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 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3772 ppc64_elf_copy_indirect_symbol
3773 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3774 struct elf_link_hash_entry *dir,
3775 struct elf_link_hash_entry *ind)
3777 struct ppc_link_hash_entry *edir, *eind;
3779 edir = (struct ppc_link_hash_entry *) dir;
3780 eind = (struct ppc_link_hash_entry *) ind;
3782 /* Copy over any dynamic relocs we may have on the indirect sym. */
3783 if (eind->dyn_relocs != NULL)
3785 if (edir->dyn_relocs != NULL)
3787 struct ppc_dyn_relocs **pp;
3788 struct ppc_dyn_relocs *p;
3790 if (eind->elf.root.type == bfd_link_hash_indirect)
3793 /* Add reloc counts against the weak sym to the strong sym
3794 list. Merge any entries against the same section. */
3795 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3797 struct ppc_dyn_relocs *q;
3799 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3800 if (q->sec == p->sec)
3802 q->pc_count += p->pc_count;
3803 q->count += p->count;
3810 *pp = edir->dyn_relocs;
3813 edir->dyn_relocs = eind->dyn_relocs;
3814 eind->dyn_relocs = NULL;
3817 edir->is_func |= eind->is_func;
3818 edir->is_func_descriptor |= eind->is_func_descriptor;
3819 edir->tls_mask |= eind->tls_mask;
3821 /* If called to transfer flags for a weakdef during processing
3822 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3823 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3824 if (!(ELIMINATE_COPY_RELOCS
3825 && eind->elf.root.type != bfd_link_hash_indirect
3826 && edir->elf.dynamic_adjusted))
3827 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3829 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3830 edir->elf.ref_regular |= eind->elf.ref_regular;
3831 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3832 edir->elf.needs_plt |= eind->elf.needs_plt;
3834 /* If we were called to copy over info for a weak sym, that's all. */
3835 if (eind->elf.root.type != bfd_link_hash_indirect)
3838 /* Copy over got entries that we may have already seen to the
3839 symbol which just became indirect. */
3840 if (eind->elf.got.glist != NULL)
3842 if (edir->elf.got.glist != NULL)
3844 struct got_entry **entp;
3845 struct got_entry *ent;
3847 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3849 struct got_entry *dent;
3851 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3852 if (dent->addend == ent->addend
3853 && dent->owner == ent->owner
3854 && dent->tls_type == ent->tls_type)
3856 dent->got.refcount += ent->got.refcount;
3863 *entp = edir->elf.got.glist;
3866 edir->elf.got.glist = eind->elf.got.glist;
3867 eind->elf.got.glist = NULL;
3870 /* And plt entries. */
3871 if (eind->elf.plt.plist != NULL)
3873 if (edir->elf.plt.plist != NULL)
3875 struct plt_entry **entp;
3876 struct plt_entry *ent;
3878 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3880 struct plt_entry *dent;
3882 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3883 if (dent->addend == ent->addend)
3885 dent->plt.refcount += ent->plt.refcount;
3892 *entp = edir->elf.plt.plist;
3895 edir->elf.plt.plist = eind->elf.plt.plist;
3896 eind->elf.plt.plist = NULL;
3899 if (edir->elf.dynindx == -1)
3901 edir->elf.dynindx = eind->elf.dynindx;
3902 edir->elf.dynstr_index = eind->elf.dynstr_index;
3903 eind->elf.dynindx = -1;
3904 eind->elf.dynstr_index = 0;
3907 BFD_ASSERT (eind->elf.dynindx == -1);
3910 /* Find the function descriptor hash entry from the given function code
3911 hash entry FH. Link the entries via their OH fields. */
3913 static struct ppc_link_hash_entry *
3914 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3916 struct ppc_link_hash_entry *fdh = fh->oh;
3920 const char *fd_name = fh->elf.root.root.string + 1;
3922 fdh = (struct ppc_link_hash_entry *)
3923 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3926 fdh->is_func_descriptor = 1;
3936 /* Make a fake function descriptor sym for the code sym FH. */
3938 static struct ppc_link_hash_entry *
3939 make_fdh (struct bfd_link_info *info,
3940 struct ppc_link_hash_entry *fh)
3944 struct bfd_link_hash_entry *bh;
3945 struct ppc_link_hash_entry *fdh;
3947 abfd = fh->elf.root.u.undef.abfd;
3948 newsym = bfd_make_empty_symbol (abfd);
3949 newsym->name = fh->elf.root.root.string + 1;
3950 newsym->section = bfd_und_section_ptr;
3952 newsym->flags = BSF_WEAK;
3955 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
3956 newsym->flags, newsym->section,
3957 newsym->value, NULL, FALSE, FALSE,
3961 fdh = (struct ppc_link_hash_entry *) bh;
3962 fdh->elf.non_elf = 0;
3964 fdh->is_func_descriptor = 1;
3971 /* Hacks to support old ABI code.
3972 When making function calls, old ABI code references function entry
3973 points (dot symbols), while new ABI code references the function
3974 descriptor symbol. We need to make any combination of reference and
3975 definition work together, without breaking archive linking.
3977 For a defined function "foo" and an undefined call to "bar":
3978 An old object defines "foo" and ".foo", references ".bar" (possibly
3980 A new object defines "foo" and references "bar".
3982 A new object thus has no problem with its undefined symbols being
3983 satisfied by definitions in an old object. On the other hand, the
3984 old object won't have ".bar" satisfied by a new object. */
3986 /* Fix function descriptor symbols defined in .opd sections to be
3990 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
3991 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3992 Elf_Internal_Sym *isym,
3993 const char **name ATTRIBUTE_UNUSED,
3994 flagword *flags ATTRIBUTE_UNUSED,
3996 bfd_vma *value ATTRIBUTE_UNUSED)
3999 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
4000 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4004 /* This function makes an old ABI object reference to ".bar" cause the
4005 inclusion of a new ABI object archive that defines "bar".
4006 NAME is a symbol defined in an archive. Return a symbol in the hash
4007 table that might be satisfied by the archive symbols. */
4009 static struct elf_link_hash_entry *
4010 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4011 struct bfd_link_info *info,
4014 struct elf_link_hash_entry *h;
4018 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4020 /* Don't return this sym if it is a fake function descriptor
4021 created by add_symbol_adjust. */
4022 && !(h->root.type == bfd_link_hash_undefweak
4023 && ((struct ppc_link_hash_entry *) h)->fake))
4029 len = strlen (name);
4030 dot_name = bfd_alloc (abfd, len + 2);
4031 if (dot_name == NULL)
4032 return (struct elf_link_hash_entry *) 0 - 1;
4034 memcpy (dot_name + 1, name, len + 1);
4035 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4036 bfd_release (abfd, dot_name);
4040 /* This function satisfies all old ABI object references to ".bar" if a
4041 new ABI object defines "bar". Well, at least, undefined dot symbols
4042 are made weak. This stops later archive searches from including an
4043 object if we already have a function descriptor definition. It also
4044 prevents the linker complaining about undefined symbols.
4045 We also check and correct mismatched symbol visibility here. The
4046 most restrictive visibility of the function descriptor and the
4047 function entry symbol is used. */
4049 struct add_symbol_adjust_data
4051 struct bfd_link_info *info;
4056 add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4058 struct add_symbol_adjust_data *data;
4059 struct ppc_link_hash_table *htab;
4060 struct ppc_link_hash_entry *eh;
4061 struct ppc_link_hash_entry *fdh;
4063 if (h->root.type == bfd_link_hash_indirect)
4066 if (h->root.type == bfd_link_hash_warning)
4067 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4069 if (h->root.root.string[0] != '.')
4073 htab = ppc_hash_table (data->info);
4074 eh = (struct ppc_link_hash_entry *) h;
4075 fdh = get_fdh (eh, htab);
4077 && (eh->elf.root.type == bfd_link_hash_undefined
4078 || eh->elf.root.type == bfd_link_hash_undefweak)
4079 && eh->elf.ref_regular)
4081 /* Make an undefweak function descriptor sym, which is enough to
4082 pull in an --as-needed shared lib, but won't cause link
4083 errors. Archives are handled elsewhere. */
4084 fdh = make_fdh (data->info, eh);
4088 fdh->elf.ref_regular = 1;
4090 else if (fdh != NULL)
4092 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4093 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4094 if (entry_vis < descr_vis)
4095 fdh->elf.other += entry_vis - descr_vis;
4096 else if (entry_vis > descr_vis)
4097 eh->elf.other += descr_vis - entry_vis;
4099 if (eh->elf.root.type == bfd_link_hash_undefined
4100 && (fdh->elf.root.type == bfd_link_hash_defined
4101 || fdh->elf.root.type == bfd_link_hash_defweak))
4103 eh->elf.root.type = bfd_link_hash_undefweak;
4104 eh->was_undefined = 1;
4105 htab->twiddled_syms = 1;
4113 ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4114 struct bfd_link_info *info)
4116 struct ppc_link_hash_table *htab;
4117 struct add_symbol_adjust_data data;
4119 htab = ppc_hash_table (info);
4120 if (!is_ppc64_elf_target (htab->elf.root.creator))
4125 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
4127 /* We need to fix the undefs list for any syms we have twiddled to
4129 if (htab->twiddled_syms)
4131 bfd_link_repair_undef_list (&htab->elf.root);
4132 htab->twiddled_syms = 0;
4138 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4139 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4141 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4142 char *local_got_tls_masks;
4144 if (local_got_ents == NULL)
4146 bfd_size_type size = symtab_hdr->sh_info;
4148 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4149 local_got_ents = bfd_zalloc (abfd, size);
4150 if (local_got_ents == NULL)
4152 elf_local_got_ents (abfd) = local_got_ents;
4155 if ((tls_type & TLS_EXPLICIT) == 0)
4157 struct got_entry *ent;
4159 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4160 if (ent->addend == r_addend
4161 && ent->owner == abfd
4162 && ent->tls_type == tls_type)
4166 bfd_size_type amt = sizeof (*ent);
4167 ent = bfd_alloc (abfd, amt);
4170 ent->next = local_got_ents[r_symndx];
4171 ent->addend = r_addend;
4173 ent->tls_type = tls_type;
4174 ent->got.refcount = 0;
4175 local_got_ents[r_symndx] = ent;
4177 ent->got.refcount += 1;
4180 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4181 local_got_tls_masks[r_symndx] |= tls_type;
4186 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4188 struct plt_entry *ent;
4190 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4191 if (ent->addend == addend)
4195 bfd_size_type amt = sizeof (*ent);
4196 ent = bfd_alloc (abfd, amt);
4199 ent->next = eh->elf.plt.plist;
4200 ent->addend = addend;
4201 ent->plt.refcount = 0;
4202 eh->elf.plt.plist = ent;
4204 ent->plt.refcount += 1;
4205 eh->elf.needs_plt = 1;
4210 /* Look through the relocs for a section during the first phase, and
4211 calculate needed space in the global offset table, procedure
4212 linkage table, and dynamic reloc sections. */
4215 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4216 asection *sec, const Elf_Internal_Rela *relocs)
4218 struct ppc_link_hash_table *htab;
4219 Elf_Internal_Shdr *symtab_hdr;
4220 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4221 const Elf_Internal_Rela *rel;
4222 const Elf_Internal_Rela *rel_end;
4224 asection **opd_sym_map;
4226 if (info->relocatable)
4229 /* Don't do anything special with non-loaded, non-alloced sections.
4230 In particular, any relocs in such sections should not affect GOT
4231 and PLT reference counting (ie. we don't allow them to create GOT
4232 or PLT entries), there's no possibility or desire to optimize TLS
4233 relocs, and there's not much point in propagating relocs to shared
4234 libs that the dynamic linker won't relocate. */
4235 if ((sec->flags & SEC_ALLOC) == 0)
4238 htab = ppc_hash_table (info);
4239 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4241 sym_hashes = elf_sym_hashes (abfd);
4242 sym_hashes_end = (sym_hashes
4243 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4244 - symtab_hdr->sh_info);
4248 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4250 /* Garbage collection needs some extra help with .opd sections.
4251 We don't want to necessarily keep everything referenced by
4252 relocs in .opd, as that would keep all functions. Instead,
4253 if we reference an .opd symbol (a function descriptor), we
4254 want to keep the function code symbol's section. This is
4255 easy for global symbols, but for local syms we need to keep
4256 information about the associated function section. Later, if
4257 edit_opd deletes entries, we'll use this array to adjust
4258 local syms in .opd. */
4260 asection *func_section;
4265 amt = sec->size * sizeof (union opd_info) / 8;
4266 opd_sym_map = bfd_zalloc (abfd, amt);
4267 if (opd_sym_map == NULL)
4269 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
4272 if (htab->sfpr == NULL
4273 && !create_linkage_sections (htab->elf.dynobj, info))
4276 rel_end = relocs + sec->reloc_count;
4277 for (rel = relocs; rel < rel_end; rel++)
4279 unsigned long r_symndx;
4280 struct elf_link_hash_entry *h;
4281 enum elf_ppc64_reloc_type r_type;
4284 r_symndx = ELF64_R_SYM (rel->r_info);
4285 if (r_symndx < symtab_hdr->sh_info)
4288 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4290 r_type = ELF64_R_TYPE (rel->r_info);
4293 case R_PPC64_GOT_TLSLD16:
4294 case R_PPC64_GOT_TLSLD16_LO:
4295 case R_PPC64_GOT_TLSLD16_HI:
4296 case R_PPC64_GOT_TLSLD16_HA:
4297 ppc64_tlsld_got (abfd)->refcount += 1;
4298 tls_type = TLS_TLS | TLS_LD;
4301 case R_PPC64_GOT_TLSGD16:
4302 case R_PPC64_GOT_TLSGD16_LO:
4303 case R_PPC64_GOT_TLSGD16_HI:
4304 case R_PPC64_GOT_TLSGD16_HA:
4305 tls_type = TLS_TLS | TLS_GD;
4308 case R_PPC64_GOT_TPREL16_DS:
4309 case R_PPC64_GOT_TPREL16_LO_DS:
4310 case R_PPC64_GOT_TPREL16_HI:
4311 case R_PPC64_GOT_TPREL16_HA:
4313 info->flags |= DF_STATIC_TLS;
4314 tls_type = TLS_TLS | TLS_TPREL;
4317 case R_PPC64_GOT_DTPREL16_DS:
4318 case R_PPC64_GOT_DTPREL16_LO_DS:
4319 case R_PPC64_GOT_DTPREL16_HI:
4320 case R_PPC64_GOT_DTPREL16_HA:
4321 tls_type = TLS_TLS | TLS_DTPREL;
4323 sec->has_tls_reloc = 1;
4327 case R_PPC64_GOT16_DS:
4328 case R_PPC64_GOT16_HA:
4329 case R_PPC64_GOT16_HI:
4330 case R_PPC64_GOT16_LO:
4331 case R_PPC64_GOT16_LO_DS:
4332 /* This symbol requires a global offset table entry. */
4333 sec->has_toc_reloc = 1;
4334 if (ppc64_elf_tdata (abfd)->got == NULL
4335 && !create_got_section (abfd, info))
4340 struct ppc_link_hash_entry *eh;
4341 struct got_entry *ent;
4343 eh = (struct ppc_link_hash_entry *) h;
4344 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4345 if (ent->addend == rel->r_addend
4346 && ent->owner == abfd
4347 && ent->tls_type == tls_type)
4351 bfd_size_type amt = sizeof (*ent);
4352 ent = bfd_alloc (abfd, amt);
4355 ent->next = eh->elf.got.glist;
4356 ent->addend = rel->r_addend;
4358 ent->tls_type = tls_type;
4359 ent->got.refcount = 0;
4360 eh->elf.got.glist = ent;
4362 ent->got.refcount += 1;
4363 eh->tls_mask |= tls_type;
4366 /* This is a global offset table entry for a local symbol. */
4367 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4368 rel->r_addend, tls_type))
4372 case R_PPC64_PLT16_HA:
4373 case R_PPC64_PLT16_HI:
4374 case R_PPC64_PLT16_LO:
4377 /* This symbol requires a procedure linkage table entry. We
4378 actually build the entry in adjust_dynamic_symbol,
4379 because this might be a case of linking PIC code without
4380 linking in any dynamic objects, in which case we don't
4381 need to generate a procedure linkage table after all. */
4384 /* It does not make sense to have a procedure linkage
4385 table entry for a local symbol. */
4386 bfd_set_error (bfd_error_bad_value);
4390 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4395 /* The following relocations don't need to propagate the
4396 relocation if linking a shared object since they are
4397 section relative. */
4398 case R_PPC64_SECTOFF:
4399 case R_PPC64_SECTOFF_LO:
4400 case R_PPC64_SECTOFF_HI:
4401 case R_PPC64_SECTOFF_HA:
4402 case R_PPC64_SECTOFF_DS:
4403 case R_PPC64_SECTOFF_LO_DS:
4404 case R_PPC64_DTPREL16:
4405 case R_PPC64_DTPREL16_LO:
4406 case R_PPC64_DTPREL16_HI:
4407 case R_PPC64_DTPREL16_HA:
4408 case R_PPC64_DTPREL16_DS:
4409 case R_PPC64_DTPREL16_LO_DS:
4410 case R_PPC64_DTPREL16_HIGHER:
4411 case R_PPC64_DTPREL16_HIGHERA:
4412 case R_PPC64_DTPREL16_HIGHEST:
4413 case R_PPC64_DTPREL16_HIGHESTA:
4418 case R_PPC64_TOC16_LO:
4419 case R_PPC64_TOC16_HI:
4420 case R_PPC64_TOC16_HA:
4421 case R_PPC64_TOC16_DS:
4422 case R_PPC64_TOC16_LO_DS:
4423 sec->has_toc_reloc = 1;
4426 /* This relocation describes the C++ object vtable hierarchy.
4427 Reconstruct it for later use during GC. */
4428 case R_PPC64_GNU_VTINHERIT:
4429 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4433 /* This relocation describes which C++ vtable entries are actually
4434 used. Record for later use during GC. */
4435 case R_PPC64_GNU_VTENTRY:
4436 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4441 case R_PPC64_REL14_BRTAKEN:
4442 case R_PPC64_REL14_BRNTAKEN:
4443 htab->has_14bit_branch = 1;
4449 /* We may need a .plt entry if the function this reloc
4450 refers to is in a shared lib. */
4451 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4454 if (h == &htab->tls_get_addr->elf
4455 || h == &htab->tls_get_addr_fd->elf)
4456 sec->has_tls_reloc = 1;
4457 else if (htab->tls_get_addr == NULL
4458 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
4459 && (h->root.root.string[15] == 0
4460 || h->root.root.string[15] == '@'))
4462 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4463 sec->has_tls_reloc = 1;
4465 else if (htab->tls_get_addr_fd == NULL
4466 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4467 && (h->root.root.string[14] == 0
4468 || h->root.root.string[14] == '@'))
4470 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4471 sec->has_tls_reloc = 1;
4476 case R_PPC64_TPREL64:
4477 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4479 info->flags |= DF_STATIC_TLS;
4482 case R_PPC64_DTPMOD64:
4483 if (rel + 1 < rel_end
4484 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4485 && rel[1].r_offset == rel->r_offset + 8)
4486 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4488 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4491 case R_PPC64_DTPREL64:
4492 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4494 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4495 && rel[-1].r_offset == rel->r_offset - 8)
4496 /* This is the second reloc of a dtpmod, dtprel pair.
4497 Don't mark with TLS_DTPREL. */
4501 sec->has_tls_reloc = 1;
4504 struct ppc_link_hash_entry *eh;
4505 eh = (struct ppc_link_hash_entry *) h;
4506 eh->tls_mask |= tls_type;
4509 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4510 rel->r_addend, tls_type))
4513 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4515 /* One extra to simplify get_tls_mask. */
4516 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4517 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4518 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4521 BFD_ASSERT (rel->r_offset % 8 == 0);
4522 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4524 /* Mark the second slot of a GD or LD entry.
4525 -1 to indicate GD and -2 to indicate LD. */
4526 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4527 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4528 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4529 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4532 case R_PPC64_TPREL16:
4533 case R_PPC64_TPREL16_LO:
4534 case R_PPC64_TPREL16_HI:
4535 case R_PPC64_TPREL16_HA:
4536 case R_PPC64_TPREL16_DS:
4537 case R_PPC64_TPREL16_LO_DS:
4538 case R_PPC64_TPREL16_HIGHER:
4539 case R_PPC64_TPREL16_HIGHERA:
4540 case R_PPC64_TPREL16_HIGHEST:
4541 case R_PPC64_TPREL16_HIGHESTA:
4544 info->flags |= DF_STATIC_TLS;
4549 case R_PPC64_ADDR64:
4550 if (opd_sym_map != NULL
4551 && rel + 1 < rel_end
4552 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4556 if (h->root.root.string[0] == '.'
4557 && h->root.root.string[1] != 0
4558 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4561 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4567 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4572 opd_sym_map[rel->r_offset / 8] = s;
4580 case R_PPC64_ADDR14:
4581 case R_PPC64_ADDR14_BRNTAKEN:
4582 case R_PPC64_ADDR14_BRTAKEN:
4583 case R_PPC64_ADDR16:
4584 case R_PPC64_ADDR16_DS:
4585 case R_PPC64_ADDR16_HA:
4586 case R_PPC64_ADDR16_HI:
4587 case R_PPC64_ADDR16_HIGHER:
4588 case R_PPC64_ADDR16_HIGHERA:
4589 case R_PPC64_ADDR16_HIGHEST:
4590 case R_PPC64_ADDR16_HIGHESTA:
4591 case R_PPC64_ADDR16_LO:
4592 case R_PPC64_ADDR16_LO_DS:
4593 case R_PPC64_ADDR24:
4594 case R_PPC64_ADDR32:
4595 case R_PPC64_UADDR16:
4596 case R_PPC64_UADDR32:
4597 case R_PPC64_UADDR64:
4599 if (h != NULL && !info->shared)
4600 /* We may need a copy reloc. */
4603 /* Don't propagate .opd relocs. */
4604 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4607 /* If we are creating a shared library, and this is a reloc
4608 against a global symbol, or a non PC relative reloc
4609 against a local symbol, then we need to copy the reloc
4610 into the shared library. However, if we are linking with
4611 -Bsymbolic, we do not need to copy a reloc against a
4612 global symbol which is defined in an object we are
4613 including in the link (i.e., DEF_REGULAR is set). At
4614 this point we have not seen all the input files, so it is
4615 possible that DEF_REGULAR is not set now but will be set
4616 later (it is never cleared). In case of a weak definition,
4617 DEF_REGULAR may be cleared later by a strong definition in
4618 a shared library. We account for that possibility below by
4619 storing information in the dyn_relocs field of the hash
4620 table entry. A similar situation occurs when creating
4621 shared libraries and symbol visibility changes render the
4624 If on the other hand, we are creating an executable, we
4625 may need to keep relocations for symbols satisfied by a
4626 dynamic library if we manage to avoid copy relocs for the
4630 && (MUST_BE_DYN_RELOC (r_type)
4632 && (! info->symbolic
4633 || h->root.type == bfd_link_hash_defweak
4634 || !h->def_regular))))
4635 || (ELIMINATE_COPY_RELOCS
4638 && (h->root.type == bfd_link_hash_defweak
4639 || !h->def_regular)))
4641 struct ppc_dyn_relocs *p;
4642 struct ppc_dyn_relocs **head;
4644 /* We must copy these reloc types into the output file.
4645 Create a reloc section in dynobj and make room for
4652 name = (bfd_elf_string_from_elf_section
4654 elf_elfheader (abfd)->e_shstrndx,
4655 elf_section_data (sec)->rel_hdr.sh_name));
4659 if (strncmp (name, ".rela", 5) != 0
4660 || strcmp (bfd_get_section_name (abfd, sec),
4663 (*_bfd_error_handler)
4664 (_("%B: bad relocation section name `%s\'"),
4666 bfd_set_error (bfd_error_bad_value);
4669 dynobj = htab->elf.dynobj;
4670 sreloc = bfd_get_section_by_name (dynobj, name);
4675 sreloc = bfd_make_section (dynobj, name);
4676 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4677 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4678 if ((sec->flags & SEC_ALLOC) != 0)
4679 flags |= SEC_ALLOC | SEC_LOAD;
4681 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4682 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4685 elf_section_data (sec)->sreloc = sreloc;
4688 /* If this is a global symbol, we count the number of
4689 relocations we need for this symbol. */
4692 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4696 /* Track dynamic relocs needed for local syms too.
4697 We really need local syms available to do this
4701 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4706 head = ((struct ppc_dyn_relocs **)
4707 &elf_section_data (s)->local_dynrel);
4711 if (p == NULL || p->sec != sec)
4713 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4724 if (!MUST_BE_DYN_RELOC (r_type))
4737 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4738 of the code entry point, and its section. */
4741 opd_entry_value (asection *opd_sec,
4743 asection **code_sec,
4746 bfd *opd_bfd = opd_sec->owner;
4747 Elf_Internal_Rela *relocs;
4748 Elf_Internal_Rela *lo, *hi, *look;
4751 /* No relocs implies we are linking a --just-symbols object. */
4752 if (opd_sec->reloc_count == 0)
4756 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4757 return (bfd_vma) -1;
4759 if (code_sec != NULL)
4761 asection *sec, *likely = NULL;
4762 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4764 && (sec->flags & SEC_LOAD) != 0
4765 && (sec->flags & SEC_ALLOC) != 0)
4770 if (code_off != NULL)
4771 *code_off = val - likely->vma;
4777 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4779 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4781 /* Go find the opd reloc at the sym address. */
4783 BFD_ASSERT (lo != NULL);
4784 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4788 look = lo + (hi - lo) / 2;
4789 if (look->r_offset < offset)
4791 else if (look->r_offset > offset)
4795 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4796 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4797 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4799 unsigned long symndx = ELF64_R_SYM (look->r_info);
4802 if (symndx < symtab_hdr->sh_info)
4804 Elf_Internal_Sym *sym;
4806 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4809 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4810 symtab_hdr->sh_info,
4811 0, NULL, NULL, NULL);
4814 symtab_hdr->contents = (bfd_byte *) sym;
4818 val = sym->st_value;
4820 if ((sym->st_shndx != SHN_UNDEF
4821 && sym->st_shndx < SHN_LORESERVE)
4822 || sym->st_shndx > SHN_HIRESERVE)
4823 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4824 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4828 struct elf_link_hash_entry **sym_hashes;
4829 struct elf_link_hash_entry *rh;
4831 sym_hashes = elf_sym_hashes (opd_bfd);
4832 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4833 while (rh->root.type == bfd_link_hash_indirect
4834 || rh->root.type == bfd_link_hash_warning)
4835 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4836 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4837 || rh->root.type == bfd_link_hash_defweak);
4838 val = rh->root.u.def.value;
4839 sec = rh->root.u.def.section;
4841 val += look->r_addend;
4842 if (code_off != NULL)
4844 if (code_sec != NULL)
4846 if (sec != NULL && sec->output_section != NULL)
4847 val += sec->output_section->vma + sec->output_offset;
4856 /* Return the section that should be marked against GC for a given
4860 ppc64_elf_gc_mark_hook (asection *sec,
4861 struct bfd_link_info *info,
4862 Elf_Internal_Rela *rel,
4863 struct elf_link_hash_entry *h,
4864 Elf_Internal_Sym *sym)
4868 /* First mark all our entry sym sections. */
4869 if (info->gc_sym_list != NULL)
4871 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4872 struct bfd_sym_chain *sym = info->gc_sym_list;
4874 info->gc_sym_list = NULL;
4877 struct ppc_link_hash_entry *eh;
4879 eh = (struct ppc_link_hash_entry *)
4880 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4883 if (eh->elf.root.type != bfd_link_hash_defined
4884 && eh->elf.root.type != bfd_link_hash_defweak)
4887 if (eh->is_func_descriptor)
4888 rsec = eh->oh->elf.root.u.def.section;
4889 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4890 && opd_entry_value (eh->elf.root.u.def.section,
4891 eh->elf.root.u.def.value,
4892 &rsec, NULL) != (bfd_vma) -1)
4898 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4900 rsec = eh->elf.root.u.def.section;
4902 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4906 while (sym != NULL);
4909 /* Syms return NULL if we're marking .opd, so we avoid marking all
4910 function sections, as all functions are referenced in .opd. */
4912 if (get_opd_info (sec) != NULL)
4917 enum elf_ppc64_reloc_type r_type;
4918 struct ppc_link_hash_entry *eh;
4920 r_type = ELF64_R_TYPE (rel->r_info);
4923 case R_PPC64_GNU_VTINHERIT:
4924 case R_PPC64_GNU_VTENTRY:
4928 switch (h->root.type)
4930 case bfd_link_hash_defined:
4931 case bfd_link_hash_defweak:
4932 eh = (struct ppc_link_hash_entry *) h;
4933 if (eh->oh != NULL && eh->oh->is_func_descriptor)
4936 /* Function descriptor syms cause the associated
4937 function code sym section to be marked. */
4938 if (eh->is_func_descriptor)
4940 /* They also mark their opd section. */
4941 if (!eh->elf.root.u.def.section->gc_mark)
4942 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4943 ppc64_elf_gc_mark_hook);
4945 rsec = eh->oh->elf.root.u.def.section;
4947 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4948 && opd_entry_value (eh->elf.root.u.def.section,
4949 eh->elf.root.u.def.value,
4950 &rsec, NULL) != (bfd_vma) -1)
4952 if (!eh->elf.root.u.def.section->gc_mark)
4953 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4954 ppc64_elf_gc_mark_hook);
4957 rsec = h->root.u.def.section;
4960 case bfd_link_hash_common:
4961 rsec = h->root.u.c.p->section;
4971 asection **opd_sym_section;
4973 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4974 opd_sym_section = get_opd_info (rsec);
4975 if (opd_sym_section != NULL)
4978 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4980 rsec = opd_sym_section[sym->st_value / 8];
4987 /* Update the .got, .plt. and dynamic reloc reference counts for the
4988 section being removed. */
4991 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4992 asection *sec, const Elf_Internal_Rela *relocs)
4994 struct ppc_link_hash_table *htab;
4995 Elf_Internal_Shdr *symtab_hdr;
4996 struct elf_link_hash_entry **sym_hashes;
4997 struct got_entry **local_got_ents;
4998 const Elf_Internal_Rela *rel, *relend;
5000 if ((sec->flags & SEC_ALLOC) == 0)
5003 elf_section_data (sec)->local_dynrel = NULL;
5005 htab = ppc_hash_table (info);
5006 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5007 sym_hashes = elf_sym_hashes (abfd);
5008 local_got_ents = elf_local_got_ents (abfd);
5010 relend = relocs + sec->reloc_count;
5011 for (rel = relocs; rel < relend; rel++)
5013 unsigned long r_symndx;
5014 enum elf_ppc64_reloc_type r_type;
5015 struct elf_link_hash_entry *h = NULL;
5018 r_symndx = ELF64_R_SYM (rel->r_info);
5019 r_type = ELF64_R_TYPE (rel->r_info);
5020 if (r_symndx >= symtab_hdr->sh_info)
5022 struct ppc_link_hash_entry *eh;
5023 struct ppc_dyn_relocs **pp;
5024 struct ppc_dyn_relocs *p;
5026 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5027 while (h->root.type == bfd_link_hash_indirect
5028 || h->root.type == bfd_link_hash_warning)
5029 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5030 eh = (struct ppc_link_hash_entry *) h;
5032 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5035 /* Everything must go for SEC. */
5043 case R_PPC64_GOT_TLSLD16:
5044 case R_PPC64_GOT_TLSLD16_LO:
5045 case R_PPC64_GOT_TLSLD16_HI:
5046 case R_PPC64_GOT_TLSLD16_HA:
5047 ppc64_tlsld_got (abfd)->refcount -= 1;
5048 tls_type = TLS_TLS | TLS_LD;
5051 case R_PPC64_GOT_TLSGD16:
5052 case R_PPC64_GOT_TLSGD16_LO:
5053 case R_PPC64_GOT_TLSGD16_HI:
5054 case R_PPC64_GOT_TLSGD16_HA:
5055 tls_type = TLS_TLS | TLS_GD;
5058 case R_PPC64_GOT_TPREL16_DS:
5059 case R_PPC64_GOT_TPREL16_LO_DS:
5060 case R_PPC64_GOT_TPREL16_HI:
5061 case R_PPC64_GOT_TPREL16_HA:
5062 tls_type = TLS_TLS | TLS_TPREL;
5065 case R_PPC64_GOT_DTPREL16_DS:
5066 case R_PPC64_GOT_DTPREL16_LO_DS:
5067 case R_PPC64_GOT_DTPREL16_HI:
5068 case R_PPC64_GOT_DTPREL16_HA:
5069 tls_type = TLS_TLS | TLS_DTPREL;
5073 case R_PPC64_GOT16_DS:
5074 case R_PPC64_GOT16_HA:
5075 case R_PPC64_GOT16_HI:
5076 case R_PPC64_GOT16_LO:
5077 case R_PPC64_GOT16_LO_DS:
5080 struct got_entry *ent;
5085 ent = local_got_ents[r_symndx];
5087 for (; ent != NULL; ent = ent->next)
5088 if (ent->addend == rel->r_addend
5089 && ent->owner == abfd
5090 && ent->tls_type == tls_type)
5094 if (ent->got.refcount > 0)
5095 ent->got.refcount -= 1;
5099 case R_PPC64_PLT16_HA:
5100 case R_PPC64_PLT16_HI:
5101 case R_PPC64_PLT16_LO:
5105 case R_PPC64_REL14_BRNTAKEN:
5106 case R_PPC64_REL14_BRTAKEN:
5110 struct plt_entry *ent;
5112 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5113 if (ent->addend == rel->r_addend)
5117 if (ent->plt.refcount > 0)
5118 ent->plt.refcount -= 1;
5129 /* The maximum size of .sfpr. */
5130 #define SFPR_MAX (218*4)
5132 struct sfpr_def_parms
5134 const char name[12];
5135 unsigned char lo, hi;
5136 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5137 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5140 /* Auto-generate _save*, _rest* functions in .sfpr. */
5143 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5145 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5147 size_t len = strlen (parm->name);
5148 bfd_boolean writing = FALSE;
5151 memcpy (sym, parm->name, len);
5154 for (i = parm->lo; i <= parm->hi; i++)
5156 struct elf_link_hash_entry *h;
5158 sym[len + 0] = i / 10 + '0';
5159 sym[len + 1] = i % 10 + '0';
5160 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5164 h->root.type = bfd_link_hash_defined;
5165 h->root.u.def.section = htab->sfpr;
5166 h->root.u.def.value = htab->sfpr->size;
5169 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5171 if (htab->sfpr->contents == NULL)
5173 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5174 if (htab->sfpr->contents == NULL)
5180 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5182 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5184 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5185 htab->sfpr->size = p - htab->sfpr->contents;
5193 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5195 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5200 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5202 p = savegpr0 (abfd, p, r);
5203 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5205 bfd_put_32 (abfd, BLR, p);
5210 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5212 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5217 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5219 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5221 p = restgpr0 (abfd, p, r);
5222 bfd_put_32 (abfd, MTLR_R0, p);
5226 p = restgpr0 (abfd, p, 30);
5227 p = restgpr0 (abfd, p, 31);
5229 bfd_put_32 (abfd, BLR, p);
5234 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5236 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5241 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5243 p = savegpr1 (abfd, p, r);
5244 bfd_put_32 (abfd, BLR, p);
5249 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5251 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5256 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5258 p = restgpr1 (abfd, p, r);
5259 bfd_put_32 (abfd, BLR, p);
5264 savefpr (bfd *abfd, bfd_byte *p, int r)
5266 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5271 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5273 p = savefpr (abfd, p, r);
5274 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5276 bfd_put_32 (abfd, BLR, p);
5281 restfpr (bfd *abfd, bfd_byte *p, int r)
5283 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5288 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5290 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5292 p = restfpr (abfd, p, r);
5293 bfd_put_32 (abfd, MTLR_R0, p);
5297 p = restfpr (abfd, p, 30);
5298 p = restfpr (abfd, p, 31);
5300 bfd_put_32 (abfd, BLR, p);
5305 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5307 p = savefpr (abfd, p, r);
5308 bfd_put_32 (abfd, BLR, p);
5313 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5315 p = restfpr (abfd, p, r);
5316 bfd_put_32 (abfd, BLR, p);
5321 savevr (bfd *abfd, bfd_byte *p, int r)
5323 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5325 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5330 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5332 p = savevr (abfd, p, r);
5333 bfd_put_32 (abfd, BLR, p);
5338 restvr (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, LVX_VR0_R12_R0 + (r << 21), p);
5347 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5349 p = restvr (abfd, p, r);
5350 bfd_put_32 (abfd, BLR, p);
5354 /* Called via elf_link_hash_traverse to transfer dynamic linking
5355 information on function code symbol entries to their corresponding
5356 function descriptor symbol entries. */
5359 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5361 struct bfd_link_info *info;
5362 struct ppc_link_hash_table *htab;
5363 struct plt_entry *ent;
5364 struct ppc_link_hash_entry *fh;
5365 struct ppc_link_hash_entry *fdh;
5366 bfd_boolean force_local;
5368 fh = (struct ppc_link_hash_entry *) h;
5369 if (fh->elf.root.type == bfd_link_hash_indirect)
5372 if (fh->elf.root.type == bfd_link_hash_warning)
5373 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5376 htab = ppc_hash_table (info);
5378 /* Resolve undefined references to dot-symbols as the value
5379 in the function descriptor, if we have one in a regular object.
5380 This is to satisfy cases like ".quad .foo". Calls to functions
5381 in dynamic objects are handled elsewhere. */
5382 if (fh->elf.root.type == bfd_link_hash_undefweak
5383 && fh->was_undefined
5384 && (fh->oh->elf.root.type == bfd_link_hash_defined
5385 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5386 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5387 && opd_entry_value (fh->oh->elf.root.u.def.section,
5388 fh->oh->elf.root.u.def.value,
5389 &fh->elf.root.u.def.section,
5390 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5392 fh->elf.root.type = fh->oh->elf.root.type;
5393 fh->elf.forced_local = 1;
5396 /* If this is a function code symbol, transfer dynamic linking
5397 information to the function descriptor symbol. */
5401 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5402 if (ent->plt.refcount > 0)
5405 || fh->elf.root.root.string[0] != '.'
5406 || fh->elf.root.root.string[1] == '\0')
5409 /* Find the corresponding function descriptor symbol. Create it
5410 as undefined if necessary. */
5412 fdh = get_fdh (fh, htab);
5414 while (fdh->elf.root.type == bfd_link_hash_indirect
5415 || fdh->elf.root.type == bfd_link_hash_warning)
5416 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5420 && (fh->elf.root.type == bfd_link_hash_undefined
5421 || fh->elf.root.type == bfd_link_hash_undefweak))
5423 fdh = make_fdh (info, fh);
5428 /* Fake function descriptors are made undefweak. If the function
5429 code symbol is strong undefined, make the fake sym the same. */
5433 && fdh->elf.root.type == bfd_link_hash_undefweak
5434 && fh->elf.root.type == bfd_link_hash_undefined)
5436 fdh->elf.root.type = bfd_link_hash_undefined;
5437 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5441 && !fdh->elf.forced_local
5443 || fdh->elf.def_dynamic
5444 || fdh->elf.ref_dynamic
5445 || (fdh->elf.root.type == bfd_link_hash_undefweak
5446 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5448 if (fdh->elf.dynindx == -1)
5449 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5451 fdh->elf.ref_regular |= fh->elf.ref_regular;
5452 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5453 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5454 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
5455 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5457 struct plt_entry **ep = &fdh->elf.plt.plist;
5460 *ep = fh->elf.plt.plist;
5461 fh->elf.plt.plist = NULL;
5462 fdh->elf.needs_plt = 1;
5464 fdh->is_func_descriptor = 1;
5469 /* Now that the info is on the function descriptor, clear the
5470 function code sym info. Any function code syms for which we
5471 don't have a definition in a regular file, we force local.
5472 This prevents a shared library from exporting syms that have
5473 been imported from another library. Function code syms that
5474 are really in the library we must leave global to prevent the
5475 linker dragging in a definition from a static library. */
5478 && (!fh->elf.def_regular
5480 || !fdh->elf.def_regular
5481 || fdh->elf.forced_local));
5482 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5487 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5488 this hook to a) provide some gcc support functions, and b) transfer
5489 dynamic linking information gathered so far on function code symbol
5490 entries, to their corresponding function descriptor symbol entries. */
5493 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5494 struct bfd_link_info *info)
5496 struct ppc_link_hash_table *htab;
5498 const struct sfpr_def_parms funcs[] =
5500 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5501 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5502 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5503 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5504 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5505 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5506 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5507 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5508 { "._savef", 14, 31, savefpr, savefpr1_tail },
5509 { "._restf", 14, 31, restfpr, restfpr1_tail },
5510 { "_savevr_", 20, 31, savevr, savevr_tail },
5511 { "_restvr_", 20, 31, restvr, restvr_tail }
5514 htab = ppc_hash_table (info);
5515 if (htab->sfpr == NULL)
5516 /* We don't have any relocs. */
5519 /* Provide any missing _save* and _rest* functions. */
5520 htab->sfpr->size = 0;
5521 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5522 if (!sfpr_define (info, &funcs[i]))
5525 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5527 if (htab->sfpr->size == 0)
5528 _bfd_strip_section_from_output (info, htab->sfpr);
5533 /* Adjust a symbol defined by a dynamic object and referenced by a
5534 regular object. The current definition is in some section of the
5535 dynamic object, but we're not including those sections. We have to
5536 change the definition to something the rest of the link can
5540 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5541 struct elf_link_hash_entry *h)
5543 struct ppc_link_hash_table *htab;
5545 unsigned int power_of_two;
5547 htab = ppc_hash_table (info);
5549 /* Deal with function syms. */
5550 if (h->type == STT_FUNC
5553 /* Clear procedure linkage table information for any symbol that
5554 won't need a .plt entry. */
5555 struct plt_entry *ent;
5556 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5557 if (ent->plt.refcount > 0)
5560 || SYMBOL_CALLS_LOCAL (info, h)
5561 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5562 && h->root.type == bfd_link_hash_undefweak))
5564 h->plt.plist = NULL;
5569 h->plt.plist = NULL;
5571 /* If this is a weak symbol, and there is a real definition, the
5572 processor independent code will have arranged for us to see the
5573 real definition first, and we can just use the same value. */
5574 if (h->u.weakdef != NULL)
5576 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5577 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5578 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5579 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5580 if (ELIMINATE_COPY_RELOCS)
5581 h->non_got_ref = h->u.weakdef->non_got_ref;
5585 /* If we are creating a shared library, we must presume that the
5586 only references to the symbol are via the global offset table.
5587 For such cases we need not do anything here; the relocations will
5588 be handled correctly by relocate_section. */
5592 /* If there are no references to this symbol that do not use the
5593 GOT, we don't need to generate a copy reloc. */
5594 if (!h->non_got_ref)
5597 if (ELIMINATE_COPY_RELOCS)
5599 struct ppc_link_hash_entry * eh;
5600 struct ppc_dyn_relocs *p;
5602 eh = (struct ppc_link_hash_entry *) h;
5603 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5605 s = p->sec->output_section;
5606 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5610 /* If we didn't find any dynamic relocs in read-only sections, then
5611 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5619 if (h->plt.plist != NULL)
5621 /* We should never get here, but unfortunately there are versions
5622 of gcc out there that improperly (for this ABI) put initialized
5623 function pointers, vtable refs and suchlike in read-only
5624 sections. Allow them to proceed, but warn that this might
5625 break at runtime. */
5626 (*_bfd_error_handler)
5627 (_("copy reloc against `%s' requires lazy plt linking; "
5628 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5629 h->root.root.string);
5632 /* This is a reference to a symbol defined by a dynamic object which
5633 is not a function. */
5635 /* We must allocate the symbol in our .dynbss section, which will
5636 become part of the .bss section of the executable. There will be
5637 an entry for this symbol in the .dynsym section. The dynamic
5638 object will contain position independent code, so all references
5639 from the dynamic object to this symbol will go through the global
5640 offset table. The dynamic linker will use the .dynsym entry to
5641 determine the address it must put in the global offset table, so
5642 both the dynamic object and the regular object will refer to the
5643 same memory location for the variable. */
5645 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5646 to copy the initial value out of the dynamic object and into the
5647 runtime process image. We need to remember the offset into the
5648 .rela.bss section we are going to use. */
5649 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5651 htab->relbss->size += sizeof (Elf64_External_Rela);
5655 /* We need to figure out the alignment required for this symbol. I
5656 have no idea how ELF linkers handle this. */
5657 power_of_two = bfd_log2 (h->size);
5658 if (power_of_two > 4)
5661 /* Apply the required alignment. */
5663 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5664 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5666 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5670 /* Define the symbol as being at this point in the section. */
5671 h->root.u.def.section = s;
5672 h->root.u.def.value = s->size;
5674 /* Increment the section size to make room for the symbol. */
5680 /* If given a function descriptor symbol, hide both the function code
5681 sym and the descriptor. */
5683 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5684 struct elf_link_hash_entry *h,
5685 bfd_boolean force_local)
5687 struct ppc_link_hash_entry *eh;
5688 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5690 eh = (struct ppc_link_hash_entry *) h;
5691 if (eh->is_func_descriptor)
5693 struct ppc_link_hash_entry *fh = eh->oh;
5698 struct ppc_link_hash_table *htab;
5701 /* We aren't supposed to use alloca in BFD because on
5702 systems which do not have alloca the version in libiberty
5703 calls xmalloc, which might cause the program to crash
5704 when it runs out of memory. This function doesn't have a
5705 return status, so there's no way to gracefully return an
5706 error. So cheat. We know that string[-1] can be safely
5707 accessed; It's either a string in an ELF string table,
5708 or allocated in an objalloc structure. */
5710 p = eh->elf.root.root.string - 1;
5713 htab = ppc_hash_table (info);
5714 fh = (struct ppc_link_hash_entry *)
5715 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5718 /* Unfortunately, if it so happens that the string we were
5719 looking for was allocated immediately before this string,
5720 then we overwrote the string terminator. That's the only
5721 reason the lookup should fail. */
5724 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5725 while (q >= eh->elf.root.root.string && *q == *p)
5727 if (q < eh->elf.root.root.string && *p == '.')
5728 fh = (struct ppc_link_hash_entry *)
5729 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5738 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5743 get_sym_h (struct elf_link_hash_entry **hp,
5744 Elf_Internal_Sym **symp,
5747 Elf_Internal_Sym **locsymsp,
5748 unsigned long r_symndx,
5751 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5753 if (r_symndx >= symtab_hdr->sh_info)
5755 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5756 struct elf_link_hash_entry *h;
5758 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5759 while (h->root.type == bfd_link_hash_indirect
5760 || h->root.type == bfd_link_hash_warning)
5761 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5769 if (symsecp != NULL)
5771 asection *symsec = NULL;
5772 if (h->root.type == bfd_link_hash_defined
5773 || h->root.type == bfd_link_hash_defweak)
5774 symsec = h->root.u.def.section;
5778 if (tls_maskp != NULL)
5780 struct ppc_link_hash_entry *eh;
5782 eh = (struct ppc_link_hash_entry *) h;
5783 *tls_maskp = &eh->tls_mask;
5788 Elf_Internal_Sym *sym;
5789 Elf_Internal_Sym *locsyms = *locsymsp;
5791 if (locsyms == NULL)
5793 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5794 if (locsyms == NULL)
5795 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5796 symtab_hdr->sh_info,
5797 0, NULL, NULL, NULL);
5798 if (locsyms == NULL)
5800 *locsymsp = locsyms;
5802 sym = locsyms + r_symndx;
5810 if (symsecp != NULL)
5812 asection *symsec = NULL;
5813 if ((sym->st_shndx != SHN_UNDEF
5814 && sym->st_shndx < SHN_LORESERVE)
5815 || sym->st_shndx > SHN_HIRESERVE)
5816 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5820 if (tls_maskp != NULL)
5822 struct got_entry **lgot_ents;
5826 lgot_ents = elf_local_got_ents (ibfd);
5827 if (lgot_ents != NULL)
5829 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5830 tls_mask = &lgot_masks[r_symndx];
5832 *tls_maskp = tls_mask;
5838 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5839 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5840 type suitable for optimization, and 1 otherwise. */
5843 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5844 Elf_Internal_Sym **locsymsp,
5845 const Elf_Internal_Rela *rel, bfd *ibfd)
5847 unsigned long r_symndx;
5849 struct elf_link_hash_entry *h;
5850 Elf_Internal_Sym *sym;
5854 r_symndx = ELF64_R_SYM (rel->r_info);
5855 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5858 if ((*tls_maskp != NULL && **tls_maskp != 0)
5860 || ppc64_elf_section_data (sec)->t_symndx == NULL)
5863 /* Look inside a TOC section too. */
5866 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5867 off = h->root.u.def.value;
5870 off = sym->st_value;
5871 off += rel->r_addend;
5872 BFD_ASSERT (off % 8 == 0);
5873 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
5874 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
5875 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5877 if (toc_symndx != NULL)
5878 *toc_symndx = r_symndx;
5880 || ((h->root.type == bfd_link_hash_defined
5881 || h->root.type == bfd_link_hash_defweak)
5882 && !h->def_dynamic))
5883 && (next_r == -1 || next_r == -2))
5888 /* Adjust all global syms defined in opd sections. In gcc generated
5889 code for the old ABI, these will already have been done. */
5892 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5894 struct ppc_link_hash_entry *eh;
5898 if (h->root.type == bfd_link_hash_indirect)
5901 if (h->root.type == bfd_link_hash_warning)
5902 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5904 if (h->root.type != bfd_link_hash_defined
5905 && h->root.type != bfd_link_hash_defweak)
5908 eh = (struct ppc_link_hash_entry *) h;
5909 if (eh->adjust_done)
5912 sym_sec = eh->elf.root.u.def.section;
5913 opd_adjust = get_opd_info (sym_sec);
5914 if (opd_adjust != NULL)
5916 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
5919 /* This entry has been deleted. */
5920 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5923 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5924 if (elf_discarded_section (dsec))
5926 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5930 eh->elf.root.u.def.value = 0;
5931 eh->elf.root.u.def.section = dsec;
5934 eh->elf.root.u.def.value += adjust;
5935 eh->adjust_done = 1;
5940 /* Remove unused Official Procedure Descriptor entries. Currently we
5941 only remove those associated with functions in discarded link-once
5942 sections, or weakly defined functions that have been overridden. It
5943 would be possible to remove many more entries for statically linked
5947 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
5948 bfd_boolean non_overlapping)
5951 bfd_boolean some_edited = FALSE;
5952 asection *need_pad = NULL;
5954 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5957 Elf_Internal_Rela *relstart, *rel, *relend;
5958 Elf_Internal_Shdr *symtab_hdr;
5959 Elf_Internal_Sym *local_syms;
5960 struct elf_link_hash_entry **sym_hashes;
5964 bfd_boolean need_edit, add_aux_fields;
5965 bfd_size_type cnt_16b = 0;
5967 sec = bfd_get_section_by_name (ibfd, ".opd");
5971 amt = sec->size * sizeof (long) / 8;
5972 opd_adjust = get_opd_info (sec);
5973 if (opd_adjust == NULL)
5975 /* check_relocs hasn't been called. Must be a ld -r link
5976 or --just-symbols object. */
5977 opd_adjust = bfd_zalloc (obfd, amt);
5978 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
5980 memset (opd_adjust, 0, amt);
5982 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
5985 if (sec->output_section == bfd_abs_section_ptr)
5988 /* Look through the section relocs. */
5989 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
5993 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5994 sym_hashes = elf_sym_hashes (ibfd);
5996 /* Read the relocations. */
5997 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5999 if (relstart == NULL)
6002 /* First run through the relocs to check they are sane, and to
6003 determine whether we need to edit this opd section. */
6007 relend = relstart + sec->reloc_count;
6008 for (rel = relstart; rel < relend; )
6010 enum elf_ppc64_reloc_type r_type;
6011 unsigned long r_symndx;
6013 struct elf_link_hash_entry *h;
6014 Elf_Internal_Sym *sym;
6016 /* .opd contains a regular array of 16 or 24 byte entries. We're
6017 only interested in the reloc pointing to a function entry
6019 if (rel->r_offset != offset
6020 || rel + 1 >= relend
6021 || (rel + 1)->r_offset != offset + 8)
6023 /* If someone messes with .opd alignment then after a
6024 "ld -r" we might have padding in the middle of .opd.
6025 Also, there's nothing to prevent someone putting
6026 something silly in .opd with the assembler. No .opd
6027 optimization for them! */
6029 (*_bfd_error_handler)
6030 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6035 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6036 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6038 (*_bfd_error_handler)
6039 (_("%B: unexpected reloc type %u in .opd section"),
6045 r_symndx = ELF64_R_SYM (rel->r_info);
6046 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6050 if (sym_sec == NULL || sym_sec->owner == NULL)
6052 const char *sym_name;
6054 sym_name = h->root.root.string;
6056 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym);
6058 (*_bfd_error_handler)
6059 (_("%B: undefined sym `%s' in .opd section"),
6065 /* opd entries are always for functions defined in the
6066 current input bfd. If the symbol isn't defined in the
6067 input bfd, then we won't be using the function in this
6068 bfd; It must be defined in a linkonce section in another
6069 bfd, or is weak. It's also possible that we are
6070 discarding the function due to a linker script /DISCARD/,
6071 which we test for via the output_section. */
6072 if (sym_sec->owner != ibfd
6073 || sym_sec->output_section == bfd_abs_section_ptr)
6078 || (rel + 1 == relend && rel->r_offset == offset + 16))
6080 if (sec->size == offset + 24)
6085 if (rel == relend && sec->size == offset + 16)
6093 if (rel->r_offset == offset + 24)
6095 else if (rel->r_offset != offset + 16)
6097 else if (rel + 1 < relend
6098 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6099 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6104 else if (rel + 2 < relend
6105 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6106 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6115 add_aux_fields = non_overlapping && cnt_16b > 0;
6117 if (need_edit || add_aux_fields)
6119 Elf_Internal_Rela *write_rel;
6120 bfd_byte *rptr, *wptr;
6121 bfd_byte *new_contents = NULL;
6125 /* This seems a waste of time as input .opd sections are all
6126 zeros as generated by gcc, but I suppose there's no reason
6127 this will always be so. We might start putting something in
6128 the third word of .opd entries. */
6129 if ((sec->flags & SEC_IN_MEMORY) == 0)
6132 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6137 if (local_syms != NULL
6138 && symtab_hdr->contents != (unsigned char *) local_syms)
6140 if (elf_section_data (sec)->relocs != relstart)
6144 sec->contents = loc;
6145 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6148 elf_section_data (sec)->relocs = relstart;
6150 wptr = sec->contents;
6151 rptr = sec->contents;
6152 new_contents = sec->contents;
6156 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6157 if (new_contents == NULL)
6160 wptr = new_contents;
6163 write_rel = relstart;
6167 for (rel = relstart; rel < relend; rel++)
6169 unsigned long r_symndx;
6171 struct elf_link_hash_entry *h;
6172 Elf_Internal_Sym *sym;
6174 r_symndx = ELF64_R_SYM (rel->r_info);
6175 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6179 if (rel->r_offset == offset)
6181 struct ppc_link_hash_entry *fdh = NULL;
6183 /* See if the .opd entry is full 24 byte or
6184 16 byte (with fd_aux entry overlapped with next
6187 if ((rel + 2 == relend && sec->size == offset + 16)
6188 || (rel + 3 < relend
6189 && rel[2].r_offset == offset + 16
6190 && rel[3].r_offset == offset + 24
6191 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6192 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6196 && h->root.root.string[0] == '.')
6197 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6198 ppc_hash_table (info));
6200 skip = (sym_sec->owner != ibfd
6201 || sym_sec->output_section == bfd_abs_section_ptr);
6204 if (fdh != NULL && sym_sec->owner == ibfd)
6206 /* Arrange for the function descriptor sym
6208 fdh->elf.root.u.def.value = 0;
6209 fdh->elf.root.u.def.section = sym_sec;
6211 opd_adjust[rel->r_offset / 8] = -1;
6215 /* We'll be keeping this opd entry. */
6219 /* Redefine the function descriptor symbol to
6220 this location in the opd section. It is
6221 necessary to update the value here rather
6222 than using an array of adjustments as we do
6223 for local symbols, because various places
6224 in the generic ELF code use the value
6225 stored in u.def.value. */
6226 fdh->elf.root.u.def.value = wptr - new_contents;
6227 fdh->adjust_done = 1;
6230 /* Local syms are a bit tricky. We could
6231 tweak them as they can be cached, but
6232 we'd need to look through the local syms
6233 for the function descriptor sym which we
6234 don't have at the moment. So keep an
6235 array of adjustments. */
6236 opd_adjust[rel->r_offset / 8]
6237 = (wptr - new_contents) - (rptr - sec->contents);
6240 memcpy (wptr, rptr, opd_ent_size);
6241 wptr += opd_ent_size;
6242 if (add_aux_fields && opd_ent_size == 16)
6244 memset (wptr, '\0', 8);
6248 rptr += opd_ent_size;
6249 offset += opd_ent_size;
6254 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
6257 /* We won't be needing dynamic relocs here. */
6258 struct ppc_dyn_relocs **pp;
6259 struct ppc_dyn_relocs *p;
6262 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6263 else if (sym_sec != NULL)
6264 pp = ((struct ppc_dyn_relocs **)
6265 &elf_section_data (sym_sec)->local_dynrel);
6267 pp = ((struct ppc_dyn_relocs **)
6268 &elf_section_data (sec)->local_dynrel);
6269 while ((p = *pp) != NULL)
6284 /* We need to adjust any reloc offsets to point to the
6285 new opd entries. While we're at it, we may as well
6286 remove redundant relocs. */
6287 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6288 if (write_rel != rel)
6289 memcpy (write_rel, rel, sizeof (*rel));
6294 sec->size = wptr - new_contents;
6295 sec->reloc_count = write_rel - relstart;
6298 free (sec->contents);
6299 sec->contents = new_contents;
6302 /* Fudge the size too, as this is used later in
6303 elf_bfd_final_link if we are emitting relocs. */
6304 elf_section_data (sec)->rel_hdr.sh_size
6305 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6306 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6309 else if (elf_section_data (sec)->relocs != relstart)
6312 if (local_syms != NULL
6313 && symtab_hdr->contents != (unsigned char *) local_syms)
6315 if (!info->keep_memory)
6318 symtab_hdr->contents = (unsigned char *) local_syms;
6323 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6325 /* If we are doing a final link and the last .opd entry is just 16 byte
6326 long, add a 8 byte padding after it. */
6327 if (need_pad != NULL && !info->relocatable)
6331 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6333 BFD_ASSERT (need_pad->size > 0);
6335 p = bfd_malloc (need_pad->size + 8);
6339 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6340 p, 0, need_pad->size))
6343 need_pad->contents = p;
6344 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6348 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6352 need_pad->contents = p;
6355 memset (need_pad->contents + need_pad->size, 0, 8);
6356 need_pad->size += 8;
6362 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6365 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6367 struct ppc_link_hash_table *htab;
6369 htab = ppc_hash_table (info);
6370 if (htab->tls_get_addr != NULL)
6372 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6374 while (h->elf.root.type == bfd_link_hash_indirect
6375 || h->elf.root.type == bfd_link_hash_warning)
6376 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6378 htab->tls_get_addr = h;
6380 if (htab->tls_get_addr_fd == NULL
6382 && h->oh->is_func_descriptor)
6383 htab->tls_get_addr_fd = h->oh;
6386 if (htab->tls_get_addr_fd != NULL)
6388 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6390 while (h->elf.root.type == bfd_link_hash_indirect
6391 || h->elf.root.type == bfd_link_hash_warning)
6392 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6394 htab->tls_get_addr_fd = h;
6397 return _bfd_elf_tls_setup (obfd, info);
6400 /* Run through all the TLS relocs looking for optimization
6401 opportunities. The linker has been hacked (see ppc64elf.em) to do
6402 a preliminary section layout so that we know the TLS segment
6403 offsets. We can't optimize earlier because some optimizations need
6404 to know the tp offset, and we need to optimize before allocating
6405 dynamic relocations. */
6408 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6412 struct ppc_link_hash_table *htab;
6414 if (info->relocatable || info->shared)
6417 htab = ppc_hash_table (info);
6418 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6420 Elf_Internal_Sym *locsyms = NULL;
6422 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6423 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6425 Elf_Internal_Rela *relstart, *rel, *relend;
6426 int expecting_tls_get_addr;
6428 /* Read the relocations. */
6429 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6431 if (relstart == NULL)
6434 expecting_tls_get_addr = 0;
6435 relend = relstart + sec->reloc_count;
6436 for (rel = relstart; rel < relend; rel++)
6438 enum elf_ppc64_reloc_type r_type;
6439 unsigned long r_symndx;
6440 struct elf_link_hash_entry *h;
6441 Elf_Internal_Sym *sym;
6444 char tls_set, tls_clear, tls_type = 0;
6446 bfd_boolean ok_tprel, is_local;
6448 r_symndx = ELF64_R_SYM (rel->r_info);
6449 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6453 if (elf_section_data (sec)->relocs != relstart)
6456 && (elf_tdata (ibfd)->symtab_hdr.contents
6457 != (unsigned char *) locsyms))
6464 if (h->root.type != bfd_link_hash_defined
6465 && h->root.type != bfd_link_hash_defweak)
6467 value = h->root.u.def.value;
6470 /* Symbols referenced by TLS relocs must be of type
6471 STT_TLS. So no need for .opd local sym adjust. */
6472 value = sym->st_value;
6480 value += sym_sec->output_offset;
6481 value += sym_sec->output_section->vma;
6482 value -= htab->elf.tls_sec->vma;
6483 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6484 < (bfd_vma) 1 << 32);
6487 r_type = ELF64_R_TYPE (rel->r_info);
6490 case R_PPC64_GOT_TLSLD16:
6491 case R_PPC64_GOT_TLSLD16_LO:
6492 case R_PPC64_GOT_TLSLD16_HI:
6493 case R_PPC64_GOT_TLSLD16_HA:
6494 /* These relocs should never be against a symbol
6495 defined in a shared lib. Leave them alone if
6496 that turns out to be the case. */
6497 ppc64_tlsld_got (ibfd)->refcount -= 1;
6504 tls_type = TLS_TLS | TLS_LD;
6505 expecting_tls_get_addr = 1;
6508 case R_PPC64_GOT_TLSGD16:
6509 case R_PPC64_GOT_TLSGD16_LO:
6510 case R_PPC64_GOT_TLSGD16_HI:
6511 case R_PPC64_GOT_TLSGD16_HA:
6517 tls_set = TLS_TLS | TLS_TPRELGD;
6519 tls_type = TLS_TLS | TLS_GD;
6520 expecting_tls_get_addr = 1;
6523 case R_PPC64_GOT_TPREL16_DS:
6524 case R_PPC64_GOT_TPREL16_LO_DS:
6525 case R_PPC64_GOT_TPREL16_HI:
6526 case R_PPC64_GOT_TPREL16_HA:
6527 expecting_tls_get_addr = 0;
6532 tls_clear = TLS_TPREL;
6533 tls_type = TLS_TLS | TLS_TPREL;
6540 case R_PPC64_REL14_BRTAKEN:
6541 case R_PPC64_REL14_BRNTAKEN:
6544 && (h == &htab->tls_get_addr->elf
6545 || h == &htab->tls_get_addr_fd->elf))
6547 if (!expecting_tls_get_addr
6549 && ((ELF64_R_TYPE (rel[-1].r_info)
6551 || (ELF64_R_TYPE (rel[-1].r_info)
6552 == R_PPC64_TOC16_LO)))
6554 /* Check for toc tls entries. */
6558 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6562 if (toc_tls != NULL)
6563 expecting_tls_get_addr = retval > 1;
6566 if (expecting_tls_get_addr)
6568 struct plt_entry *ent;
6569 for (ent = h->plt.plist; ent; ent = ent->next)
6570 if (ent->addend == 0)
6572 if (ent->plt.refcount > 0)
6573 ent->plt.refcount -= 1;
6578 expecting_tls_get_addr = 0;
6581 case R_PPC64_TPREL64:
6582 expecting_tls_get_addr = 0;
6586 tls_set = TLS_EXPLICIT;
6587 tls_clear = TLS_TPREL;
6593 case R_PPC64_DTPMOD64:
6594 expecting_tls_get_addr = 0;
6595 if (rel + 1 < relend
6597 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6598 && rel[1].r_offset == rel->r_offset + 8)
6602 tls_set = TLS_EXPLICIT | TLS_GD;
6605 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6614 tls_set = TLS_EXPLICIT;
6620 expecting_tls_get_addr = 0;
6624 if ((tls_set & TLS_EXPLICIT) == 0)
6626 struct got_entry *ent;
6628 /* Adjust got entry for this reloc. */
6632 ent = elf_local_got_ents (ibfd)[r_symndx];
6634 for (; ent != NULL; ent = ent->next)
6635 if (ent->addend == rel->r_addend
6636 && ent->owner == ibfd
6637 && ent->tls_type == tls_type)
6644 /* We managed to get rid of a got entry. */
6645 if (ent->got.refcount > 0)
6646 ent->got.refcount -= 1;
6651 struct ppc_link_hash_entry * eh;
6652 struct ppc_dyn_relocs **pp;
6653 struct ppc_dyn_relocs *p;
6655 /* Adjust dynamic relocs. */
6656 eh = (struct ppc_link_hash_entry *) h;
6657 for (pp = &eh->dyn_relocs;
6662 /* If we got rid of a DTPMOD/DTPREL reloc
6663 pair then we'll lose one or two dyn
6665 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6674 *tls_mask |= tls_set;
6675 *tls_mask &= ~tls_clear;
6678 if (elf_section_data (sec)->relocs != relstart)
6683 && (elf_tdata (ibfd)->symtab_hdr.contents
6684 != (unsigned char *) locsyms))
6686 if (!info->keep_memory)
6689 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6695 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6696 the values of any global symbols in a toc section that has been
6697 edited. Globals in toc sections should be a rarity, so this function
6698 sets a flag if any are found in toc sections other than the one just
6699 edited, so that futher hash table traversals can be avoided. */
6701 struct adjust_toc_info
6704 unsigned long *skip;
6705 bfd_boolean global_toc_syms;
6709 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6711 struct ppc_link_hash_entry *eh;
6712 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6714 if (h->root.type == bfd_link_hash_indirect)
6717 if (h->root.type == bfd_link_hash_warning)
6718 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6720 if (h->root.type != bfd_link_hash_defined
6721 && h->root.type != bfd_link_hash_defweak)
6724 eh = (struct ppc_link_hash_entry *) h;
6725 if (eh->adjust_done)
6728 if (eh->elf.root.u.def.section == toc_inf->toc)
6730 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6731 if (skip != (unsigned long) -1)
6732 eh->elf.root.u.def.value -= skip;
6735 (*_bfd_error_handler)
6736 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6737 eh->elf.root.u.def.section = &bfd_abs_section;
6738 eh->elf.root.u.def.value = 0;
6740 eh->adjust_done = 1;
6742 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6743 toc_inf->global_toc_syms = TRUE;
6748 /* Examine all relocs referencing .toc sections in order to remove
6749 unused .toc entries. */
6752 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6755 struct adjust_toc_info toc_inf;
6757 toc_inf.global_toc_syms = TRUE;
6758 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6760 asection *toc, *sec;
6761 Elf_Internal_Shdr *symtab_hdr;
6762 Elf_Internal_Sym *local_syms;
6763 struct elf_link_hash_entry **sym_hashes;
6764 Elf_Internal_Rela *relstart, *rel, *wrel;
6765 unsigned long *skip, *drop;
6766 unsigned char *used;
6767 unsigned char *keep, last, some_unused;
6769 toc = bfd_get_section_by_name (ibfd, ".toc");
6771 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6772 || elf_discarded_section (toc))
6776 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6777 sym_hashes = elf_sym_hashes (ibfd);
6779 /* Look at sections dropped from the final link. */
6782 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6784 if (sec->reloc_count == 0
6785 || !elf_discarded_section (sec)
6786 || get_opd_info (sec)
6787 || (sec->flags & SEC_ALLOC) == 0
6788 || (sec->flags & SEC_DEBUGGING) != 0)
6791 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6792 if (relstart == NULL)
6795 /* Run through the relocs to see which toc entries might be
6797 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6799 enum elf_ppc64_reloc_type r_type;
6800 unsigned long r_symndx;
6802 struct elf_link_hash_entry *h;
6803 Elf_Internal_Sym *sym;
6806 r_type = ELF64_R_TYPE (rel->r_info);
6813 case R_PPC64_TOC16_LO:
6814 case R_PPC64_TOC16_HI:
6815 case R_PPC64_TOC16_HA:
6816 case R_PPC64_TOC16_DS:
6817 case R_PPC64_TOC16_LO_DS:
6821 r_symndx = ELF64_R_SYM (rel->r_info);
6822 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6830 val = h->root.u.def.value;
6832 val = sym->st_value;
6833 val += rel->r_addend;
6835 if (val >= toc->size)
6838 /* Anything in the toc ought to be aligned to 8 bytes.
6839 If not, don't mark as unused. */
6845 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
6853 if (elf_section_data (sec)->relocs != relstart)
6860 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
6864 if (local_syms != NULL
6865 && symtab_hdr->contents != (unsigned char *) local_syms)
6869 && elf_section_data (sec)->relocs != relstart)
6876 /* Now check all kept sections that might reference the toc. */
6877 for (sec = ibfd->sections;
6879 /* Check the toc itself last. */
6880 sec = (sec == toc ? NULL
6881 : sec->next == toc && sec->next->next ? sec->next->next
6882 : sec->next == NULL ? toc
6887 if (sec->reloc_count == 0
6888 || elf_discarded_section (sec)
6889 || get_opd_info (sec)
6890 || (sec->flags & SEC_ALLOC) == 0
6891 || (sec->flags & SEC_DEBUGGING) != 0)
6894 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
6895 if (relstart == NULL)
6898 /* Mark toc entries referenced as used. */
6901 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6903 enum elf_ppc64_reloc_type r_type;
6904 unsigned long r_symndx;
6906 struct elf_link_hash_entry *h;
6907 Elf_Internal_Sym *sym;
6910 r_type = ELF64_R_TYPE (rel->r_info);
6914 case R_PPC64_TOC16_LO:
6915 case R_PPC64_TOC16_HI:
6916 case R_PPC64_TOC16_HA:
6917 case R_PPC64_TOC16_DS:
6918 case R_PPC64_TOC16_LO_DS:
6919 /* In case we're taking addresses of toc entries. */
6920 case R_PPC64_ADDR64:
6927 r_symndx = ELF64_R_SYM (rel->r_info);
6928 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6939 val = h->root.u.def.value;
6941 val = sym->st_value;
6942 val += rel->r_addend;
6944 if (val >= toc->size)
6947 /* For the toc section, we only mark as used if
6948 this entry itself isn't unused. */
6951 && (used[rel->r_offset >> 3]
6952 || !skip[rel->r_offset >> 3]))
6953 /* Do all the relocs again, to catch reference
6962 /* Merge the used and skip arrays. Assume that TOC
6963 doublewords not appearing as either used or unused belong
6964 to to an entry more than one doubleword in size. */
6965 for (drop = skip, keep = used, last = 0, some_unused = 0;
6966 drop < skip + (toc->size + 7) / 8;
6987 bfd_byte *contents, *src;
6990 /* Shuffle the toc contents, and at the same time convert the
6991 skip array from booleans into offsets. */
6992 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
6995 elf_section_data (toc)->this_hdr.contents = contents;
6997 for (src = contents, off = 0, drop = skip;
6998 src < contents + toc->size;
7003 *drop = (unsigned long) -1;
7009 memcpy (src - off, src, 8);
7012 toc->rawsize = toc->size;
7013 toc->size = src - contents - off;
7015 /* Read toc relocs. */
7016 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, TRUE);
7017 if (relstart == NULL)
7020 /* Remove unused toc relocs, and adjust those we keep. */
7022 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7023 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7025 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7026 wrel->r_info = rel->r_info;
7027 wrel->r_addend = rel->r_addend;
7030 toc->reloc_count = wrel - relstart;
7031 elf_section_data (toc)->rel_hdr.sh_size
7032 = toc->reloc_count * elf_section_data (toc)->rel_hdr.sh_entsize;
7033 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7035 /* Adjust addends for relocs against the toc section sym. */
7036 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7038 if (sec->reloc_count == 0
7039 || elf_discarded_section (sec))
7042 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7044 if (relstart == NULL)
7047 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7049 enum elf_ppc64_reloc_type r_type;
7050 unsigned long r_symndx;
7052 struct elf_link_hash_entry *h;
7053 Elf_Internal_Sym *sym;
7055 r_type = ELF64_R_TYPE (rel->r_info);
7062 case R_PPC64_TOC16_LO:
7063 case R_PPC64_TOC16_HI:
7064 case R_PPC64_TOC16_HA:
7065 case R_PPC64_TOC16_DS:
7066 case R_PPC64_TOC16_LO_DS:
7067 case R_PPC64_ADDR64:
7071 r_symndx = ELF64_R_SYM (rel->r_info);
7072 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7076 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7079 rel->r_addend -= skip[rel->r_addend >> 3];
7083 /* We shouldn't have local or global symbols defined in the TOC,
7084 but handle them anyway. */
7085 if (local_syms != NULL)
7087 Elf_Internal_Sym *sym;
7089 for (sym = local_syms;
7090 sym < local_syms + symtab_hdr->sh_info;
7092 if (sym->st_shndx != SHN_UNDEF
7093 && (sym->st_shndx < SHN_LORESERVE
7094 || sym->st_shndx > SHN_HIRESERVE)
7095 && sym->st_value != 0
7096 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7098 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7099 sym->st_value -= skip[sym->st_value >> 3];
7102 (*_bfd_error_handler)
7103 (_("%s defined in removed toc entry"),
7104 bfd_elf_sym_name (ibfd, symtab_hdr, sym));
7106 sym->st_shndx = SHN_ABS;
7108 symtab_hdr->contents = (unsigned char *) local_syms;
7112 /* Finally, adjust any global syms defined in the toc. */
7113 if (toc_inf.global_toc_syms)
7116 toc_inf.skip = skip;
7117 toc_inf.global_toc_syms = FALSE;
7118 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7123 if (local_syms != NULL
7124 && symtab_hdr->contents != (unsigned char *) local_syms)
7126 if (!info->keep_memory)
7129 symtab_hdr->contents = (unsigned char *) local_syms;
7137 /* Allocate space in .plt, .got and associated reloc sections for
7141 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7143 struct bfd_link_info *info;
7144 struct ppc_link_hash_table *htab;
7146 struct ppc_link_hash_entry *eh;
7147 struct ppc_dyn_relocs *p;
7148 struct got_entry *gent;
7150 if (h->root.type == bfd_link_hash_indirect)
7153 if (h->root.type == bfd_link_hash_warning)
7154 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7156 info = (struct bfd_link_info *) inf;
7157 htab = ppc_hash_table (info);
7159 if (htab->elf.dynamic_sections_created
7161 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
7163 struct plt_entry *pent;
7164 bfd_boolean doneone = FALSE;
7165 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7166 if (pent->plt.refcount > 0)
7168 /* If this is the first .plt entry, make room for the special
7172 s->size += PLT_INITIAL_ENTRY_SIZE;
7174 pent->plt.offset = s->size;
7176 /* Make room for this entry. */
7177 s->size += PLT_ENTRY_SIZE;
7179 /* Make room for the .glink code. */
7182 s->size += GLINK_CALL_STUB_SIZE;
7183 /* We need bigger stubs past index 32767. */
7184 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7188 /* We also need to make an entry in the .rela.plt section. */
7190 s->size += sizeof (Elf64_External_Rela);
7194 pent->plt.offset = (bfd_vma) -1;
7197 h->plt.plist = NULL;
7203 h->plt.plist = NULL;
7207 eh = (struct ppc_link_hash_entry *) h;
7208 /* Run through the TLS GD got entries first if we're changing them
7210 if ((eh->tls_mask & TLS_TPRELGD) != 0)
7211 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7212 if (gent->got.refcount > 0
7213 && (gent->tls_type & TLS_GD) != 0)
7215 /* This was a GD entry that has been converted to TPREL. If
7216 there happens to be a TPREL entry we can use that one. */
7217 struct got_entry *ent;
7218 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7219 if (ent->got.refcount > 0
7220 && (ent->tls_type & TLS_TPREL) != 0
7221 && ent->addend == gent->addend
7222 && ent->owner == gent->owner)
7224 gent->got.refcount = 0;
7228 /* If not, then we'll be using our own TPREL entry. */
7229 if (gent->got.refcount != 0)
7230 gent->tls_type = TLS_TLS | TLS_TPREL;
7233 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7234 if (gent->got.refcount > 0)
7238 /* Make sure this symbol is output as a dynamic symbol.
7239 Undefined weak syms won't yet be marked as dynamic,
7240 nor will all TLS symbols. */
7241 if (h->dynindx == -1
7242 && !h->forced_local)
7244 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7248 if ((gent->tls_type & TLS_LD) != 0
7251 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
7255 s = ppc64_elf_tdata (gent->owner)->got;
7256 gent->got.offset = s->size;
7258 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
7259 dyn = htab->elf.dynamic_sections_created;
7261 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7262 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7263 || h->root.type != bfd_link_hash_undefweak))
7264 ppc64_elf_tdata (gent->owner)->relgot->size
7265 += (gent->tls_type & eh->tls_mask & TLS_GD
7266 ? 2 * sizeof (Elf64_External_Rela)
7267 : sizeof (Elf64_External_Rela));
7270 gent->got.offset = (bfd_vma) -1;
7272 if (eh->dyn_relocs == NULL)
7275 /* In the shared -Bsymbolic case, discard space allocated for
7276 dynamic pc-relative relocs against symbols which turn out to be
7277 defined in regular objects. For the normal shared case, discard
7278 space for relocs that have become local due to symbol visibility
7283 /* Relocs that use pc_count are those that appear on a call insn,
7284 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7285 generated via assembly. We want calls to protected symbols to
7286 resolve directly to the function rather than going via the plt.
7287 If people want function pointer comparisons to work as expected
7288 then they should avoid writing weird assembly. */
7289 if (SYMBOL_CALLS_LOCAL (info, h))
7291 struct ppc_dyn_relocs **pp;
7293 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
7295 p->count -= p->pc_count;
7304 /* Also discard relocs on undefined weak syms with non-default
7306 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7307 && h->root.type == bfd_link_hash_undefweak)
7308 eh->dyn_relocs = NULL;
7310 else if (ELIMINATE_COPY_RELOCS)
7312 /* For the non-shared case, discard space for relocs against
7313 symbols which turn out to need copy relocs or are not
7320 /* Make sure this symbol is output as a dynamic symbol.
7321 Undefined weak syms won't yet be marked as dynamic. */
7322 if (h->dynindx == -1
7323 && !h->forced_local)
7325 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7329 /* If that succeeded, we know we'll be keeping all the
7331 if (h->dynindx != -1)
7335 eh->dyn_relocs = NULL;
7340 /* Finally, allocate space. */
7341 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7343 asection *sreloc = elf_section_data (p->sec)->sreloc;
7344 sreloc->size += p->count * sizeof (Elf64_External_Rela);
7350 /* Find any dynamic relocs that apply to read-only sections. */
7353 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7355 struct ppc_link_hash_entry *eh;
7356 struct ppc_dyn_relocs *p;
7358 if (h->root.type == bfd_link_hash_warning)
7359 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7361 eh = (struct ppc_link_hash_entry *) h;
7362 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7364 asection *s = p->sec->output_section;
7366 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7368 struct bfd_link_info *info = inf;
7370 info->flags |= DF_TEXTREL;
7372 /* Not an error, just cut short the traversal. */
7379 /* Set the sizes of the dynamic sections. */
7382 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7383 struct bfd_link_info *info)
7385 struct ppc_link_hash_table *htab;
7391 htab = ppc_hash_table (info);
7392 dynobj = htab->elf.dynobj;
7396 if (htab->elf.dynamic_sections_created)
7398 /* Set the contents of the .interp section to the interpreter. */
7399 if (info->executable)
7401 s = bfd_get_section_by_name (dynobj, ".interp");
7404 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
7405 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7409 /* Set up .got offsets for local syms, and space for local dynamic
7411 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7413 struct got_entry **lgot_ents;
7414 struct got_entry **end_lgot_ents;
7416 bfd_size_type locsymcount;
7417 Elf_Internal_Shdr *symtab_hdr;
7420 if (!is_ppc64_elf_target (ibfd->xvec))
7423 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7425 s = ppc64_elf_tdata (ibfd)->got;
7426 ppc64_tlsld_got (ibfd)->offset = s->size;
7430 srel = ppc64_elf_tdata (ibfd)->relgot;
7431 srel->size += sizeof (Elf64_External_Rela);
7435 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7437 for (s = ibfd->sections; s != NULL; s = s->next)
7439 struct ppc_dyn_relocs *p;
7441 for (p = *((struct ppc_dyn_relocs **)
7442 &elf_section_data (s)->local_dynrel);
7446 if (!bfd_is_abs_section (p->sec)
7447 && bfd_is_abs_section (p->sec->output_section))
7449 /* Input section has been discarded, either because
7450 it is a copy of a linkonce section or due to
7451 linker script /DISCARD/, so we'll be discarding
7454 else if (p->count != 0)
7456 srel = elf_section_data (p->sec)->sreloc;
7457 srel->size += p->count * sizeof (Elf64_External_Rela);
7458 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7459 info->flags |= DF_TEXTREL;
7464 lgot_ents = elf_local_got_ents (ibfd);
7468 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7469 locsymcount = symtab_hdr->sh_info;
7470 end_lgot_ents = lgot_ents + locsymcount;
7471 lgot_masks = (char *) end_lgot_ents;
7472 s = ppc64_elf_tdata (ibfd)->got;
7473 srel = ppc64_elf_tdata (ibfd)->relgot;
7474 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
7476 struct got_entry *ent;
7478 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7479 if (ent->got.refcount > 0)
7481 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
7483 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
7485 ppc64_tlsld_got (ibfd)->offset = s->size;
7488 srel->size += sizeof (Elf64_External_Rela);
7490 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
7494 ent->got.offset = s->size;
7495 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
7499 srel->size += 2 * sizeof (Elf64_External_Rela);
7505 srel->size += sizeof (Elf64_External_Rela);
7510 ent->got.offset = (bfd_vma) -1;
7514 /* Allocate global sym .plt and .got entries, and space for global
7515 sym dynamic relocs. */
7516 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
7518 /* We now have determined the sizes of the various dynamic sections.
7519 Allocate memory for them. */
7521 for (s = dynobj->sections; s != NULL; s = s->next)
7523 if ((s->flags & SEC_LINKER_CREATED) == 0)
7526 if (s == htab->brlt || s == htab->relbrlt)
7527 /* These haven't been allocated yet; don't strip. */
7529 else if (s == htab->got
7531 || s == htab->glink)
7533 /* Strip this section if we don't need it; see the
7536 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
7540 /* If we don't need this section, strip it from the
7541 output file. This is mostly to handle .rela.bss and
7542 .rela.plt. We must create both sections in
7543 create_dynamic_sections, because they must be created
7544 before the linker maps input sections to output
7545 sections. The linker does that before
7546 adjust_dynamic_symbol is called, and it is that
7547 function which decides whether anything needs to go
7548 into these sections. */
7552 if (s != htab->relplt)
7555 /* We use the reloc_count field as a counter if we need
7556 to copy relocs into the output file. */
7562 /* It's not one of our sections, so don't allocate space. */
7568 _bfd_strip_section_from_output (info, s);
7572 /* .plt is in the bss section. We don't initialise it. */
7576 /* Allocate memory for the section contents. We use bfd_zalloc
7577 here in case unused entries are not reclaimed before the
7578 section's contents are written out. This should not happen,
7579 but this way if it does we get a R_PPC64_NONE reloc in .rela
7580 sections instead of garbage.
7581 We also rely on the section contents being zero when writing
7583 s->contents = bfd_zalloc (dynobj, s->size);
7584 if (s->contents == NULL)
7588 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7590 if (!is_ppc64_elf_target (ibfd->xvec))
7593 s = ppc64_elf_tdata (ibfd)->got;
7594 if (s != NULL && s != htab->got)
7597 _bfd_strip_section_from_output (info, s);
7600 s->contents = bfd_zalloc (ibfd, s->size);
7601 if (s->contents == NULL)
7605 s = ppc64_elf_tdata (ibfd)->relgot;
7609 _bfd_strip_section_from_output (info, s);
7612 s->contents = bfd_zalloc (ibfd, s->size);
7613 if (s->contents == NULL)
7621 if (htab->elf.dynamic_sections_created)
7623 /* Add some entries to the .dynamic section. We fill in the
7624 values later, in ppc64_elf_finish_dynamic_sections, but we
7625 must add the entries now so that we get the correct size for
7626 the .dynamic section. The DT_DEBUG entry is filled in by the
7627 dynamic linker and used by the debugger. */
7628 #define add_dynamic_entry(TAG, VAL) \
7629 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7631 if (info->executable)
7633 if (!add_dynamic_entry (DT_DEBUG, 0))
7637 if (htab->plt != NULL && htab->plt->size != 0)
7639 if (!add_dynamic_entry (DT_PLTGOT, 0)
7640 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7641 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
7642 || !add_dynamic_entry (DT_JMPREL, 0)
7643 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
7649 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7650 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
7656 if (!add_dynamic_entry (DT_RELA, 0)
7657 || !add_dynamic_entry (DT_RELASZ, 0)
7658 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
7661 /* If any dynamic relocs apply to a read-only section,
7662 then we need a DT_TEXTREL entry. */
7663 if ((info->flags & DF_TEXTREL) == 0)
7664 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
7666 if ((info->flags & DF_TEXTREL) != 0)
7668 if (!add_dynamic_entry (DT_TEXTREL, 0))
7673 #undef add_dynamic_entry
7678 /* Determine the type of stub needed, if any, for a call. */
7680 static inline enum ppc_stub_type
7681 ppc_type_of_stub (asection *input_sec,
7682 const Elf_Internal_Rela *rel,
7683 struct ppc_link_hash_entry **hash,
7684 bfd_vma destination)
7686 struct ppc_link_hash_entry *h = *hash;
7688 bfd_vma branch_offset;
7689 bfd_vma max_branch_offset;
7690 enum elf_ppc64_reloc_type r_type;
7695 && h->oh->is_func_descriptor)
7698 if (h->elf.dynindx != -1)
7700 struct plt_entry *ent;
7702 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
7703 if (ent->addend == rel->r_addend
7704 && ent->plt.offset != (bfd_vma) -1)
7707 return ppc_stub_plt_call;
7711 if (!(h->elf.root.type == bfd_link_hash_defined
7712 || h->elf.root.type == bfd_link_hash_defweak)
7713 || h->elf.root.u.def.section->output_section == NULL)
7714 return ppc_stub_none;
7717 /* Determine where the call point is. */
7718 location = (input_sec->output_offset
7719 + input_sec->output_section->vma
7722 branch_offset = destination - location;
7723 r_type = ELF64_R_TYPE (rel->r_info);
7725 /* Determine if a long branch stub is needed. */
7726 max_branch_offset = 1 << 25;
7727 if (r_type != R_PPC64_REL24)
7728 max_branch_offset = 1 << 15;
7730 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7731 /* We need a stub. Figure out whether a long_branch or plt_branch
7733 return ppc_stub_long_branch;
7735 return ppc_stub_none;
7738 /* Build a .plt call stub. */
7740 static inline bfd_byte *
7741 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
7743 #define PPC_LO(v) ((v) & 0xffff)
7744 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7745 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7747 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
7748 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
7749 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7750 if (PPC_HA (offset + 8) != PPC_HA (offset))
7751 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7753 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7754 if (PPC_HA (offset + 8) != PPC_HA (offset))
7755 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7757 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7758 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7759 bfd_put_32 (obfd, BCTR, p), p += 4;
7764 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7766 struct ppc_stub_hash_entry *stub_entry;
7767 struct ppc_branch_hash_entry *br_entry;
7768 struct bfd_link_info *info;
7769 struct ppc_link_hash_table *htab;
7773 struct plt_entry *ent;
7777 /* Massage our args to the form they really have. */
7778 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7781 htab = ppc_hash_table (info);
7783 /* Make a note of the offset within the stubs for this entry. */
7784 stub_entry->stub_offset = stub_entry->stub_sec->size;
7785 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
7787 htab->stub_count[stub_entry->stub_type - 1] += 1;
7788 switch (stub_entry->stub_type)
7790 case ppc_stub_long_branch:
7791 case ppc_stub_long_branch_r2off:
7792 /* Branches are relative. This is where we are going to. */
7793 off = dest = (stub_entry->target_value
7794 + stub_entry->target_section->output_offset
7795 + stub_entry->target_section->output_section->vma);
7797 /* And this is where we are coming from. */
7798 off -= (stub_entry->stub_offset
7799 + stub_entry->stub_sec->output_offset
7800 + stub_entry->stub_sec->output_section->vma);
7802 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7808 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7809 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7810 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7812 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7814 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7819 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
7821 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
7823 if (info->emitrelocations)
7825 Elf_Internal_Rela *relocs, *r;
7826 struct bfd_elf_section_data *elfsec_data;
7828 elfsec_data = elf_section_data (stub_entry->stub_sec);
7829 relocs = elfsec_data->relocs;
7832 bfd_size_type relsize;
7833 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
7834 relocs = bfd_alloc (htab->stub_bfd, relsize);
7837 elfsec_data->relocs = relocs;
7838 elfsec_data->rel_hdr.sh_size = relsize;
7839 elfsec_data->rel_hdr.sh_entsize = 24;
7840 stub_entry->stub_sec->reloc_count = 0;
7842 r = relocs + stub_entry->stub_sec->reloc_count;
7843 stub_entry->stub_sec->reloc_count += 1;
7844 r->r_offset = loc - stub_entry->stub_sec->contents;
7845 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
7847 if (stub_entry->h != NULL)
7849 struct elf_link_hash_entry **hashes;
7850 unsigned long symndx;
7851 struct ppc_link_hash_entry *h;
7853 hashes = elf_sym_hashes (htab->stub_bfd);
7856 bfd_size_type hsize;
7858 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
7859 hashes = bfd_zalloc (htab->stub_bfd, hsize);
7862 elf_sym_hashes (htab->stub_bfd) = hashes;
7863 htab->stub_globals = 1;
7865 symndx = htab->stub_globals++;
7867 hashes[symndx] = &h->elf;
7868 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
7869 if (h->oh != NULL && h->oh->is_func)
7871 if (h->elf.root.u.def.section != stub_entry->target_section)
7872 /* H is an opd symbol. The addend must be zero. */
7876 off = (h->elf.root.u.def.value
7877 + h->elf.root.u.def.section->output_offset
7878 + h->elf.root.u.def.section->output_section->vma);
7885 case ppc_stub_plt_branch:
7886 case ppc_stub_plt_branch_r2off:
7887 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7888 stub_entry->root.string + 9,
7890 if (br_entry == NULL)
7892 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
7893 stub_entry->root.string + 9);
7894 htab->stub_error = TRUE;
7898 off = (stub_entry->target_value
7899 + stub_entry->target_section->output_offset
7900 + stub_entry->target_section->output_section->vma);
7902 bfd_put_64 (htab->brlt->owner, off,
7903 htab->brlt->contents + br_entry->offset);
7905 if (htab->relbrlt != NULL)
7907 /* Create a reloc for the branch lookup table entry. */
7908 Elf_Internal_Rela rela;
7911 rela.r_offset = (br_entry->offset
7912 + htab->brlt->output_offset
7913 + htab->brlt->output_section->vma);
7914 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7915 rela.r_addend = off;
7917 rl = htab->relbrlt->contents;
7918 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
7919 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
7922 off = (br_entry->offset
7923 + htab->brlt->output_offset
7924 + htab->brlt->output_section->vma
7925 - elf_gp (htab->brlt->output_section->owner)
7926 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7928 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
7930 (*_bfd_error_handler)
7931 (_("linkage table error against `%s'"),
7932 stub_entry->root.string);
7933 bfd_set_error (bfd_error_bad_value);
7934 htab->stub_error = TRUE;
7939 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
7941 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7943 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7950 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7951 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7952 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7954 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7956 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7958 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7960 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7964 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
7966 bfd_put_32 (htab->stub_bfd, BCTR, loc);
7969 case ppc_stub_plt_call:
7970 /* Do the best we can for shared libraries built without
7971 exporting ".foo" for each "foo". This can happen when symbol
7972 versioning scripts strip all bar a subset of symbols. */
7973 if (stub_entry->h->oh != NULL
7974 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
7975 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
7977 /* Point the symbol at the stub. There may be multiple stubs,
7978 we don't really care; The main thing is to make this sym
7979 defined somewhere. Maybe defining the symbol in the stub
7980 section is a silly idea. If we didn't do this, htab->top_id
7982 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
7983 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
7984 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
7987 /* Now build the stub. */
7989 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
7990 if (ent->addend == stub_entry->addend)
7992 off = ent->plt.offset;
7995 if (off >= (bfd_vma) -2)
7998 off &= ~ (bfd_vma) 1;
7999 off += (htab->plt->output_offset
8000 + htab->plt->output_section->vma
8001 - elf_gp (htab->plt->output_section->owner)
8002 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8004 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8006 (*_bfd_error_handler)
8007 (_("linkage table error against `%s'"),
8008 stub_entry->h->elf.root.root.string);
8009 bfd_set_error (bfd_error_bad_value);
8010 htab->stub_error = TRUE;
8014 p = build_plt_stub (htab->stub_bfd, loc, off);
8023 stub_entry->stub_sec->size += size;
8025 if (htab->emit_stub_syms)
8027 struct elf_link_hash_entry *h;
8030 const char *const stub_str[] = { "long_branch",
8031 "long_branch_r2off",
8036 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8037 len2 = strlen (stub_entry->root.string);
8038 name = bfd_malloc (len1 + len2 + 2);
8041 memcpy (name, stub_entry->root.string, 9);
8042 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8043 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8044 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
8047 if (h->root.type == bfd_link_hash_new)
8049 h->root.type = bfd_link_hash_defined;
8050 h->root.u.def.section = stub_entry->stub_sec;
8051 h->root.u.def.value = stub_entry->stub_offset;
8054 h->ref_regular_nonweak = 1;
8055 h->forced_local = 1;
8063 /* As above, but don't actually build the stub. Just bump offset so
8064 we know stub section sizes, and select plt_branch stubs where
8065 long_branch stubs won't do. */
8068 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8070 struct ppc_stub_hash_entry *stub_entry;
8071 struct bfd_link_info *info;
8072 struct ppc_link_hash_table *htab;
8076 /* Massage our args to the form they really have. */
8077 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8080 htab = ppc_hash_table (info);
8082 if (stub_entry->stub_type == ppc_stub_plt_call)
8084 struct plt_entry *ent;
8086 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8087 if (ent->addend == stub_entry->addend)
8089 off = ent->plt.offset & ~(bfd_vma) 1;
8092 if (off >= (bfd_vma) -2)
8094 off += (htab->plt->output_offset
8095 + htab->plt->output_section->vma
8096 - elf_gp (htab->plt->output_section->owner)
8097 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8099 size = PLT_CALL_STUB_SIZE;
8100 if (PPC_HA (off + 16) != PPC_HA (off))
8105 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8107 off = (stub_entry->target_value
8108 + stub_entry->target_section->output_offset
8109 + stub_entry->target_section->output_section->vma);
8110 off -= (stub_entry->stub_sec->size
8111 + stub_entry->stub_sec->output_offset
8112 + stub_entry->stub_sec->output_section->vma);
8114 /* Reset the stub type from the plt variant in case we now
8115 can reach with a shorter stub. */
8116 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8117 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8120 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8126 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8127 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8129 struct ppc_branch_hash_entry *br_entry;
8131 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8132 stub_entry->root.string + 9,
8134 if (br_entry == NULL)
8136 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8137 stub_entry->root.string + 9);
8138 htab->stub_error = TRUE;
8142 if (br_entry->iter != htab->stub_iteration)
8144 br_entry->iter = htab->stub_iteration;
8145 br_entry->offset = htab->brlt->size;
8146 htab->brlt->size += 8;
8148 if (htab->relbrlt != NULL)
8149 htab->relbrlt->size += sizeof (Elf64_External_Rela);
8152 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
8154 if (stub_entry->stub_type != ppc_stub_plt_branch)
8158 if (info->emitrelocations
8159 && (stub_entry->stub_type == ppc_stub_long_branch
8160 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8161 stub_entry->stub_sec->reloc_count += 1;
8164 stub_entry->stub_sec->size += size;
8168 /* Set up various things so that we can make a list of input sections
8169 for each output section included in the link. Returns -1 on error,
8170 0 when no stubs will be needed, and 1 on success. */
8173 ppc64_elf_setup_section_lists (bfd *output_bfd,
8174 struct bfd_link_info *info,
8178 int top_id, top_index, id;
8180 asection **input_list;
8182 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8184 htab->no_multi_toc = no_multi_toc;
8186 if (htab->brlt == NULL)
8189 /* Find the top input section id. */
8190 for (input_bfd = info->input_bfds, top_id = 3;
8192 input_bfd = input_bfd->link_next)
8194 for (section = input_bfd->sections;
8196 section = section->next)
8198 if (top_id < section->id)
8199 top_id = section->id;
8203 htab->top_id = top_id;
8204 amt = sizeof (struct map_stub) * (top_id + 1);
8205 htab->stub_group = bfd_zmalloc (amt);
8206 if (htab->stub_group == NULL)
8209 /* Set toc_off for com, und, abs and ind sections. */
8210 for (id = 0; id < 3; id++)
8211 htab->stub_group[id].toc_off = TOC_BASE_OFF;
8213 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
8215 /* We can't use output_bfd->section_count here to find the top output
8216 section index as some sections may have been removed, and
8217 _bfd_strip_section_from_output doesn't renumber the indices. */
8218 for (section = output_bfd->sections, top_index = 0;
8220 section = section->next)
8222 if (top_index < section->index)
8223 top_index = section->index;
8226 htab->top_index = top_index;
8227 amt = sizeof (asection *) * (top_index + 1);
8228 input_list = bfd_zmalloc (amt);
8229 htab->input_list = input_list;
8230 if (input_list == NULL)
8236 /* The linker repeatedly calls this function for each TOC input section
8237 and linker generated GOT section. Group input bfds such that the toc
8238 within a group is less than 64k in size. Will break with cute linker
8239 scripts that play games with dot in the output toc section. */
8242 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
8244 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8246 if (!htab->no_multi_toc)
8248 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8249 bfd_vma off = addr - htab->toc_curr;
8251 if (off + isec->size > 0x10000)
8252 htab->toc_curr = addr;
8254 elf_gp (isec->owner) = (htab->toc_curr
8255 - elf_gp (isec->output_section->owner)
8260 /* Called after the last call to the above function. */
8263 ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
8265 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8267 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8269 /* toc_curr tracks the TOC offset used for code sections below in
8270 ppc64_elf_next_input_section. Start off at 0x8000. */
8271 htab->toc_curr = TOC_BASE_OFF;
8274 /* No toc references were found in ISEC. If the code in ISEC makes no
8275 calls, then there's no need to use toc adjusting stubs when branching
8276 into ISEC. Actually, indirect calls from ISEC are OK as they will
8277 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8278 needed, and 2 if a cyclical call-graph was found but no other reason
8279 for a stub was detected. If called from the top level, a return of
8280 2 means the same as a return of 0. */
8283 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
8285 Elf_Internal_Rela *relstart, *rel;
8286 Elf_Internal_Sym *local_syms;
8288 struct ppc_link_hash_table *htab;
8290 /* We know none of our code bearing sections will need toc stubs. */
8291 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8294 if (isec->size == 0)
8297 if (isec->output_section == NULL)
8300 /* Hack for linux kernel. .fixup contains branches, but only back to
8301 the function that hit an exception. */
8302 if (strcmp (isec->name, ".fixup") == 0)
8305 if (isec->reloc_count == 0)
8308 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8310 if (relstart == NULL)
8313 /* Look for branches to outside of this section. */
8316 htab = ppc_hash_table (info);
8317 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
8319 enum elf_ppc64_reloc_type r_type;
8320 unsigned long r_symndx;
8321 struct elf_link_hash_entry *h;
8322 Elf_Internal_Sym *sym;
8328 r_type = ELF64_R_TYPE (rel->r_info);
8329 if (r_type != R_PPC64_REL24
8330 && r_type != R_PPC64_REL14
8331 && r_type != R_PPC64_REL14_BRTAKEN
8332 && r_type != R_PPC64_REL14_BRNTAKEN)
8335 r_symndx = ELF64_R_SYM (rel->r_info);
8336 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8343 /* Ignore branches to undefined syms. */
8344 if (sym_sec == NULL)
8347 /* Calls to dynamic lib functions go through a plt call stub
8348 that uses r2. Assume branches to other sections not included
8349 in the link need stubs too, to cover -R and absolute syms. */
8350 if (sym_sec->output_section == NULL)
8357 sym_value = sym->st_value;
8360 if (h->root.type != bfd_link_hash_defined
8361 && h->root.type != bfd_link_hash_defweak)
8363 sym_value = h->root.u.def.value;
8365 sym_value += rel->r_addend;
8367 /* If this branch reloc uses an opd sym, find the code section. */
8368 opd_adjust = get_opd_info (sym_sec);
8369 if (opd_adjust != NULL)
8376 adjust = opd_adjust[sym->st_value / 8];
8378 /* Assume deleted functions won't ever be called. */
8380 sym_value += adjust;
8383 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8384 if (dest == (bfd_vma) -1)
8389 + sym_sec->output_offset
8390 + sym_sec->output_section->vma);
8392 /* Ignore branch to self. */
8393 if (sym_sec == isec)
8396 /* If the called function uses the toc, we need a stub. */
8397 if (sym_sec->has_toc_reloc
8398 || sym_sec->makes_toc_func_call)
8404 /* Assume any branch that needs a long branch stub might in fact
8405 need a plt_branch stub. A plt_branch stub uses r2. */
8406 else if (dest - (isec->output_offset
8407 + isec->output_section->vma
8408 + rel->r_offset) + (1 << 25) >= (2 << 25))
8414 /* If calling back to a section in the process of being tested, we
8415 can't say for sure that no toc adjusting stubs are needed, so
8416 don't return zero. */
8417 else if (sym_sec->call_check_in_progress)
8420 /* Branches to another section that itself doesn't have any TOC
8421 references are OK. Recursively call ourselves to check. */
8422 else if (sym_sec->id <= htab->top_id
8423 && htab->stub_group[sym_sec->id].toc_off == 0)
8427 /* Mark current section as indeterminate, so that other
8428 sections that call back to current won't be marked as
8430 isec->call_check_in_progress = 1;
8431 recur = toc_adjusting_stub_needed (info, sym_sec);
8432 isec->call_check_in_progress = 0;
8436 /* An error. Exit. */
8440 else if (recur <= 1)
8442 /* Known result. Mark as checked and set section flag. */
8443 htab->stub_group[sym_sec->id].toc_off = 1;
8446 sym_sec->makes_toc_func_call = 1;
8453 /* Unknown result. Continue checking. */
8459 if (local_syms != NULL
8460 && (elf_tdata (isec->owner)->symtab_hdr.contents
8461 != (unsigned char *) local_syms))
8463 if (elf_section_data (isec)->relocs != relstart)
8469 /* The linker repeatedly calls this function for each input section,
8470 in the order that input sections are linked into output sections.
8471 Build lists of input sections to determine groupings between which
8472 we may insert linker stubs. */
8475 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
8477 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8479 if ((isec->output_section->flags & SEC_CODE) != 0
8480 && isec->output_section->index <= htab->top_index)
8482 asection **list = htab->input_list + isec->output_section->index;
8483 /* Steal the link_sec pointer for our list. */
8484 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8485 /* This happens to make the list in reverse order,
8486 which is what we want. */
8487 PREV_SEC (isec) = *list;
8491 if (htab->multi_toc_needed)
8493 /* If a code section has a function that uses the TOC then we need
8494 to use the right TOC (obviously). Also, make sure that .opd gets
8495 the correct TOC value for R_PPC64_TOC relocs that don't have or
8496 can't find their function symbol (shouldn't ever happen now). */
8497 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8499 if (elf_gp (isec->owner) != 0)
8500 htab->toc_curr = elf_gp (isec->owner);
8502 else if (htab->stub_group[isec->id].toc_off == 0)
8504 int ret = toc_adjusting_stub_needed (info, isec);
8508 isec->makes_toc_func_call = ret & 1;
8512 /* Functions that don't use the TOC can belong in any TOC group.
8513 Use the last TOC base. This happens to make _init and _fini
8515 htab->stub_group[isec->id].toc_off = htab->toc_curr;
8519 /* See whether we can group stub sections together. Grouping stub
8520 sections may result in fewer stubs. More importantly, we need to
8521 put all .init* and .fini* stubs at the beginning of the .init or
8522 .fini output sections respectively, because glibc splits the
8523 _init and _fini functions into multiple parts. Putting a stub in
8524 the middle of a function is not a good idea. */
8527 group_sections (struct ppc_link_hash_table *htab,
8528 bfd_size_type stub_group_size,
8529 bfd_boolean stubs_always_before_branch)
8531 asection **list = htab->input_list + htab->top_index;
8534 asection *tail = *list;
8535 while (tail != NULL)
8539 bfd_size_type total;
8540 bfd_boolean big_sec;
8545 big_sec = total >= stub_group_size;
8546 curr_toc = htab->stub_group[tail->id].toc_off;
8548 while ((prev = PREV_SEC (curr)) != NULL
8549 && ((total += curr->output_offset - prev->output_offset)
8551 && htab->stub_group[prev->id].toc_off == curr_toc)
8554 /* OK, the size from the start of CURR to the end is less
8555 than stub_group_size and thus can be handled by one stub
8556 section. (or the tail section is itself larger than
8557 stub_group_size, in which case we may be toast.) We
8558 should really be keeping track of the total size of stubs
8559 added here, as stubs contribute to the final output
8560 section size. That's a little tricky, and this way will
8561 only break if stubs added make the total size more than
8562 2^25, ie. for the default stub_group_size, if stubs total
8563 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8566 prev = PREV_SEC (tail);
8567 /* Set up this stub group. */
8568 htab->stub_group[tail->id].link_sec = curr;
8570 while (tail != curr && (tail = prev) != NULL);
8572 /* But wait, there's more! Input sections up to stub_group_size
8573 bytes before the stub section can be handled by it too.
8574 Don't do this if we have a really large section after the
8575 stubs, as adding more stubs increases the chance that
8576 branches may not reach into the stub section. */
8577 if (!stubs_always_before_branch && !big_sec)
8581 && ((total += tail->output_offset - prev->output_offset)
8583 && htab->stub_group[prev->id].toc_off == curr_toc)
8586 prev = PREV_SEC (tail);
8587 htab->stub_group[tail->id].link_sec = curr;
8593 while (list-- != htab->input_list);
8594 free (htab->input_list);
8598 /* Determine and set the size of the stub section for a final link.
8600 The basic idea here is to examine all the relocations looking for
8601 PC-relative calls to a target that is unreachable with a "bl"
8605 ppc64_elf_size_stubs (bfd *output_bfd,
8606 struct bfd_link_info *info,
8607 bfd_signed_vma group_size,
8608 asection *(*add_stub_section) (const char *, asection *),
8609 void (*layout_sections_again) (void))
8611 bfd_size_type stub_group_size;
8612 bfd_boolean stubs_always_before_branch;
8613 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8615 /* Stash our params away. */
8616 htab->add_stub_section = add_stub_section;
8617 htab->layout_sections_again = layout_sections_again;
8618 stubs_always_before_branch = group_size < 0;
8620 stub_group_size = -group_size;
8622 stub_group_size = group_size;
8623 if (stub_group_size == 1)
8625 /* Default values. */
8626 if (stubs_always_before_branch)
8628 stub_group_size = 0x1e00000;
8629 if (htab->has_14bit_branch)
8630 stub_group_size = 0x7800;
8634 stub_group_size = 0x1c00000;
8635 if (htab->has_14bit_branch)
8636 stub_group_size = 0x7000;
8640 group_sections (htab, stub_group_size, stubs_always_before_branch);
8645 unsigned int bfd_indx;
8647 bfd_boolean stub_changed;
8649 htab->stub_iteration += 1;
8650 stub_changed = FALSE;
8652 for (input_bfd = info->input_bfds, bfd_indx = 0;
8654 input_bfd = input_bfd->link_next, bfd_indx++)
8656 Elf_Internal_Shdr *symtab_hdr;
8658 Elf_Internal_Sym *local_syms = NULL;
8660 /* We'll need the symbol table in a second. */
8661 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8662 if (symtab_hdr->sh_info == 0)
8665 /* Walk over each section attached to the input bfd. */
8666 for (section = input_bfd->sections;
8668 section = section->next)
8670 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
8672 /* If there aren't any relocs, then there's nothing more
8674 if ((section->flags & SEC_RELOC) == 0
8675 || section->reloc_count == 0)
8678 /* If this section is a link-once section that will be
8679 discarded, then don't create any stubs. */
8680 if (section->output_section == NULL
8681 || section->output_section->owner != output_bfd)
8684 /* Get the relocs. */
8686 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
8688 if (internal_relocs == NULL)
8689 goto error_ret_free_local;
8691 /* Now examine each relocation. */
8692 irela = internal_relocs;
8693 irelaend = irela + section->reloc_count;
8694 for (; irela < irelaend; irela++)
8696 enum elf_ppc64_reloc_type r_type;
8697 unsigned int r_indx;
8698 enum ppc_stub_type stub_type;
8699 struct ppc_stub_hash_entry *stub_entry;
8700 asection *sym_sec, *code_sec;
8702 bfd_vma destination;
8703 bfd_boolean ok_dest;
8704 struct ppc_link_hash_entry *hash;
8705 struct ppc_link_hash_entry *fdh;
8706 struct elf_link_hash_entry *h;
8707 Elf_Internal_Sym *sym;
8709 const asection *id_sec;
8712 r_type = ELF64_R_TYPE (irela->r_info);
8713 r_indx = ELF64_R_SYM (irela->r_info);
8715 if (r_type >= R_PPC64_max)
8717 bfd_set_error (bfd_error_bad_value);
8718 goto error_ret_free_internal;
8721 /* Only look for stubs on branch instructions. */
8722 if (r_type != R_PPC64_REL24
8723 && r_type != R_PPC64_REL14
8724 && r_type != R_PPC64_REL14_BRTAKEN
8725 && r_type != R_PPC64_REL14_BRNTAKEN)
8728 /* Now determine the call target, its name, value,
8730 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8732 goto error_ret_free_internal;
8733 hash = (struct ppc_link_hash_entry *) h;
8739 sym_value = sym->st_value;
8745 /* Recognise an old ABI func code entry sym, and
8746 use the func descriptor sym instead. */
8747 if (hash->elf.root.type == bfd_link_hash_undefweak
8748 && hash->elf.root.root.string[0] == '.'
8749 && (fdh = get_fdh (hash, htab)) != NULL)
8751 if (fdh->elf.root.type == bfd_link_hash_defined
8752 || fdh->elf.root.type == bfd_link_hash_defweak)
8754 sym_sec = fdh->elf.root.u.def.section;
8755 sym_value = fdh->elf.root.u.def.value;
8756 if (sym_sec->output_section != NULL)
8762 else if (hash->elf.root.type == bfd_link_hash_defined
8763 || hash->elf.root.type == bfd_link_hash_defweak)
8765 sym_value = hash->elf.root.u.def.value;
8766 if (sym_sec->output_section != NULL)
8769 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8771 else if (hash->elf.root.type == bfd_link_hash_undefined)
8775 bfd_set_error (bfd_error_bad_value);
8776 goto error_ret_free_internal;
8783 sym_value += irela->r_addend;
8784 destination = (sym_value
8785 + sym_sec->output_offset
8786 + sym_sec->output_section->vma);
8790 opd_adjust = get_opd_info (sym_sec);
8791 if (opd_adjust != NULL)
8797 long adjust = opd_adjust[sym_value / 8];
8800 sym_value += adjust;
8802 dest = opd_entry_value (sym_sec, sym_value,
8803 &code_sec, &sym_value);
8804 if (dest != (bfd_vma) -1)
8809 /* Fixup old ABI sym to point at code
8811 hash->elf.root.type = bfd_link_hash_defweak;
8812 hash->elf.root.u.def.section = code_sec;
8813 hash->elf.root.u.def.value = sym_value;
8818 /* Determine what (if any) linker stub is needed. */
8819 stub_type = ppc_type_of_stub (section, irela, &hash,
8822 if (stub_type != ppc_stub_plt_call)
8824 /* Check whether we need a TOC adjusting stub.
8825 Since the linker pastes together pieces from
8826 different object files when creating the
8827 _init and _fini functions, it may be that a
8828 call to what looks like a local sym is in
8829 fact a call needing a TOC adjustment. */
8830 if (code_sec != NULL
8831 && code_sec->output_section != NULL
8832 && (htab->stub_group[code_sec->id].toc_off
8833 != htab->stub_group[section->id].toc_off)
8834 && (code_sec->has_toc_reloc
8835 || code_sec->makes_toc_func_call))
8836 stub_type = ppc_stub_long_branch_r2off;
8839 if (stub_type == ppc_stub_none)
8842 /* __tls_get_addr calls might be eliminated. */
8843 if (stub_type != ppc_stub_plt_call
8845 && (hash == htab->tls_get_addr
8846 || hash == htab->tls_get_addr_fd)
8847 && section->has_tls_reloc
8848 && irela != internal_relocs)
8853 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
8854 irela - 1, input_bfd))
8855 goto error_ret_free_internal;
8860 /* Support for grouping stub sections. */
8861 id_sec = htab->stub_group[section->id].link_sec;
8863 /* Get the name of this stub. */
8864 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
8866 goto error_ret_free_internal;
8868 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
8869 stub_name, FALSE, FALSE);
8870 if (stub_entry != NULL)
8872 /* The proper stub has already been created. */
8877 stub_entry = ppc_add_stub (stub_name, section, htab);
8878 if (stub_entry == NULL)
8881 error_ret_free_internal:
8882 if (elf_section_data (section)->relocs == NULL)
8883 free (internal_relocs);
8884 error_ret_free_local:
8885 if (local_syms != NULL
8886 && (symtab_hdr->contents
8887 != (unsigned char *) local_syms))
8892 stub_entry->stub_type = stub_type;
8893 stub_entry->target_value = sym_value;
8894 stub_entry->target_section = code_sec;
8895 stub_entry->h = hash;
8896 stub_entry->addend = irela->r_addend;
8898 if (stub_entry->h != NULL)
8899 htab->stub_globals += 1;
8901 stub_changed = TRUE;
8904 /* We're done with the internal relocs, free them. */
8905 if (elf_section_data (section)->relocs != internal_relocs)
8906 free (internal_relocs);
8909 if (local_syms != NULL
8910 && symtab_hdr->contents != (unsigned char *) local_syms)
8912 if (!info->keep_memory)
8915 symtab_hdr->contents = (unsigned char *) local_syms;
8922 /* OK, we've added some stubs. Find out the new size of the
8924 for (stub_sec = htab->stub_bfd->sections;
8926 stub_sec = stub_sec->next)
8927 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
8930 stub_sec->reloc_count = 0;
8933 htab->brlt->size = 0;
8934 if (htab->relbrlt != NULL)
8935 htab->relbrlt->size = 0;
8937 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
8939 /* Ask the linker to do its stuff. */
8940 (*htab->layout_sections_again) ();
8943 /* It would be nice to strip .branch_lt from the output if the
8944 section is empty, but it's too late. If we strip sections here,
8945 the dynamic symbol table is corrupted since the section symbol
8946 for the stripped section isn't written. */
8951 /* Called after we have determined section placement. If sections
8952 move, we'll be called again. Provide a value for TOCstart. */
8955 ppc64_elf_toc (bfd *obfd)
8960 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8961 order. The TOC starts where the first of these sections starts. */
8962 s = bfd_get_section_by_name (obfd, ".got");
8964 s = bfd_get_section_by_name (obfd, ".toc");
8966 s = bfd_get_section_by_name (obfd, ".tocbss");
8968 s = bfd_get_section_by_name (obfd, ".plt");
8971 /* This may happen for
8972 o references to TOC base (SYM@toc / TOC[tc0]) without a
8975 o --gc-sections and empty TOC sections
8977 FIXME: Warn user? */
8979 /* Look for a likely section. We probably won't even be
8981 for (s = obfd->sections; s != NULL; s = s->next)
8982 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
8983 == (SEC_ALLOC | SEC_SMALL_DATA))
8986 for (s = obfd->sections; s != NULL; s = s->next)
8987 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
8988 == (SEC_ALLOC | SEC_SMALL_DATA))
8991 for (s = obfd->sections; s != NULL; s = s->next)
8992 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
8995 for (s = obfd->sections; s != NULL; s = s->next)
8996 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9002 TOCstart = s->output_section->vma + s->output_offset;
9007 /* Build all the stubs associated with the current output file.
9008 The stubs are kept in a hash table attached to the main linker
9009 hash table. This function is called via gldelf64ppc_finish. */
9012 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9013 struct bfd_link_info *info,
9016 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9019 int stub_sec_count = 0;
9021 htab->emit_stub_syms = emit_stub_syms;
9023 /* Allocate memory to hold the linker stubs. */
9024 for (stub_sec = htab->stub_bfd->sections;
9026 stub_sec = stub_sec->next)
9027 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9028 && stub_sec->size != 0)
9030 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9031 if (stub_sec->contents == NULL)
9033 /* We want to check that built size is the same as calculated
9034 size. rawsize is a convenient location to use. */
9035 stub_sec->rawsize = stub_sec->size;
9039 if (htab->plt != NULL)
9044 /* Build the .glink plt call stub. */
9045 plt0 = (htab->plt->output_section->vma
9046 + htab->plt->output_offset
9047 - (htab->glink->output_section->vma
9048 + htab->glink->output_offset
9049 + GLINK_CALL_STUB_SIZE));
9050 if (plt0 + 0x80008000 > 0xffffffff)
9052 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9053 bfd_set_error (bfd_error_bad_value);
9057 if (htab->emit_stub_syms)
9059 struct elf_link_hash_entry *h;
9060 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9063 if (h->root.type == bfd_link_hash_new)
9065 h->root.type = bfd_link_hash_defined;
9066 h->root.u.def.section = htab->glink;
9067 h->root.u.def.value = 0;
9070 h->ref_regular_nonweak = 1;
9071 h->forced_local = 1;
9075 p = htab->glink->contents;
9076 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
9078 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
9080 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
9082 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9084 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
9086 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
9088 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
9090 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9092 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
9094 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
9096 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
9098 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
9100 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
9102 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
9104 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
9106 bfd_put_32 (htab->glink->owner, BCTR, p);
9109 /* Build the .glink lazy link call stubs. */
9111 while (p < htab->glink->contents + htab->glink->size)
9115 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9120 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9122 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9125 bfd_put_32 (htab->glink->owner,
9126 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
9130 htab->glink->rawsize = p - htab->glink->contents;
9133 if (htab->brlt->size != 0)
9135 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
9137 if (htab->brlt->contents == NULL)
9140 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
9142 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
9143 htab->relbrlt->size);
9144 if (htab->relbrlt->contents == NULL)
9148 /* Build the stubs as directed by the stub hash table. */
9149 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
9151 for (stub_sec = htab->stub_bfd->sections;
9153 stub_sec = stub_sec->next)
9154 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9156 stub_sec_count += 1;
9157 if (stub_sec->rawsize != stub_sec->size)
9161 if (stub_sec != NULL
9162 || htab->glink->rawsize != htab->glink->size)
9164 htab->stub_error = TRUE;
9165 (*_bfd_error_handler) (_("stubs don't match calculated size"));
9168 if (htab->stub_error)
9173 *stats = bfd_malloc (500);
9177 sprintf (*stats, _("linker stubs in %u group%s\n"
9180 " long branch %lu\n"
9181 " long toc adj %lu\n"
9184 stub_sec_count == 1 ? "" : "s",
9185 htab->stub_count[ppc_stub_long_branch - 1],
9186 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9187 htab->stub_count[ppc_stub_plt_branch - 1],
9188 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9189 htab->stub_count[ppc_stub_plt_call - 1]);
9194 /* This function undoes the changes made by add_symbol_adjust. */
9197 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9199 struct ppc_link_hash_entry *eh;
9201 if (h->root.type == bfd_link_hash_indirect)
9204 if (h->root.type == bfd_link_hash_warning)
9205 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9207 eh = (struct ppc_link_hash_entry *) h;
9208 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9211 eh->elf.root.type = bfd_link_hash_undefined;
9216 ppc64_elf_restore_symbols (struct bfd_link_info *info)
9218 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9219 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9222 /* The RELOCATE_SECTION function is called by the ELF backend linker
9223 to handle the relocations for a section.
9225 The relocs are always passed as Rela structures; if the section
9226 actually uses Rel structures, the r_addend field will always be
9229 This function is responsible for adjust the section contents as
9230 necessary, and (if using Rela relocs and generating a
9231 relocatable output file) adjusting the reloc addend as
9234 This function does not have to worry about setting the reloc
9235 address or the reloc symbol index.
9237 LOCAL_SYMS is a pointer to the swapped in local symbols.
9239 LOCAL_SECTIONS is an array giving the section in the input file
9240 corresponding to the st_shndx field of each local symbol.
9242 The global hash table entry for the global symbols can be found
9243 via elf_sym_hashes (input_bfd).
9245 When generating relocatable output, this function must handle
9246 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9247 going to be the section symbol corresponding to the output
9248 section, which means that the addend must be adjusted
9252 ppc64_elf_relocate_section (bfd *output_bfd,
9253 struct bfd_link_info *info,
9255 asection *input_section,
9257 Elf_Internal_Rela *relocs,
9258 Elf_Internal_Sym *local_syms,
9259 asection **local_sections)
9261 struct ppc_link_hash_table *htab;
9262 Elf_Internal_Shdr *symtab_hdr;
9263 struct elf_link_hash_entry **sym_hashes;
9264 Elf_Internal_Rela *rel;
9265 Elf_Internal_Rela *relend;
9266 Elf_Internal_Rela outrel;
9268 struct got_entry **local_got_ents;
9270 bfd_boolean ret = TRUE;
9272 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9273 bfd_boolean is_power4 = FALSE;
9275 if (info->relocatable)
9278 /* Initialize howto table if needed. */
9279 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9282 htab = ppc_hash_table (info);
9284 /* Don't relocate stub sections. */
9285 if (input_section->owner == htab->stub_bfd)
9288 local_got_ents = elf_local_got_ents (input_bfd);
9289 TOCstart = elf_gp (output_bfd);
9290 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9291 sym_hashes = elf_sym_hashes (input_bfd);
9292 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
9295 relend = relocs + input_section->reloc_count;
9296 for (; rel < relend; rel++)
9298 enum elf_ppc64_reloc_type r_type;
9300 bfd_reloc_status_type r;
9301 Elf_Internal_Sym *sym;
9303 struct elf_link_hash_entry *h_elf;
9304 struct ppc_link_hash_entry *h;
9305 struct ppc_link_hash_entry *fdh;
9306 const char *sym_name;
9307 unsigned long r_symndx, toc_symndx;
9308 char tls_mask, tls_gd, tls_type;
9311 bfd_boolean unresolved_reloc;
9313 unsigned long insn, mask;
9314 struct ppc_stub_hash_entry *stub_entry;
9315 bfd_vma max_br_offset;
9318 r_type = ELF64_R_TYPE (rel->r_info);
9319 r_symndx = ELF64_R_SYM (rel->r_info);
9321 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9322 symbol of the previous ADDR64 reloc. The symbol gives us the
9323 proper TOC base to use. */
9324 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9326 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9328 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9334 unresolved_reloc = FALSE;
9337 if (r_symndx < symtab_hdr->sh_info)
9339 /* It's a local symbol. */
9342 sym = local_syms + r_symndx;
9343 sec = local_sections[r_symndx];
9344 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
9345 sym_type = ELF64_ST_TYPE (sym->st_info);
9346 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
9347 opd_adjust = get_opd_info (sec);
9348 if (opd_adjust != NULL)
9350 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
9354 relocation += adjust;
9359 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9360 r_symndx, symtab_hdr, sym_hashes,
9361 h_elf, sec, relocation,
9362 unresolved_reloc, warned);
9363 sym_name = h_elf->root.root.string;
9364 sym_type = h_elf->type;
9366 h = (struct ppc_link_hash_entry *) h_elf;
9368 /* TLS optimizations. Replace instruction sequences and relocs
9369 based on information we collected in tls_optimize. We edit
9370 RELOCS so that --emit-relocs will output something sensible
9371 for the final instruction stream. */
9375 if (IS_PPC64_TLS_RELOC (r_type))
9378 tls_mask = h->tls_mask;
9379 else if (local_got_ents != NULL)
9382 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9383 tls_mask = lgot_masks[r_symndx];
9385 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9387 /* Check for toc tls entries. */
9390 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9395 tls_mask = *toc_tls;
9399 /* Check that tls relocs are used with tls syms, and non-tls
9400 relocs are used with non-tls syms. */
9402 && r_type != R_PPC64_NONE
9404 || h->elf.root.type == bfd_link_hash_defined
9405 || h->elf.root.type == bfd_link_hash_defweak)
9406 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9408 if (r_type == R_PPC64_TLS && tls_mask != 0)
9409 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9412 (*_bfd_error_handler)
9413 (sym_type == STT_TLS
9414 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9415 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9418 (long) rel->r_offset,
9419 ppc64_elf_howto_table[r_type]->name,
9423 /* Ensure reloc mapping code below stays sane. */
9424 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9425 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9426 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9427 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9428 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9429 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9430 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9431 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9432 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9433 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9442 case R_PPC64_TOC16_LO:
9443 case R_PPC64_TOC16_DS:
9444 case R_PPC64_TOC16_LO_DS:
9446 /* Check for toc tls entries. */
9450 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9457 tls_mask = *toc_tls;
9458 if (r_type == R_PPC64_TOC16_DS
9459 || r_type == R_PPC64_TOC16_LO_DS)
9462 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9467 /* If we found a GD reloc pair, then we might be
9468 doing a GD->IE transition. */
9471 tls_gd = TLS_TPRELGD;
9472 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9473 goto tls_get_addr_check;
9475 else if (retval == 3)
9477 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9478 goto tls_get_addr_check;
9485 case R_PPC64_GOT_TPREL16_DS:
9486 case R_PPC64_GOT_TPREL16_LO_DS:
9488 && (tls_mask & TLS_TPREL) == 0)
9491 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9493 insn |= 0x3c0d0000; /* addis 0,13,0 */
9494 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9495 r_type = R_PPC64_TPREL16_HA;
9496 if (toc_symndx != 0)
9498 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9499 /* We changed the symbol. Start over in order to
9500 get h, sym, sec etc. right. */
9505 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9511 && (tls_mask & TLS_TPREL) == 0)
9514 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9515 if ((insn & ((0x3f << 26) | (31 << 11)))
9516 == ((31 << 26) | (13 << 11)))
9517 rtra = insn & ((1 << 26) - (1 << 16));
9518 else if ((insn & ((0x3f << 26) | (31 << 16)))
9519 == ((31 << 26) | (13 << 16)))
9520 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9523 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9526 else if ((insn & (31 << 1)) == 23 << 1
9527 && ((insn & (31 << 6)) < 14 << 6
9528 || ((insn & (31 << 6)) >= 16 << 6
9529 && (insn & (31 << 6)) < 24 << 6)))
9530 /* load and store indexed -> dform. */
9531 insn = (32 | ((insn >> 6) & 31)) << 26;
9532 else if ((insn & (31 << 1)) == 21 << 1
9533 && (insn & (0x1a << 6)) == 0)
9534 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9535 insn = (((58 | ((insn >> 6) & 4)) << 26)
9536 | ((insn >> 6) & 1));
9537 else if ((insn & (31 << 1)) == 21 << 1
9538 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9540 insn = (58 << 26) | 2;
9544 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9545 /* Was PPC64_TLS which sits on insn boundary, now
9546 PPC64_TPREL16_LO which is at insn+2. */
9548 r_type = R_PPC64_TPREL16_LO;
9549 if (toc_symndx != 0)
9551 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9552 /* We changed the symbol. Start over in order to
9553 get h, sym, sec etc. right. */
9558 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9562 case R_PPC64_GOT_TLSGD16_HI:
9563 case R_PPC64_GOT_TLSGD16_HA:
9564 tls_gd = TLS_TPRELGD;
9565 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9569 case R_PPC64_GOT_TLSLD16_HI:
9570 case R_PPC64_GOT_TLSLD16_HA:
9571 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9574 if ((tls_mask & tls_gd) != 0)
9575 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9576 + R_PPC64_GOT_TPREL16_DS);
9579 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9581 r_type = R_PPC64_NONE;
9583 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9587 case R_PPC64_GOT_TLSGD16:
9588 case R_PPC64_GOT_TLSGD16_LO:
9589 tls_gd = TLS_TPRELGD;
9590 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9591 goto tls_get_addr_check;
9594 case R_PPC64_GOT_TLSLD16:
9595 case R_PPC64_GOT_TLSLD16_LO:
9596 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9599 if (rel + 1 < relend)
9601 enum elf_ppc64_reloc_type r_type2;
9602 unsigned long r_symndx2;
9603 struct elf_link_hash_entry *h2;
9604 bfd_vma insn1, insn2, insn3;
9607 /* The next instruction should be a call to
9608 __tls_get_addr. Peek at the reloc to be sure. */
9609 r_type2 = ELF64_R_TYPE (rel[1].r_info);
9610 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9611 if (r_symndx2 < symtab_hdr->sh_info
9612 || (r_type2 != R_PPC64_REL14
9613 && r_type2 != R_PPC64_REL14_BRTAKEN
9614 && r_type2 != R_PPC64_REL14_BRNTAKEN
9615 && r_type2 != R_PPC64_REL24))
9618 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9619 while (h2->root.type == bfd_link_hash_indirect
9620 || h2->root.type == bfd_link_hash_warning)
9621 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
9622 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9623 && h2 != &htab->tls_get_addr_fd->elf))
9626 /* OK, it checks out. Replace the call. */
9627 offset = rel[1].r_offset;
9628 insn1 = bfd_get_32 (output_bfd,
9629 contents + rel->r_offset - 2);
9630 insn3 = bfd_get_32 (output_bfd,
9631 contents + offset + 4);
9632 if ((tls_mask & tls_gd) != 0)
9635 insn1 &= (1 << 26) - (1 << 2);
9636 insn1 |= 58 << 26; /* ld */
9637 insn2 = 0x7c636a14; /* add 3,3,13 */
9638 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9639 if ((tls_mask & TLS_EXPLICIT) == 0)
9640 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9641 + R_PPC64_GOT_TPREL16_DS);
9643 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9644 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9649 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9650 insn2 = 0x38630000; /* addi 3,3,0 */
9653 /* Was an LD reloc. */
9655 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9656 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9658 else if (toc_symndx != 0)
9659 r_symndx = toc_symndx;
9660 r_type = R_PPC64_TPREL16_HA;
9661 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9662 rel[1].r_info = ELF64_R_INFO (r_symndx,
9663 R_PPC64_TPREL16_LO);
9664 rel[1].r_offset += 2;
9667 || insn3 == CROR_151515 || insn3 == CROR_313131)
9671 rel[1].r_offset += 4;
9673 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9674 bfd_put_32 (output_bfd, insn2, contents + offset);
9675 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
9676 if (tls_gd == 0 || toc_symndx != 0)
9678 /* We changed the symbol. Start over in order
9679 to get h, sym, sec etc. right. */
9687 case R_PPC64_DTPMOD64:
9688 if (rel + 1 < relend
9689 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9690 && rel[1].r_offset == rel->r_offset + 8)
9692 if ((tls_mask & TLS_GD) == 0)
9694 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9695 if ((tls_mask & TLS_TPRELGD) != 0)
9696 r_type = R_PPC64_TPREL64;
9699 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9700 r_type = R_PPC64_NONE;
9702 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9707 if ((tls_mask & TLS_LD) == 0)
9709 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9710 r_type = R_PPC64_NONE;
9711 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9716 case R_PPC64_TPREL64:
9717 if ((tls_mask & TLS_TPREL) == 0)
9719 r_type = R_PPC64_NONE;
9720 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9725 /* Handle other relocations that tweak non-addend part of insn. */
9727 max_br_offset = 1 << 25;
9728 addend = rel->r_addend;
9734 /* Branch taken prediction relocations. */
9735 case R_PPC64_ADDR14_BRTAKEN:
9736 case R_PPC64_REL14_BRTAKEN:
9737 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9740 /* Branch not taken prediction relocations. */
9741 case R_PPC64_ADDR14_BRNTAKEN:
9742 case R_PPC64_REL14_BRNTAKEN:
9743 insn |= bfd_get_32 (output_bfd,
9744 contents + rel->r_offset) & ~(0x01 << 21);
9748 max_br_offset = 1 << 15;
9752 /* Calls to functions with a different TOC, such as calls to
9753 shared objects, need to alter the TOC pointer. This is
9754 done using a linkage stub. A REL24 branching to these
9755 linkage stubs needs to be followed by a nop, as the nop
9756 will be replaced with an instruction to restore the TOC
9761 && (((fdh = h->oh) != NULL
9762 && fdh->elf.plt.plist != NULL)
9763 || (fdh = h)->elf.plt.plist != NULL))
9765 && sec->output_section != NULL
9766 && sec->id <= htab->top_id
9767 && (htab->stub_group[sec->id].toc_off
9768 != htab->stub_group[input_section->id].toc_off)))
9769 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
9771 && (stub_entry->stub_type == ppc_stub_plt_call
9772 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9773 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
9775 bfd_boolean can_plt_call = FALSE;
9777 if (rel->r_offset + 8 <= input_section->size)
9780 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9782 || nop == CROR_151515 || nop == CROR_313131)
9784 bfd_put_32 (input_bfd, LD_R2_40R1,
9785 contents + rel->r_offset + 4);
9786 can_plt_call = TRUE;
9792 if (stub_entry->stub_type == ppc_stub_plt_call)
9794 /* If this is a plain branch rather than a branch
9795 and link, don't require a nop. */
9797 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9799 can_plt_call = TRUE;
9802 && strcmp (h->elf.root.root.string,
9803 ".__libc_start_main") == 0)
9805 /* Allow crt1 branch to go via a toc adjusting stub. */
9806 can_plt_call = TRUE;
9810 if (strcmp (input_section->output_section->name,
9812 || strcmp (input_section->output_section->name,
9814 (*_bfd_error_handler)
9815 (_("%B(%A+0x%lx): automatic multiple TOCs "
9816 "not supported using your crt files; "
9817 "recompile with -mminimal-toc or upgrade gcc"),
9820 (long) rel->r_offset);
9822 (*_bfd_error_handler)
9823 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9824 "does not allow automatic multiple TOCs; "
9825 "recompile with -mminimal-toc or "
9826 "-fno-optimize-sibling-calls, "
9827 "or make `%s' extern"),
9830 (long) rel->r_offset,
9833 bfd_set_error (bfd_error_bad_value);
9839 && stub_entry->stub_type == ppc_stub_plt_call)
9840 unresolved_reloc = FALSE;
9843 if (stub_entry == NULL
9844 && get_opd_info (sec) != NULL)
9846 /* The branch destination is the value of the opd entry. */
9847 bfd_vma off = (relocation - sec->output_section->vma
9848 - sec->output_offset + rel->r_addend);
9849 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9850 if (dest != (bfd_vma) -1)
9857 /* If the branch is out of reach we ought to have a long
9859 from = (rel->r_offset
9860 + input_section->output_offset
9861 + input_section->output_section->vma);
9863 if (stub_entry == NULL
9864 && (relocation + rel->r_addend - from + max_br_offset
9865 >= 2 * max_br_offset)
9866 && r_type != R_PPC64_ADDR14_BRTAKEN
9867 && r_type != R_PPC64_ADDR14_BRNTAKEN)
9868 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
9871 if (stub_entry != NULL)
9873 /* Munge up the value and addend so that we call the stub
9874 rather than the procedure directly. */
9875 relocation = (stub_entry->stub_offset
9876 + stub_entry->stub_sec->output_offset
9877 + stub_entry->stub_sec->output_section->vma);
9885 /* Set 'a' bit. This is 0b00010 in BO field for branch
9886 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9887 for branch on CTR insns (BO == 1a00t or 1a01t). */
9888 if ((insn & (0x14 << 21)) == (0x04 << 21))
9890 else if ((insn & (0x14 << 21)) == (0x10 << 21))
9897 /* Invert 'y' bit if not the default. */
9898 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
9902 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9905 /* NOP out calls to undefined weak functions.
9906 We can thus call a weak function without first
9907 checking whether the function is defined. */
9909 && h->elf.root.type == bfd_link_hash_undefweak
9910 && r_type == R_PPC64_REL24
9912 && rel->r_addend == 0)
9914 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9925 (*_bfd_error_handler)
9926 (_("%B: unknown relocation type %d for symbol %s"),
9927 input_bfd, (int) r_type, sym_name);
9929 bfd_set_error (bfd_error_bad_value);
9935 case R_PPC64_GNU_VTINHERIT:
9936 case R_PPC64_GNU_VTENTRY:
9939 /* GOT16 relocations. Like an ADDR16 using the symbol's
9940 address in the GOT as relocation value instead of the
9941 symbol's value itself. Also, create a GOT entry for the
9942 symbol and put the symbol value there. */
9943 case R_PPC64_GOT_TLSGD16:
9944 case R_PPC64_GOT_TLSGD16_LO:
9945 case R_PPC64_GOT_TLSGD16_HI:
9946 case R_PPC64_GOT_TLSGD16_HA:
9947 tls_type = TLS_TLS | TLS_GD;
9950 case R_PPC64_GOT_TLSLD16:
9951 case R_PPC64_GOT_TLSLD16_LO:
9952 case R_PPC64_GOT_TLSLD16_HI:
9953 case R_PPC64_GOT_TLSLD16_HA:
9954 tls_type = TLS_TLS | TLS_LD;
9957 case R_PPC64_GOT_TPREL16_DS:
9958 case R_PPC64_GOT_TPREL16_LO_DS:
9959 case R_PPC64_GOT_TPREL16_HI:
9960 case R_PPC64_GOT_TPREL16_HA:
9961 tls_type = TLS_TLS | TLS_TPREL;
9964 case R_PPC64_GOT_DTPREL16_DS:
9965 case R_PPC64_GOT_DTPREL16_LO_DS:
9966 case R_PPC64_GOT_DTPREL16_HI:
9967 case R_PPC64_GOT_DTPREL16_HA:
9968 tls_type = TLS_TLS | TLS_DTPREL;
9972 case R_PPC64_GOT16_LO:
9973 case R_PPC64_GOT16_HI:
9974 case R_PPC64_GOT16_HA:
9975 case R_PPC64_GOT16_DS:
9976 case R_PPC64_GOT16_LO_DS:
9979 /* Relocation is to the entry for this symbol in the global
9984 unsigned long indx = 0;
9986 if (tls_type == (TLS_TLS | TLS_LD)
9988 || !h->elf.def_dynamic))
9989 offp = &ppc64_tlsld_got (input_bfd)->offset;
9992 struct got_entry *ent;
9996 bfd_boolean dyn = htab->elf.dynamic_sections_created;
9997 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10000 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
10001 /* This is actually a static link, or it is a
10002 -Bsymbolic link and the symbol is defined
10003 locally, or the symbol was forced to be local
10004 because of a version file. */
10008 indx = h->elf.dynindx;
10009 unresolved_reloc = FALSE;
10011 ent = h->elf.got.glist;
10015 if (local_got_ents == NULL)
10017 ent = local_got_ents[r_symndx];
10020 for (; ent != NULL; ent = ent->next)
10021 if (ent->addend == rel->r_addend
10022 && ent->owner == input_bfd
10023 && ent->tls_type == tls_type)
10027 offp = &ent->got.offset;
10030 got = ppc64_elf_tdata (input_bfd)->got;
10034 /* The offset must always be a multiple of 8. We use the
10035 least significant bit to record whether we have already
10036 processed this entry. */
10038 if ((off & 1) != 0)
10042 /* Generate relocs for the dynamic linker, except in
10043 the case of TLSLD where we'll use one entry per
10045 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10048 if ((info->shared || indx != 0)
10050 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10051 || h->elf.root.type != bfd_link_hash_undefweak))
10053 outrel.r_offset = (got->output_section->vma
10054 + got->output_offset
10056 outrel.r_addend = rel->r_addend;
10057 if (tls_type & (TLS_LD | TLS_GD))
10059 outrel.r_addend = 0;
10060 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
10061 if (tls_type == (TLS_TLS | TLS_GD))
10063 loc = relgot->contents;
10064 loc += (relgot->reloc_count++
10065 * sizeof (Elf64_External_Rela));
10066 bfd_elf64_swap_reloca_out (output_bfd,
10068 outrel.r_offset += 8;
10069 outrel.r_addend = rel->r_addend;
10071 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10074 else if (tls_type == (TLS_TLS | TLS_DTPREL))
10075 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10076 else if (tls_type == (TLS_TLS | TLS_TPREL))
10077 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10078 else if (indx == 0)
10080 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10082 /* Write the .got section contents for the sake
10084 loc = got->contents + off;
10085 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10089 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
10091 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
10093 outrel.r_addend += relocation;
10094 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
10095 outrel.r_addend -= htab->elf.tls_sec->vma;
10097 loc = relgot->contents;
10098 loc += (relgot->reloc_count++
10099 * sizeof (Elf64_External_Rela));
10100 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10103 /* Init the .got section contents here if we're not
10104 emitting a reloc. */
10107 relocation += rel->r_addend;
10108 if (tls_type == (TLS_TLS | TLS_LD))
10110 else if (tls_type != 0)
10112 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
10113 if (tls_type == (TLS_TLS | TLS_TPREL))
10114 relocation += DTP_OFFSET - TP_OFFSET;
10116 if (tls_type == (TLS_TLS | TLS_GD))
10118 bfd_put_64 (output_bfd, relocation,
10119 got->contents + off + 8);
10124 bfd_put_64 (output_bfd, relocation,
10125 got->contents + off);
10129 if (off >= (bfd_vma) -2)
10132 relocation = got->output_offset + off;
10134 /* TOC base (r2) is TOC start plus 0x8000. */
10135 addend = -TOC_BASE_OFF;
10139 case R_PPC64_PLT16_HA:
10140 case R_PPC64_PLT16_HI:
10141 case R_PPC64_PLT16_LO:
10142 case R_PPC64_PLT32:
10143 case R_PPC64_PLT64:
10144 /* Relocation is to the entry for this symbol in the
10145 procedure linkage table. */
10147 /* Resolve a PLT reloc against a local symbol directly,
10148 without using the procedure linkage table. */
10152 /* It's possible that we didn't make a PLT entry for this
10153 symbol. This happens when statically linking PIC code,
10154 or when using -Bsymbolic. Go find a match if there is a
10156 if (htab->plt != NULL)
10158 struct plt_entry *ent;
10159 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
10160 if (ent->addend == rel->r_addend
10161 && ent->plt.offset != (bfd_vma) -1)
10163 relocation = (htab->plt->output_section->vma
10164 + htab->plt->output_offset
10165 + ent->plt.offset);
10166 unresolved_reloc = FALSE;
10172 /* Relocation value is TOC base. */
10173 relocation = TOCstart;
10175 relocation += htab->stub_group[input_section->id].toc_off;
10176 else if (unresolved_reloc)
10178 else if (sec != NULL && sec->id <= htab->top_id)
10179 relocation += htab->stub_group[sec->id].toc_off;
10181 unresolved_reloc = TRUE;
10184 /* TOC16 relocs. We want the offset relative to the TOC base,
10185 which is the address of the start of the TOC plus 0x8000.
10186 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10188 case R_PPC64_TOC16:
10189 case R_PPC64_TOC16_LO:
10190 case R_PPC64_TOC16_HI:
10191 case R_PPC64_TOC16_DS:
10192 case R_PPC64_TOC16_LO_DS:
10193 case R_PPC64_TOC16_HA:
10194 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
10197 /* Relocate against the beginning of the section. */
10198 case R_PPC64_SECTOFF:
10199 case R_PPC64_SECTOFF_LO:
10200 case R_PPC64_SECTOFF_HI:
10201 case R_PPC64_SECTOFF_DS:
10202 case R_PPC64_SECTOFF_LO_DS:
10203 case R_PPC64_SECTOFF_HA:
10205 addend -= sec->output_section->vma;
10208 case R_PPC64_REL14:
10209 case R_PPC64_REL14_BRNTAKEN:
10210 case R_PPC64_REL14_BRTAKEN:
10211 case R_PPC64_REL24:
10214 case R_PPC64_TPREL16:
10215 case R_PPC64_TPREL16_LO:
10216 case R_PPC64_TPREL16_HI:
10217 case R_PPC64_TPREL16_HA:
10218 case R_PPC64_TPREL16_DS:
10219 case R_PPC64_TPREL16_LO_DS:
10220 case R_PPC64_TPREL16_HIGHER:
10221 case R_PPC64_TPREL16_HIGHERA:
10222 case R_PPC64_TPREL16_HIGHEST:
10223 case R_PPC64_TPREL16_HIGHESTA:
10224 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10226 /* The TPREL16 relocs shouldn't really be used in shared
10227 libs as they will result in DT_TEXTREL being set, but
10228 support them anyway. */
10232 case R_PPC64_DTPREL16:
10233 case R_PPC64_DTPREL16_LO:
10234 case R_PPC64_DTPREL16_HI:
10235 case R_PPC64_DTPREL16_HA:
10236 case R_PPC64_DTPREL16_DS:
10237 case R_PPC64_DTPREL16_LO_DS:
10238 case R_PPC64_DTPREL16_HIGHER:
10239 case R_PPC64_DTPREL16_HIGHERA:
10240 case R_PPC64_DTPREL16_HIGHEST:
10241 case R_PPC64_DTPREL16_HIGHESTA:
10242 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10245 case R_PPC64_DTPMOD64:
10250 case R_PPC64_TPREL64:
10251 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10254 case R_PPC64_DTPREL64:
10255 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10258 /* Relocations that may need to be propagated if this is a
10260 case R_PPC64_REL30:
10261 case R_PPC64_REL32:
10262 case R_PPC64_REL64:
10263 case R_PPC64_ADDR14:
10264 case R_PPC64_ADDR14_BRNTAKEN:
10265 case R_PPC64_ADDR14_BRTAKEN:
10266 case R_PPC64_ADDR16:
10267 case R_PPC64_ADDR16_DS:
10268 case R_PPC64_ADDR16_HA:
10269 case R_PPC64_ADDR16_HI:
10270 case R_PPC64_ADDR16_HIGHER:
10271 case R_PPC64_ADDR16_HIGHERA:
10272 case R_PPC64_ADDR16_HIGHEST:
10273 case R_PPC64_ADDR16_HIGHESTA:
10274 case R_PPC64_ADDR16_LO:
10275 case R_PPC64_ADDR16_LO_DS:
10276 case R_PPC64_ADDR24:
10277 case R_PPC64_ADDR32:
10278 case R_PPC64_ADDR64:
10279 case R_PPC64_UADDR16:
10280 case R_PPC64_UADDR32:
10281 case R_PPC64_UADDR64:
10282 /* r_symndx will be zero only for relocs against symbols
10283 from removed linkonce sections, or sections discarded by
10284 a linker script. */
10291 if ((input_section->flags & SEC_ALLOC) == 0)
10294 if (NO_OPD_RELOCS && is_opd)
10299 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10300 || h->elf.root.type != bfd_link_hash_undefweak)
10301 && (MUST_BE_DYN_RELOC (r_type)
10302 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
10303 || (ELIMINATE_COPY_RELOCS
10306 && h->elf.dynindx != -1
10307 && !h->elf.non_got_ref
10308 && h->elf.def_dynamic
10309 && !h->elf.def_regular))
10311 Elf_Internal_Rela outrel;
10312 bfd_boolean skip, relocate;
10317 /* When generating a dynamic object, these relocations
10318 are copied into the output file to be resolved at run
10324 out_off = _bfd_elf_section_offset (output_bfd, info,
10325 input_section, rel->r_offset);
10326 if (out_off == (bfd_vma) -1)
10328 else if (out_off == (bfd_vma) -2)
10329 skip = TRUE, relocate = TRUE;
10330 out_off += (input_section->output_section->vma
10331 + input_section->output_offset);
10332 outrel.r_offset = out_off;
10333 outrel.r_addend = rel->r_addend;
10335 /* Optimize unaligned reloc use. */
10336 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10337 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10338 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10339 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10340 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10341 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10342 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10343 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10344 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10347 memset (&outrel, 0, sizeof outrel);
10348 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
10350 && r_type != R_PPC64_TOC)
10351 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
10354 /* This symbol is local, or marked to become local,
10355 or this is an opd section reloc which must point
10356 at a local function. */
10357 outrel.r_addend += relocation;
10358 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
10360 if (is_opd && h != NULL)
10362 /* Lie about opd entries. This case occurs
10363 when building shared libraries and we
10364 reference a function in another shared
10365 lib. The same thing happens for a weak
10366 definition in an application that's
10367 overridden by a strong definition in a
10368 shared lib. (I believe this is a generic
10369 bug in binutils handling of weak syms.)
10370 In these cases we won't use the opd
10371 entry in this lib. */
10372 unresolved_reloc = FALSE;
10374 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10376 /* We need to relocate .opd contents for ld.so.
10377 Prelink also wants simple and consistent rules
10378 for relocs. This make all RELATIVE relocs have
10379 *r_offset equal to r_addend. */
10386 if (bfd_is_abs_section (sec))
10388 else if (sec == NULL || sec->owner == NULL)
10390 bfd_set_error (bfd_error_bad_value);
10397 osec = sec->output_section;
10398 indx = elf_section_data (osec)->dynindx;
10400 /* We are turning this relocation into one
10401 against a section symbol, so subtract out
10402 the output section's address but not the
10403 offset of the input section in the output
10405 outrel.r_addend -= osec->vma;
10408 outrel.r_info = ELF64_R_INFO (indx, r_type);
10412 sreloc = elf_section_data (input_section)->sreloc;
10413 if (sreloc == NULL)
10416 loc = sreloc->contents;
10417 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
10418 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10420 /* If this reloc is against an external symbol, it will
10421 be computed at runtime, so there's no need to do
10422 anything now. However, for the sake of prelink ensure
10423 that the section contents are a known value. */
10426 unresolved_reloc = FALSE;
10427 /* The value chosen here is quite arbitrary as ld.so
10428 ignores section contents except for the special
10429 case of .opd where the contents might be accessed
10430 before relocation. Choose zero, as that won't
10431 cause reloc overflow. */
10434 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10435 to improve backward compatibility with older
10437 if (r_type == R_PPC64_ADDR64)
10438 addend = outrel.r_addend;
10439 /* Adjust pc_relative relocs to have zero in *r_offset. */
10440 else if (ppc64_elf_howto_table[r_type]->pc_relative)
10441 addend = (input_section->output_section->vma
10442 + input_section->output_offset
10449 case R_PPC64_GLOB_DAT:
10450 case R_PPC64_JMP_SLOT:
10451 case R_PPC64_RELATIVE:
10452 /* We shouldn't ever see these dynamic relocs in relocatable
10454 /* Fall through. */
10456 case R_PPC64_PLTGOT16:
10457 case R_PPC64_PLTGOT16_DS:
10458 case R_PPC64_PLTGOT16_HA:
10459 case R_PPC64_PLTGOT16_HI:
10460 case R_PPC64_PLTGOT16_LO:
10461 case R_PPC64_PLTGOT16_LO_DS:
10462 case R_PPC64_PLTREL32:
10463 case R_PPC64_PLTREL64:
10464 /* These ones haven't been implemented yet. */
10466 (*_bfd_error_handler)
10467 (_("%B: relocation %s is not supported for symbol %s."),
10469 ppc64_elf_howto_table[r_type]->name, sym_name);
10471 bfd_set_error (bfd_error_invalid_operation);
10476 /* Do any further special processing. */
10482 case R_PPC64_ADDR16_HA:
10483 case R_PPC64_ADDR16_HIGHERA:
10484 case R_PPC64_ADDR16_HIGHESTA:
10485 case R_PPC64_GOT16_HA:
10486 case R_PPC64_PLTGOT16_HA:
10487 case R_PPC64_PLT16_HA:
10488 case R_PPC64_TOC16_HA:
10489 case R_PPC64_SECTOFF_HA:
10490 case R_PPC64_TPREL16_HA:
10491 case R_PPC64_DTPREL16_HA:
10492 case R_PPC64_GOT_TLSGD16_HA:
10493 case R_PPC64_GOT_TLSLD16_HA:
10494 case R_PPC64_GOT_TPREL16_HA:
10495 case R_PPC64_GOT_DTPREL16_HA:
10496 case R_PPC64_TPREL16_HIGHER:
10497 case R_PPC64_TPREL16_HIGHERA:
10498 case R_PPC64_TPREL16_HIGHEST:
10499 case R_PPC64_TPREL16_HIGHESTA:
10500 case R_PPC64_DTPREL16_HIGHER:
10501 case R_PPC64_DTPREL16_HIGHERA:
10502 case R_PPC64_DTPREL16_HIGHEST:
10503 case R_PPC64_DTPREL16_HIGHESTA:
10504 /* It's just possible that this symbol is a weak symbol
10505 that's not actually defined anywhere. In that case,
10506 'sec' would be NULL, and we should leave the symbol
10507 alone (it will be set to zero elsewhere in the link). */
10509 /* Add 0x10000 if sign bit in 0:15 is set.
10510 Bits 0:15 are not used. */
10514 case R_PPC64_ADDR16_DS:
10515 case R_PPC64_ADDR16_LO_DS:
10516 case R_PPC64_GOT16_DS:
10517 case R_PPC64_GOT16_LO_DS:
10518 case R_PPC64_PLT16_LO_DS:
10519 case R_PPC64_SECTOFF_DS:
10520 case R_PPC64_SECTOFF_LO_DS:
10521 case R_PPC64_TOC16_DS:
10522 case R_PPC64_TOC16_LO_DS:
10523 case R_PPC64_PLTGOT16_DS:
10524 case R_PPC64_PLTGOT16_LO_DS:
10525 case R_PPC64_GOT_TPREL16_DS:
10526 case R_PPC64_GOT_TPREL16_LO_DS:
10527 case R_PPC64_GOT_DTPREL16_DS:
10528 case R_PPC64_GOT_DTPREL16_LO_DS:
10529 case R_PPC64_TPREL16_DS:
10530 case R_PPC64_TPREL16_LO_DS:
10531 case R_PPC64_DTPREL16_DS:
10532 case R_PPC64_DTPREL16_LO_DS:
10533 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10535 /* If this reloc is against an lq insn, then the value must be
10536 a multiple of 16. This is somewhat of a hack, but the
10537 "correct" way to do this by defining _DQ forms of all the
10538 _DS relocs bloats all reloc switches in this file. It
10539 doesn't seem to make much sense to use any of these relocs
10540 in data, so testing the insn should be safe. */
10541 if ((insn & (0x3f << 26)) == (56u << 26))
10543 if (((relocation + addend) & mask) != 0)
10545 (*_bfd_error_handler)
10546 (_("%B: error: relocation %s not a multiple of %d"),
10548 ppc64_elf_howto_table[r_type]->name,
10550 bfd_set_error (bfd_error_bad_value);
10557 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10558 because such sections are not SEC_ALLOC and thus ld.so will
10559 not process them. */
10560 if (unresolved_reloc
10561 && !((input_section->flags & SEC_DEBUGGING) != 0
10562 && h->elf.def_dynamic))
10564 (*_bfd_error_handler)
10565 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10568 (long) rel->r_offset,
10569 ppc64_elf_howto_table[(int) r_type]->name,
10570 h->elf.root.root.string);
10574 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
10582 if (r != bfd_reloc_ok)
10584 if (sym_name == NULL)
10585 sym_name = "(null)";
10586 if (r == bfd_reloc_overflow)
10591 && h->elf.root.type == bfd_link_hash_undefweak
10592 && ppc64_elf_howto_table[r_type]->pc_relative)
10594 /* Assume this is a call protected by other code that
10595 detects the symbol is undefined. If this is the case,
10596 we can safely ignore the overflow. If not, the
10597 program is hosed anyway, and a little warning isn't
10603 if (!((*info->callbacks->reloc_overflow)
10604 (info, (h ? &h->elf.root : NULL), sym_name,
10605 ppc64_elf_howto_table[r_type]->name,
10606 rel->r_addend, input_bfd, input_section, rel->r_offset)))
10611 (*_bfd_error_handler)
10612 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10615 (long) rel->r_offset,
10616 ppc64_elf_howto_table[r_type]->name,
10624 /* If we're emitting relocations, then shortly after this function
10625 returns, reloc offsets and addends for this section will be
10626 adjusted. Worse, reloc symbol indices will be for the output
10627 file rather than the input. Save a copy of the relocs for
10628 opd_entry_value. */
10629 if (is_opd && info->emitrelocations)
10632 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10633 rel = bfd_alloc (input_bfd, amt);
10634 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10635 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10638 memcpy (rel, relocs, amt);
10643 /* Adjust the value of any local symbols in opd sections. */
10646 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10647 const char *name ATTRIBUTE_UNUSED,
10648 Elf_Internal_Sym *elfsym,
10649 asection *input_sec,
10650 struct elf_link_hash_entry *h)
10652 long *opd_adjust, adjust;
10658 opd_adjust = get_opd_info (input_sec);
10659 if (opd_adjust == NULL)
10662 value = elfsym->st_value - input_sec->output_offset;
10663 if (!info->relocatable)
10664 value -= input_sec->output_section->vma;
10666 adjust = opd_adjust[value / 8];
10668 elfsym->st_value = 0;
10670 elfsym->st_value += adjust;
10674 /* Finish up dynamic symbol handling. We set the contents of various
10675 dynamic sections here. */
10678 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10679 struct bfd_link_info *info,
10680 struct elf_link_hash_entry *h,
10681 Elf_Internal_Sym *sym)
10683 struct ppc_link_hash_table *htab;
10685 struct plt_entry *ent;
10686 Elf_Internal_Rela rela;
10689 htab = ppc_hash_table (info);
10690 dynobj = htab->elf.dynobj;
10692 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10693 if (ent->plt.offset != (bfd_vma) -1)
10695 /* This symbol has an entry in the procedure linkage
10696 table. Set it up. */
10698 if (htab->plt == NULL
10699 || htab->relplt == NULL
10700 || htab->glink == NULL)
10703 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10704 fill in the PLT entry. */
10705 rela.r_offset = (htab->plt->output_section->vma
10706 + htab->plt->output_offset
10707 + ent->plt.offset);
10708 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10709 rela.r_addend = ent->addend;
10711 loc = htab->relplt->contents;
10712 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10713 * sizeof (Elf64_External_Rela));
10714 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10719 Elf_Internal_Rela rela;
10722 /* This symbol needs a copy reloc. Set it up. */
10724 if (h->dynindx == -1
10725 || (h->root.type != bfd_link_hash_defined
10726 && h->root.type != bfd_link_hash_defweak)
10727 || htab->relbss == NULL)
10730 rela.r_offset = (h->root.u.def.value
10731 + h->root.u.def.section->output_section->vma
10732 + h->root.u.def.section->output_offset);
10733 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10735 loc = htab->relbss->contents;
10736 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
10737 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10740 /* Mark some specially defined symbols as absolute. */
10741 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10742 sym->st_shndx = SHN_ABS;
10747 /* Used to decide how to sort relocs in an optimal manner for the
10748 dynamic linker, before writing them out. */
10750 static enum elf_reloc_type_class
10751 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
10753 enum elf_ppc64_reloc_type r_type;
10755 r_type = ELF64_R_TYPE (rela->r_info);
10758 case R_PPC64_RELATIVE:
10759 return reloc_class_relative;
10760 case R_PPC64_JMP_SLOT:
10761 return reloc_class_plt;
10763 return reloc_class_copy;
10765 return reloc_class_normal;
10769 /* Finish up the dynamic sections. */
10772 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10773 struct bfd_link_info *info)
10775 struct ppc_link_hash_table *htab;
10779 htab = ppc_hash_table (info);
10780 dynobj = htab->elf.dynobj;
10781 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10783 if (htab->elf.dynamic_sections_created)
10785 Elf64_External_Dyn *dyncon, *dynconend;
10787 if (sdyn == NULL || htab->got == NULL)
10790 dyncon = (Elf64_External_Dyn *) sdyn->contents;
10791 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
10792 for (; dyncon < dynconend; dyncon++)
10794 Elf_Internal_Dyn dyn;
10797 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10804 case DT_PPC64_GLINK:
10806 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10807 /* We stupidly defined DT_PPC64_GLINK to be the start
10808 of glink rather than the first entry point, which is
10809 what ld.so needs, and now have a bigger stub to
10810 support automatic multiple TOCs. */
10811 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
10815 s = bfd_get_section_by_name (output_bfd, ".opd");
10818 dyn.d_un.d_ptr = s->vma;
10821 case DT_PPC64_OPDSZ:
10822 s = bfd_get_section_by_name (output_bfd, ".opd");
10825 dyn.d_un.d_val = s->size;
10830 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10835 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10839 dyn.d_un.d_val = htab->relplt->size;
10843 /* Don't count procedure linkage table relocs in the
10844 overall reloc count. */
10848 dyn.d_un.d_val -= s->size;
10852 /* We may not be using the standard ELF linker script.
10853 If .rela.plt is the first .rela section, we adjust
10854 DT_RELA to not include it. */
10858 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10860 dyn.d_un.d_ptr += s->size;
10864 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
10868 if (htab->got != NULL && htab->got->size != 0)
10870 /* Fill in the first entry in the global offset table.
10871 We use it to hold the link-time TOCbase. */
10872 bfd_put_64 (output_bfd,
10873 elf_gp (output_bfd) + TOC_BASE_OFF,
10874 htab->got->contents);
10876 /* Set .got entry size. */
10877 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
10880 if (htab->plt != NULL && htab->plt->size != 0)
10882 /* Set .plt entry size. */
10883 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
10887 /* We need to handle writing out multiple GOT sections ourselves,
10888 since we didn't add them to DYNOBJ. We know dynobj is the first
10890 while ((dynobj = dynobj->link_next) != NULL)
10894 if (!is_ppc64_elf_target (dynobj->xvec))
10897 s = ppc64_elf_tdata (dynobj)->got;
10900 && s->output_section != bfd_abs_section_ptr
10901 && !bfd_set_section_contents (output_bfd, s->output_section,
10902 s->contents, s->output_offset,
10905 s = ppc64_elf_tdata (dynobj)->relgot;
10908 && s->output_section != bfd_abs_section_ptr
10909 && !bfd_set_section_contents (output_bfd, s->output_section,
10910 s->contents, s->output_offset,
10918 #include "elf64-target.h"