1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 static bfd_reloc_status_type ppc64_elf_toc64_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
57 static bfd_vma opd_entry_value
58 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
60 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61 #define TARGET_LITTLE_NAME "elf64-powerpcle"
62 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63 #define TARGET_BIG_NAME "elf64-powerpc"
64 #define ELF_ARCH bfd_arch_powerpc
65 #define ELF_TARGET_ID PPC64_ELF_DATA
66 #define ELF_MACHINE_CODE EM_PPC64
67 #define ELF_MAXPAGESIZE 0x10000
68 #define ELF_COMMONPAGESIZE 0x1000
69 #define elf_info_to_howto ppc64_elf_info_to_howto
71 #define elf_backend_want_got_sym 0
72 #define elf_backend_want_plt_sym 0
73 #define elf_backend_plt_alignment 3
74 #define elf_backend_plt_not_loaded 1
75 #define elf_backend_got_header_size 8
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_default_execstack 0
81 #define bfd_elf64_mkobject ppc64_elf_mkobject
82 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
83 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
84 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
85 #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
86 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
87 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
88 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
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
92 #define elf_backend_object_p ppc64_elf_object_p
93 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
94 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
95 #define elf_backend_write_core_note ppc64_elf_write_core_note
96 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
97 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
98 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
99 #define elf_backend_check_directives ppc64_elf_process_dot_syms
100 #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
101 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
102 #define elf_backend_check_relocs ppc64_elf_check_relocs
103 #define elf_backend_gc_keep ppc64_elf_gc_keep
104 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
105 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
106 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
107 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
108 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
109 #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
110 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
111 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
112 #define elf_backend_hash_symbol ppc64_elf_hash_symbol
113 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
114 #define elf_backend_action_discarded ppc64_elf_action_discarded
115 #define elf_backend_relocate_section ppc64_elf_relocate_section
116 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
117 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
118 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
119 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
120 #define elf_backend_special_sections ppc64_elf_special_sections
121 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
123 /* The name of the dynamic interpreter. This is put in the .interp
125 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
127 /* The size in bytes of an entry in the procedure linkage table. */
128 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
130 /* The initial size of the plt reserved for the dynamic linker. */
131 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
133 /* Offsets to some stack save slots. */
135 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
136 /* This one is dodgy. ELFv2 does not have a linker word, so use the
137 CR save slot. Used only by optimised __tls_get_addr call stub,
138 relying on __tls_get_addr_opt not saving CR.. */
139 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
141 /* TOC base pointers offset from start of TOC. */
142 #define TOC_BASE_OFF 0x8000
144 /* Offset of tp and dtp pointers from start of TLS block. */
145 #define TP_OFFSET 0x7000
146 #define DTP_OFFSET 0x8000
148 /* .plt call stub instructions. The normal stub is like this, but
149 sometimes the .plt entry crosses a 64k boundary and we need to
150 insert an addi to adjust r11. */
151 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
152 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
153 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
154 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
155 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
156 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
157 #define BCTR 0x4e800420 /* bctr */
159 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
160 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
161 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
163 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
164 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
165 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
166 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
167 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
168 #define BNECTR 0x4ca20420 /* bnectr+ */
169 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
171 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
172 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
173 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
175 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
177 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
178 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
180 /* glink call stub instructions. We enter with the index in R0. */
181 #define GLINK_CALL_STUB_SIZE (16*4)
185 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
186 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
188 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
189 /* ld %2,(0b-1b)(%11) */
190 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
191 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
197 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
198 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
199 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
200 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
201 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
204 #define NOP 0x60000000
206 /* Some other nops. */
207 #define CROR_151515 0x4def7b82
208 #define CROR_313131 0x4ffffb82
210 /* .glink entries for the first 32k functions are two instructions. */
211 #define LI_R0_0 0x38000000 /* li %r0,0 */
212 #define B_DOT 0x48000000 /* b . */
214 /* After that, we need two instructions to load the index, followed by
216 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
217 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
219 /* Instructions used by the save and restore reg functions. */
220 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
221 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
222 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
223 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
224 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
225 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
226 #define LI_R12_0 0x39800000 /* li %r12,0 */
227 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
228 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
229 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
230 #define BLR 0x4e800020 /* blr */
232 /* Since .opd is an array of descriptors and each entry will end up
233 with identical R_PPC64_RELATIVE relocs, there is really no need to
234 propagate .opd relocs; The dynamic linker should be taught to
235 relocate .opd without reloc entries. */
236 #ifndef NO_OPD_RELOCS
237 #define NO_OPD_RELOCS 0
240 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
242 /* Relocation HOWTO's. */
243 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
245 static reloc_howto_type ppc64_elf_howto_raw[] = {
246 /* This reloc does nothing. */
247 HOWTO (R_PPC64_NONE, /* type */
249 2, /* size (0 = byte, 1 = short, 2 = long) */
251 FALSE, /* pc_relative */
253 complain_overflow_dont, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_PPC64_NONE", /* name */
256 FALSE, /* partial_inplace */
259 FALSE), /* pcrel_offset */
261 /* A standard 32 bit relocation. */
262 HOWTO (R_PPC64_ADDR32, /* type */
264 2, /* size (0 = byte, 1 = short, 2 = long) */
266 FALSE, /* pc_relative */
268 complain_overflow_bitfield, /* complain_on_overflow */
269 bfd_elf_generic_reloc, /* special_function */
270 "R_PPC64_ADDR32", /* name */
271 FALSE, /* partial_inplace */
273 0xffffffff, /* dst_mask */
274 FALSE), /* pcrel_offset */
276 /* An absolute 26 bit branch; the lower two bits must be zero.
277 FIXME: we don't check that, we just clear them. */
278 HOWTO (R_PPC64_ADDR24, /* type */
280 2, /* size (0 = byte, 1 = short, 2 = long) */
282 FALSE, /* pc_relative */
284 complain_overflow_bitfield, /* complain_on_overflow */
285 bfd_elf_generic_reloc, /* special_function */
286 "R_PPC64_ADDR24", /* name */
287 FALSE, /* partial_inplace */
289 0x03fffffc, /* dst_mask */
290 FALSE), /* pcrel_offset */
292 /* A standard 16 bit relocation. */
293 HOWTO (R_PPC64_ADDR16, /* type */
295 1, /* size (0 = byte, 1 = short, 2 = long) */
297 FALSE, /* pc_relative */
299 complain_overflow_bitfield, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_PPC64_ADDR16", /* name */
302 FALSE, /* partial_inplace */
304 0xffff, /* dst_mask */
305 FALSE), /* pcrel_offset */
307 /* A 16 bit relocation without overflow. */
308 HOWTO (R_PPC64_ADDR16_LO, /* type */
310 1, /* size (0 = byte, 1 = short, 2 = long) */
312 FALSE, /* pc_relative */
314 complain_overflow_dont,/* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_PPC64_ADDR16_LO", /* name */
317 FALSE, /* partial_inplace */
319 0xffff, /* dst_mask */
320 FALSE), /* pcrel_offset */
322 /* Bits 16-31 of an address. */
323 HOWTO (R_PPC64_ADDR16_HI, /* type */
325 1, /* size (0 = byte, 1 = short, 2 = long) */
327 FALSE, /* pc_relative */
329 complain_overflow_signed, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_PPC64_ADDR16_HI", /* name */
332 FALSE, /* partial_inplace */
334 0xffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
337 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
338 bits, treated as a signed number, is negative. */
339 HOWTO (R_PPC64_ADDR16_HA, /* type */
341 1, /* size (0 = byte, 1 = short, 2 = long) */
343 FALSE, /* pc_relative */
345 complain_overflow_signed, /* complain_on_overflow */
346 ppc64_elf_ha_reloc, /* special_function */
347 "R_PPC64_ADDR16_HA", /* name */
348 FALSE, /* partial_inplace */
350 0xffff, /* dst_mask */
351 FALSE), /* pcrel_offset */
353 /* An absolute 16 bit branch; the lower two bits must be zero.
354 FIXME: we don't check that, we just clear them. */
355 HOWTO (R_PPC64_ADDR14, /* type */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE, /* pc_relative */
361 complain_overflow_bitfield, /* complain_on_overflow */
362 ppc64_elf_branch_reloc, /* special_function */
363 "R_PPC64_ADDR14", /* name */
364 FALSE, /* partial_inplace */
366 0x0000fffc, /* dst_mask */
367 FALSE), /* pcrel_offset */
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is expected to be taken. The lower two
371 bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
376 FALSE, /* pc_relative */
378 complain_overflow_bitfield, /* complain_on_overflow */
379 ppc64_elf_brtaken_reloc, /* special_function */
380 "R_PPC64_ADDR14_BRTAKEN",/* name */
381 FALSE, /* partial_inplace */
383 0x0000fffc, /* dst_mask */
384 FALSE), /* pcrel_offset */
386 /* An absolute 16 bit branch, for which bit 10 should be set to
387 indicate that the branch is not expected to be taken. The lower
388 two bits must be zero. */
389 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
391 2, /* size (0 = byte, 1 = short, 2 = long) */
393 FALSE, /* pc_relative */
395 complain_overflow_bitfield, /* complain_on_overflow */
396 ppc64_elf_brtaken_reloc, /* special_function */
397 "R_PPC64_ADDR14_BRNTAKEN",/* name */
398 FALSE, /* partial_inplace */
400 0x0000fffc, /* dst_mask */
401 FALSE), /* pcrel_offset */
403 /* A relative 26 bit branch; the lower two bits must be zero. */
404 HOWTO (R_PPC64_REL24, /* type */
406 2, /* size (0 = byte, 1 = short, 2 = long) */
408 TRUE, /* pc_relative */
410 complain_overflow_signed, /* complain_on_overflow */
411 ppc64_elf_branch_reloc, /* special_function */
412 "R_PPC64_REL24", /* name */
413 FALSE, /* partial_inplace */
415 0x03fffffc, /* dst_mask */
416 TRUE), /* pcrel_offset */
418 /* A relative 16 bit branch; the lower two bits must be zero. */
419 HOWTO (R_PPC64_REL14, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 TRUE, /* pc_relative */
425 complain_overflow_signed, /* complain_on_overflow */
426 ppc64_elf_branch_reloc, /* special_function */
427 "R_PPC64_REL14", /* name */
428 FALSE, /* partial_inplace */
430 0x0000fffc, /* dst_mask */
431 TRUE), /* pcrel_offset */
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is expected to be taken. The lower two bits must be
436 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE, /* pc_relative */
442 complain_overflow_signed, /* complain_on_overflow */
443 ppc64_elf_brtaken_reloc, /* special_function */
444 "R_PPC64_REL14_BRTAKEN", /* name */
445 FALSE, /* partial_inplace */
447 0x0000fffc, /* dst_mask */
448 TRUE), /* pcrel_offset */
450 /* A relative 16 bit branch. Bit 10 should be set to indicate that
451 the branch is not expected to be taken. The lower two bits must
453 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
455 2, /* size (0 = byte, 1 = short, 2 = long) */
457 TRUE, /* pc_relative */
459 complain_overflow_signed, /* complain_on_overflow */
460 ppc64_elf_brtaken_reloc, /* special_function */
461 "R_PPC64_REL14_BRNTAKEN",/* name */
462 FALSE, /* partial_inplace */
464 0x0000fffc, /* dst_mask */
465 TRUE), /* pcrel_offset */
467 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
469 HOWTO (R_PPC64_GOT16, /* type */
471 1, /* size (0 = byte, 1 = short, 2 = long) */
473 FALSE, /* pc_relative */
475 complain_overflow_signed, /* complain_on_overflow */
476 ppc64_elf_unhandled_reloc, /* special_function */
477 "R_PPC64_GOT16", /* name */
478 FALSE, /* partial_inplace */
480 0xffff, /* dst_mask */
481 FALSE), /* pcrel_offset */
483 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
485 HOWTO (R_PPC64_GOT16_LO, /* type */
487 1, /* size (0 = byte, 1 = short, 2 = long) */
489 FALSE, /* pc_relative */
491 complain_overflow_dont, /* complain_on_overflow */
492 ppc64_elf_unhandled_reloc, /* special_function */
493 "R_PPC64_GOT16_LO", /* name */
494 FALSE, /* partial_inplace */
496 0xffff, /* dst_mask */
497 FALSE), /* pcrel_offset */
499 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
501 HOWTO (R_PPC64_GOT16_HI, /* type */
503 1, /* size (0 = byte, 1 = short, 2 = long) */
505 FALSE, /* pc_relative */
507 complain_overflow_signed,/* complain_on_overflow */
508 ppc64_elf_unhandled_reloc, /* special_function */
509 "R_PPC64_GOT16_HI", /* name */
510 FALSE, /* partial_inplace */
512 0xffff, /* dst_mask */
513 FALSE), /* pcrel_offset */
515 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
517 HOWTO (R_PPC64_GOT16_HA, /* type */
519 1, /* size (0 = byte, 1 = short, 2 = long) */
521 FALSE, /* pc_relative */
523 complain_overflow_signed,/* complain_on_overflow */
524 ppc64_elf_unhandled_reloc, /* special_function */
525 "R_PPC64_GOT16_HA", /* name */
526 FALSE, /* partial_inplace */
528 0xffff, /* dst_mask */
529 FALSE), /* pcrel_offset */
531 /* This is used only by the dynamic linker. The symbol should exist
532 both in the object being run and in some shared library. The
533 dynamic linker copies the data addressed by the symbol from the
534 shared library into the object, because the object being
535 run has to have the data at some particular address. */
536 HOWTO (R_PPC64_COPY, /* type */
538 0, /* this one is variable size */
540 FALSE, /* pc_relative */
542 complain_overflow_dont, /* complain_on_overflow */
543 ppc64_elf_unhandled_reloc, /* special_function */
544 "R_PPC64_COPY", /* name */
545 FALSE, /* partial_inplace */
548 FALSE), /* pcrel_offset */
550 /* Like R_PPC64_ADDR64, but used when setting global offset table
552 HOWTO (R_PPC64_GLOB_DAT, /* type */
554 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
556 FALSE, /* pc_relative */
558 complain_overflow_dont, /* complain_on_overflow */
559 ppc64_elf_unhandled_reloc, /* special_function */
560 "R_PPC64_GLOB_DAT", /* name */
561 FALSE, /* partial_inplace */
563 ONES (64), /* dst_mask */
564 FALSE), /* pcrel_offset */
566 /* Created by the link editor. Marks a procedure linkage table
567 entry for a symbol. */
568 HOWTO (R_PPC64_JMP_SLOT, /* type */
570 0, /* size (0 = byte, 1 = short, 2 = long) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 ppc64_elf_unhandled_reloc, /* special_function */
576 "R_PPC64_JMP_SLOT", /* name */
577 FALSE, /* partial_inplace */
580 FALSE), /* pcrel_offset */
582 /* Used only by the dynamic linker. When the object is run, this
583 doubleword64 is set to the load address of the object, plus the
585 HOWTO (R_PPC64_RELATIVE, /* type */
587 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
589 FALSE, /* pc_relative */
591 complain_overflow_dont, /* complain_on_overflow */
592 bfd_elf_generic_reloc, /* special_function */
593 "R_PPC64_RELATIVE", /* name */
594 FALSE, /* partial_inplace */
596 ONES (64), /* dst_mask */
597 FALSE), /* pcrel_offset */
599 /* Like R_PPC64_ADDR32, but may be unaligned. */
600 HOWTO (R_PPC64_UADDR32, /* type */
602 2, /* size (0 = byte, 1 = short, 2 = long) */
604 FALSE, /* pc_relative */
606 complain_overflow_bitfield, /* complain_on_overflow */
607 bfd_elf_generic_reloc, /* special_function */
608 "R_PPC64_UADDR32", /* name */
609 FALSE, /* partial_inplace */
611 0xffffffff, /* dst_mask */
612 FALSE), /* pcrel_offset */
614 /* Like R_PPC64_ADDR16, but may be unaligned. */
615 HOWTO (R_PPC64_UADDR16, /* type */
617 1, /* size (0 = byte, 1 = short, 2 = long) */
619 FALSE, /* pc_relative */
621 complain_overflow_bitfield, /* complain_on_overflow */
622 bfd_elf_generic_reloc, /* special_function */
623 "R_PPC64_UADDR16", /* name */
624 FALSE, /* partial_inplace */
626 0xffff, /* dst_mask */
627 FALSE), /* pcrel_offset */
629 /* 32-bit PC relative. */
630 HOWTO (R_PPC64_REL32, /* type */
632 2, /* size (0 = byte, 1 = short, 2 = long) */
634 TRUE, /* pc_relative */
636 /* FIXME: Verify. Was complain_overflow_bitfield. */
637 complain_overflow_signed, /* complain_on_overflow */
638 bfd_elf_generic_reloc, /* special_function */
639 "R_PPC64_REL32", /* name */
640 FALSE, /* partial_inplace */
642 0xffffffff, /* dst_mask */
643 TRUE), /* pcrel_offset */
645 /* 32-bit relocation to the symbol's procedure linkage table. */
646 HOWTO (R_PPC64_PLT32, /* type */
648 2, /* size (0 = byte, 1 = short, 2 = long) */
650 FALSE, /* pc_relative */
652 complain_overflow_bitfield, /* complain_on_overflow */
653 ppc64_elf_unhandled_reloc, /* special_function */
654 "R_PPC64_PLT32", /* name */
655 FALSE, /* partial_inplace */
657 0xffffffff, /* dst_mask */
658 FALSE), /* pcrel_offset */
660 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
661 FIXME: R_PPC64_PLTREL32 not supported. */
662 HOWTO (R_PPC64_PLTREL32, /* type */
664 2, /* size (0 = byte, 1 = short, 2 = long) */
666 TRUE, /* pc_relative */
668 complain_overflow_signed, /* complain_on_overflow */
669 bfd_elf_generic_reloc, /* special_function */
670 "R_PPC64_PLTREL32", /* name */
671 FALSE, /* partial_inplace */
673 0xffffffff, /* dst_mask */
674 TRUE), /* pcrel_offset */
676 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
678 HOWTO (R_PPC64_PLT16_LO, /* type */
680 1, /* size (0 = byte, 1 = short, 2 = long) */
682 FALSE, /* pc_relative */
684 complain_overflow_dont, /* complain_on_overflow */
685 ppc64_elf_unhandled_reloc, /* special_function */
686 "R_PPC64_PLT16_LO", /* name */
687 FALSE, /* partial_inplace */
689 0xffff, /* dst_mask */
690 FALSE), /* pcrel_offset */
692 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
694 HOWTO (R_PPC64_PLT16_HI, /* type */
696 1, /* size (0 = byte, 1 = short, 2 = long) */
698 FALSE, /* pc_relative */
700 complain_overflow_signed, /* complain_on_overflow */
701 ppc64_elf_unhandled_reloc, /* special_function */
702 "R_PPC64_PLT16_HI", /* name */
703 FALSE, /* partial_inplace */
705 0xffff, /* dst_mask */
706 FALSE), /* pcrel_offset */
708 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
710 HOWTO (R_PPC64_PLT16_HA, /* type */
712 1, /* size (0 = byte, 1 = short, 2 = long) */
714 FALSE, /* pc_relative */
716 complain_overflow_signed, /* complain_on_overflow */
717 ppc64_elf_unhandled_reloc, /* special_function */
718 "R_PPC64_PLT16_HA", /* name */
719 FALSE, /* partial_inplace */
721 0xffff, /* dst_mask */
722 FALSE), /* pcrel_offset */
724 /* 16-bit section relative relocation. */
725 HOWTO (R_PPC64_SECTOFF, /* type */
727 1, /* size (0 = byte, 1 = short, 2 = long) */
729 FALSE, /* pc_relative */
731 complain_overflow_bitfield, /* complain_on_overflow */
732 ppc64_elf_sectoff_reloc, /* special_function */
733 "R_PPC64_SECTOFF", /* name */
734 FALSE, /* partial_inplace */
736 0xffff, /* dst_mask */
737 FALSE), /* pcrel_offset */
739 /* Like R_PPC64_SECTOFF, but no overflow warning. */
740 HOWTO (R_PPC64_SECTOFF_LO, /* type */
742 1, /* size (0 = byte, 1 = short, 2 = long) */
744 FALSE, /* pc_relative */
746 complain_overflow_dont, /* complain_on_overflow */
747 ppc64_elf_sectoff_reloc, /* special_function */
748 "R_PPC64_SECTOFF_LO", /* name */
749 FALSE, /* partial_inplace */
751 0xffff, /* dst_mask */
752 FALSE), /* pcrel_offset */
754 /* 16-bit upper half section relative relocation. */
755 HOWTO (R_PPC64_SECTOFF_HI, /* type */
757 1, /* size (0 = byte, 1 = short, 2 = long) */
759 FALSE, /* pc_relative */
761 complain_overflow_signed, /* complain_on_overflow */
762 ppc64_elf_sectoff_reloc, /* special_function */
763 "R_PPC64_SECTOFF_HI", /* name */
764 FALSE, /* partial_inplace */
766 0xffff, /* dst_mask */
767 FALSE), /* pcrel_offset */
769 /* 16-bit upper half adjusted section relative relocation. */
770 HOWTO (R_PPC64_SECTOFF_HA, /* type */
772 1, /* size (0 = byte, 1 = short, 2 = long) */
774 FALSE, /* pc_relative */
776 complain_overflow_signed, /* complain_on_overflow */
777 ppc64_elf_sectoff_ha_reloc, /* special_function */
778 "R_PPC64_SECTOFF_HA", /* name */
779 FALSE, /* partial_inplace */
781 0xffff, /* dst_mask */
782 FALSE), /* pcrel_offset */
784 /* Like R_PPC64_REL24 without touching the two least significant bits. */
785 HOWTO (R_PPC64_REL30, /* type */
787 2, /* size (0 = byte, 1 = short, 2 = long) */
789 TRUE, /* pc_relative */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC64_REL30", /* name */
794 FALSE, /* partial_inplace */
796 0xfffffffc, /* dst_mask */
797 TRUE), /* pcrel_offset */
799 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
801 /* A standard 64-bit relocation. */
802 HOWTO (R_PPC64_ADDR64, /* type */
804 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
806 FALSE, /* pc_relative */
808 complain_overflow_dont, /* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_PPC64_ADDR64", /* name */
811 FALSE, /* partial_inplace */
813 ONES (64), /* dst_mask */
814 FALSE), /* pcrel_offset */
816 /* The bits 32-47 of an address. */
817 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
819 1, /* size (0 = byte, 1 = short, 2 = long) */
821 FALSE, /* pc_relative */
823 complain_overflow_dont, /* complain_on_overflow */
824 bfd_elf_generic_reloc, /* special_function */
825 "R_PPC64_ADDR16_HIGHER", /* name */
826 FALSE, /* partial_inplace */
828 0xffff, /* dst_mask */
829 FALSE), /* pcrel_offset */
831 /* The bits 32-47 of an address, plus 1 if the contents of the low
832 16 bits, treated as a signed number, is negative. */
833 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
835 1, /* size (0 = byte, 1 = short, 2 = long) */
837 FALSE, /* pc_relative */
839 complain_overflow_dont, /* complain_on_overflow */
840 ppc64_elf_ha_reloc, /* special_function */
841 "R_PPC64_ADDR16_HIGHERA", /* name */
842 FALSE, /* partial_inplace */
844 0xffff, /* dst_mask */
845 FALSE), /* pcrel_offset */
847 /* The bits 48-63 of an address. */
848 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
850 1, /* size (0 = byte, 1 = short, 2 = long) */
852 FALSE, /* pc_relative */
854 complain_overflow_dont, /* complain_on_overflow */
855 bfd_elf_generic_reloc, /* special_function */
856 "R_PPC64_ADDR16_HIGHEST", /* name */
857 FALSE, /* partial_inplace */
859 0xffff, /* dst_mask */
860 FALSE), /* pcrel_offset */
862 /* The bits 48-63 of an address, plus 1 if the contents of the low
863 16 bits, treated as a signed number, is negative. */
864 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
866 1, /* size (0 = byte, 1 = short, 2 = long) */
868 FALSE, /* pc_relative */
870 complain_overflow_dont, /* complain_on_overflow */
871 ppc64_elf_ha_reloc, /* special_function */
872 "R_PPC64_ADDR16_HIGHESTA", /* name */
873 FALSE, /* partial_inplace */
875 0xffff, /* dst_mask */
876 FALSE), /* pcrel_offset */
878 /* Like ADDR64, but may be unaligned. */
879 HOWTO (R_PPC64_UADDR64, /* type */
881 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
883 FALSE, /* pc_relative */
885 complain_overflow_dont, /* complain_on_overflow */
886 bfd_elf_generic_reloc, /* special_function */
887 "R_PPC64_UADDR64", /* name */
888 FALSE, /* partial_inplace */
890 ONES (64), /* dst_mask */
891 FALSE), /* pcrel_offset */
893 /* 64-bit relative relocation. */
894 HOWTO (R_PPC64_REL64, /* type */
896 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
898 TRUE, /* pc_relative */
900 complain_overflow_dont, /* complain_on_overflow */
901 bfd_elf_generic_reloc, /* special_function */
902 "R_PPC64_REL64", /* name */
903 FALSE, /* partial_inplace */
905 ONES (64), /* dst_mask */
906 TRUE), /* pcrel_offset */
908 /* 64-bit relocation to the symbol's procedure linkage table. */
909 HOWTO (R_PPC64_PLT64, /* type */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 FALSE, /* pc_relative */
915 complain_overflow_dont, /* complain_on_overflow */
916 ppc64_elf_unhandled_reloc, /* special_function */
917 "R_PPC64_PLT64", /* name */
918 FALSE, /* partial_inplace */
920 ONES (64), /* dst_mask */
921 FALSE), /* pcrel_offset */
923 /* 64-bit PC relative relocation to the symbol's procedure linkage
925 /* FIXME: R_PPC64_PLTREL64 not supported. */
926 HOWTO (R_PPC64_PLTREL64, /* type */
928 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
930 TRUE, /* pc_relative */
932 complain_overflow_dont, /* complain_on_overflow */
933 ppc64_elf_unhandled_reloc, /* special_function */
934 "R_PPC64_PLTREL64", /* name */
935 FALSE, /* partial_inplace */
937 ONES (64), /* dst_mask */
938 TRUE), /* pcrel_offset */
940 /* 16 bit TOC-relative relocation. */
942 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
943 HOWTO (R_PPC64_TOC16, /* type */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
947 FALSE, /* pc_relative */
949 complain_overflow_signed, /* complain_on_overflow */
950 ppc64_elf_toc_reloc, /* special_function */
951 "R_PPC64_TOC16", /* name */
952 FALSE, /* partial_inplace */
954 0xffff, /* dst_mask */
955 FALSE), /* pcrel_offset */
957 /* 16 bit TOC-relative relocation without overflow. */
959 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_LO, /* type */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
964 FALSE, /* pc_relative */
966 complain_overflow_dont, /* complain_on_overflow */
967 ppc64_elf_toc_reloc, /* special_function */
968 "R_PPC64_TOC16_LO", /* name */
969 FALSE, /* partial_inplace */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
974 /* 16 bit TOC-relative relocation, high 16 bits. */
976 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
977 HOWTO (R_PPC64_TOC16_HI, /* type */
979 1, /* size (0 = byte, 1 = short, 2 = long) */
981 FALSE, /* pc_relative */
983 complain_overflow_signed, /* complain_on_overflow */
984 ppc64_elf_toc_reloc, /* special_function */
985 "R_PPC64_TOC16_HI", /* name */
986 FALSE, /* partial_inplace */
988 0xffff, /* dst_mask */
989 FALSE), /* pcrel_offset */
991 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
992 contents of the low 16 bits, treated as a signed number, is
995 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
996 HOWTO (R_PPC64_TOC16_HA, /* type */
998 1, /* size (0 = byte, 1 = short, 2 = long) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_signed, /* complain_on_overflow */
1003 ppc64_elf_toc_ha_reloc, /* special_function */
1004 "R_PPC64_TOC16_HA", /* name */
1005 FALSE, /* partial_inplace */
1007 0xffff, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1012 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1013 HOWTO (R_PPC64_TOC, /* type */
1015 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1017 FALSE, /* pc_relative */
1019 complain_overflow_bitfield, /* complain_on_overflow */
1020 ppc64_elf_toc64_reloc, /* special_function */
1021 "R_PPC64_TOC", /* name */
1022 FALSE, /* partial_inplace */
1024 ONES (64), /* dst_mask */
1025 FALSE), /* pcrel_offset */
1027 /* Like R_PPC64_GOT16, but also informs the link editor that the
1028 value to relocate may (!) refer to a PLT entry which the link
1029 editor (a) may replace with the symbol value. If the link editor
1030 is unable to fully resolve the symbol, it may (b) create a PLT
1031 entry and store the address to the new PLT entry in the GOT.
1032 This permits lazy resolution of function symbols at run time.
1033 The link editor may also skip all of this and just (c) emit a
1034 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1035 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1036 HOWTO (R_PPC64_PLTGOT16, /* type */
1038 1, /* size (0 = byte, 1 = short, 2 = long) */
1040 FALSE, /* pc_relative */
1042 complain_overflow_signed, /* complain_on_overflow */
1043 ppc64_elf_unhandled_reloc, /* special_function */
1044 "R_PPC64_PLTGOT16", /* name */
1045 FALSE, /* partial_inplace */
1047 0xffff, /* dst_mask */
1048 FALSE), /* pcrel_offset */
1050 /* Like R_PPC64_PLTGOT16, but without overflow. */
1051 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1052 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1054 1, /* size (0 = byte, 1 = short, 2 = long) */
1056 FALSE, /* pc_relative */
1058 complain_overflow_dont, /* complain_on_overflow */
1059 ppc64_elf_unhandled_reloc, /* special_function */
1060 "R_PPC64_PLTGOT16_LO", /* name */
1061 FALSE, /* partial_inplace */
1063 0xffff, /* dst_mask */
1064 FALSE), /* pcrel_offset */
1066 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1067 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1068 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1069 16, /* rightshift */
1070 1, /* size (0 = byte, 1 = short, 2 = long) */
1072 FALSE, /* pc_relative */
1074 complain_overflow_signed, /* complain_on_overflow */
1075 ppc64_elf_unhandled_reloc, /* special_function */
1076 "R_PPC64_PLTGOT16_HI", /* name */
1077 FALSE, /* partial_inplace */
1079 0xffff, /* dst_mask */
1080 FALSE), /* pcrel_offset */
1082 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1083 1 if the contents of the low 16 bits, treated as a signed number,
1085 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1086 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1087 16, /* rightshift */
1088 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 FALSE, /* pc_relative */
1092 complain_overflow_signed, /* complain_on_overflow */
1093 ppc64_elf_unhandled_reloc, /* special_function */
1094 "R_PPC64_PLTGOT16_HA", /* name */
1095 FALSE, /* partial_inplace */
1097 0xffff, /* dst_mask */
1098 FALSE), /* pcrel_offset */
1100 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1101 HOWTO (R_PPC64_ADDR16_DS, /* type */
1103 1, /* size (0 = byte, 1 = short, 2 = long) */
1105 FALSE, /* pc_relative */
1107 complain_overflow_bitfield, /* complain_on_overflow */
1108 bfd_elf_generic_reloc, /* special_function */
1109 "R_PPC64_ADDR16_DS", /* name */
1110 FALSE, /* partial_inplace */
1112 0xfffc, /* dst_mask */
1113 FALSE), /* pcrel_offset */
1115 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1116 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1120 FALSE, /* pc_relative */
1122 complain_overflow_dont,/* complain_on_overflow */
1123 bfd_elf_generic_reloc, /* special_function */
1124 "R_PPC64_ADDR16_LO_DS",/* name */
1125 FALSE, /* partial_inplace */
1127 0xfffc, /* dst_mask */
1128 FALSE), /* pcrel_offset */
1130 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1131 HOWTO (R_PPC64_GOT16_DS, /* type */
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1135 FALSE, /* pc_relative */
1137 complain_overflow_signed, /* complain_on_overflow */
1138 ppc64_elf_unhandled_reloc, /* special_function */
1139 "R_PPC64_GOT16_DS", /* name */
1140 FALSE, /* partial_inplace */
1142 0xfffc, /* dst_mask */
1143 FALSE), /* pcrel_offset */
1145 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1146 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1150 FALSE, /* pc_relative */
1152 complain_overflow_dont, /* complain_on_overflow */
1153 ppc64_elf_unhandled_reloc, /* special_function */
1154 "R_PPC64_GOT16_LO_DS", /* name */
1155 FALSE, /* partial_inplace */
1157 0xfffc, /* dst_mask */
1158 FALSE), /* pcrel_offset */
1160 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1161 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1165 FALSE, /* pc_relative */
1167 complain_overflow_dont, /* complain_on_overflow */
1168 ppc64_elf_unhandled_reloc, /* special_function */
1169 "R_PPC64_PLT16_LO_DS", /* name */
1170 FALSE, /* partial_inplace */
1172 0xfffc, /* dst_mask */
1173 FALSE), /* pcrel_offset */
1175 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1176 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1178 1, /* size (0 = byte, 1 = short, 2 = long) */
1180 FALSE, /* pc_relative */
1182 complain_overflow_bitfield, /* complain_on_overflow */
1183 ppc64_elf_sectoff_reloc, /* special_function */
1184 "R_PPC64_SECTOFF_DS", /* name */
1185 FALSE, /* partial_inplace */
1187 0xfffc, /* dst_mask */
1188 FALSE), /* pcrel_offset */
1190 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1191 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1193 1, /* size (0 = byte, 1 = short, 2 = long) */
1195 FALSE, /* pc_relative */
1197 complain_overflow_dont, /* complain_on_overflow */
1198 ppc64_elf_sectoff_reloc, /* special_function */
1199 "R_PPC64_SECTOFF_LO_DS",/* name */
1200 FALSE, /* partial_inplace */
1202 0xfffc, /* dst_mask */
1203 FALSE), /* pcrel_offset */
1205 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1206 HOWTO (R_PPC64_TOC16_DS, /* type */
1208 1, /* size (0 = byte, 1 = short, 2 = long) */
1210 FALSE, /* pc_relative */
1212 complain_overflow_signed, /* complain_on_overflow */
1213 ppc64_elf_toc_reloc, /* special_function */
1214 "R_PPC64_TOC16_DS", /* name */
1215 FALSE, /* partial_inplace */
1217 0xfffc, /* dst_mask */
1218 FALSE), /* pcrel_offset */
1220 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1221 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1223 1, /* size (0 = byte, 1 = short, 2 = long) */
1225 FALSE, /* pc_relative */
1227 complain_overflow_dont, /* complain_on_overflow */
1228 ppc64_elf_toc_reloc, /* special_function */
1229 "R_PPC64_TOC16_LO_DS", /* name */
1230 FALSE, /* partial_inplace */
1232 0xfffc, /* dst_mask */
1233 FALSE), /* pcrel_offset */
1235 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1236 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1237 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1239 1, /* size (0 = byte, 1 = short, 2 = long) */
1241 FALSE, /* pc_relative */
1243 complain_overflow_signed, /* complain_on_overflow */
1244 ppc64_elf_unhandled_reloc, /* special_function */
1245 "R_PPC64_PLTGOT16_DS", /* name */
1246 FALSE, /* partial_inplace */
1248 0xfffc, /* dst_mask */
1249 FALSE), /* pcrel_offset */
1251 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1252 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1253 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1255 1, /* size (0 = byte, 1 = short, 2 = long) */
1257 FALSE, /* pc_relative */
1259 complain_overflow_dont, /* complain_on_overflow */
1260 ppc64_elf_unhandled_reloc, /* special_function */
1261 "R_PPC64_PLTGOT16_LO_DS",/* name */
1262 FALSE, /* partial_inplace */
1264 0xfffc, /* dst_mask */
1265 FALSE), /* pcrel_offset */
1267 /* Marker relocs for TLS. */
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE, /* pc_relative */
1274 complain_overflow_dont, /* complain_on_overflow */
1275 bfd_elf_generic_reloc, /* special_function */
1276 "R_PPC64_TLS", /* name */
1277 FALSE, /* partial_inplace */
1280 FALSE), /* pcrel_offset */
1282 HOWTO (R_PPC64_TLSGD,
1284 2, /* size (0 = byte, 1 = short, 2 = long) */
1286 FALSE, /* pc_relative */
1288 complain_overflow_dont, /* complain_on_overflow */
1289 bfd_elf_generic_reloc, /* special_function */
1290 "R_PPC64_TLSGD", /* name */
1291 FALSE, /* partial_inplace */
1294 FALSE), /* pcrel_offset */
1296 HOWTO (R_PPC64_TLSLD,
1298 2, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE, /* pc_relative */
1302 complain_overflow_dont, /* complain_on_overflow */
1303 bfd_elf_generic_reloc, /* special_function */
1304 "R_PPC64_TLSLD", /* name */
1305 FALSE, /* partial_inplace */
1308 FALSE), /* pcrel_offset */
1310 HOWTO (R_PPC64_TOCSAVE,
1312 2, /* size (0 = byte, 1 = short, 2 = long) */
1314 FALSE, /* pc_relative */
1316 complain_overflow_dont, /* complain_on_overflow */
1317 bfd_elf_generic_reloc, /* special_function */
1318 "R_PPC64_TOCSAVE", /* name */
1319 FALSE, /* partial_inplace */
1322 FALSE), /* pcrel_offset */
1324 /* Computes the load module index of the load module that contains the
1325 definition of its TLS sym. */
1326 HOWTO (R_PPC64_DTPMOD64,
1328 4, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE, /* pc_relative */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPMOD64", /* name */
1335 FALSE, /* partial_inplace */
1337 ONES (64), /* dst_mask */
1338 FALSE), /* pcrel_offset */
1340 /* Computes a dtv-relative displacement, the difference between the value
1341 of sym+add and the base address of the thread-local storage block that
1342 contains the definition of sym, minus 0x8000. */
1343 HOWTO (R_PPC64_DTPREL64,
1345 4, /* size (0 = byte, 1 = short, 2 = long) */
1347 FALSE, /* pc_relative */
1349 complain_overflow_dont, /* complain_on_overflow */
1350 ppc64_elf_unhandled_reloc, /* special_function */
1351 "R_PPC64_DTPREL64", /* name */
1352 FALSE, /* partial_inplace */
1354 ONES (64), /* dst_mask */
1355 FALSE), /* pcrel_offset */
1357 /* A 16 bit dtprel reloc. */
1358 HOWTO (R_PPC64_DTPREL16,
1360 1, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE, /* pc_relative */
1364 complain_overflow_signed, /* complain_on_overflow */
1365 ppc64_elf_unhandled_reloc, /* special_function */
1366 "R_PPC64_DTPREL16", /* name */
1367 FALSE, /* partial_inplace */
1369 0xffff, /* dst_mask */
1370 FALSE), /* pcrel_offset */
1372 /* Like DTPREL16, but no overflow. */
1373 HOWTO (R_PPC64_DTPREL16_LO,
1375 1, /* size (0 = byte, 1 = short, 2 = long) */
1377 FALSE, /* pc_relative */
1379 complain_overflow_dont, /* complain_on_overflow */
1380 ppc64_elf_unhandled_reloc, /* special_function */
1381 "R_PPC64_DTPREL16_LO", /* name */
1382 FALSE, /* partial_inplace */
1384 0xffff, /* dst_mask */
1385 FALSE), /* pcrel_offset */
1387 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1388 HOWTO (R_PPC64_DTPREL16_HI,
1389 16, /* rightshift */
1390 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 FALSE, /* pc_relative */
1394 complain_overflow_signed, /* complain_on_overflow */
1395 ppc64_elf_unhandled_reloc, /* special_function */
1396 "R_PPC64_DTPREL16_HI", /* name */
1397 FALSE, /* partial_inplace */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1402 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1403 HOWTO (R_PPC64_DTPREL16_HA,
1404 16, /* rightshift */
1405 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 FALSE, /* pc_relative */
1409 complain_overflow_signed, /* complain_on_overflow */
1410 ppc64_elf_unhandled_reloc, /* special_function */
1411 "R_PPC64_DTPREL16_HA", /* name */
1412 FALSE, /* partial_inplace */
1414 0xffff, /* dst_mask */
1415 FALSE), /* pcrel_offset */
1417 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1418 HOWTO (R_PPC64_DTPREL16_HIGHER,
1419 32, /* rightshift */
1420 1, /* size (0 = byte, 1 = short, 2 = long) */
1422 FALSE, /* pc_relative */
1424 complain_overflow_dont, /* complain_on_overflow */
1425 ppc64_elf_unhandled_reloc, /* special_function */
1426 "R_PPC64_DTPREL16_HIGHER", /* name */
1427 FALSE, /* partial_inplace */
1429 0xffff, /* dst_mask */
1430 FALSE), /* pcrel_offset */
1432 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1433 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1434 32, /* rightshift */
1435 1, /* size (0 = byte, 1 = short, 2 = long) */
1437 FALSE, /* pc_relative */
1439 complain_overflow_dont, /* complain_on_overflow */
1440 ppc64_elf_unhandled_reloc, /* special_function */
1441 "R_PPC64_DTPREL16_HIGHERA", /* name */
1442 FALSE, /* partial_inplace */
1444 0xffff, /* dst_mask */
1445 FALSE), /* pcrel_offset */
1447 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1448 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1449 48, /* rightshift */
1450 1, /* size (0 = byte, 1 = short, 2 = long) */
1452 FALSE, /* pc_relative */
1454 complain_overflow_dont, /* complain_on_overflow */
1455 ppc64_elf_unhandled_reloc, /* special_function */
1456 "R_PPC64_DTPREL16_HIGHEST", /* name */
1457 FALSE, /* partial_inplace */
1459 0xffff, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1462 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1463 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1464 48, /* rightshift */
1465 1, /* size (0 = byte, 1 = short, 2 = long) */
1467 FALSE, /* pc_relative */
1469 complain_overflow_dont, /* complain_on_overflow */
1470 ppc64_elf_unhandled_reloc, /* special_function */
1471 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1472 FALSE, /* partial_inplace */
1474 0xffff, /* dst_mask */
1475 FALSE), /* pcrel_offset */
1477 /* Like DTPREL16, but for insns with a DS field. */
1478 HOWTO (R_PPC64_DTPREL16_DS,
1480 1, /* size (0 = byte, 1 = short, 2 = long) */
1482 FALSE, /* pc_relative */
1484 complain_overflow_signed, /* complain_on_overflow */
1485 ppc64_elf_unhandled_reloc, /* special_function */
1486 "R_PPC64_DTPREL16_DS", /* name */
1487 FALSE, /* partial_inplace */
1489 0xfffc, /* dst_mask */
1490 FALSE), /* pcrel_offset */
1492 /* Like DTPREL16_DS, but no overflow. */
1493 HOWTO (R_PPC64_DTPREL16_LO_DS,
1495 1, /* size (0 = byte, 1 = short, 2 = long) */
1497 FALSE, /* pc_relative */
1499 complain_overflow_dont, /* complain_on_overflow */
1500 ppc64_elf_unhandled_reloc, /* special_function */
1501 "R_PPC64_DTPREL16_LO_DS", /* name */
1502 FALSE, /* partial_inplace */
1504 0xfffc, /* dst_mask */
1505 FALSE), /* pcrel_offset */
1507 /* Computes a tp-relative displacement, the difference between the value of
1508 sym+add and the value of the thread pointer (r13). */
1509 HOWTO (R_PPC64_TPREL64,
1511 4, /* size (0 = byte, 1 = short, 2 = long) */
1513 FALSE, /* pc_relative */
1515 complain_overflow_dont, /* complain_on_overflow */
1516 ppc64_elf_unhandled_reloc, /* special_function */
1517 "R_PPC64_TPREL64", /* name */
1518 FALSE, /* partial_inplace */
1520 ONES (64), /* dst_mask */
1521 FALSE), /* pcrel_offset */
1523 /* A 16 bit tprel reloc. */
1524 HOWTO (R_PPC64_TPREL16,
1526 1, /* size (0 = byte, 1 = short, 2 = long) */
1528 FALSE, /* pc_relative */
1530 complain_overflow_signed, /* complain_on_overflow */
1531 ppc64_elf_unhandled_reloc, /* special_function */
1532 "R_PPC64_TPREL16", /* name */
1533 FALSE, /* partial_inplace */
1535 0xffff, /* dst_mask */
1536 FALSE), /* pcrel_offset */
1538 /* Like TPREL16, but no overflow. */
1539 HOWTO (R_PPC64_TPREL16_LO,
1541 1, /* size (0 = byte, 1 = short, 2 = long) */
1543 FALSE, /* pc_relative */
1545 complain_overflow_dont, /* complain_on_overflow */
1546 ppc64_elf_unhandled_reloc, /* special_function */
1547 "R_PPC64_TPREL16_LO", /* name */
1548 FALSE, /* partial_inplace */
1550 0xffff, /* dst_mask */
1551 FALSE), /* pcrel_offset */
1553 /* Like TPREL16_LO, but next higher group of 16 bits. */
1554 HOWTO (R_PPC64_TPREL16_HI,
1555 16, /* rightshift */
1556 1, /* size (0 = byte, 1 = short, 2 = long) */
1558 FALSE, /* pc_relative */
1560 complain_overflow_signed, /* complain_on_overflow */
1561 ppc64_elf_unhandled_reloc, /* special_function */
1562 "R_PPC64_TPREL16_HI", /* name */
1563 FALSE, /* partial_inplace */
1565 0xffff, /* dst_mask */
1566 FALSE), /* pcrel_offset */
1568 /* Like TPREL16_HI, but adjust for low 16 bits. */
1569 HOWTO (R_PPC64_TPREL16_HA,
1570 16, /* rightshift */
1571 1, /* size (0 = byte, 1 = short, 2 = long) */
1573 FALSE, /* pc_relative */
1575 complain_overflow_signed, /* complain_on_overflow */
1576 ppc64_elf_unhandled_reloc, /* special_function */
1577 "R_PPC64_TPREL16_HA", /* name */
1578 FALSE, /* partial_inplace */
1580 0xffff, /* dst_mask */
1581 FALSE), /* pcrel_offset */
1583 /* Like TPREL16_HI, but next higher group of 16 bits. */
1584 HOWTO (R_PPC64_TPREL16_HIGHER,
1585 32, /* rightshift */
1586 1, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE, /* pc_relative */
1590 complain_overflow_dont, /* complain_on_overflow */
1591 ppc64_elf_unhandled_reloc, /* special_function */
1592 "R_PPC64_TPREL16_HIGHER", /* name */
1593 FALSE, /* partial_inplace */
1595 0xffff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1598 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1599 HOWTO (R_PPC64_TPREL16_HIGHERA,
1600 32, /* rightshift */
1601 1, /* size (0 = byte, 1 = short, 2 = long) */
1603 FALSE, /* pc_relative */
1605 complain_overflow_dont, /* complain_on_overflow */
1606 ppc64_elf_unhandled_reloc, /* special_function */
1607 "R_PPC64_TPREL16_HIGHERA", /* name */
1608 FALSE, /* partial_inplace */
1610 0xffff, /* dst_mask */
1611 FALSE), /* pcrel_offset */
1613 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1614 HOWTO (R_PPC64_TPREL16_HIGHEST,
1615 48, /* rightshift */
1616 1, /* size (0 = byte, 1 = short, 2 = long) */
1618 FALSE, /* pc_relative */
1620 complain_overflow_dont, /* complain_on_overflow */
1621 ppc64_elf_unhandled_reloc, /* special_function */
1622 "R_PPC64_TPREL16_HIGHEST", /* name */
1623 FALSE, /* partial_inplace */
1625 0xffff, /* dst_mask */
1626 FALSE), /* pcrel_offset */
1628 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1629 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1630 48, /* rightshift */
1631 1, /* size (0 = byte, 1 = short, 2 = long) */
1633 FALSE, /* pc_relative */
1635 complain_overflow_dont, /* complain_on_overflow */
1636 ppc64_elf_unhandled_reloc, /* special_function */
1637 "R_PPC64_TPREL16_HIGHESTA", /* name */
1638 FALSE, /* partial_inplace */
1640 0xffff, /* dst_mask */
1641 FALSE), /* pcrel_offset */
1643 /* Like TPREL16, but for insns with a DS field. */
1644 HOWTO (R_PPC64_TPREL16_DS,
1646 1, /* size (0 = byte, 1 = short, 2 = long) */
1648 FALSE, /* pc_relative */
1650 complain_overflow_signed, /* complain_on_overflow */
1651 ppc64_elf_unhandled_reloc, /* special_function */
1652 "R_PPC64_TPREL16_DS", /* name */
1653 FALSE, /* partial_inplace */
1655 0xfffc, /* dst_mask */
1656 FALSE), /* pcrel_offset */
1658 /* Like TPREL16_DS, but no overflow. */
1659 HOWTO (R_PPC64_TPREL16_LO_DS,
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1663 FALSE, /* pc_relative */
1665 complain_overflow_dont, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_TPREL16_LO_DS", /* name */
1668 FALSE, /* partial_inplace */
1670 0xfffc, /* dst_mask */
1671 FALSE), /* pcrel_offset */
1673 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1674 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1675 to the first entry relative to the TOC base (r2). */
1676 HOWTO (R_PPC64_GOT_TLSGD16,
1678 1, /* size (0 = byte, 1 = short, 2 = long) */
1680 FALSE, /* pc_relative */
1682 complain_overflow_signed, /* complain_on_overflow */
1683 ppc64_elf_unhandled_reloc, /* special_function */
1684 "R_PPC64_GOT_TLSGD16", /* name */
1685 FALSE, /* partial_inplace */
1687 0xffff, /* dst_mask */
1688 FALSE), /* pcrel_offset */
1690 /* Like GOT_TLSGD16, but no overflow. */
1691 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1693 1, /* size (0 = byte, 1 = short, 2 = long) */
1695 FALSE, /* pc_relative */
1697 complain_overflow_dont, /* complain_on_overflow */
1698 ppc64_elf_unhandled_reloc, /* special_function */
1699 "R_PPC64_GOT_TLSGD16_LO", /* name */
1700 FALSE, /* partial_inplace */
1702 0xffff, /* dst_mask */
1703 FALSE), /* pcrel_offset */
1705 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1706 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1707 16, /* rightshift */
1708 1, /* size (0 = byte, 1 = short, 2 = long) */
1710 FALSE, /* pc_relative */
1712 complain_overflow_signed, /* complain_on_overflow */
1713 ppc64_elf_unhandled_reloc, /* special_function */
1714 "R_PPC64_GOT_TLSGD16_HI", /* name */
1715 FALSE, /* partial_inplace */
1717 0xffff, /* dst_mask */
1718 FALSE), /* pcrel_offset */
1720 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1721 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1722 16, /* rightshift */
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE, /* pc_relative */
1727 complain_overflow_signed, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc, /* special_function */
1729 "R_PPC64_GOT_TLSGD16_HA", /* name */
1730 FALSE, /* partial_inplace */
1732 0xffff, /* dst_mask */
1733 FALSE), /* pcrel_offset */
1735 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1736 with values (sym+add)@dtpmod and zero, and computes the offset to the
1737 first entry relative to the TOC base (r2). */
1738 HOWTO (R_PPC64_GOT_TLSLD16,
1740 1, /* size (0 = byte, 1 = short, 2 = long) */
1742 FALSE, /* pc_relative */
1744 complain_overflow_signed, /* complain_on_overflow */
1745 ppc64_elf_unhandled_reloc, /* special_function */
1746 "R_PPC64_GOT_TLSLD16", /* name */
1747 FALSE, /* partial_inplace */
1749 0xffff, /* dst_mask */
1750 FALSE), /* pcrel_offset */
1752 /* Like GOT_TLSLD16, but no overflow. */
1753 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1755 1, /* size (0 = byte, 1 = short, 2 = long) */
1757 FALSE, /* pc_relative */
1759 complain_overflow_dont, /* complain_on_overflow */
1760 ppc64_elf_unhandled_reloc, /* special_function */
1761 "R_PPC64_GOT_TLSLD16_LO", /* name */
1762 FALSE, /* partial_inplace */
1764 0xffff, /* dst_mask */
1765 FALSE), /* pcrel_offset */
1767 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1768 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1769 16, /* rightshift */
1770 1, /* size (0 = byte, 1 = short, 2 = long) */
1772 FALSE, /* pc_relative */
1774 complain_overflow_signed, /* complain_on_overflow */
1775 ppc64_elf_unhandled_reloc, /* special_function */
1776 "R_PPC64_GOT_TLSLD16_HI", /* name */
1777 FALSE, /* partial_inplace */
1779 0xffff, /* dst_mask */
1780 FALSE), /* pcrel_offset */
1782 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1783 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1784 16, /* rightshift */
1785 1, /* size (0 = byte, 1 = short, 2 = long) */
1787 FALSE, /* pc_relative */
1789 complain_overflow_signed, /* complain_on_overflow */
1790 ppc64_elf_unhandled_reloc, /* special_function */
1791 "R_PPC64_GOT_TLSLD16_HA", /* name */
1792 FALSE, /* partial_inplace */
1794 0xffff, /* dst_mask */
1795 FALSE), /* pcrel_offset */
1797 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1798 the offset to the entry relative to the TOC base (r2). */
1799 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1801 1, /* size (0 = byte, 1 = short, 2 = long) */
1803 FALSE, /* pc_relative */
1805 complain_overflow_signed, /* complain_on_overflow */
1806 ppc64_elf_unhandled_reloc, /* special_function */
1807 "R_PPC64_GOT_DTPREL16_DS", /* name */
1808 FALSE, /* partial_inplace */
1810 0xfffc, /* dst_mask */
1811 FALSE), /* pcrel_offset */
1813 /* Like GOT_DTPREL16_DS, but no overflow. */
1814 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1816 1, /* size (0 = byte, 1 = short, 2 = long) */
1818 FALSE, /* pc_relative */
1820 complain_overflow_dont, /* complain_on_overflow */
1821 ppc64_elf_unhandled_reloc, /* special_function */
1822 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1823 FALSE, /* partial_inplace */
1825 0xfffc, /* dst_mask */
1826 FALSE), /* pcrel_offset */
1828 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1829 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1830 16, /* rightshift */
1831 1, /* size (0 = byte, 1 = short, 2 = long) */
1833 FALSE, /* pc_relative */
1835 complain_overflow_signed, /* complain_on_overflow */
1836 ppc64_elf_unhandled_reloc, /* special_function */
1837 "R_PPC64_GOT_DTPREL16_HI", /* name */
1838 FALSE, /* partial_inplace */
1840 0xffff, /* dst_mask */
1841 FALSE), /* pcrel_offset */
1843 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1844 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1845 16, /* rightshift */
1846 1, /* size (0 = byte, 1 = short, 2 = long) */
1848 FALSE, /* pc_relative */
1850 complain_overflow_signed, /* complain_on_overflow */
1851 ppc64_elf_unhandled_reloc, /* special_function */
1852 "R_PPC64_GOT_DTPREL16_HA", /* name */
1853 FALSE, /* partial_inplace */
1855 0xffff, /* dst_mask */
1856 FALSE), /* pcrel_offset */
1858 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1859 offset to the entry relative to the TOC base (r2). */
1860 HOWTO (R_PPC64_GOT_TPREL16_DS,
1862 1, /* size (0 = byte, 1 = short, 2 = long) */
1864 FALSE, /* pc_relative */
1866 complain_overflow_signed, /* complain_on_overflow */
1867 ppc64_elf_unhandled_reloc, /* special_function */
1868 "R_PPC64_GOT_TPREL16_DS", /* name */
1869 FALSE, /* partial_inplace */
1871 0xfffc, /* dst_mask */
1872 FALSE), /* pcrel_offset */
1874 /* Like GOT_TPREL16_DS, but no overflow. */
1875 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1877 1, /* size (0 = byte, 1 = short, 2 = long) */
1879 FALSE, /* pc_relative */
1881 complain_overflow_dont, /* complain_on_overflow */
1882 ppc64_elf_unhandled_reloc, /* special_function */
1883 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1884 FALSE, /* partial_inplace */
1886 0xfffc, /* dst_mask */
1887 FALSE), /* pcrel_offset */
1889 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1890 HOWTO (R_PPC64_GOT_TPREL16_HI,
1891 16, /* rightshift */
1892 1, /* size (0 = byte, 1 = short, 2 = long) */
1894 FALSE, /* pc_relative */
1896 complain_overflow_signed, /* complain_on_overflow */
1897 ppc64_elf_unhandled_reloc, /* special_function */
1898 "R_PPC64_GOT_TPREL16_HI", /* name */
1899 FALSE, /* partial_inplace */
1901 0xffff, /* dst_mask */
1902 FALSE), /* pcrel_offset */
1904 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1905 HOWTO (R_PPC64_GOT_TPREL16_HA,
1906 16, /* rightshift */
1907 1, /* size (0 = byte, 1 = short, 2 = long) */
1909 FALSE, /* pc_relative */
1911 complain_overflow_signed, /* complain_on_overflow */
1912 ppc64_elf_unhandled_reloc, /* special_function */
1913 "R_PPC64_GOT_TPREL16_HA", /* name */
1914 FALSE, /* partial_inplace */
1916 0xffff, /* dst_mask */
1917 FALSE), /* pcrel_offset */
1919 HOWTO (R_PPC64_JMP_IREL, /* type */
1921 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1923 FALSE, /* pc_relative */
1925 complain_overflow_dont, /* complain_on_overflow */
1926 ppc64_elf_unhandled_reloc, /* special_function */
1927 "R_PPC64_JMP_IREL", /* name */
1928 FALSE, /* partial_inplace */
1931 FALSE), /* pcrel_offset */
1933 HOWTO (R_PPC64_IRELATIVE, /* type */
1935 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1937 FALSE, /* pc_relative */
1939 complain_overflow_dont, /* complain_on_overflow */
1940 bfd_elf_generic_reloc, /* special_function */
1941 "R_PPC64_IRELATIVE", /* name */
1942 FALSE, /* partial_inplace */
1944 ONES (64), /* dst_mask */
1945 FALSE), /* pcrel_offset */
1947 /* A 16 bit relative relocation. */
1948 HOWTO (R_PPC64_REL16, /* type */
1950 1, /* size (0 = byte, 1 = short, 2 = long) */
1952 TRUE, /* pc_relative */
1954 complain_overflow_bitfield, /* complain_on_overflow */
1955 bfd_elf_generic_reloc, /* special_function */
1956 "R_PPC64_REL16", /* name */
1957 FALSE, /* partial_inplace */
1959 0xffff, /* dst_mask */
1960 TRUE), /* pcrel_offset */
1962 /* A 16 bit relative relocation without overflow. */
1963 HOWTO (R_PPC64_REL16_LO, /* type */
1965 1, /* size (0 = byte, 1 = short, 2 = long) */
1967 TRUE, /* pc_relative */
1969 complain_overflow_dont,/* complain_on_overflow */
1970 bfd_elf_generic_reloc, /* special_function */
1971 "R_PPC64_REL16_LO", /* name */
1972 FALSE, /* partial_inplace */
1974 0xffff, /* dst_mask */
1975 TRUE), /* pcrel_offset */
1977 /* The high order 16 bits of a relative address. */
1978 HOWTO (R_PPC64_REL16_HI, /* type */
1979 16, /* rightshift */
1980 1, /* size (0 = byte, 1 = short, 2 = long) */
1982 TRUE, /* pc_relative */
1984 complain_overflow_signed, /* complain_on_overflow */
1985 bfd_elf_generic_reloc, /* special_function */
1986 "R_PPC64_REL16_HI", /* name */
1987 FALSE, /* partial_inplace */
1989 0xffff, /* dst_mask */
1990 TRUE), /* pcrel_offset */
1992 /* The high order 16 bits of a relative address, plus 1 if the contents of
1993 the low 16 bits, treated as a signed number, is negative. */
1994 HOWTO (R_PPC64_REL16_HA, /* type */
1995 16, /* rightshift */
1996 1, /* size (0 = byte, 1 = short, 2 = long) */
1998 TRUE, /* pc_relative */
2000 complain_overflow_signed, /* complain_on_overflow */
2001 ppc64_elf_ha_reloc, /* special_function */
2002 "R_PPC64_REL16_HA", /* name */
2003 FALSE, /* partial_inplace */
2005 0xffff, /* dst_mask */
2006 TRUE), /* pcrel_offset */
2008 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2009 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2010 16, /* rightshift */
2011 1, /* size (0 = byte, 1 = short, 2 = long) */
2013 FALSE, /* pc_relative */
2015 complain_overflow_dont, /* complain_on_overflow */
2016 bfd_elf_generic_reloc, /* special_function */
2017 "R_PPC64_ADDR16_HIGH", /* name */
2018 FALSE, /* partial_inplace */
2020 0xffff, /* dst_mask */
2021 FALSE), /* pcrel_offset */
2023 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2024 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2025 16, /* rightshift */
2026 1, /* size (0 = byte, 1 = short, 2 = long) */
2028 FALSE, /* pc_relative */
2030 complain_overflow_dont, /* complain_on_overflow */
2031 ppc64_elf_ha_reloc, /* special_function */
2032 "R_PPC64_ADDR16_HIGHA", /* name */
2033 FALSE, /* partial_inplace */
2035 0xffff, /* dst_mask */
2036 FALSE), /* pcrel_offset */
2038 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2039 HOWTO (R_PPC64_DTPREL16_HIGH,
2040 16, /* rightshift */
2041 1, /* size (0 = byte, 1 = short, 2 = long) */
2043 FALSE, /* pc_relative */
2045 complain_overflow_dont, /* complain_on_overflow */
2046 ppc64_elf_unhandled_reloc, /* special_function */
2047 "R_PPC64_DTPREL16_HIGH", /* name */
2048 FALSE, /* partial_inplace */
2050 0xffff, /* dst_mask */
2051 FALSE), /* pcrel_offset */
2053 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2054 HOWTO (R_PPC64_DTPREL16_HIGHA,
2055 16, /* rightshift */
2056 1, /* size (0 = byte, 1 = short, 2 = long) */
2058 FALSE, /* pc_relative */
2060 complain_overflow_dont, /* complain_on_overflow */
2061 ppc64_elf_unhandled_reloc, /* special_function */
2062 "R_PPC64_DTPREL16_HIGHA", /* name */
2063 FALSE, /* partial_inplace */
2065 0xffff, /* dst_mask */
2066 FALSE), /* pcrel_offset */
2068 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2069 HOWTO (R_PPC64_TPREL16_HIGH,
2070 16, /* rightshift */
2071 1, /* size (0 = byte, 1 = short, 2 = long) */
2073 FALSE, /* pc_relative */
2075 complain_overflow_dont, /* complain_on_overflow */
2076 ppc64_elf_unhandled_reloc, /* special_function */
2077 "R_PPC64_TPREL16_HIGH", /* name */
2078 FALSE, /* partial_inplace */
2080 0xffff, /* dst_mask */
2081 FALSE), /* pcrel_offset */
2083 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2084 HOWTO (R_PPC64_TPREL16_HIGHA,
2085 16, /* rightshift */
2086 1, /* size (0 = byte, 1 = short, 2 = long) */
2088 FALSE, /* pc_relative */
2090 complain_overflow_dont, /* complain_on_overflow */
2091 ppc64_elf_unhandled_reloc, /* special_function */
2092 "R_PPC64_TPREL16_HIGHA", /* name */
2093 FALSE, /* partial_inplace */
2095 0xffff, /* dst_mask */
2096 FALSE), /* pcrel_offset */
2098 /* GNU extension to record C++ vtable hierarchy. */
2099 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2101 0, /* size (0 = byte, 1 = short, 2 = long) */
2103 FALSE, /* pc_relative */
2105 complain_overflow_dont, /* complain_on_overflow */
2106 NULL, /* special_function */
2107 "R_PPC64_GNU_VTINHERIT", /* name */
2108 FALSE, /* partial_inplace */
2111 FALSE), /* pcrel_offset */
2113 /* GNU extension to record C++ vtable member usage. */
2114 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2116 0, /* size (0 = byte, 1 = short, 2 = long) */
2118 FALSE, /* pc_relative */
2120 complain_overflow_dont, /* complain_on_overflow */
2121 NULL, /* special_function */
2122 "R_PPC64_GNU_VTENTRY", /* name */
2123 FALSE, /* partial_inplace */
2126 FALSE), /* pcrel_offset */
2130 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2134 ppc_howto_init (void)
2136 unsigned int i, type;
2139 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2142 type = ppc64_elf_howto_raw[i].type;
2143 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2144 / sizeof (ppc64_elf_howto_table[0])));
2145 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2149 static reloc_howto_type *
2150 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2151 bfd_reloc_code_real_type code)
2153 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2155 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2156 /* Initialize howto table if needed. */
2164 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2166 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2168 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2170 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2172 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2174 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2176 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2178 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2180 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2182 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2184 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2186 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2188 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2190 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2192 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2194 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2196 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2198 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2200 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2202 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2204 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2206 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2208 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2210 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2212 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2214 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2216 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2218 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2220 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2222 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2224 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2226 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2228 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2230 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2232 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2234 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2236 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2238 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2240 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2242 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2244 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2246 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2248 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2250 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2252 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2254 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2256 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2258 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2260 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2262 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2264 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2266 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2268 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2270 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2272 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2274 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2276 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2278 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2280 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2282 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2284 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2286 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2288 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2290 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2292 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2294 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2296 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2298 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2300 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2302 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2304 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2306 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2308 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2310 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2312 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2314 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2316 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2318 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2320 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2322 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2324 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2326 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2328 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2330 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2332 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2334 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2336 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2338 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2340 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2342 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2344 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2346 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2348 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2350 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2352 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2354 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2356 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2358 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2360 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2362 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2364 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2366 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2368 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2370 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2372 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2374 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2376 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2378 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2380 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2382 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2384 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2386 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2388 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2392 return ppc64_elf_howto_table[r];
2395 static reloc_howto_type *
2396 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2402 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2404 if (ppc64_elf_howto_raw[i].name != NULL
2405 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2406 return &ppc64_elf_howto_raw[i];
2411 /* Set the howto pointer for a PowerPC ELF reloc. */
2414 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2415 Elf_Internal_Rela *dst)
2419 /* Initialize howto table if needed. */
2420 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2423 type = ELF64_R_TYPE (dst->r_info);
2424 if (type >= (sizeof (ppc64_elf_howto_table)
2425 / sizeof (ppc64_elf_howto_table[0])))
2427 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2429 type = R_PPC64_NONE;
2431 cache_ptr->howto = ppc64_elf_howto_table[type];
2434 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2436 static bfd_reloc_status_type
2437 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2438 void *data, asection *input_section,
2439 bfd *output_bfd, char **error_message)
2441 /* If this is a relocatable link (output_bfd test tells us), just
2442 call the generic function. Any adjustment will be done at final
2444 if (output_bfd != NULL)
2445 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2446 input_section, output_bfd, error_message);
2448 /* Adjust the addend for sign extension of the low 16 bits.
2449 We won't actually be using the low 16 bits, so trashing them
2451 reloc_entry->addend += 0x8000;
2452 return bfd_reloc_continue;
2455 static bfd_reloc_status_type
2456 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2457 void *data, asection *input_section,
2458 bfd *output_bfd, char **error_message)
2460 if (output_bfd != NULL)
2461 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2462 input_section, output_bfd, error_message);
2464 if (strcmp (symbol->section->name, ".opd") == 0
2465 && (symbol->section->owner->flags & DYNAMIC) == 0)
2467 bfd_vma dest = opd_entry_value (symbol->section,
2468 symbol->value + reloc_entry->addend,
2470 if (dest != (bfd_vma) -1)
2471 reloc_entry->addend = dest - (symbol->value
2472 + symbol->section->output_section->vma
2473 + symbol->section->output_offset);
2475 return bfd_reloc_continue;
2478 static bfd_reloc_status_type
2479 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2480 void *data, asection *input_section,
2481 bfd *output_bfd, char **error_message)
2484 enum elf_ppc64_reloc_type r_type;
2485 bfd_size_type octets;
2486 /* Assume 'at' branch hints. */
2487 bfd_boolean is_isa_v2 = TRUE;
2489 /* If this is a relocatable link (output_bfd test tells us), just
2490 call the generic function. Any adjustment will be done at final
2492 if (output_bfd != NULL)
2493 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2494 input_section, output_bfd, error_message);
2496 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2497 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2498 insn &= ~(0x01 << 21);
2499 r_type = reloc_entry->howto->type;
2500 if (r_type == R_PPC64_ADDR14_BRTAKEN
2501 || r_type == R_PPC64_REL14_BRTAKEN)
2502 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2506 /* Set 'a' bit. This is 0b00010 in BO field for branch
2507 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2508 for branch on CTR insns (BO == 1a00t or 1a01t). */
2509 if ((insn & (0x14 << 21)) == (0x04 << 21))
2511 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2521 if (!bfd_is_com_section (symbol->section))
2522 target = symbol->value;
2523 target += symbol->section->output_section->vma;
2524 target += symbol->section->output_offset;
2525 target += reloc_entry->addend;
2527 from = (reloc_entry->address
2528 + input_section->output_offset
2529 + input_section->output_section->vma);
2531 /* Invert 'y' bit if not the default. */
2532 if ((bfd_signed_vma) (target - from) < 0)
2535 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2537 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2538 input_section, output_bfd, error_message);
2541 static bfd_reloc_status_type
2542 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2543 void *data, asection *input_section,
2544 bfd *output_bfd, char **error_message)
2546 /* If this is a relocatable link (output_bfd test tells us), just
2547 call the generic function. Any adjustment will be done at final
2549 if (output_bfd != NULL)
2550 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2551 input_section, output_bfd, error_message);
2553 /* Subtract the symbol section base address. */
2554 reloc_entry->addend -= symbol->section->output_section->vma;
2555 return bfd_reloc_continue;
2558 static bfd_reloc_status_type
2559 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2560 void *data, asection *input_section,
2561 bfd *output_bfd, char **error_message)
2563 /* If this is a relocatable link (output_bfd test tells us), just
2564 call the generic function. Any adjustment will be done at final
2566 if (output_bfd != NULL)
2567 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2568 input_section, output_bfd, error_message);
2570 /* Subtract the symbol section base address. */
2571 reloc_entry->addend -= symbol->section->output_section->vma;
2573 /* Adjust the addend for sign extension of the low 16 bits. */
2574 reloc_entry->addend += 0x8000;
2575 return bfd_reloc_continue;
2578 static bfd_reloc_status_type
2579 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2580 void *data, asection *input_section,
2581 bfd *output_bfd, char **error_message)
2585 /* If this is a relocatable link (output_bfd test tells us), just
2586 call the generic function. Any adjustment will be done at final
2588 if (output_bfd != NULL)
2589 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2590 input_section, output_bfd, error_message);
2592 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2594 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2596 /* Subtract the TOC base address. */
2597 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2598 return bfd_reloc_continue;
2601 static bfd_reloc_status_type
2602 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2603 void *data, asection *input_section,
2604 bfd *output_bfd, char **error_message)
2608 /* If this is a relocatable link (output_bfd test tells us), just
2609 call the generic function. Any adjustment will be done at final
2611 if (output_bfd != NULL)
2612 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2613 input_section, output_bfd, error_message);
2615 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2617 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2619 /* Subtract the TOC base address. */
2620 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2622 /* Adjust the addend for sign extension of the low 16 bits. */
2623 reloc_entry->addend += 0x8000;
2624 return bfd_reloc_continue;
2627 static bfd_reloc_status_type
2628 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2629 void *data, asection *input_section,
2630 bfd *output_bfd, char **error_message)
2633 bfd_size_type octets;
2635 /* If this is a relocatable link (output_bfd test tells us), just
2636 call the generic function. Any adjustment will be done at final
2638 if (output_bfd != NULL)
2639 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2640 input_section, output_bfd, error_message);
2642 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2644 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2646 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2647 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2648 return bfd_reloc_ok;
2651 static bfd_reloc_status_type
2652 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2653 void *data, asection *input_section,
2654 bfd *output_bfd, char **error_message)
2656 /* If this is a relocatable link (output_bfd test tells us), just
2657 call the generic function. Any adjustment will be done at final
2659 if (output_bfd != NULL)
2660 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2661 input_section, output_bfd, error_message);
2663 if (error_message != NULL)
2665 static char buf[60];
2666 sprintf (buf, "generic linker can't handle %s",
2667 reloc_entry->howto->name);
2668 *error_message = buf;
2670 return bfd_reloc_dangerous;
2673 /* Track GOT entries needed for a given symbol. We might need more
2674 than one got entry per symbol. */
2677 struct got_entry *next;
2679 /* The symbol addend that we'll be placing in the GOT. */
2682 /* Unlike other ELF targets, we use separate GOT entries for the same
2683 symbol referenced from different input files. This is to support
2684 automatic multiple TOC/GOT sections, where the TOC base can vary
2685 from one input file to another. After partitioning into TOC groups
2686 we merge entries within the group.
2688 Point to the BFD owning this GOT entry. */
2691 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2692 TLS_TPREL or TLS_DTPREL for tls entries. */
2693 unsigned char tls_type;
2695 /* Non-zero if got.ent points to real entry. */
2696 unsigned char is_indirect;
2698 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2701 bfd_signed_vma refcount;
2703 struct got_entry *ent;
2707 /* The same for PLT. */
2710 struct plt_entry *next;
2716 bfd_signed_vma refcount;
2721 struct ppc64_elf_obj_tdata
2723 struct elf_obj_tdata elf;
2725 /* Shortcuts to dynamic linker sections. */
2729 /* Used during garbage collection. We attach global symbols defined
2730 on removed .opd entries to this section so that the sym is removed. */
2731 asection *deleted_section;
2733 /* TLS local dynamic got entry handling. Support for multiple GOT
2734 sections means we potentially need one of these for each input bfd. */
2735 struct got_entry tlsld_got;
2738 /* A copy of relocs before they are modified for --emit-relocs. */
2739 Elf_Internal_Rela *relocs;
2741 /* Section contents. */
2745 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2746 the reloc to be in the range -32768 to 32767. */
2747 unsigned int has_small_toc_reloc : 1;
2749 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2750 instruction not one we handle. */
2751 unsigned int unexpected_toc_insn : 1;
2754 #define ppc64_elf_tdata(bfd) \
2755 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2757 #define ppc64_tlsld_got(bfd) \
2758 (&ppc64_elf_tdata (bfd)->tlsld_got)
2760 #define is_ppc64_elf(bfd) \
2761 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2762 && elf_object_id (bfd) == PPC64_ELF_DATA)
2764 /* Override the generic function because we store some extras. */
2767 ppc64_elf_mkobject (bfd *abfd)
2769 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2773 /* Fix bad default arch selected for a 64 bit input bfd when the
2774 default is 32 bit. */
2777 ppc64_elf_object_p (bfd *abfd)
2779 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2781 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2783 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2785 /* Relies on arch after 32 bit default being 64 bit default. */
2786 abfd->arch_info = abfd->arch_info->next;
2787 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2793 /* Support for core dump NOTE sections. */
2796 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2798 size_t offset, size;
2800 if (note->descsz != 504)
2804 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2807 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2813 /* Make a ".reg/999" section. */
2814 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2815 size, note->descpos + offset);
2819 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2821 if (note->descsz != 136)
2824 elf_tdata (abfd)->core->pid
2825 = bfd_get_32 (abfd, note->descdata + 24);
2826 elf_tdata (abfd)->core->program
2827 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2828 elf_tdata (abfd)->core->command
2829 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2835 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2848 va_start (ap, note_type);
2849 memset (data, 0, sizeof (data));
2850 strncpy (data + 40, va_arg (ap, const char *), 16);
2851 strncpy (data + 56, va_arg (ap, const char *), 80);
2853 return elfcore_write_note (abfd, buf, bufsiz,
2854 "CORE", note_type, data, sizeof (data));
2865 va_start (ap, note_type);
2866 memset (data, 0, 112);
2867 pid = va_arg (ap, long);
2868 bfd_put_32 (abfd, pid, data + 32);
2869 cursig = va_arg (ap, int);
2870 bfd_put_16 (abfd, cursig, data + 12);
2871 greg = va_arg (ap, const void *);
2872 memcpy (data + 112, greg, 384);
2873 memset (data + 496, 0, 8);
2875 return elfcore_write_note (abfd, buf, bufsiz,
2876 "CORE", note_type, data, sizeof (data));
2881 /* Add extra PPC sections. */
2883 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2885 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2886 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2887 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2888 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2889 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2890 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2891 { NULL, 0, 0, 0, 0 }
2894 enum _ppc64_sec_type {
2900 struct _ppc64_elf_section_data
2902 struct bfd_elf_section_data elf;
2906 /* An array with one entry for each opd function descriptor. */
2907 struct _opd_sec_data
2909 /* Points to the function code section for local opd entries. */
2910 asection **func_sec;
2912 /* After editing .opd, adjust references to opd local syms. */
2916 /* An array for toc sections, indexed by offset/8. */
2917 struct _toc_sec_data
2919 /* Specifies the relocation symbol index used at a given toc offset. */
2922 /* And the relocation addend. */
2927 enum _ppc64_sec_type sec_type:2;
2929 /* Flag set when small branches are detected. Used to
2930 select suitable defaults for the stub group size. */
2931 unsigned int has_14bit_branch:1;
2934 #define ppc64_elf_section_data(sec) \
2935 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2938 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2940 if (!sec->used_by_bfd)
2942 struct _ppc64_elf_section_data *sdata;
2943 bfd_size_type amt = sizeof (*sdata);
2945 sdata = bfd_zalloc (abfd, amt);
2948 sec->used_by_bfd = sdata;
2951 return _bfd_elf_new_section_hook (abfd, sec);
2954 static struct _opd_sec_data *
2955 get_opd_info (asection * sec)
2958 && ppc64_elf_section_data (sec) != NULL
2959 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2960 return &ppc64_elf_section_data (sec)->u.opd;
2965 abiversion (bfd *abfd)
2967 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
2971 set_abiversion (bfd *abfd, int ver)
2973 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
2974 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
2977 /* Parameters for the qsort hook. */
2978 static bfd_boolean synthetic_relocatable;
2980 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2983 compare_symbols (const void *ap, const void *bp)
2985 const asymbol *a = * (const asymbol **) ap;
2986 const asymbol *b = * (const asymbol **) bp;
2988 /* Section symbols first. */
2989 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2991 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2994 /* then .opd symbols. */
2995 if (strcmp (a->section->name, ".opd") == 0
2996 && strcmp (b->section->name, ".opd") != 0)
2998 if (strcmp (a->section->name, ".opd") != 0
2999 && strcmp (b->section->name, ".opd") == 0)
3002 /* then other code symbols. */
3003 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3004 == (SEC_CODE | SEC_ALLOC)
3005 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3006 != (SEC_CODE | SEC_ALLOC))
3009 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3010 != (SEC_CODE | SEC_ALLOC)
3011 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3012 == (SEC_CODE | SEC_ALLOC))
3015 if (synthetic_relocatable)
3017 if (a->section->id < b->section->id)
3020 if (a->section->id > b->section->id)
3024 if (a->value + a->section->vma < b->value + b->section->vma)
3027 if (a->value + a->section->vma > b->value + b->section->vma)
3030 /* For syms with the same value, prefer strong dynamic global function
3031 syms over other syms. */
3032 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3035 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3038 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3041 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3044 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3047 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3050 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3053 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3059 /* Search SYMS for a symbol of the given VALUE. */
3062 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
3070 mid = (lo + hi) >> 1;
3071 if (syms[mid]->value + syms[mid]->section->vma < value)
3073 else if (syms[mid]->value + syms[mid]->section->vma > value)
3083 mid = (lo + hi) >> 1;
3084 if (syms[mid]->section->id < id)
3086 else if (syms[mid]->section->id > id)
3088 else if (syms[mid]->value < value)
3090 else if (syms[mid]->value > value)
3100 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3102 bfd_vma vma = *(bfd_vma *) ptr;
3103 return ((section->flags & SEC_ALLOC) != 0
3104 && section->vma <= vma
3105 && vma < section->vma + section->size);
3108 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3109 entry syms. Also generate @plt symbols for the glink branch table. */
3112 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3113 long static_count, asymbol **static_syms,
3114 long dyn_count, asymbol **dyn_syms,
3121 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3122 asection *opd = NULL;
3123 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3125 int abi = abiversion (abfd);
3131 opd = bfd_get_section_by_name (abfd, ".opd");
3132 if (opd == NULL && abi == 1)
3136 symcount = static_count;
3138 symcount += dyn_count;
3142 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3146 if (!relocatable && static_count != 0 && dyn_count != 0)
3148 /* Use both symbol tables. */
3149 memcpy (syms, static_syms, static_count * sizeof (*syms));
3150 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3152 else if (!relocatable && static_count == 0)
3153 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3155 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3157 synthetic_relocatable = relocatable;
3158 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3160 if (!relocatable && symcount > 1)
3163 /* Trim duplicate syms, since we may have merged the normal and
3164 dynamic symbols. Actually, we only care about syms that have
3165 different values, so trim any with the same value. */
3166 for (i = 1, j = 1; i < symcount; ++i)
3167 if (syms[i - 1]->value + syms[i - 1]->section->vma
3168 != syms[i]->value + syms[i]->section->vma)
3169 syms[j++] = syms[i];
3174 if (strcmp (syms[i]->section->name, ".opd") == 0)
3178 for (; i < symcount; ++i)
3179 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3180 != (SEC_CODE | SEC_ALLOC))
3181 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3185 for (; i < symcount; ++i)
3186 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3190 for (; i < symcount; ++i)
3191 if (strcmp (syms[i]->section->name, ".opd") != 0)
3195 for (; i < symcount; ++i)
3196 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3197 != (SEC_CODE | SEC_ALLOC))
3205 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3210 if (opdsymend == secsymend)
3213 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3214 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3218 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3225 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3229 while (r < opd->relocation + relcount
3230 && r->address < syms[i]->value + opd->vma)
3233 if (r == opd->relocation + relcount)
3236 if (r->address != syms[i]->value + opd->vma)
3239 if (r->howto->type != R_PPC64_ADDR64)
3242 sym = *r->sym_ptr_ptr;
3243 if (!sym_exists_at (syms, opdsymend, symcount,
3244 sym->section->id, sym->value + r->addend))
3247 size += sizeof (asymbol);
3248 size += strlen (syms[i]->name) + 2;
3252 s = *ret = bfd_malloc (size);
3259 names = (char *) (s + count);
3261 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3265 while (r < opd->relocation + relcount
3266 && r->address < syms[i]->value + opd->vma)
3269 if (r == opd->relocation + relcount)
3272 if (r->address != syms[i]->value + opd->vma)
3275 if (r->howto->type != R_PPC64_ADDR64)
3278 sym = *r->sym_ptr_ptr;
3279 if (!sym_exists_at (syms, opdsymend, symcount,
3280 sym->section->id, sym->value + r->addend))
3285 s->flags |= BSF_SYNTHETIC;
3286 s->section = sym->section;
3287 s->value = sym->value + r->addend;
3290 len = strlen (syms[i]->name);
3291 memcpy (names, syms[i]->name, len + 1);
3293 /* Have udata.p point back to the original symbol this
3294 synthetic symbol was derived from. */
3295 s->udata.p = syms[i];
3302 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3303 bfd_byte *contents = NULL;
3306 bfd_vma glink_vma = 0, resolv_vma = 0;
3307 asection *dynamic, *glink = NULL, *relplt = NULL;
3310 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3312 free_contents_and_exit:
3320 for (i = secsymend; i < opdsymend; ++i)
3324 /* Ignore bogus symbols. */
3325 if (syms[i]->value > opd->size - 8)
3328 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3329 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3332 size += sizeof (asymbol);
3333 size += strlen (syms[i]->name) + 2;
3337 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3339 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3341 bfd_byte *dynbuf, *extdyn, *extdynend;
3343 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3345 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3346 goto free_contents_and_exit;
3348 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3349 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3352 extdynend = extdyn + dynamic->size;
3353 for (; extdyn < extdynend; extdyn += extdynsize)
3355 Elf_Internal_Dyn dyn;
3356 (*swap_dyn_in) (abfd, extdyn, &dyn);
3358 if (dyn.d_tag == DT_NULL)
3361 if (dyn.d_tag == DT_PPC64_GLINK)
3363 /* The first glink stub starts at offset 32; see
3364 comment in ppc64_elf_finish_dynamic_sections. */
3365 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3366 /* The .glink section usually does not survive the final
3367 link; search for the section (usually .text) where the
3368 glink stubs now reside. */
3369 glink = bfd_sections_find_if (abfd, section_covers_vma,
3380 /* Determine __glink trampoline by reading the relative branch
3381 from the first glink stub. */
3383 unsigned int off = 0;
3385 while (bfd_get_section_contents (abfd, glink, buf,
3386 glink_vma + off - glink->vma, 4))
3388 unsigned int insn = bfd_get_32 (abfd, buf);
3390 if ((insn & ~0x3fffffc) == 0)
3392 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3401 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3403 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3406 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3407 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3408 goto free_contents_and_exit;
3410 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3411 size += plt_count * sizeof (asymbol);
3413 p = relplt->relocation;
3414 for (i = 0; i < plt_count; i++, p++)
3416 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3418 size += sizeof ("+0x") - 1 + 16;
3423 s = *ret = bfd_malloc (size);
3425 goto free_contents_and_exit;
3427 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3429 for (i = secsymend; i < opdsymend; ++i)
3433 if (syms[i]->value > opd->size - 8)
3436 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3437 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3441 asection *sec = abfd->sections;
3448 long mid = (lo + hi) >> 1;
3449 if (syms[mid]->section->vma < ent)
3451 else if (syms[mid]->section->vma > ent)
3455 sec = syms[mid]->section;
3460 if (lo >= hi && lo > codesecsym)
3461 sec = syms[lo - 1]->section;
3463 for (; sec != NULL; sec = sec->next)
3467 /* SEC_LOAD may not be set if SEC is from a separate debug
3469 if ((sec->flags & SEC_ALLOC) == 0)
3471 if ((sec->flags & SEC_CODE) != 0)
3474 s->flags |= BSF_SYNTHETIC;
3475 s->value = ent - s->section->vma;
3478 len = strlen (syms[i]->name);
3479 memcpy (names, syms[i]->name, len + 1);
3481 /* Have udata.p point back to the original symbol this
3482 synthetic symbol was derived from. */
3483 s->udata.p = syms[i];
3489 if (glink != NULL && relplt != NULL)
3493 /* Add a symbol for the main glink trampoline. */
3494 memset (s, 0, sizeof *s);
3496 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3498 s->value = resolv_vma - glink->vma;
3500 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3501 names += sizeof ("__glink_PLTresolve");
3506 /* FIXME: It would be very much nicer to put sym@plt on the
3507 stub rather than on the glink branch table entry. The
3508 objdump disassembler would then use a sensible symbol
3509 name on plt calls. The difficulty in doing so is
3510 a) finding the stubs, and,
3511 b) matching stubs against plt entries, and,
3512 c) there can be multiple stubs for a given plt entry.
3514 Solving (a) could be done by code scanning, but older
3515 ppc64 binaries used different stubs to current code.
3516 (b) is the tricky one since you need to known the toc
3517 pointer for at least one function that uses a pic stub to
3518 be able to calculate the plt address referenced.
3519 (c) means gdb would need to set multiple breakpoints (or
3520 find the glink branch itself) when setting breakpoints
3521 for pending shared library loads. */
3522 p = relplt->relocation;
3523 for (i = 0; i < plt_count; i++, p++)
3527 *s = **p->sym_ptr_ptr;
3528 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3529 we are defining a symbol, ensure one of them is set. */
3530 if ((s->flags & BSF_LOCAL) == 0)
3531 s->flags |= BSF_GLOBAL;
3532 s->flags |= BSF_SYNTHETIC;
3534 s->value = glink_vma - glink->vma;
3537 len = strlen ((*p->sym_ptr_ptr)->name);
3538 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3542 memcpy (names, "+0x", sizeof ("+0x") - 1);
3543 names += sizeof ("+0x") - 1;
3544 bfd_sprintf_vma (abfd, names, p->addend);
3545 names += strlen (names);
3547 memcpy (names, "@plt", sizeof ("@plt"));
3548 names += sizeof ("@plt");
3568 /* The following functions are specific to the ELF linker, while
3569 functions above are used generally. Those named ppc64_elf_* are
3570 called by the main ELF linker code. They appear in this file more
3571 or less in the order in which they are called. eg.
3572 ppc64_elf_check_relocs is called early in the link process,
3573 ppc64_elf_finish_dynamic_sections is one of the last functions
3576 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3577 functions have both a function code symbol and a function descriptor
3578 symbol. A call to foo in a relocatable object file looks like:
3585 The function definition in another object file might be:
3589 . .quad .TOC.@tocbase
3595 When the linker resolves the call during a static link, the branch
3596 unsurprisingly just goes to .foo and the .opd information is unused.
3597 If the function definition is in a shared library, things are a little
3598 different: The call goes via a plt call stub, the opd information gets
3599 copied to the plt, and the linker patches the nop.
3607 . std 2,40(1) # in practice, the call stub
3608 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3609 . addi 11,11,Lfoo@toc@l # this is the general idea
3617 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3619 The "reloc ()" notation is supposed to indicate that the linker emits
3620 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3623 What are the difficulties here? Well, firstly, the relocations
3624 examined by the linker in check_relocs are against the function code
3625 sym .foo, while the dynamic relocation in the plt is emitted against
3626 the function descriptor symbol, foo. Somewhere along the line, we need
3627 to carefully copy dynamic link information from one symbol to the other.
3628 Secondly, the generic part of the elf linker will make .foo a dynamic
3629 symbol as is normal for most other backends. We need foo dynamic
3630 instead, at least for an application final link. However, when
3631 creating a shared library containing foo, we need to have both symbols
3632 dynamic so that references to .foo are satisfied during the early
3633 stages of linking. Otherwise the linker might decide to pull in a
3634 definition from some other object, eg. a static library.
3636 Update: As of August 2004, we support a new convention. Function
3637 calls may use the function descriptor symbol, ie. "bl foo". This
3638 behaves exactly as "bl .foo". */
3640 /* Of those relocs that might be copied as dynamic relocs, this function
3641 selects those that must be copied when linking a shared library,
3642 even when the symbol is local. */
3645 must_be_dyn_reloc (struct bfd_link_info *info,
3646 enum elf_ppc64_reloc_type r_type)
3658 case R_PPC64_TPREL16:
3659 case R_PPC64_TPREL16_LO:
3660 case R_PPC64_TPREL16_HI:
3661 case R_PPC64_TPREL16_HA:
3662 case R_PPC64_TPREL16_DS:
3663 case R_PPC64_TPREL16_LO_DS:
3664 case R_PPC64_TPREL16_HIGH:
3665 case R_PPC64_TPREL16_HIGHA:
3666 case R_PPC64_TPREL16_HIGHER:
3667 case R_PPC64_TPREL16_HIGHERA:
3668 case R_PPC64_TPREL16_HIGHEST:
3669 case R_PPC64_TPREL16_HIGHESTA:
3670 case R_PPC64_TPREL64:
3671 return !info->executable;
3675 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3676 copying dynamic variables from a shared lib into an app's dynbss
3677 section, and instead use a dynamic relocation to point into the
3678 shared lib. With code that gcc generates, it's vital that this be
3679 enabled; In the PowerPC64 ABI, the address of a function is actually
3680 the address of a function descriptor, which resides in the .opd
3681 section. gcc uses the descriptor directly rather than going via the
3682 GOT as some other ABI's do, which means that initialized function
3683 pointers must reference the descriptor. Thus, a function pointer
3684 initialized to the address of a function in a shared library will
3685 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3686 redefines the function descriptor symbol to point to the copy. This
3687 presents a problem as a plt entry for that function is also
3688 initialized from the function descriptor symbol and the copy reloc
3689 may not be initialized first. */
3690 #define ELIMINATE_COPY_RELOCS 1
3692 /* Section name for stubs is the associated section name plus this
3694 #define STUB_SUFFIX ".stub"
3697 ppc_stub_long_branch:
3698 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3699 destination, but a 24 bit branch in a stub section will reach.
3702 ppc_stub_plt_branch:
3703 Similar to the above, but a 24 bit branch in the stub section won't
3704 reach its destination.
3705 . addis %r11,%r2,xxx@toc@ha
3706 . ld %r12,xxx@toc@l(%r11)
3711 Used to call a function in a shared library. If it so happens that
3712 the plt entry referenced crosses a 64k boundary, then an extra
3713 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3715 . addis %r11,%r2,xxx@toc@ha
3716 . ld %r12,xxx+0@toc@l(%r11)
3718 . ld %r2,xxx+8@toc@l(%r11)
3719 . ld %r11,xxx+16@toc@l(%r11)
3722 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3723 code to adjust the value and save r2 to support multiple toc sections.
3724 A ppc_stub_long_branch with an r2 offset looks like:
3726 . addis %r2,%r2,off@ha
3727 . addi %r2,%r2,off@l
3730 A ppc_stub_plt_branch with an r2 offset looks like:
3732 . addis %r11,%r2,xxx@toc@ha
3733 . ld %r12,xxx@toc@l(%r11)
3734 . addis %r2,%r2,off@ha
3735 . addi %r2,%r2,off@l
3739 In cases where the "addis" instruction would add zero, the "addis" is
3740 omitted and following instructions modified slightly in some cases.
3743 enum ppc_stub_type {
3745 ppc_stub_long_branch,
3746 ppc_stub_long_branch_r2off,
3747 ppc_stub_plt_branch,
3748 ppc_stub_plt_branch_r2off,
3750 ppc_stub_plt_call_r2save
3753 struct ppc_stub_hash_entry {
3755 /* Base hash table entry structure. */
3756 struct bfd_hash_entry root;
3758 enum ppc_stub_type stub_type;
3760 /* The stub section. */
3763 /* Offset within stub_sec of the beginning of this stub. */
3764 bfd_vma stub_offset;
3766 /* Given the symbol's value and its section we can determine its final
3767 value when building the stubs (so the stub knows where to jump. */
3768 bfd_vma target_value;
3769 asection *target_section;
3771 /* The symbol table entry, if any, that this was derived from. */
3772 struct ppc_link_hash_entry *h;
3773 struct plt_entry *plt_ent;
3775 /* Where this stub is being called from, or, in the case of combined
3776 stub sections, the first input section in the group. */
3779 /* Symbol st_other. */
3780 unsigned char other;
3783 struct ppc_branch_hash_entry {
3785 /* Base hash table entry structure. */
3786 struct bfd_hash_entry root;
3788 /* Offset within branch lookup table. */
3789 unsigned int offset;
3791 /* Generation marker. */
3795 /* Used to track dynamic relocations for local symbols. */
3796 struct ppc_dyn_relocs
3798 struct ppc_dyn_relocs *next;
3800 /* The input section of the reloc. */
3803 /* Total number of relocs copied for the input section. */
3804 unsigned int count : 31;
3806 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3807 unsigned int ifunc : 1;
3810 struct ppc_link_hash_entry
3812 struct elf_link_hash_entry elf;
3815 /* A pointer to the most recently used stub hash entry against this
3817 struct ppc_stub_hash_entry *stub_cache;
3819 /* A pointer to the next symbol starting with a '.' */
3820 struct ppc_link_hash_entry *next_dot_sym;
3823 /* Track dynamic relocs copied for this symbol. */
3824 struct elf_dyn_relocs *dyn_relocs;
3826 /* Link between function code and descriptor symbols. */
3827 struct ppc_link_hash_entry *oh;
3829 /* Flag function code and descriptor symbols. */
3830 unsigned int is_func:1;
3831 unsigned int is_func_descriptor:1;
3832 unsigned int fake:1;
3834 /* Whether global opd/toc sym has been adjusted or not.
3835 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3836 should be set for all globals defined in any opd/toc section. */
3837 unsigned int adjust_done:1;
3839 /* Set if we twiddled this symbol to weak at some stage. */
3840 unsigned int was_undefined:1;
3842 /* Contexts in which symbol is used in the GOT (or TOC).
3843 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3844 corresponding relocs are encountered during check_relocs.
3845 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3846 indicate the corresponding GOT entry type is not needed.
3847 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3848 a TPREL one. We use a separate flag rather than setting TPREL
3849 just for convenience in distinguishing the two cases. */
3850 #define TLS_GD 1 /* GD reloc. */
3851 #define TLS_LD 2 /* LD reloc. */
3852 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3853 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3854 #define TLS_TLS 16 /* Any TLS reloc. */
3855 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3856 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3857 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3858 unsigned char tls_mask;
3861 /* ppc64 ELF linker hash table. */
3863 struct ppc_link_hash_table
3865 struct elf_link_hash_table elf;
3867 /* The stub hash table. */
3868 struct bfd_hash_table stub_hash_table;
3870 /* Another hash table for plt_branch stubs. */
3871 struct bfd_hash_table branch_hash_table;
3873 /* Hash table for function prologue tocsave. */
3874 htab_t tocsave_htab;
3876 /* Linker stub bfd. */
3879 /* Linker call-backs. */
3880 asection * (*add_stub_section) (const char *, asection *);
3881 void (*layout_sections_again) (void);
3883 /* Array to keep track of which stub sections have been created, and
3884 information on stub grouping. */
3886 /* This is the section to which stubs in the group will be attached. */
3888 /* The stub section. */
3890 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3894 /* Temp used when calculating TOC pointers. */
3897 asection *toc_first_sec;
3899 /* Highest input section id. */
3902 /* Highest output section index. */
3905 /* Used when adding symbols. */
3906 struct ppc_link_hash_entry *dot_syms;
3908 /* List of input sections for each output section. */
3909 asection **input_list;
3911 /* Shortcuts to get to dynamic linker sections. */
3918 asection *glink_eh_frame;
3920 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3921 struct ppc_link_hash_entry *tls_get_addr;
3922 struct ppc_link_hash_entry *tls_get_addr_fd;
3924 /* The size of reliplt used by got entry relocs. */
3925 bfd_size_type got_reli_size;
3928 unsigned long stub_count[ppc_stub_plt_call_r2save];
3930 /* Number of stubs against global syms. */
3931 unsigned long stub_globals;
3933 /* Alignment of PLT call stubs. */
3934 unsigned int plt_stub_align:4;
3936 /* Set if we're linking code with function descriptors. */
3937 unsigned int opd_abi:1;
3939 /* Set if PLT call stubs should load r11. */
3940 unsigned int plt_static_chain:1;
3942 /* Set if PLT call stubs need a read-read barrier. */
3943 unsigned int plt_thread_safe:1;
3945 /* Set if we should emit symbols for stubs. */
3946 unsigned int emit_stub_syms:1;
3948 /* Set if __tls_get_addr optimization should not be done. */
3949 unsigned int no_tls_get_addr_opt:1;
3951 /* Support for multiple toc sections. */
3952 unsigned int do_multi_toc:1;
3953 unsigned int multi_toc_needed:1;
3954 unsigned int second_toc_pass:1;
3955 unsigned int do_toc_opt:1;
3958 unsigned int stub_error:1;
3960 /* Temp used by ppc64_elf_process_dot_syms. */
3961 unsigned int twiddled_syms:1;
3963 /* Incremented every time we size stubs. */
3964 unsigned int stub_iteration;
3966 /* Small local sym cache. */
3967 struct sym_cache sym_cache;
3970 /* Rename some of the generic section flags to better document how they
3973 /* Nonzero if this section has TLS related relocations. */
3974 #define has_tls_reloc sec_flg0
3976 /* Nonzero if this section has a call to __tls_get_addr. */
3977 #define has_tls_get_addr_call sec_flg1
3979 /* Nonzero if this section has any toc or got relocs. */
3980 #define has_toc_reloc sec_flg2
3982 /* Nonzero if this section has a call to another section that uses
3984 #define makes_toc_func_call sec_flg3
3986 /* Recursion protection when determining above flag. */
3987 #define call_check_in_progress sec_flg4
3988 #define call_check_done sec_flg5
3990 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3992 #define ppc_hash_table(p) \
3993 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3994 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3996 #define ppc_stub_hash_lookup(table, string, create, copy) \
3997 ((struct ppc_stub_hash_entry *) \
3998 bfd_hash_lookup ((table), (string), (create), (copy)))
4000 #define ppc_branch_hash_lookup(table, string, create, copy) \
4001 ((struct ppc_branch_hash_entry *) \
4002 bfd_hash_lookup ((table), (string), (create), (copy)))
4004 /* Create an entry in the stub hash table. */
4006 static struct bfd_hash_entry *
4007 stub_hash_newfunc (struct bfd_hash_entry *entry,
4008 struct bfd_hash_table *table,
4011 /* Allocate the structure if it has not already been allocated by a
4015 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4020 /* Call the allocation method of the superclass. */
4021 entry = bfd_hash_newfunc (entry, table, string);
4024 struct ppc_stub_hash_entry *eh;
4026 /* Initialize the local fields. */
4027 eh = (struct ppc_stub_hash_entry *) entry;
4028 eh->stub_type = ppc_stub_none;
4029 eh->stub_sec = NULL;
4030 eh->stub_offset = 0;
4031 eh->target_value = 0;
4032 eh->target_section = NULL;
4042 /* Create an entry in the branch hash table. */
4044 static struct bfd_hash_entry *
4045 branch_hash_newfunc (struct bfd_hash_entry *entry,
4046 struct bfd_hash_table *table,
4049 /* Allocate the structure if it has not already been allocated by a
4053 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4058 /* Call the allocation method of the superclass. */
4059 entry = bfd_hash_newfunc (entry, table, string);
4062 struct ppc_branch_hash_entry *eh;
4064 /* Initialize the local fields. */
4065 eh = (struct ppc_branch_hash_entry *) entry;
4073 /* Create an entry in a ppc64 ELF linker hash table. */
4075 static struct bfd_hash_entry *
4076 link_hash_newfunc (struct bfd_hash_entry *entry,
4077 struct bfd_hash_table *table,
4080 /* Allocate the structure if it has not already been allocated by a
4084 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4089 /* Call the allocation method of the superclass. */
4090 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4093 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4095 memset (&eh->u.stub_cache, 0,
4096 (sizeof (struct ppc_link_hash_entry)
4097 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4099 /* When making function calls, old ABI code references function entry
4100 points (dot symbols), while new ABI code references the function
4101 descriptor symbol. We need to make any combination of reference and
4102 definition work together, without breaking archive linking.
4104 For a defined function "foo" and an undefined call to "bar":
4105 An old object defines "foo" and ".foo", references ".bar" (possibly
4107 A new object defines "foo" and references "bar".
4109 A new object thus has no problem with its undefined symbols being
4110 satisfied by definitions in an old object. On the other hand, the
4111 old object won't have ".bar" satisfied by a new object.
4113 Keep a list of newly added dot-symbols. */
4115 if (string[0] == '.')
4117 struct ppc_link_hash_table *htab;
4119 htab = (struct ppc_link_hash_table *) table;
4120 eh->u.next_dot_sym = htab->dot_syms;
4121 htab->dot_syms = eh;
4128 struct tocsave_entry {
4134 tocsave_htab_hash (const void *p)
4136 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4137 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4141 tocsave_htab_eq (const void *p1, const void *p2)
4143 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4144 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4145 return e1->sec == e2->sec && e1->offset == e2->offset;
4148 /* Create a ppc64 ELF linker hash table. */
4150 static struct bfd_link_hash_table *
4151 ppc64_elf_link_hash_table_create (bfd *abfd)
4153 struct ppc_link_hash_table *htab;
4154 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4156 htab = bfd_zmalloc (amt);
4160 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4161 sizeof (struct ppc_link_hash_entry),
4168 /* Init the stub hash table too. */
4169 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4170 sizeof (struct ppc_stub_hash_entry)))
4173 /* And the branch hash table. */
4174 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4175 sizeof (struct ppc_branch_hash_entry)))
4178 htab->tocsave_htab = htab_try_create (1024,
4182 if (htab->tocsave_htab == NULL)
4185 /* Initializing two fields of the union is just cosmetic. We really
4186 only care about glist, but when compiled on a 32-bit host the
4187 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4188 debugger inspection of these fields look nicer. */
4189 htab->elf.init_got_refcount.refcount = 0;
4190 htab->elf.init_got_refcount.glist = NULL;
4191 htab->elf.init_plt_refcount.refcount = 0;
4192 htab->elf.init_plt_refcount.glist = NULL;
4193 htab->elf.init_got_offset.offset = 0;
4194 htab->elf.init_got_offset.glist = NULL;
4195 htab->elf.init_plt_offset.offset = 0;
4196 htab->elf.init_plt_offset.glist = NULL;
4198 return &htab->elf.root;
4201 /* Free the derived linker hash table. */
4204 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4206 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4208 bfd_hash_table_free (&htab->stub_hash_table);
4209 bfd_hash_table_free (&htab->branch_hash_table);
4210 if (htab->tocsave_htab)
4211 htab_delete (htab->tocsave_htab);
4212 _bfd_elf_link_hash_table_free (hash);
4215 /* Create sections for linker generated code. */
4218 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4220 struct ppc_link_hash_table *htab;
4223 htab = ppc_hash_table (info);
4225 /* Create .sfpr for code to save and restore fp regs. */
4226 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4227 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4228 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4230 if (htab->sfpr == NULL
4231 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4234 /* Create .glink for lazy dynamic linking support. */
4235 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4237 if (htab->glink == NULL
4238 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4241 if (!info->no_ld_generated_unwind_info)
4243 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4244 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4245 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4248 if (htab->glink_eh_frame == NULL
4249 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4253 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4254 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4255 if (htab->elf.iplt == NULL
4256 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4259 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4260 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4262 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4263 if (htab->elf.irelplt == NULL
4264 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4267 /* Create branch lookup table for plt_branch stubs. */
4268 flags = (SEC_ALLOC | SEC_LOAD
4269 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4270 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4272 if (htab->brlt == NULL
4273 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4279 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4280 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4281 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4284 if (htab->relbrlt == NULL
4285 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4291 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4294 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4296 struct ppc_link_hash_table *htab;
4298 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4300 /* Always hook our dynamic sections into the first bfd, which is the
4301 linker created stub bfd. This ensures that the GOT header is at
4302 the start of the output TOC section. */
4303 htab = ppc_hash_table (info);
4306 htab->stub_bfd = abfd;
4307 htab->elf.dynobj = abfd;
4309 if (info->relocatable)
4312 return create_linkage_sections (htab->elf.dynobj, info);
4315 /* Build a name for an entry in the stub hash table. */
4318 ppc_stub_name (const asection *input_section,
4319 const asection *sym_sec,
4320 const struct ppc_link_hash_entry *h,
4321 const Elf_Internal_Rela *rel)
4326 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4327 offsets from a sym as a branch target? In fact, we could
4328 probably assume the addend is always zero. */
4329 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4333 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4334 stub_name = bfd_malloc (len);
4335 if (stub_name == NULL)
4338 len = sprintf (stub_name, "%08x.%s+%x",
4339 input_section->id & 0xffffffff,
4340 h->elf.root.root.string,
4341 (int) rel->r_addend & 0xffffffff);
4345 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4346 stub_name = bfd_malloc (len);
4347 if (stub_name == NULL)
4350 len = sprintf (stub_name, "%08x.%x:%x+%x",
4351 input_section->id & 0xffffffff,
4352 sym_sec->id & 0xffffffff,
4353 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4354 (int) rel->r_addend & 0xffffffff);
4356 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4357 stub_name[len - 2] = 0;
4361 /* Look up an entry in the stub hash. Stub entries are cached because
4362 creating the stub name takes a bit of time. */
4364 static struct ppc_stub_hash_entry *
4365 ppc_get_stub_entry (const asection *input_section,
4366 const asection *sym_sec,
4367 struct ppc_link_hash_entry *h,
4368 const Elf_Internal_Rela *rel,
4369 struct ppc_link_hash_table *htab)
4371 struct ppc_stub_hash_entry *stub_entry;
4372 const asection *id_sec;
4374 /* If this input section is part of a group of sections sharing one
4375 stub section, then use the id of the first section in the group.
4376 Stub names need to include a section id, as there may well be
4377 more than one stub used to reach say, printf, and we need to
4378 distinguish between them. */
4379 id_sec = htab->stub_group[input_section->id].link_sec;
4381 if (h != NULL && h->u.stub_cache != NULL
4382 && h->u.stub_cache->h == h
4383 && h->u.stub_cache->id_sec == id_sec)
4385 stub_entry = h->u.stub_cache;
4391 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4392 if (stub_name == NULL)
4395 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4396 stub_name, FALSE, FALSE);
4398 h->u.stub_cache = stub_entry;
4406 /* Add a new stub entry to the stub hash. Not all fields of the new
4407 stub entry are initialised. */
4409 static struct ppc_stub_hash_entry *
4410 ppc_add_stub (const char *stub_name,
4412 struct bfd_link_info *info)
4414 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4417 struct ppc_stub_hash_entry *stub_entry;
4419 link_sec = htab->stub_group[section->id].link_sec;
4420 stub_sec = htab->stub_group[section->id].stub_sec;
4421 if (stub_sec == NULL)
4423 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4424 if (stub_sec == NULL)
4430 namelen = strlen (link_sec->name);
4431 len = namelen + sizeof (STUB_SUFFIX);
4432 s_name = bfd_alloc (htab->stub_bfd, len);
4436 memcpy (s_name, link_sec->name, namelen);
4437 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4438 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4439 if (stub_sec == NULL)
4441 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4443 htab->stub_group[section->id].stub_sec = stub_sec;
4446 /* Enter this entry into the linker stub hash table. */
4447 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4449 if (stub_entry == NULL)
4451 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4452 section->owner, stub_name);
4456 stub_entry->stub_sec = stub_sec;
4457 stub_entry->stub_offset = 0;
4458 stub_entry->id_sec = link_sec;
4462 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4463 not already done. */
4466 create_got_section (bfd *abfd, struct bfd_link_info *info)
4468 asection *got, *relgot;
4470 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4472 if (!is_ppc64_elf (abfd))
4478 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4481 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4482 | SEC_LINKER_CREATED);
4484 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4486 || !bfd_set_section_alignment (abfd, got, 3))
4489 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4490 flags | SEC_READONLY);
4492 || ! bfd_set_section_alignment (abfd, relgot, 3))
4495 ppc64_elf_tdata (abfd)->got = got;
4496 ppc64_elf_tdata (abfd)->relgot = relgot;
4500 /* Create the dynamic sections, and set up shortcuts. */
4503 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4505 struct ppc_link_hash_table *htab;
4507 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4510 htab = ppc_hash_table (info);
4514 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4516 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4518 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4519 || (!info->shared && !htab->relbss))
4525 /* Follow indirect and warning symbol links. */
4527 static inline struct bfd_link_hash_entry *
4528 follow_link (struct bfd_link_hash_entry *h)
4530 while (h->type == bfd_link_hash_indirect
4531 || h->type == bfd_link_hash_warning)
4536 static inline struct elf_link_hash_entry *
4537 elf_follow_link (struct elf_link_hash_entry *h)
4539 return (struct elf_link_hash_entry *) follow_link (&h->root);
4542 static inline struct ppc_link_hash_entry *
4543 ppc_follow_link (struct ppc_link_hash_entry *h)
4545 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4548 /* Merge PLT info on FROM with that on TO. */
4551 move_plt_plist (struct ppc_link_hash_entry *from,
4552 struct ppc_link_hash_entry *to)
4554 if (from->elf.plt.plist != NULL)
4556 if (to->elf.plt.plist != NULL)
4558 struct plt_entry **entp;
4559 struct plt_entry *ent;
4561 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4563 struct plt_entry *dent;
4565 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4566 if (dent->addend == ent->addend)
4568 dent->plt.refcount += ent->plt.refcount;
4575 *entp = to->elf.plt.plist;
4578 to->elf.plt.plist = from->elf.plt.plist;
4579 from->elf.plt.plist = NULL;
4583 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4586 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4587 struct elf_link_hash_entry *dir,
4588 struct elf_link_hash_entry *ind)
4590 struct ppc_link_hash_entry *edir, *eind;
4592 edir = (struct ppc_link_hash_entry *) dir;
4593 eind = (struct ppc_link_hash_entry *) ind;
4595 edir->is_func |= eind->is_func;
4596 edir->is_func_descriptor |= eind->is_func_descriptor;
4597 edir->tls_mask |= eind->tls_mask;
4598 if (eind->oh != NULL)
4599 edir->oh = ppc_follow_link (eind->oh);
4601 /* If called to transfer flags for a weakdef during processing
4602 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4603 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4604 if (!(ELIMINATE_COPY_RELOCS
4605 && eind->elf.root.type != bfd_link_hash_indirect
4606 && edir->elf.dynamic_adjusted))
4607 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4609 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4610 edir->elf.ref_regular |= eind->elf.ref_regular;
4611 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4612 edir->elf.needs_plt |= eind->elf.needs_plt;
4613 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4615 /* Copy over any dynamic relocs we may have on the indirect sym. */
4616 if (eind->dyn_relocs != NULL)
4618 if (edir->dyn_relocs != NULL)
4620 struct elf_dyn_relocs **pp;
4621 struct elf_dyn_relocs *p;
4623 /* Add reloc counts against the indirect sym to the direct sym
4624 list. Merge any entries against the same section. */
4625 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4627 struct elf_dyn_relocs *q;
4629 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4630 if (q->sec == p->sec)
4632 q->pc_count += p->pc_count;
4633 q->count += p->count;
4640 *pp = edir->dyn_relocs;
4643 edir->dyn_relocs = eind->dyn_relocs;
4644 eind->dyn_relocs = NULL;
4647 /* If we were called to copy over info for a weak sym, that's all.
4648 You might think dyn_relocs need not be copied over; After all,
4649 both syms will be dynamic or both non-dynamic so we're just
4650 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4651 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4652 dyn_relocs in read-only sections, and it does so on what is the
4654 if (eind->elf.root.type != bfd_link_hash_indirect)
4657 /* Copy over got entries that we may have already seen to the
4658 symbol which just became indirect. */
4659 if (eind->elf.got.glist != NULL)
4661 if (edir->elf.got.glist != NULL)
4663 struct got_entry **entp;
4664 struct got_entry *ent;
4666 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4668 struct got_entry *dent;
4670 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4671 if (dent->addend == ent->addend
4672 && dent->owner == ent->owner
4673 && dent->tls_type == ent->tls_type)
4675 dent->got.refcount += ent->got.refcount;
4682 *entp = edir->elf.got.glist;
4685 edir->elf.got.glist = eind->elf.got.glist;
4686 eind->elf.got.glist = NULL;
4689 /* And plt entries. */
4690 move_plt_plist (eind, edir);
4692 if (eind->elf.dynindx != -1)
4694 if (edir->elf.dynindx != -1)
4695 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4696 edir->elf.dynstr_index);
4697 edir->elf.dynindx = eind->elf.dynindx;
4698 edir->elf.dynstr_index = eind->elf.dynstr_index;
4699 eind->elf.dynindx = -1;
4700 eind->elf.dynstr_index = 0;
4704 /* Find the function descriptor hash entry from the given function code
4705 hash entry FH. Link the entries via their OH fields. */
4707 static struct ppc_link_hash_entry *
4708 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4710 struct ppc_link_hash_entry *fdh = fh->oh;
4714 const char *fd_name = fh->elf.root.root.string + 1;
4716 fdh = (struct ppc_link_hash_entry *)
4717 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4721 fdh->is_func_descriptor = 1;
4727 return ppc_follow_link (fdh);
4730 /* Make a fake function descriptor sym for the code sym FH. */
4732 static struct ppc_link_hash_entry *
4733 make_fdh (struct bfd_link_info *info,
4734 struct ppc_link_hash_entry *fh)
4738 struct bfd_link_hash_entry *bh;
4739 struct ppc_link_hash_entry *fdh;
4741 abfd = fh->elf.root.u.undef.abfd;
4742 newsym = bfd_make_empty_symbol (abfd);
4743 newsym->name = fh->elf.root.root.string + 1;
4744 newsym->section = bfd_und_section_ptr;
4746 newsym->flags = BSF_WEAK;
4749 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4750 newsym->flags, newsym->section,
4751 newsym->value, NULL, FALSE, FALSE,
4755 fdh = (struct ppc_link_hash_entry *) bh;
4756 fdh->elf.non_elf = 0;
4758 fdh->is_func_descriptor = 1;
4765 /* Fix function descriptor symbols defined in .opd sections to be
4769 ppc64_elf_add_symbol_hook (bfd *ibfd,
4770 struct bfd_link_info *info,
4771 Elf_Internal_Sym *isym,
4773 flagword *flags ATTRIBUTE_UNUSED,
4775 bfd_vma *value ATTRIBUTE_UNUSED)
4777 if ((ibfd->flags & DYNAMIC) == 0
4778 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4779 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4781 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4783 if ((ibfd->flags & DYNAMIC) == 0)
4784 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4786 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4788 else if (*sec != NULL
4789 && strcmp ((*sec)->name, ".opd") == 0)
4790 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4792 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4794 if (abiversion (ibfd) == 0)
4795 set_abiversion (ibfd, 2);
4796 else if (abiversion (ibfd) == 1)
4798 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4799 " for ABI version 1\n"), name);
4800 bfd_set_error (bfd_error_bad_value);
4808 /* Merge non-visibility st_other attributes: local entry point. */
4811 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4812 const Elf_Internal_Sym *isym,
4813 bfd_boolean definition,
4814 bfd_boolean dynamic)
4816 if (definition && !dynamic)
4817 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4818 | ELF_ST_VISIBILITY (h->other));
4821 /* This function makes an old ABI object reference to ".bar" cause the
4822 inclusion of a new ABI object archive that defines "bar".
4823 NAME is a symbol defined in an archive. Return a symbol in the hash
4824 table that might be satisfied by the archive symbols. */
4826 static struct elf_link_hash_entry *
4827 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4828 struct bfd_link_info *info,
4831 struct elf_link_hash_entry *h;
4835 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4837 /* Don't return this sym if it is a fake function descriptor
4838 created by add_symbol_adjust. */
4839 && !(h->root.type == bfd_link_hash_undefweak
4840 && ((struct ppc_link_hash_entry *) h)->fake))
4846 len = strlen (name);
4847 dot_name = bfd_alloc (abfd, len + 2);
4848 if (dot_name == NULL)
4849 return (struct elf_link_hash_entry *) 0 - 1;
4851 memcpy (dot_name + 1, name, len + 1);
4852 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4853 bfd_release (abfd, dot_name);
4857 /* This function satisfies all old ABI object references to ".bar" if a
4858 new ABI object defines "bar". Well, at least, undefined dot symbols
4859 are made weak. This stops later archive searches from including an
4860 object if we already have a function descriptor definition. It also
4861 prevents the linker complaining about undefined symbols.
4862 We also check and correct mismatched symbol visibility here. The
4863 most restrictive visibility of the function descriptor and the
4864 function entry symbol is used. */
4867 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4869 struct ppc_link_hash_table *htab;
4870 struct ppc_link_hash_entry *fdh;
4872 if (eh->elf.root.type == bfd_link_hash_indirect)
4875 if (eh->elf.root.type == bfd_link_hash_warning)
4876 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4878 if (eh->elf.root.root.string[0] != '.')
4881 htab = ppc_hash_table (info);
4885 fdh = lookup_fdh (eh, htab);
4888 if (!info->relocatable
4889 && (eh->elf.root.type == bfd_link_hash_undefined
4890 || eh->elf.root.type == bfd_link_hash_undefweak)
4891 && eh->elf.ref_regular)
4893 /* Make an undefweak function descriptor sym, which is enough to
4894 pull in an --as-needed shared lib, but won't cause link
4895 errors. Archives are handled elsewhere. */
4896 fdh = make_fdh (info, eh);
4899 fdh->elf.ref_regular = 1;
4904 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4905 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4906 if (entry_vis < descr_vis)
4907 fdh->elf.other += entry_vis - descr_vis;
4908 else if (entry_vis > descr_vis)
4909 eh->elf.other += descr_vis - entry_vis;
4911 if ((fdh->elf.root.type == bfd_link_hash_defined
4912 || fdh->elf.root.type == bfd_link_hash_defweak)
4913 && eh->elf.root.type == bfd_link_hash_undefined)
4915 eh->elf.root.type = bfd_link_hash_undefweak;
4916 eh->was_undefined = 1;
4917 htab->twiddled_syms = 1;
4924 /* Process list of dot-symbols we made in link_hash_newfunc. */
4927 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4929 struct ppc_link_hash_table *htab;
4930 struct ppc_link_hash_entry **p, *eh;
4932 if (!is_ppc64_elf (info->output_bfd))
4934 htab = ppc_hash_table (info);
4938 if (is_ppc64_elf (ibfd))
4940 p = &htab->dot_syms;
4941 while ((eh = *p) != NULL)
4944 if (&eh->elf == htab->elf.hgot)
4946 else if (htab->elf.hgot == NULL
4947 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
4948 htab->elf.hgot = &eh->elf;
4949 else if (!add_symbol_adjust (eh, info))
4951 p = &eh->u.next_dot_sym;
4955 /* Clear the list for non-ppc64 input files. */
4956 p = &htab->dot_syms;
4957 while ((eh = *p) != NULL)
4960 p = &eh->u.next_dot_sym;
4963 /* We need to fix the undefs list for any syms we have twiddled to
4965 if (htab->twiddled_syms)
4967 bfd_link_repair_undef_list (&htab->elf.root);
4968 htab->twiddled_syms = 0;
4973 /* Undo hash table changes when an --as-needed input file is determined
4974 not to be needed. */
4977 ppc64_elf_notice_as_needed (bfd *ibfd,
4978 struct bfd_link_info *info,
4979 enum notice_asneeded_action act)
4981 if (act == notice_not_needed)
4983 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4988 htab->dot_syms = NULL;
4990 return _bfd_elf_notice_as_needed (ibfd, info, act);
4993 /* If --just-symbols against a final linked binary, then assume we need
4994 toc adjusting stubs when calling functions defined there. */
4997 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
4999 if ((sec->flags & SEC_CODE) != 0
5000 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5001 && is_ppc64_elf (sec->owner))
5003 if (abiversion (sec->owner) >= 2
5004 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5005 sec->has_toc_reloc = 1;
5007 _bfd_elf_link_just_syms (sec, info);
5010 static struct plt_entry **
5011 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5012 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5014 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5015 struct plt_entry **local_plt;
5016 unsigned char *local_got_tls_masks;
5018 if (local_got_ents == NULL)
5020 bfd_size_type size = symtab_hdr->sh_info;
5022 size *= (sizeof (*local_got_ents)
5023 + sizeof (*local_plt)
5024 + sizeof (*local_got_tls_masks));
5025 local_got_ents = bfd_zalloc (abfd, size);
5026 if (local_got_ents == NULL)
5028 elf_local_got_ents (abfd) = local_got_ents;
5031 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5033 struct got_entry *ent;
5035 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5036 if (ent->addend == r_addend
5037 && ent->owner == abfd
5038 && ent->tls_type == tls_type)
5042 bfd_size_type amt = sizeof (*ent);
5043 ent = bfd_alloc (abfd, amt);
5046 ent->next = local_got_ents[r_symndx];
5047 ent->addend = r_addend;
5049 ent->tls_type = tls_type;
5050 ent->is_indirect = FALSE;
5051 ent->got.refcount = 0;
5052 local_got_ents[r_symndx] = ent;
5054 ent->got.refcount += 1;
5057 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5058 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5059 local_got_tls_masks[r_symndx] |= tls_type;
5061 return local_plt + r_symndx;
5065 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5067 struct plt_entry *ent;
5069 for (ent = *plist; ent != NULL; ent = ent->next)
5070 if (ent->addend == addend)
5074 bfd_size_type amt = sizeof (*ent);
5075 ent = bfd_alloc (abfd, amt);
5079 ent->addend = addend;
5080 ent->plt.refcount = 0;
5083 ent->plt.refcount += 1;
5088 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5090 return (r_type == R_PPC64_REL24
5091 || r_type == R_PPC64_REL14
5092 || r_type == R_PPC64_REL14_BRTAKEN
5093 || r_type == R_PPC64_REL14_BRNTAKEN
5094 || r_type == R_PPC64_ADDR24
5095 || r_type == R_PPC64_ADDR14
5096 || r_type == R_PPC64_ADDR14_BRTAKEN
5097 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5100 /* Look through the relocs for a section during the first phase, and
5101 calculate needed space in the global offset table, procedure
5102 linkage table, and dynamic reloc sections. */
5105 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5106 asection *sec, const Elf_Internal_Rela *relocs)
5108 struct ppc_link_hash_table *htab;
5109 Elf_Internal_Shdr *symtab_hdr;
5110 struct elf_link_hash_entry **sym_hashes;
5111 const Elf_Internal_Rela *rel;
5112 const Elf_Internal_Rela *rel_end;
5114 asection **opd_sym_map;
5115 struct elf_link_hash_entry *tga, *dottga;
5117 if (info->relocatable)
5120 /* Don't do anything special with non-loaded, non-alloced sections.
5121 In particular, any relocs in such sections should not affect GOT
5122 and PLT reference counting (ie. we don't allow them to create GOT
5123 or PLT entries), there's no possibility or desire to optimize TLS
5124 relocs, and there's not much point in propagating relocs to shared
5125 libs that the dynamic linker won't relocate. */
5126 if ((sec->flags & SEC_ALLOC) == 0)
5129 BFD_ASSERT (is_ppc64_elf (abfd));
5131 htab = ppc_hash_table (info);
5135 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5136 FALSE, FALSE, TRUE);
5137 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5138 FALSE, FALSE, TRUE);
5139 symtab_hdr = &elf_symtab_hdr (abfd);
5140 sym_hashes = elf_sym_hashes (abfd);
5143 if (strcmp (sec->name, ".opd") == 0)
5145 /* Garbage collection needs some extra help with .opd sections.
5146 We don't want to necessarily keep everything referenced by
5147 relocs in .opd, as that would keep all functions. Instead,
5148 if we reference an .opd symbol (a function descriptor), we
5149 want to keep the function code symbol's section. This is
5150 easy for global symbols, but for local syms we need to keep
5151 information about the associated function section. */
5154 if (abiversion (abfd) == 0)
5155 set_abiversion (abfd, 1);
5156 else if (abiversion (abfd) == 2)
5158 info->callbacks->einfo (_("%P: .opd not allowed in ABI version %d\n"),
5160 bfd_set_error (bfd_error_bad_value);
5163 amt = sec->size * sizeof (*opd_sym_map) / 8;
5164 opd_sym_map = bfd_zalloc (abfd, amt);
5165 if (opd_sym_map == NULL)
5167 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
5168 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
5169 ppc64_elf_section_data (sec)->sec_type = sec_opd;
5172 rel_end = relocs + sec->reloc_count;
5173 for (rel = relocs; rel < rel_end; rel++)
5175 unsigned long r_symndx;
5176 struct elf_link_hash_entry *h;
5177 enum elf_ppc64_reloc_type r_type;
5179 struct _ppc64_elf_section_data *ppc64_sec;
5180 struct plt_entry **ifunc;
5182 r_symndx = ELF64_R_SYM (rel->r_info);
5183 if (r_symndx < symtab_hdr->sh_info)
5187 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5188 h = elf_follow_link (h);
5190 /* PR15323, ref flags aren't set for references in the same
5192 h->root.non_ir_ref = 1;
5194 if (h == htab->elf.hgot)
5195 sec->has_toc_reloc = 1;
5202 if (h->type == STT_GNU_IFUNC)
5205 ifunc = &h->plt.plist;
5210 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5215 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5217 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5218 rel->r_addend, PLT_IFUNC);
5223 r_type = ELF64_R_TYPE (rel->r_info);
5224 if (is_branch_reloc (r_type))
5226 if (h != NULL && (h == tga || h == dottga))
5229 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5230 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5231 /* We have a new-style __tls_get_addr call with a marker
5235 /* Mark this section as having an old-style call. */
5236 sec->has_tls_get_addr_call = 1;
5239 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5241 && !update_plt_info (abfd, ifunc, rel->r_addend))
5249 /* These special tls relocs tie a call to __tls_get_addr with
5250 its parameter symbol. */
5253 case R_PPC64_GOT_TLSLD16:
5254 case R_PPC64_GOT_TLSLD16_LO:
5255 case R_PPC64_GOT_TLSLD16_HI:
5256 case R_PPC64_GOT_TLSLD16_HA:
5257 tls_type = TLS_TLS | TLS_LD;
5260 case R_PPC64_GOT_TLSGD16:
5261 case R_PPC64_GOT_TLSGD16_LO:
5262 case R_PPC64_GOT_TLSGD16_HI:
5263 case R_PPC64_GOT_TLSGD16_HA:
5264 tls_type = TLS_TLS | TLS_GD;
5267 case R_PPC64_GOT_TPREL16_DS:
5268 case R_PPC64_GOT_TPREL16_LO_DS:
5269 case R_PPC64_GOT_TPREL16_HI:
5270 case R_PPC64_GOT_TPREL16_HA:
5271 if (!info->executable)
5272 info->flags |= DF_STATIC_TLS;
5273 tls_type = TLS_TLS | TLS_TPREL;
5276 case R_PPC64_GOT_DTPREL16_DS:
5277 case R_PPC64_GOT_DTPREL16_LO_DS:
5278 case R_PPC64_GOT_DTPREL16_HI:
5279 case R_PPC64_GOT_DTPREL16_HA:
5280 tls_type = TLS_TLS | TLS_DTPREL;
5282 sec->has_tls_reloc = 1;
5286 case R_PPC64_GOT16_DS:
5287 case R_PPC64_GOT16_HA:
5288 case R_PPC64_GOT16_HI:
5289 case R_PPC64_GOT16_LO:
5290 case R_PPC64_GOT16_LO_DS:
5291 /* This symbol requires a global offset table entry. */
5292 sec->has_toc_reloc = 1;
5293 if (r_type == R_PPC64_GOT_TLSLD16
5294 || r_type == R_PPC64_GOT_TLSGD16
5295 || r_type == R_PPC64_GOT_TPREL16_DS
5296 || r_type == R_PPC64_GOT_DTPREL16_DS
5297 || r_type == R_PPC64_GOT16
5298 || r_type == R_PPC64_GOT16_DS)
5300 htab->do_multi_toc = 1;
5301 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5304 if (ppc64_elf_tdata (abfd)->got == NULL
5305 && !create_got_section (abfd, info))
5310 struct ppc_link_hash_entry *eh;
5311 struct got_entry *ent;
5313 eh = (struct ppc_link_hash_entry *) h;
5314 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5315 if (ent->addend == rel->r_addend
5316 && ent->owner == abfd
5317 && ent->tls_type == tls_type)
5321 bfd_size_type amt = sizeof (*ent);
5322 ent = bfd_alloc (abfd, amt);
5325 ent->next = eh->elf.got.glist;
5326 ent->addend = rel->r_addend;
5328 ent->tls_type = tls_type;
5329 ent->is_indirect = FALSE;
5330 ent->got.refcount = 0;
5331 eh->elf.got.glist = ent;
5333 ent->got.refcount += 1;
5334 eh->tls_mask |= tls_type;
5337 /* This is a global offset table entry for a local symbol. */
5338 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5339 rel->r_addend, tls_type))
5342 /* We may also need a plt entry if the symbol turns out to be
5344 if (h != NULL && !info->shared && abiversion (abfd) == 2)
5346 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5351 case R_PPC64_PLT16_HA:
5352 case R_PPC64_PLT16_HI:
5353 case R_PPC64_PLT16_LO:
5356 /* This symbol requires a procedure linkage table entry. We
5357 actually build the entry in adjust_dynamic_symbol,
5358 because this might be a case of linking PIC code without
5359 linking in any dynamic objects, in which case we don't
5360 need to generate a procedure linkage table after all. */
5363 /* It does not make sense to have a procedure linkage
5364 table entry for a local symbol. */
5365 bfd_set_error (bfd_error_bad_value);
5370 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5373 if (h->root.root.string[0] == '.'
5374 && h->root.root.string[1] != '\0')
5375 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5379 /* The following relocations don't need to propagate the
5380 relocation if linking a shared object since they are
5381 section relative. */
5382 case R_PPC64_SECTOFF:
5383 case R_PPC64_SECTOFF_LO:
5384 case R_PPC64_SECTOFF_HI:
5385 case R_PPC64_SECTOFF_HA:
5386 case R_PPC64_SECTOFF_DS:
5387 case R_PPC64_SECTOFF_LO_DS:
5388 case R_PPC64_DTPREL16:
5389 case R_PPC64_DTPREL16_LO:
5390 case R_PPC64_DTPREL16_HI:
5391 case R_PPC64_DTPREL16_HA:
5392 case R_PPC64_DTPREL16_DS:
5393 case R_PPC64_DTPREL16_LO_DS:
5394 case R_PPC64_DTPREL16_HIGH:
5395 case R_PPC64_DTPREL16_HIGHA:
5396 case R_PPC64_DTPREL16_HIGHER:
5397 case R_PPC64_DTPREL16_HIGHERA:
5398 case R_PPC64_DTPREL16_HIGHEST:
5399 case R_PPC64_DTPREL16_HIGHESTA:
5404 case R_PPC64_REL16_LO:
5405 case R_PPC64_REL16_HI:
5406 case R_PPC64_REL16_HA:
5410 case R_PPC64_TOC16_DS:
5411 htab->do_multi_toc = 1;
5412 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5413 case R_PPC64_TOC16_LO:
5414 case R_PPC64_TOC16_HI:
5415 case R_PPC64_TOC16_HA:
5416 case R_PPC64_TOC16_LO_DS:
5417 sec->has_toc_reloc = 1;
5420 /* This relocation describes the C++ object vtable hierarchy.
5421 Reconstruct it for later use during GC. */
5422 case R_PPC64_GNU_VTINHERIT:
5423 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5427 /* This relocation describes which C++ vtable entries are actually
5428 used. Record for later use during GC. */
5429 case R_PPC64_GNU_VTENTRY:
5430 BFD_ASSERT (h != NULL);
5432 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5437 case R_PPC64_REL14_BRTAKEN:
5438 case R_PPC64_REL14_BRNTAKEN:
5440 asection *dest = NULL;
5442 /* Heuristic: If jumping outside our section, chances are
5443 we are going to need a stub. */
5446 /* If the sym is weak it may be overridden later, so
5447 don't assume we know where a weak sym lives. */
5448 if (h->root.type == bfd_link_hash_defined)
5449 dest = h->root.u.def.section;
5453 Elf_Internal_Sym *isym;
5455 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5460 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5464 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5469 if (h != NULL && ifunc == NULL)
5471 /* We may need a .plt entry if the function this reloc
5472 refers to is in a shared lib. */
5473 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5476 if (h->root.root.string[0] == '.'
5477 && h->root.root.string[1] != '\0')
5478 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5479 if (h == tga || h == dottga)
5480 sec->has_tls_reloc = 1;
5484 case R_PPC64_TPREL64:
5485 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5486 if (!info->executable)
5487 info->flags |= DF_STATIC_TLS;
5490 case R_PPC64_DTPMOD64:
5491 if (rel + 1 < rel_end
5492 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5493 && rel[1].r_offset == rel->r_offset + 8)
5494 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5496 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5499 case R_PPC64_DTPREL64:
5500 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5502 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5503 && rel[-1].r_offset == rel->r_offset - 8)
5504 /* This is the second reloc of a dtpmod, dtprel pair.
5505 Don't mark with TLS_DTPREL. */
5509 sec->has_tls_reloc = 1;
5512 struct ppc_link_hash_entry *eh;
5513 eh = (struct ppc_link_hash_entry *) h;
5514 eh->tls_mask |= tls_type;
5517 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5518 rel->r_addend, tls_type))
5521 ppc64_sec = ppc64_elf_section_data (sec);
5522 if (ppc64_sec->sec_type != sec_toc)
5526 /* One extra to simplify get_tls_mask. */
5527 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5528 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5529 if (ppc64_sec->u.toc.symndx == NULL)
5531 amt = sec->size * sizeof (bfd_vma) / 8;
5532 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5533 if (ppc64_sec->u.toc.add == NULL)
5535 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5536 ppc64_sec->sec_type = sec_toc;
5538 BFD_ASSERT (rel->r_offset % 8 == 0);
5539 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5540 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5542 /* Mark the second slot of a GD or LD entry.
5543 -1 to indicate GD and -2 to indicate LD. */
5544 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5545 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5546 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5547 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5550 case R_PPC64_TPREL16:
5551 case R_PPC64_TPREL16_LO:
5552 case R_PPC64_TPREL16_HI:
5553 case R_PPC64_TPREL16_HA:
5554 case R_PPC64_TPREL16_DS:
5555 case R_PPC64_TPREL16_LO_DS:
5556 case R_PPC64_TPREL16_HIGH:
5557 case R_PPC64_TPREL16_HIGHA:
5558 case R_PPC64_TPREL16_HIGHER:
5559 case R_PPC64_TPREL16_HIGHERA:
5560 case R_PPC64_TPREL16_HIGHEST:
5561 case R_PPC64_TPREL16_HIGHESTA:
5564 if (!info->executable)
5565 info->flags |= DF_STATIC_TLS;
5570 case R_PPC64_ADDR64:
5571 if (opd_sym_map != NULL
5572 && rel + 1 < rel_end
5573 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5577 if (h->root.root.string[0] == '.'
5578 && h->root.root.string[1] != 0
5579 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5582 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5587 Elf_Internal_Sym *isym;
5589 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5594 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5595 if (s != NULL && s != sec)
5596 opd_sym_map[rel->r_offset / 8] = s;
5601 case R_PPC64_ADDR16:
5602 case R_PPC64_ADDR16_DS:
5603 case R_PPC64_ADDR16_HA:
5604 case R_PPC64_ADDR16_HI:
5605 case R_PPC64_ADDR16_HIGH:
5606 case R_PPC64_ADDR16_HIGHA:
5607 case R_PPC64_ADDR16_HIGHER:
5608 case R_PPC64_ADDR16_HIGHERA:
5609 case R_PPC64_ADDR16_HIGHEST:
5610 case R_PPC64_ADDR16_HIGHESTA:
5611 case R_PPC64_ADDR16_LO:
5612 case R_PPC64_ADDR16_LO_DS:
5613 if (h != NULL && !info->shared && abiversion (abfd) == 2
5614 && rel->r_addend == 0)
5616 /* We may need a .plt entry if this reloc refers to a
5617 function in a shared lib. */
5618 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5620 h->pointer_equality_needed = 1;
5627 case R_PPC64_ADDR14:
5628 case R_PPC64_ADDR14_BRNTAKEN:
5629 case R_PPC64_ADDR14_BRTAKEN:
5630 case R_PPC64_ADDR24:
5631 case R_PPC64_ADDR32:
5632 case R_PPC64_UADDR16:
5633 case R_PPC64_UADDR32:
5634 case R_PPC64_UADDR64:
5636 if (h != NULL && !info->shared)
5637 /* We may need a copy reloc. */
5640 /* Don't propagate .opd relocs. */
5641 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5644 /* If we are creating a shared library, and this is a reloc
5645 against a global symbol, or a non PC relative reloc
5646 against a local symbol, then we need to copy the reloc
5647 into the shared library. However, if we are linking with
5648 -Bsymbolic, we do not need to copy a reloc against a
5649 global symbol which is defined in an object we are
5650 including in the link (i.e., DEF_REGULAR is set). At
5651 this point we have not seen all the input files, so it is
5652 possible that DEF_REGULAR is not set now but will be set
5653 later (it is never cleared). In case of a weak definition,
5654 DEF_REGULAR may be cleared later by a strong definition in
5655 a shared library. We account for that possibility below by
5656 storing information in the dyn_relocs field of the hash
5657 table entry. A similar situation occurs when creating
5658 shared libraries and symbol visibility changes render the
5661 If on the other hand, we are creating an executable, we
5662 may need to keep relocations for symbols satisfied by a
5663 dynamic library if we manage to avoid copy relocs for the
5667 && (must_be_dyn_reloc (info, r_type)
5669 && (!SYMBOLIC_BIND (info, h)
5670 || h->root.type == bfd_link_hash_defweak
5671 || !h->def_regular))))
5672 || (ELIMINATE_COPY_RELOCS
5675 && (h->root.type == bfd_link_hash_defweak
5676 || !h->def_regular))
5680 /* We must copy these reloc types into the output file.
5681 Create a reloc section in dynobj and make room for
5685 sreloc = _bfd_elf_make_dynamic_reloc_section
5686 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5692 /* If this is a global symbol, we count the number of
5693 relocations we need for this symbol. */
5696 struct elf_dyn_relocs *p;
5697 struct elf_dyn_relocs **head;
5699 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5701 if (p == NULL || p->sec != sec)
5703 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5713 if (!must_be_dyn_reloc (info, r_type))
5718 /* Track dynamic relocs needed for local syms too.
5719 We really need local syms available to do this
5721 struct ppc_dyn_relocs *p;
5722 struct ppc_dyn_relocs **head;
5723 bfd_boolean is_ifunc;
5726 Elf_Internal_Sym *isym;
5728 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5733 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5737 vpp = &elf_section_data (s)->local_dynrel;
5738 head = (struct ppc_dyn_relocs **) vpp;
5739 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5741 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5743 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5745 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5751 p->ifunc = is_ifunc;
5767 /* Merge backend specific data from an object file to the output
5768 object file when linking. */
5771 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5773 unsigned long iflags, oflags;
5775 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5778 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5781 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5784 iflags = elf_elfheader (ibfd)->e_flags;
5785 oflags = elf_elfheader (obfd)->e_flags;
5787 if (!elf_flags_init (obfd) || oflags == 0)
5789 elf_flags_init (obfd) = TRUE;
5790 elf_elfheader (obfd)->e_flags = iflags;
5792 else if (iflags == oflags || iflags == 0)
5794 else if (iflags & ~EF_PPC64_ABI)
5796 (*_bfd_error_handler)
5797 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5798 bfd_set_error (bfd_error_bad_value);
5803 (*_bfd_error_handler)
5804 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5805 ibfd, iflags, oflags);
5806 bfd_set_error (bfd_error_bad_value);
5810 /* Merge Tag_compatibility attributes and any common GNU ones. */
5811 _bfd_elf_merge_object_attributes (ibfd, obfd);
5817 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5819 /* Print normal ELF private data. */
5820 _bfd_elf_print_private_bfd_data (abfd, ptr);
5822 if (elf_elfheader (abfd)->e_flags != 0)
5826 /* xgettext:c-format */
5827 fprintf (file, _("private flags = 0x%lx:"),
5828 elf_elfheader (abfd)->e_flags);
5830 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5831 fprintf (file, _(" [abiv%ld]"),
5832 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5839 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5840 of the code entry point, and its section. */
5843 opd_entry_value (asection *opd_sec,
5845 asection **code_sec,
5847 bfd_boolean in_code_sec)
5849 bfd *opd_bfd = opd_sec->owner;
5850 Elf_Internal_Rela *relocs;
5851 Elf_Internal_Rela *lo, *hi, *look;
5854 /* No relocs implies we are linking a --just-symbols object, or looking
5855 at a final linked executable with addr2line or somesuch. */
5856 if (opd_sec->reloc_count == 0)
5858 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5860 if (contents == NULL)
5862 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5863 return (bfd_vma) -1;
5864 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5867 val = bfd_get_64 (opd_bfd, contents + offset);
5868 if (code_sec != NULL)
5870 asection *sec, *likely = NULL;
5876 && val < sec->vma + sec->size)
5882 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5884 && (sec->flags & SEC_LOAD) != 0
5885 && (sec->flags & SEC_ALLOC) != 0)
5890 if (code_off != NULL)
5891 *code_off = val - likely->vma;
5897 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5899 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5901 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5903 /* Go find the opd reloc at the sym address. */
5905 BFD_ASSERT (lo != NULL);
5906 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5910 look = lo + (hi - lo) / 2;
5911 if (look->r_offset < offset)
5913 else if (look->r_offset > offset)
5917 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5919 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5920 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5922 unsigned long symndx = ELF64_R_SYM (look->r_info);
5925 if (symndx < symtab_hdr->sh_info
5926 || elf_sym_hashes (opd_bfd) == NULL)
5928 Elf_Internal_Sym *sym;
5930 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5933 size_t symcnt = symtab_hdr->sh_info;
5934 if (elf_sym_hashes (opd_bfd) == NULL)
5935 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5936 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5937 0, NULL, NULL, NULL);
5940 symtab_hdr->contents = (bfd_byte *) sym;
5944 val = sym->st_value;
5945 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5946 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5950 struct elf_link_hash_entry **sym_hashes;
5951 struct elf_link_hash_entry *rh;
5953 sym_hashes = elf_sym_hashes (opd_bfd);
5954 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5957 rh = elf_follow_link (rh);
5958 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5959 || rh->root.type == bfd_link_hash_defweak);
5960 val = rh->root.u.def.value;
5961 sec = rh->root.u.def.section;
5965 /* Handle the odd case where we can be called
5966 during bfd_elf_link_add_symbols before the
5967 symbol hashes have been fully populated. */
5968 Elf_Internal_Sym *sym;
5970 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
5971 symndx, NULL, NULL, NULL);
5975 val = sym->st_value;
5976 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5980 val += look->r_addend;
5981 if (code_off != NULL)
5983 if (code_sec != NULL)
5985 if (in_code_sec && *code_sec != sec)
5990 if (sec != NULL && sec->output_section != NULL)
5991 val += sec->output_section->vma + sec->output_offset;
6000 /* If the ELF symbol SYM might be a function in SEC, return the
6001 function size and set *CODE_OFF to the function's entry point,
6002 otherwise return zero. */
6004 static bfd_size_type
6005 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6010 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6011 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6015 if (!(sym->flags & BSF_SYNTHETIC))
6016 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6018 if (strcmp (sym->section->name, ".opd") == 0)
6020 if (opd_entry_value (sym->section, sym->value,
6021 &sec, code_off, TRUE) == (bfd_vma) -1)
6023 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6024 symbol. This size has nothing to do with the code size of the
6025 function, which is what we're supposed to return, but the
6026 code size isn't available without looking up the dot-sym.
6027 However, doing that would be a waste of time particularly
6028 since elf_find_function will look at the dot-sym anyway.
6029 Now, elf_find_function will keep the largest size of any
6030 function sym found at the code address of interest, so return
6031 1 here to avoid it incorrectly caching a larger function size
6032 for a small function. This does mean we return the wrong
6033 size for a new-ABI function of size 24, but all that does is
6034 disable caching for such functions. */
6040 if (sym->section != sec)
6042 *code_off = sym->value;
6049 /* Return true if symbol is defined in a regular object file. */
6052 is_static_defined (struct elf_link_hash_entry *h)
6054 return ((h->root.type == bfd_link_hash_defined
6055 || h->root.type == bfd_link_hash_defweak)
6056 && h->root.u.def.section != NULL
6057 && h->root.u.def.section->output_section != NULL);
6060 /* If FDH is a function descriptor symbol, return the associated code
6061 entry symbol if it is defined. Return NULL otherwise. */
6063 static struct ppc_link_hash_entry *
6064 defined_code_entry (struct ppc_link_hash_entry *fdh)
6066 if (fdh->is_func_descriptor)
6068 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6069 if (fh->elf.root.type == bfd_link_hash_defined
6070 || fh->elf.root.type == bfd_link_hash_defweak)
6076 /* If FH is a function code entry symbol, return the associated
6077 function descriptor symbol if it is defined. Return NULL otherwise. */
6079 static struct ppc_link_hash_entry *
6080 defined_func_desc (struct ppc_link_hash_entry *fh)
6083 && fh->oh->is_func_descriptor)
6085 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6086 if (fdh->elf.root.type == bfd_link_hash_defined
6087 || fdh->elf.root.type == bfd_link_hash_defweak)
6093 /* Mark all our entry sym sections, both opd and code section. */
6096 ppc64_elf_gc_keep (struct bfd_link_info *info)
6098 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6099 struct bfd_sym_chain *sym;
6104 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6106 struct ppc_link_hash_entry *eh, *fh;
6109 eh = (struct ppc_link_hash_entry *)
6110 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6113 if (eh->elf.root.type != bfd_link_hash_defined
6114 && eh->elf.root.type != bfd_link_hash_defweak)
6117 fh = defined_code_entry (eh);
6120 sec = fh->elf.root.u.def.section;
6121 sec->flags |= SEC_KEEP;
6123 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6124 && opd_entry_value (eh->elf.root.u.def.section,
6125 eh->elf.root.u.def.value,
6126 &sec, NULL, FALSE) != (bfd_vma) -1)
6127 sec->flags |= SEC_KEEP;
6129 sec = eh->elf.root.u.def.section;
6130 sec->flags |= SEC_KEEP;
6134 /* Mark sections containing dynamically referenced symbols. When
6135 building shared libraries, we must assume that any visible symbol is
6139 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6141 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6142 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6143 struct ppc_link_hash_entry *fdh;
6145 /* Dynamic linking info is on the func descriptor sym. */
6146 fdh = defined_func_desc (eh);
6150 if ((eh->elf.root.type == bfd_link_hash_defined
6151 || eh->elf.root.type == bfd_link_hash_defweak)
6152 && (eh->elf.ref_dynamic
6153 || (!info->executable
6154 && eh->elf.def_regular
6155 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6156 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6157 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6158 || !bfd_hide_sym_by_version (info->version_info,
6159 eh->elf.root.root.string)))))
6162 struct ppc_link_hash_entry *fh;
6164 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6166 /* Function descriptor syms cause the associated
6167 function code sym section to be marked. */
6168 fh = defined_code_entry (eh);
6171 code_sec = fh->elf.root.u.def.section;
6172 code_sec->flags |= SEC_KEEP;
6174 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6175 && opd_entry_value (eh->elf.root.u.def.section,
6176 eh->elf.root.u.def.value,
6177 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6178 code_sec->flags |= SEC_KEEP;
6184 /* Return the section that should be marked against GC for a given
6188 ppc64_elf_gc_mark_hook (asection *sec,
6189 struct bfd_link_info *info,
6190 Elf_Internal_Rela *rel,
6191 struct elf_link_hash_entry *h,
6192 Elf_Internal_Sym *sym)
6196 /* Syms return NULL if we're marking .opd, so we avoid marking all
6197 function sections, as all functions are referenced in .opd. */
6199 if (get_opd_info (sec) != NULL)
6204 enum elf_ppc64_reloc_type r_type;
6205 struct ppc_link_hash_entry *eh, *fh, *fdh;
6207 r_type = ELF64_R_TYPE (rel->r_info);
6210 case R_PPC64_GNU_VTINHERIT:
6211 case R_PPC64_GNU_VTENTRY:
6215 switch (h->root.type)
6217 case bfd_link_hash_defined:
6218 case bfd_link_hash_defweak:
6219 eh = (struct ppc_link_hash_entry *) h;
6220 fdh = defined_func_desc (eh);
6224 /* Function descriptor syms cause the associated
6225 function code sym section to be marked. */
6226 fh = defined_code_entry (eh);
6229 /* They also mark their opd section. */
6230 eh->elf.root.u.def.section->gc_mark = 1;
6232 rsec = fh->elf.root.u.def.section;
6234 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6235 && opd_entry_value (eh->elf.root.u.def.section,
6236 eh->elf.root.u.def.value,
6237 &rsec, NULL, FALSE) != (bfd_vma) -1)
6238 eh->elf.root.u.def.section->gc_mark = 1;
6240 rsec = h->root.u.def.section;
6243 case bfd_link_hash_common:
6244 rsec = h->root.u.c.p->section;
6248 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6254 struct _opd_sec_data *opd;
6256 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6257 opd = get_opd_info (rsec);
6258 if (opd != NULL && opd->func_sec != NULL)
6262 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
6269 /* Update the .got, .plt. and dynamic reloc reference counts for the
6270 section being removed. */
6273 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6274 asection *sec, const Elf_Internal_Rela *relocs)
6276 struct ppc_link_hash_table *htab;
6277 Elf_Internal_Shdr *symtab_hdr;
6278 struct elf_link_hash_entry **sym_hashes;
6279 struct got_entry **local_got_ents;
6280 const Elf_Internal_Rela *rel, *relend;
6282 if (info->relocatable)
6285 if ((sec->flags & SEC_ALLOC) == 0)
6288 elf_section_data (sec)->local_dynrel = NULL;
6290 htab = ppc_hash_table (info);
6294 symtab_hdr = &elf_symtab_hdr (abfd);
6295 sym_hashes = elf_sym_hashes (abfd);
6296 local_got_ents = elf_local_got_ents (abfd);
6298 relend = relocs + sec->reloc_count;
6299 for (rel = relocs; rel < relend; rel++)
6301 unsigned long r_symndx;
6302 enum elf_ppc64_reloc_type r_type;
6303 struct elf_link_hash_entry *h = NULL;
6304 unsigned char tls_type = 0;
6306 r_symndx = ELF64_R_SYM (rel->r_info);
6307 r_type = ELF64_R_TYPE (rel->r_info);
6308 if (r_symndx >= symtab_hdr->sh_info)
6310 struct ppc_link_hash_entry *eh;
6311 struct elf_dyn_relocs **pp;
6312 struct elf_dyn_relocs *p;
6314 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6315 h = elf_follow_link (h);
6316 eh = (struct ppc_link_hash_entry *) h;
6318 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6321 /* Everything must go for SEC. */
6327 if (is_branch_reloc (r_type))
6329 struct plt_entry **ifunc = NULL;
6332 if (h->type == STT_GNU_IFUNC)
6333 ifunc = &h->plt.plist;
6335 else if (local_got_ents != NULL)
6337 struct plt_entry **local_plt = (struct plt_entry **)
6338 (local_got_ents + symtab_hdr->sh_info);
6339 unsigned char *local_got_tls_masks = (unsigned char *)
6340 (local_plt + symtab_hdr->sh_info);
6341 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6342 ifunc = local_plt + r_symndx;
6346 struct plt_entry *ent;
6348 for (ent = *ifunc; ent != NULL; ent = ent->next)
6349 if (ent->addend == rel->r_addend)
6353 if (ent->plt.refcount > 0)
6354 ent->plt.refcount -= 1;
6361 case R_PPC64_GOT_TLSLD16:
6362 case R_PPC64_GOT_TLSLD16_LO:
6363 case R_PPC64_GOT_TLSLD16_HI:
6364 case R_PPC64_GOT_TLSLD16_HA:
6365 tls_type = TLS_TLS | TLS_LD;
6368 case R_PPC64_GOT_TLSGD16:
6369 case R_PPC64_GOT_TLSGD16_LO:
6370 case R_PPC64_GOT_TLSGD16_HI:
6371 case R_PPC64_GOT_TLSGD16_HA:
6372 tls_type = TLS_TLS | TLS_GD;
6375 case R_PPC64_GOT_TPREL16_DS:
6376 case R_PPC64_GOT_TPREL16_LO_DS:
6377 case R_PPC64_GOT_TPREL16_HI:
6378 case R_PPC64_GOT_TPREL16_HA:
6379 tls_type = TLS_TLS | TLS_TPREL;
6382 case R_PPC64_GOT_DTPREL16_DS:
6383 case R_PPC64_GOT_DTPREL16_LO_DS:
6384 case R_PPC64_GOT_DTPREL16_HI:
6385 case R_PPC64_GOT_DTPREL16_HA:
6386 tls_type = TLS_TLS | TLS_DTPREL;
6390 case R_PPC64_GOT16_DS:
6391 case R_PPC64_GOT16_HA:
6392 case R_PPC64_GOT16_HI:
6393 case R_PPC64_GOT16_LO:
6394 case R_PPC64_GOT16_LO_DS:
6397 struct got_entry *ent;
6402 ent = local_got_ents[r_symndx];
6404 for (; ent != NULL; ent = ent->next)
6405 if (ent->addend == rel->r_addend
6406 && ent->owner == abfd
6407 && ent->tls_type == tls_type)
6411 if (ent->got.refcount > 0)
6412 ent->got.refcount -= 1;
6416 case R_PPC64_PLT16_HA:
6417 case R_PPC64_PLT16_HI:
6418 case R_PPC64_PLT16_LO:
6422 case R_PPC64_REL14_BRNTAKEN:
6423 case R_PPC64_REL14_BRTAKEN:
6427 struct plt_entry *ent;
6429 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6430 if (ent->addend == rel->r_addend)
6432 if (ent != NULL && ent->plt.refcount > 0)
6433 ent->plt.refcount -= 1;
6444 /* The maximum size of .sfpr. */
6445 #define SFPR_MAX (218*4)
6447 struct sfpr_def_parms
6449 const char name[12];
6450 unsigned char lo, hi;
6451 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6452 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6455 /* Auto-generate _save*, _rest* functions in .sfpr. */
6458 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6460 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6462 size_t len = strlen (parm->name);
6463 bfd_boolean writing = FALSE;
6469 memcpy (sym, parm->name, len);
6472 for (i = parm->lo; i <= parm->hi; i++)
6474 struct elf_link_hash_entry *h;
6476 sym[len + 0] = i / 10 + '0';
6477 sym[len + 1] = i % 10 + '0';
6478 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6482 h->root.type = bfd_link_hash_defined;
6483 h->root.u.def.section = htab->sfpr;
6484 h->root.u.def.value = htab->sfpr->size;
6487 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6489 if (htab->sfpr->contents == NULL)
6491 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6492 if (htab->sfpr->contents == NULL)
6498 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6500 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6502 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6503 htab->sfpr->size = p - htab->sfpr->contents;
6511 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6513 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6518 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6520 p = savegpr0 (abfd, p, r);
6521 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6523 bfd_put_32 (abfd, BLR, p);
6528 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6530 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6535 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6537 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6539 p = restgpr0 (abfd, p, r);
6540 bfd_put_32 (abfd, MTLR_R0, p);
6544 p = restgpr0 (abfd, p, 30);
6545 p = restgpr0 (abfd, p, 31);
6547 bfd_put_32 (abfd, BLR, p);
6552 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6554 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6559 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6561 p = savegpr1 (abfd, p, r);
6562 bfd_put_32 (abfd, BLR, p);
6567 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6569 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6574 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6576 p = restgpr1 (abfd, p, r);
6577 bfd_put_32 (abfd, BLR, p);
6582 savefpr (bfd *abfd, bfd_byte *p, int r)
6584 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6589 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6591 p = savefpr (abfd, p, r);
6592 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6594 bfd_put_32 (abfd, BLR, p);
6599 restfpr (bfd *abfd, bfd_byte *p, int r)
6601 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6606 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6608 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6610 p = restfpr (abfd, p, r);
6611 bfd_put_32 (abfd, MTLR_R0, p);
6615 p = restfpr (abfd, p, 30);
6616 p = restfpr (abfd, p, 31);
6618 bfd_put_32 (abfd, BLR, p);
6623 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6625 p = savefpr (abfd, p, r);
6626 bfd_put_32 (abfd, BLR, p);
6631 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6633 p = restfpr (abfd, p, r);
6634 bfd_put_32 (abfd, BLR, p);
6639 savevr (bfd *abfd, bfd_byte *p, int r)
6641 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6643 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6648 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6650 p = savevr (abfd, p, r);
6651 bfd_put_32 (abfd, BLR, p);
6656 restvr (bfd *abfd, bfd_byte *p, int r)
6658 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6660 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6665 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6667 p = restvr (abfd, p, r);
6668 bfd_put_32 (abfd, BLR, p);
6672 /* Called via elf_link_hash_traverse to transfer dynamic linking
6673 information on function code symbol entries to their corresponding
6674 function descriptor symbol entries. */
6677 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6679 struct bfd_link_info *info;
6680 struct ppc_link_hash_table *htab;
6681 struct plt_entry *ent;
6682 struct ppc_link_hash_entry *fh;
6683 struct ppc_link_hash_entry *fdh;
6684 bfd_boolean force_local;
6686 fh = (struct ppc_link_hash_entry *) h;
6687 if (fh->elf.root.type == bfd_link_hash_indirect)
6691 htab = ppc_hash_table (info);
6695 /* Resolve undefined references to dot-symbols as the value
6696 in the function descriptor, if we have one in a regular object.
6697 This is to satisfy cases like ".quad .foo". Calls to functions
6698 in dynamic objects are handled elsewhere. */
6699 if (fh->elf.root.type == bfd_link_hash_undefweak
6700 && fh->was_undefined
6701 && (fdh = defined_func_desc (fh)) != NULL
6702 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6703 && opd_entry_value (fdh->elf.root.u.def.section,
6704 fdh->elf.root.u.def.value,
6705 &fh->elf.root.u.def.section,
6706 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6708 fh->elf.root.type = fdh->elf.root.type;
6709 fh->elf.forced_local = 1;
6710 fh->elf.def_regular = fdh->elf.def_regular;
6711 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6714 /* If this is a function code symbol, transfer dynamic linking
6715 information to the function descriptor symbol. */
6719 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6720 if (ent->plt.refcount > 0)
6723 || fh->elf.root.root.string[0] != '.'
6724 || fh->elf.root.root.string[1] == '\0')
6727 /* Find the corresponding function descriptor symbol. Create it
6728 as undefined if necessary. */
6730 fdh = lookup_fdh (fh, htab);
6732 && !info->executable
6733 && (fh->elf.root.type == bfd_link_hash_undefined
6734 || fh->elf.root.type == bfd_link_hash_undefweak))
6736 fdh = make_fdh (info, fh);
6741 /* Fake function descriptors are made undefweak. If the function
6742 code symbol is strong undefined, make the fake sym the same.
6743 If the function code symbol is defined, then force the fake
6744 descriptor local; We can't support overriding of symbols in a
6745 shared library on a fake descriptor. */
6749 && fdh->elf.root.type == bfd_link_hash_undefweak)
6751 if (fh->elf.root.type == bfd_link_hash_undefined)
6753 fdh->elf.root.type = bfd_link_hash_undefined;
6754 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6756 else if (fh->elf.root.type == bfd_link_hash_defined
6757 || fh->elf.root.type == bfd_link_hash_defweak)
6759 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6764 && !fdh->elf.forced_local
6765 && (!info->executable
6766 || fdh->elf.def_dynamic
6767 || fdh->elf.ref_dynamic
6768 || (fdh->elf.root.type == bfd_link_hash_undefweak
6769 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6771 if (fdh->elf.dynindx == -1)
6772 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6774 fdh->elf.ref_regular |= fh->elf.ref_regular;
6775 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6776 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6777 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6778 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6780 move_plt_plist (fh, fdh);
6781 fdh->elf.needs_plt = 1;
6783 fdh->is_func_descriptor = 1;
6788 /* Now that the info is on the function descriptor, clear the
6789 function code sym info. Any function code syms for which we
6790 don't have a definition in a regular file, we force local.
6791 This prevents a shared library from exporting syms that have
6792 been imported from another library. Function code syms that
6793 are really in the library we must leave global to prevent the
6794 linker dragging in a definition from a static library. */
6795 force_local = (!fh->elf.def_regular
6797 || !fdh->elf.def_regular
6798 || fdh->elf.forced_local);
6799 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6804 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6805 this hook to a) provide some gcc support functions, and b) transfer
6806 dynamic linking information gathered so far on function code symbol
6807 entries, to their corresponding function descriptor symbol entries. */
6810 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6811 struct bfd_link_info *info)
6813 struct ppc_link_hash_table *htab;
6815 static const struct sfpr_def_parms funcs[] =
6817 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6818 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6819 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6820 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6821 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6822 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6823 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6824 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6825 { "._savef", 14, 31, savefpr, savefpr1_tail },
6826 { "._restf", 14, 31, restfpr, restfpr1_tail },
6827 { "_savevr_", 20, 31, savevr, savevr_tail },
6828 { "_restvr_", 20, 31, restvr, restvr_tail }
6831 htab = ppc_hash_table (info);
6835 if (!info->relocatable
6836 && htab->elf.hgot != NULL)
6838 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6839 /* Make .TOC. defined so as to prevent it being made dynamic.
6840 The wrong value here is fixed later in ppc64_elf_set_toc. */
6841 htab->elf.hgot->type = STT_OBJECT;
6842 htab->elf.hgot->root.type = bfd_link_hash_defined;
6843 htab->elf.hgot->root.u.def.value = 0;
6844 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6845 htab->elf.hgot->def_regular = 1;
6846 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6850 if (htab->sfpr == NULL)
6851 /* We don't have any relocs. */
6854 /* Provide any missing _save* and _rest* functions. */
6855 htab->sfpr->size = 0;
6856 if (!info->relocatable)
6857 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6858 if (!sfpr_define (info, &funcs[i]))
6861 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6863 if (htab->sfpr->size == 0)
6864 htab->sfpr->flags |= SEC_EXCLUDE;
6869 /* Return true if we have dynamic relocs that apply to read-only sections. */
6872 readonly_dynrelocs (struct elf_link_hash_entry *h)
6874 struct ppc_link_hash_entry *eh;
6875 struct elf_dyn_relocs *p;
6877 eh = (struct ppc_link_hash_entry *) h;
6878 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6880 asection *s = p->sec->output_section;
6882 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6888 /* Adjust a symbol defined by a dynamic object and referenced by a
6889 regular object. The current definition is in some section of the
6890 dynamic object, but we're not including those sections. We have to
6891 change the definition to something the rest of the link can
6895 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6896 struct elf_link_hash_entry *h)
6898 struct ppc_link_hash_table *htab;
6901 htab = ppc_hash_table (info);
6905 /* Deal with function syms. */
6906 if (h->type == STT_FUNC
6907 || h->type == STT_GNU_IFUNC
6910 /* Clear procedure linkage table information for any symbol that
6911 won't need a .plt entry. */
6912 struct plt_entry *ent;
6913 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6914 if (ent->plt.refcount > 0)
6917 || (h->type != STT_GNU_IFUNC
6918 && (SYMBOL_CALLS_LOCAL (info, h)
6919 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6920 && h->root.type == bfd_link_hash_undefweak))))
6922 h->plt.plist = NULL;
6925 else if (abiversion (info->output_bfd) == 2)
6927 /* After adjust_dynamic_symbol, non_got_ref set in the
6928 non-shared case means that we have allocated space in
6929 .dynbss for the symbol and thus dyn_relocs for this
6930 symbol should be discarded.
6931 If we get here we know we are making a PLT entry for this
6932 symbol, and in an executable we'd normally resolve
6933 relocations against this symbol to the PLT entry. Allow
6934 dynamic relocs if the reference is weak, and the dynamic
6935 relocs will not cause text relocation. */
6936 if (!h->ref_regular_nonweak
6938 && h->type != STT_GNU_IFUNC
6939 && !readonly_dynrelocs (h))
6942 /* If making a plt entry, then we don't need copy relocs. */
6947 h->plt.plist = NULL;
6949 /* If this is a weak symbol, and there is a real definition, the
6950 processor independent code will have arranged for us to see the
6951 real definition first, and we can just use the same value. */
6952 if (h->u.weakdef != NULL)
6954 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6955 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6956 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6957 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6958 if (ELIMINATE_COPY_RELOCS)
6959 h->non_got_ref = h->u.weakdef->non_got_ref;
6963 /* If we are creating a shared library, we must presume that the
6964 only references to the symbol are via the global offset table.
6965 For such cases we need not do anything here; the relocations will
6966 be handled correctly by relocate_section. */
6970 /* If there are no references to this symbol that do not use the
6971 GOT, we don't need to generate a copy reloc. */
6972 if (!h->non_got_ref)
6975 /* Don't generate a copy reloc for symbols defined in the executable. */
6976 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6979 /* If we didn't find any dynamic relocs in read-only sections, then
6980 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6981 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
6987 if (h->plt.plist != NULL)
6989 /* We should never get here, but unfortunately there are versions
6990 of gcc out there that improperly (for this ABI) put initialized
6991 function pointers, vtable refs and suchlike in read-only
6992 sections. Allow them to proceed, but warn that this might
6993 break at runtime. */
6994 info->callbacks->einfo
6995 (_("%P: copy reloc against `%T' requires lazy plt linking; "
6996 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6997 h->root.root.string);
7000 /* This is a reference to a symbol defined by a dynamic object which
7001 is not a function. */
7003 /* We must allocate the symbol in our .dynbss section, which will
7004 become part of the .bss section of the executable. There will be
7005 an entry for this symbol in the .dynsym section. The dynamic
7006 object will contain position independent code, so all references
7007 from the dynamic object to this symbol will go through the global
7008 offset table. The dynamic linker will use the .dynsym entry to
7009 determine the address it must put in the global offset table, so
7010 both the dynamic object and the regular object will refer to the
7011 same memory location for the variable. */
7013 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7014 to copy the initial value out of the dynamic object and into the
7015 runtime process image. We need to remember the offset into the
7016 .rela.bss section we are going to use. */
7017 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7019 htab->relbss->size += sizeof (Elf64_External_Rela);
7025 return _bfd_elf_adjust_dynamic_copy (h, s);
7028 /* If given a function descriptor symbol, hide both the function code
7029 sym and the descriptor. */
7031 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7032 struct elf_link_hash_entry *h,
7033 bfd_boolean force_local)
7035 struct ppc_link_hash_entry *eh;
7036 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7038 eh = (struct ppc_link_hash_entry *) h;
7039 if (eh->is_func_descriptor)
7041 struct ppc_link_hash_entry *fh = eh->oh;
7046 struct ppc_link_hash_table *htab;
7049 /* We aren't supposed to use alloca in BFD because on
7050 systems which do not have alloca the version in libiberty
7051 calls xmalloc, which might cause the program to crash
7052 when it runs out of memory. This function doesn't have a
7053 return status, so there's no way to gracefully return an
7054 error. So cheat. We know that string[-1] can be safely
7055 accessed; It's either a string in an ELF string table,
7056 or allocated in an objalloc structure. */
7058 p = eh->elf.root.root.string - 1;
7061 htab = ppc_hash_table (info);
7065 fh = (struct ppc_link_hash_entry *)
7066 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7069 /* Unfortunately, if it so happens that the string we were
7070 looking for was allocated immediately before this string,
7071 then we overwrote the string terminator. That's the only
7072 reason the lookup should fail. */
7075 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7076 while (q >= eh->elf.root.root.string && *q == *p)
7078 if (q < eh->elf.root.root.string && *p == '.')
7079 fh = (struct ppc_link_hash_entry *)
7080 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7089 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7094 get_sym_h (struct elf_link_hash_entry **hp,
7095 Elf_Internal_Sym **symp,
7097 unsigned char **tls_maskp,
7098 Elf_Internal_Sym **locsymsp,
7099 unsigned long r_symndx,
7102 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7104 if (r_symndx >= symtab_hdr->sh_info)
7106 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7107 struct elf_link_hash_entry *h;
7109 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7110 h = elf_follow_link (h);
7118 if (symsecp != NULL)
7120 asection *symsec = NULL;
7121 if (h->root.type == bfd_link_hash_defined
7122 || h->root.type == bfd_link_hash_defweak)
7123 symsec = h->root.u.def.section;
7127 if (tls_maskp != NULL)
7129 struct ppc_link_hash_entry *eh;
7131 eh = (struct ppc_link_hash_entry *) h;
7132 *tls_maskp = &eh->tls_mask;
7137 Elf_Internal_Sym *sym;
7138 Elf_Internal_Sym *locsyms = *locsymsp;
7140 if (locsyms == NULL)
7142 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7143 if (locsyms == NULL)
7144 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7145 symtab_hdr->sh_info,
7146 0, NULL, NULL, NULL);
7147 if (locsyms == NULL)
7149 *locsymsp = locsyms;
7151 sym = locsyms + r_symndx;
7159 if (symsecp != NULL)
7160 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7162 if (tls_maskp != NULL)
7164 struct got_entry **lgot_ents;
7165 unsigned char *tls_mask;
7168 lgot_ents = elf_local_got_ents (ibfd);
7169 if (lgot_ents != NULL)
7171 struct plt_entry **local_plt = (struct plt_entry **)
7172 (lgot_ents + symtab_hdr->sh_info);
7173 unsigned char *lgot_masks = (unsigned char *)
7174 (local_plt + symtab_hdr->sh_info);
7175 tls_mask = &lgot_masks[r_symndx];
7177 *tls_maskp = tls_mask;
7183 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7184 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7185 type suitable for optimization, and 1 otherwise. */
7188 get_tls_mask (unsigned char **tls_maskp,
7189 unsigned long *toc_symndx,
7190 bfd_vma *toc_addend,
7191 Elf_Internal_Sym **locsymsp,
7192 const Elf_Internal_Rela *rel,
7195 unsigned long r_symndx;
7197 struct elf_link_hash_entry *h;
7198 Elf_Internal_Sym *sym;
7202 r_symndx = ELF64_R_SYM (rel->r_info);
7203 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7206 if ((*tls_maskp != NULL && **tls_maskp != 0)
7208 || ppc64_elf_section_data (sec) == NULL
7209 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7212 /* Look inside a TOC section too. */
7215 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7216 off = h->root.u.def.value;
7219 off = sym->st_value;
7220 off += rel->r_addend;
7221 BFD_ASSERT (off % 8 == 0);
7222 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7223 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7224 if (toc_symndx != NULL)
7225 *toc_symndx = r_symndx;
7226 if (toc_addend != NULL)
7227 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7228 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7230 if ((h == NULL || is_static_defined (h))
7231 && (next_r == -1 || next_r == -2))
7236 /* Find (or create) an entry in the tocsave hash table. */
7238 static struct tocsave_entry *
7239 tocsave_find (struct ppc_link_hash_table *htab,
7240 enum insert_option insert,
7241 Elf_Internal_Sym **local_syms,
7242 const Elf_Internal_Rela *irela,
7245 unsigned long r_indx;
7246 struct elf_link_hash_entry *h;
7247 Elf_Internal_Sym *sym;
7248 struct tocsave_entry ent, *p;
7250 struct tocsave_entry **slot;
7252 r_indx = ELF64_R_SYM (irela->r_info);
7253 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7255 if (ent.sec == NULL || ent.sec->output_section == NULL)
7257 (*_bfd_error_handler)
7258 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7263 ent.offset = h->root.u.def.value;
7265 ent.offset = sym->st_value;
7266 ent.offset += irela->r_addend;
7268 hash = tocsave_htab_hash (&ent);
7269 slot = ((struct tocsave_entry **)
7270 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7276 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7285 /* Adjust all global syms defined in opd sections. In gcc generated
7286 code for the old ABI, these will already have been done. */
7289 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7291 struct ppc_link_hash_entry *eh;
7293 struct _opd_sec_data *opd;
7295 if (h->root.type == bfd_link_hash_indirect)
7298 if (h->root.type != bfd_link_hash_defined
7299 && h->root.type != bfd_link_hash_defweak)
7302 eh = (struct ppc_link_hash_entry *) h;
7303 if (eh->adjust_done)
7306 sym_sec = eh->elf.root.u.def.section;
7307 opd = get_opd_info (sym_sec);
7308 if (opd != NULL && opd->adjust != NULL)
7310 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7313 /* This entry has been deleted. */
7314 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7317 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7318 if (discarded_section (dsec))
7320 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7324 eh->elf.root.u.def.value = 0;
7325 eh->elf.root.u.def.section = dsec;
7328 eh->elf.root.u.def.value += adjust;
7329 eh->adjust_done = 1;
7334 /* Handles decrementing dynamic reloc counts for the reloc specified by
7335 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7336 have already been determined. */
7339 dec_dynrel_count (bfd_vma r_info,
7341 struct bfd_link_info *info,
7342 Elf_Internal_Sym **local_syms,
7343 struct elf_link_hash_entry *h,
7344 Elf_Internal_Sym *sym)
7346 enum elf_ppc64_reloc_type r_type;
7347 asection *sym_sec = NULL;
7349 /* Can this reloc be dynamic? This switch, and later tests here
7350 should be kept in sync with the code in check_relocs. */
7351 r_type = ELF64_R_TYPE (r_info);
7357 case R_PPC64_TPREL16:
7358 case R_PPC64_TPREL16_LO:
7359 case R_PPC64_TPREL16_HI:
7360 case R_PPC64_TPREL16_HA:
7361 case R_PPC64_TPREL16_DS:
7362 case R_PPC64_TPREL16_LO_DS:
7363 case R_PPC64_TPREL16_HIGH:
7364 case R_PPC64_TPREL16_HIGHA:
7365 case R_PPC64_TPREL16_HIGHER:
7366 case R_PPC64_TPREL16_HIGHERA:
7367 case R_PPC64_TPREL16_HIGHEST:
7368 case R_PPC64_TPREL16_HIGHESTA:
7372 case R_PPC64_TPREL64:
7373 case R_PPC64_DTPMOD64:
7374 case R_PPC64_DTPREL64:
7375 case R_PPC64_ADDR64:
7379 case R_PPC64_ADDR14:
7380 case R_PPC64_ADDR14_BRNTAKEN:
7381 case R_PPC64_ADDR14_BRTAKEN:
7382 case R_PPC64_ADDR16:
7383 case R_PPC64_ADDR16_DS:
7384 case R_PPC64_ADDR16_HA:
7385 case R_PPC64_ADDR16_HI:
7386 case R_PPC64_ADDR16_HIGH:
7387 case R_PPC64_ADDR16_HIGHA:
7388 case R_PPC64_ADDR16_HIGHER:
7389 case R_PPC64_ADDR16_HIGHERA:
7390 case R_PPC64_ADDR16_HIGHEST:
7391 case R_PPC64_ADDR16_HIGHESTA:
7392 case R_PPC64_ADDR16_LO:
7393 case R_PPC64_ADDR16_LO_DS:
7394 case R_PPC64_ADDR24:
7395 case R_PPC64_ADDR32:
7396 case R_PPC64_UADDR16:
7397 case R_PPC64_UADDR32:
7398 case R_PPC64_UADDR64:
7403 if (local_syms != NULL)
7405 unsigned long r_symndx;
7406 bfd *ibfd = sec->owner;
7408 r_symndx = ELF64_R_SYM (r_info);
7409 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7414 && (must_be_dyn_reloc (info, r_type)
7416 && (!SYMBOLIC_BIND (info, h)
7417 || h->root.type == bfd_link_hash_defweak
7418 || !h->def_regular))))
7419 || (ELIMINATE_COPY_RELOCS
7422 && (h->root.type == bfd_link_hash_defweak
7423 || !h->def_regular)))
7430 struct elf_dyn_relocs *p;
7431 struct elf_dyn_relocs **pp;
7432 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7434 /* elf_gc_sweep may have already removed all dyn relocs associated
7435 with local syms for a given section. Also, symbol flags are
7436 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7437 report a dynreloc miscount. */
7438 if (*pp == NULL && info->gc_sections)
7441 while ((p = *pp) != NULL)
7445 if (!must_be_dyn_reloc (info, r_type))
7457 struct ppc_dyn_relocs *p;
7458 struct ppc_dyn_relocs **pp;
7460 bfd_boolean is_ifunc;
7462 if (local_syms == NULL)
7463 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7464 if (sym_sec == NULL)
7467 vpp = &elf_section_data (sym_sec)->local_dynrel;
7468 pp = (struct ppc_dyn_relocs **) vpp;
7470 if (*pp == NULL && info->gc_sections)
7473 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7474 while ((p = *pp) != NULL)
7476 if (p->sec == sec && p->ifunc == is_ifunc)
7487 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7489 bfd_set_error (bfd_error_bad_value);
7493 /* Remove unused Official Procedure Descriptor entries. Currently we
7494 only remove those associated with functions in discarded link-once
7495 sections, or weakly defined functions that have been overridden. It
7496 would be possible to remove many more entries for statically linked
7500 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7503 bfd_boolean some_edited = FALSE;
7504 asection *need_pad = NULL;
7506 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7509 Elf_Internal_Rela *relstart, *rel, *relend;
7510 Elf_Internal_Shdr *symtab_hdr;
7511 Elf_Internal_Sym *local_syms;
7513 struct _opd_sec_data *opd;
7514 bfd_boolean need_edit, add_aux_fields;
7515 bfd_size_type cnt_16b = 0;
7517 if (!is_ppc64_elf (ibfd))
7520 sec = bfd_get_section_by_name (ibfd, ".opd");
7521 if (sec == NULL || sec->size == 0)
7524 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7527 if (sec->output_section == bfd_abs_section_ptr)
7530 /* Look through the section relocs. */
7531 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7535 symtab_hdr = &elf_symtab_hdr (ibfd);
7537 /* Read the relocations. */
7538 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7540 if (relstart == NULL)
7543 /* First run through the relocs to check they are sane, and to
7544 determine whether we need to edit this opd section. */
7548 relend = relstart + sec->reloc_count;
7549 for (rel = relstart; rel < relend; )
7551 enum elf_ppc64_reloc_type r_type;
7552 unsigned long r_symndx;
7554 struct elf_link_hash_entry *h;
7555 Elf_Internal_Sym *sym;
7557 /* .opd contains a regular array of 16 or 24 byte entries. We're
7558 only interested in the reloc pointing to a function entry
7560 if (rel->r_offset != offset
7561 || rel + 1 >= relend
7562 || (rel + 1)->r_offset != offset + 8)
7564 /* If someone messes with .opd alignment then after a
7565 "ld -r" we might have padding in the middle of .opd.
7566 Also, there's nothing to prevent someone putting
7567 something silly in .opd with the assembler. No .opd
7568 optimization for them! */
7570 (*_bfd_error_handler)
7571 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7576 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7577 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7579 (*_bfd_error_handler)
7580 (_("%B: unexpected reloc type %u in .opd section"),
7586 r_symndx = ELF64_R_SYM (rel->r_info);
7587 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7591 if (sym_sec == NULL || sym_sec->owner == NULL)
7593 const char *sym_name;
7595 sym_name = h->root.root.string;
7597 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7600 (*_bfd_error_handler)
7601 (_("%B: undefined sym `%s' in .opd section"),
7607 /* opd entries are always for functions defined in the
7608 current input bfd. If the symbol isn't defined in the
7609 input bfd, then we won't be using the function in this
7610 bfd; It must be defined in a linkonce section in another
7611 bfd, or is weak. It's also possible that we are
7612 discarding the function due to a linker script /DISCARD/,
7613 which we test for via the output_section. */
7614 if (sym_sec->owner != ibfd
7615 || sym_sec->output_section == bfd_abs_section_ptr)
7620 || (rel + 1 == relend && rel->r_offset == offset + 16))
7622 if (sec->size == offset + 24)
7627 if (rel == relend && sec->size == offset + 16)
7635 if (rel->r_offset == offset + 24)
7637 else if (rel->r_offset != offset + 16)
7639 else if (rel + 1 < relend
7640 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7641 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7646 else if (rel + 2 < relend
7647 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7648 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7657 add_aux_fields = non_overlapping && cnt_16b > 0;
7659 if (need_edit || add_aux_fields)
7661 Elf_Internal_Rela *write_rel;
7662 Elf_Internal_Shdr *rel_hdr;
7663 bfd_byte *rptr, *wptr;
7664 bfd_byte *new_contents;
7669 new_contents = NULL;
7670 amt = sec->size * sizeof (long) / 8;
7671 opd = &ppc64_elf_section_data (sec)->u.opd;
7672 opd->adjust = bfd_zalloc (sec->owner, amt);
7673 if (opd->adjust == NULL)
7675 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7677 /* This seems a waste of time as input .opd sections are all
7678 zeros as generated by gcc, but I suppose there's no reason
7679 this will always be so. We might start putting something in
7680 the third word of .opd entries. */
7681 if ((sec->flags & SEC_IN_MEMORY) == 0)
7684 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7689 if (local_syms != NULL
7690 && symtab_hdr->contents != (unsigned char *) local_syms)
7692 if (elf_section_data (sec)->relocs != relstart)
7696 sec->contents = loc;
7697 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7700 elf_section_data (sec)->relocs = relstart;
7702 new_contents = sec->contents;
7705 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7706 if (new_contents == NULL)
7710 wptr = new_contents;
7711 rptr = sec->contents;
7713 write_rel = relstart;
7717 for (rel = relstart; rel < relend; rel++)
7719 unsigned long r_symndx;
7721 struct elf_link_hash_entry *h;
7722 Elf_Internal_Sym *sym;
7724 r_symndx = ELF64_R_SYM (rel->r_info);
7725 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7729 if (rel->r_offset == offset)
7731 struct ppc_link_hash_entry *fdh = NULL;
7733 /* See if the .opd entry is full 24 byte or
7734 16 byte (with fd_aux entry overlapped with next
7737 if ((rel + 2 == relend && sec->size == offset + 16)
7738 || (rel + 3 < relend
7739 && rel[2].r_offset == offset + 16
7740 && rel[3].r_offset == offset + 24
7741 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7742 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7746 && h->root.root.string[0] == '.')
7748 struct ppc_link_hash_table *htab;
7750 htab = ppc_hash_table (info);
7752 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7755 && fdh->elf.root.type != bfd_link_hash_defined
7756 && fdh->elf.root.type != bfd_link_hash_defweak)
7760 skip = (sym_sec->owner != ibfd
7761 || sym_sec->output_section == bfd_abs_section_ptr);
7764 if (fdh != NULL && sym_sec->owner == ibfd)
7766 /* Arrange for the function descriptor sym
7768 fdh->elf.root.u.def.value = 0;
7769 fdh->elf.root.u.def.section = sym_sec;
7771 opd->adjust[rel->r_offset / 8] = -1;
7775 /* We'll be keeping this opd entry. */
7779 /* Redefine the function descriptor symbol to
7780 this location in the opd section. It is
7781 necessary to update the value here rather
7782 than using an array of adjustments as we do
7783 for local symbols, because various places
7784 in the generic ELF code use the value
7785 stored in u.def.value. */
7786 fdh->elf.root.u.def.value = wptr - new_contents;
7787 fdh->adjust_done = 1;
7790 /* Local syms are a bit tricky. We could
7791 tweak them as they can be cached, but
7792 we'd need to look through the local syms
7793 for the function descriptor sym which we
7794 don't have at the moment. So keep an
7795 array of adjustments. */
7796 opd->adjust[rel->r_offset / 8]
7797 = (wptr - new_contents) - (rptr - sec->contents);
7800 memcpy (wptr, rptr, opd_ent_size);
7801 wptr += opd_ent_size;
7802 if (add_aux_fields && opd_ent_size == 16)
7804 memset (wptr, '\0', 8);
7808 rptr += opd_ent_size;
7809 offset += opd_ent_size;
7815 && !info->relocatable
7816 && !dec_dynrel_count (rel->r_info, sec, info,
7822 /* We need to adjust any reloc offsets to point to the
7823 new opd entries. While we're at it, we may as well
7824 remove redundant relocs. */
7825 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7826 if (write_rel != rel)
7827 memcpy (write_rel, rel, sizeof (*rel));
7832 sec->size = wptr - new_contents;
7833 sec->reloc_count = write_rel - relstart;
7836 free (sec->contents);
7837 sec->contents = new_contents;
7840 /* Fudge the header size too, as this is used later in
7841 elf_bfd_final_link if we are emitting relocs. */
7842 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7843 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7846 else if (elf_section_data (sec)->relocs != relstart)
7849 if (local_syms != NULL
7850 && symtab_hdr->contents != (unsigned char *) local_syms)
7852 if (!info->keep_memory)
7855 symtab_hdr->contents = (unsigned char *) local_syms;
7860 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7862 /* If we are doing a final link and the last .opd entry is just 16 byte
7863 long, add a 8 byte padding after it. */
7864 if (need_pad != NULL && !info->relocatable)
7868 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7870 BFD_ASSERT (need_pad->size > 0);
7872 p = bfd_malloc (need_pad->size + 8);
7876 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7877 p, 0, need_pad->size))
7880 need_pad->contents = p;
7881 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7885 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7889 need_pad->contents = p;
7892 memset (need_pad->contents + need_pad->size, 0, 8);
7893 need_pad->size += 8;
7899 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7902 ppc64_elf_tls_setup (struct bfd_link_info *info,
7903 int no_tls_get_addr_opt,
7906 struct ppc_link_hash_table *htab;
7908 htab = ppc_hash_table (info);
7912 if (abiversion (info->output_bfd) == 1)
7916 htab->do_multi_toc = 0;
7917 else if (!htab->do_multi_toc)
7920 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7921 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7922 FALSE, FALSE, TRUE));
7923 /* Move dynamic linking info to the function descriptor sym. */
7924 if (htab->tls_get_addr != NULL)
7925 func_desc_adjust (&htab->tls_get_addr->elf, info);
7926 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7927 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7928 FALSE, FALSE, TRUE));
7929 if (!no_tls_get_addr_opt)
7931 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7933 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7934 FALSE, FALSE, TRUE);
7936 func_desc_adjust (opt, info);
7937 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7938 FALSE, FALSE, TRUE);
7940 && (opt_fd->root.type == bfd_link_hash_defined
7941 || opt_fd->root.type == bfd_link_hash_defweak))
7943 /* If glibc supports an optimized __tls_get_addr call stub,
7944 signalled by the presence of __tls_get_addr_opt, and we'll
7945 be calling __tls_get_addr via a plt call stub, then
7946 make __tls_get_addr point to __tls_get_addr_opt. */
7947 tga_fd = &htab->tls_get_addr_fd->elf;
7948 if (htab->elf.dynamic_sections_created
7950 && (tga_fd->type == STT_FUNC
7951 || tga_fd->needs_plt)
7952 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7953 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7954 && tga_fd->root.type == bfd_link_hash_undefweak)))
7956 struct plt_entry *ent;
7958 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7959 if (ent->plt.refcount > 0)
7963 tga_fd->root.type = bfd_link_hash_indirect;
7964 tga_fd->root.u.i.link = &opt_fd->root;
7965 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7966 if (opt_fd->dynindx != -1)
7968 /* Use __tls_get_addr_opt in dynamic relocations. */
7969 opt_fd->dynindx = -1;
7970 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7971 opt_fd->dynstr_index);
7972 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7975 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7976 tga = &htab->tls_get_addr->elf;
7977 if (opt != NULL && tga != NULL)
7979 tga->root.type = bfd_link_hash_indirect;
7980 tga->root.u.i.link = &opt->root;
7981 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7982 _bfd_elf_link_hash_hide_symbol (info, opt,
7984 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7986 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7987 htab->tls_get_addr_fd->is_func_descriptor = 1;
7988 if (htab->tls_get_addr != NULL)
7990 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7991 htab->tls_get_addr->is_func = 1;
7997 no_tls_get_addr_opt = TRUE;
7999 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
8000 return _bfd_elf_tls_setup (info->output_bfd, info);
8003 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8007 branch_reloc_hash_match (const bfd *ibfd,
8008 const Elf_Internal_Rela *rel,
8009 const struct ppc_link_hash_entry *hash1,
8010 const struct ppc_link_hash_entry *hash2)
8012 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8013 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8014 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8016 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8018 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8019 struct elf_link_hash_entry *h;
8021 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8022 h = elf_follow_link (h);
8023 if (h == &hash1->elf || h == &hash2->elf)
8029 /* Run through all the TLS relocs looking for optimization
8030 opportunities. The linker has been hacked (see ppc64elf.em) to do
8031 a preliminary section layout so that we know the TLS segment
8032 offsets. We can't optimize earlier because some optimizations need
8033 to know the tp offset, and we need to optimize before allocating
8034 dynamic relocations. */
8037 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8041 struct ppc_link_hash_table *htab;
8042 unsigned char *toc_ref;
8045 if (info->relocatable || !info->executable)
8048 htab = ppc_hash_table (info);
8052 /* Make two passes over the relocs. On the first pass, mark toc
8053 entries involved with tls relocs, and check that tls relocs
8054 involved in setting up a tls_get_addr call are indeed followed by
8055 such a call. If they are not, we can't do any tls optimization.
8056 On the second pass twiddle tls_mask flags to notify
8057 relocate_section that optimization can be done, and adjust got
8058 and plt refcounts. */
8060 for (pass = 0; pass < 2; ++pass)
8061 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8063 Elf_Internal_Sym *locsyms = NULL;
8064 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8066 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8067 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8069 Elf_Internal_Rela *relstart, *rel, *relend;
8070 bfd_boolean found_tls_get_addr_arg = 0;
8072 /* Read the relocations. */
8073 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8075 if (relstart == NULL)
8078 relend = relstart + sec->reloc_count;
8079 for (rel = relstart; rel < relend; rel++)
8081 enum elf_ppc64_reloc_type r_type;
8082 unsigned long r_symndx;
8083 struct elf_link_hash_entry *h;
8084 Elf_Internal_Sym *sym;
8086 unsigned char *tls_mask;
8087 unsigned char tls_set, tls_clear, tls_type = 0;
8089 bfd_boolean ok_tprel, is_local;
8090 long toc_ref_index = 0;
8091 int expecting_tls_get_addr = 0;
8092 bfd_boolean ret = FALSE;
8094 r_symndx = ELF64_R_SYM (rel->r_info);
8095 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8099 if (elf_section_data (sec)->relocs != relstart)
8101 if (toc_ref != NULL)
8104 && (elf_symtab_hdr (ibfd).contents
8105 != (unsigned char *) locsyms))
8112 if (h->root.type == bfd_link_hash_defined
8113 || h->root.type == bfd_link_hash_defweak)
8114 value = h->root.u.def.value;
8115 else if (h->root.type == bfd_link_hash_undefweak)
8119 found_tls_get_addr_arg = 0;
8124 /* Symbols referenced by TLS relocs must be of type
8125 STT_TLS. So no need for .opd local sym adjust. */
8126 value = sym->st_value;
8135 && h->root.type == bfd_link_hash_undefweak)
8139 value += sym_sec->output_offset;
8140 value += sym_sec->output_section->vma;
8141 value -= htab->elf.tls_sec->vma;
8142 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8143 < (bfd_vma) 1 << 32);
8147 r_type = ELF64_R_TYPE (rel->r_info);
8148 /* If this section has old-style __tls_get_addr calls
8149 without marker relocs, then check that each
8150 __tls_get_addr call reloc is preceded by a reloc
8151 that conceivably belongs to the __tls_get_addr arg
8152 setup insn. If we don't find matching arg setup
8153 relocs, don't do any tls optimization. */
8155 && sec->has_tls_get_addr_call
8157 && (h == &htab->tls_get_addr->elf
8158 || h == &htab->tls_get_addr_fd->elf)
8159 && !found_tls_get_addr_arg
8160 && is_branch_reloc (r_type))
8162 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8163 "TLS optimization disabled\n"),
8164 ibfd, sec, rel->r_offset);
8169 found_tls_get_addr_arg = 0;
8172 case R_PPC64_GOT_TLSLD16:
8173 case R_PPC64_GOT_TLSLD16_LO:
8174 expecting_tls_get_addr = 1;
8175 found_tls_get_addr_arg = 1;
8178 case R_PPC64_GOT_TLSLD16_HI:
8179 case R_PPC64_GOT_TLSLD16_HA:
8180 /* These relocs should never be against a symbol
8181 defined in a shared lib. Leave them alone if
8182 that turns out to be the case. */
8189 tls_type = TLS_TLS | TLS_LD;
8192 case R_PPC64_GOT_TLSGD16:
8193 case R_PPC64_GOT_TLSGD16_LO:
8194 expecting_tls_get_addr = 1;
8195 found_tls_get_addr_arg = 1;
8198 case R_PPC64_GOT_TLSGD16_HI:
8199 case R_PPC64_GOT_TLSGD16_HA:
8205 tls_set = TLS_TLS | TLS_TPRELGD;
8207 tls_type = TLS_TLS | TLS_GD;
8210 case R_PPC64_GOT_TPREL16_DS:
8211 case R_PPC64_GOT_TPREL16_LO_DS:
8212 case R_PPC64_GOT_TPREL16_HI:
8213 case R_PPC64_GOT_TPREL16_HA:
8218 tls_clear = TLS_TPREL;
8219 tls_type = TLS_TLS | TLS_TPREL;
8226 found_tls_get_addr_arg = 1;
8231 case R_PPC64_TOC16_LO:
8232 if (sym_sec == NULL || sym_sec != toc)
8235 /* Mark this toc entry as referenced by a TLS
8236 code sequence. We can do that now in the
8237 case of R_PPC64_TLS, and after checking for
8238 tls_get_addr for the TOC16 relocs. */
8239 if (toc_ref == NULL)
8240 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8241 if (toc_ref == NULL)
8245 value = h->root.u.def.value;
8247 value = sym->st_value;
8248 value += rel->r_addend;
8249 BFD_ASSERT (value < toc->size && value % 8 == 0);
8250 toc_ref_index = (value + toc->output_offset) / 8;
8251 if (r_type == R_PPC64_TLS
8252 || r_type == R_PPC64_TLSGD
8253 || r_type == R_PPC64_TLSLD)
8255 toc_ref[toc_ref_index] = 1;
8259 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8264 expecting_tls_get_addr = 2;
8267 case R_PPC64_TPREL64:
8271 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8276 tls_set = TLS_EXPLICIT;
8277 tls_clear = TLS_TPREL;
8282 case R_PPC64_DTPMOD64:
8286 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8288 if (rel + 1 < relend
8290 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8291 && rel[1].r_offset == rel->r_offset + 8)
8295 tls_set = TLS_EXPLICIT | TLS_GD;
8298 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8307 tls_set = TLS_EXPLICIT;
8318 if (!expecting_tls_get_addr
8319 || !sec->has_tls_get_addr_call)
8322 if (rel + 1 < relend
8323 && branch_reloc_hash_match (ibfd, rel + 1,
8325 htab->tls_get_addr_fd))
8327 if (expecting_tls_get_addr == 2)
8329 /* Check for toc tls entries. */
8330 unsigned char *toc_tls;
8333 retval = get_tls_mask (&toc_tls, NULL, NULL,
8338 if (toc_tls != NULL)
8340 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8341 found_tls_get_addr_arg = 1;
8343 toc_ref[toc_ref_index] = 1;
8349 if (expecting_tls_get_addr != 1)
8352 /* Uh oh, we didn't find the expected call. We
8353 could just mark this symbol to exclude it
8354 from tls optimization but it's safer to skip
8355 the entire optimization. */
8356 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8357 "TLS optimization disabled\n"),
8358 ibfd, sec, rel->r_offset);
8363 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8365 struct plt_entry *ent;
8366 for (ent = htab->tls_get_addr->elf.plt.plist;
8369 if (ent->addend == 0)
8371 if (ent->plt.refcount > 0)
8373 ent->plt.refcount -= 1;
8374 expecting_tls_get_addr = 0;
8380 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8382 struct plt_entry *ent;
8383 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8386 if (ent->addend == 0)
8388 if (ent->plt.refcount > 0)
8389 ent->plt.refcount -= 1;
8397 if ((tls_set & TLS_EXPLICIT) == 0)
8399 struct got_entry *ent;
8401 /* Adjust got entry for this reloc. */
8405 ent = elf_local_got_ents (ibfd)[r_symndx];
8407 for (; ent != NULL; ent = ent->next)
8408 if (ent->addend == rel->r_addend
8409 && ent->owner == ibfd
8410 && ent->tls_type == tls_type)
8417 /* We managed to get rid of a got entry. */
8418 if (ent->got.refcount > 0)
8419 ent->got.refcount -= 1;
8424 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8425 we'll lose one or two dyn relocs. */
8426 if (!dec_dynrel_count (rel->r_info, sec, info,
8430 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8432 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8438 *tls_mask |= tls_set;
8439 *tls_mask &= ~tls_clear;
8442 if (elf_section_data (sec)->relocs != relstart)
8447 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8449 if (!info->keep_memory)
8452 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8456 if (toc_ref != NULL)
8461 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8462 the values of any global symbols in a toc section that has been
8463 edited. Globals in toc sections should be a rarity, so this function
8464 sets a flag if any are found in toc sections other than the one just
8465 edited, so that futher hash table traversals can be avoided. */
8467 struct adjust_toc_info
8470 unsigned long *skip;
8471 bfd_boolean global_toc_syms;
8474 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8477 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8479 struct ppc_link_hash_entry *eh;
8480 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8483 if (h->root.type != bfd_link_hash_defined
8484 && h->root.type != bfd_link_hash_defweak)
8487 eh = (struct ppc_link_hash_entry *) h;
8488 if (eh->adjust_done)
8491 if (eh->elf.root.u.def.section == toc_inf->toc)
8493 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8494 i = toc_inf->toc->rawsize >> 3;
8496 i = eh->elf.root.u.def.value >> 3;
8498 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8500 (*_bfd_error_handler)
8501 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8504 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8505 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8508 eh->elf.root.u.def.value -= toc_inf->skip[i];
8509 eh->adjust_done = 1;
8511 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8512 toc_inf->global_toc_syms = TRUE;
8517 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8520 ok_lo_toc_insn (unsigned int insn)
8522 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8523 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8524 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8525 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8526 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8527 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8528 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8529 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8530 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8531 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8532 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8533 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8534 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8535 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8536 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8538 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8539 && ((insn & 3) == 0 || (insn & 3) == 3))
8540 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8543 /* Examine all relocs referencing .toc sections in order to remove
8544 unused .toc entries. */
8547 ppc64_elf_edit_toc (struct bfd_link_info *info)
8550 struct adjust_toc_info toc_inf;
8551 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8553 htab->do_toc_opt = 1;
8554 toc_inf.global_toc_syms = TRUE;
8555 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8557 asection *toc, *sec;
8558 Elf_Internal_Shdr *symtab_hdr;
8559 Elf_Internal_Sym *local_syms;
8560 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8561 unsigned long *skip, *drop;
8562 unsigned char *used;
8563 unsigned char *keep, last, some_unused;
8565 if (!is_ppc64_elf (ibfd))
8568 toc = bfd_get_section_by_name (ibfd, ".toc");
8571 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8572 || discarded_section (toc))
8577 symtab_hdr = &elf_symtab_hdr (ibfd);
8579 /* Look at sections dropped from the final link. */
8582 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8584 if (sec->reloc_count == 0
8585 || !discarded_section (sec)
8586 || get_opd_info (sec)
8587 || (sec->flags & SEC_ALLOC) == 0
8588 || (sec->flags & SEC_DEBUGGING) != 0)
8591 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8592 if (relstart == NULL)
8595 /* Run through the relocs to see which toc entries might be
8597 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8599 enum elf_ppc64_reloc_type r_type;
8600 unsigned long r_symndx;
8602 struct elf_link_hash_entry *h;
8603 Elf_Internal_Sym *sym;
8606 r_type = ELF64_R_TYPE (rel->r_info);
8613 case R_PPC64_TOC16_LO:
8614 case R_PPC64_TOC16_HI:
8615 case R_PPC64_TOC16_HA:
8616 case R_PPC64_TOC16_DS:
8617 case R_PPC64_TOC16_LO_DS:
8621 r_symndx = ELF64_R_SYM (rel->r_info);
8622 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8630 val = h->root.u.def.value;
8632 val = sym->st_value;
8633 val += rel->r_addend;
8635 if (val >= toc->size)
8638 /* Anything in the toc ought to be aligned to 8 bytes.
8639 If not, don't mark as unused. */
8645 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8650 skip[val >> 3] = ref_from_discarded;
8653 if (elf_section_data (sec)->relocs != relstart)
8657 /* For largetoc loads of address constants, we can convert
8658 . addis rx,2,addr@got@ha
8659 . ld ry,addr@got@l(rx)
8661 . addis rx,2,addr@toc@ha
8662 . addi ry,rx,addr@toc@l
8663 when addr is within 2G of the toc pointer. This then means
8664 that the word storing "addr" in the toc is no longer needed. */
8666 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8667 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8668 && toc->reloc_count != 0)
8670 /* Read toc relocs. */
8671 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8673 if (toc_relocs == NULL)
8676 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8678 enum elf_ppc64_reloc_type r_type;
8679 unsigned long r_symndx;
8681 struct elf_link_hash_entry *h;
8682 Elf_Internal_Sym *sym;
8685 r_type = ELF64_R_TYPE (rel->r_info);
8686 if (r_type != R_PPC64_ADDR64)
8689 r_symndx = ELF64_R_SYM (rel->r_info);
8690 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8695 || discarded_section (sym_sec))
8698 if (!SYMBOL_REFERENCES_LOCAL (info, h))
8703 if (h->type == STT_GNU_IFUNC)
8705 val = h->root.u.def.value;
8709 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8711 val = sym->st_value;
8713 val += rel->r_addend;
8714 val += sym_sec->output_section->vma + sym_sec->output_offset;
8716 /* We don't yet know the exact toc pointer value, but we
8717 know it will be somewhere in the toc section. Don't
8718 optimize if the difference from any possible toc
8719 pointer is outside [ff..f80008000, 7fff7fff]. */
8720 addr = toc->output_section->vma + TOC_BASE_OFF;
8721 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8724 addr = toc->output_section->vma + toc->output_section->rawsize;
8725 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8730 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8735 skip[rel->r_offset >> 3]
8736 |= can_optimize | ((rel - toc_relocs) << 2);
8743 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8747 if (local_syms != NULL
8748 && symtab_hdr->contents != (unsigned char *) local_syms)
8752 && elf_section_data (sec)->relocs != relstart)
8754 if (toc_relocs != NULL
8755 && elf_section_data (toc)->relocs != toc_relocs)
8762 /* Now check all kept sections that might reference the toc.
8763 Check the toc itself last. */
8764 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8767 sec = (sec == toc ? NULL
8768 : sec->next == NULL ? toc
8769 : sec->next == toc && toc->next ? toc->next
8774 if (sec->reloc_count == 0
8775 || discarded_section (sec)
8776 || get_opd_info (sec)
8777 || (sec->flags & SEC_ALLOC) == 0
8778 || (sec->flags & SEC_DEBUGGING) != 0)
8781 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8783 if (relstart == NULL)
8786 /* Mark toc entries referenced as used. */
8790 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8792 enum elf_ppc64_reloc_type r_type;
8793 unsigned long r_symndx;
8795 struct elf_link_hash_entry *h;
8796 Elf_Internal_Sym *sym;
8798 enum {no_check, check_lo, check_ha} insn_check;
8800 r_type = ELF64_R_TYPE (rel->r_info);
8804 insn_check = no_check;
8807 case R_PPC64_GOT_TLSLD16_HA:
8808 case R_PPC64_GOT_TLSGD16_HA:
8809 case R_PPC64_GOT_TPREL16_HA:
8810 case R_PPC64_GOT_DTPREL16_HA:
8811 case R_PPC64_GOT16_HA:
8812 case R_PPC64_TOC16_HA:
8813 insn_check = check_ha;
8816 case R_PPC64_GOT_TLSLD16_LO:
8817 case R_PPC64_GOT_TLSGD16_LO:
8818 case R_PPC64_GOT_TPREL16_LO_DS:
8819 case R_PPC64_GOT_DTPREL16_LO_DS:
8820 case R_PPC64_GOT16_LO:
8821 case R_PPC64_GOT16_LO_DS:
8822 case R_PPC64_TOC16_LO:
8823 case R_PPC64_TOC16_LO_DS:
8824 insn_check = check_lo;
8828 if (insn_check != no_check)
8830 bfd_vma off = rel->r_offset & ~3;
8831 unsigned char buf[4];
8834 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8839 insn = bfd_get_32 (ibfd, buf);
8840 if (insn_check == check_lo
8841 ? !ok_lo_toc_insn (insn)
8842 : ((insn & ((0x3f << 26) | 0x1f << 16))
8843 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8847 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8848 sprintf (str, "%#08x", insn);
8849 info->callbacks->einfo
8850 (_("%P: %H: toc optimization is not supported for"
8851 " %s instruction.\n"),
8852 ibfd, sec, rel->r_offset & ~3, str);
8859 case R_PPC64_TOC16_LO:
8860 case R_PPC64_TOC16_HI:
8861 case R_PPC64_TOC16_HA:
8862 case R_PPC64_TOC16_DS:
8863 case R_PPC64_TOC16_LO_DS:
8864 /* In case we're taking addresses of toc entries. */
8865 case R_PPC64_ADDR64:
8872 r_symndx = ELF64_R_SYM (rel->r_info);
8873 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8884 val = h->root.u.def.value;
8886 val = sym->st_value;
8887 val += rel->r_addend;
8889 if (val >= toc->size)
8892 if ((skip[val >> 3] & can_optimize) != 0)
8899 case R_PPC64_TOC16_HA:
8902 case R_PPC64_TOC16_LO_DS:
8903 off = rel->r_offset;
8904 off += (bfd_big_endian (ibfd) ? -2 : 3);
8905 if (!bfd_get_section_contents (ibfd, sec, &opc,
8911 if ((opc & (0x3f << 2)) == (58u << 2))
8916 /* Wrong sort of reloc, or not a ld. We may
8917 as well clear ref_from_discarded too. */
8924 /* For the toc section, we only mark as used if this
8925 entry itself isn't unused. */
8926 else if ((used[rel->r_offset >> 3]
8927 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
8930 /* Do all the relocs again, to catch reference
8939 if (elf_section_data (sec)->relocs != relstart)
8943 /* Merge the used and skip arrays. Assume that TOC
8944 doublewords not appearing as either used or unused belong
8945 to to an entry more than one doubleword in size. */
8946 for (drop = skip, keep = used, last = 0, some_unused = 0;
8947 drop < skip + (toc->size + 7) / 8;
8952 *drop &= ~ref_from_discarded;
8953 if ((*drop & can_optimize) != 0)
8957 else if ((*drop & ref_from_discarded) != 0)
8960 last = ref_from_discarded;
8970 bfd_byte *contents, *src;
8972 Elf_Internal_Sym *sym;
8973 bfd_boolean local_toc_syms = FALSE;
8975 /* Shuffle the toc contents, and at the same time convert the
8976 skip array from booleans into offsets. */
8977 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8980 elf_section_data (toc)->this_hdr.contents = contents;
8982 for (src = contents, off = 0, drop = skip;
8983 src < contents + toc->size;
8986 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8991 memcpy (src - off, src, 8);
8995 toc->rawsize = toc->size;
8996 toc->size = src - contents - off;
8998 /* Adjust addends for relocs against the toc section sym,
8999 and optimize any accesses we can. */
9000 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9002 if (sec->reloc_count == 0
9003 || discarded_section (sec))
9006 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9008 if (relstart == NULL)
9011 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9013 enum elf_ppc64_reloc_type r_type;
9014 unsigned long r_symndx;
9016 struct elf_link_hash_entry *h;
9019 r_type = ELF64_R_TYPE (rel->r_info);
9026 case R_PPC64_TOC16_LO:
9027 case R_PPC64_TOC16_HI:
9028 case R_PPC64_TOC16_HA:
9029 case R_PPC64_TOC16_DS:
9030 case R_PPC64_TOC16_LO_DS:
9031 case R_PPC64_ADDR64:
9035 r_symndx = ELF64_R_SYM (rel->r_info);
9036 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9044 val = h->root.u.def.value;
9047 val = sym->st_value;
9049 local_toc_syms = TRUE;
9052 val += rel->r_addend;
9054 if (val > toc->rawsize)
9056 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9058 else if ((skip[val >> 3] & can_optimize) != 0)
9060 Elf_Internal_Rela *tocrel
9061 = toc_relocs + (skip[val >> 3] >> 2);
9062 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9066 case R_PPC64_TOC16_HA:
9067 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9070 case R_PPC64_TOC16_LO_DS:
9071 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9075 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9077 info->callbacks->einfo
9078 (_("%P: %H: %s references "
9079 "optimized away TOC entry\n"),
9080 ibfd, sec, rel->r_offset,
9081 ppc64_elf_howto_table[r_type]->name);
9082 bfd_set_error (bfd_error_bad_value);
9085 rel->r_addend = tocrel->r_addend;
9086 elf_section_data (sec)->relocs = relstart;
9090 if (h != NULL || sym->st_value != 0)
9093 rel->r_addend -= skip[val >> 3];
9094 elf_section_data (sec)->relocs = relstart;
9097 if (elf_section_data (sec)->relocs != relstart)
9101 /* We shouldn't have local or global symbols defined in the TOC,
9102 but handle them anyway. */
9103 if (local_syms != NULL)
9104 for (sym = local_syms;
9105 sym < local_syms + symtab_hdr->sh_info;
9107 if (sym->st_value != 0
9108 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9112 if (sym->st_value > toc->rawsize)
9113 i = toc->rawsize >> 3;
9115 i = sym->st_value >> 3;
9117 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9120 (*_bfd_error_handler)
9121 (_("%s defined on removed toc entry"),
9122 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9125 while ((skip[i] & (ref_from_discarded | can_optimize)));
9126 sym->st_value = (bfd_vma) i << 3;
9129 sym->st_value -= skip[i];
9130 symtab_hdr->contents = (unsigned char *) local_syms;
9133 /* Adjust any global syms defined in this toc input section. */
9134 if (toc_inf.global_toc_syms)
9137 toc_inf.skip = skip;
9138 toc_inf.global_toc_syms = FALSE;
9139 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9143 if (toc->reloc_count != 0)
9145 Elf_Internal_Shdr *rel_hdr;
9146 Elf_Internal_Rela *wrel;
9149 /* Remove unused toc relocs, and adjust those we keep. */
9150 if (toc_relocs == NULL)
9151 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9153 if (toc_relocs == NULL)
9157 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9158 if ((skip[rel->r_offset >> 3]
9159 & (ref_from_discarded | can_optimize)) == 0)
9161 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9162 wrel->r_info = rel->r_info;
9163 wrel->r_addend = rel->r_addend;
9166 else if (!dec_dynrel_count (rel->r_info, toc, info,
9167 &local_syms, NULL, NULL))
9170 elf_section_data (toc)->relocs = toc_relocs;
9171 toc->reloc_count = wrel - toc_relocs;
9172 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9173 sz = rel_hdr->sh_entsize;
9174 rel_hdr->sh_size = toc->reloc_count * sz;
9177 else if (toc_relocs != NULL
9178 && elf_section_data (toc)->relocs != toc_relocs)
9181 if (local_syms != NULL
9182 && symtab_hdr->contents != (unsigned char *) local_syms)
9184 if (!info->keep_memory)
9187 symtab_hdr->contents = (unsigned char *) local_syms;
9195 /* Return true iff input section I references the TOC using
9196 instructions limited to +/-32k offsets. */
9199 ppc64_elf_has_small_toc_reloc (asection *i)
9201 return (is_ppc64_elf (i->owner)
9202 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9205 /* Allocate space for one GOT entry. */
9208 allocate_got (struct elf_link_hash_entry *h,
9209 struct bfd_link_info *info,
9210 struct got_entry *gent)
9212 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9214 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9215 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9217 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9218 ? 2 : 1) * sizeof (Elf64_External_Rela);
9219 asection *got = ppc64_elf_tdata (gent->owner)->got;
9221 gent->got.offset = got->size;
9222 got->size += entsize;
9224 dyn = htab->elf.dynamic_sections_created;
9225 if (h->type == STT_GNU_IFUNC)
9227 htab->elf.irelplt->size += rentsize;
9228 htab->got_reli_size += rentsize;
9230 else if ((info->shared
9231 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9232 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9233 || h->root.type != bfd_link_hash_undefweak))
9235 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9236 relgot->size += rentsize;
9240 /* This function merges got entries in the same toc group. */
9243 merge_got_entries (struct got_entry **pent)
9245 struct got_entry *ent, *ent2;
9247 for (ent = *pent; ent != NULL; ent = ent->next)
9248 if (!ent->is_indirect)
9249 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9250 if (!ent2->is_indirect
9251 && ent2->addend == ent->addend
9252 && ent2->tls_type == ent->tls_type
9253 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9255 ent2->is_indirect = TRUE;
9256 ent2->got.ent = ent;
9260 /* Allocate space in .plt, .got and associated reloc sections for
9264 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9266 struct bfd_link_info *info;
9267 struct ppc_link_hash_table *htab;
9269 struct ppc_link_hash_entry *eh;
9270 struct elf_dyn_relocs *p;
9271 struct got_entry **pgent, *gent;
9273 if (h->root.type == bfd_link_hash_indirect)
9276 info = (struct bfd_link_info *) inf;
9277 htab = ppc_hash_table (info);
9281 if ((htab->elf.dynamic_sections_created
9283 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9284 || h->type == STT_GNU_IFUNC)
9286 struct plt_entry *pent;
9287 bfd_boolean doneone = FALSE;
9288 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9289 if (pent->plt.refcount > 0)
9291 if (!htab->elf.dynamic_sections_created
9292 || h->dynindx == -1)
9295 pent->plt.offset = s->size;
9296 s->size += PLT_ENTRY_SIZE (htab);
9297 s = htab->elf.irelplt;
9301 /* If this is the first .plt entry, make room for the special
9305 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9307 pent->plt.offset = s->size;
9309 /* Make room for this entry. */
9310 s->size += PLT_ENTRY_SIZE (htab);
9312 /* Make room for the .glink code. */
9315 s->size += GLINK_CALL_STUB_SIZE;
9318 /* We need bigger stubs past index 32767. */
9319 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9326 /* We also need to make an entry in the .rela.plt section. */
9327 s = htab->elf.srelplt;
9329 s->size += sizeof (Elf64_External_Rela);
9333 pent->plt.offset = (bfd_vma) -1;
9336 h->plt.plist = NULL;
9342 h->plt.plist = NULL;
9346 eh = (struct ppc_link_hash_entry *) h;
9347 /* Run through the TLS GD got entries first if we're changing them
9349 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9350 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9351 if (gent->got.refcount > 0
9352 && (gent->tls_type & TLS_GD) != 0)
9354 /* This was a GD entry that has been converted to TPREL. If
9355 there happens to be a TPREL entry we can use that one. */
9356 struct got_entry *ent;
9357 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9358 if (ent->got.refcount > 0
9359 && (ent->tls_type & TLS_TPREL) != 0
9360 && ent->addend == gent->addend
9361 && ent->owner == gent->owner)
9363 gent->got.refcount = 0;
9367 /* If not, then we'll be using our own TPREL entry. */
9368 if (gent->got.refcount != 0)
9369 gent->tls_type = TLS_TLS | TLS_TPREL;
9372 /* Remove any list entry that won't generate a word in the GOT before
9373 we call merge_got_entries. Otherwise we risk merging to empty
9375 pgent = &h->got.glist;
9376 while ((gent = *pgent) != NULL)
9377 if (gent->got.refcount > 0)
9379 if ((gent->tls_type & TLS_LD) != 0
9382 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9383 *pgent = gent->next;
9386 pgent = &gent->next;
9389 *pgent = gent->next;
9391 if (!htab->do_multi_toc)
9392 merge_got_entries (&h->got.glist);
9394 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9395 if (!gent->is_indirect)
9397 /* Make sure this symbol is output as a dynamic symbol.
9398 Undefined weak syms won't yet be marked as dynamic,
9399 nor will all TLS symbols. */
9400 if (h->dynindx == -1
9402 && h->type != STT_GNU_IFUNC
9403 && htab->elf.dynamic_sections_created)
9405 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9409 if (!is_ppc64_elf (gent->owner))
9412 allocate_got (h, info, gent);
9415 if (eh->dyn_relocs == NULL
9416 || (!htab->elf.dynamic_sections_created
9417 && h->type != STT_GNU_IFUNC))
9420 /* In the shared -Bsymbolic case, discard space allocated for
9421 dynamic pc-relative relocs against symbols which turn out to be
9422 defined in regular objects. For the normal shared case, discard
9423 space for relocs that have become local due to symbol visibility
9428 /* Relocs that use pc_count are those that appear on a call insn,
9429 or certain REL relocs (see must_be_dyn_reloc) that can be
9430 generated via assembly. We want calls to protected symbols to
9431 resolve directly to the function rather than going via the plt.
9432 If people want function pointer comparisons to work as expected
9433 then they should avoid writing weird assembly. */
9434 if (SYMBOL_CALLS_LOCAL (info, h))
9436 struct elf_dyn_relocs **pp;
9438 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9440 p->count -= p->pc_count;
9449 /* Also discard relocs on undefined weak syms with non-default
9451 if (eh->dyn_relocs != NULL
9452 && h->root.type == bfd_link_hash_undefweak)
9454 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9455 eh->dyn_relocs = NULL;
9457 /* Make sure this symbol is output as a dynamic symbol.
9458 Undefined weak syms won't yet be marked as dynamic. */
9459 else if (h->dynindx == -1
9460 && !h->forced_local)
9462 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9467 else if (h->type == STT_GNU_IFUNC)
9469 if (!h->non_got_ref)
9470 eh->dyn_relocs = NULL;
9472 else if (ELIMINATE_COPY_RELOCS)
9474 /* For the non-shared case, discard space for relocs against
9475 symbols which turn out to need copy relocs or are not
9481 /* Make sure this symbol is output as a dynamic symbol.
9482 Undefined weak syms won't yet be marked as dynamic. */
9483 if (h->dynindx == -1
9484 && !h->forced_local)
9486 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9490 /* If that succeeded, we know we'll be keeping all the
9492 if (h->dynindx != -1)
9496 eh->dyn_relocs = NULL;
9501 /* Finally, allocate space. */
9502 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9504 asection *sreloc = elf_section_data (p->sec)->sreloc;
9505 if (eh->elf.type == STT_GNU_IFUNC)
9506 sreloc = htab->elf.irelplt;
9507 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9513 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9514 to set up space for global entry stubs. These are put in glink,
9515 after the branch table. */
9518 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9520 struct bfd_link_info *info;
9521 struct ppc_link_hash_table *htab;
9522 struct plt_entry *pent;
9525 if (h->root.type == bfd_link_hash_indirect)
9528 if (!h->pointer_equality_needed)
9535 htab = ppc_hash_table (info);
9540 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9541 if (pent->plt.offset != (bfd_vma) -1
9542 && pent->addend == 0)
9544 /* For ELFv2, if this symbol is not defined in a regular file
9545 and we are not generating a shared library or pie, then we
9546 need to define the symbol in the executable on a call stub.
9547 This is to avoid text relocations. */
9548 s->size = (s->size + 15) & -16;
9549 h->root.u.def.section = s;
9550 h->root.u.def.value = s->size;
9557 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9558 read-only sections. */
9561 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9563 if (h->root.type == bfd_link_hash_indirect)
9566 if (readonly_dynrelocs (h))
9568 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9570 /* Not an error, just cut short the traversal. */
9576 /* Set the sizes of the dynamic sections. */
9579 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9580 struct bfd_link_info *info)
9582 struct ppc_link_hash_table *htab;
9587 struct got_entry *first_tlsld;
9589 htab = ppc_hash_table (info);
9593 dynobj = htab->elf.dynobj;
9597 if (htab->elf.dynamic_sections_created)
9599 /* Set the contents of the .interp section to the interpreter. */
9600 if (info->executable)
9602 s = bfd_get_linker_section (dynobj, ".interp");
9605 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9606 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9610 /* Set up .got offsets for local syms, and space for local dynamic
9612 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9614 struct got_entry **lgot_ents;
9615 struct got_entry **end_lgot_ents;
9616 struct plt_entry **local_plt;
9617 struct plt_entry **end_local_plt;
9618 unsigned char *lgot_masks;
9619 bfd_size_type locsymcount;
9620 Elf_Internal_Shdr *symtab_hdr;
9622 if (!is_ppc64_elf (ibfd))
9625 for (s = ibfd->sections; s != NULL; s = s->next)
9627 struct ppc_dyn_relocs *p;
9629 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9631 if (!bfd_is_abs_section (p->sec)
9632 && bfd_is_abs_section (p->sec->output_section))
9634 /* Input section has been discarded, either because
9635 it is a copy of a linkonce section or due to
9636 linker script /DISCARD/, so we'll be discarding
9639 else if (p->count != 0)
9641 asection *srel = elf_section_data (p->sec)->sreloc;
9643 srel = htab->elf.irelplt;
9644 srel->size += p->count * sizeof (Elf64_External_Rela);
9645 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9646 info->flags |= DF_TEXTREL;
9651 lgot_ents = elf_local_got_ents (ibfd);
9655 symtab_hdr = &elf_symtab_hdr (ibfd);
9656 locsymcount = symtab_hdr->sh_info;
9657 end_lgot_ents = lgot_ents + locsymcount;
9658 local_plt = (struct plt_entry **) end_lgot_ents;
9659 end_local_plt = local_plt + locsymcount;
9660 lgot_masks = (unsigned char *) end_local_plt;
9661 s = ppc64_elf_tdata (ibfd)->got;
9662 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9664 struct got_entry **pent, *ent;
9667 while ((ent = *pent) != NULL)
9668 if (ent->got.refcount > 0)
9670 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9672 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9677 unsigned int ent_size = 8;
9678 unsigned int rel_size = sizeof (Elf64_External_Rela);
9680 ent->got.offset = s->size;
9681 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9686 s->size += ent_size;
9687 if ((*lgot_masks & PLT_IFUNC) != 0)
9689 htab->elf.irelplt->size += rel_size;
9690 htab->got_reli_size += rel_size;
9692 else if (info->shared)
9694 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9695 srel->size += rel_size;
9704 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9705 for (; local_plt < end_local_plt; ++local_plt)
9707 struct plt_entry *ent;
9709 for (ent = *local_plt; ent != NULL; ent = ent->next)
9710 if (ent->plt.refcount > 0)
9713 ent->plt.offset = s->size;
9714 s->size += PLT_ENTRY_SIZE (htab);
9716 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9719 ent->plt.offset = (bfd_vma) -1;
9723 /* Allocate global sym .plt and .got entries, and space for global
9724 sym dynamic relocs. */
9725 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9726 /* Stash the end of glink branch table. */
9727 if (htab->glink != NULL)
9728 htab->glink->rawsize = htab->glink->size;
9730 if (!htab->opd_abi && !info->shared)
9731 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9734 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9736 struct got_entry *ent;
9738 if (!is_ppc64_elf (ibfd))
9741 ent = ppc64_tlsld_got (ibfd);
9742 if (ent->got.refcount > 0)
9744 if (!htab->do_multi_toc && first_tlsld != NULL)
9746 ent->is_indirect = TRUE;
9747 ent->got.ent = first_tlsld;
9751 if (first_tlsld == NULL)
9753 s = ppc64_elf_tdata (ibfd)->got;
9754 ent->got.offset = s->size;
9759 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9760 srel->size += sizeof (Elf64_External_Rela);
9765 ent->got.offset = (bfd_vma) -1;
9768 /* We now have determined the sizes of the various dynamic sections.
9769 Allocate memory for them. */
9771 for (s = dynobj->sections; s != NULL; s = s->next)
9773 if ((s->flags & SEC_LINKER_CREATED) == 0)
9776 if (s == htab->brlt || s == htab->relbrlt)
9777 /* These haven't been allocated yet; don't strip. */
9779 else if (s == htab->elf.sgot
9780 || s == htab->elf.splt
9781 || s == htab->elf.iplt
9783 || s == htab->dynbss)
9785 /* Strip this section if we don't need it; see the
9788 else if (s == htab->glink_eh_frame)
9790 if (!bfd_is_abs_section (s->output_section))
9791 /* Not sized yet. */
9794 else if (CONST_STRNEQ (s->name, ".rela"))
9798 if (s != htab->elf.srelplt)
9801 /* We use the reloc_count field as a counter if we need
9802 to copy relocs into the output file. */
9808 /* It's not one of our sections, so don't allocate space. */
9814 /* If we don't need this section, strip it from the
9815 output file. This is mostly to handle .rela.bss and
9816 .rela.plt. We must create both sections in
9817 create_dynamic_sections, because they must be created
9818 before the linker maps input sections to output
9819 sections. The linker does that before
9820 adjust_dynamic_symbol is called, and it is that
9821 function which decides whether anything needs to go
9822 into these sections. */
9823 s->flags |= SEC_EXCLUDE;
9827 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9830 /* Allocate memory for the section contents. We use bfd_zalloc
9831 here in case unused entries are not reclaimed before the
9832 section's contents are written out. This should not happen,
9833 but this way if it does we get a R_PPC64_NONE reloc in .rela
9834 sections instead of garbage.
9835 We also rely on the section contents being zero when writing
9837 s->contents = bfd_zalloc (dynobj, s->size);
9838 if (s->contents == NULL)
9842 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9844 if (!is_ppc64_elf (ibfd))
9847 s = ppc64_elf_tdata (ibfd)->got;
9848 if (s != NULL && s != htab->elf.sgot)
9851 s->flags |= SEC_EXCLUDE;
9854 s->contents = bfd_zalloc (ibfd, s->size);
9855 if (s->contents == NULL)
9859 s = ppc64_elf_tdata (ibfd)->relgot;
9863 s->flags |= SEC_EXCLUDE;
9866 s->contents = bfd_zalloc (ibfd, s->size);
9867 if (s->contents == NULL)
9875 if (htab->elf.dynamic_sections_created)
9877 bfd_boolean tls_opt;
9879 /* Add some entries to the .dynamic section. We fill in the
9880 values later, in ppc64_elf_finish_dynamic_sections, but we
9881 must add the entries now so that we get the correct size for
9882 the .dynamic section. The DT_DEBUG entry is filled in by the
9883 dynamic linker and used by the debugger. */
9884 #define add_dynamic_entry(TAG, VAL) \
9885 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9887 if (info->executable)
9889 if (!add_dynamic_entry (DT_DEBUG, 0))
9893 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
9895 if (!add_dynamic_entry (DT_PLTGOT, 0)
9896 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9897 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9898 || !add_dynamic_entry (DT_JMPREL, 0)
9899 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9903 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
9905 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9906 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9910 tls_opt = (!htab->no_tls_get_addr_opt
9911 && htab->tls_get_addr_fd != NULL
9912 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
9913 if (tls_opt || !htab->opd_abi)
9915 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
9921 if (!add_dynamic_entry (DT_RELA, 0)
9922 || !add_dynamic_entry (DT_RELASZ, 0)
9923 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9926 /* If any dynamic relocs apply to a read-only section,
9927 then we need a DT_TEXTREL entry. */
9928 if ((info->flags & DF_TEXTREL) == 0)
9929 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
9931 if ((info->flags & DF_TEXTREL) != 0)
9933 if (!add_dynamic_entry (DT_TEXTREL, 0))
9938 #undef add_dynamic_entry
9943 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
9946 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
9948 if (h->plt.plist != NULL
9950 && !h->pointer_equality_needed)
9953 return _bfd_elf_hash_symbol (h);
9956 /* Determine the type of stub needed, if any, for a call. */
9958 static inline enum ppc_stub_type
9959 ppc_type_of_stub (asection *input_sec,
9960 const Elf_Internal_Rela *rel,
9961 struct ppc_link_hash_entry **hash,
9962 struct plt_entry **plt_ent,
9963 bfd_vma destination,
9964 unsigned long local_off)
9966 struct ppc_link_hash_entry *h = *hash;
9968 bfd_vma branch_offset;
9969 bfd_vma max_branch_offset;
9970 enum elf_ppc64_reloc_type r_type;
9974 struct plt_entry *ent;
9975 struct ppc_link_hash_entry *fdh = h;
9977 && h->oh->is_func_descriptor)
9979 fdh = ppc_follow_link (h->oh);
9983 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9984 if (ent->addend == rel->r_addend
9985 && ent->plt.offset != (bfd_vma) -1)
9988 return ppc_stub_plt_call;
9991 /* Here, we know we don't have a plt entry. If we don't have a
9992 either a defined function descriptor or a defined entry symbol
9993 in a regular object file, then it is pointless trying to make
9994 any other type of stub. */
9995 if (!is_static_defined (&fdh->elf)
9996 && !is_static_defined (&h->elf))
9997 return ppc_stub_none;
9999 else if (elf_local_got_ents (input_sec->owner) != NULL)
10001 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10002 struct plt_entry **local_plt = (struct plt_entry **)
10003 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10004 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10006 if (local_plt[r_symndx] != NULL)
10008 struct plt_entry *ent;
10010 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10011 if (ent->addend == rel->r_addend
10012 && ent->plt.offset != (bfd_vma) -1)
10015 return ppc_stub_plt_call;
10020 /* Determine where the call point is. */
10021 location = (input_sec->output_offset
10022 + input_sec->output_section->vma
10025 branch_offset = destination - location;
10026 r_type = ELF64_R_TYPE (rel->r_info);
10028 /* Determine if a long branch stub is needed. */
10029 max_branch_offset = 1 << 25;
10030 if (r_type != R_PPC64_REL24)
10031 max_branch_offset = 1 << 15;
10033 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10034 /* We need a stub. Figure out whether a long_branch or plt_branch
10035 is needed later. */
10036 return ppc_stub_long_branch;
10038 return ppc_stub_none;
10041 /* With power7 weakly ordered memory model, it is possible for ld.so
10042 to update a plt entry in one thread and have another thread see a
10043 stale zero toc entry. To avoid this we need some sort of acquire
10044 barrier in the call stub. One solution is to make the load of the
10045 toc word seem to appear to depend on the load of the function entry
10046 word. Another solution is to test for r2 being zero, and branch to
10047 the appropriate glink entry if so.
10049 . fake dep barrier compare
10050 . ld 12,xxx(2) ld 12,xxx(2)
10051 . mtctr 12 mtctr 12
10052 . xor 11,12,12 ld 2,xxx+8(2)
10053 . add 2,2,11 cmpldi 2,0
10054 . ld 2,xxx+8(2) bnectr+
10055 . bctr b <glink_entry>
10057 The solution involving the compare turns out to be faster, so
10058 that's what we use unless the branch won't reach. */
10060 #define ALWAYS_USE_FAKE_DEP 0
10061 #define ALWAYS_EMIT_R2SAVE 0
10063 #define PPC_LO(v) ((v) & 0xffff)
10064 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10065 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10067 static inline unsigned int
10068 plt_stub_size (struct ppc_link_hash_table *htab,
10069 struct ppc_stub_hash_entry *stub_entry,
10072 unsigned size = 12;
10074 if (ALWAYS_EMIT_R2SAVE
10075 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10077 if (PPC_HA (off) != 0)
10082 if (htab->plt_static_chain)
10084 if (htab->plt_thread_safe)
10086 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
10089 if (stub_entry->h != NULL
10090 && (stub_entry->h == htab->tls_get_addr_fd
10091 || stub_entry->h == htab->tls_get_addr)
10092 && !htab->no_tls_get_addr_opt)
10097 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10098 then return the padding needed to do so. */
10099 static inline unsigned int
10100 plt_stub_pad (struct ppc_link_hash_table *htab,
10101 struct ppc_stub_hash_entry *stub_entry,
10104 int stub_align = 1 << htab->plt_stub_align;
10105 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10106 bfd_vma stub_off = stub_entry->stub_sec->size;
10108 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10109 > (stub_size & -stub_align))
10110 return stub_align - (stub_off & (stub_align - 1));
10114 /* Build a .plt call stub. */
10116 static inline bfd_byte *
10117 build_plt_stub (struct ppc_link_hash_table *htab,
10118 struct ppc_stub_hash_entry *stub_entry,
10119 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10121 bfd *obfd = htab->stub_bfd;
10122 bfd_boolean plt_load_toc = htab->opd_abi;
10123 bfd_boolean plt_static_chain = htab->plt_static_chain;
10124 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
10125 bfd_boolean use_fake_dep = plt_thread_safe;
10126 bfd_vma cmp_branch_off = 0;
10128 if (!ALWAYS_USE_FAKE_DEP
10131 && !(stub_entry->h != NULL
10132 && (stub_entry->h == htab->tls_get_addr_fd
10133 || stub_entry->h == htab->tls_get_addr)
10134 && !htab->no_tls_get_addr_opt))
10136 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10137 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10138 / PLT_ENTRY_SIZE (htab));
10139 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10142 if (pltindex > 32768)
10143 glinkoff += (pltindex - 32768) * 4;
10145 + htab->glink->output_offset
10146 + htab->glink->output_section->vma);
10147 from = (p - stub_entry->stub_sec->contents
10148 + 4 * (ALWAYS_EMIT_R2SAVE
10149 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10150 + 4 * (PPC_HA (offset) != 0)
10151 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10152 != PPC_HA (offset))
10153 + 4 * (plt_static_chain != 0)
10155 + stub_entry->stub_sec->output_offset
10156 + stub_entry->stub_sec->output_section->vma);
10157 cmp_branch_off = to - from;
10158 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10161 if (PPC_HA (offset) != 0)
10165 if (ALWAYS_EMIT_R2SAVE
10166 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10167 r[0].r_offset += 4;
10168 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10169 r[1].r_offset = r[0].r_offset + 4;
10170 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10171 r[1].r_addend = r[0].r_addend;
10174 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10176 r[2].r_offset = r[1].r_offset + 4;
10177 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10178 r[2].r_addend = r[0].r_addend;
10182 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10183 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10184 r[2].r_addend = r[0].r_addend + 8;
10185 if (plt_static_chain)
10187 r[3].r_offset = r[2].r_offset + 4;
10188 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10189 r[3].r_addend = r[0].r_addend + 16;
10194 if (ALWAYS_EMIT_R2SAVE
10195 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10196 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10197 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10198 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10200 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10202 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10205 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10210 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10211 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10213 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10214 if (plt_static_chain)
10215 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10222 if (ALWAYS_EMIT_R2SAVE
10223 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10224 r[0].r_offset += 4;
10225 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10228 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10230 r[1].r_offset = r[0].r_offset + 4;
10231 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10232 r[1].r_addend = r[0].r_addend;
10236 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10237 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10238 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10239 if (plt_static_chain)
10241 r[2].r_offset = r[1].r_offset + 4;
10242 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10243 r[2].r_addend = r[0].r_addend + 8;
10248 if (ALWAYS_EMIT_R2SAVE
10249 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10250 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10251 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10253 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10255 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10258 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10263 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10264 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10266 if (plt_static_chain)
10267 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10268 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10271 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10273 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10274 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10275 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10278 bfd_put_32 (obfd, BCTR, p), p += 4;
10282 /* Build a special .plt call stub for __tls_get_addr. */
10284 #define LD_R11_0R3 0xe9630000
10285 #define LD_R12_0R3 0xe9830000
10286 #define MR_R0_R3 0x7c601b78
10287 #define CMPDI_R11_0 0x2c2b0000
10288 #define ADD_R3_R12_R13 0x7c6c6a14
10289 #define BEQLR 0x4d820020
10290 #define MR_R3_R0 0x7c030378
10291 #define STD_R11_0R1 0xf9610000
10292 #define BCTRL 0x4e800421
10293 #define LD_R11_0R1 0xe9610000
10294 #define MTLR_R11 0x7d6803a6
10296 static inline bfd_byte *
10297 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10298 struct ppc_stub_hash_entry *stub_entry,
10299 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10301 bfd *obfd = htab->stub_bfd;
10303 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10304 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10305 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10306 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10307 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10308 bfd_put_32 (obfd, BEQLR, p), p += 4;
10309 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10310 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10311 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10314 r[0].r_offset += 9 * 4;
10315 p = build_plt_stub (htab, stub_entry, p, offset, r);
10316 bfd_put_32 (obfd, BCTRL, p - 4);
10318 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10319 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10320 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10321 bfd_put_32 (obfd, BLR, p), p += 4;
10326 static Elf_Internal_Rela *
10327 get_relocs (asection *sec, int count)
10329 Elf_Internal_Rela *relocs;
10330 struct bfd_elf_section_data *elfsec_data;
10332 elfsec_data = elf_section_data (sec);
10333 relocs = elfsec_data->relocs;
10334 if (relocs == NULL)
10336 bfd_size_type relsize;
10337 relsize = sec->reloc_count * sizeof (*relocs);
10338 relocs = bfd_alloc (sec->owner, relsize);
10339 if (relocs == NULL)
10341 elfsec_data->relocs = relocs;
10342 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10343 sizeof (Elf_Internal_Shdr));
10344 if (elfsec_data->rela.hdr == NULL)
10346 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10347 * sizeof (Elf64_External_Rela));
10348 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10349 sec->reloc_count = 0;
10351 relocs += sec->reloc_count;
10352 sec->reloc_count += count;
10357 get_r2off (struct bfd_link_info *info,
10358 struct ppc_stub_hash_entry *stub_entry)
10360 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10361 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10365 /* Support linking -R objects. Get the toc pointer from the
10368 if (!htab->opd_abi)
10370 asection *opd = stub_entry->h->elf.root.u.def.section;
10371 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10373 if (strcmp (opd->name, ".opd") != 0
10374 || opd->reloc_count != 0)
10376 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10377 stub_entry->h->elf.root.root.string);
10378 bfd_set_error (bfd_error_bad_value);
10381 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10383 r2off = bfd_get_64 (opd->owner, buf);
10384 r2off -= elf_gp (info->output_bfd);
10386 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10391 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10393 struct ppc_stub_hash_entry *stub_entry;
10394 struct ppc_branch_hash_entry *br_entry;
10395 struct bfd_link_info *info;
10396 struct ppc_link_hash_table *htab;
10401 Elf_Internal_Rela *r;
10404 /* Massage our args to the form they really have. */
10405 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10408 htab = ppc_hash_table (info);
10412 /* Make a note of the offset within the stubs for this entry. */
10413 stub_entry->stub_offset = stub_entry->stub_sec->size;
10414 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10416 htab->stub_count[stub_entry->stub_type - 1] += 1;
10417 switch (stub_entry->stub_type)
10419 case ppc_stub_long_branch:
10420 case ppc_stub_long_branch_r2off:
10421 /* Branches are relative. This is where we are going to. */
10422 dest = (stub_entry->target_value
10423 + stub_entry->target_section->output_offset
10424 + stub_entry->target_section->output_section->vma);
10425 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10428 /* And this is where we are coming from. */
10429 off -= (stub_entry->stub_offset
10430 + stub_entry->stub_sec->output_offset
10431 + stub_entry->stub_sec->output_section->vma);
10434 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10436 bfd_vma r2off = get_r2off (info, stub_entry);
10440 htab->stub_error = TRUE;
10443 bfd_put_32 (htab->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10446 if (PPC_HA (r2off) != 0)
10449 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10452 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10456 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10458 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10460 info->callbacks->einfo
10461 (_("%P: long branch stub `%s' offset overflow\n"),
10462 stub_entry->root.string);
10463 htab->stub_error = TRUE;
10467 if (info->emitrelocations)
10469 r = get_relocs (stub_entry->stub_sec, 1);
10472 r->r_offset = loc - stub_entry->stub_sec->contents;
10473 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10474 r->r_addend = dest;
10475 if (stub_entry->h != NULL)
10477 struct elf_link_hash_entry **hashes;
10478 unsigned long symndx;
10479 struct ppc_link_hash_entry *h;
10481 hashes = elf_sym_hashes (htab->stub_bfd);
10482 if (hashes == NULL)
10484 bfd_size_type hsize;
10486 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10487 hashes = bfd_zalloc (htab->stub_bfd, hsize);
10488 if (hashes == NULL)
10490 elf_sym_hashes (htab->stub_bfd) = hashes;
10491 htab->stub_globals = 1;
10493 symndx = htab->stub_globals++;
10495 hashes[symndx] = &h->elf;
10496 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10497 if (h->oh != NULL && h->oh->is_func)
10498 h = ppc_follow_link (h->oh);
10499 if (h->elf.root.u.def.section != stub_entry->target_section)
10500 /* H is an opd symbol. The addend must be zero. */
10504 off = (h->elf.root.u.def.value
10505 + h->elf.root.u.def.section->output_offset
10506 + h->elf.root.u.def.section->output_section->vma);
10507 r->r_addend -= off;
10513 case ppc_stub_plt_branch:
10514 case ppc_stub_plt_branch_r2off:
10515 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10516 stub_entry->root.string + 9,
10518 if (br_entry == NULL)
10520 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10521 stub_entry->root.string);
10522 htab->stub_error = TRUE;
10526 dest = (stub_entry->target_value
10527 + stub_entry->target_section->output_offset
10528 + stub_entry->target_section->output_section->vma);
10529 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10530 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10532 bfd_put_64 (htab->brlt->owner, dest,
10533 htab->brlt->contents + br_entry->offset);
10535 if (br_entry->iter == htab->stub_iteration)
10537 br_entry->iter = 0;
10539 if (htab->relbrlt != NULL)
10541 /* Create a reloc for the branch lookup table entry. */
10542 Elf_Internal_Rela rela;
10545 rela.r_offset = (br_entry->offset
10546 + htab->brlt->output_offset
10547 + htab->brlt->output_section->vma);
10548 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10549 rela.r_addend = dest;
10551 rl = htab->relbrlt->contents;
10552 rl += (htab->relbrlt->reloc_count++
10553 * sizeof (Elf64_External_Rela));
10554 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10556 else if (info->emitrelocations)
10558 r = get_relocs (htab->brlt, 1);
10561 /* brlt, being SEC_LINKER_CREATED does not go through the
10562 normal reloc processing. Symbols and offsets are not
10563 translated from input file to output file form, so
10564 set up the offset per the output file. */
10565 r->r_offset = (br_entry->offset
10566 + htab->brlt->output_offset
10567 + htab->brlt->output_section->vma);
10568 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10569 r->r_addend = dest;
10573 dest = (br_entry->offset
10574 + htab->brlt->output_offset
10575 + htab->brlt->output_section->vma);
10578 - elf_gp (htab->brlt->output_section->owner)
10579 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10581 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10583 info->callbacks->einfo
10584 (_("%P: linkage table error against `%T'\n"),
10585 stub_entry->root.string);
10586 bfd_set_error (bfd_error_bad_value);
10587 htab->stub_error = TRUE;
10591 if (info->emitrelocations)
10593 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10596 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10597 if (bfd_big_endian (info->output_bfd))
10598 r[0].r_offset += 2;
10599 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10600 r[0].r_offset += 4;
10601 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10602 r[0].r_addend = dest;
10603 if (PPC_HA (off) != 0)
10605 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10606 r[1].r_offset = r[0].r_offset + 4;
10607 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10608 r[1].r_addend = r[0].r_addend;
10612 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10614 if (PPC_HA (off) != 0)
10617 bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc);
10619 bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc);
10624 bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10629 bfd_vma r2off = get_r2off (info, stub_entry);
10631 if (r2off == 0 && htab->opd_abi)
10633 htab->stub_error = TRUE;
10637 bfd_put_32 (htab->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10640 if (PPC_HA (off) != 0)
10643 bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc);
10645 bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc);
10648 bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10650 if (PPC_HA (r2off) != 0)
10654 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10656 if (PPC_LO (r2off) != 0)
10660 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10664 bfd_put_32 (htab->stub_bfd, MTCTR_R12, loc);
10666 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10669 case ppc_stub_plt_call:
10670 case ppc_stub_plt_call_r2save:
10671 if (stub_entry->h != NULL
10672 && stub_entry->h->is_func_descriptor
10673 && stub_entry->h->oh != NULL)
10675 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10677 /* If the old-ABI "dot-symbol" is undefined make it weak so
10678 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10679 FIXME: We used to define the symbol on one of the call
10680 stubs instead, which is why we test symbol section id
10681 against htab->top_id in various places. Likely all
10682 these checks could now disappear. */
10683 if (fh->elf.root.type == bfd_link_hash_undefined)
10684 fh->elf.root.type = bfd_link_hash_undefweak;
10685 /* Stop undo_symbol_twiddle changing it back to undefined. */
10686 fh->was_undefined = 0;
10689 /* Now build the stub. */
10690 dest = stub_entry->plt_ent->plt.offset & ~1;
10691 if (dest >= (bfd_vma) -2)
10694 plt = htab->elf.splt;
10695 if (!htab->elf.dynamic_sections_created
10696 || stub_entry->h == NULL
10697 || stub_entry->h->elf.dynindx == -1)
10698 plt = htab->elf.iplt;
10700 dest += plt->output_offset + plt->output_section->vma;
10702 if (stub_entry->h == NULL
10703 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10705 Elf_Internal_Rela rela;
10708 rela.r_offset = dest;
10710 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10712 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10713 rela.r_addend = (stub_entry->target_value
10714 + stub_entry->target_section->output_offset
10715 + stub_entry->target_section->output_section->vma);
10717 rl = (htab->elf.irelplt->contents
10718 + (htab->elf.irelplt->reloc_count++
10719 * sizeof (Elf64_External_Rela)));
10720 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10721 stub_entry->plt_ent->plt.offset |= 1;
10725 - elf_gp (plt->output_section->owner)
10726 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10728 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10730 info->callbacks->einfo
10731 (_("%P: linkage table error against `%T'\n"),
10732 stub_entry->h != NULL
10733 ? stub_entry->h->elf.root.root.string
10735 bfd_set_error (bfd_error_bad_value);
10736 htab->stub_error = TRUE;
10740 if (htab->plt_stub_align != 0)
10742 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10744 stub_entry->stub_sec->size += pad;
10745 stub_entry->stub_offset = stub_entry->stub_sec->size;
10750 if (info->emitrelocations)
10752 r = get_relocs (stub_entry->stub_sec,
10753 ((PPC_HA (off) != 0)
10755 ? 2 + (htab->plt_static_chain
10756 && PPC_HA (off + 16) == PPC_HA (off))
10760 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10761 if (bfd_big_endian (info->output_bfd))
10762 r[0].r_offset += 2;
10763 r[0].r_addend = dest;
10765 if (stub_entry->h != NULL
10766 && (stub_entry->h == htab->tls_get_addr_fd
10767 || stub_entry->h == htab->tls_get_addr)
10768 && !htab->no_tls_get_addr_opt)
10769 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10771 p = build_plt_stub (htab, stub_entry, loc, off, r);
10780 stub_entry->stub_sec->size += size;
10782 if (htab->emit_stub_syms)
10784 struct elf_link_hash_entry *h;
10787 const char *const stub_str[] = { "long_branch",
10788 "long_branch_r2off",
10790 "plt_branch_r2off",
10794 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10795 len2 = strlen (stub_entry->root.string);
10796 name = bfd_malloc (len1 + len2 + 2);
10799 memcpy (name, stub_entry->root.string, 9);
10800 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10801 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10802 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10805 if (h->root.type == bfd_link_hash_new)
10807 h->root.type = bfd_link_hash_defined;
10808 h->root.u.def.section = stub_entry->stub_sec;
10809 h->root.u.def.value = stub_entry->stub_offset;
10810 h->ref_regular = 1;
10811 h->def_regular = 1;
10812 h->ref_regular_nonweak = 1;
10813 h->forced_local = 1;
10821 /* As above, but don't actually build the stub. Just bump offset so
10822 we know stub section sizes, and select plt_branch stubs where
10823 long_branch stubs won't do. */
10826 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10828 struct ppc_stub_hash_entry *stub_entry;
10829 struct bfd_link_info *info;
10830 struct ppc_link_hash_table *htab;
10834 /* Massage our args to the form they really have. */
10835 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10838 htab = ppc_hash_table (info);
10842 if (stub_entry->stub_type == ppc_stub_plt_call
10843 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10846 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10847 if (off >= (bfd_vma) -2)
10849 plt = htab->elf.splt;
10850 if (!htab->elf.dynamic_sections_created
10851 || stub_entry->h == NULL
10852 || stub_entry->h->elf.dynindx == -1)
10853 plt = htab->elf.iplt;
10854 off += (plt->output_offset
10855 + plt->output_section->vma
10856 - elf_gp (plt->output_section->owner)
10857 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10859 size = plt_stub_size (htab, stub_entry, off);
10860 if (htab->plt_stub_align)
10861 size += plt_stub_pad (htab, stub_entry, off);
10862 if (info->emitrelocations)
10864 stub_entry->stub_sec->reloc_count
10865 += ((PPC_HA (off) != 0)
10867 ? 2 + (htab->plt_static_chain
10868 && PPC_HA (off + 16) == PPC_HA (off))
10870 stub_entry->stub_sec->flags |= SEC_RELOC;
10875 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10878 bfd_vma local_off = 0;
10880 off = (stub_entry->target_value
10881 + stub_entry->target_section->output_offset
10882 + stub_entry->target_section->output_section->vma);
10883 off -= (stub_entry->stub_sec->size
10884 + stub_entry->stub_sec->output_offset
10885 + stub_entry->stub_sec->output_section->vma);
10887 /* Reset the stub type from the plt variant in case we now
10888 can reach with a shorter stub. */
10889 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10890 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10893 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10895 r2off = get_r2off (info, stub_entry);
10896 if (r2off == 0 && htab->opd_abi)
10898 htab->stub_error = TRUE;
10902 if (PPC_HA (r2off) != 0)
10907 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10909 /* If the branch offset if too big, use a ppc_stub_plt_branch.
10910 Do the same for -R objects without function descriptors. */
10911 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
10912 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
10915 struct ppc_branch_hash_entry *br_entry;
10917 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10918 stub_entry->root.string + 9,
10920 if (br_entry == NULL)
10922 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10923 stub_entry->root.string);
10924 htab->stub_error = TRUE;
10928 if (br_entry->iter != htab->stub_iteration)
10930 br_entry->iter = htab->stub_iteration;
10931 br_entry->offset = htab->brlt->size;
10932 htab->brlt->size += 8;
10934 if (htab->relbrlt != NULL)
10935 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10936 else if (info->emitrelocations)
10938 htab->brlt->reloc_count += 1;
10939 htab->brlt->flags |= SEC_RELOC;
10943 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10944 off = (br_entry->offset
10945 + htab->brlt->output_offset
10946 + htab->brlt->output_section->vma
10947 - elf_gp (htab->brlt->output_section->owner)
10948 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10950 if (info->emitrelocations)
10952 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10953 stub_entry->stub_sec->flags |= SEC_RELOC;
10956 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10959 if (PPC_HA (off) != 0)
10965 if (PPC_HA (off) != 0)
10968 if (PPC_HA (r2off) != 0)
10970 if (PPC_LO (r2off) != 0)
10974 else if (info->emitrelocations)
10976 stub_entry->stub_sec->reloc_count += 1;
10977 stub_entry->stub_sec->flags |= SEC_RELOC;
10981 stub_entry->stub_sec->size += size;
10985 /* Set up various things so that we can make a list of input sections
10986 for each output section included in the link. Returns -1 on error,
10987 0 when no stubs will be needed, and 1 on success. */
10990 ppc64_elf_setup_section_lists
10991 (struct bfd_link_info *info,
10992 asection *(*add_stub_section) (const char *, asection *),
10993 void (*layout_sections_again) (void))
10996 int top_id, top_index, id;
10998 asection **input_list;
11000 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11004 /* Stash our params away. */
11005 htab->add_stub_section = add_stub_section;
11006 htab->layout_sections_again = layout_sections_again;
11008 /* Find the top input section id. */
11009 for (input_bfd = info->input_bfds, top_id = 3;
11011 input_bfd = input_bfd->link_next)
11013 for (section = input_bfd->sections;
11015 section = section->next)
11017 if (top_id < section->id)
11018 top_id = section->id;
11022 htab->top_id = top_id;
11023 amt = sizeof (struct map_stub) * (top_id + 1);
11024 htab->stub_group = bfd_zmalloc (amt);
11025 if (htab->stub_group == NULL)
11028 /* Set toc_off for com, und, abs and ind sections. */
11029 for (id = 0; id < 3; id++)
11030 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11032 /* We can't use output_bfd->section_count here to find the top output
11033 section index as some sections may have been removed, and
11034 strip_excluded_output_sections doesn't renumber the indices. */
11035 for (section = info->output_bfd->sections, top_index = 0;
11037 section = section->next)
11039 if (top_index < section->index)
11040 top_index = section->index;
11043 htab->top_index = top_index;
11044 amt = sizeof (asection *) * (top_index + 1);
11045 input_list = bfd_zmalloc (amt);
11046 htab->input_list = input_list;
11047 if (input_list == NULL)
11053 /* Set up for first pass at multitoc partitioning. */
11056 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11058 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11060 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11061 htab->toc_bfd = NULL;
11062 htab->toc_first_sec = NULL;
11065 /* The linker repeatedly calls this function for each TOC input section
11066 and linker generated GOT section. Group input bfds such that the toc
11067 within a group is less than 64k in size. */
11070 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11072 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11073 bfd_vma addr, off, limit;
11078 if (!htab->second_toc_pass)
11080 /* Keep track of the first .toc or .got section for this input bfd. */
11081 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11085 htab->toc_bfd = isec->owner;
11086 htab->toc_first_sec = isec;
11089 addr = isec->output_offset + isec->output_section->vma;
11090 off = addr - htab->toc_curr;
11091 limit = 0x80008000;
11092 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11094 if (off + isec->size > limit)
11096 addr = (htab->toc_first_sec->output_offset
11097 + htab->toc_first_sec->output_section->vma);
11098 htab->toc_curr = addr;
11101 /* toc_curr is the base address of this toc group. Set elf_gp
11102 for the input section to be the offset relative to the
11103 output toc base plus 0x8000. Making the input elf_gp an
11104 offset allows us to move the toc as a whole without
11105 recalculating input elf_gp. */
11106 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11107 off += TOC_BASE_OFF;
11109 /* Die if someone uses a linker script that doesn't keep input
11110 file .toc and .got together. */
11112 && elf_gp (isec->owner) != 0
11113 && elf_gp (isec->owner) != off)
11116 elf_gp (isec->owner) = off;
11120 /* During the second pass toc_first_sec points to the start of
11121 a toc group, and toc_curr is used to track the old elf_gp.
11122 We use toc_bfd to ensure we only look at each bfd once. */
11123 if (htab->toc_bfd == isec->owner)
11125 htab->toc_bfd = isec->owner;
11127 if (htab->toc_first_sec == NULL
11128 || htab->toc_curr != elf_gp (isec->owner))
11130 htab->toc_curr = elf_gp (isec->owner);
11131 htab->toc_first_sec = isec;
11133 addr = (htab->toc_first_sec->output_offset
11134 + htab->toc_first_sec->output_section->vma);
11135 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11136 elf_gp (isec->owner) = off;
11141 /* Called via elf_link_hash_traverse to merge GOT entries for global
11145 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11147 if (h->root.type == bfd_link_hash_indirect)
11150 merge_got_entries (&h->got.glist);
11155 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11159 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11161 struct got_entry *gent;
11163 if (h->root.type == bfd_link_hash_indirect)
11166 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11167 if (!gent->is_indirect)
11168 allocate_got (h, (struct bfd_link_info *) inf, gent);
11172 /* Called on the first multitoc pass after the last call to
11173 ppc64_elf_next_toc_section. This function removes duplicate GOT
11177 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11179 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11180 struct bfd *ibfd, *ibfd2;
11181 bfd_boolean done_something;
11183 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11185 if (!htab->do_multi_toc)
11188 /* Merge global sym got entries within a toc group. */
11189 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11191 /* And tlsld_got. */
11192 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11194 struct got_entry *ent, *ent2;
11196 if (!is_ppc64_elf (ibfd))
11199 ent = ppc64_tlsld_got (ibfd);
11200 if (!ent->is_indirect
11201 && ent->got.offset != (bfd_vma) -1)
11203 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
11205 if (!is_ppc64_elf (ibfd2))
11208 ent2 = ppc64_tlsld_got (ibfd2);
11209 if (!ent2->is_indirect
11210 && ent2->got.offset != (bfd_vma) -1
11211 && elf_gp (ibfd2) == elf_gp (ibfd))
11213 ent2->is_indirect = TRUE;
11214 ent2->got.ent = ent;
11220 /* Zap sizes of got sections. */
11221 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11222 htab->elf.irelplt->size -= htab->got_reli_size;
11223 htab->got_reli_size = 0;
11225 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11227 asection *got, *relgot;
11229 if (!is_ppc64_elf (ibfd))
11232 got = ppc64_elf_tdata (ibfd)->got;
11235 got->rawsize = got->size;
11237 relgot = ppc64_elf_tdata (ibfd)->relgot;
11238 relgot->rawsize = relgot->size;
11243 /* Now reallocate the got, local syms first. We don't need to
11244 allocate section contents again since we never increase size. */
11245 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11247 struct got_entry **lgot_ents;
11248 struct got_entry **end_lgot_ents;
11249 struct plt_entry **local_plt;
11250 struct plt_entry **end_local_plt;
11251 unsigned char *lgot_masks;
11252 bfd_size_type locsymcount;
11253 Elf_Internal_Shdr *symtab_hdr;
11256 if (!is_ppc64_elf (ibfd))
11259 lgot_ents = elf_local_got_ents (ibfd);
11263 symtab_hdr = &elf_symtab_hdr (ibfd);
11264 locsymcount = symtab_hdr->sh_info;
11265 end_lgot_ents = lgot_ents + locsymcount;
11266 local_plt = (struct plt_entry **) end_lgot_ents;
11267 end_local_plt = local_plt + locsymcount;
11268 lgot_masks = (unsigned char *) end_local_plt;
11269 s = ppc64_elf_tdata (ibfd)->got;
11270 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11272 struct got_entry *ent;
11274 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11276 unsigned int ent_size = 8;
11277 unsigned int rel_size = sizeof (Elf64_External_Rela);
11279 ent->got.offset = s->size;
11280 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11285 s->size += ent_size;
11286 if ((*lgot_masks & PLT_IFUNC) != 0)
11288 htab->elf.irelplt->size += rel_size;
11289 htab->got_reli_size += rel_size;
11291 else if (info->shared)
11293 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11294 srel->size += rel_size;
11300 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11302 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11304 struct got_entry *ent;
11306 if (!is_ppc64_elf (ibfd))
11309 ent = ppc64_tlsld_got (ibfd);
11310 if (!ent->is_indirect
11311 && ent->got.offset != (bfd_vma) -1)
11313 asection *s = ppc64_elf_tdata (ibfd)->got;
11314 ent->got.offset = s->size;
11318 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11319 srel->size += sizeof (Elf64_External_Rela);
11324 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11325 if (!done_something)
11326 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11330 if (!is_ppc64_elf (ibfd))
11333 got = ppc64_elf_tdata (ibfd)->got;
11336 done_something = got->rawsize != got->size;
11337 if (done_something)
11342 if (done_something)
11343 (*htab->layout_sections_again) ();
11345 /* Set up for second pass over toc sections to recalculate elf_gp
11346 on input sections. */
11347 htab->toc_bfd = NULL;
11348 htab->toc_first_sec = NULL;
11349 htab->second_toc_pass = TRUE;
11350 return done_something;
11353 /* Called after second pass of multitoc partitioning. */
11356 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11358 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11360 /* After the second pass, toc_curr tracks the TOC offset used
11361 for code sections below in ppc64_elf_next_input_section. */
11362 htab->toc_curr = TOC_BASE_OFF;
11365 /* No toc references were found in ISEC. If the code in ISEC makes no
11366 calls, then there's no need to use toc adjusting stubs when branching
11367 into ISEC. Actually, indirect calls from ISEC are OK as they will
11368 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11369 needed, and 2 if a cyclical call-graph was found but no other reason
11370 for a stub was detected. If called from the top level, a return of
11371 2 means the same as a return of 0. */
11374 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11378 /* Mark this section as checked. */
11379 isec->call_check_done = 1;
11381 /* We know none of our code bearing sections will need toc stubs. */
11382 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11385 if (isec->size == 0)
11388 if (isec->output_section == NULL)
11392 if (isec->reloc_count != 0)
11394 Elf_Internal_Rela *relstart, *rel;
11395 Elf_Internal_Sym *local_syms;
11396 struct ppc_link_hash_table *htab;
11398 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11399 info->keep_memory);
11400 if (relstart == NULL)
11403 /* Look for branches to outside of this section. */
11405 htab = ppc_hash_table (info);
11409 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11411 enum elf_ppc64_reloc_type r_type;
11412 unsigned long r_symndx;
11413 struct elf_link_hash_entry *h;
11414 struct ppc_link_hash_entry *eh;
11415 Elf_Internal_Sym *sym;
11417 struct _opd_sec_data *opd;
11421 r_type = ELF64_R_TYPE (rel->r_info);
11422 if (r_type != R_PPC64_REL24
11423 && r_type != R_PPC64_REL14
11424 && r_type != R_PPC64_REL14_BRTAKEN
11425 && r_type != R_PPC64_REL14_BRNTAKEN)
11428 r_symndx = ELF64_R_SYM (rel->r_info);
11429 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11436 /* Calls to dynamic lib functions go through a plt call stub
11438 eh = (struct ppc_link_hash_entry *) h;
11440 && (eh->elf.plt.plist != NULL
11442 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11448 if (sym_sec == NULL)
11449 /* Ignore other undefined symbols. */
11452 /* Assume branches to other sections not included in the
11453 link need stubs too, to cover -R and absolute syms. */
11454 if (sym_sec->output_section == NULL)
11461 sym_value = sym->st_value;
11464 if (h->root.type != bfd_link_hash_defined
11465 && h->root.type != bfd_link_hash_defweak)
11467 sym_value = h->root.u.def.value;
11469 sym_value += rel->r_addend;
11471 /* If this branch reloc uses an opd sym, find the code section. */
11472 opd = get_opd_info (sym_sec);
11475 if (h == NULL && opd->adjust != NULL)
11479 adjust = opd->adjust[sym->st_value / 8];
11481 /* Assume deleted functions won't ever be called. */
11483 sym_value += adjust;
11486 dest = opd_entry_value (sym_sec, sym_value,
11487 &sym_sec, NULL, FALSE);
11488 if (dest == (bfd_vma) -1)
11493 + sym_sec->output_offset
11494 + sym_sec->output_section->vma);
11496 /* Ignore branch to self. */
11497 if (sym_sec == isec)
11500 /* If the called function uses the toc, we need a stub. */
11501 if (sym_sec->has_toc_reloc
11502 || sym_sec->makes_toc_func_call)
11508 /* Assume any branch that needs a long branch stub might in fact
11509 need a plt_branch stub. A plt_branch stub uses r2. */
11510 else if (dest - (isec->output_offset
11511 + isec->output_section->vma
11512 + rel->r_offset) + (1 << 25)
11513 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11521 /* If calling back to a section in the process of being
11522 tested, we can't say for sure that no toc adjusting stubs
11523 are needed, so don't return zero. */
11524 else if (sym_sec->call_check_in_progress)
11527 /* Branches to another section that itself doesn't have any TOC
11528 references are OK. Recursively call ourselves to check. */
11529 else if (!sym_sec->call_check_done)
11533 /* Mark current section as indeterminate, so that other
11534 sections that call back to current won't be marked as
11536 isec->call_check_in_progress = 1;
11537 recur = toc_adjusting_stub_needed (info, sym_sec);
11538 isec->call_check_in_progress = 0;
11549 if (local_syms != NULL
11550 && (elf_symtab_hdr (isec->owner).contents
11551 != (unsigned char *) local_syms))
11553 if (elf_section_data (isec)->relocs != relstart)
11558 && isec->map_head.s != NULL
11559 && (strcmp (isec->output_section->name, ".init") == 0
11560 || strcmp (isec->output_section->name, ".fini") == 0))
11562 if (isec->map_head.s->has_toc_reloc
11563 || isec->map_head.s->makes_toc_func_call)
11565 else if (!isec->map_head.s->call_check_done)
11568 isec->call_check_in_progress = 1;
11569 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11570 isec->call_check_in_progress = 0;
11577 isec->makes_toc_func_call = 1;
11582 /* The linker repeatedly calls this function for each input section,
11583 in the order that input sections are linked into output sections.
11584 Build lists of input sections to determine groupings between which
11585 we may insert linker stubs. */
11588 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11590 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11595 if ((isec->output_section->flags & SEC_CODE) != 0
11596 && isec->output_section->index <= htab->top_index)
11598 asection **list = htab->input_list + isec->output_section->index;
11599 /* Steal the link_sec pointer for our list. */
11600 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11601 /* This happens to make the list in reverse order,
11602 which is what we want. */
11603 PREV_SEC (isec) = *list;
11607 if (htab->multi_toc_needed)
11609 /* Analyse sections that aren't already flagged as needing a
11610 valid toc pointer. Exclude .fixup for the linux kernel.
11611 .fixup contains branches, but only back to the function that
11612 hit an exception. */
11613 if (!(isec->has_toc_reloc
11614 || (isec->flags & SEC_CODE) == 0
11615 || strcmp (isec->name, ".fixup") == 0
11616 || isec->call_check_done))
11618 if (toc_adjusting_stub_needed (info, isec) < 0)
11621 /* Make all sections use the TOC assigned for this object file.
11622 This will be wrong for pasted sections; We fix that in
11623 check_pasted_section(). */
11624 if (elf_gp (isec->owner) != 0)
11625 htab->toc_curr = elf_gp (isec->owner);
11628 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11632 /* Check that all .init and .fini sections use the same toc, if they
11633 have toc relocs. */
11636 check_pasted_section (struct bfd_link_info *info, const char *name)
11638 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11642 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11643 bfd_vma toc_off = 0;
11646 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11647 if (i->has_toc_reloc)
11650 toc_off = htab->stub_group[i->id].toc_off;
11651 else if (toc_off != htab->stub_group[i->id].toc_off)
11656 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11657 if (i->makes_toc_func_call)
11659 toc_off = htab->stub_group[i->id].toc_off;
11663 /* Make sure the whole pasted function uses the same toc offset. */
11665 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11666 htab->stub_group[i->id].toc_off = toc_off;
11672 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11674 return (check_pasted_section (info, ".init")
11675 & check_pasted_section (info, ".fini"));
11678 /* See whether we can group stub sections together. Grouping stub
11679 sections may result in fewer stubs. More importantly, we need to
11680 put all .init* and .fini* stubs at the beginning of the .init or
11681 .fini output sections respectively, because glibc splits the
11682 _init and _fini functions into multiple parts. Putting a stub in
11683 the middle of a function is not a good idea. */
11686 group_sections (struct ppc_link_hash_table *htab,
11687 bfd_size_type stub_group_size,
11688 bfd_boolean stubs_always_before_branch)
11691 bfd_size_type stub14_group_size;
11692 bfd_boolean suppress_size_errors;
11694 suppress_size_errors = FALSE;
11695 stub14_group_size = stub_group_size;
11696 if (stub_group_size == 1)
11698 /* Default values. */
11699 if (stubs_always_before_branch)
11701 stub_group_size = 0x1e00000;
11702 stub14_group_size = 0x7800;
11706 stub_group_size = 0x1c00000;
11707 stub14_group_size = 0x7000;
11709 suppress_size_errors = TRUE;
11712 list = htab->input_list + htab->top_index;
11715 asection *tail = *list;
11716 while (tail != NULL)
11720 bfd_size_type total;
11721 bfd_boolean big_sec;
11725 total = tail->size;
11726 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11727 && ppc64_elf_section_data (tail)->has_14bit_branch
11728 ? stub14_group_size : stub_group_size);
11729 if (big_sec && !suppress_size_errors)
11730 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11731 tail->owner, tail);
11732 curr_toc = htab->stub_group[tail->id].toc_off;
11734 while ((prev = PREV_SEC (curr)) != NULL
11735 && ((total += curr->output_offset - prev->output_offset)
11736 < (ppc64_elf_section_data (prev) != NULL
11737 && ppc64_elf_section_data (prev)->has_14bit_branch
11738 ? stub14_group_size : stub_group_size))
11739 && htab->stub_group[prev->id].toc_off == curr_toc)
11742 /* OK, the size from the start of CURR to the end is less
11743 than stub_group_size and thus can be handled by one stub
11744 section. (or the tail section is itself larger than
11745 stub_group_size, in which case we may be toast.) We
11746 should really be keeping track of the total size of stubs
11747 added here, as stubs contribute to the final output
11748 section size. That's a little tricky, and this way will
11749 only break if stubs added make the total size more than
11750 2^25, ie. for the default stub_group_size, if stubs total
11751 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11754 prev = PREV_SEC (tail);
11755 /* Set up this stub group. */
11756 htab->stub_group[tail->id].link_sec = curr;
11758 while (tail != curr && (tail = prev) != NULL);
11760 /* But wait, there's more! Input sections up to stub_group_size
11761 bytes before the stub section can be handled by it too.
11762 Don't do this if we have a really large section after the
11763 stubs, as adding more stubs increases the chance that
11764 branches may not reach into the stub section. */
11765 if (!stubs_always_before_branch && !big_sec)
11768 while (prev != NULL
11769 && ((total += tail->output_offset - prev->output_offset)
11770 < (ppc64_elf_section_data (prev) != NULL
11771 && ppc64_elf_section_data (prev)->has_14bit_branch
11772 ? stub14_group_size : stub_group_size))
11773 && htab->stub_group[prev->id].toc_off == curr_toc)
11776 prev = PREV_SEC (tail);
11777 htab->stub_group[tail->id].link_sec = curr;
11783 while (list-- != htab->input_list);
11784 free (htab->input_list);
11788 static const unsigned char glink_eh_frame_cie[] =
11790 0, 0, 0, 16, /* length. */
11791 0, 0, 0, 0, /* id. */
11792 1, /* CIE version. */
11793 'z', 'R', 0, /* Augmentation string. */
11794 4, /* Code alignment. */
11795 0x78, /* Data alignment. */
11797 1, /* Augmentation size. */
11798 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11799 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11802 /* Stripping output sections is normally done before dynamic section
11803 symbols have been allocated. This function is called later, and
11804 handles cases like htab->brlt which is mapped to its own output
11808 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11810 if (isec->size == 0
11811 && isec->output_section->size == 0
11812 && !(isec->output_section->flags & SEC_KEEP)
11813 && !bfd_section_removed_from_list (info->output_bfd,
11814 isec->output_section)
11815 && elf_section_data (isec->output_section)->dynindx == 0)
11817 isec->output_section->flags |= SEC_EXCLUDE;
11818 bfd_section_list_remove (info->output_bfd, isec->output_section);
11819 info->output_bfd->section_count--;
11823 /* Determine and set the size of the stub section for a final link.
11825 The basic idea here is to examine all the relocations looking for
11826 PC-relative calls to a target that is unreachable with a "bl"
11830 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11831 bfd_boolean plt_static_chain, int plt_thread_safe,
11832 int plt_stub_align)
11834 bfd_size_type stub_group_size;
11835 bfd_boolean stubs_always_before_branch;
11836 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11841 htab->plt_static_chain = plt_static_chain;
11842 htab->plt_stub_align = plt_stub_align;
11843 if (plt_thread_safe == -1 && !info->executable)
11844 plt_thread_safe = 1;
11845 if (!htab->opd_abi)
11846 plt_thread_safe = 0;
11847 else if (plt_thread_safe == -1)
11849 static const char *const thread_starter[] =
11853 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11855 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11856 "mq_notify", "create_timer",
11860 "GOMP_parallel_start",
11861 "GOMP_parallel_loop_static_start",
11862 "GOMP_parallel_loop_dynamic_start",
11863 "GOMP_parallel_loop_guided_start",
11864 "GOMP_parallel_loop_runtime_start",
11865 "GOMP_parallel_sections_start",
11869 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11871 struct elf_link_hash_entry *h;
11872 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11873 FALSE, FALSE, TRUE);
11874 plt_thread_safe = h != NULL && h->ref_regular;
11875 if (plt_thread_safe)
11879 htab->plt_thread_safe = plt_thread_safe;
11880 stubs_always_before_branch = group_size < 0;
11881 if (group_size < 0)
11882 stub_group_size = -group_size;
11884 stub_group_size = group_size;
11886 group_sections (htab, stub_group_size, stubs_always_before_branch);
11891 unsigned int bfd_indx;
11892 asection *stub_sec;
11894 htab->stub_iteration += 1;
11896 for (input_bfd = info->input_bfds, bfd_indx = 0;
11898 input_bfd = input_bfd->link_next, bfd_indx++)
11900 Elf_Internal_Shdr *symtab_hdr;
11902 Elf_Internal_Sym *local_syms = NULL;
11904 if (!is_ppc64_elf (input_bfd))
11907 /* We'll need the symbol table in a second. */
11908 symtab_hdr = &elf_symtab_hdr (input_bfd);
11909 if (symtab_hdr->sh_info == 0)
11912 /* Walk over each section attached to the input bfd. */
11913 for (section = input_bfd->sections;
11915 section = section->next)
11917 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11919 /* If there aren't any relocs, then there's nothing more
11921 if ((section->flags & SEC_RELOC) == 0
11922 || (section->flags & SEC_ALLOC) == 0
11923 || (section->flags & SEC_LOAD) == 0
11924 || (section->flags & SEC_CODE) == 0
11925 || section->reloc_count == 0)
11928 /* If this section is a link-once section that will be
11929 discarded, then don't create any stubs. */
11930 if (section->output_section == NULL
11931 || section->output_section->owner != info->output_bfd)
11934 /* Get the relocs. */
11936 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11937 info->keep_memory);
11938 if (internal_relocs == NULL)
11939 goto error_ret_free_local;
11941 /* Now examine each relocation. */
11942 irela = internal_relocs;
11943 irelaend = irela + section->reloc_count;
11944 for (; irela < irelaend; irela++)
11946 enum elf_ppc64_reloc_type r_type;
11947 unsigned int r_indx;
11948 enum ppc_stub_type stub_type;
11949 struct ppc_stub_hash_entry *stub_entry;
11950 asection *sym_sec, *code_sec;
11951 bfd_vma sym_value, code_value;
11952 bfd_vma destination;
11953 unsigned long local_off;
11954 bfd_boolean ok_dest;
11955 struct ppc_link_hash_entry *hash;
11956 struct ppc_link_hash_entry *fdh;
11957 struct elf_link_hash_entry *h;
11958 Elf_Internal_Sym *sym;
11960 const asection *id_sec;
11961 struct _opd_sec_data *opd;
11962 struct plt_entry *plt_ent;
11964 r_type = ELF64_R_TYPE (irela->r_info);
11965 r_indx = ELF64_R_SYM (irela->r_info);
11967 if (r_type >= R_PPC64_max)
11969 bfd_set_error (bfd_error_bad_value);
11970 goto error_ret_free_internal;
11973 /* Only look for stubs on branch instructions. */
11974 if (r_type != R_PPC64_REL24
11975 && r_type != R_PPC64_REL14
11976 && r_type != R_PPC64_REL14_BRTAKEN
11977 && r_type != R_PPC64_REL14_BRNTAKEN)
11980 /* Now determine the call target, its name, value,
11982 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11983 r_indx, input_bfd))
11984 goto error_ret_free_internal;
11985 hash = (struct ppc_link_hash_entry *) h;
11992 sym_value = sym->st_value;
11995 else if (hash->elf.root.type == bfd_link_hash_defined
11996 || hash->elf.root.type == bfd_link_hash_defweak)
11998 sym_value = hash->elf.root.u.def.value;
11999 if (sym_sec->output_section != NULL)
12002 else if (hash->elf.root.type == bfd_link_hash_undefweak
12003 || hash->elf.root.type == bfd_link_hash_undefined)
12005 /* Recognise an old ABI func code entry sym, and
12006 use the func descriptor sym instead if it is
12008 if (hash->elf.root.root.string[0] == '.'
12009 && (fdh = lookup_fdh (hash, htab)) != NULL)
12011 if (fdh->elf.root.type == bfd_link_hash_defined
12012 || fdh->elf.root.type == bfd_link_hash_defweak)
12014 sym_sec = fdh->elf.root.u.def.section;
12015 sym_value = fdh->elf.root.u.def.value;
12016 if (sym_sec->output_section != NULL)
12025 bfd_set_error (bfd_error_bad_value);
12026 goto error_ret_free_internal;
12033 sym_value += irela->r_addend;
12034 destination = (sym_value
12035 + sym_sec->output_offset
12036 + sym_sec->output_section->vma);
12037 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12042 code_sec = sym_sec;
12043 code_value = sym_value;
12044 opd = get_opd_info (sym_sec);
12049 if (hash == NULL && opd->adjust != NULL)
12051 long adjust = opd->adjust[sym_value / 8];
12054 code_value += adjust;
12055 sym_value += adjust;
12057 dest = opd_entry_value (sym_sec, sym_value,
12058 &code_sec, &code_value, FALSE);
12059 if (dest != (bfd_vma) -1)
12061 destination = dest;
12064 /* Fixup old ABI sym to point at code
12066 hash->elf.root.type = bfd_link_hash_defweak;
12067 hash->elf.root.u.def.section = code_sec;
12068 hash->elf.root.u.def.value = code_value;
12073 /* Determine what (if any) linker stub is needed. */
12075 stub_type = ppc_type_of_stub (section, irela, &hash,
12076 &plt_ent, destination,
12079 if (stub_type != ppc_stub_plt_call)
12081 /* Check whether we need a TOC adjusting stub.
12082 Since the linker pastes together pieces from
12083 different object files when creating the
12084 _init and _fini functions, it may be that a
12085 call to what looks like a local sym is in
12086 fact a call needing a TOC adjustment. */
12087 if (code_sec != NULL
12088 && code_sec->output_section != NULL
12089 && (htab->stub_group[code_sec->id].toc_off
12090 != htab->stub_group[section->id].toc_off)
12091 && (code_sec->has_toc_reloc
12092 || code_sec->makes_toc_func_call))
12093 stub_type = ppc_stub_long_branch_r2off;
12096 if (stub_type == ppc_stub_none)
12099 /* __tls_get_addr calls might be eliminated. */
12100 if (stub_type != ppc_stub_plt_call
12102 && (hash == htab->tls_get_addr
12103 || hash == htab->tls_get_addr_fd)
12104 && section->has_tls_reloc
12105 && irela != internal_relocs)
12107 /* Get tls info. */
12108 unsigned char *tls_mask;
12110 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12111 irela - 1, input_bfd))
12112 goto error_ret_free_internal;
12113 if (*tls_mask != 0)
12117 if (stub_type == ppc_stub_plt_call
12118 && irela + 1 < irelaend
12119 && irela[1].r_offset == irela->r_offset + 4
12120 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12122 if (!tocsave_find (htab, INSERT,
12123 &local_syms, irela + 1, input_bfd))
12124 goto error_ret_free_internal;
12126 else if (stub_type == ppc_stub_plt_call)
12127 stub_type = ppc_stub_plt_call_r2save;
12129 /* Support for grouping stub sections. */
12130 id_sec = htab->stub_group[section->id].link_sec;
12132 /* Get the name of this stub. */
12133 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12135 goto error_ret_free_internal;
12137 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12138 stub_name, FALSE, FALSE);
12139 if (stub_entry != NULL)
12141 /* The proper stub has already been created. */
12143 if (stub_type == ppc_stub_plt_call_r2save)
12144 stub_entry->stub_type = stub_type;
12148 stub_entry = ppc_add_stub (stub_name, section, info);
12149 if (stub_entry == NULL)
12152 error_ret_free_internal:
12153 if (elf_section_data (section)->relocs == NULL)
12154 free (internal_relocs);
12155 error_ret_free_local:
12156 if (local_syms != NULL
12157 && (symtab_hdr->contents
12158 != (unsigned char *) local_syms))
12163 stub_entry->stub_type = stub_type;
12164 if (stub_type != ppc_stub_plt_call
12165 && stub_type != ppc_stub_plt_call_r2save)
12167 stub_entry->target_value = code_value;
12168 stub_entry->target_section = code_sec;
12172 stub_entry->target_value = sym_value;
12173 stub_entry->target_section = sym_sec;
12175 stub_entry->h = hash;
12176 stub_entry->plt_ent = plt_ent;
12177 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12179 if (stub_entry->h != NULL)
12180 htab->stub_globals += 1;
12183 /* We're done with the internal relocs, free them. */
12184 if (elf_section_data (section)->relocs != internal_relocs)
12185 free (internal_relocs);
12188 if (local_syms != NULL
12189 && symtab_hdr->contents != (unsigned char *) local_syms)
12191 if (!info->keep_memory)
12194 symtab_hdr->contents = (unsigned char *) local_syms;
12198 /* We may have added some stubs. Find out the new size of the
12200 for (stub_sec = htab->stub_bfd->sections;
12202 stub_sec = stub_sec->next)
12203 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12205 stub_sec->rawsize = stub_sec->size;
12206 stub_sec->size = 0;
12207 stub_sec->reloc_count = 0;
12208 stub_sec->flags &= ~SEC_RELOC;
12211 htab->brlt->size = 0;
12212 htab->brlt->reloc_count = 0;
12213 htab->brlt->flags &= ~SEC_RELOC;
12214 if (htab->relbrlt != NULL)
12215 htab->relbrlt->size = 0;
12217 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12219 if (info->emitrelocations
12220 && htab->glink != NULL && htab->glink->size != 0)
12222 htab->glink->reloc_count = 1;
12223 htab->glink->flags |= SEC_RELOC;
12226 if (htab->glink_eh_frame != NULL
12227 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12228 && htab->glink_eh_frame->output_section->size != 0)
12230 size_t size = 0, align;
12232 for (stub_sec = htab->stub_bfd->sections;
12234 stub_sec = stub_sec->next)
12235 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12237 if (htab->glink != NULL && htab->glink->size != 0)
12240 size += sizeof (glink_eh_frame_cie);
12242 align <<= htab->glink_eh_frame->output_section->alignment_power;
12244 size = (size + align) & ~align;
12245 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12246 htab->glink_eh_frame->size = size;
12249 if (htab->plt_stub_align != 0)
12250 for (stub_sec = htab->stub_bfd->sections;
12252 stub_sec = stub_sec->next)
12253 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12254 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12255 & (-1 << htab->plt_stub_align));
12257 for (stub_sec = htab->stub_bfd->sections;
12259 stub_sec = stub_sec->next)
12260 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12261 && stub_sec->rawsize != stub_sec->size)
12264 /* Exit from this loop when no stubs have been added, and no stubs
12265 have changed size. */
12266 if (stub_sec == NULL
12267 && (htab->glink_eh_frame == NULL
12268 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12271 /* Ask the linker to do its stuff. */
12272 (*htab->layout_sections_again) ();
12275 maybe_strip_output (info, htab->brlt);
12276 if (htab->glink_eh_frame != NULL)
12277 maybe_strip_output (info, htab->glink_eh_frame);
12282 /* Called after we have determined section placement. If sections
12283 move, we'll be called again. Provide a value for TOCstart. */
12286 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12291 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12292 order. The TOC starts where the first of these sections starts. */
12293 s = bfd_get_section_by_name (obfd, ".got");
12294 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12295 s = bfd_get_section_by_name (obfd, ".toc");
12296 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12297 s = bfd_get_section_by_name (obfd, ".tocbss");
12298 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12299 s = bfd_get_section_by_name (obfd, ".plt");
12300 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12302 /* This may happen for
12303 o references to TOC base (SYM@toc / TOC[tc0]) without a
12305 o bad linker script
12306 o --gc-sections and empty TOC sections
12308 FIXME: Warn user? */
12310 /* Look for a likely section. We probably won't even be
12312 for (s = obfd->sections; s != NULL; s = s->next)
12313 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12315 == (SEC_ALLOC | SEC_SMALL_DATA))
12318 for (s = obfd->sections; s != NULL; s = s->next)
12319 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12320 == (SEC_ALLOC | SEC_SMALL_DATA))
12323 for (s = obfd->sections; s != NULL; s = s->next)
12324 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12328 for (s = obfd->sections; s != NULL; s = s->next)
12329 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12335 TOCstart = s->output_section->vma + s->output_offset;
12337 _bfd_set_gp_value (obfd, TOCstart);
12339 if (info != NULL && s != NULL && is_ppc64_elf (obfd))
12341 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12344 && htab->elf.hgot != NULL)
12346 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12347 htab->elf.hgot->root.u.def.section = s;
12353 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12354 write out any global entry stubs. */
12357 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12359 struct bfd_link_info *info;
12360 struct ppc_link_hash_table *htab;
12361 struct plt_entry *pent;
12364 if (h->root.type == bfd_link_hash_indirect)
12367 if (!h->pointer_equality_needed)
12370 if (h->def_regular)
12374 htab = ppc_hash_table (info);
12379 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12380 if (pent->plt.offset != (bfd_vma) -1
12381 && pent->addend == 0)
12387 p = s->contents + h->root.u.def.value;
12388 plt = htab->elf.splt;
12389 if (!htab->elf.dynamic_sections_created
12390 || h->dynindx == -1)
12391 plt = htab->elf.iplt;
12392 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12393 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12395 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12397 info->callbacks->einfo
12398 (_("%P: linkage table error against `%T'\n"),
12399 h->root.root.string);
12400 bfd_set_error (bfd_error_bad_value);
12401 htab->stub_error = TRUE;
12404 if (PPC_HA (off) != 0)
12406 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12409 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12411 bfd_put_32 (s->owner, MTCTR_R12, p);
12413 bfd_put_32 (s->owner, BCTR, p);
12419 /* Build all the stubs associated with the current output file.
12420 The stubs are kept in a hash table attached to the main linker
12421 hash table. This function is called via gldelf64ppc_finish. */
12424 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
12425 struct bfd_link_info *info,
12428 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12429 asection *stub_sec;
12431 int stub_sec_count = 0;
12436 htab->emit_stub_syms = emit_stub_syms;
12438 /* Allocate memory to hold the linker stubs. */
12439 for (stub_sec = htab->stub_bfd->sections;
12441 stub_sec = stub_sec->next)
12442 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12443 && stub_sec->size != 0)
12445 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
12446 if (stub_sec->contents == NULL)
12448 /* We want to check that built size is the same as calculated
12449 size. rawsize is a convenient location to use. */
12450 stub_sec->rawsize = stub_sec->size;
12451 stub_sec->size = 0;
12454 if (htab->glink != NULL && htab->glink->size != 0)
12459 /* Build the .glink plt call stub. */
12460 if (htab->emit_stub_syms)
12462 struct elf_link_hash_entry *h;
12463 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12464 TRUE, FALSE, FALSE);
12467 if (h->root.type == bfd_link_hash_new)
12469 h->root.type = bfd_link_hash_defined;
12470 h->root.u.def.section = htab->glink;
12471 h->root.u.def.value = 8;
12472 h->ref_regular = 1;
12473 h->def_regular = 1;
12474 h->ref_regular_nonweak = 1;
12475 h->forced_local = 1;
12479 plt0 = (htab->elf.splt->output_section->vma
12480 + htab->elf.splt->output_offset
12482 if (info->emitrelocations)
12484 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12487 r->r_offset = (htab->glink->output_offset
12488 + htab->glink->output_section->vma);
12489 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12490 r->r_addend = plt0;
12492 p = htab->glink->contents;
12493 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12494 bfd_put_64 (htab->glink->owner, plt0, p);
12498 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12500 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12502 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12504 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12506 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12508 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12510 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12512 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12514 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12516 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12521 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12523 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12525 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12527 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12529 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12531 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12533 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12535 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12537 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12539 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12541 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12543 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12546 bfd_put_32 (htab->glink->owner, BCTR, p);
12548 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12550 bfd_put_32 (htab->glink->owner, NOP, p);
12554 /* Build the .glink lazy link call stubs. */
12556 while (p < htab->glink->contents + htab->glink->rawsize)
12562 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12567 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12569 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12574 bfd_put_32 (htab->glink->owner,
12575 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12580 /* Build .glink global entry stubs. */
12581 if (htab->glink->size > htab->glink->rawsize)
12582 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12585 if (htab->brlt->size != 0)
12587 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12589 if (htab->brlt->contents == NULL)
12592 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12594 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12595 htab->relbrlt->size);
12596 if (htab->relbrlt->contents == NULL)
12600 if (htab->glink_eh_frame != NULL
12601 && htab->glink_eh_frame->size != 0)
12604 bfd_byte *last_fde;
12605 size_t last_fde_len, size, align, pad;
12607 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12610 htab->glink_eh_frame->contents = p;
12613 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12615 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12616 /* CIE length (rewrite in case little-endian). */
12617 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12618 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12619 p += sizeof (glink_eh_frame_cie);
12621 for (stub_sec = htab->stub_bfd->sections;
12623 stub_sec = stub_sec->next)
12624 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12629 bfd_put_32 (htab->elf.dynobj, 16, p);
12632 val = p - htab->glink_eh_frame->contents;
12633 bfd_put_32 (htab->elf.dynobj, val, p);
12635 /* Offset to stub section. */
12636 val = (stub_sec->output_section->vma
12637 + stub_sec->output_offset);
12638 val -= (htab->glink_eh_frame->output_section->vma
12639 + htab->glink_eh_frame->output_offset);
12640 val -= p - htab->glink_eh_frame->contents;
12641 if (val + 0x80000000 > 0xffffffff)
12643 info->callbacks->einfo
12644 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12648 bfd_put_32 (htab->elf.dynobj, val, p);
12650 /* stub section size. */
12651 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12653 /* Augmentation. */
12658 if (htab->glink != NULL && htab->glink->size != 0)
12663 bfd_put_32 (htab->elf.dynobj, 20, p);
12666 val = p - htab->glink_eh_frame->contents;
12667 bfd_put_32 (htab->elf.dynobj, val, p);
12669 /* Offset to .glink. */
12670 val = (htab->glink->output_section->vma
12671 + htab->glink->output_offset
12673 val -= (htab->glink_eh_frame->output_section->vma
12674 + htab->glink_eh_frame->output_offset);
12675 val -= p - htab->glink_eh_frame->contents;
12676 if (val + 0x80000000 > 0xffffffff)
12678 info->callbacks->einfo
12679 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12680 htab->glink->name);
12683 bfd_put_32 (htab->elf.dynobj, val, p);
12686 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12688 /* Augmentation. */
12691 *p++ = DW_CFA_advance_loc + 1;
12692 *p++ = DW_CFA_register;
12695 *p++ = DW_CFA_advance_loc + 4;
12696 *p++ = DW_CFA_restore_extended;
12699 /* Subsume any padding into the last FDE if user .eh_frame
12700 sections are aligned more than glink_eh_frame. Otherwise any
12701 zero padding will be seen as a terminator. */
12702 size = p - htab->glink_eh_frame->contents;
12704 align <<= htab->glink_eh_frame->output_section->alignment_power;
12706 pad = ((size + align) & ~align) - size;
12707 htab->glink_eh_frame->size = size + pad;
12708 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12711 /* Build the stubs as directed by the stub hash table. */
12712 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12714 if (htab->relbrlt != NULL)
12715 htab->relbrlt->reloc_count = 0;
12717 if (htab->plt_stub_align != 0)
12718 for (stub_sec = htab->stub_bfd->sections;
12720 stub_sec = stub_sec->next)
12721 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12722 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12723 & (-1 << htab->plt_stub_align));
12725 for (stub_sec = htab->stub_bfd->sections;
12727 stub_sec = stub_sec->next)
12728 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12730 stub_sec_count += 1;
12731 if (stub_sec->rawsize != stub_sec->size)
12735 if (stub_sec != NULL
12736 || (htab->glink_eh_frame != NULL
12737 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12739 htab->stub_error = TRUE;
12740 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12743 if (htab->stub_error)
12748 *stats = bfd_malloc (500);
12749 if (*stats == NULL)
12752 sprintf (*stats, _("linker stubs in %u group%s\n"
12754 " toc adjust %lu\n"
12755 " long branch %lu\n"
12756 " long toc adj %lu\n"
12758 " plt call toc %lu"),
12760 stub_sec_count == 1 ? "" : "s",
12761 htab->stub_count[ppc_stub_long_branch - 1],
12762 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12763 htab->stub_count[ppc_stub_plt_branch - 1],
12764 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12765 htab->stub_count[ppc_stub_plt_call - 1],
12766 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12771 /* This function undoes the changes made by add_symbol_adjust. */
12774 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12776 struct ppc_link_hash_entry *eh;
12778 if (h->root.type == bfd_link_hash_indirect)
12781 eh = (struct ppc_link_hash_entry *) h;
12782 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12785 eh->elf.root.type = bfd_link_hash_undefined;
12790 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12792 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12795 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12798 /* What to do when ld finds relocations against symbols defined in
12799 discarded sections. */
12801 static unsigned int
12802 ppc64_elf_action_discarded (asection *sec)
12804 if (strcmp (".opd", sec->name) == 0)
12807 if (strcmp (".toc", sec->name) == 0)
12810 if (strcmp (".toc1", sec->name) == 0)
12813 return _bfd_elf_default_action_discarded (sec);
12816 /* The RELOCATE_SECTION function is called by the ELF backend linker
12817 to handle the relocations for a section.
12819 The relocs are always passed as Rela structures; if the section
12820 actually uses Rel structures, the r_addend field will always be
12823 This function is responsible for adjust the section contents as
12824 necessary, and (if using Rela relocs and generating a
12825 relocatable output file) adjusting the reloc addend as
12828 This function does not have to worry about setting the reloc
12829 address or the reloc symbol index.
12831 LOCAL_SYMS is a pointer to the swapped in local symbols.
12833 LOCAL_SECTIONS is an array giving the section in the input file
12834 corresponding to the st_shndx field of each local symbol.
12836 The global hash table entry for the global symbols can be found
12837 via elf_sym_hashes (input_bfd).
12839 When generating relocatable output, this function must handle
12840 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12841 going to be the section symbol corresponding to the output
12842 section, which means that the addend must be adjusted
12846 ppc64_elf_relocate_section (bfd *output_bfd,
12847 struct bfd_link_info *info,
12849 asection *input_section,
12850 bfd_byte *contents,
12851 Elf_Internal_Rela *relocs,
12852 Elf_Internal_Sym *local_syms,
12853 asection **local_sections)
12855 struct ppc_link_hash_table *htab;
12856 Elf_Internal_Shdr *symtab_hdr;
12857 struct elf_link_hash_entry **sym_hashes;
12858 Elf_Internal_Rela *rel;
12859 Elf_Internal_Rela *relend;
12860 Elf_Internal_Rela outrel;
12862 struct got_entry **local_got_ents;
12864 bfd_boolean ret = TRUE;
12865 bfd_boolean is_opd;
12866 /* Assume 'at' branch hints. */
12867 bfd_boolean is_isa_v2 = TRUE;
12868 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12870 /* Initialize howto table if needed. */
12871 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12874 htab = ppc_hash_table (info);
12878 /* Don't relocate stub sections. */
12879 if (input_section->owner == htab->stub_bfd)
12882 BFD_ASSERT (is_ppc64_elf (input_bfd));
12884 local_got_ents = elf_local_got_ents (input_bfd);
12885 TOCstart = elf_gp (output_bfd);
12886 symtab_hdr = &elf_symtab_hdr (input_bfd);
12887 sym_hashes = elf_sym_hashes (input_bfd);
12888 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12891 relend = relocs + input_section->reloc_count;
12892 for (; rel < relend; rel++)
12894 enum elf_ppc64_reloc_type r_type;
12896 bfd_reloc_status_type r;
12897 Elf_Internal_Sym *sym;
12899 struct elf_link_hash_entry *h_elf;
12900 struct ppc_link_hash_entry *h;
12901 struct ppc_link_hash_entry *fdh;
12902 const char *sym_name;
12903 unsigned long r_symndx, toc_symndx;
12904 bfd_vma toc_addend;
12905 unsigned char tls_mask, tls_gd, tls_type;
12906 unsigned char sym_type;
12907 bfd_vma relocation;
12908 bfd_boolean unresolved_reloc;
12909 bfd_boolean warned;
12910 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
12913 struct ppc_stub_hash_entry *stub_entry;
12914 bfd_vma max_br_offset;
12916 const Elf_Internal_Rela orig_rel = *rel;
12918 r_type = ELF64_R_TYPE (rel->r_info);
12919 r_symndx = ELF64_R_SYM (rel->r_info);
12921 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12922 symbol of the previous ADDR64 reloc. The symbol gives us the
12923 proper TOC base to use. */
12924 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12926 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12928 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12934 unresolved_reloc = FALSE;
12937 if (r_symndx < symtab_hdr->sh_info)
12939 /* It's a local symbol. */
12940 struct _opd_sec_data *opd;
12942 sym = local_syms + r_symndx;
12943 sec = local_sections[r_symndx];
12944 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12945 sym_type = ELF64_ST_TYPE (sym->st_info);
12946 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12947 opd = get_opd_info (sec);
12948 if (opd != NULL && opd->adjust != NULL)
12950 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12955 /* If this is a relocation against the opd section sym
12956 and we have edited .opd, adjust the reloc addend so
12957 that ld -r and ld --emit-relocs output is correct.
12958 If it is a reloc against some other .opd symbol,
12959 then the symbol value will be adjusted later. */
12960 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12961 rel->r_addend += adjust;
12963 relocation += adjust;
12969 bfd_boolean ignored;
12971 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12972 r_symndx, symtab_hdr, sym_hashes,
12973 h_elf, sec, relocation,
12974 unresolved_reloc, warned, ignored);
12975 sym_name = h_elf->root.root.string;
12976 sym_type = h_elf->type;
12978 && sec->owner == output_bfd
12979 && strcmp (sec->name, ".opd") == 0)
12981 /* This is a symbol defined in a linker script. All
12982 such are defined in output sections, even those
12983 defined by simple assignment from a symbol defined in
12984 an input section. Transfer the symbol to an
12985 appropriate input .opd section, so that a branch to
12986 this symbol will be mapped to the location specified
12987 by the opd entry. */
12988 struct bfd_link_order *lo;
12989 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
12990 if (lo->type == bfd_indirect_link_order)
12992 asection *isec = lo->u.indirect.section;
12993 if (h_elf->root.u.def.value >= isec->output_offset
12994 && h_elf->root.u.def.value < (isec->output_offset
12997 h_elf->root.u.def.value -= isec->output_offset;
12998 h_elf->root.u.def.section = isec;
13005 h = (struct ppc_link_hash_entry *) h_elf;
13007 if (sec != NULL && discarded_section (sec))
13008 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13010 ppc64_elf_howto_table[r_type], 0,
13013 if (info->relocatable)
13016 if (h != NULL && &h->elf == htab->elf.hgot)
13018 relocation = (TOCstart
13019 + htab->stub_group[input_section->id].toc_off);
13020 sec = bfd_abs_section_ptr;
13021 unresolved_reloc = FALSE;
13024 /* TLS optimizations. Replace instruction sequences and relocs
13025 based on information we collected in tls_optimize. We edit
13026 RELOCS so that --emit-relocs will output something sensible
13027 for the final instruction stream. */
13032 tls_mask = h->tls_mask;
13033 else if (local_got_ents != NULL)
13035 struct plt_entry **local_plt = (struct plt_entry **)
13036 (local_got_ents + symtab_hdr->sh_info);
13037 unsigned char *lgot_masks = (unsigned char *)
13038 (local_plt + symtab_hdr->sh_info);
13039 tls_mask = lgot_masks[r_symndx];
13042 && (r_type == R_PPC64_TLS
13043 || r_type == R_PPC64_TLSGD
13044 || r_type == R_PPC64_TLSLD))
13046 /* Check for toc tls entries. */
13047 unsigned char *toc_tls;
13049 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13050 &local_syms, rel, input_bfd))
13054 tls_mask = *toc_tls;
13057 /* Check that tls relocs are used with tls syms, and non-tls
13058 relocs are used with non-tls syms. */
13059 if (r_symndx != STN_UNDEF
13060 && r_type != R_PPC64_NONE
13062 || h->elf.root.type == bfd_link_hash_defined
13063 || h->elf.root.type == bfd_link_hash_defweak)
13064 && (IS_PPC64_TLS_RELOC (r_type)
13065 != (sym_type == STT_TLS
13066 || (sym_type == STT_SECTION
13067 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13070 && (r_type == R_PPC64_TLS
13071 || r_type == R_PPC64_TLSGD
13072 || r_type == R_PPC64_TLSLD))
13073 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13076 info->callbacks->einfo
13077 (!IS_PPC64_TLS_RELOC (r_type)
13078 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13079 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13080 input_bfd, input_section, rel->r_offset,
13081 ppc64_elf_howto_table[r_type]->name,
13085 /* Ensure reloc mapping code below stays sane. */
13086 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13087 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13088 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13089 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13090 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13091 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13092 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13093 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13094 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13095 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13103 case R_PPC64_LO_DS_OPT:
13104 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13105 if ((insn & (0x3f << 26)) != 58u << 26)
13107 insn += (14u << 26) - (58u << 26);
13108 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13109 r_type = R_PPC64_TOC16_LO;
13110 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13113 case R_PPC64_TOC16:
13114 case R_PPC64_TOC16_LO:
13115 case R_PPC64_TOC16_DS:
13116 case R_PPC64_TOC16_LO_DS:
13118 /* Check for toc tls entries. */
13119 unsigned char *toc_tls;
13122 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13123 &local_syms, rel, input_bfd);
13129 tls_mask = *toc_tls;
13130 if (r_type == R_PPC64_TOC16_DS
13131 || r_type == R_PPC64_TOC16_LO_DS)
13134 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13139 /* If we found a GD reloc pair, then we might be
13140 doing a GD->IE transition. */
13143 tls_gd = TLS_TPRELGD;
13144 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13147 else if (retval == 3)
13149 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13157 case R_PPC64_GOT_TPREL16_HI:
13158 case R_PPC64_GOT_TPREL16_HA:
13160 && (tls_mask & TLS_TPREL) == 0)
13162 rel->r_offset -= d_offset;
13163 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13164 r_type = R_PPC64_NONE;
13165 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13169 case R_PPC64_GOT_TPREL16_DS:
13170 case R_PPC64_GOT_TPREL16_LO_DS:
13172 && (tls_mask & TLS_TPREL) == 0)
13175 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13177 insn |= 0x3c0d0000; /* addis 0,13,0 */
13178 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13179 r_type = R_PPC64_TPREL16_HA;
13180 if (toc_symndx != 0)
13182 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13183 rel->r_addend = toc_addend;
13184 /* We changed the symbol. Start over in order to
13185 get h, sym, sec etc. right. */
13190 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13196 && (tls_mask & TLS_TPREL) == 0)
13198 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13199 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13202 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13203 /* Was PPC64_TLS which sits on insn boundary, now
13204 PPC64_TPREL16_LO which is at low-order half-word. */
13205 rel->r_offset += d_offset;
13206 r_type = R_PPC64_TPREL16_LO;
13207 if (toc_symndx != 0)
13209 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13210 rel->r_addend = toc_addend;
13211 /* We changed the symbol. Start over in order to
13212 get h, sym, sec etc. right. */
13217 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13221 case R_PPC64_GOT_TLSGD16_HI:
13222 case R_PPC64_GOT_TLSGD16_HA:
13223 tls_gd = TLS_TPRELGD;
13224 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13228 case R_PPC64_GOT_TLSLD16_HI:
13229 case R_PPC64_GOT_TLSLD16_HA:
13230 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13233 if ((tls_mask & tls_gd) != 0)
13234 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13235 + R_PPC64_GOT_TPREL16_DS);
13238 rel->r_offset -= d_offset;
13239 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13240 r_type = R_PPC64_NONE;
13242 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13246 case R_PPC64_GOT_TLSGD16:
13247 case R_PPC64_GOT_TLSGD16_LO:
13248 tls_gd = TLS_TPRELGD;
13249 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13253 case R_PPC64_GOT_TLSLD16:
13254 case R_PPC64_GOT_TLSLD16_LO:
13255 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13257 unsigned int insn1, insn2, insn3;
13261 offset = (bfd_vma) -1;
13262 /* If not using the newer R_PPC64_TLSGD/LD to mark
13263 __tls_get_addr calls, we must trust that the call
13264 stays with its arg setup insns, ie. that the next
13265 reloc is the __tls_get_addr call associated with
13266 the current reloc. Edit both insns. */
13267 if (input_section->has_tls_get_addr_call
13268 && rel + 1 < relend
13269 && branch_reloc_hash_match (input_bfd, rel + 1,
13270 htab->tls_get_addr,
13271 htab->tls_get_addr_fd))
13272 offset = rel[1].r_offset;
13273 if ((tls_mask & tls_gd) != 0)
13276 insn1 = bfd_get_32 (output_bfd,
13277 contents + rel->r_offset - d_offset);
13278 insn1 &= (1 << 26) - (1 << 2);
13279 insn1 |= 58 << 26; /* ld */
13280 insn2 = 0x7c636a14; /* add 3,3,13 */
13281 if (offset != (bfd_vma) -1)
13282 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13283 if ((tls_mask & TLS_EXPLICIT) == 0)
13284 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13285 + R_PPC64_GOT_TPREL16_DS);
13287 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13288 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13293 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13294 insn2 = 0x38630000; /* addi 3,3,0 */
13297 /* Was an LD reloc. */
13299 sec = local_sections[toc_symndx];
13301 r_symndx < symtab_hdr->sh_info;
13303 if (local_sections[r_symndx] == sec)
13305 if (r_symndx >= symtab_hdr->sh_info)
13306 r_symndx = STN_UNDEF;
13307 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13308 if (r_symndx != STN_UNDEF)
13309 rel->r_addend -= (local_syms[r_symndx].st_value
13310 + sec->output_offset
13311 + sec->output_section->vma);
13313 else if (toc_symndx != 0)
13315 r_symndx = toc_symndx;
13316 rel->r_addend = toc_addend;
13318 r_type = R_PPC64_TPREL16_HA;
13319 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13320 if (offset != (bfd_vma) -1)
13322 rel[1].r_info = ELF64_R_INFO (r_symndx,
13323 R_PPC64_TPREL16_LO);
13324 rel[1].r_offset = offset + d_offset;
13325 rel[1].r_addend = rel->r_addend;
13328 bfd_put_32 (output_bfd, insn1,
13329 contents + rel->r_offset - d_offset);
13330 if (offset != (bfd_vma) -1)
13332 insn3 = bfd_get_32 (output_bfd,
13333 contents + offset + 4);
13335 || insn3 == CROR_151515 || insn3 == CROR_313131)
13337 rel[1].r_offset += 4;
13338 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13341 bfd_put_32 (output_bfd, insn2, contents + offset);
13343 if ((tls_mask & tls_gd) == 0
13344 && (tls_gd == 0 || toc_symndx != 0))
13346 /* We changed the symbol. Start over in order
13347 to get h, sym, sec etc. right. */
13354 case R_PPC64_TLSGD:
13355 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13357 unsigned int insn2, insn3;
13358 bfd_vma offset = rel->r_offset;
13360 if ((tls_mask & TLS_TPRELGD) != 0)
13363 r_type = R_PPC64_NONE;
13364 insn2 = 0x7c636a14; /* add 3,3,13 */
13369 if (toc_symndx != 0)
13371 r_symndx = toc_symndx;
13372 rel->r_addend = toc_addend;
13374 r_type = R_PPC64_TPREL16_LO;
13375 rel->r_offset = offset + d_offset;
13376 insn2 = 0x38630000; /* addi 3,3,0 */
13378 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13379 /* Zap the reloc on the _tls_get_addr call too. */
13380 BFD_ASSERT (offset == rel[1].r_offset);
13381 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13382 insn3 = bfd_get_32 (output_bfd,
13383 contents + offset + 4);
13385 || insn3 == CROR_151515 || insn3 == CROR_313131)
13387 rel->r_offset += 4;
13388 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13391 bfd_put_32 (output_bfd, insn2, contents + offset);
13392 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13400 case R_PPC64_TLSLD:
13401 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13403 unsigned int insn2, insn3;
13404 bfd_vma offset = rel->r_offset;
13407 sec = local_sections[toc_symndx];
13409 r_symndx < symtab_hdr->sh_info;
13411 if (local_sections[r_symndx] == sec)
13413 if (r_symndx >= symtab_hdr->sh_info)
13414 r_symndx = STN_UNDEF;
13415 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13416 if (r_symndx != STN_UNDEF)
13417 rel->r_addend -= (local_syms[r_symndx].st_value
13418 + sec->output_offset
13419 + sec->output_section->vma);
13421 r_type = R_PPC64_TPREL16_LO;
13422 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13423 rel->r_offset = offset + d_offset;
13424 /* Zap the reloc on the _tls_get_addr call too. */
13425 BFD_ASSERT (offset == rel[1].r_offset);
13426 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13427 insn2 = 0x38630000; /* addi 3,3,0 */
13428 insn3 = bfd_get_32 (output_bfd,
13429 contents + offset + 4);
13431 || insn3 == CROR_151515 || insn3 == CROR_313131)
13433 rel->r_offset += 4;
13434 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13437 bfd_put_32 (output_bfd, insn2, contents + offset);
13443 case R_PPC64_DTPMOD64:
13444 if (rel + 1 < relend
13445 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13446 && rel[1].r_offset == rel->r_offset + 8)
13448 if ((tls_mask & TLS_GD) == 0)
13450 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13451 if ((tls_mask & TLS_TPRELGD) != 0)
13452 r_type = R_PPC64_TPREL64;
13455 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13456 r_type = R_PPC64_NONE;
13458 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13463 if ((tls_mask & TLS_LD) == 0)
13465 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13466 r_type = R_PPC64_NONE;
13467 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13472 case R_PPC64_TPREL64:
13473 if ((tls_mask & TLS_TPREL) == 0)
13475 r_type = R_PPC64_NONE;
13476 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13480 case R_PPC64_REL16_HA:
13481 /* If we are generating a non-PIC executable, edit
13482 . 0: addis 2,12,.TOC.-0b@ha
13483 . addi 2,2,.TOC.-0b@l
13484 used by ELFv2 global entry points to set up r2, to
13487 if .TOC. is in range. */
13489 && h != NULL && &h->elf == htab->elf.hgot
13490 && rel + 1 < relend
13491 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13492 && rel[1].r_offset == rel->r_offset + 4
13493 && rel[1].r_addend == rel->r_addend + 4
13494 && relocation + 0x80008000 <= 0xffffffff)
13496 unsigned int insn1, insn2;
13497 bfd_vma offset = rel->r_offset - d_offset;
13498 insn1 = bfd_get_32 (output_bfd, contents + offset);
13499 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13500 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13501 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13503 r_type = R_PPC64_ADDR16_HA;
13504 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13505 rel->r_addend -= d_offset;
13506 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13507 rel[1].r_addend -= d_offset + 4;
13508 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13514 /* Handle other relocations that tweak non-addend part of insn. */
13516 max_br_offset = 1 << 25;
13517 addend = rel->r_addend;
13518 reloc_dest = DEST_NORMAL;
13524 case R_PPC64_TOCSAVE:
13525 if (relocation + addend == (rel->r_offset
13526 + input_section->output_offset
13527 + input_section->output_section->vma)
13528 && tocsave_find (htab, NO_INSERT,
13529 &local_syms, rel, input_bfd))
13531 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13533 || insn == CROR_151515 || insn == CROR_313131)
13534 bfd_put_32 (input_bfd,
13535 STD_R2_0R1 + STK_TOC (htab),
13536 contents + rel->r_offset);
13540 /* Branch taken prediction relocations. */
13541 case R_PPC64_ADDR14_BRTAKEN:
13542 case R_PPC64_REL14_BRTAKEN:
13543 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13546 /* Branch not taken prediction relocations. */
13547 case R_PPC64_ADDR14_BRNTAKEN:
13548 case R_PPC64_REL14_BRNTAKEN:
13549 insn |= bfd_get_32 (output_bfd,
13550 contents + rel->r_offset) & ~(0x01 << 21);
13553 case R_PPC64_REL14:
13554 max_br_offset = 1 << 15;
13557 case R_PPC64_REL24:
13558 /* Calls to functions with a different TOC, such as calls to
13559 shared objects, need to alter the TOC pointer. This is
13560 done using a linkage stub. A REL24 branching to these
13561 linkage stubs needs to be followed by a nop, as the nop
13562 will be replaced with an instruction to restore the TOC
13567 && h->oh->is_func_descriptor)
13568 fdh = ppc_follow_link (h->oh);
13569 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13571 if (stub_entry != NULL
13572 && (stub_entry->stub_type == ppc_stub_plt_call
13573 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13574 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13575 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13577 bfd_boolean can_plt_call = FALSE;
13579 /* All of these stubs will modify r2, so there must be a
13580 branch and link followed by a nop. The nop is
13581 replaced by an insn to restore r2. */
13582 if (rel->r_offset + 8 <= input_section->size)
13586 br = bfd_get_32 (input_bfd,
13587 contents + rel->r_offset);
13592 nop = bfd_get_32 (input_bfd,
13593 contents + rel->r_offset + 4);
13595 || nop == CROR_151515 || nop == CROR_313131)
13598 && (h == htab->tls_get_addr_fd
13599 || h == htab->tls_get_addr)
13600 && !htab->no_tls_get_addr_opt)
13602 /* Special stub used, leave nop alone. */
13605 bfd_put_32 (input_bfd,
13606 LD_R2_0R1 + STK_TOC (htab),
13607 contents + rel->r_offset + 4);
13608 can_plt_call = TRUE;
13613 if (!can_plt_call && h != NULL)
13615 const char *name = h->elf.root.root.string;
13620 if (strncmp (name, "__libc_start_main", 17) == 0
13621 && (name[17] == 0 || name[17] == '@'))
13623 /* Allow crt1 branch to go via a toc adjusting
13624 stub. Other calls that never return could do
13625 the same, if we could detect such. */
13626 can_plt_call = TRUE;
13632 /* g++ as of 20130507 emits self-calls without a
13633 following nop. This is arguably wrong since we
13634 have conflicting information. On the one hand a
13635 global symbol and on the other a local call
13636 sequence, but don't error for this special case.
13637 It isn't possible to cheaply verify we have
13638 exactly such a call. Allow all calls to the same
13640 asection *code_sec = sec;
13642 if (get_opd_info (sec) != NULL)
13644 bfd_vma off = (relocation + addend
13645 - sec->output_section->vma
13646 - sec->output_offset);
13648 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13650 if (code_sec == input_section)
13651 can_plt_call = TRUE;
13656 info->callbacks->einfo
13657 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13658 "recompile with -fPIC\n"),
13659 input_bfd, input_section, rel->r_offset, sym_name);
13661 bfd_set_error (bfd_error_bad_value);
13666 && (stub_entry->stub_type == ppc_stub_plt_call
13667 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13668 unresolved_reloc = FALSE;
13671 if ((stub_entry == NULL
13672 || stub_entry->stub_type == ppc_stub_long_branch
13673 || stub_entry->stub_type == ppc_stub_plt_branch)
13674 && get_opd_info (sec) != NULL)
13676 /* The branch destination is the value of the opd entry. */
13677 bfd_vma off = (relocation + addend
13678 - sec->output_section->vma
13679 - sec->output_offset);
13680 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13681 if (dest != (bfd_vma) -1)
13685 reloc_dest = DEST_OPD;
13689 /* If the branch is out of reach we ought to have a long
13691 from = (rel->r_offset
13692 + input_section->output_offset
13693 + input_section->output_section->vma);
13695 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13699 if (stub_entry != NULL
13700 && (stub_entry->stub_type == ppc_stub_long_branch
13701 || stub_entry->stub_type == ppc_stub_plt_branch)
13702 && (r_type == R_PPC64_ADDR14_BRTAKEN
13703 || r_type == R_PPC64_ADDR14_BRNTAKEN
13704 || (relocation + addend - from + max_br_offset
13705 < 2 * max_br_offset)))
13706 /* Don't use the stub if this branch is in range. */
13709 if (stub_entry != NULL)
13711 /* Munge up the value and addend so that we call the stub
13712 rather than the procedure directly. */
13713 relocation = (stub_entry->stub_offset
13714 + stub_entry->stub_sec->output_offset
13715 + stub_entry->stub_sec->output_section->vma);
13717 reloc_dest = DEST_STUB;
13719 if ((stub_entry->stub_type == ppc_stub_plt_call
13720 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13721 && (ALWAYS_EMIT_R2SAVE
13722 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13723 && rel + 1 < relend
13724 && rel[1].r_offset == rel->r_offset + 4
13725 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13733 /* Set 'a' bit. This is 0b00010 in BO field for branch
13734 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13735 for branch on CTR insns (BO == 1a00t or 1a01t). */
13736 if ((insn & (0x14 << 21)) == (0x04 << 21))
13737 insn |= 0x02 << 21;
13738 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13739 insn |= 0x08 << 21;
13745 /* Invert 'y' bit if not the default. */
13746 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13747 insn ^= 0x01 << 21;
13750 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13753 /* NOP out calls to undefined weak functions.
13754 We can thus call a weak function without first
13755 checking whether the function is defined. */
13757 && h->elf.root.type == bfd_link_hash_undefweak
13758 && h->elf.dynindx == -1
13759 && r_type == R_PPC64_REL24
13763 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13769 /* Set `addend'. */
13774 info->callbacks->einfo
13775 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13776 input_bfd, (int) r_type, sym_name);
13778 bfd_set_error (bfd_error_bad_value);
13784 case R_PPC64_TLSGD:
13785 case R_PPC64_TLSLD:
13786 case R_PPC64_TOCSAVE:
13787 case R_PPC64_GNU_VTINHERIT:
13788 case R_PPC64_GNU_VTENTRY:
13791 /* GOT16 relocations. Like an ADDR16 using the symbol's
13792 address in the GOT as relocation value instead of the
13793 symbol's value itself. Also, create a GOT entry for the
13794 symbol and put the symbol value there. */
13795 case R_PPC64_GOT_TLSGD16:
13796 case R_PPC64_GOT_TLSGD16_LO:
13797 case R_PPC64_GOT_TLSGD16_HI:
13798 case R_PPC64_GOT_TLSGD16_HA:
13799 tls_type = TLS_TLS | TLS_GD;
13802 case R_PPC64_GOT_TLSLD16:
13803 case R_PPC64_GOT_TLSLD16_LO:
13804 case R_PPC64_GOT_TLSLD16_HI:
13805 case R_PPC64_GOT_TLSLD16_HA:
13806 tls_type = TLS_TLS | TLS_LD;
13809 case R_PPC64_GOT_TPREL16_DS:
13810 case R_PPC64_GOT_TPREL16_LO_DS:
13811 case R_PPC64_GOT_TPREL16_HI:
13812 case R_PPC64_GOT_TPREL16_HA:
13813 tls_type = TLS_TLS | TLS_TPREL;
13816 case R_PPC64_GOT_DTPREL16_DS:
13817 case R_PPC64_GOT_DTPREL16_LO_DS:
13818 case R_PPC64_GOT_DTPREL16_HI:
13819 case R_PPC64_GOT_DTPREL16_HA:
13820 tls_type = TLS_TLS | TLS_DTPREL;
13823 case R_PPC64_GOT16:
13824 case R_PPC64_GOT16_LO:
13825 case R_PPC64_GOT16_HI:
13826 case R_PPC64_GOT16_HA:
13827 case R_PPC64_GOT16_DS:
13828 case R_PPC64_GOT16_LO_DS:
13831 /* Relocation is to the entry for this symbol in the global
13836 unsigned long indx = 0;
13837 struct got_entry *ent;
13839 if (tls_type == (TLS_TLS | TLS_LD)
13841 || !h->elf.def_dynamic))
13842 ent = ppc64_tlsld_got (input_bfd);
13848 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13849 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13852 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
13853 /* This is actually a static link, or it is a
13854 -Bsymbolic link and the symbol is defined
13855 locally, or the symbol was forced to be local
13856 because of a version file. */
13860 BFD_ASSERT (h->elf.dynindx != -1);
13861 indx = h->elf.dynindx;
13862 unresolved_reloc = FALSE;
13864 ent = h->elf.got.glist;
13868 if (local_got_ents == NULL)
13870 ent = local_got_ents[r_symndx];
13873 for (; ent != NULL; ent = ent->next)
13874 if (ent->addend == orig_rel.r_addend
13875 && ent->owner == input_bfd
13876 && ent->tls_type == tls_type)
13882 if (ent->is_indirect)
13883 ent = ent->got.ent;
13884 offp = &ent->got.offset;
13885 got = ppc64_elf_tdata (ent->owner)->got;
13889 /* The offset must always be a multiple of 8. We use the
13890 least significant bit to record whether we have already
13891 processed this entry. */
13893 if ((off & 1) != 0)
13897 /* Generate relocs for the dynamic linker, except in
13898 the case of TLSLD where we'll use one entry per
13906 ? h->elf.type == STT_GNU_IFUNC
13907 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13909 relgot = htab->elf.irelplt;
13910 else if ((info->shared || indx != 0)
13912 || (tls_type == (TLS_TLS | TLS_LD)
13913 && !h->elf.def_dynamic)
13914 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13915 || h->elf.root.type != bfd_link_hash_undefweak))
13916 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13917 if (relgot != NULL)
13919 outrel.r_offset = (got->output_section->vma
13920 + got->output_offset
13922 outrel.r_addend = addend;
13923 if (tls_type & (TLS_LD | TLS_GD))
13925 outrel.r_addend = 0;
13926 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13927 if (tls_type == (TLS_TLS | TLS_GD))
13929 loc = relgot->contents;
13930 loc += (relgot->reloc_count++
13931 * sizeof (Elf64_External_Rela));
13932 bfd_elf64_swap_reloca_out (output_bfd,
13934 outrel.r_offset += 8;
13935 outrel.r_addend = addend;
13937 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13940 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13941 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13942 else if (tls_type == (TLS_TLS | TLS_TPREL))
13943 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13944 else if (indx != 0)
13945 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13949 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13951 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13953 /* Write the .got section contents for the sake
13955 loc = got->contents + off;
13956 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13960 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13962 outrel.r_addend += relocation;
13963 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13964 outrel.r_addend -= htab->elf.tls_sec->vma;
13966 loc = relgot->contents;
13967 loc += (relgot->reloc_count++
13968 * sizeof (Elf64_External_Rela));
13969 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13972 /* Init the .got section contents here if we're not
13973 emitting a reloc. */
13976 relocation += addend;
13977 if (tls_type == (TLS_TLS | TLS_LD))
13979 else if (tls_type != 0)
13981 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13982 if (tls_type == (TLS_TLS | TLS_TPREL))
13983 relocation += DTP_OFFSET - TP_OFFSET;
13985 if (tls_type == (TLS_TLS | TLS_GD))
13987 bfd_put_64 (output_bfd, relocation,
13988 got->contents + off + 8);
13993 bfd_put_64 (output_bfd, relocation,
13994 got->contents + off);
13998 if (off >= (bfd_vma) -2)
14001 relocation = got->output_section->vma + got->output_offset + off;
14002 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14006 case R_PPC64_PLT16_HA:
14007 case R_PPC64_PLT16_HI:
14008 case R_PPC64_PLT16_LO:
14009 case R_PPC64_PLT32:
14010 case R_PPC64_PLT64:
14011 /* Relocation is to the entry for this symbol in the
14012 procedure linkage table. */
14014 /* Resolve a PLT reloc against a local symbol directly,
14015 without using the procedure linkage table. */
14019 /* It's possible that we didn't make a PLT entry for this
14020 symbol. This happens when statically linking PIC code,
14021 or when using -Bsymbolic. Go find a match if there is a
14023 if (htab->elf.splt != NULL)
14025 struct plt_entry *ent;
14026 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14027 if (ent->plt.offset != (bfd_vma) -1
14028 && ent->addend == orig_rel.r_addend)
14030 relocation = (htab->elf.splt->output_section->vma
14031 + htab->elf.splt->output_offset
14032 + ent->plt.offset);
14033 unresolved_reloc = FALSE;
14040 /* Relocation value is TOC base. */
14041 relocation = TOCstart;
14042 if (r_symndx == STN_UNDEF)
14043 relocation += htab->stub_group[input_section->id].toc_off;
14044 else if (unresolved_reloc)
14046 else if (sec != NULL && sec->id <= htab->top_id)
14047 relocation += htab->stub_group[sec->id].toc_off;
14049 unresolved_reloc = TRUE;
14052 /* TOC16 relocs. We want the offset relative to the TOC base,
14053 which is the address of the start of the TOC plus 0x8000.
14054 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14056 case R_PPC64_TOC16:
14057 case R_PPC64_TOC16_LO:
14058 case R_PPC64_TOC16_HI:
14059 case R_PPC64_TOC16_DS:
14060 case R_PPC64_TOC16_LO_DS:
14061 case R_PPC64_TOC16_HA:
14062 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14065 /* Relocate against the beginning of the section. */
14066 case R_PPC64_SECTOFF:
14067 case R_PPC64_SECTOFF_LO:
14068 case R_PPC64_SECTOFF_HI:
14069 case R_PPC64_SECTOFF_DS:
14070 case R_PPC64_SECTOFF_LO_DS:
14071 case R_PPC64_SECTOFF_HA:
14073 addend -= sec->output_section->vma;
14076 case R_PPC64_REL16:
14077 case R_PPC64_REL16_LO:
14078 case R_PPC64_REL16_HI:
14079 case R_PPC64_REL16_HA:
14082 case R_PPC64_REL14:
14083 case R_PPC64_REL14_BRNTAKEN:
14084 case R_PPC64_REL14_BRTAKEN:
14085 case R_PPC64_REL24:
14088 case R_PPC64_TPREL16:
14089 case R_PPC64_TPREL16_LO:
14090 case R_PPC64_TPREL16_HI:
14091 case R_PPC64_TPREL16_HA:
14092 case R_PPC64_TPREL16_DS:
14093 case R_PPC64_TPREL16_LO_DS:
14094 case R_PPC64_TPREL16_HIGH:
14095 case R_PPC64_TPREL16_HIGHA:
14096 case R_PPC64_TPREL16_HIGHER:
14097 case R_PPC64_TPREL16_HIGHERA:
14098 case R_PPC64_TPREL16_HIGHEST:
14099 case R_PPC64_TPREL16_HIGHESTA:
14101 && h->elf.root.type == bfd_link_hash_undefweak
14102 && h->elf.dynindx == -1)
14104 /* Make this relocation against an undefined weak symbol
14105 resolve to zero. This is really just a tweak, since
14106 code using weak externs ought to check that they are
14107 defined before using them. */
14108 bfd_byte *p = contents + rel->r_offset - d_offset;
14110 insn = bfd_get_32 (output_bfd, p);
14111 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14113 bfd_put_32 (output_bfd, insn, p);
14116 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14118 /* The TPREL16 relocs shouldn't really be used in shared
14119 libs as they will result in DT_TEXTREL being set, but
14120 support them anyway. */
14124 case R_PPC64_DTPREL16:
14125 case R_PPC64_DTPREL16_LO:
14126 case R_PPC64_DTPREL16_HI:
14127 case R_PPC64_DTPREL16_HA:
14128 case R_PPC64_DTPREL16_DS:
14129 case R_PPC64_DTPREL16_LO_DS:
14130 case R_PPC64_DTPREL16_HIGH:
14131 case R_PPC64_DTPREL16_HIGHA:
14132 case R_PPC64_DTPREL16_HIGHER:
14133 case R_PPC64_DTPREL16_HIGHERA:
14134 case R_PPC64_DTPREL16_HIGHEST:
14135 case R_PPC64_DTPREL16_HIGHESTA:
14136 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14139 case R_PPC64_DTPMOD64:
14144 case R_PPC64_TPREL64:
14145 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14148 case R_PPC64_DTPREL64:
14149 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14152 /* Relocations that may need to be propagated if this is a
14154 case R_PPC64_REL30:
14155 case R_PPC64_REL32:
14156 case R_PPC64_REL64:
14157 case R_PPC64_ADDR14:
14158 case R_PPC64_ADDR14_BRNTAKEN:
14159 case R_PPC64_ADDR14_BRTAKEN:
14160 case R_PPC64_ADDR16:
14161 case R_PPC64_ADDR16_DS:
14162 case R_PPC64_ADDR16_HA:
14163 case R_PPC64_ADDR16_HI:
14164 case R_PPC64_ADDR16_HIGH:
14165 case R_PPC64_ADDR16_HIGHA:
14166 case R_PPC64_ADDR16_HIGHER:
14167 case R_PPC64_ADDR16_HIGHERA:
14168 case R_PPC64_ADDR16_HIGHEST:
14169 case R_PPC64_ADDR16_HIGHESTA:
14170 case R_PPC64_ADDR16_LO:
14171 case R_PPC64_ADDR16_LO_DS:
14172 case R_PPC64_ADDR24:
14173 case R_PPC64_ADDR32:
14174 case R_PPC64_ADDR64:
14175 case R_PPC64_UADDR16:
14176 case R_PPC64_UADDR32:
14177 case R_PPC64_UADDR64:
14179 if ((input_section->flags & SEC_ALLOC) == 0)
14182 if (NO_OPD_RELOCS && is_opd)
14187 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14188 || h->elf.root.type != bfd_link_hash_undefweak)
14189 && (must_be_dyn_reloc (info, r_type)
14190 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14191 || (ELIMINATE_COPY_RELOCS
14194 && h->elf.dynindx != -1
14195 && !h->elf.non_got_ref
14196 && !h->elf.def_regular)
14199 ? h->elf.type == STT_GNU_IFUNC
14200 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14202 bfd_boolean skip, relocate;
14206 /* When generating a dynamic object, these relocations
14207 are copied into the output file to be resolved at run
14213 out_off = _bfd_elf_section_offset (output_bfd, info,
14214 input_section, rel->r_offset);
14215 if (out_off == (bfd_vma) -1)
14217 else if (out_off == (bfd_vma) -2)
14218 skip = TRUE, relocate = TRUE;
14219 out_off += (input_section->output_section->vma
14220 + input_section->output_offset);
14221 outrel.r_offset = out_off;
14222 outrel.r_addend = rel->r_addend;
14224 /* Optimize unaligned reloc use. */
14225 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14226 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14227 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14228 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14229 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14230 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14231 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14232 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14233 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14236 memset (&outrel, 0, sizeof outrel);
14237 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
14239 && r_type != R_PPC64_TOC)
14241 BFD_ASSERT (h->elf.dynindx != -1);
14242 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14246 /* This symbol is local, or marked to become local,
14247 or this is an opd section reloc which must point
14248 at a local function. */
14249 outrel.r_addend += relocation;
14250 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14252 if (is_opd && h != NULL)
14254 /* Lie about opd entries. This case occurs
14255 when building shared libraries and we
14256 reference a function in another shared
14257 lib. The same thing happens for a weak
14258 definition in an application that's
14259 overridden by a strong definition in a
14260 shared lib. (I believe this is a generic
14261 bug in binutils handling of weak syms.)
14262 In these cases we won't use the opd
14263 entry in this lib. */
14264 unresolved_reloc = FALSE;
14267 && r_type == R_PPC64_ADDR64
14269 ? h->elf.type == STT_GNU_IFUNC
14270 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14271 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14274 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14276 /* We need to relocate .opd contents for ld.so.
14277 Prelink also wants simple and consistent rules
14278 for relocs. This make all RELATIVE relocs have
14279 *r_offset equal to r_addend. */
14288 ? h->elf.type == STT_GNU_IFUNC
14289 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14291 info->callbacks->einfo
14292 (_("%P: %H: %s for indirect "
14293 "function `%T' unsupported\n"),
14294 input_bfd, input_section, rel->r_offset,
14295 ppc64_elf_howto_table[r_type]->name,
14299 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14301 else if (sec == NULL || sec->owner == NULL)
14303 bfd_set_error (bfd_error_bad_value);
14310 osec = sec->output_section;
14311 indx = elf_section_data (osec)->dynindx;
14315 if ((osec->flags & SEC_READONLY) == 0
14316 && htab->elf.data_index_section != NULL)
14317 osec = htab->elf.data_index_section;
14319 osec = htab->elf.text_index_section;
14320 indx = elf_section_data (osec)->dynindx;
14322 BFD_ASSERT (indx != 0);
14324 /* We are turning this relocation into one
14325 against a section symbol, so subtract out
14326 the output section's address but not the
14327 offset of the input section in the output
14329 outrel.r_addend -= osec->vma;
14332 outrel.r_info = ELF64_R_INFO (indx, r_type);
14336 sreloc = elf_section_data (input_section)->sreloc;
14338 ? h->elf.type == STT_GNU_IFUNC
14339 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14340 sreloc = htab->elf.irelplt;
14341 if (sreloc == NULL)
14344 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14347 loc = sreloc->contents;
14348 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14349 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14351 /* If this reloc is against an external symbol, it will
14352 be computed at runtime, so there's no need to do
14353 anything now. However, for the sake of prelink ensure
14354 that the section contents are a known value. */
14357 unresolved_reloc = FALSE;
14358 /* The value chosen here is quite arbitrary as ld.so
14359 ignores section contents except for the special
14360 case of .opd where the contents might be accessed
14361 before relocation. Choose zero, as that won't
14362 cause reloc overflow. */
14365 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14366 to improve backward compatibility with older
14368 if (r_type == R_PPC64_ADDR64)
14369 addend = outrel.r_addend;
14370 /* Adjust pc_relative relocs to have zero in *r_offset. */
14371 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14372 addend = (input_section->output_section->vma
14373 + input_section->output_offset
14380 case R_PPC64_GLOB_DAT:
14381 case R_PPC64_JMP_SLOT:
14382 case R_PPC64_JMP_IREL:
14383 case R_PPC64_RELATIVE:
14384 /* We shouldn't ever see these dynamic relocs in relocatable
14386 /* Fall through. */
14388 case R_PPC64_PLTGOT16:
14389 case R_PPC64_PLTGOT16_DS:
14390 case R_PPC64_PLTGOT16_HA:
14391 case R_PPC64_PLTGOT16_HI:
14392 case R_PPC64_PLTGOT16_LO:
14393 case R_PPC64_PLTGOT16_LO_DS:
14394 case R_PPC64_PLTREL32:
14395 case R_PPC64_PLTREL64:
14396 /* These ones haven't been implemented yet. */
14398 info->callbacks->einfo
14399 (_("%P: %B: %s is not supported for `%T'\n"),
14401 ppc64_elf_howto_table[r_type]->name, sym_name);
14403 bfd_set_error (bfd_error_invalid_operation);
14408 /* Multi-instruction sequences that access the TOC can be
14409 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14410 to nop; addi rb,r2,x; */
14416 case R_PPC64_GOT_TLSLD16_HI:
14417 case R_PPC64_GOT_TLSGD16_HI:
14418 case R_PPC64_GOT_TPREL16_HI:
14419 case R_PPC64_GOT_DTPREL16_HI:
14420 case R_PPC64_GOT16_HI:
14421 case R_PPC64_TOC16_HI:
14422 /* These relocs would only be useful if building up an
14423 offset to later add to r2, perhaps in an indexed
14424 addressing mode instruction. Don't try to optimize.
14425 Unfortunately, the possibility of someone building up an
14426 offset like this or even with the HA relocs, means that
14427 we need to check the high insn when optimizing the low
14431 case R_PPC64_GOT_TLSLD16_HA:
14432 case R_PPC64_GOT_TLSGD16_HA:
14433 case R_PPC64_GOT_TPREL16_HA:
14434 case R_PPC64_GOT_DTPREL16_HA:
14435 case R_PPC64_GOT16_HA:
14436 case R_PPC64_TOC16_HA:
14437 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14438 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14440 bfd_byte *p = contents + (rel->r_offset & ~3);
14441 bfd_put_32 (input_bfd, NOP, p);
14445 case R_PPC64_GOT_TLSLD16_LO:
14446 case R_PPC64_GOT_TLSGD16_LO:
14447 case R_PPC64_GOT_TPREL16_LO_DS:
14448 case R_PPC64_GOT_DTPREL16_LO_DS:
14449 case R_PPC64_GOT16_LO:
14450 case R_PPC64_GOT16_LO_DS:
14451 case R_PPC64_TOC16_LO:
14452 case R_PPC64_TOC16_LO_DS:
14453 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14454 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14456 bfd_byte *p = contents + (rel->r_offset & ~3);
14457 insn = bfd_get_32 (input_bfd, p);
14458 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14460 /* Transform addic to addi when we change reg. */
14461 insn &= ~((0x3f << 26) | (0x1f << 16));
14462 insn |= (14u << 26) | (2 << 16);
14466 insn &= ~(0x1f << 16);
14469 bfd_put_32 (input_bfd, insn, p);
14474 /* Do any further special processing. */
14480 case R_PPC64_REL16_HA:
14481 case R_PPC64_ADDR16_HA:
14482 case R_PPC64_ADDR16_HIGHA:
14483 case R_PPC64_ADDR16_HIGHERA:
14484 case R_PPC64_ADDR16_HIGHESTA:
14485 case R_PPC64_TOC16_HA:
14486 case R_PPC64_SECTOFF_HA:
14487 case R_PPC64_TPREL16_HA:
14488 case R_PPC64_TPREL16_HIGHA:
14489 case R_PPC64_TPREL16_HIGHERA:
14490 case R_PPC64_TPREL16_HIGHESTA:
14491 case R_PPC64_DTPREL16_HA:
14492 case R_PPC64_DTPREL16_HIGHA:
14493 case R_PPC64_DTPREL16_HIGHERA:
14494 case R_PPC64_DTPREL16_HIGHESTA:
14495 /* It's just possible that this symbol is a weak symbol
14496 that's not actually defined anywhere. In that case,
14497 'sec' would be NULL, and we should leave the symbol
14498 alone (it will be set to zero elsewhere in the link). */
14503 case R_PPC64_GOT16_HA:
14504 case R_PPC64_PLTGOT16_HA:
14505 case R_PPC64_PLT16_HA:
14506 case R_PPC64_GOT_TLSGD16_HA:
14507 case R_PPC64_GOT_TLSLD16_HA:
14508 case R_PPC64_GOT_TPREL16_HA:
14509 case R_PPC64_GOT_DTPREL16_HA:
14510 /* Add 0x10000 if sign bit in 0:15 is set.
14511 Bits 0:15 are not used. */
14515 case R_PPC64_ADDR16_DS:
14516 case R_PPC64_ADDR16_LO_DS:
14517 case R_PPC64_GOT16_DS:
14518 case R_PPC64_GOT16_LO_DS:
14519 case R_PPC64_PLT16_LO_DS:
14520 case R_PPC64_SECTOFF_DS:
14521 case R_PPC64_SECTOFF_LO_DS:
14522 case R_PPC64_TOC16_DS:
14523 case R_PPC64_TOC16_LO_DS:
14524 case R_PPC64_PLTGOT16_DS:
14525 case R_PPC64_PLTGOT16_LO_DS:
14526 case R_PPC64_GOT_TPREL16_DS:
14527 case R_PPC64_GOT_TPREL16_LO_DS:
14528 case R_PPC64_GOT_DTPREL16_DS:
14529 case R_PPC64_GOT_DTPREL16_LO_DS:
14530 case R_PPC64_TPREL16_DS:
14531 case R_PPC64_TPREL16_LO_DS:
14532 case R_PPC64_DTPREL16_DS:
14533 case R_PPC64_DTPREL16_LO_DS:
14534 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14536 /* If this reloc is against an lq insn, then the value must be
14537 a multiple of 16. This is somewhat of a hack, but the
14538 "correct" way to do this by defining _DQ forms of all the
14539 _DS relocs bloats all reloc switches in this file. It
14540 doesn't seem to make much sense to use any of these relocs
14541 in data, so testing the insn should be safe. */
14542 if ((insn & (0x3f << 26)) == (56u << 26))
14544 if (((relocation + addend) & mask) != 0)
14546 info->callbacks->einfo
14547 (_("%P: %H: error: %s not a multiple of %u\n"),
14548 input_bfd, input_section, rel->r_offset,
14549 ppc64_elf_howto_table[r_type]->name,
14551 bfd_set_error (bfd_error_bad_value);
14558 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14559 because such sections are not SEC_ALLOC and thus ld.so will
14560 not process them. */
14561 if (unresolved_reloc
14562 && !((input_section->flags & SEC_DEBUGGING) != 0
14563 && h->elf.def_dynamic)
14564 && _bfd_elf_section_offset (output_bfd, info, input_section,
14565 rel->r_offset) != (bfd_vma) -1)
14567 info->callbacks->einfo
14568 (_("%P: %H: unresolvable %s against `%T'\n"),
14569 input_bfd, input_section, rel->r_offset,
14570 ppc64_elf_howto_table[(int) r_type]->name,
14571 h->elf.root.root.string);
14575 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
14583 if (r != bfd_reloc_ok)
14585 char *more_info = NULL;
14586 const char *reloc_name = ppc64_elf_howto_table[r_type]->name;
14588 if (reloc_dest != DEST_NORMAL)
14590 more_info = bfd_malloc (strlen (reloc_name) + 8);
14591 if (more_info != NULL)
14593 strcpy (more_info, reloc_name);
14594 strcat (more_info, (reloc_dest == DEST_OPD
14595 ? " (OPD)" : " (stub)"));
14596 reloc_name = more_info;
14600 if (r == bfd_reloc_overflow)
14605 && h->elf.root.type == bfd_link_hash_undefweak
14606 && ppc64_elf_howto_table[r_type]->pc_relative)
14608 /* Assume this is a call protected by other code that
14609 detects the symbol is undefined. If this is the case,
14610 we can safely ignore the overflow. If not, the
14611 program is hosed anyway, and a little warning isn't
14617 if (!((*info->callbacks->reloc_overflow)
14618 (info, &h->elf.root, sym_name,
14619 reloc_name, orig_rel.r_addend,
14620 input_bfd, input_section, rel->r_offset)))
14625 info->callbacks->einfo
14626 (_("%P: %H: %s against `%T': error %d\n"),
14627 input_bfd, input_section, rel->r_offset,
14628 reloc_name, sym_name, (int) r);
14631 if (more_info != NULL)
14636 /* If we're emitting relocations, then shortly after this function
14637 returns, reloc offsets and addends for this section will be
14638 adjusted. Worse, reloc symbol indices will be for the output
14639 file rather than the input. Save a copy of the relocs for
14640 opd_entry_value. */
14641 if (is_opd && (info->emitrelocations || info->relocatable))
14644 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14645 rel = bfd_alloc (input_bfd, amt);
14646 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14647 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14650 memcpy (rel, relocs, amt);
14655 /* Adjust the value of any local symbols in opd sections. */
14658 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14659 const char *name ATTRIBUTE_UNUSED,
14660 Elf_Internal_Sym *elfsym,
14661 asection *input_sec,
14662 struct elf_link_hash_entry *h)
14664 struct _opd_sec_data *opd;
14671 opd = get_opd_info (input_sec);
14672 if (opd == NULL || opd->adjust == NULL)
14675 value = elfsym->st_value - input_sec->output_offset;
14676 if (!info->relocatable)
14677 value -= input_sec->output_section->vma;
14679 adjust = opd->adjust[value / 8];
14683 elfsym->st_value += adjust;
14687 /* Finish up dynamic symbol handling. We set the contents of various
14688 dynamic sections here. */
14691 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14692 struct bfd_link_info *info,
14693 struct elf_link_hash_entry *h,
14694 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14696 struct ppc_link_hash_table *htab;
14697 struct plt_entry *ent;
14698 Elf_Internal_Rela rela;
14701 htab = ppc_hash_table (info);
14705 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14706 if (ent->plt.offset != (bfd_vma) -1)
14708 /* This symbol has an entry in the procedure linkage
14709 table. Set it up. */
14710 if (!htab->elf.dynamic_sections_created
14711 || h->dynindx == -1)
14713 BFD_ASSERT (h->type == STT_GNU_IFUNC
14715 && (h->root.type == bfd_link_hash_defined
14716 || h->root.type == bfd_link_hash_defweak));
14717 rela.r_offset = (htab->elf.iplt->output_section->vma
14718 + htab->elf.iplt->output_offset
14719 + ent->plt.offset);
14721 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14723 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14724 rela.r_addend = (h->root.u.def.value
14725 + h->root.u.def.section->output_offset
14726 + h->root.u.def.section->output_section->vma
14728 loc = (htab->elf.irelplt->contents
14729 + (htab->elf.irelplt->reloc_count++
14730 * sizeof (Elf64_External_Rela)));
14734 rela.r_offset = (htab->elf.splt->output_section->vma
14735 + htab->elf.splt->output_offset
14736 + ent->plt.offset);
14737 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14738 rela.r_addend = ent->addend;
14739 loc = (htab->elf.srelplt->contents
14740 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14741 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14743 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14745 if (!htab->opd_abi)
14747 if (!h->def_regular)
14749 /* Mark the symbol as undefined, rather than as
14750 defined in glink. Leave the value if there were
14751 any relocations where pointer equality matters
14752 (this is a clue for the dynamic linker, to make
14753 function pointer comparisons work between an
14754 application and shared library), otherwise set it
14756 sym->st_shndx = SHN_UNDEF;
14757 if (!h->pointer_equality_needed)
14759 else if (!h->ref_regular_nonweak)
14761 /* This breaks function pointer comparisons, but
14762 that is better than breaking tests for a NULL
14763 function pointer. */
14772 /* This symbol needs a copy reloc. Set it up. */
14774 if (h->dynindx == -1
14775 || (h->root.type != bfd_link_hash_defined
14776 && h->root.type != bfd_link_hash_defweak)
14777 || htab->relbss == NULL)
14780 rela.r_offset = (h->root.u.def.value
14781 + h->root.u.def.section->output_section->vma
14782 + h->root.u.def.section->output_offset);
14783 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14785 loc = htab->relbss->contents;
14786 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14787 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14793 /* Used to decide how to sort relocs in an optimal manner for the
14794 dynamic linker, before writing them out. */
14796 static enum elf_reloc_type_class
14797 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14798 const asection *rel_sec,
14799 const Elf_Internal_Rela *rela)
14801 enum elf_ppc64_reloc_type r_type;
14802 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14804 if (rel_sec == htab->elf.irelplt)
14805 return reloc_class_ifunc;
14807 r_type = ELF64_R_TYPE (rela->r_info);
14810 case R_PPC64_RELATIVE:
14811 return reloc_class_relative;
14812 case R_PPC64_JMP_SLOT:
14813 return reloc_class_plt;
14815 return reloc_class_copy;
14817 return reloc_class_normal;
14821 /* Finish up the dynamic sections. */
14824 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14825 struct bfd_link_info *info)
14827 struct ppc_link_hash_table *htab;
14831 htab = ppc_hash_table (info);
14835 dynobj = htab->elf.dynobj;
14836 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14838 if (htab->elf.dynamic_sections_created)
14840 Elf64_External_Dyn *dyncon, *dynconend;
14842 if (sdyn == NULL || htab->elf.sgot == NULL)
14845 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14846 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14847 for (; dyncon < dynconend; dyncon++)
14849 Elf_Internal_Dyn dyn;
14852 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14859 case DT_PPC64_GLINK:
14861 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14862 /* We stupidly defined DT_PPC64_GLINK to be the start
14863 of glink rather than the first entry point, which is
14864 what ld.so needs, and now have a bigger stub to
14865 support automatic multiple TOCs. */
14866 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
14870 s = bfd_get_section_by_name (output_bfd, ".opd");
14873 dyn.d_un.d_ptr = s->vma;
14877 if (htab->do_multi_toc && htab->multi_toc_needed)
14878 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
14881 case DT_PPC64_OPDSZ:
14882 s = bfd_get_section_by_name (output_bfd, ".opd");
14885 dyn.d_un.d_val = s->size;
14889 s = htab->elf.splt;
14890 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14894 s = htab->elf.srelplt;
14895 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14899 dyn.d_un.d_val = htab->elf.srelplt->size;
14903 /* Don't count procedure linkage table relocs in the
14904 overall reloc count. */
14905 s = htab->elf.srelplt;
14908 dyn.d_un.d_val -= s->size;
14912 /* We may not be using the standard ELF linker script.
14913 If .rela.plt is the first .rela section, we adjust
14914 DT_RELA to not include it. */
14915 s = htab->elf.srelplt;
14918 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14920 dyn.d_un.d_ptr += s->size;
14924 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14928 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
14930 /* Fill in the first entry in the global offset table.
14931 We use it to hold the link-time TOCbase. */
14932 bfd_put_64 (output_bfd,
14933 elf_gp (output_bfd) + TOC_BASE_OFF,
14934 htab->elf.sgot->contents);
14936 /* Set .got entry size. */
14937 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
14940 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
14942 /* Set .plt entry size. */
14943 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
14944 = PLT_ENTRY_SIZE (htab);
14947 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14948 brlt ourselves if emitrelocations. */
14949 if (htab->brlt != NULL
14950 && htab->brlt->reloc_count != 0
14951 && !_bfd_elf_link_output_relocs (output_bfd,
14953 elf_section_data (htab->brlt)->rela.hdr,
14954 elf_section_data (htab->brlt)->relocs,
14958 if (htab->glink != NULL
14959 && htab->glink->reloc_count != 0
14960 && !_bfd_elf_link_output_relocs (output_bfd,
14962 elf_section_data (htab->glink)->rela.hdr,
14963 elf_section_data (htab->glink)->relocs,
14968 if (htab->glink_eh_frame != NULL
14969 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
14970 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14971 htab->glink_eh_frame,
14972 htab->glink_eh_frame->contents))
14975 /* We need to handle writing out multiple GOT sections ourselves,
14976 since we didn't add them to DYNOBJ. We know dynobj is the first
14978 while ((dynobj = dynobj->link_next) != NULL)
14982 if (!is_ppc64_elf (dynobj))
14985 s = ppc64_elf_tdata (dynobj)->got;
14988 && s->output_section != bfd_abs_section_ptr
14989 && !bfd_set_section_contents (output_bfd, s->output_section,
14990 s->contents, s->output_offset,
14993 s = ppc64_elf_tdata (dynobj)->relgot;
14996 && s->output_section != bfd_abs_section_ptr
14997 && !bfd_set_section_contents (output_bfd, s->output_section,
14998 s->contents, s->output_offset,
15006 #include "elf64-target.h"
15008 /* FreeBSD support */
15010 #undef TARGET_LITTLE_SYM
15011 #undef TARGET_LITTLE_NAME
15013 #undef TARGET_BIG_SYM
15014 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
15015 #undef TARGET_BIG_NAME
15016 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15019 #define ELF_OSABI ELFOSABI_FREEBSD
15022 #define elf64_bed elf64_powerpc_fbsd_bed
15024 #include "elf64-target.h"