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.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* The 64-bit PowerPC ELF ABI may be found at
23 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
24 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_create_dynamic_sections ppc64_elf_create_dynamic_sections
82 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
83 #define elf_backend_check_relocs ppc64_elf_check_relocs
84 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
85 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
86 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
87 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
88 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
89 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
90 #define elf_backend_relocate_section ppc64_elf_relocate_section
91 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
92 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
93 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
94 #define elf_backend_special_sections ppc64_elf_special_sections
96 /* The name of the dynamic interpreter. This is put in the .interp
98 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
100 /* The size in bytes of an entry in the procedure linkage table. */
101 #define PLT_ENTRY_SIZE 24
103 /* The initial size of the plt reserved for the dynamic linker. */
104 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
106 /* TOC base pointers offset from start of TOC. */
107 #define TOC_BASE_OFF 0x8000
109 /* Offset of tp and dtp pointers from start of TLS block. */
110 #define TP_OFFSET 0x7000
111 #define DTP_OFFSET 0x8000
113 /* .plt call stub instructions. The normal stub is like this, but
114 sometimes the .plt entry crosses a 64k boundary and we need to
115 insert an addis to adjust r12. */
116 #define PLT_CALL_STUB_SIZE (7*4)
117 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
118 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
119 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
120 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
121 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
122 /* ld %r11,xxx+16@l(%r12) */
123 #define BCTR 0x4e800420 /* bctr */
126 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
127 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
129 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
131 /* glink call stub instructions. We enter with the index in R0, and the
132 address of glink entry in CTR. From that, we can calculate PLT0. */
133 #define GLINK_CALL_STUB_SIZE (16*4)
134 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
135 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
136 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
137 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
138 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
139 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
140 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
141 /* sub %r12,%r12,%r11 */
142 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
143 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
144 /* ld %r11,xxx@l(%r12) */
145 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
148 /* ld %r11,16(%r12) */
152 #define NOP 0x60000000
154 /* Some other nops. */
155 #define CROR_151515 0x4def7b82
156 #define CROR_313131 0x4ffffb82
158 /* .glink entries for the first 32k functions are two instructions. */
159 #define LI_R0_0 0x38000000 /* li %r0,0 */
160 #define B_DOT 0x48000000 /* b . */
162 /* After that, we need two instructions to load the index, followed by
164 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
165 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
167 /* Instructions to save and restore floating point regs. */
168 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
169 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
170 #define BLR 0x4e800020 /* blr */
172 /* Since .opd is an array of descriptors and each entry will end up
173 with identical R_PPC64_RELATIVE relocs, there is really no need to
174 propagate .opd relocs; The dynamic linker should be taught to
175 relocate .opd without reloc entries. */
176 #ifndef NO_OPD_RELOCS
177 #define NO_OPD_RELOCS 0
180 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
182 /* Relocation HOWTO's. */
183 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
185 static reloc_howto_type ppc64_elf_howto_raw
[] = {
186 /* This reloc does nothing. */
187 HOWTO (R_PPC64_NONE
, /* type */
189 2, /* size (0 = byte, 1 = short, 2 = long) */
191 FALSE
, /* pc_relative */
193 complain_overflow_dont
, /* complain_on_overflow */
194 bfd_elf_generic_reloc
, /* special_function */
195 "R_PPC64_NONE", /* name */
196 FALSE
, /* partial_inplace */
199 FALSE
), /* pcrel_offset */
201 /* A standard 32 bit relocation. */
202 HOWTO (R_PPC64_ADDR32
, /* type */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
206 FALSE
, /* pc_relative */
208 complain_overflow_bitfield
, /* complain_on_overflow */
209 bfd_elf_generic_reloc
, /* special_function */
210 "R_PPC64_ADDR32", /* name */
211 FALSE
, /* partial_inplace */
213 0xffffffff, /* dst_mask */
214 FALSE
), /* pcrel_offset */
216 /* An absolute 26 bit branch; the lower two bits must be zero.
217 FIXME: we don't check that, we just clear them. */
218 HOWTO (R_PPC64_ADDR24
, /* type */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
222 FALSE
, /* pc_relative */
224 complain_overflow_bitfield
, /* complain_on_overflow */
225 bfd_elf_generic_reloc
, /* special_function */
226 "R_PPC64_ADDR24", /* name */
227 FALSE
, /* partial_inplace */
229 0x03fffffc, /* dst_mask */
230 FALSE
), /* pcrel_offset */
232 /* A standard 16 bit relocation. */
233 HOWTO (R_PPC64_ADDR16
, /* type */
235 1, /* size (0 = byte, 1 = short, 2 = long) */
237 FALSE
, /* pc_relative */
239 complain_overflow_bitfield
, /* complain_on_overflow */
240 bfd_elf_generic_reloc
, /* special_function */
241 "R_PPC64_ADDR16", /* name */
242 FALSE
, /* partial_inplace */
244 0xffff, /* dst_mask */
245 FALSE
), /* pcrel_offset */
247 /* A 16 bit relocation without overflow. */
248 HOWTO (R_PPC64_ADDR16_LO
, /* type */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
252 FALSE
, /* pc_relative */
254 complain_overflow_dont
,/* complain_on_overflow */
255 bfd_elf_generic_reloc
, /* special_function */
256 "R_PPC64_ADDR16_LO", /* name */
257 FALSE
, /* partial_inplace */
259 0xffff, /* dst_mask */
260 FALSE
), /* pcrel_offset */
262 /* Bits 16-31 of an address. */
263 HOWTO (R_PPC64_ADDR16_HI
, /* type */
265 1, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE
, /* pc_relative */
269 complain_overflow_dont
, /* complain_on_overflow */
270 bfd_elf_generic_reloc
, /* special_function */
271 "R_PPC64_ADDR16_HI", /* name */
272 FALSE
, /* partial_inplace */
274 0xffff, /* dst_mask */
275 FALSE
), /* pcrel_offset */
277 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
278 bits, treated as a signed number, is negative. */
279 HOWTO (R_PPC64_ADDR16_HA
, /* type */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
283 FALSE
, /* pc_relative */
285 complain_overflow_dont
, /* complain_on_overflow */
286 ppc64_elf_ha_reloc
, /* special_function */
287 "R_PPC64_ADDR16_HA", /* name */
288 FALSE
, /* partial_inplace */
290 0xffff, /* dst_mask */
291 FALSE
), /* pcrel_offset */
293 /* An absolute 16 bit branch; the lower two bits must be zero.
294 FIXME: we don't check that, we just clear them. */
295 HOWTO (R_PPC64_ADDR14
, /* type */
297 2, /* size (0 = byte, 1 = short, 2 = long) */
299 FALSE
, /* pc_relative */
301 complain_overflow_bitfield
, /* complain_on_overflow */
302 bfd_elf_generic_reloc
, /* special_function */
303 "R_PPC64_ADDR14", /* name */
304 FALSE
, /* partial_inplace */
306 0x0000fffc, /* dst_mask */
307 FALSE
), /* pcrel_offset */
309 /* An absolute 16 bit branch, for which bit 10 should be set to
310 indicate that the branch is expected to be taken. The lower two
311 bits must be zero. */
312 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
316 FALSE
, /* pc_relative */
318 complain_overflow_bitfield
, /* complain_on_overflow */
319 ppc64_elf_brtaken_reloc
, /* special_function */
320 "R_PPC64_ADDR14_BRTAKEN",/* name */
321 FALSE
, /* partial_inplace */
323 0x0000fffc, /* dst_mask */
324 FALSE
), /* pcrel_offset */
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is not expected to be taken. The lower
328 two bits must be zero. */
329 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE
, /* pc_relative */
335 complain_overflow_bitfield
, /* complain_on_overflow */
336 ppc64_elf_brtaken_reloc
, /* special_function */
337 "R_PPC64_ADDR14_BRNTAKEN",/* name */
338 FALSE
, /* partial_inplace */
340 0x0000fffc, /* dst_mask */
341 FALSE
), /* pcrel_offset */
343 /* A relative 26 bit branch; the lower two bits must be zero. */
344 HOWTO (R_PPC64_REL24
, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 TRUE
, /* pc_relative */
350 complain_overflow_signed
, /* complain_on_overflow */
351 bfd_elf_generic_reloc
, /* special_function */
352 "R_PPC64_REL24", /* name */
353 FALSE
, /* partial_inplace */
355 0x03fffffc, /* dst_mask */
356 TRUE
), /* pcrel_offset */
358 /* A relative 16 bit branch; the lower two bits must be zero. */
359 HOWTO (R_PPC64_REL14
, /* type */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
363 TRUE
, /* pc_relative */
365 complain_overflow_signed
, /* complain_on_overflow */
366 bfd_elf_generic_reloc
, /* special_function */
367 "R_PPC64_REL14", /* name */
368 FALSE
, /* partial_inplace */
370 0x0000fffc, /* dst_mask */
371 TRUE
), /* pcrel_offset */
373 /* A relative 16 bit branch. Bit 10 should be set to indicate that
374 the branch is expected to be taken. The lower two bits must be
376 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
380 TRUE
, /* pc_relative */
382 complain_overflow_signed
, /* complain_on_overflow */
383 ppc64_elf_brtaken_reloc
, /* special_function */
384 "R_PPC64_REL14_BRTAKEN", /* name */
385 FALSE
, /* partial_inplace */
387 0x0000fffc, /* dst_mask */
388 TRUE
), /* pcrel_offset */
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is not expected to be taken. The lower two bits must
393 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE
, /* pc_relative */
399 complain_overflow_signed
, /* complain_on_overflow */
400 ppc64_elf_brtaken_reloc
, /* special_function */
401 "R_PPC64_REL14_BRNTAKEN",/* name */
402 FALSE
, /* partial_inplace */
404 0x0000fffc, /* dst_mask */
405 TRUE
), /* pcrel_offset */
407 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
409 HOWTO (R_PPC64_GOT16
, /* type */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE
, /* pc_relative */
415 complain_overflow_signed
, /* complain_on_overflow */
416 ppc64_elf_unhandled_reloc
, /* special_function */
417 "R_PPC64_GOT16", /* name */
418 FALSE
, /* partial_inplace */
420 0xffff, /* dst_mask */
421 FALSE
), /* pcrel_offset */
423 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
425 HOWTO (R_PPC64_GOT16_LO
, /* type */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
429 FALSE
, /* pc_relative */
431 complain_overflow_dont
, /* complain_on_overflow */
432 ppc64_elf_unhandled_reloc
, /* special_function */
433 "R_PPC64_GOT16_LO", /* name */
434 FALSE
, /* partial_inplace */
436 0xffff, /* dst_mask */
437 FALSE
), /* pcrel_offset */
439 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
441 HOWTO (R_PPC64_GOT16_HI
, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE
, /* pc_relative */
447 complain_overflow_dont
,/* complain_on_overflow */
448 ppc64_elf_unhandled_reloc
, /* special_function */
449 "R_PPC64_GOT16_HI", /* name */
450 FALSE
, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE
), /* pcrel_offset */
455 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
457 HOWTO (R_PPC64_GOT16_HA
, /* type */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
461 FALSE
, /* pc_relative */
463 complain_overflow_dont
,/* complain_on_overflow */
464 ppc64_elf_unhandled_reloc
, /* special_function */
465 "R_PPC64_GOT16_HA", /* name */
466 FALSE
, /* partial_inplace */
468 0xffff, /* dst_mask */
469 FALSE
), /* pcrel_offset */
471 /* This is used only by the dynamic linker. The symbol should exist
472 both in the object being run and in some shared library. The
473 dynamic linker copies the data addressed by the symbol from the
474 shared library into the object, because the object being
475 run has to have the data at some particular address. */
476 HOWTO (R_PPC64_COPY
, /* type */
478 0, /* this one is variable size */
480 FALSE
, /* pc_relative */
482 complain_overflow_dont
, /* complain_on_overflow */
483 ppc64_elf_unhandled_reloc
, /* special_function */
484 "R_PPC64_COPY", /* name */
485 FALSE
, /* partial_inplace */
488 FALSE
), /* pcrel_offset */
490 /* Like R_PPC64_ADDR64, but used when setting global offset table
492 HOWTO (R_PPC64_GLOB_DAT
, /* type */
494 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
496 FALSE
, /* pc_relative */
498 complain_overflow_dont
, /* complain_on_overflow */
499 ppc64_elf_unhandled_reloc
, /* special_function */
500 "R_PPC64_GLOB_DAT", /* name */
501 FALSE
, /* partial_inplace */
503 ONES (64), /* dst_mask */
504 FALSE
), /* pcrel_offset */
506 /* Created by the link editor. Marks a procedure linkage table
507 entry for a symbol. */
508 HOWTO (R_PPC64_JMP_SLOT
, /* type */
510 0, /* size (0 = byte, 1 = short, 2 = long) */
512 FALSE
, /* pc_relative */
514 complain_overflow_dont
, /* complain_on_overflow */
515 ppc64_elf_unhandled_reloc
, /* special_function */
516 "R_PPC64_JMP_SLOT", /* name */
517 FALSE
, /* partial_inplace */
520 FALSE
), /* pcrel_offset */
522 /* Used only by the dynamic linker. When the object is run, this
523 doubleword64 is set to the load address of the object, plus the
525 HOWTO (R_PPC64_RELATIVE
, /* type */
527 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
529 FALSE
, /* pc_relative */
531 complain_overflow_dont
, /* complain_on_overflow */
532 bfd_elf_generic_reloc
, /* special_function */
533 "R_PPC64_RELATIVE", /* name */
534 FALSE
, /* partial_inplace */
536 ONES (64), /* dst_mask */
537 FALSE
), /* pcrel_offset */
539 /* Like R_PPC64_ADDR32, but may be unaligned. */
540 HOWTO (R_PPC64_UADDR32
, /* type */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
544 FALSE
, /* pc_relative */
546 complain_overflow_bitfield
, /* complain_on_overflow */
547 bfd_elf_generic_reloc
, /* special_function */
548 "R_PPC64_UADDR32", /* name */
549 FALSE
, /* partial_inplace */
551 0xffffffff, /* dst_mask */
552 FALSE
), /* pcrel_offset */
554 /* Like R_PPC64_ADDR16, but may be unaligned. */
555 HOWTO (R_PPC64_UADDR16
, /* type */
557 1, /* size (0 = byte, 1 = short, 2 = long) */
559 FALSE
, /* pc_relative */
561 complain_overflow_bitfield
, /* complain_on_overflow */
562 bfd_elf_generic_reloc
, /* special_function */
563 "R_PPC64_UADDR16", /* name */
564 FALSE
, /* partial_inplace */
566 0xffff, /* dst_mask */
567 FALSE
), /* pcrel_offset */
569 /* 32-bit PC relative. */
570 HOWTO (R_PPC64_REL32
, /* type */
572 2, /* size (0 = byte, 1 = short, 2 = long) */
574 TRUE
, /* pc_relative */
576 /* FIXME: Verify. Was complain_overflow_bitfield. */
577 complain_overflow_signed
, /* complain_on_overflow */
578 bfd_elf_generic_reloc
, /* special_function */
579 "R_PPC64_REL32", /* name */
580 FALSE
, /* partial_inplace */
582 0xffffffff, /* dst_mask */
583 TRUE
), /* pcrel_offset */
585 /* 32-bit relocation to the symbol's procedure linkage table. */
586 HOWTO (R_PPC64_PLT32
, /* type */
588 2, /* size (0 = byte, 1 = short, 2 = long) */
590 FALSE
, /* pc_relative */
592 complain_overflow_bitfield
, /* complain_on_overflow */
593 ppc64_elf_unhandled_reloc
, /* special_function */
594 "R_PPC64_PLT32", /* name */
595 FALSE
, /* partial_inplace */
597 0xffffffff, /* dst_mask */
598 FALSE
), /* pcrel_offset */
600 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
601 FIXME: R_PPC64_PLTREL32 not supported. */
602 HOWTO (R_PPC64_PLTREL32
, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 TRUE
, /* pc_relative */
608 complain_overflow_signed
, /* complain_on_overflow */
609 bfd_elf_generic_reloc
, /* special_function */
610 "R_PPC64_PLTREL32", /* name */
611 FALSE
, /* partial_inplace */
613 0xffffffff, /* dst_mask */
614 TRUE
), /* pcrel_offset */
616 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
618 HOWTO (R_PPC64_PLT16_LO
, /* type */
620 1, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE
, /* pc_relative */
624 complain_overflow_dont
, /* complain_on_overflow */
625 ppc64_elf_unhandled_reloc
, /* special_function */
626 "R_PPC64_PLT16_LO", /* name */
627 FALSE
, /* partial_inplace */
629 0xffff, /* dst_mask */
630 FALSE
), /* pcrel_offset */
632 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
634 HOWTO (R_PPC64_PLT16_HI
, /* type */
636 1, /* size (0 = byte, 1 = short, 2 = long) */
638 FALSE
, /* pc_relative */
640 complain_overflow_dont
, /* complain_on_overflow */
641 ppc64_elf_unhandled_reloc
, /* special_function */
642 "R_PPC64_PLT16_HI", /* name */
643 FALSE
, /* partial_inplace */
645 0xffff, /* dst_mask */
646 FALSE
), /* pcrel_offset */
648 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
650 HOWTO (R_PPC64_PLT16_HA
, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 FALSE
, /* pc_relative */
656 complain_overflow_dont
, /* complain_on_overflow */
657 ppc64_elf_unhandled_reloc
, /* special_function */
658 "R_PPC64_PLT16_HA", /* name */
659 FALSE
, /* partial_inplace */
661 0xffff, /* dst_mask */
662 FALSE
), /* pcrel_offset */
664 /* 16-bit section relative relocation. */
665 HOWTO (R_PPC64_SECTOFF
, /* type */
667 1, /* size (0 = byte, 1 = short, 2 = long) */
669 FALSE
, /* pc_relative */
671 complain_overflow_bitfield
, /* complain_on_overflow */
672 ppc64_elf_sectoff_reloc
, /* special_function */
673 "R_PPC64_SECTOFF", /* name */
674 FALSE
, /* partial_inplace */
676 0xffff, /* dst_mask */
677 FALSE
), /* pcrel_offset */
679 /* Like R_PPC64_SECTOFF, but no overflow warning. */
680 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
682 1, /* size (0 = byte, 1 = short, 2 = long) */
684 FALSE
, /* pc_relative */
686 complain_overflow_dont
, /* complain_on_overflow */
687 ppc64_elf_sectoff_reloc
, /* special_function */
688 "R_PPC64_SECTOFF_LO", /* name */
689 FALSE
, /* partial_inplace */
691 0xffff, /* dst_mask */
692 FALSE
), /* pcrel_offset */
694 /* 16-bit upper half section relative relocation. */
695 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
697 1, /* size (0 = byte, 1 = short, 2 = long) */
699 FALSE
, /* pc_relative */
701 complain_overflow_dont
, /* complain_on_overflow */
702 ppc64_elf_sectoff_reloc
, /* special_function */
703 "R_PPC64_SECTOFF_HI", /* name */
704 FALSE
, /* partial_inplace */
706 0xffff, /* dst_mask */
707 FALSE
), /* pcrel_offset */
709 /* 16-bit upper half adjusted section relative relocation. */
710 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
712 1, /* size (0 = byte, 1 = short, 2 = long) */
714 FALSE
, /* pc_relative */
716 complain_overflow_dont
, /* complain_on_overflow */
717 ppc64_elf_sectoff_ha_reloc
, /* special_function */
718 "R_PPC64_SECTOFF_HA", /* name */
719 FALSE
, /* partial_inplace */
721 0xffff, /* dst_mask */
722 FALSE
), /* pcrel_offset */
724 /* Like R_PPC64_REL24 without touching the two least significant bits. */
725 HOWTO (R_PPC64_REL30
, /* type */
727 2, /* size (0 = byte, 1 = short, 2 = long) */
729 TRUE
, /* pc_relative */
731 complain_overflow_dont
, /* complain_on_overflow */
732 bfd_elf_generic_reloc
, /* special_function */
733 "R_PPC64_REL30", /* name */
734 FALSE
, /* partial_inplace */
736 0xfffffffc, /* dst_mask */
737 TRUE
), /* pcrel_offset */
739 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
741 /* A standard 64-bit relocation. */
742 HOWTO (R_PPC64_ADDR64
, /* type */
744 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
746 FALSE
, /* pc_relative */
748 complain_overflow_dont
, /* complain_on_overflow */
749 bfd_elf_generic_reloc
, /* special_function */
750 "R_PPC64_ADDR64", /* name */
751 FALSE
, /* partial_inplace */
753 ONES (64), /* dst_mask */
754 FALSE
), /* pcrel_offset */
756 /* The bits 32-47 of an address. */
757 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
759 1, /* size (0 = byte, 1 = short, 2 = long) */
761 FALSE
, /* pc_relative */
763 complain_overflow_dont
, /* complain_on_overflow */
764 bfd_elf_generic_reloc
, /* special_function */
765 "R_PPC64_ADDR16_HIGHER", /* name */
766 FALSE
, /* partial_inplace */
768 0xffff, /* dst_mask */
769 FALSE
), /* pcrel_offset */
771 /* The bits 32-47 of an address, plus 1 if the contents of the low
772 16 bits, treated as a signed number, is negative. */
773 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
775 1, /* size (0 = byte, 1 = short, 2 = long) */
777 FALSE
, /* pc_relative */
779 complain_overflow_dont
, /* complain_on_overflow */
780 ppc64_elf_ha_reloc
, /* special_function */
781 "R_PPC64_ADDR16_HIGHERA", /* name */
782 FALSE
, /* partial_inplace */
784 0xffff, /* dst_mask */
785 FALSE
), /* pcrel_offset */
787 /* The bits 48-63 of an address. */
788 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
790 1, /* size (0 = byte, 1 = short, 2 = long) */
792 FALSE
, /* pc_relative */
794 complain_overflow_dont
, /* complain_on_overflow */
795 bfd_elf_generic_reloc
, /* special_function */
796 "R_PPC64_ADDR16_HIGHEST", /* name */
797 FALSE
, /* partial_inplace */
799 0xffff, /* dst_mask */
800 FALSE
), /* pcrel_offset */
802 /* The bits 48-63 of an address, plus 1 if the contents of the low
803 16 bits, treated as a signed number, is negative. */
804 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
806 1, /* size (0 = byte, 1 = short, 2 = long) */
808 FALSE
, /* pc_relative */
810 complain_overflow_dont
, /* complain_on_overflow */
811 ppc64_elf_ha_reloc
, /* special_function */
812 "R_PPC64_ADDR16_HIGHESTA", /* name */
813 FALSE
, /* partial_inplace */
815 0xffff, /* dst_mask */
816 FALSE
), /* pcrel_offset */
818 /* Like ADDR64, but may be unaligned. */
819 HOWTO (R_PPC64_UADDR64
, /* type */
821 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
823 FALSE
, /* pc_relative */
825 complain_overflow_dont
, /* complain_on_overflow */
826 bfd_elf_generic_reloc
, /* special_function */
827 "R_PPC64_UADDR64", /* name */
828 FALSE
, /* partial_inplace */
830 ONES (64), /* dst_mask */
831 FALSE
), /* pcrel_offset */
833 /* 64-bit relative relocation. */
834 HOWTO (R_PPC64_REL64
, /* type */
836 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
838 TRUE
, /* pc_relative */
840 complain_overflow_dont
, /* complain_on_overflow */
841 bfd_elf_generic_reloc
, /* special_function */
842 "R_PPC64_REL64", /* name */
843 FALSE
, /* partial_inplace */
845 ONES (64), /* dst_mask */
846 TRUE
), /* pcrel_offset */
848 /* 64-bit relocation to the symbol's procedure linkage table. */
849 HOWTO (R_PPC64_PLT64
, /* type */
851 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
853 FALSE
, /* pc_relative */
855 complain_overflow_dont
, /* complain_on_overflow */
856 ppc64_elf_unhandled_reloc
, /* special_function */
857 "R_PPC64_PLT64", /* name */
858 FALSE
, /* partial_inplace */
860 ONES (64), /* dst_mask */
861 FALSE
), /* pcrel_offset */
863 /* 64-bit PC relative relocation to the symbol's procedure linkage
865 /* FIXME: R_PPC64_PLTREL64 not supported. */
866 HOWTO (R_PPC64_PLTREL64
, /* type */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
870 TRUE
, /* pc_relative */
872 complain_overflow_dont
, /* complain_on_overflow */
873 ppc64_elf_unhandled_reloc
, /* special_function */
874 "R_PPC64_PLTREL64", /* name */
875 FALSE
, /* partial_inplace */
877 ONES (64), /* dst_mask */
878 TRUE
), /* pcrel_offset */
880 /* 16 bit TOC-relative relocation. */
882 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
883 HOWTO (R_PPC64_TOC16
, /* type */
885 1, /* size (0 = byte, 1 = short, 2 = long) */
887 FALSE
, /* pc_relative */
889 complain_overflow_signed
, /* complain_on_overflow */
890 ppc64_elf_toc_reloc
, /* special_function */
891 "R_PPC64_TOC16", /* name */
892 FALSE
, /* partial_inplace */
894 0xffff, /* dst_mask */
895 FALSE
), /* pcrel_offset */
897 /* 16 bit TOC-relative relocation without overflow. */
899 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
900 HOWTO (R_PPC64_TOC16_LO
, /* type */
902 1, /* size (0 = byte, 1 = short, 2 = long) */
904 FALSE
, /* pc_relative */
906 complain_overflow_dont
, /* complain_on_overflow */
907 ppc64_elf_toc_reloc
, /* special_function */
908 "R_PPC64_TOC16_LO", /* name */
909 FALSE
, /* partial_inplace */
911 0xffff, /* dst_mask */
912 FALSE
), /* pcrel_offset */
914 /* 16 bit TOC-relative relocation, high 16 bits. */
916 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
917 HOWTO (R_PPC64_TOC16_HI
, /* type */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE
, /* pc_relative */
923 complain_overflow_dont
, /* complain_on_overflow */
924 ppc64_elf_toc_reloc
, /* special_function */
925 "R_PPC64_TOC16_HI", /* name */
926 FALSE
, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE
), /* pcrel_offset */
931 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
932 contents of the low 16 bits, treated as a signed number, is
935 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
936 HOWTO (R_PPC64_TOC16_HA
, /* type */
938 1, /* size (0 = byte, 1 = short, 2 = long) */
940 FALSE
, /* pc_relative */
942 complain_overflow_dont
, /* complain_on_overflow */
943 ppc64_elf_toc_ha_reloc
, /* special_function */
944 "R_PPC64_TOC16_HA", /* name */
945 FALSE
, /* partial_inplace */
947 0xffff, /* dst_mask */
948 FALSE
), /* pcrel_offset */
950 /* 64-bit relocation; insert value of TOC base (.TOC.). */
952 /* R_PPC64_TOC 51 doubleword64 .TOC. */
953 HOWTO (R_PPC64_TOC
, /* type */
955 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
957 FALSE
, /* pc_relative */
959 complain_overflow_bitfield
, /* complain_on_overflow */
960 ppc64_elf_toc64_reloc
, /* special_function */
961 "R_PPC64_TOC", /* name */
962 FALSE
, /* partial_inplace */
964 ONES (64), /* dst_mask */
965 FALSE
), /* pcrel_offset */
967 /* Like R_PPC64_GOT16, but also informs the link editor that the
968 value to relocate may (!) refer to a PLT entry which the link
969 editor (a) may replace with the symbol value. If the link editor
970 is unable to fully resolve the symbol, it may (b) create a PLT
971 entry and store the address to the new PLT entry in the GOT.
972 This permits lazy resolution of function symbols at run time.
973 The link editor may also skip all of this and just (c) emit a
974 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
975 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
976 HOWTO (R_PPC64_PLTGOT16
, /* type */
978 1, /* size (0 = byte, 1 = short, 2 = long) */
980 FALSE
, /* pc_relative */
982 complain_overflow_signed
, /* complain_on_overflow */
983 ppc64_elf_unhandled_reloc
, /* special_function */
984 "R_PPC64_PLTGOT16", /* name */
985 FALSE
, /* partial_inplace */
987 0xffff, /* dst_mask */
988 FALSE
), /* pcrel_offset */
990 /* Like R_PPC64_PLTGOT16, but without overflow. */
991 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
992 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
994 1, /* size (0 = byte, 1 = short, 2 = long) */
996 FALSE
, /* pc_relative */
998 complain_overflow_dont
, /* complain_on_overflow */
999 ppc64_elf_unhandled_reloc
, /* special_function */
1000 "R_PPC64_PLTGOT16_LO", /* name */
1001 FALSE
, /* partial_inplace */
1003 0xffff, /* dst_mask */
1004 FALSE
), /* pcrel_offset */
1006 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1007 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1008 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1009 16, /* rightshift */
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 FALSE
, /* pc_relative */
1014 complain_overflow_dont
, /* complain_on_overflow */
1015 ppc64_elf_unhandled_reloc
, /* special_function */
1016 "R_PPC64_PLTGOT16_HI", /* name */
1017 FALSE
, /* partial_inplace */
1019 0xffff, /* dst_mask */
1020 FALSE
), /* pcrel_offset */
1022 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1023 1 if the contents of the low 16 bits, treated as a signed number,
1025 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE
, /* pc_relative */
1032 complain_overflow_dont
,/* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc
, /* special_function */
1034 "R_PPC64_PLTGOT16_HA", /* name */
1035 FALSE
, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE
), /* pcrel_offset */
1040 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1041 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1043 1, /* size (0 = byte, 1 = short, 2 = long) */
1045 FALSE
, /* pc_relative */
1047 complain_overflow_bitfield
, /* complain_on_overflow */
1048 bfd_elf_generic_reloc
, /* special_function */
1049 "R_PPC64_ADDR16_DS", /* name */
1050 FALSE
, /* partial_inplace */
1052 0xfffc, /* dst_mask */
1053 FALSE
), /* pcrel_offset */
1055 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1056 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1058 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 FALSE
, /* pc_relative */
1062 complain_overflow_dont
,/* complain_on_overflow */
1063 bfd_elf_generic_reloc
, /* special_function */
1064 "R_PPC64_ADDR16_LO_DS",/* name */
1065 FALSE
, /* partial_inplace */
1067 0xfffc, /* dst_mask */
1068 FALSE
), /* pcrel_offset */
1070 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1071 HOWTO (R_PPC64_GOT16_DS
, /* type */
1073 1, /* size (0 = byte, 1 = short, 2 = long) */
1075 FALSE
, /* pc_relative */
1077 complain_overflow_signed
, /* complain_on_overflow */
1078 ppc64_elf_unhandled_reloc
, /* special_function */
1079 "R_PPC64_GOT16_DS", /* name */
1080 FALSE
, /* partial_inplace */
1082 0xfffc, /* dst_mask */
1083 FALSE
), /* pcrel_offset */
1085 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1086 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1088 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 FALSE
, /* pc_relative */
1092 complain_overflow_dont
, /* complain_on_overflow */
1093 ppc64_elf_unhandled_reloc
, /* special_function */
1094 "R_PPC64_GOT16_LO_DS", /* name */
1095 FALSE
, /* partial_inplace */
1097 0xfffc, /* dst_mask */
1098 FALSE
), /* pcrel_offset */
1100 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1101 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1103 1, /* size (0 = byte, 1 = short, 2 = long) */
1105 FALSE
, /* pc_relative */
1107 complain_overflow_dont
, /* complain_on_overflow */
1108 ppc64_elf_unhandled_reloc
, /* special_function */
1109 "R_PPC64_PLT16_LO_DS", /* name */
1110 FALSE
, /* partial_inplace */
1112 0xfffc, /* dst_mask */
1113 FALSE
), /* pcrel_offset */
1115 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1116 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1118 1, /* size (0 = byte, 1 = short, 2 = long) */
1120 FALSE
, /* pc_relative */
1122 complain_overflow_bitfield
, /* complain_on_overflow */
1123 ppc64_elf_sectoff_reloc
, /* special_function */
1124 "R_PPC64_SECTOFF_DS", /* name */
1125 FALSE
, /* partial_inplace */
1127 0xfffc, /* dst_mask */
1128 FALSE
), /* pcrel_offset */
1130 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1131 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1133 1, /* size (0 = byte, 1 = short, 2 = long) */
1135 FALSE
, /* pc_relative */
1137 complain_overflow_dont
, /* complain_on_overflow */
1138 ppc64_elf_sectoff_reloc
, /* special_function */
1139 "R_PPC64_SECTOFF_LO_DS",/* name */
1140 FALSE
, /* partial_inplace */
1142 0xfffc, /* dst_mask */
1143 FALSE
), /* pcrel_offset */
1145 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1146 HOWTO (R_PPC64_TOC16_DS
, /* type */
1148 1, /* size (0 = byte, 1 = short, 2 = long) */
1150 FALSE
, /* pc_relative */
1152 complain_overflow_signed
, /* complain_on_overflow */
1153 ppc64_elf_toc_reloc
, /* special_function */
1154 "R_PPC64_TOC16_DS", /* name */
1155 FALSE
, /* partial_inplace */
1157 0xfffc, /* dst_mask */
1158 FALSE
), /* pcrel_offset */
1160 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1161 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1163 1, /* size (0 = byte, 1 = short, 2 = long) */
1165 FALSE
, /* pc_relative */
1167 complain_overflow_dont
, /* complain_on_overflow */
1168 ppc64_elf_toc_reloc
, /* special_function */
1169 "R_PPC64_TOC16_LO_DS", /* name */
1170 FALSE
, /* partial_inplace */
1172 0xfffc, /* dst_mask */
1173 FALSE
), /* pcrel_offset */
1175 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1176 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1177 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1179 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 FALSE
, /* pc_relative */
1183 complain_overflow_signed
, /* complain_on_overflow */
1184 ppc64_elf_unhandled_reloc
, /* special_function */
1185 "R_PPC64_PLTGOT16_DS", /* name */
1186 FALSE
, /* partial_inplace */
1188 0xfffc, /* dst_mask */
1189 FALSE
), /* pcrel_offset */
1191 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1192 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1193 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1195 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 FALSE
, /* pc_relative */
1199 complain_overflow_dont
, /* complain_on_overflow */
1200 ppc64_elf_unhandled_reloc
, /* special_function */
1201 "R_PPC64_PLTGOT16_LO_DS",/* name */
1202 FALSE
, /* partial_inplace */
1204 0xfffc, /* dst_mask */
1205 FALSE
), /* pcrel_offset */
1207 /* Marker reloc for TLS. */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1212 FALSE
, /* pc_relative */
1214 complain_overflow_dont
, /* complain_on_overflow */
1215 bfd_elf_generic_reloc
, /* special_function */
1216 "R_PPC64_TLS", /* name */
1217 FALSE
, /* partial_inplace */
1220 FALSE
), /* pcrel_offset */
1222 /* Computes the load module index of the load module that contains the
1223 definition of its TLS sym. */
1224 HOWTO (R_PPC64_DTPMOD64
,
1226 4, /* size (0 = byte, 1 = short, 2 = long) */
1228 FALSE
, /* pc_relative */
1230 complain_overflow_dont
, /* complain_on_overflow */
1231 ppc64_elf_unhandled_reloc
, /* special_function */
1232 "R_PPC64_DTPMOD64", /* name */
1233 FALSE
, /* partial_inplace */
1235 ONES (64), /* dst_mask */
1236 FALSE
), /* pcrel_offset */
1238 /* Computes a dtv-relative displacement, the difference between the value
1239 of sym+add and the base address of the thread-local storage block that
1240 contains the definition of sym, minus 0x8000. */
1241 HOWTO (R_PPC64_DTPREL64
,
1243 4, /* size (0 = byte, 1 = short, 2 = long) */
1245 FALSE
, /* pc_relative */
1247 complain_overflow_dont
, /* complain_on_overflow */
1248 ppc64_elf_unhandled_reloc
, /* special_function */
1249 "R_PPC64_DTPREL64", /* name */
1250 FALSE
, /* partial_inplace */
1252 ONES (64), /* dst_mask */
1253 FALSE
), /* pcrel_offset */
1255 /* A 16 bit dtprel reloc. */
1256 HOWTO (R_PPC64_DTPREL16
,
1258 1, /* size (0 = byte, 1 = short, 2 = long) */
1260 FALSE
, /* pc_relative */
1262 complain_overflow_signed
, /* complain_on_overflow */
1263 ppc64_elf_unhandled_reloc
, /* special_function */
1264 "R_PPC64_DTPREL16", /* name */
1265 FALSE
, /* partial_inplace */
1267 0xffff, /* dst_mask */
1268 FALSE
), /* pcrel_offset */
1270 /* Like DTPREL16, but no overflow. */
1271 HOWTO (R_PPC64_DTPREL16_LO
,
1273 1, /* size (0 = byte, 1 = short, 2 = long) */
1275 FALSE
, /* pc_relative */
1277 complain_overflow_dont
, /* complain_on_overflow */
1278 ppc64_elf_unhandled_reloc
, /* special_function */
1279 "R_PPC64_DTPREL16_LO", /* name */
1280 FALSE
, /* partial_inplace */
1282 0xffff, /* dst_mask */
1283 FALSE
), /* pcrel_offset */
1285 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1286 HOWTO (R_PPC64_DTPREL16_HI
,
1287 16, /* rightshift */
1288 1, /* size (0 = byte, 1 = short, 2 = long) */
1290 FALSE
, /* pc_relative */
1292 complain_overflow_dont
, /* complain_on_overflow */
1293 ppc64_elf_unhandled_reloc
, /* special_function */
1294 "R_PPC64_DTPREL16_HI", /* name */
1295 FALSE
, /* partial_inplace */
1297 0xffff, /* dst_mask */
1298 FALSE
), /* pcrel_offset */
1300 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1301 HOWTO (R_PPC64_DTPREL16_HA
,
1302 16, /* rightshift */
1303 1, /* size (0 = byte, 1 = short, 2 = long) */
1305 FALSE
, /* pc_relative */
1307 complain_overflow_dont
, /* complain_on_overflow */
1308 ppc64_elf_unhandled_reloc
, /* special_function */
1309 "R_PPC64_DTPREL16_HA", /* name */
1310 FALSE
, /* partial_inplace */
1312 0xffff, /* dst_mask */
1313 FALSE
), /* pcrel_offset */
1315 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1316 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1317 32, /* rightshift */
1318 1, /* size (0 = byte, 1 = short, 2 = long) */
1320 FALSE
, /* pc_relative */
1322 complain_overflow_dont
, /* complain_on_overflow */
1323 ppc64_elf_unhandled_reloc
, /* special_function */
1324 "R_PPC64_DTPREL16_HIGHER", /* name */
1325 FALSE
, /* partial_inplace */
1327 0xffff, /* dst_mask */
1328 FALSE
), /* pcrel_offset */
1330 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1331 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1332 32, /* rightshift */
1333 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 FALSE
, /* pc_relative */
1337 complain_overflow_dont
, /* complain_on_overflow */
1338 ppc64_elf_unhandled_reloc
, /* special_function */
1339 "R_PPC64_DTPREL16_HIGHERA", /* name */
1340 FALSE
, /* partial_inplace */
1342 0xffff, /* dst_mask */
1343 FALSE
), /* pcrel_offset */
1345 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1346 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1347 48, /* rightshift */
1348 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 FALSE
, /* pc_relative */
1352 complain_overflow_dont
, /* complain_on_overflow */
1353 ppc64_elf_unhandled_reloc
, /* special_function */
1354 "R_PPC64_DTPREL16_HIGHEST", /* name */
1355 FALSE
, /* partial_inplace */
1357 0xffff, /* dst_mask */
1358 FALSE
), /* pcrel_offset */
1360 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1361 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1362 48, /* rightshift */
1363 1, /* size (0 = byte, 1 = short, 2 = long) */
1365 FALSE
, /* pc_relative */
1367 complain_overflow_dont
, /* complain_on_overflow */
1368 ppc64_elf_unhandled_reloc
, /* special_function */
1369 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1370 FALSE
, /* partial_inplace */
1372 0xffff, /* dst_mask */
1373 FALSE
), /* pcrel_offset */
1375 /* Like DTPREL16, but for insns with a DS field. */
1376 HOWTO (R_PPC64_DTPREL16_DS
,
1378 1, /* size (0 = byte, 1 = short, 2 = long) */
1380 FALSE
, /* pc_relative */
1382 complain_overflow_signed
, /* complain_on_overflow */
1383 ppc64_elf_unhandled_reloc
, /* special_function */
1384 "R_PPC64_DTPREL16_DS", /* name */
1385 FALSE
, /* partial_inplace */
1387 0xfffc, /* dst_mask */
1388 FALSE
), /* pcrel_offset */
1390 /* Like DTPREL16_DS, but no overflow. */
1391 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1393 1, /* size (0 = byte, 1 = short, 2 = long) */
1395 FALSE
, /* pc_relative */
1397 complain_overflow_dont
, /* complain_on_overflow */
1398 ppc64_elf_unhandled_reloc
, /* special_function */
1399 "R_PPC64_DTPREL16_LO_DS", /* name */
1400 FALSE
, /* partial_inplace */
1402 0xfffc, /* dst_mask */
1403 FALSE
), /* pcrel_offset */
1405 /* Computes a tp-relative displacement, the difference between the value of
1406 sym+add and the value of the thread pointer (r13). */
1407 HOWTO (R_PPC64_TPREL64
,
1409 4, /* size (0 = byte, 1 = short, 2 = long) */
1411 FALSE
, /* pc_relative */
1413 complain_overflow_dont
, /* complain_on_overflow */
1414 ppc64_elf_unhandled_reloc
, /* special_function */
1415 "R_PPC64_TPREL64", /* name */
1416 FALSE
, /* partial_inplace */
1418 ONES (64), /* dst_mask */
1419 FALSE
), /* pcrel_offset */
1421 /* A 16 bit tprel reloc. */
1422 HOWTO (R_PPC64_TPREL16
,
1424 1, /* size (0 = byte, 1 = short, 2 = long) */
1426 FALSE
, /* pc_relative */
1428 complain_overflow_signed
, /* complain_on_overflow */
1429 ppc64_elf_unhandled_reloc
, /* special_function */
1430 "R_PPC64_TPREL16", /* name */
1431 FALSE
, /* partial_inplace */
1433 0xffff, /* dst_mask */
1434 FALSE
), /* pcrel_offset */
1436 /* Like TPREL16, but no overflow. */
1437 HOWTO (R_PPC64_TPREL16_LO
,
1439 1, /* size (0 = byte, 1 = short, 2 = long) */
1441 FALSE
, /* pc_relative */
1443 complain_overflow_dont
, /* complain_on_overflow */
1444 ppc64_elf_unhandled_reloc
, /* special_function */
1445 "R_PPC64_TPREL16_LO", /* name */
1446 FALSE
, /* partial_inplace */
1448 0xffff, /* dst_mask */
1449 FALSE
), /* pcrel_offset */
1451 /* Like TPREL16_LO, but next higher group of 16 bits. */
1452 HOWTO (R_PPC64_TPREL16_HI
,
1453 16, /* rightshift */
1454 1, /* size (0 = byte, 1 = short, 2 = long) */
1456 FALSE
, /* pc_relative */
1458 complain_overflow_dont
, /* complain_on_overflow */
1459 ppc64_elf_unhandled_reloc
, /* special_function */
1460 "R_PPC64_TPREL16_HI", /* name */
1461 FALSE
, /* partial_inplace */
1463 0xffff, /* dst_mask */
1464 FALSE
), /* pcrel_offset */
1466 /* Like TPREL16_HI, but adjust for low 16 bits. */
1467 HOWTO (R_PPC64_TPREL16_HA
,
1468 16, /* rightshift */
1469 1, /* size (0 = byte, 1 = short, 2 = long) */
1471 FALSE
, /* pc_relative */
1473 complain_overflow_dont
, /* complain_on_overflow */
1474 ppc64_elf_unhandled_reloc
, /* special_function */
1475 "R_PPC64_TPREL16_HA", /* name */
1476 FALSE
, /* partial_inplace */
1478 0xffff, /* dst_mask */
1479 FALSE
), /* pcrel_offset */
1481 /* Like TPREL16_HI, but next higher group of 16 bits. */
1482 HOWTO (R_PPC64_TPREL16_HIGHER
,
1483 32, /* rightshift */
1484 1, /* size (0 = byte, 1 = short, 2 = long) */
1486 FALSE
, /* pc_relative */
1488 complain_overflow_dont
, /* complain_on_overflow */
1489 ppc64_elf_unhandled_reloc
, /* special_function */
1490 "R_PPC64_TPREL16_HIGHER", /* name */
1491 FALSE
, /* partial_inplace */
1493 0xffff, /* dst_mask */
1494 FALSE
), /* pcrel_offset */
1496 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1497 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1498 32, /* rightshift */
1499 1, /* size (0 = byte, 1 = short, 2 = long) */
1501 FALSE
, /* pc_relative */
1503 complain_overflow_dont
, /* complain_on_overflow */
1504 ppc64_elf_unhandled_reloc
, /* special_function */
1505 "R_PPC64_TPREL16_HIGHERA", /* name */
1506 FALSE
, /* partial_inplace */
1508 0xffff, /* dst_mask */
1509 FALSE
), /* pcrel_offset */
1511 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1512 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1513 48, /* rightshift */
1514 1, /* size (0 = byte, 1 = short, 2 = long) */
1516 FALSE
, /* pc_relative */
1518 complain_overflow_dont
, /* complain_on_overflow */
1519 ppc64_elf_unhandled_reloc
, /* special_function */
1520 "R_PPC64_TPREL16_HIGHEST", /* name */
1521 FALSE
, /* partial_inplace */
1523 0xffff, /* dst_mask */
1524 FALSE
), /* pcrel_offset */
1526 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1527 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1528 48, /* rightshift */
1529 1, /* size (0 = byte, 1 = short, 2 = long) */
1531 FALSE
, /* pc_relative */
1533 complain_overflow_dont
, /* complain_on_overflow */
1534 ppc64_elf_unhandled_reloc
, /* special_function */
1535 "R_PPC64_TPREL16_HIGHESTA", /* name */
1536 FALSE
, /* partial_inplace */
1538 0xffff, /* dst_mask */
1539 FALSE
), /* pcrel_offset */
1541 /* Like TPREL16, but for insns with a DS field. */
1542 HOWTO (R_PPC64_TPREL16_DS
,
1544 1, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE
, /* pc_relative */
1548 complain_overflow_signed
, /* complain_on_overflow */
1549 ppc64_elf_unhandled_reloc
, /* special_function */
1550 "R_PPC64_TPREL16_DS", /* name */
1551 FALSE
, /* partial_inplace */
1553 0xfffc, /* dst_mask */
1554 FALSE
), /* pcrel_offset */
1556 /* Like TPREL16_DS, but no overflow. */
1557 HOWTO (R_PPC64_TPREL16_LO_DS
,
1559 1, /* size (0 = byte, 1 = short, 2 = long) */
1561 FALSE
, /* pc_relative */
1563 complain_overflow_dont
, /* complain_on_overflow */
1564 ppc64_elf_unhandled_reloc
, /* special_function */
1565 "R_PPC64_TPREL16_LO_DS", /* name */
1566 FALSE
, /* partial_inplace */
1568 0xfffc, /* dst_mask */
1569 FALSE
), /* pcrel_offset */
1571 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1572 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1573 to the first entry relative to the TOC base (r2). */
1574 HOWTO (R_PPC64_GOT_TLSGD16
,
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE
, /* pc_relative */
1580 complain_overflow_signed
, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc
, /* special_function */
1582 "R_PPC64_GOT_TLSGD16", /* name */
1583 FALSE
, /* partial_inplace */
1585 0xffff, /* dst_mask */
1586 FALSE
), /* pcrel_offset */
1588 /* Like GOT_TLSGD16, but no overflow. */
1589 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1591 1, /* size (0 = byte, 1 = short, 2 = long) */
1593 FALSE
, /* pc_relative */
1595 complain_overflow_dont
, /* complain_on_overflow */
1596 ppc64_elf_unhandled_reloc
, /* special_function */
1597 "R_PPC64_GOT_TLSGD16_LO", /* name */
1598 FALSE
, /* partial_inplace */
1600 0xffff, /* dst_mask */
1601 FALSE
), /* pcrel_offset */
1603 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1604 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1605 16, /* rightshift */
1606 1, /* size (0 = byte, 1 = short, 2 = long) */
1608 FALSE
, /* pc_relative */
1610 complain_overflow_dont
, /* complain_on_overflow */
1611 ppc64_elf_unhandled_reloc
, /* special_function */
1612 "R_PPC64_GOT_TLSGD16_HI", /* name */
1613 FALSE
, /* partial_inplace */
1615 0xffff, /* dst_mask */
1616 FALSE
), /* pcrel_offset */
1618 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1619 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1620 16, /* rightshift */
1621 1, /* size (0 = byte, 1 = short, 2 = long) */
1623 FALSE
, /* pc_relative */
1625 complain_overflow_dont
, /* complain_on_overflow */
1626 ppc64_elf_unhandled_reloc
, /* special_function */
1627 "R_PPC64_GOT_TLSGD16_HA", /* name */
1628 FALSE
, /* partial_inplace */
1630 0xffff, /* dst_mask */
1631 FALSE
), /* pcrel_offset */
1633 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1634 with values (sym+add)@dtpmod and zero, and computes the offset to the
1635 first entry relative to the TOC base (r2). */
1636 HOWTO (R_PPC64_GOT_TLSLD16
,
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE
, /* pc_relative */
1642 complain_overflow_signed
, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc
, /* special_function */
1644 "R_PPC64_GOT_TLSLD16", /* name */
1645 FALSE
, /* partial_inplace */
1647 0xffff, /* dst_mask */
1648 FALSE
), /* pcrel_offset */
1650 /* Like GOT_TLSLD16, but no overflow. */
1651 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1653 1, /* size (0 = byte, 1 = short, 2 = long) */
1655 FALSE
, /* pc_relative */
1657 complain_overflow_dont
, /* complain_on_overflow */
1658 ppc64_elf_unhandled_reloc
, /* special_function */
1659 "R_PPC64_GOT_TLSLD16_LO", /* name */
1660 FALSE
, /* partial_inplace */
1662 0xffff, /* dst_mask */
1663 FALSE
), /* pcrel_offset */
1665 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1666 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1667 16, /* rightshift */
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 FALSE
, /* pc_relative */
1672 complain_overflow_dont
, /* complain_on_overflow */
1673 ppc64_elf_unhandled_reloc
, /* special_function */
1674 "R_PPC64_GOT_TLSLD16_HI", /* name */
1675 FALSE
, /* partial_inplace */
1677 0xffff, /* dst_mask */
1678 FALSE
), /* pcrel_offset */
1680 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1681 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1682 16, /* rightshift */
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1685 FALSE
, /* pc_relative */
1687 complain_overflow_dont
, /* complain_on_overflow */
1688 ppc64_elf_unhandled_reloc
, /* special_function */
1689 "R_PPC64_GOT_TLSLD16_HA", /* name */
1690 FALSE
, /* partial_inplace */
1692 0xffff, /* dst_mask */
1693 FALSE
), /* pcrel_offset */
1695 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1696 the offset to the entry relative to the TOC base (r2). */
1697 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1699 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 FALSE
, /* pc_relative */
1703 complain_overflow_signed
, /* complain_on_overflow */
1704 ppc64_elf_unhandled_reloc
, /* special_function */
1705 "R_PPC64_GOT_DTPREL16_DS", /* name */
1706 FALSE
, /* partial_inplace */
1708 0xfffc, /* dst_mask */
1709 FALSE
), /* pcrel_offset */
1711 /* Like GOT_DTPREL16_DS, but no overflow. */
1712 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1714 1, /* size (0 = byte, 1 = short, 2 = long) */
1716 FALSE
, /* pc_relative */
1718 complain_overflow_dont
, /* complain_on_overflow */
1719 ppc64_elf_unhandled_reloc
, /* special_function */
1720 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1721 FALSE
, /* partial_inplace */
1723 0xfffc, /* dst_mask */
1724 FALSE
), /* pcrel_offset */
1726 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1727 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1728 16, /* rightshift */
1729 1, /* size (0 = byte, 1 = short, 2 = long) */
1731 FALSE
, /* pc_relative */
1733 complain_overflow_dont
, /* complain_on_overflow */
1734 ppc64_elf_unhandled_reloc
, /* special_function */
1735 "R_PPC64_GOT_DTPREL16_HI", /* name */
1736 FALSE
, /* partial_inplace */
1738 0xffff, /* dst_mask */
1739 FALSE
), /* pcrel_offset */
1741 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1742 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1743 16, /* rightshift */
1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1746 FALSE
, /* pc_relative */
1748 complain_overflow_dont
, /* complain_on_overflow */
1749 ppc64_elf_unhandled_reloc
, /* special_function */
1750 "R_PPC64_GOT_DTPREL16_HA", /* name */
1751 FALSE
, /* partial_inplace */
1753 0xffff, /* dst_mask */
1754 FALSE
), /* pcrel_offset */
1756 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1757 offset to the entry relative to the TOC base (r2). */
1758 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1760 1, /* size (0 = byte, 1 = short, 2 = long) */
1762 FALSE
, /* pc_relative */
1764 complain_overflow_signed
, /* complain_on_overflow */
1765 ppc64_elf_unhandled_reloc
, /* special_function */
1766 "R_PPC64_GOT_TPREL16_DS", /* name */
1767 FALSE
, /* partial_inplace */
1769 0xfffc, /* dst_mask */
1770 FALSE
), /* pcrel_offset */
1772 /* Like GOT_TPREL16_DS, but no overflow. */
1773 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1775 1, /* size (0 = byte, 1 = short, 2 = long) */
1777 FALSE
, /* pc_relative */
1779 complain_overflow_dont
, /* complain_on_overflow */
1780 ppc64_elf_unhandled_reloc
, /* special_function */
1781 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1782 FALSE
, /* partial_inplace */
1784 0xfffc, /* dst_mask */
1785 FALSE
), /* pcrel_offset */
1787 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1788 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1789 16, /* rightshift */
1790 1, /* size (0 = byte, 1 = short, 2 = long) */
1792 FALSE
, /* pc_relative */
1794 complain_overflow_dont
, /* complain_on_overflow */
1795 ppc64_elf_unhandled_reloc
, /* special_function */
1796 "R_PPC64_GOT_TPREL16_HI", /* name */
1797 FALSE
, /* partial_inplace */
1799 0xffff, /* dst_mask */
1800 FALSE
), /* pcrel_offset */
1802 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1803 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1804 16, /* rightshift */
1805 1, /* size (0 = byte, 1 = short, 2 = long) */
1807 FALSE
, /* pc_relative */
1809 complain_overflow_dont
, /* complain_on_overflow */
1810 ppc64_elf_unhandled_reloc
, /* special_function */
1811 "R_PPC64_GOT_TPREL16_HA", /* name */
1812 FALSE
, /* partial_inplace */
1814 0xffff, /* dst_mask */
1815 FALSE
), /* pcrel_offset */
1817 /* GNU extension to record C++ vtable hierarchy. */
1818 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1820 0, /* size (0 = byte, 1 = short, 2 = long) */
1822 FALSE
, /* pc_relative */
1824 complain_overflow_dont
, /* complain_on_overflow */
1825 NULL
, /* special_function */
1826 "R_PPC64_GNU_VTINHERIT", /* name */
1827 FALSE
, /* partial_inplace */
1830 FALSE
), /* pcrel_offset */
1832 /* GNU extension to record C++ vtable member usage. */
1833 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1835 0, /* size (0 = byte, 1 = short, 2 = long) */
1837 FALSE
, /* pc_relative */
1839 complain_overflow_dont
, /* complain_on_overflow */
1840 NULL
, /* special_function */
1841 "R_PPC64_GNU_VTENTRY", /* name */
1842 FALSE
, /* partial_inplace */
1845 FALSE
), /* pcrel_offset */
1849 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1853 ppc_howto_init (void)
1855 unsigned int i
, type
;
1858 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
1861 type
= ppc64_elf_howto_raw
[i
].type
;
1862 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
1863 / sizeof (ppc64_elf_howto_table
[0])));
1864 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
1868 static reloc_howto_type
*
1869 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1870 bfd_reloc_code_real_type code
)
1872 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
1874 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
1875 /* Initialize howto table if needed. */
1883 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
1885 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
1887 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
1889 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
1891 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
1893 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
1895 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
1897 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
1899 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
1901 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
1903 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
1905 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
1907 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
1909 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
1911 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
1913 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
1915 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
1917 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
1919 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
1921 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
1923 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
1925 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
1927 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
1929 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
1931 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
1933 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
1935 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
1937 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
1939 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
1941 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
1943 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
1945 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
1947 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
1949 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
1951 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
1953 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
1955 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
1957 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
1959 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
1961 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
1963 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
1965 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
1967 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
1969 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
1971 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
1973 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
1975 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
1977 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
1979 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
1981 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
1983 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
1985 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
1987 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
1989 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
1991 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
1993 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
1995 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
1997 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
1999 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2001 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2003 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2005 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2007 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2009 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2011 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2013 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2015 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2017 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2019 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2021 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2023 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2025 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2027 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2029 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2031 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2033 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2035 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2037 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2039 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2041 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2043 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2045 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2047 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2049 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2051 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2053 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2055 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2057 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2059 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2061 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2063 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2065 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2067 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2069 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2071 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2073 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2075 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2077 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2079 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2081 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2083 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2087 return ppc64_elf_howto_table
[r
];
2090 /* Set the howto pointer for a PowerPC ELF reloc. */
2093 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2094 Elf_Internal_Rela
*dst
)
2098 /* Initialize howto table if needed. */
2099 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2102 type
= ELF64_R_TYPE (dst
->r_info
);
2103 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2104 / sizeof (ppc64_elf_howto_table
[0])));
2105 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2108 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2110 static bfd_reloc_status_type
2111 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2112 void *data
, asection
*input_section
,
2113 bfd
*output_bfd
, char **error_message
)
2115 /* If this is a relocatable link (output_bfd test tells us), just
2116 call the generic function. Any adjustment will be done at final
2118 if (output_bfd
!= NULL
)
2119 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2120 input_section
, output_bfd
, error_message
);
2122 /* Adjust the addend for sign extension of the low 16 bits.
2123 We won't actually be using the low 16 bits, so trashing them
2125 reloc_entry
->addend
+= 0x8000;
2126 return bfd_reloc_continue
;
2129 static bfd_reloc_status_type
2130 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2131 void *data
, asection
*input_section
,
2132 bfd
*output_bfd
, char **error_message
)
2135 enum elf_ppc64_reloc_type r_type
;
2136 bfd_size_type octets
;
2137 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2138 bfd_boolean is_power4
= FALSE
;
2140 /* If this is a relocatable link (output_bfd test tells us), just
2141 call the generic function. Any adjustment will be done at final
2143 if (output_bfd
!= NULL
)
2144 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2145 input_section
, output_bfd
, error_message
);
2147 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2148 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2149 insn
&= ~(0x01 << 21);
2150 r_type
= reloc_entry
->howto
->type
;
2151 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2152 || r_type
== R_PPC64_REL14_BRTAKEN
)
2153 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2157 /* Set 'a' bit. This is 0b00010 in BO field for branch
2158 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2159 for branch on CTR insns (BO == 1a00t or 1a01t). */
2160 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2162 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2165 return bfd_reloc_continue
;
2172 if (!bfd_is_com_section (symbol
->section
))
2173 target
= symbol
->value
;
2174 target
+= symbol
->section
->output_section
->vma
;
2175 target
+= symbol
->section
->output_offset
;
2176 target
+= reloc_entry
->addend
;
2178 from
= (reloc_entry
->address
2179 + input_section
->output_offset
2180 + input_section
->output_section
->vma
);
2182 /* Invert 'y' bit if not the default. */
2183 if ((bfd_signed_vma
) (target
- from
) < 0)
2186 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2187 return bfd_reloc_continue
;
2190 static bfd_reloc_status_type
2191 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2192 void *data
, asection
*input_section
,
2193 bfd
*output_bfd
, char **error_message
)
2195 /* If this is a relocatable link (output_bfd test tells us), just
2196 call the generic function. Any adjustment will be done at final
2198 if (output_bfd
!= NULL
)
2199 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2200 input_section
, output_bfd
, error_message
);
2202 /* Subtract the symbol section base address. */
2203 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2204 return bfd_reloc_continue
;
2207 static bfd_reloc_status_type
2208 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2209 void *data
, asection
*input_section
,
2210 bfd
*output_bfd
, char **error_message
)
2212 /* If this is a relocatable link (output_bfd test tells us), just
2213 call the generic function. Any adjustment will be done at final
2215 if (output_bfd
!= NULL
)
2216 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2217 input_section
, output_bfd
, error_message
);
2219 /* Subtract the symbol section base address. */
2220 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2222 /* Adjust the addend for sign extension of the low 16 bits. */
2223 reloc_entry
->addend
+= 0x8000;
2224 return bfd_reloc_continue
;
2227 static bfd_reloc_status_type
2228 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2229 void *data
, asection
*input_section
,
2230 bfd
*output_bfd
, char **error_message
)
2234 /* If this is a relocatable link (output_bfd test tells us), just
2235 call the generic function. Any adjustment will be done at final
2237 if (output_bfd
!= NULL
)
2238 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2239 input_section
, output_bfd
, error_message
);
2241 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2243 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2245 /* Subtract the TOC base address. */
2246 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2247 return bfd_reloc_continue
;
2250 static bfd_reloc_status_type
2251 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2252 void *data
, asection
*input_section
,
2253 bfd
*output_bfd
, char **error_message
)
2257 /* If this is a relocatable link (output_bfd test tells us), just
2258 call the generic function. Any adjustment will be done at final
2260 if (output_bfd
!= NULL
)
2261 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2262 input_section
, output_bfd
, error_message
);
2264 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2266 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2268 /* Subtract the TOC base address. */
2269 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2271 /* Adjust the addend for sign extension of the low 16 bits. */
2272 reloc_entry
->addend
+= 0x8000;
2273 return bfd_reloc_continue
;
2276 static bfd_reloc_status_type
2277 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2278 void *data
, asection
*input_section
,
2279 bfd
*output_bfd
, char **error_message
)
2282 bfd_size_type octets
;
2284 /* If this is a relocatable link (output_bfd test tells us), just
2285 call the generic function. Any adjustment will be done at final
2287 if (output_bfd
!= NULL
)
2288 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2289 input_section
, output_bfd
, error_message
);
2291 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2293 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2295 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2296 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2297 return bfd_reloc_ok
;
2300 static bfd_reloc_status_type
2301 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2302 void *data
, asection
*input_section
,
2303 bfd
*output_bfd
, char **error_message
)
2305 /* If this is a relocatable link (output_bfd test tells us), just
2306 call the generic function. Any adjustment will be done at final
2308 if (output_bfd
!= NULL
)
2309 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2310 input_section
, output_bfd
, error_message
);
2312 if (error_message
!= NULL
)
2314 static char buf
[60];
2315 sprintf (buf
, "generic linker can't handle %s",
2316 reloc_entry
->howto
->name
);
2317 *error_message
= buf
;
2319 return bfd_reloc_dangerous
;
2322 struct ppc64_elf_obj_tdata
2324 struct elf_obj_tdata elf
;
2326 /* Shortcuts to dynamic linker sections. */
2330 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2331 sections means we potentially need one of these for each input bfd. */
2333 bfd_signed_vma refcount
;
2338 #define ppc64_elf_tdata(bfd) \
2339 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2341 #define ppc64_tlsld_got(bfd) \
2342 (&ppc64_elf_tdata (bfd)->tlsld_got)
2344 /* Override the generic function because we store some extras. */
2347 ppc64_elf_mkobject (bfd
*abfd
)
2349 bfd_size_type amt
= sizeof (struct ppc64_elf_obj_tdata
);
2350 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2351 if (abfd
->tdata
.any
== NULL
)
2356 /* Fix bad default arch selected for a 64 bit input bfd when the
2357 default is 32 bit. */
2360 ppc64_elf_object_p (bfd
*abfd
)
2362 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2364 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2366 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2368 /* Relies on arch after 32 bit default being 64 bit default. */
2369 abfd
->arch_info
= abfd
->arch_info
->next
;
2370 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2376 /* Merge backend specific data from an object file to the output
2377 object file when linking. */
2380 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2382 /* Check if we have the same endianess. */
2383 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2384 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2385 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2389 if (bfd_big_endian (ibfd
))
2390 msg
= _("%s: compiled for a big endian system "
2391 "and target is little endian");
2393 msg
= _("%s: compiled for a little endian system "
2394 "and target is big endian");
2396 (*_bfd_error_handler
) (msg
, bfd_archive_filename (ibfd
));
2398 bfd_set_error (bfd_error_wrong_format
);
2405 /* Add extra PPC sections. */
2407 static struct bfd_elf_special_section
const ppc64_elf_special_sections
[]=
2409 { ".sdata", 0, NULL
, 0,
2410 SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2411 { ".sbss", 0, NULL
, 0,
2412 SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2413 { ".plt", 0, NULL
, 0,
2415 { ".toc", 0, NULL
, 0,
2416 SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2417 { ".toc1", 0, NULL
, 0,
2418 SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2419 { ".tocbss", 0, NULL
, 0,
2420 SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2425 struct _ppc64_elf_section_data
2427 struct bfd_elf_section_data elf
;
2429 /* An array with one entry for each opd function descriptor. */
2432 /* Points to the function code section for local opd entries. */
2433 asection
**func_sec
;
2434 /* After editing .opd, adjust references to opd local syms. */
2438 /* An array for toc sections, indexed by offset/8.
2439 Specifies the relocation symbol index used at a given toc offset. */
2443 #define ppc64_elf_section_data(sec) \
2444 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2447 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2449 struct _ppc64_elf_section_data
*sdata
;
2450 bfd_size_type amt
= sizeof (*sdata
);
2452 sdata
= bfd_zalloc (abfd
, amt
);
2455 sec
->used_by_bfd
= sdata
;
2457 return _bfd_elf_new_section_hook (abfd
, sec
);
2460 /* The following functions are specific to the ELF linker, while
2461 functions above are used generally. Those named ppc64_elf_* are
2462 called by the main ELF linker code. They appear in this file more
2463 or less in the order in which they are called. eg.
2464 ppc64_elf_check_relocs is called early in the link process,
2465 ppc64_elf_finish_dynamic_sections is one of the last functions
2468 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2469 functions have both a function code symbol and a function descriptor
2470 symbol. A call to foo in a relocatable object file looks like:
2477 The function definition in another object file might be:
2481 . .quad .TOC.@tocbase
2487 When the linker resolves the call during a static link, the branch
2488 unsurprisingly just goes to .foo and the .opd information is unused.
2489 If the function definition is in a shared library, things are a little
2490 different: The call goes via a plt call stub, the opd information gets
2491 copied to the plt, and the linker patches the nop.
2499 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2500 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2501 . std 2,40(1) # this is the general idea
2509 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2511 The "reloc ()" notation is supposed to indicate that the linker emits
2512 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2515 What are the difficulties here? Well, firstly, the relocations
2516 examined by the linker in check_relocs are against the function code
2517 sym .foo, while the dynamic relocation in the plt is emitted against
2518 the function descriptor symbol, foo. Somewhere along the line, we need
2519 to carefully copy dynamic link information from one symbol to the other.
2520 Secondly, the generic part of the elf linker will make .foo a dynamic
2521 symbol as is normal for most other backends. We need foo dynamic
2522 instead, at least for an application final link. However, when
2523 creating a shared library containing foo, we need to have both symbols
2524 dynamic so that references to .foo are satisfied during the early
2525 stages of linking. Otherwise the linker might decide to pull in a
2526 definition from some other object, eg. a static library. */
2528 /* The linker needs to keep track of the number of relocs that it
2529 decides to copy as dynamic relocs in check_relocs for each symbol.
2530 This is so that it can later discard them if they are found to be
2531 unnecessary. We store the information in a field extending the
2532 regular ELF linker hash table. */
2534 struct ppc_dyn_relocs
2536 struct ppc_dyn_relocs
*next
;
2538 /* The input section of the reloc. */
2541 /* Total number of relocs copied for the input section. */
2542 bfd_size_type count
;
2544 /* Number of pc-relative relocs copied for the input section. */
2545 bfd_size_type pc_count
;
2548 /* Track GOT entries needed for a given symbol. We might need more
2549 than one got entry per symbol. */
2552 struct got_entry
*next
;
2554 /* The symbol addend that we'll be placing in the GOT. */
2557 /* Unlike other ELF targets, we use separate GOT entries for the same
2558 symbol referenced from different input files. This is to support
2559 automatic multiple TOC/GOT sections, where the TOC base can vary
2560 from one input file to another.
2562 Point to the BFD owning this GOT entry. */
2565 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2566 TLS_TPREL or TLS_DTPREL for tls entries. */
2569 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2572 bfd_signed_vma refcount
;
2577 /* The same for PLT. */
2580 struct plt_entry
*next
;
2586 bfd_signed_vma refcount
;
2591 /* Of those relocs that might be copied as dynamic relocs, this macro
2592 selects those that must be copied when linking a shared library,
2593 even when the symbol is local. */
2595 #define MUST_BE_DYN_RELOC(RTYPE) \
2596 ((RTYPE) != R_PPC64_REL32 \
2597 && (RTYPE) != R_PPC64_REL64 \
2598 && (RTYPE) != R_PPC64_REL30)
2600 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2601 copying dynamic variables from a shared lib into an app's dynbss
2602 section, and instead use a dynamic relocation to point into the
2603 shared lib. With code that gcc generates, it's vital that this be
2604 enabled; In the PowerPC64 ABI, the address of a function is actually
2605 the address of a function descriptor, which resides in the .opd
2606 section. gcc uses the descriptor directly rather than going via the
2607 GOT as some other ABI's do, which means that initialized function
2608 pointers must reference the descriptor. Thus, a function pointer
2609 initialized to the address of a function in a shared library will
2610 either require a copy reloc, or a dynamic reloc. Using a copy reloc
2611 redefines the function desctriptor symbol to point to the copy. This
2612 presents a problem as a plt entry for that function is also
2613 initialized from the function descriptor symbol and the copy reloc
2614 may not be initialized first. */
2615 #define ELIMINATE_COPY_RELOCS 1
2617 /* Section name for stubs is the associated section name plus this
2619 #define STUB_SUFFIX ".stub"
2622 ppc_stub_long_branch:
2623 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2624 destination, but a 24 bit branch in a stub section will reach.
2627 ppc_stub_plt_branch:
2628 Similar to the above, but a 24 bit branch in the stub section won't
2629 reach its destination.
2630 . addis %r12,%r2,xxx@toc@ha
2631 . ld %r11,xxx@toc@l(%r12)
2636 Used to call a function in a shared library.
2637 . addis %r12,%r2,xxx@toc@ha
2639 . ld %r11,xxx+0@toc@l(%r12)
2640 . ld %r2,xxx+8@toc@l(%r12)
2642 . ld %r11,xxx+16@toc@l(%r12)
2645 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
2646 code to adjust the value and save r2 to support multiple toc sections.
2647 A ppc_stub_long_branch with an r2 offset looks like:
2649 . addis %r2,%r2,off@ha
2650 . addi %r2,%r2,off@l
2653 A ppc_stub_plt_branch with an r2 offset looks like:
2655 . addis %r12,%r2,xxx@toc@ha
2656 . ld %r11,xxx@toc@l(%r12)
2657 . addis %r2,%r2,off@ha
2658 . addi %r2,%r2,off@l
2663 enum ppc_stub_type
{
2665 ppc_stub_long_branch
,
2666 ppc_stub_long_branch_r2off
,
2667 ppc_stub_plt_branch
,
2668 ppc_stub_plt_branch_r2off
,
2672 struct ppc_stub_hash_entry
{
2674 /* Base hash table entry structure. */
2675 struct bfd_hash_entry root
;
2677 enum ppc_stub_type stub_type
;
2679 /* The stub section. */
2682 /* Offset within stub_sec of the beginning of this stub. */
2683 bfd_vma stub_offset
;
2685 /* Given the symbol's value and its section we can determine its final
2686 value when building the stubs (so the stub knows where to jump. */
2687 bfd_vma target_value
;
2688 asection
*target_section
;
2690 /* The symbol table entry, if any, that this was derived from. */
2691 struct ppc_link_hash_entry
*h
;
2693 /* And the reloc addend that this was derived from. */
2696 /* Where this stub is being called from, or, in the case of combined
2697 stub sections, the first input section in the group. */
2701 struct ppc_branch_hash_entry
{
2703 /* Base hash table entry structure. */
2704 struct bfd_hash_entry root
;
2706 /* Offset within .branch_lt. */
2707 unsigned int offset
;
2709 /* Generation marker. */
2713 struct ppc_link_hash_entry
2715 struct elf_link_hash_entry elf
;
2717 /* A pointer to the most recently used stub hash entry against this
2719 struct ppc_stub_hash_entry
*stub_cache
;
2721 /* Track dynamic relocs copied for this symbol. */
2722 struct ppc_dyn_relocs
*dyn_relocs
;
2724 /* Link between function code and descriptor symbols. */
2725 struct elf_link_hash_entry
*oh
;
2727 /* Flag function code and descriptor symbols. */
2728 unsigned int is_func
:1;
2729 unsigned int is_func_descriptor
:1;
2730 unsigned int is_entry
:1;
2732 /* Contexts in which symbol is used in the GOT (or TOC).
2733 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2734 corresponding relocs are encountered during check_relocs.
2735 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2736 indicate the corresponding GOT entry type is not needed.
2737 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2738 a TPREL one. We use a separate flag rather than setting TPREL
2739 just for convenience in distinguishing the two cases. */
2740 #define TLS_GD 1 /* GD reloc. */
2741 #define TLS_LD 2 /* LD reloc. */
2742 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2743 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2744 #define TLS_TLS 16 /* Any TLS reloc. */
2745 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2746 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2750 /* ppc64 ELF linker hash table. */
2752 struct ppc_link_hash_table
2754 struct elf_link_hash_table elf
;
2756 /* The stub hash table. */
2757 struct bfd_hash_table stub_hash_table
;
2759 /* Another hash table for plt_branch stubs. */
2760 struct bfd_hash_table branch_hash_table
;
2762 /* Linker stub bfd. */
2765 /* Linker call-backs. */
2766 asection
* (*add_stub_section
) (const char *, asection
*);
2767 void (*layout_sections_again
) (void);
2769 /* Array to keep track of which stub sections have been created, and
2770 information on stub grouping. */
2772 /* This is the section to which stubs in the group will be attached. */
2774 /* The stub section. */
2776 /* Along with elf_gp, specifies the TOC pointer used in this group. */
2780 /* Support for multiple toc sections. */
2781 unsigned int no_multi_toc
;
2782 unsigned int multi_toc_needed
;
2784 /* Temp used when calculating TOC pointers. */
2787 /* Highest input section id. */
2790 /* Highest output section index. */
2793 /* List of input sections for each output section. */
2794 asection
**input_list
;
2796 /* Short-cuts to get to dynamic linker sections. */
2807 /* Short-cut to first output tls section. */
2810 /* Shortcut to .__tls_get_addr. */
2811 struct elf_link_hash_entry
*tls_get_addr
;
2814 unsigned long stub_count
[ppc_stub_plt_call
];
2816 /* Set if we should emit symbols for stubs. */
2817 unsigned int emit_stub_syms
;
2820 unsigned int stub_error
;
2822 /* Flag set when small branches are detected. Used to
2823 select suitable defaults for the stub group size. */
2824 unsigned int has_14bit_branch
;
2826 /* Set if we detect a reference undefined weak symbol. */
2827 unsigned int have_undefweak
;
2829 /* Incremented every time we size stubs. */
2830 unsigned int stub_iteration
;
2832 /* Small local sym to section mapping cache. */
2833 struct sym_sec_cache sym_sec
;
2836 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2838 #define ppc_hash_table(p) \
2839 ((struct ppc_link_hash_table *) ((p)->hash))
2841 #define ppc_stub_hash_lookup(table, string, create, copy) \
2842 ((struct ppc_stub_hash_entry *) \
2843 bfd_hash_lookup ((table), (string), (create), (copy)))
2845 #define ppc_branch_hash_lookup(table, string, create, copy) \
2846 ((struct ppc_branch_hash_entry *) \
2847 bfd_hash_lookup ((table), (string), (create), (copy)))
2849 /* Create an entry in the stub hash table. */
2851 static struct bfd_hash_entry
*
2852 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2853 struct bfd_hash_table
*table
,
2856 /* Allocate the structure if it has not already been allocated by a
2860 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
2865 /* Call the allocation method of the superclass. */
2866 entry
= bfd_hash_newfunc (entry
, table
, string
);
2869 struct ppc_stub_hash_entry
*eh
;
2871 /* Initialize the local fields. */
2872 eh
= (struct ppc_stub_hash_entry
*) entry
;
2873 eh
->stub_type
= ppc_stub_none
;
2874 eh
->stub_sec
= NULL
;
2875 eh
->stub_offset
= 0;
2876 eh
->target_value
= 0;
2877 eh
->target_section
= NULL
;
2885 /* Create an entry in the branch hash table. */
2887 static struct bfd_hash_entry
*
2888 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
2889 struct bfd_hash_table
*table
,
2892 /* Allocate the structure if it has not already been allocated by a
2896 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
2901 /* Call the allocation method of the superclass. */
2902 entry
= bfd_hash_newfunc (entry
, table
, string
);
2905 struct ppc_branch_hash_entry
*eh
;
2907 /* Initialize the local fields. */
2908 eh
= (struct ppc_branch_hash_entry
*) entry
;
2916 /* Create an entry in a ppc64 ELF linker hash table. */
2918 static struct bfd_hash_entry
*
2919 link_hash_newfunc (struct bfd_hash_entry
*entry
,
2920 struct bfd_hash_table
*table
,
2923 /* Allocate the structure if it has not already been allocated by a
2927 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
2932 /* Call the allocation method of the superclass. */
2933 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
2936 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
2938 eh
->stub_cache
= NULL
;
2939 eh
->dyn_relocs
= NULL
;
2942 eh
->is_func_descriptor
= 0;
2950 /* Create a ppc64 ELF linker hash table. */
2952 static struct bfd_link_hash_table
*
2953 ppc64_elf_link_hash_table_create (bfd
*abfd
)
2955 struct ppc_link_hash_table
*htab
;
2956 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
2958 htab
= bfd_zmalloc (amt
);
2962 if (! _bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
))
2968 /* Init the stub hash table too. */
2969 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
))
2972 /* And the branch hash table. */
2973 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
))
2976 /* Initializing two fields of the union is just cosmetic. We really
2977 only care about glist, but when compiled on a 32-bit host the
2978 bfd_vma fields are larger. Setting the bfd_vma to zero makes
2979 debugger inspection of these fields look nicer. */
2980 htab
->elf
.init_refcount
.refcount
= 0;
2981 htab
->elf
.init_refcount
.glist
= NULL
;
2982 htab
->elf
.init_offset
.offset
= 0;
2983 htab
->elf
.init_offset
.glist
= NULL
;
2985 return &htab
->elf
.root
;
2988 /* Free the derived linker hash table. */
2991 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
2993 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
2995 bfd_hash_table_free (&ret
->stub_hash_table
);
2996 bfd_hash_table_free (&ret
->branch_hash_table
);
2997 _bfd_generic_link_hash_table_free (hash
);
3000 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3003 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3005 struct ppc_link_hash_table
*htab
;
3007 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3009 /* Always hook our dynamic sections into the first bfd, which is the
3010 linker created stub bfd. This ensures that the GOT header is at
3011 the start of the output TOC section. */
3012 htab
= ppc_hash_table (info
);
3013 htab
->stub_bfd
= abfd
;
3014 htab
->elf
.dynobj
= abfd
;
3017 /* Build a name for an entry in the stub hash table. */
3020 ppc_stub_name (const asection
*input_section
,
3021 const asection
*sym_sec
,
3022 const struct ppc_link_hash_entry
*h
,
3023 const Elf_Internal_Rela
*rel
)
3028 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3029 offsets from a sym as a branch target? In fact, we could
3030 probably assume the addend is always zero. */
3031 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3035 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3036 stub_name
= bfd_malloc (len
);
3037 if (stub_name
!= NULL
)
3039 sprintf (stub_name
, "%08x.%s+%x",
3040 input_section
->id
& 0xffffffff,
3041 h
->elf
.root
.root
.string
,
3042 (int) rel
->r_addend
& 0xffffffff);
3047 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3048 stub_name
= bfd_malloc (len
);
3049 if (stub_name
!= NULL
)
3051 sprintf (stub_name
, "%08x.%x:%x+%x",
3052 input_section
->id
& 0xffffffff,
3053 sym_sec
->id
& 0xffffffff,
3054 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3055 (int) rel
->r_addend
& 0xffffffff);
3061 /* Look up an entry in the stub hash. Stub entries are cached because
3062 creating the stub name takes a bit of time. */
3064 static struct ppc_stub_hash_entry
*
3065 ppc_get_stub_entry (const asection
*input_section
,
3066 const asection
*sym_sec
,
3067 struct elf_link_hash_entry
*hash
,
3068 const Elf_Internal_Rela
*rel
,
3069 struct ppc_link_hash_table
*htab
)
3071 struct ppc_stub_hash_entry
*stub_entry
;
3072 struct ppc_link_hash_entry
*h
= (struct ppc_link_hash_entry
*) hash
;
3073 const asection
*id_sec
;
3075 /* If this input section is part of a group of sections sharing one
3076 stub section, then use the id of the first section in the group.
3077 Stub names need to include a section id, as there may well be
3078 more than one stub used to reach say, printf, and we need to
3079 distinguish between them. */
3080 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3082 if (h
!= NULL
&& h
->stub_cache
!= NULL
3083 && h
->stub_cache
->h
== h
3084 && h
->stub_cache
->id_sec
== id_sec
)
3086 stub_entry
= h
->stub_cache
;
3092 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3093 if (stub_name
== NULL
)
3096 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3097 stub_name
, FALSE
, FALSE
);
3099 h
->stub_cache
= stub_entry
;
3107 /* Add a new stub entry to the stub hash. Not all fields of the new
3108 stub entry are initialised. */
3110 static struct ppc_stub_hash_entry
*
3111 ppc_add_stub (const char *stub_name
,
3113 struct ppc_link_hash_table
*htab
)
3117 struct ppc_stub_hash_entry
*stub_entry
;
3119 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3120 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3121 if (stub_sec
== NULL
)
3123 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3124 if (stub_sec
== NULL
)
3130 namelen
= strlen (link_sec
->name
);
3131 len
= namelen
+ sizeof (STUB_SUFFIX
);
3132 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3136 memcpy (s_name
, link_sec
->name
, namelen
);
3137 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3138 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3139 if (stub_sec
== NULL
)
3141 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3143 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3146 /* Enter this entry into the linker stub hash table. */
3147 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3149 if (stub_entry
== NULL
)
3151 (*_bfd_error_handler
) (_("%s: cannot create stub entry %s"),
3152 bfd_archive_filename (section
->owner
),
3157 stub_entry
->stub_sec
= stub_sec
;
3158 stub_entry
->stub_offset
= 0;
3159 stub_entry
->id_sec
= link_sec
;
3163 /* Create sections for linker generated code. */
3166 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3168 struct ppc_link_hash_table
*htab
;
3171 htab
= ppc_hash_table (info
);
3173 /* Create .sfpr for code to save and restore fp regs. */
3174 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
3175 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3176 htab
->sfpr
= bfd_make_section_anyway (dynobj
, ".sfpr");
3177 if (htab
->sfpr
== NULL
3178 || ! bfd_set_section_flags (dynobj
, htab
->sfpr
, flags
)
3179 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
3182 /* Create .glink for lazy dynamic linking support. */
3183 htab
->glink
= bfd_make_section_anyway (dynobj
, ".glink");
3184 if (htab
->glink
== NULL
3185 || ! bfd_set_section_flags (dynobj
, htab
->glink
, flags
)
3186 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 2))
3189 /* Create .branch_lt for plt_branch stubs. */
3190 flags
= (SEC_ALLOC
| SEC_LOAD
3191 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3192 htab
->brlt
= bfd_make_section_anyway (dynobj
, ".branch_lt");
3193 if (htab
->brlt
== NULL
3194 || ! bfd_set_section_flags (dynobj
, htab
->brlt
, flags
)
3195 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
3200 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3201 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3202 htab
->relbrlt
= bfd_make_section_anyway (dynobj
, ".rela.branch_lt");
3204 || ! bfd_set_section_flags (dynobj
, htab
->relbrlt
, flags
)
3205 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
3211 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3212 not already done. */
3215 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3217 asection
*got
, *relgot
;
3219 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
3223 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
3226 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
3231 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3232 | SEC_LINKER_CREATED
);
3234 got
= bfd_make_section (abfd
, ".got");
3236 || !bfd_set_section_flags (abfd
, got
, flags
)
3237 || !bfd_set_section_alignment (abfd
, got
, 3))
3240 relgot
= bfd_make_section (abfd
, ".rela.got");
3242 || ! bfd_set_section_flags (abfd
, relgot
, flags
| SEC_READONLY
)
3243 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
3246 ppc64_elf_tdata (abfd
)->got
= got
;
3247 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
3251 /* Create the dynamic sections, and set up shortcuts. */
3254 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3256 struct ppc_link_hash_table
*htab
;
3258 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
3261 htab
= ppc_hash_table (info
);
3263 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
3264 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
3265 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
3266 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
3268 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
3270 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
3271 || (!info
->shared
&& !htab
->relbss
))
3277 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3280 ppc64_elf_copy_indirect_symbol
3281 (const struct elf_backend_data
*bed ATTRIBUTE_UNUSED
,
3282 struct elf_link_hash_entry
*dir
,
3283 struct elf_link_hash_entry
*ind
)
3285 struct ppc_link_hash_entry
*edir
, *eind
;
3288 edir
= (struct ppc_link_hash_entry
*) dir
;
3289 eind
= (struct ppc_link_hash_entry
*) ind
;
3291 /* Copy over any dynamic relocs we may have on the indirect sym. */
3292 if (eind
->dyn_relocs
!= NULL
)
3294 if (edir
->dyn_relocs
!= NULL
)
3296 struct ppc_dyn_relocs
**pp
;
3297 struct ppc_dyn_relocs
*p
;
3299 if (eind
->elf
.root
.type
== bfd_link_hash_indirect
)
3302 /* Add reloc counts against the weak sym to the strong sym
3303 list. Merge any entries against the same section. */
3304 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3306 struct ppc_dyn_relocs
*q
;
3308 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3309 if (q
->sec
== p
->sec
)
3311 q
->pc_count
+= p
->pc_count
;
3312 q
->count
+= p
->count
;
3319 *pp
= edir
->dyn_relocs
;
3322 edir
->dyn_relocs
= eind
->dyn_relocs
;
3323 eind
->dyn_relocs
= NULL
;
3326 edir
->is_func
|= eind
->is_func
;
3327 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
3328 edir
->is_entry
|= eind
->is_entry
;
3329 edir
->tls_mask
|= eind
->tls_mask
;
3331 mask
= (ELF_LINK_HASH_REF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR
3332 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
| ELF_LINK_NON_GOT_REF
);
3333 /* If called to transfer flags for a weakdef during processing
3334 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3335 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3336 if (ELIMINATE_COPY_RELOCS
3337 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
3338 && (edir
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DYNAMIC_ADJUSTED
) != 0)
3339 mask
&= ~ELF_LINK_NON_GOT_REF
;
3341 edir
->elf
.elf_link_hash_flags
|= eind
->elf
.elf_link_hash_flags
& mask
;
3343 /* If we were called to copy over info for a weak sym, that's all. */
3344 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
3347 /* Copy over got entries that we may have already seen to the
3348 symbol which just became indirect. */
3349 if (eind
->elf
.got
.glist
!= NULL
)
3351 if (edir
->elf
.got
.glist
!= NULL
)
3353 struct got_entry
**entp
;
3354 struct got_entry
*ent
;
3356 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
3358 struct got_entry
*dent
;
3360 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
3361 if (dent
->addend
== ent
->addend
3362 && dent
->owner
== ent
->owner
3363 && dent
->tls_type
== ent
->tls_type
)
3365 dent
->got
.refcount
+= ent
->got
.refcount
;
3372 *entp
= edir
->elf
.got
.glist
;
3375 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
3376 eind
->elf
.got
.glist
= NULL
;
3379 /* And plt entries. */
3380 if (eind
->elf
.plt
.plist
!= NULL
)
3382 if (edir
->elf
.plt
.plist
!= NULL
)
3384 struct plt_entry
**entp
;
3385 struct plt_entry
*ent
;
3387 for (entp
= &eind
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3389 struct plt_entry
*dent
;
3391 for (dent
= edir
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3392 if (dent
->addend
== ent
->addend
)
3394 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3401 *entp
= edir
->elf
.plt
.plist
;
3404 edir
->elf
.plt
.plist
= eind
->elf
.plt
.plist
;
3405 eind
->elf
.plt
.plist
= NULL
;
3408 if (edir
->elf
.dynindx
== -1)
3410 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
3411 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
3412 eind
->elf
.dynindx
= -1;
3413 eind
->elf
.dynstr_index
= 0;
3416 BFD_ASSERT (eind
->elf
.dynindx
== -1);
3419 /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
3420 symbols undefined on the command-line. */
3423 ppc64_elf_mark_entry_syms (struct bfd_link_info
*info
)
3425 struct ppc_link_hash_table
*htab
;
3426 struct bfd_sym_chain
*sym
;
3428 htab
= ppc_hash_table (info
);
3429 for (sym
= info
->gc_sym_list
; sym
; sym
= sym
->next
)
3431 struct elf_link_hash_entry
*h
;
3433 h
= elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
3435 ((struct ppc_link_hash_entry
*) h
)->is_entry
= 1;
3441 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
3442 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
3444 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
3445 char *local_got_tls_masks
;
3447 if (local_got_ents
== NULL
)
3449 bfd_size_type size
= symtab_hdr
->sh_info
;
3451 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
3452 local_got_ents
= bfd_zalloc (abfd
, size
);
3453 if (local_got_ents
== NULL
)
3455 elf_local_got_ents (abfd
) = local_got_ents
;
3458 if ((tls_type
& TLS_EXPLICIT
) == 0)
3460 struct got_entry
*ent
;
3462 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
3463 if (ent
->addend
== r_addend
3464 && ent
->owner
== abfd
3465 && ent
->tls_type
== tls_type
)
3469 bfd_size_type amt
= sizeof (*ent
);
3470 ent
= bfd_alloc (abfd
, amt
);
3473 ent
->next
= local_got_ents
[r_symndx
];
3474 ent
->addend
= r_addend
;
3476 ent
->tls_type
= tls_type
;
3477 ent
->got
.refcount
= 0;
3478 local_got_ents
[r_symndx
] = ent
;
3480 ent
->got
.refcount
+= 1;
3483 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
3484 local_got_tls_masks
[r_symndx
] |= tls_type
;
3489 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
3491 struct plt_entry
*ent
;
3493 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
3494 if (ent
->addend
== addend
)
3498 bfd_size_type amt
= sizeof (*ent
);
3499 ent
= bfd_alloc (abfd
, amt
);
3502 ent
->next
= eh
->elf
.plt
.plist
;
3503 ent
->addend
= addend
;
3504 ent
->plt
.refcount
= 0;
3505 eh
->elf
.plt
.plist
= ent
;
3507 ent
->plt
.refcount
+= 1;
3508 eh
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
3513 /* Find the function descriptor hash entry from the given function code
3514 hash entry FH. Link the entries via their OH fields. */
3515 static struct ppc_link_hash_entry
*
3516 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
3518 struct ppc_link_hash_entry
*fdh
= (struct ppc_link_hash_entry
*) fh
->oh
;
3522 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
3524 fdh
= (struct ppc_link_hash_entry
*)
3525 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
3528 fdh
->is_func_descriptor
= 1;
3538 /* Look through the relocs for a section during the first phase, and
3539 calculate needed space in the global offset table, procedure
3540 linkage table, and dynamic reloc sections. */
3543 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
3544 asection
*sec
, const Elf_Internal_Rela
*relocs
)
3546 struct ppc_link_hash_table
*htab
;
3547 Elf_Internal_Shdr
*symtab_hdr
;
3548 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
3549 const Elf_Internal_Rela
*rel
;
3550 const Elf_Internal_Rela
*rel_end
;
3552 asection
**opd_sym_map
;
3554 if (info
->relocatable
)
3557 htab
= ppc_hash_table (info
);
3558 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3560 sym_hashes
= elf_sym_hashes (abfd
);
3561 sym_hashes_end
= (sym_hashes
3562 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
3563 - symtab_hdr
->sh_info
);
3567 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
3569 /* Garbage collection needs some extra help with .opd sections.
3570 We don't want to necessarily keep everything referenced by
3571 relocs in .opd, as that would keep all functions. Instead,
3572 if we reference an .opd symbol (a function descriptor), we
3573 want to keep the function code symbol's section. This is
3574 easy for global symbols, but for local syms we need to keep
3575 information about the associated function section. Later, if
3576 edit_opd deletes entries, we'll use this array to adjust
3577 local syms in .opd. */
3579 asection
*func_section
;
3584 amt
= sec
->_raw_size
* sizeof (union opd_info
) / 24;
3585 opd_sym_map
= bfd_zalloc (abfd
, amt
);
3586 if (opd_sym_map
== NULL
)
3588 ppc64_elf_section_data (sec
)->opd
.func_sec
= opd_sym_map
;
3591 if (htab
->sfpr
== NULL
3592 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
3595 rel_end
= relocs
+ sec
->reloc_count
;
3596 for (rel
= relocs
; rel
< rel_end
; rel
++)
3598 unsigned long r_symndx
;
3599 struct elf_link_hash_entry
*h
;
3600 enum elf_ppc64_reloc_type r_type
;
3603 r_symndx
= ELF64_R_SYM (rel
->r_info
);
3604 if (r_symndx
< symtab_hdr
->sh_info
)
3607 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3609 r_type
= ELF64_R_TYPE (rel
->r_info
);
3612 case R_PPC64_GOT_TLSLD16
:
3613 case R_PPC64_GOT_TLSLD16_LO
:
3614 case R_PPC64_GOT_TLSLD16_HI
:
3615 case R_PPC64_GOT_TLSLD16_HA
:
3616 ppc64_tlsld_got (abfd
)->refcount
+= 1;
3617 tls_type
= TLS_TLS
| TLS_LD
;
3620 case R_PPC64_GOT_TLSGD16
:
3621 case R_PPC64_GOT_TLSGD16_LO
:
3622 case R_PPC64_GOT_TLSGD16_HI
:
3623 case R_PPC64_GOT_TLSGD16_HA
:
3624 tls_type
= TLS_TLS
| TLS_GD
;
3627 case R_PPC64_GOT_TPREL16_DS
:
3628 case R_PPC64_GOT_TPREL16_LO_DS
:
3629 case R_PPC64_GOT_TPREL16_HI
:
3630 case R_PPC64_GOT_TPREL16_HA
:
3632 info
->flags
|= DF_STATIC_TLS
;
3633 tls_type
= TLS_TLS
| TLS_TPREL
;
3636 case R_PPC64_GOT_DTPREL16_DS
:
3637 case R_PPC64_GOT_DTPREL16_LO_DS
:
3638 case R_PPC64_GOT_DTPREL16_HI
:
3639 case R_PPC64_GOT_DTPREL16_HA
:
3640 tls_type
= TLS_TLS
| TLS_DTPREL
;
3642 sec
->has_tls_reloc
= 1;
3646 case R_PPC64_GOT16_DS
:
3647 case R_PPC64_GOT16_HA
:
3648 case R_PPC64_GOT16_HI
:
3649 case R_PPC64_GOT16_LO
:
3650 case R_PPC64_GOT16_LO_DS
:
3651 /* This symbol requires a global offset table entry. */
3652 sec
->has_gp_reloc
= 1;
3653 if (ppc64_elf_tdata (abfd
)->got
== NULL
3654 && !create_got_section (abfd
, info
))
3659 struct ppc_link_hash_entry
*eh
;
3660 struct got_entry
*ent
;
3662 eh
= (struct ppc_link_hash_entry
*) h
;
3663 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
3664 if (ent
->addend
== rel
->r_addend
3665 && ent
->owner
== abfd
3666 && ent
->tls_type
== tls_type
)
3670 bfd_size_type amt
= sizeof (*ent
);
3671 ent
= bfd_alloc (abfd
, amt
);
3674 ent
->next
= eh
->elf
.got
.glist
;
3675 ent
->addend
= rel
->r_addend
;
3677 ent
->tls_type
= tls_type
;
3678 ent
->got
.refcount
= 0;
3679 eh
->elf
.got
.glist
= ent
;
3681 ent
->got
.refcount
+= 1;
3682 eh
->tls_mask
|= tls_type
;
3685 /* This is a global offset table entry for a local symbol. */
3686 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
3687 rel
->r_addend
, tls_type
))
3691 case R_PPC64_PLT16_HA
:
3692 case R_PPC64_PLT16_HI
:
3693 case R_PPC64_PLT16_LO
:
3696 /* This symbol requires a procedure linkage table entry. We
3697 actually build the entry in adjust_dynamic_symbol,
3698 because this might be a case of linking PIC code without
3699 linking in any dynamic objects, in which case we don't
3700 need to generate a procedure linkage table after all. */
3703 /* It does not make sense to have a procedure linkage
3704 table entry for a local symbol. */
3705 bfd_set_error (bfd_error_bad_value
);
3709 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
3714 /* The following relocations don't need to propagate the
3715 relocation if linking a shared object since they are
3716 section relative. */
3717 case R_PPC64_SECTOFF
:
3718 case R_PPC64_SECTOFF_LO
:
3719 case R_PPC64_SECTOFF_HI
:
3720 case R_PPC64_SECTOFF_HA
:
3721 case R_PPC64_SECTOFF_DS
:
3722 case R_PPC64_SECTOFF_LO_DS
:
3723 case R_PPC64_DTPREL16
:
3724 case R_PPC64_DTPREL16_LO
:
3725 case R_PPC64_DTPREL16_HI
:
3726 case R_PPC64_DTPREL16_HA
:
3727 case R_PPC64_DTPREL16_DS
:
3728 case R_PPC64_DTPREL16_LO_DS
:
3729 case R_PPC64_DTPREL16_HIGHER
:
3730 case R_PPC64_DTPREL16_HIGHERA
:
3731 case R_PPC64_DTPREL16_HIGHEST
:
3732 case R_PPC64_DTPREL16_HIGHESTA
:
3737 case R_PPC64_TOC16_LO
:
3738 case R_PPC64_TOC16_HI
:
3739 case R_PPC64_TOC16_HA
:
3740 case R_PPC64_TOC16_DS
:
3741 case R_PPC64_TOC16_LO_DS
:
3742 sec
->has_gp_reloc
= 1;
3745 /* This relocation describes the C++ object vtable hierarchy.
3746 Reconstruct it for later use during GC. */
3747 case R_PPC64_GNU_VTINHERIT
:
3748 if (!_bfd_elf64_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3752 /* This relocation describes which C++ vtable entries are actually
3753 used. Record for later use during GC. */
3754 case R_PPC64_GNU_VTENTRY
:
3755 if (!_bfd_elf64_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3760 case R_PPC64_REL14_BRTAKEN
:
3761 case R_PPC64_REL14_BRNTAKEN
:
3762 htab
->has_14bit_branch
= 1;
3767 && h
->root
.root
.string
[0] == '.'
3768 && h
->root
.root
.string
[1] != 0)
3770 /* We may need a .plt entry if the function this reloc
3771 refers to is in a shared lib. */
3772 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
3775 if (h
== htab
->tls_get_addr
)
3776 sec
->has_tls_reloc
= 1;
3777 else if ((strncmp (h
->root
.root
.string
, ".__tls_get_addr", 15)
3779 && (h
->root
.root
.string
[15] == 0
3780 || h
->root
.root
.string
[15] == '@'))
3782 htab
->tls_get_addr
= h
;
3783 sec
->has_tls_reloc
= 1;
3788 case R_PPC64_TPREL64
:
3789 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
3791 info
->flags
|= DF_STATIC_TLS
;
3794 case R_PPC64_DTPMOD64
:
3795 if (rel
+ 1 < rel_end
3796 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
3797 && rel
[1].r_offset
== rel
->r_offset
+ 8)
3798 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
3800 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
3803 case R_PPC64_DTPREL64
:
3804 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
3806 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
3807 && rel
[-1].r_offset
== rel
->r_offset
- 8)
3808 /* This is the second reloc of a dtpmod, dtprel pair.
3809 Don't mark with TLS_DTPREL. */
3813 sec
->has_tls_reloc
= 1;
3816 struct ppc_link_hash_entry
*eh
;
3817 eh
= (struct ppc_link_hash_entry
*) h
;
3818 eh
->tls_mask
|= tls_type
;
3821 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
3822 rel
->r_addend
, tls_type
))
3825 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
3827 /* One extra to simplify get_tls_mask. */
3828 bfd_size_type amt
= sec
->_raw_size
* sizeof (unsigned) / 8 + 1;
3829 ppc64_elf_section_data (sec
)->t_symndx
= bfd_zalloc (abfd
, amt
);
3830 if (ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
3833 BFD_ASSERT (rel
->r_offset
% 8 == 0);
3834 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
3836 /* Mark the second slot of a GD or LD entry.
3837 -1 to indicate GD and -2 to indicate LD. */
3838 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
3839 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
3840 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
3841 ppc64_elf_section_data (sec
)->t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
3844 case R_PPC64_TPREL16
:
3845 case R_PPC64_TPREL16_LO
:
3846 case R_PPC64_TPREL16_HI
:
3847 case R_PPC64_TPREL16_HA
:
3848 case R_PPC64_TPREL16_DS
:
3849 case R_PPC64_TPREL16_LO_DS
:
3850 case R_PPC64_TPREL16_HIGHER
:
3851 case R_PPC64_TPREL16_HIGHERA
:
3852 case R_PPC64_TPREL16_HIGHEST
:
3853 case R_PPC64_TPREL16_HIGHESTA
:
3856 info
->flags
|= DF_STATIC_TLS
;
3861 case R_PPC64_ADDR64
:
3862 if (opd_sym_map
!= NULL
3864 && h
->root
.root
.string
[0] == '.'
3865 && h
->root
.root
.string
[1] != 0)
3866 get_fdh ((struct ppc_link_hash_entry
*) h
, htab
);
3868 if (opd_sym_map
!= NULL
3870 && rel
+ 1 < rel_end
3871 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
3875 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
3880 opd_sym_map
[rel
->r_offset
/ 24] = s
;
3887 case R_PPC64_ADDR14
:
3888 case R_PPC64_ADDR14_BRNTAKEN
:
3889 case R_PPC64_ADDR14_BRTAKEN
:
3890 case R_PPC64_ADDR16
:
3891 case R_PPC64_ADDR16_DS
:
3892 case R_PPC64_ADDR16_HA
:
3893 case R_PPC64_ADDR16_HI
:
3894 case R_PPC64_ADDR16_HIGHER
:
3895 case R_PPC64_ADDR16_HIGHERA
:
3896 case R_PPC64_ADDR16_HIGHEST
:
3897 case R_PPC64_ADDR16_HIGHESTA
:
3898 case R_PPC64_ADDR16_LO
:
3899 case R_PPC64_ADDR16_LO_DS
:
3900 case R_PPC64_ADDR24
:
3901 case R_PPC64_ADDR32
:
3902 case R_PPC64_UADDR16
:
3903 case R_PPC64_UADDR32
:
3904 case R_PPC64_UADDR64
:
3906 if (h
!= NULL
&& !info
->shared
)
3907 /* We may need a copy reloc. */
3908 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
3910 /* Don't propagate .opd relocs. */
3911 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
3914 /* Don't propagate relocs that the dynamic linker won't relocate. */
3915 if ((sec
->flags
& SEC_ALLOC
) == 0)
3918 /* If we are creating a shared library, and this is a reloc
3919 against a global symbol, or a non PC relative reloc
3920 against a local symbol, then we need to copy the reloc
3921 into the shared library. However, if we are linking with
3922 -Bsymbolic, we do not need to copy a reloc against a
3923 global symbol which is defined in an object we are
3924 including in the link (i.e., DEF_REGULAR is set). At
3925 this point we have not seen all the input files, so it is
3926 possible that DEF_REGULAR is not set now but will be set
3927 later (it is never cleared). In case of a weak definition,
3928 DEF_REGULAR may be cleared later by a strong definition in
3929 a shared library. We account for that possibility below by
3930 storing information in the dyn_relocs field of the hash
3931 table entry. A similar situation occurs when creating
3932 shared libraries and symbol visibility changes render the
3935 If on the other hand, we are creating an executable, we
3936 may need to keep relocations for symbols satisfied by a
3937 dynamic library if we manage to avoid copy relocs for the
3941 && (MUST_BE_DYN_RELOC (r_type
)
3943 && (! info
->symbolic
3944 || h
->root
.type
== bfd_link_hash_defweak
3945 || (h
->elf_link_hash_flags
3946 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
3947 || (ELIMINATE_COPY_RELOCS
3950 && (h
->root
.type
== bfd_link_hash_defweak
3951 || (h
->elf_link_hash_flags
3952 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
3954 struct ppc_dyn_relocs
*p
;
3955 struct ppc_dyn_relocs
**head
;
3957 /* We must copy these reloc types into the output file.
3958 Create a reloc section in dynobj and make room for
3965 name
= (bfd_elf_string_from_elf_section
3967 elf_elfheader (abfd
)->e_shstrndx
,
3968 elf_section_data (sec
)->rel_hdr
.sh_name
));
3972 if (strncmp (name
, ".rela", 5) != 0
3973 || strcmp (bfd_get_section_name (abfd
, sec
),
3976 (*_bfd_error_handler
)
3977 (_("%s: bad relocation section name `%s\'"),
3978 bfd_archive_filename (abfd
), name
);
3979 bfd_set_error (bfd_error_bad_value
);
3982 dynobj
= htab
->elf
.dynobj
;
3983 sreloc
= bfd_get_section_by_name (dynobj
, name
);
3988 sreloc
= bfd_make_section (dynobj
, name
);
3989 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
3990 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3991 if ((sec
->flags
& SEC_ALLOC
) != 0)
3992 flags
|= SEC_ALLOC
| SEC_LOAD
;
3994 || ! bfd_set_section_flags (dynobj
, sreloc
, flags
)
3995 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
3998 elf_section_data (sec
)->sreloc
= sreloc
;
4001 /* If this is a global symbol, we count the number of
4002 relocations we need for this symbol. */
4005 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
4009 /* Track dynamic relocs needed for local syms too.
4010 We really need local syms available to do this
4014 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4019 head
= ((struct ppc_dyn_relocs
**)
4020 &elf_section_data (s
)->local_dynrel
);
4024 if (p
== NULL
|| p
->sec
!= sec
)
4026 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4037 if (!MUST_BE_DYN_RELOC (r_type
))
4050 /* Return the section that should be marked against GC for a given
4054 ppc64_elf_gc_mark_hook (asection
*sec
,
4055 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4056 Elf_Internal_Rela
*rel
,
4057 struct elf_link_hash_entry
*h
,
4058 Elf_Internal_Sym
*sym
)
4060 asection
*rsec
= NULL
;
4064 enum elf_ppc64_reloc_type r_type
;
4065 struct ppc_link_hash_entry
*fdh
;
4067 r_type
= ELF64_R_TYPE (rel
->r_info
);
4070 case R_PPC64_GNU_VTINHERIT
:
4071 case R_PPC64_GNU_VTENTRY
:
4075 switch (h
->root
.type
)
4077 case bfd_link_hash_defined
:
4078 case bfd_link_hash_defweak
:
4079 fdh
= (struct ppc_link_hash_entry
*) h
;
4081 /* Function descriptor syms cause the associated
4082 function code sym section to be marked. */
4083 if (fdh
->is_func_descriptor
)
4084 rsec
= fdh
->oh
->root
.u
.def
.section
;
4086 /* Function entry syms return NULL if they are in .opd
4087 and are not ._start (or others undefined on the ld
4088 command line). Thus we avoid marking all function
4089 sections, as all functions are referenced in .opd. */
4090 else if ((fdh
->oh
!= NULL
4091 && ((struct ppc_link_hash_entry
*) fdh
->oh
)->is_entry
)
4092 || ppc64_elf_section_data (sec
)->opd
.func_sec
== NULL
)
4093 rsec
= h
->root
.u
.def
.section
;
4096 case bfd_link_hash_common
:
4097 rsec
= h
->root
.u
.c
.p
->section
;
4107 asection
**opd_sym_section
;
4109 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
4110 opd_sym_section
= ppc64_elf_section_data (rsec
)->opd
.func_sec
;
4111 if (opd_sym_section
!= NULL
)
4112 rsec
= opd_sym_section
[sym
->st_value
/ 24];
4113 else if (ppc64_elf_section_data (sec
)->opd
.func_sec
!= NULL
)
4120 /* Update the .got, .plt. and dynamic reloc reference counts for the
4121 section being removed. */
4124 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
4125 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4127 struct ppc_link_hash_table
*htab
;
4128 Elf_Internal_Shdr
*symtab_hdr
;
4129 struct elf_link_hash_entry
**sym_hashes
;
4130 struct got_entry
**local_got_ents
;
4131 const Elf_Internal_Rela
*rel
, *relend
;
4133 elf_section_data (sec
)->local_dynrel
= NULL
;
4135 htab
= ppc_hash_table (info
);
4136 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4137 sym_hashes
= elf_sym_hashes (abfd
);
4138 local_got_ents
= elf_local_got_ents (abfd
);
4140 relend
= relocs
+ sec
->reloc_count
;
4141 for (rel
= relocs
; rel
< relend
; rel
++)
4143 unsigned long r_symndx
;
4144 enum elf_ppc64_reloc_type r_type
;
4145 struct elf_link_hash_entry
*h
= NULL
;
4148 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4149 r_type
= ELF64_R_TYPE (rel
->r_info
);
4150 if (r_symndx
>= symtab_hdr
->sh_info
)
4152 struct ppc_link_hash_entry
*eh
;
4153 struct ppc_dyn_relocs
**pp
;
4154 struct ppc_dyn_relocs
*p
;
4156 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4157 eh
= (struct ppc_link_hash_entry
*) h
;
4159 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4162 /* Everything must go for SEC. */
4170 case R_PPC64_GOT_TLSLD16
:
4171 case R_PPC64_GOT_TLSLD16_LO
:
4172 case R_PPC64_GOT_TLSLD16_HI
:
4173 case R_PPC64_GOT_TLSLD16_HA
:
4174 ppc64_tlsld_got (abfd
)->refcount
-= 1;
4175 tls_type
= TLS_TLS
| TLS_LD
;
4178 case R_PPC64_GOT_TLSGD16
:
4179 case R_PPC64_GOT_TLSGD16_LO
:
4180 case R_PPC64_GOT_TLSGD16_HI
:
4181 case R_PPC64_GOT_TLSGD16_HA
:
4182 tls_type
= TLS_TLS
| TLS_GD
;
4185 case R_PPC64_GOT_TPREL16_DS
:
4186 case R_PPC64_GOT_TPREL16_LO_DS
:
4187 case R_PPC64_GOT_TPREL16_HI
:
4188 case R_PPC64_GOT_TPREL16_HA
:
4189 tls_type
= TLS_TLS
| TLS_TPREL
;
4192 case R_PPC64_GOT_DTPREL16_DS
:
4193 case R_PPC64_GOT_DTPREL16_LO_DS
:
4194 case R_PPC64_GOT_DTPREL16_HI
:
4195 case R_PPC64_GOT_DTPREL16_HA
:
4196 tls_type
= TLS_TLS
| TLS_DTPREL
;
4200 case R_PPC64_GOT16_DS
:
4201 case R_PPC64_GOT16_HA
:
4202 case R_PPC64_GOT16_HI
:
4203 case R_PPC64_GOT16_LO
:
4204 case R_PPC64_GOT16_LO_DS
:
4207 struct got_entry
*ent
;
4212 ent
= local_got_ents
[r_symndx
];
4214 for (; ent
!= NULL
; ent
= ent
->next
)
4215 if (ent
->addend
== rel
->r_addend
4216 && ent
->owner
== abfd
4217 && ent
->tls_type
== tls_type
)
4221 if (ent
->got
.refcount
> 0)
4222 ent
->got
.refcount
-= 1;
4226 case R_PPC64_PLT16_HA
:
4227 case R_PPC64_PLT16_HI
:
4228 case R_PPC64_PLT16_LO
:
4232 case R_PPC64_REL14_BRNTAKEN
:
4233 case R_PPC64_REL14_BRTAKEN
:
4237 struct plt_entry
*ent
;
4239 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4240 if (ent
->addend
== rel
->r_addend
)
4244 if (ent
->plt
.refcount
> 0)
4245 ent
->plt
.refcount
-= 1;
4256 /* Called via elf_link_hash_traverse to transfer dynamic linking
4257 information on function code symbol entries to their corresponding
4258 function descriptor symbol entries. */
4260 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
4262 struct bfd_link_info
*info
;
4263 struct ppc_link_hash_table
*htab
;
4264 struct plt_entry
*ent
;
4265 struct ppc_link_hash_entry
*fh
;
4266 struct ppc_link_hash_entry
*fdh
;
4267 bfd_boolean force_local
;
4269 fh
= (struct ppc_link_hash_entry
*) h
;
4270 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
4273 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
4274 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
4277 htab
= ppc_hash_table (info
);
4279 /* If this is a function code symbol, transfer dynamic linking
4280 information to the function descriptor symbol. */
4284 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
4285 && (fh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_REF_REGULAR
))
4286 htab
->have_undefweak
= TRUE
;
4288 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4289 if (ent
->plt
.refcount
> 0)
4292 || fh
->elf
.root
.root
.string
[0] != '.'
4293 || fh
->elf
.root
.root
.string
[1] == '\0')
4296 /* Find the corresponding function descriptor symbol. Create it
4297 as undefined if necessary. */
4299 fdh
= get_fdh (fh
, htab
);
4301 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
4302 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
4303 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
4307 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
4308 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
4312 struct bfd_link_hash_entry
*bh
;
4314 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4315 newsym
= bfd_make_empty_symbol (abfd
);
4316 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4317 newsym
->section
= bfd_und_section_ptr
;
4319 newsym
->flags
= BSF_OBJECT
;
4320 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4321 newsym
->flags
|= BSF_WEAK
;
4323 bh
= &fdh
->elf
.root
;
4324 if ( !(_bfd_generic_link_add_one_symbol
4325 (info
, abfd
, newsym
->name
, newsym
->flags
,
4326 newsym
->section
, newsym
->value
, NULL
, FALSE
, FALSE
, &bh
)))
4330 fdh
= (struct ppc_link_hash_entry
*) bh
;
4331 fdh
->elf
.elf_link_hash_flags
&= ~ELF_LINK_NON_ELF
;
4333 fdh
->elf
.type
= STT_OBJECT
;
4337 && (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0
4339 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
4340 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) != 0
4341 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
4342 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
4344 if (fdh
->elf
.dynindx
== -1)
4345 if (! bfd_elf64_link_record_dynamic_symbol (info
, &fdh
->elf
))
4347 fdh
->elf
.elf_link_hash_flags
4348 |= (fh
->elf
.elf_link_hash_flags
& (ELF_LINK_HASH_REF_REGULAR
4349 | ELF_LINK_HASH_REF_DYNAMIC
4350 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4351 | ELF_LINK_NON_GOT_REF
));
4352 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
4354 fdh
->elf
.plt
.plist
= fh
->elf
.plt
.plist
;
4355 fdh
->elf
.elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
4357 fdh
->is_func_descriptor
= 1;
4362 /* Now that the info is on the function descriptor, clear the
4363 function code sym info. Any function code syms for which we
4364 don't have a definition in a regular file, we force local.
4365 This prevents a shared library from exporting syms that have
4366 been imported from another library. Function code syms that
4367 are really in the library we must leave global to prevent the
4368 linker dragging in a definition from a static library. */
4371 && ((fh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0
4373 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0
4374 || (fdh
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0));
4375 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
4380 #define MIN_SAVE_FPR 14
4381 #define MAX_SAVE_FPR 31
4383 /* Called near the start of bfd_elf_size_dynamic_sections. We use
4384 this hook to a) provide some gcc support functions, and b) transfer
4385 dynamic linking information gathered so far on function code symbol
4386 entries, to their corresponding function descriptor symbol entries. */
4388 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
4389 struct bfd_link_info
*info
)
4391 struct ppc_link_hash_table
*htab
;
4392 unsigned int lowest_savef
= MAX_SAVE_FPR
+ 2;
4393 unsigned int lowest_restf
= MAX_SAVE_FPR
+ 2;
4395 struct elf_link_hash_entry
*h
;
4399 htab
= ppc_hash_table (info
);
4401 if (htab
->sfpr
== NULL
)
4402 /* We don't have any relocs. */
4405 /* First provide any missing ._savef* and ._restf* functions. */
4406 memcpy (sym
, "._savef14", 10);
4407 for (i
= MIN_SAVE_FPR
; i
<= MAX_SAVE_FPR
; i
++)
4409 sym
[7] = i
/ 10 + '0';
4410 sym
[8] = i
% 10 + '0';
4411 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
4413 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
4415 if (lowest_savef
> i
)
4417 h
->root
.type
= bfd_link_hash_defined
;
4418 h
->root
.u
.def
.section
= htab
->sfpr
;
4419 h
->root
.u
.def
.value
= (i
- lowest_savef
) * 4;
4421 h
->elf_link_hash_flags
|= ELF_LINK_HASH_DEF_REGULAR
;
4422 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
4426 memcpy (sym
, "._restf14", 10);
4427 for (i
= MIN_SAVE_FPR
; i
<= MAX_SAVE_FPR
; i
++)
4429 sym
[7] = i
/ 10 + '0';
4430 sym
[8] = i
% 10 + '0';
4431 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
4433 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
4435 if (lowest_restf
> i
)
4437 h
->root
.type
= bfd_link_hash_defined
;
4438 h
->root
.u
.def
.section
= htab
->sfpr
;
4439 h
->root
.u
.def
.value
= ((MAX_SAVE_FPR
+ 2 - lowest_savef
) * 4
4440 + (i
- lowest_restf
) * 4);
4442 h
->elf_link_hash_flags
|= ELF_LINK_HASH_DEF_REGULAR
;
4443 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
4447 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
4449 htab
->sfpr
->_raw_size
= ((MAX_SAVE_FPR
+ 2 - lowest_savef
) * 4
4450 + (MAX_SAVE_FPR
+ 2 - lowest_restf
) * 4);
4452 if (htab
->sfpr
->_raw_size
== 0)
4454 if (!htab
->have_undefweak
)
4456 _bfd_strip_section_from_output (info
, htab
->sfpr
);
4460 htab
->sfpr
->_raw_size
= 4;
4463 p
= bfd_alloc (htab
->elf
.dynobj
, htab
->sfpr
->_raw_size
);
4466 htab
->sfpr
->contents
= p
;
4468 for (i
= lowest_savef
; i
<= MAX_SAVE_FPR
; i
++)
4470 unsigned int fpr
= i
<< 21;
4471 unsigned int stackoff
= (1 << 16) - (MAX_SAVE_FPR
+ 1 - i
) * 8;
4472 bfd_put_32 (htab
->elf
.dynobj
, STFD_FR0_0R1
+ fpr
+ stackoff
, p
);
4475 if (lowest_savef
<= MAX_SAVE_FPR
)
4477 bfd_put_32 (htab
->elf
.dynobj
, BLR
, p
);
4481 for (i
= lowest_restf
; i
<= MAX_SAVE_FPR
; i
++)
4483 unsigned int fpr
= i
<< 21;
4484 unsigned int stackoff
= (1 << 16) - (MAX_SAVE_FPR
+ 1 - i
) * 8;
4485 bfd_put_32 (htab
->elf
.dynobj
, LFD_FR0_0R1
+ fpr
+ stackoff
, p
);
4488 if (lowest_restf
<= MAX_SAVE_FPR
4489 || htab
->sfpr
->_raw_size
== 4)
4491 bfd_put_32 (htab
->elf
.dynobj
, BLR
, p
);
4497 /* Adjust a symbol defined by a dynamic object and referenced by a
4498 regular object. The current definition is in some section of the
4499 dynamic object, but we're not including those sections. We have to
4500 change the definition to something the rest of the link can
4504 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4505 struct elf_link_hash_entry
*h
)
4507 struct ppc_link_hash_table
*htab
;
4509 unsigned int power_of_two
;
4511 htab
= ppc_hash_table (info
);
4513 /* Deal with function syms. */
4514 if (h
->type
== STT_FUNC
4515 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
4517 /* Clear procedure linkage table information for any symbol that
4518 won't need a .plt entry. */
4519 struct plt_entry
*ent
;
4520 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4521 if (ent
->plt
.refcount
> 0)
4523 if (!((struct ppc_link_hash_entry
*) h
)->is_func_descriptor
4525 || SYMBOL_CALLS_LOCAL (info
, h
)
4526 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
4527 && h
->root
.type
== bfd_link_hash_undefweak
))
4529 h
->plt
.plist
= NULL
;
4530 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
4534 h
->plt
.plist
= NULL
;
4536 /* If this is a weak symbol, and there is a real definition, the
4537 processor independent code will have arranged for us to see the
4538 real definition first, and we can just use the same value. */
4539 if (h
->weakdef
!= NULL
)
4541 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
4542 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
4543 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
4544 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
4545 if (ELIMINATE_COPY_RELOCS
)
4546 h
->elf_link_hash_flags
4547 = ((h
->elf_link_hash_flags
& ~ELF_LINK_NON_GOT_REF
)
4548 | (h
->weakdef
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
));
4552 /* If we are creating a shared library, we must presume that the
4553 only references to the symbol are via the global offset table.
4554 For such cases we need not do anything here; the relocations will
4555 be handled correctly by relocate_section. */
4559 /* If there are no references to this symbol that do not use the
4560 GOT, we don't need to generate a copy reloc. */
4561 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
4564 if (ELIMINATE_COPY_RELOCS
)
4566 struct ppc_link_hash_entry
* eh
;
4567 struct ppc_dyn_relocs
*p
;
4569 eh
= (struct ppc_link_hash_entry
*) h
;
4570 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
4572 s
= p
->sec
->output_section
;
4573 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
4577 /* If we didn't find any dynamic relocs in read-only sections, then
4578 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4581 h
->elf_link_hash_flags
&= ~ELF_LINK_NON_GOT_REF
;
4586 if (h
->plt
.plist
!= NULL
)
4588 /* We should never get here, but unfortunately there are versions
4589 of gcc out there that improperly (for this ABI) put initialized
4590 function pointers, vtable refs and suchlike in read-only
4591 sections. Allow them to proceed, but warn that this might
4592 break at runtime. */
4593 (*_bfd_error_handler
)
4594 (_("copy reloc against `%s' requires lazy plt linking; "
4595 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
4596 h
->root
.root
.string
);
4599 /* This is a reference to a symbol defined by a dynamic object which
4600 is not a function. */
4602 /* We must allocate the symbol in our .dynbss section, which will
4603 become part of the .bss section of the executable. There will be
4604 an entry for this symbol in the .dynsym section. The dynamic
4605 object will contain position independent code, so all references
4606 from the dynamic object to this symbol will go through the global
4607 offset table. The dynamic linker will use the .dynsym entry to
4608 determine the address it must put in the global offset table, so
4609 both the dynamic object and the regular object will refer to the
4610 same memory location for the variable. */
4612 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4613 to copy the initial value out of the dynamic object and into the
4614 runtime process image. We need to remember the offset into the
4615 .rela.bss section we are going to use. */
4616 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
4618 htab
->relbss
->_raw_size
+= sizeof (Elf64_External_Rela
);
4619 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
4622 /* We need to figure out the alignment required for this symbol. I
4623 have no idea how ELF linkers handle this. */
4624 power_of_two
= bfd_log2 (h
->size
);
4625 if (power_of_two
> 4)
4628 /* Apply the required alignment. */
4630 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
, (bfd_size_type
) (1 << power_of_two
));
4631 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
4633 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
4637 /* Define the symbol as being at this point in the section. */
4638 h
->root
.u
.def
.section
= s
;
4639 h
->root
.u
.def
.value
= s
->_raw_size
;
4641 /* Increment the section size to make room for the symbol. */
4642 s
->_raw_size
+= h
->size
;
4647 /* If given a function descriptor symbol, hide both the function code
4648 sym and the descriptor. */
4650 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
4651 struct elf_link_hash_entry
*h
,
4652 bfd_boolean force_local
)
4654 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
4656 if (((struct ppc_link_hash_entry
*) h
)->is_func_descriptor
)
4658 struct elf_link_hash_entry
*fh
= ((struct ppc_link_hash_entry
*) h
)->oh
;
4663 struct ppc_link_hash_table
*htab
;
4666 /* We aren't supposed to use alloca in BFD because on
4667 systems which do not have alloca the version in libiberty
4668 calls xmalloc, which might cause the program to crash
4669 when it runs out of memory. This function doesn't have a
4670 return status, so there's no way to gracefully return an
4671 error. So cheat. We know that string[-1] can be safely
4672 dereferenced; It's either a string in an ELF string
4673 table, or allocated in an objalloc structure. */
4675 p
= h
->root
.root
.string
- 1;
4678 htab
= ppc_hash_table (info
);
4679 fh
= elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
4682 /* Unfortunately, if it so happens that the string we were
4683 looking for was allocated immediately before this string,
4684 then we overwrote the string terminator. That's the only
4685 reason the lookup should fail. */
4688 q
= h
->root
.root
.string
+ strlen (h
->root
.root
.string
);
4689 while (q
>= h
->root
.root
.string
&& *q
== *p
)
4691 if (q
< h
->root
.root
.string
&& *p
== '.')
4692 fh
= elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
4696 ((struct ppc_link_hash_entry
*) h
)->oh
= fh
;
4697 ((struct ppc_link_hash_entry
*) fh
)->oh
= h
;
4701 _bfd_elf_link_hash_hide_symbol (info
, fh
, force_local
);
4706 get_sym_h (struct elf_link_hash_entry
**hp
, Elf_Internal_Sym
**symp
,
4707 asection
**symsecp
, char **tls_maskp
, Elf_Internal_Sym
**locsymsp
,
4708 unsigned long r_symndx
, bfd
*ibfd
)
4710 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
4712 if (r_symndx
>= symtab_hdr
->sh_info
)
4714 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
4715 struct elf_link_hash_entry
*h
;
4717 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4718 while (h
->root
.type
== bfd_link_hash_indirect
4719 || h
->root
.type
== bfd_link_hash_warning
)
4720 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4728 if (symsecp
!= NULL
)
4730 asection
*symsec
= NULL
;
4731 if (h
->root
.type
== bfd_link_hash_defined
4732 || h
->root
.type
== bfd_link_hash_defweak
)
4733 symsec
= h
->root
.u
.def
.section
;
4737 if (tls_maskp
!= NULL
)
4739 struct ppc_link_hash_entry
*eh
;
4741 eh
= (struct ppc_link_hash_entry
*) h
;
4742 *tls_maskp
= &eh
->tls_mask
;
4747 Elf_Internal_Sym
*sym
;
4748 Elf_Internal_Sym
*locsyms
= *locsymsp
;
4750 if (locsyms
== NULL
)
4752 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4753 if (locsyms
== NULL
)
4754 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
4755 symtab_hdr
->sh_info
,
4756 0, NULL
, NULL
, NULL
);
4757 if (locsyms
== NULL
)
4759 *locsymsp
= locsyms
;
4761 sym
= locsyms
+ r_symndx
;
4769 if (symsecp
!= NULL
)
4771 asection
*symsec
= NULL
;
4772 if ((sym
->st_shndx
!= SHN_UNDEF
4773 && sym
->st_shndx
< SHN_LORESERVE
)
4774 || sym
->st_shndx
> SHN_HIRESERVE
)
4775 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
4779 if (tls_maskp
!= NULL
)
4781 struct got_entry
**lgot_ents
;
4785 lgot_ents
= elf_local_got_ents (ibfd
);
4786 if (lgot_ents
!= NULL
)
4788 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
4789 tls_mask
= &lgot_masks
[r_symndx
];
4791 *tls_maskp
= tls_mask
;
4797 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
4798 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
4799 type suitable for optimization, and 1 otherwise. */
4802 get_tls_mask (char **tls_maskp
, Elf_Internal_Sym
**locsymsp
,
4803 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
4805 unsigned long r_symndx
;
4806 unsigned int next_r
;
4807 struct elf_link_hash_entry
*h
;
4808 Elf_Internal_Sym
*sym
;
4812 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4813 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
4816 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
4818 || ppc64_elf_section_data (sec
)->t_symndx
== NULL
)
4821 /* Look inside a TOC section too. */
4824 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
4825 off
= h
->root
.u
.def
.value
;
4828 off
= sym
->st_value
;
4829 off
+= rel
->r_addend
;
4830 BFD_ASSERT (off
% 8 == 0);
4831 r_symndx
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8];
4832 next_r
= ppc64_elf_section_data (sec
)->t_symndx
[off
/ 8 + 1];
4833 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
4836 || h
->root
.type
== bfd_link_hash_defined
4837 || h
->root
.type
== bfd_link_hash_defweak
)
4839 if (next_r
== (unsigned) -1)
4841 if (next_r
== (unsigned) -2
4843 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
4850 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
)
4854 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4857 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
4858 Elf_Internal_Shdr
*symtab_hdr
;
4859 Elf_Internal_Sym
*local_syms
;
4860 struct elf_link_hash_entry
**sym_hashes
;
4864 bfd_boolean need_edit
;
4866 sec
= bfd_get_section_by_name (ibfd
, ".opd");
4870 amt
= sec
->_raw_size
* sizeof (long) / 24;
4871 adjust
= ppc64_elf_section_data (sec
)->opd
.adjust
;
4874 /* Must be a ld -r link. ie. check_relocs hasn't been
4876 adjust
= bfd_zalloc (obfd
, amt
);
4877 ppc64_elf_section_data (sec
)->opd
.adjust
= adjust
;
4879 memset (adjust
, 0, amt
);
4881 if (sec
->output_section
== bfd_abs_section_ptr
)
4884 /* Look through the section relocs. */
4885 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
4889 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
4890 sym_hashes
= elf_sym_hashes (ibfd
);
4892 /* Read the relocations. */
4893 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
4895 if (relstart
== NULL
)
4898 /* First run through the relocs to check they are sane, and to
4899 determine whether we need to edit this opd section. */
4902 relend
= relstart
+ sec
->reloc_count
;
4903 for (rel
= relstart
; rel
< relend
; )
4905 enum elf_ppc64_reloc_type r_type
;
4906 unsigned long r_symndx
;
4908 struct elf_link_hash_entry
*h
;
4909 Elf_Internal_Sym
*sym
;
4911 /* .opd contains a regular array of 24 byte entries. We're
4912 only interested in the reloc pointing to a function entry
4914 if (rel
->r_offset
!= offset
4915 || rel
+ 1 >= relend
4916 || (rel
+ 1)->r_offset
!= offset
+ 8)
4918 /* If someone messes with .opd alignment then after a
4919 "ld -r" we might have padding in the middle of .opd.
4920 Also, there's nothing to prevent someone putting
4921 something silly in .opd with the assembler. No .opd
4922 optimization for them! */
4923 (*_bfd_error_handler
)
4924 (_("%s: .opd is not a regular array of opd entries"),
4925 bfd_archive_filename (ibfd
));
4930 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
4931 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
4933 (*_bfd_error_handler
)
4934 (_("%s: unexpected reloc type %u in .opd section"),
4935 bfd_archive_filename (ibfd
), r_type
);
4940 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4941 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
4945 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
4947 const char *sym_name
;
4949 sym_name
= h
->root
.root
.string
;
4951 sym_name
= bfd_elf_local_sym_name (ibfd
, sym
);
4953 (*_bfd_error_handler
)
4954 (_("%s: undefined sym `%s' in .opd section"),
4955 bfd_archive_filename (ibfd
),
4961 /* opd entries are always for functions defined in the
4962 current input bfd. If the symbol isn't defined in the
4963 input bfd, then we won't be using the function in this
4964 bfd; It must be defined in a linkonce section in another
4965 bfd, or is weak. It's also possible that we are
4966 discarding the function due to a linker script /DISCARD/,
4967 which we test for via the output_section. */
4968 if (sym_sec
->owner
!= ibfd
4969 || sym_sec
->output_section
== bfd_abs_section_ptr
)
4974 /* Allow for the possibility of a reloc on the third word. */
4976 && rel
->r_offset
== offset
- 8)
4982 Elf_Internal_Rela
*write_rel
;
4983 bfd_byte
*rptr
, *wptr
;
4986 /* This seems a waste of time as input .opd sections are all
4987 zeros as generated by gcc, but I suppose there's no reason
4988 this will always be so. We might start putting something in
4989 the third word of .opd entries. */
4990 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
4992 bfd_byte
*loc
= bfd_alloc (ibfd
, sec
->_raw_size
);
4994 || !bfd_get_section_contents (ibfd
, sec
, loc
, 0,
4998 if (local_syms
!= NULL
4999 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
5001 if (elf_section_data (sec
)->relocs
!= relstart
)
5005 sec
->contents
= loc
;
5006 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
5009 elf_section_data (sec
)->relocs
= relstart
;
5011 wptr
= sec
->contents
;
5012 rptr
= sec
->contents
;
5013 write_rel
= relstart
;
5016 for (rel
= relstart
; rel
< relend
; rel
++)
5018 unsigned long r_symndx
;
5020 struct elf_link_hash_entry
*h
;
5021 Elf_Internal_Sym
*sym
;
5023 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5024 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
5028 if (rel
->r_offset
== offset
)
5030 struct ppc_link_hash_entry
*fdh
= NULL
;
5032 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
5033 ppc_hash_table (info
));
5035 skip
= (sym_sec
->owner
!= ibfd
5036 || sym_sec
->output_section
== bfd_abs_section_ptr
);
5039 if (h
!= NULL
&& sym_sec
->owner
== ibfd
)
5041 /* Arrange for the function descriptor sym
5043 fdh
->elf
.root
.u
.def
.value
= 0;
5044 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
5049 /* We'll be keeping this opd entry. */
5053 /* Redefine the function descriptor symbol
5054 to this location in the opd section.
5055 We've checked above that opd relocs are
5057 fdh
->elf
.root
.u
.def
.value
= wptr
- sec
->contents
;
5061 /* Local syms are a bit tricky. We could
5062 tweak them as they can be cached, but
5063 we'd need to look through the local syms
5064 for the function descriptor sym which we
5065 don't have at the moment. So keep an
5066 array of adjustments. */
5067 adjust
[rel
->r_offset
/ 24] = wptr
- rptr
;
5071 memcpy (wptr
, rptr
, 24);
5080 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel
->r_info
)));
5083 /* We won't be needing dynamic relocs here. */
5084 struct ppc_dyn_relocs
**pp
;
5085 struct ppc_dyn_relocs
*p
;
5088 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5089 else if (sym_sec
!= NULL
)
5090 pp
= ((struct ppc_dyn_relocs
**)
5091 &elf_section_data (sym_sec
)->local_dynrel
);
5093 pp
= ((struct ppc_dyn_relocs
**)
5094 &elf_section_data (sec
)->local_dynrel
);
5095 while ((p
= *pp
) != NULL
)
5110 /* We need to adjust any reloc offsets to point to the
5111 new opd entries. While we're at it, we may as well
5112 remove redundant relocs. */
5113 rel
->r_offset
+= wptr
- rptr
;
5114 if (write_rel
!= rel
)
5115 memcpy (write_rel
, rel
, sizeof (*rel
));
5120 sec
->_cooked_size
= wptr
- sec
->contents
;
5121 sec
->reloc_count
= write_rel
- relstart
;
5122 /* Fudge the size too, as this is used later in
5123 elf_bfd_final_link if we are emitting relocs. */
5124 elf_section_data (sec
)->rel_hdr
.sh_size
5125 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
5126 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
5128 else if (elf_section_data (sec
)->relocs
!= relstart
)
5131 if (local_syms
!= NULL
5132 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
5134 if (!info
->keep_memory
)
5137 symtab_hdr
->contents
= (unsigned char *) local_syms
;
5144 /* Set htab->tls_sec. */
5147 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
5150 struct ppc_link_hash_table
*htab
;
5152 for (tls
= obfd
->sections
; tls
!= NULL
; tls
= tls
->next
)
5153 if ((tls
->flags
& (SEC_THREAD_LOCAL
| SEC_LOAD
))
5154 == (SEC_THREAD_LOCAL
| SEC_LOAD
))
5157 htab
= ppc_hash_table (info
);
5158 htab
->tls_sec
= tls
;
5160 if (htab
->tls_get_addr
!= NULL
)
5162 struct elf_link_hash_entry
*h
= htab
->tls_get_addr
;
5164 while (h
->root
.type
== bfd_link_hash_indirect
5165 || h
->root
.type
== bfd_link_hash_warning
)
5166 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5168 htab
->tls_get_addr
= h
;
5174 /* Run through all the TLS relocs looking for optimization
5175 opportunities. The linker has been hacked (see ppc64elf.em) to do
5176 a preliminary section layout so that we know the TLS segment
5177 offsets. We can't optimize earlier because some optimizations need
5178 to know the tp offset, and we need to optimize before allocating
5179 dynamic relocations. */
5182 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
5186 struct ppc_link_hash_table
*htab
;
5188 if (info
->relocatable
|| info
->shared
)
5191 htab
= ppc_hash_table (info
);
5192 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5194 Elf_Internal_Sym
*locsyms
= NULL
;
5196 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5197 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
5199 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
5200 int expecting_tls_get_addr
;
5202 /* Read the relocations. */
5203 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
5205 if (relstart
== NULL
)
5208 expecting_tls_get_addr
= 0;
5209 relend
= relstart
+ sec
->reloc_count
;
5210 for (rel
= relstart
; rel
< relend
; rel
++)
5212 enum elf_ppc64_reloc_type r_type
;
5213 unsigned long r_symndx
;
5214 struct elf_link_hash_entry
*h
;
5215 Elf_Internal_Sym
*sym
;
5218 char tls_set
, tls_clear
, tls_type
= 0;
5220 bfd_boolean ok_tprel
, is_local
;
5222 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5223 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
5227 if (elf_section_data (sec
)->relocs
!= relstart
)
5230 && (elf_tdata (ibfd
)->symtab_hdr
.contents
5231 != (unsigned char *) locsyms
))
5238 if (h
->root
.type
!= bfd_link_hash_defined
5239 && h
->root
.type
!= bfd_link_hash_defweak
)
5241 value
= h
->root
.u
.def
.value
;
5244 value
= sym
->st_value
;
5249 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
5252 value
+= sym_sec
->output_offset
;
5253 value
+= sym_sec
->output_section
->vma
;
5254 value
-= htab
->tls_sec
->vma
;
5255 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
5256 < (bfd_vma
) 1 << 32);
5259 r_type
= ELF64_R_TYPE (rel
->r_info
);
5262 case R_PPC64_GOT_TLSLD16
:
5263 case R_PPC64_GOT_TLSLD16_LO
:
5264 case R_PPC64_GOT_TLSLD16_HI
:
5265 case R_PPC64_GOT_TLSLD16_HA
:
5266 /* These relocs should never be against a symbol
5267 defined in a shared lib. Leave them alone if
5268 that turns out to be the case. */
5269 ppc64_tlsld_got (ibfd
)->refcount
-= 1;
5276 tls_type
= TLS_TLS
| TLS_LD
;
5277 expecting_tls_get_addr
= 1;
5280 case R_PPC64_GOT_TLSGD16
:
5281 case R_PPC64_GOT_TLSGD16_LO
:
5282 case R_PPC64_GOT_TLSGD16_HI
:
5283 case R_PPC64_GOT_TLSGD16_HA
:
5289 tls_set
= TLS_TLS
| TLS_TPRELGD
;
5291 tls_type
= TLS_TLS
| TLS_GD
;
5292 expecting_tls_get_addr
= 1;
5295 case R_PPC64_GOT_TPREL16_DS
:
5296 case R_PPC64_GOT_TPREL16_LO_DS
:
5297 case R_PPC64_GOT_TPREL16_HI
:
5298 case R_PPC64_GOT_TPREL16_HA
:
5299 expecting_tls_get_addr
= 0;
5304 tls_clear
= TLS_TPREL
;
5305 tls_type
= TLS_TLS
| TLS_TPREL
;
5312 case R_PPC64_REL14_BRTAKEN
:
5313 case R_PPC64_REL14_BRNTAKEN
:
5316 && h
== htab
->tls_get_addr
)
5318 if (!expecting_tls_get_addr
5320 && ((ELF64_R_TYPE (rel
[-1].r_info
)
5322 || (ELF64_R_TYPE (rel
[-1].r_info
)
5323 == R_PPC64_TOC16_LO
)))
5325 /* Check for toc tls entries. */
5329 retval
= get_tls_mask (&toc_tls
, &locsyms
,
5333 if (toc_tls
!= NULL
)
5334 expecting_tls_get_addr
= retval
> 1;
5337 if (expecting_tls_get_addr
)
5339 struct plt_entry
*ent
;
5340 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
5341 if (ent
->addend
== 0)
5343 if (ent
->plt
.refcount
> 0)
5344 ent
->plt
.refcount
-= 1;
5349 expecting_tls_get_addr
= 0;
5352 case R_PPC64_TPREL64
:
5353 expecting_tls_get_addr
= 0;
5357 tls_set
= TLS_EXPLICIT
;
5358 tls_clear
= TLS_TPREL
;
5364 case R_PPC64_DTPMOD64
:
5365 expecting_tls_get_addr
= 0;
5366 if (rel
+ 1 < relend
5368 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
5369 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5373 tls_set
= TLS_EXPLICIT
| TLS_GD
;
5376 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
5385 tls_set
= TLS_EXPLICIT
;
5391 expecting_tls_get_addr
= 0;
5395 if ((tls_set
& TLS_EXPLICIT
) == 0)
5397 struct got_entry
*ent
;
5399 /* Adjust got entry for this reloc. */
5403 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
5405 for (; ent
!= NULL
; ent
= ent
->next
)
5406 if (ent
->addend
== rel
->r_addend
5407 && ent
->owner
== ibfd
5408 && ent
->tls_type
== tls_type
)
5415 /* We managed to get rid of a got entry. */
5416 if (ent
->got
.refcount
> 0)
5417 ent
->got
.refcount
-= 1;
5422 struct ppc_link_hash_entry
* eh
;
5423 struct ppc_dyn_relocs
**pp
;
5424 struct ppc_dyn_relocs
*p
;
5426 /* Adjust dynamic relocs. */
5427 eh
= (struct ppc_link_hash_entry
*) h
;
5428 for (pp
= &eh
->dyn_relocs
;
5433 /* If we got rid of a DTPMOD/DTPREL reloc
5434 pair then we'll lose one or two dyn
5436 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
5445 *tls_mask
|= tls_set
;
5446 *tls_mask
&= ~tls_clear
;
5449 if (elf_section_data (sec
)->relocs
!= relstart
)
5454 && (elf_tdata (ibfd
)->symtab_hdr
.contents
5455 != (unsigned char *) locsyms
))
5457 if (!info
->keep_memory
)
5460 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
5466 /* This is the condition under which ppc64_elf_finish_dynamic_symbol
5467 will be called from elflink.h. If elflink.h doesn't call our
5468 finish_dynamic_symbol routine, we'll need to do something about
5469 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
5470 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
5473 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
5474 && ((H)->dynindx != -1 \
5475 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5477 /* Allocate space in .plt, .got and associated reloc sections for
5481 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5483 struct bfd_link_info
*info
;
5484 struct ppc_link_hash_table
*htab
;
5486 struct ppc_link_hash_entry
*eh
;
5487 struct ppc_dyn_relocs
*p
;
5488 struct got_entry
*gent
;
5490 if (h
->root
.type
== bfd_link_hash_indirect
)
5493 if (h
->root
.type
== bfd_link_hash_warning
)
5494 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5496 info
= (struct bfd_link_info
*) inf
;
5497 htab
= ppc_hash_table (info
);
5499 if (htab
->elf
.dynamic_sections_created
5501 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
5503 struct plt_entry
*pent
;
5504 bfd_boolean doneone
= FALSE
;
5505 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
5506 if (pent
->plt
.refcount
> 0)
5508 BFD_ASSERT (((struct ppc_link_hash_entry
*) h
)->is_func_descriptor
);
5510 /* If this is the first .plt entry, make room for the special
5513 if (s
->_raw_size
== 0)
5514 s
->_raw_size
+= PLT_INITIAL_ENTRY_SIZE
;
5516 pent
->plt
.offset
= s
->_raw_size
;
5518 /* Make room for this entry. */
5519 s
->_raw_size
+= PLT_ENTRY_SIZE
;
5521 /* Make room for the .glink code. */
5523 if (s
->_raw_size
== 0)
5524 s
->_raw_size
+= GLINK_CALL_STUB_SIZE
;
5525 /* We need bigger stubs past index 32767. */
5526 if (s
->_raw_size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
5528 s
->_raw_size
+= 2*4;
5530 /* We also need to make an entry in the .rela.plt section. */
5532 s
->_raw_size
+= sizeof (Elf64_External_Rela
);
5536 pent
->plt
.offset
= (bfd_vma
) -1;
5539 h
->plt
.plist
= NULL
;
5540 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
5545 h
->plt
.plist
= NULL
;
5546 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
5549 eh
= (struct ppc_link_hash_entry
*) h
;
5550 /* Run through the TLS GD got entries first if we're changing them
5552 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
5553 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
5554 if (gent
->got
.refcount
> 0
5555 && (gent
->tls_type
& TLS_GD
) != 0)
5557 /* This was a GD entry that has been converted to TPREL. If
5558 there happens to be a TPREL entry we can use that one. */
5559 struct got_entry
*ent
;
5560 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5561 if (ent
->got
.refcount
> 0
5562 && (ent
->tls_type
& TLS_TPREL
) != 0
5563 && ent
->addend
== gent
->addend
5564 && ent
->owner
== gent
->owner
)
5566 gent
->got
.refcount
= 0;
5570 /* If not, then we'll be using our own TPREL entry. */
5571 if (gent
->got
.refcount
!= 0)
5572 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
5575 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
5576 if (gent
->got
.refcount
> 0)
5580 /* Make sure this symbol is output as a dynamic symbol.
5581 Undefined weak syms won't yet be marked as dynamic,
5582 nor will all TLS symbols. */
5583 if (h
->dynindx
== -1
5584 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
5586 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
5590 if ((gent
->tls_type
& TLS_LD
) != 0
5591 && !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
5593 gent
->got
.offset
= ppc64_tlsld_got (gent
->owner
)->offset
;
5597 s
= ppc64_elf_tdata (gent
->owner
)->got
;
5598 gent
->got
.offset
= s
->_raw_size
;
5600 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
5601 dyn
= htab
->elf
.dynamic_sections_created
;
5603 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
5604 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5605 || h
->root
.type
!= bfd_link_hash_undefweak
))
5606 ppc64_elf_tdata (gent
->owner
)->relgot
->_raw_size
5607 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
5608 ? 2 * sizeof (Elf64_External_Rela
)
5609 : sizeof (Elf64_External_Rela
));
5612 gent
->got
.offset
= (bfd_vma
) -1;
5614 if (eh
->dyn_relocs
== NULL
)
5617 /* In the shared -Bsymbolic case, discard space allocated for
5618 dynamic pc-relative relocs against symbols which turn out to be
5619 defined in regular objects. For the normal shared case, discard
5620 space for relocs that have become local due to symbol visibility
5625 /* Relocs that use pc_count are those that appear on a call insn,
5626 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
5627 generated via assembly. We want calls to protected symbols to
5628 resolve directly to the function rather than going via the plt.
5629 If people want function pointer comparisons to work as expected
5630 then they should avoid writing weird assembly. */
5631 if (SYMBOL_CALLS_LOCAL (info
, h
))
5633 struct ppc_dyn_relocs
**pp
;
5635 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
5637 p
->count
-= p
->pc_count
;
5646 /* Also discard relocs on undefined weak syms with non-default
5648 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5649 && h
->root
.type
== bfd_link_hash_undefweak
)
5650 eh
->dyn_relocs
= NULL
;
5652 else if (ELIMINATE_COPY_RELOCS
)
5654 /* For the non-shared case, discard space for relocs against
5655 symbols which turn out to need copy relocs or are not
5658 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
5659 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
5660 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
5662 /* Make sure this symbol is output as a dynamic symbol.
5663 Undefined weak syms won't yet be marked as dynamic. */
5664 if (h
->dynindx
== -1
5665 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
5667 if (! bfd_elf64_link_record_dynamic_symbol (info
, h
))
5671 /* If that succeeded, we know we'll be keeping all the
5673 if (h
->dynindx
!= -1)
5677 eh
->dyn_relocs
= NULL
;
5682 /* Finally, allocate space. */
5683 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5685 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
5686 sreloc
->_raw_size
+= p
->count
* sizeof (Elf64_External_Rela
);
5692 /* Find any dynamic relocs that apply to read-only sections. */
5695 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
5697 struct ppc_link_hash_entry
*eh
;
5698 struct ppc_dyn_relocs
*p
;
5700 if (h
->root
.type
== bfd_link_hash_warning
)
5701 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5703 eh
= (struct ppc_link_hash_entry
*) h
;
5704 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5706 asection
*s
= p
->sec
->output_section
;
5708 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5710 struct bfd_link_info
*info
= inf
;
5712 info
->flags
|= DF_TEXTREL
;
5714 /* Not an error, just cut short the traversal. */
5721 /* Set the sizes of the dynamic sections. */
5724 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
5725 struct bfd_link_info
*info
)
5727 struct ppc_link_hash_table
*htab
;
5733 htab
= ppc_hash_table (info
);
5734 dynobj
= htab
->elf
.dynobj
;
5738 if (htab
->elf
.dynamic_sections_created
)
5740 /* Set the contents of the .interp section to the interpreter. */
5741 if (info
->executable
)
5743 s
= bfd_get_section_by_name (dynobj
, ".interp");
5746 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
5747 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
5751 /* Set up .got offsets for local syms, and space for local dynamic
5753 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5755 struct got_entry
**lgot_ents
;
5756 struct got_entry
**end_lgot_ents
;
5758 bfd_size_type locsymcount
;
5759 Elf_Internal_Shdr
*symtab_hdr
;
5762 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
5765 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
5767 s
= ppc64_elf_tdata (ibfd
)->got
;
5768 ppc64_tlsld_got (ibfd
)->offset
= s
->_raw_size
;
5772 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
5773 srel
->_raw_size
+= sizeof (Elf64_External_Rela
);
5777 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
5779 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
5781 struct ppc_dyn_relocs
*p
;
5783 for (p
= *((struct ppc_dyn_relocs
**)
5784 &elf_section_data (s
)->local_dynrel
);
5788 if (!bfd_is_abs_section (p
->sec
)
5789 && bfd_is_abs_section (p
->sec
->output_section
))
5791 /* Input section has been discarded, either because
5792 it is a copy of a linkonce section or due to
5793 linker script /DISCARD/, so we'll be discarding
5796 else if (p
->count
!= 0)
5798 srel
= elf_section_data (p
->sec
)->sreloc
;
5799 srel
->_raw_size
+= p
->count
* sizeof (Elf64_External_Rela
);
5800 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
5801 info
->flags
|= DF_TEXTREL
;
5806 lgot_ents
= elf_local_got_ents (ibfd
);
5810 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
5811 locsymcount
= symtab_hdr
->sh_info
;
5812 end_lgot_ents
= lgot_ents
+ locsymcount
;
5813 lgot_masks
= (char *) end_lgot_ents
;
5814 s
= ppc64_elf_tdata (ibfd
)->got
;
5815 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
5816 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
5818 struct got_entry
*ent
;
5820 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
5821 if (ent
->got
.refcount
> 0)
5823 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
5825 if (ppc64_tlsld_got (ibfd
)->offset
== (bfd_vma
) -1)
5827 ppc64_tlsld_got (ibfd
)->offset
= s
->_raw_size
;
5830 srel
->_raw_size
+= sizeof (Elf64_External_Rela
);
5832 ent
->got
.offset
= ppc64_tlsld_got (ibfd
)->offset
;
5836 ent
->got
.offset
= s
->_raw_size
;
5837 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
5841 srel
->_raw_size
+= 2 * sizeof (Elf64_External_Rela
);
5847 srel
->_raw_size
+= sizeof (Elf64_External_Rela
);
5852 ent
->got
.offset
= (bfd_vma
) -1;
5856 /* Allocate global sym .plt and .got entries, and space for global
5857 sym dynamic relocs. */
5858 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
5860 /* We now have determined the sizes of the various dynamic sections.
5861 Allocate memory for them. */
5863 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5865 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5868 /* Reset _cooked_size since prelim layout will set it wrongly,
5869 and a non-zero _cooked_size sticks. */
5870 s
->_cooked_size
= 0;
5872 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
5873 /* These haven't been allocated yet; don't strip. */
5875 else if (s
== htab
->got
5877 || s
== htab
->glink
)
5879 /* Strip this section if we don't need it; see the
5882 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
5884 if (s
->_raw_size
== 0)
5886 /* If we don't need this section, strip it from the
5887 output file. This is mostly to handle .rela.bss and
5888 .rela.plt. We must create both sections in
5889 create_dynamic_sections, because they must be created
5890 before the linker maps input sections to output
5891 sections. The linker does that before
5892 adjust_dynamic_symbol is called, and it is that
5893 function which decides whether anything needs to go
5894 into these sections. */
5898 if (s
!= htab
->relplt
)
5901 /* We use the reloc_count field as a counter if we need
5902 to copy relocs into the output file. */
5908 /* It's not one of our sections, so don't allocate space. */
5912 if (s
->_raw_size
== 0)
5914 _bfd_strip_section_from_output (info
, s
);
5918 /* .plt is in the bss section. We don't initialise it. */
5919 if ((s
->flags
& SEC_LOAD
) == 0)
5922 /* Allocate memory for the section contents. We use bfd_zalloc
5923 here in case unused entries are not reclaimed before the
5924 section's contents are written out. This should not happen,
5925 but this way if it does we get a R_PPC64_NONE reloc in .rela
5926 sections instead of garbage.
5927 We also rely on the section contents being zero when writing
5929 s
->contents
= bfd_zalloc (dynobj
, s
->_raw_size
);
5930 if (s
->contents
== NULL
)
5934 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
5936 s
= ppc64_elf_tdata (ibfd
)->got
;
5937 if (s
!= NULL
&& s
!= htab
->got
)
5939 s
->_cooked_size
= 0;
5940 if (s
->_raw_size
== 0)
5941 _bfd_strip_section_from_output (info
, s
);
5944 s
->contents
= bfd_zalloc (ibfd
, s
->_raw_size
);
5945 if (s
->contents
== NULL
)
5949 s
= ppc64_elf_tdata (ibfd
)->relgot
;
5952 s
->_cooked_size
= 0;
5953 if (s
->_raw_size
== 0)
5954 _bfd_strip_section_from_output (info
, s
);
5957 s
->contents
= bfd_zalloc (ibfd
, s
->_raw_size
);
5958 if (s
->contents
== NULL
)
5966 if (htab
->elf
.dynamic_sections_created
)
5968 /* Add some entries to the .dynamic section. We fill in the
5969 values later, in ppc64_elf_finish_dynamic_sections, but we
5970 must add the entries now so that we get the correct size for
5971 the .dynamic section. The DT_DEBUG entry is filled in by the
5972 dynamic linker and used by the debugger. */
5973 #define add_dynamic_entry(TAG, VAL) \
5974 bfd_elf64_add_dynamic_entry (info, (TAG), (VAL))
5976 if (info
->executable
)
5978 if (!add_dynamic_entry (DT_DEBUG
, 0))
5982 if (htab
->plt
!= NULL
&& htab
->plt
->_raw_size
!= 0)
5984 if (!add_dynamic_entry (DT_PLTGOT
, 0)
5985 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
5986 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
5987 || !add_dynamic_entry (DT_JMPREL
, 0)
5988 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
5994 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
5995 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
6001 if (!add_dynamic_entry (DT_RELA
, 0)
6002 || !add_dynamic_entry (DT_RELASZ
, 0)
6003 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
6006 /* If any dynamic relocs apply to a read-only section,
6007 then we need a DT_TEXTREL entry. */
6008 if ((info
->flags
& DF_TEXTREL
) == 0)
6009 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
6011 if ((info
->flags
& DF_TEXTREL
) != 0)
6013 if (!add_dynamic_entry (DT_TEXTREL
, 0))
6018 #undef add_dynamic_entry
6023 /* Determine the type of stub needed, if any, for a call. */
6025 static inline enum ppc_stub_type
6026 ppc_type_of_stub (asection
*input_sec
,
6027 const Elf_Internal_Rela
*rel
,
6028 struct ppc_link_hash_entry
**hash
,
6029 bfd_vma destination
)
6031 struct ppc_link_hash_entry
*h
= *hash
;
6033 bfd_vma branch_offset
;
6034 bfd_vma max_branch_offset
;
6035 enum elf_ppc64_reloc_type r_type
;
6040 && h
->oh
->dynindx
!= -1)
6042 struct plt_entry
*ent
;
6043 for (ent
= h
->oh
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6044 if (ent
->addend
== rel
->r_addend
6045 && ent
->plt
.offset
!= (bfd_vma
) -1)
6047 *hash
= (struct ppc_link_hash_entry
*) h
->oh
;
6048 return ppc_stub_plt_call
;
6052 if (h
->elf
.root
.type
!= bfd_link_hash_defined
6053 && h
->elf
.root
.type
!= bfd_link_hash_defweak
)
6054 return ppc_stub_none
;
6057 /* Determine where the call point is. */
6058 location
= (input_sec
->output_offset
6059 + input_sec
->output_section
->vma
6062 branch_offset
= destination
- location
;
6063 r_type
= ELF64_R_TYPE (rel
->r_info
);
6065 /* Determine if a long branch stub is needed. */
6066 max_branch_offset
= 1 << 25;
6067 if (r_type
!= R_PPC64_REL24
)
6068 max_branch_offset
= 1 << 15;
6070 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
6071 /* We need a stub. Figure out whether a long_branch or plt_branch
6073 return ppc_stub_long_branch
;
6075 return ppc_stub_none
;
6078 /* Build a .plt call stub. */
6080 static inline bfd_byte
*
6081 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
6083 #define PPC_LO(v) ((v) & 0xffff)
6084 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6085 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6087 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
6088 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
6089 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
6090 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
6091 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
6093 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
6094 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
6095 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
6097 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
6098 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
6099 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
6104 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
6106 struct ppc_stub_hash_entry
*stub_entry
;
6107 struct ppc_branch_hash_entry
*br_entry
;
6108 struct bfd_link_info
*info
;
6109 struct ppc_link_hash_table
*htab
;
6113 struct plt_entry
*ent
;
6117 /* Massage our args to the form they really have. */
6118 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
6121 htab
= ppc_hash_table (info
);
6123 /* Make a note of the offset within the stubs for this entry. */
6124 stub_entry
->stub_offset
= stub_entry
->stub_sec
->_cooked_size
;
6125 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
6127 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
6128 switch (stub_entry
->stub_type
)
6130 case ppc_stub_long_branch
:
6131 case ppc_stub_long_branch_r2off
:
6132 /* Branches are relative. This is where we are going to. */
6133 off
= (stub_entry
->target_value
6134 + stub_entry
->target_section
->output_offset
6135 + stub_entry
->target_section
->output_section
->vma
);
6137 /* And this is where we are coming from. */
6138 off
-= (stub_entry
->stub_offset
6139 + stub_entry
->stub_sec
->output_offset
6140 + stub_entry
->stub_sec
->output_section
->vma
);
6142 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
6148 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
6149 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6150 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
6152 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
6154 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
6159 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
6161 BFD_ASSERT (off
+ (1 << 25) < (bfd_vma
) (1 << 26));
6164 case ppc_stub_plt_branch
:
6165 case ppc_stub_plt_branch_r2off
:
6166 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
6167 stub_entry
->root
.string
+ 9,
6169 if (br_entry
== NULL
)
6171 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
6172 stub_entry
->root
.string
+ 9);
6173 htab
->stub_error
= TRUE
;
6177 off
= (stub_entry
->target_value
6178 + stub_entry
->target_section
->output_offset
6179 + stub_entry
->target_section
->output_section
->vma
);
6181 bfd_put_64 (htab
->brlt
->owner
, off
,
6182 htab
->brlt
->contents
+ br_entry
->offset
);
6186 /* Create a reloc for the branch lookup table entry. */
6187 Elf_Internal_Rela rela
;
6190 rela
.r_offset
= (br_entry
->offset
6191 + htab
->brlt
->output_offset
6192 + htab
->brlt
->output_section
->vma
);
6193 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
6194 rela
.r_addend
= off
;
6196 rl
= htab
->relbrlt
->contents
;
6197 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
6198 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
6201 off
= (br_entry
->offset
6202 + htab
->brlt
->output_offset
6203 + htab
->brlt
->output_section
->vma
6204 - elf_gp (htab
->brlt
->output_section
->owner
)
6205 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6207 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
6209 (*_bfd_error_handler
)
6210 (_("linkage table error against `%s'"),
6211 stub_entry
->root
.string
);
6212 bfd_set_error (bfd_error_bad_value
);
6213 htab
->stub_error
= TRUE
;
6218 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
6220 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
6222 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
6229 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
6230 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6231 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
6233 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
6235 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
6237 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
6239 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
6243 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
6245 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
6248 case ppc_stub_plt_call
:
6249 /* Do the best we can for shared libraries built without
6250 exporting ".foo" for each "foo". This can happen when symbol
6251 versioning scripts strip all bar a subset of symbols. */
6252 if (stub_entry
->h
->oh
->root
.type
!= bfd_link_hash_defined
6253 && stub_entry
->h
->oh
->root
.type
!= bfd_link_hash_defweak
)
6255 /* Point the symbol at the stub. There may be multiple stubs,
6256 we don't really care; The main thing is to make this sym
6257 defined somewhere. Maybe defining the symbol in the stub
6258 section is a silly idea. If we didn't do this, htab->top_id
6260 stub_entry
->h
->oh
->root
.type
= bfd_link_hash_defined
;
6261 stub_entry
->h
->oh
->root
.u
.def
.section
= stub_entry
->stub_sec
;
6262 stub_entry
->h
->oh
->root
.u
.def
.value
= stub_entry
->stub_offset
;
6265 /* Now build the stub. */
6267 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6268 if (ent
->addend
== stub_entry
->addend
)
6270 off
= ent
->plt
.offset
;
6273 if (off
>= (bfd_vma
) -2)
6276 off
&= ~ (bfd_vma
) 1;
6277 off
+= (htab
->plt
->output_offset
6278 + htab
->plt
->output_section
->vma
6279 - elf_gp (htab
->plt
->output_section
->owner
)
6280 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6282 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
6284 (*_bfd_error_handler
)
6285 (_("linkage table error against `%s'"),
6286 stub_entry
->h
->elf
.root
.root
.string
);
6287 bfd_set_error (bfd_error_bad_value
);
6288 htab
->stub_error
= TRUE
;
6292 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
);
6301 stub_entry
->stub_sec
->_cooked_size
+= size
;
6303 if (htab
->emit_stub_syms
6304 && !(stub_entry
->stub_type
== ppc_stub_plt_call
6305 && stub_entry
->h
->oh
->root
.type
== bfd_link_hash_defined
6306 && stub_entry
->h
->oh
->root
.u
.def
.section
== stub_entry
->stub_sec
6307 && stub_entry
->h
->oh
->root
.u
.def
.value
== stub_entry
->stub_offset
))
6309 struct elf_link_hash_entry
*h
;
6310 h
= elf_link_hash_lookup (&htab
->elf
, stub_entry
->root
.string
,
6311 TRUE
, FALSE
, FALSE
);
6314 if (h
->root
.type
== bfd_link_hash_new
)
6316 h
->root
.type
= bfd_link_hash_defined
;
6317 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
6318 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
6319 h
->elf_link_hash_flags
= (ELF_LINK_HASH_REF_REGULAR
6320 | ELF_LINK_HASH_DEF_REGULAR
6321 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
6322 | ELF_LINK_FORCED_LOCAL
);
6329 /* As above, but don't actually build the stub. Just bump offset so
6330 we know stub section sizes, and select plt_branch stubs where
6331 long_branch stubs won't do. */
6334 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
6336 struct ppc_stub_hash_entry
*stub_entry
;
6337 struct ppc_link_hash_table
*htab
;
6341 /* Massage our args to the form they really have. */
6342 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
6345 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
6347 struct plt_entry
*ent
;
6349 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6350 if (ent
->addend
== stub_entry
->addend
)
6352 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
6355 if (off
>= (bfd_vma
) -2)
6357 off
+= (htab
->plt
->output_offset
6358 + htab
->plt
->output_section
->vma
6359 - elf_gp (htab
->plt
->output_section
->owner
)
6360 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
6362 size
= PLT_CALL_STUB_SIZE
;
6363 if (PPC_HA (off
+ 16) != PPC_HA (off
))
6368 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
6370 off
= (stub_entry
->target_value
6371 + stub_entry
->target_section
->output_offset
6372 + stub_entry
->target_section
->output_section
->vma
);
6373 off
-= (stub_entry
->stub_sec
->_raw_size
6374 + stub_entry
->stub_sec
->output_offset
6375 + stub_entry
->stub_sec
->output_section
->vma
);
6377 /* Reset the stub type from the plt variant in case we now
6378 can reach with a shorter stub. */
6379 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
6380 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
6383 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
6389 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
6390 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
6392 struct ppc_branch_hash_entry
*br_entry
;
6394 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
6395 stub_entry
->root
.string
+ 9,
6397 if (br_entry
== NULL
)
6399 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
6400 stub_entry
->root
.string
+ 9);
6401 htab
->stub_error
= TRUE
;
6405 if (br_entry
->iter
!= htab
->stub_iteration
)
6407 br_entry
->iter
= htab
->stub_iteration
;
6408 br_entry
->offset
= htab
->brlt
->_raw_size
;
6409 htab
->brlt
->_raw_size
+= 8;
6412 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
6414 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
6419 stub_entry
->stub_sec
->_raw_size
+= size
;
6423 /* Set up various things so that we can make a list of input sections
6424 for each output section included in the link. Returns -1 on error,
6425 0 when no stubs will be needed, and 1 on success. */
6428 ppc64_elf_setup_section_lists (bfd
*output_bfd
, struct bfd_link_info
*info
)
6431 int top_id
, top_index
, id
;
6433 asection
**input_list
;
6435 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6437 if (htab
->brlt
== NULL
)
6440 /* Find the top input section id. */
6441 for (input_bfd
= info
->input_bfds
, top_id
= 3;
6443 input_bfd
= input_bfd
->link_next
)
6445 for (section
= input_bfd
->sections
;
6447 section
= section
->next
)
6449 if (top_id
< section
->id
)
6450 top_id
= section
->id
;
6454 htab
->top_id
= top_id
;
6455 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
6456 htab
->stub_group
= bfd_zmalloc (amt
);
6457 if (htab
->stub_group
== NULL
)
6460 /* Set toc_off for com, und, abs and ind sections. */
6461 for (id
= 0; id
< 3; id
++)
6462 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
6464 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
6466 /* We can't use output_bfd->section_count here to find the top output
6467 section index as some sections may have been removed, and
6468 _bfd_strip_section_from_output doesn't renumber the indices. */
6469 for (section
= output_bfd
->sections
, top_index
= 0;
6471 section
= section
->next
)
6473 if (top_index
< section
->index
)
6474 top_index
= section
->index
;
6477 htab
->top_index
= top_index
;
6478 amt
= sizeof (asection
*) * (top_index
+ 1);
6479 input_list
= bfd_zmalloc (amt
);
6480 htab
->input_list
= input_list
;
6481 if (input_list
== NULL
)
6487 /* The linker repeatedly calls this function for each TOC input section
6488 and linker generated GOT section. Group input bfds such that the toc
6489 within a group is less than 64k in size. Will break with cute linker
6490 scripts that play games with dot in the output toc section. */
6493 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
6495 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6497 if (!htab
->no_multi_toc
)
6499 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
6500 bfd_vma off
= addr
- htab
->toc_curr
;
6501 if (off
+ isec
->_raw_size
> 0x10000)
6503 htab
->toc_curr
= addr
;
6504 htab
->multi_toc_needed
= 1;
6506 elf_gp (isec
->owner
) = (htab
->toc_curr
6507 - elf_gp (isec
->output_section
->owner
)
6512 /* Called after the last call to the above function. */
6515 ppc64_elf_reinit_toc (bfd
*output_bfd ATTRIBUTE_UNUSED
,
6516 struct bfd_link_info
*info
)
6518 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6520 /* toc_curr tracks the TOC offset used for code sections below in
6521 ppc64_elf_next_input_section. Start off at 0x8000. */
6522 htab
->toc_curr
= TOC_BASE_OFF
;
6525 /* No toc references were found in ISEC. If the code in ISEC makes no
6526 calls, then there's no need to use toc adjusting stubs when branching
6527 into ISEC. Actually, indirect calls from ISEC are OK as they will
6531 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
6538 /* We know none of our code bearing sections will need toc stubs. */
6539 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
6542 /* Hack for linux kernel. .fixup contains branches, but only back to
6543 the function that hit an exception. */
6544 branch_ok
= strcmp (isec
->name
, ".fixup") == 0;
6546 contents
= elf_section_data (isec
)->this_hdr
.contents
;
6547 if (contents
== NULL
)
6549 contents
= bfd_malloc (isec
->_raw_size
);
6550 if (contents
== NULL
)
6552 if (! bfd_get_section_contents (isec
->owner
, isec
, contents
,
6553 0, isec
->_raw_size
))
6558 if (info
->keep_memory
)
6559 elf_section_data (isec
)->this_hdr
.contents
= contents
;
6562 /* Code scan, because we don't necessarily have relocs on calls to
6563 static functions. */
6565 for (i
= 0; i
< isec
->_raw_size
; i
+= 4)
6567 unsigned long insn
= bfd_get_32 (isec
->owner
, contents
+ i
);
6568 /* Is this a branch? */
6569 if ((insn
& (0x3f << 26)) == (18 << 26)
6570 /* If branch and link, it's a function call. */
6572 /* Sibling calls use a plain branch. I don't know a way
6573 of deciding whether a branch is really a sibling call. */
6581 if (elf_section_data (isec
)->this_hdr
.contents
!= contents
)
6586 /* The linker repeatedly calls this function for each input section,
6587 in the order that input sections are linked into output sections.
6588 Build lists of input sections to determine groupings between which
6589 we may insert linker stubs. */
6592 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
6594 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6597 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
6598 && isec
->output_section
->index
<= htab
->top_index
)
6600 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
6601 /* Steal the link_sec pointer for our list. */
6602 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
6603 /* This happens to make the list in reverse order,
6604 which is what we want. */
6605 PREV_SEC (isec
) = *list
;
6609 /* If a code section has a function that uses the TOC then we need
6610 to use the right TOC (obviously). Also, make sure that .opd gets
6611 the correct TOC value for R_PPC64_TOC relocs that don't have or
6612 can't find their function symbol (shouldn't ever happen now). */
6613 if (isec
->has_gp_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
6615 if (elf_gp (isec
->owner
) != 0)
6616 htab
->toc_curr
= elf_gp (isec
->owner
);
6618 else if ((ret
= toc_adjusting_stub_needed (info
, isec
)) < 0)
6621 isec
->has_gp_reloc
= ret
;
6623 /* Functions that don't use the TOC can belong in any TOC group.
6624 Use the last TOC base. This happens to make _init and _fini
6626 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
6630 /* See whether we can group stub sections together. Grouping stub
6631 sections may result in fewer stubs. More importantly, we need to
6632 put all .init* and .fini* stubs at the beginning of the .init or
6633 .fini output sections respectively, because glibc splits the
6634 _init and _fini functions into multiple parts. Putting a stub in
6635 the middle of a function is not a good idea. */
6638 group_sections (struct ppc_link_hash_table
*htab
,
6639 bfd_size_type stub_group_size
,
6640 bfd_boolean stubs_always_before_branch
)
6642 asection
**list
= htab
->input_list
+ htab
->top_index
;
6645 asection
*tail
= *list
;
6646 while (tail
!= NULL
)
6650 bfd_size_type total
;
6651 bfd_boolean big_sec
;
6655 if (tail
->_cooked_size
)
6656 total
= tail
->_cooked_size
;
6658 total
= tail
->_raw_size
;
6659 big_sec
= total
>= stub_group_size
;
6660 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
6662 while ((prev
= PREV_SEC (curr
)) != NULL
6663 && ((total
+= curr
->output_offset
- prev
->output_offset
)
6665 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
6668 /* OK, the size from the start of CURR to the end is less
6669 than stub_group_size and thus can be handled by one stub
6670 section. (or the tail section is itself larger than
6671 stub_group_size, in which case we may be toast.) We
6672 should really be keeping track of the total size of stubs
6673 added here, as stubs contribute to the final output
6674 section size. That's a little tricky, and this way will
6675 only break if stubs added make the total size more than
6676 2^25, ie. for the default stub_group_size, if stubs total
6677 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6680 prev
= PREV_SEC (tail
);
6681 /* Set up this stub group. */
6682 htab
->stub_group
[tail
->id
].link_sec
= curr
;
6684 while (tail
!= curr
&& (tail
= prev
) != NULL
);
6686 /* But wait, there's more! Input sections up to stub_group_size
6687 bytes before the stub section can be handled by it too.
6688 Don't do this if we have a really large section after the
6689 stubs, as adding more stubs increases the chance that
6690 branches may not reach into the stub section. */
6691 if (!stubs_always_before_branch
&& !big_sec
)
6695 && ((total
+= tail
->output_offset
- prev
->output_offset
)
6697 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
6700 prev
= PREV_SEC (tail
);
6701 htab
->stub_group
[tail
->id
].link_sec
= curr
;
6707 while (list
-- != htab
->input_list
);
6708 free (htab
->input_list
);
6712 /* Determine and set the size of the stub section for a final link.
6714 The basic idea here is to examine all the relocations looking for
6715 PC-relative calls to a target that is unreachable with a "bl"
6719 ppc64_elf_size_stubs (bfd
*output_bfd
,
6720 struct bfd_link_info
*info
,
6721 bfd_signed_vma group_size
,
6722 asection
*(*add_stub_section
) (const char *, asection
*),
6723 void (*layout_sections_again
) (void))
6725 bfd_size_type stub_group_size
;
6726 bfd_boolean stubs_always_before_branch
;
6727 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
6729 /* Stash our params away. */
6730 htab
->add_stub_section
= add_stub_section
;
6731 htab
->layout_sections_again
= layout_sections_again
;
6732 stubs_always_before_branch
= group_size
< 0;
6734 stub_group_size
= -group_size
;
6736 stub_group_size
= group_size
;
6737 if (stub_group_size
== 1)
6739 /* Default values. */
6740 if (stubs_always_before_branch
)
6742 stub_group_size
= 0x1e00000;
6743 if (htab
->has_14bit_branch
)
6744 stub_group_size
= 0x7800;
6748 stub_group_size
= 0x1c00000;
6749 if (htab
->has_14bit_branch
)
6750 stub_group_size
= 0x7000;
6754 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
6759 unsigned int bfd_indx
;
6761 bfd_boolean stub_changed
;
6763 htab
->stub_iteration
+= 1;
6764 stub_changed
= FALSE
;
6766 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
6768 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
6770 Elf_Internal_Shdr
*symtab_hdr
;
6772 Elf_Internal_Sym
*local_syms
= NULL
;
6774 /* We'll need the symbol table in a second. */
6775 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
6776 if (symtab_hdr
->sh_info
== 0)
6779 /* Walk over each section attached to the input bfd. */
6780 for (section
= input_bfd
->sections
;
6782 section
= section
->next
)
6784 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
6786 /* If there aren't any relocs, then there's nothing more
6788 if ((section
->flags
& SEC_RELOC
) == 0
6789 || section
->reloc_count
== 0)
6792 /* If this section is a link-once section that will be
6793 discarded, then don't create any stubs. */
6794 if (section
->output_section
== NULL
6795 || section
->output_section
->owner
!= output_bfd
)
6798 /* Get the relocs. */
6800 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
6802 if (internal_relocs
== NULL
)
6803 goto error_ret_free_local
;
6805 /* Now examine each relocation. */
6806 irela
= internal_relocs
;
6807 irelaend
= irela
+ section
->reloc_count
;
6808 for (; irela
< irelaend
; irela
++)
6810 enum elf_ppc64_reloc_type r_type
;
6811 unsigned int r_indx
;
6812 enum ppc_stub_type stub_type
;
6813 struct ppc_stub_hash_entry
*stub_entry
;
6816 bfd_vma destination
;
6817 struct ppc_link_hash_entry
*hash
;
6818 struct elf_link_hash_entry
*h
;
6819 Elf_Internal_Sym
*sym
;
6821 const asection
*id_sec
;
6823 r_type
= ELF64_R_TYPE (irela
->r_info
);
6824 r_indx
= ELF64_R_SYM (irela
->r_info
);
6826 if (r_type
>= R_PPC64_max
)
6828 bfd_set_error (bfd_error_bad_value
);
6829 goto error_ret_free_internal
;
6832 /* Only look for stubs on branch instructions. */
6833 if (r_type
!= R_PPC64_REL24
6834 && r_type
!= R_PPC64_REL14
6835 && r_type
!= R_PPC64_REL14_BRTAKEN
6836 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
6839 /* Now determine the call target, its name, value,
6842 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6844 goto error_ret_free_internal
;
6845 hash
= (struct ppc_link_hash_entry
*) h
;
6849 /* It's a local symbol. */
6850 sym_value
= sym
->st_value
;
6851 destination
= (sym_value
+ irela
->r_addend
6852 + sym_sec
->output_offset
6853 + sym_sec
->output_section
->vma
);
6857 /* It's an external symbol. */
6859 if (hash
->elf
.root
.type
== bfd_link_hash_defined
6860 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
6862 sym_value
= hash
->elf
.root
.u
.def
.value
;
6863 if (sym_sec
->output_section
!= NULL
)
6864 destination
= (sym_value
+ irela
->r_addend
6865 + sym_sec
->output_offset
6866 + sym_sec
->output_section
->vma
);
6868 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
)
6870 else if (hash
->elf
.root
.type
== bfd_link_hash_undefined
)
6874 bfd_set_error (bfd_error_bad_value
);
6875 goto error_ret_free_internal
;
6879 /* Determine what (if any) linker stub is needed. */
6880 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
6883 if (stub_type
!= ppc_stub_plt_call
)
6885 /* Check whether we need a TOC adjusting stub.
6886 Since the linker pastes together pieces from
6887 different object files when creating the
6888 _init and _fini functions, it may be that a
6889 call to what looks like a local sym is in
6890 fact a call needing a TOC adjustment. */
6892 && sym_sec
->output_section
!= NULL
6893 && (htab
->stub_group
[sym_sec
->id
].toc_off
6894 != htab
->stub_group
[section
->id
].toc_off
)
6895 && sym_sec
->has_gp_reloc
6896 && section
->has_gp_reloc
)
6897 stub_type
= ppc_stub_long_branch_r2off
;
6900 if (stub_type
== ppc_stub_none
)
6903 /* __tls_get_addr calls might be eliminated. */
6904 if (stub_type
!= ppc_stub_plt_call
6906 && &hash
->elf
== htab
->tls_get_addr
6907 && section
->has_tls_reloc
6908 && irela
!= internal_relocs
)
6913 if (!get_tls_mask (&tls_mask
, &local_syms
,
6914 irela
- 1, input_bfd
))
6915 goto error_ret_free_internal
;
6920 /* Support for grouping stub sections. */
6921 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
6923 /* Get the name of this stub. */
6924 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
6926 goto error_ret_free_internal
;
6928 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
6929 stub_name
, FALSE
, FALSE
);
6930 if (stub_entry
!= NULL
)
6932 /* The proper stub has already been created. */
6937 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
6938 if (stub_entry
== NULL
)
6941 error_ret_free_internal
:
6942 if (elf_section_data (section
)->relocs
== NULL
)
6943 free (internal_relocs
);
6944 error_ret_free_local
:
6945 if (local_syms
!= NULL
6946 && (symtab_hdr
->contents
6947 != (unsigned char *) local_syms
))
6952 stub_entry
->stub_type
= stub_type
;
6953 stub_entry
->target_value
= sym_value
;
6954 stub_entry
->target_section
= sym_sec
;
6955 stub_entry
->h
= hash
;
6956 stub_entry
->addend
= irela
->r_addend
;
6957 stub_changed
= TRUE
;
6960 /* We're done with the internal relocs, free them. */
6961 if (elf_section_data (section
)->relocs
!= internal_relocs
)
6962 free (internal_relocs
);
6965 if (local_syms
!= NULL
6966 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6968 if (!info
->keep_memory
)
6971 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6978 /* OK, we've added some stubs. Find out the new size of the
6980 for (stub_sec
= htab
->stub_bfd
->sections
;
6982 stub_sec
= stub_sec
->next
)
6983 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
6985 stub_sec
->_raw_size
= 0;
6986 stub_sec
->_cooked_size
= 0;
6988 htab
->brlt
->_raw_size
= 0;
6989 htab
->brlt
->_cooked_size
= 0;
6991 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, htab
);
6993 /* Ask the linker to do its stuff. */
6994 (*htab
->layout_sections_again
) ();
6997 /* It would be nice to strip .branch_lt from the output if the
6998 section is empty, but it's too late. If we strip sections here,
6999 the dynamic symbol table is corrupted since the section symbol
7000 for the stripped section isn't written. */
7005 /* Called after we have determined section placement. If sections
7006 move, we'll be called again. Provide a value for TOCstart. */
7009 ppc64_elf_toc (bfd
*obfd
)
7014 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
7015 order. The TOC starts where the first of these sections starts. */
7016 s
= bfd_get_section_by_name (obfd
, ".got");
7018 s
= bfd_get_section_by_name (obfd
, ".toc");
7020 s
= bfd_get_section_by_name (obfd
, ".tocbss");
7022 s
= bfd_get_section_by_name (obfd
, ".plt");
7025 /* This may happen for
7026 o references to TOC base (SYM@toc / TOC[tc0]) without a
7029 o --gc-sections and empty TOC sections
7031 FIXME: Warn user? */
7033 /* Look for a likely section. We probably won't even be
7035 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
7036 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
7037 == (SEC_ALLOC
| SEC_SMALL_DATA
))
7040 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
7041 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
7042 == (SEC_ALLOC
| SEC_SMALL_DATA
))
7045 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
7046 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
7049 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
7050 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
7056 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
7061 /* Build all the stubs associated with the current output file.
7062 The stubs are kept in a hash table attached to the main linker
7063 hash table. This function is called via gldelf64ppc_finish. */
7066 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
7067 struct bfd_link_info
*info
,
7070 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7073 int stub_sec_count
= 0;
7075 htab
->emit_stub_syms
= emit_stub_syms
;
7076 for (stub_sec
= htab
->stub_bfd
->sections
;
7078 stub_sec
= stub_sec
->next
)
7079 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
7083 /* Allocate memory to hold the linker stubs. */
7084 size
= stub_sec
->_raw_size
;
7087 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
7088 if (stub_sec
->contents
== NULL
)
7091 stub_sec
->_cooked_size
= 0;
7094 if (htab
->plt
!= NULL
)
7099 /* Build the .glink plt call stub. */
7100 plt0
= (htab
->plt
->output_section
->vma
7101 + htab
->plt
->output_offset
7102 - (htab
->glink
->output_section
->vma
7103 + htab
->glink
->output_offset
7104 + GLINK_CALL_STUB_SIZE
));
7105 if (plt0
+ 0x80008000 > 0xffffffff)
7107 (*_bfd_error_handler
) (_(".glink and .plt too far apart"));
7108 bfd_set_error (bfd_error_bad_value
);
7112 if (htab
->emit_stub_syms
)
7114 struct elf_link_hash_entry
*h
;
7115 h
= elf_link_hash_lookup (&htab
->elf
, "__glink", TRUE
, FALSE
, FALSE
);
7118 if (h
->root
.type
== bfd_link_hash_new
)
7120 h
->root
.type
= bfd_link_hash_defined
;
7121 h
->root
.u
.def
.section
= htab
->glink
;
7122 h
->root
.u
.def
.value
= 0;
7123 h
->elf_link_hash_flags
= (ELF_LINK_HASH_REF_REGULAR
7124 | ELF_LINK_HASH_DEF_REGULAR
7125 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7126 | ELF_LINK_FORCED_LOCAL
);
7129 p
= htab
->glink
->contents
;
7130 bfd_put_32 (htab
->glink
->owner
, MFCTR_R12
, p
);
7132 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_3
, p
);
7134 bfd_put_32 (htab
->glink
->owner
, ADDIC_R2_R0_32K
, p
);
7136 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
7138 bfd_put_32 (htab
->glink
->owner
, SRADI_R2_R2_63
, p
);
7140 bfd_put_32 (htab
->glink
->owner
, SLDI_R11_R0_2
, p
);
7142 bfd_put_32 (htab
->glink
->owner
, AND_R2_R2_R11
, p
);
7144 bfd_put_32 (htab
->glink
->owner
, SUB_R12_R12_R11
, p
);
7146 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R12_R2
, p
);
7148 bfd_put_32 (htab
->glink
->owner
, ADDIS_R12_R12
| PPC_HA (plt0
), p
);
7150 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| PPC_LO (plt0
), p
);
7152 bfd_put_32 (htab
->glink
->owner
, ADDI_R12_R12
| PPC_LO (plt0
), p
);
7154 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
7156 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
7158 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
7160 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
7163 /* Build the .glink lazy link call stubs. */
7165 while (p
< htab
->glink
->contents
+ htab
->glink
->_raw_size
)
7169 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
7174 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
7176 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
7179 bfd_put_32 (htab
->glink
->owner
,
7180 B_DOT
| ((htab
->glink
->contents
- p
) & 0x3fffffc), p
);
7184 htab
->glink
->_cooked_size
= p
- htab
->glink
->contents
;
7187 if (htab
->brlt
->_raw_size
!= 0)
7189 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
7190 htab
->brlt
->_raw_size
);
7191 if (htab
->brlt
->contents
== NULL
)
7195 /* Build the stubs as directed by the stub hash table. */
7196 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
7198 for (stub_sec
= htab
->stub_bfd
->sections
;
7200 stub_sec
= stub_sec
->next
)
7201 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
7203 stub_sec_count
+= 1;
7204 if (stub_sec
->_raw_size
!= stub_sec
->_cooked_size
)
7208 if (stub_sec
!= NULL
7209 || htab
->glink
->_raw_size
!= htab
->glink
->_cooked_size
)
7211 htab
->stub_error
= TRUE
;
7212 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
7215 if (htab
->stub_error
)
7220 *stats
= bfd_malloc (500);
7224 sprintf (*stats
, _("linker stubs in %u groups\n"
7227 " long branch %lu\n"
7228 " long toc adj %lu\n"
7231 htab
->stub_count
[ppc_stub_long_branch
- 1],
7232 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
7233 htab
->stub_count
[ppc_stub_plt_branch
- 1],
7234 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
7235 htab
->stub_count
[ppc_stub_plt_call
- 1]);
7240 /* The RELOCATE_SECTION function is called by the ELF backend linker
7241 to handle the relocations for a section.
7243 The relocs are always passed as Rela structures; if the section
7244 actually uses Rel structures, the r_addend field will always be
7247 This function is responsible for adjust the section contents as
7248 necessary, and (if using Rela relocs and generating a
7249 relocatable output file) adjusting the reloc addend as
7252 This function does not have to worry about setting the reloc
7253 address or the reloc symbol index.
7255 LOCAL_SYMS is a pointer to the swapped in local symbols.
7257 LOCAL_SECTIONS is an array giving the section in the input file
7258 corresponding to the st_shndx field of each local symbol.
7260 The global hash table entry for the global symbols can be found
7261 via elf_sym_hashes (input_bfd).
7263 When generating relocatable output, this function must handle
7264 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7265 going to be the section symbol corresponding to the output
7266 section, which means that the addend must be adjusted
7270 ppc64_elf_relocate_section (bfd
*output_bfd
,
7271 struct bfd_link_info
*info
,
7273 asection
*input_section
,
7275 Elf_Internal_Rela
*relocs
,
7276 Elf_Internal_Sym
*local_syms
,
7277 asection
**local_sections
)
7279 struct ppc_link_hash_table
*htab
;
7280 Elf_Internal_Shdr
*symtab_hdr
;
7281 struct elf_link_hash_entry
**sym_hashes
;
7282 Elf_Internal_Rela
*rel
;
7283 Elf_Internal_Rela
*relend
;
7284 Elf_Internal_Rela outrel
;
7286 struct got_entry
**local_got_ents
;
7288 bfd_boolean ret
= TRUE
;
7290 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
7291 bfd_boolean is_power4
= FALSE
;
7293 if (info
->relocatable
)
7296 /* Initialize howto table if needed. */
7297 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
7300 htab
= ppc_hash_table (info
);
7301 local_got_ents
= elf_local_got_ents (input_bfd
);
7302 TOCstart
= elf_gp (output_bfd
);
7303 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
7304 sym_hashes
= elf_sym_hashes (input_bfd
);
7305 is_opd
= ppc64_elf_section_data (input_section
)->opd
.adjust
!= NULL
;
7308 relend
= relocs
+ input_section
->reloc_count
;
7309 for (; rel
< relend
; rel
++)
7311 enum elf_ppc64_reloc_type r_type
;
7313 bfd_reloc_status_type r
;
7314 Elf_Internal_Sym
*sym
;
7316 struct elf_link_hash_entry
*h
;
7317 struct elf_link_hash_entry
*fdh
;
7318 const char *sym_name
;
7319 unsigned long r_symndx
;
7320 char tls_mask
, tls_gd
, tls_type
;
7322 bfd_boolean unresolved_reloc
;
7324 unsigned long insn
, mask
;
7325 struct ppc_stub_hash_entry
*stub_entry
;
7326 bfd_vma max_br_offset
;
7329 r_type
= ELF64_R_TYPE (rel
->r_info
);
7330 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7332 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
7333 symbol of the previous ADDR64 reloc. The symbol gives us the
7334 proper TOC base to use. */
7335 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
7337 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
7339 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
7345 unresolved_reloc
= FALSE
;
7348 if (r_symndx
< symtab_hdr
->sh_info
)
7350 /* It's a local symbol. */
7351 sym
= local_syms
+ r_symndx
;
7352 sec
= local_sections
[r_symndx
];
7353 sym_name
= bfd_elf_local_sym_name (input_bfd
, sym
);
7354 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, sec
, rel
);
7355 if (elf_section_data (sec
) != NULL
)
7357 long *opd_sym_adjust
;
7359 opd_sym_adjust
= ppc64_elf_section_data (sec
)->opd
.adjust
;
7360 if (opd_sym_adjust
!= NULL
&& sym
->st_value
% 24 == 0)
7361 relocation
+= opd_sym_adjust
[sym
->st_value
/ 24];
7366 /* It's a global symbol. */
7367 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7368 while (h
->root
.type
== bfd_link_hash_indirect
7369 || h
->root
.type
== bfd_link_hash_warning
)
7370 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7371 sym_name
= h
->root
.root
.string
;
7373 if (h
->root
.type
== bfd_link_hash_defined
7374 || h
->root
.type
== bfd_link_hash_defweak
)
7376 sec
= h
->root
.u
.def
.section
;
7377 if (sec
->output_section
== NULL
)
7378 /* Set a flag that will be cleared later if we find a
7379 relocation value for this symbol. output_section
7380 is typically NULL for symbols satisfied by a shared
7382 unresolved_reloc
= TRUE
;
7384 relocation
= (h
->root
.u
.def
.value
7385 + sec
->output_section
->vma
7386 + sec
->output_offset
);
7388 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7390 else if (!info
->executable
7391 && !info
->no_undefined
7392 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
7396 if (! ((*info
->callbacks
->undefined_symbol
)
7397 (info
, h
->root
.root
.string
, input_bfd
, input_section
,
7398 rel
->r_offset
, (info
->executable
7399 || info
->no_undefined
7400 || ELF_ST_VISIBILITY (h
->other
)))))
7406 /* TLS optimizations. Replace instruction sequences and relocs
7407 based on information we collected in tls_optimize. We edit
7408 RELOCS so that --emit-relocs will output something sensible
7409 for the final instruction stream. */
7412 if (IS_PPC64_TLS_RELOC (r_type
))
7415 tls_mask
= ((struct ppc_link_hash_entry
*) h
)->tls_mask
;
7416 else if (local_got_ents
!= NULL
)
7419 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
7420 tls_mask
= lgot_masks
[r_symndx
];
7424 /* Ensure reloc mapping code below stays sane. */
7425 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
7426 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
7427 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
7428 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
7429 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
7430 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
7431 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
7432 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
7433 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
7434 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
7442 case R_PPC64_TOC16_LO
:
7443 case R_PPC64_TOC16_DS
:
7444 case R_PPC64_TOC16_LO_DS
:
7446 /* Check for toc tls entries. */
7450 retval
= get_tls_mask (&toc_tls
, &local_syms
, rel
, input_bfd
);
7456 tls_mask
= *toc_tls
;
7457 if (r_type
== R_PPC64_TOC16_DS
7458 || r_type
== R_PPC64_TOC16_LO_DS
)
7461 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
7466 /* If we found a GD reloc pair, then we might be
7467 doing a GD->IE transition. */
7470 tls_gd
= TLS_TPRELGD
;
7471 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
7472 goto tls_get_addr_check
;
7474 else if (retval
== 3)
7476 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
7477 goto tls_get_addr_check
;
7484 case R_PPC64_GOT_TPREL16_DS
:
7485 case R_PPC64_GOT_TPREL16_LO_DS
:
7487 && (tls_mask
& TLS_TPREL
) == 0)
7490 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
7492 insn
|= 0x3c0d0000; /* addis 0,13,0 */
7493 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
7494 r_type
= R_PPC64_TPREL16_HA
;
7495 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7502 /* Check for toc tls entries. */
7505 if (!get_tls_mask (&toc_tls
, &local_syms
, rel
, input_bfd
))
7509 tls_mask
= *toc_tls
;
7512 && (tls_mask
& TLS_TPREL
) == 0)
7515 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
7516 if ((insn
& ((0x3f << 26) | (31 << 11)))
7517 == ((31 << 26) | (13 << 11)))
7518 rtra
= insn
& ((1 << 26) - (1 << 16));
7519 else if ((insn
& ((0x3f << 26) | (31 << 16)))
7520 == ((31 << 26) | (13 << 16)))
7521 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
7524 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
7527 else if ((insn
& (31 << 1)) == 23 << 1
7528 && ((insn
& (31 << 6)) < 14 << 6
7529 || ((insn
& (31 << 6)) >= 16 << 6
7530 && (insn
& (31 << 6)) < 24 << 6)))
7531 /* load and store indexed -> dform. */
7532 insn
= (32 | ((insn
>> 6) & 31)) << 26;
7533 else if ((insn
& (31 << 1)) == 21 << 1
7534 && (insn
& (0x1a << 6)) == 0)
7535 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7536 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
7537 | ((insn
>> 6) & 1));
7538 else if ((insn
& (31 << 1)) == 21 << 1
7539 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
7541 insn
= (58 << 26) | 2;
7545 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7546 r_type
= R_PPC64_TPREL16_LO
;
7547 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7548 /* Was PPC64_TLS which sits on insn boundary, now
7549 PPC64_TPREL16_LO which is at insn+2. */
7554 case R_PPC64_GOT_TLSGD16_HI
:
7555 case R_PPC64_GOT_TLSGD16_HA
:
7556 tls_gd
= TLS_TPRELGD
;
7557 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
7561 case R_PPC64_GOT_TLSLD16_HI
:
7562 case R_PPC64_GOT_TLSLD16_HA
:
7563 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
7566 if ((tls_mask
& tls_gd
) != 0)
7567 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
7568 + R_PPC64_GOT_TPREL16_DS
);
7571 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
7573 r_type
= R_PPC64_NONE
;
7575 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7579 case R_PPC64_GOT_TLSGD16
:
7580 case R_PPC64_GOT_TLSGD16_LO
:
7581 tls_gd
= TLS_TPRELGD
;
7582 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
7583 goto tls_get_addr_check
;
7586 case R_PPC64_GOT_TLSLD16
:
7587 case R_PPC64_GOT_TLSLD16_LO
:
7588 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
7591 if (rel
+ 1 < relend
)
7593 enum elf_ppc64_reloc_type r_type2
;
7594 unsigned long r_symndx2
;
7595 struct elf_link_hash_entry
*h2
;
7596 bfd_vma insn1
, insn2
, insn3
;
7599 /* The next instruction should be a call to
7600 __tls_get_addr. Peek at the reloc to be sure. */
7601 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
7602 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
7603 if (r_symndx2
< symtab_hdr
->sh_info
7604 || (r_type2
!= R_PPC64_REL14
7605 && r_type2
!= R_PPC64_REL14_BRTAKEN
7606 && r_type2
!= R_PPC64_REL14_BRNTAKEN
7607 && r_type2
!= R_PPC64_REL24
))
7610 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
7611 while (h2
->root
.type
== bfd_link_hash_indirect
7612 || h2
->root
.type
== bfd_link_hash_warning
)
7613 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
7614 if (h2
== NULL
|| h2
!= htab
->tls_get_addr
)
7617 /* OK, it checks out. Replace the call. */
7618 offset
= rel
[1].r_offset
;
7619 insn1
= bfd_get_32 (output_bfd
,
7620 contents
+ rel
->r_offset
- 2);
7621 insn3
= bfd_get_32 (output_bfd
,
7622 contents
+ offset
+ 4);
7623 if ((tls_mask
& tls_gd
) != 0)
7626 insn1
&= (1 << 26) - (1 << 2);
7627 insn1
|= 58 << 26; /* ld */
7628 insn2
= 0x7c636a14; /* add 3,3,13 */
7629 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
7630 if ((tls_mask
& TLS_EXPLICIT
) == 0)
7631 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
7632 + R_PPC64_GOT_TPREL16_DS
);
7634 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
7635 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7640 insn1
= 0x3c6d0000; /* addis 3,13,0 */
7641 insn2
= 0x38630000; /* addi 3,3,0 */
7644 /* Was an LD reloc. */
7646 rel
->r_addend
= htab
->tls_sec
->vma
+ DTP_OFFSET
;
7647 rel
[1].r_addend
= htab
->tls_sec
->vma
+ DTP_OFFSET
;
7649 r_type
= R_PPC64_TPREL16_HA
;
7650 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7651 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
7652 R_PPC64_TPREL16_LO
);
7653 rel
[1].r_offset
+= 2;
7656 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
7660 rel
[1].r_offset
+= 4;
7662 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
7663 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
7664 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
7667 /* We changed the symbol on an LD reloc. Start over
7668 in order to get h, sym, sec etc. right. */
7676 case R_PPC64_DTPMOD64
:
7677 if (rel
+ 1 < relend
7678 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
7679 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7681 if ((tls_mask
& TLS_GD
) == 0)
7683 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
7684 if ((tls_mask
& TLS_TPRELGD
) != 0)
7685 r_type
= R_PPC64_TPREL64
;
7688 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
7689 r_type
= R_PPC64_NONE
;
7691 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7696 if ((tls_mask
& TLS_LD
) == 0)
7698 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
7699 r_type
= R_PPC64_NONE
;
7700 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7705 case R_PPC64_TPREL64
:
7706 if ((tls_mask
& TLS_TPREL
) == 0)
7708 r_type
= R_PPC64_NONE
;
7709 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
7714 /* Handle other relocations that tweak non-addend part of insn. */
7721 /* Branch taken prediction relocations. */
7722 case R_PPC64_ADDR14_BRTAKEN
:
7723 case R_PPC64_REL14_BRTAKEN
:
7724 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
7727 /* Branch not taken prediction relocations. */
7728 case R_PPC64_ADDR14_BRNTAKEN
:
7729 case R_PPC64_REL14_BRNTAKEN
:
7730 insn
|= bfd_get_32 (output_bfd
,
7731 contents
+ rel
->r_offset
) & ~(0x01 << 21);
7734 /* Set 'a' bit. This is 0b00010 in BO field for branch
7735 on CR(BI) insns (BO == 001at or 011at), and 0b01000
7736 for branch on CTR insns (BO == 1a00t or 1a01t). */
7737 if ((insn
& (0x14 << 21)) == (0x04 << 21))
7739 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
7746 from
= (rel
->r_offset
7747 + input_section
->output_offset
7748 + input_section
->output_section
->vma
);
7750 /* Invert 'y' bit if not the default. */
7751 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
7755 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
7759 /* Calls to functions with a different TOC, such as calls to
7760 shared objects, need to alter the TOC pointer. This is
7761 done using a linkage stub. A REL24 branching to these
7762 linkage stubs needs to be followed by a nop, as the nop
7763 will be replaced with an instruction to restore the TOC
7766 && (fdh
= ((struct ppc_link_hash_entry
*) h
)->oh
) != NULL
7767 && fdh
->plt
.plist
!= NULL
)
7768 || ((fdh
= h
, sec
) != NULL
7769 && sec
->output_section
!= NULL
7770 && (htab
->stub_group
[sec
->id
].toc_off
7771 != htab
->stub_group
[input_section
->id
].toc_off
)))
7772 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
7774 && (stub_entry
->stub_type
== ppc_stub_plt_call
7775 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
7776 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
7778 bfd_boolean can_plt_call
= 0;
7780 if (rel
->r_offset
+ 8 <= input_section
->_cooked_size
)
7782 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
7784 || insn
== CROR_151515
|| insn
== CROR_313131
)
7786 bfd_put_32 (input_bfd
, LD_R2_40R1
,
7787 contents
+ rel
->r_offset
+ 4);
7794 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
7796 /* If this is a plain branch rather than a branch
7797 and link, don't require a nop. */
7798 insn
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7799 if ((insn
& 1) == 0)
7803 && strcmp (h
->root
.root
.string
,
7804 ".__libc_start_main") == 0)
7806 /* Allow crt1 branch to go via a toc adjusting stub. */
7811 if (strcmp (input_section
->output_section
->name
,
7813 || strcmp (input_section
->output_section
->name
,
7815 (*_bfd_error_handler
)
7816 (_("%s(%s+0x%lx): automatic multiple TOCs "
7817 "not supported using your crt files; "
7818 "recompile with -mminimal-toc or upgrade gcc"),
7819 bfd_archive_filename (input_bfd
),
7820 input_section
->name
,
7821 (long) rel
->r_offset
);
7823 (*_bfd_error_handler
)
7824 (_("%s(%s+0x%lx): sibling call optimization to `%s' "
7825 "does not allow automatic multiple TOCs; "
7826 "recompile with -mminimal-toc or "
7827 "-fno-optimize-sibling-calls, "
7828 "or make `%s' extern"),
7829 bfd_archive_filename (input_bfd
),
7830 input_section
->name
,
7831 (long) rel
->r_offset
,
7834 bfd_set_error (bfd_error_bad_value
);
7841 relocation
= (stub_entry
->stub_offset
7842 + stub_entry
->stub_sec
->output_offset
7843 + stub_entry
->stub_sec
->output_section
->vma
);
7844 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
7845 unresolved_reloc
= FALSE
;
7850 && h
->root
.type
== bfd_link_hash_undefweak
7852 && rel
->r_addend
== 0)
7854 /* Tweak calls to undefined weak functions to point at a
7855 blr. We can thus call a weak function without first
7856 checking whether the function is defined. We have a
7857 blr at the end of .sfpr. */
7858 BFD_ASSERT (htab
->sfpr
->_raw_size
!= 0);
7859 relocation
= (htab
->sfpr
->_raw_size
- 4
7860 + htab
->sfpr
->output_offset
7861 + htab
->sfpr
->output_section
->vma
);
7862 from
= (rel
->r_offset
7863 + input_section
->output_offset
7864 + input_section
->output_section
->vma
);
7866 /* But let's not be silly about it. If the blr isn't in
7867 reach, just go to the next instruction. */
7868 if (relocation
- from
+ (1 << 25) >= (1 << 26)
7869 || htab
->sfpr
->_raw_size
== 0)
7870 relocation
= from
+ 4;
7877 addend
= rel
->r_addend
;
7881 (*_bfd_error_handler
)
7882 (_("%s: unknown relocation type %d for symbol %s"),
7883 bfd_archive_filename (input_bfd
), (int) r_type
, sym_name
);
7885 bfd_set_error (bfd_error_bad_value
);
7891 case R_PPC64_GNU_VTINHERIT
:
7892 case R_PPC64_GNU_VTENTRY
:
7895 /* GOT16 relocations. Like an ADDR16 using the symbol's
7896 address in the GOT as relocation value instead of the
7897 symbol's value itself. Also, create a GOT entry for the
7898 symbol and put the symbol value there. */
7899 case R_PPC64_GOT_TLSGD16
:
7900 case R_PPC64_GOT_TLSGD16_LO
:
7901 case R_PPC64_GOT_TLSGD16_HI
:
7902 case R_PPC64_GOT_TLSGD16_HA
:
7903 tls_type
= TLS_TLS
| TLS_GD
;
7906 case R_PPC64_GOT_TLSLD16
:
7907 case R_PPC64_GOT_TLSLD16_LO
:
7908 case R_PPC64_GOT_TLSLD16_HI
:
7909 case R_PPC64_GOT_TLSLD16_HA
:
7910 tls_type
= TLS_TLS
| TLS_LD
;
7913 case R_PPC64_GOT_TPREL16_DS
:
7914 case R_PPC64_GOT_TPREL16_LO_DS
:
7915 case R_PPC64_GOT_TPREL16_HI
:
7916 case R_PPC64_GOT_TPREL16_HA
:
7917 tls_type
= TLS_TLS
| TLS_TPREL
;
7920 case R_PPC64_GOT_DTPREL16_DS
:
7921 case R_PPC64_GOT_DTPREL16_LO_DS
:
7922 case R_PPC64_GOT_DTPREL16_HI
:
7923 case R_PPC64_GOT_DTPREL16_HA
:
7924 tls_type
= TLS_TLS
| TLS_DTPREL
;
7928 case R_PPC64_GOT16_LO
:
7929 case R_PPC64_GOT16_HI
:
7930 case R_PPC64_GOT16_HA
:
7931 case R_PPC64_GOT16_DS
:
7932 case R_PPC64_GOT16_LO_DS
:
7935 /* Relocation is to the entry for this symbol in the global
7940 unsigned long indx
= 0;
7942 if (tls_type
== (TLS_TLS
| TLS_LD
)
7944 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
7945 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
7948 struct got_entry
*ent
;
7952 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
7953 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
7955 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
7956 /* This is actually a static link, or it is a
7957 -Bsymbolic link and the symbol is defined
7958 locally, or the symbol was forced to be local
7959 because of a version file. */
7964 unresolved_reloc
= FALSE
;
7970 if (local_got_ents
== NULL
)
7972 ent
= local_got_ents
[r_symndx
];
7975 for (; ent
!= NULL
; ent
= ent
->next
)
7976 if (ent
->addend
== rel
->r_addend
7977 && ent
->owner
== input_bfd
7978 && ent
->tls_type
== tls_type
)
7982 offp
= &ent
->got
.offset
;
7985 got
= ppc64_elf_tdata (input_bfd
)->got
;
7989 /* The offset must always be a multiple of 8. We use the
7990 least significant bit to record whether we have already
7991 processed this entry. */
7997 /* Generate relocs for the dynamic linker, except in
7998 the case of TLSLD where we'll use one entry per
8000 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
8003 if ((info
->shared
|| indx
!= 0)
8005 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8006 || h
->root
.type
!= bfd_link_hash_undefweak
))
8008 outrel
.r_offset
= (got
->output_section
->vma
8009 + got
->output_offset
8011 outrel
.r_addend
= rel
->r_addend
;
8012 if (tls_type
& (TLS_LD
| TLS_GD
))
8014 outrel
.r_addend
= 0;
8015 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
8016 if (tls_type
== (TLS_TLS
| TLS_GD
))
8018 loc
= relgot
->contents
;
8019 loc
+= (relgot
->reloc_count
++
8020 * sizeof (Elf64_External_Rela
));
8021 bfd_elf64_swap_reloca_out (output_bfd
,
8023 outrel
.r_offset
+= 8;
8024 outrel
.r_addend
= rel
->r_addend
;
8026 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
8029 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
8030 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
8031 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
8032 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
8035 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
8037 /* Write the .got section contents for the sake
8039 loc
= got
->contents
+ off
;
8040 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
8044 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
8046 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
8048 outrel
.r_addend
+= relocation
;
8049 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
8050 outrel
.r_addend
-= htab
->tls_sec
->vma
;
8052 loc
= relgot
->contents
;
8053 loc
+= (relgot
->reloc_count
++
8054 * sizeof (Elf64_External_Rela
));
8055 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
8058 /* Init the .got section contents here if we're not
8059 emitting a reloc. */
8062 relocation
+= rel
->r_addend
;
8063 if (tls_type
== (TLS_TLS
| TLS_LD
))
8065 else if (tls_type
!= 0)
8067 relocation
-= htab
->tls_sec
->vma
+ DTP_OFFSET
;
8068 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
8069 relocation
+= DTP_OFFSET
- TP_OFFSET
;
8071 if (tls_type
== (TLS_TLS
| TLS_GD
))
8073 bfd_put_64 (output_bfd
, relocation
,
8074 got
->contents
+ off
+ 8);
8079 bfd_put_64 (output_bfd
, relocation
,
8080 got
->contents
+ off
);
8084 if (off
>= (bfd_vma
) -2)
8087 relocation
= got
->output_offset
+ off
;
8089 /* TOC base (r2) is TOC start plus 0x8000. */
8090 addend
= -TOC_BASE_OFF
;
8094 case R_PPC64_PLT16_HA
:
8095 case R_PPC64_PLT16_HI
:
8096 case R_PPC64_PLT16_LO
:
8099 /* Relocation is to the entry for this symbol in the
8100 procedure linkage table. */
8102 /* Resolve a PLT reloc against a local symbol directly,
8103 without using the procedure linkage table. */
8107 /* It's possible that we didn't make a PLT entry for this
8108 symbol. This happens when statically linking PIC code,
8109 or when using -Bsymbolic. Go find a match if there is a
8111 if (htab
->plt
!= NULL
)
8113 struct plt_entry
*ent
;
8114 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8115 if (ent
->addend
== rel
->r_addend
8116 && ent
->plt
.offset
!= (bfd_vma
) -1)
8118 relocation
= (htab
->plt
->output_section
->vma
8119 + htab
->plt
->output_offset
8121 unresolved_reloc
= FALSE
;
8127 /* Relocation value is TOC base. */
8128 relocation
= TOCstart
;
8130 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
8131 else if (sec
!= NULL
&& !unresolved_reloc
)
8132 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
8134 unresolved_reloc
= TRUE
;
8137 /* TOC16 relocs. We want the offset relative to the TOC base,
8138 which is the address of the start of the TOC plus 0x8000.
8139 The TOC consists of sections .got, .toc, .tocbss, and .plt,
8142 case R_PPC64_TOC16_LO
:
8143 case R_PPC64_TOC16_HI
:
8144 case R_PPC64_TOC16_DS
:
8145 case R_PPC64_TOC16_LO_DS
:
8146 case R_PPC64_TOC16_HA
:
8147 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
8150 /* Relocate against the beginning of the section. */
8151 case R_PPC64_SECTOFF
:
8152 case R_PPC64_SECTOFF_LO
:
8153 case R_PPC64_SECTOFF_HI
:
8154 case R_PPC64_SECTOFF_DS
:
8155 case R_PPC64_SECTOFF_LO_DS
:
8156 case R_PPC64_SECTOFF_HA
:
8158 addend
-= sec
->output_section
->vma
;
8162 case R_PPC64_REL14_BRNTAKEN
:
8163 case R_PPC64_REL14_BRTAKEN
:
8167 case R_PPC64_TPREL16
:
8168 case R_PPC64_TPREL16_LO
:
8169 case R_PPC64_TPREL16_HI
:
8170 case R_PPC64_TPREL16_HA
:
8171 case R_PPC64_TPREL16_DS
:
8172 case R_PPC64_TPREL16_LO_DS
:
8173 case R_PPC64_TPREL16_HIGHER
:
8174 case R_PPC64_TPREL16_HIGHERA
:
8175 case R_PPC64_TPREL16_HIGHEST
:
8176 case R_PPC64_TPREL16_HIGHESTA
:
8177 addend
-= htab
->tls_sec
->vma
+ TP_OFFSET
;
8179 /* The TPREL16 relocs shouldn't really be used in shared
8180 libs as they will result in DT_TEXTREL being set, but
8181 support them anyway. */
8185 case R_PPC64_DTPREL16
:
8186 case R_PPC64_DTPREL16_LO
:
8187 case R_PPC64_DTPREL16_HI
:
8188 case R_PPC64_DTPREL16_HA
:
8189 case R_PPC64_DTPREL16_DS
:
8190 case R_PPC64_DTPREL16_LO_DS
:
8191 case R_PPC64_DTPREL16_HIGHER
:
8192 case R_PPC64_DTPREL16_HIGHERA
:
8193 case R_PPC64_DTPREL16_HIGHEST
:
8194 case R_PPC64_DTPREL16_HIGHESTA
:
8195 addend
-= htab
->tls_sec
->vma
+ DTP_OFFSET
;
8198 case R_PPC64_DTPMOD64
:
8203 case R_PPC64_TPREL64
:
8204 addend
-= htab
->tls_sec
->vma
+ TP_OFFSET
;
8207 case R_PPC64_DTPREL64
:
8208 addend
-= htab
->tls_sec
->vma
+ DTP_OFFSET
;
8211 /* Relocations that may need to be propagated if this is a
8216 case R_PPC64_ADDR14
:
8217 case R_PPC64_ADDR14_BRNTAKEN
:
8218 case R_PPC64_ADDR14_BRTAKEN
:
8219 case R_PPC64_ADDR16
:
8220 case R_PPC64_ADDR16_DS
:
8221 case R_PPC64_ADDR16_HA
:
8222 case R_PPC64_ADDR16_HI
:
8223 case R_PPC64_ADDR16_HIGHER
:
8224 case R_PPC64_ADDR16_HIGHERA
:
8225 case R_PPC64_ADDR16_HIGHEST
:
8226 case R_PPC64_ADDR16_HIGHESTA
:
8227 case R_PPC64_ADDR16_LO
:
8228 case R_PPC64_ADDR16_LO_DS
:
8229 case R_PPC64_ADDR24
:
8230 case R_PPC64_ADDR32
:
8231 case R_PPC64_ADDR64
:
8232 case R_PPC64_UADDR16
:
8233 case R_PPC64_UADDR32
:
8234 case R_PPC64_UADDR64
:
8235 /* r_symndx will be zero only for relocs against symbols
8236 from removed linkonce sections, or sections discarded by
8244 if ((input_section
->flags
& SEC_ALLOC
) == 0)
8247 if (NO_OPD_RELOCS
&& is_opd
)
8252 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8253 || h
->root
.type
!= bfd_link_hash_undefweak
)
8254 && (MUST_BE_DYN_RELOC (r_type
)
8255 || !SYMBOL_CALLS_LOCAL (info
, h
)))
8256 || (ELIMINATE_COPY_RELOCS
8260 && (h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
8261 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
8262 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0))
8264 Elf_Internal_Rela outrel
;
8265 bfd_boolean skip
, relocate
;
8270 /* When generating a dynamic object, these relocations
8271 are copied into the output file to be resolved at run
8277 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
8278 input_section
, rel
->r_offset
);
8279 if (out_off
== (bfd_vma
) -1)
8281 else if (out_off
== (bfd_vma
) -2)
8282 skip
= TRUE
, relocate
= TRUE
;
8283 out_off
+= (input_section
->output_section
->vma
8284 + input_section
->output_offset
);
8285 outrel
.r_offset
= out_off
;
8286 outrel
.r_addend
= rel
->r_addend
;
8288 /* Optimize unaligned reloc use. */
8289 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
8290 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
8291 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
8292 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
8293 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
8294 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
8295 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
8296 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
8297 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
8300 memset (&outrel
, 0, sizeof outrel
);
8301 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
)
8303 && r_type
!= R_PPC64_TOC
)
8304 outrel
.r_info
= ELF64_R_INFO (h
->dynindx
, r_type
);
8307 /* This symbol is local, or marked to become local,
8308 or this is an opd section reloc which must point
8309 at a local function. */
8310 outrel
.r_addend
+= relocation
;
8311 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
8313 if (is_opd
&& h
!= NULL
)
8315 /* Lie about opd entries. This case occurs
8316 when building shared libraries and we
8317 reference a function in another shared
8318 lib. The same thing happens for a weak
8319 definition in an application that's
8320 overridden by a strong definition in a
8321 shared lib. (I believe this is a generic
8322 bug in binutils handling of weak syms.)
8323 In these cases we won't use the opd
8324 entry in this lib. */
8325 unresolved_reloc
= FALSE
;
8327 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8329 /* We need to relocate .opd contents for ld.so.
8330 Prelink also wants simple and consistent rules
8331 for relocs. This make all RELATIVE relocs have
8332 *r_offset equal to r_addend. */
8339 if (bfd_is_abs_section (sec
))
8341 else if (sec
== NULL
|| sec
->owner
== NULL
)
8343 bfd_set_error (bfd_error_bad_value
);
8350 osec
= sec
->output_section
;
8351 indx
= elf_section_data (osec
)->dynindx
;
8353 /* We are turning this relocation into one
8354 against a section symbol, so subtract out
8355 the output section's address but not the
8356 offset of the input section in the output
8358 outrel
.r_addend
-= osec
->vma
;
8361 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
8365 sreloc
= elf_section_data (input_section
)->sreloc
;
8369 loc
= sreloc
->contents
;
8370 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
8371 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
8373 /* If this reloc is against an external symbol, it will
8374 be computed at runtime, so there's no need to do
8375 anything now. However, for the sake of prelink ensure
8376 that the section contents are a known value. */
8379 unresolved_reloc
= FALSE
;
8380 /* The value chosen here is quite arbitrary as ld.so
8381 ignores section contents except for the special
8382 case of .opd where the contents might be accessed
8383 before relocation. Choose zero, as that won't
8384 cause reloc overflow. */
8387 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
8388 to improve backward compatibility with older
8390 if (r_type
== R_PPC64_ADDR64
)
8391 addend
= outrel
.r_addend
;
8392 /* Adjust pc_relative relocs to have zero in *r_offset. */
8393 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
8394 addend
= (input_section
->output_section
->vma
8395 + input_section
->output_offset
8402 case R_PPC64_GLOB_DAT
:
8403 case R_PPC64_JMP_SLOT
:
8404 case R_PPC64_RELATIVE
:
8405 /* We shouldn't ever see these dynamic relocs in relocatable
8409 case R_PPC64_PLTGOT16
:
8410 case R_PPC64_PLTGOT16_DS
:
8411 case R_PPC64_PLTGOT16_HA
:
8412 case R_PPC64_PLTGOT16_HI
:
8413 case R_PPC64_PLTGOT16_LO
:
8414 case R_PPC64_PLTGOT16_LO_DS
:
8415 case R_PPC64_PLTREL32
:
8416 case R_PPC64_PLTREL64
:
8417 /* These ones haven't been implemented yet. */
8419 (*_bfd_error_handler
)
8420 (_("%s: relocation %s is not supported for symbol %s."),
8421 bfd_archive_filename (input_bfd
),
8422 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
8424 bfd_set_error (bfd_error_invalid_operation
);
8429 /* Do any further special processing. */
8435 case R_PPC64_ADDR16_HA
:
8436 case R_PPC64_ADDR16_HIGHERA
:
8437 case R_PPC64_ADDR16_HIGHESTA
:
8438 case R_PPC64_GOT16_HA
:
8439 case R_PPC64_PLTGOT16_HA
:
8440 case R_PPC64_PLT16_HA
:
8441 case R_PPC64_TOC16_HA
:
8442 case R_PPC64_SECTOFF_HA
:
8443 case R_PPC64_TPREL16_HA
:
8444 case R_PPC64_DTPREL16_HA
:
8445 case R_PPC64_GOT_TLSGD16_HA
:
8446 case R_PPC64_GOT_TLSLD16_HA
:
8447 case R_PPC64_GOT_TPREL16_HA
:
8448 case R_PPC64_GOT_DTPREL16_HA
:
8449 case R_PPC64_TPREL16_HIGHER
:
8450 case R_PPC64_TPREL16_HIGHERA
:
8451 case R_PPC64_TPREL16_HIGHEST
:
8452 case R_PPC64_TPREL16_HIGHESTA
:
8453 case R_PPC64_DTPREL16_HIGHER
:
8454 case R_PPC64_DTPREL16_HIGHERA
:
8455 case R_PPC64_DTPREL16_HIGHEST
:
8456 case R_PPC64_DTPREL16_HIGHESTA
:
8457 /* It's just possible that this symbol is a weak symbol
8458 that's not actually defined anywhere. In that case,
8459 'sec' would be NULL, and we should leave the symbol
8460 alone (it will be set to zero elsewhere in the link). */
8462 /* Add 0x10000 if sign bit in 0:15 is set.
8463 Bits 0:15 are not used. */
8467 case R_PPC64_ADDR16_DS
:
8468 case R_PPC64_ADDR16_LO_DS
:
8469 case R_PPC64_GOT16_DS
:
8470 case R_PPC64_GOT16_LO_DS
:
8471 case R_PPC64_PLT16_LO_DS
:
8472 case R_PPC64_SECTOFF_DS
:
8473 case R_PPC64_SECTOFF_LO_DS
:
8474 case R_PPC64_TOC16_DS
:
8475 case R_PPC64_TOC16_LO_DS
:
8476 case R_PPC64_PLTGOT16_DS
:
8477 case R_PPC64_PLTGOT16_LO_DS
:
8478 case R_PPC64_GOT_TPREL16_DS
:
8479 case R_PPC64_GOT_TPREL16_LO_DS
:
8480 case R_PPC64_GOT_DTPREL16_DS
:
8481 case R_PPC64_GOT_DTPREL16_LO_DS
:
8482 case R_PPC64_TPREL16_DS
:
8483 case R_PPC64_TPREL16_LO_DS
:
8484 case R_PPC64_DTPREL16_DS
:
8485 case R_PPC64_DTPREL16_LO_DS
:
8486 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
8488 /* If this reloc is against an lq insn, then the value must be
8489 a multiple of 16. This is somewhat of a hack, but the
8490 "correct" way to do this by defining _DQ forms of all the
8491 _DS relocs bloats all reloc switches in this file. It
8492 doesn't seem to make much sense to use any of these relocs
8493 in data, so testing the insn should be safe. */
8494 if ((insn
& (0x3f << 26)) == (56u << 26))
8496 if (((relocation
+ addend
) & mask
) != 0)
8498 (*_bfd_error_handler
)
8499 (_("%s: error: relocation %s not a multiple of %d"),
8500 bfd_archive_filename (input_bfd
),
8501 ppc64_elf_howto_table
[r_type
]->name
,
8503 bfd_set_error (bfd_error_bad_value
);
8510 case R_PPC64_REL14_BRNTAKEN
:
8511 case R_PPC64_REL14_BRTAKEN
:
8512 max_br_offset
= 1 << 15;
8516 max_br_offset
= 1 << 25;
8519 /* If the branch is out of reach or the TOC register needs
8520 adjusting, then redirect the call to the local stub for
8522 from
= (rel
->r_offset
8523 + input_section
->output_offset
8524 + input_section
->output_section
->vma
);
8525 if ((relocation
+ addend
- from
+ max_br_offset
>= 2 * max_br_offset
8527 && sec
->output_section
!= NULL
8528 && sec
->id
<= htab
->top_id
8529 && (htab
->stub_group
[sec
->id
].toc_off
8530 != htab
->stub_group
[input_section
->id
].toc_off
)))
8531 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
,
8532 rel
, htab
)) != NULL
)
8534 /* Munge up the value and addend so that we call the stub
8535 rather than the procedure directly. */
8536 relocation
= (stub_entry
->stub_offset
8537 + stub_entry
->stub_sec
->output_offset
8538 + stub_entry
->stub_sec
->output_section
->vma
);
8544 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8545 because such sections are not SEC_ALLOC and thus ld.so will
8546 not process them. */
8547 if (unresolved_reloc
8548 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
8549 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0))
8551 (*_bfd_error_handler
)
8552 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
8553 bfd_archive_filename (input_bfd
),
8554 bfd_get_section_name (input_bfd
, input_section
),
8555 (long) rel
->r_offset
,
8556 ppc64_elf_howto_table
[(int) r_type
]->name
,
8557 h
->root
.root
.string
);
8561 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
8569 if (r
!= bfd_reloc_ok
)
8571 if (sym_name
== NULL
)
8572 sym_name
= "(null)";
8573 if (r
== bfd_reloc_overflow
)
8578 && h
->root
.type
== bfd_link_hash_undefweak
8579 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
8581 /* Assume this is a call protected by other code that
8582 detects the symbol is undefined. If this is the case,
8583 we can safely ignore the overflow. If not, the
8584 program is hosed anyway, and a little warning isn't
8590 if (!((*info
->callbacks
->reloc_overflow
)
8591 (info
, sym_name
, ppc64_elf_howto_table
[r_type
]->name
,
8592 rel
->r_addend
, input_bfd
, input_section
, rel
->r_offset
)))
8597 (*_bfd_error_handler
)
8598 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
8599 bfd_archive_filename (input_bfd
),
8600 bfd_get_section_name (input_bfd
, input_section
),
8601 (long) rel
->r_offset
,
8602 ppc64_elf_howto_table
[r_type
]->name
,
8613 /* Finish up dynamic symbol handling. We set the contents of various
8614 dynamic sections here. */
8617 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
8618 struct bfd_link_info
*info
,
8619 struct elf_link_hash_entry
*h
,
8620 Elf_Internal_Sym
*sym
)
8622 struct ppc_link_hash_table
*htab
;
8625 htab
= ppc_hash_table (info
);
8626 dynobj
= htab
->elf
.dynobj
;
8628 if (((struct ppc_link_hash_entry
*) h
)->is_func_descriptor
)
8630 struct plt_entry
*ent
;
8631 Elf_Internal_Rela rela
;
8634 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8635 if (ent
->plt
.offset
!= (bfd_vma
) -1)
8637 /* This symbol has an entry in the procedure linkage
8638 table. Set it up. */
8640 if (htab
->plt
== NULL
8641 || htab
->relplt
== NULL
8642 || htab
->glink
== NULL
)
8645 /* Create a JMP_SLOT reloc to inform the dynamic linker to
8646 fill in the PLT entry. */
8647 rela
.r_offset
= (htab
->plt
->output_section
->vma
8648 + htab
->plt
->output_offset
8650 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
8651 rela
.r_addend
= ent
->addend
;
8653 loc
= htab
->relplt
->contents
;
8654 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
8655 * sizeof (Elf64_External_Rela
));
8656 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
8660 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
8662 Elf_Internal_Rela rela
;
8665 /* This symbol needs a copy reloc. Set it up. */
8667 if (h
->dynindx
== -1
8668 || (h
->root
.type
!= bfd_link_hash_defined
8669 && h
->root
.type
!= bfd_link_hash_defweak
)
8670 || htab
->relbss
== NULL
)
8673 rela
.r_offset
= (h
->root
.u
.def
.value
8674 + h
->root
.u
.def
.section
->output_section
->vma
8675 + h
->root
.u
.def
.section
->output_offset
);
8676 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
8678 loc
= htab
->relbss
->contents
;
8679 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
8680 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
8683 /* Mark some specially defined symbols as absolute. */
8684 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
8685 sym
->st_shndx
= SHN_ABS
;
8690 /* Used to decide how to sort relocs in an optimal manner for the
8691 dynamic linker, before writing them out. */
8693 static enum elf_reloc_type_class
8694 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
8696 enum elf_ppc64_reloc_type r_type
;
8698 r_type
= ELF64_R_TYPE (rela
->r_info
);
8701 case R_PPC64_RELATIVE
:
8702 return reloc_class_relative
;
8703 case R_PPC64_JMP_SLOT
:
8704 return reloc_class_plt
;
8706 return reloc_class_copy
;
8708 return reloc_class_normal
;
8712 /* Finish up the dynamic sections. */
8715 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
8716 struct bfd_link_info
*info
)
8718 struct ppc_link_hash_table
*htab
;
8722 htab
= ppc_hash_table (info
);
8723 dynobj
= htab
->elf
.dynobj
;
8724 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
8726 if (htab
->elf
.dynamic_sections_created
)
8728 Elf64_External_Dyn
*dyncon
, *dynconend
;
8730 if (sdyn
== NULL
|| htab
->got
== NULL
)
8733 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
8734 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
8735 for (; dyncon
< dynconend
; dyncon
++)
8737 Elf_Internal_Dyn dyn
;
8740 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
8747 case DT_PPC64_GLINK
:
8749 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
8750 /* We stupidly defined DT_PPC64_GLINK to be the start
8751 of glink rather than the first entry point, which is
8752 what ld.so needs, and now have a bigger stub to
8753 support automatic multiple TOCs. */
8754 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
8758 s
= bfd_get_section_by_name (output_bfd
, ".opd");
8761 dyn
.d_un
.d_ptr
= s
->vma
;
8764 case DT_PPC64_OPDSZ
:
8765 s
= bfd_get_section_by_name (output_bfd
, ".opd");
8768 dyn
.d_un
.d_val
= s
->_raw_size
;
8773 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
8778 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
8782 dyn
.d_un
.d_val
= htab
->relplt
->_raw_size
;
8786 /* Don't count procedure linkage table relocs in the
8787 overall reloc count. */
8791 dyn
.d_un
.d_val
-= s
->_raw_size
;
8795 /* We may not be using the standard ELF linker script.
8796 If .rela.plt is the first .rela section, we adjust
8797 DT_RELA to not include it. */
8801 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
8803 dyn
.d_un
.d_ptr
+= s
->_raw_size
;
8807 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
8811 if (htab
->got
!= NULL
&& htab
->got
->_raw_size
!= 0)
8813 /* Fill in the first entry in the global offset table.
8814 We use it to hold the link-time TOCbase. */
8815 bfd_put_64 (output_bfd
,
8816 elf_gp (output_bfd
) + TOC_BASE_OFF
,
8817 htab
->got
->contents
);
8819 /* Set .got entry size. */
8820 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
8823 if (htab
->plt
!= NULL
&& htab
->plt
->_raw_size
!= 0)
8825 /* Set .plt entry size. */
8826 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
8830 /* We need to handle writing out multiple GOT sections ourselves,
8831 since we didn't add them to DYNOBJ. */
8832 while ((dynobj
= dynobj
->link_next
) != NULL
)
8835 s
= ppc64_elf_tdata (dynobj
)->got
;
8837 && s
->_raw_size
!= 0
8838 && s
->output_section
!= bfd_abs_section_ptr
8839 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
8840 s
->contents
, s
->output_offset
,
8843 s
= ppc64_elf_tdata (dynobj
)->relgot
;
8845 && s
->_raw_size
!= 0
8846 && s
->output_section
!= bfd_abs_section_ptr
8847 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
8848 s
->contents
, s
->output_offset
,
8856 #include "elf64-target.h"