1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
33 #include "elf/ppc64.h"
34 #include "elf64-ppc.h"
36 static bfd_reloc_status_type ppc64_elf_ha_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38 static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_toc_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc64_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
57 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58 #define TARGET_LITTLE_NAME "elf64-powerpcle"
59 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60 #define TARGET_BIG_NAME "elf64-powerpc"
61 #define ELF_ARCH bfd_arch_powerpc
62 #define ELF_MACHINE_CODE EM_PPC64
63 #define ELF_MAXPAGESIZE 0x10000
64 #define elf_info_to_howto ppc64_elf_info_to_howto
66 #define elf_backend_want_got_sym 0
67 #define elf_backend_want_plt_sym 0
68 #define elf_backend_plt_alignment 3
69 #define elf_backend_plt_not_loaded 1
70 #define elf_backend_got_symbol_offset 0
71 #define elf_backend_got_header_size 8
72 #define elf_backend_can_gc_sections 1
73 #define elf_backend_can_refcount 1
74 #define elf_backend_rela_normal 1
76 #define bfd_elf64_mkobject ppc64_elf_mkobject
77 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
78 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
79 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
80 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
81 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
82 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
84 #define elf_backend_object_p ppc64_elf_object_p
85 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
86 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
87 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
88 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
89 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
90 #define elf_backend_check_directives ppc64_elf_check_directives
91 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
92 #define elf_backend_check_relocs ppc64_elf_check_relocs
93 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
94 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
95 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
96 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
97 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
98 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
99 #define elf_backend_relocate_section ppc64_elf_relocate_section
100 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
101 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
102 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
103 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
104 #define elf_backend_special_sections ppc64_elf_special_sections
106 /* The name of the dynamic interpreter. This is put in the .interp
108 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
110 /* The size in bytes of an entry in the procedure linkage table. */
111 #define PLT_ENTRY_SIZE 24
113 /* The initial size of the plt reserved for the dynamic linker. */
114 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
116 /* TOC base pointers offset from start of TOC. */
117 #define TOC_BASE_OFF 0x8000
119 /* Offset of tp and dtp pointers from start of TLS block. */
120 #define TP_OFFSET 0x7000
121 #define DTP_OFFSET 0x8000
123 /* .plt call stub instructions. The normal stub is like this, but
124 sometimes the .plt entry crosses a 64k boundary and we need to
125 insert an addis to adjust r12. */
126 #define PLT_CALL_STUB_SIZE (7*4)
127 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
128 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
129 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
130 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
131 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
132 /* ld %r11,xxx+16@l(%r12) */
133 #define BCTR 0x4e800420 /* bctr */
136 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
137 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
139 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
141 /* glink call stub instructions. We enter with the index in R0, and the
142 address of glink entry in CTR. From that, we can calculate PLT0. */
143 #define GLINK_CALL_STUB_SIZE (16*4)
144 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
145 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
146 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
147 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
148 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
149 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
150 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
151 /* sub %r12,%r12,%r11 */
152 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
153 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
154 /* ld %r11,xxx@l(%r12) */
155 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
158 /* ld %r11,16(%r12) */
162 #define NOP 0x60000000
164 /* Some other nops. */
165 #define CROR_151515 0x4def7b82
166 #define CROR_313131 0x4ffffb82
168 /* .glink entries for the first 32k functions are two instructions. */
169 #define LI_R0_0 0x38000000 /* li %r0,0 */
170 #define B_DOT 0x48000000 /* b . */
172 /* After that, we need two instructions to load the index, followed by
174 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
175 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
177 /* Instructions used by the save and restore reg functions. */
178 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
179 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
180 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
181 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
182 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
183 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
184 #define LI_R12_0 0x39800000 /* li %r12,0 */
185 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
186 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
187 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
188 #define BLR 0x4e800020 /* blr */
190 /* Since .opd is an array of descriptors and each entry will end up
191 with identical R_PPC64_RELATIVE relocs, there is really no need to
192 propagate .opd relocs; The dynamic linker should be taught to
193 relocate .opd without reloc entries. */
194 #ifndef NO_OPD_RELOCS
195 #define NO_OPD_RELOCS 0
198 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
200 /* Relocation HOWTO's. */
201 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
203 static reloc_howto_type ppc64_elf_howto_raw[] = {
204 /* This reloc does nothing. */
205 HOWTO (R_PPC64_NONE, /* type */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
209 FALSE, /* pc_relative */
211 complain_overflow_dont, /* complain_on_overflow */
212 bfd_elf_generic_reloc, /* special_function */
213 "R_PPC64_NONE", /* name */
214 FALSE, /* partial_inplace */
217 FALSE), /* pcrel_offset */
219 /* A standard 32 bit relocation. */
220 HOWTO (R_PPC64_ADDR32, /* type */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
224 FALSE, /* pc_relative */
226 complain_overflow_bitfield, /* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_PPC64_ADDR32", /* name */
229 FALSE, /* partial_inplace */
231 0xffffffff, /* dst_mask */
232 FALSE), /* pcrel_offset */
234 /* An absolute 26 bit branch; the lower two bits must be zero.
235 FIXME: we don't check that, we just clear them. */
236 HOWTO (R_PPC64_ADDR24, /* type */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
240 FALSE, /* pc_relative */
242 complain_overflow_bitfield, /* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_PPC64_ADDR24", /* name */
245 FALSE, /* partial_inplace */
247 0x03fffffc, /* dst_mask */
248 FALSE), /* pcrel_offset */
250 /* A standard 16 bit relocation. */
251 HOWTO (R_PPC64_ADDR16, /* type */
253 1, /* size (0 = byte, 1 = short, 2 = long) */
255 FALSE, /* pc_relative */
257 complain_overflow_bitfield, /* complain_on_overflow */
258 bfd_elf_generic_reloc, /* special_function */
259 "R_PPC64_ADDR16", /* name */
260 FALSE, /* partial_inplace */
262 0xffff, /* dst_mask */
263 FALSE), /* pcrel_offset */
265 /* A 16 bit relocation without overflow. */
266 HOWTO (R_PPC64_ADDR16_LO, /* type */
268 1, /* size (0 = byte, 1 = short, 2 = long) */
270 FALSE, /* pc_relative */
272 complain_overflow_dont,/* complain_on_overflow */
273 bfd_elf_generic_reloc, /* special_function */
274 "R_PPC64_ADDR16_LO", /* name */
275 FALSE, /* partial_inplace */
277 0xffff, /* dst_mask */
278 FALSE), /* pcrel_offset */
280 /* Bits 16-31 of an address. */
281 HOWTO (R_PPC64_ADDR16_HI, /* type */
283 1, /* size (0 = byte, 1 = short, 2 = long) */
285 FALSE, /* pc_relative */
287 complain_overflow_dont, /* complain_on_overflow */
288 bfd_elf_generic_reloc, /* special_function */
289 "R_PPC64_ADDR16_HI", /* name */
290 FALSE, /* partial_inplace */
292 0xffff, /* dst_mask */
293 FALSE), /* pcrel_offset */
295 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
296 bits, treated as a signed number, is negative. */
297 HOWTO (R_PPC64_ADDR16_HA, /* type */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE, /* pc_relative */
303 complain_overflow_dont, /* complain_on_overflow */
304 ppc64_elf_ha_reloc, /* special_function */
305 "R_PPC64_ADDR16_HA", /* name */
306 FALSE, /* partial_inplace */
308 0xffff, /* dst_mask */
309 FALSE), /* pcrel_offset */
311 /* An absolute 16 bit branch; the lower two bits must be zero.
312 FIXME: we don't check that, we just clear them. */
313 HOWTO (R_PPC64_ADDR14, /* type */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE, /* pc_relative */
319 complain_overflow_bitfield, /* complain_on_overflow */
320 ppc64_elf_branch_reloc, /* special_function */
321 "R_PPC64_ADDR14", /* name */
322 FALSE, /* partial_inplace */
324 0x0000fffc, /* dst_mask */
325 FALSE), /* pcrel_offset */
327 /* An absolute 16 bit branch, for which bit 10 should be set to
328 indicate that the branch is expected to be taken. The lower two
329 bits must be zero. */
330 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE, /* pc_relative */
336 complain_overflow_bitfield, /* complain_on_overflow */
337 ppc64_elf_brtaken_reloc, /* special_function */
338 "R_PPC64_ADDR14_BRTAKEN",/* name */
339 FALSE, /* partial_inplace */
341 0x0000fffc, /* dst_mask */
342 FALSE), /* pcrel_offset */
344 /* An absolute 16 bit branch, for which bit 10 should be set to
345 indicate that the branch is not expected to be taken. The lower
346 two bits must be zero. */
347 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE, /* pc_relative */
353 complain_overflow_bitfield, /* complain_on_overflow */
354 ppc64_elf_brtaken_reloc, /* special_function */
355 "R_PPC64_ADDR14_BRNTAKEN",/* name */
356 FALSE, /* partial_inplace */
358 0x0000fffc, /* dst_mask */
359 FALSE), /* pcrel_offset */
361 /* A relative 26 bit branch; the lower two bits must be zero. */
362 HOWTO (R_PPC64_REL24, /* type */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
366 TRUE, /* pc_relative */
368 complain_overflow_signed, /* complain_on_overflow */
369 ppc64_elf_branch_reloc, /* special_function */
370 "R_PPC64_REL24", /* name */
371 FALSE, /* partial_inplace */
373 0x03fffffc, /* dst_mask */
374 TRUE), /* pcrel_offset */
376 /* A relative 16 bit branch; the lower two bits must be zero. */
377 HOWTO (R_PPC64_REL14, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 ppc64_elf_branch_reloc, /* special_function */
385 "R_PPC64_REL14", /* name */
386 FALSE, /* partial_inplace */
388 0x0000fffc, /* dst_mask */
389 TRUE), /* pcrel_offset */
391 /* A relative 16 bit branch. Bit 10 should be set to indicate that
392 the branch is expected to be taken. The lower two bits must be
394 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 TRUE, /* pc_relative */
400 complain_overflow_signed, /* complain_on_overflow */
401 ppc64_elf_brtaken_reloc, /* special_function */
402 "R_PPC64_REL14_BRTAKEN", /* name */
403 FALSE, /* partial_inplace */
405 0x0000fffc, /* dst_mask */
406 TRUE), /* pcrel_offset */
408 /* A relative 16 bit branch. Bit 10 should be set to indicate that
409 the branch is not expected to be taken. The lower two bits must
411 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
415 TRUE, /* pc_relative */
417 complain_overflow_signed, /* complain_on_overflow */
418 ppc64_elf_brtaken_reloc, /* special_function */
419 "R_PPC64_REL14_BRNTAKEN",/* name */
420 FALSE, /* partial_inplace */
422 0x0000fffc, /* dst_mask */
423 TRUE), /* pcrel_offset */
425 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
427 HOWTO (R_PPC64_GOT16, /* type */
429 1, /* size (0 = byte, 1 = short, 2 = long) */
431 FALSE, /* pc_relative */
433 complain_overflow_signed, /* complain_on_overflow */
434 ppc64_elf_unhandled_reloc, /* special_function */
435 "R_PPC64_GOT16", /* name */
436 FALSE, /* partial_inplace */
438 0xffff, /* dst_mask */
439 FALSE), /* pcrel_offset */
441 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
443 HOWTO (R_PPC64_GOT16_LO, /* type */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE, /* pc_relative */
449 complain_overflow_dont, /* complain_on_overflow */
450 ppc64_elf_unhandled_reloc, /* special_function */
451 "R_PPC64_GOT16_LO", /* name */
452 FALSE, /* partial_inplace */
454 0xffff, /* dst_mask */
455 FALSE), /* pcrel_offset */
457 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
459 HOWTO (R_PPC64_GOT16_HI, /* type */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
463 FALSE, /* pc_relative */
465 complain_overflow_dont,/* complain_on_overflow */
466 ppc64_elf_unhandled_reloc, /* special_function */
467 "R_PPC64_GOT16_HI", /* name */
468 FALSE, /* partial_inplace */
470 0xffff, /* dst_mask */
471 FALSE), /* pcrel_offset */
473 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
475 HOWTO (R_PPC64_GOT16_HA, /* type */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE, /* pc_relative */
481 complain_overflow_dont,/* complain_on_overflow */
482 ppc64_elf_unhandled_reloc, /* special_function */
483 "R_PPC64_GOT16_HA", /* name */
484 FALSE, /* partial_inplace */
486 0xffff, /* dst_mask */
487 FALSE), /* pcrel_offset */
489 /* This is used only by the dynamic linker. The symbol should exist
490 both in the object being run and in some shared library. The
491 dynamic linker copies the data addressed by the symbol from the
492 shared library into the object, because the object being
493 run has to have the data at some particular address. */
494 HOWTO (R_PPC64_COPY, /* type */
496 0, /* this one is variable size */
498 FALSE, /* pc_relative */
500 complain_overflow_dont, /* complain_on_overflow */
501 ppc64_elf_unhandled_reloc, /* special_function */
502 "R_PPC64_COPY", /* name */
503 FALSE, /* partial_inplace */
506 FALSE), /* pcrel_offset */
508 /* Like R_PPC64_ADDR64, but used when setting global offset table
510 HOWTO (R_PPC64_GLOB_DAT, /* type */
512 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
514 FALSE, /* pc_relative */
516 complain_overflow_dont, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc, /* special_function */
518 "R_PPC64_GLOB_DAT", /* name */
519 FALSE, /* partial_inplace */
521 ONES (64), /* dst_mask */
522 FALSE), /* pcrel_offset */
524 /* Created by the link editor. Marks a procedure linkage table
525 entry for a symbol. */
526 HOWTO (R_PPC64_JMP_SLOT, /* type */
528 0, /* size (0 = byte, 1 = short, 2 = long) */
530 FALSE, /* pc_relative */
532 complain_overflow_dont, /* complain_on_overflow */
533 ppc64_elf_unhandled_reloc, /* special_function */
534 "R_PPC64_JMP_SLOT", /* name */
535 FALSE, /* partial_inplace */
538 FALSE), /* pcrel_offset */
540 /* Used only by the dynamic linker. When the object is run, this
541 doubleword64 is set to the load address of the object, plus the
543 HOWTO (R_PPC64_RELATIVE, /* type */
545 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
547 FALSE, /* pc_relative */
549 complain_overflow_dont, /* complain_on_overflow */
550 bfd_elf_generic_reloc, /* special_function */
551 "R_PPC64_RELATIVE", /* name */
552 FALSE, /* partial_inplace */
554 ONES (64), /* dst_mask */
555 FALSE), /* pcrel_offset */
557 /* Like R_PPC64_ADDR32, but may be unaligned. */
558 HOWTO (R_PPC64_UADDR32, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 FALSE, /* pc_relative */
564 complain_overflow_bitfield, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC64_UADDR32", /* name */
567 FALSE, /* partial_inplace */
569 0xffffffff, /* dst_mask */
570 FALSE), /* pcrel_offset */
572 /* Like R_PPC64_ADDR16, but may be unaligned. */
573 HOWTO (R_PPC64_UADDR16, /* type */
575 1, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE, /* pc_relative */
579 complain_overflow_bitfield, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC64_UADDR16", /* name */
582 FALSE, /* partial_inplace */
584 0xffff, /* dst_mask */
585 FALSE), /* pcrel_offset */
587 /* 32-bit PC relative. */
588 HOWTO (R_PPC64_REL32, /* type */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
592 TRUE, /* pc_relative */
594 /* FIXME: Verify. Was complain_overflow_bitfield. */
595 complain_overflow_signed, /* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_PPC64_REL32", /* name */
598 FALSE, /* partial_inplace */
600 0xffffffff, /* dst_mask */
601 TRUE), /* pcrel_offset */
603 /* 32-bit relocation to the symbol's procedure linkage table. */
604 HOWTO (R_PPC64_PLT32, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 FALSE, /* pc_relative */
610 complain_overflow_bitfield, /* complain_on_overflow */
611 ppc64_elf_unhandled_reloc, /* special_function */
612 "R_PPC64_PLT32", /* name */
613 FALSE, /* partial_inplace */
615 0xffffffff, /* dst_mask */
616 FALSE), /* pcrel_offset */
618 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
619 FIXME: R_PPC64_PLTREL32 not supported. */
620 HOWTO (R_PPC64_PLTREL32, /* type */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
624 TRUE, /* pc_relative */
626 complain_overflow_signed, /* complain_on_overflow */
627 bfd_elf_generic_reloc, /* special_function */
628 "R_PPC64_PLTREL32", /* name */
629 FALSE, /* partial_inplace */
631 0xffffffff, /* dst_mask */
632 TRUE), /* pcrel_offset */
634 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
636 HOWTO (R_PPC64_PLT16_LO, /* type */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
640 FALSE, /* pc_relative */
642 complain_overflow_dont, /* complain_on_overflow */
643 ppc64_elf_unhandled_reloc, /* special_function */
644 "R_PPC64_PLT16_LO", /* name */
645 FALSE, /* partial_inplace */
647 0xffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
650 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
652 HOWTO (R_PPC64_PLT16_HI, /* type */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 FALSE, /* pc_relative */
658 complain_overflow_dont, /* complain_on_overflow */
659 ppc64_elf_unhandled_reloc, /* special_function */
660 "R_PPC64_PLT16_HI", /* name */
661 FALSE, /* partial_inplace */
663 0xffff, /* dst_mask */
664 FALSE), /* pcrel_offset */
666 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
668 HOWTO (R_PPC64_PLT16_HA, /* type */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
672 FALSE, /* pc_relative */
674 complain_overflow_dont, /* complain_on_overflow */
675 ppc64_elf_unhandled_reloc, /* special_function */
676 "R_PPC64_PLT16_HA", /* name */
677 FALSE, /* partial_inplace */
679 0xffff, /* dst_mask */
680 FALSE), /* pcrel_offset */
682 /* 16-bit section relative relocation. */
683 HOWTO (R_PPC64_SECTOFF, /* type */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE, /* pc_relative */
689 complain_overflow_bitfield, /* complain_on_overflow */
690 ppc64_elf_sectoff_reloc, /* special_function */
691 "R_PPC64_SECTOFF", /* name */
692 FALSE, /* partial_inplace */
694 0xffff, /* dst_mask */
695 FALSE), /* pcrel_offset */
697 /* Like R_PPC64_SECTOFF, but no overflow warning. */
698 HOWTO (R_PPC64_SECTOFF_LO, /* type */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
702 FALSE, /* pc_relative */
704 complain_overflow_dont, /* complain_on_overflow */
705 ppc64_elf_sectoff_reloc, /* special_function */
706 "R_PPC64_SECTOFF_LO", /* name */
707 FALSE, /* partial_inplace */
709 0xffff, /* dst_mask */
710 FALSE), /* pcrel_offset */
712 /* 16-bit upper half section relative relocation. */
713 HOWTO (R_PPC64_SECTOFF_HI, /* type */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
717 FALSE, /* pc_relative */
719 complain_overflow_dont, /* complain_on_overflow */
720 ppc64_elf_sectoff_reloc, /* special_function */
721 "R_PPC64_SECTOFF_HI", /* name */
722 FALSE, /* partial_inplace */
724 0xffff, /* dst_mask */
725 FALSE), /* pcrel_offset */
727 /* 16-bit upper half adjusted section relative relocation. */
728 HOWTO (R_PPC64_SECTOFF_HA, /* type */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
732 FALSE, /* pc_relative */
734 complain_overflow_dont, /* complain_on_overflow */
735 ppc64_elf_sectoff_ha_reloc, /* special_function */
736 "R_PPC64_SECTOFF_HA", /* name */
737 FALSE, /* partial_inplace */
739 0xffff, /* dst_mask */
740 FALSE), /* pcrel_offset */
742 /* Like R_PPC64_REL24 without touching the two least significant bits. */
743 HOWTO (R_PPC64_REL30, /* type */
745 2, /* size (0 = byte, 1 = short, 2 = long) */
747 TRUE, /* pc_relative */
749 complain_overflow_dont, /* complain_on_overflow */
750 bfd_elf_generic_reloc, /* special_function */
751 "R_PPC64_REL30", /* name */
752 FALSE, /* partial_inplace */
754 0xfffffffc, /* dst_mask */
755 TRUE), /* pcrel_offset */
757 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
759 /* A standard 64-bit relocation. */
760 HOWTO (R_PPC64_ADDR64, /* type */
762 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
764 FALSE, /* pc_relative */
766 complain_overflow_dont, /* complain_on_overflow */
767 bfd_elf_generic_reloc, /* special_function */
768 "R_PPC64_ADDR64", /* name */
769 FALSE, /* partial_inplace */
771 ONES (64), /* dst_mask */
772 FALSE), /* pcrel_offset */
774 /* The bits 32-47 of an address. */
775 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
777 1, /* size (0 = byte, 1 = short, 2 = long) */
779 FALSE, /* pc_relative */
781 complain_overflow_dont, /* complain_on_overflow */
782 bfd_elf_generic_reloc, /* special_function */
783 "R_PPC64_ADDR16_HIGHER", /* name */
784 FALSE, /* partial_inplace */
786 0xffff, /* dst_mask */
787 FALSE), /* pcrel_offset */
789 /* The bits 32-47 of an address, plus 1 if the contents of the low
790 16 bits, treated as a signed number, is negative. */
791 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE, /* pc_relative */
797 complain_overflow_dont, /* complain_on_overflow */
798 ppc64_elf_ha_reloc, /* special_function */
799 "R_PPC64_ADDR16_HIGHERA", /* name */
800 FALSE, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE), /* pcrel_offset */
805 /* The bits 48-63 of an address. */
806 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
810 FALSE, /* pc_relative */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_PPC64_ADDR16_HIGHEST", /* name */
815 FALSE, /* partial_inplace */
817 0xffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
820 /* The bits 48-63 of an address, plus 1 if the contents of the low
821 16 bits, treated as a signed number, is negative. */
822 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE, /* pc_relative */
828 complain_overflow_dont, /* complain_on_overflow */
829 ppc64_elf_ha_reloc, /* special_function */
830 "R_PPC64_ADDR16_HIGHESTA", /* name */
831 FALSE, /* partial_inplace */
833 0xffff, /* dst_mask */
834 FALSE), /* pcrel_offset */
836 /* Like ADDR64, but may be unaligned. */
837 HOWTO (R_PPC64_UADDR64, /* type */
839 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
841 FALSE, /* pc_relative */
843 complain_overflow_dont, /* complain_on_overflow */
844 bfd_elf_generic_reloc, /* special_function */
845 "R_PPC64_UADDR64", /* name */
846 FALSE, /* partial_inplace */
848 ONES (64), /* dst_mask */
849 FALSE), /* pcrel_offset */
851 /* 64-bit relative relocation. */
852 HOWTO (R_PPC64_REL64, /* type */
854 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
856 TRUE, /* pc_relative */
858 complain_overflow_dont, /* complain_on_overflow */
859 bfd_elf_generic_reloc, /* special_function */
860 "R_PPC64_REL64", /* name */
861 FALSE, /* partial_inplace */
863 ONES (64), /* dst_mask */
864 TRUE), /* pcrel_offset */
866 /* 64-bit relocation to the symbol's procedure linkage table. */
867 HOWTO (R_PPC64_PLT64, /* type */
869 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
871 FALSE, /* pc_relative */
873 complain_overflow_dont, /* complain_on_overflow */
874 ppc64_elf_unhandled_reloc, /* special_function */
875 "R_PPC64_PLT64", /* name */
876 FALSE, /* partial_inplace */
878 ONES (64), /* dst_mask */
879 FALSE), /* pcrel_offset */
881 /* 64-bit PC relative relocation to the symbol's procedure linkage
883 /* FIXME: R_PPC64_PLTREL64 not supported. */
884 HOWTO (R_PPC64_PLTREL64, /* type */
886 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
888 TRUE, /* pc_relative */
890 complain_overflow_dont, /* complain_on_overflow */
891 ppc64_elf_unhandled_reloc, /* special_function */
892 "R_PPC64_PLTREL64", /* name */
893 FALSE, /* partial_inplace */
895 ONES (64), /* dst_mask */
896 TRUE), /* pcrel_offset */
898 /* 16 bit TOC-relative relocation. */
900 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
901 HOWTO (R_PPC64_TOC16, /* type */
903 1, /* size (0 = byte, 1 = short, 2 = long) */
905 FALSE, /* pc_relative */
907 complain_overflow_signed, /* complain_on_overflow */
908 ppc64_elf_toc_reloc, /* special_function */
909 "R_PPC64_TOC16", /* name */
910 FALSE, /* partial_inplace */
912 0xffff, /* dst_mask */
913 FALSE), /* pcrel_offset */
915 /* 16 bit TOC-relative relocation without overflow. */
917 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
918 HOWTO (R_PPC64_TOC16_LO, /* type */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE, /* pc_relative */
924 complain_overflow_dont, /* complain_on_overflow */
925 ppc64_elf_toc_reloc, /* special_function */
926 "R_PPC64_TOC16_LO", /* name */
927 FALSE, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE), /* pcrel_offset */
932 /* 16 bit TOC-relative relocation, high 16 bits. */
934 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
935 HOWTO (R_PPC64_TOC16_HI, /* type */
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE, /* pc_relative */
941 complain_overflow_dont, /* complain_on_overflow */
942 ppc64_elf_toc_reloc, /* special_function */
943 "R_PPC64_TOC16_HI", /* name */
944 FALSE, /* partial_inplace */
946 0xffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
949 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
950 contents of the low 16 bits, treated as a signed number, is
953 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
954 HOWTO (R_PPC64_TOC16_HA, /* type */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
958 FALSE, /* pc_relative */
960 complain_overflow_dont, /* complain_on_overflow */
961 ppc64_elf_toc_ha_reloc, /* special_function */
962 "R_PPC64_TOC16_HA", /* name */
963 FALSE, /* partial_inplace */
965 0xffff, /* dst_mask */
966 FALSE), /* pcrel_offset */
968 /* 64-bit relocation; insert value of TOC base (.TOC.). */
970 /* R_PPC64_TOC 51 doubleword64 .TOC. */
971 HOWTO (R_PPC64_TOC, /* type */
973 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
975 FALSE, /* pc_relative */
977 complain_overflow_bitfield, /* complain_on_overflow */
978 ppc64_elf_toc64_reloc, /* special_function */
979 "R_PPC64_TOC", /* name */
980 FALSE, /* partial_inplace */
982 ONES (64), /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* Like R_PPC64_GOT16, but also informs the link editor that the
986 value to relocate may (!) refer to a PLT entry which the link
987 editor (a) may replace with the symbol value. If the link editor
988 is unable to fully resolve the symbol, it may (b) create a PLT
989 entry and store the address to the new PLT entry in the GOT.
990 This permits lazy resolution of function symbols at run time.
991 The link editor may also skip all of this and just (c) emit a
992 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
993 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
994 HOWTO (R_PPC64_PLTGOT16, /* type */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE, /* pc_relative */
1000 complain_overflow_signed, /* complain_on_overflow */
1001 ppc64_elf_unhandled_reloc, /* special_function */
1002 "R_PPC64_PLTGOT16", /* name */
1003 FALSE, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1008 /* Like R_PPC64_PLTGOT16, but without overflow. */
1009 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE, /* pc_relative */
1016 complain_overflow_dont, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc, /* special_function */
1018 "R_PPC64_PLTGOT16_LO", /* name */
1019 FALSE, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1024 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1025 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE, /* pc_relative */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc, /* special_function */
1034 "R_PPC64_PLTGOT16_HI", /* name */
1035 FALSE, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1041 1 if the contents of the low 16 bits, treated as a signed number,
1043 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1044 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1045 16, /* rightshift */
1046 1, /* size (0 = byte, 1 = short, 2 = long) */
1048 FALSE, /* pc_relative */
1050 complain_overflow_dont,/* complain_on_overflow */
1051 ppc64_elf_unhandled_reloc, /* special_function */
1052 "R_PPC64_PLTGOT16_HA", /* name */
1053 FALSE, /* partial_inplace */
1055 0xffff, /* dst_mask */
1056 FALSE), /* pcrel_offset */
1058 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1059 HOWTO (R_PPC64_ADDR16_DS, /* type */
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 FALSE, /* pc_relative */
1065 complain_overflow_bitfield, /* complain_on_overflow */
1066 bfd_elf_generic_reloc, /* special_function */
1067 "R_PPC64_ADDR16_DS", /* name */
1068 FALSE, /* partial_inplace */
1070 0xfffc, /* dst_mask */
1071 FALSE), /* pcrel_offset */
1073 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1074 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE, /* pc_relative */
1080 complain_overflow_dont,/* complain_on_overflow */
1081 bfd_elf_generic_reloc, /* special_function */
1082 "R_PPC64_ADDR16_LO_DS",/* name */
1083 FALSE, /* partial_inplace */
1085 0xfffc, /* dst_mask */
1086 FALSE), /* pcrel_offset */
1088 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1089 HOWTO (R_PPC64_GOT16_DS, /* type */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE, /* pc_relative */
1095 complain_overflow_signed, /* complain_on_overflow */
1096 ppc64_elf_unhandled_reloc, /* special_function */
1097 "R_PPC64_GOT16_DS", /* name */
1098 FALSE, /* partial_inplace */
1100 0xfffc, /* dst_mask */
1101 FALSE), /* pcrel_offset */
1103 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1104 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE, /* pc_relative */
1110 complain_overflow_dont, /* complain_on_overflow */
1111 ppc64_elf_unhandled_reloc, /* special_function */
1112 "R_PPC64_GOT16_LO_DS", /* name */
1113 FALSE, /* partial_inplace */
1115 0xfffc, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1118 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1119 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 FALSE, /* pc_relative */
1125 complain_overflow_dont, /* complain_on_overflow */
1126 ppc64_elf_unhandled_reloc, /* special_function */
1127 "R_PPC64_PLT16_LO_DS", /* name */
1128 FALSE, /* partial_inplace */
1130 0xfffc, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1133 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1134 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 FALSE, /* pc_relative */
1140 complain_overflow_bitfield, /* complain_on_overflow */
1141 ppc64_elf_sectoff_reloc, /* special_function */
1142 "R_PPC64_SECTOFF_DS", /* name */
1143 FALSE, /* partial_inplace */
1145 0xfffc, /* dst_mask */
1146 FALSE), /* pcrel_offset */
1148 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1149 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE, /* pc_relative */
1155 complain_overflow_dont, /* complain_on_overflow */
1156 ppc64_elf_sectoff_reloc, /* special_function */
1157 "R_PPC64_SECTOFF_LO_DS",/* name */
1158 FALSE, /* partial_inplace */
1160 0xfffc, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1163 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1164 HOWTO (R_PPC64_TOC16_DS, /* type */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 FALSE, /* pc_relative */
1170 complain_overflow_signed, /* complain_on_overflow */
1171 ppc64_elf_toc_reloc, /* special_function */
1172 "R_PPC64_TOC16_DS", /* name */
1173 FALSE, /* partial_inplace */
1175 0xfffc, /* dst_mask */
1176 FALSE), /* pcrel_offset */
1178 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1179 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1183 FALSE, /* pc_relative */
1185 complain_overflow_dont, /* complain_on_overflow */
1186 ppc64_elf_toc_reloc, /* special_function */
1187 "R_PPC64_TOC16_LO_DS", /* name */
1188 FALSE, /* partial_inplace */
1190 0xfffc, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1193 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1194 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1195 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1199 FALSE, /* pc_relative */
1201 complain_overflow_signed, /* complain_on_overflow */
1202 ppc64_elf_unhandled_reloc, /* special_function */
1203 "R_PPC64_PLTGOT16_DS", /* name */
1204 FALSE, /* partial_inplace */
1206 0xfffc, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1209 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1211 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1215 FALSE, /* pc_relative */
1217 complain_overflow_dont, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc, /* special_function */
1219 "R_PPC64_PLTGOT16_LO_DS",/* name */
1220 FALSE, /* partial_inplace */
1222 0xfffc, /* dst_mask */
1223 FALSE), /* pcrel_offset */
1225 /* Marker reloc for TLS. */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 FALSE, /* pc_relative */
1232 complain_overflow_dont, /* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_PPC64_TLS", /* name */
1235 FALSE, /* partial_inplace */
1238 FALSE), /* pcrel_offset */
1240 /* Computes the load module index of the load module that contains the
1241 definition of its TLS sym. */
1242 HOWTO (R_PPC64_DTPMOD64,
1244 4, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE, /* pc_relative */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 ppc64_elf_unhandled_reloc, /* special_function */
1250 "R_PPC64_DTPMOD64", /* name */
1251 FALSE, /* partial_inplace */
1253 ONES (64), /* dst_mask */
1254 FALSE), /* pcrel_offset */
1256 /* Computes a dtv-relative displacement, the difference between the value
1257 of sym+add and the base address of the thread-local storage block that
1258 contains the definition of sym, minus 0x8000. */
1259 HOWTO (R_PPC64_DTPREL64,
1261 4, /* size (0 = byte, 1 = short, 2 = long) */
1263 FALSE, /* pc_relative */
1265 complain_overflow_dont, /* complain_on_overflow */
1266 ppc64_elf_unhandled_reloc, /* special_function */
1267 "R_PPC64_DTPREL64", /* name */
1268 FALSE, /* partial_inplace */
1270 ONES (64), /* dst_mask */
1271 FALSE), /* pcrel_offset */
1273 /* A 16 bit dtprel reloc. */
1274 HOWTO (R_PPC64_DTPREL16,
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 FALSE, /* pc_relative */
1280 complain_overflow_signed, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc, /* special_function */
1282 "R_PPC64_DTPREL16", /* name */
1283 FALSE, /* partial_inplace */
1285 0xffff, /* dst_mask */
1286 FALSE), /* pcrel_offset */
1288 /* Like DTPREL16, but no overflow. */
1289 HOWTO (R_PPC64_DTPREL16_LO,
1291 1, /* size (0 = byte, 1 = short, 2 = long) */
1293 FALSE, /* pc_relative */
1295 complain_overflow_dont, /* complain_on_overflow */
1296 ppc64_elf_unhandled_reloc, /* special_function */
1297 "R_PPC64_DTPREL16_LO", /* name */
1298 FALSE, /* partial_inplace */
1300 0xffff, /* dst_mask */
1301 FALSE), /* pcrel_offset */
1303 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1304 HOWTO (R_PPC64_DTPREL16_HI,
1305 16, /* rightshift */
1306 1, /* size (0 = byte, 1 = short, 2 = long) */
1308 FALSE, /* pc_relative */
1310 complain_overflow_dont, /* complain_on_overflow */
1311 ppc64_elf_unhandled_reloc, /* special_function */
1312 "R_PPC64_DTPREL16_HI", /* name */
1313 FALSE, /* partial_inplace */
1315 0xffff, /* dst_mask */
1316 FALSE), /* pcrel_offset */
1318 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1319 HOWTO (R_PPC64_DTPREL16_HA,
1320 16, /* rightshift */
1321 1, /* size (0 = byte, 1 = short, 2 = long) */
1323 FALSE, /* pc_relative */
1325 complain_overflow_dont, /* complain_on_overflow */
1326 ppc64_elf_unhandled_reloc, /* special_function */
1327 "R_PPC64_DTPREL16_HA", /* name */
1328 FALSE, /* partial_inplace */
1330 0xffff, /* dst_mask */
1331 FALSE), /* pcrel_offset */
1333 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1334 HOWTO (R_PPC64_DTPREL16_HIGHER,
1335 32, /* rightshift */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 FALSE, /* pc_relative */
1340 complain_overflow_dont, /* complain_on_overflow */
1341 ppc64_elf_unhandled_reloc, /* special_function */
1342 "R_PPC64_DTPREL16_HIGHER", /* name */
1343 FALSE, /* partial_inplace */
1345 0xffff, /* dst_mask */
1346 FALSE), /* pcrel_offset */
1348 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1349 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1350 32, /* rightshift */
1351 1, /* size (0 = byte, 1 = short, 2 = long) */
1353 FALSE, /* pc_relative */
1355 complain_overflow_dont, /* complain_on_overflow */
1356 ppc64_elf_unhandled_reloc, /* special_function */
1357 "R_PPC64_DTPREL16_HIGHERA", /* name */
1358 FALSE, /* partial_inplace */
1360 0xffff, /* dst_mask */
1361 FALSE), /* pcrel_offset */
1363 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1364 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1365 48, /* rightshift */
1366 1, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE, /* pc_relative */
1370 complain_overflow_dont, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc, /* special_function */
1372 "R_PPC64_DTPREL16_HIGHEST", /* name */
1373 FALSE, /* partial_inplace */
1375 0xffff, /* dst_mask */
1376 FALSE), /* pcrel_offset */
1378 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1379 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1380 48, /* rightshift */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE, /* pc_relative */
1385 complain_overflow_dont, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc, /* special_function */
1387 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1388 FALSE, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1393 /* Like DTPREL16, but for insns with a DS field. */
1394 HOWTO (R_PPC64_DTPREL16_DS,
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 FALSE, /* pc_relative */
1400 complain_overflow_signed, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc, /* special_function */
1402 "R_PPC64_DTPREL16_DS", /* name */
1403 FALSE, /* partial_inplace */
1405 0xfffc, /* dst_mask */
1406 FALSE), /* pcrel_offset */
1408 /* Like DTPREL16_DS, but no overflow. */
1409 HOWTO (R_PPC64_DTPREL16_LO_DS,
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1413 FALSE, /* pc_relative */
1415 complain_overflow_dont, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc, /* special_function */
1417 "R_PPC64_DTPREL16_LO_DS", /* name */
1418 FALSE, /* partial_inplace */
1420 0xfffc, /* dst_mask */
1421 FALSE), /* pcrel_offset */
1423 /* Computes a tp-relative displacement, the difference between the value of
1424 sym+add and the value of the thread pointer (r13). */
1425 HOWTO (R_PPC64_TPREL64,
1427 4, /* size (0 = byte, 1 = short, 2 = long) */
1429 FALSE, /* pc_relative */
1431 complain_overflow_dont, /* complain_on_overflow */
1432 ppc64_elf_unhandled_reloc, /* special_function */
1433 "R_PPC64_TPREL64", /* name */
1434 FALSE, /* partial_inplace */
1436 ONES (64), /* dst_mask */
1437 FALSE), /* pcrel_offset */
1439 /* A 16 bit tprel reloc. */
1440 HOWTO (R_PPC64_TPREL16,
1442 1, /* size (0 = byte, 1 = short, 2 = long) */
1444 FALSE, /* pc_relative */
1446 complain_overflow_signed, /* complain_on_overflow */
1447 ppc64_elf_unhandled_reloc, /* special_function */
1448 "R_PPC64_TPREL16", /* name */
1449 FALSE, /* partial_inplace */
1451 0xffff, /* dst_mask */
1452 FALSE), /* pcrel_offset */
1454 /* Like TPREL16, but no overflow. */
1455 HOWTO (R_PPC64_TPREL16_LO,
1457 1, /* size (0 = byte, 1 = short, 2 = long) */
1459 FALSE, /* pc_relative */
1461 complain_overflow_dont, /* complain_on_overflow */
1462 ppc64_elf_unhandled_reloc, /* special_function */
1463 "R_PPC64_TPREL16_LO", /* name */
1464 FALSE, /* partial_inplace */
1466 0xffff, /* dst_mask */
1467 FALSE), /* pcrel_offset */
1469 /* Like TPREL16_LO, but next higher group of 16 bits. */
1470 HOWTO (R_PPC64_TPREL16_HI,
1471 16, /* rightshift */
1472 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 FALSE, /* pc_relative */
1476 complain_overflow_dont, /* complain_on_overflow */
1477 ppc64_elf_unhandled_reloc, /* special_function */
1478 "R_PPC64_TPREL16_HI", /* name */
1479 FALSE, /* partial_inplace */
1481 0xffff, /* dst_mask */
1482 FALSE), /* pcrel_offset */
1484 /* Like TPREL16_HI, but adjust for low 16 bits. */
1485 HOWTO (R_PPC64_TPREL16_HA,
1486 16, /* rightshift */
1487 1, /* size (0 = byte, 1 = short, 2 = long) */
1489 FALSE, /* pc_relative */
1491 complain_overflow_dont, /* complain_on_overflow */
1492 ppc64_elf_unhandled_reloc, /* special_function */
1493 "R_PPC64_TPREL16_HA", /* name */
1494 FALSE, /* partial_inplace */
1496 0xffff, /* dst_mask */
1497 FALSE), /* pcrel_offset */
1499 /* Like TPREL16_HI, but next higher group of 16 bits. */
1500 HOWTO (R_PPC64_TPREL16_HIGHER,
1501 32, /* rightshift */
1502 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE, /* pc_relative */
1506 complain_overflow_dont, /* complain_on_overflow */
1507 ppc64_elf_unhandled_reloc, /* special_function */
1508 "R_PPC64_TPREL16_HIGHER", /* name */
1509 FALSE, /* partial_inplace */
1511 0xffff, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1514 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1515 HOWTO (R_PPC64_TPREL16_HIGHERA,
1516 32, /* rightshift */
1517 1, /* size (0 = byte, 1 = short, 2 = long) */
1519 FALSE, /* pc_relative */
1521 complain_overflow_dont, /* complain_on_overflow */
1522 ppc64_elf_unhandled_reloc, /* special_function */
1523 "R_PPC64_TPREL16_HIGHERA", /* name */
1524 FALSE, /* partial_inplace */
1526 0xffff, /* dst_mask */
1527 FALSE), /* pcrel_offset */
1529 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1530 HOWTO (R_PPC64_TPREL16_HIGHEST,
1531 48, /* rightshift */
1532 1, /* size (0 = byte, 1 = short, 2 = long) */
1534 FALSE, /* pc_relative */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc, /* special_function */
1538 "R_PPC64_TPREL16_HIGHEST", /* name */
1539 FALSE, /* partial_inplace */
1541 0xffff, /* dst_mask */
1542 FALSE), /* pcrel_offset */
1544 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1545 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1546 48, /* rightshift */
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE, /* pc_relative */
1551 complain_overflow_dont, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc, /* special_function */
1553 "R_PPC64_TPREL16_HIGHESTA", /* name */
1554 FALSE, /* partial_inplace */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1559 /* Like TPREL16, but for insns with a DS field. */
1560 HOWTO (R_PPC64_TPREL16_DS,
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE, /* pc_relative */
1566 complain_overflow_signed, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc, /* special_function */
1568 "R_PPC64_TPREL16_DS", /* name */
1569 FALSE, /* partial_inplace */
1571 0xfffc, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1574 /* Like TPREL16_DS, but no overflow. */
1575 HOWTO (R_PPC64_TPREL16_LO_DS,
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1579 FALSE, /* pc_relative */
1581 complain_overflow_dont, /* complain_on_overflow */
1582 ppc64_elf_unhandled_reloc, /* special_function */
1583 "R_PPC64_TPREL16_LO_DS", /* name */
1584 FALSE, /* partial_inplace */
1586 0xfffc, /* dst_mask */
1587 FALSE), /* pcrel_offset */
1589 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1590 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1591 to the first entry relative to the TOC base (r2). */
1592 HOWTO (R_PPC64_GOT_TLSGD16,
1594 1, /* size (0 = byte, 1 = short, 2 = long) */
1596 FALSE, /* pc_relative */
1598 complain_overflow_signed, /* complain_on_overflow */
1599 ppc64_elf_unhandled_reloc, /* special_function */
1600 "R_PPC64_GOT_TLSGD16", /* name */
1601 FALSE, /* partial_inplace */
1603 0xffff, /* dst_mask */
1604 FALSE), /* pcrel_offset */
1606 /* Like GOT_TLSGD16, but no overflow. */
1607 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1609 1, /* size (0 = byte, 1 = short, 2 = long) */
1611 FALSE, /* pc_relative */
1613 complain_overflow_dont, /* complain_on_overflow */
1614 ppc64_elf_unhandled_reloc, /* special_function */
1615 "R_PPC64_GOT_TLSGD16_LO", /* name */
1616 FALSE, /* partial_inplace */
1618 0xffff, /* dst_mask */
1619 FALSE), /* pcrel_offset */
1621 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1622 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1623 16, /* rightshift */
1624 1, /* size (0 = byte, 1 = short, 2 = long) */
1626 FALSE, /* pc_relative */
1628 complain_overflow_dont, /* complain_on_overflow */
1629 ppc64_elf_unhandled_reloc, /* special_function */
1630 "R_PPC64_GOT_TLSGD16_HI", /* name */
1631 FALSE, /* partial_inplace */
1633 0xffff, /* dst_mask */
1634 FALSE), /* pcrel_offset */
1636 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1637 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1638 16, /* rightshift */
1639 1, /* size (0 = byte, 1 = short, 2 = long) */
1641 FALSE, /* pc_relative */
1643 complain_overflow_dont, /* complain_on_overflow */
1644 ppc64_elf_unhandled_reloc, /* special_function */
1645 "R_PPC64_GOT_TLSGD16_HA", /* name */
1646 FALSE, /* partial_inplace */
1648 0xffff, /* dst_mask */
1649 FALSE), /* pcrel_offset */
1651 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1652 with values (sym+add)@dtpmod and zero, and computes the offset to the
1653 first entry relative to the TOC base (r2). */
1654 HOWTO (R_PPC64_GOT_TLSLD16,
1656 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 FALSE, /* pc_relative */
1660 complain_overflow_signed, /* complain_on_overflow */
1661 ppc64_elf_unhandled_reloc, /* special_function */
1662 "R_PPC64_GOT_TLSLD16", /* name */
1663 FALSE, /* partial_inplace */
1665 0xffff, /* dst_mask */
1666 FALSE), /* pcrel_offset */
1668 /* Like GOT_TLSLD16, but no overflow. */
1669 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1671 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 FALSE, /* pc_relative */
1675 complain_overflow_dont, /* complain_on_overflow */
1676 ppc64_elf_unhandled_reloc, /* special_function */
1677 "R_PPC64_GOT_TLSLD16_LO", /* name */
1678 FALSE, /* partial_inplace */
1680 0xffff, /* dst_mask */
1681 FALSE), /* pcrel_offset */
1683 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1684 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1685 16, /* rightshift */
1686 1, /* size (0 = byte, 1 = short, 2 = long) */
1688 FALSE, /* pc_relative */
1690 complain_overflow_dont, /* complain_on_overflow */
1691 ppc64_elf_unhandled_reloc, /* special_function */
1692 "R_PPC64_GOT_TLSLD16_HI", /* name */
1693 FALSE, /* partial_inplace */
1695 0xffff, /* dst_mask */
1696 FALSE), /* pcrel_offset */
1698 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1699 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1700 16, /* rightshift */
1701 1, /* size (0 = byte, 1 = short, 2 = long) */
1703 FALSE, /* pc_relative */
1705 complain_overflow_dont, /* complain_on_overflow */
1706 ppc64_elf_unhandled_reloc, /* special_function */
1707 "R_PPC64_GOT_TLSLD16_HA", /* name */
1708 FALSE, /* partial_inplace */
1710 0xffff, /* dst_mask */
1711 FALSE), /* pcrel_offset */
1713 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1714 the offset to the entry relative to the TOC base (r2). */
1715 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1717 1, /* size (0 = byte, 1 = short, 2 = long) */
1719 FALSE, /* pc_relative */
1721 complain_overflow_signed, /* complain_on_overflow */
1722 ppc64_elf_unhandled_reloc, /* special_function */
1723 "R_PPC64_GOT_DTPREL16_DS", /* name */
1724 FALSE, /* partial_inplace */
1726 0xfffc, /* dst_mask */
1727 FALSE), /* pcrel_offset */
1729 /* Like GOT_DTPREL16_DS, but no overflow. */
1730 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1732 1, /* size (0 = byte, 1 = short, 2 = long) */
1734 FALSE, /* pc_relative */
1736 complain_overflow_dont, /* complain_on_overflow */
1737 ppc64_elf_unhandled_reloc, /* special_function */
1738 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1739 FALSE, /* partial_inplace */
1741 0xfffc, /* dst_mask */
1742 FALSE), /* pcrel_offset */
1744 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1745 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1746 16, /* rightshift */
1747 1, /* size (0 = byte, 1 = short, 2 = long) */
1749 FALSE, /* pc_relative */
1751 complain_overflow_dont, /* complain_on_overflow */
1752 ppc64_elf_unhandled_reloc, /* special_function */
1753 "R_PPC64_GOT_DTPREL16_HI", /* name */
1754 FALSE, /* partial_inplace */
1756 0xffff, /* dst_mask */
1757 FALSE), /* pcrel_offset */
1759 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1760 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1761 16, /* rightshift */
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1764 FALSE, /* pc_relative */
1766 complain_overflow_dont, /* complain_on_overflow */
1767 ppc64_elf_unhandled_reloc, /* special_function */
1768 "R_PPC64_GOT_DTPREL16_HA", /* name */
1769 FALSE, /* partial_inplace */
1771 0xffff, /* dst_mask */
1772 FALSE), /* pcrel_offset */
1774 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1775 offset to the entry relative to the TOC base (r2). */
1776 HOWTO (R_PPC64_GOT_TPREL16_DS,
1778 1, /* size (0 = byte, 1 = short, 2 = long) */
1780 FALSE, /* pc_relative */
1782 complain_overflow_signed, /* complain_on_overflow */
1783 ppc64_elf_unhandled_reloc, /* special_function */
1784 "R_PPC64_GOT_TPREL16_DS", /* name */
1785 FALSE, /* partial_inplace */
1787 0xfffc, /* dst_mask */
1788 FALSE), /* pcrel_offset */
1790 /* Like GOT_TPREL16_DS, but no overflow. */
1791 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1793 1, /* size (0 = byte, 1 = short, 2 = long) */
1795 FALSE, /* pc_relative */
1797 complain_overflow_dont, /* complain_on_overflow */
1798 ppc64_elf_unhandled_reloc, /* special_function */
1799 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1800 FALSE, /* partial_inplace */
1802 0xfffc, /* dst_mask */
1803 FALSE), /* pcrel_offset */
1805 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1806 HOWTO (R_PPC64_GOT_TPREL16_HI,
1807 16, /* rightshift */
1808 1, /* size (0 = byte, 1 = short, 2 = long) */
1810 FALSE, /* pc_relative */
1812 complain_overflow_dont, /* complain_on_overflow */
1813 ppc64_elf_unhandled_reloc, /* special_function */
1814 "R_PPC64_GOT_TPREL16_HI", /* name */
1815 FALSE, /* partial_inplace */
1817 0xffff, /* dst_mask */
1818 FALSE), /* pcrel_offset */
1820 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1821 HOWTO (R_PPC64_GOT_TPREL16_HA,
1822 16, /* rightshift */
1823 1, /* size (0 = byte, 1 = short, 2 = long) */
1825 FALSE, /* pc_relative */
1827 complain_overflow_dont, /* complain_on_overflow */
1828 ppc64_elf_unhandled_reloc, /* special_function */
1829 "R_PPC64_GOT_TPREL16_HA", /* name */
1830 FALSE, /* partial_inplace */
1832 0xffff, /* dst_mask */
1833 FALSE), /* pcrel_offset */
1835 /* GNU extension to record C++ vtable hierarchy. */
1836 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1838 0, /* size (0 = byte, 1 = short, 2 = long) */
1840 FALSE, /* pc_relative */
1842 complain_overflow_dont, /* complain_on_overflow */
1843 NULL, /* special_function */
1844 "R_PPC64_GNU_VTINHERIT", /* name */
1845 FALSE, /* partial_inplace */
1848 FALSE), /* pcrel_offset */
1850 /* GNU extension to record C++ vtable member usage. */
1851 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1853 0, /* size (0 = byte, 1 = short, 2 = long) */
1855 FALSE, /* pc_relative */
1857 complain_overflow_dont, /* complain_on_overflow */
1858 NULL, /* special_function */
1859 "R_PPC64_GNU_VTENTRY", /* name */
1860 FALSE, /* partial_inplace */
1863 FALSE), /* pcrel_offset */
1867 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1871 ppc_howto_init (void)
1873 unsigned int i, type;
1876 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1879 type = ppc64_elf_howto_raw[i].type;
1880 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1881 / sizeof (ppc64_elf_howto_table[0])));
1882 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1886 static reloc_howto_type *
1887 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1888 bfd_reloc_code_real_type code)
1890 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1892 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1893 /* Initialize howto table if needed. */
1901 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1903 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1905 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1907 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1909 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1911 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1913 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1915 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1917 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1919 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1921 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1923 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1925 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1927 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1929 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1931 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1933 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1935 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1937 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1939 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1941 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1943 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1945 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1947 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1949 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1951 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1953 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1955 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1957 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1959 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1961 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1963 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1965 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1967 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1969 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1971 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1973 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1975 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1977 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1979 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1981 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1983 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1985 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1987 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1989 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1991 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1993 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1995 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1997 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1999 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2001 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2003 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2005 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2007 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2009 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2011 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2013 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2015 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2017 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2019 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2021 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2023 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2025 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2027 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2029 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2031 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2033 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2035 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2037 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2039 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2041 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2043 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2045 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2047 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2049 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2051 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2053 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2055 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2057 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2059 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2061 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2063 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2065 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2067 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2069 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2071 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2073 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2075 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2077 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2079 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2081 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2083 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2085 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2087 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2089 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2091 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2093 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2095 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2097 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2099 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2101 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2105 return ppc64_elf_howto_table[r];
2108 /* Set the howto pointer for a PowerPC ELF reloc. */
2111 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2112 Elf_Internal_Rela *dst)
2116 /* Initialize howto table if needed. */
2117 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2120 type = ELF64_R_TYPE (dst->r_info);
2121 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2122 / sizeof (ppc64_elf_howto_table[0])));
2123 cache_ptr->howto = ppc64_elf_howto_table[type];
2126 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2128 static bfd_reloc_status_type
2129 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2130 void *data, asection *input_section,
2131 bfd *output_bfd, char **error_message)
2133 /* If this is a relocatable link (output_bfd test tells us), just
2134 call the generic function. Any adjustment will be done at final
2136 if (output_bfd != NULL)
2137 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2138 input_section, output_bfd, error_message);
2140 /* Adjust the addend for sign extension of the low 16 bits.
2141 We won't actually be using the low 16 bits, so trashing them
2143 reloc_entry->addend += 0x8000;
2144 return bfd_reloc_continue;
2147 static bfd_reloc_status_type
2148 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2149 void *data, asection *input_section,
2150 bfd *output_bfd, char **error_message)
2152 if (output_bfd != NULL)
2153 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2154 input_section, output_bfd, error_message);
2156 if (strcmp (symbol->section->name, ".opd") == 0
2157 && (symbol->section->owner->flags & DYNAMIC) == 0)
2159 bfd_vma dest = opd_entry_value (symbol->section,
2160 symbol->value + reloc_entry->addend,
2162 if (dest != (bfd_vma) -1)
2163 reloc_entry->addend = dest - (symbol->value
2164 + symbol->section->output_section->vma
2165 + symbol->section->output_offset);
2167 return bfd_reloc_continue;
2170 static bfd_reloc_status_type
2171 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2172 void *data, asection *input_section,
2173 bfd *output_bfd, char **error_message)
2176 enum elf_ppc64_reloc_type r_type;
2177 bfd_size_type octets;
2178 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2179 bfd_boolean is_power4 = FALSE;
2181 /* If this is a relocatable link (output_bfd test tells us), just
2182 call the generic function. Any adjustment will be done at final
2184 if (output_bfd != NULL)
2185 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2186 input_section, output_bfd, error_message);
2188 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2189 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2190 insn &= ~(0x01 << 21);
2191 r_type = reloc_entry->howto->type;
2192 if (r_type == R_PPC64_ADDR14_BRTAKEN
2193 || r_type == R_PPC64_REL14_BRTAKEN)
2194 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2198 /* Set 'a' bit. This is 0b00010 in BO field for branch
2199 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2200 for branch on CTR insns (BO == 1a00t or 1a01t). */
2201 if ((insn & (0x14 << 21)) == (0x04 << 21))
2203 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2213 if (!bfd_is_com_section (symbol->section))
2214 target = symbol->value;
2215 target += symbol->section->output_section->vma;
2216 target += symbol->section->output_offset;
2217 target += reloc_entry->addend;
2219 from = (reloc_entry->address
2220 + input_section->output_offset
2221 + input_section->output_section->vma);
2223 /* Invert 'y' bit if not the default. */
2224 if ((bfd_signed_vma) (target - from) < 0)
2227 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2229 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2230 input_section, output_bfd, error_message);
2233 static bfd_reloc_status_type
2234 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2235 void *data, asection *input_section,
2236 bfd *output_bfd, char **error_message)
2238 /* If this is a relocatable link (output_bfd test tells us), just
2239 call the generic function. Any adjustment will be done at final
2241 if (output_bfd != NULL)
2242 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2243 input_section, output_bfd, error_message);
2245 /* Subtract the symbol section base address. */
2246 reloc_entry->addend -= symbol->section->output_section->vma;
2247 return bfd_reloc_continue;
2250 static bfd_reloc_status_type
2251 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2252 void *data, asection *input_section,
2253 bfd *output_bfd, char **error_message)
2255 /* If this is a relocatable link (output_bfd test tells us), just
2256 call the generic function. Any adjustment will be done at final
2258 if (output_bfd != NULL)
2259 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2260 input_section, output_bfd, error_message);
2262 /* Subtract the symbol section base address. */
2263 reloc_entry->addend -= symbol->section->output_section->vma;
2265 /* Adjust the addend for sign extension of the low 16 bits. */
2266 reloc_entry->addend += 0x8000;
2267 return bfd_reloc_continue;
2270 static bfd_reloc_status_type
2271 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2272 void *data, asection *input_section,
2273 bfd *output_bfd, char **error_message)
2277 /* If this is a relocatable link (output_bfd test tells us), just
2278 call the generic function. Any adjustment will be done at final
2280 if (output_bfd != NULL)
2281 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2282 input_section, output_bfd, error_message);
2284 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2286 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2288 /* Subtract the TOC base address. */
2289 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2290 return bfd_reloc_continue;
2293 static bfd_reloc_status_type
2294 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2295 void *data, asection *input_section,
2296 bfd *output_bfd, char **error_message)
2300 /* If this is a relocatable link (output_bfd test tells us), just
2301 call the generic function. Any adjustment will be done at final
2303 if (output_bfd != NULL)
2304 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2305 input_section, output_bfd, error_message);
2307 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2309 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2311 /* Subtract the TOC base address. */
2312 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2314 /* Adjust the addend for sign extension of the low 16 bits. */
2315 reloc_entry->addend += 0x8000;
2316 return bfd_reloc_continue;
2319 static bfd_reloc_status_type
2320 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2321 void *data, asection *input_section,
2322 bfd *output_bfd, char **error_message)
2325 bfd_size_type octets;
2327 /* If this is a relocatable link (output_bfd test tells us), just
2328 call the generic function. Any adjustment will be done at final
2330 if (output_bfd != NULL)
2331 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2332 input_section, output_bfd, error_message);
2334 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2336 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2338 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2339 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2340 return bfd_reloc_ok;
2343 static bfd_reloc_status_type
2344 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2345 void *data, asection *input_section,
2346 bfd *output_bfd, char **error_message)
2348 /* If this is a relocatable link (output_bfd test tells us), just
2349 call the generic function. Any adjustment will be done at final
2351 if (output_bfd != NULL)
2352 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2353 input_section, output_bfd, error_message);
2355 if (error_message != NULL)
2357 static char buf[60];
2358 sprintf (buf, "generic linker can't handle %s",
2359 reloc_entry->howto->name);
2360 *error_message = buf;
2362 return bfd_reloc_dangerous;
2365 struct ppc64_elf_obj_tdata
2367 struct elf_obj_tdata elf;
2369 /* Shortcuts to dynamic linker sections. */
2373 /* Used during garbage collection. We attach global symbols defined
2374 on removed .opd entries to this section so that the sym is removed. */
2375 asection *deleted_section;
2377 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2378 sections means we potentially need one of these for each input bfd. */
2380 bfd_signed_vma refcount;
2385 #define ppc64_elf_tdata(bfd) \
2386 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2388 #define ppc64_tlsld_got(bfd) \
2389 (&ppc64_elf_tdata (bfd)->tlsld_got)
2391 /* Override the generic function because we store some extras. */
2394 ppc64_elf_mkobject (bfd *abfd)
2396 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2397 abfd->tdata.any = bfd_zalloc (abfd, amt);
2398 if (abfd->tdata.any == NULL)
2403 /* Fix bad default arch selected for a 64 bit input bfd when the
2404 default is 32 bit. */
2407 ppc64_elf_object_p (bfd *abfd)
2409 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2411 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2413 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2415 /* Relies on arch after 32 bit default being 64 bit default. */
2416 abfd->arch_info = abfd->arch_info->next;
2417 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2423 /* Support for core dump NOTE sections. */
2426 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2428 size_t offset, size;
2430 if (note->descsz != 504)
2434 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2437 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2443 /* Make a ".reg/999" section. */
2444 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2445 size, note->descpos + offset);
2449 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2451 if (note->descsz != 136)
2454 elf_tdata (abfd)->core_program
2455 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2456 elf_tdata (abfd)->core_command
2457 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2462 /* Merge backend specific data from an object file to the output
2463 object file when linking. */
2466 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2468 /* Check if we have the same endianess. */
2469 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2470 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2471 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2475 if (bfd_big_endian (ibfd))
2476 msg = _("%B: compiled for a big endian system "
2477 "and target is little endian");
2479 msg = _("%B: compiled for a little endian system "
2480 "and target is big endian");
2482 (*_bfd_error_handler) (msg, ibfd);
2484 bfd_set_error (bfd_error_wrong_format);
2491 /* Add extra PPC sections. */
2493 static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2495 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2496 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2497 { ".plt", 4, 0, SHT_NOBITS, 0 },
2498 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2499 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2500 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2501 { NULL, 0, 0, 0, 0 }
2504 struct _ppc64_elf_section_data
2506 struct bfd_elf_section_data elf;
2508 /* An array with one entry for each opd function descriptor. */
2511 /* Points to the function code section for local opd entries. */
2512 asection **func_sec;
2513 /* After editing .opd, adjust references to opd local syms. */
2517 /* An array for toc sections, indexed by offset/8.
2518 Specifies the relocation symbol index used at a given toc offset. */
2522 #define ppc64_elf_section_data(sec) \
2523 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2526 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2528 struct _ppc64_elf_section_data *sdata;
2529 bfd_size_type amt = sizeof (*sdata);
2531 sdata = bfd_zalloc (abfd, amt);
2534 sec->used_by_bfd = sdata;
2536 return _bfd_elf_new_section_hook (abfd, sec);
2540 get_opd_info (asection * sec)
2543 && ppc64_elf_section_data (sec) != NULL
2544 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2545 return ppc64_elf_section_data (sec)->opd.adjust;
2549 /* Parameters for the qsort hook. */
2550 static asection *synthetic_opd;
2551 static bfd_boolean synthetic_relocatable;
2553 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2556 compare_symbols (const void *ap, const void *bp)
2558 const asymbol *a = * (const asymbol **) ap;
2559 const asymbol *b = * (const asymbol **) bp;
2561 /* Section symbols first. */
2562 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2564 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2567 /* then .opd symbols. */
2568 if (a->section == synthetic_opd && b->section != synthetic_opd)
2570 if (a->section != synthetic_opd && b->section == synthetic_opd)
2573 /* then other code symbols. */
2574 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2575 == (SEC_CODE | SEC_ALLOC)
2576 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2577 != (SEC_CODE | SEC_ALLOC))
2580 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2581 != (SEC_CODE | SEC_ALLOC)
2582 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2583 == (SEC_CODE | SEC_ALLOC))
2586 if (synthetic_relocatable)
2588 if (a->section->id < b->section->id)
2591 if (a->section->id > b->section->id)
2595 if (a->value + a->section->vma < b->value + b->section->vma)
2598 if (a->value + a->section->vma > b->value + b->section->vma)
2604 /* Search SYMS for a symbol of the given VALUE. */
2607 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2615 mid = (lo + hi) >> 1;
2616 if (syms[mid]->value + syms[mid]->section->vma < value)
2618 else if (syms[mid]->value + syms[mid]->section->vma > value)
2628 mid = (lo + hi) >> 1;
2629 if (syms[mid]->section->id < id)
2631 else if (syms[mid]->section->id > id)
2633 else if (syms[mid]->value < value)
2635 else if (syms[mid]->value > value)
2644 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2648 ppc64_elf_get_synthetic_symtab (bfd *abfd, asymbol **relsyms, asymbol **ret)
2654 asymbol **syms = NULL;
2655 long symcount = 0, codesecsym, codesecsymend, secsymend, opdsymend;
2657 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2661 opd = bfd_get_section_by_name (abfd, ".opd");
2665 if ((bfd_get_file_flags (abfd) & HAS_SYMS))
2668 storage = bfd_get_symtab_upper_bound (abfd);
2674 syms = bfd_malloc (storage);
2679 symcount = bfd_canonicalize_symtab (abfd, syms);
2697 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
2703 syms = bfd_malloc (storage);
2708 symcount = bfd_canonicalize_dynamic_symtab (abfd, syms);
2716 synthetic_opd = opd;
2717 synthetic_relocatable = relocatable;
2718 qsort (syms, symcount, sizeof (asymbol *), compare_symbols);
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))
2748 if (opdsymend == secsymend)
2757 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2763 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2765 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2768 || ! (*slurp_relocs) (abfd, relopd, relsyms, FALSE))
2775 for (i = secsymend, r = relopd->relocation; i < opdsymend; ++i)
2779 while (r < relopd->relocation + relcount
2780 && r->address < syms[i]->value + opd->vma)
2783 if (r == relopd->relocation + relcount)
2786 if (r->address != syms[i]->value + opd->vma)
2789 if (r->howto->type != R_PPC64_ADDR64)
2792 sym = *r->sym_ptr_ptr;
2793 if (!sym_exists_at (syms, opdsymend, symcount,
2794 sym->section->id, sym->value + r->addend))
2797 size += sizeof (asymbol);
2798 size += strlen (syms[i]->name) + 2;
2802 s = *ret = bfd_malloc (size);
2809 names = (char *) (s + count);
2811 for (i = secsymend, r = relopd->relocation; i < opdsymend; ++i)
2815 while (r < relopd->relocation + relcount
2816 && r->address < syms[i]->value + opd->vma)
2819 if (r == relopd->relocation + relcount)
2822 if (r->address != syms[i]->value + opd->vma)
2825 if (r->howto->type != R_PPC64_ADDR64)
2828 sym = *r->sym_ptr_ptr;
2829 if (!sym_exists_at (syms, opdsymend, symcount,
2830 sym->section->id, sym->value + r->addend))
2835 s->section = sym->section;
2836 s->value = sym->value + r->addend;
2839 len = strlen (syms[i]->name);
2840 memcpy (names, syms[i]->name, len + 1);
2851 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2860 for (i = secsymend; i < opdsymend; ++i)
2864 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2865 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2868 size += sizeof (asymbol);
2869 size += strlen (syms[i]->name) + 2;
2873 s = *ret = bfd_malloc (size);
2881 names = (char *) (s + count);
2883 for (i = secsymend; i < opdsymend; ++i)
2887 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2888 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2899 mid = (lo + hi) >> 1;
2900 if (syms[mid]->section->vma < ent)
2902 else if (syms[mid]->section->vma > ent)
2909 sec = syms[mid]->section;
2910 else if (lo > codesecsym)
2911 sec = syms[lo - 1]->section;
2913 sec = abfd->sections;
2915 for (; sec != NULL; sec = sec->next)
2919 if ((sec->flags & SEC_ALLOC) == 0
2920 || (sec->flags & SEC_LOAD) == 0)
2922 if ((sec->flags & SEC_CODE) != 0)
2925 s->value = ent - s->section->vma;
2928 len = strlen (syms[i]->name);
2929 memcpy (names, syms[i]->name, len + 1);
2941 /* The following functions are specific to the ELF linker, while
2942 functions above are used generally. Those named ppc64_elf_* are
2943 called by the main ELF linker code. They appear in this file more
2944 or less in the order in which they are called. eg.
2945 ppc64_elf_check_relocs is called early in the link process,
2946 ppc64_elf_finish_dynamic_sections is one of the last functions
2949 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2950 functions have both a function code symbol and a function descriptor
2951 symbol. A call to foo in a relocatable object file looks like:
2958 The function definition in another object file might be:
2962 . .quad .TOC.@tocbase
2968 When the linker resolves the call during a static link, the branch
2969 unsurprisingly just goes to .foo and the .opd information is unused.
2970 If the function definition is in a shared library, things are a little
2971 different: The call goes via a plt call stub, the opd information gets
2972 copied to the plt, and the linker patches the nop.
2980 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2981 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2982 . std 2,40(1) # this is the general idea
2990 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2992 The "reloc ()" notation is supposed to indicate that the linker emits
2993 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2996 What are the difficulties here? Well, firstly, the relocations
2997 examined by the linker in check_relocs are against the function code
2998 sym .foo, while the dynamic relocation in the plt is emitted against
2999 the function descriptor symbol, foo. Somewhere along the line, we need
3000 to carefully copy dynamic link information from one symbol to the other.
3001 Secondly, the generic part of the elf linker will make .foo a dynamic
3002 symbol as is normal for most other backends. We need foo dynamic
3003 instead, at least for an application final link. However, when
3004 creating a shared library containing foo, we need to have both symbols
3005 dynamic so that references to .foo are satisfied during the early
3006 stages of linking. Otherwise the linker might decide to pull in a
3007 definition from some other object, eg. a static library.
3009 Update: As of August 2004, we support a new convention. Function
3010 calls may use the function descriptor symbol, ie. "bl foo". This
3011 behaves exactly as "bl .foo". */
3013 /* The linker needs to keep track of the number of relocs that it
3014 decides to copy as dynamic relocs in check_relocs for each symbol.
3015 This is so that it can later discard them if they are found to be
3016 unnecessary. We store the information in a field extending the
3017 regular ELF linker hash table. */
3019 struct ppc_dyn_relocs
3021 struct ppc_dyn_relocs *next;
3023 /* The input section of the reloc. */
3026 /* Total number of relocs copied for the input section. */
3027 bfd_size_type count;
3029 /* Number of pc-relative relocs copied for the input section. */
3030 bfd_size_type pc_count;
3033 /* Track GOT entries needed for a given symbol. We might need more
3034 than one got entry per symbol. */
3037 struct got_entry *next;
3039 /* The symbol addend that we'll be placing in the GOT. */
3042 /* Unlike other ELF targets, we use separate GOT entries for the same
3043 symbol referenced from different input files. This is to support
3044 automatic multiple TOC/GOT sections, where the TOC base can vary
3045 from one input file to another.
3047 Point to the BFD owning this GOT entry. */
3050 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3051 TLS_TPREL or TLS_DTPREL for tls entries. */
3054 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3057 bfd_signed_vma refcount;
3062 /* The same for PLT. */
3065 struct plt_entry *next;
3071 bfd_signed_vma refcount;
3076 /* Of those relocs that might be copied as dynamic relocs, this macro
3077 selects those that must be copied when linking a shared library,
3078 even when the symbol is local. */
3080 #define MUST_BE_DYN_RELOC(RTYPE) \
3081 ((RTYPE) != R_PPC64_REL32 \
3082 && (RTYPE) != R_PPC64_REL64 \
3083 && (RTYPE) != R_PPC64_REL30)
3085 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3086 copying dynamic variables from a shared lib into an app's dynbss
3087 section, and instead use a dynamic relocation to point into the
3088 shared lib. With code that gcc generates, it's vital that this be
3089 enabled; In the PowerPC64 ABI, the address of a function is actually
3090 the address of a function descriptor, which resides in the .opd
3091 section. gcc uses the descriptor directly rather than going via the
3092 GOT as some other ABI's do, which means that initialized function
3093 pointers must reference the descriptor. Thus, a function pointer
3094 initialized to the address of a function in a shared library will
3095 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3096 redefines the function descriptor symbol to point to the copy. This
3097 presents a problem as a plt entry for that function is also
3098 initialized from the function descriptor symbol and the copy reloc
3099 may not be initialized first. */
3100 #define ELIMINATE_COPY_RELOCS 1
3102 /* Section name for stubs is the associated section name plus this
3104 #define STUB_SUFFIX ".stub"
3107 ppc_stub_long_branch:
3108 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3109 destination, but a 24 bit branch in a stub section will reach.
3112 ppc_stub_plt_branch:
3113 Similar to the above, but a 24 bit branch in the stub section won't
3114 reach its destination.
3115 . addis %r12,%r2,xxx@toc@ha
3116 . ld %r11,xxx@toc@l(%r12)
3121 Used to call a function in a shared library. If it so happens that
3122 the plt entry referenced crosses a 64k boundary, then an extra
3123 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3124 xxx+16 as appropriate.
3125 . addis %r12,%r2,xxx@toc@ha
3127 . ld %r11,xxx+0@toc@l(%r12)
3128 . ld %r2,xxx+8@toc@l(%r12)
3130 . ld %r11,xxx+16@toc@l(%r12)
3133 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3134 code to adjust the value and save r2 to support multiple toc sections.
3135 A ppc_stub_long_branch with an r2 offset looks like:
3137 . addis %r2,%r2,off@ha
3138 . addi %r2,%r2,off@l
3141 A ppc_stub_plt_branch with an r2 offset looks like:
3143 . addis %r12,%r2,xxx@toc@ha
3144 . ld %r11,xxx@toc@l(%r12)
3145 . addis %r2,%r2,off@ha
3146 . addi %r2,%r2,off@l
3151 enum ppc_stub_type {
3153 ppc_stub_long_branch,
3154 ppc_stub_long_branch_r2off,
3155 ppc_stub_plt_branch,
3156 ppc_stub_plt_branch_r2off,
3160 struct ppc_stub_hash_entry {
3162 /* Base hash table entry structure. */
3163 struct bfd_hash_entry root;
3165 enum ppc_stub_type stub_type;
3167 /* The stub section. */
3170 /* Offset within stub_sec of the beginning of this stub. */
3171 bfd_vma stub_offset;
3173 /* Given the symbol's value and its section we can determine its final
3174 value when building the stubs (so the stub knows where to jump. */
3175 bfd_vma target_value;
3176 asection *target_section;
3178 /* The symbol table entry, if any, that this was derived from. */
3179 struct ppc_link_hash_entry *h;
3181 /* And the reloc addend that this was derived from. */
3184 /* Where this stub is being called from, or, in the case of combined
3185 stub sections, the first input section in the group. */
3189 struct ppc_branch_hash_entry {
3191 /* Base hash table entry structure. */
3192 struct bfd_hash_entry root;
3194 /* Offset within .branch_lt. */
3195 unsigned int offset;
3197 /* Generation marker. */
3201 struct ppc_link_hash_entry
3203 struct elf_link_hash_entry elf;
3205 /* A pointer to the most recently used stub hash entry against this
3207 struct ppc_stub_hash_entry *stub_cache;
3209 /* Track dynamic relocs copied for this symbol. */
3210 struct ppc_dyn_relocs *dyn_relocs;
3212 /* Link between function code and descriptor symbols. */
3213 struct ppc_link_hash_entry *oh;
3215 /* Flag function code and descriptor symbols. */
3216 unsigned int is_func:1;
3217 unsigned int is_func_descriptor:1;
3219 /* Whether global opd sym has been adjusted or not.
3220 After ppc64_elf_edit_opd has run, this flag should be set for all
3221 globals defined in any opd section. */
3222 unsigned int adjust_done:1;
3224 /* Set if we twiddled this symbol to weak at some stage. */
3225 unsigned int was_undefined:1;
3227 /* Contexts in which symbol is used in the GOT (or TOC).
3228 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3229 corresponding relocs are encountered during check_relocs.
3230 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3231 indicate the corresponding GOT entry type is not needed.
3232 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3233 a TPREL one. We use a separate flag rather than setting TPREL
3234 just for convenience in distinguishing the two cases. */
3235 #define TLS_GD 1 /* GD reloc. */
3236 #define TLS_LD 2 /* LD reloc. */
3237 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3238 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3239 #define TLS_TLS 16 /* Any TLS reloc. */
3240 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3241 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3245 /* ppc64 ELF linker hash table. */
3247 struct ppc_link_hash_table
3249 struct elf_link_hash_table elf;
3251 /* The stub hash table. */
3252 struct bfd_hash_table stub_hash_table;
3254 /* Another hash table for plt_branch stubs. */
3255 struct bfd_hash_table branch_hash_table;
3257 /* Linker stub bfd. */
3260 /* Linker call-backs. */
3261 asection * (*add_stub_section) (const char *, asection *);
3262 void (*layout_sections_again) (void);
3264 /* Array to keep track of which stub sections have been created, and
3265 information on stub grouping. */
3267 /* This is the section to which stubs in the group will be attached. */
3269 /* The stub section. */
3271 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3275 /* Temp used when calculating TOC pointers. */
3278 /* Highest input section id. */
3281 /* Highest output section index. */
3284 /* List of input sections for each output section. */
3285 asection **input_list;
3287 /* Short-cuts to get to dynamic linker sections. */
3298 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3299 struct ppc_link_hash_entry *tls_get_addr;
3300 struct ppc_link_hash_entry *tls_get_addr_fd;
3303 unsigned long stub_count[ppc_stub_plt_call];
3305 /* Set if we should emit symbols for stubs. */
3306 unsigned int emit_stub_syms:1;
3309 unsigned int stub_error:1;
3311 /* Flag set when small branches are detected. Used to
3312 select suitable defaults for the stub group size. */
3313 unsigned int has_14bit_branch:1;
3315 /* Temp used by ppc64_elf_check_directives. */
3316 unsigned int twiddled_syms:1;
3318 /* Incremented every time we size stubs. */
3319 unsigned int stub_iteration;
3321 /* Small local sym to section mapping cache. */
3322 struct sym_sec_cache sym_sec;
3325 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3327 #define ppc_hash_table(p) \
3328 ((struct ppc_link_hash_table *) ((p)->hash))
3330 #define ppc_stub_hash_lookup(table, string, create, copy) \
3331 ((struct ppc_stub_hash_entry *) \
3332 bfd_hash_lookup ((table), (string), (create), (copy)))
3334 #define ppc_branch_hash_lookup(table, string, create, copy) \
3335 ((struct ppc_branch_hash_entry *) \
3336 bfd_hash_lookup ((table), (string), (create), (copy)))
3338 /* Create an entry in the stub hash table. */
3340 static struct bfd_hash_entry *
3341 stub_hash_newfunc (struct bfd_hash_entry *entry,
3342 struct bfd_hash_table *table,
3345 /* Allocate the structure if it has not already been allocated by a
3349 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3354 /* Call the allocation method of the superclass. */
3355 entry = bfd_hash_newfunc (entry, table, string);
3358 struct ppc_stub_hash_entry *eh;
3360 /* Initialize the local fields. */
3361 eh = (struct ppc_stub_hash_entry *) entry;
3362 eh->stub_type = ppc_stub_none;
3363 eh->stub_sec = NULL;
3364 eh->stub_offset = 0;
3365 eh->target_value = 0;
3366 eh->target_section = NULL;
3374 /* Create an entry in the branch hash table. */
3376 static struct bfd_hash_entry *
3377 branch_hash_newfunc (struct bfd_hash_entry *entry,
3378 struct bfd_hash_table *table,
3381 /* Allocate the structure if it has not already been allocated by a
3385 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3390 /* Call the allocation method of the superclass. */
3391 entry = bfd_hash_newfunc (entry, table, string);
3394 struct ppc_branch_hash_entry *eh;
3396 /* Initialize the local fields. */
3397 eh = (struct ppc_branch_hash_entry *) entry;
3405 /* Create an entry in a ppc64 ELF linker hash table. */
3407 static struct bfd_hash_entry *
3408 link_hash_newfunc (struct bfd_hash_entry *entry,
3409 struct bfd_hash_table *table,
3412 /* Allocate the structure if it has not already been allocated by a
3416 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3421 /* Call the allocation method of the superclass. */
3422 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3425 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3427 eh->stub_cache = NULL;
3428 eh->dyn_relocs = NULL;
3431 eh->is_func_descriptor = 0;
3432 eh->adjust_done = 0;
3433 eh->was_undefined = 0;
3440 /* Create a ppc64 ELF linker hash table. */
3442 static struct bfd_link_hash_table *
3443 ppc64_elf_link_hash_table_create (bfd *abfd)
3445 struct ppc_link_hash_table *htab;
3446 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3448 htab = bfd_zmalloc (amt);
3452 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3458 /* Init the stub hash table too. */
3459 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3462 /* And the branch hash table. */
3463 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3466 /* Initializing two fields of the union is just cosmetic. We really
3467 only care about glist, but when compiled on a 32-bit host the
3468 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3469 debugger inspection of these fields look nicer. */
3470 htab->elf.init_refcount.refcount = 0;
3471 htab->elf.init_refcount.glist = NULL;
3472 htab->elf.init_offset.offset = 0;
3473 htab->elf.init_offset.glist = NULL;
3475 return &htab->elf.root;
3478 /* Free the derived linker hash table. */
3481 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3483 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3485 bfd_hash_table_free (&ret->stub_hash_table);
3486 bfd_hash_table_free (&ret->branch_hash_table);
3487 _bfd_generic_link_hash_table_free (hash);
3490 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3493 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3495 struct ppc_link_hash_table *htab;
3497 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3499 /* Always hook our dynamic sections into the first bfd, which is the
3500 linker created stub bfd. This ensures that the GOT header is at
3501 the start of the output TOC section. */
3502 htab = ppc_hash_table (info);
3503 htab->stub_bfd = abfd;
3504 htab->elf.dynobj = abfd;
3507 /* Build a name for an entry in the stub hash table. */
3510 ppc_stub_name (const asection *input_section,
3511 const asection *sym_sec,
3512 const struct ppc_link_hash_entry *h,
3513 const Elf_Internal_Rela *rel)
3518 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3519 offsets from a sym as a branch target? In fact, we could
3520 probably assume the addend is always zero. */
3521 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3525 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3526 stub_name = bfd_malloc (len);
3527 if (stub_name != NULL)
3529 sprintf (stub_name, "%08x.%s+%x",
3530 input_section->id & 0xffffffff,
3531 h->elf.root.root.string,
3532 (int) rel->r_addend & 0xffffffff);
3537 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3538 stub_name = bfd_malloc (len);
3539 if (stub_name != NULL)
3541 sprintf (stub_name, "%08x.%x:%x+%x",
3542 input_section->id & 0xffffffff,
3543 sym_sec->id & 0xffffffff,
3544 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3545 (int) rel->r_addend & 0xffffffff);
3551 /* Look up an entry in the stub hash. Stub entries are cached because
3552 creating the stub name takes a bit of time. */
3554 static struct ppc_stub_hash_entry *
3555 ppc_get_stub_entry (const asection *input_section,
3556 const asection *sym_sec,
3557 struct ppc_link_hash_entry *h,
3558 const Elf_Internal_Rela *rel,
3559 struct ppc_link_hash_table *htab)
3561 struct ppc_stub_hash_entry *stub_entry;
3562 const asection *id_sec;
3564 /* If this input section is part of a group of sections sharing one
3565 stub section, then use the id of the first section in the group.
3566 Stub names need to include a section id, as there may well be
3567 more than one stub used to reach say, printf, and we need to
3568 distinguish between them. */
3569 id_sec = htab->stub_group[input_section->id].link_sec;
3571 if (h != NULL && h->stub_cache != NULL
3572 && h->stub_cache->h == h
3573 && h->stub_cache->id_sec == id_sec)
3575 stub_entry = h->stub_cache;
3581 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3582 if (stub_name == NULL)
3585 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3586 stub_name, FALSE, FALSE);
3588 h->stub_cache = stub_entry;
3596 /* Add a new stub entry to the stub hash. Not all fields of the new
3597 stub entry are initialised. */
3599 static struct ppc_stub_hash_entry *
3600 ppc_add_stub (const char *stub_name,
3602 struct ppc_link_hash_table *htab)
3606 struct ppc_stub_hash_entry *stub_entry;
3608 link_sec = htab->stub_group[section->id].link_sec;
3609 stub_sec = htab->stub_group[section->id].stub_sec;
3610 if (stub_sec == NULL)
3612 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3613 if (stub_sec == NULL)
3619 namelen = strlen (link_sec->name);
3620 len = namelen + sizeof (STUB_SUFFIX);
3621 s_name = bfd_alloc (htab->stub_bfd, len);
3625 memcpy (s_name, link_sec->name, namelen);
3626 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3627 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3628 if (stub_sec == NULL)
3630 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3632 htab->stub_group[section->id].stub_sec = stub_sec;
3635 /* Enter this entry into the linker stub hash table. */
3636 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3638 if (stub_entry == NULL)
3640 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3641 section->owner, stub_name);
3645 stub_entry->stub_sec = stub_sec;
3646 stub_entry->stub_offset = 0;
3647 stub_entry->id_sec = link_sec;
3651 /* Create sections for linker generated code. */
3654 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3656 struct ppc_link_hash_table *htab;
3659 htab = ppc_hash_table (info);
3661 /* Create .sfpr for code to save and restore fp regs. */
3662 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3663 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3664 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3665 if (htab->sfpr == NULL
3666 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3667 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3670 /* Create .glink for lazy dynamic linking support. */
3671 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3672 if (htab->glink == NULL
3673 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3674 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3677 /* Create .branch_lt for plt_branch stubs. */
3678 flags = (SEC_ALLOC | SEC_LOAD
3679 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3680 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3681 if (htab->brlt == NULL
3682 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3683 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3688 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3689 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3690 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3692 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3693 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3699 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3700 not already done. */
3703 create_got_section (bfd *abfd, struct bfd_link_info *info)
3705 asection *got, *relgot;
3707 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3711 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3714 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3719 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3720 | SEC_LINKER_CREATED);
3722 got = bfd_make_section (abfd, ".got");
3724 || !bfd_set_section_flags (abfd, got, flags)
3725 || !bfd_set_section_alignment (abfd, got, 3))
3728 relgot = bfd_make_section (abfd, ".rela.got");
3730 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3731 || ! bfd_set_section_alignment (abfd, relgot, 3))
3734 ppc64_elf_tdata (abfd)->got = got;
3735 ppc64_elf_tdata (abfd)->relgot = relgot;
3739 /* Create the dynamic sections, and set up shortcuts. */
3742 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3744 struct ppc_link_hash_table *htab;
3746 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3749 htab = ppc_hash_table (info);
3751 htab->got = bfd_get_section_by_name (dynobj, ".got");
3752 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3753 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3754 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3756 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3758 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3759 || (!info->shared && !htab->relbss))
3765 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3768 ppc64_elf_copy_indirect_symbol
3769 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3770 struct elf_link_hash_entry *dir,
3771 struct elf_link_hash_entry *ind)
3773 struct ppc_link_hash_entry *edir, *eind;
3776 edir = (struct ppc_link_hash_entry *) dir;
3777 eind = (struct ppc_link_hash_entry *) ind;
3779 /* Copy over any dynamic relocs we may have on the indirect sym. */
3780 if (eind->dyn_relocs != NULL)
3782 if (edir->dyn_relocs != NULL)
3784 struct ppc_dyn_relocs **pp;
3785 struct ppc_dyn_relocs *p;
3787 if (eind->elf.root.type == bfd_link_hash_indirect)
3790 /* Add reloc counts against the weak sym to the strong sym
3791 list. Merge any entries against the same section. */
3792 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3794 struct ppc_dyn_relocs *q;
3796 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3797 if (q->sec == p->sec)
3799 q->pc_count += p->pc_count;
3800 q->count += p->count;
3807 *pp = edir->dyn_relocs;
3810 edir->dyn_relocs = eind->dyn_relocs;
3811 eind->dyn_relocs = NULL;
3814 edir->is_func |= eind->is_func;
3815 edir->is_func_descriptor |= eind->is_func_descriptor;
3816 edir->tls_mask |= eind->tls_mask;
3818 mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR
3819 | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF
3820 | ELF_LINK_HASH_NEEDS_PLT);
3821 /* If called to transfer flags for a weakdef during processing
3822 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_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.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
3827 mask &= ~ELF_LINK_NON_GOT_REF;
3829 edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask;
3831 /* If we were called to copy over info for a weak sym, that's all. */
3832 if (eind->elf.root.type != bfd_link_hash_indirect)
3835 /* Copy over got entries that we may have already seen to the
3836 symbol which just became indirect. */
3837 if (eind->elf.got.glist != NULL)
3839 if (edir->elf.got.glist != NULL)
3841 struct got_entry **entp;
3842 struct got_entry *ent;
3844 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3846 struct got_entry *dent;
3848 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3849 if (dent->addend == ent->addend
3850 && dent->owner == ent->owner
3851 && dent->tls_type == ent->tls_type)
3853 dent->got.refcount += ent->got.refcount;
3860 *entp = edir->elf.got.glist;
3863 edir->elf.got.glist = eind->elf.got.glist;
3864 eind->elf.got.glist = NULL;
3867 /* And plt entries. */
3868 if (eind->elf.plt.plist != NULL)
3870 if (edir->elf.plt.plist != NULL)
3872 struct plt_entry **entp;
3873 struct plt_entry *ent;
3875 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3877 struct plt_entry *dent;
3879 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3880 if (dent->addend == ent->addend)
3882 dent->plt.refcount += ent->plt.refcount;
3889 *entp = edir->elf.plt.plist;
3892 edir->elf.plt.plist = eind->elf.plt.plist;
3893 eind->elf.plt.plist = NULL;
3896 if (edir->elf.dynindx == -1)
3898 edir->elf.dynindx = eind->elf.dynindx;
3899 edir->elf.dynstr_index = eind->elf.dynstr_index;
3900 eind->elf.dynindx = -1;
3901 eind->elf.dynstr_index = 0;
3904 BFD_ASSERT (eind->elf.dynindx == -1);
3907 /* Find the function descriptor hash entry from the given function code
3908 hash entry FH. Link the entries via their OH fields. */
3910 static struct ppc_link_hash_entry *
3911 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3913 struct ppc_link_hash_entry *fdh = fh->oh;
3917 const char *fd_name = fh->elf.root.root.string + 1;
3919 fdh = (struct ppc_link_hash_entry *)
3920 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3923 fdh->is_func_descriptor = 1;
3933 /* Hacks to support old ABI code.
3934 When making function calls, old ABI code references function entry
3935 points (dot symbols), while new ABI code references the function
3936 descriptor symbol. We need to make any combination of reference and
3937 definition work together, without breaking archive linking.
3939 For a defined function "foo" and an undefined call to "bar":
3940 An old object defines "foo" and ".foo", references ".bar" (possibly
3942 A new object defines "foo" and references "bar".
3944 A new object thus has no problem with its undefined symbols being
3945 satisfied by definitions in an old object. On the other hand, the
3946 old object won't have ".bar" satisfied by a new object. */
3948 /* Fix function descriptor symbols defined in .opd sections to be
3952 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
3953 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3954 Elf_Internal_Sym *isym,
3955 const char **name ATTRIBUTE_UNUSED,
3956 flagword *flags ATTRIBUTE_UNUSED,
3958 bfd_vma *value ATTRIBUTE_UNUSED)
3961 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
3962 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
3966 /* This function makes an old ABI object reference to ".bar" cause the
3967 inclusion of a new ABI object archive that defines "bar". */
3969 static struct elf_link_hash_entry *
3970 ppc64_elf_archive_symbol_lookup (bfd *abfd,
3971 struct bfd_link_info *info,
3974 struct elf_link_hash_entry *h;
3978 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
3985 len = strlen (name);
3986 dot_name = bfd_alloc (abfd, len + 2);
3987 if (dot_name == NULL)
3988 return (struct elf_link_hash_entry *) 0 - 1;
3990 memcpy (dot_name + 1, name, len + 1);
3991 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
3992 bfd_release (abfd, dot_name);
3996 /* This function satisfies all old ABI object references to ".bar" if a
3997 new ABI object defines "bar". Well, at least, undefined dot symbols
3998 are made weak. This stops later archive searches from including an
3999 object if we already have a function descriptor definition. It also
4000 prevents the linker complaining about undefined symbols.
4001 We also check and correct mismatched symbol visibility here. The
4002 most restrictive visibility of the function descriptor and the
4003 function entry symbol is used. */
4006 add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4008 struct bfd_link_info *info;
4009 struct ppc_link_hash_table *htab;
4010 struct ppc_link_hash_entry *eh;
4011 struct ppc_link_hash_entry *fdh;
4013 if (h->root.type == bfd_link_hash_indirect)
4016 if (h->root.type == bfd_link_hash_warning)
4017 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4019 if (h->root.root.string[0] != '.')
4023 htab = ppc_hash_table (info);
4024 eh = (struct ppc_link_hash_entry *) h;
4025 fdh = get_fdh (eh, htab);
4028 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4029 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4030 if (entry_vis < descr_vis)
4031 fdh->elf.other += entry_vis - descr_vis;
4032 else if (entry_vis > descr_vis)
4033 eh->elf.other += descr_vis - entry_vis;
4035 if (eh->elf.root.type == bfd_link_hash_undefined)
4037 eh->elf.root.type = bfd_link_hash_undefweak;
4038 eh->was_undefined = 1;
4039 htab->twiddled_syms = 1;
4047 ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4048 struct bfd_link_info *info)
4050 struct ppc_link_hash_table *htab;
4051 extern const bfd_target bfd_elf64_powerpc_vec;
4052 extern const bfd_target bfd_elf64_powerpcle_vec;
4054 htab = ppc_hash_table (info);
4055 if (htab->elf.root.creator != &bfd_elf64_powerpc_vec
4056 && htab->elf.root.creator != &bfd_elf64_powerpcle_vec)
4059 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, info);
4061 /* We need to fix the undefs list for any syms we have twiddled to
4063 if (htab->twiddled_syms)
4065 struct bfd_link_hash_entry **pun;
4067 pun = &htab->elf.root.undefs;
4068 while (*pun != NULL)
4070 struct bfd_link_hash_entry *h = *pun;
4072 if (h->type != bfd_link_hash_undefined
4073 && h->type != bfd_link_hash_common)
4077 if (h == htab->elf.root.undefs_tail)
4079 if (pun == &htab->elf.root.undefs)
4080 htab->elf.root.undefs_tail = NULL;
4082 /* pun points at an und_next field. Go back to
4083 the start of the link_hash_entry. */
4084 htab->elf.root.undefs_tail = (struct bfd_link_hash_entry *)
4085 ((char *) pun - ((char *) &h->und_next - (char *) h));
4093 htab->twiddled_syms = 0;
4099 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4100 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4102 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4103 char *local_got_tls_masks;
4105 if (local_got_ents == NULL)
4107 bfd_size_type size = symtab_hdr->sh_info;
4109 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4110 local_got_ents = bfd_zalloc (abfd, size);
4111 if (local_got_ents == NULL)
4113 elf_local_got_ents (abfd) = local_got_ents;
4116 if ((tls_type & TLS_EXPLICIT) == 0)
4118 struct got_entry *ent;
4120 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4121 if (ent->addend == r_addend
4122 && ent->owner == abfd
4123 && ent->tls_type == tls_type)
4127 bfd_size_type amt = sizeof (*ent);
4128 ent = bfd_alloc (abfd, amt);
4131 ent->next = local_got_ents[r_symndx];
4132 ent->addend = r_addend;
4134 ent->tls_type = tls_type;
4135 ent->got.refcount = 0;
4136 local_got_ents[r_symndx] = ent;
4138 ent->got.refcount += 1;
4141 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4142 local_got_tls_masks[r_symndx] |= tls_type;
4147 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4149 struct plt_entry *ent;
4151 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4152 if (ent->addend == addend)
4156 bfd_size_type amt = sizeof (*ent);
4157 ent = bfd_alloc (abfd, amt);
4160 ent->next = eh->elf.plt.plist;
4161 ent->addend = addend;
4162 ent->plt.refcount = 0;
4163 eh->elf.plt.plist = ent;
4165 ent->plt.refcount += 1;
4166 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4171 /* Look through the relocs for a section during the first phase, and
4172 calculate needed space in the global offset table, procedure
4173 linkage table, and dynamic reloc sections. */
4176 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4177 asection *sec, const Elf_Internal_Rela *relocs)
4179 struct ppc_link_hash_table *htab;
4180 Elf_Internal_Shdr *symtab_hdr;
4181 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4182 const Elf_Internal_Rela *rel;
4183 const Elf_Internal_Rela *rel_end;
4185 asection **opd_sym_map;
4187 if (info->relocatable)
4190 /* Don't do anything special with non-loaded, non-alloced sections.
4191 In particular, any relocs in such sections should not affect GOT
4192 and PLT reference counting (ie. we don't allow them to create GOT
4193 or PLT entries), there's no possibility or desire to optimize TLS
4194 relocs, and there's not much point in propagating relocs to shared
4195 libs that the dynamic linker won't relocate. */
4196 if ((sec->flags & SEC_ALLOC) == 0)
4199 htab = ppc_hash_table (info);
4200 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4202 sym_hashes = elf_sym_hashes (abfd);
4203 sym_hashes_end = (sym_hashes
4204 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4205 - symtab_hdr->sh_info);
4209 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4211 /* Garbage collection needs some extra help with .opd sections.
4212 We don't want to necessarily keep everything referenced by
4213 relocs in .opd, as that would keep all functions. Instead,
4214 if we reference an .opd symbol (a function descriptor), we
4215 want to keep the function code symbol's section. This is
4216 easy for global symbols, but for local syms we need to keep
4217 information about the associated function section. Later, if
4218 edit_opd deletes entries, we'll use this array to adjust
4219 local syms in .opd. */
4221 asection *func_section;
4226 amt = sec->size * sizeof (union opd_info) / 8;
4227 opd_sym_map = bfd_zalloc (abfd, amt);
4228 if (opd_sym_map == NULL)
4230 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
4233 if (htab->sfpr == NULL
4234 && !create_linkage_sections (htab->elf.dynobj, info))
4237 rel_end = relocs + sec->reloc_count;
4238 for (rel = relocs; rel < rel_end; rel++)
4240 unsigned long r_symndx;
4241 struct elf_link_hash_entry *h;
4242 enum elf_ppc64_reloc_type r_type;
4245 r_symndx = ELF64_R_SYM (rel->r_info);
4246 if (r_symndx < symtab_hdr->sh_info)
4249 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4251 r_type = ELF64_R_TYPE (rel->r_info);
4254 case R_PPC64_GOT_TLSLD16:
4255 case R_PPC64_GOT_TLSLD16_LO:
4256 case R_PPC64_GOT_TLSLD16_HI:
4257 case R_PPC64_GOT_TLSLD16_HA:
4258 ppc64_tlsld_got (abfd)->refcount += 1;
4259 tls_type = TLS_TLS | TLS_LD;
4262 case R_PPC64_GOT_TLSGD16:
4263 case R_PPC64_GOT_TLSGD16_LO:
4264 case R_PPC64_GOT_TLSGD16_HI:
4265 case R_PPC64_GOT_TLSGD16_HA:
4266 tls_type = TLS_TLS | TLS_GD;
4269 case R_PPC64_GOT_TPREL16_DS:
4270 case R_PPC64_GOT_TPREL16_LO_DS:
4271 case R_PPC64_GOT_TPREL16_HI:
4272 case R_PPC64_GOT_TPREL16_HA:
4274 info->flags |= DF_STATIC_TLS;
4275 tls_type = TLS_TLS | TLS_TPREL;
4278 case R_PPC64_GOT_DTPREL16_DS:
4279 case R_PPC64_GOT_DTPREL16_LO_DS:
4280 case R_PPC64_GOT_DTPREL16_HI:
4281 case R_PPC64_GOT_DTPREL16_HA:
4282 tls_type = TLS_TLS | TLS_DTPREL;
4284 sec->has_tls_reloc = 1;
4288 case R_PPC64_GOT16_DS:
4289 case R_PPC64_GOT16_HA:
4290 case R_PPC64_GOT16_HI:
4291 case R_PPC64_GOT16_LO:
4292 case R_PPC64_GOT16_LO_DS:
4293 /* This symbol requires a global offset table entry. */
4294 sec->has_gp_reloc = 1;
4295 if (ppc64_elf_tdata (abfd)->got == NULL
4296 && !create_got_section (abfd, info))
4301 struct ppc_link_hash_entry *eh;
4302 struct got_entry *ent;
4304 eh = (struct ppc_link_hash_entry *) h;
4305 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4306 if (ent->addend == rel->r_addend
4307 && ent->owner == abfd
4308 && ent->tls_type == tls_type)
4312 bfd_size_type amt = sizeof (*ent);
4313 ent = bfd_alloc (abfd, amt);
4316 ent->next = eh->elf.got.glist;
4317 ent->addend = rel->r_addend;
4319 ent->tls_type = tls_type;
4320 ent->got.refcount = 0;
4321 eh->elf.got.glist = ent;
4323 ent->got.refcount += 1;
4324 eh->tls_mask |= tls_type;
4327 /* This is a global offset table entry for a local symbol. */
4328 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4329 rel->r_addend, tls_type))
4333 case R_PPC64_PLT16_HA:
4334 case R_PPC64_PLT16_HI:
4335 case R_PPC64_PLT16_LO:
4338 /* This symbol requires a procedure linkage table entry. We
4339 actually build the entry in adjust_dynamic_symbol,
4340 because this might be a case of linking PIC code without
4341 linking in any dynamic objects, in which case we don't
4342 need to generate a procedure linkage table after all. */
4345 /* It does not make sense to have a procedure linkage
4346 table entry for a local symbol. */
4347 bfd_set_error (bfd_error_bad_value);
4351 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4356 /* The following relocations don't need to propagate the
4357 relocation if linking a shared object since they are
4358 section relative. */
4359 case R_PPC64_SECTOFF:
4360 case R_PPC64_SECTOFF_LO:
4361 case R_PPC64_SECTOFF_HI:
4362 case R_PPC64_SECTOFF_HA:
4363 case R_PPC64_SECTOFF_DS:
4364 case R_PPC64_SECTOFF_LO_DS:
4365 case R_PPC64_DTPREL16:
4366 case R_PPC64_DTPREL16_LO:
4367 case R_PPC64_DTPREL16_HI:
4368 case R_PPC64_DTPREL16_HA:
4369 case R_PPC64_DTPREL16_DS:
4370 case R_PPC64_DTPREL16_LO_DS:
4371 case R_PPC64_DTPREL16_HIGHER:
4372 case R_PPC64_DTPREL16_HIGHERA:
4373 case R_PPC64_DTPREL16_HIGHEST:
4374 case R_PPC64_DTPREL16_HIGHESTA:
4379 case R_PPC64_TOC16_LO:
4380 case R_PPC64_TOC16_HI:
4381 case R_PPC64_TOC16_HA:
4382 case R_PPC64_TOC16_DS:
4383 case R_PPC64_TOC16_LO_DS:
4384 sec->has_gp_reloc = 1;
4387 /* This relocation describes the C++ object vtable hierarchy.
4388 Reconstruct it for later use during GC. */
4389 case R_PPC64_GNU_VTINHERIT:
4390 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4394 /* This relocation describes which C++ vtable entries are actually
4395 used. Record for later use during GC. */
4396 case R_PPC64_GNU_VTENTRY:
4397 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4402 case R_PPC64_REL14_BRTAKEN:
4403 case R_PPC64_REL14_BRNTAKEN:
4404 htab->has_14bit_branch = 1;
4410 /* We may need a .plt entry if the function this reloc
4411 refers to is in a shared lib. */
4412 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4415 if (h == &htab->tls_get_addr->elf
4416 || h == &htab->tls_get_addr_fd->elf)
4417 sec->has_tls_reloc = 1;
4418 else if (htab->tls_get_addr == NULL
4419 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
4420 && (h->root.root.string[15] == 0
4421 || h->root.root.string[15] == '@'))
4423 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4424 sec->has_tls_reloc = 1;
4426 else if (htab->tls_get_addr_fd == NULL
4427 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4428 && (h->root.root.string[14] == 0
4429 || h->root.root.string[14] == '@'))
4431 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4432 sec->has_tls_reloc = 1;
4437 case R_PPC64_TPREL64:
4438 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4440 info->flags |= DF_STATIC_TLS;
4443 case R_PPC64_DTPMOD64:
4444 if (rel + 1 < rel_end
4445 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4446 && rel[1].r_offset == rel->r_offset + 8)
4447 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4449 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4452 case R_PPC64_DTPREL64:
4453 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4455 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4456 && rel[-1].r_offset == rel->r_offset - 8)
4457 /* This is the second reloc of a dtpmod, dtprel pair.
4458 Don't mark with TLS_DTPREL. */
4462 sec->has_tls_reloc = 1;
4465 struct ppc_link_hash_entry *eh;
4466 eh = (struct ppc_link_hash_entry *) h;
4467 eh->tls_mask |= tls_type;
4470 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4471 rel->r_addend, tls_type))
4474 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4476 /* One extra to simplify get_tls_mask. */
4477 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4478 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4479 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4482 BFD_ASSERT (rel->r_offset % 8 == 0);
4483 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4485 /* Mark the second slot of a GD or LD entry.
4486 -1 to indicate GD and -2 to indicate LD. */
4487 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4488 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4489 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4490 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4493 case R_PPC64_TPREL16:
4494 case R_PPC64_TPREL16_LO:
4495 case R_PPC64_TPREL16_HI:
4496 case R_PPC64_TPREL16_HA:
4497 case R_PPC64_TPREL16_DS:
4498 case R_PPC64_TPREL16_LO_DS:
4499 case R_PPC64_TPREL16_HIGHER:
4500 case R_PPC64_TPREL16_HIGHERA:
4501 case R_PPC64_TPREL16_HIGHEST:
4502 case R_PPC64_TPREL16_HIGHESTA:
4505 info->flags |= DF_STATIC_TLS;
4510 case R_PPC64_ADDR64:
4511 if (opd_sym_map != NULL
4512 && rel + 1 < rel_end
4513 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4517 if (h->root.root.string[0] == '.'
4518 && h->root.root.string[1] != 0
4519 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4522 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4528 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4533 opd_sym_map[rel->r_offset / 8] = s;
4541 case R_PPC64_ADDR14:
4542 case R_PPC64_ADDR14_BRNTAKEN:
4543 case R_PPC64_ADDR14_BRTAKEN:
4544 case R_PPC64_ADDR16:
4545 case R_PPC64_ADDR16_DS:
4546 case R_PPC64_ADDR16_HA:
4547 case R_PPC64_ADDR16_HI:
4548 case R_PPC64_ADDR16_HIGHER:
4549 case R_PPC64_ADDR16_HIGHERA:
4550 case R_PPC64_ADDR16_HIGHEST:
4551 case R_PPC64_ADDR16_HIGHESTA:
4552 case R_PPC64_ADDR16_LO:
4553 case R_PPC64_ADDR16_LO_DS:
4554 case R_PPC64_ADDR24:
4555 case R_PPC64_ADDR32:
4556 case R_PPC64_UADDR16:
4557 case R_PPC64_UADDR32:
4558 case R_PPC64_UADDR64:
4560 if (h != NULL && !info->shared)
4561 /* We may need a copy reloc. */
4562 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
4564 /* Don't propagate .opd relocs. */
4565 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4568 /* If we are creating a shared library, and this is a reloc
4569 against a global symbol, or a non PC relative reloc
4570 against a local symbol, then we need to copy the reloc
4571 into the shared library. However, if we are linking with
4572 -Bsymbolic, we do not need to copy a reloc against a
4573 global symbol which is defined in an object we are
4574 including in the link (i.e., DEF_REGULAR is set). At
4575 this point we have not seen all the input files, so it is
4576 possible that DEF_REGULAR is not set now but will be set
4577 later (it is never cleared). In case of a weak definition,
4578 DEF_REGULAR may be cleared later by a strong definition in
4579 a shared library. We account for that possibility below by
4580 storing information in the dyn_relocs field of the hash
4581 table entry. A similar situation occurs when creating
4582 shared libraries and symbol visibility changes render the
4585 If on the other hand, we are creating an executable, we
4586 may need to keep relocations for symbols satisfied by a
4587 dynamic library if we manage to avoid copy relocs for the
4591 && (MUST_BE_DYN_RELOC (r_type)
4593 && (! info->symbolic
4594 || h->root.type == bfd_link_hash_defweak
4595 || (h->elf_link_hash_flags
4596 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
4597 || (ELIMINATE_COPY_RELOCS
4600 && (h->root.type == bfd_link_hash_defweak
4601 || (h->elf_link_hash_flags
4602 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
4604 struct ppc_dyn_relocs *p;
4605 struct ppc_dyn_relocs **head;
4607 /* We must copy these reloc types into the output file.
4608 Create a reloc section in dynobj and make room for
4615 name = (bfd_elf_string_from_elf_section
4617 elf_elfheader (abfd)->e_shstrndx,
4618 elf_section_data (sec)->rel_hdr.sh_name));
4622 if (strncmp (name, ".rela", 5) != 0
4623 || strcmp (bfd_get_section_name (abfd, sec),
4626 (*_bfd_error_handler)
4627 (_("%B: bad relocation section name `%s\'"),
4629 bfd_set_error (bfd_error_bad_value);
4632 dynobj = htab->elf.dynobj;
4633 sreloc = bfd_get_section_by_name (dynobj, name);
4638 sreloc = bfd_make_section (dynobj, name);
4639 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4640 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4641 if ((sec->flags & SEC_ALLOC) != 0)
4642 flags |= SEC_ALLOC | SEC_LOAD;
4644 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4645 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4648 elf_section_data (sec)->sreloc = sreloc;
4651 /* If this is a global symbol, we count the number of
4652 relocations we need for this symbol. */
4655 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4659 /* Track dynamic relocs needed for local syms too.
4660 We really need local syms available to do this
4664 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4669 head = ((struct ppc_dyn_relocs **)
4670 &elf_section_data (s)->local_dynrel);
4674 if (p == NULL || p->sec != sec)
4676 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4687 if (!MUST_BE_DYN_RELOC (r_type))
4700 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4701 of the code entry point, and its section. */
4704 opd_entry_value (asection *opd_sec,
4706 asection **code_sec,
4709 bfd *opd_bfd = opd_sec->owner;
4710 Elf_Internal_Rela *lo, *hi, *look;
4712 /* Go find the opd reloc at the sym address. */
4713 lo = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4714 BFD_ASSERT (lo != NULL);
4715 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4719 look = lo + (hi - lo) / 2;
4720 if (look->r_offset < offset)
4722 else if (look->r_offset > offset)
4726 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4727 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4728 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4730 unsigned long symndx = ELF64_R_SYM (look->r_info);
4734 if (symndx < symtab_hdr->sh_info)
4736 Elf_Internal_Sym *sym;
4738 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4741 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4742 symtab_hdr->sh_info,
4743 0, NULL, NULL, NULL);
4745 return (bfd_vma) -1;
4746 symtab_hdr->contents = (bfd_byte *) sym;
4750 val = sym->st_value;
4752 if ((sym->st_shndx != SHN_UNDEF
4753 && sym->st_shndx < SHN_LORESERVE)
4754 || sym->st_shndx > SHN_HIRESERVE)
4755 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4756 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4760 struct elf_link_hash_entry **sym_hashes;
4761 struct elf_link_hash_entry *rh;
4763 sym_hashes = elf_sym_hashes (opd_bfd);
4764 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4765 while (rh->root.type == bfd_link_hash_indirect
4766 || rh->root.type == bfd_link_hash_warning)
4767 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4768 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4769 || rh->root.type == bfd_link_hash_defweak);
4770 val = rh->root.u.def.value;
4771 sec = rh->root.u.def.section;
4773 val += look->r_addend;
4774 if (code_off != NULL)
4776 if (code_sec != NULL)
4778 if (sec != NULL && sec->output_section != NULL)
4779 val += sec->output_section->vma + sec->output_offset;
4785 return (bfd_vma) -1;
4788 /* Return the section that should be marked against GC for a given
4792 ppc64_elf_gc_mark_hook (asection *sec,
4793 struct bfd_link_info *info,
4794 Elf_Internal_Rela *rel,
4795 struct elf_link_hash_entry *h,
4796 Elf_Internal_Sym *sym)
4800 /* First mark all our entry sym sections. */
4801 if (info->gc_sym_list != NULL)
4803 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4804 struct bfd_sym_chain *sym = info->gc_sym_list;
4806 info->gc_sym_list = NULL;
4809 struct ppc_link_hash_entry *eh;
4811 eh = (struct ppc_link_hash_entry *)
4812 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4815 if (eh->elf.root.type != bfd_link_hash_defined
4816 && eh->elf.root.type != bfd_link_hash_defweak)
4819 if (eh->is_func_descriptor)
4820 rsec = eh->oh->elf.root.u.def.section;
4821 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4822 && opd_entry_value (eh->elf.root.u.def.section,
4823 eh->elf.root.u.def.value,
4824 &rsec, NULL) != (bfd_vma) -1)
4830 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4832 rsec = eh->elf.root.u.def.section;
4834 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4838 while (sym != NULL);
4841 /* Syms return NULL if we're marking .opd, so we avoid marking all
4842 function sections, as all functions are referenced in .opd. */
4844 if (get_opd_info (sec) != NULL)
4849 enum elf_ppc64_reloc_type r_type;
4850 struct ppc_link_hash_entry *eh;
4852 r_type = ELF64_R_TYPE (rel->r_info);
4855 case R_PPC64_GNU_VTINHERIT:
4856 case R_PPC64_GNU_VTENTRY:
4860 switch (h->root.type)
4862 case bfd_link_hash_defined:
4863 case bfd_link_hash_defweak:
4864 eh = (struct ppc_link_hash_entry *) h;
4865 if (eh->oh != NULL && eh->oh->is_func_descriptor)
4868 /* Function descriptor syms cause the associated
4869 function code sym section to be marked. */
4870 if (eh->is_func_descriptor)
4872 /* They also mark their opd section. */
4873 if (!eh->elf.root.u.def.section->gc_mark)
4874 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4875 ppc64_elf_gc_mark_hook);
4877 rsec = eh->oh->elf.root.u.def.section;
4879 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4880 && opd_entry_value (eh->elf.root.u.def.section,
4881 eh->elf.root.u.def.value,
4882 &rsec, NULL) != (bfd_vma) -1)
4884 if (!eh->elf.root.u.def.section->gc_mark)
4885 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4886 ppc64_elf_gc_mark_hook);
4889 rsec = h->root.u.def.section;
4892 case bfd_link_hash_common:
4893 rsec = h->root.u.c.p->section;
4903 asection **opd_sym_section;
4905 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4906 opd_sym_section = get_opd_info (rsec);
4907 if (opd_sym_section != NULL)
4910 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4912 rsec = opd_sym_section[sym->st_value / 8];
4919 /* Update the .got, .plt. and dynamic reloc reference counts for the
4920 section being removed. */
4923 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4924 asection *sec, const Elf_Internal_Rela *relocs)
4926 struct ppc_link_hash_table *htab;
4927 Elf_Internal_Shdr *symtab_hdr;
4928 struct elf_link_hash_entry **sym_hashes;
4929 struct got_entry **local_got_ents;
4930 const Elf_Internal_Rela *rel, *relend;
4932 if ((sec->flags & SEC_ALLOC) == 0)
4935 elf_section_data (sec)->local_dynrel = NULL;
4937 htab = ppc_hash_table (info);
4938 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4939 sym_hashes = elf_sym_hashes (abfd);
4940 local_got_ents = elf_local_got_ents (abfd);
4942 relend = relocs + sec->reloc_count;
4943 for (rel = relocs; rel < relend; rel++)
4945 unsigned long r_symndx;
4946 enum elf_ppc64_reloc_type r_type;
4947 struct elf_link_hash_entry *h = NULL;
4950 r_symndx = ELF64_R_SYM (rel->r_info);
4951 r_type = ELF64_R_TYPE (rel->r_info);
4952 if (r_symndx >= symtab_hdr->sh_info)
4954 struct ppc_link_hash_entry *eh;
4955 struct ppc_dyn_relocs **pp;
4956 struct ppc_dyn_relocs *p;
4958 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4959 eh = (struct ppc_link_hash_entry *) h;
4961 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4964 /* Everything must go for SEC. */
4972 case R_PPC64_GOT_TLSLD16:
4973 case R_PPC64_GOT_TLSLD16_LO:
4974 case R_PPC64_GOT_TLSLD16_HI:
4975 case R_PPC64_GOT_TLSLD16_HA:
4976 ppc64_tlsld_got (abfd)->refcount -= 1;
4977 tls_type = TLS_TLS | TLS_LD;
4980 case R_PPC64_GOT_TLSGD16:
4981 case R_PPC64_GOT_TLSGD16_LO:
4982 case R_PPC64_GOT_TLSGD16_HI:
4983 case R_PPC64_GOT_TLSGD16_HA:
4984 tls_type = TLS_TLS | TLS_GD;
4987 case R_PPC64_GOT_TPREL16_DS:
4988 case R_PPC64_GOT_TPREL16_LO_DS:
4989 case R_PPC64_GOT_TPREL16_HI:
4990 case R_PPC64_GOT_TPREL16_HA:
4991 tls_type = TLS_TLS | TLS_TPREL;
4994 case R_PPC64_GOT_DTPREL16_DS:
4995 case R_PPC64_GOT_DTPREL16_LO_DS:
4996 case R_PPC64_GOT_DTPREL16_HI:
4997 case R_PPC64_GOT_DTPREL16_HA:
4998 tls_type = TLS_TLS | TLS_DTPREL;
5002 case R_PPC64_GOT16_DS:
5003 case R_PPC64_GOT16_HA:
5004 case R_PPC64_GOT16_HI:
5005 case R_PPC64_GOT16_LO:
5006 case R_PPC64_GOT16_LO_DS:
5009 struct got_entry *ent;
5014 ent = local_got_ents[r_symndx];
5016 for (; ent != NULL; ent = ent->next)
5017 if (ent->addend == rel->r_addend
5018 && ent->owner == abfd
5019 && ent->tls_type == tls_type)
5023 if (ent->got.refcount > 0)
5024 ent->got.refcount -= 1;
5028 case R_PPC64_PLT16_HA:
5029 case R_PPC64_PLT16_HI:
5030 case R_PPC64_PLT16_LO:
5034 case R_PPC64_REL14_BRNTAKEN:
5035 case R_PPC64_REL14_BRTAKEN:
5039 struct plt_entry *ent;
5041 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5042 if (ent->addend == rel->r_addend)
5046 if (ent->plt.refcount > 0)
5047 ent->plt.refcount -= 1;
5058 /* The maximum size of .sfpr. */
5059 #define SFPR_MAX (218*4)
5061 struct sfpr_def_parms
5063 const char name[12];
5064 unsigned char lo, hi;
5065 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5066 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5069 /* Auto-generate _save*, _rest* functions in .sfpr. */
5072 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5074 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5076 size_t len = strlen (parm->name);
5077 bfd_boolean writing = FALSE;
5080 memcpy (sym, parm->name, len);
5083 for (i = parm->lo; i <= parm->hi; i++)
5085 struct elf_link_hash_entry *h;
5087 sym[len + 0] = i / 10 + '0';
5088 sym[len + 1] = i % 10 + '0';
5089 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5091 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
5093 h->root.type = bfd_link_hash_defined;
5094 h->root.u.def.section = htab->sfpr;
5095 h->root.u.def.value = htab->sfpr->size;
5097 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
5098 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5100 if (htab->sfpr->contents == NULL)
5102 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5103 if (htab->sfpr->contents == NULL)
5109 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5111 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5113 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5114 htab->sfpr->size = p - htab->sfpr->contents;
5122 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5124 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5129 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5131 p = savegpr0 (abfd, p, r);
5132 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5134 bfd_put_32 (abfd, BLR, p);
5139 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5141 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5146 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5148 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5150 p = restgpr0 (abfd, p, r);
5151 bfd_put_32 (abfd, MTLR_R0, p);
5155 p = restgpr0 (abfd, p, 30);
5156 p = restgpr0 (abfd, p, 31);
5158 bfd_put_32 (abfd, BLR, p);
5163 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5165 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5170 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5172 p = savegpr1 (abfd, p, r);
5173 bfd_put_32 (abfd, BLR, p);
5178 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5180 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5185 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5187 p = restgpr1 (abfd, p, r);
5188 bfd_put_32 (abfd, BLR, p);
5193 savefpr (bfd *abfd, bfd_byte *p, int r)
5195 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5200 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5202 p = savefpr (abfd, p, r);
5203 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5205 bfd_put_32 (abfd, BLR, p);
5210 restfpr (bfd *abfd, bfd_byte *p, int r)
5212 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5217 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5219 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5221 p = restfpr (abfd, p, r);
5222 bfd_put_32 (abfd, MTLR_R0, p);
5226 p = restfpr (abfd, p, 30);
5227 p = restfpr (abfd, p, 31);
5229 bfd_put_32 (abfd, BLR, p);
5234 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5236 p = savefpr (abfd, p, r);
5237 bfd_put_32 (abfd, BLR, p);
5242 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5244 p = restfpr (abfd, p, r);
5245 bfd_put_32 (abfd, BLR, p);
5250 savevr (bfd *abfd, bfd_byte *p, int r)
5252 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5254 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5259 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5261 p = savevr (abfd, p, r);
5262 bfd_put_32 (abfd, BLR, p);
5267 restvr (bfd *abfd, bfd_byte *p, int r)
5269 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5271 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5276 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5278 p = restvr (abfd, p, r);
5279 bfd_put_32 (abfd, BLR, p);
5283 /* Called via elf_link_hash_traverse to transfer dynamic linking
5284 information on function code symbol entries to their corresponding
5285 function descriptor symbol entries. */
5288 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5290 struct bfd_link_info *info;
5291 struct ppc_link_hash_table *htab;
5292 struct plt_entry *ent;
5293 struct ppc_link_hash_entry *fh;
5294 struct ppc_link_hash_entry *fdh;
5295 bfd_boolean force_local;
5297 fh = (struct ppc_link_hash_entry *) h;
5298 if (fh->elf.root.type == bfd_link_hash_indirect)
5301 if (fh->elf.root.type == bfd_link_hash_warning)
5302 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5305 htab = ppc_hash_table (info);
5307 /* Resolve undefined references to dot-symbols as the value
5308 in the function descriptor, if we have one in a regular object.
5309 This is to satisfy cases like ".quad .foo". Calls to functions
5310 in dynamic objects are handled elsewhere. */
5311 if (fh->elf.root.type == bfd_link_hash_undefweak
5312 && fh->was_undefined
5313 && (fh->oh->elf.root.type == bfd_link_hash_defined
5314 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5315 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5316 && opd_entry_value (fh->oh->elf.root.u.def.section,
5317 fh->oh->elf.root.u.def.value,
5318 &fh->elf.root.u.def.section,
5319 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5321 fh->elf.root.type = fh->oh->elf.root.type;
5322 fh->elf.elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
5325 /* If this is a function code symbol, transfer dynamic linking
5326 information to the function descriptor symbol. */
5330 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5331 if (ent->plt.refcount > 0)
5334 || fh->elf.root.root.string[0] != '.'
5335 || fh->elf.root.root.string[1] == '\0')
5338 /* Find the corresponding function descriptor symbol. Create it
5339 as undefined if necessary. */
5341 fdh = get_fdh (fh, htab);
5343 while (fdh->elf.root.type == bfd_link_hash_indirect
5344 || fdh->elf.root.type == bfd_link_hash_warning)
5345 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5349 && (fh->elf.root.type == bfd_link_hash_undefined
5350 || fh->elf.root.type == bfd_link_hash_undefweak))
5354 struct bfd_link_hash_entry *bh;
5356 abfd = fh->elf.root.u.undef.abfd;
5357 newsym = bfd_make_empty_symbol (abfd);
5358 newsym->name = fh->elf.root.root.string + 1;
5359 newsym->section = bfd_und_section_ptr;
5361 newsym->flags = BSF_OBJECT;
5362 if (fh->elf.root.type == bfd_link_hash_undefweak)
5363 newsym->flags |= BSF_WEAK;
5365 bh = &fdh->elf.root;
5366 if ( !(_bfd_generic_link_add_one_symbol
5367 (info, abfd, newsym->name, newsym->flags,
5368 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
5372 fdh = (struct ppc_link_hash_entry *) bh;
5373 fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
5375 fdh->elf.type = STT_OBJECT;
5379 && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
5381 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5382 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
5383 || (fdh->elf.root.type == bfd_link_hash_undefweak
5384 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5386 if (fdh->elf.dynindx == -1)
5387 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5389 fdh->elf.elf_link_hash_flags
5390 |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
5391 | ELF_LINK_HASH_REF_DYNAMIC
5392 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
5393 | ELF_LINK_NON_GOT_REF));
5394 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5396 struct plt_entry **ep = &fdh->elf.plt.plist;
5399 *ep = fh->elf.plt.plist;
5400 fh->elf.plt.plist = NULL;
5401 fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
5403 fdh->is_func_descriptor = 1;
5408 /* Now that the info is on the function descriptor, clear the
5409 function code sym info. Any function code syms for which we
5410 don't have a definition in a regular file, we force local.
5411 This prevents a shared library from exporting syms that have
5412 been imported from another library. Function code syms that
5413 are really in the library we must leave global to prevent the
5414 linker dragging in a definition from a static library. */
5417 && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
5419 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
5420 || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0));
5421 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5426 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5427 this hook to a) provide some gcc support functions, and b) transfer
5428 dynamic linking information gathered so far on function code symbol
5429 entries, to their corresponding function descriptor symbol entries. */
5432 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5433 struct bfd_link_info *info)
5435 struct ppc_link_hash_table *htab;
5437 const struct sfpr_def_parms funcs[] =
5439 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5440 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5441 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5442 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5443 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5444 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5445 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5446 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5447 { "._savef", 14, 31, savefpr, savefpr1_tail },
5448 { "._restf", 14, 31, restfpr, restfpr1_tail },
5449 { "_savevr_", 20, 31, savevr, savevr_tail },
5450 { "_restvr_", 20, 31, restvr, restvr_tail }
5453 htab = ppc_hash_table (info);
5454 if (htab->sfpr == NULL)
5455 /* We don't have any relocs. */
5458 /* Provide any missing _save* and _rest* functions. */
5459 htab->sfpr->size = 0;
5460 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5461 if (!sfpr_define (info, &funcs[i]))
5464 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5466 if (htab->sfpr->size == 0)
5467 _bfd_strip_section_from_output (info, htab->sfpr);
5472 /* Adjust a symbol defined by a dynamic object and referenced by a
5473 regular object. The current definition is in some section of the
5474 dynamic object, but we're not including those sections. We have to
5475 change the definition to something the rest of the link can
5479 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5480 struct elf_link_hash_entry *h)
5482 struct ppc_link_hash_table *htab;
5484 unsigned int power_of_two;
5486 htab = ppc_hash_table (info);
5488 /* Deal with function syms. */
5489 if (h->type == STT_FUNC
5490 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
5492 /* Clear procedure linkage table information for any symbol that
5493 won't need a .plt entry. */
5494 struct plt_entry *ent;
5495 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5496 if (ent->plt.refcount > 0)
5499 || SYMBOL_CALLS_LOCAL (info, h)
5500 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5501 && h->root.type == bfd_link_hash_undefweak))
5503 h->plt.plist = NULL;
5504 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5508 h->plt.plist = NULL;
5510 /* If this is a weak symbol, and there is a real definition, the
5511 processor independent code will have arranged for us to see the
5512 real definition first, and we can just use the same value. */
5513 if (h->weakdef != NULL)
5515 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
5516 || h->weakdef->root.type == bfd_link_hash_defweak);
5517 h->root.u.def.section = h->weakdef->root.u.def.section;
5518 h->root.u.def.value = h->weakdef->root.u.def.value;
5519 if (ELIMINATE_COPY_RELOCS)
5520 h->elf_link_hash_flags
5521 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
5522 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
5526 /* If we are creating a shared library, we must presume that the
5527 only references to the symbol are via the global offset table.
5528 For such cases we need not do anything here; the relocations will
5529 be handled correctly by relocate_section. */
5533 /* If there are no references to this symbol that do not use the
5534 GOT, we don't need to generate a copy reloc. */
5535 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
5538 if (ELIMINATE_COPY_RELOCS)
5540 struct ppc_link_hash_entry * eh;
5541 struct ppc_dyn_relocs *p;
5543 eh = (struct ppc_link_hash_entry *) h;
5544 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5546 s = p->sec->output_section;
5547 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5551 /* If we didn't find any dynamic relocs in read-only sections, then
5552 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5555 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
5560 if (h->plt.plist != NULL)
5562 /* We should never get here, but unfortunately there are versions
5563 of gcc out there that improperly (for this ABI) put initialized
5564 function pointers, vtable refs and suchlike in read-only
5565 sections. Allow them to proceed, but warn that this might
5566 break at runtime. */
5567 (*_bfd_error_handler)
5568 (_("copy reloc against `%s' requires lazy plt linking; "
5569 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5570 h->root.root.string);
5573 /* This is a reference to a symbol defined by a dynamic object which
5574 is not a function. */
5576 /* We must allocate the symbol in our .dynbss section, which will
5577 become part of the .bss section of the executable. There will be
5578 an entry for this symbol in the .dynsym section. The dynamic
5579 object will contain position independent code, so all references
5580 from the dynamic object to this symbol will go through the global
5581 offset table. The dynamic linker will use the .dynsym entry to
5582 determine the address it must put in the global offset table, so
5583 both the dynamic object and the regular object will refer to the
5584 same memory location for the variable. */
5586 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5587 to copy the initial value out of the dynamic object and into the
5588 runtime process image. We need to remember the offset into the
5589 .rela.bss section we are going to use. */
5590 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5592 htab->relbss->size += sizeof (Elf64_External_Rela);
5593 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
5596 /* We need to figure out the alignment required for this symbol. I
5597 have no idea how ELF linkers handle this. */
5598 power_of_two = bfd_log2 (h->size);
5599 if (power_of_two > 4)
5602 /* Apply the required alignment. */
5604 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5605 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5607 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5611 /* Define the symbol as being at this point in the section. */
5612 h->root.u.def.section = s;
5613 h->root.u.def.value = s->size;
5615 /* Increment the section size to make room for the symbol. */
5621 /* If given a function descriptor symbol, hide both the function code
5622 sym and the descriptor. */
5624 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5625 struct elf_link_hash_entry *h,
5626 bfd_boolean force_local)
5628 struct ppc_link_hash_entry *eh;
5629 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5631 eh = (struct ppc_link_hash_entry *) h;
5632 if (eh->is_func_descriptor)
5634 struct ppc_link_hash_entry *fh = eh->oh;
5639 struct ppc_link_hash_table *htab;
5642 /* We aren't supposed to use alloca in BFD because on
5643 systems which do not have alloca the version in libiberty
5644 calls xmalloc, which might cause the program to crash
5645 when it runs out of memory. This function doesn't have a
5646 return status, so there's no way to gracefully return an
5647 error. So cheat. We know that string[-1] can be safely
5648 accessed; It's either a string in an ELF string table,
5649 or allocated in an objalloc structure. */
5651 p = eh->elf.root.root.string - 1;
5654 htab = ppc_hash_table (info);
5655 fh = (struct ppc_link_hash_entry *)
5656 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5659 /* Unfortunately, if it so happens that the string we were
5660 looking for was allocated immediately before this string,
5661 then we overwrote the string terminator. That's the only
5662 reason the lookup should fail. */
5665 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5666 while (q >= eh->elf.root.root.string && *q == *p)
5668 if (q < eh->elf.root.root.string && *p == '.')
5669 fh = (struct ppc_link_hash_entry *)
5670 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5679 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5684 get_sym_h (struct elf_link_hash_entry **hp,
5685 Elf_Internal_Sym **symp,
5688 Elf_Internal_Sym **locsymsp,
5689 unsigned long r_symndx,
5692 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5694 if (r_symndx >= symtab_hdr->sh_info)
5696 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5697 struct elf_link_hash_entry *h;
5699 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5700 while (h->root.type == bfd_link_hash_indirect
5701 || h->root.type == bfd_link_hash_warning)
5702 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5710 if (symsecp != NULL)
5712 asection *symsec = NULL;
5713 if (h->root.type == bfd_link_hash_defined
5714 || h->root.type == bfd_link_hash_defweak)
5715 symsec = h->root.u.def.section;
5719 if (tls_maskp != NULL)
5721 struct ppc_link_hash_entry *eh;
5723 eh = (struct ppc_link_hash_entry *) h;
5724 *tls_maskp = &eh->tls_mask;
5729 Elf_Internal_Sym *sym;
5730 Elf_Internal_Sym *locsyms = *locsymsp;
5732 if (locsyms == NULL)
5734 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5735 if (locsyms == NULL)
5736 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5737 symtab_hdr->sh_info,
5738 0, NULL, NULL, NULL);
5739 if (locsyms == NULL)
5741 *locsymsp = locsyms;
5743 sym = locsyms + r_symndx;
5751 if (symsecp != NULL)
5753 asection *symsec = NULL;
5754 if ((sym->st_shndx != SHN_UNDEF
5755 && sym->st_shndx < SHN_LORESERVE)
5756 || sym->st_shndx > SHN_HIRESERVE)
5757 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5761 if (tls_maskp != NULL)
5763 struct got_entry **lgot_ents;
5767 lgot_ents = elf_local_got_ents (ibfd);
5768 if (lgot_ents != NULL)
5770 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5771 tls_mask = &lgot_masks[r_symndx];
5773 *tls_maskp = tls_mask;
5779 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5780 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5781 type suitable for optimization, and 1 otherwise. */
5784 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5785 Elf_Internal_Sym **locsymsp,
5786 const Elf_Internal_Rela *rel, bfd *ibfd)
5788 unsigned long r_symndx;
5790 struct elf_link_hash_entry *h;
5791 Elf_Internal_Sym *sym;
5795 r_symndx = ELF64_R_SYM (rel->r_info);
5796 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5799 if ((*tls_maskp != NULL && **tls_maskp != 0)
5801 || ppc64_elf_section_data (sec)->t_symndx == NULL)
5804 /* Look inside a TOC section too. */
5807 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5808 off = h->root.u.def.value;
5811 off = sym->st_value;
5812 off += rel->r_addend;
5813 BFD_ASSERT (off % 8 == 0);
5814 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
5815 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
5816 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5818 if (toc_symndx != NULL)
5819 *toc_symndx = r_symndx;
5821 || ((h->root.type == bfd_link_hash_defined
5822 || h->root.type == bfd_link_hash_defweak)
5823 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
5824 && (next_r == -1 || next_r == -2))
5829 /* Adjust all global syms defined in opd sections. In gcc generated
5830 code for the old ABI, these will already have been done. */
5833 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5835 struct ppc_link_hash_entry *eh;
5839 if (h->root.type == bfd_link_hash_indirect)
5842 if (h->root.type == bfd_link_hash_warning)
5843 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5845 if (h->root.type != bfd_link_hash_defined
5846 && h->root.type != bfd_link_hash_defweak)
5849 eh = (struct ppc_link_hash_entry *) h;
5850 if (eh->adjust_done)
5853 sym_sec = eh->elf.root.u.def.section;
5854 opd_adjust = get_opd_info (sym_sec);
5855 if (opd_adjust != NULL)
5857 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
5860 /* This entry has been deleted. */
5861 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5864 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5865 if (elf_discarded_section (dsec))
5867 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5871 eh->elf.root.u.def.value = 0;
5872 eh->elf.root.u.def.section = dsec;
5875 eh->elf.root.u.def.value += adjust;
5876 eh->adjust_done = 1;
5881 /* Remove unused Official Procedure Descriptor entries. Currently we
5882 only remove those associated with functions in discarded link-once
5883 sections, or weakly defined functions that have been overridden. It
5884 would be possible to remove many more entries for statically linked
5888 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
5889 bfd_boolean non_overlapping)
5892 bfd_boolean some_edited = FALSE;
5893 asection *need_pad = NULL;
5895 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5898 Elf_Internal_Rela *relstart, *rel, *relend;
5899 Elf_Internal_Shdr *symtab_hdr;
5900 Elf_Internal_Sym *local_syms;
5901 struct elf_link_hash_entry **sym_hashes;
5905 bfd_boolean need_edit, add_aux_fields;
5906 bfd_size_type cnt_16b = 0;
5908 sec = bfd_get_section_by_name (ibfd, ".opd");
5912 amt = sec->size * sizeof (long) / 8;
5913 opd_adjust = get_opd_info (sec);
5914 if (opd_adjust == NULL)
5916 /* Must be a ld -r link. ie. check_relocs hasn't been
5918 opd_adjust = bfd_zalloc (obfd, amt);
5919 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
5921 memset (opd_adjust, 0, amt);
5923 if (sec->output_section == bfd_abs_section_ptr)
5926 /* Look through the section relocs. */
5927 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
5931 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5932 sym_hashes = elf_sym_hashes (ibfd);
5934 /* Read the relocations. */
5935 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5937 if (relstart == NULL)
5940 /* First run through the relocs to check they are sane, and to
5941 determine whether we need to edit this opd section. */
5945 relend = relstart + sec->reloc_count;
5946 for (rel = relstart; rel < relend; )
5948 enum elf_ppc64_reloc_type r_type;
5949 unsigned long r_symndx;
5951 struct elf_link_hash_entry *h;
5952 Elf_Internal_Sym *sym;
5954 /* .opd contains a regular array of 16 or 24 byte entries. We're
5955 only interested in the reloc pointing to a function entry
5957 if (rel->r_offset != offset
5958 || rel + 1 >= relend
5959 || (rel + 1)->r_offset != offset + 8)
5961 /* If someone messes with .opd alignment then after a
5962 "ld -r" we might have padding in the middle of .opd.
5963 Also, there's nothing to prevent someone putting
5964 something silly in .opd with the assembler. No .opd
5965 optimization for them! */
5967 (*_bfd_error_handler)
5968 (_("%B: .opd is not a regular array of opd entries"), ibfd);
5973 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
5974 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
5976 (*_bfd_error_handler)
5977 (_("%B: unexpected reloc type %u in .opd section"),
5983 r_symndx = ELF64_R_SYM (rel->r_info);
5984 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5988 if (sym_sec == NULL || sym_sec->owner == NULL)
5990 const char *sym_name;
5992 sym_name = h->root.root.string;
5994 sym_name = bfd_elf_local_sym_name (ibfd, sym);
5996 (*_bfd_error_handler)
5997 (_("%B: undefined sym `%s' in .opd section"),
6003 /* opd entries are always for functions defined in the
6004 current input bfd. If the symbol isn't defined in the
6005 input bfd, then we won't be using the function in this
6006 bfd; It must be defined in a linkonce section in another
6007 bfd, or is weak. It's also possible that we are
6008 discarding the function due to a linker script /DISCARD/,
6009 which we test for via the output_section. */
6010 if (sym_sec->owner != ibfd
6011 || sym_sec->output_section == bfd_abs_section_ptr)
6016 || (rel + 1 == relend && rel->r_offset == offset + 16))
6018 if (sec->size == offset + 24)
6023 if (rel == relend && sec->size == offset + 16)
6031 if (rel->r_offset == offset + 24)
6033 else if (rel->r_offset != offset + 16)
6035 else if (rel + 1 < relend
6036 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6037 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6042 else if (rel + 2 < relend
6043 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6044 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6053 add_aux_fields = non_overlapping && cnt_16b > 0;
6055 if (need_edit || add_aux_fields)
6057 Elf_Internal_Rela *write_rel;
6058 bfd_byte *rptr, *wptr;
6059 bfd_byte *new_contents = NULL;
6063 /* This seems a waste of time as input .opd sections are all
6064 zeros as generated by gcc, but I suppose there's no reason
6065 this will always be so. We might start putting something in
6066 the third word of .opd entries. */
6067 if ((sec->flags & SEC_IN_MEMORY) == 0)
6070 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6075 if (local_syms != NULL
6076 && symtab_hdr->contents != (unsigned char *) local_syms)
6078 if (elf_section_data (sec)->relocs != relstart)
6082 sec->contents = loc;
6083 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6086 elf_section_data (sec)->relocs = relstart;
6088 wptr = sec->contents;
6089 rptr = sec->contents;
6090 new_contents = sec->contents;
6094 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6095 if (new_contents == NULL)
6098 wptr = new_contents;
6101 write_rel = relstart;
6105 for (rel = relstart; rel < relend; rel++)
6107 unsigned long r_symndx;
6109 struct elf_link_hash_entry *h;
6110 Elf_Internal_Sym *sym;
6112 r_symndx = ELF64_R_SYM (rel->r_info);
6113 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6117 if (rel->r_offset == offset)
6119 struct ppc_link_hash_entry *fdh = NULL;
6121 /* See if the .opd entry is full 24 byte or
6122 16 byte (with fd_aux entry overlapped with next
6125 if ((rel + 2 == relend && sec->size == offset + 16)
6126 || (rel + 3 < relend
6127 && rel[2].r_offset == offset + 16
6128 && rel[3].r_offset == offset + 24
6129 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6130 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6134 && h->root.root.string[0] == '.')
6135 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6136 ppc_hash_table (info));
6138 skip = (sym_sec->owner != ibfd
6139 || sym_sec->output_section == bfd_abs_section_ptr);
6142 if (fdh != NULL && sym_sec->owner == ibfd)
6144 /* Arrange for the function descriptor sym
6146 fdh->elf.root.u.def.value = 0;
6147 fdh->elf.root.u.def.section = sym_sec;
6149 opd_adjust[rel->r_offset / 8] = -1;
6153 /* We'll be keeping this opd entry. */
6157 /* Redefine the function descriptor symbol to
6158 this location in the opd section. It is
6159 necessary to update the value here rather
6160 than using an array of adjustments as we do
6161 for local symbols, because various places
6162 in the generic ELF code use the value
6163 stored in u.def.value. */
6164 fdh->elf.root.u.def.value = wptr - new_contents;
6165 fdh->adjust_done = 1;
6168 /* Local syms are a bit tricky. We could
6169 tweak them as they can be cached, but
6170 we'd need to look through the local syms
6171 for the function descriptor sym which we
6172 don't have at the moment. So keep an
6173 array of adjustments. */
6174 opd_adjust[rel->r_offset / 8]
6175 = (wptr - new_contents) - (rptr - sec->contents);
6178 memcpy (wptr, rptr, opd_ent_size);
6179 wptr += opd_ent_size;
6180 if (add_aux_fields && opd_ent_size == 16)
6182 memset (wptr, '\0', 8);
6186 rptr += opd_ent_size;
6187 offset += opd_ent_size;
6192 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
6195 /* We won't be needing dynamic relocs here. */
6196 struct ppc_dyn_relocs **pp;
6197 struct ppc_dyn_relocs *p;
6200 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6201 else if (sym_sec != NULL)
6202 pp = ((struct ppc_dyn_relocs **)
6203 &elf_section_data (sym_sec)->local_dynrel);
6205 pp = ((struct ppc_dyn_relocs **)
6206 &elf_section_data (sec)->local_dynrel);
6207 while ((p = *pp) != NULL)
6222 /* We need to adjust any reloc offsets to point to the
6223 new opd entries. While we're at it, we may as well
6224 remove redundant relocs. */
6225 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6226 if (write_rel != rel)
6227 memcpy (write_rel, rel, sizeof (*rel));
6232 sec->size = wptr - new_contents;
6233 sec->reloc_count = write_rel - relstart;
6236 free (sec->contents);
6237 sec->contents = new_contents;
6240 /* Fudge the size too, as this is used later in
6241 elf_bfd_final_link if we are emitting relocs. */
6242 elf_section_data (sec)->rel_hdr.sh_size
6243 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6244 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6247 else if (elf_section_data (sec)->relocs != relstart)
6250 if (local_syms != NULL
6251 && symtab_hdr->contents != (unsigned char *) local_syms)
6253 if (!info->keep_memory)
6256 symtab_hdr->contents = (unsigned char *) local_syms;
6261 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6263 /* If we are doing a final link and the last .opd entry is just 16 byte
6264 long, add a 8 byte padding after it. */
6265 if (need_pad != NULL && !info->relocatable)
6269 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6271 BFD_ASSERT (need_pad->size > 0);
6273 p = bfd_malloc (need_pad->size + 8);
6277 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6278 p, 0, need_pad->size))
6281 need_pad->contents = p;
6282 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6286 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6290 need_pad->contents = p;
6293 memset (need_pad->contents + need_pad->size, 0, 8);
6294 need_pad->size += 8;
6300 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6303 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6305 struct ppc_link_hash_table *htab;
6307 htab = ppc_hash_table (info);
6308 if (htab->tls_get_addr != NULL)
6310 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6312 while (h->elf.root.type == bfd_link_hash_indirect
6313 || h->elf.root.type == bfd_link_hash_warning)
6314 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6316 htab->tls_get_addr = h;
6318 if (htab->tls_get_addr_fd == NULL
6320 && h->oh->is_func_descriptor)
6321 htab->tls_get_addr_fd = h->oh;
6324 if (htab->tls_get_addr_fd != NULL)
6326 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6328 while (h->elf.root.type == bfd_link_hash_indirect
6329 || h->elf.root.type == bfd_link_hash_warning)
6330 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6332 htab->tls_get_addr_fd = h;
6335 return _bfd_elf_tls_setup (obfd, info);
6338 /* Run through all the TLS relocs looking for optimization
6339 opportunities. The linker has been hacked (see ppc64elf.em) to do
6340 a preliminary section layout so that we know the TLS segment
6341 offsets. We can't optimize earlier because some optimizations need
6342 to know the tp offset, and we need to optimize before allocating
6343 dynamic relocations. */
6346 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6350 struct ppc_link_hash_table *htab;
6352 if (info->relocatable || info->shared)
6355 htab = ppc_hash_table (info);
6356 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6358 Elf_Internal_Sym *locsyms = NULL;
6360 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6361 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6363 Elf_Internal_Rela *relstart, *rel, *relend;
6364 int expecting_tls_get_addr;
6366 /* Read the relocations. */
6367 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6369 if (relstart == NULL)
6372 expecting_tls_get_addr = 0;
6373 relend = relstart + sec->reloc_count;
6374 for (rel = relstart; rel < relend; rel++)
6376 enum elf_ppc64_reloc_type r_type;
6377 unsigned long r_symndx;
6378 struct elf_link_hash_entry *h;
6379 Elf_Internal_Sym *sym;
6382 char tls_set, tls_clear, tls_type = 0;
6384 bfd_boolean ok_tprel, is_local;
6386 r_symndx = ELF64_R_SYM (rel->r_info);
6387 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6391 if (elf_section_data (sec)->relocs != relstart)
6394 && (elf_tdata (ibfd)->symtab_hdr.contents
6395 != (unsigned char *) locsyms))
6402 if (h->root.type != bfd_link_hash_defined
6403 && h->root.type != bfd_link_hash_defweak)
6405 value = h->root.u.def.value;
6408 /* Symbols referenced by TLS relocs must be of type
6409 STT_TLS. So no need for .opd local sym adjust. */
6410 value = sym->st_value;
6415 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
6418 value += sym_sec->output_offset;
6419 value += sym_sec->output_section->vma;
6420 value -= htab->elf.tls_sec->vma;
6421 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6422 < (bfd_vma) 1 << 32);
6425 r_type = ELF64_R_TYPE (rel->r_info);
6428 case R_PPC64_GOT_TLSLD16:
6429 case R_PPC64_GOT_TLSLD16_LO:
6430 case R_PPC64_GOT_TLSLD16_HI:
6431 case R_PPC64_GOT_TLSLD16_HA:
6432 /* These relocs should never be against a symbol
6433 defined in a shared lib. Leave them alone if
6434 that turns out to be the case. */
6435 ppc64_tlsld_got (ibfd)->refcount -= 1;
6442 tls_type = TLS_TLS | TLS_LD;
6443 expecting_tls_get_addr = 1;
6446 case R_PPC64_GOT_TLSGD16:
6447 case R_PPC64_GOT_TLSGD16_LO:
6448 case R_PPC64_GOT_TLSGD16_HI:
6449 case R_PPC64_GOT_TLSGD16_HA:
6455 tls_set = TLS_TLS | TLS_TPRELGD;
6457 tls_type = TLS_TLS | TLS_GD;
6458 expecting_tls_get_addr = 1;
6461 case R_PPC64_GOT_TPREL16_DS:
6462 case R_PPC64_GOT_TPREL16_LO_DS:
6463 case R_PPC64_GOT_TPREL16_HI:
6464 case R_PPC64_GOT_TPREL16_HA:
6465 expecting_tls_get_addr = 0;
6470 tls_clear = TLS_TPREL;
6471 tls_type = TLS_TLS | TLS_TPREL;
6478 case R_PPC64_REL14_BRTAKEN:
6479 case R_PPC64_REL14_BRNTAKEN:
6482 && (h == &htab->tls_get_addr->elf
6483 || h == &htab->tls_get_addr_fd->elf))
6485 if (!expecting_tls_get_addr
6487 && ((ELF64_R_TYPE (rel[-1].r_info)
6489 || (ELF64_R_TYPE (rel[-1].r_info)
6490 == R_PPC64_TOC16_LO)))
6492 /* Check for toc tls entries. */
6496 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6500 if (toc_tls != NULL)
6501 expecting_tls_get_addr = retval > 1;
6504 if (expecting_tls_get_addr)
6506 struct plt_entry *ent;
6507 for (ent = h->plt.plist; ent; ent = ent->next)
6508 if (ent->addend == 0)
6510 if (ent->plt.refcount > 0)
6511 ent->plt.refcount -= 1;
6516 expecting_tls_get_addr = 0;
6519 case R_PPC64_TPREL64:
6520 expecting_tls_get_addr = 0;
6524 tls_set = TLS_EXPLICIT;
6525 tls_clear = TLS_TPREL;
6531 case R_PPC64_DTPMOD64:
6532 expecting_tls_get_addr = 0;
6533 if (rel + 1 < relend
6535 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6536 && rel[1].r_offset == rel->r_offset + 8)
6540 tls_set = TLS_EXPLICIT | TLS_GD;
6543 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6552 tls_set = TLS_EXPLICIT;
6558 expecting_tls_get_addr = 0;
6562 if ((tls_set & TLS_EXPLICIT) == 0)
6564 struct got_entry *ent;
6566 /* Adjust got entry for this reloc. */
6570 ent = elf_local_got_ents (ibfd)[r_symndx];
6572 for (; ent != NULL; ent = ent->next)
6573 if (ent->addend == rel->r_addend
6574 && ent->owner == ibfd
6575 && ent->tls_type == tls_type)
6582 /* We managed to get rid of a got entry. */
6583 if (ent->got.refcount > 0)
6584 ent->got.refcount -= 1;
6589 struct ppc_link_hash_entry * eh;
6590 struct ppc_dyn_relocs **pp;
6591 struct ppc_dyn_relocs *p;
6593 /* Adjust dynamic relocs. */
6594 eh = (struct ppc_link_hash_entry *) h;
6595 for (pp = &eh->dyn_relocs;
6600 /* If we got rid of a DTPMOD/DTPREL reloc
6601 pair then we'll lose one or two dyn
6603 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6612 *tls_mask |= tls_set;
6613 *tls_mask &= ~tls_clear;
6616 if (elf_section_data (sec)->relocs != relstart)
6621 && (elf_tdata (ibfd)->symtab_hdr.contents
6622 != (unsigned char *) locsyms))
6624 if (!info->keep_memory)
6627 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6633 /* Allocate space in .plt, .got and associated reloc sections for
6637 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6639 struct bfd_link_info *info;
6640 struct ppc_link_hash_table *htab;
6642 struct ppc_link_hash_entry *eh;
6643 struct ppc_dyn_relocs *p;
6644 struct got_entry *gent;
6646 if (h->root.type == bfd_link_hash_indirect)
6649 if (h->root.type == bfd_link_hash_warning)
6650 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6652 info = (struct bfd_link_info *) inf;
6653 htab = ppc_hash_table (info);
6655 if (htab->elf.dynamic_sections_created
6657 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
6659 struct plt_entry *pent;
6660 bfd_boolean doneone = FALSE;
6661 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
6662 if (pent->plt.refcount > 0)
6664 /* If this is the first .plt entry, make room for the special
6668 s->size += PLT_INITIAL_ENTRY_SIZE;
6670 pent->plt.offset = s->size;
6672 /* Make room for this entry. */
6673 s->size += PLT_ENTRY_SIZE;
6675 /* Make room for the .glink code. */
6678 s->size += GLINK_CALL_STUB_SIZE;
6679 /* We need bigger stubs past index 32767. */
6680 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
6684 /* We also need to make an entry in the .rela.plt section. */
6686 s->size += sizeof (Elf64_External_Rela);
6690 pent->plt.offset = (bfd_vma) -1;
6693 h->plt.plist = NULL;
6694 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
6699 h->plt.plist = NULL;
6700 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
6703 eh = (struct ppc_link_hash_entry *) h;
6704 /* Run through the TLS GD got entries first if we're changing them
6706 if ((eh->tls_mask & TLS_TPRELGD) != 0)
6707 for (gent = h->got.glist; gent != NULL; gent = gent->next)
6708 if (gent->got.refcount > 0
6709 && (gent->tls_type & TLS_GD) != 0)
6711 /* This was a GD entry that has been converted to TPREL. If
6712 there happens to be a TPREL entry we can use that one. */
6713 struct got_entry *ent;
6714 for (ent = h->got.glist; ent != NULL; ent = ent->next)
6715 if (ent->got.refcount > 0
6716 && (ent->tls_type & TLS_TPREL) != 0
6717 && ent->addend == gent->addend
6718 && ent->owner == gent->owner)
6720 gent->got.refcount = 0;
6724 /* If not, then we'll be using our own TPREL entry. */
6725 if (gent->got.refcount != 0)
6726 gent->tls_type = TLS_TLS | TLS_TPREL;
6729 for (gent = h->got.glist; gent != NULL; gent = gent->next)
6730 if (gent->got.refcount > 0)
6734 /* Make sure this symbol is output as a dynamic symbol.
6735 Undefined weak syms won't yet be marked as dynamic,
6736 nor will all TLS symbols. */
6737 if (h->dynindx == -1
6738 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
6740 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6744 if ((gent->tls_type & TLS_LD) != 0
6745 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
6747 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
6751 s = ppc64_elf_tdata (gent->owner)->got;
6752 gent->got.offset = s->size;
6754 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
6755 dyn = htab->elf.dynamic_sections_created;
6757 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
6758 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6759 || h->root.type != bfd_link_hash_undefweak))
6760 ppc64_elf_tdata (gent->owner)->relgot->size
6761 += (gent->tls_type & eh->tls_mask & TLS_GD
6762 ? 2 * sizeof (Elf64_External_Rela)
6763 : sizeof (Elf64_External_Rela));
6766 gent->got.offset = (bfd_vma) -1;
6768 if (eh->dyn_relocs == NULL)
6771 /* In the shared -Bsymbolic case, discard space allocated for
6772 dynamic pc-relative relocs against symbols which turn out to be
6773 defined in regular objects. For the normal shared case, discard
6774 space for relocs that have become local due to symbol visibility
6779 /* Relocs that use pc_count are those that appear on a call insn,
6780 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
6781 generated via assembly. We want calls to protected symbols to
6782 resolve directly to the function rather than going via the plt.
6783 If people want function pointer comparisons to work as expected
6784 then they should avoid writing weird assembly. */
6785 if (SYMBOL_CALLS_LOCAL (info, h))
6787 struct ppc_dyn_relocs **pp;
6789 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6791 p->count -= p->pc_count;
6800 /* Also discard relocs on undefined weak syms with non-default
6802 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6803 && h->root.type == bfd_link_hash_undefweak)
6804 eh->dyn_relocs = NULL;
6806 else if (ELIMINATE_COPY_RELOCS)
6808 /* For the non-shared case, discard space for relocs against
6809 symbols which turn out to need copy relocs or are not
6812 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
6813 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
6814 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
6816 /* Make sure this symbol is output as a dynamic symbol.
6817 Undefined weak syms won't yet be marked as dynamic. */
6818 if (h->dynindx == -1
6819 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
6821 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6825 /* If that succeeded, we know we'll be keeping all the
6827 if (h->dynindx != -1)
6831 eh->dyn_relocs = NULL;
6836 /* Finally, allocate space. */
6837 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6839 asection *sreloc = elf_section_data (p->sec)->sreloc;
6840 sreloc->size += p->count * sizeof (Elf64_External_Rela);
6846 /* Find any dynamic relocs that apply to read-only sections. */
6849 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6851 struct ppc_link_hash_entry *eh;
6852 struct ppc_dyn_relocs *p;
6854 if (h->root.type == bfd_link_hash_warning)
6855 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6857 eh = (struct ppc_link_hash_entry *) h;
6858 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6860 asection *s = p->sec->output_section;
6862 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6864 struct bfd_link_info *info = inf;
6866 info->flags |= DF_TEXTREL;
6868 /* Not an error, just cut short the traversal. */
6875 /* Set the sizes of the dynamic sections. */
6878 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6879 struct bfd_link_info *info)
6881 struct ppc_link_hash_table *htab;
6887 htab = ppc_hash_table (info);
6888 dynobj = htab->elf.dynobj;
6892 if (htab->elf.dynamic_sections_created)
6894 /* Set the contents of the .interp section to the interpreter. */
6895 if (info->executable)
6897 s = bfd_get_section_by_name (dynobj, ".interp");
6900 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6901 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6905 /* Set up .got offsets for local syms, and space for local dynamic
6907 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6909 struct got_entry **lgot_ents;
6910 struct got_entry **end_lgot_ents;
6912 bfd_size_type locsymcount;
6913 Elf_Internal_Shdr *symtab_hdr;
6916 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
6919 if (ppc64_tlsld_got (ibfd)->refcount > 0)
6921 s = ppc64_elf_tdata (ibfd)->got;
6922 ppc64_tlsld_got (ibfd)->offset = s->size;
6926 srel = ppc64_elf_tdata (ibfd)->relgot;
6927 srel->size += sizeof (Elf64_External_Rela);
6931 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
6933 for (s = ibfd->sections; s != NULL; s = s->next)
6935 struct ppc_dyn_relocs *p;
6937 for (p = *((struct ppc_dyn_relocs **)
6938 &elf_section_data (s)->local_dynrel);
6942 if (!bfd_is_abs_section (p->sec)
6943 && bfd_is_abs_section (p->sec->output_section))
6945 /* Input section has been discarded, either because
6946 it is a copy of a linkonce section or due to
6947 linker script /DISCARD/, so we'll be discarding
6950 else if (p->count != 0)
6952 srel = elf_section_data (p->sec)->sreloc;
6953 srel->size += p->count * sizeof (Elf64_External_Rela);
6954 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
6955 info->flags |= DF_TEXTREL;
6960 lgot_ents = elf_local_got_ents (ibfd);
6964 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6965 locsymcount = symtab_hdr->sh_info;
6966 end_lgot_ents = lgot_ents + locsymcount;
6967 lgot_masks = (char *) end_lgot_ents;
6968 s = ppc64_elf_tdata (ibfd)->got;
6969 srel = ppc64_elf_tdata (ibfd)->relgot;
6970 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
6972 struct got_entry *ent;
6974 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
6975 if (ent->got.refcount > 0)
6977 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
6979 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
6981 ppc64_tlsld_got (ibfd)->offset = s->size;
6984 srel->size += sizeof (Elf64_External_Rela);
6986 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
6990 ent->got.offset = s->size;
6991 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
6995 srel->size += 2 * sizeof (Elf64_External_Rela);
7001 srel->size += sizeof (Elf64_External_Rela);
7006 ent->got.offset = (bfd_vma) -1;
7010 /* Allocate global sym .plt and .got entries, and space for global
7011 sym dynamic relocs. */
7012 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
7014 /* We now have determined the sizes of the various dynamic sections.
7015 Allocate memory for them. */
7017 for (s = dynobj->sections; s != NULL; s = s->next)
7019 if ((s->flags & SEC_LINKER_CREATED) == 0)
7022 if (s == htab->brlt || s == htab->relbrlt)
7023 /* These haven't been allocated yet; don't strip. */
7025 else if (s == htab->got
7027 || s == htab->glink)
7029 /* Strip this section if we don't need it; see the
7032 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
7036 /* If we don't need this section, strip it from the
7037 output file. This is mostly to handle .rela.bss and
7038 .rela.plt. We must create both sections in
7039 create_dynamic_sections, because they must be created
7040 before the linker maps input sections to output
7041 sections. The linker does that before
7042 adjust_dynamic_symbol is called, and it is that
7043 function which decides whether anything needs to go
7044 into these sections. */
7048 if (s != htab->relplt)
7051 /* We use the reloc_count field as a counter if we need
7052 to copy relocs into the output file. */
7058 /* It's not one of our sections, so don't allocate space. */
7064 _bfd_strip_section_from_output (info, s);
7068 /* .plt is in the bss section. We don't initialise it. */
7072 /* Allocate memory for the section contents. We use bfd_zalloc
7073 here in case unused entries are not reclaimed before the
7074 section's contents are written out. This should not happen,
7075 but this way if it does we get a R_PPC64_NONE reloc in .rela
7076 sections instead of garbage.
7077 We also rely on the section contents being zero when writing
7079 s->contents = bfd_zalloc (dynobj, s->size);
7080 if (s->contents == NULL)
7084 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7086 s = ppc64_elf_tdata (ibfd)->got;
7087 if (s != NULL && s != htab->got)
7090 _bfd_strip_section_from_output (info, s);
7093 s->contents = bfd_zalloc (ibfd, s->size);
7094 if (s->contents == NULL)
7098 s = ppc64_elf_tdata (ibfd)->relgot;
7102 _bfd_strip_section_from_output (info, s);
7105 s->contents = bfd_zalloc (ibfd, s->size);
7106 if (s->contents == NULL)
7114 if (htab->elf.dynamic_sections_created)
7116 /* Add some entries to the .dynamic section. We fill in the
7117 values later, in ppc64_elf_finish_dynamic_sections, but we
7118 must add the entries now so that we get the correct size for
7119 the .dynamic section. The DT_DEBUG entry is filled in by the
7120 dynamic linker and used by the debugger. */
7121 #define add_dynamic_entry(TAG, VAL) \
7122 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7124 if (info->executable)
7126 if (!add_dynamic_entry (DT_DEBUG, 0))
7130 if (htab->plt != NULL && htab->plt->size != 0)
7132 if (!add_dynamic_entry (DT_PLTGOT, 0)
7133 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7134 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
7135 || !add_dynamic_entry (DT_JMPREL, 0)
7136 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
7142 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7143 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
7149 if (!add_dynamic_entry (DT_RELA, 0)
7150 || !add_dynamic_entry (DT_RELASZ, 0)
7151 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
7154 /* If any dynamic relocs apply to a read-only section,
7155 then we need a DT_TEXTREL entry. */
7156 if ((info->flags & DF_TEXTREL) == 0)
7157 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
7159 if ((info->flags & DF_TEXTREL) != 0)
7161 if (!add_dynamic_entry (DT_TEXTREL, 0))
7166 #undef add_dynamic_entry
7171 /* Determine the type of stub needed, if any, for a call. */
7173 static inline enum ppc_stub_type
7174 ppc_type_of_stub (asection *input_sec,
7175 const Elf_Internal_Rela *rel,
7176 struct ppc_link_hash_entry **hash,
7177 bfd_vma destination)
7179 struct ppc_link_hash_entry *h = *hash;
7181 bfd_vma branch_offset;
7182 bfd_vma max_branch_offset;
7183 enum elf_ppc64_reloc_type r_type;
7188 && h->oh->is_func_descriptor)
7191 if (h->elf.dynindx != -1)
7193 struct plt_entry *ent;
7195 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
7196 if (ent->addend == rel->r_addend
7197 && ent->plt.offset != (bfd_vma) -1)
7200 return ppc_stub_plt_call;
7204 if (!(h->elf.root.type == bfd_link_hash_defined
7205 || h->elf.root.type == bfd_link_hash_defweak)
7206 || h->elf.root.u.def.section->output_section == NULL)
7207 return ppc_stub_none;
7210 /* Determine where the call point is. */
7211 location = (input_sec->output_offset
7212 + input_sec->output_section->vma
7215 branch_offset = destination - location;
7216 r_type = ELF64_R_TYPE (rel->r_info);
7218 /* Determine if a long branch stub is needed. */
7219 max_branch_offset = 1 << 25;
7220 if (r_type != R_PPC64_REL24)
7221 max_branch_offset = 1 << 15;
7223 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7224 /* We need a stub. Figure out whether a long_branch or plt_branch
7226 return ppc_stub_long_branch;
7228 return ppc_stub_none;
7231 /* Build a .plt call stub. */
7233 static inline bfd_byte *
7234 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
7236 #define PPC_LO(v) ((v) & 0xffff)
7237 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7238 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7240 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
7241 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
7242 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7243 if (PPC_HA (offset + 8) != PPC_HA (offset))
7244 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7246 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7247 if (PPC_HA (offset + 8) != PPC_HA (offset))
7248 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7250 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7251 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7252 bfd_put_32 (obfd, BCTR, p), p += 4;
7257 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7259 struct ppc_stub_hash_entry *stub_entry;
7260 struct ppc_branch_hash_entry *br_entry;
7261 struct bfd_link_info *info;
7262 struct ppc_link_hash_table *htab;
7266 struct plt_entry *ent;
7270 /* Massage our args to the form they really have. */
7271 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7274 htab = ppc_hash_table (info);
7276 /* Make a note of the offset within the stubs for this entry. */
7277 stub_entry->stub_offset = stub_entry->stub_sec->size;
7278 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
7280 htab->stub_count[stub_entry->stub_type - 1] += 1;
7281 switch (stub_entry->stub_type)
7283 case ppc_stub_long_branch:
7284 case ppc_stub_long_branch_r2off:
7285 /* Branches are relative. This is where we are going to. */
7286 off = (stub_entry->target_value
7287 + stub_entry->target_section->output_offset
7288 + stub_entry->target_section->output_section->vma);
7290 /* And this is where we are coming from. */
7291 off -= (stub_entry->stub_offset
7292 + stub_entry->stub_sec->output_offset
7293 + stub_entry->stub_sec->output_section->vma);
7295 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7301 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7302 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7303 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7305 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7307 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7312 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
7314 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
7317 case ppc_stub_plt_branch:
7318 case ppc_stub_plt_branch_r2off:
7319 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7320 stub_entry->root.string + 9,
7322 if (br_entry == NULL)
7324 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
7325 stub_entry->root.string + 9);
7326 htab->stub_error = TRUE;
7330 off = (stub_entry->target_value
7331 + stub_entry->target_section->output_offset
7332 + stub_entry->target_section->output_section->vma);
7334 bfd_put_64 (htab->brlt->owner, off,
7335 htab->brlt->contents + br_entry->offset);
7339 /* Create a reloc for the branch lookup table entry. */
7340 Elf_Internal_Rela rela;
7343 rela.r_offset = (br_entry->offset
7344 + htab->brlt->output_offset
7345 + htab->brlt->output_section->vma);
7346 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7347 rela.r_addend = off;
7349 rl = htab->relbrlt->contents;
7350 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
7351 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
7354 off = (br_entry->offset
7355 + htab->brlt->output_offset
7356 + htab->brlt->output_section->vma
7357 - elf_gp (htab->brlt->output_section->owner)
7358 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7360 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
7362 (*_bfd_error_handler)
7363 (_("linkage table error against `%s'"),
7364 stub_entry->root.string);
7365 bfd_set_error (bfd_error_bad_value);
7366 htab->stub_error = TRUE;
7371 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
7373 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7375 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7382 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7383 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7384 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7386 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
7388 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
7390 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7392 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7396 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
7398 bfd_put_32 (htab->stub_bfd, BCTR, loc);
7401 case ppc_stub_plt_call:
7402 /* Do the best we can for shared libraries built without
7403 exporting ".foo" for each "foo". This can happen when symbol
7404 versioning scripts strip all bar a subset of symbols. */
7405 if (stub_entry->h->oh != NULL
7406 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
7407 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
7409 /* Point the symbol at the stub. There may be multiple stubs,
7410 we don't really care; The main thing is to make this sym
7411 defined somewhere. Maybe defining the symbol in the stub
7412 section is a silly idea. If we didn't do this, htab->top_id
7414 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
7415 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
7416 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
7419 /* Now build the stub. */
7421 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
7422 if (ent->addend == stub_entry->addend)
7424 off = ent->plt.offset;
7427 if (off >= (bfd_vma) -2)
7430 off &= ~ (bfd_vma) 1;
7431 off += (htab->plt->output_offset
7432 + htab->plt->output_section->vma
7433 - elf_gp (htab->plt->output_section->owner)
7434 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7436 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
7438 (*_bfd_error_handler)
7439 (_("linkage table error against `%s'"),
7440 stub_entry->h->elf.root.root.string);
7441 bfd_set_error (bfd_error_bad_value);
7442 htab->stub_error = TRUE;
7446 p = build_plt_stub (htab->stub_bfd, loc, off);
7455 stub_entry->stub_sec->size += size;
7457 if (htab->emit_stub_syms
7458 && !(stub_entry->stub_type == ppc_stub_plt_call
7459 && stub_entry->h->oh != NULL
7460 && stub_entry->h->oh->elf.root.type == bfd_link_hash_defined
7461 && stub_entry->h->oh->elf.root.u.def.section == stub_entry->stub_sec
7462 && stub_entry->h->oh->elf.root.u.def.value == stub_entry->stub_offset))
7464 struct elf_link_hash_entry *h;
7465 h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string,
7466 TRUE, FALSE, FALSE);
7469 if (h->root.type == bfd_link_hash_new)
7471 h->root.type = bfd_link_hash_defined;
7472 h->root.u.def.section = stub_entry->stub_sec;
7473 h->root.u.def.value = stub_entry->stub_offset;
7474 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
7475 | ELF_LINK_HASH_DEF_REGULAR
7476 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7477 | ELF_LINK_FORCED_LOCAL);
7484 /* As above, but don't actually build the stub. Just bump offset so
7485 we know stub section sizes, and select plt_branch stubs where
7486 long_branch stubs won't do. */
7489 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7491 struct ppc_stub_hash_entry *stub_entry;
7492 struct bfd_link_info *info;
7493 struct ppc_link_hash_table *htab;
7497 /* Massage our args to the form they really have. */
7498 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7501 htab = ppc_hash_table (info);
7503 if (stub_entry->stub_type == ppc_stub_plt_call)
7505 struct plt_entry *ent;
7507 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
7508 if (ent->addend == stub_entry->addend)
7510 off = ent->plt.offset & ~(bfd_vma) 1;
7513 if (off >= (bfd_vma) -2)
7515 off += (htab->plt->output_offset
7516 + htab->plt->output_section->vma
7517 - elf_gp (htab->plt->output_section->owner)
7518 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7520 size = PLT_CALL_STUB_SIZE;
7521 if (PPC_HA (off + 16) != PPC_HA (off))
7526 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
7528 off = (stub_entry->target_value
7529 + stub_entry->target_section->output_offset
7530 + stub_entry->target_section->output_section->vma);
7531 off -= (stub_entry->stub_sec->size
7532 + stub_entry->stub_sec->output_offset
7533 + stub_entry->stub_sec->output_section->vma);
7535 /* Reset the stub type from the plt variant in case we now
7536 can reach with a shorter stub. */
7537 if (stub_entry->stub_type >= ppc_stub_plt_branch)
7538 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
7541 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
7547 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
7548 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
7550 struct ppc_branch_hash_entry *br_entry;
7552 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
7553 stub_entry->root.string + 9,
7555 if (br_entry == NULL)
7557 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
7558 stub_entry->root.string + 9);
7559 htab->stub_error = TRUE;
7563 if (br_entry->iter != htab->stub_iteration)
7565 br_entry->iter = htab->stub_iteration;
7566 br_entry->offset = htab->brlt->size;
7567 htab->brlt->size += 8;
7570 htab->relbrlt->size += sizeof (Elf64_External_Rela);
7573 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
7575 if (stub_entry->stub_type != ppc_stub_plt_branch)
7580 stub_entry->stub_sec->size += size;
7584 /* Set up various things so that we can make a list of input sections
7585 for each output section included in the link. Returns -1 on error,
7586 0 when no stubs will be needed, and 1 on success. */
7589 ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
7592 int top_id, top_index, id;
7594 asection **input_list;
7596 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7598 if (htab->brlt == NULL)
7601 /* Find the top input section id. */
7602 for (input_bfd = info->input_bfds, top_id = 3;
7604 input_bfd = input_bfd->link_next)
7606 for (section = input_bfd->sections;
7608 section = section->next)
7610 if (top_id < section->id)
7611 top_id = section->id;
7615 htab->top_id = top_id;
7616 amt = sizeof (struct map_stub) * (top_id + 1);
7617 htab->stub_group = bfd_zmalloc (amt);
7618 if (htab->stub_group == NULL)
7621 /* Set toc_off for com, und, abs and ind sections. */
7622 for (id = 0; id < 3; id++)
7623 htab->stub_group[id].toc_off = TOC_BASE_OFF;
7625 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
7627 /* We can't use output_bfd->section_count here to find the top output
7628 section index as some sections may have been removed, and
7629 _bfd_strip_section_from_output doesn't renumber the indices. */
7630 for (section = output_bfd->sections, top_index = 0;
7632 section = section->next)
7634 if (top_index < section->index)
7635 top_index = section->index;
7638 htab->top_index = top_index;
7639 amt = sizeof (asection *) * (top_index + 1);
7640 input_list = bfd_zmalloc (amt);
7641 htab->input_list = input_list;
7642 if (input_list == NULL)
7648 /* The linker repeatedly calls this function for each TOC input section
7649 and linker generated GOT section. Group input bfds such that the toc
7650 within a group is less than 64k in size. Will break with cute linker
7651 scripts that play games with dot in the output toc section. */
7654 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
7656 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7657 bfd_vma addr = isec->output_offset + isec->output_section->vma;
7658 bfd_vma off = addr - htab->toc_curr;
7660 if (off + isec->size > 0x10000)
7661 htab->toc_curr = addr;
7663 elf_gp (isec->owner) = (htab->toc_curr
7664 - elf_gp (isec->output_section->owner)
7668 /* Called after the last call to the above function. */
7671 ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
7672 struct bfd_link_info *info)
7674 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7676 /* toc_curr tracks the TOC offset used for code sections below in
7677 ppc64_elf_next_input_section. Start off at 0x8000. */
7678 htab->toc_curr = TOC_BASE_OFF;
7681 /* No toc references were found in ISEC. If the code in ISEC makes no
7682 calls, then there's no need to use toc adjusting stubs when branching
7683 into ISEC. Actually, indirect calls from ISEC are OK as they will
7687 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
7694 /* We know none of our code bearing sections will need toc stubs. */
7695 if ((isec->flags & SEC_LINKER_CREATED) != 0)
7698 if (isec->size == 0)
7701 /* Hack for linux kernel. .fixup contains branches, but only back to
7702 the function that hit an exception. */
7703 branch_ok = strcmp (isec->name, ".fixup") == 0;
7705 contents = elf_section_data (isec)->this_hdr.contents;
7706 if (contents == NULL)
7708 if (!bfd_malloc_and_get_section (isec->owner, isec, &contents))
7710 if (contents != NULL)
7714 if (info->keep_memory)
7715 elf_section_data (isec)->this_hdr.contents = contents;
7718 /* Code scan, because we don't necessarily have relocs on calls to
7719 static functions. */
7721 for (i = 0; i < isec->size; i += 4)
7723 unsigned long insn = bfd_get_32 (isec->owner, contents + i);
7724 /* Is this a branch? */
7725 if ((insn & (0x3f << 26)) == (18 << 26)
7726 /* If branch and link, it's a function call. */
7728 /* Sibling calls use a plain branch. I don't know a way
7729 of deciding whether a branch is really a sibling call. */
7737 if (elf_section_data (isec)->this_hdr.contents != contents)
7742 /* The linker repeatedly calls this function for each input section,
7743 in the order that input sections are linked into output sections.
7744 Build lists of input sections to determine groupings between which
7745 we may insert linker stubs. */
7748 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
7750 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7753 if ((isec->output_section->flags & SEC_CODE) != 0
7754 && isec->output_section->index <= htab->top_index)
7756 asection **list = htab->input_list + isec->output_section->index;
7757 /* Steal the link_sec pointer for our list. */
7758 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
7759 /* This happens to make the list in reverse order,
7760 which is what we want. */
7761 PREV_SEC (isec) = *list;
7765 /* If a code section has a function that uses the TOC then we need
7766 to use the right TOC (obviously). Also, make sure that .opd gets
7767 the correct TOC value for R_PPC64_TOC relocs that don't have or
7768 can't find their function symbol (shouldn't ever happen now). */
7769 if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
7771 if (elf_gp (isec->owner) != 0)
7772 htab->toc_curr = elf_gp (isec->owner);
7774 else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
7777 isec->has_gp_reloc = ret;
7779 /* Functions that don't use the TOC can belong in any TOC group.
7780 Use the last TOC base. This happens to make _init and _fini
7782 htab->stub_group[isec->id].toc_off = htab->toc_curr;
7786 /* See whether we can group stub sections together. Grouping stub
7787 sections may result in fewer stubs. More importantly, we need to
7788 put all .init* and .fini* stubs at the beginning of the .init or
7789 .fini output sections respectively, because glibc splits the
7790 _init and _fini functions into multiple parts. Putting a stub in
7791 the middle of a function is not a good idea. */
7794 group_sections (struct ppc_link_hash_table *htab,
7795 bfd_size_type stub_group_size,
7796 bfd_boolean stubs_always_before_branch)
7798 asection **list = htab->input_list + htab->top_index;
7801 asection *tail = *list;
7802 while (tail != NULL)
7806 bfd_size_type total;
7807 bfd_boolean big_sec;
7812 big_sec = total >= stub_group_size;
7813 curr_toc = htab->stub_group[tail->id].toc_off;
7815 while ((prev = PREV_SEC (curr)) != NULL
7816 && ((total += curr->output_offset - prev->output_offset)
7818 && htab->stub_group[prev->id].toc_off == curr_toc)
7821 /* OK, the size from the start of CURR to the end is less
7822 than stub_group_size and thus can be handled by one stub
7823 section. (or the tail section is itself larger than
7824 stub_group_size, in which case we may be toast.) We
7825 should really be keeping track of the total size of stubs
7826 added here, as stubs contribute to the final output
7827 section size. That's a little tricky, and this way will
7828 only break if stubs added make the total size more than
7829 2^25, ie. for the default stub_group_size, if stubs total
7830 more than 2097152 bytes, or nearly 75000 plt call stubs. */
7833 prev = PREV_SEC (tail);
7834 /* Set up this stub group. */
7835 htab->stub_group[tail->id].link_sec = curr;
7837 while (tail != curr && (tail = prev) != NULL);
7839 /* But wait, there's more! Input sections up to stub_group_size
7840 bytes before the stub section can be handled by it too.
7841 Don't do this if we have a really large section after the
7842 stubs, as adding more stubs increases the chance that
7843 branches may not reach into the stub section. */
7844 if (!stubs_always_before_branch && !big_sec)
7848 && ((total += tail->output_offset - prev->output_offset)
7850 && htab->stub_group[prev->id].toc_off == curr_toc)
7853 prev = PREV_SEC (tail);
7854 htab->stub_group[tail->id].link_sec = curr;
7860 while (list-- != htab->input_list);
7861 free (htab->input_list);
7865 /* Determine and set the size of the stub section for a final link.
7867 The basic idea here is to examine all the relocations looking for
7868 PC-relative calls to a target that is unreachable with a "bl"
7872 ppc64_elf_size_stubs (bfd *output_bfd,
7873 struct bfd_link_info *info,
7874 bfd_signed_vma group_size,
7875 asection *(*add_stub_section) (const char *, asection *),
7876 void (*layout_sections_again) (void))
7878 bfd_size_type stub_group_size;
7879 bfd_boolean stubs_always_before_branch;
7880 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7882 /* Stash our params away. */
7883 htab->add_stub_section = add_stub_section;
7884 htab->layout_sections_again = layout_sections_again;
7885 stubs_always_before_branch = group_size < 0;
7887 stub_group_size = -group_size;
7889 stub_group_size = group_size;
7890 if (stub_group_size == 1)
7892 /* Default values. */
7893 if (stubs_always_before_branch)
7895 stub_group_size = 0x1e00000;
7896 if (htab->has_14bit_branch)
7897 stub_group_size = 0x7800;
7901 stub_group_size = 0x1c00000;
7902 if (htab->has_14bit_branch)
7903 stub_group_size = 0x7000;
7907 group_sections (htab, stub_group_size, stubs_always_before_branch);
7912 unsigned int bfd_indx;
7914 bfd_boolean stub_changed;
7916 htab->stub_iteration += 1;
7917 stub_changed = FALSE;
7919 for (input_bfd = info->input_bfds, bfd_indx = 0;
7921 input_bfd = input_bfd->link_next, bfd_indx++)
7923 Elf_Internal_Shdr *symtab_hdr;
7925 Elf_Internal_Sym *local_syms = NULL;
7927 /* We'll need the symbol table in a second. */
7928 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
7929 if (symtab_hdr->sh_info == 0)
7932 /* Walk over each section attached to the input bfd. */
7933 for (section = input_bfd->sections;
7935 section = section->next)
7937 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
7939 /* If there aren't any relocs, then there's nothing more
7941 if ((section->flags & SEC_RELOC) == 0
7942 || section->reloc_count == 0)
7945 /* If this section is a link-once section that will be
7946 discarded, then don't create any stubs. */
7947 if (section->output_section == NULL
7948 || section->output_section->owner != output_bfd)
7951 /* Get the relocs. */
7953 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
7955 if (internal_relocs == NULL)
7956 goto error_ret_free_local;
7958 /* Now examine each relocation. */
7959 irela = internal_relocs;
7960 irelaend = irela + section->reloc_count;
7961 for (; irela < irelaend; irela++)
7963 enum elf_ppc64_reloc_type r_type;
7964 unsigned int r_indx;
7965 enum ppc_stub_type stub_type;
7966 struct ppc_stub_hash_entry *stub_entry;
7967 asection *sym_sec, *code_sec;
7969 bfd_vma destination;
7970 bfd_boolean ok_dest;
7971 struct ppc_link_hash_entry *hash;
7972 struct ppc_link_hash_entry *fdh;
7973 struct elf_link_hash_entry *h;
7974 Elf_Internal_Sym *sym;
7976 const asection *id_sec;
7979 r_type = ELF64_R_TYPE (irela->r_info);
7980 r_indx = ELF64_R_SYM (irela->r_info);
7982 if (r_type >= R_PPC64_max)
7984 bfd_set_error (bfd_error_bad_value);
7985 goto error_ret_free_internal;
7988 /* Only look for stubs on branch instructions. */
7989 if (r_type != R_PPC64_REL24
7990 && r_type != R_PPC64_REL14
7991 && r_type != R_PPC64_REL14_BRTAKEN
7992 && r_type != R_PPC64_REL14_BRNTAKEN)
7995 /* Now determine the call target, its name, value,
7997 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7999 goto error_ret_free_internal;
8000 hash = (struct ppc_link_hash_entry *) h;
8006 sym_value = sym->st_value;
8012 /* Recognise an old ABI func code entry sym, and
8013 use the func descriptor sym instead. */
8014 if (hash->elf.root.type == bfd_link_hash_undefweak
8015 && hash->elf.root.root.string[0] == '.'
8016 && (fdh = get_fdh (hash, htab)) != NULL)
8018 if (fdh->elf.root.type == bfd_link_hash_defined
8019 || fdh->elf.root.type == bfd_link_hash_defweak)
8021 sym_sec = fdh->elf.root.u.def.section;
8022 sym_value = fdh->elf.root.u.def.value;
8023 if (sym_sec->output_section != NULL)
8029 else if (hash->elf.root.type == bfd_link_hash_defined
8030 || hash->elf.root.type == bfd_link_hash_defweak)
8032 sym_value = hash->elf.root.u.def.value;
8033 if (sym_sec->output_section != NULL)
8036 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8038 else if (hash->elf.root.type == bfd_link_hash_undefined)
8042 bfd_set_error (bfd_error_bad_value);
8043 goto error_ret_free_internal;
8050 sym_value += irela->r_addend;
8051 destination = (sym_value
8052 + sym_sec->output_offset
8053 + sym_sec->output_section->vma);
8057 opd_adjust = get_opd_info (sym_sec);
8058 if (opd_adjust != NULL)
8064 long adjust = opd_adjust[sym_value / 8];
8067 sym_value += adjust;
8069 dest = opd_entry_value (sym_sec, sym_value,
8070 &code_sec, &sym_value);
8071 if (dest != (bfd_vma) -1)
8076 /* Fixup old ABI sym to point at code
8078 hash->elf.root.type = bfd_link_hash_defweak;
8079 hash->elf.root.u.def.section = code_sec;
8080 hash->elf.root.u.def.value = sym_value;
8085 /* Determine what (if any) linker stub is needed. */
8086 stub_type = ppc_type_of_stub (section, irela, &hash,
8089 if (stub_type != ppc_stub_plt_call)
8091 /* Check whether we need a TOC adjusting stub.
8092 Since the linker pastes together pieces from
8093 different object files when creating the
8094 _init and _fini functions, it may be that a
8095 call to what looks like a local sym is in
8096 fact a call needing a TOC adjustment. */
8097 if (code_sec != NULL
8098 && code_sec->output_section != NULL
8099 && (htab->stub_group[code_sec->id].toc_off
8100 != htab->stub_group[section->id].toc_off)
8101 && code_sec->has_gp_reloc
8102 && section->has_gp_reloc)
8103 stub_type = ppc_stub_long_branch_r2off;
8106 if (stub_type == ppc_stub_none)
8109 /* __tls_get_addr calls might be eliminated. */
8110 if (stub_type != ppc_stub_plt_call
8112 && (hash == htab->tls_get_addr
8113 || hash == htab->tls_get_addr_fd)
8114 && section->has_tls_reloc
8115 && irela != internal_relocs)
8120 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
8121 irela - 1, input_bfd))
8122 goto error_ret_free_internal;
8127 /* Support for grouping stub sections. */
8128 id_sec = htab->stub_group[section->id].link_sec;
8130 /* Get the name of this stub. */
8131 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
8133 goto error_ret_free_internal;
8135 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
8136 stub_name, FALSE, FALSE);
8137 if (stub_entry != NULL)
8139 /* The proper stub has already been created. */
8144 stub_entry = ppc_add_stub (stub_name, section, htab);
8145 if (stub_entry == NULL)
8148 error_ret_free_internal:
8149 if (elf_section_data (section)->relocs == NULL)
8150 free (internal_relocs);
8151 error_ret_free_local:
8152 if (local_syms != NULL
8153 && (symtab_hdr->contents
8154 != (unsigned char *) local_syms))
8159 stub_entry->stub_type = stub_type;
8160 stub_entry->target_value = sym_value;
8161 stub_entry->target_section = code_sec;
8162 stub_entry->h = hash;
8163 stub_entry->addend = irela->r_addend;
8164 stub_changed = TRUE;
8167 /* We're done with the internal relocs, free them. */
8168 if (elf_section_data (section)->relocs != internal_relocs)
8169 free (internal_relocs);
8172 if (local_syms != NULL
8173 && symtab_hdr->contents != (unsigned char *) local_syms)
8175 if (!info->keep_memory)
8178 symtab_hdr->contents = (unsigned char *) local_syms;
8185 /* OK, we've added some stubs. Find out the new size of the
8187 for (stub_sec = htab->stub_bfd->sections;
8189 stub_sec = stub_sec->next)
8190 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
8193 htab->brlt->size = 0;
8195 htab->relbrlt->size = 0;
8197 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
8199 /* Ask the linker to do its stuff. */
8200 (*htab->layout_sections_again) ();
8203 /* It would be nice to strip .branch_lt from the output if the
8204 section is empty, but it's too late. If we strip sections here,
8205 the dynamic symbol table is corrupted since the section symbol
8206 for the stripped section isn't written. */
8211 /* Called after we have determined section placement. If sections
8212 move, we'll be called again. Provide a value for TOCstart. */
8215 ppc64_elf_toc (bfd *obfd)
8220 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
8221 order. The TOC starts where the first of these sections starts. */
8222 s = bfd_get_section_by_name (obfd, ".got");
8224 s = bfd_get_section_by_name (obfd, ".toc");
8226 s = bfd_get_section_by_name (obfd, ".tocbss");
8228 s = bfd_get_section_by_name (obfd, ".plt");
8231 /* This may happen for
8232 o references to TOC base (SYM@toc / TOC[tc0]) without a
8235 o --gc-sections and empty TOC sections
8237 FIXME: Warn user? */
8239 /* Look for a likely section. We probably won't even be
8241 for (s = obfd->sections; s != NULL; s = s->next)
8242 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
8243 == (SEC_ALLOC | SEC_SMALL_DATA))
8246 for (s = obfd->sections; s != NULL; s = s->next)
8247 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
8248 == (SEC_ALLOC | SEC_SMALL_DATA))
8251 for (s = obfd->sections; s != NULL; s = s->next)
8252 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
8255 for (s = obfd->sections; s != NULL; s = s->next)
8256 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
8262 TOCstart = s->output_section->vma + s->output_offset;
8267 /* Build all the stubs associated with the current output file.
8268 The stubs are kept in a hash table attached to the main linker
8269 hash table. This function is called via gldelf64ppc_finish. */
8272 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
8273 struct bfd_link_info *info,
8276 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8279 int stub_sec_count = 0;
8281 htab->emit_stub_syms = emit_stub_syms;
8283 /* Allocate memory to hold the linker stubs. */
8284 for (stub_sec = htab->stub_bfd->sections;
8286 stub_sec = stub_sec->next)
8287 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
8288 && stub_sec->size != 0)
8290 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
8291 if (stub_sec->contents == NULL)
8293 /* We want to check that built size is the same as calculated
8294 size. rawsize is a convenient location to use. */
8295 stub_sec->rawsize = stub_sec->size;
8299 if (htab->plt != NULL)
8304 /* Build the .glink plt call stub. */
8305 plt0 = (htab->plt->output_section->vma
8306 + htab->plt->output_offset
8307 - (htab->glink->output_section->vma
8308 + htab->glink->output_offset
8309 + GLINK_CALL_STUB_SIZE));
8310 if (plt0 + 0x80008000 > 0xffffffff)
8312 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
8313 bfd_set_error (bfd_error_bad_value);
8317 if (htab->emit_stub_syms)
8319 struct elf_link_hash_entry *h;
8320 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
8323 if (h->root.type == bfd_link_hash_new)
8325 h->root.type = bfd_link_hash_defined;
8326 h->root.u.def.section = htab->glink;
8327 h->root.u.def.value = 0;
8328 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
8329 | ELF_LINK_HASH_DEF_REGULAR
8330 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
8331 | ELF_LINK_FORCED_LOCAL);
8334 p = htab->glink->contents;
8335 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
8337 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
8339 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
8341 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
8343 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
8345 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
8347 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
8349 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
8351 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
8353 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
8355 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
8357 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
8359 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
8361 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
8363 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
8365 bfd_put_32 (htab->glink->owner, BCTR, p);
8368 /* Build the .glink lazy link call stubs. */
8370 while (p < htab->glink->contents + htab->glink->size)
8374 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
8379 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
8381 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
8384 bfd_put_32 (htab->glink->owner,
8385 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
8389 htab->glink->rawsize = p - htab->glink->contents;
8392 if (htab->brlt->size != 0)
8394 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
8396 if (htab->brlt->contents == NULL)
8399 if (info->shared && htab->relbrlt->size != 0)
8401 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
8402 htab->relbrlt->size);
8403 if (htab->relbrlt->contents == NULL)
8407 /* Build the stubs as directed by the stub hash table. */
8408 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
8410 for (stub_sec = htab->stub_bfd->sections;
8412 stub_sec = stub_sec->next)
8413 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
8415 stub_sec_count += 1;
8416 if (stub_sec->rawsize != stub_sec->size)
8420 if (stub_sec != NULL
8421 || htab->glink->rawsize != htab->glink->size)
8423 htab->stub_error = TRUE;
8424 (*_bfd_error_handler) (_("stubs don't match calculated size"));
8427 if (htab->stub_error)
8432 *stats = bfd_malloc (500);
8436 sprintf (*stats, _("linker stubs in %u groups\n"
8439 " long branch %lu\n"
8440 " long toc adj %lu\n"
8443 htab->stub_count[ppc_stub_long_branch - 1],
8444 htab->stub_count[ppc_stub_long_branch_r2off - 1],
8445 htab->stub_count[ppc_stub_plt_branch - 1],
8446 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
8447 htab->stub_count[ppc_stub_plt_call - 1]);
8452 /* This function undoes the changes made by add_symbol_adjust. */
8455 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
8457 struct ppc_link_hash_entry *eh;
8459 if (h->root.type == bfd_link_hash_indirect)
8462 if (h->root.type == bfd_link_hash_warning)
8463 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8465 eh = (struct ppc_link_hash_entry *) h;
8466 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
8469 eh->elf.root.type = bfd_link_hash_undefined;
8474 ppc64_elf_restore_symbols (struct bfd_link_info *info)
8476 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8477 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
8480 /* The RELOCATE_SECTION function is called by the ELF backend linker
8481 to handle the relocations for a section.
8483 The relocs are always passed as Rela structures; if the section
8484 actually uses Rel structures, the r_addend field will always be
8487 This function is responsible for adjust the section contents as
8488 necessary, and (if using Rela relocs and generating a
8489 relocatable output file) adjusting the reloc addend as
8492 This function does not have to worry about setting the reloc
8493 address or the reloc symbol index.
8495 LOCAL_SYMS is a pointer to the swapped in local symbols.
8497 LOCAL_SECTIONS is an array giving the section in the input file
8498 corresponding to the st_shndx field of each local symbol.
8500 The global hash table entry for the global symbols can be found
8501 via elf_sym_hashes (input_bfd).
8503 When generating relocatable output, this function must handle
8504 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
8505 going to be the section symbol corresponding to the output
8506 section, which means that the addend must be adjusted
8510 ppc64_elf_relocate_section (bfd *output_bfd,
8511 struct bfd_link_info *info,
8513 asection *input_section,
8515 Elf_Internal_Rela *relocs,
8516 Elf_Internal_Sym *local_syms,
8517 asection **local_sections)
8519 struct ppc_link_hash_table *htab;
8520 Elf_Internal_Shdr *symtab_hdr;
8521 struct elf_link_hash_entry **sym_hashes;
8522 Elf_Internal_Rela *rel;
8523 Elf_Internal_Rela *relend;
8524 Elf_Internal_Rela outrel;
8526 struct got_entry **local_got_ents;
8528 bfd_boolean ret = TRUE;
8530 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
8531 bfd_boolean is_power4 = FALSE;
8533 if (info->relocatable)
8536 /* Initialize howto table if needed. */
8537 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8540 htab = ppc_hash_table (info);
8541 local_got_ents = elf_local_got_ents (input_bfd);
8542 TOCstart = elf_gp (output_bfd);
8543 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8544 sym_hashes = elf_sym_hashes (input_bfd);
8545 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
8548 relend = relocs + input_section->reloc_count;
8549 for (; rel < relend; rel++)
8551 enum elf_ppc64_reloc_type r_type;
8553 bfd_reloc_status_type r;
8554 Elf_Internal_Sym *sym;
8556 struct elf_link_hash_entry *h_elf;
8557 struct ppc_link_hash_entry *h;
8558 struct ppc_link_hash_entry *fdh;
8559 const char *sym_name;
8560 unsigned long r_symndx, toc_symndx;
8561 char tls_mask, tls_gd, tls_type;
8564 bfd_boolean unresolved_reloc;
8566 unsigned long insn, mask;
8567 struct ppc_stub_hash_entry *stub_entry;
8568 bfd_vma max_br_offset;
8571 r_type = ELF64_R_TYPE (rel->r_info);
8572 r_symndx = ELF64_R_SYM (rel->r_info);
8574 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
8575 symbol of the previous ADDR64 reloc. The symbol gives us the
8576 proper TOC base to use. */
8577 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
8579 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
8581 r_symndx = ELF64_R_SYM (rel[-1].r_info);
8587 unresolved_reloc = FALSE;
8590 if (r_symndx < symtab_hdr->sh_info)
8592 /* It's a local symbol. */
8595 sym = local_syms + r_symndx;
8596 sec = local_sections[r_symndx];
8597 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
8598 sym_type = ELF64_ST_TYPE (sym->st_info);
8599 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
8600 opd_adjust = get_opd_info (sec);
8601 if (opd_adjust != NULL)
8603 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
8607 relocation += adjust;
8612 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
8613 r_symndx, symtab_hdr, sym_hashes,
8614 h_elf, sec, relocation,
8615 unresolved_reloc, warned);
8616 sym_name = h_elf->root.root.string;
8617 sym_type = h_elf->type;
8619 h = (struct ppc_link_hash_entry *) h_elf;
8621 /* TLS optimizations. Replace instruction sequences and relocs
8622 based on information we collected in tls_optimize. We edit
8623 RELOCS so that --emit-relocs will output something sensible
8624 for the final instruction stream. */
8628 if (IS_PPC64_TLS_RELOC (r_type))
8631 tls_mask = h->tls_mask;
8632 else if (local_got_ents != NULL)
8635 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
8636 tls_mask = lgot_masks[r_symndx];
8638 if (tls_mask == 0 && r_type == R_PPC64_TLS)
8640 /* Check for toc tls entries. */
8643 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
8648 tls_mask = *toc_tls;
8652 /* Check that tls relocs are used with tls syms, and non-tls
8653 relocs are used with non-tls syms. */
8655 && r_type != R_PPC64_NONE
8657 || h->elf.root.type == bfd_link_hash_defined
8658 || h->elf.root.type == bfd_link_hash_defweak)
8659 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
8661 if (r_type == R_PPC64_TLS && tls_mask != 0)
8662 /* R_PPC64_TLS is OK against a symbol in the TOC. */
8665 (*_bfd_error_handler)
8666 (sym_type == STT_TLS
8667 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
8668 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
8671 (long) rel->r_offset,
8672 ppc64_elf_howto_table[r_type]->name,
8676 /* Ensure reloc mapping code below stays sane. */
8677 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
8678 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
8679 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
8680 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
8681 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
8682 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
8683 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
8684 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
8685 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
8686 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
8695 case R_PPC64_TOC16_LO:
8696 case R_PPC64_TOC16_DS:
8697 case R_PPC64_TOC16_LO_DS:
8699 /* Check for toc tls entries. */
8703 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
8710 tls_mask = *toc_tls;
8711 if (r_type == R_PPC64_TOC16_DS
8712 || r_type == R_PPC64_TOC16_LO_DS)
8715 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
8720 /* If we found a GD reloc pair, then we might be
8721 doing a GD->IE transition. */
8724 tls_gd = TLS_TPRELGD;
8725 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
8726 goto tls_get_addr_check;
8728 else if (retval == 3)
8730 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
8731 goto tls_get_addr_check;
8738 case R_PPC64_GOT_TPREL16_DS:
8739 case R_PPC64_GOT_TPREL16_LO_DS:
8741 && (tls_mask & TLS_TPREL) == 0)
8744 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
8746 insn |= 0x3c0d0000; /* addis 0,13,0 */
8747 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
8748 r_type = R_PPC64_TPREL16_HA;
8749 if (toc_symndx != 0)
8751 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
8752 /* We changed the symbol. Start over in order to
8753 get h, sym, sec etc. right. */
8758 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8764 && (tls_mask & TLS_TPREL) == 0)
8767 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8768 if ((insn & ((0x3f << 26) | (31 << 11)))
8769 == ((31 << 26) | (13 << 11)))
8770 rtra = insn & ((1 << 26) - (1 << 16));
8771 else if ((insn & ((0x3f << 26) | (31 << 16)))
8772 == ((31 << 26) | (13 << 16)))
8773 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
8776 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
8779 else if ((insn & (31 << 1)) == 23 << 1
8780 && ((insn & (31 << 6)) < 14 << 6
8781 || ((insn & (31 << 6)) >= 16 << 6
8782 && (insn & (31 << 6)) < 24 << 6)))
8783 /* load and store indexed -> dform. */
8784 insn = (32 | ((insn >> 6) & 31)) << 26;
8785 else if ((insn & (31 << 1)) == 21 << 1
8786 && (insn & (0x1a << 6)) == 0)
8787 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
8788 insn = (((58 | ((insn >> 6) & 4)) << 26)
8789 | ((insn >> 6) & 1));
8790 else if ((insn & (31 << 1)) == 21 << 1
8791 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
8793 insn = (58 << 26) | 2;
8797 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8798 /* Was PPC64_TLS which sits on insn boundary, now
8799 PPC64_TPREL16_LO which is at insn+2. */
8801 r_type = R_PPC64_TPREL16_LO;
8802 if (toc_symndx != 0)
8804 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
8805 /* We changed the symbol. Start over in order to
8806 get h, sym, sec etc. right. */
8811 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8815 case R_PPC64_GOT_TLSGD16_HI:
8816 case R_PPC64_GOT_TLSGD16_HA:
8817 tls_gd = TLS_TPRELGD;
8818 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
8822 case R_PPC64_GOT_TLSLD16_HI:
8823 case R_PPC64_GOT_TLSLD16_HA:
8824 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
8827 if ((tls_mask & tls_gd) != 0)
8828 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
8829 + R_PPC64_GOT_TPREL16_DS);
8832 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
8834 r_type = R_PPC64_NONE;
8836 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8840 case R_PPC64_GOT_TLSGD16:
8841 case R_PPC64_GOT_TLSGD16_LO:
8842 tls_gd = TLS_TPRELGD;
8843 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
8844 goto tls_get_addr_check;
8847 case R_PPC64_GOT_TLSLD16:
8848 case R_PPC64_GOT_TLSLD16_LO:
8849 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
8852 if (rel + 1 < relend)
8854 enum elf_ppc64_reloc_type r_type2;
8855 unsigned long r_symndx2;
8856 struct elf_link_hash_entry *h2;
8857 bfd_vma insn1, insn2, insn3;
8860 /* The next instruction should be a call to
8861 __tls_get_addr. Peek at the reloc to be sure. */
8862 r_type2 = ELF64_R_TYPE (rel[1].r_info);
8863 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
8864 if (r_symndx2 < symtab_hdr->sh_info
8865 || (r_type2 != R_PPC64_REL14
8866 && r_type2 != R_PPC64_REL14_BRTAKEN
8867 && r_type2 != R_PPC64_REL14_BRNTAKEN
8868 && r_type2 != R_PPC64_REL24))
8871 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
8872 while (h2->root.type == bfd_link_hash_indirect
8873 || h2->root.type == bfd_link_hash_warning)
8874 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8875 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
8876 && h2 != &htab->tls_get_addr_fd->elf))
8879 /* OK, it checks out. Replace the call. */
8880 offset = rel[1].r_offset;
8881 insn1 = bfd_get_32 (output_bfd,
8882 contents + rel->r_offset - 2);
8883 insn3 = bfd_get_32 (output_bfd,
8884 contents + offset + 4);
8885 if ((tls_mask & tls_gd) != 0)
8888 insn1 &= (1 << 26) - (1 << 2);
8889 insn1 |= 58 << 26; /* ld */
8890 insn2 = 0x7c636a14; /* add 3,3,13 */
8891 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
8892 if ((tls_mask & TLS_EXPLICIT) == 0)
8893 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
8894 + R_PPC64_GOT_TPREL16_DS);
8896 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
8897 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8902 insn1 = 0x3c6d0000; /* addis 3,13,0 */
8903 insn2 = 0x38630000; /* addi 3,3,0 */
8906 /* Was an LD reloc. */
8908 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8909 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8911 else if (toc_symndx != 0)
8912 r_symndx = toc_symndx;
8913 r_type = R_PPC64_TPREL16_HA;
8914 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8915 rel[1].r_info = ELF64_R_INFO (r_symndx,
8916 R_PPC64_TPREL16_LO);
8917 rel[1].r_offset += 2;
8920 || insn3 == CROR_151515 || insn3 == CROR_313131)
8924 rel[1].r_offset += 4;
8926 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
8927 bfd_put_32 (output_bfd, insn2, contents + offset);
8928 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
8929 if (tls_gd == 0 || toc_symndx != 0)
8931 /* We changed the symbol. Start over in order
8932 to get h, sym, sec etc. right. */
8940 case R_PPC64_DTPMOD64:
8941 if (rel + 1 < relend
8942 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
8943 && rel[1].r_offset == rel->r_offset + 8)
8945 if ((tls_mask & TLS_GD) == 0)
8947 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
8948 if ((tls_mask & TLS_TPRELGD) != 0)
8949 r_type = R_PPC64_TPREL64;
8952 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
8953 r_type = R_PPC64_NONE;
8955 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8960 if ((tls_mask & TLS_LD) == 0)
8962 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
8963 r_type = R_PPC64_NONE;
8964 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8969 case R_PPC64_TPREL64:
8970 if ((tls_mask & TLS_TPREL) == 0)
8972 r_type = R_PPC64_NONE;
8973 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8978 /* Handle other relocations that tweak non-addend part of insn. */
8980 max_br_offset = 1 << 25;
8981 addend = rel->r_addend;
8987 /* Branch taken prediction relocations. */
8988 case R_PPC64_ADDR14_BRTAKEN:
8989 case R_PPC64_REL14_BRTAKEN:
8990 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
8993 /* Branch not taken prediction relocations. */
8994 case R_PPC64_ADDR14_BRNTAKEN:
8995 case R_PPC64_REL14_BRNTAKEN:
8996 insn |= bfd_get_32 (output_bfd,
8997 contents + rel->r_offset) & ~(0x01 << 21);
9001 max_br_offset = 1 << 15;
9005 /* Calls to functions with a different TOC, such as calls to
9006 shared objects, need to alter the TOC pointer. This is
9007 done using a linkage stub. A REL24 branching to these
9008 linkage stubs needs to be followed by a nop, as the nop
9009 will be replaced with an instruction to restore the TOC
9014 && (((fdh = h->oh) != NULL
9015 && fdh->elf.plt.plist != NULL)
9016 || (fdh = h)->elf.plt.plist != NULL))
9018 && sec->output_section != NULL
9019 && sec->id <= htab->top_id
9020 && (htab->stub_group[sec->id].toc_off
9021 != htab->stub_group[input_section->id].toc_off)))
9022 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
9024 && (stub_entry->stub_type == ppc_stub_plt_call
9025 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9026 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
9028 bfd_boolean can_plt_call = FALSE;
9030 if (rel->r_offset + 8 <= input_section->size)
9033 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9035 || nop == CROR_151515 || nop == CROR_313131)
9037 bfd_put_32 (input_bfd, LD_R2_40R1,
9038 contents + rel->r_offset + 4);
9039 can_plt_call = TRUE;
9045 if (stub_entry->stub_type == ppc_stub_plt_call)
9047 /* If this is a plain branch rather than a branch
9048 and link, don't require a nop. */
9050 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9052 can_plt_call = TRUE;
9055 && strcmp (h->elf.root.root.string,
9056 ".__libc_start_main") == 0)
9058 /* Allow crt1 branch to go via a toc adjusting stub. */
9059 can_plt_call = TRUE;
9063 if (strcmp (input_section->output_section->name,
9065 || strcmp (input_section->output_section->name,
9067 (*_bfd_error_handler)
9068 (_("%B(%A+0x%lx): automatic multiple TOCs "
9069 "not supported using your crt files; "
9070 "recompile with -mminimal-toc or upgrade gcc"),
9073 (long) rel->r_offset);
9075 (*_bfd_error_handler)
9076 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9077 "does not allow automatic multiple TOCs; "
9078 "recompile with -mminimal-toc or "
9079 "-fno-optimize-sibling-calls, "
9080 "or make `%s' extern"),
9083 (long) rel->r_offset,
9086 bfd_set_error (bfd_error_bad_value);
9092 && stub_entry->stub_type == ppc_stub_plt_call)
9093 unresolved_reloc = FALSE;
9096 if (stub_entry == NULL
9097 && get_opd_info (sec) != NULL)
9099 /* The branch destination is the value of the opd entry. */
9100 bfd_vma off = (relocation - sec->output_section->vma
9101 - sec->output_offset + rel->r_addend);
9102 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9103 if (dest != (bfd_vma) -1)
9110 /* If the branch is out of reach we ought to have a long
9112 from = (rel->r_offset
9113 + input_section->output_offset
9114 + input_section->output_section->vma);
9116 if (stub_entry == NULL
9117 && (relocation + rel->r_addend - from + max_br_offset
9118 >= 2 * max_br_offset)
9119 && r_type != R_PPC64_ADDR14_BRTAKEN
9120 && r_type != R_PPC64_ADDR14_BRNTAKEN)
9121 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
9124 if (stub_entry != NULL)
9126 /* Munge up the value and addend so that we call the stub
9127 rather than the procedure directly. */
9128 relocation = (stub_entry->stub_offset
9129 + stub_entry->stub_sec->output_offset
9130 + stub_entry->stub_sec->output_section->vma);
9138 /* Set 'a' bit. This is 0b00010 in BO field for branch
9139 on CR(BI) insns (BO == 001at or 011at), and 0b01000
9140 for branch on CTR insns (BO == 1a00t or 1a01t). */
9141 if ((insn & (0x14 << 21)) == (0x04 << 21))
9143 else if ((insn & (0x14 << 21)) == (0x10 << 21))
9150 /* Invert 'y' bit if not the default. */
9151 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
9155 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9158 /* NOP out calls to undefined weak functions.
9159 We can thus call a weak function without first
9160 checking whether the function is defined. */
9162 && h->elf.root.type == bfd_link_hash_undefweak
9163 && r_type == R_PPC64_REL24
9165 && rel->r_addend == 0)
9167 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9178 (*_bfd_error_handler)
9179 (_("%B: unknown relocation type %d for symbol %s"),
9180 input_bfd, (int) r_type, sym_name);
9182 bfd_set_error (bfd_error_bad_value);
9188 case R_PPC64_GNU_VTINHERIT:
9189 case R_PPC64_GNU_VTENTRY:
9192 /* GOT16 relocations. Like an ADDR16 using the symbol's
9193 address in the GOT as relocation value instead of the
9194 symbol's value itself. Also, create a GOT entry for the
9195 symbol and put the symbol value there. */
9196 case R_PPC64_GOT_TLSGD16:
9197 case R_PPC64_GOT_TLSGD16_LO:
9198 case R_PPC64_GOT_TLSGD16_HI:
9199 case R_PPC64_GOT_TLSGD16_HA:
9200 tls_type = TLS_TLS | TLS_GD;
9203 case R_PPC64_GOT_TLSLD16:
9204 case R_PPC64_GOT_TLSLD16_LO:
9205 case R_PPC64_GOT_TLSLD16_HI:
9206 case R_PPC64_GOT_TLSLD16_HA:
9207 tls_type = TLS_TLS | TLS_LD;
9210 case R_PPC64_GOT_TPREL16_DS:
9211 case R_PPC64_GOT_TPREL16_LO_DS:
9212 case R_PPC64_GOT_TPREL16_HI:
9213 case R_PPC64_GOT_TPREL16_HA:
9214 tls_type = TLS_TLS | TLS_TPREL;
9217 case R_PPC64_GOT_DTPREL16_DS:
9218 case R_PPC64_GOT_DTPREL16_LO_DS:
9219 case R_PPC64_GOT_DTPREL16_HI:
9220 case R_PPC64_GOT_DTPREL16_HA:
9221 tls_type = TLS_TLS | TLS_DTPREL;
9225 case R_PPC64_GOT16_LO:
9226 case R_PPC64_GOT16_HI:
9227 case R_PPC64_GOT16_HA:
9228 case R_PPC64_GOT16_DS:
9229 case R_PPC64_GOT16_LO_DS:
9232 /* Relocation is to the entry for this symbol in the global
9237 unsigned long indx = 0;
9239 if (tls_type == (TLS_TLS | TLS_LD)
9241 || (h->elf.elf_link_hash_flags
9242 & ELF_LINK_HASH_DEF_DYNAMIC) == 0))
9243 offp = &ppc64_tlsld_got (input_bfd)->offset;
9246 struct got_entry *ent;
9250 bfd_boolean dyn = htab->elf.dynamic_sections_created;
9251 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
9254 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
9255 /* This is actually a static link, or it is a
9256 -Bsymbolic link and the symbol is defined
9257 locally, or the symbol was forced to be local
9258 because of a version file. */
9262 indx = h->elf.dynindx;
9263 unresolved_reloc = FALSE;
9265 ent = h->elf.got.glist;
9269 if (local_got_ents == NULL)
9271 ent = local_got_ents[r_symndx];
9274 for (; ent != NULL; ent = ent->next)
9275 if (ent->addend == rel->r_addend
9276 && ent->owner == input_bfd
9277 && ent->tls_type == tls_type)
9281 offp = &ent->got.offset;
9284 got = ppc64_elf_tdata (input_bfd)->got;
9288 /* The offset must always be a multiple of 8. We use the
9289 least significant bit to record whether we have already
9290 processed this entry. */
9296 /* Generate relocs for the dynamic linker, except in
9297 the case of TLSLD where we'll use one entry per
9299 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
9302 if ((info->shared || indx != 0)
9304 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
9305 || h->elf.root.type != bfd_link_hash_undefweak))
9307 outrel.r_offset = (got->output_section->vma
9308 + got->output_offset
9310 outrel.r_addend = rel->r_addend;
9311 if (tls_type & (TLS_LD | TLS_GD))
9313 outrel.r_addend = 0;
9314 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
9315 if (tls_type == (TLS_TLS | TLS_GD))
9317 loc = relgot->contents;
9318 loc += (relgot->reloc_count++
9319 * sizeof (Elf64_External_Rela));
9320 bfd_elf64_swap_reloca_out (output_bfd,
9322 outrel.r_offset += 8;
9323 outrel.r_addend = rel->r_addend;
9325 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
9328 else if (tls_type == (TLS_TLS | TLS_DTPREL))
9329 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
9330 else if (tls_type == (TLS_TLS | TLS_TPREL))
9331 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
9334 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
9336 /* Write the .got section contents for the sake
9338 loc = got->contents + off;
9339 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
9343 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
9345 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
9347 outrel.r_addend += relocation;
9348 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
9349 outrel.r_addend -= htab->elf.tls_sec->vma;
9351 loc = relgot->contents;
9352 loc += (relgot->reloc_count++
9353 * sizeof (Elf64_External_Rela));
9354 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
9357 /* Init the .got section contents here if we're not
9358 emitting a reloc. */
9361 relocation += rel->r_addend;
9362 if (tls_type == (TLS_TLS | TLS_LD))
9364 else if (tls_type != 0)
9366 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
9367 if (tls_type == (TLS_TLS | TLS_TPREL))
9368 relocation += DTP_OFFSET - TP_OFFSET;
9370 if (tls_type == (TLS_TLS | TLS_GD))
9372 bfd_put_64 (output_bfd, relocation,
9373 got->contents + off + 8);
9378 bfd_put_64 (output_bfd, relocation,
9379 got->contents + off);
9383 if (off >= (bfd_vma) -2)
9386 relocation = got->output_offset + off;
9388 /* TOC base (r2) is TOC start plus 0x8000. */
9389 addend = -TOC_BASE_OFF;
9393 case R_PPC64_PLT16_HA:
9394 case R_PPC64_PLT16_HI:
9395 case R_PPC64_PLT16_LO:
9398 /* Relocation is to the entry for this symbol in the
9399 procedure linkage table. */
9401 /* Resolve a PLT reloc against a local symbol directly,
9402 without using the procedure linkage table. */
9406 /* It's possible that we didn't make a PLT entry for this
9407 symbol. This happens when statically linking PIC code,
9408 or when using -Bsymbolic. Go find a match if there is a
9410 if (htab->plt != NULL)
9412 struct plt_entry *ent;
9413 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
9414 if (ent->addend == rel->r_addend
9415 && ent->plt.offset != (bfd_vma) -1)
9417 relocation = (htab->plt->output_section->vma
9418 + htab->plt->output_offset
9420 unresolved_reloc = FALSE;
9426 /* Relocation value is TOC base. */
9427 relocation = TOCstart;
9429 relocation += htab->stub_group[input_section->id].toc_off;
9430 else if (unresolved_reloc)
9432 else if (sec != NULL && sec->id <= htab->top_id)
9433 relocation += htab->stub_group[sec->id].toc_off;
9435 unresolved_reloc = TRUE;
9438 /* TOC16 relocs. We want the offset relative to the TOC base,
9439 which is the address of the start of the TOC plus 0x8000.
9440 The TOC consists of sections .got, .toc, .tocbss, and .plt,
9443 case R_PPC64_TOC16_LO:
9444 case R_PPC64_TOC16_HI:
9445 case R_PPC64_TOC16_DS:
9446 case R_PPC64_TOC16_LO_DS:
9447 case R_PPC64_TOC16_HA:
9448 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
9451 /* Relocate against the beginning of the section. */
9452 case R_PPC64_SECTOFF:
9453 case R_PPC64_SECTOFF_LO:
9454 case R_PPC64_SECTOFF_HI:
9455 case R_PPC64_SECTOFF_DS:
9456 case R_PPC64_SECTOFF_LO_DS:
9457 case R_PPC64_SECTOFF_HA:
9459 addend -= sec->output_section->vma;
9463 case R_PPC64_REL14_BRNTAKEN:
9464 case R_PPC64_REL14_BRTAKEN:
9468 case R_PPC64_TPREL16:
9469 case R_PPC64_TPREL16_LO:
9470 case R_PPC64_TPREL16_HI:
9471 case R_PPC64_TPREL16_HA:
9472 case R_PPC64_TPREL16_DS:
9473 case R_PPC64_TPREL16_LO_DS:
9474 case R_PPC64_TPREL16_HIGHER:
9475 case R_PPC64_TPREL16_HIGHERA:
9476 case R_PPC64_TPREL16_HIGHEST:
9477 case R_PPC64_TPREL16_HIGHESTA:
9478 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
9480 /* The TPREL16 relocs shouldn't really be used in shared
9481 libs as they will result in DT_TEXTREL being set, but
9482 support them anyway. */
9486 case R_PPC64_DTPREL16:
9487 case R_PPC64_DTPREL16_LO:
9488 case R_PPC64_DTPREL16_HI:
9489 case R_PPC64_DTPREL16_HA:
9490 case R_PPC64_DTPREL16_DS:
9491 case R_PPC64_DTPREL16_LO_DS:
9492 case R_PPC64_DTPREL16_HIGHER:
9493 case R_PPC64_DTPREL16_HIGHERA:
9494 case R_PPC64_DTPREL16_HIGHEST:
9495 case R_PPC64_DTPREL16_HIGHESTA:
9496 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
9499 case R_PPC64_DTPMOD64:
9504 case R_PPC64_TPREL64:
9505 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
9508 case R_PPC64_DTPREL64:
9509 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
9512 /* Relocations that may need to be propagated if this is a
9517 case R_PPC64_ADDR14:
9518 case R_PPC64_ADDR14_BRNTAKEN:
9519 case R_PPC64_ADDR14_BRTAKEN:
9520 case R_PPC64_ADDR16:
9521 case R_PPC64_ADDR16_DS:
9522 case R_PPC64_ADDR16_HA:
9523 case R_PPC64_ADDR16_HI:
9524 case R_PPC64_ADDR16_HIGHER:
9525 case R_PPC64_ADDR16_HIGHERA:
9526 case R_PPC64_ADDR16_HIGHEST:
9527 case R_PPC64_ADDR16_HIGHESTA:
9528 case R_PPC64_ADDR16_LO:
9529 case R_PPC64_ADDR16_LO_DS:
9530 case R_PPC64_ADDR24:
9531 case R_PPC64_ADDR32:
9532 case R_PPC64_ADDR64:
9533 case R_PPC64_UADDR16:
9534 case R_PPC64_UADDR32:
9535 case R_PPC64_UADDR64:
9536 /* r_symndx will be zero only for relocs against symbols
9537 from removed linkonce sections, or sections discarded by
9545 if ((input_section->flags & SEC_ALLOC) == 0)
9548 if (NO_OPD_RELOCS && is_opd)
9553 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
9554 || h->elf.root.type != bfd_link_hash_undefweak)
9555 && (MUST_BE_DYN_RELOC (r_type)
9556 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
9557 || (ELIMINATE_COPY_RELOCS
9560 && h->elf.dynindx != -1
9561 && !(h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF)
9562 && (h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)
9563 && !(h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
9565 Elf_Internal_Rela outrel;
9566 bfd_boolean skip, relocate;
9571 /* When generating a dynamic object, these relocations
9572 are copied into the output file to be resolved at run
9578 out_off = _bfd_elf_section_offset (output_bfd, info,
9579 input_section, rel->r_offset);
9580 if (out_off == (bfd_vma) -1)
9582 else if (out_off == (bfd_vma) -2)
9583 skip = TRUE, relocate = TRUE;
9584 out_off += (input_section->output_section->vma
9585 + input_section->output_offset);
9586 outrel.r_offset = out_off;
9587 outrel.r_addend = rel->r_addend;
9589 /* Optimize unaligned reloc use. */
9590 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
9591 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
9592 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
9593 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
9594 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
9595 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
9596 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
9597 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
9598 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
9601 memset (&outrel, 0, sizeof outrel);
9602 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
9604 && r_type != R_PPC64_TOC)
9605 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
9608 /* This symbol is local, or marked to become local,
9609 or this is an opd section reloc which must point
9610 at a local function. */
9611 outrel.r_addend += relocation;
9612 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
9614 if (is_opd && h != NULL)
9616 /* Lie about opd entries. This case occurs
9617 when building shared libraries and we
9618 reference a function in another shared
9619 lib. The same thing happens for a weak
9620 definition in an application that's
9621 overridden by a strong definition in a
9622 shared lib. (I believe this is a generic
9623 bug in binutils handling of weak syms.)
9624 In these cases we won't use the opd
9625 entry in this lib. */
9626 unresolved_reloc = FALSE;
9628 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9630 /* We need to relocate .opd contents for ld.so.
9631 Prelink also wants simple and consistent rules
9632 for relocs. This make all RELATIVE relocs have
9633 *r_offset equal to r_addend. */
9640 if (bfd_is_abs_section (sec))
9642 else if (sec == NULL || sec->owner == NULL)
9644 bfd_set_error (bfd_error_bad_value);
9651 osec = sec->output_section;
9652 indx = elf_section_data (osec)->dynindx;
9654 /* We are turning this relocation into one
9655 against a section symbol, so subtract out
9656 the output section's address but not the
9657 offset of the input section in the output
9659 outrel.r_addend -= osec->vma;
9662 outrel.r_info = ELF64_R_INFO (indx, r_type);
9666 sreloc = elf_section_data (input_section)->sreloc;
9670 loc = sreloc->contents;
9671 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
9672 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
9674 /* If this reloc is against an external symbol, it will
9675 be computed at runtime, so there's no need to do
9676 anything now. However, for the sake of prelink ensure
9677 that the section contents are a known value. */
9680 unresolved_reloc = FALSE;
9681 /* The value chosen here is quite arbitrary as ld.so
9682 ignores section contents except for the special
9683 case of .opd where the contents might be accessed
9684 before relocation. Choose zero, as that won't
9685 cause reloc overflow. */
9688 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
9689 to improve backward compatibility with older
9691 if (r_type == R_PPC64_ADDR64)
9692 addend = outrel.r_addend;
9693 /* Adjust pc_relative relocs to have zero in *r_offset. */
9694 else if (ppc64_elf_howto_table[r_type]->pc_relative)
9695 addend = (input_section->output_section->vma
9696 + input_section->output_offset
9703 case R_PPC64_GLOB_DAT:
9704 case R_PPC64_JMP_SLOT:
9705 case R_PPC64_RELATIVE:
9706 /* We shouldn't ever see these dynamic relocs in relocatable
9710 case R_PPC64_PLTGOT16:
9711 case R_PPC64_PLTGOT16_DS:
9712 case R_PPC64_PLTGOT16_HA:
9713 case R_PPC64_PLTGOT16_HI:
9714 case R_PPC64_PLTGOT16_LO:
9715 case R_PPC64_PLTGOT16_LO_DS:
9716 case R_PPC64_PLTREL32:
9717 case R_PPC64_PLTREL64:
9718 /* These ones haven't been implemented yet. */
9720 (*_bfd_error_handler)
9721 (_("%B: relocation %s is not supported for symbol %s."),
9723 ppc64_elf_howto_table[r_type]->name, sym_name);
9725 bfd_set_error (bfd_error_invalid_operation);
9730 /* Do any further special processing. */
9736 case R_PPC64_ADDR16_HA:
9737 case R_PPC64_ADDR16_HIGHERA:
9738 case R_PPC64_ADDR16_HIGHESTA:
9739 case R_PPC64_GOT16_HA:
9740 case R_PPC64_PLTGOT16_HA:
9741 case R_PPC64_PLT16_HA:
9742 case R_PPC64_TOC16_HA:
9743 case R_PPC64_SECTOFF_HA:
9744 case R_PPC64_TPREL16_HA:
9745 case R_PPC64_DTPREL16_HA:
9746 case R_PPC64_GOT_TLSGD16_HA:
9747 case R_PPC64_GOT_TLSLD16_HA:
9748 case R_PPC64_GOT_TPREL16_HA:
9749 case R_PPC64_GOT_DTPREL16_HA:
9750 case R_PPC64_TPREL16_HIGHER:
9751 case R_PPC64_TPREL16_HIGHERA:
9752 case R_PPC64_TPREL16_HIGHEST:
9753 case R_PPC64_TPREL16_HIGHESTA:
9754 case R_PPC64_DTPREL16_HIGHER:
9755 case R_PPC64_DTPREL16_HIGHERA:
9756 case R_PPC64_DTPREL16_HIGHEST:
9757 case R_PPC64_DTPREL16_HIGHESTA:
9758 /* It's just possible that this symbol is a weak symbol
9759 that's not actually defined anywhere. In that case,
9760 'sec' would be NULL, and we should leave the symbol
9761 alone (it will be set to zero elsewhere in the link). */
9763 /* Add 0x10000 if sign bit in 0:15 is set.
9764 Bits 0:15 are not used. */
9768 case R_PPC64_ADDR16_DS:
9769 case R_PPC64_ADDR16_LO_DS:
9770 case R_PPC64_GOT16_DS:
9771 case R_PPC64_GOT16_LO_DS:
9772 case R_PPC64_PLT16_LO_DS:
9773 case R_PPC64_SECTOFF_DS:
9774 case R_PPC64_SECTOFF_LO_DS:
9775 case R_PPC64_TOC16_DS:
9776 case R_PPC64_TOC16_LO_DS:
9777 case R_PPC64_PLTGOT16_DS:
9778 case R_PPC64_PLTGOT16_LO_DS:
9779 case R_PPC64_GOT_TPREL16_DS:
9780 case R_PPC64_GOT_TPREL16_LO_DS:
9781 case R_PPC64_GOT_DTPREL16_DS:
9782 case R_PPC64_GOT_DTPREL16_LO_DS:
9783 case R_PPC64_TPREL16_DS:
9784 case R_PPC64_TPREL16_LO_DS:
9785 case R_PPC64_DTPREL16_DS:
9786 case R_PPC64_DTPREL16_LO_DS:
9787 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9789 /* If this reloc is against an lq insn, then the value must be
9790 a multiple of 16. This is somewhat of a hack, but the
9791 "correct" way to do this by defining _DQ forms of all the
9792 _DS relocs bloats all reloc switches in this file. It
9793 doesn't seem to make much sense to use any of these relocs
9794 in data, so testing the insn should be safe. */
9795 if ((insn & (0x3f << 26)) == (56u << 26))
9797 if (((relocation + addend) & mask) != 0)
9799 (*_bfd_error_handler)
9800 (_("%B: error: relocation %s not a multiple of %d"),
9802 ppc64_elf_howto_table[r_type]->name,
9804 bfd_set_error (bfd_error_bad_value);
9811 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
9812 because such sections are not SEC_ALLOC and thus ld.so will
9813 not process them. */
9814 if (unresolved_reloc
9815 && !((input_section->flags & SEC_DEBUGGING) != 0
9816 && (h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
9818 (*_bfd_error_handler)
9819 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
9822 (long) rel->r_offset,
9823 ppc64_elf_howto_table[(int) r_type]->name,
9824 h->elf.root.root.string);
9828 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
9836 if (r != bfd_reloc_ok)
9838 if (sym_name == NULL)
9839 sym_name = "(null)";
9840 if (r == bfd_reloc_overflow)
9845 && h->elf.root.type == bfd_link_hash_undefweak
9846 && ppc64_elf_howto_table[r_type]->pc_relative)
9848 /* Assume this is a call protected by other code that
9849 detects the symbol is undefined. If this is the case,
9850 we can safely ignore the overflow. If not, the
9851 program is hosed anyway, and a little warning isn't
9857 if (!((*info->callbacks->reloc_overflow)
9858 (info, sym_name, ppc64_elf_howto_table[r_type]->name,
9859 rel->r_addend, input_bfd, input_section, rel->r_offset)))
9864 (*_bfd_error_handler)
9865 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
9868 (long) rel->r_offset,
9869 ppc64_elf_howto_table[r_type]->name,
9880 /* Adjust the value of any local symbols in opd sections. */
9883 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
9884 const char *name ATTRIBUTE_UNUSED,
9885 Elf_Internal_Sym *elfsym,
9886 asection *input_sec,
9887 struct elf_link_hash_entry *h)
9889 long *opd_adjust, adjust;
9895 opd_adjust = get_opd_info (input_sec);
9896 if (opd_adjust == NULL)
9899 value = elfsym->st_value - input_sec->output_offset;
9900 if (!info->relocatable)
9901 value -= input_sec->output_section->vma;
9903 adjust = opd_adjust[value / 8];
9905 elfsym->st_value = 0;
9907 elfsym->st_value += adjust;
9911 /* Finish up dynamic symbol handling. We set the contents of various
9912 dynamic sections here. */
9915 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
9916 struct bfd_link_info *info,
9917 struct elf_link_hash_entry *h,
9918 Elf_Internal_Sym *sym)
9920 struct ppc_link_hash_table *htab;
9922 struct plt_entry *ent;
9923 Elf_Internal_Rela rela;
9926 htab = ppc_hash_table (info);
9927 dynobj = htab->elf.dynobj;
9929 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9930 if (ent->plt.offset != (bfd_vma) -1)
9932 /* This symbol has an entry in the procedure linkage
9933 table. Set it up. */
9935 if (htab->plt == NULL
9936 || htab->relplt == NULL
9937 || htab->glink == NULL)
9940 /* Create a JMP_SLOT reloc to inform the dynamic linker to
9941 fill in the PLT entry. */
9942 rela.r_offset = (htab->plt->output_section->vma
9943 + htab->plt->output_offset
9945 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
9946 rela.r_addend = ent->addend;
9948 loc = htab->relplt->contents;
9949 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
9950 * sizeof (Elf64_External_Rela));
9951 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
9954 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
9956 Elf_Internal_Rela rela;
9959 /* This symbol needs a copy reloc. Set it up. */
9961 if (h->dynindx == -1
9962 || (h->root.type != bfd_link_hash_defined
9963 && h->root.type != bfd_link_hash_defweak)
9964 || htab->relbss == NULL)
9967 rela.r_offset = (h->root.u.def.value
9968 + h->root.u.def.section->output_section->vma
9969 + h->root.u.def.section->output_offset);
9970 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
9972 loc = htab->relbss->contents;
9973 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
9974 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
9977 /* Mark some specially defined symbols as absolute. */
9978 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
9979 sym->st_shndx = SHN_ABS;
9984 /* Used to decide how to sort relocs in an optimal manner for the
9985 dynamic linker, before writing them out. */
9987 static enum elf_reloc_type_class
9988 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
9990 enum elf_ppc64_reloc_type r_type;
9992 r_type = ELF64_R_TYPE (rela->r_info);
9995 case R_PPC64_RELATIVE:
9996 return reloc_class_relative;
9997 case R_PPC64_JMP_SLOT:
9998 return reloc_class_plt;
10000 return reloc_class_copy;
10002 return reloc_class_normal;
10006 /* Finish up the dynamic sections. */
10009 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10010 struct bfd_link_info *info)
10012 struct ppc_link_hash_table *htab;
10016 htab = ppc_hash_table (info);
10017 dynobj = htab->elf.dynobj;
10018 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10020 if (htab->elf.dynamic_sections_created)
10022 Elf64_External_Dyn *dyncon, *dynconend;
10024 if (sdyn == NULL || htab->got == NULL)
10027 dyncon = (Elf64_External_Dyn *) sdyn->contents;
10028 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
10029 for (; dyncon < dynconend; dyncon++)
10031 Elf_Internal_Dyn dyn;
10034 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10041 case DT_PPC64_GLINK:
10043 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10044 /* We stupidly defined DT_PPC64_GLINK to be the start
10045 of glink rather than the first entry point, which is
10046 what ld.so needs, and now have a bigger stub to
10047 support automatic multiple TOCs. */
10048 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
10052 s = bfd_get_section_by_name (output_bfd, ".opd");
10055 dyn.d_un.d_ptr = s->vma;
10058 case DT_PPC64_OPDSZ:
10059 s = bfd_get_section_by_name (output_bfd, ".opd");
10062 dyn.d_un.d_val = s->size;
10067 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10072 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10076 dyn.d_un.d_val = htab->relplt->size;
10080 /* Don't count procedure linkage table relocs in the
10081 overall reloc count. */
10085 dyn.d_un.d_val -= s->size;
10089 /* We may not be using the standard ELF linker script.
10090 If .rela.plt is the first .rela section, we adjust
10091 DT_RELA to not include it. */
10095 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10097 dyn.d_un.d_ptr += s->size;
10101 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
10105 if (htab->got != NULL && htab->got->size != 0)
10107 /* Fill in the first entry in the global offset table.
10108 We use it to hold the link-time TOCbase. */
10109 bfd_put_64 (output_bfd,
10110 elf_gp (output_bfd) + TOC_BASE_OFF,
10111 htab->got->contents);
10113 /* Set .got entry size. */
10114 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
10117 if (htab->plt != NULL && htab->plt->size != 0)
10119 /* Set .plt entry size. */
10120 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
10124 /* We need to handle writing out multiple GOT sections ourselves,
10125 since we didn't add them to DYNOBJ. */
10126 while ((dynobj = dynobj->link_next) != NULL)
10129 s = ppc64_elf_tdata (dynobj)->got;
10132 && s->output_section != bfd_abs_section_ptr
10133 && !bfd_set_section_contents (output_bfd, s->output_section,
10134 s->contents, s->output_offset,
10137 s = ppc64_elf_tdata (dynobj)->relgot;
10140 && s->output_section != bfd_abs_section_ptr
10141 && !bfd_set_section_contents (output_bfd, s->output_section,
10142 s->contents, s->output_offset,
10150 #include "elf64-target.h"