1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010 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"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *);
59 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_MACHINE_CODE EM_PPC64
65 #define ELF_MAXPAGESIZE 0x10000
66 #define ELF_COMMONPAGESIZE 0x1000
67 #define elf_info_to_howto ppc64_elf_info_to_howto
69 #define elf_backend_want_got_sym 0
70 #define elf_backend_want_plt_sym 0
71 #define elf_backend_plt_alignment 3
72 #define elf_backend_plt_not_loaded 1
73 #define elf_backend_got_header_size 8
74 #define elf_backend_can_gc_sections 1
75 #define elf_backend_can_refcount 1
76 #define elf_backend_rela_normal 1
77 #define elf_backend_default_execstack 0
79 #define bfd_elf64_mkobject ppc64_elf_mkobject
80 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
81 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
82 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
83 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
84 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
85 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
86 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
88 #define elf_backend_object_p ppc64_elf_object_p
89 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
90 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
91 #define elf_backend_write_core_note ppc64_elf_write_core_note
92 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
93 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
94 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
95 #define elf_backend_check_directives ppc64_elf_process_dot_syms
96 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
97 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
98 #define elf_backend_check_relocs ppc64_elf_check_relocs
99 #define elf_backend_gc_keep ppc64_elf_gc_keep
100 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
101 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
102 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
103 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
104 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
105 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
106 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
107 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
108 #define elf_backend_action_discarded ppc64_elf_action_discarded
109 #define elf_backend_relocate_section ppc64_elf_relocate_section
110 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
111 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
112 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
113 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
114 #define elf_backend_special_sections ppc64_elf_special_sections
115 #define elf_backend_post_process_headers _bfd_elf_set_osabi
117 /* The name of the dynamic interpreter. This is put in the .interp
119 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
121 /* The size in bytes of an entry in the procedure linkage table. */
122 #define PLT_ENTRY_SIZE 24
124 /* The initial size of the plt reserved for the dynamic linker. */
125 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
127 /* TOC base pointers offset from start of TOC. */
128 #define TOC_BASE_OFF 0x8000
130 /* Offset of tp and dtp pointers from start of TLS block. */
131 #define TP_OFFSET 0x7000
132 #define DTP_OFFSET 0x8000
134 /* .plt call stub instructions. The normal stub is like this, but
135 sometimes the .plt entry crosses a 64k boundary and we need to
136 insert an addi to adjust r12. */
137 #define PLT_CALL_STUB_SIZE (7*4)
138 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
139 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
140 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
141 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
142 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
143 /* ld %r11,xxx+16@l(%r12) */
144 #define BCTR 0x4e800420 /* bctr */
147 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
148 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
149 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
150 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
152 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
153 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
155 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
157 /* glink call stub instructions. We enter with the index in R0. */
158 #define GLINK_CALL_STUB_SIZE (16*4)
162 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
163 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
165 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
166 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
167 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
168 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
176 #define NOP 0x60000000
178 /* Some other nops. */
179 #define CROR_151515 0x4def7b82
180 #define CROR_313131 0x4ffffb82
182 /* .glink entries for the first 32k functions are two instructions. */
183 #define LI_R0_0 0x38000000 /* li %r0,0 */
184 #define B_DOT 0x48000000 /* b . */
186 /* After that, we need two instructions to load the index, followed by
188 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
189 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
191 /* Instructions used by the save and restore reg functions. */
192 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
193 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
194 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
195 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
196 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
197 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
198 #define LI_R12_0 0x39800000 /* li %r12,0 */
199 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
200 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
201 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
202 #define BLR 0x4e800020 /* blr */
204 /* Since .opd is an array of descriptors and each entry will end up
205 with identical R_PPC64_RELATIVE relocs, there is really no need to
206 propagate .opd relocs; The dynamic linker should be taught to
207 relocate .opd without reloc entries. */
208 #ifndef NO_OPD_RELOCS
209 #define NO_OPD_RELOCS 0
212 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
214 /* Relocation HOWTO's. */
215 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
217 static reloc_howto_type ppc64_elf_howto_raw[] = {
218 /* This reloc does nothing. */
219 HOWTO (R_PPC64_NONE, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE, /* pc_relative */
225 complain_overflow_dont, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC64_NONE", /* name */
228 FALSE, /* partial_inplace */
231 FALSE), /* pcrel_offset */
233 /* A standard 32 bit relocation. */
234 HOWTO (R_PPC64_ADDR32, /* type */
236 2, /* size (0 = byte, 1 = short, 2 = long) */
238 FALSE, /* pc_relative */
240 complain_overflow_bitfield, /* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_PPC64_ADDR32", /* name */
243 FALSE, /* partial_inplace */
245 0xffffffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
248 /* An absolute 26 bit branch; the lower two bits must be zero.
249 FIXME: we don't check that, we just clear them. */
250 HOWTO (R_PPC64_ADDR24, /* type */
252 2, /* size (0 = byte, 1 = short, 2 = long) */
254 FALSE, /* pc_relative */
256 complain_overflow_bitfield, /* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC64_ADDR24", /* name */
259 FALSE, /* partial_inplace */
261 0x03fffffc, /* dst_mask */
262 FALSE), /* pcrel_offset */
264 /* A standard 16 bit relocation. */
265 HOWTO (R_PPC64_ADDR16, /* type */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
269 FALSE, /* pc_relative */
271 complain_overflow_bitfield, /* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC64_ADDR16", /* name */
274 FALSE, /* partial_inplace */
276 0xffff, /* dst_mask */
277 FALSE), /* pcrel_offset */
279 /* A 16 bit relocation without overflow. */
280 HOWTO (R_PPC64_ADDR16_LO, /* type */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
284 FALSE, /* pc_relative */
286 complain_overflow_dont,/* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR16_LO", /* name */
289 FALSE, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
294 /* Bits 16-31 of an address. */
295 HOWTO (R_PPC64_ADDR16_HI, /* type */
297 1, /* size (0 = byte, 1 = short, 2 = long) */
299 FALSE, /* pc_relative */
301 complain_overflow_dont, /* complain_on_overflow */
302 bfd_elf_generic_reloc, /* special_function */
303 "R_PPC64_ADDR16_HI", /* name */
304 FALSE, /* partial_inplace */
306 0xffff, /* dst_mask */
307 FALSE), /* pcrel_offset */
309 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
310 bits, treated as a signed number, is negative. */
311 HOWTO (R_PPC64_ADDR16_HA, /* type */
313 1, /* size (0 = byte, 1 = short, 2 = long) */
315 FALSE, /* pc_relative */
317 complain_overflow_dont, /* complain_on_overflow */
318 ppc64_elf_ha_reloc, /* special_function */
319 "R_PPC64_ADDR16_HA", /* name */
320 FALSE, /* partial_inplace */
322 0xffff, /* dst_mask */
323 FALSE), /* pcrel_offset */
325 /* An absolute 16 bit branch; the lower two bits must be zero.
326 FIXME: we don't check that, we just clear them. */
327 HOWTO (R_PPC64_ADDR14, /* type */
329 2, /* size (0 = byte, 1 = short, 2 = long) */
331 FALSE, /* pc_relative */
333 complain_overflow_bitfield, /* complain_on_overflow */
334 ppc64_elf_branch_reloc, /* special_function */
335 "R_PPC64_ADDR14", /* name */
336 FALSE, /* partial_inplace */
338 0x0000fffc, /* dst_mask */
339 FALSE), /* pcrel_offset */
341 /* An absolute 16 bit branch, for which bit 10 should be set to
342 indicate that the branch is expected to be taken. The lower two
343 bits must be zero. */
344 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 FALSE, /* pc_relative */
350 complain_overflow_bitfield, /* complain_on_overflow */
351 ppc64_elf_brtaken_reloc, /* special_function */
352 "R_PPC64_ADDR14_BRTAKEN",/* name */
353 FALSE, /* partial_inplace */
355 0x0000fffc, /* dst_mask */
356 FALSE), /* pcrel_offset */
358 /* An absolute 16 bit branch, for which bit 10 should be set to
359 indicate that the branch is not expected to be taken. The lower
360 two bits must be zero. */
361 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
365 FALSE, /* pc_relative */
367 complain_overflow_bitfield, /* complain_on_overflow */
368 ppc64_elf_brtaken_reloc, /* special_function */
369 "R_PPC64_ADDR14_BRNTAKEN",/* name */
370 FALSE, /* partial_inplace */
372 0x0000fffc, /* dst_mask */
373 FALSE), /* pcrel_offset */
375 /* A relative 26 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL24, /* type */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
380 TRUE, /* pc_relative */
382 complain_overflow_signed, /* complain_on_overflow */
383 ppc64_elf_branch_reloc, /* special_function */
384 "R_PPC64_REL24", /* name */
385 FALSE, /* partial_inplace */
387 0x03fffffc, /* dst_mask */
388 TRUE), /* pcrel_offset */
390 /* A relative 16 bit branch; the lower two bits must be zero. */
391 HOWTO (R_PPC64_REL14, /* type */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
395 TRUE, /* pc_relative */
397 complain_overflow_signed, /* complain_on_overflow */
398 ppc64_elf_branch_reloc, /* special_function */
399 "R_PPC64_REL14", /* name */
400 FALSE, /* partial_inplace */
402 0x0000fffc, /* dst_mask */
403 TRUE), /* pcrel_offset */
405 /* A relative 16 bit branch. Bit 10 should be set to indicate that
406 the branch is expected to be taken. The lower two bits must be
408 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 TRUE, /* pc_relative */
414 complain_overflow_signed, /* complain_on_overflow */
415 ppc64_elf_brtaken_reloc, /* special_function */
416 "R_PPC64_REL14_BRTAKEN", /* name */
417 FALSE, /* partial_inplace */
419 0x0000fffc, /* dst_mask */
420 TRUE), /* pcrel_offset */
422 /* A relative 16 bit branch. Bit 10 should be set to indicate that
423 the branch is not expected to be taken. The lower two bits must
425 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
427 2, /* size (0 = byte, 1 = short, 2 = long) */
429 TRUE, /* pc_relative */
431 complain_overflow_signed, /* complain_on_overflow */
432 ppc64_elf_brtaken_reloc, /* special_function */
433 "R_PPC64_REL14_BRNTAKEN",/* name */
434 FALSE, /* partial_inplace */
436 0x0000fffc, /* dst_mask */
437 TRUE), /* pcrel_offset */
439 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
441 HOWTO (R_PPC64_GOT16, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE, /* pc_relative */
447 complain_overflow_signed, /* complain_on_overflow */
448 ppc64_elf_unhandled_reloc, /* special_function */
449 "R_PPC64_GOT16", /* name */
450 FALSE, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE), /* pcrel_offset */
455 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
457 HOWTO (R_PPC64_GOT16_LO, /* type */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
461 FALSE, /* pc_relative */
463 complain_overflow_dont, /* complain_on_overflow */
464 ppc64_elf_unhandled_reloc, /* special_function */
465 "R_PPC64_GOT16_LO", /* name */
466 FALSE, /* partial_inplace */
468 0xffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
471 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
473 HOWTO (R_PPC64_GOT16_HI, /* type */
475 1, /* size (0 = byte, 1 = short, 2 = long) */
477 FALSE, /* pc_relative */
479 complain_overflow_dont,/* complain_on_overflow */
480 ppc64_elf_unhandled_reloc, /* special_function */
481 "R_PPC64_GOT16_HI", /* name */
482 FALSE, /* partial_inplace */
484 0xffff, /* dst_mask */
485 FALSE), /* pcrel_offset */
487 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
489 HOWTO (R_PPC64_GOT16_HA, /* type */
491 1, /* size (0 = byte, 1 = short, 2 = long) */
493 FALSE, /* pc_relative */
495 complain_overflow_dont,/* complain_on_overflow */
496 ppc64_elf_unhandled_reloc, /* special_function */
497 "R_PPC64_GOT16_HA", /* name */
498 FALSE, /* partial_inplace */
500 0xffff, /* dst_mask */
501 FALSE), /* pcrel_offset */
503 /* This is used only by the dynamic linker. The symbol should exist
504 both in the object being run and in some shared library. The
505 dynamic linker copies the data addressed by the symbol from the
506 shared library into the object, because the object being
507 run has to have the data at some particular address. */
508 HOWTO (R_PPC64_COPY, /* type */
510 0, /* this one is variable size */
512 FALSE, /* pc_relative */
514 complain_overflow_dont, /* complain_on_overflow */
515 ppc64_elf_unhandled_reloc, /* special_function */
516 "R_PPC64_COPY", /* name */
517 FALSE, /* partial_inplace */
520 FALSE), /* pcrel_offset */
522 /* Like R_PPC64_ADDR64, but used when setting global offset table
524 HOWTO (R_PPC64_GLOB_DAT, /* type */
526 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
528 FALSE, /* pc_relative */
530 complain_overflow_dont, /* complain_on_overflow */
531 ppc64_elf_unhandled_reloc, /* special_function */
532 "R_PPC64_GLOB_DAT", /* name */
533 FALSE, /* partial_inplace */
535 ONES (64), /* dst_mask */
536 FALSE), /* pcrel_offset */
538 /* Created by the link editor. Marks a procedure linkage table
539 entry for a symbol. */
540 HOWTO (R_PPC64_JMP_SLOT, /* type */
542 0, /* size (0 = byte, 1 = short, 2 = long) */
544 FALSE, /* pc_relative */
546 complain_overflow_dont, /* complain_on_overflow */
547 ppc64_elf_unhandled_reloc, /* special_function */
548 "R_PPC64_JMP_SLOT", /* name */
549 FALSE, /* partial_inplace */
552 FALSE), /* pcrel_offset */
554 /* Used only by the dynamic linker. When the object is run, this
555 doubleword64 is set to the load address of the object, plus the
557 HOWTO (R_PPC64_RELATIVE, /* type */
559 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
561 FALSE, /* pc_relative */
563 complain_overflow_dont, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC64_RELATIVE", /* name */
566 FALSE, /* partial_inplace */
568 ONES (64), /* dst_mask */
569 FALSE), /* pcrel_offset */
571 /* Like R_PPC64_ADDR32, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR32, /* type */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
576 FALSE, /* pc_relative */
578 complain_overflow_bitfield, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC64_UADDR32", /* name */
581 FALSE, /* partial_inplace */
583 0xffffffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
586 /* Like R_PPC64_ADDR16, but may be unaligned. */
587 HOWTO (R_PPC64_UADDR16, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE, /* pc_relative */
593 complain_overflow_bitfield, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC64_UADDR16", /* name */
596 FALSE, /* partial_inplace */
598 0xffff, /* dst_mask */
599 FALSE), /* pcrel_offset */
601 /* 32-bit PC relative. */
602 HOWTO (R_PPC64_REL32, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 TRUE, /* pc_relative */
608 /* FIXME: Verify. Was complain_overflow_bitfield. */
609 complain_overflow_signed, /* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_PPC64_REL32", /* name */
612 FALSE, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 TRUE), /* pcrel_offset */
617 /* 32-bit relocation to the symbol's procedure linkage table. */
618 HOWTO (R_PPC64_PLT32, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE, /* pc_relative */
624 complain_overflow_bitfield, /* complain_on_overflow */
625 ppc64_elf_unhandled_reloc, /* special_function */
626 "R_PPC64_PLT32", /* name */
627 FALSE, /* partial_inplace */
629 0xffffffff, /* dst_mask */
630 FALSE), /* pcrel_offset */
632 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
633 FIXME: R_PPC64_PLTREL32 not supported. */
634 HOWTO (R_PPC64_PLTREL32, /* type */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
638 TRUE, /* pc_relative */
640 complain_overflow_signed, /* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_PPC64_PLTREL32", /* name */
643 FALSE, /* partial_inplace */
645 0xffffffff, /* dst_mask */
646 TRUE), /* pcrel_offset */
648 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
650 HOWTO (R_PPC64_PLT16_LO, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE, /* pc_relative */
656 complain_overflow_dont, /* complain_on_overflow */
657 ppc64_elf_unhandled_reloc, /* special_function */
658 "R_PPC64_PLT16_LO", /* name */
659 FALSE, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE), /* pcrel_offset */
664 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
666 HOWTO (R_PPC64_PLT16_HI, /* type */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
670 FALSE, /* pc_relative */
672 complain_overflow_dont, /* complain_on_overflow */
673 ppc64_elf_unhandled_reloc, /* special_function */
674 "R_PPC64_PLT16_HI", /* name */
675 FALSE, /* partial_inplace */
677 0xffff, /* dst_mask */
678 FALSE), /* pcrel_offset */
680 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
682 HOWTO (R_PPC64_PLT16_HA, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE, /* pc_relative */
688 complain_overflow_dont, /* complain_on_overflow */
689 ppc64_elf_unhandled_reloc, /* special_function */
690 "R_PPC64_PLT16_HA", /* name */
691 FALSE, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
696 /* 16-bit section relative relocation. */
697 HOWTO (R_PPC64_SECTOFF, /* type */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
701 FALSE, /* pc_relative */
703 complain_overflow_bitfield, /* complain_on_overflow */
704 ppc64_elf_sectoff_reloc, /* special_function */
705 "R_PPC64_SECTOFF", /* name */
706 FALSE, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE), /* pcrel_offset */
711 /* Like R_PPC64_SECTOFF, but no overflow warning. */
712 HOWTO (R_PPC64_SECTOFF_LO, /* type */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
716 FALSE, /* pc_relative */
718 complain_overflow_dont, /* complain_on_overflow */
719 ppc64_elf_sectoff_reloc, /* special_function */
720 "R_PPC64_SECTOFF_LO", /* name */
721 FALSE, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
726 /* 16-bit upper half section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HI, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE, /* pc_relative */
733 complain_overflow_dont, /* complain_on_overflow */
734 ppc64_elf_sectoff_reloc, /* special_function */
735 "R_PPC64_SECTOFF_HI", /* name */
736 FALSE, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE), /* pcrel_offset */
741 /* 16-bit upper half adjusted section relative relocation. */
742 HOWTO (R_PPC64_SECTOFF_HA, /* type */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
746 FALSE, /* pc_relative */
748 complain_overflow_dont, /* complain_on_overflow */
749 ppc64_elf_sectoff_ha_reloc, /* special_function */
750 "R_PPC64_SECTOFF_HA", /* name */
751 FALSE, /* partial_inplace */
753 0xffff, /* dst_mask */
754 FALSE), /* pcrel_offset */
756 /* Like R_PPC64_REL24 without touching the two least significant bits. */
757 HOWTO (R_PPC64_REL30, /* type */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
761 TRUE, /* pc_relative */
763 complain_overflow_dont, /* complain_on_overflow */
764 bfd_elf_generic_reloc, /* special_function */
765 "R_PPC64_REL30", /* name */
766 FALSE, /* partial_inplace */
768 0xfffffffc, /* dst_mask */
769 TRUE), /* pcrel_offset */
771 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
773 /* A standard 64-bit relocation. */
774 HOWTO (R_PPC64_ADDR64, /* type */
776 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
778 FALSE, /* pc_relative */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC64_ADDR64", /* name */
783 FALSE, /* partial_inplace */
785 ONES (64), /* dst_mask */
786 FALSE), /* pcrel_offset */
788 /* The bits 32-47 of an address. */
789 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
791 1, /* size (0 = byte, 1 = short, 2 = long) */
793 FALSE, /* pc_relative */
795 complain_overflow_dont, /* complain_on_overflow */
796 bfd_elf_generic_reloc, /* special_function */
797 "R_PPC64_ADDR16_HIGHER", /* name */
798 FALSE, /* partial_inplace */
800 0xffff, /* dst_mask */
801 FALSE), /* pcrel_offset */
803 /* The bits 32-47 of an address, plus 1 if the contents of the low
804 16 bits, treated as a signed number, is negative. */
805 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE, /* pc_relative */
811 complain_overflow_dont, /* complain_on_overflow */
812 ppc64_elf_ha_reloc, /* special_function */
813 "R_PPC64_ADDR16_HIGHERA", /* name */
814 FALSE, /* partial_inplace */
816 0xffff, /* dst_mask */
817 FALSE), /* pcrel_offset */
819 /* The bits 48-63 of an address. */
820 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
822 1, /* size (0 = byte, 1 = short, 2 = long) */
824 FALSE, /* pc_relative */
826 complain_overflow_dont, /* complain_on_overflow */
827 bfd_elf_generic_reloc, /* special_function */
828 "R_PPC64_ADDR16_HIGHEST", /* name */
829 FALSE, /* partial_inplace */
831 0xffff, /* dst_mask */
832 FALSE), /* pcrel_offset */
834 /* The bits 48-63 of an address, plus 1 if the contents of the low
835 16 bits, treated as a signed number, is negative. */
836 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
838 1, /* size (0 = byte, 1 = short, 2 = long) */
840 FALSE, /* pc_relative */
842 complain_overflow_dont, /* complain_on_overflow */
843 ppc64_elf_ha_reloc, /* special_function */
844 "R_PPC64_ADDR16_HIGHESTA", /* name */
845 FALSE, /* partial_inplace */
847 0xffff, /* dst_mask */
848 FALSE), /* pcrel_offset */
850 /* Like ADDR64, but may be unaligned. */
851 HOWTO (R_PPC64_UADDR64, /* type */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
855 FALSE, /* pc_relative */
857 complain_overflow_dont, /* complain_on_overflow */
858 bfd_elf_generic_reloc, /* special_function */
859 "R_PPC64_UADDR64", /* name */
860 FALSE, /* partial_inplace */
862 ONES (64), /* dst_mask */
863 FALSE), /* pcrel_offset */
865 /* 64-bit relative relocation. */
866 HOWTO (R_PPC64_REL64, /* type */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
870 TRUE, /* pc_relative */
872 complain_overflow_dont, /* complain_on_overflow */
873 bfd_elf_generic_reloc, /* special_function */
874 "R_PPC64_REL64", /* name */
875 FALSE, /* partial_inplace */
877 ONES (64), /* dst_mask */
878 TRUE), /* pcrel_offset */
880 /* 64-bit relocation to the symbol's procedure linkage table. */
881 HOWTO (R_PPC64_PLT64, /* type */
883 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
885 FALSE, /* pc_relative */
887 complain_overflow_dont, /* complain_on_overflow */
888 ppc64_elf_unhandled_reloc, /* special_function */
889 "R_PPC64_PLT64", /* name */
890 FALSE, /* partial_inplace */
892 ONES (64), /* dst_mask */
893 FALSE), /* pcrel_offset */
895 /* 64-bit PC relative relocation to the symbol's procedure linkage
897 /* FIXME: R_PPC64_PLTREL64 not supported. */
898 HOWTO (R_PPC64_PLTREL64, /* type */
900 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
902 TRUE, /* pc_relative */
904 complain_overflow_dont, /* complain_on_overflow */
905 ppc64_elf_unhandled_reloc, /* special_function */
906 "R_PPC64_PLTREL64", /* name */
907 FALSE, /* partial_inplace */
909 ONES (64), /* dst_mask */
910 TRUE), /* pcrel_offset */
912 /* 16 bit TOC-relative relocation. */
914 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
915 HOWTO (R_PPC64_TOC16, /* type */
917 1, /* size (0 = byte, 1 = short, 2 = long) */
919 FALSE, /* pc_relative */
921 complain_overflow_signed, /* complain_on_overflow */
922 ppc64_elf_toc_reloc, /* special_function */
923 "R_PPC64_TOC16", /* name */
924 FALSE, /* partial_inplace */
926 0xffff, /* dst_mask */
927 FALSE), /* pcrel_offset */
929 /* 16 bit TOC-relative relocation without overflow. */
931 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
932 HOWTO (R_PPC64_TOC16_LO, /* type */
934 1, /* size (0 = byte, 1 = short, 2 = long) */
936 FALSE, /* pc_relative */
938 complain_overflow_dont, /* complain_on_overflow */
939 ppc64_elf_toc_reloc, /* special_function */
940 "R_PPC64_TOC16_LO", /* name */
941 FALSE, /* partial_inplace */
943 0xffff, /* dst_mask */
944 FALSE), /* pcrel_offset */
946 /* 16 bit TOC-relative relocation, high 16 bits. */
948 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
949 HOWTO (R_PPC64_TOC16_HI, /* type */
951 1, /* size (0 = byte, 1 = short, 2 = long) */
953 FALSE, /* pc_relative */
955 complain_overflow_dont, /* complain_on_overflow */
956 ppc64_elf_toc_reloc, /* special_function */
957 "R_PPC64_TOC16_HI", /* name */
958 FALSE, /* partial_inplace */
960 0xffff, /* dst_mask */
961 FALSE), /* pcrel_offset */
963 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
964 contents of the low 16 bits, treated as a signed number, is
967 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
968 HOWTO (R_PPC64_TOC16_HA, /* type */
970 1, /* size (0 = byte, 1 = short, 2 = long) */
972 FALSE, /* pc_relative */
974 complain_overflow_dont, /* complain_on_overflow */
975 ppc64_elf_toc_ha_reloc, /* special_function */
976 "R_PPC64_TOC16_HA", /* name */
977 FALSE, /* partial_inplace */
979 0xffff, /* dst_mask */
980 FALSE), /* pcrel_offset */
982 /* 64-bit relocation; insert value of TOC base (.TOC.). */
984 /* R_PPC64_TOC 51 doubleword64 .TOC. */
985 HOWTO (R_PPC64_TOC, /* type */
987 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
989 FALSE, /* pc_relative */
991 complain_overflow_bitfield, /* complain_on_overflow */
992 ppc64_elf_toc64_reloc, /* special_function */
993 "R_PPC64_TOC", /* name */
994 FALSE, /* partial_inplace */
996 ONES (64), /* dst_mask */
997 FALSE), /* pcrel_offset */
999 /* Like R_PPC64_GOT16, but also informs the link editor that the
1000 value to relocate may (!) refer to a PLT entry which the link
1001 editor (a) may replace with the symbol value. If the link editor
1002 is unable to fully resolve the symbol, it may (b) create a PLT
1003 entry and store the address to the new PLT entry in the GOT.
1004 This permits lazy resolution of function symbols at run time.
1005 The link editor may also skip all of this and just (c) emit a
1006 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1007 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1008 HOWTO (R_PPC64_PLTGOT16, /* type */
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 FALSE, /* pc_relative */
1014 complain_overflow_signed, /* complain_on_overflow */
1015 ppc64_elf_unhandled_reloc, /* special_function */
1016 "R_PPC64_PLTGOT16", /* name */
1017 FALSE, /* partial_inplace */
1019 0xffff, /* dst_mask */
1020 FALSE), /* pcrel_offset */
1022 /* Like R_PPC64_PLTGOT16, but without overflow. */
1023 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1024 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1026 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 FALSE, /* pc_relative */
1030 complain_overflow_dont, /* complain_on_overflow */
1031 ppc64_elf_unhandled_reloc, /* special_function */
1032 "R_PPC64_PLTGOT16_LO", /* name */
1033 FALSE, /* partial_inplace */
1035 0xffff, /* dst_mask */
1036 FALSE), /* pcrel_offset */
1038 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1039 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1040 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1041 16, /* rightshift */
1042 1, /* size (0 = byte, 1 = short, 2 = long) */
1044 FALSE, /* pc_relative */
1046 complain_overflow_dont, /* complain_on_overflow */
1047 ppc64_elf_unhandled_reloc, /* special_function */
1048 "R_PPC64_PLTGOT16_HI", /* name */
1049 FALSE, /* partial_inplace */
1051 0xffff, /* dst_mask */
1052 FALSE), /* pcrel_offset */
1054 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1055 1 if the contents of the low 16 bits, treated as a signed number,
1057 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1058 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1059 16, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE, /* pc_relative */
1064 complain_overflow_dont,/* complain_on_overflow */
1065 ppc64_elf_unhandled_reloc, /* special_function */
1066 "R_PPC64_PLTGOT16_HA", /* name */
1067 FALSE, /* partial_inplace */
1069 0xffff, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1072 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_DS, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_bitfield, /* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_ADDR16_DS", /* name */
1082 FALSE, /* partial_inplace */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1087 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE, /* pc_relative */
1094 complain_overflow_dont,/* complain_on_overflow */
1095 bfd_elf_generic_reloc, /* special_function */
1096 "R_PPC64_ADDR16_LO_DS",/* name */
1097 FALSE, /* partial_inplace */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1102 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_DS, /* type */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE, /* pc_relative */
1109 complain_overflow_signed, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc, /* special_function */
1111 "R_PPC64_GOT16_DS", /* name */
1112 FALSE, /* partial_inplace */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1117 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE, /* pc_relative */
1124 complain_overflow_dont, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc, /* special_function */
1126 "R_PPC64_GOT16_LO_DS", /* name */
1127 FALSE, /* partial_inplace */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1132 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE, /* pc_relative */
1139 complain_overflow_dont, /* complain_on_overflow */
1140 ppc64_elf_unhandled_reloc, /* special_function */
1141 "R_PPC64_PLT16_LO_DS", /* name */
1142 FALSE, /* partial_inplace */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1147 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE, /* pc_relative */
1154 complain_overflow_bitfield, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc, /* special_function */
1156 "R_PPC64_SECTOFF_DS", /* name */
1157 FALSE, /* partial_inplace */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1162 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_dont, /* complain_on_overflow */
1170 ppc64_elf_sectoff_reloc, /* special_function */
1171 "R_PPC64_SECTOFF_LO_DS",/* name */
1172 FALSE, /* partial_inplace */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_DS, /* type */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE, /* pc_relative */
1184 complain_overflow_signed, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc, /* special_function */
1186 "R_PPC64_TOC16_DS", /* name */
1187 FALSE, /* partial_inplace */
1189 0xfffc, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1192 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1193 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1195 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 FALSE, /* pc_relative */
1199 complain_overflow_dont, /* complain_on_overflow */
1200 ppc64_elf_toc_reloc, /* special_function */
1201 "R_PPC64_TOC16_LO_DS", /* name */
1202 FALSE, /* partial_inplace */
1204 0xfffc, /* dst_mask */
1205 FALSE), /* pcrel_offset */
1207 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1208 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1209 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1211 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 FALSE, /* pc_relative */
1215 complain_overflow_signed, /* complain_on_overflow */
1216 ppc64_elf_unhandled_reloc, /* special_function */
1217 "R_PPC64_PLTGOT16_DS", /* name */
1218 FALSE, /* partial_inplace */
1220 0xfffc, /* dst_mask */
1221 FALSE), /* pcrel_offset */
1223 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1224 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1225 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1227 1, /* size (0 = byte, 1 = short, 2 = long) */
1229 FALSE, /* pc_relative */
1231 complain_overflow_dont, /* complain_on_overflow */
1232 ppc64_elf_unhandled_reloc, /* special_function */
1233 "R_PPC64_PLTGOT16_LO_DS",/* name */
1234 FALSE, /* partial_inplace */
1236 0xfffc, /* dst_mask */
1237 FALSE), /* pcrel_offset */
1239 /* Marker relocs for TLS. */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 FALSE, /* pc_relative */
1246 complain_overflow_dont, /* complain_on_overflow */
1247 bfd_elf_generic_reloc, /* special_function */
1248 "R_PPC64_TLS", /* name */
1249 FALSE, /* partial_inplace */
1252 FALSE), /* pcrel_offset */
1254 HOWTO (R_PPC64_TLSGD,
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1258 FALSE, /* pc_relative */
1260 complain_overflow_dont, /* complain_on_overflow */
1261 bfd_elf_generic_reloc, /* special_function */
1262 "R_PPC64_TLSGD", /* name */
1263 FALSE, /* partial_inplace */
1266 FALSE), /* pcrel_offset */
1268 HOWTO (R_PPC64_TLSLD,
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE, /* pc_relative */
1274 complain_overflow_dont, /* complain_on_overflow */
1275 bfd_elf_generic_reloc, /* special_function */
1276 "R_PPC64_TLSLD", /* name */
1277 FALSE, /* partial_inplace */
1280 FALSE), /* pcrel_offset */
1282 /* Computes the load module index of the load module that contains the
1283 definition of its TLS sym. */
1284 HOWTO (R_PPC64_DTPMOD64,
1286 4, /* size (0 = byte, 1 = short, 2 = long) */
1288 FALSE, /* pc_relative */
1290 complain_overflow_dont, /* complain_on_overflow */
1291 ppc64_elf_unhandled_reloc, /* special_function */
1292 "R_PPC64_DTPMOD64", /* name */
1293 FALSE, /* partial_inplace */
1295 ONES (64), /* dst_mask */
1296 FALSE), /* pcrel_offset */
1298 /* Computes a dtv-relative displacement, the difference between the value
1299 of sym+add and the base address of the thread-local storage block that
1300 contains the definition of sym, minus 0x8000. */
1301 HOWTO (R_PPC64_DTPREL64,
1303 4, /* size (0 = byte, 1 = short, 2 = long) */
1305 FALSE, /* pc_relative */
1307 complain_overflow_dont, /* complain_on_overflow */
1308 ppc64_elf_unhandled_reloc, /* special_function */
1309 "R_PPC64_DTPREL64", /* name */
1310 FALSE, /* partial_inplace */
1312 ONES (64), /* dst_mask */
1313 FALSE), /* pcrel_offset */
1315 /* A 16 bit dtprel reloc. */
1316 HOWTO (R_PPC64_DTPREL16,
1318 1, /* size (0 = byte, 1 = short, 2 = long) */
1320 FALSE, /* pc_relative */
1322 complain_overflow_signed, /* complain_on_overflow */
1323 ppc64_elf_unhandled_reloc, /* special_function */
1324 "R_PPC64_DTPREL16", /* name */
1325 FALSE, /* partial_inplace */
1327 0xffff, /* dst_mask */
1328 FALSE), /* pcrel_offset */
1330 /* Like DTPREL16, but no overflow. */
1331 HOWTO (R_PPC64_DTPREL16_LO,
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE, /* pc_relative */
1337 complain_overflow_dont, /* complain_on_overflow */
1338 ppc64_elf_unhandled_reloc, /* special_function */
1339 "R_PPC64_DTPREL16_LO", /* name */
1340 FALSE, /* partial_inplace */
1342 0xffff, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1345 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1346 HOWTO (R_PPC64_DTPREL16_HI,
1347 16, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 FALSE, /* pc_relative */
1352 complain_overflow_dont, /* complain_on_overflow */
1353 ppc64_elf_unhandled_reloc, /* special_function */
1354 "R_PPC64_DTPREL16_HI", /* name */
1355 FALSE, /* partial_inplace */
1357 0xffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1360 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1361 HOWTO (R_PPC64_DTPREL16_HA,
1362 16, /* rightshift */
1363 1, /* size (0 = byte, 1 = short, 2 = long) */
1365 FALSE, /* pc_relative */
1367 complain_overflow_dont, /* complain_on_overflow */
1368 ppc64_elf_unhandled_reloc, /* special_function */
1369 "R_PPC64_DTPREL16_HA", /* name */
1370 FALSE, /* partial_inplace */
1372 0xffff, /* dst_mask */
1373 FALSE), /* pcrel_offset */
1375 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1376 HOWTO (R_PPC64_DTPREL16_HIGHER,
1377 32, /* rightshift */
1378 1, /* size (0 = byte, 1 = short, 2 = long) */
1380 FALSE, /* pc_relative */
1382 complain_overflow_dont, /* complain_on_overflow */
1383 ppc64_elf_unhandled_reloc, /* special_function */
1384 "R_PPC64_DTPREL16_HIGHER", /* name */
1385 FALSE, /* partial_inplace */
1387 0xffff, /* dst_mask */
1388 FALSE), /* pcrel_offset */
1390 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1391 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1392 32, /* rightshift */
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1395 FALSE, /* pc_relative */
1397 complain_overflow_dont, /* complain_on_overflow */
1398 ppc64_elf_unhandled_reloc, /* special_function */
1399 "R_PPC64_DTPREL16_HIGHERA", /* name */
1400 FALSE, /* partial_inplace */
1402 0xffff, /* dst_mask */
1403 FALSE), /* pcrel_offset */
1405 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1406 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1407 48, /* rightshift */
1408 1, /* size (0 = byte, 1 = short, 2 = long) */
1410 FALSE, /* pc_relative */
1412 complain_overflow_dont, /* complain_on_overflow */
1413 ppc64_elf_unhandled_reloc, /* special_function */
1414 "R_PPC64_DTPREL16_HIGHEST", /* name */
1415 FALSE, /* partial_inplace */
1417 0xffff, /* dst_mask */
1418 FALSE), /* pcrel_offset */
1420 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1421 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1422 48, /* rightshift */
1423 1, /* size (0 = byte, 1 = short, 2 = long) */
1425 FALSE, /* pc_relative */
1427 complain_overflow_dont, /* complain_on_overflow */
1428 ppc64_elf_unhandled_reloc, /* special_function */
1429 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1430 FALSE, /* partial_inplace */
1432 0xffff, /* dst_mask */
1433 FALSE), /* pcrel_offset */
1435 /* Like DTPREL16, but for insns with a DS field. */
1436 HOWTO (R_PPC64_DTPREL16_DS,
1438 1, /* size (0 = byte, 1 = short, 2 = long) */
1440 FALSE, /* pc_relative */
1442 complain_overflow_signed, /* complain_on_overflow */
1443 ppc64_elf_unhandled_reloc, /* special_function */
1444 "R_PPC64_DTPREL16_DS", /* name */
1445 FALSE, /* partial_inplace */
1447 0xfffc, /* dst_mask */
1448 FALSE), /* pcrel_offset */
1450 /* Like DTPREL16_DS, but no overflow. */
1451 HOWTO (R_PPC64_DTPREL16_LO_DS,
1453 1, /* size (0 = byte, 1 = short, 2 = long) */
1455 FALSE, /* pc_relative */
1457 complain_overflow_dont, /* complain_on_overflow */
1458 ppc64_elf_unhandled_reloc, /* special_function */
1459 "R_PPC64_DTPREL16_LO_DS", /* name */
1460 FALSE, /* partial_inplace */
1462 0xfffc, /* dst_mask */
1463 FALSE), /* pcrel_offset */
1465 /* Computes a tp-relative displacement, the difference between the value of
1466 sym+add and the value of the thread pointer (r13). */
1467 HOWTO (R_PPC64_TPREL64,
1469 4, /* size (0 = byte, 1 = short, 2 = long) */
1471 FALSE, /* pc_relative */
1473 complain_overflow_dont, /* complain_on_overflow */
1474 ppc64_elf_unhandled_reloc, /* special_function */
1475 "R_PPC64_TPREL64", /* name */
1476 FALSE, /* partial_inplace */
1478 ONES (64), /* dst_mask */
1479 FALSE), /* pcrel_offset */
1481 /* A 16 bit tprel reloc. */
1482 HOWTO (R_PPC64_TPREL16,
1484 1, /* size (0 = byte, 1 = short, 2 = long) */
1486 FALSE, /* pc_relative */
1488 complain_overflow_signed, /* complain_on_overflow */
1489 ppc64_elf_unhandled_reloc, /* special_function */
1490 "R_PPC64_TPREL16", /* name */
1491 FALSE, /* partial_inplace */
1493 0xffff, /* dst_mask */
1494 FALSE), /* pcrel_offset */
1496 /* Like TPREL16, but no overflow. */
1497 HOWTO (R_PPC64_TPREL16_LO,
1499 1, /* size (0 = byte, 1 = short, 2 = long) */
1501 FALSE, /* pc_relative */
1503 complain_overflow_dont, /* complain_on_overflow */
1504 ppc64_elf_unhandled_reloc, /* special_function */
1505 "R_PPC64_TPREL16_LO", /* name */
1506 FALSE, /* partial_inplace */
1508 0xffff, /* dst_mask */
1509 FALSE), /* pcrel_offset */
1511 /* Like TPREL16_LO, but next higher group of 16 bits. */
1512 HOWTO (R_PPC64_TPREL16_HI,
1513 16, /* rightshift */
1514 1, /* size (0 = byte, 1 = short, 2 = long) */
1516 FALSE, /* pc_relative */
1518 complain_overflow_dont, /* complain_on_overflow */
1519 ppc64_elf_unhandled_reloc, /* special_function */
1520 "R_PPC64_TPREL16_HI", /* name */
1521 FALSE, /* partial_inplace */
1523 0xffff, /* dst_mask */
1524 FALSE), /* pcrel_offset */
1526 /* Like TPREL16_HI, but adjust for low 16 bits. */
1527 HOWTO (R_PPC64_TPREL16_HA,
1528 16, /* rightshift */
1529 1, /* size (0 = byte, 1 = short, 2 = long) */
1531 FALSE, /* pc_relative */
1533 complain_overflow_dont, /* complain_on_overflow */
1534 ppc64_elf_unhandled_reloc, /* special_function */
1535 "R_PPC64_TPREL16_HA", /* name */
1536 FALSE, /* partial_inplace */
1538 0xffff, /* dst_mask */
1539 FALSE), /* pcrel_offset */
1541 /* Like TPREL16_HI, but next higher group of 16 bits. */
1542 HOWTO (R_PPC64_TPREL16_HIGHER,
1543 32, /* rightshift */
1544 1, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE, /* pc_relative */
1548 complain_overflow_dont, /* complain_on_overflow */
1549 ppc64_elf_unhandled_reloc, /* special_function */
1550 "R_PPC64_TPREL16_HIGHER", /* name */
1551 FALSE, /* partial_inplace */
1553 0xffff, /* dst_mask */
1554 FALSE), /* pcrel_offset */
1556 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1557 HOWTO (R_PPC64_TPREL16_HIGHERA,
1558 32, /* rightshift */
1559 1, /* size (0 = byte, 1 = short, 2 = long) */
1561 FALSE, /* pc_relative */
1563 complain_overflow_dont, /* complain_on_overflow */
1564 ppc64_elf_unhandled_reloc, /* special_function */
1565 "R_PPC64_TPREL16_HIGHERA", /* name */
1566 FALSE, /* partial_inplace */
1568 0xffff, /* dst_mask */
1569 FALSE), /* pcrel_offset */
1571 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1572 HOWTO (R_PPC64_TPREL16_HIGHEST,
1573 48, /* rightshift */
1574 1, /* size (0 = byte, 1 = short, 2 = long) */
1576 FALSE, /* pc_relative */
1578 complain_overflow_dont, /* complain_on_overflow */
1579 ppc64_elf_unhandled_reloc, /* special_function */
1580 "R_PPC64_TPREL16_HIGHEST", /* name */
1581 FALSE, /* partial_inplace */
1583 0xffff, /* dst_mask */
1584 FALSE), /* pcrel_offset */
1586 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1587 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1588 48, /* rightshift */
1589 1, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE, /* pc_relative */
1593 complain_overflow_dont, /* complain_on_overflow */
1594 ppc64_elf_unhandled_reloc, /* special_function */
1595 "R_PPC64_TPREL16_HIGHESTA", /* name */
1596 FALSE, /* partial_inplace */
1598 0xffff, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1601 /* Like TPREL16, but for insns with a DS field. */
1602 HOWTO (R_PPC64_TPREL16_DS,
1604 1, /* size (0 = byte, 1 = short, 2 = long) */
1606 FALSE, /* pc_relative */
1608 complain_overflow_signed, /* complain_on_overflow */
1609 ppc64_elf_unhandled_reloc, /* special_function */
1610 "R_PPC64_TPREL16_DS", /* name */
1611 FALSE, /* partial_inplace */
1613 0xfffc, /* dst_mask */
1614 FALSE), /* pcrel_offset */
1616 /* Like TPREL16_DS, but no overflow. */
1617 HOWTO (R_PPC64_TPREL16_LO_DS,
1619 1, /* size (0 = byte, 1 = short, 2 = long) */
1621 FALSE, /* pc_relative */
1623 complain_overflow_dont, /* complain_on_overflow */
1624 ppc64_elf_unhandled_reloc, /* special_function */
1625 "R_PPC64_TPREL16_LO_DS", /* name */
1626 FALSE, /* partial_inplace */
1628 0xfffc, /* dst_mask */
1629 FALSE), /* pcrel_offset */
1631 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1632 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1633 to the first entry relative to the TOC base (r2). */
1634 HOWTO (R_PPC64_GOT_TLSGD16,
1636 1, /* size (0 = byte, 1 = short, 2 = long) */
1638 FALSE, /* pc_relative */
1640 complain_overflow_signed, /* complain_on_overflow */
1641 ppc64_elf_unhandled_reloc, /* special_function */
1642 "R_PPC64_GOT_TLSGD16", /* name */
1643 FALSE, /* partial_inplace */
1645 0xffff, /* dst_mask */
1646 FALSE), /* pcrel_offset */
1648 /* Like GOT_TLSGD16, but no overflow. */
1649 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1651 1, /* size (0 = byte, 1 = short, 2 = long) */
1653 FALSE, /* pc_relative */
1655 complain_overflow_dont, /* complain_on_overflow */
1656 ppc64_elf_unhandled_reloc, /* special_function */
1657 "R_PPC64_GOT_TLSGD16_LO", /* name */
1658 FALSE, /* partial_inplace */
1660 0xffff, /* dst_mask */
1661 FALSE), /* pcrel_offset */
1663 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1664 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1665 16, /* rightshift */
1666 1, /* size (0 = byte, 1 = short, 2 = long) */
1668 FALSE, /* pc_relative */
1670 complain_overflow_dont, /* complain_on_overflow */
1671 ppc64_elf_unhandled_reloc, /* special_function */
1672 "R_PPC64_GOT_TLSGD16_HI", /* name */
1673 FALSE, /* partial_inplace */
1675 0xffff, /* dst_mask */
1676 FALSE), /* pcrel_offset */
1678 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1679 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1680 16, /* rightshift */
1681 1, /* size (0 = byte, 1 = short, 2 = long) */
1683 FALSE, /* pc_relative */
1685 complain_overflow_dont, /* complain_on_overflow */
1686 ppc64_elf_unhandled_reloc, /* special_function */
1687 "R_PPC64_GOT_TLSGD16_HA", /* name */
1688 FALSE, /* partial_inplace */
1690 0xffff, /* dst_mask */
1691 FALSE), /* pcrel_offset */
1693 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1694 with values (sym+add)@dtpmod and zero, and computes the offset to the
1695 first entry relative to the TOC base (r2). */
1696 HOWTO (R_PPC64_GOT_TLSLD16,
1698 1, /* size (0 = byte, 1 = short, 2 = long) */
1700 FALSE, /* pc_relative */
1702 complain_overflow_signed, /* complain_on_overflow */
1703 ppc64_elf_unhandled_reloc, /* special_function */
1704 "R_PPC64_GOT_TLSLD16", /* name */
1705 FALSE, /* partial_inplace */
1707 0xffff, /* dst_mask */
1708 FALSE), /* pcrel_offset */
1710 /* Like GOT_TLSLD16, but no overflow. */
1711 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1713 1, /* size (0 = byte, 1 = short, 2 = long) */
1715 FALSE, /* pc_relative */
1717 complain_overflow_dont, /* complain_on_overflow */
1718 ppc64_elf_unhandled_reloc, /* special_function */
1719 "R_PPC64_GOT_TLSLD16_LO", /* name */
1720 FALSE, /* partial_inplace */
1722 0xffff, /* dst_mask */
1723 FALSE), /* pcrel_offset */
1725 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1726 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1727 16, /* rightshift */
1728 1, /* size (0 = byte, 1 = short, 2 = long) */
1730 FALSE, /* pc_relative */
1732 complain_overflow_dont, /* complain_on_overflow */
1733 ppc64_elf_unhandled_reloc, /* special_function */
1734 "R_PPC64_GOT_TLSLD16_HI", /* name */
1735 FALSE, /* partial_inplace */
1737 0xffff, /* dst_mask */
1738 FALSE), /* pcrel_offset */
1740 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1741 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1742 16, /* rightshift */
1743 1, /* size (0 = byte, 1 = short, 2 = long) */
1745 FALSE, /* pc_relative */
1747 complain_overflow_dont, /* complain_on_overflow */
1748 ppc64_elf_unhandled_reloc, /* special_function */
1749 "R_PPC64_GOT_TLSLD16_HA", /* name */
1750 FALSE, /* partial_inplace */
1752 0xffff, /* dst_mask */
1753 FALSE), /* pcrel_offset */
1755 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1756 the offset to the entry relative to the TOC base (r2). */
1757 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1759 1, /* size (0 = byte, 1 = short, 2 = long) */
1761 FALSE, /* pc_relative */
1763 complain_overflow_signed, /* complain_on_overflow */
1764 ppc64_elf_unhandled_reloc, /* special_function */
1765 "R_PPC64_GOT_DTPREL16_DS", /* name */
1766 FALSE, /* partial_inplace */
1768 0xfffc, /* dst_mask */
1769 FALSE), /* pcrel_offset */
1771 /* Like GOT_DTPREL16_DS, but no overflow. */
1772 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1774 1, /* size (0 = byte, 1 = short, 2 = long) */
1776 FALSE, /* pc_relative */
1778 complain_overflow_dont, /* complain_on_overflow */
1779 ppc64_elf_unhandled_reloc, /* special_function */
1780 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1781 FALSE, /* partial_inplace */
1783 0xfffc, /* dst_mask */
1784 FALSE), /* pcrel_offset */
1786 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1787 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1788 16, /* rightshift */
1789 1, /* size (0 = byte, 1 = short, 2 = long) */
1791 FALSE, /* pc_relative */
1793 complain_overflow_dont, /* complain_on_overflow */
1794 ppc64_elf_unhandled_reloc, /* special_function */
1795 "R_PPC64_GOT_DTPREL16_HI", /* name */
1796 FALSE, /* partial_inplace */
1798 0xffff, /* dst_mask */
1799 FALSE), /* pcrel_offset */
1801 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1802 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1803 16, /* rightshift */
1804 1, /* size (0 = byte, 1 = short, 2 = long) */
1806 FALSE, /* pc_relative */
1808 complain_overflow_dont, /* complain_on_overflow */
1809 ppc64_elf_unhandled_reloc, /* special_function */
1810 "R_PPC64_GOT_DTPREL16_HA", /* name */
1811 FALSE, /* partial_inplace */
1813 0xffff, /* dst_mask */
1814 FALSE), /* pcrel_offset */
1816 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1817 offset to the entry relative to the TOC base (r2). */
1818 HOWTO (R_PPC64_GOT_TPREL16_DS,
1820 1, /* size (0 = byte, 1 = short, 2 = long) */
1822 FALSE, /* pc_relative */
1824 complain_overflow_signed, /* complain_on_overflow */
1825 ppc64_elf_unhandled_reloc, /* special_function */
1826 "R_PPC64_GOT_TPREL16_DS", /* name */
1827 FALSE, /* partial_inplace */
1829 0xfffc, /* dst_mask */
1830 FALSE), /* pcrel_offset */
1832 /* Like GOT_TPREL16_DS, but no overflow. */
1833 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1835 1, /* size (0 = byte, 1 = short, 2 = long) */
1837 FALSE, /* pc_relative */
1839 complain_overflow_dont, /* complain_on_overflow */
1840 ppc64_elf_unhandled_reloc, /* special_function */
1841 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1842 FALSE, /* partial_inplace */
1844 0xfffc, /* dst_mask */
1845 FALSE), /* pcrel_offset */
1847 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1848 HOWTO (R_PPC64_GOT_TPREL16_HI,
1849 16, /* rightshift */
1850 1, /* size (0 = byte, 1 = short, 2 = long) */
1852 FALSE, /* pc_relative */
1854 complain_overflow_dont, /* complain_on_overflow */
1855 ppc64_elf_unhandled_reloc, /* special_function */
1856 "R_PPC64_GOT_TPREL16_HI", /* name */
1857 FALSE, /* partial_inplace */
1859 0xffff, /* dst_mask */
1860 FALSE), /* pcrel_offset */
1862 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1863 HOWTO (R_PPC64_GOT_TPREL16_HA,
1864 16, /* rightshift */
1865 1, /* size (0 = byte, 1 = short, 2 = long) */
1867 FALSE, /* pc_relative */
1869 complain_overflow_dont, /* complain_on_overflow */
1870 ppc64_elf_unhandled_reloc, /* special_function */
1871 "R_PPC64_GOT_TPREL16_HA", /* name */
1872 FALSE, /* partial_inplace */
1874 0xffff, /* dst_mask */
1875 FALSE), /* pcrel_offset */
1877 HOWTO (R_PPC64_JMP_IREL, /* type */
1879 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1881 FALSE, /* pc_relative */
1883 complain_overflow_dont, /* complain_on_overflow */
1884 ppc64_elf_unhandled_reloc, /* special_function */
1885 "R_PPC64_JMP_IREL", /* name */
1886 FALSE, /* partial_inplace */
1889 FALSE), /* pcrel_offset */
1891 HOWTO (R_PPC64_IRELATIVE, /* type */
1893 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1895 FALSE, /* pc_relative */
1897 complain_overflow_dont, /* complain_on_overflow */
1898 bfd_elf_generic_reloc, /* special_function */
1899 "R_PPC64_IRELATIVE", /* name */
1900 FALSE, /* partial_inplace */
1902 ONES (64), /* dst_mask */
1903 FALSE), /* pcrel_offset */
1905 /* A 16 bit relative relocation. */
1906 HOWTO (R_PPC64_REL16, /* type */
1908 1, /* size (0 = byte, 1 = short, 2 = long) */
1910 TRUE, /* pc_relative */
1912 complain_overflow_bitfield, /* complain_on_overflow */
1913 bfd_elf_generic_reloc, /* special_function */
1914 "R_PPC64_REL16", /* name */
1915 FALSE, /* partial_inplace */
1917 0xffff, /* dst_mask */
1918 TRUE), /* pcrel_offset */
1920 /* A 16 bit relative relocation without overflow. */
1921 HOWTO (R_PPC64_REL16_LO, /* type */
1923 1, /* size (0 = byte, 1 = short, 2 = long) */
1925 TRUE, /* pc_relative */
1927 complain_overflow_dont,/* complain_on_overflow */
1928 bfd_elf_generic_reloc, /* special_function */
1929 "R_PPC64_REL16_LO", /* name */
1930 FALSE, /* partial_inplace */
1932 0xffff, /* dst_mask */
1933 TRUE), /* pcrel_offset */
1935 /* The high order 16 bits of a relative address. */
1936 HOWTO (R_PPC64_REL16_HI, /* type */
1937 16, /* rightshift */
1938 1, /* size (0 = byte, 1 = short, 2 = long) */
1940 TRUE, /* pc_relative */
1942 complain_overflow_dont, /* complain_on_overflow */
1943 bfd_elf_generic_reloc, /* special_function */
1944 "R_PPC64_REL16_HI", /* name */
1945 FALSE, /* partial_inplace */
1947 0xffff, /* dst_mask */
1948 TRUE), /* pcrel_offset */
1950 /* The high order 16 bits of a relative address, plus 1 if the contents of
1951 the low 16 bits, treated as a signed number, is negative. */
1952 HOWTO (R_PPC64_REL16_HA, /* type */
1953 16, /* rightshift */
1954 1, /* size (0 = byte, 1 = short, 2 = long) */
1956 TRUE, /* pc_relative */
1958 complain_overflow_dont, /* complain_on_overflow */
1959 ppc64_elf_ha_reloc, /* special_function */
1960 "R_PPC64_REL16_HA", /* name */
1961 FALSE, /* partial_inplace */
1963 0xffff, /* dst_mask */
1964 TRUE), /* pcrel_offset */
1966 /* GNU extension to record C++ vtable hierarchy. */
1967 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1969 0, /* size (0 = byte, 1 = short, 2 = long) */
1971 FALSE, /* pc_relative */
1973 complain_overflow_dont, /* complain_on_overflow */
1974 NULL, /* special_function */
1975 "R_PPC64_GNU_VTINHERIT", /* name */
1976 FALSE, /* partial_inplace */
1979 FALSE), /* pcrel_offset */
1981 /* GNU extension to record C++ vtable member usage. */
1982 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1984 0, /* size (0 = byte, 1 = short, 2 = long) */
1986 FALSE, /* pc_relative */
1988 complain_overflow_dont, /* complain_on_overflow */
1989 NULL, /* special_function */
1990 "R_PPC64_GNU_VTENTRY", /* name */
1991 FALSE, /* partial_inplace */
1994 FALSE), /* pcrel_offset */
1998 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2002 ppc_howto_init (void)
2004 unsigned int i, type;
2007 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2010 type = ppc64_elf_howto_raw[i].type;
2011 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2012 / sizeof (ppc64_elf_howto_table[0])));
2013 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2017 static reloc_howto_type *
2018 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2019 bfd_reloc_code_real_type code)
2021 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
2023 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2024 /* Initialize howto table if needed. */
2032 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2034 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2036 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2038 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2040 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2042 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2044 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
2046 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
2048 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
2050 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
2052 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
2054 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
2056 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
2058 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
2060 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
2062 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
2064 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
2066 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
2068 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
2070 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
2072 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
2074 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
2076 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
2078 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
2080 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
2082 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
2084 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
2086 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
2088 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
2090 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
2092 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
2094 case BFD_RELOC_64: r = R_PPC64_ADDR64;
2096 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
2098 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
2100 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
2102 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
2104 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
2106 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
2108 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
2110 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
2112 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
2114 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
2116 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
2118 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
2120 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
2122 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
2124 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
2126 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
2128 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
2130 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2132 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2134 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2136 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2138 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2140 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2142 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2144 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2146 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2148 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2150 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2152 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2154 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2156 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2158 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2160 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2162 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2164 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2166 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2168 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2170 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2172 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2174 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2176 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2178 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2180 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2182 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2184 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2186 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2188 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2190 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2192 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2194 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2196 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2198 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2200 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2202 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2204 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2206 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2208 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2210 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2212 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2214 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2216 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2218 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2220 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2222 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2224 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2226 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2228 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2230 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2232 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2234 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2236 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2238 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2240 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2242 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2244 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2248 return ppc64_elf_howto_table[r];
2251 static reloc_howto_type *
2252 ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2258 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2260 if (ppc64_elf_howto_raw[i].name != NULL
2261 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2262 return &ppc64_elf_howto_raw[i];
2267 /* Set the howto pointer for a PowerPC ELF reloc. */
2270 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2271 Elf_Internal_Rela *dst)
2275 /* Initialize howto table if needed. */
2276 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2279 type = ELF64_R_TYPE (dst->r_info);
2280 if (type >= (sizeof (ppc64_elf_howto_table)
2281 / sizeof (ppc64_elf_howto_table[0])))
2283 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2285 type = R_PPC64_NONE;
2287 cache_ptr->howto = ppc64_elf_howto_table[type];
2290 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2292 static bfd_reloc_status_type
2293 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2294 void *data, asection *input_section,
2295 bfd *output_bfd, char **error_message)
2297 /* If this is a relocatable link (output_bfd test tells us), just
2298 call the generic function. Any adjustment will be done at final
2300 if (output_bfd != NULL)
2301 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2302 input_section, output_bfd, error_message);
2304 /* Adjust the addend for sign extension of the low 16 bits.
2305 We won't actually be using the low 16 bits, so trashing them
2307 reloc_entry->addend += 0x8000;
2308 return bfd_reloc_continue;
2311 static bfd_reloc_status_type
2312 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2313 void *data, asection *input_section,
2314 bfd *output_bfd, char **error_message)
2316 if (output_bfd != NULL)
2317 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2318 input_section, output_bfd, error_message);
2320 if (strcmp (symbol->section->name, ".opd") == 0
2321 && (symbol->section->owner->flags & DYNAMIC) == 0)
2323 bfd_vma dest = opd_entry_value (symbol->section,
2324 symbol->value + reloc_entry->addend,
2326 if (dest != (bfd_vma) -1)
2327 reloc_entry->addend = dest - (symbol->value
2328 + symbol->section->output_section->vma
2329 + symbol->section->output_offset);
2331 return bfd_reloc_continue;
2334 static bfd_reloc_status_type
2335 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2336 void *data, asection *input_section,
2337 bfd *output_bfd, char **error_message)
2340 enum elf_ppc64_reloc_type r_type;
2341 bfd_size_type octets;
2342 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2343 bfd_boolean is_power4 = FALSE;
2345 /* If this is a relocatable link (output_bfd test tells us), just
2346 call the generic function. Any adjustment will be done at final
2348 if (output_bfd != NULL)
2349 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2350 input_section, output_bfd, error_message);
2352 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2353 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2354 insn &= ~(0x01 << 21);
2355 r_type = reloc_entry->howto->type;
2356 if (r_type == R_PPC64_ADDR14_BRTAKEN
2357 || r_type == R_PPC64_REL14_BRTAKEN)
2358 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2362 /* Set 'a' bit. This is 0b00010 in BO field for branch
2363 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2364 for branch on CTR insns (BO == 1a00t or 1a01t). */
2365 if ((insn & (0x14 << 21)) == (0x04 << 21))
2367 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2377 if (!bfd_is_com_section (symbol->section))
2378 target = symbol->value;
2379 target += symbol->section->output_section->vma;
2380 target += symbol->section->output_offset;
2381 target += reloc_entry->addend;
2383 from = (reloc_entry->address
2384 + input_section->output_offset
2385 + input_section->output_section->vma);
2387 /* Invert 'y' bit if not the default. */
2388 if ((bfd_signed_vma) (target - from) < 0)
2391 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2393 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2394 input_section, output_bfd, error_message);
2397 static bfd_reloc_status_type
2398 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2399 void *data, asection *input_section,
2400 bfd *output_bfd, char **error_message)
2402 /* If this is a relocatable link (output_bfd test tells us), just
2403 call the generic function. Any adjustment will be done at final
2405 if (output_bfd != NULL)
2406 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2407 input_section, output_bfd, error_message);
2409 /* Subtract the symbol section base address. */
2410 reloc_entry->addend -= symbol->section->output_section->vma;
2411 return bfd_reloc_continue;
2414 static bfd_reloc_status_type
2415 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2416 void *data, asection *input_section,
2417 bfd *output_bfd, char **error_message)
2419 /* If this is a relocatable link (output_bfd test tells us), just
2420 call the generic function. Any adjustment will be done at final
2422 if (output_bfd != NULL)
2423 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2424 input_section, output_bfd, error_message);
2426 /* Subtract the symbol section base address. */
2427 reloc_entry->addend -= symbol->section->output_section->vma;
2429 /* Adjust the addend for sign extension of the low 16 bits. */
2430 reloc_entry->addend += 0x8000;
2431 return bfd_reloc_continue;
2434 static bfd_reloc_status_type
2435 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2436 void *data, asection *input_section,
2437 bfd *output_bfd, char **error_message)
2441 /* If this is a relocatable link (output_bfd test tells us), just
2442 call the generic function. Any adjustment will be done at final
2444 if (output_bfd != NULL)
2445 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2446 input_section, output_bfd, error_message);
2448 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2450 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2452 /* Subtract the TOC base address. */
2453 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2454 return bfd_reloc_continue;
2457 static bfd_reloc_status_type
2458 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2459 void *data, asection *input_section,
2460 bfd *output_bfd, char **error_message)
2464 /* If this is a relocatable link (output_bfd test tells us), just
2465 call the generic function. Any adjustment will be done at final
2467 if (output_bfd != NULL)
2468 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2469 input_section, output_bfd, error_message);
2471 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2473 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2475 /* Subtract the TOC base address. */
2476 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2478 /* Adjust the addend for sign extension of the low 16 bits. */
2479 reloc_entry->addend += 0x8000;
2480 return bfd_reloc_continue;
2483 static bfd_reloc_status_type
2484 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2485 void *data, asection *input_section,
2486 bfd *output_bfd, char **error_message)
2489 bfd_size_type octets;
2491 /* If this is a relocatable link (output_bfd test tells us), just
2492 call the generic function. Any adjustment will be done at final
2494 if (output_bfd != NULL)
2495 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2496 input_section, output_bfd, error_message);
2498 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2500 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2502 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2503 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2504 return bfd_reloc_ok;
2507 static bfd_reloc_status_type
2508 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2509 void *data, asection *input_section,
2510 bfd *output_bfd, char **error_message)
2512 /* If this is a relocatable link (output_bfd test tells us), just
2513 call the generic function. Any adjustment will be done at final
2515 if (output_bfd != NULL)
2516 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2517 input_section, output_bfd, error_message);
2519 if (error_message != NULL)
2521 static char buf[60];
2522 sprintf (buf, "generic linker can't handle %s",
2523 reloc_entry->howto->name);
2524 *error_message = buf;
2526 return bfd_reloc_dangerous;
2529 /* Track GOT entries needed for a given symbol. We might need more
2530 than one got entry per symbol. */
2533 struct got_entry *next;
2535 /* The symbol addend that we'll be placing in the GOT. */
2538 /* Unlike other ELF targets, we use separate GOT entries for the same
2539 symbol referenced from different input files. This is to support
2540 automatic multiple TOC/GOT sections, where the TOC base can vary
2541 from one input file to another. After partitioning into TOC groups
2542 we merge entries within the group.
2544 Point to the BFD owning this GOT entry. */
2547 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2548 TLS_TPREL or TLS_DTPREL for tls entries. */
2551 /* Non-zero if got.ent points to real entry. */
2554 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2557 bfd_signed_vma refcount;
2559 struct got_entry *ent;
2563 /* The same for PLT. */
2566 struct plt_entry *next;
2572 bfd_signed_vma refcount;
2577 struct ppc64_elf_obj_tdata
2579 struct elf_obj_tdata elf;
2581 /* Shortcuts to dynamic linker sections. */
2585 /* Used during garbage collection. We attach global symbols defined
2586 on removed .opd entries to this section so that the sym is removed. */
2587 asection *deleted_section;
2589 /* TLS local dynamic got entry handling. Support for multiple GOT
2590 sections means we potentially need one of these for each input bfd. */
2591 struct got_entry tlsld_got;
2593 /* A copy of relocs before they are modified for --emit-relocs. */
2594 Elf_Internal_Rela *opd_relocs;
2597 #define ppc64_elf_tdata(bfd) \
2598 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2600 #define ppc64_tlsld_got(bfd) \
2601 (&ppc64_elf_tdata (bfd)->tlsld_got)
2603 #define is_ppc64_elf(bfd) \
2604 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2605 && elf_object_id (bfd) == PPC64_ELF_DATA)
2607 /* Override the generic function because we store some extras. */
2610 ppc64_elf_mkobject (bfd *abfd)
2612 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2616 /* Fix bad default arch selected for a 64 bit input bfd when the
2617 default is 32 bit. */
2620 ppc64_elf_object_p (bfd *abfd)
2622 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2624 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2626 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2628 /* Relies on arch after 32 bit default being 64 bit default. */
2629 abfd->arch_info = abfd->arch_info->next;
2630 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2636 /* Support for core dump NOTE sections. */
2639 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2641 size_t offset, size;
2643 if (note->descsz != 504)
2647 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2650 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2656 /* Make a ".reg/999" section. */
2657 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2658 size, note->descpos + offset);
2662 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2664 if (note->descsz != 136)
2667 elf_tdata (abfd)->core_program
2668 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2669 elf_tdata (abfd)->core_command
2670 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2676 ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2689 va_start (ap, note_type);
2690 memset (data, 0, 40);
2691 strncpy (data + 40, va_arg (ap, const char *), 16);
2692 strncpy (data + 56, va_arg (ap, const char *), 80);
2694 return elfcore_write_note (abfd, buf, bufsiz,
2695 "CORE", note_type, data, sizeof (data));
2706 va_start (ap, note_type);
2707 memset (data, 0, 112);
2708 pid = va_arg (ap, long);
2709 bfd_put_32 (abfd, pid, data + 32);
2710 cursig = va_arg (ap, int);
2711 bfd_put_16 (abfd, cursig, data + 12);
2712 greg = va_arg (ap, const void *);
2713 memcpy (data + 112, greg, 384);
2714 memset (data + 496, 0, 8);
2716 return elfcore_write_note (abfd, buf, bufsiz,
2717 "CORE", note_type, data, sizeof (data));
2722 /* Merge backend specific data from an object file to the output
2723 object file when linking. */
2726 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2728 /* Check if we have the same endianess. */
2729 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2730 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2731 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2735 if (bfd_big_endian (ibfd))
2736 msg = _("%B: compiled for a big endian system "
2737 "and target is little endian");
2739 msg = _("%B: compiled for a little endian system "
2740 "and target is big endian");
2742 (*_bfd_error_handler) (msg, ibfd);
2744 bfd_set_error (bfd_error_wrong_format);
2751 /* Add extra PPC sections. */
2753 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2755 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2756 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2757 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2758 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2759 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2760 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2761 { NULL, 0, 0, 0, 0 }
2764 enum _ppc64_sec_type {
2770 struct _ppc64_elf_section_data
2772 struct bfd_elf_section_data elf;
2776 /* An array with one entry for each opd function descriptor. */
2777 struct _opd_sec_data
2779 /* Points to the function code section for local opd entries. */
2780 asection **func_sec;
2782 /* After editing .opd, adjust references to opd local syms. */
2786 /* An array for toc sections, indexed by offset/8. */
2787 struct _toc_sec_data
2789 /* Specifies the relocation symbol index used at a given toc offset. */
2792 /* And the relocation addend. */
2797 enum _ppc64_sec_type sec_type:2;
2799 /* Flag set when small branches are detected. Used to
2800 select suitable defaults for the stub group size. */
2801 unsigned int has_14bit_branch:1;
2804 #define ppc64_elf_section_data(sec) \
2805 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2808 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2810 if (!sec->used_by_bfd)
2812 struct _ppc64_elf_section_data *sdata;
2813 bfd_size_type amt = sizeof (*sdata);
2815 sdata = bfd_zalloc (abfd, amt);
2818 sec->used_by_bfd = sdata;
2821 return _bfd_elf_new_section_hook (abfd, sec);
2824 static struct _opd_sec_data *
2825 get_opd_info (asection * sec)
2828 && ppc64_elf_section_data (sec) != NULL
2829 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2830 return &ppc64_elf_section_data (sec)->u.opd;
2834 /* Parameters for the qsort hook. */
2835 static bfd_boolean synthetic_relocatable;
2837 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2840 compare_symbols (const void *ap, const void *bp)
2842 const asymbol *a = * (const asymbol **) ap;
2843 const asymbol *b = * (const asymbol **) bp;
2845 /* Section symbols first. */
2846 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2848 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2851 /* then .opd symbols. */
2852 if (strcmp (a->section->name, ".opd") == 0
2853 && strcmp (b->section->name, ".opd") != 0)
2855 if (strcmp (a->section->name, ".opd") != 0
2856 && strcmp (b->section->name, ".opd") == 0)
2859 /* then other code symbols. */
2860 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2861 == (SEC_CODE | SEC_ALLOC)
2862 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2863 != (SEC_CODE | SEC_ALLOC))
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 != (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 == (SEC_CODE | SEC_ALLOC))
2872 if (synthetic_relocatable)
2874 if (a->section->id < b->section->id)
2877 if (a->section->id > b->section->id)
2881 if (a->value + a->section->vma < b->value + b->section->vma)
2884 if (a->value + a->section->vma > b->value + b->section->vma)
2887 /* For syms with the same value, prefer strong dynamic global function
2888 syms over other syms. */
2889 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2892 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2895 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2898 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2901 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2904 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2907 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2910 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2916 /* Search SYMS for a symbol of the given VALUE. */
2919 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2927 mid = (lo + hi) >> 1;
2928 if (syms[mid]->value + syms[mid]->section->vma < value)
2930 else if (syms[mid]->value + syms[mid]->section->vma > value)
2940 mid = (lo + hi) >> 1;
2941 if (syms[mid]->section->id < id)
2943 else if (syms[mid]->section->id > id)
2945 else if (syms[mid]->value < value)
2947 else if (syms[mid]->value > value)
2957 section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2959 bfd_vma vma = *(bfd_vma *) ptr;
2960 return ((section->flags & SEC_ALLOC) != 0
2961 && section->vma <= vma
2962 && vma < section->vma + section->size);
2965 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2966 entry syms. Also generate @plt symbols for the glink branch table. */
2969 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2970 long static_count, asymbol **static_syms,
2971 long dyn_count, asymbol **dyn_syms,
2978 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2980 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2985 opd = bfd_get_section_by_name (abfd, ".opd");
2989 symcount = static_count;
2991 symcount += dyn_count;
2995 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2999 if (!relocatable && static_count != 0 && dyn_count != 0)
3001 /* Use both symbol tables. */
3002 memcpy (syms, static_syms, static_count * sizeof (*syms));
3003 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3005 else if (!relocatable && static_count == 0)
3006 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3008 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3010 synthetic_relocatable = relocatable;
3011 qsort (syms, symcount, sizeof (*syms), compare_symbols);
3013 if (!relocatable && symcount > 1)
3016 /* Trim duplicate syms, since we may have merged the normal and
3017 dynamic symbols. Actually, we only care about syms that have
3018 different values, so trim any with the same value. */
3019 for (i = 1, j = 1; i < symcount; ++i)
3020 if (syms[i - 1]->value + syms[i - 1]->section->vma
3021 != syms[i]->value + syms[i]->section->vma)
3022 syms[j++] = syms[i];
3027 if (strcmp (syms[i]->section->name, ".opd") == 0)
3031 for (; i < symcount; ++i)
3032 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3033 != (SEC_CODE | SEC_ALLOC))
3034 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3038 for (; i < symcount; ++i)
3039 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3043 for (; i < symcount; ++i)
3044 if (strcmp (syms[i]->section->name, ".opd") != 0)
3048 for (; i < symcount; ++i)
3049 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 != (SEC_CODE | SEC_ALLOC))
3058 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3063 if (opdsymend == secsymend)
3066 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3067 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
3071 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3078 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3082 while (r < opd->relocation + relcount
3083 && r->address < syms[i]->value + opd->vma)
3086 if (r == opd->relocation + relcount)
3089 if (r->address != syms[i]->value + opd->vma)
3092 if (r->howto->type != R_PPC64_ADDR64)
3095 sym = *r->sym_ptr_ptr;
3096 if (!sym_exists_at (syms, opdsymend, symcount,
3097 sym->section->id, sym->value + r->addend))
3100 size += sizeof (asymbol);
3101 size += strlen (syms[i]->name) + 2;
3105 s = *ret = bfd_malloc (size);
3112 names = (char *) (s + count);
3114 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
3118 while (r < opd->relocation + relcount
3119 && r->address < syms[i]->value + opd->vma)
3122 if (r == opd->relocation + relcount)
3125 if (r->address != syms[i]->value + opd->vma)
3128 if (r->howto->type != R_PPC64_ADDR64)
3131 sym = *r->sym_ptr_ptr;
3132 if (!sym_exists_at (syms, opdsymend, symcount,
3133 sym->section->id, sym->value + r->addend))
3138 s->flags |= BSF_SYNTHETIC;
3139 s->section = sym->section;
3140 s->value = sym->value + r->addend;
3143 len = strlen (syms[i]->name);
3144 memcpy (names, syms[i]->name, len + 1);
3146 /* Have udata.p point back to the original symbol this
3147 synthetic symbol was derived from. */
3148 s->udata.p = syms[i];
3155 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3159 bfd_vma glink_vma = 0, resolv_vma = 0;
3160 asection *dynamic, *glink = NULL, *relplt = NULL;
3163 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3167 free_contents_and_exit:
3175 for (i = secsymend; i < opdsymend; ++i)
3179 /* Ignore bogus symbols. */
3180 if (syms[i]->value > opd->size - 8)
3183 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3184 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3187 size += sizeof (asymbol);
3188 size += strlen (syms[i]->name) + 2;
3192 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3194 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
3196 bfd_byte *dynbuf, *extdyn, *extdynend;
3198 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3200 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3201 goto free_contents_and_exit;
3203 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3204 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3207 extdynend = extdyn + dynamic->size;
3208 for (; extdyn < extdynend; extdyn += extdynsize)
3210 Elf_Internal_Dyn dyn;
3211 (*swap_dyn_in) (abfd, extdyn, &dyn);
3213 if (dyn.d_tag == DT_NULL)
3216 if (dyn.d_tag == DT_PPC64_GLINK)
3218 /* The first glink stub starts at offset 32; see comment in
3219 ppc64_elf_finish_dynamic_sections. */
3220 glink_vma = dyn.d_un.d_val + 32;
3221 /* The .glink section usually does not survive the final
3222 link; search for the section (usually .text) where the
3223 glink stubs now reside. */
3224 glink = bfd_sections_find_if (abfd, section_covers_vma,
3235 /* Determine __glink trampoline by reading the relative branch
3236 from the first glink stub. */
3238 if (bfd_get_section_contents (abfd, glink, buf,
3239 glink_vma + 4 - glink->vma, 4))
3241 unsigned int insn = bfd_get_32 (abfd, buf);
3243 if ((insn & ~0x3fffffc) == 0)
3244 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3248 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3250 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3253 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3254 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3255 goto free_contents_and_exit;
3257 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3258 size += plt_count * sizeof (asymbol);
3260 p = relplt->relocation;
3261 for (i = 0; i < plt_count; i++, p++)
3263 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3265 size += sizeof ("+0x") - 1 + 16;
3270 s = *ret = bfd_malloc (size);
3272 goto free_contents_and_exit;
3274 names = (char *) (s + count + plt_count + (resolv_vma != 0));
3276 for (i = secsymend; i < opdsymend; ++i)
3280 if (syms[i]->value > opd->size - 8)
3283 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3284 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3288 asection *sec = abfd->sections;
3295 long mid = (lo + hi) >> 1;
3296 if (syms[mid]->section->vma < ent)
3298 else if (syms[mid]->section->vma > ent)
3302 sec = syms[mid]->section;
3307 if (lo >= hi && lo > codesecsym)
3308 sec = syms[lo - 1]->section;
3310 for (; sec != NULL; sec = sec->next)
3314 if ((sec->flags & SEC_ALLOC) == 0
3315 || (sec->flags & SEC_LOAD) == 0)
3317 if ((sec->flags & SEC_CODE) != 0)
3320 s->flags |= BSF_SYNTHETIC;
3321 s->value = ent - s->section->vma;
3324 len = strlen (syms[i]->name);
3325 memcpy (names, syms[i]->name, len + 1);
3327 /* Have udata.p point back to the original symbol this
3328 synthetic symbol was derived from. */
3329 s->udata.p = syms[i];
3335 if (glink != NULL && relplt != NULL)
3339 /* Add a symbol for the main glink trampoline. */
3340 memset (s, 0, sizeof *s);
3342 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
3344 s->value = resolv_vma - glink->vma;
3346 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3347 names += sizeof ("__glink_PLTresolve");
3352 /* FIXME: It would be very much nicer to put sym@plt on the
3353 stub rather than on the glink branch table entry. The
3354 objdump disassembler would then use a sensible symbol
3355 name on plt calls. The difficulty in doing so is
3356 a) finding the stubs, and,
3357 b) matching stubs against plt entries, and,
3358 c) there can be multiple stubs for a given plt entry.
3360 Solving (a) could be done by code scanning, but older
3361 ppc64 binaries used different stubs to current code.
3362 (b) is the tricky one since you need to known the toc
3363 pointer for at least one function that uses a pic stub to
3364 be able to calculate the plt address referenced.
3365 (c) means gdb would need to set multiple breakpoints (or
3366 find the glink branch itself) when setting breakpoints
3367 for pending shared library loads. */
3368 p = relplt->relocation;
3369 for (i = 0; i < plt_count; i++, p++)
3373 *s = **p->sym_ptr_ptr;
3374 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3375 we are defining a symbol, ensure one of them is set. */
3376 if ((s->flags & BSF_LOCAL) == 0)
3377 s->flags |= BSF_GLOBAL;
3378 s->flags |= BSF_SYNTHETIC;
3380 s->value = glink_vma - glink->vma;
3383 len = strlen ((*p->sym_ptr_ptr)->name);
3384 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3388 memcpy (names, "+0x", sizeof ("+0x") - 1);
3389 names += sizeof ("+0x") - 1;
3390 bfd_sprintf_vma (abfd, names, p->addend);
3391 names += strlen (names);
3393 memcpy (names, "@plt", sizeof ("@plt"));
3394 names += sizeof ("@plt");
3409 /* The following functions are specific to the ELF linker, while
3410 functions above are used generally. Those named ppc64_elf_* are
3411 called by the main ELF linker code. They appear in this file more
3412 or less in the order in which they are called. eg.
3413 ppc64_elf_check_relocs is called early in the link process,
3414 ppc64_elf_finish_dynamic_sections is one of the last functions
3417 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3418 functions have both a function code symbol and a function descriptor
3419 symbol. A call to foo in a relocatable object file looks like:
3426 The function definition in another object file might be:
3430 . .quad .TOC.@tocbase
3436 When the linker resolves the call during a static link, the branch
3437 unsurprisingly just goes to .foo and the .opd information is unused.
3438 If the function definition is in a shared library, things are a little
3439 different: The call goes via a plt call stub, the opd information gets
3440 copied to the plt, and the linker patches the nop.
3448 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3449 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3450 . std 2,40(1) # this is the general idea
3458 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3460 The "reloc ()" notation is supposed to indicate that the linker emits
3461 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3464 What are the difficulties here? Well, firstly, the relocations
3465 examined by the linker in check_relocs are against the function code
3466 sym .foo, while the dynamic relocation in the plt is emitted against
3467 the function descriptor symbol, foo. Somewhere along the line, we need
3468 to carefully copy dynamic link information from one symbol to the other.
3469 Secondly, the generic part of the elf linker will make .foo a dynamic
3470 symbol as is normal for most other backends. We need foo dynamic
3471 instead, at least for an application final link. However, when
3472 creating a shared library containing foo, we need to have both symbols
3473 dynamic so that references to .foo are satisfied during the early
3474 stages of linking. Otherwise the linker might decide to pull in a
3475 definition from some other object, eg. a static library.
3477 Update: As of August 2004, we support a new convention. Function
3478 calls may use the function descriptor symbol, ie. "bl foo". This
3479 behaves exactly as "bl .foo". */
3481 /* The linker needs to keep track of the number of relocs that it
3482 decides to copy as dynamic relocs in check_relocs for each symbol.
3483 This is so that it can later discard them if they are found to be
3484 unnecessary. We store the information in a field extending the
3485 regular ELF linker hash table. */
3487 struct ppc_dyn_relocs
3489 struct ppc_dyn_relocs *next;
3491 /* The input section of the reloc. */
3494 /* Total number of relocs copied for the input section. */
3495 bfd_size_type count;
3497 /* Number of pc-relative relocs copied for the input section. */
3498 bfd_size_type pc_count;
3501 /* Of those relocs that might be copied as dynamic relocs, this function
3502 selects those that must be copied when linking a shared library,
3503 even when the symbol is local. */
3506 must_be_dyn_reloc (struct bfd_link_info *info,
3507 enum elf_ppc64_reloc_type r_type)
3519 case R_PPC64_TPREL16:
3520 case R_PPC64_TPREL16_LO:
3521 case R_PPC64_TPREL16_HI:
3522 case R_PPC64_TPREL16_HA:
3523 case R_PPC64_TPREL16_DS:
3524 case R_PPC64_TPREL16_LO_DS:
3525 case R_PPC64_TPREL16_HIGHER:
3526 case R_PPC64_TPREL16_HIGHERA:
3527 case R_PPC64_TPREL16_HIGHEST:
3528 case R_PPC64_TPREL16_HIGHESTA:
3529 case R_PPC64_TPREL64:
3530 return !info->executable;
3534 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3535 copying dynamic variables from a shared lib into an app's dynbss
3536 section, and instead use a dynamic relocation to point into the
3537 shared lib. With code that gcc generates, it's vital that this be
3538 enabled; In the PowerPC64 ABI, the address of a function is actually
3539 the address of a function descriptor, which resides in the .opd
3540 section. gcc uses the descriptor directly rather than going via the
3541 GOT as some other ABI's do, which means that initialized function
3542 pointers must reference the descriptor. Thus, a function pointer
3543 initialized to the address of a function in a shared library will
3544 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3545 redefines the function descriptor symbol to point to the copy. This
3546 presents a problem as a plt entry for that function is also
3547 initialized from the function descriptor symbol and the copy reloc
3548 may not be initialized first. */
3549 #define ELIMINATE_COPY_RELOCS 1
3551 /* Section name for stubs is the associated section name plus this
3553 #define STUB_SUFFIX ".stub"
3556 ppc_stub_long_branch:
3557 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3558 destination, but a 24 bit branch in a stub section will reach.
3561 ppc_stub_plt_branch:
3562 Similar to the above, but a 24 bit branch in the stub section won't
3563 reach its destination.
3564 . addis %r12,%r2,xxx@toc@ha
3565 . ld %r11,xxx@toc@l(%r12)
3570 Used to call a function in a shared library. If it so happens that
3571 the plt entry referenced crosses a 64k boundary, then an extra
3572 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3573 . addis %r12,%r2,xxx@toc@ha
3575 . ld %r11,xxx+0@toc@l(%r12)
3577 . ld %r2,xxx+8@toc@l(%r12)
3578 . ld %r11,xxx+16@toc@l(%r12)
3581 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3582 code to adjust the value and save r2 to support multiple toc sections.
3583 A ppc_stub_long_branch with an r2 offset looks like:
3585 . addis %r2,%r2,off@ha
3586 . addi %r2,%r2,off@l
3589 A ppc_stub_plt_branch with an r2 offset looks like:
3591 . addis %r12,%r2,xxx@toc@ha
3592 . ld %r11,xxx@toc@l(%r12)
3593 . addis %r2,%r2,off@ha
3594 . addi %r2,%r2,off@l
3598 In cases where the "addis" instruction would add zero, the "addis" is
3599 omitted and following instructions modified slightly in some cases.
3602 enum ppc_stub_type {
3604 ppc_stub_long_branch,
3605 ppc_stub_long_branch_r2off,
3606 ppc_stub_plt_branch,
3607 ppc_stub_plt_branch_r2off,
3611 struct ppc_stub_hash_entry {
3613 /* Base hash table entry structure. */
3614 struct bfd_hash_entry root;
3616 enum ppc_stub_type stub_type;
3618 /* The stub section. */
3621 /* Offset within stub_sec of the beginning of this stub. */
3622 bfd_vma stub_offset;
3624 /* Given the symbol's value and its section we can determine its final
3625 value when building the stubs (so the stub knows where to jump. */
3626 bfd_vma target_value;
3627 asection *target_section;
3629 /* The symbol table entry, if any, that this was derived from. */
3630 struct ppc_link_hash_entry *h;
3631 struct plt_entry *plt_ent;
3633 /* And the reloc addend that this was derived from. */
3636 /* Where this stub is being called from, or, in the case of combined
3637 stub sections, the first input section in the group. */
3641 struct ppc_branch_hash_entry {
3643 /* Base hash table entry structure. */
3644 struct bfd_hash_entry root;
3646 /* Offset within branch lookup table. */
3647 unsigned int offset;
3649 /* Generation marker. */
3653 struct ppc_link_hash_entry
3655 struct elf_link_hash_entry elf;
3658 /* A pointer to the most recently used stub hash entry against this
3660 struct ppc_stub_hash_entry *stub_cache;
3662 /* A pointer to the next symbol starting with a '.' */
3663 struct ppc_link_hash_entry *next_dot_sym;
3666 /* Track dynamic relocs copied for this symbol. */
3667 struct ppc_dyn_relocs *dyn_relocs;
3669 /* Link between function code and descriptor symbols. */
3670 struct ppc_link_hash_entry *oh;
3672 /* Flag function code and descriptor symbols. */
3673 unsigned int is_func:1;
3674 unsigned int is_func_descriptor:1;
3675 unsigned int fake:1;
3677 /* Whether global opd/toc sym has been adjusted or not.
3678 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3679 should be set for all globals defined in any opd/toc section. */
3680 unsigned int adjust_done:1;
3682 /* Set if we twiddled this symbol to weak at some stage. */
3683 unsigned int was_undefined:1;
3685 /* Contexts in which symbol is used in the GOT (or TOC).
3686 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3687 corresponding relocs are encountered during check_relocs.
3688 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3689 indicate the corresponding GOT entry type is not needed.
3690 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3691 a TPREL one. We use a separate flag rather than setting TPREL
3692 just for convenience in distinguishing the two cases. */
3693 #define TLS_GD 1 /* GD reloc. */
3694 #define TLS_LD 2 /* LD reloc. */
3695 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3696 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3697 #define TLS_TLS 16 /* Any TLS reloc. */
3698 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3699 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3700 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3704 /* ppc64 ELF linker hash table. */
3706 struct ppc_link_hash_table
3708 struct elf_link_hash_table elf;
3710 /* The stub hash table. */
3711 struct bfd_hash_table stub_hash_table;
3713 /* Another hash table for plt_branch stubs. */
3714 struct bfd_hash_table branch_hash_table;
3716 /* Linker stub bfd. */
3719 /* Linker call-backs. */
3720 asection * (*add_stub_section) (const char *, asection *);
3721 void (*layout_sections_again) (void);
3723 /* Array to keep track of which stub sections have been created, and
3724 information on stub grouping. */
3726 /* This is the section to which stubs in the group will be attached. */
3728 /* The stub section. */
3730 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3734 /* Temp used when calculating TOC pointers. */
3737 asection *toc_first_sec;
3739 /* Highest input section id. */
3742 /* Highest output section index. */
3745 /* Used when adding symbols. */
3746 struct ppc_link_hash_entry *dot_syms;
3748 /* List of input sections for each output section. */
3749 asection **input_list;
3751 /* Short-cuts to get to dynamic linker sections. */
3764 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3765 struct ppc_link_hash_entry *tls_get_addr;
3766 struct ppc_link_hash_entry *tls_get_addr_fd;
3768 /* The size of reliplt used by got entry relocs. */
3769 bfd_size_type got_reli_size;
3772 unsigned long stub_count[ppc_stub_plt_call];
3774 /* Number of stubs against global syms. */
3775 unsigned long stub_globals;
3777 /* Set if we should emit symbols for stubs. */
3778 unsigned int emit_stub_syms:1;
3780 /* Set if __tls_get_addr optimization should not be done. */
3781 unsigned int no_tls_get_addr_opt:1;
3783 /* Support for multiple toc sections. */
3784 unsigned int multi_toc_needed:1;
3785 unsigned int second_toc_pass:1;
3788 unsigned int stub_error:1;
3790 /* Temp used by ppc64_elf_process_dot_syms. */
3791 unsigned int twiddled_syms:1;
3793 /* Incremented every time we size stubs. */
3794 unsigned int stub_iteration;
3796 /* Small local sym cache. */
3797 struct sym_cache sym_cache;
3800 /* Rename some of the generic section flags to better document how they
3802 #define has_toc_reloc has_gp_reloc
3803 #define makes_toc_func_call need_finalize_relax
3804 #define call_check_in_progress reloc_done
3806 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3808 #define ppc_hash_table(p) \
3809 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3810 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3812 #define ppc_stub_hash_lookup(table, string, create, copy) \
3813 ((struct ppc_stub_hash_entry *) \
3814 bfd_hash_lookup ((table), (string), (create), (copy)))
3816 #define ppc_branch_hash_lookup(table, string, create, copy) \
3817 ((struct ppc_branch_hash_entry *) \
3818 bfd_hash_lookup ((table), (string), (create), (copy)))
3820 /* Create an entry in the stub hash table. */
3822 static struct bfd_hash_entry *
3823 stub_hash_newfunc (struct bfd_hash_entry *entry,
3824 struct bfd_hash_table *table,
3827 /* Allocate the structure if it has not already been allocated by a
3831 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3836 /* Call the allocation method of the superclass. */
3837 entry = bfd_hash_newfunc (entry, table, string);
3840 struct ppc_stub_hash_entry *eh;
3842 /* Initialize the local fields. */
3843 eh = (struct ppc_stub_hash_entry *) entry;
3844 eh->stub_type = ppc_stub_none;
3845 eh->stub_sec = NULL;
3846 eh->stub_offset = 0;
3847 eh->target_value = 0;
3848 eh->target_section = NULL;
3856 /* Create an entry in the branch hash table. */
3858 static struct bfd_hash_entry *
3859 branch_hash_newfunc (struct bfd_hash_entry *entry,
3860 struct bfd_hash_table *table,
3863 /* Allocate the structure if it has not already been allocated by a
3867 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3872 /* Call the allocation method of the superclass. */
3873 entry = bfd_hash_newfunc (entry, table, string);
3876 struct ppc_branch_hash_entry *eh;
3878 /* Initialize the local fields. */
3879 eh = (struct ppc_branch_hash_entry *) entry;
3887 /* Create an entry in a ppc64 ELF linker hash table. */
3889 static struct bfd_hash_entry *
3890 link_hash_newfunc (struct bfd_hash_entry *entry,
3891 struct bfd_hash_table *table,
3894 /* Allocate the structure if it has not already been allocated by a
3898 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3903 /* Call the allocation method of the superclass. */
3904 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3907 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3909 memset (&eh->u.stub_cache, 0,
3910 (sizeof (struct ppc_link_hash_entry)
3911 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3913 /* When making function calls, old ABI code references function entry
3914 points (dot symbols), while new ABI code references the function
3915 descriptor symbol. We need to make any combination of reference and
3916 definition work together, without breaking archive linking.
3918 For a defined function "foo" and an undefined call to "bar":
3919 An old object defines "foo" and ".foo", references ".bar" (possibly
3921 A new object defines "foo" and references "bar".
3923 A new object thus has no problem with its undefined symbols being
3924 satisfied by definitions in an old object. On the other hand, the
3925 old object won't have ".bar" satisfied by a new object.
3927 Keep a list of newly added dot-symbols. */
3929 if (string[0] == '.')
3931 struct ppc_link_hash_table *htab;
3933 htab = (struct ppc_link_hash_table *) table;
3934 eh->u.next_dot_sym = htab->dot_syms;
3935 htab->dot_syms = eh;
3942 /* Create a ppc64 ELF linker hash table. */
3944 static struct bfd_link_hash_table *
3945 ppc64_elf_link_hash_table_create (bfd *abfd)
3947 struct ppc_link_hash_table *htab;
3948 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3950 htab = bfd_zmalloc (amt);
3954 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3955 sizeof (struct ppc_link_hash_entry),
3962 /* Init the stub hash table too. */
3963 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3964 sizeof (struct ppc_stub_hash_entry)))
3967 /* And the branch hash table. */
3968 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3969 sizeof (struct ppc_branch_hash_entry)))
3972 /* Initializing two fields of the union is just cosmetic. We really
3973 only care about glist, but when compiled on a 32-bit host the
3974 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3975 debugger inspection of these fields look nicer. */
3976 htab->elf.init_got_refcount.refcount = 0;
3977 htab->elf.init_got_refcount.glist = NULL;
3978 htab->elf.init_plt_refcount.refcount = 0;
3979 htab->elf.init_plt_refcount.glist = NULL;
3980 htab->elf.init_got_offset.offset = 0;
3981 htab->elf.init_got_offset.glist = NULL;
3982 htab->elf.init_plt_offset.offset = 0;
3983 htab->elf.init_plt_offset.glist = NULL;
3985 return &htab->elf.root;
3988 /* Free the derived linker hash table. */
3991 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3993 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3995 bfd_hash_table_free (&ret->stub_hash_table);
3996 bfd_hash_table_free (&ret->branch_hash_table);
3997 _bfd_generic_link_hash_table_free (hash);
4000 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4003 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4005 struct ppc_link_hash_table *htab;
4007 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4009 /* Always hook our dynamic sections into the first bfd, which is the
4010 linker created stub bfd. This ensures that the GOT header is at
4011 the start of the output TOC section. */
4012 htab = ppc_hash_table (info);
4015 htab->stub_bfd = abfd;
4016 htab->elf.dynobj = abfd;
4019 /* Build a name for an entry in the stub hash table. */
4022 ppc_stub_name (const asection *input_section,
4023 const asection *sym_sec,
4024 const struct ppc_link_hash_entry *h,
4025 const Elf_Internal_Rela *rel)
4030 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4031 offsets from a sym as a branch target? In fact, we could
4032 probably assume the addend is always zero. */
4033 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4037 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4038 stub_name = bfd_malloc (len);
4039 if (stub_name == NULL)
4042 sprintf (stub_name, "%08x.%s+%x",
4043 input_section->id & 0xffffffff,
4044 h->elf.root.root.string,
4045 (int) rel->r_addend & 0xffffffff);
4049 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4050 stub_name = bfd_malloc (len);
4051 if (stub_name == NULL)
4054 sprintf (stub_name, "%08x.%x:%x+%x",
4055 input_section->id & 0xffffffff,
4056 sym_sec->id & 0xffffffff,
4057 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4058 (int) rel->r_addend & 0xffffffff);
4060 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4061 stub_name[len - 2] = 0;
4065 /* Look up an entry in the stub hash. Stub entries are cached because
4066 creating the stub name takes a bit of time. */
4068 static struct ppc_stub_hash_entry *
4069 ppc_get_stub_entry (const asection *input_section,
4070 const asection *sym_sec,
4071 struct ppc_link_hash_entry *h,
4072 const Elf_Internal_Rela *rel,
4073 struct ppc_link_hash_table *htab)
4075 struct ppc_stub_hash_entry *stub_entry;
4076 const asection *id_sec;
4078 /* If this input section is part of a group of sections sharing one
4079 stub section, then use the id of the first section in the group.
4080 Stub names need to include a section id, as there may well be
4081 more than one stub used to reach say, printf, and we need to
4082 distinguish between them. */
4083 id_sec = htab->stub_group[input_section->id].link_sec;
4085 if (h != NULL && h->u.stub_cache != NULL
4086 && h->u.stub_cache->h == h
4087 && h->u.stub_cache->id_sec == id_sec)
4089 stub_entry = h->u.stub_cache;
4095 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4096 if (stub_name == NULL)
4099 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4100 stub_name, FALSE, FALSE);
4102 h->u.stub_cache = stub_entry;
4110 /* Add a new stub entry to the stub hash. Not all fields of the new
4111 stub entry are initialised. */
4113 static struct ppc_stub_hash_entry *
4114 ppc_add_stub (const char *stub_name,
4116 struct ppc_link_hash_table *htab)
4120 struct ppc_stub_hash_entry *stub_entry;
4122 link_sec = htab->stub_group[section->id].link_sec;
4123 stub_sec = htab->stub_group[section->id].stub_sec;
4124 if (stub_sec == NULL)
4126 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4127 if (stub_sec == NULL)
4133 namelen = strlen (link_sec->name);
4134 len = namelen + sizeof (STUB_SUFFIX);
4135 s_name = bfd_alloc (htab->stub_bfd, len);
4139 memcpy (s_name, link_sec->name, namelen);
4140 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4141 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4142 if (stub_sec == NULL)
4144 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4146 htab->stub_group[section->id].stub_sec = stub_sec;
4149 /* Enter this entry into the linker stub hash table. */
4150 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4152 if (stub_entry == NULL)
4154 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
4155 section->owner, stub_name);
4159 stub_entry->stub_sec = stub_sec;
4160 stub_entry->stub_offset = 0;
4161 stub_entry->id_sec = link_sec;
4165 /* Create sections for linker generated code. */
4168 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4170 struct ppc_link_hash_table *htab;
4173 htab = ppc_hash_table (info);
4177 /* Create .sfpr for code to save and restore fp regs. */
4178 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4179 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4180 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4182 if (htab->sfpr == NULL
4183 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4186 /* Create .glink for lazy dynamic linking support. */
4187 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4189 if (htab->glink == NULL
4190 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4193 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4194 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4195 if (htab->iplt == NULL
4196 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4199 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4200 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4201 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4204 if (htab->reliplt == NULL
4205 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4208 /* Create branch lookup table for plt_branch stubs. */
4209 flags = (SEC_ALLOC | SEC_LOAD
4210 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4211 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4213 if (htab->brlt == NULL
4214 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4220 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4221 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4222 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4225 if (htab->relbrlt == NULL
4226 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4232 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4233 not already done. */
4236 create_got_section (bfd *abfd, struct bfd_link_info *info)
4238 asection *got, *relgot;
4240 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4242 if (!is_ppc64_elf (abfd))
4249 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4252 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4257 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4258 | SEC_LINKER_CREATED);
4260 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
4262 || !bfd_set_section_alignment (abfd, got, 3))
4265 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4266 flags | SEC_READONLY);
4268 || ! bfd_set_section_alignment (abfd, relgot, 3))
4271 ppc64_elf_tdata (abfd)->got = got;
4272 ppc64_elf_tdata (abfd)->relgot = relgot;
4276 /* Create the dynamic sections, and set up shortcuts. */
4279 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
4281 struct ppc_link_hash_table *htab;
4283 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
4286 htab = ppc_hash_table (info);
4291 htab->got = bfd_get_section_by_name (dynobj, ".got");
4292 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4293 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4294 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
4296 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
4298 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4299 || (!info->shared && !htab->relbss))
4305 /* Follow indirect and warning symbol links. */
4307 static inline struct bfd_link_hash_entry *
4308 follow_link (struct bfd_link_hash_entry *h)
4310 while (h->type == bfd_link_hash_indirect
4311 || h->type == bfd_link_hash_warning)
4316 static inline struct elf_link_hash_entry *
4317 elf_follow_link (struct elf_link_hash_entry *h)
4319 return (struct elf_link_hash_entry *) follow_link (&h->root);
4322 static inline struct ppc_link_hash_entry *
4323 ppc_follow_link (struct ppc_link_hash_entry *h)
4325 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4328 /* Merge PLT info on FROM with that on TO. */
4331 move_plt_plist (struct ppc_link_hash_entry *from,
4332 struct ppc_link_hash_entry *to)
4334 if (from->elf.plt.plist != NULL)
4336 if (to->elf.plt.plist != NULL)
4338 struct plt_entry **entp;
4339 struct plt_entry *ent;
4341 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4343 struct plt_entry *dent;
4345 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4346 if (dent->addend == ent->addend)
4348 dent->plt.refcount += ent->plt.refcount;
4355 *entp = to->elf.plt.plist;
4358 to->elf.plt.plist = from->elf.plt.plist;
4359 from->elf.plt.plist = NULL;
4363 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4366 ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4367 struct elf_link_hash_entry *dir,
4368 struct elf_link_hash_entry *ind)
4370 struct ppc_link_hash_entry *edir, *eind;
4372 edir = (struct ppc_link_hash_entry *) dir;
4373 eind = (struct ppc_link_hash_entry *) ind;
4375 /* Copy over any dynamic relocs we may have on the indirect sym. */
4376 if (eind->dyn_relocs != NULL)
4378 if (edir->dyn_relocs != NULL)
4380 struct ppc_dyn_relocs **pp;
4381 struct ppc_dyn_relocs *p;
4383 /* Add reloc counts against the indirect sym to the direct sym
4384 list. Merge any entries against the same section. */
4385 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4387 struct ppc_dyn_relocs *q;
4389 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4390 if (q->sec == p->sec)
4392 q->pc_count += p->pc_count;
4393 q->count += p->count;
4400 *pp = edir->dyn_relocs;
4403 edir->dyn_relocs = eind->dyn_relocs;
4404 eind->dyn_relocs = NULL;
4407 edir->is_func |= eind->is_func;
4408 edir->is_func_descriptor |= eind->is_func_descriptor;
4409 edir->tls_mask |= eind->tls_mask;
4410 if (eind->oh != NULL)
4411 edir->oh = ppc_follow_link (eind->oh);
4413 /* If called to transfer flags for a weakdef during processing
4414 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4415 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4416 if (!(ELIMINATE_COPY_RELOCS
4417 && eind->elf.root.type != bfd_link_hash_indirect
4418 && edir->elf.dynamic_adjusted))
4419 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4421 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4422 edir->elf.ref_regular |= eind->elf.ref_regular;
4423 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4424 edir->elf.needs_plt |= eind->elf.needs_plt;
4426 /* If we were called to copy over info for a weak sym, that's all. */
4427 if (eind->elf.root.type != bfd_link_hash_indirect)
4430 /* Copy over got entries that we may have already seen to the
4431 symbol which just became indirect. */
4432 if (eind->elf.got.glist != NULL)
4434 if (edir->elf.got.glist != NULL)
4436 struct got_entry **entp;
4437 struct got_entry *ent;
4439 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4441 struct got_entry *dent;
4443 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4444 if (dent->addend == ent->addend
4445 && dent->owner == ent->owner
4446 && dent->tls_type == ent->tls_type)
4448 dent->got.refcount += ent->got.refcount;
4455 *entp = edir->elf.got.glist;
4458 edir->elf.got.glist = eind->elf.got.glist;
4459 eind->elf.got.glist = NULL;
4462 /* And plt entries. */
4463 move_plt_plist (eind, edir);
4465 if (eind->elf.dynindx != -1)
4467 if (edir->elf.dynindx != -1)
4468 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4469 edir->elf.dynstr_index);
4470 edir->elf.dynindx = eind->elf.dynindx;
4471 edir->elf.dynstr_index = eind->elf.dynstr_index;
4472 eind->elf.dynindx = -1;
4473 eind->elf.dynstr_index = 0;
4477 /* Find the function descriptor hash entry from the given function code
4478 hash entry FH. Link the entries via their OH fields. */
4480 static struct ppc_link_hash_entry *
4481 lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4483 struct ppc_link_hash_entry *fdh = fh->oh;
4487 const char *fd_name = fh->elf.root.root.string + 1;
4489 fdh = (struct ppc_link_hash_entry *)
4490 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4494 fdh->is_func_descriptor = 1;
4500 return ppc_follow_link (fdh);
4503 /* Make a fake function descriptor sym for the code sym FH. */
4505 static struct ppc_link_hash_entry *
4506 make_fdh (struct bfd_link_info *info,
4507 struct ppc_link_hash_entry *fh)
4511 struct bfd_link_hash_entry *bh;
4512 struct ppc_link_hash_entry *fdh;
4514 abfd = fh->elf.root.u.undef.abfd;
4515 newsym = bfd_make_empty_symbol (abfd);
4516 newsym->name = fh->elf.root.root.string + 1;
4517 newsym->section = bfd_und_section_ptr;
4519 newsym->flags = BSF_WEAK;
4522 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4523 newsym->flags, newsym->section,
4524 newsym->value, NULL, FALSE, FALSE,
4528 fdh = (struct ppc_link_hash_entry *) bh;
4529 fdh->elf.non_elf = 0;
4531 fdh->is_func_descriptor = 1;
4538 /* Fix function descriptor symbols defined in .opd sections to be
4542 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
4543 struct bfd_link_info *info,
4544 Elf_Internal_Sym *isym,
4545 const char **name ATTRIBUTE_UNUSED,
4546 flagword *flags ATTRIBUTE_UNUSED,
4548 bfd_vma *value ATTRIBUTE_UNUSED)
4550 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4551 elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4552 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4554 else if (*sec != NULL
4555 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
4556 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4561 /* This function makes an old ABI object reference to ".bar" cause the
4562 inclusion of a new ABI object archive that defines "bar".
4563 NAME is a symbol defined in an archive. Return a symbol in the hash
4564 table that might be satisfied by the archive symbols. */
4566 static struct elf_link_hash_entry *
4567 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4568 struct bfd_link_info *info,
4571 struct elf_link_hash_entry *h;
4575 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4577 /* Don't return this sym if it is a fake function descriptor
4578 created by add_symbol_adjust. */
4579 && !(h->root.type == bfd_link_hash_undefweak
4580 && ((struct ppc_link_hash_entry *) h)->fake))
4586 len = strlen (name);
4587 dot_name = bfd_alloc (abfd, len + 2);
4588 if (dot_name == NULL)
4589 return (struct elf_link_hash_entry *) 0 - 1;
4591 memcpy (dot_name + 1, name, len + 1);
4592 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4593 bfd_release (abfd, dot_name);
4597 /* This function satisfies all old ABI object references to ".bar" if a
4598 new ABI object defines "bar". Well, at least, undefined dot symbols
4599 are made weak. This stops later archive searches from including an
4600 object if we already have a function descriptor definition. It also
4601 prevents the linker complaining about undefined symbols.
4602 We also check and correct mismatched symbol visibility here. The
4603 most restrictive visibility of the function descriptor and the
4604 function entry symbol is used. */
4607 add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
4609 struct ppc_link_hash_table *htab;
4610 struct ppc_link_hash_entry *fdh;
4612 if (eh->elf.root.type == bfd_link_hash_indirect)
4615 if (eh->elf.root.type == bfd_link_hash_warning)
4616 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
4618 if (eh->elf.root.root.string[0] != '.')
4621 htab = ppc_hash_table (info);
4625 fdh = lookup_fdh (eh, htab);
4628 if (!info->relocatable
4629 && (eh->elf.root.type == bfd_link_hash_undefined
4630 || eh->elf.root.type == bfd_link_hash_undefweak)
4631 && eh->elf.ref_regular)
4633 /* Make an undefweak function descriptor sym, which is enough to
4634 pull in an --as-needed shared lib, but won't cause link
4635 errors. Archives are handled elsewhere. */
4636 fdh = make_fdh (info, eh);
4639 fdh->elf.ref_regular = 1;
4644 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4645 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4646 if (entry_vis < descr_vis)
4647 fdh->elf.other += entry_vis - descr_vis;
4648 else if (entry_vis > descr_vis)
4649 eh->elf.other += descr_vis - entry_vis;
4651 if ((fdh->elf.root.type == bfd_link_hash_defined
4652 || fdh->elf.root.type == bfd_link_hash_defweak)
4653 && eh->elf.root.type == bfd_link_hash_undefined)
4655 eh->elf.root.type = bfd_link_hash_undefweak;
4656 eh->was_undefined = 1;
4657 htab->twiddled_syms = 1;
4664 /* Process list of dot-symbols we made in link_hash_newfunc. */
4667 ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
4669 struct ppc_link_hash_table *htab;
4670 struct ppc_link_hash_entry **p, *eh;
4672 if (!is_ppc64_elf (info->output_bfd))
4674 htab = ppc_hash_table (info);
4678 if (is_ppc64_elf (ibfd))
4680 p = &htab->dot_syms;
4681 while ((eh = *p) != NULL)
4684 if (!add_symbol_adjust (eh, info))
4686 p = &eh->u.next_dot_sym;
4690 /* Clear the list for non-ppc64 input files. */
4691 p = &htab->dot_syms;
4692 while ((eh = *p) != NULL)
4695 p = &eh->u.next_dot_sym;
4698 /* We need to fix the undefs list for any syms we have twiddled to
4700 if (htab->twiddled_syms)
4702 bfd_link_repair_undef_list (&htab->elf.root);
4703 htab->twiddled_syms = 0;
4708 /* Undo hash table changes when an --as-needed input file is determined
4709 not to be needed. */
4712 ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4713 struct bfd_link_info *info)
4715 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4720 htab->dot_syms = NULL;
4724 static struct plt_entry **
4725 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4726 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4728 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4729 struct plt_entry **local_plt;
4730 char *local_got_tls_masks;
4732 if (local_got_ents == NULL)
4734 bfd_size_type size = symtab_hdr->sh_info;
4736 size *= (sizeof (*local_got_ents)
4737 + sizeof (*local_plt)
4738 + sizeof (*local_got_tls_masks));
4739 local_got_ents = bfd_zalloc (abfd, size);
4740 if (local_got_ents == NULL)
4742 elf_local_got_ents (abfd) = local_got_ents;
4745 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
4747 struct got_entry *ent;
4749 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4750 if (ent->addend == r_addend
4751 && ent->owner == abfd
4752 && ent->tls_type == tls_type)
4756 bfd_size_type amt = sizeof (*ent);
4757 ent = bfd_alloc (abfd, amt);
4760 ent->next = local_got_ents[r_symndx];
4761 ent->addend = r_addend;
4763 ent->tls_type = tls_type;
4764 ent->is_indirect = FALSE;
4765 ent->got.refcount = 0;
4766 local_got_ents[r_symndx] = ent;
4768 ent->got.refcount += 1;
4771 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
4772 local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
4773 local_got_tls_masks[r_symndx] |= tls_type;
4775 return local_plt + r_symndx;
4779 update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
4781 struct plt_entry *ent;
4783 for (ent = *plist; ent != NULL; ent = ent->next)
4784 if (ent->addend == addend)
4788 bfd_size_type amt = sizeof (*ent);
4789 ent = bfd_alloc (abfd, amt);
4793 ent->addend = addend;
4794 ent->plt.refcount = 0;
4797 ent->plt.refcount += 1;
4802 is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4804 return (r_type == R_PPC64_REL24
4805 || r_type == R_PPC64_REL14
4806 || r_type == R_PPC64_REL14_BRTAKEN
4807 || r_type == R_PPC64_REL14_BRNTAKEN
4808 || r_type == R_PPC64_ADDR24
4809 || r_type == R_PPC64_ADDR14
4810 || r_type == R_PPC64_ADDR14_BRTAKEN
4811 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4814 /* Look through the relocs for a section during the first phase, and
4815 calculate needed space in the global offset table, procedure
4816 linkage table, and dynamic reloc sections. */
4819 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4820 asection *sec, const Elf_Internal_Rela *relocs)
4822 struct ppc_link_hash_table *htab;
4823 Elf_Internal_Shdr *symtab_hdr;
4824 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4825 const Elf_Internal_Rela *rel;
4826 const Elf_Internal_Rela *rel_end;
4828 asection **opd_sym_map;
4829 struct elf_link_hash_entry *tga, *dottga;
4831 if (info->relocatable)
4834 /* Don't do anything special with non-loaded, non-alloced sections.
4835 In particular, any relocs in such sections should not affect GOT
4836 and PLT reference counting (ie. we don't allow them to create GOT
4837 or PLT entries), there's no possibility or desire to optimize TLS
4838 relocs, and there's not much point in propagating relocs to shared
4839 libs that the dynamic linker won't relocate. */
4840 if ((sec->flags & SEC_ALLOC) == 0)
4843 BFD_ASSERT (is_ppc64_elf (abfd));
4845 htab = ppc_hash_table (info);
4849 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4850 FALSE, FALSE, TRUE);
4851 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4852 FALSE, FALSE, TRUE);
4853 symtab_hdr = &elf_symtab_hdr (abfd);
4855 sym_hashes = elf_sym_hashes (abfd);
4856 sym_hashes_end = (sym_hashes
4857 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4858 - symtab_hdr->sh_info);
4862 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4864 /* Garbage collection needs some extra help with .opd sections.
4865 We don't want to necessarily keep everything referenced by
4866 relocs in .opd, as that would keep all functions. Instead,
4867 if we reference an .opd symbol (a function descriptor), we
4868 want to keep the function code symbol's section. This is
4869 easy for global symbols, but for local syms we need to keep
4870 information about the associated function section. */
4873 amt = sec->size * sizeof (*opd_sym_map) / 8;
4874 opd_sym_map = bfd_zalloc (abfd, amt);
4875 if (opd_sym_map == NULL)
4877 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
4878 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4879 ppc64_elf_section_data (sec)->sec_type = sec_opd;
4882 if (htab->sfpr == NULL
4883 && !create_linkage_sections (htab->elf.dynobj, info))
4886 rel_end = relocs + sec->reloc_count;
4887 for (rel = relocs; rel < rel_end; rel++)
4889 unsigned long r_symndx;
4890 struct elf_link_hash_entry *h;
4891 enum elf_ppc64_reloc_type r_type;
4893 struct _ppc64_elf_section_data *ppc64_sec;
4894 struct plt_entry **ifunc;
4896 r_symndx = ELF64_R_SYM (rel->r_info);
4897 if (r_symndx < symtab_hdr->sh_info)
4901 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4902 h = elf_follow_link (h);
4909 if (h->type == STT_GNU_IFUNC)
4912 ifunc = &h->plt.plist;
4917 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
4922 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
4924 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
4925 rel->r_addend, PLT_IFUNC);
4930 r_type = ELF64_R_TYPE (rel->r_info);
4931 if (is_branch_reloc (r_type))
4933 if (h != NULL && (h == tga || h == dottga))
4936 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
4937 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
4938 /* We have a new-style __tls_get_addr call with a marker
4942 /* Mark this section as having an old-style call. */
4943 sec->has_tls_get_addr_call = 1;
4946 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4948 && !update_plt_info (abfd, ifunc, rel->r_addend))
4956 /* These special tls relocs tie a call to __tls_get_addr with
4957 its parameter symbol. */
4960 case R_PPC64_GOT_TLSLD16:
4961 case R_PPC64_GOT_TLSLD16_LO:
4962 case R_PPC64_GOT_TLSLD16_HI:
4963 case R_PPC64_GOT_TLSLD16_HA:
4964 tls_type = TLS_TLS | TLS_LD;
4967 case R_PPC64_GOT_TLSGD16:
4968 case R_PPC64_GOT_TLSGD16_LO:
4969 case R_PPC64_GOT_TLSGD16_HI:
4970 case R_PPC64_GOT_TLSGD16_HA:
4971 tls_type = TLS_TLS | TLS_GD;
4974 case R_PPC64_GOT_TPREL16_DS:
4975 case R_PPC64_GOT_TPREL16_LO_DS:
4976 case R_PPC64_GOT_TPREL16_HI:
4977 case R_PPC64_GOT_TPREL16_HA:
4978 if (!info->executable)
4979 info->flags |= DF_STATIC_TLS;
4980 tls_type = TLS_TLS | TLS_TPREL;
4983 case R_PPC64_GOT_DTPREL16_DS:
4984 case R_PPC64_GOT_DTPREL16_LO_DS:
4985 case R_PPC64_GOT_DTPREL16_HI:
4986 case R_PPC64_GOT_DTPREL16_HA:
4987 tls_type = TLS_TLS | TLS_DTPREL;
4989 sec->has_tls_reloc = 1;
4993 case R_PPC64_GOT16_DS:
4994 case R_PPC64_GOT16_HA:
4995 case R_PPC64_GOT16_HI:
4996 case R_PPC64_GOT16_LO:
4997 case R_PPC64_GOT16_LO_DS:
4998 /* This symbol requires a global offset table entry. */
4999 sec->has_toc_reloc = 1;
5000 if (ppc64_elf_tdata (abfd)->got == NULL
5001 && !create_got_section (abfd, info))
5006 struct ppc_link_hash_entry *eh;
5007 struct got_entry *ent;
5009 eh = (struct ppc_link_hash_entry *) h;
5010 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5011 if (ent->addend == rel->r_addend
5012 && ent->owner == abfd
5013 && ent->tls_type == tls_type)
5017 bfd_size_type amt = sizeof (*ent);
5018 ent = bfd_alloc (abfd, amt);
5021 ent->next = eh->elf.got.glist;
5022 ent->addend = rel->r_addend;
5024 ent->tls_type = tls_type;
5025 ent->is_indirect = FALSE;
5026 ent->got.refcount = 0;
5027 eh->elf.got.glist = ent;
5029 ent->got.refcount += 1;
5030 eh->tls_mask |= tls_type;
5033 /* This is a global offset table entry for a local symbol. */
5034 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5035 rel->r_addend, tls_type))
5039 case R_PPC64_PLT16_HA:
5040 case R_PPC64_PLT16_HI:
5041 case R_PPC64_PLT16_LO:
5044 /* This symbol requires a procedure linkage table entry. We
5045 actually build the entry in adjust_dynamic_symbol,
5046 because this might be a case of linking PIC code without
5047 linking in any dynamic objects, in which case we don't
5048 need to generate a procedure linkage table after all. */
5051 /* It does not make sense to have a procedure linkage
5052 table entry for a local symbol. */
5053 bfd_set_error (bfd_error_bad_value);
5058 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5061 if (h->root.root.string[0] == '.'
5062 && h->root.root.string[1] != '\0')
5063 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5067 /* The following relocations don't need to propagate the
5068 relocation if linking a shared object since they are
5069 section relative. */
5070 case R_PPC64_SECTOFF:
5071 case R_PPC64_SECTOFF_LO:
5072 case R_PPC64_SECTOFF_HI:
5073 case R_PPC64_SECTOFF_HA:
5074 case R_PPC64_SECTOFF_DS:
5075 case R_PPC64_SECTOFF_LO_DS:
5076 case R_PPC64_DTPREL16:
5077 case R_PPC64_DTPREL16_LO:
5078 case R_PPC64_DTPREL16_HI:
5079 case R_PPC64_DTPREL16_HA:
5080 case R_PPC64_DTPREL16_DS:
5081 case R_PPC64_DTPREL16_LO_DS:
5082 case R_PPC64_DTPREL16_HIGHER:
5083 case R_PPC64_DTPREL16_HIGHERA:
5084 case R_PPC64_DTPREL16_HIGHEST:
5085 case R_PPC64_DTPREL16_HIGHESTA:
5090 case R_PPC64_REL16_LO:
5091 case R_PPC64_REL16_HI:
5092 case R_PPC64_REL16_HA:
5096 case R_PPC64_TOC16_LO:
5097 case R_PPC64_TOC16_HI:
5098 case R_PPC64_TOC16_HA:
5099 case R_PPC64_TOC16_DS:
5100 case R_PPC64_TOC16_LO_DS:
5101 sec->has_toc_reloc = 1;
5104 /* This relocation describes the C++ object vtable hierarchy.
5105 Reconstruct it for later use during GC. */
5106 case R_PPC64_GNU_VTINHERIT:
5107 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5111 /* This relocation describes which C++ vtable entries are actually
5112 used. Record for later use during GC. */
5113 case R_PPC64_GNU_VTENTRY:
5114 BFD_ASSERT (h != NULL);
5116 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5121 case R_PPC64_REL14_BRTAKEN:
5122 case R_PPC64_REL14_BRNTAKEN:
5124 asection *dest = NULL;
5126 /* Heuristic: If jumping outside our section, chances are
5127 we are going to need a stub. */
5130 /* If the sym is weak it may be overridden later, so
5131 don't assume we know where a weak sym lives. */
5132 if (h->root.type == bfd_link_hash_defined)
5133 dest = h->root.u.def.section;
5137 Elf_Internal_Sym *isym;
5139 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5144 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5148 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
5153 if (h != NULL && ifunc == NULL)
5155 /* We may need a .plt entry if the function this reloc
5156 refers to is in a shared lib. */
5157 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5160 if (h->root.root.string[0] == '.'
5161 && h->root.root.string[1] != '\0')
5162 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5163 if (h == tga || h == dottga)
5164 sec->has_tls_reloc = 1;
5168 case R_PPC64_TPREL64:
5169 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
5170 if (!info->executable)
5171 info->flags |= DF_STATIC_TLS;
5174 case R_PPC64_DTPMOD64:
5175 if (rel + 1 < rel_end
5176 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5177 && rel[1].r_offset == rel->r_offset + 8)
5178 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
5180 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
5183 case R_PPC64_DTPREL64:
5184 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5186 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5187 && rel[-1].r_offset == rel->r_offset - 8)
5188 /* This is the second reloc of a dtpmod, dtprel pair.
5189 Don't mark with TLS_DTPREL. */
5193 sec->has_tls_reloc = 1;
5196 struct ppc_link_hash_entry *eh;
5197 eh = (struct ppc_link_hash_entry *) h;
5198 eh->tls_mask |= tls_type;
5201 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5202 rel->r_addend, tls_type))
5205 ppc64_sec = ppc64_elf_section_data (sec);
5206 if (ppc64_sec->sec_type != sec_toc)
5210 /* One extra to simplify get_tls_mask. */
5211 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5212 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5213 if (ppc64_sec->u.toc.symndx == NULL)
5215 amt = sec->size * sizeof (bfd_vma) / 8;
5216 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5217 if (ppc64_sec->u.toc.add == NULL)
5219 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5220 ppc64_sec->sec_type = sec_toc;
5222 BFD_ASSERT (rel->r_offset % 8 == 0);
5223 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5224 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
5226 /* Mark the second slot of a GD or LD entry.
5227 -1 to indicate GD and -2 to indicate LD. */
5228 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
5229 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
5230 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
5231 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
5234 case R_PPC64_TPREL16:
5235 case R_PPC64_TPREL16_LO:
5236 case R_PPC64_TPREL16_HI:
5237 case R_PPC64_TPREL16_HA:
5238 case R_PPC64_TPREL16_DS:
5239 case R_PPC64_TPREL16_LO_DS:
5240 case R_PPC64_TPREL16_HIGHER:
5241 case R_PPC64_TPREL16_HIGHERA:
5242 case R_PPC64_TPREL16_HIGHEST:
5243 case R_PPC64_TPREL16_HIGHESTA:
5246 if (!info->executable)
5247 info->flags |= DF_STATIC_TLS;
5252 case R_PPC64_ADDR64:
5253 if (opd_sym_map != NULL
5254 && rel + 1 < rel_end
5255 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
5259 if (h->root.root.string[0] == '.'
5260 && h->root.root.string[1] != 0
5261 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
5264 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5269 Elf_Internal_Sym *isym;
5271 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5276 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5277 if (s != NULL && s != sec)
5278 opd_sym_map[rel->r_offset / 8] = s;
5286 case R_PPC64_ADDR14:
5287 case R_PPC64_ADDR14_BRNTAKEN:
5288 case R_PPC64_ADDR14_BRTAKEN:
5289 case R_PPC64_ADDR16:
5290 case R_PPC64_ADDR16_DS:
5291 case R_PPC64_ADDR16_HA:
5292 case R_PPC64_ADDR16_HI:
5293 case R_PPC64_ADDR16_HIGHER:
5294 case R_PPC64_ADDR16_HIGHERA:
5295 case R_PPC64_ADDR16_HIGHEST:
5296 case R_PPC64_ADDR16_HIGHESTA:
5297 case R_PPC64_ADDR16_LO:
5298 case R_PPC64_ADDR16_LO_DS:
5299 case R_PPC64_ADDR24:
5300 case R_PPC64_ADDR32:
5301 case R_PPC64_UADDR16:
5302 case R_PPC64_UADDR32:
5303 case R_PPC64_UADDR64:
5305 if (h != NULL && !info->shared)
5306 /* We may need a copy reloc. */
5309 /* Don't propagate .opd relocs. */
5310 if (NO_OPD_RELOCS && opd_sym_map != NULL)
5313 /* If we are creating a shared library, and this is a reloc
5314 against a global symbol, or a non PC relative reloc
5315 against a local symbol, then we need to copy the reloc
5316 into the shared library. However, if we are linking with
5317 -Bsymbolic, we do not need to copy a reloc against a
5318 global symbol which is defined in an object we are
5319 including in the link (i.e., DEF_REGULAR is set). At
5320 this point we have not seen all the input files, so it is
5321 possible that DEF_REGULAR is not set now but will be set
5322 later (it is never cleared). In case of a weak definition,
5323 DEF_REGULAR may be cleared later by a strong definition in
5324 a shared library. We account for that possibility below by
5325 storing information in the dyn_relocs field of the hash
5326 table entry. A similar situation occurs when creating
5327 shared libraries and symbol visibility changes render the
5330 If on the other hand, we are creating an executable, we
5331 may need to keep relocations for symbols satisfied by a
5332 dynamic library if we manage to avoid copy relocs for the
5336 && (must_be_dyn_reloc (info, r_type)
5338 && (! info->symbolic
5339 || h->root.type == bfd_link_hash_defweak
5340 || !h->def_regular))))
5341 || (ELIMINATE_COPY_RELOCS
5344 && (h->root.type == bfd_link_hash_defweak
5345 || !h->def_regular))
5349 struct ppc_dyn_relocs *p;
5350 struct ppc_dyn_relocs **head;
5352 /* We must copy these reloc types into the output file.
5353 Create a reloc section in dynobj and make room for
5357 sreloc = _bfd_elf_make_dynamic_reloc_section
5358 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
5364 /* If this is a global symbol, we count the number of
5365 relocations we need for this symbol. */
5368 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5372 /* Track dynamic relocs needed for local syms too.
5373 We really need local syms available to do this
5377 Elf_Internal_Sym *isym;
5379 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5384 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5388 vpp = &elf_section_data (s)->local_dynrel;
5389 head = (struct ppc_dyn_relocs **) vpp;
5393 if (p == NULL || p->sec != sec)
5395 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5406 if (!must_be_dyn_reloc (info, r_type))
5419 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5420 of the code entry point, and its section. */
5423 opd_entry_value (asection *opd_sec,
5425 asection **code_sec,
5428 bfd *opd_bfd = opd_sec->owner;
5429 Elf_Internal_Rela *relocs;
5430 Elf_Internal_Rela *lo, *hi, *look;
5433 /* No relocs implies we are linking a --just-symbols object. */
5434 if (opd_sec->reloc_count == 0)
5436 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
5437 return (bfd_vma) -1;
5439 if (code_sec != NULL)
5441 asection *sec, *likely = NULL;
5442 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5444 && (sec->flags & SEC_LOAD) != 0
5445 && (sec->flags & SEC_ALLOC) != 0)
5450 if (code_off != NULL)
5451 *code_off = val - likely->vma;
5457 BFD_ASSERT (is_ppc64_elf (opd_bfd));
5459 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5461 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
5463 /* Go find the opd reloc at the sym address. */
5465 BFD_ASSERT (lo != NULL);
5466 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
5470 look = lo + (hi - lo) / 2;
5471 if (look->r_offset < offset)
5473 else if (look->r_offset > offset)
5477 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5479 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5480 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5482 unsigned long symndx = ELF64_R_SYM (look->r_info);
5485 if (symndx < symtab_hdr->sh_info)
5487 Elf_Internal_Sym *sym;
5489 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5492 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5493 symtab_hdr->sh_info,
5494 0, NULL, NULL, NULL);
5497 symtab_hdr->contents = (bfd_byte *) sym;
5501 val = sym->st_value;
5502 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5503 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5507 struct elf_link_hash_entry **sym_hashes;
5508 struct elf_link_hash_entry *rh;
5510 sym_hashes = elf_sym_hashes (opd_bfd);
5511 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5512 rh = elf_follow_link (rh);
5513 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5514 || rh->root.type == bfd_link_hash_defweak);
5515 val = rh->root.u.def.value;
5516 sec = rh->root.u.def.section;
5518 val += look->r_addend;
5519 if (code_off != NULL)
5521 if (code_sec != NULL)
5523 if (sec != NULL && sec->output_section != NULL)
5524 val += sec->output_section->vma + sec->output_offset;
5533 /* If FDH is a function descriptor symbol, return the associated code
5534 entry symbol if it is defined. Return NULL otherwise. */
5536 static struct ppc_link_hash_entry *
5537 defined_code_entry (struct ppc_link_hash_entry *fdh)
5539 if (fdh->is_func_descriptor)
5541 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5542 if (fh->elf.root.type == bfd_link_hash_defined
5543 || fh->elf.root.type == bfd_link_hash_defweak)
5549 /* If FH is a function code entry symbol, return the associated
5550 function descriptor symbol if it is defined. Return NULL otherwise. */
5552 static struct ppc_link_hash_entry *
5553 defined_func_desc (struct ppc_link_hash_entry *fh)
5556 && fh->oh->is_func_descriptor)
5558 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5559 if (fdh->elf.root.type == bfd_link_hash_defined
5560 || fdh->elf.root.type == bfd_link_hash_defweak)
5566 /* Mark all our entry sym sections, both opd and code section. */
5569 ppc64_elf_gc_keep (struct bfd_link_info *info)
5571 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5572 struct bfd_sym_chain *sym;
5577 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5579 struct ppc_link_hash_entry *eh, *fh;
5582 eh = (struct ppc_link_hash_entry *)
5583 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
5586 if (eh->elf.root.type != bfd_link_hash_defined
5587 && eh->elf.root.type != bfd_link_hash_defweak)
5590 fh = defined_code_entry (eh);
5593 sec = fh->elf.root.u.def.section;
5594 sec->flags |= SEC_KEEP;
5596 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5597 && opd_entry_value (eh->elf.root.u.def.section,
5598 eh->elf.root.u.def.value,
5599 &sec, NULL) != (bfd_vma) -1)
5600 sec->flags |= SEC_KEEP;
5602 sec = eh->elf.root.u.def.section;
5603 sec->flags |= SEC_KEEP;
5607 /* Mark sections containing dynamically referenced symbols. When
5608 building shared libraries, we must assume that any visible symbol is
5612 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5614 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5615 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5616 struct ppc_link_hash_entry *fdh;
5618 if (eh->elf.root.type == bfd_link_hash_warning)
5619 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5621 /* Dynamic linking info is on the func descriptor sym. */
5622 fdh = defined_func_desc (eh);
5626 if ((eh->elf.root.type == bfd_link_hash_defined
5627 || eh->elf.root.type == bfd_link_hash_defweak)
5628 && (eh->elf.ref_dynamic
5629 || (!info->executable
5630 && eh->elf.def_regular
5631 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5632 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5635 struct ppc_link_hash_entry *fh;
5637 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5639 /* Function descriptor syms cause the associated
5640 function code sym section to be marked. */
5641 fh = defined_code_entry (eh);
5644 code_sec = fh->elf.root.u.def.section;
5645 code_sec->flags |= SEC_KEEP;
5647 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5648 && opd_entry_value (eh->elf.root.u.def.section,
5649 eh->elf.root.u.def.value,
5650 &code_sec, NULL) != (bfd_vma) -1)
5651 code_sec->flags |= SEC_KEEP;
5657 /* Return the section that should be marked against GC for a given
5661 ppc64_elf_gc_mark_hook (asection *sec,
5662 struct bfd_link_info *info,
5663 Elf_Internal_Rela *rel,
5664 struct elf_link_hash_entry *h,
5665 Elf_Internal_Sym *sym)
5669 /* Syms return NULL if we're marking .opd, so we avoid marking all
5670 function sections, as all functions are referenced in .opd. */
5672 if (get_opd_info (sec) != NULL)
5677 enum elf_ppc64_reloc_type r_type;
5678 struct ppc_link_hash_entry *eh, *fh, *fdh;
5680 r_type = ELF64_R_TYPE (rel->r_info);
5683 case R_PPC64_GNU_VTINHERIT:
5684 case R_PPC64_GNU_VTENTRY:
5688 switch (h->root.type)
5690 case bfd_link_hash_defined:
5691 case bfd_link_hash_defweak:
5692 eh = (struct ppc_link_hash_entry *) h;
5693 fdh = defined_func_desc (eh);
5697 /* Function descriptor syms cause the associated
5698 function code sym section to be marked. */
5699 fh = defined_code_entry (eh);
5702 /* They also mark their opd section. */
5703 eh->elf.root.u.def.section->gc_mark = 1;
5705 rsec = fh->elf.root.u.def.section;
5707 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5708 && opd_entry_value (eh->elf.root.u.def.section,
5709 eh->elf.root.u.def.value,
5710 &rsec, NULL) != (bfd_vma) -1)
5711 eh->elf.root.u.def.section->gc_mark = 1;
5713 rsec = h->root.u.def.section;
5716 case bfd_link_hash_common:
5717 rsec = h->root.u.c.p->section;
5721 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5727 struct _opd_sec_data *opd;
5729 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5730 opd = get_opd_info (rsec);
5731 if (opd != NULL && opd->func_sec != NULL)
5735 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
5742 /* Update the .got, .plt. and dynamic reloc reference counts for the
5743 section being removed. */
5746 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5747 asection *sec, const Elf_Internal_Rela *relocs)
5749 struct ppc_link_hash_table *htab;
5750 Elf_Internal_Shdr *symtab_hdr;
5751 struct elf_link_hash_entry **sym_hashes;
5752 struct got_entry **local_got_ents;
5753 const Elf_Internal_Rela *rel, *relend;
5755 if (info->relocatable)
5758 if ((sec->flags & SEC_ALLOC) == 0)
5761 elf_section_data (sec)->local_dynrel = NULL;
5763 htab = ppc_hash_table (info);
5767 symtab_hdr = &elf_symtab_hdr (abfd);
5768 sym_hashes = elf_sym_hashes (abfd);
5769 local_got_ents = elf_local_got_ents (abfd);
5771 relend = relocs + sec->reloc_count;
5772 for (rel = relocs; rel < relend; rel++)
5774 unsigned long r_symndx;
5775 enum elf_ppc64_reloc_type r_type;
5776 struct elf_link_hash_entry *h = NULL;
5779 r_symndx = ELF64_R_SYM (rel->r_info);
5780 r_type = ELF64_R_TYPE (rel->r_info);
5781 if (r_symndx >= symtab_hdr->sh_info)
5783 struct ppc_link_hash_entry *eh;
5784 struct ppc_dyn_relocs **pp;
5785 struct ppc_dyn_relocs *p;
5787 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5788 h = elf_follow_link (h);
5789 eh = (struct ppc_link_hash_entry *) h;
5791 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5794 /* Everything must go for SEC. */
5800 if (is_branch_reloc (r_type))
5802 struct plt_entry **ifunc = NULL;
5805 if (h->type == STT_GNU_IFUNC)
5806 ifunc = &h->plt.plist;
5808 else if (local_got_ents != NULL)
5810 struct plt_entry **local_plt = (struct plt_entry **)
5811 (local_got_ents + symtab_hdr->sh_info);
5812 char *local_got_tls_masks = (char *)
5813 (local_plt + symtab_hdr->sh_info);
5814 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5815 ifunc = local_plt + r_symndx;
5819 struct plt_entry *ent;
5821 for (ent = *ifunc; ent != NULL; ent = ent->next)
5822 if (ent->addend == rel->r_addend)
5826 if (ent->plt.refcount > 0)
5827 ent->plt.refcount -= 1;
5834 case R_PPC64_GOT_TLSLD16:
5835 case R_PPC64_GOT_TLSLD16_LO:
5836 case R_PPC64_GOT_TLSLD16_HI:
5837 case R_PPC64_GOT_TLSLD16_HA:
5838 tls_type = TLS_TLS | TLS_LD;
5841 case R_PPC64_GOT_TLSGD16:
5842 case R_PPC64_GOT_TLSGD16_LO:
5843 case R_PPC64_GOT_TLSGD16_HI:
5844 case R_PPC64_GOT_TLSGD16_HA:
5845 tls_type = TLS_TLS | TLS_GD;
5848 case R_PPC64_GOT_TPREL16_DS:
5849 case R_PPC64_GOT_TPREL16_LO_DS:
5850 case R_PPC64_GOT_TPREL16_HI:
5851 case R_PPC64_GOT_TPREL16_HA:
5852 tls_type = TLS_TLS | TLS_TPREL;
5855 case R_PPC64_GOT_DTPREL16_DS:
5856 case R_PPC64_GOT_DTPREL16_LO_DS:
5857 case R_PPC64_GOT_DTPREL16_HI:
5858 case R_PPC64_GOT_DTPREL16_HA:
5859 tls_type = TLS_TLS | TLS_DTPREL;
5863 case R_PPC64_GOT16_DS:
5864 case R_PPC64_GOT16_HA:
5865 case R_PPC64_GOT16_HI:
5866 case R_PPC64_GOT16_LO:
5867 case R_PPC64_GOT16_LO_DS:
5870 struct got_entry *ent;
5875 ent = local_got_ents[r_symndx];
5877 for (; ent != NULL; ent = ent->next)
5878 if (ent->addend == rel->r_addend
5879 && ent->owner == abfd
5880 && ent->tls_type == tls_type)
5884 if (ent->got.refcount > 0)
5885 ent->got.refcount -= 1;
5889 case R_PPC64_PLT16_HA:
5890 case R_PPC64_PLT16_HI:
5891 case R_PPC64_PLT16_LO:
5895 case R_PPC64_REL14_BRNTAKEN:
5896 case R_PPC64_REL14_BRTAKEN:
5900 struct plt_entry *ent;
5902 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5903 if (ent->addend == rel->r_addend)
5905 if (ent != NULL && ent->plt.refcount > 0)
5906 ent->plt.refcount -= 1;
5917 /* The maximum size of .sfpr. */
5918 #define SFPR_MAX (218*4)
5920 struct sfpr_def_parms
5922 const char name[12];
5923 unsigned char lo, hi;
5924 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5925 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5928 /* Auto-generate _save*, _rest* functions in .sfpr. */
5931 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5933 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5935 size_t len = strlen (parm->name);
5936 bfd_boolean writing = FALSE;
5942 memcpy (sym, parm->name, len);
5945 for (i = parm->lo; i <= parm->hi; i++)
5947 struct elf_link_hash_entry *h;
5949 sym[len + 0] = i / 10 + '0';
5950 sym[len + 1] = i % 10 + '0';
5951 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5955 h->root.type = bfd_link_hash_defined;
5956 h->root.u.def.section = htab->sfpr;
5957 h->root.u.def.value = htab->sfpr->size;
5960 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5962 if (htab->sfpr->contents == NULL)
5964 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5965 if (htab->sfpr->contents == NULL)
5971 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5973 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5975 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5976 htab->sfpr->size = p - htab->sfpr->contents;
5984 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5986 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5991 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5993 p = savegpr0 (abfd, p, r);
5994 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5996 bfd_put_32 (abfd, BLR, p);
6001 restgpr0 (bfd *abfd, bfd_byte *p, int r)
6003 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6008 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6010 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6012 p = restgpr0 (abfd, p, r);
6013 bfd_put_32 (abfd, MTLR_R0, p);
6017 p = restgpr0 (abfd, p, 30);
6018 p = restgpr0 (abfd, p, 31);
6020 bfd_put_32 (abfd, BLR, p);
6025 savegpr1 (bfd *abfd, bfd_byte *p, int r)
6027 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6032 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6034 p = savegpr1 (abfd, p, r);
6035 bfd_put_32 (abfd, BLR, p);
6040 restgpr1 (bfd *abfd, bfd_byte *p, int r)
6042 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6047 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6049 p = restgpr1 (abfd, p, r);
6050 bfd_put_32 (abfd, BLR, p);
6055 savefpr (bfd *abfd, bfd_byte *p, int r)
6057 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6062 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6064 p = savefpr (abfd, p, r);
6065 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6067 bfd_put_32 (abfd, BLR, p);
6072 restfpr (bfd *abfd, bfd_byte *p, int r)
6074 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6079 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6081 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6083 p = restfpr (abfd, p, r);
6084 bfd_put_32 (abfd, MTLR_R0, p);
6088 p = restfpr (abfd, p, 30);
6089 p = restfpr (abfd, p, 31);
6091 bfd_put_32 (abfd, BLR, p);
6096 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6098 p = savefpr (abfd, p, r);
6099 bfd_put_32 (abfd, BLR, p);
6104 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6106 p = restfpr (abfd, p, r);
6107 bfd_put_32 (abfd, BLR, p);
6112 savevr (bfd *abfd, bfd_byte *p, int r)
6114 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6116 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6121 savevr_tail (bfd *abfd, bfd_byte *p, int r)
6123 p = savevr (abfd, p, r);
6124 bfd_put_32 (abfd, BLR, p);
6129 restvr (bfd *abfd, bfd_byte *p, int r)
6131 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6133 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6138 restvr_tail (bfd *abfd, bfd_byte *p, int r)
6140 p = restvr (abfd, p, r);
6141 bfd_put_32 (abfd, BLR, p);
6145 /* Called via elf_link_hash_traverse to transfer dynamic linking
6146 information on function code symbol entries to their corresponding
6147 function descriptor symbol entries. */
6150 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
6152 struct bfd_link_info *info;
6153 struct ppc_link_hash_table *htab;
6154 struct plt_entry *ent;
6155 struct ppc_link_hash_entry *fh;
6156 struct ppc_link_hash_entry *fdh;
6157 bfd_boolean force_local;
6159 fh = (struct ppc_link_hash_entry *) h;
6160 if (fh->elf.root.type == bfd_link_hash_indirect)
6163 if (fh->elf.root.type == bfd_link_hash_warning)
6164 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
6167 htab = ppc_hash_table (info);
6171 /* Resolve undefined references to dot-symbols as the value
6172 in the function descriptor, if we have one in a regular object.
6173 This is to satisfy cases like ".quad .foo". Calls to functions
6174 in dynamic objects are handled elsewhere. */
6175 if (fh->elf.root.type == bfd_link_hash_undefweak
6176 && fh->was_undefined
6177 && (fdh = defined_func_desc (fh)) != NULL
6178 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6179 && opd_entry_value (fdh->elf.root.u.def.section,
6180 fdh->elf.root.u.def.value,
6181 &fh->elf.root.u.def.section,
6182 &fh->elf.root.u.def.value) != (bfd_vma) -1)
6184 fh->elf.root.type = fdh->elf.root.type;
6185 fh->elf.forced_local = 1;
6186 fh->elf.def_regular = fdh->elf.def_regular;
6187 fh->elf.def_dynamic = fdh->elf.def_dynamic;
6190 /* If this is a function code symbol, transfer dynamic linking
6191 information to the function descriptor symbol. */
6195 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
6196 if (ent->plt.refcount > 0)
6199 || fh->elf.root.root.string[0] != '.'
6200 || fh->elf.root.root.string[1] == '\0')
6203 /* Find the corresponding function descriptor symbol. Create it
6204 as undefined if necessary. */
6206 fdh = lookup_fdh (fh, htab);
6208 && !info->executable
6209 && (fh->elf.root.type == bfd_link_hash_undefined
6210 || fh->elf.root.type == bfd_link_hash_undefweak))
6212 fdh = make_fdh (info, fh);
6217 /* Fake function descriptors are made undefweak. If the function
6218 code symbol is strong undefined, make the fake sym the same.
6219 If the function code symbol is defined, then force the fake
6220 descriptor local; We can't support overriding of symbols in a
6221 shared library on a fake descriptor. */
6225 && fdh->elf.root.type == bfd_link_hash_undefweak)
6227 if (fh->elf.root.type == bfd_link_hash_undefined)
6229 fdh->elf.root.type = bfd_link_hash_undefined;
6230 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6232 else if (fh->elf.root.type == bfd_link_hash_defined
6233 || fh->elf.root.type == bfd_link_hash_defweak)
6235 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6240 && !fdh->elf.forced_local
6241 && (!info->executable
6242 || fdh->elf.def_dynamic
6243 || fdh->elf.ref_dynamic
6244 || (fdh->elf.root.type == bfd_link_hash_undefweak
6245 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6247 if (fdh->elf.dynindx == -1)
6248 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
6250 fdh->elf.ref_regular |= fh->elf.ref_regular;
6251 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6252 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6253 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
6254 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
6256 move_plt_plist (fh, fdh);
6257 fdh->elf.needs_plt = 1;
6259 fdh->is_func_descriptor = 1;
6264 /* Now that the info is on the function descriptor, clear the
6265 function code sym info. Any function code syms for which we
6266 don't have a definition in a regular file, we force local.
6267 This prevents a shared library from exporting syms that have
6268 been imported from another library. Function code syms that
6269 are really in the library we must leave global to prevent the
6270 linker dragging in a definition from a static library. */
6271 force_local = (!fh->elf.def_regular
6273 || !fdh->elf.def_regular
6274 || fdh->elf.forced_local);
6275 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6280 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6281 this hook to a) provide some gcc support functions, and b) transfer
6282 dynamic linking information gathered so far on function code symbol
6283 entries, to their corresponding function descriptor symbol entries. */
6286 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6287 struct bfd_link_info *info)
6289 struct ppc_link_hash_table *htab;
6291 const struct sfpr_def_parms funcs[] =
6293 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6294 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6295 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6296 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6297 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6298 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6299 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6300 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6301 { "._savef", 14, 31, savefpr, savefpr1_tail },
6302 { "._restf", 14, 31, restfpr, restfpr1_tail },
6303 { "_savevr_", 20, 31, savevr, savevr_tail },
6304 { "_restvr_", 20, 31, restvr, restvr_tail }
6307 htab = ppc_hash_table (info);
6311 if (htab->sfpr == NULL)
6312 /* We don't have any relocs. */
6315 /* Provide any missing _save* and _rest* functions. */
6316 htab->sfpr->size = 0;
6317 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6318 if (!sfpr_define (info, &funcs[i]))
6321 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
6323 if (htab->sfpr->size == 0)
6324 htab->sfpr->flags |= SEC_EXCLUDE;
6329 /* Adjust a symbol defined by a dynamic object and referenced by a
6330 regular object. The current definition is in some section of the
6331 dynamic object, but we're not including those sections. We have to
6332 change the definition to something the rest of the link can
6336 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6337 struct elf_link_hash_entry *h)
6339 struct ppc_link_hash_table *htab;
6342 htab = ppc_hash_table (info);
6346 /* Deal with function syms. */
6347 if (h->type == STT_FUNC
6348 || h->type == STT_GNU_IFUNC
6351 /* Clear procedure linkage table information for any symbol that
6352 won't need a .plt entry. */
6353 struct plt_entry *ent;
6354 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6355 if (ent->plt.refcount > 0)
6358 || (h->type != STT_GNU_IFUNC
6359 && (SYMBOL_CALLS_LOCAL (info, h)
6360 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6361 && h->root.type == bfd_link_hash_undefweak))))
6363 h->plt.plist = NULL;
6368 h->plt.plist = NULL;
6370 /* If this is a weak symbol, and there is a real definition, the
6371 processor independent code will have arranged for us to see the
6372 real definition first, and we can just use the same value. */
6373 if (h->u.weakdef != NULL)
6375 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6376 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6377 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6378 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6379 if (ELIMINATE_COPY_RELOCS)
6380 h->non_got_ref = h->u.weakdef->non_got_ref;
6384 /* If we are creating a shared library, we must presume that the
6385 only references to the symbol are via the global offset table.
6386 For such cases we need not do anything here; the relocations will
6387 be handled correctly by relocate_section. */
6391 /* If there are no references to this symbol that do not use the
6392 GOT, we don't need to generate a copy reloc. */
6393 if (!h->non_got_ref)
6396 /* Don't generate a copy reloc for symbols defined in the executable. */
6397 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6400 if (ELIMINATE_COPY_RELOCS)
6402 struct ppc_link_hash_entry * eh;
6403 struct ppc_dyn_relocs *p;
6405 eh = (struct ppc_link_hash_entry *) h;
6406 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6408 s = p->sec->output_section;
6409 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6413 /* If we didn't find any dynamic relocs in read-only sections, then
6414 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6422 if (h->plt.plist != NULL)
6424 /* We should never get here, but unfortunately there are versions
6425 of gcc out there that improperly (for this ABI) put initialized
6426 function pointers, vtable refs and suchlike in read-only
6427 sections. Allow them to proceed, but warn that this might
6428 break at runtime. */
6429 (*_bfd_error_handler)
6430 (_("copy reloc against `%s' requires lazy plt linking; "
6431 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6432 h->root.root.string);
6435 /* This is a reference to a symbol defined by a dynamic object which
6436 is not a function. */
6440 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
6441 h->root.root.string);
6445 /* We must allocate the symbol in our .dynbss section, which will
6446 become part of the .bss section of the executable. There will be
6447 an entry for this symbol in the .dynsym section. The dynamic
6448 object will contain position independent code, so all references
6449 from the dynamic object to this symbol will go through the global
6450 offset table. The dynamic linker will use the .dynsym entry to
6451 determine the address it must put in the global offset table, so
6452 both the dynamic object and the regular object will refer to the
6453 same memory location for the variable. */
6455 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6456 to copy the initial value out of the dynamic object and into the
6457 runtime process image. We need to remember the offset into the
6458 .rela.bss section we are going to use. */
6459 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6461 htab->relbss->size += sizeof (Elf64_External_Rela);
6467 return _bfd_elf_adjust_dynamic_copy (h, s);
6470 /* If given a function descriptor symbol, hide both the function code
6471 sym and the descriptor. */
6473 ppc64_elf_hide_symbol (struct bfd_link_info *info,
6474 struct elf_link_hash_entry *h,
6475 bfd_boolean force_local)
6477 struct ppc_link_hash_entry *eh;
6478 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6480 eh = (struct ppc_link_hash_entry *) h;
6481 if (eh->is_func_descriptor)
6483 struct ppc_link_hash_entry *fh = eh->oh;
6488 struct ppc_link_hash_table *htab;
6491 /* We aren't supposed to use alloca in BFD because on
6492 systems which do not have alloca the version in libiberty
6493 calls xmalloc, which might cause the program to crash
6494 when it runs out of memory. This function doesn't have a
6495 return status, so there's no way to gracefully return an
6496 error. So cheat. We know that string[-1] can be safely
6497 accessed; It's either a string in an ELF string table,
6498 or allocated in an objalloc structure. */
6500 p = eh->elf.root.root.string - 1;
6503 htab = ppc_hash_table (info);
6507 fh = (struct ppc_link_hash_entry *)
6508 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6511 /* Unfortunately, if it so happens that the string we were
6512 looking for was allocated immediately before this string,
6513 then we overwrote the string terminator. That's the only
6514 reason the lookup should fail. */
6517 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6518 while (q >= eh->elf.root.root.string && *q == *p)
6520 if (q < eh->elf.root.root.string && *p == '.')
6521 fh = (struct ppc_link_hash_entry *)
6522 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
6531 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6536 get_sym_h (struct elf_link_hash_entry **hp,
6537 Elf_Internal_Sym **symp,
6540 Elf_Internal_Sym **locsymsp,
6541 unsigned long r_symndx,
6544 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
6546 if (r_symndx >= symtab_hdr->sh_info)
6548 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6549 struct elf_link_hash_entry *h;
6551 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6552 h = elf_follow_link (h);
6560 if (symsecp != NULL)
6562 asection *symsec = NULL;
6563 if (h->root.type == bfd_link_hash_defined
6564 || h->root.type == bfd_link_hash_defweak)
6565 symsec = h->root.u.def.section;
6569 if (tls_maskp != NULL)
6571 struct ppc_link_hash_entry *eh;
6573 eh = (struct ppc_link_hash_entry *) h;
6574 *tls_maskp = &eh->tls_mask;
6579 Elf_Internal_Sym *sym;
6580 Elf_Internal_Sym *locsyms = *locsymsp;
6582 if (locsyms == NULL)
6584 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6585 if (locsyms == NULL)
6586 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6587 symtab_hdr->sh_info,
6588 0, NULL, NULL, NULL);
6589 if (locsyms == NULL)
6591 *locsymsp = locsyms;
6593 sym = locsyms + r_symndx;
6601 if (symsecp != NULL)
6602 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6604 if (tls_maskp != NULL)
6606 struct got_entry **lgot_ents;
6610 lgot_ents = elf_local_got_ents (ibfd);
6611 if (lgot_ents != NULL)
6613 struct plt_entry **local_plt = (struct plt_entry **)
6614 (lgot_ents + symtab_hdr->sh_info);
6615 char *lgot_masks = (char *)
6616 (local_plt + symtab_hdr->sh_info);
6617 tls_mask = &lgot_masks[r_symndx];
6619 *tls_maskp = tls_mask;
6625 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6626 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6627 type suitable for optimization, and 1 otherwise. */
6630 get_tls_mask (char **tls_maskp,
6631 unsigned long *toc_symndx,
6632 bfd_vma *toc_addend,
6633 Elf_Internal_Sym **locsymsp,
6634 const Elf_Internal_Rela *rel,
6637 unsigned long r_symndx;
6639 struct elf_link_hash_entry *h;
6640 Elf_Internal_Sym *sym;
6644 r_symndx = ELF64_R_SYM (rel->r_info);
6645 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6648 if ((*tls_maskp != NULL && **tls_maskp != 0)
6650 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
6653 /* Look inside a TOC section too. */
6656 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6657 off = h->root.u.def.value;
6660 off = sym->st_value;
6661 off += rel->r_addend;
6662 BFD_ASSERT (off % 8 == 0);
6663 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6664 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
6665 if (toc_symndx != NULL)
6666 *toc_symndx = r_symndx;
6667 if (toc_addend != NULL)
6668 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6669 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6672 || ((h->root.type == bfd_link_hash_defined
6673 || h->root.type == bfd_link_hash_defweak)
6674 && !h->def_dynamic))
6675 && (next_r == -1 || next_r == -2))
6680 /* Adjust all global syms defined in opd sections. In gcc generated
6681 code for the old ABI, these will already have been done. */
6684 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6686 struct ppc_link_hash_entry *eh;
6688 struct _opd_sec_data *opd;
6690 if (h->root.type == bfd_link_hash_indirect)
6693 if (h->root.type == bfd_link_hash_warning)
6694 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6696 if (h->root.type != bfd_link_hash_defined
6697 && h->root.type != bfd_link_hash_defweak)
6700 eh = (struct ppc_link_hash_entry *) h;
6701 if (eh->adjust_done)
6704 sym_sec = eh->elf.root.u.def.section;
6705 opd = get_opd_info (sym_sec);
6706 if (opd != NULL && opd->adjust != NULL)
6708 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
6711 /* This entry has been deleted. */
6712 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
6715 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6716 if (elf_discarded_section (dsec))
6718 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
6722 eh->elf.root.u.def.value = 0;
6723 eh->elf.root.u.def.section = dsec;
6726 eh->elf.root.u.def.value += adjust;
6727 eh->adjust_done = 1;
6732 /* Handles decrementing dynamic reloc counts for the reloc specified by
6733 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6734 have already been determined. */
6737 dec_dynrel_count (bfd_vma r_info,
6739 struct bfd_link_info *info,
6740 Elf_Internal_Sym **local_syms,
6741 struct elf_link_hash_entry *h,
6744 enum elf_ppc64_reloc_type r_type;
6745 struct ppc_dyn_relocs *p;
6746 struct ppc_dyn_relocs **pp;
6748 /* Can this reloc be dynamic? This switch, and later tests here
6749 should be kept in sync with the code in check_relocs. */
6750 r_type = ELF64_R_TYPE (r_info);
6756 case R_PPC64_TPREL16:
6757 case R_PPC64_TPREL16_LO:
6758 case R_PPC64_TPREL16_HI:
6759 case R_PPC64_TPREL16_HA:
6760 case R_PPC64_TPREL16_DS:
6761 case R_PPC64_TPREL16_LO_DS:
6762 case R_PPC64_TPREL16_HIGHER:
6763 case R_PPC64_TPREL16_HIGHERA:
6764 case R_PPC64_TPREL16_HIGHEST:
6765 case R_PPC64_TPREL16_HIGHESTA:
6769 case R_PPC64_TPREL64:
6770 case R_PPC64_DTPMOD64:
6771 case R_PPC64_DTPREL64:
6772 case R_PPC64_ADDR64:
6776 case R_PPC64_ADDR14:
6777 case R_PPC64_ADDR14_BRNTAKEN:
6778 case R_PPC64_ADDR14_BRTAKEN:
6779 case R_PPC64_ADDR16:
6780 case R_PPC64_ADDR16_DS:
6781 case R_PPC64_ADDR16_HA:
6782 case R_PPC64_ADDR16_HI:
6783 case R_PPC64_ADDR16_HIGHER:
6784 case R_PPC64_ADDR16_HIGHERA:
6785 case R_PPC64_ADDR16_HIGHEST:
6786 case R_PPC64_ADDR16_HIGHESTA:
6787 case R_PPC64_ADDR16_LO:
6788 case R_PPC64_ADDR16_LO_DS:
6789 case R_PPC64_ADDR24:
6790 case R_PPC64_ADDR32:
6791 case R_PPC64_UADDR16:
6792 case R_PPC64_UADDR32:
6793 case R_PPC64_UADDR64:
6798 if (local_syms != NULL)
6800 unsigned long r_symndx;
6801 Elf_Internal_Sym *sym;
6802 bfd *ibfd = sec->owner;
6804 r_symndx = ELF64_R_SYM (r_info);
6805 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6810 && (must_be_dyn_reloc (info, r_type)
6813 || h->root.type == bfd_link_hash_defweak
6814 || !h->def_regular))))
6815 || (ELIMINATE_COPY_RELOCS
6818 && (h->root.type == bfd_link_hash_defweak
6819 || !h->def_regular)))
6825 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6828 if (sym_sec != NULL)
6830 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6831 pp = (struct ppc_dyn_relocs **) vpp;
6835 void *vpp = &elf_section_data (sec)->local_dynrel;
6836 pp = (struct ppc_dyn_relocs **) vpp;
6839 /* elf_gc_sweep may have already removed all dyn relocs associated
6840 with local syms for a given section. Don't report a dynreloc
6846 while ((p = *pp) != NULL)
6850 if (!must_be_dyn_reloc (info, r_type))
6860 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6862 bfd_set_error (bfd_error_bad_value);
6866 /* Remove unused Official Procedure Descriptor entries. Currently we
6867 only remove those associated with functions in discarded link-once
6868 sections, or weakly defined functions that have been overridden. It
6869 would be possible to remove many more entries for statically linked
6873 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6874 bfd_boolean non_overlapping)
6877 bfd_boolean some_edited = FALSE;
6878 asection *need_pad = NULL;
6880 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6883 Elf_Internal_Rela *relstart, *rel, *relend;
6884 Elf_Internal_Shdr *symtab_hdr;
6885 Elf_Internal_Sym *local_syms;
6886 struct elf_link_hash_entry **sym_hashes;
6888 struct _opd_sec_data *opd;
6889 bfd_boolean need_edit, add_aux_fields;
6890 bfd_size_type cnt_16b = 0;
6892 sec = bfd_get_section_by_name (ibfd, ".opd");
6893 if (sec == NULL || sec->size == 0)
6896 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6899 if (sec->output_section == bfd_abs_section_ptr)
6902 /* Look through the section relocs. */
6903 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6907 symtab_hdr = &elf_symtab_hdr (ibfd);
6908 sym_hashes = elf_sym_hashes (ibfd);
6910 /* Read the relocations. */
6911 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6913 if (relstart == NULL)
6916 /* First run through the relocs to check they are sane, and to
6917 determine whether we need to edit this opd section. */
6921 relend = relstart + sec->reloc_count;
6922 for (rel = relstart; rel < relend; )
6924 enum elf_ppc64_reloc_type r_type;
6925 unsigned long r_symndx;
6927 struct elf_link_hash_entry *h;
6928 Elf_Internal_Sym *sym;
6930 /* .opd contains a regular array of 16 or 24 byte entries. We're
6931 only interested in the reloc pointing to a function entry
6933 if (rel->r_offset != offset
6934 || rel + 1 >= relend
6935 || (rel + 1)->r_offset != offset + 8)
6937 /* If someone messes with .opd alignment then after a
6938 "ld -r" we might have padding in the middle of .opd.
6939 Also, there's nothing to prevent someone putting
6940 something silly in .opd with the assembler. No .opd
6941 optimization for them! */
6943 (*_bfd_error_handler)
6944 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6949 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6950 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6952 (*_bfd_error_handler)
6953 (_("%B: unexpected reloc type %u in .opd section"),
6959 r_symndx = ELF64_R_SYM (rel->r_info);
6960 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6964 if (sym_sec == NULL || sym_sec->owner == NULL)
6966 const char *sym_name;
6968 sym_name = h->root.root.string;
6970 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6973 (*_bfd_error_handler)
6974 (_("%B: undefined sym `%s' in .opd section"),
6980 /* opd entries are always for functions defined in the
6981 current input bfd. If the symbol isn't defined in the
6982 input bfd, then we won't be using the function in this
6983 bfd; It must be defined in a linkonce section in another
6984 bfd, or is weak. It's also possible that we are
6985 discarding the function due to a linker script /DISCARD/,
6986 which we test for via the output_section. */
6987 if (sym_sec->owner != ibfd
6988 || sym_sec->output_section == bfd_abs_section_ptr)
6993 || (rel + 1 == relend && rel->r_offset == offset + 16))
6995 if (sec->size == offset + 24)
7000 if (rel == relend && sec->size == offset + 16)
7008 if (rel->r_offset == offset + 24)
7010 else if (rel->r_offset != offset + 16)
7012 else if (rel + 1 < relend
7013 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7014 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7019 else if (rel + 2 < relend
7020 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7021 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7030 add_aux_fields = non_overlapping && cnt_16b > 0;
7032 if (need_edit || add_aux_fields)
7034 Elf_Internal_Rela *write_rel;
7035 bfd_byte *rptr, *wptr;
7036 bfd_byte *new_contents;
7041 new_contents = NULL;
7042 amt = sec->size * sizeof (long) / 8;
7043 opd = &ppc64_elf_section_data (sec)->u.opd;
7044 opd->adjust = bfd_zalloc (obfd, amt);
7045 if (opd->adjust == NULL)
7047 ppc64_elf_section_data (sec)->sec_type = sec_opd;
7049 /* This seems a waste of time as input .opd sections are all
7050 zeros as generated by gcc, but I suppose there's no reason
7051 this will always be so. We might start putting something in
7052 the third word of .opd entries. */
7053 if ((sec->flags & SEC_IN_MEMORY) == 0)
7056 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
7061 if (local_syms != NULL
7062 && symtab_hdr->contents != (unsigned char *) local_syms)
7064 if (elf_section_data (sec)->relocs != relstart)
7068 sec->contents = loc;
7069 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7072 elf_section_data (sec)->relocs = relstart;
7074 new_contents = sec->contents;
7077 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7078 if (new_contents == NULL)
7082 wptr = new_contents;
7083 rptr = sec->contents;
7085 write_rel = relstart;
7089 for (rel = relstart; rel < relend; rel++)
7091 unsigned long r_symndx;
7093 struct elf_link_hash_entry *h;
7094 Elf_Internal_Sym *sym;
7096 r_symndx = ELF64_R_SYM (rel->r_info);
7097 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7101 if (rel->r_offset == offset)
7103 struct ppc_link_hash_entry *fdh = NULL;
7105 /* See if the .opd entry is full 24 byte or
7106 16 byte (with fd_aux entry overlapped with next
7109 if ((rel + 2 == relend && sec->size == offset + 16)
7110 || (rel + 3 < relend
7111 && rel[2].r_offset == offset + 16
7112 && rel[3].r_offset == offset + 24
7113 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7114 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7118 && h->root.root.string[0] == '.')
7120 struct ppc_link_hash_table *htab;
7122 htab = ppc_hash_table (info);
7124 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7127 && fdh->elf.root.type != bfd_link_hash_defined
7128 && fdh->elf.root.type != bfd_link_hash_defweak)
7132 skip = (sym_sec->owner != ibfd
7133 || sym_sec->output_section == bfd_abs_section_ptr);
7136 if (fdh != NULL && sym_sec->owner == ibfd)
7138 /* Arrange for the function descriptor sym
7140 fdh->elf.root.u.def.value = 0;
7141 fdh->elf.root.u.def.section = sym_sec;
7143 opd->adjust[rel->r_offset / 8] = -1;
7147 /* We'll be keeping this opd entry. */
7151 /* Redefine the function descriptor symbol to
7152 this location in the opd section. It is
7153 necessary to update the value here rather
7154 than using an array of adjustments as we do
7155 for local symbols, because various places
7156 in the generic ELF code use the value
7157 stored in u.def.value. */
7158 fdh->elf.root.u.def.value = wptr - new_contents;
7159 fdh->adjust_done = 1;
7162 /* Local syms are a bit tricky. We could
7163 tweak them as they can be cached, but
7164 we'd need to look through the local syms
7165 for the function descriptor sym which we
7166 don't have at the moment. So keep an
7167 array of adjustments. */
7168 opd->adjust[rel->r_offset / 8]
7169 = (wptr - new_contents) - (rptr - sec->contents);
7172 memcpy (wptr, rptr, opd_ent_size);
7173 wptr += opd_ent_size;
7174 if (add_aux_fields && opd_ent_size == 16)
7176 memset (wptr, '\0', 8);
7180 rptr += opd_ent_size;
7181 offset += opd_ent_size;
7187 && !info->relocatable
7188 && !dec_dynrel_count (rel->r_info, sec, info,
7194 /* We need to adjust any reloc offsets to point to the
7195 new opd entries. While we're at it, we may as well
7196 remove redundant relocs. */
7197 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
7198 if (write_rel != rel)
7199 memcpy (write_rel, rel, sizeof (*rel));
7204 sec->size = wptr - new_contents;
7205 sec->reloc_count = write_rel - relstart;
7208 free (sec->contents);
7209 sec->contents = new_contents;
7212 /* Fudge the header size too, as this is used later in
7213 elf_bfd_final_link if we are emitting relocs. */
7214 elf_section_data (sec)->rel_hdr.sh_size
7215 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
7216 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
7219 else if (elf_section_data (sec)->relocs != relstart)
7222 if (local_syms != NULL
7223 && symtab_hdr->contents != (unsigned char *) local_syms)
7225 if (!info->keep_memory)
7228 symtab_hdr->contents = (unsigned char *) local_syms;
7233 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7235 /* If we are doing a final link and the last .opd entry is just 16 byte
7236 long, add a 8 byte padding after it. */
7237 if (need_pad != NULL && !info->relocatable)
7241 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7243 BFD_ASSERT (need_pad->size > 0);
7245 p = bfd_malloc (need_pad->size + 8);
7249 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7250 p, 0, need_pad->size))
7253 need_pad->contents = p;
7254 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7258 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7262 need_pad->contents = p;
7265 memset (need_pad->contents + need_pad->size, 0, 8);
7266 need_pad->size += 8;
7272 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7275 ppc64_elf_tls_setup (bfd *obfd,
7276 struct bfd_link_info *info,
7277 int no_tls_get_addr_opt)
7279 struct ppc_link_hash_table *htab;
7281 htab = ppc_hash_table (info);
7285 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7286 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7287 FALSE, FALSE, TRUE));
7288 /* Move dynamic linking info to the function descriptor sym. */
7289 if (htab->tls_get_addr != NULL)
7290 func_desc_adjust (&htab->tls_get_addr->elf, info);
7291 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7292 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7293 FALSE, FALSE, TRUE));
7294 if (!no_tls_get_addr_opt)
7296 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7298 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7299 FALSE, FALSE, TRUE);
7301 func_desc_adjust (opt, info);
7302 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7303 FALSE, FALSE, TRUE);
7305 && (opt_fd->root.type == bfd_link_hash_defined
7306 || opt_fd->root.type == bfd_link_hash_defweak))
7308 /* If glibc supports an optimized __tls_get_addr call stub,
7309 signalled by the presence of __tls_get_addr_opt, and we'll
7310 be calling __tls_get_addr via a plt call stub, then
7311 make __tls_get_addr point to __tls_get_addr_opt. */
7312 tga_fd = &htab->tls_get_addr_fd->elf;
7313 if (htab->elf.dynamic_sections_created
7315 && (tga_fd->type == STT_FUNC
7316 || tga_fd->needs_plt)
7317 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7318 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7319 && tga_fd->root.type == bfd_link_hash_undefweak)))
7321 struct plt_entry *ent;
7323 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7324 if (ent->plt.refcount > 0)
7328 tga_fd->root.type = bfd_link_hash_indirect;
7329 tga_fd->root.u.i.link = &opt_fd->root;
7330 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7331 if (opt_fd->dynindx != -1)
7333 /* Use __tls_get_addr_opt in dynamic relocations. */
7334 opt_fd->dynindx = -1;
7335 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7336 opt_fd->dynstr_index);
7337 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
7340 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7341 tga = &htab->tls_get_addr->elf;
7342 if (opt != NULL && tga != NULL)
7344 tga->root.type = bfd_link_hash_indirect;
7345 tga->root.u.i.link = &opt->root;
7346 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7347 _bfd_elf_link_hash_hide_symbol (info, opt,
7349 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7351 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7352 htab->tls_get_addr_fd->is_func_descriptor = 1;
7353 if (htab->tls_get_addr != NULL)
7355 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7356 htab->tls_get_addr->is_func = 1;
7362 no_tls_get_addr_opt = TRUE;
7364 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
7365 return _bfd_elf_tls_setup (obfd, info);
7368 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7372 branch_reloc_hash_match (const bfd *ibfd,
7373 const Elf_Internal_Rela *rel,
7374 const struct ppc_link_hash_entry *hash1,
7375 const struct ppc_link_hash_entry *hash2)
7377 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7378 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7379 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7381 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
7383 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7384 struct elf_link_hash_entry *h;
7386 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7387 h = elf_follow_link (h);
7388 if (h == &hash1->elf || h == &hash2->elf)
7394 /* Run through all the TLS relocs looking for optimization
7395 opportunities. The linker has been hacked (see ppc64elf.em) to do
7396 a preliminary section layout so that we know the TLS segment
7397 offsets. We can't optimize earlier because some optimizations need
7398 to know the tp offset, and we need to optimize before allocating
7399 dynamic relocations. */
7402 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7406 struct ppc_link_hash_table *htab;
7409 if (info->relocatable || !info->executable)
7412 htab = ppc_hash_table (info);
7416 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7418 Elf_Internal_Sym *locsyms = NULL;
7419 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7420 unsigned char *toc_ref = NULL;
7422 /* Look at all the sections for this file. Make two passes over
7423 the relocs. On the first pass, mark toc entries involved
7424 with tls relocs, and check that tls relocs involved in
7425 setting up a tls_get_addr call are indeed followed by such a
7426 call. If they are not, exclude them from the optimizations
7427 done on the second pass. */
7428 for (pass = 0; pass < 2; ++pass)
7429 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7430 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7432 Elf_Internal_Rela *relstart, *rel, *relend;
7434 /* Read the relocations. */
7435 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7437 if (relstart == NULL)
7440 relend = relstart + sec->reloc_count;
7441 for (rel = relstart; rel < relend; rel++)
7443 enum elf_ppc64_reloc_type r_type;
7444 unsigned long r_symndx;
7445 struct elf_link_hash_entry *h;
7446 Elf_Internal_Sym *sym;
7449 char tls_set, tls_clear, tls_type = 0;
7451 bfd_boolean ok_tprel, is_local;
7452 long toc_ref_index = 0;
7453 int expecting_tls_get_addr = 0;
7455 r_symndx = ELF64_R_SYM (rel->r_info);
7456 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7460 if (elf_section_data (sec)->relocs != relstart)
7462 if (toc_ref != NULL)
7465 && (elf_symtab_hdr (ibfd).contents
7466 != (unsigned char *) locsyms))
7473 if (h->root.type == bfd_link_hash_defined
7474 || h->root.type == bfd_link_hash_defweak)
7475 value = h->root.u.def.value;
7476 else if (h->root.type == bfd_link_hash_undefweak)
7482 /* Symbols referenced by TLS relocs must be of type
7483 STT_TLS. So no need for .opd local sym adjust. */
7484 value = sym->st_value;
7493 && h->root.type == bfd_link_hash_undefweak)
7497 value += sym_sec->output_offset;
7498 value += sym_sec->output_section->vma;
7499 value -= htab->elf.tls_sec->vma;
7500 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7501 < (bfd_vma) 1 << 32);
7505 r_type = ELF64_R_TYPE (rel->r_info);
7508 case R_PPC64_GOT_TLSLD16:
7509 case R_PPC64_GOT_TLSLD16_LO:
7510 expecting_tls_get_addr = 1;
7513 case R_PPC64_GOT_TLSLD16_HI:
7514 case R_PPC64_GOT_TLSLD16_HA:
7515 /* These relocs should never be against a symbol
7516 defined in a shared lib. Leave them alone if
7517 that turns out to be the case. */
7524 tls_type = TLS_TLS | TLS_LD;
7527 case R_PPC64_GOT_TLSGD16:
7528 case R_PPC64_GOT_TLSGD16_LO:
7529 expecting_tls_get_addr = 1;
7532 case R_PPC64_GOT_TLSGD16_HI:
7533 case R_PPC64_GOT_TLSGD16_HA:
7539 tls_set = TLS_TLS | TLS_TPRELGD;
7541 tls_type = TLS_TLS | TLS_GD;
7544 case R_PPC64_GOT_TPREL16_DS:
7545 case R_PPC64_GOT_TPREL16_LO_DS:
7546 case R_PPC64_GOT_TPREL16_HI:
7547 case R_PPC64_GOT_TPREL16_HA:
7552 tls_clear = TLS_TPREL;
7553 tls_type = TLS_TLS | TLS_TPREL;
7559 case R_PPC64_TOC16_LO:
7563 if (sym_sec == NULL || sym_sec != toc)
7566 /* Mark this toc entry as referenced by a TLS
7567 code sequence. We can do that now in the
7568 case of R_PPC64_TLS, and after checking for
7569 tls_get_addr for the TOC16 relocs. */
7570 if (toc_ref == NULL)
7572 toc_ref = bfd_zmalloc (toc->size / 8);
7573 if (toc_ref == NULL)
7577 value = h->root.u.def.value;
7579 value = sym->st_value;
7580 value += rel->r_addend;
7581 BFD_ASSERT (value < toc->size && value % 8 == 0);
7582 toc_ref_index = value / 8;
7583 if (r_type == R_PPC64_TLS
7584 || r_type == R_PPC64_TLSGD
7585 || r_type == R_PPC64_TLSLD)
7587 toc_ref[toc_ref_index] = 1;
7591 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7596 expecting_tls_get_addr = 2;
7599 case R_PPC64_TPREL64:
7603 || !toc_ref[rel->r_offset / 8])
7608 tls_set = TLS_EXPLICIT;
7609 tls_clear = TLS_TPREL;
7614 case R_PPC64_DTPMOD64:
7618 || !toc_ref[rel->r_offset / 8])
7620 if (rel + 1 < relend
7622 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7623 && rel[1].r_offset == rel->r_offset + 8)
7627 tls_set = TLS_EXPLICIT | TLS_GD;
7630 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7639 tls_set = TLS_EXPLICIT;
7650 if (!expecting_tls_get_addr
7651 || !sec->has_tls_get_addr_call)
7654 if (rel + 1 < relend
7655 && branch_reloc_hash_match (ibfd, rel + 1,
7657 htab->tls_get_addr_fd))
7659 if (expecting_tls_get_addr == 2)
7661 /* Check for toc tls entries. */
7665 retval = get_tls_mask (&toc_tls, NULL, NULL,
7670 if (retval > 1 && toc_tls != NULL)
7671 toc_ref[toc_ref_index] = 1;
7676 if (expecting_tls_get_addr != 1)
7679 /* Uh oh, we didn't find the expected call. We
7680 could just mark this symbol to exclude it
7681 from tls optimization but it's safer to skip
7682 the entire section. */
7683 sec->has_tls_reloc = 0;
7687 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
7689 struct plt_entry *ent;
7690 for (ent = htab->tls_get_addr->elf.plt.plist;
7693 if (ent->addend == 0)
7695 if (ent->plt.refcount > 0)
7697 ent->plt.refcount -= 1;
7698 expecting_tls_get_addr = 0;
7704 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
7706 struct plt_entry *ent;
7707 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7710 if (ent->addend == 0)
7712 if (ent->plt.refcount > 0)
7713 ent->plt.refcount -= 1;
7721 if ((tls_set & TLS_EXPLICIT) == 0)
7723 struct got_entry *ent;
7725 /* Adjust got entry for this reloc. */
7729 ent = elf_local_got_ents (ibfd)[r_symndx];
7731 for (; ent != NULL; ent = ent->next)
7732 if (ent->addend == rel->r_addend
7733 && ent->owner == ibfd
7734 && ent->tls_type == tls_type)
7741 /* We managed to get rid of a got entry. */
7742 if (ent->got.refcount > 0)
7743 ent->got.refcount -= 1;
7748 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7749 we'll lose one or two dyn relocs. */
7750 if (!dec_dynrel_count (rel->r_info, sec, info,
7754 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7756 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7762 *tls_mask |= tls_set;
7763 *tls_mask &= ~tls_clear;
7766 if (elf_section_data (sec)->relocs != relstart)
7770 if (toc_ref != NULL)
7774 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
7776 if (!info->keep_memory)
7779 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
7785 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7786 the values of any global symbols in a toc section that has been
7787 edited. Globals in toc sections should be a rarity, so this function
7788 sets a flag if any are found in toc sections other than the one just
7789 edited, so that futher hash table traversals can be avoided. */
7791 struct adjust_toc_info
7794 unsigned long *skip;
7795 bfd_boolean global_toc_syms;
7799 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7801 struct ppc_link_hash_entry *eh;
7802 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7804 if (h->root.type == bfd_link_hash_indirect)
7807 if (h->root.type == bfd_link_hash_warning)
7808 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7810 if (h->root.type != bfd_link_hash_defined
7811 && h->root.type != bfd_link_hash_defweak)
7814 eh = (struct ppc_link_hash_entry *) h;
7815 if (eh->adjust_done)
7818 if (eh->elf.root.u.def.section == toc_inf->toc)
7820 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7821 if (skip != (unsigned long) -1)
7822 eh->elf.root.u.def.value -= skip;
7825 (*_bfd_error_handler)
7826 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7827 eh->elf.root.u.def.section = &bfd_abs_section;
7828 eh->elf.root.u.def.value = 0;
7830 eh->adjust_done = 1;
7832 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7833 toc_inf->global_toc_syms = TRUE;
7838 /* Examine all relocs referencing .toc sections in order to remove
7839 unused .toc entries. */
7842 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7845 struct adjust_toc_info toc_inf;
7847 toc_inf.global_toc_syms = TRUE;
7848 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7850 asection *toc, *sec;
7851 Elf_Internal_Shdr *symtab_hdr;
7852 Elf_Internal_Sym *local_syms;
7853 struct elf_link_hash_entry **sym_hashes;
7854 Elf_Internal_Rela *relstart, *rel;
7855 unsigned long *skip, *drop;
7856 unsigned char *used;
7857 unsigned char *keep, last, some_unused;
7859 toc = bfd_get_section_by_name (ibfd, ".toc");
7862 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7863 || elf_discarded_section (toc))
7867 symtab_hdr = &elf_symtab_hdr (ibfd);
7868 sym_hashes = elf_sym_hashes (ibfd);
7870 /* Look at sections dropped from the final link. */
7873 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7875 if (sec->reloc_count == 0
7876 || !elf_discarded_section (sec)
7877 || get_opd_info (sec)
7878 || (sec->flags & SEC_ALLOC) == 0
7879 || (sec->flags & SEC_DEBUGGING) != 0)
7882 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7883 if (relstart == NULL)
7886 /* Run through the relocs to see which toc entries might be
7888 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7890 enum elf_ppc64_reloc_type r_type;
7891 unsigned long r_symndx;
7893 struct elf_link_hash_entry *h;
7894 Elf_Internal_Sym *sym;
7897 r_type = ELF64_R_TYPE (rel->r_info);
7904 case R_PPC64_TOC16_LO:
7905 case R_PPC64_TOC16_HI:
7906 case R_PPC64_TOC16_HA:
7907 case R_PPC64_TOC16_DS:
7908 case R_PPC64_TOC16_LO_DS:
7912 r_symndx = ELF64_R_SYM (rel->r_info);
7913 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7921 val = h->root.u.def.value;
7923 val = sym->st_value;
7924 val += rel->r_addend;
7926 if (val >= toc->size)
7929 /* Anything in the toc ought to be aligned to 8 bytes.
7930 If not, don't mark as unused. */
7936 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7944 if (elf_section_data (sec)->relocs != relstart)
7951 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7955 if (local_syms != NULL
7956 && symtab_hdr->contents != (unsigned char *) local_syms)
7960 && elf_section_data (sec)->relocs != relstart)
7967 /* Now check all kept sections that might reference the toc.
7968 Check the toc itself last. */
7969 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7972 sec = (sec == toc ? NULL
7973 : sec->next == NULL ? toc
7974 : sec->next == toc && toc->next ? toc->next
7979 if (sec->reloc_count == 0
7980 || elf_discarded_section (sec)
7981 || get_opd_info (sec)
7982 || (sec->flags & SEC_ALLOC) == 0
7983 || (sec->flags & SEC_DEBUGGING) != 0)
7986 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7987 if (relstart == NULL)
7990 /* Mark toc entries referenced as used. */
7993 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7995 enum elf_ppc64_reloc_type r_type;
7996 unsigned long r_symndx;
7998 struct elf_link_hash_entry *h;
7999 Elf_Internal_Sym *sym;
8002 r_type = ELF64_R_TYPE (rel->r_info);
8006 case R_PPC64_TOC16_LO:
8007 case R_PPC64_TOC16_HI:
8008 case R_PPC64_TOC16_HA:
8009 case R_PPC64_TOC16_DS:
8010 case R_PPC64_TOC16_LO_DS:
8011 /* In case we're taking addresses of toc entries. */
8012 case R_PPC64_ADDR64:
8019 r_symndx = ELF64_R_SYM (rel->r_info);
8020 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8031 val = h->root.u.def.value;
8033 val = sym->st_value;
8034 val += rel->r_addend;
8036 if (val >= toc->size)
8039 /* For the toc section, we only mark as used if
8040 this entry itself isn't unused. */
8043 && (used[rel->r_offset >> 3]
8044 || !skip[rel->r_offset >> 3]))
8045 /* Do all the relocs again, to catch reference
8054 /* Merge the used and skip arrays. Assume that TOC
8055 doublewords not appearing as either used or unused belong
8056 to to an entry more than one doubleword in size. */
8057 for (drop = skip, keep = used, last = 0, some_unused = 0;
8058 drop < skip + (toc->size + 7) / 8;
8079 bfd_byte *contents, *src;
8082 /* Shuffle the toc contents, and at the same time convert the
8083 skip array from booleans into offsets. */
8084 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8087 elf_section_data (toc)->this_hdr.contents = contents;
8089 for (src = contents, off = 0, drop = skip;
8090 src < contents + toc->size;
8095 *drop = (unsigned long) -1;
8101 memcpy (src - off, src, 8);
8104 toc->rawsize = toc->size;
8105 toc->size = src - contents - off;
8107 if (toc->reloc_count != 0)
8109 Elf_Internal_Rela *wrel;
8112 /* Read toc relocs. */
8113 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8115 if (relstart == NULL)
8118 /* Remove unused toc relocs, and adjust those we keep. */
8120 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
8121 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
8123 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8124 wrel->r_info = rel->r_info;
8125 wrel->r_addend = rel->r_addend;
8128 else if (!dec_dynrel_count (rel->r_info, toc, info,
8129 &local_syms, NULL, NULL))
8132 toc->reloc_count = wrel - relstart;
8133 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
8134 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
8135 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
8138 /* Adjust addends for relocs against the toc section sym. */
8139 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8141 if (sec->reloc_count == 0
8142 || elf_discarded_section (sec))
8145 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8147 if (relstart == NULL)
8150 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8152 enum elf_ppc64_reloc_type r_type;
8153 unsigned long r_symndx;
8155 struct elf_link_hash_entry *h;
8156 Elf_Internal_Sym *sym;
8158 r_type = ELF64_R_TYPE (rel->r_info);
8165 case R_PPC64_TOC16_LO:
8166 case R_PPC64_TOC16_HI:
8167 case R_PPC64_TOC16_HA:
8168 case R_PPC64_TOC16_DS:
8169 case R_PPC64_TOC16_LO_DS:
8170 case R_PPC64_ADDR64:
8174 r_symndx = ELF64_R_SYM (rel->r_info);
8175 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8179 if (sym_sec != toc || h != NULL || sym->st_value != 0)
8182 rel->r_addend -= skip[rel->r_addend >> 3];
8186 /* We shouldn't have local or global symbols defined in the TOC,
8187 but handle them anyway. */
8188 if (local_syms != NULL)
8190 Elf_Internal_Sym *sym;
8192 for (sym = local_syms;
8193 sym < local_syms + symtab_hdr->sh_info;
8195 if (sym->st_value != 0
8196 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8198 if (skip[sym->st_value >> 3] != (unsigned long) -1)
8199 sym->st_value -= skip[sym->st_value >> 3];
8202 (*_bfd_error_handler)
8203 (_("%s defined in removed toc entry"),
8204 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
8207 sym->st_shndx = SHN_ABS;
8209 symtab_hdr->contents = (unsigned char *) local_syms;
8213 /* Finally, adjust any global syms defined in the toc. */
8214 if (toc_inf.global_toc_syms)
8217 toc_inf.skip = skip;
8218 toc_inf.global_toc_syms = FALSE;
8219 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8224 if (local_syms != NULL
8225 && symtab_hdr->contents != (unsigned char *) local_syms)
8227 if (!info->keep_memory)
8230 symtab_hdr->contents = (unsigned char *) local_syms;
8238 /* Allocate space for one GOT entry. */
8241 allocate_got (struct elf_link_hash_entry *h,
8242 struct bfd_link_info *info,
8243 struct got_entry *gent)
8245 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8247 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8248 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8250 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8251 ? 2 : 1) * sizeof (Elf64_External_Rela);
8252 asection *got = ppc64_elf_tdata (gent->owner)->got;
8254 gent->got.offset = got->size;
8255 got->size += entsize;
8257 dyn = htab->elf.dynamic_sections_created;
8259 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8260 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8261 || h->root.type != bfd_link_hash_undefweak))
8263 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8264 relgot->size += rentsize;
8266 else if (h->type == STT_GNU_IFUNC)
8268 asection *relgot = htab->reliplt;
8269 relgot->size += rentsize;
8270 htab->got_reli_size += rentsize;
8274 /* Allocate space in .plt, .got and associated reloc sections for
8278 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8280 struct bfd_link_info *info;
8281 struct ppc_link_hash_table *htab;
8283 struct ppc_link_hash_entry *eh;
8284 struct ppc_dyn_relocs *p;
8285 struct got_entry *gent;
8287 if (h->root.type == bfd_link_hash_indirect)
8290 if (h->root.type == bfd_link_hash_warning)
8291 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8293 info = (struct bfd_link_info *) inf;
8294 htab = ppc_hash_table (info);
8298 if ((htab->elf.dynamic_sections_created
8300 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8301 || h->type == STT_GNU_IFUNC)
8303 struct plt_entry *pent;
8304 bfd_boolean doneone = FALSE;
8305 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8306 if (pent->plt.refcount > 0)
8308 if (!htab->elf.dynamic_sections_created
8309 || h->dynindx == -1)
8312 pent->plt.offset = s->size;
8313 s->size += PLT_ENTRY_SIZE;
8318 /* If this is the first .plt entry, make room for the special
8322 s->size += PLT_INITIAL_ENTRY_SIZE;
8324 pent->plt.offset = s->size;
8326 /* Make room for this entry. */
8327 s->size += PLT_ENTRY_SIZE;
8329 /* Make room for the .glink code. */
8332 s->size += GLINK_CALL_STUB_SIZE;
8333 /* We need bigger stubs past index 32767. */
8334 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8338 /* We also need to make an entry in the .rela.plt section. */
8341 s->size += sizeof (Elf64_External_Rela);
8345 pent->plt.offset = (bfd_vma) -1;
8348 h->plt.plist = NULL;
8354 h->plt.plist = NULL;
8358 eh = (struct ppc_link_hash_entry *) h;
8359 /* Run through the TLS GD got entries first if we're changing them
8361 if ((eh->tls_mask & TLS_TPRELGD) != 0)
8362 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8363 if (gent->got.refcount > 0
8364 && (gent->tls_type & TLS_GD) != 0)
8366 /* This was a GD entry that has been converted to TPREL. If
8367 there happens to be a TPREL entry we can use that one. */
8368 struct got_entry *ent;
8369 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8370 if (ent->got.refcount > 0
8371 && (ent->tls_type & TLS_TPREL) != 0
8372 && ent->addend == gent->addend
8373 && ent->owner == gent->owner)
8375 gent->got.refcount = 0;
8379 /* If not, then we'll be using our own TPREL entry. */
8380 if (gent->got.refcount != 0)
8381 gent->tls_type = TLS_TLS | TLS_TPREL;
8384 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8385 if (gent->got.refcount > 0)
8387 /* Make sure this symbol is output as a dynamic symbol.
8388 Undefined weak syms won't yet be marked as dynamic,
8389 nor will all TLS symbols. */
8390 if (h->dynindx == -1
8392 && h->type != STT_GNU_IFUNC
8393 && htab->elf.dynamic_sections_created)
8395 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8399 if ((gent->tls_type & TLS_LD) != 0
8402 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8403 gent->got.offset = (bfd_vma) -1;
8407 if (!is_ppc64_elf (gent->owner))
8410 allocate_got (h, info, gent);
8413 gent->got.offset = (bfd_vma) -1;
8415 if (eh->dyn_relocs == NULL
8416 || (!htab->elf.dynamic_sections_created
8417 && h->type != STT_GNU_IFUNC))
8420 /* In the shared -Bsymbolic case, discard space allocated for
8421 dynamic pc-relative relocs against symbols which turn out to be
8422 defined in regular objects. For the normal shared case, discard
8423 space for relocs that have become local due to symbol visibility
8428 /* Relocs that use pc_count are those that appear on a call insn,
8429 or certain REL relocs (see must_be_dyn_reloc) that can be
8430 generated via assembly. We want calls to protected symbols to
8431 resolve directly to the function rather than going via the plt.
8432 If people want function pointer comparisons to work as expected
8433 then they should avoid writing weird assembly. */
8434 if (SYMBOL_CALLS_LOCAL (info, h))
8436 struct ppc_dyn_relocs **pp;
8438 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
8440 p->count -= p->pc_count;
8449 /* Also discard relocs on undefined weak syms with non-default
8451 if (eh->dyn_relocs != NULL
8452 && h->root.type == bfd_link_hash_undefweak)
8454 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8455 eh->dyn_relocs = NULL;
8457 /* Make sure this symbol is output as a dynamic symbol.
8458 Undefined weak syms won't yet be marked as dynamic. */
8459 else if (h->dynindx == -1
8460 && !h->forced_local)
8462 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8467 else if (h->type == STT_GNU_IFUNC)
8469 if (!h->non_got_ref)
8470 eh->dyn_relocs = NULL;
8472 else if (ELIMINATE_COPY_RELOCS)
8474 /* For the non-shared case, discard space for relocs against
8475 symbols which turn out to need copy relocs or are not
8481 /* Make sure this symbol is output as a dynamic symbol.
8482 Undefined weak syms won't yet be marked as dynamic. */
8483 if (h->dynindx == -1
8484 && !h->forced_local)
8486 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8490 /* If that succeeded, we know we'll be keeping all the
8492 if (h->dynindx != -1)
8496 eh->dyn_relocs = NULL;
8501 /* Finally, allocate space. */
8502 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8504 asection *sreloc = elf_section_data (p->sec)->sreloc;
8505 if (!htab->elf.dynamic_sections_created)
8506 sreloc = htab->reliplt;
8507 sreloc->size += p->count * sizeof (Elf64_External_Rela);
8513 /* Find any dynamic relocs that apply to read-only sections. */
8516 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
8518 struct ppc_link_hash_entry *eh;
8519 struct ppc_dyn_relocs *p;
8521 if (h->root.type == bfd_link_hash_warning)
8522 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8524 eh = (struct ppc_link_hash_entry *) h;
8525 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8527 asection *s = p->sec->output_section;
8529 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8531 struct bfd_link_info *info = inf;
8533 info->flags |= DF_TEXTREL;
8535 /* Not an error, just cut short the traversal. */
8542 /* Set the sizes of the dynamic sections. */
8545 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8546 struct bfd_link_info *info)
8548 struct ppc_link_hash_table *htab;
8554 htab = ppc_hash_table (info);
8558 dynobj = htab->elf.dynobj;
8562 if (htab->elf.dynamic_sections_created)
8564 /* Set the contents of the .interp section to the interpreter. */
8565 if (info->executable)
8567 s = bfd_get_section_by_name (dynobj, ".interp");
8570 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8571 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8575 /* Set up .got offsets for local syms, and space for local dynamic
8577 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8579 struct got_entry **lgot_ents;
8580 struct got_entry **end_lgot_ents;
8581 struct plt_entry **local_plt;
8582 struct plt_entry **end_local_plt;
8584 bfd_size_type locsymcount;
8585 Elf_Internal_Shdr *symtab_hdr;
8588 if (!is_ppc64_elf (ibfd))
8591 for (s = ibfd->sections; s != NULL; s = s->next)
8593 struct ppc_dyn_relocs *p;
8595 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
8597 if (!bfd_is_abs_section (p->sec)
8598 && bfd_is_abs_section (p->sec->output_section))
8600 /* Input section has been discarded, either because
8601 it is a copy of a linkonce section or due to
8602 linker script /DISCARD/, so we'll be discarding
8605 else if (p->count != 0)
8607 srel = elf_section_data (p->sec)->sreloc;
8608 if (!htab->elf.dynamic_sections_created)
8609 srel = htab->reliplt;
8610 srel->size += p->count * sizeof (Elf64_External_Rela);
8611 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8612 info->flags |= DF_TEXTREL;
8617 lgot_ents = elf_local_got_ents (ibfd);
8621 symtab_hdr = &elf_symtab_hdr (ibfd);
8622 locsymcount = symtab_hdr->sh_info;
8623 end_lgot_ents = lgot_ents + locsymcount;
8624 local_plt = (struct plt_entry **) end_lgot_ents;
8625 end_local_plt = local_plt + locsymcount;
8626 lgot_masks = (char *) end_local_plt;
8627 s = ppc64_elf_tdata (ibfd)->got;
8628 srel = ppc64_elf_tdata (ibfd)->relgot;
8629 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
8631 struct got_entry *ent;
8633 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
8634 if (ent->got.refcount > 0)
8636 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
8638 ppc64_tlsld_got (ibfd)->got.refcount += 1;
8639 ent->got.offset = (bfd_vma) -1;
8643 unsigned int num = 1;
8644 ent->got.offset = s->size;
8645 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
8649 srel->size += num * sizeof (Elf64_External_Rela);
8650 else if ((*lgot_masks & PLT_IFUNC) != 0)
8653 += num * sizeof (Elf64_External_Rela);
8655 += num * sizeof (Elf64_External_Rela);
8660 ent->got.offset = (bfd_vma) -1;
8663 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8664 for (; local_plt < end_local_plt; ++local_plt)
8666 struct plt_entry *ent;
8668 for (ent = *local_plt; ent != NULL; ent = ent->next)
8669 if (ent->plt.refcount > 0)
8672 ent->plt.offset = s->size;
8673 s->size += PLT_ENTRY_SIZE;
8675 htab->reliplt->size += sizeof (Elf64_External_Rela);
8678 ent->plt.offset = (bfd_vma) -1;
8682 /* Allocate global sym .plt and .got entries, and space for global
8683 sym dynamic relocs. */
8684 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
8686 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8688 if (!is_ppc64_elf (ibfd))
8691 if (ppc64_tlsld_got (ibfd)->got.refcount > 0)
8693 s = ppc64_elf_tdata (ibfd)->got;
8694 ppc64_tlsld_got (ibfd)->got.offset = s->size;
8695 ppc64_tlsld_got (ibfd)->owner = ibfd;
8699 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
8700 srel->size += sizeof (Elf64_External_Rela);
8704 ppc64_tlsld_got (ibfd)->got.offset = (bfd_vma) -1;
8707 /* We now have determined the sizes of the various dynamic sections.
8708 Allocate memory for them. */
8710 for (s = dynobj->sections; s != NULL; s = s->next)
8712 if ((s->flags & SEC_LINKER_CREATED) == 0)
8715 if (s == htab->brlt || s == htab->relbrlt)
8716 /* These haven't been allocated yet; don't strip. */
8718 else if (s == htab->got
8722 || s == htab->dynbss)
8724 /* Strip this section if we don't need it; see the
8727 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
8731 if (s != htab->relplt)
8734 /* We use the reloc_count field as a counter if we need
8735 to copy relocs into the output file. */
8741 /* It's not one of our sections, so don't allocate space. */
8747 /* If we don't need this section, strip it from the
8748 output file. This is mostly to handle .rela.bss and
8749 .rela.plt. We must create both sections in
8750 create_dynamic_sections, because they must be created
8751 before the linker maps input sections to output
8752 sections. The linker does that before
8753 adjust_dynamic_symbol is called, and it is that
8754 function which decides whether anything needs to go
8755 into these sections. */
8756 s->flags |= SEC_EXCLUDE;
8760 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8763 /* Allocate memory for the section contents. We use bfd_zalloc
8764 here in case unused entries are not reclaimed before the
8765 section's contents are written out. This should not happen,
8766 but this way if it does we get a R_PPC64_NONE reloc in .rela
8767 sections instead of garbage.
8768 We also rely on the section contents being zero when writing
8770 s->contents = bfd_zalloc (dynobj, s->size);
8771 if (s->contents == NULL)
8775 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8777 if (!is_ppc64_elf (ibfd))
8780 s = ppc64_elf_tdata (ibfd)->got;
8781 if (s != NULL && s != htab->got)
8784 s->flags |= SEC_EXCLUDE;
8787 s->contents = bfd_zalloc (ibfd, s->size);
8788 if (s->contents == NULL)
8792 s = ppc64_elf_tdata (ibfd)->relgot;
8796 s->flags |= SEC_EXCLUDE;
8799 s->contents = bfd_zalloc (ibfd, s->size);
8800 if (s->contents == NULL)
8808 if (htab->elf.dynamic_sections_created)
8810 /* Add some entries to the .dynamic section. We fill in the
8811 values later, in ppc64_elf_finish_dynamic_sections, but we
8812 must add the entries now so that we get the correct size for
8813 the .dynamic section. The DT_DEBUG entry is filled in by the
8814 dynamic linker and used by the debugger. */
8815 #define add_dynamic_entry(TAG, VAL) \
8816 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8818 if (info->executable)
8820 if (!add_dynamic_entry (DT_DEBUG, 0))
8824 if (htab->plt != NULL && htab->plt->size != 0)
8826 if (!add_dynamic_entry (DT_PLTGOT, 0)
8827 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8828 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8829 || !add_dynamic_entry (DT_JMPREL, 0)
8830 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
8836 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8837 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
8841 if (!htab->no_tls_get_addr_opt
8842 && htab->tls_get_addr_fd != NULL
8843 && htab->tls_get_addr_fd->elf.plt.plist != NULL
8844 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
8849 if (!add_dynamic_entry (DT_RELA, 0)
8850 || !add_dynamic_entry (DT_RELASZ, 0)
8851 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
8854 /* If any dynamic relocs apply to a read-only section,
8855 then we need a DT_TEXTREL entry. */
8856 if ((info->flags & DF_TEXTREL) == 0)
8857 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
8859 if ((info->flags & DF_TEXTREL) != 0)
8861 if (!add_dynamic_entry (DT_TEXTREL, 0))
8866 #undef add_dynamic_entry
8871 /* Determine the type of stub needed, if any, for a call. */
8873 static inline enum ppc_stub_type
8874 ppc_type_of_stub (asection *input_sec,
8875 const Elf_Internal_Rela *rel,
8876 struct ppc_link_hash_entry **hash,
8877 struct plt_entry **plt_ent,
8878 bfd_vma destination)
8880 struct ppc_link_hash_entry *h = *hash;
8882 bfd_vma branch_offset;
8883 bfd_vma max_branch_offset;
8884 enum elf_ppc64_reloc_type r_type;
8888 struct plt_entry *ent;
8889 struct ppc_link_hash_entry *fdh = h;
8891 && h->oh->is_func_descriptor)
8892 fdh = ppc_follow_link (h->oh);
8894 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
8895 if (ent->addend == rel->r_addend
8896 && ent->plt.offset != (bfd_vma) -1)
8900 return ppc_stub_plt_call;
8903 /* Here, we know we don't have a plt entry. If we don't have a
8904 either a defined function descriptor or a defined entry symbol
8905 in a regular object file, then it is pointless trying to make
8906 any other type of stub. */
8907 if (!((fdh->elf.root.type == bfd_link_hash_defined
8908 || fdh->elf.root.type == bfd_link_hash_defweak)
8909 && fdh->elf.root.u.def.section->output_section != NULL)
8910 && !((h->elf.root.type == bfd_link_hash_defined
8911 || h->elf.root.type == bfd_link_hash_defweak)
8912 && h->elf.root.u.def.section->output_section != NULL))
8913 return ppc_stub_none;
8915 else if (elf_local_got_ents (input_sec->owner) != NULL)
8917 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
8918 struct plt_entry **local_plt = (struct plt_entry **)
8919 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
8920 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
8922 if (local_plt[r_symndx] != NULL)
8924 struct plt_entry *ent;
8926 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
8927 if (ent->addend == rel->r_addend
8928 && ent->plt.offset != (bfd_vma) -1)
8931 return ppc_stub_plt_call;
8936 /* Determine where the call point is. */
8937 location = (input_sec->output_offset
8938 + input_sec->output_section->vma
8941 branch_offset = destination - location;
8942 r_type = ELF64_R_TYPE (rel->r_info);
8944 /* Determine if a long branch stub is needed. */
8945 max_branch_offset = 1 << 25;
8946 if (r_type != R_PPC64_REL24)
8947 max_branch_offset = 1 << 15;
8949 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8950 /* We need a stub. Figure out whether a long_branch or plt_branch
8952 return ppc_stub_long_branch;
8954 return ppc_stub_none;
8957 /* Build a .plt call stub. */
8959 static inline bfd_byte *
8960 build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
8962 #define PPC_LO(v) ((v) & 0xffff)
8963 #define PPC_HI(v) (((v) >> 16) & 0xffff)
8964 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
8966 if (PPC_HA (offset) != 0)
8970 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
8971 r[1].r_offset = r[0].r_offset + 8;
8972 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8973 r[1].r_addend = r[0].r_addend;
8974 if (PPC_HA (offset + 16) != PPC_HA (offset))
8976 r[2].r_offset = r[1].r_offset + 4;
8977 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
8978 r[2].r_addend = r[0].r_addend;
8982 r[2].r_offset = r[1].r_offset + 8;
8983 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8984 r[2].r_addend = r[0].r_addend + 8;
8985 r[3].r_offset = r[2].r_offset + 4;
8986 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8987 r[3].r_addend = r[0].r_addend + 16;
8990 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8991 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8992 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8993 if (PPC_HA (offset + 16) != PPC_HA (offset))
8995 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
8998 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8999 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9000 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
9001 bfd_put_32 (obfd, BCTR, p), p += 4;
9008 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9009 if (PPC_HA (offset + 16) != PPC_HA (offset))
9011 r[1].r_offset = r[0].r_offset + 4;
9012 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9013 r[1].r_addend = r[0].r_addend;
9017 r[1].r_offset = r[0].r_offset + 8;
9018 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9019 r[1].r_addend = r[0].r_addend + 16;
9020 r[2].r_offset = r[1].r_offset + 4;
9021 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9022 r[2].r_addend = r[0].r_addend + 8;
9025 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
9026 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9027 if (PPC_HA (offset + 16) != PPC_HA (offset))
9029 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9032 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
9033 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
9034 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
9035 bfd_put_32 (obfd, BCTR, p), p += 4;
9040 /* Build a special .plt call stub for __tls_get_addr. */
9042 #define LD_R11_0R3 0xe9630000
9043 #define LD_R12_0R3 0xe9830000
9044 #define MR_R0_R3 0x7c601b78
9045 #define CMPDI_R11_0 0x2c2b0000
9046 #define ADD_R3_R12_R13 0x7c6c6a14
9047 #define BEQLR 0x4d820020
9048 #define MR_R3_R0 0x7c030378
9049 #define MFLR_R11 0x7d6802a6
9050 #define STD_R11_0R1 0xf9610000
9051 #define BCTRL 0x4e800421
9052 #define LD_R11_0R1 0xe9610000
9053 #define LD_R2_0R1 0xe8410000
9054 #define MTLR_R11 0x7d6803a6
9056 static inline bfd_byte *
9057 build_tls_get_addr_stub (bfd *obfd, bfd_byte *p, int offset,
9058 Elf_Internal_Rela *r)
9060 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9061 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9062 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9063 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9064 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9065 bfd_put_32 (obfd, BEQLR, p), p += 4;
9066 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9067 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9068 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9071 r[0].r_offset += 9 * 4;
9072 p = build_plt_stub (obfd, p, offset, r);
9073 bfd_put_32 (obfd, BCTRL, p - 4);
9075 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9076 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9077 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9078 bfd_put_32 (obfd, BLR, p), p += 4;
9083 static Elf_Internal_Rela *
9084 get_relocs (asection *sec, int count)
9086 Elf_Internal_Rela *relocs;
9087 struct bfd_elf_section_data *elfsec_data;
9089 elfsec_data = elf_section_data (sec);
9090 relocs = elfsec_data->relocs;
9093 bfd_size_type relsize;
9094 relsize = sec->reloc_count * sizeof (*relocs);
9095 relocs = bfd_alloc (sec->owner, relsize);
9098 elfsec_data->relocs = relocs;
9099 elfsec_data->rel_hdr.sh_size = (sec->reloc_count
9100 * sizeof (Elf64_External_Rela));
9101 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
9102 sec->reloc_count = 0;
9104 relocs += sec->reloc_count;
9105 sec->reloc_count += count;
9110 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9112 struct ppc_stub_hash_entry *stub_entry;
9113 struct ppc_branch_hash_entry *br_entry;
9114 struct bfd_link_info *info;
9115 struct ppc_link_hash_table *htab;
9120 Elf_Internal_Rela *r;
9123 /* Massage our args to the form they really have. */
9124 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9127 htab = ppc_hash_table (info);
9131 /* Make a note of the offset within the stubs for this entry. */
9132 stub_entry->stub_offset = stub_entry->stub_sec->size;
9133 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
9135 htab->stub_count[stub_entry->stub_type - 1] += 1;
9136 switch (stub_entry->stub_type)
9138 case ppc_stub_long_branch:
9139 case ppc_stub_long_branch_r2off:
9140 /* Branches are relative. This is where we are going to. */
9141 off = dest = (stub_entry->target_value
9142 + stub_entry->target_section->output_offset
9143 + stub_entry->target_section->output_section->vma);
9145 /* And this is where we are coming from. */
9146 off -= (stub_entry->stub_offset
9147 + stub_entry->stub_sec->output_offset
9148 + stub_entry->stub_sec->output_section->vma);
9151 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9155 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9156 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9157 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9160 if (PPC_HA (r2off) != 0)
9163 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9166 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9170 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
9172 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9174 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
9175 stub_entry->root.string);
9176 htab->stub_error = TRUE;
9180 if (info->emitrelocations)
9182 r = get_relocs (stub_entry->stub_sec, 1);
9185 r->r_offset = loc - stub_entry->stub_sec->contents;
9186 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9188 if (stub_entry->h != NULL)
9190 struct elf_link_hash_entry **hashes;
9191 unsigned long symndx;
9192 struct ppc_link_hash_entry *h;
9194 hashes = elf_sym_hashes (htab->stub_bfd);
9197 bfd_size_type hsize;
9199 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9200 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9203 elf_sym_hashes (htab->stub_bfd) = hashes;
9204 htab->stub_globals = 1;
9206 symndx = htab->stub_globals++;
9208 hashes[symndx] = &h->elf;
9209 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9210 if (h->oh != NULL && h->oh->is_func)
9211 h = ppc_follow_link (h->oh);
9212 if (h->elf.root.u.def.section != stub_entry->target_section)
9213 /* H is an opd symbol. The addend must be zero. */
9217 off = (h->elf.root.u.def.value
9218 + h->elf.root.u.def.section->output_offset
9219 + h->elf.root.u.def.section->output_section->vma);
9226 case ppc_stub_plt_branch:
9227 case ppc_stub_plt_branch_r2off:
9228 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9229 stub_entry->root.string + 9,
9231 if (br_entry == NULL)
9233 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
9234 stub_entry->root.string);
9235 htab->stub_error = TRUE;
9239 dest = (stub_entry->target_value
9240 + stub_entry->target_section->output_offset
9241 + stub_entry->target_section->output_section->vma);
9243 bfd_put_64 (htab->brlt->owner, dest,
9244 htab->brlt->contents + br_entry->offset);
9246 if (br_entry->iter == htab->stub_iteration)
9250 if (htab->relbrlt != NULL)
9252 /* Create a reloc for the branch lookup table entry. */
9253 Elf_Internal_Rela rela;
9256 rela.r_offset = (br_entry->offset
9257 + htab->brlt->output_offset
9258 + htab->brlt->output_section->vma);
9259 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9260 rela.r_addend = dest;
9262 rl = htab->relbrlt->contents;
9263 rl += (htab->relbrlt->reloc_count++
9264 * sizeof (Elf64_External_Rela));
9265 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
9267 else if (info->emitrelocations)
9269 r = get_relocs (htab->brlt, 1);
9272 /* brlt, being SEC_LINKER_CREATED does not go through the
9273 normal reloc processing. Symbols and offsets are not
9274 translated from input file to output file form, so
9275 set up the offset per the output file. */
9276 r->r_offset = (br_entry->offset
9277 + htab->brlt->output_offset
9278 + htab->brlt->output_section->vma);
9279 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
9284 dest = (br_entry->offset
9285 + htab->brlt->output_offset
9286 + htab->brlt->output_section->vma);
9289 - elf_gp (htab->brlt->output_section->owner)
9290 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9292 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9294 (*_bfd_error_handler)
9295 (_("linkage table error against `%s'"),
9296 stub_entry->root.string);
9297 bfd_set_error (bfd_error_bad_value);
9298 htab->stub_error = TRUE;
9302 if (info->emitrelocations)
9304 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
9307 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9308 if (bfd_big_endian (info->output_bfd))
9310 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
9312 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9313 r[0].r_addend = dest;
9314 if (PPC_HA (off) != 0)
9316 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
9317 r[1].r_offset = r[0].r_offset + 4;
9318 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9319 r[1].r_addend = r[0].r_addend;
9323 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9325 if (PPC_HA (off) != 0)
9328 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9330 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9335 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9342 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9343 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9344 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
9347 if (PPC_HA (off) != 0)
9350 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
9352 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
9357 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
9361 if (PPC_HA (r2off) != 0)
9364 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9367 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
9370 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
9372 bfd_put_32 (htab->stub_bfd, BCTR, loc);
9375 case ppc_stub_plt_call:
9376 if (stub_entry->h != NULL
9377 && stub_entry->h->is_func_descriptor
9378 && stub_entry->h->oh != NULL)
9380 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
9382 /* If the old-ABI "dot-symbol" is undefined make it weak so
9383 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9384 FIXME: We used to define the symbol on one of the call
9385 stubs instead, which is why we test symbol section id
9386 against htab->top_id in various places. Likely all
9387 these checks could now disappear. */
9388 if (fh->elf.root.type == bfd_link_hash_undefined)
9389 fh->elf.root.type = bfd_link_hash_undefweak;
9392 /* Now build the stub. */
9393 dest = stub_entry->plt_ent->plt.offset & ~1;
9394 if (dest >= (bfd_vma) -2)
9398 if (!htab->elf.dynamic_sections_created
9399 || stub_entry->h == NULL
9400 || stub_entry->h->elf.dynindx == -1)
9403 dest += plt->output_offset + plt->output_section->vma;
9405 if (stub_entry->h == NULL
9406 && (stub_entry->plt_ent->plt.offset & 1) == 0)
9408 Elf_Internal_Rela rela;
9411 rela.r_offset = dest;
9412 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
9413 rela.r_addend = (stub_entry->target_value
9414 + stub_entry->target_section->output_offset
9415 + stub_entry->target_section->output_section->vma);
9417 rl = (htab->reliplt->contents
9418 + (htab->reliplt->reloc_count++
9419 * sizeof (Elf64_External_Rela)));
9420 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
9421 stub_entry->plt_ent->plt.offset |= 1;
9425 - elf_gp (plt->output_section->owner)
9426 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9428 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
9430 (*_bfd_error_handler)
9431 (_("linkage table error against `%s'"),
9432 stub_entry->h != NULL
9433 ? stub_entry->h->elf.root.root.string
9435 bfd_set_error (bfd_error_bad_value);
9436 htab->stub_error = TRUE;
9441 if (info->emitrelocations)
9443 r = get_relocs (stub_entry->stub_sec,
9444 (2 + (PPC_HA (off) != 0)
9445 + (PPC_HA (off + 16) == PPC_HA (off))));
9448 r[0].r_offset = loc - stub_entry->stub_sec->contents;
9449 if (bfd_big_endian (info->output_bfd))
9451 r[0].r_addend = dest;
9453 if (stub_entry->h != NULL
9454 && (stub_entry->h == htab->tls_get_addr_fd
9455 || stub_entry->h == htab->tls_get_addr)
9456 && !htab->no_tls_get_addr_opt)
9457 p = build_tls_get_addr_stub (htab->stub_bfd, loc, off, r);
9459 p = build_plt_stub (htab->stub_bfd, loc, off, r);
9468 stub_entry->stub_sec->size += size;
9470 if (htab->emit_stub_syms)
9472 struct elf_link_hash_entry *h;
9475 const char *const stub_str[] = { "long_branch",
9476 "long_branch_r2off",
9481 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
9482 len2 = strlen (stub_entry->root.string);
9483 name = bfd_malloc (len1 + len2 + 2);
9486 memcpy (name, stub_entry->root.string, 9);
9487 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
9488 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
9489 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
9492 if (h->root.type == bfd_link_hash_new)
9494 h->root.type = bfd_link_hash_defined;
9495 h->root.u.def.section = stub_entry->stub_sec;
9496 h->root.u.def.value = stub_entry->stub_offset;
9499 h->ref_regular_nonweak = 1;
9500 h->forced_local = 1;
9508 /* As above, but don't actually build the stub. Just bump offset so
9509 we know stub section sizes, and select plt_branch stubs where
9510 long_branch stubs won't do. */
9513 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
9515 struct ppc_stub_hash_entry *stub_entry;
9516 struct bfd_link_info *info;
9517 struct ppc_link_hash_table *htab;
9521 /* Massage our args to the form they really have. */
9522 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
9525 htab = ppc_hash_table (info);
9529 if (stub_entry->stub_type == ppc_stub_plt_call)
9532 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
9533 if (off >= (bfd_vma) -2)
9536 if (!htab->elf.dynamic_sections_created
9537 || stub_entry->h == NULL
9538 || stub_entry->h->elf.dynindx == -1)
9540 off += (plt->output_offset
9541 + plt->output_section->vma
9542 - elf_gp (plt->output_section->owner)
9543 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9545 size = PLT_CALL_STUB_SIZE;
9546 if (PPC_HA (off) == 0)
9548 if (PPC_HA (off + 16) != PPC_HA (off))
9550 if (stub_entry->h != NULL
9551 && (stub_entry->h == htab->tls_get_addr_fd
9552 || stub_entry->h == htab->tls_get_addr)
9553 && !htab->no_tls_get_addr_opt)
9555 if (info->emitrelocations)
9557 stub_entry->stub_sec->reloc_count
9558 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
9559 stub_entry->stub_sec->flags |= SEC_RELOC;
9564 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9568 off = (stub_entry->target_value
9569 + stub_entry->target_section->output_offset
9570 + stub_entry->target_section->output_section->vma);
9571 off -= (stub_entry->stub_sec->size
9572 + stub_entry->stub_sec->output_offset
9573 + stub_entry->stub_sec->output_section->vma);
9575 /* Reset the stub type from the plt variant in case we now
9576 can reach with a shorter stub. */
9577 if (stub_entry->stub_type >= ppc_stub_plt_branch)
9578 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
9581 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
9583 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
9584 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9586 if (PPC_HA (r2off) != 0)
9591 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9592 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9594 struct ppc_branch_hash_entry *br_entry;
9596 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
9597 stub_entry->root.string + 9,
9599 if (br_entry == NULL)
9601 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
9602 stub_entry->root.string);
9603 htab->stub_error = TRUE;
9607 if (br_entry->iter != htab->stub_iteration)
9609 br_entry->iter = htab->stub_iteration;
9610 br_entry->offset = htab->brlt->size;
9611 htab->brlt->size += 8;
9613 if (htab->relbrlt != NULL)
9614 htab->relbrlt->size += sizeof (Elf64_External_Rela);
9615 else if (info->emitrelocations)
9617 htab->brlt->reloc_count += 1;
9618 htab->brlt->flags |= SEC_RELOC;
9622 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
9623 off = (br_entry->offset
9624 + htab->brlt->output_offset
9625 + htab->brlt->output_section->vma
9626 - elf_gp (htab->brlt->output_section->owner)
9627 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9629 if (info->emitrelocations)
9631 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
9632 stub_entry->stub_sec->flags |= SEC_RELOC;
9635 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9638 if (PPC_HA (off) != 0)
9644 if (PPC_HA (off) != 0)
9647 if (PPC_HA (r2off) != 0)
9651 else if (info->emitrelocations)
9653 stub_entry->stub_sec->reloc_count += 1;
9654 stub_entry->stub_sec->flags |= SEC_RELOC;
9658 stub_entry->stub_sec->size += size;
9662 /* Set up various things so that we can make a list of input sections
9663 for each output section included in the link. Returns -1 on error,
9664 0 when no stubs will be needed, and 1 on success. */
9667 ppc64_elf_setup_section_lists
9668 (struct bfd_link_info *info,
9669 asection *(*add_stub_section) (const char *, asection *),
9670 void (*layout_sections_again) (void))
9673 int top_id, top_index, id;
9675 asection **input_list;
9677 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9681 /* Stash our params away. */
9682 htab->add_stub_section = add_stub_section;
9683 htab->layout_sections_again = layout_sections_again;
9685 if (htab->brlt == NULL)
9688 /* Find the top input section id. */
9689 for (input_bfd = info->input_bfds, top_id = 3;
9691 input_bfd = input_bfd->link_next)
9693 for (section = input_bfd->sections;
9695 section = section->next)
9697 if (top_id < section->id)
9698 top_id = section->id;
9702 htab->top_id = top_id;
9703 amt = sizeof (struct map_stub) * (top_id + 1);
9704 htab->stub_group = bfd_zmalloc (amt);
9705 if (htab->stub_group == NULL)
9708 /* Set toc_off for com, und, abs and ind sections. */
9709 for (id = 0; id < 3; id++)
9710 htab->stub_group[id].toc_off = TOC_BASE_OFF;
9712 /* We can't use output_bfd->section_count here to find the top output
9713 section index as some sections may have been removed, and
9714 strip_excluded_output_sections doesn't renumber the indices. */
9715 for (section = info->output_bfd->sections, top_index = 0;
9717 section = section->next)
9719 if (top_index < section->index)
9720 top_index = section->index;
9723 htab->top_index = top_index;
9724 amt = sizeof (asection *) * (top_index + 1);
9725 input_list = bfd_zmalloc (amt);
9726 htab->input_list = input_list;
9727 if (input_list == NULL)
9733 /* Set up for first pass at multitoc partitioning. */
9736 ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
9738 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9740 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
9741 htab->toc_curr = elf_gp (info->output_bfd);
9742 htab->toc_bfd = NULL;
9743 htab->toc_first_sec = NULL;
9746 /* The linker repeatedly calls this function for each TOC input section
9747 and linker generated GOT section. Group input bfds such that the toc
9748 within a group is less than 64k in size. */
9751 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
9753 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9759 if (!htab->second_toc_pass)
9761 /* Keep track of the first .toc or .got section for this input bfd. */
9762 if (htab->toc_bfd != isec->owner)
9764 htab->toc_bfd = isec->owner;
9765 htab->toc_first_sec = isec;
9768 addr = isec->output_offset + isec->output_section->vma;
9769 off = addr - htab->toc_curr;
9770 if (off + isec->size > 0x10000)
9772 addr = (htab->toc_first_sec->output_offset
9773 + htab->toc_first_sec->output_section->vma);
9774 htab->toc_curr = addr;
9777 /* toc_curr is the base address of this toc group. Set elf_gp
9778 for the input section to be the offset relative to the
9779 output toc base plus 0x8000. Making the input elf_gp an
9780 offset allows us to move the toc as a whole without
9781 recalculating input elf_gp. */
9782 off = htab->toc_curr - elf_gp (isec->output_section->owner);
9783 off += TOC_BASE_OFF;
9785 /* Die if someone uses a linker script that doesn't keep input
9786 file .toc and .got together. */
9787 if (elf_gp (isec->owner) != 0
9788 && elf_gp (isec->owner) != off)
9791 elf_gp (isec->owner) = off;
9795 /* During the second pass toc_first_sec points to the start of
9796 a toc group, and toc_curr is used to track the old elf_gp.
9797 We use toc_bfd to ensure we only look at each bfd once. */
9798 if (htab->toc_bfd == isec->owner)
9800 htab->toc_bfd = isec->owner;
9802 if (htab->toc_first_sec == NULL
9803 || htab->toc_curr != elf_gp (isec->owner))
9805 htab->toc_curr = elf_gp (isec->owner);
9806 htab->toc_first_sec = isec;
9808 addr = (htab->toc_first_sec->output_offset
9809 + htab->toc_first_sec->output_section->vma);
9810 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
9811 elf_gp (isec->owner) = off;
9816 /* This function removes unneeded got entries (those with got.offset == -1)
9817 and merges entries in the same toc group. */
9820 merge_got_entries (struct got_entry **pent)
9822 struct got_entry *ent, *ent2;
9824 while ((ent = *pent) != NULL)
9826 if (!ent->is_indirect)
9828 if (ent->got.offset == (bfd_vma) -1)
9833 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9834 if (!ent2->is_indirect
9835 && ent2->got.offset != (bfd_vma) -1
9836 && ent2->addend == ent->addend
9837 && ent2->tls_type == ent->tls_type
9838 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9840 ent2->is_indirect = TRUE;
9841 ent2->got.ent = ent;
9848 /* Called via elf_link_hash_traverse to merge GOT entries for global
9852 merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9854 if (h->root.type == bfd_link_hash_indirect)
9857 if (h->root.type == bfd_link_hash_warning)
9858 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9860 merge_got_entries (&h->got.glist);
9865 /* Called via elf_link_hash_traverse to allocate GOT entries for global
9869 reallocate_got (struct elf_link_hash_entry *h, void *inf)
9871 struct got_entry *gent;
9873 if (h->root.type == bfd_link_hash_indirect)
9876 if (h->root.type == bfd_link_hash_warning)
9877 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9879 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9880 if (!gent->is_indirect)
9881 allocate_got (h, (struct bfd_link_info *) inf, gent);
9885 /* Called on the first multitoc pass after the last call to
9886 ppc64_elf_next_toc_section. This function removes duplicate GOT
9890 ppc64_elf_layout_multitoc (struct bfd_link_info *info)
9892 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9893 struct bfd *ibfd, *ibfd2;
9894 bfd_boolean done_something;
9896 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
9898 /* Merge local got entries within a toc group. */
9899 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9901 struct got_entry **lgot_ents;
9902 struct got_entry **end_lgot_ents;
9903 Elf_Internal_Shdr *symtab_hdr;
9904 bfd_size_type locsymcount;
9906 if (!is_ppc64_elf (ibfd))
9909 lgot_ents = elf_local_got_ents (ibfd);
9913 symtab_hdr = &elf_symtab_hdr (ibfd);
9914 locsymcount = symtab_hdr->sh_info;
9915 end_lgot_ents = lgot_ents + locsymcount;
9917 for (; lgot_ents < end_lgot_ents; ++lgot_ents)
9918 merge_got_entries (lgot_ents);
9921 /* And the same for global sym got entries. */
9922 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
9924 /* And tlsld_got. */
9925 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9927 struct got_entry *ent, *ent2;
9929 if (!is_ppc64_elf (ibfd))
9932 ent = ppc64_tlsld_got (ibfd);
9933 if (!ent->is_indirect
9934 && ent->got.offset != (bfd_vma) -1)
9936 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
9938 if (!is_ppc64_elf (ibfd2))
9941 ent2 = ppc64_tlsld_got (ibfd2);
9942 if (!ent2->is_indirect
9943 && ent2->got.offset != (bfd_vma) -1
9944 && elf_gp (ibfd2) == elf_gp (ibfd))
9946 ent2->is_indirect = TRUE;
9947 ent2->got.ent = ent;
9953 /* Zap sizes of got sections. */
9954 htab->reliplt->rawsize = htab->reliplt->size;
9955 htab->reliplt->size -= htab->got_reli_size;
9956 htab->got_reli_size = 0;
9958 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9960 asection *got, *relgot;
9962 if (!is_ppc64_elf (ibfd))
9965 got = ppc64_elf_tdata (ibfd)->got;
9968 got->rawsize = got->size;
9970 relgot = ppc64_elf_tdata (ibfd)->relgot;
9971 relgot->rawsize = relgot->size;
9976 /* Now reallocate the got, local syms first. We don't need to
9977 allocate section contents again since we never increase size. */
9978 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9980 struct got_entry **lgot_ents;
9981 struct got_entry **end_lgot_ents;
9982 struct plt_entry **local_plt;
9983 struct plt_entry **end_local_plt;
9985 bfd_size_type locsymcount;
9986 Elf_Internal_Shdr *symtab_hdr;
9989 if (!is_ppc64_elf (ibfd))
9992 lgot_ents = elf_local_got_ents (ibfd);
9996 symtab_hdr = &elf_symtab_hdr (ibfd);
9997 locsymcount = symtab_hdr->sh_info;
9998 end_lgot_ents = lgot_ents + locsymcount;
9999 local_plt = (struct plt_entry **) end_lgot_ents;
10000 end_local_plt = local_plt + locsymcount;
10001 lgot_masks = (char *) end_local_plt;
10002 s = ppc64_elf_tdata (ibfd)->got;
10003 srel = ppc64_elf_tdata (ibfd)->relgot;
10004 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10006 struct got_entry *ent;
10008 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
10009 if (!ent->is_indirect)
10011 unsigned int num = 1;
10012 ent->got.offset = s->size;
10013 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10015 s->size += num * 8;
10017 srel->size += num * sizeof (Elf64_External_Rela);
10018 else if ((*lgot_masks & PLT_IFUNC) != 0)
10020 htab->reliplt->size
10021 += num * sizeof (Elf64_External_Rela);
10022 htab->got_reli_size
10023 += num * sizeof (Elf64_External_Rela);
10029 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10031 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10033 struct got_entry *ent;
10035 if (!is_ppc64_elf (ibfd))
10038 ent = ppc64_tlsld_got (ibfd);
10039 if (!ent->is_indirect
10040 && ent->got.offset != (bfd_vma) -1)
10042 asection *s = ppc64_elf_tdata (ibfd)->got;
10043 ent->got.offset = s->size;
10047 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10048 srel->size += sizeof (Elf64_External_Rela);
10053 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10054 if (!done_something)
10055 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10059 if (!is_ppc64_elf (ibfd))
10062 got = ppc64_elf_tdata (ibfd)->got;
10065 done_something = got->rawsize != got->size;
10066 if (done_something)
10071 if (done_something)
10072 (*htab->layout_sections_again) ();
10074 /* Set up for second pass over toc sections to recalculate elf_gp
10075 on input sections. */
10076 htab->toc_bfd = NULL;
10077 htab->toc_first_sec = NULL;
10078 htab->second_toc_pass = TRUE;
10079 return done_something;
10082 /* Called after second pass of multitoc partitioning. */
10085 ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10087 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10092 /* After the second pass, toc_curr tracks the TOC offset used
10093 for code sections below in ppc64_elf_next_input_section. */
10094 htab->toc_curr = TOC_BASE_OFF;
10097 /* No toc references were found in ISEC. If the code in ISEC makes no
10098 calls, then there's no need to use toc adjusting stubs when branching
10099 into ISEC. Actually, indirect calls from ISEC are OK as they will
10100 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10101 needed, and 2 if a cyclical call-graph was found but no other reason
10102 for a stub was detected. If called from the top level, a return of
10103 2 means the same as a return of 0. */
10106 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
10108 Elf_Internal_Rela *relstart, *rel;
10109 Elf_Internal_Sym *local_syms;
10111 struct ppc_link_hash_table *htab;
10113 /* We know none of our code bearing sections will need toc stubs. */
10114 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10117 if (isec->size == 0)
10120 if (isec->output_section == NULL)
10123 if (isec->reloc_count == 0)
10126 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10127 info->keep_memory);
10128 if (relstart == NULL)
10131 /* Look for branches to outside of this section. */
10134 htab = ppc_hash_table (info);
10138 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
10140 enum elf_ppc64_reloc_type r_type;
10141 unsigned long r_symndx;
10142 struct elf_link_hash_entry *h;
10143 struct ppc_link_hash_entry *eh;
10144 Elf_Internal_Sym *sym;
10146 struct _opd_sec_data *opd;
10150 r_type = ELF64_R_TYPE (rel->r_info);
10151 if (r_type != R_PPC64_REL24
10152 && r_type != R_PPC64_REL14
10153 && r_type != R_PPC64_REL14_BRTAKEN
10154 && r_type != R_PPC64_REL14_BRNTAKEN)
10157 r_symndx = ELF64_R_SYM (rel->r_info);
10158 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10165 /* Calls to dynamic lib functions go through a plt call stub
10167 eh = (struct ppc_link_hash_entry *) h;
10169 && (eh->elf.plt.plist != NULL
10171 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10177 if (sym_sec == NULL)
10178 /* Ignore other undefined symbols. */
10181 /* Assume branches to other sections not included in the link need
10182 stubs too, to cover -R and absolute syms. */
10183 if (sym_sec->output_section == NULL)
10190 sym_value = sym->st_value;
10193 if (h->root.type != bfd_link_hash_defined
10194 && h->root.type != bfd_link_hash_defweak)
10196 sym_value = h->root.u.def.value;
10198 sym_value += rel->r_addend;
10200 /* If this branch reloc uses an opd sym, find the code section. */
10201 opd = get_opd_info (sym_sec);
10204 if (h == NULL && opd->adjust != NULL)
10208 adjust = opd->adjust[sym->st_value / 8];
10210 /* Assume deleted functions won't ever be called. */
10212 sym_value += adjust;
10215 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
10216 if (dest == (bfd_vma) -1)
10221 + sym_sec->output_offset
10222 + sym_sec->output_section->vma);
10224 /* Ignore branch to self. */
10225 if (sym_sec == isec)
10228 /* If the called function uses the toc, we need a stub. */
10229 if (sym_sec->has_toc_reloc
10230 || sym_sec->makes_toc_func_call)
10236 /* Assume any branch that needs a long branch stub might in fact
10237 need a plt_branch stub. A plt_branch stub uses r2. */
10238 else if (dest - (isec->output_offset
10239 + isec->output_section->vma
10240 + rel->r_offset) + (1 << 25) >= (2 << 25))
10246 /* If calling back to a section in the process of being tested, we
10247 can't say for sure that no toc adjusting stubs are needed, so
10248 don't return zero. */
10249 else if (sym_sec->call_check_in_progress)
10252 /* Branches to another section that itself doesn't have any TOC
10253 references are OK. Recursively call ourselves to check. */
10254 else if (sym_sec->id <= htab->top_id
10255 && htab->stub_group[sym_sec->id].toc_off == 0)
10259 /* Mark current section as indeterminate, so that other
10260 sections that call back to current won't be marked as
10262 isec->call_check_in_progress = 1;
10263 recur = toc_adjusting_stub_needed (info, sym_sec);
10264 isec->call_check_in_progress = 0;
10268 /* An error. Exit. */
10272 else if (recur <= 1)
10274 /* Known result. Mark as checked and set section flag. */
10275 htab->stub_group[sym_sec->id].toc_off = 1;
10278 sym_sec->makes_toc_func_call = 1;
10285 /* Unknown result. Continue checking. */
10291 if (local_syms != NULL
10292 && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms))
10294 if (elf_section_data (isec)->relocs != relstart)
10300 /* The linker repeatedly calls this function for each input section,
10301 in the order that input sections are linked into output sections.
10302 Build lists of input sections to determine groupings between which
10303 we may insert linker stubs. */
10306 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
10308 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10313 if ((isec->output_section->flags & SEC_CODE) != 0
10314 && isec->output_section->index <= htab->top_index)
10316 asection **list = htab->input_list + isec->output_section->index;
10317 /* Steal the link_sec pointer for our list. */
10318 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10319 /* This happens to make the list in reverse order,
10320 which is what we want. */
10321 PREV_SEC (isec) = *list;
10325 if (htab->multi_toc_needed)
10327 /* If a code section has a function that uses the TOC then we need
10328 to use the right TOC (obviously). Also, make sure that .opd gets
10329 the correct TOC value for R_PPC64_TOC relocs that don't have or
10330 can't find their function symbol (shouldn't ever happen now).
10331 Also specially treat .fixup for the linux kernel. .fixup
10332 contains branches, but only back to the function that hit an
10334 if (isec->has_toc_reloc
10335 || (isec->flags & SEC_CODE) == 0
10336 || strcmp (isec->name, ".fixup") == 0)
10338 if (elf_gp (isec->owner) != 0)
10339 htab->toc_curr = elf_gp (isec->owner);
10341 else if (htab->stub_group[isec->id].toc_off == 0)
10343 int ret = toc_adjusting_stub_needed (info, isec);
10347 isec->makes_toc_func_call = ret & 1;
10351 /* Functions that don't use the TOC can belong in any TOC group.
10352 Use the last TOC base. This happens to make _init and _fini
10354 htab->stub_group[isec->id].toc_off = htab->toc_curr;
10358 /* See whether we can group stub sections together. Grouping stub
10359 sections may result in fewer stubs. More importantly, we need to
10360 put all .init* and .fini* stubs at the beginning of the .init or
10361 .fini output sections respectively, because glibc splits the
10362 _init and _fini functions into multiple parts. Putting a stub in
10363 the middle of a function is not a good idea. */
10366 group_sections (struct ppc_link_hash_table *htab,
10367 bfd_size_type stub_group_size,
10368 bfd_boolean stubs_always_before_branch)
10371 bfd_size_type stub14_group_size;
10372 bfd_boolean suppress_size_errors;
10374 suppress_size_errors = FALSE;
10375 stub14_group_size = stub_group_size;
10376 if (stub_group_size == 1)
10378 /* Default values. */
10379 if (stubs_always_before_branch)
10381 stub_group_size = 0x1e00000;
10382 stub14_group_size = 0x7800;
10386 stub_group_size = 0x1c00000;
10387 stub14_group_size = 0x7000;
10389 suppress_size_errors = TRUE;
10392 list = htab->input_list + htab->top_index;
10395 asection *tail = *list;
10396 while (tail != NULL)
10400 bfd_size_type total;
10401 bfd_boolean big_sec;
10405 total = tail->size;
10406 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
10407 ? stub14_group_size : stub_group_size);
10408 if (big_sec && !suppress_size_errors)
10409 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
10410 tail->owner, tail);
10411 curr_toc = htab->stub_group[tail->id].toc_off;
10413 while ((prev = PREV_SEC (curr)) != NULL
10414 && ((total += curr->output_offset - prev->output_offset)
10415 < (ppc64_elf_section_data (prev)->has_14bit_branch
10416 ? stub14_group_size : stub_group_size))
10417 && htab->stub_group[prev->id].toc_off == curr_toc)
10420 /* OK, the size from the start of CURR to the end is less
10421 than stub_group_size and thus can be handled by one stub
10422 section. (or the tail section is itself larger than
10423 stub_group_size, in which case we may be toast.) We
10424 should really be keeping track of the total size of stubs
10425 added here, as stubs contribute to the final output
10426 section size. That's a little tricky, and this way will
10427 only break if stubs added make the total size more than
10428 2^25, ie. for the default stub_group_size, if stubs total
10429 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10432 prev = PREV_SEC (tail);
10433 /* Set up this stub group. */
10434 htab->stub_group[tail->id].link_sec = curr;
10436 while (tail != curr && (tail = prev) != NULL);
10438 /* But wait, there's more! Input sections up to stub_group_size
10439 bytes before the stub section can be handled by it too.
10440 Don't do this if we have a really large section after the
10441 stubs, as adding more stubs increases the chance that
10442 branches may not reach into the stub section. */
10443 if (!stubs_always_before_branch && !big_sec)
10446 while (prev != NULL
10447 && ((total += tail->output_offset - prev->output_offset)
10448 < (ppc64_elf_section_data (prev)->has_14bit_branch
10449 ? stub14_group_size : stub_group_size))
10450 && htab->stub_group[prev->id].toc_off == curr_toc)
10453 prev = PREV_SEC (tail);
10454 htab->stub_group[tail->id].link_sec = curr;
10460 while (list-- != htab->input_list);
10461 free (htab->input_list);
10465 /* Determine and set the size of the stub section for a final link.
10467 The basic idea here is to examine all the relocations looking for
10468 PC-relative calls to a target that is unreachable with a "bl"
10472 ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size)
10474 bfd_size_type stub_group_size;
10475 bfd_boolean stubs_always_before_branch;
10476 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10481 stubs_always_before_branch = group_size < 0;
10482 if (group_size < 0)
10483 stub_group_size = -group_size;
10485 stub_group_size = group_size;
10487 group_sections (htab, stub_group_size, stubs_always_before_branch);
10492 unsigned int bfd_indx;
10493 asection *stub_sec;
10495 htab->stub_iteration += 1;
10497 for (input_bfd = info->input_bfds, bfd_indx = 0;
10499 input_bfd = input_bfd->link_next, bfd_indx++)
10501 Elf_Internal_Shdr *symtab_hdr;
10503 Elf_Internal_Sym *local_syms = NULL;
10505 if (!is_ppc64_elf (input_bfd))
10508 /* We'll need the symbol table in a second. */
10509 symtab_hdr = &elf_symtab_hdr (input_bfd);
10510 if (symtab_hdr->sh_info == 0)
10513 /* Walk over each section attached to the input bfd. */
10514 for (section = input_bfd->sections;
10516 section = section->next)
10518 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
10520 /* If there aren't any relocs, then there's nothing more
10522 if ((section->flags & SEC_RELOC) == 0
10523 || (section->flags & SEC_ALLOC) == 0
10524 || (section->flags & SEC_LOAD) == 0
10525 || (section->flags & SEC_CODE) == 0
10526 || section->reloc_count == 0)
10529 /* If this section is a link-once section that will be
10530 discarded, then don't create any stubs. */
10531 if (section->output_section == NULL
10532 || section->output_section->owner != info->output_bfd)
10535 /* Get the relocs. */
10537 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
10538 info->keep_memory);
10539 if (internal_relocs == NULL)
10540 goto error_ret_free_local;
10542 /* Now examine each relocation. */
10543 irela = internal_relocs;
10544 irelaend = irela + section->reloc_count;
10545 for (; irela < irelaend; irela++)
10547 enum elf_ppc64_reloc_type r_type;
10548 unsigned int r_indx;
10549 enum ppc_stub_type stub_type;
10550 struct ppc_stub_hash_entry *stub_entry;
10551 asection *sym_sec, *code_sec;
10552 bfd_vma sym_value, code_value;
10553 bfd_vma destination;
10554 bfd_boolean ok_dest;
10555 struct ppc_link_hash_entry *hash;
10556 struct ppc_link_hash_entry *fdh;
10557 struct elf_link_hash_entry *h;
10558 Elf_Internal_Sym *sym;
10560 const asection *id_sec;
10561 struct _opd_sec_data *opd;
10562 struct plt_entry *plt_ent;
10564 r_type = ELF64_R_TYPE (irela->r_info);
10565 r_indx = ELF64_R_SYM (irela->r_info);
10567 if (r_type >= R_PPC64_max)
10569 bfd_set_error (bfd_error_bad_value);
10570 goto error_ret_free_internal;
10573 /* Only look for stubs on branch instructions. */
10574 if (r_type != R_PPC64_REL24
10575 && r_type != R_PPC64_REL14
10576 && r_type != R_PPC64_REL14_BRTAKEN
10577 && r_type != R_PPC64_REL14_BRNTAKEN)
10580 /* Now determine the call target, its name, value,
10582 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
10583 r_indx, input_bfd))
10584 goto error_ret_free_internal;
10585 hash = (struct ppc_link_hash_entry *) h;
10592 sym_value = sym->st_value;
10595 else if (hash->elf.root.type == bfd_link_hash_defined
10596 || hash->elf.root.type == bfd_link_hash_defweak)
10598 sym_value = hash->elf.root.u.def.value;
10599 if (sym_sec->output_section != NULL)
10602 else if (hash->elf.root.type == bfd_link_hash_undefweak
10603 || hash->elf.root.type == bfd_link_hash_undefined)
10605 /* Recognise an old ABI func code entry sym, and
10606 use the func descriptor sym instead if it is
10608 if (hash->elf.root.root.string[0] == '.'
10609 && (fdh = lookup_fdh (hash, htab)) != NULL)
10611 if (fdh->elf.root.type == bfd_link_hash_defined
10612 || fdh->elf.root.type == bfd_link_hash_defweak)
10614 sym_sec = fdh->elf.root.u.def.section;
10615 sym_value = fdh->elf.root.u.def.value;
10616 if (sym_sec->output_section != NULL)
10625 bfd_set_error (bfd_error_bad_value);
10626 goto error_ret_free_internal;
10632 sym_value += irela->r_addend;
10633 destination = (sym_value
10634 + sym_sec->output_offset
10635 + sym_sec->output_section->vma);
10638 code_sec = sym_sec;
10639 code_value = sym_value;
10640 opd = get_opd_info (sym_sec);
10645 if (hash == NULL && opd->adjust != NULL)
10647 long adjust = opd->adjust[sym_value / 8];
10650 code_value += adjust;
10651 sym_value += adjust;
10653 dest = opd_entry_value (sym_sec, sym_value,
10654 &code_sec, &code_value);
10655 if (dest != (bfd_vma) -1)
10657 destination = dest;
10660 /* Fixup old ABI sym to point at code
10662 hash->elf.root.type = bfd_link_hash_defweak;
10663 hash->elf.root.u.def.section = code_sec;
10664 hash->elf.root.u.def.value = code_value;
10669 /* Determine what (if any) linker stub is needed. */
10671 stub_type = ppc_type_of_stub (section, irela, &hash,
10672 &plt_ent, destination);
10674 if (stub_type != ppc_stub_plt_call)
10676 /* Check whether we need a TOC adjusting stub.
10677 Since the linker pastes together pieces from
10678 different object files when creating the
10679 _init and _fini functions, it may be that a
10680 call to what looks like a local sym is in
10681 fact a call needing a TOC adjustment. */
10682 if (code_sec != NULL
10683 && code_sec->output_section != NULL
10684 && (htab->stub_group[code_sec->id].toc_off
10685 != htab->stub_group[section->id].toc_off)
10686 && (code_sec->has_toc_reloc
10687 || code_sec->makes_toc_func_call))
10688 stub_type = ppc_stub_long_branch_r2off;
10691 if (stub_type == ppc_stub_none)
10694 /* __tls_get_addr calls might be eliminated. */
10695 if (stub_type != ppc_stub_plt_call
10697 && (hash == htab->tls_get_addr
10698 || hash == htab->tls_get_addr_fd)
10699 && section->has_tls_reloc
10700 && irela != internal_relocs)
10702 /* Get tls info. */
10705 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
10706 irela - 1, input_bfd))
10707 goto error_ret_free_internal;
10708 if (*tls_mask != 0)
10712 /* Support for grouping stub sections. */
10713 id_sec = htab->stub_group[section->id].link_sec;
10715 /* Get the name of this stub. */
10716 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
10718 goto error_ret_free_internal;
10720 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
10721 stub_name, FALSE, FALSE);
10722 if (stub_entry != NULL)
10724 /* The proper stub has already been created. */
10729 stub_entry = ppc_add_stub (stub_name, section, htab);
10730 if (stub_entry == NULL)
10733 error_ret_free_internal:
10734 if (elf_section_data (section)->relocs == NULL)
10735 free (internal_relocs);
10736 error_ret_free_local:
10737 if (local_syms != NULL
10738 && (symtab_hdr->contents
10739 != (unsigned char *) local_syms))
10744 stub_entry->stub_type = stub_type;
10745 if (stub_type != ppc_stub_plt_call)
10747 stub_entry->target_value = code_value;
10748 stub_entry->target_section = code_sec;
10752 stub_entry->target_value = sym_value;
10753 stub_entry->target_section = sym_sec;
10755 stub_entry->h = hash;
10756 stub_entry->plt_ent = plt_ent;
10757 stub_entry->addend = irela->r_addend;
10759 if (stub_entry->h != NULL)
10760 htab->stub_globals += 1;
10763 /* We're done with the internal relocs, free them. */
10764 if (elf_section_data (section)->relocs != internal_relocs)
10765 free (internal_relocs);
10768 if (local_syms != NULL
10769 && symtab_hdr->contents != (unsigned char *) local_syms)
10771 if (!info->keep_memory)
10774 symtab_hdr->contents = (unsigned char *) local_syms;
10778 /* We may have added some stubs. Find out the new size of the
10780 for (stub_sec = htab->stub_bfd->sections;
10782 stub_sec = stub_sec->next)
10783 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
10785 stub_sec->rawsize = stub_sec->size;
10786 stub_sec->size = 0;
10787 stub_sec->reloc_count = 0;
10788 stub_sec->flags &= ~SEC_RELOC;
10791 htab->brlt->size = 0;
10792 htab->brlt->reloc_count = 0;
10793 htab->brlt->flags &= ~SEC_RELOC;
10794 if (htab->relbrlt != NULL)
10795 htab->relbrlt->size = 0;
10797 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
10799 if (info->emitrelocations
10800 && htab->glink != NULL && htab->glink->size != 0)
10802 htab->glink->reloc_count = 1;
10803 htab->glink->flags |= SEC_RELOC;
10806 for (stub_sec = htab->stub_bfd->sections;
10808 stub_sec = stub_sec->next)
10809 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
10810 && stub_sec->rawsize != stub_sec->size)
10813 /* Exit from this loop when no stubs have been added, and no stubs
10814 have changed size. */
10815 if (stub_sec == NULL)
10818 /* Ask the linker to do its stuff. */
10819 (*htab->layout_sections_again) ();
10822 /* It would be nice to strip htab->brlt from the output if the
10823 section is empty, but it's too late. If we strip sections here,
10824 the dynamic symbol table is corrupted since the section symbol
10825 for the stripped section isn't written. */
10830 /* Called after we have determined section placement. If sections
10831 move, we'll be called again. Provide a value for TOCstart. */
10834 ppc64_elf_toc (bfd *obfd)
10839 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
10840 order. The TOC starts where the first of these sections starts. */
10841 s = bfd_get_section_by_name (obfd, ".got");
10842 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10843 s = bfd_get_section_by_name (obfd, ".toc");
10844 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10845 s = bfd_get_section_by_name (obfd, ".tocbss");
10846 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10847 s = bfd_get_section_by_name (obfd, ".plt");
10848 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
10850 /* This may happen for
10851 o references to TOC base (SYM@toc / TOC[tc0]) without a
10853 o bad linker script
10854 o --gc-sections and empty TOC sections
10856 FIXME: Warn user? */
10858 /* Look for a likely section. We probably won't even be
10860 for (s = obfd->sections; s != NULL; s = s->next)
10861 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
10863 == (SEC_ALLOC | SEC_SMALL_DATA))
10866 for (s = obfd->sections; s != NULL; s = s->next)
10867 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
10868 == (SEC_ALLOC | SEC_SMALL_DATA))
10871 for (s = obfd->sections; s != NULL; s = s->next)
10872 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
10876 for (s = obfd->sections; s != NULL; s = s->next)
10877 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
10883 TOCstart = s->output_section->vma + s->output_offset;
10888 /* Build all the stubs associated with the current output file.
10889 The stubs are kept in a hash table attached to the main linker
10890 hash table. This function is called via gldelf64ppc_finish. */
10893 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
10894 struct bfd_link_info *info,
10897 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10898 asection *stub_sec;
10900 int stub_sec_count = 0;
10905 htab->emit_stub_syms = emit_stub_syms;
10907 /* Allocate memory to hold the linker stubs. */
10908 for (stub_sec = htab->stub_bfd->sections;
10910 stub_sec = stub_sec->next)
10911 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
10912 && stub_sec->size != 0)
10914 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
10915 if (stub_sec->contents == NULL)
10917 /* We want to check that built size is the same as calculated
10918 size. rawsize is a convenient location to use. */
10919 stub_sec->rawsize = stub_sec->size;
10920 stub_sec->size = 0;
10923 if (htab->glink != NULL && htab->glink->size != 0)
10928 /* Build the .glink plt call stub. */
10929 if (htab->emit_stub_syms)
10931 struct elf_link_hash_entry *h;
10932 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
10933 TRUE, FALSE, FALSE);
10936 if (h->root.type == bfd_link_hash_new)
10938 h->root.type = bfd_link_hash_defined;
10939 h->root.u.def.section = htab->glink;
10940 h->root.u.def.value = 8;
10941 h->ref_regular = 1;
10942 h->def_regular = 1;
10943 h->ref_regular_nonweak = 1;
10944 h->forced_local = 1;
10948 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
10949 if (info->emitrelocations)
10951 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
10954 r->r_offset = (htab->glink->output_offset
10955 + htab->glink->output_section->vma);
10956 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
10957 r->r_addend = plt0;
10959 p = htab->glink->contents;
10960 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
10961 bfd_put_64 (htab->glink->owner, plt0, p);
10963 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
10965 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
10967 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
10969 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
10971 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
10973 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
10975 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
10977 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
10979 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
10981 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
10983 bfd_put_32 (htab->glink->owner, BCTR, p);
10985 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
10987 bfd_put_32 (htab->glink->owner, NOP, p);
10991 /* Build the .glink lazy link call stubs. */
10993 while (p < htab->glink->contents + htab->glink->size)
10997 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
11002 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
11004 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
11007 bfd_put_32 (htab->glink->owner,
11008 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
11012 htab->glink->rawsize = p - htab->glink->contents;
11015 if (htab->brlt->size != 0)
11017 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
11019 if (htab->brlt->contents == NULL)
11022 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
11024 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
11025 htab->relbrlt->size);
11026 if (htab->relbrlt->contents == NULL)
11030 /* Build the stubs as directed by the stub hash table. */
11031 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
11033 if (htab->relbrlt != NULL)
11034 htab->relbrlt->reloc_count = 0;
11036 for (stub_sec = htab->stub_bfd->sections;
11038 stub_sec = stub_sec->next)
11039 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11041 stub_sec_count += 1;
11042 if (stub_sec->rawsize != stub_sec->size)
11046 if (stub_sec != NULL
11047 || htab->glink->rawsize != htab->glink->size)
11049 htab->stub_error = TRUE;
11050 (*_bfd_error_handler) (_("stubs don't match calculated size"));
11053 if (htab->stub_error)
11058 *stats = bfd_malloc (500);
11059 if (*stats == NULL)
11062 sprintf (*stats, _("linker stubs in %u group%s\n"
11064 " toc adjust %lu\n"
11065 " long branch %lu\n"
11066 " long toc adj %lu\n"
11069 stub_sec_count == 1 ? "" : "s",
11070 htab->stub_count[ppc_stub_long_branch - 1],
11071 htab->stub_count[ppc_stub_long_branch_r2off - 1],
11072 htab->stub_count[ppc_stub_plt_branch - 1],
11073 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
11074 htab->stub_count[ppc_stub_plt_call - 1]);
11079 /* This function undoes the changes made by add_symbol_adjust. */
11082 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11084 struct ppc_link_hash_entry *eh;
11086 if (h->root.type == bfd_link_hash_indirect)
11089 if (h->root.type == bfd_link_hash_warning)
11090 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11092 eh = (struct ppc_link_hash_entry *) h;
11093 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
11096 eh->elf.root.type = bfd_link_hash_undefined;
11101 ppc64_elf_restore_symbols (struct bfd_link_info *info)
11103 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11106 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
11109 /* What to do when ld finds relocations against symbols defined in
11110 discarded sections. */
11112 static unsigned int
11113 ppc64_elf_action_discarded (asection *sec)
11115 if (strcmp (".opd", sec->name) == 0)
11118 if (strcmp (".toc", sec->name) == 0)
11121 if (strcmp (".toc1", sec->name) == 0)
11124 return _bfd_elf_default_action_discarded (sec);
11127 /* The RELOCATE_SECTION function is called by the ELF backend linker
11128 to handle the relocations for a section.
11130 The relocs are always passed as Rela structures; if the section
11131 actually uses Rel structures, the r_addend field will always be
11134 This function is responsible for adjust the section contents as
11135 necessary, and (if using Rela relocs and generating a
11136 relocatable output file) adjusting the reloc addend as
11139 This function does not have to worry about setting the reloc
11140 address or the reloc symbol index.
11142 LOCAL_SYMS is a pointer to the swapped in local symbols.
11144 LOCAL_SECTIONS is an array giving the section in the input file
11145 corresponding to the st_shndx field of each local symbol.
11147 The global hash table entry for the global symbols can be found
11148 via elf_sym_hashes (input_bfd).
11150 When generating relocatable output, this function must handle
11151 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11152 going to be the section symbol corresponding to the output
11153 section, which means that the addend must be adjusted
11157 ppc64_elf_relocate_section (bfd *output_bfd,
11158 struct bfd_link_info *info,
11160 asection *input_section,
11161 bfd_byte *contents,
11162 Elf_Internal_Rela *relocs,
11163 Elf_Internal_Sym *local_syms,
11164 asection **local_sections)
11166 struct ppc_link_hash_table *htab;
11167 Elf_Internal_Shdr *symtab_hdr;
11168 struct elf_link_hash_entry **sym_hashes;
11169 Elf_Internal_Rela *rel;
11170 Elf_Internal_Rela *relend;
11171 Elf_Internal_Rela outrel;
11173 struct got_entry **local_got_ents;
11175 bfd_boolean ret = TRUE;
11176 bfd_boolean is_opd;
11177 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11178 bfd_boolean is_power4 = FALSE;
11179 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
11181 /* Initialize howto table if needed. */
11182 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
11185 htab = ppc_hash_table (info);
11189 /* Don't relocate stub sections. */
11190 if (input_section->owner == htab->stub_bfd)
11193 BFD_ASSERT (is_ppc64_elf (input_bfd));
11195 local_got_ents = elf_local_got_ents (input_bfd);
11196 TOCstart = elf_gp (output_bfd);
11197 symtab_hdr = &elf_symtab_hdr (input_bfd);
11198 sym_hashes = elf_sym_hashes (input_bfd);
11199 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
11202 relend = relocs + input_section->reloc_count;
11203 for (; rel < relend; rel++)
11205 enum elf_ppc64_reloc_type r_type;
11206 bfd_vma addend, orig_addend;
11207 bfd_reloc_status_type r;
11208 Elf_Internal_Sym *sym;
11210 struct elf_link_hash_entry *h_elf;
11211 struct ppc_link_hash_entry *h;
11212 struct ppc_link_hash_entry *fdh;
11213 const char *sym_name;
11214 unsigned long r_symndx, toc_symndx;
11215 bfd_vma toc_addend;
11216 char tls_mask, tls_gd, tls_type;
11218 bfd_vma relocation;
11219 bfd_boolean unresolved_reloc;
11220 bfd_boolean warned;
11221 unsigned long insn, mask;
11222 struct ppc_stub_hash_entry *stub_entry;
11223 bfd_vma max_br_offset;
11226 r_type = ELF64_R_TYPE (rel->r_info);
11227 r_symndx = ELF64_R_SYM (rel->r_info);
11229 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11230 symbol of the previous ADDR64 reloc. The symbol gives us the
11231 proper TOC base to use. */
11232 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
11234 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
11236 r_symndx = ELF64_R_SYM (rel[-1].r_info);
11242 unresolved_reloc = FALSE;
11244 orig_addend = rel->r_addend;
11246 if (r_symndx < symtab_hdr->sh_info)
11248 /* It's a local symbol. */
11249 struct _opd_sec_data *opd;
11251 sym = local_syms + r_symndx;
11252 sec = local_sections[r_symndx];
11253 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
11254 sym_type = ELF64_ST_TYPE (sym->st_info);
11255 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
11256 opd = get_opd_info (sec);
11257 if (opd != NULL && opd->adjust != NULL)
11259 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
11264 /* If this is a relocation against the opd section sym
11265 and we have edited .opd, adjust the reloc addend so
11266 that ld -r and ld --emit-relocs output is correct.
11267 If it is a reloc against some other .opd symbol,
11268 then the symbol value will be adjusted later. */
11269 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
11270 rel->r_addend += adjust;
11272 relocation += adjust;
11278 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
11279 r_symndx, symtab_hdr, sym_hashes,
11280 h_elf, sec, relocation,
11281 unresolved_reloc, warned);
11282 sym_name = h_elf->root.root.string;
11283 sym_type = h_elf->type;
11285 h = (struct ppc_link_hash_entry *) h_elf;
11287 if (sec != NULL && elf_discarded_section (sec))
11289 /* For relocs against symbols from removed linkonce sections,
11290 or sections discarded by a linker script, we just want the
11291 section contents zeroed. Avoid any special processing. */
11292 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
11293 contents + rel->r_offset);
11299 if (info->relocatable)
11302 /* TLS optimizations. Replace instruction sequences and relocs
11303 based on information we collected in tls_optimize. We edit
11304 RELOCS so that --emit-relocs will output something sensible
11305 for the final instruction stream. */
11310 tls_mask = h->tls_mask;
11311 else if (local_got_ents != NULL)
11313 struct plt_entry **local_plt = (struct plt_entry **)
11314 (local_got_ents + symtab_hdr->sh_info);
11315 char *lgot_masks = (char *)
11316 (local_plt + symtab_hdr->sh_info);
11317 tls_mask = lgot_masks[r_symndx];
11320 && (r_type == R_PPC64_TLS
11321 || r_type == R_PPC64_TLSGD
11322 || r_type == R_PPC64_TLSLD))
11324 /* Check for toc tls entries. */
11327 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11328 &local_syms, rel, input_bfd))
11332 tls_mask = *toc_tls;
11335 /* Check that tls relocs are used with tls syms, and non-tls
11336 relocs are used with non-tls syms. */
11338 && r_type != R_PPC64_NONE
11340 || h->elf.root.type == bfd_link_hash_defined
11341 || h->elf.root.type == bfd_link_hash_defweak)
11342 && (IS_PPC64_TLS_RELOC (r_type)
11343 != (sym_type == STT_TLS
11344 || (sym_type == STT_SECTION
11345 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
11348 && (r_type == R_PPC64_TLS
11349 || r_type == R_PPC64_TLSGD
11350 || r_type == R_PPC64_TLSLD))
11351 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11354 (*_bfd_error_handler)
11355 (!IS_PPC64_TLS_RELOC (r_type)
11356 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11357 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11360 (long) rel->r_offset,
11361 ppc64_elf_howto_table[r_type]->name,
11365 /* Ensure reloc mapping code below stays sane. */
11366 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
11367 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
11368 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
11369 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
11370 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
11371 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
11372 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
11373 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
11374 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
11375 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
11383 case R_PPC64_TOC16:
11384 case R_PPC64_TOC16_LO:
11385 case R_PPC64_TOC16_DS:
11386 case R_PPC64_TOC16_LO_DS:
11388 /* Check for toc tls entries. */
11392 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
11393 &local_syms, rel, input_bfd);
11399 tls_mask = *toc_tls;
11400 if (r_type == R_PPC64_TOC16_DS
11401 || r_type == R_PPC64_TOC16_LO_DS)
11404 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
11409 /* If we found a GD reloc pair, then we might be
11410 doing a GD->IE transition. */
11413 tls_gd = TLS_TPRELGD;
11414 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11417 else if (retval == 3)
11419 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11427 case R_PPC64_GOT_TPREL16_DS:
11428 case R_PPC64_GOT_TPREL16_LO_DS:
11430 && (tls_mask & TLS_TPREL) == 0)
11433 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
11435 insn |= 0x3c0d0000; /* addis 0,13,0 */
11436 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
11437 r_type = R_PPC64_TPREL16_HA;
11438 if (toc_symndx != 0)
11440 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11441 rel->r_addend = toc_addend;
11442 /* We changed the symbol. Start over in order to
11443 get h, sym, sec etc. right. */
11448 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11454 && (tls_mask & TLS_TPREL) == 0)
11456 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
11457 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
11460 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
11461 /* Was PPC64_TLS which sits on insn boundary, now
11462 PPC64_TPREL16_LO which is at low-order half-word. */
11463 rel->r_offset += d_offset;
11464 r_type = R_PPC64_TPREL16_LO;
11465 if (toc_symndx != 0)
11467 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
11468 rel->r_addend = toc_addend;
11469 /* We changed the symbol. Start over in order to
11470 get h, sym, sec etc. right. */
11475 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11479 case R_PPC64_GOT_TLSGD16_HI:
11480 case R_PPC64_GOT_TLSGD16_HA:
11481 tls_gd = TLS_TPRELGD;
11482 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11486 case R_PPC64_GOT_TLSLD16_HI:
11487 case R_PPC64_GOT_TLSLD16_HA:
11488 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11491 if ((tls_mask & tls_gd) != 0)
11492 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11493 + R_PPC64_GOT_TPREL16_DS);
11496 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11497 rel->r_offset -= d_offset;
11498 r_type = R_PPC64_NONE;
11500 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11504 case R_PPC64_GOT_TLSGD16:
11505 case R_PPC64_GOT_TLSGD16_LO:
11506 tls_gd = TLS_TPRELGD;
11507 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11511 case R_PPC64_GOT_TLSLD16:
11512 case R_PPC64_GOT_TLSLD16_LO:
11513 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11515 unsigned int insn1, insn2, insn3;
11519 offset = (bfd_vma) -1;
11520 /* If not using the newer R_PPC64_TLSGD/LD to mark
11521 __tls_get_addr calls, we must trust that the call
11522 stays with its arg setup insns, ie. that the next
11523 reloc is the __tls_get_addr call associated with
11524 the current reloc. Edit both insns. */
11525 if (input_section->has_tls_get_addr_call
11526 && rel + 1 < relend
11527 && branch_reloc_hash_match (input_bfd, rel + 1,
11528 htab->tls_get_addr,
11529 htab->tls_get_addr_fd))
11530 offset = rel[1].r_offset;
11531 if ((tls_mask & tls_gd) != 0)
11534 insn1 = bfd_get_32 (output_bfd,
11535 contents + rel->r_offset - d_offset);
11536 insn1 &= (1 << 26) - (1 << 2);
11537 insn1 |= 58 << 26; /* ld */
11538 insn2 = 0x7c636a14; /* add 3,3,13 */
11539 if (offset != (bfd_vma) -1)
11540 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11541 if ((tls_mask & TLS_EXPLICIT) == 0)
11542 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
11543 + R_PPC64_GOT_TPREL16_DS);
11545 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
11546 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11551 insn1 = 0x3c6d0000; /* addis 3,13,0 */
11552 insn2 = 0x38630000; /* addi 3,3,0 */
11555 /* Was an LD reloc. */
11557 sec = local_sections[toc_symndx];
11559 r_symndx < symtab_hdr->sh_info;
11561 if (local_sections[r_symndx] == sec)
11563 if (r_symndx >= symtab_hdr->sh_info)
11565 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
11567 rel->r_addend -= (local_syms[r_symndx].st_value
11568 + sec->output_offset
11569 + sec->output_section->vma);
11571 else if (toc_symndx != 0)
11573 r_symndx = toc_symndx;
11574 rel->r_addend = toc_addend;
11576 r_type = R_PPC64_TPREL16_HA;
11577 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11578 if (offset != (bfd_vma) -1)
11580 rel[1].r_info = ELF64_R_INFO (r_symndx,
11581 R_PPC64_TPREL16_LO);
11582 rel[1].r_offset = offset + d_offset;
11583 rel[1].r_addend = rel->r_addend;
11586 bfd_put_32 (output_bfd, insn1,
11587 contents + rel->r_offset - d_offset);
11588 if (offset != (bfd_vma) -1)
11590 insn3 = bfd_get_32 (output_bfd,
11591 contents + offset + 4);
11593 || insn3 == CROR_151515 || insn3 == CROR_313131)
11595 rel[1].r_offset += 4;
11596 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11599 bfd_put_32 (output_bfd, insn2, contents + offset);
11601 if ((tls_mask & tls_gd) == 0
11602 && (tls_gd == 0 || toc_symndx != 0))
11604 /* We changed the symbol. Start over in order
11605 to get h, sym, sec etc. right. */
11612 case R_PPC64_TLSGD:
11613 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
11615 unsigned int insn2, insn3;
11616 bfd_vma offset = rel->r_offset;
11618 if ((tls_mask & TLS_TPRELGD) != 0)
11621 r_type = R_PPC64_NONE;
11622 insn2 = 0x7c636a14; /* add 3,3,13 */
11627 if (toc_symndx != 0)
11629 r_symndx = toc_symndx;
11630 rel->r_addend = toc_addend;
11632 r_type = R_PPC64_TPREL16_LO;
11633 rel->r_offset = offset + d_offset;
11634 insn2 = 0x38630000; /* addi 3,3,0 */
11636 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11637 /* Zap the reloc on the _tls_get_addr call too. */
11638 BFD_ASSERT (offset == rel[1].r_offset);
11639 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11640 insn3 = bfd_get_32 (output_bfd,
11641 contents + offset + 4);
11643 || insn3 == CROR_151515 || insn3 == CROR_313131)
11645 rel->r_offset += 4;
11646 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11649 bfd_put_32 (output_bfd, insn2, contents + offset);
11650 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
11658 case R_PPC64_TLSLD:
11659 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
11661 unsigned int insn2, insn3;
11662 bfd_vma offset = rel->r_offset;
11665 sec = local_sections[toc_symndx];
11667 r_symndx < symtab_hdr->sh_info;
11669 if (local_sections[r_symndx] == sec)
11671 if (r_symndx >= symtab_hdr->sh_info)
11673 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
11675 rel->r_addend -= (local_syms[r_symndx].st_value
11676 + sec->output_offset
11677 + sec->output_section->vma);
11679 r_type = R_PPC64_TPREL16_LO;
11680 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11681 rel->r_offset = offset + d_offset;
11682 /* Zap the reloc on the _tls_get_addr call too. */
11683 BFD_ASSERT (offset == rel[1].r_offset);
11684 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
11685 insn2 = 0x38630000; /* addi 3,3,0 */
11686 insn3 = bfd_get_32 (output_bfd,
11687 contents + offset + 4);
11689 || insn3 == CROR_151515 || insn3 == CROR_313131)
11691 rel->r_offset += 4;
11692 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
11695 bfd_put_32 (output_bfd, insn2, contents + offset);
11701 case R_PPC64_DTPMOD64:
11702 if (rel + 1 < relend
11703 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
11704 && rel[1].r_offset == rel->r_offset + 8)
11706 if ((tls_mask & TLS_GD) == 0)
11708 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
11709 if ((tls_mask & TLS_TPRELGD) != 0)
11710 r_type = R_PPC64_TPREL64;
11713 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
11714 r_type = R_PPC64_NONE;
11716 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11721 if ((tls_mask & TLS_LD) == 0)
11723 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
11724 r_type = R_PPC64_NONE;
11725 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11730 case R_PPC64_TPREL64:
11731 if ((tls_mask & TLS_TPREL) == 0)
11733 r_type = R_PPC64_NONE;
11734 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
11739 /* Handle other relocations that tweak non-addend part of insn. */
11741 max_br_offset = 1 << 25;
11742 addend = rel->r_addend;
11748 /* Branch taken prediction relocations. */
11749 case R_PPC64_ADDR14_BRTAKEN:
11750 case R_PPC64_REL14_BRTAKEN:
11751 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
11754 /* Branch not taken prediction relocations. */
11755 case R_PPC64_ADDR14_BRNTAKEN:
11756 case R_PPC64_REL14_BRNTAKEN:
11757 insn |= bfd_get_32 (output_bfd,
11758 contents + rel->r_offset) & ~(0x01 << 21);
11761 case R_PPC64_REL14:
11762 max_br_offset = 1 << 15;
11765 case R_PPC64_REL24:
11766 /* Calls to functions with a different TOC, such as calls to
11767 shared objects, need to alter the TOC pointer. This is
11768 done using a linkage stub. A REL24 branching to these
11769 linkage stubs needs to be followed by a nop, as the nop
11770 will be replaced with an instruction to restore the TOC
11776 && h->oh->is_func_descriptor)
11777 fdh = ppc_follow_link (h->oh);
11779 && fdh->elf.plt.plist != NULL)
11781 && sec->output_section != NULL
11782 && sec->id <= htab->top_id
11783 && (htab->stub_group[sec->id].toc_off
11784 != htab->stub_group[input_section->id].toc_off))
11786 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
11787 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
11788 rel, htab)) != NULL
11789 && (stub_entry->stub_type == ppc_stub_plt_call
11790 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
11791 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
11793 bfd_boolean can_plt_call = FALSE;
11795 if (rel->r_offset + 8 <= input_section->size)
11798 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
11800 || nop == CROR_151515 || nop == CROR_313131)
11803 && (h == htab->tls_get_addr_fd
11804 || h == htab->tls_get_addr)
11805 && !htab->no_tls_get_addr_opt)
11807 /* Special stub used, leave nop alone. */
11810 bfd_put_32 (input_bfd, LD_R2_40R1,
11811 contents + rel->r_offset + 4);
11812 can_plt_call = TRUE;
11818 if (stub_entry->stub_type == ppc_stub_plt_call)
11820 /* If this is a plain branch rather than a branch
11821 and link, don't require a nop. However, don't
11822 allow tail calls in a shared library as they
11823 will result in r2 being corrupted. */
11825 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
11826 if (info->executable && (br & 1) == 0)
11827 can_plt_call = TRUE;
11832 && strcmp (h->elf.root.root.string,
11833 ".__libc_start_main") == 0)
11835 /* Allow crt1 branch to go via a toc adjusting stub. */
11836 can_plt_call = TRUE;
11840 if (strcmp (input_section->output_section->name,
11842 || strcmp (input_section->output_section->name,
11844 (*_bfd_error_handler)
11845 (_("%B(%A+0x%lx): automatic multiple TOCs "
11846 "not supported using your crt files; "
11847 "recompile with -mminimal-toc or upgrade gcc"),
11850 (long) rel->r_offset);
11852 (*_bfd_error_handler)
11853 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
11854 "does not allow automatic multiple TOCs; "
11855 "recompile with -mminimal-toc or "
11856 "-fno-optimize-sibling-calls, "
11857 "or make `%s' extern"),
11860 (long) rel->r_offset,
11863 bfd_set_error (bfd_error_bad_value);
11869 && stub_entry->stub_type == ppc_stub_plt_call)
11870 unresolved_reloc = FALSE;
11873 if (stub_entry == NULL
11874 && get_opd_info (sec) != NULL)
11876 /* The branch destination is the value of the opd entry. */
11877 bfd_vma off = (relocation + addend
11878 - sec->output_section->vma
11879 - sec->output_offset);
11880 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
11881 if (dest != (bfd_vma) -1)
11888 /* If the branch is out of reach we ought to have a long
11890 from = (rel->r_offset
11891 + input_section->output_offset
11892 + input_section->output_section->vma);
11894 if (stub_entry == NULL
11895 && (relocation + addend - from + max_br_offset
11896 >= 2 * max_br_offset)
11897 && r_type != R_PPC64_ADDR14_BRTAKEN
11898 && r_type != R_PPC64_ADDR14_BRNTAKEN)
11899 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
11902 if (stub_entry != NULL)
11904 /* Munge up the value and addend so that we call the stub
11905 rather than the procedure directly. */
11906 relocation = (stub_entry->stub_offset
11907 + stub_entry->stub_sec->output_offset
11908 + stub_entry->stub_sec->output_section->vma);
11916 /* Set 'a' bit. This is 0b00010 in BO field for branch
11917 on CR(BI) insns (BO == 001at or 011at), and 0b01000
11918 for branch on CTR insns (BO == 1a00t or 1a01t). */
11919 if ((insn & (0x14 << 21)) == (0x04 << 21))
11920 insn |= 0x02 << 21;
11921 else if ((insn & (0x14 << 21)) == (0x10 << 21))
11922 insn |= 0x08 << 21;
11928 /* Invert 'y' bit if not the default. */
11929 if ((bfd_signed_vma) (relocation + addend - from) < 0)
11930 insn ^= 0x01 << 21;
11933 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
11936 /* NOP out calls to undefined weak functions.
11937 We can thus call a weak function without first
11938 checking whether the function is defined. */
11940 && h->elf.root.type == bfd_link_hash_undefweak
11941 && h->elf.dynindx == -1
11942 && r_type == R_PPC64_REL24
11946 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
11952 /* Set `addend'. */
11957 (*_bfd_error_handler)
11958 (_("%B: unknown relocation type %d for symbol %s"),
11959 input_bfd, (int) r_type, sym_name);
11961 bfd_set_error (bfd_error_bad_value);
11967 case R_PPC64_TLSGD:
11968 case R_PPC64_TLSLD:
11969 case R_PPC64_GNU_VTINHERIT:
11970 case R_PPC64_GNU_VTENTRY:
11973 /* GOT16 relocations. Like an ADDR16 using the symbol's
11974 address in the GOT as relocation value instead of the
11975 symbol's value itself. Also, create a GOT entry for the
11976 symbol and put the symbol value there. */
11977 case R_PPC64_GOT_TLSGD16:
11978 case R_PPC64_GOT_TLSGD16_LO:
11979 case R_PPC64_GOT_TLSGD16_HI:
11980 case R_PPC64_GOT_TLSGD16_HA:
11981 tls_type = TLS_TLS | TLS_GD;
11984 case R_PPC64_GOT_TLSLD16:
11985 case R_PPC64_GOT_TLSLD16_LO:
11986 case R_PPC64_GOT_TLSLD16_HI:
11987 case R_PPC64_GOT_TLSLD16_HA:
11988 tls_type = TLS_TLS | TLS_LD;
11991 case R_PPC64_GOT_TPREL16_DS:
11992 case R_PPC64_GOT_TPREL16_LO_DS:
11993 case R_PPC64_GOT_TPREL16_HI:
11994 case R_PPC64_GOT_TPREL16_HA:
11995 tls_type = TLS_TLS | TLS_TPREL;
11998 case R_PPC64_GOT_DTPREL16_DS:
11999 case R_PPC64_GOT_DTPREL16_LO_DS:
12000 case R_PPC64_GOT_DTPREL16_HI:
12001 case R_PPC64_GOT_DTPREL16_HA:
12002 tls_type = TLS_TLS | TLS_DTPREL;
12005 case R_PPC64_GOT16:
12006 case R_PPC64_GOT16_LO:
12007 case R_PPC64_GOT16_HI:
12008 case R_PPC64_GOT16_HA:
12009 case R_PPC64_GOT16_DS:
12010 case R_PPC64_GOT16_LO_DS:
12013 /* Relocation is to the entry for this symbol in the global
12018 unsigned long indx = 0;
12019 struct got_entry *ent;
12021 if (tls_type == (TLS_TLS | TLS_LD)
12023 || !h->elf.def_dynamic))
12024 ent = ppc64_tlsld_got (input_bfd);
12030 bfd_boolean dyn = htab->elf.dynamic_sections_created;
12031 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
12034 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
12035 /* This is actually a static link, or it is a
12036 -Bsymbolic link and the symbol is defined
12037 locally, or the symbol was forced to be local
12038 because of a version file. */
12042 indx = h->elf.dynindx;
12043 unresolved_reloc = FALSE;
12045 ent = h->elf.got.glist;
12049 if (local_got_ents == NULL)
12051 ent = local_got_ents[r_symndx];
12054 for (; ent != NULL; ent = ent->next)
12055 if (ent->addend == orig_addend
12056 && ent->owner == input_bfd
12057 && ent->tls_type == tls_type)
12063 if (ent->is_indirect)
12064 ent = ent->got.ent;
12065 offp = &ent->got.offset;
12066 got = ppc64_elf_tdata (ent->owner)->got;
12070 /* The offset must always be a multiple of 8. We use the
12071 least significant bit to record whether we have already
12072 processed this entry. */
12074 if ((off & 1) != 0)
12078 /* Generate relocs for the dynamic linker, except in
12079 the case of TLSLD where we'll use one entry per
12087 ? h->elf.type == STT_GNU_IFUNC
12088 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
12089 if ((info->shared || indx != 0)
12091 || (tls_type == (TLS_TLS | TLS_LD)
12092 && !h->elf.def_dynamic)
12093 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12094 || h->elf.root.type != bfd_link_hash_undefweak))
12095 relgot = ppc64_elf_tdata (ent->owner)->relgot;
12097 relgot = htab->reliplt;
12098 if (relgot != NULL)
12100 outrel.r_offset = (got->output_section->vma
12101 + got->output_offset
12103 outrel.r_addend = addend;
12104 if (tls_type & (TLS_LD | TLS_GD))
12106 outrel.r_addend = 0;
12107 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
12108 if (tls_type == (TLS_TLS | TLS_GD))
12110 loc = relgot->contents;
12111 loc += (relgot->reloc_count++
12112 * sizeof (Elf64_External_Rela));
12113 bfd_elf64_swap_reloca_out (output_bfd,
12115 outrel.r_offset += 8;
12116 outrel.r_addend = addend;
12118 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12121 else if (tls_type == (TLS_TLS | TLS_DTPREL))
12122 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
12123 else if (tls_type == (TLS_TLS | TLS_TPREL))
12124 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
12125 else if (indx != 0)
12126 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
12130 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12132 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12134 /* Write the .got section contents for the sake
12136 loc = got->contents + off;
12137 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
12141 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
12143 outrel.r_addend += relocation;
12144 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
12145 outrel.r_addend -= htab->elf.tls_sec->vma;
12147 loc = relgot->contents;
12148 loc += (relgot->reloc_count++
12149 * sizeof (Elf64_External_Rela));
12150 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12153 /* Init the .got section contents here if we're not
12154 emitting a reloc. */
12157 relocation += addend;
12158 if (tls_type == (TLS_TLS | TLS_LD))
12160 else if (tls_type != 0)
12162 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
12163 if (tls_type == (TLS_TLS | TLS_TPREL))
12164 relocation += DTP_OFFSET - TP_OFFSET;
12166 if (tls_type == (TLS_TLS | TLS_GD))
12168 bfd_put_64 (output_bfd, relocation,
12169 got->contents + off + 8);
12174 bfd_put_64 (output_bfd, relocation,
12175 got->contents + off);
12179 if (off >= (bfd_vma) -2)
12182 relocation = got->output_section->vma + got->output_offset + off;
12183 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
12187 case R_PPC64_PLT16_HA:
12188 case R_PPC64_PLT16_HI:
12189 case R_PPC64_PLT16_LO:
12190 case R_PPC64_PLT32:
12191 case R_PPC64_PLT64:
12192 /* Relocation is to the entry for this symbol in the
12193 procedure linkage table. */
12195 /* Resolve a PLT reloc against a local symbol directly,
12196 without using the procedure linkage table. */
12200 /* It's possible that we didn't make a PLT entry for this
12201 symbol. This happens when statically linking PIC code,
12202 or when using -Bsymbolic. Go find a match if there is a
12204 if (htab->plt != NULL)
12206 struct plt_entry *ent;
12207 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
12208 if (ent->addend == orig_addend
12209 && ent->plt.offset != (bfd_vma) -1)
12211 relocation = (htab->plt->output_section->vma
12212 + htab->plt->output_offset
12213 + ent->plt.offset);
12214 unresolved_reloc = FALSE;
12220 /* Relocation value is TOC base. */
12221 relocation = TOCstart;
12223 relocation += htab->stub_group[input_section->id].toc_off;
12224 else if (unresolved_reloc)
12226 else if (sec != NULL && sec->id <= htab->top_id)
12227 relocation += htab->stub_group[sec->id].toc_off;
12229 unresolved_reloc = TRUE;
12232 /* TOC16 relocs. We want the offset relative to the TOC base,
12233 which is the address of the start of the TOC plus 0x8000.
12234 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12236 case R_PPC64_TOC16:
12237 case R_PPC64_TOC16_LO:
12238 case R_PPC64_TOC16_HI:
12239 case R_PPC64_TOC16_DS:
12240 case R_PPC64_TOC16_LO_DS:
12241 case R_PPC64_TOC16_HA:
12242 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
12245 /* Relocate against the beginning of the section. */
12246 case R_PPC64_SECTOFF:
12247 case R_PPC64_SECTOFF_LO:
12248 case R_PPC64_SECTOFF_HI:
12249 case R_PPC64_SECTOFF_DS:
12250 case R_PPC64_SECTOFF_LO_DS:
12251 case R_PPC64_SECTOFF_HA:
12253 addend -= sec->output_section->vma;
12256 case R_PPC64_REL16:
12257 case R_PPC64_REL16_LO:
12258 case R_PPC64_REL16_HI:
12259 case R_PPC64_REL16_HA:
12262 case R_PPC64_REL14:
12263 case R_PPC64_REL14_BRNTAKEN:
12264 case R_PPC64_REL14_BRTAKEN:
12265 case R_PPC64_REL24:
12268 case R_PPC64_TPREL16:
12269 case R_PPC64_TPREL16_LO:
12270 case R_PPC64_TPREL16_HI:
12271 case R_PPC64_TPREL16_HA:
12272 case R_PPC64_TPREL16_DS:
12273 case R_PPC64_TPREL16_LO_DS:
12274 case R_PPC64_TPREL16_HIGHER:
12275 case R_PPC64_TPREL16_HIGHERA:
12276 case R_PPC64_TPREL16_HIGHEST:
12277 case R_PPC64_TPREL16_HIGHESTA:
12279 && h->elf.root.type == bfd_link_hash_undefweak
12280 && h->elf.dynindx == -1)
12282 /* Make this relocation against an undefined weak symbol
12283 resolve to zero. This is really just a tweak, since
12284 code using weak externs ought to check that they are
12285 defined before using them. */
12286 bfd_byte *p = contents + rel->r_offset - d_offset;
12288 insn = bfd_get_32 (output_bfd, p);
12289 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
12291 bfd_put_32 (output_bfd, insn, p);
12294 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12296 /* The TPREL16 relocs shouldn't really be used in shared
12297 libs as they will result in DT_TEXTREL being set, but
12298 support them anyway. */
12302 case R_PPC64_DTPREL16:
12303 case R_PPC64_DTPREL16_LO:
12304 case R_PPC64_DTPREL16_HI:
12305 case R_PPC64_DTPREL16_HA:
12306 case R_PPC64_DTPREL16_DS:
12307 case R_PPC64_DTPREL16_LO_DS:
12308 case R_PPC64_DTPREL16_HIGHER:
12309 case R_PPC64_DTPREL16_HIGHERA:
12310 case R_PPC64_DTPREL16_HIGHEST:
12311 case R_PPC64_DTPREL16_HIGHESTA:
12312 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12315 case R_PPC64_DTPMOD64:
12320 case R_PPC64_TPREL64:
12321 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
12324 case R_PPC64_DTPREL64:
12325 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
12328 /* Relocations that may need to be propagated if this is a
12330 case R_PPC64_REL30:
12331 case R_PPC64_REL32:
12332 case R_PPC64_REL64:
12333 case R_PPC64_ADDR14:
12334 case R_PPC64_ADDR14_BRNTAKEN:
12335 case R_PPC64_ADDR14_BRTAKEN:
12336 case R_PPC64_ADDR16:
12337 case R_PPC64_ADDR16_DS:
12338 case R_PPC64_ADDR16_HA:
12339 case R_PPC64_ADDR16_HI:
12340 case R_PPC64_ADDR16_HIGHER:
12341 case R_PPC64_ADDR16_HIGHERA:
12342 case R_PPC64_ADDR16_HIGHEST:
12343 case R_PPC64_ADDR16_HIGHESTA:
12344 case R_PPC64_ADDR16_LO:
12345 case R_PPC64_ADDR16_LO_DS:
12346 case R_PPC64_ADDR24:
12347 case R_PPC64_ADDR32:
12348 case R_PPC64_ADDR64:
12349 case R_PPC64_UADDR16:
12350 case R_PPC64_UADDR32:
12351 case R_PPC64_UADDR64:
12353 if ((input_section->flags & SEC_ALLOC) == 0)
12356 if (NO_OPD_RELOCS && is_opd)
12361 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
12362 || h->elf.root.type != bfd_link_hash_undefweak)
12363 && (must_be_dyn_reloc (info, r_type)
12364 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
12365 || (ELIMINATE_COPY_RELOCS
12368 && h->elf.dynindx != -1
12369 && !h->elf.non_got_ref
12370 && !h->elf.def_regular)
12373 ? h->elf.type == STT_GNU_IFUNC
12374 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
12376 bfd_boolean skip, relocate;
12380 /* When generating a dynamic object, these relocations
12381 are copied into the output file to be resolved at run
12387 out_off = _bfd_elf_section_offset (output_bfd, info,
12388 input_section, rel->r_offset);
12389 if (out_off == (bfd_vma) -1)
12391 else if (out_off == (bfd_vma) -2)
12392 skip = TRUE, relocate = TRUE;
12393 out_off += (input_section->output_section->vma
12394 + input_section->output_offset);
12395 outrel.r_offset = out_off;
12396 outrel.r_addend = rel->r_addend;
12398 /* Optimize unaligned reloc use. */
12399 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
12400 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
12401 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
12402 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
12403 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
12404 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
12405 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
12406 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
12407 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
12410 memset (&outrel, 0, sizeof outrel);
12411 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
12413 && r_type != R_PPC64_TOC)
12414 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
12417 /* This symbol is local, or marked to become local,
12418 or this is an opd section reloc which must point
12419 at a local function. */
12420 outrel.r_addend += relocation;
12421 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
12423 if (is_opd && h != NULL)
12425 /* Lie about opd entries. This case occurs
12426 when building shared libraries and we
12427 reference a function in another shared
12428 lib. The same thing happens for a weak
12429 definition in an application that's
12430 overridden by a strong definition in a
12431 shared lib. (I believe this is a generic
12432 bug in binutils handling of weak syms.)
12433 In these cases we won't use the opd
12434 entry in this lib. */
12435 unresolved_reloc = FALSE;
12438 && r_type == R_PPC64_ADDR64
12440 ? h->elf.type == STT_GNU_IFUNC
12441 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
12442 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
12445 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
12447 /* We need to relocate .opd contents for ld.so.
12448 Prelink also wants simple and consistent rules
12449 for relocs. This make all RELATIVE relocs have
12450 *r_offset equal to r_addend. */
12459 ? h->elf.type == STT_GNU_IFUNC
12460 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
12462 (*_bfd_error_handler)
12463 (_("%B(%A+0x%lx): relocation %s for indirect "
12464 "function %s unsupported"),
12467 (long) rel->r_offset,
12468 ppc64_elf_howto_table[r_type]->name,
12472 else if (r_symndx == 0 || bfd_is_abs_section (sec))
12474 else if (sec == NULL || sec->owner == NULL)
12476 bfd_set_error (bfd_error_bad_value);
12483 osec = sec->output_section;
12484 indx = elf_section_data (osec)->dynindx;
12488 if ((osec->flags & SEC_READONLY) == 0
12489 && htab->elf.data_index_section != NULL)
12490 osec = htab->elf.data_index_section;
12492 osec = htab->elf.text_index_section;
12493 indx = elf_section_data (osec)->dynindx;
12495 BFD_ASSERT (indx != 0);
12497 /* We are turning this relocation into one
12498 against a section symbol, so subtract out
12499 the output section's address but not the
12500 offset of the input section in the output
12502 outrel.r_addend -= osec->vma;
12505 outrel.r_info = ELF64_R_INFO (indx, r_type);
12509 sreloc = elf_section_data (input_section)->sreloc;
12510 if (!htab->elf.dynamic_sections_created)
12511 sreloc = htab->reliplt;
12512 if (sreloc == NULL)
12515 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
12518 loc = sreloc->contents;
12519 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
12520 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
12522 /* If this reloc is against an external symbol, it will
12523 be computed at runtime, so there's no need to do
12524 anything now. However, for the sake of prelink ensure
12525 that the section contents are a known value. */
12528 unresolved_reloc = FALSE;
12529 /* The value chosen here is quite arbitrary as ld.so
12530 ignores section contents except for the special
12531 case of .opd where the contents might be accessed
12532 before relocation. Choose zero, as that won't
12533 cause reloc overflow. */
12536 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12537 to improve backward compatibility with older
12539 if (r_type == R_PPC64_ADDR64)
12540 addend = outrel.r_addend;
12541 /* Adjust pc_relative relocs to have zero in *r_offset. */
12542 else if (ppc64_elf_howto_table[r_type]->pc_relative)
12543 addend = (input_section->output_section->vma
12544 + input_section->output_offset
12551 case R_PPC64_GLOB_DAT:
12552 case R_PPC64_JMP_SLOT:
12553 case R_PPC64_JMP_IREL:
12554 case R_PPC64_RELATIVE:
12555 /* We shouldn't ever see these dynamic relocs in relocatable
12557 /* Fall through. */
12559 case R_PPC64_PLTGOT16:
12560 case R_PPC64_PLTGOT16_DS:
12561 case R_PPC64_PLTGOT16_HA:
12562 case R_PPC64_PLTGOT16_HI:
12563 case R_PPC64_PLTGOT16_LO:
12564 case R_PPC64_PLTGOT16_LO_DS:
12565 case R_PPC64_PLTREL32:
12566 case R_PPC64_PLTREL64:
12567 /* These ones haven't been implemented yet. */
12569 (*_bfd_error_handler)
12570 (_("%B: relocation %s is not supported for symbol %s."),
12572 ppc64_elf_howto_table[r_type]->name, sym_name);
12574 bfd_set_error (bfd_error_invalid_operation);
12579 /* Do any further special processing. */
12585 case R_PPC64_ADDR16_HA:
12586 case R_PPC64_REL16_HA:
12587 case R_PPC64_ADDR16_HIGHERA:
12588 case R_PPC64_ADDR16_HIGHESTA:
12589 case R_PPC64_TOC16_HA:
12590 case R_PPC64_SECTOFF_HA:
12591 case R_PPC64_TPREL16_HA:
12592 case R_PPC64_DTPREL16_HA:
12593 case R_PPC64_TPREL16_HIGHER:
12594 case R_PPC64_TPREL16_HIGHERA:
12595 case R_PPC64_TPREL16_HIGHEST:
12596 case R_PPC64_TPREL16_HIGHESTA:
12597 case R_PPC64_DTPREL16_HIGHER:
12598 case R_PPC64_DTPREL16_HIGHERA:
12599 case R_PPC64_DTPREL16_HIGHEST:
12600 case R_PPC64_DTPREL16_HIGHESTA:
12601 /* It's just possible that this symbol is a weak symbol
12602 that's not actually defined anywhere. In that case,
12603 'sec' would be NULL, and we should leave the symbol
12604 alone (it will be set to zero elsewhere in the link). */
12609 case R_PPC64_GOT16_HA:
12610 case R_PPC64_PLTGOT16_HA:
12611 case R_PPC64_PLT16_HA:
12612 case R_PPC64_GOT_TLSGD16_HA:
12613 case R_PPC64_GOT_TLSLD16_HA:
12614 case R_PPC64_GOT_TPREL16_HA:
12615 case R_PPC64_GOT_DTPREL16_HA:
12616 /* Add 0x10000 if sign bit in 0:15 is set.
12617 Bits 0:15 are not used. */
12621 case R_PPC64_ADDR16_DS:
12622 case R_PPC64_ADDR16_LO_DS:
12623 case R_PPC64_GOT16_DS:
12624 case R_PPC64_GOT16_LO_DS:
12625 case R_PPC64_PLT16_LO_DS:
12626 case R_PPC64_SECTOFF_DS:
12627 case R_PPC64_SECTOFF_LO_DS:
12628 case R_PPC64_TOC16_DS:
12629 case R_PPC64_TOC16_LO_DS:
12630 case R_PPC64_PLTGOT16_DS:
12631 case R_PPC64_PLTGOT16_LO_DS:
12632 case R_PPC64_GOT_TPREL16_DS:
12633 case R_PPC64_GOT_TPREL16_LO_DS:
12634 case R_PPC64_GOT_DTPREL16_DS:
12635 case R_PPC64_GOT_DTPREL16_LO_DS:
12636 case R_PPC64_TPREL16_DS:
12637 case R_PPC64_TPREL16_LO_DS:
12638 case R_PPC64_DTPREL16_DS:
12639 case R_PPC64_DTPREL16_LO_DS:
12640 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
12642 /* If this reloc is against an lq insn, then the value must be
12643 a multiple of 16. This is somewhat of a hack, but the
12644 "correct" way to do this by defining _DQ forms of all the
12645 _DS relocs bloats all reloc switches in this file. It
12646 doesn't seem to make much sense to use any of these relocs
12647 in data, so testing the insn should be safe. */
12648 if ((insn & (0x3f << 26)) == (56u << 26))
12650 if (((relocation + addend) & mask) != 0)
12652 (*_bfd_error_handler)
12653 (_("%B: error: relocation %s not a multiple of %d"),
12655 ppc64_elf_howto_table[r_type]->name,
12657 bfd_set_error (bfd_error_bad_value);
12664 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
12665 because such sections are not SEC_ALLOC and thus ld.so will
12666 not process them. */
12667 if (unresolved_reloc
12668 && !((input_section->flags & SEC_DEBUGGING) != 0
12669 && h->elf.def_dynamic))
12671 (*_bfd_error_handler)
12672 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
12675 (long) rel->r_offset,
12676 ppc64_elf_howto_table[(int) r_type]->name,
12677 h->elf.root.root.string);
12681 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
12689 if (r != bfd_reloc_ok)
12691 if (sym_name == NULL)
12692 sym_name = "(null)";
12693 if (r == bfd_reloc_overflow)
12698 && h->elf.root.type == bfd_link_hash_undefweak
12699 && ppc64_elf_howto_table[r_type]->pc_relative)
12701 /* Assume this is a call protected by other code that
12702 detects the symbol is undefined. If this is the case,
12703 we can safely ignore the overflow. If not, the
12704 program is hosed anyway, and a little warning isn't
12710 if (!((*info->callbacks->reloc_overflow)
12711 (info, (h ? &h->elf.root : NULL), sym_name,
12712 ppc64_elf_howto_table[r_type]->name,
12713 orig_addend, input_bfd, input_section, rel->r_offset)))
12718 (*_bfd_error_handler)
12719 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
12722 (long) rel->r_offset,
12723 ppc64_elf_howto_table[r_type]->name,
12731 /* If we're emitting relocations, then shortly after this function
12732 returns, reloc offsets and addends for this section will be
12733 adjusted. Worse, reloc symbol indices will be for the output
12734 file rather than the input. Save a copy of the relocs for
12735 opd_entry_value. */
12736 if (is_opd && (info->emitrelocations || info->relocatable))
12739 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
12740 rel = bfd_alloc (input_bfd, amt);
12741 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
12742 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
12745 memcpy (rel, relocs, amt);
12750 /* Adjust the value of any local symbols in opd sections. */
12753 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
12754 const char *name ATTRIBUTE_UNUSED,
12755 Elf_Internal_Sym *elfsym,
12756 asection *input_sec,
12757 struct elf_link_hash_entry *h)
12759 struct _opd_sec_data *opd;
12766 opd = get_opd_info (input_sec);
12767 if (opd == NULL || opd->adjust == NULL)
12770 value = elfsym->st_value - input_sec->output_offset;
12771 if (!info->relocatable)
12772 value -= input_sec->output_section->vma;
12774 adjust = opd->adjust[value / 8];
12778 elfsym->st_value += adjust;
12782 /* Finish up dynamic symbol handling. We set the contents of various
12783 dynamic sections here. */
12786 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
12787 struct bfd_link_info *info,
12788 struct elf_link_hash_entry *h,
12789 Elf_Internal_Sym *sym)
12791 struct ppc_link_hash_table *htab;
12792 struct plt_entry *ent;
12793 Elf_Internal_Rela rela;
12796 htab = ppc_hash_table (info);
12800 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
12801 if (ent->plt.offset != (bfd_vma) -1)
12803 /* This symbol has an entry in the procedure linkage
12804 table. Set it up. */
12805 if (!htab->elf.dynamic_sections_created
12806 || h->dynindx == -1)
12808 BFD_ASSERT (h->type == STT_GNU_IFUNC
12810 && (h->root.type == bfd_link_hash_defined
12811 || h->root.type == bfd_link_hash_defweak));
12812 rela.r_offset = (htab->iplt->output_section->vma
12813 + htab->iplt->output_offset
12814 + ent->plt.offset);
12815 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
12816 rela.r_addend = (h->root.u.def.value
12817 + h->root.u.def.section->output_offset
12818 + h->root.u.def.section->output_section->vma
12820 loc = (htab->reliplt->contents
12821 + (htab->reliplt->reloc_count++
12822 * sizeof (Elf64_External_Rela)));
12826 rela.r_offset = (htab->plt->output_section->vma
12827 + htab->plt->output_offset
12828 + ent->plt.offset);
12829 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
12830 rela.r_addend = ent->addend;
12831 loc = (htab->relplt->contents
12832 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
12833 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
12835 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
12840 /* This symbol needs a copy reloc. Set it up. */
12842 if (h->dynindx == -1
12843 || (h->root.type != bfd_link_hash_defined
12844 && h->root.type != bfd_link_hash_defweak)
12845 || htab->relbss == NULL)
12848 rela.r_offset = (h->root.u.def.value
12849 + h->root.u.def.section->output_section->vma
12850 + h->root.u.def.section->output_offset);
12851 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
12853 loc = htab->relbss->contents;
12854 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
12855 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
12858 /* Mark some specially defined symbols as absolute. */
12859 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
12860 sym->st_shndx = SHN_ABS;
12865 /* Used to decide how to sort relocs in an optimal manner for the
12866 dynamic linker, before writing them out. */
12868 static enum elf_reloc_type_class
12869 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
12871 enum elf_ppc64_reloc_type r_type;
12873 r_type = ELF64_R_TYPE (rela->r_info);
12876 case R_PPC64_RELATIVE:
12877 return reloc_class_relative;
12878 case R_PPC64_JMP_SLOT:
12879 return reloc_class_plt;
12881 return reloc_class_copy;
12883 return reloc_class_normal;
12887 /* Finish up the dynamic sections. */
12890 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
12891 struct bfd_link_info *info)
12893 struct ppc_link_hash_table *htab;
12897 htab = ppc_hash_table (info);
12901 dynobj = htab->elf.dynobj;
12902 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
12904 if (htab->elf.dynamic_sections_created)
12906 Elf64_External_Dyn *dyncon, *dynconend;
12908 if (sdyn == NULL || htab->got == NULL)
12911 dyncon = (Elf64_External_Dyn *) sdyn->contents;
12912 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
12913 for (; dyncon < dynconend; dyncon++)
12915 Elf_Internal_Dyn dyn;
12918 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
12925 case DT_PPC64_GLINK:
12927 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
12928 /* We stupidly defined DT_PPC64_GLINK to be the start
12929 of glink rather than the first entry point, which is
12930 what ld.so needs, and now have a bigger stub to
12931 support automatic multiple TOCs. */
12932 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
12936 s = bfd_get_section_by_name (output_bfd, ".opd");
12939 dyn.d_un.d_ptr = s->vma;
12942 case DT_PPC64_OPDSZ:
12943 s = bfd_get_section_by_name (output_bfd, ".opd");
12946 dyn.d_un.d_val = s->size;
12951 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
12956 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
12960 dyn.d_un.d_val = htab->relplt->size;
12964 /* Don't count procedure linkage table relocs in the
12965 overall reloc count. */
12969 dyn.d_un.d_val -= s->size;
12973 /* We may not be using the standard ELF linker script.
12974 If .rela.plt is the first .rela section, we adjust
12975 DT_RELA to not include it. */
12979 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
12981 dyn.d_un.d_ptr += s->size;
12985 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
12989 if (htab->got != NULL && htab->got->size != 0)
12991 /* Fill in the first entry in the global offset table.
12992 We use it to hold the link-time TOCbase. */
12993 bfd_put_64 (output_bfd,
12994 elf_gp (output_bfd) + TOC_BASE_OFF,
12995 htab->got->contents);
12997 /* Set .got entry size. */
12998 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
13001 if (htab->plt != NULL && htab->plt->size != 0)
13003 /* Set .plt entry size. */
13004 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
13008 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13009 brlt ourselves if emitrelocations. */
13010 if (htab->brlt != NULL
13011 && htab->brlt->reloc_count != 0
13012 && !_bfd_elf_link_output_relocs (output_bfd,
13014 &elf_section_data (htab->brlt)->rel_hdr,
13015 elf_section_data (htab->brlt)->relocs,
13019 if (htab->glink != NULL
13020 && htab->glink->reloc_count != 0
13021 && !_bfd_elf_link_output_relocs (output_bfd,
13023 &elf_section_data (htab->glink)->rel_hdr,
13024 elf_section_data (htab->glink)->relocs,
13028 /* We need to handle writing out multiple GOT sections ourselves,
13029 since we didn't add them to DYNOBJ. We know dynobj is the first
13031 while ((dynobj = dynobj->link_next) != NULL)
13035 if (!is_ppc64_elf (dynobj))
13038 s = ppc64_elf_tdata (dynobj)->got;
13041 && s->output_section != bfd_abs_section_ptr
13042 && !bfd_set_section_contents (output_bfd, s->output_section,
13043 s->contents, s->output_offset,
13046 s = ppc64_elf_tdata (dynobj)->relgot;
13049 && s->output_section != bfd_abs_section_ptr
13050 && !bfd_set_section_contents (output_bfd, s->output_section,
13051 s->contents, s->output_offset,
13059 #include "elf64-target.h"