1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright (C) 1999-2017 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 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 */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
59 #define TARGET_LITTLE_SYM powerpc_elf64_le_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM powerpc_elf64_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x10000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_want_dynrelro 1
76 #define elf_backend_can_gc_sections 1
77 #define elf_backend_can_refcount 1
78 #define elf_backend_rela_normal 1
79 #define elf_backend_dtrel_excludes_plt 1
80 #define elf_backend_default_execstack 0
82 #define bfd_elf64_mkobject ppc64_elf_mkobject
83 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
84 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
85 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
86 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
87 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
88 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
89 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
90 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
91 #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections
93 #define elf_backend_object_p ppc64_elf_object_p
94 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
95 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
96 #define elf_backend_write_core_note ppc64_elf_write_core_note
97 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
98 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
99 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
100 #define elf_backend_check_directives ppc64_elf_before_check_relocs
101 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
102 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
103 #define elf_backend_check_relocs ppc64_elf_check_relocs
104 #define elf_backend_gc_keep ppc64_elf_gc_keep
105 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
106 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
107 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
108 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
109 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
110 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
111 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
112 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
113 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
114 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
115 #define elf_backend_action_discarded ppc64_elf_action_discarded
116 #define elf_backend_relocate_section ppc64_elf_relocate_section
117 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
118 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
119 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
120 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
121 #define elf_backend_special_sections ppc64_elf_special_sections
122 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 #define elf_backend_merge_symbol ppc64_elf_merge_symbol
125 /* The name of the dynamic interpreter. This is put in the .interp
127 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
129 /* The size in bytes of an entry in the procedure linkage table. */
130 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
132 /* The initial size of the plt reserved for the dynamic linker. */
133 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
135 /* Offsets to some stack save slots. */
137 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
138 /* This one is dodgy. ELFv2 does not have a linker word, so use the
139 CR save slot. Used only by optimised __tls_get_addr call stub,
140 relying on __tls_get_addr_opt not saving CR.. */
141 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
143 /* TOC base pointers offset from start of TOC. */
144 #define TOC_BASE_OFF 0x8000
145 /* TOC base alignment. */
146 #define TOC_BASE_ALIGN 256
148 /* Offset of tp and dtp pointers from start of TLS block. */
149 #define TP_OFFSET 0x7000
150 #define DTP_OFFSET 0x8000
152 /* .plt call stub instructions. The normal stub is like this, but
153 sometimes the .plt entry crosses a 64k boundary and we need to
154 insert an addi to adjust r11. */
155 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
156 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
157 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
158 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
159 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
160 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
161 #define BCTR 0x4e800420 /* bctr */
163 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
164 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
165 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
167 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
168 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
169 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
170 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
171 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
172 #define BNECTR 0x4ca20420 /* bnectr+ */
173 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
175 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
176 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
177 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
179 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
180 #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
181 #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
183 #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
184 #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
185 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
186 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
187 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
189 /* glink call stub instructions. We enter with the index in R0. */
190 #define GLINK_CALL_STUB_SIZE (16*4)
194 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
195 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
197 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
198 /* ld %2,(0b-1b)(%11) */
199 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
200 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
206 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
207 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
208 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
209 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
210 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
213 #define NOP 0x60000000
215 /* Some other nops. */
216 #define CROR_151515 0x4def7b82
217 #define CROR_313131 0x4ffffb82
219 /* .glink entries for the first 32k functions are two instructions. */
220 #define LI_R0_0 0x38000000 /* li %r0,0 */
221 #define B_DOT 0x48000000 /* b . */
223 /* After that, we need two instructions to load the index, followed by
225 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
226 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
228 /* Instructions used by the save and restore reg functions. */
229 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
230 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
231 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
232 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
233 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
234 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
235 #define LI_R12_0 0x39800000 /* li %r12,0 */
236 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
237 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
238 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
239 #define BLR 0x4e800020 /* blr */
241 /* Since .opd is an array of descriptors and each entry will end up
242 with identical R_PPC64_RELATIVE relocs, there is really no need to
243 propagate .opd relocs; The dynamic linker should be taught to
244 relocate .opd without reloc entries. */
245 #ifndef NO_OPD_RELOCS
246 #define NO_OPD_RELOCS 0
250 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
254 abiversion (bfd *abfd)
256 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
260 set_abiversion (bfd *abfd, int ver)
262 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
263 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
266 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
268 /* Relocation HOWTO's. */
269 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
271 static reloc_howto_type ppc64_elf_howto_raw[] = {
272 /* This reloc does nothing. */
273 HOWTO (R_PPC64_NONE, /* type */
275 3, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE, /* pc_relative */
279 complain_overflow_dont, /* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_PPC64_NONE", /* name */
282 FALSE, /* partial_inplace */
285 FALSE), /* pcrel_offset */
287 /* A standard 32 bit relocation. */
288 HOWTO (R_PPC64_ADDR32, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 FALSE, /* pc_relative */
294 complain_overflow_bitfield, /* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_PPC64_ADDR32", /* name */
297 FALSE, /* partial_inplace */
299 0xffffffff, /* dst_mask */
300 FALSE), /* pcrel_offset */
302 /* An absolute 26 bit branch; the lower two bits must be zero.
303 FIXME: we don't check that, we just clear them. */
304 HOWTO (R_PPC64_ADDR24, /* type */
306 2, /* size (0 = byte, 1 = short, 2 = long) */
308 FALSE, /* pc_relative */
310 complain_overflow_bitfield, /* complain_on_overflow */
311 bfd_elf_generic_reloc, /* special_function */
312 "R_PPC64_ADDR24", /* name */
313 FALSE, /* partial_inplace */
315 0x03fffffc, /* dst_mask */
316 FALSE), /* pcrel_offset */
318 /* A standard 16 bit relocation. */
319 HOWTO (R_PPC64_ADDR16, /* type */
321 1, /* size (0 = byte, 1 = short, 2 = long) */
323 FALSE, /* pc_relative */
325 complain_overflow_bitfield, /* complain_on_overflow */
326 bfd_elf_generic_reloc, /* special_function */
327 "R_PPC64_ADDR16", /* name */
328 FALSE, /* partial_inplace */
330 0xffff, /* dst_mask */
331 FALSE), /* pcrel_offset */
333 /* A 16 bit relocation without overflow. */
334 HOWTO (R_PPC64_ADDR16_LO, /* type */
336 1, /* size (0 = byte, 1 = short, 2 = long) */
338 FALSE, /* pc_relative */
340 complain_overflow_dont,/* complain_on_overflow */
341 bfd_elf_generic_reloc, /* special_function */
342 "R_PPC64_ADDR16_LO", /* name */
343 FALSE, /* partial_inplace */
345 0xffff, /* dst_mask */
346 FALSE), /* pcrel_offset */
348 /* Bits 16-31 of an address. */
349 HOWTO (R_PPC64_ADDR16_HI, /* type */
351 1, /* size (0 = byte, 1 = short, 2 = long) */
353 FALSE, /* pc_relative */
355 complain_overflow_signed, /* complain_on_overflow */
356 bfd_elf_generic_reloc, /* special_function */
357 "R_PPC64_ADDR16_HI", /* name */
358 FALSE, /* partial_inplace */
360 0xffff, /* dst_mask */
361 FALSE), /* pcrel_offset */
363 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
364 bits, treated as a signed number, is negative. */
365 HOWTO (R_PPC64_ADDR16_HA, /* type */
367 1, /* size (0 = byte, 1 = short, 2 = long) */
369 FALSE, /* pc_relative */
371 complain_overflow_signed, /* complain_on_overflow */
372 ppc64_elf_ha_reloc, /* special_function */
373 "R_PPC64_ADDR16_HA", /* name */
374 FALSE, /* partial_inplace */
376 0xffff, /* dst_mask */
377 FALSE), /* pcrel_offset */
379 /* An absolute 16 bit branch; the lower two bits must be zero.
380 FIXME: we don't check that, we just clear them. */
381 HOWTO (R_PPC64_ADDR14, /* type */
383 2, /* size (0 = byte, 1 = short, 2 = long) */
385 FALSE, /* pc_relative */
387 complain_overflow_signed, /* complain_on_overflow */
388 ppc64_elf_branch_reloc, /* special_function */
389 "R_PPC64_ADDR14", /* name */
390 FALSE, /* partial_inplace */
392 0x0000fffc, /* dst_mask */
393 FALSE), /* pcrel_offset */
395 /* An absolute 16 bit branch, for which bit 10 should be set to
396 indicate that the branch is expected to be taken. The lower two
397 bits must be zero. */
398 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
400 2, /* size (0 = byte, 1 = short, 2 = long) */
402 FALSE, /* pc_relative */
404 complain_overflow_signed, /* complain_on_overflow */
405 ppc64_elf_brtaken_reloc, /* special_function */
406 "R_PPC64_ADDR14_BRTAKEN",/* name */
407 FALSE, /* partial_inplace */
409 0x0000fffc, /* dst_mask */
410 FALSE), /* pcrel_offset */
412 /* An absolute 16 bit branch, for which bit 10 should be set to
413 indicate that the branch is not expected to be taken. The lower
414 two bits must be zero. */
415 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
417 2, /* size (0 = byte, 1 = short, 2 = long) */
419 FALSE, /* pc_relative */
421 complain_overflow_signed, /* complain_on_overflow */
422 ppc64_elf_brtaken_reloc, /* special_function */
423 "R_PPC64_ADDR14_BRNTAKEN",/* name */
424 FALSE, /* partial_inplace */
426 0x0000fffc, /* dst_mask */
427 FALSE), /* pcrel_offset */
429 /* A relative 26 bit branch; the lower two bits must be zero. */
430 HOWTO (R_PPC64_REL24, /* type */
432 2, /* size (0 = byte, 1 = short, 2 = long) */
434 TRUE, /* pc_relative */
436 complain_overflow_signed, /* complain_on_overflow */
437 ppc64_elf_branch_reloc, /* special_function */
438 "R_PPC64_REL24", /* name */
439 FALSE, /* partial_inplace */
441 0x03fffffc, /* dst_mask */
442 TRUE), /* pcrel_offset */
444 /* A relative 16 bit branch; the lower two bits must be zero. */
445 HOWTO (R_PPC64_REL14, /* type */
447 2, /* size (0 = byte, 1 = short, 2 = long) */
449 TRUE, /* pc_relative */
451 complain_overflow_signed, /* complain_on_overflow */
452 ppc64_elf_branch_reloc, /* special_function */
453 "R_PPC64_REL14", /* name */
454 FALSE, /* partial_inplace */
456 0x0000fffc, /* dst_mask */
457 TRUE), /* pcrel_offset */
459 /* A relative 16 bit branch. Bit 10 should be set to indicate that
460 the branch is expected to be taken. The lower two bits must be
462 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
464 2, /* size (0 = byte, 1 = short, 2 = long) */
466 TRUE, /* pc_relative */
468 complain_overflow_signed, /* complain_on_overflow */
469 ppc64_elf_brtaken_reloc, /* special_function */
470 "R_PPC64_REL14_BRTAKEN", /* name */
471 FALSE, /* partial_inplace */
473 0x0000fffc, /* dst_mask */
474 TRUE), /* pcrel_offset */
476 /* A relative 16 bit branch. Bit 10 should be set to indicate that
477 the branch is not expected to be taken. The lower two bits must
479 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
483 TRUE, /* pc_relative */
485 complain_overflow_signed, /* complain_on_overflow */
486 ppc64_elf_brtaken_reloc, /* special_function */
487 "R_PPC64_REL14_BRNTAKEN",/* name */
488 FALSE, /* partial_inplace */
490 0x0000fffc, /* dst_mask */
491 TRUE), /* pcrel_offset */
493 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
495 HOWTO (R_PPC64_GOT16, /* type */
497 1, /* size (0 = byte, 1 = short, 2 = long) */
499 FALSE, /* pc_relative */
501 complain_overflow_signed, /* complain_on_overflow */
502 ppc64_elf_unhandled_reloc, /* special_function */
503 "R_PPC64_GOT16", /* name */
504 FALSE, /* partial_inplace */
506 0xffff, /* dst_mask */
507 FALSE), /* pcrel_offset */
509 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
511 HOWTO (R_PPC64_GOT16_LO, /* type */
513 1, /* size (0 = byte, 1 = short, 2 = long) */
515 FALSE, /* pc_relative */
517 complain_overflow_dont, /* complain_on_overflow */
518 ppc64_elf_unhandled_reloc, /* special_function */
519 "R_PPC64_GOT16_LO", /* name */
520 FALSE, /* partial_inplace */
522 0xffff, /* dst_mask */
523 FALSE), /* pcrel_offset */
525 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
527 HOWTO (R_PPC64_GOT16_HI, /* type */
529 1, /* size (0 = byte, 1 = short, 2 = long) */
531 FALSE, /* pc_relative */
533 complain_overflow_signed,/* complain_on_overflow */
534 ppc64_elf_unhandled_reloc, /* special_function */
535 "R_PPC64_GOT16_HI", /* name */
536 FALSE, /* partial_inplace */
538 0xffff, /* dst_mask */
539 FALSE), /* pcrel_offset */
541 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
543 HOWTO (R_PPC64_GOT16_HA, /* type */
545 1, /* size (0 = byte, 1 = short, 2 = long) */
547 FALSE, /* pc_relative */
549 complain_overflow_signed,/* complain_on_overflow */
550 ppc64_elf_unhandled_reloc, /* special_function */
551 "R_PPC64_GOT16_HA", /* name */
552 FALSE, /* partial_inplace */
554 0xffff, /* dst_mask */
555 FALSE), /* pcrel_offset */
557 /* This is used only by the dynamic linker. The symbol should exist
558 both in the object being run and in some shared library. The
559 dynamic linker copies the data addressed by the symbol from the
560 shared library into the object, because the object being
561 run has to have the data at some particular address. */
562 HOWTO (R_PPC64_COPY, /* type */
564 0, /* this one is variable size */
566 FALSE, /* pc_relative */
568 complain_overflow_dont, /* complain_on_overflow */
569 ppc64_elf_unhandled_reloc, /* special_function */
570 "R_PPC64_COPY", /* name */
571 FALSE, /* partial_inplace */
574 FALSE), /* pcrel_offset */
576 /* Like R_PPC64_ADDR64, but used when setting global offset table
578 HOWTO (R_PPC64_GLOB_DAT, /* type */
580 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
582 FALSE, /* pc_relative */
584 complain_overflow_dont, /* complain_on_overflow */
585 ppc64_elf_unhandled_reloc, /* special_function */
586 "R_PPC64_GLOB_DAT", /* name */
587 FALSE, /* partial_inplace */
589 ONES (64), /* dst_mask */
590 FALSE), /* pcrel_offset */
592 /* Created by the link editor. Marks a procedure linkage table
593 entry for a symbol. */
594 HOWTO (R_PPC64_JMP_SLOT, /* type */
596 0, /* size (0 = byte, 1 = short, 2 = long) */
598 FALSE, /* pc_relative */
600 complain_overflow_dont, /* complain_on_overflow */
601 ppc64_elf_unhandled_reloc, /* special_function */
602 "R_PPC64_JMP_SLOT", /* name */
603 FALSE, /* partial_inplace */
606 FALSE), /* pcrel_offset */
608 /* Used only by the dynamic linker. When the object is run, this
609 doubleword64 is set to the load address of the object, plus the
611 HOWTO (R_PPC64_RELATIVE, /* type */
613 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
615 FALSE, /* pc_relative */
617 complain_overflow_dont, /* complain_on_overflow */
618 bfd_elf_generic_reloc, /* special_function */
619 "R_PPC64_RELATIVE", /* name */
620 FALSE, /* partial_inplace */
622 ONES (64), /* dst_mask */
623 FALSE), /* pcrel_offset */
625 /* Like R_PPC64_ADDR32, but may be unaligned. */
626 HOWTO (R_PPC64_UADDR32, /* type */
628 2, /* size (0 = byte, 1 = short, 2 = long) */
630 FALSE, /* pc_relative */
632 complain_overflow_bitfield, /* complain_on_overflow */
633 bfd_elf_generic_reloc, /* special_function */
634 "R_PPC64_UADDR32", /* name */
635 FALSE, /* partial_inplace */
637 0xffffffff, /* dst_mask */
638 FALSE), /* pcrel_offset */
640 /* Like R_PPC64_ADDR16, but may be unaligned. */
641 HOWTO (R_PPC64_UADDR16, /* type */
643 1, /* size (0 = byte, 1 = short, 2 = long) */
645 FALSE, /* pc_relative */
647 complain_overflow_bitfield, /* complain_on_overflow */
648 bfd_elf_generic_reloc, /* special_function */
649 "R_PPC64_UADDR16", /* name */
650 FALSE, /* partial_inplace */
652 0xffff, /* dst_mask */
653 FALSE), /* pcrel_offset */
655 /* 32-bit PC relative. */
656 HOWTO (R_PPC64_REL32, /* type */
658 2, /* size (0 = byte, 1 = short, 2 = long) */
660 TRUE, /* pc_relative */
662 complain_overflow_signed, /* complain_on_overflow */
663 bfd_elf_generic_reloc, /* special_function */
664 "R_PPC64_REL32", /* name */
665 FALSE, /* partial_inplace */
667 0xffffffff, /* dst_mask */
668 TRUE), /* pcrel_offset */
670 /* 32-bit relocation to the symbol's procedure linkage table. */
671 HOWTO (R_PPC64_PLT32, /* type */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
675 FALSE, /* pc_relative */
677 complain_overflow_bitfield, /* complain_on_overflow */
678 ppc64_elf_unhandled_reloc, /* special_function */
679 "R_PPC64_PLT32", /* name */
680 FALSE, /* partial_inplace */
682 0xffffffff, /* dst_mask */
683 FALSE), /* pcrel_offset */
685 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
686 FIXME: R_PPC64_PLTREL32 not supported. */
687 HOWTO (R_PPC64_PLTREL32, /* type */
689 2, /* size (0 = byte, 1 = short, 2 = long) */
691 TRUE, /* pc_relative */
693 complain_overflow_signed, /* complain_on_overflow */
694 ppc64_elf_unhandled_reloc, /* special_function */
695 "R_PPC64_PLTREL32", /* name */
696 FALSE, /* partial_inplace */
698 0xffffffff, /* dst_mask */
699 TRUE), /* pcrel_offset */
701 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
703 HOWTO (R_PPC64_PLT16_LO, /* type */
705 1, /* size (0 = byte, 1 = short, 2 = long) */
707 FALSE, /* pc_relative */
709 complain_overflow_dont, /* complain_on_overflow */
710 ppc64_elf_unhandled_reloc, /* special_function */
711 "R_PPC64_PLT16_LO", /* name */
712 FALSE, /* partial_inplace */
714 0xffff, /* dst_mask */
715 FALSE), /* pcrel_offset */
717 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
719 HOWTO (R_PPC64_PLT16_HI, /* type */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
723 FALSE, /* pc_relative */
725 complain_overflow_signed, /* complain_on_overflow */
726 ppc64_elf_unhandled_reloc, /* special_function */
727 "R_PPC64_PLT16_HI", /* name */
728 FALSE, /* partial_inplace */
730 0xffff, /* dst_mask */
731 FALSE), /* pcrel_offset */
733 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
735 HOWTO (R_PPC64_PLT16_HA, /* type */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
739 FALSE, /* pc_relative */
741 complain_overflow_signed, /* complain_on_overflow */
742 ppc64_elf_unhandled_reloc, /* special_function */
743 "R_PPC64_PLT16_HA", /* name */
744 FALSE, /* partial_inplace */
746 0xffff, /* dst_mask */
747 FALSE), /* pcrel_offset */
749 /* 16-bit section relative relocation. */
750 HOWTO (R_PPC64_SECTOFF, /* type */
752 1, /* size (0 = byte, 1 = short, 2 = long) */
754 FALSE, /* pc_relative */
756 complain_overflow_signed, /* complain_on_overflow */
757 ppc64_elf_sectoff_reloc, /* special_function */
758 "R_PPC64_SECTOFF", /* name */
759 FALSE, /* partial_inplace */
761 0xffff, /* dst_mask */
762 FALSE), /* pcrel_offset */
764 /* Like R_PPC64_SECTOFF, but no overflow warning. */
765 HOWTO (R_PPC64_SECTOFF_LO, /* type */
767 1, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE, /* pc_relative */
771 complain_overflow_dont, /* complain_on_overflow */
772 ppc64_elf_sectoff_reloc, /* special_function */
773 "R_PPC64_SECTOFF_LO", /* name */
774 FALSE, /* partial_inplace */
776 0xffff, /* dst_mask */
777 FALSE), /* pcrel_offset */
779 /* 16-bit upper half section relative relocation. */
780 HOWTO (R_PPC64_SECTOFF_HI, /* type */
782 1, /* size (0 = byte, 1 = short, 2 = long) */
784 FALSE, /* pc_relative */
786 complain_overflow_signed, /* complain_on_overflow */
787 ppc64_elf_sectoff_reloc, /* special_function */
788 "R_PPC64_SECTOFF_HI", /* name */
789 FALSE, /* partial_inplace */
791 0xffff, /* dst_mask */
792 FALSE), /* pcrel_offset */
794 /* 16-bit upper half adjusted section relative relocation. */
795 HOWTO (R_PPC64_SECTOFF_HA, /* type */
797 1, /* size (0 = byte, 1 = short, 2 = long) */
799 FALSE, /* pc_relative */
801 complain_overflow_signed, /* complain_on_overflow */
802 ppc64_elf_sectoff_ha_reloc, /* special_function */
803 "R_PPC64_SECTOFF_HA", /* name */
804 FALSE, /* partial_inplace */
806 0xffff, /* dst_mask */
807 FALSE), /* pcrel_offset */
809 /* Like R_PPC64_REL24 without touching the two least significant bits. */
810 HOWTO (R_PPC64_REL30, /* type */
812 2, /* size (0 = byte, 1 = short, 2 = long) */
814 TRUE, /* pc_relative */
816 complain_overflow_dont, /* complain_on_overflow */
817 bfd_elf_generic_reloc, /* special_function */
818 "R_PPC64_REL30", /* name */
819 FALSE, /* partial_inplace */
821 0xfffffffc, /* dst_mask */
822 TRUE), /* pcrel_offset */
824 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
826 /* A standard 64-bit relocation. */
827 HOWTO (R_PPC64_ADDR64, /* type */
829 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
831 FALSE, /* pc_relative */
833 complain_overflow_dont, /* complain_on_overflow */
834 bfd_elf_generic_reloc, /* special_function */
835 "R_PPC64_ADDR64", /* name */
836 FALSE, /* partial_inplace */
838 ONES (64), /* dst_mask */
839 FALSE), /* pcrel_offset */
841 /* The bits 32-47 of an address. */
842 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
844 1, /* size (0 = byte, 1 = short, 2 = long) */
846 FALSE, /* pc_relative */
848 complain_overflow_dont, /* complain_on_overflow */
849 bfd_elf_generic_reloc, /* special_function */
850 "R_PPC64_ADDR16_HIGHER", /* name */
851 FALSE, /* partial_inplace */
853 0xffff, /* dst_mask */
854 FALSE), /* pcrel_offset */
856 /* The bits 32-47 of an address, plus 1 if the contents of the low
857 16 bits, treated as a signed number, is negative. */
858 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
860 1, /* size (0 = byte, 1 = short, 2 = long) */
862 FALSE, /* pc_relative */
864 complain_overflow_dont, /* complain_on_overflow */
865 ppc64_elf_ha_reloc, /* special_function */
866 "R_PPC64_ADDR16_HIGHERA", /* name */
867 FALSE, /* partial_inplace */
869 0xffff, /* dst_mask */
870 FALSE), /* pcrel_offset */
872 /* The bits 48-63 of an address. */
873 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
875 1, /* size (0 = byte, 1 = short, 2 = long) */
877 FALSE, /* pc_relative */
879 complain_overflow_dont, /* complain_on_overflow */
880 bfd_elf_generic_reloc, /* special_function */
881 "R_PPC64_ADDR16_HIGHEST", /* name */
882 FALSE, /* partial_inplace */
884 0xffff, /* dst_mask */
885 FALSE), /* pcrel_offset */
887 /* The bits 48-63 of an address, plus 1 if the contents of the low
888 16 bits, treated as a signed number, is negative. */
889 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
891 1, /* size (0 = byte, 1 = short, 2 = long) */
893 FALSE, /* pc_relative */
895 complain_overflow_dont, /* complain_on_overflow */
896 ppc64_elf_ha_reloc, /* special_function */
897 "R_PPC64_ADDR16_HIGHESTA", /* name */
898 FALSE, /* partial_inplace */
900 0xffff, /* dst_mask */
901 FALSE), /* pcrel_offset */
903 /* Like ADDR64, but may be unaligned. */
904 HOWTO (R_PPC64_UADDR64, /* type */
906 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
908 FALSE, /* pc_relative */
910 complain_overflow_dont, /* complain_on_overflow */
911 bfd_elf_generic_reloc, /* special_function */
912 "R_PPC64_UADDR64", /* name */
913 FALSE, /* partial_inplace */
915 ONES (64), /* dst_mask */
916 FALSE), /* pcrel_offset */
918 /* 64-bit relative relocation. */
919 HOWTO (R_PPC64_REL64, /* type */
921 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
923 TRUE, /* pc_relative */
925 complain_overflow_dont, /* complain_on_overflow */
926 bfd_elf_generic_reloc, /* special_function */
927 "R_PPC64_REL64", /* name */
928 FALSE, /* partial_inplace */
930 ONES (64), /* dst_mask */
931 TRUE), /* pcrel_offset */
933 /* 64-bit relocation to the symbol's procedure linkage table. */
934 HOWTO (R_PPC64_PLT64, /* type */
936 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
938 FALSE, /* pc_relative */
940 complain_overflow_dont, /* complain_on_overflow */
941 ppc64_elf_unhandled_reloc, /* special_function */
942 "R_PPC64_PLT64", /* name */
943 FALSE, /* partial_inplace */
945 ONES (64), /* dst_mask */
946 FALSE), /* pcrel_offset */
948 /* 64-bit PC relative relocation to the symbol's procedure linkage
950 /* FIXME: R_PPC64_PLTREL64 not supported. */
951 HOWTO (R_PPC64_PLTREL64, /* type */
953 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
955 TRUE, /* pc_relative */
957 complain_overflow_dont, /* complain_on_overflow */
958 ppc64_elf_unhandled_reloc, /* special_function */
959 "R_PPC64_PLTREL64", /* name */
960 FALSE, /* partial_inplace */
962 ONES (64), /* dst_mask */
963 TRUE), /* pcrel_offset */
965 /* 16 bit TOC-relative relocation. */
967 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
968 HOWTO (R_PPC64_TOC16, /* type */
970 1, /* size (0 = byte, 1 = short, 2 = long) */
972 FALSE, /* pc_relative */
974 complain_overflow_signed, /* complain_on_overflow */
975 ppc64_elf_toc_reloc, /* special_function */
976 "R_PPC64_TOC16", /* name */
977 FALSE, /* partial_inplace */
979 0xffff, /* dst_mask */
980 FALSE), /* pcrel_offset */
982 /* 16 bit TOC-relative relocation without overflow. */
984 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
985 HOWTO (R_PPC64_TOC16_LO, /* type */
987 1, /* size (0 = byte, 1 = short, 2 = long) */
989 FALSE, /* pc_relative */
991 complain_overflow_dont, /* complain_on_overflow */
992 ppc64_elf_toc_reloc, /* special_function */
993 "R_PPC64_TOC16_LO", /* name */
994 FALSE, /* partial_inplace */
996 0xffff, /* dst_mask */
997 FALSE), /* pcrel_offset */
999 /* 16 bit TOC-relative relocation, high 16 bits. */
1001 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
1002 HOWTO (R_PPC64_TOC16_HI, /* type */
1003 16, /* rightshift */
1004 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 FALSE, /* pc_relative */
1008 complain_overflow_signed, /* complain_on_overflow */
1009 ppc64_elf_toc_reloc, /* special_function */
1010 "R_PPC64_TOC16_HI", /* name */
1011 FALSE, /* partial_inplace */
1013 0xffff, /* dst_mask */
1014 FALSE), /* pcrel_offset */
1016 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1017 contents of the low 16 bits, treated as a signed number, is
1020 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1021 HOWTO (R_PPC64_TOC16_HA, /* type */
1022 16, /* rightshift */
1023 1, /* size (0 = byte, 1 = short, 2 = long) */
1025 FALSE, /* pc_relative */
1027 complain_overflow_signed, /* complain_on_overflow */
1028 ppc64_elf_toc_ha_reloc, /* special_function */
1029 "R_PPC64_TOC16_HA", /* name */
1030 FALSE, /* partial_inplace */
1032 0xffff, /* dst_mask */
1033 FALSE), /* pcrel_offset */
1035 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1037 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1038 HOWTO (R_PPC64_TOC, /* type */
1040 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1042 FALSE, /* pc_relative */
1044 complain_overflow_dont, /* complain_on_overflow */
1045 ppc64_elf_toc64_reloc, /* special_function */
1046 "R_PPC64_TOC", /* name */
1047 FALSE, /* partial_inplace */
1049 ONES (64), /* dst_mask */
1050 FALSE), /* pcrel_offset */
1052 /* Like R_PPC64_GOT16, but also informs the link editor that the
1053 value to relocate may (!) refer to a PLT entry which the link
1054 editor (a) may replace with the symbol value. If the link editor
1055 is unable to fully resolve the symbol, it may (b) create a PLT
1056 entry and store the address to the new PLT entry in the GOT.
1057 This permits lazy resolution of function symbols at run time.
1058 The link editor may also skip all of this and just (c) emit a
1059 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1060 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1061 HOWTO (R_PPC64_PLTGOT16, /* type */
1063 1, /* size (0 = byte, 1 = short, 2 = long) */
1065 FALSE, /* pc_relative */
1067 complain_overflow_signed, /* complain_on_overflow */
1068 ppc64_elf_unhandled_reloc, /* special_function */
1069 "R_PPC64_PLTGOT16", /* name */
1070 FALSE, /* partial_inplace */
1072 0xffff, /* dst_mask */
1073 FALSE), /* pcrel_offset */
1075 /* Like R_PPC64_PLTGOT16, but without overflow. */
1076 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1077 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1079 1, /* size (0 = byte, 1 = short, 2 = long) */
1081 FALSE, /* pc_relative */
1083 complain_overflow_dont, /* complain_on_overflow */
1084 ppc64_elf_unhandled_reloc, /* special_function */
1085 "R_PPC64_PLTGOT16_LO", /* name */
1086 FALSE, /* partial_inplace */
1088 0xffff, /* dst_mask */
1089 FALSE), /* pcrel_offset */
1091 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1092 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1093 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1094 16, /* rightshift */
1095 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 FALSE, /* pc_relative */
1099 complain_overflow_signed, /* complain_on_overflow */
1100 ppc64_elf_unhandled_reloc, /* special_function */
1101 "R_PPC64_PLTGOT16_HI", /* name */
1102 FALSE, /* partial_inplace */
1104 0xffff, /* dst_mask */
1105 FALSE), /* pcrel_offset */
1107 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1108 1 if the contents of the low 16 bits, treated as a signed number,
1110 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1111 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1112 16, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE, /* pc_relative */
1117 complain_overflow_signed, /* complain_on_overflow */
1118 ppc64_elf_unhandled_reloc, /* special_function */
1119 "R_PPC64_PLTGOT16_HA", /* name */
1120 FALSE, /* partial_inplace */
1122 0xffff, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1125 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1126 HOWTO (R_PPC64_ADDR16_DS, /* type */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE, /* pc_relative */
1132 complain_overflow_signed, /* complain_on_overflow */
1133 bfd_elf_generic_reloc, /* special_function */
1134 "R_PPC64_ADDR16_DS", /* name */
1135 FALSE, /* partial_inplace */
1137 0xfffc, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1140 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1141 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 FALSE, /* pc_relative */
1147 complain_overflow_dont,/* complain_on_overflow */
1148 bfd_elf_generic_reloc, /* special_function */
1149 "R_PPC64_ADDR16_LO_DS",/* name */
1150 FALSE, /* partial_inplace */
1152 0xfffc, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1155 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1156 HOWTO (R_PPC64_GOT16_DS, /* type */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 FALSE, /* pc_relative */
1162 complain_overflow_signed, /* complain_on_overflow */
1163 ppc64_elf_unhandled_reloc, /* special_function */
1164 "R_PPC64_GOT16_DS", /* name */
1165 FALSE, /* partial_inplace */
1167 0xfffc, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1170 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1171 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 FALSE, /* pc_relative */
1177 complain_overflow_dont, /* complain_on_overflow */
1178 ppc64_elf_unhandled_reloc, /* special_function */
1179 "R_PPC64_GOT16_LO_DS", /* name */
1180 FALSE, /* partial_inplace */
1182 0xfffc, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1185 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1186 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 FALSE, /* pc_relative */
1192 complain_overflow_dont, /* complain_on_overflow */
1193 ppc64_elf_unhandled_reloc, /* special_function */
1194 "R_PPC64_PLT16_LO_DS", /* name */
1195 FALSE, /* partial_inplace */
1197 0xfffc, /* dst_mask */
1198 FALSE), /* pcrel_offset */
1200 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1201 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1203 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 FALSE, /* pc_relative */
1207 complain_overflow_signed, /* complain_on_overflow */
1208 ppc64_elf_sectoff_reloc, /* special_function */
1209 "R_PPC64_SECTOFF_DS", /* name */
1210 FALSE, /* partial_inplace */
1212 0xfffc, /* dst_mask */
1213 FALSE), /* pcrel_offset */
1215 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1216 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 FALSE, /* pc_relative */
1222 complain_overflow_dont, /* complain_on_overflow */
1223 ppc64_elf_sectoff_reloc, /* special_function */
1224 "R_PPC64_SECTOFF_LO_DS",/* name */
1225 FALSE, /* partial_inplace */
1227 0xfffc, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1230 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1231 HOWTO (R_PPC64_TOC16_DS, /* type */
1233 1, /* size (0 = byte, 1 = short, 2 = long) */
1235 FALSE, /* pc_relative */
1237 complain_overflow_signed, /* complain_on_overflow */
1238 ppc64_elf_toc_reloc, /* special_function */
1239 "R_PPC64_TOC16_DS", /* name */
1240 FALSE, /* partial_inplace */
1242 0xfffc, /* dst_mask */
1243 FALSE), /* pcrel_offset */
1245 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1246 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1248 1, /* size (0 = byte, 1 = short, 2 = long) */
1250 FALSE, /* pc_relative */
1252 complain_overflow_dont, /* complain_on_overflow */
1253 ppc64_elf_toc_reloc, /* special_function */
1254 "R_PPC64_TOC16_LO_DS", /* name */
1255 FALSE, /* partial_inplace */
1257 0xfffc, /* dst_mask */
1258 FALSE), /* pcrel_offset */
1260 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1261 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1262 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1264 1, /* size (0 = byte, 1 = short, 2 = long) */
1266 FALSE, /* pc_relative */
1268 complain_overflow_signed, /* complain_on_overflow */
1269 ppc64_elf_unhandled_reloc, /* special_function */
1270 "R_PPC64_PLTGOT16_DS", /* name */
1271 FALSE, /* partial_inplace */
1273 0xfffc, /* dst_mask */
1274 FALSE), /* pcrel_offset */
1276 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1277 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1278 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1280 1, /* size (0 = byte, 1 = short, 2 = long) */
1282 FALSE, /* pc_relative */
1284 complain_overflow_dont, /* complain_on_overflow */
1285 ppc64_elf_unhandled_reloc, /* special_function */
1286 "R_PPC64_PLTGOT16_LO_DS",/* name */
1287 FALSE, /* partial_inplace */
1289 0xfffc, /* dst_mask */
1290 FALSE), /* pcrel_offset */
1292 /* Marker relocs for TLS. */
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TLS", /* name */
1302 FALSE, /* partial_inplace */
1305 FALSE), /* pcrel_offset */
1307 HOWTO (R_PPC64_TLSGD,
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 FALSE, /* pc_relative */
1313 complain_overflow_dont, /* complain_on_overflow */
1314 bfd_elf_generic_reloc, /* special_function */
1315 "R_PPC64_TLSGD", /* name */
1316 FALSE, /* partial_inplace */
1319 FALSE), /* pcrel_offset */
1321 HOWTO (R_PPC64_TLSLD,
1323 2, /* size (0 = byte, 1 = short, 2 = long) */
1325 FALSE, /* pc_relative */
1327 complain_overflow_dont, /* complain_on_overflow */
1328 bfd_elf_generic_reloc, /* special_function */
1329 "R_PPC64_TLSLD", /* name */
1330 FALSE, /* partial_inplace */
1333 FALSE), /* pcrel_offset */
1335 HOWTO (R_PPC64_TOCSAVE,
1337 2, /* size (0 = byte, 1 = short, 2 = long) */
1339 FALSE, /* pc_relative */
1341 complain_overflow_dont, /* complain_on_overflow */
1342 bfd_elf_generic_reloc, /* special_function */
1343 "R_PPC64_TOCSAVE", /* name */
1344 FALSE, /* partial_inplace */
1347 FALSE), /* pcrel_offset */
1349 /* Computes the load module index of the load module that contains the
1350 definition of its TLS sym. */
1351 HOWTO (R_PPC64_DTPMOD64,
1353 4, /* size (0 = byte, 1 = short, 2 = long) */
1355 FALSE, /* pc_relative */
1357 complain_overflow_dont, /* complain_on_overflow */
1358 ppc64_elf_unhandled_reloc, /* special_function */
1359 "R_PPC64_DTPMOD64", /* name */
1360 FALSE, /* partial_inplace */
1362 ONES (64), /* dst_mask */
1363 FALSE), /* pcrel_offset */
1365 /* Computes a dtv-relative displacement, the difference between the value
1366 of sym+add and the base address of the thread-local storage block that
1367 contains the definition of sym, minus 0x8000. */
1368 HOWTO (R_PPC64_DTPREL64,
1370 4, /* size (0 = byte, 1 = short, 2 = long) */
1372 FALSE, /* pc_relative */
1374 complain_overflow_dont, /* complain_on_overflow */
1375 ppc64_elf_unhandled_reloc, /* special_function */
1376 "R_PPC64_DTPREL64", /* name */
1377 FALSE, /* partial_inplace */
1379 ONES (64), /* dst_mask */
1380 FALSE), /* pcrel_offset */
1382 /* A 16 bit dtprel reloc. */
1383 HOWTO (R_PPC64_DTPREL16,
1385 1, /* size (0 = byte, 1 = short, 2 = long) */
1387 FALSE, /* pc_relative */
1389 complain_overflow_signed, /* complain_on_overflow */
1390 ppc64_elf_unhandled_reloc, /* special_function */
1391 "R_PPC64_DTPREL16", /* name */
1392 FALSE, /* partial_inplace */
1394 0xffff, /* dst_mask */
1395 FALSE), /* pcrel_offset */
1397 /* Like DTPREL16, but no overflow. */
1398 HOWTO (R_PPC64_DTPREL16_LO,
1400 1, /* size (0 = byte, 1 = short, 2 = long) */
1402 FALSE, /* pc_relative */
1404 complain_overflow_dont, /* complain_on_overflow */
1405 ppc64_elf_unhandled_reloc, /* special_function */
1406 "R_PPC64_DTPREL16_LO", /* name */
1407 FALSE, /* partial_inplace */
1409 0xffff, /* dst_mask */
1410 FALSE), /* pcrel_offset */
1412 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1413 HOWTO (R_PPC64_DTPREL16_HI,
1414 16, /* rightshift */
1415 1, /* size (0 = byte, 1 = short, 2 = long) */
1417 FALSE, /* pc_relative */
1419 complain_overflow_signed, /* complain_on_overflow */
1420 ppc64_elf_unhandled_reloc, /* special_function */
1421 "R_PPC64_DTPREL16_HI", /* name */
1422 FALSE, /* partial_inplace */
1424 0xffff, /* dst_mask */
1425 FALSE), /* pcrel_offset */
1427 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1428 HOWTO (R_PPC64_DTPREL16_HA,
1429 16, /* rightshift */
1430 1, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE, /* pc_relative */
1434 complain_overflow_signed, /* complain_on_overflow */
1435 ppc64_elf_unhandled_reloc, /* special_function */
1436 "R_PPC64_DTPREL16_HA", /* name */
1437 FALSE, /* partial_inplace */
1439 0xffff, /* dst_mask */
1440 FALSE), /* pcrel_offset */
1442 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1443 HOWTO (R_PPC64_DTPREL16_HIGHER,
1444 32, /* rightshift */
1445 1, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE, /* pc_relative */
1449 complain_overflow_dont, /* complain_on_overflow */
1450 ppc64_elf_unhandled_reloc, /* special_function */
1451 "R_PPC64_DTPREL16_HIGHER", /* name */
1452 FALSE, /* partial_inplace */
1454 0xffff, /* dst_mask */
1455 FALSE), /* pcrel_offset */
1457 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1458 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1459 32, /* rightshift */
1460 1, /* size (0 = byte, 1 = short, 2 = long) */
1462 FALSE, /* pc_relative */
1464 complain_overflow_dont, /* complain_on_overflow */
1465 ppc64_elf_unhandled_reloc, /* special_function */
1466 "R_PPC64_DTPREL16_HIGHERA", /* name */
1467 FALSE, /* partial_inplace */
1469 0xffff, /* dst_mask */
1470 FALSE), /* pcrel_offset */
1472 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1473 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1474 48, /* rightshift */
1475 1, /* size (0 = byte, 1 = short, 2 = long) */
1477 FALSE, /* pc_relative */
1479 complain_overflow_dont, /* complain_on_overflow */
1480 ppc64_elf_unhandled_reloc, /* special_function */
1481 "R_PPC64_DTPREL16_HIGHEST", /* name */
1482 FALSE, /* partial_inplace */
1484 0xffff, /* dst_mask */
1485 FALSE), /* pcrel_offset */
1487 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1488 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1489 48, /* rightshift */
1490 1, /* size (0 = byte, 1 = short, 2 = long) */
1492 FALSE, /* pc_relative */
1494 complain_overflow_dont, /* complain_on_overflow */
1495 ppc64_elf_unhandled_reloc, /* special_function */
1496 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1497 FALSE, /* partial_inplace */
1499 0xffff, /* dst_mask */
1500 FALSE), /* pcrel_offset */
1502 /* Like DTPREL16, but for insns with a DS field. */
1503 HOWTO (R_PPC64_DTPREL16_DS,
1505 1, /* size (0 = byte, 1 = short, 2 = long) */
1507 FALSE, /* pc_relative */
1509 complain_overflow_signed, /* complain_on_overflow */
1510 ppc64_elf_unhandled_reloc, /* special_function */
1511 "R_PPC64_DTPREL16_DS", /* name */
1512 FALSE, /* partial_inplace */
1514 0xfffc, /* dst_mask */
1515 FALSE), /* pcrel_offset */
1517 /* Like DTPREL16_DS, but no overflow. */
1518 HOWTO (R_PPC64_DTPREL16_LO_DS,
1520 1, /* size (0 = byte, 1 = short, 2 = long) */
1522 FALSE, /* pc_relative */
1524 complain_overflow_dont, /* complain_on_overflow */
1525 ppc64_elf_unhandled_reloc, /* special_function */
1526 "R_PPC64_DTPREL16_LO_DS", /* name */
1527 FALSE, /* partial_inplace */
1529 0xfffc, /* dst_mask */
1530 FALSE), /* pcrel_offset */
1532 /* Computes a tp-relative displacement, the difference between the value of
1533 sym+add and the value of the thread pointer (r13). */
1534 HOWTO (R_PPC64_TPREL64,
1536 4, /* size (0 = byte, 1 = short, 2 = long) */
1538 FALSE, /* pc_relative */
1540 complain_overflow_dont, /* complain_on_overflow */
1541 ppc64_elf_unhandled_reloc, /* special_function */
1542 "R_PPC64_TPREL64", /* name */
1543 FALSE, /* partial_inplace */
1545 ONES (64), /* dst_mask */
1546 FALSE), /* pcrel_offset */
1548 /* A 16 bit tprel reloc. */
1549 HOWTO (R_PPC64_TPREL16,
1551 1, /* size (0 = byte, 1 = short, 2 = long) */
1553 FALSE, /* pc_relative */
1555 complain_overflow_signed, /* complain_on_overflow */
1556 ppc64_elf_unhandled_reloc, /* special_function */
1557 "R_PPC64_TPREL16", /* name */
1558 FALSE, /* partial_inplace */
1560 0xffff, /* dst_mask */
1561 FALSE), /* pcrel_offset */
1563 /* Like TPREL16, but no overflow. */
1564 HOWTO (R_PPC64_TPREL16_LO,
1566 1, /* size (0 = byte, 1 = short, 2 = long) */
1568 FALSE, /* pc_relative */
1570 complain_overflow_dont, /* complain_on_overflow */
1571 ppc64_elf_unhandled_reloc, /* special_function */
1572 "R_PPC64_TPREL16_LO", /* name */
1573 FALSE, /* partial_inplace */
1575 0xffff, /* dst_mask */
1576 FALSE), /* pcrel_offset */
1578 /* Like TPREL16_LO, but next higher group of 16 bits. */
1579 HOWTO (R_PPC64_TPREL16_HI,
1580 16, /* rightshift */
1581 1, /* size (0 = byte, 1 = short, 2 = long) */
1583 FALSE, /* pc_relative */
1585 complain_overflow_signed, /* complain_on_overflow */
1586 ppc64_elf_unhandled_reloc, /* special_function */
1587 "R_PPC64_TPREL16_HI", /* name */
1588 FALSE, /* partial_inplace */
1590 0xffff, /* dst_mask */
1591 FALSE), /* pcrel_offset */
1593 /* Like TPREL16_HI, but adjust for low 16 bits. */
1594 HOWTO (R_PPC64_TPREL16_HA,
1595 16, /* rightshift */
1596 1, /* size (0 = byte, 1 = short, 2 = long) */
1598 FALSE, /* pc_relative */
1600 complain_overflow_signed, /* complain_on_overflow */
1601 ppc64_elf_unhandled_reloc, /* special_function */
1602 "R_PPC64_TPREL16_HA", /* name */
1603 FALSE, /* partial_inplace */
1605 0xffff, /* dst_mask */
1606 FALSE), /* pcrel_offset */
1608 /* Like TPREL16_HI, but next higher group of 16 bits. */
1609 HOWTO (R_PPC64_TPREL16_HIGHER,
1610 32, /* rightshift */
1611 1, /* size (0 = byte, 1 = short, 2 = long) */
1613 FALSE, /* pc_relative */
1615 complain_overflow_dont, /* complain_on_overflow */
1616 ppc64_elf_unhandled_reloc, /* special_function */
1617 "R_PPC64_TPREL16_HIGHER", /* name */
1618 FALSE, /* partial_inplace */
1620 0xffff, /* dst_mask */
1621 FALSE), /* pcrel_offset */
1623 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1624 HOWTO (R_PPC64_TPREL16_HIGHERA,
1625 32, /* rightshift */
1626 1, /* size (0 = byte, 1 = short, 2 = long) */
1628 FALSE, /* pc_relative */
1630 complain_overflow_dont, /* complain_on_overflow */
1631 ppc64_elf_unhandled_reloc, /* special_function */
1632 "R_PPC64_TPREL16_HIGHERA", /* name */
1633 FALSE, /* partial_inplace */
1635 0xffff, /* dst_mask */
1636 FALSE), /* pcrel_offset */
1638 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1639 HOWTO (R_PPC64_TPREL16_HIGHEST,
1640 48, /* rightshift */
1641 1, /* size (0 = byte, 1 = short, 2 = long) */
1643 FALSE, /* pc_relative */
1645 complain_overflow_dont, /* complain_on_overflow */
1646 ppc64_elf_unhandled_reloc, /* special_function */
1647 "R_PPC64_TPREL16_HIGHEST", /* name */
1648 FALSE, /* partial_inplace */
1650 0xffff, /* dst_mask */
1651 FALSE), /* pcrel_offset */
1653 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1654 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1655 48, /* rightshift */
1656 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 FALSE, /* pc_relative */
1660 complain_overflow_dont, /* complain_on_overflow */
1661 ppc64_elf_unhandled_reloc, /* special_function */
1662 "R_PPC64_TPREL16_HIGHESTA", /* name */
1663 FALSE, /* partial_inplace */
1665 0xffff, /* dst_mask */
1666 FALSE), /* pcrel_offset */
1668 /* Like TPREL16, but for insns with a DS field. */
1669 HOWTO (R_PPC64_TPREL16_DS,
1671 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 FALSE, /* pc_relative */
1675 complain_overflow_signed, /* complain_on_overflow */
1676 ppc64_elf_unhandled_reloc, /* special_function */
1677 "R_PPC64_TPREL16_DS", /* name */
1678 FALSE, /* partial_inplace */
1680 0xfffc, /* dst_mask */
1681 FALSE), /* pcrel_offset */
1683 /* Like TPREL16_DS, but no overflow. */
1684 HOWTO (R_PPC64_TPREL16_LO_DS,
1686 1, /* size (0 = byte, 1 = short, 2 = long) */
1688 FALSE, /* pc_relative */
1690 complain_overflow_dont, /* complain_on_overflow */
1691 ppc64_elf_unhandled_reloc, /* special_function */
1692 "R_PPC64_TPREL16_LO_DS", /* name */
1693 FALSE, /* partial_inplace */
1695 0xfffc, /* dst_mask */
1696 FALSE), /* pcrel_offset */
1698 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1699 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1700 to the first entry relative to the TOC base (r2). */
1701 HOWTO (R_PPC64_GOT_TLSGD16,
1703 1, /* size (0 = byte, 1 = short, 2 = long) */
1705 FALSE, /* pc_relative */
1707 complain_overflow_signed, /* complain_on_overflow */
1708 ppc64_elf_unhandled_reloc, /* special_function */
1709 "R_PPC64_GOT_TLSGD16", /* name */
1710 FALSE, /* partial_inplace */
1712 0xffff, /* dst_mask */
1713 FALSE), /* pcrel_offset */
1715 /* Like GOT_TLSGD16, but no overflow. */
1716 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1718 1, /* size (0 = byte, 1 = short, 2 = long) */
1720 FALSE, /* pc_relative */
1722 complain_overflow_dont, /* complain_on_overflow */
1723 ppc64_elf_unhandled_reloc, /* special_function */
1724 "R_PPC64_GOT_TLSGD16_LO", /* name */
1725 FALSE, /* partial_inplace */
1727 0xffff, /* dst_mask */
1728 FALSE), /* pcrel_offset */
1730 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1731 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1732 16, /* rightshift */
1733 1, /* size (0 = byte, 1 = short, 2 = long) */
1735 FALSE, /* pc_relative */
1737 complain_overflow_signed, /* complain_on_overflow */
1738 ppc64_elf_unhandled_reloc, /* special_function */
1739 "R_PPC64_GOT_TLSGD16_HI", /* name */
1740 FALSE, /* partial_inplace */
1742 0xffff, /* dst_mask */
1743 FALSE), /* pcrel_offset */
1745 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1746 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1747 16, /* rightshift */
1748 1, /* size (0 = byte, 1 = short, 2 = long) */
1750 FALSE, /* pc_relative */
1752 complain_overflow_signed, /* complain_on_overflow */
1753 ppc64_elf_unhandled_reloc, /* special_function */
1754 "R_PPC64_GOT_TLSGD16_HA", /* name */
1755 FALSE, /* partial_inplace */
1757 0xffff, /* dst_mask */
1758 FALSE), /* pcrel_offset */
1760 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1761 with values (sym+add)@dtpmod and zero, and computes the offset to the
1762 first entry relative to the TOC base (r2). */
1763 HOWTO (R_PPC64_GOT_TLSLD16,
1765 1, /* size (0 = byte, 1 = short, 2 = long) */
1767 FALSE, /* pc_relative */
1769 complain_overflow_signed, /* complain_on_overflow */
1770 ppc64_elf_unhandled_reloc, /* special_function */
1771 "R_PPC64_GOT_TLSLD16", /* name */
1772 FALSE, /* partial_inplace */
1774 0xffff, /* dst_mask */
1775 FALSE), /* pcrel_offset */
1777 /* Like GOT_TLSLD16, but no overflow. */
1778 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1780 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 FALSE, /* pc_relative */
1784 complain_overflow_dont, /* complain_on_overflow */
1785 ppc64_elf_unhandled_reloc, /* special_function */
1786 "R_PPC64_GOT_TLSLD16_LO", /* name */
1787 FALSE, /* partial_inplace */
1789 0xffff, /* dst_mask */
1790 FALSE), /* pcrel_offset */
1792 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1793 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1794 16, /* rightshift */
1795 1, /* size (0 = byte, 1 = short, 2 = long) */
1797 FALSE, /* pc_relative */
1799 complain_overflow_signed, /* complain_on_overflow */
1800 ppc64_elf_unhandled_reloc, /* special_function */
1801 "R_PPC64_GOT_TLSLD16_HI", /* name */
1802 FALSE, /* partial_inplace */
1804 0xffff, /* dst_mask */
1805 FALSE), /* pcrel_offset */
1807 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1808 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1809 16, /* rightshift */
1810 1, /* size (0 = byte, 1 = short, 2 = long) */
1812 FALSE, /* pc_relative */
1814 complain_overflow_signed, /* complain_on_overflow */
1815 ppc64_elf_unhandled_reloc, /* special_function */
1816 "R_PPC64_GOT_TLSLD16_HA", /* name */
1817 FALSE, /* partial_inplace */
1819 0xffff, /* dst_mask */
1820 FALSE), /* pcrel_offset */
1822 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1823 the offset to the entry relative to the TOC base (r2). */
1824 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1826 1, /* size (0 = byte, 1 = short, 2 = long) */
1828 FALSE, /* pc_relative */
1830 complain_overflow_signed, /* complain_on_overflow */
1831 ppc64_elf_unhandled_reloc, /* special_function */
1832 "R_PPC64_GOT_DTPREL16_DS", /* name */
1833 FALSE, /* partial_inplace */
1835 0xfffc, /* dst_mask */
1836 FALSE), /* pcrel_offset */
1838 /* Like GOT_DTPREL16_DS, but no overflow. */
1839 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1841 1, /* size (0 = byte, 1 = short, 2 = long) */
1843 FALSE, /* pc_relative */
1845 complain_overflow_dont, /* complain_on_overflow */
1846 ppc64_elf_unhandled_reloc, /* special_function */
1847 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1848 FALSE, /* partial_inplace */
1850 0xfffc, /* dst_mask */
1851 FALSE), /* pcrel_offset */
1853 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1854 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1855 16, /* rightshift */
1856 1, /* size (0 = byte, 1 = short, 2 = long) */
1858 FALSE, /* pc_relative */
1860 complain_overflow_signed, /* complain_on_overflow */
1861 ppc64_elf_unhandled_reloc, /* special_function */
1862 "R_PPC64_GOT_DTPREL16_HI", /* name */
1863 FALSE, /* partial_inplace */
1865 0xffff, /* dst_mask */
1866 FALSE), /* pcrel_offset */
1868 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1869 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1870 16, /* rightshift */
1871 1, /* size (0 = byte, 1 = short, 2 = long) */
1873 FALSE, /* pc_relative */
1875 complain_overflow_signed, /* complain_on_overflow */
1876 ppc64_elf_unhandled_reloc, /* special_function */
1877 "R_PPC64_GOT_DTPREL16_HA", /* name */
1878 FALSE, /* partial_inplace */
1880 0xffff, /* dst_mask */
1881 FALSE), /* pcrel_offset */
1883 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1884 offset to the entry relative to the TOC base (r2). */
1885 HOWTO (R_PPC64_GOT_TPREL16_DS,
1887 1, /* size (0 = byte, 1 = short, 2 = long) */
1889 FALSE, /* pc_relative */
1891 complain_overflow_signed, /* complain_on_overflow */
1892 ppc64_elf_unhandled_reloc, /* special_function */
1893 "R_PPC64_GOT_TPREL16_DS", /* name */
1894 FALSE, /* partial_inplace */
1896 0xfffc, /* dst_mask */
1897 FALSE), /* pcrel_offset */
1899 /* Like GOT_TPREL16_DS, but no overflow. */
1900 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1902 1, /* size (0 = byte, 1 = short, 2 = long) */
1904 FALSE, /* pc_relative */
1906 complain_overflow_dont, /* complain_on_overflow */
1907 ppc64_elf_unhandled_reloc, /* special_function */
1908 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1909 FALSE, /* partial_inplace */
1911 0xfffc, /* dst_mask */
1912 FALSE), /* pcrel_offset */
1914 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1915 HOWTO (R_PPC64_GOT_TPREL16_HI,
1916 16, /* rightshift */
1917 1, /* size (0 = byte, 1 = short, 2 = long) */
1919 FALSE, /* pc_relative */
1921 complain_overflow_signed, /* complain_on_overflow */
1922 ppc64_elf_unhandled_reloc, /* special_function */
1923 "R_PPC64_GOT_TPREL16_HI", /* name */
1924 FALSE, /* partial_inplace */
1926 0xffff, /* dst_mask */
1927 FALSE), /* pcrel_offset */
1929 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1930 HOWTO (R_PPC64_GOT_TPREL16_HA,
1931 16, /* rightshift */
1932 1, /* size (0 = byte, 1 = short, 2 = long) */
1934 FALSE, /* pc_relative */
1936 complain_overflow_signed, /* complain_on_overflow */
1937 ppc64_elf_unhandled_reloc, /* special_function */
1938 "R_PPC64_GOT_TPREL16_HA", /* name */
1939 FALSE, /* partial_inplace */
1941 0xffff, /* dst_mask */
1942 FALSE), /* pcrel_offset */
1944 HOWTO (R_PPC64_JMP_IREL, /* type */
1946 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1948 FALSE, /* pc_relative */
1950 complain_overflow_dont, /* complain_on_overflow */
1951 ppc64_elf_unhandled_reloc, /* special_function */
1952 "R_PPC64_JMP_IREL", /* name */
1953 FALSE, /* partial_inplace */
1956 FALSE), /* pcrel_offset */
1958 HOWTO (R_PPC64_IRELATIVE, /* type */
1960 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1962 FALSE, /* pc_relative */
1964 complain_overflow_dont, /* complain_on_overflow */
1965 bfd_elf_generic_reloc, /* special_function */
1966 "R_PPC64_IRELATIVE", /* name */
1967 FALSE, /* partial_inplace */
1969 ONES (64), /* dst_mask */
1970 FALSE), /* pcrel_offset */
1972 /* A 16 bit relative relocation. */
1973 HOWTO (R_PPC64_REL16, /* type */
1975 1, /* size (0 = byte, 1 = short, 2 = long) */
1977 TRUE, /* pc_relative */
1979 complain_overflow_signed, /* complain_on_overflow */
1980 bfd_elf_generic_reloc, /* special_function */
1981 "R_PPC64_REL16", /* name */
1982 FALSE, /* partial_inplace */
1984 0xffff, /* dst_mask */
1985 TRUE), /* pcrel_offset */
1987 /* A 16 bit relative relocation without overflow. */
1988 HOWTO (R_PPC64_REL16_LO, /* type */
1990 1, /* size (0 = byte, 1 = short, 2 = long) */
1992 TRUE, /* pc_relative */
1994 complain_overflow_dont,/* complain_on_overflow */
1995 bfd_elf_generic_reloc, /* special_function */
1996 "R_PPC64_REL16_LO", /* name */
1997 FALSE, /* partial_inplace */
1999 0xffff, /* dst_mask */
2000 TRUE), /* pcrel_offset */
2002 /* The high order 16 bits of a relative address. */
2003 HOWTO (R_PPC64_REL16_HI, /* type */
2004 16, /* rightshift */
2005 1, /* size (0 = byte, 1 = short, 2 = long) */
2007 TRUE, /* pc_relative */
2009 complain_overflow_signed, /* complain_on_overflow */
2010 bfd_elf_generic_reloc, /* special_function */
2011 "R_PPC64_REL16_HI", /* name */
2012 FALSE, /* partial_inplace */
2014 0xffff, /* dst_mask */
2015 TRUE), /* pcrel_offset */
2017 /* The high order 16 bits of a relative address, plus 1 if the contents of
2018 the low 16 bits, treated as a signed number, is negative. */
2019 HOWTO (R_PPC64_REL16_HA, /* type */
2020 16, /* rightshift */
2021 1, /* size (0 = byte, 1 = short, 2 = long) */
2023 TRUE, /* pc_relative */
2025 complain_overflow_signed, /* complain_on_overflow */
2026 ppc64_elf_ha_reloc, /* special_function */
2027 "R_PPC64_REL16_HA", /* name */
2028 FALSE, /* partial_inplace */
2030 0xffff, /* dst_mask */
2031 TRUE), /* pcrel_offset */
2033 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2034 HOWTO (R_PPC64_REL16DX_HA, /* type */
2035 16, /* rightshift */
2036 2, /* size (0 = byte, 1 = short, 2 = long) */
2038 TRUE, /* pc_relative */
2040 complain_overflow_signed, /* complain_on_overflow */
2041 ppc64_elf_ha_reloc, /* special_function */
2042 "R_PPC64_REL16DX_HA", /* name */
2043 FALSE, /* partial_inplace */
2045 0x1fffc1, /* dst_mask */
2046 TRUE), /* pcrel_offset */
2048 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2049 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2050 16, /* rightshift */
2051 1, /* size (0 = byte, 1 = short, 2 = long) */
2053 FALSE, /* pc_relative */
2055 complain_overflow_dont, /* complain_on_overflow */
2056 bfd_elf_generic_reloc, /* special_function */
2057 "R_PPC64_ADDR16_HIGH", /* name */
2058 FALSE, /* partial_inplace */
2060 0xffff, /* dst_mask */
2061 FALSE), /* pcrel_offset */
2063 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2064 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2065 16, /* rightshift */
2066 1, /* size (0 = byte, 1 = short, 2 = long) */
2068 FALSE, /* pc_relative */
2070 complain_overflow_dont, /* complain_on_overflow */
2071 ppc64_elf_ha_reloc, /* special_function */
2072 "R_PPC64_ADDR16_HIGHA", /* name */
2073 FALSE, /* partial_inplace */
2075 0xffff, /* dst_mask */
2076 FALSE), /* pcrel_offset */
2078 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2079 HOWTO (R_PPC64_DTPREL16_HIGH,
2080 16, /* rightshift */
2081 1, /* size (0 = byte, 1 = short, 2 = long) */
2083 FALSE, /* pc_relative */
2085 complain_overflow_dont, /* complain_on_overflow */
2086 ppc64_elf_unhandled_reloc, /* special_function */
2087 "R_PPC64_DTPREL16_HIGH", /* name */
2088 FALSE, /* partial_inplace */
2090 0xffff, /* dst_mask */
2091 FALSE), /* pcrel_offset */
2093 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2094 HOWTO (R_PPC64_DTPREL16_HIGHA,
2095 16, /* rightshift */
2096 1, /* size (0 = byte, 1 = short, 2 = long) */
2098 FALSE, /* pc_relative */
2100 complain_overflow_dont, /* complain_on_overflow */
2101 ppc64_elf_unhandled_reloc, /* special_function */
2102 "R_PPC64_DTPREL16_HIGHA", /* name */
2103 FALSE, /* partial_inplace */
2105 0xffff, /* dst_mask */
2106 FALSE), /* pcrel_offset */
2108 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2109 HOWTO (R_PPC64_TPREL16_HIGH,
2110 16, /* rightshift */
2111 1, /* size (0 = byte, 1 = short, 2 = long) */
2113 FALSE, /* pc_relative */
2115 complain_overflow_dont, /* complain_on_overflow */
2116 ppc64_elf_unhandled_reloc, /* special_function */
2117 "R_PPC64_TPREL16_HIGH", /* name */
2118 FALSE, /* partial_inplace */
2120 0xffff, /* dst_mask */
2121 FALSE), /* pcrel_offset */
2123 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2124 HOWTO (R_PPC64_TPREL16_HIGHA,
2125 16, /* rightshift */
2126 1, /* size (0 = byte, 1 = short, 2 = long) */
2128 FALSE, /* pc_relative */
2130 complain_overflow_dont, /* complain_on_overflow */
2131 ppc64_elf_unhandled_reloc, /* special_function */
2132 "R_PPC64_TPREL16_HIGHA", /* name */
2133 FALSE, /* partial_inplace */
2135 0xffff, /* dst_mask */
2136 FALSE), /* pcrel_offset */
2138 /* Marker reloc on ELFv2 large-model function entry. */
2139 HOWTO (R_PPC64_ENTRY,
2141 2, /* size (0 = byte, 1 = short, 2 = long) */
2143 FALSE, /* pc_relative */
2145 complain_overflow_dont, /* complain_on_overflow */
2146 bfd_elf_generic_reloc, /* special_function */
2147 "R_PPC64_ENTRY", /* name */
2148 FALSE, /* partial_inplace */
2151 FALSE), /* pcrel_offset */
2153 /* Like ADDR64, but use local entry point of function. */
2154 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2156 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2158 FALSE, /* pc_relative */
2160 complain_overflow_dont, /* complain_on_overflow */
2161 bfd_elf_generic_reloc, /* special_function */
2162 "R_PPC64_ADDR64_LOCAL", /* name */
2163 FALSE, /* partial_inplace */
2165 ONES (64), /* dst_mask */
2166 FALSE), /* pcrel_offset */
2168 /* GNU extension to record C++ vtable hierarchy. */
2169 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2171 0, /* size (0 = byte, 1 = short, 2 = long) */
2173 FALSE, /* pc_relative */
2175 complain_overflow_dont, /* complain_on_overflow */
2176 NULL, /* special_function */
2177 "R_PPC64_GNU_VTINHERIT", /* name */
2178 FALSE, /* partial_inplace */
2181 FALSE), /* pcrel_offset */
2183 /* GNU extension to record C++ vtable member usage. */
2184 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2186 0, /* size (0 = byte, 1 = short, 2 = long) */
2188 FALSE, /* pc_relative */
2190 complain_overflow_dont, /* complain_on_overflow */
2191 NULL, /* special_function */
2192 "R_PPC64_GNU_VTENTRY", /* name */
2193 FALSE, /* partial_inplace */
2196 FALSE), /* pcrel_offset */
2200 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2204 ppc_howto_init (void)
2206 unsigned int i, type;
2208 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2210 type = ppc64_elf_howto_raw[i].type;
2211 BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
2212 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2216 static reloc_howto_type *
2217 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2218 bfd_reloc_code_real_type code)
2220 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2222 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2223 /* Initialize howto table if needed. */
2231 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2233 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2235 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2237 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2239 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2241 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2243 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2245 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2247 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2249 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2251 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2253 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2255 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2257 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2259 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2261 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2263 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2265 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2267 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2269 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2271 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2273 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2275 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2277 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2279 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2281 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2283 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2285 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2287 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2289 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2291 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2293 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2295 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2297 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2299 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2301 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2303 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2305 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2307 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2309 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2311 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2313 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2315 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2317 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2319 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2321 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2323 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2325 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2327 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2329 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2331 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2333 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2335 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2337 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2339 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2341 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2343 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2345 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2347 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2349 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2351 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2353 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2355 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2357 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2359 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2361 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2363 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2365 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2367 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2369 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2371 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2373 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2375 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2377 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2379 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2381 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2383 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2385 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2387 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2389 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2391 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2393 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2395 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2397 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2399 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2401 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2403 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2405 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2407 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2409 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2411 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2413 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2415 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2417 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2419 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2421 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2423 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2425 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2427 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2429 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2431 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2433 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2435 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2437 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2439 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2441 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2443 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2445 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2447 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2449 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2451 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2453 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
2455 case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY;
2457 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2459 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2461 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2465 return ppc64_elf_howto_table[r];
2468 static reloc_howto_type *
2469 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2474 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
2475 if (ppc64_elf_howto_raw[i].name != NULL
2476 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2477 return &ppc64_elf_howto_raw[i];
2482 /* Set the howto pointer for a PowerPC ELF reloc. */
2485 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2486 Elf_Internal_Rela *dst)
2490 /* Initialize howto table if needed. */
2491 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2494 type = ELF64_R_TYPE (dst->r_info);
2495 if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
2497 /* xgettext:c-format */
2498 _bfd_error_handler (_("%B: invalid relocation type %d"),
2500 type = R_PPC64_NONE;
2502 cache_ptr->howto = ppc64_elf_howto_table[type];
2505 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2507 static bfd_reloc_status_type
2508 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2509 void *data, asection *input_section,
2510 bfd *output_bfd, char **error_message)
2512 enum elf_ppc64_reloc_type r_type;
2514 bfd_size_type octets;
2517 /* If this is a relocatable link (output_bfd test tells us), just
2518 call the generic function. Any adjustment will be done at final
2520 if (output_bfd != NULL)
2521 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2522 input_section, output_bfd, error_message);
2524 /* Adjust the addend for sign extension of the low 16 bits.
2525 We won't actually be using the low 16 bits, so trashing them
2527 reloc_entry->addend += 0x8000;
2528 r_type = reloc_entry->howto->type;
2529 if (r_type != R_PPC64_REL16DX_HA)
2530 return bfd_reloc_continue;
2533 if (!bfd_is_com_section (symbol->section))
2534 value = symbol->value;
2535 value += (reloc_entry->addend
2536 + symbol->section->output_offset
2537 + symbol->section->output_section->vma);
2538 value -= (reloc_entry->address
2539 + input_section->output_offset
2540 + input_section->output_section->vma);
2541 value = (bfd_signed_vma) value >> 16;
2543 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2544 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2546 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2547 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2548 if (value + 0x8000 > 0xffff)
2549 return bfd_reloc_overflow;
2550 return bfd_reloc_ok;
2553 static bfd_reloc_status_type
2554 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2555 void *data, asection *input_section,
2556 bfd *output_bfd, char **error_message)
2558 if (output_bfd != NULL)
2559 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2560 input_section, output_bfd, error_message);
2562 if (strcmp (symbol->section->name, ".opd") == 0
2563 && (symbol->section->owner->flags & DYNAMIC) == 0)
2565 bfd_vma dest = opd_entry_value (symbol->section,
2566 symbol->value + reloc_entry->addend,
2568 if (dest != (bfd_vma) -1)
2569 reloc_entry->addend = dest - (symbol->value
2570 + symbol->section->output_section->vma
2571 + symbol->section->output_offset);
2575 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2577 if (symbol->section->owner != abfd
2578 && symbol->section->owner != NULL
2579 && abiversion (symbol->section->owner) >= 2)
2583 for (i = 0; i < symbol->section->owner->symcount; ++i)
2585 asymbol *symdef = symbol->section->owner->outsymbols[i];
2587 if (strcmp (symdef->name, symbol->name) == 0)
2589 elfsym = (elf_symbol_type *) symdef;
2595 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2597 return bfd_reloc_continue;
2600 static bfd_reloc_status_type
2601 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2602 void *data, asection *input_section,
2603 bfd *output_bfd, char **error_message)
2606 enum elf_ppc64_reloc_type r_type;
2607 bfd_size_type octets;
2608 /* Assume 'at' branch hints. */
2609 bfd_boolean is_isa_v2 = TRUE;
2611 /* If this is a relocatable link (output_bfd test tells us), just
2612 call the generic function. Any adjustment will be done at final
2614 if (output_bfd != NULL)
2615 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2616 input_section, output_bfd, error_message);
2618 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2619 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2620 insn &= ~(0x01 << 21);
2621 r_type = reloc_entry->howto->type;
2622 if (r_type == R_PPC64_ADDR14_BRTAKEN
2623 || r_type == R_PPC64_REL14_BRTAKEN)
2624 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2628 /* Set 'a' bit. This is 0b00010 in BO field for branch
2629 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2630 for branch on CTR insns (BO == 1a00t or 1a01t). */
2631 if ((insn & (0x14 << 21)) == (0x04 << 21))
2633 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2643 if (!bfd_is_com_section (symbol->section))
2644 target = symbol->value;
2645 target += symbol->section->output_section->vma;
2646 target += symbol->section->output_offset;
2647 target += reloc_entry->addend;
2649 from = (reloc_entry->address
2650 + input_section->output_offset
2651 + input_section->output_section->vma);
2653 /* Invert 'y' bit if not the default. */
2654 if ((bfd_signed_vma) (target - from) < 0)
2657 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2659 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2660 input_section, output_bfd, error_message);
2663 static bfd_reloc_status_type
2664 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2665 void *data, asection *input_section,
2666 bfd *output_bfd, char **error_message)
2668 /* If this is a relocatable link (output_bfd test tells us), just
2669 call the generic function. Any adjustment will be done at final
2671 if (output_bfd != NULL)
2672 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2673 input_section, output_bfd, error_message);
2675 /* Subtract the symbol section base address. */
2676 reloc_entry->addend -= symbol->section->output_section->vma;
2677 return bfd_reloc_continue;
2680 static bfd_reloc_status_type
2681 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2682 void *data, asection *input_section,
2683 bfd *output_bfd, char **error_message)
2685 /* If this is a relocatable link (output_bfd test tells us), just
2686 call the generic function. Any adjustment will be done at final
2688 if (output_bfd != NULL)
2689 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2690 input_section, output_bfd, error_message);
2692 /* Subtract the symbol section base address. */
2693 reloc_entry->addend -= symbol->section->output_section->vma;
2695 /* Adjust the addend for sign extension of the low 16 bits. */
2696 reloc_entry->addend += 0x8000;
2697 return bfd_reloc_continue;
2700 static bfd_reloc_status_type
2701 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2702 void *data, asection *input_section,
2703 bfd *output_bfd, char **error_message)
2707 /* If this is a relocatable link (output_bfd test tells us), just
2708 call the generic function. Any adjustment will be done at final
2710 if (output_bfd != NULL)
2711 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2712 input_section, output_bfd, error_message);
2714 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2716 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2718 /* Subtract the TOC base address. */
2719 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2720 return bfd_reloc_continue;
2723 static bfd_reloc_status_type
2724 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2725 void *data, asection *input_section,
2726 bfd *output_bfd, char **error_message)
2730 /* If this is a relocatable link (output_bfd test tells us), just
2731 call the generic function. Any adjustment will be done at final
2733 if (output_bfd != NULL)
2734 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2735 input_section, output_bfd, error_message);
2737 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2739 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2741 /* Subtract the TOC base address. */
2742 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2744 /* Adjust the addend for sign extension of the low 16 bits. */
2745 reloc_entry->addend += 0x8000;
2746 return bfd_reloc_continue;
2749 static bfd_reloc_status_type
2750 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2751 void *data, asection *input_section,
2752 bfd *output_bfd, char **error_message)
2755 bfd_size_type octets;
2757 /* If this is a relocatable link (output_bfd test tells us), just
2758 call the generic function. Any adjustment will be done at final
2760 if (output_bfd != NULL)
2761 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2762 input_section, output_bfd, error_message);
2764 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2766 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2768 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2769 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2770 return bfd_reloc_ok;
2773 static bfd_reloc_status_type
2774 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2775 void *data, asection *input_section,
2776 bfd *output_bfd, char **error_message)
2778 /* If this is a relocatable link (output_bfd test tells us), just
2779 call the generic function. Any adjustment will be done at final
2781 if (output_bfd != NULL)
2782 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2783 input_section, output_bfd, error_message);
2785 if (error_message != NULL)
2787 static char buf[60];
2788 sprintf (buf, "generic linker can't handle %s",
2789 reloc_entry->howto->name);
2790 *error_message = buf;
2792 return bfd_reloc_dangerous;
2795 /* Track GOT entries needed for a given symbol. We might need more
2796 than one got entry per symbol. */
2799 struct got_entry *next;
2801 /* The symbol addend that we'll be placing in the GOT. */
2804 /* Unlike other ELF targets, we use separate GOT entries for the same
2805 symbol referenced from different input files. This is to support
2806 automatic multiple TOC/GOT sections, where the TOC base can vary
2807 from one input file to another. After partitioning into TOC groups
2808 we merge entries within the group.
2810 Point to the BFD owning this GOT entry. */
2813 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2814 TLS_TPREL or TLS_DTPREL for tls entries. */
2815 unsigned char tls_type;
2817 /* Non-zero if got.ent points to real entry. */
2818 unsigned char is_indirect;
2820 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2823 bfd_signed_vma refcount;
2825 struct got_entry *ent;
2829 /* The same for PLT. */
2832 struct plt_entry *next;
2838 bfd_signed_vma refcount;
2843 struct ppc64_elf_obj_tdata
2845 struct elf_obj_tdata elf;
2847 /* Shortcuts to dynamic linker sections. */
2851 /* Used during garbage collection. We attach global symbols defined
2852 on removed .opd entries to this section so that the sym is removed. */
2853 asection *deleted_section;
2855 /* TLS local dynamic got entry handling. Support for multiple GOT
2856 sections means we potentially need one of these for each input bfd. */
2857 struct got_entry tlsld_got;
2860 /* A copy of relocs before they are modified for --emit-relocs. */
2861 Elf_Internal_Rela *relocs;
2863 /* Section contents. */
2867 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2868 the reloc to be in the range -32768 to 32767. */
2869 unsigned int has_small_toc_reloc : 1;
2871 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2872 instruction not one we handle. */
2873 unsigned int unexpected_toc_insn : 1;
2876 #define ppc64_elf_tdata(bfd) \
2877 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2879 #define ppc64_tlsld_got(bfd) \
2880 (&ppc64_elf_tdata (bfd)->tlsld_got)
2882 #define is_ppc64_elf(bfd) \
2883 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2884 && elf_object_id (bfd) == PPC64_ELF_DATA)
2886 /* Override the generic function because we store some extras. */
2889 ppc64_elf_mkobject (bfd *abfd)
2891 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2895 /* Fix bad default arch selected for a 64 bit input bfd when the
2896 default is 32 bit. Also select arch based on apuinfo. */
2899 ppc64_elf_object_p (bfd *abfd)
2901 if (!abfd->arch_info->the_default)
2904 if (abfd->arch_info->bits_per_word == 32)
2906 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2908 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2910 /* Relies on arch after 32 bit default being 64 bit default. */
2911 abfd->arch_info = abfd->arch_info->next;
2912 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2915 return _bfd_elf_ppc_set_arch (abfd);
2918 /* Support for core dump NOTE sections. */
2921 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2923 size_t offset, size;
2925 if (note->descsz != 504)
2929 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2932 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2938 /* Make a ".reg/999" section. */
2939 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2940 size, note->descpos + offset);
2944 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2946 if (note->descsz != 136)
2949 elf_tdata (abfd)->core->pid
2950 = bfd_get_32 (abfd, note->descdata + 24);
2951 elf_tdata (abfd)->core->program
2952 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2953 elf_tdata (abfd)->core->command
2954 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2960 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2973 va_start (ap, note_type);
2974 memset (data, 0, sizeof (data));
2975 strncpy (data + 40, va_arg (ap, const char *), 16);
2976 strncpy (data + 56, va_arg (ap, const char *), 80);
2978 return elfcore_write_note (abfd, buf, bufsiz,
2979 "CORE", note_type, data, sizeof (data));
2990 va_start (ap, note_type);
2991 memset (data, 0, 112);
2992 pid = va_arg (ap, long);
2993 bfd_put_32 (abfd, pid, data + 32);
2994 cursig = va_arg (ap, int);
2995 bfd_put_16 (abfd, cursig, data + 12);
2996 greg = va_arg (ap, const void *);
2997 memcpy (data + 112, greg, 384);
2998 memset (data + 496, 0, 8);
3000 return elfcore_write_note (abfd, buf, bufsiz,
3001 "CORE", note_type, data, sizeof (data));
3006 /* Add extra PPC sections. */
3008 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
3010 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
3011 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3012 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3013 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3014 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3015 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3016 { NULL, 0, 0, 0, 0 }
3019 enum _ppc64_sec_type {
3025 struct _ppc64_elf_section_data
3027 struct bfd_elf_section_data elf;
3031 /* An array with one entry for each opd function descriptor,
3032 and some spares since opd entries may be either 16 or 24 bytes. */
3033 #define OPD_NDX(OFF) ((OFF) >> 4)
3034 struct _opd_sec_data
3036 /* Points to the function code section for local opd entries. */
3037 asection **func_sec;
3039 /* After editing .opd, adjust references to opd local syms. */
3043 /* An array for toc sections, indexed by offset/8. */
3044 struct _toc_sec_data
3046 /* Specifies the relocation symbol index used at a given toc offset. */
3049 /* And the relocation addend. */
3054 enum _ppc64_sec_type sec_type:2;
3056 /* Flag set when small branches are detected. Used to
3057 select suitable defaults for the stub group size. */
3058 unsigned int has_14bit_branch:1;
3061 #define ppc64_elf_section_data(sec) \
3062 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
3065 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
3067 if (!sec->used_by_bfd)
3069 struct _ppc64_elf_section_data *sdata;
3070 bfd_size_type amt = sizeof (*sdata);
3072 sdata = bfd_zalloc (abfd, amt);
3075 sec->used_by_bfd = sdata;
3078 return _bfd_elf_new_section_hook (abfd, sec);
3081 static struct _opd_sec_data *
3082 get_opd_info (asection * sec)
3085 && ppc64_elf_section_data (sec) != NULL
3086 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
3087 return &ppc64_elf_section_data (sec)->u.opd;
3091 /* Parameters for the qsort hook. */
3092 static bfd_boolean synthetic_relocatable;
3093 static asection *synthetic_opd;
3095 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
3098 compare_symbols (const void *ap, const void *bp)
3100 const asymbol *a = * (const asymbol **) ap;
3101 const asymbol *b = * (const asymbol **) bp;
3103 /* Section symbols first. */
3104 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
3106 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
3109 /* then .opd symbols. */
3110 if (synthetic_opd != NULL)
3112 if (strcmp (a->section->name, ".opd") == 0
3113 && strcmp (b->section->name, ".opd") != 0)
3115 if (strcmp (a->section->name, ".opd") != 0
3116 && strcmp (b->section->name, ".opd") == 0)
3120 /* then other code symbols. */
3121 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3122 == (SEC_CODE | SEC_ALLOC)
3123 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3124 != (SEC_CODE | SEC_ALLOC))
3127 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3128 != (SEC_CODE | SEC_ALLOC)
3129 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3130 == (SEC_CODE | SEC_ALLOC))
3133 if (synthetic_relocatable)
3135 if (a->section->id < b->section->id)
3138 if (a->section->id > b->section->id)
3142 if (a->value + a->section->vma < b->value + b->section->vma)
3145 if (a->value + a->section->vma > b->value + b->section->vma)
3148 /* For syms with the same value, prefer strong dynamic global function
3149 syms over other syms. */
3150 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3153 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3156 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3159 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3162 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3165 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3168 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3171 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3177 /* Search SYMS for a symbol of the given VALUE. */
3180 sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
3184 if (id == (unsigned) -1)
3188 mid = (lo + hi) >> 1;
3189 if (syms[mid]->value + syms[mid]->section->vma < value)
3191 else if (syms[mid]->value + syms[mid]->section->vma > value)
3201 mid = (lo + hi) >> 1;
3202 if (syms[mid]->section->id < id)
3204 else if (syms[mid]->section->id > id)
3206 else if (syms[mid]->value < value)
3208 else if (syms[mid]->value > value)
3218 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3220 bfd_vma vma = *(bfd_vma *) ptr;
3221 return ((section->flags & SEC_ALLOC) != 0
3222 && section->vma <= vma
3223 && vma < section->vma + section->size);
3226 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3227 entry syms. Also generate @plt symbols for the glink branch table.
3228 Returns count of synthetic symbols in RET or -1 on error. */
3231 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3232 long static_count, asymbol **static_syms,
3233 long dyn_count, asymbol **dyn_syms,
3240 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3241 asection *opd = NULL;
3242 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3244 int abi = abiversion (abfd);
3250 opd = bfd_get_section_by_name (abfd, ".opd");
3251 if (opd == NULL && abi == 1)
3255 symcount = static_count;
3257 symcount += dyn_count;
3261 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3265 if (!relocatable && static_count != 0 && dyn_count != 0)
3267 /* Use both symbol tables. */
3268 memcpy (syms, static_syms, static_count * sizeof (*syms));
3269 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3271 else if (!relocatable && static_count == 0)
3272 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3274 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3276 synthetic_relocatable = relocatable;
3277 synthetic_opd = opd;
3278 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3280 if (!relocatable && symcount > 1)
3283 /* Trim duplicate syms, since we may have merged the normal and
3284 dynamic symbols. Actually, we only care about syms that have
3285 different values, so trim any with the same value. */
3286 for (i = 1, j = 1; i < symcount; ++i)
3287 if (syms[i - 1]->value + syms[i - 1]->section->vma
3288 != syms[i]->value + syms[i]->section->vma)
3289 syms[j++] = syms[i];
3294 /* Note that here and in compare_symbols we can't compare opd and
3295 sym->section directly. With separate debug info files, the
3296 symbols will be extracted from the debug file while abfd passed
3297 to this function is the real binary. */
3298 if (opd != NULL && strcmp (syms[i]->section->name, ".opd") == 0)
3302 for (; i < symcount; ++i)
3303 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3304 != (SEC_CODE | SEC_ALLOC))
3305 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3309 for (; i < symcount; ++i)
3310 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3315 for (; i < symcount; ++i)
3316 if (strcmp (syms[i]->section->name, ".opd") != 0)
3320 for (; i < symcount; ++i)
3321 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3322 != (SEC_CODE | SEC_ALLOC))
3330 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3335 if (opdsymend == secsymend)
3338 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3339 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3343 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3350 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3354 while (r < opd->relocation + relcount
3355 && r->address < syms[i]->value + opd->vma)
3358 if (r == opd->relocation + relcount)
3361 if (r->address != syms[i]->value + opd->vma)
3364 if (r->howto->type != R_PPC64_ADDR64)
3367 sym = *r->sym_ptr_ptr;
3368 if (!sym_exists_at (syms, opdsymend, symcount,
3369 sym->section->id, sym->value + r->addend))
3372 size += sizeof (asymbol);
3373 size += strlen (syms[i]->name) + 2;
3379 s = *ret = bfd_malloc (size);
3386 names = (char *) (s + count);
3388 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3392 while (r < opd->relocation + relcount
3393 && r->address < syms[i]->value + opd->vma)
3396 if (r == opd->relocation + relcount)
3399 if (r->address != syms[i]->value + opd->vma)
3402 if (r->howto->type != R_PPC64_ADDR64)
3405 sym = *r->sym_ptr_ptr;
3406 if (!sym_exists_at (syms, opdsymend, symcount,
3407 sym->section->id, sym->value + r->addend))
3412 s->flags |= BSF_SYNTHETIC;
3413 s->section = sym->section;
3414 s->value = sym->value + r->addend;
3417 len = strlen (syms[i]->name);
3418 memcpy (names, syms[i]->name, len + 1);
3420 /* Have udata.p point back to the original symbol this
3421 synthetic symbol was derived from. */
3422 s->udata.p = syms[i];
3429 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3430 bfd_byte *contents = NULL;
3433 bfd_vma glink_vma = 0, resolv_vma = 0;
3434 asection *dynamic, *glink = NULL, *relplt = NULL;
3437 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3439 free_contents_and_exit_err:
3441 free_contents_and_exit:
3448 for (i = secsymend; i < opdsymend; ++i)
3452 /* Ignore bogus symbols. */
3453 if (syms[i]->value > opd->size - 8)
3456 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3457 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3460 size += sizeof (asymbol);
3461 size += strlen (syms[i]->name) + 2;
3465 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3467 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3469 bfd_byte *dynbuf, *extdyn, *extdynend;
3471 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3473 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3474 goto free_contents_and_exit_err;
3476 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3477 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3480 extdynend = extdyn + dynamic->size;
3481 for (; extdyn < extdynend; extdyn += extdynsize)
3483 Elf_Internal_Dyn dyn;
3484 (*swap_dyn_in) (abfd, extdyn, &dyn);
3486 if (dyn.d_tag == DT_NULL)
3489 if (dyn.d_tag == DT_PPC64_GLINK)
3491 /* The first glink stub starts at offset 32; see
3492 comment in ppc64_elf_finish_dynamic_sections. */
3493 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3494 /* The .glink section usually does not survive the final
3495 link; search for the section (usually .text) where the
3496 glink stubs now reside. */
3497 glink = bfd_sections_find_if (abfd, section_covers_vma,
3508 /* Determine __glink trampoline by reading the relative branch
3509 from the first glink stub. */
3511 unsigned int off = 0;
3513 while (bfd_get_section_contents (abfd, glink, buf,
3514 glink_vma + off - glink->vma, 4))
3516 unsigned int insn = bfd_get_32 (abfd, buf);
3518 if ((insn & ~0x3fffffc) == 0)
3520 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3529 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3531 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3534 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3535 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3536 goto free_contents_and_exit_err;
3538 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3539 size += plt_count * sizeof (asymbol);
3541 p = relplt->relocation;
3542 for (i = 0; i < plt_count; i++, p++)
3544 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3546 size += sizeof ("+0x") - 1 + 16;
3552 goto free_contents_and_exit;
3553 s = *ret = bfd_malloc (size);
3555 goto free_contents_and_exit_err;
3557 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3559 for (i = secsymend; i < opdsymend; ++i)
3563 if (syms[i]->value > opd->size - 8)
3566 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3567 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3571 asection *sec = abfd->sections;
3578 long mid = (lo + hi) >> 1;
3579 if (syms[mid]->section->vma < ent)
3581 else if (syms[mid]->section->vma > ent)
3585 sec = syms[mid]->section;
3590 if (lo >= hi && lo > codesecsym)
3591 sec = syms[lo - 1]->section;
3593 for (; sec != NULL; sec = sec->next)
3597 /* SEC_LOAD may not be set if SEC is from a separate debug
3599 if ((sec->flags & SEC_ALLOC) == 0)
3601 if ((sec->flags & SEC_CODE) != 0)
3604 s->flags |= BSF_SYNTHETIC;
3605 s->value = ent - s->section->vma;
3608 len = strlen (syms[i]->name);
3609 memcpy (names, syms[i]->name, len + 1);
3611 /* Have udata.p point back to the original symbol this
3612 synthetic symbol was derived from. */
3613 s->udata.p = syms[i];
3619 if (glink != NULL && relplt != NULL)
3623 /* Add a symbol for the main glink trampoline. */
3624 memset (s, 0, sizeof *s);
3626 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3628 s->value = resolv_vma - glink->vma;
3630 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3631 names += sizeof ("__glink_PLTresolve");
3636 /* FIXME: It would be very much nicer to put sym@plt on the
3637 stub rather than on the glink branch table entry. The
3638 objdump disassembler would then use a sensible symbol
3639 name on plt calls. The difficulty in doing so is
3640 a) finding the stubs, and,
3641 b) matching stubs against plt entries, and,
3642 c) there can be multiple stubs for a given plt entry.
3644 Solving (a) could be done by code scanning, but older
3645 ppc64 binaries used different stubs to current code.
3646 (b) is the tricky one since you need to known the toc
3647 pointer for at least one function that uses a pic stub to
3648 be able to calculate the plt address referenced.
3649 (c) means gdb would need to set multiple breakpoints (or
3650 find the glink branch itself) when setting breakpoints
3651 for pending shared library loads. */
3652 p = relplt->relocation;
3653 for (i = 0; i < plt_count; i++, p++)
3657 *s = **p->sym_ptr_ptr;
3658 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3659 we are defining a symbol, ensure one of them is set. */
3660 if ((s->flags & BSF_LOCAL) == 0)
3661 s->flags |= BSF_GLOBAL;
3662 s->flags |= BSF_SYNTHETIC;
3664 s->value = glink_vma - glink->vma;
3667 len = strlen ((*p->sym_ptr_ptr)->name);
3668 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3672 memcpy (names, "+0x", sizeof ("+0x") - 1);
3673 names += sizeof ("+0x") - 1;
3674 bfd_sprintf_vma (abfd, names, p->addend);
3675 names += strlen (names);
3677 memcpy (names, "@plt", sizeof ("@plt"));
3678 names += sizeof ("@plt");
3698 /* The following functions are specific to the ELF linker, while
3699 functions above are used generally. Those named ppc64_elf_* are
3700 called by the main ELF linker code. They appear in this file more
3701 or less in the order in which they are called. eg.
3702 ppc64_elf_check_relocs is called early in the link process,
3703 ppc64_elf_finish_dynamic_sections is one of the last functions
3706 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3707 functions have both a function code symbol and a function descriptor
3708 symbol. A call to foo in a relocatable object file looks like:
3715 The function definition in another object file might be:
3719 . .quad .TOC.@tocbase
3725 When the linker resolves the call during a static link, the branch
3726 unsurprisingly just goes to .foo and the .opd information is unused.
3727 If the function definition is in a shared library, things are a little
3728 different: The call goes via a plt call stub, the opd information gets
3729 copied to the plt, and the linker patches the nop.
3737 . std 2,40(1) # in practice, the call stub
3738 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3739 . addi 11,11,Lfoo@toc@l # this is the general idea
3747 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3749 The "reloc ()" notation is supposed to indicate that the linker emits
3750 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3753 What are the difficulties here? Well, firstly, the relocations
3754 examined by the linker in check_relocs are against the function code
3755 sym .foo, while the dynamic relocation in the plt is emitted against
3756 the function descriptor symbol, foo. Somewhere along the line, we need
3757 to carefully copy dynamic link information from one symbol to the other.
3758 Secondly, the generic part of the elf linker will make .foo a dynamic
3759 symbol as is normal for most other backends. We need foo dynamic
3760 instead, at least for an application final link. However, when
3761 creating a shared library containing foo, we need to have both symbols
3762 dynamic so that references to .foo are satisfied during the early
3763 stages of linking. Otherwise the linker might decide to pull in a
3764 definition from some other object, eg. a static library.
3766 Update: As of August 2004, we support a new convention. Function
3767 calls may use the function descriptor symbol, ie. "bl foo". This
3768 behaves exactly as "bl .foo". */
3770 /* Of those relocs that might be copied as dynamic relocs, this function
3771 selects those that must be copied when linking a shared library,
3772 even when the symbol is local. */
3775 must_be_dyn_reloc (struct bfd_link_info *info,
3776 enum elf_ppc64_reloc_type r_type)
3788 case R_PPC64_TPREL16:
3789 case R_PPC64_TPREL16_LO:
3790 case R_PPC64_TPREL16_HI:
3791 case R_PPC64_TPREL16_HA:
3792 case R_PPC64_TPREL16_DS:
3793 case R_PPC64_TPREL16_LO_DS:
3794 case R_PPC64_TPREL16_HIGH:
3795 case R_PPC64_TPREL16_HIGHA:
3796 case R_PPC64_TPREL16_HIGHER:
3797 case R_PPC64_TPREL16_HIGHERA:
3798 case R_PPC64_TPREL16_HIGHEST:
3799 case R_PPC64_TPREL16_HIGHESTA:
3800 case R_PPC64_TPREL64:
3801 return !bfd_link_executable (info);
3805 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3806 copying dynamic variables from a shared lib into an app's dynbss
3807 section, and instead use a dynamic relocation to point into the
3808 shared lib. With code that gcc generates, it's vital that this be
3809 enabled; In the PowerPC64 ABI, the address of a function is actually
3810 the address of a function descriptor, which resides in the .opd
3811 section. gcc uses the descriptor directly rather than going via the
3812 GOT as some other ABI's do, which means that initialized function
3813 pointers must reference the descriptor. Thus, a function pointer
3814 initialized to the address of a function in a shared library will
3815 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3816 redefines the function descriptor symbol to point to the copy. This
3817 presents a problem as a plt entry for that function is also
3818 initialized from the function descriptor symbol and the copy reloc
3819 may not be initialized first. */
3820 #define ELIMINATE_COPY_RELOCS 1
3822 /* Section name for stubs is the associated section name plus this
3824 #define STUB_SUFFIX ".stub"
3827 ppc_stub_long_branch:
3828 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3829 destination, but a 24 bit branch in a stub section will reach.
3832 ppc_stub_plt_branch:
3833 Similar to the above, but a 24 bit branch in the stub section won't
3834 reach its destination.
3835 . addis %r11,%r2,xxx@toc@ha
3836 . ld %r12,xxx@toc@l(%r11)
3841 Used to call a function in a shared library. If it so happens that
3842 the plt entry referenced crosses a 64k boundary, then an extra
3843 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3845 . addis %r11,%r2,xxx@toc@ha
3846 . ld %r12,xxx+0@toc@l(%r11)
3848 . ld %r2,xxx+8@toc@l(%r11)
3849 . ld %r11,xxx+16@toc@l(%r11)
3852 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3853 code to adjust the value and save r2 to support multiple toc sections.
3854 A ppc_stub_long_branch with an r2 offset looks like:
3856 . addis %r2,%r2,off@ha
3857 . addi %r2,%r2,off@l
3860 A ppc_stub_plt_branch with an r2 offset looks like:
3862 . addis %r11,%r2,xxx@toc@ha
3863 . ld %r12,xxx@toc@l(%r11)
3864 . addis %r2,%r2,off@ha
3865 . addi %r2,%r2,off@l
3869 In cases where the "addis" instruction would add zero, the "addis" is
3870 omitted and following instructions modified slightly in some cases.
3873 enum ppc_stub_type {
3875 ppc_stub_long_branch,
3876 ppc_stub_long_branch_r2off,
3877 ppc_stub_plt_branch,
3878 ppc_stub_plt_branch_r2off,
3880 ppc_stub_plt_call_r2save,
3881 ppc_stub_global_entry,
3885 /* Information on stub grouping. */
3888 /* The stub section. */
3890 /* This is the section to which stubs in the group will be attached. */
3893 struct map_stub *next;
3894 /* Whether to emit a copy of register save/restore functions in this
3899 struct ppc_stub_hash_entry {
3901 /* Base hash table entry structure. */
3902 struct bfd_hash_entry root;
3904 enum ppc_stub_type stub_type;
3906 /* Group information. */
3907 struct map_stub *group;
3909 /* Offset within stub_sec of the beginning of this stub. */
3910 bfd_vma stub_offset;
3912 /* Given the symbol's value and its section we can determine its final
3913 value when building the stubs (so the stub knows where to jump. */
3914 bfd_vma target_value;
3915 asection *target_section;
3917 /* The symbol table entry, if any, that this was derived from. */
3918 struct ppc_link_hash_entry *h;
3919 struct plt_entry *plt_ent;
3921 /* Symbol st_other. */
3922 unsigned char other;
3925 struct ppc_branch_hash_entry {
3927 /* Base hash table entry structure. */
3928 struct bfd_hash_entry root;
3930 /* Offset within branch lookup table. */
3931 unsigned int offset;
3933 /* Generation marker. */
3937 /* Used to track dynamic relocations for local symbols. */
3938 struct ppc_dyn_relocs
3940 struct ppc_dyn_relocs *next;
3942 /* The input section of the reloc. */
3945 /* Total number of relocs copied for the input section. */
3946 unsigned int count : 31;
3948 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3949 unsigned int ifunc : 1;
3952 struct ppc_link_hash_entry
3954 struct elf_link_hash_entry elf;
3957 /* A pointer to the most recently used stub hash entry against this
3959 struct ppc_stub_hash_entry *stub_cache;
3961 /* A pointer to the next symbol starting with a '.' */
3962 struct ppc_link_hash_entry *next_dot_sym;
3965 /* Track dynamic relocs copied for this symbol. */
3966 struct elf_dyn_relocs *dyn_relocs;
3968 /* Chain of aliases referring to a weakdef. */
3969 struct ppc_link_hash_entry *weakref;
3971 /* Link between function code and descriptor symbols. */
3972 struct ppc_link_hash_entry *oh;
3974 /* Flag function code and descriptor symbols. */
3975 unsigned int is_func:1;
3976 unsigned int is_func_descriptor:1;
3977 unsigned int fake:1;
3979 /* Whether global opd/toc sym has been adjusted or not.
3980 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3981 should be set for all globals defined in any opd/toc section. */
3982 unsigned int adjust_done:1;
3984 /* Set if this is an out-of-line register save/restore function,
3985 with non-standard calling convention. */
3986 unsigned int save_res:1;
3988 /* Contexts in which symbol is used in the GOT (or TOC).
3989 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3990 corresponding relocs are encountered during check_relocs.
3991 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3992 indicate the corresponding GOT entry type is not needed.
3993 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3994 a TPREL one. We use a separate flag rather than setting TPREL
3995 just for convenience in distinguishing the two cases. */
3996 #define TLS_GD 1 /* GD reloc. */
3997 #define TLS_LD 2 /* LD reloc. */
3998 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3999 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
4000 #define TLS_TLS 16 /* Any TLS reloc. */
4001 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4002 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
4003 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
4004 unsigned char tls_mask;
4007 /* ppc64 ELF linker hash table. */
4009 struct ppc_link_hash_table
4011 struct elf_link_hash_table elf;
4013 /* The stub hash table. */
4014 struct bfd_hash_table stub_hash_table;
4016 /* Another hash table for plt_branch stubs. */
4017 struct bfd_hash_table branch_hash_table;
4019 /* Hash table for function prologue tocsave. */
4020 htab_t tocsave_htab;
4022 /* Various options and other info passed from the linker. */
4023 struct ppc64_elf_params *params;
4025 /* The size of sec_info below. */
4026 unsigned int sec_info_arr_size;
4028 /* Per-section array of extra section info. Done this way rather
4029 than as part of ppc64_elf_section_data so we have the info for
4030 non-ppc64 sections. */
4033 /* Along with elf_gp, specifies the TOC pointer used by this section. */
4038 /* The section group that this section belongs to. */
4039 struct map_stub *group;
4040 /* A temp section list pointer. */
4045 /* Linked list of groups. */
4046 struct map_stub *group;
4048 /* Temp used when calculating TOC pointers. */
4051 asection *toc_first_sec;
4053 /* Used when adding symbols. */
4054 struct ppc_link_hash_entry *dot_syms;
4056 /* Shortcuts to get to dynamic linker sections. */
4061 asection *glink_eh_frame;
4063 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4064 struct ppc_link_hash_entry *tls_get_addr;
4065 struct ppc_link_hash_entry *tls_get_addr_fd;
4067 /* The size of reliplt used by got entry relocs. */
4068 bfd_size_type got_reli_size;
4071 unsigned long stub_count[ppc_stub_global_entry];
4073 /* Number of stubs against global syms. */
4074 unsigned long stub_globals;
4076 /* Set if we're linking code with function descriptors. */
4077 unsigned int opd_abi:1;
4079 /* Support for multiple toc sections. */
4080 unsigned int do_multi_toc:1;
4081 unsigned int multi_toc_needed:1;
4082 unsigned int second_toc_pass:1;
4083 unsigned int do_toc_opt:1;
4086 unsigned int stub_error:1;
4088 /* Whether func_desc_adjust needs to be run over symbols. */
4089 unsigned int need_func_desc_adj:1;
4091 /* Incremented every time we size stubs. */
4092 unsigned int stub_iteration;
4094 /* Small local sym cache. */
4095 struct sym_cache sym_cache;
4098 /* Rename some of the generic section flags to better document how they
4101 /* Nonzero if this section has TLS related relocations. */
4102 #define has_tls_reloc sec_flg0
4104 /* Nonzero if this section has a call to __tls_get_addr. */
4105 #define has_tls_get_addr_call sec_flg1
4107 /* Nonzero if this section has any toc or got relocs. */
4108 #define has_toc_reloc sec_flg2
4110 /* Nonzero if this section has a call to another section that uses
4112 #define makes_toc_func_call sec_flg3
4114 /* Recursion protection when determining above flag. */
4115 #define call_check_in_progress sec_flg4
4116 #define call_check_done sec_flg5
4118 /* Get the ppc64 ELF linker hash table from a link_info structure. */
4120 #define ppc_hash_table(p) \
4121 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4122 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4124 #define ppc_stub_hash_lookup(table, string, create, copy) \
4125 ((struct ppc_stub_hash_entry *) \
4126 bfd_hash_lookup ((table), (string), (create), (copy)))
4128 #define ppc_branch_hash_lookup(table, string, create, copy) \
4129 ((struct ppc_branch_hash_entry *) \
4130 bfd_hash_lookup ((table), (string), (create), (copy)))
4132 /* Create an entry in the stub hash table. */
4134 static struct bfd_hash_entry *
4135 stub_hash_newfunc (struct bfd_hash_entry *entry,
4136 struct bfd_hash_table *table,
4139 /* Allocate the structure if it has not already been allocated by a
4143 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4148 /* Call the allocation method of the superclass. */
4149 entry = bfd_hash_newfunc (entry, table, string);
4152 struct ppc_stub_hash_entry *eh;
4154 /* Initialize the local fields. */
4155 eh = (struct ppc_stub_hash_entry *) entry;
4156 eh->stub_type = ppc_stub_none;
4158 eh->stub_offset = 0;
4159 eh->target_value = 0;
4160 eh->target_section = NULL;
4169 /* Create an entry in the branch hash table. */
4171 static struct bfd_hash_entry *
4172 branch_hash_newfunc (struct bfd_hash_entry *entry,
4173 struct bfd_hash_table *table,
4176 /* Allocate the structure if it has not already been allocated by a
4180 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4185 /* Call the allocation method of the superclass. */
4186 entry = bfd_hash_newfunc (entry, table, string);
4189 struct ppc_branch_hash_entry *eh;
4191 /* Initialize the local fields. */
4192 eh = (struct ppc_branch_hash_entry *) entry;
4200 /* Create an entry in a ppc64 ELF linker hash table. */
4202 static struct bfd_hash_entry *
4203 link_hash_newfunc (struct bfd_hash_entry *entry,
4204 struct bfd_hash_table *table,
4207 /* Allocate the structure if it has not already been allocated by a
4211 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4216 /* Call the allocation method of the superclass. */
4217 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4220 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4222 memset (&eh->u.stub_cache, 0,
4223 (sizeof (struct ppc_link_hash_entry)
4224 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4226 /* When making function calls, old ABI code references function entry
4227 points (dot symbols), while new ABI code references the function
4228 descriptor symbol. We need to make any combination of reference and
4229 definition work together, without breaking archive linking.
4231 For a defined function "foo" and an undefined call to "bar":
4232 An old object defines "foo" and ".foo", references ".bar" (possibly
4234 A new object defines "foo" and references "bar".
4236 A new object thus has no problem with its undefined symbols being
4237 satisfied by definitions in an old object. On the other hand, the
4238 old object won't have ".bar" satisfied by a new object.
4240 Keep a list of newly added dot-symbols. */
4242 if (string[0] == '.')
4244 struct ppc_link_hash_table *htab;
4246 htab = (struct ppc_link_hash_table *) table;
4247 eh->u.next_dot_sym = htab->dot_syms;
4248 htab->dot_syms = eh;
4255 struct tocsave_entry {
4261 tocsave_htab_hash (const void *p)
4263 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4264 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4268 tocsave_htab_eq (const void *p1, const void *p2)
4270 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4271 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4272 return e1->sec == e2->sec && e1->offset == e2->offset;
4275 /* Destroy a ppc64 ELF linker hash table. */
4278 ppc64_elf_link_hash_table_free (bfd *obfd)
4280 struct ppc_link_hash_table *htab;
4282 htab = (struct ppc_link_hash_table *) obfd->link.hash;
4283 if (htab->tocsave_htab)
4284 htab_delete (htab->tocsave_htab);
4285 bfd_hash_table_free (&htab->branch_hash_table);
4286 bfd_hash_table_free (&htab->stub_hash_table);
4287 _bfd_elf_link_hash_table_free (obfd);
4290 /* Create a ppc64 ELF linker hash table. */
4292 static struct bfd_link_hash_table *
4293 ppc64_elf_link_hash_table_create (bfd *abfd)
4295 struct ppc_link_hash_table *htab;
4296 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4298 htab = bfd_zmalloc (amt);
4302 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4303 sizeof (struct ppc_link_hash_entry),
4310 /* Init the stub hash table too. */
4311 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4312 sizeof (struct ppc_stub_hash_entry)))
4314 _bfd_elf_link_hash_table_free (abfd);
4318 /* And the branch hash table. */
4319 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4320 sizeof (struct ppc_branch_hash_entry)))
4322 bfd_hash_table_free (&htab->stub_hash_table);
4323 _bfd_elf_link_hash_table_free (abfd);
4327 htab->tocsave_htab = htab_try_create (1024,
4331 if (htab->tocsave_htab == NULL)
4333 ppc64_elf_link_hash_table_free (abfd);
4336 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
4338 /* Initializing two fields of the union is just cosmetic. We really
4339 only care about glist, but when compiled on a 32-bit host the
4340 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4341 debugger inspection of these fields look nicer. */
4342 htab->elf.init_got_refcount.refcount = 0;
4343 htab->elf.init_got_refcount.glist = NULL;
4344 htab->elf.init_plt_refcount.refcount = 0;
4345 htab->elf.init_plt_refcount.glist = NULL;
4346 htab->elf.init_got_offset.offset = 0;
4347 htab->elf.init_got_offset.glist = NULL;
4348 htab->elf.init_plt_offset.offset = 0;
4349 htab->elf.init_plt_offset.glist = NULL;
4351 return &htab->elf.root;
4354 /* Create sections for linker generated code. */
4357 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4359 struct ppc_link_hash_table *htab;
4362 htab = ppc_hash_table (info);
4364 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4365 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4366 if (htab->params->save_restore_funcs)
4368 /* Create .sfpr for code to save and restore fp regs. */
4369 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4371 if (htab->sfpr == NULL
4372 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4376 if (bfd_link_relocatable (info))
4379 /* Create .glink for lazy dynamic linking support. */
4380 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4382 if (htab->glink == NULL
4383 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4386 if (!info->no_ld_generated_unwind_info)
4388 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4389 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4390 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4393 if (htab->glink_eh_frame == NULL
4394 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4398 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4399 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4400 if (htab->elf.iplt == NULL
4401 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4404 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4405 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4407 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4408 if (htab->elf.irelplt == NULL
4409 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4412 /* Create branch lookup table for plt_branch stubs. */
4413 flags = (SEC_ALLOC | SEC_LOAD
4414 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4415 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4417 if (htab->brlt == NULL
4418 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4421 if (!bfd_link_pic (info))
4424 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4425 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4426 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4429 if (htab->relbrlt == NULL
4430 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4436 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4439 ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4440 struct ppc64_elf_params *params)
4442 struct ppc_link_hash_table *htab;
4444 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
4446 /* Always hook our dynamic sections into the first bfd, which is the
4447 linker created stub bfd. This ensures that the GOT header is at
4448 the start of the output TOC section. */
4449 htab = ppc_hash_table (info);
4450 htab->elf.dynobj = params->stub_bfd;
4451 htab->params = params;
4453 return create_linkage_sections (htab->elf.dynobj, info);
4456 /* Build a name for an entry in the stub hash table. */
4459 ppc_stub_name (const asection *input_section,
4460 const asection *sym_sec,
4461 const struct ppc_link_hash_entry *h,
4462 const Elf_Internal_Rela *rel)
4467 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4468 offsets from a sym as a branch target? In fact, we could
4469 probably assume the addend is always zero. */
4470 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4474 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4475 stub_name = bfd_malloc (len);
4476 if (stub_name == NULL)
4479 len = sprintf (stub_name, "%08x.%s+%x",
4480 input_section->id & 0xffffffff,
4481 h->elf.root.root.string,
4482 (int) rel->r_addend & 0xffffffff);
4486 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4487 stub_name = bfd_malloc (len);
4488 if (stub_name == NULL)
4491 len = sprintf (stub_name, "%08x.%x:%x+%x",
4492 input_section->id & 0xffffffff,
4493 sym_sec->id & 0xffffffff,
4494 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4495 (int) rel->r_addend & 0xffffffff);
4497 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4498 stub_name[len - 2] = 0;
4502 /* Look up an entry in the stub hash. Stub entries are cached because
4503 creating the stub name takes a bit of time. */
4505 static struct ppc_stub_hash_entry *
4506 ppc_get_stub_entry (const asection *input_section,
4507 const asection *sym_sec,
4508 struct ppc_link_hash_entry *h,
4509 const Elf_Internal_Rela *rel,
4510 struct ppc_link_hash_table *htab)
4512 struct ppc_stub_hash_entry *stub_entry;
4513 struct map_stub *group;
4515 /* If this input section is part of a group of sections sharing one
4516 stub section, then use the id of the first section in the group.
4517 Stub names need to include a section id, as there may well be
4518 more than one stub used to reach say, printf, and we need to
4519 distinguish between them. */
4520 group = htab->sec_info[input_section->id].u.group;
4524 if (h != NULL && h->u.stub_cache != NULL
4525 && h->u.stub_cache->h == h
4526 && h->u.stub_cache->group == group)
4528 stub_entry = h->u.stub_cache;
4534 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
4535 if (stub_name == NULL)
4538 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4539 stub_name, FALSE, FALSE);
4541 h->u.stub_cache = stub_entry;
4549 /* Add a new stub entry to the stub hash. Not all fields of the new
4550 stub entry are initialised. */
4552 static struct ppc_stub_hash_entry *
4553 ppc_add_stub (const char *stub_name,
4555 struct bfd_link_info *info)
4557 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4558 struct map_stub *group;
4561 struct ppc_stub_hash_entry *stub_entry;
4563 group = htab->sec_info[section->id].u.group;
4564 link_sec = group->link_sec;
4565 stub_sec = group->stub_sec;
4566 if (stub_sec == NULL)
4572 namelen = strlen (link_sec->name);
4573 len = namelen + sizeof (STUB_SUFFIX);
4574 s_name = bfd_alloc (htab->params->stub_bfd, len);
4578 memcpy (s_name, link_sec->name, namelen);
4579 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4580 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4581 if (stub_sec == NULL)
4583 group->stub_sec = stub_sec;
4586 /* Enter this entry into the linker stub hash table. */
4587 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4589 if (stub_entry == NULL)
4591 /* xgettext:c-format */
4592 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4593 section->owner, stub_name);
4597 stub_entry->group = group;
4598 stub_entry->stub_offset = 0;
4602 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4603 not already done. */
4606 create_got_section (bfd *abfd, struct bfd_link_info *info)
4608 asection *got, *relgot;
4610 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4612 if (!is_ppc64_elf (abfd))
4618 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4621 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4622 | SEC_LINKER_CREATED);
4624 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4626 || !bfd_set_section_alignment (abfd, got, 3))
4629 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4630 flags | SEC_READONLY);
4632 || ! bfd_set_section_alignment (abfd, relgot, 3))
4635 ppc64_elf_tdata (abfd)->got = got;
4636 ppc64_elf_tdata (abfd)->relgot = relgot;
4640 /* Follow indirect and warning symbol links. */
4642 static inline struct bfd_link_hash_entry *
4643 follow_link (struct bfd_link_hash_entry *h)
4645 while (h->type == bfd_link_hash_indirect
4646 || h->type == bfd_link_hash_warning)
4651 static inline struct elf_link_hash_entry *
4652 elf_follow_link (struct elf_link_hash_entry *h)
4654 return (struct elf_link_hash_entry *) follow_link (&h->root);
4657 static inline struct ppc_link_hash_entry *
4658 ppc_follow_link (struct ppc_link_hash_entry *h)
4660 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4663 /* Merge PLT info on FROM with that on TO. */
4666 move_plt_plist (struct ppc_link_hash_entry *from,
4667 struct ppc_link_hash_entry *to)
4669 if (from->elf.plt.plist != NULL)
4671 if (to->elf.plt.plist != NULL)
4673 struct plt_entry **entp;
4674 struct plt_entry *ent;
4676 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4678 struct plt_entry *dent;
4680 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4681 if (dent->addend == ent->addend)
4683 dent->plt.refcount += ent->plt.refcount;
4690 *entp = to->elf.plt.plist;
4693 to->elf.plt.plist = from->elf.plt.plist;
4694 from->elf.plt.plist = NULL;
4698 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4701 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4702 struct elf_link_hash_entry *dir,
4703 struct elf_link_hash_entry *ind)
4705 struct ppc_link_hash_entry *edir, *eind;
4707 edir = (struct ppc_link_hash_entry *) dir;
4708 eind = (struct ppc_link_hash_entry *) ind;
4710 edir->is_func |= eind->is_func;
4711 edir->is_func_descriptor |= eind->is_func_descriptor;
4712 edir->tls_mask |= eind->tls_mask;
4713 if (eind->oh != NULL)
4714 edir->oh = ppc_follow_link (eind->oh);
4716 /* If called to transfer flags for a weakdef during processing
4717 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4718 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4719 if (!(ELIMINATE_COPY_RELOCS
4720 && eind->elf.root.type != bfd_link_hash_indirect
4721 && edir->elf.dynamic_adjusted))
4722 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4724 if (edir->elf.versioned != versioned_hidden)
4725 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4726 edir->elf.ref_regular |= eind->elf.ref_regular;
4727 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4728 edir->elf.needs_plt |= eind->elf.needs_plt;
4729 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4731 /* If we were called to copy over info for a weak sym, don't copy
4732 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4733 in order to simplify readonly_dynrelocs and save a field in the
4734 symbol hash entry, but that means dyn_relocs can't be used in any
4735 tests about a specific symbol, or affect other symbol flags which
4737 Chain weakdefs so we can get from the weakdef back to an alias.
4738 The list is circular so that we don't need to use u.weakdef as
4739 well as this list to look at all aliases. */
4740 if (eind->elf.root.type != bfd_link_hash_indirect)
4742 struct ppc_link_hash_entry *cur, *add, *next;
4747 cur = edir->weakref;
4752 /* We can be called twice for the same symbols.
4753 Don't make multiple loops. */
4757 } while (cur != edir);
4759 next = add->weakref;
4762 add->weakref = edir->weakref != NULL ? edir->weakref : edir;
4763 edir->weakref = add;
4766 } while (add != NULL && add != eind);
4770 /* Copy over any dynamic relocs we may have on the indirect sym. */
4771 if (eind->dyn_relocs != NULL)
4773 if (edir->dyn_relocs != NULL)
4775 struct elf_dyn_relocs **pp;
4776 struct elf_dyn_relocs *p;
4778 /* Add reloc counts against the indirect sym to the direct sym
4779 list. Merge any entries against the same section. */
4780 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4782 struct elf_dyn_relocs *q;
4784 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4785 if (q->sec == p->sec)
4787 q->pc_count += p->pc_count;
4788 q->count += p->count;
4795 *pp = edir->dyn_relocs;
4798 edir->dyn_relocs = eind->dyn_relocs;
4799 eind->dyn_relocs = NULL;
4802 /* Copy over got entries that we may have already seen to the
4803 symbol which just became indirect. */
4804 if (eind->elf.got.glist != NULL)
4806 if (edir->elf.got.glist != NULL)
4808 struct got_entry **entp;
4809 struct got_entry *ent;
4811 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4813 struct got_entry *dent;
4815 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4816 if (dent->addend == ent->addend
4817 && dent->owner == ent->owner
4818 && dent->tls_type == ent->tls_type)
4820 dent->got.refcount += ent->got.refcount;
4827 *entp = edir->elf.got.glist;
4830 edir->elf.got.glist = eind->elf.got.glist;
4831 eind->elf.got.glist = NULL;
4834 /* And plt entries. */
4835 move_plt_plist (eind, edir);
4837 if (eind->elf.dynindx != -1)
4839 if (edir->elf.dynindx != -1)
4840 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4841 edir->elf.dynstr_index);
4842 edir->elf.dynindx = eind->elf.dynindx;
4843 edir->elf.dynstr_index = eind->elf.dynstr_index;
4844 eind->elf.dynindx = -1;
4845 eind->elf.dynstr_index = 0;
4849 /* Find the function descriptor hash entry from the given function code
4850 hash entry FH. Link the entries via their OH fields. */
4852 static struct ppc_link_hash_entry *
4853 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4855 struct ppc_link_hash_entry *fdh = fh->oh;
4859 const char *fd_name = fh->elf.root.root.string + 1;
4861 fdh = (struct ppc_link_hash_entry *)
4862 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4866 fdh->is_func_descriptor = 1;
4872 fdh = ppc_follow_link (fdh);
4873 fdh->is_func_descriptor = 1;
4878 /* Make a fake function descriptor sym for the undefined code sym FH. */
4880 static struct ppc_link_hash_entry *
4881 make_fdh (struct bfd_link_info *info,
4882 struct ppc_link_hash_entry *fh)
4884 bfd *abfd = fh->elf.root.u.undef.abfd;
4885 struct bfd_link_hash_entry *bh = NULL;
4886 struct ppc_link_hash_entry *fdh;
4887 flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak
4891 if (!_bfd_generic_link_add_one_symbol (info, abfd,
4892 fh->elf.root.root.string + 1,
4893 flags, bfd_und_section_ptr, 0,
4894 NULL, FALSE, FALSE, &bh))
4897 fdh = (struct ppc_link_hash_entry *) bh;
4898 fdh->elf.non_elf = 0;
4900 fdh->is_func_descriptor = 1;
4907 /* Fix function descriptor symbols defined in .opd sections to be
4911 ppc64_elf_add_symbol_hook (bfd *ibfd,
4912 struct bfd_link_info *info,
4913 Elf_Internal_Sym *isym,
4915 flagword *flags ATTRIBUTE_UNUSED,
4919 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4920 && (ibfd->flags & DYNAMIC) == 0
4921 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
4922 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
4925 && strcmp ((*sec)->name, ".opd") == 0)
4929 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4930 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4931 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4933 /* If the symbol is a function defined in .opd, and the function
4934 code is in a discarded group, let it appear to be undefined. */
4935 if (!bfd_link_relocatable (info)
4936 && (*sec)->reloc_count != 0
4937 && opd_entry_value (*sec, *value, &code_sec, NULL,
4938 FALSE) != (bfd_vma) -1
4939 && discarded_section (code_sec))
4941 *sec = bfd_und_section_ptr;
4942 isym->st_shndx = SHN_UNDEF;
4945 else if (*sec != NULL
4946 && strcmp ((*sec)->name, ".toc") == 0
4947 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4949 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4951 htab->params->object_in_toc = 1;
4954 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4956 if (abiversion (ibfd) == 0)
4957 set_abiversion (ibfd, 2);
4958 else if (abiversion (ibfd) == 1)
4960 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4961 " for ABI version 1\n"), name);
4962 bfd_set_error (bfd_error_bad_value);
4970 /* Merge non-visibility st_other attributes: local entry point. */
4973 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4974 const Elf_Internal_Sym *isym,
4975 bfd_boolean definition,
4976 bfd_boolean dynamic)
4978 if (definition && !dynamic)
4979 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4980 | ELF_ST_VISIBILITY (h->other));
4983 /* Hook called on merging a symbol. We use this to clear "fake" since
4984 we now have a real symbol. */
4987 ppc64_elf_merge_symbol (struct elf_link_hash_entry *h,
4988 const Elf_Internal_Sym *isym ATTRIBUTE_UNUSED,
4989 asection **psec ATTRIBUTE_UNUSED,
4990 bfd_boolean newdef ATTRIBUTE_UNUSED,
4991 bfd_boolean olddef ATTRIBUTE_UNUSED,
4992 bfd *oldbfd ATTRIBUTE_UNUSED,
4993 const asection *oldsec ATTRIBUTE_UNUSED)
4995 ((struct ppc_link_hash_entry *) h)->fake = 0;
4999 /* This function makes an old ABI object reference to ".bar" cause the
5000 inclusion of a new ABI object archive that defines "bar".
5001 NAME is a symbol defined in an archive. Return a symbol in the hash
5002 table that might be satisfied by the archive symbols. */
5004 static struct elf_link_hash_entry *
5005 ppc64_elf_archive_symbol_lookup (bfd *abfd,
5006 struct bfd_link_info *info,
5009 struct elf_link_hash_entry *h;
5013 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
5015 /* Don't return this sym if it is a fake function descriptor
5016 created by add_symbol_adjust. */
5017 && !((struct ppc_link_hash_entry *) h)->fake)
5023 len = strlen (name);
5024 dot_name = bfd_alloc (abfd, len + 2);
5025 if (dot_name == NULL)
5026 return (struct elf_link_hash_entry *) 0 - 1;
5028 memcpy (dot_name + 1, name, len + 1);
5029 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
5030 bfd_release (abfd, dot_name);
5034 /* This function satisfies all old ABI object references to ".bar" if a
5035 new ABI object defines "bar". Well, at least, undefined dot symbols
5036 are made weak. This stops later archive searches from including an
5037 object if we already have a function descriptor definition. It also
5038 prevents the linker complaining about undefined symbols.
5039 We also check and correct mismatched symbol visibility here. The
5040 most restrictive visibility of the function descriptor and the
5041 function entry symbol is used. */
5044 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
5046 struct ppc_link_hash_table *htab;
5047 struct ppc_link_hash_entry *fdh;
5049 if (eh->elf.root.type == bfd_link_hash_warning)
5050 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5052 if (eh->elf.root.type == bfd_link_hash_indirect)
5055 if (eh->elf.root.root.string[0] != '.')
5058 htab = ppc_hash_table (info);
5062 fdh = lookup_fdh (eh, htab);
5064 && !bfd_link_relocatable (info)
5065 && (eh->elf.root.type == bfd_link_hash_undefined
5066 || eh->elf.root.type == bfd_link_hash_undefweak)
5067 && eh->elf.ref_regular)
5069 /* Make an undefined function descriptor sym, in order to
5070 pull in an --as-needed shared lib. Archives are handled
5072 fdh = make_fdh (info, eh);
5079 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5080 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5082 /* Make both descriptor and entry symbol have the most
5083 constraining visibility of either symbol. */
5084 if (entry_vis < descr_vis)
5085 fdh->elf.other += entry_vis - descr_vis;
5086 else if (entry_vis > descr_vis)
5087 eh->elf.other += descr_vis - entry_vis;
5089 /* Propagate reference flags from entry symbol to function
5090 descriptor symbol. */
5091 fdh->elf.root.non_ir_ref |= eh->elf.root.non_ir_ref;
5092 fdh->elf.ref_regular |= eh->elf.ref_regular;
5093 fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak;
5095 if (!fdh->elf.forced_local
5096 && fdh->elf.dynindx == -1
5097 && fdh->elf.versioned != versioned_hidden
5098 && (bfd_link_dll (info)
5099 || fdh->elf.def_dynamic
5100 || fdh->elf.ref_dynamic)
5101 && (eh->elf.ref_regular
5102 || eh->elf.def_regular))
5104 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5112 /* Set up opd section info and abiversion for IBFD, and process list
5113 of dot-symbols we made in link_hash_newfunc. */
5116 ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
5118 struct ppc_link_hash_table *htab;
5119 struct ppc_link_hash_entry **p, *eh;
5120 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
5122 if (opd != NULL && opd->size != 0)
5124 if (abiversion (ibfd) == 0)
5125 set_abiversion (ibfd, 1);
5126 else if (abiversion (ibfd) >= 2)
5128 /* xgettext:c-format */
5129 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5131 ibfd, abiversion (ibfd));
5132 bfd_set_error (bfd_error_bad_value);
5136 if ((ibfd->flags & DYNAMIC) == 0
5137 && (opd->flags & SEC_RELOC) != 0
5138 && opd->reloc_count != 0
5139 && !bfd_is_abs_section (opd->output_section))
5141 /* Garbage collection needs some extra help with .opd sections.
5142 We don't want to necessarily keep everything referenced by
5143 relocs in .opd, as that would keep all functions. Instead,
5144 if we reference an .opd symbol (a function descriptor), we
5145 want to keep the function code symbol's section. This is
5146 easy for global symbols, but for local syms we need to keep
5147 information about the associated function section. */
5149 asection **opd_sym_map;
5151 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
5152 opd_sym_map = bfd_zalloc (ibfd, amt);
5153 if (opd_sym_map == NULL)
5155 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5156 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5157 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5161 if (!is_ppc64_elf (info->output_bfd))
5163 htab = ppc_hash_table (info);
5167 /* For input files without an explicit abiversion in e_flags
5168 we should have flagged any with symbol st_other bits set
5169 as ELFv1 and above flagged those with .opd as ELFv2.
5170 Set the output abiversion if not yet set, and for any input
5171 still ambiguous, take its abiversion from the output.
5172 Differences in ABI are reported later. */
5173 if (abiversion (info->output_bfd) == 0)
5174 set_abiversion (info->output_bfd, abiversion (ibfd));
5175 else if (abiversion (ibfd) == 0)
5176 set_abiversion (ibfd, abiversion (info->output_bfd));
5178 p = &htab->dot_syms;
5179 while ((eh = *p) != NULL)
5182 if (&eh->elf == htab->elf.hgot)
5184 else if (htab->elf.hgot == NULL
5185 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5186 htab->elf.hgot = &eh->elf;
5187 else if (abiversion (ibfd) <= 1)
5189 htab->need_func_desc_adj = 1;
5190 if (!add_symbol_adjust (eh, info))
5193 p = &eh->u.next_dot_sym;
5198 /* Undo hash table changes when an --as-needed input file is determined
5199 not to be needed. */
5202 ppc64_elf_notice_as_needed (bfd *ibfd,
5203 struct bfd_link_info *info,
5204 enum notice_asneeded_action act)
5206 if (act == notice_not_needed)
5208 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5213 htab->dot_syms = NULL;
5215 return _bfd_elf_notice_as_needed (ibfd, info, act);
5218 /* If --just-symbols against a final linked binary, then assume we need
5219 toc adjusting stubs when calling functions defined there. */
5222 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5224 if ((sec->flags & SEC_CODE) != 0
5225 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5226 && is_ppc64_elf (sec->owner))
5228 if (abiversion (sec->owner) >= 2
5229 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5230 sec->has_toc_reloc = 1;
5232 _bfd_elf_link_just_syms (sec, info);
5235 static struct plt_entry **
5236 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5237 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5239 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5240 struct plt_entry **local_plt;
5241 unsigned char *local_got_tls_masks;
5243 if (local_got_ents == NULL)
5245 bfd_size_type size = symtab_hdr->sh_info;
5247 size *= (sizeof (*local_got_ents)
5248 + sizeof (*local_plt)
5249 + sizeof (*local_got_tls_masks));
5250 local_got_ents = bfd_zalloc (abfd, size);
5251 if (local_got_ents == NULL)
5253 elf_local_got_ents (abfd) = local_got_ents;
5256 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5258 struct got_entry *ent;
5260 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5261 if (ent->addend == r_addend
5262 && ent->owner == abfd
5263 && ent->tls_type == tls_type)
5267 bfd_size_type amt = sizeof (*ent);
5268 ent = bfd_alloc (abfd, amt);
5271 ent->next = local_got_ents[r_symndx];
5272 ent->addend = r_addend;
5274 ent->tls_type = tls_type;
5275 ent->is_indirect = FALSE;
5276 ent->got.refcount = 0;
5277 local_got_ents[r_symndx] = ent;
5279 ent->got.refcount += 1;
5282 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5283 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5284 local_got_tls_masks[r_symndx] |= tls_type;
5286 return local_plt + r_symndx;
5290 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5292 struct plt_entry *ent;
5294 for (ent = *plist; ent != NULL; ent = ent->next)
5295 if (ent->addend == addend)
5299 bfd_size_type amt = sizeof (*ent);
5300 ent = bfd_alloc (abfd, amt);
5304 ent->addend = addend;
5305 ent->plt.refcount = 0;
5308 ent->plt.refcount += 1;
5313 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5315 return (r_type == R_PPC64_REL24
5316 || r_type == R_PPC64_REL14
5317 || r_type == R_PPC64_REL14_BRTAKEN
5318 || r_type == R_PPC64_REL14_BRNTAKEN
5319 || r_type == R_PPC64_ADDR24
5320 || r_type == R_PPC64_ADDR14
5321 || r_type == R_PPC64_ADDR14_BRTAKEN
5322 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5325 /* Look through the relocs for a section during the first phase, and
5326 calculate needed space in the global offset table, procedure
5327 linkage table, and dynamic reloc sections. */
5330 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5331 asection *sec, const Elf_Internal_Rela *relocs)
5333 struct ppc_link_hash_table *htab;
5334 Elf_Internal_Shdr *symtab_hdr;
5335 struct elf_link_hash_entry **sym_hashes;
5336 const Elf_Internal_Rela *rel;
5337 const Elf_Internal_Rela *rel_end;
5339 asection **opd_sym_map;
5340 struct elf_link_hash_entry *tga, *dottga;
5342 if (bfd_link_relocatable (info))
5345 /* Don't do anything special with non-loaded, non-alloced sections.
5346 In particular, any relocs in such sections should not affect GOT
5347 and PLT reference counting (ie. we don't allow them to create GOT
5348 or PLT entries), there's no possibility or desire to optimize TLS
5349 relocs, and there's not much point in propagating relocs to shared
5350 libs that the dynamic linker won't relocate. */
5351 if ((sec->flags & SEC_ALLOC) == 0)
5354 BFD_ASSERT (is_ppc64_elf (abfd));
5356 htab = ppc_hash_table (info);
5360 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5361 FALSE, FALSE, TRUE);
5362 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5363 FALSE, FALSE, TRUE);
5364 symtab_hdr = &elf_symtab_hdr (abfd);
5365 sym_hashes = elf_sym_hashes (abfd);
5368 if (ppc64_elf_section_data (sec) != NULL
5369 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5370 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5372 rel_end = relocs + sec->reloc_count;
5373 for (rel = relocs; rel < rel_end; rel++)
5375 unsigned long r_symndx;
5376 struct elf_link_hash_entry *h;
5377 enum elf_ppc64_reloc_type r_type;
5379 struct _ppc64_elf_section_data *ppc64_sec;
5380 struct plt_entry **ifunc, **plt_list;
5382 r_symndx = ELF64_R_SYM (rel->r_info);
5383 if (r_symndx < symtab_hdr->sh_info)
5387 struct ppc_link_hash_entry *eh;
5389 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5390 h = elf_follow_link (h);
5391 eh = (struct ppc_link_hash_entry *) h;
5393 /* PR15323, ref flags aren't set for references in the same
5395 h->root.non_ir_ref = 1;
5396 if (eh->is_func && eh->oh != NULL)
5397 eh->oh->elf.root.non_ir_ref = 1;
5399 if (h == htab->elf.hgot)
5400 sec->has_toc_reloc = 1;
5407 if (h->type == STT_GNU_IFUNC)
5410 ifunc = &h->plt.plist;
5415 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5420 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5422 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5423 rel->r_addend, PLT_IFUNC);
5429 r_type = ELF64_R_TYPE (rel->r_info);
5434 /* These special tls relocs tie a call to __tls_get_addr with
5435 its parameter symbol. */
5438 case R_PPC64_GOT_TLSLD16:
5439 case R_PPC64_GOT_TLSLD16_LO:
5440 case R_PPC64_GOT_TLSLD16_HI:
5441 case R_PPC64_GOT_TLSLD16_HA:
5442 tls_type = TLS_TLS | TLS_LD;
5445 case R_PPC64_GOT_TLSGD16:
5446 case R_PPC64_GOT_TLSGD16_LO:
5447 case R_PPC64_GOT_TLSGD16_HI:
5448 case R_PPC64_GOT_TLSGD16_HA:
5449 tls_type = TLS_TLS | TLS_GD;
5452 case R_PPC64_GOT_TPREL16_DS:
5453 case R_PPC64_GOT_TPREL16_LO_DS:
5454 case R_PPC64_GOT_TPREL16_HI:
5455 case R_PPC64_GOT_TPREL16_HA:
5456 if (bfd_link_pic (info))
5457 info->flags |= DF_STATIC_TLS;
5458 tls_type = TLS_TLS | TLS_TPREL;
5461 case R_PPC64_GOT_DTPREL16_DS:
5462 case R_PPC64_GOT_DTPREL16_LO_DS:
5463 case R_PPC64_GOT_DTPREL16_HI:
5464 case R_PPC64_GOT_DTPREL16_HA:
5465 tls_type = TLS_TLS | TLS_DTPREL;
5467 sec->has_tls_reloc = 1;
5471 case R_PPC64_GOT16_DS:
5472 case R_PPC64_GOT16_HA:
5473 case R_PPC64_GOT16_HI:
5474 case R_PPC64_GOT16_LO:
5475 case R_PPC64_GOT16_LO_DS:
5476 /* This symbol requires a global offset table entry. */
5477 sec->has_toc_reloc = 1;
5478 if (r_type == R_PPC64_GOT_TLSLD16
5479 || r_type == R_PPC64_GOT_TLSGD16
5480 || r_type == R_PPC64_GOT_TPREL16_DS
5481 || r_type == R_PPC64_GOT_DTPREL16_DS
5482 || r_type == R_PPC64_GOT16
5483 || r_type == R_PPC64_GOT16_DS)
5485 htab->do_multi_toc = 1;
5486 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5489 if (ppc64_elf_tdata (abfd)->got == NULL
5490 && !create_got_section (abfd, info))
5495 struct ppc_link_hash_entry *eh;
5496 struct got_entry *ent;
5498 eh = (struct ppc_link_hash_entry *) h;
5499 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5500 if (ent->addend == rel->r_addend
5501 && ent->owner == abfd
5502 && ent->tls_type == tls_type)
5506 bfd_size_type amt = sizeof (*ent);
5507 ent = bfd_alloc (abfd, amt);
5510 ent->next = eh->elf.got.glist;
5511 ent->addend = rel->r_addend;
5513 ent->tls_type = tls_type;
5514 ent->is_indirect = FALSE;
5515 ent->got.refcount = 0;
5516 eh->elf.got.glist = ent;
5518 ent->got.refcount += 1;
5519 eh->tls_mask |= tls_type;
5522 /* This is a global offset table entry for a local symbol. */
5523 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5524 rel->r_addend, tls_type))
5527 /* We may also need a plt entry if the symbol turns out to be
5529 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
5531 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5536 case R_PPC64_PLT16_HA:
5537 case R_PPC64_PLT16_HI:
5538 case R_PPC64_PLT16_LO:
5541 /* This symbol requires a procedure linkage table entry. */
5546 if (h->root.root.string[0] == '.'
5547 && h->root.root.string[1] != '\0')
5548 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5549 plt_list = &h->plt.plist;
5551 if (plt_list == NULL)
5553 /* It does not make sense to have a procedure linkage
5554 table entry for a non-ifunc local symbol. */
5555 info->callbacks->einfo
5556 /* xgettext:c-format */
5557 (_("%P: %H: %s reloc against local symbol\n"),
5558 abfd, sec, rel->r_offset,
5559 ppc64_elf_howto_table[r_type]->name);
5560 bfd_set_error (bfd_error_bad_value);
5563 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5567 /* The following relocations don't need to propagate the
5568 relocation if linking a shared object since they are
5569 section relative. */
5570 case R_PPC64_SECTOFF:
5571 case R_PPC64_SECTOFF_LO:
5572 case R_PPC64_SECTOFF_HI:
5573 case R_PPC64_SECTOFF_HA:
5574 case R_PPC64_SECTOFF_DS:
5575 case R_PPC64_SECTOFF_LO_DS:
5576 case R_PPC64_DTPREL16:
5577 case R_PPC64_DTPREL16_LO:
5578 case R_PPC64_DTPREL16_HI:
5579 case R_PPC64_DTPREL16_HA:
5580 case R_PPC64_DTPREL16_DS:
5581 case R_PPC64_DTPREL16_LO_DS:
5582 case R_PPC64_DTPREL16_HIGH:
5583 case R_PPC64_DTPREL16_HIGHA:
5584 case R_PPC64_DTPREL16_HIGHER:
5585 case R_PPC64_DTPREL16_HIGHERA:
5586 case R_PPC64_DTPREL16_HIGHEST:
5587 case R_PPC64_DTPREL16_HIGHESTA:
5592 case R_PPC64_REL16_LO:
5593 case R_PPC64_REL16_HI:
5594 case R_PPC64_REL16_HA:
5595 case R_PPC64_REL16DX_HA:
5598 /* Not supported as a dynamic relocation. */
5599 case R_PPC64_ADDR64_LOCAL:
5600 if (bfd_link_pic (info))
5602 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5604 /* xgettext:c-format */
5605 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5606 "in shared libraries and PIEs.\n"),
5607 abfd, sec, rel->r_offset,
5608 ppc64_elf_howto_table[r_type]->name);
5609 bfd_set_error (bfd_error_bad_value);
5615 case R_PPC64_TOC16_DS:
5616 htab->do_multi_toc = 1;
5617 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5619 case R_PPC64_TOC16_LO:
5620 case R_PPC64_TOC16_HI:
5621 case R_PPC64_TOC16_HA:
5622 case R_PPC64_TOC16_LO_DS:
5623 sec->has_toc_reloc = 1;
5630 /* This relocation describes the C++ object vtable hierarchy.
5631 Reconstruct it for later use during GC. */
5632 case R_PPC64_GNU_VTINHERIT:
5633 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5637 /* This relocation describes which C++ vtable entries are actually
5638 used. Record for later use during GC. */
5639 case R_PPC64_GNU_VTENTRY:
5640 BFD_ASSERT (h != NULL);
5642 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5647 case R_PPC64_REL14_BRTAKEN:
5648 case R_PPC64_REL14_BRNTAKEN:
5650 asection *dest = NULL;
5652 /* Heuristic: If jumping outside our section, chances are
5653 we are going to need a stub. */
5656 /* If the sym is weak it may be overridden later, so
5657 don't assume we know where a weak sym lives. */
5658 if (h->root.type == bfd_link_hash_defined)
5659 dest = h->root.u.def.section;
5663 Elf_Internal_Sym *isym;
5665 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5670 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5674 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5683 if (h->root.root.string[0] == '.'
5684 && h->root.root.string[1] != '\0')
5685 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5687 if (h == tga || h == dottga)
5689 sec->has_tls_reloc = 1;
5691 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5692 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5693 /* We have a new-style __tls_get_addr call with
5697 /* Mark this section as having an old-style call. */
5698 sec->has_tls_get_addr_call = 1;
5700 plt_list = &h->plt.plist;
5703 /* We may need a .plt entry if the function this reloc
5704 refers to is in a shared lib. */
5706 && !update_plt_info (abfd, plt_list, rel->r_addend))
5710 case R_PPC64_ADDR14:
5711 case R_PPC64_ADDR14_BRNTAKEN:
5712 case R_PPC64_ADDR14_BRTAKEN:
5713 case R_PPC64_ADDR24:
5716 case R_PPC64_TPREL64:
5717 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5718 if (bfd_link_pic (info))
5719 info->flags |= DF_STATIC_TLS;
5722 case R_PPC64_DTPMOD64:
5723 if (rel + 1 < rel_end
5724 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5725 && rel[1].r_offset == rel->r_offset + 8)
5726 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5728 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5731 case R_PPC64_DTPREL64:
5732 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5734 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5735 && rel[-1].r_offset == rel->r_offset - 8)
5736 /* This is the second reloc of a dtpmod, dtprel pair.
5737 Don't mark with TLS_DTPREL. */
5741 sec->has_tls_reloc = 1;
5744 struct ppc_link_hash_entry *eh;
5745 eh = (struct ppc_link_hash_entry *) h;
5746 eh->tls_mask |= tls_type;
5749 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5750 rel->r_addend, tls_type))
5753 ppc64_sec = ppc64_elf_section_data (sec);
5754 if (ppc64_sec->sec_type != sec_toc)
5758 /* One extra to simplify get_tls_mask. */
5759 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5760 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5761 if (ppc64_sec->u.toc.symndx == NULL)
5763 amt = sec->size * sizeof (bfd_vma) / 8;
5764 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5765 if (ppc64_sec->u.toc.add == NULL)
5767 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5768 ppc64_sec->sec_type = sec_toc;
5770 BFD_ASSERT (rel->r_offset % 8 == 0);
5771 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5772 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5774 /* Mark the second slot of a GD or LD entry.
5775 -1 to indicate GD and -2 to indicate LD. */
5776 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5777 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5778 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5779 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5782 case R_PPC64_TPREL16:
5783 case R_PPC64_TPREL16_LO:
5784 case R_PPC64_TPREL16_HI:
5785 case R_PPC64_TPREL16_HA:
5786 case R_PPC64_TPREL16_DS:
5787 case R_PPC64_TPREL16_LO_DS:
5788 case R_PPC64_TPREL16_HIGH:
5789 case R_PPC64_TPREL16_HIGHA:
5790 case R_PPC64_TPREL16_HIGHER:
5791 case R_PPC64_TPREL16_HIGHERA:
5792 case R_PPC64_TPREL16_HIGHEST:
5793 case R_PPC64_TPREL16_HIGHESTA:
5794 if (bfd_link_pic (info))
5796 info->flags |= DF_STATIC_TLS;
5801 case R_PPC64_ADDR64:
5802 if (opd_sym_map != NULL
5803 && rel + 1 < rel_end
5804 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5807 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5811 Elf_Internal_Sym *isym;
5813 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5818 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5819 if (s != NULL && s != sec)
5820 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
5825 case R_PPC64_ADDR16:
5826 case R_PPC64_ADDR16_DS:
5827 case R_PPC64_ADDR16_HA:
5828 case R_PPC64_ADDR16_HI:
5829 case R_PPC64_ADDR16_HIGH:
5830 case R_PPC64_ADDR16_HIGHA:
5831 case R_PPC64_ADDR16_HIGHER:
5832 case R_PPC64_ADDR16_HIGHERA:
5833 case R_PPC64_ADDR16_HIGHEST:
5834 case R_PPC64_ADDR16_HIGHESTA:
5835 case R_PPC64_ADDR16_LO:
5836 case R_PPC64_ADDR16_LO_DS:
5837 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
5838 && rel->r_addend == 0)
5840 /* We may need a .plt entry if this reloc refers to a
5841 function in a shared lib. */
5842 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5844 h->pointer_equality_needed = 1;
5851 case R_PPC64_ADDR32:
5852 case R_PPC64_UADDR16:
5853 case R_PPC64_UADDR32:
5854 case R_PPC64_UADDR64:
5856 if (h != NULL && !bfd_link_pic (info))
5857 /* We may need a copy reloc. */
5860 /* Don't propagate .opd relocs. */
5861 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5864 /* If we are creating a shared library, and this is a reloc
5865 against a global symbol, or a non PC relative reloc
5866 against a local symbol, then we need to copy the reloc
5867 into the shared library. However, if we are linking with
5868 -Bsymbolic, we do not need to copy a reloc against a
5869 global symbol which is defined in an object we are
5870 including in the link (i.e., DEF_REGULAR is set). At
5871 this point we have not seen all the input files, so it is
5872 possible that DEF_REGULAR is not set now but will be set
5873 later (it is never cleared). In case of a weak definition,
5874 DEF_REGULAR may be cleared later by a strong definition in
5875 a shared library. We account for that possibility below by
5876 storing information in the dyn_relocs field of the hash
5877 table entry. A similar situation occurs when creating
5878 shared libraries and symbol visibility changes render the
5881 If on the other hand, we are creating an executable, we
5882 may need to keep relocations for symbols satisfied by a
5883 dynamic library if we manage to avoid copy relocs for the
5886 if ((bfd_link_pic (info)
5887 && (must_be_dyn_reloc (info, r_type)
5889 && (!SYMBOLIC_BIND (info, h)
5890 || h->root.type == bfd_link_hash_defweak
5891 || !h->def_regular))))
5892 || (ELIMINATE_COPY_RELOCS
5893 && !bfd_link_pic (info)
5895 && (h->root.type == bfd_link_hash_defweak
5896 || !h->def_regular))
5897 || (!bfd_link_pic (info)
5900 /* We must copy these reloc types into the output file.
5901 Create a reloc section in dynobj and make room for
5905 sreloc = _bfd_elf_make_dynamic_reloc_section
5906 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5912 /* If this is a global symbol, we count the number of
5913 relocations we need for this symbol. */
5916 struct elf_dyn_relocs *p;
5917 struct elf_dyn_relocs **head;
5919 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5921 if (p == NULL || p->sec != sec)
5923 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5933 if (!must_be_dyn_reloc (info, r_type))
5938 /* Track dynamic relocs needed for local syms too.
5939 We really need local syms available to do this
5941 struct ppc_dyn_relocs *p;
5942 struct ppc_dyn_relocs **head;
5943 bfd_boolean is_ifunc;
5946 Elf_Internal_Sym *isym;
5948 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5953 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5957 vpp = &elf_section_data (s)->local_dynrel;
5958 head = (struct ppc_dyn_relocs **) vpp;
5959 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5961 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5963 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5965 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5971 p->ifunc = is_ifunc;
5987 /* Merge backend specific data from an object file to the output
5988 object file when linking. */
5991 ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
5993 bfd *obfd = info->output_bfd;
5994 unsigned long iflags, oflags;
5996 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5999 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
6002 if (!_bfd_generic_verify_endian_match (ibfd, info))
6005 iflags = elf_elfheader (ibfd)->e_flags;
6006 oflags = elf_elfheader (obfd)->e_flags;
6008 if (iflags & ~EF_PPC64_ABI)
6011 /* xgettext:c-format */
6012 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
6013 bfd_set_error (bfd_error_bad_value);
6016 else if (iflags != oflags && iflags != 0)
6019 /* xgettext:c-format */
6020 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6021 ibfd, iflags, oflags);
6022 bfd_set_error (bfd_error_bad_value);
6026 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
6028 /* Merge Tag_compatibility attributes and any common GNU ones. */
6029 _bfd_elf_merge_object_attributes (ibfd, info);
6035 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6037 /* Print normal ELF private data. */
6038 _bfd_elf_print_private_bfd_data (abfd, ptr);
6040 if (elf_elfheader (abfd)->e_flags != 0)
6044 fprintf (file, _("private flags = 0x%lx:"),
6045 elf_elfheader (abfd)->e_flags);
6047 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6048 fprintf (file, _(" [abiv%ld]"),
6049 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6056 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
6057 of the code entry point, and its section, which must be in the same
6058 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
6061 opd_entry_value (asection *opd_sec,
6063 asection **code_sec,
6065 bfd_boolean in_code_sec)
6067 bfd *opd_bfd = opd_sec->owner;
6068 Elf_Internal_Rela *relocs;
6069 Elf_Internal_Rela *lo, *hi, *look;
6072 /* No relocs implies we are linking a --just-symbols object, or looking
6073 at a final linked executable with addr2line or somesuch. */
6074 if (opd_sec->reloc_count == 0)
6076 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
6078 if (contents == NULL)
6080 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6081 return (bfd_vma) -1;
6082 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6085 /* PR 17512: file: 64b9dfbb. */
6086 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
6087 return (bfd_vma) -1;
6089 val = bfd_get_64 (opd_bfd, contents + offset);
6090 if (code_sec != NULL)
6092 asection *sec, *likely = NULL;
6098 && val < sec->vma + sec->size)
6104 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6106 && (sec->flags & SEC_LOAD) != 0
6107 && (sec->flags & SEC_ALLOC) != 0)
6112 if (code_off != NULL)
6113 *code_off = val - likely->vma;
6119 BFD_ASSERT (is_ppc64_elf (opd_bfd));
6121 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
6123 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
6124 /* PR 17512: file: df8e1fd6. */
6126 return (bfd_vma) -1;
6128 /* Go find the opd reloc at the sym address. */
6130 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
6134 look = lo + (hi - lo) / 2;
6135 if (look->r_offset < offset)
6137 else if (look->r_offset > offset)
6141 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6143 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6144 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6146 unsigned long symndx = ELF64_R_SYM (look->r_info);
6147 asection *sec = NULL;
6149 if (symndx >= symtab_hdr->sh_info
6150 && elf_sym_hashes (opd_bfd) != NULL)
6152 struct elf_link_hash_entry **sym_hashes;
6153 struct elf_link_hash_entry *rh;
6155 sym_hashes = elf_sym_hashes (opd_bfd);
6156 rh = sym_hashes[symndx - symtab_hdr->sh_info];
6159 rh = elf_follow_link (rh);
6160 if (rh->root.type != bfd_link_hash_defined
6161 && rh->root.type != bfd_link_hash_defweak)
6163 if (rh->root.u.def.section->owner == opd_bfd)
6165 val = rh->root.u.def.value;
6166 sec = rh->root.u.def.section;
6173 Elf_Internal_Sym *sym;
6175 if (symndx < symtab_hdr->sh_info)
6177 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6180 size_t symcnt = symtab_hdr->sh_info;
6181 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6186 symtab_hdr->contents = (bfd_byte *) sym;
6192 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6198 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6201 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6202 val = sym->st_value;
6205 val += look->r_addend;
6206 if (code_off != NULL)
6208 if (code_sec != NULL)
6210 if (in_code_sec && *code_sec != sec)
6215 if (sec->output_section != NULL)
6216 val += sec->output_section->vma + sec->output_offset;
6225 /* If the ELF symbol SYM might be a function in SEC, return the
6226 function size and set *CODE_OFF to the function's entry point,
6227 otherwise return zero. */
6229 static bfd_size_type
6230 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6235 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6236 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6240 if (!(sym->flags & BSF_SYNTHETIC))
6241 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6243 if (strcmp (sym->section->name, ".opd") == 0)
6245 struct _opd_sec_data *opd = get_opd_info (sym->section);
6246 bfd_vma symval = sym->value;
6249 && opd->adjust != NULL
6250 && elf_section_data (sym->section)->relocs != NULL)
6252 /* opd_entry_value will use cached relocs that have been
6253 adjusted, but with raw symbols. That means both local
6254 and global symbols need adjusting. */
6255 long adjust = opd->adjust[OPD_NDX (symval)];
6261 if (opd_entry_value (sym->section, symval,
6262 &sec, code_off, TRUE) == (bfd_vma) -1)
6264 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6265 symbol. This size has nothing to do with the code size of the
6266 function, which is what we're supposed to return, but the
6267 code size isn't available without looking up the dot-sym.
6268 However, doing that would be a waste of time particularly
6269 since elf_find_function will look at the dot-sym anyway.
6270 Now, elf_find_function will keep the largest size of any
6271 function sym found at the code address of interest, so return
6272 1 here to avoid it incorrectly caching a larger function size
6273 for a small function. This does mean we return the wrong
6274 size for a new-ABI function of size 24, but all that does is
6275 disable caching for such functions. */
6281 if (sym->section != sec)
6283 *code_off = sym->value;
6290 /* Return true if symbol is defined in a regular object file. */
6293 is_static_defined (struct elf_link_hash_entry *h)
6295 return ((h->root.type == bfd_link_hash_defined
6296 || h->root.type == bfd_link_hash_defweak)
6297 && h->root.u.def.section != NULL
6298 && h->root.u.def.section->output_section != NULL);
6301 /* If FDH is a function descriptor symbol, return the associated code
6302 entry symbol if it is defined. Return NULL otherwise. */
6304 static struct ppc_link_hash_entry *
6305 defined_code_entry (struct ppc_link_hash_entry *fdh)
6307 if (fdh->is_func_descriptor)
6309 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6310 if (fh->elf.root.type == bfd_link_hash_defined
6311 || fh->elf.root.type == bfd_link_hash_defweak)
6317 /* If FH is a function code entry symbol, return the associated
6318 function descriptor symbol if it is defined. Return NULL otherwise. */
6320 static struct ppc_link_hash_entry *
6321 defined_func_desc (struct ppc_link_hash_entry *fh)
6324 && fh->oh->is_func_descriptor)
6326 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6327 if (fdh->elf.root.type == bfd_link_hash_defined
6328 || fdh->elf.root.type == bfd_link_hash_defweak)
6334 static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *);
6336 /* Garbage collect sections, after first dealing with dot-symbols. */
6339 ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info)
6341 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6343 if (htab != NULL && htab->need_func_desc_adj)
6345 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6346 htab->need_func_desc_adj = 0;
6348 return bfd_elf_gc_sections (abfd, info);
6351 /* Mark all our entry sym sections, both opd and code section. */
6354 ppc64_elf_gc_keep (struct bfd_link_info *info)
6356 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6357 struct bfd_sym_chain *sym;
6362 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6364 struct ppc_link_hash_entry *eh, *fh;
6367 eh = (struct ppc_link_hash_entry *)
6368 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6371 if (eh->elf.root.type != bfd_link_hash_defined
6372 && eh->elf.root.type != bfd_link_hash_defweak)
6375 fh = defined_code_entry (eh);
6378 sec = fh->elf.root.u.def.section;
6379 sec->flags |= SEC_KEEP;
6381 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6382 && opd_entry_value (eh->elf.root.u.def.section,
6383 eh->elf.root.u.def.value,
6384 &sec, NULL, FALSE) != (bfd_vma) -1)
6385 sec->flags |= SEC_KEEP;
6387 sec = eh->elf.root.u.def.section;
6388 sec->flags |= SEC_KEEP;
6392 /* Mark sections containing dynamically referenced symbols. When
6393 building shared libraries, we must assume that any visible symbol is
6397 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6399 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6400 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6401 struct ppc_link_hash_entry *fdh;
6402 struct bfd_elf_dynamic_list *d = info->dynamic_list;
6404 /* Dynamic linking info is on the func descriptor sym. */
6405 fdh = defined_func_desc (eh);
6409 if ((eh->elf.root.type == bfd_link_hash_defined
6410 || eh->elf.root.type == bfd_link_hash_defweak)
6411 && (eh->elf.ref_dynamic
6412 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
6413 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6414 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6415 && (!bfd_link_executable (info)
6416 || info->gc_keep_exported
6417 || info->export_dynamic
6420 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
6421 && (eh->elf.versioned >= versioned
6422 || !bfd_hide_sym_by_version (info->version_info,
6423 eh->elf.root.root.string)))))
6426 struct ppc_link_hash_entry *fh;
6428 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6430 /* Function descriptor syms cause the associated
6431 function code sym section to be marked. */
6432 fh = defined_code_entry (eh);
6435 code_sec = fh->elf.root.u.def.section;
6436 code_sec->flags |= SEC_KEEP;
6438 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6439 && opd_entry_value (eh->elf.root.u.def.section,
6440 eh->elf.root.u.def.value,
6441 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6442 code_sec->flags |= SEC_KEEP;
6448 /* Return the section that should be marked against GC for a given
6452 ppc64_elf_gc_mark_hook (asection *sec,
6453 struct bfd_link_info *info,
6454 Elf_Internal_Rela *rel,
6455 struct elf_link_hash_entry *h,
6456 Elf_Internal_Sym *sym)
6460 /* Syms return NULL if we're marking .opd, so we avoid marking all
6461 function sections, as all functions are referenced in .opd. */
6463 if (get_opd_info (sec) != NULL)
6468 enum elf_ppc64_reloc_type r_type;
6469 struct ppc_link_hash_entry *eh, *fh, *fdh;
6471 r_type = ELF64_R_TYPE (rel->r_info);
6474 case R_PPC64_GNU_VTINHERIT:
6475 case R_PPC64_GNU_VTENTRY:
6479 switch (h->root.type)
6481 case bfd_link_hash_defined:
6482 case bfd_link_hash_defweak:
6483 eh = (struct ppc_link_hash_entry *) h;
6484 fdh = defined_func_desc (eh);
6487 /* -mcall-aixdesc code references the dot-symbol on
6488 a call reloc. Mark the function descriptor too
6489 against garbage collection. */
6491 if (fdh->elf.u.weakdef != NULL)
6492 fdh->elf.u.weakdef->mark = 1;
6496 /* Function descriptor syms cause the associated
6497 function code sym section to be marked. */
6498 fh = defined_code_entry (eh);
6501 /* They also mark their opd section. */
6502 eh->elf.root.u.def.section->gc_mark = 1;
6504 rsec = fh->elf.root.u.def.section;
6506 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6507 && opd_entry_value (eh->elf.root.u.def.section,
6508 eh->elf.root.u.def.value,
6509 &rsec, NULL, FALSE) != (bfd_vma) -1)
6510 eh->elf.root.u.def.section->gc_mark = 1;
6512 rsec = h->root.u.def.section;
6515 case bfd_link_hash_common:
6516 rsec = h->root.u.c.p->section;
6520 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6526 struct _opd_sec_data *opd;
6528 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6529 opd = get_opd_info (rsec);
6530 if (opd != NULL && opd->func_sec != NULL)
6534 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
6541 /* Update the .got, .plt. and dynamic reloc reference counts for the
6542 section being removed. */
6545 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6546 asection *sec, const Elf_Internal_Rela *relocs)
6548 struct ppc_link_hash_table *htab;
6549 Elf_Internal_Shdr *symtab_hdr;
6550 struct elf_link_hash_entry **sym_hashes;
6551 struct got_entry **local_got_ents;
6552 const Elf_Internal_Rela *rel, *relend;
6554 if (bfd_link_relocatable (info))
6557 if ((sec->flags & SEC_ALLOC) == 0)
6560 elf_section_data (sec)->local_dynrel = NULL;
6562 htab = ppc_hash_table (info);
6566 symtab_hdr = &elf_symtab_hdr (abfd);
6567 sym_hashes = elf_sym_hashes (abfd);
6568 local_got_ents = elf_local_got_ents (abfd);
6570 relend = relocs + sec->reloc_count;
6571 for (rel = relocs; rel < relend; rel++)
6573 unsigned long r_symndx;
6574 enum elf_ppc64_reloc_type r_type;
6575 struct elf_link_hash_entry *h = NULL;
6576 struct plt_entry **plt_list;
6577 unsigned char tls_type = 0;
6579 r_symndx = ELF64_R_SYM (rel->r_info);
6580 r_type = ELF64_R_TYPE (rel->r_info);
6581 if (r_symndx >= symtab_hdr->sh_info)
6583 struct ppc_link_hash_entry *eh;
6584 struct elf_dyn_relocs **pp;
6585 struct elf_dyn_relocs *p;
6587 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6588 h = elf_follow_link (h);
6589 eh = (struct ppc_link_hash_entry *) h;
6591 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6594 /* Everything must go for SEC. */
6602 case R_PPC64_GOT_TLSLD16:
6603 case R_PPC64_GOT_TLSLD16_LO:
6604 case R_PPC64_GOT_TLSLD16_HI:
6605 case R_PPC64_GOT_TLSLD16_HA:
6606 tls_type = TLS_TLS | TLS_LD;
6609 case R_PPC64_GOT_TLSGD16:
6610 case R_PPC64_GOT_TLSGD16_LO:
6611 case R_PPC64_GOT_TLSGD16_HI:
6612 case R_PPC64_GOT_TLSGD16_HA:
6613 tls_type = TLS_TLS | TLS_GD;
6616 case R_PPC64_GOT_TPREL16_DS:
6617 case R_PPC64_GOT_TPREL16_LO_DS:
6618 case R_PPC64_GOT_TPREL16_HI:
6619 case R_PPC64_GOT_TPREL16_HA:
6620 tls_type = TLS_TLS | TLS_TPREL;
6623 case R_PPC64_GOT_DTPREL16_DS:
6624 case R_PPC64_GOT_DTPREL16_LO_DS:
6625 case R_PPC64_GOT_DTPREL16_HI:
6626 case R_PPC64_GOT_DTPREL16_HA:
6627 tls_type = TLS_TLS | TLS_DTPREL;
6631 case R_PPC64_GOT16_DS:
6632 case R_PPC64_GOT16_HA:
6633 case R_PPC64_GOT16_HI:
6634 case R_PPC64_GOT16_LO:
6635 case R_PPC64_GOT16_LO_DS:
6638 struct got_entry *ent;
6643 ent = local_got_ents[r_symndx];
6645 for (; ent != NULL; ent = ent->next)
6646 if (ent->addend == rel->r_addend
6647 && ent->owner == abfd
6648 && ent->tls_type == tls_type)
6652 if (ent->got.refcount > 0)
6653 ent->got.refcount -= 1;
6657 case R_PPC64_PLT16_HA:
6658 case R_PPC64_PLT16_HI:
6659 case R_PPC64_PLT16_LO:
6663 case R_PPC64_REL14_BRNTAKEN:
6664 case R_PPC64_REL14_BRTAKEN:
6668 plt_list = &h->plt.plist;
6669 else if (local_got_ents != NULL)
6671 struct plt_entry **local_plt = (struct plt_entry **)
6672 (local_got_ents + symtab_hdr->sh_info);
6673 unsigned char *local_got_tls_masks = (unsigned char *)
6674 (local_plt + symtab_hdr->sh_info);
6675 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6676 plt_list = local_plt + r_symndx;
6680 struct plt_entry *ent;
6682 for (ent = *plt_list; ent != NULL; ent = ent->next)
6683 if (ent->addend == rel->r_addend)
6685 if (ent != NULL && ent->plt.refcount > 0)
6686 ent->plt.refcount -= 1;
6697 /* The maximum size of .sfpr. */
6698 #define SFPR_MAX (218*4)
6700 struct sfpr_def_parms
6702 const char name[12];
6703 unsigned char lo, hi;
6704 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6705 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6708 /* Auto-generate _save*, _rest* functions in .sfpr.
6709 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6713 sfpr_define (struct bfd_link_info *info,
6714 const struct sfpr_def_parms *parm,
6717 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6719 size_t len = strlen (parm->name);
6720 bfd_boolean writing = FALSE;
6726 memcpy (sym, parm->name, len);
6729 for (i = parm->lo; i <= parm->hi; i++)
6731 struct ppc_link_hash_entry *h;
6733 sym[len + 0] = i / 10 + '0';
6734 sym[len + 1] = i % 10 + '0';
6735 h = (struct ppc_link_hash_entry *)
6736 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
6737 if (stub_sec != NULL)
6740 && h->elf.root.type == bfd_link_hash_defined
6741 && h->elf.root.u.def.section == htab->sfpr)
6743 struct elf_link_hash_entry *s;
6745 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6746 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6749 if (s->root.type == bfd_link_hash_new
6750 || (s->root.type = bfd_link_hash_defined
6751 && s->root.u.def.section == stub_sec))
6753 s->root.type = bfd_link_hash_defined;
6754 s->root.u.def.section = stub_sec;
6755 s->root.u.def.value = (stub_sec->size
6756 + h->elf.root.u.def.value);
6759 s->ref_regular_nonweak = 1;
6760 s->forced_local = 1;
6762 s->root.linker_def = 1;
6770 if (!h->elf.def_regular)
6772 h->elf.root.type = bfd_link_hash_defined;
6773 h->elf.root.u.def.section = htab->sfpr;
6774 h->elf.root.u.def.value = htab->sfpr->size;
6775 h->elf.type = STT_FUNC;
6776 h->elf.def_regular = 1;
6778 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6780 if (htab->sfpr->contents == NULL)
6782 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6783 if (htab->sfpr->contents == NULL)
6790 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6792 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6794 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6795 htab->sfpr->size = p - htab->sfpr->contents;
6803 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6805 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6810 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6812 p = savegpr0 (abfd, p, r);
6813 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6815 bfd_put_32 (abfd, BLR, p);
6820 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6822 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6827 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6829 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6831 p = restgpr0 (abfd, p, r);
6832 bfd_put_32 (abfd, MTLR_R0, p);
6836 p = restgpr0 (abfd, p, 30);
6837 p = restgpr0 (abfd, p, 31);
6839 bfd_put_32 (abfd, BLR, p);
6844 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6846 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6851 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6853 p = savegpr1 (abfd, p, r);
6854 bfd_put_32 (abfd, BLR, p);
6859 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6861 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6866 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6868 p = restgpr1 (abfd, p, r);
6869 bfd_put_32 (abfd, BLR, p);
6874 savefpr (bfd *abfd, bfd_byte *p, int r)
6876 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6881 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6883 p = savefpr (abfd, p, r);
6884 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6886 bfd_put_32 (abfd, BLR, p);
6891 restfpr (bfd *abfd, bfd_byte *p, int r)
6893 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6898 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6900 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6902 p = restfpr (abfd, p, r);
6903 bfd_put_32 (abfd, MTLR_R0, p);
6907 p = restfpr (abfd, p, 30);
6908 p = restfpr (abfd, p, 31);
6910 bfd_put_32 (abfd, BLR, p);
6915 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6917 p = savefpr (abfd, p, r);
6918 bfd_put_32 (abfd, BLR, p);
6923 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6925 p = restfpr (abfd, p, r);
6926 bfd_put_32 (abfd, BLR, p);
6931 savevr (bfd *abfd, bfd_byte *p, int r)
6933 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6935 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6940 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6942 p = savevr (abfd, p, r);
6943 bfd_put_32 (abfd, BLR, p);
6948 restvr (bfd *abfd, bfd_byte *p, int r)
6950 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6952 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6957 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6959 p = restvr (abfd, p, r);
6960 bfd_put_32 (abfd, BLR, p);
6964 /* Called via elf_link_hash_traverse to transfer dynamic linking
6965 information on function code symbol entries to their corresponding
6966 function descriptor symbol entries. */
6969 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6971 struct bfd_link_info *info;
6972 struct ppc_link_hash_table *htab;
6973 struct ppc_link_hash_entry *fh;
6974 struct ppc_link_hash_entry *fdh;
6975 bfd_boolean force_local;
6977 fh = (struct ppc_link_hash_entry *) h;
6978 if (fh->elf.root.type == bfd_link_hash_indirect)
6984 if (fh->elf.root.root.string[0] != '.'
6985 || fh->elf.root.root.string[1] == '\0')
6989 htab = ppc_hash_table (info);
6993 /* Find the corresponding function descriptor symbol. */
6994 fdh = lookup_fdh (fh, htab);
6996 /* Resolve undefined references to dot-symbols as the value
6997 in the function descriptor, if we have one in a regular object.
6998 This is to satisfy cases like ".quad .foo". Calls to functions
6999 in dynamic objects are handled elsewhere. */
7000 if ((fh->elf.root.type == bfd_link_hash_undefined
7001 || fh->elf.root.type == bfd_link_hash_undefweak)
7002 && (fdh->elf.root.type == bfd_link_hash_defined
7003 || fdh->elf.root.type == bfd_link_hash_defweak)
7004 && get_opd_info (fdh->elf.root.u.def.section) != NULL
7005 && opd_entry_value (fdh->elf.root.u.def.section,
7006 fdh->elf.root.u.def.value,
7007 &fh->elf.root.u.def.section,
7008 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
7010 fh->elf.root.type = fdh->elf.root.type;
7011 fh->elf.forced_local = 1;
7012 fh->elf.def_regular = fdh->elf.def_regular;
7013 fh->elf.def_dynamic = fdh->elf.def_dynamic;
7016 if (!fh->elf.dynamic)
7018 struct plt_entry *ent;
7020 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
7021 if (ent->plt.refcount > 0)
7027 /* Create a descriptor as undefined if necessary. */
7029 && !bfd_link_executable (info)
7030 && (fh->elf.root.type == bfd_link_hash_undefined
7031 || fh->elf.root.type == bfd_link_hash_undefweak))
7033 fdh = make_fdh (info, fh);
7038 /* We can't support overriding of symbols on a fake descriptor. */
7041 && (fh->elf.root.type == bfd_link_hash_defined
7042 || fh->elf.root.type == bfd_link_hash_defweak))
7043 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
7045 /* Transfer dynamic linking information to the function descriptor. */
7048 fdh->elf.ref_regular |= fh->elf.ref_regular;
7049 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
7050 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
7051 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
7052 fdh->elf.dynamic |= fh->elf.dynamic;
7053 fdh->elf.needs_plt |= (fh->elf.needs_plt
7054 || fh->elf.type == STT_FUNC
7055 || fh->elf.type == STT_GNU_IFUNC);
7056 move_plt_plist (fh, fdh);
7058 if (!fdh->elf.forced_local
7059 && fh->elf.dynindx != -1)
7060 if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
7064 /* Now that the info is on the function descriptor, clear the
7065 function code sym info. Any function code syms for which we
7066 don't have a definition in a regular file, we force local.
7067 This prevents a shared library from exporting syms that have
7068 been imported from another library. Function code syms that
7069 are really in the library we must leave global to prevent the
7070 linker dragging in a definition from a static library. */
7071 force_local = (!fh->elf.def_regular
7073 || !fdh->elf.def_regular
7074 || fdh->elf.forced_local);
7075 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7080 static const struct sfpr_def_parms save_res_funcs[] =
7082 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7083 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7084 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7085 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7086 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7087 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7088 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7089 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7090 { "._savef", 14, 31, savefpr, savefpr1_tail },
7091 { "._restf", 14, 31, restfpr, restfpr1_tail },
7092 { "_savevr_", 20, 31, savevr, savevr_tail },
7093 { "_restvr_", 20, 31, restvr, restvr_tail }
7096 /* Called near the start of bfd_elf_size_dynamic_sections. We use
7097 this hook to a) provide some gcc support functions, and b) transfer
7098 dynamic linking information gathered so far on function code symbol
7099 entries, to their corresponding function descriptor symbol entries. */
7102 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7103 struct bfd_link_info *info)
7105 struct ppc_link_hash_table *htab;
7107 htab = ppc_hash_table (info);
7111 /* Provide any missing _save* and _rest* functions. */
7112 if (htab->sfpr != NULL)
7116 htab->sfpr->size = 0;
7117 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7118 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7120 if (htab->sfpr->size == 0)
7121 htab->sfpr->flags |= SEC_EXCLUDE;
7124 if (bfd_link_relocatable (info))
7127 if (htab->elf.hgot != NULL)
7129 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7130 /* Make .TOC. defined so as to prevent it being made dynamic.
7131 The wrong value here is fixed later in ppc64_elf_set_toc. */
7132 if (!htab->elf.hgot->def_regular
7133 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7135 htab->elf.hgot->root.type = bfd_link_hash_defined;
7136 htab->elf.hgot->root.u.def.value = 0;
7137 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7138 htab->elf.hgot->def_regular = 1;
7139 htab->elf.hgot->root.linker_def = 1;
7141 htab->elf.hgot->type = STT_OBJECT;
7142 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7146 if (htab->need_func_desc_adj)
7148 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
7149 htab->need_func_desc_adj = 0;
7155 /* Return true if we have dynamic relocs against H that apply to
7156 read-only sections. */
7159 readonly_dynrelocs (struct elf_link_hash_entry *h)
7161 struct ppc_link_hash_entry *eh;
7162 struct elf_dyn_relocs *p;
7164 eh = (struct ppc_link_hash_entry *) h;
7165 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7167 asection *s = p->sec->output_section;
7169 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7175 /* Return true if we have dynamic relocs against H or any of its weak
7176 aliases, that apply to read-only sections. */
7179 alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
7181 struct ppc_link_hash_entry *eh;
7183 eh = (struct ppc_link_hash_entry *) h;
7186 if (readonly_dynrelocs (&eh->elf))
7189 } while (eh != NULL && &eh->elf != h);
7194 /* Return whether EH has pc-relative dynamic relocs. */
7197 pc_dynrelocs (struct ppc_link_hash_entry *eh)
7199 struct elf_dyn_relocs *p;
7201 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7202 if (p->pc_count != 0)
7207 /* Return true if a global entry stub will be created for H. Valid
7208 for ELFv2 before plt entries have been allocated. */
7211 global_entry_stub (struct elf_link_hash_entry *h)
7213 struct plt_entry *pent;
7215 if (!h->pointer_equality_needed
7219 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7220 if (pent->plt.refcount > 0
7221 && pent->addend == 0)
7227 /* Adjust a symbol defined by a dynamic object and referenced by a
7228 regular object. The current definition is in some section of the
7229 dynamic object, but we're not including those sections. We have to
7230 change the definition to something the rest of the link can
7234 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7235 struct elf_link_hash_entry *h)
7237 struct ppc_link_hash_table *htab;
7240 htab = ppc_hash_table (info);
7244 /* Deal with function syms. */
7245 if (h->type == STT_FUNC
7246 || h->type == STT_GNU_IFUNC
7249 /* Clear procedure linkage table information for any symbol that
7250 won't need a .plt entry. */
7251 struct plt_entry *ent;
7252 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7253 if (ent->plt.refcount > 0)
7256 || (h->type != STT_GNU_IFUNC
7257 && (SYMBOL_CALLS_LOCAL (info, h)
7258 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7259 && h->root.type == bfd_link_hash_undefweak)))
7260 || ((struct ppc_link_hash_entry *) h)->save_res)
7262 h->plt.plist = NULL;
7264 h->pointer_equality_needed = 0;
7266 else if (abiversion (info->output_bfd) >= 2)
7268 /* Taking a function's address in a read/write section
7269 doesn't require us to define the function symbol in the
7270 executable on a global entry stub. A dynamic reloc can
7271 be used instead. The reason we prefer a few more dynamic
7272 relocs is that calling via a global entry stub costs a
7273 few more instructions, and pointer_equality_needed causes
7274 extra work in ld.so when resolving these symbols. */
7275 if (global_entry_stub (h)
7276 && !alias_readonly_dynrelocs (h))
7278 h->pointer_equality_needed = 0;
7279 /* After adjust_dynamic_symbol, non_got_ref set in
7280 the non-pic case means that dyn_relocs for this
7281 symbol should be discarded. */
7285 /* If making a plt entry, then we don't need copy relocs. */
7290 h->plt.plist = NULL;
7292 /* If this is a weak symbol, and there is a real definition, the
7293 processor independent code will have arranged for us to see the
7294 real definition first, and we can just use the same value. */
7295 if (h->u.weakdef != NULL)
7297 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7298 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7299 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7300 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7301 if (ELIMINATE_COPY_RELOCS)
7302 h->non_got_ref = h->u.weakdef->non_got_ref;
7306 /* If we are creating a shared library, we must presume that the
7307 only references to the symbol are via the global offset table.
7308 For such cases we need not do anything here; the relocations will
7309 be handled correctly by relocate_section. */
7310 if (bfd_link_pic (info))
7313 /* If there are no references to this symbol that do not use the
7314 GOT, we don't need to generate a copy reloc. */
7315 if (!h->non_got_ref)
7318 /* Don't generate a copy reloc for symbols defined in the executable. */
7319 if (!h->def_dynamic || !h->ref_regular || h->def_regular
7321 /* If -z nocopyreloc was given, don't generate them either. */
7322 || info->nocopyreloc
7324 /* If we didn't find any dynamic relocs in read-only sections, then
7325 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7326 || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
7328 /* Protected variables do not work with .dynbss. The copy in
7329 .dynbss won't be used by the shared library with the protected
7330 definition for the variable. Text relocations are preferable
7331 to an incorrect program. */
7332 || h->protected_def)
7338 if (h->plt.plist != NULL)
7340 /* We should never get here, but unfortunately there are versions
7341 of gcc out there that improperly (for this ABI) put initialized
7342 function pointers, vtable refs and suchlike in read-only
7343 sections. Allow them to proceed, but warn that this might
7344 break at runtime. */
7345 info->callbacks->einfo
7346 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7347 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7348 h->root.root.string);
7351 /* This is a reference to a symbol defined by a dynamic object which
7352 is not a function. */
7354 /* We must allocate the symbol in our .dynbss section, which will
7355 become part of the .bss section of the executable. There will be
7356 an entry for this symbol in the .dynsym section. The dynamic
7357 object will contain position independent code, so all references
7358 from the dynamic object to this symbol will go through the global
7359 offset table. The dynamic linker will use the .dynsym entry to
7360 determine the address it must put in the global offset table, so
7361 both the dynamic object and the regular object will refer to the
7362 same memory location for the variable. */
7364 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7365 to copy the initial value out of the dynamic object and into the
7366 runtime process image. We need to remember the offset into the
7367 .rela.bss section we are going to use. */
7368 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7370 s = htab->elf.sdynrelro;
7371 srel = htab->elf.sreldynrelro;
7375 s = htab->elf.sdynbss;
7376 srel = htab->elf.srelbss;
7378 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7380 srel->size += sizeof (Elf64_External_Rela);
7384 return _bfd_elf_adjust_dynamic_copy (info, h, s);
7387 /* If given a function descriptor symbol, hide both the function code
7388 sym and the descriptor. */
7390 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7391 struct elf_link_hash_entry *h,
7392 bfd_boolean force_local)
7394 struct ppc_link_hash_entry *eh;
7395 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7397 eh = (struct ppc_link_hash_entry *) h;
7398 if (eh->is_func_descriptor)
7400 struct ppc_link_hash_entry *fh = eh->oh;
7405 struct elf_link_hash_table *htab = elf_hash_table (info);
7408 /* We aren't supposed to use alloca in BFD because on
7409 systems which do not have alloca the version in libiberty
7410 calls xmalloc, which might cause the program to crash
7411 when it runs out of memory. This function doesn't have a
7412 return status, so there's no way to gracefully return an
7413 error. So cheat. We know that string[-1] can be safely
7414 accessed; It's either a string in an ELF string table,
7415 or allocated in an objalloc structure. */
7417 p = eh->elf.root.root.string - 1;
7420 fh = (struct ppc_link_hash_entry *)
7421 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7424 /* Unfortunately, if it so happens that the string we were
7425 looking for was allocated immediately before this string,
7426 then we overwrote the string terminator. That's the only
7427 reason the lookup should fail. */
7430 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7431 while (q >= eh->elf.root.root.string && *q == *p)
7433 if (q < eh->elf.root.root.string && *p == '.')
7434 fh = (struct ppc_link_hash_entry *)
7435 elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE);
7444 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7449 get_sym_h (struct elf_link_hash_entry **hp,
7450 Elf_Internal_Sym **symp,
7452 unsigned char **tls_maskp,
7453 Elf_Internal_Sym **locsymsp,
7454 unsigned long r_symndx,
7457 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7459 if (r_symndx >= symtab_hdr->sh_info)
7461 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7462 struct elf_link_hash_entry *h;
7464 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7465 h = elf_follow_link (h);
7473 if (symsecp != NULL)
7475 asection *symsec = NULL;
7476 if (h->root.type == bfd_link_hash_defined
7477 || h->root.type == bfd_link_hash_defweak)
7478 symsec = h->root.u.def.section;
7482 if (tls_maskp != NULL)
7484 struct ppc_link_hash_entry *eh;
7486 eh = (struct ppc_link_hash_entry *) h;
7487 *tls_maskp = &eh->tls_mask;
7492 Elf_Internal_Sym *sym;
7493 Elf_Internal_Sym *locsyms = *locsymsp;
7495 if (locsyms == NULL)
7497 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7498 if (locsyms == NULL)
7499 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7500 symtab_hdr->sh_info,
7501 0, NULL, NULL, NULL);
7502 if (locsyms == NULL)
7504 *locsymsp = locsyms;
7506 sym = locsyms + r_symndx;
7514 if (symsecp != NULL)
7515 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7517 if (tls_maskp != NULL)
7519 struct got_entry **lgot_ents;
7520 unsigned char *tls_mask;
7523 lgot_ents = elf_local_got_ents (ibfd);
7524 if (lgot_ents != NULL)
7526 struct plt_entry **local_plt = (struct plt_entry **)
7527 (lgot_ents + symtab_hdr->sh_info);
7528 unsigned char *lgot_masks = (unsigned char *)
7529 (local_plt + symtab_hdr->sh_info);
7530 tls_mask = &lgot_masks[r_symndx];
7532 *tls_maskp = tls_mask;
7538 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7539 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7540 type suitable for optimization, and 1 otherwise. */
7543 get_tls_mask (unsigned char **tls_maskp,
7544 unsigned long *toc_symndx,
7545 bfd_vma *toc_addend,
7546 Elf_Internal_Sym **locsymsp,
7547 const Elf_Internal_Rela *rel,
7550 unsigned long r_symndx;
7552 struct elf_link_hash_entry *h;
7553 Elf_Internal_Sym *sym;
7557 r_symndx = ELF64_R_SYM (rel->r_info);
7558 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7561 if ((*tls_maskp != NULL && **tls_maskp != 0)
7563 || ppc64_elf_section_data (sec) == NULL
7564 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7567 /* Look inside a TOC section too. */
7570 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7571 off = h->root.u.def.value;
7574 off = sym->st_value;
7575 off += rel->r_addend;
7576 BFD_ASSERT (off % 8 == 0);
7577 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7578 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7579 if (toc_symndx != NULL)
7580 *toc_symndx = r_symndx;
7581 if (toc_addend != NULL)
7582 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7583 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7585 if ((h == NULL || is_static_defined (h))
7586 && (next_r == -1 || next_r == -2))
7591 /* Find (or create) an entry in the tocsave hash table. */
7593 static struct tocsave_entry *
7594 tocsave_find (struct ppc_link_hash_table *htab,
7595 enum insert_option insert,
7596 Elf_Internal_Sym **local_syms,
7597 const Elf_Internal_Rela *irela,
7600 unsigned long r_indx;
7601 struct elf_link_hash_entry *h;
7602 Elf_Internal_Sym *sym;
7603 struct tocsave_entry ent, *p;
7605 struct tocsave_entry **slot;
7607 r_indx = ELF64_R_SYM (irela->r_info);
7608 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7610 if (ent.sec == NULL || ent.sec->output_section == NULL)
7613 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7618 ent.offset = h->root.u.def.value;
7620 ent.offset = sym->st_value;
7621 ent.offset += irela->r_addend;
7623 hash = tocsave_htab_hash (&ent);
7624 slot = ((struct tocsave_entry **)
7625 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7631 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7640 /* Adjust all global syms defined in opd sections. In gcc generated
7641 code for the old ABI, these will already have been done. */
7644 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7646 struct ppc_link_hash_entry *eh;
7648 struct _opd_sec_data *opd;
7650 if (h->root.type == bfd_link_hash_indirect)
7653 if (h->root.type != bfd_link_hash_defined
7654 && h->root.type != bfd_link_hash_defweak)
7657 eh = (struct ppc_link_hash_entry *) h;
7658 if (eh->adjust_done)
7661 sym_sec = eh->elf.root.u.def.section;
7662 opd = get_opd_info (sym_sec);
7663 if (opd != NULL && opd->adjust != NULL)
7665 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
7668 /* This entry has been deleted. */
7669 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7672 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7673 if (discarded_section (dsec))
7675 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7679 eh->elf.root.u.def.value = 0;
7680 eh->elf.root.u.def.section = dsec;
7683 eh->elf.root.u.def.value += adjust;
7684 eh->adjust_done = 1;
7689 /* Handles decrementing dynamic reloc counts for the reloc specified by
7690 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7691 have already been determined. */
7694 dec_dynrel_count (bfd_vma r_info,
7696 struct bfd_link_info *info,
7697 Elf_Internal_Sym **local_syms,
7698 struct elf_link_hash_entry *h,
7699 Elf_Internal_Sym *sym)
7701 enum elf_ppc64_reloc_type r_type;
7702 asection *sym_sec = NULL;
7704 /* Can this reloc be dynamic? This switch, and later tests here
7705 should be kept in sync with the code in check_relocs. */
7706 r_type = ELF64_R_TYPE (r_info);
7712 case R_PPC64_TPREL16:
7713 case R_PPC64_TPREL16_LO:
7714 case R_PPC64_TPREL16_HI:
7715 case R_PPC64_TPREL16_HA:
7716 case R_PPC64_TPREL16_DS:
7717 case R_PPC64_TPREL16_LO_DS:
7718 case R_PPC64_TPREL16_HIGH:
7719 case R_PPC64_TPREL16_HIGHA:
7720 case R_PPC64_TPREL16_HIGHER:
7721 case R_PPC64_TPREL16_HIGHERA:
7722 case R_PPC64_TPREL16_HIGHEST:
7723 case R_PPC64_TPREL16_HIGHESTA:
7724 if (!bfd_link_pic (info))
7727 case R_PPC64_TPREL64:
7728 case R_PPC64_DTPMOD64:
7729 case R_PPC64_DTPREL64:
7730 case R_PPC64_ADDR64:
7734 case R_PPC64_ADDR14:
7735 case R_PPC64_ADDR14_BRNTAKEN:
7736 case R_PPC64_ADDR14_BRTAKEN:
7737 case R_PPC64_ADDR16:
7738 case R_PPC64_ADDR16_DS:
7739 case R_PPC64_ADDR16_HA:
7740 case R_PPC64_ADDR16_HI:
7741 case R_PPC64_ADDR16_HIGH:
7742 case R_PPC64_ADDR16_HIGHA:
7743 case R_PPC64_ADDR16_HIGHER:
7744 case R_PPC64_ADDR16_HIGHERA:
7745 case R_PPC64_ADDR16_HIGHEST:
7746 case R_PPC64_ADDR16_HIGHESTA:
7747 case R_PPC64_ADDR16_LO:
7748 case R_PPC64_ADDR16_LO_DS:
7749 case R_PPC64_ADDR24:
7750 case R_PPC64_ADDR32:
7751 case R_PPC64_UADDR16:
7752 case R_PPC64_UADDR32:
7753 case R_PPC64_UADDR64:
7758 if (local_syms != NULL)
7760 unsigned long r_symndx;
7761 bfd *ibfd = sec->owner;
7763 r_symndx = ELF64_R_SYM (r_info);
7764 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7768 if ((bfd_link_pic (info)
7769 && (must_be_dyn_reloc (info, r_type)
7771 && (!SYMBOLIC_BIND (info, h)
7772 || h->root.type == bfd_link_hash_defweak
7773 || !h->def_regular))))
7774 || (ELIMINATE_COPY_RELOCS
7775 && !bfd_link_pic (info)
7777 && (h->root.type == bfd_link_hash_defweak
7778 || !h->def_regular)))
7785 struct elf_dyn_relocs *p;
7786 struct elf_dyn_relocs **pp;
7787 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7789 /* elf_gc_sweep may have already removed all dyn relocs associated
7790 with local syms for a given section. Also, symbol flags are
7791 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7792 report a dynreloc miscount. */
7793 if (*pp == NULL && info->gc_sections)
7796 while ((p = *pp) != NULL)
7800 if (!must_be_dyn_reloc (info, r_type))
7812 struct ppc_dyn_relocs *p;
7813 struct ppc_dyn_relocs **pp;
7815 bfd_boolean is_ifunc;
7817 if (local_syms == NULL)
7818 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7819 if (sym_sec == NULL)
7822 vpp = &elf_section_data (sym_sec)->local_dynrel;
7823 pp = (struct ppc_dyn_relocs **) vpp;
7825 if (*pp == NULL && info->gc_sections)
7828 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7829 while ((p = *pp) != NULL)
7831 if (p->sec == sec && p->ifunc == is_ifunc)
7842 /* xgettext:c-format */
7843 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7845 bfd_set_error (bfd_error_bad_value);
7849 /* Remove unused Official Procedure Descriptor entries. Currently we
7850 only remove those associated with functions in discarded link-once
7851 sections, or weakly defined functions that have been overridden. It
7852 would be possible to remove many more entries for statically linked
7856 ppc64_elf_edit_opd (struct bfd_link_info *info)
7859 bfd_boolean some_edited = FALSE;
7860 asection *need_pad = NULL;
7861 struct ppc_link_hash_table *htab;
7863 htab = ppc_hash_table (info);
7867 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
7870 Elf_Internal_Rela *relstart, *rel, *relend;
7871 Elf_Internal_Shdr *symtab_hdr;
7872 Elf_Internal_Sym *local_syms;
7873 struct _opd_sec_data *opd;
7874 bfd_boolean need_edit, add_aux_fields, broken;
7875 bfd_size_type cnt_16b = 0;
7877 if (!is_ppc64_elf (ibfd))
7880 sec = bfd_get_section_by_name (ibfd, ".opd");
7881 if (sec == NULL || sec->size == 0)
7884 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7887 if (sec->output_section == bfd_abs_section_ptr)
7890 /* Look through the section relocs. */
7891 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7895 symtab_hdr = &elf_symtab_hdr (ibfd);
7897 /* Read the relocations. */
7898 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7900 if (relstart == NULL)
7903 /* First run through the relocs to check they are sane, and to
7904 determine whether we need to edit this opd section. */
7908 relend = relstart + sec->reloc_count;
7909 for (rel = relstart; rel < relend; )
7911 enum elf_ppc64_reloc_type r_type;
7912 unsigned long r_symndx;
7914 struct elf_link_hash_entry *h;
7915 Elf_Internal_Sym *sym;
7918 /* .opd contains an array of 16 or 24 byte entries. We're
7919 only interested in the reloc pointing to a function entry
7921 offset = rel->r_offset;
7922 if (rel + 1 == relend
7923 || rel[1].r_offset != offset + 8)
7925 /* If someone messes with .opd alignment then after a
7926 "ld -r" we might have padding in the middle of .opd.
7927 Also, there's nothing to prevent someone putting
7928 something silly in .opd with the assembler. No .opd
7929 optimization for them! */
7932 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7937 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7938 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7941 /* xgettext:c-format */
7942 (_("%B: unexpected reloc type %u in .opd section"),
7948 r_symndx = ELF64_R_SYM (rel->r_info);
7949 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7953 if (sym_sec == NULL || sym_sec->owner == NULL)
7955 const char *sym_name;
7957 sym_name = h->root.root.string;
7959 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7963 /* xgettext:c-format */
7964 (_("%B: undefined sym `%s' in .opd section"),
7970 /* opd entries are always for functions defined in the
7971 current input bfd. If the symbol isn't defined in the
7972 input bfd, then we won't be using the function in this
7973 bfd; It must be defined in a linkonce section in another
7974 bfd, or is weak. It's also possible that we are
7975 discarding the function due to a linker script /DISCARD/,
7976 which we test for via the output_section. */
7977 if (sym_sec->owner != ibfd
7978 || sym_sec->output_section == bfd_abs_section_ptr)
7982 if (rel + 1 == relend
7983 || (rel + 2 < relend
7984 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7989 if (sec->size == offset + 24)
7994 if (sec->size == offset + 16)
8001 else if (rel + 1 < relend
8002 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
8003 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
8005 if (rel[0].r_offset == offset + 16)
8007 else if (rel[0].r_offset != offset + 24)
8014 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
8016 if (!broken && (need_edit || add_aux_fields))
8018 Elf_Internal_Rela *write_rel;
8019 Elf_Internal_Shdr *rel_hdr;
8020 bfd_byte *rptr, *wptr;
8021 bfd_byte *new_contents;
8024 new_contents = NULL;
8025 amt = OPD_NDX (sec->size) * sizeof (long);
8026 opd = &ppc64_elf_section_data (sec)->u.opd;
8027 opd->adjust = bfd_zalloc (sec->owner, amt);
8028 if (opd->adjust == NULL)
8030 ppc64_elf_section_data (sec)->sec_type = sec_opd;
8032 /* This seems a waste of time as input .opd sections are all
8033 zeros as generated by gcc, but I suppose there's no reason
8034 this will always be so. We might start putting something in
8035 the third word of .opd entries. */
8036 if ((sec->flags & SEC_IN_MEMORY) == 0)
8039 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
8044 if (local_syms != NULL
8045 && symtab_hdr->contents != (unsigned char *) local_syms)
8047 if (elf_section_data (sec)->relocs != relstart)
8051 sec->contents = loc;
8052 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8055 elf_section_data (sec)->relocs = relstart;
8057 new_contents = sec->contents;
8060 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
8061 if (new_contents == NULL)
8065 wptr = new_contents;
8066 rptr = sec->contents;
8067 write_rel = relstart;
8068 for (rel = relstart; rel < relend; )
8070 unsigned long r_symndx;
8072 struct elf_link_hash_entry *h;
8073 struct ppc_link_hash_entry *fdh = NULL;
8074 Elf_Internal_Sym *sym;
8076 Elf_Internal_Rela *next_rel;
8079 r_symndx = ELF64_R_SYM (rel->r_info);
8080 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8085 if (next_rel + 1 == relend
8086 || (next_rel + 2 < relend
8087 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
8090 /* See if the .opd entry is full 24 byte or
8091 16 byte (with fd_aux entry overlapped with next
8094 if (next_rel == relend)
8096 if (sec->size == rel->r_offset + 16)
8099 else if (next_rel->r_offset == rel->r_offset + 16)
8103 && h->root.root.string[0] == '.')
8105 fdh = ((struct ppc_link_hash_entry *) h)->oh;
8108 fdh = ppc_follow_link (fdh);
8109 if (fdh->elf.root.type != bfd_link_hash_defined
8110 && fdh->elf.root.type != bfd_link_hash_defweak)
8115 skip = (sym_sec->owner != ibfd
8116 || sym_sec->output_section == bfd_abs_section_ptr);
8119 if (fdh != NULL && sym_sec->owner == ibfd)
8121 /* Arrange for the function descriptor sym
8123 fdh->elf.root.u.def.value = 0;
8124 fdh->elf.root.u.def.section = sym_sec;
8126 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
8128 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
8133 if (!dec_dynrel_count (rel->r_info, sec, info,
8137 if (++rel == next_rel)
8140 r_symndx = ELF64_R_SYM (rel->r_info);
8141 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8148 /* We'll be keeping this opd entry. */
8153 /* Redefine the function descriptor symbol to
8154 this location in the opd section. It is
8155 necessary to update the value here rather
8156 than using an array of adjustments as we do
8157 for local symbols, because various places
8158 in the generic ELF code use the value
8159 stored in u.def.value. */
8160 fdh->elf.root.u.def.value = wptr - new_contents;
8161 fdh->adjust_done = 1;
8164 /* Local syms are a bit tricky. We could
8165 tweak them as they can be cached, but
8166 we'd need to look through the local syms
8167 for the function descriptor sym which we
8168 don't have at the moment. So keep an
8169 array of adjustments. */
8170 adjust = (wptr - new_contents) - (rptr - sec->contents);
8171 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8174 memcpy (wptr, rptr, opd_ent_size);
8175 wptr += opd_ent_size;
8176 if (add_aux_fields && opd_ent_size == 16)
8178 memset (wptr, '\0', 8);
8182 /* We need to adjust any reloc offsets to point to the
8184 for ( ; rel != next_rel; ++rel)
8186 rel->r_offset += adjust;
8187 if (write_rel != rel)
8188 memcpy (write_rel, rel, sizeof (*rel));
8193 rptr += opd_ent_size;
8196 sec->size = wptr - new_contents;
8197 sec->reloc_count = write_rel - relstart;
8200 free (sec->contents);
8201 sec->contents = new_contents;
8204 /* Fudge the header size too, as this is used later in
8205 elf_bfd_final_link if we are emitting relocs. */
8206 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8207 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
8210 else if (elf_section_data (sec)->relocs != relstart)
8213 if (local_syms != NULL
8214 && symtab_hdr->contents != (unsigned char *) local_syms)
8216 if (!info->keep_memory)
8219 symtab_hdr->contents = (unsigned char *) local_syms;
8224 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8226 /* If we are doing a final link and the last .opd entry is just 16 byte
8227 long, add a 8 byte padding after it. */
8228 if (need_pad != NULL && !bfd_link_relocatable (info))
8232 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8234 BFD_ASSERT (need_pad->size > 0);
8236 p = bfd_malloc (need_pad->size + 8);
8240 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8241 p, 0, need_pad->size))
8244 need_pad->contents = p;
8245 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8249 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8253 need_pad->contents = p;
8256 memset (need_pad->contents + need_pad->size, 0, 8);
8257 need_pad->size += 8;
8263 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
8266 ppc64_elf_tls_setup (struct bfd_link_info *info)
8268 struct ppc_link_hash_table *htab;
8270 htab = ppc_hash_table (info);
8274 if (abiversion (info->output_bfd) == 1)
8277 if (htab->params->no_multi_toc)
8278 htab->do_multi_toc = 0;
8279 else if (!htab->do_multi_toc)
8280 htab->params->no_multi_toc = 1;
8282 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8283 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8284 FALSE, FALSE, TRUE));
8285 /* Move dynamic linking info to the function descriptor sym. */
8286 if (htab->tls_get_addr != NULL)
8287 func_desc_adjust (&htab->tls_get_addr->elf, info);
8288 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8289 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8290 FALSE, FALSE, TRUE));
8291 if (htab->params->tls_get_addr_opt)
8293 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8295 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8296 FALSE, FALSE, TRUE);
8298 func_desc_adjust (opt, info);
8299 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8300 FALSE, FALSE, TRUE);
8302 && (opt_fd->root.type == bfd_link_hash_defined
8303 || opt_fd->root.type == bfd_link_hash_defweak))
8305 /* If glibc supports an optimized __tls_get_addr call stub,
8306 signalled by the presence of __tls_get_addr_opt, and we'll
8307 be calling __tls_get_addr via a plt call stub, then
8308 make __tls_get_addr point to __tls_get_addr_opt. */
8309 tga_fd = &htab->tls_get_addr_fd->elf;
8310 if (htab->elf.dynamic_sections_created
8312 && (tga_fd->type == STT_FUNC
8313 || tga_fd->needs_plt)
8314 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8315 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8316 && tga_fd->root.type == bfd_link_hash_undefweak)))
8318 struct plt_entry *ent;
8320 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8321 if (ent->plt.refcount > 0)
8325 tga_fd->root.type = bfd_link_hash_indirect;
8326 tga_fd->root.u.i.link = &opt_fd->root;
8327 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8329 if (opt_fd->dynindx != -1)
8331 /* Use __tls_get_addr_opt in dynamic relocations. */
8332 opt_fd->dynindx = -1;
8333 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8334 opt_fd->dynstr_index);
8335 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
8338 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8339 tga = &htab->tls_get_addr->elf;
8340 if (opt != NULL && tga != NULL)
8342 tga->root.type = bfd_link_hash_indirect;
8343 tga->root.u.i.link = &opt->root;
8344 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8346 _bfd_elf_link_hash_hide_symbol (info, opt,
8348 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8350 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8351 htab->tls_get_addr_fd->is_func_descriptor = 1;
8352 if (htab->tls_get_addr != NULL)
8354 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8355 htab->tls_get_addr->is_func = 1;
8360 else if (htab->params->tls_get_addr_opt < 0)
8361 htab->params->tls_get_addr_opt = 0;
8363 return _bfd_elf_tls_setup (info->output_bfd, info);
8366 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8370 branch_reloc_hash_match (const bfd *ibfd,
8371 const Elf_Internal_Rela *rel,
8372 const struct ppc_link_hash_entry *hash1,
8373 const struct ppc_link_hash_entry *hash2)
8375 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8376 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8377 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8379 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8381 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8382 struct elf_link_hash_entry *h;
8384 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8385 h = elf_follow_link (h);
8386 if (h == &hash1->elf || h == &hash2->elf)
8392 /* Run through all the TLS relocs looking for optimization
8393 opportunities. The linker has been hacked (see ppc64elf.em) to do
8394 a preliminary section layout so that we know the TLS segment
8395 offsets. We can't optimize earlier because some optimizations need
8396 to know the tp offset, and we need to optimize before allocating
8397 dynamic relocations. */
8400 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8404 struct ppc_link_hash_table *htab;
8405 unsigned char *toc_ref;
8408 if (!bfd_link_executable (info))
8411 htab = ppc_hash_table (info);
8415 /* Make two passes over the relocs. On the first pass, mark toc
8416 entries involved with tls relocs, and check that tls relocs
8417 involved in setting up a tls_get_addr call are indeed followed by
8418 such a call. If they are not, we can't do any tls optimization.
8419 On the second pass twiddle tls_mask flags to notify
8420 relocate_section that optimization can be done, and adjust got
8421 and plt refcounts. */
8423 for (pass = 0; pass < 2; ++pass)
8424 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8426 Elf_Internal_Sym *locsyms = NULL;
8427 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8429 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8430 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8432 Elf_Internal_Rela *relstart, *rel, *relend;
8433 bfd_boolean found_tls_get_addr_arg = 0;
8435 /* Read the relocations. */
8436 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8438 if (relstart == NULL)
8444 relend = relstart + sec->reloc_count;
8445 for (rel = relstart; rel < relend; rel++)
8447 enum elf_ppc64_reloc_type r_type;
8448 unsigned long r_symndx;
8449 struct elf_link_hash_entry *h;
8450 Elf_Internal_Sym *sym;
8452 unsigned char *tls_mask;
8453 unsigned char tls_set, tls_clear, tls_type = 0;
8455 bfd_boolean ok_tprel, is_local;
8456 long toc_ref_index = 0;
8457 int expecting_tls_get_addr = 0;
8458 bfd_boolean ret = FALSE;
8460 r_symndx = ELF64_R_SYM (rel->r_info);
8461 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8465 if (elf_section_data (sec)->relocs != relstart)
8467 if (toc_ref != NULL)
8470 && (elf_symtab_hdr (ibfd).contents
8471 != (unsigned char *) locsyms))
8478 if (h->root.type == bfd_link_hash_defined
8479 || h->root.type == bfd_link_hash_defweak)
8480 value = h->root.u.def.value;
8481 else if (h->root.type == bfd_link_hash_undefweak)
8485 found_tls_get_addr_arg = 0;
8490 /* Symbols referenced by TLS relocs must be of type
8491 STT_TLS. So no need for .opd local sym adjust. */
8492 value = sym->st_value;
8501 && h->root.type == bfd_link_hash_undefweak)
8503 else if (sym_sec != NULL
8504 && sym_sec->output_section != NULL)
8506 value += sym_sec->output_offset;
8507 value += sym_sec->output_section->vma;
8508 value -= htab->elf.tls_sec->vma;
8509 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8510 < (bfd_vma) 1 << 32);
8514 r_type = ELF64_R_TYPE (rel->r_info);
8515 /* If this section has old-style __tls_get_addr calls
8516 without marker relocs, then check that each
8517 __tls_get_addr call reloc is preceded by a reloc
8518 that conceivably belongs to the __tls_get_addr arg
8519 setup insn. If we don't find matching arg setup
8520 relocs, don't do any tls optimization. */
8522 && sec->has_tls_get_addr_call
8524 && (h == &htab->tls_get_addr->elf
8525 || h == &htab->tls_get_addr_fd->elf)
8526 && !found_tls_get_addr_arg
8527 && is_branch_reloc (r_type))
8529 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8530 "TLS optimization disabled\n"),
8531 ibfd, sec, rel->r_offset);
8536 found_tls_get_addr_arg = 0;
8539 case R_PPC64_GOT_TLSLD16:
8540 case R_PPC64_GOT_TLSLD16_LO:
8541 expecting_tls_get_addr = 1;
8542 found_tls_get_addr_arg = 1;
8545 case R_PPC64_GOT_TLSLD16_HI:
8546 case R_PPC64_GOT_TLSLD16_HA:
8547 /* These relocs should never be against a symbol
8548 defined in a shared lib. Leave them alone if
8549 that turns out to be the case. */
8556 tls_type = TLS_TLS | TLS_LD;
8559 case R_PPC64_GOT_TLSGD16:
8560 case R_PPC64_GOT_TLSGD16_LO:
8561 expecting_tls_get_addr = 1;
8562 found_tls_get_addr_arg = 1;
8565 case R_PPC64_GOT_TLSGD16_HI:
8566 case R_PPC64_GOT_TLSGD16_HA:
8572 tls_set = TLS_TLS | TLS_TPRELGD;
8574 tls_type = TLS_TLS | TLS_GD;
8577 case R_PPC64_GOT_TPREL16_DS:
8578 case R_PPC64_GOT_TPREL16_LO_DS:
8579 case R_PPC64_GOT_TPREL16_HI:
8580 case R_PPC64_GOT_TPREL16_HA:
8585 tls_clear = TLS_TPREL;
8586 tls_type = TLS_TLS | TLS_TPREL;
8593 found_tls_get_addr_arg = 1;
8598 case R_PPC64_TOC16_LO:
8599 if (sym_sec == NULL || sym_sec != toc)
8602 /* Mark this toc entry as referenced by a TLS
8603 code sequence. We can do that now in the
8604 case of R_PPC64_TLS, and after checking for
8605 tls_get_addr for the TOC16 relocs. */
8606 if (toc_ref == NULL)
8607 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8608 if (toc_ref == NULL)
8612 value = h->root.u.def.value;
8614 value = sym->st_value;
8615 value += rel->r_addend;
8618 BFD_ASSERT (value < toc->size
8619 && toc->output_offset % 8 == 0);
8620 toc_ref_index = (value + toc->output_offset) / 8;
8621 if (r_type == R_PPC64_TLS
8622 || r_type == R_PPC64_TLSGD
8623 || r_type == R_PPC64_TLSLD)
8625 toc_ref[toc_ref_index] = 1;
8629 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8634 expecting_tls_get_addr = 2;
8637 case R_PPC64_TPREL64:
8641 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8646 tls_set = TLS_EXPLICIT;
8647 tls_clear = TLS_TPREL;
8652 case R_PPC64_DTPMOD64:
8656 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8658 if (rel + 1 < relend
8660 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8661 && rel[1].r_offset == rel->r_offset + 8)
8665 tls_set = TLS_EXPLICIT | TLS_GD;
8668 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8677 tls_set = TLS_EXPLICIT;
8688 if (!expecting_tls_get_addr
8689 || !sec->has_tls_get_addr_call)
8692 if (rel + 1 < relend
8693 && branch_reloc_hash_match (ibfd, rel + 1,
8695 htab->tls_get_addr_fd))
8697 if (expecting_tls_get_addr == 2)
8699 /* Check for toc tls entries. */
8700 unsigned char *toc_tls;
8703 retval = get_tls_mask (&toc_tls, NULL, NULL,
8708 if (toc_tls != NULL)
8710 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8711 found_tls_get_addr_arg = 1;
8713 toc_ref[toc_ref_index] = 1;
8719 if (expecting_tls_get_addr != 1)
8722 /* Uh oh, we didn't find the expected call. We
8723 could just mark this symbol to exclude it
8724 from tls optimization but it's safer to skip
8725 the entire optimization. */
8726 /* xgettext:c-format */
8727 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8728 "TLS optimization disabled\n"),
8729 ibfd, sec, rel->r_offset);
8734 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8736 struct plt_entry *ent;
8737 for (ent = htab->tls_get_addr->elf.plt.plist;
8740 if (ent->addend == 0)
8742 if (ent->plt.refcount > 0)
8744 ent->plt.refcount -= 1;
8745 expecting_tls_get_addr = 0;
8751 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8753 struct plt_entry *ent;
8754 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8757 if (ent->addend == 0)
8759 if (ent->plt.refcount > 0)
8760 ent->plt.refcount -= 1;
8768 if ((tls_set & TLS_EXPLICIT) == 0)
8770 struct got_entry *ent;
8772 /* Adjust got entry for this reloc. */
8776 ent = elf_local_got_ents (ibfd)[r_symndx];
8778 for (; ent != NULL; ent = ent->next)
8779 if (ent->addend == rel->r_addend
8780 && ent->owner == ibfd
8781 && ent->tls_type == tls_type)
8788 /* We managed to get rid of a got entry. */
8789 if (ent->got.refcount > 0)
8790 ent->got.refcount -= 1;
8795 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8796 we'll lose one or two dyn relocs. */
8797 if (!dec_dynrel_count (rel->r_info, sec, info,
8801 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8803 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8809 *tls_mask |= tls_set;
8810 *tls_mask &= ~tls_clear;
8813 if (elf_section_data (sec)->relocs != relstart)
8818 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8820 if (!info->keep_memory)
8823 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8827 if (toc_ref != NULL)
8832 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8833 the values of any global symbols in a toc section that has been
8834 edited. Globals in toc sections should be a rarity, so this function
8835 sets a flag if any are found in toc sections other than the one just
8836 edited, so that futher hash table traversals can be avoided. */
8838 struct adjust_toc_info
8841 unsigned long *skip;
8842 bfd_boolean global_toc_syms;
8845 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8848 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8850 struct ppc_link_hash_entry *eh;
8851 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8854 if (h->root.type != bfd_link_hash_defined
8855 && h->root.type != bfd_link_hash_defweak)
8858 eh = (struct ppc_link_hash_entry *) h;
8859 if (eh->adjust_done)
8862 if (eh->elf.root.u.def.section == toc_inf->toc)
8864 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8865 i = toc_inf->toc->rawsize >> 3;
8867 i = eh->elf.root.u.def.value >> 3;
8869 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8872 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8875 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8876 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8879 eh->elf.root.u.def.value -= toc_inf->skip[i];
8880 eh->adjust_done = 1;
8882 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8883 toc_inf->global_toc_syms = TRUE;
8888 /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect
8889 on a _LO variety toc/got reloc. */
8892 ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type)
8894 return ((insn & (0x3f << 26)) == 12u << 26 /* addic */
8895 || (insn & (0x3f << 26)) == 14u << 26 /* addi */
8896 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8897 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8898 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8899 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8900 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8901 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8902 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8903 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8904 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8905 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8906 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8907 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8908 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8909 || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */
8910 || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */
8911 /* Exclude lfqu by testing reloc. If relocs are ever
8912 defined for the reduced D field in psq_lu then those
8913 will need testing too. */
8914 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
8915 || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */
8917 || (insn & (0x3f << 26)) == 60u << 26 /* stfq */
8918 || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */
8919 /* Exclude stfqu. psq_stu as above for psq_lu. */
8920 && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO)
8921 || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */
8922 && (insn & 1) == 0));
8925 /* Examine all relocs referencing .toc sections in order to remove
8926 unused .toc entries. */
8929 ppc64_elf_edit_toc (struct bfd_link_info *info)
8932 struct adjust_toc_info toc_inf;
8933 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8935 htab->do_toc_opt = 1;
8936 toc_inf.global_toc_syms = TRUE;
8937 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8939 asection *toc, *sec;
8940 Elf_Internal_Shdr *symtab_hdr;
8941 Elf_Internal_Sym *local_syms;
8942 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8943 unsigned long *skip, *drop;
8944 unsigned char *used;
8945 unsigned char *keep, last, some_unused;
8947 if (!is_ppc64_elf (ibfd))
8950 toc = bfd_get_section_by_name (ibfd, ".toc");
8953 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8954 || discarded_section (toc))
8959 symtab_hdr = &elf_symtab_hdr (ibfd);
8961 /* Look at sections dropped from the final link. */
8964 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8966 if (sec->reloc_count == 0
8967 || !discarded_section (sec)
8968 || get_opd_info (sec)
8969 || (sec->flags & SEC_ALLOC) == 0
8970 || (sec->flags & SEC_DEBUGGING) != 0)
8973 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8974 if (relstart == NULL)
8977 /* Run through the relocs to see which toc entries might be
8979 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8981 enum elf_ppc64_reloc_type r_type;
8982 unsigned long r_symndx;
8984 struct elf_link_hash_entry *h;
8985 Elf_Internal_Sym *sym;
8988 r_type = ELF64_R_TYPE (rel->r_info);
8995 case R_PPC64_TOC16_LO:
8996 case R_PPC64_TOC16_HI:
8997 case R_PPC64_TOC16_HA:
8998 case R_PPC64_TOC16_DS:
8999 case R_PPC64_TOC16_LO_DS:
9003 r_symndx = ELF64_R_SYM (rel->r_info);
9004 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9012 val = h->root.u.def.value;
9014 val = sym->st_value;
9015 val += rel->r_addend;
9017 if (val >= toc->size)
9020 /* Anything in the toc ought to be aligned to 8 bytes.
9021 If not, don't mark as unused. */
9027 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9032 skip[val >> 3] = ref_from_discarded;
9035 if (elf_section_data (sec)->relocs != relstart)
9039 /* For largetoc loads of address constants, we can convert
9040 . addis rx,2,addr@got@ha
9041 . ld ry,addr@got@l(rx)
9043 . addis rx,2,addr@toc@ha
9044 . addi ry,rx,addr@toc@l
9045 when addr is within 2G of the toc pointer. This then means
9046 that the word storing "addr" in the toc is no longer needed. */
9048 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
9049 && toc->output_section->rawsize < (bfd_vma) 1 << 31
9050 && toc->reloc_count != 0)
9052 /* Read toc relocs. */
9053 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9055 if (toc_relocs == NULL)
9058 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9060 enum elf_ppc64_reloc_type r_type;
9061 unsigned long r_symndx;
9063 struct elf_link_hash_entry *h;
9064 Elf_Internal_Sym *sym;
9067 r_type = ELF64_R_TYPE (rel->r_info);
9068 if (r_type != R_PPC64_ADDR64)
9071 r_symndx = ELF64_R_SYM (rel->r_info);
9072 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9077 || sym_sec->output_section == NULL
9078 || discarded_section (sym_sec))
9081 if (!SYMBOL_REFERENCES_LOCAL (info, h))
9086 if (h->type == STT_GNU_IFUNC)
9088 val = h->root.u.def.value;
9092 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9094 val = sym->st_value;
9096 val += rel->r_addend;
9097 val += sym_sec->output_section->vma + sym_sec->output_offset;
9099 /* We don't yet know the exact toc pointer value, but we
9100 know it will be somewhere in the toc section. Don't
9101 optimize if the difference from any possible toc
9102 pointer is outside [ff..f80008000, 7fff7fff]. */
9103 addr = toc->output_section->vma + TOC_BASE_OFF;
9104 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9107 addr = toc->output_section->vma + toc->output_section->rawsize;
9108 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9113 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9118 skip[rel->r_offset >> 3]
9119 |= can_optimize | ((rel - toc_relocs) << 2);
9126 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9130 if (local_syms != NULL
9131 && symtab_hdr->contents != (unsigned char *) local_syms)
9135 && elf_section_data (sec)->relocs != relstart)
9137 if (toc_relocs != NULL
9138 && elf_section_data (toc)->relocs != toc_relocs)
9145 /* Now check all kept sections that might reference the toc.
9146 Check the toc itself last. */
9147 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9150 sec = (sec == toc ? NULL
9151 : sec->next == NULL ? toc
9152 : sec->next == toc && toc->next ? toc->next
9157 if (sec->reloc_count == 0
9158 || discarded_section (sec)
9159 || get_opd_info (sec)
9160 || (sec->flags & SEC_ALLOC) == 0
9161 || (sec->flags & SEC_DEBUGGING) != 0)
9164 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9166 if (relstart == NULL)
9172 /* Mark toc entries referenced as used. */
9176 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9178 enum elf_ppc64_reloc_type r_type;
9179 unsigned long r_symndx;
9181 struct elf_link_hash_entry *h;
9182 Elf_Internal_Sym *sym;
9184 enum {no_check, check_lo, check_ha} insn_check;
9186 r_type = ELF64_R_TYPE (rel->r_info);
9190 insn_check = no_check;
9193 case R_PPC64_GOT_TLSLD16_HA:
9194 case R_PPC64_GOT_TLSGD16_HA:
9195 case R_PPC64_GOT_TPREL16_HA:
9196 case R_PPC64_GOT_DTPREL16_HA:
9197 case R_PPC64_GOT16_HA:
9198 case R_PPC64_TOC16_HA:
9199 insn_check = check_ha;
9202 case R_PPC64_GOT_TLSLD16_LO:
9203 case R_PPC64_GOT_TLSGD16_LO:
9204 case R_PPC64_GOT_TPREL16_LO_DS:
9205 case R_PPC64_GOT_DTPREL16_LO_DS:
9206 case R_PPC64_GOT16_LO:
9207 case R_PPC64_GOT16_LO_DS:
9208 case R_PPC64_TOC16_LO:
9209 case R_PPC64_TOC16_LO_DS:
9210 insn_check = check_lo;
9214 if (insn_check != no_check)
9216 bfd_vma off = rel->r_offset & ~3;
9217 unsigned char buf[4];
9220 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9225 insn = bfd_get_32 (ibfd, buf);
9226 if (insn_check == check_lo
9227 ? !ok_lo_toc_insn (insn, r_type)
9228 : ((insn & ((0x3f << 26) | 0x1f << 16))
9229 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9233 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9234 sprintf (str, "%#08x", insn);
9235 info->callbacks->einfo
9236 /* xgettext:c-format */
9237 (_("%P: %H: toc optimization is not supported for"
9238 " %s instruction.\n"),
9239 ibfd, sec, rel->r_offset & ~3, str);
9246 case R_PPC64_TOC16_LO:
9247 case R_PPC64_TOC16_HI:
9248 case R_PPC64_TOC16_HA:
9249 case R_PPC64_TOC16_DS:
9250 case R_PPC64_TOC16_LO_DS:
9251 /* In case we're taking addresses of toc entries. */
9252 case R_PPC64_ADDR64:
9259 r_symndx = ELF64_R_SYM (rel->r_info);
9260 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9271 val = h->root.u.def.value;
9273 val = sym->st_value;
9274 val += rel->r_addend;
9276 if (val >= toc->size)
9279 if ((skip[val >> 3] & can_optimize) != 0)
9286 case R_PPC64_TOC16_HA:
9289 case R_PPC64_TOC16_LO_DS:
9290 off = rel->r_offset;
9291 off += (bfd_big_endian (ibfd) ? -2 : 3);
9292 if (!bfd_get_section_contents (ibfd, sec, &opc,
9298 if ((opc & (0x3f << 2)) == (58u << 2))
9303 /* Wrong sort of reloc, or not a ld. We may
9304 as well clear ref_from_discarded too. */
9311 /* For the toc section, we only mark as used if this
9312 entry itself isn't unused. */
9313 else if ((used[rel->r_offset >> 3]
9314 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9317 /* Do all the relocs again, to catch reference
9326 if (elf_section_data (sec)->relocs != relstart)
9330 /* Merge the used and skip arrays. Assume that TOC
9331 doublewords not appearing as either used or unused belong
9332 to to an entry more than one doubleword in size. */
9333 for (drop = skip, keep = used, last = 0, some_unused = 0;
9334 drop < skip + (toc->size + 7) / 8;
9339 *drop &= ~ref_from_discarded;
9340 if ((*drop & can_optimize) != 0)
9344 else if ((*drop & ref_from_discarded) != 0)
9347 last = ref_from_discarded;
9357 bfd_byte *contents, *src;
9359 Elf_Internal_Sym *sym;
9360 bfd_boolean local_toc_syms = FALSE;
9362 /* Shuffle the toc contents, and at the same time convert the
9363 skip array from booleans into offsets. */
9364 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9367 elf_section_data (toc)->this_hdr.contents = contents;
9369 for (src = contents, off = 0, drop = skip;
9370 src < contents + toc->size;
9373 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9378 memcpy (src - off, src, 8);
9382 toc->rawsize = toc->size;
9383 toc->size = src - contents - off;
9385 /* Adjust addends for relocs against the toc section sym,
9386 and optimize any accesses we can. */
9387 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9389 if (sec->reloc_count == 0
9390 || discarded_section (sec))
9393 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9395 if (relstart == NULL)
9398 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9400 enum elf_ppc64_reloc_type r_type;
9401 unsigned long r_symndx;
9403 struct elf_link_hash_entry *h;
9406 r_type = ELF64_R_TYPE (rel->r_info);
9413 case R_PPC64_TOC16_LO:
9414 case R_PPC64_TOC16_HI:
9415 case R_PPC64_TOC16_HA:
9416 case R_PPC64_TOC16_DS:
9417 case R_PPC64_TOC16_LO_DS:
9418 case R_PPC64_ADDR64:
9422 r_symndx = ELF64_R_SYM (rel->r_info);
9423 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9431 val = h->root.u.def.value;
9434 val = sym->st_value;
9436 local_toc_syms = TRUE;
9439 val += rel->r_addend;
9441 if (val > toc->rawsize)
9443 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9445 else if ((skip[val >> 3] & can_optimize) != 0)
9447 Elf_Internal_Rela *tocrel
9448 = toc_relocs + (skip[val >> 3] >> 2);
9449 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9453 case R_PPC64_TOC16_HA:
9454 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9457 case R_PPC64_TOC16_LO_DS:
9458 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9462 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9464 info->callbacks->einfo
9465 /* xgettext:c-format */
9466 (_("%P: %H: %s references "
9467 "optimized away TOC entry\n"),
9468 ibfd, sec, rel->r_offset,
9469 ppc64_elf_howto_table[r_type]->name);
9470 bfd_set_error (bfd_error_bad_value);
9473 rel->r_addend = tocrel->r_addend;
9474 elf_section_data (sec)->relocs = relstart;
9478 if (h != NULL || sym->st_value != 0)
9481 rel->r_addend -= skip[val >> 3];
9482 elf_section_data (sec)->relocs = relstart;
9485 if (elf_section_data (sec)->relocs != relstart)
9489 /* We shouldn't have local or global symbols defined in the TOC,
9490 but handle them anyway. */
9491 if (local_syms != NULL)
9492 for (sym = local_syms;
9493 sym < local_syms + symtab_hdr->sh_info;
9495 if (sym->st_value != 0
9496 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9500 if (sym->st_value > toc->rawsize)
9501 i = toc->rawsize >> 3;
9503 i = sym->st_value >> 3;
9505 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9509 (_("%s defined on removed toc entry"),
9510 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9513 while ((skip[i] & (ref_from_discarded | can_optimize)));
9514 sym->st_value = (bfd_vma) i << 3;
9517 sym->st_value -= skip[i];
9518 symtab_hdr->contents = (unsigned char *) local_syms;
9521 /* Adjust any global syms defined in this toc input section. */
9522 if (toc_inf.global_toc_syms)
9525 toc_inf.skip = skip;
9526 toc_inf.global_toc_syms = FALSE;
9527 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9531 if (toc->reloc_count != 0)
9533 Elf_Internal_Shdr *rel_hdr;
9534 Elf_Internal_Rela *wrel;
9537 /* Remove unused toc relocs, and adjust those we keep. */
9538 if (toc_relocs == NULL)
9539 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9541 if (toc_relocs == NULL)
9545 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9546 if ((skip[rel->r_offset >> 3]
9547 & (ref_from_discarded | can_optimize)) == 0)
9549 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9550 wrel->r_info = rel->r_info;
9551 wrel->r_addend = rel->r_addend;
9554 else if (!dec_dynrel_count (rel->r_info, toc, info,
9555 &local_syms, NULL, NULL))
9558 elf_section_data (toc)->relocs = toc_relocs;
9559 toc->reloc_count = wrel - toc_relocs;
9560 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9561 sz = rel_hdr->sh_entsize;
9562 rel_hdr->sh_size = toc->reloc_count * sz;
9565 else if (toc_relocs != NULL
9566 && elf_section_data (toc)->relocs != toc_relocs)
9569 if (local_syms != NULL
9570 && symtab_hdr->contents != (unsigned char *) local_syms)
9572 if (!info->keep_memory)
9575 symtab_hdr->contents = (unsigned char *) local_syms;
9583 /* Return true iff input section I references the TOC using
9584 instructions limited to +/-32k offsets. */
9587 ppc64_elf_has_small_toc_reloc (asection *i)
9589 return (is_ppc64_elf (i->owner)
9590 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9593 /* Allocate space for one GOT entry. */
9596 allocate_got (struct elf_link_hash_entry *h,
9597 struct bfd_link_info *info,
9598 struct got_entry *gent)
9600 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9601 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9602 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9604 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9605 ? 2 : 1) * sizeof (Elf64_External_Rela);
9606 asection *got = ppc64_elf_tdata (gent->owner)->got;
9608 gent->got.offset = got->size;
9609 got->size += entsize;
9611 if (h->type == STT_GNU_IFUNC)
9613 htab->elf.irelplt->size += rentsize;
9614 htab->got_reli_size += rentsize;
9616 else if ((bfd_link_pic (info)
9617 || (htab->elf.dynamic_sections_created
9619 && !SYMBOL_REFERENCES_LOCAL (info, h)))
9620 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9621 || h->root.type != bfd_link_hash_undefweak))
9623 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9624 relgot->size += rentsize;
9628 /* This function merges got entries in the same toc group. */
9631 merge_got_entries (struct got_entry **pent)
9633 struct got_entry *ent, *ent2;
9635 for (ent = *pent; ent != NULL; ent = ent->next)
9636 if (!ent->is_indirect)
9637 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9638 if (!ent2->is_indirect
9639 && ent2->addend == ent->addend
9640 && ent2->tls_type == ent->tls_type
9641 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9643 ent2->is_indirect = TRUE;
9644 ent2->got.ent = ent;
9648 /* If H is undefined weak, make it dynamic if that makes sense. */
9651 ensure_undefweak_dynamic (struct bfd_link_info *info,
9652 struct elf_link_hash_entry *h)
9654 struct elf_link_hash_table *htab = elf_hash_table (info);
9656 if (htab->dynamic_sections_created
9657 && h->root.type == bfd_link_hash_undefweak
9660 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9661 return bfd_elf_link_record_dynamic_symbol (info, h);
9665 /* Allocate space in .plt, .got and associated reloc sections for
9669 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9671 struct bfd_link_info *info;
9672 struct ppc_link_hash_table *htab;
9674 struct ppc_link_hash_entry *eh;
9675 struct got_entry **pgent, *gent;
9677 if (h->root.type == bfd_link_hash_indirect)
9680 info = (struct bfd_link_info *) inf;
9681 htab = ppc_hash_table (info);
9685 eh = (struct ppc_link_hash_entry *) h;
9686 /* Run through the TLS GD got entries first if we're changing them
9688 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9689 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9690 if (gent->got.refcount > 0
9691 && (gent->tls_type & TLS_GD) != 0)
9693 /* This was a GD entry that has been converted to TPREL. If
9694 there happens to be a TPREL entry we can use that one. */
9695 struct got_entry *ent;
9696 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9697 if (ent->got.refcount > 0
9698 && (ent->tls_type & TLS_TPREL) != 0
9699 && ent->addend == gent->addend
9700 && ent->owner == gent->owner)
9702 gent->got.refcount = 0;
9706 /* If not, then we'll be using our own TPREL entry. */
9707 if (gent->got.refcount != 0)
9708 gent->tls_type = TLS_TLS | TLS_TPREL;
9711 /* Remove any list entry that won't generate a word in the GOT before
9712 we call merge_got_entries. Otherwise we risk merging to empty
9714 pgent = &h->got.glist;
9715 while ((gent = *pgent) != NULL)
9716 if (gent->got.refcount > 0)
9718 if ((gent->tls_type & TLS_LD) != 0
9721 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9722 *pgent = gent->next;
9725 pgent = &gent->next;
9728 *pgent = gent->next;
9730 if (!htab->do_multi_toc)
9731 merge_got_entries (&h->got.glist);
9733 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9734 if (!gent->is_indirect)
9736 /* Make sure this symbol is output as a dynamic symbol.
9737 Undefined weak syms won't yet be marked as dynamic. */
9738 if (!ensure_undefweak_dynamic (info, h))
9741 if (!is_ppc64_elf (gent->owner))
9744 allocate_got (h, info, gent);
9747 if (!htab->elf.dynamic_sections_created
9748 && h->type != STT_GNU_IFUNC)
9749 eh->dyn_relocs = NULL;
9751 if (eh->dyn_relocs != NULL)
9753 struct elf_dyn_relocs *p, **pp;
9755 /* In the shared -Bsymbolic case, discard space allocated for
9756 dynamic pc-relative relocs against symbols which turn out to
9757 be defined in regular objects. For the normal shared case,
9758 discard space for relocs that have become local due to symbol
9759 visibility changes. */
9761 if (bfd_link_pic (info))
9763 /* Relocs that use pc_count are those that appear on a call
9764 insn, or certain REL relocs (see must_be_dyn_reloc) that
9765 can be generated via assembly. We want calls to
9766 protected symbols to resolve directly to the function
9767 rather than going via the plt. If people want function
9768 pointer comparisons to work as expected then they should
9769 avoid writing weird assembly. */
9770 if (SYMBOL_CALLS_LOCAL (info, h))
9772 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9774 p->count -= p->pc_count;
9783 /* Also discard relocs on undefined weak syms with
9784 non-default visibility. */
9785 if (eh->dyn_relocs != NULL
9786 && h->root.type == bfd_link_hash_undefweak)
9788 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9789 eh->dyn_relocs = NULL;
9791 /* Make sure this symbol is output as a dynamic symbol.
9792 Undefined weak syms won't yet be marked as dynamic. */
9793 else if (!ensure_undefweak_dynamic (info, h))
9797 else if (h->type == STT_GNU_IFUNC)
9799 /* A plt entry is always created when making direct calls to
9800 an ifunc, even when building a static executable, but
9801 that doesn't cover all cases. We may have only an ifunc
9802 initialised function pointer for a given ifunc symbol.
9804 For ELFv2, dynamic relocations are not required when
9805 generating a global entry PLT stub. */
9806 if (abiversion (info->output_bfd) >= 2)
9808 if (global_entry_stub (h))
9809 eh->dyn_relocs = NULL;
9812 /* For ELFv1 we have function descriptors. Descriptors need
9813 to be treated like PLT entries and thus have dynamic
9814 relocations. One exception is when the function
9815 descriptor is copied into .dynbss (which should only
9816 happen with ancient versions of gcc). */
9817 else if (h->needs_copy)
9818 eh->dyn_relocs = NULL;
9820 else if (ELIMINATE_COPY_RELOCS)
9822 /* For the non-pic case, discard space for relocs against
9823 symbols which turn out to need copy relocs or are not
9828 /* Make sure this symbol is output as a dynamic symbol.
9829 Undefined weak syms won't yet be marked as dynamic. */
9830 if (!ensure_undefweak_dynamic (info, h))
9833 if (h->dynindx == -1)
9834 eh->dyn_relocs = NULL;
9837 eh->dyn_relocs = NULL;
9840 /* Finally, allocate space. */
9841 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9843 asection *sreloc = elf_section_data (p->sec)->sreloc;
9844 if (eh->elf.type == STT_GNU_IFUNC)
9845 sreloc = htab->elf.irelplt;
9846 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9850 if ((htab->elf.dynamic_sections_created
9851 && h->dynindx != -1)
9852 || h->type == STT_GNU_IFUNC)
9854 struct plt_entry *pent;
9855 bfd_boolean doneone = FALSE;
9856 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9857 if (pent->plt.refcount > 0)
9859 if (!htab->elf.dynamic_sections_created
9860 || h->dynindx == -1)
9863 pent->plt.offset = s->size;
9864 s->size += PLT_ENTRY_SIZE (htab);
9865 s = htab->elf.irelplt;
9869 /* If this is the first .plt entry, make room for the special
9873 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9875 pent->plt.offset = s->size;
9877 /* Make room for this entry. */
9878 s->size += PLT_ENTRY_SIZE (htab);
9880 /* Make room for the .glink code. */
9883 s->size += GLINK_CALL_STUB_SIZE;
9886 /* We need bigger stubs past index 32767. */
9887 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9894 /* We also need to make an entry in the .rela.plt section. */
9895 s = htab->elf.srelplt;
9897 s->size += sizeof (Elf64_External_Rela);
9901 pent->plt.offset = (bfd_vma) -1;
9904 h->plt.plist = NULL;
9910 h->plt.plist = NULL;
9917 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9918 to set up space for global entry stubs. These are put in glink,
9919 after the branch table. */
9922 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9924 struct bfd_link_info *info;
9925 struct ppc_link_hash_table *htab;
9926 struct plt_entry *pent;
9929 if (h->root.type == bfd_link_hash_indirect)
9932 if (!h->pointer_equality_needed)
9939 htab = ppc_hash_table (info);
9944 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9945 if (pent->plt.offset != (bfd_vma) -1
9946 && pent->addend == 0)
9948 /* For ELFv2, if this symbol is not defined in a regular file
9949 and we are not generating a shared library or pie, then we
9950 need to define the symbol in the executable on a call stub.
9951 This is to avoid text relocations. */
9952 s->size = (s->size + 15) & -16;
9953 h->root.type = bfd_link_hash_defined;
9954 h->root.u.def.section = s;
9955 h->root.u.def.value = s->size;
9962 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9963 read-only sections. */
9966 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9968 if (h->root.type == bfd_link_hash_indirect)
9971 if (readonly_dynrelocs (h))
9973 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9975 /* Not an error, just cut short the traversal. */
9981 /* Set the sizes of the dynamic sections. */
9984 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9985 struct bfd_link_info *info)
9987 struct ppc_link_hash_table *htab;
9992 struct got_entry *first_tlsld;
9994 htab = ppc_hash_table (info);
9998 dynobj = htab->elf.dynobj;
10002 if (htab->elf.dynamic_sections_created)
10004 /* Set the contents of the .interp section to the interpreter. */
10005 if (bfd_link_executable (info) && !info->nointerp)
10007 s = bfd_get_linker_section (dynobj, ".interp");
10010 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
10011 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10015 /* Set up .got offsets for local syms, and space for local dynamic
10017 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10019 struct got_entry **lgot_ents;
10020 struct got_entry **end_lgot_ents;
10021 struct plt_entry **local_plt;
10022 struct plt_entry **end_local_plt;
10023 unsigned char *lgot_masks;
10024 bfd_size_type locsymcount;
10025 Elf_Internal_Shdr *symtab_hdr;
10027 if (!is_ppc64_elf (ibfd))
10030 for (s = ibfd->sections; s != NULL; s = s->next)
10032 struct ppc_dyn_relocs *p;
10034 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
10036 if (!bfd_is_abs_section (p->sec)
10037 && bfd_is_abs_section (p->sec->output_section))
10039 /* Input section has been discarded, either because
10040 it is a copy of a linkonce section or due to
10041 linker script /DISCARD/, so we'll be discarding
10044 else if (p->count != 0)
10046 asection *srel = elf_section_data (p->sec)->sreloc;
10048 srel = htab->elf.irelplt;
10049 srel->size += p->count * sizeof (Elf64_External_Rela);
10050 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
10051 info->flags |= DF_TEXTREL;
10056 lgot_ents = elf_local_got_ents (ibfd);
10060 symtab_hdr = &elf_symtab_hdr (ibfd);
10061 locsymcount = symtab_hdr->sh_info;
10062 end_lgot_ents = lgot_ents + locsymcount;
10063 local_plt = (struct plt_entry **) end_lgot_ents;
10064 end_local_plt = local_plt + locsymcount;
10065 lgot_masks = (unsigned char *) end_local_plt;
10066 s = ppc64_elf_tdata (ibfd)->got;
10067 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10069 struct got_entry **pent, *ent;
10072 while ((ent = *pent) != NULL)
10073 if (ent->got.refcount > 0)
10075 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
10077 ppc64_tlsld_got (ibfd)->got.refcount += 1;
10082 unsigned int ent_size = 8;
10083 unsigned int rel_size = sizeof (Elf64_External_Rela);
10085 ent->got.offset = s->size;
10086 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10091 s->size += ent_size;
10092 if ((*lgot_masks & PLT_IFUNC) != 0)
10094 htab->elf.irelplt->size += rel_size;
10095 htab->got_reli_size += rel_size;
10097 else if (bfd_link_pic (info))
10099 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10100 srel->size += rel_size;
10109 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10110 for (; local_plt < end_local_plt; ++local_plt)
10112 struct plt_entry *ent;
10114 for (ent = *local_plt; ent != NULL; ent = ent->next)
10115 if (ent->plt.refcount > 0)
10117 s = htab->elf.iplt;
10118 ent->plt.offset = s->size;
10119 s->size += PLT_ENTRY_SIZE (htab);
10121 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
10124 ent->plt.offset = (bfd_vma) -1;
10128 /* Allocate global sym .plt and .got entries, and space for global
10129 sym dynamic relocs. */
10130 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
10131 /* Stash the end of glink branch table. */
10132 if (htab->glink != NULL)
10133 htab->glink->rawsize = htab->glink->size;
10135 if (!htab->opd_abi && !bfd_link_pic (info))
10136 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
10138 first_tlsld = NULL;
10139 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10141 struct got_entry *ent;
10143 if (!is_ppc64_elf (ibfd))
10146 ent = ppc64_tlsld_got (ibfd);
10147 if (ent->got.refcount > 0)
10149 if (!htab->do_multi_toc && first_tlsld != NULL)
10151 ent->is_indirect = TRUE;
10152 ent->got.ent = first_tlsld;
10156 if (first_tlsld == NULL)
10158 s = ppc64_elf_tdata (ibfd)->got;
10159 ent->got.offset = s->size;
10162 if (bfd_link_pic (info))
10164 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10165 srel->size += sizeof (Elf64_External_Rela);
10170 ent->got.offset = (bfd_vma) -1;
10173 /* We now have determined the sizes of the various dynamic sections.
10174 Allocate memory for them. */
10176 for (s = dynobj->sections; s != NULL; s = s->next)
10178 if ((s->flags & SEC_LINKER_CREATED) == 0)
10181 if (s == htab->brlt || s == htab->relbrlt)
10182 /* These haven't been allocated yet; don't strip. */
10184 else if (s == htab->elf.sgot
10185 || s == htab->elf.splt
10186 || s == htab->elf.iplt
10187 || s == htab->glink
10188 || s == htab->elf.sdynbss
10189 || s == htab->elf.sdynrelro)
10191 /* Strip this section if we don't need it; see the
10194 else if (s == htab->glink_eh_frame)
10196 if (!bfd_is_abs_section (s->output_section))
10197 /* Not sized yet. */
10200 else if (CONST_STRNEQ (s->name, ".rela"))
10204 if (s != htab->elf.srelplt)
10207 /* We use the reloc_count field as a counter if we need
10208 to copy relocs into the output file. */
10209 s->reloc_count = 0;
10214 /* It's not one of our sections, so don't allocate space. */
10220 /* If we don't need this section, strip it from the
10221 output file. This is mostly to handle .rela.bss and
10222 .rela.plt. We must create both sections in
10223 create_dynamic_sections, because they must be created
10224 before the linker maps input sections to output
10225 sections. The linker does that before
10226 adjust_dynamic_symbol is called, and it is that
10227 function which decides whether anything needs to go
10228 into these sections. */
10229 s->flags |= SEC_EXCLUDE;
10233 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10236 /* Allocate memory for the section contents. We use bfd_zalloc
10237 here in case unused entries are not reclaimed before the
10238 section's contents are written out. This should not happen,
10239 but this way if it does we get a R_PPC64_NONE reloc in .rela
10240 sections instead of garbage.
10241 We also rely on the section contents being zero when writing
10242 the GOT and .dynrelro. */
10243 s->contents = bfd_zalloc (dynobj, s->size);
10244 if (s->contents == NULL)
10248 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
10250 if (!is_ppc64_elf (ibfd))
10253 s = ppc64_elf_tdata (ibfd)->got;
10254 if (s != NULL && s != htab->elf.sgot)
10257 s->flags |= SEC_EXCLUDE;
10260 s->contents = bfd_zalloc (ibfd, s->size);
10261 if (s->contents == NULL)
10265 s = ppc64_elf_tdata (ibfd)->relgot;
10269 s->flags |= SEC_EXCLUDE;
10272 s->contents = bfd_zalloc (ibfd, s->size);
10273 if (s->contents == NULL)
10276 s->reloc_count = 0;
10281 if (htab->elf.dynamic_sections_created)
10283 bfd_boolean tls_opt;
10285 /* Add some entries to the .dynamic section. We fill in the
10286 values later, in ppc64_elf_finish_dynamic_sections, but we
10287 must add the entries now so that we get the correct size for
10288 the .dynamic section. The DT_DEBUG entry is filled in by the
10289 dynamic linker and used by the debugger. */
10290 #define add_dynamic_entry(TAG, VAL) \
10291 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10293 if (bfd_link_executable (info))
10295 if (!add_dynamic_entry (DT_DEBUG, 0))
10299 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
10301 if (!add_dynamic_entry (DT_PLTGOT, 0)
10302 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10303 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
10304 || !add_dynamic_entry (DT_JMPREL, 0)
10305 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
10309 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
10311 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10312 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
10316 tls_opt = (htab->params->tls_get_addr_opt
10317 && htab->tls_get_addr_fd != NULL
10318 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10319 if (tls_opt || !htab->opd_abi)
10321 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10327 if (!add_dynamic_entry (DT_RELA, 0)
10328 || !add_dynamic_entry (DT_RELASZ, 0)
10329 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
10332 /* If any dynamic relocs apply to a read-only section,
10333 then we need a DT_TEXTREL entry. */
10334 if ((info->flags & DF_TEXTREL) == 0)
10335 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
10337 if ((info->flags & DF_TEXTREL) != 0)
10339 if (!add_dynamic_entry (DT_TEXTREL, 0))
10344 #undef add_dynamic_entry
10349 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10352 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10354 if (h->plt.plist != NULL
10356 && !h->pointer_equality_needed)
10359 return _bfd_elf_hash_symbol (h);
10362 /* Determine the type of stub needed, if any, for a call. */
10364 static inline enum ppc_stub_type
10365 ppc_type_of_stub (asection *input_sec,
10366 const Elf_Internal_Rela *rel,
10367 struct ppc_link_hash_entry **hash,
10368 struct plt_entry **plt_ent,
10369 bfd_vma destination,
10370 unsigned long local_off)
10372 struct ppc_link_hash_entry *h = *hash;
10374 bfd_vma branch_offset;
10375 bfd_vma max_branch_offset;
10376 enum elf_ppc64_reloc_type r_type;
10380 struct plt_entry *ent;
10381 struct ppc_link_hash_entry *fdh = h;
10383 && h->oh->is_func_descriptor)
10385 fdh = ppc_follow_link (h->oh);
10389 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10390 if (ent->addend == rel->r_addend
10391 && ent->plt.offset != (bfd_vma) -1)
10394 return ppc_stub_plt_call;
10397 /* Here, we know we don't have a plt entry. If we don't have a
10398 either a defined function descriptor or a defined entry symbol
10399 in a regular object file, then it is pointless trying to make
10400 any other type of stub. */
10401 if (!is_static_defined (&fdh->elf)
10402 && !is_static_defined (&h->elf))
10403 return ppc_stub_none;
10405 else if (elf_local_got_ents (input_sec->owner) != NULL)
10407 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10408 struct plt_entry **local_plt = (struct plt_entry **)
10409 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10410 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10412 if (local_plt[r_symndx] != NULL)
10414 struct plt_entry *ent;
10416 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10417 if (ent->addend == rel->r_addend
10418 && ent->plt.offset != (bfd_vma) -1)
10421 return ppc_stub_plt_call;
10426 /* Determine where the call point is. */
10427 location = (input_sec->output_offset
10428 + input_sec->output_section->vma
10431 branch_offset = destination - location;
10432 r_type = ELF64_R_TYPE (rel->r_info);
10434 /* Determine if a long branch stub is needed. */
10435 max_branch_offset = 1 << 25;
10436 if (r_type != R_PPC64_REL24)
10437 max_branch_offset = 1 << 15;
10439 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10440 /* We need a stub. Figure out whether a long_branch or plt_branch
10441 is needed later. */
10442 return ppc_stub_long_branch;
10444 return ppc_stub_none;
10447 /* With power7 weakly ordered memory model, it is possible for ld.so
10448 to update a plt entry in one thread and have another thread see a
10449 stale zero toc entry. To avoid this we need some sort of acquire
10450 barrier in the call stub. One solution is to make the load of the
10451 toc word seem to appear to depend on the load of the function entry
10452 word. Another solution is to test for r2 being zero, and branch to
10453 the appropriate glink entry if so.
10455 . fake dep barrier compare
10456 . ld 12,xxx(2) ld 12,xxx(2)
10457 . mtctr 12 mtctr 12
10458 . xor 11,12,12 ld 2,xxx+8(2)
10459 . add 2,2,11 cmpldi 2,0
10460 . ld 2,xxx+8(2) bnectr+
10461 . bctr b <glink_entry>
10463 The solution involving the compare turns out to be faster, so
10464 that's what we use unless the branch won't reach. */
10466 #define ALWAYS_USE_FAKE_DEP 0
10467 #define ALWAYS_EMIT_R2SAVE 0
10469 #define PPC_LO(v) ((v) & 0xffff)
10470 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10471 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10473 static inline unsigned int
10474 plt_stub_size (struct ppc_link_hash_table *htab,
10475 struct ppc_stub_hash_entry *stub_entry,
10478 unsigned size = 12;
10480 if (ALWAYS_EMIT_R2SAVE
10481 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10483 if (PPC_HA (off) != 0)
10488 if (htab->params->plt_static_chain)
10490 if (htab->params->plt_thread_safe
10491 && htab->elf.dynamic_sections_created
10492 && stub_entry->h != NULL
10493 && stub_entry->h->elf.dynindx != -1)
10495 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
10498 if (stub_entry->h != NULL
10499 && (stub_entry->h == htab->tls_get_addr_fd
10500 || stub_entry->h == htab->tls_get_addr)
10501 && htab->params->tls_get_addr_opt)
10506 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10507 then return the padding needed to do so. */
10508 static inline unsigned int
10509 plt_stub_pad (struct ppc_link_hash_table *htab,
10510 struct ppc_stub_hash_entry *stub_entry,
10513 int stub_align = 1 << htab->params->plt_stub_align;
10514 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10515 bfd_vma stub_off = stub_entry->group->stub_sec->size;
10517 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10518 > ((stub_size - 1) & -stub_align))
10519 return stub_align - (stub_off & (stub_align - 1));
10523 /* Build a .plt call stub. */
10525 static inline bfd_byte *
10526 build_plt_stub (struct ppc_link_hash_table *htab,
10527 struct ppc_stub_hash_entry *stub_entry,
10528 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10530 bfd *obfd = htab->params->stub_bfd;
10531 bfd_boolean plt_load_toc = htab->opd_abi;
10532 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10533 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10534 && htab->elf.dynamic_sections_created
10535 && stub_entry->h != NULL
10536 && stub_entry->h->elf.dynindx != -1);
10537 bfd_boolean use_fake_dep = plt_thread_safe;
10538 bfd_vma cmp_branch_off = 0;
10540 if (!ALWAYS_USE_FAKE_DEP
10543 && !((stub_entry->h == htab->tls_get_addr_fd
10544 || stub_entry->h == htab->tls_get_addr)
10545 && htab->params->tls_get_addr_opt))
10547 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10548 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10549 / PLT_ENTRY_SIZE (htab));
10550 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10553 if (pltindex > 32768)
10554 glinkoff += (pltindex - 32768) * 4;
10556 + htab->glink->output_offset
10557 + htab->glink->output_section->vma);
10558 from = (p - stub_entry->group->stub_sec->contents
10559 + 4 * (ALWAYS_EMIT_R2SAVE
10560 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10561 + 4 * (PPC_HA (offset) != 0)
10562 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10563 != PPC_HA (offset))
10564 + 4 * (plt_static_chain != 0)
10566 + stub_entry->group->stub_sec->output_offset
10567 + stub_entry->group->stub_sec->output_section->vma);
10568 cmp_branch_off = to - from;
10569 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10572 if (PPC_HA (offset) != 0)
10576 if (ALWAYS_EMIT_R2SAVE
10577 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10578 r[0].r_offset += 4;
10579 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10580 r[1].r_offset = r[0].r_offset + 4;
10581 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10582 r[1].r_addend = r[0].r_addend;
10585 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10587 r[2].r_offset = r[1].r_offset + 4;
10588 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10589 r[2].r_addend = r[0].r_addend;
10593 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10594 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10595 r[2].r_addend = r[0].r_addend + 8;
10596 if (plt_static_chain)
10598 r[3].r_offset = r[2].r_offset + 4;
10599 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10600 r[3].r_addend = r[0].r_addend + 16;
10605 if (ALWAYS_EMIT_R2SAVE
10606 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10607 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10610 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10611 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10615 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10616 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10619 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10621 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10624 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10629 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10630 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10632 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10633 if (plt_static_chain)
10634 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10641 if (ALWAYS_EMIT_R2SAVE
10642 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10643 r[0].r_offset += 4;
10644 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10647 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10649 r[1].r_offset = r[0].r_offset + 4;
10650 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10651 r[1].r_addend = r[0].r_addend;
10655 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10656 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10657 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10658 if (plt_static_chain)
10660 r[2].r_offset = r[1].r_offset + 4;
10661 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10662 r[2].r_addend = r[0].r_addend + 8;
10667 if (ALWAYS_EMIT_R2SAVE
10668 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10669 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10670 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10672 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10674 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10677 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10682 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10683 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10685 if (plt_static_chain)
10686 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10687 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10690 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10692 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10693 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10694 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10697 bfd_put_32 (obfd, BCTR, p), p += 4;
10701 /* Build a special .plt call stub for __tls_get_addr. */
10703 #define LD_R11_0R3 0xe9630000
10704 #define LD_R12_0R3 0xe9830000
10705 #define MR_R0_R3 0x7c601b78
10706 #define CMPDI_R11_0 0x2c2b0000
10707 #define ADD_R3_R12_R13 0x7c6c6a14
10708 #define BEQLR 0x4d820020
10709 #define MR_R3_R0 0x7c030378
10710 #define STD_R11_0R1 0xf9610000
10711 #define BCTRL 0x4e800421
10712 #define LD_R11_0R1 0xe9610000
10713 #define MTLR_R11 0x7d6803a6
10715 static inline bfd_byte *
10716 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10717 struct ppc_stub_hash_entry *stub_entry,
10718 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10720 bfd *obfd = htab->params->stub_bfd;
10722 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10723 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10724 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10725 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10726 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10727 bfd_put_32 (obfd, BEQLR, p), p += 4;
10728 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10729 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10730 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10733 r[0].r_offset += 9 * 4;
10734 p = build_plt_stub (htab, stub_entry, p, offset, r);
10735 bfd_put_32 (obfd, BCTRL, p - 4);
10737 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10738 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10739 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10740 bfd_put_32 (obfd, BLR, p), p += 4;
10745 static Elf_Internal_Rela *
10746 get_relocs (asection *sec, int count)
10748 Elf_Internal_Rela *relocs;
10749 struct bfd_elf_section_data *elfsec_data;
10751 elfsec_data = elf_section_data (sec);
10752 relocs = elfsec_data->relocs;
10753 if (relocs == NULL)
10755 bfd_size_type relsize;
10756 relsize = sec->reloc_count * sizeof (*relocs);
10757 relocs = bfd_alloc (sec->owner, relsize);
10758 if (relocs == NULL)
10760 elfsec_data->relocs = relocs;
10761 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10762 sizeof (Elf_Internal_Shdr));
10763 if (elfsec_data->rela.hdr == NULL)
10765 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10766 * sizeof (Elf64_External_Rela));
10767 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10768 sec->reloc_count = 0;
10770 relocs += sec->reloc_count;
10771 sec->reloc_count += count;
10776 get_r2off (struct bfd_link_info *info,
10777 struct ppc_stub_hash_entry *stub_entry)
10779 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10780 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
10784 /* Support linking -R objects. Get the toc pointer from the
10787 if (!htab->opd_abi)
10789 asection *opd = stub_entry->h->elf.root.u.def.section;
10790 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10792 if (strcmp (opd->name, ".opd") != 0
10793 || opd->reloc_count != 0)
10795 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10796 stub_entry->h->elf.root.root.string);
10797 bfd_set_error (bfd_error_bad_value);
10798 return (bfd_vma) -1;
10800 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10801 return (bfd_vma) -1;
10802 r2off = bfd_get_64 (opd->owner, buf);
10803 r2off -= elf_gp (info->output_bfd);
10805 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
10810 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10812 struct ppc_stub_hash_entry *stub_entry;
10813 struct ppc_branch_hash_entry *br_entry;
10814 struct bfd_link_info *info;
10815 struct ppc_link_hash_table *htab;
10820 Elf_Internal_Rela *r;
10823 /* Massage our args to the form they really have. */
10824 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10827 htab = ppc_hash_table (info);
10831 /* Make a note of the offset within the stubs for this entry. */
10832 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10833 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
10835 htab->stub_count[stub_entry->stub_type - 1] += 1;
10836 switch (stub_entry->stub_type)
10838 case ppc_stub_long_branch:
10839 case ppc_stub_long_branch_r2off:
10840 /* Branches are relative. This is where we are going to. */
10841 dest = (stub_entry->target_value
10842 + stub_entry->target_section->output_offset
10843 + stub_entry->target_section->output_section->vma);
10844 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10847 /* And this is where we are coming from. */
10848 off -= (stub_entry->stub_offset
10849 + stub_entry->group->stub_sec->output_offset
10850 + stub_entry->group->stub_sec->output_section->vma);
10853 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10855 bfd_vma r2off = get_r2off (info, stub_entry);
10857 if (r2off == (bfd_vma) -1)
10859 htab->stub_error = TRUE;
10862 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10865 if (PPC_HA (r2off) != 0)
10867 bfd_put_32 (htab->params->stub_bfd,
10868 ADDIS_R2_R2 | PPC_HA (r2off), loc);
10872 if (PPC_LO (r2off) != 0)
10874 bfd_put_32 (htab->params->stub_bfd,
10875 ADDI_R2_R2 | PPC_LO (r2off), loc);
10881 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10883 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10885 info->callbacks->einfo
10886 (_("%P: long branch stub `%s' offset overflow\n"),
10887 stub_entry->root.string);
10888 htab->stub_error = TRUE;
10892 if (info->emitrelocations)
10894 r = get_relocs (stub_entry->group->stub_sec, 1);
10897 r->r_offset = loc - stub_entry->group->stub_sec->contents;
10898 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10899 r->r_addend = dest;
10900 if (stub_entry->h != NULL)
10902 struct elf_link_hash_entry **hashes;
10903 unsigned long symndx;
10904 struct ppc_link_hash_entry *h;
10906 hashes = elf_sym_hashes (htab->params->stub_bfd);
10907 if (hashes == NULL)
10909 bfd_size_type hsize;
10911 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10912 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
10913 if (hashes == NULL)
10915 elf_sym_hashes (htab->params->stub_bfd) = hashes;
10916 htab->stub_globals = 1;
10918 symndx = htab->stub_globals++;
10920 hashes[symndx] = &h->elf;
10921 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10922 if (h->oh != NULL && h->oh->is_func)
10923 h = ppc_follow_link (h->oh);
10924 if (h->elf.root.u.def.section != stub_entry->target_section)
10925 /* H is an opd symbol. The addend must be zero. */
10929 off = (h->elf.root.u.def.value
10930 + h->elf.root.u.def.section->output_offset
10931 + h->elf.root.u.def.section->output_section->vma);
10932 r->r_addend -= off;
10938 case ppc_stub_plt_branch:
10939 case ppc_stub_plt_branch_r2off:
10940 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10941 stub_entry->root.string + 9,
10943 if (br_entry == NULL)
10945 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10946 stub_entry->root.string);
10947 htab->stub_error = TRUE;
10951 dest = (stub_entry->target_value
10952 + stub_entry->target_section->output_offset
10953 + stub_entry->target_section->output_section->vma);
10954 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10955 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10957 bfd_put_64 (htab->brlt->owner, dest,
10958 htab->brlt->contents + br_entry->offset);
10960 if (br_entry->iter == htab->stub_iteration)
10962 br_entry->iter = 0;
10964 if (htab->relbrlt != NULL)
10966 /* Create a reloc for the branch lookup table entry. */
10967 Elf_Internal_Rela rela;
10970 rela.r_offset = (br_entry->offset
10971 + htab->brlt->output_offset
10972 + htab->brlt->output_section->vma);
10973 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10974 rela.r_addend = dest;
10976 rl = htab->relbrlt->contents;
10977 rl += (htab->relbrlt->reloc_count++
10978 * sizeof (Elf64_External_Rela));
10979 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10981 else if (info->emitrelocations)
10983 r = get_relocs (htab->brlt, 1);
10986 /* brlt, being SEC_LINKER_CREATED does not go through the
10987 normal reloc processing. Symbols and offsets are not
10988 translated from input file to output file form, so
10989 set up the offset per the output file. */
10990 r->r_offset = (br_entry->offset
10991 + htab->brlt->output_offset
10992 + htab->brlt->output_section->vma);
10993 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10994 r->r_addend = dest;
10998 dest = (br_entry->offset
10999 + htab->brlt->output_offset
11000 + htab->brlt->output_section->vma);
11003 - elf_gp (htab->brlt->output_section->owner)
11004 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11006 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11008 info->callbacks->einfo
11009 (_("%P: linkage table error against `%T'\n"),
11010 stub_entry->root.string);
11011 bfd_set_error (bfd_error_bad_value);
11012 htab->stub_error = TRUE;
11016 if (info->emitrelocations)
11018 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
11021 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11022 if (bfd_big_endian (info->output_bfd))
11023 r[0].r_offset += 2;
11024 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
11025 r[0].r_offset += 4;
11026 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
11027 r[0].r_addend = dest;
11028 if (PPC_HA (off) != 0)
11030 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
11031 r[1].r_offset = r[0].r_offset + 4;
11032 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
11033 r[1].r_addend = r[0].r_addend;
11037 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11039 if (PPC_HA (off) != 0)
11042 bfd_put_32 (htab->params->stub_bfd,
11043 ADDIS_R12_R2 | PPC_HA (off), loc);
11045 bfd_put_32 (htab->params->stub_bfd,
11046 LD_R12_0R12 | PPC_LO (off), loc);
11051 bfd_put_32 (htab->params->stub_bfd,
11052 LD_R12_0R2 | PPC_LO (off), loc);
11057 bfd_vma r2off = get_r2off (info, stub_entry);
11059 if (r2off == (bfd_vma) -1)
11061 htab->stub_error = TRUE;
11065 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
11068 if (PPC_HA (off) != 0)
11071 bfd_put_32 (htab->params->stub_bfd,
11072 ADDIS_R12_R2 | PPC_HA (off), loc);
11074 bfd_put_32 (htab->params->stub_bfd,
11075 LD_R12_0R12 | PPC_LO (off), loc);
11078 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
11080 if (PPC_HA (r2off) != 0)
11084 bfd_put_32 (htab->params->stub_bfd,
11085 ADDIS_R2_R2 | PPC_HA (r2off), loc);
11087 if (PPC_LO (r2off) != 0)
11091 bfd_put_32 (htab->params->stub_bfd,
11092 ADDI_R2_R2 | PPC_LO (r2off), loc);
11096 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
11098 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
11101 case ppc_stub_plt_call:
11102 case ppc_stub_plt_call_r2save:
11103 if (stub_entry->h != NULL
11104 && stub_entry->h->is_func_descriptor
11105 && stub_entry->h->oh != NULL)
11107 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
11109 /* If the old-ABI "dot-symbol" is undefined make it weak so
11110 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
11111 if (fh->elf.root.type == bfd_link_hash_undefined
11112 && (stub_entry->h->elf.root.type == bfd_link_hash_defined
11113 || stub_entry->h->elf.root.type == bfd_link_hash_defweak))
11114 fh->elf.root.type = bfd_link_hash_undefweak;
11117 /* Now build the stub. */
11118 dest = stub_entry->plt_ent->plt.offset & ~1;
11119 if (dest >= (bfd_vma) -2)
11122 plt = htab->elf.splt;
11123 if (!htab->elf.dynamic_sections_created
11124 || stub_entry->h == NULL
11125 || stub_entry->h->elf.dynindx == -1)
11126 plt = htab->elf.iplt;
11128 dest += plt->output_offset + plt->output_section->vma;
11130 if (stub_entry->h == NULL
11131 && (stub_entry->plt_ent->plt.offset & 1) == 0)
11133 Elf_Internal_Rela rela;
11136 rela.r_offset = dest;
11138 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11140 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
11141 rela.r_addend = (stub_entry->target_value
11142 + stub_entry->target_section->output_offset
11143 + stub_entry->target_section->output_section->vma);
11145 rl = (htab->elf.irelplt->contents
11146 + (htab->elf.irelplt->reloc_count++
11147 * sizeof (Elf64_External_Rela)));
11148 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
11149 stub_entry->plt_ent->plt.offset |= 1;
11153 - elf_gp (plt->output_section->owner)
11154 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11156 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
11158 info->callbacks->einfo
11159 /* xgettext:c-format */
11160 (_("%P: linkage table error against `%T'\n"),
11161 stub_entry->h != NULL
11162 ? stub_entry->h->elf.root.root.string
11164 bfd_set_error (bfd_error_bad_value);
11165 htab->stub_error = TRUE;
11169 if (htab->params->plt_stub_align != 0)
11171 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11173 stub_entry->group->stub_sec->size += pad;
11174 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
11179 if (info->emitrelocations)
11181 r = get_relocs (stub_entry->group->stub_sec,
11182 ((PPC_HA (off) != 0)
11184 ? 2 + (htab->params->plt_static_chain
11185 && PPC_HA (off + 16) == PPC_HA (off))
11189 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
11190 if (bfd_big_endian (info->output_bfd))
11191 r[0].r_offset += 2;
11192 r[0].r_addend = dest;
11194 if (stub_entry->h != NULL
11195 && (stub_entry->h == htab->tls_get_addr_fd
11196 || stub_entry->h == htab->tls_get_addr)
11197 && htab->params->tls_get_addr_opt)
11198 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
11200 p = build_plt_stub (htab, stub_entry, loc, off, r);
11204 case ppc_stub_save_res:
11212 stub_entry->group->stub_sec->size += size;
11214 if (htab->params->emit_stub_syms)
11216 struct elf_link_hash_entry *h;
11219 const char *const stub_str[] = { "long_branch",
11220 "long_branch_r2off",
11222 "plt_branch_r2off",
11226 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11227 len2 = strlen (stub_entry->root.string);
11228 name = bfd_malloc (len1 + len2 + 2);
11231 memcpy (name, stub_entry->root.string, 9);
11232 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11233 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11234 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
11237 if (h->root.type == bfd_link_hash_new)
11239 h->root.type = bfd_link_hash_defined;
11240 h->root.u.def.section = stub_entry->group->stub_sec;
11241 h->root.u.def.value = stub_entry->stub_offset;
11242 h->ref_regular = 1;
11243 h->def_regular = 1;
11244 h->ref_regular_nonweak = 1;
11245 h->forced_local = 1;
11247 h->root.linker_def = 1;
11254 /* As above, but don't actually build the stub. Just bump offset so
11255 we know stub section sizes, and select plt_branch stubs where
11256 long_branch stubs won't do. */
11259 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
11261 struct ppc_stub_hash_entry *stub_entry;
11262 struct bfd_link_info *info;
11263 struct ppc_link_hash_table *htab;
11267 /* Massage our args to the form they really have. */
11268 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
11271 htab = ppc_hash_table (info);
11275 if (stub_entry->h != NULL
11276 && stub_entry->h->save_res
11277 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11278 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11280 /* Don't make stubs to out-of-line register save/restore
11281 functions. Instead, emit copies of the functions. */
11282 stub_entry->group->needs_save_res = 1;
11283 stub_entry->stub_type = ppc_stub_save_res;
11287 if (stub_entry->stub_type == ppc_stub_plt_call
11288 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
11291 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
11292 if (off >= (bfd_vma) -2)
11294 plt = htab->elf.splt;
11295 if (!htab->elf.dynamic_sections_created
11296 || stub_entry->h == NULL
11297 || stub_entry->h->elf.dynindx == -1)
11298 plt = htab->elf.iplt;
11299 off += (plt->output_offset
11300 + plt->output_section->vma
11301 - elf_gp (plt->output_section->owner)
11302 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11304 size = plt_stub_size (htab, stub_entry, off);
11305 if (htab->params->plt_stub_align)
11306 size += plt_stub_pad (htab, stub_entry, off);
11307 if (info->emitrelocations)
11309 stub_entry->group->stub_sec->reloc_count
11310 += ((PPC_HA (off) != 0)
11312 ? 2 + (htab->params->plt_static_chain
11313 && PPC_HA (off + 16) == PPC_HA (off))
11315 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11320 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11323 bfd_vma local_off = 0;
11325 off = (stub_entry->target_value
11326 + stub_entry->target_section->output_offset
11327 + stub_entry->target_section->output_section->vma);
11328 off -= (stub_entry->group->stub_sec->size
11329 + stub_entry->group->stub_sec->output_offset
11330 + stub_entry->group->stub_sec->output_section->vma);
11332 /* Reset the stub type from the plt variant in case we now
11333 can reach with a shorter stub. */
11334 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11335 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11338 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11340 r2off = get_r2off (info, stub_entry);
11341 if (r2off == (bfd_vma) -1)
11343 htab->stub_error = TRUE;
11347 if (PPC_HA (r2off) != 0)
11349 if (PPC_LO (r2off) != 0)
11354 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11356 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11357 Do the same for -R objects without function descriptors. */
11358 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11359 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11361 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
11363 struct ppc_branch_hash_entry *br_entry;
11365 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11366 stub_entry->root.string + 9,
11368 if (br_entry == NULL)
11370 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
11371 stub_entry->root.string);
11372 htab->stub_error = TRUE;
11376 if (br_entry->iter != htab->stub_iteration)
11378 br_entry->iter = htab->stub_iteration;
11379 br_entry->offset = htab->brlt->size;
11380 htab->brlt->size += 8;
11382 if (htab->relbrlt != NULL)
11383 htab->relbrlt->size += sizeof (Elf64_External_Rela);
11384 else if (info->emitrelocations)
11386 htab->brlt->reloc_count += 1;
11387 htab->brlt->flags |= SEC_RELOC;
11391 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
11392 off = (br_entry->offset
11393 + htab->brlt->output_offset
11394 + htab->brlt->output_section->vma
11395 - elf_gp (htab->brlt->output_section->owner)
11396 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
11398 if (info->emitrelocations)
11400 stub_entry->group->stub_sec->reloc_count
11401 += 1 + (PPC_HA (off) != 0);
11402 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11405 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
11408 if (PPC_HA (off) != 0)
11414 if (PPC_HA (off) != 0)
11417 if (PPC_HA (r2off) != 0)
11419 if (PPC_LO (r2off) != 0)
11423 else if (info->emitrelocations)
11425 stub_entry->group->stub_sec->reloc_count += 1;
11426 stub_entry->group->stub_sec->flags |= SEC_RELOC;
11430 stub_entry->group->stub_sec->size += size;
11434 /* Set up various things so that we can make a list of input sections
11435 for each output section included in the link. Returns -1 on error,
11436 0 when no stubs will be needed, and 1 on success. */
11439 ppc64_elf_setup_section_lists (struct bfd_link_info *info)
11443 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11448 htab->sec_info_arr_size = bfd_get_next_section_id ();
11449 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11450 htab->sec_info = bfd_zmalloc (amt);
11451 if (htab->sec_info == NULL)
11454 /* Set toc_off for com, und, abs and ind sections. */
11455 for (id = 0; id < 3; id++)
11456 htab->sec_info[id].toc_off = TOC_BASE_OFF;
11461 /* Set up for first pass at multitoc partitioning. */
11464 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11466 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11468 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11469 htab->toc_bfd = NULL;
11470 htab->toc_first_sec = NULL;
11473 /* The linker repeatedly calls this function for each TOC input section
11474 and linker generated GOT section. Group input bfds such that the toc
11475 within a group is less than 64k in size. */
11478 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11480 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11481 bfd_vma addr, off, limit;
11486 if (!htab->second_toc_pass)
11488 /* Keep track of the first .toc or .got section for this input bfd. */
11489 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11493 htab->toc_bfd = isec->owner;
11494 htab->toc_first_sec = isec;
11497 addr = isec->output_offset + isec->output_section->vma;
11498 off = addr - htab->toc_curr;
11499 limit = 0x80008000;
11500 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11502 if (off + isec->size > limit)
11504 addr = (htab->toc_first_sec->output_offset
11505 + htab->toc_first_sec->output_section->vma);
11506 htab->toc_curr = addr;
11507 htab->toc_curr &= -TOC_BASE_ALIGN;
11510 /* toc_curr is the base address of this toc group. Set elf_gp
11511 for the input section to be the offset relative to the
11512 output toc base plus 0x8000. Making the input elf_gp an
11513 offset allows us to move the toc as a whole without
11514 recalculating input elf_gp. */
11515 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11516 off += TOC_BASE_OFF;
11518 /* Die if someone uses a linker script that doesn't keep input
11519 file .toc and .got together. */
11521 && elf_gp (isec->owner) != 0
11522 && elf_gp (isec->owner) != off)
11525 elf_gp (isec->owner) = off;
11529 /* During the second pass toc_first_sec points to the start of
11530 a toc group, and toc_curr is used to track the old elf_gp.
11531 We use toc_bfd to ensure we only look at each bfd once. */
11532 if (htab->toc_bfd == isec->owner)
11534 htab->toc_bfd = isec->owner;
11536 if (htab->toc_first_sec == NULL
11537 || htab->toc_curr != elf_gp (isec->owner))
11539 htab->toc_curr = elf_gp (isec->owner);
11540 htab->toc_first_sec = isec;
11542 addr = (htab->toc_first_sec->output_offset
11543 + htab->toc_first_sec->output_section->vma);
11544 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11545 elf_gp (isec->owner) = off;
11550 /* Called via elf_link_hash_traverse to merge GOT entries for global
11554 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11556 if (h->root.type == bfd_link_hash_indirect)
11559 merge_got_entries (&h->got.glist);
11564 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11568 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11570 struct got_entry *gent;
11572 if (h->root.type == bfd_link_hash_indirect)
11575 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11576 if (!gent->is_indirect)
11577 allocate_got (h, (struct bfd_link_info *) inf, gent);
11581 /* Called on the first multitoc pass after the last call to
11582 ppc64_elf_next_toc_section. This function removes duplicate GOT
11586 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11588 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11589 struct bfd *ibfd, *ibfd2;
11590 bfd_boolean done_something;
11592 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11594 if (!htab->do_multi_toc)
11597 /* Merge global sym got entries within a toc group. */
11598 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11600 /* And tlsld_got. */
11601 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11603 struct got_entry *ent, *ent2;
11605 if (!is_ppc64_elf (ibfd))
11608 ent = ppc64_tlsld_got (ibfd);
11609 if (!ent->is_indirect
11610 && ent->got.offset != (bfd_vma) -1)
11612 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
11614 if (!is_ppc64_elf (ibfd2))
11617 ent2 = ppc64_tlsld_got (ibfd2);
11618 if (!ent2->is_indirect
11619 && ent2->got.offset != (bfd_vma) -1
11620 && elf_gp (ibfd2) == elf_gp (ibfd))
11622 ent2->is_indirect = TRUE;
11623 ent2->got.ent = ent;
11629 /* Zap sizes of got sections. */
11630 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11631 htab->elf.irelplt->size -= htab->got_reli_size;
11632 htab->got_reli_size = 0;
11634 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11636 asection *got, *relgot;
11638 if (!is_ppc64_elf (ibfd))
11641 got = ppc64_elf_tdata (ibfd)->got;
11644 got->rawsize = got->size;
11646 relgot = ppc64_elf_tdata (ibfd)->relgot;
11647 relgot->rawsize = relgot->size;
11652 /* Now reallocate the got, local syms first. We don't need to
11653 allocate section contents again since we never increase size. */
11654 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11656 struct got_entry **lgot_ents;
11657 struct got_entry **end_lgot_ents;
11658 struct plt_entry **local_plt;
11659 struct plt_entry **end_local_plt;
11660 unsigned char *lgot_masks;
11661 bfd_size_type locsymcount;
11662 Elf_Internal_Shdr *symtab_hdr;
11665 if (!is_ppc64_elf (ibfd))
11668 lgot_ents = elf_local_got_ents (ibfd);
11672 symtab_hdr = &elf_symtab_hdr (ibfd);
11673 locsymcount = symtab_hdr->sh_info;
11674 end_lgot_ents = lgot_ents + locsymcount;
11675 local_plt = (struct plt_entry **) end_lgot_ents;
11676 end_local_plt = local_plt + locsymcount;
11677 lgot_masks = (unsigned char *) end_local_plt;
11678 s = ppc64_elf_tdata (ibfd)->got;
11679 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11681 struct got_entry *ent;
11683 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11685 unsigned int ent_size = 8;
11686 unsigned int rel_size = sizeof (Elf64_External_Rela);
11688 ent->got.offset = s->size;
11689 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11694 s->size += ent_size;
11695 if ((*lgot_masks & PLT_IFUNC) != 0)
11697 htab->elf.irelplt->size += rel_size;
11698 htab->got_reli_size += rel_size;
11700 else if (bfd_link_pic (info))
11702 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11703 srel->size += rel_size;
11709 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11711 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11713 struct got_entry *ent;
11715 if (!is_ppc64_elf (ibfd))
11718 ent = ppc64_tlsld_got (ibfd);
11719 if (!ent->is_indirect
11720 && ent->got.offset != (bfd_vma) -1)
11722 asection *s = ppc64_elf_tdata (ibfd)->got;
11723 ent->got.offset = s->size;
11725 if (bfd_link_pic (info))
11727 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11728 srel->size += sizeof (Elf64_External_Rela);
11733 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11734 if (!done_something)
11735 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
11739 if (!is_ppc64_elf (ibfd))
11742 got = ppc64_elf_tdata (ibfd)->got;
11745 done_something = got->rawsize != got->size;
11746 if (done_something)
11751 if (done_something)
11752 (*htab->params->layout_sections_again) ();
11754 /* Set up for second pass over toc sections to recalculate elf_gp
11755 on input sections. */
11756 htab->toc_bfd = NULL;
11757 htab->toc_first_sec = NULL;
11758 htab->second_toc_pass = TRUE;
11759 return done_something;
11762 /* Called after second pass of multitoc partitioning. */
11765 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11767 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11769 /* After the second pass, toc_curr tracks the TOC offset used
11770 for code sections below in ppc64_elf_next_input_section. */
11771 htab->toc_curr = TOC_BASE_OFF;
11774 /* No toc references were found in ISEC. If the code in ISEC makes no
11775 calls, then there's no need to use toc adjusting stubs when branching
11776 into ISEC. Actually, indirect calls from ISEC are OK as they will
11777 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11778 needed, and 2 if a cyclical call-graph was found but no other reason
11779 for a stub was detected. If called from the top level, a return of
11780 2 means the same as a return of 0. */
11783 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11787 /* Mark this section as checked. */
11788 isec->call_check_done = 1;
11790 /* We know none of our code bearing sections will need toc stubs. */
11791 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11794 if (isec->size == 0)
11797 if (isec->output_section == NULL)
11801 if (isec->reloc_count != 0)
11803 Elf_Internal_Rela *relstart, *rel;
11804 Elf_Internal_Sym *local_syms;
11805 struct ppc_link_hash_table *htab;
11807 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11808 info->keep_memory);
11809 if (relstart == NULL)
11812 /* Look for branches to outside of this section. */
11814 htab = ppc_hash_table (info);
11818 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11820 enum elf_ppc64_reloc_type r_type;
11821 unsigned long r_symndx;
11822 struct elf_link_hash_entry *h;
11823 struct ppc_link_hash_entry *eh;
11824 Elf_Internal_Sym *sym;
11826 struct _opd_sec_data *opd;
11830 r_type = ELF64_R_TYPE (rel->r_info);
11831 if (r_type != R_PPC64_REL24
11832 && r_type != R_PPC64_REL14
11833 && r_type != R_PPC64_REL14_BRTAKEN
11834 && r_type != R_PPC64_REL14_BRNTAKEN)
11837 r_symndx = ELF64_R_SYM (rel->r_info);
11838 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11845 /* Calls to dynamic lib functions go through a plt call stub
11847 eh = (struct ppc_link_hash_entry *) h;
11849 && (eh->elf.plt.plist != NULL
11851 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11857 if (sym_sec == NULL)
11858 /* Ignore other undefined symbols. */
11861 /* Assume branches to other sections not included in the
11862 link need stubs too, to cover -R and absolute syms. */
11863 if (sym_sec->output_section == NULL)
11870 sym_value = sym->st_value;
11873 if (h->root.type != bfd_link_hash_defined
11874 && h->root.type != bfd_link_hash_defweak)
11876 sym_value = h->root.u.def.value;
11878 sym_value += rel->r_addend;
11880 /* If this branch reloc uses an opd sym, find the code section. */
11881 opd = get_opd_info (sym_sec);
11884 if (h == NULL && opd->adjust != NULL)
11888 adjust = opd->adjust[OPD_NDX (sym_value)];
11890 /* Assume deleted functions won't ever be called. */
11892 sym_value += adjust;
11895 dest = opd_entry_value (sym_sec, sym_value,
11896 &sym_sec, NULL, FALSE);
11897 if (dest == (bfd_vma) -1)
11902 + sym_sec->output_offset
11903 + sym_sec->output_section->vma);
11905 /* Ignore branch to self. */
11906 if (sym_sec == isec)
11909 /* If the called function uses the toc, we need a stub. */
11910 if (sym_sec->has_toc_reloc
11911 || sym_sec->makes_toc_func_call)
11917 /* Assume any branch that needs a long branch stub might in fact
11918 need a plt_branch stub. A plt_branch stub uses r2. */
11919 else if (dest - (isec->output_offset
11920 + isec->output_section->vma
11921 + rel->r_offset) + (1 << 25)
11922 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11930 /* If calling back to a section in the process of being
11931 tested, we can't say for sure that no toc adjusting stubs
11932 are needed, so don't return zero. */
11933 else if (sym_sec->call_check_in_progress)
11936 /* Branches to another section that itself doesn't have any TOC
11937 references are OK. Recursively call ourselves to check. */
11938 else if (!sym_sec->call_check_done)
11942 /* Mark current section as indeterminate, so that other
11943 sections that call back to current won't be marked as
11945 isec->call_check_in_progress = 1;
11946 recur = toc_adjusting_stub_needed (info, sym_sec);
11947 isec->call_check_in_progress = 0;
11958 if (local_syms != NULL
11959 && (elf_symtab_hdr (isec->owner).contents
11960 != (unsigned char *) local_syms))
11962 if (elf_section_data (isec)->relocs != relstart)
11967 && isec->map_head.s != NULL
11968 && (strcmp (isec->output_section->name, ".init") == 0
11969 || strcmp (isec->output_section->name, ".fini") == 0))
11971 if (isec->map_head.s->has_toc_reloc
11972 || isec->map_head.s->makes_toc_func_call)
11974 else if (!isec->map_head.s->call_check_done)
11977 isec->call_check_in_progress = 1;
11978 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11979 isec->call_check_in_progress = 0;
11986 isec->makes_toc_func_call = 1;
11991 /* The linker repeatedly calls this function for each input section,
11992 in the order that input sections are linked into output sections.
11993 Build lists of input sections to determine groupings between which
11994 we may insert linker stubs. */
11997 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11999 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12004 if ((isec->output_section->flags & SEC_CODE) != 0
12005 && isec->output_section->id < htab->sec_info_arr_size)
12007 /* This happens to make the list in reverse order,
12008 which is what we want. */
12009 htab->sec_info[isec->id].u.list
12010 = htab->sec_info[isec->output_section->id].u.list;
12011 htab->sec_info[isec->output_section->id].u.list = isec;
12014 if (htab->multi_toc_needed)
12016 /* Analyse sections that aren't already flagged as needing a
12017 valid toc pointer. Exclude .fixup for the linux kernel.
12018 .fixup contains branches, but only back to the function that
12019 hit an exception. */
12020 if (!(isec->has_toc_reloc
12021 || (isec->flags & SEC_CODE) == 0
12022 || strcmp (isec->name, ".fixup") == 0
12023 || isec->call_check_done))
12025 if (toc_adjusting_stub_needed (info, isec) < 0)
12028 /* Make all sections use the TOC assigned for this object file.
12029 This will be wrong for pasted sections; We fix that in
12030 check_pasted_section(). */
12031 if (elf_gp (isec->owner) != 0)
12032 htab->toc_curr = elf_gp (isec->owner);
12035 htab->sec_info[isec->id].toc_off = htab->toc_curr;
12039 /* Check that all .init and .fini sections use the same toc, if they
12040 have toc relocs. */
12043 check_pasted_section (struct bfd_link_info *info, const char *name)
12045 asection *o = bfd_get_section_by_name (info->output_bfd, name);
12049 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12050 bfd_vma toc_off = 0;
12053 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12054 if (i->has_toc_reloc)
12057 toc_off = htab->sec_info[i->id].toc_off;
12058 else if (toc_off != htab->sec_info[i->id].toc_off)
12063 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12064 if (i->makes_toc_func_call)
12066 toc_off = htab->sec_info[i->id].toc_off;
12070 /* Make sure the whole pasted function uses the same toc offset. */
12072 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12073 htab->sec_info[i->id].toc_off = toc_off;
12079 ppc64_elf_check_init_fini (struct bfd_link_info *info)
12081 return (check_pasted_section (info, ".init")
12082 & check_pasted_section (info, ".fini"));
12085 /* See whether we can group stub sections together. Grouping stub
12086 sections may result in fewer stubs. More importantly, we need to
12087 put all .init* and .fini* stubs at the beginning of the .init or
12088 .fini output sections respectively, because glibc splits the
12089 _init and _fini functions into multiple parts. Putting a stub in
12090 the middle of a function is not a good idea. */
12093 group_sections (struct bfd_link_info *info,
12094 bfd_size_type stub_group_size,
12095 bfd_boolean stubs_always_before_branch)
12097 struct ppc_link_hash_table *htab;
12099 bfd_boolean suppress_size_errors;
12101 htab = ppc_hash_table (info);
12105 suppress_size_errors = FALSE;
12106 if (stub_group_size == 1)
12108 /* Default values. */
12109 if (stubs_always_before_branch)
12110 stub_group_size = 0x1e00000;
12112 stub_group_size = 0x1c00000;
12113 suppress_size_errors = TRUE;
12116 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
12120 if (osec->id >= htab->sec_info_arr_size)
12123 tail = htab->sec_info[osec->id].u.list;
12124 while (tail != NULL)
12128 bfd_size_type total;
12129 bfd_boolean big_sec;
12131 struct map_stub *group;
12132 bfd_size_type group_size;
12135 total = tail->size;
12136 group_size = (ppc64_elf_section_data (tail) != NULL
12137 && ppc64_elf_section_data (tail)->has_14bit_branch
12138 ? stub_group_size >> 10 : stub_group_size);
12140 big_sec = total > group_size;
12141 if (big_sec && !suppress_size_errors)
12142 /* xgettext:c-format */
12143 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12144 tail->owner, tail);
12145 curr_toc = htab->sec_info[tail->id].toc_off;
12147 while ((prev = htab->sec_info[curr->id].u.list) != NULL
12148 && ((total += curr->output_offset - prev->output_offset)
12149 < (ppc64_elf_section_data (prev) != NULL
12150 && ppc64_elf_section_data (prev)->has_14bit_branch
12151 ? (group_size = stub_group_size >> 10) : group_size))
12152 && htab->sec_info[prev->id].toc_off == curr_toc)
12155 /* OK, the size from the start of CURR to the end is less
12156 than group_size and thus can be handled by one stub
12157 section. (or the tail section is itself larger than
12158 group_size, in which case we may be toast.) We should
12159 really be keeping track of the total size of stubs added
12160 here, as stubs contribute to the final output section
12161 size. That's a little tricky, and this way will only
12162 break if stubs added make the total size more than 2^25,
12163 ie. for the default stub_group_size, if stubs total more
12164 than 2097152 bytes, or nearly 75000 plt call stubs. */
12165 group = bfd_alloc (curr->owner, sizeof (*group));
12168 group->link_sec = curr;
12169 group->stub_sec = NULL;
12170 group->needs_save_res = 0;
12171 group->next = htab->group;
12172 htab->group = group;
12175 prev = htab->sec_info[tail->id].u.list;
12176 /* Set up this stub group. */
12177 htab->sec_info[tail->id].u.group = group;
12179 while (tail != curr && (tail = prev) != NULL);
12181 /* But wait, there's more! Input sections up to group_size
12182 bytes before the stub section can be handled by it too.
12183 Don't do this if we have a really large section after the
12184 stubs, as adding more stubs increases the chance that
12185 branches may not reach into the stub section. */
12186 if (!stubs_always_before_branch && !big_sec)
12189 while (prev != NULL
12190 && ((total += tail->output_offset - prev->output_offset)
12191 < (ppc64_elf_section_data (prev) != NULL
12192 && ppc64_elf_section_data (prev)->has_14bit_branch
12193 ? (group_size = stub_group_size >> 10) : group_size))
12194 && htab->sec_info[prev->id].toc_off == curr_toc)
12197 prev = htab->sec_info[tail->id].u.list;
12198 htab->sec_info[tail->id].u.group = group;
12207 static const unsigned char glink_eh_frame_cie[] =
12209 0, 0, 0, 16, /* length. */
12210 0, 0, 0, 0, /* id. */
12211 1, /* CIE version. */
12212 'z', 'R', 0, /* Augmentation string. */
12213 4, /* Code alignment. */
12214 0x78, /* Data alignment. */
12216 1, /* Augmentation size. */
12217 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
12218 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
12222 /* Stripping output sections is normally done before dynamic section
12223 symbols have been allocated. This function is called later, and
12224 handles cases like htab->brlt which is mapped to its own output
12228 maybe_strip_output (struct bfd_link_info *info, asection *isec)
12230 if (isec->size == 0
12231 && isec->output_section->size == 0
12232 && !(isec->output_section->flags & SEC_KEEP)
12233 && !bfd_section_removed_from_list (info->output_bfd,
12234 isec->output_section)
12235 && elf_section_data (isec->output_section)->dynindx == 0)
12237 isec->output_section->flags |= SEC_EXCLUDE;
12238 bfd_section_list_remove (info->output_bfd, isec->output_section);
12239 info->output_bfd->section_count--;
12243 /* Determine and set the size of the stub section for a final link.
12245 The basic idea here is to examine all the relocations looking for
12246 PC-relative calls to a target that is unreachable with a "bl"
12250 ppc64_elf_size_stubs (struct bfd_link_info *info)
12252 bfd_size_type stub_group_size;
12253 bfd_boolean stubs_always_before_branch;
12254 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12259 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
12260 htab->params->plt_thread_safe = 1;
12261 if (!htab->opd_abi)
12262 htab->params->plt_thread_safe = 0;
12263 else if (htab->params->plt_thread_safe == -1)
12265 static const char *const thread_starter[] =
12269 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12271 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12272 "mq_notify", "create_timer",
12277 "GOMP_parallel_start",
12278 "GOMP_parallel_loop_static",
12279 "GOMP_parallel_loop_static_start",
12280 "GOMP_parallel_loop_dynamic",
12281 "GOMP_parallel_loop_dynamic_start",
12282 "GOMP_parallel_loop_guided",
12283 "GOMP_parallel_loop_guided_start",
12284 "GOMP_parallel_loop_runtime",
12285 "GOMP_parallel_loop_runtime_start",
12286 "GOMP_parallel_sections",
12287 "GOMP_parallel_sections_start",
12293 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
12295 struct elf_link_hash_entry *h;
12296 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12297 FALSE, FALSE, TRUE);
12298 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12299 if (htab->params->plt_thread_safe)
12303 stubs_always_before_branch = htab->params->group_size < 0;
12304 if (htab->params->group_size < 0)
12305 stub_group_size = -htab->params->group_size;
12307 stub_group_size = htab->params->group_size;
12309 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12312 #define STUB_SHRINK_ITER 20
12313 /* Loop until no stubs added. After iteration 20 of this loop we may
12314 exit on a stub section shrinking. This is to break out of a
12315 pathological case where adding stubs on one iteration decreases
12316 section gaps (perhaps due to alignment), which then requires
12317 fewer or smaller stubs on the next iteration. */
12322 unsigned int bfd_indx;
12323 struct map_stub *group;
12324 asection *stub_sec;
12326 htab->stub_iteration += 1;
12328 for (input_bfd = info->input_bfds, bfd_indx = 0;
12330 input_bfd = input_bfd->link.next, bfd_indx++)
12332 Elf_Internal_Shdr *symtab_hdr;
12334 Elf_Internal_Sym *local_syms = NULL;
12336 if (!is_ppc64_elf (input_bfd))
12339 /* We'll need the symbol table in a second. */
12340 symtab_hdr = &elf_symtab_hdr (input_bfd);
12341 if (symtab_hdr->sh_info == 0)
12344 /* Walk over each section attached to the input bfd. */
12345 for (section = input_bfd->sections;
12347 section = section->next)
12349 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
12351 /* If there aren't any relocs, then there's nothing more
12353 if ((section->flags & SEC_RELOC) == 0
12354 || (section->flags & SEC_ALLOC) == 0
12355 || (section->flags & SEC_LOAD) == 0
12356 || (section->flags & SEC_CODE) == 0
12357 || section->reloc_count == 0)
12360 /* If this section is a link-once section that will be
12361 discarded, then don't create any stubs. */
12362 if (section->output_section == NULL
12363 || section->output_section->owner != info->output_bfd)
12366 /* Get the relocs. */
12368 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
12369 info->keep_memory);
12370 if (internal_relocs == NULL)
12371 goto error_ret_free_local;
12373 /* Now examine each relocation. */
12374 irela = internal_relocs;
12375 irelaend = irela + section->reloc_count;
12376 for (; irela < irelaend; irela++)
12378 enum elf_ppc64_reloc_type r_type;
12379 unsigned int r_indx;
12380 enum ppc_stub_type stub_type;
12381 struct ppc_stub_hash_entry *stub_entry;
12382 asection *sym_sec, *code_sec;
12383 bfd_vma sym_value, code_value;
12384 bfd_vma destination;
12385 unsigned long local_off;
12386 bfd_boolean ok_dest;
12387 struct ppc_link_hash_entry *hash;
12388 struct ppc_link_hash_entry *fdh;
12389 struct elf_link_hash_entry *h;
12390 Elf_Internal_Sym *sym;
12392 const asection *id_sec;
12393 struct _opd_sec_data *opd;
12394 struct plt_entry *plt_ent;
12396 r_type = ELF64_R_TYPE (irela->r_info);
12397 r_indx = ELF64_R_SYM (irela->r_info);
12399 if (r_type >= R_PPC64_max)
12401 bfd_set_error (bfd_error_bad_value);
12402 goto error_ret_free_internal;
12405 /* Only look for stubs on branch instructions. */
12406 if (r_type != R_PPC64_REL24
12407 && r_type != R_PPC64_REL14
12408 && r_type != R_PPC64_REL14_BRTAKEN
12409 && r_type != R_PPC64_REL14_BRNTAKEN)
12412 /* Now determine the call target, its name, value,
12414 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12415 r_indx, input_bfd))
12416 goto error_ret_free_internal;
12417 hash = (struct ppc_link_hash_entry *) h;
12424 sym_value = sym->st_value;
12425 if (sym_sec != NULL
12426 && sym_sec->output_section != NULL)
12429 else if (hash->elf.root.type == bfd_link_hash_defined
12430 || hash->elf.root.type == bfd_link_hash_defweak)
12432 sym_value = hash->elf.root.u.def.value;
12433 if (sym_sec->output_section != NULL)
12436 else if (hash->elf.root.type == bfd_link_hash_undefweak
12437 || hash->elf.root.type == bfd_link_hash_undefined)
12439 /* Recognise an old ABI func code entry sym, and
12440 use the func descriptor sym instead if it is
12442 if (hash->elf.root.root.string[0] == '.'
12443 && hash->oh != NULL)
12445 fdh = ppc_follow_link (hash->oh);
12446 if (fdh->elf.root.type == bfd_link_hash_defined
12447 || fdh->elf.root.type == bfd_link_hash_defweak)
12449 sym_sec = fdh->elf.root.u.def.section;
12450 sym_value = fdh->elf.root.u.def.value;
12451 if (sym_sec->output_section != NULL)
12460 bfd_set_error (bfd_error_bad_value);
12461 goto error_ret_free_internal;
12468 sym_value += irela->r_addend;
12469 destination = (sym_value
12470 + sym_sec->output_offset
12471 + sym_sec->output_section->vma);
12472 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12477 code_sec = sym_sec;
12478 code_value = sym_value;
12479 opd = get_opd_info (sym_sec);
12484 if (hash == NULL && opd->adjust != NULL)
12486 long adjust = opd->adjust[OPD_NDX (sym_value)];
12489 code_value += adjust;
12490 sym_value += adjust;
12492 dest = opd_entry_value (sym_sec, sym_value,
12493 &code_sec, &code_value, FALSE);
12494 if (dest != (bfd_vma) -1)
12496 destination = dest;
12499 /* Fixup old ABI sym to point at code
12501 hash->elf.root.type = bfd_link_hash_defweak;
12502 hash->elf.root.u.def.section = code_sec;
12503 hash->elf.root.u.def.value = code_value;
12508 /* Determine what (if any) linker stub is needed. */
12510 stub_type = ppc_type_of_stub (section, irela, &hash,
12511 &plt_ent, destination,
12514 if (stub_type != ppc_stub_plt_call)
12516 /* Check whether we need a TOC adjusting stub.
12517 Since the linker pastes together pieces from
12518 different object files when creating the
12519 _init and _fini functions, it may be that a
12520 call to what looks like a local sym is in
12521 fact a call needing a TOC adjustment. */
12522 if (code_sec != NULL
12523 && code_sec->output_section != NULL
12524 && (htab->sec_info[code_sec->id].toc_off
12525 != htab->sec_info[section->id].toc_off)
12526 && (code_sec->has_toc_reloc
12527 || code_sec->makes_toc_func_call))
12528 stub_type = ppc_stub_long_branch_r2off;
12531 if (stub_type == ppc_stub_none)
12534 /* __tls_get_addr calls might be eliminated. */
12535 if (stub_type != ppc_stub_plt_call
12537 && (hash == htab->tls_get_addr
12538 || hash == htab->tls_get_addr_fd)
12539 && section->has_tls_reloc
12540 && irela != internal_relocs)
12542 /* Get tls info. */
12543 unsigned char *tls_mask;
12545 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12546 irela - 1, input_bfd))
12547 goto error_ret_free_internal;
12548 if (*tls_mask != 0)
12552 if (stub_type == ppc_stub_plt_call
12553 && irela + 1 < irelaend
12554 && irela[1].r_offset == irela->r_offset + 4
12555 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12557 if (!tocsave_find (htab, INSERT,
12558 &local_syms, irela + 1, input_bfd))
12559 goto error_ret_free_internal;
12561 else if (stub_type == ppc_stub_plt_call)
12562 stub_type = ppc_stub_plt_call_r2save;
12564 /* Support for grouping stub sections. */
12565 id_sec = htab->sec_info[section->id].u.group->link_sec;
12567 /* Get the name of this stub. */
12568 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12570 goto error_ret_free_internal;
12572 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12573 stub_name, FALSE, FALSE);
12574 if (stub_entry != NULL)
12576 /* The proper stub has already been created. */
12578 if (stub_type == ppc_stub_plt_call_r2save)
12579 stub_entry->stub_type = stub_type;
12583 stub_entry = ppc_add_stub (stub_name, section, info);
12584 if (stub_entry == NULL)
12587 error_ret_free_internal:
12588 if (elf_section_data (section)->relocs == NULL)
12589 free (internal_relocs);
12590 error_ret_free_local:
12591 if (local_syms != NULL
12592 && (symtab_hdr->contents
12593 != (unsigned char *) local_syms))
12598 stub_entry->stub_type = stub_type;
12599 if (stub_type != ppc_stub_plt_call
12600 && stub_type != ppc_stub_plt_call_r2save)
12602 stub_entry->target_value = code_value;
12603 stub_entry->target_section = code_sec;
12607 stub_entry->target_value = sym_value;
12608 stub_entry->target_section = sym_sec;
12610 stub_entry->h = hash;
12611 stub_entry->plt_ent = plt_ent;
12612 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12614 if (stub_entry->h != NULL)
12615 htab->stub_globals += 1;
12618 /* We're done with the internal relocs, free them. */
12619 if (elf_section_data (section)->relocs != internal_relocs)
12620 free (internal_relocs);
12623 if (local_syms != NULL
12624 && symtab_hdr->contents != (unsigned char *) local_syms)
12626 if (!info->keep_memory)
12629 symtab_hdr->contents = (unsigned char *) local_syms;
12633 /* We may have added some stubs. Find out the new size of the
12635 for (stub_sec = htab->params->stub_bfd->sections;
12637 stub_sec = stub_sec->next)
12638 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12640 if (htab->stub_iteration <= STUB_SHRINK_ITER
12641 || stub_sec->rawsize < stub_sec->size)
12642 /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */
12643 stub_sec->rawsize = stub_sec->size;
12644 stub_sec->size = 0;
12645 stub_sec->reloc_count = 0;
12646 stub_sec->flags &= ~SEC_RELOC;
12649 htab->brlt->size = 0;
12650 htab->brlt->reloc_count = 0;
12651 htab->brlt->flags &= ~SEC_RELOC;
12652 if (htab->relbrlt != NULL)
12653 htab->relbrlt->size = 0;
12655 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12657 for (group = htab->group; group != NULL; group = group->next)
12658 if (group->needs_save_res)
12659 group->stub_sec->size += htab->sfpr->size;
12661 if (info->emitrelocations
12662 && htab->glink != NULL && htab->glink->size != 0)
12664 htab->glink->reloc_count = 1;
12665 htab->glink->flags |= SEC_RELOC;
12668 if (htab->glink_eh_frame != NULL
12669 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12670 && htab->glink_eh_frame->output_section->size != 0)
12672 size_t size = 0, align;
12674 for (stub_sec = htab->params->stub_bfd->sections;
12676 stub_sec = stub_sec->next)
12677 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12679 if (htab->glink != NULL && htab->glink->size != 0)
12682 size += sizeof (glink_eh_frame_cie);
12684 align <<= htab->glink_eh_frame->output_section->alignment_power;
12686 size = (size + align) & ~align;
12687 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12688 htab->glink_eh_frame->size = size;
12691 if (htab->params->plt_stub_align != 0)
12692 for (stub_sec = htab->params->stub_bfd->sections;
12694 stub_sec = stub_sec->next)
12695 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12696 stub_sec->size = ((stub_sec->size
12697 + (1 << htab->params->plt_stub_align) - 1)
12698 & -(1 << htab->params->plt_stub_align));
12700 for (stub_sec = htab->params->stub_bfd->sections;
12702 stub_sec = stub_sec->next)
12703 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12704 && stub_sec->rawsize != stub_sec->size
12705 && (htab->stub_iteration <= STUB_SHRINK_ITER
12706 || stub_sec->rawsize < stub_sec->size))
12709 if (stub_sec == NULL
12710 && (htab->glink_eh_frame == NULL
12711 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12714 /* Ask the linker to do its stuff. */
12715 (*htab->params->layout_sections_again) ();
12718 if (htab->glink_eh_frame != NULL
12719 && htab->glink_eh_frame->size != 0)
12722 bfd_byte *p, *last_fde;
12723 size_t last_fde_len, size, align, pad;
12724 asection *stub_sec;
12726 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12729 htab->glink_eh_frame->contents = p;
12732 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12733 /* CIE length (rewrite in case little-endian). */
12734 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12735 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12736 p += sizeof (glink_eh_frame_cie);
12738 for (stub_sec = htab->params->stub_bfd->sections;
12740 stub_sec = stub_sec->next)
12741 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12746 bfd_put_32 (htab->elf.dynobj, 20, p);
12749 val = p - htab->glink_eh_frame->contents;
12750 bfd_put_32 (htab->elf.dynobj, val, p);
12752 /* Offset to stub section, written later. */
12754 /* stub section size. */
12755 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12757 /* Augmentation. */
12762 if (htab->glink != NULL && htab->glink->size != 0)
12767 bfd_put_32 (htab->elf.dynobj, 20, p);
12770 val = p - htab->glink_eh_frame->contents;
12771 bfd_put_32 (htab->elf.dynobj, val, p);
12773 /* Offset to .glink, written later. */
12776 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12778 /* Augmentation. */
12781 *p++ = DW_CFA_advance_loc + 1;
12782 *p++ = DW_CFA_register;
12784 *p++ = htab->opd_abi ? 12 : 0;
12785 *p++ = DW_CFA_advance_loc + 4;
12786 *p++ = DW_CFA_restore_extended;
12789 /* Subsume any padding into the last FDE if user .eh_frame
12790 sections are aligned more than glink_eh_frame. Otherwise any
12791 zero padding will be seen as a terminator. */
12792 size = p - htab->glink_eh_frame->contents;
12794 align <<= htab->glink_eh_frame->output_section->alignment_power;
12796 pad = ((size + align) & ~align) - size;
12797 htab->glink_eh_frame->size = size + pad;
12798 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12801 maybe_strip_output (info, htab->brlt);
12802 if (htab->glink_eh_frame != NULL)
12803 maybe_strip_output (info, htab->glink_eh_frame);
12808 /* Called after we have determined section placement. If sections
12809 move, we'll be called again. Provide a value for TOCstart. */
12812 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12815 bfd_vma TOCstart, adjust;
12819 struct elf_link_hash_entry *h;
12820 struct elf_link_hash_table *htab = elf_hash_table (info);
12822 if (is_elf_hash_table (htab)
12823 && htab->hgot != NULL)
12827 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12828 if (is_elf_hash_table (htab))
12832 && h->root.type == bfd_link_hash_defined
12833 && !h->root.linker_def
12834 && (!is_elf_hash_table (htab)
12835 || h->def_regular))
12837 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12838 + h->root.u.def.section->output_offset
12839 + h->root.u.def.section->output_section->vma);
12840 _bfd_set_gp_value (obfd, TOCstart);
12845 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12846 order. The TOC starts where the first of these sections starts. */
12847 s = bfd_get_section_by_name (obfd, ".got");
12848 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12849 s = bfd_get_section_by_name (obfd, ".toc");
12850 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12851 s = bfd_get_section_by_name (obfd, ".tocbss");
12852 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12853 s = bfd_get_section_by_name (obfd, ".plt");
12854 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12856 /* This may happen for
12857 o references to TOC base (SYM@toc / TOC[tc0]) without a
12859 o bad linker script
12860 o --gc-sections and empty TOC sections
12862 FIXME: Warn user? */
12864 /* Look for a likely section. We probably won't even be
12866 for (s = obfd->sections; s != NULL; s = s->next)
12867 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12869 == (SEC_ALLOC | SEC_SMALL_DATA))
12872 for (s = obfd->sections; s != NULL; s = s->next)
12873 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12874 == (SEC_ALLOC | SEC_SMALL_DATA))
12877 for (s = obfd->sections; s != NULL; s = s->next)
12878 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12882 for (s = obfd->sections; s != NULL; s = s->next)
12883 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12889 TOCstart = s->output_section->vma + s->output_offset;
12891 /* Force alignment. */
12892 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12893 TOCstart -= adjust;
12894 _bfd_set_gp_value (obfd, TOCstart);
12896 if (info != NULL && s != NULL)
12898 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12902 if (htab->elf.hgot != NULL)
12904 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
12905 htab->elf.hgot->root.u.def.section = s;
12910 struct bfd_link_hash_entry *bh = NULL;
12911 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12912 s, TOC_BASE_OFF - adjust,
12913 NULL, FALSE, FALSE, &bh);
12919 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12920 write out any global entry stubs. */
12923 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12925 struct bfd_link_info *info;
12926 struct ppc_link_hash_table *htab;
12927 struct plt_entry *pent;
12930 if (h->root.type == bfd_link_hash_indirect)
12933 if (!h->pointer_equality_needed)
12936 if (h->def_regular)
12940 htab = ppc_hash_table (info);
12945 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12946 if (pent->plt.offset != (bfd_vma) -1
12947 && pent->addend == 0)
12953 p = s->contents + h->root.u.def.value;
12954 plt = htab->elf.splt;
12955 if (!htab->elf.dynamic_sections_created
12956 || h->dynindx == -1)
12957 plt = htab->elf.iplt;
12958 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12959 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12961 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12963 info->callbacks->einfo
12964 (_("%P: linkage table error against `%T'\n"),
12965 h->root.root.string);
12966 bfd_set_error (bfd_error_bad_value);
12967 htab->stub_error = TRUE;
12970 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12971 if (htab->params->emit_stub_syms)
12973 size_t len = strlen (h->root.root.string);
12974 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12979 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12980 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12983 if (h->root.type == bfd_link_hash_new)
12985 h->root.type = bfd_link_hash_defined;
12986 h->root.u.def.section = s;
12987 h->root.u.def.value = p - s->contents;
12988 h->ref_regular = 1;
12989 h->def_regular = 1;
12990 h->ref_regular_nonweak = 1;
12991 h->forced_local = 1;
12993 h->root.linker_def = 1;
12997 if (PPC_HA (off) != 0)
12999 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
13002 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
13004 bfd_put_32 (s->owner, MTCTR_R12, p);
13006 bfd_put_32 (s->owner, BCTR, p);
13012 /* Build all the stubs associated with the current output file.
13013 The stubs are kept in a hash table attached to the main linker
13014 hash table. This function is called via gldelf64ppc_finish. */
13017 ppc64_elf_build_stubs (struct bfd_link_info *info,
13020 struct ppc_link_hash_table *htab = ppc_hash_table (info);
13021 struct map_stub *group;
13022 asection *stub_sec;
13024 int stub_sec_count = 0;
13029 /* Allocate memory to hold the linker stubs. */
13030 for (stub_sec = htab->params->stub_bfd->sections;
13032 stub_sec = stub_sec->next)
13033 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
13034 && stub_sec->size != 0)
13036 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
13037 if (stub_sec->contents == NULL)
13039 stub_sec->size = 0;
13042 if (htab->glink != NULL && htab->glink->size != 0)
13047 /* Build the .glink plt call stub. */
13048 if (htab->params->emit_stub_syms)
13050 struct elf_link_hash_entry *h;
13051 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
13052 TRUE, FALSE, FALSE);
13055 if (h->root.type == bfd_link_hash_new)
13057 h->root.type = bfd_link_hash_defined;
13058 h->root.u.def.section = htab->glink;
13059 h->root.u.def.value = 8;
13060 h->ref_regular = 1;
13061 h->def_regular = 1;
13062 h->ref_regular_nonweak = 1;
13063 h->forced_local = 1;
13065 h->root.linker_def = 1;
13068 plt0 = (htab->elf.splt->output_section->vma
13069 + htab->elf.splt->output_offset
13071 if (info->emitrelocations)
13073 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
13076 r->r_offset = (htab->glink->output_offset
13077 + htab->glink->output_section->vma);
13078 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
13079 r->r_addend = plt0;
13081 p = htab->glink->contents;
13082 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
13083 bfd_put_64 (htab->glink->owner, plt0, p);
13087 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
13089 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13091 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13093 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13095 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
13097 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13099 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13101 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
13103 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13105 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
13110 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
13112 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13114 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13116 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13118 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
13120 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
13122 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13124 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13126 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13128 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13130 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13132 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13135 bfd_put_32 (htab->glink->owner, BCTR, p);
13137 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13139 bfd_put_32 (htab->glink->owner, NOP, p);
13143 /* Build the .glink lazy link call stubs. */
13145 while (p < htab->glink->contents + htab->glink->rawsize)
13151 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13156 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13158 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13163 bfd_put_32 (htab->glink->owner,
13164 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
13169 /* Build .glink global entry stubs. */
13170 if (htab->glink->size > htab->glink->rawsize)
13171 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
13174 if (htab->brlt != NULL && htab->brlt->size != 0)
13176 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
13178 if (htab->brlt->contents == NULL)
13181 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
13183 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
13184 htab->relbrlt->size);
13185 if (htab->relbrlt->contents == NULL)
13189 /* Build the stubs as directed by the stub hash table. */
13190 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
13192 for (group = htab->group; group != NULL; group = group->next)
13193 if (group->needs_save_res)
13195 stub_sec = group->stub_sec;
13196 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13198 if (htab->params->emit_stub_syms)
13202 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13203 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13206 stub_sec->size += htab->sfpr->size;
13209 if (htab->relbrlt != NULL)
13210 htab->relbrlt->reloc_count = 0;
13212 if (htab->params->plt_stub_align != 0)
13213 for (stub_sec = htab->params->stub_bfd->sections;
13215 stub_sec = stub_sec->next)
13216 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13217 stub_sec->size = ((stub_sec->size
13218 + (1 << htab->params->plt_stub_align) - 1)
13219 & -(1 << htab->params->plt_stub_align));
13221 for (stub_sec = htab->params->stub_bfd->sections;
13223 stub_sec = stub_sec->next)
13224 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13226 stub_sec_count += 1;
13227 if (stub_sec->rawsize != stub_sec->size
13228 && (htab->stub_iteration <= STUB_SHRINK_ITER
13229 || stub_sec->rawsize < stub_sec->size))
13233 /* Note that the glink_eh_frame check here is not only testing that
13234 the generated size matched the calculated size but also that
13235 bfd_elf_discard_info didn't make any changes to the section. */
13236 if (stub_sec != NULL
13237 || (htab->glink_eh_frame != NULL
13238 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
13240 htab->stub_error = TRUE;
13241 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
13244 if (htab->stub_error)
13249 *stats = bfd_malloc (500);
13250 if (*stats == NULL)
13253 sprintf (*stats, _("linker stubs in %u group%s\n"
13255 " toc adjust %lu\n"
13256 " long branch %lu\n"
13257 " long toc adj %lu\n"
13259 " plt call toc %lu\n"
13260 " global entry %lu"),
13262 stub_sec_count == 1 ? "" : "s",
13263 htab->stub_count[ppc_stub_long_branch - 1],
13264 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13265 htab->stub_count[ppc_stub_plt_branch - 1],
13266 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
13267 htab->stub_count[ppc_stub_plt_call - 1],
13268 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13269 htab->stub_count[ppc_stub_global_entry - 1]);
13274 /* What to do when ld finds relocations against symbols defined in
13275 discarded sections. */
13277 static unsigned int
13278 ppc64_elf_action_discarded (asection *sec)
13280 if (strcmp (".opd", sec->name) == 0)
13283 if (strcmp (".toc", sec->name) == 0)
13286 if (strcmp (".toc1", sec->name) == 0)
13289 return _bfd_elf_default_action_discarded (sec);
13292 /* The RELOCATE_SECTION function is called by the ELF backend linker
13293 to handle the relocations for a section.
13295 The relocs are always passed as Rela structures; if the section
13296 actually uses Rel structures, the r_addend field will always be
13299 This function is responsible for adjust the section contents as
13300 necessary, and (if using Rela relocs and generating a
13301 relocatable output file) adjusting the reloc addend as
13304 This function does not have to worry about setting the reloc
13305 address or the reloc symbol index.
13307 LOCAL_SYMS is a pointer to the swapped in local symbols.
13309 LOCAL_SECTIONS is an array giving the section in the input file
13310 corresponding to the st_shndx field of each local symbol.
13312 The global hash table entry for the global symbols can be found
13313 via elf_sym_hashes (input_bfd).
13315 When generating relocatable output, this function must handle
13316 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13317 going to be the section symbol corresponding to the output
13318 section, which means that the addend must be adjusted
13322 ppc64_elf_relocate_section (bfd *output_bfd,
13323 struct bfd_link_info *info,
13325 asection *input_section,
13326 bfd_byte *contents,
13327 Elf_Internal_Rela *relocs,
13328 Elf_Internal_Sym *local_syms,
13329 asection **local_sections)
13331 struct ppc_link_hash_table *htab;
13332 Elf_Internal_Shdr *symtab_hdr;
13333 struct elf_link_hash_entry **sym_hashes;
13334 Elf_Internal_Rela *rel;
13335 Elf_Internal_Rela *wrel;
13336 Elf_Internal_Rela *relend;
13337 Elf_Internal_Rela outrel;
13339 struct got_entry **local_got_ents;
13341 bfd_boolean ret = TRUE;
13342 bfd_boolean is_opd;
13343 /* Assume 'at' branch hints. */
13344 bfd_boolean is_isa_v2 = TRUE;
13345 bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0);
13347 /* Initialize howto table if needed. */
13348 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
13351 htab = ppc_hash_table (info);
13355 /* Don't relocate stub sections. */
13356 if (input_section->owner == htab->params->stub_bfd)
13359 BFD_ASSERT (is_ppc64_elf (input_bfd));
13361 local_got_ents = elf_local_got_ents (input_bfd);
13362 TOCstart = elf_gp (output_bfd);
13363 symtab_hdr = &elf_symtab_hdr (input_bfd);
13364 sym_hashes = elf_sym_hashes (input_bfd);
13365 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
13367 rel = wrel = relocs;
13368 relend = relocs + input_section->reloc_count;
13369 for (; rel < relend; wrel++, rel++)
13371 enum elf_ppc64_reloc_type r_type;
13373 bfd_reloc_status_type r;
13374 Elf_Internal_Sym *sym;
13376 struct elf_link_hash_entry *h_elf;
13377 struct ppc_link_hash_entry *h;
13378 struct ppc_link_hash_entry *fdh;
13379 const char *sym_name;
13380 unsigned long r_symndx, toc_symndx;
13381 bfd_vma toc_addend;
13382 unsigned char tls_mask, tls_gd, tls_type;
13383 unsigned char sym_type;
13384 bfd_vma relocation;
13385 bfd_boolean unresolved_reloc;
13386 bfd_boolean warned;
13387 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
13390 struct ppc_stub_hash_entry *stub_entry;
13391 bfd_vma max_br_offset;
13393 Elf_Internal_Rela orig_rel;
13394 reloc_howto_type *howto;
13395 struct reloc_howto_struct alt_howto;
13400 r_type = ELF64_R_TYPE (rel->r_info);
13401 r_symndx = ELF64_R_SYM (rel->r_info);
13403 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13404 symbol of the previous ADDR64 reloc. The symbol gives us the
13405 proper TOC base to use. */
13406 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13408 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
13410 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
13416 unresolved_reloc = FALSE;
13419 if (r_symndx < symtab_hdr->sh_info)
13421 /* It's a local symbol. */
13422 struct _opd_sec_data *opd;
13424 sym = local_syms + r_symndx;
13425 sec = local_sections[r_symndx];
13426 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
13427 sym_type = ELF64_ST_TYPE (sym->st_info);
13428 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
13429 opd = get_opd_info (sec);
13430 if (opd != NULL && opd->adjust != NULL)
13432 long adjust = opd->adjust[OPD_NDX (sym->st_value
13438 /* If this is a relocation against the opd section sym
13439 and we have edited .opd, adjust the reloc addend so
13440 that ld -r and ld --emit-relocs output is correct.
13441 If it is a reloc against some other .opd symbol,
13442 then the symbol value will be adjusted later. */
13443 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13444 rel->r_addend += adjust;
13446 relocation += adjust;
13452 bfd_boolean ignored;
13454 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13455 r_symndx, symtab_hdr, sym_hashes,
13456 h_elf, sec, relocation,
13457 unresolved_reloc, warned, ignored);
13458 sym_name = h_elf->root.root.string;
13459 sym_type = h_elf->type;
13461 && sec->owner == output_bfd
13462 && strcmp (sec->name, ".opd") == 0)
13464 /* This is a symbol defined in a linker script. All
13465 such are defined in output sections, even those
13466 defined by simple assignment from a symbol defined in
13467 an input section. Transfer the symbol to an
13468 appropriate input .opd section, so that a branch to
13469 this symbol will be mapped to the location specified
13470 by the opd entry. */
13471 struct bfd_link_order *lo;
13472 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13473 if (lo->type == bfd_indirect_link_order)
13475 asection *isec = lo->u.indirect.section;
13476 if (h_elf->root.u.def.value >= isec->output_offset
13477 && h_elf->root.u.def.value < (isec->output_offset
13480 h_elf->root.u.def.value -= isec->output_offset;
13481 h_elf->root.u.def.section = isec;
13488 h = (struct ppc_link_hash_entry *) h_elf;
13490 if (sec != NULL && discarded_section (sec))
13492 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13493 input_bfd, input_section,
13494 contents + rel->r_offset);
13495 wrel->r_offset = rel->r_offset;
13497 wrel->r_addend = 0;
13499 /* For ld -r, remove relocations in debug sections against
13500 sections defined in discarded sections. Not done for
13501 non-debug to preserve relocs in .eh_frame which the
13502 eh_frame editing code expects to be present. */
13503 if (bfd_link_relocatable (info)
13504 && (input_section->flags & SEC_DEBUGGING))
13510 if (bfd_link_relocatable (info))
13513 if (h != NULL && &h->elf == htab->elf.hgot)
13515 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13516 sec = bfd_abs_section_ptr;
13517 unresolved_reloc = FALSE;
13520 /* TLS optimizations. Replace instruction sequences and relocs
13521 based on information we collected in tls_optimize. We edit
13522 RELOCS so that --emit-relocs will output something sensible
13523 for the final instruction stream. */
13528 tls_mask = h->tls_mask;
13529 else if (local_got_ents != NULL)
13531 struct plt_entry **local_plt = (struct plt_entry **)
13532 (local_got_ents + symtab_hdr->sh_info);
13533 unsigned char *lgot_masks = (unsigned char *)
13534 (local_plt + symtab_hdr->sh_info);
13535 tls_mask = lgot_masks[r_symndx];
13538 && (r_type == R_PPC64_TLS
13539 || r_type == R_PPC64_TLSGD
13540 || r_type == R_PPC64_TLSLD))
13542 /* Check for toc tls entries. */
13543 unsigned char *toc_tls;
13545 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13546 &local_syms, rel, input_bfd))
13550 tls_mask = *toc_tls;
13553 /* Check that tls relocs are used with tls syms, and non-tls
13554 relocs are used with non-tls syms. */
13555 if (r_symndx != STN_UNDEF
13556 && r_type != R_PPC64_NONE
13558 || h->elf.root.type == bfd_link_hash_defined
13559 || h->elf.root.type == bfd_link_hash_defweak)
13560 && (IS_PPC64_TLS_RELOC (r_type)
13561 != (sym_type == STT_TLS
13562 || (sym_type == STT_SECTION
13563 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13566 && (r_type == R_PPC64_TLS
13567 || r_type == R_PPC64_TLSGD
13568 || r_type == R_PPC64_TLSLD))
13569 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13572 info->callbacks->einfo
13573 (!IS_PPC64_TLS_RELOC (r_type)
13574 /* xgettext:c-format */
13575 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13576 /* xgettext:c-format */
13577 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13578 input_bfd, input_section, rel->r_offset,
13579 ppc64_elf_howto_table[r_type]->name,
13583 /* Ensure reloc mapping code below stays sane. */
13584 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13585 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13586 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13587 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13588 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13589 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13590 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13591 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13592 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13593 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13601 case R_PPC64_LO_DS_OPT:
13602 insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset);
13603 if ((insn & (0x3f << 26)) != 58u << 26)
13605 insn += (14u << 26) - (58u << 26);
13606 bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset);
13607 r_type = R_PPC64_TOC16_LO;
13608 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13611 case R_PPC64_TOC16:
13612 case R_PPC64_TOC16_LO:
13613 case R_PPC64_TOC16_DS:
13614 case R_PPC64_TOC16_LO_DS:
13616 /* Check for toc tls entries. */
13617 unsigned char *toc_tls;
13620 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13621 &local_syms, rel, input_bfd);
13627 tls_mask = *toc_tls;
13628 if (r_type == R_PPC64_TOC16_DS
13629 || r_type == R_PPC64_TOC16_LO_DS)
13632 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13637 /* If we found a GD reloc pair, then we might be
13638 doing a GD->IE transition. */
13641 tls_gd = TLS_TPRELGD;
13642 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13645 else if (retval == 3)
13647 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13655 case R_PPC64_GOT_TPREL16_HI:
13656 case R_PPC64_GOT_TPREL16_HA:
13658 && (tls_mask & TLS_TPREL) == 0)
13660 rel->r_offset -= d_offset;
13661 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13662 r_type = R_PPC64_NONE;
13663 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13667 case R_PPC64_GOT_TPREL16_DS:
13668 case R_PPC64_GOT_TPREL16_LO_DS:
13670 && (tls_mask & TLS_TPREL) == 0)
13673 insn = bfd_get_32 (input_bfd,
13674 contents + rel->r_offset - d_offset);
13676 insn |= 0x3c0d0000; /* addis 0,13,0 */
13677 bfd_put_32 (input_bfd, insn,
13678 contents + rel->r_offset - d_offset);
13679 r_type = R_PPC64_TPREL16_HA;
13680 if (toc_symndx != 0)
13682 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13683 rel->r_addend = toc_addend;
13684 /* We changed the symbol. Start over in order to
13685 get h, sym, sec etc. right. */
13689 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13695 && (tls_mask & TLS_TPREL) == 0)
13697 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13698 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13701 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
13702 /* Was PPC64_TLS which sits on insn boundary, now
13703 PPC64_TPREL16_LO which is at low-order half-word. */
13704 rel->r_offset += d_offset;
13705 r_type = R_PPC64_TPREL16_LO;
13706 if (toc_symndx != 0)
13708 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13709 rel->r_addend = toc_addend;
13710 /* We changed the symbol. Start over in order to
13711 get h, sym, sec etc. right. */
13715 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13719 case R_PPC64_GOT_TLSGD16_HI:
13720 case R_PPC64_GOT_TLSGD16_HA:
13721 tls_gd = TLS_TPRELGD;
13722 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13726 case R_PPC64_GOT_TLSLD16_HI:
13727 case R_PPC64_GOT_TLSLD16_HA:
13728 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13731 if ((tls_mask & tls_gd) != 0)
13732 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13733 + R_PPC64_GOT_TPREL16_DS);
13736 rel->r_offset -= d_offset;
13737 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
13738 r_type = R_PPC64_NONE;
13740 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13744 case R_PPC64_GOT_TLSGD16:
13745 case R_PPC64_GOT_TLSGD16_LO:
13746 tls_gd = TLS_TPRELGD;
13747 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13751 case R_PPC64_GOT_TLSLD16:
13752 case R_PPC64_GOT_TLSLD16_LO:
13753 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13755 unsigned int insn1, insn2, insn3;
13759 offset = (bfd_vma) -1;
13760 /* If not using the newer R_PPC64_TLSGD/LD to mark
13761 __tls_get_addr calls, we must trust that the call
13762 stays with its arg setup insns, ie. that the next
13763 reloc is the __tls_get_addr call associated with
13764 the current reloc. Edit both insns. */
13765 if (input_section->has_tls_get_addr_call
13766 && rel + 1 < relend
13767 && branch_reloc_hash_match (input_bfd, rel + 1,
13768 htab->tls_get_addr,
13769 htab->tls_get_addr_fd))
13770 offset = rel[1].r_offset;
13771 /* We read the low GOT_TLS (or TOC16) insn because we
13772 need to keep the destination reg. It may be
13773 something other than the usual r3, and moved to r3
13774 before the call by intervening code. */
13775 insn1 = bfd_get_32 (input_bfd,
13776 contents + rel->r_offset - d_offset);
13777 if ((tls_mask & tls_gd) != 0)
13780 insn1 &= (0x1f << 21) | (0x1f << 16);
13781 insn1 |= 58 << 26; /* ld */
13782 insn2 = 0x7c636a14; /* add 3,3,13 */
13783 if (offset != (bfd_vma) -1)
13784 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13785 if ((tls_mask & TLS_EXPLICIT) == 0)
13786 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13787 + R_PPC64_GOT_TPREL16_DS);
13789 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13790 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13795 insn1 &= 0x1f << 21;
13796 insn1 |= 0x3c0d0000; /* addis r,13,0 */
13797 insn2 = 0x38630000; /* addi 3,3,0 */
13800 /* Was an LD reloc. */
13802 sec = local_sections[toc_symndx];
13804 r_symndx < symtab_hdr->sh_info;
13806 if (local_sections[r_symndx] == sec)
13808 if (r_symndx >= symtab_hdr->sh_info)
13809 r_symndx = STN_UNDEF;
13810 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13811 if (r_symndx != STN_UNDEF)
13812 rel->r_addend -= (local_syms[r_symndx].st_value
13813 + sec->output_offset
13814 + sec->output_section->vma);
13816 else if (toc_symndx != 0)
13818 r_symndx = toc_symndx;
13819 rel->r_addend = toc_addend;
13821 r_type = R_PPC64_TPREL16_HA;
13822 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13823 if (offset != (bfd_vma) -1)
13825 rel[1].r_info = ELF64_R_INFO (r_symndx,
13826 R_PPC64_TPREL16_LO);
13827 rel[1].r_offset = offset + d_offset;
13828 rel[1].r_addend = rel->r_addend;
13831 bfd_put_32 (input_bfd, insn1,
13832 contents + rel->r_offset - d_offset);
13833 if (offset != (bfd_vma) -1)
13835 insn3 = bfd_get_32 (input_bfd,
13836 contents + offset + 4);
13838 || insn3 == CROR_151515 || insn3 == CROR_313131)
13840 rel[1].r_offset += 4;
13841 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
13844 bfd_put_32 (input_bfd, insn2, contents + offset);
13846 if ((tls_mask & tls_gd) == 0
13847 && (tls_gd == 0 || toc_symndx != 0))
13849 /* We changed the symbol. Start over in order
13850 to get h, sym, sec etc. right. */
13856 case R_PPC64_TLSGD:
13857 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13859 unsigned int insn2, insn3;
13860 bfd_vma offset = rel->r_offset;
13862 if ((tls_mask & TLS_TPRELGD) != 0)
13865 r_type = R_PPC64_NONE;
13866 insn2 = 0x7c636a14; /* add 3,3,13 */
13871 if (toc_symndx != 0)
13873 r_symndx = toc_symndx;
13874 rel->r_addend = toc_addend;
13876 r_type = R_PPC64_TPREL16_LO;
13877 rel->r_offset = offset + d_offset;
13878 insn2 = 0x38630000; /* addi 3,3,0 */
13880 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13881 /* Zap the reloc on the _tls_get_addr call too. */
13882 BFD_ASSERT (offset == rel[1].r_offset);
13883 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13884 insn3 = bfd_get_32 (input_bfd,
13885 contents + offset + 4);
13887 || insn3 == CROR_151515 || insn3 == CROR_313131)
13889 rel->r_offset += 4;
13890 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
13893 bfd_put_32 (input_bfd, insn2, contents + offset);
13894 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13899 case R_PPC64_TLSLD:
13900 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13902 unsigned int insn2, insn3;
13903 bfd_vma offset = rel->r_offset;
13906 sec = local_sections[toc_symndx];
13908 r_symndx < symtab_hdr->sh_info;
13910 if (local_sections[r_symndx] == sec)
13912 if (r_symndx >= symtab_hdr->sh_info)
13913 r_symndx = STN_UNDEF;
13914 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13915 if (r_symndx != STN_UNDEF)
13916 rel->r_addend -= (local_syms[r_symndx].st_value
13917 + sec->output_offset
13918 + sec->output_section->vma);
13920 r_type = R_PPC64_TPREL16_LO;
13921 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13922 rel->r_offset = offset + d_offset;
13923 /* Zap the reloc on the _tls_get_addr call too. */
13924 BFD_ASSERT (offset == rel[1].r_offset);
13925 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13926 insn2 = 0x38630000; /* addi 3,3,0 */
13927 insn3 = bfd_get_32 (input_bfd,
13928 contents + offset + 4);
13930 || insn3 == CROR_151515 || insn3 == CROR_313131)
13932 rel->r_offset += 4;
13933 bfd_put_32 (input_bfd, insn2, contents + offset + 4);
13936 bfd_put_32 (input_bfd, insn2, contents + offset);
13941 case R_PPC64_DTPMOD64:
13942 if (rel + 1 < relend
13943 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13944 && rel[1].r_offset == rel->r_offset + 8)
13946 if ((tls_mask & TLS_GD) == 0)
13948 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13949 if ((tls_mask & TLS_TPRELGD) != 0)
13950 r_type = R_PPC64_TPREL64;
13953 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13954 r_type = R_PPC64_NONE;
13956 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13961 if ((tls_mask & TLS_LD) == 0)
13963 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13964 r_type = R_PPC64_NONE;
13965 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13970 case R_PPC64_TPREL64:
13971 if ((tls_mask & TLS_TPREL) == 0)
13973 r_type = R_PPC64_NONE;
13974 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13978 case R_PPC64_ENTRY:
13979 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13980 if (!bfd_link_pic (info)
13981 && !info->traditional_format
13982 && relocation + 0x80008000 <= 0xffffffff)
13984 unsigned int insn1, insn2;
13986 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13987 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13988 if ((insn1 & ~0xfffc) == LD_R2_0R12
13989 && insn2 == ADD_R2_R2_R12)
13991 bfd_put_32 (input_bfd,
13992 LIS_R2 + PPC_HA (relocation),
13993 contents + rel->r_offset);
13994 bfd_put_32 (input_bfd,
13995 ADDI_R2_R2 + PPC_LO (relocation),
13996 contents + rel->r_offset + 4);
14001 relocation -= (rel->r_offset
14002 + input_section->output_offset
14003 + input_section->output_section->vma);
14004 if (relocation + 0x80008000 <= 0xffffffff)
14006 unsigned int insn1, insn2;
14008 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
14009 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
14010 if ((insn1 & ~0xfffc) == LD_R2_0R12
14011 && insn2 == ADD_R2_R2_R12)
14013 bfd_put_32 (input_bfd,
14014 ADDIS_R2_R12 + PPC_HA (relocation),
14015 contents + rel->r_offset);
14016 bfd_put_32 (input_bfd,
14017 ADDI_R2_R2 + PPC_LO (relocation),
14018 contents + rel->r_offset + 4);
14024 case R_PPC64_REL16_HA:
14025 /* If we are generating a non-PIC executable, edit
14026 . 0: addis 2,12,.TOC.-0b@ha
14027 . addi 2,2,.TOC.-0b@l
14028 used by ELFv2 global entry points to set up r2, to
14031 if .TOC. is in range. */
14032 if (!bfd_link_pic (info)
14033 && !info->traditional_format
14035 && rel->r_addend == d_offset
14036 && h != NULL && &h->elf == htab->elf.hgot
14037 && rel + 1 < relend
14038 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
14039 && rel[1].r_offset == rel->r_offset + 4
14040 && rel[1].r_addend == rel->r_addend + 4
14041 && relocation + 0x80008000 <= 0xffffffff)
14043 unsigned int insn1, insn2;
14044 bfd_vma offset = rel->r_offset - d_offset;
14045 insn1 = bfd_get_32 (input_bfd, contents + offset);
14046 insn2 = bfd_get_32 (input_bfd, contents + offset + 4);
14047 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
14048 && (insn2 & 0xffff0000) == ADDI_R2_R2)
14050 r_type = R_PPC64_ADDR16_HA;
14051 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14052 rel->r_addend -= d_offset;
14053 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
14054 rel[1].r_addend -= d_offset + 4;
14055 bfd_put_32 (input_bfd, LIS_R2, contents + offset);
14061 /* Handle other relocations that tweak non-addend part of insn. */
14063 max_br_offset = 1 << 25;
14064 addend = rel->r_addend;
14065 reloc_dest = DEST_NORMAL;
14071 case R_PPC64_TOCSAVE:
14072 if (relocation + addend == (rel->r_offset
14073 + input_section->output_offset
14074 + input_section->output_section->vma)
14075 && tocsave_find (htab, NO_INSERT,
14076 &local_syms, rel, input_bfd))
14078 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14080 || insn == CROR_151515 || insn == CROR_313131)
14081 bfd_put_32 (input_bfd,
14082 STD_R2_0R1 + STK_TOC (htab),
14083 contents + rel->r_offset);
14087 /* Branch taken prediction relocations. */
14088 case R_PPC64_ADDR14_BRTAKEN:
14089 case R_PPC64_REL14_BRTAKEN:
14090 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
14091 /* Fall through. */
14093 /* Branch not taken prediction relocations. */
14094 case R_PPC64_ADDR14_BRNTAKEN:
14095 case R_PPC64_REL14_BRNTAKEN:
14096 insn |= bfd_get_32 (input_bfd,
14097 contents + rel->r_offset) & ~(0x01 << 21);
14098 /* Fall through. */
14100 case R_PPC64_REL14:
14101 max_br_offset = 1 << 15;
14102 /* Fall through. */
14104 case R_PPC64_REL24:
14105 /* Calls to functions with a different TOC, such as calls to
14106 shared objects, need to alter the TOC pointer. This is
14107 done using a linkage stub. A REL24 branching to these
14108 linkage stubs needs to be followed by a nop, as the nop
14109 will be replaced with an instruction to restore the TOC
14114 && h->oh->is_func_descriptor)
14115 fdh = ppc_follow_link (h->oh);
14116 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14118 if (stub_entry != NULL
14119 && (stub_entry->stub_type == ppc_stub_plt_call
14120 || stub_entry->stub_type == ppc_stub_plt_call_r2save
14121 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14122 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
14124 bfd_boolean can_plt_call = FALSE;
14126 /* All of these stubs will modify r2, so there must be a
14127 branch and link followed by a nop. The nop is
14128 replaced by an insn to restore r2. */
14129 if (rel->r_offset + 8 <= input_section->size)
14133 br = bfd_get_32 (input_bfd,
14134 contents + rel->r_offset);
14139 nop = bfd_get_32 (input_bfd,
14140 contents + rel->r_offset + 4);
14142 || nop == CROR_151515 || nop == CROR_313131)
14145 && (h == htab->tls_get_addr_fd
14146 || h == htab->tls_get_addr)
14147 && htab->params->tls_get_addr_opt)
14149 /* Special stub used, leave nop alone. */
14152 bfd_put_32 (input_bfd,
14153 LD_R2_0R1 + STK_TOC (htab),
14154 contents + rel->r_offset + 4);
14155 can_plt_call = TRUE;
14160 if (!can_plt_call && h != NULL)
14162 const char *name = h->elf.root.root.string;
14167 if (strncmp (name, "__libc_start_main", 17) == 0
14168 && (name[17] == 0 || name[17] == '@'))
14170 /* Allow crt1 branch to go via a toc adjusting
14171 stub. Other calls that never return could do
14172 the same, if we could detect such. */
14173 can_plt_call = TRUE;
14179 /* g++ as of 20130507 emits self-calls without a
14180 following nop. This is arguably wrong since we
14181 have conflicting information. On the one hand a
14182 global symbol and on the other a local call
14183 sequence, but don't error for this special case.
14184 It isn't possible to cheaply verify we have
14185 exactly such a call. Allow all calls to the same
14187 asection *code_sec = sec;
14189 if (get_opd_info (sec) != NULL)
14191 bfd_vma off = (relocation + addend
14192 - sec->output_section->vma
14193 - sec->output_offset);
14195 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
14197 if (code_sec == input_section)
14198 can_plt_call = TRUE;
14203 if (stub_entry->stub_type == ppc_stub_plt_call
14204 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14205 info->callbacks->einfo
14206 /* xgettext:c-format */
14207 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14208 "recompile with -fPIC\n"),
14209 input_bfd, input_section, rel->r_offset, sym_name);
14211 info->callbacks->einfo
14212 /* xgettext:c-format */
14213 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14214 "(-mcmodel=small toc adjust stub)\n"),
14215 input_bfd, input_section, rel->r_offset, sym_name);
14217 bfd_set_error (bfd_error_bad_value);
14222 && (stub_entry->stub_type == ppc_stub_plt_call
14223 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
14224 unresolved_reloc = FALSE;
14227 if ((stub_entry == NULL
14228 || stub_entry->stub_type == ppc_stub_long_branch
14229 || stub_entry->stub_type == ppc_stub_plt_branch)
14230 && get_opd_info (sec) != NULL)
14232 /* The branch destination is the value of the opd entry. */
14233 bfd_vma off = (relocation + addend
14234 - sec->output_section->vma
14235 - sec->output_offset);
14236 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
14237 if (dest != (bfd_vma) -1)
14241 reloc_dest = DEST_OPD;
14245 /* If the branch is out of reach we ought to have a long
14247 from = (rel->r_offset
14248 + input_section->output_offset
14249 + input_section->output_section->vma);
14251 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14255 if (stub_entry != NULL
14256 && (stub_entry->stub_type == ppc_stub_long_branch
14257 || stub_entry->stub_type == ppc_stub_plt_branch)
14258 && (r_type == R_PPC64_ADDR14_BRTAKEN
14259 || r_type == R_PPC64_ADDR14_BRNTAKEN
14260 || (relocation + addend - from + max_br_offset
14261 < 2 * max_br_offset)))
14262 /* Don't use the stub if this branch is in range. */
14265 if (stub_entry != NULL)
14267 /* Munge up the value and addend so that we call the stub
14268 rather than the procedure directly. */
14269 asection *stub_sec = stub_entry->group->stub_sec;
14271 if (stub_entry->stub_type == ppc_stub_save_res)
14272 relocation += (stub_sec->output_offset
14273 + stub_sec->output_section->vma
14274 + stub_sec->size - htab->sfpr->size
14275 - htab->sfpr->output_offset
14276 - htab->sfpr->output_section->vma);
14278 relocation = (stub_entry->stub_offset
14279 + stub_sec->output_offset
14280 + stub_sec->output_section->vma);
14282 reloc_dest = DEST_STUB;
14284 if ((stub_entry->stub_type == ppc_stub_plt_call
14285 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14286 && (ALWAYS_EMIT_R2SAVE
14287 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14288 && rel + 1 < relend
14289 && rel[1].r_offset == rel->r_offset + 4
14290 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14298 /* Set 'a' bit. This is 0b00010 in BO field for branch
14299 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14300 for branch on CTR insns (BO == 1a00t or 1a01t). */
14301 if ((insn & (0x14 << 21)) == (0x04 << 21))
14302 insn |= 0x02 << 21;
14303 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14304 insn |= 0x08 << 21;
14310 /* Invert 'y' bit if not the default. */
14311 if ((bfd_signed_vma) (relocation + addend - from) < 0)
14312 insn ^= 0x01 << 21;
14315 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
14318 /* NOP out calls to undefined weak functions.
14319 We can thus call a weak function without first
14320 checking whether the function is defined. */
14322 && h->elf.root.type == bfd_link_hash_undefweak
14323 && h->elf.dynindx == -1
14324 && r_type == R_PPC64_REL24
14328 bfd_put_32 (input_bfd, NOP, contents + rel->r_offset);
14334 /* Set `addend'. */
14339 info->callbacks->einfo
14340 /* xgettext:c-format */
14341 (_("%P: %B: unknown relocation type %d for `%T'\n"),
14342 input_bfd, (int) r_type, sym_name);
14344 bfd_set_error (bfd_error_bad_value);
14350 case R_PPC64_TLSGD:
14351 case R_PPC64_TLSLD:
14352 case R_PPC64_TOCSAVE:
14353 case R_PPC64_GNU_VTINHERIT:
14354 case R_PPC64_GNU_VTENTRY:
14355 case R_PPC64_ENTRY:
14358 /* GOT16 relocations. Like an ADDR16 using the symbol's
14359 address in the GOT as relocation value instead of the
14360 symbol's value itself. Also, create a GOT entry for the
14361 symbol and put the symbol value there. */
14362 case R_PPC64_GOT_TLSGD16:
14363 case R_PPC64_GOT_TLSGD16_LO:
14364 case R_PPC64_GOT_TLSGD16_HI:
14365 case R_PPC64_GOT_TLSGD16_HA:
14366 tls_type = TLS_TLS | TLS_GD;
14369 case R_PPC64_GOT_TLSLD16:
14370 case R_PPC64_GOT_TLSLD16_LO:
14371 case R_PPC64_GOT_TLSLD16_HI:
14372 case R_PPC64_GOT_TLSLD16_HA:
14373 tls_type = TLS_TLS | TLS_LD;
14376 case R_PPC64_GOT_TPREL16_DS:
14377 case R_PPC64_GOT_TPREL16_LO_DS:
14378 case R_PPC64_GOT_TPREL16_HI:
14379 case R_PPC64_GOT_TPREL16_HA:
14380 tls_type = TLS_TLS | TLS_TPREL;
14383 case R_PPC64_GOT_DTPREL16_DS:
14384 case R_PPC64_GOT_DTPREL16_LO_DS:
14385 case R_PPC64_GOT_DTPREL16_HI:
14386 case R_PPC64_GOT_DTPREL16_HA:
14387 tls_type = TLS_TLS | TLS_DTPREL;
14390 case R_PPC64_GOT16:
14391 case R_PPC64_GOT16_LO:
14392 case R_PPC64_GOT16_HI:
14393 case R_PPC64_GOT16_HA:
14394 case R_PPC64_GOT16_DS:
14395 case R_PPC64_GOT16_LO_DS:
14398 /* Relocation is to the entry for this symbol in the global
14403 unsigned long indx = 0;
14404 struct got_entry *ent;
14406 if (tls_type == (TLS_TLS | TLS_LD)
14408 || !h->elf.def_dynamic))
14409 ent = ppc64_tlsld_got (input_bfd);
14414 if (!htab->elf.dynamic_sections_created
14415 || h->elf.dynindx == -1
14416 || SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14417 || (ELF_ST_VISIBILITY (h->elf.other) != STV_DEFAULT
14418 && h->elf.root.type == bfd_link_hash_undefweak))
14419 /* This is actually a static link, or it is a
14420 -Bsymbolic link and the symbol is defined
14421 locally, or the symbol was forced to be local
14422 because of a version file. */
14426 indx = h->elf.dynindx;
14427 unresolved_reloc = FALSE;
14429 ent = h->elf.got.glist;
14433 if (local_got_ents == NULL)
14435 ent = local_got_ents[r_symndx];
14438 for (; ent != NULL; ent = ent->next)
14439 if (ent->addend == orig_rel.r_addend
14440 && ent->owner == input_bfd
14441 && ent->tls_type == tls_type)
14447 if (ent->is_indirect)
14448 ent = ent->got.ent;
14449 offp = &ent->got.offset;
14450 got = ppc64_elf_tdata (ent->owner)->got;
14454 /* The offset must always be a multiple of 8. We use the
14455 least significant bit to record whether we have already
14456 processed this entry. */
14458 if ((off & 1) != 0)
14462 /* Generate relocs for the dynamic linker, except in
14463 the case of TLSLD where we'll use one entry per
14471 ? h->elf.type == STT_GNU_IFUNC
14472 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
14474 relgot = htab->elf.irelplt;
14476 || (bfd_link_pic (info)
14478 || (ELF_ST_VISIBILITY (h->elf.other)
14480 || h->elf.root.type != bfd_link_hash_undefweak
14481 || (tls_type == (TLS_TLS | TLS_LD)
14482 && !h->elf.def_dynamic))))
14483 relgot = ppc64_elf_tdata (ent->owner)->relgot;
14484 if (relgot != NULL)
14486 outrel.r_offset = (got->output_section->vma
14487 + got->output_offset
14489 outrel.r_addend = addend;
14490 if (tls_type & (TLS_LD | TLS_GD))
14492 outrel.r_addend = 0;
14493 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
14494 if (tls_type == (TLS_TLS | TLS_GD))
14496 loc = relgot->contents;
14497 loc += (relgot->reloc_count++
14498 * sizeof (Elf64_External_Rela));
14499 bfd_elf64_swap_reloca_out (output_bfd,
14501 outrel.r_offset += 8;
14502 outrel.r_addend = addend;
14504 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14507 else if (tls_type == (TLS_TLS | TLS_DTPREL))
14508 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
14509 else if (tls_type == (TLS_TLS | TLS_TPREL))
14510 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
14511 else if (indx != 0)
14512 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14516 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14518 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14520 /* Write the .got section contents for the sake
14522 loc = got->contents + off;
14523 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14527 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
14529 outrel.r_addend += relocation;
14530 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
14532 if (htab->elf.tls_sec == NULL)
14533 outrel.r_addend = 0;
14535 outrel.r_addend -= htab->elf.tls_sec->vma;
14538 loc = relgot->contents;
14539 loc += (relgot->reloc_count++
14540 * sizeof (Elf64_External_Rela));
14541 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14544 /* Init the .got section contents here if we're not
14545 emitting a reloc. */
14549 = (htab->params->tls_get_addr_opt
14550 && htab->tls_get_addr_fd != NULL
14551 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
14553 relocation += addend;
14556 if (htab->elf.tls_sec == NULL)
14560 if (tls_type & TLS_LD)
14563 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14564 if ((tls_type & TLS_TPREL)
14565 || (tlsopt && !(tls_type & TLS_DTPREL)))
14566 relocation += DTP_OFFSET - TP_OFFSET;
14569 if (tls_type & (TLS_GD | TLS_LD))
14571 bfd_put_64 (output_bfd, relocation,
14572 got->contents + off + 8);
14573 relocation = !tlsopt;
14576 bfd_put_64 (output_bfd, relocation,
14577 got->contents + off);
14581 if (off >= (bfd_vma) -2)
14584 relocation = got->output_section->vma + got->output_offset + off;
14585 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
14589 case R_PPC64_PLT16_HA:
14590 case R_PPC64_PLT16_HI:
14591 case R_PPC64_PLT16_LO:
14592 case R_PPC64_PLT32:
14593 case R_PPC64_PLT64:
14594 /* Relocation is to the entry for this symbol in the
14595 procedure linkage table. */
14597 struct plt_entry **plt_list = NULL;
14599 plt_list = &h->elf.plt.plist;
14600 else if (local_got_ents != NULL)
14602 struct plt_entry **local_plt = (struct plt_entry **)
14603 (local_got_ents + symtab_hdr->sh_info);
14604 unsigned char *local_got_tls_masks = (unsigned char *)
14605 (local_plt + symtab_hdr->sh_info);
14606 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14607 plt_list = local_plt + r_symndx;
14611 struct plt_entry *ent;
14613 for (ent = *plt_list; ent != NULL; ent = ent->next)
14614 if (ent->plt.offset != (bfd_vma) -1
14615 && ent->addend == orig_rel.r_addend)
14619 plt = htab->elf.splt;
14620 if (!htab->elf.dynamic_sections_created
14622 || h->elf.dynindx == -1)
14623 plt = htab->elf.iplt;
14624 relocation = (plt->output_section->vma
14625 + plt->output_offset
14626 + ent->plt.offset);
14628 unresolved_reloc = FALSE;
14636 /* Relocation value is TOC base. */
14637 relocation = TOCstart;
14638 if (r_symndx == STN_UNDEF)
14639 relocation += htab->sec_info[input_section->id].toc_off;
14640 else if (unresolved_reloc)
14642 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14643 relocation += htab->sec_info[sec->id].toc_off;
14645 unresolved_reloc = TRUE;
14648 /* TOC16 relocs. We want the offset relative to the TOC base,
14649 which is the address of the start of the TOC plus 0x8000.
14650 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14652 case R_PPC64_TOC16:
14653 case R_PPC64_TOC16_LO:
14654 case R_PPC64_TOC16_HI:
14655 case R_PPC64_TOC16_DS:
14656 case R_PPC64_TOC16_LO_DS:
14657 case R_PPC64_TOC16_HA:
14658 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
14661 /* Relocate against the beginning of the section. */
14662 case R_PPC64_SECTOFF:
14663 case R_PPC64_SECTOFF_LO:
14664 case R_PPC64_SECTOFF_HI:
14665 case R_PPC64_SECTOFF_DS:
14666 case R_PPC64_SECTOFF_LO_DS:
14667 case R_PPC64_SECTOFF_HA:
14669 addend -= sec->output_section->vma;
14672 case R_PPC64_REL16:
14673 case R_PPC64_REL16_LO:
14674 case R_PPC64_REL16_HI:
14675 case R_PPC64_REL16_HA:
14676 case R_PPC64_REL16DX_HA:
14679 case R_PPC64_REL14:
14680 case R_PPC64_REL14_BRNTAKEN:
14681 case R_PPC64_REL14_BRTAKEN:
14682 case R_PPC64_REL24:
14685 case R_PPC64_TPREL16:
14686 case R_PPC64_TPREL16_LO:
14687 case R_PPC64_TPREL16_HI:
14688 case R_PPC64_TPREL16_HA:
14689 case R_PPC64_TPREL16_DS:
14690 case R_PPC64_TPREL16_LO_DS:
14691 case R_PPC64_TPREL16_HIGH:
14692 case R_PPC64_TPREL16_HIGHA:
14693 case R_PPC64_TPREL16_HIGHER:
14694 case R_PPC64_TPREL16_HIGHERA:
14695 case R_PPC64_TPREL16_HIGHEST:
14696 case R_PPC64_TPREL16_HIGHESTA:
14698 && h->elf.root.type == bfd_link_hash_undefweak
14699 && h->elf.dynindx == -1)
14701 /* Make this relocation against an undefined weak symbol
14702 resolve to zero. This is really just a tweak, since
14703 code using weak externs ought to check that they are
14704 defined before using them. */
14705 bfd_byte *p = contents + rel->r_offset - d_offset;
14707 insn = bfd_get_32 (input_bfd, p);
14708 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14710 bfd_put_32 (input_bfd, insn, p);
14713 if (htab->elf.tls_sec != NULL)
14714 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14715 if (bfd_link_pic (info))
14716 /* The TPREL16 relocs shouldn't really be used in shared
14717 libs as they will result in DT_TEXTREL being set, but
14718 support them anyway. */
14722 case R_PPC64_DTPREL16:
14723 case R_PPC64_DTPREL16_LO:
14724 case R_PPC64_DTPREL16_HI:
14725 case R_PPC64_DTPREL16_HA:
14726 case R_PPC64_DTPREL16_DS:
14727 case R_PPC64_DTPREL16_LO_DS:
14728 case R_PPC64_DTPREL16_HIGH:
14729 case R_PPC64_DTPREL16_HIGHA:
14730 case R_PPC64_DTPREL16_HIGHER:
14731 case R_PPC64_DTPREL16_HIGHERA:
14732 case R_PPC64_DTPREL16_HIGHEST:
14733 case R_PPC64_DTPREL16_HIGHESTA:
14734 if (htab->elf.tls_sec != NULL)
14735 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14738 case R_PPC64_ADDR64_LOCAL:
14739 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14744 case R_PPC64_DTPMOD64:
14749 case R_PPC64_TPREL64:
14750 if (htab->elf.tls_sec != NULL)
14751 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14754 case R_PPC64_DTPREL64:
14755 if (htab->elf.tls_sec != NULL)
14756 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14757 /* Fall through. */
14759 /* Relocations that may need to be propagated if this is a
14761 case R_PPC64_REL30:
14762 case R_PPC64_REL32:
14763 case R_PPC64_REL64:
14764 case R_PPC64_ADDR14:
14765 case R_PPC64_ADDR14_BRNTAKEN:
14766 case R_PPC64_ADDR14_BRTAKEN:
14767 case R_PPC64_ADDR16:
14768 case R_PPC64_ADDR16_DS:
14769 case R_PPC64_ADDR16_HA:
14770 case R_PPC64_ADDR16_HI:
14771 case R_PPC64_ADDR16_HIGH:
14772 case R_PPC64_ADDR16_HIGHA:
14773 case R_PPC64_ADDR16_HIGHER:
14774 case R_PPC64_ADDR16_HIGHERA:
14775 case R_PPC64_ADDR16_HIGHEST:
14776 case R_PPC64_ADDR16_HIGHESTA:
14777 case R_PPC64_ADDR16_LO:
14778 case R_PPC64_ADDR16_LO_DS:
14779 case R_PPC64_ADDR24:
14780 case R_PPC64_ADDR32:
14781 case R_PPC64_ADDR64:
14782 case R_PPC64_UADDR16:
14783 case R_PPC64_UADDR32:
14784 case R_PPC64_UADDR64:
14786 if ((input_section->flags & SEC_ALLOC) == 0)
14789 if (NO_OPD_RELOCS && is_opd)
14792 if (bfd_link_pic (info)
14793 ? ((h != NULL && pc_dynrelocs (h))
14794 || must_be_dyn_reloc (info, r_type))
14796 ? h->dyn_relocs != NULL
14797 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14799 bfd_boolean skip, relocate;
14803 /* When generating a dynamic object, these relocations
14804 are copied into the output file to be resolved at run
14810 out_off = _bfd_elf_section_offset (output_bfd, info,
14811 input_section, rel->r_offset);
14812 if (out_off == (bfd_vma) -1)
14814 else if (out_off == (bfd_vma) -2)
14815 skip = TRUE, relocate = TRUE;
14816 out_off += (input_section->output_section->vma
14817 + input_section->output_offset);
14818 outrel.r_offset = out_off;
14819 outrel.r_addend = rel->r_addend;
14821 /* Optimize unaligned reloc use. */
14822 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14823 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14824 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14825 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14826 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14827 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14828 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14829 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14830 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14833 memset (&outrel, 0, sizeof outrel);
14834 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14836 && r_type != R_PPC64_TOC)
14838 BFD_ASSERT (h->elf.dynindx != -1);
14839 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14843 /* This symbol is local, or marked to become local,
14844 or this is an opd section reloc which must point
14845 at a local function. */
14846 outrel.r_addend += relocation;
14847 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14849 if (is_opd && h != NULL)
14851 /* Lie about opd entries. This case occurs
14852 when building shared libraries and we
14853 reference a function in another shared
14854 lib. The same thing happens for a weak
14855 definition in an application that's
14856 overridden by a strong definition in a
14857 shared lib. (I believe this is a generic
14858 bug in binutils handling of weak syms.)
14859 In these cases we won't use the opd
14860 entry in this lib. */
14861 unresolved_reloc = FALSE;
14864 && r_type == R_PPC64_ADDR64
14866 ? h->elf.type == STT_GNU_IFUNC
14867 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14868 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14871 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14873 /* We need to relocate .opd contents for ld.so.
14874 Prelink also wants simple and consistent rules
14875 for relocs. This make all RELATIVE relocs have
14876 *r_offset equal to r_addend. */
14885 ? h->elf.type == STT_GNU_IFUNC
14886 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14888 info->callbacks->einfo
14889 /* xgettext:c-format */
14890 (_("%P: %H: %s for indirect "
14891 "function `%T' unsupported\n"),
14892 input_bfd, input_section, rel->r_offset,
14893 ppc64_elf_howto_table[r_type]->name,
14897 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14899 else if (sec == NULL || sec->owner == NULL)
14901 bfd_set_error (bfd_error_bad_value);
14908 osec = sec->output_section;
14909 indx = elf_section_data (osec)->dynindx;
14913 if ((osec->flags & SEC_READONLY) == 0
14914 && htab->elf.data_index_section != NULL)
14915 osec = htab->elf.data_index_section;
14917 osec = htab->elf.text_index_section;
14918 indx = elf_section_data (osec)->dynindx;
14920 BFD_ASSERT (indx != 0);
14922 /* We are turning this relocation into one
14923 against a section symbol, so subtract out
14924 the output section's address but not the
14925 offset of the input section in the output
14927 outrel.r_addend -= osec->vma;
14930 outrel.r_info = ELF64_R_INFO (indx, r_type);
14934 sreloc = elf_section_data (input_section)->sreloc;
14936 ? h->elf.type == STT_GNU_IFUNC
14937 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14938 sreloc = htab->elf.irelplt;
14939 if (sreloc == NULL)
14942 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14945 loc = sreloc->contents;
14946 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14947 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14949 /* If this reloc is against an external symbol, it will
14950 be computed at runtime, so there's no need to do
14951 anything now. However, for the sake of prelink ensure
14952 that the section contents are a known value. */
14955 unresolved_reloc = FALSE;
14956 /* The value chosen here is quite arbitrary as ld.so
14957 ignores section contents except for the special
14958 case of .opd where the contents might be accessed
14959 before relocation. Choose zero, as that won't
14960 cause reloc overflow. */
14963 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14964 to improve backward compatibility with older
14966 if (r_type == R_PPC64_ADDR64)
14967 addend = outrel.r_addend;
14968 /* Adjust pc_relative relocs to have zero in *r_offset. */
14969 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14970 addend = outrel.r_offset;
14973 else if (r_type == R_PPC64_DTPMOD64
14974 && htab->params->tls_get_addr_opt
14975 && htab->tls_get_addr_fd != NULL
14976 && htab->tls_get_addr_fd->elf.plt.plist != NULL)
14978 /* Set up for __tls_get_addr_opt stub, when this entry
14979 does not have dynamic relocs. */
14981 /* Set up the next word for local dynamic. If it turns
14982 out to be global dynamic, the reloc will overwrite
14984 if (rel->r_offset + 16 <= input_section->size)
14985 bfd_put_64 (input_bfd, DTP_OFFSET - TP_OFFSET,
14986 contents + rel->r_offset + 8);
14988 else if (r_type == R_PPC64_DTPREL64
14989 && htab->params->tls_get_addr_opt
14990 && htab->tls_get_addr_fd != NULL
14991 && htab->tls_get_addr_fd->elf.plt.plist != NULL
14993 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
14994 && rel[-1].r_offset + 8 == rel->r_offset)
14996 /* __tls_get_addr_opt stub value. */
14997 addend += DTP_OFFSET - TP_OFFSET;
15002 case R_PPC64_GLOB_DAT:
15003 case R_PPC64_JMP_SLOT:
15004 case R_PPC64_JMP_IREL:
15005 case R_PPC64_RELATIVE:
15006 /* We shouldn't ever see these dynamic relocs in relocatable
15008 /* Fall through. */
15010 case R_PPC64_PLTGOT16:
15011 case R_PPC64_PLTGOT16_DS:
15012 case R_PPC64_PLTGOT16_HA:
15013 case R_PPC64_PLTGOT16_HI:
15014 case R_PPC64_PLTGOT16_LO:
15015 case R_PPC64_PLTGOT16_LO_DS:
15016 case R_PPC64_PLTREL32:
15017 case R_PPC64_PLTREL64:
15018 /* These ones haven't been implemented yet. */
15020 info->callbacks->einfo
15021 /* xgettext:c-format */
15022 (_("%P: %B: %s is not supported for `%T'\n"),
15024 ppc64_elf_howto_table[r_type]->name, sym_name);
15026 bfd_set_error (bfd_error_invalid_operation);
15031 /* Multi-instruction sequences that access the TOC can be
15032 optimized, eg. addis ra,r2,0; addi rb,ra,x;
15033 to nop; addi rb,r2,x; */
15039 case R_PPC64_GOT_TLSLD16_HI:
15040 case R_PPC64_GOT_TLSGD16_HI:
15041 case R_PPC64_GOT_TPREL16_HI:
15042 case R_PPC64_GOT_DTPREL16_HI:
15043 case R_PPC64_GOT16_HI:
15044 case R_PPC64_TOC16_HI:
15045 /* These relocs would only be useful if building up an
15046 offset to later add to r2, perhaps in an indexed
15047 addressing mode instruction. Don't try to optimize.
15048 Unfortunately, the possibility of someone building up an
15049 offset like this or even with the HA relocs, means that
15050 we need to check the high insn when optimizing the low
15054 case R_PPC64_GOT_TLSLD16_HA:
15055 case R_PPC64_GOT_TLSGD16_HA:
15056 case R_PPC64_GOT_TPREL16_HA:
15057 case R_PPC64_GOT_DTPREL16_HA:
15058 case R_PPC64_GOT16_HA:
15059 case R_PPC64_TOC16_HA:
15060 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15061 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15063 bfd_byte *p = contents + (rel->r_offset & ~3);
15064 bfd_put_32 (input_bfd, NOP, p);
15068 case R_PPC64_GOT_TLSLD16_LO:
15069 case R_PPC64_GOT_TLSGD16_LO:
15070 case R_PPC64_GOT_TPREL16_LO_DS:
15071 case R_PPC64_GOT_DTPREL16_LO_DS:
15072 case R_PPC64_GOT16_LO:
15073 case R_PPC64_GOT16_LO_DS:
15074 case R_PPC64_TOC16_LO:
15075 case R_PPC64_TOC16_LO_DS:
15076 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
15077 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
15079 bfd_byte *p = contents + (rel->r_offset & ~3);
15080 insn = bfd_get_32 (input_bfd, p);
15081 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
15083 /* Transform addic to addi when we change reg. */
15084 insn &= ~((0x3f << 26) | (0x1f << 16));
15085 insn |= (14u << 26) | (2 << 16);
15089 insn &= ~(0x1f << 16);
15092 bfd_put_32 (input_bfd, insn, p);
15097 /* Do any further special processing. */
15098 howto = ppc64_elf_howto_table[(int) r_type];
15104 case R_PPC64_REL16_HA:
15105 case R_PPC64_REL16DX_HA:
15106 case R_PPC64_ADDR16_HA:
15107 case R_PPC64_ADDR16_HIGHA:
15108 case R_PPC64_ADDR16_HIGHERA:
15109 case R_PPC64_ADDR16_HIGHESTA:
15110 case R_PPC64_TOC16_HA:
15111 case R_PPC64_SECTOFF_HA:
15112 case R_PPC64_TPREL16_HA:
15113 case R_PPC64_TPREL16_HIGHA:
15114 case R_PPC64_TPREL16_HIGHERA:
15115 case R_PPC64_TPREL16_HIGHESTA:
15116 case R_PPC64_DTPREL16_HA:
15117 case R_PPC64_DTPREL16_HIGHA:
15118 case R_PPC64_DTPREL16_HIGHERA:
15119 case R_PPC64_DTPREL16_HIGHESTA:
15120 /* It's just possible that this symbol is a weak symbol
15121 that's not actually defined anywhere. In that case,
15122 'sec' would be NULL, and we should leave the symbol
15123 alone (it will be set to zero elsewhere in the link). */
15126 /* Fall through. */
15128 case R_PPC64_GOT16_HA:
15129 case R_PPC64_PLTGOT16_HA:
15130 case R_PPC64_PLT16_HA:
15131 case R_PPC64_GOT_TLSGD16_HA:
15132 case R_PPC64_GOT_TLSLD16_HA:
15133 case R_PPC64_GOT_TPREL16_HA:
15134 case R_PPC64_GOT_DTPREL16_HA:
15135 /* Add 0x10000 if sign bit in 0:15 is set.
15136 Bits 0:15 are not used. */
15140 case R_PPC64_ADDR16_DS:
15141 case R_PPC64_ADDR16_LO_DS:
15142 case R_PPC64_GOT16_DS:
15143 case R_PPC64_GOT16_LO_DS:
15144 case R_PPC64_PLT16_LO_DS:
15145 case R_PPC64_SECTOFF_DS:
15146 case R_PPC64_SECTOFF_LO_DS:
15147 case R_PPC64_TOC16_DS:
15148 case R_PPC64_TOC16_LO_DS:
15149 case R_PPC64_PLTGOT16_DS:
15150 case R_PPC64_PLTGOT16_LO_DS:
15151 case R_PPC64_GOT_TPREL16_DS:
15152 case R_PPC64_GOT_TPREL16_LO_DS:
15153 case R_PPC64_GOT_DTPREL16_DS:
15154 case R_PPC64_GOT_DTPREL16_LO_DS:
15155 case R_PPC64_TPREL16_DS:
15156 case R_PPC64_TPREL16_LO_DS:
15157 case R_PPC64_DTPREL16_DS:
15158 case R_PPC64_DTPREL16_LO_DS:
15159 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15161 /* If this reloc is against an lq, lxv, or stxv insn, then
15162 the value must be a multiple of 16. This is somewhat of
15163 a hack, but the "correct" way to do this by defining _DQ
15164 forms of all the _DS relocs bloats all reloc switches in
15165 this file. It doesn't make much sense to use these
15166 relocs in data, so testing the insn should be safe. */
15167 if ((insn & (0x3f << 26)) == (56u << 26)
15168 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
15170 relocation += addend;
15171 addend = insn & (mask ^ 3);
15172 if ((relocation & mask) != 0)
15174 relocation ^= relocation & mask;
15175 info->callbacks->einfo
15176 /* xgettext:c-format */
15177 (_("%P: %H: error: %s not a multiple of %u\n"),
15178 input_bfd, input_section, rel->r_offset,
15181 bfd_set_error (bfd_error_bad_value);
15188 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15189 because such sections are not SEC_ALLOC and thus ld.so will
15190 not process them. */
15191 if (unresolved_reloc
15192 && !((input_section->flags & SEC_DEBUGGING) != 0
15193 && h->elf.def_dynamic)
15194 && _bfd_elf_section_offset (output_bfd, info, input_section,
15195 rel->r_offset) != (bfd_vma) -1)
15197 info->callbacks->einfo
15198 /* xgettext:c-format */
15199 (_("%P: %H: unresolvable %s against `%T'\n"),
15200 input_bfd, input_section, rel->r_offset,
15202 h->elf.root.root.string);
15206 /* 16-bit fields in insns mostly have signed values, but a
15207 few insns have 16-bit unsigned values. Really, we should
15208 have different reloc types. */
15209 if (howto->complain_on_overflow != complain_overflow_dont
15210 && howto->dst_mask == 0xffff
15211 && (input_section->flags & SEC_CODE) != 0)
15213 enum complain_overflow complain = complain_overflow_signed;
15215 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15216 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15217 complain = complain_overflow_bitfield;
15218 else if (howto->rightshift == 0
15219 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15220 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15221 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15222 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15223 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15224 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
15225 complain = complain_overflow_unsigned;
15226 if (howto->complain_on_overflow != complain)
15228 alt_howto = *howto;
15229 alt_howto.complain_on_overflow = complain;
15230 howto = &alt_howto;
15234 if (r_type == R_PPC64_REL16DX_HA)
15236 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15237 if (rel->r_offset + 4 > input_section->size)
15238 r = bfd_reloc_outofrange;
15241 relocation += addend;
15242 relocation -= (rel->r_offset
15243 + input_section->output_offset
15244 + input_section->output_section->vma);
15245 relocation = (bfd_signed_vma) relocation >> 16;
15246 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15248 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15249 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15251 if (relocation + 0x8000 > 0xffff)
15252 r = bfd_reloc_overflow;
15256 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15257 rel->r_offset, relocation, addend);
15259 if (r != bfd_reloc_ok)
15261 char *more_info = NULL;
15262 const char *reloc_name = howto->name;
15264 if (reloc_dest != DEST_NORMAL)
15266 more_info = bfd_malloc (strlen (reloc_name) + 8);
15267 if (more_info != NULL)
15269 strcpy (more_info, reloc_name);
15270 strcat (more_info, (reloc_dest == DEST_OPD
15271 ? " (OPD)" : " (stub)"));
15272 reloc_name = more_info;
15276 if (r == bfd_reloc_overflow)
15278 /* On code like "if (foo) foo();" don't report overflow
15279 on a branch to zero when foo is undefined. */
15281 && (reloc_dest == DEST_STUB
15283 && (h->elf.root.type == bfd_link_hash_undefweak
15284 || h->elf.root.type == bfd_link_hash_undefined)
15285 && is_branch_reloc (r_type))))
15286 info->callbacks->reloc_overflow (info, &h->elf.root,
15287 sym_name, reloc_name,
15289 input_bfd, input_section,
15294 info->callbacks->einfo
15295 /* xgettext:c-format */
15296 (_("%P: %H: %s against `%T': error %d\n"),
15297 input_bfd, input_section, rel->r_offset,
15298 reloc_name, sym_name, (int) r);
15301 if (more_info != NULL)
15311 Elf_Internal_Shdr *rel_hdr;
15312 size_t deleted = rel - wrel;
15314 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15315 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15316 if (rel_hdr->sh_size == 0)
15318 /* It is too late to remove an empty reloc section. Leave
15320 ??? What is wrong with an empty section??? */
15321 rel_hdr->sh_size = rel_hdr->sh_entsize;
15324 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15325 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15326 input_section->reloc_count -= deleted;
15329 /* If we're emitting relocations, then shortly after this function
15330 returns, reloc offsets and addends for this section will be
15331 adjusted. Worse, reloc symbol indices will be for the output
15332 file rather than the input. Save a copy of the relocs for
15333 opd_entry_value. */
15334 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
15337 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15338 rel = bfd_alloc (input_bfd, amt);
15339 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15340 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
15343 memcpy (rel, relocs, amt);
15348 /* Adjust the value of any local symbols in opd sections. */
15351 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15352 const char *name ATTRIBUTE_UNUSED,
15353 Elf_Internal_Sym *elfsym,
15354 asection *input_sec,
15355 struct elf_link_hash_entry *h)
15357 struct _opd_sec_data *opd;
15364 opd = get_opd_info (input_sec);
15365 if (opd == NULL || opd->adjust == NULL)
15368 value = elfsym->st_value - input_sec->output_offset;
15369 if (!bfd_link_relocatable (info))
15370 value -= input_sec->output_section->vma;
15372 adjust = opd->adjust[OPD_NDX (value)];
15376 elfsym->st_value += adjust;
15380 /* Finish up dynamic symbol handling. We set the contents of various
15381 dynamic sections here. */
15384 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15385 struct bfd_link_info *info,
15386 struct elf_link_hash_entry *h,
15387 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
15389 struct ppc_link_hash_table *htab;
15390 struct plt_entry *ent;
15391 Elf_Internal_Rela rela;
15394 htab = ppc_hash_table (info);
15398 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15399 if (ent->plt.offset != (bfd_vma) -1)
15401 /* This symbol has an entry in the procedure linkage
15402 table. Set it up. */
15403 if (!htab->elf.dynamic_sections_created
15404 || h->dynindx == -1)
15406 BFD_ASSERT (h->type == STT_GNU_IFUNC
15408 && (h->root.type == bfd_link_hash_defined
15409 || h->root.type == bfd_link_hash_defweak));
15410 rela.r_offset = (htab->elf.iplt->output_section->vma
15411 + htab->elf.iplt->output_offset
15412 + ent->plt.offset);
15414 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15416 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
15417 rela.r_addend = (h->root.u.def.value
15418 + h->root.u.def.section->output_offset
15419 + h->root.u.def.section->output_section->vma
15421 loc = (htab->elf.irelplt->contents
15422 + (htab->elf.irelplt->reloc_count++
15423 * sizeof (Elf64_External_Rela)));
15427 rela.r_offset = (htab->elf.splt->output_section->vma
15428 + htab->elf.splt->output_offset
15429 + ent->plt.offset);
15430 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15431 rela.r_addend = ent->addend;
15432 loc = (htab->elf.srelplt->contents
15433 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15434 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
15436 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15438 if (!htab->opd_abi)
15440 if (!h->def_regular)
15442 /* Mark the symbol as undefined, rather than as
15443 defined in glink. Leave the value if there were
15444 any relocations where pointer equality matters
15445 (this is a clue for the dynamic linker, to make
15446 function pointer comparisons work between an
15447 application and shared library), otherwise set it
15449 sym->st_shndx = SHN_UNDEF;
15450 if (!h->pointer_equality_needed)
15452 else if (!h->ref_regular_nonweak)
15454 /* This breaks function pointer comparisons, but
15455 that is better than breaking tests for a NULL
15456 function pointer. */
15465 /* This symbol needs a copy reloc. Set it up. */
15468 if (h->dynindx == -1
15469 || (h->root.type != bfd_link_hash_defined
15470 && h->root.type != bfd_link_hash_defweak)
15471 || htab->elf.srelbss == NULL
15472 || htab->elf.sreldynrelro == NULL)
15475 rela.r_offset = (h->root.u.def.value
15476 + h->root.u.def.section->output_section->vma
15477 + h->root.u.def.section->output_offset);
15478 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15480 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
15481 srel = htab->elf.sreldynrelro;
15483 srel = htab->elf.srelbss;
15484 loc = srel->contents;
15485 loc += srel->reloc_count++ * sizeof (Elf64_External_Rela);
15486 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
15492 /* Used to decide how to sort relocs in an optimal manner for the
15493 dynamic linker, before writing them out. */
15495 static enum elf_reloc_type_class
15496 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15497 const asection *rel_sec,
15498 const Elf_Internal_Rela *rela)
15500 enum elf_ppc64_reloc_type r_type;
15501 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15503 if (rel_sec == htab->elf.irelplt)
15504 return reloc_class_ifunc;
15506 r_type = ELF64_R_TYPE (rela->r_info);
15509 case R_PPC64_RELATIVE:
15510 return reloc_class_relative;
15511 case R_PPC64_JMP_SLOT:
15512 return reloc_class_plt;
15514 return reloc_class_copy;
15516 return reloc_class_normal;
15520 /* Finish up the dynamic sections. */
15523 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15524 struct bfd_link_info *info)
15526 struct ppc_link_hash_table *htab;
15530 htab = ppc_hash_table (info);
15534 dynobj = htab->elf.dynobj;
15535 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
15537 if (htab->elf.dynamic_sections_created)
15539 Elf64_External_Dyn *dyncon, *dynconend;
15541 if (sdyn == NULL || htab->elf.sgot == NULL)
15544 dyncon = (Elf64_External_Dyn *) sdyn->contents;
15545 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
15546 for (; dyncon < dynconend; dyncon++)
15548 Elf_Internal_Dyn dyn;
15551 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15558 case DT_PPC64_GLINK:
15560 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15561 /* We stupidly defined DT_PPC64_GLINK to be the start
15562 of glink rather than the first entry point, which is
15563 what ld.so needs, and now have a bigger stub to
15564 support automatic multiple TOCs. */
15565 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
15569 s = bfd_get_section_by_name (output_bfd, ".opd");
15572 dyn.d_un.d_ptr = s->vma;
15576 if (htab->do_multi_toc && htab->multi_toc_needed)
15577 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15580 case DT_PPC64_OPDSZ:
15581 s = bfd_get_section_by_name (output_bfd, ".opd");
15584 dyn.d_un.d_val = s->size;
15588 s = htab->elf.splt;
15589 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15593 s = htab->elf.srelplt;
15594 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
15598 dyn.d_un.d_val = htab->elf.srelplt->size;
15602 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
15606 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
15608 /* Fill in the first entry in the global offset table.
15609 We use it to hold the link-time TOCbase. */
15610 bfd_put_64 (output_bfd,
15611 elf_gp (output_bfd) + TOC_BASE_OFF,
15612 htab->elf.sgot->contents);
15614 /* Set .got entry size. */
15615 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
15618 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
15620 /* Set .plt entry size. */
15621 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
15622 = PLT_ENTRY_SIZE (htab);
15625 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15626 brlt ourselves if emitrelocations. */
15627 if (htab->brlt != NULL
15628 && htab->brlt->reloc_count != 0
15629 && !_bfd_elf_link_output_relocs (output_bfd,
15631 elf_section_data (htab->brlt)->rela.hdr,
15632 elf_section_data (htab->brlt)->relocs,
15636 if (htab->glink != NULL
15637 && htab->glink->reloc_count != 0
15638 && !_bfd_elf_link_output_relocs (output_bfd,
15640 elf_section_data (htab->glink)->rela.hdr,
15641 elf_section_data (htab->glink)->relocs,
15645 if (htab->glink_eh_frame != NULL
15646 && htab->glink_eh_frame->size != 0)
15650 asection *stub_sec;
15652 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15653 for (stub_sec = htab->params->stub_bfd->sections;
15655 stub_sec = stub_sec->next)
15656 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15662 /* Offset to stub section. */
15663 val = (stub_sec->output_section->vma
15664 + stub_sec->output_offset);
15665 val -= (htab->glink_eh_frame->output_section->vma
15666 + htab->glink_eh_frame->output_offset
15667 + (p - htab->glink_eh_frame->contents));
15668 if (val + 0x80000000 > 0xffffffff)
15670 info->callbacks->einfo
15671 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15675 bfd_put_32 (dynobj, val, p);
15677 /* stub section size. */
15679 /* Augmentation. */
15684 if (htab->glink != NULL && htab->glink->size != 0)
15690 /* Offset to .glink. */
15691 val = (htab->glink->output_section->vma
15692 + htab->glink->output_offset
15694 val -= (htab->glink_eh_frame->output_section->vma
15695 + htab->glink_eh_frame->output_offset
15696 + (p - htab->glink_eh_frame->contents));
15697 if (val + 0x80000000 > 0xffffffff)
15699 info->callbacks->einfo
15700 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15701 htab->glink->name);
15704 bfd_put_32 (dynobj, val, p);
15708 /* Augmentation. */
15714 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15715 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15716 htab->glink_eh_frame,
15717 htab->glink_eh_frame->contents))
15721 /* We need to handle writing out multiple GOT sections ourselves,
15722 since we didn't add them to DYNOBJ. We know dynobj is the first
15724 while ((dynobj = dynobj->link.next) != NULL)
15728 if (!is_ppc64_elf (dynobj))
15731 s = ppc64_elf_tdata (dynobj)->got;
15734 && s->output_section != bfd_abs_section_ptr
15735 && !bfd_set_section_contents (output_bfd, s->output_section,
15736 s->contents, s->output_offset,
15739 s = ppc64_elf_tdata (dynobj)->relgot;
15742 && s->output_section != bfd_abs_section_ptr
15743 && !bfd_set_section_contents (output_bfd, s->output_section,
15744 s->contents, s->output_offset,
15752 #include "elf64-target.h"
15754 /* FreeBSD support */
15756 #undef TARGET_LITTLE_SYM
15757 #undef TARGET_LITTLE_NAME
15759 #undef TARGET_BIG_SYM
15760 #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
15761 #undef TARGET_BIG_NAME
15762 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15765 #define ELF_OSABI ELFOSABI_FREEBSD
15768 #define elf64_bed elf64_powerpc_fbsd_bed
15770 #include "elf64-target.h"