1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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_header_size 8
71 #define elf_backend_can_gc_sections 1
72 #define elf_backend_can_refcount 1
73 #define elf_backend_rela_normal 1
75 #define bfd_elf64_mkobject ppc64_elf_mkobject
76 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
77 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
78 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
79 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
80 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
81 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
83 #define elf_backend_object_p ppc64_elf_object_p
84 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
85 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
86 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
87 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
88 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
89 #define elf_backend_check_directives ppc64_elf_check_directives
90 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
91 #define elf_backend_check_relocs ppc64_elf_check_relocs
92 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
93 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
94 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
95 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
96 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
97 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
98 #define elf_backend_relocate_section ppc64_elf_relocate_section
99 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
100 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
101 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
102 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
103 #define elf_backend_special_sections ppc64_elf_special_sections
105 /* The name of the dynamic interpreter. This is put in the .interp
107 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
109 /* The size in bytes of an entry in the procedure linkage table. */
110 #define PLT_ENTRY_SIZE 24
112 /* The initial size of the plt reserved for the dynamic linker. */
113 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
115 /* TOC base pointers offset from start of TOC. */
116 #define TOC_BASE_OFF 0x8000
118 /* Offset of tp and dtp pointers from start of TLS block. */
119 #define TP_OFFSET 0x7000
120 #define DTP_OFFSET 0x8000
122 /* .plt call stub instructions. The normal stub is like this, but
123 sometimes the .plt entry crosses a 64k boundary and we need to
124 insert an addis to adjust r12. */
125 #define PLT_CALL_STUB_SIZE (7*4)
126 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
127 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
128 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
129 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
130 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
131 /* ld %r11,xxx+16@l(%r12) */
132 #define BCTR 0x4e800420 /* bctr */
135 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
136 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
138 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
140 /* glink call stub instructions. We enter with the index in R0, and the
141 address of glink entry in CTR. From that, we can calculate PLT0. */
142 #define GLINK_CALL_STUB_SIZE (16*4)
143 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
144 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
145 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
146 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
147 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
148 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
149 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
150 /* sub %r12,%r12,%r11 */
151 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
152 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
153 /* ld %r11,xxx@l(%r12) */
154 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
157 /* ld %r11,16(%r12) */
161 #define NOP 0x60000000
163 /* Some other nops. */
164 #define CROR_151515 0x4def7b82
165 #define CROR_313131 0x4ffffb82
167 /* .glink entries for the first 32k functions are two instructions. */
168 #define LI_R0_0 0x38000000 /* li %r0,0 */
169 #define B_DOT 0x48000000 /* b . */
171 /* After that, we need two instructions to load the index, followed by
173 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
174 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
176 /* Instructions used by the save and restore reg functions. */
177 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
178 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
179 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
180 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
181 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
182 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
183 #define LI_R12_0 0x39800000 /* li %r12,0 */
184 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
185 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
186 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
187 #define BLR 0x4e800020 /* blr */
189 /* Since .opd is an array of descriptors and each entry will end up
190 with identical R_PPC64_RELATIVE relocs, there is really no need to
191 propagate .opd relocs; The dynamic linker should be taught to
192 relocate .opd without reloc entries. */
193 #ifndef NO_OPD_RELOCS
194 #define NO_OPD_RELOCS 0
197 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
199 /* Relocation HOWTO's. */
200 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
202 static reloc_howto_type ppc64_elf_howto_raw[] = {
203 /* This reloc does nothing. */
204 HOWTO (R_PPC64_NONE, /* type */
206 2, /* size (0 = byte, 1 = short, 2 = long) */
208 FALSE, /* pc_relative */
210 complain_overflow_dont, /* complain_on_overflow */
211 bfd_elf_generic_reloc, /* special_function */
212 "R_PPC64_NONE", /* name */
213 FALSE, /* partial_inplace */
216 FALSE), /* pcrel_offset */
218 /* A standard 32 bit relocation. */
219 HOWTO (R_PPC64_ADDR32, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE, /* pc_relative */
225 complain_overflow_bitfield, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC64_ADDR32", /* name */
228 FALSE, /* partial_inplace */
230 0xffffffff, /* dst_mask */
231 FALSE), /* pcrel_offset */
233 /* An absolute 26 bit branch; the lower two bits must be zero.
234 FIXME: we don't check that, we just clear them. */
235 HOWTO (R_PPC64_ADDR24, /* type */
237 2, /* size (0 = byte, 1 = short, 2 = long) */
239 FALSE, /* pc_relative */
241 complain_overflow_bitfield, /* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_PPC64_ADDR24", /* name */
244 FALSE, /* partial_inplace */
246 0x03fffffc, /* dst_mask */
247 FALSE), /* pcrel_offset */
249 /* A standard 16 bit relocation. */
250 HOWTO (R_PPC64_ADDR16, /* type */
252 1, /* size (0 = byte, 1 = short, 2 = long) */
254 FALSE, /* pc_relative */
256 complain_overflow_bitfield, /* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC64_ADDR16", /* name */
259 FALSE, /* partial_inplace */
261 0xffff, /* dst_mask */
262 FALSE), /* pcrel_offset */
264 /* A 16 bit relocation without overflow. */
265 HOWTO (R_PPC64_ADDR16_LO, /* type */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
269 FALSE, /* pc_relative */
271 complain_overflow_dont,/* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC64_ADDR16_LO", /* name */
274 FALSE, /* partial_inplace */
276 0xffff, /* dst_mask */
277 FALSE), /* pcrel_offset */
279 /* Bits 16-31 of an address. */
280 HOWTO (R_PPC64_ADDR16_HI, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE, /* pc_relative */
286 complain_overflow_dont, /* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR16_HI", /* name */
289 FALSE, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
294 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
295 bits, treated as a signed number, is negative. */
296 HOWTO (R_PPC64_ADDR16_HA, /* type */
298 1, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_dont, /* complain_on_overflow */
303 ppc64_elf_ha_reloc, /* special_function */
304 "R_PPC64_ADDR16_HA", /* name */
305 FALSE, /* partial_inplace */
307 0xffff, /* dst_mask */
308 FALSE), /* pcrel_offset */
310 /* An absolute 16 bit branch; the lower two bits must be zero.
311 FIXME: we don't check that, we just clear them. */
312 HOWTO (R_PPC64_ADDR14, /* type */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
316 FALSE, /* pc_relative */
318 complain_overflow_bitfield, /* complain_on_overflow */
319 ppc64_elf_branch_reloc, /* special_function */
320 "R_PPC64_ADDR14", /* name */
321 FALSE, /* partial_inplace */
323 0x0000fffc, /* dst_mask */
324 FALSE), /* pcrel_offset */
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is expected to be taken. The lower two
328 bits must be zero. */
329 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE, /* pc_relative */
335 complain_overflow_bitfield, /* complain_on_overflow */
336 ppc64_elf_brtaken_reloc, /* special_function */
337 "R_PPC64_ADDR14_BRTAKEN",/* name */
338 FALSE, /* partial_inplace */
340 0x0000fffc, /* dst_mask */
341 FALSE), /* pcrel_offset */
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is not expected to be taken. The lower
345 two bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE, /* pc_relative */
352 complain_overflow_bitfield, /* complain_on_overflow */
353 ppc64_elf_brtaken_reloc, /* special_function */
354 "R_PPC64_ADDR14_BRNTAKEN",/* name */
355 FALSE, /* partial_inplace */
357 0x0000fffc, /* dst_mask */
358 FALSE), /* pcrel_offset */
360 /* A relative 26 bit branch; the lower two bits must be zero. */
361 HOWTO (R_PPC64_REL24, /* type */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
365 TRUE, /* pc_relative */
367 complain_overflow_signed, /* complain_on_overflow */
368 ppc64_elf_branch_reloc, /* special_function */
369 "R_PPC64_REL24", /* name */
370 FALSE, /* partial_inplace */
372 0x03fffffc, /* dst_mask */
373 TRUE), /* pcrel_offset */
375 /* A relative 16 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL14, /* type */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
380 TRUE, /* pc_relative */
382 complain_overflow_signed, /* complain_on_overflow */
383 ppc64_elf_branch_reloc, /* special_function */
384 "R_PPC64_REL14", /* name */
385 FALSE, /* partial_inplace */
387 0x0000fffc, /* dst_mask */
388 TRUE), /* pcrel_offset */
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is expected to be taken. The lower two bits must be
393 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE, /* pc_relative */
399 complain_overflow_signed, /* complain_on_overflow */
400 ppc64_elf_brtaken_reloc, /* special_function */
401 "R_PPC64_REL14_BRTAKEN", /* name */
402 FALSE, /* partial_inplace */
404 0x0000fffc, /* dst_mask */
405 TRUE), /* pcrel_offset */
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is not expected to be taken. The lower two bits must
410 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
414 TRUE, /* pc_relative */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc64_elf_brtaken_reloc, /* special_function */
418 "R_PPC64_REL14_BRNTAKEN",/* name */
419 FALSE, /* partial_inplace */
421 0x0000fffc, /* dst_mask */
422 TRUE), /* pcrel_offset */
424 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
426 HOWTO (R_PPC64_GOT16, /* type */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
430 FALSE, /* pc_relative */
432 complain_overflow_signed, /* complain_on_overflow */
433 ppc64_elf_unhandled_reloc, /* special_function */
434 "R_PPC64_GOT16", /* name */
435 FALSE, /* partial_inplace */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
440 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
442 HOWTO (R_PPC64_GOT16_LO, /* type */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
446 FALSE, /* pc_relative */
448 complain_overflow_dont, /* complain_on_overflow */
449 ppc64_elf_unhandled_reloc, /* special_function */
450 "R_PPC64_GOT16_LO", /* name */
451 FALSE, /* partial_inplace */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
456 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
458 HOWTO (R_PPC64_GOT16_HI, /* type */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
462 FALSE, /* pc_relative */
464 complain_overflow_dont,/* complain_on_overflow */
465 ppc64_elf_unhandled_reloc, /* special_function */
466 "R_PPC64_GOT16_HI", /* name */
467 FALSE, /* partial_inplace */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
472 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
474 HOWTO (R_PPC64_GOT16_HA, /* type */
476 1, /* size (0 = byte, 1 = short, 2 = long) */
478 FALSE, /* pc_relative */
480 complain_overflow_dont,/* complain_on_overflow */
481 ppc64_elf_unhandled_reloc, /* special_function */
482 "R_PPC64_GOT16_HA", /* name */
483 FALSE, /* partial_inplace */
485 0xffff, /* dst_mask */
486 FALSE), /* pcrel_offset */
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC64_COPY, /* type */
495 0, /* this one is variable size */
497 FALSE, /* pc_relative */
499 complain_overflow_dont, /* complain_on_overflow */
500 ppc64_elf_unhandled_reloc, /* special_function */
501 "R_PPC64_COPY", /* name */
502 FALSE, /* partial_inplace */
505 FALSE), /* pcrel_offset */
507 /* Like R_PPC64_ADDR64, but used when setting global offset table
509 HOWTO (R_PPC64_GLOB_DAT, /* type */
511 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
513 FALSE, /* pc_relative */
515 complain_overflow_dont, /* complain_on_overflow */
516 ppc64_elf_unhandled_reloc, /* special_function */
517 "R_PPC64_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
520 ONES (64), /* dst_mask */
521 FALSE), /* pcrel_offset */
523 /* Created by the link editor. Marks a procedure linkage table
524 entry for a symbol. */
525 HOWTO (R_PPC64_JMP_SLOT, /* type */
527 0, /* size (0 = byte, 1 = short, 2 = long) */
529 FALSE, /* pc_relative */
531 complain_overflow_dont, /* complain_on_overflow */
532 ppc64_elf_unhandled_reloc, /* special_function */
533 "R_PPC64_JMP_SLOT", /* name */
534 FALSE, /* partial_inplace */
537 FALSE), /* pcrel_offset */
539 /* Used only by the dynamic linker. When the object is run, this
540 doubleword64 is set to the load address of the object, plus the
542 HOWTO (R_PPC64_RELATIVE, /* type */
544 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
546 FALSE, /* pc_relative */
548 complain_overflow_dont, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 "R_PPC64_RELATIVE", /* name */
551 FALSE, /* partial_inplace */
553 ONES (64), /* dst_mask */
554 FALSE), /* pcrel_offset */
556 /* Like R_PPC64_ADDR32, but may be unaligned. */
557 HOWTO (R_PPC64_UADDR32, /* type */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
561 FALSE, /* pc_relative */
563 complain_overflow_bitfield, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC64_UADDR32", /* name */
566 FALSE, /* partial_inplace */
568 0xffffffff, /* dst_mask */
569 FALSE), /* pcrel_offset */
571 /* Like R_PPC64_ADDR16, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR16, /* type */
574 1, /* size (0 = byte, 1 = short, 2 = long) */
576 FALSE, /* pc_relative */
578 complain_overflow_bitfield, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC64_UADDR16", /* name */
581 FALSE, /* partial_inplace */
583 0xffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
586 /* 32-bit PC relative. */
587 HOWTO (R_PPC64_REL32, /* type */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
591 TRUE, /* pc_relative */
593 /* FIXME: Verify. Was complain_overflow_bitfield. */
594 complain_overflow_signed, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC64_REL32", /* name */
597 FALSE, /* partial_inplace */
599 0xffffffff, /* dst_mask */
600 TRUE), /* pcrel_offset */
602 /* 32-bit relocation to the symbol's procedure linkage table. */
603 HOWTO (R_PPC64_PLT32, /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 FALSE, /* pc_relative */
609 complain_overflow_bitfield, /* complain_on_overflow */
610 ppc64_elf_unhandled_reloc, /* special_function */
611 "R_PPC64_PLT32", /* name */
612 FALSE, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 FALSE), /* pcrel_offset */
617 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
618 FIXME: R_PPC64_PLTREL32 not supported. */
619 HOWTO (R_PPC64_PLTREL32, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 TRUE, /* pc_relative */
625 complain_overflow_signed, /* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_PPC64_PLTREL32", /* name */
628 FALSE, /* partial_inplace */
630 0xffffffff, /* dst_mask */
631 TRUE), /* pcrel_offset */
633 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
635 HOWTO (R_PPC64_PLT16_LO, /* type */
637 1, /* size (0 = byte, 1 = short, 2 = long) */
639 FALSE, /* pc_relative */
641 complain_overflow_dont, /* complain_on_overflow */
642 ppc64_elf_unhandled_reloc, /* special_function */
643 "R_PPC64_PLT16_LO", /* name */
644 FALSE, /* partial_inplace */
646 0xffff, /* dst_mask */
647 FALSE), /* pcrel_offset */
649 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
651 HOWTO (R_PPC64_PLT16_HI, /* type */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE, /* pc_relative */
657 complain_overflow_dont, /* complain_on_overflow */
658 ppc64_elf_unhandled_reloc, /* special_function */
659 "R_PPC64_PLT16_HI", /* name */
660 FALSE, /* partial_inplace */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
665 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
667 HOWTO (R_PPC64_PLT16_HA, /* type */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_dont, /* complain_on_overflow */
674 ppc64_elf_unhandled_reloc, /* special_function */
675 "R_PPC64_PLT16_HA", /* name */
676 FALSE, /* partial_inplace */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
681 /* 16-bit section relative relocation. */
682 HOWTO (R_PPC64_SECTOFF, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE, /* pc_relative */
688 complain_overflow_bitfield, /* complain_on_overflow */
689 ppc64_elf_sectoff_reloc, /* special_function */
690 "R_PPC64_SECTOFF", /* name */
691 FALSE, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
696 /* Like R_PPC64_SECTOFF, but no overflow warning. */
697 HOWTO (R_PPC64_SECTOFF_LO, /* type */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
701 FALSE, /* pc_relative */
703 complain_overflow_dont, /* complain_on_overflow */
704 ppc64_elf_sectoff_reloc, /* special_function */
705 "R_PPC64_SECTOFF_LO", /* name */
706 FALSE, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE), /* pcrel_offset */
711 /* 16-bit upper half section relative relocation. */
712 HOWTO (R_PPC64_SECTOFF_HI, /* type */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
716 FALSE, /* pc_relative */
718 complain_overflow_dont, /* complain_on_overflow */
719 ppc64_elf_sectoff_reloc, /* special_function */
720 "R_PPC64_SECTOFF_HI", /* name */
721 FALSE, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
726 /* 16-bit upper half adjusted section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HA, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE, /* pc_relative */
733 complain_overflow_dont, /* complain_on_overflow */
734 ppc64_elf_sectoff_ha_reloc, /* special_function */
735 "R_PPC64_SECTOFF_HA", /* name */
736 FALSE, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE), /* pcrel_offset */
741 /* Like R_PPC64_REL24 without touching the two least significant bits. */
742 HOWTO (R_PPC64_REL30, /* type */
744 2, /* size (0 = byte, 1 = short, 2 = long) */
746 TRUE, /* pc_relative */
748 complain_overflow_dont, /* complain_on_overflow */
749 bfd_elf_generic_reloc, /* special_function */
750 "R_PPC64_REL30", /* name */
751 FALSE, /* partial_inplace */
753 0xfffffffc, /* dst_mask */
754 TRUE), /* pcrel_offset */
756 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
758 /* A standard 64-bit relocation. */
759 HOWTO (R_PPC64_ADDR64, /* type */
761 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
763 FALSE, /* pc_relative */
765 complain_overflow_dont, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_PPC64_ADDR64", /* name */
768 FALSE, /* partial_inplace */
770 ONES (64), /* dst_mask */
771 FALSE), /* pcrel_offset */
773 /* The bits 32-47 of an address. */
774 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
776 1, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE, /* pc_relative */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC64_ADDR16_HIGHER", /* name */
783 FALSE, /* partial_inplace */
785 0xffff, /* dst_mask */
786 FALSE), /* pcrel_offset */
788 /* The bits 32-47 of an address, plus 1 if the contents of the low
789 16 bits, treated as a signed number, is negative. */
790 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE, /* pc_relative */
796 complain_overflow_dont, /* complain_on_overflow */
797 ppc64_elf_ha_reloc, /* special_function */
798 "R_PPC64_ADDR16_HIGHERA", /* name */
799 FALSE, /* partial_inplace */
801 0xffff, /* dst_mask */
802 FALSE), /* pcrel_offset */
804 /* The bits 48-63 of an address. */
805 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE, /* pc_relative */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_PPC64_ADDR16_HIGHEST", /* name */
814 FALSE, /* partial_inplace */
816 0xffff, /* dst_mask */
817 FALSE), /* pcrel_offset */
819 /* The bits 48-63 of an address, plus 1 if the contents of the low
820 16 bits, treated as a signed number, is negative. */
821 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
823 1, /* size (0 = byte, 1 = short, 2 = long) */
825 FALSE, /* pc_relative */
827 complain_overflow_dont, /* complain_on_overflow */
828 ppc64_elf_ha_reloc, /* special_function */
829 "R_PPC64_ADDR16_HIGHESTA", /* name */
830 FALSE, /* partial_inplace */
832 0xffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
835 /* Like ADDR64, but may be unaligned. */
836 HOWTO (R_PPC64_UADDR64, /* type */
838 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
840 FALSE, /* pc_relative */
842 complain_overflow_dont, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_PPC64_UADDR64", /* name */
845 FALSE, /* partial_inplace */
847 ONES (64), /* dst_mask */
848 FALSE), /* pcrel_offset */
850 /* 64-bit relative relocation. */
851 HOWTO (R_PPC64_REL64, /* type */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
855 TRUE, /* pc_relative */
857 complain_overflow_dont, /* complain_on_overflow */
858 bfd_elf_generic_reloc, /* special_function */
859 "R_PPC64_REL64", /* name */
860 FALSE, /* partial_inplace */
862 ONES (64), /* dst_mask */
863 TRUE), /* pcrel_offset */
865 /* 64-bit relocation to the symbol's procedure linkage table. */
866 HOWTO (R_PPC64_PLT64, /* type */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
870 FALSE, /* pc_relative */
872 complain_overflow_dont, /* complain_on_overflow */
873 ppc64_elf_unhandled_reloc, /* special_function */
874 "R_PPC64_PLT64", /* name */
875 FALSE, /* partial_inplace */
877 ONES (64), /* dst_mask */
878 FALSE), /* pcrel_offset */
880 /* 64-bit PC relative relocation to the symbol's procedure linkage
882 /* FIXME: R_PPC64_PLTREL64 not supported. */
883 HOWTO (R_PPC64_PLTREL64, /* type */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
887 TRUE, /* pc_relative */
889 complain_overflow_dont, /* complain_on_overflow */
890 ppc64_elf_unhandled_reloc, /* special_function */
891 "R_PPC64_PLTREL64", /* name */
892 FALSE, /* partial_inplace */
894 ONES (64), /* dst_mask */
895 TRUE), /* pcrel_offset */
897 /* 16 bit TOC-relative relocation. */
899 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
900 HOWTO (R_PPC64_TOC16, /* type */
902 1, /* size (0 = byte, 1 = short, 2 = long) */
904 FALSE, /* pc_relative */
906 complain_overflow_signed, /* complain_on_overflow */
907 ppc64_elf_toc_reloc, /* special_function */
908 "R_PPC64_TOC16", /* name */
909 FALSE, /* partial_inplace */
911 0xffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
914 /* 16 bit TOC-relative relocation without overflow. */
916 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
917 HOWTO (R_PPC64_TOC16_LO, /* type */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE, /* pc_relative */
923 complain_overflow_dont, /* complain_on_overflow */
924 ppc64_elf_toc_reloc, /* special_function */
925 "R_PPC64_TOC16_LO", /* name */
926 FALSE, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE), /* pcrel_offset */
931 /* 16 bit TOC-relative relocation, high 16 bits. */
933 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_HI, /* type */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
938 FALSE, /* pc_relative */
940 complain_overflow_dont, /* complain_on_overflow */
941 ppc64_elf_toc_reloc, /* special_function */
942 "R_PPC64_TOC16_HI", /* name */
943 FALSE, /* partial_inplace */
945 0xffff, /* dst_mask */
946 FALSE), /* pcrel_offset */
948 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
949 contents of the low 16 bits, treated as a signed number, is
952 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
953 HOWTO (R_PPC64_TOC16_HA, /* type */
955 1, /* size (0 = byte, 1 = short, 2 = long) */
957 FALSE, /* pc_relative */
959 complain_overflow_dont, /* complain_on_overflow */
960 ppc64_elf_toc_ha_reloc, /* special_function */
961 "R_PPC64_TOC16_HA", /* name */
962 FALSE, /* partial_inplace */
964 0xffff, /* dst_mask */
965 FALSE), /* pcrel_offset */
967 /* 64-bit relocation; insert value of TOC base (.TOC.). */
969 /* R_PPC64_TOC 51 doubleword64 .TOC. */
970 HOWTO (R_PPC64_TOC, /* type */
972 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
974 FALSE, /* pc_relative */
976 complain_overflow_bitfield, /* complain_on_overflow */
977 ppc64_elf_toc64_reloc, /* special_function */
978 "R_PPC64_TOC", /* name */
979 FALSE, /* partial_inplace */
981 ONES (64), /* dst_mask */
982 FALSE), /* pcrel_offset */
984 /* Like R_PPC64_GOT16, but also informs the link editor that the
985 value to relocate may (!) refer to a PLT entry which the link
986 editor (a) may replace with the symbol value. If the link editor
987 is unable to fully resolve the symbol, it may (b) create a PLT
988 entry and store the address to the new PLT entry in the GOT.
989 This permits lazy resolution of function symbols at run time.
990 The link editor may also skip all of this and just (c) emit a
991 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
992 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
993 HOWTO (R_PPC64_PLTGOT16, /* type */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
997 FALSE, /* pc_relative */
999 complain_overflow_signed, /* complain_on_overflow */
1000 ppc64_elf_unhandled_reloc, /* special_function */
1001 "R_PPC64_PLTGOT16", /* name */
1002 FALSE, /* partial_inplace */
1004 0xffff, /* dst_mask */
1005 FALSE), /* pcrel_offset */
1007 /* Like R_PPC64_PLTGOT16, but without overflow. */
1008 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1009 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 FALSE, /* pc_relative */
1015 complain_overflow_dont, /* complain_on_overflow */
1016 ppc64_elf_unhandled_reloc, /* special_function */
1017 "R_PPC64_PLTGOT16_LO", /* name */
1018 FALSE, /* partial_inplace */
1020 0xffff, /* dst_mask */
1021 FALSE), /* pcrel_offset */
1023 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1024 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1025 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 FALSE, /* pc_relative */
1031 complain_overflow_dont, /* complain_on_overflow */
1032 ppc64_elf_unhandled_reloc, /* special_function */
1033 "R_PPC64_PLTGOT16_HI", /* name */
1034 FALSE, /* partial_inplace */
1036 0xffff, /* dst_mask */
1037 FALSE), /* pcrel_offset */
1039 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1040 1 if the contents of the low 16 bits, treated as a signed number,
1042 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1043 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 FALSE, /* pc_relative */
1049 complain_overflow_dont,/* complain_on_overflow */
1050 ppc64_elf_unhandled_reloc, /* special_function */
1051 "R_PPC64_PLTGOT16_HA", /* name */
1052 FALSE, /* partial_inplace */
1054 0xffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1057 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_ADDR16_DS, /* type */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE, /* pc_relative */
1064 complain_overflow_bitfield, /* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_PPC64_ADDR16_DS", /* name */
1067 FALSE, /* partial_inplace */
1069 0xfffc, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1072 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_dont,/* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_ADDR16_LO_DS",/* name */
1082 FALSE, /* partial_inplace */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1087 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_GOT16_DS, /* type */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE, /* pc_relative */
1094 complain_overflow_signed, /* complain_on_overflow */
1095 ppc64_elf_unhandled_reloc, /* special_function */
1096 "R_PPC64_GOT16_DS", /* name */
1097 FALSE, /* partial_inplace */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1102 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE, /* pc_relative */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc, /* special_function */
1111 "R_PPC64_GOT16_LO_DS", /* name */
1112 FALSE, /* partial_inplace */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1117 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE, /* pc_relative */
1124 complain_overflow_dont, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc, /* special_function */
1126 "R_PPC64_PLT16_LO_DS", /* name */
1127 FALSE, /* partial_inplace */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1132 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE, /* pc_relative */
1139 complain_overflow_bitfield, /* complain_on_overflow */
1140 ppc64_elf_sectoff_reloc, /* special_function */
1141 "R_PPC64_SECTOFF_DS", /* name */
1142 FALSE, /* partial_inplace */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1147 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE, /* pc_relative */
1154 complain_overflow_dont, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc, /* special_function */
1156 "R_PPC64_SECTOFF_LO_DS",/* name */
1157 FALSE, /* partial_inplace */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1162 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_TOC16_DS, /* type */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_signed, /* complain_on_overflow */
1170 ppc64_elf_toc_reloc, /* special_function */
1171 "R_PPC64_TOC16_DS", /* name */
1172 FALSE, /* partial_inplace */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE, /* pc_relative */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc, /* special_function */
1186 "R_PPC64_TOC16_LO_DS", /* name */
1187 FALSE, /* partial_inplace */
1189 0xfffc, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1192 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1193 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1194 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 FALSE, /* pc_relative */
1200 complain_overflow_signed, /* complain_on_overflow */
1201 ppc64_elf_unhandled_reloc, /* special_function */
1202 "R_PPC64_PLTGOT16_DS", /* name */
1203 FALSE, /* partial_inplace */
1205 0xfffc, /* dst_mask */
1206 FALSE), /* pcrel_offset */
1208 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1209 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1210 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1212 1, /* size (0 = byte, 1 = short, 2 = long) */
1214 FALSE, /* pc_relative */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 ppc64_elf_unhandled_reloc, /* special_function */
1218 "R_PPC64_PLTGOT16_LO_DS",/* name */
1219 FALSE, /* partial_inplace */
1221 0xfffc, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1224 /* Marker reloc for TLS. */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 FALSE, /* pc_relative */
1231 complain_overflow_dont, /* complain_on_overflow */
1232 bfd_elf_generic_reloc, /* special_function */
1233 "R_PPC64_TLS", /* name */
1234 FALSE, /* partial_inplace */
1237 FALSE), /* pcrel_offset */
1239 /* Computes the load module index of the load module that contains the
1240 definition of its TLS sym. */
1241 HOWTO (R_PPC64_DTPMOD64,
1243 4, /* size (0 = byte, 1 = short, 2 = long) */
1245 FALSE, /* pc_relative */
1247 complain_overflow_dont, /* complain_on_overflow */
1248 ppc64_elf_unhandled_reloc, /* special_function */
1249 "R_PPC64_DTPMOD64", /* name */
1250 FALSE, /* partial_inplace */
1252 ONES (64), /* dst_mask */
1253 FALSE), /* pcrel_offset */
1255 /* Computes a dtv-relative displacement, the difference between the value
1256 of sym+add and the base address of the thread-local storage block that
1257 contains the definition of sym, minus 0x8000. */
1258 HOWTO (R_PPC64_DTPREL64,
1260 4, /* size (0 = byte, 1 = short, 2 = long) */
1262 FALSE, /* pc_relative */
1264 complain_overflow_dont, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_DTPREL64", /* name */
1267 FALSE, /* partial_inplace */
1269 ONES (64), /* dst_mask */
1270 FALSE), /* pcrel_offset */
1272 /* A 16 bit dtprel reloc. */
1273 HOWTO (R_PPC64_DTPREL16,
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1277 FALSE, /* pc_relative */
1279 complain_overflow_signed, /* complain_on_overflow */
1280 ppc64_elf_unhandled_reloc, /* special_function */
1281 "R_PPC64_DTPREL16", /* name */
1282 FALSE, /* partial_inplace */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1287 /* Like DTPREL16, but no overflow. */
1288 HOWTO (R_PPC64_DTPREL16_LO,
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1292 FALSE, /* pc_relative */
1294 complain_overflow_dont, /* complain_on_overflow */
1295 ppc64_elf_unhandled_reloc, /* special_function */
1296 "R_PPC64_DTPREL16_LO", /* name */
1297 FALSE, /* partial_inplace */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1302 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1303 HOWTO (R_PPC64_DTPREL16_HI,
1304 16, /* rightshift */
1305 1, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE, /* pc_relative */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc, /* special_function */
1311 "R_PPC64_DTPREL16_HI", /* name */
1312 FALSE, /* partial_inplace */
1314 0xffff, /* dst_mask */
1315 FALSE), /* pcrel_offset */
1317 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1318 HOWTO (R_PPC64_DTPREL16_HA,
1319 16, /* rightshift */
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE, /* pc_relative */
1324 complain_overflow_dont, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc, /* special_function */
1326 "R_PPC64_DTPREL16_HA", /* name */
1327 FALSE, /* partial_inplace */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1332 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1333 HOWTO (R_PPC64_DTPREL16_HIGHER,
1334 32, /* rightshift */
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 FALSE, /* pc_relative */
1339 complain_overflow_dont, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc, /* special_function */
1341 "R_PPC64_DTPREL16_HIGHER", /* name */
1342 FALSE, /* partial_inplace */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1347 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1349 32, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 FALSE, /* pc_relative */
1354 complain_overflow_dont, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc, /* special_function */
1356 "R_PPC64_DTPREL16_HIGHERA", /* name */
1357 FALSE, /* partial_inplace */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1362 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1364 48, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE, /* pc_relative */
1369 complain_overflow_dont, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc, /* special_function */
1371 "R_PPC64_DTPREL16_HIGHEST", /* name */
1372 FALSE, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1377 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1379 48, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 FALSE, /* pc_relative */
1384 complain_overflow_dont, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1387 FALSE, /* partial_inplace */
1389 0xffff, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1392 /* Like DTPREL16, but for insns with a DS field. */
1393 HOWTO (R_PPC64_DTPREL16_DS,
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE, /* pc_relative */
1399 complain_overflow_signed, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_DS", /* name */
1402 FALSE, /* partial_inplace */
1404 0xfffc, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1407 /* Like DTPREL16_DS, but no overflow. */
1408 HOWTO (R_PPC64_DTPREL16_LO_DS,
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 FALSE, /* pc_relative */
1414 complain_overflow_dont, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc, /* special_function */
1416 "R_PPC64_DTPREL16_LO_DS", /* name */
1417 FALSE, /* partial_inplace */
1419 0xfffc, /* dst_mask */
1420 FALSE), /* pcrel_offset */
1422 /* Computes a tp-relative displacement, the difference between the value of
1423 sym+add and the value of the thread pointer (r13). */
1424 HOWTO (R_PPC64_TPREL64,
1426 4, /* size (0 = byte, 1 = short, 2 = long) */
1428 FALSE, /* pc_relative */
1430 complain_overflow_dont, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_TPREL64", /* name */
1433 FALSE, /* partial_inplace */
1435 ONES (64), /* dst_mask */
1436 FALSE), /* pcrel_offset */
1438 /* A 16 bit tprel reloc. */
1439 HOWTO (R_PPC64_TPREL16,
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 FALSE, /* pc_relative */
1445 complain_overflow_signed, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_TPREL16", /* name */
1448 FALSE, /* partial_inplace */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1453 /* Like TPREL16, but no overflow. */
1454 HOWTO (R_PPC64_TPREL16_LO,
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 FALSE, /* pc_relative */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc, /* special_function */
1462 "R_PPC64_TPREL16_LO", /* name */
1463 FALSE, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1468 /* Like TPREL16_LO, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_TPREL16_HI,
1470 16, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE, /* pc_relative */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_TPREL16_HI", /* name */
1478 FALSE, /* partial_inplace */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1483 /* Like TPREL16_HI, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_TPREL16_HA,
1485 16, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE, /* pc_relative */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_TPREL16_HA", /* name */
1493 FALSE, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1498 /* Like TPREL16_HI, but next higher group of 16 bits. */
1499 HOWTO (R_PPC64_TPREL16_HIGHER,
1500 32, /* rightshift */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE, /* pc_relative */
1505 complain_overflow_dont, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_TPREL16_HIGHER", /* name */
1508 FALSE, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1513 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HIGHERA,
1515 32, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE, /* pc_relative */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_TPREL16_HIGHERA", /* name */
1523 FALSE, /* partial_inplace */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1528 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HIGHEST,
1530 48, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1533 FALSE, /* pc_relative */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc, /* special_function */
1537 "R_PPC64_TPREL16_HIGHEST", /* name */
1538 FALSE, /* partial_inplace */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1543 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1545 48, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 FALSE, /* pc_relative */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_HIGHESTA", /* name */
1553 FALSE, /* partial_inplace */
1555 0xffff, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1558 /* Like TPREL16, but for insns with a DS field. */
1559 HOWTO (R_PPC64_TPREL16_DS,
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE, /* pc_relative */
1565 complain_overflow_signed, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_DS", /* name */
1568 FALSE, /* partial_inplace */
1570 0xfffc, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1573 /* Like TPREL16_DS, but no overflow. */
1574 HOWTO (R_PPC64_TPREL16_LO_DS,
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE, /* pc_relative */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc, /* special_function */
1582 "R_PPC64_TPREL16_LO_DS", /* name */
1583 FALSE, /* partial_inplace */
1585 0xfffc, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1588 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1589 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1590 to the first entry relative to the TOC base (r2). */
1591 HOWTO (R_PPC64_GOT_TLSGD16,
1593 1, /* size (0 = byte, 1 = short, 2 = long) */
1595 FALSE, /* pc_relative */
1597 complain_overflow_signed, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc, /* special_function */
1599 "R_PPC64_GOT_TLSGD16", /* name */
1600 FALSE, /* partial_inplace */
1602 0xffff, /* dst_mask */
1603 FALSE), /* pcrel_offset */
1605 /* Like GOT_TLSGD16, but no overflow. */
1606 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1608 1, /* size (0 = byte, 1 = short, 2 = long) */
1610 FALSE, /* pc_relative */
1612 complain_overflow_dont, /* complain_on_overflow */
1613 ppc64_elf_unhandled_reloc, /* special_function */
1614 "R_PPC64_GOT_TLSGD16_LO", /* name */
1615 FALSE, /* partial_inplace */
1617 0xffff, /* dst_mask */
1618 FALSE), /* pcrel_offset */
1620 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1621 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1622 16, /* rightshift */
1623 1, /* size (0 = byte, 1 = short, 2 = long) */
1625 FALSE, /* pc_relative */
1627 complain_overflow_dont, /* complain_on_overflow */
1628 ppc64_elf_unhandled_reloc, /* special_function */
1629 "R_PPC64_GOT_TLSGD16_HI", /* name */
1630 FALSE, /* partial_inplace */
1632 0xffff, /* dst_mask */
1633 FALSE), /* pcrel_offset */
1635 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1636 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1637 16, /* rightshift */
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE, /* pc_relative */
1642 complain_overflow_dont, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc, /* special_function */
1644 "R_PPC64_GOT_TLSGD16_HA", /* name */
1645 FALSE, /* partial_inplace */
1647 0xffff, /* dst_mask */
1648 FALSE), /* pcrel_offset */
1650 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1651 with values (sym+add)@dtpmod and zero, and computes the offset to the
1652 first entry relative to the TOC base (r2). */
1653 HOWTO (R_PPC64_GOT_TLSLD16,
1655 1, /* size (0 = byte, 1 = short, 2 = long) */
1657 FALSE, /* pc_relative */
1659 complain_overflow_signed, /* complain_on_overflow */
1660 ppc64_elf_unhandled_reloc, /* special_function */
1661 "R_PPC64_GOT_TLSLD16", /* name */
1662 FALSE, /* partial_inplace */
1664 0xffff, /* dst_mask */
1665 FALSE), /* pcrel_offset */
1667 /* Like GOT_TLSLD16, but no overflow. */
1668 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1670 1, /* size (0 = byte, 1 = short, 2 = long) */
1672 FALSE, /* pc_relative */
1674 complain_overflow_dont, /* complain_on_overflow */
1675 ppc64_elf_unhandled_reloc, /* special_function */
1676 "R_PPC64_GOT_TLSLD16_LO", /* name */
1677 FALSE, /* partial_inplace */
1679 0xffff, /* dst_mask */
1680 FALSE), /* pcrel_offset */
1682 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1683 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1684 16, /* rightshift */
1685 1, /* size (0 = byte, 1 = short, 2 = long) */
1687 FALSE, /* pc_relative */
1689 complain_overflow_dont, /* complain_on_overflow */
1690 ppc64_elf_unhandled_reloc, /* special_function */
1691 "R_PPC64_GOT_TLSLD16_HI", /* name */
1692 FALSE, /* partial_inplace */
1694 0xffff, /* dst_mask */
1695 FALSE), /* pcrel_offset */
1697 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1698 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1699 16, /* rightshift */
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE, /* pc_relative */
1704 complain_overflow_dont, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc, /* special_function */
1706 "R_PPC64_GOT_TLSLD16_HA", /* name */
1707 FALSE, /* partial_inplace */
1709 0xffff, /* dst_mask */
1710 FALSE), /* pcrel_offset */
1712 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1713 the offset to the entry relative to the TOC base (r2). */
1714 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1716 1, /* size (0 = byte, 1 = short, 2 = long) */
1718 FALSE, /* pc_relative */
1720 complain_overflow_signed, /* complain_on_overflow */
1721 ppc64_elf_unhandled_reloc, /* special_function */
1722 "R_PPC64_GOT_DTPREL16_DS", /* name */
1723 FALSE, /* partial_inplace */
1725 0xfffc, /* dst_mask */
1726 FALSE), /* pcrel_offset */
1728 /* Like GOT_DTPREL16_DS, but no overflow. */
1729 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1731 1, /* size (0 = byte, 1 = short, 2 = long) */
1733 FALSE, /* pc_relative */
1735 complain_overflow_dont, /* complain_on_overflow */
1736 ppc64_elf_unhandled_reloc, /* special_function */
1737 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1738 FALSE, /* partial_inplace */
1740 0xfffc, /* dst_mask */
1741 FALSE), /* pcrel_offset */
1743 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1744 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1745 16, /* rightshift */
1746 1, /* size (0 = byte, 1 = short, 2 = long) */
1748 FALSE, /* pc_relative */
1750 complain_overflow_dont, /* complain_on_overflow */
1751 ppc64_elf_unhandled_reloc, /* special_function */
1752 "R_PPC64_GOT_DTPREL16_HI", /* name */
1753 FALSE, /* partial_inplace */
1755 0xffff, /* dst_mask */
1756 FALSE), /* pcrel_offset */
1758 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1759 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1760 16, /* rightshift */
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE, /* pc_relative */
1765 complain_overflow_dont, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_HA", /* name */
1768 FALSE, /* partial_inplace */
1770 0xffff, /* dst_mask */
1771 FALSE), /* pcrel_offset */
1773 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1774 offset to the entry relative to the TOC base (r2). */
1775 HOWTO (R_PPC64_GOT_TPREL16_DS,
1777 1, /* size (0 = byte, 1 = short, 2 = long) */
1779 FALSE, /* pc_relative */
1781 complain_overflow_signed, /* complain_on_overflow */
1782 ppc64_elf_unhandled_reloc, /* special_function */
1783 "R_PPC64_GOT_TPREL16_DS", /* name */
1784 FALSE, /* partial_inplace */
1786 0xfffc, /* dst_mask */
1787 FALSE), /* pcrel_offset */
1789 /* Like GOT_TPREL16_DS, but no overflow. */
1790 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1792 1, /* size (0 = byte, 1 = short, 2 = long) */
1794 FALSE, /* pc_relative */
1796 complain_overflow_dont, /* complain_on_overflow */
1797 ppc64_elf_unhandled_reloc, /* special_function */
1798 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1799 FALSE, /* partial_inplace */
1801 0xfffc, /* dst_mask */
1802 FALSE), /* pcrel_offset */
1804 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1805 HOWTO (R_PPC64_GOT_TPREL16_HI,
1806 16, /* rightshift */
1807 1, /* size (0 = byte, 1 = short, 2 = long) */
1809 FALSE, /* pc_relative */
1811 complain_overflow_dont, /* complain_on_overflow */
1812 ppc64_elf_unhandled_reloc, /* special_function */
1813 "R_PPC64_GOT_TPREL16_HI", /* name */
1814 FALSE, /* partial_inplace */
1816 0xffff, /* dst_mask */
1817 FALSE), /* pcrel_offset */
1819 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1820 HOWTO (R_PPC64_GOT_TPREL16_HA,
1821 16, /* rightshift */
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE, /* pc_relative */
1826 complain_overflow_dont, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc, /* special_function */
1828 "R_PPC64_GOT_TPREL16_HA", /* name */
1829 FALSE, /* partial_inplace */
1831 0xffff, /* dst_mask */
1832 FALSE), /* pcrel_offset */
1834 /* GNU extension to record C++ vtable hierarchy. */
1835 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1837 0, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE, /* pc_relative */
1841 complain_overflow_dont, /* complain_on_overflow */
1842 NULL, /* special_function */
1843 "R_PPC64_GNU_VTINHERIT", /* name */
1844 FALSE, /* partial_inplace */
1847 FALSE), /* pcrel_offset */
1849 /* GNU extension to record C++ vtable member usage. */
1850 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1852 0, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE, /* pc_relative */
1856 complain_overflow_dont, /* complain_on_overflow */
1857 NULL, /* special_function */
1858 "R_PPC64_GNU_VTENTRY", /* name */
1859 FALSE, /* partial_inplace */
1862 FALSE), /* pcrel_offset */
1866 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1870 ppc_howto_init (void)
1872 unsigned int i, type;
1875 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1878 type = ppc64_elf_howto_raw[i].type;
1879 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1880 / sizeof (ppc64_elf_howto_table[0])));
1881 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1885 static reloc_howto_type *
1886 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1887 bfd_reloc_code_real_type code)
1889 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1891 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1892 /* Initialize howto table if needed. */
1900 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1902 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1904 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1906 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1908 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1910 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1912 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1914 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1916 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1918 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1920 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1922 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1924 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1926 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1928 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1930 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1932 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1934 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1936 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1938 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1940 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1942 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1944 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1946 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1948 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1950 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1952 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1954 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1956 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1958 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1960 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1962 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1964 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1966 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1968 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1970 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1972 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1974 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1976 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1978 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1980 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1982 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1984 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1986 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1988 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1990 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1992 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1994 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1996 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1998 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2000 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2002 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2004 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2006 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2008 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2010 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2012 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2014 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2016 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2018 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2020 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2022 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2024 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2026 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2028 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2030 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2032 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2034 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2036 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2038 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2040 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2042 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2044 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2046 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2048 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2050 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2052 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2054 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2056 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2058 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2060 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2062 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2064 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2066 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2068 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2070 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2072 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2074 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2076 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2078 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2080 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2082 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2084 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2086 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2088 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2090 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2092 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2094 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2096 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2098 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2100 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2104 return ppc64_elf_howto_table[r];
2107 /* Set the howto pointer for a PowerPC ELF reloc. */
2110 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2111 Elf_Internal_Rela *dst)
2115 /* Initialize howto table if needed. */
2116 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2119 type = ELF64_R_TYPE (dst->r_info);
2120 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2121 / sizeof (ppc64_elf_howto_table[0])));
2122 cache_ptr->howto = ppc64_elf_howto_table[type];
2125 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2127 static bfd_reloc_status_type
2128 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2129 void *data, asection *input_section,
2130 bfd *output_bfd, char **error_message)
2132 /* If this is a relocatable link (output_bfd test tells us), just
2133 call the generic function. Any adjustment will be done at final
2135 if (output_bfd != NULL)
2136 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2137 input_section, output_bfd, error_message);
2139 /* Adjust the addend for sign extension of the low 16 bits.
2140 We won't actually be using the low 16 bits, so trashing them
2142 reloc_entry->addend += 0x8000;
2143 return bfd_reloc_continue;
2146 static bfd_reloc_status_type
2147 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2148 void *data, asection *input_section,
2149 bfd *output_bfd, char **error_message)
2151 if (output_bfd != NULL)
2152 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2153 input_section, output_bfd, error_message);
2155 if (strcmp (symbol->section->name, ".opd") == 0
2156 && (symbol->section->owner->flags & DYNAMIC) == 0)
2158 bfd_vma dest = opd_entry_value (symbol->section,
2159 symbol->value + reloc_entry->addend,
2161 if (dest != (bfd_vma) -1)
2162 reloc_entry->addend = dest - (symbol->value
2163 + symbol->section->output_section->vma
2164 + symbol->section->output_offset);
2166 return bfd_reloc_continue;
2169 static bfd_reloc_status_type
2170 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2171 void *data, asection *input_section,
2172 bfd *output_bfd, char **error_message)
2175 enum elf_ppc64_reloc_type r_type;
2176 bfd_size_type octets;
2177 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2178 bfd_boolean is_power4 = FALSE;
2180 /* If this is a relocatable link (output_bfd test tells us), just
2181 call the generic function. Any adjustment will be done at final
2183 if (output_bfd != NULL)
2184 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2185 input_section, output_bfd, error_message);
2187 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2188 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2189 insn &= ~(0x01 << 21);
2190 r_type = reloc_entry->howto->type;
2191 if (r_type == R_PPC64_ADDR14_BRTAKEN
2192 || r_type == R_PPC64_REL14_BRTAKEN)
2193 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2197 /* Set 'a' bit. This is 0b00010 in BO field for branch
2198 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2199 for branch on CTR insns (BO == 1a00t or 1a01t). */
2200 if ((insn & (0x14 << 21)) == (0x04 << 21))
2202 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2212 if (!bfd_is_com_section (symbol->section))
2213 target = symbol->value;
2214 target += symbol->section->output_section->vma;
2215 target += symbol->section->output_offset;
2216 target += reloc_entry->addend;
2218 from = (reloc_entry->address
2219 + input_section->output_offset
2220 + input_section->output_section->vma);
2222 /* Invert 'y' bit if not the default. */
2223 if ((bfd_signed_vma) (target - from) < 0)
2226 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2228 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2229 input_section, output_bfd, error_message);
2232 static bfd_reloc_status_type
2233 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2234 void *data, asection *input_section,
2235 bfd *output_bfd, char **error_message)
2237 /* If this is a relocatable link (output_bfd test tells us), just
2238 call the generic function. Any adjustment will be done at final
2240 if (output_bfd != NULL)
2241 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2242 input_section, output_bfd, error_message);
2244 /* Subtract the symbol section base address. */
2245 reloc_entry->addend -= symbol->section->output_section->vma;
2246 return bfd_reloc_continue;
2249 static bfd_reloc_status_type
2250 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2251 void *data, asection *input_section,
2252 bfd *output_bfd, char **error_message)
2254 /* If this is a relocatable link (output_bfd test tells us), just
2255 call the generic function. Any adjustment will be done at final
2257 if (output_bfd != NULL)
2258 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2259 input_section, output_bfd, error_message);
2261 /* Subtract the symbol section base address. */
2262 reloc_entry->addend -= symbol->section->output_section->vma;
2264 /* Adjust the addend for sign extension of the low 16 bits. */
2265 reloc_entry->addend += 0x8000;
2266 return bfd_reloc_continue;
2269 static bfd_reloc_status_type
2270 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2271 void *data, asection *input_section,
2272 bfd *output_bfd, char **error_message)
2276 /* If this is a relocatable link (output_bfd test tells us), just
2277 call the generic function. Any adjustment will be done at final
2279 if (output_bfd != NULL)
2280 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2281 input_section, output_bfd, error_message);
2283 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2285 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2287 /* Subtract the TOC base address. */
2288 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2289 return bfd_reloc_continue;
2292 static bfd_reloc_status_type
2293 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2294 void *data, asection *input_section,
2295 bfd *output_bfd, char **error_message)
2299 /* If this is a relocatable link (output_bfd test tells us), just
2300 call the generic function. Any adjustment will be done at final
2302 if (output_bfd != NULL)
2303 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2304 input_section, output_bfd, error_message);
2306 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2308 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2310 /* Subtract the TOC base address. */
2311 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2313 /* Adjust the addend for sign extension of the low 16 bits. */
2314 reloc_entry->addend += 0x8000;
2315 return bfd_reloc_continue;
2318 static bfd_reloc_status_type
2319 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2320 void *data, asection *input_section,
2321 bfd *output_bfd, char **error_message)
2324 bfd_size_type octets;
2326 /* If this is a relocatable link (output_bfd test tells us), just
2327 call the generic function. Any adjustment will be done at final
2329 if (output_bfd != NULL)
2330 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2331 input_section, output_bfd, error_message);
2333 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2335 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2337 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2338 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2339 return bfd_reloc_ok;
2342 static bfd_reloc_status_type
2343 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2344 void *data, asection *input_section,
2345 bfd *output_bfd, char **error_message)
2347 /* If this is a relocatable link (output_bfd test tells us), just
2348 call the generic function. Any adjustment will be done at final
2350 if (output_bfd != NULL)
2351 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2352 input_section, output_bfd, error_message);
2354 if (error_message != NULL)
2356 static char buf[60];
2357 sprintf (buf, "generic linker can't handle %s",
2358 reloc_entry->howto->name);
2359 *error_message = buf;
2361 return bfd_reloc_dangerous;
2364 struct ppc64_elf_obj_tdata
2366 struct elf_obj_tdata elf;
2368 /* Shortcuts to dynamic linker sections. */
2372 /* Used during garbage collection. We attach global symbols defined
2373 on removed .opd entries to this section so that the sym is removed. */
2374 asection *deleted_section;
2376 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2377 sections means we potentially need one of these for each input bfd. */
2379 bfd_signed_vma refcount;
2383 /* A copy of relocs before they are modified for --emit-relocs. */
2384 Elf_Internal_Rela *opd_relocs;
2387 #define ppc64_elf_tdata(bfd) \
2388 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2390 #define ppc64_tlsld_got(bfd) \
2391 (&ppc64_elf_tdata (bfd)->tlsld_got)
2393 /* Override the generic function because we store some extras. */
2396 ppc64_elf_mkobject (bfd *abfd)
2398 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2399 abfd->tdata.any = bfd_zalloc (abfd, amt);
2400 if (abfd->tdata.any == NULL)
2405 /* Return 1 if target is one of ours. */
2408 is_ppc64_elf_target (const struct bfd_target *targ)
2410 extern const bfd_target bfd_elf64_powerpc_vec;
2411 extern const bfd_target bfd_elf64_powerpcle_vec;
2413 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2416 /* Fix bad default arch selected for a 64 bit input bfd when the
2417 default is 32 bit. */
2420 ppc64_elf_object_p (bfd *abfd)
2422 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2424 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2426 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2428 /* Relies on arch after 32 bit default being 64 bit default. */
2429 abfd->arch_info = abfd->arch_info->next;
2430 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2436 /* Support for core dump NOTE sections. */
2439 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2441 size_t offset, size;
2443 if (note->descsz != 504)
2447 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2450 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2456 /* Make a ".reg/999" section. */
2457 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2458 size, note->descpos + offset);
2462 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2464 if (note->descsz != 136)
2467 elf_tdata (abfd)->core_program
2468 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2469 elf_tdata (abfd)->core_command
2470 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2475 /* Merge backend specific data from an object file to the output
2476 object file when linking. */
2479 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2481 /* Check if we have the same endianess. */
2482 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2483 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2484 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2488 if (bfd_big_endian (ibfd))
2489 msg = _("%B: compiled for a big endian system "
2490 "and target is little endian");
2492 msg = _("%B: compiled for a little endian system "
2493 "and target is big endian");
2495 (*_bfd_error_handler) (msg, ibfd);
2497 bfd_set_error (bfd_error_wrong_format);
2504 /* Add extra PPC sections. */
2506 static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2508 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2509 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2510 { ".plt", 4, 0, SHT_NOBITS, 0 },
2511 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2512 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2513 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2514 { NULL, 0, 0, 0, 0 }
2517 struct _ppc64_elf_section_data
2519 struct bfd_elf_section_data elf;
2521 /* An array with one entry for each opd function descriptor. */
2524 /* Points to the function code section for local opd entries. */
2525 asection **func_sec;
2526 /* After editing .opd, adjust references to opd local syms. */
2530 /* An array for toc sections, indexed by offset/8.
2531 Specifies the relocation symbol index used at a given toc offset. */
2535 #define ppc64_elf_section_data(sec) \
2536 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2539 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2541 struct _ppc64_elf_section_data *sdata;
2542 bfd_size_type amt = sizeof (*sdata);
2544 sdata = bfd_zalloc (abfd, amt);
2547 sec->used_by_bfd = sdata;
2549 return _bfd_elf_new_section_hook (abfd, sec);
2553 get_opd_info (asection * sec)
2556 && ppc64_elf_section_data (sec) != NULL
2557 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2558 return ppc64_elf_section_data (sec)->opd.adjust;
2562 /* Parameters for the qsort hook. */
2563 static asection *synthetic_opd;
2564 static bfd_boolean synthetic_relocatable;
2566 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2569 compare_symbols (const void *ap, const void *bp)
2571 const asymbol *a = * (const asymbol **) ap;
2572 const asymbol *b = * (const asymbol **) bp;
2574 /* Section symbols first. */
2575 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2577 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2580 /* then .opd symbols. */
2581 if (a->section == synthetic_opd && b->section != synthetic_opd)
2583 if (a->section != synthetic_opd && b->section == synthetic_opd)
2586 /* then other code symbols. */
2587 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2588 == (SEC_CODE | SEC_ALLOC)
2589 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2590 != (SEC_CODE | SEC_ALLOC))
2593 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2594 != (SEC_CODE | SEC_ALLOC)
2595 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2596 == (SEC_CODE | SEC_ALLOC))
2599 if (synthetic_relocatable)
2601 if (a->section->id < b->section->id)
2604 if (a->section->id > b->section->id)
2608 if (a->value + a->section->vma < b->value + b->section->vma)
2611 if (a->value + a->section->vma > b->value + b->section->vma)
2617 /* Search SYMS for a symbol of the given VALUE. */
2620 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2628 mid = (lo + hi) >> 1;
2629 if (syms[mid]->value + syms[mid]->section->vma < value)
2631 else if (syms[mid]->value + syms[mid]->section->vma > value)
2641 mid = (lo + hi) >> 1;
2642 if (syms[mid]->section->id < id)
2644 else if (syms[mid]->section->id > id)
2646 else if (syms[mid]->value < value)
2648 else if (syms[mid]->value > value)
2657 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2661 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2662 long static_count, asymbol **static_syms,
2663 long dyn_count, asymbol **dyn_syms,
2670 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2672 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2677 opd = bfd_get_section_by_name (abfd, ".opd");
2681 symcount = static_count;
2683 symcount += dyn_count;
2687 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2691 if (!relocatable && static_count != 0 && dyn_count != 0)
2693 /* Use both symbol tables. */
2694 memcpy (syms, static_syms, static_count * sizeof (*syms));
2695 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2697 else if (!relocatable && static_count == 0)
2698 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2700 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2702 synthetic_opd = opd;
2703 synthetic_relocatable = relocatable;
2704 qsort (syms, symcount, sizeof (*syms), compare_symbols);
2706 if (!relocatable && symcount > 1)
2709 /* Trim duplicate syms, since we may have merged the normal and
2710 dynamic symbols. Actually, we only care about syms that have
2711 different values, so trim any with the same value. */
2712 for (i = 1, j = 1; i < symcount; ++i)
2713 if (syms[i - 1]->value + syms[i - 1]->section->vma
2714 != syms[i]->value + syms[i]->section->vma)
2715 syms[j++] = syms[i];
2720 if (syms[i]->section == opd)
2724 for (; i < symcount; ++i)
2725 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2726 != (SEC_CODE | SEC_ALLOC))
2727 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2731 for (; i < symcount; ++i)
2732 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2736 for (; i < symcount; ++i)
2737 if (syms[i]->section != opd)
2741 for (; i < symcount; ++i)
2742 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2743 != (SEC_CODE | SEC_ALLOC))
2748 if (opdsymend == secsymend)
2753 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2758 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2759 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2763 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2770 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2774 while (r < opd->relocation + relcount
2775 && r->address < syms[i]->value + opd->vma)
2778 if (r == opd->relocation + relcount)
2781 if (r->address != syms[i]->value + opd->vma)
2784 if (r->howto->type != R_PPC64_ADDR64)
2787 sym = *r->sym_ptr_ptr;
2788 if (!sym_exists_at (syms, opdsymend, symcount,
2789 sym->section->id, sym->value + r->addend))
2792 size += sizeof (asymbol);
2793 size += strlen (syms[i]->name) + 2;
2797 s = *ret = bfd_malloc (size);
2804 names = (char *) (s + count);
2806 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2810 while (r < opd->relocation + relcount
2811 && r->address < syms[i]->value + opd->vma)
2814 if (r == opd->relocation + relcount)
2817 if (r->address != syms[i]->value + opd->vma)
2820 if (r->howto->type != R_PPC64_ADDR64)
2823 sym = *r->sym_ptr_ptr;
2824 if (!sym_exists_at (syms, opdsymend, symcount,
2825 sym->section->id, sym->value + r->addend))
2830 s->section = sym->section;
2831 s->value = sym->value + r->addend;
2834 len = strlen (syms[i]->name);
2835 memcpy (names, syms[i]->name, len + 1);
2846 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2850 free_contents_and_exit:
2858 for (i = secsymend; i < opdsymend; ++i)
2862 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2863 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2866 size += sizeof (asymbol);
2867 size += strlen (syms[i]->name) + 2;
2871 s = *ret = bfd_malloc (size);
2873 goto free_contents_and_exit;
2875 names = (char *) (s + count);
2877 for (i = secsymend; i < opdsymend; ++i)
2881 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2882 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2886 asection *sec = abfd->sections;
2893 long mid = (lo + hi) >> 1;
2894 if (syms[mid]->section->vma < ent)
2896 else if (syms[mid]->section->vma > ent)
2900 sec = syms[mid]->section;
2905 if (lo >= hi && lo > codesecsym)
2906 sec = syms[lo - 1]->section;
2908 for (; sec != NULL; sec = sec->next)
2912 if ((sec->flags & SEC_ALLOC) == 0
2913 || (sec->flags & SEC_LOAD) == 0)
2915 if ((sec->flags & SEC_CODE) != 0)
2918 s->value = ent - s->section->vma;
2921 len = strlen (syms[i]->name);
2922 memcpy (names, syms[i]->name, len + 1);
2935 /* The following functions are specific to the ELF linker, while
2936 functions above are used generally. Those named ppc64_elf_* are
2937 called by the main ELF linker code. They appear in this file more
2938 or less in the order in which they are called. eg.
2939 ppc64_elf_check_relocs is called early in the link process,
2940 ppc64_elf_finish_dynamic_sections is one of the last functions
2943 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2944 functions have both a function code symbol and a function descriptor
2945 symbol. A call to foo in a relocatable object file looks like:
2952 The function definition in another object file might be:
2956 . .quad .TOC.@tocbase
2962 When the linker resolves the call during a static link, the branch
2963 unsurprisingly just goes to .foo and the .opd information is unused.
2964 If the function definition is in a shared library, things are a little
2965 different: The call goes via a plt call stub, the opd information gets
2966 copied to the plt, and the linker patches the nop.
2974 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2975 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2976 . std 2,40(1) # this is the general idea
2984 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2986 The "reloc ()" notation is supposed to indicate that the linker emits
2987 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2990 What are the difficulties here? Well, firstly, the relocations
2991 examined by the linker in check_relocs are against the function code
2992 sym .foo, while the dynamic relocation in the plt is emitted against
2993 the function descriptor symbol, foo. Somewhere along the line, we need
2994 to carefully copy dynamic link information from one symbol to the other.
2995 Secondly, the generic part of the elf linker will make .foo a dynamic
2996 symbol as is normal for most other backends. We need foo dynamic
2997 instead, at least for an application final link. However, when
2998 creating a shared library containing foo, we need to have both symbols
2999 dynamic so that references to .foo are satisfied during the early
3000 stages of linking. Otherwise the linker might decide to pull in a
3001 definition from some other object, eg. a static library.
3003 Update: As of August 2004, we support a new convention. Function
3004 calls may use the function descriptor symbol, ie. "bl foo". This
3005 behaves exactly as "bl .foo". */
3007 /* The linker needs to keep track of the number of relocs that it
3008 decides to copy as dynamic relocs in check_relocs for each symbol.
3009 This is so that it can later discard them if they are found to be
3010 unnecessary. We store the information in a field extending the
3011 regular ELF linker hash table. */
3013 struct ppc_dyn_relocs
3015 struct ppc_dyn_relocs *next;
3017 /* The input section of the reloc. */
3020 /* Total number of relocs copied for the input section. */
3021 bfd_size_type count;
3023 /* Number of pc-relative relocs copied for the input section. */
3024 bfd_size_type pc_count;
3027 /* Track GOT entries needed for a given symbol. We might need more
3028 than one got entry per symbol. */
3031 struct got_entry *next;
3033 /* The symbol addend that we'll be placing in the GOT. */
3036 /* Unlike other ELF targets, we use separate GOT entries for the same
3037 symbol referenced from different input files. This is to support
3038 automatic multiple TOC/GOT sections, where the TOC base can vary
3039 from one input file to another.
3041 Point to the BFD owning this GOT entry. */
3044 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3045 TLS_TPREL or TLS_DTPREL for tls entries. */
3048 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3051 bfd_signed_vma refcount;
3056 /* The same for PLT. */
3059 struct plt_entry *next;
3065 bfd_signed_vma refcount;
3070 /* Of those relocs that might be copied as dynamic relocs, this macro
3071 selects those that must be copied when linking a shared library,
3072 even when the symbol is local. */
3074 #define MUST_BE_DYN_RELOC(RTYPE) \
3075 ((RTYPE) != R_PPC64_REL32 \
3076 && (RTYPE) != R_PPC64_REL64 \
3077 && (RTYPE) != R_PPC64_REL30)
3079 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3080 copying dynamic variables from a shared lib into an app's dynbss
3081 section, and instead use a dynamic relocation to point into the
3082 shared lib. With code that gcc generates, it's vital that this be
3083 enabled; In the PowerPC64 ABI, the address of a function is actually
3084 the address of a function descriptor, which resides in the .opd
3085 section. gcc uses the descriptor directly rather than going via the
3086 GOT as some other ABI's do, which means that initialized function
3087 pointers must reference the descriptor. Thus, a function pointer
3088 initialized to the address of a function in a shared library will
3089 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3090 redefines the function descriptor symbol to point to the copy. This
3091 presents a problem as a plt entry for that function is also
3092 initialized from the function descriptor symbol and the copy reloc
3093 may not be initialized first. */
3094 #define ELIMINATE_COPY_RELOCS 1
3096 /* Section name for stubs is the associated section name plus this
3098 #define STUB_SUFFIX ".stub"
3101 ppc_stub_long_branch:
3102 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3103 destination, but a 24 bit branch in a stub section will reach.
3106 ppc_stub_plt_branch:
3107 Similar to the above, but a 24 bit branch in the stub section won't
3108 reach its destination.
3109 . addis %r12,%r2,xxx@toc@ha
3110 . ld %r11,xxx@toc@l(%r12)
3115 Used to call a function in a shared library. If it so happens that
3116 the plt entry referenced crosses a 64k boundary, then an extra
3117 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3118 xxx+16 as appropriate.
3119 . addis %r12,%r2,xxx@toc@ha
3121 . ld %r11,xxx+0@toc@l(%r12)
3122 . ld %r2,xxx+8@toc@l(%r12)
3124 . ld %r11,xxx+16@toc@l(%r12)
3127 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3128 code to adjust the value and save r2 to support multiple toc sections.
3129 A ppc_stub_long_branch with an r2 offset looks like:
3131 . addis %r2,%r2,off@ha
3132 . addi %r2,%r2,off@l
3135 A ppc_stub_plt_branch with an r2 offset looks like:
3137 . addis %r12,%r2,xxx@toc@ha
3138 . ld %r11,xxx@toc@l(%r12)
3139 . addis %r2,%r2,off@ha
3140 . addi %r2,%r2,off@l
3145 enum ppc_stub_type {
3147 ppc_stub_long_branch,
3148 ppc_stub_long_branch_r2off,
3149 ppc_stub_plt_branch,
3150 ppc_stub_plt_branch_r2off,
3154 struct ppc_stub_hash_entry {
3156 /* Base hash table entry structure. */
3157 struct bfd_hash_entry root;
3159 enum ppc_stub_type stub_type;
3161 /* The stub section. */
3164 /* Offset within stub_sec of the beginning of this stub. */
3165 bfd_vma stub_offset;
3167 /* Given the symbol's value and its section we can determine its final
3168 value when building the stubs (so the stub knows where to jump. */
3169 bfd_vma target_value;
3170 asection *target_section;
3172 /* The symbol table entry, if any, that this was derived from. */
3173 struct ppc_link_hash_entry *h;
3175 /* And the reloc addend that this was derived from. */
3178 /* Where this stub is being called from, or, in the case of combined
3179 stub sections, the first input section in the group. */
3183 struct ppc_branch_hash_entry {
3185 /* Base hash table entry structure. */
3186 struct bfd_hash_entry root;
3188 /* Offset within .branch_lt. */
3189 unsigned int offset;
3191 /* Generation marker. */
3195 struct ppc_link_hash_entry
3197 struct elf_link_hash_entry elf;
3199 /* A pointer to the most recently used stub hash entry against this
3201 struct ppc_stub_hash_entry *stub_cache;
3203 /* Track dynamic relocs copied for this symbol. */
3204 struct ppc_dyn_relocs *dyn_relocs;
3206 /* Link between function code and descriptor symbols. */
3207 struct ppc_link_hash_entry *oh;
3209 /* Flag function code and descriptor symbols. */
3210 unsigned int is_func:1;
3211 unsigned int is_func_descriptor:1;
3212 unsigned int fake:1;
3214 /* Whether global opd/toc sym has been adjusted or not.
3215 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3216 should be set for all globals defined in any opd/toc section. */
3217 unsigned int adjust_done:1;
3219 /* Set if we twiddled this symbol to weak at some stage. */
3220 unsigned int was_undefined:1;
3222 /* Contexts in which symbol is used in the GOT (or TOC).
3223 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3224 corresponding relocs are encountered during check_relocs.
3225 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3226 indicate the corresponding GOT entry type is not needed.
3227 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3228 a TPREL one. We use a separate flag rather than setting TPREL
3229 just for convenience in distinguishing the two cases. */
3230 #define TLS_GD 1 /* GD reloc. */
3231 #define TLS_LD 2 /* LD reloc. */
3232 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3233 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3234 #define TLS_TLS 16 /* Any TLS reloc. */
3235 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3236 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3240 /* ppc64 ELF linker hash table. */
3242 struct ppc_link_hash_table
3244 struct elf_link_hash_table elf;
3246 /* The stub hash table. */
3247 struct bfd_hash_table stub_hash_table;
3249 /* Another hash table for plt_branch stubs. */
3250 struct bfd_hash_table branch_hash_table;
3252 /* Linker stub bfd. */
3255 /* Linker call-backs. */
3256 asection * (*add_stub_section) (const char *, asection *);
3257 void (*layout_sections_again) (void);
3259 /* Array to keep track of which stub sections have been created, and
3260 information on stub grouping. */
3262 /* This is the section to which stubs in the group will be attached. */
3264 /* The stub section. */
3266 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3270 /* Temp used when calculating TOC pointers. */
3273 /* Highest input section id. */
3276 /* Highest output section index. */
3279 /* List of input sections for each output section. */
3280 asection **input_list;
3282 /* Short-cuts to get to dynamic linker sections. */
3293 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3294 struct ppc_link_hash_entry *tls_get_addr;
3295 struct ppc_link_hash_entry *tls_get_addr_fd;
3298 unsigned long stub_count[ppc_stub_plt_call];
3300 /* Number of stubs against global syms. */
3301 unsigned long stub_globals;
3303 /* Set if we should emit symbols for stubs. */
3304 unsigned int emit_stub_syms:1;
3306 /* Support for multiple toc sections. */
3307 unsigned int no_multi_toc:1;
3308 unsigned int multi_toc_needed:1;
3311 unsigned int stub_error:1;
3313 /* Flag set when small branches are detected. Used to
3314 select suitable defaults for the stub group size. */
3315 unsigned int has_14bit_branch:1;
3317 /* Temp used by ppc64_elf_check_directives. */
3318 unsigned int twiddled_syms:1;
3320 /* Incremented every time we size stubs. */
3321 unsigned int stub_iteration;
3323 /* Small local sym to section mapping cache. */
3324 struct sym_sec_cache sym_sec;
3327 /* Rename some of the generic section flags to better document how they
3329 #define has_toc_reloc has_gp_reloc
3330 #define makes_toc_func_call need_finalize_relax
3331 #define call_check_in_progress reloc_done
3333 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3335 #define ppc_hash_table(p) \
3336 ((struct ppc_link_hash_table *) ((p)->hash))
3338 #define ppc_stub_hash_lookup(table, string, create, copy) \
3339 ((struct ppc_stub_hash_entry *) \
3340 bfd_hash_lookup ((table), (string), (create), (copy)))
3342 #define ppc_branch_hash_lookup(table, string, create, copy) \
3343 ((struct ppc_branch_hash_entry *) \
3344 bfd_hash_lookup ((table), (string), (create), (copy)))
3346 /* Create an entry in the stub hash table. */
3348 static struct bfd_hash_entry *
3349 stub_hash_newfunc (struct bfd_hash_entry *entry,
3350 struct bfd_hash_table *table,
3353 /* Allocate the structure if it has not already been allocated by a
3357 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3362 /* Call the allocation method of the superclass. */
3363 entry = bfd_hash_newfunc (entry, table, string);
3366 struct ppc_stub_hash_entry *eh;
3368 /* Initialize the local fields. */
3369 eh = (struct ppc_stub_hash_entry *) entry;
3370 eh->stub_type = ppc_stub_none;
3371 eh->stub_sec = NULL;
3372 eh->stub_offset = 0;
3373 eh->target_value = 0;
3374 eh->target_section = NULL;
3382 /* Create an entry in the branch hash table. */
3384 static struct bfd_hash_entry *
3385 branch_hash_newfunc (struct bfd_hash_entry *entry,
3386 struct bfd_hash_table *table,
3389 /* Allocate the structure if it has not already been allocated by a
3393 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3398 /* Call the allocation method of the superclass. */
3399 entry = bfd_hash_newfunc (entry, table, string);
3402 struct ppc_branch_hash_entry *eh;
3404 /* Initialize the local fields. */
3405 eh = (struct ppc_branch_hash_entry *) entry;
3413 /* Create an entry in a ppc64 ELF linker hash table. */
3415 static struct bfd_hash_entry *
3416 link_hash_newfunc (struct bfd_hash_entry *entry,
3417 struct bfd_hash_table *table,
3420 /* Allocate the structure if it has not already been allocated by a
3424 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3429 /* Call the allocation method of the superclass. */
3430 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3433 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3435 memset (&eh->stub_cache, 0,
3436 (sizeof (struct ppc_link_hash_entry)
3437 - offsetof (struct ppc_link_hash_entry, stub_cache)));
3443 /* Create a ppc64 ELF linker hash table. */
3445 static struct bfd_link_hash_table *
3446 ppc64_elf_link_hash_table_create (bfd *abfd)
3448 struct ppc_link_hash_table *htab;
3449 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3451 htab = bfd_zmalloc (amt);
3455 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3461 /* Init the stub hash table too. */
3462 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3465 /* And the branch hash table. */
3466 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3469 /* Initializing two fields of the union is just cosmetic. We really
3470 only care about glist, but when compiled on a 32-bit host the
3471 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3472 debugger inspection of these fields look nicer. */
3473 htab->elf.init_refcount.refcount = 0;
3474 htab->elf.init_refcount.glist = NULL;
3475 htab->elf.init_offset.offset = 0;
3476 htab->elf.init_offset.glist = NULL;
3478 return &htab->elf.root;
3481 /* Free the derived linker hash table. */
3484 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3486 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3488 bfd_hash_table_free (&ret->stub_hash_table);
3489 bfd_hash_table_free (&ret->branch_hash_table);
3490 _bfd_generic_link_hash_table_free (hash);
3493 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3496 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3498 struct ppc_link_hash_table *htab;
3500 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3502 /* Always hook our dynamic sections into the first bfd, which is the
3503 linker created stub bfd. This ensures that the GOT header is at
3504 the start of the output TOC section. */
3505 htab = ppc_hash_table (info);
3506 htab->stub_bfd = abfd;
3507 htab->elf.dynobj = abfd;
3510 /* Build a name for an entry in the stub hash table. */
3513 ppc_stub_name (const asection *input_section,
3514 const asection *sym_sec,
3515 const struct ppc_link_hash_entry *h,
3516 const Elf_Internal_Rela *rel)
3521 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3522 offsets from a sym as a branch target? In fact, we could
3523 probably assume the addend is always zero. */
3524 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3528 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3529 stub_name = bfd_malloc (len);
3530 if (stub_name != NULL)
3532 sprintf (stub_name, "%08x.%s+%x",
3533 input_section->id & 0xffffffff,
3534 h->elf.root.root.string,
3535 (int) rel->r_addend & 0xffffffff);
3540 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3541 stub_name = bfd_malloc (len);
3542 if (stub_name != NULL)
3544 sprintf (stub_name, "%08x.%x:%x+%x",
3545 input_section->id & 0xffffffff,
3546 sym_sec->id & 0xffffffff,
3547 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3548 (int) rel->r_addend & 0xffffffff);
3551 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3552 stub_name[len - 2] = 0;
3556 /* Look up an entry in the stub hash. Stub entries are cached because
3557 creating the stub name takes a bit of time. */
3559 static struct ppc_stub_hash_entry *
3560 ppc_get_stub_entry (const asection *input_section,
3561 const asection *sym_sec,
3562 struct ppc_link_hash_entry *h,
3563 const Elf_Internal_Rela *rel,
3564 struct ppc_link_hash_table *htab)
3566 struct ppc_stub_hash_entry *stub_entry;
3567 const asection *id_sec;
3569 /* If this input section is part of a group of sections sharing one
3570 stub section, then use the id of the first section in the group.
3571 Stub names need to include a section id, as there may well be
3572 more than one stub used to reach say, printf, and we need to
3573 distinguish between them. */
3574 id_sec = htab->stub_group[input_section->id].link_sec;
3576 if (h != NULL && h->stub_cache != NULL
3577 && h->stub_cache->h == h
3578 && h->stub_cache->id_sec == id_sec)
3580 stub_entry = h->stub_cache;
3586 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3587 if (stub_name == NULL)
3590 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3591 stub_name, FALSE, FALSE);
3593 h->stub_cache = stub_entry;
3601 /* Add a new stub entry to the stub hash. Not all fields of the new
3602 stub entry are initialised. */
3604 static struct ppc_stub_hash_entry *
3605 ppc_add_stub (const char *stub_name,
3607 struct ppc_link_hash_table *htab)
3611 struct ppc_stub_hash_entry *stub_entry;
3613 link_sec = htab->stub_group[section->id].link_sec;
3614 stub_sec = htab->stub_group[section->id].stub_sec;
3615 if (stub_sec == NULL)
3617 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3618 if (stub_sec == NULL)
3624 namelen = strlen (link_sec->name);
3625 len = namelen + sizeof (STUB_SUFFIX);
3626 s_name = bfd_alloc (htab->stub_bfd, len);
3630 memcpy (s_name, link_sec->name, namelen);
3631 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3632 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3633 if (stub_sec == NULL)
3635 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3637 htab->stub_group[section->id].stub_sec = stub_sec;
3640 /* Enter this entry into the linker stub hash table. */
3641 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3643 if (stub_entry == NULL)
3645 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3646 section->owner, stub_name);
3650 stub_entry->stub_sec = stub_sec;
3651 stub_entry->stub_offset = 0;
3652 stub_entry->id_sec = link_sec;
3656 /* Create sections for linker generated code. */
3659 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3661 struct ppc_link_hash_table *htab;
3664 htab = ppc_hash_table (info);
3666 /* Create .sfpr for code to save and restore fp regs. */
3667 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3668 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3669 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3671 if (htab->sfpr == NULL
3672 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3675 /* Create .glink for lazy dynamic linking support. */
3676 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3678 if (htab->glink == NULL
3679 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3682 /* Create .branch_lt for plt_branch stubs. */
3683 flags = (SEC_ALLOC | SEC_LOAD
3684 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3685 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3687 if (htab->brlt == NULL
3688 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3691 if (info->shared || info->emitrelocations)
3693 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3694 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3695 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3699 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3705 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3706 not already done. */
3709 create_got_section (bfd *abfd, struct bfd_link_info *info)
3711 asection *got, *relgot;
3713 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3717 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3720 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3725 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3726 | SEC_LINKER_CREATED);
3728 got = bfd_make_section_with_flags (abfd, ".got", flags);
3730 || !bfd_set_section_alignment (abfd, got, 3))
3733 relgot = bfd_make_section_with_flags (abfd, ".rela.got",
3734 flags | SEC_READONLY);
3736 || ! bfd_set_section_alignment (abfd, relgot, 3))
3739 ppc64_elf_tdata (abfd)->got = got;
3740 ppc64_elf_tdata (abfd)->relgot = relgot;
3744 /* Create the dynamic sections, and set up shortcuts. */
3747 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3749 struct ppc_link_hash_table *htab;
3751 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3754 htab = ppc_hash_table (info);
3756 htab->got = bfd_get_section_by_name (dynobj, ".got");
3757 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3758 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3759 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3761 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3763 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3764 || (!info->shared && !htab->relbss))
3770 /* Merge PLT info on FROM with that on TO. */
3773 move_plt_plist (struct ppc_link_hash_entry *from,
3774 struct ppc_link_hash_entry *to)
3776 if (from->elf.plt.plist != NULL)
3778 if (to->elf.plt.plist != NULL)
3780 struct plt_entry **entp;
3781 struct plt_entry *ent;
3783 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3785 struct plt_entry *dent;
3787 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3788 if (dent->addend == ent->addend)
3790 dent->plt.refcount += ent->plt.refcount;
3797 *entp = to->elf.plt.plist;
3800 to->elf.plt.plist = from->elf.plt.plist;
3801 from->elf.plt.plist = NULL;
3805 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3808 ppc64_elf_copy_indirect_symbol
3809 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3810 struct elf_link_hash_entry *dir,
3811 struct elf_link_hash_entry *ind)
3813 struct ppc_link_hash_entry *edir, *eind;
3815 edir = (struct ppc_link_hash_entry *) dir;
3816 eind = (struct ppc_link_hash_entry *) ind;
3818 /* Copy over any dynamic relocs we may have on the indirect sym. */
3819 if (eind->dyn_relocs != NULL)
3821 if (edir->dyn_relocs != NULL)
3823 struct ppc_dyn_relocs **pp;
3824 struct ppc_dyn_relocs *p;
3826 if (eind->elf.root.type == bfd_link_hash_indirect)
3829 /* Add reloc counts against the weak sym to the strong sym
3830 list. Merge any entries against the same section. */
3831 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3833 struct ppc_dyn_relocs *q;
3835 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3836 if (q->sec == p->sec)
3838 q->pc_count += p->pc_count;
3839 q->count += p->count;
3846 *pp = edir->dyn_relocs;
3849 edir->dyn_relocs = eind->dyn_relocs;
3850 eind->dyn_relocs = NULL;
3853 edir->is_func |= eind->is_func;
3854 edir->is_func_descriptor |= eind->is_func_descriptor;
3855 edir->tls_mask |= eind->tls_mask;
3857 /* If called to transfer flags for a weakdef during processing
3858 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3859 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3860 if (!(ELIMINATE_COPY_RELOCS
3861 && eind->elf.root.type != bfd_link_hash_indirect
3862 && edir->elf.dynamic_adjusted))
3863 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3865 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3866 edir->elf.ref_regular |= eind->elf.ref_regular;
3867 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3868 edir->elf.needs_plt |= eind->elf.needs_plt;
3870 /* If we were called to copy over info for a weak sym, that's all. */
3871 if (eind->elf.root.type != bfd_link_hash_indirect)
3874 /* Copy over got entries that we may have already seen to the
3875 symbol which just became indirect. */
3876 if (eind->elf.got.glist != NULL)
3878 if (edir->elf.got.glist != NULL)
3880 struct got_entry **entp;
3881 struct got_entry *ent;
3883 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3885 struct got_entry *dent;
3887 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3888 if (dent->addend == ent->addend
3889 && dent->owner == ent->owner
3890 && dent->tls_type == ent->tls_type)
3892 dent->got.refcount += ent->got.refcount;
3899 *entp = edir->elf.got.glist;
3902 edir->elf.got.glist = eind->elf.got.glist;
3903 eind->elf.got.glist = NULL;
3906 /* And plt entries. */
3907 move_plt_plist (eind, edir);
3909 if (edir->elf.dynindx == -1)
3911 edir->elf.dynindx = eind->elf.dynindx;
3912 edir->elf.dynstr_index = eind->elf.dynstr_index;
3913 eind->elf.dynindx = -1;
3914 eind->elf.dynstr_index = 0;
3917 BFD_ASSERT (eind->elf.dynindx == -1);
3920 /* Find the function descriptor hash entry from the given function code
3921 hash entry FH. Link the entries via their OH fields. */
3923 static struct ppc_link_hash_entry *
3924 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3926 struct ppc_link_hash_entry *fdh = fh->oh;
3930 const char *fd_name = fh->elf.root.root.string + 1;
3932 fdh = (struct ppc_link_hash_entry *)
3933 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3936 fdh->is_func_descriptor = 1;
3946 /* Make a fake function descriptor sym for the code sym FH. */
3948 static struct ppc_link_hash_entry *
3949 make_fdh (struct bfd_link_info *info,
3950 struct ppc_link_hash_entry *fh)
3954 struct bfd_link_hash_entry *bh;
3955 struct ppc_link_hash_entry *fdh;
3957 abfd = fh->elf.root.u.undef.abfd;
3958 newsym = bfd_make_empty_symbol (abfd);
3959 newsym->name = fh->elf.root.root.string + 1;
3960 newsym->section = bfd_und_section_ptr;
3962 newsym->flags = BSF_WEAK;
3965 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
3966 newsym->flags, newsym->section,
3967 newsym->value, NULL, FALSE, FALSE,
3971 fdh = (struct ppc_link_hash_entry *) bh;
3972 fdh->elf.non_elf = 0;
3974 fdh->is_func_descriptor = 1;
3981 /* Hacks to support old ABI code.
3982 When making function calls, old ABI code references function entry
3983 points (dot symbols), while new ABI code references the function
3984 descriptor symbol. We need to make any combination of reference and
3985 definition work together, without breaking archive linking.
3987 For a defined function "foo" and an undefined call to "bar":
3988 An old object defines "foo" and ".foo", references ".bar" (possibly
3990 A new object defines "foo" and references "bar".
3992 A new object thus has no problem with its undefined symbols being
3993 satisfied by definitions in an old object. On the other hand, the
3994 old object won't have ".bar" satisfied by a new object. */
3996 /* Fix function descriptor symbols defined in .opd sections to be
4000 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
4001 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4002 Elf_Internal_Sym *isym,
4003 const char **name ATTRIBUTE_UNUSED,
4004 flagword *flags ATTRIBUTE_UNUSED,
4006 bfd_vma *value ATTRIBUTE_UNUSED)
4009 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
4010 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4014 /* This function makes an old ABI object reference to ".bar" cause the
4015 inclusion of a new ABI object archive that defines "bar".
4016 NAME is a symbol defined in an archive. Return a symbol in the hash
4017 table that might be satisfied by the archive symbols. */
4019 static struct elf_link_hash_entry *
4020 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4021 struct bfd_link_info *info,
4024 struct elf_link_hash_entry *h;
4028 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4030 /* Don't return this sym if it is a fake function descriptor
4031 created by add_symbol_adjust. */
4032 && !(h->root.type == bfd_link_hash_undefweak
4033 && ((struct ppc_link_hash_entry *) h)->fake))
4039 len = strlen (name);
4040 dot_name = bfd_alloc (abfd, len + 2);
4041 if (dot_name == NULL)
4042 return (struct elf_link_hash_entry *) 0 - 1;
4044 memcpy (dot_name + 1, name, len + 1);
4045 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4046 bfd_release (abfd, dot_name);
4050 /* This function satisfies all old ABI object references to ".bar" if a
4051 new ABI object defines "bar". Well, at least, undefined dot symbols
4052 are made weak. This stops later archive searches from including an
4053 object if we already have a function descriptor definition. It also
4054 prevents the linker complaining about undefined symbols.
4055 We also check and correct mismatched symbol visibility here. The
4056 most restrictive visibility of the function descriptor and the
4057 function entry symbol is used. */
4059 struct add_symbol_adjust_data
4061 struct bfd_link_info *info;
4066 add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4068 struct add_symbol_adjust_data *data;
4069 struct ppc_link_hash_table *htab;
4070 struct ppc_link_hash_entry *eh;
4071 struct ppc_link_hash_entry *fdh;
4073 if (h->root.type == bfd_link_hash_indirect)
4076 if (h->root.type == bfd_link_hash_warning)
4077 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4079 if (h->root.root.string[0] != '.')
4083 htab = ppc_hash_table (data->info);
4084 eh = (struct ppc_link_hash_entry *) h;
4085 fdh = get_fdh (eh, htab);
4087 && !data->info->relocatable
4088 && (eh->elf.root.type == bfd_link_hash_undefined
4089 || eh->elf.root.type == bfd_link_hash_undefweak)
4090 && eh->elf.ref_regular)
4092 /* Make an undefweak function descriptor sym, which is enough to
4093 pull in an --as-needed shared lib, but won't cause link
4094 errors. Archives are handled elsewhere. */
4095 fdh = make_fdh (data->info, eh);
4099 fdh->elf.ref_regular = 1;
4101 else if (fdh != NULL
4102 && (fdh->elf.root.type == bfd_link_hash_defined
4103 || fdh->elf.root.type == bfd_link_hash_defweak))
4105 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4106 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4107 if (entry_vis < descr_vis)
4108 fdh->elf.other += entry_vis - descr_vis;
4109 else if (entry_vis > descr_vis)
4110 eh->elf.other += descr_vis - entry_vis;
4112 if (eh->elf.root.type == bfd_link_hash_undefined)
4114 eh->elf.root.type = bfd_link_hash_undefweak;
4115 eh->was_undefined = 1;
4116 htab->twiddled_syms = 1;
4124 ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
4125 struct bfd_link_info *info)
4127 struct ppc_link_hash_table *htab;
4128 struct add_symbol_adjust_data data;
4130 htab = ppc_hash_table (info);
4131 if (!is_ppc64_elf_target (htab->elf.root.creator))
4136 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
4138 /* We need to fix the undefs list for any syms we have twiddled to
4140 if (htab->twiddled_syms)
4142 bfd_link_repair_undef_list (&htab->elf.root);
4143 htab->twiddled_syms = 0;
4149 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4150 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4152 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4153 char *local_got_tls_masks;
4155 if (local_got_ents == NULL)
4157 bfd_size_type size = symtab_hdr->sh_info;
4159 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4160 local_got_ents = bfd_zalloc (abfd, size);
4161 if (local_got_ents == NULL)
4163 elf_local_got_ents (abfd) = local_got_ents;
4166 if ((tls_type & TLS_EXPLICIT) == 0)
4168 struct got_entry *ent;
4170 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4171 if (ent->addend == r_addend
4172 && ent->owner == abfd
4173 && ent->tls_type == tls_type)
4177 bfd_size_type amt = sizeof (*ent);
4178 ent = bfd_alloc (abfd, amt);
4181 ent->next = local_got_ents[r_symndx];
4182 ent->addend = r_addend;
4184 ent->tls_type = tls_type;
4185 ent->got.refcount = 0;
4186 local_got_ents[r_symndx] = ent;
4188 ent->got.refcount += 1;
4191 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4192 local_got_tls_masks[r_symndx] |= tls_type;
4197 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4199 struct plt_entry *ent;
4201 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4202 if (ent->addend == addend)
4206 bfd_size_type amt = sizeof (*ent);
4207 ent = bfd_alloc (abfd, amt);
4210 ent->next = eh->elf.plt.plist;
4211 ent->addend = addend;
4212 ent->plt.refcount = 0;
4213 eh->elf.plt.plist = ent;
4215 ent->plt.refcount += 1;
4216 eh->elf.needs_plt = 1;
4217 if (eh->elf.root.root.string[0] == '.'
4218 && eh->elf.root.root.string[1] != '\0')
4223 /* Look through the relocs for a section during the first phase, and
4224 calculate needed space in the global offset table, procedure
4225 linkage table, and dynamic reloc sections. */
4228 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4229 asection *sec, const Elf_Internal_Rela *relocs)
4231 struct ppc_link_hash_table *htab;
4232 Elf_Internal_Shdr *symtab_hdr;
4233 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4234 const Elf_Internal_Rela *rel;
4235 const Elf_Internal_Rela *rel_end;
4237 asection **opd_sym_map;
4239 if (info->relocatable)
4242 /* Don't do anything special with non-loaded, non-alloced sections.
4243 In particular, any relocs in such sections should not affect GOT
4244 and PLT reference counting (ie. we don't allow them to create GOT
4245 or PLT entries), there's no possibility or desire to optimize TLS
4246 relocs, and there's not much point in propagating relocs to shared
4247 libs that the dynamic linker won't relocate. */
4248 if ((sec->flags & SEC_ALLOC) == 0)
4251 htab = ppc_hash_table (info);
4252 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4254 sym_hashes = elf_sym_hashes (abfd);
4255 sym_hashes_end = (sym_hashes
4256 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4257 - symtab_hdr->sh_info);
4261 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4263 /* Garbage collection needs some extra help with .opd sections.
4264 We don't want to necessarily keep everything referenced by
4265 relocs in .opd, as that would keep all functions. Instead,
4266 if we reference an .opd symbol (a function descriptor), we
4267 want to keep the function code symbol's section. This is
4268 easy for global symbols, but for local syms we need to keep
4269 information about the associated function section. Later, if
4270 edit_opd deletes entries, we'll use this array to adjust
4271 local syms in .opd. */
4273 asection *func_section;
4278 amt = sec->size * sizeof (union opd_info) / 8;
4279 opd_sym_map = bfd_zalloc (abfd, amt);
4280 if (opd_sym_map == NULL)
4282 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
4285 if (htab->sfpr == NULL
4286 && !create_linkage_sections (htab->elf.dynobj, info))
4289 rel_end = relocs + sec->reloc_count;
4290 for (rel = relocs; rel < rel_end; rel++)
4292 unsigned long r_symndx;
4293 struct elf_link_hash_entry *h;
4294 enum elf_ppc64_reloc_type r_type;
4297 r_symndx = ELF64_R_SYM (rel->r_info);
4298 if (r_symndx < symtab_hdr->sh_info)
4301 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4303 r_type = ELF64_R_TYPE (rel->r_info);
4306 case R_PPC64_GOT_TLSLD16:
4307 case R_PPC64_GOT_TLSLD16_LO:
4308 case R_PPC64_GOT_TLSLD16_HI:
4309 case R_PPC64_GOT_TLSLD16_HA:
4310 ppc64_tlsld_got (abfd)->refcount += 1;
4311 tls_type = TLS_TLS | TLS_LD;
4314 case R_PPC64_GOT_TLSGD16:
4315 case R_PPC64_GOT_TLSGD16_LO:
4316 case R_PPC64_GOT_TLSGD16_HI:
4317 case R_PPC64_GOT_TLSGD16_HA:
4318 tls_type = TLS_TLS | TLS_GD;
4321 case R_PPC64_GOT_TPREL16_DS:
4322 case R_PPC64_GOT_TPREL16_LO_DS:
4323 case R_PPC64_GOT_TPREL16_HI:
4324 case R_PPC64_GOT_TPREL16_HA:
4326 info->flags |= DF_STATIC_TLS;
4327 tls_type = TLS_TLS | TLS_TPREL;
4330 case R_PPC64_GOT_DTPREL16_DS:
4331 case R_PPC64_GOT_DTPREL16_LO_DS:
4332 case R_PPC64_GOT_DTPREL16_HI:
4333 case R_PPC64_GOT_DTPREL16_HA:
4334 tls_type = TLS_TLS | TLS_DTPREL;
4336 sec->has_tls_reloc = 1;
4340 case R_PPC64_GOT16_DS:
4341 case R_PPC64_GOT16_HA:
4342 case R_PPC64_GOT16_HI:
4343 case R_PPC64_GOT16_LO:
4344 case R_PPC64_GOT16_LO_DS:
4345 /* This symbol requires a global offset table entry. */
4346 sec->has_toc_reloc = 1;
4347 if (ppc64_elf_tdata (abfd)->got == NULL
4348 && !create_got_section (abfd, info))
4353 struct ppc_link_hash_entry *eh;
4354 struct got_entry *ent;
4356 eh = (struct ppc_link_hash_entry *) h;
4357 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4358 if (ent->addend == rel->r_addend
4359 && ent->owner == abfd
4360 && ent->tls_type == tls_type)
4364 bfd_size_type amt = sizeof (*ent);
4365 ent = bfd_alloc (abfd, amt);
4368 ent->next = eh->elf.got.glist;
4369 ent->addend = rel->r_addend;
4371 ent->tls_type = tls_type;
4372 ent->got.refcount = 0;
4373 eh->elf.got.glist = ent;
4375 ent->got.refcount += 1;
4376 eh->tls_mask |= tls_type;
4379 /* This is a global offset table entry for a local symbol. */
4380 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4381 rel->r_addend, tls_type))
4385 case R_PPC64_PLT16_HA:
4386 case R_PPC64_PLT16_HI:
4387 case R_PPC64_PLT16_LO:
4390 /* This symbol requires a procedure linkage table entry. We
4391 actually build the entry in adjust_dynamic_symbol,
4392 because this might be a case of linking PIC code without
4393 linking in any dynamic objects, in which case we don't
4394 need to generate a procedure linkage table after all. */
4397 /* It does not make sense to have a procedure linkage
4398 table entry for a local symbol. */
4399 bfd_set_error (bfd_error_bad_value);
4403 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4408 /* The following relocations don't need to propagate the
4409 relocation if linking a shared object since they are
4410 section relative. */
4411 case R_PPC64_SECTOFF:
4412 case R_PPC64_SECTOFF_LO:
4413 case R_PPC64_SECTOFF_HI:
4414 case R_PPC64_SECTOFF_HA:
4415 case R_PPC64_SECTOFF_DS:
4416 case R_PPC64_SECTOFF_LO_DS:
4417 case R_PPC64_DTPREL16:
4418 case R_PPC64_DTPREL16_LO:
4419 case R_PPC64_DTPREL16_HI:
4420 case R_PPC64_DTPREL16_HA:
4421 case R_PPC64_DTPREL16_DS:
4422 case R_PPC64_DTPREL16_LO_DS:
4423 case R_PPC64_DTPREL16_HIGHER:
4424 case R_PPC64_DTPREL16_HIGHERA:
4425 case R_PPC64_DTPREL16_HIGHEST:
4426 case R_PPC64_DTPREL16_HIGHESTA:
4431 case R_PPC64_TOC16_LO:
4432 case R_PPC64_TOC16_HI:
4433 case R_PPC64_TOC16_HA:
4434 case R_PPC64_TOC16_DS:
4435 case R_PPC64_TOC16_LO_DS:
4436 sec->has_toc_reloc = 1;
4439 /* This relocation describes the C++ object vtable hierarchy.
4440 Reconstruct it for later use during GC. */
4441 case R_PPC64_GNU_VTINHERIT:
4442 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4446 /* This relocation describes which C++ vtable entries are actually
4447 used. Record for later use during GC. */
4448 case R_PPC64_GNU_VTENTRY:
4449 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4454 case R_PPC64_REL14_BRTAKEN:
4455 case R_PPC64_REL14_BRNTAKEN:
4456 htab->has_14bit_branch = 1;
4462 /* We may need a .plt entry if the function this reloc
4463 refers to is in a shared lib. */
4464 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4467 if (h == &htab->tls_get_addr->elf
4468 || h == &htab->tls_get_addr_fd->elf)
4469 sec->has_tls_reloc = 1;
4470 else if (htab->tls_get_addr == NULL
4471 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
4472 && (h->root.root.string[15] == 0
4473 || h->root.root.string[15] == '@'))
4475 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4476 sec->has_tls_reloc = 1;
4478 else if (htab->tls_get_addr_fd == NULL
4479 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4480 && (h->root.root.string[14] == 0
4481 || h->root.root.string[14] == '@'))
4483 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4484 sec->has_tls_reloc = 1;
4489 case R_PPC64_TPREL64:
4490 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4492 info->flags |= DF_STATIC_TLS;
4495 case R_PPC64_DTPMOD64:
4496 if (rel + 1 < rel_end
4497 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4498 && rel[1].r_offset == rel->r_offset + 8)
4499 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4501 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4504 case R_PPC64_DTPREL64:
4505 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4507 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4508 && rel[-1].r_offset == rel->r_offset - 8)
4509 /* This is the second reloc of a dtpmod, dtprel pair.
4510 Don't mark with TLS_DTPREL. */
4514 sec->has_tls_reloc = 1;
4517 struct ppc_link_hash_entry *eh;
4518 eh = (struct ppc_link_hash_entry *) h;
4519 eh->tls_mask |= tls_type;
4522 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4523 rel->r_addend, tls_type))
4526 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4528 /* One extra to simplify get_tls_mask. */
4529 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4530 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4531 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4534 BFD_ASSERT (rel->r_offset % 8 == 0);
4535 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4537 /* Mark the second slot of a GD or LD entry.
4538 -1 to indicate GD and -2 to indicate LD. */
4539 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4540 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4541 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4542 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4545 case R_PPC64_TPREL16:
4546 case R_PPC64_TPREL16_LO:
4547 case R_PPC64_TPREL16_HI:
4548 case R_PPC64_TPREL16_HA:
4549 case R_PPC64_TPREL16_DS:
4550 case R_PPC64_TPREL16_LO_DS:
4551 case R_PPC64_TPREL16_HIGHER:
4552 case R_PPC64_TPREL16_HIGHERA:
4553 case R_PPC64_TPREL16_HIGHEST:
4554 case R_PPC64_TPREL16_HIGHESTA:
4557 info->flags |= DF_STATIC_TLS;
4562 case R_PPC64_ADDR64:
4563 if (opd_sym_map != NULL
4564 && rel + 1 < rel_end
4565 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4569 if (h->root.root.string[0] == '.'
4570 && h->root.root.string[1] != 0
4571 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4574 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4580 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4585 opd_sym_map[rel->r_offset / 8] = s;
4593 case R_PPC64_ADDR14:
4594 case R_PPC64_ADDR14_BRNTAKEN:
4595 case R_PPC64_ADDR14_BRTAKEN:
4596 case R_PPC64_ADDR16:
4597 case R_PPC64_ADDR16_DS:
4598 case R_PPC64_ADDR16_HA:
4599 case R_PPC64_ADDR16_HI:
4600 case R_PPC64_ADDR16_HIGHER:
4601 case R_PPC64_ADDR16_HIGHERA:
4602 case R_PPC64_ADDR16_HIGHEST:
4603 case R_PPC64_ADDR16_HIGHESTA:
4604 case R_PPC64_ADDR16_LO:
4605 case R_PPC64_ADDR16_LO_DS:
4606 case R_PPC64_ADDR24:
4607 case R_PPC64_ADDR32:
4608 case R_PPC64_UADDR16:
4609 case R_PPC64_UADDR32:
4610 case R_PPC64_UADDR64:
4612 if (h != NULL && !info->shared)
4613 /* We may need a copy reloc. */
4616 /* Don't propagate .opd relocs. */
4617 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4620 /* If we are creating a shared library, and this is a reloc
4621 against a global symbol, or a non PC relative reloc
4622 against a local symbol, then we need to copy the reloc
4623 into the shared library. However, if we are linking with
4624 -Bsymbolic, we do not need to copy a reloc against a
4625 global symbol which is defined in an object we are
4626 including in the link (i.e., DEF_REGULAR is set). At
4627 this point we have not seen all the input files, so it is
4628 possible that DEF_REGULAR is not set now but will be set
4629 later (it is never cleared). In case of a weak definition,
4630 DEF_REGULAR may be cleared later by a strong definition in
4631 a shared library. We account for that possibility below by
4632 storing information in the dyn_relocs field of the hash
4633 table entry. A similar situation occurs when creating
4634 shared libraries and symbol visibility changes render the
4637 If on the other hand, we are creating an executable, we
4638 may need to keep relocations for symbols satisfied by a
4639 dynamic library if we manage to avoid copy relocs for the
4643 && (MUST_BE_DYN_RELOC (r_type)
4645 && (! info->symbolic
4646 || h->root.type == bfd_link_hash_defweak
4647 || !h->def_regular))))
4648 || (ELIMINATE_COPY_RELOCS
4651 && (h->root.type == bfd_link_hash_defweak
4652 || !h->def_regular)))
4654 struct ppc_dyn_relocs *p;
4655 struct ppc_dyn_relocs **head;
4657 /* We must copy these reloc types into the output file.
4658 Create a reloc section in dynobj and make room for
4665 name = (bfd_elf_string_from_elf_section
4667 elf_elfheader (abfd)->e_shstrndx,
4668 elf_section_data (sec)->rel_hdr.sh_name));
4672 if (strncmp (name, ".rela", 5) != 0
4673 || strcmp (bfd_get_section_name (abfd, sec),
4676 (*_bfd_error_handler)
4677 (_("%B: bad relocation section name `%s\'"),
4679 bfd_set_error (bfd_error_bad_value);
4682 dynobj = htab->elf.dynobj;
4683 sreloc = bfd_get_section_by_name (dynobj, name);
4688 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4689 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4690 | SEC_ALLOC | SEC_LOAD);
4691 sreloc = bfd_make_section_with_flags (dynobj,
4695 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4698 elf_section_data (sec)->sreloc = sreloc;
4701 /* If this is a global symbol, we count the number of
4702 relocations we need for this symbol. */
4705 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4709 /* Track dynamic relocs needed for local syms too.
4710 We really need local syms available to do this
4714 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4719 head = ((struct ppc_dyn_relocs **)
4720 &elf_section_data (s)->local_dynrel);
4724 if (p == NULL || p->sec != sec)
4726 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4737 if (!MUST_BE_DYN_RELOC (r_type))
4750 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4751 of the code entry point, and its section. */
4754 opd_entry_value (asection *opd_sec,
4756 asection **code_sec,
4759 bfd *opd_bfd = opd_sec->owner;
4760 Elf_Internal_Rela *relocs;
4761 Elf_Internal_Rela *lo, *hi, *look;
4764 /* No relocs implies we are linking a --just-symbols object. */
4765 if (opd_sec->reloc_count == 0)
4769 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4770 return (bfd_vma) -1;
4772 if (code_sec != NULL)
4774 asection *sec, *likely = NULL;
4775 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4777 && (sec->flags & SEC_LOAD) != 0
4778 && (sec->flags & SEC_ALLOC) != 0)
4783 if (code_off != NULL)
4784 *code_off = val - likely->vma;
4790 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4792 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4794 /* Go find the opd reloc at the sym address. */
4796 BFD_ASSERT (lo != NULL);
4797 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4801 look = lo + (hi - lo) / 2;
4802 if (look->r_offset < offset)
4804 else if (look->r_offset > offset)
4808 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4809 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4810 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4812 unsigned long symndx = ELF64_R_SYM (look->r_info);
4815 if (symndx < symtab_hdr->sh_info)
4817 Elf_Internal_Sym *sym;
4819 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4822 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4823 symtab_hdr->sh_info,
4824 0, NULL, NULL, NULL);
4827 symtab_hdr->contents = (bfd_byte *) sym;
4831 val = sym->st_value;
4833 if ((sym->st_shndx != SHN_UNDEF
4834 && sym->st_shndx < SHN_LORESERVE)
4835 || sym->st_shndx > SHN_HIRESERVE)
4836 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4837 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4841 struct elf_link_hash_entry **sym_hashes;
4842 struct elf_link_hash_entry *rh;
4844 sym_hashes = elf_sym_hashes (opd_bfd);
4845 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4846 while (rh->root.type == bfd_link_hash_indirect
4847 || rh->root.type == bfd_link_hash_warning)
4848 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4849 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4850 || rh->root.type == bfd_link_hash_defweak);
4851 val = rh->root.u.def.value;
4852 sec = rh->root.u.def.section;
4854 val += look->r_addend;
4855 if (code_off != NULL)
4857 if (code_sec != NULL)
4859 if (sec != NULL && sec->output_section != NULL)
4860 val += sec->output_section->vma + sec->output_offset;
4869 /* Return the section that should be marked against GC for a given
4873 ppc64_elf_gc_mark_hook (asection *sec,
4874 struct bfd_link_info *info,
4875 Elf_Internal_Rela *rel,
4876 struct elf_link_hash_entry *h,
4877 Elf_Internal_Sym *sym)
4881 /* First mark all our entry sym sections. */
4882 if (info->gc_sym_list != NULL)
4884 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4885 struct bfd_sym_chain *sym = info->gc_sym_list;
4887 info->gc_sym_list = NULL;
4890 struct ppc_link_hash_entry *eh;
4892 eh = (struct ppc_link_hash_entry *)
4893 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4896 if (eh->elf.root.type != bfd_link_hash_defined
4897 && eh->elf.root.type != bfd_link_hash_defweak)
4900 if (eh->is_func_descriptor
4901 && (eh->oh->elf.root.type == bfd_link_hash_defined
4902 || eh->oh->elf.root.type == bfd_link_hash_defweak))
4903 rsec = eh->oh->elf.root.u.def.section;
4904 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4905 && opd_entry_value (eh->elf.root.u.def.section,
4906 eh->elf.root.u.def.value,
4907 &rsec, NULL) != (bfd_vma) -1)
4913 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4915 rsec = eh->elf.root.u.def.section;
4917 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4921 while (sym != NULL);
4924 /* Syms return NULL if we're marking .opd, so we avoid marking all
4925 function sections, as all functions are referenced in .opd. */
4927 if (get_opd_info (sec) != NULL)
4932 enum elf_ppc64_reloc_type r_type;
4933 struct ppc_link_hash_entry *eh;
4935 r_type = ELF64_R_TYPE (rel->r_info);
4938 case R_PPC64_GNU_VTINHERIT:
4939 case R_PPC64_GNU_VTENTRY:
4943 switch (h->root.type)
4945 case bfd_link_hash_defined:
4946 case bfd_link_hash_defweak:
4947 eh = (struct ppc_link_hash_entry *) h;
4949 && eh->oh->is_func_descriptor
4950 && (eh->oh->elf.root.type == bfd_link_hash_defined
4951 || eh->oh->elf.root.type == bfd_link_hash_defweak))
4954 /* Function descriptor syms cause the associated
4955 function code sym section to be marked. */
4956 if (eh->is_func_descriptor
4957 && (eh->oh->elf.root.type == bfd_link_hash_defined
4958 || eh->oh->elf.root.type == bfd_link_hash_defweak))
4960 /* They also mark their opd section. */
4961 if (!eh->elf.root.u.def.section->gc_mark)
4962 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4963 ppc64_elf_gc_mark_hook);
4965 rsec = eh->oh->elf.root.u.def.section;
4967 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4968 && opd_entry_value (eh->elf.root.u.def.section,
4969 eh->elf.root.u.def.value,
4970 &rsec, NULL) != (bfd_vma) -1)
4972 if (!eh->elf.root.u.def.section->gc_mark)
4973 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4974 ppc64_elf_gc_mark_hook);
4977 rsec = h->root.u.def.section;
4980 case bfd_link_hash_common:
4981 rsec = h->root.u.c.p->section;
4991 asection **opd_sym_section;
4993 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4994 opd_sym_section = get_opd_info (rsec);
4995 if (opd_sym_section != NULL)
4998 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5000 rsec = opd_sym_section[sym->st_value / 8];
5007 /* Update the .got, .plt. and dynamic reloc reference counts for the
5008 section being removed. */
5011 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5012 asection *sec, const Elf_Internal_Rela *relocs)
5014 struct ppc_link_hash_table *htab;
5015 Elf_Internal_Shdr *symtab_hdr;
5016 struct elf_link_hash_entry **sym_hashes;
5017 struct got_entry **local_got_ents;
5018 const Elf_Internal_Rela *rel, *relend;
5020 if ((sec->flags & SEC_ALLOC) == 0)
5023 elf_section_data (sec)->local_dynrel = NULL;
5025 htab = ppc_hash_table (info);
5026 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5027 sym_hashes = elf_sym_hashes (abfd);
5028 local_got_ents = elf_local_got_ents (abfd);
5030 relend = relocs + sec->reloc_count;
5031 for (rel = relocs; rel < relend; rel++)
5033 unsigned long r_symndx;
5034 enum elf_ppc64_reloc_type r_type;
5035 struct elf_link_hash_entry *h = NULL;
5038 r_symndx = ELF64_R_SYM (rel->r_info);
5039 r_type = ELF64_R_TYPE (rel->r_info);
5040 if (r_symndx >= symtab_hdr->sh_info)
5042 struct ppc_link_hash_entry *eh;
5043 struct ppc_dyn_relocs **pp;
5044 struct ppc_dyn_relocs *p;
5046 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5047 while (h->root.type == bfd_link_hash_indirect
5048 || h->root.type == bfd_link_hash_warning)
5049 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5050 eh = (struct ppc_link_hash_entry *) h;
5052 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5055 /* Everything must go for SEC. */
5063 case R_PPC64_GOT_TLSLD16:
5064 case R_PPC64_GOT_TLSLD16_LO:
5065 case R_PPC64_GOT_TLSLD16_HI:
5066 case R_PPC64_GOT_TLSLD16_HA:
5067 ppc64_tlsld_got (abfd)->refcount -= 1;
5068 tls_type = TLS_TLS | TLS_LD;
5071 case R_PPC64_GOT_TLSGD16:
5072 case R_PPC64_GOT_TLSGD16_LO:
5073 case R_PPC64_GOT_TLSGD16_HI:
5074 case R_PPC64_GOT_TLSGD16_HA:
5075 tls_type = TLS_TLS | TLS_GD;
5078 case R_PPC64_GOT_TPREL16_DS:
5079 case R_PPC64_GOT_TPREL16_LO_DS:
5080 case R_PPC64_GOT_TPREL16_HI:
5081 case R_PPC64_GOT_TPREL16_HA:
5082 tls_type = TLS_TLS | TLS_TPREL;
5085 case R_PPC64_GOT_DTPREL16_DS:
5086 case R_PPC64_GOT_DTPREL16_LO_DS:
5087 case R_PPC64_GOT_DTPREL16_HI:
5088 case R_PPC64_GOT_DTPREL16_HA:
5089 tls_type = TLS_TLS | TLS_DTPREL;
5093 case R_PPC64_GOT16_DS:
5094 case R_PPC64_GOT16_HA:
5095 case R_PPC64_GOT16_HI:
5096 case R_PPC64_GOT16_LO:
5097 case R_PPC64_GOT16_LO_DS:
5100 struct got_entry *ent;
5105 ent = local_got_ents[r_symndx];
5107 for (; ent != NULL; ent = ent->next)
5108 if (ent->addend == rel->r_addend
5109 && ent->owner == abfd
5110 && ent->tls_type == tls_type)
5114 if (ent->got.refcount > 0)
5115 ent->got.refcount -= 1;
5119 case R_PPC64_PLT16_HA:
5120 case R_PPC64_PLT16_HI:
5121 case R_PPC64_PLT16_LO:
5125 case R_PPC64_REL14_BRNTAKEN:
5126 case R_PPC64_REL14_BRTAKEN:
5130 struct plt_entry *ent;
5132 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5133 if (ent->addend == rel->r_addend)
5137 if (ent->plt.refcount > 0)
5138 ent->plt.refcount -= 1;
5149 /* The maximum size of .sfpr. */
5150 #define SFPR_MAX (218*4)
5152 struct sfpr_def_parms
5154 const char name[12];
5155 unsigned char lo, hi;
5156 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5157 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5160 /* Auto-generate _save*, _rest* functions in .sfpr. */
5163 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5165 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5167 size_t len = strlen (parm->name);
5168 bfd_boolean writing = FALSE;
5171 memcpy (sym, parm->name, len);
5174 for (i = parm->lo; i <= parm->hi; i++)
5176 struct elf_link_hash_entry *h;
5178 sym[len + 0] = i / 10 + '0';
5179 sym[len + 1] = i % 10 + '0';
5180 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5184 h->root.type = bfd_link_hash_defined;
5185 h->root.u.def.section = htab->sfpr;
5186 h->root.u.def.value = htab->sfpr->size;
5189 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5191 if (htab->sfpr->contents == NULL)
5193 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5194 if (htab->sfpr->contents == NULL)
5200 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5202 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5204 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5205 htab->sfpr->size = p - htab->sfpr->contents;
5213 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5215 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5220 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5222 p = savegpr0 (abfd, p, r);
5223 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5225 bfd_put_32 (abfd, BLR, p);
5230 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5232 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5237 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5239 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5241 p = restgpr0 (abfd, p, r);
5242 bfd_put_32 (abfd, MTLR_R0, p);
5246 p = restgpr0 (abfd, p, 30);
5247 p = restgpr0 (abfd, p, 31);
5249 bfd_put_32 (abfd, BLR, p);
5254 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5256 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5261 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5263 p = savegpr1 (abfd, p, r);
5264 bfd_put_32 (abfd, BLR, p);
5269 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5271 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5276 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5278 p = restgpr1 (abfd, p, r);
5279 bfd_put_32 (abfd, BLR, p);
5284 savefpr (bfd *abfd, bfd_byte *p, int r)
5286 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5291 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5293 p = savefpr (abfd, p, r);
5294 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5296 bfd_put_32 (abfd, BLR, p);
5301 restfpr (bfd *abfd, bfd_byte *p, int r)
5303 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5308 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5310 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5312 p = restfpr (abfd, p, r);
5313 bfd_put_32 (abfd, MTLR_R0, p);
5317 p = restfpr (abfd, p, 30);
5318 p = restfpr (abfd, p, 31);
5320 bfd_put_32 (abfd, BLR, p);
5325 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5327 p = savefpr (abfd, p, r);
5328 bfd_put_32 (abfd, BLR, p);
5333 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5335 p = restfpr (abfd, p, r);
5336 bfd_put_32 (abfd, BLR, p);
5341 savevr (bfd *abfd, bfd_byte *p, int r)
5343 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5345 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5350 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5352 p = savevr (abfd, p, r);
5353 bfd_put_32 (abfd, BLR, p);
5358 restvr (bfd *abfd, bfd_byte *p, int r)
5360 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5362 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5367 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5369 p = restvr (abfd, p, r);
5370 bfd_put_32 (abfd, BLR, p);
5374 /* Called via elf_link_hash_traverse to transfer dynamic linking
5375 information on function code symbol entries to their corresponding
5376 function descriptor symbol entries. */
5379 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5381 struct bfd_link_info *info;
5382 struct ppc_link_hash_table *htab;
5383 struct plt_entry *ent;
5384 struct ppc_link_hash_entry *fh;
5385 struct ppc_link_hash_entry *fdh;
5386 bfd_boolean force_local;
5388 fh = (struct ppc_link_hash_entry *) h;
5389 if (fh->elf.root.type == bfd_link_hash_indirect)
5392 if (fh->elf.root.type == bfd_link_hash_warning)
5393 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5396 htab = ppc_hash_table (info);
5398 /* Resolve undefined references to dot-symbols as the value
5399 in the function descriptor, if we have one in a regular object.
5400 This is to satisfy cases like ".quad .foo". Calls to functions
5401 in dynamic objects are handled elsewhere. */
5402 if (fh->elf.root.type == bfd_link_hash_undefweak
5403 && fh->was_undefined
5404 && (fh->oh->elf.root.type == bfd_link_hash_defined
5405 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5406 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5407 && opd_entry_value (fh->oh->elf.root.u.def.section,
5408 fh->oh->elf.root.u.def.value,
5409 &fh->elf.root.u.def.section,
5410 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5412 fh->elf.root.type = fh->oh->elf.root.type;
5413 fh->elf.forced_local = 1;
5416 /* If this is a function code symbol, transfer dynamic linking
5417 information to the function descriptor symbol. */
5421 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5422 if (ent->plt.refcount > 0)
5425 || fh->elf.root.root.string[0] != '.'
5426 || fh->elf.root.root.string[1] == '\0')
5429 /* Find the corresponding function descriptor symbol. Create it
5430 as undefined if necessary. */
5432 fdh = get_fdh (fh, htab);
5434 while (fdh->elf.root.type == bfd_link_hash_indirect
5435 || fdh->elf.root.type == bfd_link_hash_warning)
5436 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5440 && (fh->elf.root.type == bfd_link_hash_undefined
5441 || fh->elf.root.type == bfd_link_hash_undefweak))
5443 fdh = make_fdh (info, fh);
5448 /* Fake function descriptors are made undefweak. If the function
5449 code symbol is strong undefined, make the fake sym the same. */
5453 && fdh->elf.root.type == bfd_link_hash_undefweak
5454 && fh->elf.root.type == bfd_link_hash_undefined)
5456 fdh->elf.root.type = bfd_link_hash_undefined;
5457 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5461 && !fdh->elf.forced_local
5463 || fdh->elf.def_dynamic
5464 || fdh->elf.ref_dynamic
5465 || (fdh->elf.root.type == bfd_link_hash_undefweak
5466 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5468 if (fdh->elf.dynindx == -1)
5469 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5471 fdh->elf.ref_regular |= fh->elf.ref_regular;
5472 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5473 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5474 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
5475 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5477 move_plt_plist (fh, fdh);
5478 fdh->elf.needs_plt = 1;
5480 fdh->is_func_descriptor = 1;
5485 /* Now that the info is on the function descriptor, clear the
5486 function code sym info. Any function code syms for which we
5487 don't have a definition in a regular file, we force local.
5488 This prevents a shared library from exporting syms that have
5489 been imported from another library. Function code syms that
5490 are really in the library we must leave global to prevent the
5491 linker dragging in a definition from a static library. */
5492 force_local = (!fh->elf.def_regular
5494 || !fdh->elf.def_regular
5495 || fdh->elf.forced_local);
5496 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5501 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5502 this hook to a) provide some gcc support functions, and b) transfer
5503 dynamic linking information gathered so far on function code symbol
5504 entries, to their corresponding function descriptor symbol entries. */
5507 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5508 struct bfd_link_info *info)
5510 struct ppc_link_hash_table *htab;
5512 const struct sfpr_def_parms funcs[] =
5514 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5515 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5516 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5517 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5518 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5519 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5520 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5521 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5522 { "._savef", 14, 31, savefpr, savefpr1_tail },
5523 { "._restf", 14, 31, restfpr, restfpr1_tail },
5524 { "_savevr_", 20, 31, savevr, savevr_tail },
5525 { "_restvr_", 20, 31, restvr, restvr_tail }
5528 htab = ppc_hash_table (info);
5529 if (htab->sfpr == NULL)
5530 /* We don't have any relocs. */
5533 /* Provide any missing _save* and _rest* functions. */
5534 htab->sfpr->size = 0;
5535 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5536 if (!sfpr_define (info, &funcs[i]))
5539 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5541 if (htab->sfpr->size == 0)
5542 htab->sfpr->flags |= SEC_EXCLUDE;
5547 /* Adjust a symbol defined by a dynamic object and referenced by a
5548 regular object. The current definition is in some section of the
5549 dynamic object, but we're not including those sections. We have to
5550 change the definition to something the rest of the link can
5554 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5555 struct elf_link_hash_entry *h)
5557 struct ppc_link_hash_table *htab;
5559 unsigned int power_of_two;
5561 htab = ppc_hash_table (info);
5563 /* Deal with function syms. */
5564 if (h->type == STT_FUNC
5567 /* Clear procedure linkage table information for any symbol that
5568 won't need a .plt entry. */
5569 struct plt_entry *ent;
5570 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5571 if (ent->plt.refcount > 0)
5574 || SYMBOL_CALLS_LOCAL (info, h)
5575 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5576 && h->root.type == bfd_link_hash_undefweak))
5578 h->plt.plist = NULL;
5583 h->plt.plist = NULL;
5585 /* If this is a weak symbol, and there is a real definition, the
5586 processor independent code will have arranged for us to see the
5587 real definition first, and we can just use the same value. */
5588 if (h->u.weakdef != NULL)
5590 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5591 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5592 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5593 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5594 if (ELIMINATE_COPY_RELOCS)
5595 h->non_got_ref = h->u.weakdef->non_got_ref;
5599 /* If we are creating a shared library, we must presume that the
5600 only references to the symbol are via the global offset table.
5601 For such cases we need not do anything here; the relocations will
5602 be handled correctly by relocate_section. */
5606 /* If there are no references to this symbol that do not use the
5607 GOT, we don't need to generate a copy reloc. */
5608 if (!h->non_got_ref)
5611 if (ELIMINATE_COPY_RELOCS)
5613 struct ppc_link_hash_entry * eh;
5614 struct ppc_dyn_relocs *p;
5616 eh = (struct ppc_link_hash_entry *) h;
5617 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5619 s = p->sec->output_section;
5620 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5624 /* If we didn't find any dynamic relocs in read-only sections, then
5625 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5633 if (h->plt.plist != NULL)
5635 /* We should never get here, but unfortunately there are versions
5636 of gcc out there that improperly (for this ABI) put initialized
5637 function pointers, vtable refs and suchlike in read-only
5638 sections. Allow them to proceed, but warn that this might
5639 break at runtime. */
5640 (*_bfd_error_handler)
5641 (_("copy reloc against `%s' requires lazy plt linking; "
5642 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5643 h->root.root.string);
5646 /* This is a reference to a symbol defined by a dynamic object which
5647 is not a function. */
5649 /* We must allocate the symbol in our .dynbss section, which will
5650 become part of the .bss section of the executable. There will be
5651 an entry for this symbol in the .dynsym section. The dynamic
5652 object will contain position independent code, so all references
5653 from the dynamic object to this symbol will go through the global
5654 offset table. The dynamic linker will use the .dynsym entry to
5655 determine the address it must put in the global offset table, so
5656 both the dynamic object and the regular object will refer to the
5657 same memory location for the variable. */
5659 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5660 to copy the initial value out of the dynamic object and into the
5661 runtime process image. We need to remember the offset into the
5662 .rela.bss section we are going to use. */
5663 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5665 htab->relbss->size += sizeof (Elf64_External_Rela);
5669 /* We need to figure out the alignment required for this symbol. I
5670 have no idea how ELF linkers handle this. */
5671 power_of_two = bfd_log2 (h->size);
5672 if (power_of_two > 4)
5675 /* Apply the required alignment. */
5677 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5678 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5680 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5684 /* Define the symbol as being at this point in the section. */
5685 h->root.u.def.section = s;
5686 h->root.u.def.value = s->size;
5688 /* Increment the section size to make room for the symbol. */
5694 /* If given a function descriptor symbol, hide both the function code
5695 sym and the descriptor. */
5697 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5698 struct elf_link_hash_entry *h,
5699 bfd_boolean force_local)
5701 struct ppc_link_hash_entry *eh;
5702 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5704 eh = (struct ppc_link_hash_entry *) h;
5705 if (eh->is_func_descriptor)
5707 struct ppc_link_hash_entry *fh = eh->oh;
5712 struct ppc_link_hash_table *htab;
5715 /* We aren't supposed to use alloca in BFD because on
5716 systems which do not have alloca the version in libiberty
5717 calls xmalloc, which might cause the program to crash
5718 when it runs out of memory. This function doesn't have a
5719 return status, so there's no way to gracefully return an
5720 error. So cheat. We know that string[-1] can be safely
5721 accessed; It's either a string in an ELF string table,
5722 or allocated in an objalloc structure. */
5724 p = eh->elf.root.root.string - 1;
5727 htab = ppc_hash_table (info);
5728 fh = (struct ppc_link_hash_entry *)
5729 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5732 /* Unfortunately, if it so happens that the string we were
5733 looking for was allocated immediately before this string,
5734 then we overwrote the string terminator. That's the only
5735 reason the lookup should fail. */
5738 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5739 while (q >= eh->elf.root.root.string && *q == *p)
5741 if (q < eh->elf.root.root.string && *p == '.')
5742 fh = (struct ppc_link_hash_entry *)
5743 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5752 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5757 get_sym_h (struct elf_link_hash_entry **hp,
5758 Elf_Internal_Sym **symp,
5761 Elf_Internal_Sym **locsymsp,
5762 unsigned long r_symndx,
5765 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5767 if (r_symndx >= symtab_hdr->sh_info)
5769 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5770 struct elf_link_hash_entry *h;
5772 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5773 while (h->root.type == bfd_link_hash_indirect
5774 || h->root.type == bfd_link_hash_warning)
5775 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5783 if (symsecp != NULL)
5785 asection *symsec = NULL;
5786 if (h->root.type == bfd_link_hash_defined
5787 || h->root.type == bfd_link_hash_defweak)
5788 symsec = h->root.u.def.section;
5792 if (tls_maskp != NULL)
5794 struct ppc_link_hash_entry *eh;
5796 eh = (struct ppc_link_hash_entry *) h;
5797 *tls_maskp = &eh->tls_mask;
5802 Elf_Internal_Sym *sym;
5803 Elf_Internal_Sym *locsyms = *locsymsp;
5805 if (locsyms == NULL)
5807 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5808 if (locsyms == NULL)
5809 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5810 symtab_hdr->sh_info,
5811 0, NULL, NULL, NULL);
5812 if (locsyms == NULL)
5814 *locsymsp = locsyms;
5816 sym = locsyms + r_symndx;
5824 if (symsecp != NULL)
5826 asection *symsec = NULL;
5827 if ((sym->st_shndx != SHN_UNDEF
5828 && sym->st_shndx < SHN_LORESERVE)
5829 || sym->st_shndx > SHN_HIRESERVE)
5830 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5834 if (tls_maskp != NULL)
5836 struct got_entry **lgot_ents;
5840 lgot_ents = elf_local_got_ents (ibfd);
5841 if (lgot_ents != NULL)
5843 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5844 tls_mask = &lgot_masks[r_symndx];
5846 *tls_maskp = tls_mask;
5852 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5853 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5854 type suitable for optimization, and 1 otherwise. */
5857 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5858 Elf_Internal_Sym **locsymsp,
5859 const Elf_Internal_Rela *rel, bfd *ibfd)
5861 unsigned long r_symndx;
5863 struct elf_link_hash_entry *h;
5864 Elf_Internal_Sym *sym;
5868 r_symndx = ELF64_R_SYM (rel->r_info);
5869 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5872 if ((*tls_maskp != NULL && **tls_maskp != 0)
5874 || ppc64_elf_section_data (sec)->t_symndx == NULL)
5877 /* Look inside a TOC section too. */
5880 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5881 off = h->root.u.def.value;
5884 off = sym->st_value;
5885 off += rel->r_addend;
5886 BFD_ASSERT (off % 8 == 0);
5887 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
5888 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
5889 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5891 if (toc_symndx != NULL)
5892 *toc_symndx = r_symndx;
5894 || ((h->root.type == bfd_link_hash_defined
5895 || h->root.type == bfd_link_hash_defweak)
5896 && !h->def_dynamic))
5897 && (next_r == -1 || next_r == -2))
5902 /* Adjust all global syms defined in opd sections. In gcc generated
5903 code for the old ABI, these will already have been done. */
5906 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5908 struct ppc_link_hash_entry *eh;
5912 if (h->root.type == bfd_link_hash_indirect)
5915 if (h->root.type == bfd_link_hash_warning)
5916 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5918 if (h->root.type != bfd_link_hash_defined
5919 && h->root.type != bfd_link_hash_defweak)
5922 eh = (struct ppc_link_hash_entry *) h;
5923 if (eh->adjust_done)
5926 sym_sec = eh->elf.root.u.def.section;
5927 opd_adjust = get_opd_info (sym_sec);
5928 if (opd_adjust != NULL)
5930 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
5933 /* This entry has been deleted. */
5934 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5937 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5938 if (elf_discarded_section (dsec))
5940 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5944 eh->elf.root.u.def.value = 0;
5945 eh->elf.root.u.def.section = dsec;
5948 eh->elf.root.u.def.value += adjust;
5949 eh->adjust_done = 1;
5954 /* Handles decrementing dynamic reloc counts for the reloc specified by
5955 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
5956 have already been determined. */
5959 dec_dynrel_count (bfd_vma r_info,
5961 struct bfd_link_info *info,
5962 Elf_Internal_Sym **local_syms,
5963 struct elf_link_hash_entry *h,
5966 enum elf_ppc64_reloc_type r_type;
5967 struct ppc_dyn_relocs *p;
5968 struct ppc_dyn_relocs **pp;
5970 /* Can this reloc be dynamic? This switch, and later tests here
5971 should be kept in sync with the code in check_relocs. */
5972 r_type = ELF64_R_TYPE (r_info);
5978 case R_PPC64_TPREL16:
5979 case R_PPC64_TPREL16_LO:
5980 case R_PPC64_TPREL16_HI:
5981 case R_PPC64_TPREL16_HA:
5982 case R_PPC64_TPREL16_DS:
5983 case R_PPC64_TPREL16_LO_DS:
5984 case R_PPC64_TPREL16_HIGHER:
5985 case R_PPC64_TPREL16_HIGHERA:
5986 case R_PPC64_TPREL16_HIGHEST:
5987 case R_PPC64_TPREL16_HIGHESTA:
5991 case R_PPC64_TPREL64:
5992 case R_PPC64_DTPMOD64:
5993 case R_PPC64_DTPREL64:
5994 case R_PPC64_ADDR64:
5998 case R_PPC64_ADDR14:
5999 case R_PPC64_ADDR14_BRNTAKEN:
6000 case R_PPC64_ADDR14_BRTAKEN:
6001 case R_PPC64_ADDR16:
6002 case R_PPC64_ADDR16_DS:
6003 case R_PPC64_ADDR16_HA:
6004 case R_PPC64_ADDR16_HI:
6005 case R_PPC64_ADDR16_HIGHER:
6006 case R_PPC64_ADDR16_HIGHERA:
6007 case R_PPC64_ADDR16_HIGHEST:
6008 case R_PPC64_ADDR16_HIGHESTA:
6009 case R_PPC64_ADDR16_LO:
6010 case R_PPC64_ADDR16_LO_DS:
6011 case R_PPC64_ADDR24:
6012 case R_PPC64_ADDR32:
6013 case R_PPC64_UADDR16:
6014 case R_PPC64_UADDR32:
6015 case R_PPC64_UADDR64:
6020 if (local_syms != NULL)
6022 unsigned long r_symndx;
6023 Elf_Internal_Sym *sym;
6024 bfd *ibfd = sec->owner;
6026 r_symndx = ELF64_R_SYM (r_info);
6027 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6032 && (MUST_BE_DYN_RELOC (r_type)
6035 || h->root.type == bfd_link_hash_defweak
6036 || !h->def_regular))))
6037 || (ELIMINATE_COPY_RELOCS
6040 && (h->root.type == bfd_link_hash_defweak
6041 || !h->def_regular)))
6047 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6048 else if (sym_sec != NULL)
6049 pp = (struct ppc_dyn_relocs **) &elf_section_data (sym_sec)->local_dynrel;
6051 pp = (struct ppc_dyn_relocs **) &elf_section_data (sec)->local_dynrel;
6053 while ((p = *pp) != NULL)
6057 if (!MUST_BE_DYN_RELOC (r_type))
6067 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6069 bfd_set_error (bfd_error_bad_value);
6073 /* Remove unused Official Procedure Descriptor entries. Currently we
6074 only remove those associated with functions in discarded link-once
6075 sections, or weakly defined functions that have been overridden. It
6076 would be possible to remove many more entries for statically linked
6080 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6081 bfd_boolean non_overlapping)
6084 bfd_boolean some_edited = FALSE;
6085 asection *need_pad = NULL;
6087 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6090 Elf_Internal_Rela *relstart, *rel, *relend;
6091 Elf_Internal_Shdr *symtab_hdr;
6092 Elf_Internal_Sym *local_syms;
6093 struct elf_link_hash_entry **sym_hashes;
6097 bfd_boolean need_edit, add_aux_fields;
6098 bfd_size_type cnt_16b = 0;
6100 sec = bfd_get_section_by_name (ibfd, ".opd");
6104 amt = sec->size * sizeof (long) / 8;
6105 opd_adjust = get_opd_info (sec);
6106 if (opd_adjust == NULL)
6108 /* check_relocs hasn't been called. Must be a ld -r link
6109 or --just-symbols object. */
6110 opd_adjust = bfd_zalloc (obfd, amt);
6111 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
6113 memset (opd_adjust, 0, amt);
6115 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6118 if (sec->output_section == bfd_abs_section_ptr)
6121 /* Look through the section relocs. */
6122 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6126 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6127 sym_hashes = elf_sym_hashes (ibfd);
6129 /* Read the relocations. */
6130 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6132 if (relstart == NULL)
6135 /* First run through the relocs to check they are sane, and to
6136 determine whether we need to edit this opd section. */
6140 relend = relstart + sec->reloc_count;
6141 for (rel = relstart; rel < relend; )
6143 enum elf_ppc64_reloc_type r_type;
6144 unsigned long r_symndx;
6146 struct elf_link_hash_entry *h;
6147 Elf_Internal_Sym *sym;
6149 /* .opd contains a regular array of 16 or 24 byte entries. We're
6150 only interested in the reloc pointing to a function entry
6152 if (rel->r_offset != offset
6153 || rel + 1 >= relend
6154 || (rel + 1)->r_offset != offset + 8)
6156 /* If someone messes with .opd alignment then after a
6157 "ld -r" we might have padding in the middle of .opd.
6158 Also, there's nothing to prevent someone putting
6159 something silly in .opd with the assembler. No .opd
6160 optimization for them! */
6162 (*_bfd_error_handler)
6163 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6168 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6169 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6171 (*_bfd_error_handler)
6172 (_("%B: unexpected reloc type %u in .opd section"),
6178 r_symndx = ELF64_R_SYM (rel->r_info);
6179 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6183 if (sym_sec == NULL || sym_sec->owner == NULL)
6185 const char *sym_name;
6187 sym_name = h->root.root.string;
6189 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6192 (*_bfd_error_handler)
6193 (_("%B: undefined sym `%s' in .opd section"),
6199 /* opd entries are always for functions defined in the
6200 current input bfd. If the symbol isn't defined in the
6201 input bfd, then we won't be using the function in this
6202 bfd; It must be defined in a linkonce section in another
6203 bfd, or is weak. It's also possible that we are
6204 discarding the function due to a linker script /DISCARD/,
6205 which we test for via the output_section. */
6206 if (sym_sec->owner != ibfd
6207 || sym_sec->output_section == bfd_abs_section_ptr)
6212 || (rel + 1 == relend && rel->r_offset == offset + 16))
6214 if (sec->size == offset + 24)
6219 if (rel == relend && sec->size == offset + 16)
6227 if (rel->r_offset == offset + 24)
6229 else if (rel->r_offset != offset + 16)
6231 else if (rel + 1 < relend
6232 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6233 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6238 else if (rel + 2 < relend
6239 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6240 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6249 add_aux_fields = non_overlapping && cnt_16b > 0;
6251 if (need_edit || add_aux_fields)
6253 Elf_Internal_Rela *write_rel;
6254 bfd_byte *rptr, *wptr;
6255 bfd_byte *new_contents = NULL;
6259 /* This seems a waste of time as input .opd sections are all
6260 zeros as generated by gcc, but I suppose there's no reason
6261 this will always be so. We might start putting something in
6262 the third word of .opd entries. */
6263 if ((sec->flags & SEC_IN_MEMORY) == 0)
6266 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6271 if (local_syms != NULL
6272 && symtab_hdr->contents != (unsigned char *) local_syms)
6274 if (elf_section_data (sec)->relocs != relstart)
6278 sec->contents = loc;
6279 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6282 elf_section_data (sec)->relocs = relstart;
6284 wptr = sec->contents;
6285 rptr = sec->contents;
6286 new_contents = sec->contents;
6290 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6291 if (new_contents == NULL)
6294 wptr = new_contents;
6297 write_rel = relstart;
6301 for (rel = relstart; rel < relend; rel++)
6303 unsigned long r_symndx;
6305 struct elf_link_hash_entry *h;
6306 Elf_Internal_Sym *sym;
6308 r_symndx = ELF64_R_SYM (rel->r_info);
6309 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6313 if (rel->r_offset == offset)
6315 struct ppc_link_hash_entry *fdh = NULL;
6317 /* See if the .opd entry is full 24 byte or
6318 16 byte (with fd_aux entry overlapped with next
6321 if ((rel + 2 == relend && sec->size == offset + 16)
6322 || (rel + 3 < relend
6323 && rel[2].r_offset == offset + 16
6324 && rel[3].r_offset == offset + 24
6325 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6326 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6330 && h->root.root.string[0] == '.')
6332 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6333 ppc_hash_table (info));
6335 && fdh->elf.root.type != bfd_link_hash_defined
6336 && fdh->elf.root.type != bfd_link_hash_defweak)
6340 skip = (sym_sec->owner != ibfd
6341 || sym_sec->output_section == bfd_abs_section_ptr);
6344 if (fdh != NULL && sym_sec->owner == ibfd)
6346 /* Arrange for the function descriptor sym
6348 fdh->elf.root.u.def.value = 0;
6349 fdh->elf.root.u.def.section = sym_sec;
6351 opd_adjust[rel->r_offset / 8] = -1;
6355 /* We'll be keeping this opd entry. */
6359 /* Redefine the function descriptor symbol to
6360 this location in the opd section. It is
6361 necessary to update the value here rather
6362 than using an array of adjustments as we do
6363 for local symbols, because various places
6364 in the generic ELF code use the value
6365 stored in u.def.value. */
6366 fdh->elf.root.u.def.value = wptr - new_contents;
6367 fdh->adjust_done = 1;
6370 /* Local syms are a bit tricky. We could
6371 tweak them as they can be cached, but
6372 we'd need to look through the local syms
6373 for the function descriptor sym which we
6374 don't have at the moment. So keep an
6375 array of adjustments. */
6376 opd_adjust[rel->r_offset / 8]
6377 = (wptr - new_contents) - (rptr - sec->contents);
6380 memcpy (wptr, rptr, opd_ent_size);
6381 wptr += opd_ent_size;
6382 if (add_aux_fields && opd_ent_size == 16)
6384 memset (wptr, '\0', 8);
6388 rptr += opd_ent_size;
6389 offset += opd_ent_size;
6394 if (!dec_dynrel_count (rel->r_info, sec, info,
6400 /* We need to adjust any reloc offsets to point to the
6401 new opd entries. While we're at it, we may as well
6402 remove redundant relocs. */
6403 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6404 if (write_rel != rel)
6405 memcpy (write_rel, rel, sizeof (*rel));
6410 sec->size = wptr - new_contents;
6411 sec->reloc_count = write_rel - relstart;
6414 free (sec->contents);
6415 sec->contents = new_contents;
6418 /* Fudge the size too, as this is used later in
6419 elf_bfd_final_link if we are emitting relocs. */
6420 elf_section_data (sec)->rel_hdr.sh_size
6421 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6422 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6425 else if (elf_section_data (sec)->relocs != relstart)
6428 if (local_syms != NULL
6429 && symtab_hdr->contents != (unsigned char *) local_syms)
6431 if (!info->keep_memory)
6434 symtab_hdr->contents = (unsigned char *) local_syms;
6439 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6441 /* If we are doing a final link and the last .opd entry is just 16 byte
6442 long, add a 8 byte padding after it. */
6443 if (need_pad != NULL && !info->relocatable)
6447 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6449 BFD_ASSERT (need_pad->size > 0);
6451 p = bfd_malloc (need_pad->size + 8);
6455 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6456 p, 0, need_pad->size))
6459 need_pad->contents = p;
6460 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6464 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6468 need_pad->contents = p;
6471 memset (need_pad->contents + need_pad->size, 0, 8);
6472 need_pad->size += 8;
6478 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6481 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6483 struct ppc_link_hash_table *htab;
6485 htab = ppc_hash_table (info);
6486 if (htab->tls_get_addr != NULL)
6488 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6490 while (h->elf.root.type == bfd_link_hash_indirect
6491 || h->elf.root.type == bfd_link_hash_warning)
6492 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6494 htab->tls_get_addr = h;
6496 if (htab->tls_get_addr_fd == NULL
6498 && h->oh->is_func_descriptor
6499 && (h->oh->elf.root.type == bfd_link_hash_defined
6500 || h->oh->elf.root.type == bfd_link_hash_defweak))
6501 htab->tls_get_addr_fd = h->oh;
6504 if (htab->tls_get_addr_fd != NULL)
6506 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6508 while (h->elf.root.type == bfd_link_hash_indirect
6509 || h->elf.root.type == bfd_link_hash_warning)
6510 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6512 htab->tls_get_addr_fd = h;
6515 return _bfd_elf_tls_setup (obfd, info);
6518 /* Run through all the TLS relocs looking for optimization
6519 opportunities. The linker has been hacked (see ppc64elf.em) to do
6520 a preliminary section layout so that we know the TLS segment
6521 offsets. We can't optimize earlier because some optimizations need
6522 to know the tp offset, and we need to optimize before allocating
6523 dynamic relocations. */
6526 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6530 struct ppc_link_hash_table *htab;
6532 if (info->relocatable || info->shared)
6535 htab = ppc_hash_table (info);
6536 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6538 Elf_Internal_Sym *locsyms = NULL;
6540 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6541 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6543 Elf_Internal_Rela *relstart, *rel, *relend;
6544 int expecting_tls_get_addr;
6546 /* Read the relocations. */
6547 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6549 if (relstart == NULL)
6552 expecting_tls_get_addr = 0;
6553 relend = relstart + sec->reloc_count;
6554 for (rel = relstart; rel < relend; rel++)
6556 enum elf_ppc64_reloc_type r_type;
6557 unsigned long r_symndx;
6558 struct elf_link_hash_entry *h;
6559 Elf_Internal_Sym *sym;
6562 char tls_set, tls_clear, tls_type = 0;
6564 bfd_boolean ok_tprel, is_local;
6566 r_symndx = ELF64_R_SYM (rel->r_info);
6567 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6571 if (elf_section_data (sec)->relocs != relstart)
6574 && (elf_tdata (ibfd)->symtab_hdr.contents
6575 != (unsigned char *) locsyms))
6582 if (h->root.type != bfd_link_hash_defined
6583 && h->root.type != bfd_link_hash_defweak)
6585 value = h->root.u.def.value;
6588 /* Symbols referenced by TLS relocs must be of type
6589 STT_TLS. So no need for .opd local sym adjust. */
6590 value = sym->st_value;
6598 value += sym_sec->output_offset;
6599 value += sym_sec->output_section->vma;
6600 value -= htab->elf.tls_sec->vma;
6601 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6602 < (bfd_vma) 1 << 32);
6605 r_type = ELF64_R_TYPE (rel->r_info);
6608 case R_PPC64_GOT_TLSLD16:
6609 case R_PPC64_GOT_TLSLD16_LO:
6610 case R_PPC64_GOT_TLSLD16_HI:
6611 case R_PPC64_GOT_TLSLD16_HA:
6612 /* These relocs should never be against a symbol
6613 defined in a shared lib. Leave them alone if
6614 that turns out to be the case. */
6615 ppc64_tlsld_got (ibfd)->refcount -= 1;
6622 tls_type = TLS_TLS | TLS_LD;
6623 expecting_tls_get_addr = 1;
6626 case R_PPC64_GOT_TLSGD16:
6627 case R_PPC64_GOT_TLSGD16_LO:
6628 case R_PPC64_GOT_TLSGD16_HI:
6629 case R_PPC64_GOT_TLSGD16_HA:
6635 tls_set = TLS_TLS | TLS_TPRELGD;
6637 tls_type = TLS_TLS | TLS_GD;
6638 expecting_tls_get_addr = 1;
6641 case R_PPC64_GOT_TPREL16_DS:
6642 case R_PPC64_GOT_TPREL16_LO_DS:
6643 case R_PPC64_GOT_TPREL16_HI:
6644 case R_PPC64_GOT_TPREL16_HA:
6645 expecting_tls_get_addr = 0;
6650 tls_clear = TLS_TPREL;
6651 tls_type = TLS_TLS | TLS_TPREL;
6658 case R_PPC64_REL14_BRTAKEN:
6659 case R_PPC64_REL14_BRNTAKEN:
6662 && (h == &htab->tls_get_addr->elf
6663 || h == &htab->tls_get_addr_fd->elf))
6665 if (!expecting_tls_get_addr
6667 && ((ELF64_R_TYPE (rel[-1].r_info)
6669 || (ELF64_R_TYPE (rel[-1].r_info)
6670 == R_PPC64_TOC16_LO)))
6672 /* Check for toc tls entries. */
6676 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6680 if (toc_tls != NULL)
6681 expecting_tls_get_addr = retval > 1;
6684 if (expecting_tls_get_addr)
6686 struct plt_entry *ent;
6687 for (ent = h->plt.plist; ent; ent = ent->next)
6688 if (ent->addend == 0)
6690 if (ent->plt.refcount > 0)
6691 ent->plt.refcount -= 1;
6696 expecting_tls_get_addr = 0;
6699 case R_PPC64_TPREL64:
6700 expecting_tls_get_addr = 0;
6704 tls_set = TLS_EXPLICIT;
6705 tls_clear = TLS_TPREL;
6711 case R_PPC64_DTPMOD64:
6712 expecting_tls_get_addr = 0;
6713 if (rel + 1 < relend
6715 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6716 && rel[1].r_offset == rel->r_offset + 8)
6720 tls_set = TLS_EXPLICIT | TLS_GD;
6723 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6732 tls_set = TLS_EXPLICIT;
6738 expecting_tls_get_addr = 0;
6742 if ((tls_set & TLS_EXPLICIT) == 0)
6744 struct got_entry *ent;
6746 /* Adjust got entry for this reloc. */
6750 ent = elf_local_got_ents (ibfd)[r_symndx];
6752 for (; ent != NULL; ent = ent->next)
6753 if (ent->addend == rel->r_addend
6754 && ent->owner == ibfd
6755 && ent->tls_type == tls_type)
6762 /* We managed to get rid of a got entry. */
6763 if (ent->got.refcount > 0)
6764 ent->got.refcount -= 1;
6769 /* If we got rid of a DTPMOD/DTPREL reloc pair then
6770 we'll lose one or two dyn relocs. */
6771 if (!dec_dynrel_count (rel->r_info, sec, info,
6775 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6777 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
6783 *tls_mask |= tls_set;
6784 *tls_mask &= ~tls_clear;
6787 if (elf_section_data (sec)->relocs != relstart)
6792 && (elf_tdata (ibfd)->symtab_hdr.contents
6793 != (unsigned char *) locsyms))
6795 if (!info->keep_memory)
6798 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6804 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6805 the values of any global symbols in a toc section that has been
6806 edited. Globals in toc sections should be a rarity, so this function
6807 sets a flag if any are found in toc sections other than the one just
6808 edited, so that futher hash table traversals can be avoided. */
6810 struct adjust_toc_info
6813 unsigned long *skip;
6814 bfd_boolean global_toc_syms;
6818 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6820 struct ppc_link_hash_entry *eh;
6821 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6823 if (h->root.type == bfd_link_hash_indirect)
6826 if (h->root.type == bfd_link_hash_warning)
6827 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6829 if (h->root.type != bfd_link_hash_defined
6830 && h->root.type != bfd_link_hash_defweak)
6833 eh = (struct ppc_link_hash_entry *) h;
6834 if (eh->adjust_done)
6837 if (eh->elf.root.u.def.section == toc_inf->toc)
6839 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6840 if (skip != (unsigned long) -1)
6841 eh->elf.root.u.def.value -= skip;
6844 (*_bfd_error_handler)
6845 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6846 eh->elf.root.u.def.section = &bfd_abs_section;
6847 eh->elf.root.u.def.value = 0;
6849 eh->adjust_done = 1;
6851 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6852 toc_inf->global_toc_syms = TRUE;
6857 /* Examine all relocs referencing .toc sections in order to remove
6858 unused .toc entries. */
6861 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6864 struct adjust_toc_info toc_inf;
6866 toc_inf.global_toc_syms = TRUE;
6867 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6869 asection *toc, *sec;
6870 Elf_Internal_Shdr *symtab_hdr;
6871 Elf_Internal_Sym *local_syms;
6872 struct elf_link_hash_entry **sym_hashes;
6873 Elf_Internal_Rela *relstart, *rel;
6874 unsigned long *skip, *drop;
6875 unsigned char *used;
6876 unsigned char *keep, last, some_unused;
6878 toc = bfd_get_section_by_name (ibfd, ".toc");
6881 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6882 || elf_discarded_section (toc))
6886 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6887 sym_hashes = elf_sym_hashes (ibfd);
6889 /* Look at sections dropped from the final link. */
6892 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6894 if (sec->reloc_count == 0
6895 || !elf_discarded_section (sec)
6896 || get_opd_info (sec)
6897 || (sec->flags & SEC_ALLOC) == 0
6898 || (sec->flags & SEC_DEBUGGING) != 0)
6901 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6902 if (relstart == NULL)
6905 /* Run through the relocs to see which toc entries might be
6907 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6909 enum elf_ppc64_reloc_type r_type;
6910 unsigned long r_symndx;
6912 struct elf_link_hash_entry *h;
6913 Elf_Internal_Sym *sym;
6916 r_type = ELF64_R_TYPE (rel->r_info);
6923 case R_PPC64_TOC16_LO:
6924 case R_PPC64_TOC16_HI:
6925 case R_PPC64_TOC16_HA:
6926 case R_PPC64_TOC16_DS:
6927 case R_PPC64_TOC16_LO_DS:
6931 r_symndx = ELF64_R_SYM (rel->r_info);
6932 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6940 val = h->root.u.def.value;
6942 val = sym->st_value;
6943 val += rel->r_addend;
6945 if (val >= toc->size)
6948 /* Anything in the toc ought to be aligned to 8 bytes.
6949 If not, don't mark as unused. */
6955 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
6963 if (elf_section_data (sec)->relocs != relstart)
6970 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
6974 if (local_syms != NULL
6975 && symtab_hdr->contents != (unsigned char *) local_syms)
6979 && elf_section_data (sec)->relocs != relstart)
6986 /* Now check all kept sections that might reference the toc. */
6987 for (sec = ibfd->sections;
6989 /* Check the toc itself last. */
6990 sec = (sec == toc ? NULL
6991 : sec->next == toc && sec->next->next ? sec->next->next
6992 : sec->next == NULL ? toc
6997 if (sec->reloc_count == 0
6998 || elf_discarded_section (sec)
6999 || get_opd_info (sec)
7000 || (sec->flags & SEC_ALLOC) == 0
7001 || (sec->flags & SEC_DEBUGGING) != 0)
7004 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7005 if (relstart == NULL)
7008 /* Mark toc entries referenced as used. */
7011 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7013 enum elf_ppc64_reloc_type r_type;
7014 unsigned long r_symndx;
7016 struct elf_link_hash_entry *h;
7017 Elf_Internal_Sym *sym;
7020 r_type = ELF64_R_TYPE (rel->r_info);
7024 case R_PPC64_TOC16_LO:
7025 case R_PPC64_TOC16_HI:
7026 case R_PPC64_TOC16_HA:
7027 case R_PPC64_TOC16_DS:
7028 case R_PPC64_TOC16_LO_DS:
7029 /* In case we're taking addresses of toc entries. */
7030 case R_PPC64_ADDR64:
7037 r_symndx = ELF64_R_SYM (rel->r_info);
7038 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7049 val = h->root.u.def.value;
7051 val = sym->st_value;
7052 val += rel->r_addend;
7054 if (val >= toc->size)
7057 /* For the toc section, we only mark as used if
7058 this entry itself isn't unused. */
7061 && (used[rel->r_offset >> 3]
7062 || !skip[rel->r_offset >> 3]))
7063 /* Do all the relocs again, to catch reference
7072 /* Merge the used and skip arrays. Assume that TOC
7073 doublewords not appearing as either used or unused belong
7074 to to an entry more than one doubleword in size. */
7075 for (drop = skip, keep = used, last = 0, some_unused = 0;
7076 drop < skip + (toc->size + 7) / 8;
7097 bfd_byte *contents, *src;
7100 /* Shuffle the toc contents, and at the same time convert the
7101 skip array from booleans into offsets. */
7102 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7105 elf_section_data (toc)->this_hdr.contents = contents;
7107 for (src = contents, off = 0, drop = skip;
7108 src < contents + toc->size;
7113 *drop = (unsigned long) -1;
7119 memcpy (src - off, src, 8);
7122 toc->rawsize = toc->size;
7123 toc->size = src - contents - off;
7125 if (toc->reloc_count != 0)
7127 Elf_Internal_Rela *wrel;
7130 /* Read toc relocs. */
7131 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7133 if (relstart == NULL)
7136 /* Remove unused toc relocs, and adjust those we keep. */
7138 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7139 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7141 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7142 wrel->r_info = rel->r_info;
7143 wrel->r_addend = rel->r_addend;
7146 else if (!dec_dynrel_count (rel->r_info, toc, info,
7147 &local_syms, NULL, NULL))
7150 toc->reloc_count = wrel - relstart;
7151 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7152 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7153 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7156 /* Adjust addends for relocs against the toc section sym. */
7157 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7159 if (sec->reloc_count == 0
7160 || elf_discarded_section (sec))
7163 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7165 if (relstart == NULL)
7168 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7170 enum elf_ppc64_reloc_type r_type;
7171 unsigned long r_symndx;
7173 struct elf_link_hash_entry *h;
7174 Elf_Internal_Sym *sym;
7176 r_type = ELF64_R_TYPE (rel->r_info);
7183 case R_PPC64_TOC16_LO:
7184 case R_PPC64_TOC16_HI:
7185 case R_PPC64_TOC16_HA:
7186 case R_PPC64_TOC16_DS:
7187 case R_PPC64_TOC16_LO_DS:
7188 case R_PPC64_ADDR64:
7192 r_symndx = ELF64_R_SYM (rel->r_info);
7193 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7197 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7200 rel->r_addend -= skip[rel->r_addend >> 3];
7204 /* We shouldn't have local or global symbols defined in the TOC,
7205 but handle them anyway. */
7206 if (local_syms != NULL)
7208 Elf_Internal_Sym *sym;
7210 for (sym = local_syms;
7211 sym < local_syms + symtab_hdr->sh_info;
7213 if (sym->st_shndx != SHN_UNDEF
7214 && (sym->st_shndx < SHN_LORESERVE
7215 || sym->st_shndx > SHN_HIRESERVE)
7216 && sym->st_value != 0
7217 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7219 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7220 sym->st_value -= skip[sym->st_value >> 3];
7223 (*_bfd_error_handler)
7224 (_("%s defined in removed toc entry"),
7225 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7228 sym->st_shndx = SHN_ABS;
7230 symtab_hdr->contents = (unsigned char *) local_syms;
7234 /* Finally, adjust any global syms defined in the toc. */
7235 if (toc_inf.global_toc_syms)
7238 toc_inf.skip = skip;
7239 toc_inf.global_toc_syms = FALSE;
7240 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7245 if (local_syms != NULL
7246 && symtab_hdr->contents != (unsigned char *) local_syms)
7248 if (!info->keep_memory)
7251 symtab_hdr->contents = (unsigned char *) local_syms;
7259 /* Allocate space in .plt, .got and associated reloc sections for
7263 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7265 struct bfd_link_info *info;
7266 struct ppc_link_hash_table *htab;
7268 struct ppc_link_hash_entry *eh;
7269 struct ppc_dyn_relocs *p;
7270 struct got_entry *gent;
7272 if (h->root.type == bfd_link_hash_indirect)
7275 if (h->root.type == bfd_link_hash_warning)
7276 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7278 info = (struct bfd_link_info *) inf;
7279 htab = ppc_hash_table (info);
7281 if (htab->elf.dynamic_sections_created
7283 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
7285 struct plt_entry *pent;
7286 bfd_boolean doneone = FALSE;
7287 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7288 if (pent->plt.refcount > 0)
7290 /* If this is the first .plt entry, make room for the special
7294 s->size += PLT_INITIAL_ENTRY_SIZE;
7296 pent->plt.offset = s->size;
7298 /* Make room for this entry. */
7299 s->size += PLT_ENTRY_SIZE;
7301 /* Make room for the .glink code. */
7304 s->size += GLINK_CALL_STUB_SIZE;
7305 /* We need bigger stubs past index 32767. */
7306 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7310 /* We also need to make an entry in the .rela.plt section. */
7312 s->size += sizeof (Elf64_External_Rela);
7316 pent->plt.offset = (bfd_vma) -1;
7319 h->plt.plist = NULL;
7325 h->plt.plist = NULL;
7329 eh = (struct ppc_link_hash_entry *) h;
7330 /* Run through the TLS GD got entries first if we're changing them
7332 if ((eh->tls_mask & TLS_TPRELGD) != 0)
7333 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7334 if (gent->got.refcount > 0
7335 && (gent->tls_type & TLS_GD) != 0)
7337 /* This was a GD entry that has been converted to TPREL. If
7338 there happens to be a TPREL entry we can use that one. */
7339 struct got_entry *ent;
7340 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7341 if (ent->got.refcount > 0
7342 && (ent->tls_type & TLS_TPREL) != 0
7343 && ent->addend == gent->addend
7344 && ent->owner == gent->owner)
7346 gent->got.refcount = 0;
7350 /* If not, then we'll be using our own TPREL entry. */
7351 if (gent->got.refcount != 0)
7352 gent->tls_type = TLS_TLS | TLS_TPREL;
7355 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7356 if (gent->got.refcount > 0)
7360 /* Make sure this symbol is output as a dynamic symbol.
7361 Undefined weak syms won't yet be marked as dynamic,
7362 nor will all TLS symbols. */
7363 if (h->dynindx == -1
7364 && !h->forced_local)
7366 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7370 if ((gent->tls_type & TLS_LD) != 0
7373 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
7377 s = ppc64_elf_tdata (gent->owner)->got;
7378 gent->got.offset = s->size;
7380 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
7381 dyn = htab->elf.dynamic_sections_created;
7383 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7384 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7385 || h->root.type != bfd_link_hash_undefweak))
7386 ppc64_elf_tdata (gent->owner)->relgot->size
7387 += (gent->tls_type & eh->tls_mask & TLS_GD
7388 ? 2 * sizeof (Elf64_External_Rela)
7389 : sizeof (Elf64_External_Rela));
7392 gent->got.offset = (bfd_vma) -1;
7394 if (eh->dyn_relocs == NULL)
7397 /* In the shared -Bsymbolic case, discard space allocated for
7398 dynamic pc-relative relocs against symbols which turn out to be
7399 defined in regular objects. For the normal shared case, discard
7400 space for relocs that have become local due to symbol visibility
7405 /* Relocs that use pc_count are those that appear on a call insn,
7406 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7407 generated via assembly. We want calls to protected symbols to
7408 resolve directly to the function rather than going via the plt.
7409 If people want function pointer comparisons to work as expected
7410 then they should avoid writing weird assembly. */
7411 if (SYMBOL_CALLS_LOCAL (info, h))
7413 struct ppc_dyn_relocs **pp;
7415 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
7417 p->count -= p->pc_count;
7426 /* Also discard relocs on undefined weak syms with non-default
7428 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7429 && h->root.type == bfd_link_hash_undefweak)
7430 eh->dyn_relocs = NULL;
7432 else if (ELIMINATE_COPY_RELOCS)
7434 /* For the non-shared case, discard space for relocs against
7435 symbols which turn out to need copy relocs or are not
7442 /* Make sure this symbol is output as a dynamic symbol.
7443 Undefined weak syms won't yet be marked as dynamic. */
7444 if (h->dynindx == -1
7445 && !h->forced_local)
7447 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7451 /* If that succeeded, we know we'll be keeping all the
7453 if (h->dynindx != -1)
7457 eh->dyn_relocs = NULL;
7462 /* Finally, allocate space. */
7463 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7465 asection *sreloc = elf_section_data (p->sec)->sreloc;
7466 sreloc->size += p->count * sizeof (Elf64_External_Rela);
7472 /* Find any dynamic relocs that apply to read-only sections. */
7475 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7477 struct ppc_link_hash_entry *eh;
7478 struct ppc_dyn_relocs *p;
7480 if (h->root.type == bfd_link_hash_warning)
7481 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7483 eh = (struct ppc_link_hash_entry *) h;
7484 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7486 asection *s = p->sec->output_section;
7488 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7490 struct bfd_link_info *info = inf;
7492 info->flags |= DF_TEXTREL;
7494 /* Not an error, just cut short the traversal. */
7501 /* Set the sizes of the dynamic sections. */
7504 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7505 struct bfd_link_info *info)
7507 struct ppc_link_hash_table *htab;
7513 htab = ppc_hash_table (info);
7514 dynobj = htab->elf.dynobj;
7518 if (htab->elf.dynamic_sections_created)
7520 /* Set the contents of the .interp section to the interpreter. */
7521 if (info->executable)
7523 s = bfd_get_section_by_name (dynobj, ".interp");
7526 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
7527 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7531 /* Set up .got offsets for local syms, and space for local dynamic
7533 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7535 struct got_entry **lgot_ents;
7536 struct got_entry **end_lgot_ents;
7538 bfd_size_type locsymcount;
7539 Elf_Internal_Shdr *symtab_hdr;
7542 if (!is_ppc64_elf_target (ibfd->xvec))
7545 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7547 s = ppc64_elf_tdata (ibfd)->got;
7548 ppc64_tlsld_got (ibfd)->offset = s->size;
7552 srel = ppc64_elf_tdata (ibfd)->relgot;
7553 srel->size += sizeof (Elf64_External_Rela);
7557 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7559 for (s = ibfd->sections; s != NULL; s = s->next)
7561 struct ppc_dyn_relocs *p;
7563 for (p = *((struct ppc_dyn_relocs **)
7564 &elf_section_data (s)->local_dynrel);
7568 if (!bfd_is_abs_section (p->sec)
7569 && bfd_is_abs_section (p->sec->output_section))
7571 /* Input section has been discarded, either because
7572 it is a copy of a linkonce section or due to
7573 linker script /DISCARD/, so we'll be discarding
7576 else if (p->count != 0)
7578 srel = elf_section_data (p->sec)->sreloc;
7579 srel->size += p->count * sizeof (Elf64_External_Rela);
7580 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7581 info->flags |= DF_TEXTREL;
7586 lgot_ents = elf_local_got_ents (ibfd);
7590 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7591 locsymcount = symtab_hdr->sh_info;
7592 end_lgot_ents = lgot_ents + locsymcount;
7593 lgot_masks = (char *) end_lgot_ents;
7594 s = ppc64_elf_tdata (ibfd)->got;
7595 srel = ppc64_elf_tdata (ibfd)->relgot;
7596 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
7598 struct got_entry *ent;
7600 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7601 if (ent->got.refcount > 0)
7603 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
7605 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
7607 ppc64_tlsld_got (ibfd)->offset = s->size;
7610 srel->size += sizeof (Elf64_External_Rela);
7612 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
7616 ent->got.offset = s->size;
7617 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
7621 srel->size += 2 * sizeof (Elf64_External_Rela);
7627 srel->size += sizeof (Elf64_External_Rela);
7632 ent->got.offset = (bfd_vma) -1;
7636 /* Allocate global sym .plt and .got entries, and space for global
7637 sym dynamic relocs. */
7638 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
7640 /* We now have determined the sizes of the various dynamic sections.
7641 Allocate memory for them. */
7643 for (s = dynobj->sections; s != NULL; s = s->next)
7645 if ((s->flags & SEC_LINKER_CREATED) == 0)
7648 if (s == htab->brlt || s == htab->relbrlt)
7649 /* These haven't been allocated yet; don't strip. */
7651 else if (s == htab->got
7653 || s == htab->glink)
7655 /* Strip this section if we don't need it; see the
7658 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
7662 /* If we don't need this section, strip it from the
7663 output file. This is mostly to handle .rela.bss and
7664 .rela.plt. We must create both sections in
7665 create_dynamic_sections, because they must be created
7666 before the linker maps input sections to output
7667 sections. The linker does that before
7668 adjust_dynamic_symbol is called, and it is that
7669 function which decides whether anything needs to go
7670 into these sections. */
7674 if (s != htab->relplt)
7677 /* We use the reloc_count field as a counter if we need
7678 to copy relocs into the output file. */
7684 /* It's not one of our sections, so don't allocate space. */
7690 s->flags |= SEC_EXCLUDE;
7694 /* .plt is in the bss section. We don't initialise it. */
7698 /* Allocate memory for the section contents. We use bfd_zalloc
7699 here in case unused entries are not reclaimed before the
7700 section's contents are written out. This should not happen,
7701 but this way if it does we get a R_PPC64_NONE reloc in .rela
7702 sections instead of garbage.
7703 We also rely on the section contents being zero when writing
7705 s->contents = bfd_zalloc (dynobj, s->size);
7706 if (s->contents == NULL)
7710 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7712 if (!is_ppc64_elf_target (ibfd->xvec))
7715 s = ppc64_elf_tdata (ibfd)->got;
7716 if (s != NULL && s != htab->got)
7719 s->flags |= SEC_EXCLUDE;
7722 s->contents = bfd_zalloc (ibfd, s->size);
7723 if (s->contents == NULL)
7727 s = ppc64_elf_tdata (ibfd)->relgot;
7731 s->flags |= SEC_EXCLUDE;
7734 s->contents = bfd_zalloc (ibfd, s->size);
7735 if (s->contents == NULL)
7743 if (htab->elf.dynamic_sections_created)
7745 /* Add some entries to the .dynamic section. We fill in the
7746 values later, in ppc64_elf_finish_dynamic_sections, but we
7747 must add the entries now so that we get the correct size for
7748 the .dynamic section. The DT_DEBUG entry is filled in by the
7749 dynamic linker and used by the debugger. */
7750 #define add_dynamic_entry(TAG, VAL) \
7751 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7753 if (info->executable)
7755 if (!add_dynamic_entry (DT_DEBUG, 0))
7759 if (htab->plt != NULL && htab->plt->size != 0)
7761 if (!add_dynamic_entry (DT_PLTGOT, 0)
7762 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7763 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
7764 || !add_dynamic_entry (DT_JMPREL, 0)
7765 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
7771 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7772 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
7778 if (!add_dynamic_entry (DT_RELA, 0)
7779 || !add_dynamic_entry (DT_RELASZ, 0)
7780 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
7783 /* If any dynamic relocs apply to a read-only section,
7784 then we need a DT_TEXTREL entry. */
7785 if ((info->flags & DF_TEXTREL) == 0)
7786 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
7788 if ((info->flags & DF_TEXTREL) != 0)
7790 if (!add_dynamic_entry (DT_TEXTREL, 0))
7795 #undef add_dynamic_entry
7800 /* Determine the type of stub needed, if any, for a call. */
7802 static inline enum ppc_stub_type
7803 ppc_type_of_stub (asection *input_sec,
7804 const Elf_Internal_Rela *rel,
7805 struct ppc_link_hash_entry **hash,
7806 bfd_vma destination)
7808 struct ppc_link_hash_entry *h = *hash;
7810 bfd_vma branch_offset;
7811 bfd_vma max_branch_offset;
7812 enum elf_ppc64_reloc_type r_type;
7817 && h->oh->is_func_descriptor)
7820 if (h->elf.dynindx != -1)
7822 struct plt_entry *ent;
7824 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
7825 if (ent->addend == rel->r_addend
7826 && ent->plt.offset != (bfd_vma) -1)
7829 return ppc_stub_plt_call;
7833 if (!(h->elf.root.type == bfd_link_hash_defined
7834 || h->elf.root.type == bfd_link_hash_defweak)
7835 || h->elf.root.u.def.section->output_section == NULL)
7836 return ppc_stub_none;
7839 /* Determine where the call point is. */
7840 location = (input_sec->output_offset
7841 + input_sec->output_section->vma
7844 branch_offset = destination - location;
7845 r_type = ELF64_R_TYPE (rel->r_info);
7847 /* Determine if a long branch stub is needed. */
7848 max_branch_offset = 1 << 25;
7849 if (r_type != R_PPC64_REL24)
7850 max_branch_offset = 1 << 15;
7852 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7853 /* We need a stub. Figure out whether a long_branch or plt_branch
7855 return ppc_stub_long_branch;
7857 return ppc_stub_none;
7860 /* Build a .plt call stub. */
7862 static inline bfd_byte *
7863 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
7865 #define PPC_LO(v) ((v) & 0xffff)
7866 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7867 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7869 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
7870 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
7871 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7872 if (PPC_HA (offset + 8) != PPC_HA (offset))
7873 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7875 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7876 if (PPC_HA (offset + 8) != PPC_HA (offset))
7877 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7879 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7880 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7881 bfd_put_32 (obfd, BCTR, p), p += 4;
7886 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7888 struct ppc_stub_hash_entry *stub_entry;
7889 struct ppc_branch_hash_entry *br_entry;
7890 struct bfd_link_info *info;
7891 struct ppc_link_hash_table *htab;
7895 struct plt_entry *ent;
7899 /* Massage our args to the form they really have. */
7900 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7903 htab = ppc_hash_table (info);
7905 /* Make a note of the offset within the stubs for this entry. */
7906 stub_entry->stub_offset = stub_entry->stub_sec->size;
7907 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
7909 htab->stub_count[stub_entry->stub_type - 1] += 1;
7910 switch (stub_entry->stub_type)
7912 case ppc_stub_long_branch:
7913 case ppc_stub_long_branch_r2off:
7914 /* Branches are relative. This is where we are going to. */
7915 off = dest = (stub_entry->target_value
7916 + stub_entry->target_section->output_offset
7917 + stub_entry->target_section->output_section->vma);
7919 /* And this is where we are coming from. */
7920 off -= (stub_entry->stub_offset
7921 + stub_entry->stub_sec->output_offset
7922 + stub_entry->stub_sec->output_section->vma);
7924 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7930 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7931 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7932 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
7934 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
7936 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
7941 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
7943 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
7945 if (info->emitrelocations)
7947 Elf_Internal_Rela *relocs, *r;
7948 struct bfd_elf_section_data *elfsec_data;
7950 elfsec_data = elf_section_data (stub_entry->stub_sec);
7951 relocs = elfsec_data->relocs;
7954 bfd_size_type relsize;
7955 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
7956 relocs = bfd_alloc (htab->stub_bfd, relsize);
7959 elfsec_data->relocs = relocs;
7960 elfsec_data->rel_hdr.sh_size = relsize;
7961 elfsec_data->rel_hdr.sh_entsize = 24;
7962 stub_entry->stub_sec->reloc_count = 0;
7964 r = relocs + stub_entry->stub_sec->reloc_count;
7965 stub_entry->stub_sec->reloc_count += 1;
7966 r->r_offset = loc - stub_entry->stub_sec->contents;
7967 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
7969 if (stub_entry->h != NULL)
7971 struct elf_link_hash_entry **hashes;
7972 unsigned long symndx;
7973 struct ppc_link_hash_entry *h;
7975 hashes = elf_sym_hashes (htab->stub_bfd);
7978 bfd_size_type hsize;
7980 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
7981 hashes = bfd_zalloc (htab->stub_bfd, hsize);
7984 elf_sym_hashes (htab->stub_bfd) = hashes;
7985 htab->stub_globals = 1;
7987 symndx = htab->stub_globals++;
7989 hashes[symndx] = &h->elf;
7990 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
7991 if (h->oh != NULL && h->oh->is_func)
7993 if (h->elf.root.u.def.section != stub_entry->target_section)
7994 /* H is an opd symbol. The addend must be zero. */
7998 off = (h->elf.root.u.def.value
7999 + h->elf.root.u.def.section->output_offset
8000 + h->elf.root.u.def.section->output_section->vma);
8007 case ppc_stub_plt_branch:
8008 case ppc_stub_plt_branch_r2off:
8009 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8010 stub_entry->root.string + 9,
8012 if (br_entry == NULL)
8014 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
8015 stub_entry->root.string + 9);
8016 htab->stub_error = TRUE;
8020 off = (stub_entry->target_value
8021 + stub_entry->target_section->output_offset
8022 + stub_entry->target_section->output_section->vma);
8024 bfd_put_64 (htab->brlt->owner, off,
8025 htab->brlt->contents + br_entry->offset);
8027 if (htab->relbrlt != NULL)
8029 /* Create a reloc for the branch lookup table entry. */
8030 Elf_Internal_Rela rela;
8033 rela.r_offset = (br_entry->offset
8034 + htab->brlt->output_offset
8035 + htab->brlt->output_section->vma);
8036 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8037 rela.r_addend = off;
8039 rl = htab->relbrlt->contents;
8040 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8041 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
8044 off = (br_entry->offset
8045 + htab->brlt->output_offset
8046 + htab->brlt->output_section->vma
8047 - elf_gp (htab->brlt->output_section->owner)
8048 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8050 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8052 (*_bfd_error_handler)
8053 (_("linkage table error against `%s'"),
8054 stub_entry->root.string);
8055 bfd_set_error (bfd_error_bad_value);
8056 htab->stub_error = TRUE;
8061 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8063 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8065 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8072 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8073 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8074 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
8076 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8078 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8080 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8082 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
8086 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
8088 bfd_put_32 (htab->stub_bfd, BCTR, loc);
8091 case ppc_stub_plt_call:
8092 /* Do the best we can for shared libraries built without
8093 exporting ".foo" for each "foo". This can happen when symbol
8094 versioning scripts strip all bar a subset of symbols. */
8095 if (stub_entry->h->oh != NULL
8096 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
8097 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
8099 /* Point the symbol at the stub. There may be multiple stubs,
8100 we don't really care; The main thing is to make this sym
8101 defined somewhere. Maybe defining the symbol in the stub
8102 section is a silly idea. If we didn't do this, htab->top_id
8104 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8105 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8106 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
8109 /* Now build the stub. */
8111 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8112 if (ent->addend == stub_entry->addend)
8114 off = ent->plt.offset;
8117 if (off >= (bfd_vma) -2)
8120 off &= ~ (bfd_vma) 1;
8121 off += (htab->plt->output_offset
8122 + htab->plt->output_section->vma
8123 - elf_gp (htab->plt->output_section->owner)
8124 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8126 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8128 (*_bfd_error_handler)
8129 (_("linkage table error against `%s'"),
8130 stub_entry->h->elf.root.root.string);
8131 bfd_set_error (bfd_error_bad_value);
8132 htab->stub_error = TRUE;
8136 p = build_plt_stub (htab->stub_bfd, loc, off);
8145 stub_entry->stub_sec->size += size;
8147 if (htab->emit_stub_syms)
8149 struct elf_link_hash_entry *h;
8152 const char *const stub_str[] = { "long_branch",
8153 "long_branch_r2off",
8158 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8159 len2 = strlen (stub_entry->root.string);
8160 name = bfd_malloc (len1 + len2 + 2);
8163 memcpy (name, stub_entry->root.string, 9);
8164 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8165 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8166 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
8169 if (h->root.type == bfd_link_hash_new)
8171 h->root.type = bfd_link_hash_defined;
8172 h->root.u.def.section = stub_entry->stub_sec;
8173 h->root.u.def.value = stub_entry->stub_offset;
8176 h->ref_regular_nonweak = 1;
8177 h->forced_local = 1;
8185 /* As above, but don't actually build the stub. Just bump offset so
8186 we know stub section sizes, and select plt_branch stubs where
8187 long_branch stubs won't do. */
8190 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8192 struct ppc_stub_hash_entry *stub_entry;
8193 struct bfd_link_info *info;
8194 struct ppc_link_hash_table *htab;
8198 /* Massage our args to the form they really have. */
8199 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8202 htab = ppc_hash_table (info);
8204 if (stub_entry->stub_type == ppc_stub_plt_call)
8206 struct plt_entry *ent;
8208 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8209 if (ent->addend == stub_entry->addend)
8211 off = ent->plt.offset & ~(bfd_vma) 1;
8214 if (off >= (bfd_vma) -2)
8216 off += (htab->plt->output_offset
8217 + htab->plt->output_section->vma
8218 - elf_gp (htab->plt->output_section->owner)
8219 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8221 size = PLT_CALL_STUB_SIZE;
8222 if (PPC_HA (off + 16) != PPC_HA (off))
8227 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8229 off = (stub_entry->target_value
8230 + stub_entry->target_section->output_offset
8231 + stub_entry->target_section->output_section->vma);
8232 off -= (stub_entry->stub_sec->size
8233 + stub_entry->stub_sec->output_offset
8234 + stub_entry->stub_sec->output_section->vma);
8236 /* Reset the stub type from the plt variant in case we now
8237 can reach with a shorter stub. */
8238 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8239 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8242 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8248 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8249 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8251 struct ppc_branch_hash_entry *br_entry;
8253 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8254 stub_entry->root.string + 9,
8256 if (br_entry == NULL)
8258 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8259 stub_entry->root.string + 9);
8260 htab->stub_error = TRUE;
8264 if (br_entry->iter != htab->stub_iteration)
8266 br_entry->iter = htab->stub_iteration;
8267 br_entry->offset = htab->brlt->size;
8268 htab->brlt->size += 8;
8270 if (htab->relbrlt != NULL)
8271 htab->relbrlt->size += sizeof (Elf64_External_Rela);
8274 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
8276 if (stub_entry->stub_type != ppc_stub_plt_branch)
8280 if (info->emitrelocations
8281 && (stub_entry->stub_type == ppc_stub_long_branch
8282 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8283 stub_entry->stub_sec->reloc_count += 1;
8286 stub_entry->stub_sec->size += size;
8290 /* Set up various things so that we can make a list of input sections
8291 for each output section included in the link. Returns -1 on error,
8292 0 when no stubs will be needed, and 1 on success. */
8295 ppc64_elf_setup_section_lists (bfd *output_bfd,
8296 struct bfd_link_info *info,
8300 int top_id, top_index, id;
8302 asection **input_list;
8304 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8306 htab->no_multi_toc = no_multi_toc;
8308 if (htab->brlt == NULL)
8311 /* Find the top input section id. */
8312 for (input_bfd = info->input_bfds, top_id = 3;
8314 input_bfd = input_bfd->link_next)
8316 for (section = input_bfd->sections;
8318 section = section->next)
8320 if (top_id < section->id)
8321 top_id = section->id;
8325 htab->top_id = top_id;
8326 amt = sizeof (struct map_stub) * (top_id + 1);
8327 htab->stub_group = bfd_zmalloc (amt);
8328 if (htab->stub_group == NULL)
8331 /* Set toc_off for com, und, abs and ind sections. */
8332 for (id = 0; id < 3; id++)
8333 htab->stub_group[id].toc_off = TOC_BASE_OFF;
8335 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
8337 /* We can't use output_bfd->section_count here to find the top output
8338 section index as some sections may have been removed, and
8339 strip_excluded_output_sections doesn't renumber the indices. */
8340 for (section = output_bfd->sections, top_index = 0;
8342 section = section->next)
8344 if (top_index < section->index)
8345 top_index = section->index;
8348 htab->top_index = top_index;
8349 amt = sizeof (asection *) * (top_index + 1);
8350 input_list = bfd_zmalloc (amt);
8351 htab->input_list = input_list;
8352 if (input_list == NULL)
8358 /* The linker repeatedly calls this function for each TOC input section
8359 and linker generated GOT section. Group input bfds such that the toc
8360 within a group is less than 64k in size. Will break with cute linker
8361 scripts that play games with dot in the output toc section. */
8364 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
8366 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8368 if (!htab->no_multi_toc)
8370 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8371 bfd_vma off = addr - htab->toc_curr;
8373 if (off + isec->size > 0x10000)
8374 htab->toc_curr = addr;
8376 elf_gp (isec->owner) = (htab->toc_curr
8377 - elf_gp (isec->output_section->owner)
8382 /* Called after the last call to the above function. */
8385 ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
8387 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8389 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8391 /* toc_curr tracks the TOC offset used for code sections below in
8392 ppc64_elf_next_input_section. Start off at 0x8000. */
8393 htab->toc_curr = TOC_BASE_OFF;
8396 /* No toc references were found in ISEC. If the code in ISEC makes no
8397 calls, then there's no need to use toc adjusting stubs when branching
8398 into ISEC. Actually, indirect calls from ISEC are OK as they will
8399 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8400 needed, and 2 if a cyclical call-graph was found but no other reason
8401 for a stub was detected. If called from the top level, a return of
8402 2 means the same as a return of 0. */
8405 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
8407 Elf_Internal_Rela *relstart, *rel;
8408 Elf_Internal_Sym *local_syms;
8410 struct ppc_link_hash_table *htab;
8412 /* We know none of our code bearing sections will need toc stubs. */
8413 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8416 if (isec->size == 0)
8419 if (isec->output_section == NULL)
8422 /* Hack for linux kernel. .fixup contains branches, but only back to
8423 the function that hit an exception. */
8424 if (strcmp (isec->name, ".fixup") == 0)
8427 if (isec->reloc_count == 0)
8430 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8432 if (relstart == NULL)
8435 /* Look for branches to outside of this section. */
8438 htab = ppc_hash_table (info);
8439 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
8441 enum elf_ppc64_reloc_type r_type;
8442 unsigned long r_symndx;
8443 struct elf_link_hash_entry *h;
8444 Elf_Internal_Sym *sym;
8450 r_type = ELF64_R_TYPE (rel->r_info);
8451 if (r_type != R_PPC64_REL24
8452 && r_type != R_PPC64_REL14
8453 && r_type != R_PPC64_REL14_BRTAKEN
8454 && r_type != R_PPC64_REL14_BRNTAKEN)
8457 r_symndx = ELF64_R_SYM (rel->r_info);
8458 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8465 /* Calls to dynamic lib functions go through a plt call stub
8466 that uses r2. Branches to undefined symbols might be a call
8467 using old-style dot symbols that can be satisfied by a plt
8468 call into a new-style dynamic library. */
8469 if (sym_sec == NULL)
8471 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8474 && eh->oh->elf.plt.plist != NULL)
8480 /* Ignore other undefined symbols. */
8484 /* Assume branches to other sections not included in the link need
8485 stubs too, to cover -R and absolute syms. */
8486 if (sym_sec->output_section == NULL)
8493 sym_value = sym->st_value;
8496 if (h->root.type != bfd_link_hash_defined
8497 && h->root.type != bfd_link_hash_defweak)
8499 sym_value = h->root.u.def.value;
8501 sym_value += rel->r_addend;
8503 /* If this branch reloc uses an opd sym, find the code section. */
8504 opd_adjust = get_opd_info (sym_sec);
8505 if (opd_adjust != NULL)
8511 adjust = opd_adjust[sym->st_value / 8];
8513 /* Assume deleted functions won't ever be called. */
8515 sym_value += adjust;
8518 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8519 if (dest == (bfd_vma) -1)
8524 + sym_sec->output_offset
8525 + sym_sec->output_section->vma);
8527 /* Ignore branch to self. */
8528 if (sym_sec == isec)
8531 /* If the called function uses the toc, we need a stub. */
8532 if (sym_sec->has_toc_reloc
8533 || sym_sec->makes_toc_func_call)
8539 /* Assume any branch that needs a long branch stub might in fact
8540 need a plt_branch stub. A plt_branch stub uses r2. */
8541 else if (dest - (isec->output_offset
8542 + isec->output_section->vma
8543 + rel->r_offset) + (1 << 25) >= (2 << 25))
8549 /* If calling back to a section in the process of being tested, we
8550 can't say for sure that no toc adjusting stubs are needed, so
8551 don't return zero. */
8552 else if (sym_sec->call_check_in_progress)
8555 /* Branches to another section that itself doesn't have any TOC
8556 references are OK. Recursively call ourselves to check. */
8557 else if (sym_sec->id <= htab->top_id
8558 && htab->stub_group[sym_sec->id].toc_off == 0)
8562 /* Mark current section as indeterminate, so that other
8563 sections that call back to current won't be marked as
8565 isec->call_check_in_progress = 1;
8566 recur = toc_adjusting_stub_needed (info, sym_sec);
8567 isec->call_check_in_progress = 0;
8571 /* An error. Exit. */
8575 else if (recur <= 1)
8577 /* Known result. Mark as checked and set section flag. */
8578 htab->stub_group[sym_sec->id].toc_off = 1;
8581 sym_sec->makes_toc_func_call = 1;
8588 /* Unknown result. Continue checking. */
8594 if (local_syms != NULL
8595 && (elf_tdata (isec->owner)->symtab_hdr.contents
8596 != (unsigned char *) local_syms))
8598 if (elf_section_data (isec)->relocs != relstart)
8604 /* The linker repeatedly calls this function for each input section,
8605 in the order that input sections are linked into output sections.
8606 Build lists of input sections to determine groupings between which
8607 we may insert linker stubs. */
8610 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
8612 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8614 if ((isec->output_section->flags & SEC_CODE) != 0
8615 && isec->output_section->index <= htab->top_index)
8617 asection **list = htab->input_list + isec->output_section->index;
8618 /* Steal the link_sec pointer for our list. */
8619 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8620 /* This happens to make the list in reverse order,
8621 which is what we want. */
8622 PREV_SEC (isec) = *list;
8626 if (htab->multi_toc_needed)
8628 /* If a code section has a function that uses the TOC then we need
8629 to use the right TOC (obviously). Also, make sure that .opd gets
8630 the correct TOC value for R_PPC64_TOC relocs that don't have or
8631 can't find their function symbol (shouldn't ever happen now). */
8632 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8634 if (elf_gp (isec->owner) != 0)
8635 htab->toc_curr = elf_gp (isec->owner);
8637 else if (htab->stub_group[isec->id].toc_off == 0)
8639 int ret = toc_adjusting_stub_needed (info, isec);
8643 isec->makes_toc_func_call = ret & 1;
8647 /* Functions that don't use the TOC can belong in any TOC group.
8648 Use the last TOC base. This happens to make _init and _fini
8650 htab->stub_group[isec->id].toc_off = htab->toc_curr;
8654 /* See whether we can group stub sections together. Grouping stub
8655 sections may result in fewer stubs. More importantly, we need to
8656 put all .init* and .fini* stubs at the beginning of the .init or
8657 .fini output sections respectively, because glibc splits the
8658 _init and _fini functions into multiple parts. Putting a stub in
8659 the middle of a function is not a good idea. */
8662 group_sections (struct ppc_link_hash_table *htab,
8663 bfd_size_type stub_group_size,
8664 bfd_boolean stubs_always_before_branch)
8666 asection **list = htab->input_list + htab->top_index;
8669 asection *tail = *list;
8670 while (tail != NULL)
8674 bfd_size_type total;
8675 bfd_boolean big_sec;
8680 big_sec = total >= stub_group_size;
8681 curr_toc = htab->stub_group[tail->id].toc_off;
8683 while ((prev = PREV_SEC (curr)) != NULL
8684 && ((total += curr->output_offset - prev->output_offset)
8686 && htab->stub_group[prev->id].toc_off == curr_toc)
8689 /* OK, the size from the start of CURR to the end is less
8690 than stub_group_size and thus can be handled by one stub
8691 section. (or the tail section is itself larger than
8692 stub_group_size, in which case we may be toast.) We
8693 should really be keeping track of the total size of stubs
8694 added here, as stubs contribute to the final output
8695 section size. That's a little tricky, and this way will
8696 only break if stubs added make the total size more than
8697 2^25, ie. for the default stub_group_size, if stubs total
8698 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8701 prev = PREV_SEC (tail);
8702 /* Set up this stub group. */
8703 htab->stub_group[tail->id].link_sec = curr;
8705 while (tail != curr && (tail = prev) != NULL);
8707 /* But wait, there's more! Input sections up to stub_group_size
8708 bytes before the stub section can be handled by it too.
8709 Don't do this if we have a really large section after the
8710 stubs, as adding more stubs increases the chance that
8711 branches may not reach into the stub section. */
8712 if (!stubs_always_before_branch && !big_sec)
8716 && ((total += tail->output_offset - prev->output_offset)
8718 && htab->stub_group[prev->id].toc_off == curr_toc)
8721 prev = PREV_SEC (tail);
8722 htab->stub_group[tail->id].link_sec = curr;
8728 while (list-- != htab->input_list);
8729 free (htab->input_list);
8733 /* Determine and set the size of the stub section for a final link.
8735 The basic idea here is to examine all the relocations looking for
8736 PC-relative calls to a target that is unreachable with a "bl"
8740 ppc64_elf_size_stubs (bfd *output_bfd,
8741 struct bfd_link_info *info,
8742 bfd_signed_vma group_size,
8743 asection *(*add_stub_section) (const char *, asection *),
8744 void (*layout_sections_again) (void))
8746 bfd_size_type stub_group_size;
8747 bfd_boolean stubs_always_before_branch;
8748 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8750 /* Stash our params away. */
8751 htab->add_stub_section = add_stub_section;
8752 htab->layout_sections_again = layout_sections_again;
8753 stubs_always_before_branch = group_size < 0;
8755 stub_group_size = -group_size;
8757 stub_group_size = group_size;
8758 if (stub_group_size == 1)
8760 /* Default values. */
8761 if (stubs_always_before_branch)
8763 stub_group_size = 0x1e00000;
8764 if (htab->has_14bit_branch)
8765 stub_group_size = 0x7800;
8769 stub_group_size = 0x1c00000;
8770 if (htab->has_14bit_branch)
8771 stub_group_size = 0x7000;
8775 group_sections (htab, stub_group_size, stubs_always_before_branch);
8780 unsigned int bfd_indx;
8782 bfd_boolean stub_changed;
8784 htab->stub_iteration += 1;
8785 stub_changed = FALSE;
8787 for (input_bfd = info->input_bfds, bfd_indx = 0;
8789 input_bfd = input_bfd->link_next, bfd_indx++)
8791 Elf_Internal_Shdr *symtab_hdr;
8793 Elf_Internal_Sym *local_syms = NULL;
8795 /* We'll need the symbol table in a second. */
8796 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8797 if (symtab_hdr->sh_info == 0)
8800 /* Walk over each section attached to the input bfd. */
8801 for (section = input_bfd->sections;
8803 section = section->next)
8805 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
8807 /* If there aren't any relocs, then there's nothing more
8809 if ((section->flags & SEC_RELOC) == 0
8810 || section->reloc_count == 0)
8813 /* If this section is a link-once section that will be
8814 discarded, then don't create any stubs. */
8815 if (section->output_section == NULL
8816 || section->output_section->owner != output_bfd)
8819 /* Get the relocs. */
8821 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
8823 if (internal_relocs == NULL)
8824 goto error_ret_free_local;
8826 /* Now examine each relocation. */
8827 irela = internal_relocs;
8828 irelaend = irela + section->reloc_count;
8829 for (; irela < irelaend; irela++)
8831 enum elf_ppc64_reloc_type r_type;
8832 unsigned int r_indx;
8833 enum ppc_stub_type stub_type;
8834 struct ppc_stub_hash_entry *stub_entry;
8835 asection *sym_sec, *code_sec;
8837 bfd_vma destination;
8838 bfd_boolean ok_dest;
8839 struct ppc_link_hash_entry *hash;
8840 struct ppc_link_hash_entry *fdh;
8841 struct elf_link_hash_entry *h;
8842 Elf_Internal_Sym *sym;
8844 const asection *id_sec;
8847 r_type = ELF64_R_TYPE (irela->r_info);
8848 r_indx = ELF64_R_SYM (irela->r_info);
8850 if (r_type >= R_PPC64_max)
8852 bfd_set_error (bfd_error_bad_value);
8853 goto error_ret_free_internal;
8856 /* Only look for stubs on branch instructions. */
8857 if (r_type != R_PPC64_REL24
8858 && r_type != R_PPC64_REL14
8859 && r_type != R_PPC64_REL14_BRTAKEN
8860 && r_type != R_PPC64_REL14_BRNTAKEN)
8863 /* Now determine the call target, its name, value,
8865 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8867 goto error_ret_free_internal;
8868 hash = (struct ppc_link_hash_entry *) h;
8874 sym_value = sym->st_value;
8880 /* Recognise an old ABI func code entry sym, and
8881 use the func descriptor sym instead. */
8882 if (hash->elf.root.root.string[0] == '.'
8883 && (fdh = get_fdh (hash, htab)) != NULL)
8885 if (fdh->elf.root.type == bfd_link_hash_defined
8886 || fdh->elf.root.type == bfd_link_hash_defweak)
8888 sym_sec = fdh->elf.root.u.def.section;
8889 sym_value = fdh->elf.root.u.def.value;
8890 if (sym_sec->output_section != NULL)
8896 else if (hash->elf.root.type == bfd_link_hash_defined
8897 || hash->elf.root.type == bfd_link_hash_defweak)
8899 sym_value = hash->elf.root.u.def.value;
8900 if (sym_sec->output_section != NULL)
8903 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8905 else if (hash->elf.root.type == bfd_link_hash_undefined)
8909 bfd_set_error (bfd_error_bad_value);
8910 goto error_ret_free_internal;
8917 sym_value += irela->r_addend;
8918 destination = (sym_value
8919 + sym_sec->output_offset
8920 + sym_sec->output_section->vma);
8924 opd_adjust = get_opd_info (sym_sec);
8925 if (opd_adjust != NULL)
8931 long adjust = opd_adjust[sym_value / 8];
8934 sym_value += adjust;
8936 dest = opd_entry_value (sym_sec, sym_value,
8937 &code_sec, &sym_value);
8938 if (dest != (bfd_vma) -1)
8943 /* Fixup old ABI sym to point at code
8945 hash->elf.root.type = bfd_link_hash_defweak;
8946 hash->elf.root.u.def.section = code_sec;
8947 hash->elf.root.u.def.value = sym_value;
8952 /* Determine what (if any) linker stub is needed. */
8953 stub_type = ppc_type_of_stub (section, irela, &hash,
8956 if (stub_type != ppc_stub_plt_call)
8958 /* Check whether we need a TOC adjusting stub.
8959 Since the linker pastes together pieces from
8960 different object files when creating the
8961 _init and _fini functions, it may be that a
8962 call to what looks like a local sym is in
8963 fact a call needing a TOC adjustment. */
8964 if (code_sec != NULL
8965 && code_sec->output_section != NULL
8966 && (htab->stub_group[code_sec->id].toc_off
8967 != htab->stub_group[section->id].toc_off)
8968 && (code_sec->has_toc_reloc
8969 || code_sec->makes_toc_func_call))
8970 stub_type = ppc_stub_long_branch_r2off;
8973 if (stub_type == ppc_stub_none)
8976 /* __tls_get_addr calls might be eliminated. */
8977 if (stub_type != ppc_stub_plt_call
8979 && (hash == htab->tls_get_addr
8980 || hash == htab->tls_get_addr_fd)
8981 && section->has_tls_reloc
8982 && irela != internal_relocs)
8987 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
8988 irela - 1, input_bfd))
8989 goto error_ret_free_internal;
8994 /* Support for grouping stub sections. */
8995 id_sec = htab->stub_group[section->id].link_sec;
8997 /* Get the name of this stub. */
8998 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9000 goto error_ret_free_internal;
9002 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
9003 stub_name, FALSE, FALSE);
9004 if (stub_entry != NULL)
9006 /* The proper stub has already been created. */
9011 stub_entry = ppc_add_stub (stub_name, section, htab);
9012 if (stub_entry == NULL)
9015 error_ret_free_internal:
9016 if (elf_section_data (section)->relocs == NULL)
9017 free (internal_relocs);
9018 error_ret_free_local:
9019 if (local_syms != NULL
9020 && (symtab_hdr->contents
9021 != (unsigned char *) local_syms))
9026 stub_entry->stub_type = stub_type;
9027 stub_entry->target_value = sym_value;
9028 stub_entry->target_section = code_sec;
9029 stub_entry->h = hash;
9030 stub_entry->addend = irela->r_addend;
9032 if (stub_entry->h != NULL)
9033 htab->stub_globals += 1;
9035 stub_changed = TRUE;
9038 /* We're done with the internal relocs, free them. */
9039 if (elf_section_data (section)->relocs != internal_relocs)
9040 free (internal_relocs);
9043 if (local_syms != NULL
9044 && symtab_hdr->contents != (unsigned char *) local_syms)
9046 if (!info->keep_memory)
9049 symtab_hdr->contents = (unsigned char *) local_syms;
9056 /* OK, we've added some stubs. Find out the new size of the
9058 for (stub_sec = htab->stub_bfd->sections;
9060 stub_sec = stub_sec->next)
9061 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9064 stub_sec->reloc_count = 0;
9067 htab->brlt->size = 0;
9068 if (htab->relbrlt != NULL)
9069 htab->relbrlt->size = 0;
9071 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
9073 /* Ask the linker to do its stuff. */
9074 (*htab->layout_sections_again) ();
9077 /* It would be nice to strip .branch_lt from the output if the
9078 section is empty, but it's too late. If we strip sections here,
9079 the dynamic symbol table is corrupted since the section symbol
9080 for the stripped section isn't written. */
9085 /* Called after we have determined section placement. If sections
9086 move, we'll be called again. Provide a value for TOCstart. */
9089 ppc64_elf_toc (bfd *obfd)
9094 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9095 order. The TOC starts where the first of these sections starts. */
9096 s = bfd_get_section_by_name (obfd, ".got");
9098 s = bfd_get_section_by_name (obfd, ".toc");
9100 s = bfd_get_section_by_name (obfd, ".tocbss");
9102 s = bfd_get_section_by_name (obfd, ".plt");
9105 /* This may happen for
9106 o references to TOC base (SYM@toc / TOC[tc0]) without a
9109 o --gc-sections and empty TOC sections
9111 FIXME: Warn user? */
9113 /* Look for a likely section. We probably won't even be
9115 for (s = obfd->sections; s != NULL; s = s->next)
9116 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9117 == (SEC_ALLOC | SEC_SMALL_DATA))
9120 for (s = obfd->sections; s != NULL; s = s->next)
9121 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9122 == (SEC_ALLOC | SEC_SMALL_DATA))
9125 for (s = obfd->sections; s != NULL; s = s->next)
9126 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9129 for (s = obfd->sections; s != NULL; s = s->next)
9130 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9136 TOCstart = s->output_section->vma + s->output_offset;
9141 /* Build all the stubs associated with the current output file.
9142 The stubs are kept in a hash table attached to the main linker
9143 hash table. This function is called via gldelf64ppc_finish. */
9146 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9147 struct bfd_link_info *info,
9150 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9153 int stub_sec_count = 0;
9155 htab->emit_stub_syms = emit_stub_syms;
9157 /* Allocate memory to hold the linker stubs. */
9158 for (stub_sec = htab->stub_bfd->sections;
9160 stub_sec = stub_sec->next)
9161 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9162 && stub_sec->size != 0)
9164 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9165 if (stub_sec->contents == NULL)
9167 /* We want to check that built size is the same as calculated
9168 size. rawsize is a convenient location to use. */
9169 stub_sec->rawsize = stub_sec->size;
9173 if (htab->plt != NULL)
9178 /* Build the .glink plt call stub. */
9179 plt0 = (htab->plt->output_section->vma
9180 + htab->plt->output_offset
9181 - (htab->glink->output_section->vma
9182 + htab->glink->output_offset
9183 + GLINK_CALL_STUB_SIZE));
9184 if (plt0 + 0x80008000 > 0xffffffff)
9186 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9187 bfd_set_error (bfd_error_bad_value);
9191 if (htab->emit_stub_syms)
9193 struct elf_link_hash_entry *h;
9194 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9197 if (h->root.type == bfd_link_hash_new)
9199 h->root.type = bfd_link_hash_defined;
9200 h->root.u.def.section = htab->glink;
9201 h->root.u.def.value = 0;
9204 h->ref_regular_nonweak = 1;
9205 h->forced_local = 1;
9209 p = htab->glink->contents;
9210 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
9212 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
9214 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
9216 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9218 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
9220 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
9222 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
9224 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9226 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
9228 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
9230 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
9232 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
9234 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
9236 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
9238 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
9240 bfd_put_32 (htab->glink->owner, BCTR, p);
9243 /* Build the .glink lazy link call stubs. */
9245 while (p < htab->glink->contents + htab->glink->size)
9249 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9254 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9256 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9259 bfd_put_32 (htab->glink->owner,
9260 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
9264 htab->glink->rawsize = p - htab->glink->contents;
9267 if (htab->brlt->size != 0)
9269 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
9271 if (htab->brlt->contents == NULL)
9274 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
9276 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
9277 htab->relbrlt->size);
9278 if (htab->relbrlt->contents == NULL)
9282 /* Build the stubs as directed by the stub hash table. */
9283 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
9285 for (stub_sec = htab->stub_bfd->sections;
9287 stub_sec = stub_sec->next)
9288 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9290 stub_sec_count += 1;
9291 if (stub_sec->rawsize != stub_sec->size)
9295 if (stub_sec != NULL
9296 || htab->glink->rawsize != htab->glink->size)
9298 htab->stub_error = TRUE;
9299 (*_bfd_error_handler) (_("stubs don't match calculated size"));
9302 if (htab->stub_error)
9307 *stats = bfd_malloc (500);
9311 sprintf (*stats, _("linker stubs in %u group%s\n"
9314 " long branch %lu\n"
9315 " long toc adj %lu\n"
9318 stub_sec_count == 1 ? "" : "s",
9319 htab->stub_count[ppc_stub_long_branch - 1],
9320 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9321 htab->stub_count[ppc_stub_plt_branch - 1],
9322 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9323 htab->stub_count[ppc_stub_plt_call - 1]);
9328 /* This function undoes the changes made by add_symbol_adjust. */
9331 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9333 struct ppc_link_hash_entry *eh;
9335 if (h->root.type == bfd_link_hash_indirect)
9338 if (h->root.type == bfd_link_hash_warning)
9339 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9341 eh = (struct ppc_link_hash_entry *) h;
9342 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9345 eh->elf.root.type = bfd_link_hash_undefined;
9350 ppc64_elf_restore_symbols (struct bfd_link_info *info)
9352 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9353 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9356 /* The RELOCATE_SECTION function is called by the ELF backend linker
9357 to handle the relocations for a section.
9359 The relocs are always passed as Rela structures; if the section
9360 actually uses Rel structures, the r_addend field will always be
9363 This function is responsible for adjust the section contents as
9364 necessary, and (if using Rela relocs and generating a
9365 relocatable output file) adjusting the reloc addend as
9368 This function does not have to worry about setting the reloc
9369 address or the reloc symbol index.
9371 LOCAL_SYMS is a pointer to the swapped in local symbols.
9373 LOCAL_SECTIONS is an array giving the section in the input file
9374 corresponding to the st_shndx field of each local symbol.
9376 The global hash table entry for the global symbols can be found
9377 via elf_sym_hashes (input_bfd).
9379 When generating relocatable output, this function must handle
9380 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9381 going to be the section symbol corresponding to the output
9382 section, which means that the addend must be adjusted
9386 ppc64_elf_relocate_section (bfd *output_bfd,
9387 struct bfd_link_info *info,
9389 asection *input_section,
9391 Elf_Internal_Rela *relocs,
9392 Elf_Internal_Sym *local_syms,
9393 asection **local_sections)
9395 struct ppc_link_hash_table *htab;
9396 Elf_Internal_Shdr *symtab_hdr;
9397 struct elf_link_hash_entry **sym_hashes;
9398 Elf_Internal_Rela *rel;
9399 Elf_Internal_Rela *relend;
9400 Elf_Internal_Rela outrel;
9402 struct got_entry **local_got_ents;
9404 bfd_boolean ret = TRUE;
9406 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9407 bfd_boolean is_power4 = FALSE;
9409 if (info->relocatable)
9412 /* Initialize howto table if needed. */
9413 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9416 htab = ppc_hash_table (info);
9418 /* Don't relocate stub sections. */
9419 if (input_section->owner == htab->stub_bfd)
9422 local_got_ents = elf_local_got_ents (input_bfd);
9423 TOCstart = elf_gp (output_bfd);
9424 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9425 sym_hashes = elf_sym_hashes (input_bfd);
9426 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
9429 relend = relocs + input_section->reloc_count;
9430 for (; rel < relend; rel++)
9432 enum elf_ppc64_reloc_type r_type;
9434 bfd_reloc_status_type r;
9435 Elf_Internal_Sym *sym;
9437 struct elf_link_hash_entry *h_elf;
9438 struct ppc_link_hash_entry *h;
9439 struct ppc_link_hash_entry *fdh;
9440 const char *sym_name;
9441 unsigned long r_symndx, toc_symndx;
9442 char tls_mask, tls_gd, tls_type;
9445 bfd_boolean unresolved_reloc;
9447 unsigned long insn, mask;
9448 struct ppc_stub_hash_entry *stub_entry;
9449 bfd_vma max_br_offset;
9452 r_type = ELF64_R_TYPE (rel->r_info);
9453 r_symndx = ELF64_R_SYM (rel->r_info);
9455 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9456 symbol of the previous ADDR64 reloc. The symbol gives us the
9457 proper TOC base to use. */
9458 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9460 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9462 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9468 unresolved_reloc = FALSE;
9471 if (r_symndx < symtab_hdr->sh_info)
9473 /* It's a local symbol. */
9476 sym = local_syms + r_symndx;
9477 sec = local_sections[r_symndx];
9478 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
9479 sym_type = ELF64_ST_TYPE (sym->st_info);
9480 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
9481 opd_adjust = get_opd_info (sec);
9482 if (opd_adjust != NULL)
9484 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
9488 relocation += adjust;
9493 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9494 r_symndx, symtab_hdr, sym_hashes,
9495 h_elf, sec, relocation,
9496 unresolved_reloc, warned);
9497 sym_name = h_elf->root.root.string;
9498 sym_type = h_elf->type;
9500 h = (struct ppc_link_hash_entry *) h_elf;
9502 /* TLS optimizations. Replace instruction sequences and relocs
9503 based on information we collected in tls_optimize. We edit
9504 RELOCS so that --emit-relocs will output something sensible
9505 for the final instruction stream. */
9509 if (IS_PPC64_TLS_RELOC (r_type))
9512 tls_mask = h->tls_mask;
9513 else if (local_got_ents != NULL)
9516 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9517 tls_mask = lgot_masks[r_symndx];
9519 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9521 /* Check for toc tls entries. */
9524 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9529 tls_mask = *toc_tls;
9533 /* Check that tls relocs are used with tls syms, and non-tls
9534 relocs are used with non-tls syms. */
9536 && r_type != R_PPC64_NONE
9538 || h->elf.root.type == bfd_link_hash_defined
9539 || h->elf.root.type == bfd_link_hash_defweak)
9540 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9542 if (r_type == R_PPC64_TLS && tls_mask != 0)
9543 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9546 (*_bfd_error_handler)
9547 (sym_type == STT_TLS
9548 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9549 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9552 (long) rel->r_offset,
9553 ppc64_elf_howto_table[r_type]->name,
9557 /* Ensure reloc mapping code below stays sane. */
9558 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9559 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9560 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9561 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9562 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9563 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9564 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9565 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9566 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9567 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9576 case R_PPC64_TOC16_LO:
9577 case R_PPC64_TOC16_DS:
9578 case R_PPC64_TOC16_LO_DS:
9580 /* Check for toc tls entries. */
9584 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9591 tls_mask = *toc_tls;
9592 if (r_type == R_PPC64_TOC16_DS
9593 || r_type == R_PPC64_TOC16_LO_DS)
9596 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9601 /* If we found a GD reloc pair, then we might be
9602 doing a GD->IE transition. */
9605 tls_gd = TLS_TPRELGD;
9606 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9607 goto tls_get_addr_check;
9609 else if (retval == 3)
9611 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9612 goto tls_get_addr_check;
9619 case R_PPC64_GOT_TPREL16_DS:
9620 case R_PPC64_GOT_TPREL16_LO_DS:
9622 && (tls_mask & TLS_TPREL) == 0)
9625 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9627 insn |= 0x3c0d0000; /* addis 0,13,0 */
9628 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9629 r_type = R_PPC64_TPREL16_HA;
9630 if (toc_symndx != 0)
9632 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9633 /* We changed the symbol. Start over in order to
9634 get h, sym, sec etc. right. */
9639 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9645 && (tls_mask & TLS_TPREL) == 0)
9648 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9649 if ((insn & ((0x3f << 26) | (31 << 11)))
9650 == ((31 << 26) | (13 << 11)))
9651 rtra = insn & ((1 << 26) - (1 << 16));
9652 else if ((insn & ((0x3f << 26) | (31 << 16)))
9653 == ((31 << 26) | (13 << 16)))
9654 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9657 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9660 else if ((insn & (31 << 1)) == 23 << 1
9661 && ((insn & (31 << 6)) < 14 << 6
9662 || ((insn & (31 << 6)) >= 16 << 6
9663 && (insn & (31 << 6)) < 24 << 6)))
9664 /* load and store indexed -> dform. */
9665 insn = (32 | ((insn >> 6) & 31)) << 26;
9666 else if ((insn & (31 << 1)) == 21 << 1
9667 && (insn & (0x1a << 6)) == 0)
9668 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9669 insn = (((58 | ((insn >> 6) & 4)) << 26)
9670 | ((insn >> 6) & 1));
9671 else if ((insn & (31 << 1)) == 21 << 1
9672 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9674 insn = (58 << 26) | 2;
9678 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9679 /* Was PPC64_TLS which sits on insn boundary, now
9680 PPC64_TPREL16_LO which is at insn+2. */
9682 r_type = R_PPC64_TPREL16_LO;
9683 if (toc_symndx != 0)
9685 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9686 /* We changed the symbol. Start over in order to
9687 get h, sym, sec etc. right. */
9692 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9696 case R_PPC64_GOT_TLSGD16_HI:
9697 case R_PPC64_GOT_TLSGD16_HA:
9698 tls_gd = TLS_TPRELGD;
9699 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9703 case R_PPC64_GOT_TLSLD16_HI:
9704 case R_PPC64_GOT_TLSLD16_HA:
9705 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9708 if ((tls_mask & tls_gd) != 0)
9709 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9710 + R_PPC64_GOT_TPREL16_DS);
9713 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9715 r_type = R_PPC64_NONE;
9717 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9721 case R_PPC64_GOT_TLSGD16:
9722 case R_PPC64_GOT_TLSGD16_LO:
9723 tls_gd = TLS_TPRELGD;
9724 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9725 goto tls_get_addr_check;
9728 case R_PPC64_GOT_TLSLD16:
9729 case R_PPC64_GOT_TLSLD16_LO:
9730 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9733 if (rel + 1 < relend)
9735 enum elf_ppc64_reloc_type r_type2;
9736 unsigned long r_symndx2;
9737 struct elf_link_hash_entry *h2;
9738 bfd_vma insn1, insn2, insn3;
9741 /* The next instruction should be a call to
9742 __tls_get_addr. Peek at the reloc to be sure. */
9743 r_type2 = ELF64_R_TYPE (rel[1].r_info);
9744 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9745 if (r_symndx2 < symtab_hdr->sh_info
9746 || (r_type2 != R_PPC64_REL14
9747 && r_type2 != R_PPC64_REL14_BRTAKEN
9748 && r_type2 != R_PPC64_REL14_BRNTAKEN
9749 && r_type2 != R_PPC64_REL24))
9752 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9753 while (h2->root.type == bfd_link_hash_indirect
9754 || h2->root.type == bfd_link_hash_warning)
9755 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
9756 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9757 && h2 != &htab->tls_get_addr_fd->elf))
9760 /* OK, it checks out. Replace the call. */
9761 offset = rel[1].r_offset;
9762 insn1 = bfd_get_32 (output_bfd,
9763 contents + rel->r_offset - 2);
9764 insn3 = bfd_get_32 (output_bfd,
9765 contents + offset + 4);
9766 if ((tls_mask & tls_gd) != 0)
9769 insn1 &= (1 << 26) - (1 << 2);
9770 insn1 |= 58 << 26; /* ld */
9771 insn2 = 0x7c636a14; /* add 3,3,13 */
9772 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9773 if ((tls_mask & TLS_EXPLICIT) == 0)
9774 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9775 + R_PPC64_GOT_TPREL16_DS);
9777 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9778 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9783 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9784 insn2 = 0x38630000; /* addi 3,3,0 */
9787 /* Was an LD reloc. */
9789 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9790 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9792 else if (toc_symndx != 0)
9793 r_symndx = toc_symndx;
9794 r_type = R_PPC64_TPREL16_HA;
9795 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9796 rel[1].r_info = ELF64_R_INFO (r_symndx,
9797 R_PPC64_TPREL16_LO);
9798 rel[1].r_offset += 2;
9801 || insn3 == CROR_151515 || insn3 == CROR_313131)
9805 rel[1].r_offset += 4;
9807 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9808 bfd_put_32 (output_bfd, insn2, contents + offset);
9809 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
9810 if (tls_gd == 0 || toc_symndx != 0)
9812 /* We changed the symbol. Start over in order
9813 to get h, sym, sec etc. right. */
9821 case R_PPC64_DTPMOD64:
9822 if (rel + 1 < relend
9823 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9824 && rel[1].r_offset == rel->r_offset + 8)
9826 if ((tls_mask & TLS_GD) == 0)
9828 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9829 if ((tls_mask & TLS_TPRELGD) != 0)
9830 r_type = R_PPC64_TPREL64;
9833 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9834 r_type = R_PPC64_NONE;
9836 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9841 if ((tls_mask & TLS_LD) == 0)
9843 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9844 r_type = R_PPC64_NONE;
9845 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9850 case R_PPC64_TPREL64:
9851 if ((tls_mask & TLS_TPREL) == 0)
9853 r_type = R_PPC64_NONE;
9854 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9859 /* Handle other relocations that tweak non-addend part of insn. */
9861 max_br_offset = 1 << 25;
9862 addend = rel->r_addend;
9868 /* Branch taken prediction relocations. */
9869 case R_PPC64_ADDR14_BRTAKEN:
9870 case R_PPC64_REL14_BRTAKEN:
9871 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9874 /* Branch not taken prediction relocations. */
9875 case R_PPC64_ADDR14_BRNTAKEN:
9876 case R_PPC64_REL14_BRNTAKEN:
9877 insn |= bfd_get_32 (output_bfd,
9878 contents + rel->r_offset) & ~(0x01 << 21);
9882 max_br_offset = 1 << 15;
9886 /* Calls to functions with a different TOC, such as calls to
9887 shared objects, need to alter the TOC pointer. This is
9888 done using a linkage stub. A REL24 branching to these
9889 linkage stubs needs to be followed by a nop, as the nop
9890 will be replaced with an instruction to restore the TOC
9895 && (((fdh = h->oh) != NULL
9896 && fdh->elf.plt.plist != NULL)
9897 || (fdh = h)->elf.plt.plist != NULL))
9899 && sec->output_section != NULL
9900 && sec->id <= htab->top_id
9901 && (htab->stub_group[sec->id].toc_off
9902 != htab->stub_group[input_section->id].toc_off)))
9903 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
9905 && (stub_entry->stub_type == ppc_stub_plt_call
9906 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9907 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
9909 bfd_boolean can_plt_call = FALSE;
9911 if (rel->r_offset + 8 <= input_section->size)
9914 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9916 || nop == CROR_151515 || nop == CROR_313131)
9918 bfd_put_32 (input_bfd, LD_R2_40R1,
9919 contents + rel->r_offset + 4);
9920 can_plt_call = TRUE;
9926 if (stub_entry->stub_type == ppc_stub_plt_call)
9928 /* If this is a plain branch rather than a branch
9929 and link, don't require a nop. */
9931 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9933 can_plt_call = TRUE;
9936 && strcmp (h->elf.root.root.string,
9937 ".__libc_start_main") == 0)
9939 /* Allow crt1 branch to go via a toc adjusting stub. */
9940 can_plt_call = TRUE;
9944 if (strcmp (input_section->output_section->name,
9946 || strcmp (input_section->output_section->name,
9948 (*_bfd_error_handler)
9949 (_("%B(%A+0x%lx): automatic multiple TOCs "
9950 "not supported using your crt files; "
9951 "recompile with -mminimal-toc or upgrade gcc"),
9954 (long) rel->r_offset);
9956 (*_bfd_error_handler)
9957 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
9958 "does not allow automatic multiple TOCs; "
9959 "recompile with -mminimal-toc or "
9960 "-fno-optimize-sibling-calls, "
9961 "or make `%s' extern"),
9964 (long) rel->r_offset,
9967 bfd_set_error (bfd_error_bad_value);
9973 && stub_entry->stub_type == ppc_stub_plt_call)
9974 unresolved_reloc = FALSE;
9977 if (stub_entry == NULL
9978 && get_opd_info (sec) != NULL)
9980 /* The branch destination is the value of the opd entry. */
9981 bfd_vma off = (relocation - sec->output_section->vma
9982 - sec->output_offset + rel->r_addend);
9983 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
9984 if (dest != (bfd_vma) -1)
9991 /* If the branch is out of reach we ought to have a long
9993 from = (rel->r_offset
9994 + input_section->output_offset
9995 + input_section->output_section->vma);
9997 if (stub_entry == NULL
9998 && (relocation + rel->r_addend - from + max_br_offset
9999 >= 2 * max_br_offset)
10000 && r_type != R_PPC64_ADDR14_BRTAKEN
10001 && r_type != R_PPC64_ADDR14_BRNTAKEN)
10002 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10005 if (stub_entry != NULL)
10007 /* Munge up the value and addend so that we call the stub
10008 rather than the procedure directly. */
10009 relocation = (stub_entry->stub_offset
10010 + stub_entry->stub_sec->output_offset
10011 + stub_entry->stub_sec->output_section->vma);
10019 /* Set 'a' bit. This is 0b00010 in BO field for branch
10020 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10021 for branch on CTR insns (BO == 1a00t or 1a01t). */
10022 if ((insn & (0x14 << 21)) == (0x04 << 21))
10023 insn |= 0x02 << 21;
10024 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10025 insn |= 0x08 << 21;
10031 /* Invert 'y' bit if not the default. */
10032 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
10033 insn ^= 0x01 << 21;
10036 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
10039 /* NOP out calls to undefined weak functions.
10040 We can thus call a weak function without first
10041 checking whether the function is defined. */
10043 && h->elf.root.type == bfd_link_hash_undefweak
10044 && r_type == R_PPC64_REL24
10046 && rel->r_addend == 0)
10048 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10054 /* Set `addend'. */
10059 (*_bfd_error_handler)
10060 (_("%B: unknown relocation type %d for symbol %s"),
10061 input_bfd, (int) r_type, sym_name);
10063 bfd_set_error (bfd_error_bad_value);
10069 case R_PPC64_GNU_VTINHERIT:
10070 case R_PPC64_GNU_VTENTRY:
10073 /* GOT16 relocations. Like an ADDR16 using the symbol's
10074 address in the GOT as relocation value instead of the
10075 symbol's value itself. Also, create a GOT entry for the
10076 symbol and put the symbol value there. */
10077 case R_PPC64_GOT_TLSGD16:
10078 case R_PPC64_GOT_TLSGD16_LO:
10079 case R_PPC64_GOT_TLSGD16_HI:
10080 case R_PPC64_GOT_TLSGD16_HA:
10081 tls_type = TLS_TLS | TLS_GD;
10084 case R_PPC64_GOT_TLSLD16:
10085 case R_PPC64_GOT_TLSLD16_LO:
10086 case R_PPC64_GOT_TLSLD16_HI:
10087 case R_PPC64_GOT_TLSLD16_HA:
10088 tls_type = TLS_TLS | TLS_LD;
10091 case R_PPC64_GOT_TPREL16_DS:
10092 case R_PPC64_GOT_TPREL16_LO_DS:
10093 case R_PPC64_GOT_TPREL16_HI:
10094 case R_PPC64_GOT_TPREL16_HA:
10095 tls_type = TLS_TLS | TLS_TPREL;
10098 case R_PPC64_GOT_DTPREL16_DS:
10099 case R_PPC64_GOT_DTPREL16_LO_DS:
10100 case R_PPC64_GOT_DTPREL16_HI:
10101 case R_PPC64_GOT_DTPREL16_HA:
10102 tls_type = TLS_TLS | TLS_DTPREL;
10105 case R_PPC64_GOT16:
10106 case R_PPC64_GOT16_LO:
10107 case R_PPC64_GOT16_HI:
10108 case R_PPC64_GOT16_HA:
10109 case R_PPC64_GOT16_DS:
10110 case R_PPC64_GOT16_LO_DS:
10113 /* Relocation is to the entry for this symbol in the global
10118 unsigned long indx = 0;
10120 if (tls_type == (TLS_TLS | TLS_LD)
10122 || !h->elf.def_dynamic))
10123 offp = &ppc64_tlsld_got (input_bfd)->offset;
10126 struct got_entry *ent;
10130 bfd_boolean dyn = htab->elf.dynamic_sections_created;
10131 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10134 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
10135 /* This is actually a static link, or it is a
10136 -Bsymbolic link and the symbol is defined
10137 locally, or the symbol was forced to be local
10138 because of a version file. */
10142 indx = h->elf.dynindx;
10143 unresolved_reloc = FALSE;
10145 ent = h->elf.got.glist;
10149 if (local_got_ents == NULL)
10151 ent = local_got_ents[r_symndx];
10154 for (; ent != NULL; ent = ent->next)
10155 if (ent->addend == rel->r_addend
10156 && ent->owner == input_bfd
10157 && ent->tls_type == tls_type)
10161 offp = &ent->got.offset;
10164 got = ppc64_elf_tdata (input_bfd)->got;
10168 /* The offset must always be a multiple of 8. We use the
10169 least significant bit to record whether we have already
10170 processed this entry. */
10172 if ((off & 1) != 0)
10176 /* Generate relocs for the dynamic linker, except in
10177 the case of TLSLD where we'll use one entry per
10179 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10182 if ((info->shared || indx != 0)
10184 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10185 || h->elf.root.type != bfd_link_hash_undefweak))
10187 outrel.r_offset = (got->output_section->vma
10188 + got->output_offset
10190 outrel.r_addend = rel->r_addend;
10191 if (tls_type & (TLS_LD | TLS_GD))
10193 outrel.r_addend = 0;
10194 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
10195 if (tls_type == (TLS_TLS | TLS_GD))
10197 loc = relgot->contents;
10198 loc += (relgot->reloc_count++
10199 * sizeof (Elf64_External_Rela));
10200 bfd_elf64_swap_reloca_out (output_bfd,
10202 outrel.r_offset += 8;
10203 outrel.r_addend = rel->r_addend;
10205 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10208 else if (tls_type == (TLS_TLS | TLS_DTPREL))
10209 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10210 else if (tls_type == (TLS_TLS | TLS_TPREL))
10211 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10212 else if (indx == 0)
10214 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10216 /* Write the .got section contents for the sake
10218 loc = got->contents + off;
10219 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10223 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
10225 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
10227 outrel.r_addend += relocation;
10228 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
10229 outrel.r_addend -= htab->elf.tls_sec->vma;
10231 loc = relgot->contents;
10232 loc += (relgot->reloc_count++
10233 * sizeof (Elf64_External_Rela));
10234 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10237 /* Init the .got section contents here if we're not
10238 emitting a reloc. */
10241 relocation += rel->r_addend;
10242 if (tls_type == (TLS_TLS | TLS_LD))
10244 else if (tls_type != 0)
10246 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
10247 if (tls_type == (TLS_TLS | TLS_TPREL))
10248 relocation += DTP_OFFSET - TP_OFFSET;
10250 if (tls_type == (TLS_TLS | TLS_GD))
10252 bfd_put_64 (output_bfd, relocation,
10253 got->contents + off + 8);
10258 bfd_put_64 (output_bfd, relocation,
10259 got->contents + off);
10263 if (off >= (bfd_vma) -2)
10266 relocation = got->output_offset + off;
10268 /* TOC base (r2) is TOC start plus 0x8000. */
10269 addend = -TOC_BASE_OFF;
10273 case R_PPC64_PLT16_HA:
10274 case R_PPC64_PLT16_HI:
10275 case R_PPC64_PLT16_LO:
10276 case R_PPC64_PLT32:
10277 case R_PPC64_PLT64:
10278 /* Relocation is to the entry for this symbol in the
10279 procedure linkage table. */
10281 /* Resolve a PLT reloc against a local symbol directly,
10282 without using the procedure linkage table. */
10286 /* It's possible that we didn't make a PLT entry for this
10287 symbol. This happens when statically linking PIC code,
10288 or when using -Bsymbolic. Go find a match if there is a
10290 if (htab->plt != NULL)
10292 struct plt_entry *ent;
10293 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
10294 if (ent->addend == rel->r_addend
10295 && ent->plt.offset != (bfd_vma) -1)
10297 relocation = (htab->plt->output_section->vma
10298 + htab->plt->output_offset
10299 + ent->plt.offset);
10300 unresolved_reloc = FALSE;
10306 /* Relocation value is TOC base. */
10307 relocation = TOCstart;
10309 relocation += htab->stub_group[input_section->id].toc_off;
10310 else if (unresolved_reloc)
10312 else if (sec != NULL && sec->id <= htab->top_id)
10313 relocation += htab->stub_group[sec->id].toc_off;
10315 unresolved_reloc = TRUE;
10318 /* TOC16 relocs. We want the offset relative to the TOC base,
10319 which is the address of the start of the TOC plus 0x8000.
10320 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10322 case R_PPC64_TOC16:
10323 case R_PPC64_TOC16_LO:
10324 case R_PPC64_TOC16_HI:
10325 case R_PPC64_TOC16_DS:
10326 case R_PPC64_TOC16_LO_DS:
10327 case R_PPC64_TOC16_HA:
10328 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
10331 /* Relocate against the beginning of the section. */
10332 case R_PPC64_SECTOFF:
10333 case R_PPC64_SECTOFF_LO:
10334 case R_PPC64_SECTOFF_HI:
10335 case R_PPC64_SECTOFF_DS:
10336 case R_PPC64_SECTOFF_LO_DS:
10337 case R_PPC64_SECTOFF_HA:
10339 addend -= sec->output_section->vma;
10342 case R_PPC64_REL14:
10343 case R_PPC64_REL14_BRNTAKEN:
10344 case R_PPC64_REL14_BRTAKEN:
10345 case R_PPC64_REL24:
10348 case R_PPC64_TPREL16:
10349 case R_PPC64_TPREL16_LO:
10350 case R_PPC64_TPREL16_HI:
10351 case R_PPC64_TPREL16_HA:
10352 case R_PPC64_TPREL16_DS:
10353 case R_PPC64_TPREL16_LO_DS:
10354 case R_PPC64_TPREL16_HIGHER:
10355 case R_PPC64_TPREL16_HIGHERA:
10356 case R_PPC64_TPREL16_HIGHEST:
10357 case R_PPC64_TPREL16_HIGHESTA:
10358 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10360 /* The TPREL16 relocs shouldn't really be used in shared
10361 libs as they will result in DT_TEXTREL being set, but
10362 support them anyway. */
10366 case R_PPC64_DTPREL16:
10367 case R_PPC64_DTPREL16_LO:
10368 case R_PPC64_DTPREL16_HI:
10369 case R_PPC64_DTPREL16_HA:
10370 case R_PPC64_DTPREL16_DS:
10371 case R_PPC64_DTPREL16_LO_DS:
10372 case R_PPC64_DTPREL16_HIGHER:
10373 case R_PPC64_DTPREL16_HIGHERA:
10374 case R_PPC64_DTPREL16_HIGHEST:
10375 case R_PPC64_DTPREL16_HIGHESTA:
10376 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10379 case R_PPC64_DTPMOD64:
10384 case R_PPC64_TPREL64:
10385 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10388 case R_PPC64_DTPREL64:
10389 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10392 /* Relocations that may need to be propagated if this is a
10394 case R_PPC64_REL30:
10395 case R_PPC64_REL32:
10396 case R_PPC64_REL64:
10397 case R_PPC64_ADDR14:
10398 case R_PPC64_ADDR14_BRNTAKEN:
10399 case R_PPC64_ADDR14_BRTAKEN:
10400 case R_PPC64_ADDR16:
10401 case R_PPC64_ADDR16_DS:
10402 case R_PPC64_ADDR16_HA:
10403 case R_PPC64_ADDR16_HI:
10404 case R_PPC64_ADDR16_HIGHER:
10405 case R_PPC64_ADDR16_HIGHERA:
10406 case R_PPC64_ADDR16_HIGHEST:
10407 case R_PPC64_ADDR16_HIGHESTA:
10408 case R_PPC64_ADDR16_LO:
10409 case R_PPC64_ADDR16_LO_DS:
10410 case R_PPC64_ADDR24:
10411 case R_PPC64_ADDR32:
10412 case R_PPC64_ADDR64:
10413 case R_PPC64_UADDR16:
10414 case R_PPC64_UADDR32:
10415 case R_PPC64_UADDR64:
10416 /* r_symndx will be zero only for relocs against symbols
10417 from removed linkonce sections, or sections discarded by
10418 a linker script. */
10425 if ((input_section->flags & SEC_ALLOC) == 0)
10428 if (NO_OPD_RELOCS && is_opd)
10433 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10434 || h->elf.root.type != bfd_link_hash_undefweak)
10435 && (MUST_BE_DYN_RELOC (r_type)
10436 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
10437 || (ELIMINATE_COPY_RELOCS
10440 && h->elf.dynindx != -1
10441 && !h->elf.non_got_ref
10442 && h->elf.def_dynamic
10443 && !h->elf.def_regular))
10445 Elf_Internal_Rela outrel;
10446 bfd_boolean skip, relocate;
10451 /* When generating a dynamic object, these relocations
10452 are copied into the output file to be resolved at run
10458 out_off = _bfd_elf_section_offset (output_bfd, info,
10459 input_section, rel->r_offset);
10460 if (out_off == (bfd_vma) -1)
10462 else if (out_off == (bfd_vma) -2)
10463 skip = TRUE, relocate = TRUE;
10464 out_off += (input_section->output_section->vma
10465 + input_section->output_offset);
10466 outrel.r_offset = out_off;
10467 outrel.r_addend = rel->r_addend;
10469 /* Optimize unaligned reloc use. */
10470 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10471 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10472 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10473 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10474 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10475 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10476 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10477 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10478 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10481 memset (&outrel, 0, sizeof outrel);
10482 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
10484 && r_type != R_PPC64_TOC)
10485 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
10488 /* This symbol is local, or marked to become local,
10489 or this is an opd section reloc which must point
10490 at a local function. */
10491 outrel.r_addend += relocation;
10492 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
10494 if (is_opd && h != NULL)
10496 /* Lie about opd entries. This case occurs
10497 when building shared libraries and we
10498 reference a function in another shared
10499 lib. The same thing happens for a weak
10500 definition in an application that's
10501 overridden by a strong definition in a
10502 shared lib. (I believe this is a generic
10503 bug in binutils handling of weak syms.)
10504 In these cases we won't use the opd
10505 entry in this lib. */
10506 unresolved_reloc = FALSE;
10508 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10510 /* We need to relocate .opd contents for ld.so.
10511 Prelink also wants simple and consistent rules
10512 for relocs. This make all RELATIVE relocs have
10513 *r_offset equal to r_addend. */
10520 if (bfd_is_abs_section (sec))
10522 else if (sec == NULL || sec->owner == NULL)
10524 bfd_set_error (bfd_error_bad_value);
10531 osec = sec->output_section;
10532 indx = elf_section_data (osec)->dynindx;
10534 /* We are turning this relocation into one
10535 against a section symbol, so subtract out
10536 the output section's address but not the
10537 offset of the input section in the output
10539 outrel.r_addend -= osec->vma;
10542 outrel.r_info = ELF64_R_INFO (indx, r_type);
10546 sreloc = elf_section_data (input_section)->sreloc;
10547 if (sreloc == NULL)
10550 loc = sreloc->contents;
10551 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
10552 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10554 /* If this reloc is against an external symbol, it will
10555 be computed at runtime, so there's no need to do
10556 anything now. However, for the sake of prelink ensure
10557 that the section contents are a known value. */
10560 unresolved_reloc = FALSE;
10561 /* The value chosen here is quite arbitrary as ld.so
10562 ignores section contents except for the special
10563 case of .opd where the contents might be accessed
10564 before relocation. Choose zero, as that won't
10565 cause reloc overflow. */
10568 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10569 to improve backward compatibility with older
10571 if (r_type == R_PPC64_ADDR64)
10572 addend = outrel.r_addend;
10573 /* Adjust pc_relative relocs to have zero in *r_offset. */
10574 else if (ppc64_elf_howto_table[r_type]->pc_relative)
10575 addend = (input_section->output_section->vma
10576 + input_section->output_offset
10583 case R_PPC64_GLOB_DAT:
10584 case R_PPC64_JMP_SLOT:
10585 case R_PPC64_RELATIVE:
10586 /* We shouldn't ever see these dynamic relocs in relocatable
10588 /* Fall through. */
10590 case R_PPC64_PLTGOT16:
10591 case R_PPC64_PLTGOT16_DS:
10592 case R_PPC64_PLTGOT16_HA:
10593 case R_PPC64_PLTGOT16_HI:
10594 case R_PPC64_PLTGOT16_LO:
10595 case R_PPC64_PLTGOT16_LO_DS:
10596 case R_PPC64_PLTREL32:
10597 case R_PPC64_PLTREL64:
10598 /* These ones haven't been implemented yet. */
10600 (*_bfd_error_handler)
10601 (_("%B: relocation %s is not supported for symbol %s."),
10603 ppc64_elf_howto_table[r_type]->name, sym_name);
10605 bfd_set_error (bfd_error_invalid_operation);
10610 /* Do any further special processing. */
10616 case R_PPC64_ADDR16_HA:
10617 case R_PPC64_ADDR16_HIGHERA:
10618 case R_PPC64_ADDR16_HIGHESTA:
10619 case R_PPC64_GOT16_HA:
10620 case R_PPC64_PLTGOT16_HA:
10621 case R_PPC64_PLT16_HA:
10622 case R_PPC64_TOC16_HA:
10623 case R_PPC64_SECTOFF_HA:
10624 case R_PPC64_TPREL16_HA:
10625 case R_PPC64_DTPREL16_HA:
10626 case R_PPC64_GOT_TLSGD16_HA:
10627 case R_PPC64_GOT_TLSLD16_HA:
10628 case R_PPC64_GOT_TPREL16_HA:
10629 case R_PPC64_GOT_DTPREL16_HA:
10630 case R_PPC64_TPREL16_HIGHER:
10631 case R_PPC64_TPREL16_HIGHERA:
10632 case R_PPC64_TPREL16_HIGHEST:
10633 case R_PPC64_TPREL16_HIGHESTA:
10634 case R_PPC64_DTPREL16_HIGHER:
10635 case R_PPC64_DTPREL16_HIGHERA:
10636 case R_PPC64_DTPREL16_HIGHEST:
10637 case R_PPC64_DTPREL16_HIGHESTA:
10638 /* It's just possible that this symbol is a weak symbol
10639 that's not actually defined anywhere. In that case,
10640 'sec' would be NULL, and we should leave the symbol
10641 alone (it will be set to zero elsewhere in the link). */
10643 /* Add 0x10000 if sign bit in 0:15 is set.
10644 Bits 0:15 are not used. */
10648 case R_PPC64_ADDR16_DS:
10649 case R_PPC64_ADDR16_LO_DS:
10650 case R_PPC64_GOT16_DS:
10651 case R_PPC64_GOT16_LO_DS:
10652 case R_PPC64_PLT16_LO_DS:
10653 case R_PPC64_SECTOFF_DS:
10654 case R_PPC64_SECTOFF_LO_DS:
10655 case R_PPC64_TOC16_DS:
10656 case R_PPC64_TOC16_LO_DS:
10657 case R_PPC64_PLTGOT16_DS:
10658 case R_PPC64_PLTGOT16_LO_DS:
10659 case R_PPC64_GOT_TPREL16_DS:
10660 case R_PPC64_GOT_TPREL16_LO_DS:
10661 case R_PPC64_GOT_DTPREL16_DS:
10662 case R_PPC64_GOT_DTPREL16_LO_DS:
10663 case R_PPC64_TPREL16_DS:
10664 case R_PPC64_TPREL16_LO_DS:
10665 case R_PPC64_DTPREL16_DS:
10666 case R_PPC64_DTPREL16_LO_DS:
10667 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10669 /* If this reloc is against an lq insn, then the value must be
10670 a multiple of 16. This is somewhat of a hack, but the
10671 "correct" way to do this by defining _DQ forms of all the
10672 _DS relocs bloats all reloc switches in this file. It
10673 doesn't seem to make much sense to use any of these relocs
10674 in data, so testing the insn should be safe. */
10675 if ((insn & (0x3f << 26)) == (56u << 26))
10677 if (((relocation + addend) & mask) != 0)
10679 (*_bfd_error_handler)
10680 (_("%B: error: relocation %s not a multiple of %d"),
10682 ppc64_elf_howto_table[r_type]->name,
10684 bfd_set_error (bfd_error_bad_value);
10691 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10692 because such sections are not SEC_ALLOC and thus ld.so will
10693 not process them. */
10694 if (unresolved_reloc
10695 && !((input_section->flags & SEC_DEBUGGING) != 0
10696 && h->elf.def_dynamic))
10698 (*_bfd_error_handler)
10699 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10702 (long) rel->r_offset,
10703 ppc64_elf_howto_table[(int) r_type]->name,
10704 h->elf.root.root.string);
10708 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
10716 if (r != bfd_reloc_ok)
10718 if (sym_name == NULL)
10719 sym_name = "(null)";
10720 if (r == bfd_reloc_overflow)
10725 && h->elf.root.type == bfd_link_hash_undefweak
10726 && ppc64_elf_howto_table[r_type]->pc_relative)
10728 /* Assume this is a call protected by other code that
10729 detects the symbol is undefined. If this is the case,
10730 we can safely ignore the overflow. If not, the
10731 program is hosed anyway, and a little warning isn't
10737 if (!((*info->callbacks->reloc_overflow)
10738 (info, (h ? &h->elf.root : NULL), sym_name,
10739 ppc64_elf_howto_table[r_type]->name,
10740 rel->r_addend, input_bfd, input_section, rel->r_offset)))
10745 (*_bfd_error_handler)
10746 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10749 (long) rel->r_offset,
10750 ppc64_elf_howto_table[r_type]->name,
10758 /* If we're emitting relocations, then shortly after this function
10759 returns, reloc offsets and addends for this section will be
10760 adjusted. Worse, reloc symbol indices will be for the output
10761 file rather than the input. Save a copy of the relocs for
10762 opd_entry_value. */
10763 if (is_opd && info->emitrelocations)
10766 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10767 rel = bfd_alloc (input_bfd, amt);
10768 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10769 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10772 memcpy (rel, relocs, amt);
10777 /* Adjust the value of any local symbols in opd sections. */
10780 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10781 const char *name ATTRIBUTE_UNUSED,
10782 Elf_Internal_Sym *elfsym,
10783 asection *input_sec,
10784 struct elf_link_hash_entry *h)
10786 long *opd_adjust, adjust;
10792 opd_adjust = get_opd_info (input_sec);
10793 if (opd_adjust == NULL)
10796 value = elfsym->st_value - input_sec->output_offset;
10797 if (!info->relocatable)
10798 value -= input_sec->output_section->vma;
10800 adjust = opd_adjust[value / 8];
10802 elfsym->st_value = 0;
10804 elfsym->st_value += adjust;
10808 /* Finish up dynamic symbol handling. We set the contents of various
10809 dynamic sections here. */
10812 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10813 struct bfd_link_info *info,
10814 struct elf_link_hash_entry *h,
10815 Elf_Internal_Sym *sym)
10817 struct ppc_link_hash_table *htab;
10819 struct plt_entry *ent;
10820 Elf_Internal_Rela rela;
10823 htab = ppc_hash_table (info);
10824 dynobj = htab->elf.dynobj;
10826 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10827 if (ent->plt.offset != (bfd_vma) -1)
10829 /* This symbol has an entry in the procedure linkage
10830 table. Set it up. */
10832 if (htab->plt == NULL
10833 || htab->relplt == NULL
10834 || htab->glink == NULL)
10837 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10838 fill in the PLT entry. */
10839 rela.r_offset = (htab->plt->output_section->vma
10840 + htab->plt->output_offset
10841 + ent->plt.offset);
10842 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10843 rela.r_addend = ent->addend;
10845 loc = htab->relplt->contents;
10846 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10847 * sizeof (Elf64_External_Rela));
10848 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10853 Elf_Internal_Rela rela;
10856 /* This symbol needs a copy reloc. Set it up. */
10858 if (h->dynindx == -1
10859 || (h->root.type != bfd_link_hash_defined
10860 && h->root.type != bfd_link_hash_defweak)
10861 || htab->relbss == NULL)
10864 rela.r_offset = (h->root.u.def.value
10865 + h->root.u.def.section->output_section->vma
10866 + h->root.u.def.section->output_offset);
10867 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10869 loc = htab->relbss->contents;
10870 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
10871 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10874 /* Mark some specially defined symbols as absolute. */
10875 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10876 sym->st_shndx = SHN_ABS;
10881 /* Used to decide how to sort relocs in an optimal manner for the
10882 dynamic linker, before writing them out. */
10884 static enum elf_reloc_type_class
10885 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
10887 enum elf_ppc64_reloc_type r_type;
10889 r_type = ELF64_R_TYPE (rela->r_info);
10892 case R_PPC64_RELATIVE:
10893 return reloc_class_relative;
10894 case R_PPC64_JMP_SLOT:
10895 return reloc_class_plt;
10897 return reloc_class_copy;
10899 return reloc_class_normal;
10903 /* Finish up the dynamic sections. */
10906 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10907 struct bfd_link_info *info)
10909 struct ppc_link_hash_table *htab;
10913 htab = ppc_hash_table (info);
10914 dynobj = htab->elf.dynobj;
10915 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10917 if (htab->elf.dynamic_sections_created)
10919 Elf64_External_Dyn *dyncon, *dynconend;
10921 if (sdyn == NULL || htab->got == NULL)
10924 dyncon = (Elf64_External_Dyn *) sdyn->contents;
10925 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
10926 for (; dyncon < dynconend; dyncon++)
10928 Elf_Internal_Dyn dyn;
10931 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
10938 case DT_PPC64_GLINK:
10940 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10941 /* We stupidly defined DT_PPC64_GLINK to be the start
10942 of glink rather than the first entry point, which is
10943 what ld.so needs, and now have a bigger stub to
10944 support automatic multiple TOCs. */
10945 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
10949 s = bfd_get_section_by_name (output_bfd, ".opd");
10952 dyn.d_un.d_ptr = s->vma;
10955 case DT_PPC64_OPDSZ:
10956 s = bfd_get_section_by_name (output_bfd, ".opd");
10959 dyn.d_un.d_val = s->size;
10964 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10969 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
10973 dyn.d_un.d_val = htab->relplt->size;
10977 /* Don't count procedure linkage table relocs in the
10978 overall reloc count. */
10982 dyn.d_un.d_val -= s->size;
10986 /* We may not be using the standard ELF linker script.
10987 If .rela.plt is the first .rela section, we adjust
10988 DT_RELA to not include it. */
10992 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
10994 dyn.d_un.d_ptr += s->size;
10998 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
11002 if (htab->got != NULL && htab->got->size != 0)
11004 /* Fill in the first entry in the global offset table.
11005 We use it to hold the link-time TOCbase. */
11006 bfd_put_64 (output_bfd,
11007 elf_gp (output_bfd) + TOC_BASE_OFF,
11008 htab->got->contents);
11010 /* Set .got entry size. */
11011 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
11014 if (htab->plt != NULL && htab->plt->size != 0)
11016 /* Set .plt entry size. */
11017 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
11021 /* We need to handle writing out multiple GOT sections ourselves,
11022 since we didn't add them to DYNOBJ. We know dynobj is the first
11024 while ((dynobj = dynobj->link_next) != NULL)
11028 if (!is_ppc64_elf_target (dynobj->xvec))
11031 s = ppc64_elf_tdata (dynobj)->got;
11034 && s->output_section != bfd_abs_section_ptr
11035 && !bfd_set_section_contents (output_bfd, s->output_section,
11036 s->contents, s->output_offset,
11039 s = ppc64_elf_tdata (dynobj)->relgot;
11042 && s->output_section != bfd_abs_section_ptr
11043 && !bfd_set_section_contents (output_bfd, s->output_section,
11044 s->contents, s->output_offset,
11052 #include "elf64-target.h"