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_relocs ppc64_elf_check_relocs
87 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
88 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
89 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
90 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
91 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
92 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
93 #define elf_backend_relocate_section ppc64_elf_relocate_section
94 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
95 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
96 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
97 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
98 #define elf_backend_special_sections ppc64_elf_special_sections
100 /* The name of the dynamic interpreter. This is put in the .interp
102 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
104 /* The size in bytes of an entry in the procedure linkage table. */
105 #define PLT_ENTRY_SIZE 24
107 /* The initial size of the plt reserved for the dynamic linker. */
108 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
110 /* TOC base pointers offset from start of TOC. */
111 #define TOC_BASE_OFF 0x8000
113 /* Offset of tp and dtp pointers from start of TLS block. */
114 #define TP_OFFSET 0x7000
115 #define DTP_OFFSET 0x8000
117 /* .plt call stub instructions. The normal stub is like this, but
118 sometimes the .plt entry crosses a 64k boundary and we need to
119 insert an addis to adjust r12. */
120 #define PLT_CALL_STUB_SIZE (7*4)
121 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
122 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
123 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
124 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
125 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
126 /* ld %r11,xxx+16@l(%r12) */
127 #define BCTR 0x4e800420 /* bctr */
130 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
131 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
133 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
135 /* glink call stub instructions. We enter with the index in R0, and the
136 address of glink entry in CTR. From that, we can calculate PLT0. */
137 #define GLINK_CALL_STUB_SIZE (16*4)
138 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
139 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
140 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
141 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
142 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
143 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
144 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
145 /* sub %r12,%r12,%r11 */
146 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
147 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
148 /* ld %r11,xxx@l(%r12) */
149 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
152 /* ld %r11,16(%r12) */
156 #define NOP 0x60000000
158 /* Some other nops. */
159 #define CROR_151515 0x4def7b82
160 #define CROR_313131 0x4ffffb82
162 /* .glink entries for the first 32k functions are two instructions. */
163 #define LI_R0_0 0x38000000 /* li %r0,0 */
164 #define B_DOT 0x48000000 /* b . */
166 /* After that, we need two instructions to load the index, followed by
168 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
169 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
171 /* Instructions to save and restore floating point regs. */
172 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
173 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
174 #define BLR 0x4e800020 /* blr */
176 /* Since .opd is an array of descriptors and each entry will end up
177 with identical R_PPC64_RELATIVE relocs, there is really no need to
178 propagate .opd relocs; The dynamic linker should be taught to
179 relocate .opd without reloc entries. */
180 #ifndef NO_OPD_RELOCS
181 #define NO_OPD_RELOCS 0
184 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
186 /* Relocation HOWTO's. */
187 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
189 static reloc_howto_type ppc64_elf_howto_raw[] = {
190 /* This reloc does nothing. */
191 HOWTO (R_PPC64_NONE, /* type */
193 2, /* size (0 = byte, 1 = short, 2 = long) */
195 FALSE, /* pc_relative */
197 complain_overflow_dont, /* complain_on_overflow */
198 bfd_elf_generic_reloc, /* special_function */
199 "R_PPC64_NONE", /* name */
200 FALSE, /* partial_inplace */
203 FALSE), /* pcrel_offset */
205 /* A standard 32 bit relocation. */
206 HOWTO (R_PPC64_ADDR32, /* type */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
210 FALSE, /* pc_relative */
212 complain_overflow_bitfield, /* complain_on_overflow */
213 bfd_elf_generic_reloc, /* special_function */
214 "R_PPC64_ADDR32", /* name */
215 FALSE, /* partial_inplace */
217 0xffffffff, /* dst_mask */
218 FALSE), /* pcrel_offset */
220 /* An absolute 26 bit branch; the lower two bits must be zero.
221 FIXME: we don't check that, we just clear them. */
222 HOWTO (R_PPC64_ADDR24, /* type */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
226 FALSE, /* pc_relative */
228 complain_overflow_bitfield, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_PPC64_ADDR24", /* name */
231 FALSE, /* partial_inplace */
233 0x03fffffc, /* dst_mask */
234 FALSE), /* pcrel_offset */
236 /* A standard 16 bit relocation. */
237 HOWTO (R_PPC64_ADDR16, /* type */
239 1, /* size (0 = byte, 1 = short, 2 = long) */
241 FALSE, /* pc_relative */
243 complain_overflow_bitfield, /* complain_on_overflow */
244 bfd_elf_generic_reloc, /* special_function */
245 "R_PPC64_ADDR16", /* name */
246 FALSE, /* partial_inplace */
248 0xffff, /* dst_mask */
249 FALSE), /* pcrel_offset */
251 /* A 16 bit relocation without overflow. */
252 HOWTO (R_PPC64_ADDR16_LO, /* type */
254 1, /* size (0 = byte, 1 = short, 2 = long) */
256 FALSE, /* pc_relative */
258 complain_overflow_dont,/* complain_on_overflow */
259 bfd_elf_generic_reloc, /* special_function */
260 "R_PPC64_ADDR16_LO", /* name */
261 FALSE, /* partial_inplace */
263 0xffff, /* dst_mask */
264 FALSE), /* pcrel_offset */
266 /* Bits 16-31 of an address. */
267 HOWTO (R_PPC64_ADDR16_HI, /* type */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
271 FALSE, /* pc_relative */
273 complain_overflow_dont, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_PPC64_ADDR16_HI", /* name */
276 FALSE, /* partial_inplace */
278 0xffff, /* dst_mask */
279 FALSE), /* pcrel_offset */
281 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
282 bits, treated as a signed number, is negative. */
283 HOWTO (R_PPC64_ADDR16_HA, /* type */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
287 FALSE, /* pc_relative */
289 complain_overflow_dont, /* complain_on_overflow */
290 ppc64_elf_ha_reloc, /* special_function */
291 "R_PPC64_ADDR16_HA", /* name */
292 FALSE, /* partial_inplace */
294 0xffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
297 /* An absolute 16 bit branch; the lower two bits must be zero.
298 FIXME: we don't check that, we just clear them. */
299 HOWTO (R_PPC64_ADDR14, /* type */
301 2, /* size (0 = byte, 1 = short, 2 = long) */
303 FALSE, /* pc_relative */
305 complain_overflow_bitfield, /* complain_on_overflow */
306 bfd_elf_generic_reloc, /* special_function */
307 "R_PPC64_ADDR14", /* name */
308 FALSE, /* partial_inplace */
310 0x0000fffc, /* dst_mask */
311 FALSE), /* pcrel_offset */
313 /* An absolute 16 bit branch, for which bit 10 should be set to
314 indicate that the branch is expected to be taken. The lower two
315 bits must be zero. */
316 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
320 FALSE, /* pc_relative */
322 complain_overflow_bitfield, /* complain_on_overflow */
323 ppc64_elf_brtaken_reloc, /* special_function */
324 "R_PPC64_ADDR14_BRTAKEN",/* name */
325 FALSE, /* partial_inplace */
327 0x0000fffc, /* dst_mask */
328 FALSE), /* pcrel_offset */
330 /* An absolute 16 bit branch, for which bit 10 should be set to
331 indicate that the branch is not expected to be taken. The lower
332 two bits must be zero. */
333 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
337 FALSE, /* pc_relative */
339 complain_overflow_bitfield, /* complain_on_overflow */
340 ppc64_elf_brtaken_reloc, /* special_function */
341 "R_PPC64_ADDR14_BRNTAKEN",/* name */
342 FALSE, /* partial_inplace */
344 0x0000fffc, /* dst_mask */
345 FALSE), /* pcrel_offset */
347 /* A relative 26 bit branch; the lower two bits must be zero. */
348 HOWTO (R_PPC64_REL24, /* type */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
352 TRUE, /* pc_relative */
354 complain_overflow_signed, /* complain_on_overflow */
355 bfd_elf_generic_reloc, /* special_function */
356 "R_PPC64_REL24", /* name */
357 FALSE, /* partial_inplace */
359 0x03fffffc, /* dst_mask */
360 TRUE), /* pcrel_offset */
362 /* A relative 16 bit branch; the lower two bits must be zero. */
363 HOWTO (R_PPC64_REL14, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 TRUE, /* pc_relative */
369 complain_overflow_signed, /* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_PPC64_REL14", /* name */
372 FALSE, /* partial_inplace */
374 0x0000fffc, /* dst_mask */
375 TRUE), /* pcrel_offset */
377 /* A relative 16 bit branch. Bit 10 should be set to indicate that
378 the branch is expected to be taken. The lower two bits must be
380 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
384 TRUE, /* pc_relative */
386 complain_overflow_signed, /* complain_on_overflow */
387 ppc64_elf_brtaken_reloc, /* special_function */
388 "R_PPC64_REL14_BRTAKEN", /* name */
389 FALSE, /* partial_inplace */
391 0x0000fffc, /* dst_mask */
392 TRUE), /* pcrel_offset */
394 /* A relative 16 bit branch. Bit 10 should be set to indicate that
395 the branch is not expected to be taken. The lower two bits must
397 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
399 2, /* size (0 = byte, 1 = short, 2 = long) */
401 TRUE, /* pc_relative */
403 complain_overflow_signed, /* complain_on_overflow */
404 ppc64_elf_brtaken_reloc, /* special_function */
405 "R_PPC64_REL14_BRNTAKEN",/* name */
406 FALSE, /* partial_inplace */
408 0x0000fffc, /* dst_mask */
409 TRUE), /* pcrel_offset */
411 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
413 HOWTO (R_PPC64_GOT16, /* type */
415 1, /* size (0 = byte, 1 = short, 2 = long) */
417 FALSE, /* pc_relative */
419 complain_overflow_signed, /* complain_on_overflow */
420 ppc64_elf_unhandled_reloc, /* special_function */
421 "R_PPC64_GOT16", /* name */
422 FALSE, /* partial_inplace */
424 0xffff, /* dst_mask */
425 FALSE), /* pcrel_offset */
427 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
429 HOWTO (R_PPC64_GOT16_LO, /* type */
431 1, /* size (0 = byte, 1 = short, 2 = long) */
433 FALSE, /* pc_relative */
435 complain_overflow_dont, /* complain_on_overflow */
436 ppc64_elf_unhandled_reloc, /* special_function */
437 "R_PPC64_GOT16_LO", /* name */
438 FALSE, /* partial_inplace */
440 0xffff, /* dst_mask */
441 FALSE), /* pcrel_offset */
443 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
445 HOWTO (R_PPC64_GOT16_HI, /* type */
447 1, /* size (0 = byte, 1 = short, 2 = long) */
449 FALSE, /* pc_relative */
451 complain_overflow_dont,/* complain_on_overflow */
452 ppc64_elf_unhandled_reloc, /* special_function */
453 "R_PPC64_GOT16_HI", /* name */
454 FALSE, /* partial_inplace */
456 0xffff, /* dst_mask */
457 FALSE), /* pcrel_offset */
459 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
461 HOWTO (R_PPC64_GOT16_HA, /* type */
463 1, /* size (0 = byte, 1 = short, 2 = long) */
465 FALSE, /* pc_relative */
467 complain_overflow_dont,/* complain_on_overflow */
468 ppc64_elf_unhandled_reloc, /* special_function */
469 "R_PPC64_GOT16_HA", /* name */
470 FALSE, /* partial_inplace */
472 0xffff, /* dst_mask */
473 FALSE), /* pcrel_offset */
475 /* This is used only by the dynamic linker. The symbol should exist
476 both in the object being run and in some shared library. The
477 dynamic linker copies the data addressed by the symbol from the
478 shared library into the object, because the object being
479 run has to have the data at some particular address. */
480 HOWTO (R_PPC64_COPY, /* type */
482 0, /* this one is variable size */
484 FALSE, /* pc_relative */
486 complain_overflow_dont, /* complain_on_overflow */
487 ppc64_elf_unhandled_reloc, /* special_function */
488 "R_PPC64_COPY", /* name */
489 FALSE, /* partial_inplace */
492 FALSE), /* pcrel_offset */
494 /* Like R_PPC64_ADDR64, but used when setting global offset table
496 HOWTO (R_PPC64_GLOB_DAT, /* type */
498 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
500 FALSE, /* pc_relative */
502 complain_overflow_dont, /* complain_on_overflow */
503 ppc64_elf_unhandled_reloc, /* special_function */
504 "R_PPC64_GLOB_DAT", /* name */
505 FALSE, /* partial_inplace */
507 ONES (64), /* dst_mask */
508 FALSE), /* pcrel_offset */
510 /* Created by the link editor. Marks a procedure linkage table
511 entry for a symbol. */
512 HOWTO (R_PPC64_JMP_SLOT, /* type */
514 0, /* size (0 = byte, 1 = short, 2 = long) */
516 FALSE, /* pc_relative */
518 complain_overflow_dont, /* complain_on_overflow */
519 ppc64_elf_unhandled_reloc, /* special_function */
520 "R_PPC64_JMP_SLOT", /* name */
521 FALSE, /* partial_inplace */
524 FALSE), /* pcrel_offset */
526 /* Used only by the dynamic linker. When the object is run, this
527 doubleword64 is set to the load address of the object, plus the
529 HOWTO (R_PPC64_RELATIVE, /* type */
531 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
533 FALSE, /* pc_relative */
535 complain_overflow_dont, /* complain_on_overflow */
536 bfd_elf_generic_reloc, /* special_function */
537 "R_PPC64_RELATIVE", /* name */
538 FALSE, /* partial_inplace */
540 ONES (64), /* dst_mask */
541 FALSE), /* pcrel_offset */
543 /* Like R_PPC64_ADDR32, but may be unaligned. */
544 HOWTO (R_PPC64_UADDR32, /* type */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
548 FALSE, /* pc_relative */
550 complain_overflow_bitfield, /* complain_on_overflow */
551 bfd_elf_generic_reloc, /* special_function */
552 "R_PPC64_UADDR32", /* name */
553 FALSE, /* partial_inplace */
555 0xffffffff, /* dst_mask */
556 FALSE), /* pcrel_offset */
558 /* Like R_PPC64_ADDR16, but may be unaligned. */
559 HOWTO (R_PPC64_UADDR16, /* type */
561 1, /* size (0 = byte, 1 = short, 2 = long) */
563 FALSE, /* pc_relative */
565 complain_overflow_bitfield, /* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_PPC64_UADDR16", /* name */
568 FALSE, /* partial_inplace */
570 0xffff, /* dst_mask */
571 FALSE), /* pcrel_offset */
573 /* 32-bit PC relative. */
574 HOWTO (R_PPC64_REL32, /* type */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
578 TRUE, /* pc_relative */
580 /* FIXME: Verify. Was complain_overflow_bitfield. */
581 complain_overflow_signed, /* complain_on_overflow */
582 bfd_elf_generic_reloc, /* special_function */
583 "R_PPC64_REL32", /* name */
584 FALSE, /* partial_inplace */
586 0xffffffff, /* dst_mask */
587 TRUE), /* pcrel_offset */
589 /* 32-bit relocation to the symbol's procedure linkage table. */
590 HOWTO (R_PPC64_PLT32, /* type */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE, /* pc_relative */
596 complain_overflow_bitfield, /* complain_on_overflow */
597 ppc64_elf_unhandled_reloc, /* special_function */
598 "R_PPC64_PLT32", /* name */
599 FALSE, /* partial_inplace */
601 0xffffffff, /* dst_mask */
602 FALSE), /* pcrel_offset */
604 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
605 FIXME: R_PPC64_PLTREL32 not supported. */
606 HOWTO (R_PPC64_PLTREL32, /* type */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
610 TRUE, /* pc_relative */
612 complain_overflow_signed, /* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
614 "R_PPC64_PLTREL32", /* name */
615 FALSE, /* partial_inplace */
617 0xffffffff, /* dst_mask */
618 TRUE), /* pcrel_offset */
620 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
622 HOWTO (R_PPC64_PLT16_LO, /* type */
624 1, /* size (0 = byte, 1 = short, 2 = long) */
626 FALSE, /* pc_relative */
628 complain_overflow_dont, /* complain_on_overflow */
629 ppc64_elf_unhandled_reloc, /* special_function */
630 "R_PPC64_PLT16_LO", /* name */
631 FALSE, /* partial_inplace */
633 0xffff, /* dst_mask */
634 FALSE), /* pcrel_offset */
636 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
638 HOWTO (R_PPC64_PLT16_HI, /* type */
640 1, /* size (0 = byte, 1 = short, 2 = long) */
642 FALSE, /* pc_relative */
644 complain_overflow_dont, /* complain_on_overflow */
645 ppc64_elf_unhandled_reloc, /* special_function */
646 "R_PPC64_PLT16_HI", /* name */
647 FALSE, /* partial_inplace */
649 0xffff, /* dst_mask */
650 FALSE), /* pcrel_offset */
652 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
654 HOWTO (R_PPC64_PLT16_HA, /* type */
656 1, /* size (0 = byte, 1 = short, 2 = long) */
658 FALSE, /* pc_relative */
660 complain_overflow_dont, /* complain_on_overflow */
661 ppc64_elf_unhandled_reloc, /* special_function */
662 "R_PPC64_PLT16_HA", /* name */
663 FALSE, /* partial_inplace */
665 0xffff, /* dst_mask */
666 FALSE), /* pcrel_offset */
668 /* 16-bit section relative relocation. */
669 HOWTO (R_PPC64_SECTOFF, /* type */
671 1, /* size (0 = byte, 1 = short, 2 = long) */
673 FALSE, /* pc_relative */
675 complain_overflow_bitfield, /* complain_on_overflow */
676 ppc64_elf_sectoff_reloc, /* special_function */
677 "R_PPC64_SECTOFF", /* name */
678 FALSE, /* partial_inplace */
680 0xffff, /* dst_mask */
681 FALSE), /* pcrel_offset */
683 /* Like R_PPC64_SECTOFF, but no overflow warning. */
684 HOWTO (R_PPC64_SECTOFF_LO, /* type */
686 1, /* size (0 = byte, 1 = short, 2 = long) */
688 FALSE, /* pc_relative */
690 complain_overflow_dont, /* complain_on_overflow */
691 ppc64_elf_sectoff_reloc, /* special_function */
692 "R_PPC64_SECTOFF_LO", /* name */
693 FALSE, /* partial_inplace */
695 0xffff, /* dst_mask */
696 FALSE), /* pcrel_offset */
698 /* 16-bit upper half section relative relocation. */
699 HOWTO (R_PPC64_SECTOFF_HI, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE, /* pc_relative */
705 complain_overflow_dont, /* complain_on_overflow */
706 ppc64_elf_sectoff_reloc, /* special_function */
707 "R_PPC64_SECTOFF_HI", /* name */
708 FALSE, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
713 /* 16-bit upper half adjusted section relative relocation. */
714 HOWTO (R_PPC64_SECTOFF_HA, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE, /* pc_relative */
720 complain_overflow_dont, /* complain_on_overflow */
721 ppc64_elf_sectoff_ha_reloc, /* special_function */
722 "R_PPC64_SECTOFF_HA", /* name */
723 FALSE, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
728 /* Like R_PPC64_REL24 without touching the two least significant bits. */
729 HOWTO (R_PPC64_REL30, /* type */
731 2, /* size (0 = byte, 1 = short, 2 = long) */
733 TRUE, /* pc_relative */
735 complain_overflow_dont, /* complain_on_overflow */
736 bfd_elf_generic_reloc, /* special_function */
737 "R_PPC64_REL30", /* name */
738 FALSE, /* partial_inplace */
740 0xfffffffc, /* dst_mask */
741 TRUE), /* pcrel_offset */
743 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
745 /* A standard 64-bit relocation. */
746 HOWTO (R_PPC64_ADDR64, /* type */
748 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
750 FALSE, /* pc_relative */
752 complain_overflow_dont, /* complain_on_overflow */
753 bfd_elf_generic_reloc, /* special_function */
754 "R_PPC64_ADDR64", /* name */
755 FALSE, /* partial_inplace */
757 ONES (64), /* dst_mask */
758 FALSE), /* pcrel_offset */
760 /* The bits 32-47 of an address. */
761 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
765 FALSE, /* pc_relative */
767 complain_overflow_dont, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_PPC64_ADDR16_HIGHER", /* name */
770 FALSE, /* partial_inplace */
772 0xffff, /* dst_mask */
773 FALSE), /* pcrel_offset */
775 /* The bits 32-47 of an address, plus 1 if the contents of the low
776 16 bits, treated as a signed number, is negative. */
777 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
779 1, /* size (0 = byte, 1 = short, 2 = long) */
781 FALSE, /* pc_relative */
783 complain_overflow_dont, /* complain_on_overflow */
784 ppc64_elf_ha_reloc, /* special_function */
785 "R_PPC64_ADDR16_HIGHERA", /* name */
786 FALSE, /* partial_inplace */
788 0xffff, /* dst_mask */
789 FALSE), /* pcrel_offset */
791 /* The bits 48-63 of an address. */
792 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
794 1, /* size (0 = byte, 1 = short, 2 = long) */
796 FALSE, /* pc_relative */
798 complain_overflow_dont, /* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
800 "R_PPC64_ADDR16_HIGHEST", /* name */
801 FALSE, /* partial_inplace */
803 0xffff, /* dst_mask */
804 FALSE), /* pcrel_offset */
806 /* The bits 48-63 of an address, plus 1 if the contents of the low
807 16 bits, treated as a signed number, is negative. */
808 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
810 1, /* size (0 = byte, 1 = short, 2 = long) */
812 FALSE, /* pc_relative */
814 complain_overflow_dont, /* complain_on_overflow */
815 ppc64_elf_ha_reloc, /* special_function */
816 "R_PPC64_ADDR16_HIGHESTA", /* name */
817 FALSE, /* partial_inplace */
819 0xffff, /* dst_mask */
820 FALSE), /* pcrel_offset */
822 /* Like ADDR64, but may be unaligned. */
823 HOWTO (R_PPC64_UADDR64, /* type */
825 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
827 FALSE, /* pc_relative */
829 complain_overflow_dont, /* complain_on_overflow */
830 bfd_elf_generic_reloc, /* special_function */
831 "R_PPC64_UADDR64", /* name */
832 FALSE, /* partial_inplace */
834 ONES (64), /* dst_mask */
835 FALSE), /* pcrel_offset */
837 /* 64-bit relative relocation. */
838 HOWTO (R_PPC64_REL64, /* type */
840 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
842 TRUE, /* pc_relative */
844 complain_overflow_dont, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_PPC64_REL64", /* name */
847 FALSE, /* partial_inplace */
849 ONES (64), /* dst_mask */
850 TRUE), /* pcrel_offset */
852 /* 64-bit relocation to the symbol's procedure linkage table. */
853 HOWTO (R_PPC64_PLT64, /* type */
855 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
857 FALSE, /* pc_relative */
859 complain_overflow_dont, /* complain_on_overflow */
860 ppc64_elf_unhandled_reloc, /* special_function */
861 "R_PPC64_PLT64", /* name */
862 FALSE, /* partial_inplace */
864 ONES (64), /* dst_mask */
865 FALSE), /* pcrel_offset */
867 /* 64-bit PC relative relocation to the symbol's procedure linkage
869 /* FIXME: R_PPC64_PLTREL64 not supported. */
870 HOWTO (R_PPC64_PLTREL64, /* type */
872 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
874 TRUE, /* pc_relative */
876 complain_overflow_dont, /* complain_on_overflow */
877 ppc64_elf_unhandled_reloc, /* special_function */
878 "R_PPC64_PLTREL64", /* name */
879 FALSE, /* partial_inplace */
881 ONES (64), /* dst_mask */
882 TRUE), /* pcrel_offset */
884 /* 16 bit TOC-relative relocation. */
886 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
887 HOWTO (R_PPC64_TOC16, /* type */
889 1, /* size (0 = byte, 1 = short, 2 = long) */
891 FALSE, /* pc_relative */
893 complain_overflow_signed, /* complain_on_overflow */
894 ppc64_elf_toc_reloc, /* special_function */
895 "R_PPC64_TOC16", /* name */
896 FALSE, /* partial_inplace */
898 0xffff, /* dst_mask */
899 FALSE), /* pcrel_offset */
901 /* 16 bit TOC-relative relocation without overflow. */
903 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
904 HOWTO (R_PPC64_TOC16_LO, /* type */
906 1, /* size (0 = byte, 1 = short, 2 = long) */
908 FALSE, /* pc_relative */
910 complain_overflow_dont, /* complain_on_overflow */
911 ppc64_elf_toc_reloc, /* special_function */
912 "R_PPC64_TOC16_LO", /* name */
913 FALSE, /* partial_inplace */
915 0xffff, /* dst_mask */
916 FALSE), /* pcrel_offset */
918 /* 16 bit TOC-relative relocation, high 16 bits. */
920 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
921 HOWTO (R_PPC64_TOC16_HI, /* type */
923 1, /* size (0 = byte, 1 = short, 2 = long) */
925 FALSE, /* pc_relative */
927 complain_overflow_dont, /* complain_on_overflow */
928 ppc64_elf_toc_reloc, /* special_function */
929 "R_PPC64_TOC16_HI", /* name */
930 FALSE, /* partial_inplace */
932 0xffff, /* dst_mask */
933 FALSE), /* pcrel_offset */
935 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
936 contents of the low 16 bits, treated as a signed number, is
939 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
940 HOWTO (R_PPC64_TOC16_HA, /* type */
942 1, /* size (0 = byte, 1 = short, 2 = long) */
944 FALSE, /* pc_relative */
946 complain_overflow_dont, /* complain_on_overflow */
947 ppc64_elf_toc_ha_reloc, /* special_function */
948 "R_PPC64_TOC16_HA", /* name */
949 FALSE, /* partial_inplace */
951 0xffff, /* dst_mask */
952 FALSE), /* pcrel_offset */
954 /* 64-bit relocation; insert value of TOC base (.TOC.). */
956 /* R_PPC64_TOC 51 doubleword64 .TOC. */
957 HOWTO (R_PPC64_TOC, /* type */
959 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
961 FALSE, /* pc_relative */
963 complain_overflow_bitfield, /* complain_on_overflow */
964 ppc64_elf_toc64_reloc, /* special_function */
965 "R_PPC64_TOC", /* name */
966 FALSE, /* partial_inplace */
968 ONES (64), /* dst_mask */
969 FALSE), /* pcrel_offset */
971 /* Like R_PPC64_GOT16, but also informs the link editor that the
972 value to relocate may (!) refer to a PLT entry which the link
973 editor (a) may replace with the symbol value. If the link editor
974 is unable to fully resolve the symbol, it may (b) create a PLT
975 entry and store the address to the new PLT entry in the GOT.
976 This permits lazy resolution of function symbols at run time.
977 The link editor may also skip all of this and just (c) emit a
978 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
979 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
980 HOWTO (R_PPC64_PLTGOT16, /* type */
982 1, /* size (0 = byte, 1 = short, 2 = long) */
984 FALSE, /* pc_relative */
986 complain_overflow_signed, /* complain_on_overflow */
987 ppc64_elf_unhandled_reloc, /* special_function */
988 "R_PPC64_PLTGOT16", /* name */
989 FALSE, /* partial_inplace */
991 0xffff, /* dst_mask */
992 FALSE), /* pcrel_offset */
994 /* Like R_PPC64_PLTGOT16, but without overflow. */
995 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
996 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
998 1, /* size (0 = byte, 1 = short, 2 = long) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_dont, /* complain_on_overflow */
1003 ppc64_elf_unhandled_reloc, /* special_function */
1004 "R_PPC64_PLTGOT16_LO", /* name */
1005 FALSE, /* partial_inplace */
1007 0xffff, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1011 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1012 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1013 16, /* rightshift */
1014 1, /* size (0 = byte, 1 = short, 2 = long) */
1016 FALSE, /* pc_relative */
1018 complain_overflow_dont, /* complain_on_overflow */
1019 ppc64_elf_unhandled_reloc, /* special_function */
1020 "R_PPC64_PLTGOT16_HI", /* name */
1021 FALSE, /* partial_inplace */
1023 0xffff, /* dst_mask */
1024 FALSE), /* pcrel_offset */
1026 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1027 1 if the contents of the low 16 bits, treated as a signed number,
1029 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1030 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1031 16, /* rightshift */
1032 1, /* size (0 = byte, 1 = short, 2 = long) */
1034 FALSE, /* pc_relative */
1036 complain_overflow_dont,/* complain_on_overflow */
1037 ppc64_elf_unhandled_reloc, /* special_function */
1038 "R_PPC64_PLTGOT16_HA", /* name */
1039 FALSE, /* partial_inplace */
1041 0xffff, /* dst_mask */
1042 FALSE), /* pcrel_offset */
1044 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1045 HOWTO (R_PPC64_ADDR16_DS, /* type */
1047 1, /* size (0 = byte, 1 = short, 2 = long) */
1049 FALSE, /* pc_relative */
1051 complain_overflow_bitfield, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_PPC64_ADDR16_DS", /* name */
1054 FALSE, /* partial_inplace */
1056 0xfffc, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1059 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1060 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE, /* pc_relative */
1066 complain_overflow_dont,/* complain_on_overflow */
1067 bfd_elf_generic_reloc, /* special_function */
1068 "R_PPC64_ADDR16_LO_DS",/* name */
1069 FALSE, /* partial_inplace */
1071 0xfffc, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1074 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1075 HOWTO (R_PPC64_GOT16_DS, /* type */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1079 FALSE, /* pc_relative */
1081 complain_overflow_signed, /* complain_on_overflow */
1082 ppc64_elf_unhandled_reloc, /* special_function */
1083 "R_PPC64_GOT16_DS", /* name */
1084 FALSE, /* partial_inplace */
1086 0xfffc, /* dst_mask */
1087 FALSE), /* pcrel_offset */
1089 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1090 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE, /* pc_relative */
1096 complain_overflow_dont, /* complain_on_overflow */
1097 ppc64_elf_unhandled_reloc, /* special_function */
1098 "R_PPC64_GOT16_LO_DS", /* name */
1099 FALSE, /* partial_inplace */
1101 0xfffc, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1104 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1109 FALSE, /* pc_relative */
1111 complain_overflow_dont, /* complain_on_overflow */
1112 ppc64_elf_unhandled_reloc, /* special_function */
1113 "R_PPC64_PLT16_LO_DS", /* name */
1114 FALSE, /* partial_inplace */
1116 0xfffc, /* dst_mask */
1117 FALSE), /* pcrel_offset */
1119 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 FALSE, /* pc_relative */
1126 complain_overflow_bitfield, /* complain_on_overflow */
1127 ppc64_elf_sectoff_reloc, /* special_function */
1128 "R_PPC64_SECTOFF_DS", /* name */
1129 FALSE, /* partial_inplace */
1131 0xfffc, /* dst_mask */
1132 FALSE), /* pcrel_offset */
1134 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 FALSE, /* pc_relative */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 ppc64_elf_sectoff_reloc, /* special_function */
1143 "R_PPC64_SECTOFF_LO_DS",/* name */
1144 FALSE, /* partial_inplace */
1146 0xfffc, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1149 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1150 HOWTO (R_PPC64_TOC16_DS, /* type */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 FALSE, /* pc_relative */
1156 complain_overflow_signed, /* complain_on_overflow */
1157 ppc64_elf_toc_reloc, /* special_function */
1158 "R_PPC64_TOC16_DS", /* name */
1159 FALSE, /* partial_inplace */
1161 0xfffc, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1164 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1165 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 FALSE, /* pc_relative */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 ppc64_elf_toc_reloc, /* special_function */
1173 "R_PPC64_TOC16_LO_DS", /* name */
1174 FALSE, /* partial_inplace */
1176 0xfffc, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1179 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1180 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1181 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1183 1, /* size (0 = byte, 1 = short, 2 = long) */
1185 FALSE, /* pc_relative */
1187 complain_overflow_signed, /* complain_on_overflow */
1188 ppc64_elf_unhandled_reloc, /* special_function */
1189 "R_PPC64_PLTGOT16_DS", /* name */
1190 FALSE, /* partial_inplace */
1192 0xfffc, /* dst_mask */
1193 FALSE), /* pcrel_offset */
1195 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1196 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1197 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1201 FALSE, /* pc_relative */
1203 complain_overflow_dont, /* complain_on_overflow */
1204 ppc64_elf_unhandled_reloc, /* special_function */
1205 "R_PPC64_PLTGOT16_LO_DS",/* name */
1206 FALSE, /* partial_inplace */
1208 0xfffc, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1211 /* Marker reloc for TLS. */
1214 2, /* size (0 = byte, 1 = short, 2 = long) */
1216 FALSE, /* pc_relative */
1218 complain_overflow_dont, /* complain_on_overflow */
1219 bfd_elf_generic_reloc, /* special_function */
1220 "R_PPC64_TLS", /* name */
1221 FALSE, /* partial_inplace */
1224 FALSE), /* pcrel_offset */
1226 /* Computes the load module index of the load module that contains the
1227 definition of its TLS sym. */
1228 HOWTO (R_PPC64_DTPMOD64,
1230 4, /* size (0 = byte, 1 = short, 2 = long) */
1232 FALSE, /* pc_relative */
1234 complain_overflow_dont, /* complain_on_overflow */
1235 ppc64_elf_unhandled_reloc, /* special_function */
1236 "R_PPC64_DTPMOD64", /* name */
1237 FALSE, /* partial_inplace */
1239 ONES (64), /* dst_mask */
1240 FALSE), /* pcrel_offset */
1242 /* Computes a dtv-relative displacement, the difference between the value
1243 of sym+add and the base address of the thread-local storage block that
1244 contains the definition of sym, minus 0x8000. */
1245 HOWTO (R_PPC64_DTPREL64,
1247 4, /* size (0 = byte, 1 = short, 2 = long) */
1249 FALSE, /* pc_relative */
1251 complain_overflow_dont, /* complain_on_overflow */
1252 ppc64_elf_unhandled_reloc, /* special_function */
1253 "R_PPC64_DTPREL64", /* name */
1254 FALSE, /* partial_inplace */
1256 ONES (64), /* dst_mask */
1257 FALSE), /* pcrel_offset */
1259 /* A 16 bit dtprel reloc. */
1260 HOWTO (R_PPC64_DTPREL16,
1262 1, /* size (0 = byte, 1 = short, 2 = long) */
1264 FALSE, /* pc_relative */
1266 complain_overflow_signed, /* complain_on_overflow */
1267 ppc64_elf_unhandled_reloc, /* special_function */
1268 "R_PPC64_DTPREL16", /* name */
1269 FALSE, /* partial_inplace */
1271 0xffff, /* dst_mask */
1272 FALSE), /* pcrel_offset */
1274 /* Like DTPREL16, but no overflow. */
1275 HOWTO (R_PPC64_DTPREL16_LO,
1277 1, /* size (0 = byte, 1 = short, 2 = long) */
1279 FALSE, /* pc_relative */
1281 complain_overflow_dont, /* complain_on_overflow */
1282 ppc64_elf_unhandled_reloc, /* special_function */
1283 "R_PPC64_DTPREL16_LO", /* name */
1284 FALSE, /* partial_inplace */
1286 0xffff, /* dst_mask */
1287 FALSE), /* pcrel_offset */
1289 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1290 HOWTO (R_PPC64_DTPREL16_HI,
1291 16, /* rightshift */
1292 1, /* size (0 = byte, 1 = short, 2 = long) */
1294 FALSE, /* pc_relative */
1296 complain_overflow_dont, /* complain_on_overflow */
1297 ppc64_elf_unhandled_reloc, /* special_function */
1298 "R_PPC64_DTPREL16_HI", /* name */
1299 FALSE, /* partial_inplace */
1301 0xffff, /* dst_mask */
1302 FALSE), /* pcrel_offset */
1304 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1305 HOWTO (R_PPC64_DTPREL16_HA,
1306 16, /* rightshift */
1307 1, /* size (0 = byte, 1 = short, 2 = long) */
1309 FALSE, /* pc_relative */
1311 complain_overflow_dont, /* complain_on_overflow */
1312 ppc64_elf_unhandled_reloc, /* special_function */
1313 "R_PPC64_DTPREL16_HA", /* name */
1314 FALSE, /* partial_inplace */
1316 0xffff, /* dst_mask */
1317 FALSE), /* pcrel_offset */
1319 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1320 HOWTO (R_PPC64_DTPREL16_HIGHER,
1321 32, /* rightshift */
1322 1, /* size (0 = byte, 1 = short, 2 = long) */
1324 FALSE, /* pc_relative */
1326 complain_overflow_dont, /* complain_on_overflow */
1327 ppc64_elf_unhandled_reloc, /* special_function */
1328 "R_PPC64_DTPREL16_HIGHER", /* name */
1329 FALSE, /* partial_inplace */
1331 0xffff, /* dst_mask */
1332 FALSE), /* pcrel_offset */
1334 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1335 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1336 32, /* rightshift */
1337 1, /* size (0 = byte, 1 = short, 2 = long) */
1339 FALSE, /* pc_relative */
1341 complain_overflow_dont, /* complain_on_overflow */
1342 ppc64_elf_unhandled_reloc, /* special_function */
1343 "R_PPC64_DTPREL16_HIGHERA", /* name */
1344 FALSE, /* partial_inplace */
1346 0xffff, /* dst_mask */
1347 FALSE), /* pcrel_offset */
1349 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1350 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1351 48, /* rightshift */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1354 FALSE, /* pc_relative */
1356 complain_overflow_dont, /* complain_on_overflow */
1357 ppc64_elf_unhandled_reloc, /* special_function */
1358 "R_PPC64_DTPREL16_HIGHEST", /* name */
1359 FALSE, /* partial_inplace */
1361 0xffff, /* dst_mask */
1362 FALSE), /* pcrel_offset */
1364 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1365 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1366 48, /* rightshift */
1367 1, /* size (0 = byte, 1 = short, 2 = long) */
1369 FALSE, /* pc_relative */
1371 complain_overflow_dont, /* complain_on_overflow */
1372 ppc64_elf_unhandled_reloc, /* special_function */
1373 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1374 FALSE, /* partial_inplace */
1376 0xffff, /* dst_mask */
1377 FALSE), /* pcrel_offset */
1379 /* Like DTPREL16, but for insns with a DS field. */
1380 HOWTO (R_PPC64_DTPREL16_DS,
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1384 FALSE, /* pc_relative */
1386 complain_overflow_signed, /* complain_on_overflow */
1387 ppc64_elf_unhandled_reloc, /* special_function */
1388 "R_PPC64_DTPREL16_DS", /* name */
1389 FALSE, /* partial_inplace */
1391 0xfffc, /* dst_mask */
1392 FALSE), /* pcrel_offset */
1394 /* Like DTPREL16_DS, but no overflow. */
1395 HOWTO (R_PPC64_DTPREL16_LO_DS,
1397 1, /* size (0 = byte, 1 = short, 2 = long) */
1399 FALSE, /* pc_relative */
1401 complain_overflow_dont, /* complain_on_overflow */
1402 ppc64_elf_unhandled_reloc, /* special_function */
1403 "R_PPC64_DTPREL16_LO_DS", /* name */
1404 FALSE, /* partial_inplace */
1406 0xfffc, /* dst_mask */
1407 FALSE), /* pcrel_offset */
1409 /* Computes a tp-relative displacement, the difference between the value of
1410 sym+add and the value of the thread pointer (r13). */
1411 HOWTO (R_PPC64_TPREL64,
1413 4, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE, /* pc_relative */
1417 complain_overflow_dont, /* complain_on_overflow */
1418 ppc64_elf_unhandled_reloc, /* special_function */
1419 "R_PPC64_TPREL64", /* name */
1420 FALSE, /* partial_inplace */
1422 ONES (64), /* dst_mask */
1423 FALSE), /* pcrel_offset */
1425 /* A 16 bit tprel reloc. */
1426 HOWTO (R_PPC64_TPREL16,
1428 1, /* size (0 = byte, 1 = short, 2 = long) */
1430 FALSE, /* pc_relative */
1432 complain_overflow_signed, /* complain_on_overflow */
1433 ppc64_elf_unhandled_reloc, /* special_function */
1434 "R_PPC64_TPREL16", /* name */
1435 FALSE, /* partial_inplace */
1437 0xffff, /* dst_mask */
1438 FALSE), /* pcrel_offset */
1440 /* Like TPREL16, but no overflow. */
1441 HOWTO (R_PPC64_TPREL16_LO,
1443 1, /* size (0 = byte, 1 = short, 2 = long) */
1445 FALSE, /* pc_relative */
1447 complain_overflow_dont, /* complain_on_overflow */
1448 ppc64_elf_unhandled_reloc, /* special_function */
1449 "R_PPC64_TPREL16_LO", /* name */
1450 FALSE, /* partial_inplace */
1452 0xffff, /* dst_mask */
1453 FALSE), /* pcrel_offset */
1455 /* Like TPREL16_LO, but next higher group of 16 bits. */
1456 HOWTO (R_PPC64_TPREL16_HI,
1457 16, /* rightshift */
1458 1, /* size (0 = byte, 1 = short, 2 = long) */
1460 FALSE, /* pc_relative */
1462 complain_overflow_dont, /* complain_on_overflow */
1463 ppc64_elf_unhandled_reloc, /* special_function */
1464 "R_PPC64_TPREL16_HI", /* name */
1465 FALSE, /* partial_inplace */
1467 0xffff, /* dst_mask */
1468 FALSE), /* pcrel_offset */
1470 /* Like TPREL16_HI, but adjust for low 16 bits. */
1471 HOWTO (R_PPC64_TPREL16_HA,
1472 16, /* rightshift */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1475 FALSE, /* pc_relative */
1477 complain_overflow_dont, /* complain_on_overflow */
1478 ppc64_elf_unhandled_reloc, /* special_function */
1479 "R_PPC64_TPREL16_HA", /* name */
1480 FALSE, /* partial_inplace */
1482 0xffff, /* dst_mask */
1483 FALSE), /* pcrel_offset */
1485 /* Like TPREL16_HI, but next higher group of 16 bits. */
1486 HOWTO (R_PPC64_TPREL16_HIGHER,
1487 32, /* rightshift */
1488 1, /* size (0 = byte, 1 = short, 2 = long) */
1490 FALSE, /* pc_relative */
1492 complain_overflow_dont, /* complain_on_overflow */
1493 ppc64_elf_unhandled_reloc, /* special_function */
1494 "R_PPC64_TPREL16_HIGHER", /* name */
1495 FALSE, /* partial_inplace */
1497 0xffff, /* dst_mask */
1498 FALSE), /* pcrel_offset */
1500 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1501 HOWTO (R_PPC64_TPREL16_HIGHERA,
1502 32, /* rightshift */
1503 1, /* size (0 = byte, 1 = short, 2 = long) */
1505 FALSE, /* pc_relative */
1507 complain_overflow_dont, /* complain_on_overflow */
1508 ppc64_elf_unhandled_reloc, /* special_function */
1509 "R_PPC64_TPREL16_HIGHERA", /* name */
1510 FALSE, /* partial_inplace */
1512 0xffff, /* dst_mask */
1513 FALSE), /* pcrel_offset */
1515 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1516 HOWTO (R_PPC64_TPREL16_HIGHEST,
1517 48, /* rightshift */
1518 1, /* size (0 = byte, 1 = short, 2 = long) */
1520 FALSE, /* pc_relative */
1522 complain_overflow_dont, /* complain_on_overflow */
1523 ppc64_elf_unhandled_reloc, /* special_function */
1524 "R_PPC64_TPREL16_HIGHEST", /* name */
1525 FALSE, /* partial_inplace */
1527 0xffff, /* dst_mask */
1528 FALSE), /* pcrel_offset */
1530 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1531 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1532 48, /* rightshift */
1533 1, /* size (0 = byte, 1 = short, 2 = long) */
1535 FALSE, /* pc_relative */
1537 complain_overflow_dont, /* complain_on_overflow */
1538 ppc64_elf_unhandled_reloc, /* special_function */
1539 "R_PPC64_TPREL16_HIGHESTA", /* name */
1540 FALSE, /* partial_inplace */
1542 0xffff, /* dst_mask */
1543 FALSE), /* pcrel_offset */
1545 /* Like TPREL16, but for insns with a DS field. */
1546 HOWTO (R_PPC64_TPREL16_DS,
1548 1, /* size (0 = byte, 1 = short, 2 = long) */
1550 FALSE, /* pc_relative */
1552 complain_overflow_signed, /* complain_on_overflow */
1553 ppc64_elf_unhandled_reloc, /* special_function */
1554 "R_PPC64_TPREL16_DS", /* name */
1555 FALSE, /* partial_inplace */
1557 0xfffc, /* dst_mask */
1558 FALSE), /* pcrel_offset */
1560 /* Like TPREL16_DS, but no overflow. */
1561 HOWTO (R_PPC64_TPREL16_LO_DS,
1563 1, /* size (0 = byte, 1 = short, 2 = long) */
1565 FALSE, /* pc_relative */
1567 complain_overflow_dont, /* complain_on_overflow */
1568 ppc64_elf_unhandled_reloc, /* special_function */
1569 "R_PPC64_TPREL16_LO_DS", /* name */
1570 FALSE, /* partial_inplace */
1572 0xfffc, /* dst_mask */
1573 FALSE), /* pcrel_offset */
1575 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1576 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1577 to the first entry relative to the TOC base (r2). */
1578 HOWTO (R_PPC64_GOT_TLSGD16,
1580 1, /* size (0 = byte, 1 = short, 2 = long) */
1582 FALSE, /* pc_relative */
1584 complain_overflow_signed, /* complain_on_overflow */
1585 ppc64_elf_unhandled_reloc, /* special_function */
1586 "R_PPC64_GOT_TLSGD16", /* name */
1587 FALSE, /* partial_inplace */
1589 0xffff, /* dst_mask */
1590 FALSE), /* pcrel_offset */
1592 /* Like GOT_TLSGD16, but no overflow. */
1593 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1595 1, /* size (0 = byte, 1 = short, 2 = long) */
1597 FALSE, /* pc_relative */
1599 complain_overflow_dont, /* complain_on_overflow */
1600 ppc64_elf_unhandled_reloc, /* special_function */
1601 "R_PPC64_GOT_TLSGD16_LO", /* name */
1602 FALSE, /* partial_inplace */
1604 0xffff, /* dst_mask */
1605 FALSE), /* pcrel_offset */
1607 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1608 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1609 16, /* rightshift */
1610 1, /* size (0 = byte, 1 = short, 2 = long) */
1612 FALSE, /* pc_relative */
1614 complain_overflow_dont, /* complain_on_overflow */
1615 ppc64_elf_unhandled_reloc, /* special_function */
1616 "R_PPC64_GOT_TLSGD16_HI", /* name */
1617 FALSE, /* partial_inplace */
1619 0xffff, /* dst_mask */
1620 FALSE), /* pcrel_offset */
1622 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1623 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1624 16, /* rightshift */
1625 1, /* size (0 = byte, 1 = short, 2 = long) */
1627 FALSE, /* pc_relative */
1629 complain_overflow_dont, /* complain_on_overflow */
1630 ppc64_elf_unhandled_reloc, /* special_function */
1631 "R_PPC64_GOT_TLSGD16_HA", /* name */
1632 FALSE, /* partial_inplace */
1634 0xffff, /* dst_mask */
1635 FALSE), /* pcrel_offset */
1637 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1638 with values (sym+add)@dtpmod and zero, and computes the offset to the
1639 first entry relative to the TOC base (r2). */
1640 HOWTO (R_PPC64_GOT_TLSLD16,
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1644 FALSE, /* pc_relative */
1646 complain_overflow_signed, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_GOT_TLSLD16", /* name */
1649 FALSE, /* partial_inplace */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1654 /* Like GOT_TLSLD16, but no overflow. */
1655 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1659 FALSE, /* pc_relative */
1661 complain_overflow_dont, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_GOT_TLSLD16_LO", /* name */
1664 FALSE, /* partial_inplace */
1666 0xffff, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1669 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1670 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1671 16, /* rightshift */
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1674 FALSE, /* pc_relative */
1676 complain_overflow_dont, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_GOT_TLSLD16_HI", /* name */
1679 FALSE, /* partial_inplace */
1681 0xffff, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1684 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1685 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1686 16, /* rightshift */
1687 1, /* size (0 = byte, 1 = short, 2 = long) */
1689 FALSE, /* pc_relative */
1691 complain_overflow_dont, /* complain_on_overflow */
1692 ppc64_elf_unhandled_reloc, /* special_function */
1693 "R_PPC64_GOT_TLSLD16_HA", /* name */
1694 FALSE, /* partial_inplace */
1696 0xffff, /* dst_mask */
1697 FALSE), /* pcrel_offset */
1699 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1700 the offset to the entry relative to the TOC base (r2). */
1701 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1703 1, /* size (0 = byte, 1 = short, 2 = long) */
1705 FALSE, /* pc_relative */
1707 complain_overflow_signed, /* complain_on_overflow */
1708 ppc64_elf_unhandled_reloc, /* special_function */
1709 "R_PPC64_GOT_DTPREL16_DS", /* name */
1710 FALSE, /* partial_inplace */
1712 0xfffc, /* dst_mask */
1713 FALSE), /* pcrel_offset */
1715 /* Like GOT_DTPREL16_DS, but no overflow. */
1716 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1718 1, /* size (0 = byte, 1 = short, 2 = long) */
1720 FALSE, /* pc_relative */
1722 complain_overflow_dont, /* complain_on_overflow */
1723 ppc64_elf_unhandled_reloc, /* special_function */
1724 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1725 FALSE, /* partial_inplace */
1727 0xfffc, /* dst_mask */
1728 FALSE), /* pcrel_offset */
1730 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1731 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1732 16, /* rightshift */
1733 1, /* size (0 = byte, 1 = short, 2 = long) */
1735 FALSE, /* pc_relative */
1737 complain_overflow_dont, /* complain_on_overflow */
1738 ppc64_elf_unhandled_reloc, /* special_function */
1739 "R_PPC64_GOT_DTPREL16_HI", /* name */
1740 FALSE, /* partial_inplace */
1742 0xffff, /* dst_mask */
1743 FALSE), /* pcrel_offset */
1745 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1746 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1747 16, /* rightshift */
1748 1, /* size (0 = byte, 1 = short, 2 = long) */
1750 FALSE, /* pc_relative */
1752 complain_overflow_dont, /* complain_on_overflow */
1753 ppc64_elf_unhandled_reloc, /* special_function */
1754 "R_PPC64_GOT_DTPREL16_HA", /* name */
1755 FALSE, /* partial_inplace */
1757 0xffff, /* dst_mask */
1758 FALSE), /* pcrel_offset */
1760 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1761 offset to the entry relative to the TOC base (r2). */
1762 HOWTO (R_PPC64_GOT_TPREL16_DS,
1764 1, /* size (0 = byte, 1 = short, 2 = long) */
1766 FALSE, /* pc_relative */
1768 complain_overflow_signed, /* complain_on_overflow */
1769 ppc64_elf_unhandled_reloc, /* special_function */
1770 "R_PPC64_GOT_TPREL16_DS", /* name */
1771 FALSE, /* partial_inplace */
1773 0xfffc, /* dst_mask */
1774 FALSE), /* pcrel_offset */
1776 /* Like GOT_TPREL16_DS, but no overflow. */
1777 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1779 1, /* size (0 = byte, 1 = short, 2 = long) */
1781 FALSE, /* pc_relative */
1783 complain_overflow_dont, /* complain_on_overflow */
1784 ppc64_elf_unhandled_reloc, /* special_function */
1785 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1786 FALSE, /* partial_inplace */
1788 0xfffc, /* dst_mask */
1789 FALSE), /* pcrel_offset */
1791 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1792 HOWTO (R_PPC64_GOT_TPREL16_HI,
1793 16, /* rightshift */
1794 1, /* size (0 = byte, 1 = short, 2 = long) */
1796 FALSE, /* pc_relative */
1798 complain_overflow_dont, /* complain_on_overflow */
1799 ppc64_elf_unhandled_reloc, /* special_function */
1800 "R_PPC64_GOT_TPREL16_HI", /* name */
1801 FALSE, /* partial_inplace */
1803 0xffff, /* dst_mask */
1804 FALSE), /* pcrel_offset */
1806 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1807 HOWTO (R_PPC64_GOT_TPREL16_HA,
1808 16, /* rightshift */
1809 1, /* size (0 = byte, 1 = short, 2 = long) */
1811 FALSE, /* pc_relative */
1813 complain_overflow_dont, /* complain_on_overflow */
1814 ppc64_elf_unhandled_reloc, /* special_function */
1815 "R_PPC64_GOT_TPREL16_HA", /* name */
1816 FALSE, /* partial_inplace */
1818 0xffff, /* dst_mask */
1819 FALSE), /* pcrel_offset */
1821 /* GNU extension to record C++ vtable hierarchy. */
1822 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1824 0, /* size (0 = byte, 1 = short, 2 = long) */
1826 FALSE, /* pc_relative */
1828 complain_overflow_dont, /* complain_on_overflow */
1829 NULL, /* special_function */
1830 "R_PPC64_GNU_VTINHERIT", /* name */
1831 FALSE, /* partial_inplace */
1834 FALSE), /* pcrel_offset */
1836 /* GNU extension to record C++ vtable member usage. */
1837 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1839 0, /* size (0 = byte, 1 = short, 2 = long) */
1841 FALSE, /* pc_relative */
1843 complain_overflow_dont, /* complain_on_overflow */
1844 NULL, /* special_function */
1845 "R_PPC64_GNU_VTENTRY", /* name */
1846 FALSE, /* partial_inplace */
1849 FALSE), /* pcrel_offset */
1853 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1857 ppc_howto_init (void)
1859 unsigned int i, type;
1862 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1865 type = ppc64_elf_howto_raw[i].type;
1866 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1867 / sizeof (ppc64_elf_howto_table[0])));
1868 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1872 static reloc_howto_type *
1873 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1874 bfd_reloc_code_real_type code)
1876 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1878 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1879 /* Initialize howto table if needed. */
1887 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1889 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1891 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1893 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1895 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1897 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1899 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1901 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1903 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1905 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1907 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1909 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1911 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1913 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1915 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1917 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1919 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1921 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1923 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1925 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1927 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1929 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1931 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1933 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1935 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1937 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1939 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1941 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1943 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1945 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1947 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1949 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1951 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1953 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1955 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1957 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1959 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1961 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1963 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1965 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1967 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1969 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1971 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1973 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1975 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1977 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1979 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1981 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1983 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1985 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
1987 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
1989 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
1991 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
1993 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
1995 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
1997 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
1999 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2001 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2003 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2005 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2007 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2009 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2011 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2013 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2015 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2017 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2019 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2021 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2023 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2025 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2027 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2029 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2031 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2033 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2035 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2037 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2039 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2041 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2043 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2045 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2047 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2049 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2051 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2053 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2055 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2057 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2059 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2061 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2063 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2065 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2067 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2069 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2071 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2073 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2075 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2077 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2079 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2081 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2083 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2085 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2087 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2091 return ppc64_elf_howto_table[r];
2094 /* Set the howto pointer for a PowerPC ELF reloc. */
2097 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2098 Elf_Internal_Rela *dst)
2102 /* Initialize howto table if needed. */
2103 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2106 type = ELF64_R_TYPE (dst->r_info);
2107 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2108 / sizeof (ppc64_elf_howto_table[0])));
2109 cache_ptr->howto = ppc64_elf_howto_table[type];
2112 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2114 static bfd_reloc_status_type
2115 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2116 void *data, asection *input_section,
2117 bfd *output_bfd, char **error_message)
2119 /* If this is a relocatable link (output_bfd test tells us), just
2120 call the generic function. Any adjustment will be done at final
2122 if (output_bfd != NULL)
2123 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2124 input_section, output_bfd, error_message);
2126 /* Adjust the addend for sign extension of the low 16 bits.
2127 We won't actually be using the low 16 bits, so trashing them
2129 reloc_entry->addend += 0x8000;
2130 return bfd_reloc_continue;
2133 static bfd_reloc_status_type
2134 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2135 void *data, asection *input_section,
2136 bfd *output_bfd, char **error_message)
2139 enum elf_ppc64_reloc_type r_type;
2140 bfd_size_type octets;
2141 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2142 bfd_boolean is_power4 = FALSE;
2144 /* If this is a relocatable link (output_bfd test tells us), just
2145 call the generic function. Any adjustment will be done at final
2147 if (output_bfd != NULL)
2148 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2149 input_section, output_bfd, error_message);
2151 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2152 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2153 insn &= ~(0x01 << 21);
2154 r_type = reloc_entry->howto->type;
2155 if (r_type == R_PPC64_ADDR14_BRTAKEN
2156 || r_type == R_PPC64_REL14_BRTAKEN)
2157 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2161 /* Set 'a' bit. This is 0b00010 in BO field for branch
2162 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2163 for branch on CTR insns (BO == 1a00t or 1a01t). */
2164 if ((insn & (0x14 << 21)) == (0x04 << 21))
2166 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2169 return bfd_reloc_continue;
2176 if (!bfd_is_com_section (symbol->section))
2177 target = symbol->value;
2178 target += symbol->section->output_section->vma;
2179 target += symbol->section->output_offset;
2180 target += reloc_entry->addend;
2182 from = (reloc_entry->address
2183 + input_section->output_offset
2184 + input_section->output_section->vma);
2186 /* Invert 'y' bit if not the default. */
2187 if ((bfd_signed_vma) (target - from) < 0)
2190 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2191 return bfd_reloc_continue;
2194 static bfd_reloc_status_type
2195 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2196 void *data, asection *input_section,
2197 bfd *output_bfd, char **error_message)
2199 /* If this is a relocatable link (output_bfd test tells us), just
2200 call the generic function. Any adjustment will be done at final
2202 if (output_bfd != NULL)
2203 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2204 input_section, output_bfd, error_message);
2206 /* Subtract the symbol section base address. */
2207 reloc_entry->addend -= symbol->section->output_section->vma;
2208 return bfd_reloc_continue;
2211 static bfd_reloc_status_type
2212 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2213 void *data, asection *input_section,
2214 bfd *output_bfd, char **error_message)
2216 /* If this is a relocatable link (output_bfd test tells us), just
2217 call the generic function. Any adjustment will be done at final
2219 if (output_bfd != NULL)
2220 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2221 input_section, output_bfd, error_message);
2223 /* Subtract the symbol section base address. */
2224 reloc_entry->addend -= symbol->section->output_section->vma;
2226 /* Adjust the addend for sign extension of the low 16 bits. */
2227 reloc_entry->addend += 0x8000;
2228 return bfd_reloc_continue;
2231 static bfd_reloc_status_type
2232 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2233 void *data, asection *input_section,
2234 bfd *output_bfd, char **error_message)
2238 /* If this is a relocatable link (output_bfd test tells us), just
2239 call the generic function. Any adjustment will be done at final
2241 if (output_bfd != NULL)
2242 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2243 input_section, output_bfd, error_message);
2245 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2247 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2249 /* Subtract the TOC base address. */
2250 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2251 return bfd_reloc_continue;
2254 static bfd_reloc_status_type
2255 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2256 void *data, asection *input_section,
2257 bfd *output_bfd, char **error_message)
2261 /* If this is a relocatable link (output_bfd test tells us), just
2262 call the generic function. Any adjustment will be done at final
2264 if (output_bfd != NULL)
2265 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2266 input_section, output_bfd, error_message);
2268 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2270 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2272 /* Subtract the TOC base address. */
2273 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2275 /* Adjust the addend for sign extension of the low 16 bits. */
2276 reloc_entry->addend += 0x8000;
2277 return bfd_reloc_continue;
2280 static bfd_reloc_status_type
2281 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2282 void *data, asection *input_section,
2283 bfd *output_bfd, char **error_message)
2286 bfd_size_type octets;
2288 /* If this is a relocatable link (output_bfd test tells us), just
2289 call the generic function. Any adjustment will be done at final
2291 if (output_bfd != NULL)
2292 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2293 input_section, output_bfd, error_message);
2295 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2297 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2299 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2300 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2301 return bfd_reloc_ok;
2304 static bfd_reloc_status_type
2305 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2306 void *data, asection *input_section,
2307 bfd *output_bfd, char **error_message)
2309 /* If this is a relocatable link (output_bfd test tells us), just
2310 call the generic function. Any adjustment will be done at final
2312 if (output_bfd != NULL)
2313 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2314 input_section, output_bfd, error_message);
2316 if (error_message != NULL)
2318 static char buf[60];
2319 sprintf (buf, "generic linker can't handle %s",
2320 reloc_entry->howto->name);
2321 *error_message = buf;
2323 return bfd_reloc_dangerous;
2326 struct ppc64_elf_obj_tdata
2328 struct elf_obj_tdata elf;
2330 /* Shortcuts to dynamic linker sections. */
2334 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2335 sections means we potentially need one of these for each input bfd. */
2337 bfd_signed_vma refcount;
2342 #define ppc64_elf_tdata(bfd) \
2343 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2345 #define ppc64_tlsld_got(bfd) \
2346 (&ppc64_elf_tdata (bfd)->tlsld_got)
2348 /* Override the generic function because we store some extras. */
2351 ppc64_elf_mkobject (bfd *abfd)
2353 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2354 abfd->tdata.any = bfd_zalloc (abfd, amt);
2355 if (abfd->tdata.any == NULL)
2360 /* Fix bad default arch selected for a 64 bit input bfd when the
2361 default is 32 bit. */
2364 ppc64_elf_object_p (bfd *abfd)
2366 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2368 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2370 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2372 /* Relies on arch after 32 bit default being 64 bit default. */
2373 abfd->arch_info = abfd->arch_info->next;
2374 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2380 /* Support for core dump NOTE sections. */
2383 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2385 size_t offset, raw_size;
2387 if (note->descsz != 504)
2391 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2394 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2400 /* Make a ".reg/999" section. */
2401 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2402 raw_size, note->descpos + offset);
2406 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2408 if (note->descsz != 136)
2411 elf_tdata (abfd)->core_program
2412 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2413 elf_tdata (abfd)->core_command
2414 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2419 /* Merge backend specific data from an object file to the output
2420 object file when linking. */
2423 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2425 /* Check if we have the same endianess. */
2426 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2427 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2428 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2432 if (bfd_big_endian (ibfd))
2433 msg = _("%s: compiled for a big endian system "
2434 "and target is little endian");
2436 msg = _("%s: compiled for a little endian system "
2437 "and target is big endian");
2439 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
2441 bfd_set_error (bfd_error_wrong_format);
2448 /* Add extra PPC sections. */
2450 static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2452 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2453 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2454 { ".plt", 4, 0, SHT_NOBITS, 0 },
2455 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2456 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2457 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2458 { NULL, 0, 0, 0, 0 }
2461 struct _ppc64_elf_section_data
2463 struct bfd_elf_section_data elf;
2465 /* An array with one entry for each opd function descriptor. */
2468 /* Points to the function code section for local opd entries. */
2469 asection **func_sec;
2470 /* After editing .opd, adjust references to opd local syms. */
2474 /* An array for toc sections, indexed by offset/8.
2475 Specifies the relocation symbol index used at a given toc offset. */
2479 #define ppc64_elf_section_data(sec) \
2480 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2483 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2485 struct _ppc64_elf_section_data *sdata;
2486 bfd_size_type amt = sizeof (*sdata);
2488 sdata = bfd_zalloc (abfd, amt);
2491 sec->used_by_bfd = sdata;
2493 return _bfd_elf_new_section_hook (abfd, sec);
2496 /* The following functions are specific to the ELF linker, while
2497 functions above are used generally. Those named ppc64_elf_* are
2498 called by the main ELF linker code. They appear in this file more
2499 or less in the order in which they are called. eg.
2500 ppc64_elf_check_relocs is called early in the link process,
2501 ppc64_elf_finish_dynamic_sections is one of the last functions
2504 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2505 functions have both a function code symbol and a function descriptor
2506 symbol. A call to foo in a relocatable object file looks like:
2513 The function definition in another object file might be:
2517 . .quad .TOC.@tocbase
2523 When the linker resolves the call during a static link, the branch
2524 unsurprisingly just goes to .foo and the .opd information is unused.
2525 If the function definition is in a shared library, things are a little
2526 different: The call goes via a plt call stub, the opd information gets
2527 copied to the plt, and the linker patches the nop.
2535 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2536 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2537 . std 2,40(1) # this is the general idea
2545 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2547 The "reloc ()" notation is supposed to indicate that the linker emits
2548 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2551 What are the difficulties here? Well, firstly, the relocations
2552 examined by the linker in check_relocs are against the function code
2553 sym .foo, while the dynamic relocation in the plt is emitted against
2554 the function descriptor symbol, foo. Somewhere along the line, we need
2555 to carefully copy dynamic link information from one symbol to the other.
2556 Secondly, the generic part of the elf linker will make .foo a dynamic
2557 symbol as is normal for most other backends. We need foo dynamic
2558 instead, at least for an application final link. However, when
2559 creating a shared library containing foo, we need to have both symbols
2560 dynamic so that references to .foo are satisfied during the early
2561 stages of linking. Otherwise the linker might decide to pull in a
2562 definition from some other object, eg. a static library. */
2564 /* The linker needs to keep track of the number of relocs that it
2565 decides to copy as dynamic relocs in check_relocs for each symbol.
2566 This is so that it can later discard them if they are found to be
2567 unnecessary. We store the information in a field extending the
2568 regular ELF linker hash table. */
2570 struct ppc_dyn_relocs
2572 struct ppc_dyn_relocs *next;
2574 /* The input section of the reloc. */
2577 /* Total number of relocs copied for the input section. */
2578 bfd_size_type count;
2580 /* Number of pc-relative relocs copied for the input section. */
2581 bfd_size_type pc_count;
2584 /* Track GOT entries needed for a given symbol. We might need more
2585 than one got entry per symbol. */
2588 struct got_entry *next;
2590 /* The symbol addend that we'll be placing in the GOT. */
2593 /* Unlike other ELF targets, we use separate GOT entries for the same
2594 symbol referenced from different input files. This is to support
2595 automatic multiple TOC/GOT sections, where the TOC base can vary
2596 from one input file to another.
2598 Point to the BFD owning this GOT entry. */
2601 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2602 TLS_TPREL or TLS_DTPREL for tls entries. */
2605 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2608 bfd_signed_vma refcount;
2613 /* The same for PLT. */
2616 struct plt_entry *next;
2622 bfd_signed_vma refcount;
2627 /* Of those relocs that might be copied as dynamic relocs, this macro
2628 selects those that must be copied when linking a shared library,
2629 even when the symbol is local. */
2631 #define MUST_BE_DYN_RELOC(RTYPE) \
2632 ((RTYPE) != R_PPC64_REL32 \
2633 && (RTYPE) != R_PPC64_REL64 \
2634 && (RTYPE) != R_PPC64_REL30)
2636 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2637 copying dynamic variables from a shared lib into an app's dynbss
2638 section, and instead use a dynamic relocation to point into the
2639 shared lib. With code that gcc generates, it's vital that this be
2640 enabled; In the PowerPC64 ABI, the address of a function is actually
2641 the address of a function descriptor, which resides in the .opd
2642 section. gcc uses the descriptor directly rather than going via the
2643 GOT as some other ABI's do, which means that initialized function
2644 pointers must reference the descriptor. Thus, a function pointer
2645 initialized to the address of a function in a shared library will
2646 either require a copy reloc, or a dynamic reloc. Using a copy reloc
2647 redefines the function descriptor symbol to point to the copy. This
2648 presents a problem as a plt entry for that function is also
2649 initialized from the function descriptor symbol and the copy reloc
2650 may not be initialized first. */
2651 #define ELIMINATE_COPY_RELOCS 1
2653 /* Section name for stubs is the associated section name plus this
2655 #define STUB_SUFFIX ".stub"
2658 ppc_stub_long_branch:
2659 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2660 destination, but a 24 bit branch in a stub section will reach.
2663 ppc_stub_plt_branch:
2664 Similar to the above, but a 24 bit branch in the stub section won't
2665 reach its destination.
2666 . addis %r12,%r2,xxx@toc@ha
2667 . ld %r11,xxx@toc@l(%r12)
2672 Used to call a function in a shared library.
2673 . addis %r12,%r2,xxx@toc@ha
2675 . ld %r11,xxx+0@toc@l(%r12)
2676 . ld %r2,xxx+8@toc@l(%r12)
2678 . ld %r11,xxx+16@toc@l(%r12)
2681 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
2682 code to adjust the value and save r2 to support multiple toc sections.
2683 A ppc_stub_long_branch with an r2 offset looks like:
2685 . addis %r2,%r2,off@ha
2686 . addi %r2,%r2,off@l
2689 A ppc_stub_plt_branch with an r2 offset looks like:
2691 . addis %r12,%r2,xxx@toc@ha
2692 . ld %r11,xxx@toc@l(%r12)
2693 . addis %r2,%r2,off@ha
2694 . addi %r2,%r2,off@l
2699 enum ppc_stub_type {
2701 ppc_stub_long_branch,
2702 ppc_stub_long_branch_r2off,
2703 ppc_stub_plt_branch,
2704 ppc_stub_plt_branch_r2off,
2708 struct ppc_stub_hash_entry {
2710 /* Base hash table entry structure. */
2711 struct bfd_hash_entry root;
2713 enum ppc_stub_type stub_type;
2715 /* The stub section. */
2718 /* Offset within stub_sec of the beginning of this stub. */
2719 bfd_vma stub_offset;
2721 /* Given the symbol's value and its section we can determine its final
2722 value when building the stubs (so the stub knows where to jump. */
2723 bfd_vma target_value;
2724 asection *target_section;
2726 /* The symbol table entry, if any, that this was derived from. */
2727 struct ppc_link_hash_entry *h;
2729 /* And the reloc addend that this was derived from. */
2732 /* Where this stub is being called from, or, in the case of combined
2733 stub sections, the first input section in the group. */
2737 struct ppc_branch_hash_entry {
2739 /* Base hash table entry structure. */
2740 struct bfd_hash_entry root;
2742 /* Offset within .branch_lt. */
2743 unsigned int offset;
2745 /* Generation marker. */
2749 struct ppc_link_hash_entry
2751 struct elf_link_hash_entry elf;
2753 /* A pointer to the most recently used stub hash entry against this
2755 struct ppc_stub_hash_entry *stub_cache;
2757 /* Track dynamic relocs copied for this symbol. */
2758 struct ppc_dyn_relocs *dyn_relocs;
2760 /* Link between function code and descriptor symbols. */
2761 struct elf_link_hash_entry *oh;
2763 /* Flag function code and descriptor symbols. */
2764 unsigned int is_func:1;
2765 unsigned int is_func_descriptor:1;
2766 unsigned int is_entry:1;
2768 /* Whether global opd sym has been adjusted or not. */
2769 unsigned int adjust_done:1;
2771 /* Contexts in which symbol is used in the GOT (or TOC).
2772 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2773 corresponding relocs are encountered during check_relocs.
2774 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2775 indicate the corresponding GOT entry type is not needed.
2776 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2777 a TPREL one. We use a separate flag rather than setting TPREL
2778 just for convenience in distinguishing the two cases. */
2779 #define TLS_GD 1 /* GD reloc. */
2780 #define TLS_LD 2 /* LD reloc. */
2781 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2782 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2783 #define TLS_TLS 16 /* Any TLS reloc. */
2784 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2785 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2789 /* ppc64 ELF linker hash table. */
2791 struct ppc_link_hash_table
2793 struct elf_link_hash_table elf;
2795 /* The stub hash table. */
2796 struct bfd_hash_table stub_hash_table;
2798 /* Another hash table for plt_branch stubs. */
2799 struct bfd_hash_table branch_hash_table;
2801 /* Linker stub bfd. */
2804 /* Linker call-backs. */
2805 asection * (*add_stub_section) (const char *, asection *);
2806 void (*layout_sections_again) (void);
2808 /* Array to keep track of which stub sections have been created, and
2809 information on stub grouping. */
2811 /* This is the section to which stubs in the group will be attached. */
2813 /* The stub section. */
2815 /* Along with elf_gp, specifies the TOC pointer used in this group. */
2819 /* Support for multiple toc sections. */
2820 unsigned int no_multi_toc;
2821 unsigned int multi_toc_needed;
2823 /* Temp used when calculating TOC pointers. */
2826 /* Highest input section id. */
2829 /* Highest output section index. */
2832 /* List of input sections for each output section. */
2833 asection **input_list;
2835 /* Short-cuts to get to dynamic linker sections. */
2846 /* Shortcut to .__tls_get_addr. */
2847 struct elf_link_hash_entry *tls_get_addr;
2850 unsigned long stub_count[ppc_stub_plt_call];
2852 /* Set if we should emit symbols for stubs. */
2853 unsigned int emit_stub_syms;
2856 unsigned int stub_error;
2858 /* Flag set when small branches are detected. Used to
2859 select suitable defaults for the stub group size. */
2860 unsigned int has_14bit_branch;
2862 /* Set if we detect a reference undefined weak symbol. */
2863 unsigned int have_undefweak;
2865 /* Incremented every time we size stubs. */
2866 unsigned int stub_iteration;
2868 /* Small local sym to section mapping cache. */
2869 struct sym_sec_cache sym_sec;
2872 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2874 #define ppc_hash_table(p) \
2875 ((struct ppc_link_hash_table *) ((p)->hash))
2877 #define ppc_stub_hash_lookup(table, string, create, copy) \
2878 ((struct ppc_stub_hash_entry *) \
2879 bfd_hash_lookup ((table), (string), (create), (copy)))
2881 #define ppc_branch_hash_lookup(table, string, create, copy) \
2882 ((struct ppc_branch_hash_entry *) \
2883 bfd_hash_lookup ((table), (string), (create), (copy)))
2885 /* Create an entry in the stub hash table. */
2887 static struct bfd_hash_entry *
2888 stub_hash_newfunc (struct bfd_hash_entry *entry,
2889 struct bfd_hash_table *table,
2892 /* Allocate the structure if it has not already been allocated by a
2896 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2901 /* Call the allocation method of the superclass. */
2902 entry = bfd_hash_newfunc (entry, table, string);
2905 struct ppc_stub_hash_entry *eh;
2907 /* Initialize the local fields. */
2908 eh = (struct ppc_stub_hash_entry *) entry;
2909 eh->stub_type = ppc_stub_none;
2910 eh->stub_sec = NULL;
2911 eh->stub_offset = 0;
2912 eh->target_value = 0;
2913 eh->target_section = NULL;
2921 /* Create an entry in the branch hash table. */
2923 static struct bfd_hash_entry *
2924 branch_hash_newfunc (struct bfd_hash_entry *entry,
2925 struct bfd_hash_table *table,
2928 /* Allocate the structure if it has not already been allocated by a
2932 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2937 /* Call the allocation method of the superclass. */
2938 entry = bfd_hash_newfunc (entry, table, string);
2941 struct ppc_branch_hash_entry *eh;
2943 /* Initialize the local fields. */
2944 eh = (struct ppc_branch_hash_entry *) entry;
2952 /* Create an entry in a ppc64 ELF linker hash table. */
2954 static struct bfd_hash_entry *
2955 link_hash_newfunc (struct bfd_hash_entry *entry,
2956 struct bfd_hash_table *table,
2959 /* Allocate the structure if it has not already been allocated by a
2963 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2968 /* Call the allocation method of the superclass. */
2969 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2972 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2974 eh->stub_cache = NULL;
2975 eh->dyn_relocs = NULL;
2978 eh->is_func_descriptor = 0;
2980 eh->adjust_done = 0;
2987 /* Create a ppc64 ELF linker hash table. */
2989 static struct bfd_link_hash_table *
2990 ppc64_elf_link_hash_table_create (bfd *abfd)
2992 struct ppc_link_hash_table *htab;
2993 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
2995 htab = bfd_zmalloc (amt);
2999 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3005 /* Init the stub hash table too. */
3006 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3009 /* And the branch hash table. */
3010 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3013 /* Initializing two fields of the union is just cosmetic. We really
3014 only care about glist, but when compiled on a 32-bit host the
3015 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3016 debugger inspection of these fields look nicer. */
3017 htab->elf.init_refcount.refcount = 0;
3018 htab->elf.init_refcount.glist = NULL;
3019 htab->elf.init_offset.offset = 0;
3020 htab->elf.init_offset.glist = NULL;
3022 return &htab->elf.root;
3025 /* Free the derived linker hash table. */
3028 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3030 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3032 bfd_hash_table_free (&ret->stub_hash_table);
3033 bfd_hash_table_free (&ret->branch_hash_table);
3034 _bfd_generic_link_hash_table_free (hash);
3037 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3040 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3042 struct ppc_link_hash_table *htab;
3044 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3046 /* Always hook our dynamic sections into the first bfd, which is the
3047 linker created stub bfd. This ensures that the GOT header is at
3048 the start of the output TOC section. */
3049 htab = ppc_hash_table (info);
3050 htab->stub_bfd = abfd;
3051 htab->elf.dynobj = abfd;
3054 /* Build a name for an entry in the stub hash table. */
3057 ppc_stub_name (const asection *input_section,
3058 const asection *sym_sec,
3059 const struct ppc_link_hash_entry *h,
3060 const Elf_Internal_Rela *rel)
3065 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3066 offsets from a sym as a branch target? In fact, we could
3067 probably assume the addend is always zero. */
3068 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3072 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3073 stub_name = bfd_malloc (len);
3074 if (stub_name != NULL)
3076 sprintf (stub_name, "%08x.%s+%x",
3077 input_section->id & 0xffffffff,
3078 h->elf.root.root.string,
3079 (int) rel->r_addend & 0xffffffff);
3084 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3085 stub_name = bfd_malloc (len);
3086 if (stub_name != NULL)
3088 sprintf (stub_name, "%08x.%x:%x+%x",
3089 input_section->id & 0xffffffff,
3090 sym_sec->id & 0xffffffff,
3091 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3092 (int) rel->r_addend & 0xffffffff);
3098 /* Look up an entry in the stub hash. Stub entries are cached because
3099 creating the stub name takes a bit of time. */
3101 static struct ppc_stub_hash_entry *
3102 ppc_get_stub_entry (const asection *input_section,
3103 const asection *sym_sec,
3104 struct elf_link_hash_entry *hash,
3105 const Elf_Internal_Rela *rel,
3106 struct ppc_link_hash_table *htab)
3108 struct ppc_stub_hash_entry *stub_entry;
3109 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
3110 const asection *id_sec;
3112 /* If this input section is part of a group of sections sharing one
3113 stub section, then use the id of the first section in the group.
3114 Stub names need to include a section id, as there may well be
3115 more than one stub used to reach say, printf, and we need to
3116 distinguish between them. */
3117 id_sec = htab->stub_group[input_section->id].link_sec;
3119 if (h != NULL && h->stub_cache != NULL
3120 && h->stub_cache->h == h
3121 && h->stub_cache->id_sec == id_sec)
3123 stub_entry = h->stub_cache;
3129 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3130 if (stub_name == NULL)
3133 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3134 stub_name, FALSE, FALSE);
3136 h->stub_cache = stub_entry;
3144 /* Add a new stub entry to the stub hash. Not all fields of the new
3145 stub entry are initialised. */
3147 static struct ppc_stub_hash_entry *
3148 ppc_add_stub (const char *stub_name,
3150 struct ppc_link_hash_table *htab)
3154 struct ppc_stub_hash_entry *stub_entry;
3156 link_sec = htab->stub_group[section->id].link_sec;
3157 stub_sec = htab->stub_group[section->id].stub_sec;
3158 if (stub_sec == NULL)
3160 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3161 if (stub_sec == NULL)
3167 namelen = strlen (link_sec->name);
3168 len = namelen + sizeof (STUB_SUFFIX);
3169 s_name = bfd_alloc (htab->stub_bfd, len);
3173 memcpy (s_name, link_sec->name, namelen);
3174 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3175 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3176 if (stub_sec == NULL)
3178 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3180 htab->stub_group[section->id].stub_sec = stub_sec;
3183 /* Enter this entry into the linker stub hash table. */
3184 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3186 if (stub_entry == NULL)
3188 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3189 bfd_archive_filename (section->owner),
3194 stub_entry->stub_sec = stub_sec;
3195 stub_entry->stub_offset = 0;
3196 stub_entry->id_sec = link_sec;
3200 /* Create sections for linker generated code. */
3203 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3205 struct ppc_link_hash_table *htab;
3208 htab = ppc_hash_table (info);
3210 /* Create .sfpr for code to save and restore fp regs. */
3211 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3212 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3213 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3214 if (htab->sfpr == NULL
3215 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3216 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3219 /* Create .glink for lazy dynamic linking support. */
3220 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3221 if (htab->glink == NULL
3222 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3223 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3226 /* Create .branch_lt for plt_branch stubs. */
3227 flags = (SEC_ALLOC | SEC_LOAD
3228 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3229 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3230 if (htab->brlt == NULL
3231 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3232 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3237 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3238 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3239 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3241 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3242 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3248 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3249 not already done. */
3252 create_got_section (bfd *abfd, struct bfd_link_info *info)
3254 asection *got, *relgot;
3256 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3260 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3263 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3268 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3269 | SEC_LINKER_CREATED);
3271 got = bfd_make_section (abfd, ".got");
3273 || !bfd_set_section_flags (abfd, got, flags)
3274 || !bfd_set_section_alignment (abfd, got, 3))
3277 relgot = bfd_make_section (abfd, ".rela.got");
3279 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3280 || ! bfd_set_section_alignment (abfd, relgot, 3))
3283 ppc64_elf_tdata (abfd)->got = got;
3284 ppc64_elf_tdata (abfd)->relgot = relgot;
3288 /* Create the dynamic sections, and set up shortcuts. */
3291 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3293 struct ppc_link_hash_table *htab;
3295 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3298 htab = ppc_hash_table (info);
3300 htab->got = bfd_get_section_by_name (dynobj, ".got");
3301 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3302 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3303 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3305 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3307 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3308 || (!info->shared && !htab->relbss))
3314 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3317 ppc64_elf_copy_indirect_symbol
3318 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3319 struct elf_link_hash_entry *dir,
3320 struct elf_link_hash_entry *ind)
3322 struct ppc_link_hash_entry *edir, *eind;
3325 edir = (struct ppc_link_hash_entry *) dir;
3326 eind = (struct ppc_link_hash_entry *) ind;
3328 /* Copy over any dynamic relocs we may have on the indirect sym. */
3329 if (eind->dyn_relocs != NULL)
3331 if (edir->dyn_relocs != NULL)
3333 struct ppc_dyn_relocs **pp;
3334 struct ppc_dyn_relocs *p;
3336 if (eind->elf.root.type == bfd_link_hash_indirect)
3339 /* Add reloc counts against the weak sym to the strong sym
3340 list. Merge any entries against the same section. */
3341 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3343 struct ppc_dyn_relocs *q;
3345 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3346 if (q->sec == p->sec)
3348 q->pc_count += p->pc_count;
3349 q->count += p->count;
3356 *pp = edir->dyn_relocs;
3359 edir->dyn_relocs = eind->dyn_relocs;
3360 eind->dyn_relocs = NULL;
3363 edir->is_func |= eind->is_func;
3364 edir->is_func_descriptor |= eind->is_func_descriptor;
3365 edir->is_entry |= eind->is_entry;
3366 edir->tls_mask |= eind->tls_mask;
3368 mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR
3369 | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF
3370 | ELF_LINK_HASH_NEEDS_PLT);
3371 /* If called to transfer flags for a weakdef during processing
3372 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3373 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3374 if (ELIMINATE_COPY_RELOCS
3375 && eind->elf.root.type != bfd_link_hash_indirect
3376 && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
3377 mask &= ~ELF_LINK_NON_GOT_REF;
3379 edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask;
3381 /* If we were called to copy over info for a weak sym, that's all. */
3382 if (eind->elf.root.type != bfd_link_hash_indirect)
3385 /* Copy over got entries that we may have already seen to the
3386 symbol which just became indirect. */
3387 if (eind->elf.got.glist != NULL)
3389 if (edir->elf.got.glist != NULL)
3391 struct got_entry **entp;
3392 struct got_entry *ent;
3394 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3396 struct got_entry *dent;
3398 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3399 if (dent->addend == ent->addend
3400 && dent->owner == ent->owner
3401 && dent->tls_type == ent->tls_type)
3403 dent->got.refcount += ent->got.refcount;
3410 *entp = edir->elf.got.glist;
3413 edir->elf.got.glist = eind->elf.got.glist;
3414 eind->elf.got.glist = NULL;
3417 /* And plt entries. */
3418 if (eind->elf.plt.plist != NULL)
3420 if (edir->elf.plt.plist != NULL)
3422 struct plt_entry **entp;
3423 struct plt_entry *ent;
3425 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3427 struct plt_entry *dent;
3429 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3430 if (dent->addend == ent->addend)
3432 dent->plt.refcount += ent->plt.refcount;
3439 *entp = edir->elf.plt.plist;
3442 edir->elf.plt.plist = eind->elf.plt.plist;
3443 eind->elf.plt.plist = NULL;
3446 if (edir->elf.dynindx == -1)
3448 edir->elf.dynindx = eind->elf.dynindx;
3449 edir->elf.dynstr_index = eind->elf.dynstr_index;
3450 eind->elf.dynindx = -1;
3451 eind->elf.dynstr_index = 0;
3454 BFD_ASSERT (eind->elf.dynindx == -1);
3457 /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
3458 symbols undefined on the command-line. */
3461 ppc64_elf_mark_entry_syms (struct bfd_link_info *info)
3463 struct ppc_link_hash_table *htab;
3464 struct bfd_sym_chain *sym;
3466 htab = ppc_hash_table (info);
3467 for (sym = info->gc_sym_list; sym; sym = sym->next)
3469 struct elf_link_hash_entry *h;
3471 h = elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
3473 ((struct ppc_link_hash_entry *) h)->is_entry = 1;
3478 /* Hack symbols defined in .opd sections to be function type. */
3481 ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
3482 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3483 Elf_Internal_Sym *isym,
3484 const char **name ATTRIBUTE_UNUSED,
3485 flagword *flags ATTRIBUTE_UNUSED,
3487 bfd_vma *value ATTRIBUTE_UNUSED)
3489 if (strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
3490 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
3495 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
3496 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
3498 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
3499 char *local_got_tls_masks;
3501 if (local_got_ents == NULL)
3503 bfd_size_type size = symtab_hdr->sh_info;
3505 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
3506 local_got_ents = bfd_zalloc (abfd, size);
3507 if (local_got_ents == NULL)
3509 elf_local_got_ents (abfd) = local_got_ents;
3512 if ((tls_type & TLS_EXPLICIT) == 0)
3514 struct got_entry *ent;
3516 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
3517 if (ent->addend == r_addend
3518 && ent->owner == abfd
3519 && ent->tls_type == tls_type)
3523 bfd_size_type amt = sizeof (*ent);
3524 ent = bfd_alloc (abfd, amt);
3527 ent->next = local_got_ents[r_symndx];
3528 ent->addend = r_addend;
3530 ent->tls_type = tls_type;
3531 ent->got.refcount = 0;
3532 local_got_ents[r_symndx] = ent;
3534 ent->got.refcount += 1;
3537 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
3538 local_got_tls_masks[r_symndx] |= tls_type;
3543 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
3545 struct plt_entry *ent;
3547 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
3548 if (ent->addend == addend)
3552 bfd_size_type amt = sizeof (*ent);
3553 ent = bfd_alloc (abfd, amt);
3556 ent->next = eh->elf.plt.plist;
3557 ent->addend = addend;
3558 ent->plt.refcount = 0;
3559 eh->elf.plt.plist = ent;
3561 ent->plt.refcount += 1;
3562 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3567 /* Find the function descriptor hash entry from the given function code
3568 hash entry FH. Link the entries via their OH fields. */
3569 static struct ppc_link_hash_entry *
3570 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3572 struct ppc_link_hash_entry *fdh = (struct ppc_link_hash_entry *) fh->oh;
3576 const char *fd_name = fh->elf.root.root.string + 1;
3578 fdh = (struct ppc_link_hash_entry *)
3579 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3582 fdh->is_func_descriptor = 1;
3592 /* Look through the relocs for a section during the first phase, and
3593 calculate needed space in the global offset table, procedure
3594 linkage table, and dynamic reloc sections. */
3597 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
3598 asection *sec, const Elf_Internal_Rela *relocs)
3600 struct ppc_link_hash_table *htab;
3601 Elf_Internal_Shdr *symtab_hdr;
3602 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3603 const Elf_Internal_Rela *rel;
3604 const Elf_Internal_Rela *rel_end;
3606 asection **opd_sym_map;
3608 if (info->relocatable)
3611 /* Don't do anything special with non-loaded, non-alloced sections.
3612 In particular, any relocs in such sections should not affect GOT
3613 and PLT reference counting (ie. we don't allow them to create GOT
3614 or PLT entries), there's no possibility or desire to optimize TLS
3615 relocs, and there's not much point in propagating relocs to shared
3616 libs that the dynamic linker won't relocate. */
3617 if ((sec->flags & SEC_ALLOC) == 0)
3620 htab = ppc_hash_table (info);
3621 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3623 sym_hashes = elf_sym_hashes (abfd);
3624 sym_hashes_end = (sym_hashes
3625 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
3626 - symtab_hdr->sh_info);
3630 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
3632 /* Garbage collection needs some extra help with .opd sections.
3633 We don't want to necessarily keep everything referenced by
3634 relocs in .opd, as that would keep all functions. Instead,
3635 if we reference an .opd symbol (a function descriptor), we
3636 want to keep the function code symbol's section. This is
3637 easy for global symbols, but for local syms we need to keep
3638 information about the associated function section. Later, if
3639 edit_opd deletes entries, we'll use this array to adjust
3640 local syms in .opd. */
3642 asection *func_section;
3647 amt = sec->_raw_size * sizeof (union opd_info) / 24;
3648 opd_sym_map = bfd_zalloc (abfd, amt);
3649 if (opd_sym_map == NULL)
3651 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
3654 if (htab->sfpr == NULL
3655 && !create_linkage_sections (htab->elf.dynobj, info))
3658 rel_end = relocs + sec->reloc_count;
3659 for (rel = relocs; rel < rel_end; rel++)
3661 unsigned long r_symndx;
3662 struct elf_link_hash_entry *h;
3663 enum elf_ppc64_reloc_type r_type;
3666 r_symndx = ELF64_R_SYM (rel->r_info);
3667 if (r_symndx < symtab_hdr->sh_info)
3670 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3672 r_type = ELF64_R_TYPE (rel->r_info);
3675 case R_PPC64_GOT_TLSLD16:
3676 case R_PPC64_GOT_TLSLD16_LO:
3677 case R_PPC64_GOT_TLSLD16_HI:
3678 case R_PPC64_GOT_TLSLD16_HA:
3679 ppc64_tlsld_got (abfd)->refcount += 1;
3680 tls_type = TLS_TLS | TLS_LD;
3683 case R_PPC64_GOT_TLSGD16:
3684 case R_PPC64_GOT_TLSGD16_LO:
3685 case R_PPC64_GOT_TLSGD16_HI:
3686 case R_PPC64_GOT_TLSGD16_HA:
3687 tls_type = TLS_TLS | TLS_GD;
3690 case R_PPC64_GOT_TPREL16_DS:
3691 case R_PPC64_GOT_TPREL16_LO_DS:
3692 case R_PPC64_GOT_TPREL16_HI:
3693 case R_PPC64_GOT_TPREL16_HA:
3695 info->flags |= DF_STATIC_TLS;
3696 tls_type = TLS_TLS | TLS_TPREL;
3699 case R_PPC64_GOT_DTPREL16_DS:
3700 case R_PPC64_GOT_DTPREL16_LO_DS:
3701 case R_PPC64_GOT_DTPREL16_HI:
3702 case R_PPC64_GOT_DTPREL16_HA:
3703 tls_type = TLS_TLS | TLS_DTPREL;
3705 sec->has_tls_reloc = 1;
3709 case R_PPC64_GOT16_DS:
3710 case R_PPC64_GOT16_HA:
3711 case R_PPC64_GOT16_HI:
3712 case R_PPC64_GOT16_LO:
3713 case R_PPC64_GOT16_LO_DS:
3714 /* This symbol requires a global offset table entry. */
3715 sec->has_gp_reloc = 1;
3716 if (ppc64_elf_tdata (abfd)->got == NULL
3717 && !create_got_section (abfd, info))
3722 struct ppc_link_hash_entry *eh;
3723 struct got_entry *ent;
3725 eh = (struct ppc_link_hash_entry *) h;
3726 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
3727 if (ent->addend == rel->r_addend
3728 && ent->owner == abfd
3729 && ent->tls_type == tls_type)
3733 bfd_size_type amt = sizeof (*ent);
3734 ent = bfd_alloc (abfd, amt);
3737 ent->next = eh->elf.got.glist;
3738 ent->addend = rel->r_addend;
3740 ent->tls_type = tls_type;
3741 ent->got.refcount = 0;
3742 eh->elf.got.glist = ent;
3744 ent->got.refcount += 1;
3745 eh->tls_mask |= tls_type;
3748 /* This is a global offset table entry for a local symbol. */
3749 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3750 rel->r_addend, tls_type))
3754 case R_PPC64_PLT16_HA:
3755 case R_PPC64_PLT16_HI:
3756 case R_PPC64_PLT16_LO:
3759 /* This symbol requires a procedure linkage table entry. We
3760 actually build the entry in adjust_dynamic_symbol,
3761 because this might be a case of linking PIC code without
3762 linking in any dynamic objects, in which case we don't
3763 need to generate a procedure linkage table after all. */
3766 /* It does not make sense to have a procedure linkage
3767 table entry for a local symbol. */
3768 bfd_set_error (bfd_error_bad_value);
3772 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3777 /* The following relocations don't need to propagate the
3778 relocation if linking a shared object since they are
3779 section relative. */
3780 case R_PPC64_SECTOFF:
3781 case R_PPC64_SECTOFF_LO:
3782 case R_PPC64_SECTOFF_HI:
3783 case R_PPC64_SECTOFF_HA:
3784 case R_PPC64_SECTOFF_DS:
3785 case R_PPC64_SECTOFF_LO_DS:
3786 case R_PPC64_DTPREL16:
3787 case R_PPC64_DTPREL16_LO:
3788 case R_PPC64_DTPREL16_HI:
3789 case R_PPC64_DTPREL16_HA:
3790 case R_PPC64_DTPREL16_DS:
3791 case R_PPC64_DTPREL16_LO_DS:
3792 case R_PPC64_DTPREL16_HIGHER:
3793 case R_PPC64_DTPREL16_HIGHERA:
3794 case R_PPC64_DTPREL16_HIGHEST:
3795 case R_PPC64_DTPREL16_HIGHESTA:
3800 case R_PPC64_TOC16_LO:
3801 case R_PPC64_TOC16_HI:
3802 case R_PPC64_TOC16_HA:
3803 case R_PPC64_TOC16_DS:
3804 case R_PPC64_TOC16_LO_DS:
3805 sec->has_gp_reloc = 1;
3808 /* This relocation describes the C++ object vtable hierarchy.
3809 Reconstruct it for later use during GC. */
3810 case R_PPC64_GNU_VTINHERIT:
3811 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3815 /* This relocation describes which C++ vtable entries are actually
3816 used. Record for later use during GC. */
3817 case R_PPC64_GNU_VTENTRY:
3818 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3823 case R_PPC64_REL14_BRTAKEN:
3824 case R_PPC64_REL14_BRNTAKEN:
3825 htab->has_14bit_branch = 1;
3830 && h->root.root.string[0] == '.'
3831 && h->root.root.string[1] != 0)
3833 /* We may need a .plt entry if the function this reloc
3834 refers to is in a shared lib. */
3835 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3838 if (h == htab->tls_get_addr)
3839 sec->has_tls_reloc = 1;
3840 else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15)
3842 && (h->root.root.string[15] == 0
3843 || h->root.root.string[15] == '@'))
3845 htab->tls_get_addr = h;
3846 sec->has_tls_reloc = 1;
3851 case R_PPC64_TPREL64:
3852 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
3854 info->flags |= DF_STATIC_TLS;
3857 case R_PPC64_DTPMOD64:
3858 if (rel + 1 < rel_end
3859 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
3860 && rel[1].r_offset == rel->r_offset + 8)
3861 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
3863 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
3866 case R_PPC64_DTPREL64:
3867 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
3869 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
3870 && rel[-1].r_offset == rel->r_offset - 8)
3871 /* This is the second reloc of a dtpmod, dtprel pair.
3872 Don't mark with TLS_DTPREL. */
3876 sec->has_tls_reloc = 1;
3879 struct ppc_link_hash_entry *eh;
3880 eh = (struct ppc_link_hash_entry *) h;
3881 eh->tls_mask |= tls_type;
3884 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3885 rel->r_addend, tls_type))
3888 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3890 /* One extra to simplify get_tls_mask. */
3891 bfd_size_type amt = sec->_raw_size * sizeof (unsigned) / 8 + 1;
3892 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
3893 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3896 BFD_ASSERT (rel->r_offset % 8 == 0);
3897 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
3899 /* Mark the second slot of a GD or LD entry.
3900 -1 to indicate GD and -2 to indicate LD. */
3901 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3902 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
3903 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3904 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
3907 case R_PPC64_TPREL16:
3908 case R_PPC64_TPREL16_LO:
3909 case R_PPC64_TPREL16_HI:
3910 case R_PPC64_TPREL16_HA:
3911 case R_PPC64_TPREL16_DS:
3912 case R_PPC64_TPREL16_LO_DS:
3913 case R_PPC64_TPREL16_HIGHER:
3914 case R_PPC64_TPREL16_HIGHERA:
3915 case R_PPC64_TPREL16_HIGHEST:
3916 case R_PPC64_TPREL16_HIGHESTA:
3919 info->flags |= DF_STATIC_TLS;
3924 case R_PPC64_ADDR64:
3925 if (opd_sym_map != NULL
3927 && h->root.root.string[0] == '.'
3928 && h->root.root.string[1] != 0)
3929 get_fdh ((struct ppc_link_hash_entry *) h, htab);
3931 if (opd_sym_map != NULL
3933 && rel + 1 < rel_end
3934 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
3938 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3943 opd_sym_map[rel->r_offset / 24] = s;
3950 case R_PPC64_ADDR14:
3951 case R_PPC64_ADDR14_BRNTAKEN:
3952 case R_PPC64_ADDR14_BRTAKEN:
3953 case R_PPC64_ADDR16:
3954 case R_PPC64_ADDR16_DS:
3955 case R_PPC64_ADDR16_HA:
3956 case R_PPC64_ADDR16_HI:
3957 case R_PPC64_ADDR16_HIGHER:
3958 case R_PPC64_ADDR16_HIGHERA:
3959 case R_PPC64_ADDR16_HIGHEST:
3960 case R_PPC64_ADDR16_HIGHESTA:
3961 case R_PPC64_ADDR16_LO:
3962 case R_PPC64_ADDR16_LO_DS:
3963 case R_PPC64_ADDR24:
3964 case R_PPC64_ADDR32:
3965 case R_PPC64_UADDR16:
3966 case R_PPC64_UADDR32:
3967 case R_PPC64_UADDR64:
3969 if (h != NULL && !info->shared)
3970 /* We may need a copy reloc. */
3971 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
3973 /* Don't propagate .opd relocs. */
3974 if (NO_OPD_RELOCS && opd_sym_map != NULL)
3977 /* If we are creating a shared library, and this is a reloc
3978 against a global symbol, or a non PC relative reloc
3979 against a local symbol, then we need to copy the reloc
3980 into the shared library. However, if we are linking with
3981 -Bsymbolic, we do not need to copy a reloc against a
3982 global symbol which is defined in an object we are
3983 including in the link (i.e., DEF_REGULAR is set). At
3984 this point we have not seen all the input files, so it is
3985 possible that DEF_REGULAR is not set now but will be set
3986 later (it is never cleared). In case of a weak definition,
3987 DEF_REGULAR may be cleared later by a strong definition in
3988 a shared library. We account for that possibility below by
3989 storing information in the dyn_relocs field of the hash
3990 table entry. A similar situation occurs when creating
3991 shared libraries and symbol visibility changes render the
3994 If on the other hand, we are creating an executable, we
3995 may need to keep relocations for symbols satisfied by a
3996 dynamic library if we manage to avoid copy relocs for the
4000 && (MUST_BE_DYN_RELOC (r_type)
4002 && (! info->symbolic
4003 || h->root.type == bfd_link_hash_defweak
4004 || (h->elf_link_hash_flags
4005 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
4006 || (ELIMINATE_COPY_RELOCS
4009 && (h->root.type == bfd_link_hash_defweak
4010 || (h->elf_link_hash_flags
4011 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
4013 struct ppc_dyn_relocs *p;
4014 struct ppc_dyn_relocs **head;
4016 /* We must copy these reloc types into the output file.
4017 Create a reloc section in dynobj and make room for
4024 name = (bfd_elf_string_from_elf_section
4026 elf_elfheader (abfd)->e_shstrndx,
4027 elf_section_data (sec)->rel_hdr.sh_name));
4031 if (strncmp (name, ".rela", 5) != 0
4032 || strcmp (bfd_get_section_name (abfd, sec),
4035 (*_bfd_error_handler)
4036 (_("%s: bad relocation section name `%s\'"),
4037 bfd_archive_filename (abfd), name);
4038 bfd_set_error (bfd_error_bad_value);
4041 dynobj = htab->elf.dynobj;
4042 sreloc = bfd_get_section_by_name (dynobj, name);
4047 sreloc = bfd_make_section (dynobj, name);
4048 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4049 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4050 if ((sec->flags & SEC_ALLOC) != 0)
4051 flags |= SEC_ALLOC | SEC_LOAD;
4053 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4054 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4057 elf_section_data (sec)->sreloc = sreloc;
4060 /* If this is a global symbol, we count the number of
4061 relocations we need for this symbol. */
4064 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4068 /* Track dynamic relocs needed for local syms too.
4069 We really need local syms available to do this
4073 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4078 head = ((struct ppc_dyn_relocs **)
4079 &elf_section_data (s)->local_dynrel);
4083 if (p == NULL || p->sec != sec)
4085 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4096 if (!MUST_BE_DYN_RELOC (r_type))
4109 /* Return the section that should be marked against GC for a given
4113 ppc64_elf_gc_mark_hook (asection *sec,
4114 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4115 Elf_Internal_Rela *rel,
4116 struct elf_link_hash_entry *h,
4117 Elf_Internal_Sym *sym)
4119 asection *rsec = NULL;
4123 enum elf_ppc64_reloc_type r_type;
4124 struct ppc_link_hash_entry *fdh;
4126 r_type = ELF64_R_TYPE (rel->r_info);
4129 case R_PPC64_GNU_VTINHERIT:
4130 case R_PPC64_GNU_VTENTRY:
4134 switch (h->root.type)
4136 case bfd_link_hash_defined:
4137 case bfd_link_hash_defweak:
4138 fdh = (struct ppc_link_hash_entry *) h;
4140 /* Function descriptor syms cause the associated
4141 function code sym section to be marked. */
4142 if (fdh->is_func_descriptor)
4143 rsec = fdh->oh->root.u.def.section;
4145 /* Function entry syms return NULL if they are in .opd
4146 and are not ._start (or others undefined on the ld
4147 command line). Thus we avoid marking all function
4148 sections, as all functions are referenced in .opd. */
4149 else if ((fdh->oh != NULL
4150 && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
4151 || ppc64_elf_section_data (sec)->opd.func_sec == NULL)
4152 rsec = h->root.u.def.section;
4155 case bfd_link_hash_common:
4156 rsec = h->root.u.c.p->section;
4166 asection **opd_sym_section;
4168 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4169 opd_sym_section = ppc64_elf_section_data (rsec)->opd.func_sec;
4170 if (opd_sym_section != NULL)
4171 rsec = opd_sym_section[sym->st_value / 24];
4172 else if (ppc64_elf_section_data (sec)->opd.func_sec != NULL)
4179 /* Update the .got, .plt. and dynamic reloc reference counts for the
4180 section being removed. */
4183 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4184 asection *sec, const Elf_Internal_Rela *relocs)
4186 struct ppc_link_hash_table *htab;
4187 Elf_Internal_Shdr *symtab_hdr;
4188 struct elf_link_hash_entry **sym_hashes;
4189 struct got_entry **local_got_ents;
4190 const Elf_Internal_Rela *rel, *relend;
4192 if ((sec->flags & SEC_ALLOC) == 0)
4195 elf_section_data (sec)->local_dynrel = NULL;
4197 htab = ppc_hash_table (info);
4198 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4199 sym_hashes = elf_sym_hashes (abfd);
4200 local_got_ents = elf_local_got_ents (abfd);
4202 relend = relocs + sec->reloc_count;
4203 for (rel = relocs; rel < relend; rel++)
4205 unsigned long r_symndx;
4206 enum elf_ppc64_reloc_type r_type;
4207 struct elf_link_hash_entry *h = NULL;
4210 r_symndx = ELF64_R_SYM (rel->r_info);
4211 r_type = ELF64_R_TYPE (rel->r_info);
4212 if (r_symndx >= symtab_hdr->sh_info)
4214 struct ppc_link_hash_entry *eh;
4215 struct ppc_dyn_relocs **pp;
4216 struct ppc_dyn_relocs *p;
4218 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4219 eh = (struct ppc_link_hash_entry *) h;
4221 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4224 /* Everything must go for SEC. */
4232 case R_PPC64_GOT_TLSLD16:
4233 case R_PPC64_GOT_TLSLD16_LO:
4234 case R_PPC64_GOT_TLSLD16_HI:
4235 case R_PPC64_GOT_TLSLD16_HA:
4236 ppc64_tlsld_got (abfd)->refcount -= 1;
4237 tls_type = TLS_TLS | TLS_LD;
4240 case R_PPC64_GOT_TLSGD16:
4241 case R_PPC64_GOT_TLSGD16_LO:
4242 case R_PPC64_GOT_TLSGD16_HI:
4243 case R_PPC64_GOT_TLSGD16_HA:
4244 tls_type = TLS_TLS | TLS_GD;
4247 case R_PPC64_GOT_TPREL16_DS:
4248 case R_PPC64_GOT_TPREL16_LO_DS:
4249 case R_PPC64_GOT_TPREL16_HI:
4250 case R_PPC64_GOT_TPREL16_HA:
4251 tls_type = TLS_TLS | TLS_TPREL;
4254 case R_PPC64_GOT_DTPREL16_DS:
4255 case R_PPC64_GOT_DTPREL16_LO_DS:
4256 case R_PPC64_GOT_DTPREL16_HI:
4257 case R_PPC64_GOT_DTPREL16_HA:
4258 tls_type = TLS_TLS | TLS_DTPREL;
4262 case R_PPC64_GOT16_DS:
4263 case R_PPC64_GOT16_HA:
4264 case R_PPC64_GOT16_HI:
4265 case R_PPC64_GOT16_LO:
4266 case R_PPC64_GOT16_LO_DS:
4269 struct got_entry *ent;
4274 ent = local_got_ents[r_symndx];
4276 for (; ent != NULL; ent = ent->next)
4277 if (ent->addend == rel->r_addend
4278 && ent->owner == abfd
4279 && ent->tls_type == tls_type)
4283 if (ent->got.refcount > 0)
4284 ent->got.refcount -= 1;
4288 case R_PPC64_PLT16_HA:
4289 case R_PPC64_PLT16_HI:
4290 case R_PPC64_PLT16_LO:
4294 case R_PPC64_REL14_BRNTAKEN:
4295 case R_PPC64_REL14_BRTAKEN:
4299 struct plt_entry *ent;
4301 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4302 if (ent->addend == rel->r_addend)
4306 if (ent->plt.refcount > 0)
4307 ent->plt.refcount -= 1;
4318 /* Called via elf_link_hash_traverse to transfer dynamic linking
4319 information on function code symbol entries to their corresponding
4320 function descriptor symbol entries. */
4322 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
4324 struct bfd_link_info *info;
4325 struct ppc_link_hash_table *htab;
4326 struct plt_entry *ent;
4327 struct ppc_link_hash_entry *fh;
4328 struct ppc_link_hash_entry *fdh;
4329 bfd_boolean force_local;
4331 fh = (struct ppc_link_hash_entry *) h;
4332 if (fh->elf.root.type == bfd_link_hash_indirect)
4335 if (fh->elf.root.type == bfd_link_hash_warning)
4336 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
4339 htab = ppc_hash_table (info);
4341 /* If this is a function code symbol, transfer dynamic linking
4342 information to the function descriptor symbol. */
4346 if (fh->elf.root.type == bfd_link_hash_undefweak
4347 && (fh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
4348 htab->have_undefweak = TRUE;
4350 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
4351 if (ent->plt.refcount > 0)
4354 || fh->elf.root.root.string[0] != '.'
4355 || fh->elf.root.root.string[1] == '\0')
4358 /* Find the corresponding function descriptor symbol. Create it
4359 as undefined if necessary. */
4361 fdh = get_fdh (fh, htab);
4363 while (fdh->elf.root.type == bfd_link_hash_indirect
4364 || fdh->elf.root.type == bfd_link_hash_warning)
4365 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
4369 && (fh->elf.root.type == bfd_link_hash_undefined
4370 || fh->elf.root.type == bfd_link_hash_undefweak))
4374 struct bfd_link_hash_entry *bh;
4376 abfd = fh->elf.root.u.undef.abfd;
4377 newsym = bfd_make_empty_symbol (abfd);
4378 newsym->name = fh->elf.root.root.string + 1;
4379 newsym->section = bfd_und_section_ptr;
4381 newsym->flags = BSF_OBJECT;
4382 if (fh->elf.root.type == bfd_link_hash_undefweak)
4383 newsym->flags |= BSF_WEAK;
4385 bh = &fdh->elf.root;
4386 if ( !(_bfd_generic_link_add_one_symbol
4387 (info, abfd, newsym->name, newsym->flags,
4388 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
4392 fdh = (struct ppc_link_hash_entry *) bh;
4393 fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4395 fdh->elf.type = STT_OBJECT;
4399 && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
4401 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4402 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
4403 || (fdh->elf.root.type == bfd_link_hash_undefweak
4404 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
4406 if (fdh->elf.dynindx == -1)
4407 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
4409 fdh->elf.elf_link_hash_flags
4410 |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
4411 | ELF_LINK_HASH_REF_DYNAMIC
4412 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4413 | ELF_LINK_NON_GOT_REF));
4414 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
4416 fdh->elf.plt.plist = fh->elf.plt.plist;
4417 fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4419 fdh->is_func_descriptor = 1;
4424 /* Now that the info is on the function descriptor, clear the
4425 function code sym info. Any function code syms for which we
4426 don't have a definition in a regular file, we force local.
4427 This prevents a shared library from exporting syms that have
4428 been imported from another library. Function code syms that
4429 are really in the library we must leave global to prevent the
4430 linker dragging in a definition from a static library. */
4433 && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4435 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4436 || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0));
4437 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
4442 #define MIN_SAVE_FPR 14
4443 #define MAX_SAVE_FPR 31
4445 /* Called near the start of bfd_elf_size_dynamic_sections. We use
4446 this hook to a) provide some gcc support functions, and b) transfer
4447 dynamic linking information gathered so far on function code symbol
4448 entries, to their corresponding function descriptor symbol entries. */
4450 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
4451 struct bfd_link_info *info)
4453 struct ppc_link_hash_table *htab;
4454 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
4455 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
4457 struct elf_link_hash_entry *h;
4461 htab = ppc_hash_table (info);
4463 if (htab->sfpr == NULL)
4464 /* We don't have any relocs. */
4467 /* First provide any missing ._savef* and ._restf* functions. */
4468 memcpy (sym, "._savef14", 10);
4469 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4471 sym[7] = i / 10 + '0';
4472 sym[8] = i % 10 + '0';
4473 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4475 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4477 if (lowest_savef > i)
4479 h->root.type = bfd_link_hash_defined;
4480 h->root.u.def.section = htab->sfpr;
4481 h->root.u.def.value = (i - lowest_savef) * 4;
4483 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4484 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
4488 memcpy (sym, "._restf14", 10);
4489 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4491 sym[7] = i / 10 + '0';
4492 sym[8] = i % 10 + '0';
4493 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4495 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4497 if (lowest_restf > i)
4499 h->root.type = bfd_link_hash_defined;
4500 h->root.u.def.section = htab->sfpr;
4501 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4502 + (i - lowest_restf) * 4);
4504 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4505 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
4509 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
4511 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4512 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
4514 if (htab->sfpr->_raw_size == 0)
4516 if (!htab->have_undefweak)
4518 _bfd_strip_section_from_output (info, htab->sfpr);
4522 htab->sfpr->_raw_size = 4;
4525 p = bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
4528 htab->sfpr->contents = p;
4530 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
4532 unsigned int fpr = i << 21;
4533 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4534 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
4537 if (lowest_savef <= MAX_SAVE_FPR)
4539 bfd_put_32 (htab->elf.dynobj, BLR, p);
4543 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
4545 unsigned int fpr = i << 21;
4546 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4547 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
4550 if (lowest_restf <= MAX_SAVE_FPR
4551 || htab->sfpr->_raw_size == 4)
4553 bfd_put_32 (htab->elf.dynobj, BLR, p);
4559 /* Adjust a symbol defined by a dynamic object and referenced by a
4560 regular object. The current definition is in some section of the
4561 dynamic object, but we're not including those sections. We have to
4562 change the definition to something the rest of the link can
4566 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4567 struct elf_link_hash_entry *h)
4569 struct ppc_link_hash_table *htab;
4571 unsigned int power_of_two;
4573 htab = ppc_hash_table (info);
4575 /* Deal with function syms. */
4576 if (h->type == STT_FUNC
4577 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4579 /* Clear procedure linkage table information for any symbol that
4580 won't need a .plt entry. */
4581 struct plt_entry *ent;
4582 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4583 if (ent->plt.refcount > 0)
4585 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
4587 || SYMBOL_CALLS_LOCAL (info, h)
4588 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4589 && h->root.type == bfd_link_hash_undefweak))
4591 h->plt.plist = NULL;
4592 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
4596 h->plt.plist = NULL;
4598 /* If this is a weak symbol, and there is a real definition, the
4599 processor independent code will have arranged for us to see the
4600 real definition first, and we can just use the same value. */
4601 if (h->weakdef != NULL)
4603 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4604 || h->weakdef->root.type == bfd_link_hash_defweak);
4605 h->root.u.def.section = h->weakdef->root.u.def.section;
4606 h->root.u.def.value = h->weakdef->root.u.def.value;
4607 if (ELIMINATE_COPY_RELOCS)
4608 h->elf_link_hash_flags
4609 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
4610 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
4614 /* If we are creating a shared library, we must presume that the
4615 only references to the symbol are via the global offset table.
4616 For such cases we need not do anything here; the relocations will
4617 be handled correctly by relocate_section. */
4621 /* If there are no references to this symbol that do not use the
4622 GOT, we don't need to generate a copy reloc. */
4623 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4626 if (ELIMINATE_COPY_RELOCS)
4628 struct ppc_link_hash_entry * eh;
4629 struct ppc_dyn_relocs *p;
4631 eh = (struct ppc_link_hash_entry *) h;
4632 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4634 s = p->sec->output_section;
4635 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4639 /* If we didn't find any dynamic relocs in read-only sections, then
4640 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4643 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
4648 if (h->plt.plist != NULL)
4650 /* We should never get here, but unfortunately there are versions
4651 of gcc out there that improperly (for this ABI) put initialized
4652 function pointers, vtable refs and suchlike in read-only
4653 sections. Allow them to proceed, but warn that this might
4654 break at runtime. */
4655 (*_bfd_error_handler)
4656 (_("copy reloc against `%s' requires lazy plt linking; "
4657 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
4658 h->root.root.string);
4661 /* This is a reference to a symbol defined by a dynamic object which
4662 is not a function. */
4664 /* We must allocate the symbol in our .dynbss section, which will
4665 become part of the .bss section of the executable. There will be
4666 an entry for this symbol in the .dynsym section. The dynamic
4667 object will contain position independent code, so all references
4668 from the dynamic object to this symbol will go through the global
4669 offset table. The dynamic linker will use the .dynsym entry to
4670 determine the address it must put in the global offset table, so
4671 both the dynamic object and the regular object will refer to the
4672 same memory location for the variable. */
4674 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4675 to copy the initial value out of the dynamic object and into the
4676 runtime process image. We need to remember the offset into the
4677 .rela.bss section we are going to use. */
4678 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4680 htab->relbss->_raw_size += sizeof (Elf64_External_Rela);
4681 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4684 /* We need to figure out the alignment required for this symbol. I
4685 have no idea how ELF linkers handle this. */
4686 power_of_two = bfd_log2 (h->size);
4687 if (power_of_two > 4)
4690 /* Apply the required alignment. */
4692 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
4693 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4695 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4699 /* Define the symbol as being at this point in the section. */
4700 h->root.u.def.section = s;
4701 h->root.u.def.value = s->_raw_size;
4703 /* Increment the section size to make room for the symbol. */
4704 s->_raw_size += h->size;
4709 /* If given a function descriptor symbol, hide both the function code
4710 sym and the descriptor. */
4712 ppc64_elf_hide_symbol (struct bfd_link_info *info,
4713 struct elf_link_hash_entry *h,
4714 bfd_boolean force_local)
4716 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4718 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
4720 struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
4725 struct ppc_link_hash_table *htab;
4728 /* We aren't supposed to use alloca in BFD because on
4729 systems which do not have alloca the version in libiberty
4730 calls xmalloc, which might cause the program to crash
4731 when it runs out of memory. This function doesn't have a
4732 return status, so there's no way to gracefully return an
4733 error. So cheat. We know that string[-1] can be safely
4734 dereferenced; It's either a string in an ELF string
4735 table, or allocated in an objalloc structure. */
4737 p = h->root.root.string - 1;
4740 htab = ppc_hash_table (info);
4741 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4744 /* Unfortunately, if it so happens that the string we were
4745 looking for was allocated immediately before this string,
4746 then we overwrote the string terminator. That's the only
4747 reason the lookup should fail. */
4750 q = h->root.root.string + strlen (h->root.root.string);
4751 while (q >= h->root.root.string && *q == *p)
4753 if (q < h->root.root.string && *p == '.')
4754 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4758 ((struct ppc_link_hash_entry *) h)->oh = fh;
4759 ((struct ppc_link_hash_entry *) fh)->oh = h;
4763 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
4768 get_sym_h (struct elf_link_hash_entry **hp, Elf_Internal_Sym **symp,
4769 asection **symsecp, char **tls_maskp, Elf_Internal_Sym **locsymsp,
4770 unsigned long r_symndx, bfd *ibfd)
4772 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4774 if (r_symndx >= symtab_hdr->sh_info)
4776 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4777 struct elf_link_hash_entry *h;
4779 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4780 while (h->root.type == bfd_link_hash_indirect
4781 || h->root.type == bfd_link_hash_warning)
4782 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4790 if (symsecp != NULL)
4792 asection *symsec = NULL;
4793 if (h->root.type == bfd_link_hash_defined
4794 || h->root.type == bfd_link_hash_defweak)
4795 symsec = h->root.u.def.section;
4799 if (tls_maskp != NULL)
4801 struct ppc_link_hash_entry *eh;
4803 eh = (struct ppc_link_hash_entry *) h;
4804 *tls_maskp = &eh->tls_mask;
4809 Elf_Internal_Sym *sym;
4810 Elf_Internal_Sym *locsyms = *locsymsp;
4812 if (locsyms == NULL)
4814 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4815 if (locsyms == NULL)
4816 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4817 symtab_hdr->sh_info,
4818 0, NULL, NULL, NULL);
4819 if (locsyms == NULL)
4821 *locsymsp = locsyms;
4823 sym = locsyms + r_symndx;
4831 if (symsecp != NULL)
4833 asection *symsec = NULL;
4834 if ((sym->st_shndx != SHN_UNDEF
4835 && sym->st_shndx < SHN_LORESERVE)
4836 || sym->st_shndx > SHN_HIRESERVE)
4837 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
4841 if (tls_maskp != NULL)
4843 struct got_entry **lgot_ents;
4847 lgot_ents = elf_local_got_ents (ibfd);
4848 if (lgot_ents != NULL)
4850 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
4851 tls_mask = &lgot_masks[r_symndx];
4853 *tls_maskp = tls_mask;
4859 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
4860 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
4861 type suitable for optimization, and 1 otherwise. */
4864 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
4865 Elf_Internal_Sym **locsymsp,
4866 const Elf_Internal_Rela *rel, bfd *ibfd)
4868 unsigned long r_symndx;
4870 struct elf_link_hash_entry *h;
4871 Elf_Internal_Sym *sym;
4875 r_symndx = ELF64_R_SYM (rel->r_info);
4876 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4879 if ((*tls_maskp != NULL && **tls_maskp != 0)
4881 || ppc64_elf_section_data (sec)->t_symndx == NULL)
4884 /* Look inside a TOC section too. */
4887 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
4888 off = h->root.u.def.value;
4891 off = sym->st_value;
4892 off += rel->r_addend;
4893 BFD_ASSERT (off % 8 == 0);
4894 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
4895 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
4896 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4898 if (toc_symndx != NULL)
4899 *toc_symndx = r_symndx;
4901 || ((h->root.type == bfd_link_hash_defined
4902 || h->root.type == bfd_link_hash_defweak)
4903 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
4904 && (next_r == -1 || next_r == -2))
4909 /* Adjust all global syms defined in opd sections. In gcc generated
4910 code these will already have been done, but I suppose we have to
4911 cater for all sorts of hand written assembly. */
4914 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
4916 struct ppc_link_hash_entry *eh;
4920 if (h->root.type == bfd_link_hash_indirect)
4923 if (h->root.type == bfd_link_hash_warning)
4924 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4926 if (h->root.type != bfd_link_hash_defined
4927 && h->root.type != bfd_link_hash_defweak)
4930 eh = (struct ppc_link_hash_entry *) h;
4931 if (eh->adjust_done)
4934 sym_sec = eh->elf.root.u.def.section;
4936 && elf_section_data (sym_sec) != NULL
4937 && (opd_adjust = ppc64_elf_section_data (sym_sec)->opd.adjust) != NULL)
4939 eh->elf.root.u.def.value += opd_adjust[eh->elf.root.u.def.value / 24];
4940 eh->adjust_done = 1;
4945 /* Remove unused Official Procedure Descriptor entries. Currently we
4946 only remove those associated with functions in discarded link-once
4947 sections, or weakly defined functions that have been overridden. It
4948 would be possible to remove many more entries for statically linked
4952 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info)
4955 bfd_boolean some_edited = FALSE;
4957 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4960 Elf_Internal_Rela *relstart, *rel, *relend;
4961 Elf_Internal_Shdr *symtab_hdr;
4962 Elf_Internal_Sym *local_syms;
4963 struct elf_link_hash_entry **sym_hashes;
4967 bfd_boolean need_edit;
4969 sec = bfd_get_section_by_name (ibfd, ".opd");
4973 amt = sec->_raw_size * sizeof (long) / 24;
4974 adjust = ppc64_elf_section_data (sec)->opd.adjust;
4977 /* Must be a ld -r link. ie. check_relocs hasn't been
4979 adjust = bfd_zalloc (obfd, amt);
4980 ppc64_elf_section_data (sec)->opd.adjust = adjust;
4982 memset (adjust, 0, amt);
4984 if (sec->output_section == bfd_abs_section_ptr)
4987 /* Look through the section relocs. */
4988 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
4992 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4993 sym_hashes = elf_sym_hashes (ibfd);
4995 /* Read the relocations. */
4996 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4998 if (relstart == NULL)
5001 /* First run through the relocs to check they are sane, and to
5002 determine whether we need to edit this opd section. */
5005 relend = relstart + sec->reloc_count;
5006 for (rel = relstart; rel < relend; )
5008 enum elf_ppc64_reloc_type r_type;
5009 unsigned long r_symndx;
5011 struct elf_link_hash_entry *h;
5012 Elf_Internal_Sym *sym;
5014 /* .opd contains a regular array of 24 byte entries. We're
5015 only interested in the reloc pointing to a function entry
5017 if (rel->r_offset != offset
5018 || rel + 1 >= relend
5019 || (rel + 1)->r_offset != offset + 8)
5021 /* If someone messes with .opd alignment then after a
5022 "ld -r" we might have padding in the middle of .opd.
5023 Also, there's nothing to prevent someone putting
5024 something silly in .opd with the assembler. No .opd
5025 optimization for them! */
5026 (*_bfd_error_handler)
5027 (_("%s: .opd is not a regular array of opd entries"),
5028 bfd_archive_filename (ibfd));
5033 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
5034 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
5036 (*_bfd_error_handler)
5037 (_("%s: unexpected reloc type %u in .opd section"),
5038 bfd_archive_filename (ibfd), r_type);
5043 r_symndx = ELF64_R_SYM (rel->r_info);
5044 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5048 if (sym_sec == NULL || sym_sec->owner == NULL)
5050 const char *sym_name;
5052 sym_name = h->root.root.string;
5054 sym_name = bfd_elf_local_sym_name (ibfd, sym);
5056 (*_bfd_error_handler)
5057 (_("%s: undefined sym `%s' in .opd section"),
5058 bfd_archive_filename (ibfd),
5064 /* opd entries are always for functions defined in the
5065 current input bfd. If the symbol isn't defined in the
5066 input bfd, then we won't be using the function in this
5067 bfd; It must be defined in a linkonce section in another
5068 bfd, or is weak. It's also possible that we are
5069 discarding the function due to a linker script /DISCARD/,
5070 which we test for via the output_section. */
5071 if (sym_sec->owner != ibfd
5072 || sym_sec->output_section == bfd_abs_section_ptr)
5077 /* Allow for the possibility of a reloc on the third word. */
5079 && rel->r_offset == offset - 8)
5085 Elf_Internal_Rela *write_rel;
5086 bfd_byte *rptr, *wptr;
5089 /* This seems a waste of time as input .opd sections are all
5090 zeros as generated by gcc, but I suppose there's no reason
5091 this will always be so. We might start putting something in
5092 the third word of .opd entries. */
5093 if ((sec->flags & SEC_IN_MEMORY) == 0)
5095 bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size);
5097 || !bfd_get_section_contents (ibfd, sec, loc, 0,
5101 if (local_syms != NULL
5102 && symtab_hdr->contents != (unsigned char *) local_syms)
5104 if (elf_section_data (sec)->relocs != relstart)
5108 sec->contents = loc;
5109 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
5112 elf_section_data (sec)->relocs = relstart;
5114 wptr = sec->contents;
5115 rptr = sec->contents;
5116 write_rel = relstart;
5119 for (rel = relstart; rel < relend; rel++)
5121 unsigned long r_symndx;
5123 struct elf_link_hash_entry *h;
5124 Elf_Internal_Sym *sym;
5126 r_symndx = ELF64_R_SYM (rel->r_info);
5127 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5131 if (rel->r_offset == offset)
5133 struct ppc_link_hash_entry *fdh = NULL;
5135 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
5136 ppc_hash_table (info));
5138 skip = (sym_sec->owner != ibfd
5139 || sym_sec->output_section == bfd_abs_section_ptr);
5142 if (h != NULL && sym_sec->owner == ibfd)
5144 /* Arrange for the function descriptor sym
5146 fdh->elf.root.u.def.value = 0;
5147 fdh->elf.root.u.def.section = sym_sec;
5152 /* We'll be keeping this opd entry. */
5156 /* Redefine the function descriptor symbol to
5157 this location in the opd section. It is
5158 necessary to update the value here rather
5159 than using an array of adjustments as we do
5160 for local symbols, because various places
5161 in the generic ELF code use the value
5162 stored in u.def.value. */
5163 fdh->elf.root.u.def.value = wptr - sec->contents;
5164 fdh->adjust_done = 1;
5167 /* Local syms are a bit tricky. We could
5168 tweak them as they can be cached, but
5169 we'd need to look through the local syms
5170 for the function descriptor sym which we
5171 don't have at the moment. So keep an
5172 array of adjustments. */
5173 adjust[rel->r_offset / 24] = wptr - rptr;
5176 memcpy (wptr, rptr, 24);
5185 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
5188 /* We won't be needing dynamic relocs here. */
5189 struct ppc_dyn_relocs **pp;
5190 struct ppc_dyn_relocs *p;
5193 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5194 else if (sym_sec != NULL)
5195 pp = ((struct ppc_dyn_relocs **)
5196 &elf_section_data (sym_sec)->local_dynrel);
5198 pp = ((struct ppc_dyn_relocs **)
5199 &elf_section_data (sec)->local_dynrel);
5200 while ((p = *pp) != NULL)
5215 /* We need to adjust any reloc offsets to point to the
5216 new opd entries. While we're at it, we may as well
5217 remove redundant relocs. */
5218 rel->r_offset += wptr - rptr;
5219 if (write_rel != rel)
5220 memcpy (write_rel, rel, sizeof (*rel));
5225 sec->_cooked_size = wptr - sec->contents;
5226 sec->reloc_count = write_rel - relstart;
5227 /* Fudge the size too, as this is used later in
5228 elf_bfd_final_link if we are emitting relocs. */
5229 elf_section_data (sec)->rel_hdr.sh_size
5230 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
5231 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
5234 else if (elf_section_data (sec)->relocs != relstart)
5237 if (local_syms != NULL
5238 && symtab_hdr->contents != (unsigned char *) local_syms)
5240 if (!info->keep_memory)
5243 symtab_hdr->contents = (unsigned char *) local_syms;
5248 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
5253 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
5256 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5258 struct ppc_link_hash_table *htab;
5260 htab = ppc_hash_table (info);
5261 if (htab->tls_get_addr != NULL)
5263 struct elf_link_hash_entry *h = htab->tls_get_addr;
5265 while (h->root.type == bfd_link_hash_indirect
5266 || h->root.type == bfd_link_hash_warning)
5267 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5269 htab->tls_get_addr = h;
5272 return _bfd_elf_tls_setup (obfd, info);
5275 /* Run through all the TLS relocs looking for optimization
5276 opportunities. The linker has been hacked (see ppc64elf.em) to do
5277 a preliminary section layout so that we know the TLS segment
5278 offsets. We can't optimize earlier because some optimizations need
5279 to know the tp offset, and we need to optimize before allocating
5280 dynamic relocations. */
5283 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
5287 struct ppc_link_hash_table *htab;
5289 if (info->relocatable || info->shared)
5292 htab = ppc_hash_table (info);
5293 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5295 Elf_Internal_Sym *locsyms = NULL;
5297 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5298 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5300 Elf_Internal_Rela *relstart, *rel, *relend;
5301 int expecting_tls_get_addr;
5303 /* Read the relocations. */
5304 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5306 if (relstart == NULL)
5309 expecting_tls_get_addr = 0;
5310 relend = relstart + sec->reloc_count;
5311 for (rel = relstart; rel < relend; rel++)
5313 enum elf_ppc64_reloc_type r_type;
5314 unsigned long r_symndx;
5315 struct elf_link_hash_entry *h;
5316 Elf_Internal_Sym *sym;
5319 char tls_set, tls_clear, tls_type = 0;
5321 bfd_boolean ok_tprel, is_local;
5323 r_symndx = ELF64_R_SYM (rel->r_info);
5324 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
5328 if (elf_section_data (sec)->relocs != relstart)
5331 && (elf_tdata (ibfd)->symtab_hdr.contents
5332 != (unsigned char *) locsyms))
5339 if (h->root.type != bfd_link_hash_defined
5340 && h->root.type != bfd_link_hash_defweak)
5342 value = h->root.u.def.value;
5346 value = sym->st_value;
5348 if (elf_section_data (sym_sec) != NULL)
5351 adjust = ppc64_elf_section_data (sym_sec)->opd.adjust;
5353 value += adjust[value / 24];
5360 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5363 value += sym_sec->output_offset;
5364 value += sym_sec->output_section->vma;
5365 value -= htab->elf.tls_sec->vma;
5366 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
5367 < (bfd_vma) 1 << 32);
5370 r_type = ELF64_R_TYPE (rel->r_info);
5373 case R_PPC64_GOT_TLSLD16:
5374 case R_PPC64_GOT_TLSLD16_LO:
5375 case R_PPC64_GOT_TLSLD16_HI:
5376 case R_PPC64_GOT_TLSLD16_HA:
5377 /* These relocs should never be against a symbol
5378 defined in a shared lib. Leave them alone if
5379 that turns out to be the case. */
5380 ppc64_tlsld_got (ibfd)->refcount -= 1;
5387 tls_type = TLS_TLS | TLS_LD;
5388 expecting_tls_get_addr = 1;
5391 case R_PPC64_GOT_TLSGD16:
5392 case R_PPC64_GOT_TLSGD16_LO:
5393 case R_PPC64_GOT_TLSGD16_HI:
5394 case R_PPC64_GOT_TLSGD16_HA:
5400 tls_set = TLS_TLS | TLS_TPRELGD;
5402 tls_type = TLS_TLS | TLS_GD;
5403 expecting_tls_get_addr = 1;
5406 case R_PPC64_GOT_TPREL16_DS:
5407 case R_PPC64_GOT_TPREL16_LO_DS:
5408 case R_PPC64_GOT_TPREL16_HI:
5409 case R_PPC64_GOT_TPREL16_HA:
5410 expecting_tls_get_addr = 0;
5415 tls_clear = TLS_TPREL;
5416 tls_type = TLS_TLS | TLS_TPREL;
5423 case R_PPC64_REL14_BRTAKEN:
5424 case R_PPC64_REL14_BRNTAKEN:
5427 && h == htab->tls_get_addr)
5429 if (!expecting_tls_get_addr
5431 && ((ELF64_R_TYPE (rel[-1].r_info)
5433 || (ELF64_R_TYPE (rel[-1].r_info)
5434 == R_PPC64_TOC16_LO)))
5436 /* Check for toc tls entries. */
5440 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
5444 if (toc_tls != NULL)
5445 expecting_tls_get_addr = retval > 1;
5448 if (expecting_tls_get_addr)
5450 struct plt_entry *ent;
5451 for (ent = h->plt.plist; ent; ent = ent->next)
5452 if (ent->addend == 0)
5454 if (ent->plt.refcount > 0)
5455 ent->plt.refcount -= 1;
5460 expecting_tls_get_addr = 0;
5463 case R_PPC64_TPREL64:
5464 expecting_tls_get_addr = 0;
5468 tls_set = TLS_EXPLICIT;
5469 tls_clear = TLS_TPREL;
5475 case R_PPC64_DTPMOD64:
5476 expecting_tls_get_addr = 0;
5477 if (rel + 1 < relend
5479 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
5480 && rel[1].r_offset == rel->r_offset + 8)
5484 tls_set = TLS_EXPLICIT | TLS_GD;
5487 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
5496 tls_set = TLS_EXPLICIT;
5502 expecting_tls_get_addr = 0;
5506 if ((tls_set & TLS_EXPLICIT) == 0)
5508 struct got_entry *ent;
5510 /* Adjust got entry for this reloc. */
5514 ent = elf_local_got_ents (ibfd)[r_symndx];
5516 for (; ent != NULL; ent = ent->next)
5517 if (ent->addend == rel->r_addend
5518 && ent->owner == ibfd
5519 && ent->tls_type == tls_type)
5526 /* We managed to get rid of a got entry. */
5527 if (ent->got.refcount > 0)
5528 ent->got.refcount -= 1;
5533 struct ppc_link_hash_entry * eh;
5534 struct ppc_dyn_relocs **pp;
5535 struct ppc_dyn_relocs *p;
5537 /* Adjust dynamic relocs. */
5538 eh = (struct ppc_link_hash_entry *) h;
5539 for (pp = &eh->dyn_relocs;
5544 /* If we got rid of a DTPMOD/DTPREL reloc
5545 pair then we'll lose one or two dyn
5547 if (tls_set == (TLS_EXPLICIT | TLS_GD))
5556 *tls_mask |= tls_set;
5557 *tls_mask &= ~tls_clear;
5560 if (elf_section_data (sec)->relocs != relstart)
5565 && (elf_tdata (ibfd)->symtab_hdr.contents
5566 != (unsigned char *) locsyms))
5568 if (!info->keep_memory)
5571 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
5577 /* Allocate space in .plt, .got and associated reloc sections for
5581 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5583 struct bfd_link_info *info;
5584 struct ppc_link_hash_table *htab;
5586 struct ppc_link_hash_entry *eh;
5587 struct ppc_dyn_relocs *p;
5588 struct got_entry *gent;
5590 if (h->root.type == bfd_link_hash_indirect)
5593 if (h->root.type == bfd_link_hash_warning)
5594 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5596 info = (struct bfd_link_info *) inf;
5597 htab = ppc_hash_table (info);
5599 if (htab->elf.dynamic_sections_created
5601 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5603 struct plt_entry *pent;
5604 bfd_boolean doneone = FALSE;
5605 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
5606 if (pent->plt.refcount > 0)
5608 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5610 /* If this is the first .plt entry, make room for the special
5613 if (s->_raw_size == 0)
5614 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
5616 pent->plt.offset = s->_raw_size;
5618 /* Make room for this entry. */
5619 s->_raw_size += PLT_ENTRY_SIZE;
5621 /* Make room for the .glink code. */
5623 if (s->_raw_size == 0)
5624 s->_raw_size += GLINK_CALL_STUB_SIZE;
5625 /* We need bigger stubs past index 32767. */
5626 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
5628 s->_raw_size += 2*4;
5630 /* We also need to make an entry in the .rela.plt section. */
5632 s->_raw_size += sizeof (Elf64_External_Rela);
5636 pent->plt.offset = (bfd_vma) -1;
5639 h->plt.plist = NULL;
5640 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5645 h->plt.plist = NULL;
5646 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5649 eh = (struct ppc_link_hash_entry *) h;
5650 /* Run through the TLS GD got entries first if we're changing them
5652 if ((eh->tls_mask & TLS_TPRELGD) != 0)
5653 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5654 if (gent->got.refcount > 0
5655 && (gent->tls_type & TLS_GD) != 0)
5657 /* This was a GD entry that has been converted to TPREL. If
5658 there happens to be a TPREL entry we can use that one. */
5659 struct got_entry *ent;
5660 for (ent = h->got.glist; ent != NULL; ent = ent->next)
5661 if (ent->got.refcount > 0
5662 && (ent->tls_type & TLS_TPREL) != 0
5663 && ent->addend == gent->addend
5664 && ent->owner == gent->owner)
5666 gent->got.refcount = 0;
5670 /* If not, then we'll be using our own TPREL entry. */
5671 if (gent->got.refcount != 0)
5672 gent->tls_type = TLS_TLS | TLS_TPREL;
5675 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5676 if (gent->got.refcount > 0)
5680 /* Make sure this symbol is output as a dynamic symbol.
5681 Undefined weak syms won't yet be marked as dynamic,
5682 nor will all TLS symbols. */
5683 if (h->dynindx == -1
5684 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5686 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5690 if ((gent->tls_type & TLS_LD) != 0
5691 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5693 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
5697 s = ppc64_elf_tdata (gent->owner)->got;
5698 gent->got.offset = s->_raw_size;
5700 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
5701 dyn = htab->elf.dynamic_sections_created;
5703 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5704 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5705 || h->root.type != bfd_link_hash_undefweak))
5706 ppc64_elf_tdata (gent->owner)->relgot->_raw_size
5707 += (gent->tls_type & eh->tls_mask & TLS_GD
5708 ? 2 * sizeof (Elf64_External_Rela)
5709 : sizeof (Elf64_External_Rela));
5712 gent->got.offset = (bfd_vma) -1;
5714 if (eh->dyn_relocs == NULL)
5717 /* In the shared -Bsymbolic case, discard space allocated for
5718 dynamic pc-relative relocs against symbols which turn out to be
5719 defined in regular objects. For the normal shared case, discard
5720 space for relocs that have become local due to symbol visibility
5725 /* Relocs that use pc_count are those that appear on a call insn,
5726 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
5727 generated via assembly. We want calls to protected symbols to
5728 resolve directly to the function rather than going via the plt.
5729 If people want function pointer comparisons to work as expected
5730 then they should avoid writing weird assembly. */
5731 if (SYMBOL_CALLS_LOCAL (info, h))
5733 struct ppc_dyn_relocs **pp;
5735 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5737 p->count -= p->pc_count;
5746 /* Also discard relocs on undefined weak syms with non-default
5748 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5749 && h->root.type == bfd_link_hash_undefweak)
5750 eh->dyn_relocs = NULL;
5752 else if (ELIMINATE_COPY_RELOCS)
5754 /* For the non-shared case, discard space for relocs against
5755 symbols which turn out to need copy relocs or are not
5758 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5759 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5760 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
5762 /* Make sure this symbol is output as a dynamic symbol.
5763 Undefined weak syms won't yet be marked as dynamic. */
5764 if (h->dynindx == -1
5765 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5767 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5771 /* If that succeeded, we know we'll be keeping all the
5773 if (h->dynindx != -1)
5777 eh->dyn_relocs = NULL;
5782 /* Finally, allocate space. */
5783 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5785 asection *sreloc = elf_section_data (p->sec)->sreloc;
5786 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
5792 /* Find any dynamic relocs that apply to read-only sections. */
5795 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5797 struct ppc_link_hash_entry *eh;
5798 struct ppc_dyn_relocs *p;
5800 if (h->root.type == bfd_link_hash_warning)
5801 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5803 eh = (struct ppc_link_hash_entry *) h;
5804 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5806 asection *s = p->sec->output_section;
5808 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5810 struct bfd_link_info *info = inf;
5812 info->flags |= DF_TEXTREL;
5814 /* Not an error, just cut short the traversal. */
5821 /* Set the sizes of the dynamic sections. */
5824 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5825 struct bfd_link_info *info)
5827 struct ppc_link_hash_table *htab;
5833 htab = ppc_hash_table (info);
5834 dynobj = htab->elf.dynobj;
5838 if (htab->elf.dynamic_sections_created)
5840 /* Set the contents of the .interp section to the interpreter. */
5841 if (info->executable)
5843 s = bfd_get_section_by_name (dynobj, ".interp");
5846 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
5847 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5851 /* Set up .got offsets for local syms, and space for local dynamic
5853 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5855 struct got_entry **lgot_ents;
5856 struct got_entry **end_lgot_ents;
5858 bfd_size_type locsymcount;
5859 Elf_Internal_Shdr *symtab_hdr;
5862 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
5865 if (ppc64_tlsld_got (ibfd)->refcount > 0)
5867 s = ppc64_elf_tdata (ibfd)->got;
5868 ppc64_tlsld_got (ibfd)->offset = s->_raw_size;
5872 srel = ppc64_elf_tdata (ibfd)->relgot;
5873 srel->_raw_size += sizeof (Elf64_External_Rela);
5877 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
5879 for (s = ibfd->sections; s != NULL; s = s->next)
5881 struct ppc_dyn_relocs *p;
5883 for (p = *((struct ppc_dyn_relocs **)
5884 &elf_section_data (s)->local_dynrel);
5888 if (!bfd_is_abs_section (p->sec)
5889 && bfd_is_abs_section (p->sec->output_section))
5891 /* Input section has been discarded, either because
5892 it is a copy of a linkonce section or due to
5893 linker script /DISCARD/, so we'll be discarding
5896 else if (p->count != 0)
5898 srel = elf_section_data (p->sec)->sreloc;
5899 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
5900 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
5901 info->flags |= DF_TEXTREL;
5906 lgot_ents = elf_local_got_ents (ibfd);
5910 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5911 locsymcount = symtab_hdr->sh_info;
5912 end_lgot_ents = lgot_ents + locsymcount;
5913 lgot_masks = (char *) end_lgot_ents;
5914 s = ppc64_elf_tdata (ibfd)->got;
5915 srel = ppc64_elf_tdata (ibfd)->relgot;
5916 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
5918 struct got_entry *ent;
5920 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
5921 if (ent->got.refcount > 0)
5923 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
5925 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
5927 ppc64_tlsld_got (ibfd)->offset = s->_raw_size;
5930 srel->_raw_size += sizeof (Elf64_External_Rela);
5932 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
5936 ent->got.offset = s->_raw_size;
5937 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
5941 srel->_raw_size += 2 * sizeof (Elf64_External_Rela);
5947 srel->_raw_size += sizeof (Elf64_External_Rela);
5952 ent->got.offset = (bfd_vma) -1;
5956 /* Allocate global sym .plt and .got entries, and space for global
5957 sym dynamic relocs. */
5958 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
5960 /* We now have determined the sizes of the various dynamic sections.
5961 Allocate memory for them. */
5963 for (s = dynobj->sections; s != NULL; s = s->next)
5965 if ((s->flags & SEC_LINKER_CREATED) == 0)
5968 /* Reset _cooked_size since prelim layout will set it wrongly,
5969 and a non-zero _cooked_size sticks. */
5970 s->_cooked_size = 0;
5972 if (s == htab->brlt || s == htab->relbrlt)
5973 /* These haven't been allocated yet; don't strip. */
5975 else if (s == htab->got
5977 || s == htab->glink)
5979 /* Strip this section if we don't need it; see the
5982 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5984 if (s->_raw_size == 0)
5986 /* If we don't need this section, strip it from the
5987 output file. This is mostly to handle .rela.bss and
5988 .rela.plt. We must create both sections in
5989 create_dynamic_sections, because they must be created
5990 before the linker maps input sections to output
5991 sections. The linker does that before
5992 adjust_dynamic_symbol is called, and it is that
5993 function which decides whether anything needs to go
5994 into these sections. */
5998 if (s != htab->relplt)
6001 /* We use the reloc_count field as a counter if we need
6002 to copy relocs into the output file. */
6008 /* It's not one of our sections, so don't allocate space. */
6012 if (s->_raw_size == 0)
6014 _bfd_strip_section_from_output (info, s);
6018 /* .plt is in the bss section. We don't initialise it. */
6022 /* Allocate memory for the section contents. We use bfd_zalloc
6023 here in case unused entries are not reclaimed before the
6024 section's contents are written out. This should not happen,
6025 but this way if it does we get a R_PPC64_NONE reloc in .rela
6026 sections instead of garbage.
6027 We also rely on the section contents being zero when writing
6029 s->contents = bfd_zalloc (dynobj, s->_raw_size);
6030 if (s->contents == NULL)
6034 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6036 s = ppc64_elf_tdata (ibfd)->got;
6037 if (s != NULL && s != htab->got)
6039 s->_cooked_size = 0;
6040 if (s->_raw_size == 0)
6041 _bfd_strip_section_from_output (info, s);
6044 s->contents = bfd_zalloc (ibfd, s->_raw_size);
6045 if (s->contents == NULL)
6049 s = ppc64_elf_tdata (ibfd)->relgot;
6052 s->_cooked_size = 0;
6053 if (s->_raw_size == 0)
6054 _bfd_strip_section_from_output (info, s);
6057 s->contents = bfd_zalloc (ibfd, s->_raw_size);
6058 if (s->contents == NULL)
6066 if (htab->elf.dynamic_sections_created)
6068 /* Add some entries to the .dynamic section. We fill in the
6069 values later, in ppc64_elf_finish_dynamic_sections, but we
6070 must add the entries now so that we get the correct size for
6071 the .dynamic section. The DT_DEBUG entry is filled in by the
6072 dynamic linker and used by the debugger. */
6073 #define add_dynamic_entry(TAG, VAL) \
6074 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6076 if (info->executable)
6078 if (!add_dynamic_entry (DT_DEBUG, 0))
6082 if (htab->plt != NULL && htab->plt->_raw_size != 0)
6084 if (!add_dynamic_entry (DT_PLTGOT, 0)
6085 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6086 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6087 || !add_dynamic_entry (DT_JMPREL, 0)
6088 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
6094 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
6095 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
6101 if (!add_dynamic_entry (DT_RELA, 0)
6102 || !add_dynamic_entry (DT_RELASZ, 0)
6103 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
6106 /* If any dynamic relocs apply to a read-only section,
6107 then we need a DT_TEXTREL entry. */
6108 if ((info->flags & DF_TEXTREL) == 0)
6109 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
6111 if ((info->flags & DF_TEXTREL) != 0)
6113 if (!add_dynamic_entry (DT_TEXTREL, 0))
6118 #undef add_dynamic_entry
6123 /* Determine the type of stub needed, if any, for a call. */
6125 static inline enum ppc_stub_type
6126 ppc_type_of_stub (asection *input_sec,
6127 const Elf_Internal_Rela *rel,
6128 struct ppc_link_hash_entry **hash,
6129 bfd_vma destination)
6131 struct ppc_link_hash_entry *h = *hash;
6133 bfd_vma branch_offset;
6134 bfd_vma max_branch_offset;
6135 enum elf_ppc64_reloc_type r_type;
6140 && h->oh->dynindx != -1)
6142 struct plt_entry *ent;
6143 for (ent = h->oh->plt.plist; ent != NULL; ent = ent->next)
6144 if (ent->addend == rel->r_addend
6145 && ent->plt.offset != (bfd_vma) -1)
6147 *hash = (struct ppc_link_hash_entry *) h->oh;
6148 return ppc_stub_plt_call;
6152 if (!(h->elf.root.type == bfd_link_hash_defined
6153 || h->elf.root.type == bfd_link_hash_defweak)
6154 || h->elf.root.u.def.section->output_section == NULL)
6155 return ppc_stub_none;
6158 /* Determine where the call point is. */
6159 location = (input_sec->output_offset
6160 + input_sec->output_section->vma
6163 branch_offset = destination - location;
6164 r_type = ELF64_R_TYPE (rel->r_info);
6166 /* Determine if a long branch stub is needed. */
6167 max_branch_offset = 1 << 25;
6168 if (r_type != R_PPC64_REL24)
6169 max_branch_offset = 1 << 15;
6171 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
6172 /* We need a stub. Figure out whether a long_branch or plt_branch
6174 return ppc_stub_long_branch;
6176 return ppc_stub_none;
6179 /* Build a .plt call stub. */
6181 static inline bfd_byte *
6182 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
6184 #define PPC_LO(v) ((v) & 0xffff)
6185 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6186 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6188 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
6189 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
6190 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6191 if (PPC_HA (offset + 8) != PPC_HA (offset))
6192 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
6194 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
6195 if (PPC_HA (offset + 8) != PPC_HA (offset))
6196 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
6198 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
6199 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6200 bfd_put_32 (obfd, BCTR, p), p += 4;
6205 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
6207 struct ppc_stub_hash_entry *stub_entry;
6208 struct ppc_branch_hash_entry *br_entry;
6209 struct bfd_link_info *info;
6210 struct ppc_link_hash_table *htab;
6214 struct plt_entry *ent;
6218 /* Massage our args to the form they really have. */
6219 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6222 htab = ppc_hash_table (info);
6224 /* Make a note of the offset within the stubs for this entry. */
6225 stub_entry->stub_offset = stub_entry->stub_sec->_cooked_size;
6226 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
6228 htab->stub_count[stub_entry->stub_type - 1] += 1;
6229 switch (stub_entry->stub_type)
6231 case ppc_stub_long_branch:
6232 case ppc_stub_long_branch_r2off:
6233 /* Branches are relative. This is where we are going to. */
6234 off = (stub_entry->target_value
6235 + stub_entry->target_section->output_offset
6236 + stub_entry->target_section->output_section->vma);
6238 /* And this is where we are coming from. */
6239 off -= (stub_entry->stub_offset
6240 + stub_entry->stub_sec->output_offset
6241 + stub_entry->stub_sec->output_section->vma);
6243 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
6249 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6250 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6251 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
6253 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
6255 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
6260 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
6262 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
6265 case ppc_stub_plt_branch:
6266 case ppc_stub_plt_branch_r2off:
6267 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6268 stub_entry->root.string + 9,
6270 if (br_entry == NULL)
6272 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
6273 stub_entry->root.string + 9);
6274 htab->stub_error = TRUE;
6278 off = (stub_entry->target_value
6279 + stub_entry->target_section->output_offset
6280 + stub_entry->target_section->output_section->vma);
6282 bfd_put_64 (htab->brlt->owner, off,
6283 htab->brlt->contents + br_entry->offset);
6287 /* Create a reloc for the branch lookup table entry. */
6288 Elf_Internal_Rela rela;
6291 rela.r_offset = (br_entry->offset
6292 + htab->brlt->output_offset
6293 + htab->brlt->output_section->vma);
6294 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6295 rela.r_addend = off;
6297 rl = htab->relbrlt->contents;
6298 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
6299 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
6302 off = (br_entry->offset
6303 + htab->brlt->output_offset
6304 + htab->brlt->output_section->vma
6305 - elf_gp (htab->brlt->output_section->owner)
6306 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6308 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
6310 (*_bfd_error_handler)
6311 (_("linkage table error against `%s'"),
6312 stub_entry->root.string);
6313 bfd_set_error (bfd_error_bad_value);
6314 htab->stub_error = TRUE;
6319 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
6321 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
6323 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
6330 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6331 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6332 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
6334 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
6336 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
6338 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
6340 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
6344 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
6346 bfd_put_32 (htab->stub_bfd, BCTR, loc);
6349 case ppc_stub_plt_call:
6350 /* Do the best we can for shared libraries built without
6351 exporting ".foo" for each "foo". This can happen when symbol
6352 versioning scripts strip all bar a subset of symbols. */
6353 if (stub_entry->h->oh->root.type != bfd_link_hash_defined
6354 && stub_entry->h->oh->root.type != bfd_link_hash_defweak)
6356 /* Point the symbol at the stub. There may be multiple stubs,
6357 we don't really care; The main thing is to make this sym
6358 defined somewhere. Maybe defining the symbol in the stub
6359 section is a silly idea. If we didn't do this, htab->top_id
6361 stub_entry->h->oh->root.type = bfd_link_hash_defined;
6362 stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
6363 stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
6366 /* Now build the stub. */
6368 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6369 if (ent->addend == stub_entry->addend)
6371 off = ent->plt.offset;
6374 if (off >= (bfd_vma) -2)
6377 off &= ~ (bfd_vma) 1;
6378 off += (htab->plt->output_offset
6379 + htab->plt->output_section->vma
6380 - elf_gp (htab->plt->output_section->owner)
6381 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6383 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
6385 (*_bfd_error_handler)
6386 (_("linkage table error against `%s'"),
6387 stub_entry->h->elf.root.root.string);
6388 bfd_set_error (bfd_error_bad_value);
6389 htab->stub_error = TRUE;
6393 p = build_plt_stub (htab->stub_bfd, loc, off);
6402 stub_entry->stub_sec->_cooked_size += size;
6404 if (htab->emit_stub_syms
6405 && !(stub_entry->stub_type == ppc_stub_plt_call
6406 && stub_entry->h->oh->root.type == bfd_link_hash_defined
6407 && stub_entry->h->oh->root.u.def.section == stub_entry->stub_sec
6408 && stub_entry->h->oh->root.u.def.value == stub_entry->stub_offset))
6410 struct elf_link_hash_entry *h;
6411 h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string,
6412 TRUE, FALSE, FALSE);
6415 if (h->root.type == bfd_link_hash_new)
6417 h->root.type = bfd_link_hash_defined;
6418 h->root.u.def.section = stub_entry->stub_sec;
6419 h->root.u.def.value = stub_entry->stub_offset;
6420 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
6421 | ELF_LINK_HASH_DEF_REGULAR
6422 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
6423 | ELF_LINK_FORCED_LOCAL);
6430 /* As above, but don't actually build the stub. Just bump offset so
6431 we know stub section sizes, and select plt_branch stubs where
6432 long_branch stubs won't do. */
6435 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
6437 struct ppc_stub_hash_entry *stub_entry;
6438 struct bfd_link_info *info;
6439 struct ppc_link_hash_table *htab;
6443 /* Massage our args to the form they really have. */
6444 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6447 htab = ppc_hash_table (info);
6449 if (stub_entry->stub_type == ppc_stub_plt_call)
6451 struct plt_entry *ent;
6453 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6454 if (ent->addend == stub_entry->addend)
6456 off = ent->plt.offset & ~(bfd_vma) 1;
6459 if (off >= (bfd_vma) -2)
6461 off += (htab->plt->output_offset
6462 + htab->plt->output_section->vma
6463 - elf_gp (htab->plt->output_section->owner)
6464 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6466 size = PLT_CALL_STUB_SIZE;
6467 if (PPC_HA (off + 16) != PPC_HA (off))
6472 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
6474 off = (stub_entry->target_value
6475 + stub_entry->target_section->output_offset
6476 + stub_entry->target_section->output_section->vma);
6477 off -= (stub_entry->stub_sec->_raw_size
6478 + stub_entry->stub_sec->output_offset
6479 + stub_entry->stub_sec->output_section->vma);
6481 /* Reset the stub type from the plt variant in case we now
6482 can reach with a shorter stub. */
6483 if (stub_entry->stub_type >= ppc_stub_plt_branch)
6484 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
6487 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
6493 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
6494 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
6496 struct ppc_branch_hash_entry *br_entry;
6498 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6499 stub_entry->root.string + 9,
6501 if (br_entry == NULL)
6503 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
6504 stub_entry->root.string + 9);
6505 htab->stub_error = TRUE;
6509 if (br_entry->iter != htab->stub_iteration)
6511 br_entry->iter = htab->stub_iteration;
6512 br_entry->offset = htab->brlt->_raw_size;
6513 htab->brlt->_raw_size += 8;
6516 htab->relbrlt->_raw_size += sizeof (Elf64_External_Rela);
6519 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
6521 if (stub_entry->stub_type != ppc_stub_plt_branch)
6526 stub_entry->stub_sec->_raw_size += size;
6530 /* Set up various things so that we can make a list of input sections
6531 for each output section included in the link. Returns -1 on error,
6532 0 when no stubs will be needed, and 1 on success. */
6535 ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
6538 int top_id, top_index, id;
6540 asection **input_list;
6542 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6544 if (htab->brlt == NULL)
6547 /* Find the top input section id. */
6548 for (input_bfd = info->input_bfds, top_id = 3;
6550 input_bfd = input_bfd->link_next)
6552 for (section = input_bfd->sections;
6554 section = section->next)
6556 if (top_id < section->id)
6557 top_id = section->id;
6561 htab->top_id = top_id;
6562 amt = sizeof (struct map_stub) * (top_id + 1);
6563 htab->stub_group = bfd_zmalloc (amt);
6564 if (htab->stub_group == NULL)
6567 /* Set toc_off for com, und, abs and ind sections. */
6568 for (id = 0; id < 3; id++)
6569 htab->stub_group[id].toc_off = TOC_BASE_OFF;
6571 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
6573 /* We can't use output_bfd->section_count here to find the top output
6574 section index as some sections may have been removed, and
6575 _bfd_strip_section_from_output doesn't renumber the indices. */
6576 for (section = output_bfd->sections, top_index = 0;
6578 section = section->next)
6580 if (top_index < section->index)
6581 top_index = section->index;
6584 htab->top_index = top_index;
6585 amt = sizeof (asection *) * (top_index + 1);
6586 input_list = bfd_zmalloc (amt);
6587 htab->input_list = input_list;
6588 if (input_list == NULL)
6594 /* The linker repeatedly calls this function for each TOC input section
6595 and linker generated GOT section. Group input bfds such that the toc
6596 within a group is less than 64k in size. Will break with cute linker
6597 scripts that play games with dot in the output toc section. */
6600 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
6602 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6604 if (!htab->no_multi_toc)
6606 bfd_vma addr = isec->output_offset + isec->output_section->vma;
6607 bfd_vma off = addr - htab->toc_curr;
6608 if (off + isec->_raw_size > 0x10000)
6610 htab->toc_curr = addr;
6611 htab->multi_toc_needed = 1;
6613 elf_gp (isec->owner) = (htab->toc_curr
6614 - elf_gp (isec->output_section->owner)
6619 /* Called after the last call to the above function. */
6622 ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
6623 struct bfd_link_info *info)
6625 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6627 /* toc_curr tracks the TOC offset used for code sections below in
6628 ppc64_elf_next_input_section. Start off at 0x8000. */
6629 htab->toc_curr = TOC_BASE_OFF;
6632 /* No toc references were found in ISEC. If the code in ISEC makes no
6633 calls, then there's no need to use toc adjusting stubs when branching
6634 into ISEC. Actually, indirect calls from ISEC are OK as they will
6638 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
6645 /* We know none of our code bearing sections will need toc stubs. */
6646 if ((isec->flags & SEC_LINKER_CREATED) != 0)
6649 if (isec->_raw_size == 0)
6652 /* Hack for linux kernel. .fixup contains branches, but only back to
6653 the function that hit an exception. */
6654 branch_ok = strcmp (isec->name, ".fixup") == 0;
6656 contents = elf_section_data (isec)->this_hdr.contents;
6657 if (contents == NULL)
6659 contents = bfd_malloc (isec->_raw_size);
6660 if (contents == NULL)
6662 if (! bfd_get_section_contents (isec->owner, isec, contents,
6663 0, isec->_raw_size))
6668 if (info->keep_memory)
6669 elf_section_data (isec)->this_hdr.contents = contents;
6672 /* Code scan, because we don't necessarily have relocs on calls to
6673 static functions. */
6675 for (i = 0; i < isec->_raw_size; i += 4)
6677 unsigned long insn = bfd_get_32 (isec->owner, contents + i);
6678 /* Is this a branch? */
6679 if ((insn & (0x3f << 26)) == (18 << 26)
6680 /* If branch and link, it's a function call. */
6682 /* Sibling calls use a plain branch. I don't know a way
6683 of deciding whether a branch is really a sibling call. */
6691 if (elf_section_data (isec)->this_hdr.contents != contents)
6696 /* The linker repeatedly calls this function for each input section,
6697 in the order that input sections are linked into output sections.
6698 Build lists of input sections to determine groupings between which
6699 we may insert linker stubs. */
6702 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
6704 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6707 if ((isec->output_section->flags & SEC_CODE) != 0
6708 && isec->output_section->index <= htab->top_index)
6710 asection **list = htab->input_list + isec->output_section->index;
6711 /* Steal the link_sec pointer for our list. */
6712 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
6713 /* This happens to make the list in reverse order,
6714 which is what we want. */
6715 PREV_SEC (isec) = *list;
6719 /* If a code section has a function that uses the TOC then we need
6720 to use the right TOC (obviously). Also, make sure that .opd gets
6721 the correct TOC value for R_PPC64_TOC relocs that don't have or
6722 can't find their function symbol (shouldn't ever happen now). */
6723 if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
6725 if (elf_gp (isec->owner) != 0)
6726 htab->toc_curr = elf_gp (isec->owner);
6728 else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
6731 isec->has_gp_reloc = ret;
6733 /* Functions that don't use the TOC can belong in any TOC group.
6734 Use the last TOC base. This happens to make _init and _fini
6736 htab->stub_group[isec->id].toc_off = htab->toc_curr;
6740 /* See whether we can group stub sections together. Grouping stub
6741 sections may result in fewer stubs. More importantly, we need to
6742 put all .init* and .fini* stubs at the beginning of the .init or
6743 .fini output sections respectively, because glibc splits the
6744 _init and _fini functions into multiple parts. Putting a stub in
6745 the middle of a function is not a good idea. */
6748 group_sections (struct ppc_link_hash_table *htab,
6749 bfd_size_type stub_group_size,
6750 bfd_boolean stubs_always_before_branch)
6752 asection **list = htab->input_list + htab->top_index;
6755 asection *tail = *list;
6756 while (tail != NULL)
6760 bfd_size_type total;
6761 bfd_boolean big_sec;
6765 if (tail->_cooked_size)
6766 total = tail->_cooked_size;
6768 total = tail->_raw_size;
6769 big_sec = total >= stub_group_size;
6770 curr_toc = htab->stub_group[tail->id].toc_off;
6772 while ((prev = PREV_SEC (curr)) != NULL
6773 && ((total += curr->output_offset - prev->output_offset)
6775 && htab->stub_group[prev->id].toc_off == curr_toc)
6778 /* OK, the size from the start of CURR to the end is less
6779 than stub_group_size and thus can be handled by one stub
6780 section. (or the tail section is itself larger than
6781 stub_group_size, in which case we may be toast.) We
6782 should really be keeping track of the total size of stubs
6783 added here, as stubs contribute to the final output
6784 section size. That's a little tricky, and this way will
6785 only break if stubs added make the total size more than
6786 2^25, ie. for the default stub_group_size, if stubs total
6787 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6790 prev = PREV_SEC (tail);
6791 /* Set up this stub group. */
6792 htab->stub_group[tail->id].link_sec = curr;
6794 while (tail != curr && (tail = prev) != NULL);
6796 /* But wait, there's more! Input sections up to stub_group_size
6797 bytes before the stub section can be handled by it too.
6798 Don't do this if we have a really large section after the
6799 stubs, as adding more stubs increases the chance that
6800 branches may not reach into the stub section. */
6801 if (!stubs_always_before_branch && !big_sec)
6805 && ((total += tail->output_offset - prev->output_offset)
6807 && htab->stub_group[prev->id].toc_off == curr_toc)
6810 prev = PREV_SEC (tail);
6811 htab->stub_group[tail->id].link_sec = curr;
6817 while (list-- != htab->input_list);
6818 free (htab->input_list);
6822 /* Determine and set the size of the stub section for a final link.
6824 The basic idea here is to examine all the relocations looking for
6825 PC-relative calls to a target that is unreachable with a "bl"
6829 ppc64_elf_size_stubs (bfd *output_bfd,
6830 struct bfd_link_info *info,
6831 bfd_signed_vma group_size,
6832 asection *(*add_stub_section) (const char *, asection *),
6833 void (*layout_sections_again) (void))
6835 bfd_size_type stub_group_size;
6836 bfd_boolean stubs_always_before_branch;
6837 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6839 /* Stash our params away. */
6840 htab->add_stub_section = add_stub_section;
6841 htab->layout_sections_again = layout_sections_again;
6842 stubs_always_before_branch = group_size < 0;
6844 stub_group_size = -group_size;
6846 stub_group_size = group_size;
6847 if (stub_group_size == 1)
6849 /* Default values. */
6850 if (stubs_always_before_branch)
6852 stub_group_size = 0x1e00000;
6853 if (htab->has_14bit_branch)
6854 stub_group_size = 0x7800;
6858 stub_group_size = 0x1c00000;
6859 if (htab->has_14bit_branch)
6860 stub_group_size = 0x7000;
6864 group_sections (htab, stub_group_size, stubs_always_before_branch);
6869 unsigned int bfd_indx;
6871 bfd_boolean stub_changed;
6873 htab->stub_iteration += 1;
6874 stub_changed = FALSE;
6876 for (input_bfd = info->input_bfds, bfd_indx = 0;
6878 input_bfd = input_bfd->link_next, bfd_indx++)
6880 Elf_Internal_Shdr *symtab_hdr;
6882 Elf_Internal_Sym *local_syms = NULL;
6884 /* We'll need the symbol table in a second. */
6885 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6886 if (symtab_hdr->sh_info == 0)
6889 /* Walk over each section attached to the input bfd. */
6890 for (section = input_bfd->sections;
6892 section = section->next)
6894 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
6896 /* If there aren't any relocs, then there's nothing more
6898 if ((section->flags & SEC_RELOC) == 0
6899 || section->reloc_count == 0)
6902 /* If this section is a link-once section that will be
6903 discarded, then don't create any stubs. */
6904 if (section->output_section == NULL
6905 || section->output_section->owner != output_bfd)
6908 /* Get the relocs. */
6910 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
6912 if (internal_relocs == NULL)
6913 goto error_ret_free_local;
6915 /* Now examine each relocation. */
6916 irela = internal_relocs;
6917 irelaend = irela + section->reloc_count;
6918 for (; irela < irelaend; irela++)
6920 enum elf_ppc64_reloc_type r_type;
6921 unsigned int r_indx;
6922 enum ppc_stub_type stub_type;
6923 struct ppc_stub_hash_entry *stub_entry;
6926 bfd_vma destination;
6927 struct ppc_link_hash_entry *hash;
6928 struct elf_link_hash_entry *h;
6929 Elf_Internal_Sym *sym;
6931 const asection *id_sec;
6933 r_type = ELF64_R_TYPE (irela->r_info);
6934 r_indx = ELF64_R_SYM (irela->r_info);
6936 if (r_type >= R_PPC64_max)
6938 bfd_set_error (bfd_error_bad_value);
6939 goto error_ret_free_internal;
6942 /* Only look for stubs on branch instructions. */
6943 if (r_type != R_PPC64_REL24
6944 && r_type != R_PPC64_REL14
6945 && r_type != R_PPC64_REL14_BRTAKEN
6946 && r_type != R_PPC64_REL14_BRNTAKEN)
6949 /* Now determine the call target, its name, value,
6952 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6954 goto error_ret_free_internal;
6955 hash = (struct ppc_link_hash_entry *) h;
6959 /* It's a local symbol. */
6960 sym_value = sym->st_value;
6961 destination = (sym_value + irela->r_addend
6962 + sym_sec->output_offset
6963 + sym_sec->output_section->vma);
6967 /* It's an external symbol. */
6969 if (hash->elf.root.type == bfd_link_hash_defined
6970 || hash->elf.root.type == bfd_link_hash_defweak)
6972 sym_value = hash->elf.root.u.def.value;
6973 if (sym_sec->output_section != NULL)
6974 destination = (sym_value + irela->r_addend
6975 + sym_sec->output_offset
6976 + sym_sec->output_section->vma);
6978 else if (hash->elf.root.type == bfd_link_hash_undefweak)
6980 else if (hash->elf.root.type == bfd_link_hash_undefined)
6984 bfd_set_error (bfd_error_bad_value);
6985 goto error_ret_free_internal;
6989 /* Determine what (if any) linker stub is needed. */
6990 stub_type = ppc_type_of_stub (section, irela, &hash,
6993 if (stub_type != ppc_stub_plt_call)
6995 /* Check whether we need a TOC adjusting stub.
6996 Since the linker pastes together pieces from
6997 different object files when creating the
6998 _init and _fini functions, it may be that a
6999 call to what looks like a local sym is in
7000 fact a call needing a TOC adjustment. */
7002 && sym_sec->output_section != NULL
7003 && (htab->stub_group[sym_sec->id].toc_off
7004 != htab->stub_group[section->id].toc_off)
7005 && sym_sec->has_gp_reloc
7006 && section->has_gp_reloc)
7007 stub_type = ppc_stub_long_branch_r2off;
7010 if (stub_type == ppc_stub_none)
7013 /* __tls_get_addr calls might be eliminated. */
7014 if (stub_type != ppc_stub_plt_call
7016 && &hash->elf == htab->tls_get_addr
7017 && section->has_tls_reloc
7018 && irela != internal_relocs)
7023 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
7024 irela - 1, input_bfd))
7025 goto error_ret_free_internal;
7030 /* Support for grouping stub sections. */
7031 id_sec = htab->stub_group[section->id].link_sec;
7033 /* Get the name of this stub. */
7034 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
7036 goto error_ret_free_internal;
7038 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
7039 stub_name, FALSE, FALSE);
7040 if (stub_entry != NULL)
7042 /* The proper stub has already been created. */
7047 stub_entry = ppc_add_stub (stub_name, section, htab);
7048 if (stub_entry == NULL)
7051 error_ret_free_internal:
7052 if (elf_section_data (section)->relocs == NULL)
7053 free (internal_relocs);
7054 error_ret_free_local:
7055 if (local_syms != NULL
7056 && (symtab_hdr->contents
7057 != (unsigned char *) local_syms))
7062 stub_entry->stub_type = stub_type;
7063 stub_entry->target_value = sym_value;
7064 stub_entry->target_section = sym_sec;
7065 stub_entry->h = hash;
7066 stub_entry->addend = irela->r_addend;
7067 stub_changed = TRUE;
7070 /* We're done with the internal relocs, free them. */
7071 if (elf_section_data (section)->relocs != internal_relocs)
7072 free (internal_relocs);
7075 if (local_syms != NULL
7076 && symtab_hdr->contents != (unsigned char *) local_syms)
7078 if (!info->keep_memory)
7081 symtab_hdr->contents = (unsigned char *) local_syms;
7088 /* OK, we've added some stubs. Find out the new size of the
7090 for (stub_sec = htab->stub_bfd->sections;
7092 stub_sec = stub_sec->next)
7093 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7095 stub_sec->_raw_size = 0;
7096 stub_sec->_cooked_size = 0;
7098 htab->brlt->_raw_size = 0;
7099 htab->brlt->_cooked_size = 0;
7102 htab->relbrlt->_raw_size = 0;
7103 htab->relbrlt->_cooked_size = 0;
7106 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
7108 /* Ask the linker to do its stuff. */
7109 (*htab->layout_sections_again) ();
7112 /* It would be nice to strip .branch_lt from the output if the
7113 section is empty, but it's too late. If we strip sections here,
7114 the dynamic symbol table is corrupted since the section symbol
7115 for the stripped section isn't written. */
7120 /* Called after we have determined section placement. If sections
7121 move, we'll be called again. Provide a value for TOCstart. */
7124 ppc64_elf_toc (bfd *obfd)
7129 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
7130 order. The TOC starts where the first of these sections starts. */
7131 s = bfd_get_section_by_name (obfd, ".got");
7133 s = bfd_get_section_by_name (obfd, ".toc");
7135 s = bfd_get_section_by_name (obfd, ".tocbss");
7137 s = bfd_get_section_by_name (obfd, ".plt");
7140 /* This may happen for
7141 o references to TOC base (SYM@toc / TOC[tc0]) without a
7144 o --gc-sections and empty TOC sections
7146 FIXME: Warn user? */
7148 /* Look for a likely section. We probably won't even be
7150 for (s = obfd->sections; s != NULL; s = s->next)
7151 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
7152 == (SEC_ALLOC | SEC_SMALL_DATA))
7155 for (s = obfd->sections; s != NULL; s = s->next)
7156 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
7157 == (SEC_ALLOC | SEC_SMALL_DATA))
7160 for (s = obfd->sections; s != NULL; s = s->next)
7161 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
7164 for (s = obfd->sections; s != NULL; s = s->next)
7165 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
7171 TOCstart = s->output_section->vma + s->output_offset;
7176 /* Build all the stubs associated with the current output file.
7177 The stubs are kept in a hash table attached to the main linker
7178 hash table. This function is called via gldelf64ppc_finish. */
7181 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
7182 struct bfd_link_info *info,
7185 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7188 int stub_sec_count = 0;
7190 htab->emit_stub_syms = emit_stub_syms;
7191 for (stub_sec = htab->stub_bfd->sections;
7193 stub_sec = stub_sec->next)
7194 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7198 /* Allocate memory to hold the linker stubs. */
7199 size = stub_sec->_raw_size;
7202 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
7203 if (stub_sec->contents == NULL)
7206 stub_sec->_cooked_size = 0;
7209 if (htab->plt != NULL)
7214 /* Build the .glink plt call stub. */
7215 plt0 = (htab->plt->output_section->vma
7216 + htab->plt->output_offset
7217 - (htab->glink->output_section->vma
7218 + htab->glink->output_offset
7219 + GLINK_CALL_STUB_SIZE));
7220 if (plt0 + 0x80008000 > 0xffffffff)
7222 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
7223 bfd_set_error (bfd_error_bad_value);
7227 if (htab->emit_stub_syms)
7229 struct elf_link_hash_entry *h;
7230 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
7233 if (h->root.type == bfd_link_hash_new)
7235 h->root.type = bfd_link_hash_defined;
7236 h->root.u.def.section = htab->glink;
7237 h->root.u.def.value = 0;
7238 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
7239 | ELF_LINK_HASH_DEF_REGULAR
7240 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7241 | ELF_LINK_FORCED_LOCAL);
7244 p = htab->glink->contents;
7245 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
7247 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
7249 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
7251 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
7253 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
7255 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
7257 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
7259 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
7261 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
7263 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
7265 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
7267 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
7269 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
7271 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
7273 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
7275 bfd_put_32 (htab->glink->owner, BCTR, p);
7278 /* Build the .glink lazy link call stubs. */
7280 while (p < htab->glink->contents + htab->glink->_raw_size)
7284 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
7289 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
7291 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
7294 bfd_put_32 (htab->glink->owner,
7295 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
7299 htab->glink->_cooked_size = p - htab->glink->contents;
7302 if (htab->brlt->_raw_size != 0)
7304 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
7305 htab->brlt->_raw_size);
7306 if (htab->brlt->contents == NULL)
7309 if (info->shared && htab->relbrlt->_raw_size != 0)
7311 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
7312 htab->relbrlt->_raw_size);
7313 if (htab->relbrlt->contents == NULL)
7317 /* Build the stubs as directed by the stub hash table. */
7318 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
7320 for (stub_sec = htab->stub_bfd->sections;
7322 stub_sec = stub_sec->next)
7323 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7325 stub_sec_count += 1;
7326 if (stub_sec->_raw_size != stub_sec->_cooked_size)
7330 if (stub_sec != NULL
7331 || htab->glink->_raw_size != htab->glink->_cooked_size)
7333 htab->stub_error = TRUE;
7334 (*_bfd_error_handler) (_("stubs don't match calculated size"));
7337 if (htab->stub_error)
7342 *stats = bfd_malloc (500);
7346 sprintf (*stats, _("linker stubs in %u groups\n"
7349 " long branch %lu\n"
7350 " long toc adj %lu\n"
7353 htab->stub_count[ppc_stub_long_branch - 1],
7354 htab->stub_count[ppc_stub_long_branch_r2off - 1],
7355 htab->stub_count[ppc_stub_plt_branch - 1],
7356 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
7357 htab->stub_count[ppc_stub_plt_call - 1]);
7362 /* The RELOCATE_SECTION function is called by the ELF backend linker
7363 to handle the relocations for a section.
7365 The relocs are always passed as Rela structures; if the section
7366 actually uses Rel structures, the r_addend field will always be
7369 This function is responsible for adjust the section contents as
7370 necessary, and (if using Rela relocs and generating a
7371 relocatable output file) adjusting the reloc addend as
7374 This function does not have to worry about setting the reloc
7375 address or the reloc symbol index.
7377 LOCAL_SYMS is a pointer to the swapped in local symbols.
7379 LOCAL_SECTIONS is an array giving the section in the input file
7380 corresponding to the st_shndx field of each local symbol.
7382 The global hash table entry for the global symbols can be found
7383 via elf_sym_hashes (input_bfd).
7385 When generating relocatable output, this function must handle
7386 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7387 going to be the section symbol corresponding to the output
7388 section, which means that the addend must be adjusted
7392 ppc64_elf_relocate_section (bfd *output_bfd,
7393 struct bfd_link_info *info,
7395 asection *input_section,
7397 Elf_Internal_Rela *relocs,
7398 Elf_Internal_Sym *local_syms,
7399 asection **local_sections)
7401 struct ppc_link_hash_table *htab;
7402 Elf_Internal_Shdr *symtab_hdr;
7403 struct elf_link_hash_entry **sym_hashes;
7404 Elf_Internal_Rela *rel;
7405 Elf_Internal_Rela *relend;
7406 Elf_Internal_Rela outrel;
7408 struct got_entry **local_got_ents;
7410 bfd_boolean ret = TRUE;
7412 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
7413 bfd_boolean is_power4 = FALSE;
7415 if (info->relocatable)
7418 /* Initialize howto table if needed. */
7419 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
7422 htab = ppc_hash_table (info);
7423 local_got_ents = elf_local_got_ents (input_bfd);
7424 TOCstart = elf_gp (output_bfd);
7425 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
7426 sym_hashes = elf_sym_hashes (input_bfd);
7427 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
7430 relend = relocs + input_section->reloc_count;
7431 for (; rel < relend; rel++)
7433 enum elf_ppc64_reloc_type r_type;
7435 bfd_reloc_status_type r;
7436 Elf_Internal_Sym *sym;
7438 struct elf_link_hash_entry *h;
7439 struct elf_link_hash_entry *fdh;
7440 const char *sym_name;
7441 unsigned long r_symndx, toc_symndx;
7442 char tls_mask, tls_gd, tls_type;
7445 bfd_boolean unresolved_reloc;
7447 unsigned long insn, mask;
7448 struct ppc_stub_hash_entry *stub_entry;
7449 bfd_vma max_br_offset;
7452 r_type = ELF64_R_TYPE (rel->r_info);
7453 r_symndx = ELF64_R_SYM (rel->r_info);
7455 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
7456 symbol of the previous ADDR64 reloc. The symbol gives us the
7457 proper TOC base to use. */
7458 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
7460 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
7462 r_symndx = ELF64_R_SYM (rel[-1].r_info);
7468 unresolved_reloc = FALSE;
7471 if (r_symndx < symtab_hdr->sh_info)
7473 /* It's a local symbol. */
7474 sym = local_syms + r_symndx;
7475 sec = local_sections[r_symndx];
7476 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
7477 sym_type = ELF64_ST_TYPE (sym->st_info);
7478 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7479 if (elf_section_data (sec) != NULL)
7481 long *opd_sym_adjust;
7483 opd_sym_adjust = ppc64_elf_section_data (sec)->opd.adjust;
7484 if (opd_sym_adjust != NULL)
7485 relocation += opd_sym_adjust[sym->st_value / 24];
7490 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7491 r_symndx, symtab_hdr, sym_hashes,
7493 unresolved_reloc, warned);
7494 sym_name = h->root.root.string;
7498 /* TLS optimizations. Replace instruction sequences and relocs
7499 based on information we collected in tls_optimize. We edit
7500 RELOCS so that --emit-relocs will output something sensible
7501 for the final instruction stream. */
7505 if (IS_PPC64_TLS_RELOC (r_type))
7508 tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask;
7509 else if (local_got_ents != NULL)
7512 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
7513 tls_mask = lgot_masks[r_symndx];
7515 if (tls_mask == 0 && r_type == R_PPC64_TLS)
7517 /* Check for toc tls entries. */
7520 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7525 tls_mask = *toc_tls;
7529 /* Check that tls relocs are used with tls syms, and non-tls
7530 relocs are used with non-tls syms. */
7532 && r_type != R_PPC64_NONE
7534 || h->root.type == bfd_link_hash_defined
7535 || h->root.type == bfd_link_hash_defweak)
7536 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7538 if (r_type == R_PPC64_TLS && tls_mask != 0)
7539 /* R_PPC64_TLS is OK against a symbol in the TOC. */
7542 (*_bfd_error_handler)
7543 (sym_type == STT_TLS
7544 ? _("%s(%s+0x%lx): %s used with TLS symbol %s")
7545 : _("%s(%s+0x%lx): %s used with non-TLS symbol %s"),
7546 bfd_archive_filename (input_bfd),
7547 input_section->name,
7548 (long) rel->r_offset,
7549 ppc64_elf_howto_table[r_type]->name,
7553 /* Ensure reloc mapping code below stays sane. */
7554 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
7555 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
7556 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
7557 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
7558 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
7559 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
7560 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
7561 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
7562 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
7563 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
7572 case R_PPC64_TOC16_LO:
7573 case R_PPC64_TOC16_DS:
7574 case R_PPC64_TOC16_LO_DS:
7576 /* Check for toc tls entries. */
7580 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7587 tls_mask = *toc_tls;
7588 if (r_type == R_PPC64_TOC16_DS
7589 || r_type == R_PPC64_TOC16_LO_DS)
7592 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
7597 /* If we found a GD reloc pair, then we might be
7598 doing a GD->IE transition. */
7601 tls_gd = TLS_TPRELGD;
7602 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7603 goto tls_get_addr_check;
7605 else if (retval == 3)
7607 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7608 goto tls_get_addr_check;
7615 case R_PPC64_GOT_TPREL16_DS:
7616 case R_PPC64_GOT_TPREL16_LO_DS:
7618 && (tls_mask & TLS_TPREL) == 0)
7621 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
7623 insn |= 0x3c0d0000; /* addis 0,13,0 */
7624 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
7625 r_type = R_PPC64_TPREL16_HA;
7626 if (toc_symndx != 0)
7628 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
7629 /* We changed the symbol. Start over in order to
7630 get h, sym, sec etc. right. */
7635 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7641 && (tls_mask & TLS_TPREL) == 0)
7644 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7645 if ((insn & ((0x3f << 26) | (31 << 11)))
7646 == ((31 << 26) | (13 << 11)))
7647 rtra = insn & ((1 << 26) - (1 << 16));
7648 else if ((insn & ((0x3f << 26) | (31 << 16)))
7649 == ((31 << 26) | (13 << 16)))
7650 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
7653 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
7656 else if ((insn & (31 << 1)) == 23 << 1
7657 && ((insn & (31 << 6)) < 14 << 6
7658 || ((insn & (31 << 6)) >= 16 << 6
7659 && (insn & (31 << 6)) < 24 << 6)))
7660 /* load and store indexed -> dform. */
7661 insn = (32 | ((insn >> 6) & 31)) << 26;
7662 else if ((insn & (31 << 1)) == 21 << 1
7663 && (insn & (0x1a << 6)) == 0)
7664 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7665 insn = (((58 | ((insn >> 6) & 4)) << 26)
7666 | ((insn >> 6) & 1));
7667 else if ((insn & (31 << 1)) == 21 << 1
7668 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
7670 insn = (58 << 26) | 2;
7674 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7675 /* Was PPC64_TLS which sits on insn boundary, now
7676 PPC64_TPREL16_LO which is at insn+2. */
7678 r_type = R_PPC64_TPREL16_LO;
7679 if (toc_symndx != 0)
7681 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
7682 /* We changed the symbol. Start over in order to
7683 get h, sym, sec etc. right. */
7688 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7692 case R_PPC64_GOT_TLSGD16_HI:
7693 case R_PPC64_GOT_TLSGD16_HA:
7694 tls_gd = TLS_TPRELGD;
7695 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7699 case R_PPC64_GOT_TLSLD16_HI:
7700 case R_PPC64_GOT_TLSLD16_HA:
7701 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7704 if ((tls_mask & tls_gd) != 0)
7705 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7706 + R_PPC64_GOT_TPREL16_DS);
7709 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7711 r_type = R_PPC64_NONE;
7713 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7717 case R_PPC64_GOT_TLSGD16:
7718 case R_PPC64_GOT_TLSGD16_LO:
7719 tls_gd = TLS_TPRELGD;
7720 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7721 goto tls_get_addr_check;
7724 case R_PPC64_GOT_TLSLD16:
7725 case R_PPC64_GOT_TLSLD16_LO:
7726 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7729 if (rel + 1 < relend)
7731 enum elf_ppc64_reloc_type r_type2;
7732 unsigned long r_symndx2;
7733 struct elf_link_hash_entry *h2;
7734 bfd_vma insn1, insn2, insn3;
7737 /* The next instruction should be a call to
7738 __tls_get_addr. Peek at the reloc to be sure. */
7739 r_type2 = ELF64_R_TYPE (rel[1].r_info);
7740 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7741 if (r_symndx2 < symtab_hdr->sh_info
7742 || (r_type2 != R_PPC64_REL14
7743 && r_type2 != R_PPC64_REL14_BRTAKEN
7744 && r_type2 != R_PPC64_REL14_BRNTAKEN
7745 && r_type2 != R_PPC64_REL24))
7748 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7749 while (h2->root.type == bfd_link_hash_indirect
7750 || h2->root.type == bfd_link_hash_warning)
7751 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
7752 if (h2 == NULL || h2 != htab->tls_get_addr)
7755 /* OK, it checks out. Replace the call. */
7756 offset = rel[1].r_offset;
7757 insn1 = bfd_get_32 (output_bfd,
7758 contents + rel->r_offset - 2);
7759 insn3 = bfd_get_32 (output_bfd,
7760 contents + offset + 4);
7761 if ((tls_mask & tls_gd) != 0)
7764 insn1 &= (1 << 26) - (1 << 2);
7765 insn1 |= 58 << 26; /* ld */
7766 insn2 = 0x7c636a14; /* add 3,3,13 */
7767 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
7768 if ((tls_mask & TLS_EXPLICIT) == 0)
7769 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7770 + R_PPC64_GOT_TPREL16_DS);
7772 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
7773 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7778 insn1 = 0x3c6d0000; /* addis 3,13,0 */
7779 insn2 = 0x38630000; /* addi 3,3,0 */
7782 /* Was an LD reloc. */
7784 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7785 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7787 else if (toc_symndx != 0)
7788 r_symndx = toc_symndx;
7789 r_type = R_PPC64_TPREL16_HA;
7790 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7791 rel[1].r_info = ELF64_R_INFO (r_symndx,
7792 R_PPC64_TPREL16_LO);
7793 rel[1].r_offset += 2;
7796 || insn3 == CROR_151515 || insn3 == CROR_313131)
7800 rel[1].r_offset += 4;
7802 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
7803 bfd_put_32 (output_bfd, insn2, contents + offset);
7804 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
7805 if (tls_gd == 0 || toc_symndx != 0)
7807 /* We changed the symbol. Start over in order
7808 to get h, sym, sec etc. right. */
7816 case R_PPC64_DTPMOD64:
7817 if (rel + 1 < relend
7818 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
7819 && rel[1].r_offset == rel->r_offset + 8)
7821 if ((tls_mask & TLS_GD) == 0)
7823 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
7824 if ((tls_mask & TLS_TPRELGD) != 0)
7825 r_type = R_PPC64_TPREL64;
7828 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
7829 r_type = R_PPC64_NONE;
7831 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7836 if ((tls_mask & TLS_LD) == 0)
7838 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
7839 r_type = R_PPC64_NONE;
7840 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7845 case R_PPC64_TPREL64:
7846 if ((tls_mask & TLS_TPREL) == 0)
7848 r_type = R_PPC64_NONE;
7849 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7854 /* Handle other relocations that tweak non-addend part of insn. */
7861 /* Branch taken prediction relocations. */
7862 case R_PPC64_ADDR14_BRTAKEN:
7863 case R_PPC64_REL14_BRTAKEN:
7864 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
7867 /* Branch not taken prediction relocations. */
7868 case R_PPC64_ADDR14_BRNTAKEN:
7869 case R_PPC64_REL14_BRNTAKEN:
7870 insn |= bfd_get_32 (output_bfd,
7871 contents + rel->r_offset) & ~(0x01 << 21);
7874 /* Set 'a' bit. This is 0b00010 in BO field for branch
7875 on CR(BI) insns (BO == 001at or 011at), and 0b01000
7876 for branch on CTR insns (BO == 1a00t or 1a01t). */
7877 if ((insn & (0x14 << 21)) == (0x04 << 21))
7879 else if ((insn & (0x14 << 21)) == (0x10 << 21))
7886 from = (rel->r_offset
7887 + input_section->output_offset
7888 + input_section->output_section->vma);
7890 /* Invert 'y' bit if not the default. */
7891 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7895 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7899 /* Calls to functions with a different TOC, such as calls to
7900 shared objects, need to alter the TOC pointer. This is
7901 done using a linkage stub. A REL24 branching to these
7902 linkage stubs needs to be followed by a nop, as the nop
7903 will be replaced with an instruction to restore the TOC
7906 && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
7907 && fdh->plt.plist != NULL)
7908 || ((fdh = h, sec) != NULL
7909 && sec->output_section != NULL
7910 && (htab->stub_group[sec->id].toc_off
7911 != htab->stub_group[input_section->id].toc_off)))
7912 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
7914 && (stub_entry->stub_type == ppc_stub_plt_call
7915 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
7916 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
7918 bfd_boolean can_plt_call = 0;
7920 if (rel->r_offset + 8 <= input_section->_cooked_size)
7922 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
7924 || insn == CROR_151515 || insn == CROR_313131)
7926 bfd_put_32 (input_bfd, LD_R2_40R1,
7927 contents + rel->r_offset + 4);
7934 if (stub_entry->stub_type == ppc_stub_plt_call)
7936 /* If this is a plain branch rather than a branch
7937 and link, don't require a nop. */
7938 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7939 if ((insn & 1) == 0)
7943 && strcmp (h->root.root.string,
7944 ".__libc_start_main") == 0)
7946 /* Allow crt1 branch to go via a toc adjusting stub. */
7951 if (strcmp (input_section->output_section->name,
7953 || strcmp (input_section->output_section->name,
7955 (*_bfd_error_handler)
7956 (_("%s(%s+0x%lx): automatic multiple TOCs "
7957 "not supported using your crt files; "
7958 "recompile with -mminimal-toc or upgrade gcc"),
7959 bfd_archive_filename (input_bfd),
7960 input_section->name,
7961 (long) rel->r_offset);
7963 (*_bfd_error_handler)
7964 (_("%s(%s+0x%lx): sibling call optimization to `%s' "
7965 "does not allow automatic multiple TOCs; "
7966 "recompile with -mminimal-toc or "
7967 "-fno-optimize-sibling-calls, "
7968 "or make `%s' extern"),
7969 bfd_archive_filename (input_bfd),
7970 input_section->name,
7971 (long) rel->r_offset,
7974 bfd_set_error (bfd_error_bad_value);
7981 relocation = (stub_entry->stub_offset
7982 + stub_entry->stub_sec->output_offset
7983 + stub_entry->stub_sec->output_section->vma);
7984 if (stub_entry->stub_type == ppc_stub_plt_call)
7985 unresolved_reloc = FALSE;
7990 && h->root.type == bfd_link_hash_undefweak
7992 && rel->r_addend == 0)
7994 /* Tweak calls to undefined weak functions to point at a
7995 blr. We can thus call a weak function without first
7996 checking whether the function is defined. We have a
7997 blr at the end of .sfpr. */
7998 BFD_ASSERT (htab->sfpr->_raw_size != 0);
7999 relocation = (htab->sfpr->_raw_size - 4
8000 + htab->sfpr->output_offset
8001 + htab->sfpr->output_section->vma);
8002 from = (rel->r_offset
8003 + input_section->output_offset
8004 + input_section->output_section->vma);
8006 /* But let's not be silly about it. If the blr isn't in
8007 reach, just go to the next instruction. */
8008 if (relocation - from + (1 << 25) >= (1 << 26)
8009 || htab->sfpr->_raw_size == 0)
8010 relocation = from + 4;
8017 addend = rel->r_addend;
8021 (*_bfd_error_handler)
8022 (_("%s: unknown relocation type %d for symbol %s"),
8023 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
8025 bfd_set_error (bfd_error_bad_value);
8031 case R_PPC64_GNU_VTINHERIT:
8032 case R_PPC64_GNU_VTENTRY:
8035 /* GOT16 relocations. Like an ADDR16 using the symbol's
8036 address in the GOT as relocation value instead of the
8037 symbol's value itself. Also, create a GOT entry for the
8038 symbol and put the symbol value there. */
8039 case R_PPC64_GOT_TLSGD16:
8040 case R_PPC64_GOT_TLSGD16_LO:
8041 case R_PPC64_GOT_TLSGD16_HI:
8042 case R_PPC64_GOT_TLSGD16_HA:
8043 tls_type = TLS_TLS | TLS_GD;
8046 case R_PPC64_GOT_TLSLD16:
8047 case R_PPC64_GOT_TLSLD16_LO:
8048 case R_PPC64_GOT_TLSLD16_HI:
8049 case R_PPC64_GOT_TLSLD16_HA:
8050 tls_type = TLS_TLS | TLS_LD;
8053 case R_PPC64_GOT_TPREL16_DS:
8054 case R_PPC64_GOT_TPREL16_LO_DS:
8055 case R_PPC64_GOT_TPREL16_HI:
8056 case R_PPC64_GOT_TPREL16_HA:
8057 tls_type = TLS_TLS | TLS_TPREL;
8060 case R_PPC64_GOT_DTPREL16_DS:
8061 case R_PPC64_GOT_DTPREL16_LO_DS:
8062 case R_PPC64_GOT_DTPREL16_HI:
8063 case R_PPC64_GOT_DTPREL16_HA:
8064 tls_type = TLS_TLS | TLS_DTPREL;
8068 case R_PPC64_GOT16_LO:
8069 case R_PPC64_GOT16_HI:
8070 case R_PPC64_GOT16_HA:
8071 case R_PPC64_GOT16_DS:
8072 case R_PPC64_GOT16_LO_DS:
8075 /* Relocation is to the entry for this symbol in the global
8080 unsigned long indx = 0;
8082 if (tls_type == (TLS_TLS | TLS_LD)
8084 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
8085 offp = &ppc64_tlsld_got (input_bfd)->offset;
8088 struct got_entry *ent;
8092 bfd_boolean dyn = htab->elf.dynamic_sections_created;
8093 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8095 && SYMBOL_REFERENCES_LOCAL (info, h)))
8096 /* This is actually a static link, or it is a
8097 -Bsymbolic link and the symbol is defined
8098 locally, or the symbol was forced to be local
8099 because of a version file. */
8104 unresolved_reloc = FALSE;
8110 if (local_got_ents == NULL)
8112 ent = local_got_ents[r_symndx];
8115 for (; ent != NULL; ent = ent->next)
8116 if (ent->addend == rel->r_addend
8117 && ent->owner == input_bfd
8118 && ent->tls_type == tls_type)
8122 offp = &ent->got.offset;
8125 got = ppc64_elf_tdata (input_bfd)->got;
8129 /* The offset must always be a multiple of 8. We use the
8130 least significant bit to record whether we have already
8131 processed this entry. */
8137 /* Generate relocs for the dynamic linker, except in
8138 the case of TLSLD where we'll use one entry per
8140 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
8143 if ((info->shared || indx != 0)
8145 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8146 || h->root.type != bfd_link_hash_undefweak))
8148 outrel.r_offset = (got->output_section->vma
8149 + got->output_offset
8151 outrel.r_addend = rel->r_addend;
8152 if (tls_type & (TLS_LD | TLS_GD))
8154 outrel.r_addend = 0;
8155 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
8156 if (tls_type == (TLS_TLS | TLS_GD))
8158 loc = relgot->contents;
8159 loc += (relgot->reloc_count++
8160 * sizeof (Elf64_External_Rela));
8161 bfd_elf64_swap_reloca_out (output_bfd,
8163 outrel.r_offset += 8;
8164 outrel.r_addend = rel->r_addend;
8166 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
8169 else if (tls_type == (TLS_TLS | TLS_DTPREL))
8170 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
8171 else if (tls_type == (TLS_TLS | TLS_TPREL))
8172 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
8175 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
8177 /* Write the .got section contents for the sake
8179 loc = got->contents + off;
8180 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
8184 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
8186 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
8188 outrel.r_addend += relocation;
8189 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8190 outrel.r_addend -= htab->elf.tls_sec->vma;
8192 loc = relgot->contents;
8193 loc += (relgot->reloc_count++
8194 * sizeof (Elf64_External_Rela));
8195 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8198 /* Init the .got section contents here if we're not
8199 emitting a reloc. */
8202 relocation += rel->r_addend;
8203 if (tls_type == (TLS_TLS | TLS_LD))
8205 else if (tls_type != 0)
8207 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
8208 if (tls_type == (TLS_TLS | TLS_TPREL))
8209 relocation += DTP_OFFSET - TP_OFFSET;
8211 if (tls_type == (TLS_TLS | TLS_GD))
8213 bfd_put_64 (output_bfd, relocation,
8214 got->contents + off + 8);
8219 bfd_put_64 (output_bfd, relocation,
8220 got->contents + off);
8224 if (off >= (bfd_vma) -2)
8227 relocation = got->output_offset + off;
8229 /* TOC base (r2) is TOC start plus 0x8000. */
8230 addend = -TOC_BASE_OFF;
8234 case R_PPC64_PLT16_HA:
8235 case R_PPC64_PLT16_HI:
8236 case R_PPC64_PLT16_LO:
8239 /* Relocation is to the entry for this symbol in the
8240 procedure linkage table. */
8242 /* Resolve a PLT reloc against a local symbol directly,
8243 without using the procedure linkage table. */
8247 /* It's possible that we didn't make a PLT entry for this
8248 symbol. This happens when statically linking PIC code,
8249 or when using -Bsymbolic. Go find a match if there is a
8251 if (htab->plt != NULL)
8253 struct plt_entry *ent;
8254 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8255 if (ent->addend == rel->r_addend
8256 && ent->plt.offset != (bfd_vma) -1)
8258 relocation = (htab->plt->output_section->vma
8259 + htab->plt->output_offset
8261 unresolved_reloc = FALSE;
8267 /* Relocation value is TOC base. */
8268 relocation = TOCstart;
8270 relocation += htab->stub_group[input_section->id].toc_off;
8271 else if (unresolved_reloc)
8273 else if (sec != NULL && sec->id <= htab->top_id)
8274 relocation += htab->stub_group[sec->id].toc_off;
8276 unresolved_reloc = TRUE;
8279 /* TOC16 relocs. We want the offset relative to the TOC base,
8280 which is the address of the start of the TOC plus 0x8000.
8281 The TOC consists of sections .got, .toc, .tocbss, and .plt,
8284 case R_PPC64_TOC16_LO:
8285 case R_PPC64_TOC16_HI:
8286 case R_PPC64_TOC16_DS:
8287 case R_PPC64_TOC16_LO_DS:
8288 case R_PPC64_TOC16_HA:
8289 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
8292 /* Relocate against the beginning of the section. */
8293 case R_PPC64_SECTOFF:
8294 case R_PPC64_SECTOFF_LO:
8295 case R_PPC64_SECTOFF_HI:
8296 case R_PPC64_SECTOFF_DS:
8297 case R_PPC64_SECTOFF_LO_DS:
8298 case R_PPC64_SECTOFF_HA:
8300 addend -= sec->output_section->vma;
8304 case R_PPC64_REL14_BRNTAKEN:
8305 case R_PPC64_REL14_BRTAKEN:
8309 case R_PPC64_TPREL16:
8310 case R_PPC64_TPREL16_LO:
8311 case R_PPC64_TPREL16_HI:
8312 case R_PPC64_TPREL16_HA:
8313 case R_PPC64_TPREL16_DS:
8314 case R_PPC64_TPREL16_LO_DS:
8315 case R_PPC64_TPREL16_HIGHER:
8316 case R_PPC64_TPREL16_HIGHERA:
8317 case R_PPC64_TPREL16_HIGHEST:
8318 case R_PPC64_TPREL16_HIGHESTA:
8319 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8321 /* The TPREL16 relocs shouldn't really be used in shared
8322 libs as they will result in DT_TEXTREL being set, but
8323 support them anyway. */
8327 case R_PPC64_DTPREL16:
8328 case R_PPC64_DTPREL16_LO:
8329 case R_PPC64_DTPREL16_HI:
8330 case R_PPC64_DTPREL16_HA:
8331 case R_PPC64_DTPREL16_DS:
8332 case R_PPC64_DTPREL16_LO_DS:
8333 case R_PPC64_DTPREL16_HIGHER:
8334 case R_PPC64_DTPREL16_HIGHERA:
8335 case R_PPC64_DTPREL16_HIGHEST:
8336 case R_PPC64_DTPREL16_HIGHESTA:
8337 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8340 case R_PPC64_DTPMOD64:
8345 case R_PPC64_TPREL64:
8346 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8349 case R_PPC64_DTPREL64:
8350 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8353 /* Relocations that may need to be propagated if this is a
8358 case R_PPC64_ADDR14:
8359 case R_PPC64_ADDR14_BRNTAKEN:
8360 case R_PPC64_ADDR14_BRTAKEN:
8361 case R_PPC64_ADDR16:
8362 case R_PPC64_ADDR16_DS:
8363 case R_PPC64_ADDR16_HA:
8364 case R_PPC64_ADDR16_HI:
8365 case R_PPC64_ADDR16_HIGHER:
8366 case R_PPC64_ADDR16_HIGHERA:
8367 case R_PPC64_ADDR16_HIGHEST:
8368 case R_PPC64_ADDR16_HIGHESTA:
8369 case R_PPC64_ADDR16_LO:
8370 case R_PPC64_ADDR16_LO_DS:
8371 case R_PPC64_ADDR24:
8372 case R_PPC64_ADDR32:
8373 case R_PPC64_ADDR64:
8374 case R_PPC64_UADDR16:
8375 case R_PPC64_UADDR32:
8376 case R_PPC64_UADDR64:
8377 /* r_symndx will be zero only for relocs against symbols
8378 from removed linkonce sections, or sections discarded by
8386 if ((input_section->flags & SEC_ALLOC) == 0)
8389 if (NO_OPD_RELOCS && is_opd)
8394 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8395 || h->root.type != bfd_link_hash_undefweak)
8396 && (MUST_BE_DYN_RELOC (r_type)
8397 || !SYMBOL_CALLS_LOCAL (info, h)))
8398 || (ELIMINATE_COPY_RELOCS
8402 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
8403 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
8404 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
8406 Elf_Internal_Rela outrel;
8407 bfd_boolean skip, relocate;
8412 /* When generating a dynamic object, these relocations
8413 are copied into the output file to be resolved at run
8419 out_off = _bfd_elf_section_offset (output_bfd, info,
8420 input_section, rel->r_offset);
8421 if (out_off == (bfd_vma) -1)
8423 else if (out_off == (bfd_vma) -2)
8424 skip = TRUE, relocate = TRUE;
8425 out_off += (input_section->output_section->vma
8426 + input_section->output_offset);
8427 outrel.r_offset = out_off;
8428 outrel.r_addend = rel->r_addend;
8430 /* Optimize unaligned reloc use. */
8431 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
8432 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
8433 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
8434 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
8435 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
8436 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
8437 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
8438 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
8439 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
8442 memset (&outrel, 0, sizeof outrel);
8443 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
8445 && r_type != R_PPC64_TOC)
8446 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
8449 /* This symbol is local, or marked to become local,
8450 or this is an opd section reloc which must point
8451 at a local function. */
8452 outrel.r_addend += relocation;
8453 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
8455 if (is_opd && h != NULL)
8457 /* Lie about opd entries. This case occurs
8458 when building shared libraries and we
8459 reference a function in another shared
8460 lib. The same thing happens for a weak
8461 definition in an application that's
8462 overridden by a strong definition in a
8463 shared lib. (I believe this is a generic
8464 bug in binutils handling of weak syms.)
8465 In these cases we won't use the opd
8466 entry in this lib. */
8467 unresolved_reloc = FALSE;
8469 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8471 /* We need to relocate .opd contents for ld.so.
8472 Prelink also wants simple and consistent rules
8473 for relocs. This make all RELATIVE relocs have
8474 *r_offset equal to r_addend. */
8481 if (bfd_is_abs_section (sec))
8483 else if (sec == NULL || sec->owner == NULL)
8485 bfd_set_error (bfd_error_bad_value);
8492 osec = sec->output_section;
8493 indx = elf_section_data (osec)->dynindx;
8495 /* We are turning this relocation into one
8496 against a section symbol, so subtract out
8497 the output section's address but not the
8498 offset of the input section in the output
8500 outrel.r_addend -= osec->vma;
8503 outrel.r_info = ELF64_R_INFO (indx, r_type);
8507 sreloc = elf_section_data (input_section)->sreloc;
8511 loc = sreloc->contents;
8512 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
8513 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8515 /* If this reloc is against an external symbol, it will
8516 be computed at runtime, so there's no need to do
8517 anything now. However, for the sake of prelink ensure
8518 that the section contents are a known value. */
8521 unresolved_reloc = FALSE;
8522 /* The value chosen here is quite arbitrary as ld.so
8523 ignores section contents except for the special
8524 case of .opd where the contents might be accessed
8525 before relocation. Choose zero, as that won't
8526 cause reloc overflow. */
8529 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
8530 to improve backward compatibility with older
8532 if (r_type == R_PPC64_ADDR64)
8533 addend = outrel.r_addend;
8534 /* Adjust pc_relative relocs to have zero in *r_offset. */
8535 else if (ppc64_elf_howto_table[r_type]->pc_relative)
8536 addend = (input_section->output_section->vma
8537 + input_section->output_offset
8544 case R_PPC64_GLOB_DAT:
8545 case R_PPC64_JMP_SLOT:
8546 case R_PPC64_RELATIVE:
8547 /* We shouldn't ever see these dynamic relocs in relocatable
8551 case R_PPC64_PLTGOT16:
8552 case R_PPC64_PLTGOT16_DS:
8553 case R_PPC64_PLTGOT16_HA:
8554 case R_PPC64_PLTGOT16_HI:
8555 case R_PPC64_PLTGOT16_LO:
8556 case R_PPC64_PLTGOT16_LO_DS:
8557 case R_PPC64_PLTREL32:
8558 case R_PPC64_PLTREL64:
8559 /* These ones haven't been implemented yet. */
8561 (*_bfd_error_handler)
8562 (_("%s: relocation %s is not supported for symbol %s."),
8563 bfd_archive_filename (input_bfd),
8564 ppc64_elf_howto_table[r_type]->name, sym_name);
8566 bfd_set_error (bfd_error_invalid_operation);
8571 /* Do any further special processing. */
8577 case R_PPC64_ADDR16_HA:
8578 case R_PPC64_ADDR16_HIGHERA:
8579 case R_PPC64_ADDR16_HIGHESTA:
8580 case R_PPC64_GOT16_HA:
8581 case R_PPC64_PLTGOT16_HA:
8582 case R_PPC64_PLT16_HA:
8583 case R_PPC64_TOC16_HA:
8584 case R_PPC64_SECTOFF_HA:
8585 case R_PPC64_TPREL16_HA:
8586 case R_PPC64_DTPREL16_HA:
8587 case R_PPC64_GOT_TLSGD16_HA:
8588 case R_PPC64_GOT_TLSLD16_HA:
8589 case R_PPC64_GOT_TPREL16_HA:
8590 case R_PPC64_GOT_DTPREL16_HA:
8591 case R_PPC64_TPREL16_HIGHER:
8592 case R_PPC64_TPREL16_HIGHERA:
8593 case R_PPC64_TPREL16_HIGHEST:
8594 case R_PPC64_TPREL16_HIGHESTA:
8595 case R_PPC64_DTPREL16_HIGHER:
8596 case R_PPC64_DTPREL16_HIGHERA:
8597 case R_PPC64_DTPREL16_HIGHEST:
8598 case R_PPC64_DTPREL16_HIGHESTA:
8599 /* It's just possible that this symbol is a weak symbol
8600 that's not actually defined anywhere. In that case,
8601 'sec' would be NULL, and we should leave the symbol
8602 alone (it will be set to zero elsewhere in the link). */
8604 /* Add 0x10000 if sign bit in 0:15 is set.
8605 Bits 0:15 are not used. */
8609 case R_PPC64_ADDR16_DS:
8610 case R_PPC64_ADDR16_LO_DS:
8611 case R_PPC64_GOT16_DS:
8612 case R_PPC64_GOT16_LO_DS:
8613 case R_PPC64_PLT16_LO_DS:
8614 case R_PPC64_SECTOFF_DS:
8615 case R_PPC64_SECTOFF_LO_DS:
8616 case R_PPC64_TOC16_DS:
8617 case R_PPC64_TOC16_LO_DS:
8618 case R_PPC64_PLTGOT16_DS:
8619 case R_PPC64_PLTGOT16_LO_DS:
8620 case R_PPC64_GOT_TPREL16_DS:
8621 case R_PPC64_GOT_TPREL16_LO_DS:
8622 case R_PPC64_GOT_DTPREL16_DS:
8623 case R_PPC64_GOT_DTPREL16_LO_DS:
8624 case R_PPC64_TPREL16_DS:
8625 case R_PPC64_TPREL16_LO_DS:
8626 case R_PPC64_DTPREL16_DS:
8627 case R_PPC64_DTPREL16_LO_DS:
8628 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
8630 /* If this reloc is against an lq insn, then the value must be
8631 a multiple of 16. This is somewhat of a hack, but the
8632 "correct" way to do this by defining _DQ forms of all the
8633 _DS relocs bloats all reloc switches in this file. It
8634 doesn't seem to make much sense to use any of these relocs
8635 in data, so testing the insn should be safe. */
8636 if ((insn & (0x3f << 26)) == (56u << 26))
8638 if (((relocation + addend) & mask) != 0)
8640 (*_bfd_error_handler)
8641 (_("%s: error: relocation %s not a multiple of %d"),
8642 bfd_archive_filename (input_bfd),
8643 ppc64_elf_howto_table[r_type]->name,
8645 bfd_set_error (bfd_error_bad_value);
8652 case R_PPC64_REL14_BRNTAKEN:
8653 case R_PPC64_REL14_BRTAKEN:
8654 max_br_offset = 1 << 15;
8658 max_br_offset = 1 << 25;
8661 /* If the branch is out of reach or the TOC register needs
8662 adjusting, then redirect the call to the local stub for
8664 from = (rel->r_offset
8665 + input_section->output_offset
8666 + input_section->output_section->vma);
8667 if ((relocation + addend - from + max_br_offset >= 2 * max_br_offset
8669 && sec->output_section != NULL
8670 && sec->id <= htab->top_id
8671 && (htab->stub_group[sec->id].toc_off
8672 != htab->stub_group[input_section->id].toc_off)))
8673 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
8674 rel, htab)) != NULL)
8676 /* Munge up the value and addend so that we call the stub
8677 rather than the procedure directly. */
8678 relocation = (stub_entry->stub_offset
8679 + stub_entry->stub_sec->output_offset
8680 + stub_entry->stub_sec->output_section->vma);
8686 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8687 because such sections are not SEC_ALLOC and thus ld.so will
8688 not process them. */
8689 if (unresolved_reloc
8690 && !((input_section->flags & SEC_DEBUGGING) != 0
8691 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
8693 (*_bfd_error_handler)
8694 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
8695 bfd_archive_filename (input_bfd),
8696 bfd_get_section_name (input_bfd, input_section),
8697 (long) rel->r_offset,
8698 ppc64_elf_howto_table[(int) r_type]->name,
8699 h->root.root.string);
8703 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
8711 if (r != bfd_reloc_ok)
8713 if (sym_name == NULL)
8714 sym_name = "(null)";
8715 if (r == bfd_reloc_overflow)
8720 && h->root.type == bfd_link_hash_undefweak
8721 && ppc64_elf_howto_table[r_type]->pc_relative)
8723 /* Assume this is a call protected by other code that
8724 detects the symbol is undefined. If this is the case,
8725 we can safely ignore the overflow. If not, the
8726 program is hosed anyway, and a little warning isn't
8732 if (!((*info->callbacks->reloc_overflow)
8733 (info, sym_name, ppc64_elf_howto_table[r_type]->name,
8734 rel->r_addend, input_bfd, input_section, rel->r_offset)))
8739 (*_bfd_error_handler)
8740 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
8741 bfd_archive_filename (input_bfd),
8742 bfd_get_section_name (input_bfd, input_section),
8743 (long) rel->r_offset,
8744 ppc64_elf_howto_table[r_type]->name,
8755 /* Adjust the value of any local symbols in opd sections. */
8758 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
8759 const char *name ATTRIBUTE_UNUSED,
8760 Elf_Internal_Sym *elfsym,
8761 asection *input_sec,
8762 struct elf_link_hash_entry *h)
8768 || input_sec == NULL
8769 || ppc64_elf_section_data (input_sec) == NULL
8770 || (adjust = ppc64_elf_section_data (input_sec)->opd.adjust) == NULL)
8773 value = elfsym->st_value - input_sec->output_offset;
8774 if (!info->relocatable)
8775 value -= input_sec->output_section->vma;
8777 elfsym->st_value += adjust[value / 24];
8781 /* Finish up dynamic symbol handling. We set the contents of various
8782 dynamic sections here. */
8785 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
8786 struct bfd_link_info *info,
8787 struct elf_link_hash_entry *h,
8788 Elf_Internal_Sym *sym)
8790 struct ppc_link_hash_table *htab;
8793 htab = ppc_hash_table (info);
8794 dynobj = htab->elf.dynobj;
8796 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
8798 struct plt_entry *ent;
8799 Elf_Internal_Rela rela;
8802 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8803 if (ent->plt.offset != (bfd_vma) -1)
8805 /* This symbol has an entry in the procedure linkage
8806 table. Set it up. */
8808 if (htab->plt == NULL
8809 || htab->relplt == NULL
8810 || htab->glink == NULL)
8813 /* Create a JMP_SLOT reloc to inform the dynamic linker to
8814 fill in the PLT entry. */
8815 rela.r_offset = (htab->plt->output_section->vma
8816 + htab->plt->output_offset
8818 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
8819 rela.r_addend = ent->addend;
8821 loc = htab->relplt->contents;
8822 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
8823 * sizeof (Elf64_External_Rela));
8824 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8828 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
8830 Elf_Internal_Rela rela;
8833 /* This symbol needs a copy reloc. Set it up. */
8835 if (h->dynindx == -1
8836 || (h->root.type != bfd_link_hash_defined
8837 && h->root.type != bfd_link_hash_defweak)
8838 || htab->relbss == NULL)
8841 rela.r_offset = (h->root.u.def.value
8842 + h->root.u.def.section->output_section->vma
8843 + h->root.u.def.section->output_offset);
8844 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
8846 loc = htab->relbss->contents;
8847 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
8848 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8851 /* Mark some specially defined symbols as absolute. */
8852 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
8853 sym->st_shndx = SHN_ABS;
8858 /* Used to decide how to sort relocs in an optimal manner for the
8859 dynamic linker, before writing them out. */
8861 static enum elf_reloc_type_class
8862 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8864 enum elf_ppc64_reloc_type r_type;
8866 r_type = ELF64_R_TYPE (rela->r_info);
8869 case R_PPC64_RELATIVE:
8870 return reloc_class_relative;
8871 case R_PPC64_JMP_SLOT:
8872 return reloc_class_plt;
8874 return reloc_class_copy;
8876 return reloc_class_normal;
8880 /* Finish up the dynamic sections. */
8883 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
8884 struct bfd_link_info *info)
8886 struct ppc_link_hash_table *htab;
8890 htab = ppc_hash_table (info);
8891 dynobj = htab->elf.dynobj;
8892 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8894 if (htab->elf.dynamic_sections_created)
8896 Elf64_External_Dyn *dyncon, *dynconend;
8898 if (sdyn == NULL || htab->got == NULL)
8901 dyncon = (Elf64_External_Dyn *) sdyn->contents;
8902 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
8903 for (; dyncon < dynconend; dyncon++)
8905 Elf_Internal_Dyn dyn;
8908 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
8915 case DT_PPC64_GLINK:
8917 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8918 /* We stupidly defined DT_PPC64_GLINK to be the start
8919 of glink rather than the first entry point, which is
8920 what ld.so needs, and now have a bigger stub to
8921 support automatic multiple TOCs. */
8922 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
8926 s = bfd_get_section_by_name (output_bfd, ".opd");
8929 dyn.d_un.d_ptr = s->vma;
8932 case DT_PPC64_OPDSZ:
8933 s = bfd_get_section_by_name (output_bfd, ".opd");
8936 dyn.d_un.d_val = s->_raw_size;
8941 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8946 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8950 dyn.d_un.d_val = htab->relplt->_raw_size;
8954 /* Don't count procedure linkage table relocs in the
8955 overall reloc count. */
8959 dyn.d_un.d_val -= s->_raw_size;
8963 /* We may not be using the standard ELF linker script.
8964 If .rela.plt is the first .rela section, we adjust
8965 DT_RELA to not include it. */
8969 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
8971 dyn.d_un.d_ptr += s->_raw_size;
8975 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
8979 if (htab->got != NULL && htab->got->_raw_size != 0)
8981 /* Fill in the first entry in the global offset table.
8982 We use it to hold the link-time TOCbase. */
8983 bfd_put_64 (output_bfd,
8984 elf_gp (output_bfd) + TOC_BASE_OFF,
8985 htab->got->contents);
8987 /* Set .got entry size. */
8988 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
8991 if (htab->plt != NULL && htab->plt->_raw_size != 0)
8993 /* Set .plt entry size. */
8994 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
8998 /* We need to handle writing out multiple GOT sections ourselves,
8999 since we didn't add them to DYNOBJ. */
9000 while ((dynobj = dynobj->link_next) != NULL)
9003 s = ppc64_elf_tdata (dynobj)->got;
9005 && s->_raw_size != 0
9006 && s->output_section != bfd_abs_section_ptr
9007 && !bfd_set_section_contents (output_bfd, s->output_section,
9008 s->contents, s->output_offset,
9011 s = ppc64_elf_tdata (dynobj)->relgot;
9013 && s->_raw_size != 0
9014 && s->output_section != bfd_abs_section_ptr
9015 && !bfd_set_section_contents (output_bfd, s->output_section,
9016 s->contents, s->output_offset,
9024 #include "elf64-target.h"
projects / FreeBSD / releng / 8.1.git / blob