1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 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 <amodra@bigpond.net.au>
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 2 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. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
33 #include "elf/ppc64.h"
34 #include "elf64-ppc.h"
36 static bfd_reloc_status_type ppc64_elf_ha_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38 static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_toc_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc64_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
57 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58 #define TARGET_LITTLE_NAME "elf64-powerpcle"
59 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60 #define TARGET_BIG_NAME "elf64-powerpc"
61 #define ELF_ARCH bfd_arch_powerpc
62 #define ELF_MACHINE_CODE EM_PPC64
63 #define ELF_MAXPAGESIZE 0x10000
64 #define elf_info_to_howto ppc64_elf_info_to_howto
66 #define elf_backend_want_got_sym 0
67 #define elf_backend_want_plt_sym 0
68 #define elf_backend_plt_alignment 3
69 #define elf_backend_plt_not_loaded 1
70 #define elf_backend_got_header_size 8
71 #define elf_backend_can_gc_sections 1
72 #define elf_backend_can_refcount 1
73 #define elf_backend_rela_normal 1
75 #define bfd_elf64_mkobject ppc64_elf_mkobject
76 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
77 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
78 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
79 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
80 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
81 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
83 #define elf_backend_object_p ppc64_elf_object_p
84 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
85 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
86 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
87 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
88 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
89 #define elf_backend_check_directives ppc64_elf_check_directives
90 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
91 #define elf_backend_check_relocs ppc64_elf_check_relocs
92 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
93 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
94 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
95 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
96 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
97 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
98 #define elf_backend_relocate_section ppc64_elf_relocate_section
99 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
100 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
101 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
102 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
103 #define elf_backend_special_sections ppc64_elf_special_sections
105 /* The name of the dynamic interpreter. This is put in the .interp
107 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
109 /* The size in bytes of an entry in the procedure linkage table. */
110 #define PLT_ENTRY_SIZE 24
112 /* The initial size of the plt reserved for the dynamic linker. */
113 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
115 /* TOC base pointers offset from start of TOC. */
116 #define TOC_BASE_OFF 0x8000
118 /* Offset of tp and dtp pointers from start of TLS block. */
119 #define TP_OFFSET 0x7000
120 #define DTP_OFFSET 0x8000
122 /* .plt call stub instructions. The normal stub is like this, but
123 sometimes the .plt entry crosses a 64k boundary and we need to
124 insert an addis to adjust r12. */
125 #define PLT_CALL_STUB_SIZE (7*4)
126 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
127 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
128 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
129 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
130 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
131 /* ld %r11,xxx+16@l(%r12) */
132 #define BCTR 0x4e800420 /* bctr */
135 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
136 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
138 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
140 /* glink call stub instructions. We enter with the index in R0, and the
141 address of glink entry in CTR. From that, we can calculate PLT0. */
142 #define GLINK_CALL_STUB_SIZE (16*4)
143 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
144 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
145 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
146 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
147 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
148 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
149 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
150 /* sub %r12,%r12,%r11 */
151 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
152 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
153 /* ld %r11,xxx@l(%r12) */
154 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
157 /* ld %r11,16(%r12) */
161 #define NOP 0x60000000
163 /* Some other nops. */
164 #define CROR_151515 0x4def7b82
165 #define CROR_313131 0x4ffffb82
167 /* .glink entries for the first 32k functions are two instructions. */
168 #define LI_R0_0 0x38000000 /* li %r0,0 */
169 #define B_DOT 0x48000000 /* b . */
171 /* After that, we need two instructions to load the index, followed by
173 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
174 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
176 /* Instructions used by the save and restore reg functions. */
177 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
178 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
179 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
180 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
181 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
182 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
183 #define LI_R12_0 0x39800000 /* li %r12,0 */
184 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
185 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
186 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
187 #define BLR 0x4e800020 /* blr */
189 /* Since .opd is an array of descriptors and each entry will end up
190 with identical R_PPC64_RELATIVE relocs, there is really no need to
191 propagate .opd relocs; The dynamic linker should be taught to
192 relocate .opd without reloc entries. */
193 #ifndef NO_OPD_RELOCS
194 #define NO_OPD_RELOCS 0
197 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
199 /* Relocation HOWTO's. */
200 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
202 static reloc_howto_type ppc64_elf_howto_raw[] = {
203 /* This reloc does nothing. */
204 HOWTO (R_PPC64_NONE, /* type */
206 2, /* size (0 = byte, 1 = short, 2 = long) */
208 FALSE, /* pc_relative */
210 complain_overflow_dont, /* complain_on_overflow */
211 bfd_elf_generic_reloc, /* special_function */
212 "R_PPC64_NONE", /* name */
213 FALSE, /* partial_inplace */
216 FALSE), /* pcrel_offset */
218 /* A standard 32 bit relocation. */
219 HOWTO (R_PPC64_ADDR32, /* type */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
223 FALSE, /* pc_relative */
225 complain_overflow_bitfield, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC64_ADDR32", /* name */
228 FALSE, /* partial_inplace */
230 0xffffffff, /* dst_mask */
231 FALSE), /* pcrel_offset */
233 /* An absolute 26 bit branch; the lower two bits must be zero.
234 FIXME: we don't check that, we just clear them. */
235 HOWTO (R_PPC64_ADDR24, /* type */
237 2, /* size (0 = byte, 1 = short, 2 = long) */
239 FALSE, /* pc_relative */
241 complain_overflow_bitfield, /* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_PPC64_ADDR24", /* name */
244 FALSE, /* partial_inplace */
246 0x03fffffc, /* dst_mask */
247 FALSE), /* pcrel_offset */
249 /* A standard 16 bit relocation. */
250 HOWTO (R_PPC64_ADDR16, /* type */
252 1, /* 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_ADDR16", /* name */
259 FALSE, /* partial_inplace */
261 0xffff, /* dst_mask */
262 FALSE), /* pcrel_offset */
264 /* A 16 bit relocation without overflow. */
265 HOWTO (R_PPC64_ADDR16_LO, /* type */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
269 FALSE, /* pc_relative */
271 complain_overflow_dont,/* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC64_ADDR16_LO", /* name */
274 FALSE, /* partial_inplace */
276 0xffff, /* dst_mask */
277 FALSE), /* pcrel_offset */
279 /* Bits 16-31 of an address. */
280 HOWTO (R_PPC64_ADDR16_HI, /* 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_HI", /* name */
289 FALSE, /* partial_inplace */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
294 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
295 bits, treated as a signed number, is negative. */
296 HOWTO (R_PPC64_ADDR16_HA, /* type */
298 1, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE, /* pc_relative */
302 complain_overflow_dont, /* complain_on_overflow */
303 ppc64_elf_ha_reloc, /* special_function */
304 "R_PPC64_ADDR16_HA", /* name */
305 FALSE, /* partial_inplace */
307 0xffff, /* dst_mask */
308 FALSE), /* pcrel_offset */
310 /* An absolute 16 bit branch; the lower two bits must be zero.
311 FIXME: we don't check that, we just clear them. */
312 HOWTO (R_PPC64_ADDR14, /* type */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
316 FALSE, /* pc_relative */
318 complain_overflow_bitfield, /* complain_on_overflow */
319 ppc64_elf_branch_reloc, /* special_function */
320 "R_PPC64_ADDR14", /* name */
321 FALSE, /* partial_inplace */
323 0x0000fffc, /* dst_mask */
324 FALSE), /* pcrel_offset */
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is expected to be taken. The lower two
328 bits must be zero. */
329 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE, /* pc_relative */
335 complain_overflow_bitfield, /* complain_on_overflow */
336 ppc64_elf_brtaken_reloc, /* special_function */
337 "R_PPC64_ADDR14_BRTAKEN",/* name */
338 FALSE, /* partial_inplace */
340 0x0000fffc, /* dst_mask */
341 FALSE), /* pcrel_offset */
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is not expected to be taken. The lower
345 two bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE, /* pc_relative */
352 complain_overflow_bitfield, /* complain_on_overflow */
353 ppc64_elf_brtaken_reloc, /* special_function */
354 "R_PPC64_ADDR14_BRNTAKEN",/* name */
355 FALSE, /* partial_inplace */
357 0x0000fffc, /* dst_mask */
358 FALSE), /* pcrel_offset */
360 /* A relative 26 bit branch; the lower two bits must be zero. */
361 HOWTO (R_PPC64_REL24, /* type */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
365 TRUE, /* pc_relative */
367 complain_overflow_signed, /* complain_on_overflow */
368 ppc64_elf_branch_reloc, /* special_function */
369 "R_PPC64_REL24", /* name */
370 FALSE, /* partial_inplace */
372 0x03fffffc, /* dst_mask */
373 TRUE), /* pcrel_offset */
375 /* A relative 16 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL14, /* 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_REL14", /* name */
385 FALSE, /* partial_inplace */
387 0x0000fffc, /* dst_mask */
388 TRUE), /* pcrel_offset */
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is expected to be taken. The lower two bits must be
393 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE, /* pc_relative */
399 complain_overflow_signed, /* complain_on_overflow */
400 ppc64_elf_brtaken_reloc, /* special_function */
401 "R_PPC64_REL14_BRTAKEN", /* name */
402 FALSE, /* partial_inplace */
404 0x0000fffc, /* dst_mask */
405 TRUE), /* pcrel_offset */
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is not expected to be taken. The lower two bits must
410 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
414 TRUE, /* pc_relative */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc64_elf_brtaken_reloc, /* special_function */
418 "R_PPC64_REL14_BRNTAKEN",/* name */
419 FALSE, /* partial_inplace */
421 0x0000fffc, /* dst_mask */
422 TRUE), /* pcrel_offset */
424 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
426 HOWTO (R_PPC64_GOT16, /* type */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
430 FALSE, /* pc_relative */
432 complain_overflow_signed, /* complain_on_overflow */
433 ppc64_elf_unhandled_reloc, /* special_function */
434 "R_PPC64_GOT16", /* name */
435 FALSE, /* partial_inplace */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
440 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
442 HOWTO (R_PPC64_GOT16_LO, /* type */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
446 FALSE, /* pc_relative */
448 complain_overflow_dont, /* complain_on_overflow */
449 ppc64_elf_unhandled_reloc, /* special_function */
450 "R_PPC64_GOT16_LO", /* name */
451 FALSE, /* partial_inplace */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
456 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
458 HOWTO (R_PPC64_GOT16_HI, /* type */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
462 FALSE, /* pc_relative */
464 complain_overflow_dont,/* complain_on_overflow */
465 ppc64_elf_unhandled_reloc, /* special_function */
466 "R_PPC64_GOT16_HI", /* name */
467 FALSE, /* partial_inplace */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
472 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
474 HOWTO (R_PPC64_GOT16_HA, /* type */
476 1, /* size (0 = byte, 1 = short, 2 = long) */
478 FALSE, /* pc_relative */
480 complain_overflow_dont,/* complain_on_overflow */
481 ppc64_elf_unhandled_reloc, /* special_function */
482 "R_PPC64_GOT16_HA", /* name */
483 FALSE, /* partial_inplace */
485 0xffff, /* dst_mask */
486 FALSE), /* pcrel_offset */
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC64_COPY, /* type */
495 0, /* this one is variable size */
497 FALSE, /* pc_relative */
499 complain_overflow_dont, /* complain_on_overflow */
500 ppc64_elf_unhandled_reloc, /* special_function */
501 "R_PPC64_COPY", /* name */
502 FALSE, /* partial_inplace */
505 FALSE), /* pcrel_offset */
507 /* Like R_PPC64_ADDR64, but used when setting global offset table
509 HOWTO (R_PPC64_GLOB_DAT, /* type */
511 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
513 FALSE, /* pc_relative */
515 complain_overflow_dont, /* complain_on_overflow */
516 ppc64_elf_unhandled_reloc, /* special_function */
517 "R_PPC64_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
520 ONES (64), /* dst_mask */
521 FALSE), /* pcrel_offset */
523 /* Created by the link editor. Marks a procedure linkage table
524 entry for a symbol. */
525 HOWTO (R_PPC64_JMP_SLOT, /* type */
527 0, /* size (0 = byte, 1 = short, 2 = long) */
529 FALSE, /* pc_relative */
531 complain_overflow_dont, /* complain_on_overflow */
532 ppc64_elf_unhandled_reloc, /* special_function */
533 "R_PPC64_JMP_SLOT", /* name */
534 FALSE, /* partial_inplace */
537 FALSE), /* pcrel_offset */
539 /* Used only by the dynamic linker. When the object is run, this
540 doubleword64 is set to the load address of the object, plus the
542 HOWTO (R_PPC64_RELATIVE, /* type */
544 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
546 FALSE, /* pc_relative */
548 complain_overflow_dont, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 "R_PPC64_RELATIVE", /* name */
551 FALSE, /* partial_inplace */
553 ONES (64), /* dst_mask */
554 FALSE), /* pcrel_offset */
556 /* Like R_PPC64_ADDR32, but may be unaligned. */
557 HOWTO (R_PPC64_UADDR32, /* type */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
561 FALSE, /* pc_relative */
563 complain_overflow_bitfield, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC64_UADDR32", /* name */
566 FALSE, /* partial_inplace */
568 0xffffffff, /* dst_mask */
569 FALSE), /* pcrel_offset */
571 /* Like R_PPC64_ADDR16, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR16, /* type */
574 1, /* 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_UADDR16", /* name */
581 FALSE, /* partial_inplace */
583 0xffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
586 /* 32-bit PC relative. */
587 HOWTO (R_PPC64_REL32, /* type */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
591 TRUE, /* pc_relative */
593 /* FIXME: Verify. Was complain_overflow_bitfield. */
594 complain_overflow_signed, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC64_REL32", /* name */
597 FALSE, /* partial_inplace */
599 0xffffffff, /* dst_mask */
600 TRUE), /* pcrel_offset */
602 /* 32-bit relocation to the symbol's procedure linkage table. */
603 HOWTO (R_PPC64_PLT32, /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 FALSE, /* pc_relative */
609 complain_overflow_bitfield, /* complain_on_overflow */
610 ppc64_elf_unhandled_reloc, /* special_function */
611 "R_PPC64_PLT32", /* name */
612 FALSE, /* partial_inplace */
614 0xffffffff, /* dst_mask */
615 FALSE), /* pcrel_offset */
617 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
618 FIXME: R_PPC64_PLTREL32 not supported. */
619 HOWTO (R_PPC64_PLTREL32, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 TRUE, /* pc_relative */
625 complain_overflow_signed, /* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_PPC64_PLTREL32", /* name */
628 FALSE, /* partial_inplace */
630 0xffffffff, /* dst_mask */
631 TRUE), /* pcrel_offset */
633 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
635 HOWTO (R_PPC64_PLT16_LO, /* type */
637 1, /* size (0 = byte, 1 = short, 2 = long) */
639 FALSE, /* pc_relative */
641 complain_overflow_dont, /* complain_on_overflow */
642 ppc64_elf_unhandled_reloc, /* special_function */
643 "R_PPC64_PLT16_LO", /* name */
644 FALSE, /* partial_inplace */
646 0xffff, /* dst_mask */
647 FALSE), /* pcrel_offset */
649 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
651 HOWTO (R_PPC64_PLT16_HI, /* type */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE, /* pc_relative */
657 complain_overflow_dont, /* complain_on_overflow */
658 ppc64_elf_unhandled_reloc, /* special_function */
659 "R_PPC64_PLT16_HI", /* name */
660 FALSE, /* partial_inplace */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
665 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
667 HOWTO (R_PPC64_PLT16_HA, /* type */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_dont, /* complain_on_overflow */
674 ppc64_elf_unhandled_reloc, /* special_function */
675 "R_PPC64_PLT16_HA", /* name */
676 FALSE, /* partial_inplace */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
681 /* 16-bit section relative relocation. */
682 HOWTO (R_PPC64_SECTOFF, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE, /* pc_relative */
688 complain_overflow_bitfield, /* complain_on_overflow */
689 ppc64_elf_sectoff_reloc, /* special_function */
690 "R_PPC64_SECTOFF", /* name */
691 FALSE, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
696 /* Like R_PPC64_SECTOFF, but no overflow warning. */
697 HOWTO (R_PPC64_SECTOFF_LO, /* type */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
701 FALSE, /* pc_relative */
703 complain_overflow_dont, /* complain_on_overflow */
704 ppc64_elf_sectoff_reloc, /* special_function */
705 "R_PPC64_SECTOFF_LO", /* name */
706 FALSE, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE), /* pcrel_offset */
711 /* 16-bit upper half section relative relocation. */
712 HOWTO (R_PPC64_SECTOFF_HI, /* 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_HI", /* name */
721 FALSE, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
726 /* 16-bit upper half adjusted section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HA, /* 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_ha_reloc, /* special_function */
735 "R_PPC64_SECTOFF_HA", /* name */
736 FALSE, /* partial_inplace */
738 0xffff, /* dst_mask */
739 FALSE), /* pcrel_offset */
741 /* Like R_PPC64_REL24 without touching the two least significant bits. */
742 HOWTO (R_PPC64_REL30, /* type */
744 2, /* size (0 = byte, 1 = short, 2 = long) */
746 TRUE, /* pc_relative */
748 complain_overflow_dont, /* complain_on_overflow */
749 bfd_elf_generic_reloc, /* special_function */
750 "R_PPC64_REL30", /* name */
751 FALSE, /* partial_inplace */
753 0xfffffffc, /* dst_mask */
754 TRUE), /* pcrel_offset */
756 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
758 /* A standard 64-bit relocation. */
759 HOWTO (R_PPC64_ADDR64, /* type */
761 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
763 FALSE, /* pc_relative */
765 complain_overflow_dont, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_PPC64_ADDR64", /* name */
768 FALSE, /* partial_inplace */
770 ONES (64), /* dst_mask */
771 FALSE), /* pcrel_offset */
773 /* The bits 32-47 of an address. */
774 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
776 1, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE, /* pc_relative */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC64_ADDR16_HIGHER", /* name */
783 FALSE, /* partial_inplace */
785 0xffff, /* dst_mask */
786 FALSE), /* pcrel_offset */
788 /* The bits 32-47 of an address, plus 1 if the contents of the low
789 16 bits, treated as a signed number, is negative. */
790 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE, /* pc_relative */
796 complain_overflow_dont, /* complain_on_overflow */
797 ppc64_elf_ha_reloc, /* special_function */
798 "R_PPC64_ADDR16_HIGHERA", /* name */
799 FALSE, /* partial_inplace */
801 0xffff, /* dst_mask */
802 FALSE), /* pcrel_offset */
804 /* The bits 48-63 of an address. */
805 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
809 FALSE, /* pc_relative */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_PPC64_ADDR16_HIGHEST", /* name */
814 FALSE, /* partial_inplace */
816 0xffff, /* dst_mask */
817 FALSE), /* pcrel_offset */
819 /* The bits 48-63 of an address, plus 1 if the contents of the low
820 16 bits, treated as a signed number, is negative. */
821 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
823 1, /* size (0 = byte, 1 = short, 2 = long) */
825 FALSE, /* pc_relative */
827 complain_overflow_dont, /* complain_on_overflow */
828 ppc64_elf_ha_reloc, /* special_function */
829 "R_PPC64_ADDR16_HIGHESTA", /* name */
830 FALSE, /* partial_inplace */
832 0xffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
835 /* Like ADDR64, but may be unaligned. */
836 HOWTO (R_PPC64_UADDR64, /* type */
838 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
840 FALSE, /* pc_relative */
842 complain_overflow_dont, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_PPC64_UADDR64", /* name */
845 FALSE, /* partial_inplace */
847 ONES (64), /* dst_mask */
848 FALSE), /* pcrel_offset */
850 /* 64-bit relative relocation. */
851 HOWTO (R_PPC64_REL64, /* type */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
855 TRUE, /* pc_relative */
857 complain_overflow_dont, /* complain_on_overflow */
858 bfd_elf_generic_reloc, /* special_function */
859 "R_PPC64_REL64", /* name */
860 FALSE, /* partial_inplace */
862 ONES (64), /* dst_mask */
863 TRUE), /* pcrel_offset */
865 /* 64-bit relocation to the symbol's procedure linkage table. */
866 HOWTO (R_PPC64_PLT64, /* type */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
870 FALSE, /* pc_relative */
872 complain_overflow_dont, /* complain_on_overflow */
873 ppc64_elf_unhandled_reloc, /* special_function */
874 "R_PPC64_PLT64", /* name */
875 FALSE, /* partial_inplace */
877 ONES (64), /* dst_mask */
878 FALSE), /* pcrel_offset */
880 /* 64-bit PC relative relocation to the symbol's procedure linkage
882 /* FIXME: R_PPC64_PLTREL64 not supported. */
883 HOWTO (R_PPC64_PLTREL64, /* type */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
887 TRUE, /* pc_relative */
889 complain_overflow_dont, /* complain_on_overflow */
890 ppc64_elf_unhandled_reloc, /* special_function */
891 "R_PPC64_PLTREL64", /* name */
892 FALSE, /* partial_inplace */
894 ONES (64), /* dst_mask */
895 TRUE), /* pcrel_offset */
897 /* 16 bit TOC-relative relocation. */
899 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
900 HOWTO (R_PPC64_TOC16, /* type */
902 1, /* size (0 = byte, 1 = short, 2 = long) */
904 FALSE, /* pc_relative */
906 complain_overflow_signed, /* complain_on_overflow */
907 ppc64_elf_toc_reloc, /* special_function */
908 "R_PPC64_TOC16", /* name */
909 FALSE, /* partial_inplace */
911 0xffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
914 /* 16 bit TOC-relative relocation without overflow. */
916 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
917 HOWTO (R_PPC64_TOC16_LO, /* type */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE, /* pc_relative */
923 complain_overflow_dont, /* complain_on_overflow */
924 ppc64_elf_toc_reloc, /* special_function */
925 "R_PPC64_TOC16_LO", /* name */
926 FALSE, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE), /* pcrel_offset */
931 /* 16 bit TOC-relative relocation, high 16 bits. */
933 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_HI, /* type */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
938 FALSE, /* pc_relative */
940 complain_overflow_dont, /* complain_on_overflow */
941 ppc64_elf_toc_reloc, /* special_function */
942 "R_PPC64_TOC16_HI", /* name */
943 FALSE, /* partial_inplace */
945 0xffff, /* dst_mask */
946 FALSE), /* pcrel_offset */
948 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
949 contents of the low 16 bits, treated as a signed number, is
952 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
953 HOWTO (R_PPC64_TOC16_HA, /* type */
955 1, /* size (0 = byte, 1 = short, 2 = long) */
957 FALSE, /* pc_relative */
959 complain_overflow_dont, /* complain_on_overflow */
960 ppc64_elf_toc_ha_reloc, /* special_function */
961 "R_PPC64_TOC16_HA", /* name */
962 FALSE, /* partial_inplace */
964 0xffff, /* dst_mask */
965 FALSE), /* pcrel_offset */
967 /* 64-bit relocation; insert value of TOC base (.TOC.). */
969 /* R_PPC64_TOC 51 doubleword64 .TOC. */
970 HOWTO (R_PPC64_TOC, /* type */
972 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
974 FALSE, /* pc_relative */
976 complain_overflow_bitfield, /* complain_on_overflow */
977 ppc64_elf_toc64_reloc, /* special_function */
978 "R_PPC64_TOC", /* name */
979 FALSE, /* partial_inplace */
981 ONES (64), /* dst_mask */
982 FALSE), /* pcrel_offset */
984 /* Like R_PPC64_GOT16, but also informs the link editor that the
985 value to relocate may (!) refer to a PLT entry which the link
986 editor (a) may replace with the symbol value. If the link editor
987 is unable to fully resolve the symbol, it may (b) create a PLT
988 entry and store the address to the new PLT entry in the GOT.
989 This permits lazy resolution of function symbols at run time.
990 The link editor may also skip all of this and just (c) emit a
991 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
992 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
993 HOWTO (R_PPC64_PLTGOT16, /* type */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
997 FALSE, /* pc_relative */
999 complain_overflow_signed, /* complain_on_overflow */
1000 ppc64_elf_unhandled_reloc, /* special_function */
1001 "R_PPC64_PLTGOT16", /* name */
1002 FALSE, /* partial_inplace */
1004 0xffff, /* dst_mask */
1005 FALSE), /* pcrel_offset */
1007 /* Like R_PPC64_PLTGOT16, but without overflow. */
1008 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1009 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 FALSE, /* pc_relative */
1015 complain_overflow_dont, /* complain_on_overflow */
1016 ppc64_elf_unhandled_reloc, /* special_function */
1017 "R_PPC64_PLTGOT16_LO", /* name */
1018 FALSE, /* partial_inplace */
1020 0xffff, /* dst_mask */
1021 FALSE), /* pcrel_offset */
1023 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1024 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1025 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 FALSE, /* pc_relative */
1031 complain_overflow_dont, /* complain_on_overflow */
1032 ppc64_elf_unhandled_reloc, /* special_function */
1033 "R_PPC64_PLTGOT16_HI", /* name */
1034 FALSE, /* partial_inplace */
1036 0xffff, /* dst_mask */
1037 FALSE), /* pcrel_offset */
1039 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1040 1 if the contents of the low 16 bits, treated as a signed number,
1042 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1043 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 FALSE, /* pc_relative */
1049 complain_overflow_dont,/* complain_on_overflow */
1050 ppc64_elf_unhandled_reloc, /* special_function */
1051 "R_PPC64_PLTGOT16_HA", /* name */
1052 FALSE, /* partial_inplace */
1054 0xffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1057 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_ADDR16_DS, /* type */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE, /* pc_relative */
1064 complain_overflow_bitfield, /* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_PPC64_ADDR16_DS", /* name */
1067 FALSE, /* partial_inplace */
1069 0xfffc, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1072 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_dont,/* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_ADDR16_LO_DS",/* name */
1082 FALSE, /* partial_inplace */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1087 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_GOT16_DS, /* type */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE, /* pc_relative */
1094 complain_overflow_signed, /* complain_on_overflow */
1095 ppc64_elf_unhandled_reloc, /* special_function */
1096 "R_PPC64_GOT16_DS", /* name */
1097 FALSE, /* partial_inplace */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1102 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE, /* pc_relative */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc, /* special_function */
1111 "R_PPC64_GOT16_LO_DS", /* name */
1112 FALSE, /* partial_inplace */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1117 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_PLT16_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_PLT16_LO_DS", /* name */
1127 FALSE, /* partial_inplace */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1132 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE, /* pc_relative */
1139 complain_overflow_bitfield, /* complain_on_overflow */
1140 ppc64_elf_sectoff_reloc, /* special_function */
1141 "R_PPC64_SECTOFF_DS", /* name */
1142 FALSE, /* partial_inplace */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1147 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE, /* pc_relative */
1154 complain_overflow_dont, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc, /* special_function */
1156 "R_PPC64_SECTOFF_LO_DS",/* name */
1157 FALSE, /* partial_inplace */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1162 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_TOC16_DS, /* type */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_signed, /* complain_on_overflow */
1170 ppc64_elf_toc_reloc, /* special_function */
1171 "R_PPC64_TOC16_DS", /* name */
1172 FALSE, /* partial_inplace */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 FALSE, /* pc_relative */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc, /* special_function */
1186 "R_PPC64_TOC16_LO_DS", /* name */
1187 FALSE, /* partial_inplace */
1189 0xfffc, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1192 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1193 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1194 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 FALSE, /* pc_relative */
1200 complain_overflow_signed, /* complain_on_overflow */
1201 ppc64_elf_unhandled_reloc, /* special_function */
1202 "R_PPC64_PLTGOT16_DS", /* name */
1203 FALSE, /* partial_inplace */
1205 0xfffc, /* dst_mask */
1206 FALSE), /* pcrel_offset */
1208 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1209 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1210 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1212 1, /* size (0 = byte, 1 = short, 2 = long) */
1214 FALSE, /* pc_relative */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 ppc64_elf_unhandled_reloc, /* special_function */
1218 "R_PPC64_PLTGOT16_LO_DS",/* name */
1219 FALSE, /* partial_inplace */
1221 0xfffc, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1224 /* Marker reloc for TLS. */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 FALSE, /* pc_relative */
1231 complain_overflow_dont, /* complain_on_overflow */
1232 bfd_elf_generic_reloc, /* special_function */
1233 "R_PPC64_TLS", /* name */
1234 FALSE, /* partial_inplace */
1237 FALSE), /* pcrel_offset */
1239 /* Computes the load module index of the load module that contains the
1240 definition of its TLS sym. */
1241 HOWTO (R_PPC64_DTPMOD64,
1243 4, /* size (0 = byte, 1 = short, 2 = long) */
1245 FALSE, /* pc_relative */
1247 complain_overflow_dont, /* complain_on_overflow */
1248 ppc64_elf_unhandled_reloc, /* special_function */
1249 "R_PPC64_DTPMOD64", /* name */
1250 FALSE, /* partial_inplace */
1252 ONES (64), /* dst_mask */
1253 FALSE), /* pcrel_offset */
1255 /* Computes a dtv-relative displacement, the difference between the value
1256 of sym+add and the base address of the thread-local storage block that
1257 contains the definition of sym, minus 0x8000. */
1258 HOWTO (R_PPC64_DTPREL64,
1260 4, /* size (0 = byte, 1 = short, 2 = long) */
1262 FALSE, /* pc_relative */
1264 complain_overflow_dont, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_DTPREL64", /* name */
1267 FALSE, /* partial_inplace */
1269 ONES (64), /* dst_mask */
1270 FALSE), /* pcrel_offset */
1272 /* A 16 bit dtprel reloc. */
1273 HOWTO (R_PPC64_DTPREL16,
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1277 FALSE, /* pc_relative */
1279 complain_overflow_signed, /* complain_on_overflow */
1280 ppc64_elf_unhandled_reloc, /* special_function */
1281 "R_PPC64_DTPREL16", /* name */
1282 FALSE, /* partial_inplace */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1287 /* Like DTPREL16, but no overflow. */
1288 HOWTO (R_PPC64_DTPREL16_LO,
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1292 FALSE, /* pc_relative */
1294 complain_overflow_dont, /* complain_on_overflow */
1295 ppc64_elf_unhandled_reloc, /* special_function */
1296 "R_PPC64_DTPREL16_LO", /* name */
1297 FALSE, /* partial_inplace */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1302 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1303 HOWTO (R_PPC64_DTPREL16_HI,
1304 16, /* rightshift */
1305 1, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE, /* pc_relative */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc, /* special_function */
1311 "R_PPC64_DTPREL16_HI", /* name */
1312 FALSE, /* partial_inplace */
1314 0xffff, /* dst_mask */
1315 FALSE), /* pcrel_offset */
1317 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1318 HOWTO (R_PPC64_DTPREL16_HA,
1319 16, /* rightshift */
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE, /* pc_relative */
1324 complain_overflow_dont, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc, /* special_function */
1326 "R_PPC64_DTPREL16_HA", /* name */
1327 FALSE, /* partial_inplace */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1332 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1333 HOWTO (R_PPC64_DTPREL16_HIGHER,
1334 32, /* rightshift */
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 FALSE, /* pc_relative */
1339 complain_overflow_dont, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc, /* special_function */
1341 "R_PPC64_DTPREL16_HIGHER", /* name */
1342 FALSE, /* partial_inplace */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1347 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1349 32, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 FALSE, /* pc_relative */
1354 complain_overflow_dont, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc, /* special_function */
1356 "R_PPC64_DTPREL16_HIGHERA", /* name */
1357 FALSE, /* partial_inplace */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1362 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1364 48, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE, /* pc_relative */
1369 complain_overflow_dont, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc, /* special_function */
1371 "R_PPC64_DTPREL16_HIGHEST", /* name */
1372 FALSE, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1377 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1379 48, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 FALSE, /* pc_relative */
1384 complain_overflow_dont, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1387 FALSE, /* partial_inplace */
1389 0xffff, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1392 /* Like DTPREL16, but for insns with a DS field. */
1393 HOWTO (R_PPC64_DTPREL16_DS,
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE, /* pc_relative */
1399 complain_overflow_signed, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_DS", /* name */
1402 FALSE, /* partial_inplace */
1404 0xfffc, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1407 /* Like DTPREL16_DS, but no overflow. */
1408 HOWTO (R_PPC64_DTPREL16_LO_DS,
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 FALSE, /* pc_relative */
1414 complain_overflow_dont, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc, /* special_function */
1416 "R_PPC64_DTPREL16_LO_DS", /* name */
1417 FALSE, /* partial_inplace */
1419 0xfffc, /* dst_mask */
1420 FALSE), /* pcrel_offset */
1422 /* Computes a tp-relative displacement, the difference between the value of
1423 sym+add and the value of the thread pointer (r13). */
1424 HOWTO (R_PPC64_TPREL64,
1426 4, /* size (0 = byte, 1 = short, 2 = long) */
1428 FALSE, /* pc_relative */
1430 complain_overflow_dont, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_TPREL64", /* name */
1433 FALSE, /* partial_inplace */
1435 ONES (64), /* dst_mask */
1436 FALSE), /* pcrel_offset */
1438 /* A 16 bit tprel reloc. */
1439 HOWTO (R_PPC64_TPREL16,
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 FALSE, /* pc_relative */
1445 complain_overflow_signed, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_TPREL16", /* name */
1448 FALSE, /* partial_inplace */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1453 /* Like TPREL16, but no overflow. */
1454 HOWTO (R_PPC64_TPREL16_LO,
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1458 FALSE, /* pc_relative */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc, /* special_function */
1462 "R_PPC64_TPREL16_LO", /* name */
1463 FALSE, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1468 /* Like TPREL16_LO, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_TPREL16_HI,
1470 16, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE, /* pc_relative */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_TPREL16_HI", /* name */
1478 FALSE, /* partial_inplace */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1483 /* Like TPREL16_HI, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_TPREL16_HA,
1485 16, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE, /* pc_relative */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_TPREL16_HA", /* name */
1493 FALSE, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1498 /* Like TPREL16_HI, but next higher group of 16 bits. */
1499 HOWTO (R_PPC64_TPREL16_HIGHER,
1500 32, /* rightshift */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE, /* pc_relative */
1505 complain_overflow_dont, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_TPREL16_HIGHER", /* name */
1508 FALSE, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1513 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HIGHERA,
1515 32, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE, /* pc_relative */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_TPREL16_HIGHERA", /* name */
1523 FALSE, /* partial_inplace */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1528 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HIGHEST,
1530 48, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1533 FALSE, /* pc_relative */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc, /* special_function */
1537 "R_PPC64_TPREL16_HIGHEST", /* name */
1538 FALSE, /* partial_inplace */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1543 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1545 48, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 FALSE, /* pc_relative */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_HIGHESTA", /* name */
1553 FALSE, /* partial_inplace */
1555 0xffff, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1558 /* Like TPREL16, but for insns with a DS field. */
1559 HOWTO (R_PPC64_TPREL16_DS,
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE, /* pc_relative */
1565 complain_overflow_signed, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_DS", /* name */
1568 FALSE, /* partial_inplace */
1570 0xfffc, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1573 /* Like TPREL16_DS, but no overflow. */
1574 HOWTO (R_PPC64_TPREL16_LO_DS,
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE, /* pc_relative */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc, /* special_function */
1582 "R_PPC64_TPREL16_LO_DS", /* name */
1583 FALSE, /* partial_inplace */
1585 0xfffc, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1588 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1589 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1590 to the first entry relative to the TOC base (r2). */
1591 HOWTO (R_PPC64_GOT_TLSGD16,
1593 1, /* size (0 = byte, 1 = short, 2 = long) */
1595 FALSE, /* pc_relative */
1597 complain_overflow_signed, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc, /* special_function */
1599 "R_PPC64_GOT_TLSGD16", /* name */
1600 FALSE, /* partial_inplace */
1602 0xffff, /* dst_mask */
1603 FALSE), /* pcrel_offset */
1605 /* Like GOT_TLSGD16, but no overflow. */
1606 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1608 1, /* size (0 = byte, 1 = short, 2 = long) */
1610 FALSE, /* pc_relative */
1612 complain_overflow_dont, /* complain_on_overflow */
1613 ppc64_elf_unhandled_reloc, /* special_function */
1614 "R_PPC64_GOT_TLSGD16_LO", /* name */
1615 FALSE, /* partial_inplace */
1617 0xffff, /* dst_mask */
1618 FALSE), /* pcrel_offset */
1620 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1621 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1622 16, /* rightshift */
1623 1, /* size (0 = byte, 1 = short, 2 = long) */
1625 FALSE, /* pc_relative */
1627 complain_overflow_dont, /* complain_on_overflow */
1628 ppc64_elf_unhandled_reloc, /* special_function */
1629 "R_PPC64_GOT_TLSGD16_HI", /* name */
1630 FALSE, /* partial_inplace */
1632 0xffff, /* dst_mask */
1633 FALSE), /* pcrel_offset */
1635 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1636 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1637 16, /* rightshift */
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE, /* pc_relative */
1642 complain_overflow_dont, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc, /* special_function */
1644 "R_PPC64_GOT_TLSGD16_HA", /* name */
1645 FALSE, /* partial_inplace */
1647 0xffff, /* dst_mask */
1648 FALSE), /* pcrel_offset */
1650 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1651 with values (sym+add)@dtpmod and zero, and computes the offset to the
1652 first entry relative to the TOC base (r2). */
1653 HOWTO (R_PPC64_GOT_TLSLD16,
1655 1, /* size (0 = byte, 1 = short, 2 = long) */
1657 FALSE, /* pc_relative */
1659 complain_overflow_signed, /* complain_on_overflow */
1660 ppc64_elf_unhandled_reloc, /* special_function */
1661 "R_PPC64_GOT_TLSLD16", /* name */
1662 FALSE, /* partial_inplace */
1664 0xffff, /* dst_mask */
1665 FALSE), /* pcrel_offset */
1667 /* Like GOT_TLSLD16, but no overflow. */
1668 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1670 1, /* size (0 = byte, 1 = short, 2 = long) */
1672 FALSE, /* pc_relative */
1674 complain_overflow_dont, /* complain_on_overflow */
1675 ppc64_elf_unhandled_reloc, /* special_function */
1676 "R_PPC64_GOT_TLSLD16_LO", /* name */
1677 FALSE, /* partial_inplace */
1679 0xffff, /* dst_mask */
1680 FALSE), /* pcrel_offset */
1682 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1683 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1684 16, /* rightshift */
1685 1, /* size (0 = byte, 1 = short, 2 = long) */
1687 FALSE, /* pc_relative */
1689 complain_overflow_dont, /* complain_on_overflow */
1690 ppc64_elf_unhandled_reloc, /* special_function */
1691 "R_PPC64_GOT_TLSLD16_HI", /* name */
1692 FALSE, /* partial_inplace */
1694 0xffff, /* dst_mask */
1695 FALSE), /* pcrel_offset */
1697 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1698 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1699 16, /* rightshift */
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE, /* pc_relative */
1704 complain_overflow_dont, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc, /* special_function */
1706 "R_PPC64_GOT_TLSLD16_HA", /* name */
1707 FALSE, /* partial_inplace */
1709 0xffff, /* dst_mask */
1710 FALSE), /* pcrel_offset */
1712 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1713 the offset to the entry relative to the TOC base (r2). */
1714 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1716 1, /* size (0 = byte, 1 = short, 2 = long) */
1718 FALSE, /* pc_relative */
1720 complain_overflow_signed, /* complain_on_overflow */
1721 ppc64_elf_unhandled_reloc, /* special_function */
1722 "R_PPC64_GOT_DTPREL16_DS", /* name */
1723 FALSE, /* partial_inplace */
1725 0xfffc, /* dst_mask */
1726 FALSE), /* pcrel_offset */
1728 /* Like GOT_DTPREL16_DS, but no overflow. */
1729 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1731 1, /* size (0 = byte, 1 = short, 2 = long) */
1733 FALSE, /* pc_relative */
1735 complain_overflow_dont, /* complain_on_overflow */
1736 ppc64_elf_unhandled_reloc, /* special_function */
1737 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1738 FALSE, /* partial_inplace */
1740 0xfffc, /* dst_mask */
1741 FALSE), /* pcrel_offset */
1743 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1744 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1745 16, /* rightshift */
1746 1, /* size (0 = byte, 1 = short, 2 = long) */
1748 FALSE, /* pc_relative */
1750 complain_overflow_dont, /* complain_on_overflow */
1751 ppc64_elf_unhandled_reloc, /* special_function */
1752 "R_PPC64_GOT_DTPREL16_HI", /* name */
1753 FALSE, /* partial_inplace */
1755 0xffff, /* dst_mask */
1756 FALSE), /* pcrel_offset */
1758 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1759 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1760 16, /* rightshift */
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE, /* pc_relative */
1765 complain_overflow_dont, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_HA", /* name */
1768 FALSE, /* partial_inplace */
1770 0xffff, /* dst_mask */
1771 FALSE), /* pcrel_offset */
1773 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1774 offset to the entry relative to the TOC base (r2). */
1775 HOWTO (R_PPC64_GOT_TPREL16_DS,
1777 1, /* size (0 = byte, 1 = short, 2 = long) */
1779 FALSE, /* pc_relative */
1781 complain_overflow_signed, /* complain_on_overflow */
1782 ppc64_elf_unhandled_reloc, /* special_function */
1783 "R_PPC64_GOT_TPREL16_DS", /* name */
1784 FALSE, /* partial_inplace */
1786 0xfffc, /* dst_mask */
1787 FALSE), /* pcrel_offset */
1789 /* Like GOT_TPREL16_DS, but no overflow. */
1790 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1792 1, /* size (0 = byte, 1 = short, 2 = long) */
1794 FALSE, /* pc_relative */
1796 complain_overflow_dont, /* complain_on_overflow */
1797 ppc64_elf_unhandled_reloc, /* special_function */
1798 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1799 FALSE, /* partial_inplace */
1801 0xfffc, /* dst_mask */
1802 FALSE), /* pcrel_offset */
1804 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1805 HOWTO (R_PPC64_GOT_TPREL16_HI,
1806 16, /* rightshift */
1807 1, /* size (0 = byte, 1 = short, 2 = long) */
1809 FALSE, /* pc_relative */
1811 complain_overflow_dont, /* complain_on_overflow */
1812 ppc64_elf_unhandled_reloc, /* special_function */
1813 "R_PPC64_GOT_TPREL16_HI", /* name */
1814 FALSE, /* partial_inplace */
1816 0xffff, /* dst_mask */
1817 FALSE), /* pcrel_offset */
1819 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1820 HOWTO (R_PPC64_GOT_TPREL16_HA,
1821 16, /* rightshift */
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE, /* pc_relative */
1826 complain_overflow_dont, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc, /* special_function */
1828 "R_PPC64_GOT_TPREL16_HA", /* name */
1829 FALSE, /* partial_inplace */
1831 0xffff, /* dst_mask */
1832 FALSE), /* pcrel_offset */
1834 /* GNU extension to record C++ vtable hierarchy. */
1835 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1837 0, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE, /* pc_relative */
1841 complain_overflow_dont, /* complain_on_overflow */
1842 NULL, /* special_function */
1843 "R_PPC64_GNU_VTINHERIT", /* name */
1844 FALSE, /* partial_inplace */
1847 FALSE), /* pcrel_offset */
1849 /* GNU extension to record C++ vtable member usage. */
1850 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1852 0, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE, /* pc_relative */
1856 complain_overflow_dont, /* complain_on_overflow */
1857 NULL, /* special_function */
1858 "R_PPC64_GNU_VTENTRY", /* name */
1859 FALSE, /* partial_inplace */
1862 FALSE), /* pcrel_offset */
1866 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1870 ppc_howto_init (void)
1872 unsigned int i, type;
1875 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1878 type = ppc64_elf_howto_raw[i].type;
1879 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1880 / sizeof (ppc64_elf_howto_table[0])));
1881 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1885 static reloc_howto_type *
1886 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1887 bfd_reloc_code_real_type code)
1889 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1891 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1892 /* Initialize howto table if needed. */
1900 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1902 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1904 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1906 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1908 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1910 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1912 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1914 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1916 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1918 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1920 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1922 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1924 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1926 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1928 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1930 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1932 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1934 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1936 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1938 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1940 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1942 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1944 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1946 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1948 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1950 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1952 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1954 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1956 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1958 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1960 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1962 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1964 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1966 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1968 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1970 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1972 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1974 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1976 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1978 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1980 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1982 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1984 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1986 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1988 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1990 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1992 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1994 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1996 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1998 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
2000 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2002 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2004 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2006 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2008 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2010 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2012 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2014 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2016 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2018 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2020 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2022 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2024 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2026 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2028 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2030 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2032 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2034 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2036 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2038 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2040 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2042 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2044 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2046 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2048 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2050 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2052 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2054 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2056 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2058 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2060 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2062 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2064 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2066 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2068 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2070 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2072 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2074 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2076 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2078 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2080 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2082 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2084 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2086 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2088 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2090 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2092 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2094 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2096 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2098 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2100 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2104 return ppc64_elf_howto_table[r];
2107 /* Set the howto pointer for a PowerPC ELF reloc. */
2110 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2111 Elf_Internal_Rela *dst)
2115 /* Initialize howto table if needed. */
2116 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2119 type = ELF64_R_TYPE (dst->r_info);
2120 if (type >= (sizeof (ppc64_elf_howto_table)
2121 / sizeof (ppc64_elf_howto_table[0])))
2123 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2125 type = R_PPC64_NONE;
2127 cache_ptr->howto = ppc64_elf_howto_table[type];
2130 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2132 static bfd_reloc_status_type
2133 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2134 void *data, asection *input_section,
2135 bfd *output_bfd, char **error_message)
2137 /* If this is a relocatable link (output_bfd test tells us), just
2138 call the generic function. Any adjustment will be done at final
2140 if (output_bfd != NULL)
2141 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2142 input_section, output_bfd, error_message);
2144 /* Adjust the addend for sign extension of the low 16 bits.
2145 We won't actually be using the low 16 bits, so trashing them
2147 reloc_entry->addend += 0x8000;
2148 return bfd_reloc_continue;
2151 static bfd_reloc_status_type
2152 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2153 void *data, asection *input_section,
2154 bfd *output_bfd, char **error_message)
2156 if (output_bfd != NULL)
2157 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2158 input_section, output_bfd, error_message);
2160 if (strcmp (symbol->section->name, ".opd") == 0
2161 && (symbol->section->owner->flags & DYNAMIC) == 0)
2163 bfd_vma dest = opd_entry_value (symbol->section,
2164 symbol->value + reloc_entry->addend,
2166 if (dest != (bfd_vma) -1)
2167 reloc_entry->addend = dest - (symbol->value
2168 + symbol->section->output_section->vma
2169 + symbol->section->output_offset);
2171 return bfd_reloc_continue;
2174 static bfd_reloc_status_type
2175 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2176 void *data, asection *input_section,
2177 bfd *output_bfd, char **error_message)
2180 enum elf_ppc64_reloc_type r_type;
2181 bfd_size_type octets;
2182 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2183 bfd_boolean is_power4 = FALSE;
2185 /* If this is a relocatable link (output_bfd test tells us), just
2186 call the generic function. Any adjustment will be done at final
2188 if (output_bfd != NULL)
2189 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2190 input_section, output_bfd, error_message);
2192 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2193 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2194 insn &= ~(0x01 << 21);
2195 r_type = reloc_entry->howto->type;
2196 if (r_type == R_PPC64_ADDR14_BRTAKEN
2197 || r_type == R_PPC64_REL14_BRTAKEN)
2198 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2202 /* Set 'a' bit. This is 0b00010 in BO field for branch
2203 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2204 for branch on CTR insns (BO == 1a00t or 1a01t). */
2205 if ((insn & (0x14 << 21)) == (0x04 << 21))
2207 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2217 if (!bfd_is_com_section (symbol->section))
2218 target = symbol->value;
2219 target += symbol->section->output_section->vma;
2220 target += symbol->section->output_offset;
2221 target += reloc_entry->addend;
2223 from = (reloc_entry->address
2224 + input_section->output_offset
2225 + input_section->output_section->vma);
2227 /* Invert 'y' bit if not the default. */
2228 if ((bfd_signed_vma) (target - from) < 0)
2231 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2233 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2234 input_section, output_bfd, error_message);
2237 static bfd_reloc_status_type
2238 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2239 void *data, asection *input_section,
2240 bfd *output_bfd, char **error_message)
2242 /* If this is a relocatable link (output_bfd test tells us), just
2243 call the generic function. Any adjustment will be done at final
2245 if (output_bfd != NULL)
2246 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2247 input_section, output_bfd, error_message);
2249 /* Subtract the symbol section base address. */
2250 reloc_entry->addend -= symbol->section->output_section->vma;
2251 return bfd_reloc_continue;
2254 static bfd_reloc_status_type
2255 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2256 void *data, asection *input_section,
2257 bfd *output_bfd, char **error_message)
2259 /* If this is a relocatable link (output_bfd test tells us), just
2260 call the generic function. Any adjustment will be done at final
2262 if (output_bfd != NULL)
2263 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2264 input_section, output_bfd, error_message);
2266 /* Subtract the symbol section base address. */
2267 reloc_entry->addend -= symbol->section->output_section->vma;
2269 /* Adjust the addend for sign extension of the low 16 bits. */
2270 reloc_entry->addend += 0x8000;
2271 return bfd_reloc_continue;
2274 static bfd_reloc_status_type
2275 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2276 void *data, asection *input_section,
2277 bfd *output_bfd, char **error_message)
2281 /* If this is a relocatable link (output_bfd test tells us), just
2282 call the generic function. Any adjustment will be done at final
2284 if (output_bfd != NULL)
2285 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2286 input_section, output_bfd, error_message);
2288 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2290 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2292 /* Subtract the TOC base address. */
2293 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2294 return bfd_reloc_continue;
2297 static bfd_reloc_status_type
2298 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2299 void *data, asection *input_section,
2300 bfd *output_bfd, char **error_message)
2304 /* If this is a relocatable link (output_bfd test tells us), just
2305 call the generic function. Any adjustment will be done at final
2307 if (output_bfd != NULL)
2308 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2309 input_section, output_bfd, error_message);
2311 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2313 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2315 /* Subtract the TOC base address. */
2316 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2318 /* Adjust the addend for sign extension of the low 16 bits. */
2319 reloc_entry->addend += 0x8000;
2320 return bfd_reloc_continue;
2323 static bfd_reloc_status_type
2324 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2325 void *data, asection *input_section,
2326 bfd *output_bfd, char **error_message)
2329 bfd_size_type octets;
2331 /* If this is a relocatable link (output_bfd test tells us), just
2332 call the generic function. Any adjustment will be done at final
2334 if (output_bfd != NULL)
2335 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2336 input_section, output_bfd, error_message);
2338 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2340 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2342 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2343 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2344 return bfd_reloc_ok;
2347 static bfd_reloc_status_type
2348 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2349 void *data, asection *input_section,
2350 bfd *output_bfd, char **error_message)
2352 /* If this is a relocatable link (output_bfd test tells us), just
2353 call the generic function. Any adjustment will be done at final
2355 if (output_bfd != NULL)
2356 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2357 input_section, output_bfd, error_message);
2359 if (error_message != NULL)
2361 static char buf[60];
2362 sprintf (buf, "generic linker can't handle %s",
2363 reloc_entry->howto->name);
2364 *error_message = buf;
2366 return bfd_reloc_dangerous;
2369 struct ppc64_elf_obj_tdata
2371 struct elf_obj_tdata elf;
2373 /* Shortcuts to dynamic linker sections. */
2378 /* Used during garbage collection. We attach global symbols defined
2379 on removed .opd entries to this section so that the sym is removed. */
2380 asection *deleted_section;
2382 /* Used when adding symbols. */
2383 bfd_boolean has_dotsym;
2386 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2387 sections means we potentially need one of these for each input bfd. */
2389 bfd_signed_vma refcount;
2393 /* A copy of relocs before they are modified for --emit-relocs. */
2394 Elf_Internal_Rela *opd_relocs;
2397 #define ppc64_elf_tdata(bfd) \
2398 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2400 #define ppc64_tlsld_got(bfd) \
2401 (&ppc64_elf_tdata (bfd)->tlsld_got)
2403 /* Override the generic function because we store some extras. */
2406 ppc64_elf_mkobject (bfd *abfd)
2408 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2409 abfd->tdata.any = bfd_zalloc (abfd, amt);
2410 if (abfd->tdata.any == NULL)
2415 /* Return 1 if target is one of ours. */
2418 is_ppc64_elf_target (const struct bfd_target *targ)
2420 extern const bfd_target bfd_elf64_powerpc_vec;
2421 extern const bfd_target bfd_elf64_powerpcle_vec;
2423 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2426 /* Fix bad default arch selected for a 64 bit input bfd when the
2427 default is 32 bit. */
2430 ppc64_elf_object_p (bfd *abfd)
2432 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2434 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2436 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2438 /* Relies on arch after 32 bit default being 64 bit default. */
2439 abfd->arch_info = abfd->arch_info->next;
2440 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2446 /* Support for core dump NOTE sections. */
2449 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2451 size_t offset, size;
2453 if (note->descsz != 504)
2457 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2460 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2466 /* Make a ".reg/999" section. */
2467 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2468 size, note->descpos + offset);
2472 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2474 if (note->descsz != 136)
2477 elf_tdata (abfd)->core_program
2478 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2479 elf_tdata (abfd)->core_command
2480 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2485 /* Merge backend specific data from an object file to the output
2486 object file when linking. */
2489 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2491 /* Check if we have the same endianess. */
2492 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2493 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2494 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2498 if (bfd_big_endian (ibfd))
2499 msg = _("%B: compiled for a big endian system "
2500 "and target is little endian");
2502 msg = _("%B: compiled for a little endian system "
2503 "and target is big endian");
2505 (*_bfd_error_handler) (msg, ibfd);
2507 bfd_set_error (bfd_error_wrong_format);
2514 /* Add extra PPC sections. */
2516 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2518 { ".plt", 4, 0, SHT_NOBITS, 0 },
2519 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2520 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2521 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2522 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2523 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2524 { NULL, 0, 0, 0, 0 }
2527 struct _ppc64_elf_section_data
2529 struct bfd_elf_section_data elf;
2531 /* An array with one entry for each opd function descriptor. */
2534 /* Points to the function code section for local opd entries. */
2535 asection **func_sec;
2536 /* After editing .opd, adjust references to opd local syms. */
2540 /* An array for toc sections, indexed by offset/8.
2541 Specifies the relocation symbol index used at a given toc offset. */
2545 #define ppc64_elf_section_data(sec) \
2546 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2549 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2551 struct _ppc64_elf_section_data *sdata;
2552 bfd_size_type amt = sizeof (*sdata);
2554 sdata = bfd_zalloc (abfd, amt);
2557 sec->used_by_bfd = sdata;
2559 return _bfd_elf_new_section_hook (abfd, sec);
2563 get_opd_info (asection * sec)
2566 && ppc64_elf_section_data (sec) != NULL
2567 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2568 return ppc64_elf_section_data (sec)->opd.adjust;
2572 /* Parameters for the qsort hook. */
2573 static asection *synthetic_opd;
2574 static bfd_boolean synthetic_relocatable;
2576 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2579 compare_symbols (const void *ap, const void *bp)
2581 const asymbol *a = * (const asymbol **) ap;
2582 const asymbol *b = * (const asymbol **) bp;
2584 /* Section symbols first. */
2585 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2587 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2590 /* then .opd symbols. */
2591 if (a->section == synthetic_opd && b->section != synthetic_opd)
2593 if (a->section != synthetic_opd && b->section == synthetic_opd)
2596 /* then other code symbols. */
2597 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2598 == (SEC_CODE | SEC_ALLOC)
2599 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2600 != (SEC_CODE | SEC_ALLOC))
2603 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2604 != (SEC_CODE | SEC_ALLOC)
2605 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2606 == (SEC_CODE | SEC_ALLOC))
2609 if (synthetic_relocatable)
2611 if (a->section->id < b->section->id)
2614 if (a->section->id > b->section->id)
2618 if (a->value + a->section->vma < b->value + b->section->vma)
2621 if (a->value + a->section->vma > b->value + b->section->vma)
2627 /* Search SYMS for a symbol of the given VALUE. */
2630 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2638 mid = (lo + hi) >> 1;
2639 if (syms[mid]->value + syms[mid]->section->vma < value)
2641 else if (syms[mid]->value + syms[mid]->section->vma > value)
2651 mid = (lo + hi) >> 1;
2652 if (syms[mid]->section->id < id)
2654 else if (syms[mid]->section->id > id)
2656 else if (syms[mid]->value < value)
2658 else if (syms[mid]->value > value)
2667 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2671 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2672 long static_count, asymbol **static_syms,
2673 long dyn_count, asymbol **dyn_syms,
2680 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2682 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2687 opd = bfd_get_section_by_name (abfd, ".opd");
2691 symcount = static_count;
2693 symcount += dyn_count;
2697 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2701 if (!relocatable && static_count != 0 && dyn_count != 0)
2703 /* Use both symbol tables. */
2704 memcpy (syms, static_syms, static_count * sizeof (*syms));
2705 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2707 else if (!relocatable && static_count == 0)
2708 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2710 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2712 synthetic_opd = opd;
2713 synthetic_relocatable = relocatable;
2714 qsort (syms, symcount, sizeof (*syms), compare_symbols);
2716 if (!relocatable && symcount > 1)
2719 /* Trim duplicate syms, since we may have merged the normal and
2720 dynamic symbols. Actually, we only care about syms that have
2721 different values, so trim any with the same value. */
2722 for (i = 1, j = 1; i < symcount; ++i)
2723 if (syms[i - 1]->value + syms[i - 1]->section->vma
2724 != syms[i]->value + syms[i]->section->vma)
2725 syms[j++] = syms[i];
2730 if (syms[i]->section == opd)
2734 for (; i < symcount; ++i)
2735 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2736 != (SEC_CODE | SEC_ALLOC))
2737 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2741 for (; i < symcount; ++i)
2742 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2746 for (; i < symcount; ++i)
2747 if (syms[i]->section != opd)
2751 for (; i < symcount; ++i)
2752 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2753 != (SEC_CODE | SEC_ALLOC))
2758 if (opdsymend == secsymend)
2763 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2768 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2769 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2773 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2780 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2784 while (r < opd->relocation + relcount
2785 && r->address < syms[i]->value + opd->vma)
2788 if (r == opd->relocation + relcount)
2791 if (r->address != syms[i]->value + opd->vma)
2794 if (r->howto->type != R_PPC64_ADDR64)
2797 sym = *r->sym_ptr_ptr;
2798 if (!sym_exists_at (syms, opdsymend, symcount,
2799 sym->section->id, sym->value + r->addend))
2802 size += sizeof (asymbol);
2803 size += strlen (syms[i]->name) + 2;
2807 s = *ret = bfd_malloc (size);
2814 names = (char *) (s + count);
2816 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2820 while (r < opd->relocation + relcount
2821 && r->address < syms[i]->value + opd->vma)
2824 if (r == opd->relocation + relcount)
2827 if (r->address != syms[i]->value + opd->vma)
2830 if (r->howto->type != R_PPC64_ADDR64)
2833 sym = *r->sym_ptr_ptr;
2834 if (!sym_exists_at (syms, opdsymend, symcount,
2835 sym->section->id, sym->value + r->addend))
2840 s->section = sym->section;
2841 s->value = sym->value + r->addend;
2844 len = strlen (syms[i]->name);
2845 memcpy (names, syms[i]->name, len + 1);
2856 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2860 free_contents_and_exit:
2868 for (i = secsymend; i < opdsymend; ++i)
2872 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2873 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2876 size += sizeof (asymbol);
2877 size += strlen (syms[i]->name) + 2;
2881 s = *ret = bfd_malloc (size);
2883 goto free_contents_and_exit;
2885 names = (char *) (s + count);
2887 for (i = secsymend; i < opdsymend; ++i)
2891 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2892 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2896 asection *sec = abfd->sections;
2903 long mid = (lo + hi) >> 1;
2904 if (syms[mid]->section->vma < ent)
2906 else if (syms[mid]->section->vma > ent)
2910 sec = syms[mid]->section;
2915 if (lo >= hi && lo > codesecsym)
2916 sec = syms[lo - 1]->section;
2918 for (; sec != NULL; sec = sec->next)
2922 if ((sec->flags & SEC_ALLOC) == 0
2923 || (sec->flags & SEC_LOAD) == 0)
2925 if ((sec->flags & SEC_CODE) != 0)
2928 s->value = ent - s->section->vma;
2931 len = strlen (syms[i]->name);
2932 memcpy (names, syms[i]->name, len + 1);
2945 /* The following functions are specific to the ELF linker, while
2946 functions above are used generally. Those named ppc64_elf_* are
2947 called by the main ELF linker code. They appear in this file more
2948 or less in the order in which they are called. eg.
2949 ppc64_elf_check_relocs is called early in the link process,
2950 ppc64_elf_finish_dynamic_sections is one of the last functions
2953 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2954 functions have both a function code symbol and a function descriptor
2955 symbol. A call to foo in a relocatable object file looks like:
2962 The function definition in another object file might be:
2966 . .quad .TOC.@tocbase
2972 When the linker resolves the call during a static link, the branch
2973 unsurprisingly just goes to .foo and the .opd information is unused.
2974 If the function definition is in a shared library, things are a little
2975 different: The call goes via a plt call stub, the opd information gets
2976 copied to the plt, and the linker patches the nop.
2984 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2985 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2986 . std 2,40(1) # this is the general idea
2994 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2996 The "reloc ()" notation is supposed to indicate that the linker emits
2997 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3000 What are the difficulties here? Well, firstly, the relocations
3001 examined by the linker in check_relocs are against the function code
3002 sym .foo, while the dynamic relocation in the plt is emitted against
3003 the function descriptor symbol, foo. Somewhere along the line, we need
3004 to carefully copy dynamic link information from one symbol to the other.
3005 Secondly, the generic part of the elf linker will make .foo a dynamic
3006 symbol as is normal for most other backends. We need foo dynamic
3007 instead, at least for an application final link. However, when
3008 creating a shared library containing foo, we need to have both symbols
3009 dynamic so that references to .foo are satisfied during the early
3010 stages of linking. Otherwise the linker might decide to pull in a
3011 definition from some other object, eg. a static library.
3013 Update: As of August 2004, we support a new convention. Function
3014 calls may use the function descriptor symbol, ie. "bl foo". This
3015 behaves exactly as "bl .foo". */
3017 /* The linker needs to keep track of the number of relocs that it
3018 decides to copy as dynamic relocs in check_relocs for each symbol.
3019 This is so that it can later discard them if they are found to be
3020 unnecessary. We store the information in a field extending the
3021 regular ELF linker hash table. */
3023 struct ppc_dyn_relocs
3025 struct ppc_dyn_relocs *next;
3027 /* The input section of the reloc. */
3030 /* Total number of relocs copied for the input section. */
3031 bfd_size_type count;
3033 /* Number of pc-relative relocs copied for the input section. */
3034 bfd_size_type pc_count;
3037 /* Track GOT entries needed for a given symbol. We might need more
3038 than one got entry per symbol. */
3041 struct got_entry *next;
3043 /* The symbol addend that we'll be placing in the GOT. */
3046 /* Unlike other ELF targets, we use separate GOT entries for the same
3047 symbol referenced from different input files. This is to support
3048 automatic multiple TOC/GOT sections, where the TOC base can vary
3049 from one input file to another.
3051 Point to the BFD owning this GOT entry. */
3054 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3055 TLS_TPREL or TLS_DTPREL for tls entries. */
3058 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3061 bfd_signed_vma refcount;
3066 /* The same for PLT. */
3069 struct plt_entry *next;
3075 bfd_signed_vma refcount;
3080 /* Of those relocs that might be copied as dynamic relocs, this macro
3081 selects those that must be copied when linking a shared library,
3082 even when the symbol is local. */
3084 #define MUST_BE_DYN_RELOC(RTYPE) \
3085 ((RTYPE) != R_PPC64_REL32 \
3086 && (RTYPE) != R_PPC64_REL64 \
3087 && (RTYPE) != R_PPC64_REL30)
3089 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3090 copying dynamic variables from a shared lib into an app's dynbss
3091 section, and instead use a dynamic relocation to point into the
3092 shared lib. With code that gcc generates, it's vital that this be
3093 enabled; In the PowerPC64 ABI, the address of a function is actually
3094 the address of a function descriptor, which resides in the .opd
3095 section. gcc uses the descriptor directly rather than going via the
3096 GOT as some other ABI's do, which means that initialized function
3097 pointers must reference the descriptor. Thus, a function pointer
3098 initialized to the address of a function in a shared library will
3099 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3100 redefines the function descriptor symbol to point to the copy. This
3101 presents a problem as a plt entry for that function is also
3102 initialized from the function descriptor symbol and the copy reloc
3103 may not be initialized first. */
3104 #define ELIMINATE_COPY_RELOCS 1
3106 /* Section name for stubs is the associated section name plus this
3108 #define STUB_SUFFIX ".stub"
3111 ppc_stub_long_branch:
3112 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3113 destination, but a 24 bit branch in a stub section will reach.
3116 ppc_stub_plt_branch:
3117 Similar to the above, but a 24 bit branch in the stub section won't
3118 reach its destination.
3119 . addis %r12,%r2,xxx@toc@ha
3120 . ld %r11,xxx@toc@l(%r12)
3125 Used to call a function in a shared library. If it so happens that
3126 the plt entry referenced crosses a 64k boundary, then an extra
3127 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3128 xxx+16 as appropriate.
3129 . addis %r12,%r2,xxx@toc@ha
3131 . ld %r11,xxx+0@toc@l(%r12)
3132 . ld %r2,xxx+8@toc@l(%r12)
3134 . ld %r11,xxx+16@toc@l(%r12)
3137 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3138 code to adjust the value and save r2 to support multiple toc sections.
3139 A ppc_stub_long_branch with an r2 offset looks like:
3141 . addis %r2,%r2,off@ha
3142 . addi %r2,%r2,off@l
3145 A ppc_stub_plt_branch with an r2 offset looks like:
3147 . addis %r12,%r2,xxx@toc@ha
3148 . ld %r11,xxx@toc@l(%r12)
3149 . addis %r2,%r2,off@ha
3150 . addi %r2,%r2,off@l
3155 enum ppc_stub_type {
3157 ppc_stub_long_branch,
3158 ppc_stub_long_branch_r2off,
3159 ppc_stub_plt_branch,
3160 ppc_stub_plt_branch_r2off,
3164 struct ppc_stub_hash_entry {
3166 /* Base hash table entry structure. */
3167 struct bfd_hash_entry root;
3169 enum ppc_stub_type stub_type;
3171 /* The stub section. */
3174 /* Offset within stub_sec of the beginning of this stub. */
3175 bfd_vma stub_offset;
3177 /* Given the symbol's value and its section we can determine its final
3178 value when building the stubs (so the stub knows where to jump. */
3179 bfd_vma target_value;
3180 asection *target_section;
3182 /* The symbol table entry, if any, that this was derived from. */
3183 struct ppc_link_hash_entry *h;
3185 /* And the reloc addend that this was derived from. */
3188 /* Where this stub is being called from, or, in the case of combined
3189 stub sections, the first input section in the group. */
3193 struct ppc_branch_hash_entry {
3195 /* Base hash table entry structure. */
3196 struct bfd_hash_entry root;
3198 /* Offset within branch lookup table. */
3199 unsigned int offset;
3201 /* Generation marker. */
3205 struct ppc_link_hash_entry
3207 struct elf_link_hash_entry elf;
3209 /* A pointer to the most recently used stub hash entry against this
3211 struct ppc_stub_hash_entry *stub_cache;
3213 /* Track dynamic relocs copied for this symbol. */
3214 struct ppc_dyn_relocs *dyn_relocs;
3216 /* Link between function code and descriptor symbols. */
3217 struct ppc_link_hash_entry *oh;
3219 /* Flag function code and descriptor symbols. */
3220 unsigned int is_func:1;
3221 unsigned int is_func_descriptor:1;
3222 unsigned int fake:1;
3224 /* Whether global opd/toc sym has been adjusted or not.
3225 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3226 should be set for all globals defined in any opd/toc section. */
3227 unsigned int adjust_done:1;
3229 /* Set if we twiddled this symbol to weak at some stage. */
3230 unsigned int was_undefined:1;
3232 /* Contexts in which symbol is used in the GOT (or TOC).
3233 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3234 corresponding relocs are encountered during check_relocs.
3235 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3236 indicate the corresponding GOT entry type is not needed.
3237 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3238 a TPREL one. We use a separate flag rather than setting TPREL
3239 just for convenience in distinguishing the two cases. */
3240 #define TLS_GD 1 /* GD reloc. */
3241 #define TLS_LD 2 /* LD reloc. */
3242 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3243 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3244 #define TLS_TLS 16 /* Any TLS reloc. */
3245 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3246 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3250 /* ppc64 ELF linker hash table. */
3252 struct ppc_link_hash_table
3254 struct elf_link_hash_table elf;
3256 /* The stub hash table. */
3257 struct bfd_hash_table stub_hash_table;
3259 /* Another hash table for plt_branch stubs. */
3260 struct bfd_hash_table branch_hash_table;
3262 /* Linker stub bfd. */
3265 /* Linker call-backs. */
3266 asection * (*add_stub_section) (const char *, asection *);
3267 void (*layout_sections_again) (void);
3269 /* Array to keep track of which stub sections have been created, and
3270 information on stub grouping. */
3272 /* This is the section to which stubs in the group will be attached. */
3274 /* The stub section. */
3276 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3280 /* Temp used when calculating TOC pointers. */
3283 /* Highest input section id. */
3286 /* Highest output section index. */
3289 /* List of input sections for each output section. */
3290 asection **input_list;
3292 /* Short-cuts to get to dynamic linker sections. */
3303 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3304 struct ppc_link_hash_entry *tls_get_addr;
3305 struct ppc_link_hash_entry *tls_get_addr_fd;
3308 unsigned long stub_count[ppc_stub_plt_call];
3310 /* Number of stubs against global syms. */
3311 unsigned long stub_globals;
3313 /* Set if we should emit symbols for stubs. */
3314 unsigned int emit_stub_syms:1;
3316 /* Support for multiple toc sections. */
3317 unsigned int no_multi_toc:1;
3318 unsigned int multi_toc_needed:1;
3321 unsigned int stub_error:1;
3323 /* Flag set when small branches are detected. Used to
3324 select suitable defaults for the stub group size. */
3325 unsigned int has_14bit_branch:1;
3327 /* Temp used by ppc64_elf_check_directives. */
3328 unsigned int twiddled_syms:1;
3330 /* Incremented every time we size stubs. */
3331 unsigned int stub_iteration;
3333 /* Small local sym to section mapping cache. */
3334 struct sym_sec_cache sym_sec;
3337 /* Rename some of the generic section flags to better document how they
3339 #define has_toc_reloc has_gp_reloc
3340 #define makes_toc_func_call need_finalize_relax
3341 #define call_check_in_progress reloc_done
3343 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3345 #define ppc_hash_table(p) \
3346 ((struct ppc_link_hash_table *) ((p)->hash))
3348 #define ppc_stub_hash_lookup(table, string, create, copy) \
3349 ((struct ppc_stub_hash_entry *) \
3350 bfd_hash_lookup ((table), (string), (create), (copy)))
3352 #define ppc_branch_hash_lookup(table, string, create, copy) \
3353 ((struct ppc_branch_hash_entry *) \
3354 bfd_hash_lookup ((table), (string), (create), (copy)))
3356 /* Create an entry in the stub hash table. */
3358 static struct bfd_hash_entry *
3359 stub_hash_newfunc (struct bfd_hash_entry *entry,
3360 struct bfd_hash_table *table,
3363 /* Allocate the structure if it has not already been allocated by a
3367 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3372 /* Call the allocation method of the superclass. */
3373 entry = bfd_hash_newfunc (entry, table, string);
3376 struct ppc_stub_hash_entry *eh;
3378 /* Initialize the local fields. */
3379 eh = (struct ppc_stub_hash_entry *) entry;
3380 eh->stub_type = ppc_stub_none;
3381 eh->stub_sec = NULL;
3382 eh->stub_offset = 0;
3383 eh->target_value = 0;
3384 eh->target_section = NULL;
3392 /* Create an entry in the branch hash table. */
3394 static struct bfd_hash_entry *
3395 branch_hash_newfunc (struct bfd_hash_entry *entry,
3396 struct bfd_hash_table *table,
3399 /* Allocate the structure if it has not already been allocated by a
3403 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3408 /* Call the allocation method of the superclass. */
3409 entry = bfd_hash_newfunc (entry, table, string);
3412 struct ppc_branch_hash_entry *eh;
3414 /* Initialize the local fields. */
3415 eh = (struct ppc_branch_hash_entry *) entry;
3423 /* Create an entry in a ppc64 ELF linker hash table. */
3425 static struct bfd_hash_entry *
3426 link_hash_newfunc (struct bfd_hash_entry *entry,
3427 struct bfd_hash_table *table,
3430 /* Allocate the structure if it has not already been allocated by a
3434 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3439 /* Call the allocation method of the superclass. */
3440 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3443 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3445 memset (&eh->stub_cache, 0,
3446 (sizeof (struct ppc_link_hash_entry)
3447 - offsetof (struct ppc_link_hash_entry, stub_cache)));
3453 /* Create a ppc64 ELF linker hash table. */
3455 static struct bfd_link_hash_table *
3456 ppc64_elf_link_hash_table_create (bfd *abfd)
3458 struct ppc_link_hash_table *htab;
3459 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3461 htab = bfd_zmalloc (amt);
3465 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3471 /* Init the stub hash table too. */
3472 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3475 /* And the branch hash table. */
3476 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3479 /* Initializing two fields of the union is just cosmetic. We really
3480 only care about glist, but when compiled on a 32-bit host the
3481 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3482 debugger inspection of these fields look nicer. */
3483 htab->elf.init_got_refcount.refcount = 0;
3484 htab->elf.init_got_refcount.glist = NULL;
3485 htab->elf.init_plt_refcount.refcount = 0;
3486 htab->elf.init_plt_refcount.glist = NULL;
3487 htab->elf.init_got_offset.offset = 0;
3488 htab->elf.init_got_offset.glist = NULL;
3489 htab->elf.init_plt_offset.offset = 0;
3490 htab->elf.init_plt_offset.glist = NULL;
3492 return &htab->elf.root;
3495 /* Free the derived linker hash table. */
3498 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3500 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3502 bfd_hash_table_free (&ret->stub_hash_table);
3503 bfd_hash_table_free (&ret->branch_hash_table);
3504 _bfd_generic_link_hash_table_free (hash);
3507 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3510 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3512 struct ppc_link_hash_table *htab;
3514 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3516 /* Always hook our dynamic sections into the first bfd, which is the
3517 linker created stub bfd. This ensures that the GOT header is at
3518 the start of the output TOC section. */
3519 htab = ppc_hash_table (info);
3520 htab->stub_bfd = abfd;
3521 htab->elf.dynobj = abfd;
3524 /* Build a name for an entry in the stub hash table. */
3527 ppc_stub_name (const asection *input_section,
3528 const asection *sym_sec,
3529 const struct ppc_link_hash_entry *h,
3530 const Elf_Internal_Rela *rel)
3535 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3536 offsets from a sym as a branch target? In fact, we could
3537 probably assume the addend is always zero. */
3538 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3542 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3543 stub_name = bfd_malloc (len);
3544 if (stub_name == NULL)
3547 sprintf (stub_name, "%08x.%s+%x",
3548 input_section->id & 0xffffffff,
3549 h->elf.root.root.string,
3550 (int) rel->r_addend & 0xffffffff);
3554 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3555 stub_name = bfd_malloc (len);
3556 if (stub_name == NULL)
3559 sprintf (stub_name, "%08x.%x:%x+%x",
3560 input_section->id & 0xffffffff,
3561 sym_sec->id & 0xffffffff,
3562 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3563 (int) rel->r_addend & 0xffffffff);
3565 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3566 stub_name[len - 2] = 0;
3570 /* Look up an entry in the stub hash. Stub entries are cached because
3571 creating the stub name takes a bit of time. */
3573 static struct ppc_stub_hash_entry *
3574 ppc_get_stub_entry (const asection *input_section,
3575 const asection *sym_sec,
3576 struct ppc_link_hash_entry *h,
3577 const Elf_Internal_Rela *rel,
3578 struct ppc_link_hash_table *htab)
3580 struct ppc_stub_hash_entry *stub_entry;
3581 const asection *id_sec;
3583 /* If this input section is part of a group of sections sharing one
3584 stub section, then use the id of the first section in the group.
3585 Stub names need to include a section id, as there may well be
3586 more than one stub used to reach say, printf, and we need to
3587 distinguish between them. */
3588 id_sec = htab->stub_group[input_section->id].link_sec;
3590 if (h != NULL && h->stub_cache != NULL
3591 && h->stub_cache->h == h
3592 && h->stub_cache->id_sec == id_sec)
3594 stub_entry = h->stub_cache;
3600 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3601 if (stub_name == NULL)
3604 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3605 stub_name, FALSE, FALSE);
3607 h->stub_cache = stub_entry;
3615 /* Add a new stub entry to the stub hash. Not all fields of the new
3616 stub entry are initialised. */
3618 static struct ppc_stub_hash_entry *
3619 ppc_add_stub (const char *stub_name,
3621 struct ppc_link_hash_table *htab)
3625 struct ppc_stub_hash_entry *stub_entry;
3627 link_sec = htab->stub_group[section->id].link_sec;
3628 stub_sec = htab->stub_group[section->id].stub_sec;
3629 if (stub_sec == NULL)
3631 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3632 if (stub_sec == NULL)
3638 namelen = strlen (link_sec->name);
3639 len = namelen + sizeof (STUB_SUFFIX);
3640 s_name = bfd_alloc (htab->stub_bfd, len);
3644 memcpy (s_name, link_sec->name, namelen);
3645 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3646 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3647 if (stub_sec == NULL)
3649 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3651 htab->stub_group[section->id].stub_sec = stub_sec;
3654 /* Enter this entry into the linker stub hash table. */
3655 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3657 if (stub_entry == NULL)
3659 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3660 section->owner, stub_name);
3664 stub_entry->stub_sec = stub_sec;
3665 stub_entry->stub_offset = 0;
3666 stub_entry->id_sec = link_sec;
3670 /* Create sections for linker generated code. */
3673 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3675 struct ppc_link_hash_table *htab;
3678 htab = ppc_hash_table (info);
3680 /* Create .sfpr for code to save and restore fp regs. */
3681 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3682 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3683 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3685 if (htab->sfpr == NULL
3686 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3689 /* Create .glink for lazy dynamic linking support. */
3690 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3692 if (htab->glink == NULL
3693 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3696 /* Create branch lookup table for plt_branch stubs. */
3699 flags = (SEC_ALLOC | SEC_LOAD
3700 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3702 = bfd_make_section_anyway_with_flags (dynobj, ".data.rel.ro.brlt",
3707 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3708 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3710 = bfd_make_section_anyway_with_flags (dynobj, ".rodata.brlt", flags);
3713 if (htab->brlt == NULL
3714 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3719 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3720 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3722 = bfd_make_section_anyway_with_flags (dynobj, ".rela.data.rel.ro.brlt",
3725 else if (info->emitrelocations)
3727 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3728 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3730 = bfd_make_section_anyway_with_flags (dynobj, ".rela.rodata.brlt",
3737 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3743 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3744 not already done. */
3747 create_got_section (bfd *abfd, struct bfd_link_info *info)
3749 asection *got, *relgot;
3751 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3755 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3758 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3763 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3764 | SEC_LINKER_CREATED);
3766 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
3768 || !bfd_set_section_alignment (abfd, got, 3))
3771 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3772 flags | SEC_READONLY);
3774 || ! bfd_set_section_alignment (abfd, relgot, 3))
3777 ppc64_elf_tdata (abfd)->got = got;
3778 ppc64_elf_tdata (abfd)->relgot = relgot;
3782 /* Create the dynamic sections, and set up shortcuts. */
3785 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3787 struct ppc_link_hash_table *htab;
3789 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3792 htab = ppc_hash_table (info);
3794 htab->got = bfd_get_section_by_name (dynobj, ".got");
3795 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3796 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3797 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3799 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3801 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3802 || (!info->shared && !htab->relbss))
3808 /* Merge PLT info on FROM with that on TO. */
3811 move_plt_plist (struct ppc_link_hash_entry *from,
3812 struct ppc_link_hash_entry *to)
3814 if (from->elf.plt.plist != NULL)
3816 if (to->elf.plt.plist != NULL)
3818 struct plt_entry **entp;
3819 struct plt_entry *ent;
3821 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3823 struct plt_entry *dent;
3825 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3826 if (dent->addend == ent->addend)
3828 dent->plt.refcount += ent->plt.refcount;
3835 *entp = to->elf.plt.plist;
3838 to->elf.plt.plist = from->elf.plt.plist;
3839 from->elf.plt.plist = NULL;
3843 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3846 ppc64_elf_copy_indirect_symbol
3847 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3848 struct elf_link_hash_entry *dir,
3849 struct elf_link_hash_entry *ind)
3851 struct ppc_link_hash_entry *edir, *eind;
3853 edir = (struct ppc_link_hash_entry *) dir;
3854 eind = (struct ppc_link_hash_entry *) ind;
3856 /* Copy over any dynamic relocs we may have on the indirect sym. */
3857 if (eind->dyn_relocs != NULL)
3859 if (edir->dyn_relocs != NULL)
3861 struct ppc_dyn_relocs **pp;
3862 struct ppc_dyn_relocs *p;
3864 if (eind->elf.root.type == bfd_link_hash_indirect)
3867 /* Add reloc counts against the weak sym to the strong sym
3868 list. Merge any entries against the same section. */
3869 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3871 struct ppc_dyn_relocs *q;
3873 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3874 if (q->sec == p->sec)
3876 q->pc_count += p->pc_count;
3877 q->count += p->count;
3884 *pp = edir->dyn_relocs;
3887 edir->dyn_relocs = eind->dyn_relocs;
3888 eind->dyn_relocs = NULL;
3891 edir->is_func |= eind->is_func;
3892 edir->is_func_descriptor |= eind->is_func_descriptor;
3893 edir->tls_mask |= eind->tls_mask;
3895 /* If called to transfer flags for a weakdef during processing
3896 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3897 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3898 if (!(ELIMINATE_COPY_RELOCS
3899 && eind->elf.root.type != bfd_link_hash_indirect
3900 && edir->elf.dynamic_adjusted))
3901 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3903 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3904 edir->elf.ref_regular |= eind->elf.ref_regular;
3905 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3906 edir->elf.needs_plt |= eind->elf.needs_plt;
3908 /* If we were called to copy over info for a weak sym, that's all. */
3909 if (eind->elf.root.type != bfd_link_hash_indirect)
3912 /* Copy over got entries that we may have already seen to the
3913 symbol which just became indirect. */
3914 if (eind->elf.got.glist != NULL)
3916 if (edir->elf.got.glist != NULL)
3918 struct got_entry **entp;
3919 struct got_entry *ent;
3921 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3923 struct got_entry *dent;
3925 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3926 if (dent->addend == ent->addend
3927 && dent->owner == ent->owner
3928 && dent->tls_type == ent->tls_type)
3930 dent->got.refcount += ent->got.refcount;
3937 *entp = edir->elf.got.glist;
3940 edir->elf.got.glist = eind->elf.got.glist;
3941 eind->elf.got.glist = NULL;
3944 /* And plt entries. */
3945 move_plt_plist (eind, edir);
3947 if (edir->elf.dynindx == -1)
3949 edir->elf.dynindx = eind->elf.dynindx;
3950 edir->elf.dynstr_index = eind->elf.dynstr_index;
3951 eind->elf.dynindx = -1;
3952 eind->elf.dynstr_index = 0;
3955 BFD_ASSERT (eind->elf.dynindx == -1);
3958 /* Find the function descriptor hash entry from the given function code
3959 hash entry FH. Link the entries via their OH fields. */
3961 static struct ppc_link_hash_entry *
3962 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3964 struct ppc_link_hash_entry *fdh = fh->oh;
3968 const char *fd_name = fh->elf.root.root.string + 1;
3970 fdh = (struct ppc_link_hash_entry *)
3971 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3974 fdh->is_func_descriptor = 1;
3984 /* Make a fake function descriptor sym for the code sym FH. */
3986 static struct ppc_link_hash_entry *
3987 make_fdh (struct bfd_link_info *info,
3988 struct ppc_link_hash_entry *fh)
3992 struct bfd_link_hash_entry *bh;
3993 struct ppc_link_hash_entry *fdh;
3995 abfd = fh->elf.root.u.undef.abfd;
3996 newsym = bfd_make_empty_symbol (abfd);
3997 newsym->name = fh->elf.root.root.string + 1;
3998 newsym->section = bfd_und_section_ptr;
4000 newsym->flags = BSF_WEAK;
4003 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4004 newsym->flags, newsym->section,
4005 newsym->value, NULL, FALSE, FALSE,
4009 fdh = (struct ppc_link_hash_entry *) bh;
4010 fdh->elf.non_elf = 0;
4012 fdh->is_func_descriptor = 1;
4019 /* Hacks to support old ABI code.
4020 When making function calls, old ABI code references function entry
4021 points (dot symbols), while new ABI code references the function
4022 descriptor symbol. We need to make any combination of reference and
4023 definition work together, without breaking archive linking.
4025 For a defined function "foo" and an undefined call to "bar":
4026 An old object defines "foo" and ".foo", references ".bar" (possibly
4028 A new object defines "foo" and references "bar".
4030 A new object thus has no problem with its undefined symbols being
4031 satisfied by definitions in an old object. On the other hand, the
4032 old object won't have ".bar" satisfied by a new object. */
4034 /* Fix function descriptor symbols defined in .opd sections to be
4038 ppc64_elf_add_symbol_hook (bfd *ibfd,
4039 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4040 Elf_Internal_Sym *isym,
4042 flagword *flags ATTRIBUTE_UNUSED,
4044 bfd_vma *value ATTRIBUTE_UNUSED)
4047 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
4048 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4050 if ((*name)[0] == '.'
4051 && ELF_ST_BIND (isym->st_info) == STB_GLOBAL
4052 && ELF_ST_TYPE (isym->st_info) < STT_SECTION
4053 && is_ppc64_elf_target (ibfd->xvec))
4054 ppc64_elf_tdata (ibfd)->u.has_dotsym = 1;
4059 /* This function makes an old ABI object reference to ".bar" cause the
4060 inclusion of a new ABI object archive that defines "bar".
4061 NAME is a symbol defined in an archive. Return a symbol in the hash
4062 table that might be satisfied by the archive symbols. */
4064 static struct elf_link_hash_entry *
4065 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4066 struct bfd_link_info *info,
4069 struct elf_link_hash_entry *h;
4073 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4075 /* Don't return this sym if it is a fake function descriptor
4076 created by add_symbol_adjust. */
4077 && !(h->root.type == bfd_link_hash_undefweak
4078 && ((struct ppc_link_hash_entry *) h)->fake))
4084 len = strlen (name);
4085 dot_name = bfd_alloc (abfd, len + 2);
4086 if (dot_name == NULL)
4087 return (struct elf_link_hash_entry *) 0 - 1;
4089 memcpy (dot_name + 1, name, len + 1);
4090 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4091 bfd_release (abfd, dot_name);
4095 /* This function satisfies all old ABI object references to ".bar" if a
4096 new ABI object defines "bar". Well, at least, undefined dot symbols
4097 are made weak. This stops later archive searches from including an
4098 object if we already have a function descriptor definition. It also
4099 prevents the linker complaining about undefined symbols.
4100 We also check and correct mismatched symbol visibility here. The
4101 most restrictive visibility of the function descriptor and the
4102 function entry symbol is used. */
4104 struct add_symbol_adjust_data
4106 struct bfd_link_info *info;
4111 add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4113 struct add_symbol_adjust_data *data;
4114 struct ppc_link_hash_table *htab;
4115 struct ppc_link_hash_entry *eh;
4116 struct ppc_link_hash_entry *fdh;
4118 if (h->root.type == bfd_link_hash_indirect)
4121 if (h->root.type == bfd_link_hash_warning)
4122 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4124 if (h->root.root.string[0] != '.')
4128 htab = ppc_hash_table (data->info);
4129 eh = (struct ppc_link_hash_entry *) h;
4130 fdh = get_fdh (eh, htab);
4132 && !data->info->relocatable
4133 && (eh->elf.root.type == bfd_link_hash_undefined
4134 || eh->elf.root.type == bfd_link_hash_undefweak)
4135 && eh->elf.ref_regular)
4137 /* Make an undefweak function descriptor sym, which is enough to
4138 pull in an --as-needed shared lib, but won't cause link
4139 errors. Archives are handled elsewhere. */
4140 fdh = make_fdh (data->info, eh);
4144 fdh->elf.ref_regular = 1;
4146 else if (fdh != NULL)
4148 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4149 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4150 if (entry_vis < descr_vis)
4151 fdh->elf.other += entry_vis - descr_vis;
4152 else if (entry_vis > descr_vis)
4153 eh->elf.other += descr_vis - entry_vis;
4155 if ((fdh->elf.root.type == bfd_link_hash_defined
4156 || fdh->elf.root.type == bfd_link_hash_defweak)
4157 && eh->elf.root.type == bfd_link_hash_undefined)
4159 eh->elf.root.type = bfd_link_hash_undefweak;
4160 eh->was_undefined = 1;
4161 htab->twiddled_syms = 1;
4169 ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info)
4171 struct ppc_link_hash_table *htab;
4172 struct add_symbol_adjust_data data;
4174 if (!is_ppc64_elf_target (abfd->xvec))
4177 if (!ppc64_elf_tdata (abfd)->u.has_dotsym)
4179 ppc64_elf_tdata (abfd)->u.deleted_section = NULL;
4181 htab = ppc_hash_table (info);
4182 if (!is_ppc64_elf_target (htab->elf.root.creator))
4187 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
4189 /* We need to fix the undefs list for any syms we have twiddled to
4191 if (htab->twiddled_syms)
4193 bfd_link_repair_undef_list (&htab->elf.root);
4194 htab->twiddled_syms = 0;
4200 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4201 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4203 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4204 char *local_got_tls_masks;
4206 if (local_got_ents == NULL)
4208 bfd_size_type size = symtab_hdr->sh_info;
4210 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4211 local_got_ents = bfd_zalloc (abfd, size);
4212 if (local_got_ents == NULL)
4214 elf_local_got_ents (abfd) = local_got_ents;
4217 if ((tls_type & TLS_EXPLICIT) == 0)
4219 struct got_entry *ent;
4221 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4222 if (ent->addend == r_addend
4223 && ent->owner == abfd
4224 && ent->tls_type == tls_type)
4228 bfd_size_type amt = sizeof (*ent);
4229 ent = bfd_alloc (abfd, amt);
4232 ent->next = local_got_ents[r_symndx];
4233 ent->addend = r_addend;
4235 ent->tls_type = tls_type;
4236 ent->got.refcount = 0;
4237 local_got_ents[r_symndx] = ent;
4239 ent->got.refcount += 1;
4242 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4243 local_got_tls_masks[r_symndx] |= tls_type;
4248 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4250 struct plt_entry *ent;
4252 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4253 if (ent->addend == addend)
4257 bfd_size_type amt = sizeof (*ent);
4258 ent = bfd_alloc (abfd, amt);
4261 ent->next = eh->elf.plt.plist;
4262 ent->addend = addend;
4263 ent->plt.refcount = 0;
4264 eh->elf.plt.plist = ent;
4266 ent->plt.refcount += 1;
4267 eh->elf.needs_plt = 1;
4268 if (eh->elf.root.root.string[0] == '.'
4269 && eh->elf.root.root.string[1] != '\0')
4274 /* Look through the relocs for a section during the first phase, and
4275 calculate needed space in the global offset table, procedure
4276 linkage table, and dynamic reloc sections. */
4279 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4280 asection *sec, const Elf_Internal_Rela *relocs)
4282 struct ppc_link_hash_table *htab;
4283 Elf_Internal_Shdr *symtab_hdr;
4284 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4285 const Elf_Internal_Rela *rel;
4286 const Elf_Internal_Rela *rel_end;
4288 asection **opd_sym_map;
4290 if (info->relocatable)
4293 /* Don't do anything special with non-loaded, non-alloced sections.
4294 In particular, any relocs in such sections should not affect GOT
4295 and PLT reference counting (ie. we don't allow them to create GOT
4296 or PLT entries), there's no possibility or desire to optimize TLS
4297 relocs, and there's not much point in propagating relocs to shared
4298 libs that the dynamic linker won't relocate. */
4299 if ((sec->flags & SEC_ALLOC) == 0)
4302 htab = ppc_hash_table (info);
4303 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4305 sym_hashes = elf_sym_hashes (abfd);
4306 sym_hashes_end = (sym_hashes
4307 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4308 - symtab_hdr->sh_info);
4312 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4314 /* Garbage collection needs some extra help with .opd sections.
4315 We don't want to necessarily keep everything referenced by
4316 relocs in .opd, as that would keep all functions. Instead,
4317 if we reference an .opd symbol (a function descriptor), we
4318 want to keep the function code symbol's section. This is
4319 easy for global symbols, but for local syms we need to keep
4320 information about the associated function section. Later, if
4321 edit_opd deletes entries, we'll use this array to adjust
4322 local syms in .opd. */
4324 asection *func_section;
4329 amt = sec->size * sizeof (union opd_info) / 8;
4330 opd_sym_map = bfd_zalloc (abfd, amt);
4331 if (opd_sym_map == NULL)
4333 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
4336 if (htab->sfpr == NULL
4337 && !create_linkage_sections (htab->elf.dynobj, info))
4340 rel_end = relocs + sec->reloc_count;
4341 for (rel = relocs; rel < rel_end; rel++)
4343 unsigned long r_symndx;
4344 struct elf_link_hash_entry *h;
4345 enum elf_ppc64_reloc_type r_type;
4348 r_symndx = ELF64_R_SYM (rel->r_info);
4349 if (r_symndx < symtab_hdr->sh_info)
4353 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4354 while (h->root.type == bfd_link_hash_indirect
4355 || h->root.type == bfd_link_hash_warning)
4356 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4359 r_type = ELF64_R_TYPE (rel->r_info);
4362 case R_PPC64_GOT_TLSLD16:
4363 case R_PPC64_GOT_TLSLD16_LO:
4364 case R_PPC64_GOT_TLSLD16_HI:
4365 case R_PPC64_GOT_TLSLD16_HA:
4366 ppc64_tlsld_got (abfd)->refcount += 1;
4367 tls_type = TLS_TLS | TLS_LD;
4370 case R_PPC64_GOT_TLSGD16:
4371 case R_PPC64_GOT_TLSGD16_LO:
4372 case R_PPC64_GOT_TLSGD16_HI:
4373 case R_PPC64_GOT_TLSGD16_HA:
4374 tls_type = TLS_TLS | TLS_GD;
4377 case R_PPC64_GOT_TPREL16_DS:
4378 case R_PPC64_GOT_TPREL16_LO_DS:
4379 case R_PPC64_GOT_TPREL16_HI:
4380 case R_PPC64_GOT_TPREL16_HA:
4382 info->flags |= DF_STATIC_TLS;
4383 tls_type = TLS_TLS | TLS_TPREL;
4386 case R_PPC64_GOT_DTPREL16_DS:
4387 case R_PPC64_GOT_DTPREL16_LO_DS:
4388 case R_PPC64_GOT_DTPREL16_HI:
4389 case R_PPC64_GOT_DTPREL16_HA:
4390 tls_type = TLS_TLS | TLS_DTPREL;
4392 sec->has_tls_reloc = 1;
4396 case R_PPC64_GOT16_DS:
4397 case R_PPC64_GOT16_HA:
4398 case R_PPC64_GOT16_HI:
4399 case R_PPC64_GOT16_LO:
4400 case R_PPC64_GOT16_LO_DS:
4401 /* This symbol requires a global offset table entry. */
4402 sec->has_toc_reloc = 1;
4403 if (ppc64_elf_tdata (abfd)->got == NULL
4404 && !create_got_section (abfd, info))
4409 struct ppc_link_hash_entry *eh;
4410 struct got_entry *ent;
4412 eh = (struct ppc_link_hash_entry *) h;
4413 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4414 if (ent->addend == rel->r_addend
4415 && ent->owner == abfd
4416 && ent->tls_type == tls_type)
4420 bfd_size_type amt = sizeof (*ent);
4421 ent = bfd_alloc (abfd, amt);
4424 ent->next = eh->elf.got.glist;
4425 ent->addend = rel->r_addend;
4427 ent->tls_type = tls_type;
4428 ent->got.refcount = 0;
4429 eh->elf.got.glist = ent;
4431 ent->got.refcount += 1;
4432 eh->tls_mask |= tls_type;
4435 /* This is a global offset table entry for a local symbol. */
4436 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4437 rel->r_addend, tls_type))
4441 case R_PPC64_PLT16_HA:
4442 case R_PPC64_PLT16_HI:
4443 case R_PPC64_PLT16_LO:
4446 /* This symbol requires a procedure linkage table entry. We
4447 actually build the entry in adjust_dynamic_symbol,
4448 because this might be a case of linking PIC code without
4449 linking in any dynamic objects, in which case we don't
4450 need to generate a procedure linkage table after all. */
4453 /* It does not make sense to have a procedure linkage
4454 table entry for a local symbol. */
4455 bfd_set_error (bfd_error_bad_value);
4459 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4464 /* The following relocations don't need to propagate the
4465 relocation if linking a shared object since they are
4466 section relative. */
4467 case R_PPC64_SECTOFF:
4468 case R_PPC64_SECTOFF_LO:
4469 case R_PPC64_SECTOFF_HI:
4470 case R_PPC64_SECTOFF_HA:
4471 case R_PPC64_SECTOFF_DS:
4472 case R_PPC64_SECTOFF_LO_DS:
4473 case R_PPC64_DTPREL16:
4474 case R_PPC64_DTPREL16_LO:
4475 case R_PPC64_DTPREL16_HI:
4476 case R_PPC64_DTPREL16_HA:
4477 case R_PPC64_DTPREL16_DS:
4478 case R_PPC64_DTPREL16_LO_DS:
4479 case R_PPC64_DTPREL16_HIGHER:
4480 case R_PPC64_DTPREL16_HIGHERA:
4481 case R_PPC64_DTPREL16_HIGHEST:
4482 case R_PPC64_DTPREL16_HIGHESTA:
4487 case R_PPC64_TOC16_LO:
4488 case R_PPC64_TOC16_HI:
4489 case R_PPC64_TOC16_HA:
4490 case R_PPC64_TOC16_DS:
4491 case R_PPC64_TOC16_LO_DS:
4492 sec->has_toc_reloc = 1;
4495 /* This relocation describes the C++ object vtable hierarchy.
4496 Reconstruct it for later use during GC. */
4497 case R_PPC64_GNU_VTINHERIT:
4498 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4502 /* This relocation describes which C++ vtable entries are actually
4503 used. Record for later use during GC. */
4504 case R_PPC64_GNU_VTENTRY:
4505 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4510 case R_PPC64_REL14_BRTAKEN:
4511 case R_PPC64_REL14_BRNTAKEN:
4512 htab->has_14bit_branch = 1;
4518 /* We may need a .plt entry if the function this reloc
4519 refers to is in a shared lib. */
4520 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4523 if (h == &htab->tls_get_addr->elf
4524 || h == &htab->tls_get_addr_fd->elf)
4525 sec->has_tls_reloc = 1;
4526 else if (htab->tls_get_addr == NULL
4527 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
4528 && (h->root.root.string[15] == 0
4529 || h->root.root.string[15] == '@'))
4531 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4532 sec->has_tls_reloc = 1;
4534 else if (htab->tls_get_addr_fd == NULL
4535 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4536 && (h->root.root.string[14] == 0
4537 || h->root.root.string[14] == '@'))
4539 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4540 sec->has_tls_reloc = 1;
4545 case R_PPC64_TPREL64:
4546 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4548 info->flags |= DF_STATIC_TLS;
4551 case R_PPC64_DTPMOD64:
4552 if (rel + 1 < rel_end
4553 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4554 && rel[1].r_offset == rel->r_offset + 8)
4555 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4557 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4560 case R_PPC64_DTPREL64:
4561 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4563 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4564 && rel[-1].r_offset == rel->r_offset - 8)
4565 /* This is the second reloc of a dtpmod, dtprel pair.
4566 Don't mark with TLS_DTPREL. */
4570 sec->has_tls_reloc = 1;
4573 struct ppc_link_hash_entry *eh;
4574 eh = (struct ppc_link_hash_entry *) h;
4575 eh->tls_mask |= tls_type;
4578 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4579 rel->r_addend, tls_type))
4582 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4584 /* One extra to simplify get_tls_mask. */
4585 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4586 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4587 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4590 BFD_ASSERT (rel->r_offset % 8 == 0);
4591 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4593 /* Mark the second slot of a GD or LD entry.
4594 -1 to indicate GD and -2 to indicate LD. */
4595 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4596 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4597 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4598 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4601 case R_PPC64_TPREL16:
4602 case R_PPC64_TPREL16_LO:
4603 case R_PPC64_TPREL16_HI:
4604 case R_PPC64_TPREL16_HA:
4605 case R_PPC64_TPREL16_DS:
4606 case R_PPC64_TPREL16_LO_DS:
4607 case R_PPC64_TPREL16_HIGHER:
4608 case R_PPC64_TPREL16_HIGHERA:
4609 case R_PPC64_TPREL16_HIGHEST:
4610 case R_PPC64_TPREL16_HIGHESTA:
4613 info->flags |= DF_STATIC_TLS;
4618 case R_PPC64_ADDR64:
4619 if (opd_sym_map != NULL
4620 && rel + 1 < rel_end
4621 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4625 if (h->root.root.string[0] == '.'
4626 && h->root.root.string[1] != 0
4627 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4630 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4636 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4641 opd_sym_map[rel->r_offset / 8] = s;
4649 case R_PPC64_ADDR14:
4650 case R_PPC64_ADDR14_BRNTAKEN:
4651 case R_PPC64_ADDR14_BRTAKEN:
4652 case R_PPC64_ADDR16:
4653 case R_PPC64_ADDR16_DS:
4654 case R_PPC64_ADDR16_HA:
4655 case R_PPC64_ADDR16_HI:
4656 case R_PPC64_ADDR16_HIGHER:
4657 case R_PPC64_ADDR16_HIGHERA:
4658 case R_PPC64_ADDR16_HIGHEST:
4659 case R_PPC64_ADDR16_HIGHESTA:
4660 case R_PPC64_ADDR16_LO:
4661 case R_PPC64_ADDR16_LO_DS:
4662 case R_PPC64_ADDR24:
4663 case R_PPC64_ADDR32:
4664 case R_PPC64_UADDR16:
4665 case R_PPC64_UADDR32:
4666 case R_PPC64_UADDR64:
4668 if (h != NULL && !info->shared)
4669 /* We may need a copy reloc. */
4672 /* Don't propagate .opd relocs. */
4673 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4676 /* If we are creating a shared library, and this is a reloc
4677 against a global symbol, or a non PC relative reloc
4678 against a local symbol, then we need to copy the reloc
4679 into the shared library. However, if we are linking with
4680 -Bsymbolic, we do not need to copy a reloc against a
4681 global symbol which is defined in an object we are
4682 including in the link (i.e., DEF_REGULAR is set). At
4683 this point we have not seen all the input files, so it is
4684 possible that DEF_REGULAR is not set now but will be set
4685 later (it is never cleared). In case of a weak definition,
4686 DEF_REGULAR may be cleared later by a strong definition in
4687 a shared library. We account for that possibility below by
4688 storing information in the dyn_relocs field of the hash
4689 table entry. A similar situation occurs when creating
4690 shared libraries and symbol visibility changes render the
4693 If on the other hand, we are creating an executable, we
4694 may need to keep relocations for symbols satisfied by a
4695 dynamic library if we manage to avoid copy relocs for the
4699 && (MUST_BE_DYN_RELOC (r_type)
4701 && (! info->symbolic
4702 || h->root.type == bfd_link_hash_defweak
4703 || !h->def_regular))))
4704 || (ELIMINATE_COPY_RELOCS
4707 && (h->root.type == bfd_link_hash_defweak
4708 || !h->def_regular)))
4710 struct ppc_dyn_relocs *p;
4711 struct ppc_dyn_relocs **head;
4713 /* We must copy these reloc types into the output file.
4714 Create a reloc section in dynobj and make room for
4721 name = (bfd_elf_string_from_elf_section
4723 elf_elfheader (abfd)->e_shstrndx,
4724 elf_section_data (sec)->rel_hdr.sh_name));
4728 if (strncmp (name, ".rela", 5) != 0
4729 || strcmp (bfd_get_section_name (abfd, sec),
4732 (*_bfd_error_handler)
4733 (_("%B: bad relocation section name `%s\'"),
4735 bfd_set_error (bfd_error_bad_value);
4738 dynobj = htab->elf.dynobj;
4739 sreloc = bfd_get_section_by_name (dynobj, name);
4744 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4745 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4746 | SEC_ALLOC | SEC_LOAD);
4747 sreloc = bfd_make_section_with_flags (dynobj,
4751 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4754 elf_section_data (sec)->sreloc = sreloc;
4757 /* If this is a global symbol, we count the number of
4758 relocations we need for this symbol. */
4761 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4765 /* Track dynamic relocs needed for local syms too.
4766 We really need local syms available to do this
4772 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4777 vpp = &elf_section_data (s)->local_dynrel;
4778 head = (struct ppc_dyn_relocs **) vpp;
4782 if (p == NULL || p->sec != sec)
4784 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4795 if (!MUST_BE_DYN_RELOC (r_type))
4808 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4809 of the code entry point, and its section. */
4812 opd_entry_value (asection *opd_sec,
4814 asection **code_sec,
4817 bfd *opd_bfd = opd_sec->owner;
4818 Elf_Internal_Rela *relocs;
4819 Elf_Internal_Rela *lo, *hi, *look;
4822 /* No relocs implies we are linking a --just-symbols object. */
4823 if (opd_sec->reloc_count == 0)
4827 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4828 return (bfd_vma) -1;
4830 if (code_sec != NULL)
4832 asection *sec, *likely = NULL;
4833 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4835 && (sec->flags & SEC_LOAD) != 0
4836 && (sec->flags & SEC_ALLOC) != 0)
4841 if (code_off != NULL)
4842 *code_off = val - likely->vma;
4848 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4850 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4852 /* Go find the opd reloc at the sym address. */
4854 BFD_ASSERT (lo != NULL);
4855 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4859 look = lo + (hi - lo) / 2;
4860 if (look->r_offset < offset)
4862 else if (look->r_offset > offset)
4866 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4867 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4868 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4870 unsigned long symndx = ELF64_R_SYM (look->r_info);
4873 if (symndx < symtab_hdr->sh_info)
4875 Elf_Internal_Sym *sym;
4877 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4880 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4881 symtab_hdr->sh_info,
4882 0, NULL, NULL, NULL);
4885 symtab_hdr->contents = (bfd_byte *) sym;
4889 val = sym->st_value;
4891 if ((sym->st_shndx != SHN_UNDEF
4892 && sym->st_shndx < SHN_LORESERVE)
4893 || sym->st_shndx > SHN_HIRESERVE)
4894 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4895 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4899 struct elf_link_hash_entry **sym_hashes;
4900 struct elf_link_hash_entry *rh;
4902 sym_hashes = elf_sym_hashes (opd_bfd);
4903 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4904 while (rh->root.type == bfd_link_hash_indirect
4905 || rh->root.type == bfd_link_hash_warning)
4906 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4907 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4908 || rh->root.type == bfd_link_hash_defweak);
4909 val = rh->root.u.def.value;
4910 sec = rh->root.u.def.section;
4912 val += look->r_addend;
4913 if (code_off != NULL)
4915 if (code_sec != NULL)
4917 if (sec != NULL && sec->output_section != NULL)
4918 val += sec->output_section->vma + sec->output_offset;
4927 /* Return the section that should be marked against GC for a given
4931 ppc64_elf_gc_mark_hook (asection *sec,
4932 struct bfd_link_info *info,
4933 Elf_Internal_Rela *rel,
4934 struct elf_link_hash_entry *h,
4935 Elf_Internal_Sym *sym)
4939 /* First mark all our entry sym sections. */
4940 if (info->gc_sym_list != NULL)
4942 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4943 struct bfd_sym_chain *sym = info->gc_sym_list;
4945 info->gc_sym_list = NULL;
4948 struct ppc_link_hash_entry *eh;
4950 eh = (struct ppc_link_hash_entry *)
4951 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4954 if (eh->elf.root.type != bfd_link_hash_defined
4955 && eh->elf.root.type != bfd_link_hash_defweak)
4958 if (eh->is_func_descriptor
4959 && (eh->oh->elf.root.type == bfd_link_hash_defined
4960 || eh->oh->elf.root.type == bfd_link_hash_defweak))
4961 rsec = eh->oh->elf.root.u.def.section;
4962 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4963 && opd_entry_value (eh->elf.root.u.def.section,
4964 eh->elf.root.u.def.value,
4965 &rsec, NULL) != (bfd_vma) -1)
4971 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4973 rsec = eh->elf.root.u.def.section;
4975 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4979 while (sym != NULL);
4982 /* Syms return NULL if we're marking .opd, so we avoid marking all
4983 function sections, as all functions are referenced in .opd. */
4985 if (get_opd_info (sec) != NULL)
4990 enum elf_ppc64_reloc_type r_type;
4991 struct ppc_link_hash_entry *eh;
4993 r_type = ELF64_R_TYPE (rel->r_info);
4996 case R_PPC64_GNU_VTINHERIT:
4997 case R_PPC64_GNU_VTENTRY:
5001 switch (h->root.type)
5003 case bfd_link_hash_defined:
5004 case bfd_link_hash_defweak:
5005 eh = (struct ppc_link_hash_entry *) h;
5007 && eh->oh->is_func_descriptor
5008 && (eh->oh->elf.root.type == bfd_link_hash_defined
5009 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5012 /* Function descriptor syms cause the associated
5013 function code sym section to be marked. */
5014 if (eh->is_func_descriptor
5015 && (eh->oh->elf.root.type == bfd_link_hash_defined
5016 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5018 /* They also mark their opd section. */
5019 if (!eh->elf.root.u.def.section->gc_mark)
5020 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5021 ppc64_elf_gc_mark_hook);
5023 rsec = eh->oh->elf.root.u.def.section;
5025 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5026 && opd_entry_value (eh->elf.root.u.def.section,
5027 eh->elf.root.u.def.value,
5028 &rsec, NULL) != (bfd_vma) -1)
5030 if (!eh->elf.root.u.def.section->gc_mark)
5031 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5032 ppc64_elf_gc_mark_hook);
5035 rsec = h->root.u.def.section;
5038 case bfd_link_hash_common:
5039 rsec = h->root.u.c.p->section;
5049 asection **opd_sym_section;
5051 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5052 opd_sym_section = get_opd_info (rsec);
5053 if (opd_sym_section != NULL)
5056 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5058 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
5065 /* Update the .got, .plt. and dynamic reloc reference counts for the
5066 section being removed. */
5069 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5070 asection *sec, const Elf_Internal_Rela *relocs)
5072 struct ppc_link_hash_table *htab;
5073 Elf_Internal_Shdr *symtab_hdr;
5074 struct elf_link_hash_entry **sym_hashes;
5075 struct got_entry **local_got_ents;
5076 const Elf_Internal_Rela *rel, *relend;
5078 if ((sec->flags & SEC_ALLOC) == 0)
5081 elf_section_data (sec)->local_dynrel = NULL;
5083 htab = ppc_hash_table (info);
5084 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5085 sym_hashes = elf_sym_hashes (abfd);
5086 local_got_ents = elf_local_got_ents (abfd);
5088 relend = relocs + sec->reloc_count;
5089 for (rel = relocs; rel < relend; rel++)
5091 unsigned long r_symndx;
5092 enum elf_ppc64_reloc_type r_type;
5093 struct elf_link_hash_entry *h = NULL;
5096 r_symndx = ELF64_R_SYM (rel->r_info);
5097 r_type = ELF64_R_TYPE (rel->r_info);
5098 if (r_symndx >= symtab_hdr->sh_info)
5100 struct ppc_link_hash_entry *eh;
5101 struct ppc_dyn_relocs **pp;
5102 struct ppc_dyn_relocs *p;
5104 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5105 while (h->root.type == bfd_link_hash_indirect
5106 || h->root.type == bfd_link_hash_warning)
5107 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5108 eh = (struct ppc_link_hash_entry *) h;
5110 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5113 /* Everything must go for SEC. */
5121 case R_PPC64_GOT_TLSLD16:
5122 case R_PPC64_GOT_TLSLD16_LO:
5123 case R_PPC64_GOT_TLSLD16_HI:
5124 case R_PPC64_GOT_TLSLD16_HA:
5125 ppc64_tlsld_got (abfd)->refcount -= 1;
5126 tls_type = TLS_TLS | TLS_LD;
5129 case R_PPC64_GOT_TLSGD16:
5130 case R_PPC64_GOT_TLSGD16_LO:
5131 case R_PPC64_GOT_TLSGD16_HI:
5132 case R_PPC64_GOT_TLSGD16_HA:
5133 tls_type = TLS_TLS | TLS_GD;
5136 case R_PPC64_GOT_TPREL16_DS:
5137 case R_PPC64_GOT_TPREL16_LO_DS:
5138 case R_PPC64_GOT_TPREL16_HI:
5139 case R_PPC64_GOT_TPREL16_HA:
5140 tls_type = TLS_TLS | TLS_TPREL;
5143 case R_PPC64_GOT_DTPREL16_DS:
5144 case R_PPC64_GOT_DTPREL16_LO_DS:
5145 case R_PPC64_GOT_DTPREL16_HI:
5146 case R_PPC64_GOT_DTPREL16_HA:
5147 tls_type = TLS_TLS | TLS_DTPREL;
5151 case R_PPC64_GOT16_DS:
5152 case R_PPC64_GOT16_HA:
5153 case R_PPC64_GOT16_HI:
5154 case R_PPC64_GOT16_LO:
5155 case R_PPC64_GOT16_LO_DS:
5158 struct got_entry *ent;
5163 ent = local_got_ents[r_symndx];
5165 for (; ent != NULL; ent = ent->next)
5166 if (ent->addend == rel->r_addend
5167 && ent->owner == abfd
5168 && ent->tls_type == tls_type)
5172 if (ent->got.refcount > 0)
5173 ent->got.refcount -= 1;
5177 case R_PPC64_PLT16_HA:
5178 case R_PPC64_PLT16_HI:
5179 case R_PPC64_PLT16_LO:
5183 case R_PPC64_REL14_BRNTAKEN:
5184 case R_PPC64_REL14_BRTAKEN:
5188 struct plt_entry *ent;
5190 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5191 if (ent->addend == rel->r_addend)
5195 if (ent->plt.refcount > 0)
5196 ent->plt.refcount -= 1;
5207 /* The maximum size of .sfpr. */
5208 #define SFPR_MAX (218*4)
5210 struct sfpr_def_parms
5212 const char name[12];
5213 unsigned char lo, hi;
5214 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5215 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5218 /* Auto-generate _save*, _rest* functions in .sfpr. */
5221 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5223 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5225 size_t len = strlen (parm->name);
5226 bfd_boolean writing = FALSE;
5229 memcpy (sym, parm->name, len);
5232 for (i = parm->lo; i <= parm->hi; i++)
5234 struct elf_link_hash_entry *h;
5236 sym[len + 0] = i / 10 + '0';
5237 sym[len + 1] = i % 10 + '0';
5238 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5242 h->root.type = bfd_link_hash_defined;
5243 h->root.u.def.section = htab->sfpr;
5244 h->root.u.def.value = htab->sfpr->size;
5247 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5249 if (htab->sfpr->contents == NULL)
5251 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5252 if (htab->sfpr->contents == NULL)
5258 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5260 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5262 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5263 htab->sfpr->size = p - htab->sfpr->contents;
5271 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5273 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5278 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5280 p = savegpr0 (abfd, p, r);
5281 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5283 bfd_put_32 (abfd, BLR, p);
5288 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5290 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5295 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5297 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5299 p = restgpr0 (abfd, p, r);
5300 bfd_put_32 (abfd, MTLR_R0, p);
5304 p = restgpr0 (abfd, p, 30);
5305 p = restgpr0 (abfd, p, 31);
5307 bfd_put_32 (abfd, BLR, p);
5312 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5314 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5319 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5321 p = savegpr1 (abfd, p, r);
5322 bfd_put_32 (abfd, BLR, p);
5327 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5329 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5334 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5336 p = restgpr1 (abfd, p, r);
5337 bfd_put_32 (abfd, BLR, p);
5342 savefpr (bfd *abfd, bfd_byte *p, int r)
5344 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5349 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5351 p = savefpr (abfd, p, r);
5352 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5354 bfd_put_32 (abfd, BLR, p);
5359 restfpr (bfd *abfd, bfd_byte *p, int r)
5361 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5366 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5368 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5370 p = restfpr (abfd, p, r);
5371 bfd_put_32 (abfd, MTLR_R0, p);
5375 p = restfpr (abfd, p, 30);
5376 p = restfpr (abfd, p, 31);
5378 bfd_put_32 (abfd, BLR, p);
5383 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5385 p = savefpr (abfd, p, r);
5386 bfd_put_32 (abfd, BLR, p);
5391 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5393 p = restfpr (abfd, p, r);
5394 bfd_put_32 (abfd, BLR, p);
5399 savevr (bfd *abfd, bfd_byte *p, int r)
5401 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5403 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5408 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5410 p = savevr (abfd, p, r);
5411 bfd_put_32 (abfd, BLR, p);
5416 restvr (bfd *abfd, bfd_byte *p, int r)
5418 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5420 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5425 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5427 p = restvr (abfd, p, r);
5428 bfd_put_32 (abfd, BLR, p);
5432 /* Called via elf_link_hash_traverse to transfer dynamic linking
5433 information on function code symbol entries to their corresponding
5434 function descriptor symbol entries. */
5437 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5439 struct bfd_link_info *info;
5440 struct ppc_link_hash_table *htab;
5441 struct plt_entry *ent;
5442 struct ppc_link_hash_entry *fh;
5443 struct ppc_link_hash_entry *fdh;
5444 bfd_boolean force_local;
5446 fh = (struct ppc_link_hash_entry *) h;
5447 if (fh->elf.root.type == bfd_link_hash_indirect)
5450 if (fh->elf.root.type == bfd_link_hash_warning)
5451 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5454 htab = ppc_hash_table (info);
5456 /* Resolve undefined references to dot-symbols as the value
5457 in the function descriptor, if we have one in a regular object.
5458 This is to satisfy cases like ".quad .foo". Calls to functions
5459 in dynamic objects are handled elsewhere. */
5460 if (fh->elf.root.type == bfd_link_hash_undefweak
5461 && fh->was_undefined
5462 && (fh->oh->elf.root.type == bfd_link_hash_defined
5463 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5464 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5465 && opd_entry_value (fh->oh->elf.root.u.def.section,
5466 fh->oh->elf.root.u.def.value,
5467 &fh->elf.root.u.def.section,
5468 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5470 fh->elf.root.type = fh->oh->elf.root.type;
5471 fh->elf.forced_local = 1;
5474 /* If this is a function code symbol, transfer dynamic linking
5475 information to the function descriptor symbol. */
5479 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5480 if (ent->plt.refcount > 0)
5483 || fh->elf.root.root.string[0] != '.'
5484 || fh->elf.root.root.string[1] == '\0')
5487 /* Find the corresponding function descriptor symbol. Create it
5488 as undefined if necessary. */
5490 fdh = get_fdh (fh, htab);
5492 while (fdh->elf.root.type == bfd_link_hash_indirect
5493 || fdh->elf.root.type == bfd_link_hash_warning)
5494 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5498 && (fh->elf.root.type == bfd_link_hash_undefined
5499 || fh->elf.root.type == bfd_link_hash_undefweak))
5501 fdh = make_fdh (info, fh);
5506 /* Fake function descriptors are made undefweak. If the function
5507 code symbol is strong undefined, make the fake sym the same.
5508 If the function code symbol is defined, then force the fake
5509 descriptor local; We can't support overriding of symbols in a
5510 shared library on a fake descriptor. */
5514 && fdh->elf.root.type == bfd_link_hash_undefweak)
5516 if (fh->elf.root.type == bfd_link_hash_undefined)
5518 fdh->elf.root.type = bfd_link_hash_undefined;
5519 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5521 else if (fh->elf.root.type == bfd_link_hash_defined
5522 || fh->elf.root.type == bfd_link_hash_defweak)
5524 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5529 && !fdh->elf.forced_local
5531 || fdh->elf.def_dynamic
5532 || fdh->elf.ref_dynamic
5533 || (fdh->elf.root.type == bfd_link_hash_undefweak
5534 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5536 if (fdh->elf.dynindx == -1)
5537 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5539 fdh->elf.ref_regular |= fh->elf.ref_regular;
5540 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5541 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5542 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
5543 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5545 move_plt_plist (fh, fdh);
5546 fdh->elf.needs_plt = 1;
5548 fdh->is_func_descriptor = 1;
5553 /* Now that the info is on the function descriptor, clear the
5554 function code sym info. Any function code syms for which we
5555 don't have a definition in a regular file, we force local.
5556 This prevents a shared library from exporting syms that have
5557 been imported from another library. Function code syms that
5558 are really in the library we must leave global to prevent the
5559 linker dragging in a definition from a static library. */
5560 force_local = (!fh->elf.def_regular
5562 || !fdh->elf.def_regular
5563 || fdh->elf.forced_local);
5564 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5569 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5570 this hook to a) provide some gcc support functions, and b) transfer
5571 dynamic linking information gathered so far on function code symbol
5572 entries, to their corresponding function descriptor symbol entries. */
5575 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5576 struct bfd_link_info *info)
5578 struct ppc_link_hash_table *htab;
5580 const struct sfpr_def_parms funcs[] =
5582 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5583 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5584 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5585 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5586 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5587 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5588 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5589 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5590 { "._savef", 14, 31, savefpr, savefpr1_tail },
5591 { "._restf", 14, 31, restfpr, restfpr1_tail },
5592 { "_savevr_", 20, 31, savevr, savevr_tail },
5593 { "_restvr_", 20, 31, restvr, restvr_tail }
5596 htab = ppc_hash_table (info);
5597 if (htab->sfpr == NULL)
5598 /* We don't have any relocs. */
5601 /* Provide any missing _save* and _rest* functions. */
5602 htab->sfpr->size = 0;
5603 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5604 if (!sfpr_define (info, &funcs[i]))
5607 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5609 if (htab->sfpr->size == 0)
5610 htab->sfpr->flags |= SEC_EXCLUDE;
5615 /* Adjust a symbol defined by a dynamic object and referenced by a
5616 regular object. The current definition is in some section of the
5617 dynamic object, but we're not including those sections. We have to
5618 change the definition to something the rest of the link can
5622 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5623 struct elf_link_hash_entry *h)
5625 struct ppc_link_hash_table *htab;
5627 unsigned int power_of_two;
5629 htab = ppc_hash_table (info);
5631 /* Deal with function syms. */
5632 if (h->type == STT_FUNC
5635 /* Clear procedure linkage table information for any symbol that
5636 won't need a .plt entry. */
5637 struct plt_entry *ent;
5638 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5639 if (ent->plt.refcount > 0)
5642 || SYMBOL_CALLS_LOCAL (info, h)
5643 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5644 && h->root.type == bfd_link_hash_undefweak))
5646 h->plt.plist = NULL;
5651 h->plt.plist = NULL;
5653 /* If this is a weak symbol, and there is a real definition, the
5654 processor independent code will have arranged for us to see the
5655 real definition first, and we can just use the same value. */
5656 if (h->u.weakdef != NULL)
5658 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5659 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5660 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5661 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5662 if (ELIMINATE_COPY_RELOCS)
5663 h->non_got_ref = h->u.weakdef->non_got_ref;
5667 /* If we are creating a shared library, we must presume that the
5668 only references to the symbol are via the global offset table.
5669 For such cases we need not do anything here; the relocations will
5670 be handled correctly by relocate_section. */
5674 /* If there are no references to this symbol that do not use the
5675 GOT, we don't need to generate a copy reloc. */
5676 if (!h->non_got_ref)
5679 if (ELIMINATE_COPY_RELOCS)
5681 struct ppc_link_hash_entry * eh;
5682 struct ppc_dyn_relocs *p;
5684 eh = (struct ppc_link_hash_entry *) h;
5685 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5687 s = p->sec->output_section;
5688 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5692 /* If we didn't find any dynamic relocs in read-only sections, then
5693 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5701 if (h->plt.plist != NULL)
5703 /* We should never get here, but unfortunately there are versions
5704 of gcc out there that improperly (for this ABI) put initialized
5705 function pointers, vtable refs and suchlike in read-only
5706 sections. Allow them to proceed, but warn that this might
5707 break at runtime. */
5708 (*_bfd_error_handler)
5709 (_("copy reloc against `%s' requires lazy plt linking; "
5710 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5711 h->root.root.string);
5714 /* This is a reference to a symbol defined by a dynamic object which
5715 is not a function. */
5719 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5720 h->root.root.string);
5724 /* We must allocate the symbol in our .dynbss section, which will
5725 become part of the .bss section of the executable. There will be
5726 an entry for this symbol in the .dynsym section. The dynamic
5727 object will contain position independent code, so all references
5728 from the dynamic object to this symbol will go through the global
5729 offset table. The dynamic linker will use the .dynsym entry to
5730 determine the address it must put in the global offset table, so
5731 both the dynamic object and the regular object will refer to the
5732 same memory location for the variable. */
5734 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5735 to copy the initial value out of the dynamic object and into the
5736 runtime process image. We need to remember the offset into the
5737 .rela.bss section we are going to use. */
5738 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5740 htab->relbss->size += sizeof (Elf64_External_Rela);
5744 /* We need to figure out the alignment required for this symbol. I
5745 have no idea how ELF linkers handle this. */
5746 power_of_two = bfd_log2 (h->size);
5747 if (power_of_two > 4)
5750 /* Apply the required alignment. */
5752 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5753 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5755 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5759 /* Define the symbol as being at this point in the section. */
5760 h->root.u.def.section = s;
5761 h->root.u.def.value = s->size;
5763 /* Increment the section size to make room for the symbol. */
5769 /* If given a function descriptor symbol, hide both the function code
5770 sym and the descriptor. */
5772 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5773 struct elf_link_hash_entry *h,
5774 bfd_boolean force_local)
5776 struct ppc_link_hash_entry *eh;
5777 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5779 eh = (struct ppc_link_hash_entry *) h;
5780 if (eh->is_func_descriptor)
5782 struct ppc_link_hash_entry *fh = eh->oh;
5787 struct ppc_link_hash_table *htab;
5790 /* We aren't supposed to use alloca in BFD because on
5791 systems which do not have alloca the version in libiberty
5792 calls xmalloc, which might cause the program to crash
5793 when it runs out of memory. This function doesn't have a
5794 return status, so there's no way to gracefully return an
5795 error. So cheat. We know that string[-1] can be safely
5796 accessed; It's either a string in an ELF string table,
5797 or allocated in an objalloc structure. */
5799 p = eh->elf.root.root.string - 1;
5802 htab = ppc_hash_table (info);
5803 fh = (struct ppc_link_hash_entry *)
5804 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5807 /* Unfortunately, if it so happens that the string we were
5808 looking for was allocated immediately before this string,
5809 then we overwrote the string terminator. That's the only
5810 reason the lookup should fail. */
5813 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5814 while (q >= eh->elf.root.root.string && *q == *p)
5816 if (q < eh->elf.root.root.string && *p == '.')
5817 fh = (struct ppc_link_hash_entry *)
5818 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5827 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5832 get_sym_h (struct elf_link_hash_entry **hp,
5833 Elf_Internal_Sym **symp,
5836 Elf_Internal_Sym **locsymsp,
5837 unsigned long r_symndx,
5840 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5842 if (r_symndx >= symtab_hdr->sh_info)
5844 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5845 struct elf_link_hash_entry *h;
5847 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5848 while (h->root.type == bfd_link_hash_indirect
5849 || h->root.type == bfd_link_hash_warning)
5850 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5858 if (symsecp != NULL)
5860 asection *symsec = NULL;
5861 if (h->root.type == bfd_link_hash_defined
5862 || h->root.type == bfd_link_hash_defweak)
5863 symsec = h->root.u.def.section;
5867 if (tls_maskp != NULL)
5869 struct ppc_link_hash_entry *eh;
5871 eh = (struct ppc_link_hash_entry *) h;
5872 *tls_maskp = &eh->tls_mask;
5877 Elf_Internal_Sym *sym;
5878 Elf_Internal_Sym *locsyms = *locsymsp;
5880 if (locsyms == NULL)
5882 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5883 if (locsyms == NULL)
5884 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5885 symtab_hdr->sh_info,
5886 0, NULL, NULL, NULL);
5887 if (locsyms == NULL)
5889 *locsymsp = locsyms;
5891 sym = locsyms + r_symndx;
5899 if (symsecp != NULL)
5901 asection *symsec = NULL;
5902 if ((sym->st_shndx != SHN_UNDEF
5903 && sym->st_shndx < SHN_LORESERVE)
5904 || sym->st_shndx > SHN_HIRESERVE)
5905 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5909 if (tls_maskp != NULL)
5911 struct got_entry **lgot_ents;
5915 lgot_ents = elf_local_got_ents (ibfd);
5916 if (lgot_ents != NULL)
5918 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5919 tls_mask = &lgot_masks[r_symndx];
5921 *tls_maskp = tls_mask;
5927 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5928 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5929 type suitable for optimization, and 1 otherwise. */
5932 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5933 Elf_Internal_Sym **locsymsp,
5934 const Elf_Internal_Rela *rel, bfd *ibfd)
5936 unsigned long r_symndx;
5938 struct elf_link_hash_entry *h;
5939 Elf_Internal_Sym *sym;
5943 r_symndx = ELF64_R_SYM (rel->r_info);
5944 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5947 if ((*tls_maskp != NULL && **tls_maskp != 0)
5949 || ppc64_elf_section_data (sec)->t_symndx == NULL)
5952 /* Look inside a TOC section too. */
5955 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5956 off = h->root.u.def.value;
5959 off = sym->st_value;
5960 off += rel->r_addend;
5961 BFD_ASSERT (off % 8 == 0);
5962 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
5963 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
5964 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5966 if (toc_symndx != NULL)
5967 *toc_symndx = r_symndx;
5969 || ((h->root.type == bfd_link_hash_defined
5970 || h->root.type == bfd_link_hash_defweak)
5971 && !h->def_dynamic))
5972 && (next_r == -1 || next_r == -2))
5977 /* Adjust all global syms defined in opd sections. In gcc generated
5978 code for the old ABI, these will already have been done. */
5981 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5983 struct ppc_link_hash_entry *eh;
5987 if (h->root.type == bfd_link_hash_indirect)
5990 if (h->root.type == bfd_link_hash_warning)
5991 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5993 if (h->root.type != bfd_link_hash_defined
5994 && h->root.type != bfd_link_hash_defweak)
5997 eh = (struct ppc_link_hash_entry *) h;
5998 if (eh->adjust_done)
6001 sym_sec = eh->elf.root.u.def.section;
6002 opd_adjust = get_opd_info (sym_sec);
6003 if (opd_adjust != NULL)
6005 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
6008 /* This entry has been deleted. */
6009 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->u.deleted_section;
6012 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6013 if (elf_discarded_section (dsec))
6015 ppc64_elf_tdata (sym_sec->owner)->u.deleted_section = dsec;
6019 eh->elf.root.u.def.value = 0;
6020 eh->elf.root.u.def.section = dsec;
6023 eh->elf.root.u.def.value += adjust;
6024 eh->adjust_done = 1;
6029 /* Handles decrementing dynamic reloc counts for the reloc specified by
6030 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6031 have already been determined. */
6034 dec_dynrel_count (bfd_vma r_info,
6036 struct bfd_link_info *info,
6037 Elf_Internal_Sym **local_syms,
6038 struct elf_link_hash_entry *h,
6041 enum elf_ppc64_reloc_type r_type;
6042 struct ppc_dyn_relocs *p;
6043 struct ppc_dyn_relocs **pp;
6045 /* Can this reloc be dynamic? This switch, and later tests here
6046 should be kept in sync with the code in check_relocs. */
6047 r_type = ELF64_R_TYPE (r_info);
6053 case R_PPC64_TPREL16:
6054 case R_PPC64_TPREL16_LO:
6055 case R_PPC64_TPREL16_HI:
6056 case R_PPC64_TPREL16_HA:
6057 case R_PPC64_TPREL16_DS:
6058 case R_PPC64_TPREL16_LO_DS:
6059 case R_PPC64_TPREL16_HIGHER:
6060 case R_PPC64_TPREL16_HIGHERA:
6061 case R_PPC64_TPREL16_HIGHEST:
6062 case R_PPC64_TPREL16_HIGHESTA:
6066 case R_PPC64_TPREL64:
6067 case R_PPC64_DTPMOD64:
6068 case R_PPC64_DTPREL64:
6069 case R_PPC64_ADDR64:
6073 case R_PPC64_ADDR14:
6074 case R_PPC64_ADDR14_BRNTAKEN:
6075 case R_PPC64_ADDR14_BRTAKEN:
6076 case R_PPC64_ADDR16:
6077 case R_PPC64_ADDR16_DS:
6078 case R_PPC64_ADDR16_HA:
6079 case R_PPC64_ADDR16_HI:
6080 case R_PPC64_ADDR16_HIGHER:
6081 case R_PPC64_ADDR16_HIGHERA:
6082 case R_PPC64_ADDR16_HIGHEST:
6083 case R_PPC64_ADDR16_HIGHESTA:
6084 case R_PPC64_ADDR16_LO:
6085 case R_PPC64_ADDR16_LO_DS:
6086 case R_PPC64_ADDR24:
6087 case R_PPC64_ADDR32:
6088 case R_PPC64_UADDR16:
6089 case R_PPC64_UADDR32:
6090 case R_PPC64_UADDR64:
6095 if (local_syms != NULL)
6097 unsigned long r_symndx;
6098 Elf_Internal_Sym *sym;
6099 bfd *ibfd = sec->owner;
6101 r_symndx = ELF64_R_SYM (r_info);
6102 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6107 && (MUST_BE_DYN_RELOC (r_type)
6110 || h->root.type == bfd_link_hash_defweak
6111 || !h->def_regular))))
6112 || (ELIMINATE_COPY_RELOCS
6115 && (h->root.type == bfd_link_hash_defweak
6116 || !h->def_regular)))
6122 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6123 else if (sym_sec != NULL)
6125 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6126 pp = (struct ppc_dyn_relocs **) vpp;
6130 void *vpp = &elf_section_data (sec)->local_dynrel;
6131 pp = (struct ppc_dyn_relocs **) vpp;
6134 while ((p = *pp) != NULL)
6138 if (!MUST_BE_DYN_RELOC (r_type))
6148 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6150 bfd_set_error (bfd_error_bad_value);
6154 /* Remove unused Official Procedure Descriptor entries. Currently we
6155 only remove those associated with functions in discarded link-once
6156 sections, or weakly defined functions that have been overridden. It
6157 would be possible to remove many more entries for statically linked
6161 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6162 bfd_boolean no_opd_opt,
6163 bfd_boolean non_overlapping)
6166 bfd_boolean some_edited = FALSE;
6167 asection *need_pad = NULL;
6169 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6172 Elf_Internal_Rela *relstart, *rel, *relend;
6173 Elf_Internal_Shdr *symtab_hdr;
6174 Elf_Internal_Sym *local_syms;
6175 struct elf_link_hash_entry **sym_hashes;
6179 bfd_boolean need_edit, add_aux_fields;
6180 bfd_size_type cnt_16b = 0;
6182 sec = bfd_get_section_by_name (ibfd, ".opd");
6183 if (sec == NULL || sec->size == 0)
6186 amt = sec->size * sizeof (long) / 8;
6187 opd_adjust = get_opd_info (sec);
6188 if (opd_adjust == NULL)
6190 /* check_relocs hasn't been called. Must be a ld -r link
6191 or --just-symbols object. */
6192 opd_adjust = bfd_alloc (obfd, amt);
6193 if (opd_adjust == NULL)
6195 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
6197 memset (opd_adjust, 0, amt);
6202 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6205 if (sec->output_section == bfd_abs_section_ptr)
6208 /* Look through the section relocs. */
6209 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6213 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6214 sym_hashes = elf_sym_hashes (ibfd);
6216 /* Read the relocations. */
6217 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6219 if (relstart == NULL)
6222 /* First run through the relocs to check they are sane, and to
6223 determine whether we need to edit this opd section. */
6227 relend = relstart + sec->reloc_count;
6228 for (rel = relstart; rel < relend; )
6230 enum elf_ppc64_reloc_type r_type;
6231 unsigned long r_symndx;
6233 struct elf_link_hash_entry *h;
6234 Elf_Internal_Sym *sym;
6236 /* .opd contains a regular array of 16 or 24 byte entries. We're
6237 only interested in the reloc pointing to a function entry
6239 if (rel->r_offset != offset
6240 || rel + 1 >= relend
6241 || (rel + 1)->r_offset != offset + 8)
6243 /* If someone messes with .opd alignment then after a
6244 "ld -r" we might have padding in the middle of .opd.
6245 Also, there's nothing to prevent someone putting
6246 something silly in .opd with the assembler. No .opd
6247 optimization for them! */
6249 (*_bfd_error_handler)
6250 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6255 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6256 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6258 (*_bfd_error_handler)
6259 (_("%B: unexpected reloc type %u in .opd section"),
6265 r_symndx = ELF64_R_SYM (rel->r_info);
6266 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6270 if (sym_sec == NULL || sym_sec->owner == NULL)
6272 const char *sym_name;
6274 sym_name = h->root.root.string;
6276 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6279 (*_bfd_error_handler)
6280 (_("%B: undefined sym `%s' in .opd section"),
6286 /* opd entries are always for functions defined in the
6287 current input bfd. If the symbol isn't defined in the
6288 input bfd, then we won't be using the function in this
6289 bfd; It must be defined in a linkonce section in another
6290 bfd, or is weak. It's also possible that we are
6291 discarding the function due to a linker script /DISCARD/,
6292 which we test for via the output_section. */
6293 if (sym_sec->owner != ibfd
6294 || sym_sec->output_section == bfd_abs_section_ptr)
6299 || (rel + 1 == relend && rel->r_offset == offset + 16))
6301 if (sec->size == offset + 24)
6306 if (rel == relend && sec->size == offset + 16)
6314 if (rel->r_offset == offset + 24)
6316 else if (rel->r_offset != offset + 16)
6318 else if (rel + 1 < relend
6319 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6320 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6325 else if (rel + 2 < relend
6326 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6327 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6336 add_aux_fields = non_overlapping && cnt_16b > 0;
6338 if (need_edit || add_aux_fields)
6340 Elf_Internal_Rela *write_rel;
6341 bfd_byte *rptr, *wptr;
6342 bfd_byte *new_contents = NULL;
6346 /* This seems a waste of time as input .opd sections are all
6347 zeros as generated by gcc, but I suppose there's no reason
6348 this will always be so. We might start putting something in
6349 the third word of .opd entries. */
6350 if ((sec->flags & SEC_IN_MEMORY) == 0)
6353 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6358 if (local_syms != NULL
6359 && symtab_hdr->contents != (unsigned char *) local_syms)
6361 if (elf_section_data (sec)->relocs != relstart)
6365 sec->contents = loc;
6366 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6369 elf_section_data (sec)->relocs = relstart;
6371 new_contents = sec->contents;
6374 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6375 if (new_contents == NULL)
6379 wptr = new_contents;
6380 rptr = sec->contents;
6382 write_rel = relstart;
6386 for (rel = relstart; rel < relend; rel++)
6388 unsigned long r_symndx;
6390 struct elf_link_hash_entry *h;
6391 Elf_Internal_Sym *sym;
6393 r_symndx = ELF64_R_SYM (rel->r_info);
6394 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6398 if (rel->r_offset == offset)
6400 struct ppc_link_hash_entry *fdh = NULL;
6402 /* See if the .opd entry is full 24 byte or
6403 16 byte (with fd_aux entry overlapped with next
6406 if ((rel + 2 == relend && sec->size == offset + 16)
6407 || (rel + 3 < relend
6408 && rel[2].r_offset == offset + 16
6409 && rel[3].r_offset == offset + 24
6410 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6411 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6415 && h->root.root.string[0] == '.')
6417 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6418 ppc_hash_table (info));
6420 && fdh->elf.root.type != bfd_link_hash_defined
6421 && fdh->elf.root.type != bfd_link_hash_defweak)
6425 skip = (sym_sec->owner != ibfd
6426 || sym_sec->output_section == bfd_abs_section_ptr);
6429 if (fdh != NULL && sym_sec->owner == ibfd)
6431 /* Arrange for the function descriptor sym
6433 fdh->elf.root.u.def.value = 0;
6434 fdh->elf.root.u.def.section = sym_sec;
6436 opd_adjust[rel->r_offset / 8] = -1;
6440 /* We'll be keeping this opd entry. */
6444 /* Redefine the function descriptor symbol to
6445 this location in the opd section. It is
6446 necessary to update the value here rather
6447 than using an array of adjustments as we do
6448 for local symbols, because various places
6449 in the generic ELF code use the value
6450 stored in u.def.value. */
6451 fdh->elf.root.u.def.value = wptr - new_contents;
6452 fdh->adjust_done = 1;
6455 /* Local syms are a bit tricky. We could
6456 tweak them as they can be cached, but
6457 we'd need to look through the local syms
6458 for the function descriptor sym which we
6459 don't have at the moment. So keep an
6460 array of adjustments. */
6461 opd_adjust[rel->r_offset / 8]
6462 = (wptr - new_contents) - (rptr - sec->contents);
6465 memcpy (wptr, rptr, opd_ent_size);
6466 wptr += opd_ent_size;
6467 if (add_aux_fields && opd_ent_size == 16)
6469 memset (wptr, '\0', 8);
6473 rptr += opd_ent_size;
6474 offset += opd_ent_size;
6479 if (!info->relocatable
6480 && !dec_dynrel_count (rel->r_info, sec, info,
6486 /* We need to adjust any reloc offsets to point to the
6487 new opd entries. While we're at it, we may as well
6488 remove redundant relocs. */
6489 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6490 if (write_rel != rel)
6491 memcpy (write_rel, rel, sizeof (*rel));
6496 sec->size = wptr - new_contents;
6497 sec->reloc_count = write_rel - relstart;
6500 free (sec->contents);
6501 sec->contents = new_contents;
6504 /* Fudge the size too, as this is used later in
6505 elf_bfd_final_link if we are emitting relocs. */
6506 elf_section_data (sec)->rel_hdr.sh_size
6507 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6508 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6511 else if (elf_section_data (sec)->relocs != relstart)
6514 if (local_syms != NULL
6515 && symtab_hdr->contents != (unsigned char *) local_syms)
6517 if (!info->keep_memory)
6520 symtab_hdr->contents = (unsigned char *) local_syms;
6525 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6527 /* If we are doing a final link and the last .opd entry is just 16 byte
6528 long, add a 8 byte padding after it. */
6529 if (need_pad != NULL && !info->relocatable)
6533 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6535 BFD_ASSERT (need_pad->size > 0);
6537 p = bfd_malloc (need_pad->size + 8);
6541 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6542 p, 0, need_pad->size))
6545 need_pad->contents = p;
6546 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6550 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6554 need_pad->contents = p;
6557 memset (need_pad->contents + need_pad->size, 0, 8);
6558 need_pad->size += 8;
6564 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6567 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6569 struct ppc_link_hash_table *htab;
6571 htab = ppc_hash_table (info);
6572 if (htab->tls_get_addr != NULL)
6574 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6576 while (h->elf.root.type == bfd_link_hash_indirect
6577 || h->elf.root.type == bfd_link_hash_warning)
6578 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6580 htab->tls_get_addr = h;
6582 if (htab->tls_get_addr_fd == NULL
6584 && h->oh->is_func_descriptor
6585 && (h->oh->elf.root.type == bfd_link_hash_defined
6586 || h->oh->elf.root.type == bfd_link_hash_defweak))
6587 htab->tls_get_addr_fd = h->oh;
6590 if (htab->tls_get_addr_fd != NULL)
6592 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6594 while (h->elf.root.type == bfd_link_hash_indirect
6595 || h->elf.root.type == bfd_link_hash_warning)
6596 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6598 htab->tls_get_addr_fd = h;
6601 return _bfd_elf_tls_setup (obfd, info);
6604 /* Run through all the TLS relocs looking for optimization
6605 opportunities. The linker has been hacked (see ppc64elf.em) to do
6606 a preliminary section layout so that we know the TLS segment
6607 offsets. We can't optimize earlier because some optimizations need
6608 to know the tp offset, and we need to optimize before allocating
6609 dynamic relocations. */
6612 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6616 struct ppc_link_hash_table *htab;
6618 if (info->relocatable || info->shared)
6621 htab = ppc_hash_table (info);
6622 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6624 Elf_Internal_Sym *locsyms = NULL;
6626 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6627 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6629 Elf_Internal_Rela *relstart, *rel, *relend;
6630 int expecting_tls_get_addr;
6632 /* Read the relocations. */
6633 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6635 if (relstart == NULL)
6638 expecting_tls_get_addr = 0;
6639 relend = relstart + sec->reloc_count;
6640 for (rel = relstart; rel < relend; rel++)
6642 enum elf_ppc64_reloc_type r_type;
6643 unsigned long r_symndx;
6644 struct elf_link_hash_entry *h;
6645 Elf_Internal_Sym *sym;
6648 char tls_set, tls_clear, tls_type = 0;
6650 bfd_boolean ok_tprel, is_local;
6652 r_symndx = ELF64_R_SYM (rel->r_info);
6653 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6657 if (elf_section_data (sec)->relocs != relstart)
6660 && (elf_tdata (ibfd)->symtab_hdr.contents
6661 != (unsigned char *) locsyms))
6668 if (h->root.type != bfd_link_hash_defined
6669 && h->root.type != bfd_link_hash_defweak)
6671 value = h->root.u.def.value;
6674 /* Symbols referenced by TLS relocs must be of type
6675 STT_TLS. So no need for .opd local sym adjust. */
6676 value = sym->st_value;
6684 value += sym_sec->output_offset;
6685 value += sym_sec->output_section->vma;
6686 value -= htab->elf.tls_sec->vma;
6687 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6688 < (bfd_vma) 1 << 32);
6691 r_type = ELF64_R_TYPE (rel->r_info);
6694 case R_PPC64_GOT_TLSLD16:
6695 case R_PPC64_GOT_TLSLD16_LO:
6696 case R_PPC64_GOT_TLSLD16_HI:
6697 case R_PPC64_GOT_TLSLD16_HA:
6698 /* These relocs should never be against a symbol
6699 defined in a shared lib. Leave them alone if
6700 that turns out to be the case. */
6701 ppc64_tlsld_got (ibfd)->refcount -= 1;
6708 tls_type = TLS_TLS | TLS_LD;
6709 expecting_tls_get_addr = 1;
6712 case R_PPC64_GOT_TLSGD16:
6713 case R_PPC64_GOT_TLSGD16_LO:
6714 case R_PPC64_GOT_TLSGD16_HI:
6715 case R_PPC64_GOT_TLSGD16_HA:
6721 tls_set = TLS_TLS | TLS_TPRELGD;
6723 tls_type = TLS_TLS | TLS_GD;
6724 expecting_tls_get_addr = 1;
6727 case R_PPC64_GOT_TPREL16_DS:
6728 case R_PPC64_GOT_TPREL16_LO_DS:
6729 case R_PPC64_GOT_TPREL16_HI:
6730 case R_PPC64_GOT_TPREL16_HA:
6731 expecting_tls_get_addr = 0;
6736 tls_clear = TLS_TPREL;
6737 tls_type = TLS_TLS | TLS_TPREL;
6744 case R_PPC64_REL14_BRTAKEN:
6745 case R_PPC64_REL14_BRNTAKEN:
6748 && (h == &htab->tls_get_addr->elf
6749 || h == &htab->tls_get_addr_fd->elf))
6751 if (!expecting_tls_get_addr
6753 && ((ELF64_R_TYPE (rel[-1].r_info)
6755 || (ELF64_R_TYPE (rel[-1].r_info)
6756 == R_PPC64_TOC16_LO)))
6758 /* Check for toc tls entries. */
6762 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6766 if (toc_tls != NULL)
6767 expecting_tls_get_addr = retval > 1;
6770 if (expecting_tls_get_addr)
6772 struct plt_entry *ent;
6773 for (ent = h->plt.plist; ent; ent = ent->next)
6774 if (ent->addend == 0)
6776 if (ent->plt.refcount > 0)
6777 ent->plt.refcount -= 1;
6782 expecting_tls_get_addr = 0;
6785 case R_PPC64_TPREL64:
6786 expecting_tls_get_addr = 0;
6790 tls_set = TLS_EXPLICIT;
6791 tls_clear = TLS_TPREL;
6797 case R_PPC64_DTPMOD64:
6798 expecting_tls_get_addr = 0;
6799 if (rel + 1 < relend
6801 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6802 && rel[1].r_offset == rel->r_offset + 8)
6806 tls_set = TLS_EXPLICIT | TLS_GD;
6809 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6818 tls_set = TLS_EXPLICIT;
6824 expecting_tls_get_addr = 0;
6828 if ((tls_set & TLS_EXPLICIT) == 0)
6830 struct got_entry *ent;
6832 /* Adjust got entry for this reloc. */
6836 ent = elf_local_got_ents (ibfd)[r_symndx];
6838 for (; ent != NULL; ent = ent->next)
6839 if (ent->addend == rel->r_addend
6840 && ent->owner == ibfd
6841 && ent->tls_type == tls_type)
6848 /* We managed to get rid of a got entry. */
6849 if (ent->got.refcount > 0)
6850 ent->got.refcount -= 1;
6855 /* If we got rid of a DTPMOD/DTPREL reloc pair then
6856 we'll lose one or two dyn relocs. */
6857 if (!dec_dynrel_count (rel->r_info, sec, info,
6861 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6863 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
6869 *tls_mask |= tls_set;
6870 *tls_mask &= ~tls_clear;
6873 if (elf_section_data (sec)->relocs != relstart)
6878 && (elf_tdata (ibfd)->symtab_hdr.contents
6879 != (unsigned char *) locsyms))
6881 if (!info->keep_memory)
6884 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6890 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6891 the values of any global symbols in a toc section that has been
6892 edited. Globals in toc sections should be a rarity, so this function
6893 sets a flag if any are found in toc sections other than the one just
6894 edited, so that futher hash table traversals can be avoided. */
6896 struct adjust_toc_info
6899 unsigned long *skip;
6900 bfd_boolean global_toc_syms;
6904 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6906 struct ppc_link_hash_entry *eh;
6907 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6909 if (h->root.type == bfd_link_hash_indirect)
6912 if (h->root.type == bfd_link_hash_warning)
6913 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6915 if (h->root.type != bfd_link_hash_defined
6916 && h->root.type != bfd_link_hash_defweak)
6919 eh = (struct ppc_link_hash_entry *) h;
6920 if (eh->adjust_done)
6923 if (eh->elf.root.u.def.section == toc_inf->toc)
6925 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6926 if (skip != (unsigned long) -1)
6927 eh->elf.root.u.def.value -= skip;
6930 (*_bfd_error_handler)
6931 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6932 eh->elf.root.u.def.section = &bfd_abs_section;
6933 eh->elf.root.u.def.value = 0;
6935 eh->adjust_done = 1;
6937 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6938 toc_inf->global_toc_syms = TRUE;
6943 /* Examine all relocs referencing .toc sections in order to remove
6944 unused .toc entries. */
6947 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6950 struct adjust_toc_info toc_inf;
6952 toc_inf.global_toc_syms = TRUE;
6953 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6955 asection *toc, *sec;
6956 Elf_Internal_Shdr *symtab_hdr;
6957 Elf_Internal_Sym *local_syms;
6958 struct elf_link_hash_entry **sym_hashes;
6959 Elf_Internal_Rela *relstart, *rel;
6960 unsigned long *skip, *drop;
6961 unsigned char *used;
6962 unsigned char *keep, last, some_unused;
6964 toc = bfd_get_section_by_name (ibfd, ".toc");
6967 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6968 || elf_discarded_section (toc))
6972 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6973 sym_hashes = elf_sym_hashes (ibfd);
6975 /* Look at sections dropped from the final link. */
6978 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6980 if (sec->reloc_count == 0
6981 || !elf_discarded_section (sec)
6982 || get_opd_info (sec)
6983 || (sec->flags & SEC_ALLOC) == 0
6984 || (sec->flags & SEC_DEBUGGING) != 0)
6987 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6988 if (relstart == NULL)
6991 /* Run through the relocs to see which toc entries might be
6993 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6995 enum elf_ppc64_reloc_type r_type;
6996 unsigned long r_symndx;
6998 struct elf_link_hash_entry *h;
6999 Elf_Internal_Sym *sym;
7002 r_type = ELF64_R_TYPE (rel->r_info);
7009 case R_PPC64_TOC16_LO:
7010 case R_PPC64_TOC16_HI:
7011 case R_PPC64_TOC16_HA:
7012 case R_PPC64_TOC16_DS:
7013 case R_PPC64_TOC16_LO_DS:
7017 r_symndx = ELF64_R_SYM (rel->r_info);
7018 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7026 val = h->root.u.def.value;
7028 val = sym->st_value;
7029 val += rel->r_addend;
7031 if (val >= toc->size)
7034 /* Anything in the toc ought to be aligned to 8 bytes.
7035 If not, don't mark as unused. */
7041 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7049 if (elf_section_data (sec)->relocs != relstart)
7056 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7060 if (local_syms != NULL
7061 && symtab_hdr->contents != (unsigned char *) local_syms)
7065 && elf_section_data (sec)->relocs != relstart)
7072 /* Now check all kept sections that might reference the toc. */
7073 for (sec = ibfd->sections;
7075 /* Check the toc itself last. */
7076 sec = (sec == toc ? NULL
7077 : sec->next == toc && sec->next->next ? sec->next->next
7078 : sec->next == NULL ? toc
7083 if (sec->reloc_count == 0
7084 || elf_discarded_section (sec)
7085 || get_opd_info (sec)
7086 || (sec->flags & SEC_ALLOC) == 0
7087 || (sec->flags & SEC_DEBUGGING) != 0)
7090 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7091 if (relstart == NULL)
7094 /* Mark toc entries referenced as used. */
7097 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7099 enum elf_ppc64_reloc_type r_type;
7100 unsigned long r_symndx;
7102 struct elf_link_hash_entry *h;
7103 Elf_Internal_Sym *sym;
7106 r_type = ELF64_R_TYPE (rel->r_info);
7110 case R_PPC64_TOC16_LO:
7111 case R_PPC64_TOC16_HI:
7112 case R_PPC64_TOC16_HA:
7113 case R_PPC64_TOC16_DS:
7114 case R_PPC64_TOC16_LO_DS:
7115 /* In case we're taking addresses of toc entries. */
7116 case R_PPC64_ADDR64:
7123 r_symndx = ELF64_R_SYM (rel->r_info);
7124 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7135 val = h->root.u.def.value;
7137 val = sym->st_value;
7138 val += rel->r_addend;
7140 if (val >= toc->size)
7143 /* For the toc section, we only mark as used if
7144 this entry itself isn't unused. */
7147 && (used[rel->r_offset >> 3]
7148 || !skip[rel->r_offset >> 3]))
7149 /* Do all the relocs again, to catch reference
7158 /* Merge the used and skip arrays. Assume that TOC
7159 doublewords not appearing as either used or unused belong
7160 to to an entry more than one doubleword in size. */
7161 for (drop = skip, keep = used, last = 0, some_unused = 0;
7162 drop < skip + (toc->size + 7) / 8;
7183 bfd_byte *contents, *src;
7186 /* Shuffle the toc contents, and at the same time convert the
7187 skip array from booleans into offsets. */
7188 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7191 elf_section_data (toc)->this_hdr.contents = contents;
7193 for (src = contents, off = 0, drop = skip;
7194 src < contents + toc->size;
7199 *drop = (unsigned long) -1;
7205 memcpy (src - off, src, 8);
7208 toc->rawsize = toc->size;
7209 toc->size = src - contents - off;
7211 if (toc->reloc_count != 0)
7213 Elf_Internal_Rela *wrel;
7216 /* Read toc relocs. */
7217 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7219 if (relstart == NULL)
7222 /* Remove unused toc relocs, and adjust those we keep. */
7224 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7225 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7227 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7228 wrel->r_info = rel->r_info;
7229 wrel->r_addend = rel->r_addend;
7232 else if (!dec_dynrel_count (rel->r_info, toc, info,
7233 &local_syms, NULL, NULL))
7236 toc->reloc_count = wrel - relstart;
7237 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7238 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7239 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7242 /* Adjust addends for relocs against the toc section sym. */
7243 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7245 if (sec->reloc_count == 0
7246 || elf_discarded_section (sec))
7249 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7251 if (relstart == NULL)
7254 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7256 enum elf_ppc64_reloc_type r_type;
7257 unsigned long r_symndx;
7259 struct elf_link_hash_entry *h;
7260 Elf_Internal_Sym *sym;
7262 r_type = ELF64_R_TYPE (rel->r_info);
7269 case R_PPC64_TOC16_LO:
7270 case R_PPC64_TOC16_HI:
7271 case R_PPC64_TOC16_HA:
7272 case R_PPC64_TOC16_DS:
7273 case R_PPC64_TOC16_LO_DS:
7274 case R_PPC64_ADDR64:
7278 r_symndx = ELF64_R_SYM (rel->r_info);
7279 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7283 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7286 rel->r_addend -= skip[rel->r_addend >> 3];
7290 /* We shouldn't have local or global symbols defined in the TOC,
7291 but handle them anyway. */
7292 if (local_syms != NULL)
7294 Elf_Internal_Sym *sym;
7296 for (sym = local_syms;
7297 sym < local_syms + symtab_hdr->sh_info;
7299 if (sym->st_shndx != SHN_UNDEF
7300 && (sym->st_shndx < SHN_LORESERVE
7301 || sym->st_shndx > SHN_HIRESERVE)
7302 && sym->st_value != 0
7303 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7305 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7306 sym->st_value -= skip[sym->st_value >> 3];
7309 (*_bfd_error_handler)
7310 (_("%s defined in removed toc entry"),
7311 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7314 sym->st_shndx = SHN_ABS;
7316 symtab_hdr->contents = (unsigned char *) local_syms;
7320 /* Finally, adjust any global syms defined in the toc. */
7321 if (toc_inf.global_toc_syms)
7324 toc_inf.skip = skip;
7325 toc_inf.global_toc_syms = FALSE;
7326 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7331 if (local_syms != NULL
7332 && symtab_hdr->contents != (unsigned char *) local_syms)
7334 if (!info->keep_memory)
7337 symtab_hdr->contents = (unsigned char *) local_syms;
7345 /* Allocate space in .plt, .got and associated reloc sections for
7349 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7351 struct bfd_link_info *info;
7352 struct ppc_link_hash_table *htab;
7354 struct ppc_link_hash_entry *eh;
7355 struct ppc_dyn_relocs *p;
7356 struct got_entry *gent;
7358 if (h->root.type == bfd_link_hash_indirect)
7361 if (h->root.type == bfd_link_hash_warning)
7362 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7364 info = (struct bfd_link_info *) inf;
7365 htab = ppc_hash_table (info);
7367 if (htab->elf.dynamic_sections_created
7369 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
7371 struct plt_entry *pent;
7372 bfd_boolean doneone = FALSE;
7373 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7374 if (pent->plt.refcount > 0)
7376 /* If this is the first .plt entry, make room for the special
7380 s->size += PLT_INITIAL_ENTRY_SIZE;
7382 pent->plt.offset = s->size;
7384 /* Make room for this entry. */
7385 s->size += PLT_ENTRY_SIZE;
7387 /* Make room for the .glink code. */
7390 s->size += GLINK_CALL_STUB_SIZE;
7391 /* We need bigger stubs past index 32767. */
7392 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7396 /* We also need to make an entry in the .rela.plt section. */
7398 s->size += sizeof (Elf64_External_Rela);
7402 pent->plt.offset = (bfd_vma) -1;
7405 h->plt.plist = NULL;
7411 h->plt.plist = NULL;
7415 eh = (struct ppc_link_hash_entry *) h;
7416 /* Run through the TLS GD got entries first if we're changing them
7418 if ((eh->tls_mask & TLS_TPRELGD) != 0)
7419 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7420 if (gent->got.refcount > 0
7421 && (gent->tls_type & TLS_GD) != 0)
7423 /* This was a GD entry that has been converted to TPREL. If
7424 there happens to be a TPREL entry we can use that one. */
7425 struct got_entry *ent;
7426 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7427 if (ent->got.refcount > 0
7428 && (ent->tls_type & TLS_TPREL) != 0
7429 && ent->addend == gent->addend
7430 && ent->owner == gent->owner)
7432 gent->got.refcount = 0;
7436 /* If not, then we'll be using our own TPREL entry. */
7437 if (gent->got.refcount != 0)
7438 gent->tls_type = TLS_TLS | TLS_TPREL;
7441 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7442 if (gent->got.refcount > 0)
7446 /* Make sure this symbol is output as a dynamic symbol.
7447 Undefined weak syms won't yet be marked as dynamic,
7448 nor will all TLS symbols. */
7449 if (h->dynindx == -1
7450 && !h->forced_local)
7452 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7456 if ((gent->tls_type & TLS_LD) != 0
7459 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
7463 s = ppc64_elf_tdata (gent->owner)->got;
7464 gent->got.offset = s->size;
7466 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
7467 dyn = htab->elf.dynamic_sections_created;
7469 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7470 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7471 || h->root.type != bfd_link_hash_undefweak))
7472 ppc64_elf_tdata (gent->owner)->relgot->size
7473 += (gent->tls_type & eh->tls_mask & TLS_GD
7474 ? 2 * sizeof (Elf64_External_Rela)
7475 : sizeof (Elf64_External_Rela));
7478 gent->got.offset = (bfd_vma) -1;
7480 if (eh->dyn_relocs == NULL)
7483 /* In the shared -Bsymbolic case, discard space allocated for
7484 dynamic pc-relative relocs against symbols which turn out to be
7485 defined in regular objects. For the normal shared case, discard
7486 space for relocs that have become local due to symbol visibility
7491 /* Relocs that use pc_count are those that appear on a call insn,
7492 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7493 generated via assembly. We want calls to protected symbols to
7494 resolve directly to the function rather than going via the plt.
7495 If people want function pointer comparisons to work as expected
7496 then they should avoid writing weird assembly. */
7497 if (SYMBOL_CALLS_LOCAL (info, h))
7499 struct ppc_dyn_relocs **pp;
7501 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
7503 p->count -= p->pc_count;
7512 /* Also discard relocs on undefined weak syms with non-default
7514 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7515 && h->root.type == bfd_link_hash_undefweak)
7516 eh->dyn_relocs = NULL;
7518 else if (ELIMINATE_COPY_RELOCS)
7520 /* For the non-shared case, discard space for relocs against
7521 symbols which turn out to need copy relocs or are not
7528 /* Make sure this symbol is output as a dynamic symbol.
7529 Undefined weak syms won't yet be marked as dynamic. */
7530 if (h->dynindx == -1
7531 && !h->forced_local)
7533 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7537 /* If that succeeded, we know we'll be keeping all the
7539 if (h->dynindx != -1)
7543 eh->dyn_relocs = NULL;
7548 /* Finally, allocate space. */
7549 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7551 asection *sreloc = elf_section_data (p->sec)->sreloc;
7552 sreloc->size += p->count * sizeof (Elf64_External_Rela);
7558 /* Find any dynamic relocs that apply to read-only sections. */
7561 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7563 struct ppc_link_hash_entry *eh;
7564 struct ppc_dyn_relocs *p;
7566 if (h->root.type == bfd_link_hash_warning)
7567 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7569 eh = (struct ppc_link_hash_entry *) h;
7570 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7572 asection *s = p->sec->output_section;
7574 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7576 struct bfd_link_info *info = inf;
7578 info->flags |= DF_TEXTREL;
7580 /* Not an error, just cut short the traversal. */
7587 /* Set the sizes of the dynamic sections. */
7590 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7591 struct bfd_link_info *info)
7593 struct ppc_link_hash_table *htab;
7599 htab = ppc_hash_table (info);
7600 dynobj = htab->elf.dynobj;
7604 if (htab->elf.dynamic_sections_created)
7606 /* Set the contents of the .interp section to the interpreter. */
7607 if (info->executable)
7609 s = bfd_get_section_by_name (dynobj, ".interp");
7612 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
7613 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7617 /* Set up .got offsets for local syms, and space for local dynamic
7619 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7621 struct got_entry **lgot_ents;
7622 struct got_entry **end_lgot_ents;
7624 bfd_size_type locsymcount;
7625 Elf_Internal_Shdr *symtab_hdr;
7628 if (!is_ppc64_elf_target (ibfd->xvec))
7631 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7633 s = ppc64_elf_tdata (ibfd)->got;
7634 ppc64_tlsld_got (ibfd)->offset = s->size;
7638 srel = ppc64_elf_tdata (ibfd)->relgot;
7639 srel->size += sizeof (Elf64_External_Rela);
7643 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7645 for (s = ibfd->sections; s != NULL; s = s->next)
7647 struct ppc_dyn_relocs *p;
7649 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
7651 if (!bfd_is_abs_section (p->sec)
7652 && bfd_is_abs_section (p->sec->output_section))
7654 /* Input section has been discarded, either because
7655 it is a copy of a linkonce section or due to
7656 linker script /DISCARD/, so we'll be discarding
7659 else if (p->count != 0)
7661 srel = elf_section_data (p->sec)->sreloc;
7662 srel->size += p->count * sizeof (Elf64_External_Rela);
7663 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7664 info->flags |= DF_TEXTREL;
7669 lgot_ents = elf_local_got_ents (ibfd);
7673 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7674 locsymcount = symtab_hdr->sh_info;
7675 end_lgot_ents = lgot_ents + locsymcount;
7676 lgot_masks = (char *) end_lgot_ents;
7677 s = ppc64_elf_tdata (ibfd)->got;
7678 srel = ppc64_elf_tdata (ibfd)->relgot;
7679 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
7681 struct got_entry *ent;
7683 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7684 if (ent->got.refcount > 0)
7686 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
7688 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
7690 ppc64_tlsld_got (ibfd)->offset = s->size;
7693 srel->size += sizeof (Elf64_External_Rela);
7695 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
7699 ent->got.offset = s->size;
7700 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
7704 srel->size += 2 * sizeof (Elf64_External_Rela);
7710 srel->size += sizeof (Elf64_External_Rela);
7715 ent->got.offset = (bfd_vma) -1;
7719 /* Allocate global sym .plt and .got entries, and space for global
7720 sym dynamic relocs. */
7721 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
7723 /* We now have determined the sizes of the various dynamic sections.
7724 Allocate memory for them. */
7726 for (s = dynobj->sections; s != NULL; s = s->next)
7728 if ((s->flags & SEC_LINKER_CREATED) == 0)
7731 if (s == htab->brlt || s == htab->relbrlt)
7732 /* These haven't been allocated yet; don't strip. */
7734 else if (s == htab->got
7737 || s == htab->dynbss)
7739 /* Strip this section if we don't need it; see the
7742 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
7746 if (s != htab->relplt)
7749 /* We use the reloc_count field as a counter if we need
7750 to copy relocs into the output file. */
7756 /* It's not one of our sections, so don't allocate space. */
7762 /* If we don't need this section, strip it from the
7763 output file. This is mostly to handle .rela.bss and
7764 .rela.plt. We must create both sections in
7765 create_dynamic_sections, because they must be created
7766 before the linker maps input sections to output
7767 sections. The linker does that before
7768 adjust_dynamic_symbol is called, and it is that
7769 function which decides whether anything needs to go
7770 into these sections. */
7771 s->flags |= SEC_EXCLUDE;
7775 if ((s->flags & SEC_HAS_CONTENTS) == 0)
7778 /* Allocate memory for the section contents. We use bfd_zalloc
7779 here in case unused entries are not reclaimed before the
7780 section's contents are written out. This should not happen,
7781 but this way if it does we get a R_PPC64_NONE reloc in .rela
7782 sections instead of garbage.
7783 We also rely on the section contents being zero when writing
7785 s->contents = bfd_zalloc (dynobj, s->size);
7786 if (s->contents == NULL)
7790 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7792 if (!is_ppc64_elf_target (ibfd->xvec))
7795 s = ppc64_elf_tdata (ibfd)->got;
7796 if (s != NULL && s != htab->got)
7799 s->flags |= SEC_EXCLUDE;
7802 s->contents = bfd_zalloc (ibfd, s->size);
7803 if (s->contents == NULL)
7807 s = ppc64_elf_tdata (ibfd)->relgot;
7811 s->flags |= SEC_EXCLUDE;
7814 s->contents = bfd_zalloc (ibfd, s->size);
7815 if (s->contents == NULL)
7823 if (htab->elf.dynamic_sections_created)
7825 /* Add some entries to the .dynamic section. We fill in the
7826 values later, in ppc64_elf_finish_dynamic_sections, but we
7827 must add the entries now so that we get the correct size for
7828 the .dynamic section. The DT_DEBUG entry is filled in by the
7829 dynamic linker and used by the debugger. */
7830 #define add_dynamic_entry(TAG, VAL) \
7831 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7833 if (info->executable)
7835 if (!add_dynamic_entry (DT_DEBUG, 0))
7839 if (htab->plt != NULL && htab->plt->size != 0)
7841 if (!add_dynamic_entry (DT_PLTGOT, 0)
7842 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7843 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
7844 || !add_dynamic_entry (DT_JMPREL, 0)
7845 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
7851 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7852 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
7858 if (!add_dynamic_entry (DT_RELA, 0)
7859 || !add_dynamic_entry (DT_RELASZ, 0)
7860 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
7863 /* If any dynamic relocs apply to a read-only section,
7864 then we need a DT_TEXTREL entry. */
7865 if ((info->flags & DF_TEXTREL) == 0)
7866 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
7868 if ((info->flags & DF_TEXTREL) != 0)
7870 if (!add_dynamic_entry (DT_TEXTREL, 0))
7875 #undef add_dynamic_entry
7880 /* Determine the type of stub needed, if any, for a call. */
7882 static inline enum ppc_stub_type
7883 ppc_type_of_stub (asection *input_sec,
7884 const Elf_Internal_Rela *rel,
7885 struct ppc_link_hash_entry **hash,
7886 bfd_vma destination)
7888 struct ppc_link_hash_entry *h = *hash;
7890 bfd_vma branch_offset;
7891 bfd_vma max_branch_offset;
7892 enum elf_ppc64_reloc_type r_type;
7896 struct ppc_link_hash_entry *fdh = h;
7898 && fdh->oh->is_func_descriptor)
7901 if (fdh->elf.dynindx != -1)
7903 struct plt_entry *ent;
7905 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
7906 if (ent->addend == rel->r_addend
7907 && ent->plt.offset != (bfd_vma) -1)
7910 return ppc_stub_plt_call;
7914 /* Here, we know we don't have a plt entry. If we don't have a
7915 either a defined function descriptor or a defined entry symbol
7916 in a regular object file, then it is pointless trying to make
7917 any other type of stub. */
7918 if (!((fdh->elf.root.type == bfd_link_hash_defined
7919 || fdh->elf.root.type == bfd_link_hash_defweak)
7920 && fdh->elf.root.u.def.section->output_section != NULL)
7921 && !((h->elf.root.type == bfd_link_hash_defined
7922 || h->elf.root.type == bfd_link_hash_defweak)
7923 && h->elf.root.u.def.section->output_section != NULL))
7924 return ppc_stub_none;
7927 /* Determine where the call point is. */
7928 location = (input_sec->output_offset
7929 + input_sec->output_section->vma
7932 branch_offset = destination - location;
7933 r_type = ELF64_R_TYPE (rel->r_info);
7935 /* Determine if a long branch stub is needed. */
7936 max_branch_offset = 1 << 25;
7937 if (r_type != R_PPC64_REL24)
7938 max_branch_offset = 1 << 15;
7940 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7941 /* We need a stub. Figure out whether a long_branch or plt_branch
7943 return ppc_stub_long_branch;
7945 return ppc_stub_none;
7948 /* Build a .plt call stub. */
7950 static inline bfd_byte *
7951 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
7953 #define PPC_LO(v) ((v) & 0xffff)
7954 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7955 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7957 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
7958 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
7959 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7960 if (PPC_HA (offset + 8) != PPC_HA (offset))
7961 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7963 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7964 if (PPC_HA (offset + 8) != PPC_HA (offset))
7965 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7967 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7968 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7969 bfd_put_32 (obfd, BCTR, p), p += 4;
7974 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7976 struct ppc_stub_hash_entry *stub_entry;
7977 struct ppc_branch_hash_entry *br_entry;
7978 struct bfd_link_info *info;
7979 struct ppc_link_hash_table *htab;
7983 struct plt_entry *ent;
7987 /* Massage our args to the form they really have. */
7988 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7991 htab = ppc_hash_table (info);
7993 /* Make a note of the offset within the stubs for this entry. */
7994 stub_entry->stub_offset = stub_entry->stub_sec->size;
7995 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
7997 htab->stub_count[stub_entry->stub_type - 1] += 1;
7998 switch (stub_entry->stub_type)
8000 case ppc_stub_long_branch:
8001 case ppc_stub_long_branch_r2off:
8002 /* Branches are relative. This is where we are going to. */
8003 off = dest = (stub_entry->target_value
8004 + stub_entry->target_section->output_offset
8005 + stub_entry->target_section->output_section->vma);
8007 /* And this is where we are coming from. */
8008 off -= (stub_entry->stub_offset
8009 + stub_entry->stub_sec->output_offset
8010 + stub_entry->stub_sec->output_section->vma);
8012 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
8018 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8019 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8020 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
8022 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8024 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
8029 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
8031 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8033 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8034 stub_entry->root.string);
8035 htab->stub_error = TRUE;
8039 if (info->emitrelocations)
8041 Elf_Internal_Rela *relocs, *r;
8042 struct bfd_elf_section_data *elfsec_data;
8044 elfsec_data = elf_section_data (stub_entry->stub_sec);
8045 relocs = elfsec_data->relocs;
8048 bfd_size_type relsize;
8049 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8050 relocs = bfd_alloc (htab->stub_bfd, relsize);
8053 elfsec_data->relocs = relocs;
8054 elfsec_data->rel_hdr.sh_size = relsize;
8055 elfsec_data->rel_hdr.sh_entsize = 24;
8056 stub_entry->stub_sec->reloc_count = 0;
8058 r = relocs + stub_entry->stub_sec->reloc_count;
8059 stub_entry->stub_sec->reloc_count += 1;
8060 r->r_offset = loc - stub_entry->stub_sec->contents;
8061 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8063 if (stub_entry->h != NULL)
8065 struct elf_link_hash_entry **hashes;
8066 unsigned long symndx;
8067 struct ppc_link_hash_entry *h;
8069 hashes = elf_sym_hashes (htab->stub_bfd);
8072 bfd_size_type hsize;
8074 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8075 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8078 elf_sym_hashes (htab->stub_bfd) = hashes;
8079 htab->stub_globals = 1;
8081 symndx = htab->stub_globals++;
8083 hashes[symndx] = &h->elf;
8084 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8085 if (h->oh != NULL && h->oh->is_func)
8087 if (h->elf.root.u.def.section != stub_entry->target_section)
8088 /* H is an opd symbol. The addend must be zero. */
8092 off = (h->elf.root.u.def.value
8093 + h->elf.root.u.def.section->output_offset
8094 + h->elf.root.u.def.section->output_section->vma);
8101 case ppc_stub_plt_branch:
8102 case ppc_stub_plt_branch_r2off:
8103 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8104 stub_entry->root.string + 9,
8106 if (br_entry == NULL)
8108 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
8109 stub_entry->root.string);
8110 htab->stub_error = TRUE;
8114 off = (stub_entry->target_value
8115 + stub_entry->target_section->output_offset
8116 + stub_entry->target_section->output_section->vma);
8118 bfd_put_64 (htab->brlt->owner, off,
8119 htab->brlt->contents + br_entry->offset);
8121 if (htab->relbrlt != NULL)
8123 /* Create a reloc for the branch lookup table entry. */
8124 Elf_Internal_Rela rela;
8127 rela.r_offset = (br_entry->offset
8128 + htab->brlt->output_offset
8129 + htab->brlt->output_section->vma);
8130 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8131 rela.r_addend = off;
8133 rl = htab->relbrlt->contents;
8134 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8135 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
8138 off = (br_entry->offset
8139 + htab->brlt->output_offset
8140 + htab->brlt->output_section->vma
8141 - elf_gp (htab->brlt->output_section->owner)
8142 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8144 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8146 (*_bfd_error_handler)
8147 (_("linkage table error against `%s'"),
8148 stub_entry->root.string);
8149 bfd_set_error (bfd_error_bad_value);
8150 htab->stub_error = TRUE;
8155 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8157 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8159 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8166 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8167 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8168 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
8170 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8172 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8174 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8176 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
8180 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
8182 bfd_put_32 (htab->stub_bfd, BCTR, loc);
8185 case ppc_stub_plt_call:
8186 /* Do the best we can for shared libraries built without
8187 exporting ".foo" for each "foo". This can happen when symbol
8188 versioning scripts strip all bar a subset of symbols. */
8189 if (stub_entry->h->oh != NULL
8190 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
8191 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
8193 /* Point the symbol at the stub. There may be multiple stubs,
8194 we don't really care; The main thing is to make this sym
8195 defined somewhere. Maybe defining the symbol in the stub
8196 section is a silly idea. If we didn't do this, htab->top_id
8198 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8199 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8200 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
8203 /* Now build the stub. */
8205 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8206 if (ent->addend == stub_entry->addend)
8208 off = ent->plt.offset;
8211 if (off >= (bfd_vma) -2)
8214 off &= ~ (bfd_vma) 1;
8215 off += (htab->plt->output_offset
8216 + htab->plt->output_section->vma
8217 - elf_gp (htab->plt->output_section->owner)
8218 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8220 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8222 (*_bfd_error_handler)
8223 (_("linkage table error against `%s'"),
8224 stub_entry->h->elf.root.root.string);
8225 bfd_set_error (bfd_error_bad_value);
8226 htab->stub_error = TRUE;
8230 p = build_plt_stub (htab->stub_bfd, loc, off);
8239 stub_entry->stub_sec->size += size;
8241 if (htab->emit_stub_syms)
8243 struct elf_link_hash_entry *h;
8246 const char *const stub_str[] = { "long_branch",
8247 "long_branch_r2off",
8252 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8253 len2 = strlen (stub_entry->root.string);
8254 name = bfd_malloc (len1 + len2 + 2);
8257 memcpy (name, stub_entry->root.string, 9);
8258 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8259 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8260 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
8263 if (h->root.type == bfd_link_hash_new)
8265 h->root.type = bfd_link_hash_defined;
8266 h->root.u.def.section = stub_entry->stub_sec;
8267 h->root.u.def.value = stub_entry->stub_offset;
8270 h->ref_regular_nonweak = 1;
8271 h->forced_local = 1;
8279 /* As above, but don't actually build the stub. Just bump offset so
8280 we know stub section sizes, and select plt_branch stubs where
8281 long_branch stubs won't do. */
8284 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8286 struct ppc_stub_hash_entry *stub_entry;
8287 struct bfd_link_info *info;
8288 struct ppc_link_hash_table *htab;
8292 /* Massage our args to the form they really have. */
8293 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8296 htab = ppc_hash_table (info);
8298 if (stub_entry->stub_type == ppc_stub_plt_call)
8300 struct plt_entry *ent;
8302 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8303 if (ent->addend == stub_entry->addend)
8305 off = ent->plt.offset & ~(bfd_vma) 1;
8308 if (off >= (bfd_vma) -2)
8310 off += (htab->plt->output_offset
8311 + htab->plt->output_section->vma
8312 - elf_gp (htab->plt->output_section->owner)
8313 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8315 size = PLT_CALL_STUB_SIZE;
8316 if (PPC_HA (off + 16) != PPC_HA (off))
8321 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8323 off = (stub_entry->target_value
8324 + stub_entry->target_section->output_offset
8325 + stub_entry->target_section->output_section->vma);
8326 off -= (stub_entry->stub_sec->size
8327 + stub_entry->stub_sec->output_offset
8328 + stub_entry->stub_sec->output_section->vma);
8330 /* Reset the stub type from the plt variant in case we now
8331 can reach with a shorter stub. */
8332 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8333 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8336 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8342 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8343 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8345 struct ppc_branch_hash_entry *br_entry;
8347 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8348 stub_entry->root.string + 9,
8350 if (br_entry == NULL)
8352 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8353 stub_entry->root.string);
8354 htab->stub_error = TRUE;
8358 if (br_entry->iter != htab->stub_iteration)
8360 br_entry->iter = htab->stub_iteration;
8361 br_entry->offset = htab->brlt->size;
8362 htab->brlt->size += 8;
8364 if (htab->relbrlt != NULL)
8365 htab->relbrlt->size += sizeof (Elf64_External_Rela);
8368 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
8370 if (stub_entry->stub_type != ppc_stub_plt_branch)
8374 if (info->emitrelocations
8375 && (stub_entry->stub_type == ppc_stub_long_branch
8376 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8377 stub_entry->stub_sec->reloc_count += 1;
8380 stub_entry->stub_sec->size += size;
8384 /* Set up various things so that we can make a list of input sections
8385 for each output section included in the link. Returns -1 on error,
8386 0 when no stubs will be needed, and 1 on success. */
8389 ppc64_elf_setup_section_lists (bfd *output_bfd,
8390 struct bfd_link_info *info,
8394 int top_id, top_index, id;
8396 asection **input_list;
8398 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8400 htab->no_multi_toc = no_multi_toc;
8402 if (htab->brlt == NULL)
8405 /* Find the top input section id. */
8406 for (input_bfd = info->input_bfds, top_id = 3;
8408 input_bfd = input_bfd->link_next)
8410 for (section = input_bfd->sections;
8412 section = section->next)
8414 if (top_id < section->id)
8415 top_id = section->id;
8419 htab->top_id = top_id;
8420 amt = sizeof (struct map_stub) * (top_id + 1);
8421 htab->stub_group = bfd_zmalloc (amt);
8422 if (htab->stub_group == NULL)
8425 /* Set toc_off for com, und, abs and ind sections. */
8426 for (id = 0; id < 3; id++)
8427 htab->stub_group[id].toc_off = TOC_BASE_OFF;
8429 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
8431 /* We can't use output_bfd->section_count here to find the top output
8432 section index as some sections may have been removed, and
8433 strip_excluded_output_sections doesn't renumber the indices. */
8434 for (section = output_bfd->sections, top_index = 0;
8436 section = section->next)
8438 if (top_index < section->index)
8439 top_index = section->index;
8442 htab->top_index = top_index;
8443 amt = sizeof (asection *) * (top_index + 1);
8444 input_list = bfd_zmalloc (amt);
8445 htab->input_list = input_list;
8446 if (input_list == NULL)
8452 /* The linker repeatedly calls this function for each TOC input section
8453 and linker generated GOT section. Group input bfds such that the toc
8454 within a group is less than 64k in size. Will break with cute linker
8455 scripts that play games with dot in the output toc section. */
8458 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
8460 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8462 if (!htab->no_multi_toc)
8464 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8465 bfd_vma off = addr - htab->toc_curr;
8467 if (off + isec->size > 0x10000)
8468 htab->toc_curr = addr;
8470 elf_gp (isec->owner) = (htab->toc_curr
8471 - elf_gp (isec->output_section->owner)
8476 /* Called after the last call to the above function. */
8479 ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
8481 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8483 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8485 /* toc_curr tracks the TOC offset used for code sections below in
8486 ppc64_elf_next_input_section. Start off at 0x8000. */
8487 htab->toc_curr = TOC_BASE_OFF;
8490 /* No toc references were found in ISEC. If the code in ISEC makes no
8491 calls, then there's no need to use toc adjusting stubs when branching
8492 into ISEC. Actually, indirect calls from ISEC are OK as they will
8493 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8494 needed, and 2 if a cyclical call-graph was found but no other reason
8495 for a stub was detected. If called from the top level, a return of
8496 2 means the same as a return of 0. */
8499 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
8501 Elf_Internal_Rela *relstart, *rel;
8502 Elf_Internal_Sym *local_syms;
8504 struct ppc_link_hash_table *htab;
8506 /* We know none of our code bearing sections will need toc stubs. */
8507 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8510 if (isec->size == 0)
8513 if (isec->output_section == NULL)
8516 /* Hack for linux kernel. .fixup contains branches, but only back to
8517 the function that hit an exception. */
8518 if (strcmp (isec->name, ".fixup") == 0)
8521 if (isec->reloc_count == 0)
8524 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8526 if (relstart == NULL)
8529 /* Look for branches to outside of this section. */
8532 htab = ppc_hash_table (info);
8533 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
8535 enum elf_ppc64_reloc_type r_type;
8536 unsigned long r_symndx;
8537 struct elf_link_hash_entry *h;
8538 Elf_Internal_Sym *sym;
8544 r_type = ELF64_R_TYPE (rel->r_info);
8545 if (r_type != R_PPC64_REL24
8546 && r_type != R_PPC64_REL14
8547 && r_type != R_PPC64_REL14_BRTAKEN
8548 && r_type != R_PPC64_REL14_BRNTAKEN)
8551 r_symndx = ELF64_R_SYM (rel->r_info);
8552 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8559 /* Calls to dynamic lib functions go through a plt call stub
8560 that uses r2. Branches to undefined symbols might be a call
8561 using old-style dot symbols that can be satisfied by a plt
8562 call into a new-style dynamic library. */
8563 if (sym_sec == NULL)
8565 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8568 && eh->oh->elf.plt.plist != NULL)
8574 /* Ignore other undefined symbols. */
8578 /* Assume branches to other sections not included in the link need
8579 stubs too, to cover -R and absolute syms. */
8580 if (sym_sec->output_section == NULL)
8587 sym_value = sym->st_value;
8590 if (h->root.type != bfd_link_hash_defined
8591 && h->root.type != bfd_link_hash_defweak)
8593 sym_value = h->root.u.def.value;
8595 sym_value += rel->r_addend;
8597 /* If this branch reloc uses an opd sym, find the code section. */
8598 opd_adjust = get_opd_info (sym_sec);
8599 if (opd_adjust != NULL)
8605 adjust = opd_adjust[sym->st_value / 8];
8607 /* Assume deleted functions won't ever be called. */
8609 sym_value += adjust;
8612 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8613 if (dest == (bfd_vma) -1)
8618 + sym_sec->output_offset
8619 + sym_sec->output_section->vma);
8621 /* Ignore branch to self. */
8622 if (sym_sec == isec)
8625 /* If the called function uses the toc, we need a stub. */
8626 if (sym_sec->has_toc_reloc
8627 || sym_sec->makes_toc_func_call)
8633 /* Assume any branch that needs a long branch stub might in fact
8634 need a plt_branch stub. A plt_branch stub uses r2. */
8635 else if (dest - (isec->output_offset
8636 + isec->output_section->vma
8637 + rel->r_offset) + (1 << 25) >= (2 << 25))
8643 /* If calling back to a section in the process of being tested, we
8644 can't say for sure that no toc adjusting stubs are needed, so
8645 don't return zero. */
8646 else if (sym_sec->call_check_in_progress)
8649 /* Branches to another section that itself doesn't have any TOC
8650 references are OK. Recursively call ourselves to check. */
8651 else if (sym_sec->id <= htab->top_id
8652 && htab->stub_group[sym_sec->id].toc_off == 0)
8656 /* Mark current section as indeterminate, so that other
8657 sections that call back to current won't be marked as
8659 isec->call_check_in_progress = 1;
8660 recur = toc_adjusting_stub_needed (info, sym_sec);
8661 isec->call_check_in_progress = 0;
8665 /* An error. Exit. */
8669 else if (recur <= 1)
8671 /* Known result. Mark as checked and set section flag. */
8672 htab->stub_group[sym_sec->id].toc_off = 1;
8675 sym_sec->makes_toc_func_call = 1;
8682 /* Unknown result. Continue checking. */
8688 if (local_syms != NULL
8689 && (elf_tdata (isec->owner)->symtab_hdr.contents
8690 != (unsigned char *) local_syms))
8692 if (elf_section_data (isec)->relocs != relstart)
8698 /* The linker repeatedly calls this function for each input section,
8699 in the order that input sections are linked into output sections.
8700 Build lists of input sections to determine groupings between which
8701 we may insert linker stubs. */
8704 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
8706 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8708 if ((isec->output_section->flags & SEC_CODE) != 0
8709 && isec->output_section->index <= htab->top_index)
8711 asection **list = htab->input_list + isec->output_section->index;
8712 /* Steal the link_sec pointer for our list. */
8713 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8714 /* This happens to make the list in reverse order,
8715 which is what we want. */
8716 PREV_SEC (isec) = *list;
8720 if (htab->multi_toc_needed)
8722 /* If a code section has a function that uses the TOC then we need
8723 to use the right TOC (obviously). Also, make sure that .opd gets
8724 the correct TOC value for R_PPC64_TOC relocs that don't have or
8725 can't find their function symbol (shouldn't ever happen now). */
8726 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8728 if (elf_gp (isec->owner) != 0)
8729 htab->toc_curr = elf_gp (isec->owner);
8731 else if (htab->stub_group[isec->id].toc_off == 0)
8733 int ret = toc_adjusting_stub_needed (info, isec);
8737 isec->makes_toc_func_call = ret & 1;
8741 /* Functions that don't use the TOC can belong in any TOC group.
8742 Use the last TOC base. This happens to make _init and _fini
8744 htab->stub_group[isec->id].toc_off = htab->toc_curr;
8748 /* See whether we can group stub sections together. Grouping stub
8749 sections may result in fewer stubs. More importantly, we need to
8750 put all .init* and .fini* stubs at the beginning of the .init or
8751 .fini output sections respectively, because glibc splits the
8752 _init and _fini functions into multiple parts. Putting a stub in
8753 the middle of a function is not a good idea. */
8756 group_sections (struct ppc_link_hash_table *htab,
8757 bfd_size_type stub_group_size,
8758 bfd_boolean stubs_always_before_branch)
8760 asection **list = htab->input_list + htab->top_index;
8763 asection *tail = *list;
8764 while (tail != NULL)
8768 bfd_size_type total;
8769 bfd_boolean big_sec;
8774 big_sec = total > stub_group_size;
8776 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
8778 curr_toc = htab->stub_group[tail->id].toc_off;
8780 while ((prev = PREV_SEC (curr)) != NULL
8781 && ((total += curr->output_offset - prev->output_offset)
8783 && htab->stub_group[prev->id].toc_off == curr_toc)
8786 /* OK, the size from the start of CURR to the end is less
8787 than stub_group_size and thus can be handled by one stub
8788 section. (or the tail section is itself larger than
8789 stub_group_size, in which case we may be toast.) We
8790 should really be keeping track of the total size of stubs
8791 added here, as stubs contribute to the final output
8792 section size. That's a little tricky, and this way will
8793 only break if stubs added make the total size more than
8794 2^25, ie. for the default stub_group_size, if stubs total
8795 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8798 prev = PREV_SEC (tail);
8799 /* Set up this stub group. */
8800 htab->stub_group[tail->id].link_sec = curr;
8802 while (tail != curr && (tail = prev) != NULL);
8804 /* But wait, there's more! Input sections up to stub_group_size
8805 bytes before the stub section can be handled by it too.
8806 Don't do this if we have a really large section after the
8807 stubs, as adding more stubs increases the chance that
8808 branches may not reach into the stub section. */
8809 if (!stubs_always_before_branch && !big_sec)
8813 && ((total += tail->output_offset - prev->output_offset)
8815 && htab->stub_group[prev->id].toc_off == curr_toc)
8818 prev = PREV_SEC (tail);
8819 htab->stub_group[tail->id].link_sec = curr;
8825 while (list-- != htab->input_list);
8826 free (htab->input_list);
8830 /* Determine and set the size of the stub section for a final link.
8832 The basic idea here is to examine all the relocations looking for
8833 PC-relative calls to a target that is unreachable with a "bl"
8837 ppc64_elf_size_stubs (bfd *output_bfd,
8838 struct bfd_link_info *info,
8839 bfd_signed_vma group_size,
8840 asection *(*add_stub_section) (const char *, asection *),
8841 void (*layout_sections_again) (void))
8843 bfd_size_type stub_group_size;
8844 bfd_boolean stubs_always_before_branch;
8845 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8847 /* Stash our params away. */
8848 htab->add_stub_section = add_stub_section;
8849 htab->layout_sections_again = layout_sections_again;
8850 stubs_always_before_branch = group_size < 0;
8852 stub_group_size = -group_size;
8854 stub_group_size = group_size;
8855 if (stub_group_size == 1)
8857 /* Default values. */
8858 if (stubs_always_before_branch)
8860 stub_group_size = 0x1e00000;
8861 if (htab->has_14bit_branch)
8862 stub_group_size = 0x7800;
8866 stub_group_size = 0x1c00000;
8867 if (htab->has_14bit_branch)
8868 stub_group_size = 0x7000;
8872 group_sections (htab, stub_group_size, stubs_always_before_branch);
8877 unsigned int bfd_indx;
8880 htab->stub_iteration += 1;
8882 for (input_bfd = info->input_bfds, bfd_indx = 0;
8884 input_bfd = input_bfd->link_next, bfd_indx++)
8886 Elf_Internal_Shdr *symtab_hdr;
8888 Elf_Internal_Sym *local_syms = NULL;
8890 /* We'll need the symbol table in a second. */
8891 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8892 if (symtab_hdr->sh_info == 0)
8895 /* Walk over each section attached to the input bfd. */
8896 for (section = input_bfd->sections;
8898 section = section->next)
8900 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
8902 /* If there aren't any relocs, then there's nothing more
8904 if ((section->flags & SEC_RELOC) == 0
8905 || section->reloc_count == 0)
8908 /* If this section is a link-once section that will be
8909 discarded, then don't create any stubs. */
8910 if (section->output_section == NULL
8911 || section->output_section->owner != output_bfd)
8914 /* Get the relocs. */
8916 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
8918 if (internal_relocs == NULL)
8919 goto error_ret_free_local;
8921 /* Now examine each relocation. */
8922 irela = internal_relocs;
8923 irelaend = irela + section->reloc_count;
8924 for (; irela < irelaend; irela++)
8926 enum elf_ppc64_reloc_type r_type;
8927 unsigned int r_indx;
8928 enum ppc_stub_type stub_type;
8929 struct ppc_stub_hash_entry *stub_entry;
8930 asection *sym_sec, *code_sec;
8932 bfd_vma destination;
8933 bfd_boolean ok_dest;
8934 struct ppc_link_hash_entry *hash;
8935 struct ppc_link_hash_entry *fdh;
8936 struct elf_link_hash_entry *h;
8937 Elf_Internal_Sym *sym;
8939 const asection *id_sec;
8942 r_type = ELF64_R_TYPE (irela->r_info);
8943 r_indx = ELF64_R_SYM (irela->r_info);
8945 if (r_type >= R_PPC64_max)
8947 bfd_set_error (bfd_error_bad_value);
8948 goto error_ret_free_internal;
8951 /* Only look for stubs on branch instructions. */
8952 if (r_type != R_PPC64_REL24
8953 && r_type != R_PPC64_REL14
8954 && r_type != R_PPC64_REL14_BRTAKEN
8955 && r_type != R_PPC64_REL14_BRNTAKEN)
8958 /* Now determine the call target, its name, value,
8960 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8962 goto error_ret_free_internal;
8963 hash = (struct ppc_link_hash_entry *) h;
8970 sym_value = sym->st_value;
8973 else if (hash->elf.root.type == bfd_link_hash_defined
8974 || hash->elf.root.type == bfd_link_hash_defweak)
8976 sym_value = hash->elf.root.u.def.value;
8977 if (sym_sec->output_section != NULL)
8980 else if (hash->elf.root.type == bfd_link_hash_undefweak
8981 || hash->elf.root.type == bfd_link_hash_undefined)
8983 /* Recognise an old ABI func code entry sym, and
8984 use the func descriptor sym instead if it is
8986 if (hash->elf.root.root.string[0] == '.'
8987 && (fdh = get_fdh (hash, htab)) != NULL)
8989 if (fdh->elf.root.type == bfd_link_hash_defined
8990 || fdh->elf.root.type == bfd_link_hash_defweak)
8992 sym_sec = fdh->elf.root.u.def.section;
8993 sym_value = fdh->elf.root.u.def.value;
8994 if (sym_sec->output_section != NULL)
9003 bfd_set_error (bfd_error_bad_value);
9004 goto error_ret_free_internal;
9010 sym_value += irela->r_addend;
9011 destination = (sym_value
9012 + sym_sec->output_offset
9013 + sym_sec->output_section->vma);
9017 opd_adjust = get_opd_info (sym_sec);
9018 if (opd_adjust != NULL)
9024 long adjust = opd_adjust[sym_value / 8];
9027 sym_value += adjust;
9029 dest = opd_entry_value (sym_sec, sym_value,
9030 &code_sec, &sym_value);
9031 if (dest != (bfd_vma) -1)
9036 /* Fixup old ABI sym to point at code
9038 hash->elf.root.type = bfd_link_hash_defweak;
9039 hash->elf.root.u.def.section = code_sec;
9040 hash->elf.root.u.def.value = sym_value;
9045 /* Determine what (if any) linker stub is needed. */
9046 stub_type = ppc_type_of_stub (section, irela, &hash,
9049 if (stub_type != ppc_stub_plt_call)
9051 /* Check whether we need a TOC adjusting stub.
9052 Since the linker pastes together pieces from
9053 different object files when creating the
9054 _init and _fini functions, it may be that a
9055 call to what looks like a local sym is in
9056 fact a call needing a TOC adjustment. */
9057 if (code_sec != NULL
9058 && code_sec->output_section != NULL
9059 && (htab->stub_group[code_sec->id].toc_off
9060 != htab->stub_group[section->id].toc_off)
9061 && (code_sec->has_toc_reloc
9062 || code_sec->makes_toc_func_call))
9063 stub_type = ppc_stub_long_branch_r2off;
9066 if (stub_type == ppc_stub_none)
9069 /* __tls_get_addr calls might be eliminated. */
9070 if (stub_type != ppc_stub_plt_call
9072 && (hash == htab->tls_get_addr
9073 || hash == htab->tls_get_addr_fd)
9074 && section->has_tls_reloc
9075 && irela != internal_relocs)
9080 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
9081 irela - 1, input_bfd))
9082 goto error_ret_free_internal;
9087 /* Support for grouping stub sections. */
9088 id_sec = htab->stub_group[section->id].link_sec;
9090 /* Get the name of this stub. */
9091 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9093 goto error_ret_free_internal;
9095 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
9096 stub_name, FALSE, FALSE);
9097 if (stub_entry != NULL)
9099 /* The proper stub has already been created. */
9104 stub_entry = ppc_add_stub (stub_name, section, htab);
9105 if (stub_entry == NULL)
9108 error_ret_free_internal:
9109 if (elf_section_data (section)->relocs == NULL)
9110 free (internal_relocs);
9111 error_ret_free_local:
9112 if (local_syms != NULL
9113 && (symtab_hdr->contents
9114 != (unsigned char *) local_syms))
9119 stub_entry->stub_type = stub_type;
9120 stub_entry->target_value = sym_value;
9121 stub_entry->target_section = code_sec;
9122 stub_entry->h = hash;
9123 stub_entry->addend = irela->r_addend;
9125 if (stub_entry->h != NULL)
9126 htab->stub_globals += 1;
9129 /* We're done with the internal relocs, free them. */
9130 if (elf_section_data (section)->relocs != internal_relocs)
9131 free (internal_relocs);
9134 if (local_syms != NULL
9135 && symtab_hdr->contents != (unsigned char *) local_syms)
9137 if (!info->keep_memory)
9140 symtab_hdr->contents = (unsigned char *) local_syms;
9144 /* We may have added some stubs. Find out the new size of the
9146 for (stub_sec = htab->stub_bfd->sections;
9148 stub_sec = stub_sec->next)
9149 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9151 stub_sec->rawsize = stub_sec->size;
9153 stub_sec->reloc_count = 0;
9156 htab->brlt->size = 0;
9157 if (htab->relbrlt != NULL)
9158 htab->relbrlt->size = 0;
9160 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
9162 for (stub_sec = htab->stub_bfd->sections;
9164 stub_sec = stub_sec->next)
9165 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9166 && stub_sec->rawsize != stub_sec->size)
9169 /* Exit from this loop when no stubs have been added, and no stubs
9170 have changed size. */
9171 if (stub_sec == NULL)
9174 /* Ask the linker to do its stuff. */
9175 (*htab->layout_sections_again) ();
9178 /* It would be nice to strip htab->brlt from the output if the
9179 section is empty, but it's too late. If we strip sections here,
9180 the dynamic symbol table is corrupted since the section symbol
9181 for the stripped section isn't written. */
9186 /* Called after we have determined section placement. If sections
9187 move, we'll be called again. Provide a value for TOCstart. */
9190 ppc64_elf_toc (bfd *obfd)
9195 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9196 order. The TOC starts where the first of these sections starts. */
9197 s = bfd_get_section_by_name (obfd, ".got");
9199 s = bfd_get_section_by_name (obfd, ".toc");
9201 s = bfd_get_section_by_name (obfd, ".tocbss");
9203 s = bfd_get_section_by_name (obfd, ".plt");
9206 /* This may happen for
9207 o references to TOC base (SYM@toc / TOC[tc0]) without a
9210 o --gc-sections and empty TOC sections
9212 FIXME: Warn user? */
9214 /* Look for a likely section. We probably won't even be
9216 for (s = obfd->sections; s != NULL; s = s->next)
9217 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9218 == (SEC_ALLOC | SEC_SMALL_DATA))
9221 for (s = obfd->sections; s != NULL; s = s->next)
9222 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9223 == (SEC_ALLOC | SEC_SMALL_DATA))
9226 for (s = obfd->sections; s != NULL; s = s->next)
9227 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9230 for (s = obfd->sections; s != NULL; s = s->next)
9231 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9237 TOCstart = s->output_section->vma + s->output_offset;
9242 /* Build all the stubs associated with the current output file.
9243 The stubs are kept in a hash table attached to the main linker
9244 hash table. This function is called via gldelf64ppc_finish. */
9247 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9248 struct bfd_link_info *info,
9251 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9254 int stub_sec_count = 0;
9256 htab->emit_stub_syms = emit_stub_syms;
9258 /* Allocate memory to hold the linker stubs. */
9259 for (stub_sec = htab->stub_bfd->sections;
9261 stub_sec = stub_sec->next)
9262 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9263 && stub_sec->size != 0)
9265 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9266 if (stub_sec->contents == NULL)
9268 /* We want to check that built size is the same as calculated
9269 size. rawsize is a convenient location to use. */
9270 stub_sec->rawsize = stub_sec->size;
9274 if (htab->plt != NULL)
9279 /* Build the .glink plt call stub. */
9280 plt0 = (htab->plt->output_section->vma
9281 + htab->plt->output_offset
9282 - (htab->glink->output_section->vma
9283 + htab->glink->output_offset
9284 + GLINK_CALL_STUB_SIZE));
9285 if (plt0 + 0x80008000 > 0xffffffff)
9287 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9288 bfd_set_error (bfd_error_bad_value);
9292 if (htab->emit_stub_syms)
9294 struct elf_link_hash_entry *h;
9295 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9298 if (h->root.type == bfd_link_hash_new)
9300 h->root.type = bfd_link_hash_defined;
9301 h->root.u.def.section = htab->glink;
9302 h->root.u.def.value = 0;
9305 h->ref_regular_nonweak = 1;
9306 h->forced_local = 1;
9310 p = htab->glink->contents;
9311 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
9313 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
9315 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
9317 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9319 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
9321 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
9323 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
9325 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9327 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
9329 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
9331 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
9333 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
9335 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
9337 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
9339 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
9341 bfd_put_32 (htab->glink->owner, BCTR, p);
9344 /* Build the .glink lazy link call stubs. */
9346 while (p < htab->glink->contents + htab->glink->size)
9350 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9355 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9357 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9360 bfd_put_32 (htab->glink->owner,
9361 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
9365 htab->glink->rawsize = p - htab->glink->contents;
9368 if (htab->brlt->size != 0)
9370 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
9372 if (htab->brlt->contents == NULL)
9375 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
9377 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
9378 htab->relbrlt->size);
9379 if (htab->relbrlt->contents == NULL)
9383 /* Build the stubs as directed by the stub hash table. */
9384 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
9386 for (stub_sec = htab->stub_bfd->sections;
9388 stub_sec = stub_sec->next)
9389 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9391 stub_sec_count += 1;
9392 if (stub_sec->rawsize != stub_sec->size)
9396 if (stub_sec != NULL
9397 || htab->glink->rawsize != htab->glink->size)
9399 htab->stub_error = TRUE;
9400 (*_bfd_error_handler) (_("stubs don't match calculated size"));
9403 if (htab->stub_error)
9408 *stats = bfd_malloc (500);
9412 sprintf (*stats, _("linker stubs in %u group%s\n"
9415 " long branch %lu\n"
9416 " long toc adj %lu\n"
9419 stub_sec_count == 1 ? "" : "s",
9420 htab->stub_count[ppc_stub_long_branch - 1],
9421 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9422 htab->stub_count[ppc_stub_plt_branch - 1],
9423 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9424 htab->stub_count[ppc_stub_plt_call - 1]);
9429 /* This function undoes the changes made by add_symbol_adjust. */
9432 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9434 struct ppc_link_hash_entry *eh;
9436 if (h->root.type == bfd_link_hash_indirect)
9439 if (h->root.type == bfd_link_hash_warning)
9440 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9442 eh = (struct ppc_link_hash_entry *) h;
9443 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9446 eh->elf.root.type = bfd_link_hash_undefined;
9451 ppc64_elf_restore_symbols (struct bfd_link_info *info)
9453 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9454 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9457 /* The RELOCATE_SECTION function is called by the ELF backend linker
9458 to handle the relocations for a section.
9460 The relocs are always passed as Rela structures; if the section
9461 actually uses Rel structures, the r_addend field will always be
9464 This function is responsible for adjust the section contents as
9465 necessary, and (if using Rela relocs and generating a
9466 relocatable output file) adjusting the reloc addend as
9469 This function does not have to worry about setting the reloc
9470 address or the reloc symbol index.
9472 LOCAL_SYMS is a pointer to the swapped in local symbols.
9474 LOCAL_SECTIONS is an array giving the section in the input file
9475 corresponding to the st_shndx field of each local symbol.
9477 The global hash table entry for the global symbols can be found
9478 via elf_sym_hashes (input_bfd).
9480 When generating relocatable output, this function must handle
9481 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9482 going to be the section symbol corresponding to the output
9483 section, which means that the addend must be adjusted
9487 ppc64_elf_relocate_section (bfd *output_bfd,
9488 struct bfd_link_info *info,
9490 asection *input_section,
9492 Elf_Internal_Rela *relocs,
9493 Elf_Internal_Sym *local_syms,
9494 asection **local_sections)
9496 struct ppc_link_hash_table *htab;
9497 Elf_Internal_Shdr *symtab_hdr;
9498 struct elf_link_hash_entry **sym_hashes;
9499 Elf_Internal_Rela *rel;
9500 Elf_Internal_Rela *relend;
9501 Elf_Internal_Rela outrel;
9503 struct got_entry **local_got_ents;
9505 bfd_boolean ret = TRUE;
9507 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9508 bfd_boolean is_power4 = FALSE;
9510 if (info->relocatable)
9513 /* Initialize howto table if needed. */
9514 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9517 htab = ppc_hash_table (info);
9519 /* Don't relocate stub sections. */
9520 if (input_section->owner == htab->stub_bfd)
9523 local_got_ents = elf_local_got_ents (input_bfd);
9524 TOCstart = elf_gp (output_bfd);
9525 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9526 sym_hashes = elf_sym_hashes (input_bfd);
9527 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
9530 relend = relocs + input_section->reloc_count;
9531 for (; rel < relend; rel++)
9533 enum elf_ppc64_reloc_type r_type;
9535 bfd_reloc_status_type r;
9536 Elf_Internal_Sym *sym;
9538 struct elf_link_hash_entry *h_elf;
9539 struct ppc_link_hash_entry *h;
9540 struct ppc_link_hash_entry *fdh;
9541 const char *sym_name;
9542 unsigned long r_symndx, toc_symndx;
9543 char tls_mask, tls_gd, tls_type;
9546 bfd_boolean unresolved_reloc;
9548 unsigned long insn, mask;
9549 struct ppc_stub_hash_entry *stub_entry;
9550 bfd_vma max_br_offset;
9553 r_type = ELF64_R_TYPE (rel->r_info);
9554 r_symndx = ELF64_R_SYM (rel->r_info);
9556 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9557 symbol of the previous ADDR64 reloc. The symbol gives us the
9558 proper TOC base to use. */
9559 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9561 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9563 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9569 unresolved_reloc = FALSE;
9572 if (r_symndx < symtab_hdr->sh_info)
9574 /* It's a local symbol. */
9577 sym = local_syms + r_symndx;
9578 sec = local_sections[r_symndx];
9579 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
9580 sym_type = ELF64_ST_TYPE (sym->st_info);
9581 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
9582 opd_adjust = get_opd_info (sec);
9583 if (opd_adjust != NULL)
9585 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
9589 relocation += adjust;
9594 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9595 r_symndx, symtab_hdr, sym_hashes,
9596 h_elf, sec, relocation,
9597 unresolved_reloc, warned);
9598 sym_name = h_elf->root.root.string;
9599 sym_type = h_elf->type;
9601 h = (struct ppc_link_hash_entry *) h_elf;
9603 /* TLS optimizations. Replace instruction sequences and relocs
9604 based on information we collected in tls_optimize. We edit
9605 RELOCS so that --emit-relocs will output something sensible
9606 for the final instruction stream. */
9610 if (IS_PPC64_TLS_RELOC (r_type))
9613 tls_mask = h->tls_mask;
9614 else if (local_got_ents != NULL)
9617 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9618 tls_mask = lgot_masks[r_symndx];
9620 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9622 /* Check for toc tls entries. */
9625 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9630 tls_mask = *toc_tls;
9634 /* Check that tls relocs are used with tls syms, and non-tls
9635 relocs are used with non-tls syms. */
9637 && r_type != R_PPC64_NONE
9639 || h->elf.root.type == bfd_link_hash_defined
9640 || h->elf.root.type == bfd_link_hash_defweak)
9641 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9643 if (r_type == R_PPC64_TLS && tls_mask != 0)
9644 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9647 (*_bfd_error_handler)
9648 (sym_type == STT_TLS
9649 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9650 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9653 (long) rel->r_offset,
9654 ppc64_elf_howto_table[r_type]->name,
9658 /* Ensure reloc mapping code below stays sane. */
9659 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9660 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9661 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9662 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9663 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9664 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9665 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9666 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9667 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9668 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9677 case R_PPC64_TOC16_LO:
9678 case R_PPC64_TOC16_DS:
9679 case R_PPC64_TOC16_LO_DS:
9681 /* Check for toc tls entries. */
9685 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9692 tls_mask = *toc_tls;
9693 if (r_type == R_PPC64_TOC16_DS
9694 || r_type == R_PPC64_TOC16_LO_DS)
9697 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9702 /* If we found a GD reloc pair, then we might be
9703 doing a GD->IE transition. */
9706 tls_gd = TLS_TPRELGD;
9707 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9708 goto tls_get_addr_check;
9710 else if (retval == 3)
9712 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9713 goto tls_get_addr_check;
9720 case R_PPC64_GOT_TPREL16_DS:
9721 case R_PPC64_GOT_TPREL16_LO_DS:
9723 && (tls_mask & TLS_TPREL) == 0)
9726 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9728 insn |= 0x3c0d0000; /* addis 0,13,0 */
9729 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9730 r_type = R_PPC64_TPREL16_HA;
9731 if (toc_symndx != 0)
9733 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9734 /* We changed the symbol. Start over in order to
9735 get h, sym, sec etc. right. */
9740 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9746 && (tls_mask & TLS_TPREL) == 0)
9749 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9750 if ((insn & ((0x3f << 26) | (31 << 11)))
9751 == ((31 << 26) | (13 << 11)))
9752 rtra = insn & ((1 << 26) - (1 << 16));
9753 else if ((insn & ((0x3f << 26) | (31 << 16)))
9754 == ((31 << 26) | (13 << 16)))
9755 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9758 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9761 else if ((insn & (31 << 1)) == 23 << 1
9762 && ((insn & (31 << 6)) < 14 << 6
9763 || ((insn & (31 << 6)) >= 16 << 6
9764 && (insn & (31 << 6)) < 24 << 6)))
9765 /* load and store indexed -> dform. */
9766 insn = (32 | ((insn >> 6) & 31)) << 26;
9767 else if ((insn & (31 << 1)) == 21 << 1
9768 && (insn & (0x1a << 6)) == 0)
9769 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9770 insn = (((58 | ((insn >> 6) & 4)) << 26)
9771 | ((insn >> 6) & 1));
9772 else if ((insn & (31 << 1)) == 21 << 1
9773 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9775 insn = (58 << 26) | 2;
9779 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9780 /* Was PPC64_TLS which sits on insn boundary, now
9781 PPC64_TPREL16_LO which is at insn+2. */
9783 r_type = R_PPC64_TPREL16_LO;
9784 if (toc_symndx != 0)
9786 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9787 /* We changed the symbol. Start over in order to
9788 get h, sym, sec etc. right. */
9793 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9797 case R_PPC64_GOT_TLSGD16_HI:
9798 case R_PPC64_GOT_TLSGD16_HA:
9799 tls_gd = TLS_TPRELGD;
9800 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9804 case R_PPC64_GOT_TLSLD16_HI:
9805 case R_PPC64_GOT_TLSLD16_HA:
9806 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9809 if ((tls_mask & tls_gd) != 0)
9810 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9811 + R_PPC64_GOT_TPREL16_DS);
9814 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9816 r_type = R_PPC64_NONE;
9818 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9822 case R_PPC64_GOT_TLSGD16:
9823 case R_PPC64_GOT_TLSGD16_LO:
9824 tls_gd = TLS_TPRELGD;
9825 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9826 goto tls_get_addr_check;
9829 case R_PPC64_GOT_TLSLD16:
9830 case R_PPC64_GOT_TLSLD16_LO:
9831 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9834 if (rel + 1 < relend)
9836 enum elf_ppc64_reloc_type r_type2;
9837 unsigned long r_symndx2;
9838 struct elf_link_hash_entry *h2;
9839 bfd_vma insn1, insn2, insn3;
9842 /* The next instruction should be a call to
9843 __tls_get_addr. Peek at the reloc to be sure. */
9844 r_type2 = ELF64_R_TYPE (rel[1].r_info);
9845 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9846 if (r_symndx2 < symtab_hdr->sh_info
9847 || (r_type2 != R_PPC64_REL14
9848 && r_type2 != R_PPC64_REL14_BRTAKEN
9849 && r_type2 != R_PPC64_REL14_BRNTAKEN
9850 && r_type2 != R_PPC64_REL24))
9853 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9854 while (h2->root.type == bfd_link_hash_indirect
9855 || h2->root.type == bfd_link_hash_warning)
9856 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
9857 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9858 && h2 != &htab->tls_get_addr_fd->elf))
9861 /* OK, it checks out. Replace the call. */
9862 offset = rel[1].r_offset;
9863 insn1 = bfd_get_32 (output_bfd,
9864 contents + rel->r_offset - 2);
9865 insn3 = bfd_get_32 (output_bfd,
9866 contents + offset + 4);
9867 if ((tls_mask & tls_gd) != 0)
9870 insn1 &= (1 << 26) - (1 << 2);
9871 insn1 |= 58 << 26; /* ld */
9872 insn2 = 0x7c636a14; /* add 3,3,13 */
9873 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9874 if ((tls_mask & TLS_EXPLICIT) == 0)
9875 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9876 + R_PPC64_GOT_TPREL16_DS);
9878 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9879 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9884 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9885 insn2 = 0x38630000; /* addi 3,3,0 */
9888 /* Was an LD reloc. */
9890 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9891 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9893 else if (toc_symndx != 0)
9894 r_symndx = toc_symndx;
9895 r_type = R_PPC64_TPREL16_HA;
9896 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9897 rel[1].r_info = ELF64_R_INFO (r_symndx,
9898 R_PPC64_TPREL16_LO);
9899 rel[1].r_offset += 2;
9902 || insn3 == CROR_151515 || insn3 == CROR_313131)
9906 rel[1].r_offset += 4;
9908 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9909 bfd_put_32 (output_bfd, insn2, contents + offset);
9910 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
9911 if (tls_gd == 0 || toc_symndx != 0)
9913 /* We changed the symbol. Start over in order
9914 to get h, sym, sec etc. right. */
9922 case R_PPC64_DTPMOD64:
9923 if (rel + 1 < relend
9924 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9925 && rel[1].r_offset == rel->r_offset + 8)
9927 if ((tls_mask & TLS_GD) == 0)
9929 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9930 if ((tls_mask & TLS_TPRELGD) != 0)
9931 r_type = R_PPC64_TPREL64;
9934 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9935 r_type = R_PPC64_NONE;
9937 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9942 if ((tls_mask & TLS_LD) == 0)
9944 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9945 r_type = R_PPC64_NONE;
9946 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9951 case R_PPC64_TPREL64:
9952 if ((tls_mask & TLS_TPREL) == 0)
9954 r_type = R_PPC64_NONE;
9955 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9960 /* Handle other relocations that tweak non-addend part of insn. */
9962 max_br_offset = 1 << 25;
9963 addend = rel->r_addend;
9969 /* Branch taken prediction relocations. */
9970 case R_PPC64_ADDR14_BRTAKEN:
9971 case R_PPC64_REL14_BRTAKEN:
9972 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9975 /* Branch not taken prediction relocations. */
9976 case R_PPC64_ADDR14_BRNTAKEN:
9977 case R_PPC64_REL14_BRNTAKEN:
9978 insn |= bfd_get_32 (output_bfd,
9979 contents + rel->r_offset) & ~(0x01 << 21);
9983 max_br_offset = 1 << 15;
9987 /* Calls to functions with a different TOC, such as calls to
9988 shared objects, need to alter the TOC pointer. This is
9989 done using a linkage stub. A REL24 branching to these
9990 linkage stubs needs to be followed by a nop, as the nop
9991 will be replaced with an instruction to restore the TOC
9996 && (((fdh = h->oh) != NULL
9997 && fdh->elf.plt.plist != NULL)
9998 || (fdh = h)->elf.plt.plist != NULL))
10000 && sec->output_section != NULL
10001 && sec->id <= htab->top_id
10002 && (htab->stub_group[sec->id].toc_off
10003 != htab->stub_group[input_section->id].toc_off)))
10004 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
10005 rel, htab)) != NULL
10006 && (stub_entry->stub_type == ppc_stub_plt_call
10007 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10008 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
10010 bfd_boolean can_plt_call = FALSE;
10012 if (rel->r_offset + 8 <= input_section->size)
10015 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10017 || nop == CROR_151515 || nop == CROR_313131)
10019 bfd_put_32 (input_bfd, LD_R2_40R1,
10020 contents + rel->r_offset + 4);
10021 can_plt_call = TRUE;
10027 if (stub_entry->stub_type == ppc_stub_plt_call)
10029 /* If this is a plain branch rather than a branch
10030 and link, don't require a nop. */
10032 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
10034 can_plt_call = TRUE;
10039 && strcmp (h->elf.root.root.string,
10040 ".__libc_start_main") == 0)
10042 /* Allow crt1 branch to go via a toc adjusting stub. */
10043 can_plt_call = TRUE;
10047 if (strcmp (input_section->output_section->name,
10049 || strcmp (input_section->output_section->name,
10051 (*_bfd_error_handler)
10052 (_("%B(%A+0x%lx): automatic multiple TOCs "
10053 "not supported using your crt files; "
10054 "recompile with -mminimal-toc or upgrade gcc"),
10057 (long) rel->r_offset);
10059 (*_bfd_error_handler)
10060 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
10061 "does not allow automatic multiple TOCs; "
10062 "recompile with -mminimal-toc or "
10063 "-fno-optimize-sibling-calls, "
10064 "or make `%s' extern"),
10067 (long) rel->r_offset,
10070 bfd_set_error (bfd_error_bad_value);
10076 && stub_entry->stub_type == ppc_stub_plt_call)
10077 unresolved_reloc = FALSE;
10080 if (stub_entry == NULL
10081 && get_opd_info (sec) != NULL)
10083 /* The branch destination is the value of the opd entry. */
10084 bfd_vma off = (relocation - sec->output_section->vma
10085 - sec->output_offset + rel->r_addend);
10086 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10087 if (dest != (bfd_vma) -1)
10094 /* If the branch is out of reach we ought to have a long
10096 from = (rel->r_offset
10097 + input_section->output_offset
10098 + input_section->output_section->vma);
10100 if (stub_entry == NULL
10101 && (relocation + rel->r_addend - from + max_br_offset
10102 >= 2 * max_br_offset)
10103 && r_type != R_PPC64_ADDR14_BRTAKEN
10104 && r_type != R_PPC64_ADDR14_BRNTAKEN)
10105 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10108 if (stub_entry != NULL)
10110 /* Munge up the value and addend so that we call the stub
10111 rather than the procedure directly. */
10112 relocation = (stub_entry->stub_offset
10113 + stub_entry->stub_sec->output_offset
10114 + stub_entry->stub_sec->output_section->vma);
10122 /* Set 'a' bit. This is 0b00010 in BO field for branch
10123 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10124 for branch on CTR insns (BO == 1a00t or 1a01t). */
10125 if ((insn & (0x14 << 21)) == (0x04 << 21))
10126 insn |= 0x02 << 21;
10127 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10128 insn |= 0x08 << 21;
10134 /* Invert 'y' bit if not the default. */
10135 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
10136 insn ^= 0x01 << 21;
10139 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
10142 /* NOP out calls to undefined weak functions.
10143 We can thus call a weak function without first
10144 checking whether the function is defined. */
10146 && h->elf.root.type == bfd_link_hash_undefweak
10147 && r_type == R_PPC64_REL24
10149 && rel->r_addend == 0)
10151 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10157 /* Set `addend'. */
10162 (*_bfd_error_handler)
10163 (_("%B: unknown relocation type %d for symbol %s"),
10164 input_bfd, (int) r_type, sym_name);
10166 bfd_set_error (bfd_error_bad_value);
10172 case R_PPC64_GNU_VTINHERIT:
10173 case R_PPC64_GNU_VTENTRY:
10176 /* GOT16 relocations. Like an ADDR16 using the symbol's
10177 address in the GOT as relocation value instead of the
10178 symbol's value itself. Also, create a GOT entry for the
10179 symbol and put the symbol value there. */
10180 case R_PPC64_GOT_TLSGD16:
10181 case R_PPC64_GOT_TLSGD16_LO:
10182 case R_PPC64_GOT_TLSGD16_HI:
10183 case R_PPC64_GOT_TLSGD16_HA:
10184 tls_type = TLS_TLS | TLS_GD;
10187 case R_PPC64_GOT_TLSLD16:
10188 case R_PPC64_GOT_TLSLD16_LO:
10189 case R_PPC64_GOT_TLSLD16_HI:
10190 case R_PPC64_GOT_TLSLD16_HA:
10191 tls_type = TLS_TLS | TLS_LD;
10194 case R_PPC64_GOT_TPREL16_DS:
10195 case R_PPC64_GOT_TPREL16_LO_DS:
10196 case R_PPC64_GOT_TPREL16_HI:
10197 case R_PPC64_GOT_TPREL16_HA:
10198 tls_type = TLS_TLS | TLS_TPREL;
10201 case R_PPC64_GOT_DTPREL16_DS:
10202 case R_PPC64_GOT_DTPREL16_LO_DS:
10203 case R_PPC64_GOT_DTPREL16_HI:
10204 case R_PPC64_GOT_DTPREL16_HA:
10205 tls_type = TLS_TLS | TLS_DTPREL;
10208 case R_PPC64_GOT16:
10209 case R_PPC64_GOT16_LO:
10210 case R_PPC64_GOT16_HI:
10211 case R_PPC64_GOT16_HA:
10212 case R_PPC64_GOT16_DS:
10213 case R_PPC64_GOT16_LO_DS:
10216 /* Relocation is to the entry for this symbol in the global
10221 unsigned long indx = 0;
10223 if (tls_type == (TLS_TLS | TLS_LD)
10225 || !h->elf.def_dynamic))
10226 offp = &ppc64_tlsld_got (input_bfd)->offset;
10229 struct got_entry *ent;
10233 bfd_boolean dyn = htab->elf.dynamic_sections_created;
10234 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10237 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
10238 /* This is actually a static link, or it is a
10239 -Bsymbolic link and the symbol is defined
10240 locally, or the symbol was forced to be local
10241 because of a version file. */
10245 indx = h->elf.dynindx;
10246 unresolved_reloc = FALSE;
10248 ent = h->elf.got.glist;
10252 if (local_got_ents == NULL)
10254 ent = local_got_ents[r_symndx];
10257 for (; ent != NULL; ent = ent->next)
10258 if (ent->addend == rel->r_addend
10259 && ent->owner == input_bfd
10260 && ent->tls_type == tls_type)
10264 offp = &ent->got.offset;
10267 got = ppc64_elf_tdata (input_bfd)->got;
10271 /* The offset must always be a multiple of 8. We use the
10272 least significant bit to record whether we have already
10273 processed this entry. */
10275 if ((off & 1) != 0)
10279 /* Generate relocs for the dynamic linker, except in
10280 the case of TLSLD where we'll use one entry per
10282 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10285 if ((info->shared || indx != 0)
10287 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10288 || h->elf.root.type != bfd_link_hash_undefweak))
10290 outrel.r_offset = (got->output_section->vma
10291 + got->output_offset
10293 outrel.r_addend = rel->r_addend;
10294 if (tls_type & (TLS_LD | TLS_GD))
10296 outrel.r_addend = 0;
10297 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
10298 if (tls_type == (TLS_TLS | TLS_GD))
10300 loc = relgot->contents;
10301 loc += (relgot->reloc_count++
10302 * sizeof (Elf64_External_Rela));
10303 bfd_elf64_swap_reloca_out (output_bfd,
10305 outrel.r_offset += 8;
10306 outrel.r_addend = rel->r_addend;
10308 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10311 else if (tls_type == (TLS_TLS | TLS_DTPREL))
10312 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10313 else if (tls_type == (TLS_TLS | TLS_TPREL))
10314 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10315 else if (indx == 0)
10317 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10319 /* Write the .got section contents for the sake
10321 loc = got->contents + off;
10322 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10326 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
10328 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
10330 outrel.r_addend += relocation;
10331 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
10332 outrel.r_addend -= htab->elf.tls_sec->vma;
10334 loc = relgot->contents;
10335 loc += (relgot->reloc_count++
10336 * sizeof (Elf64_External_Rela));
10337 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10340 /* Init the .got section contents here if we're not
10341 emitting a reloc. */
10344 relocation += rel->r_addend;
10345 if (tls_type == (TLS_TLS | TLS_LD))
10347 else if (tls_type != 0)
10349 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
10350 if (tls_type == (TLS_TLS | TLS_TPREL))
10351 relocation += DTP_OFFSET - TP_OFFSET;
10353 if (tls_type == (TLS_TLS | TLS_GD))
10355 bfd_put_64 (output_bfd, relocation,
10356 got->contents + off + 8);
10361 bfd_put_64 (output_bfd, relocation,
10362 got->contents + off);
10366 if (off >= (bfd_vma) -2)
10369 relocation = got->output_offset + off;
10371 /* TOC base (r2) is TOC start plus 0x8000. */
10372 addend = -TOC_BASE_OFF;
10376 case R_PPC64_PLT16_HA:
10377 case R_PPC64_PLT16_HI:
10378 case R_PPC64_PLT16_LO:
10379 case R_PPC64_PLT32:
10380 case R_PPC64_PLT64:
10381 /* Relocation is to the entry for this symbol in the
10382 procedure linkage table. */
10384 /* Resolve a PLT reloc against a local symbol directly,
10385 without using the procedure linkage table. */
10389 /* It's possible that we didn't make a PLT entry for this
10390 symbol. This happens when statically linking PIC code,
10391 or when using -Bsymbolic. Go find a match if there is a
10393 if (htab->plt != NULL)
10395 struct plt_entry *ent;
10396 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
10397 if (ent->addend == rel->r_addend
10398 && ent->plt.offset != (bfd_vma) -1)
10400 relocation = (htab->plt->output_section->vma
10401 + htab->plt->output_offset
10402 + ent->plt.offset);
10403 unresolved_reloc = FALSE;
10409 /* Relocation value is TOC base. */
10410 relocation = TOCstart;
10412 relocation += htab->stub_group[input_section->id].toc_off;
10413 else if (unresolved_reloc)
10415 else if (sec != NULL && sec->id <= htab->top_id)
10416 relocation += htab->stub_group[sec->id].toc_off;
10418 unresolved_reloc = TRUE;
10421 /* TOC16 relocs. We want the offset relative to the TOC base,
10422 which is the address of the start of the TOC plus 0x8000.
10423 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10425 case R_PPC64_TOC16:
10426 case R_PPC64_TOC16_LO:
10427 case R_PPC64_TOC16_HI:
10428 case R_PPC64_TOC16_DS:
10429 case R_PPC64_TOC16_LO_DS:
10430 case R_PPC64_TOC16_HA:
10431 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
10434 /* Relocate against the beginning of the section. */
10435 case R_PPC64_SECTOFF:
10436 case R_PPC64_SECTOFF_LO:
10437 case R_PPC64_SECTOFF_HI:
10438 case R_PPC64_SECTOFF_DS:
10439 case R_PPC64_SECTOFF_LO_DS:
10440 case R_PPC64_SECTOFF_HA:
10442 addend -= sec->output_section->vma;
10445 case R_PPC64_REL14:
10446 case R_PPC64_REL14_BRNTAKEN:
10447 case R_PPC64_REL14_BRTAKEN:
10448 case R_PPC64_REL24:
10451 case R_PPC64_TPREL16:
10452 case R_PPC64_TPREL16_LO:
10453 case R_PPC64_TPREL16_HI:
10454 case R_PPC64_TPREL16_HA:
10455 case R_PPC64_TPREL16_DS:
10456 case R_PPC64_TPREL16_LO_DS:
10457 case R_PPC64_TPREL16_HIGHER:
10458 case R_PPC64_TPREL16_HIGHERA:
10459 case R_PPC64_TPREL16_HIGHEST:
10460 case R_PPC64_TPREL16_HIGHESTA:
10461 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10463 /* The TPREL16 relocs shouldn't really be used in shared
10464 libs as they will result in DT_TEXTREL being set, but
10465 support them anyway. */
10469 case R_PPC64_DTPREL16:
10470 case R_PPC64_DTPREL16_LO:
10471 case R_PPC64_DTPREL16_HI:
10472 case R_PPC64_DTPREL16_HA:
10473 case R_PPC64_DTPREL16_DS:
10474 case R_PPC64_DTPREL16_LO_DS:
10475 case R_PPC64_DTPREL16_HIGHER:
10476 case R_PPC64_DTPREL16_HIGHERA:
10477 case R_PPC64_DTPREL16_HIGHEST:
10478 case R_PPC64_DTPREL16_HIGHESTA:
10479 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10482 case R_PPC64_DTPMOD64:
10487 case R_PPC64_TPREL64:
10488 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10491 case R_PPC64_DTPREL64:
10492 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10495 /* Relocations that may need to be propagated if this is a
10497 case R_PPC64_REL30:
10498 case R_PPC64_REL32:
10499 case R_PPC64_REL64:
10500 case R_PPC64_ADDR14:
10501 case R_PPC64_ADDR14_BRNTAKEN:
10502 case R_PPC64_ADDR14_BRTAKEN:
10503 case R_PPC64_ADDR16:
10504 case R_PPC64_ADDR16_DS:
10505 case R_PPC64_ADDR16_HA:
10506 case R_PPC64_ADDR16_HI:
10507 case R_PPC64_ADDR16_HIGHER:
10508 case R_PPC64_ADDR16_HIGHERA:
10509 case R_PPC64_ADDR16_HIGHEST:
10510 case R_PPC64_ADDR16_HIGHESTA:
10511 case R_PPC64_ADDR16_LO:
10512 case R_PPC64_ADDR16_LO_DS:
10513 case R_PPC64_ADDR24:
10514 case R_PPC64_ADDR32:
10515 case R_PPC64_ADDR64:
10516 case R_PPC64_UADDR16:
10517 case R_PPC64_UADDR32:
10518 case R_PPC64_UADDR64:
10519 /* r_symndx will be zero only for relocs against symbols
10520 from removed linkonce sections, or sections discarded by
10521 a linker script. */
10528 if ((input_section->flags & SEC_ALLOC) == 0)
10531 if (NO_OPD_RELOCS && is_opd)
10536 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10537 || h->elf.root.type != bfd_link_hash_undefweak)
10538 && (MUST_BE_DYN_RELOC (r_type)
10539 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
10540 || (ELIMINATE_COPY_RELOCS
10543 && h->elf.dynindx != -1
10544 && !h->elf.non_got_ref
10545 && h->elf.def_dynamic
10546 && !h->elf.def_regular))
10548 Elf_Internal_Rela outrel;
10549 bfd_boolean skip, relocate;
10554 /* When generating a dynamic object, these relocations
10555 are copied into the output file to be resolved at run
10561 out_off = _bfd_elf_section_offset (output_bfd, info,
10562 input_section, rel->r_offset);
10563 if (out_off == (bfd_vma) -1)
10565 else if (out_off == (bfd_vma) -2)
10566 skip = TRUE, relocate = TRUE;
10567 out_off += (input_section->output_section->vma
10568 + input_section->output_offset);
10569 outrel.r_offset = out_off;
10570 outrel.r_addend = rel->r_addend;
10572 /* Optimize unaligned reloc use. */
10573 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10574 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10575 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10576 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10577 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10578 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10579 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10580 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10581 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10584 memset (&outrel, 0, sizeof outrel);
10585 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
10587 && r_type != R_PPC64_TOC)
10588 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
10591 /* This symbol is local, or marked to become local,
10592 or this is an opd section reloc which must point
10593 at a local function. */
10594 outrel.r_addend += relocation;
10595 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
10597 if (is_opd && h != NULL)
10599 /* Lie about opd entries. This case occurs
10600 when building shared libraries and we
10601 reference a function in another shared
10602 lib. The same thing happens for a weak
10603 definition in an application that's
10604 overridden by a strong definition in a
10605 shared lib. (I believe this is a generic
10606 bug in binutils handling of weak syms.)
10607 In these cases we won't use the opd
10608 entry in this lib. */
10609 unresolved_reloc = FALSE;
10611 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10613 /* We need to relocate .opd contents for ld.so.
10614 Prelink also wants simple and consistent rules
10615 for relocs. This make all RELATIVE relocs have
10616 *r_offset equal to r_addend. */
10623 if (bfd_is_abs_section (sec))
10625 else if (sec == NULL || sec->owner == NULL)
10627 bfd_set_error (bfd_error_bad_value);
10634 osec = sec->output_section;
10635 indx = elf_section_data (osec)->dynindx;
10637 /* We are turning this relocation into one
10638 against a section symbol, so subtract out
10639 the output section's address but not the
10640 offset of the input section in the output
10642 outrel.r_addend -= osec->vma;
10645 outrel.r_info = ELF64_R_INFO (indx, r_type);
10649 sreloc = elf_section_data (input_section)->sreloc;
10650 if (sreloc == NULL)
10653 loc = sreloc->contents;
10654 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
10655 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10657 /* If this reloc is against an external symbol, it will
10658 be computed at runtime, so there's no need to do
10659 anything now. However, for the sake of prelink ensure
10660 that the section contents are a known value. */
10663 unresolved_reloc = FALSE;
10664 /* The value chosen here is quite arbitrary as ld.so
10665 ignores section contents except for the special
10666 case of .opd where the contents might be accessed
10667 before relocation. Choose zero, as that won't
10668 cause reloc overflow. */
10671 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10672 to improve backward compatibility with older
10674 if (r_type == R_PPC64_ADDR64)
10675 addend = outrel.r_addend;
10676 /* Adjust pc_relative relocs to have zero in *r_offset. */
10677 else if (ppc64_elf_howto_table[r_type]->pc_relative)
10678 addend = (input_section->output_section->vma
10679 + input_section->output_offset
10686 case R_PPC64_GLOB_DAT:
10687 case R_PPC64_JMP_SLOT:
10688 case R_PPC64_RELATIVE:
10689 /* We shouldn't ever see these dynamic relocs in relocatable
10691 /* Fall through. */
10693 case R_PPC64_PLTGOT16:
10694 case R_PPC64_PLTGOT16_DS:
10695 case R_PPC64_PLTGOT16_HA:
10696 case R_PPC64_PLTGOT16_HI:
10697 case R_PPC64_PLTGOT16_LO:
10698 case R_PPC64_PLTGOT16_LO_DS:
10699 case R_PPC64_PLTREL32:
10700 case R_PPC64_PLTREL64:
10701 /* These ones haven't been implemented yet. */
10703 (*_bfd_error_handler)
10704 (_("%B: relocation %s is not supported for symbol %s."),
10706 ppc64_elf_howto_table[r_type]->name, sym_name);
10708 bfd_set_error (bfd_error_invalid_operation);
10713 /* Do any further special processing. */
10719 case R_PPC64_ADDR16_HA:
10720 case R_PPC64_ADDR16_HIGHERA:
10721 case R_PPC64_ADDR16_HIGHESTA:
10722 case R_PPC64_GOT16_HA:
10723 case R_PPC64_PLTGOT16_HA:
10724 case R_PPC64_PLT16_HA:
10725 case R_PPC64_TOC16_HA:
10726 case R_PPC64_SECTOFF_HA:
10727 case R_PPC64_TPREL16_HA:
10728 case R_PPC64_DTPREL16_HA:
10729 case R_PPC64_GOT_TLSGD16_HA:
10730 case R_PPC64_GOT_TLSLD16_HA:
10731 case R_PPC64_GOT_TPREL16_HA:
10732 case R_PPC64_GOT_DTPREL16_HA:
10733 case R_PPC64_TPREL16_HIGHER:
10734 case R_PPC64_TPREL16_HIGHERA:
10735 case R_PPC64_TPREL16_HIGHEST:
10736 case R_PPC64_TPREL16_HIGHESTA:
10737 case R_PPC64_DTPREL16_HIGHER:
10738 case R_PPC64_DTPREL16_HIGHERA:
10739 case R_PPC64_DTPREL16_HIGHEST:
10740 case R_PPC64_DTPREL16_HIGHESTA:
10741 /* It's just possible that this symbol is a weak symbol
10742 that's not actually defined anywhere. In that case,
10743 'sec' would be NULL, and we should leave the symbol
10744 alone (it will be set to zero elsewhere in the link). */
10746 /* Add 0x10000 if sign bit in 0:15 is set.
10747 Bits 0:15 are not used. */
10751 case R_PPC64_ADDR16_DS:
10752 case R_PPC64_ADDR16_LO_DS:
10753 case R_PPC64_GOT16_DS:
10754 case R_PPC64_GOT16_LO_DS:
10755 case R_PPC64_PLT16_LO_DS:
10756 case R_PPC64_SECTOFF_DS:
10757 case R_PPC64_SECTOFF_LO_DS:
10758 case R_PPC64_TOC16_DS:
10759 case R_PPC64_TOC16_LO_DS:
10760 case R_PPC64_PLTGOT16_DS:
10761 case R_PPC64_PLTGOT16_LO_DS:
10762 case R_PPC64_GOT_TPREL16_DS:
10763 case R_PPC64_GOT_TPREL16_LO_DS:
10764 case R_PPC64_GOT_DTPREL16_DS:
10765 case R_PPC64_GOT_DTPREL16_LO_DS:
10766 case R_PPC64_TPREL16_DS:
10767 case R_PPC64_TPREL16_LO_DS:
10768 case R_PPC64_DTPREL16_DS:
10769 case R_PPC64_DTPREL16_LO_DS:
10770 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10772 /* If this reloc is against an lq insn, then the value must be
10773 a multiple of 16. This is somewhat of a hack, but the
10774 "correct" way to do this by defining _DQ forms of all the
10775 _DS relocs bloats all reloc switches in this file. It
10776 doesn't seem to make much sense to use any of these relocs
10777 in data, so testing the insn should be safe. */
10778 if ((insn & (0x3f << 26)) == (56u << 26))
10780 if (((relocation + addend) & mask) != 0)
10782 (*_bfd_error_handler)
10783 (_("%B: error: relocation %s not a multiple of %d"),
10785 ppc64_elf_howto_table[r_type]->name,
10787 bfd_set_error (bfd_error_bad_value);
10794 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10795 because such sections are not SEC_ALLOC and thus ld.so will
10796 not process them. */
10797 if (unresolved_reloc
10798 && !((input_section->flags & SEC_DEBUGGING) != 0
10799 && h->elf.def_dynamic))
10801 (*_bfd_error_handler)
10802 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10805 (long) rel->r_offset,
10806 ppc64_elf_howto_table[(int) r_type]->name,
10807 h->elf.root.root.string);
10811 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
10819 if (r != bfd_reloc_ok)
10821 if (sym_name == NULL)
10822 sym_name = "(null)";
10823 if (r == bfd_reloc_overflow)
10828 && h->elf.root.type == bfd_link_hash_undefweak
10829 && ppc64_elf_howto_table[r_type]->pc_relative)
10831 /* Assume this is a call protected by other code that
10832 detects the symbol is undefined. If this is the case,
10833 we can safely ignore the overflow. If not, the
10834 program is hosed anyway, and a little warning isn't
10840 if (!((*info->callbacks->reloc_overflow)
10841 (info, (h ? &h->elf.root : NULL), sym_name,
10842 ppc64_elf_howto_table[r_type]->name,
10843 rel->r_addend, input_bfd, input_section, rel->r_offset)))
10848 (*_bfd_error_handler)
10849 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10852 (long) rel->r_offset,
10853 ppc64_elf_howto_table[r_type]->name,
10861 /* If we're emitting relocations, then shortly after this function
10862 returns, reloc offsets and addends for this section will be
10863 adjusted. Worse, reloc symbol indices will be for the output
10864 file rather than the input. Save a copy of the relocs for
10865 opd_entry_value. */
10866 if (is_opd && info->emitrelocations)
10869 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10870 rel = bfd_alloc (input_bfd, amt);
10871 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10872 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10875 memcpy (rel, relocs, amt);
10880 /* Adjust the value of any local symbols in opd sections. */
10883 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10884 const char *name ATTRIBUTE_UNUSED,
10885 Elf_Internal_Sym *elfsym,
10886 asection *input_sec,
10887 struct elf_link_hash_entry *h)
10889 long *opd_adjust, adjust;
10895 opd_adjust = get_opd_info (input_sec);
10896 if (opd_adjust == NULL)
10899 value = elfsym->st_value - input_sec->output_offset;
10900 if (!info->relocatable)
10901 value -= input_sec->output_section->vma;
10903 adjust = opd_adjust[value / 8];
10905 elfsym->st_value = 0;
10907 elfsym->st_value += adjust;
10911 /* Finish up dynamic symbol handling. We set the contents of various
10912 dynamic sections here. */
10915 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10916 struct bfd_link_info *info,
10917 struct elf_link_hash_entry *h,
10918 Elf_Internal_Sym *sym)
10920 struct ppc_link_hash_table *htab;
10922 struct plt_entry *ent;
10923 Elf_Internal_Rela rela;
10926 htab = ppc_hash_table (info);
10927 dynobj = htab->elf.dynobj;
10929 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10930 if (ent->plt.offset != (bfd_vma) -1)
10932 /* This symbol has an entry in the procedure linkage
10933 table. Set it up. */
10935 if (htab->plt == NULL
10936 || htab->relplt == NULL
10937 || htab->glink == NULL)
10940 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10941 fill in the PLT entry. */
10942 rela.r_offset = (htab->plt->output_section->vma
10943 + htab->plt->output_offset
10944 + ent->plt.offset);
10945 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10946 rela.r_addend = ent->addend;
10948 loc = htab->relplt->contents;
10949 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10950 * sizeof (Elf64_External_Rela));
10951 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10956 Elf_Internal_Rela rela;
10959 /* This symbol needs a copy reloc. Set it up. */
10961 if (h->dynindx == -1
10962 || (h->root.type != bfd_link_hash_defined
10963 && h->root.type != bfd_link_hash_defweak)
10964 || htab->relbss == NULL)
10967 rela.r_offset = (h->root.u.def.value
10968 + h->root.u.def.section->output_section->vma
10969 + h->root.u.def.section->output_offset);
10970 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10972 loc = htab->relbss->contents;
10973 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
10974 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10977 /* Mark some specially defined symbols as absolute. */
10978 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10979 sym->st_shndx = SHN_ABS;
10984 /* Used to decide how to sort relocs in an optimal manner for the
10985 dynamic linker, before writing them out. */
10987 static enum elf_reloc_type_class
10988 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
10990 enum elf_ppc64_reloc_type r_type;
10992 r_type = ELF64_R_TYPE (rela->r_info);
10995 case R_PPC64_RELATIVE:
10996 return reloc_class_relative;
10997 case R_PPC64_JMP_SLOT:
10998 return reloc_class_plt;
11000 return reloc_class_copy;
11002 return reloc_class_normal;
11006 /* Finish up the dynamic sections. */
11009 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11010 struct bfd_link_info *info)
11012 struct ppc_link_hash_table *htab;
11016 htab = ppc_hash_table (info);
11017 dynobj = htab->elf.dynobj;
11018 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11020 if (htab->elf.dynamic_sections_created)
11022 Elf64_External_Dyn *dyncon, *dynconend;
11024 if (sdyn == NULL || htab->got == NULL)
11027 dyncon = (Elf64_External_Dyn *) sdyn->contents;
11028 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
11029 for (; dyncon < dynconend; dyncon++)
11031 Elf_Internal_Dyn dyn;
11034 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11041 case DT_PPC64_GLINK:
11043 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11044 /* We stupidly defined DT_PPC64_GLINK to be the start
11045 of glink rather than the first entry point, which is
11046 what ld.so needs, and now have a bigger stub to
11047 support automatic multiple TOCs. */
11048 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
11052 s = bfd_get_section_by_name (output_bfd, ".opd");
11055 dyn.d_un.d_ptr = s->vma;
11058 case DT_PPC64_OPDSZ:
11059 s = bfd_get_section_by_name (output_bfd, ".opd");
11062 dyn.d_un.d_val = s->size;
11067 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11072 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11076 dyn.d_un.d_val = htab->relplt->size;
11080 /* Don't count procedure linkage table relocs in the
11081 overall reloc count. */
11085 dyn.d_un.d_val -= s->size;
11089 /* We may not be using the standard ELF linker script.
11090 If .rela.plt is the first .rela section, we adjust
11091 DT_RELA to not include it. */
11095 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11097 dyn.d_un.d_ptr += s->size;
11101 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
11105 if (htab->got != NULL && htab->got->size != 0)
11107 /* Fill in the first entry in the global offset table.
11108 We use it to hold the link-time TOCbase. */
11109 bfd_put_64 (output_bfd,
11110 elf_gp (output_bfd) + TOC_BASE_OFF,
11111 htab->got->contents);
11113 /* Set .got entry size. */
11114 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
11117 if (htab->plt != NULL && htab->plt->size != 0)
11119 /* Set .plt entry size. */
11120 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
11124 /* We need to handle writing out multiple GOT sections ourselves,
11125 since we didn't add them to DYNOBJ. We know dynobj is the first
11127 while ((dynobj = dynobj->link_next) != NULL)
11131 if (!is_ppc64_elf_target (dynobj->xvec))
11134 s = ppc64_elf_tdata (dynobj)->got;
11137 && s->output_section != bfd_abs_section_ptr
11138 && !bfd_set_section_contents (output_bfd, s->output_section,
11139 s->contents, s->output_offset,
11142 s = ppc64_elf_tdata (dynobj)->relgot;
11145 && s->output_section != bfd_abs_section_ptr
11146 && !bfd_set_section_contents (output_bfd, s->output_section,
11147 s->contents, s->output_offset,
11155 #include "elf64-target.h"