1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
33 #include "elf/ppc64.h"
34 #include "elf64-ppc.h"
36 static bfd_reloc_status_type ppc64_elf_ha_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_toc_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc64_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
55 #define TARGET_LITTLE_NAME "elf64-powerpcle"
56 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
57 #define TARGET_BIG_NAME "elf64-powerpc"
58 #define ELF_ARCH bfd_arch_powerpc
59 #define ELF_MACHINE_CODE EM_PPC64
60 #define ELF_MAXPAGESIZE 0x10000
61 #define elf_info_to_howto ppc64_elf_info_to_howto
63 #define elf_backend_want_got_sym 0
64 #define elf_backend_want_plt_sym 0
65 #define elf_backend_plt_alignment 3
66 #define elf_backend_plt_not_loaded 1
67 #define elf_backend_got_symbol_offset 0
68 #define elf_backend_got_header_size 8
69 #define elf_backend_can_gc_sections 1
70 #define elf_backend_can_refcount 1
71 #define elf_backend_rela_normal 1
73 #define bfd_elf64_mkobject ppc64_elf_mkobject
74 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
75 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
76 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
77 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
78 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
80 #define elf_backend_object_p ppc64_elf_object_p
81 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
82 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
83 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
84 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
85 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
86 #define elf_backend_check_directives ppc64_elf_check_directives
87 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
88 #define elf_backend_check_relocs ppc64_elf_check_relocs
89 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
90 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
91 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
92 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
93 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
94 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
95 #define elf_backend_relocate_section ppc64_elf_relocate_section
96 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
97 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
98 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
99 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
100 #define elf_backend_special_sections ppc64_elf_special_sections
102 /* The name of the dynamic interpreter. This is put in the .interp
104 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
106 /* The size in bytes of an entry in the procedure linkage table. */
107 #define PLT_ENTRY_SIZE 24
109 /* The initial size of the plt reserved for the dynamic linker. */
110 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
112 /* TOC base pointers offset from start of TOC. */
113 #define TOC_BASE_OFF 0x8000
115 /* Offset of tp and dtp pointers from start of TLS block. */
116 #define TP_OFFSET 0x7000
117 #define DTP_OFFSET 0x8000
119 /* .plt call stub instructions. The normal stub is like this, but
120 sometimes the .plt entry crosses a 64k boundary and we need to
121 insert an addis to adjust r12. */
122 #define PLT_CALL_STUB_SIZE (7*4)
123 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
124 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
125 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
126 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
127 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
128 /* ld %r11,xxx+16@l(%r12) */
129 #define BCTR 0x4e800420 /* bctr */
132 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
133 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
135 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
137 /* glink call stub instructions. We enter with the index in R0, and the
138 address of glink entry in CTR. From that, we can calculate PLT0. */
139 #define GLINK_CALL_STUB_SIZE (16*4)
140 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
141 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
142 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
143 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
144 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
145 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
146 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
147 /* sub %r12,%r12,%r11 */
148 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
149 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
150 /* ld %r11,xxx@l(%r12) */
151 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
154 /* ld %r11,16(%r12) */
158 #define NOP 0x60000000
160 /* Some other nops. */
161 #define CROR_151515 0x4def7b82
162 #define CROR_313131 0x4ffffb82
164 /* .glink entries for the first 32k functions are two instructions. */
165 #define LI_R0_0 0x38000000 /* li %r0,0 */
166 #define B_DOT 0x48000000 /* b . */
168 /* After that, we need two instructions to load the index, followed by
170 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
171 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
173 /* Instructions to save and restore floating point regs. */
174 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
175 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
176 #define BLR 0x4e800020 /* blr */
178 /* Since .opd is an array of descriptors and each entry will end up
179 with identical R_PPC64_RELATIVE relocs, there is really no need to
180 propagate .opd relocs; The dynamic linker should be taught to
181 relocate .opd without reloc entries. */
182 #ifndef NO_OPD_RELOCS
183 #define NO_OPD_RELOCS 0
186 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
188 /* Relocation HOWTO's. */
189 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
191 static reloc_howto_type ppc64_elf_howto_raw[] = {
192 /* This reloc does nothing. */
193 HOWTO (R_PPC64_NONE, /* type */
195 2, /* size (0 = byte, 1 = short, 2 = long) */
197 FALSE, /* pc_relative */
199 complain_overflow_dont, /* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_PPC64_NONE", /* name */
202 FALSE, /* partial_inplace */
205 FALSE), /* pcrel_offset */
207 /* A standard 32 bit relocation. */
208 HOWTO (R_PPC64_ADDR32, /* type */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
212 FALSE, /* pc_relative */
214 complain_overflow_bitfield, /* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_PPC64_ADDR32", /* name */
217 FALSE, /* partial_inplace */
219 0xffffffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
222 /* An absolute 26 bit branch; the lower two bits must be zero.
223 FIXME: we don't check that, we just clear them. */
224 HOWTO (R_PPC64_ADDR24, /* type */
226 2, /* size (0 = byte, 1 = short, 2 = long) */
228 FALSE, /* pc_relative */
230 complain_overflow_bitfield, /* complain_on_overflow */
231 bfd_elf_generic_reloc, /* special_function */
232 "R_PPC64_ADDR24", /* name */
233 FALSE, /* partial_inplace */
235 0x03fffffc, /* dst_mask */
236 FALSE), /* pcrel_offset */
238 /* A standard 16 bit relocation. */
239 HOWTO (R_PPC64_ADDR16, /* type */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
243 FALSE, /* pc_relative */
245 complain_overflow_bitfield, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_PPC64_ADDR16", /* name */
248 FALSE, /* partial_inplace */
250 0xffff, /* dst_mask */
251 FALSE), /* pcrel_offset */
253 /* A 16 bit relocation without overflow. */
254 HOWTO (R_PPC64_ADDR16_LO, /* type */
256 1, /* size (0 = byte, 1 = short, 2 = long) */
258 FALSE, /* pc_relative */
260 complain_overflow_dont,/* complain_on_overflow */
261 bfd_elf_generic_reloc, /* special_function */
262 "R_PPC64_ADDR16_LO", /* name */
263 FALSE, /* partial_inplace */
265 0xffff, /* dst_mask */
266 FALSE), /* pcrel_offset */
268 /* Bits 16-31 of an address. */
269 HOWTO (R_PPC64_ADDR16_HI, /* type */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
273 FALSE, /* pc_relative */
275 complain_overflow_dont, /* complain_on_overflow */
276 bfd_elf_generic_reloc, /* special_function */
277 "R_PPC64_ADDR16_HI", /* name */
278 FALSE, /* partial_inplace */
280 0xffff, /* dst_mask */
281 FALSE), /* pcrel_offset */
283 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
284 bits, treated as a signed number, is negative. */
285 HOWTO (R_PPC64_ADDR16_HA, /* type */
287 1, /* size (0 = byte, 1 = short, 2 = long) */
289 FALSE, /* pc_relative */
291 complain_overflow_dont, /* complain_on_overflow */
292 ppc64_elf_ha_reloc, /* special_function */
293 "R_PPC64_ADDR16_HA", /* name */
294 FALSE, /* partial_inplace */
296 0xffff, /* dst_mask */
297 FALSE), /* pcrel_offset */
299 /* An absolute 16 bit branch; the lower two bits must be zero.
300 FIXME: we don't check that, we just clear them. */
301 HOWTO (R_PPC64_ADDR14, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE, /* pc_relative */
307 complain_overflow_bitfield, /* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_PPC64_ADDR14", /* name */
310 FALSE, /* partial_inplace */
312 0x0000fffc, /* dst_mask */
313 FALSE), /* pcrel_offset */
315 /* An absolute 16 bit branch, for which bit 10 should be set to
316 indicate that the branch is expected to be taken. The lower two
317 bits must be zero. */
318 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
322 FALSE, /* pc_relative */
324 complain_overflow_bitfield, /* complain_on_overflow */
325 ppc64_elf_brtaken_reloc, /* special_function */
326 "R_PPC64_ADDR14_BRTAKEN",/* name */
327 FALSE, /* partial_inplace */
329 0x0000fffc, /* dst_mask */
330 FALSE), /* pcrel_offset */
332 /* An absolute 16 bit branch, for which bit 10 should be set to
333 indicate that the branch is not expected to be taken. The lower
334 two bits must be zero. */
335 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
339 FALSE, /* pc_relative */
341 complain_overflow_bitfield, /* complain_on_overflow */
342 ppc64_elf_brtaken_reloc, /* special_function */
343 "R_PPC64_ADDR14_BRNTAKEN",/* name */
344 FALSE, /* partial_inplace */
346 0x0000fffc, /* dst_mask */
347 FALSE), /* pcrel_offset */
349 /* A relative 26 bit branch; the lower two bits must be zero. */
350 HOWTO (R_PPC64_REL24, /* type */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
354 TRUE, /* pc_relative */
356 complain_overflow_signed, /* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_PPC64_REL24", /* name */
359 FALSE, /* partial_inplace */
361 0x03fffffc, /* dst_mask */
362 TRUE), /* pcrel_offset */
364 /* A relative 16 bit branch; the lower two bits must be zero. */
365 HOWTO (R_PPC64_REL14, /* type */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
369 TRUE, /* pc_relative */
371 complain_overflow_signed, /* complain_on_overflow */
372 bfd_elf_generic_reloc, /* special_function */
373 "R_PPC64_REL14", /* name */
374 FALSE, /* partial_inplace */
376 0x0000fffc, /* dst_mask */
377 TRUE), /* pcrel_offset */
379 /* A relative 16 bit branch. Bit 10 should be set to indicate that
380 the branch is expected to be taken. The lower two bits must be
382 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
386 TRUE, /* pc_relative */
388 complain_overflow_signed, /* complain_on_overflow */
389 ppc64_elf_brtaken_reloc, /* special_function */
390 "R_PPC64_REL14_BRTAKEN", /* name */
391 FALSE, /* partial_inplace */
393 0x0000fffc, /* dst_mask */
394 TRUE), /* pcrel_offset */
396 /* A relative 16 bit branch. Bit 10 should be set to indicate that
397 the branch is not expected to be taken. The lower two bits must
399 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
401 2, /* size (0 = byte, 1 = short, 2 = long) */
403 TRUE, /* pc_relative */
405 complain_overflow_signed, /* complain_on_overflow */
406 ppc64_elf_brtaken_reloc, /* special_function */
407 "R_PPC64_REL14_BRNTAKEN",/* name */
408 FALSE, /* partial_inplace */
410 0x0000fffc, /* dst_mask */
411 TRUE), /* pcrel_offset */
413 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
415 HOWTO (R_PPC64_GOT16, /* type */
417 1, /* size (0 = byte, 1 = short, 2 = long) */
419 FALSE, /* pc_relative */
421 complain_overflow_signed, /* complain_on_overflow */
422 ppc64_elf_unhandled_reloc, /* special_function */
423 "R_PPC64_GOT16", /* name */
424 FALSE, /* partial_inplace */
426 0xffff, /* dst_mask */
427 FALSE), /* pcrel_offset */
429 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
431 HOWTO (R_PPC64_GOT16_LO, /* type */
433 1, /* size (0 = byte, 1 = short, 2 = long) */
435 FALSE, /* pc_relative */
437 complain_overflow_dont, /* complain_on_overflow */
438 ppc64_elf_unhandled_reloc, /* special_function */
439 "R_PPC64_GOT16_LO", /* name */
440 FALSE, /* partial_inplace */
442 0xffff, /* dst_mask */
443 FALSE), /* pcrel_offset */
445 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
447 HOWTO (R_PPC64_GOT16_HI, /* type */
449 1, /* size (0 = byte, 1 = short, 2 = long) */
451 FALSE, /* pc_relative */
453 complain_overflow_dont,/* complain_on_overflow */
454 ppc64_elf_unhandled_reloc, /* special_function */
455 "R_PPC64_GOT16_HI", /* name */
456 FALSE, /* partial_inplace */
458 0xffff, /* dst_mask */
459 FALSE), /* pcrel_offset */
461 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
463 HOWTO (R_PPC64_GOT16_HA, /* type */
465 1, /* size (0 = byte, 1 = short, 2 = long) */
467 FALSE, /* pc_relative */
469 complain_overflow_dont,/* complain_on_overflow */
470 ppc64_elf_unhandled_reloc, /* special_function */
471 "R_PPC64_GOT16_HA", /* name */
472 FALSE, /* partial_inplace */
474 0xffff, /* dst_mask */
475 FALSE), /* pcrel_offset */
477 /* This is used only by the dynamic linker. The symbol should exist
478 both in the object being run and in some shared library. The
479 dynamic linker copies the data addressed by the symbol from the
480 shared library into the object, because the object being
481 run has to have the data at some particular address. */
482 HOWTO (R_PPC64_COPY, /* type */
484 0, /* this one is variable size */
486 FALSE, /* pc_relative */
488 complain_overflow_dont, /* complain_on_overflow */
489 ppc64_elf_unhandled_reloc, /* special_function */
490 "R_PPC64_COPY", /* name */
491 FALSE, /* partial_inplace */
494 FALSE), /* pcrel_offset */
496 /* Like R_PPC64_ADDR64, but used when setting global offset table
498 HOWTO (R_PPC64_GLOB_DAT, /* type */
500 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
502 FALSE, /* pc_relative */
504 complain_overflow_dont, /* complain_on_overflow */
505 ppc64_elf_unhandled_reloc, /* special_function */
506 "R_PPC64_GLOB_DAT", /* name */
507 FALSE, /* partial_inplace */
509 ONES (64), /* dst_mask */
510 FALSE), /* pcrel_offset */
512 /* Created by the link editor. Marks a procedure linkage table
513 entry for a symbol. */
514 HOWTO (R_PPC64_JMP_SLOT, /* type */
516 0, /* size (0 = byte, 1 = short, 2 = long) */
518 FALSE, /* pc_relative */
520 complain_overflow_dont, /* complain_on_overflow */
521 ppc64_elf_unhandled_reloc, /* special_function */
522 "R_PPC64_JMP_SLOT", /* name */
523 FALSE, /* partial_inplace */
526 FALSE), /* pcrel_offset */
528 /* Used only by the dynamic linker. When the object is run, this
529 doubleword64 is set to the load address of the object, plus the
531 HOWTO (R_PPC64_RELATIVE, /* type */
533 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
535 FALSE, /* pc_relative */
537 complain_overflow_dont, /* complain_on_overflow */
538 bfd_elf_generic_reloc, /* special_function */
539 "R_PPC64_RELATIVE", /* name */
540 FALSE, /* partial_inplace */
542 ONES (64), /* dst_mask */
543 FALSE), /* pcrel_offset */
545 /* Like R_PPC64_ADDR32, but may be unaligned. */
546 HOWTO (R_PPC64_UADDR32, /* type */
548 2, /* size (0 = byte, 1 = short, 2 = long) */
550 FALSE, /* pc_relative */
552 complain_overflow_bitfield, /* complain_on_overflow */
553 bfd_elf_generic_reloc, /* special_function */
554 "R_PPC64_UADDR32", /* name */
555 FALSE, /* partial_inplace */
557 0xffffffff, /* dst_mask */
558 FALSE), /* pcrel_offset */
560 /* Like R_PPC64_ADDR16, but may be unaligned. */
561 HOWTO (R_PPC64_UADDR16, /* type */
563 1, /* size (0 = byte, 1 = short, 2 = long) */
565 FALSE, /* pc_relative */
567 complain_overflow_bitfield, /* complain_on_overflow */
568 bfd_elf_generic_reloc, /* special_function */
569 "R_PPC64_UADDR16", /* name */
570 FALSE, /* partial_inplace */
572 0xffff, /* dst_mask */
573 FALSE), /* pcrel_offset */
575 /* 32-bit PC relative. */
576 HOWTO (R_PPC64_REL32, /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 TRUE, /* pc_relative */
582 /* FIXME: Verify. Was complain_overflow_bitfield. */
583 complain_overflow_signed, /* complain_on_overflow */
584 bfd_elf_generic_reloc, /* special_function */
585 "R_PPC64_REL32", /* name */
586 FALSE, /* partial_inplace */
588 0xffffffff, /* dst_mask */
589 TRUE), /* pcrel_offset */
591 /* 32-bit relocation to the symbol's procedure linkage table. */
592 HOWTO (R_PPC64_PLT32, /* type */
594 2, /* size (0 = byte, 1 = short, 2 = long) */
596 FALSE, /* pc_relative */
598 complain_overflow_bitfield, /* complain_on_overflow */
599 ppc64_elf_unhandled_reloc, /* special_function */
600 "R_PPC64_PLT32", /* name */
601 FALSE, /* partial_inplace */
603 0xffffffff, /* dst_mask */
604 FALSE), /* pcrel_offset */
606 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
607 FIXME: R_PPC64_PLTREL32 not supported. */
608 HOWTO (R_PPC64_PLTREL32, /* type */
610 2, /* size (0 = byte, 1 = short, 2 = long) */
612 TRUE, /* pc_relative */
614 complain_overflow_signed, /* complain_on_overflow */
615 bfd_elf_generic_reloc, /* special_function */
616 "R_PPC64_PLTREL32", /* name */
617 FALSE, /* partial_inplace */
619 0xffffffff, /* dst_mask */
620 TRUE), /* pcrel_offset */
622 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
624 HOWTO (R_PPC64_PLT16_LO, /* type */
626 1, /* size (0 = byte, 1 = short, 2 = long) */
628 FALSE, /* pc_relative */
630 complain_overflow_dont, /* complain_on_overflow */
631 ppc64_elf_unhandled_reloc, /* special_function */
632 "R_PPC64_PLT16_LO", /* name */
633 FALSE, /* partial_inplace */
635 0xffff, /* dst_mask */
636 FALSE), /* pcrel_offset */
638 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
640 HOWTO (R_PPC64_PLT16_HI, /* type */
642 1, /* size (0 = byte, 1 = short, 2 = long) */
644 FALSE, /* pc_relative */
646 complain_overflow_dont, /* complain_on_overflow */
647 ppc64_elf_unhandled_reloc, /* special_function */
648 "R_PPC64_PLT16_HI", /* name */
649 FALSE, /* partial_inplace */
651 0xffff, /* dst_mask */
652 FALSE), /* pcrel_offset */
654 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
656 HOWTO (R_PPC64_PLT16_HA, /* type */
658 1, /* size (0 = byte, 1 = short, 2 = long) */
660 FALSE, /* pc_relative */
662 complain_overflow_dont, /* complain_on_overflow */
663 ppc64_elf_unhandled_reloc, /* special_function */
664 "R_PPC64_PLT16_HA", /* name */
665 FALSE, /* partial_inplace */
667 0xffff, /* dst_mask */
668 FALSE), /* pcrel_offset */
670 /* 16-bit section relative relocation. */
671 HOWTO (R_PPC64_SECTOFF, /* type */
673 1, /* size (0 = byte, 1 = short, 2 = long) */
675 FALSE, /* pc_relative */
677 complain_overflow_bitfield, /* complain_on_overflow */
678 ppc64_elf_sectoff_reloc, /* special_function */
679 "R_PPC64_SECTOFF", /* name */
680 FALSE, /* partial_inplace */
682 0xffff, /* dst_mask */
683 FALSE), /* pcrel_offset */
685 /* Like R_PPC64_SECTOFF, but no overflow warning. */
686 HOWTO (R_PPC64_SECTOFF_LO, /* type */
688 1, /* size (0 = byte, 1 = short, 2 = long) */
690 FALSE, /* pc_relative */
692 complain_overflow_dont, /* complain_on_overflow */
693 ppc64_elf_sectoff_reloc, /* special_function */
694 "R_PPC64_SECTOFF_LO", /* name */
695 FALSE, /* partial_inplace */
697 0xffff, /* dst_mask */
698 FALSE), /* pcrel_offset */
700 /* 16-bit upper half section relative relocation. */
701 HOWTO (R_PPC64_SECTOFF_HI, /* type */
703 1, /* size (0 = byte, 1 = short, 2 = long) */
705 FALSE, /* pc_relative */
707 complain_overflow_dont, /* complain_on_overflow */
708 ppc64_elf_sectoff_reloc, /* special_function */
709 "R_PPC64_SECTOFF_HI", /* name */
710 FALSE, /* partial_inplace */
712 0xffff, /* dst_mask */
713 FALSE), /* pcrel_offset */
715 /* 16-bit upper half adjusted section relative relocation. */
716 HOWTO (R_PPC64_SECTOFF_HA, /* type */
718 1, /* size (0 = byte, 1 = short, 2 = long) */
720 FALSE, /* pc_relative */
722 complain_overflow_dont, /* complain_on_overflow */
723 ppc64_elf_sectoff_ha_reloc, /* special_function */
724 "R_PPC64_SECTOFF_HA", /* name */
725 FALSE, /* partial_inplace */
727 0xffff, /* dst_mask */
728 FALSE), /* pcrel_offset */
730 /* Like R_PPC64_REL24 without touching the two least significant bits. */
731 HOWTO (R_PPC64_REL30, /* type */
733 2, /* size (0 = byte, 1 = short, 2 = long) */
735 TRUE, /* pc_relative */
737 complain_overflow_dont, /* complain_on_overflow */
738 bfd_elf_generic_reloc, /* special_function */
739 "R_PPC64_REL30", /* name */
740 FALSE, /* partial_inplace */
742 0xfffffffc, /* dst_mask */
743 TRUE), /* pcrel_offset */
745 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
747 /* A standard 64-bit relocation. */
748 HOWTO (R_PPC64_ADDR64, /* type */
750 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
752 FALSE, /* pc_relative */
754 complain_overflow_dont, /* complain_on_overflow */
755 bfd_elf_generic_reloc, /* special_function */
756 "R_PPC64_ADDR64", /* name */
757 FALSE, /* partial_inplace */
759 ONES (64), /* dst_mask */
760 FALSE), /* pcrel_offset */
762 /* The bits 32-47 of an address. */
763 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
765 1, /* size (0 = byte, 1 = short, 2 = long) */
767 FALSE, /* pc_relative */
769 complain_overflow_dont, /* complain_on_overflow */
770 bfd_elf_generic_reloc, /* special_function */
771 "R_PPC64_ADDR16_HIGHER", /* name */
772 FALSE, /* partial_inplace */
774 0xffff, /* dst_mask */
775 FALSE), /* pcrel_offset */
777 /* The bits 32-47 of an address, plus 1 if the contents of the low
778 16 bits, treated as a signed number, is negative. */
779 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
781 1, /* size (0 = byte, 1 = short, 2 = long) */
783 FALSE, /* pc_relative */
785 complain_overflow_dont, /* complain_on_overflow */
786 ppc64_elf_ha_reloc, /* special_function */
787 "R_PPC64_ADDR16_HIGHERA", /* name */
788 FALSE, /* partial_inplace */
790 0xffff, /* dst_mask */
791 FALSE), /* pcrel_offset */
793 /* The bits 48-63 of an address. */
794 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
796 1, /* size (0 = byte, 1 = short, 2 = long) */
798 FALSE, /* pc_relative */
800 complain_overflow_dont, /* complain_on_overflow */
801 bfd_elf_generic_reloc, /* special_function */
802 "R_PPC64_ADDR16_HIGHEST", /* name */
803 FALSE, /* partial_inplace */
805 0xffff, /* dst_mask */
806 FALSE), /* pcrel_offset */
808 /* The bits 48-63 of an address, plus 1 if the contents of the low
809 16 bits, treated as a signed number, is negative. */
810 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
812 1, /* size (0 = byte, 1 = short, 2 = long) */
814 FALSE, /* pc_relative */
816 complain_overflow_dont, /* complain_on_overflow */
817 ppc64_elf_ha_reloc, /* special_function */
818 "R_PPC64_ADDR16_HIGHESTA", /* name */
819 FALSE, /* partial_inplace */
821 0xffff, /* dst_mask */
822 FALSE), /* pcrel_offset */
824 /* Like ADDR64, but may be unaligned. */
825 HOWTO (R_PPC64_UADDR64, /* type */
827 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
829 FALSE, /* pc_relative */
831 complain_overflow_dont, /* complain_on_overflow */
832 bfd_elf_generic_reloc, /* special_function */
833 "R_PPC64_UADDR64", /* name */
834 FALSE, /* partial_inplace */
836 ONES (64), /* dst_mask */
837 FALSE), /* pcrel_offset */
839 /* 64-bit relative relocation. */
840 HOWTO (R_PPC64_REL64, /* type */
842 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
844 TRUE, /* pc_relative */
846 complain_overflow_dont, /* complain_on_overflow */
847 bfd_elf_generic_reloc, /* special_function */
848 "R_PPC64_REL64", /* name */
849 FALSE, /* partial_inplace */
851 ONES (64), /* dst_mask */
852 TRUE), /* pcrel_offset */
854 /* 64-bit relocation to the symbol's procedure linkage table. */
855 HOWTO (R_PPC64_PLT64, /* type */
857 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
859 FALSE, /* pc_relative */
861 complain_overflow_dont, /* complain_on_overflow */
862 ppc64_elf_unhandled_reloc, /* special_function */
863 "R_PPC64_PLT64", /* name */
864 FALSE, /* partial_inplace */
866 ONES (64), /* dst_mask */
867 FALSE), /* pcrel_offset */
869 /* 64-bit PC relative relocation to the symbol's procedure linkage
871 /* FIXME: R_PPC64_PLTREL64 not supported. */
872 HOWTO (R_PPC64_PLTREL64, /* type */
874 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
876 TRUE, /* pc_relative */
878 complain_overflow_dont, /* complain_on_overflow */
879 ppc64_elf_unhandled_reloc, /* special_function */
880 "R_PPC64_PLTREL64", /* name */
881 FALSE, /* partial_inplace */
883 ONES (64), /* dst_mask */
884 TRUE), /* pcrel_offset */
886 /* 16 bit TOC-relative relocation. */
888 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
889 HOWTO (R_PPC64_TOC16, /* type */
891 1, /* size (0 = byte, 1 = short, 2 = long) */
893 FALSE, /* pc_relative */
895 complain_overflow_signed, /* complain_on_overflow */
896 ppc64_elf_toc_reloc, /* special_function */
897 "R_PPC64_TOC16", /* name */
898 FALSE, /* partial_inplace */
900 0xffff, /* dst_mask */
901 FALSE), /* pcrel_offset */
903 /* 16 bit TOC-relative relocation without overflow. */
905 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
906 HOWTO (R_PPC64_TOC16_LO, /* type */
908 1, /* size (0 = byte, 1 = short, 2 = long) */
910 FALSE, /* pc_relative */
912 complain_overflow_dont, /* complain_on_overflow */
913 ppc64_elf_toc_reloc, /* special_function */
914 "R_PPC64_TOC16_LO", /* name */
915 FALSE, /* partial_inplace */
917 0xffff, /* dst_mask */
918 FALSE), /* pcrel_offset */
920 /* 16 bit TOC-relative relocation, high 16 bits. */
922 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
923 HOWTO (R_PPC64_TOC16_HI, /* type */
925 1, /* size (0 = byte, 1 = short, 2 = long) */
927 FALSE, /* pc_relative */
929 complain_overflow_dont, /* complain_on_overflow */
930 ppc64_elf_toc_reloc, /* special_function */
931 "R_PPC64_TOC16_HI", /* name */
932 FALSE, /* partial_inplace */
934 0xffff, /* dst_mask */
935 FALSE), /* pcrel_offset */
937 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
938 contents of the low 16 bits, treated as a signed number, is
941 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
942 HOWTO (R_PPC64_TOC16_HA, /* type */
944 1, /* size (0 = byte, 1 = short, 2 = long) */
946 FALSE, /* pc_relative */
948 complain_overflow_dont, /* complain_on_overflow */
949 ppc64_elf_toc_ha_reloc, /* special_function */
950 "R_PPC64_TOC16_HA", /* name */
951 FALSE, /* partial_inplace */
953 0xffff, /* dst_mask */
954 FALSE), /* pcrel_offset */
956 /* 64-bit relocation; insert value of TOC base (.TOC.). */
958 /* R_PPC64_TOC 51 doubleword64 .TOC. */
959 HOWTO (R_PPC64_TOC, /* type */
961 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
963 FALSE, /* pc_relative */
965 complain_overflow_bitfield, /* complain_on_overflow */
966 ppc64_elf_toc64_reloc, /* special_function */
967 "R_PPC64_TOC", /* name */
968 FALSE, /* partial_inplace */
970 ONES (64), /* dst_mask */
971 FALSE), /* pcrel_offset */
973 /* Like R_PPC64_GOT16, but also informs the link editor that the
974 value to relocate may (!) refer to a PLT entry which the link
975 editor (a) may replace with the symbol value. If the link editor
976 is unable to fully resolve the symbol, it may (b) create a PLT
977 entry and store the address to the new PLT entry in the GOT.
978 This permits lazy resolution of function symbols at run time.
979 The link editor may also skip all of this and just (c) emit a
980 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
981 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
982 HOWTO (R_PPC64_PLTGOT16, /* type */
984 1, /* size (0 = byte, 1 = short, 2 = long) */
986 FALSE, /* pc_relative */
988 complain_overflow_signed, /* complain_on_overflow */
989 ppc64_elf_unhandled_reloc, /* special_function */
990 "R_PPC64_PLTGOT16", /* name */
991 FALSE, /* partial_inplace */
993 0xffff, /* dst_mask */
994 FALSE), /* pcrel_offset */
996 /* Like R_PPC64_PLTGOT16, but without overflow. */
997 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
998 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 FALSE, /* pc_relative */
1004 complain_overflow_dont, /* complain_on_overflow */
1005 ppc64_elf_unhandled_reloc, /* special_function */
1006 "R_PPC64_PLTGOT16_LO", /* name */
1007 FALSE, /* partial_inplace */
1009 0xffff, /* dst_mask */
1010 FALSE), /* pcrel_offset */
1012 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1013 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1014 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1015 16, /* rightshift */
1016 1, /* size (0 = byte, 1 = short, 2 = long) */
1018 FALSE, /* pc_relative */
1020 complain_overflow_dont, /* complain_on_overflow */
1021 ppc64_elf_unhandled_reloc, /* special_function */
1022 "R_PPC64_PLTGOT16_HI", /* name */
1023 FALSE, /* partial_inplace */
1025 0xffff, /* dst_mask */
1026 FALSE), /* pcrel_offset */
1028 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1029 1 if the contents of the low 16 bits, treated as a signed number,
1031 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1032 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1033 16, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 FALSE, /* pc_relative */
1038 complain_overflow_dont,/* complain_on_overflow */
1039 ppc64_elf_unhandled_reloc, /* special_function */
1040 "R_PPC64_PLTGOT16_HA", /* name */
1041 FALSE, /* partial_inplace */
1043 0xffff, /* dst_mask */
1044 FALSE), /* pcrel_offset */
1046 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1047 HOWTO (R_PPC64_ADDR16_DS, /* type */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE, /* pc_relative */
1053 complain_overflow_bitfield, /* complain_on_overflow */
1054 bfd_elf_generic_reloc, /* special_function */
1055 "R_PPC64_ADDR16_DS", /* name */
1056 FALSE, /* partial_inplace */
1058 0xfffc, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1061 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1062 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1064 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE, /* pc_relative */
1068 complain_overflow_dont,/* complain_on_overflow */
1069 bfd_elf_generic_reloc, /* special_function */
1070 "R_PPC64_ADDR16_LO_DS",/* name */
1071 FALSE, /* partial_inplace */
1073 0xfffc, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1076 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1077 HOWTO (R_PPC64_GOT16_DS, /* type */
1079 1, /* size (0 = byte, 1 = short, 2 = long) */
1081 FALSE, /* pc_relative */
1083 complain_overflow_signed, /* complain_on_overflow */
1084 ppc64_elf_unhandled_reloc, /* special_function */
1085 "R_PPC64_GOT16_DS", /* name */
1086 FALSE, /* partial_inplace */
1088 0xfffc, /* dst_mask */
1089 FALSE), /* pcrel_offset */
1091 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1092 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1094 1, /* size (0 = byte, 1 = short, 2 = long) */
1096 FALSE, /* pc_relative */
1098 complain_overflow_dont, /* complain_on_overflow */
1099 ppc64_elf_unhandled_reloc, /* special_function */
1100 "R_PPC64_GOT16_LO_DS", /* name */
1101 FALSE, /* partial_inplace */
1103 0xfffc, /* dst_mask */
1104 FALSE), /* pcrel_offset */
1106 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1107 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1109 1, /* size (0 = byte, 1 = short, 2 = long) */
1111 FALSE, /* pc_relative */
1113 complain_overflow_dont, /* complain_on_overflow */
1114 ppc64_elf_unhandled_reloc, /* special_function */
1115 "R_PPC64_PLT16_LO_DS", /* name */
1116 FALSE, /* partial_inplace */
1118 0xfffc, /* dst_mask */
1119 FALSE), /* pcrel_offset */
1121 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1122 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1124 1, /* size (0 = byte, 1 = short, 2 = long) */
1126 FALSE, /* pc_relative */
1128 complain_overflow_bitfield, /* complain_on_overflow */
1129 ppc64_elf_sectoff_reloc, /* special_function */
1130 "R_PPC64_SECTOFF_DS", /* name */
1131 FALSE, /* partial_inplace */
1133 0xfffc, /* dst_mask */
1134 FALSE), /* pcrel_offset */
1136 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1137 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1139 1, /* size (0 = byte, 1 = short, 2 = long) */
1141 FALSE, /* pc_relative */
1143 complain_overflow_dont, /* complain_on_overflow */
1144 ppc64_elf_sectoff_reloc, /* special_function */
1145 "R_PPC64_SECTOFF_LO_DS",/* name */
1146 FALSE, /* partial_inplace */
1148 0xfffc, /* dst_mask */
1149 FALSE), /* pcrel_offset */
1151 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1152 HOWTO (R_PPC64_TOC16_DS, /* type */
1154 1, /* size (0 = byte, 1 = short, 2 = long) */
1156 FALSE, /* pc_relative */
1158 complain_overflow_signed, /* complain_on_overflow */
1159 ppc64_elf_toc_reloc, /* special_function */
1160 "R_PPC64_TOC16_DS", /* name */
1161 FALSE, /* partial_inplace */
1163 0xfffc, /* dst_mask */
1164 FALSE), /* pcrel_offset */
1166 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1167 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1169 1, /* size (0 = byte, 1 = short, 2 = long) */
1171 FALSE, /* pc_relative */
1173 complain_overflow_dont, /* complain_on_overflow */
1174 ppc64_elf_toc_reloc, /* special_function */
1175 "R_PPC64_TOC16_LO_DS", /* name */
1176 FALSE, /* partial_inplace */
1178 0xfffc, /* dst_mask */
1179 FALSE), /* pcrel_offset */
1181 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1182 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1183 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1185 1, /* size (0 = byte, 1 = short, 2 = long) */
1187 FALSE, /* pc_relative */
1189 complain_overflow_signed, /* complain_on_overflow */
1190 ppc64_elf_unhandled_reloc, /* special_function */
1191 "R_PPC64_PLTGOT16_DS", /* name */
1192 FALSE, /* partial_inplace */
1194 0xfffc, /* dst_mask */
1195 FALSE), /* pcrel_offset */
1197 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1198 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1199 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1201 1, /* size (0 = byte, 1 = short, 2 = long) */
1203 FALSE, /* pc_relative */
1205 complain_overflow_dont, /* complain_on_overflow */
1206 ppc64_elf_unhandled_reloc, /* special_function */
1207 "R_PPC64_PLTGOT16_LO_DS",/* name */
1208 FALSE, /* partial_inplace */
1210 0xfffc, /* dst_mask */
1211 FALSE), /* pcrel_offset */
1213 /* Marker reloc for TLS. */
1216 2, /* size (0 = byte, 1 = short, 2 = long) */
1218 FALSE, /* pc_relative */
1220 complain_overflow_dont, /* complain_on_overflow */
1221 bfd_elf_generic_reloc, /* special_function */
1222 "R_PPC64_TLS", /* name */
1223 FALSE, /* partial_inplace */
1226 FALSE), /* pcrel_offset */
1228 /* Computes the load module index of the load module that contains the
1229 definition of its TLS sym. */
1230 HOWTO (R_PPC64_DTPMOD64,
1232 4, /* size (0 = byte, 1 = short, 2 = long) */
1234 FALSE, /* pc_relative */
1236 complain_overflow_dont, /* complain_on_overflow */
1237 ppc64_elf_unhandled_reloc, /* special_function */
1238 "R_PPC64_DTPMOD64", /* name */
1239 FALSE, /* partial_inplace */
1241 ONES (64), /* dst_mask */
1242 FALSE), /* pcrel_offset */
1244 /* Computes a dtv-relative displacement, the difference between the value
1245 of sym+add and the base address of the thread-local storage block that
1246 contains the definition of sym, minus 0x8000. */
1247 HOWTO (R_PPC64_DTPREL64,
1249 4, /* size (0 = byte, 1 = short, 2 = long) */
1251 FALSE, /* pc_relative */
1253 complain_overflow_dont, /* complain_on_overflow */
1254 ppc64_elf_unhandled_reloc, /* special_function */
1255 "R_PPC64_DTPREL64", /* name */
1256 FALSE, /* partial_inplace */
1258 ONES (64), /* dst_mask */
1259 FALSE), /* pcrel_offset */
1261 /* A 16 bit dtprel reloc. */
1262 HOWTO (R_PPC64_DTPREL16,
1264 1, /* size (0 = byte, 1 = short, 2 = long) */
1266 FALSE, /* pc_relative */
1268 complain_overflow_signed, /* complain_on_overflow */
1269 ppc64_elf_unhandled_reloc, /* special_function */
1270 "R_PPC64_DTPREL16", /* name */
1271 FALSE, /* partial_inplace */
1273 0xffff, /* dst_mask */
1274 FALSE), /* pcrel_offset */
1276 /* Like DTPREL16, but no overflow. */
1277 HOWTO (R_PPC64_DTPREL16_LO,
1279 1, /* size (0 = byte, 1 = short, 2 = long) */
1281 FALSE, /* pc_relative */
1283 complain_overflow_dont, /* complain_on_overflow */
1284 ppc64_elf_unhandled_reloc, /* special_function */
1285 "R_PPC64_DTPREL16_LO", /* name */
1286 FALSE, /* partial_inplace */
1288 0xffff, /* dst_mask */
1289 FALSE), /* pcrel_offset */
1291 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1292 HOWTO (R_PPC64_DTPREL16_HI,
1293 16, /* rightshift */
1294 1, /* size (0 = byte, 1 = short, 2 = long) */
1296 FALSE, /* pc_relative */
1298 complain_overflow_dont, /* complain_on_overflow */
1299 ppc64_elf_unhandled_reloc, /* special_function */
1300 "R_PPC64_DTPREL16_HI", /* name */
1301 FALSE, /* partial_inplace */
1303 0xffff, /* dst_mask */
1304 FALSE), /* pcrel_offset */
1306 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1307 HOWTO (R_PPC64_DTPREL16_HA,
1308 16, /* rightshift */
1309 1, /* size (0 = byte, 1 = short, 2 = long) */
1311 FALSE, /* pc_relative */
1313 complain_overflow_dont, /* complain_on_overflow */
1314 ppc64_elf_unhandled_reloc, /* special_function */
1315 "R_PPC64_DTPREL16_HA", /* name */
1316 FALSE, /* partial_inplace */
1318 0xffff, /* dst_mask */
1319 FALSE), /* pcrel_offset */
1321 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1322 HOWTO (R_PPC64_DTPREL16_HIGHER,
1323 32, /* rightshift */
1324 1, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE, /* pc_relative */
1328 complain_overflow_dont, /* complain_on_overflow */
1329 ppc64_elf_unhandled_reloc, /* special_function */
1330 "R_PPC64_DTPREL16_HIGHER", /* name */
1331 FALSE, /* partial_inplace */
1333 0xffff, /* dst_mask */
1334 FALSE), /* pcrel_offset */
1336 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1337 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1338 32, /* rightshift */
1339 1, /* size (0 = byte, 1 = short, 2 = long) */
1341 FALSE, /* pc_relative */
1343 complain_overflow_dont, /* complain_on_overflow */
1344 ppc64_elf_unhandled_reloc, /* special_function */
1345 "R_PPC64_DTPREL16_HIGHERA", /* name */
1346 FALSE, /* partial_inplace */
1348 0xffff, /* dst_mask */
1349 FALSE), /* pcrel_offset */
1351 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1352 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1353 48, /* rightshift */
1354 1, /* size (0 = byte, 1 = short, 2 = long) */
1356 FALSE, /* pc_relative */
1358 complain_overflow_dont, /* complain_on_overflow */
1359 ppc64_elf_unhandled_reloc, /* special_function */
1360 "R_PPC64_DTPREL16_HIGHEST", /* name */
1361 FALSE, /* partial_inplace */
1363 0xffff, /* dst_mask */
1364 FALSE), /* pcrel_offset */
1366 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1367 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1368 48, /* rightshift */
1369 1, /* size (0 = byte, 1 = short, 2 = long) */
1371 FALSE, /* pc_relative */
1373 complain_overflow_dont, /* complain_on_overflow */
1374 ppc64_elf_unhandled_reloc, /* special_function */
1375 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1376 FALSE, /* partial_inplace */
1378 0xffff, /* dst_mask */
1379 FALSE), /* pcrel_offset */
1381 /* Like DTPREL16, but for insns with a DS field. */
1382 HOWTO (R_PPC64_DTPREL16_DS,
1384 1, /* size (0 = byte, 1 = short, 2 = long) */
1386 FALSE, /* pc_relative */
1388 complain_overflow_signed, /* complain_on_overflow */
1389 ppc64_elf_unhandled_reloc, /* special_function */
1390 "R_PPC64_DTPREL16_DS", /* name */
1391 FALSE, /* partial_inplace */
1393 0xfffc, /* dst_mask */
1394 FALSE), /* pcrel_offset */
1396 /* Like DTPREL16_DS, but no overflow. */
1397 HOWTO (R_PPC64_DTPREL16_LO_DS,
1399 1, /* size (0 = byte, 1 = short, 2 = long) */
1401 FALSE, /* pc_relative */
1403 complain_overflow_dont, /* complain_on_overflow */
1404 ppc64_elf_unhandled_reloc, /* special_function */
1405 "R_PPC64_DTPREL16_LO_DS", /* name */
1406 FALSE, /* partial_inplace */
1408 0xfffc, /* dst_mask */
1409 FALSE), /* pcrel_offset */
1411 /* Computes a tp-relative displacement, the difference between the value of
1412 sym+add and the value of the thread pointer (r13). */
1413 HOWTO (R_PPC64_TPREL64,
1415 4, /* size (0 = byte, 1 = short, 2 = long) */
1417 FALSE, /* pc_relative */
1419 complain_overflow_dont, /* complain_on_overflow */
1420 ppc64_elf_unhandled_reloc, /* special_function */
1421 "R_PPC64_TPREL64", /* name */
1422 FALSE, /* partial_inplace */
1424 ONES (64), /* dst_mask */
1425 FALSE), /* pcrel_offset */
1427 /* A 16 bit tprel reloc. */
1428 HOWTO (R_PPC64_TPREL16,
1430 1, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE, /* pc_relative */
1434 complain_overflow_signed, /* complain_on_overflow */
1435 ppc64_elf_unhandled_reloc, /* special_function */
1436 "R_PPC64_TPREL16", /* name */
1437 FALSE, /* partial_inplace */
1439 0xffff, /* dst_mask */
1440 FALSE), /* pcrel_offset */
1442 /* Like TPREL16, but no overflow. */
1443 HOWTO (R_PPC64_TPREL16_LO,
1445 1, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE, /* pc_relative */
1449 complain_overflow_dont, /* complain_on_overflow */
1450 ppc64_elf_unhandled_reloc, /* special_function */
1451 "R_PPC64_TPREL16_LO", /* name */
1452 FALSE, /* partial_inplace */
1454 0xffff, /* dst_mask */
1455 FALSE), /* pcrel_offset */
1457 /* Like TPREL16_LO, but next higher group of 16 bits. */
1458 HOWTO (R_PPC64_TPREL16_HI,
1459 16, /* rightshift */
1460 1, /* size (0 = byte, 1 = short, 2 = long) */
1462 FALSE, /* pc_relative */
1464 complain_overflow_dont, /* complain_on_overflow */
1465 ppc64_elf_unhandled_reloc, /* special_function */
1466 "R_PPC64_TPREL16_HI", /* name */
1467 FALSE, /* partial_inplace */
1469 0xffff, /* dst_mask */
1470 FALSE), /* pcrel_offset */
1472 /* Like TPREL16_HI, but adjust for low 16 bits. */
1473 HOWTO (R_PPC64_TPREL16_HA,
1474 16, /* rightshift */
1475 1, /* size (0 = byte, 1 = short, 2 = long) */
1477 FALSE, /* pc_relative */
1479 complain_overflow_dont, /* complain_on_overflow */
1480 ppc64_elf_unhandled_reloc, /* special_function */
1481 "R_PPC64_TPREL16_HA", /* name */
1482 FALSE, /* partial_inplace */
1484 0xffff, /* dst_mask */
1485 FALSE), /* pcrel_offset */
1487 /* Like TPREL16_HI, but next higher group of 16 bits. */
1488 HOWTO (R_PPC64_TPREL16_HIGHER,
1489 32, /* rightshift */
1490 1, /* size (0 = byte, 1 = short, 2 = long) */
1492 FALSE, /* pc_relative */
1494 complain_overflow_dont, /* complain_on_overflow */
1495 ppc64_elf_unhandled_reloc, /* special_function */
1496 "R_PPC64_TPREL16_HIGHER", /* name */
1497 FALSE, /* partial_inplace */
1499 0xffff, /* dst_mask */
1500 FALSE), /* pcrel_offset */
1502 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1503 HOWTO (R_PPC64_TPREL16_HIGHERA,
1504 32, /* rightshift */
1505 1, /* size (0 = byte, 1 = short, 2 = long) */
1507 FALSE, /* pc_relative */
1509 complain_overflow_dont, /* complain_on_overflow */
1510 ppc64_elf_unhandled_reloc, /* special_function */
1511 "R_PPC64_TPREL16_HIGHERA", /* name */
1512 FALSE, /* partial_inplace */
1514 0xffff, /* dst_mask */
1515 FALSE), /* pcrel_offset */
1517 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1518 HOWTO (R_PPC64_TPREL16_HIGHEST,
1519 48, /* rightshift */
1520 1, /* size (0 = byte, 1 = short, 2 = long) */
1522 FALSE, /* pc_relative */
1524 complain_overflow_dont, /* complain_on_overflow */
1525 ppc64_elf_unhandled_reloc, /* special_function */
1526 "R_PPC64_TPREL16_HIGHEST", /* name */
1527 FALSE, /* partial_inplace */
1529 0xffff, /* dst_mask */
1530 FALSE), /* pcrel_offset */
1532 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1533 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1534 48, /* rightshift */
1535 1, /* size (0 = byte, 1 = short, 2 = long) */
1537 FALSE, /* pc_relative */
1539 complain_overflow_dont, /* complain_on_overflow */
1540 ppc64_elf_unhandled_reloc, /* special_function */
1541 "R_PPC64_TPREL16_HIGHESTA", /* name */
1542 FALSE, /* partial_inplace */
1544 0xffff, /* dst_mask */
1545 FALSE), /* pcrel_offset */
1547 /* Like TPREL16, but for insns with a DS field. */
1548 HOWTO (R_PPC64_TPREL16_DS,
1550 1, /* size (0 = byte, 1 = short, 2 = long) */
1552 FALSE, /* pc_relative */
1554 complain_overflow_signed, /* complain_on_overflow */
1555 ppc64_elf_unhandled_reloc, /* special_function */
1556 "R_PPC64_TPREL16_DS", /* name */
1557 FALSE, /* partial_inplace */
1559 0xfffc, /* dst_mask */
1560 FALSE), /* pcrel_offset */
1562 /* Like TPREL16_DS, but no overflow. */
1563 HOWTO (R_PPC64_TPREL16_LO_DS,
1565 1, /* size (0 = byte, 1 = short, 2 = long) */
1567 FALSE, /* pc_relative */
1569 complain_overflow_dont, /* complain_on_overflow */
1570 ppc64_elf_unhandled_reloc, /* special_function */
1571 "R_PPC64_TPREL16_LO_DS", /* name */
1572 FALSE, /* partial_inplace */
1574 0xfffc, /* dst_mask */
1575 FALSE), /* pcrel_offset */
1577 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1578 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1579 to the first entry relative to the TOC base (r2). */
1580 HOWTO (R_PPC64_GOT_TLSGD16,
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE, /* pc_relative */
1586 complain_overflow_signed, /* complain_on_overflow */
1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_GOT_TLSGD16", /* name */
1589 FALSE, /* partial_inplace */
1591 0xffff, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1594 /* Like GOT_TLSGD16, but no overflow. */
1595 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE, /* pc_relative */
1601 complain_overflow_dont, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc, /* special_function */
1603 "R_PPC64_GOT_TLSGD16_LO", /* name */
1604 FALSE, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1609 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1610 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1611 16, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE, /* pc_relative */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc, /* special_function */
1618 "R_PPC64_GOT_TLSGD16_HI", /* name */
1619 FALSE, /* partial_inplace */
1621 0xffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1624 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1625 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1626 16, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE, /* pc_relative */
1631 complain_overflow_dont, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc, /* special_function */
1633 "R_PPC64_GOT_TLSGD16_HA", /* name */
1634 FALSE, /* partial_inplace */
1636 0xffff, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1639 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1640 with values (sym+add)@dtpmod and zero, and computes the offset to the
1641 first entry relative to the TOC base (r2). */
1642 HOWTO (R_PPC64_GOT_TLSLD16,
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1646 FALSE, /* pc_relative */
1648 complain_overflow_signed, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_GOT_TLSLD16", /* name */
1651 FALSE, /* partial_inplace */
1653 0xffff, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1656 /* Like GOT_TLSLD16, but no overflow. */
1657 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1659 1, /* size (0 = byte, 1 = short, 2 = long) */
1661 FALSE, /* pc_relative */
1663 complain_overflow_dont, /* complain_on_overflow */
1664 ppc64_elf_unhandled_reloc, /* special_function */
1665 "R_PPC64_GOT_TLSLD16_LO", /* name */
1666 FALSE, /* partial_inplace */
1668 0xffff, /* dst_mask */
1669 FALSE), /* pcrel_offset */
1671 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1672 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1673 16, /* rightshift */
1674 1, /* size (0 = byte, 1 = short, 2 = long) */
1676 FALSE, /* pc_relative */
1678 complain_overflow_dont, /* complain_on_overflow */
1679 ppc64_elf_unhandled_reloc, /* special_function */
1680 "R_PPC64_GOT_TLSLD16_HI", /* name */
1681 FALSE, /* partial_inplace */
1683 0xffff, /* dst_mask */
1684 FALSE), /* pcrel_offset */
1686 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1687 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1688 16, /* rightshift */
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1691 FALSE, /* pc_relative */
1693 complain_overflow_dont, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc, /* special_function */
1695 "R_PPC64_GOT_TLSLD16_HA", /* name */
1696 FALSE, /* partial_inplace */
1698 0xffff, /* dst_mask */
1699 FALSE), /* pcrel_offset */
1701 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1702 the offset to the entry relative to the TOC base (r2). */
1703 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1705 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 FALSE, /* pc_relative */
1709 complain_overflow_signed, /* complain_on_overflow */
1710 ppc64_elf_unhandled_reloc, /* special_function */
1711 "R_PPC64_GOT_DTPREL16_DS", /* name */
1712 FALSE, /* partial_inplace */
1714 0xfffc, /* dst_mask */
1715 FALSE), /* pcrel_offset */
1717 /* Like GOT_DTPREL16_DS, but no overflow. */
1718 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1720 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 FALSE, /* pc_relative */
1724 complain_overflow_dont, /* complain_on_overflow */
1725 ppc64_elf_unhandled_reloc, /* special_function */
1726 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1727 FALSE, /* partial_inplace */
1729 0xfffc, /* dst_mask */
1730 FALSE), /* pcrel_offset */
1732 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1733 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1734 16, /* rightshift */
1735 1, /* size (0 = byte, 1 = short, 2 = long) */
1737 FALSE, /* pc_relative */
1739 complain_overflow_dont, /* complain_on_overflow */
1740 ppc64_elf_unhandled_reloc, /* special_function */
1741 "R_PPC64_GOT_DTPREL16_HI", /* name */
1742 FALSE, /* partial_inplace */
1744 0xffff, /* dst_mask */
1745 FALSE), /* pcrel_offset */
1747 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1748 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1749 16, /* rightshift */
1750 1, /* size (0 = byte, 1 = short, 2 = long) */
1752 FALSE, /* pc_relative */
1754 complain_overflow_dont, /* complain_on_overflow */
1755 ppc64_elf_unhandled_reloc, /* special_function */
1756 "R_PPC64_GOT_DTPREL16_HA", /* name */
1757 FALSE, /* partial_inplace */
1759 0xffff, /* dst_mask */
1760 FALSE), /* pcrel_offset */
1762 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1763 offset to the entry relative to the TOC base (r2). */
1764 HOWTO (R_PPC64_GOT_TPREL16_DS,
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1768 FALSE, /* pc_relative */
1770 complain_overflow_signed, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc, /* special_function */
1772 "R_PPC64_GOT_TPREL16_DS", /* name */
1773 FALSE, /* partial_inplace */
1775 0xfffc, /* dst_mask */
1776 FALSE), /* pcrel_offset */
1778 /* Like GOT_TPREL16_DS, but no overflow. */
1779 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1783 FALSE, /* pc_relative */
1785 complain_overflow_dont, /* complain_on_overflow */
1786 ppc64_elf_unhandled_reloc, /* special_function */
1787 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1788 FALSE, /* partial_inplace */
1790 0xfffc, /* dst_mask */
1791 FALSE), /* pcrel_offset */
1793 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1794 HOWTO (R_PPC64_GOT_TPREL16_HI,
1795 16, /* rightshift */
1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1798 FALSE, /* pc_relative */
1800 complain_overflow_dont, /* complain_on_overflow */
1801 ppc64_elf_unhandled_reloc, /* special_function */
1802 "R_PPC64_GOT_TPREL16_HI", /* name */
1803 FALSE, /* partial_inplace */
1805 0xffff, /* dst_mask */
1806 FALSE), /* pcrel_offset */
1808 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1809 HOWTO (R_PPC64_GOT_TPREL16_HA,
1810 16, /* rightshift */
1811 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 FALSE, /* pc_relative */
1815 complain_overflow_dont, /* complain_on_overflow */
1816 ppc64_elf_unhandled_reloc, /* special_function */
1817 "R_PPC64_GOT_TPREL16_HA", /* name */
1818 FALSE, /* partial_inplace */
1820 0xffff, /* dst_mask */
1821 FALSE), /* pcrel_offset */
1823 /* GNU extension to record C++ vtable hierarchy. */
1824 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1826 0, /* size (0 = byte, 1 = short, 2 = long) */
1828 FALSE, /* pc_relative */
1830 complain_overflow_dont, /* complain_on_overflow */
1831 NULL, /* special_function */
1832 "R_PPC64_GNU_VTINHERIT", /* name */
1833 FALSE, /* partial_inplace */
1836 FALSE), /* pcrel_offset */
1838 /* GNU extension to record C++ vtable member usage. */
1839 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1841 0, /* size (0 = byte, 1 = short, 2 = long) */
1843 FALSE, /* pc_relative */
1845 complain_overflow_dont, /* complain_on_overflow */
1846 NULL, /* special_function */
1847 "R_PPC64_GNU_VTENTRY", /* name */
1848 FALSE, /* partial_inplace */
1851 FALSE), /* pcrel_offset */
1855 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1859 ppc_howto_init (void)
1861 unsigned int i, type;
1864 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1867 type = ppc64_elf_howto_raw[i].type;
1868 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1869 / sizeof (ppc64_elf_howto_table[0])));
1870 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1874 static reloc_howto_type *
1875 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1876 bfd_reloc_code_real_type code)
1878 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1880 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1881 /* Initialize howto table if needed. */
1889 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1891 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1893 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1895 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1897 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1899 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1901 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1903 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1905 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1907 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1909 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1911 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1913 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1915 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1917 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1919 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1921 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1923 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1925 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1927 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1929 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1931 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1933 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1935 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1937 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1939 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1941 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1943 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1945 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1947 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1949 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1951 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1953 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1955 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1957 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1959 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1961 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1963 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1965 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1967 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1969 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1971 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1973 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1975 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1977 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1979 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1981 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1983 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1985 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1987 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
1989 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
1991 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
1993 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
1995 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
1997 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
1999 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2001 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2003 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2005 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2007 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2009 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2011 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2013 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2015 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2017 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2019 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2021 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2023 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2025 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2027 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2029 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2031 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2033 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2035 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2037 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2039 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2041 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2043 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2045 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2047 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2049 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2051 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2053 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2055 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2057 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2059 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2061 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2063 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2065 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2067 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2069 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2071 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2073 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2075 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2077 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2079 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2081 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2083 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2085 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2087 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2089 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2093 return ppc64_elf_howto_table[r];
2096 /* Set the howto pointer for a PowerPC ELF reloc. */
2099 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2100 Elf_Internal_Rela *dst)
2104 /* Initialize howto table if needed. */
2105 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2108 type = ELF64_R_TYPE (dst->r_info);
2109 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2110 / sizeof (ppc64_elf_howto_table[0])));
2111 cache_ptr->howto = ppc64_elf_howto_table[type];
2114 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2116 static bfd_reloc_status_type
2117 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2118 void *data, asection *input_section,
2119 bfd *output_bfd, char **error_message)
2121 /* If this is a relocatable link (output_bfd test tells us), just
2122 call the generic function. Any adjustment will be done at final
2124 if (output_bfd != NULL)
2125 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2126 input_section, output_bfd, error_message);
2128 /* Adjust the addend for sign extension of the low 16 bits.
2129 We won't actually be using the low 16 bits, so trashing them
2131 reloc_entry->addend += 0x8000;
2132 return bfd_reloc_continue;
2135 static bfd_reloc_status_type
2136 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2137 void *data, asection *input_section,
2138 bfd *output_bfd, char **error_message)
2141 enum elf_ppc64_reloc_type r_type;
2142 bfd_size_type octets;
2143 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2144 bfd_boolean is_power4 = FALSE;
2146 /* If this is a relocatable link (output_bfd test tells us), just
2147 call the generic function. Any adjustment will be done at final
2149 if (output_bfd != NULL)
2150 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2151 input_section, output_bfd, error_message);
2153 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2154 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2155 insn &= ~(0x01 << 21);
2156 r_type = reloc_entry->howto->type;
2157 if (r_type == R_PPC64_ADDR14_BRTAKEN
2158 || r_type == R_PPC64_REL14_BRTAKEN)
2159 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2163 /* Set 'a' bit. This is 0b00010 in BO field for branch
2164 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2165 for branch on CTR insns (BO == 1a00t or 1a01t). */
2166 if ((insn & (0x14 << 21)) == (0x04 << 21))
2168 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2171 return bfd_reloc_continue;
2178 if (!bfd_is_com_section (symbol->section))
2179 target = symbol->value;
2180 target += symbol->section->output_section->vma;
2181 target += symbol->section->output_offset;
2182 target += reloc_entry->addend;
2184 from = (reloc_entry->address
2185 + input_section->output_offset
2186 + input_section->output_section->vma);
2188 /* Invert 'y' bit if not the default. */
2189 if ((bfd_signed_vma) (target - from) < 0)
2192 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2193 return bfd_reloc_continue;
2196 static bfd_reloc_status_type
2197 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2198 void *data, asection *input_section,
2199 bfd *output_bfd, char **error_message)
2201 /* If this is a relocatable link (output_bfd test tells us), just
2202 call the generic function. Any adjustment will be done at final
2204 if (output_bfd != NULL)
2205 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2206 input_section, output_bfd, error_message);
2208 /* Subtract the symbol section base address. */
2209 reloc_entry->addend -= symbol->section->output_section->vma;
2210 return bfd_reloc_continue;
2213 static bfd_reloc_status_type
2214 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2215 void *data, asection *input_section,
2216 bfd *output_bfd, char **error_message)
2218 /* If this is a relocatable link (output_bfd test tells us), just
2219 call the generic function. Any adjustment will be done at final
2221 if (output_bfd != NULL)
2222 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2223 input_section, output_bfd, error_message);
2225 /* Subtract the symbol section base address. */
2226 reloc_entry->addend -= symbol->section->output_section->vma;
2228 /* Adjust the addend for sign extension of the low 16 bits. */
2229 reloc_entry->addend += 0x8000;
2230 return bfd_reloc_continue;
2233 static bfd_reloc_status_type
2234 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2235 void *data, asection *input_section,
2236 bfd *output_bfd, char **error_message)
2240 /* If this is a relocatable link (output_bfd test tells us), just
2241 call the generic function. Any adjustment will be done at final
2243 if (output_bfd != NULL)
2244 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2245 input_section, output_bfd, error_message);
2247 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2249 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2251 /* Subtract the TOC base address. */
2252 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2253 return bfd_reloc_continue;
2256 static bfd_reloc_status_type
2257 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2258 void *data, asection *input_section,
2259 bfd *output_bfd, char **error_message)
2263 /* If this is a relocatable link (output_bfd test tells us), just
2264 call the generic function. Any adjustment will be done at final
2266 if (output_bfd != NULL)
2267 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2268 input_section, output_bfd, error_message);
2270 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2272 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2274 /* Subtract the TOC base address. */
2275 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2277 /* Adjust the addend for sign extension of the low 16 bits. */
2278 reloc_entry->addend += 0x8000;
2279 return bfd_reloc_continue;
2282 static bfd_reloc_status_type
2283 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2284 void *data, asection *input_section,
2285 bfd *output_bfd, char **error_message)
2288 bfd_size_type octets;
2290 /* If this is a relocatable link (output_bfd test tells us), just
2291 call the generic function. Any adjustment will be done at final
2293 if (output_bfd != NULL)
2294 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2295 input_section, output_bfd, error_message);
2297 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2299 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2301 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2302 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2303 return bfd_reloc_ok;
2306 static bfd_reloc_status_type
2307 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2308 void *data, asection *input_section,
2309 bfd *output_bfd, char **error_message)
2311 /* If this is a relocatable link (output_bfd test tells us), just
2312 call the generic function. Any adjustment will be done at final
2314 if (output_bfd != NULL)
2315 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2316 input_section, output_bfd, error_message);
2318 if (error_message != NULL)
2320 static char buf[60];
2321 sprintf (buf, "generic linker can't handle %s",
2322 reloc_entry->howto->name);
2323 *error_message = buf;
2325 return bfd_reloc_dangerous;
2328 struct ppc64_elf_obj_tdata
2330 struct elf_obj_tdata elf;
2332 /* Shortcuts to dynamic linker sections. */
2336 /* Used during garbage collection. We attach global symbols defined
2337 on removed .opd entries to this section so that the sym is removed. */
2338 asection *deleted_section;
2340 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2341 sections means we potentially need one of these for each input bfd. */
2343 bfd_signed_vma refcount;
2348 #define ppc64_elf_tdata(bfd) \
2349 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2351 #define ppc64_tlsld_got(bfd) \
2352 (&ppc64_elf_tdata (bfd)->tlsld_got)
2354 /* Override the generic function because we store some extras. */
2357 ppc64_elf_mkobject (bfd *abfd)
2359 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2360 abfd->tdata.any = bfd_zalloc (abfd, amt);
2361 if (abfd->tdata.any == NULL)
2366 /* Fix bad default arch selected for a 64 bit input bfd when the
2367 default is 32 bit. */
2370 ppc64_elf_object_p (bfd *abfd)
2372 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2374 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2376 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2378 /* Relies on arch after 32 bit default being 64 bit default. */
2379 abfd->arch_info = abfd->arch_info->next;
2380 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2386 /* Support for core dump NOTE sections. */
2389 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2391 size_t offset, size;
2393 if (note->descsz != 504)
2397 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2400 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2406 /* Make a ".reg/999" section. */
2407 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2408 size, note->descpos + offset);
2412 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2414 if (note->descsz != 136)
2417 elf_tdata (abfd)->core_program
2418 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2419 elf_tdata (abfd)->core_command
2420 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2425 /* Merge backend specific data from an object file to the output
2426 object file when linking. */
2429 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2431 /* Check if we have the same endianess. */
2432 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2433 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2434 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2438 if (bfd_big_endian (ibfd))
2439 msg = _("%B: compiled for a big endian system "
2440 "and target is little endian");
2442 msg = _("%B: compiled for a little endian system "
2443 "and target is big endian");
2445 (*_bfd_error_handler) (msg, ibfd);
2447 bfd_set_error (bfd_error_wrong_format);
2454 /* Add extra PPC sections. */
2456 static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2458 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2459 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2460 { ".plt", 4, 0, SHT_NOBITS, 0 },
2461 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2462 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2463 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2464 { NULL, 0, 0, 0, 0 }
2467 struct _ppc64_elf_section_data
2469 struct bfd_elf_section_data elf;
2471 /* An array with one entry for each opd function descriptor. */
2474 /* Points to the function code section for local opd entries. */
2475 asection **func_sec;
2476 /* After editing .opd, adjust references to opd local syms. */
2480 /* An array for toc sections, indexed by offset/8.
2481 Specifies the relocation symbol index used at a given toc offset. */
2485 #define ppc64_elf_section_data(sec) \
2486 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2489 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2491 struct _ppc64_elf_section_data *sdata;
2492 bfd_size_type amt = sizeof (*sdata);
2494 sdata = bfd_zalloc (abfd, amt);
2497 sec->used_by_bfd = sdata;
2499 return _bfd_elf_new_section_hook (abfd, sec);
2503 get_opd_info (asection * sec)
2506 && ppc64_elf_section_data (sec) != NULL
2507 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2508 return ppc64_elf_section_data (sec)->opd.adjust;
2512 /* The following functions are specific to the ELF linker, while
2513 functions above are used generally. Those named ppc64_elf_* are
2514 called by the main ELF linker code. They appear in this file more
2515 or less in the order in which they are called. eg.
2516 ppc64_elf_check_relocs is called early in the link process,
2517 ppc64_elf_finish_dynamic_sections is one of the last functions
2520 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2521 functions have both a function code symbol and a function descriptor
2522 symbol. A call to foo in a relocatable object file looks like:
2529 The function definition in another object file might be:
2533 . .quad .TOC.@tocbase
2539 When the linker resolves the call during a static link, the branch
2540 unsurprisingly just goes to .foo and the .opd information is unused.
2541 If the function definition is in a shared library, things are a little
2542 different: The call goes via a plt call stub, the opd information gets
2543 copied to the plt, and the linker patches the nop.
2551 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2552 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2553 . std 2,40(1) # this is the general idea
2561 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2563 The "reloc ()" notation is supposed to indicate that the linker emits
2564 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2567 What are the difficulties here? Well, firstly, the relocations
2568 examined by the linker in check_relocs are against the function code
2569 sym .foo, while the dynamic relocation in the plt is emitted against
2570 the function descriptor symbol, foo. Somewhere along the line, we need
2571 to carefully copy dynamic link information from one symbol to the other.
2572 Secondly, the generic part of the elf linker will make .foo a dynamic
2573 symbol as is normal for most other backends. We need foo dynamic
2574 instead, at least for an application final link. However, when
2575 creating a shared library containing foo, we need to have both symbols
2576 dynamic so that references to .foo are satisfied during the early
2577 stages of linking. Otherwise the linker might decide to pull in a
2578 definition from some other object, eg. a static library.
2580 Update: As of August 2004, we support a new convention. Function
2581 calls may use the function descriptor symbol, ie. "bl foo". This
2582 behaves exactly as "bl .foo". */
2584 /* The linker needs to keep track of the number of relocs that it
2585 decides to copy as dynamic relocs in check_relocs for each symbol.
2586 This is so that it can later discard them if they are found to be
2587 unnecessary. We store the information in a field extending the
2588 regular ELF linker hash table. */
2590 struct ppc_dyn_relocs
2592 struct ppc_dyn_relocs *next;
2594 /* The input section of the reloc. */
2597 /* Total number of relocs copied for the input section. */
2598 bfd_size_type count;
2600 /* Number of pc-relative relocs copied for the input section. */
2601 bfd_size_type pc_count;
2604 /* Track GOT entries needed for a given symbol. We might need more
2605 than one got entry per symbol. */
2608 struct got_entry *next;
2610 /* The symbol addend that we'll be placing in the GOT. */
2613 /* Unlike other ELF targets, we use separate GOT entries for the same
2614 symbol referenced from different input files. This is to support
2615 automatic multiple TOC/GOT sections, where the TOC base can vary
2616 from one input file to another.
2618 Point to the BFD owning this GOT entry. */
2621 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2622 TLS_TPREL or TLS_DTPREL for tls entries. */
2625 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2628 bfd_signed_vma refcount;
2633 /* The same for PLT. */
2636 struct plt_entry *next;
2642 bfd_signed_vma refcount;
2647 /* Of those relocs that might be copied as dynamic relocs, this macro
2648 selects those that must be copied when linking a shared library,
2649 even when the symbol is local. */
2651 #define MUST_BE_DYN_RELOC(RTYPE) \
2652 ((RTYPE) != R_PPC64_REL32 \
2653 && (RTYPE) != R_PPC64_REL64 \
2654 && (RTYPE) != R_PPC64_REL30)
2656 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2657 copying dynamic variables from a shared lib into an app's dynbss
2658 section, and instead use a dynamic relocation to point into the
2659 shared lib. With code that gcc generates, it's vital that this be
2660 enabled; In the PowerPC64 ABI, the address of a function is actually
2661 the address of a function descriptor, which resides in the .opd
2662 section. gcc uses the descriptor directly rather than going via the
2663 GOT as some other ABI's do, which means that initialized function
2664 pointers must reference the descriptor. Thus, a function pointer
2665 initialized to the address of a function in a shared library will
2666 either require a copy reloc, or a dynamic reloc. Using a copy reloc
2667 redefines the function descriptor symbol to point to the copy. This
2668 presents a problem as a plt entry for that function is also
2669 initialized from the function descriptor symbol and the copy reloc
2670 may not be initialized first. */
2671 #define ELIMINATE_COPY_RELOCS 1
2673 /* Section name for stubs is the associated section name plus this
2675 #define STUB_SUFFIX ".stub"
2678 ppc_stub_long_branch:
2679 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2680 destination, but a 24 bit branch in a stub section will reach.
2683 ppc_stub_plt_branch:
2684 Similar to the above, but a 24 bit branch in the stub section won't
2685 reach its destination.
2686 . addis %r12,%r2,xxx@toc@ha
2687 . ld %r11,xxx@toc@l(%r12)
2692 Used to call a function in a shared library. If it so happens that
2693 the plt entry referenced crosses a 64k boundary, then an extra
2694 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
2695 xxx+16 as appropriate.
2696 . addis %r12,%r2,xxx@toc@ha
2698 . ld %r11,xxx+0@toc@l(%r12)
2699 . ld %r2,xxx+8@toc@l(%r12)
2701 . ld %r11,xxx+16@toc@l(%r12)
2704 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
2705 code to adjust the value and save r2 to support multiple toc sections.
2706 A ppc_stub_long_branch with an r2 offset looks like:
2708 . addis %r2,%r2,off@ha
2709 . addi %r2,%r2,off@l
2712 A ppc_stub_plt_branch with an r2 offset looks like:
2714 . addis %r12,%r2,xxx@toc@ha
2715 . ld %r11,xxx@toc@l(%r12)
2716 . addis %r2,%r2,off@ha
2717 . addi %r2,%r2,off@l
2722 enum ppc_stub_type {
2724 ppc_stub_long_branch,
2725 ppc_stub_long_branch_r2off,
2726 ppc_stub_plt_branch,
2727 ppc_stub_plt_branch_r2off,
2731 struct ppc_stub_hash_entry {
2733 /* Base hash table entry structure. */
2734 struct bfd_hash_entry root;
2736 enum ppc_stub_type stub_type;
2738 /* The stub section. */
2741 /* Offset within stub_sec of the beginning of this stub. */
2742 bfd_vma stub_offset;
2744 /* Given the symbol's value and its section we can determine its final
2745 value when building the stubs (so the stub knows where to jump. */
2746 bfd_vma target_value;
2747 asection *target_section;
2749 /* The symbol table entry, if any, that this was derived from. */
2750 struct ppc_link_hash_entry *h;
2752 /* And the reloc addend that this was derived from. */
2755 /* Where this stub is being called from, or, in the case of combined
2756 stub sections, the first input section in the group. */
2760 struct ppc_branch_hash_entry {
2762 /* Base hash table entry structure. */
2763 struct bfd_hash_entry root;
2765 /* Offset within .branch_lt. */
2766 unsigned int offset;
2768 /* Generation marker. */
2772 struct ppc_link_hash_entry
2774 struct elf_link_hash_entry elf;
2776 /* A pointer to the most recently used stub hash entry against this
2778 struct ppc_stub_hash_entry *stub_cache;
2780 /* Track dynamic relocs copied for this symbol. */
2781 struct ppc_dyn_relocs *dyn_relocs;
2783 /* Link between function code and descriptor symbols. */
2784 struct ppc_link_hash_entry *oh;
2786 /* Flag function code and descriptor symbols. */
2787 unsigned int is_func:1;
2788 unsigned int is_func_descriptor:1;
2790 /* Whether global opd sym has been adjusted or not.
2791 After ppc64_elf_edit_opd has run, this flag should be set for all
2792 globals defined in any opd section. */
2793 unsigned int adjust_done:1;
2795 /* Set if we twiddled this symbol to weak at some stage. */
2796 unsigned int was_undefined:1;
2798 /* Contexts in which symbol is used in the GOT (or TOC).
2799 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2800 corresponding relocs are encountered during check_relocs.
2801 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2802 indicate the corresponding GOT entry type is not needed.
2803 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2804 a TPREL one. We use a separate flag rather than setting TPREL
2805 just for convenience in distinguishing the two cases. */
2806 #define TLS_GD 1 /* GD reloc. */
2807 #define TLS_LD 2 /* LD reloc. */
2808 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2809 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2810 #define TLS_TLS 16 /* Any TLS reloc. */
2811 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2812 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2816 /* ppc64 ELF linker hash table. */
2818 struct ppc_link_hash_table
2820 struct elf_link_hash_table elf;
2822 /* The stub hash table. */
2823 struct bfd_hash_table stub_hash_table;
2825 /* Another hash table for plt_branch stubs. */
2826 struct bfd_hash_table branch_hash_table;
2828 /* Linker stub bfd. */
2831 /* Linker call-backs. */
2832 asection * (*add_stub_section) (const char *, asection *);
2833 void (*layout_sections_again) (void);
2835 /* Array to keep track of which stub sections have been created, and
2836 information on stub grouping. */
2838 /* This is the section to which stubs in the group will be attached. */
2840 /* The stub section. */
2842 /* Along with elf_gp, specifies the TOC pointer used in this group. */
2846 /* Temp used when calculating TOC pointers. */
2849 /* Highest input section id. */
2852 /* Highest output section index. */
2855 /* List of input sections for each output section. */
2856 asection **input_list;
2858 /* Short-cuts to get to dynamic linker sections. */
2869 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
2870 struct ppc_link_hash_entry *tls_get_addr;
2871 struct ppc_link_hash_entry *tls_get_addr_fd;
2874 unsigned long stub_count[ppc_stub_plt_call];
2876 /* Set if we should emit symbols for stubs. */
2877 unsigned int emit_stub_syms:1;
2880 unsigned int stub_error:1;
2882 /* Flag set when small branches are detected. Used to
2883 select suitable defaults for the stub group size. */
2884 unsigned int has_14bit_branch:1;
2886 /* Temp used by ppc64_elf_check_directives. */
2887 unsigned int twiddled_syms:1;
2889 /* Incremented every time we size stubs. */
2890 unsigned int stub_iteration;
2892 /* Small local sym to section mapping cache. */
2893 struct sym_sec_cache sym_sec;
2896 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2898 #define ppc_hash_table(p) \
2899 ((struct ppc_link_hash_table *) ((p)->hash))
2901 #define ppc_stub_hash_lookup(table, string, create, copy) \
2902 ((struct ppc_stub_hash_entry *) \
2903 bfd_hash_lookup ((table), (string), (create), (copy)))
2905 #define ppc_branch_hash_lookup(table, string, create, copy) \
2906 ((struct ppc_branch_hash_entry *) \
2907 bfd_hash_lookup ((table), (string), (create), (copy)))
2909 /* Create an entry in the stub hash table. */
2911 static struct bfd_hash_entry *
2912 stub_hash_newfunc (struct bfd_hash_entry *entry,
2913 struct bfd_hash_table *table,
2916 /* Allocate the structure if it has not already been allocated by a
2920 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2925 /* Call the allocation method of the superclass. */
2926 entry = bfd_hash_newfunc (entry, table, string);
2929 struct ppc_stub_hash_entry *eh;
2931 /* Initialize the local fields. */
2932 eh = (struct ppc_stub_hash_entry *) entry;
2933 eh->stub_type = ppc_stub_none;
2934 eh->stub_sec = NULL;
2935 eh->stub_offset = 0;
2936 eh->target_value = 0;
2937 eh->target_section = NULL;
2945 /* Create an entry in the branch hash table. */
2947 static struct bfd_hash_entry *
2948 branch_hash_newfunc (struct bfd_hash_entry *entry,
2949 struct bfd_hash_table *table,
2952 /* Allocate the structure if it has not already been allocated by a
2956 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2961 /* Call the allocation method of the superclass. */
2962 entry = bfd_hash_newfunc (entry, table, string);
2965 struct ppc_branch_hash_entry *eh;
2967 /* Initialize the local fields. */
2968 eh = (struct ppc_branch_hash_entry *) entry;
2976 /* Create an entry in a ppc64 ELF linker hash table. */
2978 static struct bfd_hash_entry *
2979 link_hash_newfunc (struct bfd_hash_entry *entry,
2980 struct bfd_hash_table *table,
2983 /* Allocate the structure if it has not already been allocated by a
2987 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2992 /* Call the allocation method of the superclass. */
2993 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2996 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2998 eh->stub_cache = NULL;
2999 eh->dyn_relocs = NULL;
3002 eh->is_func_descriptor = 0;
3003 eh->adjust_done = 0;
3004 eh->was_undefined = 0;
3011 /* Create a ppc64 ELF linker hash table. */
3013 static struct bfd_link_hash_table *
3014 ppc64_elf_link_hash_table_create (bfd *abfd)
3016 struct ppc_link_hash_table *htab;
3017 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3019 htab = bfd_zmalloc (amt);
3023 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3029 /* Init the stub hash table too. */
3030 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3033 /* And the branch hash table. */
3034 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3037 /* Initializing two fields of the union is just cosmetic. We really
3038 only care about glist, but when compiled on a 32-bit host the
3039 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3040 debugger inspection of these fields look nicer. */
3041 htab->elf.init_refcount.refcount = 0;
3042 htab->elf.init_refcount.glist = NULL;
3043 htab->elf.init_offset.offset = 0;
3044 htab->elf.init_offset.glist = NULL;
3046 return &htab->elf.root;
3049 /* Free the derived linker hash table. */
3052 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3054 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3056 bfd_hash_table_free (&ret->stub_hash_table);
3057 bfd_hash_table_free (&ret->branch_hash_table);
3058 _bfd_generic_link_hash_table_free (hash);
3061 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3064 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3066 struct ppc_link_hash_table *htab;
3068 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3070 /* Always hook our dynamic sections into the first bfd, which is the
3071 linker created stub bfd. This ensures that the GOT header is at
3072 the start of the output TOC section. */
3073 htab = ppc_hash_table (info);
3074 htab->stub_bfd = abfd;
3075 htab->elf.dynobj = abfd;
3078 /* Build a name for an entry in the stub hash table. */
3081 ppc_stub_name (const asection *input_section,
3082 const asection *sym_sec,
3083 const struct ppc_link_hash_entry *h,
3084 const Elf_Internal_Rela *rel)
3089 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3090 offsets from a sym as a branch target? In fact, we could
3091 probably assume the addend is always zero. */
3092 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3096 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3097 stub_name = bfd_malloc (len);
3098 if (stub_name != NULL)
3100 sprintf (stub_name, "%08x.%s+%x",
3101 input_section->id & 0xffffffff,
3102 h->elf.root.root.string,
3103 (int) rel->r_addend & 0xffffffff);
3108 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3109 stub_name = bfd_malloc (len);
3110 if (stub_name != NULL)
3112 sprintf (stub_name, "%08x.%x:%x+%x",
3113 input_section->id & 0xffffffff,
3114 sym_sec->id & 0xffffffff,
3115 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3116 (int) rel->r_addend & 0xffffffff);
3122 /* Look up an entry in the stub hash. Stub entries are cached because
3123 creating the stub name takes a bit of time. */
3125 static struct ppc_stub_hash_entry *
3126 ppc_get_stub_entry (const asection *input_section,
3127 const asection *sym_sec,
3128 struct elf_link_hash_entry *hash,
3129 const Elf_Internal_Rela *rel,
3130 struct ppc_link_hash_table *htab)
3132 struct ppc_stub_hash_entry *stub_entry;
3133 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
3134 const asection *id_sec;
3136 /* If this input section is part of a group of sections sharing one
3137 stub section, then use the id of the first section in the group.
3138 Stub names need to include a section id, as there may well be
3139 more than one stub used to reach say, printf, and we need to
3140 distinguish between them. */
3141 id_sec = htab->stub_group[input_section->id].link_sec;
3143 if (h != NULL && h->stub_cache != NULL
3144 && h->stub_cache->h == h
3145 && h->stub_cache->id_sec == id_sec)
3147 stub_entry = h->stub_cache;
3153 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3154 if (stub_name == NULL)
3157 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3158 stub_name, FALSE, FALSE);
3160 h->stub_cache = stub_entry;
3168 /* Add a new stub entry to the stub hash. Not all fields of the new
3169 stub entry are initialised. */
3171 static struct ppc_stub_hash_entry *
3172 ppc_add_stub (const char *stub_name,
3174 struct ppc_link_hash_table *htab)
3178 struct ppc_stub_hash_entry *stub_entry;
3180 link_sec = htab->stub_group[section->id].link_sec;
3181 stub_sec = htab->stub_group[section->id].stub_sec;
3182 if (stub_sec == NULL)
3184 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3185 if (stub_sec == NULL)
3191 namelen = strlen (link_sec->name);
3192 len = namelen + sizeof (STUB_SUFFIX);
3193 s_name = bfd_alloc (htab->stub_bfd, len);
3197 memcpy (s_name, link_sec->name, namelen);
3198 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3199 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3200 if (stub_sec == NULL)
3202 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3204 htab->stub_group[section->id].stub_sec = stub_sec;
3207 /* Enter this entry into the linker stub hash table. */
3208 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3210 if (stub_entry == NULL)
3212 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3213 section->owner, stub_name);
3217 stub_entry->stub_sec = stub_sec;
3218 stub_entry->stub_offset = 0;
3219 stub_entry->id_sec = link_sec;
3223 /* Create sections for linker generated code. */
3226 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3228 struct ppc_link_hash_table *htab;
3231 htab = ppc_hash_table (info);
3233 /* Create .sfpr for code to save and restore fp regs. */
3234 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3235 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3236 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3237 if (htab->sfpr == NULL
3238 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3239 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3242 /* Create .glink for lazy dynamic linking support. */
3243 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3244 if (htab->glink == NULL
3245 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3246 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3249 /* Create .branch_lt for plt_branch stubs. */
3250 flags = (SEC_ALLOC | SEC_LOAD
3251 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3252 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3253 if (htab->brlt == NULL
3254 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3255 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3260 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3261 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3262 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3264 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3265 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3271 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3272 not already done. */
3275 create_got_section (bfd *abfd, struct bfd_link_info *info)
3277 asection *got, *relgot;
3279 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3283 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3286 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3291 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3292 | SEC_LINKER_CREATED);
3294 got = bfd_make_section (abfd, ".got");
3296 || !bfd_set_section_flags (abfd, got, flags)
3297 || !bfd_set_section_alignment (abfd, got, 3))
3300 relgot = bfd_make_section (abfd, ".rela.got");
3302 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3303 || ! bfd_set_section_alignment (abfd, relgot, 3))
3306 ppc64_elf_tdata (abfd)->got = got;
3307 ppc64_elf_tdata (abfd)->relgot = relgot;
3311 /* Create the dynamic sections, and set up shortcuts. */
3314 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3316 struct ppc_link_hash_table *htab;
3318 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3321 htab = ppc_hash_table (info);
3323 htab->got = bfd_get_section_by_name (dynobj, ".got");
3324 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3325 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3326 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3328 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3330 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3331 || (!info->shared && !htab->relbss))
3337 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3340 ppc64_elf_copy_indirect_symbol
3341 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3342 struct elf_link_hash_entry *dir,
3343 struct elf_link_hash_entry *ind)
3345 struct ppc_link_hash_entry *edir, *eind;
3348 edir = (struct ppc_link_hash_entry *) dir;
3349 eind = (struct ppc_link_hash_entry *) ind;
3351 /* Copy over any dynamic relocs we may have on the indirect sym. */
3352 if (eind->dyn_relocs != NULL)
3354 if (edir->dyn_relocs != NULL)
3356 struct ppc_dyn_relocs **pp;
3357 struct ppc_dyn_relocs *p;
3359 if (eind->elf.root.type == bfd_link_hash_indirect)
3362 /* Add reloc counts against the weak sym to the strong sym
3363 list. Merge any entries against the same section. */
3364 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3366 struct ppc_dyn_relocs *q;
3368 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3369 if (q->sec == p->sec)
3371 q->pc_count += p->pc_count;
3372 q->count += p->count;
3379 *pp = edir->dyn_relocs;
3382 edir->dyn_relocs = eind->dyn_relocs;
3383 eind->dyn_relocs = NULL;
3386 edir->is_func |= eind->is_func;
3387 edir->is_func_descriptor |= eind->is_func_descriptor;
3388 edir->tls_mask |= eind->tls_mask;
3390 mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR
3391 | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF
3392 | ELF_LINK_HASH_NEEDS_PLT);
3393 /* If called to transfer flags for a weakdef during processing
3394 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3395 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3396 if (ELIMINATE_COPY_RELOCS
3397 && eind->elf.root.type != bfd_link_hash_indirect
3398 && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
3399 mask &= ~ELF_LINK_NON_GOT_REF;
3401 edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask;
3403 /* If we were called to copy over info for a weak sym, that's all. */
3404 if (eind->elf.root.type != bfd_link_hash_indirect)
3407 /* Copy over got entries that we may have already seen to the
3408 symbol which just became indirect. */
3409 if (eind->elf.got.glist != NULL)
3411 if (edir->elf.got.glist != NULL)
3413 struct got_entry **entp;
3414 struct got_entry *ent;
3416 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3418 struct got_entry *dent;
3420 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3421 if (dent->addend == ent->addend
3422 && dent->owner == ent->owner
3423 && dent->tls_type == ent->tls_type)
3425 dent->got.refcount += ent->got.refcount;
3432 *entp = edir->elf.got.glist;
3435 edir->elf.got.glist = eind->elf.got.glist;
3436 eind->elf.got.glist = NULL;
3439 /* And plt entries. */
3440 if (eind->elf.plt.plist != NULL)
3442 if (edir->elf.plt.plist != NULL)
3444 struct plt_entry **entp;
3445 struct plt_entry *ent;
3447 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3449 struct plt_entry *dent;
3451 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3452 if (dent->addend == ent->addend)
3454 dent->plt.refcount += ent->plt.refcount;
3461 *entp = edir->elf.plt.plist;
3464 edir->elf.plt.plist = eind->elf.plt.plist;
3465 eind->elf.plt.plist = NULL;
3468 if (edir->elf.dynindx == -1)
3470 edir->elf.dynindx = eind->elf.dynindx;
3471 edir->elf.dynstr_index = eind->elf.dynstr_index;
3472 eind->elf.dynindx = -1;
3473 eind->elf.dynstr_index = 0;
3476 BFD_ASSERT (eind->elf.dynindx == -1);
3479 /* Find the function descriptor hash entry from the given function code
3480 hash entry FH. Link the entries via their OH fields. */
3482 static struct ppc_link_hash_entry *
3483 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3485 struct ppc_link_hash_entry *fdh = fh->oh;
3489 const char *fd_name = fh->elf.root.root.string + 1;
3491 fdh = (struct ppc_link_hash_entry *)
3492 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3495 fdh->is_func_descriptor = 1;
3505 /* Hacks to support old ABI code.
3506 When making function calls, old ABI code references function entry
3507 points (dot symbols), while new ABI code references the function
3508 descriptor symbol. We need to make any combination of reference and
3509 definition work together, without breaking archive linking.
3511 For a defined function "foo" and an undefined call to "bar":
3512 An old object defines "foo" and ".foo", references ".bar" (possibly
3514 A new object defines "foo" and references "bar".
3516 A new object thus has no problem with its undefined symbols being
3517 satisfied by definitions in an old object. On the other hand, the
3518 old object won't have ".bar" satisfied by a new object. */
3520 /* Fix function descriptor symbols defined in .opd sections to be
3524 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
3525 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3526 Elf_Internal_Sym *isym,
3527 const char **name ATTRIBUTE_UNUSED,
3528 flagword *flags ATTRIBUTE_UNUSED,
3530 bfd_vma *value ATTRIBUTE_UNUSED)
3533 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
3534 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
3538 /* This function makes an old ABI object reference to ".bar" cause the
3539 inclusion of a new ABI object archive that defines "bar". */
3541 static struct elf_link_hash_entry *
3542 ppc64_elf_archive_symbol_lookup (bfd *abfd,
3543 struct bfd_link_info *info,
3546 struct elf_link_hash_entry *h;
3550 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
3557 len = strlen (name);
3558 dot_name = bfd_alloc (abfd, len + 2);
3559 if (dot_name == NULL)
3560 return (struct elf_link_hash_entry *) 0 - 1;
3562 memcpy (dot_name + 1, name, len + 1);
3563 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
3564 bfd_release (abfd, dot_name);
3568 /* This function satisfies all old ABI object references to ".bar" if a
3569 new ABI object defines "bar". Well, at least, undefined dot symbols
3570 are made weak. This stops later archive searches from including an
3571 object if we already have a function descriptor definition. It also
3572 prevents the linker complaining about undefined symbols. */
3575 add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
3577 struct bfd_link_info *info;
3578 struct ppc_link_hash_table *htab;
3579 struct ppc_link_hash_entry *eh;
3580 struct ppc_link_hash_entry *fdh;
3582 if (h->root.type == bfd_link_hash_indirect)
3585 if (h->root.type == bfd_link_hash_warning)
3586 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3588 if (h->root.type != bfd_link_hash_undefined
3589 || h->root.root.string[0] != '.')
3593 htab = ppc_hash_table (info);
3594 eh = (struct ppc_link_hash_entry *) h;
3595 fdh = get_fdh (eh, htab);
3598 eh->elf.root.type = bfd_link_hash_undefweak;
3599 eh->was_undefined = 1;
3600 htab->twiddled_syms = 1;
3607 ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
3608 struct bfd_link_info *info)
3610 struct ppc_link_hash_table *htab;
3612 htab = ppc_hash_table (info);
3613 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, info);
3615 /* We need to fix the undefs list for any syms we have twiddled to
3617 if (htab->twiddled_syms)
3619 struct bfd_link_hash_entry **pun;
3621 pun = &htab->elf.root.undefs;
3622 while (*pun != NULL)
3624 struct bfd_link_hash_entry *h = *pun;
3626 if (h->type != bfd_link_hash_undefined
3627 && h->type != bfd_link_hash_common)
3631 if (h == htab->elf.root.undefs_tail)
3633 if (pun == &htab->elf.root.undefs)
3634 htab->elf.root.undefs_tail = NULL;
3636 /* pun points at an und_next field. Go back to
3637 the start of the link_hash_entry. */
3638 htab->elf.root.undefs_tail = (struct bfd_link_hash_entry *)
3639 ((char *) pun - ((char *) &h->und_next - (char *) h));
3647 htab->twiddled_syms = 0;
3653 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
3654 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
3656 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
3657 char *local_got_tls_masks;
3659 if (local_got_ents == NULL)
3661 bfd_size_type size = symtab_hdr->sh_info;
3663 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
3664 local_got_ents = bfd_zalloc (abfd, size);
3665 if (local_got_ents == NULL)
3667 elf_local_got_ents (abfd) = local_got_ents;
3670 if ((tls_type & TLS_EXPLICIT) == 0)
3672 struct got_entry *ent;
3674 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
3675 if (ent->addend == r_addend
3676 && ent->owner == abfd
3677 && ent->tls_type == tls_type)
3681 bfd_size_type amt = sizeof (*ent);
3682 ent = bfd_alloc (abfd, amt);
3685 ent->next = local_got_ents[r_symndx];
3686 ent->addend = r_addend;
3688 ent->tls_type = tls_type;
3689 ent->got.refcount = 0;
3690 local_got_ents[r_symndx] = ent;
3692 ent->got.refcount += 1;
3695 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
3696 local_got_tls_masks[r_symndx] |= tls_type;
3701 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
3703 struct plt_entry *ent;
3705 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
3706 if (ent->addend == addend)
3710 bfd_size_type amt = sizeof (*ent);
3711 ent = bfd_alloc (abfd, amt);
3714 ent->next = eh->elf.plt.plist;
3715 ent->addend = addend;
3716 ent->plt.refcount = 0;
3717 eh->elf.plt.plist = ent;
3719 ent->plt.refcount += 1;
3720 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3725 /* Look through the relocs for a section during the first phase, and
3726 calculate needed space in the global offset table, procedure
3727 linkage table, and dynamic reloc sections. */
3730 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
3731 asection *sec, const Elf_Internal_Rela *relocs)
3733 struct ppc_link_hash_table *htab;
3734 Elf_Internal_Shdr *symtab_hdr;
3735 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3736 const Elf_Internal_Rela *rel;
3737 const Elf_Internal_Rela *rel_end;
3739 asection **opd_sym_map;
3741 if (info->relocatable)
3744 /* Don't do anything special with non-loaded, non-alloced sections.
3745 In particular, any relocs in such sections should not affect GOT
3746 and PLT reference counting (ie. we don't allow them to create GOT
3747 or PLT entries), there's no possibility or desire to optimize TLS
3748 relocs, and there's not much point in propagating relocs to shared
3749 libs that the dynamic linker won't relocate. */
3750 if ((sec->flags & SEC_ALLOC) == 0)
3753 htab = ppc_hash_table (info);
3754 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3756 sym_hashes = elf_sym_hashes (abfd);
3757 sym_hashes_end = (sym_hashes
3758 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
3759 - symtab_hdr->sh_info);
3763 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
3765 /* Garbage collection needs some extra help with .opd sections.
3766 We don't want to necessarily keep everything referenced by
3767 relocs in .opd, as that would keep all functions. Instead,
3768 if we reference an .opd symbol (a function descriptor), we
3769 want to keep the function code symbol's section. This is
3770 easy for global symbols, but for local syms we need to keep
3771 information about the associated function section. Later, if
3772 edit_opd deletes entries, we'll use this array to adjust
3773 local syms in .opd. */
3775 asection *func_section;
3780 amt = sec->size * sizeof (union opd_info) / 24;
3781 opd_sym_map = bfd_zalloc (abfd, amt);
3782 if (opd_sym_map == NULL)
3784 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
3787 if (htab->sfpr == NULL
3788 && !create_linkage_sections (htab->elf.dynobj, info))
3791 rel_end = relocs + sec->reloc_count;
3792 for (rel = relocs; rel < rel_end; rel++)
3794 unsigned long r_symndx;
3795 struct elf_link_hash_entry *h;
3796 enum elf_ppc64_reloc_type r_type;
3799 r_symndx = ELF64_R_SYM (rel->r_info);
3800 if (r_symndx < symtab_hdr->sh_info)
3803 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3805 r_type = ELF64_R_TYPE (rel->r_info);
3808 case R_PPC64_GOT_TLSLD16:
3809 case R_PPC64_GOT_TLSLD16_LO:
3810 case R_PPC64_GOT_TLSLD16_HI:
3811 case R_PPC64_GOT_TLSLD16_HA:
3812 ppc64_tlsld_got (abfd)->refcount += 1;
3813 tls_type = TLS_TLS | TLS_LD;
3816 case R_PPC64_GOT_TLSGD16:
3817 case R_PPC64_GOT_TLSGD16_LO:
3818 case R_PPC64_GOT_TLSGD16_HI:
3819 case R_PPC64_GOT_TLSGD16_HA:
3820 tls_type = TLS_TLS | TLS_GD;
3823 case R_PPC64_GOT_TPREL16_DS:
3824 case R_PPC64_GOT_TPREL16_LO_DS:
3825 case R_PPC64_GOT_TPREL16_HI:
3826 case R_PPC64_GOT_TPREL16_HA:
3828 info->flags |= DF_STATIC_TLS;
3829 tls_type = TLS_TLS | TLS_TPREL;
3832 case R_PPC64_GOT_DTPREL16_DS:
3833 case R_PPC64_GOT_DTPREL16_LO_DS:
3834 case R_PPC64_GOT_DTPREL16_HI:
3835 case R_PPC64_GOT_DTPREL16_HA:
3836 tls_type = TLS_TLS | TLS_DTPREL;
3838 sec->has_tls_reloc = 1;
3842 case R_PPC64_GOT16_DS:
3843 case R_PPC64_GOT16_HA:
3844 case R_PPC64_GOT16_HI:
3845 case R_PPC64_GOT16_LO:
3846 case R_PPC64_GOT16_LO_DS:
3847 /* This symbol requires a global offset table entry. */
3848 sec->has_gp_reloc = 1;
3849 if (ppc64_elf_tdata (abfd)->got == NULL
3850 && !create_got_section (abfd, info))
3855 struct ppc_link_hash_entry *eh;
3856 struct got_entry *ent;
3858 eh = (struct ppc_link_hash_entry *) h;
3859 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
3860 if (ent->addend == rel->r_addend
3861 && ent->owner == abfd
3862 && ent->tls_type == tls_type)
3866 bfd_size_type amt = sizeof (*ent);
3867 ent = bfd_alloc (abfd, amt);
3870 ent->next = eh->elf.got.glist;
3871 ent->addend = rel->r_addend;
3873 ent->tls_type = tls_type;
3874 ent->got.refcount = 0;
3875 eh->elf.got.glist = ent;
3877 ent->got.refcount += 1;
3878 eh->tls_mask |= tls_type;
3881 /* This is a global offset table entry for a local symbol. */
3882 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3883 rel->r_addend, tls_type))
3887 case R_PPC64_PLT16_HA:
3888 case R_PPC64_PLT16_HI:
3889 case R_PPC64_PLT16_LO:
3892 /* This symbol requires a procedure linkage table entry. We
3893 actually build the entry in adjust_dynamic_symbol,
3894 because this might be a case of linking PIC code without
3895 linking in any dynamic objects, in which case we don't
3896 need to generate a procedure linkage table after all. */
3899 /* It does not make sense to have a procedure linkage
3900 table entry for a local symbol. */
3901 bfd_set_error (bfd_error_bad_value);
3905 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3910 /* The following relocations don't need to propagate the
3911 relocation if linking a shared object since they are
3912 section relative. */
3913 case R_PPC64_SECTOFF:
3914 case R_PPC64_SECTOFF_LO:
3915 case R_PPC64_SECTOFF_HI:
3916 case R_PPC64_SECTOFF_HA:
3917 case R_PPC64_SECTOFF_DS:
3918 case R_PPC64_SECTOFF_LO_DS:
3919 case R_PPC64_DTPREL16:
3920 case R_PPC64_DTPREL16_LO:
3921 case R_PPC64_DTPREL16_HI:
3922 case R_PPC64_DTPREL16_HA:
3923 case R_PPC64_DTPREL16_DS:
3924 case R_PPC64_DTPREL16_LO_DS:
3925 case R_PPC64_DTPREL16_HIGHER:
3926 case R_PPC64_DTPREL16_HIGHERA:
3927 case R_PPC64_DTPREL16_HIGHEST:
3928 case R_PPC64_DTPREL16_HIGHESTA:
3933 case R_PPC64_TOC16_LO:
3934 case R_PPC64_TOC16_HI:
3935 case R_PPC64_TOC16_HA:
3936 case R_PPC64_TOC16_DS:
3937 case R_PPC64_TOC16_LO_DS:
3938 sec->has_gp_reloc = 1;
3941 /* This relocation describes the C++ object vtable hierarchy.
3942 Reconstruct it for later use during GC. */
3943 case R_PPC64_GNU_VTINHERIT:
3944 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3948 /* This relocation describes which C++ vtable entries are actually
3949 used. Record for later use during GC. */
3950 case R_PPC64_GNU_VTENTRY:
3951 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3956 case R_PPC64_REL14_BRTAKEN:
3957 case R_PPC64_REL14_BRNTAKEN:
3958 htab->has_14bit_branch = 1;
3964 /* We may need a .plt entry if the function this reloc
3965 refers to is in a shared lib. */
3966 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3969 if (h == &htab->tls_get_addr->elf
3970 || h == &htab->tls_get_addr_fd->elf)
3971 sec->has_tls_reloc = 1;
3972 else if (htab->tls_get_addr == NULL
3973 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
3974 && (h->root.root.string[15] == 0
3975 || h->root.root.string[15] == '@'))
3977 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
3978 sec->has_tls_reloc = 1;
3980 else if (htab->tls_get_addr_fd == NULL
3981 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
3982 && (h->root.root.string[14] == 0
3983 || h->root.root.string[14] == '@'))
3985 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
3986 sec->has_tls_reloc = 1;
3991 case R_PPC64_TPREL64:
3992 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
3994 info->flags |= DF_STATIC_TLS;
3997 case R_PPC64_DTPMOD64:
3998 if (rel + 1 < rel_end
3999 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4000 && rel[1].r_offset == rel->r_offset + 8)
4001 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4003 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4006 case R_PPC64_DTPREL64:
4007 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4009 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4010 && rel[-1].r_offset == rel->r_offset - 8)
4011 /* This is the second reloc of a dtpmod, dtprel pair.
4012 Don't mark with TLS_DTPREL. */
4016 sec->has_tls_reloc = 1;
4019 struct ppc_link_hash_entry *eh;
4020 eh = (struct ppc_link_hash_entry *) h;
4021 eh->tls_mask |= tls_type;
4024 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4025 rel->r_addend, tls_type))
4028 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4030 /* One extra to simplify get_tls_mask. */
4031 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4032 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4033 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4036 BFD_ASSERT (rel->r_offset % 8 == 0);
4037 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4039 /* Mark the second slot of a GD or LD entry.
4040 -1 to indicate GD and -2 to indicate LD. */
4041 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4042 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4043 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4044 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4047 case R_PPC64_TPREL16:
4048 case R_PPC64_TPREL16_LO:
4049 case R_PPC64_TPREL16_HI:
4050 case R_PPC64_TPREL16_HA:
4051 case R_PPC64_TPREL16_DS:
4052 case R_PPC64_TPREL16_LO_DS:
4053 case R_PPC64_TPREL16_HIGHER:
4054 case R_PPC64_TPREL16_HIGHERA:
4055 case R_PPC64_TPREL16_HIGHEST:
4056 case R_PPC64_TPREL16_HIGHESTA:
4059 info->flags |= DF_STATIC_TLS;
4064 case R_PPC64_ADDR64:
4065 if (opd_sym_map != NULL
4066 && rel + 1 < rel_end
4067 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4071 if (h->root.root.string[0] == '.'
4072 && h->root.root.string[1] != 0
4073 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4076 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4082 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4087 opd_sym_map[rel->r_offset / 24] = s;
4095 case R_PPC64_ADDR14:
4096 case R_PPC64_ADDR14_BRNTAKEN:
4097 case R_PPC64_ADDR14_BRTAKEN:
4098 case R_PPC64_ADDR16:
4099 case R_PPC64_ADDR16_DS:
4100 case R_PPC64_ADDR16_HA:
4101 case R_PPC64_ADDR16_HI:
4102 case R_PPC64_ADDR16_HIGHER:
4103 case R_PPC64_ADDR16_HIGHERA:
4104 case R_PPC64_ADDR16_HIGHEST:
4105 case R_PPC64_ADDR16_HIGHESTA:
4106 case R_PPC64_ADDR16_LO:
4107 case R_PPC64_ADDR16_LO_DS:
4108 case R_PPC64_ADDR24:
4109 case R_PPC64_ADDR32:
4110 case R_PPC64_UADDR16:
4111 case R_PPC64_UADDR32:
4112 case R_PPC64_UADDR64:
4114 if (h != NULL && !info->shared)
4115 /* We may need a copy reloc. */
4116 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
4118 /* Don't propagate .opd relocs. */
4119 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4122 /* If we are creating a shared library, and this is a reloc
4123 against a global symbol, or a non PC relative reloc
4124 against a local symbol, then we need to copy the reloc
4125 into the shared library. However, if we are linking with
4126 -Bsymbolic, we do not need to copy a reloc against a
4127 global symbol which is defined in an object we are
4128 including in the link (i.e., DEF_REGULAR is set). At
4129 this point we have not seen all the input files, so it is
4130 possible that DEF_REGULAR is not set now but will be set
4131 later (it is never cleared). In case of a weak definition,
4132 DEF_REGULAR may be cleared later by a strong definition in
4133 a shared library. We account for that possibility below by
4134 storing information in the dyn_relocs field of the hash
4135 table entry. A similar situation occurs when creating
4136 shared libraries and symbol visibility changes render the
4139 If on the other hand, we are creating an executable, we
4140 may need to keep relocations for symbols satisfied by a
4141 dynamic library if we manage to avoid copy relocs for the
4145 && (MUST_BE_DYN_RELOC (r_type)
4147 && (! info->symbolic
4148 || h->root.type == bfd_link_hash_defweak
4149 || (h->elf_link_hash_flags
4150 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
4151 || (ELIMINATE_COPY_RELOCS
4154 && (h->root.type == bfd_link_hash_defweak
4155 || (h->elf_link_hash_flags
4156 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
4158 struct ppc_dyn_relocs *p;
4159 struct ppc_dyn_relocs **head;
4161 /* We must copy these reloc types into the output file.
4162 Create a reloc section in dynobj and make room for
4169 name = (bfd_elf_string_from_elf_section
4171 elf_elfheader (abfd)->e_shstrndx,
4172 elf_section_data (sec)->rel_hdr.sh_name));
4176 if (strncmp (name, ".rela", 5) != 0
4177 || strcmp (bfd_get_section_name (abfd, sec),
4180 (*_bfd_error_handler)
4181 (_("%B: bad relocation section name `%s\'"),
4183 bfd_set_error (bfd_error_bad_value);
4186 dynobj = htab->elf.dynobj;
4187 sreloc = bfd_get_section_by_name (dynobj, name);
4192 sreloc = bfd_make_section (dynobj, name);
4193 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4194 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4195 if ((sec->flags & SEC_ALLOC) != 0)
4196 flags |= SEC_ALLOC | SEC_LOAD;
4198 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4199 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4202 elf_section_data (sec)->sreloc = sreloc;
4205 /* If this is a global symbol, we count the number of
4206 relocations we need for this symbol. */
4209 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4213 /* Track dynamic relocs needed for local syms too.
4214 We really need local syms available to do this
4218 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4223 head = ((struct ppc_dyn_relocs **)
4224 &elf_section_data (s)->local_dynrel);
4228 if (p == NULL || p->sec != sec)
4230 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4241 if (!MUST_BE_DYN_RELOC (r_type))
4254 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4255 of the code entry point, and its section. */
4258 opd_entry_value (asection *opd_sec,
4260 asection **code_sec,
4263 bfd *opd_bfd = opd_sec->owner;
4264 Elf_Internal_Rela *lo, *hi, *look;
4266 /* Go find the opd reloc at the sym address. */
4267 lo = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4268 BFD_ASSERT (lo != NULL);
4269 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4273 look = lo + (hi - lo) / 2;
4274 if (look->r_offset < offset)
4276 else if (look->r_offset > offset)
4280 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4281 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4282 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4284 unsigned long symndx = ELF64_R_SYM (look->r_info);
4288 if (symndx < symtab_hdr->sh_info)
4290 Elf_Internal_Sym *sym;
4292 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4295 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4296 symtab_hdr->sh_info,
4297 0, NULL, NULL, NULL);
4299 return (bfd_vma) -1;
4300 symtab_hdr->contents = (bfd_byte *) sym;
4304 val = sym->st_value;
4306 if ((sym->st_shndx != SHN_UNDEF
4307 && sym->st_shndx < SHN_LORESERVE)
4308 || sym->st_shndx > SHN_HIRESERVE)
4309 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4310 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4314 struct elf_link_hash_entry **sym_hashes;
4315 struct elf_link_hash_entry *rh;
4317 sym_hashes = elf_sym_hashes (opd_bfd);
4318 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4319 while (rh->root.type == bfd_link_hash_indirect
4320 || rh->root.type == bfd_link_hash_warning)
4321 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4322 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4323 || rh->root.type == bfd_link_hash_defweak);
4324 val = rh->root.u.def.value;
4325 sec = rh->root.u.def.section;
4327 val += look->r_addend;
4328 if (code_off != NULL)
4330 if (code_sec != NULL)
4332 if (sec != NULL && sec->output_section != NULL)
4333 val += sec->output_section->vma + sec->output_offset;
4339 return (bfd_vma) -1;
4342 /* Return the section that should be marked against GC for a given
4346 ppc64_elf_gc_mark_hook (asection *sec,
4347 struct bfd_link_info *info,
4348 Elf_Internal_Rela *rel,
4349 struct elf_link_hash_entry *h,
4350 Elf_Internal_Sym *sym)
4354 /* First mark all our entry sym sections. */
4355 if (info->gc_sym_list != NULL)
4357 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4358 struct bfd_sym_chain *sym = info->gc_sym_list;
4360 info->gc_sym_list = NULL;
4363 struct ppc_link_hash_entry *eh;
4365 eh = (struct ppc_link_hash_entry *)
4366 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4369 if (eh->elf.root.type != bfd_link_hash_defined
4370 && eh->elf.root.type != bfd_link_hash_defweak)
4373 if (eh->is_func_descriptor)
4374 rsec = eh->oh->elf.root.u.def.section;
4375 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4376 && opd_entry_value (eh->elf.root.u.def.section,
4377 eh->elf.root.u.def.value,
4378 &rsec, NULL) != (bfd_vma) -1)
4384 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4386 rsec = eh->elf.root.u.def.section;
4388 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4392 while (sym != NULL);
4395 /* Syms return NULL if we're marking .opd, so we avoid marking all
4396 function sections, as all functions are referenced in .opd. */
4398 if (get_opd_info (sec) != NULL)
4403 enum elf_ppc64_reloc_type r_type;
4404 struct ppc_link_hash_entry *eh;
4406 r_type = ELF64_R_TYPE (rel->r_info);
4409 case R_PPC64_GNU_VTINHERIT:
4410 case R_PPC64_GNU_VTENTRY:
4414 switch (h->root.type)
4416 case bfd_link_hash_defined:
4417 case bfd_link_hash_defweak:
4418 eh = (struct ppc_link_hash_entry *) h;
4419 if (eh->oh != NULL && eh->oh->is_func_descriptor)
4422 /* Function descriptor syms cause the associated
4423 function code sym section to be marked. */
4424 if (eh->is_func_descriptor)
4426 /* They also mark their opd section. */
4427 if (!eh->elf.root.u.def.section->gc_mark)
4428 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4429 ppc64_elf_gc_mark_hook);
4431 rsec = eh->oh->elf.root.u.def.section;
4433 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4434 && opd_entry_value (eh->elf.root.u.def.section,
4435 eh->elf.root.u.def.value,
4436 &rsec, NULL) != (bfd_vma) -1)
4438 if (!eh->elf.root.u.def.section->gc_mark)
4439 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4440 ppc64_elf_gc_mark_hook);
4443 rsec = h->root.u.def.section;
4446 case bfd_link_hash_common:
4447 rsec = h->root.u.c.p->section;
4457 asection **opd_sym_section;
4459 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4460 opd_sym_section = get_opd_info (rsec);
4461 if (opd_sym_section != NULL)
4464 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4466 rsec = opd_sym_section[sym->st_value / 24];
4473 /* Update the .got, .plt. and dynamic reloc reference counts for the
4474 section being removed. */
4477 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4478 asection *sec, const Elf_Internal_Rela *relocs)
4480 struct ppc_link_hash_table *htab;
4481 Elf_Internal_Shdr *symtab_hdr;
4482 struct elf_link_hash_entry **sym_hashes;
4483 struct got_entry **local_got_ents;
4484 const Elf_Internal_Rela *rel, *relend;
4486 if ((sec->flags & SEC_ALLOC) == 0)
4489 elf_section_data (sec)->local_dynrel = NULL;
4491 htab = ppc_hash_table (info);
4492 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4493 sym_hashes = elf_sym_hashes (abfd);
4494 local_got_ents = elf_local_got_ents (abfd);
4496 relend = relocs + sec->reloc_count;
4497 for (rel = relocs; rel < relend; rel++)
4499 unsigned long r_symndx;
4500 enum elf_ppc64_reloc_type r_type;
4501 struct elf_link_hash_entry *h = NULL;
4504 r_symndx = ELF64_R_SYM (rel->r_info);
4505 r_type = ELF64_R_TYPE (rel->r_info);
4506 if (r_symndx >= symtab_hdr->sh_info)
4508 struct ppc_link_hash_entry *eh;
4509 struct ppc_dyn_relocs **pp;
4510 struct ppc_dyn_relocs *p;
4512 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4513 eh = (struct ppc_link_hash_entry *) h;
4515 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4518 /* Everything must go for SEC. */
4526 case R_PPC64_GOT_TLSLD16:
4527 case R_PPC64_GOT_TLSLD16_LO:
4528 case R_PPC64_GOT_TLSLD16_HI:
4529 case R_PPC64_GOT_TLSLD16_HA:
4530 ppc64_tlsld_got (abfd)->refcount -= 1;
4531 tls_type = TLS_TLS | TLS_LD;
4534 case R_PPC64_GOT_TLSGD16:
4535 case R_PPC64_GOT_TLSGD16_LO:
4536 case R_PPC64_GOT_TLSGD16_HI:
4537 case R_PPC64_GOT_TLSGD16_HA:
4538 tls_type = TLS_TLS | TLS_GD;
4541 case R_PPC64_GOT_TPREL16_DS:
4542 case R_PPC64_GOT_TPREL16_LO_DS:
4543 case R_PPC64_GOT_TPREL16_HI:
4544 case R_PPC64_GOT_TPREL16_HA:
4545 tls_type = TLS_TLS | TLS_TPREL;
4548 case R_PPC64_GOT_DTPREL16_DS:
4549 case R_PPC64_GOT_DTPREL16_LO_DS:
4550 case R_PPC64_GOT_DTPREL16_HI:
4551 case R_PPC64_GOT_DTPREL16_HA:
4552 tls_type = TLS_TLS | TLS_DTPREL;
4556 case R_PPC64_GOT16_DS:
4557 case R_PPC64_GOT16_HA:
4558 case R_PPC64_GOT16_HI:
4559 case R_PPC64_GOT16_LO:
4560 case R_PPC64_GOT16_LO_DS:
4563 struct got_entry *ent;
4568 ent = local_got_ents[r_symndx];
4570 for (; ent != NULL; ent = ent->next)
4571 if (ent->addend == rel->r_addend
4572 && ent->owner == abfd
4573 && ent->tls_type == tls_type)
4577 if (ent->got.refcount > 0)
4578 ent->got.refcount -= 1;
4582 case R_PPC64_PLT16_HA:
4583 case R_PPC64_PLT16_HI:
4584 case R_PPC64_PLT16_LO:
4588 case R_PPC64_REL14_BRNTAKEN:
4589 case R_PPC64_REL14_BRTAKEN:
4593 struct plt_entry *ent;
4595 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4596 if (ent->addend == rel->r_addend)
4600 if (ent->plt.refcount > 0)
4601 ent->plt.refcount -= 1;
4612 /* Called via elf_link_hash_traverse to transfer dynamic linking
4613 information on function code symbol entries to their corresponding
4614 function descriptor symbol entries. */
4616 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
4618 struct bfd_link_info *info;
4619 struct ppc_link_hash_table *htab;
4620 struct plt_entry *ent;
4621 struct ppc_link_hash_entry *fh;
4622 struct ppc_link_hash_entry *fdh;
4623 bfd_boolean force_local;
4625 fh = (struct ppc_link_hash_entry *) h;
4626 if (fh->elf.root.type == bfd_link_hash_indirect)
4629 if (fh->elf.root.type == bfd_link_hash_warning)
4630 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
4633 htab = ppc_hash_table (info);
4635 /* If this is a function code symbol, transfer dynamic linking
4636 information to the function descriptor symbol. */
4640 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
4641 if (ent->plt.refcount > 0)
4644 || fh->elf.root.root.string[0] != '.'
4645 || fh->elf.root.root.string[1] == '\0')
4648 /* Find the corresponding function descriptor symbol. Create it
4649 as undefined if necessary. */
4651 fdh = get_fdh (fh, htab);
4653 while (fdh->elf.root.type == bfd_link_hash_indirect
4654 || fdh->elf.root.type == bfd_link_hash_warning)
4655 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
4659 && (fh->elf.root.type == bfd_link_hash_undefined
4660 || fh->elf.root.type == bfd_link_hash_undefweak))
4664 struct bfd_link_hash_entry *bh;
4666 abfd = fh->elf.root.u.undef.abfd;
4667 newsym = bfd_make_empty_symbol (abfd);
4668 newsym->name = fh->elf.root.root.string + 1;
4669 newsym->section = bfd_und_section_ptr;
4671 newsym->flags = BSF_OBJECT;
4672 if (fh->elf.root.type == bfd_link_hash_undefweak)
4673 newsym->flags |= BSF_WEAK;
4675 bh = &fdh->elf.root;
4676 if ( !(_bfd_generic_link_add_one_symbol
4677 (info, abfd, newsym->name, newsym->flags,
4678 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
4682 fdh = (struct ppc_link_hash_entry *) bh;
4683 fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4685 fdh->elf.type = STT_OBJECT;
4689 && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
4691 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4692 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
4693 || (fdh->elf.root.type == bfd_link_hash_undefweak
4694 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
4696 if (fdh->elf.dynindx == -1)
4697 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
4699 fdh->elf.elf_link_hash_flags
4700 |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
4701 | ELF_LINK_HASH_REF_DYNAMIC
4702 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4703 | ELF_LINK_NON_GOT_REF));
4704 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
4706 struct plt_entry **ep = &fdh->elf.plt.plist;
4709 *ep = fh->elf.plt.plist;
4710 fh->elf.plt.plist = NULL;
4711 fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4713 fdh->is_func_descriptor = 1;
4718 /* Now that the info is on the function descriptor, clear the
4719 function code sym info. Any function code syms for which we
4720 don't have a definition in a regular file, we force local.
4721 This prevents a shared library from exporting syms that have
4722 been imported from another library. Function code syms that
4723 are really in the library we must leave global to prevent the
4724 linker dragging in a definition from a static library. */
4727 && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4729 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4730 || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0));
4731 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
4736 #define MIN_SAVE_FPR 14
4737 #define MAX_SAVE_FPR 31
4739 /* Called near the start of bfd_elf_size_dynamic_sections. We use
4740 this hook to a) provide some gcc support functions, and b) transfer
4741 dynamic linking information gathered so far on function code symbol
4742 entries, to their corresponding function descriptor symbol entries. */
4744 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
4745 struct bfd_link_info *info)
4747 struct ppc_link_hash_table *htab;
4748 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
4749 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
4751 struct elf_link_hash_entry *h;
4755 htab = ppc_hash_table (info);
4757 if (htab->sfpr == NULL)
4758 /* We don't have any relocs. */
4761 /* First provide any missing ._savef* and ._restf* functions. */
4762 memcpy (sym, "._savef14", 10);
4763 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4765 sym[7] = i / 10 + '0';
4766 sym[8] = i % 10 + '0';
4767 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4769 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4771 if (lowest_savef > i)
4773 h->root.type = bfd_link_hash_defined;
4774 h->root.u.def.section = htab->sfpr;
4775 h->root.u.def.value = (i - lowest_savef) * 4;
4777 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4778 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
4782 memcpy (sym, "._restf14", 10);
4783 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4785 sym[7] = i / 10 + '0';
4786 sym[8] = i % 10 + '0';
4787 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4789 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4791 if (lowest_restf > i)
4793 h->root.type = bfd_link_hash_defined;
4794 h->root.u.def.section = htab->sfpr;
4795 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4796 + (i - lowest_restf) * 4);
4798 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4799 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
4803 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
4805 htab->sfpr->size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4806 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
4808 if (htab->sfpr->size == 0)
4810 _bfd_strip_section_from_output (info, htab->sfpr);
4814 p = bfd_alloc (htab->elf.dynobj, htab->sfpr->size);
4817 htab->sfpr->contents = p;
4819 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
4821 unsigned int fpr = i << 21;
4822 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4823 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
4826 if (lowest_savef <= MAX_SAVE_FPR)
4828 bfd_put_32 (htab->elf.dynobj, BLR, p);
4832 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
4834 unsigned int fpr = i << 21;
4835 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4836 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
4839 if (lowest_restf <= MAX_SAVE_FPR)
4840 bfd_put_32 (htab->elf.dynobj, BLR, p);
4845 /* Adjust a symbol defined by a dynamic object and referenced by a
4846 regular object. The current definition is in some section of the
4847 dynamic object, but we're not including those sections. We have to
4848 change the definition to something the rest of the link can
4852 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4853 struct elf_link_hash_entry *h)
4855 struct ppc_link_hash_table *htab;
4857 unsigned int power_of_two;
4859 htab = ppc_hash_table (info);
4861 /* Deal with function syms. */
4862 if (h->type == STT_FUNC
4863 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4865 /* Clear procedure linkage table information for any symbol that
4866 won't need a .plt entry. */
4867 struct plt_entry *ent;
4868 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4869 if (ent->plt.refcount > 0)
4872 || SYMBOL_CALLS_LOCAL (info, h)
4873 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4874 && h->root.type == bfd_link_hash_undefweak))
4876 h->plt.plist = NULL;
4877 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
4881 h->plt.plist = NULL;
4883 /* If this is a weak symbol, and there is a real definition, the
4884 processor independent code will have arranged for us to see the
4885 real definition first, and we can just use the same value. */
4886 if (h->weakdef != NULL)
4888 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4889 || h->weakdef->root.type == bfd_link_hash_defweak);
4890 h->root.u.def.section = h->weakdef->root.u.def.section;
4891 h->root.u.def.value = h->weakdef->root.u.def.value;
4892 if (ELIMINATE_COPY_RELOCS)
4893 h->elf_link_hash_flags
4894 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
4895 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
4899 /* If we are creating a shared library, we must presume that the
4900 only references to the symbol are via the global offset table.
4901 For such cases we need not do anything here; the relocations will
4902 be handled correctly by relocate_section. */
4906 /* If there are no references to this symbol that do not use the
4907 GOT, we don't need to generate a copy reloc. */
4908 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4911 if (ELIMINATE_COPY_RELOCS)
4913 struct ppc_link_hash_entry * eh;
4914 struct ppc_dyn_relocs *p;
4916 eh = (struct ppc_link_hash_entry *) h;
4917 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4919 s = p->sec->output_section;
4920 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4924 /* If we didn't find any dynamic relocs in read-only sections, then
4925 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4928 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
4933 if (h->plt.plist != NULL)
4935 /* We should never get here, but unfortunately there are versions
4936 of gcc out there that improperly (for this ABI) put initialized
4937 function pointers, vtable refs and suchlike in read-only
4938 sections. Allow them to proceed, but warn that this might
4939 break at runtime. */
4940 (*_bfd_error_handler)
4941 (_("copy reloc against `%s' requires lazy plt linking; "
4942 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
4943 h->root.root.string);
4946 /* This is a reference to a symbol defined by a dynamic object which
4947 is not a function. */
4949 /* We must allocate the symbol in our .dynbss section, which will
4950 become part of the .bss section of the executable. There will be
4951 an entry for this symbol in the .dynsym section. The dynamic
4952 object will contain position independent code, so all references
4953 from the dynamic object to this symbol will go through the global
4954 offset table. The dynamic linker will use the .dynsym entry to
4955 determine the address it must put in the global offset table, so
4956 both the dynamic object and the regular object will refer to the
4957 same memory location for the variable. */
4959 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4960 to copy the initial value out of the dynamic object and into the
4961 runtime process image. We need to remember the offset into the
4962 .rela.bss section we are going to use. */
4963 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4965 htab->relbss->size += sizeof (Elf64_External_Rela);
4966 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4969 /* We need to figure out the alignment required for this symbol. I
4970 have no idea how ELF linkers handle this. */
4971 power_of_two = bfd_log2 (h->size);
4972 if (power_of_two > 4)
4975 /* Apply the required alignment. */
4977 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4978 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4980 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4984 /* Define the symbol as being at this point in the section. */
4985 h->root.u.def.section = s;
4986 h->root.u.def.value = s->size;
4988 /* Increment the section size to make room for the symbol. */
4994 /* If given a function descriptor symbol, hide both the function code
4995 sym and the descriptor. */
4997 ppc64_elf_hide_symbol (struct bfd_link_info *info,
4998 struct elf_link_hash_entry *h,
4999 bfd_boolean force_local)
5001 struct ppc_link_hash_entry *eh;
5002 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5004 eh = (struct ppc_link_hash_entry *) h;
5005 if (eh->is_func_descriptor)
5007 struct ppc_link_hash_entry *fh = eh->oh;
5012 struct ppc_link_hash_table *htab;
5015 /* We aren't supposed to use alloca in BFD because on
5016 systems which do not have alloca the version in libiberty
5017 calls xmalloc, which might cause the program to crash
5018 when it runs out of memory. This function doesn't have a
5019 return status, so there's no way to gracefully return an
5020 error. So cheat. We know that string[-1] can be safely
5021 accessed; It's either a string in an ELF string table,
5022 or allocated in an objalloc structure. */
5024 p = eh->elf.root.root.string - 1;
5027 htab = ppc_hash_table (info);
5028 fh = (struct ppc_link_hash_entry *)
5029 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5032 /* Unfortunately, if it so happens that the string we were
5033 looking for was allocated immediately before this string,
5034 then we overwrote the string terminator. That's the only
5035 reason the lookup should fail. */
5038 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5039 while (q >= eh->elf.root.root.string && *q == *p)
5041 if (q < eh->elf.root.root.string && *p == '.')
5042 fh = (struct ppc_link_hash_entry *)
5043 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5052 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5057 get_sym_h (struct elf_link_hash_entry **hp,
5058 Elf_Internal_Sym **symp,
5061 Elf_Internal_Sym **locsymsp,
5062 unsigned long r_symndx,
5065 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5067 if (r_symndx >= symtab_hdr->sh_info)
5069 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5070 struct elf_link_hash_entry *h;
5072 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5073 while (h->root.type == bfd_link_hash_indirect
5074 || h->root.type == bfd_link_hash_warning)
5075 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5083 if (symsecp != NULL)
5085 asection *symsec = NULL;
5086 if (h->root.type == bfd_link_hash_defined
5087 || h->root.type == bfd_link_hash_defweak)
5088 symsec = h->root.u.def.section;
5092 if (tls_maskp != NULL)
5094 struct ppc_link_hash_entry *eh;
5096 eh = (struct ppc_link_hash_entry *) h;
5097 *tls_maskp = &eh->tls_mask;
5102 Elf_Internal_Sym *sym;
5103 Elf_Internal_Sym *locsyms = *locsymsp;
5105 if (locsyms == NULL)
5107 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5108 if (locsyms == NULL)
5109 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5110 symtab_hdr->sh_info,
5111 0, NULL, NULL, NULL);
5112 if (locsyms == NULL)
5114 *locsymsp = locsyms;
5116 sym = locsyms + r_symndx;
5124 if (symsecp != NULL)
5126 asection *symsec = NULL;
5127 if ((sym->st_shndx != SHN_UNDEF
5128 && sym->st_shndx < SHN_LORESERVE)
5129 || sym->st_shndx > SHN_HIRESERVE)
5130 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5134 if (tls_maskp != NULL)
5136 struct got_entry **lgot_ents;
5140 lgot_ents = elf_local_got_ents (ibfd);
5141 if (lgot_ents != NULL)
5143 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5144 tls_mask = &lgot_masks[r_symndx];
5146 *tls_maskp = tls_mask;
5152 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5153 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5154 type suitable for optimization, and 1 otherwise. */
5157 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5158 Elf_Internal_Sym **locsymsp,
5159 const Elf_Internal_Rela *rel, bfd *ibfd)
5161 unsigned long r_symndx;
5163 struct elf_link_hash_entry *h;
5164 Elf_Internal_Sym *sym;
5168 r_symndx = ELF64_R_SYM (rel->r_info);
5169 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5172 if ((*tls_maskp != NULL && **tls_maskp != 0)
5174 || ppc64_elf_section_data (sec)->t_symndx == NULL)
5177 /* Look inside a TOC section too. */
5180 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5181 off = h->root.u.def.value;
5184 off = sym->st_value;
5185 off += rel->r_addend;
5186 BFD_ASSERT (off % 8 == 0);
5187 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
5188 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
5189 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5191 if (toc_symndx != NULL)
5192 *toc_symndx = r_symndx;
5194 || ((h->root.type == bfd_link_hash_defined
5195 || h->root.type == bfd_link_hash_defweak)
5196 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
5197 && (next_r == -1 || next_r == -2))
5202 /* Adjust all global syms defined in opd sections. In gcc generated
5203 code for the old ABI, these will already have been done. */
5206 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5208 struct ppc_link_hash_entry *eh;
5212 if (h->root.type == bfd_link_hash_indirect)
5215 if (h->root.type == bfd_link_hash_warning)
5216 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5218 if (h->root.type != bfd_link_hash_defined
5219 && h->root.type != bfd_link_hash_defweak)
5222 eh = (struct ppc_link_hash_entry *) h;
5223 if (eh->adjust_done)
5226 sym_sec = eh->elf.root.u.def.section;
5227 opd_adjust = get_opd_info (sym_sec);
5228 if (opd_adjust != NULL)
5230 long adjust = opd_adjust[eh->elf.root.u.def.value / 24];
5233 /* This entry has been deleted. */
5234 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
5237 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
5238 if (elf_discarded_section (dsec))
5240 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
5244 eh->elf.root.u.def.value = 0;
5245 eh->elf.root.u.def.section = dsec;
5248 eh->elf.root.u.def.value += adjust;
5249 eh->adjust_done = 1;
5254 /* Remove unused Official Procedure Descriptor entries. Currently we
5255 only remove those associated with functions in discarded link-once
5256 sections, or weakly defined functions that have been overridden. It
5257 would be possible to remove many more entries for statically linked
5261 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info)
5264 bfd_boolean some_edited = FALSE;
5266 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5269 Elf_Internal_Rela *relstart, *rel, *relend;
5270 Elf_Internal_Shdr *symtab_hdr;
5271 Elf_Internal_Sym *local_syms;
5272 struct elf_link_hash_entry **sym_hashes;
5276 bfd_boolean need_edit;
5278 sec = bfd_get_section_by_name (ibfd, ".opd");
5282 amt = sec->size * sizeof (long) / 24;
5283 opd_adjust = get_opd_info (sec);
5284 if (opd_adjust == NULL)
5286 /* Must be a ld -r link. ie. check_relocs hasn't been
5288 opd_adjust = bfd_zalloc (obfd, amt);
5289 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
5291 memset (opd_adjust, 0, amt);
5293 if (sec->output_section == bfd_abs_section_ptr)
5296 /* Look through the section relocs. */
5297 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
5301 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5302 sym_hashes = elf_sym_hashes (ibfd);
5304 /* Read the relocations. */
5305 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5307 if (relstart == NULL)
5310 /* First run through the relocs to check they are sane, and to
5311 determine whether we need to edit this opd section. */
5314 relend = relstart + sec->reloc_count;
5315 for (rel = relstart; rel < relend; )
5317 enum elf_ppc64_reloc_type r_type;
5318 unsigned long r_symndx;
5320 struct elf_link_hash_entry *h;
5321 Elf_Internal_Sym *sym;
5323 /* .opd contains a regular array of 24 byte entries. We're
5324 only interested in the reloc pointing to a function entry
5326 if (rel->r_offset != offset
5327 || rel + 1 >= relend
5328 || (rel + 1)->r_offset != offset + 8)
5330 /* If someone messes with .opd alignment then after a
5331 "ld -r" we might have padding in the middle of .opd.
5332 Also, there's nothing to prevent someone putting
5333 something silly in .opd with the assembler. No .opd
5334 optimization for them! */
5335 (*_bfd_error_handler)
5336 (_("%B: .opd is not a regular array of opd entries"), ibfd);
5341 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
5342 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
5344 (*_bfd_error_handler)
5345 (_("%B: unexpected reloc type %u in .opd section"),
5351 r_symndx = ELF64_R_SYM (rel->r_info);
5352 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5356 if (sym_sec == NULL || sym_sec->owner == NULL)
5358 const char *sym_name;
5360 sym_name = h->root.root.string;
5362 sym_name = bfd_elf_local_sym_name (ibfd, sym);
5364 (*_bfd_error_handler)
5365 (_("%B: undefined sym `%s' in .opd section"),
5371 /* opd entries are always for functions defined in the
5372 current input bfd. If the symbol isn't defined in the
5373 input bfd, then we won't be using the function in this
5374 bfd; It must be defined in a linkonce section in another
5375 bfd, or is weak. It's also possible that we are
5376 discarding the function due to a linker script /DISCARD/,
5377 which we test for via the output_section. */
5378 if (sym_sec->owner != ibfd
5379 || sym_sec->output_section == bfd_abs_section_ptr)
5384 /* Allow for the possibility of a reloc on the third word. */
5386 && rel->r_offset == offset - 8)
5392 Elf_Internal_Rela *write_rel;
5393 bfd_byte *rptr, *wptr;
5396 /* This seems a waste of time as input .opd sections are all
5397 zeros as generated by gcc, but I suppose there's no reason
5398 this will always be so. We might start putting something in
5399 the third word of .opd entries. */
5400 if ((sec->flags & SEC_IN_MEMORY) == 0)
5403 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
5408 if (local_syms != NULL
5409 && symtab_hdr->contents != (unsigned char *) local_syms)
5411 if (elf_section_data (sec)->relocs != relstart)
5415 sec->contents = loc;
5416 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
5419 elf_section_data (sec)->relocs = relstart;
5421 wptr = sec->contents;
5422 rptr = sec->contents;
5423 write_rel = relstart;
5426 for (rel = relstart; rel < relend; rel++)
5428 unsigned long r_symndx;
5430 struct elf_link_hash_entry *h;
5431 Elf_Internal_Sym *sym;
5433 r_symndx = ELF64_R_SYM (rel->r_info);
5434 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5438 if (rel->r_offset == offset)
5440 struct ppc_link_hash_entry *fdh = NULL;
5442 && h->root.root.string[0] == '.')
5443 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
5444 ppc_hash_table (info));
5446 skip = (sym_sec->owner != ibfd
5447 || sym_sec->output_section == bfd_abs_section_ptr);
5450 if (fdh != NULL && sym_sec->owner == ibfd)
5452 /* Arrange for the function descriptor sym
5454 fdh->elf.root.u.def.value = 0;
5455 fdh->elf.root.u.def.section = sym_sec;
5457 opd_adjust[rel->r_offset / 24] = -1;
5461 /* We'll be keeping this opd entry. */
5465 /* Redefine the function descriptor symbol to
5466 this location in the opd section. It is
5467 necessary to update the value here rather
5468 than using an array of adjustments as we do
5469 for local symbols, because various places
5470 in the generic ELF code use the value
5471 stored in u.def.value. */
5472 fdh->elf.root.u.def.value = wptr - sec->contents;
5473 fdh->adjust_done = 1;
5476 /* Local syms are a bit tricky. We could
5477 tweak them as they can be cached, but
5478 we'd need to look through the local syms
5479 for the function descriptor sym which we
5480 don't have at the moment. So keep an
5481 array of adjustments. */
5482 opd_adjust[rel->r_offset / 24] = wptr - rptr;
5485 memcpy (wptr, rptr, 24);
5494 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
5497 /* We won't be needing dynamic relocs here. */
5498 struct ppc_dyn_relocs **pp;
5499 struct ppc_dyn_relocs *p;
5502 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5503 else if (sym_sec != NULL)
5504 pp = ((struct ppc_dyn_relocs **)
5505 &elf_section_data (sym_sec)->local_dynrel);
5507 pp = ((struct ppc_dyn_relocs **)
5508 &elf_section_data (sec)->local_dynrel);
5509 while ((p = *pp) != NULL)
5524 /* We need to adjust any reloc offsets to point to the
5525 new opd entries. While we're at it, we may as well
5526 remove redundant relocs. */
5527 rel->r_offset += wptr - rptr;
5528 if (write_rel != rel)
5529 memcpy (write_rel, rel, sizeof (*rel));
5534 sec->size = wptr - sec->contents;
5535 sec->reloc_count = write_rel - relstart;
5536 /* Fudge the size too, as this is used later in
5537 elf_bfd_final_link if we are emitting relocs. */
5538 elf_section_data (sec)->rel_hdr.sh_size
5539 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
5540 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
5543 else if (elf_section_data (sec)->relocs != relstart)
5546 if (local_syms != NULL
5547 && symtab_hdr->contents != (unsigned char *) local_syms)
5549 if (!info->keep_memory)
5552 symtab_hdr->contents = (unsigned char *) local_syms;
5557 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
5562 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
5565 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5567 struct ppc_link_hash_table *htab;
5569 htab = ppc_hash_table (info);
5570 if (htab->tls_get_addr != NULL)
5572 struct ppc_link_hash_entry *h = htab->tls_get_addr;
5574 while (h->elf.root.type == bfd_link_hash_indirect
5575 || h->elf.root.type == bfd_link_hash_warning)
5576 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
5578 htab->tls_get_addr = h;
5580 if (htab->tls_get_addr_fd == NULL
5582 && h->oh->is_func_descriptor)
5583 htab->tls_get_addr_fd = h->oh;
5586 if (htab->tls_get_addr_fd != NULL)
5588 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
5590 while (h->elf.root.type == bfd_link_hash_indirect
5591 || h->elf.root.type == bfd_link_hash_warning)
5592 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
5594 htab->tls_get_addr_fd = h;
5597 return _bfd_elf_tls_setup (obfd, info);
5600 /* Run through all the TLS relocs looking for optimization
5601 opportunities. The linker has been hacked (see ppc64elf.em) to do
5602 a preliminary section layout so that we know the TLS segment
5603 offsets. We can't optimize earlier because some optimizations need
5604 to know the tp offset, and we need to optimize before allocating
5605 dynamic relocations. */
5608 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
5612 struct ppc_link_hash_table *htab;
5614 if (info->relocatable || info->shared)
5617 htab = ppc_hash_table (info);
5618 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5620 Elf_Internal_Sym *locsyms = NULL;
5622 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5623 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5625 Elf_Internal_Rela *relstart, *rel, *relend;
5626 int expecting_tls_get_addr;
5628 /* Read the relocations. */
5629 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5631 if (relstart == NULL)
5634 expecting_tls_get_addr = 0;
5635 relend = relstart + sec->reloc_count;
5636 for (rel = relstart; rel < relend; rel++)
5638 enum elf_ppc64_reloc_type r_type;
5639 unsigned long r_symndx;
5640 struct elf_link_hash_entry *h;
5641 Elf_Internal_Sym *sym;
5644 char tls_set, tls_clear, tls_type = 0;
5646 bfd_boolean ok_tprel, is_local;
5648 r_symndx = ELF64_R_SYM (rel->r_info);
5649 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
5653 if (elf_section_data (sec)->relocs != relstart)
5656 && (elf_tdata (ibfd)->symtab_hdr.contents
5657 != (unsigned char *) locsyms))
5664 if (h->root.type != bfd_link_hash_defined
5665 && h->root.type != bfd_link_hash_defweak)
5667 value = h->root.u.def.value;
5670 /* Symbols referenced by TLS relocs must be of type
5671 STT_TLS. So no need for .opd local sym adjust. */
5672 value = sym->st_value;
5677 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5680 value += sym_sec->output_offset;
5681 value += sym_sec->output_section->vma;
5682 value -= htab->elf.tls_sec->vma;
5683 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
5684 < (bfd_vma) 1 << 32);
5687 r_type = ELF64_R_TYPE (rel->r_info);
5690 case R_PPC64_GOT_TLSLD16:
5691 case R_PPC64_GOT_TLSLD16_LO:
5692 case R_PPC64_GOT_TLSLD16_HI:
5693 case R_PPC64_GOT_TLSLD16_HA:
5694 /* These relocs should never be against a symbol
5695 defined in a shared lib. Leave them alone if
5696 that turns out to be the case. */
5697 ppc64_tlsld_got (ibfd)->refcount -= 1;
5704 tls_type = TLS_TLS | TLS_LD;
5705 expecting_tls_get_addr = 1;
5708 case R_PPC64_GOT_TLSGD16:
5709 case R_PPC64_GOT_TLSGD16_LO:
5710 case R_PPC64_GOT_TLSGD16_HI:
5711 case R_PPC64_GOT_TLSGD16_HA:
5717 tls_set = TLS_TLS | TLS_TPRELGD;
5719 tls_type = TLS_TLS | TLS_GD;
5720 expecting_tls_get_addr = 1;
5723 case R_PPC64_GOT_TPREL16_DS:
5724 case R_PPC64_GOT_TPREL16_LO_DS:
5725 case R_PPC64_GOT_TPREL16_HI:
5726 case R_PPC64_GOT_TPREL16_HA:
5727 expecting_tls_get_addr = 0;
5732 tls_clear = TLS_TPREL;
5733 tls_type = TLS_TLS | TLS_TPREL;
5740 case R_PPC64_REL14_BRTAKEN:
5741 case R_PPC64_REL14_BRNTAKEN:
5744 && (h == &htab->tls_get_addr->elf
5745 || h == &htab->tls_get_addr_fd->elf))
5747 if (!expecting_tls_get_addr
5749 && ((ELF64_R_TYPE (rel[-1].r_info)
5751 || (ELF64_R_TYPE (rel[-1].r_info)
5752 == R_PPC64_TOC16_LO)))
5754 /* Check for toc tls entries. */
5758 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
5762 if (toc_tls != NULL)
5763 expecting_tls_get_addr = retval > 1;
5766 if (expecting_tls_get_addr)
5768 struct plt_entry *ent;
5769 for (ent = h->plt.plist; ent; ent = ent->next)
5770 if (ent->addend == 0)
5772 if (ent->plt.refcount > 0)
5773 ent->plt.refcount -= 1;
5778 expecting_tls_get_addr = 0;
5781 case R_PPC64_TPREL64:
5782 expecting_tls_get_addr = 0;
5786 tls_set = TLS_EXPLICIT;
5787 tls_clear = TLS_TPREL;
5793 case R_PPC64_DTPMOD64:
5794 expecting_tls_get_addr = 0;
5795 if (rel + 1 < relend
5797 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
5798 && rel[1].r_offset == rel->r_offset + 8)
5802 tls_set = TLS_EXPLICIT | TLS_GD;
5805 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
5814 tls_set = TLS_EXPLICIT;
5820 expecting_tls_get_addr = 0;
5824 if ((tls_set & TLS_EXPLICIT) == 0)
5826 struct got_entry *ent;
5828 /* Adjust got entry for this reloc. */
5832 ent = elf_local_got_ents (ibfd)[r_symndx];
5834 for (; ent != NULL; ent = ent->next)
5835 if (ent->addend == rel->r_addend
5836 && ent->owner == ibfd
5837 && ent->tls_type == tls_type)
5844 /* We managed to get rid of a got entry. */
5845 if (ent->got.refcount > 0)
5846 ent->got.refcount -= 1;
5851 struct ppc_link_hash_entry * eh;
5852 struct ppc_dyn_relocs **pp;
5853 struct ppc_dyn_relocs *p;
5855 /* Adjust dynamic relocs. */
5856 eh = (struct ppc_link_hash_entry *) h;
5857 for (pp = &eh->dyn_relocs;
5862 /* If we got rid of a DTPMOD/DTPREL reloc
5863 pair then we'll lose one or two dyn
5865 if (tls_set == (TLS_EXPLICIT | TLS_GD))
5874 *tls_mask |= tls_set;
5875 *tls_mask &= ~tls_clear;
5878 if (elf_section_data (sec)->relocs != relstart)
5883 && (elf_tdata (ibfd)->symtab_hdr.contents
5884 != (unsigned char *) locsyms))
5886 if (!info->keep_memory)
5889 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
5895 /* Allocate space in .plt, .got and associated reloc sections for
5899 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5901 struct bfd_link_info *info;
5902 struct ppc_link_hash_table *htab;
5904 struct ppc_link_hash_entry *eh;
5905 struct ppc_dyn_relocs *p;
5906 struct got_entry *gent;
5908 if (h->root.type == bfd_link_hash_indirect)
5911 if (h->root.type == bfd_link_hash_warning)
5912 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5914 info = (struct bfd_link_info *) inf;
5915 htab = ppc_hash_table (info);
5917 if (htab->elf.dynamic_sections_created
5919 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5921 struct plt_entry *pent;
5922 bfd_boolean doneone = FALSE;
5923 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
5924 if (pent->plt.refcount > 0)
5926 /* If this is the first .plt entry, make room for the special
5930 s->size += PLT_INITIAL_ENTRY_SIZE;
5932 pent->plt.offset = s->size;
5934 /* Make room for this entry. */
5935 s->size += PLT_ENTRY_SIZE;
5937 /* Make room for the .glink code. */
5940 s->size += GLINK_CALL_STUB_SIZE;
5941 /* We need bigger stubs past index 32767. */
5942 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
5946 /* We also need to make an entry in the .rela.plt section. */
5948 s->size += sizeof (Elf64_External_Rela);
5952 pent->plt.offset = (bfd_vma) -1;
5955 h->plt.plist = NULL;
5956 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5961 h->plt.plist = NULL;
5962 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5965 eh = (struct ppc_link_hash_entry *) h;
5966 /* Run through the TLS GD got entries first if we're changing them
5968 if ((eh->tls_mask & TLS_TPRELGD) != 0)
5969 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5970 if (gent->got.refcount > 0
5971 && (gent->tls_type & TLS_GD) != 0)
5973 /* This was a GD entry that has been converted to TPREL. If
5974 there happens to be a TPREL entry we can use that one. */
5975 struct got_entry *ent;
5976 for (ent = h->got.glist; ent != NULL; ent = ent->next)
5977 if (ent->got.refcount > 0
5978 && (ent->tls_type & TLS_TPREL) != 0
5979 && ent->addend == gent->addend
5980 && ent->owner == gent->owner)
5982 gent->got.refcount = 0;
5986 /* If not, then we'll be using our own TPREL entry. */
5987 if (gent->got.refcount != 0)
5988 gent->tls_type = TLS_TLS | TLS_TPREL;
5991 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5992 if (gent->got.refcount > 0)
5996 /* Make sure this symbol is output as a dynamic symbol.
5997 Undefined weak syms won't yet be marked as dynamic,
5998 nor will all TLS symbols. */
5999 if (h->dynindx == -1
6000 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
6002 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6006 if ((gent->tls_type & TLS_LD) != 0
6007 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
6009 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
6013 s = ppc64_elf_tdata (gent->owner)->got;
6014 gent->got.offset = s->size;
6016 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
6017 dyn = htab->elf.dynamic_sections_created;
6019 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
6020 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6021 || h->root.type != bfd_link_hash_undefweak))
6022 ppc64_elf_tdata (gent->owner)->relgot->size
6023 += (gent->tls_type & eh->tls_mask & TLS_GD
6024 ? 2 * sizeof (Elf64_External_Rela)
6025 : sizeof (Elf64_External_Rela));
6028 gent->got.offset = (bfd_vma) -1;
6030 if (eh->dyn_relocs == NULL)
6033 /* In the shared -Bsymbolic case, discard space allocated for
6034 dynamic pc-relative relocs against symbols which turn out to be
6035 defined in regular objects. For the normal shared case, discard
6036 space for relocs that have become local due to symbol visibility
6041 /* Relocs that use pc_count are those that appear on a call insn,
6042 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
6043 generated via assembly. We want calls to protected symbols to
6044 resolve directly to the function rather than going via the plt.
6045 If people want function pointer comparisons to work as expected
6046 then they should avoid writing weird assembly. */
6047 if (SYMBOL_CALLS_LOCAL (info, h))
6049 struct ppc_dyn_relocs **pp;
6051 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
6053 p->count -= p->pc_count;
6062 /* Also discard relocs on undefined weak syms with non-default
6064 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6065 && h->root.type == bfd_link_hash_undefweak)
6066 eh->dyn_relocs = NULL;
6068 else if (ELIMINATE_COPY_RELOCS)
6070 /* For the non-shared case, discard space for relocs against
6071 symbols which turn out to need copy relocs or are not
6074 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
6075 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
6076 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
6078 /* Make sure this symbol is output as a dynamic symbol.
6079 Undefined weak syms won't yet be marked as dynamic. */
6080 if (h->dynindx == -1
6081 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
6083 if (! bfd_elf_link_record_dynamic_symbol (info, h))
6087 /* If that succeeded, we know we'll be keeping all the
6089 if (h->dynindx != -1)
6093 eh->dyn_relocs = NULL;
6098 /* Finally, allocate space. */
6099 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6101 asection *sreloc = elf_section_data (p->sec)->sreloc;
6102 sreloc->size += p->count * sizeof (Elf64_External_Rela);
6108 /* Find any dynamic relocs that apply to read-only sections. */
6111 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
6113 struct ppc_link_hash_entry *eh;
6114 struct ppc_dyn_relocs *p;
6116 if (h->root.type == bfd_link_hash_warning)
6117 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6119 eh = (struct ppc_link_hash_entry *) h;
6120 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6122 asection *s = p->sec->output_section;
6124 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6126 struct bfd_link_info *info = inf;
6128 info->flags |= DF_TEXTREL;
6130 /* Not an error, just cut short the traversal. */
6137 /* Set the sizes of the dynamic sections. */
6140 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
6141 struct bfd_link_info *info)
6143 struct ppc_link_hash_table *htab;
6149 htab = ppc_hash_table (info);
6150 dynobj = htab->elf.dynobj;
6154 if (htab->elf.dynamic_sections_created)
6156 /* Set the contents of the .interp section to the interpreter. */
6157 if (info->executable)
6159 s = bfd_get_section_by_name (dynobj, ".interp");
6162 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
6163 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
6167 /* Set up .got offsets for local syms, and space for local dynamic
6169 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6171 struct got_entry **lgot_ents;
6172 struct got_entry **end_lgot_ents;
6174 bfd_size_type locsymcount;
6175 Elf_Internal_Shdr *symtab_hdr;
6178 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
6181 if (ppc64_tlsld_got (ibfd)->refcount > 0)
6183 s = ppc64_elf_tdata (ibfd)->got;
6184 ppc64_tlsld_got (ibfd)->offset = s->size;
6188 srel = ppc64_elf_tdata (ibfd)->relgot;
6189 srel->size += sizeof (Elf64_External_Rela);
6193 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
6195 for (s = ibfd->sections; s != NULL; s = s->next)
6197 struct ppc_dyn_relocs *p;
6199 for (p = *((struct ppc_dyn_relocs **)
6200 &elf_section_data (s)->local_dynrel);
6204 if (!bfd_is_abs_section (p->sec)
6205 && bfd_is_abs_section (p->sec->output_section))
6207 /* Input section has been discarded, either because
6208 it is a copy of a linkonce section or due to
6209 linker script /DISCARD/, so we'll be discarding
6212 else if (p->count != 0)
6214 srel = elf_section_data (p->sec)->sreloc;
6215 srel->size += p->count * sizeof (Elf64_External_Rela);
6216 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
6217 info->flags |= DF_TEXTREL;
6222 lgot_ents = elf_local_got_ents (ibfd);
6226 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6227 locsymcount = symtab_hdr->sh_info;
6228 end_lgot_ents = lgot_ents + locsymcount;
6229 lgot_masks = (char *) end_lgot_ents;
6230 s = ppc64_elf_tdata (ibfd)->got;
6231 srel = ppc64_elf_tdata (ibfd)->relgot;
6232 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
6234 struct got_entry *ent;
6236 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
6237 if (ent->got.refcount > 0)
6239 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
6241 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
6243 ppc64_tlsld_got (ibfd)->offset = s->size;
6246 srel->size += sizeof (Elf64_External_Rela);
6248 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
6252 ent->got.offset = s->size;
6253 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
6257 srel->size += 2 * sizeof (Elf64_External_Rela);
6263 srel->size += sizeof (Elf64_External_Rela);
6268 ent->got.offset = (bfd_vma) -1;
6272 /* Allocate global sym .plt and .got entries, and space for global
6273 sym dynamic relocs. */
6274 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
6276 /* We now have determined the sizes of the various dynamic sections.
6277 Allocate memory for them. */
6279 for (s = dynobj->sections; s != NULL; s = s->next)
6281 if ((s->flags & SEC_LINKER_CREATED) == 0)
6284 if (s == htab->brlt || s == htab->relbrlt)
6285 /* These haven't been allocated yet; don't strip. */
6287 else if (s == htab->got
6289 || s == htab->glink)
6291 /* Strip this section if we don't need it; see the
6294 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
6298 /* If we don't need this section, strip it from the
6299 output file. This is mostly to handle .rela.bss and
6300 .rela.plt. We must create both sections in
6301 create_dynamic_sections, because they must be created
6302 before the linker maps input sections to output
6303 sections. The linker does that before
6304 adjust_dynamic_symbol is called, and it is that
6305 function which decides whether anything needs to go
6306 into these sections. */
6310 if (s != htab->relplt)
6313 /* We use the reloc_count field as a counter if we need
6314 to copy relocs into the output file. */
6320 /* It's not one of our sections, so don't allocate space. */
6326 _bfd_strip_section_from_output (info, s);
6330 /* .plt is in the bss section. We don't initialise it. */
6334 /* Allocate memory for the section contents. We use bfd_zalloc
6335 here in case unused entries are not reclaimed before the
6336 section's contents are written out. This should not happen,
6337 but this way if it does we get a R_PPC64_NONE reloc in .rela
6338 sections instead of garbage.
6339 We also rely on the section contents being zero when writing
6341 s->contents = bfd_zalloc (dynobj, s->size);
6342 if (s->contents == NULL)
6346 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6348 s = ppc64_elf_tdata (ibfd)->got;
6349 if (s != NULL && s != htab->got)
6352 _bfd_strip_section_from_output (info, s);
6355 s->contents = bfd_zalloc (ibfd, s->size);
6356 if (s->contents == NULL)
6360 s = ppc64_elf_tdata (ibfd)->relgot;
6364 _bfd_strip_section_from_output (info, s);
6367 s->contents = bfd_zalloc (ibfd, s->size);
6368 if (s->contents == NULL)
6376 if (htab->elf.dynamic_sections_created)
6378 /* Add some entries to the .dynamic section. We fill in the
6379 values later, in ppc64_elf_finish_dynamic_sections, but we
6380 must add the entries now so that we get the correct size for
6381 the .dynamic section. The DT_DEBUG entry is filled in by the
6382 dynamic linker and used by the debugger. */
6383 #define add_dynamic_entry(TAG, VAL) \
6384 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6386 if (info->executable)
6388 if (!add_dynamic_entry (DT_DEBUG, 0))
6392 if (htab->plt != NULL && htab->plt->size != 0)
6394 if (!add_dynamic_entry (DT_PLTGOT, 0)
6395 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6396 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6397 || !add_dynamic_entry (DT_JMPREL, 0)
6398 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
6404 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
6405 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
6411 if (!add_dynamic_entry (DT_RELA, 0)
6412 || !add_dynamic_entry (DT_RELASZ, 0)
6413 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
6416 /* If any dynamic relocs apply to a read-only section,
6417 then we need a DT_TEXTREL entry. */
6418 if ((info->flags & DF_TEXTREL) == 0)
6419 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
6421 if ((info->flags & DF_TEXTREL) != 0)
6423 if (!add_dynamic_entry (DT_TEXTREL, 0))
6428 #undef add_dynamic_entry
6433 /* Determine the type of stub needed, if any, for a call. */
6435 static inline enum ppc_stub_type
6436 ppc_type_of_stub (asection *input_sec,
6437 const Elf_Internal_Rela *rel,
6438 struct ppc_link_hash_entry **hash,
6439 bfd_vma destination)
6441 struct ppc_link_hash_entry *h = *hash;
6443 bfd_vma branch_offset;
6444 bfd_vma max_branch_offset;
6445 enum elf_ppc64_reloc_type r_type;
6450 && h->oh->is_func_descriptor)
6453 if (h->elf.dynindx != -1)
6455 struct plt_entry *ent;
6457 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
6458 if (ent->addend == rel->r_addend
6459 && ent->plt.offset != (bfd_vma) -1)
6462 return ppc_stub_plt_call;
6466 if (!(h->elf.root.type == bfd_link_hash_defined
6467 || h->elf.root.type == bfd_link_hash_defweak)
6468 || h->elf.root.u.def.section->output_section == NULL)
6469 return ppc_stub_none;
6472 /* Determine where the call point is. */
6473 location = (input_sec->output_offset
6474 + input_sec->output_section->vma
6477 branch_offset = destination - location;
6478 r_type = ELF64_R_TYPE (rel->r_info);
6480 /* Determine if a long branch stub is needed. */
6481 max_branch_offset = 1 << 25;
6482 if (r_type != R_PPC64_REL24)
6483 max_branch_offset = 1 << 15;
6485 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
6486 /* We need a stub. Figure out whether a long_branch or plt_branch
6488 return ppc_stub_long_branch;
6490 return ppc_stub_none;
6493 /* Build a .plt call stub. */
6495 static inline bfd_byte *
6496 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
6498 #define PPC_LO(v) ((v) & 0xffff)
6499 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6500 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6502 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
6503 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
6504 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6505 if (PPC_HA (offset + 8) != PPC_HA (offset))
6506 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
6508 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
6509 if (PPC_HA (offset + 8) != PPC_HA (offset))
6510 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
6512 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
6513 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6514 bfd_put_32 (obfd, BCTR, p), p += 4;
6519 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
6521 struct ppc_stub_hash_entry *stub_entry;
6522 struct ppc_branch_hash_entry *br_entry;
6523 struct bfd_link_info *info;
6524 struct ppc_link_hash_table *htab;
6528 struct plt_entry *ent;
6532 /* Massage our args to the form they really have. */
6533 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6536 htab = ppc_hash_table (info);
6538 /* Make a note of the offset within the stubs for this entry. */
6539 stub_entry->stub_offset = stub_entry->stub_sec->size;
6540 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
6542 htab->stub_count[stub_entry->stub_type - 1] += 1;
6543 switch (stub_entry->stub_type)
6545 case ppc_stub_long_branch:
6546 case ppc_stub_long_branch_r2off:
6547 /* Branches are relative. This is where we are going to. */
6548 off = (stub_entry->target_value
6549 + stub_entry->target_section->output_offset
6550 + stub_entry->target_section->output_section->vma);
6552 /* And this is where we are coming from. */
6553 off -= (stub_entry->stub_offset
6554 + stub_entry->stub_sec->output_offset
6555 + stub_entry->stub_sec->output_section->vma);
6557 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
6563 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6564 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6565 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
6567 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
6569 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
6574 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
6576 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
6579 case ppc_stub_plt_branch:
6580 case ppc_stub_plt_branch_r2off:
6581 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6582 stub_entry->root.string + 9,
6584 if (br_entry == NULL)
6586 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
6587 stub_entry->root.string + 9);
6588 htab->stub_error = TRUE;
6592 off = (stub_entry->target_value
6593 + stub_entry->target_section->output_offset
6594 + stub_entry->target_section->output_section->vma);
6596 bfd_put_64 (htab->brlt->owner, off,
6597 htab->brlt->contents + br_entry->offset);
6601 /* Create a reloc for the branch lookup table entry. */
6602 Elf_Internal_Rela rela;
6605 rela.r_offset = (br_entry->offset
6606 + htab->brlt->output_offset
6607 + htab->brlt->output_section->vma);
6608 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6609 rela.r_addend = off;
6611 rl = htab->relbrlt->contents;
6612 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
6613 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
6616 off = (br_entry->offset
6617 + htab->brlt->output_offset
6618 + htab->brlt->output_section->vma
6619 - elf_gp (htab->brlt->output_section->owner)
6620 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6622 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
6624 (*_bfd_error_handler)
6625 (_("linkage table error against `%s'"),
6626 stub_entry->root.string);
6627 bfd_set_error (bfd_error_bad_value);
6628 htab->stub_error = TRUE;
6633 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
6635 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
6637 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
6644 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6645 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6646 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
6648 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
6650 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
6652 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
6654 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
6658 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
6660 bfd_put_32 (htab->stub_bfd, BCTR, loc);
6663 case ppc_stub_plt_call:
6664 /* Do the best we can for shared libraries built without
6665 exporting ".foo" for each "foo". This can happen when symbol
6666 versioning scripts strip all bar a subset of symbols. */
6667 if (stub_entry->h->oh != NULL
6668 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
6669 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
6671 /* Point the symbol at the stub. There may be multiple stubs,
6672 we don't really care; The main thing is to make this sym
6673 defined somewhere. Maybe defining the symbol in the stub
6674 section is a silly idea. If we didn't do this, htab->top_id
6676 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
6677 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
6678 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
6681 /* Now build the stub. */
6683 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6684 if (ent->addend == stub_entry->addend)
6686 off = ent->plt.offset;
6689 if (off >= (bfd_vma) -2)
6692 off &= ~ (bfd_vma) 1;
6693 off += (htab->plt->output_offset
6694 + htab->plt->output_section->vma
6695 - elf_gp (htab->plt->output_section->owner)
6696 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6698 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
6700 (*_bfd_error_handler)
6701 (_("linkage table error against `%s'"),
6702 stub_entry->h->elf.root.root.string);
6703 bfd_set_error (bfd_error_bad_value);
6704 htab->stub_error = TRUE;
6708 p = build_plt_stub (htab->stub_bfd, loc, off);
6717 stub_entry->stub_sec->size += size;
6719 if (htab->emit_stub_syms
6720 && !(stub_entry->stub_type == ppc_stub_plt_call
6721 && stub_entry->h->oh != NULL
6722 && stub_entry->h->oh->elf.root.type == bfd_link_hash_defined
6723 && stub_entry->h->oh->elf.root.u.def.section == stub_entry->stub_sec
6724 && stub_entry->h->oh->elf.root.u.def.value == stub_entry->stub_offset))
6726 struct elf_link_hash_entry *h;
6727 h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string,
6728 TRUE, FALSE, FALSE);
6731 if (h->root.type == bfd_link_hash_new)
6733 h->root.type = bfd_link_hash_defined;
6734 h->root.u.def.section = stub_entry->stub_sec;
6735 h->root.u.def.value = stub_entry->stub_offset;
6736 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
6737 | ELF_LINK_HASH_DEF_REGULAR
6738 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
6739 | ELF_LINK_FORCED_LOCAL);
6746 /* As above, but don't actually build the stub. Just bump offset so
6747 we know stub section sizes, and select plt_branch stubs where
6748 long_branch stubs won't do. */
6751 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
6753 struct ppc_stub_hash_entry *stub_entry;
6754 struct bfd_link_info *info;
6755 struct ppc_link_hash_table *htab;
6759 /* Massage our args to the form they really have. */
6760 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6763 htab = ppc_hash_table (info);
6765 if (stub_entry->stub_type == ppc_stub_plt_call)
6767 struct plt_entry *ent;
6769 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6770 if (ent->addend == stub_entry->addend)
6772 off = ent->plt.offset & ~(bfd_vma) 1;
6775 if (off >= (bfd_vma) -2)
6777 off += (htab->plt->output_offset
6778 + htab->plt->output_section->vma
6779 - elf_gp (htab->plt->output_section->owner)
6780 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6782 size = PLT_CALL_STUB_SIZE;
6783 if (PPC_HA (off + 16) != PPC_HA (off))
6788 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
6790 off = (stub_entry->target_value
6791 + stub_entry->target_section->output_offset
6792 + stub_entry->target_section->output_section->vma);
6793 off -= (stub_entry->stub_sec->size
6794 + stub_entry->stub_sec->output_offset
6795 + stub_entry->stub_sec->output_section->vma);
6797 /* Reset the stub type from the plt variant in case we now
6798 can reach with a shorter stub. */
6799 if (stub_entry->stub_type >= ppc_stub_plt_branch)
6800 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
6803 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
6809 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
6810 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
6812 struct ppc_branch_hash_entry *br_entry;
6814 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6815 stub_entry->root.string + 9,
6817 if (br_entry == NULL)
6819 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
6820 stub_entry->root.string + 9);
6821 htab->stub_error = TRUE;
6825 if (br_entry->iter != htab->stub_iteration)
6827 br_entry->iter = htab->stub_iteration;
6828 br_entry->offset = htab->brlt->size;
6829 htab->brlt->size += 8;
6832 htab->relbrlt->size += sizeof (Elf64_External_Rela);
6835 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
6837 if (stub_entry->stub_type != ppc_stub_plt_branch)
6842 stub_entry->stub_sec->size += size;
6846 /* Set up various things so that we can make a list of input sections
6847 for each output section included in the link. Returns -1 on error,
6848 0 when no stubs will be needed, and 1 on success. */
6851 ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
6854 int top_id, top_index, id;
6856 asection **input_list;
6858 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6860 if (htab->brlt == NULL)
6863 /* Find the top input section id. */
6864 for (input_bfd = info->input_bfds, top_id = 3;
6866 input_bfd = input_bfd->link_next)
6868 for (section = input_bfd->sections;
6870 section = section->next)
6872 if (top_id < section->id)
6873 top_id = section->id;
6877 htab->top_id = top_id;
6878 amt = sizeof (struct map_stub) * (top_id + 1);
6879 htab->stub_group = bfd_zmalloc (amt);
6880 if (htab->stub_group == NULL)
6883 /* Set toc_off for com, und, abs and ind sections. */
6884 for (id = 0; id < 3; id++)
6885 htab->stub_group[id].toc_off = TOC_BASE_OFF;
6887 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
6889 /* We can't use output_bfd->section_count here to find the top output
6890 section index as some sections may have been removed, and
6891 _bfd_strip_section_from_output doesn't renumber the indices. */
6892 for (section = output_bfd->sections, top_index = 0;
6894 section = section->next)
6896 if (top_index < section->index)
6897 top_index = section->index;
6900 htab->top_index = top_index;
6901 amt = sizeof (asection *) * (top_index + 1);
6902 input_list = bfd_zmalloc (amt);
6903 htab->input_list = input_list;
6904 if (input_list == NULL)
6910 /* The linker repeatedly calls this function for each TOC input section
6911 and linker generated GOT section. Group input bfds such that the toc
6912 within a group is less than 64k in size. Will break with cute linker
6913 scripts that play games with dot in the output toc section. */
6916 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
6918 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6919 bfd_vma addr = isec->output_offset + isec->output_section->vma;
6920 bfd_vma off = addr - htab->toc_curr;
6922 if (off + isec->size > 0x10000)
6923 htab->toc_curr = addr;
6925 elf_gp (isec->owner) = (htab->toc_curr
6926 - elf_gp (isec->output_section->owner)
6930 /* Called after the last call to the above function. */
6933 ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
6934 struct bfd_link_info *info)
6936 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6938 /* toc_curr tracks the TOC offset used for code sections below in
6939 ppc64_elf_next_input_section. Start off at 0x8000. */
6940 htab->toc_curr = TOC_BASE_OFF;
6943 /* No toc references were found in ISEC. If the code in ISEC makes no
6944 calls, then there's no need to use toc adjusting stubs when branching
6945 into ISEC. Actually, indirect calls from ISEC are OK as they will
6949 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
6956 /* We know none of our code bearing sections will need toc stubs. */
6957 if ((isec->flags & SEC_LINKER_CREATED) != 0)
6960 if (isec->size == 0)
6963 /* Hack for linux kernel. .fixup contains branches, but only back to
6964 the function that hit an exception. */
6965 branch_ok = strcmp (isec->name, ".fixup") == 0;
6967 contents = elf_section_data (isec)->this_hdr.contents;
6968 if (contents == NULL)
6970 if (!bfd_malloc_and_get_section (isec->owner, isec, &contents))
6972 if (contents != NULL)
6976 if (info->keep_memory)
6977 elf_section_data (isec)->this_hdr.contents = contents;
6980 /* Code scan, because we don't necessarily have relocs on calls to
6981 static functions. */
6983 for (i = 0; i < isec->size; i += 4)
6985 unsigned long insn = bfd_get_32 (isec->owner, contents + i);
6986 /* Is this a branch? */
6987 if ((insn & (0x3f << 26)) == (18 << 26)
6988 /* If branch and link, it's a function call. */
6990 /* Sibling calls use a plain branch. I don't know a way
6991 of deciding whether a branch is really a sibling call. */
6999 if (elf_section_data (isec)->this_hdr.contents != contents)
7004 /* The linker repeatedly calls this function for each input section,
7005 in the order that input sections are linked into output sections.
7006 Build lists of input sections to determine groupings between which
7007 we may insert linker stubs. */
7010 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
7012 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7015 if ((isec->output_section->flags & SEC_CODE) != 0
7016 && isec->output_section->index <= htab->top_index)
7018 asection **list = htab->input_list + isec->output_section->index;
7019 /* Steal the link_sec pointer for our list. */
7020 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
7021 /* This happens to make the list in reverse order,
7022 which is what we want. */
7023 PREV_SEC (isec) = *list;
7027 /* If a code section has a function that uses the TOC then we need
7028 to use the right TOC (obviously). Also, make sure that .opd gets
7029 the correct TOC value for R_PPC64_TOC relocs that don't have or
7030 can't find their function symbol (shouldn't ever happen now). */
7031 if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
7033 if (elf_gp (isec->owner) != 0)
7034 htab->toc_curr = elf_gp (isec->owner);
7036 else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
7039 isec->has_gp_reloc = ret;
7041 /* Functions that don't use the TOC can belong in any TOC group.
7042 Use the last TOC base. This happens to make _init and _fini
7044 htab->stub_group[isec->id].toc_off = htab->toc_curr;
7048 /* See whether we can group stub sections together. Grouping stub
7049 sections may result in fewer stubs. More importantly, we need to
7050 put all .init* and .fini* stubs at the beginning of the .init or
7051 .fini output sections respectively, because glibc splits the
7052 _init and _fini functions into multiple parts. Putting a stub in
7053 the middle of a function is not a good idea. */
7056 group_sections (struct ppc_link_hash_table *htab,
7057 bfd_size_type stub_group_size,
7058 bfd_boolean stubs_always_before_branch)
7060 asection **list = htab->input_list + htab->top_index;
7063 asection *tail = *list;
7064 while (tail != NULL)
7068 bfd_size_type total;
7069 bfd_boolean big_sec;
7074 big_sec = total >= stub_group_size;
7075 curr_toc = htab->stub_group[tail->id].toc_off;
7077 while ((prev = PREV_SEC (curr)) != NULL
7078 && ((total += curr->output_offset - prev->output_offset)
7080 && htab->stub_group[prev->id].toc_off == curr_toc)
7083 /* OK, the size from the start of CURR to the end is less
7084 than stub_group_size and thus can be handled by one stub
7085 section. (or the tail section is itself larger than
7086 stub_group_size, in which case we may be toast.) We
7087 should really be keeping track of the total size of stubs
7088 added here, as stubs contribute to the final output
7089 section size. That's a little tricky, and this way will
7090 only break if stubs added make the total size more than
7091 2^25, ie. for the default stub_group_size, if stubs total
7092 more than 2097152 bytes, or nearly 75000 plt call stubs. */
7095 prev = PREV_SEC (tail);
7096 /* Set up this stub group. */
7097 htab->stub_group[tail->id].link_sec = curr;
7099 while (tail != curr && (tail = prev) != NULL);
7101 /* But wait, there's more! Input sections up to stub_group_size
7102 bytes before the stub section can be handled by it too.
7103 Don't do this if we have a really large section after the
7104 stubs, as adding more stubs increases the chance that
7105 branches may not reach into the stub section. */
7106 if (!stubs_always_before_branch && !big_sec)
7110 && ((total += tail->output_offset - prev->output_offset)
7112 && htab->stub_group[prev->id].toc_off == curr_toc)
7115 prev = PREV_SEC (tail);
7116 htab->stub_group[tail->id].link_sec = curr;
7122 while (list-- != htab->input_list);
7123 free (htab->input_list);
7127 /* Determine and set the size of the stub section for a final link.
7129 The basic idea here is to examine all the relocations looking for
7130 PC-relative calls to a target that is unreachable with a "bl"
7134 ppc64_elf_size_stubs (bfd *output_bfd,
7135 struct bfd_link_info *info,
7136 bfd_signed_vma group_size,
7137 asection *(*add_stub_section) (const char *, asection *),
7138 void (*layout_sections_again) (void))
7140 bfd_size_type stub_group_size;
7141 bfd_boolean stubs_always_before_branch;
7142 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7144 /* Stash our params away. */
7145 htab->add_stub_section = add_stub_section;
7146 htab->layout_sections_again = layout_sections_again;
7147 stubs_always_before_branch = group_size < 0;
7149 stub_group_size = -group_size;
7151 stub_group_size = group_size;
7152 if (stub_group_size == 1)
7154 /* Default values. */
7155 if (stubs_always_before_branch)
7157 stub_group_size = 0x1e00000;
7158 if (htab->has_14bit_branch)
7159 stub_group_size = 0x7800;
7163 stub_group_size = 0x1c00000;
7164 if (htab->has_14bit_branch)
7165 stub_group_size = 0x7000;
7169 group_sections (htab, stub_group_size, stubs_always_before_branch);
7174 unsigned int bfd_indx;
7176 bfd_boolean stub_changed;
7178 htab->stub_iteration += 1;
7179 stub_changed = FALSE;
7181 for (input_bfd = info->input_bfds, bfd_indx = 0;
7183 input_bfd = input_bfd->link_next, bfd_indx++)
7185 Elf_Internal_Shdr *symtab_hdr;
7187 Elf_Internal_Sym *local_syms = NULL;
7189 /* We'll need the symbol table in a second. */
7190 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
7191 if (symtab_hdr->sh_info == 0)
7194 /* Walk over each section attached to the input bfd. */
7195 for (section = input_bfd->sections;
7197 section = section->next)
7199 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
7201 /* If there aren't any relocs, then there's nothing more
7203 if ((section->flags & SEC_RELOC) == 0
7204 || section->reloc_count == 0)
7207 /* If this section is a link-once section that will be
7208 discarded, then don't create any stubs. */
7209 if (section->output_section == NULL
7210 || section->output_section->owner != output_bfd)
7213 /* Get the relocs. */
7215 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
7217 if (internal_relocs == NULL)
7218 goto error_ret_free_local;
7220 /* Now examine each relocation. */
7221 irela = internal_relocs;
7222 irelaend = irela + section->reloc_count;
7223 for (; irela < irelaend; irela++)
7225 enum elf_ppc64_reloc_type r_type;
7226 unsigned int r_indx;
7227 enum ppc_stub_type stub_type;
7228 struct ppc_stub_hash_entry *stub_entry;
7229 asection *sym_sec, *code_sec;
7231 bfd_vma destination;
7232 bfd_boolean ok_dest;
7233 struct ppc_link_hash_entry *hash;
7234 struct ppc_link_hash_entry *fdh;
7235 struct elf_link_hash_entry *h;
7236 Elf_Internal_Sym *sym;
7238 const asection *id_sec;
7241 r_type = ELF64_R_TYPE (irela->r_info);
7242 r_indx = ELF64_R_SYM (irela->r_info);
7244 if (r_type >= R_PPC64_max)
7246 bfd_set_error (bfd_error_bad_value);
7247 goto error_ret_free_internal;
7250 /* Only look for stubs on branch instructions. */
7251 if (r_type != R_PPC64_REL24
7252 && r_type != R_PPC64_REL14
7253 && r_type != R_PPC64_REL14_BRTAKEN
7254 && r_type != R_PPC64_REL14_BRNTAKEN)
7257 /* Now determine the call target, its name, value,
7259 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7261 goto error_ret_free_internal;
7262 hash = (struct ppc_link_hash_entry *) h;
7268 sym_value = sym->st_value;
7274 /* Recognise an old ABI func code entry sym, and
7275 use the func descriptor sym instead. */
7276 if (hash->elf.root.type == bfd_link_hash_undefweak
7277 && hash->elf.root.root.string[0] == '.'
7278 && (fdh = get_fdh (hash, htab)) != NULL)
7280 if (fdh->elf.root.type == bfd_link_hash_defined
7281 || fdh->elf.root.type == bfd_link_hash_defweak)
7283 sym_sec = fdh->elf.root.u.def.section;
7284 sym_value = fdh->elf.root.u.def.value;
7285 if (sym_sec->output_section != NULL)
7291 else if (hash->elf.root.type == bfd_link_hash_defined
7292 || hash->elf.root.type == bfd_link_hash_defweak)
7294 sym_value = hash->elf.root.u.def.value;
7295 if (sym_sec->output_section != NULL)
7298 else if (hash->elf.root.type == bfd_link_hash_undefweak)
7300 else if (hash->elf.root.type == bfd_link_hash_undefined)
7304 bfd_set_error (bfd_error_bad_value);
7305 goto error_ret_free_internal;
7312 sym_value += irela->r_addend;
7313 destination = (sym_value
7314 + sym_sec->output_offset
7315 + sym_sec->output_section->vma);
7319 opd_adjust = get_opd_info (sym_sec);
7320 if (opd_adjust != NULL)
7326 long adjust = opd_adjust[sym_value / 24];
7329 sym_value += adjust;
7331 dest = opd_entry_value (sym_sec, sym_value,
7332 &code_sec, &sym_value);
7333 if (dest != (bfd_vma) -1)
7338 /* Fixup old ABI sym to point at code
7340 hash->elf.root.type = bfd_link_hash_defweak;
7341 hash->elf.root.u.def.section = code_sec;
7342 hash->elf.root.u.def.value = sym_value;
7347 /* Determine what (if any) linker stub is needed. */
7348 stub_type = ppc_type_of_stub (section, irela, &hash,
7351 if (stub_type != ppc_stub_plt_call)
7353 /* Check whether we need a TOC adjusting stub.
7354 Since the linker pastes together pieces from
7355 different object files when creating the
7356 _init and _fini functions, it may be that a
7357 call to what looks like a local sym is in
7358 fact a call needing a TOC adjustment. */
7359 if (code_sec != NULL
7360 && code_sec->output_section != NULL
7361 && (htab->stub_group[code_sec->id].toc_off
7362 != htab->stub_group[section->id].toc_off)
7363 && code_sec->has_gp_reloc
7364 && section->has_gp_reloc)
7365 stub_type = ppc_stub_long_branch_r2off;
7368 if (stub_type == ppc_stub_none)
7371 /* __tls_get_addr calls might be eliminated. */
7372 if (stub_type != ppc_stub_plt_call
7374 && (hash == htab->tls_get_addr
7375 || hash == htab->tls_get_addr_fd)
7376 && section->has_tls_reloc
7377 && irela != internal_relocs)
7382 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
7383 irela - 1, input_bfd))
7384 goto error_ret_free_internal;
7389 /* Support for grouping stub sections. */
7390 id_sec = htab->stub_group[section->id].link_sec;
7392 /* Get the name of this stub. */
7393 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
7395 goto error_ret_free_internal;
7397 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
7398 stub_name, FALSE, FALSE);
7399 if (stub_entry != NULL)
7401 /* The proper stub has already been created. */
7406 stub_entry = ppc_add_stub (stub_name, section, htab);
7407 if (stub_entry == NULL)
7410 error_ret_free_internal:
7411 if (elf_section_data (section)->relocs == NULL)
7412 free (internal_relocs);
7413 error_ret_free_local:
7414 if (local_syms != NULL
7415 && (symtab_hdr->contents
7416 != (unsigned char *) local_syms))
7421 stub_entry->stub_type = stub_type;
7422 stub_entry->target_value = sym_value;
7423 stub_entry->target_section = code_sec;
7424 stub_entry->h = hash;
7425 stub_entry->addend = irela->r_addend;
7426 stub_changed = TRUE;
7429 /* We're done with the internal relocs, free them. */
7430 if (elf_section_data (section)->relocs != internal_relocs)
7431 free (internal_relocs);
7434 if (local_syms != NULL
7435 && symtab_hdr->contents != (unsigned char *) local_syms)
7437 if (!info->keep_memory)
7440 symtab_hdr->contents = (unsigned char *) local_syms;
7447 /* OK, we've added some stubs. Find out the new size of the
7449 for (stub_sec = htab->stub_bfd->sections;
7451 stub_sec = stub_sec->next)
7452 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7455 htab->brlt->size = 0;
7457 htab->relbrlt->size = 0;
7459 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
7461 /* Ask the linker to do its stuff. */
7462 (*htab->layout_sections_again) ();
7465 /* It would be nice to strip .branch_lt from the output if the
7466 section is empty, but it's too late. If we strip sections here,
7467 the dynamic symbol table is corrupted since the section symbol
7468 for the stripped section isn't written. */
7473 /* Called after we have determined section placement. If sections
7474 move, we'll be called again. Provide a value for TOCstart. */
7477 ppc64_elf_toc (bfd *obfd)
7482 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
7483 order. The TOC starts where the first of these sections starts. */
7484 s = bfd_get_section_by_name (obfd, ".got");
7486 s = bfd_get_section_by_name (obfd, ".toc");
7488 s = bfd_get_section_by_name (obfd, ".tocbss");
7490 s = bfd_get_section_by_name (obfd, ".plt");
7493 /* This may happen for
7494 o references to TOC base (SYM@toc / TOC[tc0]) without a
7497 o --gc-sections and empty TOC sections
7499 FIXME: Warn user? */
7501 /* Look for a likely section. We probably won't even be
7503 for (s = obfd->sections; s != NULL; s = s->next)
7504 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
7505 == (SEC_ALLOC | SEC_SMALL_DATA))
7508 for (s = obfd->sections; s != NULL; s = s->next)
7509 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
7510 == (SEC_ALLOC | SEC_SMALL_DATA))
7513 for (s = obfd->sections; s != NULL; s = s->next)
7514 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
7517 for (s = obfd->sections; s != NULL; s = s->next)
7518 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
7524 TOCstart = s->output_section->vma + s->output_offset;
7529 /* Build all the stubs associated with the current output file.
7530 The stubs are kept in a hash table attached to the main linker
7531 hash table. This function is called via gldelf64ppc_finish. */
7534 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
7535 struct bfd_link_info *info,
7538 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7541 int stub_sec_count = 0;
7543 htab->emit_stub_syms = emit_stub_syms;
7545 /* Allocate memory to hold the linker stubs. */
7546 for (stub_sec = htab->stub_bfd->sections;
7548 stub_sec = stub_sec->next)
7549 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
7550 && stub_sec->size != 0)
7552 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
7553 if (stub_sec->contents == NULL)
7555 /* We want to check that built size is the same as calculated
7556 size. rawsize is a convenient location to use. */
7557 stub_sec->rawsize = stub_sec->size;
7561 if (htab->plt != NULL)
7566 /* Build the .glink plt call stub. */
7567 plt0 = (htab->plt->output_section->vma
7568 + htab->plt->output_offset
7569 - (htab->glink->output_section->vma
7570 + htab->glink->output_offset
7571 + GLINK_CALL_STUB_SIZE));
7572 if (plt0 + 0x80008000 > 0xffffffff)
7574 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
7575 bfd_set_error (bfd_error_bad_value);
7579 if (htab->emit_stub_syms)
7581 struct elf_link_hash_entry *h;
7582 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
7585 if (h->root.type == bfd_link_hash_new)
7587 h->root.type = bfd_link_hash_defined;
7588 h->root.u.def.section = htab->glink;
7589 h->root.u.def.value = 0;
7590 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
7591 | ELF_LINK_HASH_DEF_REGULAR
7592 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7593 | ELF_LINK_FORCED_LOCAL);
7596 p = htab->glink->contents;
7597 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
7599 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
7601 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
7603 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
7605 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
7607 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
7609 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
7611 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
7613 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
7615 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
7617 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
7619 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
7621 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
7623 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
7625 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
7627 bfd_put_32 (htab->glink->owner, BCTR, p);
7630 /* Build the .glink lazy link call stubs. */
7632 while (p < htab->glink->contents + htab->glink->size)
7636 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
7641 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
7643 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
7646 bfd_put_32 (htab->glink->owner,
7647 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
7651 htab->glink->rawsize = p - htab->glink->contents;
7654 if (htab->brlt->size != 0)
7656 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
7658 if (htab->brlt->contents == NULL)
7661 if (info->shared && htab->relbrlt->size != 0)
7663 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
7664 htab->relbrlt->size);
7665 if (htab->relbrlt->contents == NULL)
7669 /* Build the stubs as directed by the stub hash table. */
7670 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
7672 for (stub_sec = htab->stub_bfd->sections;
7674 stub_sec = stub_sec->next)
7675 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7677 stub_sec_count += 1;
7678 if (stub_sec->rawsize != stub_sec->size)
7682 if (stub_sec != NULL
7683 || htab->glink->rawsize != htab->glink->size)
7685 htab->stub_error = TRUE;
7686 (*_bfd_error_handler) (_("stubs don't match calculated size"));
7689 if (htab->stub_error)
7694 *stats = bfd_malloc (500);
7698 sprintf (*stats, _("linker stubs in %u groups\n"
7701 " long branch %lu\n"
7702 " long toc adj %lu\n"
7705 htab->stub_count[ppc_stub_long_branch - 1],
7706 htab->stub_count[ppc_stub_long_branch_r2off - 1],
7707 htab->stub_count[ppc_stub_plt_branch - 1],
7708 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
7709 htab->stub_count[ppc_stub_plt_call - 1]);
7714 /* This function undoes the changes made by add_symbol_adjust. */
7717 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7719 struct ppc_link_hash_entry *eh;
7721 if (h->root.type == bfd_link_hash_indirect)
7724 if (h->root.type == bfd_link_hash_warning)
7725 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7727 eh = (struct ppc_link_hash_entry *) h;
7728 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
7731 eh->elf.root.type = bfd_link_hash_undefined;
7736 ppc64_elf_restore_symbols (struct bfd_link_info *info)
7738 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7739 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
7742 /* The RELOCATE_SECTION function is called by the ELF backend linker
7743 to handle the relocations for a section.
7745 The relocs are always passed as Rela structures; if the section
7746 actually uses Rel structures, the r_addend field will always be
7749 This function is responsible for adjust the section contents as
7750 necessary, and (if using Rela relocs and generating a
7751 relocatable output file) adjusting the reloc addend as
7754 This function does not have to worry about setting the reloc
7755 address or the reloc symbol index.
7757 LOCAL_SYMS is a pointer to the swapped in local symbols.
7759 LOCAL_SECTIONS is an array giving the section in the input file
7760 corresponding to the st_shndx field of each local symbol.
7762 The global hash table entry for the global symbols can be found
7763 via elf_sym_hashes (input_bfd).
7765 When generating relocatable output, this function must handle
7766 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7767 going to be the section symbol corresponding to the output
7768 section, which means that the addend must be adjusted
7772 ppc64_elf_relocate_section (bfd *output_bfd,
7773 struct bfd_link_info *info,
7775 asection *input_section,
7777 Elf_Internal_Rela *relocs,
7778 Elf_Internal_Sym *local_syms,
7779 asection **local_sections)
7781 struct ppc_link_hash_table *htab;
7782 Elf_Internal_Shdr *symtab_hdr;
7783 struct elf_link_hash_entry **sym_hashes;
7784 Elf_Internal_Rela *rel;
7785 Elf_Internal_Rela *relend;
7786 Elf_Internal_Rela outrel;
7788 struct got_entry **local_got_ents;
7790 bfd_boolean ret = TRUE;
7792 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
7793 bfd_boolean is_power4 = FALSE;
7795 if (info->relocatable)
7798 /* Initialize howto table if needed. */
7799 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
7802 htab = ppc_hash_table (info);
7803 local_got_ents = elf_local_got_ents (input_bfd);
7804 TOCstart = elf_gp (output_bfd);
7805 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
7806 sym_hashes = elf_sym_hashes (input_bfd);
7807 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
7810 relend = relocs + input_section->reloc_count;
7811 for (; rel < relend; rel++)
7813 enum elf_ppc64_reloc_type r_type;
7815 bfd_reloc_status_type r;
7816 Elf_Internal_Sym *sym;
7818 struct elf_link_hash_entry *h;
7819 struct elf_link_hash_entry *fdh;
7820 const char *sym_name;
7821 unsigned long r_symndx, toc_symndx;
7822 char tls_mask, tls_gd, tls_type;
7825 bfd_boolean unresolved_reloc;
7827 unsigned long insn, mask;
7828 struct ppc_stub_hash_entry *stub_entry;
7829 bfd_vma max_br_offset;
7832 r_type = ELF64_R_TYPE (rel->r_info);
7833 r_symndx = ELF64_R_SYM (rel->r_info);
7835 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
7836 symbol of the previous ADDR64 reloc. The symbol gives us the
7837 proper TOC base to use. */
7838 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
7840 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
7842 r_symndx = ELF64_R_SYM (rel[-1].r_info);
7848 unresolved_reloc = FALSE;
7851 if (r_symndx < symtab_hdr->sh_info)
7853 /* It's a local symbol. */
7856 sym = local_syms + r_symndx;
7857 sec = local_sections[r_symndx];
7858 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
7859 sym_type = ELF64_ST_TYPE (sym->st_info);
7860 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7861 opd_adjust = get_opd_info (sec);
7862 if (opd_adjust != NULL)
7864 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 24];
7868 relocation += adjust;
7873 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7874 r_symndx, symtab_hdr, sym_hashes,
7876 unresolved_reloc, warned);
7877 sym_name = h->root.root.string;
7881 /* TLS optimizations. Replace instruction sequences and relocs
7882 based on information we collected in tls_optimize. We edit
7883 RELOCS so that --emit-relocs will output something sensible
7884 for the final instruction stream. */
7888 if (IS_PPC64_TLS_RELOC (r_type))
7891 tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask;
7892 else if (local_got_ents != NULL)
7895 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
7896 tls_mask = lgot_masks[r_symndx];
7898 if (tls_mask == 0 && r_type == R_PPC64_TLS)
7900 /* Check for toc tls entries. */
7903 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7908 tls_mask = *toc_tls;
7912 /* Check that tls relocs are used with tls syms, and non-tls
7913 relocs are used with non-tls syms. */
7915 && r_type != R_PPC64_NONE
7917 || h->root.type == bfd_link_hash_defined
7918 || h->root.type == bfd_link_hash_defweak)
7919 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7921 if (r_type == R_PPC64_TLS && tls_mask != 0)
7922 /* R_PPC64_TLS is OK against a symbol in the TOC. */
7925 (*_bfd_error_handler)
7926 (sym_type == STT_TLS
7927 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
7928 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
7931 (long) rel->r_offset,
7932 ppc64_elf_howto_table[r_type]->name,
7936 /* Ensure reloc mapping code below stays sane. */
7937 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
7938 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
7939 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
7940 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
7941 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
7942 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
7943 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
7944 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
7945 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
7946 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
7955 case R_PPC64_TOC16_LO:
7956 case R_PPC64_TOC16_DS:
7957 case R_PPC64_TOC16_LO_DS:
7959 /* Check for toc tls entries. */
7963 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7970 tls_mask = *toc_tls;
7971 if (r_type == R_PPC64_TOC16_DS
7972 || r_type == R_PPC64_TOC16_LO_DS)
7975 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
7980 /* If we found a GD reloc pair, then we might be
7981 doing a GD->IE transition. */
7984 tls_gd = TLS_TPRELGD;
7985 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7986 goto tls_get_addr_check;
7988 else if (retval == 3)
7990 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7991 goto tls_get_addr_check;
7998 case R_PPC64_GOT_TPREL16_DS:
7999 case R_PPC64_GOT_TPREL16_LO_DS:
8001 && (tls_mask & TLS_TPREL) == 0)
8004 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
8006 insn |= 0x3c0d0000; /* addis 0,13,0 */
8007 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
8008 r_type = R_PPC64_TPREL16_HA;
8009 if (toc_symndx != 0)
8011 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
8012 /* We changed the symbol. Start over in order to
8013 get h, sym, sec etc. right. */
8018 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8024 && (tls_mask & TLS_TPREL) == 0)
8027 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
8028 if ((insn & ((0x3f << 26) | (31 << 11)))
8029 == ((31 << 26) | (13 << 11)))
8030 rtra = insn & ((1 << 26) - (1 << 16));
8031 else if ((insn & ((0x3f << 26) | (31 << 16)))
8032 == ((31 << 26) | (13 << 16)))
8033 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
8036 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
8039 else if ((insn & (31 << 1)) == 23 << 1
8040 && ((insn & (31 << 6)) < 14 << 6
8041 || ((insn & (31 << 6)) >= 16 << 6
8042 && (insn & (31 << 6)) < 24 << 6)))
8043 /* load and store indexed -> dform. */
8044 insn = (32 | ((insn >> 6) & 31)) << 26;
8045 else if ((insn & (31 << 1)) == 21 << 1
8046 && (insn & (0x1a << 6)) == 0)
8047 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
8048 insn = (((58 | ((insn >> 6) & 4)) << 26)
8049 | ((insn >> 6) & 1));
8050 else if ((insn & (31 << 1)) == 21 << 1
8051 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
8053 insn = (58 << 26) | 2;
8057 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8058 /* Was PPC64_TLS which sits on insn boundary, now
8059 PPC64_TPREL16_LO which is at insn+2. */
8061 r_type = R_PPC64_TPREL16_LO;
8062 if (toc_symndx != 0)
8064 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
8065 /* We changed the symbol. Start over in order to
8066 get h, sym, sec etc. right. */
8071 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8075 case R_PPC64_GOT_TLSGD16_HI:
8076 case R_PPC64_GOT_TLSGD16_HA:
8077 tls_gd = TLS_TPRELGD;
8078 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
8082 case R_PPC64_GOT_TLSLD16_HI:
8083 case R_PPC64_GOT_TLSLD16_HA:
8084 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
8087 if ((tls_mask & tls_gd) != 0)
8088 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
8089 + R_PPC64_GOT_TPREL16_DS);
8092 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
8094 r_type = R_PPC64_NONE;
8096 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8100 case R_PPC64_GOT_TLSGD16:
8101 case R_PPC64_GOT_TLSGD16_LO:
8102 tls_gd = TLS_TPRELGD;
8103 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
8104 goto tls_get_addr_check;
8107 case R_PPC64_GOT_TLSLD16:
8108 case R_PPC64_GOT_TLSLD16_LO:
8109 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
8112 if (rel + 1 < relend)
8114 enum elf_ppc64_reloc_type r_type2;
8115 unsigned long r_symndx2;
8116 struct elf_link_hash_entry *h2;
8117 bfd_vma insn1, insn2, insn3;
8120 /* The next instruction should be a call to
8121 __tls_get_addr. Peek at the reloc to be sure. */
8122 r_type2 = ELF64_R_TYPE (rel[1].r_info);
8123 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
8124 if (r_symndx2 < symtab_hdr->sh_info
8125 || (r_type2 != R_PPC64_REL14
8126 && r_type2 != R_PPC64_REL14_BRTAKEN
8127 && r_type2 != R_PPC64_REL14_BRNTAKEN
8128 && r_type2 != R_PPC64_REL24))
8131 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
8132 while (h2->root.type == bfd_link_hash_indirect
8133 || h2->root.type == bfd_link_hash_warning)
8134 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8135 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
8136 && h2 != &htab->tls_get_addr_fd->elf))
8139 /* OK, it checks out. Replace the call. */
8140 offset = rel[1].r_offset;
8141 insn1 = bfd_get_32 (output_bfd,
8142 contents + rel->r_offset - 2);
8143 insn3 = bfd_get_32 (output_bfd,
8144 contents + offset + 4);
8145 if ((tls_mask & tls_gd) != 0)
8148 insn1 &= (1 << 26) - (1 << 2);
8149 insn1 |= 58 << 26; /* ld */
8150 insn2 = 0x7c636a14; /* add 3,3,13 */
8151 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
8152 if ((tls_mask & TLS_EXPLICIT) == 0)
8153 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
8154 + R_PPC64_GOT_TPREL16_DS);
8156 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
8157 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8162 insn1 = 0x3c6d0000; /* addis 3,13,0 */
8163 insn2 = 0x38630000; /* addi 3,3,0 */
8166 /* Was an LD reloc. */
8168 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8169 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
8171 else if (toc_symndx != 0)
8172 r_symndx = toc_symndx;
8173 r_type = R_PPC64_TPREL16_HA;
8174 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8175 rel[1].r_info = ELF64_R_INFO (r_symndx,
8176 R_PPC64_TPREL16_LO);
8177 rel[1].r_offset += 2;
8180 || insn3 == CROR_151515 || insn3 == CROR_313131)
8184 rel[1].r_offset += 4;
8186 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
8187 bfd_put_32 (output_bfd, insn2, contents + offset);
8188 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
8189 if (tls_gd == 0 || toc_symndx != 0)
8191 /* We changed the symbol. Start over in order
8192 to get h, sym, sec etc. right. */
8200 case R_PPC64_DTPMOD64:
8201 if (rel + 1 < relend
8202 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
8203 && rel[1].r_offset == rel->r_offset + 8)
8205 if ((tls_mask & TLS_GD) == 0)
8207 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
8208 if ((tls_mask & TLS_TPRELGD) != 0)
8209 r_type = R_PPC64_TPREL64;
8212 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
8213 r_type = R_PPC64_NONE;
8215 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8220 if ((tls_mask & TLS_LD) == 0)
8222 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
8223 r_type = R_PPC64_NONE;
8224 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8229 case R_PPC64_TPREL64:
8230 if ((tls_mask & TLS_TPREL) == 0)
8232 r_type = R_PPC64_NONE;
8233 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
8238 /* Handle other relocations that tweak non-addend part of insn. */
8240 max_br_offset = 1 << 25;
8241 addend = rel->r_addend;
8247 /* Branch taken prediction relocations. */
8248 case R_PPC64_ADDR14_BRTAKEN:
8249 case R_PPC64_REL14_BRTAKEN:
8250 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
8253 /* Branch not taken prediction relocations. */
8254 case R_PPC64_ADDR14_BRNTAKEN:
8255 case R_PPC64_REL14_BRNTAKEN:
8256 insn |= bfd_get_32 (output_bfd,
8257 contents + rel->r_offset) & ~(0x01 << 21);
8261 max_br_offset = 1 << 15;
8265 /* Calls to functions with a different TOC, such as calls to
8266 shared objects, need to alter the TOC pointer. This is
8267 done using a linkage stub. A REL24 branching to these
8268 linkage stubs needs to be followed by a nop, as the nop
8269 will be replaced with an instruction to restore the TOC
8274 && (((fdh = &((struct ppc_link_hash_entry *) h)->oh->elf) != NULL
8275 && fdh->plt.plist != NULL)
8276 || (fdh = h)->plt.plist != NULL))
8278 && sec->output_section != NULL
8279 && sec->id <= htab->top_id
8280 && (htab->stub_group[sec->id].toc_off
8281 != htab->stub_group[input_section->id].toc_off)))
8282 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
8284 && (stub_entry->stub_type == ppc_stub_plt_call
8285 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
8286 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8288 bfd_boolean can_plt_call = FALSE;
8290 if (rel->r_offset + 8 <= input_section->size)
8293 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
8295 || nop == CROR_151515 || nop == CROR_313131)
8297 bfd_put_32 (input_bfd, LD_R2_40R1,
8298 contents + rel->r_offset + 4);
8299 can_plt_call = TRUE;
8305 if (stub_entry->stub_type == ppc_stub_plt_call)
8307 /* If this is a plain branch rather than a branch
8308 and link, don't require a nop. */
8310 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
8312 can_plt_call = TRUE;
8315 && strcmp (h->root.root.string,
8316 ".__libc_start_main") == 0)
8318 /* Allow crt1 branch to go via a toc adjusting stub. */
8319 can_plt_call = TRUE;
8323 if (strcmp (input_section->output_section->name,
8325 || strcmp (input_section->output_section->name,
8327 (*_bfd_error_handler)
8328 (_("%B(%A+0x%lx): automatic multiple TOCs "
8329 "not supported using your crt files; "
8330 "recompile with -mminimal-toc or upgrade gcc"),
8333 (long) rel->r_offset);
8335 (*_bfd_error_handler)
8336 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
8337 "does not allow automatic multiple TOCs; "
8338 "recompile with -mminimal-toc or "
8339 "-fno-optimize-sibling-calls, "
8340 "or make `%s' extern"),
8343 (long) rel->r_offset,
8346 bfd_set_error (bfd_error_bad_value);
8352 && stub_entry->stub_type == ppc_stub_plt_call)
8353 unresolved_reloc = FALSE;
8356 if (stub_entry == NULL
8357 && get_opd_info (sec) != NULL)
8359 /* The branch destination is the value of the opd entry. */
8360 bfd_vma off = (relocation - sec->output_section->vma
8361 - sec->output_offset + rel->r_addend);
8362 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
8363 if (dest != (bfd_vma) -1)
8370 /* If the branch is out of reach we ought to have a long
8372 from = (rel->r_offset
8373 + input_section->output_offset
8374 + input_section->output_section->vma);
8376 if (stub_entry == NULL
8377 && (relocation + rel->r_addend - from + max_br_offset
8378 >= 2 * max_br_offset)
8379 && r_type != R_PPC64_ADDR14_BRTAKEN
8380 && r_type != R_PPC64_ADDR14_BRNTAKEN)
8381 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, htab);
8383 if (stub_entry != NULL)
8385 /* Munge up the value and addend so that we call the stub
8386 rather than the procedure directly. */
8387 relocation = (stub_entry->stub_offset
8388 + stub_entry->stub_sec->output_offset
8389 + stub_entry->stub_sec->output_section->vma);
8397 /* Set 'a' bit. This is 0b00010 in BO field for branch
8398 on CR(BI) insns (BO == 001at or 011at), and 0b01000
8399 for branch on CTR insns (BO == 1a00t or 1a01t). */
8400 if ((insn & (0x14 << 21)) == (0x04 << 21))
8402 else if ((insn & (0x14 << 21)) == (0x10 << 21))
8409 /* Invert 'y' bit if not the default. */
8410 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8414 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8417 /* NOP out calls to undefined weak functions.
8418 We can thus call a weak function without first
8419 checking whether the function is defined. */
8421 && h->root.type == bfd_link_hash_undefweak
8422 && r_type == R_PPC64_REL24
8424 && rel->r_addend == 0)
8426 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
8437 (*_bfd_error_handler)
8438 (_("%B: unknown relocation type %d for symbol %s"),
8439 input_bfd, (int) r_type, sym_name);
8441 bfd_set_error (bfd_error_bad_value);
8447 case R_PPC64_GNU_VTINHERIT:
8448 case R_PPC64_GNU_VTENTRY:
8451 /* GOT16 relocations. Like an ADDR16 using the symbol's
8452 address in the GOT as relocation value instead of the
8453 symbol's value itself. Also, create a GOT entry for the
8454 symbol and put the symbol value there. */
8455 case R_PPC64_GOT_TLSGD16:
8456 case R_PPC64_GOT_TLSGD16_LO:
8457 case R_PPC64_GOT_TLSGD16_HI:
8458 case R_PPC64_GOT_TLSGD16_HA:
8459 tls_type = TLS_TLS | TLS_GD;
8462 case R_PPC64_GOT_TLSLD16:
8463 case R_PPC64_GOT_TLSLD16_LO:
8464 case R_PPC64_GOT_TLSLD16_HI:
8465 case R_PPC64_GOT_TLSLD16_HA:
8466 tls_type = TLS_TLS | TLS_LD;
8469 case R_PPC64_GOT_TPREL16_DS:
8470 case R_PPC64_GOT_TPREL16_LO_DS:
8471 case R_PPC64_GOT_TPREL16_HI:
8472 case R_PPC64_GOT_TPREL16_HA:
8473 tls_type = TLS_TLS | TLS_TPREL;
8476 case R_PPC64_GOT_DTPREL16_DS:
8477 case R_PPC64_GOT_DTPREL16_LO_DS:
8478 case R_PPC64_GOT_DTPREL16_HI:
8479 case R_PPC64_GOT_DTPREL16_HA:
8480 tls_type = TLS_TLS | TLS_DTPREL;
8484 case R_PPC64_GOT16_LO:
8485 case R_PPC64_GOT16_HI:
8486 case R_PPC64_GOT16_HA:
8487 case R_PPC64_GOT16_DS:
8488 case R_PPC64_GOT16_LO_DS:
8491 /* Relocation is to the entry for this symbol in the global
8496 unsigned long indx = 0;
8498 if (tls_type == (TLS_TLS | TLS_LD)
8500 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
8501 offp = &ppc64_tlsld_got (input_bfd)->offset;
8504 struct got_entry *ent;
8508 bfd_boolean dyn = htab->elf.dynamic_sections_created;
8509 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8511 && SYMBOL_REFERENCES_LOCAL (info, h)))
8512 /* This is actually a static link, or it is a
8513 -Bsymbolic link and the symbol is defined
8514 locally, or the symbol was forced to be local
8515 because of a version file. */
8520 unresolved_reloc = FALSE;
8526 if (local_got_ents == NULL)
8528 ent = local_got_ents[r_symndx];
8531 for (; ent != NULL; ent = ent->next)
8532 if (ent->addend == rel->r_addend
8533 && ent->owner == input_bfd
8534 && ent->tls_type == tls_type)
8538 offp = &ent->got.offset;
8541 got = ppc64_elf_tdata (input_bfd)->got;
8545 /* The offset must always be a multiple of 8. We use the
8546 least significant bit to record whether we have already
8547 processed this entry. */
8553 /* Generate relocs for the dynamic linker, except in
8554 the case of TLSLD where we'll use one entry per
8556 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
8559 if ((info->shared || indx != 0)
8561 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8562 || h->root.type != bfd_link_hash_undefweak))
8564 outrel.r_offset = (got->output_section->vma
8565 + got->output_offset
8567 outrel.r_addend = rel->r_addend;
8568 if (tls_type & (TLS_LD | TLS_GD))
8570 outrel.r_addend = 0;
8571 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
8572 if (tls_type == (TLS_TLS | TLS_GD))
8574 loc = relgot->contents;
8575 loc += (relgot->reloc_count++
8576 * sizeof (Elf64_External_Rela));
8577 bfd_elf64_swap_reloca_out (output_bfd,
8579 outrel.r_offset += 8;
8580 outrel.r_addend = rel->r_addend;
8582 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
8585 else if (tls_type == (TLS_TLS | TLS_DTPREL))
8586 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
8587 else if (tls_type == (TLS_TLS | TLS_TPREL))
8588 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
8591 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
8593 /* Write the .got section contents for the sake
8595 loc = got->contents + off;
8596 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
8600 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
8602 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
8604 outrel.r_addend += relocation;
8605 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8606 outrel.r_addend -= htab->elf.tls_sec->vma;
8608 loc = relgot->contents;
8609 loc += (relgot->reloc_count++
8610 * sizeof (Elf64_External_Rela));
8611 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8614 /* Init the .got section contents here if we're not
8615 emitting a reloc. */
8618 relocation += rel->r_addend;
8619 if (tls_type == (TLS_TLS | TLS_LD))
8621 else if (tls_type != 0)
8623 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
8624 if (tls_type == (TLS_TLS | TLS_TPREL))
8625 relocation += DTP_OFFSET - TP_OFFSET;
8627 if (tls_type == (TLS_TLS | TLS_GD))
8629 bfd_put_64 (output_bfd, relocation,
8630 got->contents + off + 8);
8635 bfd_put_64 (output_bfd, relocation,
8636 got->contents + off);
8640 if (off >= (bfd_vma) -2)
8643 relocation = got->output_offset + off;
8645 /* TOC base (r2) is TOC start plus 0x8000. */
8646 addend = -TOC_BASE_OFF;
8650 case R_PPC64_PLT16_HA:
8651 case R_PPC64_PLT16_HI:
8652 case R_PPC64_PLT16_LO:
8655 /* Relocation is to the entry for this symbol in the
8656 procedure linkage table. */
8658 /* Resolve a PLT reloc against a local symbol directly,
8659 without using the procedure linkage table. */
8663 /* It's possible that we didn't make a PLT entry for this
8664 symbol. This happens when statically linking PIC code,
8665 or when using -Bsymbolic. Go find a match if there is a
8667 if (htab->plt != NULL)
8669 struct plt_entry *ent;
8670 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8671 if (ent->addend == rel->r_addend
8672 && ent->plt.offset != (bfd_vma) -1)
8674 relocation = (htab->plt->output_section->vma
8675 + htab->plt->output_offset
8677 unresolved_reloc = FALSE;
8683 /* Relocation value is TOC base. */
8684 relocation = TOCstart;
8686 relocation += htab->stub_group[input_section->id].toc_off;
8687 else if (unresolved_reloc)
8689 else if (sec != NULL && sec->id <= htab->top_id)
8690 relocation += htab->stub_group[sec->id].toc_off;
8692 unresolved_reloc = TRUE;
8695 /* TOC16 relocs. We want the offset relative to the TOC base,
8696 which is the address of the start of the TOC plus 0x8000.
8697 The TOC consists of sections .got, .toc, .tocbss, and .plt,
8700 case R_PPC64_TOC16_LO:
8701 case R_PPC64_TOC16_HI:
8702 case R_PPC64_TOC16_DS:
8703 case R_PPC64_TOC16_LO_DS:
8704 case R_PPC64_TOC16_HA:
8705 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
8708 /* Relocate against the beginning of the section. */
8709 case R_PPC64_SECTOFF:
8710 case R_PPC64_SECTOFF_LO:
8711 case R_PPC64_SECTOFF_HI:
8712 case R_PPC64_SECTOFF_DS:
8713 case R_PPC64_SECTOFF_LO_DS:
8714 case R_PPC64_SECTOFF_HA:
8716 addend -= sec->output_section->vma;
8720 case R_PPC64_REL14_BRNTAKEN:
8721 case R_PPC64_REL14_BRTAKEN:
8725 case R_PPC64_TPREL16:
8726 case R_PPC64_TPREL16_LO:
8727 case R_PPC64_TPREL16_HI:
8728 case R_PPC64_TPREL16_HA:
8729 case R_PPC64_TPREL16_DS:
8730 case R_PPC64_TPREL16_LO_DS:
8731 case R_PPC64_TPREL16_HIGHER:
8732 case R_PPC64_TPREL16_HIGHERA:
8733 case R_PPC64_TPREL16_HIGHEST:
8734 case R_PPC64_TPREL16_HIGHESTA:
8735 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8737 /* The TPREL16 relocs shouldn't really be used in shared
8738 libs as they will result in DT_TEXTREL being set, but
8739 support them anyway. */
8743 case R_PPC64_DTPREL16:
8744 case R_PPC64_DTPREL16_LO:
8745 case R_PPC64_DTPREL16_HI:
8746 case R_PPC64_DTPREL16_HA:
8747 case R_PPC64_DTPREL16_DS:
8748 case R_PPC64_DTPREL16_LO_DS:
8749 case R_PPC64_DTPREL16_HIGHER:
8750 case R_PPC64_DTPREL16_HIGHERA:
8751 case R_PPC64_DTPREL16_HIGHEST:
8752 case R_PPC64_DTPREL16_HIGHESTA:
8753 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8756 case R_PPC64_DTPMOD64:
8761 case R_PPC64_TPREL64:
8762 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8765 case R_PPC64_DTPREL64:
8766 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8769 /* Relocations that may need to be propagated if this is a
8774 case R_PPC64_ADDR14:
8775 case R_PPC64_ADDR14_BRNTAKEN:
8776 case R_PPC64_ADDR14_BRTAKEN:
8777 case R_PPC64_ADDR16:
8778 case R_PPC64_ADDR16_DS:
8779 case R_PPC64_ADDR16_HA:
8780 case R_PPC64_ADDR16_HI:
8781 case R_PPC64_ADDR16_HIGHER:
8782 case R_PPC64_ADDR16_HIGHERA:
8783 case R_PPC64_ADDR16_HIGHEST:
8784 case R_PPC64_ADDR16_HIGHESTA:
8785 case R_PPC64_ADDR16_LO:
8786 case R_PPC64_ADDR16_LO_DS:
8787 case R_PPC64_ADDR24:
8788 case R_PPC64_ADDR32:
8789 case R_PPC64_ADDR64:
8790 case R_PPC64_UADDR16:
8791 case R_PPC64_UADDR32:
8792 case R_PPC64_UADDR64:
8793 /* r_symndx will be zero only for relocs against symbols
8794 from removed linkonce sections, or sections discarded by
8802 if ((input_section->flags & SEC_ALLOC) == 0)
8805 if (NO_OPD_RELOCS && is_opd)
8810 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8811 || h->root.type != bfd_link_hash_undefweak)
8812 && (MUST_BE_DYN_RELOC (r_type)
8813 || !SYMBOL_CALLS_LOCAL (info, h)))
8814 || (ELIMINATE_COPY_RELOCS
8818 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
8819 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
8820 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
8822 Elf_Internal_Rela outrel;
8823 bfd_boolean skip, relocate;
8828 /* When generating a dynamic object, these relocations
8829 are copied into the output file to be resolved at run
8835 out_off = _bfd_elf_section_offset (output_bfd, info,
8836 input_section, rel->r_offset);
8837 if (out_off == (bfd_vma) -1)
8839 else if (out_off == (bfd_vma) -2)
8840 skip = TRUE, relocate = TRUE;
8841 out_off += (input_section->output_section->vma
8842 + input_section->output_offset);
8843 outrel.r_offset = out_off;
8844 outrel.r_addend = rel->r_addend;
8846 /* Optimize unaligned reloc use. */
8847 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
8848 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
8849 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
8850 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
8851 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
8852 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
8853 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
8854 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
8855 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
8858 memset (&outrel, 0, sizeof outrel);
8859 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
8861 && r_type != R_PPC64_TOC)
8862 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
8865 /* This symbol is local, or marked to become local,
8866 or this is an opd section reloc which must point
8867 at a local function. */
8868 outrel.r_addend += relocation;
8869 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
8871 if (is_opd && h != NULL)
8873 /* Lie about opd entries. This case occurs
8874 when building shared libraries and we
8875 reference a function in another shared
8876 lib. The same thing happens for a weak
8877 definition in an application that's
8878 overridden by a strong definition in a
8879 shared lib. (I believe this is a generic
8880 bug in binutils handling of weak syms.)
8881 In these cases we won't use the opd
8882 entry in this lib. */
8883 unresolved_reloc = FALSE;
8885 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8887 /* We need to relocate .opd contents for ld.so.
8888 Prelink also wants simple and consistent rules
8889 for relocs. This make all RELATIVE relocs have
8890 *r_offset equal to r_addend. */
8897 if (bfd_is_abs_section (sec))
8899 else if (sec == NULL || sec->owner == NULL)
8901 bfd_set_error (bfd_error_bad_value);
8908 osec = sec->output_section;
8909 indx = elf_section_data (osec)->dynindx;
8911 /* We are turning this relocation into one
8912 against a section symbol, so subtract out
8913 the output section's address but not the
8914 offset of the input section in the output
8916 outrel.r_addend -= osec->vma;
8919 outrel.r_info = ELF64_R_INFO (indx, r_type);
8923 sreloc = elf_section_data (input_section)->sreloc;
8927 loc = sreloc->contents;
8928 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
8929 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8931 /* If this reloc is against an external symbol, it will
8932 be computed at runtime, so there's no need to do
8933 anything now. However, for the sake of prelink ensure
8934 that the section contents are a known value. */
8937 unresolved_reloc = FALSE;
8938 /* The value chosen here is quite arbitrary as ld.so
8939 ignores section contents except for the special
8940 case of .opd where the contents might be accessed
8941 before relocation. Choose zero, as that won't
8942 cause reloc overflow. */
8945 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
8946 to improve backward compatibility with older
8948 if (r_type == R_PPC64_ADDR64)
8949 addend = outrel.r_addend;
8950 /* Adjust pc_relative relocs to have zero in *r_offset. */
8951 else if (ppc64_elf_howto_table[r_type]->pc_relative)
8952 addend = (input_section->output_section->vma
8953 + input_section->output_offset
8960 case R_PPC64_GLOB_DAT:
8961 case R_PPC64_JMP_SLOT:
8962 case R_PPC64_RELATIVE:
8963 /* We shouldn't ever see these dynamic relocs in relocatable
8967 case R_PPC64_PLTGOT16:
8968 case R_PPC64_PLTGOT16_DS:
8969 case R_PPC64_PLTGOT16_HA:
8970 case R_PPC64_PLTGOT16_HI:
8971 case R_PPC64_PLTGOT16_LO:
8972 case R_PPC64_PLTGOT16_LO_DS:
8973 case R_PPC64_PLTREL32:
8974 case R_PPC64_PLTREL64:
8975 /* These ones haven't been implemented yet. */
8977 (*_bfd_error_handler)
8978 (_("%B: relocation %s is not supported for symbol %s."),
8980 ppc64_elf_howto_table[r_type]->name, sym_name);
8982 bfd_set_error (bfd_error_invalid_operation);
8987 /* Do any further special processing. */
8993 case R_PPC64_ADDR16_HA:
8994 case R_PPC64_ADDR16_HIGHERA:
8995 case R_PPC64_ADDR16_HIGHESTA:
8996 case R_PPC64_GOT16_HA:
8997 case R_PPC64_PLTGOT16_HA:
8998 case R_PPC64_PLT16_HA:
8999 case R_PPC64_TOC16_HA:
9000 case R_PPC64_SECTOFF_HA:
9001 case R_PPC64_TPREL16_HA:
9002 case R_PPC64_DTPREL16_HA:
9003 case R_PPC64_GOT_TLSGD16_HA:
9004 case R_PPC64_GOT_TLSLD16_HA:
9005 case R_PPC64_GOT_TPREL16_HA:
9006 case R_PPC64_GOT_DTPREL16_HA:
9007 case R_PPC64_TPREL16_HIGHER:
9008 case R_PPC64_TPREL16_HIGHERA:
9009 case R_PPC64_TPREL16_HIGHEST:
9010 case R_PPC64_TPREL16_HIGHESTA:
9011 case R_PPC64_DTPREL16_HIGHER:
9012 case R_PPC64_DTPREL16_HIGHERA:
9013 case R_PPC64_DTPREL16_HIGHEST:
9014 case R_PPC64_DTPREL16_HIGHESTA:
9015 /* It's just possible that this symbol is a weak symbol
9016 that's not actually defined anywhere. In that case,
9017 'sec' would be NULL, and we should leave the symbol
9018 alone (it will be set to zero elsewhere in the link). */
9020 /* Add 0x10000 if sign bit in 0:15 is set.
9021 Bits 0:15 are not used. */
9025 case R_PPC64_ADDR16_DS:
9026 case R_PPC64_ADDR16_LO_DS:
9027 case R_PPC64_GOT16_DS:
9028 case R_PPC64_GOT16_LO_DS:
9029 case R_PPC64_PLT16_LO_DS:
9030 case R_PPC64_SECTOFF_DS:
9031 case R_PPC64_SECTOFF_LO_DS:
9032 case R_PPC64_TOC16_DS:
9033 case R_PPC64_TOC16_LO_DS:
9034 case R_PPC64_PLTGOT16_DS:
9035 case R_PPC64_PLTGOT16_LO_DS:
9036 case R_PPC64_GOT_TPREL16_DS:
9037 case R_PPC64_GOT_TPREL16_LO_DS:
9038 case R_PPC64_GOT_DTPREL16_DS:
9039 case R_PPC64_GOT_DTPREL16_LO_DS:
9040 case R_PPC64_TPREL16_DS:
9041 case R_PPC64_TPREL16_LO_DS:
9042 case R_PPC64_DTPREL16_DS:
9043 case R_PPC64_DTPREL16_LO_DS:
9044 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
9046 /* If this reloc is against an lq insn, then the value must be
9047 a multiple of 16. This is somewhat of a hack, but the
9048 "correct" way to do this by defining _DQ forms of all the
9049 _DS relocs bloats all reloc switches in this file. It
9050 doesn't seem to make much sense to use any of these relocs
9051 in data, so testing the insn should be safe. */
9052 if ((insn & (0x3f << 26)) == (56u << 26))
9054 if (((relocation + addend) & mask) != 0)
9056 (*_bfd_error_handler)
9057 (_("%B: error: relocation %s not a multiple of %d"),
9059 ppc64_elf_howto_table[r_type]->name,
9061 bfd_set_error (bfd_error_bad_value);
9068 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
9069 because such sections are not SEC_ALLOC and thus ld.so will
9070 not process them. */
9071 if (unresolved_reloc
9072 && !((input_section->flags & SEC_DEBUGGING) != 0
9073 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
9075 (*_bfd_error_handler)
9076 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
9079 (long) rel->r_offset,
9080 ppc64_elf_howto_table[(int) r_type]->name,
9081 h->root.root.string);
9085 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
9093 if (r != bfd_reloc_ok)
9095 if (sym_name == NULL)
9096 sym_name = "(null)";
9097 if (r == bfd_reloc_overflow)
9102 && h->root.type == bfd_link_hash_undefweak
9103 && ppc64_elf_howto_table[r_type]->pc_relative)
9105 /* Assume this is a call protected by other code that
9106 detects the symbol is undefined. If this is the case,
9107 we can safely ignore the overflow. If not, the
9108 program is hosed anyway, and a little warning isn't
9114 if (!((*info->callbacks->reloc_overflow)
9115 (info, sym_name, ppc64_elf_howto_table[r_type]->name,
9116 rel->r_addend, input_bfd, input_section, rel->r_offset)))
9121 (*_bfd_error_handler)
9122 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
9125 (long) rel->r_offset,
9126 ppc64_elf_howto_table[r_type]->name,
9137 /* Adjust the value of any local symbols in opd sections. */
9140 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
9141 const char *name ATTRIBUTE_UNUSED,
9142 Elf_Internal_Sym *elfsym,
9143 asection *input_sec,
9144 struct elf_link_hash_entry *h)
9146 long *opd_adjust, adjust;
9152 opd_adjust = get_opd_info (input_sec);
9153 if (opd_adjust == NULL)
9156 value = elfsym->st_value - input_sec->output_offset;
9157 if (!info->relocatable)
9158 value -= input_sec->output_section->vma;
9160 adjust = opd_adjust[value / 24];
9162 elfsym->st_value = 0;
9164 elfsym->st_value += adjust;
9168 /* Finish up dynamic symbol handling. We set the contents of various
9169 dynamic sections here. */
9172 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
9173 struct bfd_link_info *info,
9174 struct elf_link_hash_entry *h,
9175 Elf_Internal_Sym *sym)
9177 struct ppc_link_hash_table *htab;
9179 struct plt_entry *ent;
9180 Elf_Internal_Rela rela;
9183 htab = ppc_hash_table (info);
9184 dynobj = htab->elf.dynobj;
9186 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
9187 if (ent->plt.offset != (bfd_vma) -1)
9189 /* This symbol has an entry in the procedure linkage
9190 table. Set it up. */
9192 if (htab->plt == NULL
9193 || htab->relplt == NULL
9194 || htab->glink == NULL)
9197 /* Create a JMP_SLOT reloc to inform the dynamic linker to
9198 fill in the PLT entry. */
9199 rela.r_offset = (htab->plt->output_section->vma
9200 + htab->plt->output_offset
9202 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
9203 rela.r_addend = ent->addend;
9205 loc = htab->relplt->contents;
9206 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
9207 * sizeof (Elf64_External_Rela));
9208 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
9211 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
9213 Elf_Internal_Rela rela;
9216 /* This symbol needs a copy reloc. Set it up. */
9218 if (h->dynindx == -1
9219 || (h->root.type != bfd_link_hash_defined
9220 && h->root.type != bfd_link_hash_defweak)
9221 || htab->relbss == NULL)
9224 rela.r_offset = (h->root.u.def.value
9225 + h->root.u.def.section->output_section->vma
9226 + h->root.u.def.section->output_offset);
9227 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
9229 loc = htab->relbss->contents;
9230 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
9231 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
9234 /* Mark some specially defined symbols as absolute. */
9235 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
9236 sym->st_shndx = SHN_ABS;
9241 /* Used to decide how to sort relocs in an optimal manner for the
9242 dynamic linker, before writing them out. */
9244 static enum elf_reloc_type_class
9245 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
9247 enum elf_ppc64_reloc_type r_type;
9249 r_type = ELF64_R_TYPE (rela->r_info);
9252 case R_PPC64_RELATIVE:
9253 return reloc_class_relative;
9254 case R_PPC64_JMP_SLOT:
9255 return reloc_class_plt;
9257 return reloc_class_copy;
9259 return reloc_class_normal;
9263 /* Finish up the dynamic sections. */
9266 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
9267 struct bfd_link_info *info)
9269 struct ppc_link_hash_table *htab;
9273 htab = ppc_hash_table (info);
9274 dynobj = htab->elf.dynobj;
9275 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
9277 if (htab->elf.dynamic_sections_created)
9279 Elf64_External_Dyn *dyncon, *dynconend;
9281 if (sdyn == NULL || htab->got == NULL)
9284 dyncon = (Elf64_External_Dyn *) sdyn->contents;
9285 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
9286 for (; dyncon < dynconend; dyncon++)
9288 Elf_Internal_Dyn dyn;
9291 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
9298 case DT_PPC64_GLINK:
9300 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9301 /* We stupidly defined DT_PPC64_GLINK to be the start
9302 of glink rather than the first entry point, which is
9303 what ld.so needs, and now have a bigger stub to
9304 support automatic multiple TOCs. */
9305 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
9309 s = bfd_get_section_by_name (output_bfd, ".opd");
9312 dyn.d_un.d_ptr = s->vma;
9315 case DT_PPC64_OPDSZ:
9316 s = bfd_get_section_by_name (output_bfd, ".opd");
9319 dyn.d_un.d_val = s->size;
9324 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9329 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9333 dyn.d_un.d_val = htab->relplt->size;
9337 /* Don't count procedure linkage table relocs in the
9338 overall reloc count. */
9342 dyn.d_un.d_val -= s->size;
9346 /* We may not be using the standard ELF linker script.
9347 If .rela.plt is the first .rela section, we adjust
9348 DT_RELA to not include it. */
9352 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
9354 dyn.d_un.d_ptr += s->size;
9358 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
9362 if (htab->got != NULL && htab->got->size != 0)
9364 /* Fill in the first entry in the global offset table.
9365 We use it to hold the link-time TOCbase. */
9366 bfd_put_64 (output_bfd,
9367 elf_gp (output_bfd) + TOC_BASE_OFF,
9368 htab->got->contents);
9370 /* Set .got entry size. */
9371 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
9374 if (htab->plt != NULL && htab->plt->size != 0)
9376 /* Set .plt entry size. */
9377 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
9381 /* We need to handle writing out multiple GOT sections ourselves,
9382 since we didn't add them to DYNOBJ. */
9383 while ((dynobj = dynobj->link_next) != NULL)
9386 s = ppc64_elf_tdata (dynobj)->got;
9389 && s->output_section != bfd_abs_section_ptr
9390 && !bfd_set_section_contents (output_bfd, s->output_section,
9391 s->contents, s->output_offset,
9394 s = ppc64_elf_tdata (dynobj)->relgot;
9397 && s->output_section != bfd_abs_section_ptr
9398 && !bfd_set_section_contents (output_bfd, s->output_section,
9399 s->contents, s->output_offset,
9407 #include "elf64-target.h"