1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 /* The 64-bit PowerPC ELF ABI may be found at
24 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
25 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
32 #include "elf/ppc64.h"
33 #include "elf64-ppc.h"
35 static bfd_reloc_status_type ppc64_elf_ha_reloc
36 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
37 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
38 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
39 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc64_elf_toc_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47 static bfd_reloc_status_type ppc64_elf_toc64_reloc
48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
49 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
53 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
54 #define TARGET_LITTLE_NAME "elf64-powerpcle"
55 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
56 #define TARGET_BIG_NAME "elf64-powerpc"
57 #define ELF_ARCH bfd_arch_powerpc
58 #define ELF_MACHINE_CODE EM_PPC64
59 #define ELF_MAXPAGESIZE 0x10000
60 #define elf_info_to_howto ppc64_elf_info_to_howto
62 #define elf_backend_want_got_sym 0
63 #define elf_backend_want_plt_sym 0
64 #define elf_backend_plt_alignment 3
65 #define elf_backend_plt_not_loaded 1
66 #define elf_backend_got_symbol_offset 0
67 #define elf_backend_got_header_size 8
68 #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
69 #define elf_backend_can_gc_sections 1
70 #define elf_backend_can_refcount 1
71 #define elf_backend_rela_normal 1
73 #define bfd_elf64_mkobject ppc64_elf_mkobject
74 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
75 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
76 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
77 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
78 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
80 #define elf_backend_object_p ppc64_elf_object_p
81 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
82 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
83 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
84 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
85 #define elf_backend_check_relocs ppc64_elf_check_relocs
86 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
87 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
88 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
89 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
90 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
91 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
92 #define elf_backend_relocate_section ppc64_elf_relocate_section
93 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
94 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
95 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
96 #define elf_backend_special_sections ppc64_elf_special_sections
98 /* The name of the dynamic interpreter. This is put in the .interp
100 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
102 /* The size in bytes of an entry in the procedure linkage table. */
103 #define PLT_ENTRY_SIZE 24
105 /* The initial size of the plt reserved for the dynamic linker. */
106 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
108 /* TOC base pointers offset from start of TOC. */
109 #define TOC_BASE_OFF 0x8000
111 /* Offset of tp and dtp pointers from start of TLS block. */
112 #define TP_OFFSET 0x7000
113 #define DTP_OFFSET 0x8000
115 /* .plt call stub instructions. The normal stub is like this, but
116 sometimes the .plt entry crosses a 64k boundary and we need to
117 insert an addis to adjust r12. */
118 #define PLT_CALL_STUB_SIZE (7*4)
119 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
120 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
121 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
122 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
123 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
124 /* ld %r11,xxx+16@l(%r12) */
125 #define BCTR 0x4e800420 /* bctr */
128 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
129 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
131 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
133 /* glink call stub instructions. We enter with the index in R0, and the
134 address of glink entry in CTR. From that, we can calculate PLT0. */
135 #define GLINK_CALL_STUB_SIZE (16*4)
136 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
137 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
138 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
139 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
140 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
141 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
142 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
143 /* sub %r12,%r12,%r11 */
144 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
145 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
146 /* ld %r11,xxx@l(%r12) */
147 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
150 /* ld %r11,16(%r12) */
154 #define NOP 0x60000000
156 /* Some other nops. */
157 #define CROR_151515 0x4def7b82
158 #define CROR_313131 0x4ffffb82
160 /* .glink entries for the first 32k functions are two instructions. */
161 #define LI_R0_0 0x38000000 /* li %r0,0 */
162 #define B_DOT 0x48000000 /* b . */
164 /* After that, we need two instructions to load the index, followed by
166 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
167 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
169 /* Instructions to save and restore floating point regs. */
170 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
171 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
172 #define BLR 0x4e800020 /* blr */
174 /* Since .opd is an array of descriptors and each entry will end up
175 with identical R_PPC64_RELATIVE relocs, there is really no need to
176 propagate .opd relocs; The dynamic linker should be taught to
177 relocate .opd without reloc entries. */
178 #ifndef NO_OPD_RELOCS
179 #define NO_OPD_RELOCS 0
182 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
184 /* Relocation HOWTO's. */
185 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
187 static reloc_howto_type ppc64_elf_howto_raw[] = {
188 /* This reloc does nothing. */
189 HOWTO (R_PPC64_NONE, /* type */
191 2, /* size (0 = byte, 1 = short, 2 = long) */
193 FALSE, /* pc_relative */
195 complain_overflow_dont, /* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_PPC64_NONE", /* name */
198 FALSE, /* partial_inplace */
201 FALSE), /* pcrel_offset */
203 /* A standard 32 bit relocation. */
204 HOWTO (R_PPC64_ADDR32, /* type */
206 2, /* size (0 = byte, 1 = short, 2 = long) */
208 FALSE, /* pc_relative */
210 complain_overflow_bitfield, /* complain_on_overflow */
211 bfd_elf_generic_reloc, /* special_function */
212 "R_PPC64_ADDR32", /* name */
213 FALSE, /* partial_inplace */
215 0xffffffff, /* dst_mask */
216 FALSE), /* pcrel_offset */
218 /* An absolute 26 bit branch; the lower two bits must be zero.
219 FIXME: we don't check that, we just clear them. */
220 HOWTO (R_PPC64_ADDR24, /* type */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
224 FALSE, /* pc_relative */
226 complain_overflow_bitfield, /* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_PPC64_ADDR24", /* name */
229 FALSE, /* partial_inplace */
231 0x03fffffc, /* dst_mask */
232 FALSE), /* pcrel_offset */
234 /* A standard 16 bit relocation. */
235 HOWTO (R_PPC64_ADDR16, /* type */
237 1, /* 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_ADDR16", /* name */
244 FALSE, /* partial_inplace */
246 0xffff, /* dst_mask */
247 FALSE), /* pcrel_offset */
249 /* A 16 bit relocation without overflow. */
250 HOWTO (R_PPC64_ADDR16_LO, /* type */
252 1, /* size (0 = byte, 1 = short, 2 = long) */
254 FALSE, /* pc_relative */
256 complain_overflow_dont,/* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC64_ADDR16_LO", /* name */
259 FALSE, /* partial_inplace */
261 0xffff, /* dst_mask */
262 FALSE), /* pcrel_offset */
264 /* Bits 16-31 of an address. */
265 HOWTO (R_PPC64_ADDR16_HI, /* 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_HI", /* name */
274 FALSE, /* partial_inplace */
276 0xffff, /* dst_mask */
277 FALSE), /* pcrel_offset */
279 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
280 bits, treated as a signed number, is negative. */
281 HOWTO (R_PPC64_ADDR16_HA, /* type */
283 1, /* size (0 = byte, 1 = short, 2 = long) */
285 FALSE, /* pc_relative */
287 complain_overflow_dont, /* complain_on_overflow */
288 ppc64_elf_ha_reloc, /* special_function */
289 "R_PPC64_ADDR16_HA", /* name */
290 FALSE, /* partial_inplace */
292 0xffff, /* dst_mask */
293 FALSE), /* pcrel_offset */
295 /* An absolute 16 bit branch; the lower two bits must be zero.
296 FIXME: we don't check that, we just clear them. */
297 HOWTO (R_PPC64_ADDR14, /* type */
299 2, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE, /* pc_relative */
303 complain_overflow_bitfield, /* complain_on_overflow */
304 bfd_elf_generic_reloc, /* special_function */
305 "R_PPC64_ADDR14", /* name */
306 FALSE, /* partial_inplace */
308 0x0000fffc, /* dst_mask */
309 FALSE), /* pcrel_offset */
311 /* An absolute 16 bit branch, for which bit 10 should be set to
312 indicate that the branch is expected to be taken. The lower two
313 bits must be zero. */
314 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
316 2, /* size (0 = byte, 1 = short, 2 = long) */
318 FALSE, /* pc_relative */
320 complain_overflow_bitfield, /* complain_on_overflow */
321 ppc64_elf_brtaken_reloc, /* special_function */
322 "R_PPC64_ADDR14_BRTAKEN",/* name */
323 FALSE, /* partial_inplace */
325 0x0000fffc, /* dst_mask */
326 FALSE), /* pcrel_offset */
328 /* An absolute 16 bit branch, for which bit 10 should be set to
329 indicate that the branch is not expected to be taken. The lower
330 two bits must be zero. */
331 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
335 FALSE, /* pc_relative */
337 complain_overflow_bitfield, /* complain_on_overflow */
338 ppc64_elf_brtaken_reloc, /* special_function */
339 "R_PPC64_ADDR14_BRNTAKEN",/* name */
340 FALSE, /* partial_inplace */
342 0x0000fffc, /* dst_mask */
343 FALSE), /* pcrel_offset */
345 /* A relative 26 bit branch; the lower two bits must be zero. */
346 HOWTO (R_PPC64_REL24, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 TRUE, /* pc_relative */
352 complain_overflow_signed, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
354 "R_PPC64_REL24", /* name */
355 FALSE, /* partial_inplace */
357 0x03fffffc, /* dst_mask */
358 TRUE), /* pcrel_offset */
360 /* A relative 16 bit branch; the lower two bits must be zero. */
361 HOWTO (R_PPC64_REL14, /* type */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
365 TRUE, /* pc_relative */
367 complain_overflow_signed, /* complain_on_overflow */
368 bfd_elf_generic_reloc, /* special_function */
369 "R_PPC64_REL14", /* name */
370 FALSE, /* partial_inplace */
372 0x0000fffc, /* dst_mask */
373 TRUE), /* pcrel_offset */
375 /* A relative 16 bit branch. Bit 10 should be set to indicate that
376 the branch is expected to be taken. The lower two bits must be
378 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 TRUE, /* pc_relative */
384 complain_overflow_signed, /* complain_on_overflow */
385 ppc64_elf_brtaken_reloc, /* special_function */
386 "R_PPC64_REL14_BRTAKEN", /* name */
387 FALSE, /* partial_inplace */
389 0x0000fffc, /* dst_mask */
390 TRUE), /* pcrel_offset */
392 /* A relative 16 bit branch. Bit 10 should be set to indicate that
393 the branch is not expected to be taken. The lower two bits must
395 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
399 TRUE, /* pc_relative */
401 complain_overflow_signed, /* complain_on_overflow */
402 ppc64_elf_brtaken_reloc, /* special_function */
403 "R_PPC64_REL14_BRNTAKEN",/* name */
404 FALSE, /* partial_inplace */
406 0x0000fffc, /* dst_mask */
407 TRUE), /* pcrel_offset */
409 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
411 HOWTO (R_PPC64_GOT16, /* type */
413 1, /* size (0 = byte, 1 = short, 2 = long) */
415 FALSE, /* pc_relative */
417 complain_overflow_signed, /* complain_on_overflow */
418 ppc64_elf_unhandled_reloc, /* special_function */
419 "R_PPC64_GOT16", /* name */
420 FALSE, /* partial_inplace */
422 0xffff, /* dst_mask */
423 FALSE), /* pcrel_offset */
425 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
427 HOWTO (R_PPC64_GOT16_LO, /* type */
429 1, /* size (0 = byte, 1 = short, 2 = long) */
431 FALSE, /* pc_relative */
433 complain_overflow_dont, /* complain_on_overflow */
434 ppc64_elf_unhandled_reloc, /* special_function */
435 "R_PPC64_GOT16_LO", /* name */
436 FALSE, /* partial_inplace */
438 0xffff, /* dst_mask */
439 FALSE), /* pcrel_offset */
441 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
443 HOWTO (R_PPC64_GOT16_HI, /* type */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE, /* pc_relative */
449 complain_overflow_dont,/* complain_on_overflow */
450 ppc64_elf_unhandled_reloc, /* special_function */
451 "R_PPC64_GOT16_HI", /* name */
452 FALSE, /* partial_inplace */
454 0xffff, /* dst_mask */
455 FALSE), /* pcrel_offset */
457 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
459 HOWTO (R_PPC64_GOT16_HA, /* type */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
463 FALSE, /* pc_relative */
465 complain_overflow_dont,/* complain_on_overflow */
466 ppc64_elf_unhandled_reloc, /* special_function */
467 "R_PPC64_GOT16_HA", /* name */
468 FALSE, /* partial_inplace */
470 0xffff, /* dst_mask */
471 FALSE), /* pcrel_offset */
473 /* This is used only by the dynamic linker. The symbol should exist
474 both in the object being run and in some shared library. The
475 dynamic linker copies the data addressed by the symbol from the
476 shared library into the object, because the object being
477 run has to have the data at some particular address. */
478 HOWTO (R_PPC64_COPY, /* type */
480 0, /* this one is variable size */
482 FALSE, /* pc_relative */
484 complain_overflow_dont, /* complain_on_overflow */
485 ppc64_elf_unhandled_reloc, /* special_function */
486 "R_PPC64_COPY", /* name */
487 FALSE, /* partial_inplace */
490 FALSE), /* pcrel_offset */
492 /* Like R_PPC64_ADDR64, but used when setting global offset table
494 HOWTO (R_PPC64_GLOB_DAT, /* type */
496 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
498 FALSE, /* pc_relative */
500 complain_overflow_dont, /* complain_on_overflow */
501 ppc64_elf_unhandled_reloc, /* special_function */
502 "R_PPC64_GLOB_DAT", /* name */
503 FALSE, /* partial_inplace */
505 ONES (64), /* dst_mask */
506 FALSE), /* pcrel_offset */
508 /* Created by the link editor. Marks a procedure linkage table
509 entry for a symbol. */
510 HOWTO (R_PPC64_JMP_SLOT, /* type */
512 0, /* size (0 = byte, 1 = short, 2 = long) */
514 FALSE, /* pc_relative */
516 complain_overflow_dont, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc, /* special_function */
518 "R_PPC64_JMP_SLOT", /* name */
519 FALSE, /* partial_inplace */
522 FALSE), /* pcrel_offset */
524 /* Used only by the dynamic linker. When the object is run, this
525 doubleword64 is set to the load address of the object, plus the
527 HOWTO (R_PPC64_RELATIVE, /* type */
529 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
531 FALSE, /* pc_relative */
533 complain_overflow_dont, /* complain_on_overflow */
534 bfd_elf_generic_reloc, /* special_function */
535 "R_PPC64_RELATIVE", /* name */
536 FALSE, /* partial_inplace */
538 ONES (64), /* dst_mask */
539 FALSE), /* pcrel_offset */
541 /* Like R_PPC64_ADDR32, but may be unaligned. */
542 HOWTO (R_PPC64_UADDR32, /* type */
544 2, /* size (0 = byte, 1 = short, 2 = long) */
546 FALSE, /* pc_relative */
548 complain_overflow_bitfield, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 "R_PPC64_UADDR32", /* name */
551 FALSE, /* partial_inplace */
553 0xffffffff, /* dst_mask */
554 FALSE), /* pcrel_offset */
556 /* Like R_PPC64_ADDR16, but may be unaligned. */
557 HOWTO (R_PPC64_UADDR16, /* type */
559 1, /* 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_UADDR16", /* name */
566 FALSE, /* partial_inplace */
568 0xffff, /* dst_mask */
569 FALSE), /* pcrel_offset */
571 /* 32-bit PC relative. */
572 HOWTO (R_PPC64_REL32, /* type */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
576 TRUE, /* pc_relative */
578 /* FIXME: Verify. Was complain_overflow_bitfield. */
579 complain_overflow_signed, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC64_REL32", /* name */
582 FALSE, /* partial_inplace */
584 0xffffffff, /* dst_mask */
585 TRUE), /* pcrel_offset */
587 /* 32-bit relocation to the symbol's procedure linkage table. */
588 HOWTO (R_PPC64_PLT32, /* type */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
592 FALSE, /* pc_relative */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 ppc64_elf_unhandled_reloc, /* special_function */
596 "R_PPC64_PLT32", /* name */
597 FALSE, /* partial_inplace */
599 0xffffffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
602 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
603 FIXME: R_PPC64_PLTREL32 not supported. */
604 HOWTO (R_PPC64_PLTREL32, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 TRUE, /* pc_relative */
610 complain_overflow_signed, /* complain_on_overflow */
611 bfd_elf_generic_reloc, /* special_function */
612 "R_PPC64_PLTREL32", /* name */
613 FALSE, /* partial_inplace */
615 0xffffffff, /* dst_mask */
616 TRUE), /* pcrel_offset */
618 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
620 HOWTO (R_PPC64_PLT16_LO, /* type */
622 1, /* size (0 = byte, 1 = short, 2 = long) */
624 FALSE, /* pc_relative */
626 complain_overflow_dont, /* complain_on_overflow */
627 ppc64_elf_unhandled_reloc, /* special_function */
628 "R_PPC64_PLT16_LO", /* name */
629 FALSE, /* partial_inplace */
631 0xffff, /* dst_mask */
632 FALSE), /* pcrel_offset */
634 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
636 HOWTO (R_PPC64_PLT16_HI, /* type */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
640 FALSE, /* pc_relative */
642 complain_overflow_dont, /* complain_on_overflow */
643 ppc64_elf_unhandled_reloc, /* special_function */
644 "R_PPC64_PLT16_HI", /* name */
645 FALSE, /* partial_inplace */
647 0xffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
650 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
652 HOWTO (R_PPC64_PLT16_HA, /* type */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 FALSE, /* pc_relative */
658 complain_overflow_dont, /* complain_on_overflow */
659 ppc64_elf_unhandled_reloc, /* special_function */
660 "R_PPC64_PLT16_HA", /* name */
661 FALSE, /* partial_inplace */
663 0xffff, /* dst_mask */
664 FALSE), /* pcrel_offset */
666 /* 16-bit section relative relocation. */
667 HOWTO (R_PPC64_SECTOFF, /* type */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_bitfield, /* complain_on_overflow */
674 ppc64_elf_sectoff_reloc, /* special_function */
675 "R_PPC64_SECTOFF", /* name */
676 FALSE, /* partial_inplace */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
681 /* Like R_PPC64_SECTOFF, but no overflow warning. */
682 HOWTO (R_PPC64_SECTOFF_LO, /* type */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
686 FALSE, /* pc_relative */
688 complain_overflow_dont, /* complain_on_overflow */
689 ppc64_elf_sectoff_reloc, /* special_function */
690 "R_PPC64_SECTOFF_LO", /* name */
691 FALSE, /* partial_inplace */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
696 /* 16-bit upper half section relative relocation. */
697 HOWTO (R_PPC64_SECTOFF_HI, /* 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_HI", /* name */
706 FALSE, /* partial_inplace */
708 0xffff, /* dst_mask */
709 FALSE), /* pcrel_offset */
711 /* 16-bit upper half adjusted section relative relocation. */
712 HOWTO (R_PPC64_SECTOFF_HA, /* 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_ha_reloc, /* special_function */
720 "R_PPC64_SECTOFF_HA", /* name */
721 FALSE, /* partial_inplace */
723 0xffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
726 /* Like R_PPC64_REL24 without touching the two least significant bits. */
727 HOWTO (R_PPC64_REL30, /* type */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
731 TRUE, /* pc_relative */
733 complain_overflow_dont, /* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_PPC64_REL30", /* name */
736 FALSE, /* partial_inplace */
738 0xfffffffc, /* dst_mask */
739 TRUE), /* pcrel_offset */
741 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
743 /* A standard 64-bit relocation. */
744 HOWTO (R_PPC64_ADDR64, /* type */
746 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
748 FALSE, /* pc_relative */
750 complain_overflow_dont, /* complain_on_overflow */
751 bfd_elf_generic_reloc, /* special_function */
752 "R_PPC64_ADDR64", /* name */
753 FALSE, /* partial_inplace */
755 ONES (64), /* dst_mask */
756 FALSE), /* pcrel_offset */
758 /* The bits 32-47 of an address. */
759 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
763 FALSE, /* pc_relative */
765 complain_overflow_dont, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_PPC64_ADDR16_HIGHER", /* name */
768 FALSE, /* partial_inplace */
770 0xffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
773 /* The bits 32-47 of an address, plus 1 if the contents of the low
774 16 bits, treated as a signed number, is negative. */
775 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
777 1, /* size (0 = byte, 1 = short, 2 = long) */
779 FALSE, /* pc_relative */
781 complain_overflow_dont, /* complain_on_overflow */
782 ppc64_elf_ha_reloc, /* special_function */
783 "R_PPC64_ADDR16_HIGHERA", /* name */
784 FALSE, /* partial_inplace */
786 0xffff, /* dst_mask */
787 FALSE), /* pcrel_offset */
789 /* The bits 48-63 of an address. */
790 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE, /* pc_relative */
796 complain_overflow_dont, /* complain_on_overflow */
797 bfd_elf_generic_reloc, /* special_function */
798 "R_PPC64_ADDR16_HIGHEST", /* name */
799 FALSE, /* partial_inplace */
801 0xffff, /* dst_mask */
802 FALSE), /* pcrel_offset */
804 /* The bits 48-63 of an address, plus 1 if the contents of the low
805 16 bits, treated as a signed number, is negative. */
806 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
810 FALSE, /* pc_relative */
812 complain_overflow_dont, /* complain_on_overflow */
813 ppc64_elf_ha_reloc, /* special_function */
814 "R_PPC64_ADDR16_HIGHESTA", /* name */
815 FALSE, /* partial_inplace */
817 0xffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
820 /* Like ADDR64, but may be unaligned. */
821 HOWTO (R_PPC64_UADDR64, /* type */
823 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
825 FALSE, /* pc_relative */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_PPC64_UADDR64", /* name */
830 FALSE, /* partial_inplace */
832 ONES (64), /* dst_mask */
833 FALSE), /* pcrel_offset */
835 /* 64-bit relative relocation. */
836 HOWTO (R_PPC64_REL64, /* type */
838 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
840 TRUE, /* pc_relative */
842 complain_overflow_dont, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_PPC64_REL64", /* name */
845 FALSE, /* partial_inplace */
847 ONES (64), /* dst_mask */
848 TRUE), /* pcrel_offset */
850 /* 64-bit relocation to the symbol's procedure linkage table. */
851 HOWTO (R_PPC64_PLT64, /* type */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
855 FALSE, /* pc_relative */
857 complain_overflow_dont, /* complain_on_overflow */
858 ppc64_elf_unhandled_reloc, /* special_function */
859 "R_PPC64_PLT64", /* name */
860 FALSE, /* partial_inplace */
862 ONES (64), /* dst_mask */
863 FALSE), /* pcrel_offset */
865 /* 64-bit PC relative relocation to the symbol's procedure linkage
867 /* FIXME: R_PPC64_PLTREL64 not supported. */
868 HOWTO (R_PPC64_PLTREL64, /* type */
870 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
872 TRUE, /* pc_relative */
874 complain_overflow_dont, /* complain_on_overflow */
875 ppc64_elf_unhandled_reloc, /* special_function */
876 "R_PPC64_PLTREL64", /* name */
877 FALSE, /* partial_inplace */
879 ONES (64), /* dst_mask */
880 TRUE), /* pcrel_offset */
882 /* 16 bit TOC-relative relocation. */
884 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
885 HOWTO (R_PPC64_TOC16, /* type */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
889 FALSE, /* pc_relative */
891 complain_overflow_signed, /* complain_on_overflow */
892 ppc64_elf_toc_reloc, /* special_function */
893 "R_PPC64_TOC16", /* name */
894 FALSE, /* partial_inplace */
896 0xffff, /* dst_mask */
897 FALSE), /* pcrel_offset */
899 /* 16 bit TOC-relative relocation without overflow. */
901 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
902 HOWTO (R_PPC64_TOC16_LO, /* type */
904 1, /* size (0 = byte, 1 = short, 2 = long) */
906 FALSE, /* pc_relative */
908 complain_overflow_dont, /* complain_on_overflow */
909 ppc64_elf_toc_reloc, /* special_function */
910 "R_PPC64_TOC16_LO", /* name */
911 FALSE, /* partial_inplace */
913 0xffff, /* dst_mask */
914 FALSE), /* pcrel_offset */
916 /* 16 bit TOC-relative relocation, high 16 bits. */
918 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
919 HOWTO (R_PPC64_TOC16_HI, /* type */
921 1, /* size (0 = byte, 1 = short, 2 = long) */
923 FALSE, /* pc_relative */
925 complain_overflow_dont, /* complain_on_overflow */
926 ppc64_elf_toc_reloc, /* special_function */
927 "R_PPC64_TOC16_HI", /* name */
928 FALSE, /* partial_inplace */
930 0xffff, /* dst_mask */
931 FALSE), /* pcrel_offset */
933 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
934 contents of the low 16 bits, treated as a signed number, is
937 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
938 HOWTO (R_PPC64_TOC16_HA, /* type */
940 1, /* size (0 = byte, 1 = short, 2 = long) */
942 FALSE, /* pc_relative */
944 complain_overflow_dont, /* complain_on_overflow */
945 ppc64_elf_toc_ha_reloc, /* special_function */
946 "R_PPC64_TOC16_HA", /* name */
947 FALSE, /* partial_inplace */
949 0xffff, /* dst_mask */
950 FALSE), /* pcrel_offset */
952 /* 64-bit relocation; insert value of TOC base (.TOC.). */
954 /* R_PPC64_TOC 51 doubleword64 .TOC. */
955 HOWTO (R_PPC64_TOC, /* type */
957 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
959 FALSE, /* pc_relative */
961 complain_overflow_bitfield, /* complain_on_overflow */
962 ppc64_elf_toc64_reloc, /* special_function */
963 "R_PPC64_TOC", /* name */
964 FALSE, /* partial_inplace */
966 ONES (64), /* dst_mask */
967 FALSE), /* pcrel_offset */
969 /* Like R_PPC64_GOT16, but also informs the link editor that the
970 value to relocate may (!) refer to a PLT entry which the link
971 editor (a) may replace with the symbol value. If the link editor
972 is unable to fully resolve the symbol, it may (b) create a PLT
973 entry and store the address to the new PLT entry in the GOT.
974 This permits lazy resolution of function symbols at run time.
975 The link editor may also skip all of this and just (c) emit a
976 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
977 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
978 HOWTO (R_PPC64_PLTGOT16, /* type */
980 1, /* size (0 = byte, 1 = short, 2 = long) */
982 FALSE, /* pc_relative */
984 complain_overflow_signed, /* complain_on_overflow */
985 ppc64_elf_unhandled_reloc, /* special_function */
986 "R_PPC64_PLTGOT16", /* name */
987 FALSE, /* partial_inplace */
989 0xffff, /* dst_mask */
990 FALSE), /* pcrel_offset */
992 /* Like R_PPC64_PLTGOT16, but without overflow. */
993 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
994 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
998 FALSE, /* pc_relative */
1000 complain_overflow_dont, /* complain_on_overflow */
1001 ppc64_elf_unhandled_reloc, /* special_function */
1002 "R_PPC64_PLTGOT16_LO", /* name */
1003 FALSE, /* partial_inplace */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1008 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1009 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1011 16, /* rightshift */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE, /* pc_relative */
1016 complain_overflow_dont, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc, /* special_function */
1018 "R_PPC64_PLTGOT16_HI", /* name */
1019 FALSE, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1024 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1025 1 if the contents of the low 16 bits, treated as a signed number,
1027 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1028 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1029 16, /* rightshift */
1030 1, /* size (0 = byte, 1 = short, 2 = long) */
1032 FALSE, /* pc_relative */
1034 complain_overflow_dont,/* complain_on_overflow */
1035 ppc64_elf_unhandled_reloc, /* special_function */
1036 "R_PPC64_PLTGOT16_HA", /* name */
1037 FALSE, /* partial_inplace */
1039 0xffff, /* dst_mask */
1040 FALSE), /* pcrel_offset */
1042 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1043 HOWTO (R_PPC64_ADDR16_DS, /* type */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 FALSE, /* pc_relative */
1049 complain_overflow_bitfield, /* complain_on_overflow */
1050 bfd_elf_generic_reloc, /* special_function */
1051 "R_PPC64_ADDR16_DS", /* name */
1052 FALSE, /* partial_inplace */
1054 0xfffc, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1057 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 FALSE, /* pc_relative */
1064 complain_overflow_dont,/* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_PPC64_ADDR16_LO_DS",/* name */
1067 FALSE, /* partial_inplace */
1069 0xfffc, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1072 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_GOT16_DS, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE, /* pc_relative */
1079 complain_overflow_signed, /* complain_on_overflow */
1080 ppc64_elf_unhandled_reloc, /* special_function */
1081 "R_PPC64_GOT16_DS", /* name */
1082 FALSE, /* partial_inplace */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1087 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE, /* pc_relative */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 ppc64_elf_unhandled_reloc, /* special_function */
1096 "R_PPC64_GOT16_LO_DS", /* name */
1097 FALSE, /* partial_inplace */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1102 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_PLT16_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_PLT16_LO_DS", /* name */
1112 FALSE, /* partial_inplace */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1117 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE, /* pc_relative */
1124 complain_overflow_bitfield, /* complain_on_overflow */
1125 ppc64_elf_sectoff_reloc, /* special_function */
1126 "R_PPC64_SECTOFF_DS", /* name */
1127 FALSE, /* partial_inplace */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1132 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE, /* pc_relative */
1139 complain_overflow_dont, /* complain_on_overflow */
1140 ppc64_elf_sectoff_reloc, /* special_function */
1141 "R_PPC64_SECTOFF_LO_DS",/* name */
1142 FALSE, /* partial_inplace */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1147 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_TOC16_DS, /* type */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1152 FALSE, /* pc_relative */
1154 complain_overflow_signed, /* complain_on_overflow */
1155 ppc64_elf_toc_reloc, /* special_function */
1156 "R_PPC64_TOC16_DS", /* name */
1157 FALSE, /* partial_inplace */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1162 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1167 FALSE, /* pc_relative */
1169 complain_overflow_dont, /* complain_on_overflow */
1170 ppc64_elf_toc_reloc, /* special_function */
1171 "R_PPC64_TOC16_LO_DS", /* name */
1172 FALSE, /* partial_inplace */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1177 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1178 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1179 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1183 FALSE, /* pc_relative */
1185 complain_overflow_signed, /* complain_on_overflow */
1186 ppc64_elf_unhandled_reloc, /* special_function */
1187 "R_PPC64_PLTGOT16_DS", /* name */
1188 FALSE, /* partial_inplace */
1190 0xfffc, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1193 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1194 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1195 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1199 FALSE, /* pc_relative */
1201 complain_overflow_dont, /* complain_on_overflow */
1202 ppc64_elf_unhandled_reloc, /* special_function */
1203 "R_PPC64_PLTGOT16_LO_DS",/* name */
1204 FALSE, /* partial_inplace */
1206 0xfffc, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1209 /* Marker reloc for TLS. */
1212 2, /* size (0 = byte, 1 = short, 2 = long) */
1214 FALSE, /* pc_relative */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 bfd_elf_generic_reloc, /* special_function */
1218 "R_PPC64_TLS", /* name */
1219 FALSE, /* partial_inplace */
1222 FALSE), /* pcrel_offset */
1224 /* Computes the load module index of the load module that contains the
1225 definition of its TLS sym. */
1226 HOWTO (R_PPC64_DTPMOD64,
1228 4, /* size (0 = byte, 1 = short, 2 = long) */
1230 FALSE, /* pc_relative */
1232 complain_overflow_dont, /* complain_on_overflow */
1233 ppc64_elf_unhandled_reloc, /* special_function */
1234 "R_PPC64_DTPMOD64", /* name */
1235 FALSE, /* partial_inplace */
1237 ONES (64), /* dst_mask */
1238 FALSE), /* pcrel_offset */
1240 /* Computes a dtv-relative displacement, the difference between the value
1241 of sym+add and the base address of the thread-local storage block that
1242 contains the definition of sym, minus 0x8000. */
1243 HOWTO (R_PPC64_DTPREL64,
1245 4, /* size (0 = byte, 1 = short, 2 = long) */
1247 FALSE, /* pc_relative */
1249 complain_overflow_dont, /* complain_on_overflow */
1250 ppc64_elf_unhandled_reloc, /* special_function */
1251 "R_PPC64_DTPREL64", /* name */
1252 FALSE, /* partial_inplace */
1254 ONES (64), /* dst_mask */
1255 FALSE), /* pcrel_offset */
1257 /* A 16 bit dtprel reloc. */
1258 HOWTO (R_PPC64_DTPREL16,
1260 1, /* size (0 = byte, 1 = short, 2 = long) */
1262 FALSE, /* pc_relative */
1264 complain_overflow_signed, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_DTPREL16", /* name */
1267 FALSE, /* partial_inplace */
1269 0xffff, /* dst_mask */
1270 FALSE), /* pcrel_offset */
1272 /* Like DTPREL16, but no overflow. */
1273 HOWTO (R_PPC64_DTPREL16_LO,
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1277 FALSE, /* pc_relative */
1279 complain_overflow_dont, /* complain_on_overflow */
1280 ppc64_elf_unhandled_reloc, /* special_function */
1281 "R_PPC64_DTPREL16_LO", /* name */
1282 FALSE, /* partial_inplace */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1287 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1288 HOWTO (R_PPC64_DTPREL16_HI,
1289 16, /* rightshift */
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_HI", /* name */
1297 FALSE, /* partial_inplace */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1302 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1303 HOWTO (R_PPC64_DTPREL16_HA,
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_HA", /* name */
1312 FALSE, /* partial_inplace */
1314 0xffff, /* dst_mask */
1315 FALSE), /* pcrel_offset */
1317 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1318 HOWTO (R_PPC64_DTPREL16_HIGHER,
1319 32, /* 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_HIGHER", /* name */
1327 FALSE, /* partial_inplace */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1332 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1333 HOWTO (R_PPC64_DTPREL16_HIGHERA,
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_HIGHERA", /* name */
1342 FALSE, /* partial_inplace */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1347 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1349 48, /* 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_HIGHEST", /* name */
1357 FALSE, /* partial_inplace */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1362 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
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_HIGHESTA", /* name */
1372 FALSE, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1377 /* Like DTPREL16, but for insns with a DS field. */
1378 HOWTO (R_PPC64_DTPREL16_DS,
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 FALSE, /* pc_relative */
1384 complain_overflow_signed, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_DS", /* name */
1387 FALSE, /* partial_inplace */
1389 0xfffc, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1392 /* Like DTPREL16_DS, but no overflow. */
1393 HOWTO (R_PPC64_DTPREL16_LO_DS,
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE, /* pc_relative */
1399 complain_overflow_dont, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_LO_DS", /* name */
1402 FALSE, /* partial_inplace */
1404 0xfffc, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1407 /* Computes a tp-relative displacement, the difference between the value of
1408 sym+add and the value of the thread pointer (r13). */
1409 HOWTO (R_PPC64_TPREL64,
1411 4, /* size (0 = byte, 1 = short, 2 = long) */
1413 FALSE, /* pc_relative */
1415 complain_overflow_dont, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc, /* special_function */
1417 "R_PPC64_TPREL64", /* name */
1418 FALSE, /* partial_inplace */
1420 ONES (64), /* dst_mask */
1421 FALSE), /* pcrel_offset */
1423 /* A 16 bit tprel reloc. */
1424 HOWTO (R_PPC64_TPREL16,
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1428 FALSE, /* pc_relative */
1430 complain_overflow_signed, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_TPREL16", /* name */
1433 FALSE, /* partial_inplace */
1435 0xffff, /* dst_mask */
1436 FALSE), /* pcrel_offset */
1438 /* Like TPREL16, but no overflow. */
1439 HOWTO (R_PPC64_TPREL16_LO,
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1443 FALSE, /* pc_relative */
1445 complain_overflow_dont, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_TPREL16_LO", /* name */
1448 FALSE, /* partial_inplace */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1453 /* Like TPREL16_LO, but next higher group of 16 bits. */
1454 HOWTO (R_PPC64_TPREL16_HI,
1455 16, /* rightshift */
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_HI", /* name */
1463 FALSE, /* partial_inplace */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1468 /* Like TPREL16_HI, but adjust for low 16 bits. */
1469 HOWTO (R_PPC64_TPREL16_HA,
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_HA", /* name */
1478 FALSE, /* partial_inplace */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1483 /* Like TPREL16_HI, but next higher group of 16 bits. */
1484 HOWTO (R_PPC64_TPREL16_HIGHER,
1485 32, /* 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_HIGHER", /* name */
1493 FALSE, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1498 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1499 HOWTO (R_PPC64_TPREL16_HIGHERA,
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_HIGHERA", /* name */
1508 FALSE, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1513 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HIGHEST,
1515 48, /* 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_HIGHEST", /* name */
1523 FALSE, /* partial_inplace */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1528 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HIGHESTA,
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_HIGHESTA", /* name */
1538 FALSE, /* partial_inplace */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1543 /* Like TPREL16, but for insns with a DS field. */
1544 HOWTO (R_PPC64_TPREL16_DS,
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 FALSE, /* pc_relative */
1550 complain_overflow_signed, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_DS", /* name */
1553 FALSE, /* partial_inplace */
1555 0xfffc, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1558 /* Like TPREL16_DS, but no overflow. */
1559 HOWTO (R_PPC64_TPREL16_LO_DS,
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE, /* pc_relative */
1565 complain_overflow_dont, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_LO_DS", /* name */
1568 FALSE, /* partial_inplace */
1570 0xfffc, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1573 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1574 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1575 to the first entry relative to the TOC base (r2). */
1576 HOWTO (R_PPC64_GOT_TLSGD16,
1578 1, /* size (0 = byte, 1 = short, 2 = long) */
1580 FALSE, /* pc_relative */
1582 complain_overflow_signed, /* complain_on_overflow */
1583 ppc64_elf_unhandled_reloc, /* special_function */
1584 "R_PPC64_GOT_TLSGD16", /* name */
1585 FALSE, /* partial_inplace */
1587 0xffff, /* dst_mask */
1588 FALSE), /* pcrel_offset */
1590 /* Like GOT_TLSGD16, but no overflow. */
1591 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1593 1, /* size (0 = byte, 1 = short, 2 = long) */
1595 FALSE, /* pc_relative */
1597 complain_overflow_dont, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc, /* special_function */
1599 "R_PPC64_GOT_TLSGD16_LO", /* name */
1600 FALSE, /* partial_inplace */
1602 0xffff, /* dst_mask */
1603 FALSE), /* pcrel_offset */
1605 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1606 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1607 16, /* rightshift */
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_HI", /* name */
1615 FALSE, /* partial_inplace */
1617 0xffff, /* dst_mask */
1618 FALSE), /* pcrel_offset */
1620 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1621 HOWTO (R_PPC64_GOT_TLSGD16_HA,
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_HA", /* name */
1630 FALSE, /* partial_inplace */
1632 0xffff, /* dst_mask */
1633 FALSE), /* pcrel_offset */
1635 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1636 with values (sym+add)@dtpmod and zero, and computes the offset to the
1637 first entry relative to the TOC base (r2). */
1638 HOWTO (R_PPC64_GOT_TLSLD16,
1640 1, /* size (0 = byte, 1 = short, 2 = long) */
1642 FALSE, /* pc_relative */
1644 complain_overflow_signed, /* complain_on_overflow */
1645 ppc64_elf_unhandled_reloc, /* special_function */
1646 "R_PPC64_GOT_TLSLD16", /* name */
1647 FALSE, /* partial_inplace */
1649 0xffff, /* dst_mask */
1650 FALSE), /* pcrel_offset */
1652 /* Like GOT_TLSLD16, but no overflow. */
1653 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1655 1, /* size (0 = byte, 1 = short, 2 = long) */
1657 FALSE, /* pc_relative */
1659 complain_overflow_dont, /* complain_on_overflow */
1660 ppc64_elf_unhandled_reloc, /* special_function */
1661 "R_PPC64_GOT_TLSLD16_LO", /* name */
1662 FALSE, /* partial_inplace */
1664 0xffff, /* dst_mask */
1665 FALSE), /* pcrel_offset */
1667 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1668 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1669 16, /* rightshift */
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_HI", /* name */
1677 FALSE, /* partial_inplace */
1679 0xffff, /* dst_mask */
1680 FALSE), /* pcrel_offset */
1682 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1683 HOWTO (R_PPC64_GOT_TLSLD16_HA,
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_HA", /* name */
1692 FALSE, /* partial_inplace */
1694 0xffff, /* dst_mask */
1695 FALSE), /* pcrel_offset */
1697 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1698 the offset to the entry relative to the TOC base (r2). */
1699 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1701 1, /* size (0 = byte, 1 = short, 2 = long) */
1703 FALSE, /* pc_relative */
1705 complain_overflow_signed, /* complain_on_overflow */
1706 ppc64_elf_unhandled_reloc, /* special_function */
1707 "R_PPC64_GOT_DTPREL16_DS", /* name */
1708 FALSE, /* partial_inplace */
1710 0xfffc, /* dst_mask */
1711 FALSE), /* pcrel_offset */
1713 /* Like GOT_DTPREL16_DS, but no overflow. */
1714 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1716 1, /* size (0 = byte, 1 = short, 2 = long) */
1718 FALSE, /* pc_relative */
1720 complain_overflow_dont, /* complain_on_overflow */
1721 ppc64_elf_unhandled_reloc, /* special_function */
1722 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1723 FALSE, /* partial_inplace */
1725 0xfffc, /* dst_mask */
1726 FALSE), /* pcrel_offset */
1728 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1729 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1730 16, /* rightshift */
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_HI", /* name */
1738 FALSE, /* partial_inplace */
1740 0xffff, /* dst_mask */
1741 FALSE), /* pcrel_offset */
1743 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1744 HOWTO (R_PPC64_GOT_DTPREL16_HA,
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_HA", /* name */
1753 FALSE, /* partial_inplace */
1755 0xffff, /* dst_mask */
1756 FALSE), /* pcrel_offset */
1758 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1759 offset to the entry relative to the TOC base (r2). */
1760 HOWTO (R_PPC64_GOT_TPREL16_DS,
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1764 FALSE, /* pc_relative */
1766 complain_overflow_signed, /* complain_on_overflow */
1767 ppc64_elf_unhandled_reloc, /* special_function */
1768 "R_PPC64_GOT_TPREL16_DS", /* name */
1769 FALSE, /* partial_inplace */
1771 0xfffc, /* dst_mask */
1772 FALSE), /* pcrel_offset */
1774 /* Like GOT_TPREL16_DS, but no overflow. */
1775 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1777 1, /* size (0 = byte, 1 = short, 2 = long) */
1779 FALSE, /* pc_relative */
1781 complain_overflow_dont, /* complain_on_overflow */
1782 ppc64_elf_unhandled_reloc, /* special_function */
1783 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1784 FALSE, /* partial_inplace */
1786 0xfffc, /* dst_mask */
1787 FALSE), /* pcrel_offset */
1789 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1790 HOWTO (R_PPC64_GOT_TPREL16_HI,
1791 16, /* rightshift */
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_HI", /* name */
1799 FALSE, /* partial_inplace */
1801 0xffff, /* dst_mask */
1802 FALSE), /* pcrel_offset */
1804 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1805 HOWTO (R_PPC64_GOT_TPREL16_HA,
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_HA", /* name */
1814 FALSE, /* partial_inplace */
1816 0xffff, /* dst_mask */
1817 FALSE), /* pcrel_offset */
1819 /* GNU extension to record C++ vtable hierarchy. */
1820 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1822 0, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE, /* pc_relative */
1826 complain_overflow_dont, /* complain_on_overflow */
1827 NULL, /* special_function */
1828 "R_PPC64_GNU_VTINHERIT", /* name */
1829 FALSE, /* partial_inplace */
1832 FALSE), /* pcrel_offset */
1834 /* GNU extension to record C++ vtable member usage. */
1835 HOWTO (R_PPC64_GNU_VTENTRY, /* 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_VTENTRY", /* name */
1844 FALSE, /* partial_inplace */
1847 FALSE), /* pcrel_offset */
1851 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1855 ppc_howto_init (void)
1857 unsigned int i, type;
1860 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1863 type = ppc64_elf_howto_raw[i].type;
1864 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1865 / sizeof (ppc64_elf_howto_table[0])));
1866 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1870 static reloc_howto_type *
1871 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1872 bfd_reloc_code_real_type code)
1874 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1876 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1877 /* Initialize howto table if needed. */
1885 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1887 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1889 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1891 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1893 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1895 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1897 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1899 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1901 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1903 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1905 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1907 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1909 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1911 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1913 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1915 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1917 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1919 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1921 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1923 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1925 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1927 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1929 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1931 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1933 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1935 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1937 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1939 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1941 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1943 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1945 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1947 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1949 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1951 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1953 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1955 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1957 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1959 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1961 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1963 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1965 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1967 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1969 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1971 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1973 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1975 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1977 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1979 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1981 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1983 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
1985 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
1987 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
1989 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
1991 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
1993 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
1995 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
1997 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
1999 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2001 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2003 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2005 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2007 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2009 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2011 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2013 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2015 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2017 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2019 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2021 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2023 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2025 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2027 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2029 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2031 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2033 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2035 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2037 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2039 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2041 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2043 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2045 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2047 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2049 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2051 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2053 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2055 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2057 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2059 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2061 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2063 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2065 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2067 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2069 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2071 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2073 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2075 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2077 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2079 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2081 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2083 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2085 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2089 return ppc64_elf_howto_table[r];
2092 /* Set the howto pointer for a PowerPC ELF reloc. */
2095 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2096 Elf_Internal_Rela *dst)
2100 /* Initialize howto table if needed. */
2101 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2104 type = ELF64_R_TYPE (dst->r_info);
2105 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2106 / sizeof (ppc64_elf_howto_table[0])));
2107 cache_ptr->howto = ppc64_elf_howto_table[type];
2110 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2112 static bfd_reloc_status_type
2113 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2114 void *data, asection *input_section,
2115 bfd *output_bfd, char **error_message)
2117 /* If this is a relocatable link (output_bfd test tells us), just
2118 call the generic function. Any adjustment will be done at final
2120 if (output_bfd != NULL)
2121 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2122 input_section, output_bfd, error_message);
2124 /* Adjust the addend for sign extension of the low 16 bits.
2125 We won't actually be using the low 16 bits, so trashing them
2127 reloc_entry->addend += 0x8000;
2128 return bfd_reloc_continue;
2131 static bfd_reloc_status_type
2132 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2133 void *data, asection *input_section,
2134 bfd *output_bfd, char **error_message)
2137 enum elf_ppc64_reloc_type r_type;
2138 bfd_size_type octets;
2139 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2140 bfd_boolean is_power4 = FALSE;
2142 /* If this is a relocatable link (output_bfd test tells us), just
2143 call the generic function. Any adjustment will be done at final
2145 if (output_bfd != NULL)
2146 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2147 input_section, output_bfd, error_message);
2149 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2150 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2151 insn &= ~(0x01 << 21);
2152 r_type = reloc_entry->howto->type;
2153 if (r_type == R_PPC64_ADDR14_BRTAKEN
2154 || r_type == R_PPC64_REL14_BRTAKEN)
2155 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2159 /* Set 'a' bit. This is 0b00010 in BO field for branch
2160 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2161 for branch on CTR insns (BO == 1a00t or 1a01t). */
2162 if ((insn & (0x14 << 21)) == (0x04 << 21))
2164 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2167 return bfd_reloc_continue;
2174 if (!bfd_is_com_section (symbol->section))
2175 target = symbol->value;
2176 target += symbol->section->output_section->vma;
2177 target += symbol->section->output_offset;
2178 target += reloc_entry->addend;
2180 from = (reloc_entry->address
2181 + input_section->output_offset
2182 + input_section->output_section->vma);
2184 /* Invert 'y' bit if not the default. */
2185 if ((bfd_signed_vma) (target - from) < 0)
2188 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2189 return bfd_reloc_continue;
2192 static bfd_reloc_status_type
2193 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2194 void *data, asection *input_section,
2195 bfd *output_bfd, char **error_message)
2197 /* If this is a relocatable link (output_bfd test tells us), just
2198 call the generic function. Any adjustment will be done at final
2200 if (output_bfd != NULL)
2201 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2202 input_section, output_bfd, error_message);
2204 /* Subtract the symbol section base address. */
2205 reloc_entry->addend -= symbol->section->output_section->vma;
2206 return bfd_reloc_continue;
2209 static bfd_reloc_status_type
2210 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2211 void *data, asection *input_section,
2212 bfd *output_bfd, char **error_message)
2214 /* If this is a relocatable link (output_bfd test tells us), just
2215 call the generic function. Any adjustment will be done at final
2217 if (output_bfd != NULL)
2218 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2219 input_section, output_bfd, error_message);
2221 /* Subtract the symbol section base address. */
2222 reloc_entry->addend -= symbol->section->output_section->vma;
2224 /* Adjust the addend for sign extension of the low 16 bits. */
2225 reloc_entry->addend += 0x8000;
2226 return bfd_reloc_continue;
2229 static bfd_reloc_status_type
2230 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2231 void *data, asection *input_section,
2232 bfd *output_bfd, char **error_message)
2236 /* If this is a relocatable link (output_bfd test tells us), just
2237 call the generic function. Any adjustment will be done at final
2239 if (output_bfd != NULL)
2240 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2241 input_section, output_bfd, error_message);
2243 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2245 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2247 /* Subtract the TOC base address. */
2248 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2249 return bfd_reloc_continue;
2252 static bfd_reloc_status_type
2253 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2254 void *data, asection *input_section,
2255 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 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2268 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2270 /* Subtract the TOC base address. */
2271 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2273 /* Adjust the addend for sign extension of the low 16 bits. */
2274 reloc_entry->addend += 0x8000;
2275 return bfd_reloc_continue;
2278 static bfd_reloc_status_type
2279 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2280 void *data, asection *input_section,
2281 bfd *output_bfd, char **error_message)
2284 bfd_size_type octets;
2286 /* If this is a relocatable link (output_bfd test tells us), just
2287 call the generic function. Any adjustment will be done at final
2289 if (output_bfd != NULL)
2290 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2291 input_section, output_bfd, error_message);
2293 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2295 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2297 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2298 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2299 return bfd_reloc_ok;
2302 static bfd_reloc_status_type
2303 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2304 void *data, asection *input_section,
2305 bfd *output_bfd, char **error_message)
2307 /* If this is a relocatable link (output_bfd test tells us), just
2308 call the generic function. Any adjustment will be done at final
2310 if (output_bfd != NULL)
2311 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2312 input_section, output_bfd, error_message);
2314 if (error_message != NULL)
2316 static char buf[60];
2317 sprintf (buf, "generic linker can't handle %s",
2318 reloc_entry->howto->name);
2319 *error_message = buf;
2321 return bfd_reloc_dangerous;
2324 struct ppc64_elf_obj_tdata
2326 struct elf_obj_tdata elf;
2328 /* Shortcuts to dynamic linker sections. */
2332 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2333 sections means we potentially need one of these for each input bfd. */
2335 bfd_signed_vma refcount;
2340 #define ppc64_elf_tdata(bfd) \
2341 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2343 #define ppc64_tlsld_got(bfd) \
2344 (&ppc64_elf_tdata (bfd)->tlsld_got)
2346 /* Override the generic function because we store some extras. */
2349 ppc64_elf_mkobject (bfd *abfd)
2351 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2352 abfd->tdata.any = bfd_zalloc (abfd, amt);
2353 if (abfd->tdata.any == NULL)
2358 /* Fix bad default arch selected for a 64 bit input bfd when the
2359 default is 32 bit. */
2362 ppc64_elf_object_p (bfd *abfd)
2364 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2366 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2368 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2370 /* Relies on arch after 32 bit default being 64 bit default. */
2371 abfd->arch_info = abfd->arch_info->next;
2372 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2378 /* Support for core dump NOTE sections. */
2381 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2383 size_t offset, raw_size;
2385 if (note->descsz != 504)
2389 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2392 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2398 /* Make a ".reg/999" section. */
2399 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2400 raw_size, note->descpos + offset);
2404 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2406 if (note->descsz != 136)
2409 elf_tdata (abfd)->core_program
2410 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2411 elf_tdata (abfd)->core_command
2412 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2417 /* Merge backend specific data from an object file to the output
2418 object file when linking. */
2421 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2423 /* Check if we have the same endianess. */
2424 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2425 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2426 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2430 if (bfd_big_endian (ibfd))
2431 msg = _("%s: compiled for a big endian system "
2432 "and target is little endian");
2434 msg = _("%s: compiled for a little endian system "
2435 "and target is big endian");
2437 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
2439 bfd_set_error (bfd_error_wrong_format);
2446 /* Add extra PPC sections. */
2448 static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2450 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2451 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2452 { ".plt", 4, 0, SHT_NOBITS, 0 },
2453 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2454 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2455 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2456 { NULL, 0, 0, 0, 0 }
2459 struct _ppc64_elf_section_data
2461 struct bfd_elf_section_data elf;
2463 /* An array with one entry for each opd function descriptor. */
2466 /* Points to the function code section for local opd entries. */
2467 asection **func_sec;
2468 /* After editing .opd, adjust references to opd local syms. */
2472 /* An array for toc sections, indexed by offset/8.
2473 Specifies the relocation symbol index used at a given toc offset. */
2477 #define ppc64_elf_section_data(sec) \
2478 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2481 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2483 struct _ppc64_elf_section_data *sdata;
2484 bfd_size_type amt = sizeof (*sdata);
2486 sdata = bfd_zalloc (abfd, amt);
2489 sec->used_by_bfd = sdata;
2491 return _bfd_elf_new_section_hook (abfd, sec);
2494 /* The following functions are specific to the ELF linker, while
2495 functions above are used generally. Those named ppc64_elf_* are
2496 called by the main ELF linker code. They appear in this file more
2497 or less in the order in which they are called. eg.
2498 ppc64_elf_check_relocs is called early in the link process,
2499 ppc64_elf_finish_dynamic_sections is one of the last functions
2502 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2503 functions have both a function code symbol and a function descriptor
2504 symbol. A call to foo in a relocatable object file looks like:
2511 The function definition in another object file might be:
2515 . .quad .TOC.@tocbase
2521 When the linker resolves the call during a static link, the branch
2522 unsurprisingly just goes to .foo and the .opd information is unused.
2523 If the function definition is in a shared library, things are a little
2524 different: The call goes via a plt call stub, the opd information gets
2525 copied to the plt, and the linker patches the nop.
2533 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2534 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2535 . std 2,40(1) # this is the general idea
2543 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2545 The "reloc ()" notation is supposed to indicate that the linker emits
2546 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2549 What are the difficulties here? Well, firstly, the relocations
2550 examined by the linker in check_relocs are against the function code
2551 sym .foo, while the dynamic relocation in the plt is emitted against
2552 the function descriptor symbol, foo. Somewhere along the line, we need
2553 to carefully copy dynamic link information from one symbol to the other.
2554 Secondly, the generic part of the elf linker will make .foo a dynamic
2555 symbol as is normal for most other backends. We need foo dynamic
2556 instead, at least for an application final link. However, when
2557 creating a shared library containing foo, we need to have both symbols
2558 dynamic so that references to .foo are satisfied during the early
2559 stages of linking. Otherwise the linker might decide to pull in a
2560 definition from some other object, eg. a static library. */
2562 /* The linker needs to keep track of the number of relocs that it
2563 decides to copy as dynamic relocs in check_relocs for each symbol.
2564 This is so that it can later discard them if they are found to be
2565 unnecessary. We store the information in a field extending the
2566 regular ELF linker hash table. */
2568 struct ppc_dyn_relocs
2570 struct ppc_dyn_relocs *next;
2572 /* The input section of the reloc. */
2575 /* Total number of relocs copied for the input section. */
2576 bfd_size_type count;
2578 /* Number of pc-relative relocs copied for the input section. */
2579 bfd_size_type pc_count;
2582 /* Track GOT entries needed for a given symbol. We might need more
2583 than one got entry per symbol. */
2586 struct got_entry *next;
2588 /* The symbol addend that we'll be placing in the GOT. */
2591 /* Unlike other ELF targets, we use separate GOT entries for the same
2592 symbol referenced from different input files. This is to support
2593 automatic multiple TOC/GOT sections, where the TOC base can vary
2594 from one input file to another.
2596 Point to the BFD owning this GOT entry. */
2599 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2600 TLS_TPREL or TLS_DTPREL for tls entries. */
2603 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2606 bfd_signed_vma refcount;
2611 /* The same for PLT. */
2614 struct plt_entry *next;
2620 bfd_signed_vma refcount;
2625 /* Of those relocs that might be copied as dynamic relocs, this macro
2626 selects those that must be copied when linking a shared library,
2627 even when the symbol is local. */
2629 #define MUST_BE_DYN_RELOC(RTYPE) \
2630 ((RTYPE) != R_PPC64_REL32 \
2631 && (RTYPE) != R_PPC64_REL64 \
2632 && (RTYPE) != R_PPC64_REL30)
2634 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2635 copying dynamic variables from a shared lib into an app's dynbss
2636 section, and instead use a dynamic relocation to point into the
2637 shared lib. With code that gcc generates, it's vital that this be
2638 enabled; In the PowerPC64 ABI, the address of a function is actually
2639 the address of a function descriptor, which resides in the .opd
2640 section. gcc uses the descriptor directly rather than going via the
2641 GOT as some other ABI's do, which means that initialized function
2642 pointers must reference the descriptor. Thus, a function pointer
2643 initialized to the address of a function in a shared library will
2644 either require a copy reloc, or a dynamic reloc. Using a copy reloc
2645 redefines the function desctriptor symbol to point to the copy. This
2646 presents a problem as a plt entry for that function is also
2647 initialized from the function descriptor symbol and the copy reloc
2648 may not be initialized first. */
2649 #define ELIMINATE_COPY_RELOCS 1
2651 /* Section name for stubs is the associated section name plus this
2653 #define STUB_SUFFIX ".stub"
2656 ppc_stub_long_branch:
2657 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2658 destination, but a 24 bit branch in a stub section will reach.
2661 ppc_stub_plt_branch:
2662 Similar to the above, but a 24 bit branch in the stub section won't
2663 reach its destination.
2664 . addis %r12,%r2,xxx@toc@ha
2665 . ld %r11,xxx@toc@l(%r12)
2670 Used to call a function in a shared library.
2671 . addis %r12,%r2,xxx@toc@ha
2673 . ld %r11,xxx+0@toc@l(%r12)
2674 . ld %r2,xxx+8@toc@l(%r12)
2676 . ld %r11,xxx+16@toc@l(%r12)
2679 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
2680 code to adjust the value and save r2 to support multiple toc sections.
2681 A ppc_stub_long_branch with an r2 offset looks like:
2683 . addis %r2,%r2,off@ha
2684 . addi %r2,%r2,off@l
2687 A ppc_stub_plt_branch with an r2 offset looks like:
2689 . addis %r12,%r2,xxx@toc@ha
2690 . ld %r11,xxx@toc@l(%r12)
2691 . addis %r2,%r2,off@ha
2692 . addi %r2,%r2,off@l
2697 enum ppc_stub_type {
2699 ppc_stub_long_branch,
2700 ppc_stub_long_branch_r2off,
2701 ppc_stub_plt_branch,
2702 ppc_stub_plt_branch_r2off,
2706 struct ppc_stub_hash_entry {
2708 /* Base hash table entry structure. */
2709 struct bfd_hash_entry root;
2711 enum ppc_stub_type stub_type;
2713 /* The stub section. */
2716 /* Offset within stub_sec of the beginning of this stub. */
2717 bfd_vma stub_offset;
2719 /* Given the symbol's value and its section we can determine its final
2720 value when building the stubs (so the stub knows where to jump. */
2721 bfd_vma target_value;
2722 asection *target_section;
2724 /* The symbol table entry, if any, that this was derived from. */
2725 struct ppc_link_hash_entry *h;
2727 /* And the reloc addend that this was derived from. */
2730 /* Where this stub is being called from, or, in the case of combined
2731 stub sections, the first input section in the group. */
2735 struct ppc_branch_hash_entry {
2737 /* Base hash table entry structure. */
2738 struct bfd_hash_entry root;
2740 /* Offset within .branch_lt. */
2741 unsigned int offset;
2743 /* Generation marker. */
2747 struct ppc_link_hash_entry
2749 struct elf_link_hash_entry elf;
2751 /* A pointer to the most recently used stub hash entry against this
2753 struct ppc_stub_hash_entry *stub_cache;
2755 /* Track dynamic relocs copied for this symbol. */
2756 struct ppc_dyn_relocs *dyn_relocs;
2758 /* Link between function code and descriptor symbols. */
2759 struct elf_link_hash_entry *oh;
2761 /* Flag function code and descriptor symbols. */
2762 unsigned int is_func:1;
2763 unsigned int is_func_descriptor:1;
2764 unsigned int is_entry:1;
2766 /* Contexts in which symbol is used in the GOT (or TOC).
2767 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2768 corresponding relocs are encountered during check_relocs.
2769 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2770 indicate the corresponding GOT entry type is not needed.
2771 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2772 a TPREL one. We use a separate flag rather than setting TPREL
2773 just for convenience in distinguishing the two cases. */
2774 #define TLS_GD 1 /* GD reloc. */
2775 #define TLS_LD 2 /* LD reloc. */
2776 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2777 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2778 #define TLS_TLS 16 /* Any TLS reloc. */
2779 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2780 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2784 /* ppc64 ELF linker hash table. */
2786 struct ppc_link_hash_table
2788 struct elf_link_hash_table elf;
2790 /* The stub hash table. */
2791 struct bfd_hash_table stub_hash_table;
2793 /* Another hash table for plt_branch stubs. */
2794 struct bfd_hash_table branch_hash_table;
2796 /* Linker stub bfd. */
2799 /* Linker call-backs. */
2800 asection * (*add_stub_section) (const char *, asection *);
2801 void (*layout_sections_again) (void);
2803 /* Array to keep track of which stub sections have been created, and
2804 information on stub grouping. */
2806 /* This is the section to which stubs in the group will be attached. */
2808 /* The stub section. */
2810 /* Along with elf_gp, specifies the TOC pointer used in this group. */
2814 /* Support for multiple toc sections. */
2815 unsigned int no_multi_toc;
2816 unsigned int multi_toc_needed;
2818 /* Temp used when calculating TOC pointers. */
2821 /* Highest input section id. */
2824 /* Highest output section index. */
2827 /* List of input sections for each output section. */
2828 asection **input_list;
2830 /* Short-cuts to get to dynamic linker sections. */
2841 /* Short-cut to first output tls section. */
2844 /* Shortcut to .__tls_get_addr. */
2845 struct elf_link_hash_entry *tls_get_addr;
2848 unsigned long stub_count[ppc_stub_plt_call];
2850 /* Set if we should emit symbols for stubs. */
2851 unsigned int emit_stub_syms;
2854 unsigned int stub_error;
2856 /* Flag set when small branches are detected. Used to
2857 select suitable defaults for the stub group size. */
2858 unsigned int has_14bit_branch;
2860 /* Set if we detect a reference undefined weak symbol. */
2861 unsigned int have_undefweak;
2863 /* Incremented every time we size stubs. */
2864 unsigned int stub_iteration;
2866 /* Small local sym to section mapping cache. */
2867 struct sym_sec_cache sym_sec;
2870 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2872 #define ppc_hash_table(p) \
2873 ((struct ppc_link_hash_table *) ((p)->hash))
2875 #define ppc_stub_hash_lookup(table, string, create, copy) \
2876 ((struct ppc_stub_hash_entry *) \
2877 bfd_hash_lookup ((table), (string), (create), (copy)))
2879 #define ppc_branch_hash_lookup(table, string, create, copy) \
2880 ((struct ppc_branch_hash_entry *) \
2881 bfd_hash_lookup ((table), (string), (create), (copy)))
2883 /* Create an entry in the stub hash table. */
2885 static struct bfd_hash_entry *
2886 stub_hash_newfunc (struct bfd_hash_entry *entry,
2887 struct bfd_hash_table *table,
2890 /* Allocate the structure if it has not already been allocated by a
2894 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2899 /* Call the allocation method of the superclass. */
2900 entry = bfd_hash_newfunc (entry, table, string);
2903 struct ppc_stub_hash_entry *eh;
2905 /* Initialize the local fields. */
2906 eh = (struct ppc_stub_hash_entry *) entry;
2907 eh->stub_type = ppc_stub_none;
2908 eh->stub_sec = NULL;
2909 eh->stub_offset = 0;
2910 eh->target_value = 0;
2911 eh->target_section = NULL;
2919 /* Create an entry in the branch hash table. */
2921 static struct bfd_hash_entry *
2922 branch_hash_newfunc (struct bfd_hash_entry *entry,
2923 struct bfd_hash_table *table,
2926 /* Allocate the structure if it has not already been allocated by a
2930 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2935 /* Call the allocation method of the superclass. */
2936 entry = bfd_hash_newfunc (entry, table, string);
2939 struct ppc_branch_hash_entry *eh;
2941 /* Initialize the local fields. */
2942 eh = (struct ppc_branch_hash_entry *) entry;
2950 /* Create an entry in a ppc64 ELF linker hash table. */
2952 static struct bfd_hash_entry *
2953 link_hash_newfunc (struct bfd_hash_entry *entry,
2954 struct bfd_hash_table *table,
2957 /* Allocate the structure if it has not already been allocated by a
2961 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2966 /* Call the allocation method of the superclass. */
2967 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2970 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2972 eh->stub_cache = NULL;
2973 eh->dyn_relocs = NULL;
2976 eh->is_func_descriptor = 0;
2984 /* Create a ppc64 ELF linker hash table. */
2986 static struct bfd_link_hash_table *
2987 ppc64_elf_link_hash_table_create (bfd *abfd)
2989 struct ppc_link_hash_table *htab;
2990 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
2992 htab = bfd_zmalloc (amt);
2996 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3002 /* Init the stub hash table too. */
3003 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3006 /* And the branch hash table. */
3007 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3010 /* Initializing two fields of the union is just cosmetic. We really
3011 only care about glist, but when compiled on a 32-bit host the
3012 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3013 debugger inspection of these fields look nicer. */
3014 htab->elf.init_refcount.refcount = 0;
3015 htab->elf.init_refcount.glist = NULL;
3016 htab->elf.init_offset.offset = 0;
3017 htab->elf.init_offset.glist = NULL;
3019 return &htab->elf.root;
3022 /* Free the derived linker hash table. */
3025 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3027 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3029 bfd_hash_table_free (&ret->stub_hash_table);
3030 bfd_hash_table_free (&ret->branch_hash_table);
3031 _bfd_generic_link_hash_table_free (hash);
3034 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3037 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3039 struct ppc_link_hash_table *htab;
3041 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3043 /* Always hook our dynamic sections into the first bfd, which is the
3044 linker created stub bfd. This ensures that the GOT header is at
3045 the start of the output TOC section. */
3046 htab = ppc_hash_table (info);
3047 htab->stub_bfd = abfd;
3048 htab->elf.dynobj = abfd;
3051 /* Build a name for an entry in the stub hash table. */
3054 ppc_stub_name (const asection *input_section,
3055 const asection *sym_sec,
3056 const struct ppc_link_hash_entry *h,
3057 const Elf_Internal_Rela *rel)
3062 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3063 offsets from a sym as a branch target? In fact, we could
3064 probably assume the addend is always zero. */
3065 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3069 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3070 stub_name = bfd_malloc (len);
3071 if (stub_name != NULL)
3073 sprintf (stub_name, "%08x.%s+%x",
3074 input_section->id & 0xffffffff,
3075 h->elf.root.root.string,
3076 (int) rel->r_addend & 0xffffffff);
3081 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3082 stub_name = bfd_malloc (len);
3083 if (stub_name != NULL)
3085 sprintf (stub_name, "%08x.%x:%x+%x",
3086 input_section->id & 0xffffffff,
3087 sym_sec->id & 0xffffffff,
3088 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3089 (int) rel->r_addend & 0xffffffff);
3095 /* Look up an entry in the stub hash. Stub entries are cached because
3096 creating the stub name takes a bit of time. */
3098 static struct ppc_stub_hash_entry *
3099 ppc_get_stub_entry (const asection *input_section,
3100 const asection *sym_sec,
3101 struct elf_link_hash_entry *hash,
3102 const Elf_Internal_Rela *rel,
3103 struct ppc_link_hash_table *htab)
3105 struct ppc_stub_hash_entry *stub_entry;
3106 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
3107 const asection *id_sec;
3109 /* If this input section is part of a group of sections sharing one
3110 stub section, then use the id of the first section in the group.
3111 Stub names need to include a section id, as there may well be
3112 more than one stub used to reach say, printf, and we need to
3113 distinguish between them. */
3114 id_sec = htab->stub_group[input_section->id].link_sec;
3116 if (h != NULL && h->stub_cache != NULL
3117 && h->stub_cache->h == h
3118 && h->stub_cache->id_sec == id_sec)
3120 stub_entry = h->stub_cache;
3126 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3127 if (stub_name == NULL)
3130 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3131 stub_name, FALSE, FALSE);
3133 h->stub_cache = stub_entry;
3141 /* Add a new stub entry to the stub hash. Not all fields of the new
3142 stub entry are initialised. */
3144 static struct ppc_stub_hash_entry *
3145 ppc_add_stub (const char *stub_name,
3147 struct ppc_link_hash_table *htab)
3151 struct ppc_stub_hash_entry *stub_entry;
3153 link_sec = htab->stub_group[section->id].link_sec;
3154 stub_sec = htab->stub_group[section->id].stub_sec;
3155 if (stub_sec == NULL)
3157 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3158 if (stub_sec == NULL)
3164 namelen = strlen (link_sec->name);
3165 len = namelen + sizeof (STUB_SUFFIX);
3166 s_name = bfd_alloc (htab->stub_bfd, len);
3170 memcpy (s_name, link_sec->name, namelen);
3171 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3172 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3173 if (stub_sec == NULL)
3175 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3177 htab->stub_group[section->id].stub_sec = stub_sec;
3180 /* Enter this entry into the linker stub hash table. */
3181 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3183 if (stub_entry == NULL)
3185 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3186 bfd_archive_filename (section->owner),
3191 stub_entry->stub_sec = stub_sec;
3192 stub_entry->stub_offset = 0;
3193 stub_entry->id_sec = link_sec;
3197 /* Create sections for linker generated code. */
3200 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3202 struct ppc_link_hash_table *htab;
3205 htab = ppc_hash_table (info);
3207 /* Create .sfpr for code to save and restore fp regs. */
3208 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3209 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3210 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3211 if (htab->sfpr == NULL
3212 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3213 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3216 /* Create .glink for lazy dynamic linking support. */
3217 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3218 if (htab->glink == NULL
3219 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3220 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3223 /* Create .branch_lt for plt_branch stubs. */
3224 flags = (SEC_ALLOC | SEC_LOAD
3225 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3226 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3227 if (htab->brlt == NULL
3228 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3229 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3234 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3235 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3236 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3238 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3239 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3245 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3246 not already done. */
3249 create_got_section (bfd *abfd, struct bfd_link_info *info)
3251 asection *got, *relgot;
3253 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3257 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3260 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3265 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3266 | SEC_LINKER_CREATED);
3268 got = bfd_make_section (abfd, ".got");
3270 || !bfd_set_section_flags (abfd, got, flags)
3271 || !bfd_set_section_alignment (abfd, got, 3))
3274 relgot = bfd_make_section (abfd, ".rela.got");
3276 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3277 || ! bfd_set_section_alignment (abfd, relgot, 3))
3280 ppc64_elf_tdata (abfd)->got = got;
3281 ppc64_elf_tdata (abfd)->relgot = relgot;
3285 /* Create the dynamic sections, and set up shortcuts. */
3288 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3290 struct ppc_link_hash_table *htab;
3292 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3295 htab = ppc_hash_table (info);
3297 htab->got = bfd_get_section_by_name (dynobj, ".got");
3298 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3299 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3300 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3302 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3304 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3305 || (!info->shared && !htab->relbss))
3311 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3314 ppc64_elf_copy_indirect_symbol
3315 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3316 struct elf_link_hash_entry *dir,
3317 struct elf_link_hash_entry *ind)
3319 struct ppc_link_hash_entry *edir, *eind;
3322 edir = (struct ppc_link_hash_entry *) dir;
3323 eind = (struct ppc_link_hash_entry *) ind;
3325 /* Copy over any dynamic relocs we may have on the indirect sym. */
3326 if (eind->dyn_relocs != NULL)
3328 if (edir->dyn_relocs != NULL)
3330 struct ppc_dyn_relocs **pp;
3331 struct ppc_dyn_relocs *p;
3333 if (eind->elf.root.type == bfd_link_hash_indirect)
3336 /* Add reloc counts against the weak sym to the strong sym
3337 list. Merge any entries against the same section. */
3338 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3340 struct ppc_dyn_relocs *q;
3342 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3343 if (q->sec == p->sec)
3345 q->pc_count += p->pc_count;
3346 q->count += p->count;
3353 *pp = edir->dyn_relocs;
3356 edir->dyn_relocs = eind->dyn_relocs;
3357 eind->dyn_relocs = NULL;
3360 edir->is_func |= eind->is_func;
3361 edir->is_func_descriptor |= eind->is_func_descriptor;
3362 edir->is_entry |= eind->is_entry;
3363 edir->tls_mask |= eind->tls_mask;
3365 mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR
3366 | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF);
3367 /* If called to transfer flags for a weakdef during processing
3368 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3369 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3370 if (ELIMINATE_COPY_RELOCS
3371 && eind->elf.root.type != bfd_link_hash_indirect
3372 && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
3373 mask &= ~ELF_LINK_NON_GOT_REF;
3375 edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask;
3377 /* If we were called to copy over info for a weak sym, that's all. */
3378 if (eind->elf.root.type != bfd_link_hash_indirect)
3381 /* Copy over got entries that we may have already seen to the
3382 symbol which just became indirect. */
3383 if (eind->elf.got.glist != NULL)
3385 if (edir->elf.got.glist != NULL)
3387 struct got_entry **entp;
3388 struct got_entry *ent;
3390 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3392 struct got_entry *dent;
3394 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3395 if (dent->addend == ent->addend
3396 && dent->owner == ent->owner
3397 && dent->tls_type == ent->tls_type)
3399 dent->got.refcount += ent->got.refcount;
3406 *entp = edir->elf.got.glist;
3409 edir->elf.got.glist = eind->elf.got.glist;
3410 eind->elf.got.glist = NULL;
3413 /* And plt entries. */
3414 if (eind->elf.plt.plist != NULL)
3416 if (edir->elf.plt.plist != NULL)
3418 struct plt_entry **entp;
3419 struct plt_entry *ent;
3421 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3423 struct plt_entry *dent;
3425 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3426 if (dent->addend == ent->addend)
3428 dent->plt.refcount += ent->plt.refcount;
3435 *entp = edir->elf.plt.plist;
3438 edir->elf.plt.plist = eind->elf.plt.plist;
3439 eind->elf.plt.plist = NULL;
3442 if (edir->elf.dynindx == -1)
3444 edir->elf.dynindx = eind->elf.dynindx;
3445 edir->elf.dynstr_index = eind->elf.dynstr_index;
3446 eind->elf.dynindx = -1;
3447 eind->elf.dynstr_index = 0;
3450 BFD_ASSERT (eind->elf.dynindx == -1);
3453 /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
3454 symbols undefined on the command-line. */
3457 ppc64_elf_mark_entry_syms (struct bfd_link_info *info)
3459 struct ppc_link_hash_table *htab;
3460 struct bfd_sym_chain *sym;
3462 htab = ppc_hash_table (info);
3463 for (sym = info->gc_sym_list; sym; sym = sym->next)
3465 struct elf_link_hash_entry *h;
3467 h = elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
3469 ((struct ppc_link_hash_entry *) h)->is_entry = 1;
3475 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
3476 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
3478 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
3479 char *local_got_tls_masks;
3481 if (local_got_ents == NULL)
3483 bfd_size_type size = symtab_hdr->sh_info;
3485 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
3486 local_got_ents = bfd_zalloc (abfd, size);
3487 if (local_got_ents == NULL)
3489 elf_local_got_ents (abfd) = local_got_ents;
3492 if ((tls_type & TLS_EXPLICIT) == 0)
3494 struct got_entry *ent;
3496 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
3497 if (ent->addend == r_addend
3498 && ent->owner == abfd
3499 && ent->tls_type == tls_type)
3503 bfd_size_type amt = sizeof (*ent);
3504 ent = bfd_alloc (abfd, amt);
3507 ent->next = local_got_ents[r_symndx];
3508 ent->addend = r_addend;
3510 ent->tls_type = tls_type;
3511 ent->got.refcount = 0;
3512 local_got_ents[r_symndx] = ent;
3514 ent->got.refcount += 1;
3517 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
3518 local_got_tls_masks[r_symndx] |= tls_type;
3523 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
3525 struct plt_entry *ent;
3527 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
3528 if (ent->addend == addend)
3532 bfd_size_type amt = sizeof (*ent);
3533 ent = bfd_alloc (abfd, amt);
3536 ent->next = eh->elf.plt.plist;
3537 ent->addend = addend;
3538 ent->plt.refcount = 0;
3539 eh->elf.plt.plist = ent;
3541 ent->plt.refcount += 1;
3542 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3547 /* Find the function descriptor hash entry from the given function code
3548 hash entry FH. Link the entries via their OH fields. */
3549 static struct ppc_link_hash_entry *
3550 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3552 struct ppc_link_hash_entry *fdh = (struct ppc_link_hash_entry *) fh->oh;
3556 const char *fd_name = fh->elf.root.root.string + 1;
3558 fdh = (struct ppc_link_hash_entry *)
3559 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3562 fdh->is_func_descriptor = 1;
3572 /* Look through the relocs for a section during the first phase, and
3573 calculate needed space in the global offset table, procedure
3574 linkage table, and dynamic reloc sections. */
3577 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
3578 asection *sec, const Elf_Internal_Rela *relocs)
3580 struct ppc_link_hash_table *htab;
3581 Elf_Internal_Shdr *symtab_hdr;
3582 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3583 const Elf_Internal_Rela *rel;
3584 const Elf_Internal_Rela *rel_end;
3586 asection **opd_sym_map;
3588 if (info->relocatable)
3591 htab = ppc_hash_table (info);
3592 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3594 sym_hashes = elf_sym_hashes (abfd);
3595 sym_hashes_end = (sym_hashes
3596 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
3597 - symtab_hdr->sh_info);
3601 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
3603 /* Garbage collection needs some extra help with .opd sections.
3604 We don't want to necessarily keep everything referenced by
3605 relocs in .opd, as that would keep all functions. Instead,
3606 if we reference an .opd symbol (a function descriptor), we
3607 want to keep the function code symbol's section. This is
3608 easy for global symbols, but for local syms we need to keep
3609 information about the associated function section. Later, if
3610 edit_opd deletes entries, we'll use this array to adjust
3611 local syms in .opd. */
3613 asection *func_section;
3618 amt = sec->_raw_size * sizeof (union opd_info) / 24;
3619 opd_sym_map = bfd_zalloc (abfd, amt);
3620 if (opd_sym_map == NULL)
3622 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
3625 if (htab->sfpr == NULL
3626 && !create_linkage_sections (htab->elf.dynobj, info))
3629 rel_end = relocs + sec->reloc_count;
3630 for (rel = relocs; rel < rel_end; rel++)
3632 unsigned long r_symndx;
3633 struct elf_link_hash_entry *h;
3634 enum elf_ppc64_reloc_type r_type;
3637 r_symndx = ELF64_R_SYM (rel->r_info);
3638 if (r_symndx < symtab_hdr->sh_info)
3641 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3643 r_type = ELF64_R_TYPE (rel->r_info);
3646 case R_PPC64_GOT_TLSLD16:
3647 case R_PPC64_GOT_TLSLD16_LO:
3648 case R_PPC64_GOT_TLSLD16_HI:
3649 case R_PPC64_GOT_TLSLD16_HA:
3650 ppc64_tlsld_got (abfd)->refcount += 1;
3651 tls_type = TLS_TLS | TLS_LD;
3654 case R_PPC64_GOT_TLSGD16:
3655 case R_PPC64_GOT_TLSGD16_LO:
3656 case R_PPC64_GOT_TLSGD16_HI:
3657 case R_PPC64_GOT_TLSGD16_HA:
3658 tls_type = TLS_TLS | TLS_GD;
3661 case R_PPC64_GOT_TPREL16_DS:
3662 case R_PPC64_GOT_TPREL16_LO_DS:
3663 case R_PPC64_GOT_TPREL16_HI:
3664 case R_PPC64_GOT_TPREL16_HA:
3666 info->flags |= DF_STATIC_TLS;
3667 tls_type = TLS_TLS | TLS_TPREL;
3670 case R_PPC64_GOT_DTPREL16_DS:
3671 case R_PPC64_GOT_DTPREL16_LO_DS:
3672 case R_PPC64_GOT_DTPREL16_HI:
3673 case R_PPC64_GOT_DTPREL16_HA:
3674 tls_type = TLS_TLS | TLS_DTPREL;
3676 sec->has_tls_reloc = 1;
3680 case R_PPC64_GOT16_DS:
3681 case R_PPC64_GOT16_HA:
3682 case R_PPC64_GOT16_HI:
3683 case R_PPC64_GOT16_LO:
3684 case R_PPC64_GOT16_LO_DS:
3685 /* This symbol requires a global offset table entry. */
3686 sec->has_gp_reloc = 1;
3687 if (ppc64_elf_tdata (abfd)->got == NULL
3688 && !create_got_section (abfd, info))
3693 struct ppc_link_hash_entry *eh;
3694 struct got_entry *ent;
3696 eh = (struct ppc_link_hash_entry *) h;
3697 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
3698 if (ent->addend == rel->r_addend
3699 && ent->owner == abfd
3700 && ent->tls_type == tls_type)
3704 bfd_size_type amt = sizeof (*ent);
3705 ent = bfd_alloc (abfd, amt);
3708 ent->next = eh->elf.got.glist;
3709 ent->addend = rel->r_addend;
3711 ent->tls_type = tls_type;
3712 ent->got.refcount = 0;
3713 eh->elf.got.glist = ent;
3715 ent->got.refcount += 1;
3716 eh->tls_mask |= tls_type;
3719 /* This is a global offset table entry for a local symbol. */
3720 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3721 rel->r_addend, tls_type))
3725 case R_PPC64_PLT16_HA:
3726 case R_PPC64_PLT16_HI:
3727 case R_PPC64_PLT16_LO:
3730 /* This symbol requires a procedure linkage table entry. We
3731 actually build the entry in adjust_dynamic_symbol,
3732 because this might be a case of linking PIC code without
3733 linking in any dynamic objects, in which case we don't
3734 need to generate a procedure linkage table after all. */
3737 /* It does not make sense to have a procedure linkage
3738 table entry for a local symbol. */
3739 bfd_set_error (bfd_error_bad_value);
3743 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3748 /* The following relocations don't need to propagate the
3749 relocation if linking a shared object since they are
3750 section relative. */
3751 case R_PPC64_SECTOFF:
3752 case R_PPC64_SECTOFF_LO:
3753 case R_PPC64_SECTOFF_HI:
3754 case R_PPC64_SECTOFF_HA:
3755 case R_PPC64_SECTOFF_DS:
3756 case R_PPC64_SECTOFF_LO_DS:
3757 case R_PPC64_DTPREL16:
3758 case R_PPC64_DTPREL16_LO:
3759 case R_PPC64_DTPREL16_HI:
3760 case R_PPC64_DTPREL16_HA:
3761 case R_PPC64_DTPREL16_DS:
3762 case R_PPC64_DTPREL16_LO_DS:
3763 case R_PPC64_DTPREL16_HIGHER:
3764 case R_PPC64_DTPREL16_HIGHERA:
3765 case R_PPC64_DTPREL16_HIGHEST:
3766 case R_PPC64_DTPREL16_HIGHESTA:
3771 case R_PPC64_TOC16_LO:
3772 case R_PPC64_TOC16_HI:
3773 case R_PPC64_TOC16_HA:
3774 case R_PPC64_TOC16_DS:
3775 case R_PPC64_TOC16_LO_DS:
3776 sec->has_gp_reloc = 1;
3779 /* This relocation describes the C++ object vtable hierarchy.
3780 Reconstruct it for later use during GC. */
3781 case R_PPC64_GNU_VTINHERIT:
3782 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3786 /* This relocation describes which C++ vtable entries are actually
3787 used. Record for later use during GC. */
3788 case R_PPC64_GNU_VTENTRY:
3789 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3794 case R_PPC64_REL14_BRTAKEN:
3795 case R_PPC64_REL14_BRNTAKEN:
3796 htab->has_14bit_branch = 1;
3801 && h->root.root.string[0] == '.'
3802 && h->root.root.string[1] != 0)
3804 /* We may need a .plt entry if the function this reloc
3805 refers to is in a shared lib. */
3806 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3809 if (h == htab->tls_get_addr)
3810 sec->has_tls_reloc = 1;
3811 else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15)
3813 && (h->root.root.string[15] == 0
3814 || h->root.root.string[15] == '@'))
3816 htab->tls_get_addr = h;
3817 sec->has_tls_reloc = 1;
3822 case R_PPC64_TPREL64:
3823 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
3825 info->flags |= DF_STATIC_TLS;
3828 case R_PPC64_DTPMOD64:
3829 if (rel + 1 < rel_end
3830 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
3831 && rel[1].r_offset == rel->r_offset + 8)
3832 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
3834 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
3837 case R_PPC64_DTPREL64:
3838 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
3840 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
3841 && rel[-1].r_offset == rel->r_offset - 8)
3842 /* This is the second reloc of a dtpmod, dtprel pair.
3843 Don't mark with TLS_DTPREL. */
3847 sec->has_tls_reloc = 1;
3850 struct ppc_link_hash_entry *eh;
3851 eh = (struct ppc_link_hash_entry *) h;
3852 eh->tls_mask |= tls_type;
3855 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3856 rel->r_addend, tls_type))
3859 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3861 /* One extra to simplify get_tls_mask. */
3862 bfd_size_type amt = sec->_raw_size * sizeof (unsigned) / 8 + 1;
3863 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
3864 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3867 BFD_ASSERT (rel->r_offset % 8 == 0);
3868 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
3870 /* Mark the second slot of a GD or LD entry.
3871 -1 to indicate GD and -2 to indicate LD. */
3872 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3873 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
3874 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3875 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
3878 case R_PPC64_TPREL16:
3879 case R_PPC64_TPREL16_LO:
3880 case R_PPC64_TPREL16_HI:
3881 case R_PPC64_TPREL16_HA:
3882 case R_PPC64_TPREL16_DS:
3883 case R_PPC64_TPREL16_LO_DS:
3884 case R_PPC64_TPREL16_HIGHER:
3885 case R_PPC64_TPREL16_HIGHERA:
3886 case R_PPC64_TPREL16_HIGHEST:
3887 case R_PPC64_TPREL16_HIGHESTA:
3890 info->flags |= DF_STATIC_TLS;
3895 case R_PPC64_ADDR64:
3896 if (opd_sym_map != NULL
3898 && h->root.root.string[0] == '.'
3899 && h->root.root.string[1] != 0)
3900 get_fdh ((struct ppc_link_hash_entry *) h, htab);
3902 if (opd_sym_map != NULL
3904 && rel + 1 < rel_end
3905 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
3909 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3914 opd_sym_map[rel->r_offset / 24] = s;
3921 case R_PPC64_ADDR14:
3922 case R_PPC64_ADDR14_BRNTAKEN:
3923 case R_PPC64_ADDR14_BRTAKEN:
3924 case R_PPC64_ADDR16:
3925 case R_PPC64_ADDR16_DS:
3926 case R_PPC64_ADDR16_HA:
3927 case R_PPC64_ADDR16_HI:
3928 case R_PPC64_ADDR16_HIGHER:
3929 case R_PPC64_ADDR16_HIGHERA:
3930 case R_PPC64_ADDR16_HIGHEST:
3931 case R_PPC64_ADDR16_HIGHESTA:
3932 case R_PPC64_ADDR16_LO:
3933 case R_PPC64_ADDR16_LO_DS:
3934 case R_PPC64_ADDR24:
3935 case R_PPC64_ADDR32:
3936 case R_PPC64_UADDR16:
3937 case R_PPC64_UADDR32:
3938 case R_PPC64_UADDR64:
3940 if (h != NULL && !info->shared)
3941 /* We may need a copy reloc. */
3942 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
3944 /* Don't propagate .opd relocs. */
3945 if (NO_OPD_RELOCS && opd_sym_map != NULL)
3948 /* Don't propagate relocs that the dynamic linker won't relocate. */
3949 if ((sec->flags & SEC_ALLOC) == 0)
3952 /* If we are creating a shared library, and this is a reloc
3953 against a global symbol, or a non PC relative reloc
3954 against a local symbol, then we need to copy the reloc
3955 into the shared library. However, if we are linking with
3956 -Bsymbolic, we do not need to copy a reloc against a
3957 global symbol which is defined in an object we are
3958 including in the link (i.e., DEF_REGULAR is set). At
3959 this point we have not seen all the input files, so it is
3960 possible that DEF_REGULAR is not set now but will be set
3961 later (it is never cleared). In case of a weak definition,
3962 DEF_REGULAR may be cleared later by a strong definition in
3963 a shared library. We account for that possibility below by
3964 storing information in the dyn_relocs field of the hash
3965 table entry. A similar situation occurs when creating
3966 shared libraries and symbol visibility changes render the
3969 If on the other hand, we are creating an executable, we
3970 may need to keep relocations for symbols satisfied by a
3971 dynamic library if we manage to avoid copy relocs for the
3975 && (MUST_BE_DYN_RELOC (r_type)
3977 && (! info->symbolic
3978 || h->root.type == bfd_link_hash_defweak
3979 || (h->elf_link_hash_flags
3980 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3981 || (ELIMINATE_COPY_RELOCS
3984 && (h->root.type == bfd_link_hash_defweak
3985 || (h->elf_link_hash_flags
3986 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
3988 struct ppc_dyn_relocs *p;
3989 struct ppc_dyn_relocs **head;
3991 /* We must copy these reloc types into the output file.
3992 Create a reloc section in dynobj and make room for
3999 name = (bfd_elf_string_from_elf_section
4001 elf_elfheader (abfd)->e_shstrndx,
4002 elf_section_data (sec)->rel_hdr.sh_name));
4006 if (strncmp (name, ".rela", 5) != 0
4007 || strcmp (bfd_get_section_name (abfd, sec),
4010 (*_bfd_error_handler)
4011 (_("%s: bad relocation section name `%s\'"),
4012 bfd_archive_filename (abfd), name);
4013 bfd_set_error (bfd_error_bad_value);
4016 dynobj = htab->elf.dynobj;
4017 sreloc = bfd_get_section_by_name (dynobj, name);
4022 sreloc = bfd_make_section (dynobj, name);
4023 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4024 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4025 if ((sec->flags & SEC_ALLOC) != 0)
4026 flags |= SEC_ALLOC | SEC_LOAD;
4028 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4029 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4032 elf_section_data (sec)->sreloc = sreloc;
4035 /* If this is a global symbol, we count the number of
4036 relocations we need for this symbol. */
4039 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4043 /* Track dynamic relocs needed for local syms too.
4044 We really need local syms available to do this
4048 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4053 head = ((struct ppc_dyn_relocs **)
4054 &elf_section_data (s)->local_dynrel);
4058 if (p == NULL || p->sec != sec)
4060 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4071 if (!MUST_BE_DYN_RELOC (r_type))
4084 /* Return the section that should be marked against GC for a given
4088 ppc64_elf_gc_mark_hook (asection *sec,
4089 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4090 Elf_Internal_Rela *rel,
4091 struct elf_link_hash_entry *h,
4092 Elf_Internal_Sym *sym)
4094 asection *rsec = NULL;
4098 enum elf_ppc64_reloc_type r_type;
4099 struct ppc_link_hash_entry *fdh;
4101 r_type = ELF64_R_TYPE (rel->r_info);
4104 case R_PPC64_GNU_VTINHERIT:
4105 case R_PPC64_GNU_VTENTRY:
4109 switch (h->root.type)
4111 case bfd_link_hash_defined:
4112 case bfd_link_hash_defweak:
4113 fdh = (struct ppc_link_hash_entry *) h;
4115 /* Function descriptor syms cause the associated
4116 function code sym section to be marked. */
4117 if (fdh->is_func_descriptor)
4118 rsec = fdh->oh->root.u.def.section;
4120 /* Function entry syms return NULL if they are in .opd
4121 and are not ._start (or others undefined on the ld
4122 command line). Thus we avoid marking all function
4123 sections, as all functions are referenced in .opd. */
4124 else if ((fdh->oh != NULL
4125 && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
4126 || ppc64_elf_section_data (sec)->opd.func_sec == NULL)
4127 rsec = h->root.u.def.section;
4130 case bfd_link_hash_common:
4131 rsec = h->root.u.c.p->section;
4141 asection **opd_sym_section;
4143 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4144 opd_sym_section = ppc64_elf_section_data (rsec)->opd.func_sec;
4145 if (opd_sym_section != NULL)
4146 rsec = opd_sym_section[sym->st_value / 24];
4147 else if (ppc64_elf_section_data (sec)->opd.func_sec != NULL)
4154 /* Update the .got, .plt. and dynamic reloc reference counts for the
4155 section being removed. */
4158 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4159 asection *sec, const Elf_Internal_Rela *relocs)
4161 struct ppc_link_hash_table *htab;
4162 Elf_Internal_Shdr *symtab_hdr;
4163 struct elf_link_hash_entry **sym_hashes;
4164 struct got_entry **local_got_ents;
4165 const Elf_Internal_Rela *rel, *relend;
4167 elf_section_data (sec)->local_dynrel = NULL;
4169 htab = ppc_hash_table (info);
4170 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4171 sym_hashes = elf_sym_hashes (abfd);
4172 local_got_ents = elf_local_got_ents (abfd);
4174 relend = relocs + sec->reloc_count;
4175 for (rel = relocs; rel < relend; rel++)
4177 unsigned long r_symndx;
4178 enum elf_ppc64_reloc_type r_type;
4179 struct elf_link_hash_entry *h = NULL;
4182 r_symndx = ELF64_R_SYM (rel->r_info);
4183 r_type = ELF64_R_TYPE (rel->r_info);
4184 if (r_symndx >= symtab_hdr->sh_info)
4186 struct ppc_link_hash_entry *eh;
4187 struct ppc_dyn_relocs **pp;
4188 struct ppc_dyn_relocs *p;
4190 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4191 eh = (struct ppc_link_hash_entry *) h;
4193 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4196 /* Everything must go for SEC. */
4204 case R_PPC64_GOT_TLSLD16:
4205 case R_PPC64_GOT_TLSLD16_LO:
4206 case R_PPC64_GOT_TLSLD16_HI:
4207 case R_PPC64_GOT_TLSLD16_HA:
4208 ppc64_tlsld_got (abfd)->refcount -= 1;
4209 tls_type = TLS_TLS | TLS_LD;
4212 case R_PPC64_GOT_TLSGD16:
4213 case R_PPC64_GOT_TLSGD16_LO:
4214 case R_PPC64_GOT_TLSGD16_HI:
4215 case R_PPC64_GOT_TLSGD16_HA:
4216 tls_type = TLS_TLS | TLS_GD;
4219 case R_PPC64_GOT_TPREL16_DS:
4220 case R_PPC64_GOT_TPREL16_LO_DS:
4221 case R_PPC64_GOT_TPREL16_HI:
4222 case R_PPC64_GOT_TPREL16_HA:
4223 tls_type = TLS_TLS | TLS_TPREL;
4226 case R_PPC64_GOT_DTPREL16_DS:
4227 case R_PPC64_GOT_DTPREL16_LO_DS:
4228 case R_PPC64_GOT_DTPREL16_HI:
4229 case R_PPC64_GOT_DTPREL16_HA:
4230 tls_type = TLS_TLS | TLS_DTPREL;
4234 case R_PPC64_GOT16_DS:
4235 case R_PPC64_GOT16_HA:
4236 case R_PPC64_GOT16_HI:
4237 case R_PPC64_GOT16_LO:
4238 case R_PPC64_GOT16_LO_DS:
4241 struct got_entry *ent;
4246 ent = local_got_ents[r_symndx];
4248 for (; ent != NULL; ent = ent->next)
4249 if (ent->addend == rel->r_addend
4250 && ent->owner == abfd
4251 && ent->tls_type == tls_type)
4255 if (ent->got.refcount > 0)
4256 ent->got.refcount -= 1;
4260 case R_PPC64_PLT16_HA:
4261 case R_PPC64_PLT16_HI:
4262 case R_PPC64_PLT16_LO:
4266 case R_PPC64_REL14_BRNTAKEN:
4267 case R_PPC64_REL14_BRTAKEN:
4271 struct plt_entry *ent;
4273 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4274 if (ent->addend == rel->r_addend)
4278 if (ent->plt.refcount > 0)
4279 ent->plt.refcount -= 1;
4290 /* Called via elf_link_hash_traverse to transfer dynamic linking
4291 information on function code symbol entries to their corresponding
4292 function descriptor symbol entries. */
4294 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
4296 struct bfd_link_info *info;
4297 struct ppc_link_hash_table *htab;
4298 struct plt_entry *ent;
4299 struct ppc_link_hash_entry *fh;
4300 struct ppc_link_hash_entry *fdh;
4301 bfd_boolean force_local;
4303 fh = (struct ppc_link_hash_entry *) h;
4304 if (fh->elf.root.type == bfd_link_hash_indirect)
4307 if (fh->elf.root.type == bfd_link_hash_warning)
4308 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
4311 htab = ppc_hash_table (info);
4313 /* If this is a function code symbol, transfer dynamic linking
4314 information to the function descriptor symbol. */
4318 if (fh->elf.root.type == bfd_link_hash_undefweak
4319 && (fh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
4320 htab->have_undefweak = TRUE;
4322 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
4323 if (ent->plt.refcount > 0)
4326 || fh->elf.root.root.string[0] != '.'
4327 || fh->elf.root.root.string[1] == '\0')
4330 /* Find the corresponding function descriptor symbol. Create it
4331 as undefined if necessary. */
4333 fdh = get_fdh (fh, htab);
4335 while (fdh->elf.root.type == bfd_link_hash_indirect
4336 || fdh->elf.root.type == bfd_link_hash_warning)
4337 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
4341 && (fh->elf.root.type == bfd_link_hash_undefined
4342 || fh->elf.root.type == bfd_link_hash_undefweak))
4346 struct bfd_link_hash_entry *bh;
4348 abfd = fh->elf.root.u.undef.abfd;
4349 newsym = bfd_make_empty_symbol (abfd);
4350 newsym->name = fh->elf.root.root.string + 1;
4351 newsym->section = bfd_und_section_ptr;
4353 newsym->flags = BSF_OBJECT;
4354 if (fh->elf.root.type == bfd_link_hash_undefweak)
4355 newsym->flags |= BSF_WEAK;
4357 bh = &fdh->elf.root;
4358 if ( !(_bfd_generic_link_add_one_symbol
4359 (info, abfd, newsym->name, newsym->flags,
4360 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
4364 fdh = (struct ppc_link_hash_entry *) bh;
4365 fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4367 fdh->elf.type = STT_OBJECT;
4371 && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
4373 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4374 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
4375 || (fdh->elf.root.type == bfd_link_hash_undefweak
4376 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
4378 if (fdh->elf.dynindx == -1)
4379 if (! bfd_elf64_link_record_dynamic_symbol (info, &fdh->elf))
4381 fdh->elf.elf_link_hash_flags
4382 |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
4383 | ELF_LINK_HASH_REF_DYNAMIC
4384 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4385 | ELF_LINK_NON_GOT_REF));
4386 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
4388 fdh->elf.plt.plist = fh->elf.plt.plist;
4389 fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4391 fdh->is_func_descriptor = 1;
4396 /* Now that the info is on the function descriptor, clear the
4397 function code sym info. Any function code syms for which we
4398 don't have a definition in a regular file, we force local.
4399 This prevents a shared library from exporting syms that have
4400 been imported from another library. Function code syms that
4401 are really in the library we must leave global to prevent the
4402 linker dragging in a definition from a static library. */
4405 && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4407 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4408 || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0));
4409 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
4414 #define MIN_SAVE_FPR 14
4415 #define MAX_SAVE_FPR 31
4417 /* Called near the start of bfd_elf_size_dynamic_sections. We use
4418 this hook to a) provide some gcc support functions, and b) transfer
4419 dynamic linking information gathered so far on function code symbol
4420 entries, to their corresponding function descriptor symbol entries. */
4422 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
4423 struct bfd_link_info *info)
4425 struct ppc_link_hash_table *htab;
4426 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
4427 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
4429 struct elf_link_hash_entry *h;
4433 htab = ppc_hash_table (info);
4435 if (htab->sfpr == NULL)
4436 /* We don't have any relocs. */
4439 /* First provide any missing ._savef* and ._restf* functions. */
4440 memcpy (sym, "._savef14", 10);
4441 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4443 sym[7] = i / 10 + '0';
4444 sym[8] = i % 10 + '0';
4445 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4447 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4449 if (lowest_savef > i)
4451 h->root.type = bfd_link_hash_defined;
4452 h->root.u.def.section = htab->sfpr;
4453 h->root.u.def.value = (i - lowest_savef) * 4;
4455 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4456 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
4460 memcpy (sym, "._restf14", 10);
4461 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4463 sym[7] = i / 10 + '0';
4464 sym[8] = i % 10 + '0';
4465 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4467 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4469 if (lowest_restf > i)
4471 h->root.type = bfd_link_hash_defined;
4472 h->root.u.def.section = htab->sfpr;
4473 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4474 + (i - lowest_restf) * 4);
4476 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4477 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
4481 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
4483 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4484 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
4486 if (htab->sfpr->_raw_size == 0)
4488 if (!htab->have_undefweak)
4490 _bfd_strip_section_from_output (info, htab->sfpr);
4494 htab->sfpr->_raw_size = 4;
4497 p = bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
4500 htab->sfpr->contents = p;
4502 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
4504 unsigned int fpr = i << 21;
4505 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4506 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
4509 if (lowest_savef <= MAX_SAVE_FPR)
4511 bfd_put_32 (htab->elf.dynobj, BLR, p);
4515 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
4517 unsigned int fpr = i << 21;
4518 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4519 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
4522 if (lowest_restf <= MAX_SAVE_FPR
4523 || htab->sfpr->_raw_size == 4)
4525 bfd_put_32 (htab->elf.dynobj, BLR, p);
4531 /* Adjust a symbol defined by a dynamic object and referenced by a
4532 regular object. The current definition is in some section of the
4533 dynamic object, but we're not including those sections. We have to
4534 change the definition to something the rest of the link can
4538 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4539 struct elf_link_hash_entry *h)
4541 struct ppc_link_hash_table *htab;
4543 unsigned int power_of_two;
4545 htab = ppc_hash_table (info);
4547 /* Deal with function syms. */
4548 if (h->type == STT_FUNC
4549 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4551 /* Clear procedure linkage table information for any symbol that
4552 won't need a .plt entry. */
4553 struct plt_entry *ent;
4554 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4555 if (ent->plt.refcount > 0)
4557 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
4559 || SYMBOL_CALLS_LOCAL (info, h)
4560 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4561 && h->root.type == bfd_link_hash_undefweak))
4563 h->plt.plist = NULL;
4564 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
4568 h->plt.plist = NULL;
4570 /* If this is a weak symbol, and there is a real definition, the
4571 processor independent code will have arranged for us to see the
4572 real definition first, and we can just use the same value. */
4573 if (h->weakdef != NULL)
4575 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4576 || h->weakdef->root.type == bfd_link_hash_defweak);
4577 h->root.u.def.section = h->weakdef->root.u.def.section;
4578 h->root.u.def.value = h->weakdef->root.u.def.value;
4579 if (ELIMINATE_COPY_RELOCS)
4580 h->elf_link_hash_flags
4581 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
4582 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
4586 /* If we are creating a shared library, we must presume that the
4587 only references to the symbol are via the global offset table.
4588 For such cases we need not do anything here; the relocations will
4589 be handled correctly by relocate_section. */
4593 /* If there are no references to this symbol that do not use the
4594 GOT, we don't need to generate a copy reloc. */
4595 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4598 if (ELIMINATE_COPY_RELOCS)
4600 struct ppc_link_hash_entry * eh;
4601 struct ppc_dyn_relocs *p;
4603 eh = (struct ppc_link_hash_entry *) h;
4604 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4606 s = p->sec->output_section;
4607 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4611 /* If we didn't find any dynamic relocs in read-only sections, then
4612 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4615 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
4620 if (h->plt.plist != NULL)
4622 /* We should never get here, but unfortunately there are versions
4623 of gcc out there that improperly (for this ABI) put initialized
4624 function pointers, vtable refs and suchlike in read-only
4625 sections. Allow them to proceed, but warn that this might
4626 break at runtime. */
4627 (*_bfd_error_handler)
4628 (_("copy reloc against `%s' requires lazy plt linking; "
4629 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
4630 h->root.root.string);
4633 /* This is a reference to a symbol defined by a dynamic object which
4634 is not a function. */
4636 /* We must allocate the symbol in our .dynbss section, which will
4637 become part of the .bss section of the executable. There will be
4638 an entry for this symbol in the .dynsym section. The dynamic
4639 object will contain position independent code, so all references
4640 from the dynamic object to this symbol will go through the global
4641 offset table. The dynamic linker will use the .dynsym entry to
4642 determine the address it must put in the global offset table, so
4643 both the dynamic object and the regular object will refer to the
4644 same memory location for the variable. */
4646 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4647 to copy the initial value out of the dynamic object and into the
4648 runtime process image. We need to remember the offset into the
4649 .rela.bss section we are going to use. */
4650 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4652 htab->relbss->_raw_size += sizeof (Elf64_External_Rela);
4653 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4656 /* We need to figure out the alignment required for this symbol. I
4657 have no idea how ELF linkers handle this. */
4658 power_of_two = bfd_log2 (h->size);
4659 if (power_of_two > 4)
4662 /* Apply the required alignment. */
4664 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
4665 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4667 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4671 /* Define the symbol as being at this point in the section. */
4672 h->root.u.def.section = s;
4673 h->root.u.def.value = s->_raw_size;
4675 /* Increment the section size to make room for the symbol. */
4676 s->_raw_size += h->size;
4681 /* If given a function descriptor symbol, hide both the function code
4682 sym and the descriptor. */
4684 ppc64_elf_hide_symbol (struct bfd_link_info *info,
4685 struct elf_link_hash_entry *h,
4686 bfd_boolean force_local)
4688 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4690 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
4692 struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
4697 struct ppc_link_hash_table *htab;
4700 /* We aren't supposed to use alloca in BFD because on
4701 systems which do not have alloca the version in libiberty
4702 calls xmalloc, which might cause the program to crash
4703 when it runs out of memory. This function doesn't have a
4704 return status, so there's no way to gracefully return an
4705 error. So cheat. We know that string[-1] can be safely
4706 dereferenced; It's either a string in an ELF string
4707 table, or allocated in an objalloc structure. */
4709 p = h->root.root.string - 1;
4712 htab = ppc_hash_table (info);
4713 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4716 /* Unfortunately, if it so happens that the string we were
4717 looking for was allocated immediately before this string,
4718 then we overwrote the string terminator. That's the only
4719 reason the lookup should fail. */
4722 q = h->root.root.string + strlen (h->root.root.string);
4723 while (q >= h->root.root.string && *q == *p)
4725 if (q < h->root.root.string && *p == '.')
4726 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4730 ((struct ppc_link_hash_entry *) h)->oh = fh;
4731 ((struct ppc_link_hash_entry *) fh)->oh = h;
4735 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
4740 get_sym_h (struct elf_link_hash_entry **hp, Elf_Internal_Sym **symp,
4741 asection **symsecp, char **tls_maskp, Elf_Internal_Sym **locsymsp,
4742 unsigned long r_symndx, bfd *ibfd)
4744 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4746 if (r_symndx >= symtab_hdr->sh_info)
4748 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4749 struct elf_link_hash_entry *h;
4751 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4752 while (h->root.type == bfd_link_hash_indirect
4753 || h->root.type == bfd_link_hash_warning)
4754 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4762 if (symsecp != NULL)
4764 asection *symsec = NULL;
4765 if (h->root.type == bfd_link_hash_defined
4766 || h->root.type == bfd_link_hash_defweak)
4767 symsec = h->root.u.def.section;
4771 if (tls_maskp != NULL)
4773 struct ppc_link_hash_entry *eh;
4775 eh = (struct ppc_link_hash_entry *) h;
4776 *tls_maskp = &eh->tls_mask;
4781 Elf_Internal_Sym *sym;
4782 Elf_Internal_Sym *locsyms = *locsymsp;
4784 if (locsyms == NULL)
4786 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4787 if (locsyms == NULL)
4788 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4789 symtab_hdr->sh_info,
4790 0, NULL, NULL, NULL);
4791 if (locsyms == NULL)
4793 *locsymsp = locsyms;
4795 sym = locsyms + r_symndx;
4803 if (symsecp != NULL)
4805 asection *symsec = NULL;
4806 if ((sym->st_shndx != SHN_UNDEF
4807 && sym->st_shndx < SHN_LORESERVE)
4808 || sym->st_shndx > SHN_HIRESERVE)
4809 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
4813 if (tls_maskp != NULL)
4815 struct got_entry **lgot_ents;
4819 lgot_ents = elf_local_got_ents (ibfd);
4820 if (lgot_ents != NULL)
4822 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
4823 tls_mask = &lgot_masks[r_symndx];
4825 *tls_maskp = tls_mask;
4831 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
4832 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
4833 type suitable for optimization, and 1 otherwise. */
4836 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
4837 Elf_Internal_Sym **locsymsp,
4838 const Elf_Internal_Rela *rel, bfd *ibfd)
4840 unsigned long r_symndx;
4842 struct elf_link_hash_entry *h;
4843 Elf_Internal_Sym *sym;
4847 r_symndx = ELF64_R_SYM (rel->r_info);
4848 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4851 if ((*tls_maskp != NULL && **tls_maskp != 0)
4853 || ppc64_elf_section_data (sec)->t_symndx == NULL)
4856 /* Look inside a TOC section too. */
4859 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
4860 off = h->root.u.def.value;
4863 off = sym->st_value;
4864 off += rel->r_addend;
4865 BFD_ASSERT (off % 8 == 0);
4866 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
4867 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
4868 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4870 if (toc_symndx != NULL)
4871 *toc_symndx = r_symndx;
4873 || ((h->root.type == bfd_link_hash_defined
4874 || h->root.type == bfd_link_hash_defweak)
4875 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
4876 && (next_r == -1 || next_r == -2))
4882 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info)
4886 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4889 Elf_Internal_Rela *relstart, *rel, *relend;
4890 Elf_Internal_Shdr *symtab_hdr;
4891 Elf_Internal_Sym *local_syms;
4892 struct elf_link_hash_entry **sym_hashes;
4896 bfd_boolean need_edit;
4898 sec = bfd_get_section_by_name (ibfd, ".opd");
4902 amt = sec->_raw_size * sizeof (long) / 24;
4903 adjust = ppc64_elf_section_data (sec)->opd.adjust;
4906 /* Must be a ld -r link. ie. check_relocs hasn't been
4908 adjust = bfd_zalloc (obfd, amt);
4909 ppc64_elf_section_data (sec)->opd.adjust = adjust;
4911 memset (adjust, 0, amt);
4913 if (sec->output_section == bfd_abs_section_ptr)
4916 /* Look through the section relocs. */
4917 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
4921 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4922 sym_hashes = elf_sym_hashes (ibfd);
4924 /* Read the relocations. */
4925 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4927 if (relstart == NULL)
4930 /* First run through the relocs to check they are sane, and to
4931 determine whether we need to edit this opd section. */
4934 relend = relstart + sec->reloc_count;
4935 for (rel = relstart; rel < relend; )
4937 enum elf_ppc64_reloc_type r_type;
4938 unsigned long r_symndx;
4940 struct elf_link_hash_entry *h;
4941 Elf_Internal_Sym *sym;
4943 /* .opd contains a regular array of 24 byte entries. We're
4944 only interested in the reloc pointing to a function entry
4946 if (rel->r_offset != offset
4947 || rel + 1 >= relend
4948 || (rel + 1)->r_offset != offset + 8)
4950 /* If someone messes with .opd alignment then after a
4951 "ld -r" we might have padding in the middle of .opd.
4952 Also, there's nothing to prevent someone putting
4953 something silly in .opd with the assembler. No .opd
4954 optimization for them! */
4955 (*_bfd_error_handler)
4956 (_("%s: .opd is not a regular array of opd entries"),
4957 bfd_archive_filename (ibfd));
4962 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
4963 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
4965 (*_bfd_error_handler)
4966 (_("%s: unexpected reloc type %u in .opd section"),
4967 bfd_archive_filename (ibfd), r_type);
4972 r_symndx = ELF64_R_SYM (rel->r_info);
4973 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
4977 if (sym_sec == NULL || sym_sec->owner == NULL)
4979 const char *sym_name;
4981 sym_name = h->root.root.string;
4983 sym_name = bfd_elf_local_sym_name (ibfd, sym);
4985 (*_bfd_error_handler)
4986 (_("%s: undefined sym `%s' in .opd section"),
4987 bfd_archive_filename (ibfd),
4993 /* opd entries are always for functions defined in the
4994 current input bfd. If the symbol isn't defined in the
4995 input bfd, then we won't be using the function in this
4996 bfd; It must be defined in a linkonce section in another
4997 bfd, or is weak. It's also possible that we are
4998 discarding the function due to a linker script /DISCARD/,
4999 which we test for via the output_section. */
5000 if (sym_sec->owner != ibfd
5001 || sym_sec->output_section == bfd_abs_section_ptr)
5006 /* Allow for the possibility of a reloc on the third word. */
5008 && rel->r_offset == offset - 8)
5014 Elf_Internal_Rela *write_rel;
5015 bfd_byte *rptr, *wptr;
5018 /* This seems a waste of time as input .opd sections are all
5019 zeros as generated by gcc, but I suppose there's no reason
5020 this will always be so. We might start putting something in
5021 the third word of .opd entries. */
5022 if ((sec->flags & SEC_IN_MEMORY) == 0)
5024 bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size);
5026 || !bfd_get_section_contents (ibfd, sec, loc, 0,
5030 if (local_syms != NULL
5031 && symtab_hdr->contents != (unsigned char *) local_syms)
5033 if (elf_section_data (sec)->relocs != relstart)
5037 sec->contents = loc;
5038 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
5041 elf_section_data (sec)->relocs = relstart;
5043 wptr = sec->contents;
5044 rptr = sec->contents;
5045 write_rel = relstart;
5048 for (rel = relstart; rel < relend; rel++)
5050 unsigned long r_symndx;
5052 struct elf_link_hash_entry *h;
5053 Elf_Internal_Sym *sym;
5055 r_symndx = ELF64_R_SYM (rel->r_info);
5056 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5060 if (rel->r_offset == offset)
5062 struct ppc_link_hash_entry *fdh = NULL;
5064 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
5065 ppc_hash_table (info));
5067 skip = (sym_sec->owner != ibfd
5068 || sym_sec->output_section == bfd_abs_section_ptr);
5071 if (h != NULL && sym_sec->owner == ibfd)
5073 /* Arrange for the function descriptor sym
5075 fdh->elf.root.u.def.value = 0;
5076 fdh->elf.root.u.def.section = sym_sec;
5081 /* We'll be keeping this opd entry. */
5085 /* Redefine the function descriptor symbol
5086 to this location in the opd section.
5087 We've checked above that opd relocs are
5089 fdh->elf.root.u.def.value = wptr - sec->contents;
5093 /* Local syms are a bit tricky. We could
5094 tweak them as they can be cached, but
5095 we'd need to look through the local syms
5096 for the function descriptor sym which we
5097 don't have at the moment. So keep an
5098 array of adjustments. */
5099 adjust[rel->r_offset / 24] = wptr - rptr;
5103 memcpy (wptr, rptr, 24);
5112 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
5115 /* We won't be needing dynamic relocs here. */
5116 struct ppc_dyn_relocs **pp;
5117 struct ppc_dyn_relocs *p;
5120 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5121 else if (sym_sec != NULL)
5122 pp = ((struct ppc_dyn_relocs **)
5123 &elf_section_data (sym_sec)->local_dynrel);
5125 pp = ((struct ppc_dyn_relocs **)
5126 &elf_section_data (sec)->local_dynrel);
5127 while ((p = *pp) != NULL)
5142 /* We need to adjust any reloc offsets to point to the
5143 new opd entries. While we're at it, we may as well
5144 remove redundant relocs. */
5145 rel->r_offset += wptr - rptr;
5146 if (write_rel != rel)
5147 memcpy (write_rel, rel, sizeof (*rel));
5152 sec->_cooked_size = wptr - sec->contents;
5153 sec->reloc_count = write_rel - relstart;
5154 /* Fudge the size too, as this is used later in
5155 elf_bfd_final_link if we are emitting relocs. */
5156 elf_section_data (sec)->rel_hdr.sh_size
5157 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
5158 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
5160 else if (elf_section_data (sec)->relocs != relstart)
5163 if (local_syms != NULL
5164 && symtab_hdr->contents != (unsigned char *) local_syms)
5166 if (!info->keep_memory)
5169 symtab_hdr->contents = (unsigned char *) local_syms;
5176 /* Set htab->tls_sec. */
5179 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5182 struct ppc_link_hash_table *htab;
5184 for (tls = obfd->sections; tls != NULL; tls = tls->next)
5185 if ((tls->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
5186 == (SEC_THREAD_LOCAL | SEC_LOAD))
5189 htab = ppc_hash_table (info);
5190 htab->tls_sec = tls;
5192 if (htab->tls_get_addr != NULL)
5194 struct elf_link_hash_entry *h = htab->tls_get_addr;
5196 while (h->root.type == bfd_link_hash_indirect
5197 || h->root.type == bfd_link_hash_warning)
5198 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5200 htab->tls_get_addr = h;
5206 /* Run through all the TLS relocs looking for optimization
5207 opportunities. The linker has been hacked (see ppc64elf.em) to do
5208 a preliminary section layout so that we know the TLS segment
5209 offsets. We can't optimize earlier because some optimizations need
5210 to know the tp offset, and we need to optimize before allocating
5211 dynamic relocations. */
5214 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
5218 struct ppc_link_hash_table *htab;
5220 if (info->relocatable || info->shared)
5223 htab = ppc_hash_table (info);
5224 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5226 Elf_Internal_Sym *locsyms = NULL;
5228 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5229 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5231 Elf_Internal_Rela *relstart, *rel, *relend;
5232 int expecting_tls_get_addr;
5234 /* Read the relocations. */
5235 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5237 if (relstart == NULL)
5240 expecting_tls_get_addr = 0;
5241 relend = relstart + sec->reloc_count;
5242 for (rel = relstart; rel < relend; rel++)
5244 enum elf_ppc64_reloc_type r_type;
5245 unsigned long r_symndx;
5246 struct elf_link_hash_entry *h;
5247 Elf_Internal_Sym *sym;
5250 char tls_set, tls_clear, tls_type = 0;
5252 bfd_boolean ok_tprel, is_local;
5254 r_symndx = ELF64_R_SYM (rel->r_info);
5255 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
5259 if (elf_section_data (sec)->relocs != relstart)
5262 && (elf_tdata (ibfd)->symtab_hdr.contents
5263 != (unsigned char *) locsyms))
5270 if (h->root.type != bfd_link_hash_defined
5271 && h->root.type != bfd_link_hash_defweak)
5273 value = h->root.u.def.value;
5276 value = sym->st_value;
5281 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5284 value += sym_sec->output_offset;
5285 value += sym_sec->output_section->vma;
5286 value -= htab->tls_sec->vma;
5287 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
5288 < (bfd_vma) 1 << 32);
5291 r_type = ELF64_R_TYPE (rel->r_info);
5294 case R_PPC64_GOT_TLSLD16:
5295 case R_PPC64_GOT_TLSLD16_LO:
5296 case R_PPC64_GOT_TLSLD16_HI:
5297 case R_PPC64_GOT_TLSLD16_HA:
5298 /* These relocs should never be against a symbol
5299 defined in a shared lib. Leave them alone if
5300 that turns out to be the case. */
5301 ppc64_tlsld_got (ibfd)->refcount -= 1;
5308 tls_type = TLS_TLS | TLS_LD;
5309 expecting_tls_get_addr = 1;
5312 case R_PPC64_GOT_TLSGD16:
5313 case R_PPC64_GOT_TLSGD16_LO:
5314 case R_PPC64_GOT_TLSGD16_HI:
5315 case R_PPC64_GOT_TLSGD16_HA:
5321 tls_set = TLS_TLS | TLS_TPRELGD;
5323 tls_type = TLS_TLS | TLS_GD;
5324 expecting_tls_get_addr = 1;
5327 case R_PPC64_GOT_TPREL16_DS:
5328 case R_PPC64_GOT_TPREL16_LO_DS:
5329 case R_PPC64_GOT_TPREL16_HI:
5330 case R_PPC64_GOT_TPREL16_HA:
5331 expecting_tls_get_addr = 0;
5336 tls_clear = TLS_TPREL;
5337 tls_type = TLS_TLS | TLS_TPREL;
5344 case R_PPC64_REL14_BRTAKEN:
5345 case R_PPC64_REL14_BRNTAKEN:
5348 && h == htab->tls_get_addr)
5350 if (!expecting_tls_get_addr
5352 && ((ELF64_R_TYPE (rel[-1].r_info)
5354 || (ELF64_R_TYPE (rel[-1].r_info)
5355 == R_PPC64_TOC16_LO)))
5357 /* Check for toc tls entries. */
5361 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
5365 if (toc_tls != NULL)
5366 expecting_tls_get_addr = retval > 1;
5369 if (expecting_tls_get_addr)
5371 struct plt_entry *ent;
5372 for (ent = h->plt.plist; ent; ent = ent->next)
5373 if (ent->addend == 0)
5375 if (ent->plt.refcount > 0)
5376 ent->plt.refcount -= 1;
5381 expecting_tls_get_addr = 0;
5384 case R_PPC64_TPREL64:
5385 expecting_tls_get_addr = 0;
5389 tls_set = TLS_EXPLICIT;
5390 tls_clear = TLS_TPREL;
5396 case R_PPC64_DTPMOD64:
5397 expecting_tls_get_addr = 0;
5398 if (rel + 1 < relend
5400 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
5401 && rel[1].r_offset == rel->r_offset + 8)
5405 tls_set = TLS_EXPLICIT | TLS_GD;
5408 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
5417 tls_set = TLS_EXPLICIT;
5423 expecting_tls_get_addr = 0;
5427 if ((tls_set & TLS_EXPLICIT) == 0)
5429 struct got_entry *ent;
5431 /* Adjust got entry for this reloc. */
5435 ent = elf_local_got_ents (ibfd)[r_symndx];
5437 for (; ent != NULL; ent = ent->next)
5438 if (ent->addend == rel->r_addend
5439 && ent->owner == ibfd
5440 && ent->tls_type == tls_type)
5447 /* We managed to get rid of a got entry. */
5448 if (ent->got.refcount > 0)
5449 ent->got.refcount -= 1;
5454 struct ppc_link_hash_entry * eh;
5455 struct ppc_dyn_relocs **pp;
5456 struct ppc_dyn_relocs *p;
5458 /* Adjust dynamic relocs. */
5459 eh = (struct ppc_link_hash_entry *) h;
5460 for (pp = &eh->dyn_relocs;
5465 /* If we got rid of a DTPMOD/DTPREL reloc
5466 pair then we'll lose one or two dyn
5468 if (tls_set == (TLS_EXPLICIT | TLS_GD))
5477 *tls_mask |= tls_set;
5478 *tls_mask &= ~tls_clear;
5481 if (elf_section_data (sec)->relocs != relstart)
5486 && (elf_tdata (ibfd)->symtab_hdr.contents
5487 != (unsigned char *) locsyms))
5489 if (!info->keep_memory)
5492 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
5498 /* This is the condition under which ppc64_elf_finish_dynamic_symbol
5499 will be called from elflink.h. If elflink.h doesn't call our
5500 finish_dynamic_symbol routine, we'll need to do something about
5501 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
5502 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
5505 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
5506 && ((H)->dynindx != -1 \
5507 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5509 /* Allocate space in .plt, .got and associated reloc sections for
5513 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5515 struct bfd_link_info *info;
5516 struct ppc_link_hash_table *htab;
5518 struct ppc_link_hash_entry *eh;
5519 struct ppc_dyn_relocs *p;
5520 struct got_entry *gent;
5522 if (h->root.type == bfd_link_hash_indirect)
5525 if (h->root.type == bfd_link_hash_warning)
5526 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5528 info = (struct bfd_link_info *) inf;
5529 htab = ppc_hash_table (info);
5531 if (htab->elf.dynamic_sections_created
5533 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5535 struct plt_entry *pent;
5536 bfd_boolean doneone = FALSE;
5537 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
5538 if (pent->plt.refcount > 0)
5540 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5542 /* If this is the first .plt entry, make room for the special
5545 if (s->_raw_size == 0)
5546 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
5548 pent->plt.offset = s->_raw_size;
5550 /* Make room for this entry. */
5551 s->_raw_size += PLT_ENTRY_SIZE;
5553 /* Make room for the .glink code. */
5555 if (s->_raw_size == 0)
5556 s->_raw_size += GLINK_CALL_STUB_SIZE;
5557 /* We need bigger stubs past index 32767. */
5558 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
5560 s->_raw_size += 2*4;
5562 /* We also need to make an entry in the .rela.plt section. */
5564 s->_raw_size += sizeof (Elf64_External_Rela);
5568 pent->plt.offset = (bfd_vma) -1;
5571 h->plt.plist = NULL;
5572 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5577 h->plt.plist = NULL;
5578 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5581 eh = (struct ppc_link_hash_entry *) h;
5582 /* Run through the TLS GD got entries first if we're changing them
5584 if ((eh->tls_mask & TLS_TPRELGD) != 0)
5585 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5586 if (gent->got.refcount > 0
5587 && (gent->tls_type & TLS_GD) != 0)
5589 /* This was a GD entry that has been converted to TPREL. If
5590 there happens to be a TPREL entry we can use that one. */
5591 struct got_entry *ent;
5592 for (ent = h->got.glist; ent != NULL; ent = ent->next)
5593 if (ent->got.refcount > 0
5594 && (ent->tls_type & TLS_TPREL) != 0
5595 && ent->addend == gent->addend
5596 && ent->owner == gent->owner)
5598 gent->got.refcount = 0;
5602 /* If not, then we'll be using our own TPREL entry. */
5603 if (gent->got.refcount != 0)
5604 gent->tls_type = TLS_TLS | TLS_TPREL;
5607 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5608 if (gent->got.refcount > 0)
5612 /* Make sure this symbol is output as a dynamic symbol.
5613 Undefined weak syms won't yet be marked as dynamic,
5614 nor will all TLS symbols. */
5615 if (h->dynindx == -1
5616 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5618 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
5622 if ((gent->tls_type & TLS_LD) != 0
5623 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5625 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
5629 s = ppc64_elf_tdata (gent->owner)->got;
5630 gent->got.offset = s->_raw_size;
5632 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
5633 dyn = htab->elf.dynamic_sections_created;
5635 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5636 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5637 || h->root.type != bfd_link_hash_undefweak))
5638 ppc64_elf_tdata (gent->owner)->relgot->_raw_size
5639 += (gent->tls_type & eh->tls_mask & TLS_GD
5640 ? 2 * sizeof (Elf64_External_Rela)
5641 : sizeof (Elf64_External_Rela));
5644 gent->got.offset = (bfd_vma) -1;
5646 if (eh->dyn_relocs == NULL)
5649 /* In the shared -Bsymbolic case, discard space allocated for
5650 dynamic pc-relative relocs against symbols which turn out to be
5651 defined in regular objects. For the normal shared case, discard
5652 space for relocs that have become local due to symbol visibility
5657 /* Relocs that use pc_count are those that appear on a call insn,
5658 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
5659 generated via assembly. We want calls to protected symbols to
5660 resolve directly to the function rather than going via the plt.
5661 If people want function pointer comparisons to work as expected
5662 then they should avoid writing weird assembly. */
5663 if (SYMBOL_CALLS_LOCAL (info, h))
5665 struct ppc_dyn_relocs **pp;
5667 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5669 p->count -= p->pc_count;
5678 /* Also discard relocs on undefined weak syms with non-default
5680 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5681 && h->root.type == bfd_link_hash_undefweak)
5682 eh->dyn_relocs = NULL;
5684 else if (ELIMINATE_COPY_RELOCS)
5686 /* For the non-shared case, discard space for relocs against
5687 symbols which turn out to need copy relocs or are not
5690 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5691 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5692 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
5694 /* Make sure this symbol is output as a dynamic symbol.
5695 Undefined weak syms won't yet be marked as dynamic. */
5696 if (h->dynindx == -1
5697 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5699 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
5703 /* If that succeeded, we know we'll be keeping all the
5705 if (h->dynindx != -1)
5709 eh->dyn_relocs = NULL;
5714 /* Finally, allocate space. */
5715 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5717 asection *sreloc = elf_section_data (p->sec)->sreloc;
5718 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
5724 /* Find any dynamic relocs that apply to read-only sections. */
5727 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5729 struct ppc_link_hash_entry *eh;
5730 struct ppc_dyn_relocs *p;
5732 if (h->root.type == bfd_link_hash_warning)
5733 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5735 eh = (struct ppc_link_hash_entry *) h;
5736 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5738 asection *s = p->sec->output_section;
5740 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5742 struct bfd_link_info *info = inf;
5744 info->flags |= DF_TEXTREL;
5746 /* Not an error, just cut short the traversal. */
5753 /* Set the sizes of the dynamic sections. */
5756 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5757 struct bfd_link_info *info)
5759 struct ppc_link_hash_table *htab;
5765 htab = ppc_hash_table (info);
5766 dynobj = htab->elf.dynobj;
5770 if (htab->elf.dynamic_sections_created)
5772 /* Set the contents of the .interp section to the interpreter. */
5773 if (info->executable)
5775 s = bfd_get_section_by_name (dynobj, ".interp");
5778 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
5779 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5783 /* Set up .got offsets for local syms, and space for local dynamic
5785 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5787 struct got_entry **lgot_ents;
5788 struct got_entry **end_lgot_ents;
5790 bfd_size_type locsymcount;
5791 Elf_Internal_Shdr *symtab_hdr;
5794 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
5797 if (ppc64_tlsld_got (ibfd)->refcount > 0)
5799 s = ppc64_elf_tdata (ibfd)->got;
5800 ppc64_tlsld_got (ibfd)->offset = s->_raw_size;
5804 srel = ppc64_elf_tdata (ibfd)->relgot;
5805 srel->_raw_size += sizeof (Elf64_External_Rela);
5809 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
5811 for (s = ibfd->sections; s != NULL; s = s->next)
5813 struct ppc_dyn_relocs *p;
5815 for (p = *((struct ppc_dyn_relocs **)
5816 &elf_section_data (s)->local_dynrel);
5820 if (!bfd_is_abs_section (p->sec)
5821 && bfd_is_abs_section (p->sec->output_section))
5823 /* Input section has been discarded, either because
5824 it is a copy of a linkonce section or due to
5825 linker script /DISCARD/, so we'll be discarding
5828 else if (p->count != 0)
5830 srel = elf_section_data (p->sec)->sreloc;
5831 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
5832 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
5833 info->flags |= DF_TEXTREL;
5838 lgot_ents = elf_local_got_ents (ibfd);
5842 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5843 locsymcount = symtab_hdr->sh_info;
5844 end_lgot_ents = lgot_ents + locsymcount;
5845 lgot_masks = (char *) end_lgot_ents;
5846 s = ppc64_elf_tdata (ibfd)->got;
5847 srel = ppc64_elf_tdata (ibfd)->relgot;
5848 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
5850 struct got_entry *ent;
5852 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
5853 if (ent->got.refcount > 0)
5855 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
5857 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
5859 ppc64_tlsld_got (ibfd)->offset = s->_raw_size;
5862 srel->_raw_size += sizeof (Elf64_External_Rela);
5864 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
5868 ent->got.offset = s->_raw_size;
5869 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
5873 srel->_raw_size += 2 * sizeof (Elf64_External_Rela);
5879 srel->_raw_size += sizeof (Elf64_External_Rela);
5884 ent->got.offset = (bfd_vma) -1;
5888 /* Allocate global sym .plt and .got entries, and space for global
5889 sym dynamic relocs. */
5890 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
5892 /* We now have determined the sizes of the various dynamic sections.
5893 Allocate memory for them. */
5895 for (s = dynobj->sections; s != NULL; s = s->next)
5897 if ((s->flags & SEC_LINKER_CREATED) == 0)
5900 /* Reset _cooked_size since prelim layout will set it wrongly,
5901 and a non-zero _cooked_size sticks. */
5902 s->_cooked_size = 0;
5904 if (s == htab->brlt || s == htab->relbrlt)
5905 /* These haven't been allocated yet; don't strip. */
5907 else if (s == htab->got
5909 || s == htab->glink)
5911 /* Strip this section if we don't need it; see the
5914 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5916 if (s->_raw_size == 0)
5918 /* If we don't need this section, strip it from the
5919 output file. This is mostly to handle .rela.bss and
5920 .rela.plt. We must create both sections in
5921 create_dynamic_sections, because they must be created
5922 before the linker maps input sections to output
5923 sections. The linker does that before
5924 adjust_dynamic_symbol is called, and it is that
5925 function which decides whether anything needs to go
5926 into these sections. */
5930 if (s != htab->relplt)
5933 /* We use the reloc_count field as a counter if we need
5934 to copy relocs into the output file. */
5940 /* It's not one of our sections, so don't allocate space. */
5944 if (s->_raw_size == 0)
5946 _bfd_strip_section_from_output (info, s);
5950 /* .plt is in the bss section. We don't initialise it. */
5951 if ((s->flags & SEC_LOAD) == 0)
5954 /* Allocate memory for the section contents. We use bfd_zalloc
5955 here in case unused entries are not reclaimed before the
5956 section's contents are written out. This should not happen,
5957 but this way if it does we get a R_PPC64_NONE reloc in .rela
5958 sections instead of garbage.
5959 We also rely on the section contents being zero when writing
5961 s->contents = bfd_zalloc (dynobj, s->_raw_size);
5962 if (s->contents == NULL)
5966 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5968 s = ppc64_elf_tdata (ibfd)->got;
5969 if (s != NULL && s != htab->got)
5971 s->_cooked_size = 0;
5972 if (s->_raw_size == 0)
5973 _bfd_strip_section_from_output (info, s);
5976 s->contents = bfd_zalloc (ibfd, s->_raw_size);
5977 if (s->contents == NULL)
5981 s = ppc64_elf_tdata (ibfd)->relgot;
5984 s->_cooked_size = 0;
5985 if (s->_raw_size == 0)
5986 _bfd_strip_section_from_output (info, s);
5989 s->contents = bfd_zalloc (ibfd, s->_raw_size);
5990 if (s->contents == NULL)
5998 if (htab->elf.dynamic_sections_created)
6000 /* Add some entries to the .dynamic section. We fill in the
6001 values later, in ppc64_elf_finish_dynamic_sections, but we
6002 must add the entries now so that we get the correct size for
6003 the .dynamic section. The DT_DEBUG entry is filled in by the
6004 dynamic linker and used by the debugger. */
6005 #define add_dynamic_entry(TAG, VAL) \
6006 bfd_elf64_add_dynamic_entry (info, (TAG), (VAL))
6008 if (info->executable)
6010 if (!add_dynamic_entry (DT_DEBUG, 0))
6014 if (htab->plt != NULL && htab->plt->_raw_size != 0)
6016 if (!add_dynamic_entry (DT_PLTGOT, 0)
6017 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6018 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6019 || !add_dynamic_entry (DT_JMPREL, 0)
6020 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
6026 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
6027 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
6033 if (!add_dynamic_entry (DT_RELA, 0)
6034 || !add_dynamic_entry (DT_RELASZ, 0)
6035 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
6038 /* If any dynamic relocs apply to a read-only section,
6039 then we need a DT_TEXTREL entry. */
6040 if ((info->flags & DF_TEXTREL) == 0)
6041 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
6043 if ((info->flags & DF_TEXTREL) != 0)
6045 if (!add_dynamic_entry (DT_TEXTREL, 0))
6050 #undef add_dynamic_entry
6055 /* Determine the type of stub needed, if any, for a call. */
6057 static inline enum ppc_stub_type
6058 ppc_type_of_stub (asection *input_sec,
6059 const Elf_Internal_Rela *rel,
6060 struct ppc_link_hash_entry **hash,
6061 bfd_vma destination)
6063 struct ppc_link_hash_entry *h = *hash;
6065 bfd_vma branch_offset;
6066 bfd_vma max_branch_offset;
6067 enum elf_ppc64_reloc_type r_type;
6072 && h->oh->dynindx != -1)
6074 struct plt_entry *ent;
6075 for (ent = h->oh->plt.plist; ent != NULL; ent = ent->next)
6076 if (ent->addend == rel->r_addend
6077 && ent->plt.offset != (bfd_vma) -1)
6079 *hash = (struct ppc_link_hash_entry *) h->oh;
6080 return ppc_stub_plt_call;
6084 if (h->elf.root.type != bfd_link_hash_defined
6085 && h->elf.root.type != bfd_link_hash_defweak)
6086 return ppc_stub_none;
6089 /* Determine where the call point is. */
6090 location = (input_sec->output_offset
6091 + input_sec->output_section->vma
6094 branch_offset = destination - location;
6095 r_type = ELF64_R_TYPE (rel->r_info);
6097 /* Determine if a long branch stub is needed. */
6098 max_branch_offset = 1 << 25;
6099 if (r_type != R_PPC64_REL24)
6100 max_branch_offset = 1 << 15;
6102 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
6103 /* We need a stub. Figure out whether a long_branch or plt_branch
6105 return ppc_stub_long_branch;
6107 return ppc_stub_none;
6110 /* Build a .plt call stub. */
6112 static inline bfd_byte *
6113 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
6115 #define PPC_LO(v) ((v) & 0xffff)
6116 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6117 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6119 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
6120 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
6121 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6122 if (PPC_HA (offset + 8) != PPC_HA (offset))
6123 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
6125 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
6126 if (PPC_HA (offset + 8) != PPC_HA (offset))
6127 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
6129 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
6130 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6131 bfd_put_32 (obfd, BCTR, p), p += 4;
6136 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
6138 struct ppc_stub_hash_entry *stub_entry;
6139 struct ppc_branch_hash_entry *br_entry;
6140 struct bfd_link_info *info;
6141 struct ppc_link_hash_table *htab;
6145 struct plt_entry *ent;
6149 /* Massage our args to the form they really have. */
6150 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6153 htab = ppc_hash_table (info);
6155 /* Make a note of the offset within the stubs for this entry. */
6156 stub_entry->stub_offset = stub_entry->stub_sec->_cooked_size;
6157 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
6159 htab->stub_count[stub_entry->stub_type - 1] += 1;
6160 switch (stub_entry->stub_type)
6162 case ppc_stub_long_branch:
6163 case ppc_stub_long_branch_r2off:
6164 /* Branches are relative. This is where we are going to. */
6165 off = (stub_entry->target_value
6166 + stub_entry->target_section->output_offset
6167 + stub_entry->target_section->output_section->vma);
6169 /* And this is where we are coming from. */
6170 off -= (stub_entry->stub_offset
6171 + stub_entry->stub_sec->output_offset
6172 + stub_entry->stub_sec->output_section->vma);
6174 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
6180 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6181 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6182 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
6184 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
6186 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
6191 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
6193 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
6196 case ppc_stub_plt_branch:
6197 case ppc_stub_plt_branch_r2off:
6198 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6199 stub_entry->root.string + 9,
6201 if (br_entry == NULL)
6203 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
6204 stub_entry->root.string + 9);
6205 htab->stub_error = TRUE;
6209 off = (stub_entry->target_value
6210 + stub_entry->target_section->output_offset
6211 + stub_entry->target_section->output_section->vma);
6213 bfd_put_64 (htab->brlt->owner, off,
6214 htab->brlt->contents + br_entry->offset);
6218 /* Create a reloc for the branch lookup table entry. */
6219 Elf_Internal_Rela rela;
6222 rela.r_offset = (br_entry->offset
6223 + htab->brlt->output_offset
6224 + htab->brlt->output_section->vma);
6225 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6226 rela.r_addend = off;
6228 rl = htab->relbrlt->contents;
6229 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
6230 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
6233 off = (br_entry->offset
6234 + htab->brlt->output_offset
6235 + htab->brlt->output_section->vma
6236 - elf_gp (htab->brlt->output_section->owner)
6237 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6239 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
6241 (*_bfd_error_handler)
6242 (_("linkage table error against `%s'"),
6243 stub_entry->root.string);
6244 bfd_set_error (bfd_error_bad_value);
6245 htab->stub_error = TRUE;
6250 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
6252 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
6254 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
6261 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6262 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6263 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
6265 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
6267 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
6269 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
6271 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
6275 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
6277 bfd_put_32 (htab->stub_bfd, BCTR, loc);
6280 case ppc_stub_plt_call:
6281 /* Do the best we can for shared libraries built without
6282 exporting ".foo" for each "foo". This can happen when symbol
6283 versioning scripts strip all bar a subset of symbols. */
6284 if (stub_entry->h->oh->root.type != bfd_link_hash_defined
6285 && stub_entry->h->oh->root.type != bfd_link_hash_defweak)
6287 /* Point the symbol at the stub. There may be multiple stubs,
6288 we don't really care; The main thing is to make this sym
6289 defined somewhere. Maybe defining the symbol in the stub
6290 section is a silly idea. If we didn't do this, htab->top_id
6292 stub_entry->h->oh->root.type = bfd_link_hash_defined;
6293 stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
6294 stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
6297 /* Now build the stub. */
6299 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6300 if (ent->addend == stub_entry->addend)
6302 off = ent->plt.offset;
6305 if (off >= (bfd_vma) -2)
6308 off &= ~ (bfd_vma) 1;
6309 off += (htab->plt->output_offset
6310 + htab->plt->output_section->vma
6311 - elf_gp (htab->plt->output_section->owner)
6312 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6314 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
6316 (*_bfd_error_handler)
6317 (_("linkage table error against `%s'"),
6318 stub_entry->h->elf.root.root.string);
6319 bfd_set_error (bfd_error_bad_value);
6320 htab->stub_error = TRUE;
6324 p = build_plt_stub (htab->stub_bfd, loc, off);
6333 stub_entry->stub_sec->_cooked_size += size;
6335 if (htab->emit_stub_syms
6336 && !(stub_entry->stub_type == ppc_stub_plt_call
6337 && stub_entry->h->oh->root.type == bfd_link_hash_defined
6338 && stub_entry->h->oh->root.u.def.section == stub_entry->stub_sec
6339 && stub_entry->h->oh->root.u.def.value == stub_entry->stub_offset))
6341 struct elf_link_hash_entry *h;
6342 h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string,
6343 TRUE, FALSE, FALSE);
6346 if (h->root.type == bfd_link_hash_new)
6348 h->root.type = bfd_link_hash_defined;
6349 h->root.u.def.section = stub_entry->stub_sec;
6350 h->root.u.def.value = stub_entry->stub_offset;
6351 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
6352 | ELF_LINK_HASH_DEF_REGULAR
6353 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
6354 | ELF_LINK_FORCED_LOCAL);
6361 /* As above, but don't actually build the stub. Just bump offset so
6362 we know stub section sizes, and select plt_branch stubs where
6363 long_branch stubs won't do. */
6366 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
6368 struct ppc_stub_hash_entry *stub_entry;
6369 struct ppc_link_hash_table *htab;
6373 /* Massage our args to the form they really have. */
6374 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6377 if (stub_entry->stub_type == ppc_stub_plt_call)
6379 struct plt_entry *ent;
6381 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6382 if (ent->addend == stub_entry->addend)
6384 off = ent->plt.offset & ~(bfd_vma) 1;
6387 if (off >= (bfd_vma) -2)
6389 off += (htab->plt->output_offset
6390 + htab->plt->output_section->vma
6391 - elf_gp (htab->plt->output_section->owner)
6392 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6394 size = PLT_CALL_STUB_SIZE;
6395 if (PPC_HA (off + 16) != PPC_HA (off))
6400 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
6402 off = (stub_entry->target_value
6403 + stub_entry->target_section->output_offset
6404 + stub_entry->target_section->output_section->vma);
6405 off -= (stub_entry->stub_sec->_raw_size
6406 + stub_entry->stub_sec->output_offset
6407 + stub_entry->stub_sec->output_section->vma);
6409 /* Reset the stub type from the plt variant in case we now
6410 can reach with a shorter stub. */
6411 if (stub_entry->stub_type >= ppc_stub_plt_branch)
6412 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
6415 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
6421 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
6422 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
6424 struct ppc_branch_hash_entry *br_entry;
6426 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6427 stub_entry->root.string + 9,
6429 if (br_entry == NULL)
6431 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
6432 stub_entry->root.string + 9);
6433 htab->stub_error = TRUE;
6437 if (br_entry->iter != htab->stub_iteration)
6439 br_entry->iter = htab->stub_iteration;
6440 br_entry->offset = htab->brlt->_raw_size;
6441 htab->brlt->_raw_size += 8;
6444 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
6446 if (stub_entry->stub_type != ppc_stub_plt_branch)
6451 stub_entry->stub_sec->_raw_size += size;
6455 /* Set up various things so that we can make a list of input sections
6456 for each output section included in the link. Returns -1 on error,
6457 0 when no stubs will be needed, and 1 on success. */
6460 ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
6463 int top_id, top_index, id;
6465 asection **input_list;
6467 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6469 if (htab->brlt == NULL)
6472 /* Find the top input section id. */
6473 for (input_bfd = info->input_bfds, top_id = 3;
6475 input_bfd = input_bfd->link_next)
6477 for (section = input_bfd->sections;
6479 section = section->next)
6481 if (top_id < section->id)
6482 top_id = section->id;
6486 htab->top_id = top_id;
6487 amt = sizeof (struct map_stub) * (top_id + 1);
6488 htab->stub_group = bfd_zmalloc (amt);
6489 if (htab->stub_group == NULL)
6492 /* Set toc_off for com, und, abs and ind sections. */
6493 for (id = 0; id < 3; id++)
6494 htab->stub_group[id].toc_off = TOC_BASE_OFF;
6496 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
6498 /* We can't use output_bfd->section_count here to find the top output
6499 section index as some sections may have been removed, and
6500 _bfd_strip_section_from_output doesn't renumber the indices. */
6501 for (section = output_bfd->sections, top_index = 0;
6503 section = section->next)
6505 if (top_index < section->index)
6506 top_index = section->index;
6509 htab->top_index = top_index;
6510 amt = sizeof (asection *) * (top_index + 1);
6511 input_list = bfd_zmalloc (amt);
6512 htab->input_list = input_list;
6513 if (input_list == NULL)
6519 /* The linker repeatedly calls this function for each TOC input section
6520 and linker generated GOT section. Group input bfds such that the toc
6521 within a group is less than 64k in size. Will break with cute linker
6522 scripts that play games with dot in the output toc section. */
6525 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
6527 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6529 if (!htab->no_multi_toc)
6531 bfd_vma addr = isec->output_offset + isec->output_section->vma;
6532 bfd_vma off = addr - htab->toc_curr;
6533 if (off + isec->_raw_size > 0x10000)
6535 htab->toc_curr = addr;
6536 htab->multi_toc_needed = 1;
6538 elf_gp (isec->owner) = (htab->toc_curr
6539 - elf_gp (isec->output_section->owner)
6544 /* Called after the last call to the above function. */
6547 ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
6548 struct bfd_link_info *info)
6550 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6552 /* toc_curr tracks the TOC offset used for code sections below in
6553 ppc64_elf_next_input_section. Start off at 0x8000. */
6554 htab->toc_curr = TOC_BASE_OFF;
6557 /* No toc references were found in ISEC. If the code in ISEC makes no
6558 calls, then there's no need to use toc adjusting stubs when branching
6559 into ISEC. Actually, indirect calls from ISEC are OK as they will
6563 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
6570 /* We know none of our code bearing sections will need toc stubs. */
6571 if ((isec->flags & SEC_LINKER_CREATED) != 0)
6574 /* Hack for linux kernel. .fixup contains branches, but only back to
6575 the function that hit an exception. */
6576 branch_ok = strcmp (isec->name, ".fixup") == 0;
6578 contents = elf_section_data (isec)->this_hdr.contents;
6579 if (contents == NULL)
6581 contents = bfd_malloc (isec->_raw_size);
6582 if (contents == NULL)
6584 if (! bfd_get_section_contents (isec->owner, isec, contents,
6585 0, isec->_raw_size))
6590 if (info->keep_memory)
6591 elf_section_data (isec)->this_hdr.contents = contents;
6594 /* Code scan, because we don't necessarily have relocs on calls to
6595 static functions. */
6597 for (i = 0; i < isec->_raw_size; i += 4)
6599 unsigned long insn = bfd_get_32 (isec->owner, contents + i);
6600 /* Is this a branch? */
6601 if ((insn & (0x3f << 26)) == (18 << 26)
6602 /* If branch and link, it's a function call. */
6604 /* Sibling calls use a plain branch. I don't know a way
6605 of deciding whether a branch is really a sibling call. */
6613 if (elf_section_data (isec)->this_hdr.contents != contents)
6618 /* The linker repeatedly calls this function for each input section,
6619 in the order that input sections are linked into output sections.
6620 Build lists of input sections to determine groupings between which
6621 we may insert linker stubs. */
6624 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
6626 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6629 if ((isec->output_section->flags & SEC_CODE) != 0
6630 && isec->output_section->index <= htab->top_index)
6632 asection **list = htab->input_list + isec->output_section->index;
6633 /* Steal the link_sec pointer for our list. */
6634 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
6635 /* This happens to make the list in reverse order,
6636 which is what we want. */
6637 PREV_SEC (isec) = *list;
6641 /* If a code section has a function that uses the TOC then we need
6642 to use the right TOC (obviously). Also, make sure that .opd gets
6643 the correct TOC value for R_PPC64_TOC relocs that don't have or
6644 can't find their function symbol (shouldn't ever happen now). */
6645 if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
6647 if (elf_gp (isec->owner) != 0)
6648 htab->toc_curr = elf_gp (isec->owner);
6650 else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
6653 isec->has_gp_reloc = ret;
6655 /* Functions that don't use the TOC can belong in any TOC group.
6656 Use the last TOC base. This happens to make _init and _fini
6658 htab->stub_group[isec->id].toc_off = htab->toc_curr;
6662 /* See whether we can group stub sections together. Grouping stub
6663 sections may result in fewer stubs. More importantly, we need to
6664 put all .init* and .fini* stubs at the beginning of the .init or
6665 .fini output sections respectively, because glibc splits the
6666 _init and _fini functions into multiple parts. Putting a stub in
6667 the middle of a function is not a good idea. */
6670 group_sections (struct ppc_link_hash_table *htab,
6671 bfd_size_type stub_group_size,
6672 bfd_boolean stubs_always_before_branch)
6674 asection **list = htab->input_list + htab->top_index;
6677 asection *tail = *list;
6678 while (tail != NULL)
6682 bfd_size_type total;
6683 bfd_boolean big_sec;
6687 if (tail->_cooked_size)
6688 total = tail->_cooked_size;
6690 total = tail->_raw_size;
6691 big_sec = total >= stub_group_size;
6692 curr_toc = htab->stub_group[tail->id].toc_off;
6694 while ((prev = PREV_SEC (curr)) != NULL
6695 && ((total += curr->output_offset - prev->output_offset)
6697 && htab->stub_group[prev->id].toc_off == curr_toc)
6700 /* OK, the size from the start of CURR to the end is less
6701 than stub_group_size and thus can be handled by one stub
6702 section. (or the tail section is itself larger than
6703 stub_group_size, in which case we may be toast.) We
6704 should really be keeping track of the total size of stubs
6705 added here, as stubs contribute to the final output
6706 section size. That's a little tricky, and this way will
6707 only break if stubs added make the total size more than
6708 2^25, ie. for the default stub_group_size, if stubs total
6709 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6712 prev = PREV_SEC (tail);
6713 /* Set up this stub group. */
6714 htab->stub_group[tail->id].link_sec = curr;
6716 while (tail != curr && (tail = prev) != NULL);
6718 /* But wait, there's more! Input sections up to stub_group_size
6719 bytes before the stub section can be handled by it too.
6720 Don't do this if we have a really large section after the
6721 stubs, as adding more stubs increases the chance that
6722 branches may not reach into the stub section. */
6723 if (!stubs_always_before_branch && !big_sec)
6727 && ((total += tail->output_offset - prev->output_offset)
6729 && htab->stub_group[prev->id].toc_off == curr_toc)
6732 prev = PREV_SEC (tail);
6733 htab->stub_group[tail->id].link_sec = curr;
6739 while (list-- != htab->input_list);
6740 free (htab->input_list);
6744 /* Determine and set the size of the stub section for a final link.
6746 The basic idea here is to examine all the relocations looking for
6747 PC-relative calls to a target that is unreachable with a "bl"
6751 ppc64_elf_size_stubs (bfd *output_bfd,
6752 struct bfd_link_info *info,
6753 bfd_signed_vma group_size,
6754 asection *(*add_stub_section) (const char *, asection *),
6755 void (*layout_sections_again) (void))
6757 bfd_size_type stub_group_size;
6758 bfd_boolean stubs_always_before_branch;
6759 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6761 /* Stash our params away. */
6762 htab->add_stub_section = add_stub_section;
6763 htab->layout_sections_again = layout_sections_again;
6764 stubs_always_before_branch = group_size < 0;
6766 stub_group_size = -group_size;
6768 stub_group_size = group_size;
6769 if (stub_group_size == 1)
6771 /* Default values. */
6772 if (stubs_always_before_branch)
6774 stub_group_size = 0x1e00000;
6775 if (htab->has_14bit_branch)
6776 stub_group_size = 0x7800;
6780 stub_group_size = 0x1c00000;
6781 if (htab->has_14bit_branch)
6782 stub_group_size = 0x7000;
6786 group_sections (htab, stub_group_size, stubs_always_before_branch);
6791 unsigned int bfd_indx;
6793 bfd_boolean stub_changed;
6795 htab->stub_iteration += 1;
6796 stub_changed = FALSE;
6798 for (input_bfd = info->input_bfds, bfd_indx = 0;
6800 input_bfd = input_bfd->link_next, bfd_indx++)
6802 Elf_Internal_Shdr *symtab_hdr;
6804 Elf_Internal_Sym *local_syms = NULL;
6806 /* We'll need the symbol table in a second. */
6807 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6808 if (symtab_hdr->sh_info == 0)
6811 /* Walk over each section attached to the input bfd. */
6812 for (section = input_bfd->sections;
6814 section = section->next)
6816 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
6818 /* If there aren't any relocs, then there's nothing more
6820 if ((section->flags & SEC_RELOC) == 0
6821 || section->reloc_count == 0)
6824 /* If this section is a link-once section that will be
6825 discarded, then don't create any stubs. */
6826 if (section->output_section == NULL
6827 || section->output_section->owner != output_bfd)
6830 /* Get the relocs. */
6832 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
6834 if (internal_relocs == NULL)
6835 goto error_ret_free_local;
6837 /* Now examine each relocation. */
6838 irela = internal_relocs;
6839 irelaend = irela + section->reloc_count;
6840 for (; irela < irelaend; irela++)
6842 enum elf_ppc64_reloc_type r_type;
6843 unsigned int r_indx;
6844 enum ppc_stub_type stub_type;
6845 struct ppc_stub_hash_entry *stub_entry;
6848 bfd_vma destination;
6849 struct ppc_link_hash_entry *hash;
6850 struct elf_link_hash_entry *h;
6851 Elf_Internal_Sym *sym;
6853 const asection *id_sec;
6855 r_type = ELF64_R_TYPE (irela->r_info);
6856 r_indx = ELF64_R_SYM (irela->r_info);
6858 if (r_type >= R_PPC64_max)
6860 bfd_set_error (bfd_error_bad_value);
6861 goto error_ret_free_internal;
6864 /* Only look for stubs on branch instructions. */
6865 if (r_type != R_PPC64_REL24
6866 && r_type != R_PPC64_REL14
6867 && r_type != R_PPC64_REL14_BRTAKEN
6868 && r_type != R_PPC64_REL14_BRNTAKEN)
6871 /* Now determine the call target, its name, value,
6874 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6876 goto error_ret_free_internal;
6877 hash = (struct ppc_link_hash_entry *) h;
6881 /* It's a local symbol. */
6882 sym_value = sym->st_value;
6883 destination = (sym_value + irela->r_addend
6884 + sym_sec->output_offset
6885 + sym_sec->output_section->vma);
6889 /* It's an external symbol. */
6891 if (hash->elf.root.type == bfd_link_hash_defined
6892 || hash->elf.root.type == bfd_link_hash_defweak)
6894 sym_value = hash->elf.root.u.def.value;
6895 if (sym_sec->output_section != NULL)
6896 destination = (sym_value + irela->r_addend
6897 + sym_sec->output_offset
6898 + sym_sec->output_section->vma);
6900 else if (hash->elf.root.type == bfd_link_hash_undefweak)
6902 else if (hash->elf.root.type == bfd_link_hash_undefined)
6906 bfd_set_error (bfd_error_bad_value);
6907 goto error_ret_free_internal;
6911 /* Determine what (if any) linker stub is needed. */
6912 stub_type = ppc_type_of_stub (section, irela, &hash,
6915 if (stub_type != ppc_stub_plt_call)
6917 /* Check whether we need a TOC adjusting stub.
6918 Since the linker pastes together pieces from
6919 different object files when creating the
6920 _init and _fini functions, it may be that a
6921 call to what looks like a local sym is in
6922 fact a call needing a TOC adjustment. */
6924 && sym_sec->output_section != NULL
6925 && (htab->stub_group[sym_sec->id].toc_off
6926 != htab->stub_group[section->id].toc_off)
6927 && sym_sec->has_gp_reloc
6928 && section->has_gp_reloc)
6929 stub_type = ppc_stub_long_branch_r2off;
6932 if (stub_type == ppc_stub_none)
6935 /* __tls_get_addr calls might be eliminated. */
6936 if (stub_type != ppc_stub_plt_call
6938 && &hash->elf == htab->tls_get_addr
6939 && section->has_tls_reloc
6940 && irela != internal_relocs)
6945 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
6946 irela - 1, input_bfd))
6947 goto error_ret_free_internal;
6952 /* Support for grouping stub sections. */
6953 id_sec = htab->stub_group[section->id].link_sec;
6955 /* Get the name of this stub. */
6956 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
6958 goto error_ret_free_internal;
6960 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
6961 stub_name, FALSE, FALSE);
6962 if (stub_entry != NULL)
6964 /* The proper stub has already been created. */
6969 stub_entry = ppc_add_stub (stub_name, section, htab);
6970 if (stub_entry == NULL)
6973 error_ret_free_internal:
6974 if (elf_section_data (section)->relocs == NULL)
6975 free (internal_relocs);
6976 error_ret_free_local:
6977 if (local_syms != NULL
6978 && (symtab_hdr->contents
6979 != (unsigned char *) local_syms))
6984 stub_entry->stub_type = stub_type;
6985 stub_entry->target_value = sym_value;
6986 stub_entry->target_section = sym_sec;
6987 stub_entry->h = hash;
6988 stub_entry->addend = irela->r_addend;
6989 stub_changed = TRUE;
6992 /* We're done with the internal relocs, free them. */
6993 if (elf_section_data (section)->relocs != internal_relocs)
6994 free (internal_relocs);
6997 if (local_syms != NULL
6998 && symtab_hdr->contents != (unsigned char *) local_syms)
7000 if (!info->keep_memory)
7003 symtab_hdr->contents = (unsigned char *) local_syms;
7010 /* OK, we've added some stubs. Find out the new size of the
7012 for (stub_sec = htab->stub_bfd->sections;
7014 stub_sec = stub_sec->next)
7015 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7017 stub_sec->_raw_size = 0;
7018 stub_sec->_cooked_size = 0;
7020 htab->brlt->_raw_size = 0;
7021 htab->brlt->_cooked_size = 0;
7023 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab);
7025 /* Ask the linker to do its stuff. */
7026 (*htab->layout_sections_again) ();
7029 /* It would be nice to strip .branch_lt from the output if the
7030 section is empty, but it's too late. If we strip sections here,
7031 the dynamic symbol table is corrupted since the section symbol
7032 for the stripped section isn't written. */
7037 /* Called after we have determined section placement. If sections
7038 move, we'll be called again. Provide a value for TOCstart. */
7041 ppc64_elf_toc (bfd *obfd)
7046 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
7047 order. The TOC starts where the first of these sections starts. */
7048 s = bfd_get_section_by_name (obfd, ".got");
7050 s = bfd_get_section_by_name (obfd, ".toc");
7052 s = bfd_get_section_by_name (obfd, ".tocbss");
7054 s = bfd_get_section_by_name (obfd, ".plt");
7057 /* This may happen for
7058 o references to TOC base (SYM@toc / TOC[tc0]) without a
7061 o --gc-sections and empty TOC sections
7063 FIXME: Warn user? */
7065 /* Look for a likely section. We probably won't even be
7067 for (s = obfd->sections; s != NULL; s = s->next)
7068 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
7069 == (SEC_ALLOC | SEC_SMALL_DATA))
7072 for (s = obfd->sections; s != NULL; s = s->next)
7073 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
7074 == (SEC_ALLOC | SEC_SMALL_DATA))
7077 for (s = obfd->sections; s != NULL; s = s->next)
7078 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
7081 for (s = obfd->sections; s != NULL; s = s->next)
7082 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
7088 TOCstart = s->output_section->vma + s->output_offset;
7093 /* Build all the stubs associated with the current output file.
7094 The stubs are kept in a hash table attached to the main linker
7095 hash table. This function is called via gldelf64ppc_finish. */
7098 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
7099 struct bfd_link_info *info,
7102 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7105 int stub_sec_count = 0;
7107 htab->emit_stub_syms = emit_stub_syms;
7108 for (stub_sec = htab->stub_bfd->sections;
7110 stub_sec = stub_sec->next)
7111 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7115 /* Allocate memory to hold the linker stubs. */
7116 size = stub_sec->_raw_size;
7119 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
7120 if (stub_sec->contents == NULL)
7123 stub_sec->_cooked_size = 0;
7126 if (htab->plt != NULL)
7131 /* Build the .glink plt call stub. */
7132 plt0 = (htab->plt->output_section->vma
7133 + htab->plt->output_offset
7134 - (htab->glink->output_section->vma
7135 + htab->glink->output_offset
7136 + GLINK_CALL_STUB_SIZE));
7137 if (plt0 + 0x80008000 > 0xffffffff)
7139 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
7140 bfd_set_error (bfd_error_bad_value);
7144 if (htab->emit_stub_syms)
7146 struct elf_link_hash_entry *h;
7147 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
7150 if (h->root.type == bfd_link_hash_new)
7152 h->root.type = bfd_link_hash_defined;
7153 h->root.u.def.section = htab->glink;
7154 h->root.u.def.value = 0;
7155 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
7156 | ELF_LINK_HASH_DEF_REGULAR
7157 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7158 | ELF_LINK_FORCED_LOCAL);
7161 p = htab->glink->contents;
7162 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
7164 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
7166 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
7168 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
7170 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
7172 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
7174 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
7176 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
7178 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
7180 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
7182 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
7184 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
7186 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
7188 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
7190 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
7192 bfd_put_32 (htab->glink->owner, BCTR, p);
7195 /* Build the .glink lazy link call stubs. */
7197 while (p < htab->glink->contents + htab->glink->_raw_size)
7201 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
7206 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
7208 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
7211 bfd_put_32 (htab->glink->owner,
7212 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
7216 htab->glink->_cooked_size = p - htab->glink->contents;
7219 if (htab->brlt->_raw_size != 0)
7221 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
7222 htab->brlt->_raw_size);
7223 if (htab->brlt->contents == NULL)
7227 /* Build the stubs as directed by the stub hash table. */
7228 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
7230 for (stub_sec = htab->stub_bfd->sections;
7232 stub_sec = stub_sec->next)
7233 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7235 stub_sec_count += 1;
7236 if (stub_sec->_raw_size != stub_sec->_cooked_size)
7240 if (stub_sec != NULL
7241 || htab->glink->_raw_size != htab->glink->_cooked_size)
7243 htab->stub_error = TRUE;
7244 (*_bfd_error_handler) (_("stubs don't match calculated size"));
7247 if (htab->stub_error)
7252 *stats = bfd_malloc (500);
7256 sprintf (*stats, _("linker stubs in %u groups\n"
7259 " long branch %lu\n"
7260 " long toc adj %lu\n"
7263 htab->stub_count[ppc_stub_long_branch - 1],
7264 htab->stub_count[ppc_stub_long_branch_r2off - 1],
7265 htab->stub_count[ppc_stub_plt_branch - 1],
7266 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
7267 htab->stub_count[ppc_stub_plt_call - 1]);
7272 /* The RELOCATE_SECTION function is called by the ELF backend linker
7273 to handle the relocations for a section.
7275 The relocs are always passed as Rela structures; if the section
7276 actually uses Rel structures, the r_addend field will always be
7279 This function is responsible for adjust the section contents as
7280 necessary, and (if using Rela relocs and generating a
7281 relocatable output file) adjusting the reloc addend as
7284 This function does not have to worry about setting the reloc
7285 address or the reloc symbol index.
7287 LOCAL_SYMS is a pointer to the swapped in local symbols.
7289 LOCAL_SECTIONS is an array giving the section in the input file
7290 corresponding to the st_shndx field of each local symbol.
7292 The global hash table entry for the global symbols can be found
7293 via elf_sym_hashes (input_bfd).
7295 When generating relocatable output, this function must handle
7296 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7297 going to be the section symbol corresponding to the output
7298 section, which means that the addend must be adjusted
7302 ppc64_elf_relocate_section (bfd *output_bfd,
7303 struct bfd_link_info *info,
7305 asection *input_section,
7307 Elf_Internal_Rela *relocs,
7308 Elf_Internal_Sym *local_syms,
7309 asection **local_sections)
7311 struct ppc_link_hash_table *htab;
7312 Elf_Internal_Shdr *symtab_hdr;
7313 struct elf_link_hash_entry **sym_hashes;
7314 Elf_Internal_Rela *rel;
7315 Elf_Internal_Rela *relend;
7316 Elf_Internal_Rela outrel;
7318 struct got_entry **local_got_ents;
7320 bfd_boolean ret = TRUE;
7322 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
7323 bfd_boolean is_power4 = FALSE;
7325 if (info->relocatable)
7328 /* Initialize howto table if needed. */
7329 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
7332 htab = ppc_hash_table (info);
7333 local_got_ents = elf_local_got_ents (input_bfd);
7334 TOCstart = elf_gp (output_bfd);
7335 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
7336 sym_hashes = elf_sym_hashes (input_bfd);
7337 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
7340 relend = relocs + input_section->reloc_count;
7341 for (; rel < relend; rel++)
7343 enum elf_ppc64_reloc_type r_type;
7345 bfd_reloc_status_type r;
7346 Elf_Internal_Sym *sym;
7348 struct elf_link_hash_entry *h;
7349 struct elf_link_hash_entry *fdh;
7350 const char *sym_name;
7351 unsigned long r_symndx, toc_symndx;
7352 char tls_mask, tls_gd, tls_type;
7355 bfd_boolean unresolved_reloc;
7357 unsigned long insn, mask;
7358 struct ppc_stub_hash_entry *stub_entry;
7359 bfd_vma max_br_offset;
7362 r_type = ELF64_R_TYPE (rel->r_info);
7363 r_symndx = ELF64_R_SYM (rel->r_info);
7365 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
7366 symbol of the previous ADDR64 reloc. The symbol gives us the
7367 proper TOC base to use. */
7368 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
7370 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
7372 r_symndx = ELF64_R_SYM (rel[-1].r_info);
7378 unresolved_reloc = FALSE;
7381 if (r_symndx < symtab_hdr->sh_info)
7383 /* It's a local symbol. */
7384 sym = local_syms + r_symndx;
7385 sec = local_sections[r_symndx];
7386 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
7387 sym_type = ELF64_ST_TYPE (sym->st_info);
7388 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
7389 if (elf_section_data (sec) != NULL)
7391 long *opd_sym_adjust;
7393 opd_sym_adjust = ppc64_elf_section_data (sec)->opd.adjust;
7394 if (opd_sym_adjust != NULL && sym->st_value % 24 == 0)
7395 relocation += opd_sym_adjust[sym->st_value / 24];
7400 RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx,
7401 symtab_hdr, relocation, sec,
7402 unresolved_reloc, info,
7404 sym_name = h->root.root.string;
7408 /* TLS optimizations. Replace instruction sequences and relocs
7409 based on information we collected in tls_optimize. We edit
7410 RELOCS so that --emit-relocs will output something sensible
7411 for the final instruction stream. */
7415 if (IS_PPC64_TLS_RELOC (r_type))
7418 tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask;
7419 else if (local_got_ents != NULL)
7422 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
7423 tls_mask = lgot_masks[r_symndx];
7425 if (tls_mask == 0 && r_type == R_PPC64_TLS)
7427 /* Check for toc tls entries. */
7430 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7435 tls_mask = *toc_tls;
7439 /* Check that tls relocs are used with tls syms, and non-tls
7440 relocs are used with non-tls syms. */
7442 && r_type != R_PPC64_NONE
7444 || h->root.type == bfd_link_hash_defined
7445 || h->root.type == bfd_link_hash_defweak)
7446 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7448 if (r_type == R_PPC64_TLS && tls_mask != 0)
7449 /* R_PPC64_TLS is OK against a symbol in the TOC. */
7452 (*_bfd_error_handler)
7453 (sym_type == STT_TLS
7454 ? _("%s(%s+0x%lx): %s used with TLS symbol %s")
7455 : _("%s(%s+0x%lx): %s used with non-TLS symbol %s"),
7456 bfd_archive_filename (input_bfd),
7457 input_section->name,
7458 (long) rel->r_offset,
7459 ppc64_elf_howto_table[r_type]->name,
7463 /* Ensure reloc mapping code below stays sane. */
7464 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
7465 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
7466 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
7467 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
7468 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
7469 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
7470 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
7471 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
7472 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
7473 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
7482 case R_PPC64_TOC16_LO:
7483 case R_PPC64_TOC16_DS:
7484 case R_PPC64_TOC16_LO_DS:
7486 /* Check for toc tls entries. */
7490 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7497 tls_mask = *toc_tls;
7498 if (r_type == R_PPC64_TOC16_DS
7499 || r_type == R_PPC64_TOC16_LO_DS)
7502 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
7507 /* If we found a GD reloc pair, then we might be
7508 doing a GD->IE transition. */
7511 tls_gd = TLS_TPRELGD;
7512 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7513 goto tls_get_addr_check;
7515 else if (retval == 3)
7517 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7518 goto tls_get_addr_check;
7525 case R_PPC64_GOT_TPREL16_DS:
7526 case R_PPC64_GOT_TPREL16_LO_DS:
7528 && (tls_mask & TLS_TPREL) == 0)
7531 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
7533 insn |= 0x3c0d0000; /* addis 0,13,0 */
7534 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
7535 r_type = R_PPC64_TPREL16_HA;
7536 if (toc_symndx != 0)
7538 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
7539 /* We changed the symbol. Start over in order to
7540 get h, sym, sec etc. right. */
7545 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7551 && (tls_mask & TLS_TPREL) == 0)
7554 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7555 if ((insn & ((0x3f << 26) | (31 << 11)))
7556 == ((31 << 26) | (13 << 11)))
7557 rtra = insn & ((1 << 26) - (1 << 16));
7558 else if ((insn & ((0x3f << 26) | (31 << 16)))
7559 == ((31 << 26) | (13 << 16)))
7560 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
7563 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
7566 else if ((insn & (31 << 1)) == 23 << 1
7567 && ((insn & (31 << 6)) < 14 << 6
7568 || ((insn & (31 << 6)) >= 16 << 6
7569 && (insn & (31 << 6)) < 24 << 6)))
7570 /* load and store indexed -> dform. */
7571 insn = (32 | ((insn >> 6) & 31)) << 26;
7572 else if ((insn & (31 << 1)) == 21 << 1
7573 && (insn & (0x1a << 6)) == 0)
7574 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7575 insn = (((58 | ((insn >> 6) & 4)) << 26)
7576 | ((insn >> 6) & 1));
7577 else if ((insn & (31 << 1)) == 21 << 1
7578 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
7580 insn = (58 << 26) | 2;
7584 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7585 /* Was PPC64_TLS which sits on insn boundary, now
7586 PPC64_TPREL16_LO which is at insn+2. */
7588 r_type = R_PPC64_TPREL16_LO;
7589 if (toc_symndx != 0)
7591 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
7592 /* We changed the symbol. Start over in order to
7593 get h, sym, sec etc. right. */
7598 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7602 case R_PPC64_GOT_TLSGD16_HI:
7603 case R_PPC64_GOT_TLSGD16_HA:
7604 tls_gd = TLS_TPRELGD;
7605 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7609 case R_PPC64_GOT_TLSLD16_HI:
7610 case R_PPC64_GOT_TLSLD16_HA:
7611 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7614 if ((tls_mask & tls_gd) != 0)
7615 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7616 + R_PPC64_GOT_TPREL16_DS);
7619 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7621 r_type = R_PPC64_NONE;
7623 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7627 case R_PPC64_GOT_TLSGD16:
7628 case R_PPC64_GOT_TLSGD16_LO:
7629 tls_gd = TLS_TPRELGD;
7630 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7631 goto tls_get_addr_check;
7634 case R_PPC64_GOT_TLSLD16:
7635 case R_PPC64_GOT_TLSLD16_LO:
7636 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7639 if (rel + 1 < relend)
7641 enum elf_ppc64_reloc_type r_type2;
7642 unsigned long r_symndx2;
7643 struct elf_link_hash_entry *h2;
7644 bfd_vma insn1, insn2, insn3;
7647 /* The next instruction should be a call to
7648 __tls_get_addr. Peek at the reloc to be sure. */
7649 r_type2 = ELF64_R_TYPE (rel[1].r_info);
7650 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7651 if (r_symndx2 < symtab_hdr->sh_info
7652 || (r_type2 != R_PPC64_REL14
7653 && r_type2 != R_PPC64_REL14_BRTAKEN
7654 && r_type2 != R_PPC64_REL14_BRNTAKEN
7655 && r_type2 != R_PPC64_REL24))
7658 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7659 while (h2->root.type == bfd_link_hash_indirect
7660 || h2->root.type == bfd_link_hash_warning)
7661 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
7662 if (h2 == NULL || h2 != htab->tls_get_addr)
7665 /* OK, it checks out. Replace the call. */
7666 offset = rel[1].r_offset;
7667 insn1 = bfd_get_32 (output_bfd,
7668 contents + rel->r_offset - 2);
7669 insn3 = bfd_get_32 (output_bfd,
7670 contents + offset + 4);
7671 if ((tls_mask & tls_gd) != 0)
7674 insn1 &= (1 << 26) - (1 << 2);
7675 insn1 |= 58 << 26; /* ld */
7676 insn2 = 0x7c636a14; /* add 3,3,13 */
7677 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
7678 if ((tls_mask & TLS_EXPLICIT) == 0)
7679 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7680 + R_PPC64_GOT_TPREL16_DS);
7682 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
7683 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7688 insn1 = 0x3c6d0000; /* addis 3,13,0 */
7689 insn2 = 0x38630000; /* addi 3,3,0 */
7692 /* Was an LD reloc. */
7694 rel->r_addend = htab->tls_sec->vma + DTP_OFFSET;
7695 rel[1].r_addend = htab->tls_sec->vma + DTP_OFFSET;
7697 else if (toc_symndx != 0)
7698 r_symndx = toc_symndx;
7699 r_type = R_PPC64_TPREL16_HA;
7700 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7701 rel[1].r_info = ELF64_R_INFO (r_symndx,
7702 R_PPC64_TPREL16_LO);
7703 rel[1].r_offset += 2;
7706 || insn3 == CROR_151515 || insn3 == CROR_313131)
7710 rel[1].r_offset += 4;
7712 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
7713 bfd_put_32 (output_bfd, insn2, contents + offset);
7714 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
7715 if (tls_gd == 0 || toc_symndx != 0)
7717 /* We changed the symbol. Start over in order
7718 to get h, sym, sec etc. right. */
7726 case R_PPC64_DTPMOD64:
7727 if (rel + 1 < relend
7728 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
7729 && rel[1].r_offset == rel->r_offset + 8)
7731 if ((tls_mask & TLS_GD) == 0)
7733 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
7734 if ((tls_mask & TLS_TPRELGD) != 0)
7735 r_type = R_PPC64_TPREL64;
7738 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
7739 r_type = R_PPC64_NONE;
7741 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7746 if ((tls_mask & TLS_LD) == 0)
7748 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
7749 r_type = R_PPC64_NONE;
7750 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7755 case R_PPC64_TPREL64:
7756 if ((tls_mask & TLS_TPREL) == 0)
7758 r_type = R_PPC64_NONE;
7759 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7764 /* Handle other relocations that tweak non-addend part of insn. */
7771 /* Branch taken prediction relocations. */
7772 case R_PPC64_ADDR14_BRTAKEN:
7773 case R_PPC64_REL14_BRTAKEN:
7774 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
7777 /* Branch not taken prediction relocations. */
7778 case R_PPC64_ADDR14_BRNTAKEN:
7779 case R_PPC64_REL14_BRNTAKEN:
7780 insn |= bfd_get_32 (output_bfd,
7781 contents + rel->r_offset) & ~(0x01 << 21);
7784 /* Set 'a' bit. This is 0b00010 in BO field for branch
7785 on CR(BI) insns (BO == 001at or 011at), and 0b01000
7786 for branch on CTR insns (BO == 1a00t or 1a01t). */
7787 if ((insn & (0x14 << 21)) == (0x04 << 21))
7789 else if ((insn & (0x14 << 21)) == (0x10 << 21))
7796 from = (rel->r_offset
7797 + input_section->output_offset
7798 + input_section->output_section->vma);
7800 /* Invert 'y' bit if not the default. */
7801 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7805 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7809 /* Calls to functions with a different TOC, such as calls to
7810 shared objects, need to alter the TOC pointer. This is
7811 done using a linkage stub. A REL24 branching to these
7812 linkage stubs needs to be followed by a nop, as the nop
7813 will be replaced with an instruction to restore the TOC
7816 && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
7817 && fdh->plt.plist != NULL)
7818 || ((fdh = h, sec) != NULL
7819 && sec->output_section != NULL
7820 && (htab->stub_group[sec->id].toc_off
7821 != htab->stub_group[input_section->id].toc_off)))
7822 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
7824 && (stub_entry->stub_type == ppc_stub_plt_call
7825 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
7826 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
7828 bfd_boolean can_plt_call = 0;
7830 if (rel->r_offset + 8 <= input_section->_cooked_size)
7832 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
7834 || insn == CROR_151515 || insn == CROR_313131)
7836 bfd_put_32 (input_bfd, LD_R2_40R1,
7837 contents + rel->r_offset + 4);
7844 if (stub_entry->stub_type == ppc_stub_plt_call)
7846 /* If this is a plain branch rather than a branch
7847 and link, don't require a nop. */
7848 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7849 if ((insn & 1) == 0)
7853 && strcmp (h->root.root.string,
7854 ".__libc_start_main") == 0)
7856 /* Allow crt1 branch to go via a toc adjusting stub. */
7861 if (strcmp (input_section->output_section->name,
7863 || strcmp (input_section->output_section->name,
7865 (*_bfd_error_handler)
7866 (_("%s(%s+0x%lx): automatic multiple TOCs "
7867 "not supported using your crt files; "
7868 "recompile with -mminimal-toc or upgrade gcc"),
7869 bfd_archive_filename (input_bfd),
7870 input_section->name,
7871 (long) rel->r_offset);
7873 (*_bfd_error_handler)
7874 (_("%s(%s+0x%lx): sibling call optimization to `%s' "
7875 "does not allow automatic multiple TOCs; "
7876 "recompile with -mminimal-toc or "
7877 "-fno-optimize-sibling-calls, "
7878 "or make `%s' extern"),
7879 bfd_archive_filename (input_bfd),
7880 input_section->name,
7881 (long) rel->r_offset,
7884 bfd_set_error (bfd_error_bad_value);
7891 relocation = (stub_entry->stub_offset
7892 + stub_entry->stub_sec->output_offset
7893 + stub_entry->stub_sec->output_section->vma);
7894 if (stub_entry->stub_type == ppc_stub_plt_call)
7895 unresolved_reloc = FALSE;
7900 && h->root.type == bfd_link_hash_undefweak
7902 && rel->r_addend == 0)
7904 /* Tweak calls to undefined weak functions to point at a
7905 blr. We can thus call a weak function without first
7906 checking whether the function is defined. We have a
7907 blr at the end of .sfpr. */
7908 BFD_ASSERT (htab->sfpr->_raw_size != 0);
7909 relocation = (htab->sfpr->_raw_size - 4
7910 + htab->sfpr->output_offset
7911 + htab->sfpr->output_section->vma);
7912 from = (rel->r_offset
7913 + input_section->output_offset
7914 + input_section->output_section->vma);
7916 /* But let's not be silly about it. If the blr isn't in
7917 reach, just go to the next instruction. */
7918 if (relocation - from + (1 << 25) >= (1 << 26)
7919 || htab->sfpr->_raw_size == 0)
7920 relocation = from + 4;
7927 addend = rel->r_addend;
7931 (*_bfd_error_handler)
7932 (_("%s: unknown relocation type %d for symbol %s"),
7933 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
7935 bfd_set_error (bfd_error_bad_value);
7941 case R_PPC64_GNU_VTINHERIT:
7942 case R_PPC64_GNU_VTENTRY:
7945 /* GOT16 relocations. Like an ADDR16 using the symbol's
7946 address in the GOT as relocation value instead of the
7947 symbol's value itself. Also, create a GOT entry for the
7948 symbol and put the symbol value there. */
7949 case R_PPC64_GOT_TLSGD16:
7950 case R_PPC64_GOT_TLSGD16_LO:
7951 case R_PPC64_GOT_TLSGD16_HI:
7952 case R_PPC64_GOT_TLSGD16_HA:
7953 tls_type = TLS_TLS | TLS_GD;
7956 case R_PPC64_GOT_TLSLD16:
7957 case R_PPC64_GOT_TLSLD16_LO:
7958 case R_PPC64_GOT_TLSLD16_HI:
7959 case R_PPC64_GOT_TLSLD16_HA:
7960 tls_type = TLS_TLS | TLS_LD;
7963 case R_PPC64_GOT_TPREL16_DS:
7964 case R_PPC64_GOT_TPREL16_LO_DS:
7965 case R_PPC64_GOT_TPREL16_HI:
7966 case R_PPC64_GOT_TPREL16_HA:
7967 tls_type = TLS_TLS | TLS_TPREL;
7970 case R_PPC64_GOT_DTPREL16_DS:
7971 case R_PPC64_GOT_DTPREL16_LO_DS:
7972 case R_PPC64_GOT_DTPREL16_HI:
7973 case R_PPC64_GOT_DTPREL16_HA:
7974 tls_type = TLS_TLS | TLS_DTPREL;
7978 case R_PPC64_GOT16_LO:
7979 case R_PPC64_GOT16_HI:
7980 case R_PPC64_GOT16_HA:
7981 case R_PPC64_GOT16_DS:
7982 case R_PPC64_GOT16_LO_DS:
7985 /* Relocation is to the entry for this symbol in the global
7990 unsigned long indx = 0;
7992 if (tls_type == (TLS_TLS | TLS_LD)
7994 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
7995 offp = &ppc64_tlsld_got (input_bfd)->offset;
7998 struct got_entry *ent;
8002 bfd_boolean dyn = htab->elf.dynamic_sections_created;
8003 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8005 && SYMBOL_REFERENCES_LOCAL (info, h)))
8006 /* This is actually a static link, or it is a
8007 -Bsymbolic link and the symbol is defined
8008 locally, or the symbol was forced to be local
8009 because of a version file. */
8014 unresolved_reloc = FALSE;
8020 if (local_got_ents == NULL)
8022 ent = local_got_ents[r_symndx];
8025 for (; ent != NULL; ent = ent->next)
8026 if (ent->addend == rel->r_addend
8027 && ent->owner == input_bfd
8028 && ent->tls_type == tls_type)
8032 offp = &ent->got.offset;
8035 got = ppc64_elf_tdata (input_bfd)->got;
8039 /* The offset must always be a multiple of 8. We use the
8040 least significant bit to record whether we have already
8041 processed this entry. */
8047 /* Generate relocs for the dynamic linker, except in
8048 the case of TLSLD where we'll use one entry per
8050 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
8053 if ((info->shared || indx != 0)
8055 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8056 || h->root.type != bfd_link_hash_undefweak))
8058 outrel.r_offset = (got->output_section->vma
8059 + got->output_offset
8061 outrel.r_addend = rel->r_addend;
8062 if (tls_type & (TLS_LD | TLS_GD))
8064 outrel.r_addend = 0;
8065 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
8066 if (tls_type == (TLS_TLS | TLS_GD))
8068 loc = relgot->contents;
8069 loc += (relgot->reloc_count++
8070 * sizeof (Elf64_External_Rela));
8071 bfd_elf64_swap_reloca_out (output_bfd,
8073 outrel.r_offset += 8;
8074 outrel.r_addend = rel->r_addend;
8076 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
8079 else if (tls_type == (TLS_TLS | TLS_DTPREL))
8080 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
8081 else if (tls_type == (TLS_TLS | TLS_TPREL))
8082 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
8085 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
8087 /* Write the .got section contents for the sake
8089 loc = got->contents + off;
8090 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
8094 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
8096 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
8098 outrel.r_addend += relocation;
8099 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8100 outrel.r_addend -= htab->tls_sec->vma;
8102 loc = relgot->contents;
8103 loc += (relgot->reloc_count++
8104 * sizeof (Elf64_External_Rela));
8105 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8108 /* Init the .got section contents here if we're not
8109 emitting a reloc. */
8112 relocation += rel->r_addend;
8113 if (tls_type == (TLS_TLS | TLS_LD))
8115 else if (tls_type != 0)
8117 relocation -= htab->tls_sec->vma + DTP_OFFSET;
8118 if (tls_type == (TLS_TLS | TLS_TPREL))
8119 relocation += DTP_OFFSET - TP_OFFSET;
8121 if (tls_type == (TLS_TLS | TLS_GD))
8123 bfd_put_64 (output_bfd, relocation,
8124 got->contents + off + 8);
8129 bfd_put_64 (output_bfd, relocation,
8130 got->contents + off);
8134 if (off >= (bfd_vma) -2)
8137 relocation = got->output_offset + off;
8139 /* TOC base (r2) is TOC start plus 0x8000. */
8140 addend = -TOC_BASE_OFF;
8144 case R_PPC64_PLT16_HA:
8145 case R_PPC64_PLT16_HI:
8146 case R_PPC64_PLT16_LO:
8149 /* Relocation is to the entry for this symbol in the
8150 procedure linkage table. */
8152 /* Resolve a PLT reloc against a local symbol directly,
8153 without using the procedure linkage table. */
8157 /* It's possible that we didn't make a PLT entry for this
8158 symbol. This happens when statically linking PIC code,
8159 or when using -Bsymbolic. Go find a match if there is a
8161 if (htab->plt != NULL)
8163 struct plt_entry *ent;
8164 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8165 if (ent->addend == rel->r_addend
8166 && ent->plt.offset != (bfd_vma) -1)
8168 relocation = (htab->plt->output_section->vma
8169 + htab->plt->output_offset
8171 unresolved_reloc = FALSE;
8177 /* Relocation value is TOC base. */
8178 relocation = TOCstart;
8180 relocation += htab->stub_group[input_section->id].toc_off;
8181 else if (sec != NULL && !unresolved_reloc)
8182 relocation += htab->stub_group[sec->id].toc_off;
8184 unresolved_reloc = TRUE;
8187 /* TOC16 relocs. We want the offset relative to the TOC base,
8188 which is the address of the start of the TOC plus 0x8000.
8189 The TOC consists of sections .got, .toc, .tocbss, and .plt,
8192 case R_PPC64_TOC16_LO:
8193 case R_PPC64_TOC16_HI:
8194 case R_PPC64_TOC16_DS:
8195 case R_PPC64_TOC16_LO_DS:
8196 case R_PPC64_TOC16_HA:
8197 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
8200 /* Relocate against the beginning of the section. */
8201 case R_PPC64_SECTOFF:
8202 case R_PPC64_SECTOFF_LO:
8203 case R_PPC64_SECTOFF_HI:
8204 case R_PPC64_SECTOFF_DS:
8205 case R_PPC64_SECTOFF_LO_DS:
8206 case R_PPC64_SECTOFF_HA:
8208 addend -= sec->output_section->vma;
8212 case R_PPC64_REL14_BRNTAKEN:
8213 case R_PPC64_REL14_BRTAKEN:
8217 case R_PPC64_TPREL16:
8218 case R_PPC64_TPREL16_LO:
8219 case R_PPC64_TPREL16_HI:
8220 case R_PPC64_TPREL16_HA:
8221 case R_PPC64_TPREL16_DS:
8222 case R_PPC64_TPREL16_LO_DS:
8223 case R_PPC64_TPREL16_HIGHER:
8224 case R_PPC64_TPREL16_HIGHERA:
8225 case R_PPC64_TPREL16_HIGHEST:
8226 case R_PPC64_TPREL16_HIGHESTA:
8227 addend -= htab->tls_sec->vma + TP_OFFSET;
8229 /* The TPREL16 relocs shouldn't really be used in shared
8230 libs as they will result in DT_TEXTREL being set, but
8231 support them anyway. */
8235 case R_PPC64_DTPREL16:
8236 case R_PPC64_DTPREL16_LO:
8237 case R_PPC64_DTPREL16_HI:
8238 case R_PPC64_DTPREL16_HA:
8239 case R_PPC64_DTPREL16_DS:
8240 case R_PPC64_DTPREL16_LO_DS:
8241 case R_PPC64_DTPREL16_HIGHER:
8242 case R_PPC64_DTPREL16_HIGHERA:
8243 case R_PPC64_DTPREL16_HIGHEST:
8244 case R_PPC64_DTPREL16_HIGHESTA:
8245 addend -= htab->tls_sec->vma + DTP_OFFSET;
8248 case R_PPC64_DTPMOD64:
8253 case R_PPC64_TPREL64:
8254 addend -= htab->tls_sec->vma + TP_OFFSET;
8257 case R_PPC64_DTPREL64:
8258 addend -= htab->tls_sec->vma + DTP_OFFSET;
8261 /* Relocations that may need to be propagated if this is a
8266 case R_PPC64_ADDR14:
8267 case R_PPC64_ADDR14_BRNTAKEN:
8268 case R_PPC64_ADDR14_BRTAKEN:
8269 case R_PPC64_ADDR16:
8270 case R_PPC64_ADDR16_DS:
8271 case R_PPC64_ADDR16_HA:
8272 case R_PPC64_ADDR16_HI:
8273 case R_PPC64_ADDR16_HIGHER:
8274 case R_PPC64_ADDR16_HIGHERA:
8275 case R_PPC64_ADDR16_HIGHEST:
8276 case R_PPC64_ADDR16_HIGHESTA:
8277 case R_PPC64_ADDR16_LO:
8278 case R_PPC64_ADDR16_LO_DS:
8279 case R_PPC64_ADDR24:
8280 case R_PPC64_ADDR32:
8281 case R_PPC64_ADDR64:
8282 case R_PPC64_UADDR16:
8283 case R_PPC64_UADDR32:
8284 case R_PPC64_UADDR64:
8285 /* r_symndx will be zero only for relocs against symbols
8286 from removed linkonce sections, or sections discarded by
8294 if ((input_section->flags & SEC_ALLOC) == 0)
8297 if (NO_OPD_RELOCS && is_opd)
8302 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8303 || h->root.type != bfd_link_hash_undefweak)
8304 && (MUST_BE_DYN_RELOC (r_type)
8305 || !SYMBOL_CALLS_LOCAL (info, h)))
8306 || (ELIMINATE_COPY_RELOCS
8310 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
8311 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
8312 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
8314 Elf_Internal_Rela outrel;
8315 bfd_boolean skip, relocate;
8320 /* When generating a dynamic object, these relocations
8321 are copied into the output file to be resolved at run
8327 out_off = _bfd_elf_section_offset (output_bfd, info,
8328 input_section, rel->r_offset);
8329 if (out_off == (bfd_vma) -1)
8331 else if (out_off == (bfd_vma) -2)
8332 skip = TRUE, relocate = TRUE;
8333 out_off += (input_section->output_section->vma
8334 + input_section->output_offset);
8335 outrel.r_offset = out_off;
8336 outrel.r_addend = rel->r_addend;
8338 /* Optimize unaligned reloc use. */
8339 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
8340 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
8341 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
8342 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
8343 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
8344 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
8345 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
8346 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
8347 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
8350 memset (&outrel, 0, sizeof outrel);
8351 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
8353 && r_type != R_PPC64_TOC)
8354 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
8357 /* This symbol is local, or marked to become local,
8358 or this is an opd section reloc which must point
8359 at a local function. */
8360 outrel.r_addend += relocation;
8361 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
8363 if (is_opd && h != NULL)
8365 /* Lie about opd entries. This case occurs
8366 when building shared libraries and we
8367 reference a function in another shared
8368 lib. The same thing happens for a weak
8369 definition in an application that's
8370 overridden by a strong definition in a
8371 shared lib. (I believe this is a generic
8372 bug in binutils handling of weak syms.)
8373 In these cases we won't use the opd
8374 entry in this lib. */
8375 unresolved_reloc = FALSE;
8377 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8379 /* We need to relocate .opd contents for ld.so.
8380 Prelink also wants simple and consistent rules
8381 for relocs. This make all RELATIVE relocs have
8382 *r_offset equal to r_addend. */
8389 if (bfd_is_abs_section (sec))
8391 else if (sec == NULL || sec->owner == NULL)
8393 bfd_set_error (bfd_error_bad_value);
8400 osec = sec->output_section;
8401 indx = elf_section_data (osec)->dynindx;
8403 /* We are turning this relocation into one
8404 against a section symbol, so subtract out
8405 the output section's address but not the
8406 offset of the input section in the output
8408 outrel.r_addend -= osec->vma;
8411 outrel.r_info = ELF64_R_INFO (indx, r_type);
8415 sreloc = elf_section_data (input_section)->sreloc;
8419 loc = sreloc->contents;
8420 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
8421 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8423 /* If this reloc is against an external symbol, it will
8424 be computed at runtime, so there's no need to do
8425 anything now. However, for the sake of prelink ensure
8426 that the section contents are a known value. */
8429 unresolved_reloc = FALSE;
8430 /* The value chosen here is quite arbitrary as ld.so
8431 ignores section contents except for the special
8432 case of .opd where the contents might be accessed
8433 before relocation. Choose zero, as that won't
8434 cause reloc overflow. */
8437 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
8438 to improve backward compatibility with older
8440 if (r_type == R_PPC64_ADDR64)
8441 addend = outrel.r_addend;
8442 /* Adjust pc_relative relocs to have zero in *r_offset. */
8443 else if (ppc64_elf_howto_table[r_type]->pc_relative)
8444 addend = (input_section->output_section->vma
8445 + input_section->output_offset
8452 case R_PPC64_GLOB_DAT:
8453 case R_PPC64_JMP_SLOT:
8454 case R_PPC64_RELATIVE:
8455 /* We shouldn't ever see these dynamic relocs in relocatable
8459 case R_PPC64_PLTGOT16:
8460 case R_PPC64_PLTGOT16_DS:
8461 case R_PPC64_PLTGOT16_HA:
8462 case R_PPC64_PLTGOT16_HI:
8463 case R_PPC64_PLTGOT16_LO:
8464 case R_PPC64_PLTGOT16_LO_DS:
8465 case R_PPC64_PLTREL32:
8466 case R_PPC64_PLTREL64:
8467 /* These ones haven't been implemented yet. */
8469 (*_bfd_error_handler)
8470 (_("%s: relocation %s is not supported for symbol %s."),
8471 bfd_archive_filename (input_bfd),
8472 ppc64_elf_howto_table[r_type]->name, sym_name);
8474 bfd_set_error (bfd_error_invalid_operation);
8479 /* Do any further special processing. */
8485 case R_PPC64_ADDR16_HA:
8486 case R_PPC64_ADDR16_HIGHERA:
8487 case R_PPC64_ADDR16_HIGHESTA:
8488 case R_PPC64_GOT16_HA:
8489 case R_PPC64_PLTGOT16_HA:
8490 case R_PPC64_PLT16_HA:
8491 case R_PPC64_TOC16_HA:
8492 case R_PPC64_SECTOFF_HA:
8493 case R_PPC64_TPREL16_HA:
8494 case R_PPC64_DTPREL16_HA:
8495 case R_PPC64_GOT_TLSGD16_HA:
8496 case R_PPC64_GOT_TLSLD16_HA:
8497 case R_PPC64_GOT_TPREL16_HA:
8498 case R_PPC64_GOT_DTPREL16_HA:
8499 case R_PPC64_TPREL16_HIGHER:
8500 case R_PPC64_TPREL16_HIGHERA:
8501 case R_PPC64_TPREL16_HIGHEST:
8502 case R_PPC64_TPREL16_HIGHESTA:
8503 case R_PPC64_DTPREL16_HIGHER:
8504 case R_PPC64_DTPREL16_HIGHERA:
8505 case R_PPC64_DTPREL16_HIGHEST:
8506 case R_PPC64_DTPREL16_HIGHESTA:
8507 /* It's just possible that this symbol is a weak symbol
8508 that's not actually defined anywhere. In that case,
8509 'sec' would be NULL, and we should leave the symbol
8510 alone (it will be set to zero elsewhere in the link). */
8512 /* Add 0x10000 if sign bit in 0:15 is set.
8513 Bits 0:15 are not used. */
8517 case R_PPC64_ADDR16_DS:
8518 case R_PPC64_ADDR16_LO_DS:
8519 case R_PPC64_GOT16_DS:
8520 case R_PPC64_GOT16_LO_DS:
8521 case R_PPC64_PLT16_LO_DS:
8522 case R_PPC64_SECTOFF_DS:
8523 case R_PPC64_SECTOFF_LO_DS:
8524 case R_PPC64_TOC16_DS:
8525 case R_PPC64_TOC16_LO_DS:
8526 case R_PPC64_PLTGOT16_DS:
8527 case R_PPC64_PLTGOT16_LO_DS:
8528 case R_PPC64_GOT_TPREL16_DS:
8529 case R_PPC64_GOT_TPREL16_LO_DS:
8530 case R_PPC64_GOT_DTPREL16_DS:
8531 case R_PPC64_GOT_DTPREL16_LO_DS:
8532 case R_PPC64_TPREL16_DS:
8533 case R_PPC64_TPREL16_LO_DS:
8534 case R_PPC64_DTPREL16_DS:
8535 case R_PPC64_DTPREL16_LO_DS:
8536 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
8538 /* If this reloc is against an lq insn, then the value must be
8539 a multiple of 16. This is somewhat of a hack, but the
8540 "correct" way to do this by defining _DQ forms of all the
8541 _DS relocs bloats all reloc switches in this file. It
8542 doesn't seem to make much sense to use any of these relocs
8543 in data, so testing the insn should be safe. */
8544 if ((insn & (0x3f << 26)) == (56u << 26))
8546 if (((relocation + addend) & mask) != 0)
8548 (*_bfd_error_handler)
8549 (_("%s: error: relocation %s not a multiple of %d"),
8550 bfd_archive_filename (input_bfd),
8551 ppc64_elf_howto_table[r_type]->name,
8553 bfd_set_error (bfd_error_bad_value);
8560 case R_PPC64_REL14_BRNTAKEN:
8561 case R_PPC64_REL14_BRTAKEN:
8562 max_br_offset = 1 << 15;
8566 max_br_offset = 1 << 25;
8569 /* If the branch is out of reach or the TOC register needs
8570 adjusting, then redirect the call to the local stub for
8572 from = (rel->r_offset
8573 + input_section->output_offset
8574 + input_section->output_section->vma);
8575 if ((relocation + addend - from + max_br_offset >= 2 * max_br_offset
8577 && sec->output_section != NULL
8578 && sec->id <= htab->top_id
8579 && (htab->stub_group[sec->id].toc_off
8580 != htab->stub_group[input_section->id].toc_off)))
8581 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
8582 rel, htab)) != NULL)
8584 /* Munge up the value and addend so that we call the stub
8585 rather than the procedure directly. */
8586 relocation = (stub_entry->stub_offset
8587 + stub_entry->stub_sec->output_offset
8588 + stub_entry->stub_sec->output_section->vma);
8594 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8595 because such sections are not SEC_ALLOC and thus ld.so will
8596 not process them. */
8597 if (unresolved_reloc
8598 && !((input_section->flags & SEC_DEBUGGING) != 0
8599 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
8601 (*_bfd_error_handler)
8602 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
8603 bfd_archive_filename (input_bfd),
8604 bfd_get_section_name (input_bfd, input_section),
8605 (long) rel->r_offset,
8606 ppc64_elf_howto_table[(int) r_type]->name,
8607 h->root.root.string);
8611 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
8619 if (r != bfd_reloc_ok)
8621 if (sym_name == NULL)
8622 sym_name = "(null)";
8623 if (r == bfd_reloc_overflow)
8628 && h->root.type == bfd_link_hash_undefweak
8629 && ppc64_elf_howto_table[r_type]->pc_relative)
8631 /* Assume this is a call protected by other code that
8632 detects the symbol is undefined. If this is the case,
8633 we can safely ignore the overflow. If not, the
8634 program is hosed anyway, and a little warning isn't
8640 if (!((*info->callbacks->reloc_overflow)
8641 (info, sym_name, ppc64_elf_howto_table[r_type]->name,
8642 rel->r_addend, input_bfd, input_section, rel->r_offset)))
8647 (*_bfd_error_handler)
8648 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
8649 bfd_archive_filename (input_bfd),
8650 bfd_get_section_name (input_bfd, input_section),
8651 (long) rel->r_offset,
8652 ppc64_elf_howto_table[r_type]->name,
8663 /* Finish up dynamic symbol handling. We set the contents of various
8664 dynamic sections here. */
8667 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
8668 struct bfd_link_info *info,
8669 struct elf_link_hash_entry *h,
8670 Elf_Internal_Sym *sym)
8672 struct ppc_link_hash_table *htab;
8675 htab = ppc_hash_table (info);
8676 dynobj = htab->elf.dynobj;
8678 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
8680 struct plt_entry *ent;
8681 Elf_Internal_Rela rela;
8684 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8685 if (ent->plt.offset != (bfd_vma) -1)
8687 /* This symbol has an entry in the procedure linkage
8688 table. Set it up. */
8690 if (htab->plt == NULL
8691 || htab->relplt == NULL
8692 || htab->glink == NULL)
8695 /* Create a JMP_SLOT reloc to inform the dynamic linker to
8696 fill in the PLT entry. */
8697 rela.r_offset = (htab->plt->output_section->vma
8698 + htab->plt->output_offset
8700 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
8701 rela.r_addend = ent->addend;
8703 loc = htab->relplt->contents;
8704 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
8705 * sizeof (Elf64_External_Rela));
8706 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8710 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
8712 Elf_Internal_Rela rela;
8715 /* This symbol needs a copy reloc. Set it up. */
8717 if (h->dynindx == -1
8718 || (h->root.type != bfd_link_hash_defined
8719 && h->root.type != bfd_link_hash_defweak)
8720 || htab->relbss == NULL)
8723 rela.r_offset = (h->root.u.def.value
8724 + h->root.u.def.section->output_section->vma
8725 + h->root.u.def.section->output_offset);
8726 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
8728 loc = htab->relbss->contents;
8729 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
8730 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8733 /* Mark some specially defined symbols as absolute. */
8734 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
8735 sym->st_shndx = SHN_ABS;
8740 /* Used to decide how to sort relocs in an optimal manner for the
8741 dynamic linker, before writing them out. */
8743 static enum elf_reloc_type_class
8744 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8746 enum elf_ppc64_reloc_type r_type;
8748 r_type = ELF64_R_TYPE (rela->r_info);
8751 case R_PPC64_RELATIVE:
8752 return reloc_class_relative;
8753 case R_PPC64_JMP_SLOT:
8754 return reloc_class_plt;
8756 return reloc_class_copy;
8758 return reloc_class_normal;
8762 /* Finish up the dynamic sections. */
8765 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
8766 struct bfd_link_info *info)
8768 struct ppc_link_hash_table *htab;
8772 htab = ppc_hash_table (info);
8773 dynobj = htab->elf.dynobj;
8774 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8776 if (htab->elf.dynamic_sections_created)
8778 Elf64_External_Dyn *dyncon, *dynconend;
8780 if (sdyn == NULL || htab->got == NULL)
8783 dyncon = (Elf64_External_Dyn *) sdyn->contents;
8784 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
8785 for (; dyncon < dynconend; dyncon++)
8787 Elf_Internal_Dyn dyn;
8790 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
8797 case DT_PPC64_GLINK:
8799 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8800 /* We stupidly defined DT_PPC64_GLINK to be the start
8801 of glink rather than the first entry point, which is
8802 what ld.so needs, and now have a bigger stub to
8803 support automatic multiple TOCs. */
8804 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
8808 s = bfd_get_section_by_name (output_bfd, ".opd");
8811 dyn.d_un.d_ptr = s->vma;
8814 case DT_PPC64_OPDSZ:
8815 s = bfd_get_section_by_name (output_bfd, ".opd");
8818 dyn.d_un.d_val = s->_raw_size;
8823 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8828 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8832 dyn.d_un.d_val = htab->relplt->_raw_size;
8836 /* Don't count procedure linkage table relocs in the
8837 overall reloc count. */
8841 dyn.d_un.d_val -= s->_raw_size;
8845 /* We may not be using the standard ELF linker script.
8846 If .rela.plt is the first .rela section, we adjust
8847 DT_RELA to not include it. */
8851 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
8853 dyn.d_un.d_ptr += s->_raw_size;
8857 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
8861 if (htab->got != NULL && htab->got->_raw_size != 0)
8863 /* Fill in the first entry in the global offset table.
8864 We use it to hold the link-time TOCbase. */
8865 bfd_put_64 (output_bfd,
8866 elf_gp (output_bfd) + TOC_BASE_OFF,
8867 htab->got->contents);
8869 /* Set .got entry size. */
8870 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
8873 if (htab->plt != NULL && htab->plt->_raw_size != 0)
8875 /* Set .plt entry size. */
8876 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
8880 /* We need to handle writing out multiple GOT sections ourselves,
8881 since we didn't add them to DYNOBJ. */
8882 while ((dynobj = dynobj->link_next) != NULL)
8885 s = ppc64_elf_tdata (dynobj)->got;
8887 && s->_raw_size != 0
8888 && s->output_section != bfd_abs_section_ptr
8889 && !bfd_set_section_contents (output_bfd, s->output_section,
8890 s->contents, s->output_offset,
8893 s = ppc64_elf_tdata (dynobj)->relgot;
8895 && s->_raw_size != 0
8896 && s->output_section != bfd_abs_section_ptr
8897 && !bfd_set_section_contents (output_bfd, s->output_section,
8898 s->contents, s->output_offset,
8906 #include "elf64-target.h"