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_post_process_headers _bfd_elf_set_osabi
122 #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
124 /* The name of the dynamic interpreter. This is put in the .interp
126 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
128 /* The size in bytes of an entry in the procedure linkage table. */
129 #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
131 /* The initial size of the plt reserved for the dynamic linker. */
132 #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
134 /* Offsets to some stack save slots. */
136 #define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
137 /* This one is dodgy. ABIv2 does not have a linker word, so use the
138 CR save slot. Used only by optimised __tls_get_addr call stub,
139 relying on __tls_get_addr_opt not saving CR.. */
140 #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
142 /* TOC base pointers offset from start of TOC. */
143 #define TOC_BASE_OFF 0x8000
145 /* Offset of tp and dtp pointers from start of TLS block. */
146 #define TP_OFFSET 0x7000
147 #define DTP_OFFSET 0x8000
149 /* .plt call stub instructions. The normal stub is like this, but
150 sometimes the .plt entry crosses a 64k boundary and we need to
151 insert an addi to adjust r11. */
152 #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
153 #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
154 #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
155 #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
156 #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
157 #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
158 #define BCTR 0x4e800420 /* bctr */
160 #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
161 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
162 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
164 #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
165 #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
166 #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
167 #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
168 #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
169 #define BNECTR 0x4ca20420 /* bnectr+ */
170 #define BNECTR_P4 0x4ce20420 /* bnectr+ */
172 #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
173 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
174 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
176 #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
178 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
179 #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
181 /* glink call stub instructions. We enter with the index in R0. */
182 #define GLINK_CALL_STUB_SIZE (16*4)
186 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
187 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
189 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
190 /* ld %2,(0b-1b)(%11) */
191 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
192 #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
198 #define MFLR_R0 0x7c0802a6 /* mflr %r0 */
199 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
200 #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
201 #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
202 #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
205 #define NOP 0x60000000
207 /* Some other nops. */
208 #define CROR_151515 0x4def7b82
209 #define CROR_313131 0x4ffffb82
211 /* .glink entries for the first 32k functions are two instructions. */
212 #define LI_R0_0 0x38000000 /* li %r0,0 */
213 #define B_DOT 0x48000000 /* b . */
215 /* After that, we need two instructions to load the index, followed by
217 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
218 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
220 /* Instructions used by the save and restore reg functions. */
221 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
222 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
223 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
224 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
225 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
226 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
227 #define LI_R12_0 0x39800000 /* li %r12,0 */
228 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
229 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
230 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
231 #define BLR 0x4e800020 /* blr */
233 /* Since .opd is an array of descriptors and each entry will end up
234 with identical R_PPC64_RELATIVE relocs, there is really no need to
235 propagate .opd relocs; The dynamic linker should be taught to
236 relocate .opd without reloc entries. */
237 #ifndef NO_OPD_RELOCS
238 #define NO_OPD_RELOCS 0
241 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
243 /* Relocation HOWTO's. */
244 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
246 static reloc_howto_type ppc64_elf_howto_raw[] = {
247 /* This reloc does nothing. */
248 HOWTO (R_PPC64_NONE, /* type */
250 2, /* size (0 = byte, 1 = short, 2 = long) */
252 FALSE, /* pc_relative */
254 complain_overflow_dont, /* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC64_NONE", /* name */
257 FALSE, /* partial_inplace */
260 FALSE), /* pcrel_offset */
262 /* A standard 32 bit relocation. */
263 HOWTO (R_PPC64_ADDR32, /* type */
265 2, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE, /* pc_relative */
269 complain_overflow_bitfield, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC64_ADDR32", /* name */
272 FALSE, /* partial_inplace */
274 0xffffffff, /* dst_mask */
275 FALSE), /* pcrel_offset */
277 /* An absolute 26 bit branch; the lower two bits must be zero.
278 FIXME: we don't check that, we just clear them. */
279 HOWTO (R_PPC64_ADDR24, /* type */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE, /* pc_relative */
285 complain_overflow_bitfield, /* complain_on_overflow */
286 bfd_elf_generic_reloc, /* special_function */
287 "R_PPC64_ADDR24", /* name */
288 FALSE, /* partial_inplace */
290 0x03fffffc, /* dst_mask */
291 FALSE), /* pcrel_offset */
293 /* A standard 16 bit relocation. */
294 HOWTO (R_PPC64_ADDR16, /* type */
296 1, /* size (0 = byte, 1 = short, 2 = long) */
298 FALSE, /* pc_relative */
300 complain_overflow_bitfield, /* complain_on_overflow */
301 bfd_elf_generic_reloc, /* special_function */
302 "R_PPC64_ADDR16", /* name */
303 FALSE, /* partial_inplace */
305 0xffff, /* dst_mask */
306 FALSE), /* pcrel_offset */
308 /* A 16 bit relocation without overflow. */
309 HOWTO (R_PPC64_ADDR16_LO, /* type */
311 1, /* size (0 = byte, 1 = short, 2 = long) */
313 FALSE, /* pc_relative */
315 complain_overflow_dont,/* complain_on_overflow */
316 bfd_elf_generic_reloc, /* special_function */
317 "R_PPC64_ADDR16_LO", /* name */
318 FALSE, /* partial_inplace */
320 0xffff, /* dst_mask */
321 FALSE), /* pcrel_offset */
323 /* Bits 16-31 of an address. */
324 HOWTO (R_PPC64_ADDR16_HI, /* type */
326 1, /* size (0 = byte, 1 = short, 2 = long) */
328 FALSE, /* pc_relative */
330 complain_overflow_signed, /* complain_on_overflow */
331 bfd_elf_generic_reloc, /* special_function */
332 "R_PPC64_ADDR16_HI", /* name */
333 FALSE, /* partial_inplace */
335 0xffff, /* dst_mask */
336 FALSE), /* pcrel_offset */
338 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
339 bits, treated as a signed number, is negative. */
340 HOWTO (R_PPC64_ADDR16_HA, /* type */
342 1, /* size (0 = byte, 1 = short, 2 = long) */
344 FALSE, /* pc_relative */
346 complain_overflow_signed, /* complain_on_overflow */
347 ppc64_elf_ha_reloc, /* special_function */
348 "R_PPC64_ADDR16_HA", /* name */
349 FALSE, /* partial_inplace */
351 0xffff, /* dst_mask */
352 FALSE), /* pcrel_offset */
354 /* An absolute 16 bit branch; the lower two bits must be zero.
355 FIXME: we don't check that, we just clear them. */
356 HOWTO (R_PPC64_ADDR14, /* type */
358 2, /* size (0 = byte, 1 = short, 2 = long) */
360 FALSE, /* pc_relative */
362 complain_overflow_bitfield, /* complain_on_overflow */
363 ppc64_elf_branch_reloc, /* special_function */
364 "R_PPC64_ADDR14", /* name */
365 FALSE, /* partial_inplace */
367 0x0000fffc, /* dst_mask */
368 FALSE), /* pcrel_offset */
370 /* An absolute 16 bit branch, for which bit 10 should be set to
371 indicate that the branch is expected to be taken. The lower two
372 bits must be zero. */
373 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
375 2, /* size (0 = byte, 1 = short, 2 = long) */
377 FALSE, /* pc_relative */
379 complain_overflow_bitfield, /* complain_on_overflow */
380 ppc64_elf_brtaken_reloc, /* special_function */
381 "R_PPC64_ADDR14_BRTAKEN",/* name */
382 FALSE, /* partial_inplace */
384 0x0000fffc, /* dst_mask */
385 FALSE), /* pcrel_offset */
387 /* An absolute 16 bit branch, for which bit 10 should be set to
388 indicate that the branch is not expected to be taken. The lower
389 two bits must be zero. */
390 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
392 2, /* size (0 = byte, 1 = short, 2 = long) */
394 FALSE, /* pc_relative */
396 complain_overflow_bitfield, /* complain_on_overflow */
397 ppc64_elf_brtaken_reloc, /* special_function */
398 "R_PPC64_ADDR14_BRNTAKEN",/* name */
399 FALSE, /* partial_inplace */
401 0x0000fffc, /* dst_mask */
402 FALSE), /* pcrel_offset */
404 /* A relative 26 bit branch; the lower two bits must be zero. */
405 HOWTO (R_PPC64_REL24, /* type */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
409 TRUE, /* pc_relative */
411 complain_overflow_signed, /* complain_on_overflow */
412 ppc64_elf_branch_reloc, /* special_function */
413 "R_PPC64_REL24", /* name */
414 FALSE, /* partial_inplace */
416 0x03fffffc, /* dst_mask */
417 TRUE), /* pcrel_offset */
419 /* A relative 16 bit branch; the lower two bits must be zero. */
420 HOWTO (R_PPC64_REL14, /* type */
422 2, /* size (0 = byte, 1 = short, 2 = long) */
424 TRUE, /* pc_relative */
426 complain_overflow_signed, /* complain_on_overflow */
427 ppc64_elf_branch_reloc, /* special_function */
428 "R_PPC64_REL14", /* name */
429 FALSE, /* partial_inplace */
431 0x0000fffc, /* dst_mask */
432 TRUE), /* pcrel_offset */
434 /* A relative 16 bit branch. Bit 10 should be set to indicate that
435 the branch is expected to be taken. The lower two bits must be
437 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
439 2, /* size (0 = byte, 1 = short, 2 = long) */
441 TRUE, /* pc_relative */
443 complain_overflow_signed, /* complain_on_overflow */
444 ppc64_elf_brtaken_reloc, /* special_function */
445 "R_PPC64_REL14_BRTAKEN", /* name */
446 FALSE, /* partial_inplace */
448 0x0000fffc, /* dst_mask */
449 TRUE), /* pcrel_offset */
451 /* A relative 16 bit branch. Bit 10 should be set to indicate that
452 the branch is not expected to be taken. The lower two bits must
454 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
456 2, /* size (0 = byte, 1 = short, 2 = long) */
458 TRUE, /* pc_relative */
460 complain_overflow_signed, /* complain_on_overflow */
461 ppc64_elf_brtaken_reloc, /* special_function */
462 "R_PPC64_REL14_BRNTAKEN",/* name */
463 FALSE, /* partial_inplace */
465 0x0000fffc, /* dst_mask */
466 TRUE), /* pcrel_offset */
468 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
470 HOWTO (R_PPC64_GOT16, /* type */
472 1, /* size (0 = byte, 1 = short, 2 = long) */
474 FALSE, /* pc_relative */
476 complain_overflow_signed, /* complain_on_overflow */
477 ppc64_elf_unhandled_reloc, /* special_function */
478 "R_PPC64_GOT16", /* name */
479 FALSE, /* partial_inplace */
481 0xffff, /* dst_mask */
482 FALSE), /* pcrel_offset */
484 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
486 HOWTO (R_PPC64_GOT16_LO, /* type */
488 1, /* size (0 = byte, 1 = short, 2 = long) */
490 FALSE, /* pc_relative */
492 complain_overflow_dont, /* complain_on_overflow */
493 ppc64_elf_unhandled_reloc, /* special_function */
494 "R_PPC64_GOT16_LO", /* name */
495 FALSE, /* partial_inplace */
497 0xffff, /* dst_mask */
498 FALSE), /* pcrel_offset */
500 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
502 HOWTO (R_PPC64_GOT16_HI, /* type */
504 1, /* size (0 = byte, 1 = short, 2 = long) */
506 FALSE, /* pc_relative */
508 complain_overflow_signed,/* complain_on_overflow */
509 ppc64_elf_unhandled_reloc, /* special_function */
510 "R_PPC64_GOT16_HI", /* name */
511 FALSE, /* partial_inplace */
513 0xffff, /* dst_mask */
514 FALSE), /* pcrel_offset */
516 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
518 HOWTO (R_PPC64_GOT16_HA, /* type */
520 1, /* size (0 = byte, 1 = short, 2 = long) */
522 FALSE, /* pc_relative */
524 complain_overflow_signed,/* complain_on_overflow */
525 ppc64_elf_unhandled_reloc, /* special_function */
526 "R_PPC64_GOT16_HA", /* name */
527 FALSE, /* partial_inplace */
529 0xffff, /* dst_mask */
530 FALSE), /* pcrel_offset */
532 /* This is used only by the dynamic linker. The symbol should exist
533 both in the object being run and in some shared library. The
534 dynamic linker copies the data addressed by the symbol from the
535 shared library into the object, because the object being
536 run has to have the data at some particular address. */
537 HOWTO (R_PPC64_COPY, /* type */
539 0, /* this one is variable size */
541 FALSE, /* pc_relative */
543 complain_overflow_dont, /* complain_on_overflow */
544 ppc64_elf_unhandled_reloc, /* special_function */
545 "R_PPC64_COPY", /* name */
546 FALSE, /* partial_inplace */
549 FALSE), /* pcrel_offset */
551 /* Like R_PPC64_ADDR64, but used when setting global offset table
553 HOWTO (R_PPC64_GLOB_DAT, /* type */
555 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
557 FALSE, /* pc_relative */
559 complain_overflow_dont, /* complain_on_overflow */
560 ppc64_elf_unhandled_reloc, /* special_function */
561 "R_PPC64_GLOB_DAT", /* name */
562 FALSE, /* partial_inplace */
564 ONES (64), /* dst_mask */
565 FALSE), /* pcrel_offset */
567 /* Created by the link editor. Marks a procedure linkage table
568 entry for a symbol. */
569 HOWTO (R_PPC64_JMP_SLOT, /* type */
571 0, /* size (0 = byte, 1 = short, 2 = long) */
573 FALSE, /* pc_relative */
575 complain_overflow_dont, /* complain_on_overflow */
576 ppc64_elf_unhandled_reloc, /* special_function */
577 "R_PPC64_JMP_SLOT", /* name */
578 FALSE, /* partial_inplace */
581 FALSE), /* pcrel_offset */
583 /* Used only by the dynamic linker. When the object is run, this
584 doubleword64 is set to the load address of the object, plus the
586 HOWTO (R_PPC64_RELATIVE, /* type */
588 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
590 FALSE, /* pc_relative */
592 complain_overflow_dont, /* complain_on_overflow */
593 bfd_elf_generic_reloc, /* special_function */
594 "R_PPC64_RELATIVE", /* name */
595 FALSE, /* partial_inplace */
597 ONES (64), /* dst_mask */
598 FALSE), /* pcrel_offset */
600 /* Like R_PPC64_ADDR32, but may be unaligned. */
601 HOWTO (R_PPC64_UADDR32, /* type */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
605 FALSE, /* pc_relative */
607 complain_overflow_bitfield, /* complain_on_overflow */
608 bfd_elf_generic_reloc, /* special_function */
609 "R_PPC64_UADDR32", /* name */
610 FALSE, /* partial_inplace */
612 0xffffffff, /* dst_mask */
613 FALSE), /* pcrel_offset */
615 /* Like R_PPC64_ADDR16, but may be unaligned. */
616 HOWTO (R_PPC64_UADDR16, /* type */
618 1, /* size (0 = byte, 1 = short, 2 = long) */
620 FALSE, /* pc_relative */
622 complain_overflow_bitfield, /* complain_on_overflow */
623 bfd_elf_generic_reloc, /* special_function */
624 "R_PPC64_UADDR16", /* name */
625 FALSE, /* partial_inplace */
627 0xffff, /* dst_mask */
628 FALSE), /* pcrel_offset */
630 /* 32-bit PC relative. */
631 HOWTO (R_PPC64_REL32, /* type */
633 2, /* size (0 = byte, 1 = short, 2 = long) */
635 TRUE, /* pc_relative */
637 /* FIXME: Verify. Was complain_overflow_bitfield. */
638 complain_overflow_signed, /* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_PPC64_REL32", /* name */
641 FALSE, /* partial_inplace */
643 0xffffffff, /* dst_mask */
644 TRUE), /* pcrel_offset */
646 /* 32-bit relocation to the symbol's procedure linkage table. */
647 HOWTO (R_PPC64_PLT32, /* type */
649 2, /* size (0 = byte, 1 = short, 2 = long) */
651 FALSE, /* pc_relative */
653 complain_overflow_bitfield, /* complain_on_overflow */
654 ppc64_elf_unhandled_reloc, /* special_function */
655 "R_PPC64_PLT32", /* name */
656 FALSE, /* partial_inplace */
658 0xffffffff, /* dst_mask */
659 FALSE), /* pcrel_offset */
661 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
662 FIXME: R_PPC64_PLTREL32 not supported. */
663 HOWTO (R_PPC64_PLTREL32, /* type */
665 2, /* size (0 = byte, 1 = short, 2 = long) */
667 TRUE, /* pc_relative */
669 complain_overflow_signed, /* complain_on_overflow */
670 bfd_elf_generic_reloc, /* special_function */
671 "R_PPC64_PLTREL32", /* name */
672 FALSE, /* partial_inplace */
674 0xffffffff, /* dst_mask */
675 TRUE), /* pcrel_offset */
677 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
679 HOWTO (R_PPC64_PLT16_LO, /* type */
681 1, /* size (0 = byte, 1 = short, 2 = long) */
683 FALSE, /* pc_relative */
685 complain_overflow_dont, /* complain_on_overflow */
686 ppc64_elf_unhandled_reloc, /* special_function */
687 "R_PPC64_PLT16_LO", /* name */
688 FALSE, /* partial_inplace */
690 0xffff, /* dst_mask */
691 FALSE), /* pcrel_offset */
693 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
695 HOWTO (R_PPC64_PLT16_HI, /* type */
697 1, /* size (0 = byte, 1 = short, 2 = long) */
699 FALSE, /* pc_relative */
701 complain_overflow_signed, /* complain_on_overflow */
702 ppc64_elf_unhandled_reloc, /* special_function */
703 "R_PPC64_PLT16_HI", /* name */
704 FALSE, /* partial_inplace */
706 0xffff, /* dst_mask */
707 FALSE), /* pcrel_offset */
709 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
711 HOWTO (R_PPC64_PLT16_HA, /* type */
713 1, /* size (0 = byte, 1 = short, 2 = long) */
715 FALSE, /* pc_relative */
717 complain_overflow_signed, /* complain_on_overflow */
718 ppc64_elf_unhandled_reloc, /* special_function */
719 "R_PPC64_PLT16_HA", /* name */
720 FALSE, /* partial_inplace */
722 0xffff, /* dst_mask */
723 FALSE), /* pcrel_offset */
725 /* 16-bit section relative relocation. */
726 HOWTO (R_PPC64_SECTOFF, /* type */
728 1, /* size (0 = byte, 1 = short, 2 = long) */
730 FALSE, /* pc_relative */
732 complain_overflow_bitfield, /* complain_on_overflow */
733 ppc64_elf_sectoff_reloc, /* special_function */
734 "R_PPC64_SECTOFF", /* name */
735 FALSE, /* partial_inplace */
737 0xffff, /* dst_mask */
738 FALSE), /* pcrel_offset */
740 /* Like R_PPC64_SECTOFF, but no overflow warning. */
741 HOWTO (R_PPC64_SECTOFF_LO, /* type */
743 1, /* size (0 = byte, 1 = short, 2 = long) */
745 FALSE, /* pc_relative */
747 complain_overflow_dont, /* complain_on_overflow */
748 ppc64_elf_sectoff_reloc, /* special_function */
749 "R_PPC64_SECTOFF_LO", /* name */
750 FALSE, /* partial_inplace */
752 0xffff, /* dst_mask */
753 FALSE), /* pcrel_offset */
755 /* 16-bit upper half section relative relocation. */
756 HOWTO (R_PPC64_SECTOFF_HI, /* type */
758 1, /* size (0 = byte, 1 = short, 2 = long) */
760 FALSE, /* pc_relative */
762 complain_overflow_signed, /* complain_on_overflow */
763 ppc64_elf_sectoff_reloc, /* special_function */
764 "R_PPC64_SECTOFF_HI", /* name */
765 FALSE, /* partial_inplace */
767 0xffff, /* dst_mask */
768 FALSE), /* pcrel_offset */
770 /* 16-bit upper half adjusted section relative relocation. */
771 HOWTO (R_PPC64_SECTOFF_HA, /* type */
773 1, /* size (0 = byte, 1 = short, 2 = long) */
775 FALSE, /* pc_relative */
777 complain_overflow_signed, /* complain_on_overflow */
778 ppc64_elf_sectoff_ha_reloc, /* special_function */
779 "R_PPC64_SECTOFF_HA", /* name */
780 FALSE, /* partial_inplace */
782 0xffff, /* dst_mask */
783 FALSE), /* pcrel_offset */
785 /* Like R_PPC64_REL24 without touching the two least significant bits. */
786 HOWTO (R_PPC64_REL30, /* type */
788 2, /* size (0 = byte, 1 = short, 2 = long) */
790 TRUE, /* pc_relative */
792 complain_overflow_dont, /* complain_on_overflow */
793 bfd_elf_generic_reloc, /* special_function */
794 "R_PPC64_REL30", /* name */
795 FALSE, /* partial_inplace */
797 0xfffffffc, /* dst_mask */
798 TRUE), /* pcrel_offset */
800 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
802 /* A standard 64-bit relocation. */
803 HOWTO (R_PPC64_ADDR64, /* type */
805 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
807 FALSE, /* pc_relative */
809 complain_overflow_dont, /* complain_on_overflow */
810 bfd_elf_generic_reloc, /* special_function */
811 "R_PPC64_ADDR64", /* name */
812 FALSE, /* partial_inplace */
814 ONES (64), /* dst_mask */
815 FALSE), /* pcrel_offset */
817 /* The bits 32-47 of an address. */
818 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
820 1, /* size (0 = byte, 1 = short, 2 = long) */
822 FALSE, /* pc_relative */
824 complain_overflow_dont, /* complain_on_overflow */
825 bfd_elf_generic_reloc, /* special_function */
826 "R_PPC64_ADDR16_HIGHER", /* name */
827 FALSE, /* partial_inplace */
829 0xffff, /* dst_mask */
830 FALSE), /* pcrel_offset */
832 /* The bits 32-47 of an address, plus 1 if the contents of the low
833 16 bits, treated as a signed number, is negative. */
834 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
836 1, /* size (0 = byte, 1 = short, 2 = long) */
838 FALSE, /* pc_relative */
840 complain_overflow_dont, /* complain_on_overflow */
841 ppc64_elf_ha_reloc, /* special_function */
842 "R_PPC64_ADDR16_HIGHERA", /* name */
843 FALSE, /* partial_inplace */
845 0xffff, /* dst_mask */
846 FALSE), /* pcrel_offset */
848 /* The bits 48-63 of an address. */
849 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
851 1, /* size (0 = byte, 1 = short, 2 = long) */
853 FALSE, /* pc_relative */
855 complain_overflow_dont, /* complain_on_overflow */
856 bfd_elf_generic_reloc, /* special_function */
857 "R_PPC64_ADDR16_HIGHEST", /* name */
858 FALSE, /* partial_inplace */
860 0xffff, /* dst_mask */
861 FALSE), /* pcrel_offset */
863 /* The bits 48-63 of an address, plus 1 if the contents of the low
864 16 bits, treated as a signed number, is negative. */
865 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
867 1, /* size (0 = byte, 1 = short, 2 = long) */
869 FALSE, /* pc_relative */
871 complain_overflow_dont, /* complain_on_overflow */
872 ppc64_elf_ha_reloc, /* special_function */
873 "R_PPC64_ADDR16_HIGHESTA", /* name */
874 FALSE, /* partial_inplace */
876 0xffff, /* dst_mask */
877 FALSE), /* pcrel_offset */
879 /* Like ADDR64, but may be unaligned. */
880 HOWTO (R_PPC64_UADDR64, /* type */
882 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
884 FALSE, /* pc_relative */
886 complain_overflow_dont, /* complain_on_overflow */
887 bfd_elf_generic_reloc, /* special_function */
888 "R_PPC64_UADDR64", /* name */
889 FALSE, /* partial_inplace */
891 ONES (64), /* dst_mask */
892 FALSE), /* pcrel_offset */
894 /* 64-bit relative relocation. */
895 HOWTO (R_PPC64_REL64, /* type */
897 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
899 TRUE, /* pc_relative */
901 complain_overflow_dont, /* complain_on_overflow */
902 bfd_elf_generic_reloc, /* special_function */
903 "R_PPC64_REL64", /* name */
904 FALSE, /* partial_inplace */
906 ONES (64), /* dst_mask */
907 TRUE), /* pcrel_offset */
909 /* 64-bit relocation to the symbol's procedure linkage table. */
910 HOWTO (R_PPC64_PLT64, /* type */
912 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
914 FALSE, /* pc_relative */
916 complain_overflow_dont, /* complain_on_overflow */
917 ppc64_elf_unhandled_reloc, /* special_function */
918 "R_PPC64_PLT64", /* name */
919 FALSE, /* partial_inplace */
921 ONES (64), /* dst_mask */
922 FALSE), /* pcrel_offset */
924 /* 64-bit PC relative relocation to the symbol's procedure linkage
926 /* FIXME: R_PPC64_PLTREL64 not supported. */
927 HOWTO (R_PPC64_PLTREL64, /* type */
929 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
931 TRUE, /* pc_relative */
933 complain_overflow_dont, /* complain_on_overflow */
934 ppc64_elf_unhandled_reloc, /* special_function */
935 "R_PPC64_PLTREL64", /* name */
936 FALSE, /* partial_inplace */
938 ONES (64), /* dst_mask */
939 TRUE), /* pcrel_offset */
941 /* 16 bit TOC-relative relocation. */
943 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
944 HOWTO (R_PPC64_TOC16, /* type */
946 1, /* size (0 = byte, 1 = short, 2 = long) */
948 FALSE, /* pc_relative */
950 complain_overflow_signed, /* complain_on_overflow */
951 ppc64_elf_toc_reloc, /* special_function */
952 "R_PPC64_TOC16", /* name */
953 FALSE, /* partial_inplace */
955 0xffff, /* dst_mask */
956 FALSE), /* pcrel_offset */
958 /* 16 bit TOC-relative relocation without overflow. */
960 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
961 HOWTO (R_PPC64_TOC16_LO, /* type */
963 1, /* size (0 = byte, 1 = short, 2 = long) */
965 FALSE, /* pc_relative */
967 complain_overflow_dont, /* complain_on_overflow */
968 ppc64_elf_toc_reloc, /* special_function */
969 "R_PPC64_TOC16_LO", /* name */
970 FALSE, /* partial_inplace */
972 0xffff, /* dst_mask */
973 FALSE), /* pcrel_offset */
975 /* 16 bit TOC-relative relocation, high 16 bits. */
977 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
978 HOWTO (R_PPC64_TOC16_HI, /* type */
980 1, /* size (0 = byte, 1 = short, 2 = long) */
982 FALSE, /* pc_relative */
984 complain_overflow_signed, /* complain_on_overflow */
985 ppc64_elf_toc_reloc, /* special_function */
986 "R_PPC64_TOC16_HI", /* name */
987 FALSE, /* partial_inplace */
989 0xffff, /* dst_mask */
990 FALSE), /* pcrel_offset */
992 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
993 contents of the low 16 bits, treated as a signed number, is
996 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
997 HOWTO (R_PPC64_TOC16_HA, /* type */
999 1, /* size (0 = byte, 1 = short, 2 = long) */
1001 FALSE, /* pc_relative */
1003 complain_overflow_signed, /* complain_on_overflow */
1004 ppc64_elf_toc_ha_reloc, /* special_function */
1005 "R_PPC64_TOC16_HA", /* name */
1006 FALSE, /* partial_inplace */
1008 0xffff, /* dst_mask */
1009 FALSE), /* pcrel_offset */
1011 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1013 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1014 HOWTO (R_PPC64_TOC, /* type */
1016 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1018 FALSE, /* pc_relative */
1020 complain_overflow_bitfield, /* complain_on_overflow */
1021 ppc64_elf_toc64_reloc, /* special_function */
1022 "R_PPC64_TOC", /* name */
1023 FALSE, /* partial_inplace */
1025 ONES (64), /* dst_mask */
1026 FALSE), /* pcrel_offset */
1028 /* Like R_PPC64_GOT16, but also informs the link editor that the
1029 value to relocate may (!) refer to a PLT entry which the link
1030 editor (a) may replace with the symbol value. If the link editor
1031 is unable to fully resolve the symbol, it may (b) create a PLT
1032 entry and store the address to the new PLT entry in the GOT.
1033 This permits lazy resolution of function symbols at run time.
1034 The link editor may also skip all of this and just (c) emit a
1035 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1036 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1037 HOWTO (R_PPC64_PLTGOT16, /* type */
1039 1, /* size (0 = byte, 1 = short, 2 = long) */
1041 FALSE, /* pc_relative */
1043 complain_overflow_signed, /* complain_on_overflow */
1044 ppc64_elf_unhandled_reloc, /* special_function */
1045 "R_PPC64_PLTGOT16", /* name */
1046 FALSE, /* partial_inplace */
1048 0xffff, /* dst_mask */
1049 FALSE), /* pcrel_offset */
1051 /* Like R_PPC64_PLTGOT16, but without overflow. */
1052 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1053 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1055 1, /* size (0 = byte, 1 = short, 2 = long) */
1057 FALSE, /* pc_relative */
1059 complain_overflow_dont, /* complain_on_overflow */
1060 ppc64_elf_unhandled_reloc, /* special_function */
1061 "R_PPC64_PLTGOT16_LO", /* name */
1062 FALSE, /* partial_inplace */
1064 0xffff, /* dst_mask */
1065 FALSE), /* pcrel_offset */
1067 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1068 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1070 16, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1073 FALSE, /* pc_relative */
1075 complain_overflow_signed, /* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc, /* special_function */
1077 "R_PPC64_PLTGOT16_HI", /* name */
1078 FALSE, /* partial_inplace */
1080 0xffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1083 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1084 1 if the contents of the low 16 bits, treated as a signed number,
1086 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1087 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1088 16, /* rightshift */
1089 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 FALSE, /* pc_relative */
1093 complain_overflow_signed, /* complain_on_overflow */
1094 ppc64_elf_unhandled_reloc, /* special_function */
1095 "R_PPC64_PLTGOT16_HA", /* name */
1096 FALSE, /* partial_inplace */
1098 0xffff, /* dst_mask */
1099 FALSE), /* pcrel_offset */
1101 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1102 HOWTO (R_PPC64_ADDR16_DS, /* type */
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE, /* pc_relative */
1108 complain_overflow_bitfield, /* complain_on_overflow */
1109 bfd_elf_generic_reloc, /* special_function */
1110 "R_PPC64_ADDR16_DS", /* name */
1111 FALSE, /* partial_inplace */
1113 0xfffc, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1116 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1117 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1119 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 FALSE, /* pc_relative */
1123 complain_overflow_dont,/* complain_on_overflow */
1124 bfd_elf_generic_reloc, /* special_function */
1125 "R_PPC64_ADDR16_LO_DS",/* name */
1126 FALSE, /* partial_inplace */
1128 0xfffc, /* dst_mask */
1129 FALSE), /* pcrel_offset */
1131 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1132 HOWTO (R_PPC64_GOT16_DS, /* type */
1134 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 FALSE, /* pc_relative */
1138 complain_overflow_signed, /* complain_on_overflow */
1139 ppc64_elf_unhandled_reloc, /* special_function */
1140 "R_PPC64_GOT16_DS", /* name */
1141 FALSE, /* partial_inplace */
1143 0xfffc, /* dst_mask */
1144 FALSE), /* pcrel_offset */
1146 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1147 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1149 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 FALSE, /* pc_relative */
1153 complain_overflow_dont, /* complain_on_overflow */
1154 ppc64_elf_unhandled_reloc, /* special_function */
1155 "R_PPC64_GOT16_LO_DS", /* name */
1156 FALSE, /* partial_inplace */
1158 0xfffc, /* dst_mask */
1159 FALSE), /* pcrel_offset */
1161 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1162 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1164 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 FALSE, /* pc_relative */
1168 complain_overflow_dont, /* complain_on_overflow */
1169 ppc64_elf_unhandled_reloc, /* special_function */
1170 "R_PPC64_PLT16_LO_DS", /* name */
1171 FALSE, /* partial_inplace */
1173 0xfffc, /* dst_mask */
1174 FALSE), /* pcrel_offset */
1176 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1177 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1179 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 FALSE, /* pc_relative */
1183 complain_overflow_bitfield, /* complain_on_overflow */
1184 ppc64_elf_sectoff_reloc, /* special_function */
1185 "R_PPC64_SECTOFF_DS", /* name */
1186 FALSE, /* partial_inplace */
1188 0xfffc, /* dst_mask */
1189 FALSE), /* pcrel_offset */
1191 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1192 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1194 1, /* size (0 = byte, 1 = short, 2 = long) */
1196 FALSE, /* pc_relative */
1198 complain_overflow_dont, /* complain_on_overflow */
1199 ppc64_elf_sectoff_reloc, /* special_function */
1200 "R_PPC64_SECTOFF_LO_DS",/* name */
1201 FALSE, /* partial_inplace */
1203 0xfffc, /* dst_mask */
1204 FALSE), /* pcrel_offset */
1206 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1207 HOWTO (R_PPC64_TOC16_DS, /* type */
1209 1, /* size (0 = byte, 1 = short, 2 = long) */
1211 FALSE, /* pc_relative */
1213 complain_overflow_signed, /* complain_on_overflow */
1214 ppc64_elf_toc_reloc, /* special_function */
1215 "R_PPC64_TOC16_DS", /* name */
1216 FALSE, /* partial_inplace */
1218 0xfffc, /* dst_mask */
1219 FALSE), /* pcrel_offset */
1221 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1222 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1224 1, /* size (0 = byte, 1 = short, 2 = long) */
1226 FALSE, /* pc_relative */
1228 complain_overflow_dont, /* complain_on_overflow */
1229 ppc64_elf_toc_reloc, /* special_function */
1230 "R_PPC64_TOC16_LO_DS", /* name */
1231 FALSE, /* partial_inplace */
1233 0xfffc, /* dst_mask */
1234 FALSE), /* pcrel_offset */
1236 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1237 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1238 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1240 1, /* size (0 = byte, 1 = short, 2 = long) */
1242 FALSE, /* pc_relative */
1244 complain_overflow_signed, /* complain_on_overflow */
1245 ppc64_elf_unhandled_reloc, /* special_function */
1246 "R_PPC64_PLTGOT16_DS", /* name */
1247 FALSE, /* partial_inplace */
1249 0xfffc, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1252 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1253 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1254 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1256 1, /* size (0 = byte, 1 = short, 2 = long) */
1258 FALSE, /* pc_relative */
1260 complain_overflow_dont, /* complain_on_overflow */
1261 ppc64_elf_unhandled_reloc, /* special_function */
1262 "R_PPC64_PLTGOT16_LO_DS",/* name */
1263 FALSE, /* partial_inplace */
1265 0xfffc, /* dst_mask */
1266 FALSE), /* pcrel_offset */
1268 /* Marker relocs for TLS. */
1271 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 FALSE, /* pc_relative */
1275 complain_overflow_dont, /* complain_on_overflow */
1276 bfd_elf_generic_reloc, /* special_function */
1277 "R_PPC64_TLS", /* name */
1278 FALSE, /* partial_inplace */
1281 FALSE), /* pcrel_offset */
1283 HOWTO (R_PPC64_TLSGD,
1285 2, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE, /* pc_relative */
1289 complain_overflow_dont, /* complain_on_overflow */
1290 bfd_elf_generic_reloc, /* special_function */
1291 "R_PPC64_TLSGD", /* name */
1292 FALSE, /* partial_inplace */
1295 FALSE), /* pcrel_offset */
1297 HOWTO (R_PPC64_TLSLD,
1299 2, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_dont, /* complain_on_overflow */
1304 bfd_elf_generic_reloc, /* special_function */
1305 "R_PPC64_TLSLD", /* name */
1306 FALSE, /* partial_inplace */
1309 FALSE), /* pcrel_offset */
1311 HOWTO (R_PPC64_TOCSAVE,
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE, /* pc_relative */
1317 complain_overflow_dont, /* complain_on_overflow */
1318 bfd_elf_generic_reloc, /* special_function */
1319 "R_PPC64_TOCSAVE", /* name */
1320 FALSE, /* partial_inplace */
1323 FALSE), /* pcrel_offset */
1325 /* Computes the load module index of the load module that contains the
1326 definition of its TLS sym. */
1327 HOWTO (R_PPC64_DTPMOD64,
1329 4, /* size (0 = byte, 1 = short, 2 = long) */
1331 FALSE, /* pc_relative */
1333 complain_overflow_dont, /* complain_on_overflow */
1334 ppc64_elf_unhandled_reloc, /* special_function */
1335 "R_PPC64_DTPMOD64", /* name */
1336 FALSE, /* partial_inplace */
1338 ONES (64), /* dst_mask */
1339 FALSE), /* pcrel_offset */
1341 /* Computes a dtv-relative displacement, the difference between the value
1342 of sym+add and the base address of the thread-local storage block that
1343 contains the definition of sym, minus 0x8000. */
1344 HOWTO (R_PPC64_DTPREL64,
1346 4, /* size (0 = byte, 1 = short, 2 = long) */
1348 FALSE, /* pc_relative */
1350 complain_overflow_dont, /* complain_on_overflow */
1351 ppc64_elf_unhandled_reloc, /* special_function */
1352 "R_PPC64_DTPREL64", /* name */
1353 FALSE, /* partial_inplace */
1355 ONES (64), /* dst_mask */
1356 FALSE), /* pcrel_offset */
1358 /* A 16 bit dtprel reloc. */
1359 HOWTO (R_PPC64_DTPREL16,
1361 1, /* size (0 = byte, 1 = short, 2 = long) */
1363 FALSE, /* pc_relative */
1365 complain_overflow_signed, /* complain_on_overflow */
1366 ppc64_elf_unhandled_reloc, /* special_function */
1367 "R_PPC64_DTPREL16", /* name */
1368 FALSE, /* partial_inplace */
1370 0xffff, /* dst_mask */
1371 FALSE), /* pcrel_offset */
1373 /* Like DTPREL16, but no overflow. */
1374 HOWTO (R_PPC64_DTPREL16_LO,
1376 1, /* size (0 = byte, 1 = short, 2 = long) */
1378 FALSE, /* pc_relative */
1380 complain_overflow_dont, /* complain_on_overflow */
1381 ppc64_elf_unhandled_reloc, /* special_function */
1382 "R_PPC64_DTPREL16_LO", /* name */
1383 FALSE, /* partial_inplace */
1385 0xffff, /* dst_mask */
1386 FALSE), /* pcrel_offset */
1388 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1389 HOWTO (R_PPC64_DTPREL16_HI,
1390 16, /* rightshift */
1391 1, /* size (0 = byte, 1 = short, 2 = long) */
1393 FALSE, /* pc_relative */
1395 complain_overflow_signed, /* complain_on_overflow */
1396 ppc64_elf_unhandled_reloc, /* special_function */
1397 "R_PPC64_DTPREL16_HI", /* name */
1398 FALSE, /* partial_inplace */
1400 0xffff, /* dst_mask */
1401 FALSE), /* pcrel_offset */
1403 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1404 HOWTO (R_PPC64_DTPREL16_HA,
1405 16, /* rightshift */
1406 1, /* size (0 = byte, 1 = short, 2 = long) */
1408 FALSE, /* pc_relative */
1410 complain_overflow_signed, /* complain_on_overflow */
1411 ppc64_elf_unhandled_reloc, /* special_function */
1412 "R_PPC64_DTPREL16_HA", /* name */
1413 FALSE, /* partial_inplace */
1415 0xffff, /* dst_mask */
1416 FALSE), /* pcrel_offset */
1418 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1419 HOWTO (R_PPC64_DTPREL16_HIGHER,
1420 32, /* rightshift */
1421 1, /* size (0 = byte, 1 = short, 2 = long) */
1423 FALSE, /* pc_relative */
1425 complain_overflow_dont, /* complain_on_overflow */
1426 ppc64_elf_unhandled_reloc, /* special_function */
1427 "R_PPC64_DTPREL16_HIGHER", /* name */
1428 FALSE, /* partial_inplace */
1430 0xffff, /* dst_mask */
1431 FALSE), /* pcrel_offset */
1433 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1434 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1435 32, /* rightshift */
1436 1, /* size (0 = byte, 1 = short, 2 = long) */
1438 FALSE, /* pc_relative */
1440 complain_overflow_dont, /* complain_on_overflow */
1441 ppc64_elf_unhandled_reloc, /* special_function */
1442 "R_PPC64_DTPREL16_HIGHERA", /* name */
1443 FALSE, /* partial_inplace */
1445 0xffff, /* dst_mask */
1446 FALSE), /* pcrel_offset */
1448 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1449 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1450 48, /* rightshift */
1451 1, /* size (0 = byte, 1 = short, 2 = long) */
1453 FALSE, /* pc_relative */
1455 complain_overflow_dont, /* complain_on_overflow */
1456 ppc64_elf_unhandled_reloc, /* special_function */
1457 "R_PPC64_DTPREL16_HIGHEST", /* name */
1458 FALSE, /* partial_inplace */
1460 0xffff, /* dst_mask */
1461 FALSE), /* pcrel_offset */
1463 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1464 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1465 48, /* rightshift */
1466 1, /* size (0 = byte, 1 = short, 2 = long) */
1468 FALSE, /* pc_relative */
1470 complain_overflow_dont, /* complain_on_overflow */
1471 ppc64_elf_unhandled_reloc, /* special_function */
1472 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1473 FALSE, /* partial_inplace */
1475 0xffff, /* dst_mask */
1476 FALSE), /* pcrel_offset */
1478 /* Like DTPREL16, but for insns with a DS field. */
1479 HOWTO (R_PPC64_DTPREL16_DS,
1481 1, /* size (0 = byte, 1 = short, 2 = long) */
1483 FALSE, /* pc_relative */
1485 complain_overflow_signed, /* complain_on_overflow */
1486 ppc64_elf_unhandled_reloc, /* special_function */
1487 "R_PPC64_DTPREL16_DS", /* name */
1488 FALSE, /* partial_inplace */
1490 0xfffc, /* dst_mask */
1491 FALSE), /* pcrel_offset */
1493 /* Like DTPREL16_DS, but no overflow. */
1494 HOWTO (R_PPC64_DTPREL16_LO_DS,
1496 1, /* size (0 = byte, 1 = short, 2 = long) */
1498 FALSE, /* pc_relative */
1500 complain_overflow_dont, /* complain_on_overflow */
1501 ppc64_elf_unhandled_reloc, /* special_function */
1502 "R_PPC64_DTPREL16_LO_DS", /* name */
1503 FALSE, /* partial_inplace */
1505 0xfffc, /* dst_mask */
1506 FALSE), /* pcrel_offset */
1508 /* Computes a tp-relative displacement, the difference between the value of
1509 sym+add and the value of the thread pointer (r13). */
1510 HOWTO (R_PPC64_TPREL64,
1512 4, /* size (0 = byte, 1 = short, 2 = long) */
1514 FALSE, /* pc_relative */
1516 complain_overflow_dont, /* complain_on_overflow */
1517 ppc64_elf_unhandled_reloc, /* special_function */
1518 "R_PPC64_TPREL64", /* name */
1519 FALSE, /* partial_inplace */
1521 ONES (64), /* dst_mask */
1522 FALSE), /* pcrel_offset */
1524 /* A 16 bit tprel reloc. */
1525 HOWTO (R_PPC64_TPREL16,
1527 1, /* size (0 = byte, 1 = short, 2 = long) */
1529 FALSE, /* pc_relative */
1531 complain_overflow_signed, /* complain_on_overflow */
1532 ppc64_elf_unhandled_reloc, /* special_function */
1533 "R_PPC64_TPREL16", /* name */
1534 FALSE, /* partial_inplace */
1536 0xffff, /* dst_mask */
1537 FALSE), /* pcrel_offset */
1539 /* Like TPREL16, but no overflow. */
1540 HOWTO (R_PPC64_TPREL16_LO,
1542 1, /* size (0 = byte, 1 = short, 2 = long) */
1544 FALSE, /* pc_relative */
1546 complain_overflow_dont, /* complain_on_overflow */
1547 ppc64_elf_unhandled_reloc, /* special_function */
1548 "R_PPC64_TPREL16_LO", /* name */
1549 FALSE, /* partial_inplace */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1554 /* Like TPREL16_LO, but next higher group of 16 bits. */
1555 HOWTO (R_PPC64_TPREL16_HI,
1556 16, /* rightshift */
1557 1, /* size (0 = byte, 1 = short, 2 = long) */
1559 FALSE, /* pc_relative */
1561 complain_overflow_signed, /* complain_on_overflow */
1562 ppc64_elf_unhandled_reloc, /* special_function */
1563 "R_PPC64_TPREL16_HI", /* name */
1564 FALSE, /* partial_inplace */
1566 0xffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1569 /* Like TPREL16_HI, but adjust for low 16 bits. */
1570 HOWTO (R_PPC64_TPREL16_HA,
1571 16, /* rightshift */
1572 1, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE, /* pc_relative */
1576 complain_overflow_signed, /* complain_on_overflow */
1577 ppc64_elf_unhandled_reloc, /* special_function */
1578 "R_PPC64_TPREL16_HA", /* name */
1579 FALSE, /* partial_inplace */
1581 0xffff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1584 /* Like TPREL16_HI, but next higher group of 16 bits. */
1585 HOWTO (R_PPC64_TPREL16_HIGHER,
1586 32, /* rightshift */
1587 1, /* size (0 = byte, 1 = short, 2 = long) */
1589 FALSE, /* pc_relative */
1591 complain_overflow_dont, /* complain_on_overflow */
1592 ppc64_elf_unhandled_reloc, /* special_function */
1593 "R_PPC64_TPREL16_HIGHER", /* name */
1594 FALSE, /* partial_inplace */
1596 0xffff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1599 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1600 HOWTO (R_PPC64_TPREL16_HIGHERA,
1601 32, /* rightshift */
1602 1, /* size (0 = byte, 1 = short, 2 = long) */
1604 FALSE, /* pc_relative */
1606 complain_overflow_dont, /* complain_on_overflow */
1607 ppc64_elf_unhandled_reloc, /* special_function */
1608 "R_PPC64_TPREL16_HIGHERA", /* name */
1609 FALSE, /* partial_inplace */
1611 0xffff, /* dst_mask */
1612 FALSE), /* pcrel_offset */
1614 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1615 HOWTO (R_PPC64_TPREL16_HIGHEST,
1616 48, /* rightshift */
1617 1, /* size (0 = byte, 1 = short, 2 = long) */
1619 FALSE, /* pc_relative */
1621 complain_overflow_dont, /* complain_on_overflow */
1622 ppc64_elf_unhandled_reloc, /* special_function */
1623 "R_PPC64_TPREL16_HIGHEST", /* name */
1624 FALSE, /* partial_inplace */
1626 0xffff, /* dst_mask */
1627 FALSE), /* pcrel_offset */
1629 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1630 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1631 48, /* rightshift */
1632 1, /* size (0 = byte, 1 = short, 2 = long) */
1634 FALSE, /* pc_relative */
1636 complain_overflow_dont, /* complain_on_overflow */
1637 ppc64_elf_unhandled_reloc, /* special_function */
1638 "R_PPC64_TPREL16_HIGHESTA", /* name */
1639 FALSE, /* partial_inplace */
1641 0xffff, /* dst_mask */
1642 FALSE), /* pcrel_offset */
1644 /* Like TPREL16, but for insns with a DS field. */
1645 HOWTO (R_PPC64_TPREL16_DS,
1647 1, /* size (0 = byte, 1 = short, 2 = long) */
1649 FALSE, /* pc_relative */
1651 complain_overflow_signed, /* complain_on_overflow */
1652 ppc64_elf_unhandled_reloc, /* special_function */
1653 "R_PPC64_TPREL16_DS", /* name */
1654 FALSE, /* partial_inplace */
1656 0xfffc, /* dst_mask */
1657 FALSE), /* pcrel_offset */
1659 /* Like TPREL16_DS, but no overflow. */
1660 HOWTO (R_PPC64_TPREL16_LO_DS,
1662 1, /* size (0 = byte, 1 = short, 2 = long) */
1664 FALSE, /* pc_relative */
1666 complain_overflow_dont, /* complain_on_overflow */
1667 ppc64_elf_unhandled_reloc, /* special_function */
1668 "R_PPC64_TPREL16_LO_DS", /* name */
1669 FALSE, /* partial_inplace */
1671 0xfffc, /* dst_mask */
1672 FALSE), /* pcrel_offset */
1674 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1675 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1676 to the first entry relative to the TOC base (r2). */
1677 HOWTO (R_PPC64_GOT_TLSGD16,
1679 1, /* size (0 = byte, 1 = short, 2 = long) */
1681 FALSE, /* pc_relative */
1683 complain_overflow_signed, /* complain_on_overflow */
1684 ppc64_elf_unhandled_reloc, /* special_function */
1685 "R_PPC64_GOT_TLSGD16", /* name */
1686 FALSE, /* partial_inplace */
1688 0xffff, /* dst_mask */
1689 FALSE), /* pcrel_offset */
1691 /* Like GOT_TLSGD16, but no overflow. */
1692 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1694 1, /* size (0 = byte, 1 = short, 2 = long) */
1696 FALSE, /* pc_relative */
1698 complain_overflow_dont, /* complain_on_overflow */
1699 ppc64_elf_unhandled_reloc, /* special_function */
1700 "R_PPC64_GOT_TLSGD16_LO", /* name */
1701 FALSE, /* partial_inplace */
1703 0xffff, /* dst_mask */
1704 FALSE), /* pcrel_offset */
1706 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1707 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1708 16, /* rightshift */
1709 1, /* size (0 = byte, 1 = short, 2 = long) */
1711 FALSE, /* pc_relative */
1713 complain_overflow_signed, /* complain_on_overflow */
1714 ppc64_elf_unhandled_reloc, /* special_function */
1715 "R_PPC64_GOT_TLSGD16_HI", /* name */
1716 FALSE, /* partial_inplace */
1718 0xffff, /* dst_mask */
1719 FALSE), /* pcrel_offset */
1721 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1722 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1723 16, /* rightshift */
1724 1, /* size (0 = byte, 1 = short, 2 = long) */
1726 FALSE, /* pc_relative */
1728 complain_overflow_signed, /* complain_on_overflow */
1729 ppc64_elf_unhandled_reloc, /* special_function */
1730 "R_PPC64_GOT_TLSGD16_HA", /* name */
1731 FALSE, /* partial_inplace */
1733 0xffff, /* dst_mask */
1734 FALSE), /* pcrel_offset */
1736 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1737 with values (sym+add)@dtpmod and zero, and computes the offset to the
1738 first entry relative to the TOC base (r2). */
1739 HOWTO (R_PPC64_GOT_TLSLD16,
1741 1, /* size (0 = byte, 1 = short, 2 = long) */
1743 FALSE, /* pc_relative */
1745 complain_overflow_signed, /* complain_on_overflow */
1746 ppc64_elf_unhandled_reloc, /* special_function */
1747 "R_PPC64_GOT_TLSLD16", /* name */
1748 FALSE, /* partial_inplace */
1750 0xffff, /* dst_mask */
1751 FALSE), /* pcrel_offset */
1753 /* Like GOT_TLSLD16, but no overflow. */
1754 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1756 1, /* size (0 = byte, 1 = short, 2 = long) */
1758 FALSE, /* pc_relative */
1760 complain_overflow_dont, /* complain_on_overflow */
1761 ppc64_elf_unhandled_reloc, /* special_function */
1762 "R_PPC64_GOT_TLSLD16_LO", /* name */
1763 FALSE, /* partial_inplace */
1765 0xffff, /* dst_mask */
1766 FALSE), /* pcrel_offset */
1768 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1769 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1770 16, /* rightshift */
1771 1, /* size (0 = byte, 1 = short, 2 = long) */
1773 FALSE, /* pc_relative */
1775 complain_overflow_signed, /* complain_on_overflow */
1776 ppc64_elf_unhandled_reloc, /* special_function */
1777 "R_PPC64_GOT_TLSLD16_HI", /* name */
1778 FALSE, /* partial_inplace */
1780 0xffff, /* dst_mask */
1781 FALSE), /* pcrel_offset */
1783 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1784 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1785 16, /* rightshift */
1786 1, /* size (0 = byte, 1 = short, 2 = long) */
1788 FALSE, /* pc_relative */
1790 complain_overflow_signed, /* complain_on_overflow */
1791 ppc64_elf_unhandled_reloc, /* special_function */
1792 "R_PPC64_GOT_TLSLD16_HA", /* name */
1793 FALSE, /* partial_inplace */
1795 0xffff, /* dst_mask */
1796 FALSE), /* pcrel_offset */
1798 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1799 the offset to the entry relative to the TOC base (r2). */
1800 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1802 1, /* size (0 = byte, 1 = short, 2 = long) */
1804 FALSE, /* pc_relative */
1806 complain_overflow_signed, /* complain_on_overflow */
1807 ppc64_elf_unhandled_reloc, /* special_function */
1808 "R_PPC64_GOT_DTPREL16_DS", /* name */
1809 FALSE, /* partial_inplace */
1811 0xfffc, /* dst_mask */
1812 FALSE), /* pcrel_offset */
1814 /* Like GOT_DTPREL16_DS, but no overflow. */
1815 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1817 1, /* size (0 = byte, 1 = short, 2 = long) */
1819 FALSE, /* pc_relative */
1821 complain_overflow_dont, /* complain_on_overflow */
1822 ppc64_elf_unhandled_reloc, /* special_function */
1823 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1824 FALSE, /* partial_inplace */
1826 0xfffc, /* dst_mask */
1827 FALSE), /* pcrel_offset */
1829 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1830 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1831 16, /* rightshift */
1832 1, /* size (0 = byte, 1 = short, 2 = long) */
1834 FALSE, /* pc_relative */
1836 complain_overflow_signed, /* complain_on_overflow */
1837 ppc64_elf_unhandled_reloc, /* special_function */
1838 "R_PPC64_GOT_DTPREL16_HI", /* name */
1839 FALSE, /* partial_inplace */
1841 0xffff, /* dst_mask */
1842 FALSE), /* pcrel_offset */
1844 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1845 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1846 16, /* rightshift */
1847 1, /* size (0 = byte, 1 = short, 2 = long) */
1849 FALSE, /* pc_relative */
1851 complain_overflow_signed, /* complain_on_overflow */
1852 ppc64_elf_unhandled_reloc, /* special_function */
1853 "R_PPC64_GOT_DTPREL16_HA", /* name */
1854 FALSE, /* partial_inplace */
1856 0xffff, /* dst_mask */
1857 FALSE), /* pcrel_offset */
1859 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1860 offset to the entry relative to the TOC base (r2). */
1861 HOWTO (R_PPC64_GOT_TPREL16_DS,
1863 1, /* size (0 = byte, 1 = short, 2 = long) */
1865 FALSE, /* pc_relative */
1867 complain_overflow_signed, /* complain_on_overflow */
1868 ppc64_elf_unhandled_reloc, /* special_function */
1869 "R_PPC64_GOT_TPREL16_DS", /* name */
1870 FALSE, /* partial_inplace */
1872 0xfffc, /* dst_mask */
1873 FALSE), /* pcrel_offset */
1875 /* Like GOT_TPREL16_DS, but no overflow. */
1876 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1878 1, /* size (0 = byte, 1 = short, 2 = long) */
1880 FALSE, /* pc_relative */
1882 complain_overflow_dont, /* complain_on_overflow */
1883 ppc64_elf_unhandled_reloc, /* special_function */
1884 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1885 FALSE, /* partial_inplace */
1887 0xfffc, /* dst_mask */
1888 FALSE), /* pcrel_offset */
1890 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1891 HOWTO (R_PPC64_GOT_TPREL16_HI,
1892 16, /* rightshift */
1893 1, /* size (0 = byte, 1 = short, 2 = long) */
1895 FALSE, /* pc_relative */
1897 complain_overflow_signed, /* complain_on_overflow */
1898 ppc64_elf_unhandled_reloc, /* special_function */
1899 "R_PPC64_GOT_TPREL16_HI", /* name */
1900 FALSE, /* partial_inplace */
1902 0xffff, /* dst_mask */
1903 FALSE), /* pcrel_offset */
1905 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1906 HOWTO (R_PPC64_GOT_TPREL16_HA,
1907 16, /* rightshift */
1908 1, /* size (0 = byte, 1 = short, 2 = long) */
1910 FALSE, /* pc_relative */
1912 complain_overflow_signed, /* complain_on_overflow */
1913 ppc64_elf_unhandled_reloc, /* special_function */
1914 "R_PPC64_GOT_TPREL16_HA", /* name */
1915 FALSE, /* partial_inplace */
1917 0xffff, /* dst_mask */
1918 FALSE), /* pcrel_offset */
1920 HOWTO (R_PPC64_JMP_IREL, /* type */
1922 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1924 FALSE, /* pc_relative */
1926 complain_overflow_dont, /* complain_on_overflow */
1927 ppc64_elf_unhandled_reloc, /* special_function */
1928 "R_PPC64_JMP_IREL", /* name */
1929 FALSE, /* partial_inplace */
1932 FALSE), /* pcrel_offset */
1934 HOWTO (R_PPC64_IRELATIVE, /* type */
1936 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1938 FALSE, /* pc_relative */
1940 complain_overflow_dont, /* complain_on_overflow */
1941 bfd_elf_generic_reloc, /* special_function */
1942 "R_PPC64_IRELATIVE", /* name */
1943 FALSE, /* partial_inplace */
1945 ONES (64), /* dst_mask */
1946 FALSE), /* pcrel_offset */
1948 /* A 16 bit relative relocation. */
1949 HOWTO (R_PPC64_REL16, /* type */
1951 1, /* size (0 = byte, 1 = short, 2 = long) */
1953 TRUE, /* pc_relative */
1955 complain_overflow_bitfield, /* complain_on_overflow */
1956 bfd_elf_generic_reloc, /* special_function */
1957 "R_PPC64_REL16", /* name */
1958 FALSE, /* partial_inplace */
1960 0xffff, /* dst_mask */
1961 TRUE), /* pcrel_offset */
1963 /* A 16 bit relative relocation without overflow. */
1964 HOWTO (R_PPC64_REL16_LO, /* type */
1966 1, /* size (0 = byte, 1 = short, 2 = long) */
1968 TRUE, /* pc_relative */
1970 complain_overflow_dont,/* complain_on_overflow */
1971 bfd_elf_generic_reloc, /* special_function */
1972 "R_PPC64_REL16_LO", /* name */
1973 FALSE, /* partial_inplace */
1975 0xffff, /* dst_mask */
1976 TRUE), /* pcrel_offset */
1978 /* The high order 16 bits of a relative address. */
1979 HOWTO (R_PPC64_REL16_HI, /* type */
1980 16, /* rightshift */
1981 1, /* size (0 = byte, 1 = short, 2 = long) */
1983 TRUE, /* pc_relative */
1985 complain_overflow_signed, /* complain_on_overflow */
1986 bfd_elf_generic_reloc, /* special_function */
1987 "R_PPC64_REL16_HI", /* name */
1988 FALSE, /* partial_inplace */
1990 0xffff, /* dst_mask */
1991 TRUE), /* pcrel_offset */
1993 /* The high order 16 bits of a relative address, plus 1 if the contents of
1994 the low 16 bits, treated as a signed number, is negative. */
1995 HOWTO (R_PPC64_REL16_HA, /* type */
1996 16, /* rightshift */
1997 1, /* size (0 = byte, 1 = short, 2 = long) */
1999 TRUE, /* pc_relative */
2001 complain_overflow_signed, /* complain_on_overflow */
2002 ppc64_elf_ha_reloc, /* special_function */
2003 "R_PPC64_REL16_HA", /* name */
2004 FALSE, /* partial_inplace */
2006 0xffff, /* dst_mask */
2007 TRUE), /* pcrel_offset */
2009 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2010 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2011 16, /* rightshift */
2012 1, /* size (0 = byte, 1 = short, 2 = long) */
2014 FALSE, /* pc_relative */
2016 complain_overflow_dont, /* complain_on_overflow */
2017 bfd_elf_generic_reloc, /* special_function */
2018 "R_PPC64_ADDR16_HIGH", /* name */
2019 FALSE, /* partial_inplace */
2021 0xffff, /* dst_mask */
2022 FALSE), /* pcrel_offset */
2024 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2025 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2026 16, /* rightshift */
2027 1, /* size (0 = byte, 1 = short, 2 = long) */
2029 FALSE, /* pc_relative */
2031 complain_overflow_dont, /* complain_on_overflow */
2032 ppc64_elf_ha_reloc, /* special_function */
2033 "R_PPC64_ADDR16_HIGHA", /* name */
2034 FALSE, /* partial_inplace */
2036 0xffff, /* dst_mask */
2037 FALSE), /* pcrel_offset */
2039 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2040 HOWTO (R_PPC64_DTPREL16_HIGH,
2041 16, /* rightshift */
2042 1, /* size (0 = byte, 1 = short, 2 = long) */
2044 FALSE, /* pc_relative */
2046 complain_overflow_dont, /* complain_on_overflow */
2047 ppc64_elf_unhandled_reloc, /* special_function */
2048 "R_PPC64_DTPREL16_HIGH", /* name */
2049 FALSE, /* partial_inplace */
2051 0xffff, /* dst_mask */
2052 FALSE), /* pcrel_offset */
2054 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2055 HOWTO (R_PPC64_DTPREL16_HIGHA,
2056 16, /* rightshift */
2057 1, /* size (0 = byte, 1 = short, 2 = long) */
2059 FALSE, /* pc_relative */
2061 complain_overflow_dont, /* complain_on_overflow */
2062 ppc64_elf_unhandled_reloc, /* special_function */
2063 "R_PPC64_DTPREL16_HIGHA", /* name */
2064 FALSE, /* partial_inplace */
2066 0xffff, /* dst_mask */
2067 FALSE), /* pcrel_offset */
2069 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2070 HOWTO (R_PPC64_TPREL16_HIGH,
2071 16, /* rightshift */
2072 1, /* size (0 = byte, 1 = short, 2 = long) */
2074 FALSE, /* pc_relative */
2076 complain_overflow_dont, /* complain_on_overflow */
2077 ppc64_elf_unhandled_reloc, /* special_function */
2078 "R_PPC64_TPREL16_HIGH", /* name */
2079 FALSE, /* partial_inplace */
2081 0xffff, /* dst_mask */
2082 FALSE), /* pcrel_offset */
2084 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2085 HOWTO (R_PPC64_TPREL16_HIGHA,
2086 16, /* rightshift */
2087 1, /* size (0 = byte, 1 = short, 2 = long) */
2089 FALSE, /* pc_relative */
2091 complain_overflow_dont, /* complain_on_overflow */
2092 ppc64_elf_unhandled_reloc, /* special_function */
2093 "R_PPC64_TPREL16_HIGHA", /* name */
2094 FALSE, /* partial_inplace */
2096 0xffff, /* dst_mask */
2097 FALSE), /* pcrel_offset */
2099 /* GNU extension to record C++ vtable hierarchy. */
2100 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2102 0, /* size (0 = byte, 1 = short, 2 = long) */
2104 FALSE, /* pc_relative */
2106 complain_overflow_dont, /* complain_on_overflow */
2107 NULL, /* special_function */
2108 "R_PPC64_GNU_VTINHERIT", /* name */
2109 FALSE, /* partial_inplace */
2112 FALSE), /* pcrel_offset */
2114 /* GNU extension to record C++ vtable member usage. */
2115 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2117 0, /* size (0 = byte, 1 = short, 2 = long) */
2119 FALSE, /* pc_relative */
2121 complain_overflow_dont, /* complain_on_overflow */
2122 NULL, /* special_function */
2123 "R_PPC64_GNU_VTENTRY", /* name */
2124 FALSE, /* partial_inplace */
2127 FALSE), /* pcrel_offset */
2131 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2135 ppc_howto_init (void)
2137 unsigned int i, type;
2140 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2143 type = ppc64_elf_howto_raw[i].type;
2144 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2145 / sizeof (ppc64_elf_howto_table[0])));
2146 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2150 static reloc_howto_type *
2151 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2152 bfd_reloc_code_real_type code)
2154 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2156 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2157 /* Initialize howto table if needed. */
2165 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2167 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2169 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2171 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2173 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2175 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2177 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2179 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2181 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2183 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2185 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2187 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2189 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2191 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2193 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2195 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2197 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2199 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2201 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2203 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2205 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2207 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2209 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2211 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2213 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2215 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2217 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2219 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2221 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2223 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2225 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2227 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2229 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2231 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2233 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2235 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2237 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2239 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2241 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2243 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2245 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2247 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2249 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2251 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2253 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2255 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2257 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2259 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2261 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2263 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2265 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2267 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2269 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2271 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2273 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2275 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2277 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2279 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2281 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2283 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2285 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2287 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2289 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2291 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2293 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2295 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2297 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2299 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2301 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2303 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2305 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2307 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2309 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2311 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2313 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2315 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2317 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2319 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2321 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2323 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2325 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2327 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2329 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2331 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2333 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2335 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2337 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2339 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2341 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2343 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2345 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2347 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2349 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2351 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2353 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2355 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2357 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2359 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2361 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2363 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2365 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2367 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2369 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2371 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2373 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2375 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2377 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2379 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2381 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2383 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2385 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2387 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2389 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2393 return ppc64_elf_howto_table[r];
2396 static reloc_howto_type *
2397 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2403 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2405 if (ppc64_elf_howto_raw[i].name != NULL
2406 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2407 return &ppc64_elf_howto_raw[i];
2412 /* Set the howto pointer for a PowerPC ELF reloc. */
2415 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2416 Elf_Internal_Rela *dst)
2420 /* Initialize howto table if needed. */
2421 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2424 type = ELF64_R_TYPE (dst->r_info);
2425 if (type >= (sizeof (ppc64_elf_howto_table)
2426 / sizeof (ppc64_elf_howto_table[0])))
2428 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2430 type = R_PPC64_NONE;
2432 cache_ptr->howto = ppc64_elf_howto_table[type];
2435 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2437 static bfd_reloc_status_type
2438 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2439 void *data, asection *input_section,
2440 bfd *output_bfd, char **error_message)
2442 /* If this is a relocatable link (output_bfd test tells us), just
2443 call the generic function. Any adjustment will be done at final
2445 if (output_bfd != NULL)
2446 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2447 input_section, output_bfd, error_message);
2449 /* Adjust the addend for sign extension of the low 16 bits.
2450 We won't actually be using the low 16 bits, so trashing them
2452 reloc_entry->addend += 0x8000;
2453 return bfd_reloc_continue;
2456 static bfd_reloc_status_type
2457 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2458 void *data, asection *input_section,
2459 bfd *output_bfd, char **error_message)
2461 if (output_bfd != NULL)
2462 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2463 input_section, output_bfd, error_message);
2465 if (strcmp (symbol->section->name, ".opd") == 0
2466 && (symbol->section->owner->flags & DYNAMIC) == 0)
2468 bfd_vma dest = opd_entry_value (symbol->section,
2469 symbol->value + reloc_entry->addend,
2471 if (dest != (bfd_vma) -1)
2472 reloc_entry->addend = dest - (symbol->value
2473 + symbol->section->output_section->vma
2474 + symbol->section->output_offset);
2476 return bfd_reloc_continue;
2479 static bfd_reloc_status_type
2480 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2481 void *data, asection *input_section,
2482 bfd *output_bfd, char **error_message)
2485 enum elf_ppc64_reloc_type r_type;
2486 bfd_size_type octets;
2487 /* Assume 'at' branch hints. */
2488 bfd_boolean is_isa_v2 = TRUE;
2490 /* If this is a relocatable link (output_bfd test tells us), just
2491 call the generic function. Any adjustment will be done at final
2493 if (output_bfd != NULL)
2494 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2495 input_section, output_bfd, error_message);
2497 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2498 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2499 insn &= ~(0x01 << 21);
2500 r_type = reloc_entry->howto->type;
2501 if (r_type == R_PPC64_ADDR14_BRTAKEN
2502 || r_type == R_PPC64_REL14_BRTAKEN)
2503 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2507 /* Set 'a' bit. This is 0b00010 in BO field for branch
2508 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2509 for branch on CTR insns (BO == 1a00t or 1a01t). */
2510 if ((insn & (0x14 << 21)) == (0x04 << 21))
2512 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2522 if (!bfd_is_com_section (symbol->section))
2523 target = symbol->value;
2524 target += symbol->section->output_section->vma;
2525 target += symbol->section->output_offset;
2526 target += reloc_entry->addend;
2528 from = (reloc_entry->address
2529 + input_section->output_offset
2530 + input_section->output_section->vma);
2532 /* Invert 'y' bit if not the default. */
2533 if ((bfd_signed_vma) (target - from) < 0)
2536 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2538 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2539 input_section, output_bfd, error_message);
2542 static bfd_reloc_status_type
2543 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2544 void *data, asection *input_section,
2545 bfd *output_bfd, char **error_message)
2547 /* If this is a relocatable link (output_bfd test tells us), just
2548 call the generic function. Any adjustment will be done at final
2550 if (output_bfd != NULL)
2551 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2552 input_section, output_bfd, error_message);
2554 /* Subtract the symbol section base address. */
2555 reloc_entry->addend -= symbol->section->output_section->vma;
2556 return bfd_reloc_continue;
2559 static bfd_reloc_status_type
2560 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2561 void *data, asection *input_section,
2562 bfd *output_bfd, char **error_message)
2564 /* If this is a relocatable link (output_bfd test tells us), just
2565 call the generic function. Any adjustment will be done at final
2567 if (output_bfd != NULL)
2568 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2569 input_section, output_bfd, error_message);
2571 /* Subtract the symbol section base address. */
2572 reloc_entry->addend -= symbol->section->output_section->vma;
2574 /* Adjust the addend for sign extension of the low 16 bits. */
2575 reloc_entry->addend += 0x8000;
2576 return bfd_reloc_continue;
2579 static bfd_reloc_status_type
2580 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2581 void *data, asection *input_section,
2582 bfd *output_bfd, char **error_message)
2586 /* If this is a relocatable link (output_bfd test tells us), just
2587 call the generic function. Any adjustment will be done at final
2589 if (output_bfd != NULL)
2590 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2591 input_section, output_bfd, error_message);
2593 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2595 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2597 /* Subtract the TOC base address. */
2598 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2599 return bfd_reloc_continue;
2602 static bfd_reloc_status_type
2603 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2604 void *data, asection *input_section,
2605 bfd *output_bfd, char **error_message)
2609 /* If this is a relocatable link (output_bfd test tells us), just
2610 call the generic function. Any adjustment will be done at final
2612 if (output_bfd != NULL)
2613 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2614 input_section, output_bfd, error_message);
2616 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2618 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2620 /* Subtract the TOC base address. */
2621 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2623 /* Adjust the addend for sign extension of the low 16 bits. */
2624 reloc_entry->addend += 0x8000;
2625 return bfd_reloc_continue;
2628 static bfd_reloc_status_type
2629 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2630 void *data, asection *input_section,
2631 bfd *output_bfd, char **error_message)
2634 bfd_size_type octets;
2636 /* If this is a relocatable link (output_bfd test tells us), just
2637 call the generic function. Any adjustment will be done at final
2639 if (output_bfd != NULL)
2640 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2641 input_section, output_bfd, error_message);
2643 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2645 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
2647 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2648 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2649 return bfd_reloc_ok;
2652 static bfd_reloc_status_type
2653 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2654 void *data, asection *input_section,
2655 bfd *output_bfd, char **error_message)
2657 /* If this is a relocatable link (output_bfd test tells us), just
2658 call the generic function. Any adjustment will be done at final
2660 if (output_bfd != NULL)
2661 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2662 input_section, output_bfd, error_message);
2664 if (error_message != NULL)
2666 static char buf[60];
2667 sprintf (buf, "generic linker can't handle %s",
2668 reloc_entry->howto->name);
2669 *error_message = buf;
2671 return bfd_reloc_dangerous;
2674 /* Track GOT entries needed for a given symbol. We might need more
2675 than one got entry per symbol. */
2678 struct got_entry *next;
2680 /* The symbol addend that we'll be placing in the GOT. */
2683 /* Unlike other ELF targets, we use separate GOT entries for the same
2684 symbol referenced from different input files. This is to support
2685 automatic multiple TOC/GOT sections, where the TOC base can vary
2686 from one input file to another. After partitioning into TOC groups
2687 we merge entries within the group.
2689 Point to the BFD owning this GOT entry. */
2692 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2693 TLS_TPREL or TLS_DTPREL for tls entries. */
2694 unsigned char tls_type;
2696 /* Non-zero if got.ent points to real entry. */
2697 unsigned char is_indirect;
2699 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2702 bfd_signed_vma refcount;
2704 struct got_entry *ent;
2708 /* The same for PLT. */
2711 struct plt_entry *next;
2717 bfd_signed_vma refcount;
2722 struct ppc64_elf_obj_tdata
2724 struct elf_obj_tdata elf;
2726 /* Shortcuts to dynamic linker sections. */
2730 /* Used during garbage collection. We attach global symbols defined
2731 on removed .opd entries to this section so that the sym is removed. */
2732 asection *deleted_section;
2734 /* TLS local dynamic got entry handling. Support for multiple GOT
2735 sections means we potentially need one of these for each input bfd. */
2736 struct got_entry tlsld_got;
2739 /* A copy of relocs before they are modified for --emit-relocs. */
2740 Elf_Internal_Rela *relocs;
2742 /* Section contents. */
2746 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2747 the reloc to be in the range -32768 to 32767. */
2748 unsigned int has_small_toc_reloc : 1;
2750 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2751 instruction not one we handle. */
2752 unsigned int unexpected_toc_insn : 1;
2755 #define ppc64_elf_tdata(bfd) \
2756 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2758 #define ppc64_tlsld_got(bfd) \
2759 (&ppc64_elf_tdata (bfd)->tlsld_got)
2761 #define is_ppc64_elf(bfd) \
2762 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2763 && elf_object_id (bfd) == PPC64_ELF_DATA)
2765 /* Override the generic function because we store some extras. */
2768 ppc64_elf_mkobject (bfd *abfd)
2770 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2774 /* Fix bad default arch selected for a 64 bit input bfd when the
2775 default is 32 bit. */
2778 ppc64_elf_object_p (bfd *abfd)
2780 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2782 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2784 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2786 /* Relies on arch after 32 bit default being 64 bit default. */
2787 abfd->arch_info = abfd->arch_info->next;
2788 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2794 /* Support for core dump NOTE sections. */
2797 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2799 size_t offset, size;
2801 if (note->descsz != 504)
2805 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2808 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
2814 /* Make a ".reg/999" section. */
2815 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2816 size, note->descpos + offset);
2820 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2822 if (note->descsz != 136)
2825 elf_tdata (abfd)->core->pid
2826 = bfd_get_32 (abfd, note->descdata + 24);
2827 elf_tdata (abfd)->core->program
2828 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2829 elf_tdata (abfd)->core->command
2830 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2836 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2849 va_start (ap, note_type);
2850 memset (data, 0, sizeof (data));
2851 strncpy (data + 40, va_arg (ap, const char *), 16);
2852 strncpy (data + 56, va_arg (ap, const char *), 80);
2854 return elfcore_write_note (abfd, buf, bufsiz,
2855 "CORE", note_type, data, sizeof (data));
2866 va_start (ap, note_type);
2867 memset (data, 0, 112);
2868 pid = va_arg (ap, long);
2869 bfd_put_32 (abfd, pid, data + 32);
2870 cursig = va_arg (ap, int);
2871 bfd_put_16 (abfd, cursig, data + 12);
2872 greg = va_arg (ap, const void *);
2873 memcpy (data + 112, greg, 384);
2874 memset (data + 496, 0, 8);
2876 return elfcore_write_note (abfd, buf, bufsiz,
2877 "CORE", note_type, data, sizeof (data));
2882 /* Add extra PPC sections. */
2884 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2886 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2887 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2888 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2889 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2890 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2891 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2892 { NULL, 0, 0, 0, 0 }
2895 enum _ppc64_sec_type {
2901 struct _ppc64_elf_section_data
2903 struct bfd_elf_section_data elf;
2907 /* An array with one entry for each opd function descriptor. */
2908 struct _opd_sec_data
2910 /* Points to the function code section for local opd entries. */
2911 asection **func_sec;
2913 /* After editing .opd, adjust references to opd local syms. */
2917 /* An array for toc sections, indexed by offset/8. */
2918 struct _toc_sec_data
2920 /* Specifies the relocation symbol index used at a given toc offset. */
2923 /* And the relocation addend. */
2928 enum _ppc64_sec_type sec_type:2;
2930 /* Flag set when small branches are detected. Used to
2931 select suitable defaults for the stub group size. */
2932 unsigned int has_14bit_branch:1;
2935 #define ppc64_elf_section_data(sec) \
2936 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2939 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2941 if (!sec->used_by_bfd)
2943 struct _ppc64_elf_section_data *sdata;
2944 bfd_size_type amt = sizeof (*sdata);
2946 sdata = bfd_zalloc (abfd, amt);
2949 sec->used_by_bfd = sdata;
2952 return _bfd_elf_new_section_hook (abfd, sec);
2955 static struct _opd_sec_data *
2956 get_opd_info (asection * sec)
2959 && ppc64_elf_section_data (sec) != NULL
2960 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2961 return &ppc64_elf_section_data (sec)->u.opd;
2966 abiversion (bfd *abfd)
2968 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
2972 set_abiversion (bfd *abfd, int ver)
2974 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
2975 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
2978 /* Parameters for the qsort hook. */
2979 static bfd_boolean synthetic_relocatable;
2981 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2984 compare_symbols (const void *ap, const void *bp)
2986 const asymbol *a = * (const asymbol **) ap;
2987 const asymbol *b = * (const asymbol **) bp;
2989 /* Section symbols first. */
2990 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2992 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2995 /* then .opd symbols. */
2996 if (strcmp (a->section->name, ".opd") == 0
2997 && strcmp (b->section->name, ".opd") != 0)
2999 if (strcmp (a->section->name, ".opd") != 0
3000 && strcmp (b->section->name, ".opd") == 0)
3003 /* then other code symbols. */
3004 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3005 == (SEC_CODE | SEC_ALLOC)
3006 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3007 != (SEC_CODE | SEC_ALLOC))
3010 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3011 != (SEC_CODE | SEC_ALLOC)
3012 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3013 == (SEC_CODE | SEC_ALLOC))
3016 if (synthetic_relocatable)
3018 if (a->section->id < b->section->id)
3021 if (a->section->id > b->section->id)
3025 if (a->value + a->section->vma < b->value + b->section->vma)
3028 if (a->value + a->section->vma > b->value + b->section->vma)
3031 /* For syms with the same value, prefer strong dynamic global function
3032 syms over other syms. */
3033 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3036 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3039 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3042 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3045 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3048 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3051 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3054 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3060 /* Search SYMS for a symbol of the given VALUE. */
3063 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
3071 mid = (lo + hi) >> 1;
3072 if (syms[mid]->value + syms[mid]->section->vma < value)
3074 else if (syms[mid]->value + syms[mid]->section->vma > value)
3084 mid = (lo + hi) >> 1;
3085 if (syms[mid]->section->id < id)
3087 else if (syms[mid]->section->id > id)
3089 else if (syms[mid]->value < value)
3091 else if (syms[mid]->value > value)
3101 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3103 bfd_vma vma = *(bfd_vma *) ptr;
3104 return ((section->flags & SEC_ALLOC) != 0
3105 && section->vma <= vma
3106 && vma < section->vma + section->size);
3109 /* Create synthetic symbols, effectively restoring "dot-symbol" function
3110 entry syms. Also generate @plt symbols for the glink branch table. */
3113 ppc64_elf_get_synthetic_symtab (bfd *abfd,
3114 long static_count, asymbol **static_syms,
3115 long dyn_count, asymbol **dyn_syms,
3122 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
3123 asection *opd = NULL;
3124 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
3126 int abi = abiversion (abfd);
3132 opd = bfd_get_section_by_name (abfd, ".opd");
3133 if (opd == NULL && abi == 1)
3137 symcount = static_count;
3139 symcount += dyn_count;
3143 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3147 if (!relocatable && static_count != 0 && dyn_count != 0)
3149 /* Use both symbol tables. */
3150 memcpy (syms, static_syms, static_count * sizeof (*syms));
3151 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3153 else if (!relocatable && static_count == 0)
3154 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3156 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3158 synthetic_relocatable = relocatable;
3159 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3161 if (!relocatable && symcount > 1)
3164 /* Trim duplicate syms, since we may have merged the normal and
3165 dynamic symbols. Actually, we only care about syms that have
3166 different values, so trim any with the same value. */
3167 for (i = 1, j = 1; i < symcount; ++i)
3168 if (syms[i - 1]->value + syms[i - 1]->section->vma
3169 != syms[i]->value + syms[i]->section->vma)
3170 syms[j++] = syms[i];
3175 if (strcmp (syms[i]->section->name, ".opd") == 0)
3179 for (; i < symcount; ++i)
3180 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3181 != (SEC_CODE | SEC_ALLOC))
3182 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3186 for (; i < symcount; ++i)
3187 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3191 for (; i < symcount; ++i)
3192 if (strcmp (syms[i]->section->name, ".opd") != 0)
3196 for (; i < symcount; ++i)
3197 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3198 != (SEC_CODE | SEC_ALLOC))
3206 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3211 if (opdsymend == secsymend)
3214 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3215 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3219 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3226 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3230 while (r < opd->relocation + relcount
3231 && r->address < syms[i]->value + opd->vma)
3234 if (r == opd->relocation + relcount)
3237 if (r->address != syms[i]->value + opd->vma)
3240 if (r->howto->type != R_PPC64_ADDR64)
3243 sym = *r->sym_ptr_ptr;
3244 if (!sym_exists_at (syms, opdsymend, symcount,
3245 sym->section->id, sym->value + r->addend))
3248 size += sizeof (asymbol);
3249 size += strlen (syms[i]->name) + 2;
3253 s = *ret = bfd_malloc (size);
3260 names = (char *) (s + count);
3262 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3266 while (r < opd->relocation + relcount
3267 && r->address < syms[i]->value + opd->vma)
3270 if (r == opd->relocation + relcount)
3273 if (r->address != syms[i]->value + opd->vma)
3276 if (r->howto->type != R_PPC64_ADDR64)
3279 sym = *r->sym_ptr_ptr;
3280 if (!sym_exists_at (syms, opdsymend, symcount,
3281 sym->section->id, sym->value + r->addend))
3286 s->flags |= BSF_SYNTHETIC;
3287 s->section = sym->section;
3288 s->value = sym->value + r->addend;
3291 len = strlen (syms[i]->name);
3292 memcpy (names, syms[i]->name, len + 1);
3294 /* Have udata.p point back to the original symbol this
3295 synthetic symbol was derived from. */
3296 s->udata.p = syms[i];
3303 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3304 bfd_byte *contents = NULL;
3307 bfd_vma glink_vma = 0, resolv_vma = 0;
3308 asection *dynamic, *glink = NULL, *relplt = NULL;
3311 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
3313 free_contents_and_exit:
3321 for (i = secsymend; i < opdsymend; ++i)
3325 /* Ignore bogus symbols. */
3326 if (syms[i]->value > opd->size - 8)
3329 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3330 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3333 size += sizeof (asymbol);
3334 size += strlen (syms[i]->name) + 2;
3338 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3340 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3342 bfd_byte *dynbuf, *extdyn, *extdynend;
3344 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3346 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3347 goto free_contents_and_exit;
3349 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3350 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3353 extdynend = extdyn + dynamic->size;
3354 for (; extdyn < extdynend; extdyn += extdynsize)
3356 Elf_Internal_Dyn dyn;
3357 (*swap_dyn_in) (abfd, extdyn, &dyn);
3359 if (dyn.d_tag == DT_NULL)
3362 if (dyn.d_tag == DT_PPC64_GLINK)
3364 /* The first glink stub starts at offset 32; see
3365 comment in ppc64_elf_finish_dynamic_sections. */
3366 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
3367 /* The .glink section usually does not survive the final
3368 link; search for the section (usually .text) where the
3369 glink stubs now reside. */
3370 glink = bfd_sections_find_if (abfd, section_covers_vma,
3381 /* Determine __glink trampoline by reading the relative branch
3382 from the first glink stub. */
3384 unsigned int off = 0;
3386 while (bfd_get_section_contents (abfd, glink, buf,
3387 glink_vma + off - glink->vma, 4))
3389 unsigned int insn = bfd_get_32 (abfd, buf);
3391 if ((insn & ~0x3fffffc) == 0)
3393 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3402 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3404 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3407 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3408 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3409 goto free_contents_and_exit;
3411 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3412 size += plt_count * sizeof (asymbol);
3414 p = relplt->relocation;
3415 for (i = 0; i < plt_count; i++, p++)
3417 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3419 size += sizeof ("+0x") - 1 + 16;
3424 s = *ret = bfd_malloc (size);
3426 goto free_contents_and_exit;
3428 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3430 for (i = secsymend; i < opdsymend; ++i)
3434 if (syms[i]->value > opd->size - 8)
3437 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3438 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3442 asection *sec = abfd->sections;
3449 long mid = (lo + hi) >> 1;
3450 if (syms[mid]->section->vma < ent)
3452 else if (syms[mid]->section->vma > ent)
3456 sec = syms[mid]->section;
3461 if (lo >= hi && lo > codesecsym)
3462 sec = syms[lo - 1]->section;
3464 for (; sec != NULL; sec = sec->next)
3468 /* SEC_LOAD may not be set if SEC is from a separate debug
3470 if ((sec->flags & SEC_ALLOC) == 0)
3472 if ((sec->flags & SEC_CODE) != 0)
3475 s->flags |= BSF_SYNTHETIC;
3476 s->value = ent - s->section->vma;
3479 len = strlen (syms[i]->name);
3480 memcpy (names, syms[i]->name, len + 1);
3482 /* Have udata.p point back to the original symbol this
3483 synthetic symbol was derived from. */
3484 s->udata.p = syms[i];
3490 if (glink != NULL && relplt != NULL)
3494 /* Add a symbol for the main glink trampoline. */
3495 memset (s, 0, sizeof *s);
3497 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3499 s->value = resolv_vma - glink->vma;
3501 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3502 names += sizeof ("__glink_PLTresolve");
3507 /* FIXME: It would be very much nicer to put sym@plt on the
3508 stub rather than on the glink branch table entry. The
3509 objdump disassembler would then use a sensible symbol
3510 name on plt calls. The difficulty in doing so is
3511 a) finding the stubs, and,
3512 b) matching stubs against plt entries, and,
3513 c) there can be multiple stubs for a given plt entry.
3515 Solving (a) could be done by code scanning, but older
3516 ppc64 binaries used different stubs to current code.
3517 (b) is the tricky one since you need to known the toc
3518 pointer for at least one function that uses a pic stub to
3519 be able to calculate the plt address referenced.
3520 (c) means gdb would need to set multiple breakpoints (or
3521 find the glink branch itself) when setting breakpoints
3522 for pending shared library loads. */
3523 p = relplt->relocation;
3524 for (i = 0; i < plt_count; i++, p++)
3528 *s = **p->sym_ptr_ptr;
3529 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3530 we are defining a symbol, ensure one of them is set. */
3531 if ((s->flags & BSF_LOCAL) == 0)
3532 s->flags |= BSF_GLOBAL;
3533 s->flags |= BSF_SYNTHETIC;
3535 s->value = glink_vma - glink->vma;
3538 len = strlen ((*p->sym_ptr_ptr)->name);
3539 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3543 memcpy (names, "+0x", sizeof ("+0x") - 1);
3544 names += sizeof ("+0x") - 1;
3545 bfd_sprintf_vma (abfd, names, p->addend);
3546 names += strlen (names);
3548 memcpy (names, "@plt", sizeof ("@plt"));
3549 names += sizeof ("@plt");
3569 /* The following functions are specific to the ELF linker, while
3570 functions above are used generally. Those named ppc64_elf_* are
3571 called by the main ELF linker code. They appear in this file more
3572 or less in the order in which they are called. eg.
3573 ppc64_elf_check_relocs is called early in the link process,
3574 ppc64_elf_finish_dynamic_sections is one of the last functions
3577 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3578 functions have both a function code symbol and a function descriptor
3579 symbol. A call to foo in a relocatable object file looks like:
3586 The function definition in another object file might be:
3590 . .quad .TOC.@tocbase
3596 When the linker resolves the call during a static link, the branch
3597 unsurprisingly just goes to .foo and the .opd information is unused.
3598 If the function definition is in a shared library, things are a little
3599 different: The call goes via a plt call stub, the opd information gets
3600 copied to the plt, and the linker patches the nop.
3608 . std 2,40(1) # in practice, the call stub
3609 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3610 . addi 11,11,Lfoo@toc@l # this is the general idea
3618 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3620 The "reloc ()" notation is supposed to indicate that the linker emits
3621 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3624 What are the difficulties here? Well, firstly, the relocations
3625 examined by the linker in check_relocs are against the function code
3626 sym .foo, while the dynamic relocation in the plt is emitted against
3627 the function descriptor symbol, foo. Somewhere along the line, we need
3628 to carefully copy dynamic link information from one symbol to the other.
3629 Secondly, the generic part of the elf linker will make .foo a dynamic
3630 symbol as is normal for most other backends. We need foo dynamic
3631 instead, at least for an application final link. However, when
3632 creating a shared library containing foo, we need to have both symbols
3633 dynamic so that references to .foo are satisfied during the early
3634 stages of linking. Otherwise the linker might decide to pull in a
3635 definition from some other object, eg. a static library.
3637 Update: As of August 2004, we support a new convention. Function
3638 calls may use the function descriptor symbol, ie. "bl foo". This
3639 behaves exactly as "bl .foo". */
3641 /* Of those relocs that might be copied as dynamic relocs, this function
3642 selects those that must be copied when linking a shared library,
3643 even when the symbol is local. */
3646 must_be_dyn_reloc (struct bfd_link_info *info,
3647 enum elf_ppc64_reloc_type r_type)
3659 case R_PPC64_TPREL16:
3660 case R_PPC64_TPREL16_LO:
3661 case R_PPC64_TPREL16_HI:
3662 case R_PPC64_TPREL16_HA:
3663 case R_PPC64_TPREL16_DS:
3664 case R_PPC64_TPREL16_LO_DS:
3665 case R_PPC64_TPREL16_HIGH:
3666 case R_PPC64_TPREL16_HIGHA:
3667 case R_PPC64_TPREL16_HIGHER:
3668 case R_PPC64_TPREL16_HIGHERA:
3669 case R_PPC64_TPREL16_HIGHEST:
3670 case R_PPC64_TPREL16_HIGHESTA:
3671 case R_PPC64_TPREL64:
3672 return !info->executable;
3676 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3677 copying dynamic variables from a shared lib into an app's dynbss
3678 section, and instead use a dynamic relocation to point into the
3679 shared lib. With code that gcc generates, it's vital that this be
3680 enabled; In the PowerPC64 ABI, the address of a function is actually
3681 the address of a function descriptor, which resides in the .opd
3682 section. gcc uses the descriptor directly rather than going via the
3683 GOT as some other ABI's do, which means that initialized function
3684 pointers must reference the descriptor. Thus, a function pointer
3685 initialized to the address of a function in a shared library will
3686 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3687 redefines the function descriptor symbol to point to the copy. This
3688 presents a problem as a plt entry for that function is also
3689 initialized from the function descriptor symbol and the copy reloc
3690 may not be initialized first. */
3691 #define ELIMINATE_COPY_RELOCS 1
3693 /* Section name for stubs is the associated section name plus this
3695 #define STUB_SUFFIX ".stub"
3698 ppc_stub_long_branch:
3699 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3700 destination, but a 24 bit branch in a stub section will reach.
3703 ppc_stub_plt_branch:
3704 Similar to the above, but a 24 bit branch in the stub section won't
3705 reach its destination.
3706 . addis %r11,%r2,xxx@toc@ha
3707 . ld %r12,xxx@toc@l(%r11)
3712 Used to call a function in a shared library. If it so happens that
3713 the plt entry referenced crosses a 64k boundary, then an extra
3714 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
3716 . addis %r11,%r2,xxx@toc@ha
3717 . ld %r12,xxx+0@toc@l(%r11)
3719 . ld %r2,xxx+8@toc@l(%r11)
3720 . ld %r11,xxx+16@toc@l(%r11)
3723 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3724 code to adjust the value and save r2 to support multiple toc sections.
3725 A ppc_stub_long_branch with an r2 offset looks like:
3727 . addis %r2,%r2,off@ha
3728 . addi %r2,%r2,off@l
3731 A ppc_stub_plt_branch with an r2 offset looks like:
3733 . addis %r11,%r2,xxx@toc@ha
3734 . ld %r12,xxx@toc@l(%r11)
3735 . addis %r2,%r2,off@ha
3736 . addi %r2,%r2,off@l
3740 In cases where the "addis" instruction would add zero, the "addis" is
3741 omitted and following instructions modified slightly in some cases.
3744 enum ppc_stub_type {
3746 ppc_stub_long_branch,
3747 ppc_stub_long_branch_r2off,
3748 ppc_stub_plt_branch,
3749 ppc_stub_plt_branch_r2off,
3751 ppc_stub_plt_call_r2save
3754 struct ppc_stub_hash_entry {
3756 /* Base hash table entry structure. */
3757 struct bfd_hash_entry root;
3759 enum ppc_stub_type stub_type;
3761 /* The stub section. */
3764 /* Offset within stub_sec of the beginning of this stub. */
3765 bfd_vma stub_offset;
3767 /* Given the symbol's value and its section we can determine its final
3768 value when building the stubs (so the stub knows where to jump. */
3769 bfd_vma target_value;
3770 asection *target_section;
3772 /* The symbol table entry, if any, that this was derived from. */
3773 struct ppc_link_hash_entry *h;
3774 struct plt_entry *plt_ent;
3776 /* Where this stub is being called from, or, in the case of combined
3777 stub sections, the first input section in the group. */
3780 /* Symbol st_other. */
3781 unsigned char other;
3784 struct ppc_branch_hash_entry {
3786 /* Base hash table entry structure. */
3787 struct bfd_hash_entry root;
3789 /* Offset within branch lookup table. */
3790 unsigned int offset;
3792 /* Generation marker. */
3796 /* Used to track dynamic relocations for local symbols. */
3797 struct ppc_dyn_relocs
3799 struct ppc_dyn_relocs *next;
3801 /* The input section of the reloc. */
3804 /* Total number of relocs copied for the input section. */
3805 unsigned int count : 31;
3807 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3808 unsigned int ifunc : 1;
3811 struct ppc_link_hash_entry
3813 struct elf_link_hash_entry elf;
3816 /* A pointer to the most recently used stub hash entry against this
3818 struct ppc_stub_hash_entry *stub_cache;
3820 /* A pointer to the next symbol starting with a '.' */
3821 struct ppc_link_hash_entry *next_dot_sym;
3824 /* Track dynamic relocs copied for this symbol. */
3825 struct elf_dyn_relocs *dyn_relocs;
3827 /* Link between function code and descriptor symbols. */
3828 struct ppc_link_hash_entry *oh;
3830 /* Flag function code and descriptor symbols. */
3831 unsigned int is_func:1;
3832 unsigned int is_func_descriptor:1;
3833 unsigned int fake:1;
3835 /* Whether global opd/toc sym has been adjusted or not.
3836 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3837 should be set for all globals defined in any opd/toc section. */
3838 unsigned int adjust_done:1;
3840 /* Set if we twiddled this symbol to weak at some stage. */
3841 unsigned int was_undefined:1;
3843 /* Contexts in which symbol is used in the GOT (or TOC).
3844 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3845 corresponding relocs are encountered during check_relocs.
3846 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3847 indicate the corresponding GOT entry type is not needed.
3848 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3849 a TPREL one. We use a separate flag rather than setting TPREL
3850 just for convenience in distinguishing the two cases. */
3851 #define TLS_GD 1 /* GD reloc. */
3852 #define TLS_LD 2 /* LD reloc. */
3853 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3854 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3855 #define TLS_TLS 16 /* Any TLS reloc. */
3856 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3857 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3858 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3859 unsigned char tls_mask;
3862 /* ppc64 ELF linker hash table. */
3864 struct ppc_link_hash_table
3866 struct elf_link_hash_table elf;
3868 /* The stub hash table. */
3869 struct bfd_hash_table stub_hash_table;
3871 /* Another hash table for plt_branch stubs. */
3872 struct bfd_hash_table branch_hash_table;
3874 /* Hash table for function prologue tocsave. */
3875 htab_t tocsave_htab;
3877 /* Linker stub bfd. */
3880 /* Linker call-backs. */
3881 asection * (*add_stub_section) (const char *, asection *);
3882 void (*layout_sections_again) (void);
3884 /* Array to keep track of which stub sections have been created, and
3885 information on stub grouping. */
3887 /* This is the section to which stubs in the group will be attached. */
3889 /* The stub section. */
3891 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3895 /* Temp used when calculating TOC pointers. */
3898 asection *toc_first_sec;
3900 /* Highest input section id. */
3903 /* Highest output section index. */
3906 /* Used when adding symbols. */
3907 struct ppc_link_hash_entry *dot_syms;
3909 /* List of input sections for each output section. */
3910 asection **input_list;
3912 /* Shortcuts to get to dynamic linker sections. */
3919 asection *glink_eh_frame;
3921 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3922 struct ppc_link_hash_entry *tls_get_addr;
3923 struct ppc_link_hash_entry *tls_get_addr_fd;
3925 /* The size of reliplt used by got entry relocs. */
3926 bfd_size_type got_reli_size;
3929 unsigned long stub_count[ppc_stub_plt_call_r2save];
3931 /* Number of stubs against global syms. */
3932 unsigned long stub_globals;
3934 /* Alignment of PLT call stubs. */
3935 unsigned int plt_stub_align:4;
3937 /* Set if we're linking code with function descriptors. */
3938 unsigned int opd_abi:1;
3940 /* Set if PLT call stubs should load r11. */
3941 unsigned int plt_static_chain:1;
3943 /* Set if PLT call stubs need a read-read barrier. */
3944 unsigned int plt_thread_safe:1;
3946 /* Set if we should emit symbols for stubs. */
3947 unsigned int emit_stub_syms:1;
3949 /* Set if __tls_get_addr optimization should not be done. */
3950 unsigned int no_tls_get_addr_opt:1;
3952 /* Support for multiple toc sections. */
3953 unsigned int do_multi_toc:1;
3954 unsigned int multi_toc_needed:1;
3955 unsigned int second_toc_pass:1;
3956 unsigned int do_toc_opt:1;
3959 unsigned int stub_error:1;
3961 /* Temp used by ppc64_elf_process_dot_syms. */
3962 unsigned int twiddled_syms:1;
3964 /* Incremented every time we size stubs. */
3965 unsigned int stub_iteration;
3967 /* Small local sym cache. */
3968 struct sym_cache sym_cache;
3971 /* Rename some of the generic section flags to better document how they
3974 /* Nonzero if this section has TLS related relocations. */
3975 #define has_tls_reloc sec_flg0
3977 /* Nonzero if this section has a call to __tls_get_addr. */
3978 #define has_tls_get_addr_call sec_flg1
3980 /* Nonzero if this section has any toc or got relocs. */
3981 #define has_toc_reloc sec_flg2
3983 /* Nonzero if this section has a call to another section that uses
3985 #define makes_toc_func_call sec_flg3
3987 /* Recursion protection when determining above flag. */
3988 #define call_check_in_progress sec_flg4
3989 #define call_check_done sec_flg5
3991 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3993 #define ppc_hash_table(p) \
3994 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3995 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3997 #define ppc_stub_hash_lookup(table, string, create, copy) \
3998 ((struct ppc_stub_hash_entry *) \
3999 bfd_hash_lookup ((table), (string), (create), (copy)))
4001 #define ppc_branch_hash_lookup(table, string, create, copy) \
4002 ((struct ppc_branch_hash_entry *) \
4003 bfd_hash_lookup ((table), (string), (create), (copy)))
4005 /* Create an entry in the stub hash table. */
4007 static struct bfd_hash_entry *
4008 stub_hash_newfunc (struct bfd_hash_entry *entry,
4009 struct bfd_hash_table *table,
4012 /* Allocate the structure if it has not already been allocated by a
4016 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4021 /* Call the allocation method of the superclass. */
4022 entry = bfd_hash_newfunc (entry, table, string);
4025 struct ppc_stub_hash_entry *eh;
4027 /* Initialize the local fields. */
4028 eh = (struct ppc_stub_hash_entry *) entry;
4029 eh->stub_type = ppc_stub_none;
4030 eh->stub_sec = NULL;
4031 eh->stub_offset = 0;
4032 eh->target_value = 0;
4033 eh->target_section = NULL;
4043 /* Create an entry in the branch hash table. */
4045 static struct bfd_hash_entry *
4046 branch_hash_newfunc (struct bfd_hash_entry *entry,
4047 struct bfd_hash_table *table,
4050 /* Allocate the structure if it has not already been allocated by a
4054 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4059 /* Call the allocation method of the superclass. */
4060 entry = bfd_hash_newfunc (entry, table, string);
4063 struct ppc_branch_hash_entry *eh;
4065 /* Initialize the local fields. */
4066 eh = (struct ppc_branch_hash_entry *) entry;
4074 /* Create an entry in a ppc64 ELF linker hash table. */
4076 static struct bfd_hash_entry *
4077 link_hash_newfunc (struct bfd_hash_entry *entry,
4078 struct bfd_hash_table *table,
4081 /* Allocate the structure if it has not already been allocated by a
4085 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4090 /* Call the allocation method of the superclass. */
4091 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4094 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4096 memset (&eh->u.stub_cache, 0,
4097 (sizeof (struct ppc_link_hash_entry)
4098 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4100 /* When making function calls, old ABI code references function entry
4101 points (dot symbols), while new ABI code references the function
4102 descriptor symbol. We need to make any combination of reference and
4103 definition work together, without breaking archive linking.
4105 For a defined function "foo" and an undefined call to "bar":
4106 An old object defines "foo" and ".foo", references ".bar" (possibly
4108 A new object defines "foo" and references "bar".
4110 A new object thus has no problem with its undefined symbols being
4111 satisfied by definitions in an old object. On the other hand, the
4112 old object won't have ".bar" satisfied by a new object.
4114 Keep a list of newly added dot-symbols. */
4116 if (string[0] == '.')
4118 struct ppc_link_hash_table *htab;
4120 htab = (struct ppc_link_hash_table *) table;
4121 eh->u.next_dot_sym = htab->dot_syms;
4122 htab->dot_syms = eh;
4129 struct tocsave_entry {
4135 tocsave_htab_hash (const void *p)
4137 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4138 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4142 tocsave_htab_eq (const void *p1, const void *p2)
4144 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4145 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4146 return e1->sec == e2->sec && e1->offset == e2->offset;
4149 /* Create a ppc64 ELF linker hash table. */
4151 static struct bfd_link_hash_table *
4152 ppc64_elf_link_hash_table_create (bfd *abfd)
4154 struct ppc_link_hash_table *htab;
4155 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4157 htab = bfd_zmalloc (amt);
4161 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4162 sizeof (struct ppc_link_hash_entry),
4169 /* Init the stub hash table too. */
4170 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4171 sizeof (struct ppc_stub_hash_entry)))
4174 /* And the branch hash table. */
4175 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4176 sizeof (struct ppc_branch_hash_entry)))
4179 htab->tocsave_htab = htab_try_create (1024,
4183 if (htab->tocsave_htab == NULL)
4186 /* Initializing two fields of the union is just cosmetic. We really
4187 only care about glist, but when compiled on a 32-bit host the
4188 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4189 debugger inspection of these fields look nicer. */
4190 htab->elf.init_got_refcount.refcount = 0;
4191 htab->elf.init_got_refcount.glist = NULL;
4192 htab->elf.init_plt_refcount.refcount = 0;
4193 htab->elf.init_plt_refcount.glist = NULL;
4194 htab->elf.init_got_offset.offset = 0;
4195 htab->elf.init_got_offset.glist = NULL;
4196 htab->elf.init_plt_offset.offset = 0;
4197 htab->elf.init_plt_offset.glist = NULL;
4199 return &htab->elf.root;
4202 /* Free the derived linker hash table. */
4205 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4207 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4209 bfd_hash_table_free (&htab->stub_hash_table);
4210 bfd_hash_table_free (&htab->branch_hash_table);
4211 if (htab->tocsave_htab)
4212 htab_delete (htab->tocsave_htab);
4213 _bfd_elf_link_hash_table_free (hash);
4216 /* Create sections for linker generated code. */
4219 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4221 struct ppc_link_hash_table *htab;
4224 htab = ppc_hash_table (info);
4226 /* Create .sfpr for code to save and restore fp regs. */
4227 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4228 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4229 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4231 if (htab->sfpr == NULL
4232 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4235 /* Create .glink for lazy dynamic linking support. */
4236 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4238 if (htab->glink == NULL
4239 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4242 if (!info->no_ld_generated_unwind_info)
4244 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4245 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4246 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4249 if (htab->glink_eh_frame == NULL
4250 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4254 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4255 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4256 if (htab->elf.iplt == NULL
4257 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
4260 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4261 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4263 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4264 if (htab->elf.irelplt == NULL
4265 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
4268 /* Create branch lookup table for plt_branch stubs. */
4269 flags = (SEC_ALLOC | SEC_LOAD
4270 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4271 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4273 if (htab->brlt == NULL
4274 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4280 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4281 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4282 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4285 if (htab->relbrlt == NULL
4286 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4292 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4295 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4297 struct ppc_link_hash_table *htab;
4299 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4301 /* Always hook our dynamic sections into the first bfd, which is the
4302 linker created stub bfd. This ensures that the GOT header is at
4303 the start of the output TOC section. */
4304 htab = ppc_hash_table (info);
4307 htab->stub_bfd = abfd;
4308 htab->elf.dynobj = abfd;
4310 if (info->relocatable)
4313 return create_linkage_sections (htab->elf.dynobj, info);
4316 /* Build a name for an entry in the stub hash table. */
4319 ppc_stub_name (const asection *input_section,
4320 const asection *sym_sec,
4321 const struct ppc_link_hash_entry *h,
4322 const Elf_Internal_Rela *rel)
4327 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4328 offsets from a sym as a branch target? In fact, we could
4329 probably assume the addend is always zero. */
4330 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4334 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4335 stub_name = bfd_malloc (len);
4336 if (stub_name == NULL)
4339 len = sprintf (stub_name, "%08x.%s+%x",
4340 input_section->id & 0xffffffff,
4341 h->elf.root.root.string,
4342 (int) rel->r_addend & 0xffffffff);
4346 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4347 stub_name = bfd_malloc (len);
4348 if (stub_name == NULL)
4351 len = sprintf (stub_name, "%08x.%x:%x+%x",
4352 input_section->id & 0xffffffff,
4353 sym_sec->id & 0xffffffff,
4354 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4355 (int) rel->r_addend & 0xffffffff);
4357 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4358 stub_name[len - 2] = 0;
4362 /* Look up an entry in the stub hash. Stub entries are cached because
4363 creating the stub name takes a bit of time. */
4365 static struct ppc_stub_hash_entry *
4366 ppc_get_stub_entry (const asection *input_section,
4367 const asection *sym_sec,
4368 struct ppc_link_hash_entry *h,
4369 const Elf_Internal_Rela *rel,
4370 struct ppc_link_hash_table *htab)
4372 struct ppc_stub_hash_entry *stub_entry;
4373 const asection *id_sec;
4375 /* If this input section is part of a group of sections sharing one
4376 stub section, then use the id of the first section in the group.
4377 Stub names need to include a section id, as there may well be
4378 more than one stub used to reach say, printf, and we need to
4379 distinguish between them. */
4380 id_sec = htab->stub_group[input_section->id].link_sec;
4382 if (h != NULL && h->u.stub_cache != NULL
4383 && h->u.stub_cache->h == h
4384 && h->u.stub_cache->id_sec == id_sec)
4386 stub_entry = h->u.stub_cache;
4392 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4393 if (stub_name == NULL)
4396 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4397 stub_name, FALSE, FALSE);
4399 h->u.stub_cache = stub_entry;
4407 /* Add a new stub entry to the stub hash. Not all fields of the new
4408 stub entry are initialised. */
4410 static struct ppc_stub_hash_entry *
4411 ppc_add_stub (const char *stub_name,
4413 struct bfd_link_info *info)
4415 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4418 struct ppc_stub_hash_entry *stub_entry;
4420 link_sec = htab->stub_group[section->id].link_sec;
4421 stub_sec = htab->stub_group[section->id].stub_sec;
4422 if (stub_sec == NULL)
4424 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4425 if (stub_sec == NULL)
4431 namelen = strlen (link_sec->name);
4432 len = namelen + sizeof (STUB_SUFFIX);
4433 s_name = bfd_alloc (htab->stub_bfd, len);
4437 memcpy (s_name, link_sec->name, namelen);
4438 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4439 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4440 if (stub_sec == NULL)
4442 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4444 htab->stub_group[section->id].stub_sec = stub_sec;
4447 /* Enter this entry into the linker stub hash table. */
4448 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4450 if (stub_entry == NULL)
4452 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4453 section->owner, stub_name);
4457 stub_entry->stub_sec = stub_sec;
4458 stub_entry->stub_offset = 0;
4459 stub_entry->id_sec = link_sec;
4463 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4464 not already done. */
4467 create_got_section (bfd *abfd, struct bfd_link_info *info)
4469 asection *got, *relgot;
4471 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4473 if (!is_ppc64_elf (abfd))
4479 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4482 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4483 | SEC_LINKER_CREATED);
4485 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4487 || !bfd_set_section_alignment (abfd, got, 3))
4490 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4491 flags | SEC_READONLY);
4493 || ! bfd_set_section_alignment (abfd, relgot, 3))
4496 ppc64_elf_tdata (abfd)->got = got;
4497 ppc64_elf_tdata (abfd)->relgot = relgot;
4501 /* Create the dynamic sections, and set up shortcuts. */
4504 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4506 struct ppc_link_hash_table *htab;
4508 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4511 htab = ppc_hash_table (info);
4515 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4517 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4519 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4520 || (!info->shared && !htab->relbss))
4526 /* Follow indirect and warning symbol links. */
4528 static inline struct bfd_link_hash_entry *
4529 follow_link (struct bfd_link_hash_entry *h)
4531 while (h->type == bfd_link_hash_indirect
4532 || h->type == bfd_link_hash_warning)
4537 static inline struct elf_link_hash_entry *
4538 elf_follow_link (struct elf_link_hash_entry *h)
4540 return (struct elf_link_hash_entry *) follow_link (&h->root);
4543 static inline struct ppc_link_hash_entry *
4544 ppc_follow_link (struct ppc_link_hash_entry *h)
4546 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4549 /* Merge PLT info on FROM with that on TO. */
4552 move_plt_plist (struct ppc_link_hash_entry *from,
4553 struct ppc_link_hash_entry *to)
4555 if (from->elf.plt.plist != NULL)
4557 if (to->elf.plt.plist != NULL)
4559 struct plt_entry **entp;
4560 struct plt_entry *ent;
4562 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4564 struct plt_entry *dent;
4566 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4567 if (dent->addend == ent->addend)
4569 dent->plt.refcount += ent->plt.refcount;
4576 *entp = to->elf.plt.plist;
4579 to->elf.plt.plist = from->elf.plt.plist;
4580 from->elf.plt.plist = NULL;
4584 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4587 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4588 struct elf_link_hash_entry *dir,
4589 struct elf_link_hash_entry *ind)
4591 struct ppc_link_hash_entry *edir, *eind;
4593 edir = (struct ppc_link_hash_entry *) dir;
4594 eind = (struct ppc_link_hash_entry *) ind;
4596 edir->is_func |= eind->is_func;
4597 edir->is_func_descriptor |= eind->is_func_descriptor;
4598 edir->tls_mask |= eind->tls_mask;
4599 if (eind->oh != NULL)
4600 edir->oh = ppc_follow_link (eind->oh);
4602 /* If called to transfer flags for a weakdef during processing
4603 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4604 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4605 if (!(ELIMINATE_COPY_RELOCS
4606 && eind->elf.root.type != bfd_link_hash_indirect
4607 && edir->elf.dynamic_adjusted))
4608 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4610 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4611 edir->elf.ref_regular |= eind->elf.ref_regular;
4612 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4613 edir->elf.needs_plt |= eind->elf.needs_plt;
4614 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4616 /* Copy over any dynamic relocs we may have on the indirect sym. */
4617 if (eind->dyn_relocs != NULL)
4619 if (edir->dyn_relocs != NULL)
4621 struct elf_dyn_relocs **pp;
4622 struct elf_dyn_relocs *p;
4624 /* Add reloc counts against the indirect sym to the direct sym
4625 list. Merge any entries against the same section. */
4626 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4628 struct elf_dyn_relocs *q;
4630 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4631 if (q->sec == p->sec)
4633 q->pc_count += p->pc_count;
4634 q->count += p->count;
4641 *pp = edir->dyn_relocs;
4644 edir->dyn_relocs = eind->dyn_relocs;
4645 eind->dyn_relocs = NULL;
4648 /* If we were called to copy over info for a weak sym, that's all.
4649 You might think dyn_relocs need not be copied over; After all,
4650 both syms will be dynamic or both non-dynamic so we're just
4651 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4652 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4653 dyn_relocs in read-only sections, and it does so on what is the
4655 if (eind->elf.root.type != bfd_link_hash_indirect)
4658 /* Copy over got entries that we may have already seen to the
4659 symbol which just became indirect. */
4660 if (eind->elf.got.glist != NULL)
4662 if (edir->elf.got.glist != NULL)
4664 struct got_entry **entp;
4665 struct got_entry *ent;
4667 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4669 struct got_entry *dent;
4671 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4672 if (dent->addend == ent->addend
4673 && dent->owner == ent->owner
4674 && dent->tls_type == ent->tls_type)
4676 dent->got.refcount += ent->got.refcount;
4683 *entp = edir->elf.got.glist;
4686 edir->elf.got.glist = eind->elf.got.glist;
4687 eind->elf.got.glist = NULL;
4690 /* And plt entries. */
4691 move_plt_plist (eind, edir);
4693 if (eind->elf.dynindx != -1)
4695 if (edir->elf.dynindx != -1)
4696 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4697 edir->elf.dynstr_index);
4698 edir->elf.dynindx = eind->elf.dynindx;
4699 edir->elf.dynstr_index = eind->elf.dynstr_index;
4700 eind->elf.dynindx = -1;
4701 eind->elf.dynstr_index = 0;
4705 /* Find the function descriptor hash entry from the given function code
4706 hash entry FH. Link the entries via their OH fields. */
4708 static struct ppc_link_hash_entry *
4709 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4711 struct ppc_link_hash_entry *fdh = fh->oh;
4715 const char *fd_name = fh->elf.root.root.string + 1;
4717 fdh = (struct ppc_link_hash_entry *)
4718 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4722 fdh->is_func_descriptor = 1;
4728 return ppc_follow_link (fdh);
4731 /* Make a fake function descriptor sym for the code sym FH. */
4733 static struct ppc_link_hash_entry *
4734 make_fdh (struct bfd_link_info *info,
4735 struct ppc_link_hash_entry *fh)
4739 struct bfd_link_hash_entry *bh;
4740 struct ppc_link_hash_entry *fdh;
4742 abfd = fh->elf.root.u.undef.abfd;
4743 newsym = bfd_make_empty_symbol (abfd);
4744 newsym->name = fh->elf.root.root.string + 1;
4745 newsym->section = bfd_und_section_ptr;
4747 newsym->flags = BSF_WEAK;
4750 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4751 newsym->flags, newsym->section,
4752 newsym->value, NULL, FALSE, FALSE,
4756 fdh = (struct ppc_link_hash_entry *) bh;
4757 fdh->elf.non_elf = 0;
4759 fdh->is_func_descriptor = 1;
4766 /* Fix function descriptor symbols defined in .opd sections to be
4770 ppc64_elf_add_symbol_hook (bfd *ibfd,
4771 struct bfd_link_info *info,
4772 Elf_Internal_Sym *isym,
4774 flagword *flags ATTRIBUTE_UNUSED,
4776 bfd_vma *value ATTRIBUTE_UNUSED)
4778 if ((ibfd->flags & DYNAMIC) == 0
4779 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4780 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4782 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4784 if ((ibfd->flags & DYNAMIC) == 0)
4785 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4787 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4789 else if (*sec != NULL
4790 && strcmp ((*sec)->name, ".opd") == 0)
4791 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4793 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4795 if (abiversion (ibfd) == 0)
4796 set_abiversion (ibfd, 2);
4797 else if (abiversion (ibfd) == 1)
4799 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4800 " for ABI version 1\n"), name);
4801 bfd_set_error (bfd_error_bad_value);
4809 /* Merge non-visibility st_other attributes: local entry point. */
4812 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4813 const Elf_Internal_Sym *isym,
4814 bfd_boolean definition,
4815 bfd_boolean dynamic)
4817 if (definition && !dynamic)
4818 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4819 | ELF_ST_VISIBILITY (h->other));
4822 /* This function makes an old ABI object reference to ".bar" cause the
4823 inclusion of a new ABI object archive that defines "bar".
4824 NAME is a symbol defined in an archive. Return a symbol in the hash
4825 table that might be satisfied by the archive symbols. */
4827 static struct elf_link_hash_entry *
4828 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4829 struct bfd_link_info *info,
4832 struct elf_link_hash_entry *h;
4836 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4838 /* Don't return this sym if it is a fake function descriptor
4839 created by add_symbol_adjust. */
4840 && !(h->root.type == bfd_link_hash_undefweak
4841 && ((struct ppc_link_hash_entry *) h)->fake))
4847 len = strlen (name);
4848 dot_name = bfd_alloc (abfd, len + 2);
4849 if (dot_name == NULL)
4850 return (struct elf_link_hash_entry *) 0 - 1;
4852 memcpy (dot_name + 1, name, len + 1);
4853 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4854 bfd_release (abfd, dot_name);
4858 /* This function satisfies all old ABI object references to ".bar" if a
4859 new ABI object defines "bar". Well, at least, undefined dot symbols
4860 are made weak. This stops later archive searches from including an
4861 object if we already have a function descriptor definition. It also
4862 prevents the linker complaining about undefined symbols.
4863 We also check and correct mismatched symbol visibility here. The
4864 most restrictive visibility of the function descriptor and the
4865 function entry symbol is used. */
4868 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4870 struct ppc_link_hash_table *htab;
4871 struct ppc_link_hash_entry *fdh;
4873 if (eh->elf.root.type == bfd_link_hash_indirect)
4876 if (eh->elf.root.type == bfd_link_hash_warning)
4877 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4879 if (eh->elf.root.root.string[0] != '.')
4882 htab = ppc_hash_table (info);
4886 fdh = lookup_fdh (eh, htab);
4889 if (!info->relocatable
4890 && (eh->elf.root.type == bfd_link_hash_undefined
4891 || eh->elf.root.type == bfd_link_hash_undefweak)
4892 && eh->elf.ref_regular)
4894 /* Make an undefweak function descriptor sym, which is enough to
4895 pull in an --as-needed shared lib, but won't cause link
4896 errors. Archives are handled elsewhere. */
4897 fdh = make_fdh (info, eh);
4900 fdh->elf.ref_regular = 1;
4905 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4906 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4907 if (entry_vis < descr_vis)
4908 fdh->elf.other += entry_vis - descr_vis;
4909 else if (entry_vis > descr_vis)
4910 eh->elf.other += descr_vis - entry_vis;
4912 if ((fdh->elf.root.type == bfd_link_hash_defined
4913 || fdh->elf.root.type == bfd_link_hash_defweak)
4914 && eh->elf.root.type == bfd_link_hash_undefined)
4916 eh->elf.root.type = bfd_link_hash_undefweak;
4917 eh->was_undefined = 1;
4918 htab->twiddled_syms = 1;
4925 /* Process list of dot-symbols we made in link_hash_newfunc. */
4928 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4930 struct ppc_link_hash_table *htab;
4931 struct ppc_link_hash_entry **p, *eh;
4933 if (!is_ppc64_elf (info->output_bfd))
4935 htab = ppc_hash_table (info);
4939 if (is_ppc64_elf (ibfd))
4941 p = &htab->dot_syms;
4942 while ((eh = *p) != NULL)
4945 if (&eh->elf == htab->elf.hgot)
4947 else if (htab->elf.hgot == NULL
4948 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
4949 htab->elf.hgot = &eh->elf;
4950 else if (!add_symbol_adjust (eh, info))
4952 p = &eh->u.next_dot_sym;
4956 /* Clear the list for non-ppc64 input files. */
4957 p = &htab->dot_syms;
4958 while ((eh = *p) != NULL)
4961 p = &eh->u.next_dot_sym;
4964 /* We need to fix the undefs list for any syms we have twiddled to
4966 if (htab->twiddled_syms)
4968 bfd_link_repair_undef_list (&htab->elf.root);
4969 htab->twiddled_syms = 0;
4974 /* Undo hash table changes when an --as-needed input file is determined
4975 not to be needed. */
4978 ppc64_elf_notice_as_needed (bfd *ibfd,
4979 struct bfd_link_info *info,
4980 enum notice_asneeded_action act)
4982 if (act == notice_not_needed)
4984 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4989 htab->dot_syms = NULL;
4991 return _bfd_elf_notice_as_needed (ibfd, info, act);
4994 /* If --just-symbols against a final linked binary, then assume we need
4995 toc adjusting stubs when calling functions defined there. */
4998 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5000 if ((sec->flags & SEC_CODE) != 0
5001 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5002 && is_ppc64_elf (sec->owner))
5004 asection *got = bfd_get_section_by_name (sec->owner, ".got");
5006 && got->size >= elf_backend_got_header_size
5007 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5008 sec->has_toc_reloc = 1;
5010 _bfd_elf_link_just_syms (sec, info);
5013 static struct plt_entry **
5014 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5015 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5017 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5018 struct plt_entry **local_plt;
5019 unsigned char *local_got_tls_masks;
5021 if (local_got_ents == NULL)
5023 bfd_size_type size = symtab_hdr->sh_info;
5025 size *= (sizeof (*local_got_ents)
5026 + sizeof (*local_plt)
5027 + sizeof (*local_got_tls_masks));
5028 local_got_ents = bfd_zalloc (abfd, size);
5029 if (local_got_ents == NULL)
5031 elf_local_got_ents (abfd) = local_got_ents;
5034 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5036 struct got_entry *ent;
5038 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5039 if (ent->addend == r_addend
5040 && ent->owner == abfd
5041 && ent->tls_type == tls_type)
5045 bfd_size_type amt = sizeof (*ent);
5046 ent = bfd_alloc (abfd, amt);
5049 ent->next = local_got_ents[r_symndx];
5050 ent->addend = r_addend;
5052 ent->tls_type = tls_type;
5053 ent->is_indirect = FALSE;
5054 ent->got.refcount = 0;
5055 local_got_ents[r_symndx] = ent;
5057 ent->got.refcount += 1;
5060 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5061 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5062 local_got_tls_masks[r_symndx] |= tls_type;
5064 return local_plt + r_symndx;
5068 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5070 struct plt_entry *ent;
5072 for (ent = *plist; ent != NULL; ent = ent->next)
5073 if (ent->addend == addend)
5077 bfd_size_type amt = sizeof (*ent);
5078 ent = bfd_alloc (abfd, amt);
5082 ent->addend = addend;
5083 ent->plt.refcount = 0;
5086 ent->plt.refcount += 1;
5091 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5093 return (r_type == R_PPC64_REL24
5094 || r_type == R_PPC64_REL14
5095 || r_type == R_PPC64_REL14_BRTAKEN
5096 || r_type == R_PPC64_REL14_BRNTAKEN
5097 || r_type == R_PPC64_ADDR24
5098 || r_type == R_PPC64_ADDR14
5099 || r_type == R_PPC64_ADDR14_BRTAKEN
5100 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5103 /* Look through the relocs for a section during the first phase, and
5104 calculate needed space in the global offset table, procedure
5105 linkage table, and dynamic reloc sections. */
5108 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5109 asection *sec, const Elf_Internal_Rela *relocs)
5111 struct ppc_link_hash_table *htab;
5112 Elf_Internal_Shdr *symtab_hdr;
5113 struct elf_link_hash_entry **sym_hashes;
5114 const Elf_Internal_Rela *rel;
5115 const Elf_Internal_Rela *rel_end;
5117 asection **opd_sym_map;
5118 struct elf_link_hash_entry *tga, *dottga;
5120 if (info->relocatable)
5123 /* Don't do anything special with non-loaded, non-alloced sections.
5124 In particular, any relocs in such sections should not affect GOT
5125 and PLT reference counting (ie. we don't allow them to create GOT
5126 or PLT entries), there's no possibility or desire to optimize TLS
5127 relocs, and there's not much point in propagating relocs to shared
5128 libs that the dynamic linker won't relocate. */
5129 if ((sec->flags & SEC_ALLOC) == 0)
5132 BFD_ASSERT (is_ppc64_elf (abfd));
5134 htab = ppc_hash_table (info);
5138 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5139 FALSE, FALSE, TRUE);
5140 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5141 FALSE, FALSE, TRUE);
5142 symtab_hdr = &elf_symtab_hdr (abfd);
5143 sym_hashes = elf_sym_hashes (abfd);
5146 if (strcmp (sec->name, ".opd") == 0)
5148 /* Garbage collection needs some extra help with .opd sections.
5149 We don't want to necessarily keep everything referenced by
5150 relocs in .opd, as that would keep all functions. Instead,
5151 if we reference an .opd symbol (a function descriptor), we
5152 want to keep the function code symbol's section. This is
5153 easy for global symbols, but for local syms we need to keep
5154 information about the associated function section. */
5157 if (abiversion (abfd) == 0)
5158 set_abiversion (abfd, 1);
5159 else if (abiversion (abfd) == 2)
5161 info->callbacks->einfo (_("%P: .opd not allowed in ABI version %d\n"),
5163 bfd_set_error (bfd_error_bad_value);
5166 amt = sec->size * sizeof (*opd_sym_map) / 8;
5167 opd_sym_map = bfd_zalloc (abfd, amt);
5168 if (opd_sym_map == NULL)
5170 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
5171 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
5172 ppc64_elf_section_data (sec)->sec_type = sec_opd;
5175 rel_end = relocs + sec->reloc_count;
5176 for (rel = relocs; rel < rel_end; rel++)
5178 unsigned long r_symndx;
5179 struct elf_link_hash_entry *h;
5180 enum elf_ppc64_reloc_type r_type;
5182 struct _ppc64_elf_section_data *ppc64_sec;
5183 struct plt_entry **ifunc;
5185 r_symndx = ELF64_R_SYM (rel->r_info);
5186 if (r_symndx < symtab_hdr->sh_info)
5190 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5191 h = elf_follow_link (h);
5193 /* PR15323, ref flags aren't set for references in the same
5195 h->root.non_ir_ref = 1;
5197 if (h == htab->elf.hgot)
5198 sec->has_toc_reloc = 1;
5205 if (h->type == STT_GNU_IFUNC)
5208 ifunc = &h->plt.plist;
5213 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5218 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5220 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5221 rel->r_addend, PLT_IFUNC);
5226 r_type = ELF64_R_TYPE (rel->r_info);
5227 if (is_branch_reloc (r_type))
5229 if (h != NULL && (h == tga || h == dottga))
5232 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5233 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5234 /* We have a new-style __tls_get_addr call with a marker
5238 /* Mark this section as having an old-style call. */
5239 sec->has_tls_get_addr_call = 1;
5242 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5244 && !update_plt_info (abfd, ifunc, rel->r_addend))
5252 /* These special tls relocs tie a call to __tls_get_addr with
5253 its parameter symbol. */
5256 case R_PPC64_GOT_TLSLD16:
5257 case R_PPC64_GOT_TLSLD16_LO:
5258 case R_PPC64_GOT_TLSLD16_HI:
5259 case R_PPC64_GOT_TLSLD16_HA:
5260 tls_type = TLS_TLS | TLS_LD;
5263 case R_PPC64_GOT_TLSGD16:
5264 case R_PPC64_GOT_TLSGD16_LO:
5265 case R_PPC64_GOT_TLSGD16_HI:
5266 case R_PPC64_GOT_TLSGD16_HA:
5267 tls_type = TLS_TLS | TLS_GD;
5270 case R_PPC64_GOT_TPREL16_DS:
5271 case R_PPC64_GOT_TPREL16_LO_DS:
5272 case R_PPC64_GOT_TPREL16_HI:
5273 case R_PPC64_GOT_TPREL16_HA:
5274 if (!info->executable)
5275 info->flags |= DF_STATIC_TLS;
5276 tls_type = TLS_TLS | TLS_TPREL;
5279 case R_PPC64_GOT_DTPREL16_DS:
5280 case R_PPC64_GOT_DTPREL16_LO_DS:
5281 case R_PPC64_GOT_DTPREL16_HI:
5282 case R_PPC64_GOT_DTPREL16_HA:
5283 tls_type = TLS_TLS | TLS_DTPREL;
5285 sec->has_tls_reloc = 1;
5289 case R_PPC64_GOT16_DS:
5290 case R_PPC64_GOT16_HA:
5291 case R_PPC64_GOT16_HI:
5292 case R_PPC64_GOT16_LO:
5293 case R_PPC64_GOT16_LO_DS:
5294 /* This symbol requires a global offset table entry. */
5295 sec->has_toc_reloc = 1;
5296 if (r_type == R_PPC64_GOT_TLSLD16
5297 || r_type == R_PPC64_GOT_TLSGD16
5298 || r_type == R_PPC64_GOT_TPREL16_DS
5299 || r_type == R_PPC64_GOT_DTPREL16_DS
5300 || r_type == R_PPC64_GOT16
5301 || r_type == R_PPC64_GOT16_DS)
5303 htab->do_multi_toc = 1;
5304 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5307 if (ppc64_elf_tdata (abfd)->got == NULL
5308 && !create_got_section (abfd, info))
5313 struct ppc_link_hash_entry *eh;
5314 struct got_entry *ent;
5316 eh = (struct ppc_link_hash_entry *) h;
5317 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5318 if (ent->addend == rel->r_addend
5319 && ent->owner == abfd
5320 && ent->tls_type == tls_type)
5324 bfd_size_type amt = sizeof (*ent);
5325 ent = bfd_alloc (abfd, amt);
5328 ent->next = eh->elf.got.glist;
5329 ent->addend = rel->r_addend;
5331 ent->tls_type = tls_type;
5332 ent->is_indirect = FALSE;
5333 ent->got.refcount = 0;
5334 eh->elf.got.glist = ent;
5336 ent->got.refcount += 1;
5337 eh->tls_mask |= tls_type;
5340 /* This is a global offset table entry for a local symbol. */
5341 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5342 rel->r_addend, tls_type))
5345 /* We may also need a plt entry if the symbol turns out to be
5347 if (h != NULL && !info->shared && abiversion (abfd) == 2)
5349 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5354 case R_PPC64_PLT16_HA:
5355 case R_PPC64_PLT16_HI:
5356 case R_PPC64_PLT16_LO:
5359 /* This symbol requires a procedure linkage table entry. We
5360 actually build the entry in adjust_dynamic_symbol,
5361 because this might be a case of linking PIC code without
5362 linking in any dynamic objects, in which case we don't
5363 need to generate a procedure linkage table after all. */
5366 /* It does not make sense to have a procedure linkage
5367 table entry for a local symbol. */
5368 bfd_set_error (bfd_error_bad_value);
5373 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5376 if (h->root.root.string[0] == '.'
5377 && h->root.root.string[1] != '\0')
5378 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5382 /* The following relocations don't need to propagate the
5383 relocation if linking a shared object since they are
5384 section relative. */
5385 case R_PPC64_SECTOFF:
5386 case R_PPC64_SECTOFF_LO:
5387 case R_PPC64_SECTOFF_HI:
5388 case R_PPC64_SECTOFF_HA:
5389 case R_PPC64_SECTOFF_DS:
5390 case R_PPC64_SECTOFF_LO_DS:
5391 case R_PPC64_DTPREL16:
5392 case R_PPC64_DTPREL16_LO:
5393 case R_PPC64_DTPREL16_HI:
5394 case R_PPC64_DTPREL16_HA:
5395 case R_PPC64_DTPREL16_DS:
5396 case R_PPC64_DTPREL16_LO_DS:
5397 case R_PPC64_DTPREL16_HIGH:
5398 case R_PPC64_DTPREL16_HIGHA:
5399 case R_PPC64_DTPREL16_HIGHER:
5400 case R_PPC64_DTPREL16_HIGHERA:
5401 case R_PPC64_DTPREL16_HIGHEST:
5402 case R_PPC64_DTPREL16_HIGHESTA:
5407 case R_PPC64_REL16_LO:
5408 case R_PPC64_REL16_HI:
5409 case R_PPC64_REL16_HA:
5413 case R_PPC64_TOC16_DS:
5414 htab->do_multi_toc = 1;
5415 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5416 case R_PPC64_TOC16_LO:
5417 case R_PPC64_TOC16_HI:
5418 case R_PPC64_TOC16_HA:
5419 case R_PPC64_TOC16_LO_DS:
5420 sec->has_toc_reloc = 1;
5423 /* This relocation describes the C++ object vtable hierarchy.
5424 Reconstruct it for later use during GC. */
5425 case R_PPC64_GNU_VTINHERIT:
5426 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5430 /* This relocation describes which C++ vtable entries are actually
5431 used. Record for later use during GC. */
5432 case R_PPC64_GNU_VTENTRY:
5433 BFD_ASSERT (h != NULL);
5435 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5440 case R_PPC64_REL14_BRTAKEN:
5441 case R_PPC64_REL14_BRNTAKEN:
5443 asection *dest = NULL;
5445 /* Heuristic: If jumping outside our section, chances are
5446 we are going to need a stub. */
5449 /* If the sym is weak it may be overridden later, so
5450 don't assume we know where a weak sym lives. */
5451 if (h->root.type == bfd_link_hash_defined)
5452 dest = h->root.u.def.section;
5456 Elf_Internal_Sym *isym;
5458 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5463 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5467 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5472 if (h != NULL && ifunc == NULL)
5474 /* We may need a .plt entry if the function this reloc
5475 refers to is in a shared lib. */
5476 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5479 if (h->root.root.string[0] == '.'
5480 && h->root.root.string[1] != '\0')
5481 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5482 if (h == tga || h == dottga)
5483 sec->has_tls_reloc = 1;
5487 case R_PPC64_TPREL64:
5488 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5489 if (!info->executable)
5490 info->flags |= DF_STATIC_TLS;
5493 case R_PPC64_DTPMOD64:
5494 if (rel + 1 < rel_end
5495 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5496 && rel[1].r_offset == rel->r_offset + 8)
5497 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5499 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5502 case R_PPC64_DTPREL64:
5503 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5505 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5506 && rel[-1].r_offset == rel->r_offset - 8)
5507 /* This is the second reloc of a dtpmod, dtprel pair.
5508 Don't mark with TLS_DTPREL. */
5512 sec->has_tls_reloc = 1;
5515 struct ppc_link_hash_entry *eh;
5516 eh = (struct ppc_link_hash_entry *) h;
5517 eh->tls_mask |= tls_type;
5520 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5521 rel->r_addend, tls_type))
5524 ppc64_sec = ppc64_elf_section_data (sec);
5525 if (ppc64_sec->sec_type != sec_toc)
5529 /* One extra to simplify get_tls_mask. */
5530 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5531 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5532 if (ppc64_sec->u.toc.symndx == NULL)
5534 amt = sec->size * sizeof (bfd_vma) / 8;
5535 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5536 if (ppc64_sec->u.toc.add == NULL)
5538 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5539 ppc64_sec->sec_type = sec_toc;
5541 BFD_ASSERT (rel->r_offset % 8 == 0);
5542 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5543 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5545 /* Mark the second slot of a GD or LD entry.
5546 -1 to indicate GD and -2 to indicate LD. */
5547 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5548 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5549 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5550 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5553 case R_PPC64_TPREL16:
5554 case R_PPC64_TPREL16_LO:
5555 case R_PPC64_TPREL16_HI:
5556 case R_PPC64_TPREL16_HA:
5557 case R_PPC64_TPREL16_DS:
5558 case R_PPC64_TPREL16_LO_DS:
5559 case R_PPC64_TPREL16_HIGH:
5560 case R_PPC64_TPREL16_HIGHA:
5561 case R_PPC64_TPREL16_HIGHER:
5562 case R_PPC64_TPREL16_HIGHERA:
5563 case R_PPC64_TPREL16_HIGHEST:
5564 case R_PPC64_TPREL16_HIGHESTA:
5567 if (!info->executable)
5568 info->flags |= DF_STATIC_TLS;
5573 case R_PPC64_ADDR64:
5574 if (opd_sym_map != NULL
5575 && rel + 1 < rel_end
5576 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5580 if (h->root.root.string[0] == '.'
5581 && h->root.root.string[1] != 0
5582 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5585 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5590 Elf_Internal_Sym *isym;
5592 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5597 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5598 if (s != NULL && s != sec)
5599 opd_sym_map[rel->r_offset / 8] = s;
5604 case R_PPC64_ADDR16:
5605 case R_PPC64_ADDR16_DS:
5606 case R_PPC64_ADDR16_HA:
5607 case R_PPC64_ADDR16_HI:
5608 case R_PPC64_ADDR16_HIGH:
5609 case R_PPC64_ADDR16_HIGHA:
5610 case R_PPC64_ADDR16_HIGHER:
5611 case R_PPC64_ADDR16_HIGHERA:
5612 case R_PPC64_ADDR16_HIGHEST:
5613 case R_PPC64_ADDR16_HIGHESTA:
5614 case R_PPC64_ADDR16_LO:
5615 case R_PPC64_ADDR16_LO_DS:
5616 if (h != NULL && !info->shared && abiversion (abfd) == 2
5617 && rel->r_addend == 0)
5619 /* We may need a .plt entry if this reloc refers to a
5620 function in a shared lib. */
5621 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5623 h->pointer_equality_needed = 1;
5630 case R_PPC64_ADDR14:
5631 case R_PPC64_ADDR14_BRNTAKEN:
5632 case R_PPC64_ADDR14_BRTAKEN:
5633 case R_PPC64_ADDR24:
5634 case R_PPC64_ADDR32:
5635 case R_PPC64_UADDR16:
5636 case R_PPC64_UADDR32:
5637 case R_PPC64_UADDR64:
5639 if (h != NULL && !info->shared)
5640 /* We may need a copy reloc. */
5643 /* Don't propagate .opd relocs. */
5644 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5647 /* If we are creating a shared library, and this is a reloc
5648 against a global symbol, or a non PC relative reloc
5649 against a local symbol, then we need to copy the reloc
5650 into the shared library. However, if we are linking with
5651 -Bsymbolic, we do not need to copy a reloc against a
5652 global symbol which is defined in an object we are
5653 including in the link (i.e., DEF_REGULAR is set). At
5654 this point we have not seen all the input files, so it is
5655 possible that DEF_REGULAR is not set now but will be set
5656 later (it is never cleared). In case of a weak definition,
5657 DEF_REGULAR may be cleared later by a strong definition in
5658 a shared library. We account for that possibility below by
5659 storing information in the dyn_relocs field of the hash
5660 table entry. A similar situation occurs when creating
5661 shared libraries and symbol visibility changes render the
5664 If on the other hand, we are creating an executable, we
5665 may need to keep relocations for symbols satisfied by a
5666 dynamic library if we manage to avoid copy relocs for the
5670 && (must_be_dyn_reloc (info, r_type)
5672 && (!SYMBOLIC_BIND (info, h)
5673 || h->root.type == bfd_link_hash_defweak
5674 || !h->def_regular))))
5675 || (ELIMINATE_COPY_RELOCS
5678 && (h->root.type == bfd_link_hash_defweak
5679 || !h->def_regular))
5683 /* We must copy these reloc types into the output file.
5684 Create a reloc section in dynobj and make room for
5688 sreloc = _bfd_elf_make_dynamic_reloc_section
5689 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5695 /* If this is a global symbol, we count the number of
5696 relocations we need for this symbol. */
5699 struct elf_dyn_relocs *p;
5700 struct elf_dyn_relocs **head;
5702 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5704 if (p == NULL || p->sec != sec)
5706 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5716 if (!must_be_dyn_reloc (info, r_type))
5721 /* Track dynamic relocs needed for local syms too.
5722 We really need local syms available to do this
5724 struct ppc_dyn_relocs *p;
5725 struct ppc_dyn_relocs **head;
5726 bfd_boolean is_ifunc;
5729 Elf_Internal_Sym *isym;
5731 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5736 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5740 vpp = &elf_section_data (s)->local_dynrel;
5741 head = (struct ppc_dyn_relocs **) vpp;
5742 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5744 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5746 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5748 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5754 p->ifunc = is_ifunc;
5770 /* Merge backend specific data from an object file to the output
5771 object file when linking. */
5774 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5776 unsigned long iflags, oflags;
5778 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5781 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5784 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5787 iflags = elf_elfheader (ibfd)->e_flags;
5788 oflags = elf_elfheader (obfd)->e_flags;
5790 if (!elf_flags_init (obfd) || oflags == 0)
5792 elf_flags_init (obfd) = TRUE;
5793 elf_elfheader (obfd)->e_flags = iflags;
5795 else if (iflags == oflags || iflags == 0)
5797 else if (iflags & ~EF_PPC64_ABI)
5799 (*_bfd_error_handler)
5800 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5801 bfd_set_error (bfd_error_bad_value);
5806 (*_bfd_error_handler)
5807 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5808 ibfd, iflags, oflags);
5809 bfd_set_error (bfd_error_bad_value);
5813 /* Merge Tag_compatibility attributes and any common GNU ones. */
5814 _bfd_elf_merge_object_attributes (ibfd, obfd);
5820 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5822 /* Print normal ELF private data. */
5823 _bfd_elf_print_private_bfd_data (abfd, ptr);
5825 if (elf_elfheader (abfd)->e_flags != 0)
5829 /* xgettext:c-format */
5830 fprintf (file, _("private flags = 0x%lx:"),
5831 elf_elfheader (abfd)->e_flags);
5833 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5834 fprintf (file, _(" [abiv%ld]"),
5835 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5842 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5843 of the code entry point, and its section. */
5846 opd_entry_value (asection *opd_sec,
5848 asection **code_sec,
5850 bfd_boolean in_code_sec)
5852 bfd *opd_bfd = opd_sec->owner;
5853 Elf_Internal_Rela *relocs;
5854 Elf_Internal_Rela *lo, *hi, *look;
5857 /* No relocs implies we are linking a --just-symbols object, or looking
5858 at a final linked executable with addr2line or somesuch. */
5859 if (opd_sec->reloc_count == 0)
5861 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5863 if (contents == NULL)
5865 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5866 return (bfd_vma) -1;
5867 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5870 val = bfd_get_64 (opd_bfd, contents + offset);
5871 if (code_sec != NULL)
5873 asection *sec, *likely = NULL;
5879 && val < sec->vma + sec->size)
5885 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5887 && (sec->flags & SEC_LOAD) != 0
5888 && (sec->flags & SEC_ALLOC) != 0)
5893 if (code_off != NULL)
5894 *code_off = val - likely->vma;
5900 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5902 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5904 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5906 /* Go find the opd reloc at the sym address. */
5908 BFD_ASSERT (lo != NULL);
5909 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5913 look = lo + (hi - lo) / 2;
5914 if (look->r_offset < offset)
5916 else if (look->r_offset > offset)
5920 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5922 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5923 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5925 unsigned long symndx = ELF64_R_SYM (look->r_info);
5928 if (symndx < symtab_hdr->sh_info
5929 || elf_sym_hashes (opd_bfd) == NULL)
5931 Elf_Internal_Sym *sym;
5933 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5936 size_t symcnt = symtab_hdr->sh_info;
5937 if (elf_sym_hashes (opd_bfd) == NULL)
5938 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5939 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5940 0, NULL, NULL, NULL);
5943 symtab_hdr->contents = (bfd_byte *) sym;
5947 val = sym->st_value;
5948 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5949 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5953 struct elf_link_hash_entry **sym_hashes;
5954 struct elf_link_hash_entry *rh;
5956 sym_hashes = elf_sym_hashes (opd_bfd);
5957 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5960 rh = elf_follow_link (rh);
5961 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5962 || rh->root.type == bfd_link_hash_defweak);
5963 val = rh->root.u.def.value;
5964 sec = rh->root.u.def.section;
5968 /* Handle the odd case where we can be called
5969 during bfd_elf_link_add_symbols before the
5970 symbol hashes have been fully populated. */
5971 Elf_Internal_Sym *sym;
5973 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
5974 symndx, NULL, NULL, NULL);
5978 val = sym->st_value;
5979 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5983 val += look->r_addend;
5984 if (code_off != NULL)
5986 if (code_sec != NULL)
5988 if (in_code_sec && *code_sec != sec)
5993 if (sec != NULL && sec->output_section != NULL)
5994 val += sec->output_section->vma + sec->output_offset;
6003 /* If the ELF symbol SYM might be a function in SEC, return the
6004 function size and set *CODE_OFF to the function's entry point,
6005 otherwise return zero. */
6007 static bfd_size_type
6008 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6013 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6014 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6018 if (!(sym->flags & BSF_SYNTHETIC))
6019 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6021 if (strcmp (sym->section->name, ".opd") == 0)
6023 if (opd_entry_value (sym->section, sym->value,
6024 &sec, code_off, TRUE) == (bfd_vma) -1)
6026 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6027 symbol. This size has nothing to do with the code size of the
6028 function, which is what we're supposed to return, but the
6029 code size isn't available without looking up the dot-sym.
6030 However, doing that would be a waste of time particularly
6031 since elf_find_function will look at the dot-sym anyway.
6032 Now, elf_find_function will keep the largest size of any
6033 function sym found at the code address of interest, so return
6034 1 here to avoid it incorrectly caching a larger function size
6035 for a small function. This does mean we return the wrong
6036 size for a new-ABI function of size 24, but all that does is
6037 disable caching for such functions. */
6043 if (sym->section != sec)
6045 *code_off = sym->value;
6052 /* Return true if symbol is defined in a regular object file. */
6055 is_static_defined (struct elf_link_hash_entry *h)
6057 return ((h->root.type == bfd_link_hash_defined
6058 || h->root.type == bfd_link_hash_defweak)
6059 && h->root.u.def.section != NULL
6060 && h->root.u.def.section->output_section != NULL);
6063 /* If FDH is a function descriptor symbol, return the associated code
6064 entry symbol if it is defined. Return NULL otherwise. */
6066 static struct ppc_link_hash_entry *
6067 defined_code_entry (struct ppc_link_hash_entry *fdh)
6069 if (fdh->is_func_descriptor)
6071 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6072 if (fh->elf.root.type == bfd_link_hash_defined
6073 || fh->elf.root.type == bfd_link_hash_defweak)
6079 /* If FH is a function code entry symbol, return the associated
6080 function descriptor symbol if it is defined. Return NULL otherwise. */
6082 static struct ppc_link_hash_entry *
6083 defined_func_desc (struct ppc_link_hash_entry *fh)
6086 && fh->oh->is_func_descriptor)
6088 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6089 if (fdh->elf.root.type == bfd_link_hash_defined
6090 || fdh->elf.root.type == bfd_link_hash_defweak)
6096 /* Mark all our entry sym sections, both opd and code section. */
6099 ppc64_elf_gc_keep (struct bfd_link_info *info)
6101 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6102 struct bfd_sym_chain *sym;
6107 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6109 struct ppc_link_hash_entry *eh, *fh;
6112 eh = (struct ppc_link_hash_entry *)
6113 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6116 if (eh->elf.root.type != bfd_link_hash_defined
6117 && eh->elf.root.type != bfd_link_hash_defweak)
6120 fh = defined_code_entry (eh);
6123 sec = fh->elf.root.u.def.section;
6124 sec->flags |= SEC_KEEP;
6126 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6127 && opd_entry_value (eh->elf.root.u.def.section,
6128 eh->elf.root.u.def.value,
6129 &sec, NULL, FALSE) != (bfd_vma) -1)
6130 sec->flags |= SEC_KEEP;
6132 sec = eh->elf.root.u.def.section;
6133 sec->flags |= SEC_KEEP;
6137 /* Mark sections containing dynamically referenced symbols. When
6138 building shared libraries, we must assume that any visible symbol is
6142 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6144 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6145 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6146 struct ppc_link_hash_entry *fdh;
6148 /* Dynamic linking info is on the func descriptor sym. */
6149 fdh = defined_func_desc (eh);
6153 if ((eh->elf.root.type == bfd_link_hash_defined
6154 || eh->elf.root.type == bfd_link_hash_defweak)
6155 && (eh->elf.ref_dynamic
6156 || (!info->executable
6157 && eh->elf.def_regular
6158 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6159 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6160 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6161 || !bfd_hide_sym_by_version (info->version_info,
6162 eh->elf.root.root.string)))))
6165 struct ppc_link_hash_entry *fh;
6167 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6169 /* Function descriptor syms cause the associated
6170 function code sym section to be marked. */
6171 fh = defined_code_entry (eh);
6174 code_sec = fh->elf.root.u.def.section;
6175 code_sec->flags |= SEC_KEEP;
6177 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6178 && opd_entry_value (eh->elf.root.u.def.section,
6179 eh->elf.root.u.def.value,
6180 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6181 code_sec->flags |= SEC_KEEP;
6187 /* Return the section that should be marked against GC for a given
6191 ppc64_elf_gc_mark_hook (asection *sec,
6192 struct bfd_link_info *info,
6193 Elf_Internal_Rela *rel,
6194 struct elf_link_hash_entry *h,
6195 Elf_Internal_Sym *sym)
6199 /* Syms return NULL if we're marking .opd, so we avoid marking all
6200 function sections, as all functions are referenced in .opd. */
6202 if (get_opd_info (sec) != NULL)
6207 enum elf_ppc64_reloc_type r_type;
6208 struct ppc_link_hash_entry *eh, *fh, *fdh;
6210 r_type = ELF64_R_TYPE (rel->r_info);
6213 case R_PPC64_GNU_VTINHERIT:
6214 case R_PPC64_GNU_VTENTRY:
6218 switch (h->root.type)
6220 case bfd_link_hash_defined:
6221 case bfd_link_hash_defweak:
6222 eh = (struct ppc_link_hash_entry *) h;
6223 fdh = defined_func_desc (eh);
6227 /* Function descriptor syms cause the associated
6228 function code sym section to be marked. */
6229 fh = defined_code_entry (eh);
6232 /* They also mark their opd section. */
6233 eh->elf.root.u.def.section->gc_mark = 1;
6235 rsec = fh->elf.root.u.def.section;
6237 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6238 && opd_entry_value (eh->elf.root.u.def.section,
6239 eh->elf.root.u.def.value,
6240 &rsec, NULL, FALSE) != (bfd_vma) -1)
6241 eh->elf.root.u.def.section->gc_mark = 1;
6243 rsec = h->root.u.def.section;
6246 case bfd_link_hash_common:
6247 rsec = h->root.u.c.p->section;
6251 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6257 struct _opd_sec_data *opd;
6259 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6260 opd = get_opd_info (rsec);
6261 if (opd != NULL && opd->func_sec != NULL)
6265 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
6272 /* Update the .got, .plt. and dynamic reloc reference counts for the
6273 section being removed. */
6276 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6277 asection *sec, const Elf_Internal_Rela *relocs)
6279 struct ppc_link_hash_table *htab;
6280 Elf_Internal_Shdr *symtab_hdr;
6281 struct elf_link_hash_entry **sym_hashes;
6282 struct got_entry **local_got_ents;
6283 const Elf_Internal_Rela *rel, *relend;
6285 if (info->relocatable)
6288 if ((sec->flags & SEC_ALLOC) == 0)
6291 elf_section_data (sec)->local_dynrel = NULL;
6293 htab = ppc_hash_table (info);
6297 symtab_hdr = &elf_symtab_hdr (abfd);
6298 sym_hashes = elf_sym_hashes (abfd);
6299 local_got_ents = elf_local_got_ents (abfd);
6301 relend = relocs + sec->reloc_count;
6302 for (rel = relocs; rel < relend; rel++)
6304 unsigned long r_symndx;
6305 enum elf_ppc64_reloc_type r_type;
6306 struct elf_link_hash_entry *h = NULL;
6307 unsigned char tls_type = 0;
6309 r_symndx = ELF64_R_SYM (rel->r_info);
6310 r_type = ELF64_R_TYPE (rel->r_info);
6311 if (r_symndx >= symtab_hdr->sh_info)
6313 struct ppc_link_hash_entry *eh;
6314 struct elf_dyn_relocs **pp;
6315 struct elf_dyn_relocs *p;
6317 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6318 h = elf_follow_link (h);
6319 eh = (struct ppc_link_hash_entry *) h;
6321 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6324 /* Everything must go for SEC. */
6330 if (is_branch_reloc (r_type))
6332 struct plt_entry **ifunc = NULL;
6335 if (h->type == STT_GNU_IFUNC)
6336 ifunc = &h->plt.plist;
6338 else if (local_got_ents != NULL)
6340 struct plt_entry **local_plt = (struct plt_entry **)
6341 (local_got_ents + symtab_hdr->sh_info);
6342 unsigned char *local_got_tls_masks = (unsigned char *)
6343 (local_plt + symtab_hdr->sh_info);
6344 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6345 ifunc = local_plt + r_symndx;
6349 struct plt_entry *ent;
6351 for (ent = *ifunc; ent != NULL; ent = ent->next)
6352 if (ent->addend == rel->r_addend)
6356 if (ent->plt.refcount > 0)
6357 ent->plt.refcount -= 1;
6364 case R_PPC64_GOT_TLSLD16:
6365 case R_PPC64_GOT_TLSLD16_LO:
6366 case R_PPC64_GOT_TLSLD16_HI:
6367 case R_PPC64_GOT_TLSLD16_HA:
6368 tls_type = TLS_TLS | TLS_LD;
6371 case R_PPC64_GOT_TLSGD16:
6372 case R_PPC64_GOT_TLSGD16_LO:
6373 case R_PPC64_GOT_TLSGD16_HI:
6374 case R_PPC64_GOT_TLSGD16_HA:
6375 tls_type = TLS_TLS | TLS_GD;
6378 case R_PPC64_GOT_TPREL16_DS:
6379 case R_PPC64_GOT_TPREL16_LO_DS:
6380 case R_PPC64_GOT_TPREL16_HI:
6381 case R_PPC64_GOT_TPREL16_HA:
6382 tls_type = TLS_TLS | TLS_TPREL;
6385 case R_PPC64_GOT_DTPREL16_DS:
6386 case R_PPC64_GOT_DTPREL16_LO_DS:
6387 case R_PPC64_GOT_DTPREL16_HI:
6388 case R_PPC64_GOT_DTPREL16_HA:
6389 tls_type = TLS_TLS | TLS_DTPREL;
6393 case R_PPC64_GOT16_DS:
6394 case R_PPC64_GOT16_HA:
6395 case R_PPC64_GOT16_HI:
6396 case R_PPC64_GOT16_LO:
6397 case R_PPC64_GOT16_LO_DS:
6400 struct got_entry *ent;
6405 ent = local_got_ents[r_symndx];
6407 for (; ent != NULL; ent = ent->next)
6408 if (ent->addend == rel->r_addend
6409 && ent->owner == abfd
6410 && ent->tls_type == tls_type)
6414 if (ent->got.refcount > 0)
6415 ent->got.refcount -= 1;
6419 case R_PPC64_PLT16_HA:
6420 case R_PPC64_PLT16_HI:
6421 case R_PPC64_PLT16_LO:
6425 case R_PPC64_REL14_BRNTAKEN:
6426 case R_PPC64_REL14_BRTAKEN:
6430 struct plt_entry *ent;
6432 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6433 if (ent->addend == rel->r_addend)
6435 if (ent != NULL && ent->plt.refcount > 0)
6436 ent->plt.refcount -= 1;
6447 /* The maximum size of .sfpr. */
6448 #define SFPR_MAX (218*4)
6450 struct sfpr_def_parms
6452 const char name[12];
6453 unsigned char lo, hi;
6454 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6455 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6458 /* Auto-generate _save*, _rest* functions in .sfpr. */
6461 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6463 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6465 size_t len = strlen (parm->name);
6466 bfd_boolean writing = FALSE;
6472 memcpy (sym, parm->name, len);
6475 for (i = parm->lo; i <= parm->hi; i++)
6477 struct elf_link_hash_entry *h;
6479 sym[len + 0] = i / 10 + '0';
6480 sym[len + 1] = i % 10 + '0';
6481 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6485 h->root.type = bfd_link_hash_defined;
6486 h->root.u.def.section = htab->sfpr;
6487 h->root.u.def.value = htab->sfpr->size;
6490 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6492 if (htab->sfpr->contents == NULL)
6494 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6495 if (htab->sfpr->contents == NULL)
6501 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6503 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6505 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6506 htab->sfpr->size = p - htab->sfpr->contents;
6514 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6516 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6521 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6523 p = savegpr0 (abfd, p, r);
6524 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6526 bfd_put_32 (abfd, BLR, p);
6531 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6533 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6538 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6540 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6542 p = restgpr0 (abfd, p, r);
6543 bfd_put_32 (abfd, MTLR_R0, p);
6547 p = restgpr0 (abfd, p, 30);
6548 p = restgpr0 (abfd, p, 31);
6550 bfd_put_32 (abfd, BLR, p);
6555 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6557 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6562 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6564 p = savegpr1 (abfd, p, r);
6565 bfd_put_32 (abfd, BLR, p);
6570 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6572 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6577 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6579 p = restgpr1 (abfd, p, r);
6580 bfd_put_32 (abfd, BLR, p);
6585 savefpr (bfd *abfd, bfd_byte *p, int r)
6587 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6592 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6594 p = savefpr (abfd, p, r);
6595 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6597 bfd_put_32 (abfd, BLR, p);
6602 restfpr (bfd *abfd, bfd_byte *p, int r)
6604 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6609 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6611 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6613 p = restfpr (abfd, p, r);
6614 bfd_put_32 (abfd, MTLR_R0, p);
6618 p = restfpr (abfd, p, 30);
6619 p = restfpr (abfd, p, 31);
6621 bfd_put_32 (abfd, BLR, p);
6626 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6628 p = savefpr (abfd, p, r);
6629 bfd_put_32 (abfd, BLR, p);
6634 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6636 p = restfpr (abfd, p, r);
6637 bfd_put_32 (abfd, BLR, p);
6642 savevr (bfd *abfd, bfd_byte *p, int r)
6644 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6646 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6651 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6653 p = savevr (abfd, p, r);
6654 bfd_put_32 (abfd, BLR, p);
6659 restvr (bfd *abfd, bfd_byte *p, int r)
6661 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6663 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6668 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6670 p = restvr (abfd, p, r);
6671 bfd_put_32 (abfd, BLR, p);
6675 /* Called via elf_link_hash_traverse to transfer dynamic linking
6676 information on function code symbol entries to their corresponding
6677 function descriptor symbol entries. */
6680 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6682 struct bfd_link_info *info;
6683 struct ppc_link_hash_table *htab;
6684 struct plt_entry *ent;
6685 struct ppc_link_hash_entry *fh;
6686 struct ppc_link_hash_entry *fdh;
6687 bfd_boolean force_local;
6689 fh = (struct ppc_link_hash_entry *) h;
6690 if (fh->elf.root.type == bfd_link_hash_indirect)
6694 htab = ppc_hash_table (info);
6698 /* Resolve undefined references to dot-symbols as the value
6699 in the function descriptor, if we have one in a regular object.
6700 This is to satisfy cases like ".quad .foo". Calls to functions
6701 in dynamic objects are handled elsewhere. */
6702 if (fh->elf.root.type == bfd_link_hash_undefweak
6703 && fh->was_undefined
6704 && (fdh = defined_func_desc (fh)) != NULL
6705 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6706 && opd_entry_value (fdh->elf.root.u.def.section,
6707 fdh->elf.root.u.def.value,
6708 &fh->elf.root.u.def.section,
6709 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6711 fh->elf.root.type = fdh->elf.root.type;
6712 fh->elf.forced_local = 1;
6713 fh->elf.def_regular = fdh->elf.def_regular;
6714 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6717 /* If this is a function code symbol, transfer dynamic linking
6718 information to the function descriptor symbol. */
6722 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6723 if (ent->plt.refcount > 0)
6726 || fh->elf.root.root.string[0] != '.'
6727 || fh->elf.root.root.string[1] == '\0')
6730 /* Find the corresponding function descriptor symbol. Create it
6731 as undefined if necessary. */
6733 fdh = lookup_fdh (fh, htab);
6735 && !info->executable
6736 && (fh->elf.root.type == bfd_link_hash_undefined
6737 || fh->elf.root.type == bfd_link_hash_undefweak))
6739 fdh = make_fdh (info, fh);
6744 /* Fake function descriptors are made undefweak. If the function
6745 code symbol is strong undefined, make the fake sym the same.
6746 If the function code symbol is defined, then force the fake
6747 descriptor local; We can't support overriding of symbols in a
6748 shared library on a fake descriptor. */
6752 && fdh->elf.root.type == bfd_link_hash_undefweak)
6754 if (fh->elf.root.type == bfd_link_hash_undefined)
6756 fdh->elf.root.type = bfd_link_hash_undefined;
6757 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6759 else if (fh->elf.root.type == bfd_link_hash_defined
6760 || fh->elf.root.type == bfd_link_hash_defweak)
6762 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6767 && !fdh->elf.forced_local
6768 && (!info->executable
6769 || fdh->elf.def_dynamic
6770 || fdh->elf.ref_dynamic
6771 || (fdh->elf.root.type == bfd_link_hash_undefweak
6772 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6774 if (fdh->elf.dynindx == -1)
6775 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6777 fdh->elf.ref_regular |= fh->elf.ref_regular;
6778 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6779 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6780 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6781 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6783 move_plt_plist (fh, fdh);
6784 fdh->elf.needs_plt = 1;
6786 fdh->is_func_descriptor = 1;
6791 /* Now that the info is on the function descriptor, clear the
6792 function code sym info. Any function code syms for which we
6793 don't have a definition in a regular file, we force local.
6794 This prevents a shared library from exporting syms that have
6795 been imported from another library. Function code syms that
6796 are really in the library we must leave global to prevent the
6797 linker dragging in a definition from a static library. */
6798 force_local = (!fh->elf.def_regular
6800 || !fdh->elf.def_regular
6801 || fdh->elf.forced_local);
6802 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6807 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6808 this hook to a) provide some gcc support functions, and b) transfer
6809 dynamic linking information gathered so far on function code symbol
6810 entries, to their corresponding function descriptor symbol entries. */
6813 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6814 struct bfd_link_info *info)
6816 struct ppc_link_hash_table *htab;
6818 static const struct sfpr_def_parms funcs[] =
6820 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6821 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6822 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6823 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6824 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6825 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6826 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6827 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6828 { "._savef", 14, 31, savefpr, savefpr1_tail },
6829 { "._restf", 14, 31, restfpr, restfpr1_tail },
6830 { "_savevr_", 20, 31, savevr, savevr_tail },
6831 { "_restvr_", 20, 31, restvr, restvr_tail }
6834 htab = ppc_hash_table (info);
6838 if (!info->relocatable
6839 && htab->elf.hgot != NULL)
6840 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6842 if (htab->sfpr == NULL)
6843 /* We don't have any relocs. */
6846 /* Provide any missing _save* and _rest* functions. */
6847 htab->sfpr->size = 0;
6848 if (!info->relocatable)
6849 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6850 if (!sfpr_define (info, &funcs[i]))
6853 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6855 if (htab->sfpr->size == 0)
6856 htab->sfpr->flags |= SEC_EXCLUDE;
6861 /* Return true if we have dynamic relocs that apply to read-only sections. */
6864 readonly_dynrelocs (struct elf_link_hash_entry *h)
6866 struct ppc_link_hash_entry *eh;
6867 struct elf_dyn_relocs *p;
6869 eh = (struct ppc_link_hash_entry *) h;
6870 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6872 asection *s = p->sec->output_section;
6874 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6880 /* Adjust a symbol defined by a dynamic object and referenced by a
6881 regular object. The current definition is in some section of the
6882 dynamic object, but we're not including those sections. We have to
6883 change the definition to something the rest of the link can
6887 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6888 struct elf_link_hash_entry *h)
6890 struct ppc_link_hash_table *htab;
6893 htab = ppc_hash_table (info);
6897 /* Deal with function syms. */
6898 if (h->type == STT_FUNC
6899 || h->type == STT_GNU_IFUNC
6902 /* Clear procedure linkage table information for any symbol that
6903 won't need a .plt entry. */
6904 struct plt_entry *ent;
6905 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6906 if (ent->plt.refcount > 0)
6909 || (h->type != STT_GNU_IFUNC
6910 && (SYMBOL_CALLS_LOCAL (info, h)
6911 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6912 && h->root.type == bfd_link_hash_undefweak))))
6914 h->plt.plist = NULL;
6917 else if (abiversion (info->output_bfd) == 2)
6919 /* After adjust_dynamic_symbol, non_got_ref set in the
6920 non-shared case means that we have allocated space in
6921 .dynbss for the symbol and thus dyn_relocs for this
6922 symbol should be discarded.
6923 If we get here we know we are making a PLT entry for this
6924 symbol, and in an executable we'd normally resolve
6925 relocations against this symbol to the PLT entry. Allow
6926 dynamic relocs if the reference is weak, and the dynamic
6927 relocs will not cause text relocation. */
6928 if (!h->ref_regular_nonweak
6930 && h->type != STT_GNU_IFUNC
6931 && !readonly_dynrelocs (h))
6934 /* If making a plt entry, then we don't need copy relocs. */
6939 h->plt.plist = NULL;
6941 /* If this is a weak symbol, and there is a real definition, the
6942 processor independent code will have arranged for us to see the
6943 real definition first, and we can just use the same value. */
6944 if (h->u.weakdef != NULL)
6946 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6947 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6948 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6949 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6950 if (ELIMINATE_COPY_RELOCS)
6951 h->non_got_ref = h->u.weakdef->non_got_ref;
6955 /* If we are creating a shared library, we must presume that the
6956 only references to the symbol are via the global offset table.
6957 For such cases we need not do anything here; the relocations will
6958 be handled correctly by relocate_section. */
6962 /* If there are no references to this symbol that do not use the
6963 GOT, we don't need to generate a copy reloc. */
6964 if (!h->non_got_ref)
6967 /* Don't generate a copy reloc for symbols defined in the executable. */
6968 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6971 /* If we didn't find any dynamic relocs in read-only sections, then
6972 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6973 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
6979 if (h->plt.plist != NULL)
6981 /* We should never get here, but unfortunately there are versions
6982 of gcc out there that improperly (for this ABI) put initialized
6983 function pointers, vtable refs and suchlike in read-only
6984 sections. Allow them to proceed, but warn that this might
6985 break at runtime. */
6986 info->callbacks->einfo
6987 (_("%P: copy reloc against `%T' requires lazy plt linking; "
6988 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6989 h->root.root.string);
6992 /* This is a reference to a symbol defined by a dynamic object which
6993 is not a function. */
6995 /* We must allocate the symbol in our .dynbss section, which will
6996 become part of the .bss section of the executable. There will be
6997 an entry for this symbol in the .dynsym section. The dynamic
6998 object will contain position independent code, so all references
6999 from the dynamic object to this symbol will go through the global
7000 offset table. The dynamic linker will use the .dynsym entry to
7001 determine the address it must put in the global offset table, so
7002 both the dynamic object and the regular object will refer to the
7003 same memory location for the variable. */
7005 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7006 to copy the initial value out of the dynamic object and into the
7007 runtime process image. We need to remember the offset into the
7008 .rela.bss section we are going to use. */
7009 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7011 htab->relbss->size += sizeof (Elf64_External_Rela);
7017 return _bfd_elf_adjust_dynamic_copy (h, s);
7020 /* If given a function descriptor symbol, hide both the function code
7021 sym and the descriptor. */
7023 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7024 struct elf_link_hash_entry *h,
7025 bfd_boolean force_local)
7027 struct ppc_link_hash_entry *eh;
7028 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7030 eh = (struct ppc_link_hash_entry *) h;
7031 if (eh->is_func_descriptor)
7033 struct ppc_link_hash_entry *fh = eh->oh;
7038 struct ppc_link_hash_table *htab;
7041 /* We aren't supposed to use alloca in BFD because on
7042 systems which do not have alloca the version in libiberty
7043 calls xmalloc, which might cause the program to crash
7044 when it runs out of memory. This function doesn't have a
7045 return status, so there's no way to gracefully return an
7046 error. So cheat. We know that string[-1] can be safely
7047 accessed; It's either a string in an ELF string table,
7048 or allocated in an objalloc structure. */
7050 p = eh->elf.root.root.string - 1;
7053 htab = ppc_hash_table (info);
7057 fh = (struct ppc_link_hash_entry *)
7058 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7061 /* Unfortunately, if it so happens that the string we were
7062 looking for was allocated immediately before this string,
7063 then we overwrote the string terminator. That's the only
7064 reason the lookup should fail. */
7067 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7068 while (q >= eh->elf.root.root.string && *q == *p)
7070 if (q < eh->elf.root.root.string && *p == '.')
7071 fh = (struct ppc_link_hash_entry *)
7072 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7081 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7086 get_sym_h (struct elf_link_hash_entry **hp,
7087 Elf_Internal_Sym **symp,
7089 unsigned char **tls_maskp,
7090 Elf_Internal_Sym **locsymsp,
7091 unsigned long r_symndx,
7094 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7096 if (r_symndx >= symtab_hdr->sh_info)
7098 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7099 struct elf_link_hash_entry *h;
7101 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7102 h = elf_follow_link (h);
7110 if (symsecp != NULL)
7112 asection *symsec = NULL;
7113 if (h->root.type == bfd_link_hash_defined
7114 || h->root.type == bfd_link_hash_defweak)
7115 symsec = h->root.u.def.section;
7119 if (tls_maskp != NULL)
7121 struct ppc_link_hash_entry *eh;
7123 eh = (struct ppc_link_hash_entry *) h;
7124 *tls_maskp = &eh->tls_mask;
7129 Elf_Internal_Sym *sym;
7130 Elf_Internal_Sym *locsyms = *locsymsp;
7132 if (locsyms == NULL)
7134 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7135 if (locsyms == NULL)
7136 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7137 symtab_hdr->sh_info,
7138 0, NULL, NULL, NULL);
7139 if (locsyms == NULL)
7141 *locsymsp = locsyms;
7143 sym = locsyms + r_symndx;
7151 if (symsecp != NULL)
7152 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7154 if (tls_maskp != NULL)
7156 struct got_entry **lgot_ents;
7157 unsigned char *tls_mask;
7160 lgot_ents = elf_local_got_ents (ibfd);
7161 if (lgot_ents != NULL)
7163 struct plt_entry **local_plt = (struct plt_entry **)
7164 (lgot_ents + symtab_hdr->sh_info);
7165 unsigned char *lgot_masks = (unsigned char *)
7166 (local_plt + symtab_hdr->sh_info);
7167 tls_mask = &lgot_masks[r_symndx];
7169 *tls_maskp = tls_mask;
7175 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7176 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7177 type suitable for optimization, and 1 otherwise. */
7180 get_tls_mask (unsigned char **tls_maskp,
7181 unsigned long *toc_symndx,
7182 bfd_vma *toc_addend,
7183 Elf_Internal_Sym **locsymsp,
7184 const Elf_Internal_Rela *rel,
7187 unsigned long r_symndx;
7189 struct elf_link_hash_entry *h;
7190 Elf_Internal_Sym *sym;
7194 r_symndx = ELF64_R_SYM (rel->r_info);
7195 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7198 if ((*tls_maskp != NULL && **tls_maskp != 0)
7200 || ppc64_elf_section_data (sec) == NULL
7201 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7204 /* Look inside a TOC section too. */
7207 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7208 off = h->root.u.def.value;
7211 off = sym->st_value;
7212 off += rel->r_addend;
7213 BFD_ASSERT (off % 8 == 0);
7214 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7215 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7216 if (toc_symndx != NULL)
7217 *toc_symndx = r_symndx;
7218 if (toc_addend != NULL)
7219 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7220 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7222 if ((h == NULL || is_static_defined (h))
7223 && (next_r == -1 || next_r == -2))
7228 /* Find (or create) an entry in the tocsave hash table. */
7230 static struct tocsave_entry *
7231 tocsave_find (struct ppc_link_hash_table *htab,
7232 enum insert_option insert,
7233 Elf_Internal_Sym **local_syms,
7234 const Elf_Internal_Rela *irela,
7237 unsigned long r_indx;
7238 struct elf_link_hash_entry *h;
7239 Elf_Internal_Sym *sym;
7240 struct tocsave_entry ent, *p;
7242 struct tocsave_entry **slot;
7244 r_indx = ELF64_R_SYM (irela->r_info);
7245 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7247 if (ent.sec == NULL || ent.sec->output_section == NULL)
7249 (*_bfd_error_handler)
7250 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7255 ent.offset = h->root.u.def.value;
7257 ent.offset = sym->st_value;
7258 ent.offset += irela->r_addend;
7260 hash = tocsave_htab_hash (&ent);
7261 slot = ((struct tocsave_entry **)
7262 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7268 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7277 /* Adjust all global syms defined in opd sections. In gcc generated
7278 code for the old ABI, these will already have been done. */
7281 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7283 struct ppc_link_hash_entry *eh;
7285 struct _opd_sec_data *opd;
7287 if (h->root.type == bfd_link_hash_indirect)
7290 if (h->root.type != bfd_link_hash_defined
7291 && h->root.type != bfd_link_hash_defweak)
7294 eh = (struct ppc_link_hash_entry *) h;
7295 if (eh->adjust_done)
7298 sym_sec = eh->elf.root.u.def.section;
7299 opd = get_opd_info (sym_sec);
7300 if (opd != NULL && opd->adjust != NULL)
7302 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7305 /* This entry has been deleted. */
7306 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7309 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7310 if (discarded_section (dsec))
7312 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7316 eh->elf.root.u.def.value = 0;
7317 eh->elf.root.u.def.section = dsec;
7320 eh->elf.root.u.def.value += adjust;
7321 eh->adjust_done = 1;
7326 /* Handles decrementing dynamic reloc counts for the reloc specified by
7327 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7328 have already been determined. */
7331 dec_dynrel_count (bfd_vma r_info,
7333 struct bfd_link_info *info,
7334 Elf_Internal_Sym **local_syms,
7335 struct elf_link_hash_entry *h,
7336 Elf_Internal_Sym *sym)
7338 enum elf_ppc64_reloc_type r_type;
7339 asection *sym_sec = NULL;
7341 /* Can this reloc be dynamic? This switch, and later tests here
7342 should be kept in sync with the code in check_relocs. */
7343 r_type = ELF64_R_TYPE (r_info);
7349 case R_PPC64_TPREL16:
7350 case R_PPC64_TPREL16_LO:
7351 case R_PPC64_TPREL16_HI:
7352 case R_PPC64_TPREL16_HA:
7353 case R_PPC64_TPREL16_DS:
7354 case R_PPC64_TPREL16_LO_DS:
7355 case R_PPC64_TPREL16_HIGH:
7356 case R_PPC64_TPREL16_HIGHA:
7357 case R_PPC64_TPREL16_HIGHER:
7358 case R_PPC64_TPREL16_HIGHERA:
7359 case R_PPC64_TPREL16_HIGHEST:
7360 case R_PPC64_TPREL16_HIGHESTA:
7364 case R_PPC64_TPREL64:
7365 case R_PPC64_DTPMOD64:
7366 case R_PPC64_DTPREL64:
7367 case R_PPC64_ADDR64:
7371 case R_PPC64_ADDR14:
7372 case R_PPC64_ADDR14_BRNTAKEN:
7373 case R_PPC64_ADDR14_BRTAKEN:
7374 case R_PPC64_ADDR16:
7375 case R_PPC64_ADDR16_DS:
7376 case R_PPC64_ADDR16_HA:
7377 case R_PPC64_ADDR16_HI:
7378 case R_PPC64_ADDR16_HIGH:
7379 case R_PPC64_ADDR16_HIGHA:
7380 case R_PPC64_ADDR16_HIGHER:
7381 case R_PPC64_ADDR16_HIGHERA:
7382 case R_PPC64_ADDR16_HIGHEST:
7383 case R_PPC64_ADDR16_HIGHESTA:
7384 case R_PPC64_ADDR16_LO:
7385 case R_PPC64_ADDR16_LO_DS:
7386 case R_PPC64_ADDR24:
7387 case R_PPC64_ADDR32:
7388 case R_PPC64_UADDR16:
7389 case R_PPC64_UADDR32:
7390 case R_PPC64_UADDR64:
7395 if (local_syms != NULL)
7397 unsigned long r_symndx;
7398 bfd *ibfd = sec->owner;
7400 r_symndx = ELF64_R_SYM (r_info);
7401 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7406 && (must_be_dyn_reloc (info, r_type)
7408 && (!SYMBOLIC_BIND (info, h)
7409 || h->root.type == bfd_link_hash_defweak
7410 || !h->def_regular))))
7411 || (ELIMINATE_COPY_RELOCS
7414 && (h->root.type == bfd_link_hash_defweak
7415 || !h->def_regular)))
7422 struct elf_dyn_relocs *p;
7423 struct elf_dyn_relocs **pp;
7424 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7426 /* elf_gc_sweep may have already removed all dyn relocs associated
7427 with local syms for a given section. Also, symbol flags are
7428 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7429 report a dynreloc miscount. */
7430 if (*pp == NULL && info->gc_sections)
7433 while ((p = *pp) != NULL)
7437 if (!must_be_dyn_reloc (info, r_type))
7449 struct ppc_dyn_relocs *p;
7450 struct ppc_dyn_relocs **pp;
7452 bfd_boolean is_ifunc;
7454 if (local_syms == NULL)
7455 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7456 if (sym_sec == NULL)
7459 vpp = &elf_section_data (sym_sec)->local_dynrel;
7460 pp = (struct ppc_dyn_relocs **) vpp;
7462 if (*pp == NULL && info->gc_sections)
7465 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7466 while ((p = *pp) != NULL)
7468 if (p->sec == sec && p->ifunc == is_ifunc)
7479 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7481 bfd_set_error (bfd_error_bad_value);
7485 /* Remove unused Official Procedure Descriptor entries. Currently we
7486 only remove those associated with functions in discarded link-once
7487 sections, or weakly defined functions that have been overridden. It
7488 would be possible to remove many more entries for statically linked
7492 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7495 bfd_boolean some_edited = FALSE;
7496 asection *need_pad = NULL;
7498 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7501 Elf_Internal_Rela *relstart, *rel, *relend;
7502 Elf_Internal_Shdr *symtab_hdr;
7503 Elf_Internal_Sym *local_syms;
7505 struct _opd_sec_data *opd;
7506 bfd_boolean need_edit, add_aux_fields;
7507 bfd_size_type cnt_16b = 0;
7509 if (!is_ppc64_elf (ibfd))
7512 sec = bfd_get_section_by_name (ibfd, ".opd");
7513 if (sec == NULL || sec->size == 0)
7516 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7519 if (sec->output_section == bfd_abs_section_ptr)
7522 /* Look through the section relocs. */
7523 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7527 symtab_hdr = &elf_symtab_hdr (ibfd);
7529 /* Read the relocations. */
7530 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7532 if (relstart == NULL)
7535 /* First run through the relocs to check they are sane, and to
7536 determine whether we need to edit this opd section. */
7540 relend = relstart + sec->reloc_count;
7541 for (rel = relstart; rel < relend; )
7543 enum elf_ppc64_reloc_type r_type;
7544 unsigned long r_symndx;
7546 struct elf_link_hash_entry *h;
7547 Elf_Internal_Sym *sym;
7549 /* .opd contains a regular array of 16 or 24 byte entries. We're
7550 only interested in the reloc pointing to a function entry
7552 if (rel->r_offset != offset
7553 || rel + 1 >= relend
7554 || (rel + 1)->r_offset != offset + 8)
7556 /* If someone messes with .opd alignment then after a
7557 "ld -r" we might have padding in the middle of .opd.
7558 Also, there's nothing to prevent someone putting
7559 something silly in .opd with the assembler. No .opd
7560 optimization for them! */
7562 (*_bfd_error_handler)
7563 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7568 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7569 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7571 (*_bfd_error_handler)
7572 (_("%B: unexpected reloc type %u in .opd section"),
7578 r_symndx = ELF64_R_SYM (rel->r_info);
7579 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7583 if (sym_sec == NULL || sym_sec->owner == NULL)
7585 const char *sym_name;
7587 sym_name = h->root.root.string;
7589 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7592 (*_bfd_error_handler)
7593 (_("%B: undefined sym `%s' in .opd section"),
7599 /* opd entries are always for functions defined in the
7600 current input bfd. If the symbol isn't defined in the
7601 input bfd, then we won't be using the function in this
7602 bfd; It must be defined in a linkonce section in another
7603 bfd, or is weak. It's also possible that we are
7604 discarding the function due to a linker script /DISCARD/,
7605 which we test for via the output_section. */
7606 if (sym_sec->owner != ibfd
7607 || sym_sec->output_section == bfd_abs_section_ptr)
7612 || (rel + 1 == relend && rel->r_offset == offset + 16))
7614 if (sec->size == offset + 24)
7619 if (rel == relend && sec->size == offset + 16)
7627 if (rel->r_offset == offset + 24)
7629 else if (rel->r_offset != offset + 16)
7631 else if (rel + 1 < relend
7632 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7633 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7638 else if (rel + 2 < relend
7639 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7640 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7649 add_aux_fields = non_overlapping && cnt_16b > 0;
7651 if (need_edit || add_aux_fields)
7653 Elf_Internal_Rela *write_rel;
7654 Elf_Internal_Shdr *rel_hdr;
7655 bfd_byte *rptr, *wptr;
7656 bfd_byte *new_contents;
7661 new_contents = NULL;
7662 amt = sec->size * sizeof (long) / 8;
7663 opd = &ppc64_elf_section_data (sec)->u.opd;
7664 opd->adjust = bfd_zalloc (sec->owner, amt);
7665 if (opd->adjust == NULL)
7667 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7669 /* This seems a waste of time as input .opd sections are all
7670 zeros as generated by gcc, but I suppose there's no reason
7671 this will always be so. We might start putting something in
7672 the third word of .opd entries. */
7673 if ((sec->flags & SEC_IN_MEMORY) == 0)
7676 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7681 if (local_syms != NULL
7682 && symtab_hdr->contents != (unsigned char *) local_syms)
7684 if (elf_section_data (sec)->relocs != relstart)
7688 sec->contents = loc;
7689 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7692 elf_section_data (sec)->relocs = relstart;
7694 new_contents = sec->contents;
7697 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7698 if (new_contents == NULL)
7702 wptr = new_contents;
7703 rptr = sec->contents;
7705 write_rel = relstart;
7709 for (rel = relstart; rel < relend; rel++)
7711 unsigned long r_symndx;
7713 struct elf_link_hash_entry *h;
7714 Elf_Internal_Sym *sym;
7716 r_symndx = ELF64_R_SYM (rel->r_info);
7717 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7721 if (rel->r_offset == offset)
7723 struct ppc_link_hash_entry *fdh = NULL;
7725 /* See if the .opd entry is full 24 byte or
7726 16 byte (with fd_aux entry overlapped with next
7729 if ((rel + 2 == relend && sec->size == offset + 16)
7730 || (rel + 3 < relend
7731 && rel[2].r_offset == offset + 16
7732 && rel[3].r_offset == offset + 24
7733 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7734 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7738 && h->root.root.string[0] == '.')
7740 struct ppc_link_hash_table *htab;
7742 htab = ppc_hash_table (info);
7744 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7747 && fdh->elf.root.type != bfd_link_hash_defined
7748 && fdh->elf.root.type != bfd_link_hash_defweak)
7752 skip = (sym_sec->owner != ibfd
7753 || sym_sec->output_section == bfd_abs_section_ptr);
7756 if (fdh != NULL && sym_sec->owner == ibfd)
7758 /* Arrange for the function descriptor sym
7760 fdh->elf.root.u.def.value = 0;
7761 fdh->elf.root.u.def.section = sym_sec;
7763 opd->adjust[rel->r_offset / 8] = -1;
7767 /* We'll be keeping this opd entry. */
7771 /* Redefine the function descriptor symbol to
7772 this location in the opd section. It is
7773 necessary to update the value here rather
7774 than using an array of adjustments as we do
7775 for local symbols, because various places
7776 in the generic ELF code use the value
7777 stored in u.def.value. */
7778 fdh->elf.root.u.def.value = wptr - new_contents;
7779 fdh->adjust_done = 1;
7782 /* Local syms are a bit tricky. We could
7783 tweak them as they can be cached, but
7784 we'd need to look through the local syms
7785 for the function descriptor sym which we
7786 don't have at the moment. So keep an
7787 array of adjustments. */
7788 opd->adjust[rel->r_offset / 8]
7789 = (wptr - new_contents) - (rptr - sec->contents);
7792 memcpy (wptr, rptr, opd_ent_size);
7793 wptr += opd_ent_size;
7794 if (add_aux_fields && opd_ent_size == 16)
7796 memset (wptr, '\0', 8);
7800 rptr += opd_ent_size;
7801 offset += opd_ent_size;
7807 && !info->relocatable
7808 && !dec_dynrel_count (rel->r_info, sec, info,
7814 /* We need to adjust any reloc offsets to point to the
7815 new opd entries. While we're at it, we may as well
7816 remove redundant relocs. */
7817 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7818 if (write_rel != rel)
7819 memcpy (write_rel, rel, sizeof (*rel));
7824 sec->size = wptr - new_contents;
7825 sec->reloc_count = write_rel - relstart;
7828 free (sec->contents);
7829 sec->contents = new_contents;
7832 /* Fudge the header size too, as this is used later in
7833 elf_bfd_final_link if we are emitting relocs. */
7834 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7835 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7838 else if (elf_section_data (sec)->relocs != relstart)
7841 if (local_syms != NULL
7842 && symtab_hdr->contents != (unsigned char *) local_syms)
7844 if (!info->keep_memory)
7847 symtab_hdr->contents = (unsigned char *) local_syms;
7852 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7854 /* If we are doing a final link and the last .opd entry is just 16 byte
7855 long, add a 8 byte padding after it. */
7856 if (need_pad != NULL && !info->relocatable)
7860 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7862 BFD_ASSERT (need_pad->size > 0);
7864 p = bfd_malloc (need_pad->size + 8);
7868 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7869 p, 0, need_pad->size))
7872 need_pad->contents = p;
7873 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7877 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7881 need_pad->contents = p;
7884 memset (need_pad->contents + need_pad->size, 0, 8);
7885 need_pad->size += 8;
7891 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7894 ppc64_elf_tls_setup (struct bfd_link_info *info,
7895 int no_tls_get_addr_opt,
7898 struct ppc_link_hash_table *htab;
7900 htab = ppc_hash_table (info);
7904 if (abiversion (info->output_bfd) == 1)
7908 htab->do_multi_toc = 0;
7909 else if (!htab->do_multi_toc)
7912 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7913 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7914 FALSE, FALSE, TRUE));
7915 /* Move dynamic linking info to the function descriptor sym. */
7916 if (htab->tls_get_addr != NULL)
7917 func_desc_adjust (&htab->tls_get_addr->elf, info);
7918 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7919 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7920 FALSE, FALSE, TRUE));
7921 if (!no_tls_get_addr_opt)
7923 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7925 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7926 FALSE, FALSE, TRUE);
7928 func_desc_adjust (opt, info);
7929 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7930 FALSE, FALSE, TRUE);
7932 && (opt_fd->root.type == bfd_link_hash_defined
7933 || opt_fd->root.type == bfd_link_hash_defweak))
7935 /* If glibc supports an optimized __tls_get_addr call stub,
7936 signalled by the presence of __tls_get_addr_opt, and we'll
7937 be calling __tls_get_addr via a plt call stub, then
7938 make __tls_get_addr point to __tls_get_addr_opt. */
7939 tga_fd = &htab->tls_get_addr_fd->elf;
7940 if (htab->elf.dynamic_sections_created
7942 && (tga_fd->type == STT_FUNC
7943 || tga_fd->needs_plt)
7944 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7945 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7946 && tga_fd->root.type == bfd_link_hash_undefweak)))
7948 struct plt_entry *ent;
7950 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7951 if (ent->plt.refcount > 0)
7955 tga_fd->root.type = bfd_link_hash_indirect;
7956 tga_fd->root.u.i.link = &opt_fd->root;
7957 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7958 if (opt_fd->dynindx != -1)
7960 /* Use __tls_get_addr_opt in dynamic relocations. */
7961 opt_fd->dynindx = -1;
7962 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7963 opt_fd->dynstr_index);
7964 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7967 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7968 tga = &htab->tls_get_addr->elf;
7969 if (opt != NULL && tga != NULL)
7971 tga->root.type = bfd_link_hash_indirect;
7972 tga->root.u.i.link = &opt->root;
7973 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7974 _bfd_elf_link_hash_hide_symbol (info, opt,
7976 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7978 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7979 htab->tls_get_addr_fd->is_func_descriptor = 1;
7980 if (htab->tls_get_addr != NULL)
7982 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7983 htab->tls_get_addr->is_func = 1;
7989 no_tls_get_addr_opt = TRUE;
7991 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7992 return _bfd_elf_tls_setup (info->output_bfd, info);
7995 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7999 branch_reloc_hash_match (const bfd *ibfd,
8000 const Elf_Internal_Rela *rel,
8001 const struct ppc_link_hash_entry *hash1,
8002 const struct ppc_link_hash_entry *hash2)
8004 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8005 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8006 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8008 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8010 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8011 struct elf_link_hash_entry *h;
8013 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8014 h = elf_follow_link (h);
8015 if (h == &hash1->elf || h == &hash2->elf)
8021 /* Run through all the TLS relocs looking for optimization
8022 opportunities. The linker has been hacked (see ppc64elf.em) to do
8023 a preliminary section layout so that we know the TLS segment
8024 offsets. We can't optimize earlier because some optimizations need
8025 to know the tp offset, and we need to optimize before allocating
8026 dynamic relocations. */
8029 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8033 struct ppc_link_hash_table *htab;
8034 unsigned char *toc_ref;
8037 if (info->relocatable || !info->executable)
8040 htab = ppc_hash_table (info);
8044 /* Make two passes over the relocs. On the first pass, mark toc
8045 entries involved with tls relocs, and check that tls relocs
8046 involved in setting up a tls_get_addr call are indeed followed by
8047 such a call. If they are not, we can't do any tls optimization.
8048 On the second pass twiddle tls_mask flags to notify
8049 relocate_section that optimization can be done, and adjust got
8050 and plt refcounts. */
8052 for (pass = 0; pass < 2; ++pass)
8053 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8055 Elf_Internal_Sym *locsyms = NULL;
8056 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8058 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8059 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8061 Elf_Internal_Rela *relstart, *rel, *relend;
8062 bfd_boolean found_tls_get_addr_arg = 0;
8064 /* Read the relocations. */
8065 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8067 if (relstart == NULL)
8070 relend = relstart + sec->reloc_count;
8071 for (rel = relstart; rel < relend; rel++)
8073 enum elf_ppc64_reloc_type r_type;
8074 unsigned long r_symndx;
8075 struct elf_link_hash_entry *h;
8076 Elf_Internal_Sym *sym;
8078 unsigned char *tls_mask;
8079 unsigned char tls_set, tls_clear, tls_type = 0;
8081 bfd_boolean ok_tprel, is_local;
8082 long toc_ref_index = 0;
8083 int expecting_tls_get_addr = 0;
8084 bfd_boolean ret = FALSE;
8086 r_symndx = ELF64_R_SYM (rel->r_info);
8087 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8091 if (elf_section_data (sec)->relocs != relstart)
8093 if (toc_ref != NULL)
8096 && (elf_symtab_hdr (ibfd).contents
8097 != (unsigned char *) locsyms))
8104 if (h->root.type == bfd_link_hash_defined
8105 || h->root.type == bfd_link_hash_defweak)
8106 value = h->root.u.def.value;
8107 else if (h->root.type == bfd_link_hash_undefweak)
8111 found_tls_get_addr_arg = 0;
8116 /* Symbols referenced by TLS relocs must be of type
8117 STT_TLS. So no need for .opd local sym adjust. */
8118 value = sym->st_value;
8127 && h->root.type == bfd_link_hash_undefweak)
8131 value += sym_sec->output_offset;
8132 value += sym_sec->output_section->vma;
8133 value -= htab->elf.tls_sec->vma;
8134 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8135 < (bfd_vma) 1 << 32);
8139 r_type = ELF64_R_TYPE (rel->r_info);
8140 /* If this section has old-style __tls_get_addr calls
8141 without marker relocs, then check that each
8142 __tls_get_addr call reloc is preceded by a reloc
8143 that conceivably belongs to the __tls_get_addr arg
8144 setup insn. If we don't find matching arg setup
8145 relocs, don't do any tls optimization. */
8147 && sec->has_tls_get_addr_call
8149 && (h == &htab->tls_get_addr->elf
8150 || h == &htab->tls_get_addr_fd->elf)
8151 && !found_tls_get_addr_arg
8152 && is_branch_reloc (r_type))
8154 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8155 "TLS optimization disabled\n"),
8156 ibfd, sec, rel->r_offset);
8161 found_tls_get_addr_arg = 0;
8164 case R_PPC64_GOT_TLSLD16:
8165 case R_PPC64_GOT_TLSLD16_LO:
8166 expecting_tls_get_addr = 1;
8167 found_tls_get_addr_arg = 1;
8170 case R_PPC64_GOT_TLSLD16_HI:
8171 case R_PPC64_GOT_TLSLD16_HA:
8172 /* These relocs should never be against a symbol
8173 defined in a shared lib. Leave them alone if
8174 that turns out to be the case. */
8181 tls_type = TLS_TLS | TLS_LD;
8184 case R_PPC64_GOT_TLSGD16:
8185 case R_PPC64_GOT_TLSGD16_LO:
8186 expecting_tls_get_addr = 1;
8187 found_tls_get_addr_arg = 1;
8190 case R_PPC64_GOT_TLSGD16_HI:
8191 case R_PPC64_GOT_TLSGD16_HA:
8197 tls_set = TLS_TLS | TLS_TPRELGD;
8199 tls_type = TLS_TLS | TLS_GD;
8202 case R_PPC64_GOT_TPREL16_DS:
8203 case R_PPC64_GOT_TPREL16_LO_DS:
8204 case R_PPC64_GOT_TPREL16_HI:
8205 case R_PPC64_GOT_TPREL16_HA:
8210 tls_clear = TLS_TPREL;
8211 tls_type = TLS_TLS | TLS_TPREL;
8218 found_tls_get_addr_arg = 1;
8223 case R_PPC64_TOC16_LO:
8224 if (sym_sec == NULL || sym_sec != toc)
8227 /* Mark this toc entry as referenced by a TLS
8228 code sequence. We can do that now in the
8229 case of R_PPC64_TLS, and after checking for
8230 tls_get_addr for the TOC16 relocs. */
8231 if (toc_ref == NULL)
8232 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8233 if (toc_ref == NULL)
8237 value = h->root.u.def.value;
8239 value = sym->st_value;
8240 value += rel->r_addend;
8241 BFD_ASSERT (value < toc->size && value % 8 == 0);
8242 toc_ref_index = (value + toc->output_offset) / 8;
8243 if (r_type == R_PPC64_TLS
8244 || r_type == R_PPC64_TLSGD
8245 || r_type == R_PPC64_TLSLD)
8247 toc_ref[toc_ref_index] = 1;
8251 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8256 expecting_tls_get_addr = 2;
8259 case R_PPC64_TPREL64:
8263 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8268 tls_set = TLS_EXPLICIT;
8269 tls_clear = TLS_TPREL;
8274 case R_PPC64_DTPMOD64:
8278 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8280 if (rel + 1 < relend
8282 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8283 && rel[1].r_offset == rel->r_offset + 8)
8287 tls_set = TLS_EXPLICIT | TLS_GD;
8290 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8299 tls_set = TLS_EXPLICIT;
8310 if (!expecting_tls_get_addr
8311 || !sec->has_tls_get_addr_call)
8314 if (rel + 1 < relend
8315 && branch_reloc_hash_match (ibfd, rel + 1,
8317 htab->tls_get_addr_fd))
8319 if (expecting_tls_get_addr == 2)
8321 /* Check for toc tls entries. */
8322 unsigned char *toc_tls;
8325 retval = get_tls_mask (&toc_tls, NULL, NULL,
8330 if (toc_tls != NULL)
8332 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8333 found_tls_get_addr_arg = 1;
8335 toc_ref[toc_ref_index] = 1;
8341 if (expecting_tls_get_addr != 1)
8344 /* Uh oh, we didn't find the expected call. We
8345 could just mark this symbol to exclude it
8346 from tls optimization but it's safer to skip
8347 the entire optimization. */
8348 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8349 "TLS optimization disabled\n"),
8350 ibfd, sec, rel->r_offset);
8355 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8357 struct plt_entry *ent;
8358 for (ent = htab->tls_get_addr->elf.plt.plist;
8361 if (ent->addend == 0)
8363 if (ent->plt.refcount > 0)
8365 ent->plt.refcount -= 1;
8366 expecting_tls_get_addr = 0;
8372 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8374 struct plt_entry *ent;
8375 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8378 if (ent->addend == 0)
8380 if (ent->plt.refcount > 0)
8381 ent->plt.refcount -= 1;
8389 if ((tls_set & TLS_EXPLICIT) == 0)
8391 struct got_entry *ent;
8393 /* Adjust got entry for this reloc. */
8397 ent = elf_local_got_ents (ibfd)[r_symndx];
8399 for (; ent != NULL; ent = ent->next)
8400 if (ent->addend == rel->r_addend
8401 && ent->owner == ibfd
8402 && ent->tls_type == tls_type)
8409 /* We managed to get rid of a got entry. */
8410 if (ent->got.refcount > 0)
8411 ent->got.refcount -= 1;
8416 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8417 we'll lose one or two dyn relocs. */
8418 if (!dec_dynrel_count (rel->r_info, sec, info,
8422 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8424 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8430 *tls_mask |= tls_set;
8431 *tls_mask &= ~tls_clear;
8434 if (elf_section_data (sec)->relocs != relstart)
8439 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8441 if (!info->keep_memory)
8444 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8448 if (toc_ref != NULL)
8453 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8454 the values of any global symbols in a toc section that has been
8455 edited. Globals in toc sections should be a rarity, so this function
8456 sets a flag if any are found in toc sections other than the one just
8457 edited, so that futher hash table traversals can be avoided. */
8459 struct adjust_toc_info
8462 unsigned long *skip;
8463 bfd_boolean global_toc_syms;
8466 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8469 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8471 struct ppc_link_hash_entry *eh;
8472 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8475 if (h->root.type != bfd_link_hash_defined
8476 && h->root.type != bfd_link_hash_defweak)
8479 eh = (struct ppc_link_hash_entry *) h;
8480 if (eh->adjust_done)
8483 if (eh->elf.root.u.def.section == toc_inf->toc)
8485 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8486 i = toc_inf->toc->rawsize >> 3;
8488 i = eh->elf.root.u.def.value >> 3;
8490 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8492 (*_bfd_error_handler)
8493 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8496 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8497 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8500 eh->elf.root.u.def.value -= toc_inf->skip[i];
8501 eh->adjust_done = 1;
8503 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8504 toc_inf->global_toc_syms = TRUE;
8509 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8512 ok_lo_toc_insn (unsigned int insn)
8514 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8515 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8516 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8517 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8518 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8519 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8520 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8521 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8522 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8523 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8524 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8525 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8526 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8527 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8528 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8530 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8531 && ((insn & 3) == 0 || (insn & 3) == 3))
8532 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8535 /* Examine all relocs referencing .toc sections in order to remove
8536 unused .toc entries. */
8539 ppc64_elf_edit_toc (struct bfd_link_info *info)
8542 struct adjust_toc_info toc_inf;
8543 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8545 htab->do_toc_opt = 1;
8546 toc_inf.global_toc_syms = TRUE;
8547 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8549 asection *toc, *sec;
8550 Elf_Internal_Shdr *symtab_hdr;
8551 Elf_Internal_Sym *local_syms;
8552 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8553 unsigned long *skip, *drop;
8554 unsigned char *used;
8555 unsigned char *keep, last, some_unused;
8557 if (!is_ppc64_elf (ibfd))
8560 toc = bfd_get_section_by_name (ibfd, ".toc");
8563 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8564 || discarded_section (toc))
8569 symtab_hdr = &elf_symtab_hdr (ibfd);
8571 /* Look at sections dropped from the final link. */
8574 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8576 if (sec->reloc_count == 0
8577 || !discarded_section (sec)
8578 || get_opd_info (sec)
8579 || (sec->flags & SEC_ALLOC) == 0
8580 || (sec->flags & SEC_DEBUGGING) != 0)
8583 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8584 if (relstart == NULL)
8587 /* Run through the relocs to see which toc entries might be
8589 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8591 enum elf_ppc64_reloc_type r_type;
8592 unsigned long r_symndx;
8594 struct elf_link_hash_entry *h;
8595 Elf_Internal_Sym *sym;
8598 r_type = ELF64_R_TYPE (rel->r_info);
8605 case R_PPC64_TOC16_LO:
8606 case R_PPC64_TOC16_HI:
8607 case R_PPC64_TOC16_HA:
8608 case R_PPC64_TOC16_DS:
8609 case R_PPC64_TOC16_LO_DS:
8613 r_symndx = ELF64_R_SYM (rel->r_info);
8614 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8622 val = h->root.u.def.value;
8624 val = sym->st_value;
8625 val += rel->r_addend;
8627 if (val >= toc->size)
8630 /* Anything in the toc ought to be aligned to 8 bytes.
8631 If not, don't mark as unused. */
8637 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8642 skip[val >> 3] = ref_from_discarded;
8645 if (elf_section_data (sec)->relocs != relstart)
8649 /* For largetoc loads of address constants, we can convert
8650 . addis rx,2,addr@got@ha
8651 . ld ry,addr@got@l(rx)
8653 . addis rx,2,addr@toc@ha
8654 . addi ry,rx,addr@toc@l
8655 when addr is within 2G of the toc pointer. This then means
8656 that the word storing "addr" in the toc is no longer needed. */
8658 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8659 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8660 && toc->reloc_count != 0)
8662 /* Read toc relocs. */
8663 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8665 if (toc_relocs == NULL)
8668 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8670 enum elf_ppc64_reloc_type r_type;
8671 unsigned long r_symndx;
8673 struct elf_link_hash_entry *h;
8674 Elf_Internal_Sym *sym;
8677 r_type = ELF64_R_TYPE (rel->r_info);
8678 if (r_type != R_PPC64_ADDR64)
8681 r_symndx = ELF64_R_SYM (rel->r_info);
8682 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8687 || discarded_section (sym_sec))
8690 if (!SYMBOL_CALLS_LOCAL (info, h))
8695 if (h->type == STT_GNU_IFUNC)
8697 val = h->root.u.def.value;
8701 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8703 val = sym->st_value;
8705 val += rel->r_addend;
8706 val += sym_sec->output_section->vma + sym_sec->output_offset;
8708 /* We don't yet know the exact toc pointer value, but we
8709 know it will be somewhere in the toc section. Don't
8710 optimize if the difference from any possible toc
8711 pointer is outside [ff..f80008000, 7fff7fff]. */
8712 addr = toc->output_section->vma + TOC_BASE_OFF;
8713 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8716 addr = toc->output_section->vma + toc->output_section->rawsize;
8717 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8722 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8727 skip[rel->r_offset >> 3]
8728 |= can_optimize | ((rel - toc_relocs) << 2);
8735 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8739 if (local_syms != NULL
8740 && symtab_hdr->contents != (unsigned char *) local_syms)
8744 && elf_section_data (sec)->relocs != relstart)
8746 if (toc_relocs != NULL
8747 && elf_section_data (toc)->relocs != toc_relocs)
8754 /* Now check all kept sections that might reference the toc.
8755 Check the toc itself last. */
8756 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8759 sec = (sec == toc ? NULL
8760 : sec->next == NULL ? toc
8761 : sec->next == toc && toc->next ? toc->next
8766 if (sec->reloc_count == 0
8767 || discarded_section (sec)
8768 || get_opd_info (sec)
8769 || (sec->flags & SEC_ALLOC) == 0
8770 || (sec->flags & SEC_DEBUGGING) != 0)
8773 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8775 if (relstart == NULL)
8778 /* Mark toc entries referenced as used. */
8782 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8784 enum elf_ppc64_reloc_type r_type;
8785 unsigned long r_symndx;
8787 struct elf_link_hash_entry *h;
8788 Elf_Internal_Sym *sym;
8790 enum {no_check, check_lo, check_ha} insn_check;
8792 r_type = ELF64_R_TYPE (rel->r_info);
8796 insn_check = no_check;
8799 case R_PPC64_GOT_TLSLD16_HA:
8800 case R_PPC64_GOT_TLSGD16_HA:
8801 case R_PPC64_GOT_TPREL16_HA:
8802 case R_PPC64_GOT_DTPREL16_HA:
8803 case R_PPC64_GOT16_HA:
8804 case R_PPC64_TOC16_HA:
8805 insn_check = check_ha;
8808 case R_PPC64_GOT_TLSLD16_LO:
8809 case R_PPC64_GOT_TLSGD16_LO:
8810 case R_PPC64_GOT_TPREL16_LO_DS:
8811 case R_PPC64_GOT_DTPREL16_LO_DS:
8812 case R_PPC64_GOT16_LO:
8813 case R_PPC64_GOT16_LO_DS:
8814 case R_PPC64_TOC16_LO:
8815 case R_PPC64_TOC16_LO_DS:
8816 insn_check = check_lo;
8820 if (insn_check != no_check)
8822 bfd_vma off = rel->r_offset & ~3;
8823 unsigned char buf[4];
8826 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8831 insn = bfd_get_32 (ibfd, buf);
8832 if (insn_check == check_lo
8833 ? !ok_lo_toc_insn (insn)
8834 : ((insn & ((0x3f << 26) | 0x1f << 16))
8835 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8839 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8840 sprintf (str, "%#08x", insn);
8841 info->callbacks->einfo
8842 (_("%P: %H: toc optimization is not supported for"
8843 " %s instruction.\n"),
8844 ibfd, sec, rel->r_offset & ~3, str);
8851 case R_PPC64_TOC16_LO:
8852 case R_PPC64_TOC16_HI:
8853 case R_PPC64_TOC16_HA:
8854 case R_PPC64_TOC16_DS:
8855 case R_PPC64_TOC16_LO_DS:
8856 /* In case we're taking addresses of toc entries. */
8857 case R_PPC64_ADDR64:
8864 r_symndx = ELF64_R_SYM (rel->r_info);
8865 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8876 val = h->root.u.def.value;
8878 val = sym->st_value;
8879 val += rel->r_addend;
8881 if (val >= toc->size)
8884 if ((skip[val >> 3] & can_optimize) != 0)
8891 case R_PPC64_TOC16_HA:
8894 case R_PPC64_TOC16_LO_DS:
8895 off = rel->r_offset;
8896 off += (bfd_big_endian (ibfd) ? -2 : 3);
8897 if (!bfd_get_section_contents (ibfd, sec, &opc,
8903 if ((opc & (0x3f << 2)) == (58u << 2))
8908 /* Wrong sort of reloc, or not a ld. We may
8909 as well clear ref_from_discarded too. */
8916 /* For the toc section, we only mark as used if this
8917 entry itself isn't unused. */
8918 else if ((used[rel->r_offset >> 3]
8919 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
8922 /* Do all the relocs again, to catch reference
8931 if (elf_section_data (sec)->relocs != relstart)
8935 /* Merge the used and skip arrays. Assume that TOC
8936 doublewords not appearing as either used or unused belong
8937 to to an entry more than one doubleword in size. */
8938 for (drop = skip, keep = used, last = 0, some_unused = 0;
8939 drop < skip + (toc->size + 7) / 8;
8944 *drop &= ~ref_from_discarded;
8945 if ((*drop & can_optimize) != 0)
8949 else if ((*drop & ref_from_discarded) != 0)
8952 last = ref_from_discarded;
8962 bfd_byte *contents, *src;
8964 Elf_Internal_Sym *sym;
8965 bfd_boolean local_toc_syms = FALSE;
8967 /* Shuffle the toc contents, and at the same time convert the
8968 skip array from booleans into offsets. */
8969 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8972 elf_section_data (toc)->this_hdr.contents = contents;
8974 for (src = contents, off = 0, drop = skip;
8975 src < contents + toc->size;
8978 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8983 memcpy (src - off, src, 8);
8987 toc->rawsize = toc->size;
8988 toc->size = src - contents - off;
8990 /* Adjust addends for relocs against the toc section sym,
8991 and optimize any accesses we can. */
8992 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8994 if (sec->reloc_count == 0
8995 || discarded_section (sec))
8998 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9000 if (relstart == NULL)
9003 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9005 enum elf_ppc64_reloc_type r_type;
9006 unsigned long r_symndx;
9008 struct elf_link_hash_entry *h;
9011 r_type = ELF64_R_TYPE (rel->r_info);
9018 case R_PPC64_TOC16_LO:
9019 case R_PPC64_TOC16_HI:
9020 case R_PPC64_TOC16_HA:
9021 case R_PPC64_TOC16_DS:
9022 case R_PPC64_TOC16_LO_DS:
9023 case R_PPC64_ADDR64:
9027 r_symndx = ELF64_R_SYM (rel->r_info);
9028 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9036 val = h->root.u.def.value;
9039 val = sym->st_value;
9041 local_toc_syms = TRUE;
9044 val += rel->r_addend;
9046 if (val > toc->rawsize)
9048 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9050 else if ((skip[val >> 3] & can_optimize) != 0)
9052 Elf_Internal_Rela *tocrel
9053 = toc_relocs + (skip[val >> 3] >> 2);
9054 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9058 case R_PPC64_TOC16_HA:
9059 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9062 case R_PPC64_TOC16_LO_DS:
9063 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9067 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9069 info->callbacks->einfo
9070 (_("%P: %H: %s references "
9071 "optimized away TOC entry\n"),
9072 ibfd, sec, rel->r_offset,
9073 ppc64_elf_howto_table[r_type]->name);
9074 bfd_set_error (bfd_error_bad_value);
9077 rel->r_addend = tocrel->r_addend;
9078 elf_section_data (sec)->relocs = relstart;
9082 if (h != NULL || sym->st_value != 0)
9085 rel->r_addend -= skip[val >> 3];
9086 elf_section_data (sec)->relocs = relstart;
9089 if (elf_section_data (sec)->relocs != relstart)
9093 /* We shouldn't have local or global symbols defined in the TOC,
9094 but handle them anyway. */
9095 if (local_syms != NULL)
9096 for (sym = local_syms;
9097 sym < local_syms + symtab_hdr->sh_info;
9099 if (sym->st_value != 0
9100 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9104 if (sym->st_value > toc->rawsize)
9105 i = toc->rawsize >> 3;
9107 i = sym->st_value >> 3;
9109 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9112 (*_bfd_error_handler)
9113 (_("%s defined on removed toc entry"),
9114 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9117 while ((skip[i] & (ref_from_discarded | can_optimize)));
9118 sym->st_value = (bfd_vma) i << 3;
9121 sym->st_value -= skip[i];
9122 symtab_hdr->contents = (unsigned char *) local_syms;
9125 /* Adjust any global syms defined in this toc input section. */
9126 if (toc_inf.global_toc_syms)
9129 toc_inf.skip = skip;
9130 toc_inf.global_toc_syms = FALSE;
9131 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9135 if (toc->reloc_count != 0)
9137 Elf_Internal_Shdr *rel_hdr;
9138 Elf_Internal_Rela *wrel;
9141 /* Remove unused toc relocs, and adjust those we keep. */
9142 if (toc_relocs == NULL)
9143 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9145 if (toc_relocs == NULL)
9149 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9150 if ((skip[rel->r_offset >> 3]
9151 & (ref_from_discarded | can_optimize)) == 0)
9153 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9154 wrel->r_info = rel->r_info;
9155 wrel->r_addend = rel->r_addend;
9158 else if (!dec_dynrel_count (rel->r_info, toc, info,
9159 &local_syms, NULL, NULL))
9162 elf_section_data (toc)->relocs = toc_relocs;
9163 toc->reloc_count = wrel - toc_relocs;
9164 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9165 sz = rel_hdr->sh_entsize;
9166 rel_hdr->sh_size = toc->reloc_count * sz;
9169 else if (toc_relocs != NULL
9170 && elf_section_data (toc)->relocs != toc_relocs)
9173 if (local_syms != NULL
9174 && symtab_hdr->contents != (unsigned char *) local_syms)
9176 if (!info->keep_memory)
9179 symtab_hdr->contents = (unsigned char *) local_syms;
9187 /* Return true iff input section I references the TOC using
9188 instructions limited to +/-32k offsets. */
9191 ppc64_elf_has_small_toc_reloc (asection *i)
9193 return (is_ppc64_elf (i->owner)
9194 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9197 /* Allocate space for one GOT entry. */
9200 allocate_got (struct elf_link_hash_entry *h,
9201 struct bfd_link_info *info,
9202 struct got_entry *gent)
9204 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9206 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9207 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9209 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9210 ? 2 : 1) * sizeof (Elf64_External_Rela);
9211 asection *got = ppc64_elf_tdata (gent->owner)->got;
9213 gent->got.offset = got->size;
9214 got->size += entsize;
9216 dyn = htab->elf.dynamic_sections_created;
9217 if (h->type == STT_GNU_IFUNC)
9219 htab->elf.irelplt->size += rentsize;
9220 htab->got_reli_size += rentsize;
9222 else if ((info->shared
9223 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9224 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9225 || h->root.type != bfd_link_hash_undefweak))
9227 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9228 relgot->size += rentsize;
9232 /* This function merges got entries in the same toc group. */
9235 merge_got_entries (struct got_entry **pent)
9237 struct got_entry *ent, *ent2;
9239 for (ent = *pent; ent != NULL; ent = ent->next)
9240 if (!ent->is_indirect)
9241 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9242 if (!ent2->is_indirect
9243 && ent2->addend == ent->addend
9244 && ent2->tls_type == ent->tls_type
9245 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9247 ent2->is_indirect = TRUE;
9248 ent2->got.ent = ent;
9252 /* Allocate space in .plt, .got and associated reloc sections for
9256 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9258 struct bfd_link_info *info;
9259 struct ppc_link_hash_table *htab;
9261 struct ppc_link_hash_entry *eh;
9262 struct elf_dyn_relocs *p;
9263 struct got_entry **pgent, *gent;
9265 if (h->root.type == bfd_link_hash_indirect)
9268 info = (struct bfd_link_info *) inf;
9269 htab = ppc_hash_table (info);
9273 if ((htab->elf.dynamic_sections_created
9275 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9276 || h->type == STT_GNU_IFUNC)
9278 struct plt_entry *pent;
9279 bfd_boolean doneone = FALSE;
9280 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9281 if (pent->plt.refcount > 0)
9283 if (!htab->elf.dynamic_sections_created
9284 || h->dynindx == -1)
9287 pent->plt.offset = s->size;
9288 s->size += PLT_ENTRY_SIZE (htab);
9289 s = htab->elf.irelplt;
9293 /* If this is the first .plt entry, make room for the special
9297 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9299 pent->plt.offset = s->size;
9301 /* Make room for this entry. */
9302 s->size += PLT_ENTRY_SIZE (htab);
9304 /* Make room for the .glink code. */
9307 s->size += GLINK_CALL_STUB_SIZE;
9310 /* We need bigger stubs past index 32767. */
9311 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9318 /* We also need to make an entry in the .rela.plt section. */
9319 s = htab->elf.srelplt;
9321 s->size += sizeof (Elf64_External_Rela);
9325 pent->plt.offset = (bfd_vma) -1;
9328 h->plt.plist = NULL;
9334 h->plt.plist = NULL;
9338 eh = (struct ppc_link_hash_entry *) h;
9339 /* Run through the TLS GD got entries first if we're changing them
9341 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9342 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9343 if (gent->got.refcount > 0
9344 && (gent->tls_type & TLS_GD) != 0)
9346 /* This was a GD entry that has been converted to TPREL. If
9347 there happens to be a TPREL entry we can use that one. */
9348 struct got_entry *ent;
9349 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9350 if (ent->got.refcount > 0
9351 && (ent->tls_type & TLS_TPREL) != 0
9352 && ent->addend == gent->addend
9353 && ent->owner == gent->owner)
9355 gent->got.refcount = 0;
9359 /* If not, then we'll be using our own TPREL entry. */
9360 if (gent->got.refcount != 0)
9361 gent->tls_type = TLS_TLS | TLS_TPREL;
9364 /* Remove any list entry that won't generate a word in the GOT before
9365 we call merge_got_entries. Otherwise we risk merging to empty
9367 pgent = &h->got.glist;
9368 while ((gent = *pgent) != NULL)
9369 if (gent->got.refcount > 0)
9371 if ((gent->tls_type & TLS_LD) != 0
9374 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9375 *pgent = gent->next;
9378 pgent = &gent->next;
9381 *pgent = gent->next;
9383 if (!htab->do_multi_toc)
9384 merge_got_entries (&h->got.glist);
9386 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9387 if (!gent->is_indirect)
9389 /* Make sure this symbol is output as a dynamic symbol.
9390 Undefined weak syms won't yet be marked as dynamic,
9391 nor will all TLS symbols. */
9392 if (h->dynindx == -1
9394 && h->type != STT_GNU_IFUNC
9395 && htab->elf.dynamic_sections_created)
9397 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9401 if (!is_ppc64_elf (gent->owner))
9404 allocate_got (h, info, gent);
9407 if (eh->dyn_relocs == NULL
9408 || (!htab->elf.dynamic_sections_created
9409 && (h->type != STT_GNU_IFUNC
9410 || !htab->opd_abi)))
9413 /* In the shared -Bsymbolic case, discard space allocated for
9414 dynamic pc-relative relocs against symbols which turn out to be
9415 defined in regular objects. For the normal shared case, discard
9416 space for relocs that have become local due to symbol visibility
9421 /* Relocs that use pc_count are those that appear on a call insn,
9422 or certain REL relocs (see must_be_dyn_reloc) that can be
9423 generated via assembly. We want calls to protected symbols to
9424 resolve directly to the function rather than going via the plt.
9425 If people want function pointer comparisons to work as expected
9426 then they should avoid writing weird assembly. */
9427 if (SYMBOL_CALLS_LOCAL (info, h))
9429 struct elf_dyn_relocs **pp;
9431 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9433 p->count -= p->pc_count;
9442 /* Also discard relocs on undefined weak syms with non-default
9444 if (eh->dyn_relocs != NULL
9445 && h->root.type == bfd_link_hash_undefweak)
9447 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9448 eh->dyn_relocs = NULL;
9450 /* Make sure this symbol is output as a dynamic symbol.
9451 Undefined weak syms won't yet be marked as dynamic. */
9452 else if (h->dynindx == -1
9453 && !h->forced_local)
9455 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9460 else if (h->type == STT_GNU_IFUNC)
9462 if (!h->non_got_ref)
9463 eh->dyn_relocs = NULL;
9465 else if (ELIMINATE_COPY_RELOCS)
9467 /* For the non-shared case, discard space for relocs against
9468 symbols which turn out to need copy relocs or are not
9474 /* Make sure this symbol is output as a dynamic symbol.
9475 Undefined weak syms won't yet be marked as dynamic. */
9476 if (h->dynindx == -1
9477 && !h->forced_local)
9479 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9483 /* If that succeeded, we know we'll be keeping all the
9485 if (h->dynindx != -1)
9489 eh->dyn_relocs = NULL;
9494 /* Finally, allocate space. */
9495 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9497 asection *sreloc = elf_section_data (p->sec)->sreloc;
9498 if (eh->elf.type == STT_GNU_IFUNC)
9499 sreloc = htab->elf.irelplt;
9500 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9506 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9507 to set up space for global entry stubs. These are put in glink,
9508 after the branch table. */
9511 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9513 struct bfd_link_info *info;
9514 struct ppc_link_hash_table *htab;
9515 struct plt_entry *pent;
9518 if (h->root.type == bfd_link_hash_indirect)
9521 if (!h->pointer_equality_needed)
9528 htab = ppc_hash_table (info);
9533 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9534 if (pent->plt.offset != (bfd_vma) -1
9535 && pent->addend == 0)
9537 s->size = (s->size + 15) & -16;
9544 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9545 read-only sections. */
9548 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9550 if (h->root.type == bfd_link_hash_indirect)
9553 if (readonly_dynrelocs (h))
9555 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9557 /* Not an error, just cut short the traversal. */
9563 /* Set the sizes of the dynamic sections. */
9566 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9567 struct bfd_link_info *info)
9569 struct ppc_link_hash_table *htab;
9574 struct got_entry *first_tlsld;
9576 htab = ppc_hash_table (info);
9580 dynobj = htab->elf.dynobj;
9584 if (htab->elf.dynamic_sections_created)
9586 /* Set the contents of the .interp section to the interpreter. */
9587 if (info->executable)
9589 s = bfd_get_linker_section (dynobj, ".interp");
9592 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9593 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9597 /* Set up .got offsets for local syms, and space for local dynamic
9599 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9601 struct got_entry **lgot_ents;
9602 struct got_entry **end_lgot_ents;
9603 struct plt_entry **local_plt;
9604 struct plt_entry **end_local_plt;
9605 unsigned char *lgot_masks;
9606 bfd_size_type locsymcount;
9607 Elf_Internal_Shdr *symtab_hdr;
9609 if (!is_ppc64_elf (ibfd))
9612 for (s = ibfd->sections; s != NULL; s = s->next)
9614 struct ppc_dyn_relocs *p;
9616 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9618 if (!bfd_is_abs_section (p->sec)
9619 && bfd_is_abs_section (p->sec->output_section))
9621 /* Input section has been discarded, either because
9622 it is a copy of a linkonce section or due to
9623 linker script /DISCARD/, so we'll be discarding
9626 else if (p->count != 0)
9628 asection *srel = elf_section_data (p->sec)->sreloc;
9630 srel = htab->elf.irelplt;
9631 srel->size += p->count * sizeof (Elf64_External_Rela);
9632 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9633 info->flags |= DF_TEXTREL;
9638 lgot_ents = elf_local_got_ents (ibfd);
9642 symtab_hdr = &elf_symtab_hdr (ibfd);
9643 locsymcount = symtab_hdr->sh_info;
9644 end_lgot_ents = lgot_ents + locsymcount;
9645 local_plt = (struct plt_entry **) end_lgot_ents;
9646 end_local_plt = local_plt + locsymcount;
9647 lgot_masks = (unsigned char *) end_local_plt;
9648 s = ppc64_elf_tdata (ibfd)->got;
9649 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9651 struct got_entry **pent, *ent;
9654 while ((ent = *pent) != NULL)
9655 if (ent->got.refcount > 0)
9657 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9659 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9664 unsigned int ent_size = 8;
9665 unsigned int rel_size = sizeof (Elf64_External_Rela);
9667 ent->got.offset = s->size;
9668 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9673 s->size += ent_size;
9674 if ((*lgot_masks & PLT_IFUNC) != 0)
9676 htab->elf.irelplt->size += rel_size;
9677 htab->got_reli_size += rel_size;
9679 else if (info->shared)
9681 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9682 srel->size += rel_size;
9691 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9692 for (; local_plt < end_local_plt; ++local_plt)
9694 struct plt_entry *ent;
9696 for (ent = *local_plt; ent != NULL; ent = ent->next)
9697 if (ent->plt.refcount > 0)
9700 ent->plt.offset = s->size;
9701 s->size += PLT_ENTRY_SIZE (htab);
9703 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
9706 ent->plt.offset = (bfd_vma) -1;
9710 /* Allocate global sym .plt and .got entries, and space for global
9711 sym dynamic relocs. */
9712 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9713 /* Stash the end of glink branch table. */
9714 if (htab->glink != NULL)
9715 htab->glink->rawsize = htab->glink->size;
9717 if (!htab->opd_abi && !info->shared)
9718 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9721 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9723 struct got_entry *ent;
9725 if (!is_ppc64_elf (ibfd))
9728 ent = ppc64_tlsld_got (ibfd);
9729 if (ent->got.refcount > 0)
9731 if (!htab->do_multi_toc && first_tlsld != NULL)
9733 ent->is_indirect = TRUE;
9734 ent->got.ent = first_tlsld;
9738 if (first_tlsld == NULL)
9740 s = ppc64_elf_tdata (ibfd)->got;
9741 ent->got.offset = s->size;
9746 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9747 srel->size += sizeof (Elf64_External_Rela);
9752 ent->got.offset = (bfd_vma) -1;
9755 /* We now have determined the sizes of the various dynamic sections.
9756 Allocate memory for them. */
9758 for (s = dynobj->sections; s != NULL; s = s->next)
9760 if ((s->flags & SEC_LINKER_CREATED) == 0)
9763 if (s == htab->brlt || s == htab->relbrlt)
9764 /* These haven't been allocated yet; don't strip. */
9766 else if (s == htab->elf.sgot
9767 || s == htab->elf.splt
9768 || s == htab->elf.iplt
9770 || s == htab->dynbss)
9772 /* Strip this section if we don't need it; see the
9775 else if (s == htab->glink_eh_frame)
9777 if (!bfd_is_abs_section (s->output_section))
9778 /* Not sized yet. */
9781 else if (CONST_STRNEQ (s->name, ".rela"))
9785 if (s != htab->elf.srelplt)
9788 /* We use the reloc_count field as a counter if we need
9789 to copy relocs into the output file. */
9795 /* It's not one of our sections, so don't allocate space. */
9801 /* If we don't need this section, strip it from the
9802 output file. This is mostly to handle .rela.bss and
9803 .rela.plt. We must create both sections in
9804 create_dynamic_sections, because they must be created
9805 before the linker maps input sections to output
9806 sections. The linker does that before
9807 adjust_dynamic_symbol is called, and it is that
9808 function which decides whether anything needs to go
9809 into these sections. */
9810 s->flags |= SEC_EXCLUDE;
9814 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9817 /* Allocate memory for the section contents. We use bfd_zalloc
9818 here in case unused entries are not reclaimed before the
9819 section's contents are written out. This should not happen,
9820 but this way if it does we get a R_PPC64_NONE reloc in .rela
9821 sections instead of garbage.
9822 We also rely on the section contents being zero when writing
9824 s->contents = bfd_zalloc (dynobj, s->size);
9825 if (s->contents == NULL)
9829 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9831 if (!is_ppc64_elf (ibfd))
9834 s = ppc64_elf_tdata (ibfd)->got;
9835 if (s != NULL && s != htab->elf.sgot)
9838 s->flags |= SEC_EXCLUDE;
9841 s->contents = bfd_zalloc (ibfd, s->size);
9842 if (s->contents == NULL)
9846 s = ppc64_elf_tdata (ibfd)->relgot;
9850 s->flags |= SEC_EXCLUDE;
9853 s->contents = bfd_zalloc (ibfd, s->size);
9854 if (s->contents == NULL)
9862 if (htab->elf.dynamic_sections_created)
9864 bfd_boolean tls_opt;
9866 /* Add some entries to the .dynamic section. We fill in the
9867 values later, in ppc64_elf_finish_dynamic_sections, but we
9868 must add the entries now so that we get the correct size for
9869 the .dynamic section. The DT_DEBUG entry is filled in by the
9870 dynamic linker and used by the debugger. */
9871 #define add_dynamic_entry(TAG, VAL) \
9872 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9874 if (info->executable)
9876 if (!add_dynamic_entry (DT_DEBUG, 0))
9880 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
9882 if (!add_dynamic_entry (DT_PLTGOT, 0)
9883 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9884 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9885 || !add_dynamic_entry (DT_JMPREL, 0)
9886 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9890 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
9892 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9893 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9897 tls_opt = (!htab->no_tls_get_addr_opt
9898 && htab->tls_get_addr_fd != NULL
9899 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
9900 if (tls_opt || !htab->opd_abi)
9902 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
9908 if (!add_dynamic_entry (DT_RELA, 0)
9909 || !add_dynamic_entry (DT_RELASZ, 0)
9910 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9913 /* If any dynamic relocs apply to a read-only section,
9914 then we need a DT_TEXTREL entry. */
9915 if ((info->flags & DF_TEXTREL) == 0)
9916 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
9918 if ((info->flags & DF_TEXTREL) != 0)
9920 if (!add_dynamic_entry (DT_TEXTREL, 0))
9925 #undef add_dynamic_entry
9930 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
9933 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
9935 if (h->plt.plist != NULL
9937 && !h->pointer_equality_needed)
9940 return _bfd_elf_hash_symbol (h);
9943 /* Determine the type of stub needed, if any, for a call. */
9945 static inline enum ppc_stub_type
9946 ppc_type_of_stub (asection *input_sec,
9947 const Elf_Internal_Rela *rel,
9948 struct ppc_link_hash_entry **hash,
9949 struct plt_entry **plt_ent,
9950 bfd_vma destination,
9951 unsigned long local_off)
9953 struct ppc_link_hash_entry *h = *hash;
9955 bfd_vma branch_offset;
9956 bfd_vma max_branch_offset;
9957 enum elf_ppc64_reloc_type r_type;
9961 struct plt_entry *ent;
9962 struct ppc_link_hash_entry *fdh = h;
9964 && h->oh->is_func_descriptor)
9966 fdh = ppc_follow_link (h->oh);
9970 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9971 if (ent->addend == rel->r_addend
9972 && ent->plt.offset != (bfd_vma) -1)
9975 return ppc_stub_plt_call;
9978 /* Here, we know we don't have a plt entry. If we don't have a
9979 either a defined function descriptor or a defined entry symbol
9980 in a regular object file, then it is pointless trying to make
9981 any other type of stub. */
9982 if (!is_static_defined (&fdh->elf)
9983 && !is_static_defined (&h->elf))
9984 return ppc_stub_none;
9986 else if (elf_local_got_ents (input_sec->owner) != NULL)
9988 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9989 struct plt_entry **local_plt = (struct plt_entry **)
9990 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9991 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9993 if (local_plt[r_symndx] != NULL)
9995 struct plt_entry *ent;
9997 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9998 if (ent->addend == rel->r_addend
9999 && ent->plt.offset != (bfd_vma) -1)
10002 return ppc_stub_plt_call;
10007 /* Determine where the call point is. */
10008 location = (input_sec->output_offset
10009 + input_sec->output_section->vma
10012 branch_offset = destination - location;
10013 r_type = ELF64_R_TYPE (rel->r_info);
10015 /* Determine if a long branch stub is needed. */
10016 max_branch_offset = 1 << 25;
10017 if (r_type != R_PPC64_REL24)
10018 max_branch_offset = 1 << 15;
10020 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10021 /* We need a stub. Figure out whether a long_branch or plt_branch
10022 is needed later. */
10023 return ppc_stub_long_branch;
10025 return ppc_stub_none;
10028 /* With power7 weakly ordered memory model, it is possible for ld.so
10029 to update a plt entry in one thread and have another thread see a
10030 stale zero toc entry. To avoid this we need some sort of acquire
10031 barrier in the call stub. One solution is to make the load of the
10032 toc word seem to appear to depend on the load of the function entry
10033 word. Another solution is to test for r2 being zero, and branch to
10034 the appropriate glink entry if so.
10036 . fake dep barrier compare
10037 . ld 12,xxx(2) ld 12,xxx(2)
10038 . mtctr 12 mtctr 12
10039 . xor 11,12,12 ld 2,xxx+8(2)
10040 . add 2,2,11 cmpldi 2,0
10041 . ld 2,xxx+8(2) bnectr+
10042 . bctr b <glink_entry>
10044 The solution involving the compare turns out to be faster, so
10045 that's what we use unless the branch won't reach. */
10047 #define ALWAYS_USE_FAKE_DEP 0
10048 #define ALWAYS_EMIT_R2SAVE 0
10050 #define PPC_LO(v) ((v) & 0xffff)
10051 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10052 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10054 static inline unsigned int
10055 plt_stub_size (struct ppc_link_hash_table *htab,
10056 struct ppc_stub_hash_entry *stub_entry,
10059 unsigned size = 12;
10061 if (ALWAYS_EMIT_R2SAVE
10062 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10064 if (PPC_HA (off) != 0)
10069 if (htab->plt_static_chain)
10071 if (htab->plt_thread_safe)
10073 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
10076 if (stub_entry->h != NULL
10077 && (stub_entry->h == htab->tls_get_addr_fd
10078 || stub_entry->h == htab->tls_get_addr)
10079 && !htab->no_tls_get_addr_opt)
10084 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10085 then return the padding needed to do so. */
10086 static inline unsigned int
10087 plt_stub_pad (struct ppc_link_hash_table *htab,
10088 struct ppc_stub_hash_entry *stub_entry,
10091 int stub_align = 1 << htab->plt_stub_align;
10092 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10093 bfd_vma stub_off = stub_entry->stub_sec->size;
10095 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10096 > (stub_size & -stub_align))
10097 return stub_align - (stub_off & (stub_align - 1));
10101 /* Build a .plt call stub. */
10103 static inline bfd_byte *
10104 build_plt_stub (struct ppc_link_hash_table *htab,
10105 struct ppc_stub_hash_entry *stub_entry,
10106 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10108 bfd *obfd = htab->stub_bfd;
10109 bfd_boolean plt_load_toc = htab->opd_abi;
10110 bfd_boolean plt_static_chain = htab->plt_static_chain;
10111 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
10112 bfd_boolean use_fake_dep = plt_thread_safe;
10113 bfd_vma cmp_branch_off = 0;
10115 if (!ALWAYS_USE_FAKE_DEP
10118 && !(stub_entry->h != NULL
10119 && (stub_entry->h == htab->tls_get_addr_fd
10120 || stub_entry->h == htab->tls_get_addr)
10121 && !htab->no_tls_get_addr_opt))
10123 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10124 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10125 / PLT_ENTRY_SIZE (htab));
10126 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10129 if (pltindex > 32768)
10130 glinkoff += (pltindex - 32768) * 4;
10132 + htab->glink->output_offset
10133 + htab->glink->output_section->vma);
10134 from = (p - stub_entry->stub_sec->contents
10135 + 4 * (ALWAYS_EMIT_R2SAVE
10136 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10137 + 4 * (PPC_HA (offset) != 0)
10138 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10139 != PPC_HA (offset))
10140 + 4 * (plt_static_chain != 0)
10142 + stub_entry->stub_sec->output_offset
10143 + stub_entry->stub_sec->output_section->vma);
10144 cmp_branch_off = to - from;
10145 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10148 if (PPC_HA (offset) != 0)
10152 if (ALWAYS_EMIT_R2SAVE
10153 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10154 r[0].r_offset += 4;
10155 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10156 r[1].r_offset = r[0].r_offset + 4;
10157 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10158 r[1].r_addend = r[0].r_addend;
10161 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10163 r[2].r_offset = r[1].r_offset + 4;
10164 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10165 r[2].r_addend = r[0].r_addend;
10169 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10170 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10171 r[2].r_addend = r[0].r_addend + 8;
10172 if (plt_static_chain)
10174 r[3].r_offset = r[2].r_offset + 4;
10175 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10176 r[3].r_addend = r[0].r_addend + 16;
10181 if (ALWAYS_EMIT_R2SAVE
10182 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10183 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10184 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10185 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10187 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10189 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10192 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10197 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10198 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10200 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10201 if (plt_static_chain)
10202 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10209 if (ALWAYS_EMIT_R2SAVE
10210 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10211 r[0].r_offset += 4;
10212 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10215 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10217 r[1].r_offset = r[0].r_offset + 4;
10218 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10219 r[1].r_addend = r[0].r_addend;
10223 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10224 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10225 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10226 if (plt_static_chain)
10228 r[2].r_offset = r[1].r_offset + 4;
10229 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10230 r[2].r_addend = r[0].r_addend + 8;
10235 if (ALWAYS_EMIT_R2SAVE
10236 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10237 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10238 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10240 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10242 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10245 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10250 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10251 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10253 if (plt_static_chain)
10254 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10255 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10258 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10260 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10261 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10262 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10265 bfd_put_32 (obfd, BCTR, p), p += 4;
10269 /* Build a special .plt call stub for __tls_get_addr. */
10271 #define LD_R11_0R3 0xe9630000
10272 #define LD_R12_0R3 0xe9830000
10273 #define MR_R0_R3 0x7c601b78
10274 #define CMPDI_R11_0 0x2c2b0000
10275 #define ADD_R3_R12_R13 0x7c6c6a14
10276 #define BEQLR 0x4d820020
10277 #define MR_R3_R0 0x7c030378
10278 #define STD_R11_0R1 0xf9610000
10279 #define BCTRL 0x4e800421
10280 #define LD_R11_0R1 0xe9610000
10281 #define MTLR_R11 0x7d6803a6
10283 static inline bfd_byte *
10284 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10285 struct ppc_stub_hash_entry *stub_entry,
10286 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10288 bfd *obfd = htab->stub_bfd;
10290 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10291 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10292 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10293 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10294 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10295 bfd_put_32 (obfd, BEQLR, p), p += 4;
10296 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10297 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10298 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10301 r[0].r_offset += 9 * 4;
10302 p = build_plt_stub (htab, stub_entry, p, offset, r);
10303 bfd_put_32 (obfd, BCTRL, p - 4);
10305 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10306 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10307 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10308 bfd_put_32 (obfd, BLR, p), p += 4;
10313 static Elf_Internal_Rela *
10314 get_relocs (asection *sec, int count)
10316 Elf_Internal_Rela *relocs;
10317 struct bfd_elf_section_data *elfsec_data;
10319 elfsec_data = elf_section_data (sec);
10320 relocs = elfsec_data->relocs;
10321 if (relocs == NULL)
10323 bfd_size_type relsize;
10324 relsize = sec->reloc_count * sizeof (*relocs);
10325 relocs = bfd_alloc (sec->owner, relsize);
10326 if (relocs == NULL)
10328 elfsec_data->relocs = relocs;
10329 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10330 sizeof (Elf_Internal_Shdr));
10331 if (elfsec_data->rela.hdr == NULL)
10333 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10334 * sizeof (Elf64_External_Rela));
10335 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10336 sec->reloc_count = 0;
10338 relocs += sec->reloc_count;
10339 sec->reloc_count += count;
10344 get_r2off (struct bfd_link_info *info,
10345 struct ppc_stub_hash_entry *stub_entry)
10347 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10348 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10352 /* Support linking -R objects. Get the toc pointer from the
10355 if (!htab->opd_abi)
10357 asection *opd = stub_entry->h->elf.root.u.def.section;
10358 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10360 if (strcmp (opd->name, ".opd") != 0
10361 || opd->reloc_count != 0)
10363 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10364 stub_entry->h->elf.root.root.string);
10365 bfd_set_error (bfd_error_bad_value);
10368 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10370 r2off = bfd_get_64 (opd->owner, buf);
10371 r2off -= elf_gp (info->output_bfd);
10373 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10378 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10380 struct ppc_stub_hash_entry *stub_entry;
10381 struct ppc_branch_hash_entry *br_entry;
10382 struct bfd_link_info *info;
10383 struct ppc_link_hash_table *htab;
10388 Elf_Internal_Rela *r;
10391 /* Massage our args to the form they really have. */
10392 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10395 htab = ppc_hash_table (info);
10399 /* Make a note of the offset within the stubs for this entry. */
10400 stub_entry->stub_offset = stub_entry->stub_sec->size;
10401 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10403 htab->stub_count[stub_entry->stub_type - 1] += 1;
10404 switch (stub_entry->stub_type)
10406 case ppc_stub_long_branch:
10407 case ppc_stub_long_branch_r2off:
10408 /* Branches are relative. This is where we are going to. */
10409 dest = (stub_entry->target_value
10410 + stub_entry->target_section->output_offset
10411 + stub_entry->target_section->output_section->vma);
10412 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10415 /* And this is where we are coming from. */
10416 off -= (stub_entry->stub_offset
10417 + stub_entry->stub_sec->output_offset
10418 + stub_entry->stub_sec->output_section->vma);
10421 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10423 bfd_vma r2off = get_r2off (info, stub_entry);
10427 htab->stub_error = TRUE;
10430 bfd_put_32 (htab->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10433 if (PPC_HA (r2off) != 0)
10436 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10439 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10443 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10445 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10447 info->callbacks->einfo
10448 (_("%P: long branch stub `%s' offset overflow\n"),
10449 stub_entry->root.string);
10450 htab->stub_error = TRUE;
10454 if (info->emitrelocations)
10456 r = get_relocs (stub_entry->stub_sec, 1);
10459 r->r_offset = loc - stub_entry->stub_sec->contents;
10460 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10461 r->r_addend = dest;
10462 if (stub_entry->h != NULL)
10464 struct elf_link_hash_entry **hashes;
10465 unsigned long symndx;
10466 struct ppc_link_hash_entry *h;
10468 hashes = elf_sym_hashes (htab->stub_bfd);
10469 if (hashes == NULL)
10471 bfd_size_type hsize;
10473 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10474 hashes = bfd_zalloc (htab->stub_bfd, hsize);
10475 if (hashes == NULL)
10477 elf_sym_hashes (htab->stub_bfd) = hashes;
10478 htab->stub_globals = 1;
10480 symndx = htab->stub_globals++;
10482 hashes[symndx] = &h->elf;
10483 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10484 if (h->oh != NULL && h->oh->is_func)
10485 h = ppc_follow_link (h->oh);
10486 if (h->elf.root.u.def.section != stub_entry->target_section)
10487 /* H is an opd symbol. The addend must be zero. */
10491 off = (h->elf.root.u.def.value
10492 + h->elf.root.u.def.section->output_offset
10493 + h->elf.root.u.def.section->output_section->vma);
10494 r->r_addend -= off;
10500 case ppc_stub_plt_branch:
10501 case ppc_stub_plt_branch_r2off:
10502 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10503 stub_entry->root.string + 9,
10505 if (br_entry == NULL)
10507 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10508 stub_entry->root.string);
10509 htab->stub_error = TRUE;
10513 dest = (stub_entry->target_value
10514 + stub_entry->target_section->output_offset
10515 + stub_entry->target_section->output_section->vma);
10516 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10517 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10519 bfd_put_64 (htab->brlt->owner, dest,
10520 htab->brlt->contents + br_entry->offset);
10522 if (br_entry->iter == htab->stub_iteration)
10524 br_entry->iter = 0;
10526 if (htab->relbrlt != NULL)
10528 /* Create a reloc for the branch lookup table entry. */
10529 Elf_Internal_Rela rela;
10532 rela.r_offset = (br_entry->offset
10533 + htab->brlt->output_offset
10534 + htab->brlt->output_section->vma);
10535 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10536 rela.r_addend = dest;
10538 rl = htab->relbrlt->contents;
10539 rl += (htab->relbrlt->reloc_count++
10540 * sizeof (Elf64_External_Rela));
10541 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10543 else if (info->emitrelocations)
10545 r = get_relocs (htab->brlt, 1);
10548 /* brlt, being SEC_LINKER_CREATED does not go through the
10549 normal reloc processing. Symbols and offsets are not
10550 translated from input file to output file form, so
10551 set up the offset per the output file. */
10552 r->r_offset = (br_entry->offset
10553 + htab->brlt->output_offset
10554 + htab->brlt->output_section->vma);
10555 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10556 r->r_addend = dest;
10560 dest = (br_entry->offset
10561 + htab->brlt->output_offset
10562 + htab->brlt->output_section->vma);
10565 - elf_gp (htab->brlt->output_section->owner)
10566 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10568 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10570 info->callbacks->einfo
10571 (_("%P: linkage table error against `%T'\n"),
10572 stub_entry->root.string);
10573 bfd_set_error (bfd_error_bad_value);
10574 htab->stub_error = TRUE;
10578 if (info->emitrelocations)
10580 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10583 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10584 if (bfd_big_endian (info->output_bfd))
10585 r[0].r_offset += 2;
10586 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off
10588 r[0].r_offset += 4;
10589 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10590 r[0].r_addend = dest;
10591 if (PPC_HA (off) != 0)
10593 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10594 r[1].r_offset = r[0].r_offset + 4;
10595 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10596 r[1].r_addend = r[0].r_addend;
10600 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off
10603 if (PPC_HA (off) != 0)
10606 bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc);
10608 bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc);
10613 bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10618 bfd_vma r2off = get_r2off (info, stub_entry);
10622 htab->stub_error = TRUE;
10626 bfd_put_32 (htab->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10629 if (PPC_HA (off) != 0)
10632 bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc);
10634 bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc);
10639 bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10643 if (PPC_HA (r2off) != 0)
10646 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10649 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10652 bfd_put_32 (htab->stub_bfd, MTCTR_R12, loc);
10654 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10657 case ppc_stub_plt_call:
10658 case ppc_stub_plt_call_r2save:
10659 if (stub_entry->h != NULL
10660 && stub_entry->h->is_func_descriptor
10661 && stub_entry->h->oh != NULL)
10663 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10665 /* If the old-ABI "dot-symbol" is undefined make it weak so
10666 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10667 FIXME: We used to define the symbol on one of the call
10668 stubs instead, which is why we test symbol section id
10669 against htab->top_id in various places. Likely all
10670 these checks could now disappear. */
10671 if (fh->elf.root.type == bfd_link_hash_undefined)
10672 fh->elf.root.type = bfd_link_hash_undefweak;
10673 /* Stop undo_symbol_twiddle changing it back to undefined. */
10674 fh->was_undefined = 0;
10677 /* Now build the stub. */
10678 dest = stub_entry->plt_ent->plt.offset & ~1;
10679 if (dest >= (bfd_vma) -2)
10682 plt = htab->elf.splt;
10683 if (!htab->elf.dynamic_sections_created
10684 || stub_entry->h == NULL
10685 || stub_entry->h->elf.dynindx == -1)
10686 plt = htab->elf.iplt;
10688 dest += plt->output_offset + plt->output_section->vma;
10690 if (stub_entry->h == NULL
10691 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10693 Elf_Internal_Rela rela;
10696 rela.r_offset = dest;
10698 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10700 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10701 rela.r_addend = (stub_entry->target_value
10702 + stub_entry->target_section->output_offset
10703 + stub_entry->target_section->output_section->vma);
10705 rl = (htab->elf.irelplt->contents
10706 + (htab->elf.irelplt->reloc_count++
10707 * sizeof (Elf64_External_Rela)));
10708 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10709 stub_entry->plt_ent->plt.offset |= 1;
10713 - elf_gp (plt->output_section->owner)
10714 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10716 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10718 info->callbacks->einfo
10719 (_("%P: linkage table error against `%T'\n"),
10720 stub_entry->h != NULL
10721 ? stub_entry->h->elf.root.root.string
10723 bfd_set_error (bfd_error_bad_value);
10724 htab->stub_error = TRUE;
10728 if (htab->plt_stub_align != 0)
10730 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10732 stub_entry->stub_sec->size += pad;
10733 stub_entry->stub_offset = stub_entry->stub_sec->size;
10738 if (info->emitrelocations)
10740 r = get_relocs (stub_entry->stub_sec,
10742 + (PPC_HA (off) != 0)
10743 + (htab->plt_static_chain
10744 && PPC_HA (off + 16) == PPC_HA (off))));
10747 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10748 if (bfd_big_endian (info->output_bfd))
10749 r[0].r_offset += 2;
10750 r[0].r_addend = dest;
10752 if (stub_entry->h != NULL
10753 && (stub_entry->h == htab->tls_get_addr_fd
10754 || stub_entry->h == htab->tls_get_addr)
10755 && !htab->no_tls_get_addr_opt)
10756 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10758 p = build_plt_stub (htab, stub_entry, loc, off, r);
10767 stub_entry->stub_sec->size += size;
10769 if (htab->emit_stub_syms)
10771 struct elf_link_hash_entry *h;
10774 const char *const stub_str[] = { "long_branch",
10775 "long_branch_r2off",
10777 "plt_branch_r2off",
10781 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10782 len2 = strlen (stub_entry->root.string);
10783 name = bfd_malloc (len1 + len2 + 2);
10786 memcpy (name, stub_entry->root.string, 9);
10787 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10788 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10789 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10792 if (h->root.type == bfd_link_hash_new)
10794 h->root.type = bfd_link_hash_defined;
10795 h->root.u.def.section = stub_entry->stub_sec;
10796 h->root.u.def.value = stub_entry->stub_offset;
10797 h->ref_regular = 1;
10798 h->def_regular = 1;
10799 h->ref_regular_nonweak = 1;
10800 h->forced_local = 1;
10808 /* As above, but don't actually build the stub. Just bump offset so
10809 we know stub section sizes, and select plt_branch stubs where
10810 long_branch stubs won't do. */
10813 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10815 struct ppc_stub_hash_entry *stub_entry;
10816 struct bfd_link_info *info;
10817 struct ppc_link_hash_table *htab;
10821 /* Massage our args to the form they really have. */
10822 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10825 htab = ppc_hash_table (info);
10829 if (stub_entry->stub_type == ppc_stub_plt_call
10830 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10833 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10834 if (off >= (bfd_vma) -2)
10836 plt = htab->elf.splt;
10837 if (!htab->elf.dynamic_sections_created
10838 || stub_entry->h == NULL
10839 || stub_entry->h->elf.dynindx == -1)
10840 plt = htab->elf.iplt;
10841 off += (plt->output_offset
10842 + plt->output_section->vma
10843 - elf_gp (plt->output_section->owner)
10844 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10846 size = plt_stub_size (htab, stub_entry, off);
10847 if (htab->plt_stub_align)
10848 size += plt_stub_pad (htab, stub_entry, off);
10849 if (info->emitrelocations)
10851 stub_entry->stub_sec->reloc_count
10852 += ((PPC_HA (off) != 0)
10854 ? 2 + (htab->plt_static_chain
10855 && PPC_HA (off + 16) == PPC_HA (off))
10857 stub_entry->stub_sec->flags |= SEC_RELOC;
10862 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10865 bfd_vma local_off = 0;
10867 off = (stub_entry->target_value
10868 + stub_entry->target_section->output_offset
10869 + stub_entry->target_section->output_section->vma);
10870 off -= (stub_entry->stub_sec->size
10871 + stub_entry->stub_sec->output_offset
10872 + stub_entry->stub_sec->output_section->vma);
10874 /* Reset the stub type from the plt variant in case we now
10875 can reach with a shorter stub. */
10876 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10877 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10880 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10882 r2off = get_r2off (info, stub_entry);
10883 if (r2off == 0 && htab->opd_abi)
10885 htab->stub_error = TRUE;
10889 if (PPC_HA (r2off) != 0)
10894 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10896 /* If the branch offset if too big, use a ppc_stub_plt_branch.
10897 Do the same for -R objects without function descriptors. */
10898 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
10899 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
10902 struct ppc_branch_hash_entry *br_entry;
10904 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10905 stub_entry->root.string + 9,
10907 if (br_entry == NULL)
10909 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10910 stub_entry->root.string);
10911 htab->stub_error = TRUE;
10915 if (br_entry->iter != htab->stub_iteration)
10917 br_entry->iter = htab->stub_iteration;
10918 br_entry->offset = htab->brlt->size;
10919 htab->brlt->size += 8;
10921 if (htab->relbrlt != NULL)
10922 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10923 else if (info->emitrelocations)
10925 htab->brlt->reloc_count += 1;
10926 htab->brlt->flags |= SEC_RELOC;
10930 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10931 off = (br_entry->offset
10932 + htab->brlt->output_offset
10933 + htab->brlt->output_section->vma
10934 - elf_gp (htab->brlt->output_section->owner)
10935 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10937 if (info->emitrelocations)
10939 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10940 stub_entry->stub_sec->flags |= SEC_RELOC;
10943 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off
10947 if (PPC_HA (off) != 0)
10953 if (PPC_HA (off) != 0)
10956 if (PPC_HA (r2off) != 0)
10960 else if (info->emitrelocations)
10962 stub_entry->stub_sec->reloc_count += 1;
10963 stub_entry->stub_sec->flags |= SEC_RELOC;
10967 stub_entry->stub_sec->size += size;
10971 /* Set up various things so that we can make a list of input sections
10972 for each output section included in the link. Returns -1 on error,
10973 0 when no stubs will be needed, and 1 on success. */
10976 ppc64_elf_setup_section_lists
10977 (struct bfd_link_info *info,
10978 asection *(*add_stub_section) (const char *, asection *),
10979 void (*layout_sections_again) (void))
10982 int top_id, top_index, id;
10984 asection **input_list;
10986 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10990 /* Stash our params away. */
10991 htab->add_stub_section = add_stub_section;
10992 htab->layout_sections_again = layout_sections_again;
10994 /* Find the top input section id. */
10995 for (input_bfd = info->input_bfds, top_id = 3;
10997 input_bfd = input_bfd->link_next)
10999 for (section = input_bfd->sections;
11001 section = section->next)
11003 if (top_id < section->id)
11004 top_id = section->id;
11008 htab->top_id = top_id;
11009 amt = sizeof (struct map_stub) * (top_id + 1);
11010 htab->stub_group = bfd_zmalloc (amt);
11011 if (htab->stub_group == NULL)
11014 /* Set toc_off for com, und, abs and ind sections. */
11015 for (id = 0; id < 3; id++)
11016 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11018 /* We can't use output_bfd->section_count here to find the top output
11019 section index as some sections may have been removed, and
11020 strip_excluded_output_sections doesn't renumber the indices. */
11021 for (section = info->output_bfd->sections, top_index = 0;
11023 section = section->next)
11025 if (top_index < section->index)
11026 top_index = section->index;
11029 htab->top_index = top_index;
11030 amt = sizeof (asection *) * (top_index + 1);
11031 input_list = bfd_zmalloc (amt);
11032 htab->input_list = input_list;
11033 if (input_list == NULL)
11039 /* Set up for first pass at multitoc partitioning. */
11042 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11044 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11046 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11047 htab->toc_bfd = NULL;
11048 htab->toc_first_sec = NULL;
11051 /* The linker repeatedly calls this function for each TOC input section
11052 and linker generated GOT section. Group input bfds such that the toc
11053 within a group is less than 64k in size. */
11056 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11058 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11059 bfd_vma addr, off, limit;
11064 if (!htab->second_toc_pass)
11066 /* Keep track of the first .toc or .got section for this input bfd. */
11067 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11071 htab->toc_bfd = isec->owner;
11072 htab->toc_first_sec = isec;
11075 addr = isec->output_offset + isec->output_section->vma;
11076 off = addr - htab->toc_curr;
11077 limit = 0x80008000;
11078 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11080 if (off + isec->size > limit)
11082 addr = (htab->toc_first_sec->output_offset
11083 + htab->toc_first_sec->output_section->vma);
11084 htab->toc_curr = addr;
11087 /* toc_curr is the base address of this toc group. Set elf_gp
11088 for the input section to be the offset relative to the
11089 output toc base plus 0x8000. Making the input elf_gp an
11090 offset allows us to move the toc as a whole without
11091 recalculating input elf_gp. */
11092 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11093 off += TOC_BASE_OFF;
11095 /* Die if someone uses a linker script that doesn't keep input
11096 file .toc and .got together. */
11098 && elf_gp (isec->owner) != 0
11099 && elf_gp (isec->owner) != off)
11102 elf_gp (isec->owner) = off;
11106 /* During the second pass toc_first_sec points to the start of
11107 a toc group, and toc_curr is used to track the old elf_gp.
11108 We use toc_bfd to ensure we only look at each bfd once. */
11109 if (htab->toc_bfd == isec->owner)
11111 htab->toc_bfd = isec->owner;
11113 if (htab->toc_first_sec == NULL
11114 || htab->toc_curr != elf_gp (isec->owner))
11116 htab->toc_curr = elf_gp (isec->owner);
11117 htab->toc_first_sec = isec;
11119 addr = (htab->toc_first_sec->output_offset
11120 + htab->toc_first_sec->output_section->vma);
11121 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11122 elf_gp (isec->owner) = off;
11127 /* Called via elf_link_hash_traverse to merge GOT entries for global
11131 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11133 if (h->root.type == bfd_link_hash_indirect)
11136 merge_got_entries (&h->got.glist);
11141 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11145 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11147 struct got_entry *gent;
11149 if (h->root.type == bfd_link_hash_indirect)
11152 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11153 if (!gent->is_indirect)
11154 allocate_got (h, (struct bfd_link_info *) inf, gent);
11158 /* Called on the first multitoc pass after the last call to
11159 ppc64_elf_next_toc_section. This function removes duplicate GOT
11163 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11165 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11166 struct bfd *ibfd, *ibfd2;
11167 bfd_boolean done_something;
11169 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11171 if (!htab->do_multi_toc)
11174 /* Merge global sym got entries within a toc group. */
11175 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11177 /* And tlsld_got. */
11178 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11180 struct got_entry *ent, *ent2;
11182 if (!is_ppc64_elf (ibfd))
11185 ent = ppc64_tlsld_got (ibfd);
11186 if (!ent->is_indirect
11187 && ent->got.offset != (bfd_vma) -1)
11189 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
11191 if (!is_ppc64_elf (ibfd2))
11194 ent2 = ppc64_tlsld_got (ibfd2);
11195 if (!ent2->is_indirect
11196 && ent2->got.offset != (bfd_vma) -1
11197 && elf_gp (ibfd2) == elf_gp (ibfd))
11199 ent2->is_indirect = TRUE;
11200 ent2->got.ent = ent;
11206 /* Zap sizes of got sections. */
11207 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11208 htab->elf.irelplt->size -= htab->got_reli_size;
11209 htab->got_reli_size = 0;
11211 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11213 asection *got, *relgot;
11215 if (!is_ppc64_elf (ibfd))
11218 got = ppc64_elf_tdata (ibfd)->got;
11221 got->rawsize = got->size;
11223 relgot = ppc64_elf_tdata (ibfd)->relgot;
11224 relgot->rawsize = relgot->size;
11229 /* Now reallocate the got, local syms first. We don't need to
11230 allocate section contents again since we never increase size. */
11231 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11233 struct got_entry **lgot_ents;
11234 struct got_entry **end_lgot_ents;
11235 struct plt_entry **local_plt;
11236 struct plt_entry **end_local_plt;
11237 unsigned char *lgot_masks;
11238 bfd_size_type locsymcount;
11239 Elf_Internal_Shdr *symtab_hdr;
11242 if (!is_ppc64_elf (ibfd))
11245 lgot_ents = elf_local_got_ents (ibfd);
11249 symtab_hdr = &elf_symtab_hdr (ibfd);
11250 locsymcount = symtab_hdr->sh_info;
11251 end_lgot_ents = lgot_ents + locsymcount;
11252 local_plt = (struct plt_entry **) end_lgot_ents;
11253 end_local_plt = local_plt + locsymcount;
11254 lgot_masks = (unsigned char *) end_local_plt;
11255 s = ppc64_elf_tdata (ibfd)->got;
11256 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11258 struct got_entry *ent;
11260 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11262 unsigned int ent_size = 8;
11263 unsigned int rel_size = sizeof (Elf64_External_Rela);
11265 ent->got.offset = s->size;
11266 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11271 s->size += ent_size;
11272 if ((*lgot_masks & PLT_IFUNC) != 0)
11274 htab->elf.irelplt->size += rel_size;
11275 htab->got_reli_size += rel_size;
11277 else if (info->shared)
11279 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11280 srel->size += rel_size;
11286 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11288 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11290 struct got_entry *ent;
11292 if (!is_ppc64_elf (ibfd))
11295 ent = ppc64_tlsld_got (ibfd);
11296 if (!ent->is_indirect
11297 && ent->got.offset != (bfd_vma) -1)
11299 asection *s = ppc64_elf_tdata (ibfd)->got;
11300 ent->got.offset = s->size;
11304 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11305 srel->size += sizeof (Elf64_External_Rela);
11310 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
11311 if (!done_something)
11312 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11316 if (!is_ppc64_elf (ibfd))
11319 got = ppc64_elf_tdata (ibfd)->got;
11322 done_something = got->rawsize != got->size;
11323 if (done_something)
11328 if (done_something)
11329 (*htab->layout_sections_again) ();
11331 /* Set up for second pass over toc sections to recalculate elf_gp
11332 on input sections. */
11333 htab->toc_bfd = NULL;
11334 htab->toc_first_sec = NULL;
11335 htab->second_toc_pass = TRUE;
11336 return done_something;
11339 /* Called after second pass of multitoc partitioning. */
11342 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11344 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11346 /* After the second pass, toc_curr tracks the TOC offset used
11347 for code sections below in ppc64_elf_next_input_section. */
11348 htab->toc_curr = TOC_BASE_OFF;
11351 /* No toc references were found in ISEC. If the code in ISEC makes no
11352 calls, then there's no need to use toc adjusting stubs when branching
11353 into ISEC. Actually, indirect calls from ISEC are OK as they will
11354 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11355 needed, and 2 if a cyclical call-graph was found but no other reason
11356 for a stub was detected. If called from the top level, a return of
11357 2 means the same as a return of 0. */
11360 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11364 /* Mark this section as checked. */
11365 isec->call_check_done = 1;
11367 /* We know none of our code bearing sections will need toc stubs. */
11368 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11371 if (isec->size == 0)
11374 if (isec->output_section == NULL)
11378 if (isec->reloc_count != 0)
11380 Elf_Internal_Rela *relstart, *rel;
11381 Elf_Internal_Sym *local_syms;
11382 struct ppc_link_hash_table *htab;
11384 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11385 info->keep_memory);
11386 if (relstart == NULL)
11389 /* Look for branches to outside of this section. */
11391 htab = ppc_hash_table (info);
11395 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11397 enum elf_ppc64_reloc_type r_type;
11398 unsigned long r_symndx;
11399 struct elf_link_hash_entry *h;
11400 struct ppc_link_hash_entry *eh;
11401 Elf_Internal_Sym *sym;
11403 struct _opd_sec_data *opd;
11407 r_type = ELF64_R_TYPE (rel->r_info);
11408 if (r_type != R_PPC64_REL24
11409 && r_type != R_PPC64_REL14
11410 && r_type != R_PPC64_REL14_BRTAKEN
11411 && r_type != R_PPC64_REL14_BRNTAKEN)
11414 r_symndx = ELF64_R_SYM (rel->r_info);
11415 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11422 /* Calls to dynamic lib functions go through a plt call stub
11424 eh = (struct ppc_link_hash_entry *) h;
11426 && (eh->elf.plt.plist != NULL
11428 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11434 if (sym_sec == NULL)
11435 /* Ignore other undefined symbols. */
11438 /* Assume branches to other sections not included in the
11439 link need stubs too, to cover -R and absolute syms. */
11440 if (sym_sec->output_section == NULL)
11447 sym_value = sym->st_value;
11450 if (h->root.type != bfd_link_hash_defined
11451 && h->root.type != bfd_link_hash_defweak)
11453 sym_value = h->root.u.def.value;
11455 sym_value += rel->r_addend;
11457 /* If this branch reloc uses an opd sym, find the code section. */
11458 opd = get_opd_info (sym_sec);
11461 if (h == NULL && opd->adjust != NULL)
11465 adjust = opd->adjust[sym->st_value / 8];
11467 /* Assume deleted functions won't ever be called. */
11469 sym_value += adjust;
11472 dest = opd_entry_value (sym_sec, sym_value,
11473 &sym_sec, NULL, FALSE);
11474 if (dest == (bfd_vma) -1)
11479 + sym_sec->output_offset
11480 + sym_sec->output_section->vma);
11482 /* Ignore branch to self. */
11483 if (sym_sec == isec)
11486 /* If the called function uses the toc, we need a stub. */
11487 if (sym_sec->has_toc_reloc
11488 || sym_sec->makes_toc_func_call)
11494 /* Assume any branch that needs a long branch stub might in fact
11495 need a plt_branch stub. A plt_branch stub uses r2. */
11496 else if (dest - (isec->output_offset
11497 + isec->output_section->vma
11498 + rel->r_offset) + (1 << 25)
11499 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11507 /* If calling back to a section in the process of being
11508 tested, we can't say for sure that no toc adjusting stubs
11509 are needed, so don't return zero. */
11510 else if (sym_sec->call_check_in_progress)
11513 /* Branches to another section that itself doesn't have any TOC
11514 references are OK. Recursively call ourselves to check. */
11515 else if (!sym_sec->call_check_done)
11519 /* Mark current section as indeterminate, so that other
11520 sections that call back to current won't be marked as
11522 isec->call_check_in_progress = 1;
11523 recur = toc_adjusting_stub_needed (info, sym_sec);
11524 isec->call_check_in_progress = 0;
11535 if (local_syms != NULL
11536 && (elf_symtab_hdr (isec->owner).contents
11537 != (unsigned char *) local_syms))
11539 if (elf_section_data (isec)->relocs != relstart)
11544 && isec->map_head.s != NULL
11545 && (strcmp (isec->output_section->name, ".init") == 0
11546 || strcmp (isec->output_section->name, ".fini") == 0))
11548 if (isec->map_head.s->has_toc_reloc
11549 || isec->map_head.s->makes_toc_func_call)
11551 else if (!isec->map_head.s->call_check_done)
11554 isec->call_check_in_progress = 1;
11555 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11556 isec->call_check_in_progress = 0;
11563 isec->makes_toc_func_call = 1;
11568 /* The linker repeatedly calls this function for each input section,
11569 in the order that input sections are linked into output sections.
11570 Build lists of input sections to determine groupings between which
11571 we may insert linker stubs. */
11574 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11576 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11581 if ((isec->output_section->flags & SEC_CODE) != 0
11582 && isec->output_section->index <= htab->top_index)
11584 asection **list = htab->input_list + isec->output_section->index;
11585 /* Steal the link_sec pointer for our list. */
11586 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11587 /* This happens to make the list in reverse order,
11588 which is what we want. */
11589 PREV_SEC (isec) = *list;
11593 if (htab->multi_toc_needed)
11595 /* Analyse sections that aren't already flagged as needing a
11596 valid toc pointer. Exclude .fixup for the linux kernel.
11597 .fixup contains branches, but only back to the function that
11598 hit an exception. */
11599 if (!(isec->has_toc_reloc
11600 || (isec->flags & SEC_CODE) == 0
11601 || strcmp (isec->name, ".fixup") == 0
11602 || isec->call_check_done))
11604 if (toc_adjusting_stub_needed (info, isec) < 0)
11607 /* Make all sections use the TOC assigned for this object file.
11608 This will be wrong for pasted sections; We fix that in
11609 check_pasted_section(). */
11610 if (elf_gp (isec->owner) != 0)
11611 htab->toc_curr = elf_gp (isec->owner);
11614 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11618 /* Check that all .init and .fini sections use the same toc, if they
11619 have toc relocs. */
11622 check_pasted_section (struct bfd_link_info *info, const char *name)
11624 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11628 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11629 bfd_vma toc_off = 0;
11632 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11633 if (i->has_toc_reloc)
11636 toc_off = htab->stub_group[i->id].toc_off;
11637 else if (toc_off != htab->stub_group[i->id].toc_off)
11642 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11643 if (i->makes_toc_func_call)
11645 toc_off = htab->stub_group[i->id].toc_off;
11649 /* Make sure the whole pasted function uses the same toc offset. */
11651 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11652 htab->stub_group[i->id].toc_off = toc_off;
11658 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11660 return (check_pasted_section (info, ".init")
11661 & check_pasted_section (info, ".fini"));
11664 /* See whether we can group stub sections together. Grouping stub
11665 sections may result in fewer stubs. More importantly, we need to
11666 put all .init* and .fini* stubs at the beginning of the .init or
11667 .fini output sections respectively, because glibc splits the
11668 _init and _fini functions into multiple parts. Putting a stub in
11669 the middle of a function is not a good idea. */
11672 group_sections (struct ppc_link_hash_table *htab,
11673 bfd_size_type stub_group_size,
11674 bfd_boolean stubs_always_before_branch)
11677 bfd_size_type stub14_group_size;
11678 bfd_boolean suppress_size_errors;
11680 suppress_size_errors = FALSE;
11681 stub14_group_size = stub_group_size;
11682 if (stub_group_size == 1)
11684 /* Default values. */
11685 if (stubs_always_before_branch)
11687 stub_group_size = 0x1e00000;
11688 stub14_group_size = 0x7800;
11692 stub_group_size = 0x1c00000;
11693 stub14_group_size = 0x7000;
11695 suppress_size_errors = TRUE;
11698 list = htab->input_list + htab->top_index;
11701 asection *tail = *list;
11702 while (tail != NULL)
11706 bfd_size_type total;
11707 bfd_boolean big_sec;
11711 total = tail->size;
11712 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11713 && ppc64_elf_section_data (tail)->has_14bit_branch
11714 ? stub14_group_size : stub_group_size);
11715 if (big_sec && !suppress_size_errors)
11716 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11717 tail->owner, tail);
11718 curr_toc = htab->stub_group[tail->id].toc_off;
11720 while ((prev = PREV_SEC (curr)) != NULL
11721 && ((total += curr->output_offset - prev->output_offset)
11722 < (ppc64_elf_section_data (prev) != NULL
11723 && ppc64_elf_section_data (prev)->has_14bit_branch
11724 ? stub14_group_size : stub_group_size))
11725 && htab->stub_group[prev->id].toc_off == curr_toc)
11728 /* OK, the size from the start of CURR to the end is less
11729 than stub_group_size and thus can be handled by one stub
11730 section. (or the tail section is itself larger than
11731 stub_group_size, in which case we may be toast.) We
11732 should really be keeping track of the total size of stubs
11733 added here, as stubs contribute to the final output
11734 section size. That's a little tricky, and this way will
11735 only break if stubs added make the total size more than
11736 2^25, ie. for the default stub_group_size, if stubs total
11737 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11740 prev = PREV_SEC (tail);
11741 /* Set up this stub group. */
11742 htab->stub_group[tail->id].link_sec = curr;
11744 while (tail != curr && (tail = prev) != NULL);
11746 /* But wait, there's more! Input sections up to stub_group_size
11747 bytes before the stub section can be handled by it too.
11748 Don't do this if we have a really large section after the
11749 stubs, as adding more stubs increases the chance that
11750 branches may not reach into the stub section. */
11751 if (!stubs_always_before_branch && !big_sec)
11754 while (prev != NULL
11755 && ((total += tail->output_offset - prev->output_offset)
11756 < (ppc64_elf_section_data (prev) != NULL
11757 && ppc64_elf_section_data (prev)->has_14bit_branch
11758 ? stub14_group_size : stub_group_size))
11759 && htab->stub_group[prev->id].toc_off == curr_toc)
11762 prev = PREV_SEC (tail);
11763 htab->stub_group[tail->id].link_sec = curr;
11769 while (list-- != htab->input_list);
11770 free (htab->input_list);
11774 static const unsigned char glink_eh_frame_cie[] =
11776 0, 0, 0, 16, /* length. */
11777 0, 0, 0, 0, /* id. */
11778 1, /* CIE version. */
11779 'z', 'R', 0, /* Augmentation string. */
11780 4, /* Code alignment. */
11781 0x78, /* Data alignment. */
11783 1, /* Augmentation size. */
11784 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11785 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11788 /* Stripping output sections is normally done before dynamic section
11789 symbols have been allocated. This function is called later, and
11790 handles cases like htab->brlt which is mapped to its own output
11794 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11796 if (isec->size == 0
11797 && isec->output_section->size == 0
11798 && !(isec->output_section->flags & SEC_KEEP)
11799 && !bfd_section_removed_from_list (info->output_bfd,
11800 isec->output_section)
11801 && elf_section_data (isec->output_section)->dynindx == 0)
11803 isec->output_section->flags |= SEC_EXCLUDE;
11804 bfd_section_list_remove (info->output_bfd, isec->output_section);
11805 info->output_bfd->section_count--;
11809 /* Determine and set the size of the stub section for a final link.
11811 The basic idea here is to examine all the relocations looking for
11812 PC-relative calls to a target that is unreachable with a "bl"
11816 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11817 bfd_boolean plt_static_chain, int plt_thread_safe,
11818 int plt_stub_align)
11820 bfd_size_type stub_group_size;
11821 bfd_boolean stubs_always_before_branch;
11822 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11827 htab->plt_static_chain = plt_static_chain;
11828 htab->plt_stub_align = plt_stub_align;
11829 if (plt_thread_safe == -1 && !info->executable)
11830 plt_thread_safe = 1;
11831 if (!htab->opd_abi)
11832 plt_thread_safe = 0;
11833 else if (plt_thread_safe == -1)
11835 static const char *const thread_starter[] =
11839 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11841 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11842 "mq_notify", "create_timer",
11846 "GOMP_parallel_start",
11847 "GOMP_parallel_loop_static_start",
11848 "GOMP_parallel_loop_dynamic_start",
11849 "GOMP_parallel_loop_guided_start",
11850 "GOMP_parallel_loop_runtime_start",
11851 "GOMP_parallel_sections_start",
11855 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11857 struct elf_link_hash_entry *h;
11858 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11859 FALSE, FALSE, TRUE);
11860 plt_thread_safe = h != NULL && h->ref_regular;
11861 if (plt_thread_safe)
11865 htab->plt_thread_safe = plt_thread_safe;
11866 stubs_always_before_branch = group_size < 0;
11867 if (group_size < 0)
11868 stub_group_size = -group_size;
11870 stub_group_size = group_size;
11872 group_sections (htab, stub_group_size, stubs_always_before_branch);
11877 unsigned int bfd_indx;
11878 asection *stub_sec;
11880 htab->stub_iteration += 1;
11882 for (input_bfd = info->input_bfds, bfd_indx = 0;
11884 input_bfd = input_bfd->link_next, bfd_indx++)
11886 Elf_Internal_Shdr *symtab_hdr;
11888 Elf_Internal_Sym *local_syms = NULL;
11890 if (!is_ppc64_elf (input_bfd))
11893 /* We'll need the symbol table in a second. */
11894 symtab_hdr = &elf_symtab_hdr (input_bfd);
11895 if (symtab_hdr->sh_info == 0)
11898 /* Walk over each section attached to the input bfd. */
11899 for (section = input_bfd->sections;
11901 section = section->next)
11903 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11905 /* If there aren't any relocs, then there's nothing more
11907 if ((section->flags & SEC_RELOC) == 0
11908 || (section->flags & SEC_ALLOC) == 0
11909 || (section->flags & SEC_LOAD) == 0
11910 || (section->flags & SEC_CODE) == 0
11911 || section->reloc_count == 0)
11914 /* If this section is a link-once section that will be
11915 discarded, then don't create any stubs. */
11916 if (section->output_section == NULL
11917 || section->output_section->owner != info->output_bfd)
11920 /* Get the relocs. */
11922 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11923 info->keep_memory);
11924 if (internal_relocs == NULL)
11925 goto error_ret_free_local;
11927 /* Now examine each relocation. */
11928 irela = internal_relocs;
11929 irelaend = irela + section->reloc_count;
11930 for (; irela < irelaend; irela++)
11932 enum elf_ppc64_reloc_type r_type;
11933 unsigned int r_indx;
11934 enum ppc_stub_type stub_type;
11935 struct ppc_stub_hash_entry *stub_entry;
11936 asection *sym_sec, *code_sec;
11937 bfd_vma sym_value, code_value;
11938 bfd_vma destination;
11939 unsigned long local_off;
11940 bfd_boolean ok_dest;
11941 struct ppc_link_hash_entry *hash;
11942 struct ppc_link_hash_entry *fdh;
11943 struct elf_link_hash_entry *h;
11944 Elf_Internal_Sym *sym;
11946 const asection *id_sec;
11947 struct _opd_sec_data *opd;
11948 struct plt_entry *plt_ent;
11950 r_type = ELF64_R_TYPE (irela->r_info);
11951 r_indx = ELF64_R_SYM (irela->r_info);
11953 if (r_type >= R_PPC64_max)
11955 bfd_set_error (bfd_error_bad_value);
11956 goto error_ret_free_internal;
11959 /* Only look for stubs on branch instructions. */
11960 if (r_type != R_PPC64_REL24
11961 && r_type != R_PPC64_REL14
11962 && r_type != R_PPC64_REL14_BRTAKEN
11963 && r_type != R_PPC64_REL14_BRNTAKEN)
11966 /* Now determine the call target, its name, value,
11968 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11969 r_indx, input_bfd))
11970 goto error_ret_free_internal;
11971 hash = (struct ppc_link_hash_entry *) h;
11978 sym_value = sym->st_value;
11981 else if (hash->elf.root.type == bfd_link_hash_defined
11982 || hash->elf.root.type == bfd_link_hash_defweak)
11984 sym_value = hash->elf.root.u.def.value;
11985 if (sym_sec->output_section != NULL)
11988 else if (hash->elf.root.type == bfd_link_hash_undefweak
11989 || hash->elf.root.type == bfd_link_hash_undefined)
11991 /* Recognise an old ABI func code entry sym, and
11992 use the func descriptor sym instead if it is
11994 if (hash->elf.root.root.string[0] == '.'
11995 && (fdh = lookup_fdh (hash, htab)) != NULL)
11997 if (fdh->elf.root.type == bfd_link_hash_defined
11998 || fdh->elf.root.type == bfd_link_hash_defweak)
12000 sym_sec = fdh->elf.root.u.def.section;
12001 sym_value = fdh->elf.root.u.def.value;
12002 if (sym_sec->output_section != NULL)
12011 bfd_set_error (bfd_error_bad_value);
12012 goto error_ret_free_internal;
12019 sym_value += irela->r_addend;
12020 destination = (sym_value
12021 + sym_sec->output_offset
12022 + sym_sec->output_section->vma);
12023 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12028 code_sec = sym_sec;
12029 code_value = sym_value;
12030 opd = get_opd_info (sym_sec);
12035 if (hash == NULL && opd->adjust != NULL)
12037 long adjust = opd->adjust[sym_value / 8];
12040 code_value += adjust;
12041 sym_value += adjust;
12043 dest = opd_entry_value (sym_sec, sym_value,
12044 &code_sec, &code_value, FALSE);
12045 if (dest != (bfd_vma) -1)
12047 destination = dest;
12050 /* Fixup old ABI sym to point at code
12052 hash->elf.root.type = bfd_link_hash_defweak;
12053 hash->elf.root.u.def.section = code_sec;
12054 hash->elf.root.u.def.value = code_value;
12059 /* Determine what (if any) linker stub is needed. */
12061 stub_type = ppc_type_of_stub (section, irela, &hash,
12062 &plt_ent, destination,
12065 if (stub_type != ppc_stub_plt_call)
12067 /* Check whether we need a TOC adjusting stub.
12068 Since the linker pastes together pieces from
12069 different object files when creating the
12070 _init and _fini functions, it may be that a
12071 call to what looks like a local sym is in
12072 fact a call needing a TOC adjustment. */
12073 if (code_sec != NULL
12074 && code_sec->output_section != NULL
12075 && (htab->stub_group[code_sec->id].toc_off
12076 != htab->stub_group[section->id].toc_off)
12077 && (code_sec->has_toc_reloc
12078 || code_sec->makes_toc_func_call))
12079 stub_type = ppc_stub_long_branch_r2off;
12082 if (stub_type == ppc_stub_none)
12085 /* __tls_get_addr calls might be eliminated. */
12086 if (stub_type != ppc_stub_plt_call
12088 && (hash == htab->tls_get_addr
12089 || hash == htab->tls_get_addr_fd)
12090 && section->has_tls_reloc
12091 && irela != internal_relocs)
12093 /* Get tls info. */
12094 unsigned char *tls_mask;
12096 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12097 irela - 1, input_bfd))
12098 goto error_ret_free_internal;
12099 if (*tls_mask != 0)
12103 if (stub_type == ppc_stub_plt_call
12104 && irela + 1 < irelaend
12105 && irela[1].r_offset == irela->r_offset + 4
12106 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12108 if (!tocsave_find (htab, INSERT,
12109 &local_syms, irela + 1, input_bfd))
12110 goto error_ret_free_internal;
12112 else if (stub_type == ppc_stub_plt_call)
12113 stub_type = ppc_stub_plt_call_r2save;
12115 /* Support for grouping stub sections. */
12116 id_sec = htab->stub_group[section->id].link_sec;
12118 /* Get the name of this stub. */
12119 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12121 goto error_ret_free_internal;
12123 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12124 stub_name, FALSE, FALSE);
12125 if (stub_entry != NULL)
12127 /* The proper stub has already been created. */
12129 if (stub_type == ppc_stub_plt_call_r2save)
12130 stub_entry->stub_type = stub_type;
12134 stub_entry = ppc_add_stub (stub_name, section, info);
12135 if (stub_entry == NULL)
12138 error_ret_free_internal:
12139 if (elf_section_data (section)->relocs == NULL)
12140 free (internal_relocs);
12141 error_ret_free_local:
12142 if (local_syms != NULL
12143 && (symtab_hdr->contents
12144 != (unsigned char *) local_syms))
12149 stub_entry->stub_type = stub_type;
12150 if (stub_type != ppc_stub_plt_call
12151 && stub_type != ppc_stub_plt_call_r2save)
12153 stub_entry->target_value = code_value;
12154 stub_entry->target_section = code_sec;
12158 stub_entry->target_value = sym_value;
12159 stub_entry->target_section = sym_sec;
12161 stub_entry->h = hash;
12162 stub_entry->plt_ent = plt_ent;
12163 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12165 if (stub_entry->h != NULL)
12166 htab->stub_globals += 1;
12169 /* We're done with the internal relocs, free them. */
12170 if (elf_section_data (section)->relocs != internal_relocs)
12171 free (internal_relocs);
12174 if (local_syms != NULL
12175 && symtab_hdr->contents != (unsigned char *) local_syms)
12177 if (!info->keep_memory)
12180 symtab_hdr->contents = (unsigned char *) local_syms;
12184 /* We may have added some stubs. Find out the new size of the
12186 for (stub_sec = htab->stub_bfd->sections;
12188 stub_sec = stub_sec->next)
12189 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12191 stub_sec->rawsize = stub_sec->size;
12192 stub_sec->size = 0;
12193 stub_sec->reloc_count = 0;
12194 stub_sec->flags &= ~SEC_RELOC;
12197 htab->brlt->size = 0;
12198 htab->brlt->reloc_count = 0;
12199 htab->brlt->flags &= ~SEC_RELOC;
12200 if (htab->relbrlt != NULL)
12201 htab->relbrlt->size = 0;
12203 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12205 if (info->emitrelocations
12206 && htab->glink != NULL && htab->glink->size != 0)
12208 htab->glink->reloc_count = 1;
12209 htab->glink->flags |= SEC_RELOC;
12212 if (htab->glink_eh_frame != NULL
12213 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12214 && htab->glink_eh_frame->output_section->size != 0)
12216 size_t size = 0, align;
12218 for (stub_sec = htab->stub_bfd->sections;
12220 stub_sec = stub_sec->next)
12221 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12223 if (htab->glink != NULL && htab->glink->size != 0)
12226 size += sizeof (glink_eh_frame_cie);
12228 align <<= htab->glink_eh_frame->output_section->alignment_power;
12230 size = (size + align) & ~align;
12231 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12232 htab->glink_eh_frame->size = size;
12235 if (htab->plt_stub_align != 0)
12236 for (stub_sec = htab->stub_bfd->sections;
12238 stub_sec = stub_sec->next)
12239 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12240 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12241 & (-1 << htab->plt_stub_align));
12243 for (stub_sec = htab->stub_bfd->sections;
12245 stub_sec = stub_sec->next)
12246 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12247 && stub_sec->rawsize != stub_sec->size)
12250 /* Exit from this loop when no stubs have been added, and no stubs
12251 have changed size. */
12252 if (stub_sec == NULL
12253 && (htab->glink_eh_frame == NULL
12254 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12257 /* Ask the linker to do its stuff. */
12258 (*htab->layout_sections_again) ();
12261 maybe_strip_output (info, htab->brlt);
12262 if (htab->glink_eh_frame != NULL)
12263 maybe_strip_output (info, htab->glink_eh_frame);
12268 /* Called after we have determined section placement. If sections
12269 move, we'll be called again. Provide a value for TOCstart. */
12272 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12277 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12278 order. The TOC starts where the first of these sections starts. */
12279 s = bfd_get_section_by_name (obfd, ".got");
12280 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12281 s = bfd_get_section_by_name (obfd, ".toc");
12282 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12283 s = bfd_get_section_by_name (obfd, ".tocbss");
12284 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12285 s = bfd_get_section_by_name (obfd, ".plt");
12286 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12288 /* This may happen for
12289 o references to TOC base (SYM@toc / TOC[tc0]) without a
12291 o bad linker script
12292 o --gc-sections and empty TOC sections
12294 FIXME: Warn user? */
12296 /* Look for a likely section. We probably won't even be
12298 for (s = obfd->sections; s != NULL; s = s->next)
12299 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12301 == (SEC_ALLOC | SEC_SMALL_DATA))
12304 for (s = obfd->sections; s != NULL; s = s->next)
12305 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12306 == (SEC_ALLOC | SEC_SMALL_DATA))
12309 for (s = obfd->sections; s != NULL; s = s->next)
12310 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12314 for (s = obfd->sections; s != NULL; s = s->next)
12315 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12321 TOCstart = s->output_section->vma + s->output_offset;
12323 _bfd_set_gp_value (obfd, TOCstart);
12325 if (info != NULL && s != NULL && is_ppc64_elf (obfd))
12327 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12330 && htab->elf.hgot != NULL)
12332 htab->elf.hgot->type = STT_OBJECT;
12333 htab->elf.hgot->root.type = bfd_link_hash_defined;
12334 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12335 htab->elf.hgot->root.u.def.section = s;
12341 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12342 write out any global entry stubs. */
12345 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12347 struct bfd_link_info *info;
12348 struct ppc_link_hash_table *htab;
12349 struct plt_entry *pent;
12352 if (h->root.type == bfd_link_hash_indirect)
12355 if (!h->pointer_equality_needed)
12358 if (h->def_regular)
12362 htab = ppc_hash_table (info);
12367 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12368 if (pent->plt.offset != (bfd_vma) -1
12369 && pent->addend == 0)
12375 /* For ELFv2, if this symbol is not defined in a regular file
12376 and we are not generating a shared library or pie, then we
12377 need to define the symbol in the executable on a call stub.
12378 This is to avoid text relocations. */
12379 h->root.u.def.section = s;
12380 h->root.u.def.value = s->size;
12382 p = s->contents + h->root.u.def.value;
12383 plt = htab->elf.splt;
12384 if (!htab->elf.dynamic_sections_created
12385 || h->dynindx == -1)
12386 plt = htab->elf.iplt;
12387 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12388 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12390 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12392 info->callbacks->einfo
12393 (_("%P: linkage table error against `%T'\n"),
12394 h->root.root.string);
12395 bfd_set_error (bfd_error_bad_value);
12396 htab->stub_error = TRUE;
12399 if (PPC_HA (off) != 0)
12401 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12404 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12406 bfd_put_32 (s->owner, MTCTR_R12, p);
12408 bfd_put_32 (s->owner, BCTR, p);
12414 /* Build all the stubs associated with the current output file.
12415 The stubs are kept in a hash table attached to the main linker
12416 hash table. This function is called via gldelf64ppc_finish. */
12419 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
12420 struct bfd_link_info *info,
12423 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12424 asection *stub_sec;
12426 int stub_sec_count = 0;
12431 htab->emit_stub_syms = emit_stub_syms;
12433 /* Allocate memory to hold the linker stubs. */
12434 for (stub_sec = htab->stub_bfd->sections;
12436 stub_sec = stub_sec->next)
12437 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12438 && stub_sec->size != 0)
12440 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
12441 if (stub_sec->contents == NULL)
12443 /* We want to check that built size is the same as calculated
12444 size. rawsize is a convenient location to use. */
12445 stub_sec->rawsize = stub_sec->size;
12446 stub_sec->size = 0;
12449 if (htab->glink != NULL && htab->glink->size != 0)
12454 /* Build the .glink plt call stub. */
12455 if (htab->emit_stub_syms)
12457 struct elf_link_hash_entry *h;
12458 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12459 TRUE, FALSE, FALSE);
12462 if (h->root.type == bfd_link_hash_new)
12464 h->root.type = bfd_link_hash_defined;
12465 h->root.u.def.section = htab->glink;
12466 h->root.u.def.value = 8;
12467 h->ref_regular = 1;
12468 h->def_regular = 1;
12469 h->ref_regular_nonweak = 1;
12470 h->forced_local = 1;
12474 plt0 = (htab->elf.splt->output_section->vma
12475 + htab->elf.splt->output_offset
12477 if (info->emitrelocations)
12479 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12482 r->r_offset = (htab->glink->output_offset
12483 + htab->glink->output_section->vma);
12484 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12485 r->r_addend = plt0;
12487 p = htab->glink->contents;
12488 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12489 bfd_put_64 (htab->glink->owner, plt0, p);
12493 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12495 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12497 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12499 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12501 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12503 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12505 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12507 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12509 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12511 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12516 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12518 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12520 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12522 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12524 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12526 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12528 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12530 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12532 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12534 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12536 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12538 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12541 bfd_put_32 (htab->glink->owner, BCTR, p);
12543 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12545 bfd_put_32 (htab->glink->owner, NOP, p);
12549 /* Build the .glink lazy link call stubs. */
12551 while (p < htab->glink->contents + htab->glink->rawsize)
12557 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12562 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12564 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12569 bfd_put_32 (htab->glink->owner,
12570 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12575 /* Build .glink global entry stubs. */
12576 if (htab->glink->size > htab->glink->rawsize)
12578 htab->glink->size = (htab->glink->rawsize + 15) & -16;
12579 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12583 if (htab->brlt->size != 0)
12585 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12587 if (htab->brlt->contents == NULL)
12590 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12592 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12593 htab->relbrlt->size);
12594 if (htab->relbrlt->contents == NULL)
12598 if (htab->glink_eh_frame != NULL
12599 && htab->glink_eh_frame->size != 0)
12602 bfd_byte *last_fde;
12603 size_t last_fde_len, size, align, pad;
12605 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12608 htab->glink_eh_frame->contents = p;
12611 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12613 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12614 /* CIE length (rewrite in case little-endian). */
12615 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12616 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12617 p += sizeof (glink_eh_frame_cie);
12619 for (stub_sec = htab->stub_bfd->sections;
12621 stub_sec = stub_sec->next)
12622 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12627 bfd_put_32 (htab->elf.dynobj, 16, p);
12630 val = p - htab->glink_eh_frame->contents;
12631 bfd_put_32 (htab->elf.dynobj, val, p);
12633 /* Offset to stub section. */
12634 val = (stub_sec->output_section->vma
12635 + stub_sec->output_offset);
12636 val -= (htab->glink_eh_frame->output_section->vma
12637 + htab->glink_eh_frame->output_offset);
12638 val -= p - htab->glink_eh_frame->contents;
12639 if (val + 0x80000000 > 0xffffffff)
12641 info->callbacks->einfo
12642 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12646 bfd_put_32 (htab->elf.dynobj, val, p);
12648 /* stub section size. */
12649 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12651 /* Augmentation. */
12656 if (htab->glink != NULL && htab->glink->size != 0)
12661 bfd_put_32 (htab->elf.dynobj, 20, p);
12664 val = p - htab->glink_eh_frame->contents;
12665 bfd_put_32 (htab->elf.dynobj, val, p);
12667 /* Offset to .glink. */
12668 val = (htab->glink->output_section->vma
12669 + htab->glink->output_offset
12671 val -= (htab->glink_eh_frame->output_section->vma
12672 + htab->glink_eh_frame->output_offset);
12673 val -= p - htab->glink_eh_frame->contents;
12674 if (val + 0x80000000 > 0xffffffff)
12676 info->callbacks->einfo
12677 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12678 htab->glink->name);
12681 bfd_put_32 (htab->elf.dynobj, val, p);
12684 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12686 /* Augmentation. */
12689 *p++ = DW_CFA_advance_loc + 1;
12690 *p++ = DW_CFA_register;
12693 *p++ = DW_CFA_advance_loc + 4;
12694 *p++ = DW_CFA_restore_extended;
12697 /* Subsume any padding into the last FDE if user .eh_frame
12698 sections are aligned more than glink_eh_frame. Otherwise any
12699 zero padding will be seen as a terminator. */
12700 size = p - htab->glink_eh_frame->contents;
12702 align <<= htab->glink_eh_frame->output_section->alignment_power;
12704 pad = ((size + align) & ~align) - size;
12705 htab->glink_eh_frame->size = size + pad;
12706 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12709 /* Build the stubs as directed by the stub hash table. */
12710 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12712 if (htab->relbrlt != NULL)
12713 htab->relbrlt->reloc_count = 0;
12715 if (htab->plt_stub_align != 0)
12716 for (stub_sec = htab->stub_bfd->sections;
12718 stub_sec = stub_sec->next)
12719 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12720 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12721 & (-1 << htab->plt_stub_align));
12723 for (stub_sec = htab->stub_bfd->sections;
12725 stub_sec = stub_sec->next)
12726 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12728 stub_sec_count += 1;
12729 if (stub_sec->rawsize != stub_sec->size)
12733 if (stub_sec != NULL
12734 || (htab->glink_eh_frame != NULL
12735 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12737 htab->stub_error = TRUE;
12738 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12741 if (htab->stub_error)
12746 *stats = bfd_malloc (500);
12747 if (*stats == NULL)
12750 sprintf (*stats, _("linker stubs in %u group%s\n"
12752 " toc adjust %lu\n"
12753 " long branch %lu\n"
12754 " long toc adj %lu\n"
12756 " plt call toc %lu"),
12758 stub_sec_count == 1 ? "" : "s",
12759 htab->stub_count[ppc_stub_long_branch - 1],
12760 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12761 htab->stub_count[ppc_stub_plt_branch - 1],
12762 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12763 htab->stub_count[ppc_stub_plt_call - 1],
12764 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12769 /* This function undoes the changes made by add_symbol_adjust. */
12772 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12774 struct ppc_link_hash_entry *eh;
12776 if (h->root.type == bfd_link_hash_indirect)
12779 eh = (struct ppc_link_hash_entry *) h;
12780 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12783 eh->elf.root.type = bfd_link_hash_undefined;
12788 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12790 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12793 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12796 /* What to do when ld finds relocations against symbols defined in
12797 discarded sections. */
12799 static unsigned int
12800 ppc64_elf_action_discarded (asection *sec)
12802 if (strcmp (".opd", sec->name) == 0)
12805 if (strcmp (".toc", sec->name) == 0)
12808 if (strcmp (".toc1", sec->name) == 0)
12811 return _bfd_elf_default_action_discarded (sec);
12814 /* The RELOCATE_SECTION function is called by the ELF backend linker
12815 to handle the relocations for a section.
12817 The relocs are always passed as Rela structures; if the section
12818 actually uses Rel structures, the r_addend field will always be
12821 This function is responsible for adjust the section contents as
12822 necessary, and (if using Rela relocs and generating a
12823 relocatable output file) adjusting the reloc addend as
12826 This function does not have to worry about setting the reloc
12827 address or the reloc symbol index.
12829 LOCAL_SYMS is a pointer to the swapped in local symbols.
12831 LOCAL_SECTIONS is an array giving the section in the input file
12832 corresponding to the st_shndx field of each local symbol.
12834 The global hash table entry for the global symbols can be found
12835 via elf_sym_hashes (input_bfd).
12837 When generating relocatable output, this function must handle
12838 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12839 going to be the section symbol corresponding to the output
12840 section, which means that the addend must be adjusted
12844 ppc64_elf_relocate_section (bfd *output_bfd,
12845 struct bfd_link_info *info,
12847 asection *input_section,
12848 bfd_byte *contents,
12849 Elf_Internal_Rela *relocs,
12850 Elf_Internal_Sym *local_syms,
12851 asection **local_sections)
12853 struct ppc_link_hash_table *htab;
12854 Elf_Internal_Shdr *symtab_hdr;
12855 struct elf_link_hash_entry **sym_hashes;
12856 Elf_Internal_Rela *rel;
12857 Elf_Internal_Rela *relend;
12858 Elf_Internal_Rela outrel;
12860 struct got_entry **local_got_ents;
12862 bfd_boolean ret = TRUE;
12863 bfd_boolean is_opd;
12864 /* Assume 'at' branch hints. */
12865 bfd_boolean is_isa_v2 = TRUE;
12866 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12868 /* Initialize howto table if needed. */
12869 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12872 htab = ppc_hash_table (info);
12876 /* Don't relocate stub sections. */
12877 if (input_section->owner == htab->stub_bfd)
12880 BFD_ASSERT (is_ppc64_elf (input_bfd));
12882 local_got_ents = elf_local_got_ents (input_bfd);
12883 TOCstart = elf_gp (output_bfd);
12884 symtab_hdr = &elf_symtab_hdr (input_bfd);
12885 sym_hashes = elf_sym_hashes (input_bfd);
12886 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12889 relend = relocs + input_section->reloc_count;
12890 for (; rel < relend; rel++)
12892 enum elf_ppc64_reloc_type r_type;
12894 bfd_reloc_status_type r;
12895 Elf_Internal_Sym *sym;
12897 struct elf_link_hash_entry *h_elf;
12898 struct ppc_link_hash_entry *h;
12899 struct ppc_link_hash_entry *fdh;
12900 const char *sym_name;
12901 unsigned long r_symndx, toc_symndx;
12902 bfd_vma toc_addend;
12903 unsigned char tls_mask, tls_gd, tls_type;
12904 unsigned char sym_type;
12905 bfd_vma relocation;
12906 bfd_boolean unresolved_reloc;
12907 bfd_boolean warned;
12908 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
12911 struct ppc_stub_hash_entry *stub_entry;
12912 bfd_vma max_br_offset;
12914 const Elf_Internal_Rela orig_rel = *rel;
12916 r_type = ELF64_R_TYPE (rel->r_info);
12917 r_symndx = ELF64_R_SYM (rel->r_info);
12919 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12920 symbol of the previous ADDR64 reloc. The symbol gives us the
12921 proper TOC base to use. */
12922 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12924 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12926 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12932 unresolved_reloc = FALSE;
12935 if (r_symndx < symtab_hdr->sh_info)
12937 /* It's a local symbol. */
12938 struct _opd_sec_data *opd;
12940 sym = local_syms + r_symndx;
12941 sec = local_sections[r_symndx];
12942 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12943 sym_type = ELF64_ST_TYPE (sym->st_info);
12944 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12945 opd = get_opd_info (sec);
12946 if (opd != NULL && opd->adjust != NULL)
12948 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12953 /* If this is a relocation against the opd section sym
12954 and we have edited .opd, adjust the reloc addend so
12955 that ld -r and ld --emit-relocs output is correct.
12956 If it is a reloc against some other .opd symbol,
12957 then the symbol value will be adjusted later. */
12958 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12959 rel->r_addend += adjust;
12961 relocation += adjust;
12967 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12968 r_symndx, symtab_hdr, sym_hashes,
12969 h_elf, sec, relocation,
12970 unresolved_reloc, warned);
12971 sym_name = h_elf->root.root.string;
12972 sym_type = h_elf->type;
12974 && sec->owner == output_bfd
12975 && strcmp (sec->name, ".opd") == 0)
12977 /* This is a symbol defined in a linker script. All
12978 such are defined in output sections, even those
12979 defined by simple assignment from a symbol defined in
12980 an input section. Transfer the symbol to an
12981 appropriate input .opd section, so that a branch to
12982 this symbol will be mapped to the location specified
12983 by the opd entry. */
12984 struct bfd_link_order *lo;
12985 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
12986 if (lo->type == bfd_indirect_link_order)
12988 asection *isec = lo->u.indirect.section;
12989 if (h_elf->root.u.def.value >= isec->output_offset
12990 && h_elf->root.u.def.value < (isec->output_offset
12993 h_elf->root.u.def.value -= isec->output_offset;
12994 h_elf->root.u.def.section = isec;
13001 h = (struct ppc_link_hash_entry *) h_elf;
13003 if (sec != NULL && discarded_section (sec))
13004 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13006 ppc64_elf_howto_table[r_type], 0,
13009 if (info->relocatable)
13012 if (h != NULL && &h->elf == htab->elf.hgot)
13014 relocation = (TOCstart
13015 + htab->stub_group[input_section->id].toc_off);
13016 sec = bfd_abs_section_ptr;
13017 unresolved_reloc = FALSE;
13020 /* TLS optimizations. Replace instruction sequences and relocs
13021 based on information we collected in tls_optimize. We edit
13022 RELOCS so that --emit-relocs will output something sensible
13023 for the final instruction stream. */
13028 tls_mask = h->tls_mask;
13029 else if (local_got_ents != NULL)
13031 struct plt_entry **local_plt = (struct plt_entry **)
13032 (local_got_ents + symtab_hdr->sh_info);
13033 unsigned char *lgot_masks = (unsigned char *)
13034 (local_plt + symtab_hdr->sh_info);
13035 tls_mask = lgot_masks[r_symndx];
13038 && (r_type == R_PPC64_TLS
13039 || r_type == R_PPC64_TLSGD
13040 || r_type == R_PPC64_TLSLD))
13042 /* Check for toc tls entries. */
13043 unsigned char *toc_tls;
13045 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13046 &local_syms, rel, input_bfd))
13050 tls_mask = *toc_tls;
13053 /* Check that tls relocs are used with tls syms, and non-tls
13054 relocs are used with non-tls syms. */
13055 if (r_symndx != STN_UNDEF
13056 && r_type != R_PPC64_NONE
13058 || h->elf.root.type == bfd_link_hash_defined
13059 || h->elf.root.type == bfd_link_hash_defweak)
13060 && (IS_PPC64_TLS_RELOC (r_type)
13061 != (sym_type == STT_TLS
13062 || (sym_type == STT_SECTION
13063 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13066 && (r_type == R_PPC64_TLS
13067 || r_type == R_PPC64_TLSGD
13068 || r_type == R_PPC64_TLSLD))
13069 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13072 info->callbacks->einfo
13073 (!IS_PPC64_TLS_RELOC (r_type)
13074 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13075 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13076 input_bfd, input_section, rel->r_offset,
13077 ppc64_elf_howto_table[r_type]->name,
13081 /* Ensure reloc mapping code below stays sane. */
13082 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13083 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13084 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13085 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13086 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13087 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13088 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13089 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13090 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13091 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13099 case R_PPC64_LO_DS_OPT:
13100 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13101 if ((insn & (0x3f << 26)) != 58u << 26)
13103 insn += (14u << 26) - (58u << 26);
13104 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13105 r_type = R_PPC64_TOC16_LO;
13106 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13109 case R_PPC64_TOC16:
13110 case R_PPC64_TOC16_LO:
13111 case R_PPC64_TOC16_DS:
13112 case R_PPC64_TOC16_LO_DS:
13114 /* Check for toc tls entries. */
13115 unsigned char *toc_tls;
13118 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13119 &local_syms, rel, input_bfd);
13125 tls_mask = *toc_tls;
13126 if (r_type == R_PPC64_TOC16_DS
13127 || r_type == R_PPC64_TOC16_LO_DS)
13130 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13135 /* If we found a GD reloc pair, then we might be
13136 doing a GD->IE transition. */
13139 tls_gd = TLS_TPRELGD;
13140 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13143 else if (retval == 3)
13145 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13153 case R_PPC64_GOT_TPREL16_HI:
13154 case R_PPC64_GOT_TPREL16_HA:
13156 && (tls_mask & TLS_TPREL) == 0)
13158 rel->r_offset -= d_offset;
13159 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13160 r_type = R_PPC64_NONE;
13161 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13165 case R_PPC64_GOT_TPREL16_DS:
13166 case R_PPC64_GOT_TPREL16_LO_DS:
13168 && (tls_mask & TLS_TPREL) == 0)
13171 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13173 insn |= 0x3c0d0000; /* addis 0,13,0 */
13174 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13175 r_type = R_PPC64_TPREL16_HA;
13176 if (toc_symndx != 0)
13178 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13179 rel->r_addend = toc_addend;
13180 /* We changed the symbol. Start over in order to
13181 get h, sym, sec etc. right. */
13186 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13192 && (tls_mask & TLS_TPREL) == 0)
13194 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13195 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13198 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13199 /* Was PPC64_TLS which sits on insn boundary, now
13200 PPC64_TPREL16_LO which is at low-order half-word. */
13201 rel->r_offset += d_offset;
13202 r_type = R_PPC64_TPREL16_LO;
13203 if (toc_symndx != 0)
13205 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13206 rel->r_addend = toc_addend;
13207 /* We changed the symbol. Start over in order to
13208 get h, sym, sec etc. right. */
13213 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13217 case R_PPC64_GOT_TLSGD16_HI:
13218 case R_PPC64_GOT_TLSGD16_HA:
13219 tls_gd = TLS_TPRELGD;
13220 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13224 case R_PPC64_GOT_TLSLD16_HI:
13225 case R_PPC64_GOT_TLSLD16_HA:
13226 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13229 if ((tls_mask & tls_gd) != 0)
13230 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13231 + R_PPC64_GOT_TPREL16_DS);
13234 rel->r_offset -= d_offset;
13235 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13236 r_type = R_PPC64_NONE;
13238 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13242 case R_PPC64_GOT_TLSGD16:
13243 case R_PPC64_GOT_TLSGD16_LO:
13244 tls_gd = TLS_TPRELGD;
13245 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13249 case R_PPC64_GOT_TLSLD16:
13250 case R_PPC64_GOT_TLSLD16_LO:
13251 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13253 unsigned int insn1, insn2, insn3;
13257 offset = (bfd_vma) -1;
13258 /* If not using the newer R_PPC64_TLSGD/LD to mark
13259 __tls_get_addr calls, we must trust that the call
13260 stays with its arg setup insns, ie. that the next
13261 reloc is the __tls_get_addr call associated with
13262 the current reloc. Edit both insns. */
13263 if (input_section->has_tls_get_addr_call
13264 && rel + 1 < relend
13265 && branch_reloc_hash_match (input_bfd, rel + 1,
13266 htab->tls_get_addr,
13267 htab->tls_get_addr_fd))
13268 offset = rel[1].r_offset;
13269 if ((tls_mask & tls_gd) != 0)
13272 insn1 = bfd_get_32 (output_bfd,
13273 contents + rel->r_offset - d_offset);
13274 insn1 &= (1 << 26) - (1 << 2);
13275 insn1 |= 58 << 26; /* ld */
13276 insn2 = 0x7c636a14; /* add 3,3,13 */
13277 if (offset != (bfd_vma) -1)
13278 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13279 if ((tls_mask & TLS_EXPLICIT) == 0)
13280 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13281 + R_PPC64_GOT_TPREL16_DS);
13283 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13284 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13289 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13290 insn2 = 0x38630000; /* addi 3,3,0 */
13293 /* Was an LD reloc. */
13295 sec = local_sections[toc_symndx];
13297 r_symndx < symtab_hdr->sh_info;
13299 if (local_sections[r_symndx] == sec)
13301 if (r_symndx >= symtab_hdr->sh_info)
13302 r_symndx = STN_UNDEF;
13303 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13304 if (r_symndx != STN_UNDEF)
13305 rel->r_addend -= (local_syms[r_symndx].st_value
13306 + sec->output_offset
13307 + sec->output_section->vma);
13309 else if (toc_symndx != 0)
13311 r_symndx = toc_symndx;
13312 rel->r_addend = toc_addend;
13314 r_type = R_PPC64_TPREL16_HA;
13315 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13316 if (offset != (bfd_vma) -1)
13318 rel[1].r_info = ELF64_R_INFO (r_symndx,
13319 R_PPC64_TPREL16_LO);
13320 rel[1].r_offset = offset + d_offset;
13321 rel[1].r_addend = rel->r_addend;
13324 bfd_put_32 (output_bfd, insn1,
13325 contents + rel->r_offset - d_offset);
13326 if (offset != (bfd_vma) -1)
13328 insn3 = bfd_get_32 (output_bfd,
13329 contents + offset + 4);
13331 || insn3 == CROR_151515 || insn3 == CROR_313131)
13333 rel[1].r_offset += 4;
13334 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13337 bfd_put_32 (output_bfd, insn2, contents + offset);
13339 if ((tls_mask & tls_gd) == 0
13340 && (tls_gd == 0 || toc_symndx != 0))
13342 /* We changed the symbol. Start over in order
13343 to get h, sym, sec etc. right. */
13350 case R_PPC64_TLSGD:
13351 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13353 unsigned int insn2, insn3;
13354 bfd_vma offset = rel->r_offset;
13356 if ((tls_mask & TLS_TPRELGD) != 0)
13359 r_type = R_PPC64_NONE;
13360 insn2 = 0x7c636a14; /* add 3,3,13 */
13365 if (toc_symndx != 0)
13367 r_symndx = toc_symndx;
13368 rel->r_addend = toc_addend;
13370 r_type = R_PPC64_TPREL16_LO;
13371 rel->r_offset = offset + d_offset;
13372 insn2 = 0x38630000; /* addi 3,3,0 */
13374 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13375 /* Zap the reloc on the _tls_get_addr call too. */
13376 BFD_ASSERT (offset == rel[1].r_offset);
13377 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13378 insn3 = bfd_get_32 (output_bfd,
13379 contents + offset + 4);
13381 || insn3 == CROR_151515 || insn3 == CROR_313131)
13383 rel->r_offset += 4;
13384 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13387 bfd_put_32 (output_bfd, insn2, contents + offset);
13388 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13396 case R_PPC64_TLSLD:
13397 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13399 unsigned int insn2, insn3;
13400 bfd_vma offset = rel->r_offset;
13403 sec = local_sections[toc_symndx];
13405 r_symndx < symtab_hdr->sh_info;
13407 if (local_sections[r_symndx] == sec)
13409 if (r_symndx >= symtab_hdr->sh_info)
13410 r_symndx = STN_UNDEF;
13411 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13412 if (r_symndx != STN_UNDEF)
13413 rel->r_addend -= (local_syms[r_symndx].st_value
13414 + sec->output_offset
13415 + sec->output_section->vma);
13417 r_type = R_PPC64_TPREL16_LO;
13418 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13419 rel->r_offset = offset + d_offset;
13420 /* Zap the reloc on the _tls_get_addr call too. */
13421 BFD_ASSERT (offset == rel[1].r_offset);
13422 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13423 insn2 = 0x38630000; /* addi 3,3,0 */
13424 insn3 = bfd_get_32 (output_bfd,
13425 contents + offset + 4);
13427 || insn3 == CROR_151515 || insn3 == CROR_313131)
13429 rel->r_offset += 4;
13430 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13433 bfd_put_32 (output_bfd, insn2, contents + offset);
13439 case R_PPC64_DTPMOD64:
13440 if (rel + 1 < relend
13441 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13442 && rel[1].r_offset == rel->r_offset + 8)
13444 if ((tls_mask & TLS_GD) == 0)
13446 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13447 if ((tls_mask & TLS_TPRELGD) != 0)
13448 r_type = R_PPC64_TPREL64;
13451 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13452 r_type = R_PPC64_NONE;
13454 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13459 if ((tls_mask & TLS_LD) == 0)
13461 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13462 r_type = R_PPC64_NONE;
13463 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13468 case R_PPC64_TPREL64:
13469 if ((tls_mask & TLS_TPREL) == 0)
13471 r_type = R_PPC64_NONE;
13472 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13476 case R_PPC64_REL16_HA:
13477 /* If we are generating a non-PIC executable, edit
13478 . 0: addis 2,12,.TOC.-0b@ha
13479 . addi 2,2,.TOC.-0b@l
13480 used by ELFv2 global entry points to set up r2, to
13483 if .TOC. is in range. */
13485 && h != NULL && &h->elf == htab->elf.hgot
13486 && rel + 1 < relend
13487 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13488 && rel[1].r_offset == rel->r_offset + 4
13489 && rel[1].r_addend == rel->r_addend + 4
13490 && relocation + 0x80008000 <= 0xffffffff)
13492 unsigned int insn1, insn2;
13493 bfd_vma offset = rel->r_offset - d_offset;
13494 insn1 = bfd_get_32 (output_bfd, contents + offset);
13495 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13496 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13497 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13499 r_type = R_PPC64_ADDR16_HA;
13500 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13501 rel->r_addend -= d_offset;
13502 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13503 rel[1].r_addend -= d_offset + 4;
13504 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13510 /* Handle other relocations that tweak non-addend part of insn. */
13512 max_br_offset = 1 << 25;
13513 addend = rel->r_addend;
13514 reloc_dest = DEST_NORMAL;
13520 case R_PPC64_TOCSAVE:
13521 if (relocation + addend == (rel->r_offset
13522 + input_section->output_offset
13523 + input_section->output_section->vma)
13524 && tocsave_find (htab, NO_INSERT,
13525 &local_syms, rel, input_bfd))
13527 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13529 || insn == CROR_151515 || insn == CROR_313131)
13530 bfd_put_32 (input_bfd,
13531 STD_R2_0R1 + STK_TOC (htab),
13532 contents + rel->r_offset);
13536 /* Branch taken prediction relocations. */
13537 case R_PPC64_ADDR14_BRTAKEN:
13538 case R_PPC64_REL14_BRTAKEN:
13539 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13542 /* Branch not taken prediction relocations. */
13543 case R_PPC64_ADDR14_BRNTAKEN:
13544 case R_PPC64_REL14_BRNTAKEN:
13545 insn |= bfd_get_32 (output_bfd,
13546 contents + rel->r_offset) & ~(0x01 << 21);
13549 case R_PPC64_REL14:
13550 max_br_offset = 1 << 15;
13553 case R_PPC64_REL24:
13554 /* Calls to functions with a different TOC, such as calls to
13555 shared objects, need to alter the TOC pointer. This is
13556 done using a linkage stub. A REL24 branching to these
13557 linkage stubs needs to be followed by a nop, as the nop
13558 will be replaced with an instruction to restore the TOC
13563 && h->oh->is_func_descriptor)
13564 fdh = ppc_follow_link (h->oh);
13565 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13567 if (stub_entry != NULL
13568 && (stub_entry->stub_type == ppc_stub_plt_call
13569 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13570 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13571 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13573 bfd_boolean can_plt_call = FALSE;
13575 /* All of these stubs will modify r2, so there must be a
13576 branch and link followed by a nop. The nop is
13577 replaced by an insn to restore r2. */
13578 if (rel->r_offset + 8 <= input_section->size)
13582 br = bfd_get_32 (input_bfd,
13583 contents + rel->r_offset);
13588 nop = bfd_get_32 (input_bfd,
13589 contents + rel->r_offset + 4);
13591 || nop == CROR_151515 || nop == CROR_313131)
13594 && (h == htab->tls_get_addr_fd
13595 || h == htab->tls_get_addr)
13596 && !htab->no_tls_get_addr_opt)
13598 /* Special stub used, leave nop alone. */
13601 bfd_put_32 (input_bfd,
13602 LD_R2_0R1 + STK_TOC (htab),
13603 contents + rel->r_offset + 4);
13604 can_plt_call = TRUE;
13609 if (!can_plt_call && h != NULL)
13611 const char *name = h->elf.root.root.string;
13616 if (strncmp (name, "__libc_start_main", 17) == 0
13617 && (name[17] == 0 || name[17] == '@'))
13619 /* Allow crt1 branch to go via a toc adjusting
13620 stub. Other calls that never return could do
13621 the same, if we could detect such. */
13622 can_plt_call = TRUE;
13628 /* g++ as of 20130507 emits self-calls without a
13629 following nop. This is arguably wrong since we
13630 have conflicting information. On the one hand a
13631 global symbol and on the other a local call
13632 sequence, but don't error for this special case.
13633 It isn't possible to cheaply verify we have
13634 exactly such a call. Allow all calls to the same
13636 asection *code_sec = sec;
13638 if (get_opd_info (sec) != NULL)
13640 bfd_vma off = (relocation + addend
13641 - sec->output_section->vma
13642 - sec->output_offset);
13644 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13646 if (code_sec == input_section)
13647 can_plt_call = TRUE;
13652 info->callbacks->einfo
13653 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13654 "recompile with -fPIC"),
13655 input_bfd, input_section, rel->r_offset, sym_name);
13657 bfd_set_error (bfd_error_bad_value);
13662 && (stub_entry->stub_type == ppc_stub_plt_call
13663 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13664 unresolved_reloc = FALSE;
13667 if ((stub_entry == NULL
13668 || stub_entry->stub_type == ppc_stub_long_branch
13669 || stub_entry->stub_type == ppc_stub_plt_branch)
13670 && get_opd_info (sec) != NULL)
13672 /* The branch destination is the value of the opd entry. */
13673 bfd_vma off = (relocation + addend
13674 - sec->output_section->vma
13675 - sec->output_offset);
13676 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13677 if (dest != (bfd_vma) -1)
13681 reloc_dest = DEST_OPD;
13685 /* If the branch is out of reach we ought to have a long
13687 from = (rel->r_offset
13688 + input_section->output_offset
13689 + input_section->output_section->vma);
13691 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13695 if (stub_entry != NULL
13696 && (stub_entry->stub_type == ppc_stub_long_branch
13697 || stub_entry->stub_type == ppc_stub_plt_branch)
13698 && (r_type == R_PPC64_ADDR14_BRTAKEN
13699 || r_type == R_PPC64_ADDR14_BRNTAKEN
13700 || (relocation + addend - from + max_br_offset
13701 < 2 * max_br_offset)))
13702 /* Don't use the stub if this branch is in range. */
13705 if (stub_entry != NULL)
13707 /* Munge up the value and addend so that we call the stub
13708 rather than the procedure directly. */
13709 relocation = (stub_entry->stub_offset
13710 + stub_entry->stub_sec->output_offset
13711 + stub_entry->stub_sec->output_section->vma);
13713 reloc_dest = DEST_STUB;
13715 if ((stub_entry->stub_type == ppc_stub_plt_call
13716 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13717 && (ALWAYS_EMIT_R2SAVE
13718 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13719 && rel + 1 < relend
13720 && rel[1].r_offset == rel->r_offset + 4
13721 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13729 /* Set 'a' bit. This is 0b00010 in BO field for branch
13730 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13731 for branch on CTR insns (BO == 1a00t or 1a01t). */
13732 if ((insn & (0x14 << 21)) == (0x04 << 21))
13733 insn |= 0x02 << 21;
13734 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13735 insn |= 0x08 << 21;
13741 /* Invert 'y' bit if not the default. */
13742 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13743 insn ^= 0x01 << 21;
13746 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13749 /* NOP out calls to undefined weak functions.
13750 We can thus call a weak function without first
13751 checking whether the function is defined. */
13753 && h->elf.root.type == bfd_link_hash_undefweak
13754 && h->elf.dynindx == -1
13755 && r_type == R_PPC64_REL24
13759 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13765 /* Set `addend'. */
13770 info->callbacks->einfo
13771 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13772 input_bfd, (int) r_type, sym_name);
13774 bfd_set_error (bfd_error_bad_value);
13780 case R_PPC64_TLSGD:
13781 case R_PPC64_TLSLD:
13782 case R_PPC64_TOCSAVE:
13783 case R_PPC64_GNU_VTINHERIT:
13784 case R_PPC64_GNU_VTENTRY:
13787 /* GOT16 relocations. Like an ADDR16 using the symbol's
13788 address in the GOT as relocation value instead of the
13789 symbol's value itself. Also, create a GOT entry for the
13790 symbol and put the symbol value there. */
13791 case R_PPC64_GOT_TLSGD16:
13792 case R_PPC64_GOT_TLSGD16_LO:
13793 case R_PPC64_GOT_TLSGD16_HI:
13794 case R_PPC64_GOT_TLSGD16_HA:
13795 tls_type = TLS_TLS | TLS_GD;
13798 case R_PPC64_GOT_TLSLD16:
13799 case R_PPC64_GOT_TLSLD16_LO:
13800 case R_PPC64_GOT_TLSLD16_HI:
13801 case R_PPC64_GOT_TLSLD16_HA:
13802 tls_type = TLS_TLS | TLS_LD;
13805 case R_PPC64_GOT_TPREL16_DS:
13806 case R_PPC64_GOT_TPREL16_LO_DS:
13807 case R_PPC64_GOT_TPREL16_HI:
13808 case R_PPC64_GOT_TPREL16_HA:
13809 tls_type = TLS_TLS | TLS_TPREL;
13812 case R_PPC64_GOT_DTPREL16_DS:
13813 case R_PPC64_GOT_DTPREL16_LO_DS:
13814 case R_PPC64_GOT_DTPREL16_HI:
13815 case R_PPC64_GOT_DTPREL16_HA:
13816 tls_type = TLS_TLS | TLS_DTPREL;
13819 case R_PPC64_GOT16:
13820 case R_PPC64_GOT16_LO:
13821 case R_PPC64_GOT16_HI:
13822 case R_PPC64_GOT16_HA:
13823 case R_PPC64_GOT16_DS:
13824 case R_PPC64_GOT16_LO_DS:
13827 /* Relocation is to the entry for this symbol in the global
13832 unsigned long indx = 0;
13833 struct got_entry *ent;
13835 if (tls_type == (TLS_TLS | TLS_LD)
13837 || !h->elf.def_dynamic))
13838 ent = ppc64_tlsld_got (input_bfd);
13844 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13845 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13848 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
13849 /* This is actually a static link, or it is a
13850 -Bsymbolic link and the symbol is defined
13851 locally, or the symbol was forced to be local
13852 because of a version file. */
13856 BFD_ASSERT (h->elf.dynindx != -1);
13857 indx = h->elf.dynindx;
13858 unresolved_reloc = FALSE;
13860 ent = h->elf.got.glist;
13864 if (local_got_ents == NULL)
13866 ent = local_got_ents[r_symndx];
13869 for (; ent != NULL; ent = ent->next)
13870 if (ent->addend == orig_rel.r_addend
13871 && ent->owner == input_bfd
13872 && ent->tls_type == tls_type)
13878 if (ent->is_indirect)
13879 ent = ent->got.ent;
13880 offp = &ent->got.offset;
13881 got = ppc64_elf_tdata (ent->owner)->got;
13885 /* The offset must always be a multiple of 8. We use the
13886 least significant bit to record whether we have already
13887 processed this entry. */
13889 if ((off & 1) != 0)
13893 /* Generate relocs for the dynamic linker, except in
13894 the case of TLSLD where we'll use one entry per
13902 ? h->elf.type == STT_GNU_IFUNC
13903 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13905 relgot = htab->elf.irelplt;
13906 else if ((info->shared || indx != 0)
13908 || (tls_type == (TLS_TLS | TLS_LD)
13909 && !h->elf.def_dynamic)
13910 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13911 || h->elf.root.type != bfd_link_hash_undefweak))
13912 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13913 if (relgot != NULL)
13915 outrel.r_offset = (got->output_section->vma
13916 + got->output_offset
13918 outrel.r_addend = addend;
13919 if (tls_type & (TLS_LD | TLS_GD))
13921 outrel.r_addend = 0;
13922 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13923 if (tls_type == (TLS_TLS | TLS_GD))
13925 loc = relgot->contents;
13926 loc += (relgot->reloc_count++
13927 * sizeof (Elf64_External_Rela));
13928 bfd_elf64_swap_reloca_out (output_bfd,
13930 outrel.r_offset += 8;
13931 outrel.r_addend = addend;
13933 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13936 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13937 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13938 else if (tls_type == (TLS_TLS | TLS_TPREL))
13939 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13940 else if (indx != 0)
13941 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13945 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13947 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13949 /* Write the .got section contents for the sake
13951 loc = got->contents + off;
13952 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13956 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13958 outrel.r_addend += relocation;
13959 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13960 outrel.r_addend -= htab->elf.tls_sec->vma;
13962 loc = relgot->contents;
13963 loc += (relgot->reloc_count++
13964 * sizeof (Elf64_External_Rela));
13965 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13968 /* Init the .got section contents here if we're not
13969 emitting a reloc. */
13972 relocation += addend;
13973 if (tls_type == (TLS_TLS | TLS_LD))
13975 else if (tls_type != 0)
13977 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13978 if (tls_type == (TLS_TLS | TLS_TPREL))
13979 relocation += DTP_OFFSET - TP_OFFSET;
13981 if (tls_type == (TLS_TLS | TLS_GD))
13983 bfd_put_64 (output_bfd, relocation,
13984 got->contents + off + 8);
13989 bfd_put_64 (output_bfd, relocation,
13990 got->contents + off);
13994 if (off >= (bfd_vma) -2)
13997 relocation = got->output_section->vma + got->output_offset + off;
13998 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
14002 case R_PPC64_PLT16_HA:
14003 case R_PPC64_PLT16_HI:
14004 case R_PPC64_PLT16_LO:
14005 case R_PPC64_PLT32:
14006 case R_PPC64_PLT64:
14007 /* Relocation is to the entry for this symbol in the
14008 procedure linkage table. */
14010 /* Resolve a PLT reloc against a local symbol directly,
14011 without using the procedure linkage table. */
14015 /* It's possible that we didn't make a PLT entry for this
14016 symbol. This happens when statically linking PIC code,
14017 or when using -Bsymbolic. Go find a match if there is a
14019 if (htab->elf.splt != NULL)
14021 struct plt_entry *ent;
14022 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14023 if (ent->plt.offset != (bfd_vma) -1
14024 && ent->addend == orig_rel.r_addend)
14026 relocation = (htab->elf.splt->output_section->vma
14027 + htab->elf.splt->output_offset
14028 + ent->plt.offset);
14029 unresolved_reloc = FALSE;
14036 /* Relocation value is TOC base. */
14037 relocation = TOCstart;
14038 if (r_symndx == STN_UNDEF)
14039 relocation += htab->stub_group[input_section->id].toc_off;
14040 else if (unresolved_reloc)
14042 else if (sec != NULL && sec->id <= htab->top_id)
14043 relocation += htab->stub_group[sec->id].toc_off;
14045 unresolved_reloc = TRUE;
14048 /* TOC16 relocs. We want the offset relative to the TOC base,
14049 which is the address of the start of the TOC plus 0x8000.
14050 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14052 case R_PPC64_TOC16:
14053 case R_PPC64_TOC16_LO:
14054 case R_PPC64_TOC16_HI:
14055 case R_PPC64_TOC16_DS:
14056 case R_PPC64_TOC16_LO_DS:
14057 case R_PPC64_TOC16_HA:
14058 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14061 /* Relocate against the beginning of the section. */
14062 case R_PPC64_SECTOFF:
14063 case R_PPC64_SECTOFF_LO:
14064 case R_PPC64_SECTOFF_HI:
14065 case R_PPC64_SECTOFF_DS:
14066 case R_PPC64_SECTOFF_LO_DS:
14067 case R_PPC64_SECTOFF_HA:
14069 addend -= sec->output_section->vma;
14072 case R_PPC64_REL16:
14073 case R_PPC64_REL16_LO:
14074 case R_PPC64_REL16_HI:
14075 case R_PPC64_REL16_HA:
14078 case R_PPC64_REL14:
14079 case R_PPC64_REL14_BRNTAKEN:
14080 case R_PPC64_REL14_BRTAKEN:
14081 case R_PPC64_REL24:
14084 case R_PPC64_TPREL16:
14085 case R_PPC64_TPREL16_LO:
14086 case R_PPC64_TPREL16_HI:
14087 case R_PPC64_TPREL16_HA:
14088 case R_PPC64_TPREL16_DS:
14089 case R_PPC64_TPREL16_LO_DS:
14090 case R_PPC64_TPREL16_HIGH:
14091 case R_PPC64_TPREL16_HIGHA:
14092 case R_PPC64_TPREL16_HIGHER:
14093 case R_PPC64_TPREL16_HIGHERA:
14094 case R_PPC64_TPREL16_HIGHEST:
14095 case R_PPC64_TPREL16_HIGHESTA:
14097 && h->elf.root.type == bfd_link_hash_undefweak
14098 && h->elf.dynindx == -1)
14100 /* Make this relocation against an undefined weak symbol
14101 resolve to zero. This is really just a tweak, since
14102 code using weak externs ought to check that they are
14103 defined before using them. */
14104 bfd_byte *p = contents + rel->r_offset - d_offset;
14106 insn = bfd_get_32 (output_bfd, p);
14107 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14109 bfd_put_32 (output_bfd, insn, p);
14112 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14114 /* The TPREL16 relocs shouldn't really be used in shared
14115 libs as they will result in DT_TEXTREL being set, but
14116 support them anyway. */
14120 case R_PPC64_DTPREL16:
14121 case R_PPC64_DTPREL16_LO:
14122 case R_PPC64_DTPREL16_HI:
14123 case R_PPC64_DTPREL16_HA:
14124 case R_PPC64_DTPREL16_DS:
14125 case R_PPC64_DTPREL16_LO_DS:
14126 case R_PPC64_DTPREL16_HIGH:
14127 case R_PPC64_DTPREL16_HIGHA:
14128 case R_PPC64_DTPREL16_HIGHER:
14129 case R_PPC64_DTPREL16_HIGHERA:
14130 case R_PPC64_DTPREL16_HIGHEST:
14131 case R_PPC64_DTPREL16_HIGHESTA:
14132 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14135 case R_PPC64_DTPMOD64:
14140 case R_PPC64_TPREL64:
14141 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14144 case R_PPC64_DTPREL64:
14145 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14148 /* Relocations that may need to be propagated if this is a
14150 case R_PPC64_REL30:
14151 case R_PPC64_REL32:
14152 case R_PPC64_REL64:
14153 case R_PPC64_ADDR14:
14154 case R_PPC64_ADDR14_BRNTAKEN:
14155 case R_PPC64_ADDR14_BRTAKEN:
14156 case R_PPC64_ADDR16:
14157 case R_PPC64_ADDR16_DS:
14158 case R_PPC64_ADDR16_HA:
14159 case R_PPC64_ADDR16_HI:
14160 case R_PPC64_ADDR16_HIGH:
14161 case R_PPC64_ADDR16_HIGHA:
14162 case R_PPC64_ADDR16_HIGHER:
14163 case R_PPC64_ADDR16_HIGHERA:
14164 case R_PPC64_ADDR16_HIGHEST:
14165 case R_PPC64_ADDR16_HIGHESTA:
14166 case R_PPC64_ADDR16_LO:
14167 case R_PPC64_ADDR16_LO_DS:
14168 case R_PPC64_ADDR24:
14169 case R_PPC64_ADDR32:
14170 case R_PPC64_ADDR64:
14171 case R_PPC64_UADDR16:
14172 case R_PPC64_UADDR32:
14173 case R_PPC64_UADDR64:
14175 if ((input_section->flags & SEC_ALLOC) == 0)
14178 if (NO_OPD_RELOCS && is_opd)
14183 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14184 || h->elf.root.type != bfd_link_hash_undefweak)
14185 && (must_be_dyn_reloc (info, r_type)
14186 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14187 || (ELIMINATE_COPY_RELOCS
14190 && h->elf.dynindx != -1
14191 && !h->elf.non_got_ref
14192 && !h->elf.def_regular)
14195 ? h->elf.type == STT_GNU_IFUNC
14196 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14198 bfd_boolean skip, relocate;
14202 /* When generating a dynamic object, these relocations
14203 are copied into the output file to be resolved at run
14209 out_off = _bfd_elf_section_offset (output_bfd, info,
14210 input_section, rel->r_offset);
14211 if (out_off == (bfd_vma) -1)
14213 else if (out_off == (bfd_vma) -2)
14214 skip = TRUE, relocate = TRUE;
14215 out_off += (input_section->output_section->vma
14216 + input_section->output_offset);
14217 outrel.r_offset = out_off;
14218 outrel.r_addend = rel->r_addend;
14220 /* Optimize unaligned reloc use. */
14221 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14222 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14223 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14224 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14225 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14226 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14227 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14228 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14229 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14232 memset (&outrel, 0, sizeof outrel);
14233 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
14235 && r_type != R_PPC64_TOC)
14237 BFD_ASSERT (h->elf.dynindx != -1);
14238 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14242 /* This symbol is local, or marked to become local,
14243 or this is an opd section reloc which must point
14244 at a local function. */
14245 outrel.r_addend += relocation;
14246 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14248 if (is_opd && h != NULL)
14250 /* Lie about opd entries. This case occurs
14251 when building shared libraries and we
14252 reference a function in another shared
14253 lib. The same thing happens for a weak
14254 definition in an application that's
14255 overridden by a strong definition in a
14256 shared lib. (I believe this is a generic
14257 bug in binutils handling of weak syms.)
14258 In these cases we won't use the opd
14259 entry in this lib. */
14260 unresolved_reloc = FALSE;
14263 && r_type == R_PPC64_ADDR64
14265 ? h->elf.type == STT_GNU_IFUNC
14266 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14267 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14270 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14272 /* We need to relocate .opd contents for ld.so.
14273 Prelink also wants simple and consistent rules
14274 for relocs. This make all RELATIVE relocs have
14275 *r_offset equal to r_addend. */
14284 ? h->elf.type == STT_GNU_IFUNC
14285 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14287 info->callbacks->einfo
14288 (_("%P: %H: %s for indirect "
14289 "function `%T' unsupported\n"),
14290 input_bfd, input_section, rel->r_offset,
14291 ppc64_elf_howto_table[r_type]->name,
14295 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14297 else if (sec == NULL || sec->owner == NULL)
14299 bfd_set_error (bfd_error_bad_value);
14306 osec = sec->output_section;
14307 indx = elf_section_data (osec)->dynindx;
14311 if ((osec->flags & SEC_READONLY) == 0
14312 && htab->elf.data_index_section != NULL)
14313 osec = htab->elf.data_index_section;
14315 osec = htab->elf.text_index_section;
14316 indx = elf_section_data (osec)->dynindx;
14318 BFD_ASSERT (indx != 0);
14320 /* We are turning this relocation into one
14321 against a section symbol, so subtract out
14322 the output section's address but not the
14323 offset of the input section in the output
14325 outrel.r_addend -= osec->vma;
14328 outrel.r_info = ELF64_R_INFO (indx, r_type);
14332 sreloc = elf_section_data (input_section)->sreloc;
14334 ? h->elf.type == STT_GNU_IFUNC
14335 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14336 sreloc = htab->elf.irelplt;
14337 if (sreloc == NULL)
14340 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14343 loc = sreloc->contents;
14344 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14345 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14347 /* If this reloc is against an external symbol, it will
14348 be computed at runtime, so there's no need to do
14349 anything now. However, for the sake of prelink ensure
14350 that the section contents are a known value. */
14353 unresolved_reloc = FALSE;
14354 /* The value chosen here is quite arbitrary as ld.so
14355 ignores section contents except for the special
14356 case of .opd where the contents might be accessed
14357 before relocation. Choose zero, as that won't
14358 cause reloc overflow. */
14361 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14362 to improve backward compatibility with older
14364 if (r_type == R_PPC64_ADDR64)
14365 addend = outrel.r_addend;
14366 /* Adjust pc_relative relocs to have zero in *r_offset. */
14367 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14368 addend = (input_section->output_section->vma
14369 + input_section->output_offset
14376 case R_PPC64_GLOB_DAT:
14377 case R_PPC64_JMP_SLOT:
14378 case R_PPC64_JMP_IREL:
14379 case R_PPC64_RELATIVE:
14380 /* We shouldn't ever see these dynamic relocs in relocatable
14382 /* Fall through. */
14384 case R_PPC64_PLTGOT16:
14385 case R_PPC64_PLTGOT16_DS:
14386 case R_PPC64_PLTGOT16_HA:
14387 case R_PPC64_PLTGOT16_HI:
14388 case R_PPC64_PLTGOT16_LO:
14389 case R_PPC64_PLTGOT16_LO_DS:
14390 case R_PPC64_PLTREL32:
14391 case R_PPC64_PLTREL64:
14392 /* These ones haven't been implemented yet. */
14394 info->callbacks->einfo
14395 (_("%P: %B: %s is not supported for `%T'\n"),
14397 ppc64_elf_howto_table[r_type]->name, sym_name);
14399 bfd_set_error (bfd_error_invalid_operation);
14404 /* Multi-instruction sequences that access the TOC can be
14405 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14406 to nop; addi rb,r2,x; */
14412 case R_PPC64_GOT_TLSLD16_HI:
14413 case R_PPC64_GOT_TLSGD16_HI:
14414 case R_PPC64_GOT_TPREL16_HI:
14415 case R_PPC64_GOT_DTPREL16_HI:
14416 case R_PPC64_GOT16_HI:
14417 case R_PPC64_TOC16_HI:
14418 /* These relocs would only be useful if building up an
14419 offset to later add to r2, perhaps in an indexed
14420 addressing mode instruction. Don't try to optimize.
14421 Unfortunately, the possibility of someone building up an
14422 offset like this or even with the HA relocs, means that
14423 we need to check the high insn when optimizing the low
14427 case R_PPC64_GOT_TLSLD16_HA:
14428 case R_PPC64_GOT_TLSGD16_HA:
14429 case R_PPC64_GOT_TPREL16_HA:
14430 case R_PPC64_GOT_DTPREL16_HA:
14431 case R_PPC64_GOT16_HA:
14432 case R_PPC64_TOC16_HA:
14433 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14434 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14436 bfd_byte *p = contents + (rel->r_offset & ~3);
14437 bfd_put_32 (input_bfd, NOP, p);
14441 case R_PPC64_GOT_TLSLD16_LO:
14442 case R_PPC64_GOT_TLSGD16_LO:
14443 case R_PPC64_GOT_TPREL16_LO_DS:
14444 case R_PPC64_GOT_DTPREL16_LO_DS:
14445 case R_PPC64_GOT16_LO:
14446 case R_PPC64_GOT16_LO_DS:
14447 case R_PPC64_TOC16_LO:
14448 case R_PPC64_TOC16_LO_DS:
14449 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14450 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14452 bfd_byte *p = contents + (rel->r_offset & ~3);
14453 insn = bfd_get_32 (input_bfd, p);
14454 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14456 /* Transform addic to addi when we change reg. */
14457 insn &= ~((0x3f << 26) | (0x1f << 16));
14458 insn |= (14u << 26) | (2 << 16);
14462 insn &= ~(0x1f << 16);
14465 bfd_put_32 (input_bfd, insn, p);
14470 /* Do any further special processing. */
14476 case R_PPC64_REL16_HA:
14477 case R_PPC64_ADDR16_HA:
14478 case R_PPC64_ADDR16_HIGHA:
14479 case R_PPC64_ADDR16_HIGHERA:
14480 case R_PPC64_ADDR16_HIGHESTA:
14481 case R_PPC64_TOC16_HA:
14482 case R_PPC64_SECTOFF_HA:
14483 case R_PPC64_TPREL16_HA:
14484 case R_PPC64_TPREL16_HIGHA:
14485 case R_PPC64_TPREL16_HIGHERA:
14486 case R_PPC64_TPREL16_HIGHESTA:
14487 case R_PPC64_DTPREL16_HA:
14488 case R_PPC64_DTPREL16_HIGHA:
14489 case R_PPC64_DTPREL16_HIGHERA:
14490 case R_PPC64_DTPREL16_HIGHESTA:
14491 /* It's just possible that this symbol is a weak symbol
14492 that's not actually defined anywhere. In that case,
14493 'sec' would be NULL, and we should leave the symbol
14494 alone (it will be set to zero elsewhere in the link). */
14499 case R_PPC64_GOT16_HA:
14500 case R_PPC64_PLTGOT16_HA:
14501 case R_PPC64_PLT16_HA:
14502 case R_PPC64_GOT_TLSGD16_HA:
14503 case R_PPC64_GOT_TLSLD16_HA:
14504 case R_PPC64_GOT_TPREL16_HA:
14505 case R_PPC64_GOT_DTPREL16_HA:
14506 /* Add 0x10000 if sign bit in 0:15 is set.
14507 Bits 0:15 are not used. */
14511 case R_PPC64_ADDR16_DS:
14512 case R_PPC64_ADDR16_LO_DS:
14513 case R_PPC64_GOT16_DS:
14514 case R_PPC64_GOT16_LO_DS:
14515 case R_PPC64_PLT16_LO_DS:
14516 case R_PPC64_SECTOFF_DS:
14517 case R_PPC64_SECTOFF_LO_DS:
14518 case R_PPC64_TOC16_DS:
14519 case R_PPC64_TOC16_LO_DS:
14520 case R_PPC64_PLTGOT16_DS:
14521 case R_PPC64_PLTGOT16_LO_DS:
14522 case R_PPC64_GOT_TPREL16_DS:
14523 case R_PPC64_GOT_TPREL16_LO_DS:
14524 case R_PPC64_GOT_DTPREL16_DS:
14525 case R_PPC64_GOT_DTPREL16_LO_DS:
14526 case R_PPC64_TPREL16_DS:
14527 case R_PPC64_TPREL16_LO_DS:
14528 case R_PPC64_DTPREL16_DS:
14529 case R_PPC64_DTPREL16_LO_DS:
14530 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14532 /* If this reloc is against an lq insn, then the value must be
14533 a multiple of 16. This is somewhat of a hack, but the
14534 "correct" way to do this by defining _DQ forms of all the
14535 _DS relocs bloats all reloc switches in this file. It
14536 doesn't seem to make much sense to use any of these relocs
14537 in data, so testing the insn should be safe. */
14538 if ((insn & (0x3f << 26)) == (56u << 26))
14540 if (((relocation + addend) & mask) != 0)
14542 info->callbacks->einfo
14543 (_("%P: %H: error: %s not a multiple of %u\n"),
14544 input_bfd, input_section, rel->r_offset,
14545 ppc64_elf_howto_table[r_type]->name,
14547 bfd_set_error (bfd_error_bad_value);
14554 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14555 because such sections are not SEC_ALLOC and thus ld.so will
14556 not process them. */
14557 if (unresolved_reloc
14558 && !((input_section->flags & SEC_DEBUGGING) != 0
14559 && h->elf.def_dynamic)
14560 && _bfd_elf_section_offset (output_bfd, info, input_section,
14561 rel->r_offset) != (bfd_vma) -1)
14563 info->callbacks->einfo
14564 (_("%P: %H: unresolvable %s against `%T'\n"),
14565 input_bfd, input_section, rel->r_offset,
14566 ppc64_elf_howto_table[(int) r_type]->name,
14567 h->elf.root.root.string);
14571 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
14579 if (r != bfd_reloc_ok)
14581 char *more_info = NULL;
14582 const char *reloc_name = ppc64_elf_howto_table[r_type]->name;
14584 if (reloc_dest != DEST_NORMAL)
14586 more_info = bfd_malloc (strlen (reloc_name) + 8);
14587 if (more_info != NULL)
14589 strcpy (more_info, reloc_name);
14590 strcat (more_info, (reloc_dest == DEST_OPD
14591 ? " (OPD)" : " (stub)"));
14592 reloc_name = more_info;
14596 if (r == bfd_reloc_overflow)
14601 && h->elf.root.type == bfd_link_hash_undefweak
14602 && ppc64_elf_howto_table[r_type]->pc_relative)
14604 /* Assume this is a call protected by other code that
14605 detects the symbol is undefined. If this is the case,
14606 we can safely ignore the overflow. If not, the
14607 program is hosed anyway, and a little warning isn't
14613 if (!((*info->callbacks->reloc_overflow)
14614 (info, &h->elf.root, sym_name,
14615 reloc_name, orig_rel.r_addend,
14616 input_bfd, input_section, rel->r_offset)))
14621 info->callbacks->einfo
14622 (_("%P: %H: %s against `%T': error %d\n"),
14623 input_bfd, input_section, rel->r_offset,
14624 reloc_name, sym_name, (int) r);
14627 if (more_info != NULL)
14632 /* If we're emitting relocations, then shortly after this function
14633 returns, reloc offsets and addends for this section will be
14634 adjusted. Worse, reloc symbol indices will be for the output
14635 file rather than the input. Save a copy of the relocs for
14636 opd_entry_value. */
14637 if (is_opd && (info->emitrelocations || info->relocatable))
14640 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14641 rel = bfd_alloc (input_bfd, amt);
14642 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14643 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14646 memcpy (rel, relocs, amt);
14651 /* Adjust the value of any local symbols in opd sections. */
14654 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14655 const char *name ATTRIBUTE_UNUSED,
14656 Elf_Internal_Sym *elfsym,
14657 asection *input_sec,
14658 struct elf_link_hash_entry *h)
14660 struct _opd_sec_data *opd;
14667 opd = get_opd_info (input_sec);
14668 if (opd == NULL || opd->adjust == NULL)
14671 value = elfsym->st_value - input_sec->output_offset;
14672 if (!info->relocatable)
14673 value -= input_sec->output_section->vma;
14675 adjust = opd->adjust[value / 8];
14679 elfsym->st_value += adjust;
14683 /* Finish up dynamic symbol handling. We set the contents of various
14684 dynamic sections here. */
14687 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14688 struct bfd_link_info *info,
14689 struct elf_link_hash_entry *h,
14690 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14692 struct ppc_link_hash_table *htab;
14693 struct plt_entry *ent;
14694 Elf_Internal_Rela rela;
14697 htab = ppc_hash_table (info);
14701 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14702 if (ent->plt.offset != (bfd_vma) -1)
14704 /* This symbol has an entry in the procedure linkage
14705 table. Set it up. */
14706 if (!htab->elf.dynamic_sections_created
14707 || h->dynindx == -1)
14709 BFD_ASSERT (h->type == STT_GNU_IFUNC
14711 && (h->root.type == bfd_link_hash_defined
14712 || h->root.type == bfd_link_hash_defweak));
14713 rela.r_offset = (htab->elf.iplt->output_section->vma
14714 + htab->elf.iplt->output_offset
14715 + ent->plt.offset);
14717 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14719 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14720 rela.r_addend = (h->root.u.def.value
14721 + h->root.u.def.section->output_offset
14722 + h->root.u.def.section->output_section->vma
14724 loc = (htab->elf.irelplt->contents
14725 + (htab->elf.irelplt->reloc_count++
14726 * sizeof (Elf64_External_Rela)));
14730 rela.r_offset = (htab->elf.splt->output_section->vma
14731 + htab->elf.splt->output_offset
14732 + ent->plt.offset);
14733 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14734 rela.r_addend = ent->addend;
14735 loc = (htab->elf.srelplt->contents
14736 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14737 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14739 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14741 if (!htab->opd_abi)
14743 if (!h->def_regular)
14745 /* Mark the symbol as undefined, rather than as
14746 defined in glink. Leave the value if there were
14747 any relocations where pointer equality matters
14748 (this is a clue for the dynamic linker, to make
14749 function pointer comparisons work between an
14750 application and shared library), otherwise set it
14752 sym->st_shndx = SHN_UNDEF;
14753 if (!h->pointer_equality_needed)
14755 else if (!h->ref_regular_nonweak)
14757 /* This breaks function pointer comparisons, but
14758 that is better than breaking tests for a NULL
14759 function pointer. */
14768 /* This symbol needs a copy reloc. Set it up. */
14770 if (h->dynindx == -1
14771 || (h->root.type != bfd_link_hash_defined
14772 && h->root.type != bfd_link_hash_defweak)
14773 || htab->relbss == NULL)
14776 rela.r_offset = (h->root.u.def.value
14777 + h->root.u.def.section->output_section->vma
14778 + h->root.u.def.section->output_offset);
14779 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14781 loc = htab->relbss->contents;
14782 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14783 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14789 /* Used to decide how to sort relocs in an optimal manner for the
14790 dynamic linker, before writing them out. */
14792 static enum elf_reloc_type_class
14793 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14794 const asection *rel_sec,
14795 const Elf_Internal_Rela *rela)
14797 enum elf_ppc64_reloc_type r_type;
14798 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14800 if (rel_sec == htab->elf.irelplt)
14801 return reloc_class_ifunc;
14803 r_type = ELF64_R_TYPE (rela->r_info);
14806 case R_PPC64_RELATIVE:
14807 return reloc_class_relative;
14808 case R_PPC64_JMP_SLOT:
14809 return reloc_class_plt;
14811 return reloc_class_copy;
14813 return reloc_class_normal;
14817 /* Finish up the dynamic sections. */
14820 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14821 struct bfd_link_info *info)
14823 struct ppc_link_hash_table *htab;
14827 htab = ppc_hash_table (info);
14831 dynobj = htab->elf.dynobj;
14832 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14834 if (htab->elf.dynamic_sections_created)
14836 Elf64_External_Dyn *dyncon, *dynconend;
14838 if (sdyn == NULL || htab->elf.sgot == NULL)
14841 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14842 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14843 for (; dyncon < dynconend; dyncon++)
14845 Elf_Internal_Dyn dyn;
14848 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14855 case DT_PPC64_GLINK:
14857 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14858 /* We stupidly defined DT_PPC64_GLINK to be the start
14859 of glink rather than the first entry point, which is
14860 what ld.so needs, and now have a bigger stub to
14861 support automatic multiple TOCs. */
14862 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
14866 s = bfd_get_section_by_name (output_bfd, ".opd");
14869 dyn.d_un.d_ptr = s->vma;
14873 if (htab->do_multi_toc && htab->multi_toc_needed)
14874 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
14877 case DT_PPC64_OPDSZ:
14878 s = bfd_get_section_by_name (output_bfd, ".opd");
14881 dyn.d_un.d_val = s->size;
14885 s = htab->elf.splt;
14886 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14890 s = htab->elf.srelplt;
14891 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14895 dyn.d_un.d_val = htab->elf.srelplt->size;
14899 /* Don't count procedure linkage table relocs in the
14900 overall reloc count. */
14901 s = htab->elf.srelplt;
14904 dyn.d_un.d_val -= s->size;
14908 /* We may not be using the standard ELF linker script.
14909 If .rela.plt is the first .rela section, we adjust
14910 DT_RELA to not include it. */
14911 s = htab->elf.srelplt;
14914 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14916 dyn.d_un.d_ptr += s->size;
14920 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14924 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
14926 /* Fill in the first entry in the global offset table.
14927 We use it to hold the link-time TOCbase. */
14928 bfd_put_64 (output_bfd,
14929 elf_gp (output_bfd) + TOC_BASE_OFF,
14930 htab->elf.sgot->contents);
14932 /* Set .got entry size. */
14933 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
14936 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
14938 /* Set .plt entry size. */
14939 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
14940 = PLT_ENTRY_SIZE (htab);
14943 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14944 brlt ourselves if emitrelocations. */
14945 if (htab->brlt != NULL
14946 && htab->brlt->reloc_count != 0
14947 && !_bfd_elf_link_output_relocs (output_bfd,
14949 elf_section_data (htab->brlt)->rela.hdr,
14950 elf_section_data (htab->brlt)->relocs,
14954 if (htab->glink != NULL
14955 && htab->glink->reloc_count != 0
14956 && !_bfd_elf_link_output_relocs (output_bfd,
14958 elf_section_data (htab->glink)->rela.hdr,
14959 elf_section_data (htab->glink)->relocs,
14964 if (htab->glink_eh_frame != NULL
14965 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
14966 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14967 htab->glink_eh_frame,
14968 htab->glink_eh_frame->contents))
14971 /* We need to handle writing out multiple GOT sections ourselves,
14972 since we didn't add them to DYNOBJ. We know dynobj is the first
14974 while ((dynobj = dynobj->link_next) != NULL)
14978 if (!is_ppc64_elf (dynobj))
14981 s = ppc64_elf_tdata (dynobj)->got;
14984 && s->output_section != bfd_abs_section_ptr
14985 && !bfd_set_section_contents (output_bfd, s->output_section,
14986 s->contents, s->output_offset,
14989 s = ppc64_elf_tdata (dynobj)->relgot;
14992 && s->output_section != bfd_abs_section_ptr
14993 && !bfd_set_section_contents (output_bfd, s->output_section,
14994 s->contents, s->output_offset,
15002 #include "elf64-target.h"
15004 /* FreeBSD support */
15006 #undef TARGET_LITTLE_SYM
15007 #undef TARGET_LITTLE_NAME
15009 #undef TARGET_BIG_SYM
15010 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
15011 #undef TARGET_BIG_NAME
15012 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15015 #define ELF_OSABI ELFOSABI_FREEBSD
15018 #define elf64_bed elf64_powerpc_fbsd_bed
15020 #include "elf64-target.h"