_PPC64_TOC16_LO_DS:
9467 /* Check for toc tls entries. */
9471 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9478 tls_mask = *toc_tls;
9479 if (r_type == R_PPC64_TOC16_DS
9480 || r_type == R_PPC64_TOC16_LO_DS)
9483 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9488 /* If we found a GD reloc pair, then we might be
9489 doing a GD->IE transition. */
9492 tls_gd = TLS_TPRELGD;
9493 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9494 goto tls_get_addr_check;
9496 else if (retval == 3)
9498 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9499 goto tls_get_addr_check;
9506 case R_PPC64_GOT_TPREL16_DS:
9507 case R_PPC64_GOT_TPREL16_LO_DS:
9509 && (tls_mask & TLS_TPREL) == 0)
9512 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9514 insn |= 0x3c0d0000; /* addis 0,13,0 */
9515 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9516 r_type = R_PPC64_TPREL16_HA;
9517 if (toc_symndx != 0)
9519 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9520 /* We changed the symbol. Start over in order to
9521 get h, sym, sec etc. right. */
9526 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9532 && (tls_mask & TLS_TPREL) == 0)
9535 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9536 if ((insn & ((0x3f << 26) | (31 << 11)))
9537 == ((31 << 26) | (13 << 11)))
9538 rtra = insn & ((1 << 26) - (1 << 16));
9539 else if ((insn & ((0x3f << 26) | (31 << 16)))
9540 == ((31 << 26) | (13 << 16)))
9541 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9544 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9547 else if ((insn & (31 << 1)) == 23 << 1
9548 && ((insn & (31 << 6)) < 14 << 6
9549 || ((insn & (31 << 6)) >= 16 << 6
9550 && (insn & (31 << 6)) < 24 << 6)))
9551 /* load and store indexed -> dform. */
9552 insn = (32 | ((insn >> 6) & 31)) << 26;
9553 else if ((insn & (31 << 1)) == 21 << 1
9554 && (insn & (0x1a << 6)) == 0)
9555 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9556 insn = (((58 | ((insn >> 6) & 4)) << 26)
9557 | ((insn >> 6) & 1));
9558 else if ((insn & (31 << 1)) == 21 << 1
9559 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9561 insn = (58 << 26) | 2;
9565 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9566 /* Was PPC64_TLS which sits on insn boundary, now
9567 PPC64_TPREL16_LO which is at insn+2. */
9569 r_type = R_PPC64_TPREL16_LO;
9570 if (toc_symndx != 0)
9572 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9573 /* We changed the symbol. Start over in order to
9574 get h, sym, sec etc. right. */
9579 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9583 case R_PPC64_GOT_TLSGD16_HI:
9584 case R_PPC64_GOT_TLSGD16_HA:
9585 tls_gd = TLS_TPRELGD;
9586 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9590 case R_PPC64_GOT_TLSLD16_HI:
9591 case R_PPC64_GOT_TLSLD16_HA:
9592 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9595 if ((tls_mask & tls_gd) != 0)
9596 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9597 + R_PPC64_GOT_TPREL16_DS);
9600 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9602 r_type = R_PPC64_NONE;
9604 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9608 case R_PPC64_GOT_TLSGD16:
9609 case R_PPC64_GOT_TLSGD16_LO:
9610 tls_gd = TLS_TPRELGD;
9611 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9612 goto tls_get_addr_check;
9615 case R_PPC64_GOT_TLSLD16:
9616 case R_PPC64_GOT_TLSLD16_LO:
9617 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9620 if (rel + 1 < relend)
9622 enum elf_ppc64_reloc_type r_type2;
9623 unsigned long r_symndx2;
9624 struct elf_link_hash_entry *h2;
9625 bfd_vma insn1, insn2, insn3;
9628 /* The next instruction should be a call to
9629 __tls_get_addr. Peek at the reloc to be sure. */
9630 r_type2 = ELF64_R_TYPE (rel[1].r_info);
9631 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9632 if (r_symndx2 < symtab_hdr->sh_info
9633 || (r_type2 != R_PPC64_REL14
9634 && r_type2 != R_PPC64_REL14_BRTAKEN
9635 && r_type2 != R_PPC64_REL14_BRNTAKEN
9636 && r_type2 != R_PPC64_REL24))
9639 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9640 while (h2->root.type == bfd_link_hash_indirect
9641 || h2->root.type == bfd_link_hash_warning)
9642 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
9643 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9644 && h2 != &htab->tls_get_addr_fd->elf))
9647 /* OK, it checks out. Replace the call. */
9648 offset = rel[1].r_offset;
9649 insn1 = bfd_get_32 (output_bfd,
9650 contents + rel->r_offset - 2);
9651 insn3 = bfd_get_32 (output_bfd,
9652 contents + offset + 4);
9653 if ((tls_mask & tls_gd) != 0)
9656 insn1 &= (1 << 26) - (1 << 2);
9657 insn1 |= 58 << 26; /* ld */
9658 insn2 = 0x7c636a14; /* add 3,3,13 */
9659 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9660 if ((tls_mask & TLS_EXPLICIT) == 0)
9661 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9662 + R_PPC64_GOT_TPREL16_DS);
9664 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9665 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9670 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9671 insn2 = 0x38630000; /* addi 3,3,0 */
9674 /* Was an LD reloc. */
9676 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9677 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9679 else if (toc_symndx != 0)
9680 r_symndx = toc_symndx;
9681 r_type = R_PPC64_TPREL16_HA;
9682 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9683 rel[1].r_info = ELF64_R_INFO (r_symndx,
9684 R_PPC64_TPREL16_LO);
9685 rel[1].r_offset += 2;
9688 || insn3 == CROR_151515 || insn3 == CROR_313131)
9692 rel[1].r_offset += 4;
9694 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9695 bfd_put_32 (output_bfd, insn2, contents + offset);
9696 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
9697 if (tls_gd == 0 || toc_symndx != 0)
9699 /* We changed the symbol. Start over in order
9700 to get h, sym, sec etc. right. */
9708 case R_PPC64_DTPMOD64:
9709 if (rel + 1 < relend
9710 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9711 && rel[1].r_offset == rel->r_offset + 8)
9713 if ((tls_mask & TLS_GD) == 0)
9715 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9716 if ((tls_mask & TLS_TPRELGD) != 0)
9717 r_type = R_PPC64_TPREL64;
9720 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9721 r_type = R_PPC64_NONE;
9723 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9728 if ((tls_mask & TLS_LD) == 0)
9730 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9731 r_type = R_PPC64_NONE;
9732 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9737 case R_PPC64_TPREL64:
9738 if ((tls_mask & TLS_TPREL) == 0)
9740 r_type = R_PPC64_NONE;
9741 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9746 /* Handle other relocations that tweak non-addend part of insn. */
9748 max_br_offset = 1 << 25;
9749 addend = rel->r_addend;
9755 /* Branch taken prediction relocations. */
9756 case R_PPC64_ADDR14_BRTAKEN:
9757 case R_PPC64_REL14_BRTAKEN:
9758 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9761 /* Branch not taken prediction relocations. */
9762 case R_PPC64_ADDR14_BRNTAKEN:
9763 case R_PPC64_REL14_BRNTAKEN:
9764 insn |= bfd_get_32 (output_bfd,
9765 contents + rel->r_offset) & ~(0x01 << 21);
9769 max_br_offset = 1 << 15;
9773 /* Calls to functions with a different TOC, such as calls to
9774 shared objects, need to alter the TOC pointer. This is
9775 done using a linkage stub. A REL24 branching to these
9776 linkage stubs needs to be followed by a nop, as the nop
9777 will be replaced with an instruction to restore the TOC
9782 && (((fdh = h->oh) != NULL
9783 && fdh->elf.plt.plist != NULL)
9784 || (fdh = h)->elf.plt.plist != NULL))
9786 && sec->output_section != NULL
9787 && sec->id <= htab->top_id
9788 && (htab->stub_group[sec->id].toc_off
9789 != htab->stub_group[input_section->id].toc_off)))
9790 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
9792 && (stub_entry->stub_type == ppc_stub_plt_call
9793 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9794 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
9796 bfd_boolean can_plt_call = FALSE;
9798 if (rel->r_offset + 8 <= input_section->size)
9801 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9803 || nop == CROR_151515 || nop == CROR_313131)
9805 bfd_put_32 (input_bfd, LD_R2_40R1,
9806 contents + rel->r_offset + 4);
9807 can_plt_call = TRUE;
9813 if (stub_entry->stub_type == ppc_stub_plt_call)
9815 /* If this is a plain branch rather than a branch
9816 and link, don't require a nop. */
9818 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9820 can_plt_call = TRUE;
9823 && strcmp (h->elf.root.root.string,
9824 ".__libc_start_main") == 0)
9826 /* Allow crt1 branch to go via a toc adjusting stub. */
9827 can_plt_call = TRUE;
9831 if (strcmp (input_section->output_section->name,
9833 || strcmp (input_section->output_section->name,
9835 (*_bfd_error_handler)
9836 (_("%B(%A+0x%lx): automatic multiple TOCs "
9837 "not supported using your crt files; "
9838 "recompile with -mminimal-toc or upgrade gcc"),
9841 (long) rel->r_offset);
9843 (*_bfd_error_handler)
9844 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9845 "does not allow automatic multiple TOCs; "
9846 "recompile with -mminimal-toc or "
9847 "-fno-optimize-sibling-calls, "
9848 "or make `%s' extern"),
9851 (long) rel->r_offset,
9854 bfd_set_error (bfd_error_bad_value);
9860 && stub_entry->stub_type == ppc_stub_plt_call)
9861 unresolved_reloc = FALSE;
9864 if (stub_entry == NULL
9865 && get_opd_info (sec) != NULL)
9867 /* The branch destination is the value of the opd entry. */
9868 bfd_vma off = (relocation - sec->output_section->vma
9869 - sec->output_offset + rel->r_addend);
9870 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9871 if (dest != (bfd_vma) -1)
9878 /* If the branch is out of reach we ought to have a long
9880 from = (rel->r_offset
9881 + input_section->output_offset
9882 + input_section->output_section->vma);
9884 if (stub_entry == NULL
9885 && (relocation + rel->r_addend - from + max_br_offset
9886 >= 2 * max_br_offset)
9887 && r_type != R_PPC64_ADDR14_BRTAKEN
9888 && r_type != R_PPC64_ADDR14_BRNTAKEN)
9889 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
9892 if (stub_entry != NULL)
9894 /* Munge up the value and addend so that we call the stub
9895 rather than the procedure directly. */
9896 relocation = (stub_entry->stub_offset
9897 + stub_entry->stub_sec->output_offset
9898 + stub_entry->stub_sec->output_section->vma);
9906 /* Set 'a' bit. This is 0b00010 in BO field for branch
9907 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9908 for branch on CTR insns (BO == 1a00t or 1a01t). */
9909 if ((insn & (0x14 << 21)) == (0x04 << 21))
9911 else if ((insn & (0x14 << 21)) == (0x10 << 21))
9918 /* Invert 'y' bit if not the default. */
9919 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
9923 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9926 /* NOP out calls to undefined weak functions.
9927 We can thus call a weak function without first
9928 checking whether the function is defined. */
9930 && h->elf.root.type == bfd_link_hash_undefweak
9931 && r_type == R_PPC64_REL24
9933 && rel->r_addend == 0)
9935 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9946 (*_bfd_error_handler)
9947 (_("%B: unknown relocation type %d for symbol %s"),
9948 input_bfd, (int) r_type, sym_name);
9950 bfd_set_error (bfd_error_bad_value);
9956 case R_PPC64_GNU_VTINHERIT:
9957 case R_PPC64_GNU_VTENTRY:
9960 /* GOT16 relocations. Like an ADDR16 using the symbol's
9961 address in the GOT as relocation value instead of the
9962 symbol's value itself. Also, create a GOT entry for the
9963 symbol and put the symbol value there. */
9964 case R_PPC64_GOT_TLSGD16:
9965 case R_PPC64_GOT_TLSGD16_LO:
9966 case R_PPC64_GOT_TLSGD16_HI:
9967 case R_PPC64_GOT_TLSGD16_HA:
9968 tls_type = TLS_TLS | TLS_GD;
9971 case R_PPC64_GOT_TLSLD16:
9972 case R_PPC64_GOT_TLSLD16_LO:
9973 case R_PPC64_GOT_TLSLD16_HI:
9974 case R_PPC64_GOT_TLSLD16_HA:
9975 tls_type = TLS_TLS | TLS_LD;
9978 case R_PPC64_GOT_TPREL16_DS:
9979 case R_PPC64_GOT_TPREL16_LO_DS:
9980 case R_PPC64_GOT_TPREL16_HI:
9981 case R_PPC64_GOT_TPREL16_HA:
9982 tls_type = TLS_TLS | TLS_TPREL;
9985 case R_PPC64_GOT_DTPREL16_DS:
9986 case R_PPC64_GOT_DTPREL16_LO_DS:
9987 case R_PPC64_GOT_DTPREL16_HI:
9988 case R_PPC64_GOT_DTPREL16_HA:
9989 tls_type = TLS_TLS | TLS_DTPREL;
9993 case R_PPC64_GOT16_LO:
9994 case R_PPC64_GOT16_HI:
9995 case R_PPC64_GOT16_HA:
9996 case R_PPC64_GOT16_DS:
9997 case R_PPC64_GOT16_LO_DS:
10000 /* Relocation is to the entry for this symbol in the global
10005 unsigned long indx = 0;
10007 if (tls_type == (TLS_TLS | TLS_LD)
10009 || !h->elf.def_dynamic))
10010 offp = &ppc64_tlsld_got (input_bfd)->offset;
10013 struct got_entry *ent;
10017 bfd_boolean dyn = htab->elf.dynamic_sections_created;
10018 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10021 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
10022 /* This is actually a static link, or it is a
10023 -Bsymbolic link and the symbol is defined
10024 locally, or the symbol was forced to be local
10025 because of a version file. */
10029 indx = h->elf.dynindx;
10030 unresolved_reloc = FALSE;
10032 ent = h->elf.got.glist;
10036 if (local_got_ents == NULL)
10038 ent = local_got_ents[r_symndx];
10041 for (; ent != NULL; ent = ent->next)
10042 if (ent->addend == rel->r_addend
10043 && ent->owner == input_bfd
10044 && ent->tls_type == tls_type)
10048 offp = &ent->got.offset;
10051 got = ppc64_elf_tdata (input_bfd)->got;
10055 /* The offset must always be a multiple of 8. We use the
10056 least significant bit to record whether we have already
10057 processed this entry. */
10059 if ((off & 1) != 0)
10063 /* Generate relocs for the dynamic linker, except in
10064 the case of TLSLD where we'll use one entry per
10066 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10069 if ((info->shared || indx != 0)
10071 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10072 || h->elf.root.type != bfd_link_hash_undefweak))
10074 outrel.r_offset = (got->output_section->vma
10075 + got->output_offset
10077 outrel.r_addend = rel->r_addend;
10078 if (tls_type & (TLS_LD | TLS_GD))
10080 outrel.r_addend = 0;
10081 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
10082 if (tls_type == (TLS_TLS | TLS_GD))
10084 loc = relgot->contents;
10085 loc += (relgot->reloc_count++
10086 * sizeof (Elf64_External_Rela));
10087 bfd_elf64_swap_reloca_out (output_bfd,
10089 outrel.r_offset += 8;
10090 outrel.r_addend = rel->r_addend;
10092 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10095 else if (tls_type == (TLS_TLS | TLS_DTPREL))
10096 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10097 else if (tls_type == (TLS_TLS | TLS_TPREL))
10098 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10099 else if (indx == 0)
10101 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10103 /* Write the .got section contents for the sake
10105 loc = got->contents + off;
10106 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10110 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
10112 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
10114 outrel.r_addend += relocation;
10115 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
10116 outrel.r_addend -= htab->elf.tls_sec->vma;
10118 loc = relgot->contents;
10119 loc += (relgot->reloc_count++
10120 * sizeof (Elf64_External_Rela));
10121 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10124 /* Init the .got section contents here if we're not
10125 emitting a reloc. */
10128 relocation += rel->r_addend;
10129 if (tls_type == (TLS_TLS | TLS_LD))
10131 else if (tls_type != 0)
10133 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
10134 if (tls_type == (TLS_TLS | TLS_TPREL))
10135 relocation += DTP_OFFSET - TP_OFFSET;
10137 if (tls_type == (TLS_TLS | TLS_GD))
10139 bfd_put_64 (output_bfd, relocation,
10140 got->contents + off + 8);
10145 bfd_put_64 (output_bfd, relocation,
10146 got->contents + off);
10150 if (off >= (bfd_vma) -2)
10153 relocation = got->output_offset + off;
10155 /* TOC base (r2) is TOC start plus 0x8000. */
10156 addend = -TOC_BASE_OFF;
10160 case R_PPC64_PLT16_HA:
10161 case R_PPC64_PLT16_HI:
10162 case R_PPC64_PLT16_LO:
10163 case R_PPC64_PLT32:
10164 case R_PPC64_PLT64:
10165 /* Relocation is to the entry for this symbol in the
10166 procedure linkage table. */
10168 /* Resolve a PLT reloc against a local symbol directly,
10169 without using the procedure linkage table. */
10173 /* It's possible that we didn't make a PLT entry for this
10174 symbol. This happens when statically linking PIC code,
10175 or when using -Bsymbolic. Go find a match if there is a
10177 if (htab->plt != NULL)
10179 struct plt_entry *ent;
10180 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
10181 if (ent->addend == rel->r_addend
10182 && ent->plt.offset != (bfd_vma) -1)
10184 relocation = (htab->plt->output_section->vma
10185 + htab->plt->output_offset
10186 + ent->plt.offset);
10187 unresolved_reloc = FALSE;
10193 /* Relocation value is TOC base. */
10194 relocation = TOCstart;
10196 relocation += htab->stub_group[input_section->id].toc_off;
10197 else if (unresolved_reloc)
10199 else if (sec != NULL && sec->id <= htab->top_id)
10200 relocation += htab->stub_group[sec->id].toc_off;
10202 unresolved_reloc = TRUE;
10205 /* TOC16 relocs. We want the offset relative to the TOC base,
10206 which is the address of the start of the TOC plus 0x8000.
10207 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10209 case R_PPC64_TOC16:
10210 case R_PPC64_TOC16_LO:
10211 case R_PPC64_TOC16_HI:
10212 case R_PPC64_TOC16_DS:
10213 case R_PPC64_TOC16_LO_DS:
10214 case R_PPC64_TOC16_HA:
10215 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
10218 /* Relocate against the beginning of the section. */
10219 case R_PPC64_SECTOFF:
10220 case R_PPC64_SECTOFF_LO:
10221 case R_PPC64_SECTOFF_HI:
10222 case R_PPC64_SECTOFF_DS:
10223 case R_PPC64_SECTOFF_LO_DS:
10224 case R_PPC64_SECTOFF_HA:
10226 addend -= sec->output_section->vma;
10229 case R_PPC64_REL14:
10230 case R_PPC64_REL14_BRNTAKEN:
10231 case R_PPC64_REL14_BRTAKEN:
10232 case R_PPC64_REL24:
10235 case R_PPC64_TPREL16:
10236 case R_PPC64_TPREL16_LO:
10237 case R_PPC64_TPREL16_HI:
10238 case R_PPC64_TPREL16_HA:
10239 case R_PPC64_TPREL16_DS:
10240 case R_PPC64_TPREL16_LO_DS:
10241 case R_PPC64_TPREL16_HIGHER:
10242 case R_PPC64_TPREL16_HIGHERA:
10243 case R_PPC64_TPREL16_HIGHEST:
10244 case R_PPC64_TPREL16_HIGHESTA:
10245 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10247 /* The TPREL16 relocs shouldn't really be used in shared
10248 libs as they will result in DT_TEXTREL being set, but
10249 support them anyway. */
10253 case R_PPC64_DTPREL16:
10254 case R_PPC64_DTPREL16_LO:
10255 case R_PPC64_DTPREL16_HI:
10256 case R_PPC64_DTPREL16_HA:
10257 case R_PPC64_DTPREL16_DS:
10258 case R_PPC64_DTPREL16_LO_DS:
10259 case R_PPC64_DTPREL16_HIGHER:
10260 case R_PPC64_DTPREL16_HIGHERA:
10261 case R_PPC64_DTPREL16_HIGHEST:
10262 case R_PPC64_DTPREL16_HIGHESTA:
10263 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10266 case R_PPC64_DTPMOD64:
10271 case R_PPC64_TPREL64:
10272 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10275 case R_PPC64_DTPREL64:
10276 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10279 /* Relocations that may need to be propagated if this is a
10281 case R_PPC64_REL30:
10282 case R_PPC64_REL32:
10283 case R_PPC64_REL64:
10284 case R_PPC64_ADDR14:
10285 case R_PPC64_ADDR14_BRNTAKEN:
10286 case R_PPC64_ADDR14_BRTAKEN:
10287 case R_PPC64_ADDR16:
10288 case R_PPC64_ADDR16_DS:
10289 case R_PPC64_ADDR16_HA:
10290 case R_PPC64_ADDR16_HI:
10291 case R_PPC64_ADDR16_HIGHER:
10292 case R_PPC64_ADDR16_HIGHERA:
10293 case R_PPC64_ADDR16_HIGHEST:
10294 case R_PPC64_ADDR16_HIGHESTA:
10295 case R_PPC64_ADDR16_LO:
10296 case R_PPC64_ADDR16_LO_DS:
10297 case R_PPC64_ADDR24:
10298 case R_PPC64_ADDR32:
10299 case R_PPC64_ADDR64:
10300 case R_PPC64_UADDR16:
10301 case R_PPC64_UADDR32:
10302 case R_PPC64_UADDR64:
10303 /* r_symndx will be zero only for relocs against symbols
10304 from removed linkonce sections, or sections discarded by
10305 a linker script. */
10312 if ((input_section->flags & SEC_ALLOC) == 0)
10315 if (NO_OPD_RELOCS && is_opd)
10320 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10321 || h->elf.root.type != bfd_link_hash_undefweak)
10322 && (MUST_BE_DYN_RELOC (r_type)
10323 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
10324 || (ELIMINATE_COPY_RELOCS
10327 && h->elf.dynindx != -1
10328 && !h->elf.non_got_ref
10329 && h->elf.def_dynamic
10330 && !h->elf.def_regular))
10332 Elf_Internal_Rela outrel;
10333 bfd_boolean skip, relocate;
10338 /* When generating a dynamic object, these relocations
10339 are copied into the output file to be resolved at run
10345 out_off = _bfd_elf_section_offset (output_bfd, info,
10346 input_section, rel->r_offset);
10347 if (out_off == (bfd_vma) -1)
10349 else if (out_off == (bfd_vma) -2)
10350 skip = TRUE, relocate = TRUE;
10351 out_off += (input_section->output_section->vma
10352 + input_section->output_offset);
10353 outrel.r_offset = out_off;
10354 outrel.r_addend = rel->r_addend;
10356 /* Optimize unaligned reloc use. */
10357 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10358 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10359 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10360 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10361 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10362 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10363 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10364 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10365 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10368 memset (&outrel, 0, sizeof outrel);
10369 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
10371 && r_type != R_PPC64_TOC)
10372 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
10375 /* This symbol is local, or marked to become local,
10376 or this is an opd section reloc which must point
10377 at a local function. */
10378 outrel.r_addend += relocation;
10379 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
10381 if (is_opd && h != NULL)
10383 /* Lie about opd entries. This case occurs
10384 when building shared libraries and we
10385 reference a function in another shared
10386 lib. The same thing happens for a weak
10387 definition in an application that's
10388 overridden by a strong definition in a
10389 shared lib. (I believe this is a generic
10390 bug in binutils handling of weak syms.)
10391 In these cases we won't use the opd
10392 entry in this lib. */
10393 unresolved_reloc = FALSE;
10395 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10397 /* We need to relocate .opd contents for ld.so.
10398 Prelink also wants simple and consistent rules
10399 for relocs. This make all RELATIVE relocs have
10400 *r_offset equal to r_addend. */
10407 if (bfd_is_abs_section (sec))
10409 else if (sec == NULL || sec->owner == NULL)
10411 bfd_set_error (bfd_error_bad_value);
10418 osec = sec->output_section;
10419 indx = elf_section_data (osec)->dynindx;
10421 /* We are turning this relocation into one
10422 against a section symbol, so subtract out
10423 the output section's address but not the
10424 offset of the input section in the output
10426 outrel.r_addend -= osec->vma;
10429 outrel.r_info = ELF64_R_INFO (indx, r_type);
10433 sreloc = elf_section_data (input_section)->sreloc;
10434 if (sreloc == NULL)
10437 loc = sreloc->contents;
10438 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
10439 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10441 /* If this reloc is against an external symbol, it will
10442 be computed at runtime, so there's no need to do
10443 anything now. However, for the sake of prelink ensure
10444 that the section contents are a known value. */
10447 unresolved_reloc = FALSE;
10448 /* The value chosen here is quite arbitrary as ld.so
10449 ignores section contents except for the special
10450 case of .opd where the contents might be accessed
10451 before relocation. Choose zero, as that won't
10452 cause reloc overflow. */
10455 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10456 to improve backward compatibility with older
10458 if (r_type == R_PPC64_ADDR64)
10459 addend = outrel.r_addend;
10460 /* Adjust pc_relative relocs to have zero in *r_offset. */
10461 else if (ppc64_elf_howto_table[r_type]->pc_relative)
10462 addend = (input_section->output_section->vma
10463 + input_section->output_offset
10470 case R_PPC64_GLOB_DAT:
10471 case R_PPC64_JMP_SLOT:
10472 case R_PPC64_RELATIVE:
10473 /* We shouldn't ever see these dynamic relocs in relocatable
10475 /* Fall through. */
10477 case R_PPC64_PLTGOT16:
10478 case R_PPC64_PLTGOT16_DS:
10479 case R_PPC64_PLTGOT16_HA:
10480 case R_PPC64_PLTGOT16_HI:
10481 case R_PPC64_PLTGOT16_LO:
10482 case R_PPC64_PLTGOT16_LO_DS:
10483 case R_PPC64_PLTREL32:
10484 case R_PPC64_PLTREL64:
10485 /* These ones haven't been implemented yet. */
10487 (*_bfd_error_handler)
10488 (_("%B: relocation %s is not supported for symbol %s."),
10490 ppc64_elf_howto_table[r_type]->name, sym_name);
10492 bfd_set_error (bfd_error_invalid_operation);
10497 /* Do any further special processing. */
10503 case R_PPC64_ADDR16_HA:
10504 case R_PPC64_ADDR16_HIGHERA:
10505 case R_PPC64_ADDR16_HIGHESTA:
10506 case R_PPC64_GOT16_HA:
10507 case R_PPC64_PLTGOT16_HA:
10508 case R_PPC64_PLT16_HA:
10509 case R_PPC64_TOC16_HA:
10510 case R_PPC64_SECTOFF_HA:
10511 case R_PPC64_TPREL16_HA:
10512 case R_PPC64_DTPREL16_HA:
10513 case R_PPC64_GOT_TLSGD16_HA:
10514 case R_PPC64_GOT_TLSLD16_HA:
10515 case R_PPC64_GOT_TPREL16_HA:
10516 case R_PPC64_GOT_DTPREL16_HA:
10517 case R_PPC64_TPREL16_HIGHER:
10518 case R_PPC64_TPREL16_HIGHERA:
10519 case R_PPC64_TPREL16_HIGHEST:
10520 case R_PPC64_TPREL16_HIGHESTA:
10521 case R_PPC64_DTPREL16_HIGHER:
10522 case R_PPC64_DTPREL16_HIGHERA:
10523 case R_PPC64_DTPREL16_HIGHEST:
10524 case R_PPC64_DTPREL16_HIGHESTA:
10525 /* It's just possible that this symbol is a weak symbol
10526 that's not actually defined anywhere. In that case,
10527 'sec' would be NULL, and we should leave the symbol
10528 alone (it will be set to zero elsewhere in the link). */
10530 /* Add 0x10000 if sign bit in 0:15 is set.
10531 Bits 0:15 are not used. */
10535 case R_PPC64_ADDR16_DS:
10536 case R_PPC64_ADDR16_LO_DS:
10537 case R_PPC64_GOT16_DS:
10538 case R_PPC64_GOT16_LO_DS:
10539 case R_PPC64_PLT16_LO_DS:
10540 case R_PPC64_SECTOFF_DS:
10541 case R_PPC64_SECTOFF_LO_DS:
10542 case R_PPC64_TOC16_DS:
10543 case R_PPC64_TOC16_LO_DS:
10544 case R_PPC64_PLTGOT16_DS:
10545 case R_PPC64_PLTGOT16_LO_DS:
10546 case R_PPC64_GOT_TPREL16_DS:
10547 case R_PPC64_GOT_TPREL16_LO_DS:
10548 case R_PPC64_GOT_DTPREL16_DS:
10549 case R_PPC64_GOT_DTPREL16_LO_DS:
10550 case R_PPC64_TPREL16_DS:
10551 case R_PPC64_TPREL16_LO_DS:
10552 case R_PPC64_DTPREL16_DS:
10553 case R_PPC64_DTPREL16_LO_DS:
10554 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10556 /* If this reloc is against an lq insn, then the value must be
10557 a multiple of 16. This is somewhat of a hack, but the
10558 "correct" way to do this by defining _DQ forms of all the
10559 _DS relocs bloats all reloc switches in this file. It
10560 doesn't seem to make much sense to use any of these relocs
10561 in data, so testing the insn should be safe. */
10562 if ((insn & (0x3f << 26)) == (56u << 26))
10564 if (((relocation + addend) & mask) != 0)
10566 (*_bfd_error_handler)
10567 (_("%B: error: relocation %s not a multiple of %d"),
10569 ppc64_elf_howto_table[r_type]->name,
10571 bfd_set_error (bfd_error_bad_value);
10578 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10579 because such sections are not SEC_ALLOC and thus ld.so will
10580 not process them. */
10581 if (unresolved_reloc
10582 && !((input_section->flags & SEC_DEBUGGING) != 0
10583 && h->elf.def_dynamic))
10585 (*_bfd_error_handler)
10586 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10589 (long) rel->r_offset,
10590 ppc64_elf_howto_table[(int) r_type]->name,
10591 h->elf.root.root.string);
10595 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
10603 if (r != bfd_reloc_ok)
10605 if (sym_name == NULL)
10606 sym_name = "(null)";
10607 if (r == bfd_reloc_overflow)
10612 && h->elf.root.type == bfd_link_hash_undefweak
10613 && ppc64_elf_howto_table[r_type]->pc_relative)
10615 /* Assume this is a call protected by other code that
10616 detects the symbol is undefined. If this is the case,
10617 we can safely ignore the overflow. If not, the
10618 program is hosed anyway, and a little warning isn't
10624 if (!((*info->callbacks->reloc_overflow)
10625 (info, (h ? &h->elf.root : NULL), sym_name,
10626 ppc64_elf_howto_table[r_type]->name,
10627 rel->r_addend, input_bfd, input_section, rel->r_offset)))
10632 (*_bfd_error_handler)
10633 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10636 (long) rel->r_offset,
10637 ppc64_elf_howto_table[r_type]->name,
10645 /* If we're emitting relocations, then shortly after this function
10646 returns, reloc offsets and addends for this section will be
10647 adjusted. Worse, reloc symbol indices will be for the output
10648 file rather than the input. Save a copy of the relocs for
10649 opd_entry_value. */
10650 if (is_opd && info->emitrelocations)
10653 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10654 rel = bfd_alloc (input_bfd, amt);
10655 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10656 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10659 memcpy (rel, relocs, amt);
10664 /* Adjust the value of any local symbols in opd sections. */
10667 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10668 const char *name ATTRIBUTE_UNUSED,
10669 Elf_Internal_Sym *elfsym,
10670 asection *input_sec,
10671 struct elf_link_hash_entry *h)
10673 long *opd_adjust, adjust;
10679 opd_adjust = get_opd_info (input_sec);
10680 if (opd_adjust == NULL)
10683 value = elfsym->st_value - input_sec->output_offset;
10684 if (!info->relocatable)
10685 value -= input_sec->output_section->vma;
10687 adjust = opd_adjust[value / 8];
10689 elfsym->st_value = 0;
10691 elfsym->st_value += adjust;
10695 /* Finish up dynamic symbol handling. We set the contents of various
10696 dynamic sections here. */
10699 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10700 struct bfd_link_info *info,
10701 struct elf_link_hash_entry *h,
10702 Elf_Internal_Sym *sym)
10704 struct ppc_link_hash_table *htab;
10706 struct plt_entry *ent;
10707 Elf_Internal_Rela rela;
10710 htab = ppc_hash_table (info);
10711 dynobj = htab->elf.dynobj;
10713 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10714 if (ent->plt.offset != (bfd_vma) -1)
10716 /* This symbol has an entry in the procedure linkage
10717 table. Set it up. */
10719 if (htab->plt == NULL
10720 || htab->relplt == NULL
10721 || htab->glink == NULL)
10724 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10725 fill in the PLT entry. */
10726 rela.r_offset = (htab->plt->output_section->vma
10727 + htab->plt->output_offset
10728 + ent->plt.offset);
10729 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10730 rela.r_addend = ent->addend;
10732 loc = htab->relplt->contents;
10733 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10734 * sizeof (Elf64_External_Rela));
10735 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10740 Elf_Internal_Rela rela;
10743 /* This symbol needs a copy reloc. Set it up. */
10745 if (h->dynindx == -1
10746 || (h->root.type != bfd_link_hash_defined
10747 && h->root.type != bfd_link_hash_defweak)
10748 || htab->relbss == NULL)
10751 rela.r_offset = (h->root.u.def.value
10752 + h->root.u.def.section->output_section->vma
10753 + h->root.u.def.section->output_offset);
10754 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10756 loc = htab->relbss->contents;
10757 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
10758 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10761 /* Mark some specially defined symbols as absolute. */
10762 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10763 sym->st_shndx = SHN_ABS;
10768 /* Used to decide how to sort relocs in an optimal manner for the
10769 dynamic linker, before writing them out. */
10771 static enum elf_reloc_type_class
10772 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
10774 enum elf_ppc64_reloc_type r_type;
10776 r_type = ELF64_R_TYPE (rela->r_info);
10779 case R_PPC64_RELATIVE:
10780 return reloc_class_relative;
10781 case R_PPC64_JMP_SLOT:
10782 return reloc_class_plt;
10784 return reloc_class_copy;
10786 return reloc_class_normal;
10790 /* Finish up the dynamic sections. */
10793 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10794 struct bfd_link_info *info)
10796 struct ppc_link_hash_table *htab;
10800 htab = ppc_hash_table (info);
10801 dynobj = htab->elf.dynobj;
10802 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10804 if (htab->elf.dynamic_sections_created)
10806 Elf64_External_Dyn *dyncon, *dynconend;
10808 if (sdyn == NULL || htab->got == NULL)
10811 dyncon = (Elf64_External_Dyn *) sdyn->contents;
10812 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
10813 for (; dyncon < dynconend; dyncon++)
10815 Elf_Internal_Dyn dyn;
10818 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10825 case DT_PPC64_GLINK:
10827 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10828 /* We stupidly defined DT_PPC64_GLINK to be the start
10829 of glink rather than the first entry point, which is
10830 what ld.so needs, and now have a bigger stub to
10831 support automatic multiple TOCs. */
10832 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
10836 s = bfd_get_section_by_name (output_bfd, ".opd");
10839 dyn.d_un.d_ptr = s->vma;
10842 case DT_PPC64_OPDSZ:
10843 s = bfd_get_section_by_name (output_bfd, ".opd");
10846 dyn.d_un.d_val = s->size;
10851 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10856 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10860 dyn.d_un.d_val = htab->relplt->size;
10864 /* Don't count procedure linkage table relocs in the
10865 overall reloc count. */
10869 dyn.d_un.d_val -= s->size;
10873 /* We may not be using the standard ELF linker script.
10874 If .rela.plt is the first .rela section, we adjust
10875 DT_RELA to not include it. */
10879 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10881 dyn.d_un.d_ptr += s->size;
10885 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
10889 if (htab->got != NULL && htab->got->size != 0)
10891 /* Fill in the first entry in the global offset table.
10892 We use it to hold the link-time TOCbase. */
10893 bfd_put_64 (output_bfd,
10894 elf_gp (output_bfd) + TOC_BASE_OFF,
10895 htab->got->contents);
10897 /* Set .got entry size. */
10898 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
10901 if (htab->plt != NULL && htab->plt->size != 0)
10903 /* Set .plt entry size. */
10904 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
10908 /* We need to handle writing out multiple GOT sections ourselves,
10909 since we didn't add them to DYNOBJ. We know dynobj is the first
10911 while ((dynobj = dynobj->link_next) != NULL)
10915 if (!is_ppc64_elf_target (dynobj->xvec))
10918 s = ppc64_elf_tdata (dynobj)->got;
10921 && s->output_section != bfd_abs_section_ptr
10922 && !bfd_set_section_contents (output_bfd, s->output_section,
10923 s->contents, s->output_offset,
10926 s = ppc64_elf_tdata (dynobj)->relgot;
10929 && s->output_section != bfd_abs_section_ptr
10930 && !bfd_set_section_contents (output_bfd, s->output_section,
10931 s->contents, s->output_offset,
10939 #include "elf64-target.h"