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 /* Short-cuts to get to dynamic linker sections. */
3924 asection *glink_eh_frame;
3926 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3927 struct ppc_link_hash_entry *tls_get_addr;
3928 struct ppc_link_hash_entry *tls_get_addr_fd;
3930 /* The size of reliplt used by got entry relocs. */
3931 bfd_size_type got_reli_size;
3934 unsigned long stub_count[ppc_stub_plt_call_r2save];
3936 /* Number of stubs against global syms. */
3937 unsigned long stub_globals;
3939 /* Alignment of PLT call stubs. */
3940 unsigned int plt_stub_align:4;
3942 /* Set if we're linking code with function descriptors. */
3943 unsigned int opd_abi:1;
3945 /* Set if PLT call stubs should load r11. */
3946 unsigned int plt_static_chain:1;
3948 /* Set if PLT call stubs need a read-read barrier. */
3949 unsigned int plt_thread_safe:1;
3951 /* Set if we should emit symbols for stubs. */
3952 unsigned int emit_stub_syms:1;
3954 /* Set if __tls_get_addr optimization should not be done. */
3955 unsigned int no_tls_get_addr_opt:1;
3957 /* Support for multiple toc sections. */
3958 unsigned int do_multi_toc:1;
3959 unsigned int multi_toc_needed:1;
3960 unsigned int second_toc_pass:1;
3961 unsigned int do_toc_opt:1;
3964 unsigned int stub_error:1;
3966 /* Temp used by ppc64_elf_process_dot_syms. */
3967 unsigned int twiddled_syms:1;
3969 /* Incremented every time we size stubs. */
3970 unsigned int stub_iteration;
3972 /* Small local sym cache. */
3973 struct sym_cache sym_cache;
3976 /* Rename some of the generic section flags to better document how they
3979 /* Nonzero if this section has TLS related relocations. */
3980 #define has_tls_reloc sec_flg0
3982 /* Nonzero if this section has a call to __tls_get_addr. */
3983 #define has_tls_get_addr_call sec_flg1
3985 /* Nonzero if this section has any toc or got relocs. */
3986 #define has_toc_reloc sec_flg2
3988 /* Nonzero if this section has a call to another section that uses
3990 #define makes_toc_func_call sec_flg3
3992 /* Recursion protection when determining above flag. */
3993 #define call_check_in_progress sec_flg4
3994 #define call_check_done sec_flg5
3996 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3998 #define ppc_hash_table(p) \
3999 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4000 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
4002 #define ppc_stub_hash_lookup(table, string, create, copy) \
4003 ((struct ppc_stub_hash_entry *) \
4004 bfd_hash_lookup ((table), (string), (create), (copy)))
4006 #define ppc_branch_hash_lookup(table, string, create, copy) \
4007 ((struct ppc_branch_hash_entry *) \
4008 bfd_hash_lookup ((table), (string), (create), (copy)))
4010 /* Create an entry in the stub hash table. */
4012 static struct bfd_hash_entry *
4013 stub_hash_newfunc (struct bfd_hash_entry *entry,
4014 struct bfd_hash_table *table,
4017 /* Allocate the structure if it has not already been allocated by a
4021 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4026 /* Call the allocation method of the superclass. */
4027 entry = bfd_hash_newfunc (entry, table, string);
4030 struct ppc_stub_hash_entry *eh;
4032 /* Initialize the local fields. */
4033 eh = (struct ppc_stub_hash_entry *) entry;
4034 eh->stub_type = ppc_stub_none;
4035 eh->stub_sec = NULL;
4036 eh->stub_offset = 0;
4037 eh->target_value = 0;
4038 eh->target_section = NULL;
4048 /* Create an entry in the branch hash table. */
4050 static struct bfd_hash_entry *
4051 branch_hash_newfunc (struct bfd_hash_entry *entry,
4052 struct bfd_hash_table *table,
4055 /* Allocate the structure if it has not already been allocated by a
4059 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4064 /* Call the allocation method of the superclass. */
4065 entry = bfd_hash_newfunc (entry, table, string);
4068 struct ppc_branch_hash_entry *eh;
4070 /* Initialize the local fields. */
4071 eh = (struct ppc_branch_hash_entry *) entry;
4079 /* Create an entry in a ppc64 ELF linker hash table. */
4081 static struct bfd_hash_entry *
4082 link_hash_newfunc (struct bfd_hash_entry *entry,
4083 struct bfd_hash_table *table,
4086 /* Allocate the structure if it has not already been allocated by a
4090 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4095 /* Call the allocation method of the superclass. */
4096 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4099 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4101 memset (&eh->u.stub_cache, 0,
4102 (sizeof (struct ppc_link_hash_entry)
4103 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4105 /* When making function calls, old ABI code references function entry
4106 points (dot symbols), while new ABI code references the function
4107 descriptor symbol. We need to make any combination of reference and
4108 definition work together, without breaking archive linking.
4110 For a defined function "foo" and an undefined call to "bar":
4111 An old object defines "foo" and ".foo", references ".bar" (possibly
4113 A new object defines "foo" and references "bar".
4115 A new object thus has no problem with its undefined symbols being
4116 satisfied by definitions in an old object. On the other hand, the
4117 old object won't have ".bar" satisfied by a new object.
4119 Keep a list of newly added dot-symbols. */
4121 if (string[0] == '.')
4123 struct ppc_link_hash_table *htab;
4125 htab = (struct ppc_link_hash_table *) table;
4126 eh->u.next_dot_sym = htab->dot_syms;
4127 htab->dot_syms = eh;
4134 struct tocsave_entry {
4140 tocsave_htab_hash (const void *p)
4142 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4143 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4147 tocsave_htab_eq (const void *p1, const void *p2)
4149 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4150 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4151 return e1->sec == e2->sec && e1->offset == e2->offset;
4154 /* Create a ppc64 ELF linker hash table. */
4156 static struct bfd_link_hash_table *
4157 ppc64_elf_link_hash_table_create (bfd *abfd)
4159 struct ppc_link_hash_table *htab;
4160 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4162 htab = bfd_zmalloc (amt);
4166 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4167 sizeof (struct ppc_link_hash_entry),
4174 /* Init the stub hash table too. */
4175 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4176 sizeof (struct ppc_stub_hash_entry)))
4179 /* And the branch hash table. */
4180 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4181 sizeof (struct ppc_branch_hash_entry)))
4184 htab->tocsave_htab = htab_try_create (1024,
4188 if (htab->tocsave_htab == NULL)
4191 /* Initializing two fields of the union is just cosmetic. We really
4192 only care about glist, but when compiled on a 32-bit host the
4193 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4194 debugger inspection of these fields look nicer. */
4195 htab->elf.init_got_refcount.refcount = 0;
4196 htab->elf.init_got_refcount.glist = NULL;
4197 htab->elf.init_plt_refcount.refcount = 0;
4198 htab->elf.init_plt_refcount.glist = NULL;
4199 htab->elf.init_got_offset.offset = 0;
4200 htab->elf.init_got_offset.glist = NULL;
4201 htab->elf.init_plt_offset.offset = 0;
4202 htab->elf.init_plt_offset.glist = NULL;
4204 return &htab->elf.root;
4207 /* Free the derived linker hash table. */
4210 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
4212 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
4214 bfd_hash_table_free (&htab->stub_hash_table);
4215 bfd_hash_table_free (&htab->branch_hash_table);
4216 if (htab->tocsave_htab)
4217 htab_delete (htab->tocsave_htab);
4218 _bfd_elf_link_hash_table_free (hash);
4221 /* Create sections for linker generated code. */
4224 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4226 struct ppc_link_hash_table *htab;
4229 htab = ppc_hash_table (info);
4231 /* Create .sfpr for code to save and restore fp regs. */
4232 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4233 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4234 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4236 if (htab->sfpr == NULL
4237 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4240 /* Create .glink for lazy dynamic linking support. */
4241 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4243 if (htab->glink == NULL
4244 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4247 if (!info->no_ld_generated_unwind_info)
4249 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4250 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4251 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4254 if (htab->glink_eh_frame == NULL
4255 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4259 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4260 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4261 if (htab->iplt == NULL
4262 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4265 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4266 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4267 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4270 if (htab->reliplt == NULL
4271 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4274 /* Create branch lookup table for plt_branch stubs. */
4275 flags = (SEC_ALLOC | SEC_LOAD
4276 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4277 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4279 if (htab->brlt == NULL
4280 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4286 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4287 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4288 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4291 if (htab->relbrlt == NULL
4292 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4298 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4301 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4303 struct ppc_link_hash_table *htab;
4305 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4307 /* Always hook our dynamic sections into the first bfd, which is the
4308 linker created stub bfd. This ensures that the GOT header is at
4309 the start of the output TOC section. */
4310 htab = ppc_hash_table (info);
4313 htab->stub_bfd = abfd;
4314 htab->elf.dynobj = abfd;
4316 if (info->relocatable)
4319 return create_linkage_sections (htab->elf.dynobj, info);
4322 /* Build a name for an entry in the stub hash table. */
4325 ppc_stub_name (const asection *input_section,
4326 const asection *sym_sec,
4327 const struct ppc_link_hash_entry *h,
4328 const Elf_Internal_Rela *rel)
4333 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4334 offsets from a sym as a branch target? In fact, we could
4335 probably assume the addend is always zero. */
4336 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4340 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4341 stub_name = bfd_malloc (len);
4342 if (stub_name == NULL)
4345 len = sprintf (stub_name, "%08x.%s+%x",
4346 input_section->id & 0xffffffff,
4347 h->elf.root.root.string,
4348 (int) rel->r_addend & 0xffffffff);
4352 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4353 stub_name = bfd_malloc (len);
4354 if (stub_name == NULL)
4357 len = sprintf (stub_name, "%08x.%x:%x+%x",
4358 input_section->id & 0xffffffff,
4359 sym_sec->id & 0xffffffff,
4360 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4361 (int) rel->r_addend & 0xffffffff);
4363 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4364 stub_name[len - 2] = 0;
4368 /* Look up an entry in the stub hash. Stub entries are cached because
4369 creating the stub name takes a bit of time. */
4371 static struct ppc_stub_hash_entry *
4372 ppc_get_stub_entry (const asection *input_section,
4373 const asection *sym_sec,
4374 struct ppc_link_hash_entry *h,
4375 const Elf_Internal_Rela *rel,
4376 struct ppc_link_hash_table *htab)
4378 struct ppc_stub_hash_entry *stub_entry;
4379 const asection *id_sec;
4381 /* If this input section is part of a group of sections sharing one
4382 stub section, then use the id of the first section in the group.
4383 Stub names need to include a section id, as there may well be
4384 more than one stub used to reach say, printf, and we need to
4385 distinguish between them. */
4386 id_sec = htab->stub_group[input_section->id].link_sec;
4388 if (h != NULL && h->u.stub_cache != NULL
4389 && h->u.stub_cache->h == h
4390 && h->u.stub_cache->id_sec == id_sec)
4392 stub_entry = h->u.stub_cache;
4398 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4399 if (stub_name == NULL)
4402 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4403 stub_name, FALSE, FALSE);
4405 h->u.stub_cache = stub_entry;
4413 /* Add a new stub entry to the stub hash. Not all fields of the new
4414 stub entry are initialised. */
4416 static struct ppc_stub_hash_entry *
4417 ppc_add_stub (const char *stub_name,
4419 struct bfd_link_info *info)
4421 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4424 struct ppc_stub_hash_entry *stub_entry;
4426 link_sec = htab->stub_group[section->id].link_sec;
4427 stub_sec = htab->stub_group[section->id].stub_sec;
4428 if (stub_sec == NULL)
4430 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4431 if (stub_sec == NULL)
4437 namelen = strlen (link_sec->name);
4438 len = namelen + sizeof (STUB_SUFFIX);
4439 s_name = bfd_alloc (htab->stub_bfd, len);
4443 memcpy (s_name, link_sec->name, namelen);
4444 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4445 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4446 if (stub_sec == NULL)
4448 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4450 htab->stub_group[section->id].stub_sec = stub_sec;
4453 /* Enter this entry into the linker stub hash table. */
4454 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4456 if (stub_entry == NULL)
4458 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
4459 section->owner, stub_name);
4463 stub_entry->stub_sec = stub_sec;
4464 stub_entry->stub_offset = 0;
4465 stub_entry->id_sec = link_sec;
4469 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4470 not already done. */
4473 create_got_section (bfd *abfd, struct bfd_link_info *info)
4475 asection *got, *relgot;
4477 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4479 if (!is_ppc64_elf (abfd))
4486 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4489 htab->got = bfd_get_linker_section (htab->elf.dynobj, ".got");
4494 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4495 | SEC_LINKER_CREATED);
4497 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4499 || !bfd_set_section_alignment (abfd, got, 3))
4502 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4503 flags | SEC_READONLY);
4505 || ! bfd_set_section_alignment (abfd, relgot, 3))
4508 ppc64_elf_tdata (abfd)->got = got;
4509 ppc64_elf_tdata (abfd)->relgot = relgot;
4513 /* Create the dynamic sections, and set up shortcuts. */
4516 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4518 struct ppc_link_hash_table *htab;
4520 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4523 htab = ppc_hash_table (info);
4528 htab->got = bfd_get_linker_section (dynobj, ".got");
4529 htab->plt = bfd_get_linker_section (dynobj, ".plt");
4530 htab->relplt = bfd_get_linker_section (dynobj, ".rela.plt");
4531 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
4533 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
4535 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4536 || (!info->shared && !htab->relbss))
4542 /* Follow indirect and warning symbol links. */
4544 static inline struct bfd_link_hash_entry *
4545 follow_link (struct bfd_link_hash_entry *h)
4547 while (h->type == bfd_link_hash_indirect
4548 || h->type == bfd_link_hash_warning)
4553 static inline struct elf_link_hash_entry *
4554 elf_follow_link (struct elf_link_hash_entry *h)
4556 return (struct elf_link_hash_entry *) follow_link (&h->root);
4559 static inline struct ppc_link_hash_entry *
4560 ppc_follow_link (struct ppc_link_hash_entry *h)
4562 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4565 /* Merge PLT info on FROM with that on TO. */
4568 move_plt_plist (struct ppc_link_hash_entry *from,
4569 struct ppc_link_hash_entry *to)
4571 if (from->elf.plt.plist != NULL)
4573 if (to->elf.plt.plist != NULL)
4575 struct plt_entry **entp;
4576 struct plt_entry *ent;
4578 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4580 struct plt_entry *dent;
4582 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4583 if (dent->addend == ent->addend)
4585 dent->plt.refcount += ent->plt.refcount;
4592 *entp = to->elf.plt.plist;
4595 to->elf.plt.plist = from->elf.plt.plist;
4596 from->elf.plt.plist = NULL;
4600 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4603 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4604 struct elf_link_hash_entry *dir,
4605 struct elf_link_hash_entry *ind)
4607 struct ppc_link_hash_entry *edir, *eind;
4609 edir = (struct ppc_link_hash_entry *) dir;
4610 eind = (struct ppc_link_hash_entry *) ind;
4612 edir->is_func |= eind->is_func;
4613 edir->is_func_descriptor |= eind->is_func_descriptor;
4614 edir->tls_mask |= eind->tls_mask;
4615 if (eind->oh != NULL)
4616 edir->oh = ppc_follow_link (eind->oh);
4618 /* If called to transfer flags for a weakdef during processing
4619 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4620 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4621 if (!(ELIMINATE_COPY_RELOCS
4622 && eind->elf.root.type != bfd_link_hash_indirect
4623 && edir->elf.dynamic_adjusted))
4624 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4626 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4627 edir->elf.ref_regular |= eind->elf.ref_regular;
4628 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4629 edir->elf.needs_plt |= eind->elf.needs_plt;
4630 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
4632 /* Copy over any dynamic relocs we may have on the indirect sym. */
4633 if (eind->dyn_relocs != NULL)
4635 if (edir->dyn_relocs != NULL)
4637 struct elf_dyn_relocs **pp;
4638 struct elf_dyn_relocs *p;
4640 /* Add reloc counts against the indirect sym to the direct sym
4641 list. Merge any entries against the same section. */
4642 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4644 struct elf_dyn_relocs *q;
4646 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4647 if (q->sec == p->sec)
4649 q->pc_count += p->pc_count;
4650 q->count += p->count;
4657 *pp = edir->dyn_relocs;
4660 edir->dyn_relocs = eind->dyn_relocs;
4661 eind->dyn_relocs = NULL;
4664 /* If we were called to copy over info for a weak sym, that's all.
4665 You might think dyn_relocs need not be copied over; After all,
4666 both syms will be dynamic or both non-dynamic so we're just
4667 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4668 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4669 dyn_relocs in read-only sections, and it does so on what is the
4671 if (eind->elf.root.type != bfd_link_hash_indirect)
4674 /* Copy over got entries that we may have already seen to the
4675 symbol which just became indirect. */
4676 if (eind->elf.got.glist != NULL)
4678 if (edir->elf.got.glist != NULL)
4680 struct got_entry **entp;
4681 struct got_entry *ent;
4683 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4685 struct got_entry *dent;
4687 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4688 if (dent->addend == ent->addend
4689 && dent->owner == ent->owner
4690 && dent->tls_type == ent->tls_type)
4692 dent->got.refcount += ent->got.refcount;
4699 *entp = edir->elf.got.glist;
4702 edir->elf.got.glist = eind->elf.got.glist;
4703 eind->elf.got.glist = NULL;
4706 /* And plt entries. */
4707 move_plt_plist (eind, edir);
4709 if (eind->elf.dynindx != -1)
4711 if (edir->elf.dynindx != -1)
4712 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4713 edir->elf.dynstr_index);
4714 edir->elf.dynindx = eind->elf.dynindx;
4715 edir->elf.dynstr_index = eind->elf.dynstr_index;
4716 eind->elf.dynindx = -1;
4717 eind->elf.dynstr_index = 0;
4721 /* Find the function descriptor hash entry from the given function code
4722 hash entry FH. Link the entries via their OH fields. */
4724 static struct ppc_link_hash_entry *
4725 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4727 struct ppc_link_hash_entry *fdh = fh->oh;
4731 const char *fd_name = fh->elf.root.root.string + 1;
4733 fdh = (struct ppc_link_hash_entry *)
4734 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4738 fdh->is_func_descriptor = 1;
4744 return ppc_follow_link (fdh);
4747 /* Make a fake function descriptor sym for the code sym FH. */
4749 static struct ppc_link_hash_entry *
4750 make_fdh (struct bfd_link_info *info,
4751 struct ppc_link_hash_entry *fh)
4755 struct bfd_link_hash_entry *bh;
4756 struct ppc_link_hash_entry *fdh;
4758 abfd = fh->elf.root.u.undef.abfd;
4759 newsym = bfd_make_empty_symbol (abfd);
4760 newsym->name = fh->elf.root.root.string + 1;
4761 newsym->section = bfd_und_section_ptr;
4763 newsym->flags = BSF_WEAK;
4766 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4767 newsym->flags, newsym->section,
4768 newsym->value, NULL, FALSE, FALSE,
4772 fdh = (struct ppc_link_hash_entry *) bh;
4773 fdh->elf.non_elf = 0;
4775 fdh->is_func_descriptor = 1;
4782 /* Fix function descriptor symbols defined in .opd sections to be
4786 ppc64_elf_add_symbol_hook (bfd *ibfd,
4787 struct bfd_link_info *info,
4788 Elf_Internal_Sym *isym,
4790 flagword *flags ATTRIBUTE_UNUSED,
4792 bfd_vma *value ATTRIBUTE_UNUSED)
4794 if ((ibfd->flags & DYNAMIC) == 0
4795 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4796 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4798 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4800 if ((ibfd->flags & DYNAMIC) == 0)
4801 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4803 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4805 else if (*sec != NULL
4806 && strcmp ((*sec)->name, ".opd") == 0)
4807 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4809 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4811 if (abiversion (ibfd) == 0)
4812 set_abiversion (ibfd, 2);
4813 else if (abiversion (ibfd) == 1)
4815 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4816 " for ABI version 1\n"), name);
4817 bfd_set_error (bfd_error_bad_value);
4825 /* Merge non-visibility st_other attributes: local entry point. */
4828 ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4829 const Elf_Internal_Sym *isym,
4830 bfd_boolean definition,
4831 bfd_boolean dynamic)
4833 if (definition && !dynamic)
4834 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4835 | ELF_ST_VISIBILITY (h->other));
4838 /* This function makes an old ABI object reference to ".bar" cause the
4839 inclusion of a new ABI object archive that defines "bar".
4840 NAME is a symbol defined in an archive. Return a symbol in the hash
4841 table that might be satisfied by the archive symbols. */
4843 static struct elf_link_hash_entry *
4844 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4845 struct bfd_link_info *info,
4848 struct elf_link_hash_entry *h;
4852 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4854 /* Don't return this sym if it is a fake function descriptor
4855 created by add_symbol_adjust. */
4856 && !(h->root.type == bfd_link_hash_undefweak
4857 && ((struct ppc_link_hash_entry *) h)->fake))
4863 len = strlen (name);
4864 dot_name = bfd_alloc (abfd, len + 2);
4865 if (dot_name == NULL)
4866 return (struct elf_link_hash_entry *) 0 - 1;
4868 memcpy (dot_name + 1, name, len + 1);
4869 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4870 bfd_release (abfd, dot_name);
4874 /* This function satisfies all old ABI object references to ".bar" if a
4875 new ABI object defines "bar". Well, at least, undefined dot symbols
4876 are made weak. This stops later archive searches from including an
4877 object if we already have a function descriptor definition. It also
4878 prevents the linker complaining about undefined symbols.
4879 We also check and correct mismatched symbol visibility here. The
4880 most restrictive visibility of the function descriptor and the
4881 function entry symbol is used. */
4884 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4886 struct ppc_link_hash_table *htab;
4887 struct ppc_link_hash_entry *fdh;
4889 if (eh->elf.root.type == bfd_link_hash_indirect)
4892 if (eh->elf.root.type == bfd_link_hash_warning)
4893 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4895 if (eh->elf.root.root.string[0] != '.')
4898 htab = ppc_hash_table (info);
4902 fdh = lookup_fdh (eh, htab);
4905 if (!info->relocatable
4906 && (eh->elf.root.type == bfd_link_hash_undefined
4907 || eh->elf.root.type == bfd_link_hash_undefweak)
4908 && eh->elf.ref_regular)
4910 /* Make an undefweak function descriptor sym, which is enough to
4911 pull in an --as-needed shared lib, but won't cause link
4912 errors. Archives are handled elsewhere. */
4913 fdh = make_fdh (info, eh);
4916 fdh->elf.ref_regular = 1;
4921 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4922 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4923 if (entry_vis < descr_vis)
4924 fdh->elf.other += entry_vis - descr_vis;
4925 else if (entry_vis > descr_vis)
4926 eh->elf.other += descr_vis - entry_vis;
4928 if ((fdh->elf.root.type == bfd_link_hash_defined
4929 || fdh->elf.root.type == bfd_link_hash_defweak)
4930 && eh->elf.root.type == bfd_link_hash_undefined)
4932 eh->elf.root.type = bfd_link_hash_undefweak;
4933 eh->was_undefined = 1;
4934 htab->twiddled_syms = 1;
4941 /* Process list of dot-symbols we made in link_hash_newfunc. */
4944 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4946 struct ppc_link_hash_table *htab;
4947 struct ppc_link_hash_entry **p, *eh;
4949 if (!is_ppc64_elf (info->output_bfd))
4951 htab = ppc_hash_table (info);
4955 if (is_ppc64_elf (ibfd))
4957 p = &htab->dot_syms;
4958 while ((eh = *p) != NULL)
4961 if (&eh->elf == htab->elf.hgot)
4963 else if (htab->elf.hgot == NULL
4964 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
4965 htab->elf.hgot = &eh->elf;
4966 else if (!add_symbol_adjust (eh, info))
4968 p = &eh->u.next_dot_sym;
4972 /* Clear the list for non-ppc64 input files. */
4973 p = &htab->dot_syms;
4974 while ((eh = *p) != NULL)
4977 p = &eh->u.next_dot_sym;
4980 /* We need to fix the undefs list for any syms we have twiddled to
4982 if (htab->twiddled_syms)
4984 bfd_link_repair_undef_list (&htab->elf.root);
4985 htab->twiddled_syms = 0;
4990 /* Undo hash table changes when an --as-needed input file is determined
4991 not to be needed. */
4994 ppc64_elf_notice_as_needed (bfd *ibfd,
4995 struct bfd_link_info *info,
4996 enum notice_asneeded_action act)
4998 if (act == notice_not_needed)
5000 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5005 htab->dot_syms = NULL;
5007 return _bfd_elf_notice_as_needed (ibfd, info, act);
5010 /* If --just-symbols against a final linked binary, then assume we need
5011 toc adjusting stubs when calling functions defined there. */
5014 ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5016 if ((sec->flags & SEC_CODE) != 0
5017 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5018 && is_ppc64_elf (sec->owner))
5020 asection *got = bfd_get_section_by_name (sec->owner, ".got");
5022 && got->size >= elf_backend_got_header_size
5023 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
5024 sec->has_toc_reloc = 1;
5026 _bfd_elf_link_just_syms (sec, info);
5029 static struct plt_entry **
5030 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5031 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
5033 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
5034 struct plt_entry **local_plt;
5035 unsigned char *local_got_tls_masks;
5037 if (local_got_ents == NULL)
5039 bfd_size_type size = symtab_hdr->sh_info;
5041 size *= (sizeof (*local_got_ents)
5042 + sizeof (*local_plt)
5043 + sizeof (*local_got_tls_masks));
5044 local_got_ents = bfd_zalloc (abfd, size);
5045 if (local_got_ents == NULL)
5047 elf_local_got_ents (abfd) = local_got_ents;
5050 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
5052 struct got_entry *ent;
5054 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
5055 if (ent->addend == r_addend
5056 && ent->owner == abfd
5057 && ent->tls_type == tls_type)
5061 bfd_size_type amt = sizeof (*ent);
5062 ent = bfd_alloc (abfd, amt);
5065 ent->next = local_got_ents[r_symndx];
5066 ent->addend = r_addend;
5068 ent->tls_type = tls_type;
5069 ent->is_indirect = FALSE;
5070 ent->got.refcount = 0;
5071 local_got_ents[r_symndx] = ent;
5073 ent->got.refcount += 1;
5076 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
5077 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
5078 local_got_tls_masks[r_symndx] |= tls_type;
5080 return local_plt + r_symndx;
5084 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
5086 struct plt_entry *ent;
5088 for (ent = *plist; ent != NULL; ent = ent->next)
5089 if (ent->addend == addend)
5093 bfd_size_type amt = sizeof (*ent);
5094 ent = bfd_alloc (abfd, amt);
5098 ent->addend = addend;
5099 ent->plt.refcount = 0;
5102 ent->plt.refcount += 1;
5107 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5109 return (r_type == R_PPC64_REL24
5110 || r_type == R_PPC64_REL14
5111 || r_type == R_PPC64_REL14_BRTAKEN
5112 || r_type == R_PPC64_REL14_BRNTAKEN
5113 || r_type == R_PPC64_ADDR24
5114 || r_type == R_PPC64_ADDR14
5115 || r_type == R_PPC64_ADDR14_BRTAKEN
5116 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5119 /* Look through the relocs for a section during the first phase, and
5120 calculate needed space in the global offset table, procedure
5121 linkage table, and dynamic reloc sections. */
5124 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5125 asection *sec, const Elf_Internal_Rela *relocs)
5127 struct ppc_link_hash_table *htab;
5128 Elf_Internal_Shdr *symtab_hdr;
5129 struct elf_link_hash_entry **sym_hashes;
5130 const Elf_Internal_Rela *rel;
5131 const Elf_Internal_Rela *rel_end;
5133 asection **opd_sym_map;
5134 struct elf_link_hash_entry *tga, *dottga;
5136 if (info->relocatable)
5139 /* Don't do anything special with non-loaded, non-alloced sections.
5140 In particular, any relocs in such sections should not affect GOT
5141 and PLT reference counting (ie. we don't allow them to create GOT
5142 or PLT entries), there's no possibility or desire to optimize TLS
5143 relocs, and there's not much point in propagating relocs to shared
5144 libs that the dynamic linker won't relocate. */
5145 if ((sec->flags & SEC_ALLOC) == 0)
5148 BFD_ASSERT (is_ppc64_elf (abfd));
5150 htab = ppc_hash_table (info);
5154 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5155 FALSE, FALSE, TRUE);
5156 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5157 FALSE, FALSE, TRUE);
5158 symtab_hdr = &elf_symtab_hdr (abfd);
5159 sym_hashes = elf_sym_hashes (abfd);
5162 if (strcmp (sec->name, ".opd") == 0)
5164 /* Garbage collection needs some extra help with .opd sections.
5165 We don't want to necessarily keep everything referenced by
5166 relocs in .opd, as that would keep all functions. Instead,
5167 if we reference an .opd symbol (a function descriptor), we
5168 want to keep the function code symbol's section. This is
5169 easy for global symbols, but for local syms we need to keep
5170 information about the associated function section. */
5173 if (abiversion (abfd) == 0)
5174 set_abiversion (abfd, 1);
5175 else if (abiversion (abfd) == 2)
5177 info->callbacks->einfo (_("%P: .opd not allowed in ABI version %d\n"),
5179 bfd_set_error (bfd_error_bad_value);
5182 amt = sec->size * sizeof (*opd_sym_map) / 8;
5183 opd_sym_map = bfd_zalloc (abfd, amt);
5184 if (opd_sym_map == NULL)
5186 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
5187 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
5188 ppc64_elf_section_data (sec)->sec_type = sec_opd;
5191 rel_end = relocs + sec->reloc_count;
5192 for (rel = relocs; rel < rel_end; rel++)
5194 unsigned long r_symndx;
5195 struct elf_link_hash_entry *h;
5196 enum elf_ppc64_reloc_type r_type;
5198 struct _ppc64_elf_section_data *ppc64_sec;
5199 struct plt_entry **ifunc;
5201 r_symndx = ELF64_R_SYM (rel->r_info);
5202 if (r_symndx < symtab_hdr->sh_info)
5206 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5207 h = elf_follow_link (h);
5209 /* PR15323, ref flags aren't set for references in the same
5211 h->root.non_ir_ref = 1;
5213 if (h == htab->elf.hgot)
5214 sec->has_toc_reloc = 1;
5221 if (h->type == STT_GNU_IFUNC)
5224 ifunc = &h->plt.plist;
5229 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5234 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5236 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5237 rel->r_addend, PLT_IFUNC);
5242 r_type = ELF64_R_TYPE (rel->r_info);
5243 if (is_branch_reloc (r_type))
5245 if (h != NULL && (h == tga || h == dottga))
5248 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5249 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5250 /* We have a new-style __tls_get_addr call with a marker
5254 /* Mark this section as having an old-style call. */
5255 sec->has_tls_get_addr_call = 1;
5258 /* STT_GNU_IFUNC symbols must have a PLT entry. */
5260 && !update_plt_info (abfd, ifunc, rel->r_addend))
5268 /* These special tls relocs tie a call to __tls_get_addr with
5269 its parameter symbol. */
5272 case R_PPC64_GOT_TLSLD16:
5273 case R_PPC64_GOT_TLSLD16_LO:
5274 case R_PPC64_GOT_TLSLD16_HI:
5275 case R_PPC64_GOT_TLSLD16_HA:
5276 tls_type = TLS_TLS | TLS_LD;
5279 case R_PPC64_GOT_TLSGD16:
5280 case R_PPC64_GOT_TLSGD16_LO:
5281 case R_PPC64_GOT_TLSGD16_HI:
5282 case R_PPC64_GOT_TLSGD16_HA:
5283 tls_type = TLS_TLS | TLS_GD;
5286 case R_PPC64_GOT_TPREL16_DS:
5287 case R_PPC64_GOT_TPREL16_LO_DS:
5288 case R_PPC64_GOT_TPREL16_HI:
5289 case R_PPC64_GOT_TPREL16_HA:
5290 if (!info->executable)
5291 info->flags |= DF_STATIC_TLS;
5292 tls_type = TLS_TLS | TLS_TPREL;
5295 case R_PPC64_GOT_DTPREL16_DS:
5296 case R_PPC64_GOT_DTPREL16_LO_DS:
5297 case R_PPC64_GOT_DTPREL16_HI:
5298 case R_PPC64_GOT_DTPREL16_HA:
5299 tls_type = TLS_TLS | TLS_DTPREL;
5301 sec->has_tls_reloc = 1;
5305 case R_PPC64_GOT16_DS:
5306 case R_PPC64_GOT16_HA:
5307 case R_PPC64_GOT16_HI:
5308 case R_PPC64_GOT16_LO:
5309 case R_PPC64_GOT16_LO_DS:
5310 /* This symbol requires a global offset table entry. */
5311 sec->has_toc_reloc = 1;
5312 if (r_type == R_PPC64_GOT_TLSLD16
5313 || r_type == R_PPC64_GOT_TLSGD16
5314 || r_type == R_PPC64_GOT_TPREL16_DS
5315 || r_type == R_PPC64_GOT_DTPREL16_DS
5316 || r_type == R_PPC64_GOT16
5317 || r_type == R_PPC64_GOT16_DS)
5319 htab->do_multi_toc = 1;
5320 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5323 if (ppc64_elf_tdata (abfd)->got == NULL
5324 && !create_got_section (abfd, info))
5329 struct ppc_link_hash_entry *eh;
5330 struct got_entry *ent;
5332 eh = (struct ppc_link_hash_entry *) h;
5333 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5334 if (ent->addend == rel->r_addend
5335 && ent->owner == abfd
5336 && ent->tls_type == tls_type)
5340 bfd_size_type amt = sizeof (*ent);
5341 ent = bfd_alloc (abfd, amt);
5344 ent->next = eh->elf.got.glist;
5345 ent->addend = rel->r_addend;
5347 ent->tls_type = tls_type;
5348 ent->is_indirect = FALSE;
5349 ent->got.refcount = 0;
5350 eh->elf.got.glist = ent;
5352 ent->got.refcount += 1;
5353 eh->tls_mask |= tls_type;
5356 /* This is a global offset table entry for a local symbol. */
5357 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5358 rel->r_addend, tls_type))
5361 /* We may also need a plt entry if the symbol turns out to be
5363 if (h != NULL && !info->shared && abiversion (abfd) == 2)
5365 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5370 case R_PPC64_PLT16_HA:
5371 case R_PPC64_PLT16_HI:
5372 case R_PPC64_PLT16_LO:
5375 /* This symbol requires a procedure linkage table entry. We
5376 actually build the entry in adjust_dynamic_symbol,
5377 because this might be a case of linking PIC code without
5378 linking in any dynamic objects, in which case we don't
5379 need to generate a procedure linkage table after all. */
5382 /* It does not make sense to have a procedure linkage
5383 table entry for a local symbol. */
5384 bfd_set_error (bfd_error_bad_value);
5389 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5392 if (h->root.root.string[0] == '.'
5393 && h->root.root.string[1] != '\0')
5394 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5398 /* The following relocations don't need to propagate the
5399 relocation if linking a shared object since they are
5400 section relative. */
5401 case R_PPC64_SECTOFF:
5402 case R_PPC64_SECTOFF_LO:
5403 case R_PPC64_SECTOFF_HI:
5404 case R_PPC64_SECTOFF_HA:
5405 case R_PPC64_SECTOFF_DS:
5406 case R_PPC64_SECTOFF_LO_DS:
5407 case R_PPC64_DTPREL16:
5408 case R_PPC64_DTPREL16_LO:
5409 case R_PPC64_DTPREL16_HI:
5410 case R_PPC64_DTPREL16_HA:
5411 case R_PPC64_DTPREL16_DS:
5412 case R_PPC64_DTPREL16_LO_DS:
5413 case R_PPC64_DTPREL16_HIGH:
5414 case R_PPC64_DTPREL16_HIGHA:
5415 case R_PPC64_DTPREL16_HIGHER:
5416 case R_PPC64_DTPREL16_HIGHERA:
5417 case R_PPC64_DTPREL16_HIGHEST:
5418 case R_PPC64_DTPREL16_HIGHESTA:
5423 case R_PPC64_REL16_LO:
5424 case R_PPC64_REL16_HI:
5425 case R_PPC64_REL16_HA:
5429 case R_PPC64_TOC16_DS:
5430 htab->do_multi_toc = 1;
5431 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
5432 case R_PPC64_TOC16_LO:
5433 case R_PPC64_TOC16_HI:
5434 case R_PPC64_TOC16_HA:
5435 case R_PPC64_TOC16_LO_DS:
5436 sec->has_toc_reloc = 1;
5439 /* This relocation describes the C++ object vtable hierarchy.
5440 Reconstruct it for later use during GC. */
5441 case R_PPC64_GNU_VTINHERIT:
5442 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5446 /* This relocation describes which C++ vtable entries are actually
5447 used. Record for later use during GC. */
5448 case R_PPC64_GNU_VTENTRY:
5449 BFD_ASSERT (h != NULL);
5451 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5456 case R_PPC64_REL14_BRTAKEN:
5457 case R_PPC64_REL14_BRNTAKEN:
5459 asection *dest = NULL;
5461 /* Heuristic: If jumping outside our section, chances are
5462 we are going to need a stub. */
5465 /* If the sym is weak it may be overridden later, so
5466 don't assume we know where a weak sym lives. */
5467 if (h->root.type == bfd_link_hash_defined)
5468 dest = h->root.u.def.section;
5472 Elf_Internal_Sym *isym;
5474 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5479 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5483 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5488 if (h != NULL && ifunc == NULL)
5490 /* We may need a .plt entry if the function this reloc
5491 refers to is in a shared lib. */
5492 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5495 if (h->root.root.string[0] == '.'
5496 && h->root.root.string[1] != '\0')
5497 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5498 if (h == tga || h == dottga)
5499 sec->has_tls_reloc = 1;
5503 case R_PPC64_TPREL64:
5504 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5505 if (!info->executable)
5506 info->flags |= DF_STATIC_TLS;
5509 case R_PPC64_DTPMOD64:
5510 if (rel + 1 < rel_end
5511 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5512 && rel[1].r_offset == rel->r_offset + 8)
5513 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5515 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5518 case R_PPC64_DTPREL64:
5519 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5521 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5522 && rel[-1].r_offset == rel->r_offset - 8)
5523 /* This is the second reloc of a dtpmod, dtprel pair.
5524 Don't mark with TLS_DTPREL. */
5528 sec->has_tls_reloc = 1;
5531 struct ppc_link_hash_entry *eh;
5532 eh = (struct ppc_link_hash_entry *) h;
5533 eh->tls_mask |= tls_type;
5536 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5537 rel->r_addend, tls_type))
5540 ppc64_sec = ppc64_elf_section_data (sec);
5541 if (ppc64_sec->sec_type != sec_toc)
5545 /* One extra to simplify get_tls_mask. */
5546 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5547 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5548 if (ppc64_sec->u.toc.symndx == NULL)
5550 amt = sec->size * sizeof (bfd_vma) / 8;
5551 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5552 if (ppc64_sec->u.toc.add == NULL)
5554 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5555 ppc64_sec->sec_type = sec_toc;
5557 BFD_ASSERT (rel->r_offset % 8 == 0);
5558 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5559 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5561 /* Mark the second slot of a GD or LD entry.
5562 -1 to indicate GD and -2 to indicate LD. */
5563 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5564 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5565 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5566 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5569 case R_PPC64_TPREL16:
5570 case R_PPC64_TPREL16_LO:
5571 case R_PPC64_TPREL16_HI:
5572 case R_PPC64_TPREL16_HA:
5573 case R_PPC64_TPREL16_DS:
5574 case R_PPC64_TPREL16_LO_DS:
5575 case R_PPC64_TPREL16_HIGH:
5576 case R_PPC64_TPREL16_HIGHA:
5577 case R_PPC64_TPREL16_HIGHER:
5578 case R_PPC64_TPREL16_HIGHERA:
5579 case R_PPC64_TPREL16_HIGHEST:
5580 case R_PPC64_TPREL16_HIGHESTA:
5583 if (!info->executable)
5584 info->flags |= DF_STATIC_TLS;
5589 case R_PPC64_ADDR64:
5590 if (opd_sym_map != NULL
5591 && rel + 1 < rel_end
5592 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5596 if (h->root.root.string[0] == '.'
5597 && h->root.root.string[1] != 0
5598 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5601 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5606 Elf_Internal_Sym *isym;
5608 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5613 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5614 if (s != NULL && s != sec)
5615 opd_sym_map[rel->r_offset / 8] = s;
5620 case R_PPC64_ADDR16:
5621 case R_PPC64_ADDR16_DS:
5622 case R_PPC64_ADDR16_HA:
5623 case R_PPC64_ADDR16_HI:
5624 case R_PPC64_ADDR16_HIGH:
5625 case R_PPC64_ADDR16_HIGHA:
5626 case R_PPC64_ADDR16_HIGHER:
5627 case R_PPC64_ADDR16_HIGHERA:
5628 case R_PPC64_ADDR16_HIGHEST:
5629 case R_PPC64_ADDR16_HIGHESTA:
5630 case R_PPC64_ADDR16_LO:
5631 case R_PPC64_ADDR16_LO_DS:
5632 if (h != NULL && !info->shared && abiversion (abfd) == 2
5633 && rel->r_addend == 0)
5635 /* We may need a .plt entry if this reloc refers to a
5636 function in a shared lib. */
5637 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5639 h->pointer_equality_needed = 1;
5646 case R_PPC64_ADDR14:
5647 case R_PPC64_ADDR14_BRNTAKEN:
5648 case R_PPC64_ADDR14_BRTAKEN:
5649 case R_PPC64_ADDR24:
5650 case R_PPC64_ADDR32:
5651 case R_PPC64_UADDR16:
5652 case R_PPC64_UADDR32:
5653 case R_PPC64_UADDR64:
5655 if (h != NULL && !info->shared)
5656 /* We may need a copy reloc. */
5659 /* Don't propagate .opd relocs. */
5660 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5663 /* If we are creating a shared library, and this is a reloc
5664 against a global symbol, or a non PC relative reloc
5665 against a local symbol, then we need to copy the reloc
5666 into the shared library. However, if we are linking with
5667 -Bsymbolic, we do not need to copy a reloc against a
5668 global symbol which is defined in an object we are
5669 including in the link (i.e., DEF_REGULAR is set). At
5670 this point we have not seen all the input files, so it is
5671 possible that DEF_REGULAR is not set now but will be set
5672 later (it is never cleared). In case of a weak definition,
5673 DEF_REGULAR may be cleared later by a strong definition in
5674 a shared library. We account for that possibility below by
5675 storing information in the dyn_relocs field of the hash
5676 table entry. A similar situation occurs when creating
5677 shared libraries and symbol visibility changes render the
5680 If on the other hand, we are creating an executable, we
5681 may need to keep relocations for symbols satisfied by a
5682 dynamic library if we manage to avoid copy relocs for the
5686 && (must_be_dyn_reloc (info, r_type)
5688 && (!SYMBOLIC_BIND (info, h)
5689 || h->root.type == bfd_link_hash_defweak
5690 || !h->def_regular))))
5691 || (ELIMINATE_COPY_RELOCS
5694 && (h->root.type == bfd_link_hash_defweak
5695 || !h->def_regular))
5699 /* We must copy these reloc types into the output file.
5700 Create a reloc section in dynobj and make room for
5704 sreloc = _bfd_elf_make_dynamic_reloc_section
5705 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5711 /* If this is a global symbol, we count the number of
5712 relocations we need for this symbol. */
5715 struct elf_dyn_relocs *p;
5716 struct elf_dyn_relocs **head;
5718 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5720 if (p == NULL || p->sec != sec)
5722 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5732 if (!must_be_dyn_reloc (info, r_type))
5737 /* Track dynamic relocs needed for local syms too.
5738 We really need local syms available to do this
5740 struct ppc_dyn_relocs *p;
5741 struct ppc_dyn_relocs **head;
5742 bfd_boolean is_ifunc;
5745 Elf_Internal_Sym *isym;
5747 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5752 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5756 vpp = &elf_section_data (s)->local_dynrel;
5757 head = (struct ppc_dyn_relocs **) vpp;
5758 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5760 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5762 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5764 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5770 p->ifunc = is_ifunc;
5786 /* Merge backend specific data from an object file to the output
5787 object file when linking. */
5790 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5792 unsigned long iflags, oflags;
5794 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5797 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5800 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5803 iflags = elf_elfheader (ibfd)->e_flags;
5804 oflags = elf_elfheader (obfd)->e_flags;
5806 if (!elf_flags_init (obfd) || oflags == 0)
5808 elf_flags_init (obfd) = TRUE;
5809 elf_elfheader (obfd)->e_flags = iflags;
5811 else if (iflags == oflags || iflags == 0)
5813 else if (iflags & ~EF_PPC64_ABI)
5815 (*_bfd_error_handler)
5816 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5817 bfd_set_error (bfd_error_bad_value);
5822 (*_bfd_error_handler)
5823 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5824 ibfd, iflags, oflags);
5825 bfd_set_error (bfd_error_bad_value);
5829 /* Merge Tag_compatibility attributes and any common GNU ones. */
5830 _bfd_elf_merge_object_attributes (ibfd, obfd);
5836 ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5838 /* Print normal ELF private data. */
5839 _bfd_elf_print_private_bfd_data (abfd, ptr);
5841 if (elf_elfheader (abfd)->e_flags != 0)
5845 /* xgettext:c-format */
5846 fprintf (file, _("private flags = 0x%lx:"),
5847 elf_elfheader (abfd)->e_flags);
5849 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5850 fprintf (file, _(" [abiv%ld]"),
5851 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5858 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5859 of the code entry point, and its section. */
5862 opd_entry_value (asection *opd_sec,
5864 asection **code_sec,
5866 bfd_boolean in_code_sec)
5868 bfd *opd_bfd = opd_sec->owner;
5869 Elf_Internal_Rela *relocs;
5870 Elf_Internal_Rela *lo, *hi, *look;
5873 /* No relocs implies we are linking a --just-symbols object, or looking
5874 at a final linked executable with addr2line or somesuch. */
5875 if (opd_sec->reloc_count == 0)
5877 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
5879 if (contents == NULL)
5881 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5882 return (bfd_vma) -1;
5883 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5886 val = bfd_get_64 (opd_bfd, contents + offset);
5887 if (code_sec != NULL)
5889 asection *sec, *likely = NULL;
5895 && val < sec->vma + sec->size)
5901 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5903 && (sec->flags & SEC_LOAD) != 0
5904 && (sec->flags & SEC_ALLOC) != 0)
5909 if (code_off != NULL)
5910 *code_off = val - likely->vma;
5916 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5918 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
5920 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5922 /* Go find the opd reloc at the sym address. */
5924 BFD_ASSERT (lo != NULL);
5925 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5929 look = lo + (hi - lo) / 2;
5930 if (look->r_offset < offset)
5932 else if (look->r_offset > offset)
5936 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5938 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5939 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5941 unsigned long symndx = ELF64_R_SYM (look->r_info);
5944 if (symndx < symtab_hdr->sh_info
5945 || elf_sym_hashes (opd_bfd) == NULL)
5947 Elf_Internal_Sym *sym;
5949 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5952 size_t symcnt = symtab_hdr->sh_info;
5953 if (elf_sym_hashes (opd_bfd) == NULL)
5954 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5955 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
5956 0, NULL, NULL, NULL);
5959 symtab_hdr->contents = (bfd_byte *) sym;
5963 val = sym->st_value;
5964 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5965 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5969 struct elf_link_hash_entry **sym_hashes;
5970 struct elf_link_hash_entry *rh;
5972 sym_hashes = elf_sym_hashes (opd_bfd);
5973 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5976 rh = elf_follow_link (rh);
5977 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5978 || rh->root.type == bfd_link_hash_defweak);
5979 val = rh->root.u.def.value;
5980 sec = rh->root.u.def.section;
5984 /* Handle the odd case where we can be called
5985 during bfd_elf_link_add_symbols before the
5986 symbol hashes have been fully populated. */
5987 Elf_Internal_Sym *sym;
5989 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
5990 symndx, NULL, NULL, NULL);
5994 val = sym->st_value;
5995 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5999 val += look->r_addend;
6000 if (code_off != NULL)
6002 if (code_sec != NULL)
6004 if (in_code_sec && *code_sec != sec)
6009 if (sec != NULL && sec->output_section != NULL)
6010 val += sec->output_section->vma + sec->output_offset;
6019 /* If the ELF symbol SYM might be a function in SEC, return the
6020 function size and set *CODE_OFF to the function's entry point,
6021 otherwise return zero. */
6023 static bfd_size_type
6024 ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6029 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6030 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6034 if (!(sym->flags & BSF_SYNTHETIC))
6035 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6037 if (strcmp (sym->section->name, ".opd") == 0)
6039 if (opd_entry_value (sym->section, sym->value,
6040 &sec, code_off, TRUE) == (bfd_vma) -1)
6042 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6043 symbol. This size has nothing to do with the code size of the
6044 function, which is what we're supposed to return, but the
6045 code size isn't available without looking up the dot-sym.
6046 However, doing that would be a waste of time particularly
6047 since elf_find_function will look at the dot-sym anyway.
6048 Now, elf_find_function will keep the largest size of any
6049 function sym found at the code address of interest, so return
6050 1 here to avoid it incorrectly caching a larger function size
6051 for a small function. This does mean we return the wrong
6052 size for a new-ABI function of size 24, but all that does is
6053 disable caching for such functions. */
6059 if (sym->section != sec)
6061 *code_off = sym->value;
6068 /* Return true if symbol is defined in a regular object file. */
6071 is_static_defined (struct elf_link_hash_entry *h)
6073 return ((h->root.type == bfd_link_hash_defined
6074 || h->root.type == bfd_link_hash_defweak)
6075 && h->root.u.def.section != NULL
6076 && h->root.u.def.section->output_section != NULL);
6079 /* If FDH is a function descriptor symbol, return the associated code
6080 entry symbol if it is defined. Return NULL otherwise. */
6082 static struct ppc_link_hash_entry *
6083 defined_code_entry (struct ppc_link_hash_entry *fdh)
6085 if (fdh->is_func_descriptor)
6087 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6088 if (fh->elf.root.type == bfd_link_hash_defined
6089 || fh->elf.root.type == bfd_link_hash_defweak)
6095 /* If FH is a function code entry symbol, return the associated
6096 function descriptor symbol if it is defined. Return NULL otherwise. */
6098 static struct ppc_link_hash_entry *
6099 defined_func_desc (struct ppc_link_hash_entry *fh)
6102 && fh->oh->is_func_descriptor)
6104 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6105 if (fdh->elf.root.type == bfd_link_hash_defined
6106 || fdh->elf.root.type == bfd_link_hash_defweak)
6112 /* Mark all our entry sym sections, both opd and code section. */
6115 ppc64_elf_gc_keep (struct bfd_link_info *info)
6117 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6118 struct bfd_sym_chain *sym;
6123 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6125 struct ppc_link_hash_entry *eh, *fh;
6128 eh = (struct ppc_link_hash_entry *)
6129 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
6132 if (eh->elf.root.type != bfd_link_hash_defined
6133 && eh->elf.root.type != bfd_link_hash_defweak)
6136 fh = defined_code_entry (eh);
6139 sec = fh->elf.root.u.def.section;
6140 sec->flags |= SEC_KEEP;
6142 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6143 && opd_entry_value (eh->elf.root.u.def.section,
6144 eh->elf.root.u.def.value,
6145 &sec, NULL, FALSE) != (bfd_vma) -1)
6146 sec->flags |= SEC_KEEP;
6148 sec = eh->elf.root.u.def.section;
6149 sec->flags |= SEC_KEEP;
6153 /* Mark sections containing dynamically referenced symbols. When
6154 building shared libraries, we must assume that any visible symbol is
6158 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6160 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6161 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
6162 struct ppc_link_hash_entry *fdh;
6164 /* Dynamic linking info is on the func descriptor sym. */
6165 fdh = defined_func_desc (eh);
6169 if ((eh->elf.root.type == bfd_link_hash_defined
6170 || eh->elf.root.type == bfd_link_hash_defweak)
6171 && (eh->elf.ref_dynamic
6172 || (!info->executable
6173 && eh->elf.def_regular
6174 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
6175 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
6176 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6177 || !bfd_hide_sym_by_version (info->version_info,
6178 eh->elf.root.root.string)))))
6181 struct ppc_link_hash_entry *fh;
6183 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6185 /* Function descriptor syms cause the associated
6186 function code sym section to be marked. */
6187 fh = defined_code_entry (eh);
6190 code_sec = fh->elf.root.u.def.section;
6191 code_sec->flags |= SEC_KEEP;
6193 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6194 && opd_entry_value (eh->elf.root.u.def.section,
6195 eh->elf.root.u.def.value,
6196 &code_sec, NULL, FALSE) != (bfd_vma) -1)
6197 code_sec->flags |= SEC_KEEP;
6203 /* Return the section that should be marked against GC for a given
6207 ppc64_elf_gc_mark_hook (asection *sec,
6208 struct bfd_link_info *info,
6209 Elf_Internal_Rela *rel,
6210 struct elf_link_hash_entry *h,
6211 Elf_Internal_Sym *sym)
6215 /* Syms return NULL if we're marking .opd, so we avoid marking all
6216 function sections, as all functions are referenced in .opd. */
6218 if (get_opd_info (sec) != NULL)
6223 enum elf_ppc64_reloc_type r_type;
6224 struct ppc_link_hash_entry *eh, *fh, *fdh;
6226 r_type = ELF64_R_TYPE (rel->r_info);
6229 case R_PPC64_GNU_VTINHERIT:
6230 case R_PPC64_GNU_VTENTRY:
6234 switch (h->root.type)
6236 case bfd_link_hash_defined:
6237 case bfd_link_hash_defweak:
6238 eh = (struct ppc_link_hash_entry *) h;
6239 fdh = defined_func_desc (eh);
6243 /* Function descriptor syms cause the associated
6244 function code sym section to be marked. */
6245 fh = defined_code_entry (eh);
6248 /* They also mark their opd section. */
6249 eh->elf.root.u.def.section->gc_mark = 1;
6251 rsec = fh->elf.root.u.def.section;
6253 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6254 && opd_entry_value (eh->elf.root.u.def.section,
6255 eh->elf.root.u.def.value,
6256 &rsec, NULL, FALSE) != (bfd_vma) -1)
6257 eh->elf.root.u.def.section->gc_mark = 1;
6259 rsec = h->root.u.def.section;
6262 case bfd_link_hash_common:
6263 rsec = h->root.u.c.p->section;
6267 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6273 struct _opd_sec_data *opd;
6275 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
6276 opd = get_opd_info (rsec);
6277 if (opd != NULL && opd->func_sec != NULL)
6281 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
6288 /* Update the .got, .plt. and dynamic reloc reference counts for the
6289 section being removed. */
6292 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6293 asection *sec, const Elf_Internal_Rela *relocs)
6295 struct ppc_link_hash_table *htab;
6296 Elf_Internal_Shdr *symtab_hdr;
6297 struct elf_link_hash_entry **sym_hashes;
6298 struct got_entry **local_got_ents;
6299 const Elf_Internal_Rela *rel, *relend;
6301 if (info->relocatable)
6304 if ((sec->flags & SEC_ALLOC) == 0)
6307 elf_section_data (sec)->local_dynrel = NULL;
6309 htab = ppc_hash_table (info);
6313 symtab_hdr = &elf_symtab_hdr (abfd);
6314 sym_hashes = elf_sym_hashes (abfd);
6315 local_got_ents = elf_local_got_ents (abfd);
6317 relend = relocs + sec->reloc_count;
6318 for (rel = relocs; rel < relend; rel++)
6320 unsigned long r_symndx;
6321 enum elf_ppc64_reloc_type r_type;
6322 struct elf_link_hash_entry *h = NULL;
6323 unsigned char tls_type = 0;
6325 r_symndx = ELF64_R_SYM (rel->r_info);
6326 r_type = ELF64_R_TYPE (rel->r_info);
6327 if (r_symndx >= symtab_hdr->sh_info)
6329 struct ppc_link_hash_entry *eh;
6330 struct elf_dyn_relocs **pp;
6331 struct elf_dyn_relocs *p;
6333 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6334 h = elf_follow_link (h);
6335 eh = (struct ppc_link_hash_entry *) h;
6337 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6340 /* Everything must go for SEC. */
6346 if (is_branch_reloc (r_type))
6348 struct plt_entry **ifunc = NULL;
6351 if (h->type == STT_GNU_IFUNC)
6352 ifunc = &h->plt.plist;
6354 else if (local_got_ents != NULL)
6356 struct plt_entry **local_plt = (struct plt_entry **)
6357 (local_got_ents + symtab_hdr->sh_info);
6358 unsigned char *local_got_tls_masks = (unsigned char *)
6359 (local_plt + symtab_hdr->sh_info);
6360 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6361 ifunc = local_plt + r_symndx;
6365 struct plt_entry *ent;
6367 for (ent = *ifunc; ent != NULL; ent = ent->next)
6368 if (ent->addend == rel->r_addend)
6372 if (ent->plt.refcount > 0)
6373 ent->plt.refcount -= 1;
6380 case R_PPC64_GOT_TLSLD16:
6381 case R_PPC64_GOT_TLSLD16_LO:
6382 case R_PPC64_GOT_TLSLD16_HI:
6383 case R_PPC64_GOT_TLSLD16_HA:
6384 tls_type = TLS_TLS | TLS_LD;
6387 case R_PPC64_GOT_TLSGD16:
6388 case R_PPC64_GOT_TLSGD16_LO:
6389 case R_PPC64_GOT_TLSGD16_HI:
6390 case R_PPC64_GOT_TLSGD16_HA:
6391 tls_type = TLS_TLS | TLS_GD;
6394 case R_PPC64_GOT_TPREL16_DS:
6395 case R_PPC64_GOT_TPREL16_LO_DS:
6396 case R_PPC64_GOT_TPREL16_HI:
6397 case R_PPC64_GOT_TPREL16_HA:
6398 tls_type = TLS_TLS | TLS_TPREL;
6401 case R_PPC64_GOT_DTPREL16_DS:
6402 case R_PPC64_GOT_DTPREL16_LO_DS:
6403 case R_PPC64_GOT_DTPREL16_HI:
6404 case R_PPC64_GOT_DTPREL16_HA:
6405 tls_type = TLS_TLS | TLS_DTPREL;
6409 case R_PPC64_GOT16_DS:
6410 case R_PPC64_GOT16_HA:
6411 case R_PPC64_GOT16_HI:
6412 case R_PPC64_GOT16_LO:
6413 case R_PPC64_GOT16_LO_DS:
6416 struct got_entry *ent;
6421 ent = local_got_ents[r_symndx];
6423 for (; ent != NULL; ent = ent->next)
6424 if (ent->addend == rel->r_addend
6425 && ent->owner == abfd
6426 && ent->tls_type == tls_type)
6430 if (ent->got.refcount > 0)
6431 ent->got.refcount -= 1;
6435 case R_PPC64_PLT16_HA:
6436 case R_PPC64_PLT16_HI:
6437 case R_PPC64_PLT16_LO:
6441 case R_PPC64_REL14_BRNTAKEN:
6442 case R_PPC64_REL14_BRTAKEN:
6446 struct plt_entry *ent;
6448 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6449 if (ent->addend == rel->r_addend)
6451 if (ent != NULL && ent->plt.refcount > 0)
6452 ent->plt.refcount -= 1;
6463 /* The maximum size of .sfpr. */
6464 #define SFPR_MAX (218*4)
6466 struct sfpr_def_parms
6468 const char name[12];
6469 unsigned char lo, hi;
6470 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6471 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6474 /* Auto-generate _save*, _rest* functions in .sfpr. */
6477 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6479 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6481 size_t len = strlen (parm->name);
6482 bfd_boolean writing = FALSE;
6488 memcpy (sym, parm->name, len);
6491 for (i = parm->lo; i <= parm->hi; i++)
6493 struct elf_link_hash_entry *h;
6495 sym[len + 0] = i / 10 + '0';
6496 sym[len + 1] = i % 10 + '0';
6497 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6501 h->root.type = bfd_link_hash_defined;
6502 h->root.u.def.section = htab->sfpr;
6503 h->root.u.def.value = htab->sfpr->size;
6506 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6508 if (htab->sfpr->contents == NULL)
6510 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6511 if (htab->sfpr->contents == NULL)
6517 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6519 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6521 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6522 htab->sfpr->size = p - htab->sfpr->contents;
6530 savegpr0 (bfd *abfd, bfd_byte *p, int r)
6532 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6537 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6539 p = savegpr0 (abfd, p, r);
6540 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6542 bfd_put_32 (abfd, BLR, p);
6547 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6549 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6554 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6556 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6558 p = restgpr0 (abfd, p, r);
6559 bfd_put_32 (abfd, MTLR_R0, p);
6563 p = restgpr0 (abfd, p, 30);
6564 p = restgpr0 (abfd, p, 31);
6566 bfd_put_32 (abfd, BLR, p);
6571 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6573 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6578 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6580 p = savegpr1 (abfd, p, r);
6581 bfd_put_32 (abfd, BLR, p);
6586 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6588 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6593 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6595 p = restgpr1 (abfd, p, r);
6596 bfd_put_32 (abfd, BLR, p);
6601 savefpr (bfd *abfd, bfd_byte *p, int r)
6603 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6608 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6610 p = savefpr (abfd, p, r);
6611 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
6613 bfd_put_32 (abfd, BLR, p);
6618 restfpr (bfd *abfd, bfd_byte *p, int r)
6620 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6625 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6627 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
6629 p = restfpr (abfd, p, r);
6630 bfd_put_32 (abfd, MTLR_R0, p);
6634 p = restfpr (abfd, p, 30);
6635 p = restfpr (abfd, p, 31);
6637 bfd_put_32 (abfd, BLR, p);
6642 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6644 p = savefpr (abfd, p, r);
6645 bfd_put_32 (abfd, BLR, p);
6650 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6652 p = restfpr (abfd, p, r);
6653 bfd_put_32 (abfd, BLR, p);
6658 savevr (bfd *abfd, bfd_byte *p, int r)
6660 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6662 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6667 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6669 p = savevr (abfd, p, r);
6670 bfd_put_32 (abfd, BLR, p);
6675 restvr (bfd *abfd, bfd_byte *p, int r)
6677 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6679 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6684 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6686 p = restvr (abfd, p, r);
6687 bfd_put_32 (abfd, BLR, p);
6691 /* Called via elf_link_hash_traverse to transfer dynamic linking
6692 information on function code symbol entries to their corresponding
6693 function descriptor symbol entries. */
6696 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6698 struct bfd_link_info *info;
6699 struct ppc_link_hash_table *htab;
6700 struct plt_entry *ent;
6701 struct ppc_link_hash_entry *fh;
6702 struct ppc_link_hash_entry *fdh;
6703 bfd_boolean force_local;
6705 fh = (struct ppc_link_hash_entry *) h;
6706 if (fh->elf.root.type == bfd_link_hash_indirect)
6710 htab = ppc_hash_table (info);
6714 /* Resolve undefined references to dot-symbols as the value
6715 in the function descriptor, if we have one in a regular object.
6716 This is to satisfy cases like ".quad .foo". Calls to functions
6717 in dynamic objects are handled elsewhere. */
6718 if (fh->elf.root.type == bfd_link_hash_undefweak
6719 && fh->was_undefined
6720 && (fdh = defined_func_desc (fh)) != NULL
6721 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6722 && opd_entry_value (fdh->elf.root.u.def.section,
6723 fdh->elf.root.u.def.value,
6724 &fh->elf.root.u.def.section,
6725 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
6727 fh->elf.root.type = fdh->elf.root.type;
6728 fh->elf.forced_local = 1;
6729 fh->elf.def_regular = fdh->elf.def_regular;
6730 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6733 /* If this is a function code symbol, transfer dynamic linking
6734 information to the function descriptor symbol. */
6738 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6739 if (ent->plt.refcount > 0)
6742 || fh->elf.root.root.string[0] != '.'
6743 || fh->elf.root.root.string[1] == '\0')
6746 /* Find the corresponding function descriptor symbol. Create it
6747 as undefined if necessary. */
6749 fdh = lookup_fdh (fh, htab);
6751 && !info->executable
6752 && (fh->elf.root.type == bfd_link_hash_undefined
6753 || fh->elf.root.type == bfd_link_hash_undefweak))
6755 fdh = make_fdh (info, fh);
6760 /* Fake function descriptors are made undefweak. If the function
6761 code symbol is strong undefined, make the fake sym the same.
6762 If the function code symbol is defined, then force the fake
6763 descriptor local; We can't support overriding of symbols in a
6764 shared library on a fake descriptor. */
6768 && fdh->elf.root.type == bfd_link_hash_undefweak)
6770 if (fh->elf.root.type == bfd_link_hash_undefined)
6772 fdh->elf.root.type = bfd_link_hash_undefined;
6773 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6775 else if (fh->elf.root.type == bfd_link_hash_defined
6776 || fh->elf.root.type == bfd_link_hash_defweak)
6778 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6783 && !fdh->elf.forced_local
6784 && (!info->executable
6785 || fdh->elf.def_dynamic
6786 || fdh->elf.ref_dynamic
6787 || (fdh->elf.root.type == bfd_link_hash_undefweak
6788 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6790 if (fdh->elf.dynindx == -1)
6791 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6793 fdh->elf.ref_regular |= fh->elf.ref_regular;
6794 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6795 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6796 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6797 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6799 move_plt_plist (fh, fdh);
6800 fdh->elf.needs_plt = 1;
6802 fdh->is_func_descriptor = 1;
6807 /* Now that the info is on the function descriptor, clear the
6808 function code sym info. Any function code syms for which we
6809 don't have a definition in a regular file, we force local.
6810 This prevents a shared library from exporting syms that have
6811 been imported from another library. Function code syms that
6812 are really in the library we must leave global to prevent the
6813 linker dragging in a definition from a static library. */
6814 force_local = (!fh->elf.def_regular
6816 || !fdh->elf.def_regular
6817 || fdh->elf.forced_local);
6818 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6823 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6824 this hook to a) provide some gcc support functions, and b) transfer
6825 dynamic linking information gathered so far on function code symbol
6826 entries, to their corresponding function descriptor symbol entries. */
6829 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6830 struct bfd_link_info *info)
6832 struct ppc_link_hash_table *htab;
6834 static const struct sfpr_def_parms funcs[] =
6836 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6837 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6838 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6839 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6840 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6841 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6842 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6843 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6844 { "._savef", 14, 31, savefpr, savefpr1_tail },
6845 { "._restf", 14, 31, restfpr, restfpr1_tail },
6846 { "_savevr_", 20, 31, savevr, savevr_tail },
6847 { "_restvr_", 20, 31, restvr, restvr_tail }
6850 htab = ppc_hash_table (info);
6854 if (!info->relocatable
6855 && htab->elf.hgot != NULL)
6856 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6858 if (htab->sfpr == NULL)
6859 /* We don't have any relocs. */
6862 /* Provide any missing _save* and _rest* functions. */
6863 htab->sfpr->size = 0;
6864 if (!info->relocatable)
6865 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6866 if (!sfpr_define (info, &funcs[i]))
6869 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6871 if (htab->sfpr->size == 0)
6872 htab->sfpr->flags |= SEC_EXCLUDE;
6877 /* Return true if we have dynamic relocs that apply to read-only sections. */
6880 readonly_dynrelocs (struct elf_link_hash_entry *h)
6882 struct ppc_link_hash_entry *eh;
6883 struct elf_dyn_relocs *p;
6885 eh = (struct ppc_link_hash_entry *) h;
6886 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6888 asection *s = p->sec->output_section;
6890 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6896 /* Adjust a symbol defined by a dynamic object and referenced by a
6897 regular object. The current definition is in some section of the
6898 dynamic object, but we're not including those sections. We have to
6899 change the definition to something the rest of the link can
6903 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6904 struct elf_link_hash_entry *h)
6906 struct ppc_link_hash_table *htab;
6909 htab = ppc_hash_table (info);
6913 /* Deal with function syms. */
6914 if (h->type == STT_FUNC
6915 || h->type == STT_GNU_IFUNC
6918 /* Clear procedure linkage table information for any symbol that
6919 won't need a .plt entry. */
6920 struct plt_entry *ent;
6921 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6922 if (ent->plt.refcount > 0)
6925 || (h->type != STT_GNU_IFUNC
6926 && (SYMBOL_CALLS_LOCAL (info, h)
6927 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6928 && h->root.type == bfd_link_hash_undefweak))))
6930 h->plt.plist = NULL;
6933 else if (abiversion (info->output_bfd) == 2)
6935 /* After adjust_dynamic_symbol, non_got_ref set in the
6936 non-shared case means that we have allocated space in
6937 .dynbss for the symbol and thus dyn_relocs for this
6938 symbol should be discarded.
6939 If we get here we know we are making a PLT entry for this
6940 symbol, and in an executable we'd normally resolve
6941 relocations against this symbol to the PLT entry. Allow
6942 dynamic relocs if the reference is weak, and the dynamic
6943 relocs will not cause text relocation. */
6944 if (!h->ref_regular_nonweak
6946 && h->type != STT_GNU_IFUNC
6947 && !readonly_dynrelocs (h))
6950 /* If making a plt entry, then we don't need copy relocs. */
6955 h->plt.plist = NULL;
6957 /* If this is a weak symbol, and there is a real definition, the
6958 processor independent code will have arranged for us to see the
6959 real definition first, and we can just use the same value. */
6960 if (h->u.weakdef != NULL)
6962 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6963 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6964 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6965 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6966 if (ELIMINATE_COPY_RELOCS)
6967 h->non_got_ref = h->u.weakdef->non_got_ref;
6971 /* If we are creating a shared library, we must presume that the
6972 only references to the symbol are via the global offset table.
6973 For such cases we need not do anything here; the relocations will
6974 be handled correctly by relocate_section. */
6978 /* If there are no references to this symbol that do not use the
6979 GOT, we don't need to generate a copy reloc. */
6980 if (!h->non_got_ref)
6983 /* Don't generate a copy reloc for symbols defined in the executable. */
6984 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6987 /* If we didn't find any dynamic relocs in read-only sections, then
6988 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6989 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
6995 if (h->plt.plist != NULL)
6997 /* We should never get here, but unfortunately there are versions
6998 of gcc out there that improperly (for this ABI) put initialized
6999 function pointers, vtable refs and suchlike in read-only
7000 sections. Allow them to proceed, but warn that this might
7001 break at runtime. */
7002 info->callbacks->einfo
7003 (_("%P: copy reloc against `%T' requires lazy plt linking; "
7004 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
7005 h->root.root.string);
7008 /* This is a reference to a symbol defined by a dynamic object which
7009 is not a function. */
7011 /* We must allocate the symbol in our .dynbss section, which will
7012 become part of the .bss section of the executable. There will be
7013 an entry for this symbol in the .dynsym section. The dynamic
7014 object will contain position independent code, so all references
7015 from the dynamic object to this symbol will go through the global
7016 offset table. The dynamic linker will use the .dynsym entry to
7017 determine the address it must put in the global offset table, so
7018 both the dynamic object and the regular object will refer to the
7019 same memory location for the variable. */
7021 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7022 to copy the initial value out of the dynamic object and into the
7023 runtime process image. We need to remember the offset into the
7024 .rela.bss section we are going to use. */
7025 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7027 htab->relbss->size += sizeof (Elf64_External_Rela);
7033 return _bfd_elf_adjust_dynamic_copy (h, s);
7036 /* If given a function descriptor symbol, hide both the function code
7037 sym and the descriptor. */
7039 ppc64_elf_hide_symbol (struct bfd_link_info *info,
7040 struct elf_link_hash_entry *h,
7041 bfd_boolean force_local)
7043 struct ppc_link_hash_entry *eh;
7044 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7046 eh = (struct ppc_link_hash_entry *) h;
7047 if (eh->is_func_descriptor)
7049 struct ppc_link_hash_entry *fh = eh->oh;
7054 struct ppc_link_hash_table *htab;
7057 /* We aren't supposed to use alloca in BFD because on
7058 systems which do not have alloca the version in libiberty
7059 calls xmalloc, which might cause the program to crash
7060 when it runs out of memory. This function doesn't have a
7061 return status, so there's no way to gracefully return an
7062 error. So cheat. We know that string[-1] can be safely
7063 accessed; It's either a string in an ELF string table,
7064 or allocated in an objalloc structure. */
7066 p = eh->elf.root.root.string - 1;
7069 htab = ppc_hash_table (info);
7073 fh = (struct ppc_link_hash_entry *)
7074 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7077 /* Unfortunately, if it so happens that the string we were
7078 looking for was allocated immediately before this string,
7079 then we overwrote the string terminator. That's the only
7080 reason the lookup should fail. */
7083 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7084 while (q >= eh->elf.root.root.string && *q == *p)
7086 if (q < eh->elf.root.root.string && *p == '.')
7087 fh = (struct ppc_link_hash_entry *)
7088 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
7097 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7102 get_sym_h (struct elf_link_hash_entry **hp,
7103 Elf_Internal_Sym **symp,
7105 unsigned char **tls_maskp,
7106 Elf_Internal_Sym **locsymsp,
7107 unsigned long r_symndx,
7110 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7112 if (r_symndx >= symtab_hdr->sh_info)
7114 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7115 struct elf_link_hash_entry *h;
7117 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7118 h = elf_follow_link (h);
7126 if (symsecp != NULL)
7128 asection *symsec = NULL;
7129 if (h->root.type == bfd_link_hash_defined
7130 || h->root.type == bfd_link_hash_defweak)
7131 symsec = h->root.u.def.section;
7135 if (tls_maskp != NULL)
7137 struct ppc_link_hash_entry *eh;
7139 eh = (struct ppc_link_hash_entry *) h;
7140 *tls_maskp = &eh->tls_mask;
7145 Elf_Internal_Sym *sym;
7146 Elf_Internal_Sym *locsyms = *locsymsp;
7148 if (locsyms == NULL)
7150 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7151 if (locsyms == NULL)
7152 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7153 symtab_hdr->sh_info,
7154 0, NULL, NULL, NULL);
7155 if (locsyms == NULL)
7157 *locsymsp = locsyms;
7159 sym = locsyms + r_symndx;
7167 if (symsecp != NULL)
7168 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
7170 if (tls_maskp != NULL)
7172 struct got_entry **lgot_ents;
7173 unsigned char *tls_mask;
7176 lgot_ents = elf_local_got_ents (ibfd);
7177 if (lgot_ents != NULL)
7179 struct plt_entry **local_plt = (struct plt_entry **)
7180 (lgot_ents + symtab_hdr->sh_info);
7181 unsigned char *lgot_masks = (unsigned char *)
7182 (local_plt + symtab_hdr->sh_info);
7183 tls_mask = &lgot_masks[r_symndx];
7185 *tls_maskp = tls_mask;
7191 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
7192 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
7193 type suitable for optimization, and 1 otherwise. */
7196 get_tls_mask (unsigned char **tls_maskp,
7197 unsigned long *toc_symndx,
7198 bfd_vma *toc_addend,
7199 Elf_Internal_Sym **locsymsp,
7200 const Elf_Internal_Rela *rel,
7203 unsigned long r_symndx;
7205 struct elf_link_hash_entry *h;
7206 Elf_Internal_Sym *sym;
7210 r_symndx = ELF64_R_SYM (rel->r_info);
7211 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7214 if ((*tls_maskp != NULL && **tls_maskp != 0)
7216 || ppc64_elf_section_data (sec) == NULL
7217 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
7220 /* Look inside a TOC section too. */
7223 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7224 off = h->root.u.def.value;
7227 off = sym->st_value;
7228 off += rel->r_addend;
7229 BFD_ASSERT (off % 8 == 0);
7230 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7231 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
7232 if (toc_symndx != NULL)
7233 *toc_symndx = r_symndx;
7234 if (toc_addend != NULL)
7235 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7236 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7238 if ((h == NULL || is_static_defined (h))
7239 && (next_r == -1 || next_r == -2))
7244 /* Find (or create) an entry in the tocsave hash table. */
7246 static struct tocsave_entry *
7247 tocsave_find (struct ppc_link_hash_table *htab,
7248 enum insert_option insert,
7249 Elf_Internal_Sym **local_syms,
7250 const Elf_Internal_Rela *irela,
7253 unsigned long r_indx;
7254 struct elf_link_hash_entry *h;
7255 Elf_Internal_Sym *sym;
7256 struct tocsave_entry ent, *p;
7258 struct tocsave_entry **slot;
7260 r_indx = ELF64_R_SYM (irela->r_info);
7261 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7263 if (ent.sec == NULL || ent.sec->output_section == NULL)
7265 (*_bfd_error_handler)
7266 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7271 ent.offset = h->root.u.def.value;
7273 ent.offset = sym->st_value;
7274 ent.offset += irela->r_addend;
7276 hash = tocsave_htab_hash (&ent);
7277 slot = ((struct tocsave_entry **)
7278 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7284 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7293 /* Adjust all global syms defined in opd sections. In gcc generated
7294 code for the old ABI, these will already have been done. */
7297 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7299 struct ppc_link_hash_entry *eh;
7301 struct _opd_sec_data *opd;
7303 if (h->root.type == bfd_link_hash_indirect)
7306 if (h->root.type != bfd_link_hash_defined
7307 && h->root.type != bfd_link_hash_defweak)
7310 eh = (struct ppc_link_hash_entry *) h;
7311 if (eh->adjust_done)
7314 sym_sec = eh->elf.root.u.def.section;
7315 opd = get_opd_info (sym_sec);
7316 if (opd != NULL && opd->adjust != NULL)
7318 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
7321 /* This entry has been deleted. */
7322 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
7325 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
7326 if (discarded_section (dsec))
7328 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
7332 eh->elf.root.u.def.value = 0;
7333 eh->elf.root.u.def.section = dsec;
7336 eh->elf.root.u.def.value += adjust;
7337 eh->adjust_done = 1;
7342 /* Handles decrementing dynamic reloc counts for the reloc specified by
7343 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
7344 have already been determined. */
7347 dec_dynrel_count (bfd_vma r_info,
7349 struct bfd_link_info *info,
7350 Elf_Internal_Sym **local_syms,
7351 struct elf_link_hash_entry *h,
7352 Elf_Internal_Sym *sym)
7354 enum elf_ppc64_reloc_type r_type;
7355 asection *sym_sec = NULL;
7357 /* Can this reloc be dynamic? This switch, and later tests here
7358 should be kept in sync with the code in check_relocs. */
7359 r_type = ELF64_R_TYPE (r_info);
7365 case R_PPC64_TPREL16:
7366 case R_PPC64_TPREL16_LO:
7367 case R_PPC64_TPREL16_HI:
7368 case R_PPC64_TPREL16_HA:
7369 case R_PPC64_TPREL16_DS:
7370 case R_PPC64_TPREL16_LO_DS:
7371 case R_PPC64_TPREL16_HIGH:
7372 case R_PPC64_TPREL16_HIGHA:
7373 case R_PPC64_TPREL16_HIGHER:
7374 case R_PPC64_TPREL16_HIGHERA:
7375 case R_PPC64_TPREL16_HIGHEST:
7376 case R_PPC64_TPREL16_HIGHESTA:
7380 case R_PPC64_TPREL64:
7381 case R_PPC64_DTPMOD64:
7382 case R_PPC64_DTPREL64:
7383 case R_PPC64_ADDR64:
7387 case R_PPC64_ADDR14:
7388 case R_PPC64_ADDR14_BRNTAKEN:
7389 case R_PPC64_ADDR14_BRTAKEN:
7390 case R_PPC64_ADDR16:
7391 case R_PPC64_ADDR16_DS:
7392 case R_PPC64_ADDR16_HA:
7393 case R_PPC64_ADDR16_HI:
7394 case R_PPC64_ADDR16_HIGH:
7395 case R_PPC64_ADDR16_HIGHA:
7396 case R_PPC64_ADDR16_HIGHER:
7397 case R_PPC64_ADDR16_HIGHERA:
7398 case R_PPC64_ADDR16_HIGHEST:
7399 case R_PPC64_ADDR16_HIGHESTA:
7400 case R_PPC64_ADDR16_LO:
7401 case R_PPC64_ADDR16_LO_DS:
7402 case R_PPC64_ADDR24:
7403 case R_PPC64_ADDR32:
7404 case R_PPC64_UADDR16:
7405 case R_PPC64_UADDR32:
7406 case R_PPC64_UADDR64:
7411 if (local_syms != NULL)
7413 unsigned long r_symndx;
7414 bfd *ibfd = sec->owner;
7416 r_symndx = ELF64_R_SYM (r_info);
7417 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7422 && (must_be_dyn_reloc (info, r_type)
7424 && (!SYMBOLIC_BIND (info, h)
7425 || h->root.type == bfd_link_hash_defweak
7426 || !h->def_regular))))
7427 || (ELIMINATE_COPY_RELOCS
7430 && (h->root.type == bfd_link_hash_defweak
7431 || !h->def_regular)))
7438 struct elf_dyn_relocs *p;
7439 struct elf_dyn_relocs **pp;
7440 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7442 /* elf_gc_sweep may have already removed all dyn relocs associated
7443 with local syms for a given section. Also, symbol flags are
7444 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7445 report a dynreloc miscount. */
7446 if (*pp == NULL && info->gc_sections)
7449 while ((p = *pp) != NULL)
7453 if (!must_be_dyn_reloc (info, r_type))
7465 struct ppc_dyn_relocs *p;
7466 struct ppc_dyn_relocs **pp;
7468 bfd_boolean is_ifunc;
7470 if (local_syms == NULL)
7471 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7472 if (sym_sec == NULL)
7475 vpp = &elf_section_data (sym_sec)->local_dynrel;
7476 pp = (struct ppc_dyn_relocs **) vpp;
7478 if (*pp == NULL && info->gc_sections)
7481 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7482 while ((p = *pp) != NULL)
7484 if (p->sec == sec && p->ifunc == is_ifunc)
7495 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
7497 bfd_set_error (bfd_error_bad_value);
7501 /* Remove unused Official Procedure Descriptor entries. Currently we
7502 only remove those associated with functions in discarded link-once
7503 sections, or weakly defined functions that have been overridden. It
7504 would be possible to remove many more entries for statically linked
7508 ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
7511 bfd_boolean some_edited = FALSE;
7512 asection *need_pad = NULL;
7514 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7517 Elf_Internal_Rela *relstart, *rel, *relend;
7518 Elf_Internal_Shdr *symtab_hdr;
7519 Elf_Internal_Sym *local_syms;
7521 struct _opd_sec_data *opd;
7522 bfd_boolean need_edit, add_aux_fields;
7523 bfd_size_type cnt_16b = 0;
7525 if (!is_ppc64_elf (ibfd))
7528 sec = bfd_get_section_by_name (ibfd, ".opd");
7529 if (sec == NULL || sec->size == 0)
7532 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
7535 if (sec->output_section == bfd_abs_section_ptr)
7538 /* Look through the section relocs. */
7539 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7543 symtab_hdr = &elf_symtab_hdr (ibfd);
7545 /* Read the relocations. */
7546 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7548 if (relstart == NULL)
7551 /* First run through the relocs to check they are sane, and to
7552 determine whether we need to edit this opd section. */
7556 relend = relstart + sec->reloc_count;
7557 for (rel = relstart; rel < relend; )
7559 enum elf_ppc64_reloc_type r_type;
7560 unsigned long r_symndx;
7562 struct elf_link_hash_entry *h;
7563 Elf_Internal_Sym *sym;
7565 /* .opd contains a regular array of 16 or 24 byte entries. We're
7566 only interested in the reloc pointing to a function entry
7568 if (rel->r_offset != offset
7569 || rel + 1 >= relend
7570 || (rel + 1)->r_offset != offset + 8)
7572 /* If someone messes with .opd alignment then after a
7573 "ld -r" we might have padding in the middle of .opd.
7574 Also, there's nothing to prevent someone putting
7575 something silly in .opd with the assembler. No .opd
7576 optimization for them! */
7578 (*_bfd_error_handler)
7579 (_("%B: .opd is not a regular array of opd entries"), ibfd);
7584 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7585 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7587 (*_bfd_error_handler)
7588 (_("%B: unexpected reloc type %u in .opd section"),
7594 r_symndx = ELF64_R_SYM (rel->r_info);
7595 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7599 if (sym_sec == NULL || sym_sec->owner == NULL)
7601 const char *sym_name;
7603 sym_name = h->root.root.string;
7605 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7608 (*_bfd_error_handler)
7609 (_("%B: undefined sym `%s' in .opd section"),
7615 /* opd entries are always for functions defined in the
7616 current input bfd. If the symbol isn't defined in the
7617 input bfd, then we won't be using the function in this
7618 bfd; It must be defined in a linkonce section in another
7619 bfd, or is weak. It's also possible that we are
7620 discarding the function due to a linker script /DISCARD/,
7621 which we test for via the output_section. */
7622 if (sym_sec->owner != ibfd
7623 || sym_sec->output_section == bfd_abs_section_ptr)
7628 || (rel + 1 == relend && rel->r_offset == offset + 16))
7630 if (sec->size == offset + 24)
7635 if (rel == relend && sec->size == offset + 16)
7643 if (rel->r_offset == offset + 24)
7645 else if (rel->r_offset != offset + 16)
7647 else if (rel + 1 < relend
7648 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7649 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7654 else if (rel + 2 < relend
7655 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7656 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7665 add_aux_fields = non_overlapping && cnt_16b > 0;
7667 if (need_edit || add_aux_fields)
7669 Elf_Internal_Rela *write_rel;
7670 Elf_Internal_Shdr *rel_hdr;
7671 bfd_byte *rptr, *wptr;
7672 bfd_byte *new_contents;
7677 new_contents = NULL;
7678 amt = sec->size * sizeof (long) / 8;
7679 opd = &ppc64_elf_section_data (sec)->u.opd;
7680 opd->adjust = bfd_zalloc (sec->owner, amt);
7681 if (opd->adjust == NULL)
7683 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7685 /* This seems a waste of time as input .opd sections are all
7686 zeros as generated by gcc, but I suppose there's no reason
7687 this will always be so. We might start putting something in
7688 the third word of .opd entries. */
7689 if ((sec->flags & SEC_IN_MEMORY) == 0)
7692 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7697 if (local_syms != NULL
7698 && symtab_hdr->contents != (unsigned char *) local_syms)
7700 if (elf_section_data (sec)->relocs != relstart)
7704 sec->contents = loc;
7705 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7708 elf_section_data (sec)->relocs = relstart;
7710 new_contents = sec->contents;
7713 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7714 if (new_contents == NULL)
7718 wptr = new_contents;
7719 rptr = sec->contents;
7721 write_rel = relstart;
7725 for (rel = relstart; rel < relend; rel++)
7727 unsigned long r_symndx;
7729 struct elf_link_hash_entry *h;
7730 Elf_Internal_Sym *sym;
7732 r_symndx = ELF64_R_SYM (rel->r_info);
7733 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7737 if (rel->r_offset == offset)
7739 struct ppc_link_hash_entry *fdh = NULL;
7741 /* See if the .opd entry is full 24 byte or
7742 16 byte (with fd_aux entry overlapped with next
7745 if ((rel + 2 == relend && sec->size == offset + 16)
7746 || (rel + 3 < relend
7747 && rel[2].r_offset == offset + 16
7748 && rel[3].r_offset == offset + 24
7749 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7750 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7754 && h->root.root.string[0] == '.')
7756 struct ppc_link_hash_table *htab;
7758 htab = ppc_hash_table (info);
7760 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7763 && fdh->elf.root.type != bfd_link_hash_defined
7764 && fdh->elf.root.type != bfd_link_hash_defweak)
7768 skip = (sym_sec->owner != ibfd
7769 || sym_sec->output_section == bfd_abs_section_ptr);
7772 if (fdh != NULL && sym_sec->owner == ibfd)
7774 /* Arrange for the function descriptor sym
7776 fdh->elf.root.u.def.value = 0;
7777 fdh->elf.root.u.def.section = sym_sec;
7779 opd->adjust[rel->r_offset / 8] = -1;
7783 /* We'll be keeping this opd entry. */
7787 /* Redefine the function descriptor symbol to
7788 this location in the opd section. It is
7789 necessary to update the value here rather
7790 than using an array of adjustments as we do
7791 for local symbols, because various places
7792 in the generic ELF code use the value
7793 stored in u.def.value. */
7794 fdh->elf.root.u.def.value = wptr - new_contents;
7795 fdh->adjust_done = 1;
7798 /* Local syms are a bit tricky. We could
7799 tweak them as they can be cached, but
7800 we'd need to look through the local syms
7801 for the function descriptor sym which we
7802 don't have at the moment. So keep an
7803 array of adjustments. */
7804 opd->adjust[rel->r_offset / 8]
7805 = (wptr - new_contents) - (rptr - sec->contents);
7808 memcpy (wptr, rptr, opd_ent_size);
7809 wptr += opd_ent_size;
7810 if (add_aux_fields && opd_ent_size == 16)
7812 memset (wptr, '\0', 8);
7816 rptr += opd_ent_size;
7817 offset += opd_ent_size;
7823 && !info->relocatable
7824 && !dec_dynrel_count (rel->r_info, sec, info,
7830 /* We need to adjust any reloc offsets to point to the
7831 new opd entries. While we're at it, we may as well
7832 remove redundant relocs. */
7833 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7834 if (write_rel != rel)
7835 memcpy (write_rel, rel, sizeof (*rel));
7840 sec->size = wptr - new_contents;
7841 sec->reloc_count = write_rel - relstart;
7844 free (sec->contents);
7845 sec->contents = new_contents;
7848 /* Fudge the header size too, as this is used later in
7849 elf_bfd_final_link if we are emitting relocs. */
7850 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7851 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
7854 else if (elf_section_data (sec)->relocs != relstart)
7857 if (local_syms != NULL
7858 && symtab_hdr->contents != (unsigned char *) local_syms)
7860 if (!info->keep_memory)
7863 symtab_hdr->contents = (unsigned char *) local_syms;
7868 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7870 /* If we are doing a final link and the last .opd entry is just 16 byte
7871 long, add a 8 byte padding after it. */
7872 if (need_pad != NULL && !info->relocatable)
7876 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7878 BFD_ASSERT (need_pad->size > 0);
7880 p = bfd_malloc (need_pad->size + 8);
7884 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7885 p, 0, need_pad->size))
7888 need_pad->contents = p;
7889 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7893 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7897 need_pad->contents = p;
7900 memset (need_pad->contents + need_pad->size, 0, 8);
7901 need_pad->size += 8;
7907 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7910 ppc64_elf_tls_setup (struct bfd_link_info *info,
7911 int no_tls_get_addr_opt,
7914 struct ppc_link_hash_table *htab;
7916 htab = ppc_hash_table (info);
7920 if (abiversion (info->output_bfd) == 1)
7924 htab->do_multi_toc = 0;
7925 else if (!htab->do_multi_toc)
7928 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7929 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7930 FALSE, FALSE, TRUE));
7931 /* Move dynamic linking info to the function descriptor sym. */
7932 if (htab->tls_get_addr != NULL)
7933 func_desc_adjust (&htab->tls_get_addr->elf, info);
7934 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7935 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7936 FALSE, FALSE, TRUE));
7937 if (!no_tls_get_addr_opt)
7939 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7941 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7942 FALSE, FALSE, TRUE);
7944 func_desc_adjust (opt, info);
7945 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7946 FALSE, FALSE, TRUE);
7948 && (opt_fd->root.type == bfd_link_hash_defined
7949 || opt_fd->root.type == bfd_link_hash_defweak))
7951 /* If glibc supports an optimized __tls_get_addr call stub,
7952 signalled by the presence of __tls_get_addr_opt, and we'll
7953 be calling __tls_get_addr via a plt call stub, then
7954 make __tls_get_addr point to __tls_get_addr_opt. */
7955 tga_fd = &htab->tls_get_addr_fd->elf;
7956 if (htab->elf.dynamic_sections_created
7958 && (tga_fd->type == STT_FUNC
7959 || tga_fd->needs_plt)
7960 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7961 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7962 && tga_fd->root.type == bfd_link_hash_undefweak)))
7964 struct plt_entry *ent;
7966 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7967 if (ent->plt.refcount > 0)
7971 tga_fd->root.type = bfd_link_hash_indirect;
7972 tga_fd->root.u.i.link = &opt_fd->root;
7973 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7974 if (opt_fd->dynindx != -1)
7976 /* Use __tls_get_addr_opt in dynamic relocations. */
7977 opt_fd->dynindx = -1;
7978 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7979 opt_fd->dynstr_index);
7980 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7983 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7984 tga = &htab->tls_get_addr->elf;
7985 if (opt != NULL && tga != NULL)
7987 tga->root.type = bfd_link_hash_indirect;
7988 tga->root.u.i.link = &opt->root;
7989 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7990 _bfd_elf_link_hash_hide_symbol (info, opt,
7992 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7994 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7995 htab->tls_get_addr_fd->is_func_descriptor = 1;
7996 if (htab->tls_get_addr != NULL)
7998 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7999 htab->tls_get_addr->is_func = 1;
8005 no_tls_get_addr_opt = TRUE;
8007 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
8008 return _bfd_elf_tls_setup (info->output_bfd, info);
8011 /* Return TRUE iff REL is a branch reloc with a global symbol matching
8015 branch_reloc_hash_match (const bfd *ibfd,
8016 const Elf_Internal_Rela *rel,
8017 const struct ppc_link_hash_entry *hash1,
8018 const struct ppc_link_hash_entry *hash2)
8020 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8021 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8022 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8024 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8026 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8027 struct elf_link_hash_entry *h;
8029 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8030 h = elf_follow_link (h);
8031 if (h == &hash1->elf || h == &hash2->elf)
8037 /* Run through all the TLS relocs looking for optimization
8038 opportunities. The linker has been hacked (see ppc64elf.em) to do
8039 a preliminary section layout so that we know the TLS segment
8040 offsets. We can't optimize earlier because some optimizations need
8041 to know the tp offset, and we need to optimize before allocating
8042 dynamic relocations. */
8045 ppc64_elf_tls_optimize (struct bfd_link_info *info)
8049 struct ppc_link_hash_table *htab;
8050 unsigned char *toc_ref;
8053 if (info->relocatable || !info->executable)
8056 htab = ppc_hash_table (info);
8060 /* Make two passes over the relocs. On the first pass, mark toc
8061 entries involved with tls relocs, and check that tls relocs
8062 involved in setting up a tls_get_addr call are indeed followed by
8063 such a call. If they are not, we can't do any tls optimization.
8064 On the second pass twiddle tls_mask flags to notify
8065 relocate_section that optimization can be done, and adjust got
8066 and plt refcounts. */
8068 for (pass = 0; pass < 2; ++pass)
8069 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8071 Elf_Internal_Sym *locsyms = NULL;
8072 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8074 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8075 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8077 Elf_Internal_Rela *relstart, *rel, *relend;
8078 bfd_boolean found_tls_get_addr_arg = 0;
8080 /* Read the relocations. */
8081 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8083 if (relstart == NULL)
8086 relend = relstart + sec->reloc_count;
8087 for (rel = relstart; rel < relend; rel++)
8089 enum elf_ppc64_reloc_type r_type;
8090 unsigned long r_symndx;
8091 struct elf_link_hash_entry *h;
8092 Elf_Internal_Sym *sym;
8094 unsigned char *tls_mask;
8095 unsigned char tls_set, tls_clear, tls_type = 0;
8097 bfd_boolean ok_tprel, is_local;
8098 long toc_ref_index = 0;
8099 int expecting_tls_get_addr = 0;
8100 bfd_boolean ret = FALSE;
8102 r_symndx = ELF64_R_SYM (rel->r_info);
8103 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8107 if (elf_section_data (sec)->relocs != relstart)
8109 if (toc_ref != NULL)
8112 && (elf_symtab_hdr (ibfd).contents
8113 != (unsigned char *) locsyms))
8120 if (h->root.type == bfd_link_hash_defined
8121 || h->root.type == bfd_link_hash_defweak)
8122 value = h->root.u.def.value;
8123 else if (h->root.type == bfd_link_hash_undefweak)
8127 found_tls_get_addr_arg = 0;
8132 /* Symbols referenced by TLS relocs must be of type
8133 STT_TLS. So no need for .opd local sym adjust. */
8134 value = sym->st_value;
8143 && h->root.type == bfd_link_hash_undefweak)
8147 value += sym_sec->output_offset;
8148 value += sym_sec->output_section->vma;
8149 value -= htab->elf.tls_sec->vma;
8150 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8151 < (bfd_vma) 1 << 32);
8155 r_type = ELF64_R_TYPE (rel->r_info);
8156 /* If this section has old-style __tls_get_addr calls
8157 without marker relocs, then check that each
8158 __tls_get_addr call reloc is preceded by a reloc
8159 that conceivably belongs to the __tls_get_addr arg
8160 setup insn. If we don't find matching arg setup
8161 relocs, don't do any tls optimization. */
8163 && sec->has_tls_get_addr_call
8165 && (h == &htab->tls_get_addr->elf
8166 || h == &htab->tls_get_addr_fd->elf)
8167 && !found_tls_get_addr_arg
8168 && is_branch_reloc (r_type))
8170 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
8171 "TLS optimization disabled\n"),
8172 ibfd, sec, rel->r_offset);
8177 found_tls_get_addr_arg = 0;
8180 case R_PPC64_GOT_TLSLD16:
8181 case R_PPC64_GOT_TLSLD16_LO:
8182 expecting_tls_get_addr = 1;
8183 found_tls_get_addr_arg = 1;
8186 case R_PPC64_GOT_TLSLD16_HI:
8187 case R_PPC64_GOT_TLSLD16_HA:
8188 /* These relocs should never be against a symbol
8189 defined in a shared lib. Leave them alone if
8190 that turns out to be the case. */
8197 tls_type = TLS_TLS | TLS_LD;
8200 case R_PPC64_GOT_TLSGD16:
8201 case R_PPC64_GOT_TLSGD16_LO:
8202 expecting_tls_get_addr = 1;
8203 found_tls_get_addr_arg = 1;
8206 case R_PPC64_GOT_TLSGD16_HI:
8207 case R_PPC64_GOT_TLSGD16_HA:
8213 tls_set = TLS_TLS | TLS_TPRELGD;
8215 tls_type = TLS_TLS | TLS_GD;
8218 case R_PPC64_GOT_TPREL16_DS:
8219 case R_PPC64_GOT_TPREL16_LO_DS:
8220 case R_PPC64_GOT_TPREL16_HI:
8221 case R_PPC64_GOT_TPREL16_HA:
8226 tls_clear = TLS_TPREL;
8227 tls_type = TLS_TLS | TLS_TPREL;
8234 found_tls_get_addr_arg = 1;
8239 case R_PPC64_TOC16_LO:
8240 if (sym_sec == NULL || sym_sec != toc)
8243 /* Mark this toc entry as referenced by a TLS
8244 code sequence. We can do that now in the
8245 case of R_PPC64_TLS, and after checking for
8246 tls_get_addr for the TOC16 relocs. */
8247 if (toc_ref == NULL)
8248 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8249 if (toc_ref == NULL)
8253 value = h->root.u.def.value;
8255 value = sym->st_value;
8256 value += rel->r_addend;
8257 BFD_ASSERT (value < toc->size && value % 8 == 0);
8258 toc_ref_index = (value + toc->output_offset) / 8;
8259 if (r_type == R_PPC64_TLS
8260 || r_type == R_PPC64_TLSGD
8261 || r_type == R_PPC64_TLSLD)
8263 toc_ref[toc_ref_index] = 1;
8267 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8272 expecting_tls_get_addr = 2;
8275 case R_PPC64_TPREL64:
8279 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8284 tls_set = TLS_EXPLICIT;
8285 tls_clear = TLS_TPREL;
8290 case R_PPC64_DTPMOD64:
8294 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
8296 if (rel + 1 < relend
8298 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8299 && rel[1].r_offset == rel->r_offset + 8)
8303 tls_set = TLS_EXPLICIT | TLS_GD;
8306 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8315 tls_set = TLS_EXPLICIT;
8326 if (!expecting_tls_get_addr
8327 || !sec->has_tls_get_addr_call)
8330 if (rel + 1 < relend
8331 && branch_reloc_hash_match (ibfd, rel + 1,
8333 htab->tls_get_addr_fd))
8335 if (expecting_tls_get_addr == 2)
8337 /* Check for toc tls entries. */
8338 unsigned char *toc_tls;
8341 retval = get_tls_mask (&toc_tls, NULL, NULL,
8346 if (toc_tls != NULL)
8348 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8349 found_tls_get_addr_arg = 1;
8351 toc_ref[toc_ref_index] = 1;
8357 if (expecting_tls_get_addr != 1)
8360 /* Uh oh, we didn't find the expected call. We
8361 could just mark this symbol to exclude it
8362 from tls optimization but it's safer to skip
8363 the entire optimization. */
8364 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
8365 "TLS optimization disabled\n"),
8366 ibfd, sec, rel->r_offset);
8371 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
8373 struct plt_entry *ent;
8374 for (ent = htab->tls_get_addr->elf.plt.plist;
8377 if (ent->addend == 0)
8379 if (ent->plt.refcount > 0)
8381 ent->plt.refcount -= 1;
8382 expecting_tls_get_addr = 0;
8388 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
8390 struct plt_entry *ent;
8391 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8394 if (ent->addend == 0)
8396 if (ent->plt.refcount > 0)
8397 ent->plt.refcount -= 1;
8405 if ((tls_set & TLS_EXPLICIT) == 0)
8407 struct got_entry *ent;
8409 /* Adjust got entry for this reloc. */
8413 ent = elf_local_got_ents (ibfd)[r_symndx];
8415 for (; ent != NULL; ent = ent->next)
8416 if (ent->addend == rel->r_addend
8417 && ent->owner == ibfd
8418 && ent->tls_type == tls_type)
8425 /* We managed to get rid of a got entry. */
8426 if (ent->got.refcount > 0)
8427 ent->got.refcount -= 1;
8432 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8433 we'll lose one or two dyn relocs. */
8434 if (!dec_dynrel_count (rel->r_info, sec, info,
8438 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8440 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8446 *tls_mask |= tls_set;
8447 *tls_mask &= ~tls_clear;
8450 if (elf_section_data (sec)->relocs != relstart)
8455 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8457 if (!info->keep_memory)
8460 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8464 if (toc_ref != NULL)
8469 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8470 the values of any global symbols in a toc section that has been
8471 edited. Globals in toc sections should be a rarity, so this function
8472 sets a flag if any are found in toc sections other than the one just
8473 edited, so that futher hash table traversals can be avoided. */
8475 struct adjust_toc_info
8478 unsigned long *skip;
8479 bfd_boolean global_toc_syms;
8482 enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8485 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8487 struct ppc_link_hash_entry *eh;
8488 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
8491 if (h->root.type != bfd_link_hash_defined
8492 && h->root.type != bfd_link_hash_defweak)
8495 eh = (struct ppc_link_hash_entry *) h;
8496 if (eh->adjust_done)
8499 if (eh->elf.root.u.def.section == toc_inf->toc)
8501 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8502 i = toc_inf->toc->rawsize >> 3;
8504 i = eh->elf.root.u.def.value >> 3;
8506 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
8508 (*_bfd_error_handler)
8509 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8512 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
8513 eh->elf.root.u.def.value = (bfd_vma) i << 3;
8516 eh->elf.root.u.def.value -= toc_inf->skip[i];
8517 eh->adjust_done = 1;
8519 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8520 toc_inf->global_toc_syms = TRUE;
8525 /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8528 ok_lo_toc_insn (unsigned int insn)
8530 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8531 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8532 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8533 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8534 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8535 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8536 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8537 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8538 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8539 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8540 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8541 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8542 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8543 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8544 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8546 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8547 && ((insn & 3) == 0 || (insn & 3) == 3))
8548 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8551 /* Examine all relocs referencing .toc sections in order to remove
8552 unused .toc entries. */
8555 ppc64_elf_edit_toc (struct bfd_link_info *info)
8558 struct adjust_toc_info toc_inf;
8559 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8561 htab->do_toc_opt = 1;
8562 toc_inf.global_toc_syms = TRUE;
8563 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8565 asection *toc, *sec;
8566 Elf_Internal_Shdr *symtab_hdr;
8567 Elf_Internal_Sym *local_syms;
8568 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
8569 unsigned long *skip, *drop;
8570 unsigned char *used;
8571 unsigned char *keep, last, some_unused;
8573 if (!is_ppc64_elf (ibfd))
8576 toc = bfd_get_section_by_name (ibfd, ".toc");
8579 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8580 || discarded_section (toc))
8585 symtab_hdr = &elf_symtab_hdr (ibfd);
8587 /* Look at sections dropped from the final link. */
8590 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8592 if (sec->reloc_count == 0
8593 || !discarded_section (sec)
8594 || get_opd_info (sec)
8595 || (sec->flags & SEC_ALLOC) == 0
8596 || (sec->flags & SEC_DEBUGGING) != 0)
8599 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8600 if (relstart == NULL)
8603 /* Run through the relocs to see which toc entries might be
8605 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8607 enum elf_ppc64_reloc_type r_type;
8608 unsigned long r_symndx;
8610 struct elf_link_hash_entry *h;
8611 Elf_Internal_Sym *sym;
8614 r_type = ELF64_R_TYPE (rel->r_info);
8621 case R_PPC64_TOC16_LO:
8622 case R_PPC64_TOC16_HI:
8623 case R_PPC64_TOC16_HA:
8624 case R_PPC64_TOC16_DS:
8625 case R_PPC64_TOC16_LO_DS:
8629 r_symndx = ELF64_R_SYM (rel->r_info);
8630 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8638 val = h->root.u.def.value;
8640 val = sym->st_value;
8641 val += rel->r_addend;
8643 if (val >= toc->size)
8646 /* Anything in the toc ought to be aligned to 8 bytes.
8647 If not, don't mark as unused. */
8653 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8658 skip[val >> 3] = ref_from_discarded;
8661 if (elf_section_data (sec)->relocs != relstart)
8665 /* For largetoc loads of address constants, we can convert
8666 . addis rx,2,addr@got@ha
8667 . ld ry,addr@got@l(rx)
8669 . addis rx,2,addr@toc@ha
8670 . addi ry,rx,addr@toc@l
8671 when addr is within 2G of the toc pointer. This then means
8672 that the word storing "addr" in the toc is no longer needed. */
8674 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8675 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8676 && toc->reloc_count != 0)
8678 /* Read toc relocs. */
8679 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8681 if (toc_relocs == NULL)
8684 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
8686 enum elf_ppc64_reloc_type r_type;
8687 unsigned long r_symndx;
8689 struct elf_link_hash_entry *h;
8690 Elf_Internal_Sym *sym;
8693 r_type = ELF64_R_TYPE (rel->r_info);
8694 if (r_type != R_PPC64_ADDR64)
8697 r_symndx = ELF64_R_SYM (rel->r_info);
8698 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8703 || discarded_section (sym_sec))
8706 if (!SYMBOL_CALLS_LOCAL (info, h))
8711 if (h->type == STT_GNU_IFUNC)
8713 val = h->root.u.def.value;
8717 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8719 val = sym->st_value;
8721 val += rel->r_addend;
8722 val += sym_sec->output_section->vma + sym_sec->output_offset;
8724 /* We don't yet know the exact toc pointer value, but we
8725 know it will be somewhere in the toc section. Don't
8726 optimize if the difference from any possible toc
8727 pointer is outside [ff..f80008000, 7fff7fff]. */
8728 addr = toc->output_section->vma + TOC_BASE_OFF;
8729 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8732 addr = toc->output_section->vma + toc->output_section->rawsize;
8733 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8738 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8743 skip[rel->r_offset >> 3]
8744 |= can_optimize | ((rel - toc_relocs) << 2);
8751 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8755 if (local_syms != NULL
8756 && symtab_hdr->contents != (unsigned char *) local_syms)
8760 && elf_section_data (sec)->relocs != relstart)
8762 if (toc_relocs != NULL
8763 && elf_section_data (toc)->relocs != toc_relocs)
8770 /* Now check all kept sections that might reference the toc.
8771 Check the toc itself last. */
8772 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8775 sec = (sec == toc ? NULL
8776 : sec->next == NULL ? toc
8777 : sec->next == toc && toc->next ? toc->next
8782 if (sec->reloc_count == 0
8783 || discarded_section (sec)
8784 || get_opd_info (sec)
8785 || (sec->flags & SEC_ALLOC) == 0
8786 || (sec->flags & SEC_DEBUGGING) != 0)
8789 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8791 if (relstart == NULL)
8794 /* Mark toc entries referenced as used. */
8798 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8800 enum elf_ppc64_reloc_type r_type;
8801 unsigned long r_symndx;
8803 struct elf_link_hash_entry *h;
8804 Elf_Internal_Sym *sym;
8806 enum {no_check, check_lo, check_ha} insn_check;
8808 r_type = ELF64_R_TYPE (rel->r_info);
8812 insn_check = no_check;
8815 case R_PPC64_GOT_TLSLD16_HA:
8816 case R_PPC64_GOT_TLSGD16_HA:
8817 case R_PPC64_GOT_TPREL16_HA:
8818 case R_PPC64_GOT_DTPREL16_HA:
8819 case R_PPC64_GOT16_HA:
8820 case R_PPC64_TOC16_HA:
8821 insn_check = check_ha;
8824 case R_PPC64_GOT_TLSLD16_LO:
8825 case R_PPC64_GOT_TLSGD16_LO:
8826 case R_PPC64_GOT_TPREL16_LO_DS:
8827 case R_PPC64_GOT_DTPREL16_LO_DS:
8828 case R_PPC64_GOT16_LO:
8829 case R_PPC64_GOT16_LO_DS:
8830 case R_PPC64_TOC16_LO:
8831 case R_PPC64_TOC16_LO_DS:
8832 insn_check = check_lo;
8836 if (insn_check != no_check)
8838 bfd_vma off = rel->r_offset & ~3;
8839 unsigned char buf[4];
8842 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8847 insn = bfd_get_32 (ibfd, buf);
8848 if (insn_check == check_lo
8849 ? !ok_lo_toc_insn (insn)
8850 : ((insn & ((0x3f << 26) | 0x1f << 16))
8851 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8855 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8856 sprintf (str, "%#08x", insn);
8857 info->callbacks->einfo
8858 (_("%P: %H: toc optimization is not supported for"
8859 " %s instruction.\n"),
8860 ibfd, sec, rel->r_offset & ~3, str);
8867 case R_PPC64_TOC16_LO:
8868 case R_PPC64_TOC16_HI:
8869 case R_PPC64_TOC16_HA:
8870 case R_PPC64_TOC16_DS:
8871 case R_PPC64_TOC16_LO_DS:
8872 /* In case we're taking addresses of toc entries. */
8873 case R_PPC64_ADDR64:
8880 r_symndx = ELF64_R_SYM (rel->r_info);
8881 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8892 val = h->root.u.def.value;
8894 val = sym->st_value;
8895 val += rel->r_addend;
8897 if (val >= toc->size)
8900 if ((skip[val >> 3] & can_optimize) != 0)
8907 case R_PPC64_TOC16_HA:
8910 case R_PPC64_TOC16_LO_DS:
8911 off = rel->r_offset;
8912 off += (bfd_big_endian (ibfd) ? -2 : 3);
8913 if (!bfd_get_section_contents (ibfd, sec, &opc,
8919 if ((opc & (0x3f << 2)) == (58u << 2))
8924 /* Wrong sort of reloc, or not a ld. We may
8925 as well clear ref_from_discarded too. */
8932 /* For the toc section, we only mark as used if this
8933 entry itself isn't unused. */
8934 else if ((used[rel->r_offset >> 3]
8935 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
8938 /* Do all the relocs again, to catch reference
8947 if (elf_section_data (sec)->relocs != relstart)
8951 /* Merge the used and skip arrays. Assume that TOC
8952 doublewords not appearing as either used or unused belong
8953 to to an entry more than one doubleword in size. */
8954 for (drop = skip, keep = used, last = 0, some_unused = 0;
8955 drop < skip + (toc->size + 7) / 8;
8960 *drop &= ~ref_from_discarded;
8961 if ((*drop & can_optimize) != 0)
8965 else if ((*drop & ref_from_discarded) != 0)
8968 last = ref_from_discarded;
8978 bfd_byte *contents, *src;
8980 Elf_Internal_Sym *sym;
8981 bfd_boolean local_toc_syms = FALSE;
8983 /* Shuffle the toc contents, and at the same time convert the
8984 skip array from booleans into offsets. */
8985 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8988 elf_section_data (toc)->this_hdr.contents = contents;
8990 for (src = contents, off = 0, drop = skip;
8991 src < contents + toc->size;
8994 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8999 memcpy (src - off, src, 8);
9003 toc->rawsize = toc->size;
9004 toc->size = src - contents - off;
9006 /* Adjust addends for relocs against the toc section sym,
9007 and optimize any accesses we can. */
9008 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9010 if (sec->reloc_count == 0
9011 || discarded_section (sec))
9014 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9016 if (relstart == NULL)
9019 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9021 enum elf_ppc64_reloc_type r_type;
9022 unsigned long r_symndx;
9024 struct elf_link_hash_entry *h;
9027 r_type = ELF64_R_TYPE (rel->r_info);
9034 case R_PPC64_TOC16_LO:
9035 case R_PPC64_TOC16_HI:
9036 case R_PPC64_TOC16_HA:
9037 case R_PPC64_TOC16_DS:
9038 case R_PPC64_TOC16_LO_DS:
9039 case R_PPC64_ADDR64:
9043 r_symndx = ELF64_R_SYM (rel->r_info);
9044 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9052 val = h->root.u.def.value;
9055 val = sym->st_value;
9057 local_toc_syms = TRUE;
9060 val += rel->r_addend;
9062 if (val > toc->rawsize)
9064 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9066 else if ((skip[val >> 3] & can_optimize) != 0)
9068 Elf_Internal_Rela *tocrel
9069 = toc_relocs + (skip[val >> 3] >> 2);
9070 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9074 case R_PPC64_TOC16_HA:
9075 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9078 case R_PPC64_TOC16_LO_DS:
9079 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9083 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9085 info->callbacks->einfo
9086 (_("%P: %H: %s references "
9087 "optimized away TOC entry\n"),
9088 ibfd, sec, rel->r_offset,
9089 ppc64_elf_howto_table[r_type]->name);
9090 bfd_set_error (bfd_error_bad_value);
9093 rel->r_addend = tocrel->r_addend;
9094 elf_section_data (sec)->relocs = relstart;
9098 if (h != NULL || sym->st_value != 0)
9101 rel->r_addend -= skip[val >> 3];
9102 elf_section_data (sec)->relocs = relstart;
9105 if (elf_section_data (sec)->relocs != relstart)
9109 /* We shouldn't have local or global symbols defined in the TOC,
9110 but handle them anyway. */
9111 if (local_syms != NULL)
9112 for (sym = local_syms;
9113 sym < local_syms + symtab_hdr->sh_info;
9115 if (sym->st_value != 0
9116 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9120 if (sym->st_value > toc->rawsize)
9121 i = toc->rawsize >> 3;
9123 i = sym->st_value >> 3;
9125 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9128 (*_bfd_error_handler)
9129 (_("%s defined on removed toc entry"),
9130 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9133 while ((skip[i] & (ref_from_discarded | can_optimize)));
9134 sym->st_value = (bfd_vma) i << 3;
9137 sym->st_value -= skip[i];
9138 symtab_hdr->contents = (unsigned char *) local_syms;
9141 /* Adjust any global syms defined in this toc input section. */
9142 if (toc_inf.global_toc_syms)
9145 toc_inf.skip = skip;
9146 toc_inf.global_toc_syms = FALSE;
9147 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9151 if (toc->reloc_count != 0)
9153 Elf_Internal_Shdr *rel_hdr;
9154 Elf_Internal_Rela *wrel;
9157 /* Remove unused toc relocs, and adjust those we keep. */
9158 if (toc_relocs == NULL)
9159 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9161 if (toc_relocs == NULL)
9165 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
9166 if ((skip[rel->r_offset >> 3]
9167 & (ref_from_discarded | can_optimize)) == 0)
9169 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9170 wrel->r_info = rel->r_info;
9171 wrel->r_addend = rel->r_addend;
9174 else if (!dec_dynrel_count (rel->r_info, toc, info,
9175 &local_syms, NULL, NULL))
9178 elf_section_data (toc)->relocs = toc_relocs;
9179 toc->reloc_count = wrel - toc_relocs;
9180 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9181 sz = rel_hdr->sh_entsize;
9182 rel_hdr->sh_size = toc->reloc_count * sz;
9185 else if (toc_relocs != NULL
9186 && elf_section_data (toc)->relocs != toc_relocs)
9189 if (local_syms != NULL
9190 && symtab_hdr->contents != (unsigned char *) local_syms)
9192 if (!info->keep_memory)
9195 symtab_hdr->contents = (unsigned char *) local_syms;
9203 /* Return true iff input section I references the TOC using
9204 instructions limited to +/-32k offsets. */
9207 ppc64_elf_has_small_toc_reloc (asection *i)
9209 return (is_ppc64_elf (i->owner)
9210 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9213 /* Allocate space for one GOT entry. */
9216 allocate_got (struct elf_link_hash_entry *h,
9217 struct bfd_link_info *info,
9218 struct got_entry *gent)
9220 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9222 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9223 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9225 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9226 ? 2 : 1) * sizeof (Elf64_External_Rela);
9227 asection *got = ppc64_elf_tdata (gent->owner)->got;
9229 gent->got.offset = got->size;
9230 got->size += entsize;
9232 dyn = htab->elf.dynamic_sections_created;
9233 if (h->type == STT_GNU_IFUNC)
9235 htab->reliplt->size += rentsize;
9236 htab->got_reli_size += rentsize;
9238 else if ((info->shared
9239 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9240 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9241 || h->root.type != bfd_link_hash_undefweak))
9243 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
9244 relgot->size += rentsize;
9248 /* This function merges got entries in the same toc group. */
9251 merge_got_entries (struct got_entry **pent)
9253 struct got_entry *ent, *ent2;
9255 for (ent = *pent; ent != NULL; ent = ent->next)
9256 if (!ent->is_indirect)
9257 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9258 if (!ent2->is_indirect
9259 && ent2->addend == ent->addend
9260 && ent2->tls_type == ent->tls_type
9261 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9263 ent2->is_indirect = TRUE;
9264 ent2->got.ent = ent;
9268 /* Allocate space in .plt, .got and associated reloc sections for
9272 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
9274 struct bfd_link_info *info;
9275 struct ppc_link_hash_table *htab;
9277 struct ppc_link_hash_entry *eh;
9278 struct elf_dyn_relocs *p;
9279 struct got_entry **pgent, *gent;
9281 if (h->root.type == bfd_link_hash_indirect)
9284 info = (struct bfd_link_info *) inf;
9285 htab = ppc_hash_table (info);
9289 if ((htab->elf.dynamic_sections_created
9291 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9292 || h->type == STT_GNU_IFUNC)
9294 struct plt_entry *pent;
9295 bfd_boolean doneone = FALSE;
9296 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9297 if (pent->plt.refcount > 0)
9299 if (!htab->elf.dynamic_sections_created
9300 || h->dynindx == -1)
9303 pent->plt.offset = s->size;
9304 s->size += PLT_ENTRY_SIZE (htab);
9309 /* If this is the first .plt entry, make room for the special
9313 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
9315 pent->plt.offset = s->size;
9317 /* Make room for this entry. */
9318 s->size += PLT_ENTRY_SIZE (htab);
9320 /* Make room for the .glink code. */
9323 s->size += GLINK_CALL_STUB_SIZE;
9326 /* We need bigger stubs past index 32767. */
9327 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9334 /* We also need to make an entry in the .rela.plt section. */
9337 s->size += sizeof (Elf64_External_Rela);
9341 pent->plt.offset = (bfd_vma) -1;
9344 h->plt.plist = NULL;
9350 h->plt.plist = NULL;
9354 eh = (struct ppc_link_hash_entry *) h;
9355 /* Run through the TLS GD got entries first if we're changing them
9357 if ((eh->tls_mask & TLS_TPRELGD) != 0)
9358 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9359 if (gent->got.refcount > 0
9360 && (gent->tls_type & TLS_GD) != 0)
9362 /* This was a GD entry that has been converted to TPREL. If
9363 there happens to be a TPREL entry we can use that one. */
9364 struct got_entry *ent;
9365 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9366 if (ent->got.refcount > 0
9367 && (ent->tls_type & TLS_TPREL) != 0
9368 && ent->addend == gent->addend
9369 && ent->owner == gent->owner)
9371 gent->got.refcount = 0;
9375 /* If not, then we'll be using our own TPREL entry. */
9376 if (gent->got.refcount != 0)
9377 gent->tls_type = TLS_TLS | TLS_TPREL;
9380 /* Remove any list entry that won't generate a word in the GOT before
9381 we call merge_got_entries. Otherwise we risk merging to empty
9383 pgent = &h->got.glist;
9384 while ((gent = *pgent) != NULL)
9385 if (gent->got.refcount > 0)
9387 if ((gent->tls_type & TLS_LD) != 0
9390 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9391 *pgent = gent->next;
9394 pgent = &gent->next;
9397 *pgent = gent->next;
9399 if (!htab->do_multi_toc)
9400 merge_got_entries (&h->got.glist);
9402 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9403 if (!gent->is_indirect)
9405 /* Make sure this symbol is output as a dynamic symbol.
9406 Undefined weak syms won't yet be marked as dynamic,
9407 nor will all TLS symbols. */
9408 if (h->dynindx == -1
9410 && h->type != STT_GNU_IFUNC
9411 && htab->elf.dynamic_sections_created)
9413 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9417 if (!is_ppc64_elf (gent->owner))
9420 allocate_got (h, info, gent);
9423 if (eh->dyn_relocs == NULL
9424 || (!htab->elf.dynamic_sections_created
9425 && (h->type != STT_GNU_IFUNC
9426 || !htab->opd_abi)))
9429 /* In the shared -Bsymbolic case, discard space allocated for
9430 dynamic pc-relative relocs against symbols which turn out to be
9431 defined in regular objects. For the normal shared case, discard
9432 space for relocs that have become local due to symbol visibility
9437 /* Relocs that use pc_count are those that appear on a call insn,
9438 or certain REL relocs (see must_be_dyn_reloc) that can be
9439 generated via assembly. We want calls to protected symbols to
9440 resolve directly to the function rather than going via the plt.
9441 If people want function pointer comparisons to work as expected
9442 then they should avoid writing weird assembly. */
9443 if (SYMBOL_CALLS_LOCAL (info, h))
9445 struct elf_dyn_relocs **pp;
9447 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9449 p->count -= p->pc_count;
9458 /* Also discard relocs on undefined weak syms with non-default
9460 if (eh->dyn_relocs != NULL
9461 && h->root.type == bfd_link_hash_undefweak)
9463 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9464 eh->dyn_relocs = NULL;
9466 /* Make sure this symbol is output as a dynamic symbol.
9467 Undefined weak syms won't yet be marked as dynamic. */
9468 else if (h->dynindx == -1
9469 && !h->forced_local)
9471 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9476 else if (h->type == STT_GNU_IFUNC)
9478 if (!h->non_got_ref)
9479 eh->dyn_relocs = NULL;
9481 else if (ELIMINATE_COPY_RELOCS)
9483 /* For the non-shared case, discard space for relocs against
9484 symbols which turn out to need copy relocs or are not
9490 /* Make sure this symbol is output as a dynamic symbol.
9491 Undefined weak syms won't yet be marked as dynamic. */
9492 if (h->dynindx == -1
9493 && !h->forced_local)
9495 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9499 /* If that succeeded, we know we'll be keeping all the
9501 if (h->dynindx != -1)
9505 eh->dyn_relocs = NULL;
9510 /* Finally, allocate space. */
9511 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9513 asection *sreloc = elf_section_data (p->sec)->sreloc;
9514 if (eh->elf.type == STT_GNU_IFUNC)
9515 sreloc = htab->reliplt;
9516 sreloc->size += p->count * sizeof (Elf64_External_Rela);
9522 /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9523 to set up space for global entry stubs. These are put in glink,
9524 after the branch table. */
9527 size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
9529 struct bfd_link_info *info;
9530 struct ppc_link_hash_table *htab;
9531 struct plt_entry *pent;
9534 if (h->root.type == bfd_link_hash_indirect)
9537 if (!h->pointer_equality_needed)
9544 htab = ppc_hash_table (info);
9549 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9550 if (pent->plt.offset != (bfd_vma) -1
9551 && pent->addend == 0)
9553 s->size = (s->size + 15) & -16;
9560 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
9561 read-only sections. */
9564 maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9566 if (h->root.type == bfd_link_hash_indirect)
9569 if (readonly_dynrelocs (h))
9571 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9573 /* Not an error, just cut short the traversal. */
9579 /* Set the sizes of the dynamic sections. */
9582 ppc64_elf_size_dynamic_sections (bfd *output_bfd,
9583 struct bfd_link_info *info)
9585 struct ppc_link_hash_table *htab;
9590 struct got_entry *first_tlsld;
9592 htab = ppc_hash_table (info);
9596 dynobj = htab->elf.dynobj;
9600 if (htab->elf.dynamic_sections_created)
9602 /* Set the contents of the .interp section to the interpreter. */
9603 if (info->executable)
9605 s = bfd_get_linker_section (dynobj, ".interp");
9608 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
9609 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9613 /* Set up .got offsets for local syms, and space for local dynamic
9615 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9617 struct got_entry **lgot_ents;
9618 struct got_entry **end_lgot_ents;
9619 struct plt_entry **local_plt;
9620 struct plt_entry **end_local_plt;
9621 unsigned char *lgot_masks;
9622 bfd_size_type locsymcount;
9623 Elf_Internal_Shdr *symtab_hdr;
9625 if (!is_ppc64_elf (ibfd))
9628 for (s = ibfd->sections; s != NULL; s = s->next)
9630 struct ppc_dyn_relocs *p;
9632 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
9634 if (!bfd_is_abs_section (p->sec)
9635 && bfd_is_abs_section (p->sec->output_section))
9637 /* Input section has been discarded, either because
9638 it is a copy of a linkonce section or due to
9639 linker script /DISCARD/, so we'll be discarding
9642 else if (p->count != 0)
9644 asection *srel = elf_section_data (p->sec)->sreloc;
9646 srel = htab->reliplt;
9647 srel->size += p->count * sizeof (Elf64_External_Rela);
9648 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9649 info->flags |= DF_TEXTREL;
9654 lgot_ents = elf_local_got_ents (ibfd);
9658 symtab_hdr = &elf_symtab_hdr (ibfd);
9659 locsymcount = symtab_hdr->sh_info;
9660 end_lgot_ents = lgot_ents + locsymcount;
9661 local_plt = (struct plt_entry **) end_lgot_ents;
9662 end_local_plt = local_plt + locsymcount;
9663 lgot_masks = (unsigned char *) end_local_plt;
9664 s = ppc64_elf_tdata (ibfd)->got;
9665 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
9667 struct got_entry **pent, *ent;
9670 while ((ent = *pent) != NULL)
9671 if (ent->got.refcount > 0)
9673 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
9675 ppc64_tlsld_got (ibfd)->got.refcount += 1;
9680 unsigned int ent_size = 8;
9681 unsigned int rel_size = sizeof (Elf64_External_Rela);
9683 ent->got.offset = s->size;
9684 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
9689 s->size += ent_size;
9690 if ((*lgot_masks & PLT_IFUNC) != 0)
9692 htab->reliplt->size += rel_size;
9693 htab->got_reli_size += rel_size;
9695 else if (info->shared)
9697 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9698 srel->size += rel_size;
9707 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9708 for (; local_plt < end_local_plt; ++local_plt)
9710 struct plt_entry *ent;
9712 for (ent = *local_plt; ent != NULL; ent = ent->next)
9713 if (ent->plt.refcount > 0)
9716 ent->plt.offset = s->size;
9717 s->size += PLT_ENTRY_SIZE (htab);
9719 htab->reliplt->size += sizeof (Elf64_External_Rela);
9722 ent->plt.offset = (bfd_vma) -1;
9726 /* Allocate global sym .plt and .got entries, and space for global
9727 sym dynamic relocs. */
9728 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
9729 /* Stash the end of glink branch table. */
9730 if (htab->glink != NULL)
9731 htab->glink->rawsize = htab->glink->size;
9733 if (!htab->opd_abi && !info->shared)
9734 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
9737 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9739 struct got_entry *ent;
9741 if (!is_ppc64_elf (ibfd))
9744 ent = ppc64_tlsld_got (ibfd);
9745 if (ent->got.refcount > 0)
9747 if (!htab->do_multi_toc && first_tlsld != NULL)
9749 ent->is_indirect = TRUE;
9750 ent->got.ent = first_tlsld;
9754 if (first_tlsld == NULL)
9756 s = ppc64_elf_tdata (ibfd)->got;
9757 ent->got.offset = s->size;
9762 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9763 srel->size += sizeof (Elf64_External_Rela);
9768 ent->got.offset = (bfd_vma) -1;
9771 /* We now have determined the sizes of the various dynamic sections.
9772 Allocate memory for them. */
9774 for (s = dynobj->sections; s != NULL; s = s->next)
9776 if ((s->flags & SEC_LINKER_CREATED) == 0)
9779 if (s == htab->brlt || s == htab->relbrlt)
9780 /* These haven't been allocated yet; don't strip. */
9782 else if (s == htab->got
9786 || s == htab->dynbss)
9788 /* Strip this section if we don't need it; see the
9791 else if (s == htab->glink_eh_frame)
9793 if (!bfd_is_abs_section (s->output_section))
9794 /* Not sized yet. */
9797 else if (CONST_STRNEQ (s->name, ".rela"))
9801 if (s != htab->relplt)
9804 /* We use the reloc_count field as a counter if we need
9805 to copy relocs into the output file. */
9811 /* It's not one of our sections, so don't allocate space. */
9817 /* If we don't need this section, strip it from the
9818 output file. This is mostly to handle .rela.bss and
9819 .rela.plt. We must create both sections in
9820 create_dynamic_sections, because they must be created
9821 before the linker maps input sections to output
9822 sections. The linker does that before
9823 adjust_dynamic_symbol is called, and it is that
9824 function which decides whether anything needs to go
9825 into these sections. */
9826 s->flags |= SEC_EXCLUDE;
9830 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9833 /* Allocate memory for the section contents. We use bfd_zalloc
9834 here in case unused entries are not reclaimed before the
9835 section's contents are written out. This should not happen,
9836 but this way if it does we get a R_PPC64_NONE reloc in .rela
9837 sections instead of garbage.
9838 We also rely on the section contents being zero when writing
9840 s->contents = bfd_zalloc (dynobj, s->size);
9841 if (s->contents == NULL)
9845 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9847 if (!is_ppc64_elf (ibfd))
9850 s = ppc64_elf_tdata (ibfd)->got;
9851 if (s != NULL && s != htab->got)
9854 s->flags |= SEC_EXCLUDE;
9857 s->contents = bfd_zalloc (ibfd, s->size);
9858 if (s->contents == NULL)
9862 s = ppc64_elf_tdata (ibfd)->relgot;
9866 s->flags |= SEC_EXCLUDE;
9869 s->contents = bfd_zalloc (ibfd, s->size);
9870 if (s->contents == NULL)
9878 if (htab->elf.dynamic_sections_created)
9880 bfd_boolean tls_opt;
9882 /* Add some entries to the .dynamic section. We fill in the
9883 values later, in ppc64_elf_finish_dynamic_sections, but we
9884 must add the entries now so that we get the correct size for
9885 the .dynamic section. The DT_DEBUG entry is filled in by the
9886 dynamic linker and used by the debugger. */
9887 #define add_dynamic_entry(TAG, VAL) \
9888 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9890 if (info->executable)
9892 if (!add_dynamic_entry (DT_DEBUG, 0))
9896 if (htab->plt != NULL && htab->plt->size != 0)
9898 if (!add_dynamic_entry (DT_PLTGOT, 0)
9899 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9900 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9901 || !add_dynamic_entry (DT_JMPREL, 0)
9902 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
9906 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
9908 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9909 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
9913 tls_opt = (!htab->no_tls_get_addr_opt
9914 && htab->tls_get_addr_fd != NULL
9915 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
9916 if (tls_opt || !htab->opd_abi)
9918 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
9924 if (!add_dynamic_entry (DT_RELA, 0)
9925 || !add_dynamic_entry (DT_RELASZ, 0)
9926 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
9929 /* If any dynamic relocs apply to a read-only section,
9930 then we need a DT_TEXTREL entry. */
9931 if ((info->flags & DF_TEXTREL) == 0)
9932 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
9934 if ((info->flags & DF_TEXTREL) != 0)
9936 if (!add_dynamic_entry (DT_TEXTREL, 0))
9941 #undef add_dynamic_entry
9946 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
9949 ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
9951 if (h->plt.plist != NULL
9953 && !h->pointer_equality_needed)
9956 return _bfd_elf_hash_symbol (h);
9959 /* Determine the type of stub needed, if any, for a call. */
9961 static inline enum ppc_stub_type
9962 ppc_type_of_stub (asection *input_sec,
9963 const Elf_Internal_Rela *rel,
9964 struct ppc_link_hash_entry **hash,
9965 struct plt_entry **plt_ent,
9966 bfd_vma destination,
9967 unsigned long local_off)
9969 struct ppc_link_hash_entry *h = *hash;
9971 bfd_vma branch_offset;
9972 bfd_vma max_branch_offset;
9973 enum elf_ppc64_reloc_type r_type;
9977 struct plt_entry *ent;
9978 struct ppc_link_hash_entry *fdh = h;
9980 && h->oh->is_func_descriptor)
9982 fdh = ppc_follow_link (h->oh);
9986 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9987 if (ent->addend == rel->r_addend
9988 && ent->plt.offset != (bfd_vma) -1)
9991 return ppc_stub_plt_call;
9994 /* Here, we know we don't have a plt entry. If we don't have a
9995 either a defined function descriptor or a defined entry symbol
9996 in a regular object file, then it is pointless trying to make
9997 any other type of stub. */
9998 if (!is_static_defined (&fdh->elf)
9999 && !is_static_defined (&h->elf))
10000 return ppc_stub_none;
10002 else if (elf_local_got_ents (input_sec->owner) != NULL)
10004 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10005 struct plt_entry **local_plt = (struct plt_entry **)
10006 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10007 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10009 if (local_plt[r_symndx] != NULL)
10011 struct plt_entry *ent;
10013 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10014 if (ent->addend == rel->r_addend
10015 && ent->plt.offset != (bfd_vma) -1)
10018 return ppc_stub_plt_call;
10023 /* Determine where the call point is. */
10024 location = (input_sec->output_offset
10025 + input_sec->output_section->vma
10028 branch_offset = destination - location;
10029 r_type = ELF64_R_TYPE (rel->r_info);
10031 /* Determine if a long branch stub is needed. */
10032 max_branch_offset = 1 << 25;
10033 if (r_type != R_PPC64_REL24)
10034 max_branch_offset = 1 << 15;
10036 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
10037 /* We need a stub. Figure out whether a long_branch or plt_branch
10038 is needed later. */
10039 return ppc_stub_long_branch;
10041 return ppc_stub_none;
10044 /* With power7 weakly ordered memory model, it is possible for ld.so
10045 to update a plt entry in one thread and have another thread see a
10046 stale zero toc entry. To avoid this we need some sort of acquire
10047 barrier in the call stub. One solution is to make the load of the
10048 toc word seem to appear to depend on the load of the function entry
10049 word. Another solution is to test for r2 being zero, and branch to
10050 the appropriate glink entry if so.
10052 . fake dep barrier compare
10053 . ld 12,xxx(2) ld 12,xxx(2)
10054 . mtctr 12 mtctr 12
10055 . xor 11,12,12 ld 2,xxx+8(2)
10056 . add 2,2,11 cmpldi 2,0
10057 . ld 2,xxx+8(2) bnectr+
10058 . bctr b <glink_entry>
10060 The solution involving the compare turns out to be faster, so
10061 that's what we use unless the branch won't reach. */
10063 #define ALWAYS_USE_FAKE_DEP 0
10064 #define ALWAYS_EMIT_R2SAVE 0
10066 #define PPC_LO(v) ((v) & 0xffff)
10067 #define PPC_HI(v) (((v) >> 16) & 0xffff)
10068 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
10070 static inline unsigned int
10071 plt_stub_size (struct ppc_link_hash_table *htab,
10072 struct ppc_stub_hash_entry *stub_entry,
10075 unsigned size = 12;
10077 if (ALWAYS_EMIT_R2SAVE
10078 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10080 if (PPC_HA (off) != 0)
10085 if (htab->plt_static_chain)
10087 if (htab->plt_thread_safe)
10089 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
10092 if (stub_entry->h != NULL
10093 && (stub_entry->h == htab->tls_get_addr_fd
10094 || stub_entry->h == htab->tls_get_addr)
10095 && !htab->no_tls_get_addr_opt)
10100 /* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10101 then return the padding needed to do so. */
10102 static inline unsigned int
10103 plt_stub_pad (struct ppc_link_hash_table *htab,
10104 struct ppc_stub_hash_entry *stub_entry,
10107 int stub_align = 1 << htab->plt_stub_align;
10108 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10109 bfd_vma stub_off = stub_entry->stub_sec->size;
10111 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10112 > (stub_size & -stub_align))
10113 return stub_align - (stub_off & (stub_align - 1));
10117 /* Build a .plt call stub. */
10119 static inline bfd_byte *
10120 build_plt_stub (struct ppc_link_hash_table *htab,
10121 struct ppc_stub_hash_entry *stub_entry,
10122 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10124 bfd *obfd = htab->stub_bfd;
10125 bfd_boolean plt_load_toc = htab->opd_abi;
10126 bfd_boolean plt_static_chain = htab->plt_static_chain;
10127 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
10128 bfd_boolean use_fake_dep = plt_thread_safe;
10129 bfd_vma cmp_branch_off = 0;
10131 if (!ALWAYS_USE_FAKE_DEP
10134 && !(stub_entry->h != NULL
10135 && (stub_entry->h == htab->tls_get_addr_fd
10136 || stub_entry->h == htab->tls_get_addr)
10137 && !htab->no_tls_get_addr_opt))
10139 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
10140 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10141 / PLT_ENTRY_SIZE (htab));
10142 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10145 if (pltindex > 32768)
10146 glinkoff += (pltindex - 32768) * 4;
10148 + htab->glink->output_offset
10149 + htab->glink->output_section->vma);
10150 from = (p - stub_entry->stub_sec->contents
10151 + 4 * (ALWAYS_EMIT_R2SAVE
10152 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10153 + 4 * (PPC_HA (offset) != 0)
10154 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10155 != PPC_HA (offset))
10156 + 4 * (plt_static_chain != 0)
10158 + stub_entry->stub_sec->output_offset
10159 + stub_entry->stub_sec->output_section->vma);
10160 cmp_branch_off = to - from;
10161 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10164 if (PPC_HA (offset) != 0)
10168 if (ALWAYS_EMIT_R2SAVE
10169 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10170 r[0].r_offset += 4;
10171 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10172 r[1].r_offset = r[0].r_offset + 4;
10173 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10174 r[1].r_addend = r[0].r_addend;
10177 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10179 r[2].r_offset = r[1].r_offset + 4;
10180 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10181 r[2].r_addend = r[0].r_addend;
10185 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10186 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10187 r[2].r_addend = r[0].r_addend + 8;
10188 if (plt_static_chain)
10190 r[3].r_offset = r[2].r_offset + 4;
10191 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10192 r[3].r_addend = r[0].r_addend + 16;
10197 if (ALWAYS_EMIT_R2SAVE
10198 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10199 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10200 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10201 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10203 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10205 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
10208 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10213 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10214 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10216 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10217 if (plt_static_chain)
10218 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
10225 if (ALWAYS_EMIT_R2SAVE
10226 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10227 r[0].r_offset += 4;
10228 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10231 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10233 r[1].r_offset = r[0].r_offset + 4;
10234 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10235 r[1].r_addend = r[0].r_addend;
10239 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10240 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10241 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10242 if (plt_static_chain)
10244 r[2].r_offset = r[1].r_offset + 4;
10245 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10246 r[2].r_addend = r[0].r_addend + 8;
10251 if (ALWAYS_EMIT_R2SAVE
10252 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10253 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
10254 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
10256 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
10258 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10261 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
10266 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10267 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10269 if (plt_static_chain)
10270 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10271 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
10274 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
10276 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10277 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
10278 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
10281 bfd_put_32 (obfd, BCTR, p), p += 4;
10285 /* Build a special .plt call stub for __tls_get_addr. */
10287 #define LD_R11_0R3 0xe9630000
10288 #define LD_R12_0R3 0xe9830000
10289 #define MR_R0_R3 0x7c601b78
10290 #define CMPDI_R11_0 0x2c2b0000
10291 #define ADD_R3_R12_R13 0x7c6c6a14
10292 #define BEQLR 0x4d820020
10293 #define MR_R3_R0 0x7c030378
10294 #define STD_R11_0R1 0xf9610000
10295 #define BCTRL 0x4e800421
10296 #define LD_R11_0R1 0xe9610000
10297 #define MTLR_R11 0x7d6803a6
10299 static inline bfd_byte *
10300 build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10301 struct ppc_stub_hash_entry *stub_entry,
10302 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10304 bfd *obfd = htab->stub_bfd;
10306 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10307 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10308 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10309 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10310 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10311 bfd_put_32 (obfd, BEQLR, p), p += 4;
10312 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10313 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
10314 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10317 r[0].r_offset += 9 * 4;
10318 p = build_plt_stub (htab, stub_entry, p, offset, r);
10319 bfd_put_32 (obfd, BCTRL, p - 4);
10321 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10322 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
10323 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10324 bfd_put_32 (obfd, BLR, p), p += 4;
10329 static Elf_Internal_Rela *
10330 get_relocs (asection *sec, int count)
10332 Elf_Internal_Rela *relocs;
10333 struct bfd_elf_section_data *elfsec_data;
10335 elfsec_data = elf_section_data (sec);
10336 relocs = elfsec_data->relocs;
10337 if (relocs == NULL)
10339 bfd_size_type relsize;
10340 relsize = sec->reloc_count * sizeof (*relocs);
10341 relocs = bfd_alloc (sec->owner, relsize);
10342 if (relocs == NULL)
10344 elfsec_data->relocs = relocs;
10345 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10346 sizeof (Elf_Internal_Shdr));
10347 if (elfsec_data->rela.hdr == NULL)
10349 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10350 * sizeof (Elf64_External_Rela));
10351 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
10352 sec->reloc_count = 0;
10354 relocs += sec->reloc_count;
10355 sec->reloc_count += count;
10360 get_r2off (struct bfd_link_info *info,
10361 struct ppc_stub_hash_entry *stub_entry)
10363 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10364 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10368 /* Support linking -R objects. Get the toc pointer from the
10371 if (!htab->opd_abi)
10373 asection *opd = stub_entry->h->elf.root.u.def.section;
10374 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10376 if (strcmp (opd->name, ".opd") != 0
10377 || opd->reloc_count != 0)
10379 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
10380 stub_entry->h->elf.root.root.string);
10381 bfd_set_error (bfd_error_bad_value);
10384 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10386 r2off = bfd_get_64 (opd->owner, buf);
10387 r2off -= elf_gp (info->output_bfd);
10389 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10394 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10396 struct ppc_stub_hash_entry *stub_entry;
10397 struct ppc_branch_hash_entry *br_entry;
10398 struct bfd_link_info *info;
10399 struct ppc_link_hash_table *htab;
10404 Elf_Internal_Rela *r;
10407 /* Massage our args to the form they really have. */
10408 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10411 htab = ppc_hash_table (info);
10415 /* Make a note of the offset within the stubs for this entry. */
10416 stub_entry->stub_offset = stub_entry->stub_sec->size;
10417 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
10419 htab->stub_count[stub_entry->stub_type - 1] += 1;
10420 switch (stub_entry->stub_type)
10422 case ppc_stub_long_branch:
10423 case ppc_stub_long_branch_r2off:
10424 /* Branches are relative. This is where we are going to. */
10425 dest = (stub_entry->target_value
10426 + stub_entry->target_section->output_offset
10427 + stub_entry->target_section->output_section->vma);
10428 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10431 /* And this is where we are coming from. */
10432 off -= (stub_entry->stub_offset
10433 + stub_entry->stub_sec->output_offset
10434 + stub_entry->stub_sec->output_section->vma);
10437 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10439 bfd_vma r2off = get_r2off (info, stub_entry);
10443 htab->stub_error = TRUE;
10446 bfd_put_32 (htab->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10449 if (PPC_HA (r2off) != 0)
10452 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10455 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10459 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
10461 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10463 info->callbacks->einfo
10464 (_("%P: long branch stub `%s' offset overflow\n"),
10465 stub_entry->root.string);
10466 htab->stub_error = TRUE;
10470 if (info->emitrelocations)
10472 r = get_relocs (stub_entry->stub_sec, 1);
10475 r->r_offset = loc - stub_entry->stub_sec->contents;
10476 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10477 r->r_addend = dest;
10478 if (stub_entry->h != NULL)
10480 struct elf_link_hash_entry **hashes;
10481 unsigned long symndx;
10482 struct ppc_link_hash_entry *h;
10484 hashes = elf_sym_hashes (htab->stub_bfd);
10485 if (hashes == NULL)
10487 bfd_size_type hsize;
10489 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
10490 hashes = bfd_zalloc (htab->stub_bfd, hsize);
10491 if (hashes == NULL)
10493 elf_sym_hashes (htab->stub_bfd) = hashes;
10494 htab->stub_globals = 1;
10496 symndx = htab->stub_globals++;
10498 hashes[symndx] = &h->elf;
10499 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10500 if (h->oh != NULL && h->oh->is_func)
10501 h = ppc_follow_link (h->oh);
10502 if (h->elf.root.u.def.section != stub_entry->target_section)
10503 /* H is an opd symbol. The addend must be zero. */
10507 off = (h->elf.root.u.def.value
10508 + h->elf.root.u.def.section->output_offset
10509 + h->elf.root.u.def.section->output_section->vma);
10510 r->r_addend -= off;
10516 case ppc_stub_plt_branch:
10517 case ppc_stub_plt_branch_r2off:
10518 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10519 stub_entry->root.string + 9,
10521 if (br_entry == NULL)
10523 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
10524 stub_entry->root.string);
10525 htab->stub_error = TRUE;
10529 dest = (stub_entry->target_value
10530 + stub_entry->target_section->output_offset
10531 + stub_entry->target_section->output_section->vma);
10532 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10533 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10535 bfd_put_64 (htab->brlt->owner, dest,
10536 htab->brlt->contents + br_entry->offset);
10538 if (br_entry->iter == htab->stub_iteration)
10540 br_entry->iter = 0;
10542 if (htab->relbrlt != NULL)
10544 /* Create a reloc for the branch lookup table entry. */
10545 Elf_Internal_Rela rela;
10548 rela.r_offset = (br_entry->offset
10549 + htab->brlt->output_offset
10550 + htab->brlt->output_section->vma);
10551 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10552 rela.r_addend = dest;
10554 rl = htab->relbrlt->contents;
10555 rl += (htab->relbrlt->reloc_count++
10556 * sizeof (Elf64_External_Rela));
10557 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10559 else if (info->emitrelocations)
10561 r = get_relocs (htab->brlt, 1);
10564 /* brlt, being SEC_LINKER_CREATED does not go through the
10565 normal reloc processing. Symbols and offsets are not
10566 translated from input file to output file form, so
10567 set up the offset per the output file. */
10568 r->r_offset = (br_entry->offset
10569 + htab->brlt->output_offset
10570 + htab->brlt->output_section->vma);
10571 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10572 r->r_addend = dest;
10576 dest = (br_entry->offset
10577 + htab->brlt->output_offset
10578 + htab->brlt->output_section->vma);
10581 - elf_gp (htab->brlt->output_section->owner)
10582 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10584 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10586 info->callbacks->einfo
10587 (_("%P: linkage table error against `%T'\n"),
10588 stub_entry->root.string);
10589 bfd_set_error (bfd_error_bad_value);
10590 htab->stub_error = TRUE;
10594 if (info->emitrelocations)
10596 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10599 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10600 if (bfd_big_endian (info->output_bfd))
10601 r[0].r_offset += 2;
10602 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off
10604 r[0].r_offset += 4;
10605 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10606 r[0].r_addend = dest;
10607 if (PPC_HA (off) != 0)
10609 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10610 r[1].r_offset = r[0].r_offset + 4;
10611 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10612 r[1].r_addend = r[0].r_addend;
10616 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off
10619 if (PPC_HA (off) != 0)
10622 bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc);
10624 bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc);
10629 bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10634 bfd_vma r2off = get_r2off (info, stub_entry);
10638 htab->stub_error = TRUE;
10642 bfd_put_32 (htab->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
10645 if (PPC_HA (off) != 0)
10648 bfd_put_32 (htab->stub_bfd, ADDIS_R11_R2 | PPC_HA (off), loc);
10650 bfd_put_32 (htab->stub_bfd, LD_R12_0R11 | PPC_LO (off), loc);
10655 bfd_put_32 (htab->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
10659 if (PPC_HA (r2off) != 0)
10662 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10665 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
10668 bfd_put_32 (htab->stub_bfd, MTCTR_R12, loc);
10670 bfd_put_32 (htab->stub_bfd, BCTR, loc);
10673 case ppc_stub_plt_call:
10674 case ppc_stub_plt_call_r2save:
10675 if (stub_entry->h != NULL
10676 && stub_entry->h->is_func_descriptor
10677 && stub_entry->h->oh != NULL)
10679 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10681 /* If the old-ABI "dot-symbol" is undefined make it weak so
10682 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10683 FIXME: We used to define the symbol on one of the call
10684 stubs instead, which is why we test symbol section id
10685 against htab->top_id in various places. Likely all
10686 these checks could now disappear. */
10687 if (fh->elf.root.type == bfd_link_hash_undefined)
10688 fh->elf.root.type = bfd_link_hash_undefweak;
10689 /* Stop undo_symbol_twiddle changing it back to undefined. */
10690 fh->was_undefined = 0;
10693 /* Now build the stub. */
10694 dest = stub_entry->plt_ent->plt.offset & ~1;
10695 if (dest >= (bfd_vma) -2)
10699 if (!htab->elf.dynamic_sections_created
10700 || stub_entry->h == NULL
10701 || stub_entry->h->elf.dynindx == -1)
10704 dest += plt->output_offset + plt->output_section->vma;
10706 if (stub_entry->h == NULL
10707 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10709 Elf_Internal_Rela rela;
10712 rela.r_offset = dest;
10714 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10716 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
10717 rela.r_addend = (stub_entry->target_value
10718 + stub_entry->target_section->output_offset
10719 + stub_entry->target_section->output_section->vma);
10721 rl = (htab->reliplt->contents
10722 + (htab->reliplt->reloc_count++
10723 * sizeof (Elf64_External_Rela)));
10724 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
10725 stub_entry->plt_ent->plt.offset |= 1;
10729 - elf_gp (plt->output_section->owner)
10730 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10732 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
10734 info->callbacks->einfo
10735 (_("%P: linkage table error against `%T'\n"),
10736 stub_entry->h != NULL
10737 ? stub_entry->h->elf.root.root.string
10739 bfd_set_error (bfd_error_bad_value);
10740 htab->stub_error = TRUE;
10744 if (htab->plt_stub_align != 0)
10746 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10748 stub_entry->stub_sec->size += pad;
10749 stub_entry->stub_offset = stub_entry->stub_sec->size;
10754 if (info->emitrelocations)
10756 r = get_relocs (stub_entry->stub_sec,
10758 + (PPC_HA (off) != 0)
10759 + (htab->plt_static_chain
10760 && PPC_HA (off + 16) == PPC_HA (off))));
10763 r[0].r_offset = loc - stub_entry->stub_sec->contents;
10764 if (bfd_big_endian (info->output_bfd))
10765 r[0].r_offset += 2;
10766 r[0].r_addend = dest;
10768 if (stub_entry->h != NULL
10769 && (stub_entry->h == htab->tls_get_addr_fd
10770 || stub_entry->h == htab->tls_get_addr)
10771 && !htab->no_tls_get_addr_opt)
10772 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
10774 p = build_plt_stub (htab, stub_entry, loc, off, r);
10783 stub_entry->stub_sec->size += size;
10785 if (htab->emit_stub_syms)
10787 struct elf_link_hash_entry *h;
10790 const char *const stub_str[] = { "long_branch",
10791 "long_branch_r2off",
10793 "plt_branch_r2off",
10797 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10798 len2 = strlen (stub_entry->root.string);
10799 name = bfd_malloc (len1 + len2 + 2);
10802 memcpy (name, stub_entry->root.string, 9);
10803 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10804 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10805 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
10808 if (h->root.type == bfd_link_hash_new)
10810 h->root.type = bfd_link_hash_defined;
10811 h->root.u.def.section = stub_entry->stub_sec;
10812 h->root.u.def.value = stub_entry->stub_offset;
10813 h->ref_regular = 1;
10814 h->def_regular = 1;
10815 h->ref_regular_nonweak = 1;
10816 h->forced_local = 1;
10824 /* As above, but don't actually build the stub. Just bump offset so
10825 we know stub section sizes, and select plt_branch stubs where
10826 long_branch stubs won't do. */
10829 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
10831 struct ppc_stub_hash_entry *stub_entry;
10832 struct bfd_link_info *info;
10833 struct ppc_link_hash_table *htab;
10837 /* Massage our args to the form they really have. */
10838 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
10841 htab = ppc_hash_table (info);
10845 if (stub_entry->stub_type == ppc_stub_plt_call
10846 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10849 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
10850 if (off >= (bfd_vma) -2)
10853 if (!htab->elf.dynamic_sections_created
10854 || stub_entry->h == NULL
10855 || stub_entry->h->elf.dynindx == -1)
10857 off += (plt->output_offset
10858 + plt->output_section->vma
10859 - elf_gp (plt->output_section->owner)
10860 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10862 size = plt_stub_size (htab, stub_entry, off);
10863 if (htab->plt_stub_align)
10864 size += plt_stub_pad (htab, stub_entry, off);
10865 if (info->emitrelocations)
10867 stub_entry->stub_sec->reloc_count
10868 += ((PPC_HA (off) != 0)
10870 ? 2 + (htab->plt_static_chain
10871 && PPC_HA (off + 16) == PPC_HA (off))
10873 stub_entry->stub_sec->flags |= SEC_RELOC;
10878 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10881 bfd_vma local_off = 0;
10883 off = (stub_entry->target_value
10884 + stub_entry->target_section->output_offset
10885 + stub_entry->target_section->output_section->vma);
10886 off -= (stub_entry->stub_sec->size
10887 + stub_entry->stub_sec->output_offset
10888 + stub_entry->stub_sec->output_section->vma);
10890 /* Reset the stub type from the plt variant in case we now
10891 can reach with a shorter stub. */
10892 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10893 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10896 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10898 r2off = get_r2off (info, stub_entry);
10899 if (r2off == 0 && htab->opd_abi)
10901 htab->stub_error = TRUE;
10905 if (PPC_HA (r2off) != 0)
10910 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10912 /* If the branch offset if too big, use a ppc_stub_plt_branch.
10913 Do the same for -R objects without function descriptors. */
10914 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
10915 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
10918 struct ppc_branch_hash_entry *br_entry;
10920 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10921 stub_entry->root.string + 9,
10923 if (br_entry == NULL)
10925 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
10926 stub_entry->root.string);
10927 htab->stub_error = TRUE;
10931 if (br_entry->iter != htab->stub_iteration)
10933 br_entry->iter = htab->stub_iteration;
10934 br_entry->offset = htab->brlt->size;
10935 htab->brlt->size += 8;
10937 if (htab->relbrlt != NULL)
10938 htab->relbrlt->size += sizeof (Elf64_External_Rela);
10939 else if (info->emitrelocations)
10941 htab->brlt->reloc_count += 1;
10942 htab->brlt->flags |= SEC_RELOC;
10946 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
10947 off = (br_entry->offset
10948 + htab->brlt->output_offset
10949 + htab->brlt->output_section->vma
10950 - elf_gp (htab->brlt->output_section->owner)
10951 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10953 if (info->emitrelocations)
10955 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10956 stub_entry->stub_sec->flags |= SEC_RELOC;
10959 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off
10963 if (PPC_HA (off) != 0)
10969 if (PPC_HA (off) != 0)
10972 if (PPC_HA (r2off) != 0)
10976 else if (info->emitrelocations)
10978 stub_entry->stub_sec->reloc_count += 1;
10979 stub_entry->stub_sec->flags |= SEC_RELOC;
10983 stub_entry->stub_sec->size += size;
10987 /* Set up various things so that we can make a list of input sections
10988 for each output section included in the link. Returns -1 on error,
10989 0 when no stubs will be needed, and 1 on success. */
10992 ppc64_elf_setup_section_lists
10993 (struct bfd_link_info *info,
10994 asection *(*add_stub_section) (const char *, asection *),
10995 void (*layout_sections_again) (void))
10998 int top_id, top_index, id;
11000 asection **input_list;
11002 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11006 /* Stash our params away. */
11007 htab->add_stub_section = add_stub_section;
11008 htab->layout_sections_again = layout_sections_again;
11010 /* Find the top input section id. */
11011 for (input_bfd = info->input_bfds, top_id = 3;
11013 input_bfd = input_bfd->link_next)
11015 for (section = input_bfd->sections;
11017 section = section->next)
11019 if (top_id < section->id)
11020 top_id = section->id;
11024 htab->top_id = top_id;
11025 amt = sizeof (struct map_stub) * (top_id + 1);
11026 htab->stub_group = bfd_zmalloc (amt);
11027 if (htab->stub_group == NULL)
11030 /* Set toc_off for com, und, abs and ind sections. */
11031 for (id = 0; id < 3; id++)
11032 htab->stub_group[id].toc_off = TOC_BASE_OFF;
11034 /* We can't use output_bfd->section_count here to find the top output
11035 section index as some sections may have been removed, and
11036 strip_excluded_output_sections doesn't renumber the indices. */
11037 for (section = info->output_bfd->sections, top_index = 0;
11039 section = section->next)
11041 if (top_index < section->index)
11042 top_index = section->index;
11045 htab->top_index = top_index;
11046 amt = sizeof (asection *) * (top_index + 1);
11047 input_list = bfd_zmalloc (amt);
11048 htab->input_list = input_list;
11049 if (input_list == NULL)
11055 /* Set up for first pass at multitoc partitioning. */
11058 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11060 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11062 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
11063 htab->toc_bfd = NULL;
11064 htab->toc_first_sec = NULL;
11067 /* The linker repeatedly calls this function for each TOC input section
11068 and linker generated GOT section. Group input bfds such that the toc
11069 within a group is less than 64k in size. */
11072 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
11074 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11075 bfd_vma addr, off, limit;
11080 if (!htab->second_toc_pass)
11082 /* Keep track of the first .toc or .got section for this input bfd. */
11083 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11087 htab->toc_bfd = isec->owner;
11088 htab->toc_first_sec = isec;
11091 addr = isec->output_offset + isec->output_section->vma;
11092 off = addr - htab->toc_curr;
11093 limit = 0x80008000;
11094 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11096 if (off + isec->size > limit)
11098 addr = (htab->toc_first_sec->output_offset
11099 + htab->toc_first_sec->output_section->vma);
11100 htab->toc_curr = addr;
11103 /* toc_curr is the base address of this toc group. Set elf_gp
11104 for the input section to be the offset relative to the
11105 output toc base plus 0x8000. Making the input elf_gp an
11106 offset allows us to move the toc as a whole without
11107 recalculating input elf_gp. */
11108 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11109 off += TOC_BASE_OFF;
11111 /* Die if someone uses a linker script that doesn't keep input
11112 file .toc and .got together. */
11114 && elf_gp (isec->owner) != 0
11115 && elf_gp (isec->owner) != off)
11118 elf_gp (isec->owner) = off;
11122 /* During the second pass toc_first_sec points to the start of
11123 a toc group, and toc_curr is used to track the old elf_gp.
11124 We use toc_bfd to ensure we only look at each bfd once. */
11125 if (htab->toc_bfd == isec->owner)
11127 htab->toc_bfd = isec->owner;
11129 if (htab->toc_first_sec == NULL
11130 || htab->toc_curr != elf_gp (isec->owner))
11132 htab->toc_curr = elf_gp (isec->owner);
11133 htab->toc_first_sec = isec;
11135 addr = (htab->toc_first_sec->output_offset
11136 + htab->toc_first_sec->output_section->vma);
11137 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11138 elf_gp (isec->owner) = off;
11143 /* Called via elf_link_hash_traverse to merge GOT entries for global
11147 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11149 if (h->root.type == bfd_link_hash_indirect)
11152 merge_got_entries (&h->got.glist);
11157 /* Called via elf_link_hash_traverse to allocate GOT entries for global
11161 reallocate_got (struct elf_link_hash_entry *h, void *inf)
11163 struct got_entry *gent;
11165 if (h->root.type == bfd_link_hash_indirect)
11168 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11169 if (!gent->is_indirect)
11170 allocate_got (h, (struct bfd_link_info *) inf, gent);
11174 /* Called on the first multitoc pass after the last call to
11175 ppc64_elf_next_toc_section. This function removes duplicate GOT
11179 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
11181 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11182 struct bfd *ibfd, *ibfd2;
11183 bfd_boolean done_something;
11185 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
11187 if (!htab->do_multi_toc)
11190 /* Merge global sym got entries within a toc group. */
11191 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11193 /* And tlsld_got. */
11194 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11196 struct got_entry *ent, *ent2;
11198 if (!is_ppc64_elf (ibfd))
11201 ent = ppc64_tlsld_got (ibfd);
11202 if (!ent->is_indirect
11203 && ent->got.offset != (bfd_vma) -1)
11205 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
11207 if (!is_ppc64_elf (ibfd2))
11210 ent2 = ppc64_tlsld_got (ibfd2);
11211 if (!ent2->is_indirect
11212 && ent2->got.offset != (bfd_vma) -1
11213 && elf_gp (ibfd2) == elf_gp (ibfd))
11215 ent2->is_indirect = TRUE;
11216 ent2->got.ent = ent;
11222 /* Zap sizes of got sections. */
11223 htab->reliplt->rawsize = htab->reliplt->size;
11224 htab->reliplt->size -= htab->got_reli_size;
11225 htab->got_reli_size = 0;
11227 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11229 asection *got, *relgot;
11231 if (!is_ppc64_elf (ibfd))
11234 got = ppc64_elf_tdata (ibfd)->got;
11237 got->rawsize = got->size;
11239 relgot = ppc64_elf_tdata (ibfd)->relgot;
11240 relgot->rawsize = relgot->size;
11245 /* Now reallocate the got, local syms first. We don't need to
11246 allocate section contents again since we never increase size. */
11247 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11249 struct got_entry **lgot_ents;
11250 struct got_entry **end_lgot_ents;
11251 struct plt_entry **local_plt;
11252 struct plt_entry **end_local_plt;
11253 unsigned char *lgot_masks;
11254 bfd_size_type locsymcount;
11255 Elf_Internal_Shdr *symtab_hdr;
11258 if (!is_ppc64_elf (ibfd))
11261 lgot_ents = elf_local_got_ents (ibfd);
11265 symtab_hdr = &elf_symtab_hdr (ibfd);
11266 locsymcount = symtab_hdr->sh_info;
11267 end_lgot_ents = lgot_ents + locsymcount;
11268 local_plt = (struct plt_entry **) end_lgot_ents;
11269 end_local_plt = local_plt + locsymcount;
11270 lgot_masks = (unsigned char *) end_local_plt;
11271 s = ppc64_elf_tdata (ibfd)->got;
11272 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11274 struct got_entry *ent;
11276 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
11278 unsigned int ent_size = 8;
11279 unsigned int rel_size = sizeof (Elf64_External_Rela);
11281 ent->got.offset = s->size;
11282 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
11287 s->size += ent_size;
11288 if ((*lgot_masks & PLT_IFUNC) != 0)
11290 htab->reliplt->size += rel_size;
11291 htab->got_reli_size += rel_size;
11293 else if (info->shared)
11295 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11296 srel->size += rel_size;
11302 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11304 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11306 struct got_entry *ent;
11308 if (!is_ppc64_elf (ibfd))
11311 ent = ppc64_tlsld_got (ibfd);
11312 if (!ent->is_indirect
11313 && ent->got.offset != (bfd_vma) -1)
11315 asection *s = ppc64_elf_tdata (ibfd)->got;
11316 ent->got.offset = s->size;
11320 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11321 srel->size += sizeof (Elf64_External_Rela);
11326 done_something = htab->reliplt->rawsize != htab->reliplt->size;
11327 if (!done_something)
11328 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
11332 if (!is_ppc64_elf (ibfd))
11335 got = ppc64_elf_tdata (ibfd)->got;
11338 done_something = got->rawsize != got->size;
11339 if (done_something)
11344 if (done_something)
11345 (*htab->layout_sections_again) ();
11347 /* Set up for second pass over toc sections to recalculate elf_gp
11348 on input sections. */
11349 htab->toc_bfd = NULL;
11350 htab->toc_first_sec = NULL;
11351 htab->second_toc_pass = TRUE;
11352 return done_something;
11355 /* Called after second pass of multitoc partitioning. */
11358 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11360 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11362 /* After the second pass, toc_curr tracks the TOC offset used
11363 for code sections below in ppc64_elf_next_input_section. */
11364 htab->toc_curr = TOC_BASE_OFF;
11367 /* No toc references were found in ISEC. If the code in ISEC makes no
11368 calls, then there's no need to use toc adjusting stubs when branching
11369 into ISEC. Actually, indirect calls from ISEC are OK as they will
11370 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11371 needed, and 2 if a cyclical call-graph was found but no other reason
11372 for a stub was detected. If called from the top level, a return of
11373 2 means the same as a return of 0. */
11376 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
11380 /* Mark this section as checked. */
11381 isec->call_check_done = 1;
11383 /* We know none of our code bearing sections will need toc stubs. */
11384 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11387 if (isec->size == 0)
11390 if (isec->output_section == NULL)
11394 if (isec->reloc_count != 0)
11396 Elf_Internal_Rela *relstart, *rel;
11397 Elf_Internal_Sym *local_syms;
11398 struct ppc_link_hash_table *htab;
11400 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11401 info->keep_memory);
11402 if (relstart == NULL)
11405 /* Look for branches to outside of this section. */
11407 htab = ppc_hash_table (info);
11411 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
11413 enum elf_ppc64_reloc_type r_type;
11414 unsigned long r_symndx;
11415 struct elf_link_hash_entry *h;
11416 struct ppc_link_hash_entry *eh;
11417 Elf_Internal_Sym *sym;
11419 struct _opd_sec_data *opd;
11423 r_type = ELF64_R_TYPE (rel->r_info);
11424 if (r_type != R_PPC64_REL24
11425 && r_type != R_PPC64_REL14
11426 && r_type != R_PPC64_REL14_BRTAKEN
11427 && r_type != R_PPC64_REL14_BRNTAKEN)
11430 r_symndx = ELF64_R_SYM (rel->r_info);
11431 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11438 /* Calls to dynamic lib functions go through a plt call stub
11440 eh = (struct ppc_link_hash_entry *) h;
11442 && (eh->elf.plt.plist != NULL
11444 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11450 if (sym_sec == NULL)
11451 /* Ignore other undefined symbols. */
11454 /* Assume branches to other sections not included in the
11455 link need stubs too, to cover -R and absolute syms. */
11456 if (sym_sec->output_section == NULL)
11463 sym_value = sym->st_value;
11466 if (h->root.type != bfd_link_hash_defined
11467 && h->root.type != bfd_link_hash_defweak)
11469 sym_value = h->root.u.def.value;
11471 sym_value += rel->r_addend;
11473 /* If this branch reloc uses an opd sym, find the code section. */
11474 opd = get_opd_info (sym_sec);
11477 if (h == NULL && opd->adjust != NULL)
11481 adjust = opd->adjust[sym->st_value / 8];
11483 /* Assume deleted functions won't ever be called. */
11485 sym_value += adjust;
11488 dest = opd_entry_value (sym_sec, sym_value,
11489 &sym_sec, NULL, FALSE);
11490 if (dest == (bfd_vma) -1)
11495 + sym_sec->output_offset
11496 + sym_sec->output_section->vma);
11498 /* Ignore branch to self. */
11499 if (sym_sec == isec)
11502 /* If the called function uses the toc, we need a stub. */
11503 if (sym_sec->has_toc_reloc
11504 || sym_sec->makes_toc_func_call)
11510 /* Assume any branch that needs a long branch stub might in fact
11511 need a plt_branch stub. A plt_branch stub uses r2. */
11512 else if (dest - (isec->output_offset
11513 + isec->output_section->vma
11514 + rel->r_offset) + (1 << 25)
11515 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11523 /* If calling back to a section in the process of being
11524 tested, we can't say for sure that no toc adjusting stubs
11525 are needed, so don't return zero. */
11526 else if (sym_sec->call_check_in_progress)
11529 /* Branches to another section that itself doesn't have any TOC
11530 references are OK. Recursively call ourselves to check. */
11531 else if (!sym_sec->call_check_done)
11535 /* Mark current section as indeterminate, so that other
11536 sections that call back to current won't be marked as
11538 isec->call_check_in_progress = 1;
11539 recur = toc_adjusting_stub_needed (info, sym_sec);
11540 isec->call_check_in_progress = 0;
11551 if (local_syms != NULL
11552 && (elf_symtab_hdr (isec->owner).contents
11553 != (unsigned char *) local_syms))
11555 if (elf_section_data (isec)->relocs != relstart)
11560 && isec->map_head.s != NULL
11561 && (strcmp (isec->output_section->name, ".init") == 0
11562 || strcmp (isec->output_section->name, ".fini") == 0))
11564 if (isec->map_head.s->has_toc_reloc
11565 || isec->map_head.s->makes_toc_func_call)
11567 else if (!isec->map_head.s->call_check_done)
11570 isec->call_check_in_progress = 1;
11571 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11572 isec->call_check_in_progress = 0;
11579 isec->makes_toc_func_call = 1;
11584 /* The linker repeatedly calls this function for each input section,
11585 in the order that input sections are linked into output sections.
11586 Build lists of input sections to determine groupings between which
11587 we may insert linker stubs. */
11590 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
11592 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11597 if ((isec->output_section->flags & SEC_CODE) != 0
11598 && isec->output_section->index <= htab->top_index)
11600 asection **list = htab->input_list + isec->output_section->index;
11601 /* Steal the link_sec pointer for our list. */
11602 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
11603 /* This happens to make the list in reverse order,
11604 which is what we want. */
11605 PREV_SEC (isec) = *list;
11609 if (htab->multi_toc_needed)
11611 /* Analyse sections that aren't already flagged as needing a
11612 valid toc pointer. Exclude .fixup for the linux kernel.
11613 .fixup contains branches, but only back to the function that
11614 hit an exception. */
11615 if (!(isec->has_toc_reloc
11616 || (isec->flags & SEC_CODE) == 0
11617 || strcmp (isec->name, ".fixup") == 0
11618 || isec->call_check_done))
11620 if (toc_adjusting_stub_needed (info, isec) < 0)
11623 /* Make all sections use the TOC assigned for this object file.
11624 This will be wrong for pasted sections; We fix that in
11625 check_pasted_section(). */
11626 if (elf_gp (isec->owner) != 0)
11627 htab->toc_curr = elf_gp (isec->owner);
11630 htab->stub_group[isec->id].toc_off = htab->toc_curr;
11634 /* Check that all .init and .fini sections use the same toc, if they
11635 have toc relocs. */
11638 check_pasted_section (struct bfd_link_info *info, const char *name)
11640 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11644 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11645 bfd_vma toc_off = 0;
11648 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11649 if (i->has_toc_reloc)
11652 toc_off = htab->stub_group[i->id].toc_off;
11653 else if (toc_off != htab->stub_group[i->id].toc_off)
11658 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11659 if (i->makes_toc_func_call)
11661 toc_off = htab->stub_group[i->id].toc_off;
11665 /* Make sure the whole pasted function uses the same toc offset. */
11667 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11668 htab->stub_group[i->id].toc_off = toc_off;
11674 ppc64_elf_check_init_fini (struct bfd_link_info *info)
11676 return (check_pasted_section (info, ".init")
11677 & check_pasted_section (info, ".fini"));
11680 /* See whether we can group stub sections together. Grouping stub
11681 sections may result in fewer stubs. More importantly, we need to
11682 put all .init* and .fini* stubs at the beginning of the .init or
11683 .fini output sections respectively, because glibc splits the
11684 _init and _fini functions into multiple parts. Putting a stub in
11685 the middle of a function is not a good idea. */
11688 group_sections (struct ppc_link_hash_table *htab,
11689 bfd_size_type stub_group_size,
11690 bfd_boolean stubs_always_before_branch)
11693 bfd_size_type stub14_group_size;
11694 bfd_boolean suppress_size_errors;
11696 suppress_size_errors = FALSE;
11697 stub14_group_size = stub_group_size;
11698 if (stub_group_size == 1)
11700 /* Default values. */
11701 if (stubs_always_before_branch)
11703 stub_group_size = 0x1e00000;
11704 stub14_group_size = 0x7800;
11708 stub_group_size = 0x1c00000;
11709 stub14_group_size = 0x7000;
11711 suppress_size_errors = TRUE;
11714 list = htab->input_list + htab->top_index;
11717 asection *tail = *list;
11718 while (tail != NULL)
11722 bfd_size_type total;
11723 bfd_boolean big_sec;
11727 total = tail->size;
11728 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11729 && ppc64_elf_section_data (tail)->has_14bit_branch
11730 ? stub14_group_size : stub_group_size);
11731 if (big_sec && !suppress_size_errors)
11732 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11733 tail->owner, tail);
11734 curr_toc = htab->stub_group[tail->id].toc_off;
11736 while ((prev = PREV_SEC (curr)) != NULL
11737 && ((total += curr->output_offset - prev->output_offset)
11738 < (ppc64_elf_section_data (prev) != NULL
11739 && ppc64_elf_section_data (prev)->has_14bit_branch
11740 ? stub14_group_size : stub_group_size))
11741 && htab->stub_group[prev->id].toc_off == curr_toc)
11744 /* OK, the size from the start of CURR to the end is less
11745 than stub_group_size and thus can be handled by one stub
11746 section. (or the tail section is itself larger than
11747 stub_group_size, in which case we may be toast.) We
11748 should really be keeping track of the total size of stubs
11749 added here, as stubs contribute to the final output
11750 section size. That's a little tricky, and this way will
11751 only break if stubs added make the total size more than
11752 2^25, ie. for the default stub_group_size, if stubs total
11753 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11756 prev = PREV_SEC (tail);
11757 /* Set up this stub group. */
11758 htab->stub_group[tail->id].link_sec = curr;
11760 while (tail != curr && (tail = prev) != NULL);
11762 /* But wait, there's more! Input sections up to stub_group_size
11763 bytes before the stub section can be handled by it too.
11764 Don't do this if we have a really large section after the
11765 stubs, as adding more stubs increases the chance that
11766 branches may not reach into the stub section. */
11767 if (!stubs_always_before_branch && !big_sec)
11770 while (prev != NULL
11771 && ((total += tail->output_offset - prev->output_offset)
11772 < (ppc64_elf_section_data (prev) != NULL
11773 && ppc64_elf_section_data (prev)->has_14bit_branch
11774 ? stub14_group_size : stub_group_size))
11775 && htab->stub_group[prev->id].toc_off == curr_toc)
11778 prev = PREV_SEC (tail);
11779 htab->stub_group[tail->id].link_sec = curr;
11785 while (list-- != htab->input_list);
11786 free (htab->input_list);
11790 static const unsigned char glink_eh_frame_cie[] =
11792 0, 0, 0, 16, /* length. */
11793 0, 0, 0, 0, /* id. */
11794 1, /* CIE version. */
11795 'z', 'R', 0, /* Augmentation string. */
11796 4, /* Code alignment. */
11797 0x78, /* Data alignment. */
11799 1, /* Augmentation size. */
11800 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11801 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11804 /* Stripping output sections is normally done before dynamic section
11805 symbols have been allocated. This function is called later, and
11806 handles cases like htab->brlt which is mapped to its own output
11810 maybe_strip_output (struct bfd_link_info *info, asection *isec)
11812 if (isec->size == 0
11813 && isec->output_section->size == 0
11814 && !(isec->output_section->flags & SEC_KEEP)
11815 && !bfd_section_removed_from_list (info->output_bfd,
11816 isec->output_section)
11817 && elf_section_data (isec->output_section)->dynindx == 0)
11819 isec->output_section->flags |= SEC_EXCLUDE;
11820 bfd_section_list_remove (info->output_bfd, isec->output_section);
11821 info->output_bfd->section_count--;
11825 /* Determine and set the size of the stub section for a final link.
11827 The basic idea here is to examine all the relocations looking for
11828 PC-relative calls to a target that is unreachable with a "bl"
11832 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
11833 bfd_boolean plt_static_chain, int plt_thread_safe,
11834 int plt_stub_align)
11836 bfd_size_type stub_group_size;
11837 bfd_boolean stubs_always_before_branch;
11838 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11843 htab->plt_static_chain = plt_static_chain;
11844 htab->plt_stub_align = plt_stub_align;
11845 if (plt_thread_safe == -1 && !info->executable)
11846 plt_thread_safe = 1;
11847 if (!htab->opd_abi)
11848 plt_thread_safe = 0;
11849 else if (plt_thread_safe == -1)
11851 static const char *const thread_starter[] =
11855 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11857 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11858 "mq_notify", "create_timer",
11862 "GOMP_parallel_start",
11863 "GOMP_parallel_loop_static_start",
11864 "GOMP_parallel_loop_dynamic_start",
11865 "GOMP_parallel_loop_guided_start",
11866 "GOMP_parallel_loop_runtime_start",
11867 "GOMP_parallel_sections_start",
11871 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11873 struct elf_link_hash_entry *h;
11874 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11875 FALSE, FALSE, TRUE);
11876 plt_thread_safe = h != NULL && h->ref_regular;
11877 if (plt_thread_safe)
11881 htab->plt_thread_safe = plt_thread_safe;
11882 stubs_always_before_branch = group_size < 0;
11883 if (group_size < 0)
11884 stub_group_size = -group_size;
11886 stub_group_size = group_size;
11888 group_sections (htab, stub_group_size, stubs_always_before_branch);
11893 unsigned int bfd_indx;
11894 asection *stub_sec;
11896 htab->stub_iteration += 1;
11898 for (input_bfd = info->input_bfds, bfd_indx = 0;
11900 input_bfd = input_bfd->link_next, bfd_indx++)
11902 Elf_Internal_Shdr *symtab_hdr;
11904 Elf_Internal_Sym *local_syms = NULL;
11906 if (!is_ppc64_elf (input_bfd))
11909 /* We'll need the symbol table in a second. */
11910 symtab_hdr = &elf_symtab_hdr (input_bfd);
11911 if (symtab_hdr->sh_info == 0)
11914 /* Walk over each section attached to the input bfd. */
11915 for (section = input_bfd->sections;
11917 section = section->next)
11919 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
11921 /* If there aren't any relocs, then there's nothing more
11923 if ((section->flags & SEC_RELOC) == 0
11924 || (section->flags & SEC_ALLOC) == 0
11925 || (section->flags & SEC_LOAD) == 0
11926 || (section->flags & SEC_CODE) == 0
11927 || section->reloc_count == 0)
11930 /* If this section is a link-once section that will be
11931 discarded, then don't create any stubs. */
11932 if (section->output_section == NULL
11933 || section->output_section->owner != info->output_bfd)
11936 /* Get the relocs. */
11938 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
11939 info->keep_memory);
11940 if (internal_relocs == NULL)
11941 goto error_ret_free_local;
11943 /* Now examine each relocation. */
11944 irela = internal_relocs;
11945 irelaend = irela + section->reloc_count;
11946 for (; irela < irelaend; irela++)
11948 enum elf_ppc64_reloc_type r_type;
11949 unsigned int r_indx;
11950 enum ppc_stub_type stub_type;
11951 struct ppc_stub_hash_entry *stub_entry;
11952 asection *sym_sec, *code_sec;
11953 bfd_vma sym_value, code_value;
11954 bfd_vma destination;
11955 unsigned long local_off;
11956 bfd_boolean ok_dest;
11957 struct ppc_link_hash_entry *hash;
11958 struct ppc_link_hash_entry *fdh;
11959 struct elf_link_hash_entry *h;
11960 Elf_Internal_Sym *sym;
11962 const asection *id_sec;
11963 struct _opd_sec_data *opd;
11964 struct plt_entry *plt_ent;
11966 r_type = ELF64_R_TYPE (irela->r_info);
11967 r_indx = ELF64_R_SYM (irela->r_info);
11969 if (r_type >= R_PPC64_max)
11971 bfd_set_error (bfd_error_bad_value);
11972 goto error_ret_free_internal;
11975 /* Only look for stubs on branch instructions. */
11976 if (r_type != R_PPC64_REL24
11977 && r_type != R_PPC64_REL14
11978 && r_type != R_PPC64_REL14_BRTAKEN
11979 && r_type != R_PPC64_REL14_BRNTAKEN)
11982 /* Now determine the call target, its name, value,
11984 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11985 r_indx, input_bfd))
11986 goto error_ret_free_internal;
11987 hash = (struct ppc_link_hash_entry *) h;
11994 sym_value = sym->st_value;
11997 else if (hash->elf.root.type == bfd_link_hash_defined
11998 || hash->elf.root.type == bfd_link_hash_defweak)
12000 sym_value = hash->elf.root.u.def.value;
12001 if (sym_sec->output_section != NULL)
12004 else if (hash->elf.root.type == bfd_link_hash_undefweak
12005 || hash->elf.root.type == bfd_link_hash_undefined)
12007 /* Recognise an old ABI func code entry sym, and
12008 use the func descriptor sym instead if it is
12010 if (hash->elf.root.root.string[0] == '.'
12011 && (fdh = lookup_fdh (hash, htab)) != NULL)
12013 if (fdh->elf.root.type == bfd_link_hash_defined
12014 || fdh->elf.root.type == bfd_link_hash_defweak)
12016 sym_sec = fdh->elf.root.u.def.section;
12017 sym_value = fdh->elf.root.u.def.value;
12018 if (sym_sec->output_section != NULL)
12027 bfd_set_error (bfd_error_bad_value);
12028 goto error_ret_free_internal;
12035 sym_value += irela->r_addend;
12036 destination = (sym_value
12037 + sym_sec->output_offset
12038 + sym_sec->output_section->vma);
12039 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12044 code_sec = sym_sec;
12045 code_value = sym_value;
12046 opd = get_opd_info (sym_sec);
12051 if (hash == NULL && opd->adjust != NULL)
12053 long adjust = opd->adjust[sym_value / 8];
12056 code_value += adjust;
12057 sym_value += adjust;
12059 dest = opd_entry_value (sym_sec, sym_value,
12060 &code_sec, &code_value, FALSE);
12061 if (dest != (bfd_vma) -1)
12063 destination = dest;
12066 /* Fixup old ABI sym to point at code
12068 hash->elf.root.type = bfd_link_hash_defweak;
12069 hash->elf.root.u.def.section = code_sec;
12070 hash->elf.root.u.def.value = code_value;
12075 /* Determine what (if any) linker stub is needed. */
12077 stub_type = ppc_type_of_stub (section, irela, &hash,
12078 &plt_ent, destination,
12081 if (stub_type != ppc_stub_plt_call)
12083 /* Check whether we need a TOC adjusting stub.
12084 Since the linker pastes together pieces from
12085 different object files when creating the
12086 _init and _fini functions, it may be that a
12087 call to what looks like a local sym is in
12088 fact a call needing a TOC adjustment. */
12089 if (code_sec != NULL
12090 && code_sec->output_section != NULL
12091 && (htab->stub_group[code_sec->id].toc_off
12092 != htab->stub_group[section->id].toc_off)
12093 && (code_sec->has_toc_reloc
12094 || code_sec->makes_toc_func_call))
12095 stub_type = ppc_stub_long_branch_r2off;
12098 if (stub_type == ppc_stub_none)
12101 /* __tls_get_addr calls might be eliminated. */
12102 if (stub_type != ppc_stub_plt_call
12104 && (hash == htab->tls_get_addr
12105 || hash == htab->tls_get_addr_fd)
12106 && section->has_tls_reloc
12107 && irela != internal_relocs)
12109 /* Get tls info. */
12110 unsigned char *tls_mask;
12112 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
12113 irela - 1, input_bfd))
12114 goto error_ret_free_internal;
12115 if (*tls_mask != 0)
12119 if (stub_type == ppc_stub_plt_call
12120 && irela + 1 < irelaend
12121 && irela[1].r_offset == irela->r_offset + 4
12122 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12124 if (!tocsave_find (htab, INSERT,
12125 &local_syms, irela + 1, input_bfd))
12126 goto error_ret_free_internal;
12128 else if (stub_type == ppc_stub_plt_call)
12129 stub_type = ppc_stub_plt_call_r2save;
12131 /* Support for grouping stub sections. */
12132 id_sec = htab->stub_group[section->id].link_sec;
12134 /* Get the name of this stub. */
12135 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12137 goto error_ret_free_internal;
12139 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
12140 stub_name, FALSE, FALSE);
12141 if (stub_entry != NULL)
12143 /* The proper stub has already been created. */
12145 if (stub_type == ppc_stub_plt_call_r2save)
12146 stub_entry->stub_type = stub_type;
12150 stub_entry = ppc_add_stub (stub_name, section, info);
12151 if (stub_entry == NULL)
12154 error_ret_free_internal:
12155 if (elf_section_data (section)->relocs == NULL)
12156 free (internal_relocs);
12157 error_ret_free_local:
12158 if (local_syms != NULL
12159 && (symtab_hdr->contents
12160 != (unsigned char *) local_syms))
12165 stub_entry->stub_type = stub_type;
12166 if (stub_type != ppc_stub_plt_call
12167 && stub_type != ppc_stub_plt_call_r2save)
12169 stub_entry->target_value = code_value;
12170 stub_entry->target_section = code_sec;
12174 stub_entry->target_value = sym_value;
12175 stub_entry->target_section = sym_sec;
12177 stub_entry->h = hash;
12178 stub_entry->plt_ent = plt_ent;
12179 stub_entry->other = hash ? hash->elf.other : sym->st_other;
12181 if (stub_entry->h != NULL)
12182 htab->stub_globals += 1;
12185 /* We're done with the internal relocs, free them. */
12186 if (elf_section_data (section)->relocs != internal_relocs)
12187 free (internal_relocs);
12190 if (local_syms != NULL
12191 && symtab_hdr->contents != (unsigned char *) local_syms)
12193 if (!info->keep_memory)
12196 symtab_hdr->contents = (unsigned char *) local_syms;
12200 /* We may have added some stubs. Find out the new size of the
12202 for (stub_sec = htab->stub_bfd->sections;
12204 stub_sec = stub_sec->next)
12205 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12207 stub_sec->rawsize = stub_sec->size;
12208 stub_sec->size = 0;
12209 stub_sec->reloc_count = 0;
12210 stub_sec->flags &= ~SEC_RELOC;
12213 htab->brlt->size = 0;
12214 htab->brlt->reloc_count = 0;
12215 htab->brlt->flags &= ~SEC_RELOC;
12216 if (htab->relbrlt != NULL)
12217 htab->relbrlt->size = 0;
12219 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
12221 if (info->emitrelocations
12222 && htab->glink != NULL && htab->glink->size != 0)
12224 htab->glink->reloc_count = 1;
12225 htab->glink->flags |= SEC_RELOC;
12228 if (htab->glink_eh_frame != NULL
12229 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
12230 && htab->glink_eh_frame->output_section->size != 0)
12232 size_t size = 0, align;
12234 for (stub_sec = htab->stub_bfd->sections;
12236 stub_sec = stub_sec->next)
12237 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12239 if (htab->glink != NULL && htab->glink->size != 0)
12242 size += sizeof (glink_eh_frame_cie);
12244 align <<= htab->glink_eh_frame->output_section->alignment_power;
12246 size = (size + align) & ~align;
12247 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12248 htab->glink_eh_frame->size = size;
12251 if (htab->plt_stub_align != 0)
12252 for (stub_sec = htab->stub_bfd->sections;
12254 stub_sec = stub_sec->next)
12255 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12256 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12257 & (-1 << htab->plt_stub_align));
12259 for (stub_sec = htab->stub_bfd->sections;
12261 stub_sec = stub_sec->next)
12262 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12263 && stub_sec->rawsize != stub_sec->size)
12266 /* Exit from this loop when no stubs have been added, and no stubs
12267 have changed size. */
12268 if (stub_sec == NULL
12269 && (htab->glink_eh_frame == NULL
12270 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
12273 /* Ask the linker to do its stuff. */
12274 (*htab->layout_sections_again) ();
12277 maybe_strip_output (info, htab->brlt);
12278 if (htab->glink_eh_frame != NULL)
12279 maybe_strip_output (info, htab->glink_eh_frame);
12284 /* Called after we have determined section placement. If sections
12285 move, we'll be called again. Provide a value for TOCstart. */
12288 ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
12293 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12294 order. The TOC starts where the first of these sections starts. */
12295 s = bfd_get_section_by_name (obfd, ".got");
12296 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12297 s = bfd_get_section_by_name (obfd, ".toc");
12298 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12299 s = bfd_get_section_by_name (obfd, ".tocbss");
12300 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12301 s = bfd_get_section_by_name (obfd, ".plt");
12302 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
12304 /* This may happen for
12305 o references to TOC base (SYM@toc / TOC[tc0]) without a
12307 o bad linker script
12308 o --gc-sections and empty TOC sections
12310 FIXME: Warn user? */
12312 /* Look for a likely section. We probably won't even be
12314 for (s = obfd->sections; s != NULL; s = s->next)
12315 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12317 == (SEC_ALLOC | SEC_SMALL_DATA))
12320 for (s = obfd->sections; s != NULL; s = s->next)
12321 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
12322 == (SEC_ALLOC | SEC_SMALL_DATA))
12325 for (s = obfd->sections; s != NULL; s = s->next)
12326 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12330 for (s = obfd->sections; s != NULL; s = s->next)
12331 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
12337 TOCstart = s->output_section->vma + s->output_offset;
12339 _bfd_set_gp_value (obfd, TOCstart);
12341 if (info != NULL && s != NULL && is_ppc64_elf (obfd))
12343 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12346 && htab->elf.hgot != NULL)
12348 htab->elf.hgot->type = STT_OBJECT;
12349 htab->elf.hgot->root.type = bfd_link_hash_defined;
12350 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12351 htab->elf.hgot->root.u.def.section = s;
12357 /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12358 write out any global entry stubs. */
12361 build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12363 struct bfd_link_info *info;
12364 struct ppc_link_hash_table *htab;
12365 struct plt_entry *pent;
12368 if (h->root.type == bfd_link_hash_indirect)
12371 if (!h->pointer_equality_needed)
12374 if (h->def_regular)
12378 htab = ppc_hash_table (info);
12383 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12384 if (pent->plt.offset != (bfd_vma) -1
12385 && pent->addend == 0)
12391 /* For ELFv2, if this symbol is not defined in a regular file
12392 and we are not generating a shared library or pie, then we
12393 need to define the symbol in the executable on a call stub.
12394 This is to avoid text relocations. */
12395 h->root.u.def.section = s;
12396 h->root.u.def.value = s->size;
12398 p = s->contents + h->root.u.def.value;
12400 if (!htab->elf.dynamic_sections_created
12401 || h->dynindx == -1)
12403 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12404 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12406 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12408 info->callbacks->einfo
12409 (_("%P: linkage table error against `%T'\n"),
12410 h->root.root.string);
12411 bfd_set_error (bfd_error_bad_value);
12412 htab->stub_error = TRUE;
12415 if (PPC_HA (off) != 0)
12417 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12420 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12422 bfd_put_32 (s->owner, MTCTR_R12, p);
12424 bfd_put_32 (s->owner, BCTR, p);
12430 /* Build all the stubs associated with the current output file.
12431 The stubs are kept in a hash table attached to the main linker
12432 hash table. This function is called via gldelf64ppc_finish. */
12435 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
12436 struct bfd_link_info *info,
12439 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12440 asection *stub_sec;
12442 int stub_sec_count = 0;
12447 htab->emit_stub_syms = emit_stub_syms;
12449 /* Allocate memory to hold the linker stubs. */
12450 for (stub_sec = htab->stub_bfd->sections;
12452 stub_sec = stub_sec->next)
12453 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12454 && stub_sec->size != 0)
12456 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
12457 if (stub_sec->contents == NULL)
12459 /* We want to check that built size is the same as calculated
12460 size. rawsize is a convenient location to use. */
12461 stub_sec->rawsize = stub_sec->size;
12462 stub_sec->size = 0;
12465 if (htab->glink != NULL && htab->glink->size != 0)
12470 /* Build the .glink plt call stub. */
12471 if (htab->emit_stub_syms)
12473 struct elf_link_hash_entry *h;
12474 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12475 TRUE, FALSE, FALSE);
12478 if (h->root.type == bfd_link_hash_new)
12480 h->root.type = bfd_link_hash_defined;
12481 h->root.u.def.section = htab->glink;
12482 h->root.u.def.value = 8;
12483 h->ref_regular = 1;
12484 h->def_regular = 1;
12485 h->ref_regular_nonweak = 1;
12486 h->forced_local = 1;
12490 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
12491 if (info->emitrelocations)
12493 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12496 r->r_offset = (htab->glink->output_offset
12497 + htab->glink->output_section->vma);
12498 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12499 r->r_addend = plt0;
12501 p = htab->glink->contents;
12502 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
12503 bfd_put_64 (htab->glink->owner, plt0, p);
12507 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12509 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12511 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12513 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12515 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12517 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12519 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12521 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12523 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12525 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12530 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12532 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12534 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12536 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12538 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12540 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12542 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12544 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12546 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12548 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12550 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12552 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12555 bfd_put_32 (htab->glink->owner, BCTR, p);
12557 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12559 bfd_put_32 (htab->glink->owner, NOP, p);
12563 /* Build the .glink lazy link call stubs. */
12565 while (p < htab->glink->contents + htab->glink->rawsize)
12571 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12576 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12578 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12583 bfd_put_32 (htab->glink->owner,
12584 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
12589 /* Build .glink global entry stubs. */
12590 if (htab->glink->size > htab->glink->rawsize)
12592 htab->glink->size = (htab->glink->rawsize + 15) & -16;
12593 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
12597 if (htab->brlt->size != 0)
12599 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
12601 if (htab->brlt->contents == NULL)
12604 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
12606 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
12607 htab->relbrlt->size);
12608 if (htab->relbrlt->contents == NULL)
12612 if (htab->glink_eh_frame != NULL
12613 && htab->glink_eh_frame->size != 0)
12616 bfd_byte *last_fde;
12617 size_t last_fde_len, size, align, pad;
12619 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12622 htab->glink_eh_frame->contents = p;
12625 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12627 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12628 /* CIE length (rewrite in case little-endian). */
12629 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12630 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12631 p += sizeof (glink_eh_frame_cie);
12633 for (stub_sec = htab->stub_bfd->sections;
12635 stub_sec = stub_sec->next)
12636 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12641 bfd_put_32 (htab->elf.dynobj, 16, p);
12644 val = p - htab->glink_eh_frame->contents;
12645 bfd_put_32 (htab->elf.dynobj, val, p);
12647 /* Offset to stub section. */
12648 val = (stub_sec->output_section->vma
12649 + stub_sec->output_offset);
12650 val -= (htab->glink_eh_frame->output_section->vma
12651 + htab->glink_eh_frame->output_offset);
12652 val -= p - htab->glink_eh_frame->contents;
12653 if (val + 0x80000000 > 0xffffffff)
12655 info->callbacks->einfo
12656 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12660 bfd_put_32 (htab->elf.dynobj, val, p);
12662 /* stub section size. */
12663 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12665 /* Augmentation. */
12670 if (htab->glink != NULL && htab->glink->size != 0)
12675 bfd_put_32 (htab->elf.dynobj, 20, p);
12678 val = p - htab->glink_eh_frame->contents;
12679 bfd_put_32 (htab->elf.dynobj, val, p);
12681 /* Offset to .glink. */
12682 val = (htab->glink->output_section->vma
12683 + htab->glink->output_offset
12685 val -= (htab->glink_eh_frame->output_section->vma
12686 + htab->glink_eh_frame->output_offset);
12687 val -= p - htab->glink_eh_frame->contents;
12688 if (val + 0x80000000 > 0xffffffff)
12690 info->callbacks->einfo
12691 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
12692 htab->glink->name);
12695 bfd_put_32 (htab->elf.dynobj, val, p);
12698 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12700 /* Augmentation. */
12703 *p++ = DW_CFA_advance_loc + 1;
12704 *p++ = DW_CFA_register;
12707 *p++ = DW_CFA_advance_loc + 4;
12708 *p++ = DW_CFA_restore_extended;
12711 /* Subsume any padding into the last FDE if user .eh_frame
12712 sections are aligned more than glink_eh_frame. Otherwise any
12713 zero padding will be seen as a terminator. */
12714 size = p - htab->glink_eh_frame->contents;
12716 align <<= htab->glink_eh_frame->output_section->alignment_power;
12718 pad = ((size + align) & ~align) - size;
12719 htab->glink_eh_frame->size = size + pad;
12720 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12723 /* Build the stubs as directed by the stub hash table. */
12724 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
12726 if (htab->relbrlt != NULL)
12727 htab->relbrlt->reloc_count = 0;
12729 if (htab->plt_stub_align != 0)
12730 for (stub_sec = htab->stub_bfd->sections;
12732 stub_sec = stub_sec->next)
12733 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12734 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12735 & (-1 << htab->plt_stub_align));
12737 for (stub_sec = htab->stub_bfd->sections;
12739 stub_sec = stub_sec->next)
12740 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12742 stub_sec_count += 1;
12743 if (stub_sec->rawsize != stub_sec->size)
12747 if (stub_sec != NULL
12748 || (htab->glink_eh_frame != NULL
12749 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
12751 htab->stub_error = TRUE;
12752 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
12755 if (htab->stub_error)
12760 *stats = bfd_malloc (500);
12761 if (*stats == NULL)
12764 sprintf (*stats, _("linker stubs in %u group%s\n"
12766 " toc adjust %lu\n"
12767 " long branch %lu\n"
12768 " long toc adj %lu\n"
12770 " plt call toc %lu"),
12772 stub_sec_count == 1 ? "" : "s",
12773 htab->stub_count[ppc_stub_long_branch - 1],
12774 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12775 htab->stub_count[ppc_stub_plt_branch - 1],
12776 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
12777 htab->stub_count[ppc_stub_plt_call - 1],
12778 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
12783 /* This function undoes the changes made by add_symbol_adjust. */
12786 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12788 struct ppc_link_hash_entry *eh;
12790 if (h->root.type == bfd_link_hash_indirect)
12793 eh = (struct ppc_link_hash_entry *) h;
12794 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12797 eh->elf.root.type = bfd_link_hash_undefined;
12802 ppc64_elf_restore_symbols (struct bfd_link_info *info)
12804 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12807 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
12810 /* What to do when ld finds relocations against symbols defined in
12811 discarded sections. */
12813 static unsigned int
12814 ppc64_elf_action_discarded (asection *sec)
12816 if (strcmp (".opd", sec->name) == 0)
12819 if (strcmp (".toc", sec->name) == 0)
12822 if (strcmp (".toc1", sec->name) == 0)
12825 return _bfd_elf_default_action_discarded (sec);
12828 /* The RELOCATE_SECTION function is called by the ELF backend linker
12829 to handle the relocations for a section.
12831 The relocs are always passed as Rela structures; if the section
12832 actually uses Rel structures, the r_addend field will always be
12835 This function is responsible for adjust the section contents as
12836 necessary, and (if using Rela relocs and generating a
12837 relocatable output file) adjusting the reloc addend as
12840 This function does not have to worry about setting the reloc
12841 address or the reloc symbol index.
12843 LOCAL_SYMS is a pointer to the swapped in local symbols.
12845 LOCAL_SECTIONS is an array giving the section in the input file
12846 corresponding to the st_shndx field of each local symbol.
12848 The global hash table entry for the global symbols can be found
12849 via elf_sym_hashes (input_bfd).
12851 When generating relocatable output, this function must handle
12852 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12853 going to be the section symbol corresponding to the output
12854 section, which means that the addend must be adjusted
12858 ppc64_elf_relocate_section (bfd *output_bfd,
12859 struct bfd_link_info *info,
12861 asection *input_section,
12862 bfd_byte *contents,
12863 Elf_Internal_Rela *relocs,
12864 Elf_Internal_Sym *local_syms,
12865 asection **local_sections)
12867 struct ppc_link_hash_table *htab;
12868 Elf_Internal_Shdr *symtab_hdr;
12869 struct elf_link_hash_entry **sym_hashes;
12870 Elf_Internal_Rela *rel;
12871 Elf_Internal_Rela *relend;
12872 Elf_Internal_Rela outrel;
12874 struct got_entry **local_got_ents;
12876 bfd_boolean ret = TRUE;
12877 bfd_boolean is_opd;
12878 /* Assume 'at' branch hints. */
12879 bfd_boolean is_isa_v2 = TRUE;
12880 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
12882 /* Initialize howto table if needed. */
12883 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
12886 htab = ppc_hash_table (info);
12890 /* Don't relocate stub sections. */
12891 if (input_section->owner == htab->stub_bfd)
12894 BFD_ASSERT (is_ppc64_elf (input_bfd));
12896 local_got_ents = elf_local_got_ents (input_bfd);
12897 TOCstart = elf_gp (output_bfd);
12898 symtab_hdr = &elf_symtab_hdr (input_bfd);
12899 sym_hashes = elf_sym_hashes (input_bfd);
12900 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
12903 relend = relocs + input_section->reloc_count;
12904 for (; rel < relend; rel++)
12906 enum elf_ppc64_reloc_type r_type;
12908 bfd_reloc_status_type r;
12909 Elf_Internal_Sym *sym;
12911 struct elf_link_hash_entry *h_elf;
12912 struct ppc_link_hash_entry *h;
12913 struct ppc_link_hash_entry *fdh;
12914 const char *sym_name;
12915 unsigned long r_symndx, toc_symndx;
12916 bfd_vma toc_addend;
12917 unsigned char tls_mask, tls_gd, tls_type;
12918 unsigned char sym_type;
12919 bfd_vma relocation;
12920 bfd_boolean unresolved_reloc;
12921 bfd_boolean warned;
12922 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
12925 struct ppc_stub_hash_entry *stub_entry;
12926 bfd_vma max_br_offset;
12928 const Elf_Internal_Rela orig_rel = *rel;
12930 r_type = ELF64_R_TYPE (rel->r_info);
12931 r_symndx = ELF64_R_SYM (rel->r_info);
12933 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12934 symbol of the previous ADDR64 reloc. The symbol gives us the
12935 proper TOC base to use. */
12936 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12938 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12940 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12946 unresolved_reloc = FALSE;
12949 if (r_symndx < symtab_hdr->sh_info)
12951 /* It's a local symbol. */
12952 struct _opd_sec_data *opd;
12954 sym = local_syms + r_symndx;
12955 sec = local_sections[r_symndx];
12956 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
12957 sym_type = ELF64_ST_TYPE (sym->st_info);
12958 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
12959 opd = get_opd_info (sec);
12960 if (opd != NULL && opd->adjust != NULL)
12962 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
12967 /* If this is a relocation against the opd section sym
12968 and we have edited .opd, adjust the reloc addend so
12969 that ld -r and ld --emit-relocs output is correct.
12970 If it is a reloc against some other .opd symbol,
12971 then the symbol value will be adjusted later. */
12972 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12973 rel->r_addend += adjust;
12975 relocation += adjust;
12981 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12982 r_symndx, symtab_hdr, sym_hashes,
12983 h_elf, sec, relocation,
12984 unresolved_reloc, warned);
12985 sym_name = h_elf->root.root.string;
12986 sym_type = h_elf->type;
12988 && sec->owner == output_bfd
12989 && strcmp (sec->name, ".opd") == 0)
12991 /* This is a symbol defined in a linker script. All
12992 such are defined in output sections, even those
12993 defined by simple assignment from a symbol defined in
12994 an input section. Transfer the symbol to an
12995 appropriate input .opd section, so that a branch to
12996 this symbol will be mapped to the location specified
12997 by the opd entry. */
12998 struct bfd_link_order *lo;
12999 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13000 if (lo->type == bfd_indirect_link_order)
13002 asection *isec = lo->u.indirect.section;
13003 if (h_elf->root.u.def.value >= isec->output_offset
13004 && h_elf->root.u.def.value < (isec->output_offset
13007 h_elf->root.u.def.value -= isec->output_offset;
13008 h_elf->root.u.def.section = isec;
13015 h = (struct ppc_link_hash_entry *) h_elf;
13017 if (sec != NULL && discarded_section (sec))
13018 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
13020 ppc64_elf_howto_table[r_type], 0,
13023 if (info->relocatable)
13026 if (h != NULL && &h->elf == htab->elf.hgot)
13028 relocation = (TOCstart
13029 + htab->stub_group[input_section->id].toc_off);
13030 sec = bfd_abs_section_ptr;
13031 unresolved_reloc = FALSE;
13034 /* TLS optimizations. Replace instruction sequences and relocs
13035 based on information we collected in tls_optimize. We edit
13036 RELOCS so that --emit-relocs will output something sensible
13037 for the final instruction stream. */
13042 tls_mask = h->tls_mask;
13043 else if (local_got_ents != NULL)
13045 struct plt_entry **local_plt = (struct plt_entry **)
13046 (local_got_ents + symtab_hdr->sh_info);
13047 unsigned char *lgot_masks = (unsigned char *)
13048 (local_plt + symtab_hdr->sh_info);
13049 tls_mask = lgot_masks[r_symndx];
13052 && (r_type == R_PPC64_TLS
13053 || r_type == R_PPC64_TLSGD
13054 || r_type == R_PPC64_TLSLD))
13056 /* Check for toc tls entries. */
13057 unsigned char *toc_tls;
13059 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13060 &local_syms, rel, input_bfd))
13064 tls_mask = *toc_tls;
13067 /* Check that tls relocs are used with tls syms, and non-tls
13068 relocs are used with non-tls syms. */
13069 if (r_symndx != STN_UNDEF
13070 && r_type != R_PPC64_NONE
13072 || h->elf.root.type == bfd_link_hash_defined
13073 || h->elf.root.type == bfd_link_hash_defweak)
13074 && (IS_PPC64_TLS_RELOC (r_type)
13075 != (sym_type == STT_TLS
13076 || (sym_type == STT_SECTION
13077 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
13080 && (r_type == R_PPC64_TLS
13081 || r_type == R_PPC64_TLSGD
13082 || r_type == R_PPC64_TLSLD))
13083 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13086 info->callbacks->einfo
13087 (!IS_PPC64_TLS_RELOC (r_type)
13088 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13089 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
13090 input_bfd, input_section, rel->r_offset,
13091 ppc64_elf_howto_table[r_type]->name,
13095 /* Ensure reloc mapping code below stays sane. */
13096 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13097 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13098 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13099 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13100 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13101 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13102 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13103 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13104 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13105 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13113 case R_PPC64_LO_DS_OPT:
13114 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13115 if ((insn & (0x3f << 26)) != 58u << 26)
13117 insn += (14u << 26) - (58u << 26);
13118 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13119 r_type = R_PPC64_TOC16_LO;
13120 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13123 case R_PPC64_TOC16:
13124 case R_PPC64_TOC16_LO:
13125 case R_PPC64_TOC16_DS:
13126 case R_PPC64_TOC16_LO_DS:
13128 /* Check for toc tls entries. */
13129 unsigned char *toc_tls;
13132 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13133 &local_syms, rel, input_bfd);
13139 tls_mask = *toc_tls;
13140 if (r_type == R_PPC64_TOC16_DS
13141 || r_type == R_PPC64_TOC16_LO_DS)
13144 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13149 /* If we found a GD reloc pair, then we might be
13150 doing a GD->IE transition. */
13153 tls_gd = TLS_TPRELGD;
13154 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13157 else if (retval == 3)
13159 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13167 case R_PPC64_GOT_TPREL16_HI:
13168 case R_PPC64_GOT_TPREL16_HA:
13170 && (tls_mask & TLS_TPREL) == 0)
13172 rel->r_offset -= d_offset;
13173 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13174 r_type = R_PPC64_NONE;
13175 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13179 case R_PPC64_GOT_TPREL16_DS:
13180 case R_PPC64_GOT_TPREL16_LO_DS:
13182 && (tls_mask & TLS_TPREL) == 0)
13185 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13187 insn |= 0x3c0d0000; /* addis 0,13,0 */
13188 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13189 r_type = R_PPC64_TPREL16_HA;
13190 if (toc_symndx != 0)
13192 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13193 rel->r_addend = toc_addend;
13194 /* We changed the symbol. Start over in order to
13195 get h, sym, sec etc. right. */
13200 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13206 && (tls_mask & TLS_TPREL) == 0)
13208 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
13209 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13212 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13213 /* Was PPC64_TLS which sits on insn boundary, now
13214 PPC64_TPREL16_LO which is at low-order half-word. */
13215 rel->r_offset += d_offset;
13216 r_type = R_PPC64_TPREL16_LO;
13217 if (toc_symndx != 0)
13219 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
13220 rel->r_addend = toc_addend;
13221 /* We changed the symbol. Start over in order to
13222 get h, sym, sec etc. right. */
13227 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13231 case R_PPC64_GOT_TLSGD16_HI:
13232 case R_PPC64_GOT_TLSGD16_HA:
13233 tls_gd = TLS_TPRELGD;
13234 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13238 case R_PPC64_GOT_TLSLD16_HI:
13239 case R_PPC64_GOT_TLSLD16_HA:
13240 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13243 if ((tls_mask & tls_gd) != 0)
13244 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13245 + R_PPC64_GOT_TPREL16_DS);
13248 rel->r_offset -= d_offset;
13249 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13250 r_type = R_PPC64_NONE;
13252 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13256 case R_PPC64_GOT_TLSGD16:
13257 case R_PPC64_GOT_TLSGD16_LO:
13258 tls_gd = TLS_TPRELGD;
13259 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13263 case R_PPC64_GOT_TLSLD16:
13264 case R_PPC64_GOT_TLSLD16_LO:
13265 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13267 unsigned int insn1, insn2, insn3;
13271 offset = (bfd_vma) -1;
13272 /* If not using the newer R_PPC64_TLSGD/LD to mark
13273 __tls_get_addr calls, we must trust that the call
13274 stays with its arg setup insns, ie. that the next
13275 reloc is the __tls_get_addr call associated with
13276 the current reloc. Edit both insns. */
13277 if (input_section->has_tls_get_addr_call
13278 && rel + 1 < relend
13279 && branch_reloc_hash_match (input_bfd, rel + 1,
13280 htab->tls_get_addr,
13281 htab->tls_get_addr_fd))
13282 offset = rel[1].r_offset;
13283 if ((tls_mask & tls_gd) != 0)
13286 insn1 = bfd_get_32 (output_bfd,
13287 contents + rel->r_offset - d_offset);
13288 insn1 &= (1 << 26) - (1 << 2);
13289 insn1 |= 58 << 26; /* ld */
13290 insn2 = 0x7c636a14; /* add 3,3,13 */
13291 if (offset != (bfd_vma) -1)
13292 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13293 if ((tls_mask & TLS_EXPLICIT) == 0)
13294 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13295 + R_PPC64_GOT_TPREL16_DS);
13297 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13298 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13303 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13304 insn2 = 0x38630000; /* addi 3,3,0 */
13307 /* Was an LD reloc. */
13309 sec = local_sections[toc_symndx];
13311 r_symndx < symtab_hdr->sh_info;
13313 if (local_sections[r_symndx] == sec)
13315 if (r_symndx >= symtab_hdr->sh_info)
13316 r_symndx = STN_UNDEF;
13317 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13318 if (r_symndx != STN_UNDEF)
13319 rel->r_addend -= (local_syms[r_symndx].st_value
13320 + sec->output_offset
13321 + sec->output_section->vma);
13323 else if (toc_symndx != 0)
13325 r_symndx = toc_symndx;
13326 rel->r_addend = toc_addend;
13328 r_type = R_PPC64_TPREL16_HA;
13329 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13330 if (offset != (bfd_vma) -1)
13332 rel[1].r_info = ELF64_R_INFO (r_symndx,
13333 R_PPC64_TPREL16_LO);
13334 rel[1].r_offset = offset + d_offset;
13335 rel[1].r_addend = rel->r_addend;
13338 bfd_put_32 (output_bfd, insn1,
13339 contents + rel->r_offset - d_offset);
13340 if (offset != (bfd_vma) -1)
13342 insn3 = bfd_get_32 (output_bfd,
13343 contents + offset + 4);
13345 || insn3 == CROR_151515 || insn3 == CROR_313131)
13347 rel[1].r_offset += 4;
13348 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13351 bfd_put_32 (output_bfd, insn2, contents + offset);
13353 if ((tls_mask & tls_gd) == 0
13354 && (tls_gd == 0 || toc_symndx != 0))
13356 /* We changed the symbol. Start over in order
13357 to get h, sym, sec etc. right. */
13364 case R_PPC64_TLSGD:
13365 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13367 unsigned int insn2, insn3;
13368 bfd_vma offset = rel->r_offset;
13370 if ((tls_mask & TLS_TPRELGD) != 0)
13373 r_type = R_PPC64_NONE;
13374 insn2 = 0x7c636a14; /* add 3,3,13 */
13379 if (toc_symndx != 0)
13381 r_symndx = toc_symndx;
13382 rel->r_addend = toc_addend;
13384 r_type = R_PPC64_TPREL16_LO;
13385 rel->r_offset = offset + d_offset;
13386 insn2 = 0x38630000; /* addi 3,3,0 */
13388 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13389 /* Zap the reloc on the _tls_get_addr call too. */
13390 BFD_ASSERT (offset == rel[1].r_offset);
13391 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13392 insn3 = bfd_get_32 (output_bfd,
13393 contents + offset + 4);
13395 || insn3 == CROR_151515 || insn3 == CROR_313131)
13397 rel->r_offset += 4;
13398 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13401 bfd_put_32 (output_bfd, insn2, contents + offset);
13402 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
13410 case R_PPC64_TLSLD:
13411 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13413 unsigned int insn2, insn3;
13414 bfd_vma offset = rel->r_offset;
13417 sec = local_sections[toc_symndx];
13419 r_symndx < symtab_hdr->sh_info;
13421 if (local_sections[r_symndx] == sec)
13423 if (r_symndx >= symtab_hdr->sh_info)
13424 r_symndx = STN_UNDEF;
13425 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
13426 if (r_symndx != STN_UNDEF)
13427 rel->r_addend -= (local_syms[r_symndx].st_value
13428 + sec->output_offset
13429 + sec->output_section->vma);
13431 r_type = R_PPC64_TPREL16_LO;
13432 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13433 rel->r_offset = offset + d_offset;
13434 /* Zap the reloc on the _tls_get_addr call too. */
13435 BFD_ASSERT (offset == rel[1].r_offset);
13436 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
13437 insn2 = 0x38630000; /* addi 3,3,0 */
13438 insn3 = bfd_get_32 (output_bfd,
13439 contents + offset + 4);
13441 || insn3 == CROR_151515 || insn3 == CROR_313131)
13443 rel->r_offset += 4;
13444 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13447 bfd_put_32 (output_bfd, insn2, contents + offset);
13453 case R_PPC64_DTPMOD64:
13454 if (rel + 1 < relend
13455 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13456 && rel[1].r_offset == rel->r_offset + 8)
13458 if ((tls_mask & TLS_GD) == 0)
13460 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13461 if ((tls_mask & TLS_TPRELGD) != 0)
13462 r_type = R_PPC64_TPREL64;
13465 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13466 r_type = R_PPC64_NONE;
13468 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13473 if ((tls_mask & TLS_LD) == 0)
13475 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
13476 r_type = R_PPC64_NONE;
13477 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13482 case R_PPC64_TPREL64:
13483 if ((tls_mask & TLS_TPREL) == 0)
13485 r_type = R_PPC64_NONE;
13486 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13491 /* Handle other relocations that tweak non-addend part of insn. */
13493 max_br_offset = 1 << 25;
13494 addend = rel->r_addend;
13495 reloc_dest = DEST_NORMAL;
13501 case R_PPC64_TOCSAVE:
13502 if (relocation + addend == (rel->r_offset
13503 + input_section->output_offset
13504 + input_section->output_section->vma)
13505 && tocsave_find (htab, NO_INSERT,
13506 &local_syms, rel, input_bfd))
13508 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13510 || insn == CROR_151515 || insn == CROR_313131)
13511 bfd_put_32 (input_bfd,
13512 STD_R2_0R1 + STK_TOC (htab),
13513 contents + rel->r_offset);
13517 /* Branch taken prediction relocations. */
13518 case R_PPC64_ADDR14_BRTAKEN:
13519 case R_PPC64_REL14_BRTAKEN:
13520 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13523 /* Branch not taken prediction relocations. */
13524 case R_PPC64_ADDR14_BRNTAKEN:
13525 case R_PPC64_REL14_BRNTAKEN:
13526 insn |= bfd_get_32 (output_bfd,
13527 contents + rel->r_offset) & ~(0x01 << 21);
13530 case R_PPC64_REL14:
13531 max_br_offset = 1 << 15;
13534 case R_PPC64_REL24:
13535 /* Calls to functions with a different TOC, such as calls to
13536 shared objects, need to alter the TOC pointer. This is
13537 done using a linkage stub. A REL24 branching to these
13538 linkage stubs needs to be followed by a nop, as the nop
13539 will be replaced with an instruction to restore the TOC
13544 && h->oh->is_func_descriptor)
13545 fdh = ppc_follow_link (h->oh);
13546 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13548 if (stub_entry != NULL
13549 && (stub_entry->stub_type == ppc_stub_plt_call
13550 || stub_entry->stub_type == ppc_stub_plt_call_r2save
13551 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13552 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
13554 bfd_boolean can_plt_call = FALSE;
13556 /* All of these stubs will modify r2, so there must be a
13557 branch and link followed by a nop. The nop is
13558 replaced by an insn to restore r2. */
13559 if (rel->r_offset + 8 <= input_section->size)
13563 br = bfd_get_32 (input_bfd,
13564 contents + rel->r_offset);
13569 nop = bfd_get_32 (input_bfd,
13570 contents + rel->r_offset + 4);
13572 || nop == CROR_151515 || nop == CROR_313131)
13575 && (h == htab->tls_get_addr_fd
13576 || h == htab->tls_get_addr)
13577 && !htab->no_tls_get_addr_opt)
13579 /* Special stub used, leave nop alone. */
13582 bfd_put_32 (input_bfd,
13583 LD_R2_0R1 + STK_TOC (htab),
13584 contents + rel->r_offset + 4);
13585 can_plt_call = TRUE;
13590 if (!can_plt_call && h != NULL)
13592 const char *name = h->elf.root.root.string;
13597 if (strncmp (name, "__libc_start_main", 17) == 0
13598 && (name[17] == 0 || name[17] == '@'))
13600 /* Allow crt1 branch to go via a toc adjusting
13601 stub. Other calls that never return could do
13602 the same, if we could detect such. */
13603 can_plt_call = TRUE;
13609 /* g++ as of 20130507 emits self-calls without a
13610 following nop. This is arguably wrong since we
13611 have conflicting information. On the one hand a
13612 global symbol and on the other a local call
13613 sequence, but don't error for this special case.
13614 It isn't possible to cheaply verify we have
13615 exactly such a call. Allow all calls to the same
13617 asection *code_sec = sec;
13619 if (get_opd_info (sec) != NULL)
13621 bfd_vma off = (relocation + addend
13622 - sec->output_section->vma
13623 - sec->output_offset);
13625 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
13627 if (code_sec == input_section)
13628 can_plt_call = TRUE;
13633 info->callbacks->einfo
13634 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13635 "recompile with -fPIC"),
13636 input_bfd, input_section, rel->r_offset, sym_name);
13638 bfd_set_error (bfd_error_bad_value);
13643 && (stub_entry->stub_type == ppc_stub_plt_call
13644 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
13645 unresolved_reloc = FALSE;
13648 if ((stub_entry == NULL
13649 || stub_entry->stub_type == ppc_stub_long_branch
13650 || stub_entry->stub_type == ppc_stub_plt_branch)
13651 && get_opd_info (sec) != NULL)
13653 /* The branch destination is the value of the opd entry. */
13654 bfd_vma off = (relocation + addend
13655 - sec->output_section->vma
13656 - sec->output_offset);
13657 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
13658 if (dest != (bfd_vma) -1)
13662 reloc_dest = DEST_OPD;
13666 /* If the branch is out of reach we ought to have a long
13668 from = (rel->r_offset
13669 + input_section->output_offset
13670 + input_section->output_section->vma);
13672 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13676 if (stub_entry != NULL
13677 && (stub_entry->stub_type == ppc_stub_long_branch
13678 || stub_entry->stub_type == ppc_stub_plt_branch)
13679 && (r_type == R_PPC64_ADDR14_BRTAKEN
13680 || r_type == R_PPC64_ADDR14_BRNTAKEN
13681 || (relocation + addend - from + max_br_offset
13682 < 2 * max_br_offset)))
13683 /* Don't use the stub if this branch is in range. */
13686 if (stub_entry != NULL)
13688 /* Munge up the value and addend so that we call the stub
13689 rather than the procedure directly. */
13690 relocation = (stub_entry->stub_offset
13691 + stub_entry->stub_sec->output_offset
13692 + stub_entry->stub_sec->output_section->vma);
13694 reloc_dest = DEST_STUB;
13696 if ((stub_entry->stub_type == ppc_stub_plt_call
13697 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13698 && (ALWAYS_EMIT_R2SAVE
13699 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13700 && rel + 1 < relend
13701 && rel[1].r_offset == rel->r_offset + 4
13702 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13710 /* Set 'a' bit. This is 0b00010 in BO field for branch
13711 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13712 for branch on CTR insns (BO == 1a00t or 1a01t). */
13713 if ((insn & (0x14 << 21)) == (0x04 << 21))
13714 insn |= 0x02 << 21;
13715 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13716 insn |= 0x08 << 21;
13722 /* Invert 'y' bit if not the default. */
13723 if ((bfd_signed_vma) (relocation + addend - from) < 0)
13724 insn ^= 0x01 << 21;
13727 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
13730 /* NOP out calls to undefined weak functions.
13731 We can thus call a weak function without first
13732 checking whether the function is defined. */
13734 && h->elf.root.type == bfd_link_hash_undefweak
13735 && h->elf.dynindx == -1
13736 && r_type == R_PPC64_REL24
13740 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13746 /* Set `addend'. */
13751 info->callbacks->einfo
13752 (_("%P: %B: unknown relocation type %d for `%T'\n"),
13753 input_bfd, (int) r_type, sym_name);
13755 bfd_set_error (bfd_error_bad_value);
13761 case R_PPC64_TLSGD:
13762 case R_PPC64_TLSLD:
13763 case R_PPC64_TOCSAVE:
13764 case R_PPC64_GNU_VTINHERIT:
13765 case R_PPC64_GNU_VTENTRY:
13768 /* GOT16 relocations. Like an ADDR16 using the symbol's
13769 address in the GOT as relocation value instead of the
13770 symbol's value itself. Also, create a GOT entry for the
13771 symbol and put the symbol value there. */
13772 case R_PPC64_GOT_TLSGD16:
13773 case R_PPC64_GOT_TLSGD16_LO:
13774 case R_PPC64_GOT_TLSGD16_HI:
13775 case R_PPC64_GOT_TLSGD16_HA:
13776 tls_type = TLS_TLS | TLS_GD;
13779 case R_PPC64_GOT_TLSLD16:
13780 case R_PPC64_GOT_TLSLD16_LO:
13781 case R_PPC64_GOT_TLSLD16_HI:
13782 case R_PPC64_GOT_TLSLD16_HA:
13783 tls_type = TLS_TLS | TLS_LD;
13786 case R_PPC64_GOT_TPREL16_DS:
13787 case R_PPC64_GOT_TPREL16_LO_DS:
13788 case R_PPC64_GOT_TPREL16_HI:
13789 case R_PPC64_GOT_TPREL16_HA:
13790 tls_type = TLS_TLS | TLS_TPREL;
13793 case R_PPC64_GOT_DTPREL16_DS:
13794 case R_PPC64_GOT_DTPREL16_LO_DS:
13795 case R_PPC64_GOT_DTPREL16_HI:
13796 case R_PPC64_GOT_DTPREL16_HA:
13797 tls_type = TLS_TLS | TLS_DTPREL;
13800 case R_PPC64_GOT16:
13801 case R_PPC64_GOT16_LO:
13802 case R_PPC64_GOT16_HI:
13803 case R_PPC64_GOT16_HA:
13804 case R_PPC64_GOT16_DS:
13805 case R_PPC64_GOT16_LO_DS:
13808 /* Relocation is to the entry for this symbol in the global
13813 unsigned long indx = 0;
13814 struct got_entry *ent;
13816 if (tls_type == (TLS_TLS | TLS_LD)
13818 || !h->elf.def_dynamic))
13819 ent = ppc64_tlsld_got (input_bfd);
13825 bfd_boolean dyn = htab->elf.dynamic_sections_created;
13826 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13829 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
13830 /* This is actually a static link, or it is a
13831 -Bsymbolic link and the symbol is defined
13832 locally, or the symbol was forced to be local
13833 because of a version file. */
13837 BFD_ASSERT (h->elf.dynindx != -1);
13838 indx = h->elf.dynindx;
13839 unresolved_reloc = FALSE;
13841 ent = h->elf.got.glist;
13845 if (local_got_ents == NULL)
13847 ent = local_got_ents[r_symndx];
13850 for (; ent != NULL; ent = ent->next)
13851 if (ent->addend == orig_rel.r_addend
13852 && ent->owner == input_bfd
13853 && ent->tls_type == tls_type)
13859 if (ent->is_indirect)
13860 ent = ent->got.ent;
13861 offp = &ent->got.offset;
13862 got = ppc64_elf_tdata (ent->owner)->got;
13866 /* The offset must always be a multiple of 8. We use the
13867 least significant bit to record whether we have already
13868 processed this entry. */
13870 if ((off & 1) != 0)
13874 /* Generate relocs for the dynamic linker, except in
13875 the case of TLSLD where we'll use one entry per
13883 ? h->elf.type == STT_GNU_IFUNC
13884 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
13886 relgot = htab->reliplt;
13887 else if ((info->shared || indx != 0)
13889 || (tls_type == (TLS_TLS | TLS_LD)
13890 && !h->elf.def_dynamic)
13891 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13892 || h->elf.root.type != bfd_link_hash_undefweak))
13893 relgot = ppc64_elf_tdata (ent->owner)->relgot;
13894 if (relgot != NULL)
13896 outrel.r_offset = (got->output_section->vma
13897 + got->output_offset
13899 outrel.r_addend = addend;
13900 if (tls_type & (TLS_LD | TLS_GD))
13902 outrel.r_addend = 0;
13903 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
13904 if (tls_type == (TLS_TLS | TLS_GD))
13906 loc = relgot->contents;
13907 loc += (relgot->reloc_count++
13908 * sizeof (Elf64_External_Rela));
13909 bfd_elf64_swap_reloca_out (output_bfd,
13911 outrel.r_offset += 8;
13912 outrel.r_addend = addend;
13914 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13917 else if (tls_type == (TLS_TLS | TLS_DTPREL))
13918 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
13919 else if (tls_type == (TLS_TLS | TLS_TPREL))
13920 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
13921 else if (indx != 0)
13922 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13926 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13928 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
13930 /* Write the .got section contents for the sake
13932 loc = got->contents + off;
13933 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13937 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
13939 outrel.r_addend += relocation;
13940 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
13941 outrel.r_addend -= htab->elf.tls_sec->vma;
13943 loc = relgot->contents;
13944 loc += (relgot->reloc_count++
13945 * sizeof (Elf64_External_Rela));
13946 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13949 /* Init the .got section contents here if we're not
13950 emitting a reloc. */
13953 relocation += addend;
13954 if (tls_type == (TLS_TLS | TLS_LD))
13956 else if (tls_type != 0)
13958 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
13959 if (tls_type == (TLS_TLS | TLS_TPREL))
13960 relocation += DTP_OFFSET - TP_OFFSET;
13962 if (tls_type == (TLS_TLS | TLS_GD))
13964 bfd_put_64 (output_bfd, relocation,
13965 got->contents + off + 8);
13970 bfd_put_64 (output_bfd, relocation,
13971 got->contents + off);
13975 if (off >= (bfd_vma) -2)
13978 relocation = got->output_section->vma + got->output_offset + off;
13979 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
13983 case R_PPC64_PLT16_HA:
13984 case R_PPC64_PLT16_HI:
13985 case R_PPC64_PLT16_LO:
13986 case R_PPC64_PLT32:
13987 case R_PPC64_PLT64:
13988 /* Relocation is to the entry for this symbol in the
13989 procedure linkage table. */
13991 /* Resolve a PLT reloc against a local symbol directly,
13992 without using the procedure linkage table. */
13996 /* It's possible that we didn't make a PLT entry for this
13997 symbol. This happens when statically linking PIC code,
13998 or when using -Bsymbolic. Go find a match if there is a
14000 if (htab->plt != NULL)
14002 struct plt_entry *ent;
14003 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
14004 if (ent->plt.offset != (bfd_vma) -1
14005 && ent->addend == orig_rel.r_addend)
14007 relocation = (htab->plt->output_section->vma
14008 + htab->plt->output_offset
14009 + ent->plt.offset);
14010 unresolved_reloc = FALSE;
14017 /* Relocation value is TOC base. */
14018 relocation = TOCstart;
14019 if (r_symndx == STN_UNDEF)
14020 relocation += htab->stub_group[input_section->id].toc_off;
14021 else if (unresolved_reloc)
14023 else if (sec != NULL && sec->id <= htab->top_id)
14024 relocation += htab->stub_group[sec->id].toc_off;
14026 unresolved_reloc = TRUE;
14029 /* TOC16 relocs. We want the offset relative to the TOC base,
14030 which is the address of the start of the TOC plus 0x8000.
14031 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14033 case R_PPC64_TOC16:
14034 case R_PPC64_TOC16_LO:
14035 case R_PPC64_TOC16_HI:
14036 case R_PPC64_TOC16_DS:
14037 case R_PPC64_TOC16_LO_DS:
14038 case R_PPC64_TOC16_HA:
14039 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
14042 /* Relocate against the beginning of the section. */
14043 case R_PPC64_SECTOFF:
14044 case R_PPC64_SECTOFF_LO:
14045 case R_PPC64_SECTOFF_HI:
14046 case R_PPC64_SECTOFF_DS:
14047 case R_PPC64_SECTOFF_LO_DS:
14048 case R_PPC64_SECTOFF_HA:
14050 addend -= sec->output_section->vma;
14053 case R_PPC64_REL16:
14054 case R_PPC64_REL16_LO:
14055 case R_PPC64_REL16_HI:
14056 case R_PPC64_REL16_HA:
14059 case R_PPC64_REL14:
14060 case R_PPC64_REL14_BRNTAKEN:
14061 case R_PPC64_REL14_BRTAKEN:
14062 case R_PPC64_REL24:
14065 case R_PPC64_TPREL16:
14066 case R_PPC64_TPREL16_LO:
14067 case R_PPC64_TPREL16_HI:
14068 case R_PPC64_TPREL16_HA:
14069 case R_PPC64_TPREL16_DS:
14070 case R_PPC64_TPREL16_LO_DS:
14071 case R_PPC64_TPREL16_HIGH:
14072 case R_PPC64_TPREL16_HIGHA:
14073 case R_PPC64_TPREL16_HIGHER:
14074 case R_PPC64_TPREL16_HIGHERA:
14075 case R_PPC64_TPREL16_HIGHEST:
14076 case R_PPC64_TPREL16_HIGHESTA:
14078 && h->elf.root.type == bfd_link_hash_undefweak
14079 && h->elf.dynindx == -1)
14081 /* Make this relocation against an undefined weak symbol
14082 resolve to zero. This is really just a tweak, since
14083 code using weak externs ought to check that they are
14084 defined before using them. */
14085 bfd_byte *p = contents + rel->r_offset - d_offset;
14087 insn = bfd_get_32 (output_bfd, p);
14088 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14090 bfd_put_32 (output_bfd, insn, p);
14093 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14095 /* The TPREL16 relocs shouldn't really be used in shared
14096 libs as they will result in DT_TEXTREL being set, but
14097 support them anyway. */
14101 case R_PPC64_DTPREL16:
14102 case R_PPC64_DTPREL16_LO:
14103 case R_PPC64_DTPREL16_HI:
14104 case R_PPC64_DTPREL16_HA:
14105 case R_PPC64_DTPREL16_DS:
14106 case R_PPC64_DTPREL16_LO_DS:
14107 case R_PPC64_DTPREL16_HIGH:
14108 case R_PPC64_DTPREL16_HIGHA:
14109 case R_PPC64_DTPREL16_HIGHER:
14110 case R_PPC64_DTPREL16_HIGHERA:
14111 case R_PPC64_DTPREL16_HIGHEST:
14112 case R_PPC64_DTPREL16_HIGHESTA:
14113 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14116 case R_PPC64_DTPMOD64:
14121 case R_PPC64_TPREL64:
14122 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
14125 case R_PPC64_DTPREL64:
14126 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
14129 /* Relocations that may need to be propagated if this is a
14131 case R_PPC64_REL30:
14132 case R_PPC64_REL32:
14133 case R_PPC64_REL64:
14134 case R_PPC64_ADDR14:
14135 case R_PPC64_ADDR14_BRNTAKEN:
14136 case R_PPC64_ADDR14_BRTAKEN:
14137 case R_PPC64_ADDR16:
14138 case R_PPC64_ADDR16_DS:
14139 case R_PPC64_ADDR16_HA:
14140 case R_PPC64_ADDR16_HI:
14141 case R_PPC64_ADDR16_HIGH:
14142 case R_PPC64_ADDR16_HIGHA:
14143 case R_PPC64_ADDR16_HIGHER:
14144 case R_PPC64_ADDR16_HIGHERA:
14145 case R_PPC64_ADDR16_HIGHEST:
14146 case R_PPC64_ADDR16_HIGHESTA:
14147 case R_PPC64_ADDR16_LO:
14148 case R_PPC64_ADDR16_LO_DS:
14149 case R_PPC64_ADDR24:
14150 case R_PPC64_ADDR32:
14151 case R_PPC64_ADDR64:
14152 case R_PPC64_UADDR16:
14153 case R_PPC64_UADDR32:
14154 case R_PPC64_UADDR64:
14156 if ((input_section->flags & SEC_ALLOC) == 0)
14159 if (NO_OPD_RELOCS && is_opd)
14164 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14165 || h->elf.root.type != bfd_link_hash_undefweak)
14166 && (must_be_dyn_reloc (info, r_type)
14167 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
14168 || (ELIMINATE_COPY_RELOCS
14171 && h->elf.dynindx != -1
14172 && !h->elf.non_got_ref
14173 && !h->elf.def_regular)
14176 ? h->elf.type == STT_GNU_IFUNC
14177 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
14179 bfd_boolean skip, relocate;
14183 /* When generating a dynamic object, these relocations
14184 are copied into the output file to be resolved at run
14190 out_off = _bfd_elf_section_offset (output_bfd, info,
14191 input_section, rel->r_offset);
14192 if (out_off == (bfd_vma) -1)
14194 else if (out_off == (bfd_vma) -2)
14195 skip = TRUE, relocate = TRUE;
14196 out_off += (input_section->output_section->vma
14197 + input_section->output_offset);
14198 outrel.r_offset = out_off;
14199 outrel.r_addend = rel->r_addend;
14201 /* Optimize unaligned reloc use. */
14202 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14203 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14204 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14205 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14206 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14207 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14208 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14209 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14210 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14213 memset (&outrel, 0, sizeof outrel);
14214 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
14216 && r_type != R_PPC64_TOC)
14218 BFD_ASSERT (h->elf.dynindx != -1);
14219 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14223 /* This symbol is local, or marked to become local,
14224 or this is an opd section reloc which must point
14225 at a local function. */
14226 outrel.r_addend += relocation;
14227 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
14229 if (is_opd && h != NULL)
14231 /* Lie about opd entries. This case occurs
14232 when building shared libraries and we
14233 reference a function in another shared
14234 lib. The same thing happens for a weak
14235 definition in an application that's
14236 overridden by a strong definition in a
14237 shared lib. (I believe this is a generic
14238 bug in binutils handling of weak syms.)
14239 In these cases we won't use the opd
14240 entry in this lib. */
14241 unresolved_reloc = FALSE;
14244 && r_type == R_PPC64_ADDR64
14246 ? h->elf.type == STT_GNU_IFUNC
14247 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14248 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14251 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
14253 /* We need to relocate .opd contents for ld.so.
14254 Prelink also wants simple and consistent rules
14255 for relocs. This make all RELATIVE relocs have
14256 *r_offset equal to r_addend. */
14265 ? h->elf.type == STT_GNU_IFUNC
14266 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14268 info->callbacks->einfo
14269 (_("%P: %H: %s for indirect "
14270 "function `%T' unsupported\n"),
14271 input_bfd, input_section, rel->r_offset,
14272 ppc64_elf_howto_table[r_type]->name,
14276 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
14278 else if (sec == NULL || sec->owner == NULL)
14280 bfd_set_error (bfd_error_bad_value);
14287 osec = sec->output_section;
14288 indx = elf_section_data (osec)->dynindx;
14292 if ((osec->flags & SEC_READONLY) == 0
14293 && htab->elf.data_index_section != NULL)
14294 osec = htab->elf.data_index_section;
14296 osec = htab->elf.text_index_section;
14297 indx = elf_section_data (osec)->dynindx;
14299 BFD_ASSERT (indx != 0);
14301 /* We are turning this relocation into one
14302 against a section symbol, so subtract out
14303 the output section's address but not the
14304 offset of the input section in the output
14306 outrel.r_addend -= osec->vma;
14309 outrel.r_info = ELF64_R_INFO (indx, r_type);
14313 sreloc = elf_section_data (input_section)->sreloc;
14315 ? h->elf.type == STT_GNU_IFUNC
14316 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14317 sreloc = htab->reliplt;
14318 if (sreloc == NULL)
14321 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14324 loc = sreloc->contents;
14325 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
14326 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14328 /* If this reloc is against an external symbol, it will
14329 be computed at runtime, so there's no need to do
14330 anything now. However, for the sake of prelink ensure
14331 that the section contents are a known value. */
14334 unresolved_reloc = FALSE;
14335 /* The value chosen here is quite arbitrary as ld.so
14336 ignores section contents except for the special
14337 case of .opd where the contents might be accessed
14338 before relocation. Choose zero, as that won't
14339 cause reloc overflow. */
14342 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14343 to improve backward compatibility with older
14345 if (r_type == R_PPC64_ADDR64)
14346 addend = outrel.r_addend;
14347 /* Adjust pc_relative relocs to have zero in *r_offset. */
14348 else if (ppc64_elf_howto_table[r_type]->pc_relative)
14349 addend = (input_section->output_section->vma
14350 + input_section->output_offset
14357 case R_PPC64_GLOB_DAT:
14358 case R_PPC64_JMP_SLOT:
14359 case R_PPC64_JMP_IREL:
14360 case R_PPC64_RELATIVE:
14361 /* We shouldn't ever see these dynamic relocs in relocatable
14363 /* Fall through. */
14365 case R_PPC64_PLTGOT16:
14366 case R_PPC64_PLTGOT16_DS:
14367 case R_PPC64_PLTGOT16_HA:
14368 case R_PPC64_PLTGOT16_HI:
14369 case R_PPC64_PLTGOT16_LO:
14370 case R_PPC64_PLTGOT16_LO_DS:
14371 case R_PPC64_PLTREL32:
14372 case R_PPC64_PLTREL64:
14373 /* These ones haven't been implemented yet. */
14375 info->callbacks->einfo
14376 (_("%P: %B: %s is not supported for `%T'\n"),
14378 ppc64_elf_howto_table[r_type]->name, sym_name);
14380 bfd_set_error (bfd_error_invalid_operation);
14385 /* Multi-instruction sequences that access the TOC can be
14386 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14387 to nop; addi rb,r2,x; */
14393 case R_PPC64_GOT_TLSLD16_HI:
14394 case R_PPC64_GOT_TLSGD16_HI:
14395 case R_PPC64_GOT_TPREL16_HI:
14396 case R_PPC64_GOT_DTPREL16_HI:
14397 case R_PPC64_GOT16_HI:
14398 case R_PPC64_TOC16_HI:
14399 /* These relocs would only be useful if building up an
14400 offset to later add to r2, perhaps in an indexed
14401 addressing mode instruction. Don't try to optimize.
14402 Unfortunately, the possibility of someone building up an
14403 offset like this or even with the HA relocs, means that
14404 we need to check the high insn when optimizing the low
14408 case R_PPC64_GOT_TLSLD16_HA:
14409 case R_PPC64_GOT_TLSGD16_HA:
14410 case R_PPC64_GOT_TPREL16_HA:
14411 case R_PPC64_GOT_DTPREL16_HA:
14412 case R_PPC64_GOT16_HA:
14413 case R_PPC64_TOC16_HA:
14414 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14415 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14417 bfd_byte *p = contents + (rel->r_offset & ~3);
14418 bfd_put_32 (input_bfd, NOP, p);
14422 case R_PPC64_GOT_TLSLD16_LO:
14423 case R_PPC64_GOT_TLSGD16_LO:
14424 case R_PPC64_GOT_TPREL16_LO_DS:
14425 case R_PPC64_GOT_DTPREL16_LO_DS:
14426 case R_PPC64_GOT16_LO:
14427 case R_PPC64_GOT16_LO_DS:
14428 case R_PPC64_TOC16_LO:
14429 case R_PPC64_TOC16_LO_DS:
14430 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
14431 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
14433 bfd_byte *p = contents + (rel->r_offset & ~3);
14434 insn = bfd_get_32 (input_bfd, p);
14435 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14437 /* Transform addic to addi when we change reg. */
14438 insn &= ~((0x3f << 26) | (0x1f << 16));
14439 insn |= (14u << 26) | (2 << 16);
14443 insn &= ~(0x1f << 16);
14446 bfd_put_32 (input_bfd, insn, p);
14451 /* Do any further special processing. */
14457 case R_PPC64_REL16_HA:
14458 case R_PPC64_ADDR16_HA:
14459 case R_PPC64_ADDR16_HIGHA:
14460 case R_PPC64_ADDR16_HIGHERA:
14461 case R_PPC64_ADDR16_HIGHESTA:
14462 case R_PPC64_TOC16_HA:
14463 case R_PPC64_SECTOFF_HA:
14464 case R_PPC64_TPREL16_HA:
14465 case R_PPC64_TPREL16_HIGHA:
14466 case R_PPC64_TPREL16_HIGHERA:
14467 case R_PPC64_TPREL16_HIGHESTA:
14468 case R_PPC64_DTPREL16_HA:
14469 case R_PPC64_DTPREL16_HIGHA:
14470 case R_PPC64_DTPREL16_HIGHERA:
14471 case R_PPC64_DTPREL16_HIGHESTA:
14472 /* It's just possible that this symbol is a weak symbol
14473 that's not actually defined anywhere. In that case,
14474 'sec' would be NULL, and we should leave the symbol
14475 alone (it will be set to zero elsewhere in the link). */
14480 case R_PPC64_GOT16_HA:
14481 case R_PPC64_PLTGOT16_HA:
14482 case R_PPC64_PLT16_HA:
14483 case R_PPC64_GOT_TLSGD16_HA:
14484 case R_PPC64_GOT_TLSLD16_HA:
14485 case R_PPC64_GOT_TPREL16_HA:
14486 case R_PPC64_GOT_DTPREL16_HA:
14487 /* Add 0x10000 if sign bit in 0:15 is set.
14488 Bits 0:15 are not used. */
14492 case R_PPC64_ADDR16_DS:
14493 case R_PPC64_ADDR16_LO_DS:
14494 case R_PPC64_GOT16_DS:
14495 case R_PPC64_GOT16_LO_DS:
14496 case R_PPC64_PLT16_LO_DS:
14497 case R_PPC64_SECTOFF_DS:
14498 case R_PPC64_SECTOFF_LO_DS:
14499 case R_PPC64_TOC16_DS:
14500 case R_PPC64_TOC16_LO_DS:
14501 case R_PPC64_PLTGOT16_DS:
14502 case R_PPC64_PLTGOT16_LO_DS:
14503 case R_PPC64_GOT_TPREL16_DS:
14504 case R_PPC64_GOT_TPREL16_LO_DS:
14505 case R_PPC64_GOT_DTPREL16_DS:
14506 case R_PPC64_GOT_DTPREL16_LO_DS:
14507 case R_PPC64_TPREL16_DS:
14508 case R_PPC64_TPREL16_LO_DS:
14509 case R_PPC64_DTPREL16_DS:
14510 case R_PPC64_DTPREL16_LO_DS:
14511 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14513 /* If this reloc is against an lq insn, then the value must be
14514 a multiple of 16. This is somewhat of a hack, but the
14515 "correct" way to do this by defining _DQ forms of all the
14516 _DS relocs bloats all reloc switches in this file. It
14517 doesn't seem to make much sense to use any of these relocs
14518 in data, so testing the insn should be safe. */
14519 if ((insn & (0x3f << 26)) == (56u << 26))
14521 if (((relocation + addend) & mask) != 0)
14523 info->callbacks->einfo
14524 (_("%P: %H: error: %s not a multiple of %u\n"),
14525 input_bfd, input_section, rel->r_offset,
14526 ppc64_elf_howto_table[r_type]->name,
14528 bfd_set_error (bfd_error_bad_value);
14535 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14536 because such sections are not SEC_ALLOC and thus ld.so will
14537 not process them. */
14538 if (unresolved_reloc
14539 && !((input_section->flags & SEC_DEBUGGING) != 0
14540 && h->elf.def_dynamic)
14541 && _bfd_elf_section_offset (output_bfd, info, input_section,
14542 rel->r_offset) != (bfd_vma) -1)
14544 info->callbacks->einfo
14545 (_("%P: %H: unresolvable %s against `%T'\n"),
14546 input_bfd, input_section, rel->r_offset,
14547 ppc64_elf_howto_table[(int) r_type]->name,
14548 h->elf.root.root.string);
14552 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
14560 if (r != bfd_reloc_ok)
14562 char *more_info = NULL;
14563 const char *reloc_name = ppc64_elf_howto_table[r_type]->name;
14565 if (reloc_dest != DEST_NORMAL)
14567 more_info = bfd_malloc (strlen (reloc_name) + 8);
14568 if (more_info != NULL)
14570 strcpy (more_info, reloc_name);
14571 strcat (more_info, (reloc_dest == DEST_OPD
14572 ? " (OPD)" : " (stub)"));
14573 reloc_name = more_info;
14577 if (r == bfd_reloc_overflow)
14582 && h->elf.root.type == bfd_link_hash_undefweak
14583 && ppc64_elf_howto_table[r_type]->pc_relative)
14585 /* Assume this is a call protected by other code that
14586 detects the symbol is undefined. If this is the case,
14587 we can safely ignore the overflow. If not, the
14588 program is hosed anyway, and a little warning isn't
14594 if (!((*info->callbacks->reloc_overflow)
14595 (info, &h->elf.root, sym_name,
14596 reloc_name, orig_rel.r_addend,
14597 input_bfd, input_section, rel->r_offset)))
14602 info->callbacks->einfo
14603 (_("%P: %H: %s against `%T': error %d\n"),
14604 input_bfd, input_section, rel->r_offset,
14605 reloc_name, sym_name, (int) r);
14608 if (more_info != NULL)
14613 /* If we're emitting relocations, then shortly after this function
14614 returns, reloc offsets and addends for this section will be
14615 adjusted. Worse, reloc symbol indices will be for the output
14616 file rather than the input. Save a copy of the relocs for
14617 opd_entry_value. */
14618 if (is_opd && (info->emitrelocations || info->relocatable))
14621 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14622 rel = bfd_alloc (input_bfd, amt);
14623 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14624 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
14627 memcpy (rel, relocs, amt);
14632 /* Adjust the value of any local symbols in opd sections. */
14635 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14636 const char *name ATTRIBUTE_UNUSED,
14637 Elf_Internal_Sym *elfsym,
14638 asection *input_sec,
14639 struct elf_link_hash_entry *h)
14641 struct _opd_sec_data *opd;
14648 opd = get_opd_info (input_sec);
14649 if (opd == NULL || opd->adjust == NULL)
14652 value = elfsym->st_value - input_sec->output_offset;
14653 if (!info->relocatable)
14654 value -= input_sec->output_section->vma;
14656 adjust = opd->adjust[value / 8];
14660 elfsym->st_value += adjust;
14664 /* Finish up dynamic symbol handling. We set the contents of various
14665 dynamic sections here. */
14668 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14669 struct bfd_link_info *info,
14670 struct elf_link_hash_entry *h,
14671 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
14673 struct ppc_link_hash_table *htab;
14674 struct plt_entry *ent;
14675 Elf_Internal_Rela rela;
14678 htab = ppc_hash_table (info);
14682 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14683 if (ent->plt.offset != (bfd_vma) -1)
14685 /* This symbol has an entry in the procedure linkage
14686 table. Set it up. */
14687 if (!htab->elf.dynamic_sections_created
14688 || h->dynindx == -1)
14690 BFD_ASSERT (h->type == STT_GNU_IFUNC
14692 && (h->root.type == bfd_link_hash_defined
14693 || h->root.type == bfd_link_hash_defweak));
14694 rela.r_offset = (htab->iplt->output_section->vma
14695 + htab->iplt->output_offset
14696 + ent->plt.offset);
14698 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14700 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14701 rela.r_addend = (h->root.u.def.value
14702 + h->root.u.def.section->output_offset
14703 + h->root.u.def.section->output_section->vma
14705 loc = (htab->reliplt->contents
14706 + (htab->reliplt->reloc_count++
14707 * sizeof (Elf64_External_Rela)));
14711 rela.r_offset = (htab->plt->output_section->vma
14712 + htab->plt->output_offset
14713 + ent->plt.offset);
14714 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14715 rela.r_addend = ent->addend;
14716 loc = (htab->relplt->contents
14717 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14718 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
14720 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14722 if (!htab->opd_abi)
14724 if (!h->def_regular)
14726 /* Mark the symbol as undefined, rather than as
14727 defined in glink. Leave the value if there were
14728 any relocations where pointer equality matters
14729 (this is a clue for the dynamic linker, to make
14730 function pointer comparisons work between an
14731 application and shared library), otherwise set it
14733 sym->st_shndx = SHN_UNDEF;
14734 if (!h->pointer_equality_needed)
14736 else if (!h->ref_regular_nonweak)
14738 /* This breaks function pointer comparisons, but
14739 that is better than breaking tests for a NULL
14740 function pointer. */
14749 /* This symbol needs a copy reloc. Set it up. */
14751 if (h->dynindx == -1
14752 || (h->root.type != bfd_link_hash_defined
14753 && h->root.type != bfd_link_hash_defweak)
14754 || htab->relbss == NULL)
14757 rela.r_offset = (h->root.u.def.value
14758 + h->root.u.def.section->output_section->vma
14759 + h->root.u.def.section->output_offset);
14760 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14762 loc = htab->relbss->contents;
14763 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
14764 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
14770 /* Used to decide how to sort relocs in an optimal manner for the
14771 dynamic linker, before writing them out. */
14773 static enum elf_reloc_type_class
14774 ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14775 const asection *rel_sec,
14776 const Elf_Internal_Rela *rela)
14778 enum elf_ppc64_reloc_type r_type;
14779 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14781 if (rel_sec == htab->reliplt)
14782 return reloc_class_ifunc;
14784 r_type = ELF64_R_TYPE (rela->r_info);
14787 case R_PPC64_RELATIVE:
14788 return reloc_class_relative;
14789 case R_PPC64_JMP_SLOT:
14790 return reloc_class_plt;
14792 return reloc_class_copy;
14794 return reloc_class_normal;
14798 /* Finish up the dynamic sections. */
14801 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14802 struct bfd_link_info *info)
14804 struct ppc_link_hash_table *htab;
14808 htab = ppc_hash_table (info);
14812 dynobj = htab->elf.dynobj;
14813 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
14815 if (htab->elf.dynamic_sections_created)
14817 Elf64_External_Dyn *dyncon, *dynconend;
14819 if (sdyn == NULL || htab->got == NULL)
14822 dyncon = (Elf64_External_Dyn *) sdyn->contents;
14823 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
14824 for (; dyncon < dynconend; dyncon++)
14826 Elf_Internal_Dyn dyn;
14829 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14836 case DT_PPC64_GLINK:
14838 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14839 /* We stupidly defined DT_PPC64_GLINK to be the start
14840 of glink rather than the first entry point, which is
14841 what ld.so needs, and now have a bigger stub to
14842 support automatic multiple TOCs. */
14843 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
14847 s = bfd_get_section_by_name (output_bfd, ".opd");
14850 dyn.d_un.d_ptr = s->vma;
14854 if (htab->do_multi_toc && htab->multi_toc_needed)
14855 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
14858 case DT_PPC64_OPDSZ:
14859 s = bfd_get_section_by_name (output_bfd, ".opd");
14862 dyn.d_un.d_val = s->size;
14867 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14872 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
14876 dyn.d_un.d_val = htab->relplt->size;
14880 /* Don't count procedure linkage table relocs in the
14881 overall reloc count. */
14885 dyn.d_un.d_val -= s->size;
14889 /* We may not be using the standard ELF linker script.
14890 If .rela.plt is the first .rela section, we adjust
14891 DT_RELA to not include it. */
14895 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14897 dyn.d_un.d_ptr += s->size;
14901 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
14905 if (htab->got != NULL && htab->got->size != 0)
14907 /* Fill in the first entry in the global offset table.
14908 We use it to hold the link-time TOCbase. */
14909 bfd_put_64 (output_bfd,
14910 elf_gp (output_bfd) + TOC_BASE_OFF,
14911 htab->got->contents);
14913 /* Set .got entry size. */
14914 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
14917 if (htab->plt != NULL && htab->plt->size != 0)
14919 /* Set .plt entry size. */
14920 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
14921 = PLT_ENTRY_SIZE (htab);
14924 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14925 brlt ourselves if emitrelocations. */
14926 if (htab->brlt != NULL
14927 && htab->brlt->reloc_count != 0
14928 && !_bfd_elf_link_output_relocs (output_bfd,
14930 elf_section_data (htab->brlt)->rela.hdr,
14931 elf_section_data (htab->brlt)->relocs,
14935 if (htab->glink != NULL
14936 && htab->glink->reloc_count != 0
14937 && !_bfd_elf_link_output_relocs (output_bfd,
14939 elf_section_data (htab->glink)->rela.hdr,
14940 elf_section_data (htab->glink)->relocs,
14945 if (htab->glink_eh_frame != NULL
14946 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
14947 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14948 htab->glink_eh_frame,
14949 htab->glink_eh_frame->contents))
14952 /* We need to handle writing out multiple GOT sections ourselves,
14953 since we didn't add them to DYNOBJ. We know dynobj is the first
14955 while ((dynobj = dynobj->link_next) != NULL)
14959 if (!is_ppc64_elf (dynobj))
14962 s = ppc64_elf_tdata (dynobj)->got;
14965 && s->output_section != bfd_abs_section_ptr
14966 && !bfd_set_section_contents (output_bfd, s->output_section,
14967 s->contents, s->output_offset,
14970 s = ppc64_elf_tdata (dynobj)->relgot;
14973 && s->output_section != bfd_abs_section_ptr
14974 && !bfd_set_section_contents (output_bfd, s->output_section,
14975 s->contents, s->output_offset,
14983 #include "elf64-target.h"
14985 /* FreeBSD support */
14987 #undef TARGET_LITTLE_SYM
14988 #undef TARGET_LITTLE_NAME
14990 #undef TARGET_BIG_SYM
14991 #define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14992 #undef TARGET_BIG_NAME
14993 #define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14996 #define ELF_OSABI ELFOSABI_FREEBSD
14999 #define elf64_bed elf64_powerpc_fbsd_bed
15001 #include "elf64-target.h"