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ppc64 section group handling
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
b90efa5b 2 Copyright (C) 1999-2015 Free Software Foundation, Inc.
5bd4f169
AM		 3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
32ca9640 5 Largely rewritten by Alan Modra.
5bd4f169 6
ae9a127f 7 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 8
ae9a127f
NC		 9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
cd123cb7 11 the Free Software Foundation; either version 3 of the License, or
ae9a127f 12 (at your option) any later version.
5bd4f169 13
ae9a127f
NC		 14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
5bd4f169 18
4ce794b7
AM		 19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 22
cd123cb7 23
4ce794b7
AM		 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 */
5bd4f169 27
3db64b00 28#include "sysdep.h"
183e98be 29#include <stdarg.h>
5bd4f169 30#include "bfd.h"
5bd4f169
AM		 31#include "bfdlink.h"
32#include "libbfd.h"
33#include "elf-bfd.h"
04c9666a 34#include "elf/ppc64.h"
5d1634d7 35#include "elf64-ppc.h"
58d180e8 36#include "dwarf2.h"
5bd4f169 37
805fc799 38static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 40static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 54static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016 56static bfd_vma opd_entry_value
aef36ac1 57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
5bd4f169 58
6d00b590 59#define TARGET_LITTLE_SYM powerpc_elf64_le_vec
ad8e1ba5 60#define TARGET_LITTLE_NAME "elf64-powerpcle"
6d00b590 61#define TARGET_BIG_SYM powerpc_elf64_vec
ad8e1ba5
AM		 62#define TARGET_BIG_NAME "elf64-powerpc"
63#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 64#define ELF_TARGET_ID PPC64_ELF_DATA
ad8e1ba5
AM		 65#define ELF_MACHINE_CODE EM_PPC64
66#define ELF_MAXPAGESIZE 0x10000
04c6a44c 67#define ELF_COMMONPAGESIZE 0x10000
ad8e1ba5
AM		 68#define elf_info_to_howto ppc64_elf_info_to_howto
69
70#define elf_backend_want_got_sym 0
71#define elf_backend_want_plt_sym 0
72#define elf_backend_plt_alignment 3
73#define elf_backend_plt_not_loaded 1
ad8e1ba5 74#define elf_backend_got_header_size 8
ad8e1ba5
AM		 75#define elf_backend_can_gc_sections 1
76#define elf_backend_can_refcount 1
77#define elf_backend_rela_normal 1
6bfdb61b 78#define elf_backend_default_execstack 0
ad8e1ba5 79
e717da7e 80#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 81#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
aa374f67 82#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ee67d69a
AM		 83#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84#define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
ad8e1ba5
AM		 85#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
90e3cdf2 87#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
aa374f67 88#define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
ad8e1ba5
AM		 89
90#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 91#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 93#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM		 94#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 96#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
f6c7c3e8 97#define elf_backend_check_directives ppc64_elf_before_check_relocs
e5034e59 98#define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
8387904d 99#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 100#define elf_backend_check_relocs ppc64_elf_check_relocs
74f0fb50 101#define elf_backend_gc_keep ppc64_elf_gc_keep
64d03ab5 102#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM		 103#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106#define elf_backend_hide_symbol ppc64_elf_hide_symbol
9f296da3 107#define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
ad8e1ba5
AM		 108#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
a345bc8d 110#define elf_backend_hash_symbol ppc64_elf_hash_symbol
74541ad4 111#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 112#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
AM		 113#define elf_backend_relocate_section ppc64_elf_relocate_section
114#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 117#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 118#define elf_backend_special_sections ppc64_elf_special_sections
6911b7dc 119#define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
ad8e1ba5 120
5bd4f169
AM		 121/* The name of the dynamic interpreter. This is put in the .interp
122 section. */
123#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
124
125/* The size in bytes of an entry in the procedure linkage table. */
b9e5796b 126#define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
5bd4f169
AM		 127
128/* The initial size of the plt reserved for the dynamic linker. */
b9e5796b 129#define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
5bd4f169 130
a078d95a
AM		 131/* Offsets to some stack save slots. */
132#define STK_LR 16
133#define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
eb8d7fda 134/* This one is dodgy. ELFv2 does not have a linker word, so use the
a078d95a
AM		 135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137#define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
138
5bd4f169 139/* TOC base pointers offset from start of TOC. */
411e1bfb 140#define TOC_BASE_OFF 0x8000
a27e685f
AM		 141/* TOC base alignment. */
142#define TOC_BASE_ALIGN 256
411e1bfb
AM		 143
144/* Offset of tp and dtp pointers from start of TLS block. */
145#define TP_OFFSET 0x7000
146#define DTP_OFFSET 0x8000
5bd4f169 147
ad8e1ba5
AM		 148/* .plt call stub instructions. The normal stub is like this, but
149 sometimes the .plt entry crosses a 64k boundary and we need to
71a39c98 150 insert an addi to adjust r11. */
a078d95a 151#define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
71a39c98
AM		 152#define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
153#define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
154#define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
155#define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
156#define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
5d1634d7
AM		 157#define BCTR 0x4e800420 /* bctr */
158
71a39c98 159#define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
ad8e1ba5
AM		 160#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
161#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
162
71a39c98
AM		 163#define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
164#define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
165#define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
794e51c0
AM		 166#define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
167#define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
168#define BNECTR 0x4ca20420 /* bnectr+ */
169#define BNECTR_P4 0x4ce20420 /* bnectr+ */
170
71a39c98 171#define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
ac2df442
AM		 172#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
173#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
174
a078d95a 175#define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
ad8e1ba5 176
397998fc 177#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
a345bc8d
AM		 178#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
179#define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
180
ee4bf8d2 181/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 182#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM		 183 /* 0: */
184 /* .quad plt0-1f */
185 /* __glink: */
186#define MFLR_R12 0x7d8802a6 /* mflr %12 */
187#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
188 /* 1: */
189#define MFLR_R11 0x7d6802a6 /* mflr %11 */
71a39c98 190 /* ld %2,(0b-1b)(%11) */
ee4bf8d2 191#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
71a39c98
AM		 192#define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
193 /* ld %12,0(%11) */
194 /* ld %2,8(%11) */
195 /* mtctr %12 */
196 /* ld %11,16(%11) */
ee4bf8d2 197 /* bctr */
b9e5796b
AM		 198#define MFLR_R0 0x7c0802a6 /* mflr %r0 */
199#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
200#define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
201#define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
202#define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
5d1634d7
AM		 203
204/* Pad with this. */
205#define NOP 0x60000000
206
721956f4
AM		 207/* Some other nops. */
208#define CROR_151515 0x4def7b82
209#define CROR_313131 0x4ffffb82
210
cedb70c5 211/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 212#define LI_R0_0 0x38000000 /* li %r0,0 */
213#define B_DOT 0x48000000 /* b . */
214
215/* After that, we need two instructions to load the index, followed by
216 a branch. */
217#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 218#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 219
deb0e272
AM		 220/* Instructions used by the save and restore reg functions. */
221#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
222#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
223#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
224#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 225#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
226#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 227#define LI_R12_0 0x39800000 /* li %r12,0 */
228#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
229#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
230#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 231#define BLR 0x4e800020 /* blr */
232
41bd81ab
AM		 233/* Since .opd is an array of descriptors and each entry will end up
234 with identical R_PPC64_RELATIVE relocs, there is really no need to
235 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 236 relocate .opd without reloc entries. */
41bd81ab
AM		 237#ifndef NO_OPD_RELOCS
238#define NO_OPD_RELOCS 0
239#endif
810d4e75
AM		 240
241static inline int
242abiversion (bfd *abfd)
243{
244 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
245}
246
247static inline void
248set_abiversion (bfd *abfd, int ver)
249{
250 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
251 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
252}
5bd4f169 253\f
f5e87a1d 254#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 255
5bd4f169 256/* Relocation HOWTO's. */
04c9666a 257static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 258
259static reloc_howto_type ppc64_elf_howto_raw[] = {
260 /* This reloc does nothing. */
261 HOWTO (R_PPC64_NONE, /* type */
262 0, /* rightshift */
6346d5ca
AM		 263 3, /* size (0 = byte, 1 = short, 2 = long) */
264 0, /* bitsize */
b34976b6 265 FALSE, /* pc_relative */
5bd4f169 266 0, /* bitpos */
f5e87a1d 267 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_NONE", /* name */
b34976b6 270 FALSE, /* partial_inplace */
d006db6c 271 0, /* src_mask */
5bd4f169 272 0, /* dst_mask */
b34976b6 273 FALSE), /* pcrel_offset */
5bd4f169
AM		 274
275 /* A standard 32 bit relocation. */
276 HOWTO (R_PPC64_ADDR32, /* type */
277 0, /* rightshift */
278 2, /* size (0 = byte, 1 = short, 2 = long) */
279 32, /* bitsize */
b34976b6 280 FALSE, /* pc_relative */
5bd4f169
AM		 281 0, /* bitpos */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_PPC64_ADDR32", /* name */
b34976b6 285 FALSE, /* partial_inplace */
5bd4f169
AM		 286 0, /* src_mask */
287 0xffffffff, /* dst_mask */
b34976b6 288 FALSE), /* pcrel_offset */
5bd4f169
AM		 289
290 /* An absolute 26 bit branch; the lower two bits must be zero.
291 FIXME: we don't check that, we just clear them. */
292 HOWTO (R_PPC64_ADDR24, /* type */
293 0, /* rightshift */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
295 26, /* bitsize */
b34976b6 296 FALSE, /* pc_relative */
5bd4f169
AM		 297 0, /* bitpos */
298 complain_overflow_bitfield, /* complain_on_overflow */
299 bfd_elf_generic_reloc, /* special_function */
300 "R_PPC64_ADDR24", /* name */
b34976b6 301 FALSE, /* partial_inplace */
d006db6c 302 0, /* src_mask */
f5e87a1d 303 0x03fffffc, /* dst_mask */
b34976b6 304 FALSE), /* pcrel_offset */
5bd4f169
AM		 305
306 /* A standard 16 bit relocation. */
307 HOWTO (R_PPC64_ADDR16, /* type */
308 0, /* rightshift */
309 1, /* size (0 = byte, 1 = short, 2 = long) */
310 16, /* bitsize */
b34976b6 311 FALSE, /* pc_relative */
5bd4f169
AM		 312 0, /* bitpos */
313 complain_overflow_bitfield, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_PPC64_ADDR16", /* name */
b34976b6 316 FALSE, /* partial_inplace */
5bd4f169
AM		 317 0, /* src_mask */
318 0xffff, /* dst_mask */
b34976b6 319 FALSE), /* pcrel_offset */
5bd4f169
AM		 320
321 /* A 16 bit relocation without overflow. */
322 HOWTO (R_PPC64_ADDR16_LO, /* type */
323 0, /* rightshift */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
325 16, /* bitsize */
b34976b6 326 FALSE, /* pc_relative */
5bd4f169
AM		 327 0, /* bitpos */
328 complain_overflow_dont,/* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_PPC64_ADDR16_LO", /* name */
b34976b6 331 FALSE, /* partial_inplace */
5bd4f169
AM		 332 0, /* src_mask */
333 0xffff, /* dst_mask */
b34976b6 334 FALSE), /* pcrel_offset */
5bd4f169
AM		 335
336 /* Bits 16-31 of an address. */
337 HOWTO (R_PPC64_ADDR16_HI, /* type */
338 16, /* rightshift */
339 1, /* size (0 = byte, 1 = short, 2 = long) */
340 16, /* bitsize */
b34976b6 341 FALSE, /* pc_relative */
5bd4f169 342 0, /* bitpos */
f9c6b907 343 complain_overflow_signed, /* complain_on_overflow */
5bd4f169
AM		 344 bfd_elf_generic_reloc, /* special_function */
345 "R_PPC64_ADDR16_HI", /* name */
b34976b6 346 FALSE, /* partial_inplace */
5bd4f169
AM		 347 0, /* src_mask */
348 0xffff, /* dst_mask */
b34976b6 349 FALSE), /* pcrel_offset */
5bd4f169
AM		 350
351 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
352 bits, treated as a signed number, is negative. */
353 HOWTO (R_PPC64_ADDR16_HA, /* type */
354 16, /* rightshift */
355 1, /* size (0 = byte, 1 = short, 2 = long) */
356 16, /* bitsize */
b34976b6 357 FALSE, /* pc_relative */
5bd4f169 358 0, /* bitpos */
f9c6b907 359 complain_overflow_signed, /* complain_on_overflow */
805fc799 360 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 361 "R_PPC64_ADDR16_HA", /* name */
b34976b6 362 FALSE, /* partial_inplace */
5bd4f169
AM		 363 0, /* src_mask */
364 0xffff, /* dst_mask */
b34976b6 365 FALSE), /* pcrel_offset */
5bd4f169
AM		 366
367 /* An absolute 16 bit branch; the lower two bits must be zero.
368 FIXME: we don't check that, we just clear them. */
369 HOWTO (R_PPC64_ADDR14, /* type */
370 0, /* rightshift */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
372 16, /* bitsize */
b34976b6 373 FALSE, /* pc_relative */
5bd4f169 374 0, /* bitpos */
b80eed39 375 complain_overflow_signed, /* complain_on_overflow */
2441e016 376 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 377 "R_PPC64_ADDR14", /* name */
b34976b6 378 FALSE, /* partial_inplace */
d006db6c 379 0, /* src_mask */
f5e87a1d 380 0x0000fffc, /* dst_mask */
b34976b6 381 FALSE), /* pcrel_offset */
5bd4f169
AM		 382
383 /* An absolute 16 bit branch, for which bit 10 should be set to
384 indicate that the branch is expected to be taken. The lower two
385 bits must be zero. */
386 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
387 0, /* rightshift */
388 2, /* size (0 = byte, 1 = short, 2 = long) */
389 16, /* bitsize */
b34976b6 390 FALSE, /* pc_relative */
5bd4f169 391 0, /* bitpos */
b80eed39 392 complain_overflow_signed, /* complain_on_overflow */
805fc799 393 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 394 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 395 FALSE, /* partial_inplace */
d006db6c 396 0, /* src_mask */
f5e87a1d 397 0x0000fffc, /* dst_mask */
b34976b6 398 FALSE), /* pcrel_offset */
5bd4f169
AM		 399
400 /* An absolute 16 bit branch, for which bit 10 should be set to
401 indicate that the branch is not expected to be taken. The lower
402 two bits must be zero. */
403 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
404 0, /* rightshift */
405 2, /* size (0 = byte, 1 = short, 2 = long) */
406 16, /* bitsize */
b34976b6 407 FALSE, /* pc_relative */
5bd4f169 408 0, /* bitpos */
b80eed39 409 complain_overflow_signed, /* complain_on_overflow */
805fc799 410 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 411 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 412 FALSE, /* partial_inplace */
d006db6c 413 0, /* src_mask */
f5e87a1d 414 0x0000fffc, /* dst_mask */
b34976b6 415 FALSE), /* pcrel_offset */
5bd4f169
AM		 416
417 /* A relative 26 bit branch; the lower two bits must be zero. */
418 HOWTO (R_PPC64_REL24, /* type */
419 0, /* rightshift */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
421 26, /* bitsize */
b34976b6 422 TRUE, /* pc_relative */
5bd4f169
AM		 423 0, /* bitpos */
424 complain_overflow_signed, /* complain_on_overflow */
2441e016 425 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 426 "R_PPC64_REL24", /* name */
b34976b6 427 FALSE, /* partial_inplace */
d006db6c 428 0, /* src_mask */
f5e87a1d 429 0x03fffffc, /* dst_mask */
b34976b6 430 TRUE), /* pcrel_offset */
5bd4f169
AM		 431
432 /* A relative 16 bit branch; the lower two bits must be zero. */
433 HOWTO (R_PPC64_REL14, /* type */
434 0, /* rightshift */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
436 16, /* bitsize */
b34976b6 437 TRUE, /* pc_relative */
5bd4f169
AM		 438 0, /* bitpos */
439 complain_overflow_signed, /* complain_on_overflow */
2441e016 440 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 441 "R_PPC64_REL14", /* name */
b34976b6 442 FALSE, /* partial_inplace */
d006db6c 443 0, /* src_mask */
f5e87a1d 444 0x0000fffc, /* dst_mask */
b34976b6 445 TRUE), /* pcrel_offset */
5bd4f169
AM		 446
447 /* A relative 16 bit branch. Bit 10 should be set to indicate that
448 the branch is expected to be taken. The lower two bits must be
449 zero. */
450 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
451 0, /* rightshift */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
453 16, /* bitsize */
b34976b6 454 TRUE, /* pc_relative */
5bd4f169
AM		 455 0, /* bitpos */
456 complain_overflow_signed, /* complain_on_overflow */
805fc799 457 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 458 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 459 FALSE, /* partial_inplace */
d006db6c 460 0, /* src_mask */
f5e87a1d 461 0x0000fffc, /* dst_mask */
b34976b6 462 TRUE), /* pcrel_offset */
5bd4f169
AM		 463
464 /* A relative 16 bit branch. Bit 10 should be set to indicate that
465 the branch is not expected to be taken. The lower two bits must
466 be zero. */
467 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
468 0, /* rightshift */
469 2, /* size (0 = byte, 1 = short, 2 = long) */
470 16, /* bitsize */
b34976b6 471 TRUE, /* pc_relative */
5bd4f169
AM		 472 0, /* bitpos */
473 complain_overflow_signed, /* complain_on_overflow */
805fc799 474 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 475 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 476 FALSE, /* partial_inplace */
d006db6c 477 0, /* src_mask */
f5e87a1d 478 0x0000fffc, /* dst_mask */
b34976b6 479 TRUE), /* pcrel_offset */
5bd4f169
AM		 480
481 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
482 symbol. */
483 HOWTO (R_PPC64_GOT16, /* type */
484 0, /* rightshift */
485 1, /* size (0 = byte, 1 = short, 2 = long) */
486 16, /* bitsize */
b34976b6 487 FALSE, /* pc_relative */
5bd4f169
AM		 488 0, /* bitpos */
489 complain_overflow_signed, /* complain_on_overflow */
805fc799 490 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 491 "R_PPC64_GOT16", /* name */
b34976b6 492 FALSE, /* partial_inplace */
5bd4f169
AM		 493 0, /* src_mask */
494 0xffff, /* dst_mask */
b34976b6 495 FALSE), /* pcrel_offset */
5bd4f169
AM		 496
497 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
498 the symbol. */
499 HOWTO (R_PPC64_GOT16_LO, /* type */
500 0, /* rightshift */
501 1, /* size (0 = byte, 1 = short, 2 = long) */
502 16, /* bitsize */
b34976b6 503 FALSE, /* pc_relative */
5bd4f169
AM		 504 0, /* bitpos */
505 complain_overflow_dont, /* complain_on_overflow */
805fc799 506 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 507 "R_PPC64_GOT16_LO", /* name */
b34976b6 508 FALSE, /* partial_inplace */
5bd4f169
AM		 509 0, /* src_mask */
510 0xffff, /* dst_mask */
b34976b6 511 FALSE), /* pcrel_offset */
5bd4f169
AM		 512
513 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
514 the symbol. */
515 HOWTO (R_PPC64_GOT16_HI, /* type */
516 16, /* rightshift */
517 1, /* size (0 = byte, 1 = short, 2 = long) */
518 16, /* bitsize */
b34976b6 519 FALSE, /* pc_relative */
5bd4f169 520 0, /* bitpos */
f9c6b907 521 complain_overflow_signed,/* complain_on_overflow */
805fc799 522 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 523 "R_PPC64_GOT16_HI", /* name */
b34976b6 524 FALSE, /* partial_inplace */
5bd4f169
AM		 525 0, /* src_mask */
526 0xffff, /* dst_mask */
b34976b6 527 FALSE), /* pcrel_offset */
5bd4f169
AM		 528
529 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
530 the symbol. */
531 HOWTO (R_PPC64_GOT16_HA, /* type */
532 16, /* rightshift */
533 1, /* size (0 = byte, 1 = short, 2 = long) */
534 16, /* bitsize */
b34976b6 535 FALSE, /* pc_relative */
5bd4f169 536 0, /* bitpos */
f9c6b907 537 complain_overflow_signed,/* complain_on_overflow */
805fc799 538 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 539 "R_PPC64_GOT16_HA", /* name */
b34976b6 540 FALSE, /* partial_inplace */
5bd4f169
AM		 541 0, /* src_mask */
542 0xffff, /* dst_mask */
b34976b6 543 FALSE), /* pcrel_offset */
5bd4f169
AM		 544
545 /* This is used only by the dynamic linker. The symbol should exist
546 both in the object being run and in some shared library. The
547 dynamic linker copies the data addressed by the symbol from the
548 shared library into the object, because the object being
549 run has to have the data at some particular address. */
550 HOWTO (R_PPC64_COPY, /* type */
551 0, /* rightshift */
f5e87a1d
AM		 552 0, /* this one is variable size */
553 0, /* bitsize */
b34976b6 554 FALSE, /* pc_relative */
5bd4f169 555 0, /* bitpos */
f5e87a1d
AM		 556 complain_overflow_dont, /* complain_on_overflow */
557 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 558 "R_PPC64_COPY", /* name */
b34976b6 559 FALSE, /* partial_inplace */
5bd4f169
AM		 560 0, /* src_mask */
561 0, /* dst_mask */
b34976b6 562 FALSE), /* pcrel_offset */
5bd4f169
AM		 563
564 /* Like R_PPC64_ADDR64, but used when setting global offset table
565 entries. */
566 HOWTO (R_PPC64_GLOB_DAT, /* type */
567 0, /* rightshift */
568 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
569 64, /* bitsize */
b34976b6 570 FALSE, /* pc_relative */
5bd4f169
AM		 571 0, /* bitpos */
572 complain_overflow_dont, /* complain_on_overflow */
805fc799 573 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 574 "R_PPC64_GLOB_DAT", /* name */
b34976b6 575 FALSE, /* partial_inplace */
5bd4f169 576 0, /* src_mask */
f5e87a1d 577 ONES (64), /* dst_mask */
b34976b6 578 FALSE), /* pcrel_offset */
5bd4f169
AM		 579
580 /* Created by the link editor. Marks a procedure linkage table
581 entry for a symbol. */
582 HOWTO (R_PPC64_JMP_SLOT, /* type */
583 0, /* rightshift */
584 0, /* size (0 = byte, 1 = short, 2 = long) */
585 0, /* bitsize */
b34976b6 586 FALSE, /* pc_relative */
5bd4f169
AM		 587 0, /* bitpos */
588 complain_overflow_dont, /* complain_on_overflow */
805fc799 589 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 590 "R_PPC64_JMP_SLOT", /* name */
b34976b6 591 FALSE, /* partial_inplace */
5bd4f169
AM		 592 0, /* src_mask */
593 0, /* dst_mask */
b34976b6 594 FALSE), /* pcrel_offset */
5bd4f169
AM		 595
596 /* Used only by the dynamic linker. When the object is run, this
597 doubleword64 is set to the load address of the object, plus the
598 addend. */
599 HOWTO (R_PPC64_RELATIVE, /* type */
600 0, /* rightshift */
601 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
602 64, /* bitsize */
b34976b6 603 FALSE, /* pc_relative */
5bd4f169
AM		 604 0, /* bitpos */
605 complain_overflow_dont, /* complain_on_overflow */
606 bfd_elf_generic_reloc, /* special_function */
607 "R_PPC64_RELATIVE", /* name */
b34976b6 608 FALSE, /* partial_inplace */
5bd4f169 609 0, /* src_mask */
f5e87a1d 610 ONES (64), /* dst_mask */
b34976b6 611 FALSE), /* pcrel_offset */
5bd4f169
AM		 612
613 /* Like R_PPC64_ADDR32, but may be unaligned. */
614 HOWTO (R_PPC64_UADDR32, /* type */
615 0, /* rightshift */
616 2, /* size (0 = byte, 1 = short, 2 = long) */
617 32, /* bitsize */
b34976b6 618 FALSE, /* pc_relative */
5bd4f169
AM		 619 0, /* bitpos */
620 complain_overflow_bitfield, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_PPC64_UADDR32", /* name */
b34976b6 623 FALSE, /* partial_inplace */
5bd4f169
AM		 624 0, /* src_mask */
625 0xffffffff, /* dst_mask */
b34976b6 626 FALSE), /* pcrel_offset */
5bd4f169
AM		 627
628 /* Like R_PPC64_ADDR16, but may be unaligned. */
629 HOWTO (R_PPC64_UADDR16, /* type */
630 0, /* rightshift */
631 1, /* size (0 = byte, 1 = short, 2 = long) */
632 16, /* bitsize */
b34976b6 633 FALSE, /* pc_relative */
5bd4f169
AM		 634 0, /* bitpos */
635 complain_overflow_bitfield, /* complain_on_overflow */
636 bfd_elf_generic_reloc, /* special_function */
637 "R_PPC64_UADDR16", /* name */
b34976b6 638 FALSE, /* partial_inplace */
5bd4f169
AM		 639 0, /* src_mask */
640 0xffff, /* dst_mask */
b34976b6 641 FALSE), /* pcrel_offset */
5bd4f169
AM		 642
643 /* 32-bit PC relative. */
644 HOWTO (R_PPC64_REL32, /* type */
645 0, /* rightshift */
646 2, /* size (0 = byte, 1 = short, 2 = long) */
647 32, /* bitsize */
b34976b6 648 TRUE, /* pc_relative */
5bd4f169 649 0, /* bitpos */
5bd4f169
AM		 650 complain_overflow_signed, /* complain_on_overflow */
651 bfd_elf_generic_reloc, /* special_function */
652 "R_PPC64_REL32", /* name */
b34976b6 653 FALSE, /* partial_inplace */
5bd4f169
AM		 654 0, /* src_mask */
655 0xffffffff, /* dst_mask */
b34976b6 656 TRUE), /* pcrel_offset */
5bd4f169 657
10ed1bba 658 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 659 HOWTO (R_PPC64_PLT32, /* type */
660 0, /* rightshift */
661 2, /* size (0 = byte, 1 = short, 2 = long) */
662 32, /* bitsize */
b34976b6 663 FALSE, /* pc_relative */
5bd4f169
AM		 664 0, /* bitpos */
665 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 666 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 667 "R_PPC64_PLT32", /* name */
b34976b6 668 FALSE, /* partial_inplace */
5bd4f169 669 0, /* src_mask */
f5e87a1d 670 0xffffffff, /* dst_mask */
b34976b6 671 FALSE), /* pcrel_offset */
5bd4f169
AM		 672
673 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
674 FIXME: R_PPC64_PLTREL32 not supported. */
675 HOWTO (R_PPC64_PLTREL32, /* type */
676 0, /* rightshift */
677 2, /* size (0 = byte, 1 = short, 2 = long) */
678 32, /* bitsize */
b34976b6 679 TRUE, /* pc_relative */
5bd4f169
AM		 680 0, /* bitpos */
681 complain_overflow_signed, /* complain_on_overflow */
682 bfd_elf_generic_reloc, /* special_function */
683 "R_PPC64_PLTREL32", /* name */
b34976b6 684 FALSE, /* partial_inplace */
5bd4f169 685 0, /* src_mask */
f5e87a1d 686 0xffffffff, /* dst_mask */
b34976b6 687 TRUE), /* pcrel_offset */
5bd4f169
AM		 688
689 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
690 the symbol. */
691 HOWTO (R_PPC64_PLT16_LO, /* type */
692 0, /* rightshift */
693 1, /* size (0 = byte, 1 = short, 2 = long) */
694 16, /* bitsize */
b34976b6 695 FALSE, /* pc_relative */
5bd4f169
AM		 696 0, /* bitpos */
697 complain_overflow_dont, /* complain_on_overflow */
805fc799 698 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 699 "R_PPC64_PLT16_LO", /* name */
b34976b6 700 FALSE, /* partial_inplace */
5bd4f169
AM		 701 0, /* src_mask */
702 0xffff, /* dst_mask */
b34976b6 703 FALSE), /* pcrel_offset */
5bd4f169
AM		 704
705 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
706 the symbol. */
707 HOWTO (R_PPC64_PLT16_HI, /* type */
708 16, /* rightshift */
709 1, /* size (0 = byte, 1 = short, 2 = long) */
710 16, /* bitsize */
b34976b6 711 FALSE, /* pc_relative */
5bd4f169 712 0, /* bitpos */
f9c6b907 713 complain_overflow_signed, /* complain_on_overflow */
805fc799 714 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 715 "R_PPC64_PLT16_HI", /* name */
b34976b6 716 FALSE, /* partial_inplace */
5bd4f169
AM		 717 0, /* src_mask */
718 0xffff, /* dst_mask */
b34976b6 719 FALSE), /* pcrel_offset */
5bd4f169
AM		 720
721 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
722 the symbol. */
723 HOWTO (R_PPC64_PLT16_HA, /* type */
724 16, /* rightshift */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
726 16, /* bitsize */
b34976b6 727 FALSE, /* pc_relative */
5bd4f169 728 0, /* bitpos */
f9c6b907 729 complain_overflow_signed, /* complain_on_overflow */
805fc799 730 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 731 "R_PPC64_PLT16_HA", /* name */
b34976b6 732 FALSE, /* partial_inplace */
5bd4f169
AM		 733 0, /* src_mask */
734 0xffff, /* dst_mask */
b34976b6 735 FALSE), /* pcrel_offset */
5bd4f169 736
c061c2d8 737 /* 16-bit section relative relocation. */
5bd4f169
AM		 738 HOWTO (R_PPC64_SECTOFF, /* type */
739 0, /* rightshift */
c061c2d8
AM		 740 1, /* size (0 = byte, 1 = short, 2 = long) */
741 16, /* bitsize */
b34976b6 742 FALSE, /* pc_relative */
5bd4f169 743 0, /* bitpos */
b80eed39 744 complain_overflow_signed, /* complain_on_overflow */
805fc799 745 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 746 "R_PPC64_SECTOFF", /* name */
b34976b6 747 FALSE, /* partial_inplace */
5bd4f169 748 0, /* src_mask */
c061c2d8 749 0xffff, /* dst_mask */
b34976b6 750 FALSE), /* pcrel_offset */
5bd4f169 751
c061c2d8 752 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 753 HOWTO (R_PPC64_SECTOFF_LO, /* type */
754 0, /* rightshift */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
756 16, /* bitsize */
b34976b6 757 FALSE, /* pc_relative */
5bd4f169
AM		 758 0, /* bitpos */
759 complain_overflow_dont, /* complain_on_overflow */
805fc799 760 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 761 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 762 FALSE, /* partial_inplace */
5bd4f169
AM		 763 0, /* src_mask */
764 0xffff, /* dst_mask */
b34976b6 765 FALSE), /* pcrel_offset */
5bd4f169
AM		 766
767 /* 16-bit upper half section relative relocation. */
768 HOWTO (R_PPC64_SECTOFF_HI, /* type */
769 16, /* rightshift */
770 1, /* size (0 = byte, 1 = short, 2 = long) */
771 16, /* bitsize */
b34976b6 772 FALSE, /* pc_relative */
5bd4f169 773 0, /* bitpos */
f9c6b907 774 complain_overflow_signed, /* complain_on_overflow */
805fc799 775 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 776 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 777 FALSE, /* partial_inplace */
5bd4f169
AM		 778 0, /* src_mask */
779 0xffff, /* dst_mask */
b34976b6 780 FALSE), /* pcrel_offset */
5bd4f169
AM		 781
782 /* 16-bit upper half adjusted section relative relocation. */
783 HOWTO (R_PPC64_SECTOFF_HA, /* type */
784 16, /* rightshift */
785 1, /* size (0 = byte, 1 = short, 2 = long) */
786 16, /* bitsize */
b34976b6 787 FALSE, /* pc_relative */
5bd4f169 788 0, /* bitpos */
f9c6b907 789 complain_overflow_signed, /* complain_on_overflow */
805fc799 790 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 791 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 792 FALSE, /* partial_inplace */
5bd4f169
AM		 793 0, /* src_mask */
794 0xffff, /* dst_mask */
b34976b6 795 FALSE), /* pcrel_offset */
5bd4f169 796
04c9666a
AM		 797 /* Like R_PPC64_REL24 without touching the two least significant bits. */
798 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 799 2, /* rightshift */
800 2, /* size (0 = byte, 1 = short, 2 = long) */
801 30, /* bitsize */
b34976b6 802 TRUE, /* pc_relative */
5bd4f169
AM		 803 0, /* bitpos */
804 complain_overflow_dont, /* complain_on_overflow */
805 bfd_elf_generic_reloc, /* special_function */
04c9666a 806 "R_PPC64_REL30", /* name */
b34976b6 807 FALSE, /* partial_inplace */
d006db6c 808 0, /* src_mask */
5bd4f169 809 0xfffffffc, /* dst_mask */
b34976b6 810 TRUE), /* pcrel_offset */
5bd4f169
AM		 811
812 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
813
814 /* A standard 64-bit relocation. */
815 HOWTO (R_PPC64_ADDR64, /* type */
816 0, /* rightshift */
817 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
818 64, /* bitsize */
b34976b6 819 FALSE, /* pc_relative */
5bd4f169
AM		 820 0, /* bitpos */
821 complain_overflow_dont, /* complain_on_overflow */
822 bfd_elf_generic_reloc, /* special_function */
823 "R_PPC64_ADDR64", /* name */
b34976b6 824 FALSE, /* partial_inplace */
5bd4f169 825 0, /* src_mask */
f5e87a1d 826 ONES (64), /* dst_mask */
b34976b6 827 FALSE), /* pcrel_offset */
5bd4f169
AM		 828
829 /* The bits 32-47 of an address. */
830 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
831 32, /* rightshift */
832 1, /* size (0 = byte, 1 = short, 2 = long) */
833 16, /* bitsize */
b34976b6 834 FALSE, /* pc_relative */
5bd4f169
AM		 835 0, /* bitpos */
836 complain_overflow_dont, /* complain_on_overflow */
837 bfd_elf_generic_reloc, /* special_function */
838 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 839 FALSE, /* partial_inplace */
5bd4f169
AM		 840 0, /* src_mask */
841 0xffff, /* dst_mask */
b34976b6 842 FALSE), /* pcrel_offset */
5bd4f169
AM		 843
844 /* The bits 32-47 of an address, plus 1 if the contents of the low
845 16 bits, treated as a signed number, is negative. */
846 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
847 32, /* rightshift */
848 1, /* size (0 = byte, 1 = short, 2 = long) */
849 16, /* bitsize */
b34976b6 850 FALSE, /* pc_relative */
5bd4f169
AM		 851 0, /* bitpos */
852 complain_overflow_dont, /* complain_on_overflow */
805fc799 853 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 854 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 855 FALSE, /* partial_inplace */
5bd4f169
AM		 856 0, /* src_mask */
857 0xffff, /* dst_mask */
b34976b6 858 FALSE), /* pcrel_offset */
5bd4f169
AM		 859
860 /* The bits 48-63 of an address. */
861 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
862 48, /* rightshift */
863 1, /* size (0 = byte, 1 = short, 2 = long) */
864 16, /* bitsize */
b34976b6 865 FALSE, /* pc_relative */
5bd4f169
AM		 866 0, /* bitpos */
867 complain_overflow_dont, /* complain_on_overflow */
868 bfd_elf_generic_reloc, /* special_function */
869 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 870 FALSE, /* partial_inplace */
5bd4f169
AM		 871 0, /* src_mask */
872 0xffff, /* dst_mask */
b34976b6 873 FALSE), /* pcrel_offset */
5bd4f169
AM		 874
875 /* The bits 48-63 of an address, plus 1 if the contents of the low
876 16 bits, treated as a signed number, is negative. */
877 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
878 48, /* rightshift */
879 1, /* size (0 = byte, 1 = short, 2 = long) */
880 16, /* bitsize */
b34976b6 881 FALSE, /* pc_relative */
5bd4f169
AM		 882 0, /* bitpos */
883 complain_overflow_dont, /* complain_on_overflow */
805fc799 884 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 885 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 886 FALSE, /* partial_inplace */
5bd4f169
AM		 887 0, /* src_mask */
888 0xffff, /* dst_mask */
b34976b6 889 FALSE), /* pcrel_offset */
5bd4f169
AM		 890
891 /* Like ADDR64, but may be unaligned. */
892 HOWTO (R_PPC64_UADDR64, /* type */
893 0, /* rightshift */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
895 64, /* bitsize */
b34976b6 896 FALSE, /* pc_relative */
5bd4f169
AM		 897 0, /* bitpos */
898 complain_overflow_dont, /* complain_on_overflow */
899 bfd_elf_generic_reloc, /* special_function */
900 "R_PPC64_UADDR64", /* name */
b34976b6 901 FALSE, /* partial_inplace */
5bd4f169 902 0, /* src_mask */
f5e87a1d 903 ONES (64), /* dst_mask */
b34976b6 904 FALSE), /* pcrel_offset */
5bd4f169
AM		 905
906 /* 64-bit relative relocation. */
907 HOWTO (R_PPC64_REL64, /* type */
908 0, /* rightshift */
909 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
910 64, /* bitsize */
b34976b6 911 TRUE, /* pc_relative */
5bd4f169
AM		 912 0, /* bitpos */
913 complain_overflow_dont, /* complain_on_overflow */
914 bfd_elf_generic_reloc, /* special_function */
915 "R_PPC64_REL64", /* name */
b34976b6 916 FALSE, /* partial_inplace */
5bd4f169 917 0, /* src_mask */
f5e87a1d 918 ONES (64), /* dst_mask */
b34976b6 919 TRUE), /* pcrel_offset */
5bd4f169 920
cedb70c5 921 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 922 HOWTO (R_PPC64_PLT64, /* type */
923 0, /* rightshift */
924 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
925 64, /* bitsize */
b34976b6 926 FALSE, /* pc_relative */
5bd4f169
AM		 927 0, /* bitpos */
928 complain_overflow_dont, /* complain_on_overflow */
805fc799 929 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 930 "R_PPC64_PLT64", /* name */
b34976b6 931 FALSE, /* partial_inplace */
5bd4f169 932 0, /* src_mask */
f5e87a1d 933 ONES (64), /* dst_mask */
b34976b6 934 FALSE), /* pcrel_offset */
5bd4f169
AM		 935
936 /* 64-bit PC relative relocation to the symbol's procedure linkage
937 table. */
938 /* FIXME: R_PPC64_PLTREL64 not supported. */
939 HOWTO (R_PPC64_PLTREL64, /* type */
940 0, /* rightshift */
941 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
942 64, /* bitsize */
b34976b6 943 TRUE, /* pc_relative */
5bd4f169
AM		 944 0, /* bitpos */
945 complain_overflow_dont, /* complain_on_overflow */
805fc799 946 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 947 "R_PPC64_PLTREL64", /* name */
b34976b6 948 FALSE, /* partial_inplace */
5bd4f169 949 0, /* src_mask */
f5e87a1d 950 ONES (64), /* dst_mask */
b34976b6 951 TRUE), /* pcrel_offset */
5bd4f169
AM		 952
953 /* 16 bit TOC-relative relocation. */
954
955 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
956 HOWTO (R_PPC64_TOC16, /* type */
957 0, /* rightshift */
958 1, /* size (0 = byte, 1 = short, 2 = long) */
959 16, /* bitsize */
b34976b6 960 FALSE, /* pc_relative */
5bd4f169
AM		 961 0, /* bitpos */
962 complain_overflow_signed, /* complain_on_overflow */
805fc799 963 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 964 "R_PPC64_TOC16", /* name */
b34976b6 965 FALSE, /* partial_inplace */
5bd4f169
AM		 966 0, /* src_mask */
967 0xffff, /* dst_mask */
b34976b6 968 FALSE), /* pcrel_offset */
5bd4f169
AM		 969
970 /* 16 bit TOC-relative relocation without overflow. */
971
972 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
973 HOWTO (R_PPC64_TOC16_LO, /* type */
974 0, /* rightshift */
975 1, /* size (0 = byte, 1 = short, 2 = long) */
976 16, /* bitsize */
b34976b6 977 FALSE, /* pc_relative */
5bd4f169
AM		 978 0, /* bitpos */
979 complain_overflow_dont, /* complain_on_overflow */
805fc799 980 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 981 "R_PPC64_TOC16_LO", /* name */
b34976b6 982 FALSE, /* partial_inplace */
5bd4f169
AM		 983 0, /* src_mask */
984 0xffff, /* dst_mask */
b34976b6 985 FALSE), /* pcrel_offset */
5bd4f169
AM		 986
987 /* 16 bit TOC-relative relocation, high 16 bits. */
988
989 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
990 HOWTO (R_PPC64_TOC16_HI, /* type */
991 16, /* rightshift */
992 1, /* size (0 = byte, 1 = short, 2 = long) */
993 16, /* bitsize */
b34976b6 994 FALSE, /* pc_relative */
5bd4f169 995 0, /* bitpos */
f9c6b907 996 complain_overflow_signed, /* complain_on_overflow */
805fc799 997 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 998 "R_PPC64_TOC16_HI", /* name */
b34976b6 999 FALSE, /* partial_inplace */
5bd4f169
AM		 1000 0, /* src_mask */
1001 0xffff, /* dst_mask */
b34976b6 1002 FALSE), /* pcrel_offset */
5bd4f169
AM		 1003
1004 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1005 contents of the low 16 bits, treated as a signed number, is
1006 negative. */
1007
1008 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1009 HOWTO (R_PPC64_TOC16_HA, /* type */
1010 16, /* rightshift */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 16, /* bitsize */
b34976b6 1013 FALSE, /* pc_relative */
5bd4f169 1014 0, /* bitpos */
f9c6b907 1015 complain_overflow_signed, /* complain_on_overflow */
805fc799 1016 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 1017 "R_PPC64_TOC16_HA", /* name */
b34976b6 1018 FALSE, /* partial_inplace */
5bd4f169
AM		 1019 0, /* src_mask */
1020 0xffff, /* dst_mask */
b34976b6 1021 FALSE), /* pcrel_offset */
5bd4f169
AM		 1022
1023 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1024
1025 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1026 HOWTO (R_PPC64_TOC, /* type */
1027 0, /* rightshift */
1028 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1029 64, /* bitsize */
b34976b6 1030 FALSE, /* pc_relative */
5bd4f169 1031 0, /* bitpos */
b80eed39 1032 complain_overflow_dont, /* complain_on_overflow */
805fc799 1033 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 1034 "R_PPC64_TOC", /* name */
b34976b6 1035 FALSE, /* partial_inplace */
5bd4f169 1036 0, /* src_mask */
f5e87a1d 1037 ONES (64), /* dst_mask */
b34976b6 1038 FALSE), /* pcrel_offset */
5bd4f169
AM		 1039
1040 /* Like R_PPC64_GOT16, but also informs the link editor that the
1041 value to relocate may (!) refer to a PLT entry which the link
1042 editor (a) may replace with the symbol value. If the link editor
1043 is unable to fully resolve the symbol, it may (b) create a PLT
1044 entry and store the address to the new PLT entry in the GOT.
1045 This permits lazy resolution of function symbols at run time.
1046 The link editor may also skip all of this and just (c) emit a
1047 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1048 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1049 HOWTO (R_PPC64_PLTGOT16, /* type */
1050 0, /* rightshift */
1051 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 16, /* bitsize */
b34976b6 1053 FALSE, /* pc_relative */
5bd4f169
AM		 1054 0, /* bitpos */
1055 complain_overflow_signed, /* complain_on_overflow */
805fc799 1056 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1057 "R_PPC64_PLTGOT16", /* name */
1058 FALSE, /* partial_inplace */
1059 0, /* src_mask */
1060 0xffff, /* dst_mask */
1061 FALSE), /* pcrel_offset */
1062
1063 /* Like R_PPC64_PLTGOT16, but without overflow. */
1064 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1065 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1066 0, /* rightshift */
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 16, /* bitsize */
1069 FALSE, /* pc_relative */
1070 0, /* bitpos */
1071 complain_overflow_dont, /* complain_on_overflow */
1072 ppc64_elf_unhandled_reloc, /* special_function */
1073 "R_PPC64_PLTGOT16_LO", /* name */
1074 FALSE, /* partial_inplace */
1075 0, /* src_mask */
1076 0xffff, /* dst_mask */
1077 FALSE), /* pcrel_offset */
1078
1079 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1080 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1081 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1082 16, /* rightshift */
1083 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 16, /* bitsize */
1085 FALSE, /* pc_relative */
1086 0, /* bitpos */
f9c6b907 1087 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1088 ppc64_elf_unhandled_reloc, /* special_function */
1089 "R_PPC64_PLTGOT16_HI", /* name */
1090 FALSE, /* partial_inplace */
1091 0, /* src_mask */
1092 0xffff, /* dst_mask */
1093 FALSE), /* pcrel_offset */
1094
1095 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1096 1 if the contents of the low 16 bits, treated as a signed number,
1097 is negative. */
1098 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1099 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1100 16, /* rightshift */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1102 16, /* bitsize */
1103 FALSE, /* pc_relative */
1104 0, /* bitpos */
f9c6b907 1105 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1106 ppc64_elf_unhandled_reloc, /* special_function */
1107 "R_PPC64_PLTGOT16_HA", /* name */
1108 FALSE, /* partial_inplace */
1109 0, /* src_mask */
1110 0xffff, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1112
1113 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_ADDR16_DS, /* type */
1115 0, /* rightshift */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1117 16, /* bitsize */
1118 FALSE, /* pc_relative */
1119 0, /* bitpos */
b80eed39 1120 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1121 bfd_elf_generic_reloc, /* special_function */
1122 "R_PPC64_ADDR16_DS", /* name */
1123 FALSE, /* partial_inplace */
1124 0, /* src_mask */
1125 0xfffc, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1127
1128 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1130 0, /* rightshift */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1132 16, /* bitsize */
1133 FALSE, /* pc_relative */
1134 0, /* bitpos */
1135 complain_overflow_dont,/* complain_on_overflow */
1136 bfd_elf_generic_reloc, /* special_function */
1137 "R_PPC64_ADDR16_LO_DS",/* name */
1138 FALSE, /* partial_inplace */
1139 0, /* src_mask */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1142
1143 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_GOT16_DS, /* type */
1145 0, /* rightshift */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1147 16, /* bitsize */
1148 FALSE, /* pc_relative */
1149 0, /* bitpos */
1150 complain_overflow_signed, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc, /* special_function */
1152 "R_PPC64_GOT16_DS", /* name */
1153 FALSE, /* partial_inplace */
1154 0, /* src_mask */
1155 0xfffc, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1157
1158 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1160 0, /* rightshift */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1162 16, /* bitsize */
1163 FALSE, /* pc_relative */
1164 0, /* bitpos */
1165 complain_overflow_dont, /* complain_on_overflow */
1166 ppc64_elf_unhandled_reloc, /* special_function */
1167 "R_PPC64_GOT16_LO_DS", /* name */
1168 FALSE, /* partial_inplace */
1169 0, /* src_mask */
1170 0xfffc, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1172
1173 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1175 0, /* rightshift */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1177 16, /* bitsize */
1178 FALSE, /* pc_relative */
1179 0, /* bitpos */
1180 complain_overflow_dont, /* complain_on_overflow */
1181 ppc64_elf_unhandled_reloc, /* special_function */
1182 "R_PPC64_PLT16_LO_DS", /* name */
1183 FALSE, /* partial_inplace */
1184 0, /* src_mask */
1185 0xfffc, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1187
1188 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1190 0, /* rightshift */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1192 16, /* bitsize */
1193 FALSE, /* pc_relative */
1194 0, /* bitpos */
b80eed39 1195 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1196 ppc64_elf_sectoff_reloc, /* special_function */
1197 "R_PPC64_SECTOFF_DS", /* name */
1198 FALSE, /* partial_inplace */
1199 0, /* src_mask */
1200 0xfffc, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1202
1203 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1205 0, /* rightshift */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1207 16, /* bitsize */
1208 FALSE, /* pc_relative */
1209 0, /* bitpos */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc64_elf_sectoff_reloc, /* special_function */
1212 "R_PPC64_SECTOFF_LO_DS",/* name */
1213 FALSE, /* partial_inplace */
1214 0, /* src_mask */
1215 0xfffc, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1217
1218 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1219 HOWTO (R_PPC64_TOC16_DS, /* type */
1220 0, /* rightshift */
1221 1, /* size (0 = byte, 1 = short, 2 = long) */
1222 16, /* bitsize */
1223 FALSE, /* pc_relative */
1224 0, /* bitpos */
1225 complain_overflow_signed, /* complain_on_overflow */
1226 ppc64_elf_toc_reloc, /* special_function */
1227 "R_PPC64_TOC16_DS", /* name */
1228 FALSE, /* partial_inplace */
1229 0, /* src_mask */
1230 0xfffc, /* dst_mask */
1231 FALSE), /* pcrel_offset */
1232
1233 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1234 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1235 0, /* rightshift */
1236 1, /* size (0 = byte, 1 = short, 2 = long) */
1237 16, /* bitsize */
1238 FALSE, /* pc_relative */
1239 0, /* bitpos */
1240 complain_overflow_dont, /* complain_on_overflow */
1241 ppc64_elf_toc_reloc, /* special_function */
1242 "R_PPC64_TOC16_LO_DS", /* name */
1243 FALSE, /* partial_inplace */
1244 0, /* src_mask */
1245 0xfffc, /* dst_mask */
1246 FALSE), /* pcrel_offset */
1247
1248 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1249 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1250 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM		 1251 0, /* rightshift */
1252 1, /* size (0 = byte, 1 = short, 2 = long) */
1253 16, /* bitsize */
1254 FALSE, /* pc_relative */
1255 0, /* bitpos */
1256 complain_overflow_signed, /* complain_on_overflow */
1257 ppc64_elf_unhandled_reloc, /* special_function */
1258 "R_PPC64_PLTGOT16_DS", /* name */
1259 FALSE, /* partial_inplace */
1260 0, /* src_mask */
1261 0xfffc, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1263
1264 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1265 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1266 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1267 0, /* rightshift */
1268 1, /* size (0 = byte, 1 = short, 2 = long) */
1269 16, /* bitsize */
1270 FALSE, /* pc_relative */
1271 0, /* bitpos */
1272 complain_overflow_dont, /* complain_on_overflow */
1273 ppc64_elf_unhandled_reloc, /* special_function */
1274 "R_PPC64_PLTGOT16_LO_DS",/* name */
1275 FALSE, /* partial_inplace */
1276 0, /* src_mask */
1277 0xfffc, /* dst_mask */
1278 FALSE), /* pcrel_offset */
1279
727fc41e 1280 /* Marker relocs for TLS. */
411e1bfb
AM		 1281 HOWTO (R_PPC64_TLS,
1282 0, /* rightshift */
1283 2, /* size (0 = byte, 1 = short, 2 = long) */
1284 32, /* bitsize */
1285 FALSE, /* pc_relative */
1286 0, /* bitpos */
1287 complain_overflow_dont, /* complain_on_overflow */
1288 bfd_elf_generic_reloc, /* special_function */
1289 "R_PPC64_TLS", /* name */
1290 FALSE, /* partial_inplace */
1291 0, /* src_mask */
1292 0, /* dst_mask */
1293 FALSE), /* pcrel_offset */
1294
727fc41e
AM		 1295 HOWTO (R_PPC64_TLSGD,
1296 0, /* rightshift */
1297 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 32, /* bitsize */
1299 FALSE, /* pc_relative */
1300 0, /* bitpos */
1301 complain_overflow_dont, /* complain_on_overflow */
1302 bfd_elf_generic_reloc, /* special_function */
1303 "R_PPC64_TLSGD", /* name */
1304 FALSE, /* partial_inplace */
1305 0, /* src_mask */
1306 0, /* dst_mask */
1307 FALSE), /* pcrel_offset */
1308
1309 HOWTO (R_PPC64_TLSLD,
1310 0, /* rightshift */
1311 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 32, /* bitsize */
1313 FALSE, /* pc_relative */
1314 0, /* bitpos */
1315 complain_overflow_dont, /* complain_on_overflow */
1316 bfd_elf_generic_reloc, /* special_function */
1317 "R_PPC64_TLSLD", /* name */
1318 FALSE, /* partial_inplace */
1319 0, /* src_mask */
1320 0, /* dst_mask */
1321 FALSE), /* pcrel_offset */
1322
3b421ab3
AM		 1323 HOWTO (R_PPC64_TOCSAVE,
1324 0, /* rightshift */
1325 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 32, /* bitsize */
1327 FALSE, /* pc_relative */
1328 0, /* bitpos */
1329 complain_overflow_dont, /* complain_on_overflow */
1330 bfd_elf_generic_reloc, /* special_function */
1331 "R_PPC64_TOCSAVE", /* name */
1332 FALSE, /* partial_inplace */
1333 0, /* src_mask */
1334 0, /* dst_mask */
1335 FALSE), /* pcrel_offset */
1336
411e1bfb
AM		 1337 /* Computes the load module index of the load module that contains the
1338 definition of its TLS sym. */
1339 HOWTO (R_PPC64_DTPMOD64,
1340 0, /* rightshift */
1341 4, /* size (0 = byte, 1 = short, 2 = long) */
1342 64, /* bitsize */
1343 FALSE, /* pc_relative */
1344 0, /* bitpos */
1345 complain_overflow_dont, /* complain_on_overflow */
1346 ppc64_elf_unhandled_reloc, /* special_function */
1347 "R_PPC64_DTPMOD64", /* name */
1348 FALSE, /* partial_inplace */
1349 0, /* src_mask */
1350 ONES (64), /* dst_mask */
1351 FALSE), /* pcrel_offset */
1352
1353 /* Computes a dtv-relative displacement, the difference between the value
1354 of sym+add and the base address of the thread-local storage block that
1355 contains the definition of sym, minus 0x8000. */
1356 HOWTO (R_PPC64_DTPREL64,
1357 0, /* rightshift */
1358 4, /* size (0 = byte, 1 = short, 2 = long) */
1359 64, /* bitsize */
1360 FALSE, /* pc_relative */
1361 0, /* bitpos */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL64", /* name */
1365 FALSE, /* partial_inplace */
1366 0, /* src_mask */
1367 ONES (64), /* dst_mask */
1368 FALSE), /* pcrel_offset */
1369
1370 /* A 16 bit dtprel reloc. */
1371 HOWTO (R_PPC64_DTPREL16,
1372 0, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1374 16, /* bitsize */
1375 FALSE, /* pc_relative */
1376 0, /* bitpos */
1377 complain_overflow_signed, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16", /* name */
1380 FALSE, /* partial_inplace */
1381 0, /* src_mask */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1384
1385 /* Like DTPREL16, but no overflow. */
1386 HOWTO (R_PPC64_DTPREL16_LO,
1387 0, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1389 16, /* bitsize */
1390 FALSE, /* pc_relative */
1391 0, /* bitpos */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_LO", /* name */
1395 FALSE, /* partial_inplace */
1396 0, /* src_mask */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1399
1400 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HI,
1402 16, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1404 16, /* bitsize */
1405 FALSE, /* pc_relative */
1406 0, /* bitpos */
f9c6b907 1407 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_HI", /* name */
1410 FALSE, /* partial_inplace */
1411 0, /* src_mask */
1412 0xffff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1414
1415 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HA,
1417 16, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1419 16, /* bitsize */
1420 FALSE, /* pc_relative */
1421 0, /* bitpos */
f9c6b907 1422 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_HA", /* name */
1425 FALSE, /* partial_inplace */
1426 0, /* src_mask */
1427 0xffff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1429
1430 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHER,
1432 32, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1434 16, /* bitsize */
1435 FALSE, /* pc_relative */
1436 0, /* bitpos */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHER", /* name */
1440 FALSE, /* partial_inplace */
1441 0, /* src_mask */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1444
1445 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1447 32, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1449 16, /* bitsize */
1450 FALSE, /* pc_relative */
1451 0, /* bitpos */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHERA", /* name */
1455 FALSE, /* partial_inplace */
1456 0, /* src_mask */
1457 0xffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1459
1460 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1461 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1462 48, /* rightshift */
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1464 16, /* bitsize */
1465 FALSE, /* pc_relative */
1466 0, /* bitpos */
1467 complain_overflow_dont, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc, /* special_function */
1469 "R_PPC64_DTPREL16_HIGHEST", /* name */
1470 FALSE, /* partial_inplace */
1471 0, /* src_mask */
1472 0xffff, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1474
1475 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1476 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1477 48, /* rightshift */
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1479 16, /* bitsize */
1480 FALSE, /* pc_relative */
1481 0, /* bitpos */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc, /* special_function */
1484 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1485 FALSE, /* partial_inplace */
1486 0, /* src_mask */
1487 0xffff, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1489
1490 /* Like DTPREL16, but for insns with a DS field. */
1491 HOWTO (R_PPC64_DTPREL16_DS,
1492 0, /* rightshift */
1493 1, /* size (0 = byte, 1 = short, 2 = long) */
1494 16, /* bitsize */
1495 FALSE, /* pc_relative */
1496 0, /* bitpos */
1497 complain_overflow_signed, /* complain_on_overflow */
1498 ppc64_elf_unhandled_reloc, /* special_function */
1499 "R_PPC64_DTPREL16_DS", /* name */
1500 FALSE, /* partial_inplace */
1501 0, /* src_mask */
1502 0xfffc, /* dst_mask */
1503 FALSE), /* pcrel_offset */
1504
1505 /* Like DTPREL16_DS, but no overflow. */
1506 HOWTO (R_PPC64_DTPREL16_LO_DS,
1507 0, /* rightshift */
1508 1, /* size (0 = byte, 1 = short, 2 = long) */
1509 16, /* bitsize */
1510 FALSE, /* pc_relative */
1511 0, /* bitpos */
1512 complain_overflow_dont, /* complain_on_overflow */
1513 ppc64_elf_unhandled_reloc, /* special_function */
1514 "R_PPC64_DTPREL16_LO_DS", /* name */
1515 FALSE, /* partial_inplace */
1516 0, /* src_mask */
1517 0xfffc, /* dst_mask */
1518 FALSE), /* pcrel_offset */
1519
1520 /* Computes a tp-relative displacement, the difference between the value of
1521 sym+add and the value of the thread pointer (r13). */
1522 HOWTO (R_PPC64_TPREL64,
1523 0, /* rightshift */
1524 4, /* size (0 = byte, 1 = short, 2 = long) */
1525 64, /* bitsize */
1526 FALSE, /* pc_relative */
1527 0, /* bitpos */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL64", /* name */
1531 FALSE, /* partial_inplace */
1532 0, /* src_mask */
1533 ONES (64), /* dst_mask */
1534 FALSE), /* pcrel_offset */
1535
1536 /* A 16 bit tprel reloc. */
1537 HOWTO (R_PPC64_TPREL16,
1538 0, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1540 16, /* bitsize */
1541 FALSE, /* pc_relative */
1542 0, /* bitpos */
1543 complain_overflow_signed, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16", /* name */
1546 FALSE, /* partial_inplace */
1547 0, /* src_mask */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1550
1551 /* Like TPREL16, but no overflow. */
1552 HOWTO (R_PPC64_TPREL16_LO,
1553 0, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1555 16, /* bitsize */
1556 FALSE, /* pc_relative */
1557 0, /* bitpos */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_LO", /* name */
1561 FALSE, /* partial_inplace */
1562 0, /* src_mask */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1565
1566 /* Like TPREL16_LO, but next higher group of 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HI,
1568 16, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1570 16, /* bitsize */
1571 FALSE, /* pc_relative */
1572 0, /* bitpos */
f9c6b907 1573 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_HI", /* name */
1576 FALSE, /* partial_inplace */
1577 0, /* src_mask */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1580
1581 /* Like TPREL16_HI, but adjust for low 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HA,
1583 16, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1585 16, /* bitsize */
1586 FALSE, /* pc_relative */
1587 0, /* bitpos */
f9c6b907 1588 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_HA", /* name */
1591 FALSE, /* partial_inplace */
1592 0, /* src_mask */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1595
1596 /* Like TPREL16_HI, but next higher group of 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHER,
1598 32, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1600 16, /* bitsize */
1601 FALSE, /* pc_relative */
1602 0, /* bitpos */
1603 complain_overflow_dont, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc, /* special_function */
1605 "R_PPC64_TPREL16_HIGHER", /* name */
1606 FALSE, /* partial_inplace */
1607 0, /* src_mask */
1608 0xffff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1610
1611 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHERA,
1613 32, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1615 16, /* bitsize */
1616 FALSE, /* pc_relative */
1617 0, /* bitpos */
1618 complain_overflow_dont, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc, /* special_function */
1620 "R_PPC64_TPREL16_HIGHERA", /* name */
1621 FALSE, /* partial_inplace */
1622 0, /* src_mask */
1623 0xffff, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1625
1626 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1627 HOWTO (R_PPC64_TPREL16_HIGHEST,
1628 48, /* rightshift */
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1630 16, /* bitsize */
1631 FALSE, /* pc_relative */
1632 0, /* bitpos */
1633 complain_overflow_dont, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc, /* special_function */
1635 "R_PPC64_TPREL16_HIGHEST", /* name */
1636 FALSE, /* partial_inplace */
1637 0, /* src_mask */
1638 0xffff, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1640
1641 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1642 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1643 48, /* rightshift */
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1645 16, /* bitsize */
1646 FALSE, /* pc_relative */
1647 0, /* bitpos */
1648 complain_overflow_dont, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_TPREL16_HIGHESTA", /* name */
1651 FALSE, /* partial_inplace */
1652 0, /* src_mask */
1653 0xffff, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1655
1656 /* Like TPREL16, but for insns with a DS field. */
1657 HOWTO (R_PPC64_TPREL16_DS,
1658 0, /* rightshift */
1659 1, /* size (0 = byte, 1 = short, 2 = long) */
1660 16, /* bitsize */
1661 FALSE, /* pc_relative */
1662 0, /* bitpos */
1663 complain_overflow_signed, /* complain_on_overflow */
1664 ppc64_elf_unhandled_reloc, /* special_function */
1665 "R_PPC64_TPREL16_DS", /* name */
1666 FALSE, /* partial_inplace */
1667 0, /* src_mask */
1668 0xfffc, /* dst_mask */
1669 FALSE), /* pcrel_offset */
1670
1671 /* Like TPREL16_DS, but no overflow. */
1672 HOWTO (R_PPC64_TPREL16_LO_DS,
1673 0, /* rightshift */
1674 1, /* size (0 = byte, 1 = short, 2 = long) */
1675 16, /* bitsize */
1676 FALSE, /* pc_relative */
1677 0, /* bitpos */
1678 complain_overflow_dont, /* complain_on_overflow */
1679 ppc64_elf_unhandled_reloc, /* special_function */
1680 "R_PPC64_TPREL16_LO_DS", /* name */
1681 FALSE, /* partial_inplace */
1682 0, /* src_mask */
1683 0xfffc, /* dst_mask */
1684 FALSE), /* pcrel_offset */
1685
1686 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1687 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1688 to the first entry relative to the TOC base (r2). */
1689 HOWTO (R_PPC64_GOT_TLSGD16,
1690 0, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
1693 FALSE, /* pc_relative */
1694 0, /* bitpos */
1695 complain_overflow_signed, /* complain_on_overflow */
1696 ppc64_elf_unhandled_reloc, /* special_function */
1697 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1698 FALSE, /* partial_inplace */
5bd4f169
AM		 1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
b34976b6 1701 FALSE), /* pcrel_offset */
5bd4f169 1702
411e1bfb
AM		 1703 /* Like GOT_TLSGD16, but no overflow. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1705 0, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
b34976b6 1708 FALSE, /* pc_relative */
5bd4f169
AM		 1709 0, /* bitpos */
1710 complain_overflow_dont, /* complain_on_overflow */
805fc799 1711 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1712 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1713 FALSE, /* partial_inplace */
5bd4f169
AM		 1714 0, /* src_mask */
1715 0xffff, /* dst_mask */
b34976b6 1716 FALSE), /* pcrel_offset */
5bd4f169 1717
411e1bfb
AM		 1718 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1719 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1720 16, /* rightshift */
1721 1, /* size (0 = byte, 1 = short, 2 = long) */
1722 16, /* bitsize */
b34976b6 1723 FALSE, /* pc_relative */
5bd4f169 1724 0, /* bitpos */
f9c6b907 1725 complain_overflow_signed, /* complain_on_overflow */
805fc799 1726 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1727 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1728 FALSE, /* partial_inplace */
5bd4f169
AM		 1729 0, /* src_mask */
1730 0xffff, /* dst_mask */
b34976b6 1731 FALSE), /* pcrel_offset */
5bd4f169 1732
411e1bfb
AM		 1733 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1734 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1735 16, /* rightshift */
1736 1, /* size (0 = byte, 1 = short, 2 = long) */
1737 16, /* bitsize */
b34976b6 1738 FALSE, /* pc_relative */
5bd4f169 1739 0, /* bitpos */
f9c6b907 1740 complain_overflow_signed, /* complain_on_overflow */
805fc799 1741 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1742 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1743 FALSE, /* partial_inplace */
5bd4f169
AM		 1744 0, /* src_mask */
1745 0xffff, /* dst_mask */
b34976b6 1746 FALSE), /* pcrel_offset */
5bd4f169 1747
411e1bfb
AM		 1748 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1749 with values (sym+add)@dtpmod and zero, and computes the offset to the
1750 first entry relative to the TOC base (r2). */
1751 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1752 0, /* rightshift */
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1754 16, /* bitsize */
b34976b6 1755 FALSE, /* pc_relative */
5bd4f169 1756 0, /* bitpos */
411e1bfb
AM		 1757 complain_overflow_signed, /* complain_on_overflow */
1758 ppc64_elf_unhandled_reloc, /* special_function */
1759 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1760 FALSE, /* partial_inplace */
d006db6c 1761 0, /* src_mask */
411e1bfb 1762 0xffff, /* dst_mask */
b34976b6 1763 FALSE), /* pcrel_offset */
5bd4f169 1764
411e1bfb
AM		 1765 /* Like GOT_TLSLD16, but no overflow. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1767 0, /* rightshift */
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1769 16, /* bitsize */
b34976b6 1770 FALSE, /* pc_relative */
5bd4f169 1771 0, /* bitpos */
411e1bfb
AM		 1772 complain_overflow_dont, /* complain_on_overflow */
1773 ppc64_elf_unhandled_reloc, /* special_function */
1774 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1775 FALSE, /* partial_inplace */
d006db6c 1776 0, /* src_mask */
411e1bfb 1777 0xffff, /* dst_mask */
b34976b6 1778 FALSE), /* pcrel_offset */
5bd4f169 1779
411e1bfb
AM		 1780 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1781 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1782 16, /* rightshift */
5bd4f169
AM		 1783 1, /* size (0 = byte, 1 = short, 2 = long) */
1784 16, /* bitsize */
b34976b6 1785 FALSE, /* pc_relative */
5bd4f169 1786 0, /* bitpos */
f9c6b907 1787 complain_overflow_signed, /* complain_on_overflow */
805fc799 1788 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1789 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1790 FALSE, /* partial_inplace */
d006db6c 1791 0, /* src_mask */
411e1bfb 1792 0xffff, /* dst_mask */
b34976b6 1793 FALSE), /* pcrel_offset */
5bd4f169 1794
411e1bfb
AM		 1795 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1796 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1797 16, /* rightshift */
5bd4f169
AM		 1798 1, /* size (0 = byte, 1 = short, 2 = long) */
1799 16, /* bitsize */
b34976b6 1800 FALSE, /* pc_relative */
5bd4f169 1801 0, /* bitpos */
f9c6b907 1802 complain_overflow_signed, /* complain_on_overflow */
805fc799 1803 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1804 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1805 FALSE, /* partial_inplace */
d006db6c 1806 0, /* src_mask */
411e1bfb 1807 0xffff, /* dst_mask */
b34976b6 1808 FALSE), /* pcrel_offset */
5bd4f169 1809
411e1bfb
AM		 1810 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1811 the offset to the entry relative to the TOC base (r2). */
1812 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1813 0, /* rightshift */
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1815 16, /* bitsize */
b34976b6 1816 FALSE, /* pc_relative */
5bd4f169 1817 0, /* bitpos */
411e1bfb 1818 complain_overflow_signed, /* complain_on_overflow */
805fc799 1819 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1820 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1821 FALSE, /* partial_inplace */
d006db6c 1822 0, /* src_mask */
5bd4f169 1823 0xfffc, /* dst_mask */
b34976b6 1824 FALSE), /* pcrel_offset */
5bd4f169 1825
411e1bfb
AM		 1826 /* Like GOT_DTPREL16_DS, but no overflow. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1828 0, /* rightshift */
c061c2d8
AM		 1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1830 16, /* bitsize */
b34976b6 1831 FALSE, /* pc_relative */
5bd4f169 1832 0, /* bitpos */
411e1bfb
AM		 1833 complain_overflow_dont, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1836 FALSE, /* partial_inplace */
d006db6c 1837 0, /* src_mask */
c061c2d8 1838 0xfffc, /* dst_mask */
b34976b6 1839 FALSE), /* pcrel_offset */
5bd4f169 1840
411e1bfb
AM		 1841 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1842 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1843 16, /* rightshift */
5bd4f169
AM		 1844 1, /* size (0 = byte, 1 = short, 2 = long) */
1845 16, /* bitsize */
b34976b6 1846 FALSE, /* pc_relative */
5bd4f169 1847 0, /* bitpos */
f9c6b907 1848 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1849 ppc64_elf_unhandled_reloc, /* special_function */
1850 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1851 FALSE, /* partial_inplace */
d006db6c 1852 0, /* src_mask */
411e1bfb 1853 0xffff, /* dst_mask */
b34976b6 1854 FALSE), /* pcrel_offset */
5bd4f169 1855
411e1bfb
AM		 1856 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1857 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1858 16, /* rightshift */
1859 1, /* size (0 = byte, 1 = short, 2 = long) */
1860 16, /* bitsize */
1861 FALSE, /* pc_relative */
1862 0, /* bitpos */
f9c6b907 1863 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1864 ppc64_elf_unhandled_reloc, /* special_function */
1865 "R_PPC64_GOT_DTPREL16_HA", /* name */
1866 FALSE, /* partial_inplace */
1867 0, /* src_mask */
1868 0xffff, /* dst_mask */
1869 FALSE), /* pcrel_offset */
1870
1871 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1872 offset to the entry relative to the TOC base (r2). */
1873 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1874 0, /* rightshift */
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1876 16, /* bitsize */
b34976b6 1877 FALSE, /* pc_relative */
5bd4f169
AM		 1878 0, /* bitpos */
1879 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1880 ppc64_elf_unhandled_reloc, /* special_function */
1881 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1882 FALSE, /* partial_inplace */
d006db6c 1883 0, /* src_mask */
ad8e1ba5 1884 0xfffc, /* dst_mask */
b34976b6 1885 FALSE), /* pcrel_offset */
5bd4f169 1886
411e1bfb
AM		 1887 /* Like GOT_TPREL16_DS, but no overflow. */
1888 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1889 0, /* rightshift */
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1891 16, /* bitsize */
b34976b6 1892 FALSE, /* pc_relative */
5bd4f169
AM		 1893 0, /* bitpos */
1894 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1895 ppc64_elf_unhandled_reloc, /* special_function */
1896 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1897 FALSE, /* partial_inplace */
d006db6c 1898 0, /* src_mask */
ad8e1ba5 1899 0xfffc, /* dst_mask */
b34976b6 1900 FALSE), /* pcrel_offset */
5bd4f169 1901
411e1bfb
AM		 1902 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1903 HOWTO (R_PPC64_GOT_TPREL16_HI,
1904 16, /* rightshift */
5bd4f169
AM		 1905 1, /* size (0 = byte, 1 = short, 2 = long) */
1906 16, /* bitsize */
b34976b6 1907 FALSE, /* pc_relative */
5bd4f169 1908 0, /* bitpos */
f9c6b907 1909 complain_overflow_signed, /* complain_on_overflow */
805fc799 1910 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1911 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1912 FALSE, /* partial_inplace */
d006db6c 1913 0, /* src_mask */
411e1bfb 1914 0xffff, /* dst_mask */
b34976b6 1915 FALSE), /* pcrel_offset */
5bd4f169 1916
411e1bfb
AM		 1917 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1918 HOWTO (R_PPC64_GOT_TPREL16_HA,
1919 16, /* rightshift */
5bd4f169
AM		 1920 1, /* size (0 = byte, 1 = short, 2 = long) */
1921 16, /* bitsize */
b34976b6 1922 FALSE, /* pc_relative */
5bd4f169 1923 0, /* bitpos */
f9c6b907 1924 complain_overflow_signed, /* complain_on_overflow */
805fc799 1925 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1926 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1927 FALSE, /* partial_inplace */
d006db6c 1928 0, /* src_mask */
411e1bfb 1929 0xffff, /* dst_mask */
b34976b6 1930 FALSE), /* pcrel_offset */
5bd4f169 1931
25f23106
AM		 1932 HOWTO (R_PPC64_JMP_IREL, /* type */
1933 0, /* rightshift */
1934 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1935 0, /* bitsize */
1936 FALSE, /* pc_relative */
1937 0, /* bitpos */
1938 complain_overflow_dont, /* complain_on_overflow */
1939 ppc64_elf_unhandled_reloc, /* special_function */
1940 "R_PPC64_JMP_IREL", /* name */
1941 FALSE, /* partial_inplace */
1942 0, /* src_mask */
1943 0, /* dst_mask */
1944 FALSE), /* pcrel_offset */
1945
e054468f
AM		 1946 HOWTO (R_PPC64_IRELATIVE, /* type */
1947 0, /* rightshift */
1948 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1949 64, /* bitsize */
1950 FALSE, /* pc_relative */
1951 0, /* bitpos */
1952 complain_overflow_dont, /* complain_on_overflow */
1953 bfd_elf_generic_reloc, /* special_function */
1954 "R_PPC64_IRELATIVE", /* name */
1955 FALSE, /* partial_inplace */
1956 0, /* src_mask */
1957 ONES (64), /* dst_mask */
1958 FALSE), /* pcrel_offset */
1959
25f23106
AM		 1960 /* A 16 bit relative relocation. */
1961 HOWTO (R_PPC64_REL16, /* type */
1962 0, /* rightshift */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1964 16, /* bitsize */
1965 TRUE, /* pc_relative */
1966 0, /* bitpos */
b80eed39 1967 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 1968 bfd_elf_generic_reloc, /* special_function */
1969 "R_PPC64_REL16", /* name */
1970 FALSE, /* partial_inplace */
1971 0, /* src_mask */
1972 0xffff, /* dst_mask */
1973 TRUE), /* pcrel_offset */
1974
1975 /* A 16 bit relative relocation without overflow. */
1976 HOWTO (R_PPC64_REL16_LO, /* type */
1977 0, /* rightshift */
1978 1, /* size (0 = byte, 1 = short, 2 = long) */
1979 16, /* bitsize */
1980 TRUE, /* pc_relative */
1981 0, /* bitpos */
1982 complain_overflow_dont,/* complain_on_overflow */
1983 bfd_elf_generic_reloc, /* special_function */
1984 "R_PPC64_REL16_LO", /* name */
1985 FALSE, /* partial_inplace */
1986 0, /* src_mask */
1987 0xffff, /* dst_mask */
1988 TRUE), /* pcrel_offset */
1989
1990 /* The high order 16 bits of a relative address. */
1991 HOWTO (R_PPC64_REL16_HI, /* type */
1992 16, /* rightshift */
1993 1, /* size (0 = byte, 1 = short, 2 = long) */
1994 16, /* bitsize */
1995 TRUE, /* pc_relative */
1996 0, /* bitpos */
f9c6b907 1997 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 1998 bfd_elf_generic_reloc, /* special_function */
1999 "R_PPC64_REL16_HI", /* name */
2000 FALSE, /* partial_inplace */
2001 0, /* src_mask */
2002 0xffff, /* dst_mask */
2003 TRUE), /* pcrel_offset */
2004
2005 /* The high order 16 bits of a relative address, plus 1 if the contents of
2006 the low 16 bits, treated as a signed number, is negative. */
2007 HOWTO (R_PPC64_REL16_HA, /* type */
2008 16, /* rightshift */
2009 1, /* size (0 = byte, 1 = short, 2 = long) */
2010 16, /* bitsize */
2011 TRUE, /* pc_relative */
2012 0, /* bitpos */
f9c6b907 2013 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 2014 ppc64_elf_ha_reloc, /* special_function */
2015 "R_PPC64_REL16_HA", /* name */
2016 FALSE, /* partial_inplace */
2017 0, /* src_mask */
2018 0xffff, /* dst_mask */
2019 TRUE), /* pcrel_offset */
2020
f9c6b907
AM		 2021 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2022 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2023 16, /* rightshift */
2024 1, /* size (0 = byte, 1 = short, 2 = long) */
2025 16, /* bitsize */
2026 FALSE, /* pc_relative */
2027 0, /* bitpos */
2028 complain_overflow_dont, /* complain_on_overflow */
2029 bfd_elf_generic_reloc, /* special_function */
2030 "R_PPC64_ADDR16_HIGH", /* name */
2031 FALSE, /* partial_inplace */
2032 0, /* src_mask */
2033 0xffff, /* dst_mask */
2034 FALSE), /* pcrel_offset */
2035
2036 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2037 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2038 16, /* rightshift */
2039 1, /* size (0 = byte, 1 = short, 2 = long) */
2040 16, /* bitsize */
2041 FALSE, /* pc_relative */
2042 0, /* bitpos */
2043 complain_overflow_dont, /* complain_on_overflow */
2044 ppc64_elf_ha_reloc, /* special_function */
2045 "R_PPC64_ADDR16_HIGHA", /* name */
2046 FALSE, /* partial_inplace */
2047 0, /* src_mask */
2048 0xffff, /* dst_mask */
2049 FALSE), /* pcrel_offset */
2050
2051 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2052 HOWTO (R_PPC64_DTPREL16_HIGH,
2053 16, /* rightshift */
2054 1, /* size (0 = byte, 1 = short, 2 = long) */
2055 16, /* bitsize */
2056 FALSE, /* pc_relative */
2057 0, /* bitpos */
2058 complain_overflow_dont, /* complain_on_overflow */
2059 ppc64_elf_unhandled_reloc, /* special_function */
2060 "R_PPC64_DTPREL16_HIGH", /* name */
2061 FALSE, /* partial_inplace */
2062 0, /* src_mask */
2063 0xffff, /* dst_mask */
2064 FALSE), /* pcrel_offset */
2065
2066 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2067 HOWTO (R_PPC64_DTPREL16_HIGHA,
2068 16, /* rightshift */
2069 1, /* size (0 = byte, 1 = short, 2 = long) */
2070 16, /* bitsize */
2071 FALSE, /* pc_relative */
2072 0, /* bitpos */
2073 complain_overflow_dont, /* complain_on_overflow */
2074 ppc64_elf_unhandled_reloc, /* special_function */
2075 "R_PPC64_DTPREL16_HIGHA", /* name */
2076 FALSE, /* partial_inplace */
2077 0, /* src_mask */
2078 0xffff, /* dst_mask */
2079 FALSE), /* pcrel_offset */
2080
2081 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2082 HOWTO (R_PPC64_TPREL16_HIGH,
2083 16, /* rightshift */
2084 1, /* size (0 = byte, 1 = short, 2 = long) */
2085 16, /* bitsize */
2086 FALSE, /* pc_relative */
2087 0, /* bitpos */
2088 complain_overflow_dont, /* complain_on_overflow */
2089 ppc64_elf_unhandled_reloc, /* special_function */
2090 "R_PPC64_TPREL16_HIGH", /* name */
2091 FALSE, /* partial_inplace */
2092 0, /* src_mask */
2093 0xffff, /* dst_mask */
2094 FALSE), /* pcrel_offset */
2095
2096 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2097 HOWTO (R_PPC64_TPREL16_HIGHA,
2098 16, /* rightshift */
2099 1, /* size (0 = byte, 1 = short, 2 = long) */
2100 16, /* bitsize */
2101 FALSE, /* pc_relative */
2102 0, /* bitpos */
2103 complain_overflow_dont, /* complain_on_overflow */
2104 ppc64_elf_unhandled_reloc, /* special_function */
2105 "R_PPC64_TPREL16_HIGHA", /* name */
2106 FALSE, /* partial_inplace */
2107 0, /* src_mask */
2108 0xffff, /* dst_mask */
2109 FALSE), /* pcrel_offset */
2110
45965137
AM		 2111 /* Like ADDR64, but use local entry point of function. */
2112 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2113 0, /* rightshift */
2114 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2115 64, /* bitsize */
2116 FALSE, /* pc_relative */
2117 0, /* bitpos */
2118 complain_overflow_dont, /* complain_on_overflow */
2119 bfd_elf_generic_reloc, /* special_function */
2120 "R_PPC64_ADDR64_LOCAL", /* name */
2121 FALSE, /* partial_inplace */
2122 0, /* src_mask */
2123 ONES (64), /* dst_mask */
2124 FALSE), /* pcrel_offset */
2125
5bd4f169
AM		 2126 /* GNU extension to record C++ vtable hierarchy. */
2127 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2128 0, /* rightshift */
2129 0, /* size (0 = byte, 1 = short, 2 = long) */
2130 0, /* bitsize */
b34976b6 2131 FALSE, /* pc_relative */
5bd4f169
AM		 2132 0, /* bitpos */
2133 complain_overflow_dont, /* complain_on_overflow */
2134 NULL, /* special_function */
2135 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 2136 FALSE, /* partial_inplace */
5bd4f169
AM		 2137 0, /* src_mask */
2138 0, /* dst_mask */
b34976b6 2139 FALSE), /* pcrel_offset */
5bd4f169
AM		 2140
2141 /* GNU extension to record C++ vtable member usage. */
2142 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2143 0, /* rightshift */
2144 0, /* size (0 = byte, 1 = short, 2 = long) */
2145 0, /* bitsize */
b34976b6 2146 FALSE, /* pc_relative */
5bd4f169
AM		 2147 0, /* bitpos */
2148 complain_overflow_dont, /* complain_on_overflow */
2149 NULL, /* special_function */
2150 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 2151 FALSE, /* partial_inplace */
5bd4f169
AM		 2152 0, /* src_mask */
2153 0, /* dst_mask */
b34976b6 2154 FALSE), /* pcrel_offset */
5bd4f169
AM		 2155};
2156
2157\f
2158/* Initialize the ppc64_elf_howto_table, so that linear accesses can
2159 be done. */
2160
2161static void
4ce794b7 2162ppc_howto_init (void)
5bd4f169
AM		 2163{
2164 unsigned int i, type;
2165
2166 for (i = 0;
2167 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2168 i++)
2169 {
2170 type = ppc64_elf_howto_raw[i].type;
2171 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2172 / sizeof (ppc64_elf_howto_table[0])));
2173 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2174 }
2175}
2176
2177static reloc_howto_type *
4ce794b7
AM		 2178ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2179 bfd_reloc_code_real_type code)
5bd4f169 2180{
411e1bfb 2181 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 2182
2183 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2184 /* Initialize howto table if needed. */
2185 ppc_howto_init ();
2186
4ce794b7 2187 switch (code)
5bd4f169
AM		 2188 {
2189 default:
4ce794b7 2190 return NULL;
5bd4f169 2191
411e1bfb
AM		 2192 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2193 break;
2194 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2195 break;
2196 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2197 break;
2198 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2199 break;
2200 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2201 break;
2202 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2203 break;
f9c6b907
AM		 2204 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2205 break;
411e1bfb 2206 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 2207 break;
f9c6b907
AM		 2208 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2209 break;
411e1bfb 2210 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 2211 break;
411e1bfb 2212 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 2213 break;
411e1bfb 2214 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 2215 break;
411e1bfb 2216 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 2217 break;
411e1bfb 2218 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 2219 break;
411e1bfb 2220 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 2221 break;
411e1bfb 2222 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 2223 break;
411e1bfb 2224 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 2225 break;
411e1bfb 2226 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 2227 break;
411e1bfb 2228 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 2229 break;
411e1bfb 2230 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 2231 break;
411e1bfb 2232 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 2233 break;
411e1bfb 2234 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 2235 break;
411e1bfb 2236 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 2237 break;
411e1bfb 2238 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 2239 break;
411e1bfb 2240 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 2241 break;
411e1bfb 2242 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 2243 break;
411e1bfb 2244 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 2245 break;
411e1bfb 2246 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 2247 break;
411e1bfb 2248 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 2249 break;
411e1bfb 2250 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 2251 break;
411e1bfb 2252 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 2253 break;
411e1bfb 2254 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 2255 break;
411e1bfb 2256 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 2257 break;
411e1bfb 2258 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 2259 break;
411e1bfb 2260 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 2261 break;
411e1bfb 2262 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 2263 break;
411e1bfb 2264 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 2265 break;
411e1bfb 2266 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 2267 break;
411e1bfb 2268 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 2269 break;
411e1bfb 2270 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 2271 break;
411e1bfb 2272 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 2273 break;
411e1bfb 2274 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 2275 break;
411e1bfb 2276 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 2277 break;
411e1bfb 2278 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 2279 break;
411e1bfb 2280 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 2281 break;
411e1bfb 2282 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2283 break;
411e1bfb 2284 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2285 break;
411e1bfb 2286 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2287 break;
411e1bfb 2288 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2289 break;
411e1bfb 2290 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2291 break;
411e1bfb 2292 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2293 break;
411e1bfb 2294 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2295 break;
411e1bfb 2296 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2297 break;
411e1bfb 2298 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2299 break;
411e1bfb 2300 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2301 break;
411e1bfb 2302 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2303 break;
411e1bfb 2304 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2305 break;
411e1bfb 2306 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2307 break;
411e1bfb 2308 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2309 break;
411e1bfb 2310 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2311 break;
411e1bfb 2312 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2313 break;
411e1bfb 2314 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2315 break;
727fc41e
AM		 2316 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2317 break;
2318 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2319 break;
411e1bfb 2320 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2321 break;
411e1bfb 2322 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2323 break;
411e1bfb 2324 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2325 break;
411e1bfb 2326 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2327 break;
f9c6b907
AM		 2328 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2329 break;
411e1bfb 2330 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2331 break;
f9c6b907
AM		 2332 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2333 break;
411e1bfb 2334 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2335 break;
411e1bfb
AM		 2336 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2337 break;
2338 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2339 break;
2340 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2341 break;
f9c6b907
AM		 2342 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2343 break;
411e1bfb
AM		 2344 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2345 break;
f9c6b907
AM		 2346 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2347 break;
411e1bfb
AM		 2348 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2349 break;
2350 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2351 break;
2352 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2353 break;
2354 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2355 break;
2356 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2357 break;
2358 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2359 break;
2360 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2361 break;
2362 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2363 break;
2364 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2365 break;
2366 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2367 break;
2368 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2369 break;
2370 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2371 break;
2372 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2373 break;
2374 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2375 break;
2376 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2377 break;
2378 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2379 break;
2380 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2381 break;
2382 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2383 break;
2384 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2385 break;
2386 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2387 break;
2388 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2389 break;
2390 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2391 break;
2392 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2393 break;
2394 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2395 break;
2396 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2397 break;
2398 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2399 break;
2400 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2401 break;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2403 break;
2404 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2405 break;
25f23106
AM		 2406 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2407 break;
2408 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2409 break;
2410 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2411 break;
2412 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2413 break;
45965137
AM		 2414 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2415 break;
411e1bfb
AM		 2416 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2417 break;
2418 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2419 break;
2420 }
2421
4ce794b7 2422 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2423};
2424
157090f7
AM		 2425static reloc_howto_type *
2426ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2427 const char *r_name)
2428{
2429 unsigned int i;
2430
2431 for (i = 0;
2432 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2433 i++)
2434 if (ppc64_elf_howto_raw[i].name != NULL
2435 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2436 return &ppc64_elf_howto_raw[i];
2437
2438 return NULL;
2439}
2440
5bd4f169
AM		 2441/* Set the howto pointer for a PowerPC ELF reloc. */
2442
2443static void
4ce794b7
AM		 2444ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2445 Elf_Internal_Rela *dst)
5bd4f169 2446{
65f38f15
AM		 2447 unsigned int type;
2448
ef60b7ff 2449 /* Initialize howto table if needed. */
5bd4f169 2450 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2451 ppc_howto_init ();
2452
65f38f15 2453 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ		 2454 if (type >= (sizeof (ppc64_elf_howto_table)
2455 / sizeof (ppc64_elf_howto_table[0])))
2456 {
2457 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC		 2458 abfd, (int) type);
2459 type = R_PPC64_NONE;
d0fb9a8d 2460 }
65f38f15 2461 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2462}
2463
04c9666a 2464/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2465
2466static bfd_reloc_status_type
4ce794b7
AM		 2467ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2468 void *data, asection *input_section,
2469 bfd *output_bfd, char **error_message)
5bd4f169 2470{
805fc799
AM		 2471 /* If this is a relocatable link (output_bfd test tells us), just
2472 call the generic function. Any adjustment will be done at final
2473 link time. */
2474 if (output_bfd != NULL)
cedb70c5 2475 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2476 input_section, output_bfd, error_message);
2477
2478 /* Adjust the addend for sign extension of the low 16 bits.
2479 We won't actually be using the low 16 bits, so trashing them
2480 doesn't matter. */
2481 reloc_entry->addend += 0x8000;
2482 return bfd_reloc_continue;
2483}
5bd4f169 2484
2441e016
AM		 2485static bfd_reloc_status_type
2486ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2487 void *data, asection *input_section,
2488 bfd *output_bfd, char **error_message)
2489{
2490 if (output_bfd != NULL)
2491 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2492 input_section, output_bfd, error_message);
2493
699733f6
AM		 2494 if (strcmp (symbol->section->name, ".opd") == 0
2495 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2496 {
2497 bfd_vma dest = opd_entry_value (symbol->section,
2498 symbol->value + reloc_entry->addend,
aef36ac1 2499 NULL, NULL, FALSE);
2441e016
AM		 2500 if (dest != (bfd_vma) -1)
2501 reloc_entry->addend = dest - (symbol->value
2502 + symbol->section->output_section->vma
2503 + symbol->section->output_offset);
2504 }
810d4e75
AM		 2505 else
2506 {
2507 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2508
2509 if (symbol->section->owner != abfd
2510 && abiversion (symbol->section->owner) >= 2)
2511 {
2512 unsigned int i;
2513
2514 for (i = 0; i < symbol->section->owner->symcount; ++i)
2515 {
2516 asymbol *symdef = symbol->section->owner->outsymbols[i];
2517
2518 if (strcmp (symdef->name, symbol->name) == 0)
2519 {
2520 elfsym = (elf_symbol_type *) symdef;
2521 break;
2522 }
2523 }
2524 }
2525 reloc_entry->addend
2526 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2527 }
2441e016
AM		 2528 return bfd_reloc_continue;
2529}
2530
805fc799 2531static bfd_reloc_status_type
4ce794b7
AM		 2532ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2533 void *data, asection *input_section,
2534 bfd *output_bfd, char **error_message)
805fc799
AM		 2535{
2536 long insn;
04c9666a 2537 enum elf_ppc64_reloc_type r_type;
805fc799 2538 bfd_size_type octets;
794e51c0
AM		 2539 /* Assume 'at' branch hints. */
2540 bfd_boolean is_isa_v2 = TRUE;
805fc799
AM		 2541
2542 /* If this is a relocatable link (output_bfd test tells us), just
2543 call the generic function. Any adjustment will be done at final
2544 link time. */
5bd4f169 2545 if (output_bfd != NULL)
cedb70c5 2546 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2547 input_section, output_bfd, error_message);
2548
2549 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2550 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2551 insn &= ~(0x01 << 21);
4ce794b7 2552 r_type = reloc_entry->howto->type;
805fc799
AM		 2553 if (r_type == R_PPC64_ADDR14_BRTAKEN
2554 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2555 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799 2556
794e51c0 2557 if (is_isa_v2)
5bd4f169 2558 {
805fc799
AM		 2559 /* Set 'a' bit. This is 0b00010 in BO field for branch
2560 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2561 for branch on CTR insns (BO == 1a00t or 1a01t). */
2562 if ((insn & (0x14 << 21)) == (0x04 << 21))
2563 insn |= 0x02 << 21;
2564 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2565 insn |= 0x08 << 21;
2566 else
2441e016 2567 goto out;
5bd4f169 2568 }
805fc799
AM		 2569 else
2570 {
2571 bfd_vma target = 0;
2572 bfd_vma from;
5bd4f169 2573
805fc799
AM		 2574 if (!bfd_is_com_section (symbol->section))
2575 target = symbol->value;
2576 target += symbol->section->output_section->vma;
2577 target += symbol->section->output_offset;
2578 target += reloc_entry->addend;
5bd4f169 2579
805fc799
AM		 2580 from = (reloc_entry->address
2581 + input_section->output_offset
2582 + input_section->output_section->vma);
5bd4f169 2583
805fc799
AM		 2584 /* Invert 'y' bit if not the default. */
2585 if ((bfd_signed_vma) (target - from) < 0)
2586 insn ^= 0x01 << 21;
2587 }
4ce794b7 2588 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2589 out:
2590 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2591 input_section, output_bfd, error_message);
805fc799 2592}
5bd4f169 2593
805fc799 2594static bfd_reloc_status_type
4ce794b7
AM		 2595ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2596 void *data, asection *input_section,
2597 bfd *output_bfd, char **error_message)
805fc799
AM		 2598{
2599 /* If this is a relocatable link (output_bfd test tells us), just
2600 call the generic function. Any adjustment will be done at final
2601 link time. */
2602 if (output_bfd != NULL)
cedb70c5 2603 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2604 input_section, output_bfd, error_message);
5bd4f169 2605
805fc799
AM		 2606 /* Subtract the symbol section base address. */
2607 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2608 return bfd_reloc_continue;
2609}
2610
805fc799 2611static bfd_reloc_status_type
4ce794b7
AM		 2612ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2613 void *data, asection *input_section,
2614 bfd *output_bfd, char **error_message)
805fc799
AM		 2615{
2616 /* If this is a relocatable link (output_bfd test tells us), just
2617 call the generic function. Any adjustment will be done at final
2618 link time. */
2619 if (output_bfd != NULL)
cedb70c5 2620 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2621 input_section, output_bfd, error_message);
2622
2623 /* Subtract the symbol section base address. */
2624 reloc_entry->addend -= symbol->section->output_section->vma;
2625
2626 /* Adjust the addend for sign extension of the low 16 bits. */
2627 reloc_entry->addend += 0x8000;
2628 return bfd_reloc_continue;
2629}
2630
2631static bfd_reloc_status_type
4ce794b7
AM		 2632ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2633 void *data, asection *input_section,
2634 bfd *output_bfd, char **error_message)
805fc799
AM		 2635{
2636 bfd_vma TOCstart;
2637
2638 /* If this is a relocatable link (output_bfd test tells us), just
2639 call the generic function. Any adjustment will be done at final
2640 link time. */
2641 if (output_bfd != NULL)
cedb70c5 2642 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2643 input_section, output_bfd, error_message);
2644
2645 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2646 if (TOCstart == 0)
1c865ab2 2647 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2648
2649 /* Subtract the TOC base address. */
2650 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2651 return bfd_reloc_continue;
2652}
2653
2654static bfd_reloc_status_type
4ce794b7
AM		 2655ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2656 void *data, asection *input_section,
2657 bfd *output_bfd, char **error_message)
805fc799
AM		 2658{
2659 bfd_vma TOCstart;
2660
2661 /* If this is a relocatable link (output_bfd test tells us), just
2662 call the generic function. Any adjustment will be done at final
2663 link time. */
2664 if (output_bfd != NULL)
cedb70c5 2665 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2666 input_section, output_bfd, error_message);
2667
2668 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2669 if (TOCstart == 0)
1c865ab2 2670 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2671
2672 /* Subtract the TOC base address. */
2673 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2674
2675 /* Adjust the addend for sign extension of the low 16 bits. */
2676 reloc_entry->addend += 0x8000;
2677 return bfd_reloc_continue;
2678}
2679
2680static bfd_reloc_status_type
4ce794b7
AM		 2681ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2682 void *data, asection *input_section,
2683 bfd *output_bfd, char **error_message)
805fc799
AM		 2684{
2685 bfd_vma TOCstart;
2686 bfd_size_type octets;
2687
2688 /* If this is a relocatable link (output_bfd test tells us), just
2689 call the generic function. Any adjustment will be done at final
2690 link time. */
2691 if (output_bfd != NULL)
cedb70c5 2692 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2693 input_section, output_bfd, error_message);
2694
2695 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2696 if (TOCstart == 0)
1c865ab2 2697 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2698
2699 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2700 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2701 return bfd_reloc_ok;
2702}
2703
2704static bfd_reloc_status_type
4ce794b7
AM		 2705ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2706 void *data, asection *input_section,
2707 bfd *output_bfd, char **error_message)
805fc799
AM		 2708{
2709 /* If this is a relocatable link (output_bfd test tells us), just
2710 call the generic function. Any adjustment will be done at final
2711 link time. */
2712 if (output_bfd != NULL)
cedb70c5 2713 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2714 input_section, output_bfd, error_message);
2715
2716 if (error_message != NULL)
2717 {
2718 static char buf[60];
2719 sprintf (buf, "generic linker can't handle %s",
2720 reloc_entry->howto->name);
2721 *error_message = buf;
2722 }
2723 return bfd_reloc_dangerous;
2724}
2725
927be08e
AM		 2726/* Track GOT entries needed for a given symbol. We might need more
2727 than one got entry per symbol. */
2728struct got_entry
2729{
2730 struct got_entry *next;
2731
2732 /* The symbol addend that we'll be placing in the GOT. */
2733 bfd_vma addend;
2734
2735 /* Unlike other ELF targets, we use separate GOT entries for the same
2736 symbol referenced from different input files. This is to support
2737 automatic multiple TOC/GOT sections, where the TOC base can vary
2738 from one input file to another. After partitioning into TOC groups
2739 we merge entries within the group.
2740
2741 Point to the BFD owning this GOT entry. */
2742 bfd *owner;
2743
2744 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2745 TLS_TPREL or TLS_DTPREL for tls entries. */
f961d9dd 2746 unsigned char tls_type;
927be08e
AM		 2747
2748 /* Non-zero if got.ent points to real entry. */
f961d9dd 2749 unsigned char is_indirect;
927be08e
AM		 2750
2751 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2752 union
2753 {
2754 bfd_signed_vma refcount;
2755 bfd_vma offset;
2756 struct got_entry *ent;
2757 } got;
2758};
2759
2760/* The same for PLT. */
2761struct plt_entry
2762{
2763 struct plt_entry *next;
2764
2765 bfd_vma addend;
2766
2767 union
2768 {
2769 bfd_signed_vma refcount;
2770 bfd_vma offset;
2771 } plt;
2772};
2773
e717da7e
AM		 2774struct ppc64_elf_obj_tdata
2775{
2776 struct elf_obj_tdata elf;
2777
2778 /* Shortcuts to dynamic linker sections. */
2779 asection *got;
2780 asection *relgot;
2781
b3fac117
AM		 2782 /* Used during garbage collection. We attach global symbols defined
2783 on removed .opd entries to this section so that the sym is removed. */
2784 asection *deleted_section;
81688140 2785
927be08e 2786 /* TLS local dynamic got entry handling. Support for multiple GOT
e717da7e 2787 sections means we potentially need one of these for each input bfd. */
927be08e 2788 struct got_entry tlsld_got;
8860955f 2789
729eabd5
AM		 2790 union {
2791 /* A copy of relocs before they are modified for --emit-relocs. */
2792 Elf_Internal_Rela *relocs;
2793
2794 /* Section contents. */
2795 bfd_byte *contents;
2796 } opd;
d77c8a4b
AM		 2797
2798 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2799 the reloc to be in the range -32768 to 32767. */
98528052
AM		 2800 unsigned int has_small_toc_reloc : 1;
2801
560c8763
AM		 2802 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2803 instruction not one we handle. */
2804 unsigned int unexpected_toc_insn : 1;
e717da7e
AM		 2805};
2806
2807#define ppc64_elf_tdata(bfd) \
2808 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2809
2810#define ppc64_tlsld_got(bfd) \
2811 (&ppc64_elf_tdata (bfd)->tlsld_got)
2812
0c8d6e5c
AM		 2813#define is_ppc64_elf(bfd) \
2814 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2815 && elf_object_id (bfd) == PPC64_ELF_DATA)
0c8d6e5c 2816
e717da7e
AM		 2817/* Override the generic function because we store some extras. */
2818
2819static bfd_boolean
2820ppc64_elf_mkobject (bfd *abfd)
2821{
0ffa91dd 2822 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
4dfe6ac6 2823 PPC64_ELF_DATA);
e717da7e
AM		 2824}
2825
feee612b
AM		 2826/* Fix bad default arch selected for a 64 bit input bfd when the
2827 default is 32 bit. */
2828
b34976b6 2829static bfd_boolean
4ce794b7 2830ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2831{
2832 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2833 {
2834 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2835
2836 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2837 {
2838 /* Relies on arch after 32 bit default being 64 bit default. */
2839 abfd->arch_info = abfd->arch_info->next;
2840 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2841 }
2842 }
b34976b6 2843 return TRUE;
feee612b
AM		 2844}
2845
d37c89e5
AM		 2846/* Support for core dump NOTE sections. */
2847
2848static bfd_boolean
2849ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2850{
eea6121a 2851 size_t offset, size;
d37c89e5
AM		 2852
2853 if (note->descsz != 504)
2854 return FALSE;
2855
2856 /* pr_cursig */
228e534f 2857 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
d37c89e5
AM		 2858
2859 /* pr_pid */
228e534f 2860 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
d37c89e5
AM		 2861
2862 /* pr_reg */
2863 offset = 112;
eea6121a 2864 size = 384;
d37c89e5
AM		 2865
2866 /* Make a ".reg/999" section. */
2867 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2868 size, note->descpos + offset);
d37c89e5
AM		 2869}
2870
2871static bfd_boolean
2872ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2873{
2874 if (note->descsz != 136)
2875 return FALSE;
2876
228e534f 2877 elf_tdata (abfd)->core->pid
bc989cdc 2878 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 2879 elf_tdata (abfd)->core->program
d37c89e5 2880 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 2881 elf_tdata (abfd)->core->command
d37c89e5
AM		 2882 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2883
2884 return TRUE;
2885}
2886
183e98be
AM		 2887static char *
2888ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2889 ...)
2890{
2891 switch (note_type)
2892 {
2893 default:
2894 return NULL;
2895
2896 case NT_PRPSINFO:
2897 {
2898 char data[136];
2899 va_list ap;
2900
2901 va_start (ap, note_type);
75cd47ed 2902 memset (data, 0, sizeof (data));
183e98be
AM		 2903 strncpy (data + 40, va_arg (ap, const char *), 16);
2904 strncpy (data + 56, va_arg (ap, const char *), 80);
2905 va_end (ap);
2906 return elfcore_write_note (abfd, buf, bufsiz,
2907 "CORE", note_type, data, sizeof (data));
2908 }
2909
2910 case NT_PRSTATUS:
2911 {
2912 char data[504];
2913 va_list ap;
2914 long pid;
2915 int cursig;
2916 const void *greg;
2917
2918 va_start (ap, note_type);
2919 memset (data, 0, 112);
2920 pid = va_arg (ap, long);
2921 bfd_put_32 (abfd, pid, data + 32);
2922 cursig = va_arg (ap, int);
2923 bfd_put_16 (abfd, cursig, data + 12);
2924 greg = va_arg (ap, const void *);
2925 memcpy (data + 112, greg, 384);
2926 memset (data + 496, 0, 8);
2927 va_end (ap);
2928 return elfcore_write_note (abfd, buf, bufsiz,
2929 "CORE", note_type, data, sizeof (data));
2930 }
2931 }
2932}
2933
5d35169e
AM		 2934/* Add extra PPC sections. */
2935
b35d266b 2936static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2937{
0112cd26
NC		 2938 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2939 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2940 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2941 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2942 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2943 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2944 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2945};
2946
7c8fe5c4
AM		 2947enum _ppc64_sec_type {
2948 sec_normal = 0,
2949 sec_opd = 1,
2950 sec_toc = 2
2951};
2952
f0abc2a1
AM		 2953struct _ppc64_elf_section_data
2954{
2955 struct bfd_elf_section_data elf;
411e1bfb 2956
f0abc2a1
AM		 2957 union
2958 {
51aecdc5
AM		 2959 /* An array with one entry for each opd function descriptor,
2960 and some spares since opd entries may be either 16 or 24 bytes. */
2961#define OPD_NDX(OFF) ((OFF) >> 4)
74f0fb50
AM		 2962 struct _opd_sec_data
2963 {
2964 /* Points to the function code section for local opd entries. */
2965 asection **func_sec;
2966
2967 /* After editing .opd, adjust references to opd local syms. */
2968 long *adjust;
2969 } opd;
7c8fe5c4 2970
3a71aa26
AM		 2971 /* An array for toc sections, indexed by offset/8. */
2972 struct _toc_sec_data
2973 {
2974 /* Specifies the relocation symbol index used at a given toc offset. */
2975 unsigned *symndx;
2976
2977 /* And the relocation addend. */
2978 bfd_vma *add;
2979 } toc;
7c8fe5c4
AM		 2980 } u;
2981
2982 enum _ppc64_sec_type sec_type:2;
411e1bfb 2983
7c8fe5c4
AM		 2984 /* Flag set when small branches are detected. Used to
2985 select suitable defaults for the stub group size. */
2986 unsigned int has_14bit_branch:1;
f0abc2a1
AM		 2987};
2988
2989#define ppc64_elf_section_data(sec) \
411e1bfb 2990 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2991
2992static bfd_boolean
4ce794b7 2993ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2994{
f592407e
AM		 2995 if (!sec->used_by_bfd)
2996 {
2997 struct _ppc64_elf_section_data *sdata;
2998 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2999
f592407e
AM		 3000 sdata = bfd_zalloc (abfd, amt);
3001 if (sdata == NULL)
3002 return FALSE;
3003 sec->used_by_bfd = sdata;
3004 }
f0abc2a1
AM		 3005
3006 return _bfd_elf_new_section_hook (abfd, sec);
3007}
4025353c 3008
74f0fb50 3009static struct _opd_sec_data *
4025353c
AM		 3010get_opd_info (asection * sec)
3011{
3012 if (sec != NULL
3013 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 3014 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 3015 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM		 3016 return NULL;
3017}
90e3cdf2
JJ		 3018\f
3019/* Parameters for the qsort hook. */
90e3cdf2
JJ		 3020static bfd_boolean synthetic_relocatable;
3021
699733f6 3022/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 3023
3024static int
3025compare_symbols (const void *ap, const void *bp)
3026{
3027 const asymbol *a = * (const asymbol **) ap;
3028 const asymbol *b = * (const asymbol **) bp;
3029
699733f6
AM		 3030 /* Section symbols first. */
3031 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 3032 return -1;
699733f6 3033 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 3034 return 1;
3035
699733f6 3036 /* then .opd symbols. */
ffcfec52
AM		 3037 if (strcmp (a->section->name, ".opd") == 0
3038 && strcmp (b->section->name, ".opd") != 0)
90e3cdf2 3039 return -1;
ffcfec52
AM		 3040 if (strcmp (a->section->name, ".opd") != 0
3041 && strcmp (b->section->name, ".opd") == 0)
90e3cdf2
JJ		 3042 return 1;
3043
699733f6 3044 /* then other code symbols. */
90e3cdf2
JJ		 3045 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3046 == (SEC_CODE | SEC_ALLOC)
3047 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3048 != (SEC_CODE | SEC_ALLOC))
3049 return -1;
3050
3051 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3052 != (SEC_CODE | SEC_ALLOC)
3053 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3054 == (SEC_CODE | SEC_ALLOC))
3055 return 1;
3056
3057 if (synthetic_relocatable)
3058 {
3059 if (a->section->id < b->section->id)
3060 return -1;
3061
3062 if (a->section->id > b->section->id)
3063 return 1;
3064 }
3065
3066 if (a->value + a->section->vma < b->value + b->section->vma)
3067 return -1;
3068
3069 if (a->value + a->section->vma > b->value + b->section->vma)
3070 return 1;
3071
4d35a0aa
AM		 3072 /* For syms with the same value, prefer strong dynamic global function
3073 syms over other syms. */
3074 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3075 return -1;
3076
3077 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3078 return 1;
3079
3080 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3081 return -1;
3082
3083 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3084 return 1;
3085
3086 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3087 return -1;
3088
3089 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3090 return 1;
3091
3092 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3093 return -1;
3094
3095 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3096 return 1;
3097
90e3cdf2
JJ		 3098 return 0;
3099}
3100
699733f6 3101/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 3102
699733f6 3103static asymbol *
7292b3ac 3104sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
90e3cdf2 3105{
699733f6 3106 long mid;
90e3cdf2 3107
7292b3ac 3108 if (id == (unsigned) -1)
699733f6
AM		 3109 {
3110 while (lo < hi)
3111 {
3112 mid = (lo + hi) >> 1;
3113 if (syms[mid]->value + syms[mid]->section->vma < value)
3114 lo = mid + 1;
3115 else if (syms[mid]->value + syms[mid]->section->vma > value)
3116 hi = mid;
3117 else
3118 return syms[mid];
3119 }
3120 }
3121 else
3122 {
3123 while (lo < hi)
3124 {
3125 mid = (lo + hi) >> 1;
3126 if (syms[mid]->section->id < id)
3127 lo = mid + 1;
3128 else if (syms[mid]->section->id > id)
3129 hi = mid;
3130 else if (syms[mid]->value < value)
3131 lo = mid + 1;
3132 else if (syms[mid]->value > value)
3133 hi = mid;
3134 else
3135 return syms[mid];
3136 }
3137 }
3138 return NULL;
90e3cdf2
JJ		 3139}
3140
468392fb
AM		 3141static bfd_boolean
3142section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3143{
3144 bfd_vma vma = *(bfd_vma *) ptr;
3145 return ((section->flags & SEC_ALLOC) != 0
3146 && section->vma <= vma
3147 && vma < section->vma + section->size);
3148}
3149
699733f6 3150/* Create synthetic symbols, effectively restoring "dot-symbol" function
c4b0b099
AM		 3151 entry syms. Also generate @plt symbols for the glink branch table.
3152 Returns count of synthetic symbols in RET or -1 on error. */
90e3cdf2
JJ		 3153
3154static long
a7535cf3
AM		 3155ppc64_elf_get_synthetic_symtab (bfd *abfd,
3156 long static_count, asymbol **static_syms,
3157 long dyn_count, asymbol **dyn_syms,
c9727e01 3158 asymbol **ret)
90e3cdf2
JJ		 3159{
3160 asymbol *s;
699733f6
AM		 3161 long i;
3162 long count;
90e3cdf2 3163 char *names;
a7535cf3 3164 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
ee67d69a 3165 asection *opd = NULL;
90e3cdf2 3166 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 3167 asymbol **syms;
ee67d69a 3168 int abi = abiversion (abfd);
90e3cdf2
JJ		 3169
3170 *ret = NULL;
3171
ee67d69a
AM		 3172 if (abi < 2)
3173 {
3174 opd = bfd_get_section_by_name (abfd, ".opd");
3175 if (opd == NULL && abi == 1)
3176 return 0;
3177 }
90e3cdf2 3178
a7535cf3 3179 symcount = static_count;
c9727e01 3180 if (!relocatable)
a7535cf3 3181 symcount += dyn_count;
90e3cdf2 3182 if (symcount == 0)
c9727e01 3183 return 0;
90e3cdf2 3184
a7535cf3
AM		 3185 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3186 if (syms == NULL)
7356fed5 3187 return -1;
a7535cf3
AM		 3188
3189 if (!relocatable && static_count != 0 && dyn_count != 0)
3190 {
3191 /* Use both symbol tables. */
3192 memcpy (syms, static_syms, static_count * sizeof (*syms));
3193 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3194 }
3195 else if (!relocatable && static_count == 0)
3196 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3197 else
3198 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3199
90e3cdf2 3200 synthetic_relocatable = relocatable;
595da8c5 3201 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 3202
c9727e01
AM		 3203 if (!relocatable && symcount > 1)
3204 {
3205 long j;
3206 /* Trim duplicate syms, since we may have merged the normal and
3207 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 3208 different values, so trim any with the same value. */
c9727e01
AM		 3209 for (i = 1, j = 1; i < symcount; ++i)
3210 if (syms[i - 1]->value + syms[i - 1]->section->vma
3211 != syms[i]->value + syms[i]->section->vma)
3212 syms[j++] = syms[i];
3213 symcount = j;
3214 }
3215
699733f6 3216 i = 0;
ffcfec52 3217 if (strcmp (syms[i]->section->name, ".opd") == 0)
699733f6
AM		 3218 ++i;
3219 codesecsym = i;
90e3cdf2 3220
699733f6
AM		 3221 for (; i < symcount; ++i)
3222 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3223 != (SEC_CODE | SEC_ALLOC))
3224 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3225 break;
3226 codesecsymend = i;
90e3cdf2 3227
699733f6
AM		 3228 for (; i < symcount; ++i)
3229 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3230 break;
3231 secsymend = i;
90e3cdf2 3232
699733f6 3233 for (; i < symcount; ++i)
ffcfec52 3234 if (strcmp (syms[i]->section->name, ".opd") != 0)
699733f6
AM		 3235 break;
3236 opdsymend = i;
90e3cdf2 3237
699733f6
AM		 3238 for (; i < symcount; ++i)
3239 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3240 != (SEC_CODE | SEC_ALLOC))
3241 break;
3242 symcount = i;
3243
c9727e01 3244 count = 0;
90e3cdf2 3245
699733f6 3246 if (relocatable)
90e3cdf2 3247 {
699733f6
AM		 3248 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3249 arelent *r;
3250 size_t size;
3251 long relcount;
90e3cdf2 3252
468392fb
AM		 3253 if (opdsymend == secsymend)
3254 goto done;
3255
699733f6 3256 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 3257 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 3258 if (relcount == 0)
c9727e01 3259 goto done;
90e3cdf2 3260
7356fed5
AM		 3261 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3262 {
3263 count = -1;
3264 goto done;
3265 }
3266
699733f6 3267 size = 0;
595da8c5 3268 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 3269 {
3270 asymbol *sym;
90e3cdf2 3271
595da8c5 3272 while (r < opd->relocation + relcount
699733f6
AM		 3273 && r->address < syms[i]->value + opd->vma)
3274 ++r;
90e3cdf2 3275
595da8c5 3276 if (r == opd->relocation + relcount)
699733f6 3277 break;
90e3cdf2 3278
699733f6
AM		 3279 if (r->address != syms[i]->value + opd->vma)
3280 continue;
90e3cdf2 3281
699733f6
AM		 3282 if (r->howto->type != R_PPC64_ADDR64)
3283 continue;
90e3cdf2 3284
699733f6
AM		 3285 sym = *r->sym_ptr_ptr;
3286 if (!sym_exists_at (syms, opdsymend, symcount,
3287 sym->section->id, sym->value + r->addend))
3288 {
3289 ++count;
3290 size += sizeof (asymbol);
3291 size += strlen (syms[i]->name) + 2;
3292 }
3293 }
90e3cdf2 3294
c4b0b099
AM		 3295 if (size == 0)
3296 goto done;
699733f6
AM		 3297 s = *ret = bfd_malloc (size);
3298 if (s == NULL)
3299 {
7356fed5 3300 count = -1;
c9727e01 3301 goto done;
699733f6 3302 }
90e3cdf2 3303
699733f6 3304 names = (char *) (s + count);
90e3cdf2 3305
595da8c5 3306 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 3307 {
699733f6 3308 asymbol *sym;
90e3cdf2 3309
595da8c5 3310 while (r < opd->relocation + relcount
699733f6
AM		 3311 && r->address < syms[i]->value + opd->vma)
3312 ++r;
90e3cdf2 3313
595da8c5 3314 if (r == opd->relocation + relcount)
699733f6
AM		 3315 break;
3316
3317 if (r->address != syms[i]->value + opd->vma)
3318 continue;
3319
3320 if (r->howto->type != R_PPC64_ADDR64)
3321 continue;
90e3cdf2 3322
699733f6
AM		 3323 sym = *r->sym_ptr_ptr;
3324 if (!sym_exists_at (syms, opdsymend, symcount,
3325 sym->section->id, sym->value + r->addend))
3326 {
3327 size_t len;
3328
3329 *s = *syms[i];
6ba2a415 3330 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3331 s->section = sym->section;
3332 s->value = sym->value + r->addend;
3333 s->name = names;
3334 *names++ = '.';
3335 len = strlen (syms[i]->name);
3336 memcpy (names, syms[i]->name, len + 1);
3337 names += len + 1;
6f610d07
UW		 3338 /* Have udata.p point back to the original symbol this
3339 synthetic symbol was derived from. */
3340 s->udata.p = syms[i];
699733f6
AM		 3341 s++;
3342 }
3343 }
3344 }
3345 else
90e3cdf2 3346 {
468392fb 3347 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
ee67d69a 3348 bfd_byte *contents = NULL;
699733f6 3349 size_t size;
468392fb
AM		 3350 long plt_count = 0;
3351 bfd_vma glink_vma = 0, resolv_vma = 0;
3352 asection *dynamic, *glink = NULL, *relplt = NULL;
3353 arelent *p;
90e3cdf2 3354
ee67d69a 3355 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
699733f6 3356 {
c4b0b099
AM		 3357 free_contents_and_exit_err:
3358 count = -1;
ee67d69a 3359 free_contents_and_exit:
699733f6 3360 if (contents)
ee67d69a 3361 free (contents);
c9727e01 3362 goto done;
699733f6 3363 }
90e3cdf2 3364
699733f6
AM		 3365 size = 0;
3366 for (i = secsymend; i < opdsymend; ++i)
3367 {
3368 bfd_vma ent;
90e3cdf2 3369
5ef11c02
AM		 3370 /* Ignore bogus symbols. */
3371 if (syms[i]->value > opd->size - 8)
3372 continue;
3373
699733f6
AM		 3374 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3375 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3376 {
3377 ++count;
3378 size += sizeof (asymbol);
3379 size += strlen (syms[i]->name) + 2;
3380 }
3381 }
90e3cdf2 3382
468392fb 3383 /* Get start of .glink stubs from DT_PPC64_GLINK. */
066ee829
AM		 3384 if (dyn_count != 0
3385 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
468392fb
AM		 3386 {
3387 bfd_byte *dynbuf, *extdyn, *extdynend;
3388 size_t extdynsize;
3389 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3390
3391 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
c4b0b099 3392 goto free_contents_and_exit_err;
468392fb
AM		 3393
3394 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3395 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3396
3397 extdyn = dynbuf;
3398 extdynend = extdyn + dynamic->size;
3399 for (; extdyn < extdynend; extdyn += extdynsize)
3400 {
3401 Elf_Internal_Dyn dyn;
3402 (*swap_dyn_in) (abfd, extdyn, &dyn);
3403
3404 if (dyn.d_tag == DT_NULL)
3405 break;
3406
3407 if (dyn.d_tag == DT_PPC64_GLINK)
3408 {
b9e5796b
AM		 3409 /* The first glink stub starts at offset 32; see
3410 comment in ppc64_elf_finish_dynamic_sections. */
3411 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
468392fb
AM		 3412 /* The .glink section usually does not survive the final
3413 link; search for the section (usually .text) where the
3414 glink stubs now reside. */
3415 glink = bfd_sections_find_if (abfd, section_covers_vma,
3416 &glink_vma);
3417 break;
3418 }
3419 }
3420
3421 free (dynbuf);
3422 }
3423
3424 if (glink != NULL)
3425 {
3426 /* Determine __glink trampoline by reading the relative branch
3427 from the first glink stub. */
3428 bfd_byte buf[4];
b9e5796b
AM		 3429 unsigned int off = 0;
3430
3431 while (bfd_get_section_contents (abfd, glink, buf,
3432 glink_vma + off - glink->vma, 4))
468392fb
AM		 3433 {
3434 unsigned int insn = bfd_get_32 (abfd, buf);
3435 insn ^= B_DOT;
3436 if ((insn & ~0x3fffffc) == 0)
b9e5796b
AM		 3437 {
3438 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3439 break;
3440 }
3441 off += 4;
3442 if (off > 4)
3443 break;
468392fb
AM		 3444 }
3445
3446 if (resolv_vma)
3447 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
468392fb 3448
066ee829
AM		 3449 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3450 if (relplt != NULL)
3451 {
3452 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3453 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
c4b0b099 3454 goto free_contents_and_exit_err;
68ffbac6 3455
066ee829
AM		 3456 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3457 size += plt_count * sizeof (asymbol);
468392fb 3458
066ee829
AM		 3459 p = relplt->relocation;
3460 for (i = 0; i < plt_count; i++, p++)
e054468f
AM		 3461 {
3462 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3463 if (p->addend != 0)
3464 size += sizeof ("+0x") - 1 + 16;
3465 }
066ee829 3466 }
468392fb
AM		 3467 }
3468
c4b0b099
AM		 3469 if (size == 0)
3470 goto free_contents_and_exit;
699733f6
AM		 3471 s = *ret = bfd_malloc (size);
3472 if (s == NULL)
c4b0b099 3473 goto free_contents_and_exit_err;
90e3cdf2 3474
468392fb 3475 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3476
699733f6 3477 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3478 {
699733f6 3479 bfd_vma ent;
90e3cdf2 3480
5ef11c02
AM		 3481 if (syms[i]->value > opd->size - 8)
3482 continue;
3483
699733f6
AM		 3484 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3485 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3486 {
c9727e01 3487 long lo, hi;
699733f6 3488 size_t len;
c9727e01 3489 asection *sec = abfd->sections;
90e3cdf2 3490
699733f6
AM		 3491 *s = *syms[i];
3492 lo = codesecsym;
3493 hi = codesecsymend;
3494 while (lo < hi)
3495 {
c9727e01 3496 long mid = (lo + hi) >> 1;
699733f6
AM		 3497 if (syms[mid]->section->vma < ent)
3498 lo = mid + 1;
3499 else if (syms[mid]->section->vma > ent)
3500 hi = mid;
3501 else
c9727e01
AM		 3502 {
3503 sec = syms[mid]->section;
3504 break;
3505 }
699733f6
AM		 3506 }
3507
c9727e01 3508 if (lo >= hi && lo > codesecsym)
699733f6 3509 sec = syms[lo - 1]->section;
699733f6
AM		 3510
3511 for (; sec != NULL; sec = sec->next)
3512 {
3513 if (sec->vma > ent)
3514 break;
63524580
JK		 3515 /* SEC_LOAD may not be set if SEC is from a separate debug
3516 info file. */
3517 if ((sec->flags & SEC_ALLOC) == 0)
699733f6
AM		 3518 break;
3519 if ((sec->flags & SEC_CODE) != 0)
3520 s->section = sec;
3521 }
6ba2a415 3522 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3523 s->value = ent - s->section->vma;
3524 s->name = names;
3525 *names++ = '.';
3526 len = strlen (syms[i]->name);
3527 memcpy (names, syms[i]->name, len + 1);
3528 names += len + 1;
6f610d07
UW		 3529 /* Have udata.p point back to the original symbol this
3530 synthetic symbol was derived from. */
3531 s->udata.p = syms[i];
699733f6 3532 s++;
90e3cdf2 3533 }
90e3cdf2 3534 }
699733f6 3535 free (contents);
468392fb
AM		 3536
3537 if (glink != NULL && relplt != NULL)
3538 {
3539 if (resolv_vma)
3540 {
3541 /* Add a symbol for the main glink trampoline. */
86a4952b 3542 memset (s, 0, sizeof *s);
468392fb 3543 s->the_bfd = abfd;
6ba2a415 3544 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 3545 s->section = glink;
3546 s->value = resolv_vma - glink->vma;
3547 s->name = names;
3548 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3549 names += sizeof ("__glink_PLTresolve");
3550 s++;
3551 count++;
3552 }
3553
3554 /* FIXME: It would be very much nicer to put sym@plt on the
3555 stub rather than on the glink branch table entry. The
3556 objdump disassembler would then use a sensible symbol
3557 name on plt calls. The difficulty in doing so is
3558 a) finding the stubs, and,
3559 b) matching stubs against plt entries, and,
3560 c) there can be multiple stubs for a given plt entry.
3561
3562 Solving (a) could be done by code scanning, but older
3563 ppc64 binaries used different stubs to current code.
3564 (b) is the tricky one since you need to known the toc
3565 pointer for at least one function that uses a pic stub to
3566 be able to calculate the plt address referenced.
3567 (c) means gdb would need to set multiple breakpoints (or
3568 find the glink branch itself) when setting breakpoints
3569 for pending shared library loads. */
3570 p = relplt->relocation;
3571 for (i = 0; i < plt_count; i++, p++)
3572 {
3573 size_t len;
3574
3575 *s = **p->sym_ptr_ptr;
3576 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3577 we are defining a symbol, ensure one of them is set. */
3578 if ((s->flags & BSF_LOCAL) == 0)
3579 s->flags |= BSF_GLOBAL;
6ba2a415 3580 s->flags |= BSF_SYNTHETIC;
468392fb
AM		 3581 s->section = glink;
3582 s->value = glink_vma - glink->vma;
3583 s->name = names;
3584 s->udata.p = NULL;
3585 len = strlen ((*p->sym_ptr_ptr)->name);
3586 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3587 names += len;
e054468f
AM		 3588 if (p->addend != 0)
3589 {
3590 memcpy (names, "+0x", sizeof ("+0x") - 1);
3591 names += sizeof ("+0x") - 1;
3592 bfd_sprintf_vma (abfd, names, p->addend);
3593 names += strlen (names);
3594 }
468392fb
AM		 3595 memcpy (names, "@plt", sizeof ("@plt"));
3596 names += sizeof ("@plt");
3597 s++;
b9e5796b
AM		 3598 if (abi < 2)
3599 {
3600 glink_vma += 8;
3601 if (i >= 0x8000)
3602 glink_vma += 4;
3603 }
3604 else
468392fb
AM		 3605 glink_vma += 4;
3606 }
3607 count += plt_count;
3608 }
90e3cdf2
JJ		 3609 }
3610
c9727e01 3611 done:
a7535cf3 3612 free (syms);
90e3cdf2
JJ		 3613 return count;
3614}
5bd4f169 3615\f
65f38f15
AM		 3616/* The following functions are specific to the ELF linker, while
3617 functions above are used generally. Those named ppc64_elf_* are
3618 called by the main ELF linker code. They appear in this file more
3619 or less in the order in which they are called. eg.
3620 ppc64_elf_check_relocs is called early in the link process,
3621 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3622 called.
3623
3624 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3625 functions have both a function code symbol and a function descriptor
3626 symbol. A call to foo in a relocatable object file looks like:
3627
3628 . .text
3629 . x:
3630 . bl .foo
3631 . nop
3632
3633 The function definition in another object file might be:
3634
3635 . .section .opd
3636 . foo: .quad .foo
3637 . .quad .TOC.@tocbase
3638 . .quad 0
3639 .
3640 . .text
3641 . .foo: blr
3642
3643 When the linker resolves the call during a static link, the branch
3644 unsurprisingly just goes to .foo and the .opd information is unused.
3645 If the function definition is in a shared library, things are a little
3646 different: The call goes via a plt call stub, the opd information gets
3647 copied to the plt, and the linker patches the nop.
3648
3649 . x:
3650 . bl .foo_stub
3651 . ld 2,40(1)
3652 .
3653 .
3654 . .foo_stub:
71a39c98
AM		 3655 . std 2,40(1) # in practice, the call stub
3656 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3657 . addi 11,11,Lfoo@toc@l # this is the general idea
3658 . ld 12,0(11)
3659 . ld 2,8(11)
3660 . mtctr 12
3661 . ld 11,16(11)
e86ce104
AM		 3662 . bctr
3663 .
3664 . .section .plt
3665 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3666
3667 The "reloc ()" notation is supposed to indicate that the linker emits
3668 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3669 copying.
3670
3671 What are the difficulties here? Well, firstly, the relocations
3672 examined by the linker in check_relocs are against the function code
3673 sym .foo, while the dynamic relocation in the plt is emitted against
3674 the function descriptor symbol, foo. Somewhere along the line, we need
3675 to carefully copy dynamic link information from one symbol to the other.
3676 Secondly, the generic part of the elf linker will make .foo a dynamic
3677 symbol as is normal for most other backends. We need foo dynamic
3678 instead, at least for an application final link. However, when
3679 creating a shared library containing foo, we need to have both symbols
3680 dynamic so that references to .foo are satisfied during the early
3681 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3682 definition from some other object, eg. a static library.
3683
3684 Update: As of August 2004, we support a new convention. Function
3685 calls may use the function descriptor symbol, ie. "bl foo". This
3686 behaves exactly as "bl .foo". */
65f38f15 3687
1d483afe 3688/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM		 3689 selects those that must be copied when linking a shared library,
3690 even when the symbol is local. */
65f38f15 3691
1d483afe
AM		 3692static int
3693must_be_dyn_reloc (struct bfd_link_info *info,
3694 enum elf_ppc64_reloc_type r_type)
3695{
3696 switch (r_type)
3697 {
3698 default:
3699 return 1;
3700
3701 case R_PPC64_REL32:
3702 case R_PPC64_REL64:
3703 case R_PPC64_REL30:
3704 return 0;
3705
3706 case R_PPC64_TPREL16:
3707 case R_PPC64_TPREL16_LO:
3708 case R_PPC64_TPREL16_HI:
3709 case R_PPC64_TPREL16_HA:
3710 case R_PPC64_TPREL16_DS:
3711 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 3712 case R_PPC64_TPREL16_HIGH:
3713 case R_PPC64_TPREL16_HIGHA:
1d483afe
AM		 3714 case R_PPC64_TPREL16_HIGHER:
3715 case R_PPC64_TPREL16_HIGHERA:
3716 case R_PPC64_TPREL16_HIGHEST:
3717 case R_PPC64_TPREL16_HIGHESTA:
3718 case R_PPC64_TPREL64:
0e1862bb 3719 return !bfd_link_executable (info);
1d483afe
AM		 3720 }
3721}
65f38f15 3722
f4656909
AM		 3723/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3724 copying dynamic variables from a shared lib into an app's dynbss
3725 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3726 shared lib. With code that gcc generates, it's vital that this be
3727 enabled; In the PowerPC64 ABI, the address of a function is actually
3728 the address of a function descriptor, which resides in the .opd
3729 section. gcc uses the descriptor directly rather than going via the
3730 GOT as some other ABI's do, which means that initialized function
3731 pointers must reference the descriptor. Thus, a function pointer
3732 initialized to the address of a function in a shared library will
3733 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3734 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3735 presents a problem as a plt entry for that function is also
3736 initialized from the function descriptor symbol and the copy reloc
3737 may not be initialized first. */
a23b6845 3738#define ELIMINATE_COPY_RELOCS 1
f4656909 3739
721956f4 3740/* Section name for stubs is the associated section name plus this
29942be8
NC		 3741 string. */
3742#define STUB_SUFFIX ".stub"
721956f4
AM		 3743
3744/* Linker stubs.
3745 ppc_stub_long_branch:
3746 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3747 destination, but a 24 bit branch in a stub section will reach.
3748 . b dest
3749
3750 ppc_stub_plt_branch:
3751 Similar to the above, but a 24 bit branch in the stub section won't
3752 reach its destination.
71a39c98
AM		 3753 . addis %r11,%r2,xxx@toc@ha
3754 . ld %r12,xxx@toc@l(%r11)
3755 . mtctr %r12
721956f4
AM		 3756 . bctr
3757
3758 ppc_stub_plt_call:
2c66dc6c
AM		 3759 Used to call a function in a shared library. If it so happens that
3760 the plt entry referenced crosses a 64k boundary, then an extra
71a39c98 3761 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
721956f4 3762 . std %r2,40(%r1)
71a39c98
AM		 3763 . addis %r11,%r2,xxx@toc@ha
3764 . ld %r12,xxx+0@toc@l(%r11)
3765 . mtctr %r12
3766 . ld %r2,xxx+8@toc@l(%r11)
3767 . ld %r11,xxx+16@toc@l(%r11)
721956f4 3768 . bctr
ad8e1ba5
AM		 3769
3770 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3771 code to adjust the value and save r2 to support multiple toc sections.
3772 A ppc_stub_long_branch with an r2 offset looks like:
3773 . std %r2,40(%r1)
3774 . addis %r2,%r2,off@ha
3775 . addi %r2,%r2,off@l
3776 . b dest
3777
3778 A ppc_stub_plt_branch with an r2 offset looks like:
3779 . std %r2,40(%r1)
71a39c98
AM		 3780 . addis %r11,%r2,xxx@toc@ha
3781 . ld %r12,xxx@toc@l(%r11)
ad8e1ba5
AM		 3782 . addis %r2,%r2,off@ha
3783 . addi %r2,%r2,off@l
71a39c98 3784 . mtctr %r12
ad8e1ba5 3785 . bctr
ac2df442
AM		 3786
3787 In cases where the "addis" instruction would add zero, the "addis" is
3788 omitted and following instructions modified slightly in some cases.
721956f4
AM		 3789*/
3790
3791enum ppc_stub_type {
3792 ppc_stub_none,
3793 ppc_stub_long_branch,
ad8e1ba5 3794 ppc_stub_long_branch_r2off,
721956f4 3795 ppc_stub_plt_branch,
ad8e1ba5 3796 ppc_stub_plt_branch_r2off,
794e51c0 3797 ppc_stub_plt_call,
7341d5e2
AM		 3798 ppc_stub_plt_call_r2save,
3799 ppc_stub_global_entry
721956f4
AM		 3800};
3801
6f20ed8a
AM		 3802/* Information on stub grouping. */
3803struct map_stub
3804{
3805 /* The stub section. */
3806 asection *stub_sec;
3807 /* This is the section to which stubs in the group will be attached. */
3808 asection *link_sec;
3809};
3810
721956f4
AM		 3811struct ppc_stub_hash_entry {
3812
3813 /* Base hash table entry structure. */
3814 struct bfd_hash_entry root;
3815
ad8e1ba5
AM		 3816 enum ppc_stub_type stub_type;
3817
6f20ed8a
AM		 3818 /* Group information. */
3819 struct map_stub *group;
721956f4
AM		 3820
3821 /* Offset within stub_sec of the beginning of this stub. */
3822 bfd_vma stub_offset;
3823
3824 /* Given the symbol's value and its section we can determine its final
3825 value when building the stubs (so the stub knows where to jump. */
3826 bfd_vma target_value;
3827 asection *target_section;
3828
721956f4
AM		 3829 /* The symbol table entry, if any, that this was derived from. */
3830 struct ppc_link_hash_entry *h;
e054468f 3831 struct plt_entry *plt_ent;
721956f4 3832
6911b7dc
AM		 3833 /* Symbol st_other. */
3834 unsigned char other;
721956f4
AM		 3835};
3836
3837struct ppc_branch_hash_entry {
3838
3839 /* Base hash table entry structure. */
3840 struct bfd_hash_entry root;
3841
c456f082 3842 /* Offset within branch lookup table. */
721956f4
AM		 3843 unsigned int offset;
3844
3845 /* Generation marker. */
3846 unsigned int iter;
3847};
65f38f15 3848
19e08130
AM		 3849/* Used to track dynamic relocations for local symbols. */
3850struct ppc_dyn_relocs
3851{
3852 struct ppc_dyn_relocs *next;
3853
3854 /* The input section of the reloc. */
3855 asection *sec;
3856
3857 /* Total number of relocs copied for the input section. */
3858 unsigned int count : 31;
3859
3860 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3861 unsigned int ifunc : 1;
3862};
3863
65f38f15
AM		 3864struct ppc_link_hash_entry
3865{
3866 struct elf_link_hash_entry elf;
3867
b3fac117
AM		 3868 union {
3869 /* A pointer to the most recently used stub hash entry against this
3870 symbol. */
3871 struct ppc_stub_hash_entry *stub_cache;
3872
3873 /* A pointer to the next symbol starting with a '.' */
3874 struct ppc_link_hash_entry *next_dot_sym;
3875 } u;
721956f4 3876
65f38f15 3877 /* Track dynamic relocs copied for this symbol. */
6061a67d 3878 struct elf_dyn_relocs *dyn_relocs;
e86ce104 3879
721956f4 3880 /* Link between function code and descriptor symbols. */
34814b9f 3881 struct ppc_link_hash_entry *oh;
721956f4 3882
e86ce104
AM		 3883 /* Flag function code and descriptor symbols. */
3884 unsigned int is_func:1;
3885 unsigned int is_func_descriptor:1;
908b32fc 3886 unsigned int fake:1;
411e1bfb 3887
c5614fa4
AM		 3888 /* Whether global opd/toc sym has been adjusted or not.
3889 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3890 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3891 unsigned int adjust_done:1;
3892
99877b66
AM		 3893 /* Set if we twiddled this symbol to weak at some stage. */
3894 unsigned int was_undefined:1;
3895
411e1bfb 3896 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3897 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3898 corresponding relocs are encountered during check_relocs.
3899 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3900 indicate the corresponding GOT entry type is not needed.
3901 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3902 a TPREL one. We use a separate flag rather than setting TPREL
3903 just for convenience in distinguishing the two cases. */
3904#define TLS_GD 1 /* GD reloc. */
3905#define TLS_LD 2 /* LD reloc. */
3906#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3907#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3908#define TLS_TLS 16 /* Any TLS reloc. */
3909#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3910#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
e054468f 3911#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
f961d9dd 3912 unsigned char tls_mask;
65f38f15
AM		 3913};
3914
3915/* ppc64 ELF linker hash table. */
3916
3917struct ppc_link_hash_table
3918{
3919 struct elf_link_hash_table elf;
3920
721956f4
AM		 3921 /* The stub hash table. */
3922 struct bfd_hash_table stub_hash_table;
3923
3924 /* Another hash table for plt_branch stubs. */
3925 struct bfd_hash_table branch_hash_table;
3926
3b421ab3
AM		 3927 /* Hash table for function prologue tocsave. */
3928 htab_t tocsave_htab;
3929
e7d1c40c
AM		 3930 /* Various options and other info passed from the linker. */
3931 struct ppc64_elf_params *params;
721956f4 3932
6f20ed8a
AM		 3933 /* The size of sec_info below. */
3934 unsigned int sec_info_arr_size;
3935
3936 /* Per-section array of extra section info. Done this way rather
3937 than as part of ppc64_elf_section_data so we have the info for
3938 non-ppc64 sections. */
3939 struct
3940 {
3941 /* Along with elf_gp, specifies the TOC pointer used by this section. */
ad8e1ba5 3942 bfd_vma toc_off;
6f20ed8a
AM		 3943
3944 union
3945 {
3946 /* The section group that this section belongs to. */
3947 struct map_stub *group;
3948 /* A temp section list pointer. */
3949 asection *list;
3950 } u;
3951 } *sec_info;
721956f4 3952
ad8e1ba5
AM		 3953 /* Temp used when calculating TOC pointers. */
3954 bfd_vma toc_curr;
bf102f86
AM		 3955 bfd *toc_bfd;
3956 asection *toc_first_sec;
ad8e1ba5 3957
b3fac117
AM		 3958 /* Used when adding symbols. */
3959 struct ppc_link_hash_entry *dot_syms;
3960
33e44f2e 3961 /* Shortcuts to get to dynamic linker sections. */
4ce794b7
AM		 3962 asection *dynbss;
3963 asection *relbss;
3964 asection *glink;
82bd7b59 3965 asection *sfpr;
4ce794b7
AM		 3966 asection *brlt;
3967 asection *relbrlt;
58d180e8 3968 asection *glink_eh_frame;
ec338859 3969
8387904d
AM		 3970 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3971 struct ppc_link_hash_entry *tls_get_addr;
3972 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3973
927be08e
AM		 3974 /* The size of reliplt used by got entry relocs. */
3975 bfd_size_type got_reli_size;
3976
9b5ecbd0 3977 /* Statistics. */
7341d5e2 3978 unsigned long stub_count[ppc_stub_global_entry];
9b5ecbd0 3979
ee75fd95
AM		 3980 /* Number of stubs against global syms. */
3981 unsigned long stub_globals;
3982
ee67d69a
AM		 3983 /* Set if we're linking code with function descriptors. */
3984 unsigned int opd_abi:1;
3985
4c52953f 3986 /* Support for multiple toc sections. */
33c0ec9d 3987 unsigned int do_multi_toc:1;
4c52953f 3988 unsigned int multi_toc_needed:1;
927be08e 3989 unsigned int second_toc_pass:1;
67f0cbdb 3990 unsigned int do_toc_opt:1;
4c52953f 3991
5d1634d7 3992 /* Set on error. */
99877b66 3993 unsigned int stub_error:1;
721956f4 3994
f6c7c3e8 3995 /* Temp used by ppc64_elf_before_check_relocs. */
99877b66 3996 unsigned int twiddled_syms:1;
721956f4
AM		 3997
3998 /* Incremented every time we size stubs. */
3999 unsigned int stub_iteration;
5d1634d7 4000
87d72d41
AM		 4001 /* Small local sym cache. */
4002 struct sym_cache sym_cache;
65f38f15
AM		 4003};
4004
4c52953f
AM		 4005/* Rename some of the generic section flags to better document how they
4006 are used here. */
b0dddeec
AM		 4007
4008/* Nonzero if this section has TLS related relocations. */
4009#define has_tls_reloc sec_flg0
4010
4011/* Nonzero if this section has a call to __tls_get_addr. */
4012#define has_tls_get_addr_call sec_flg1
4013
4014/* Nonzero if this section has any toc or got relocs. */
4015#define has_toc_reloc sec_flg2
4016
4017/* Nonzero if this section has a call to another section that uses
4018 the toc or got. */
d77c8a4b 4019#define makes_toc_func_call sec_flg3
b0dddeec
AM		 4020
4021/* Recursion protection when determining above flag. */
d77c8a4b 4022#define call_check_in_progress sec_flg4
70cc837d 4023#define call_check_done sec_flg5
4c52953f 4024
65f38f15
AM		 4025/* Get the ppc64 ELF linker hash table from a link_info structure. */
4026
4027#define ppc_hash_table(p) \
4dfe6ac6
NC		 4028 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4029 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
65f38f15 4030
721956f4
AM		 4031#define ppc_stub_hash_lookup(table, string, create, copy) \
4032 ((struct ppc_stub_hash_entry *) \
4033 bfd_hash_lookup ((table), (string), (create), (copy)))
4034
4035#define ppc_branch_hash_lookup(table, string, create, copy) \
4036 ((struct ppc_branch_hash_entry *) \
4037 bfd_hash_lookup ((table), (string), (create), (copy)))
4038
4039/* Create an entry in the stub hash table. */
4040
4041static struct bfd_hash_entry *
4ce794b7
AM		 4042stub_hash_newfunc (struct bfd_hash_entry *entry,
4043 struct bfd_hash_table *table,
4044 const char *string)
721956f4
AM		 4045{
4046 /* Allocate the structure if it has not already been allocated by a
4047 subclass. */
4048 if (entry == NULL)
4049 {
4050 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4051 if (entry == NULL)
4052 return entry;
4053 }
4054
4055 /* Call the allocation method of the superclass. */
4056 entry = bfd_hash_newfunc (entry, table, string);
4057 if (entry != NULL)
4058 {
4059 struct ppc_stub_hash_entry *eh;
4060
4061 /* Initialize the local fields. */
4062 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 4063 eh->stub_type = ppc_stub_none;
6f20ed8a 4064 eh->group = NULL;
721956f4
AM		 4065 eh->stub_offset = 0;
4066 eh->target_value = 0;
4067 eh->target_section = NULL;
721956f4 4068 eh->h = NULL;
6911b7dc 4069 eh->plt_ent = NULL;
6911b7dc 4070 eh->other = 0;
721956f4
AM		 4071 }
4072
4073 return entry;
4074}
4075
4076/* Create an entry in the branch hash table. */
4077
4078static struct bfd_hash_entry *
4ce794b7
AM		 4079branch_hash_newfunc (struct bfd_hash_entry *entry,
4080 struct bfd_hash_table *table,
4081 const char *string)
721956f4
AM		 4082{
4083 /* Allocate the structure if it has not already been allocated by a
4084 subclass. */
4085 if (entry == NULL)
4086 {
4087 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4088 if (entry == NULL)
4089 return entry;
4090 }
4091
4092 /* Call the allocation method of the superclass. */
4093 entry = bfd_hash_newfunc (entry, table, string);
4094 if (entry != NULL)
4095 {
4096 struct ppc_branch_hash_entry *eh;
4097
4098 /* Initialize the local fields. */
4099 eh = (struct ppc_branch_hash_entry *) entry;
4100 eh->offset = 0;
4101 eh->iter = 0;
4102 }
4103
4104 return entry;
4105}
4106
65f38f15
AM		 4107/* Create an entry in a ppc64 ELF linker hash table. */
4108
4109static struct bfd_hash_entry *
4ce794b7
AM		 4110link_hash_newfunc (struct bfd_hash_entry *entry,
4111 struct bfd_hash_table *table,
4112 const char *string)
65f38f15
AM		 4113{
4114 /* Allocate the structure if it has not already been allocated by a
4115 subclass. */
4116 if (entry == NULL)
4117 {
4118 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4119 if (entry == NULL)
4120 return entry;
4121 }
4122
4123 /* Call the allocation method of the superclass. */
4124 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4125 if (entry != NULL)
4126 {
4127 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4128
b3fac117 4129 memset (&eh->u.stub_cache, 0,
908b32fc 4130 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 4131 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4132
4133 /* When making function calls, old ABI code references function entry
4134 points (dot symbols), while new ABI code references the function
4135 descriptor symbol. We need to make any combination of reference and
4136 definition work together, without breaking archive linking.
4137
4138 For a defined function "foo" and an undefined call to "bar":
4139 An old object defines "foo" and ".foo", references ".bar" (possibly
4140 "bar" too).
4141 A new object defines "foo" and references "bar".
4142
4143 A new object thus has no problem with its undefined symbols being
4144 satisfied by definitions in an old object. On the other hand, the
4145 old object won't have ".bar" satisfied by a new object.
4146
4147 Keep a list of newly added dot-symbols. */
4148
4149 if (string[0] == '.')
4150 {
4151 struct ppc_link_hash_table *htab;
4152
4153 htab = (struct ppc_link_hash_table *) table;
4154 eh->u.next_dot_sym = htab->dot_syms;
4155 htab->dot_syms = eh;
4156 }
65f38f15
AM		 4157 }
4158
4159 return entry;
4160}
4161
3b421ab3
AM		 4162struct tocsave_entry {
4163 asection *sec;
4164 bfd_vma offset;
4165};
4166
4167static hashval_t
4168tocsave_htab_hash (const void *p)
4169{
4170 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4171 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4172}
4173
4174static int
4175tocsave_htab_eq (const void *p1, const void *p2)
4176{
4177 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4178 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4179 return e1->sec == e2->sec && e1->offset == e2->offset;
4180}
4181
68faa637
AM		 4182/* Destroy a ppc64 ELF linker hash table. */
4183
4184static void
d495ab0d 4185ppc64_elf_link_hash_table_free (bfd *obfd)
68faa637 4186{
d495ab0d 4187 struct ppc_link_hash_table *htab;
68faa637 4188
d495ab0d 4189 htab = (struct ppc_link_hash_table *) obfd->link.hash;
68faa637
AM		 4190 if (htab->tocsave_htab)
4191 htab_delete (htab->tocsave_htab);
d495ab0d
AM		 4192 bfd_hash_table_free (&htab->branch_hash_table);
4193 bfd_hash_table_free (&htab->stub_hash_table);
4194 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 4195}
4196
65f38f15
AM		 4197/* Create a ppc64 ELF linker hash table. */
4198
4199static struct bfd_link_hash_table *
4ce794b7 4200ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 4201{
4202 struct ppc_link_hash_table *htab;
4203 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4204
4ce794b7 4205 htab = bfd_zmalloc (amt);
65f38f15
AM		 4206 if (htab == NULL)
4207 return NULL;
4208
66eb6687 4209 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 4210 sizeof (struct ppc_link_hash_entry),
4211 PPC64_ELF_DATA))
65f38f15 4212 {
e2d34d7d 4213 free (htab);
65f38f15
AM		 4214 return NULL;
4215 }
4216
721956f4 4217 /* Init the stub hash table too. */
66eb6687
AM		 4218 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4219 sizeof (struct ppc_stub_hash_entry)))
2915c55b 4220 {
d495ab0d 4221 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4222 return NULL;
4223 }
721956f4
AM		 4224
4225 /* And the branch hash table. */
66eb6687
AM		 4226 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4227 sizeof (struct ppc_branch_hash_entry)))
2915c55b
JK		 4228 {
4229 bfd_hash_table_free (&htab->stub_hash_table);
d495ab0d 4230 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4231 return NULL;
4232 }
721956f4 4233
3b421ab3
AM		 4234 htab->tocsave_htab = htab_try_create (1024,
4235 tocsave_htab_hash,
4236 tocsave_htab_eq,
4237 NULL);
4238 if (htab->tocsave_htab == NULL)
2915c55b 4239 {
d495ab0d 4240 ppc64_elf_link_hash_table_free (abfd);
2915c55b
JK		 4241 return NULL;
4242 }
d495ab0d 4243 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
3b421ab3 4244
3254fd24
AM		 4245 /* Initializing two fields of the union is just cosmetic. We really
4246 only care about glist, but when compiled on a 32-bit host the
4247 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4248 debugger inspection of these fields look nicer. */
a6aa5195
AM		 4249 htab->elf.init_got_refcount.refcount = 0;
4250 htab->elf.init_got_refcount.glist = NULL;
4251 htab->elf.init_plt_refcount.refcount = 0;
4252 htab->elf.init_plt_refcount.glist = NULL;
4253 htab->elf.init_got_offset.offset = 0;
4254 htab->elf.init_got_offset.glist = NULL;
4255 htab->elf.init_plt_offset.offset = 0;
4256 htab->elf.init_plt_offset.glist = NULL;
3254fd24 4257
65f38f15
AM		 4258 return &htab->elf.root;
4259}
4260
bfeb4a28
AM		 4261/* Create sections for linker generated code. */
4262
4263static bfd_boolean
4264create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4265{
4266 struct ppc_link_hash_table *htab;
4267 flagword flags;
4268
4269 htab = ppc_hash_table (info);
4270
4271 /* Create .sfpr for code to save and restore fp regs. */
4272 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4273 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4274 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4275 flags);
4276 if (htab->sfpr == NULL
4277 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4278 return FALSE;
4279
4280 /* Create .glink for lazy dynamic linking support. */
4281 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4282 flags);
4283 if (htab->glink == NULL
4284 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4285 return FALSE;
4286
4287 if (!info->no_ld_generated_unwind_info)
4288 {
4289 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4290 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4291 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4292 ".eh_frame",
4293 flags);
4294 if (htab->glink_eh_frame == NULL
4295 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4296 return FALSE;
4297 }
4298
4299 flags = SEC_ALLOC | SEC_LINKER_CREATED;
33e44f2e
AM		 4300 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4301 if (htab->elf.iplt == NULL
4302 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
bfeb4a28
AM		 4303 return FALSE;
4304
4305 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4306 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
33e44f2e
AM		 4307 htab->elf.irelplt
4308 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4309 if (htab->elf.irelplt == NULL
4310 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
bfeb4a28
AM		 4311 return FALSE;
4312
4313 /* Create branch lookup table for plt_branch stubs. */
4314 flags = (SEC_ALLOC | SEC_LOAD
4315 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4316 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4317 flags);
4318 if (htab->brlt == NULL
4319 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4320 return FALSE;
4321
0e1862bb 4322 if (!bfd_link_pic (info))
bfeb4a28
AM		 4323 return TRUE;
4324
4325 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4326 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4327 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4328 ".rela.branch_lt",
4329 flags);
4330 if (htab->relbrlt == NULL
4331 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4332 return FALSE;
4333
4334 return TRUE;
4335}
4336
e717da7e
AM		 4337/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4338
bfeb4a28 4339bfd_boolean
e7d1c40c
AM		 4340ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4341 struct ppc64_elf_params *params)
e717da7e
AM		 4342{
4343 struct ppc_link_hash_table *htab;
4344
e7d1c40c 4345 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
e717da7e
AM		 4346
4347/* Always hook our dynamic sections into the first bfd, which is the
4348 linker created stub bfd. This ensures that the GOT header is at
4349 the start of the output TOC section. */
4350 htab = ppc_hash_table (info);
4dfe6ac6 4351 if (htab == NULL)
bfeb4a28 4352 return FALSE;
e7d1c40c
AM		 4353 htab->elf.dynobj = params->stub_bfd;
4354 htab->params = params;
bfeb4a28 4355
0e1862bb 4356 if (bfd_link_relocatable (info))
bfeb4a28
AM		 4357 return TRUE;
4358
4359 return create_linkage_sections (htab->elf.dynobj, info);
e717da7e
AM		 4360}
4361
721956f4
AM		 4362/* Build a name for an entry in the stub hash table. */
4363
4364static char *
4ce794b7
AM		 4365ppc_stub_name (const asection *input_section,
4366 const asection *sym_sec,
4367 const struct ppc_link_hash_entry *h,
4368 const Elf_Internal_Rela *rel)
721956f4
AM		 4369{
4370 char *stub_name;
bcaa2f82 4371 ssize_t len;
721956f4
AM		 4372
4373 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4374 offsets from a sym as a branch target? In fact, we could
4375 probably assume the addend is always zero. */
4376 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4377
4378 if (h)
4379 {
4380 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4381 stub_name = bfd_malloc (len);
46de2a7c
AM		 4382 if (stub_name == NULL)
4383 return stub_name;
4384
bcaa2f82
AM		 4385 len = sprintf (stub_name, "%08x.%s+%x",
4386 input_section->id & 0xffffffff,
4387 h->elf.root.root.string,
4388 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 4389 }
4390 else
4391 {
ad8e1ba5 4392 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 4393 stub_name = bfd_malloc (len);
46de2a7c
AM		 4394 if (stub_name == NULL)
4395 return stub_name;
4396
bcaa2f82
AM		 4397 len = sprintf (stub_name, "%08x.%x:%x+%x",
4398 input_section->id & 0xffffffff,
4399 sym_sec->id & 0xffffffff,
4400 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4401 (int) rel->r_addend & 0xffffffff);
721956f4 4402 }
bcaa2f82 4403 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
ee75fd95 4404 stub_name[len - 2] = 0;
721956f4
AM		 4405 return stub_name;
4406}
4407
4408/* Look up an entry in the stub hash. Stub entries are cached because
4409 creating the stub name takes a bit of time. */
4410
4411static struct ppc_stub_hash_entry *
4ce794b7
AM		 4412ppc_get_stub_entry (const asection *input_section,
4413 const asection *sym_sec,
039b3fef 4414 struct ppc_link_hash_entry *h,
4ce794b7
AM		 4415 const Elf_Internal_Rela *rel,
4416 struct ppc_link_hash_table *htab)
721956f4
AM		 4417{
4418 struct ppc_stub_hash_entry *stub_entry;
6f20ed8a 4419 struct map_stub *group;
721956f4
AM		 4420
4421 /* If this input section is part of a group of sections sharing one
4422 stub section, then use the id of the first section in the group.
4423 Stub names need to include a section id, as there may well be
4424 more than one stub used to reach say, printf, and we need to
4425 distinguish between them. */
6f20ed8a 4426 group = htab->sec_info[input_section->id].u.group;
721956f4 4427
b3fac117
AM		 4428 if (h != NULL && h->u.stub_cache != NULL
4429 && h->u.stub_cache->h == h
6f20ed8a 4430 && h->u.stub_cache->group == group)
721956f4 4431 {
b3fac117 4432 stub_entry = h->u.stub_cache;
721956f4
AM		 4433 }
4434 else
4435 {
4436 char *stub_name;
4437
6f20ed8a 4438 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
721956f4
AM		 4439 if (stub_name == NULL)
4440 return NULL;
4441
4442 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 4443 stub_name, FALSE, FALSE);
721956f4 4444 if (h != NULL)
b3fac117 4445 h->u.stub_cache = stub_entry;
721956f4
AM		 4446
4447 free (stub_name);
4448 }
4449
4450 return stub_entry;
4451}
4452
4453/* Add a new stub entry to the stub hash. Not all fields of the new
4454 stub entry are initialised. */
4455
4456static struct ppc_stub_hash_entry *
4ce794b7
AM		 4457ppc_add_stub (const char *stub_name,
4458 asection *section,
25f53a85 4459 struct bfd_link_info *info)
721956f4 4460{
25f53a85 4461 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6f20ed8a 4462 struct map_stub *group;
721956f4
AM		 4463 asection *link_sec;
4464 asection *stub_sec;
4465 struct ppc_stub_hash_entry *stub_entry;
4466
6f20ed8a
AM		 4467 group = htab->sec_info[section->id].u.group;
4468 link_sec = group->link_sec;
4469 stub_sec = group->stub_sec;
721956f4
AM		 4470 if (stub_sec == NULL)
4471 {
6f20ed8a
AM		 4472 size_t namelen;
4473 bfd_size_type len;
4474 char *s_name;
721956f4 4475
6f20ed8a
AM		 4476 namelen = strlen (link_sec->name);
4477 len = namelen + sizeof (STUB_SUFFIX);
4478 s_name = bfd_alloc (htab->params->stub_bfd, len);
4479 if (s_name == NULL)
4480 return NULL;
721956f4 4481
6f20ed8a
AM		 4482 memcpy (s_name, link_sec->name, namelen);
4483 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4484 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4485 if (stub_sec == NULL)
4486 return NULL;
4487 group->stub_sec = stub_sec;
721956f4
AM		 4488 }
4489
4490 /* Enter this entry into the linker stub hash table. */
4491 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 4492 TRUE, FALSE);
721956f4
AM		 4493 if (stub_entry == NULL)
4494 {
8de848d8 4495 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
25f53a85 4496 section->owner, stub_name);
721956f4
AM		 4497 return NULL;
4498 }
4499
6f20ed8a 4500 stub_entry->group = group;
721956f4 4501 stub_entry->stub_offset = 0;
721956f4
AM		 4502 return stub_entry;
4503}
4504
e717da7e
AM		 4505/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4506 not already done. */
65f38f15 4507
b34976b6 4508static bfd_boolean
e717da7e 4509create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4510{
e717da7e
AM		 4511 asection *got, *relgot;
4512 flagword flags;
4513 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4514
0c8d6e5c 4515 if (!is_ppc64_elf (abfd))
0ffa91dd 4516 return FALSE;
4dfe6ac6
NC		 4517 if (htab == NULL)
4518 return FALSE;
0ffa91dd 4519
33e44f2e
AM		 4520 if (!htab->elf.sgot
4521 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4522 return FALSE;
e717da7e
AM		 4523
4524 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4525 | SEC_LINKER_CREATED);
4526
c456f082 4527 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4528 if (!got
e717da7e
AM		 4529 || !bfd_set_section_alignment (abfd, got, 3))
4530 return FALSE;
65f38f15 4531
c456f082
AM		 4532 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4533 flags | SEC_READONLY);
e717da7e 4534 if (!relgot
e717da7e 4535 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4536 return FALSE;
e717da7e
AM		 4537
4538 ppc64_elf_tdata (abfd)->got = got;
4539 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4540 return TRUE;
65f38f15 4541}
5bd4f169 4542
82bd7b59 4543/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4544
b34976b6 4545static bfd_boolean
4ce794b7 4546ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4547{
65f38f15 4548 struct ppc_link_hash_table *htab;
5bd4f169 4549
65f38f15 4550 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4551 return FALSE;
65f38f15 4552
e717da7e 4553 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4554 if (htab == NULL)
4555 return FALSE;
4556
3d4d4302 4557 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
0e1862bb 4558 if (!bfd_link_pic (info))
3d4d4302 4559 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
65f38f15 4560
33e44f2e 4561 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
0e1862bb 4562 || (!bfd_link_pic (info) && !htab->relbss))
65f38f15
AM		 4563 abort ();
4564
b34976b6 4565 return TRUE;
5bd4f169
AM		 4566}
4567
b31867b6
AM		 4568/* Follow indirect and warning symbol links. */
4569
4570static inline struct bfd_link_hash_entry *
4571follow_link (struct bfd_link_hash_entry *h)
4572{
4573 while (h->type == bfd_link_hash_indirect
4574 || h->type == bfd_link_hash_warning)
4575 h = h->u.i.link;
4576 return h;
4577}
4578
4579static inline struct elf_link_hash_entry *
4580elf_follow_link (struct elf_link_hash_entry *h)
4581{
4582 return (struct elf_link_hash_entry *) follow_link (&h->root);
4583}
4584
4585static inline struct ppc_link_hash_entry *
4586ppc_follow_link (struct ppc_link_hash_entry *h)
4587{
4588 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4589}
4590
40d16e0b
AM		 4591/* Merge PLT info on FROM with that on TO. */
4592
4593static void
4594move_plt_plist (struct ppc_link_hash_entry *from,
4595 struct ppc_link_hash_entry *to)
4596{
4597 if (from->elf.plt.plist != NULL)
4598 {
4599 if (to->elf.plt.plist != NULL)
4600 {
4601 struct plt_entry **entp;
4602 struct plt_entry *ent;
4603
4604 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4605 {
4606 struct plt_entry *dent;
4607
4608 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4609 if (dent->addend == ent->addend)
4610 {
4611 dent->plt.refcount += ent->plt.refcount;
4612 *entp = ent->next;
4613 break;
4614 }
4615 if (dent == NULL)
4616 entp = &ent->next;
4617 }
4618 *entp = to->elf.plt.plist;
4619 }
4620
4621 to->elf.plt.plist = from->elf.plt.plist;
4622 from->elf.plt.plist = NULL;
4623 }
4624}
4625
65f38f15
AM		 4626/* Copy the extra info we tack onto an elf_link_hash_entry. */
4627
4628static void
fcfa13d2
AM		 4629ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4630 struct elf_link_hash_entry *dir,
4631 struct elf_link_hash_entry *ind)
65f38f15
AM		 4632{
4633 struct ppc_link_hash_entry *edir, *eind;
4634
4635 edir = (struct ppc_link_hash_entry *) dir;
4636 eind = (struct ppc_link_hash_entry *) ind;
4637
c79d6685
AM		 4638 edir->is_func |= eind->is_func;
4639 edir->is_func_descriptor |= eind->is_func_descriptor;
4640 edir->tls_mask |= eind->tls_mask;
4641 if (eind->oh != NULL)
4642 edir->oh = ppc_follow_link (eind->oh);
4643
4644 /* If called to transfer flags for a weakdef during processing
4645 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4646 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4647 if (!(ELIMINATE_COPY_RELOCS
4648 && eind->elf.root.type != bfd_link_hash_indirect
4649 && edir->elf.dynamic_adjusted))
4650 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4651
4652 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4653 edir->elf.ref_regular |= eind->elf.ref_regular;
4654 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4655 edir->elf.needs_plt |= eind->elf.needs_plt;
a345bc8d 4656 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
c79d6685 4657
411e1bfb 4658 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4659 if (eind->dyn_relocs != NULL)
65f38f15 4660 {
bbd7ec4a
AM		 4661 if (edir->dyn_relocs != NULL)
4662 {
6061a67d
AM		 4663 struct elf_dyn_relocs **pp;
4664 struct elf_dyn_relocs *p;
bbd7ec4a 4665
fcfa13d2 4666 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 4667 list. Merge any entries against the same section. */
4668 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4669 {
6061a67d 4670 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 4671
4672 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4673 if (q->sec == p->sec)
4674 {
4675 q->pc_count += p->pc_count;
4676 q->count += p->count;
4677 *pp = p->next;
4678 break;
4679 }
4680 if (q == NULL)
4681 pp = &p->next;
4682 }
4683 *pp = edir->dyn_relocs;
4684 }
4685
65f38f15
AM		 4686 edir->dyn_relocs = eind->dyn_relocs;
4687 eind->dyn_relocs = NULL;
4688 }
65f38f15 4689
68ba6d40
AM		 4690 /* If we were called to copy over info for a weak sym, that's all.
4691 You might think dyn_relocs need not be copied over; After all,
4692 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 4693 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM		 4694 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4695 dyn_relocs in read-only sections, and it does so on what is the
4696 DIR sym here. */
4697 if (eind->elf.root.type != bfd_link_hash_indirect)
4698 return;
4699
81848ca0
AM		 4700 /* Copy over got entries that we may have already seen to the
4701 symbol which just became indirect. */
411e1bfb
AM		 4702 if (eind->elf.got.glist != NULL)
4703 {
4704 if (edir->elf.got.glist != NULL)
4705 {
4706 struct got_entry **entp;
4707 struct got_entry *ent;
4708
4709 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4710 {
4711 struct got_entry *dent;
4712
4713 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4714 if (dent->addend == ent->addend
e717da7e 4715 && dent->owner == ent->owner
411e1bfb
AM		 4716 && dent->tls_type == ent->tls_type)
4717 {
4718 dent->got.refcount += ent->got.refcount;
4719 *entp = ent->next;
4720 break;
4721 }
4722 if (dent == NULL)
4723 entp = &ent->next;
4724 }
4725 *entp = edir->elf.got.glist;
4726 }
4727
4728 edir->elf.got.glist = eind->elf.got.glist;
4729 eind->elf.got.glist = NULL;
4730 }
4731
4732 /* And plt entries. */
40d16e0b 4733 move_plt_plist (eind, edir);
411e1bfb 4734
fcfa13d2 4735 if (eind->elf.dynindx != -1)
411e1bfb 4736 {
fcfa13d2
AM		 4737 if (edir->elf.dynindx != -1)
4738 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4739 edir->elf.dynstr_index);
411e1bfb
AM		 4740 edir->elf.dynindx = eind->elf.dynindx;
4741 edir->elf.dynstr_index = eind->elf.dynstr_index;
4742 eind->elf.dynindx = -1;
4743 eind->elf.dynstr_index = 0;
4744 }
411e1bfb
AM		 4745}
4746
8387904d
AM		 4747/* Find the function descriptor hash entry from the given function code
4748 hash entry FH. Link the entries via their OH fields. */
4749
4750static struct ppc_link_hash_entry *
b31867b6 4751lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
8387904d
AM		 4752{
4753 struct ppc_link_hash_entry *fdh = fh->oh;
4754
4755 if (fdh == NULL)
4756 {
4757 const char *fd_name = fh->elf.root.root.string + 1;
4758
4759 fdh = (struct ppc_link_hash_entry *)
4760 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
b31867b6
AM		 4761 if (fdh == NULL)
4762 return fdh;
4763
4764 fdh->is_func_descriptor = 1;
4765 fdh->oh = fh;
4766 fh->is_func = 1;
4767 fh->oh = fdh;
8387904d
AM		 4768 }
4769
b31867b6 4770 return ppc_follow_link (fdh);
8387904d
AM		 4771}
4772
bb700d78
AM		 4773/* Make a fake function descriptor sym for the code sym FH. */
4774
4775static struct ppc_link_hash_entry *
4776make_fdh (struct bfd_link_info *info,
908b32fc 4777 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4778{
4779 bfd *abfd;
4780 asymbol *newsym;
4781 struct bfd_link_hash_entry *bh;
4782 struct ppc_link_hash_entry *fdh;
4783
4784 abfd = fh->elf.root.u.undef.abfd;
4785 newsym = bfd_make_empty_symbol (abfd);
4786 newsym->name = fh->elf.root.root.string + 1;
4787 newsym->section = bfd_und_section_ptr;
4788 newsym->value = 0;
908b32fc 4789 newsym->flags = BSF_WEAK;
bb700d78
AM		 4790
4791 bh = NULL;
4792 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4793 newsym->flags, newsym->section,
4794 newsym->value, NULL, FALSE, FALSE,
4795 &bh))
4796 return NULL;
4797
4798 fdh = (struct ppc_link_hash_entry *) bh;
4799 fdh->elf.non_elf = 0;
908b32fc
AM		 4800 fdh->fake = 1;
4801 fdh->is_func_descriptor = 1;
4802 fdh->oh = fh;
4803 fh->is_func = 1;
4804 fh->oh = fdh;
bb700d78
AM		 4805 return fdh;
4806}
4807
8387904d
AM		 4808/* Fix function descriptor symbols defined in .opd sections to be
4809 function type. */
555cd476
AM		 4810
4811static bfd_boolean
c16153ae 4812ppc64_elf_add_symbol_hook (bfd *ibfd,
e054468f 4813 struct bfd_link_info *info,
555cd476 4814 Elf_Internal_Sym *isym,
6911b7dc 4815 const char **name,
555cd476
AM		 4816 flagword *flags ATTRIBUTE_UNUSED,
4817 asection **sec,
b53dfeb2 4818 bfd_vma *value)
555cd476 4819{
f1885d1e
AM		 4820 if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4821 || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4822 && (ibfd->flags & DYNAMIC) == 0
4823 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
13a2df29 4824 elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
f64b2e8d 4825
b53dfeb2 4826 if (*sec != NULL
f1885d1e 4827 && strcmp ((*sec)->name, ".opd") == 0)
b53dfeb2
AM		 4828 {
4829 asection *code_sec;
4830
4831 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4832 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4833 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4834
4835 /* If the symbol is a function defined in .opd, and the function
4836 code is in a discarded group, let it appear to be undefined. */
0e1862bb 4837 if (!bfd_link_relocatable (info)
b53dfeb2
AM		 4838 && (*sec)->reloc_count != 0
4839 && opd_entry_value (*sec, *value, &code_sec, NULL,
4840 FALSE) != (bfd_vma) -1
4841 && discarded_section (code_sec))
4842 {
4843 *sec = bfd_und_section_ptr;
4844 isym->st_shndx = SHN_UNDEF;
4845 }
4846 }
dbd1e97e
AM		 4847 else if (*sec != NULL
4848 && strcmp ((*sec)->name, ".toc") == 0
4849 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4850 {
4851 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4852 if (htab != NULL)
4853 htab->params->object_in_toc = 1;
4854 }
433817dd 4855
6911b7dc
AM		 4856 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4857 {
4858 if (abiversion (ibfd) == 0)
4859 set_abiversion (ibfd, 2);
4860 else if (abiversion (ibfd) == 1)
4861 {
4862 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4863 " for ABI version 1\n"), name);
4864 bfd_set_error (bfd_error_bad_value);
4865 return FALSE;
4866 }
4867 }
4868
555cd476
AM		 4869 return TRUE;
4870}
4871
6911b7dc
AM		 4872/* Merge non-visibility st_other attributes: local entry point. */
4873
4874static void
4875ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4876 const Elf_Internal_Sym *isym,
4877 bfd_boolean definition,
4878 bfd_boolean dynamic)
4879{
4880 if (definition && !dynamic)
4881 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4882 | ELF_ST_VISIBILITY (h->other));
4883}
4884
8387904d 4885/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4886 inclusion of a new ABI object archive that defines "bar".
4887 NAME is a symbol defined in an archive. Return a symbol in the hash
4888 table that might be satisfied by the archive symbols. */
8387904d
AM		 4889
4890static struct elf_link_hash_entry *
4891ppc64_elf_archive_symbol_lookup (bfd *abfd,
4892 struct bfd_link_info *info,
4893 const char *name)
4894{
4895 struct elf_link_hash_entry *h;
4896 char *dot_name;
4897 size_t len;
4898
4899 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4900 if (h != NULL
4901 /* Don't return this sym if it is a fake function descriptor
4902 created by add_symbol_adjust. */
4903 && !(h->root.type == bfd_link_hash_undefweak
4904 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4905 return h;
4906
4907 if (name[0] == '.')
4908 return h;
4909
4910 len = strlen (name);
4911 dot_name = bfd_alloc (abfd, len + 2);
4912 if (dot_name == NULL)
4913 return (struct elf_link_hash_entry *) 0 - 1;
4914 dot_name[0] = '.';
4915 memcpy (dot_name + 1, name, len + 1);
4916 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4917 bfd_release (abfd, dot_name);
4918 return h;
4919}
4920
4921/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4922 new ABI object defines "bar". Well, at least, undefined dot symbols
4923 are made weak. This stops later archive searches from including an
4924 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4925 prevents the linker complaining about undefined symbols.
4926 We also check and correct mismatched symbol visibility here. The
4927 most restrictive visibility of the function descriptor and the
4928 function entry symbol is used. */
8387904d
AM		 4929
4930static bfd_boolean
b3fac117 4931add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4932{
8387904d
AM		 4933 struct ppc_link_hash_table *htab;
4934 struct ppc_link_hash_entry *fdh;
4935
b3fac117 4936 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4937 return TRUE;
4938
b3fac117
AM		 4939 if (eh->elf.root.type == bfd_link_hash_warning)
4940 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4941
b3fac117
AM		 4942 if (eh->elf.root.root.string[0] != '.')
4943 abort ();
8387904d 4944
b3fac117 4945 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4946 if (htab == NULL)
4947 return FALSE;
4948
b31867b6
AM		 4949 fdh = lookup_fdh (eh, htab);
4950 if (fdh == NULL)
4951 {
0e1862bb 4952 if (!bfd_link_relocatable (info)
b31867b6
AM		 4953 && (eh->elf.root.type == bfd_link_hash_undefined
4954 || eh->elf.root.type == bfd_link_hash_undefweak)
4955 && eh->elf.ref_regular)
4956 {
4957 /* Make an undefweak function descriptor sym, which is enough to
4958 pull in an --as-needed shared lib, but won't cause link
4959 errors. Archives are handled elsewhere. */
4960 fdh = make_fdh (info, eh);
4961 if (fdh == NULL)
4962 return FALSE;
4963 fdh->elf.ref_regular = 1;
4964 }
bb700d78 4965 }
b31867b6 4966 else
8387904d 4967 {
35b0ce59
AM		 4968 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4969 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4970 if (entry_vis < descr_vis)
4971 fdh->elf.other += entry_vis - descr_vis;
4972 else if (entry_vis > descr_vis)
4973 eh->elf.other += descr_vis - entry_vis;
4974
e87d886e
AM		 4975 if ((fdh->elf.root.type == bfd_link_hash_defined
4976 || fdh->elf.root.type == bfd_link_hash_defweak)
4977 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4978 {
4979 eh->elf.root.type = bfd_link_hash_undefweak;
4980 eh->was_undefined = 1;
4981 htab->twiddled_syms = 1;
4982 }
8387904d 4983 }
99877b66 4984
8387904d
AM		 4985 return TRUE;
4986}
4987
f6c7c3e8
AM		 4988/* Set up opd section info and abiversion for IBFD, and process list
4989 of dot-symbols we made in link_hash_newfunc. */
b3fac117 4990
8387904d 4991static bfd_boolean
f6c7c3e8 4992ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
8387904d 4993{
99877b66 4994 struct ppc_link_hash_table *htab;
b3fac117 4995 struct ppc_link_hash_entry **p, *eh;
459609d6 4996 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
433817dd 4997
459609d6 4998 if (opd != NULL && opd->size != 0)
b3fac117 4999 {
459609d6
AM		 5000 if (abiversion (ibfd) == 0)
5001 set_abiversion (ibfd, 1);
5002 else if (abiversion (ibfd) == 2)
f6c7c3e8 5003 {
459609d6
AM		 5004 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5005 " version %d\n"),
5006 ibfd, abiversion (ibfd));
5007 bfd_set_error (bfd_error_bad_value);
5008 return FALSE;
f6c7c3e8
AM		 5009 }
5010
459609d6
AM		 5011 if ((ibfd->flags & DYNAMIC) == 0
5012 && (opd->flags & SEC_RELOC) != 0
5013 && opd->reloc_count != 0
5014 && !bfd_is_abs_section (opd->output_section))
b3fac117 5015 {
459609d6
AM		 5016 /* Garbage collection needs some extra help with .opd sections.
5017 We don't want to necessarily keep everything referenced by
5018 relocs in .opd, as that would keep all functions. Instead,
5019 if we reference an .opd symbol (a function descriptor), we
5020 want to keep the function code symbol's section. This is
5021 easy for global symbols, but for local syms we need to keep
5022 information about the associated function section. */
5023 bfd_size_type amt;
5024 asection **opd_sym_map;
5025
51aecdc5 5026 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
459609d6
AM		 5027 opd_sym_map = bfd_zalloc (ibfd, amt);
5028 if (opd_sym_map == NULL)
b3fac117 5029 return FALSE;
459609d6
AM		 5030 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5031 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5032 ppc64_elf_section_data (opd)->sec_type = sec_opd;
b3fac117
AM		 5033 }
5034 }
5035
459609d6
AM		 5036 if (!is_ppc64_elf (info->output_bfd))
5037 return TRUE;
5038 htab = ppc_hash_table (info);
5039 if (htab == NULL)
5040 return FALSE;
5041
5042 /* For input files without an explicit abiversion in e_flags
5043 we should have flagged any with symbol st_other bits set
5044 as ELFv1 and above flagged those with .opd as ELFv2.
5045 Set the output abiversion if not yet set, and for any input
5046 still ambiguous, take its abiversion from the output.
5047 Differences in ABI are reported later. */
5048 if (abiversion (info->output_bfd) == 0)
5049 set_abiversion (info->output_bfd, abiversion (ibfd));
5050 else if (abiversion (ibfd) == 0)
5051 set_abiversion (ibfd, abiversion (info->output_bfd));
5052
5053 p = &htab->dot_syms;
5054 while ((eh = *p) != NULL)
5055 {
5056 *p = NULL;
5057 if (&eh->elf == htab->elf.hgot)
5058 ;
5059 else if (htab->elf.hgot == NULL
5060 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5061 htab->elf.hgot = &eh->elf;
5062 else if (!add_symbol_adjust (eh, info))
5063 return FALSE;
5064 p = &eh->u.next_dot_sym;
5065 }
5066
b3fac117
AM		 5067 /* Clear the list for non-ppc64 input files. */
5068 p = &htab->dot_syms;
5069 while ((eh = *p) != NULL)
5070 {
5071 *p = NULL;
5072 p = &eh->u.next_dot_sym;
5073 }
99877b66
AM		 5074
5075 /* We need to fix the undefs list for any syms we have twiddled to
5076 undef_weak. */
5077 if (htab->twiddled_syms)
5078 {
77cfaee6 5079 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 5080 htab->twiddled_syms = 0;
5081 }
b3fac117 5082 return TRUE;
8387904d
AM		 5083}
5084
97fed1c9
JJ		 5085/* Undo hash table changes when an --as-needed input file is determined
5086 not to be needed. */
5087
5088static bfd_boolean
e5034e59
AM		 5089ppc64_elf_notice_as_needed (bfd *ibfd,
5090 struct bfd_link_info *info,
5091 enum notice_asneeded_action act)
97fed1c9 5092{
e5034e59
AM		 5093 if (act == notice_not_needed)
5094 {
5095 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6 5096
e5034e59
AM		 5097 if (htab == NULL)
5098 return FALSE;
4dfe6ac6 5099
e5034e59
AM		 5100 htab->dot_syms = NULL;
5101 }
5102 return _bfd_elf_notice_as_needed (ibfd, info, act);
97fed1c9
JJ		 5103}
5104
aa374f67
AM		 5105/* If --just-symbols against a final linked binary, then assume we need
5106 toc adjusting stubs when calling functions defined there. */
5107
5108static void
5109ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5110{
5111 if ((sec->flags & SEC_CODE) != 0
5112 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5113 && is_ppc64_elf (sec->owner))
5114 {
2c3f079f
AM		 5115 if (abiversion (sec->owner) >= 2
5116 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
aa374f67
AM		 5117 sec->has_toc_reloc = 1;
5118 }
5119 _bfd_elf_link_just_syms (sec, info);
5120}
5121
e054468f 5122static struct plt_entry **
4ce794b7
AM		 5123update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5124 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 5125{
5126 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e054468f 5127 struct plt_entry **local_plt;
f961d9dd 5128 unsigned char *local_got_tls_masks;
411e1bfb
AM		 5129
5130 if (local_got_ents == NULL)
5131 {
5132 bfd_size_type size = symtab_hdr->sh_info;
5133
e054468f
AM		 5134 size *= (sizeof (*local_got_ents)
5135 + sizeof (*local_plt)
5136 + sizeof (*local_got_tls_masks));
4ce794b7 5137 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb 5138 if (local_got_ents == NULL)
e054468f 5139 return NULL;
411e1bfb
AM		 5140 elf_local_got_ents (abfd) = local_got_ents;
5141 }
5142
e054468f 5143 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
411e1bfb
AM		 5144 {
5145 struct got_entry *ent;
5146
5147 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 5148 if (ent->addend == r_addend
5149 && ent->owner == abfd
5150 && ent->tls_type == tls_type)
411e1bfb
AM		 5151 break;
5152 if (ent == NULL)
5153 {
5154 bfd_size_type amt = sizeof (*ent);
4ce794b7 5155 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5156 if (ent == NULL)
5157 return FALSE;
5158 ent->next = local_got_ents[r_symndx];
5159 ent->addend = r_addend;
e717da7e 5160 ent->owner = abfd;
411e1bfb 5161 ent->tls_type = tls_type;
927be08e 5162 ent->is_indirect = FALSE;
411e1bfb
AM		 5163 ent->got.refcount = 0;
5164 local_got_ents[r_symndx] = ent;
5165 }
5166 ent->got.refcount += 1;
5167 }
5168
e054468f 5169 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
f961d9dd 5170 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
e7b938ca 5171 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM		 5172
5173 return local_plt + r_symndx;
65f38f15
AM		 5174}
5175
411e1bfb 5176static bfd_boolean
e054468f 5177update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
1e2f5b6e 5178{
411e1bfb 5179 struct plt_entry *ent;
1e2f5b6e 5180
e054468f 5181 for (ent = *plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5182 if (ent->addend == addend)
5183 break;
5184 if (ent == NULL)
1e2f5b6e 5185 {
411e1bfb 5186 bfd_size_type amt = sizeof (*ent);
4ce794b7 5187 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5188 if (ent == NULL)
5189 return FALSE;
e054468f 5190 ent->next = *plist;
411e1bfb
AM		 5191 ent->addend = addend;
5192 ent->plt.refcount = 0;
e054468f 5193 *plist = ent;
1e2f5b6e 5194 }
411e1bfb 5195 ent->plt.refcount += 1;
b34976b6 5196 return TRUE;
1e2f5b6e
AM		 5197}
5198
e054468f
AM		 5199static bfd_boolean
5200is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5201{
5202 return (r_type == R_PPC64_REL24
5203 || r_type == R_PPC64_REL14
5204 || r_type == R_PPC64_REL14_BRTAKEN
5205 || r_type == R_PPC64_REL14_BRNTAKEN
5206 || r_type == R_PPC64_ADDR24
5207 || r_type == R_PPC64_ADDR14
5208 || r_type == R_PPC64_ADDR14_BRTAKEN
5209 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5210}
5211
5bd4f169 5212/* Look through the relocs for a section during the first phase, and
65f38f15 5213 calculate needed space in the global offset table, procedure
5d1634d7 5214 linkage table, and dynamic reloc sections. */
5bd4f169 5215
b34976b6 5216static bfd_boolean
4ce794b7
AM		 5217ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5218 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5219{
65f38f15 5220 struct ppc_link_hash_table *htab;
5bd4f169 5221 Elf_Internal_Shdr *symtab_hdr;
c7e2358a 5222 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 5223 const Elf_Internal_Rela *rel;
5224 const Elf_Internal_Rela *rel_end;
5bd4f169 5225 asection *sreloc;
1e2f5b6e 5226 asection **opd_sym_map;
3a71aa26 5227 struct elf_link_hash_entry *tga, *dottga;
5bd4f169 5228
0e1862bb 5229 if (bfd_link_relocatable (info))
b34976b6 5230 return TRUE;
5bd4f169 5231
680a3378
AM		 5232 /* Don't do anything special with non-loaded, non-alloced sections.
5233 In particular, any relocs in such sections should not affect GOT
5234 and PLT reference counting (ie. we don't allow them to create GOT
5235 or PLT entries), there's no possibility or desire to optimize TLS
5236 relocs, and there's not much point in propagating relocs to shared
5237 libs that the dynamic linker won't relocate. */
5238 if ((sec->flags & SEC_ALLOC) == 0)
5239 return TRUE;
5240
0c8d6e5c 5241 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 5242
65f38f15 5243 htab = ppc_hash_table (info);
4dfe6ac6
NC		 5244 if (htab == NULL)
5245 return FALSE;
5246
3a71aa26
AM		 5247 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5248 FALSE, FALSE, TRUE);
5249 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5250 FALSE, FALSE, TRUE);
0ffa91dd 5251 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5252 sym_hashes = elf_sym_hashes (abfd);
5bd4f169 5253 sreloc = NULL;
1e2f5b6e 5254 opd_sym_map = NULL;
f6c7c3e8
AM		 5255 if (ppc64_elf_section_data (sec) != NULL
5256 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5257 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5bd4f169
AM		 5258
5259 rel_end = relocs + sec->reloc_count;
5260 for (rel = relocs; rel < rel_end; rel++)
5261 {
5262 unsigned long r_symndx;
5263 struct elf_link_hash_entry *h;
04c9666a 5264 enum elf_ppc64_reloc_type r_type;
727fc41e 5265 int tls_type;
7c8fe5c4 5266 struct _ppc64_elf_section_data *ppc64_sec;
e054468f 5267 struct plt_entry **ifunc;
5bd4f169
AM		 5268
5269 r_symndx = ELF64_R_SYM (rel->r_info);
5270 if (r_symndx < symtab_hdr->sh_info)
5271 h = NULL;
5272 else
973a3492
L		 5273 {
5274 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 5275 h = elf_follow_link (h);
81fbe831
AM		 5276
5277 /* PR15323, ref flags aren't set for references in the same
5278 object. */
5279 h->root.non_ir_ref = 1;
1c865ab2
AM		 5280
5281 if (h == htab->elf.hgot)
5282 sec->has_toc_reloc = 1;
973a3492 5283 }
5bd4f169 5284
727fc41e 5285 tls_type = 0;
e054468f 5286 ifunc = NULL;
25f23106
AM		 5287 if (h != NULL)
5288 {
5289 if (h->type == STT_GNU_IFUNC)
5290 {
5291 h->needs_plt = 1;
5292 ifunc = &h->plt.plist;
5293 }
5294 }
5295 else
5296 {
5297 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5298 abfd, r_symndx);
5299 if (isym == NULL)
5300 return FALSE;
5301
5302 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5303 {
5304 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5305 rel->r_addend, PLT_IFUNC);
5306 if (ifunc == NULL)
5307 return FALSE;
5308 }
5309 }
4ce794b7 5310 r_type = ELF64_R_TYPE (rel->r_info);
e054468f
AM		 5311 if (is_branch_reloc (r_type))
5312 {
5313 if (h != NULL && (h == tga || h == dottga))
5314 {
5315 if (rel != relocs
5316 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5317 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5318 /* We have a new-style __tls_get_addr call with a marker
5319 reloc. */
5320 ;
5321 else
5322 /* Mark this section as having an old-style call. */
5323 sec->has_tls_get_addr_call = 1;
5324 }
727fc41e 5325
e054468f 5326 /* STT_GNU_IFUNC symbols must have a PLT entry. */
e054468f
AM		 5327 if (ifunc != NULL
5328 && !update_plt_info (abfd, ifunc, rel->r_addend))
5329 return FALSE;
5330 }
727fc41e 5331
a33d1f77 5332 switch (r_type)
5bd4f169 5333 {
727fc41e
AM		 5334 case R_PPC64_TLSGD:
5335 case R_PPC64_TLSLD:
5336 /* These special tls relocs tie a call to __tls_get_addr with
5337 its parameter symbol. */
5338 break;
5339
411e1bfb
AM		 5340 case R_PPC64_GOT_TLSLD16:
5341 case R_PPC64_GOT_TLSLD16_LO:
5342 case R_PPC64_GOT_TLSLD16_HI:
5343 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5344 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5345 goto dogottls;
5346
5347 case R_PPC64_GOT_TLSGD16:
5348 case R_PPC64_GOT_TLSGD16_LO:
5349 case R_PPC64_GOT_TLSGD16_HI:
5350 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5351 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5352 goto dogottls;
5353
5354 case R_PPC64_GOT_TPREL16_DS:
5355 case R_PPC64_GOT_TPREL16_LO_DS:
5356 case R_PPC64_GOT_TPREL16_HI:
5357 case R_PPC64_GOT_TPREL16_HA:
0e1862bb 5358 if (bfd_link_pic (info))
411e1bfb
AM		 5359 info->flags |= DF_STATIC_TLS;
5360 tls_type = TLS_TLS | TLS_TPREL;
5361 goto dogottls;
5362
5363 case R_PPC64_GOT_DTPREL16_DS:
5364 case R_PPC64_GOT_DTPREL16_LO_DS:
5365 case R_PPC64_GOT_DTPREL16_HI:
5366 case R_PPC64_GOT_DTPREL16_HA:
5367 tls_type = TLS_TLS | TLS_DTPREL;
5368 dogottls:
5369 sec->has_tls_reloc = 1;
5370 /* Fall thru */
5371
5bd4f169 5372 case R_PPC64_GOT16:
5bd4f169 5373 case R_PPC64_GOT16_DS:
65f38f15
AM		 5374 case R_PPC64_GOT16_HA:
5375 case R_PPC64_GOT16_HI:
5376 case R_PPC64_GOT16_LO:
5bd4f169 5377 case R_PPC64_GOT16_LO_DS:
65f38f15 5378 /* This symbol requires a global offset table entry. */
4c52953f 5379 sec->has_toc_reloc = 1;
33c0ec9d
AM		 5380 if (r_type == R_PPC64_GOT_TLSLD16
5381 || r_type == R_PPC64_GOT_TLSGD16
5382 || r_type == R_PPC64_GOT_TPREL16_DS
5383 || r_type == R_PPC64_GOT_DTPREL16_DS
5384 || r_type == R_PPC64_GOT16
5385 || r_type == R_PPC64_GOT16_DS)
5386 {
5387 htab->do_multi_toc = 1;
d77c8a4b 5388 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
33c0ec9d
AM		 5389 }
5390
e717da7e
AM		 5391 if (ppc64_elf_tdata (abfd)->got == NULL
5392 && !create_got_section (abfd, info))
b34976b6 5393 return FALSE;
5bd4f169
AM		 5394
5395 if (h != NULL)
5396 {
411e1bfb
AM		 5397 struct ppc_link_hash_entry *eh;
5398 struct got_entry *ent;
65f38f15 5399
411e1bfb
AM		 5400 eh = (struct ppc_link_hash_entry *) h;
5401 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5402 if (ent->addend == rel->r_addend
e717da7e 5403 && ent->owner == abfd
411e1bfb
AM		 5404 && ent->tls_type == tls_type)
5405 break;
5406 if (ent == NULL)
5bd4f169 5407 {
411e1bfb 5408 bfd_size_type amt = sizeof (*ent);
4ce794b7 5409 ent = bfd_alloc (abfd, amt);
411e1bfb 5410 if (ent == NULL)
b34976b6 5411 return FALSE;
411e1bfb
AM		 5412 ent->next = eh->elf.got.glist;
5413 ent->addend = rel->r_addend;
e717da7e 5414 ent->owner = abfd;
411e1bfb 5415 ent->tls_type = tls_type;
927be08e 5416 ent->is_indirect = FALSE;
411e1bfb
AM		 5417 ent->got.refcount = 0;
5418 eh->elf.got.glist = ent;
5bd4f169 5419 }
411e1bfb 5420 ent->got.refcount += 1;
e7b938ca 5421 eh->tls_mask |= tls_type;
5bd4f169 5422 }
411e1bfb
AM		 5423 else
5424 /* This is a global offset table entry for a local symbol. */
5425 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5426 rel->r_addend, tls_type))
5427 return FALSE;
a345bc8d
AM		 5428
5429 /* We may also need a plt entry if the symbol turns out to be
5430 an ifunc. */
0e1862bb 5431 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
a345bc8d
AM		 5432 {
5433 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5434 return FALSE;
5435 }
5bd4f169
AM		 5436 break;
5437
5bd4f169 5438 case R_PPC64_PLT16_HA:
65f38f15
AM		 5439 case R_PPC64_PLT16_HI:
5440 case R_PPC64_PLT16_LO:
5441 case R_PPC64_PLT32:
5442 case R_PPC64_PLT64:
5bd4f169 5443 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 5444 actually build the entry in adjust_dynamic_symbol,
5445 because this might be a case of linking PIC code without
5446 linking in any dynamic objects, in which case we don't
5447 need to generate a procedure linkage table after all. */
5bd4f169
AM		 5448 if (h == NULL)
5449 {
5450 /* It does not make sense to have a procedure linkage
3fad3c7c 5451 table entry for a local symbol. */
5bd4f169 5452 bfd_set_error (bfd_error_bad_value);
b34976b6 5453 return FALSE;
5bd4f169 5454 }
411e1bfb 5455 else
e054468f
AM		 5456 {
5457 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5458 return FALSE;
5459 h->needs_plt = 1;
5460 if (h->root.root.string[0] == '.'
5461 && h->root.root.string[1] != '\0')
5462 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5463 }
5bd4f169
AM		 5464 break;
5465
5466 /* The following relocations don't need to propagate the
5467 relocation if linking a shared object since they are
5468 section relative. */
5469 case R_PPC64_SECTOFF:
5470 case R_PPC64_SECTOFF_LO:
5471 case R_PPC64_SECTOFF_HI:
5472 case R_PPC64_SECTOFF_HA:
5473 case R_PPC64_SECTOFF_DS:
5474 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 5475 case R_PPC64_DTPREL16:
5476 case R_PPC64_DTPREL16_LO:
5477 case R_PPC64_DTPREL16_HI:
5478 case R_PPC64_DTPREL16_HA:
5479 case R_PPC64_DTPREL16_DS:
5480 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 5481 case R_PPC64_DTPREL16_HIGH:
5482 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 5483 case R_PPC64_DTPREL16_HIGHER:
5484 case R_PPC64_DTPREL16_HIGHERA:
5485 case R_PPC64_DTPREL16_HIGHEST:
5486 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 5487 break;
5488
ad8e1ba5 5489 /* Nor do these. */
25f23106
AM		 5490 case R_PPC64_REL16:
5491 case R_PPC64_REL16_LO:
5492 case R_PPC64_REL16_HI:
5493 case R_PPC64_REL16_HA:
5494 break;
5495
45965137
AM		 5496 /* Not supported as a dynamic relocation. */
5497 case R_PPC64_ADDR64_LOCAL:
0e1862bb 5498 if (bfd_link_pic (info))
45965137
AM		 5499 {
5500 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5501 ppc_howto_init ();
5502 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5503 "in shared libraries and PIEs.\n"),
5504 abfd, sec, rel->r_offset,
5505 ppc64_elf_howto_table[r_type]->name);
5506 bfd_set_error (bfd_error_bad_value);
5507 return FALSE;
5508 }
5509 break;
5510
ad8e1ba5 5511 case R_PPC64_TOC16:
33c0ec9d
AM		 5512 case R_PPC64_TOC16_DS:
5513 htab->do_multi_toc = 1;
d77c8a4b 5514 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
ad8e1ba5
AM		 5515 case R_PPC64_TOC16_LO:
5516 case R_PPC64_TOC16_HI:
5517 case R_PPC64_TOC16_HA:
ad8e1ba5 5518 case R_PPC64_TOC16_LO_DS:
4c52953f 5519 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 5520 break;
5521
5bd4f169
AM		 5522 /* This relocation describes the C++ object vtable hierarchy.
5523 Reconstruct it for later use during GC. */
5524 case R_PPC64_GNU_VTINHERIT:
c152c796 5525 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5526 return FALSE;
5bd4f169
AM		 5527 break;
5528
5529 /* This relocation describes which C++ vtable entries are actually
5530 used. Record for later use during GC. */
5531 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB		 5532 BFD_ASSERT (h != NULL);
5533 if (h != NULL
5534 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 5535 return FALSE;
5bd4f169
AM		 5536 break;
5537
721956f4
AM		 5538 case R_PPC64_REL14:
5539 case R_PPC64_REL14_BRTAKEN:
5540 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 5541 {
5542 asection *dest = NULL;
5543
5544 /* Heuristic: If jumping outside our section, chances are
5545 we are going to need a stub. */
5546 if (h != NULL)
5547 {
5548 /* If the sym is weak it may be overridden later, so
5549 don't assume we know where a weak sym lives. */
5550 if (h->root.type == bfd_link_hash_defined)
5551 dest = h->root.u.def.section;
5552 }
5553 else
87d72d41
AM		 5554 {
5555 Elf_Internal_Sym *isym;
5556
5557 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5558 abfd, r_symndx);
5559 if (isym == NULL)
5560 return FALSE;
5561
5562 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5563 }
5564
220c76dd 5565 if (dest != sec)
7c8fe5c4 5566 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 5567 }
721956f4
AM		 5568 /* Fall through. */
5569
5d1634d7 5570 case R_PPC64_REL24:
e054468f 5571 if (h != NULL && ifunc == NULL)
5d1634d7
AM		 5572 {
5573 /* We may need a .plt entry if the function this reloc
5574 refers to is in a shared lib. */
e054468f 5575 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
411e1bfb 5576 return FALSE;
e054468f
AM		 5577 h->needs_plt = 1;
5578 if (h->root.root.string[0] == '.'
5579 && h->root.root.string[1] != '\0')
5580 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3a71aa26 5581 if (h == tga || h == dottga)
411e1bfb 5582 sec->has_tls_reloc = 1;
411e1bfb
AM		 5583 }
5584 break;
5585
5586 case R_PPC64_TPREL64:
5587 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
0e1862bb 5588 if (bfd_link_pic (info))
411e1bfb
AM		 5589 info->flags |= DF_STATIC_TLS;
5590 goto dotlstoc;
5591
5592 case R_PPC64_DTPMOD64:
5593 if (rel + 1 < rel_end
5594 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5595 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 5596 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 5597 else
951fd09b 5598 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 5599 goto dotlstoc;
5600
5601 case R_PPC64_DTPREL64:
5602 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5603 if (rel != relocs
5604 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5605 && rel[-1].r_offset == rel->r_offset - 8)
5606 /* This is the second reloc of a dtpmod, dtprel pair.
5607 Don't mark with TLS_DTPREL. */
5608 goto dodyn;
5609
5610 dotlstoc:
5611 sec->has_tls_reloc = 1;
5612 if (h != NULL)
5613 {
5614 struct ppc_link_hash_entry *eh;
5615 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5616 eh->tls_mask |= tls_type;
411e1bfb
AM		 5617 }
5618 else
5619 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5620 rel->r_addend, tls_type))
5621 return FALSE;
5622
7c8fe5c4
AM		 5623 ppc64_sec = ppc64_elf_section_data (sec);
5624 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 5625 {
3a71aa26
AM		 5626 bfd_size_type amt;
5627
e7b938ca 5628 /* One extra to simplify get_tls_mask. */
3a71aa26
AM		 5629 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5630 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5631 if (ppc64_sec->u.toc.symndx == NULL)
5632 return FALSE;
5633 amt = sec->size * sizeof (bfd_vma) / 8;
5634 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5635 if (ppc64_sec->u.toc.add == NULL)
411e1bfb 5636 return FALSE;
7c8fe5c4
AM		 5637 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5638 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 5639 }
5640 BFD_ASSERT (rel->r_offset % 8 == 0);
3a71aa26
AM		 5641 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5642 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
951fd09b
AM		 5643
5644 /* Mark the second slot of a GD or LD entry.
5645 -1 to indicate GD and -2 to indicate LD. */
5646 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3a71aa26 5647 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 5648 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3a71aa26 5649 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 5650 goto dodyn;
5651
5652 case R_PPC64_TPREL16:
5653 case R_PPC64_TPREL16_LO:
5654 case R_PPC64_TPREL16_HI:
5655 case R_PPC64_TPREL16_HA:
5656 case R_PPC64_TPREL16_DS:
5657 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 5658 case R_PPC64_TPREL16_HIGH:
5659 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 5660 case R_PPC64_TPREL16_HIGHER:
5661 case R_PPC64_TPREL16_HIGHERA:
5662 case R_PPC64_TPREL16_HIGHEST:
5663 case R_PPC64_TPREL16_HIGHESTA:
0e1862bb 5664 if (bfd_link_pic (info))
411e1bfb 5665 {
afb93314 5666 info->flags |= DF_STATIC_TLS;
411e1bfb 5667 goto dodyn;
5d1634d7
AM		 5668 }
5669 break;
5670
e86ce104 5671 case R_PPC64_ADDR64:
1e2f5b6e 5672 if (opd_sym_map != NULL
1e2f5b6e 5673 && rel + 1 < rel_end
4ce794b7 5674 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 5675 {
8387904d
AM		 5676 if (h != NULL)
5677 {
5678 if (h->root.root.string[0] == '.'
5679 && h->root.root.string[1] != 0
b31867b6 5680 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
8387904d
AM		 5681 ;
5682 else
5683 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5684 }
5685 else
5686 {
5687 asection *s;
87d72d41 5688 Elf_Internal_Sym *isym;
1e2f5b6e 5689
87d72d41
AM		 5690 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5691 abfd, r_symndx);
5692 if (isym == NULL)
8387904d 5693 return FALSE;
87d72d41
AM		 5694
5695 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5696 if (s != NULL && s != sec)
51aecdc5 5697 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
8387904d 5698 }
1e2f5b6e 5699 }
e86ce104
AM		 5700 /* Fall through. */
5701
65f38f15
AM		 5702 case R_PPC64_ADDR16:
5703 case R_PPC64_ADDR16_DS:
5704 case R_PPC64_ADDR16_HA:
5705 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 5706 case R_PPC64_ADDR16_HIGH:
5707 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 5708 case R_PPC64_ADDR16_HIGHER:
5709 case R_PPC64_ADDR16_HIGHERA:
5710 case R_PPC64_ADDR16_HIGHEST:
5711 case R_PPC64_ADDR16_HIGHESTA:
5712 case R_PPC64_ADDR16_LO:
5713 case R_PPC64_ADDR16_LO_DS:
0e1862bb 5714 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
a345bc8d
AM		 5715 && rel->r_addend == 0)
5716 {
5717 /* We may need a .plt entry if this reloc refers to a
5718 function in a shared lib. */
5719 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5720 return FALSE;
5721 h->pointer_equality_needed = 1;
5722 }
5723 /* Fall through. */
5724
5725 case R_PPC64_REL30:
5726 case R_PPC64_REL32:
5727 case R_PPC64_REL64:
5728 case R_PPC64_ADDR14:
5729 case R_PPC64_ADDR14_BRNTAKEN:
5730 case R_PPC64_ADDR14_BRTAKEN:
65f38f15 5731 case R_PPC64_ADDR24:
65f38f15 5732 case R_PPC64_ADDR32:
65f38f15
AM		 5733 case R_PPC64_UADDR16:
5734 case R_PPC64_UADDR32:
5735 case R_PPC64_UADDR64:
5bd4f169 5736 case R_PPC64_TOC:
0e1862bb 5737 if (h != NULL && !bfd_link_pic (info))
81848ca0 5738 /* We may need a copy reloc. */
f5385ebf 5739 h->non_got_ref = 1;
81848ca0 5740
41bd81ab 5741 /* Don't propagate .opd relocs. */
1e2f5b6e 5742 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 5743 break;
e86ce104 5744
65f38f15
AM		 5745 /* If we are creating a shared library, and this is a reloc
5746 against a global symbol, or a non PC relative reloc
5747 against a local symbol, then we need to copy the reloc
5748 into the shared library. However, if we are linking with
5749 -Bsymbolic, we do not need to copy a reloc against a
5750 global symbol which is defined in an object we are
5751 including in the link (i.e., DEF_REGULAR is set). At
5752 this point we have not seen all the input files, so it is
5753 possible that DEF_REGULAR is not set now but will be set
5754 later (it is never cleared). In case of a weak definition,
5755 DEF_REGULAR may be cleared later by a strong definition in
5756 a shared library. We account for that possibility below by
f4656909 5757 storing information in the dyn_relocs field of the hash
65f38f15
AM		 5758 table entry. A similar situation occurs when creating
5759 shared libraries and symbol visibility changes render the
5760 symbol local.
5761
5762 If on the other hand, we are creating an executable, we
5763 may need to keep relocations for symbols satisfied by a
5764 dynamic library if we manage to avoid copy relocs for the
5765 symbol. */
411e1bfb 5766 dodyn:
0e1862bb 5767 if ((bfd_link_pic (info)
1d483afe 5768 && (must_be_dyn_reloc (info, r_type)
65f38f15 5769 || (h != NULL
198f1157 5770 && (!SYMBOLIC_BIND (info, h)
65f38f15 5771 || h->root.type == bfd_link_hash_defweak
f5385ebf 5772 || !h->def_regular))))
f4656909 5773 || (ELIMINATE_COPY_RELOCS
0e1862bb 5774 && !bfd_link_pic (info)
65f38f15
AM		 5775 && h != NULL
5776 && (h->root.type == bfd_link_hash_defweak
25f23106 5777 || !h->def_regular))
0e1862bb 5778 || (!bfd_link_pic (info)
25f23106 5779 && ifunc != NULL))
5bd4f169 5780 {
65f38f15
AM		 5781 /* We must copy these reloc types into the output file.
5782 Create a reloc section in dynobj and make room for
5783 this reloc. */
5bd4f169
AM		 5784 if (sreloc == NULL)
5785 {
83bac4b0
NC		 5786 sreloc = _bfd_elf_make_dynamic_reloc_section
5787 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5788
5bd4f169 5789 if (sreloc == NULL)
83bac4b0 5790 return FALSE;
5bd4f169
AM		 5791 }
5792
65f38f15
AM		 5793 /* If this is a global symbol, we count the number of
5794 relocations we need for this symbol. */
5795 if (h != NULL)
5796 {
19e08130
AM		 5797 struct elf_dyn_relocs *p;
5798 struct elf_dyn_relocs **head;
5799
ec338859 5800 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
19e08130
AM		 5801 p = *head;
5802 if (p == NULL || p->sec != sec)
5803 {
5804 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5805 if (p == NULL)
5806 return FALSE;
5807 p->next = *head;
5808 *head = p;
5809 p->sec = sec;
5810 p->count = 0;
5811 p->pc_count = 0;
5812 }
5813 p->count += 1;
5814 if (!must_be_dyn_reloc (info, r_type))
5815 p->pc_count += 1;
65f38f15
AM		 5816 }
5817 else
5818 {
ec338859
AM		 5819 /* Track dynamic relocs needed for local syms too.
5820 We really need local syms available to do this
5821 easily. Oh well. */
19e08130
AM		 5822 struct ppc_dyn_relocs *p;
5823 struct ppc_dyn_relocs **head;
5824 bfd_boolean is_ifunc;
ec338859 5825 asection *s;
6edfbbad 5826 void *vpp;
87d72d41 5827 Elf_Internal_Sym *isym;
6edfbbad 5828
87d72d41
AM		 5829 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5830 abfd, r_symndx);
5831 if (isym == NULL)
b34976b6 5832 return FALSE;
ec338859 5833
87d72d41
AM		 5834 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5835 if (s == NULL)
5836 s = sec;
5837
6edfbbad 5838 vpp = &elf_section_data (s)->local_dynrel;
19e08130
AM		 5839 head = (struct ppc_dyn_relocs **) vpp;
5840 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5841 p = *head;
5842 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5843 p = p->next;
5844 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5845 {
5846 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5847 if (p == NULL)
5848 return FALSE;
5849 p->next = *head;
5850 *head = p;
5851 p->sec = sec;
5852 p->ifunc = is_ifunc;
5853 p->count = 0;
5854 }
5855 p->count += 1;
ec338859 5856 }
65f38f15 5857 }
5bd4f169 5858 break;
65f38f15
AM		 5859
5860 default:
96e0dda4 5861 break;
5bd4f169
AM		 5862 }
5863 }
5864
b34976b6 5865 return TRUE;
5bd4f169
AM		 5866}
5867
ee67d69a
AM		 5868/* Merge backend specific data from an object file to the output
5869 object file when linking. */
5870
5871static bfd_boolean
5872ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5873{
5874 unsigned long iflags, oflags;
5875
5876 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5877 return TRUE;
5878
5879 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5880 return TRUE;
5881
5882 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5883 return FALSE;
5884
5885 iflags = elf_elfheader (ibfd)->e_flags;
5886 oflags = elf_elfheader (obfd)->e_flags;
5887
f6c7c3e8 5888 if (iflags & ~EF_PPC64_ABI)
ee67d69a
AM		 5889 {
5890 (*_bfd_error_handler)
5891 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5892 bfd_set_error (bfd_error_bad_value);
5893 return FALSE;
5894 }
f6c7c3e8 5895 else if (iflags != oflags && iflags != 0)
ee67d69a
AM		 5896 {
5897 (*_bfd_error_handler)
5898 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5899 ibfd, iflags, oflags);
5900 bfd_set_error (bfd_error_bad_value);
5901 return FALSE;
5902 }
5903
5904 /* Merge Tag_compatibility attributes and any common GNU ones. */
5905 _bfd_elf_merge_object_attributes (ibfd, obfd);
5906
5907 return TRUE;
5908}
5909
5910static bfd_boolean
5911ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5912{
5913 /* Print normal ELF private data. */
5914 _bfd_elf_print_private_bfd_data (abfd, ptr);
5915
5916 if (elf_elfheader (abfd)->e_flags != 0)
5917 {
5918 FILE *file = ptr;
5919
5920 /* xgettext:c-format */
5921 fprintf (file, _("private flags = 0x%lx:"),
5922 elf_elfheader (abfd)->e_flags);
5923
5924 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5925 fprintf (file, _(" [abiv%ld]"),
5926 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5927 fputc ('\n', file);
5928 }
5929
5930 return TRUE;
5931}
5932
8387904d 5933/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
b53dfeb2
AM		 5934 of the code entry point, and its section, which must be in the same
5935 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
8387904d
AM		 5936
5937static bfd_vma
5938opd_entry_value (asection *opd_sec,
5939 bfd_vma offset,
5940 asection **code_sec,
aef36ac1
AM		 5941 bfd_vma *code_off,
5942 bfd_boolean in_code_sec)
8387904d
AM		 5943{
5944 bfd *opd_bfd = opd_sec->owner;
8860955f 5945 Elf_Internal_Rela *relocs;
8387904d 5946 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5947 bfd_vma val;
8387904d 5948
9f296da3
AM		 5949 /* No relocs implies we are linking a --just-symbols object, or looking
5950 at a final linked executable with addr2line or somesuch. */
4b85d634
AM		 5951 if (opd_sec->reloc_count == 0)
5952 {
729eabd5 5953 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
3b36f7e6 5954
729eabd5
AM		 5955 if (contents == NULL)
5956 {
5957 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5958 return (bfd_vma) -1;
5959 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5960 }
ee1e4ede 5961
dbb3fbbb 5962 /* PR 17512: file: 64b9dfbb. */
451dfd38 5963 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
dbb3fbbb
NC		 5964 return (bfd_vma) -1;
5965
729eabd5 5966 val = bfd_get_64 (opd_bfd, contents + offset);
aef36ac1
AM		 5967 if (code_sec != NULL)
5968 {
5969 asection *sec, *likely = NULL;
ee1e4ede 5970
aef36ac1 5971 if (in_code_sec)
4b85d634 5972 {
aef36ac1
AM		 5973 sec = *code_sec;
5974 if (sec->vma <= val
5975 && val < sec->vma + sec->size)
5976 likely = sec;
5977 else
5978 val = -1;
5979 }
5980 else
5981 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5982 if (sec->vma <= val
5983 && (sec->flags & SEC_LOAD) != 0
5984 && (sec->flags & SEC_ALLOC) != 0)
5985 likely = sec;
5986 if (likely != NULL)
5987 {
5988 *code_sec = likely;
5989 if (code_off != NULL)
5990 *code_off = val - likely->vma;
4b85d634
AM		 5991 }
5992 }
aef36ac1 5993 return val;
4b85d634
AM		 5994 }
5995
0c8d6e5c 5996 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5997
729eabd5 5998 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
8860955f
AM		 5999 if (relocs == NULL)
6000 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
877a8638
NC		 6001 /* PR 17512: file: df8e1fd6. */
6002 if (relocs == NULL)
6003 return (bfd_vma) -1;
645ea6a9 6004
8387904d 6005 /* Go find the opd reloc at the sym address. */
8860955f 6006 lo = relocs;
8387904d 6007 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 6008 val = (bfd_vma) -1;
8387904d
AM		 6009 while (lo < hi)
6010 {
6011 look = lo + (hi - lo) / 2;
6012 if (look->r_offset < offset)
6013 lo = look + 1;
6014 else if (look->r_offset > offset)
6015 hi = look;
6016 else
6017 {
0ffa91dd
NC		 6018 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6019
8387904d
AM		 6020 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6021 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6022 {
6023 unsigned long symndx = ELF64_R_SYM (look->r_info);
b53dfeb2 6024 asection *sec = NULL;
8387904d 6025
b53dfeb2
AM		 6026 if (symndx >= symtab_hdr->sh_info
6027 && elf_sym_hashes (opd_bfd) != NULL)
8387904d
AM		 6028 {
6029 struct elf_link_hash_entry **sym_hashes;
6030 struct elf_link_hash_entry *rh;
6031
6032 sym_hashes = elf_sym_hashes (opd_bfd);
6033 rh = sym_hashes[symndx - symtab_hdr->sh_info];
128205bb
AM		 6034 if (rh != NULL)
6035 {
6036 rh = elf_follow_link (rh);
bb854a36
AM		 6037 if (rh->root.type != bfd_link_hash_defined
6038 && rh->root.type != bfd_link_hash_defweak)
6039 break;
6040 if (rh->root.u.def.section->owner == opd_bfd)
b53dfeb2 6041 {
bb854a36
AM		 6042 val = rh->root.u.def.value;
6043 sec = rh->root.u.def.section;
b53dfeb2
AM		 6044 }
6045 }
6046 }
6047
6048 if (sec == NULL)
6049 {
6050 Elf_Internal_Sym *sym;
6051
6052 if (symndx < symtab_hdr->sh_info)
6053 {
6054 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6055 if (sym == NULL)
6056 {
6057 size_t symcnt = symtab_hdr->sh_info;
6058 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6059 symcnt, 0,
6060 NULL, NULL, NULL);
6061 if (sym == NULL)
6062 break;
6063 symtab_hdr->contents = (bfd_byte *) sym;
6064 }
6065 sym += symndx;
128205bb
AM		 6066 }
6067 else
6068 {
b53dfeb2
AM		 6069 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6070 1, symndx,
6071 NULL, NULL, NULL);
128205bb
AM		 6072 if (sym == NULL)
6073 break;
128205bb 6074 }
b53dfeb2
AM		 6075 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6076 if (sec == NULL)
6077 break;
6078 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6079 val = sym->st_value;
8387904d 6080 }
b53dfeb2 6081
8387904d
AM		 6082 val += look->r_addend;
6083 if (code_off != NULL)
6084 *code_off = val;
6085 if (code_sec != NULL)
aef36ac1
AM		 6086 {
6087 if (in_code_sec && *code_sec != sec)
6088 return -1;
6089 else
6090 *code_sec = sec;
6091 }
b53dfeb2 6092 if (sec->output_section != NULL)
8387904d 6093 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 6094 }
6095 break;
6096 }
6097 }
645ea6a9 6098
645ea6a9 6099 return val;
8387904d
AM		 6100}
6101
aef36ac1
AM		 6102/* If the ELF symbol SYM might be a function in SEC, return the
6103 function size and set *CODE_OFF to the function's entry point,
6104 otherwise return zero. */
9f296da3 6105
aef36ac1
AM		 6106static bfd_size_type
6107ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6108 bfd_vma *code_off)
9f296da3 6109{
aef36ac1
AM		 6110 bfd_size_type size;
6111
6112 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6113 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6114 return 0;
6115
6116 size = 0;
6117 if (!(sym->flags & BSF_SYNTHETIC))
6118 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6119
6120 if (strcmp (sym->section->name, ".opd") == 0)
9f296da3 6121 {
aef36ac1
AM		 6122 if (opd_entry_value (sym->section, sym->value,
6123 &sec, code_off, TRUE) == (bfd_vma) -1)
6124 return 0;
6125 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6126 symbol. This size has nothing to do with the code size of the
6127 function, which is what we're supposed to return, but the
6128 code size isn't available without looking up the dot-sym.
6129 However, doing that would be a waste of time particularly
6130 since elf_find_function will look at the dot-sym anyway.
6131 Now, elf_find_function will keep the largest size of any
6132 function sym found at the code address of interest, so return
6133 1 here to avoid it incorrectly caching a larger function size
6134 for a small function. This does mean we return the wrong
6135 size for a new-ABI function of size 24, but all that does is
6136 disable caching for such functions. */
6137 if (size == 24)
6138 size = 1;
9f296da3 6139 }
aef36ac1
AM		 6140 else
6141 {
6142 if (sym->section != sec)
6143 return 0;
6144 *code_off = sym->value;
6145 }
6146 if (size == 0)
6147 size = 1;
6148 return size;
9f296da3
AM		 6149}
6150
854b41e7
AM		 6151/* Return true if symbol is defined in a regular object file. */
6152
6153static bfd_boolean
6154is_static_defined (struct elf_link_hash_entry *h)
6155{
6156 return ((h->root.type == bfd_link_hash_defined
6157 || h->root.type == bfd_link_hash_defweak)
6158 && h->root.u.def.section != NULL
6159 && h->root.u.def.section->output_section != NULL);
6160}
6161
b31867b6
AM		 6162/* If FDH is a function descriptor symbol, return the associated code
6163 entry symbol if it is defined. Return NULL otherwise. */
6164
6165static struct ppc_link_hash_entry *
6166defined_code_entry (struct ppc_link_hash_entry *fdh)
6167{
6168 if (fdh->is_func_descriptor)
6169 {
6170 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6171 if (fh->elf.root.type == bfd_link_hash_defined
6172 || fh->elf.root.type == bfd_link_hash_defweak)
6173 return fh;
6174 }
6175 return NULL;
6176}
6177
6178/* If FH is a function code entry symbol, return the associated
6179 function descriptor symbol if it is defined. Return NULL otherwise. */
6180
6181static struct ppc_link_hash_entry *
6182defined_func_desc (struct ppc_link_hash_entry *fh)
6183{
6184 if (fh->oh != NULL
6185 && fh->oh->is_func_descriptor)
6186 {
6187 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6188 if (fdh->elf.root.type == bfd_link_hash_defined
6189 || fdh->elf.root.type == bfd_link_hash_defweak)
6190 return fdh;
6191 }
6192 return NULL;
6193}
6194
74f0fb50
AM		 6195/* Mark all our entry sym sections, both opd and code section. */
6196
6197static void
6198ppc64_elf_gc_keep (struct bfd_link_info *info)
6199{
6200 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6201 struct bfd_sym_chain *sym;
6202
4dfe6ac6
NC		 6203 if (htab == NULL)
6204 return;
6205
74f0fb50
AM		 6206 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6207 {
b31867b6 6208 struct ppc_link_hash_entry *eh, *fh;
74f0fb50
AM		 6209 asection *sec;
6210
6211 eh = (struct ppc_link_hash_entry *)
b31867b6 6212 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
74f0fb50
AM		 6213 if (eh == NULL)
6214 continue;
6215 if (eh->elf.root.type != bfd_link_hash_defined
6216 && eh->elf.root.type != bfd_link_hash_defweak)
6217 continue;
6218
b31867b6
AM		 6219 fh = defined_code_entry (eh);
6220 if (fh != NULL)
74f0fb50 6221 {
b31867b6 6222 sec = fh->elf.root.u.def.section;
74f0fb50
AM		 6223 sec->flags |= SEC_KEEP;
6224 }
6225 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6226 && opd_entry_value (eh->elf.root.u.def.section,
6227 eh->elf.root.u.def.value,
aef36ac1 6228 &sec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50
AM		 6229 sec->flags |= SEC_KEEP;
6230
6231 sec = eh->elf.root.u.def.section;
6232 sec->flags |= SEC_KEEP;
6233 }
6234}
6235
64d03ab5
AM		 6236/* Mark sections containing dynamically referenced symbols. When
6237 building shared libraries, we must assume that any visible symbol is
6238 referenced. */
6239
6240static bfd_boolean
6241ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6242{
6243 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6244 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
b31867b6 6245 struct ppc_link_hash_entry *fdh;
b407645f 6246 struct bfd_elf_dynamic_list *d = info->dynamic_list;
64d03ab5 6247
64d03ab5 6248 /* Dynamic linking info is on the func descriptor sym. */
b31867b6
AM		 6249 fdh = defined_func_desc (eh);
6250 if (fdh != NULL)
6251 eh = fdh;
64d03ab5
AM		 6252
6253 if ((eh->elf.root.type == bfd_link_hash_defined
6254 || eh->elf.root.type == bfd_link_hash_defweak)
6255 && (eh->elf.ref_dynamic
1c9177d9 6256 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
64d03ab5 6257 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
4c58e0d8 6258 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
0e1862bb 6259 && (!bfd_link_executable (info)
b407645f
AM		 6260 || info->export_dynamic
6261 || (eh->elf.dynamic
6262 && d != NULL
6263 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
4c58e0d8
AM		 6264 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6265 || !bfd_hide_sym_by_version (info->version_info,
6266 eh->elf.root.root.string)))))
64d03ab5
AM		 6267 {
6268 asection *code_sec;
b31867b6 6269 struct ppc_link_hash_entry *fh;
64d03ab5
AM		 6270
6271 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6272
6273 /* Function descriptor syms cause the associated
6274 function code sym section to be marked. */
b31867b6
AM		 6275 fh = defined_code_entry (eh);
6276 if (fh != NULL)
6277 {
6278 code_sec = fh->elf.root.u.def.section;
6279 code_sec->flags |= SEC_KEEP;
6280 }
64d03ab5
AM		 6281 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6282 && opd_entry_value (eh->elf.root.u.def.section,
6283 eh->elf.root.u.def.value,
aef36ac1 6284 &code_sec, NULL, FALSE) != (bfd_vma) -1)
64d03ab5
AM		 6285 code_sec->flags |= SEC_KEEP;
6286 }
6287
6288 return TRUE;
6289}
6290
5bd4f169
AM		 6291/* Return the section that should be marked against GC for a given
6292 relocation. */
6293
6294static asection *
4ce794b7 6295ppc64_elf_gc_mark_hook (asection *sec,
fb34365b 6296 struct bfd_link_info *info,
4ce794b7
AM		 6297 Elf_Internal_Rela *rel,
6298 struct elf_link_hash_entry *h,
6299 Elf_Internal_Sym *sym)
5bd4f169 6300{
ccfa59ea
AM		 6301 asection *rsec;
6302
ccfa59ea
AM		 6303 /* Syms return NULL if we're marking .opd, so we avoid marking all
6304 function sections, as all functions are referenced in .opd. */
6305 rsec = NULL;
6306 if (get_opd_info (sec) != NULL)
6307 return rsec;
1e2f5b6e 6308
5bd4f169
AM		 6309 if (h != NULL)
6310 {
04c9666a 6311 enum elf_ppc64_reloc_type r_type;
b31867b6 6312 struct ppc_link_hash_entry *eh, *fh, *fdh;
a33d1f77 6313
4ce794b7 6314 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 6315 switch (r_type)
5bd4f169
AM		 6316 {
6317 case R_PPC64_GNU_VTINHERIT:
6318 case R_PPC64_GNU_VTENTRY:
6319 break;
6320
6321 default:
6322 switch (h->root.type)
6323 {
6324 case bfd_link_hash_defined:
6325 case bfd_link_hash_defweak:
ccfa59ea 6326 eh = (struct ppc_link_hash_entry *) h;
b31867b6
AM		 6327 fdh = defined_func_desc (eh);
6328 if (fdh != NULL)
6329 eh = fdh;
1e2f5b6e
AM		 6330
6331 /* Function descriptor syms cause the associated
6332 function code sym section to be marked. */
b31867b6
AM		 6333 fh = defined_code_entry (eh);
6334 if (fh != NULL)
ccfa59ea
AM		 6335 {
6336 /* They also mark their opd section. */
74f0fb50 6337 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6338
b31867b6 6339 rsec = fh->elf.root.u.def.section;
ccfa59ea 6340 }
8387904d
AM		 6341 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6342 && opd_entry_value (eh->elf.root.u.def.section,
6343 eh->elf.root.u.def.value,
aef36ac1 6344 &rsec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50 6345 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6346 else
1e2f5b6e
AM		 6347 rsec = h->root.u.def.section;
6348 break;
5bd4f169
AM		 6349
6350 case bfd_link_hash_common:
1e2f5b6e
AM		 6351 rsec = h->root.u.c.p->section;
6352 break;
5bd4f169
AM		 6353
6354 default:
fb34365b 6355 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5bd4f169
AM		 6356 }
6357 }
6358 }
6359 else
6360 {
74f0fb50 6361 struct _opd_sec_data *opd;
1e2f5b6e
AM		 6362
6363 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM		 6364 opd = get_opd_info (rsec);
6365 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 6366 {
74f0fb50 6367 rsec->gc_mark = 1;
ccfa59ea 6368
51aecdc5 6369 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
ccfa59ea 6370 }
5bd4f169
AM		 6371 }
6372
1e2f5b6e 6373 return rsec;
5bd4f169
AM		 6374}
6375
65f38f15
AM		 6376/* Update the .got, .plt. and dynamic reloc reference counts for the
6377 section being removed. */
5bd4f169 6378
b34976b6 6379static bfd_boolean
4ce794b7
AM		 6380ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6381 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 6382{
411e1bfb 6383 struct ppc_link_hash_table *htab;
5bd4f169
AM		 6384 Elf_Internal_Shdr *symtab_hdr;
6385 struct elf_link_hash_entry **sym_hashes;
411e1bfb 6386 struct got_entry **local_got_ents;
5bd4f169 6387 const Elf_Internal_Rela *rel, *relend;
5bd4f169 6388
0e1862bb 6389 if (bfd_link_relocatable (info))
7dda2462
TG		 6390 return TRUE;
6391
680a3378
AM		 6392 if ((sec->flags & SEC_ALLOC) == 0)
6393 return TRUE;
6394
ec338859
AM		 6395 elf_section_data (sec)->local_dynrel = NULL;
6396
411e1bfb 6397 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6398 if (htab == NULL)
6399 return FALSE;
6400
0ffa91dd 6401 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 6402 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 6403 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 6404
6405 relend = relocs + sec->reloc_count;
6406 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 6407 {
6408 unsigned long r_symndx;
04c9666a 6409 enum elf_ppc64_reloc_type r_type;
58ac9f71 6410 struct elf_link_hash_entry *h = NULL;
f961d9dd 6411 unsigned char tls_type = 0;
5bd4f169 6412
a33d1f77 6413 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 6414 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 6415 if (r_symndx >= symtab_hdr->sh_info)
6416 {
6417 struct ppc_link_hash_entry *eh;
6061a67d
AM		 6418 struct elf_dyn_relocs **pp;
6419 struct elf_dyn_relocs *p;
58ac9f71
AM		 6420
6421 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 6422 h = elf_follow_link (h);
58ac9f71
AM		 6423 eh = (struct ppc_link_hash_entry *) h;
6424
6425 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6426 if (p->sec == sec)
6427 {
6428 /* Everything must go for SEC. */
6429 *pp = p->next;
6430 break;
6431 }
6432 }
6433
e054468f
AM		 6434 if (is_branch_reloc (r_type))
6435 {
6436 struct plt_entry **ifunc = NULL;
6437 if (h != NULL)
6438 {
6439 if (h->type == STT_GNU_IFUNC)
6440 ifunc = &h->plt.plist;
6441 }
6442 else if (local_got_ents != NULL)
6443 {
6444 struct plt_entry **local_plt = (struct plt_entry **)
6445 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 6446 unsigned char *local_got_tls_masks = (unsigned char *)
e054468f
AM		 6447 (local_plt + symtab_hdr->sh_info);
6448 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6449 ifunc = local_plt + r_symndx;
6450 }
6451 if (ifunc != NULL)
6452 {
6453 struct plt_entry *ent;
6454
6455 for (ent = *ifunc; ent != NULL; ent = ent->next)
6456 if (ent->addend == rel->r_addend)
6457 break;
6458 if (ent == NULL)
6459 abort ();
6460 if (ent->plt.refcount > 0)
6461 ent->plt.refcount -= 1;
6462 continue;
6463 }
6464 }
6465
a33d1f77
AM		 6466 switch (r_type)
6467 {
411e1bfb
AM		 6468 case R_PPC64_GOT_TLSLD16:
6469 case R_PPC64_GOT_TLSLD16_LO:
6470 case R_PPC64_GOT_TLSLD16_HI:
6471 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 6472 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6473 goto dogot;
6474
6475 case R_PPC64_GOT_TLSGD16:
6476 case R_PPC64_GOT_TLSGD16_LO:
6477 case R_PPC64_GOT_TLSGD16_HI:
6478 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6479 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6480 goto dogot;
6481
6482 case R_PPC64_GOT_TPREL16_DS:
6483 case R_PPC64_GOT_TPREL16_LO_DS:
6484 case R_PPC64_GOT_TPREL16_HI:
6485 case R_PPC64_GOT_TPREL16_HA:
6486 tls_type = TLS_TLS | TLS_TPREL;
6487 goto dogot;
6488
6489 case R_PPC64_GOT_DTPREL16_DS:
6490 case R_PPC64_GOT_DTPREL16_LO_DS:
6491 case R_PPC64_GOT_DTPREL16_HI:
6492 case R_PPC64_GOT_DTPREL16_HA:
6493 tls_type = TLS_TLS | TLS_DTPREL;
6494 goto dogot;
6495
a33d1f77
AM		 6496 case R_PPC64_GOT16:
6497 case R_PPC64_GOT16_DS:
6498 case R_PPC64_GOT16_HA:
6499 case R_PPC64_GOT16_HI:
6500 case R_PPC64_GOT16_LO:
6501 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 6502 dogot:
6503 {
6504 struct got_entry *ent;
6505
58ac9f71
AM		 6506 if (h != NULL)
6507 ent = h->got.glist;
411e1bfb
AM		 6508 else
6509 ent = local_got_ents[r_symndx];
6510
6511 for (; ent != NULL; ent = ent->next)
6512 if (ent->addend == rel->r_addend
e717da7e 6513 && ent->owner == abfd
411e1bfb
AM		 6514 && ent->tls_type == tls_type)
6515 break;
6516 if (ent == NULL)
6517 abort ();
6518 if (ent->got.refcount > 0)
6519 ent->got.refcount -= 1;
6520 }
a33d1f77 6521 break;
65f38f15 6522
a33d1f77
AM		 6523 case R_PPC64_PLT16_HA:
6524 case R_PPC64_PLT16_HI:
6525 case R_PPC64_PLT16_LO:
6526 case R_PPC64_PLT32:
6527 case R_PPC64_PLT64:
721956f4
AM		 6528 case R_PPC64_REL14:
6529 case R_PPC64_REL14_BRNTAKEN:
6530 case R_PPC64_REL14_BRTAKEN:
5d1634d7 6531 case R_PPC64_REL24:
58ac9f71 6532 if (h != NULL)
5d1634d7 6533 {
411e1bfb
AM		 6534 struct plt_entry *ent;
6535
411e1bfb
AM		 6536 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6537 if (ent->addend == rel->r_addend)
6538 break;
7c6c1722 6539 if (ent != NULL && ent->plt.refcount > 0)
411e1bfb 6540 ent->plt.refcount -= 1;
5d1634d7 6541 }
e86ce104 6542 break;
5d1634d7 6543
a33d1f77
AM		 6544 default:
6545 break;
6546 }
6547 }
b34976b6 6548 return TRUE;
5bd4f169
AM		 6549}
6550
deb0e272
AM		 6551/* The maximum size of .sfpr. */
6552#define SFPR_MAX (218*4)
6553
6554struct sfpr_def_parms
6555{
699733f6
AM		 6556 const char name[12];
6557 unsigned char lo, hi;
deb0e272
AM		 6558 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6559 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6560};
6561
6562/* Auto-generate _save*, _rest* functions in .sfpr. */
6563
4dfe6ac6 6564static bfd_boolean
deb0e272
AM		 6565sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6566{
6567 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6568 unsigned int i;
6569 size_t len = strlen (parm->name);
6570 bfd_boolean writing = FALSE;
699733f6 6571 char sym[16];
deb0e272 6572
4dfe6ac6
NC		 6573 if (htab == NULL)
6574 return FALSE;
6575
deb0e272
AM		 6576 memcpy (sym, parm->name, len);
6577 sym[len + 2] = 0;
6578
6579 for (i = parm->lo; i <= parm->hi; i++)
6580 {
6581 struct elf_link_hash_entry *h;
6582
6583 sym[len + 0] = i / 10 + '0';
6584 sym[len + 1] = i % 10 + '0';
6585 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6586 if (h != NULL
f5385ebf 6587 && !h->def_regular)
deb0e272
AM		 6588 {
6589 h->root.type = bfd_link_hash_defined;
6590 h->root.u.def.section = htab->sfpr;
6591 h->root.u.def.value = htab->sfpr->size;
6592 h->type = STT_FUNC;
f5385ebf 6593 h->def_regular = 1;
deb0e272
AM		 6594 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6595 writing = TRUE;
6596 if (htab->sfpr->contents == NULL)
6597 {
6598 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6599 if (htab->sfpr->contents == NULL)
6600 return FALSE;
6601 }
6602 }
6603 if (writing)
6604 {
6605 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6606 if (i != parm->hi)
6607 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6608 else
6609 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6610 htab->sfpr->size = p - htab->sfpr->contents;
6611 }
6612 }
6613
6614 return TRUE;
6615}
6616
6617static bfd_byte *
6618savegpr0 (bfd *abfd, bfd_byte *p, int r)
6619{
6620 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6621 return p + 4;
6622}
6623
6624static bfd_byte *
6625savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6626{
6627 p = savegpr0 (abfd, p, r);
a078d95a 6628 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6629 p = p + 4;
6630 bfd_put_32 (abfd, BLR, p);
6631 return p + 4;
6632}
6633
6634static bfd_byte *
6635restgpr0 (bfd *abfd, bfd_byte *p, int r)
6636{
6637 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6638 return p + 4;
6639}
6640
6641static bfd_byte *
6642restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6643{
a078d95a 6644 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6645 p = p + 4;
6646 p = restgpr0 (abfd, p, r);
6647 bfd_put_32 (abfd, MTLR_R0, p);
6648 p = p + 4;
6649 if (r == 29)
6650 {
6651 p = restgpr0 (abfd, p, 30);
6652 p = restgpr0 (abfd, p, 31);
6653 }
6654 bfd_put_32 (abfd, BLR, p);
6655 return p + 4;
6656}
6657
6658static bfd_byte *
6659savegpr1 (bfd *abfd, bfd_byte *p, int r)
6660{
6661 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6662 return p + 4;
6663}
6664
6665static bfd_byte *
6666savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6667{
6668 p = savegpr1 (abfd, p, r);
6669 bfd_put_32 (abfd, BLR, p);
6670 return p + 4;
6671}
6672
6673static bfd_byte *
6674restgpr1 (bfd *abfd, bfd_byte *p, int r)
6675{
6676 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6677 return p + 4;
6678}
6679
6680static bfd_byte *
6681restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6682{
6683 p = restgpr1 (abfd, p, r);
6684 bfd_put_32 (abfd, BLR, p);
6685 return p + 4;
6686}
6687
6688static bfd_byte *
6689savefpr (bfd *abfd, bfd_byte *p, int r)
6690{
6691 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6692 return p + 4;
6693}
6694
6695static bfd_byte *
6696savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6697{
6698 p = savefpr (abfd, p, r);
a078d95a 6699 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6700 p = p + 4;
6701 bfd_put_32 (abfd, BLR, p);
6702 return p + 4;
6703}
6704
6705static bfd_byte *
6706restfpr (bfd *abfd, bfd_byte *p, int r)
6707{
6708 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6709 return p + 4;
6710}
6711
6712static bfd_byte *
6713restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6714{
a078d95a 6715 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6716 p = p + 4;
6717 p = restfpr (abfd, p, r);
6718 bfd_put_32 (abfd, MTLR_R0, p);
6719 p = p + 4;
6720 if (r == 29)
6721 {
6722 p = restfpr (abfd, p, 30);
6723 p = restfpr (abfd, p, 31);
6724 }
6725 bfd_put_32 (abfd, BLR, p);
6726 return p + 4;
6727}
6728
6729static bfd_byte *
6730savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6731{
6732 p = savefpr (abfd, p, r);
6733 bfd_put_32 (abfd, BLR, p);
6734 return p + 4;
6735}
6736
6737static bfd_byte *
6738restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6739{
6740 p = restfpr (abfd, p, r);
6741 bfd_put_32 (abfd, BLR, p);
6742 return p + 4;
6743}
6744
6745static bfd_byte *
6746savevr (bfd *abfd, bfd_byte *p, int r)
6747{
6748 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6749 p = p + 4;
6750 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6751 return p + 4;
6752}
6753
6754static bfd_byte *
6755savevr_tail (bfd *abfd, bfd_byte *p, int r)
6756{
6757 p = savevr (abfd, p, r);
6758 bfd_put_32 (abfd, BLR, p);
6759 return p + 4;
6760}
6761
6762static bfd_byte *
6763restvr (bfd *abfd, bfd_byte *p, int r)
6764{
6765 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6766 p = p + 4;
6767 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6768 return p + 4;
6769}
6770
6771static bfd_byte *
6772restvr_tail (bfd *abfd, bfd_byte *p, int r)
6773{
6774 p = restvr (abfd, p, r);
6775 bfd_put_32 (abfd, BLR, p);
6776 return p + 4;
6777}
6778
e86ce104
AM		 6779/* Called via elf_link_hash_traverse to transfer dynamic linking
6780 information on function code symbol entries to their corresponding
6781 function descriptor symbol entries. */
deb0e272 6782
b34976b6 6783static bfd_boolean
4ce794b7 6784func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 6785{
e86ce104 6786 struct bfd_link_info *info;
65f38f15 6787 struct ppc_link_hash_table *htab;
411e1bfb 6788 struct plt_entry *ent;
50bc7936
AM		 6789 struct ppc_link_hash_entry *fh;
6790 struct ppc_link_hash_entry *fdh;
6791 bfd_boolean force_local;
5bd4f169 6792
50bc7936
AM		 6793 fh = (struct ppc_link_hash_entry *) h;
6794 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 6795 return TRUE;
e86ce104 6796
4ce794b7 6797 info = inf;
65f38f15 6798 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6799 if (htab == NULL)
6800 return FALSE;
5bd4f169 6801
c09bdfe5
AM		 6802 /* Resolve undefined references to dot-symbols as the value
6803 in the function descriptor, if we have one in a regular object.
6804 This is to satisfy cases like ".quad .foo". Calls to functions
6805 in dynamic objects are handled elsewhere. */
6806 if (fh->elf.root.type == bfd_link_hash_undefweak
6807 && fh->was_undefined
b31867b6
AM		 6808 && (fdh = defined_func_desc (fh)) != NULL
6809 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6810 && opd_entry_value (fdh->elf.root.u.def.section,
6811 fdh->elf.root.u.def.value,
c09bdfe5 6812 &fh->elf.root.u.def.section,
aef36ac1 6813 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
c09bdfe5 6814 {
b31867b6 6815 fh->elf.root.type = fdh->elf.root.type;
f5385ebf 6816 fh->elf.forced_local = 1;
b31867b6
AM		 6817 fh->elf.def_regular = fdh->elf.def_regular;
6818 fh->elf.def_dynamic = fdh->elf.def_dynamic;
c09bdfe5
AM		 6819 }
6820
e86ce104
AM		 6821 /* If this is a function code symbol, transfer dynamic linking
6822 information to the function descriptor symbol. */
50bc7936 6823 if (!fh->is_func)
b34976b6 6824 return TRUE;
e86ce104 6825
50bc7936 6826 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 6827 if (ent->plt.refcount > 0)
6828 break;
50bc7936
AM		 6829 if (ent == NULL
6830 || fh->elf.root.root.string[0] != '.'
6831 || fh->elf.root.root.string[1] == '\0')
6832 return TRUE;
5bd4f169 6833
50bc7936
AM		 6834 /* Find the corresponding function descriptor symbol. Create it
6835 as undefined if necessary. */
5bd4f169 6836
b31867b6 6837 fdh = lookup_fdh (fh, htab);
50bc7936 6838 if (fdh == NULL
0e1862bb 6839 && !bfd_link_executable (info)
50bc7936
AM		 6840 && (fh->elf.root.type == bfd_link_hash_undefined
6841 || fh->elf.root.type == bfd_link_hash_undefweak))
6842 {
908b32fc 6843 fdh = make_fdh (info, fh);
bb700d78
AM		 6844 if (fdh == NULL)
6845 return FALSE;
50bc7936 6846 }
648cca2c 6847
908b32fc 6848 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 6849 code symbol is strong undefined, make the fake sym the same.
6850 If the function code symbol is defined, then force the fake
6851 descriptor local; We can't support overriding of symbols in a
6852 shared library on a fake descriptor. */
908b32fc
AM		 6853
6854 if (fdh != NULL
6855 && fdh->fake
433817dd 6856 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 6857 {
433817dd
AM		 6858 if (fh->elf.root.type == bfd_link_hash_undefined)
6859 {
6860 fdh->elf.root.type = bfd_link_hash_undefined;
6861 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6862 }
6863 else if (fh->elf.root.type == bfd_link_hash_defined
6864 || fh->elf.root.type == bfd_link_hash_defweak)
6865 {
6866 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6867 }
908b32fc
AM		 6868 }
6869
50bc7936 6870 if (fdh != NULL
f5385ebf 6871 && !fdh->elf.forced_local
0e1862bb 6872 && (!bfd_link_executable (info)
f5385ebf
AM		 6873 || fdh->elf.def_dynamic
6874 || fdh->elf.ref_dynamic
50bc7936
AM		 6875 || (fdh->elf.root.type == bfd_link_hash_undefweak
6876 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6877 {
6878 if (fdh->elf.dynindx == -1)
c152c796 6879 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 6880 return FALSE;
f5385ebf
AM		 6881 fdh->elf.ref_regular |= fh->elf.ref_regular;
6882 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6883 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6884 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 6885 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 6886 {
40d16e0b 6887 move_plt_plist (fh, fdh);
f5385ebf 6888 fdh->elf.needs_plt = 1;
e86ce104 6889 }
50bc7936 6890 fdh->is_func_descriptor = 1;
34814b9f
AM		 6891 fdh->oh = fh;
6892 fh->oh = fdh;
e86ce104
AM		 6893 }
6894
50bc7936
AM		 6895 /* Now that the info is on the function descriptor, clear the
6896 function code sym info. Any function code syms for which we
6897 don't have a definition in a regular file, we force local.
6898 This prevents a shared library from exporting syms that have
6899 been imported from another library. Function code syms that
6900 are really in the library we must leave global to prevent the
6901 linker dragging in a definition from a static library. */
93f3fa99
AM		 6902 force_local = (!fh->elf.def_regular
6903 || fdh == NULL
6904 || !fdh->elf.def_regular
6905 || fdh->elf.forced_local);
50bc7936
AM		 6906 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6907
b34976b6 6908 return TRUE;
e86ce104 6909}
40b8271b 6910
e86ce104 6911/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 6912 this hook to a) provide some gcc support functions, and b) transfer
6913 dynamic linking information gathered so far on function code symbol
6914 entries, to their corresponding function descriptor symbol entries. */
deb0e272 6915
b34976b6 6916static bfd_boolean
4ce794b7
AM		 6917ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6918 struct bfd_link_info *info)
e86ce104
AM		 6919{
6920 struct ppc_link_hash_table *htab;
82bd7b59 6921 unsigned int i;
27fc25a1 6922 static const struct sfpr_def_parms funcs[] =
deb0e272
AM		 6923 {
6924 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6925 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6926 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6927 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6928 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6929 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6930 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6931 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6932 { "._savef", 14, 31, savefpr, savefpr1_tail },
6933 { "._restf", 14, 31, restfpr, restfpr1_tail },
6934 { "_savevr_", 20, 31, savevr, savevr_tail },
6935 { "_restvr_", 20, 31, restvr, restvr_tail }
6936 };
e86ce104
AM		 6937
6938 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6939 if (htab == NULL)
6940 return FALSE;
6941
0e1862bb 6942 if (!bfd_link_relocatable (info)
5295321c 6943 && htab->elf.hgot != NULL)
dba6fa9b
AM		 6944 {
6945 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6946 /* Make .TOC. defined so as to prevent it being made dynamic.
6947 The wrong value here is fixed later in ppc64_elf_set_toc. */
43417696
AM		 6948 if (!htab->elf.hgot->def_regular
6949 || htab->elf.hgot->root.type != bfd_link_hash_defined)
6950 {
6951 htab->elf.hgot->root.type = bfd_link_hash_defined;
6952 htab->elf.hgot->root.u.def.value = 0;
6953 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6954 htab->elf.hgot->def_regular = 1;
6955 htab->elf.hgot->root.linker_def = 1;
6956 }
dba6fa9b 6957 htab->elf.hgot->type = STT_OBJECT;
dba6fa9b
AM		 6958 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6959 | STV_HIDDEN);
6960 }
c66bb0ee 6961
82bd7b59
AM		 6962 if (htab->sfpr == NULL)
6963 /* We don't have any relocs. */
b34976b6 6964 return TRUE;
82bd7b59 6965
deb0e272
AM		 6966 /* Provide any missing _save* and _rest* functions. */
6967 htab->sfpr->size = 0;
7d4c687d 6968 if (htab->params->save_restore_funcs)
27fc25a1
AM		 6969 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6970 if (!sfpr_define (info, &funcs[i]))
6971 return FALSE;
82bd7b59 6972
4ce794b7 6973 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 6974
eea6121a 6975 if (htab->sfpr->size == 0)
8423293d 6976 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 6977
b34976b6 6978 return TRUE;
e86ce104
AM		 6979}
6980
a345bc8d
AM		 6981/* Return true if we have dynamic relocs that apply to read-only sections. */
6982
6983static bfd_boolean
6984readonly_dynrelocs (struct elf_link_hash_entry *h)
6985{
6986 struct ppc_link_hash_entry *eh;
6987 struct elf_dyn_relocs *p;
6988
6989 eh = (struct ppc_link_hash_entry *) h;
6990 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6991 {
6992 asection *s = p->sec->output_section;
6993
6994 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6995 return TRUE;
6996 }
6997 return FALSE;
6998}
6999
e86ce104
AM		 7000/* Adjust a symbol defined by a dynamic object and referenced by a
7001 regular object. The current definition is in some section of the
7002 dynamic object, but we're not including those sections. We have to
7003 change the definition to something the rest of the link can
7004 understand. */
7005
b34976b6 7006static bfd_boolean
4ce794b7
AM		 7007ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7008 struct elf_link_hash_entry *h)
e86ce104
AM		 7009{
7010 struct ppc_link_hash_table *htab;
e86ce104 7011 asection *s;
e86ce104
AM		 7012
7013 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7014 if (htab == NULL)
7015 return FALSE;
e86ce104
AM		 7016
7017 /* Deal with function syms. */
7018 if (h->type == STT_FUNC
e054468f 7019 || h->type == STT_GNU_IFUNC
f5385ebf 7020 || h->needs_plt)
e86ce104
AM		 7021 {
7022 /* Clear procedure linkage table information for any symbol that
7023 won't need a .plt entry. */
411e1bfb
AM		 7024 struct plt_entry *ent;
7025 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7026 if (ent->plt.refcount > 0)
7027 break;
8387904d 7028 if (ent == NULL
e054468f
AM		 7029 || (h->type != STT_GNU_IFUNC
7030 && (SYMBOL_CALLS_LOCAL (info, h)
7031 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7032 && h->root.type == bfd_link_hash_undefweak))))
40b8271b 7033 {
411e1bfb 7034 h->plt.plist = NULL;
f5385ebf 7035 h->needs_plt = 0;
d1eca1e4 7036 h->pointer_equality_needed = 0;
40b8271b 7037 }
a345bc8d
AM		 7038 else if (abiversion (info->output_bfd) == 2)
7039 {
d1eca1e4
AM		 7040 /* Taking a function's address in a read/write section
7041 doesn't require us to define the function symbol in the
7042 executable on a global entry stub. A dynamic reloc can
7043 be used instead. */
7044 if (h->pointer_equality_needed
1009ef28 7045 && h->type != STT_GNU_IFUNC
d1eca1e4
AM		 7046 && !readonly_dynrelocs (h))
7047 {
7048 h->pointer_equality_needed = 0;
7049 h->non_got_ref = 0;
7050 }
7051
a345bc8d
AM		 7052 /* After adjust_dynamic_symbol, non_got_ref set in the
7053 non-shared case means that we have allocated space in
7054 .dynbss for the symbol and thus dyn_relocs for this
7055 symbol should be discarded.
7056 If we get here we know we are making a PLT entry for this
7057 symbol, and in an executable we'd normally resolve
7058 relocations against this symbol to the PLT entry. Allow
7059 dynamic relocs if the reference is weak, and the dynamic
7060 relocs will not cause text relocation. */
d1eca1e4
AM		 7061 else if (!h->ref_regular_nonweak
7062 && h->non_got_ref
7063 && h->type != STT_GNU_IFUNC
7064 && !readonly_dynrelocs (h))
a345bc8d
AM		 7065 h->non_got_ref = 0;
7066
7067 /* If making a plt entry, then we don't need copy relocs. */
7068 return TRUE;
7069 }
5bd4f169 7070 }
bbd7ec4a 7071 else
411e1bfb 7072 h->plt.plist = NULL;
5bd4f169
AM		 7073
7074 /* If this is a weak symbol, and there is a real definition, the
7075 processor independent code will have arranged for us to see the
7076 real definition first, and we can just use the same value. */
f6e332e6 7077 if (h->u.weakdef != NULL)
5bd4f169 7078 {
f6e332e6
AM		 7079 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7080 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7081 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7082 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 7083 if (ELIMINATE_COPY_RELOCS)
f6e332e6 7084 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 7085 return TRUE;
5bd4f169
AM		 7086 }
7087
5bd4f169
AM		 7088 /* If we are creating a shared library, we must presume that the
7089 only references to the symbol are via the global offset table.
7090 For such cases we need not do anything here; the relocations will
7091 be handled correctly by relocate_section. */
0e1862bb 7092 if (bfd_link_pic (info))
b34976b6 7093 return TRUE;
5bd4f169 7094
65f38f15
AM		 7095 /* If there are no references to this symbol that do not use the
7096 GOT, we don't need to generate a copy reloc. */
f5385ebf 7097 if (!h->non_got_ref)
b34976b6 7098 return TRUE;
65f38f15 7099
b186458a
JJ		 7100 /* Don't generate a copy reloc for symbols defined in the executable. */
7101 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7102 return TRUE;
7103
a127494f
AM		 7104 /* If -z nocopyreloc was given, don't generate them either. */
7105 if (info->nocopyreloc)
7106 {
7107 h->non_got_ref = 0;
7108 return TRUE;
7109 }
7110
a345bc8d
AM		 7111 /* If we didn't find any dynamic relocs in read-only sections, then
7112 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7113 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
65f38f15 7114 {
a345bc8d
AM		 7115 h->non_got_ref = 0;
7116 return TRUE;
65f38f15
AM		 7117 }
7118
a127494f
AM		 7119 /* Protected variables do not work with .dynbss. The copy in
7120 .dynbss won't be used by the shared library with the protected
7121 definition for the variable. Text relocations are preferable
7122 to an incorrect program. */
7123 if (h->protected_def)
7124 {
7125 h->non_got_ref = 0;
7126 return TRUE;
7127 }
7128
5d35169e 7129 if (h->plt.plist != NULL)
97b639ba
AM		 7130 {
7131 /* We should never get here, but unfortunately there are versions
7132 of gcc out there that improperly (for this ABI) put initialized
7133 function pointers, vtable refs and suchlike in read-only
7134 sections. Allow them to proceed, but warn that this might
7135 break at runtime. */
25f53a85 7136 info->callbacks->einfo
bc30df16 7137 (_("%P: copy reloc against `%T' requires lazy plt linking; "
25f53a85 7138 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
97b639ba
AM		 7139 h->root.root.string);
7140 }
5d35169e
AM		 7141
7142 /* This is a reference to a symbol defined by a dynamic object which
7143 is not a function. */
7144
5bd4f169
AM		 7145 /* We must allocate the symbol in our .dynbss section, which will
7146 become part of the .bss section of the executable. There will be
7147 an entry for this symbol in the .dynsym section. The dynamic
7148 object will contain position independent code, so all references
7149 from the dynamic object to this symbol will go through the global
7150 offset table. The dynamic linker will use the .dynsym entry to
7151 determine the address it must put in the global offset table, so
7152 both the dynamic object and the regular object will refer to the
7153 same memory location for the variable. */
5bd4f169 7154
04c9666a
AM		 7155 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7156 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 7157 runtime process image. We need to remember the offset into the
7158 .rela.bss section we are going to use. */
1d7e9d18 7159 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5bd4f169 7160 {
eea6121a 7161 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 7162 h->needs_copy = 1;
5bd4f169
AM		 7163 }
7164
4ce794b7 7165 s = htab->dynbss;
5bd4f169 7166
6cabe1ea 7167 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5bd4f169
AM		 7168}
7169
e86ce104
AM		 7170/* If given a function descriptor symbol, hide both the function code
7171 sym and the descriptor. */
7172static void
4ce794b7
AM		 7173ppc64_elf_hide_symbol (struct bfd_link_info *info,
7174 struct elf_link_hash_entry *h,
7175 bfd_boolean force_local)
e86ce104 7176{
34814b9f 7177 struct ppc_link_hash_entry *eh;
e86ce104
AM		 7178 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7179
34814b9f
AM		 7180 eh = (struct ppc_link_hash_entry *) h;
7181 if (eh->is_func_descriptor)
e86ce104 7182 {
34814b9f 7183 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 7184
721956f4 7185 if (fh == NULL)
d1329ca3
AM		 7186 {
7187 const char *p, *q;
7188 struct ppc_link_hash_table *htab;
7189 char save;
7190
7191 /* We aren't supposed to use alloca in BFD because on
7192 systems which do not have alloca the version in libiberty
7193 calls xmalloc, which might cause the program to crash
7194 when it runs out of memory. This function doesn't have a
7195 return status, so there's no way to gracefully return an
7196 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 7197 accessed; It's either a string in an ELF string table,
7198 or allocated in an objalloc structure. */
d1329ca3 7199
34814b9f 7200 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 7201 save = *p;
7202 *(char *) p = '.';
7203 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7204 if (htab == NULL)
7205 return;
7206
34814b9f
AM		 7207 fh = (struct ppc_link_hash_entry *)
7208 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7209 *(char *) p = save;
7210
7211 /* Unfortunately, if it so happens that the string we were
7212 looking for was allocated immediately before this string,
7213 then we overwrote the string terminator. That's the only
7214 reason the lookup should fail. */
7215 if (fh == NULL)
7216 {
34814b9f
AM		 7217 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7218 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 7219 --q, --p;
34814b9f
AM		 7220 if (q < eh->elf.root.root.string && *p == '.')
7221 fh = (struct ppc_link_hash_entry *)
7222 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7223 }
7224 if (fh != NULL)
7225 {
34814b9f
AM		 7226 eh->oh = fh;
7227 fh->oh = eh;
d1329ca3
AM		 7228 }
7229 }
e86ce104 7230 if (fh != NULL)
34814b9f 7231 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 7232 }
7233}
7234
411e1bfb 7235static bfd_boolean
8843416a
AM		 7236get_sym_h (struct elf_link_hash_entry **hp,
7237 Elf_Internal_Sym **symp,
7238 asection **symsecp,
f961d9dd 7239 unsigned char **tls_maskp,
8843416a
AM		 7240 Elf_Internal_Sym **locsymsp,
7241 unsigned long r_symndx,
7242 bfd *ibfd)
411e1bfb 7243{
0ffa91dd 7244 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM		 7245
7246 if (r_symndx >= symtab_hdr->sh_info)
7247 {
7248 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7249 struct elf_link_hash_entry *h;
7250
7251 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7252 h = elf_follow_link (h);
411e1bfb
AM		 7253
7254 if (hp != NULL)
7255 *hp = h;
7256
7257 if (symp != NULL)
7258 *symp = NULL;
7259
7260 if (symsecp != NULL)
7261 {
7262 asection *symsec = NULL;
7263 if (h->root.type == bfd_link_hash_defined
7264 || h->root.type == bfd_link_hash_defweak)
7265 symsec = h->root.u.def.section;
7266 *symsecp = symsec;
7267 }
7268
e7b938ca 7269 if (tls_maskp != NULL)
411e1bfb
AM		 7270 {
7271 struct ppc_link_hash_entry *eh;
7272
7273 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 7274 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 7275 }
7276 }
7277 else
7278 {
7279 Elf_Internal_Sym *sym;
7280 Elf_Internal_Sym *locsyms = *locsymsp;
7281
7282 if (locsyms == NULL)
7283 {
7284 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7285 if (locsyms == NULL)
7286 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7287 symtab_hdr->sh_info,
7288 0, NULL, NULL, NULL);
7289 if (locsyms == NULL)
7290 return FALSE;
7291 *locsymsp = locsyms;
7292 }
7293 sym = locsyms + r_symndx;
7294
7295 if (hp != NULL)
7296 *hp = NULL;
7297
7298 if (symp != NULL)
7299 *symp = sym;
7300
7301 if (symsecp != NULL)
cb33740c 7302 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 7303
e7b938ca 7304 if (tls_maskp != NULL)
411e1bfb
AM		 7305 {
7306 struct got_entry **lgot_ents;
f961d9dd 7307 unsigned char *tls_mask;
411e1bfb 7308
e7b938ca 7309 tls_mask = NULL;
411e1bfb
AM		 7310 lgot_ents = elf_local_got_ents (ibfd);
7311 if (lgot_ents != NULL)
7312 {
e054468f
AM		 7313 struct plt_entry **local_plt = (struct plt_entry **)
7314 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 7315 unsigned char *lgot_masks = (unsigned char *)
e054468f 7316 (local_plt + symtab_hdr->sh_info);
e7b938ca 7317 tls_mask = &lgot_masks[r_symndx];
411e1bfb 7318 }
e7b938ca 7319 *tls_maskp = tls_mask;
411e1bfb
AM		 7320 }
7321 }
7322 return TRUE;
7323}
7324
e7b938ca 7325/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 7326 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 7327 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 7328
7329static int
f961d9dd 7330get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM		 7331 unsigned long *toc_symndx,
7332 bfd_vma *toc_addend,
0d4792f7 7333 Elf_Internal_Sym **locsymsp,
3a71aa26
AM		 7334 const Elf_Internal_Rela *rel,
7335 bfd *ibfd)
411e1bfb
AM		 7336{
7337 unsigned long r_symndx;
0d4792f7 7338 int next_r;
411e1bfb
AM		 7339 struct elf_link_hash_entry *h;
7340 Elf_Internal_Sym *sym;
7341 asection *sec;
7342 bfd_vma off;
7343
7344 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 7345 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 7346 return 0;
411e1bfb 7347
e7b938ca 7348 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 7349 || sec == NULL
6bee8834 7350 || ppc64_elf_section_data (sec) == NULL
7c8fe5c4 7351 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 7352 return 1;
411e1bfb
AM		 7353
7354 /* Look inside a TOC section too. */
7355 if (h != NULL)
7356 {
7357 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7358 off = h->root.u.def.value;
7359 }
7360 else
7361 off = sym->st_value;
7362 off += rel->r_addend;
7363 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM		 7364 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7365 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM		 7366 if (toc_symndx != NULL)
7367 *toc_symndx = r_symndx;
3a71aa26
AM		 7368 if (toc_addend != NULL)
7369 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7370 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7371 return 0;
854b41e7 7372 if ((h == NULL || is_static_defined (h))
0d4792f7
AM		 7373 && (next_r == -1 || next_r == -2))
7374 return 1 - next_r;
951fd09b 7375 return 1;
411e1bfb
AM		 7376}
7377
3b421ab3
AM		 7378/* Find (or create) an entry in the tocsave hash table. */
7379
7380static struct tocsave_entry *
7381tocsave_find (struct ppc_link_hash_table *htab,
7382 enum insert_option insert,
7383 Elf_Internal_Sym **local_syms,
7384 const Elf_Internal_Rela *irela,
7385 bfd *ibfd)
7386{
7387 unsigned long r_indx;
7388 struct elf_link_hash_entry *h;
7389 Elf_Internal_Sym *sym;
7390 struct tocsave_entry ent, *p;
7391 hashval_t hash;
7392 struct tocsave_entry **slot;
7393
7394 r_indx = ELF64_R_SYM (irela->r_info);
7395 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7396 return NULL;
7397 if (ent.sec == NULL || ent.sec->output_section == NULL)
7398 {
7399 (*_bfd_error_handler)
7400 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7401 return NULL;
7402 }
7403
7404 if (h != NULL)
7405 ent.offset = h->root.u.def.value;
7406 else
7407 ent.offset = sym->st_value;
7408 ent.offset += irela->r_addend;
7409
7410 hash = tocsave_htab_hash (&ent);
7411 slot = ((struct tocsave_entry **)
7412 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7413 if (slot == NULL)
7414 return NULL;
7415
7416 if (*slot == NULL)
7417 {
7418 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7419 if (p == NULL)
7420 return NULL;
7421 *p = ent;
7422 *slot = p;
7423 }
7424 return *slot;
7425}
7426
754021d0 7427/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 7428 code for the old ABI, these will already have been done. */
754021d0
AM		 7429
7430static bfd_boolean
7431adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7432{
7433 struct ppc_link_hash_entry *eh;
7434 asection *sym_sec;
74f0fb50 7435 struct _opd_sec_data *opd;
754021d0
AM		 7436
7437 if (h->root.type == bfd_link_hash_indirect)
7438 return TRUE;
7439
754021d0
AM		 7440 if (h->root.type != bfd_link_hash_defined
7441 && h->root.type != bfd_link_hash_defweak)
7442 return TRUE;
7443
7444 eh = (struct ppc_link_hash_entry *) h;
7445 if (eh->adjust_done)
7446 return TRUE;
7447
7448 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM		 7449 opd = get_opd_info (sym_sec);
7450 if (opd != NULL && opd->adjust != NULL)
754021d0 7451 {
51aecdc5 7452 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
4025353c
AM		 7453 if (adjust == -1)
7454 {
7455 /* This entry has been deleted. */
b3fac117 7456 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 7457 if (dsec == NULL)
7458 {
7459 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
dbaa2011 7460 if (discarded_section (dsec))
81688140 7461 {
b3fac117 7462 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 7463 break;
7464 }
7465 }
4025353c 7466 eh->elf.root.u.def.value = 0;
81688140 7467 eh->elf.root.u.def.section = dsec;
4025353c
AM		 7468 }
7469 else
7470 eh->elf.root.u.def.value += adjust;
754021d0
AM		 7471 eh->adjust_done = 1;
7472 }
7473 return TRUE;
7474}
7475
8c1d1bb8 7476/* Handles decrementing dynamic reloc counts for the reloc specified by
19e08130 7477 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
8c1d1bb8
AM		 7478 have already been determined. */
7479
7480static bfd_boolean
7481dec_dynrel_count (bfd_vma r_info,
7482 asection *sec,
7483 struct bfd_link_info *info,
7484 Elf_Internal_Sym **local_syms,
7485 struct elf_link_hash_entry *h,
19e08130 7486 Elf_Internal_Sym *sym)
8c1d1bb8
AM		 7487{
7488 enum elf_ppc64_reloc_type r_type;
19e08130 7489 asection *sym_sec = NULL;
8c1d1bb8
AM		 7490
7491 /* Can this reloc be dynamic? This switch, and later tests here
7492 should be kept in sync with the code in check_relocs. */
7493 r_type = ELF64_R_TYPE (r_info);
7494 switch (r_type)
7495 {
7496 default:
7497 return TRUE;
7498
7499 case R_PPC64_TPREL16:
7500 case R_PPC64_TPREL16_LO:
7501 case R_PPC64_TPREL16_HI:
7502 case R_PPC64_TPREL16_HA:
7503 case R_PPC64_TPREL16_DS:
7504 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 7505 case R_PPC64_TPREL16_HIGH:
7506 case R_PPC64_TPREL16_HIGHA:
8c1d1bb8
AM		 7507 case R_PPC64_TPREL16_HIGHER:
7508 case R_PPC64_TPREL16_HIGHERA:
7509 case R_PPC64_TPREL16_HIGHEST:
7510 case R_PPC64_TPREL16_HIGHESTA:
0e1862bb 7511 if (!bfd_link_pic (info))
8c1d1bb8
AM		 7512 return TRUE;
7513
7514 case R_PPC64_TPREL64:
7515 case R_PPC64_DTPMOD64:
7516 case R_PPC64_DTPREL64:
7517 case R_PPC64_ADDR64:
7518 case R_PPC64_REL30:
7519 case R_PPC64_REL32:
7520 case R_PPC64_REL64:
7521 case R_PPC64_ADDR14:
7522 case R_PPC64_ADDR14_BRNTAKEN:
7523 case R_PPC64_ADDR14_BRTAKEN:
7524 case R_PPC64_ADDR16:
7525 case R_PPC64_ADDR16_DS:
7526 case R_PPC64_ADDR16_HA:
7527 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 7528 case R_PPC64_ADDR16_HIGH:
7529 case R_PPC64_ADDR16_HIGHA:
8c1d1bb8
AM		 7530 case R_PPC64_ADDR16_HIGHER:
7531 case R_PPC64_ADDR16_HIGHERA:
7532 case R_PPC64_ADDR16_HIGHEST:
7533 case R_PPC64_ADDR16_HIGHESTA:
7534 case R_PPC64_ADDR16_LO:
7535 case R_PPC64_ADDR16_LO_DS:
7536 case R_PPC64_ADDR24:
7537 case R_PPC64_ADDR32:
7538 case R_PPC64_UADDR16:
7539 case R_PPC64_UADDR32:
7540 case R_PPC64_UADDR64:
7541 case R_PPC64_TOC:
7542 break;
7543 }
7544
7545 if (local_syms != NULL)
7546 {
7547 unsigned long r_symndx;
8c1d1bb8
AM		 7548 bfd *ibfd = sec->owner;
7549
7550 r_symndx = ELF64_R_SYM (r_info);
7551 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7552 return FALSE;
7553 }
7554
0e1862bb 7555 if ((bfd_link_pic (info)
1d483afe 7556 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8 7557 || (h != NULL
198f1157 7558 && (!SYMBOLIC_BIND (info, h)
8c1d1bb8
AM		 7559 || h->root.type == bfd_link_hash_defweak
7560 || !h->def_regular))))
7561 || (ELIMINATE_COPY_RELOCS
0e1862bb 7562 && !bfd_link_pic (info)
8c1d1bb8
AM		 7563 && h != NULL
7564 && (h->root.type == bfd_link_hash_defweak
7565 || !h->def_regular)))
7566 ;
7567 else
7568 return TRUE;
7569
7570 if (h != NULL)
6edfbbad 7571 {
19e08130
AM		 7572 struct elf_dyn_relocs *p;
7573 struct elf_dyn_relocs **pp;
7574 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7575
7576 /* elf_gc_sweep may have already removed all dyn relocs associated
7577 with local syms for a given section. Also, symbol flags are
7578 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7579 report a dynreloc miscount. */
7580 if (*pp == NULL && info->gc_sections)
7581 return TRUE;
7582
7583 while ((p = *pp) != NULL)
60124e18 7584 {
19e08130
AM		 7585 if (p->sec == sec)
7586 {
7587 if (!must_be_dyn_reloc (info, r_type))
7588 p->pc_count -= 1;
7589 p->count -= 1;
7590 if (p->count == 0)
7591 *pp = p->next;
7592 return TRUE;
7593 }
7594 pp = &p->next;
60124e18 7595 }
6edfbbad 7596 }
19e08130
AM		 7597 else
7598 {
7599 struct ppc_dyn_relocs *p;
7600 struct ppc_dyn_relocs **pp;
7601 void *vpp;
7602 bfd_boolean is_ifunc;
8c1d1bb8 7603
19e08130
AM		 7604 if (local_syms == NULL)
7605 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7606 if (sym_sec == NULL)
7607 sym_sec = sec;
c57da1a7 7608
19e08130
AM		 7609 vpp = &elf_section_data (sym_sec)->local_dynrel;
7610 pp = (struct ppc_dyn_relocs **) vpp;
7611
7612 if (*pp == NULL && info->gc_sections)
7613 return TRUE;
7614
7615 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7616 while ((p = *pp) != NULL)
8c1d1bb8 7617 {
19e08130
AM		 7618 if (p->sec == sec && p->ifunc == is_ifunc)
7619 {
7620 p->count -= 1;
7621 if (p->count == 0)
7622 *pp = p->next;
7623 return TRUE;
7624 }
7625 pp = &p->next;
8c1d1bb8 7626 }
8c1d1bb8
AM		 7627 }
7628
8de848d8 7629 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
25f53a85 7630 sec->owner, sec);
8c1d1bb8
AM		 7631 bfd_set_error (bfd_error_bad_value);
7632 return FALSE;
7633}
7634
754021d0
AM		 7635/* Remove unused Official Procedure Descriptor entries. Currently we
7636 only remove those associated with functions in discarded link-once
7637 sections, or weakly defined functions that have been overridden. It
7638 would be possible to remove many more entries for statically linked
7639 applications. */
7640
b34976b6 7641bfd_boolean
e7d1c40c 7642ppc64_elf_edit_opd (struct bfd_link_info *info)
1e2f5b6e
AM		 7643{
7644 bfd *ibfd;
754021d0 7645 bfd_boolean some_edited = FALSE;
3f764659 7646 asection *need_pad = NULL;
e7d1c40c
AM		 7647 struct ppc_link_hash_table *htab;
7648
7649 htab = ppc_hash_table (info);
7650 if (htab == NULL)
7651 return FALSE;
1e2f5b6e 7652
c72f2fb2 7653 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1e2f5b6e
AM		 7654 {
7655 asection *sec;
7656 Elf_Internal_Rela *relstart, *rel, *relend;
7657 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 7658 Elf_Internal_Sym *local_syms;
74f0fb50 7659 struct _opd_sec_data *opd;
51aecdc5 7660 bfd_boolean need_edit, add_aux_fields, broken;
3f764659 7661 bfd_size_type cnt_16b = 0;
1e2f5b6e 7662
854b41e7
AM		 7663 if (!is_ppc64_elf (ibfd))
7664 continue;
7665
1e2f5b6e 7666 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 7667 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 7668 continue;
7669
dbaa2011 7670 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4b85d634
AM		 7671 continue;
7672
1e2f5b6e
AM		 7673 if (sec->output_section == bfd_abs_section_ptr)
7674 continue;
7675
7676 /* Look through the section relocs. */
7677 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7678 continue;
7679
6cdc0ccc 7680 local_syms = NULL;
0ffa91dd 7681 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM		 7682
7683 /* Read the relocations. */
4ce794b7 7684 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 7685 info->keep_memory);
1e2f5b6e 7686 if (relstart == NULL)
b34976b6 7687 return FALSE;
1e2f5b6e
AM		 7688
7689 /* First run through the relocs to check they are sane, and to
7690 determine whether we need to edit this opd section. */
b34976b6 7691 need_edit = FALSE;
51aecdc5 7692 broken = FALSE;
3f764659 7693 need_pad = sec;
1e2f5b6e 7694 relend = relstart + sec->reloc_count;
50bc7936 7695 for (rel = relstart; rel < relend; )
1e2f5b6e 7696 {
04c9666a 7697 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 7698 unsigned long r_symndx;
7699 asection *sym_sec;
7700 struct elf_link_hash_entry *h;
7701 Elf_Internal_Sym *sym;
51aecdc5 7702 bfd_vma offset;
1e2f5b6e 7703
51aecdc5 7704 /* .opd contains an array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 7705 only interested in the reloc pointing to a function entry
7706 point. */
51aecdc5
AM		 7707 offset = rel->r_offset;
7708 if (rel + 1 == relend
7709 || rel[1].r_offset != offset + 8)
1e2f5b6e
AM		 7710 {
7711 /* If someone messes with .opd alignment then after a
7712 "ld -r" we might have padding in the middle of .opd.
7713 Also, there's nothing to prevent someone putting
7714 something silly in .opd with the assembler. No .opd
b34976b6 7715 optimization for them! */
3f764659 7716 broken_opd:
1e2f5b6e 7717 (*_bfd_error_handler)
d003868e 7718 (_("%B: .opd is not a regular array of opd entries"), ibfd);
51aecdc5 7719 broken = TRUE;
1e2f5b6e
AM		 7720 break;
7721 }
7722
50bc7936
AM		 7723 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7724 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7725 {
7726 (*_bfd_error_handler)
d003868e
AM		 7727 (_("%B: unexpected reloc type %u in .opd section"),
7728 ibfd, r_type);
51aecdc5 7729 broken = TRUE;
50bc7936
AM		 7730 break;
7731 }
7732
1e2f5b6e 7733 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 7734 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7735 r_symndx, ibfd))
50bc7936 7736 goto error_ret;
1e2f5b6e
AM		 7737
7738 if (sym_sec == NULL || sym_sec->owner == NULL)
7739 {
411e1bfb
AM		 7740 const char *sym_name;
7741 if (h != NULL)
7742 sym_name = h->root.root.string;
7743 else
26c61ae5
L		 7744 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7745 sym_sec);
411e1bfb 7746
1e2f5b6e 7747 (*_bfd_error_handler)
d003868e
AM		 7748 (_("%B: undefined sym `%s' in .opd section"),
7749 ibfd, sym_name);
51aecdc5 7750 broken = TRUE;
1e2f5b6e
AM		 7751 break;
7752 }
7753
51020317
AM		 7754 /* opd entries are always for functions defined in the
7755 current input bfd. If the symbol isn't defined in the
7756 input bfd, then we won't be using the function in this
7757 bfd; It must be defined in a linkonce section in another
7758 bfd, or is weak. It's also possible that we are
7759 discarding the function due to a linker script /DISCARD/,
7760 which we test for via the output_section. */
7761 if (sym_sec->owner != ibfd
7762 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7763 need_edit = TRUE;
1e2f5b6e 7764
50bc7936 7765 rel += 2;
51aecdc5
AM		 7766 if (rel + 1 == relend
7767 || (rel + 2 < relend
7768 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7769 ++rel;
7770
7771 if (rel == relend)
3f764659
JJ		 7772 {
7773 if (sec->size == offset + 24)
7774 {
7775 need_pad = NULL;
7776 break;
7777 }
51aecdc5 7778 if (sec->size == offset + 16)
3f764659
JJ		 7779 {
7780 cnt_16b++;
7781 break;
7782 }
7783 goto broken_opd;
7784 }
3f764659
JJ		 7785 else if (rel + 1 < relend
7786 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7787 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7788 {
51aecdc5
AM		 7789 if (rel[0].r_offset == offset + 16)
7790 cnt_16b++;
7791 else if (rel[0].r_offset != offset + 24)
7792 goto broken_opd;
3f764659
JJ		 7793 }
7794 else
7795 goto broken_opd;
1e2f5b6e
AM		 7796 }
7797
e7d1c40c 7798 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
3f764659 7799
51aecdc5 7800 if (!broken && (need_edit || add_aux_fields))
1e2f5b6e
AM		 7801 {
7802 Elf_Internal_Rela *write_rel;
d4730f92 7803 Elf_Internal_Shdr *rel_hdr;
1e2f5b6e 7804 bfd_byte *rptr, *wptr;
983bddc8 7805 bfd_byte *new_contents;
74f0fb50
AM		 7806 bfd_size_type amt;
7807
983bddc8 7808 new_contents = NULL;
51aecdc5 7809 amt = OPD_NDX (sec->size) * sizeof (long);
74f0fb50 7810 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 7811 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM		 7812 if (opd->adjust == NULL)
7813 return FALSE;
7814 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM		 7815
7816 /* This seems a waste of time as input .opd sections are all
7817 zeros as generated by gcc, but I suppose there's no reason
7818 this will always be so. We might start putting something in
7819 the third word of .opd entries. */
7820 if ((sec->flags & SEC_IN_MEMORY) == 0)
7821 {
eea6121a
AM		 7822 bfd_byte *loc;
7823 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 7824 {
eea6121a
AM		 7825 if (loc != NULL)
7826 free (loc);
50bc7936 7827 error_ret:
6cdc0ccc
AM		 7828 if (local_syms != NULL
7829 && symtab_hdr->contents != (unsigned char *) local_syms)
7830 free (local_syms);
6cdc0ccc
AM		 7831 if (elf_section_data (sec)->relocs != relstart)
7832 free (relstart);
b34976b6 7833 return FALSE;
6cdc0ccc 7834 }
1e2f5b6e
AM		 7835 sec->contents = loc;
7836 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7837 }
7838
7839 elf_section_data (sec)->relocs = relstart;
7840
3f764659 7841 new_contents = sec->contents;
3f764659
JJ		 7842 if (add_aux_fields)
7843 {
7844 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7845 if (new_contents == NULL)
7846 return FALSE;
51aecdc5 7847 need_pad = NULL;
3f764659 7848 }
b4f4e59f
AM		 7849 wptr = new_contents;
7850 rptr = sec->contents;
1e2f5b6e 7851 write_rel = relstart;
51aecdc5 7852 for (rel = relstart; rel < relend; )
1e2f5b6e 7853 {
50bc7936
AM		 7854 unsigned long r_symndx;
7855 asection *sym_sec;
7856 struct elf_link_hash_entry *h;
51aecdc5 7857 struct ppc_link_hash_entry *fdh = NULL;
50bc7936 7858 Elf_Internal_Sym *sym;
51aecdc5
AM		 7859 long opd_ent_size;
7860 Elf_Internal_Rela *next_rel;
7861 bfd_boolean skip;
50bc7936
AM		 7862
7863 r_symndx = ELF64_R_SYM (rel->r_info);
7864 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 7865 r_symndx, ibfd))
50bc7936
AM		 7866 goto error_ret;
7867
51aecdc5
AM		 7868 next_rel = rel + 2;
7869 if (next_rel + 1 == relend
7870 || (next_rel + 2 < relend
7871 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
7872 ++next_rel;
7873
7874 /* See if the .opd entry is full 24 byte or
7875 16 byte (with fd_aux entry overlapped with next
7876 fd_func). */
7877 opd_ent_size = 24;
7878 if (next_rel == relend)
1e2f5b6e 7879 {
51aecdc5 7880 if (sec->size == rel->r_offset + 16)
3f764659 7881 opd_ent_size = 16;
51aecdc5
AM		 7882 }
7883 else if (next_rel->r_offset == rel->r_offset + 16)
7884 opd_ent_size = 16;
3f764659 7885
51aecdc5
AM		 7886 if (h != NULL
7887 && h->root.root.string[0] == '.')
7888 {
7889 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
7890 if (fdh != NULL
7891 && fdh->elf.root.type != bfd_link_hash_defined
7892 && fdh->elf.root.type != bfd_link_hash_defweak)
7893 fdh = NULL;
7894 }
1e2f5b6e 7895
51aecdc5
AM		 7896 skip = (sym_sec->owner != ibfd
7897 || sym_sec->output_section == bfd_abs_section_ptr);
7898 if (skip)
7899 {
7900 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7 7901 {
51aecdc5
AM		 7902 /* Arrange for the function descriptor sym
7903 to be dropped. */
7904 fdh->elf.root.u.def.value = 0;
7905 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 7906 }
51aecdc5 7907 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
1e2f5b6e 7908
0e1862bb 7909 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
51aecdc5
AM		 7910 rel = next_rel;
7911 else
7912 while (1)
7913 {
7914 if (!dec_dynrel_count (rel->r_info, sec, info,
7915 NULL, h, sym))
7916 goto error_ret;
754021d0 7917
51aecdc5
AM		 7918 if (++rel == next_rel)
7919 break;
1e2f5b6e 7920
51aecdc5
AM		 7921 r_symndx = ELF64_R_SYM (rel->r_info);
7922 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7923 r_symndx, ibfd))
7924 goto error_ret;
7925 }
50bc7936
AM		 7926 }
7927 else
1e2f5b6e 7928 {
51aecdc5
AM		 7929 /* We'll be keeping this opd entry. */
7930 long adjust;
7931
7932 if (fdh != NULL)
7933 {
7934 /* Redefine the function descriptor symbol to
7935 this location in the opd section. It is
7936 necessary to update the value here rather
7937 than using an array of adjustments as we do
7938 for local symbols, because various places
7939 in the generic ELF code use the value
7940 stored in u.def.value. */
7941 fdh->elf.root.u.def.value = wptr - new_contents;
7942 fdh->adjust_done = 1;
7943 }
7944
7945 /* Local syms are a bit tricky. We could
7946 tweak them as they can be cached, but
7947 we'd need to look through the local syms
7948 for the function descriptor sym which we
7949 don't have at the moment. So keep an
7950 array of adjustments. */
7951 adjust = (wptr - new_contents) - (rptr - sec->contents);
7952 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
7953
7954 if (wptr != rptr)
7955 memcpy (wptr, rptr, opd_ent_size);
7956 wptr += opd_ent_size;
7957 if (add_aux_fields && opd_ent_size == 16)
7958 {
7959 memset (wptr, '\0', 8);
7960 wptr += 8;
7961 }
7962
50bc7936 7963 /* We need to adjust any reloc offsets to point to the
51aecdc5
AM		 7964 new opd entries. */
7965 for ( ; rel != next_rel; ++rel)
7966 {
7967 rel->r_offset += adjust;
7968 if (write_rel != rel)
7969 memcpy (write_rel, rel, sizeof (*rel));
7970 ++write_rel;
7971 }
1e2f5b6e 7972 }
51aecdc5
AM		 7973
7974 rptr += opd_ent_size;
1e2f5b6e
AM		 7975 }
7976
3f764659 7977 sec->size = wptr - new_contents;
1e2f5b6e 7978 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 7979 if (add_aux_fields)
7980 {
7981 free (sec->contents);
7982 sec->contents = new_contents;
7983 }
7984
05bf9422 7985 /* Fudge the header size too, as this is used later in
cdcf6e38 7986 elf_bfd_final_link if we are emitting relocs. */
d4730f92
BS		 7987 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7988 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
754021d0 7989 some_edited = TRUE;
1e2f5b6e 7990 }
6cdc0ccc 7991 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 7992 free (relstart);
6cdc0ccc 7993
411e1bfb
AM		 7994 if (local_syms != NULL
7995 && symtab_hdr->contents != (unsigned char *) local_syms)
7996 {
7997 if (!info->keep_memory)
7998 free (local_syms);
7999 else
8000 symtab_hdr->contents = (unsigned char *) local_syms;
8001 }
8002 }
8003
754021d0
AM		 8004 if (some_edited)
8005 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8006
3f764659
JJ		 8007 /* If we are doing a final link and the last .opd entry is just 16 byte
8008 long, add a 8 byte padding after it. */
0e1862bb 8009 if (need_pad != NULL && !bfd_link_relocatable (info))
3f764659
JJ		 8010 {
8011 bfd_byte *p;
8012
8013 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8014 {
8015 BFD_ASSERT (need_pad->size > 0);
8016
8017 p = bfd_malloc (need_pad->size + 8);
8018 if (p == NULL)
8019 return FALSE;
699733f6 8020
3f764659
JJ		 8021 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8022 p, 0, need_pad->size))
8023 return FALSE;
8024
8025 need_pad->contents = p;
8026 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8027 }
8028 else
8029 {
8030 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8031 if (p == NULL)
8032 return FALSE;
8033
8034 need_pad->contents = p;
8035 }
8036
8037 memset (need_pad->contents + need_pad->size, 0, 8);
8038 need_pad->size += 8;
8039 }
8040
411e1bfb
AM		 8041 return TRUE;
8042}
8043
e1918d23 8044/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 8045
e1918d23 8046asection *
e7d1c40c 8047ppc64_elf_tls_setup (struct bfd_link_info *info)
411e1bfb 8048{
411e1bfb
AM		 8049 struct ppc_link_hash_table *htab;
8050
411e1bfb 8051 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8052 if (htab == NULL)
8053 return NULL;
8054
ee67d69a
AM		 8055 if (abiversion (info->output_bfd) == 1)
8056 htab->opd_abi = 1;
8057
e7d1c40c 8058 if (htab->params->no_multi_toc)
33c0ec9d
AM		 8059 htab->do_multi_toc = 0;
8060 else if (!htab->do_multi_toc)
e7d1c40c 8061 htab->params->no_multi_toc = 1;
33c0ec9d 8062
3a71aa26
AM		 8063 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8064 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8065 FALSE, FALSE, TRUE));
a7f2871e
AM		 8066 /* Move dynamic linking info to the function descriptor sym. */
8067 if (htab->tls_get_addr != NULL)
8068 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM		 8069 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8070 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8071 FALSE, FALSE, TRUE));
e7d1c40c 8072 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM		 8073 {
8074 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8075
8076 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8077 FALSE, FALSE, TRUE);
8078 if (opt != NULL)
8079 func_desc_adjust (opt, info);
8080 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8081 FALSE, FALSE, TRUE);
8082 if (opt_fd != NULL
8083 && (opt_fd->root.type == bfd_link_hash_defined
8084 || opt_fd->root.type == bfd_link_hash_defweak))
8085 {
8086 /* If glibc supports an optimized __tls_get_addr call stub,
8087 signalled by the presence of __tls_get_addr_opt, and we'll
8088 be calling __tls_get_addr via a plt call stub, then
8089 make __tls_get_addr point to __tls_get_addr_opt. */
8090 tga_fd = &htab->tls_get_addr_fd->elf;
8091 if (htab->elf.dynamic_sections_created
8092 && tga_fd != NULL
8093 && (tga_fd->type == STT_FUNC
8094 || tga_fd->needs_plt)
8095 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8096 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8097 && tga_fd->root.type == bfd_link_hash_undefweak)))
8098 {
8099 struct plt_entry *ent;
8100
8101 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8102 if (ent->plt.refcount > 0)
8103 break;
8104 if (ent != NULL)
8105 {
8106 tga_fd->root.type = bfd_link_hash_indirect;
8107 tga_fd->root.u.i.link = &opt_fd->root;
8108 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8109 if (opt_fd->dynindx != -1)
8110 {
8111 /* Use __tls_get_addr_opt in dynamic relocations. */
8112 opt_fd->dynindx = -1;
8113 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8114 opt_fd->dynstr_index);
8115 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
854b41e7 8116 return NULL;
a7f2871e
AM		 8117 }
8118 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8119 tga = &htab->tls_get_addr->elf;
8120 if (opt != NULL && tga != NULL)
8121 {
8122 tga->root.type = bfd_link_hash_indirect;
8123 tga->root.u.i.link = &opt->root;
8124 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8125 _bfd_elf_link_hash_hide_symbol (info, opt,
8126 tga->forced_local);
8127 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8128 }
8129 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8130 htab->tls_get_addr_fd->is_func_descriptor = 1;
8131 if (htab->tls_get_addr != NULL)
8132 {
8133 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8134 htab->tls_get_addr->is_func = 1;
8135 }
8136 }
8137 }
8138 }
8139 else
e7d1c40c 8140 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 8141 }
33c0ec9d 8142 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 8143}
8387904d 8144
3a71aa26
AM		 8145/* Return TRUE iff REL is a branch reloc with a global symbol matching
8146 HASH1 or HASH2. */
8387904d 8147
3a71aa26
AM		 8148static bfd_boolean
8149branch_reloc_hash_match (const bfd *ibfd,
8150 const Elf_Internal_Rela *rel,
8151 const struct ppc_link_hash_entry *hash1,
8152 const struct ppc_link_hash_entry *hash2)
8153{
8154 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8155 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8156 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8157
e054468f 8158 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 8159 {
3a71aa26
AM		 8160 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8161 struct elf_link_hash_entry *h;
8387904d 8162
3a71aa26 8163 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 8164 h = elf_follow_link (h);
3a71aa26
AM		 8165 if (h == &hash1->elf || h == &hash2->elf)
8166 return TRUE;
a48ebf4d 8167 }
3a71aa26 8168 return FALSE;
951fd09b 8169}
411e1bfb 8170
951fd09b
AM		 8171/* Run through all the TLS relocs looking for optimization
8172 opportunities. The linker has been hacked (see ppc64elf.em) to do
8173 a preliminary section layout so that we know the TLS segment
8174 offsets. We can't optimize earlier because some optimizations need
8175 to know the tp offset, and we need to optimize before allocating
8176 dynamic relocations. */
8177
8178bfd_boolean
33c0ec9d 8179ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM		 8180{
8181 bfd *ibfd;
8182 asection *sec;
8183 struct ppc_link_hash_table *htab;
663a1470 8184 unsigned char *toc_ref;
102890f0 8185 int pass;
951fd09b 8186
3cbc1e5e 8187 if (!bfd_link_executable (info))
411e1bfb
AM		 8188 return TRUE;
8189
951fd09b 8190 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8191 if (htab == NULL)
8192 return FALSE;
8193
663a1470
AM		 8194 /* Make two passes over the relocs. On the first pass, mark toc
8195 entries involved with tls relocs, and check that tls relocs
8196 involved in setting up a tls_get_addr call are indeed followed by
8197 such a call. If they are not, we can't do any tls optimization.
8198 On the second pass twiddle tls_mask flags to notify
8199 relocate_section that optimization can be done, and adjust got
8200 and plt refcounts. */
8201 toc_ref = NULL;
8202 for (pass = 0; pass < 2; ++pass)
c72f2fb2 8203 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
663a1470
AM		 8204 {
8205 Elf_Internal_Sym *locsyms = NULL;
8206 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8207
102890f0
AM		 8208 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8209 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8210 {
8211 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 8212 bfd_boolean found_tls_get_addr_arg = 0;
411e1bfb 8213
102890f0
AM		 8214 /* Read the relocations. */
8215 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8216 info->keep_memory);
8217 if (relstart == NULL)
2915c55b
JK		 8218 {
8219 free (toc_ref);
8220 return FALSE;
8221 }
411e1bfb 8222
102890f0
AM		 8223 relend = relstart + sec->reloc_count;
8224 for (rel = relstart; rel < relend; rel++)
8225 {
8226 enum elf_ppc64_reloc_type r_type;
8227 unsigned long r_symndx;
8228 struct elf_link_hash_entry *h;
8229 Elf_Internal_Sym *sym;
8230 asection *sym_sec;
f961d9dd
AM		 8231 unsigned char *tls_mask;
8232 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM		 8233 bfd_vma value;
8234 bfd_boolean ok_tprel, is_local;
8235 long toc_ref_index = 0;
8236 int expecting_tls_get_addr = 0;
663a1470 8237 bfd_boolean ret = FALSE;
411e1bfb 8238
102890f0
AM		 8239 r_symndx = ELF64_R_SYM (rel->r_info);
8240 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8241 r_symndx, ibfd))
8242 {
8243 err_free_rel:
8244 if (elf_section_data (sec)->relocs != relstart)
8245 free (relstart);
8246 if (toc_ref != NULL)
8247 free (toc_ref);
8248 if (locsyms != NULL
0ffa91dd 8249 && (elf_symtab_hdr (ibfd).contents
102890f0
AM		 8250 != (unsigned char *) locsyms))
8251 free (locsyms);
663a1470 8252 return ret;
102890f0 8253 }
411e1bfb 8254
102890f0
AM		 8255 if (h != NULL)
8256 {
766bc656
AM		 8257 if (h->root.type == bfd_link_hash_defined
8258 || h->root.type == bfd_link_hash_defweak)
8259 value = h->root.u.def.value;
8260 else if (h->root.type == bfd_link_hash_undefweak)
8261 value = 0;
8262 else
663a1470
AM		 8263 {
8264 found_tls_get_addr_arg = 0;
8265 continue;
8266 }
102890f0
AM		 8267 }
8268 else
8269 /* Symbols referenced by TLS relocs must be of type
8270 STT_TLS. So no need for .opd local sym adjust. */
8271 value = sym->st_value;
8272
8273 ok_tprel = FALSE;
8274 is_local = FALSE;
8275 if (h == NULL
8276 || !h->def_dynamic)
8277 {
8278 is_local = TRUE;
766bc656
AM		 8279 if (h != NULL
8280 && h->root.type == bfd_link_hash_undefweak)
8281 ok_tprel = TRUE;
8282 else
8283 {
8284 value += sym_sec->output_offset;
8285 value += sym_sec->output_section->vma;
8286 value -= htab->elf.tls_sec->vma;
8287 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8288 < (bfd_vma) 1 << 32);
8289 }
102890f0 8290 }
951fd09b 8291
102890f0 8292 r_type = ELF64_R_TYPE (rel->r_info);
663a1470
AM		 8293 /* If this section has old-style __tls_get_addr calls
8294 without marker relocs, then check that each
8295 __tls_get_addr call reloc is preceded by a reloc
8296 that conceivably belongs to the __tls_get_addr arg
8297 setup insn. If we don't find matching arg setup
8298 relocs, don't do any tls optimization. */
8299 if (pass == 0
8300 && sec->has_tls_get_addr_call
8301 && h != NULL
8302 && (h == &htab->tls_get_addr->elf
8303 || h == &htab->tls_get_addr_fd->elf)
8304 && !found_tls_get_addr_arg
8305 && is_branch_reloc (r_type))
8306 {
25f53a85 8307 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
663a1470
AM		 8308 "TLS optimization disabled\n"),
8309 ibfd, sec, rel->r_offset);
8310 ret = TRUE;
8311 goto err_free_rel;
8312 }
8313
8314 found_tls_get_addr_arg = 0;
102890f0
AM		 8315 switch (r_type)
8316 {
8317 case R_PPC64_GOT_TLSLD16:
8318 case R_PPC64_GOT_TLSLD16_LO:
8319 expecting_tls_get_addr = 1;
663a1470 8320 found_tls_get_addr_arg = 1;
102890f0
AM		 8321 /* Fall thru */
8322
8323 case R_PPC64_GOT_TLSLD16_HI:
8324 case R_PPC64_GOT_TLSLD16_HA:
8325 /* These relocs should never be against a symbol
8326 defined in a shared lib. Leave them alone if
8327 that turns out to be the case. */
8328 if (!is_local)
8329 continue;
411e1bfb 8330
102890f0 8331 /* LD -> LE */
411e1bfb 8332 tls_set = 0;
102890f0
AM		 8333 tls_clear = TLS_LD;
8334 tls_type = TLS_TLS | TLS_LD;
8335 break;
411e1bfb 8336
102890f0
AM		 8337 case R_PPC64_GOT_TLSGD16:
8338 case R_PPC64_GOT_TLSGD16_LO:
8339 expecting_tls_get_addr = 1;
663a1470 8340 found_tls_get_addr_arg = 1;
102890f0
AM		 8341 /* Fall thru */
8342
8343 case R_PPC64_GOT_TLSGD16_HI:
8344 case R_PPC64_GOT_TLSGD16_HA:
8345 if (ok_tprel)
8346 /* GD -> LE */
411e1bfb 8347 tls_set = 0;
102890f0
AM		 8348 else
8349 /* GD -> IE */
8350 tls_set = TLS_TLS | TLS_TPRELGD;
8351 tls_clear = TLS_GD;
8352 tls_type = TLS_TLS | TLS_GD;
8353 break;
8354
8355 case R_PPC64_GOT_TPREL16_DS:
8356 case R_PPC64_GOT_TPREL16_LO_DS:
8357 case R_PPC64_GOT_TPREL16_HI:
8358 case R_PPC64_GOT_TPREL16_HA:
8359 if (ok_tprel)
8360 {
8361 /* IE -> LE */
8362 tls_set = 0;
8363 tls_clear = TLS_TPREL;
8364 tls_type = TLS_TLS | TLS_TPREL;
8365 break;
8366 }
411e1bfb
AM		 8367 continue;
8368
727fc41e
AM		 8369 case R_PPC64_TLSGD:
8370 case R_PPC64_TLSLD:
663a1470
AM		 8371 found_tls_get_addr_arg = 1;
8372 /* Fall thru */
8373
8374 case R_PPC64_TLS:
8375 case R_PPC64_TOC16:
8376 case R_PPC64_TOC16_LO:
102890f0
AM		 8377 if (sym_sec == NULL || sym_sec != toc)
8378 continue;
8379
8380 /* Mark this toc entry as referenced by a TLS
8381 code sequence. We can do that now in the
8382 case of R_PPC64_TLS, and after checking for
8383 tls_get_addr for the TOC16 relocs. */
8384 if (toc_ref == NULL)
663a1470
AM		 8385 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8386 if (toc_ref == NULL)
8387 goto err_free_rel;
8388
102890f0
AM		 8389 if (h != NULL)
8390 value = h->root.u.def.value;
8391 else
8392 value = sym->st_value;
8393 value += rel->r_addend;
73242275
AM		 8394 if (value % 8 != 0)
8395 continue;
8396 BFD_ASSERT (value < toc->size
8397 && toc->output_offset % 8 == 0);
663a1470 8398 toc_ref_index = (value + toc->output_offset) / 8;
727fc41e
AM		 8399 if (r_type == R_PPC64_TLS
8400 || r_type == R_PPC64_TLSGD
8401 || r_type == R_PPC64_TLSLD)
102890f0
AM		 8402 {
8403 toc_ref[toc_ref_index] = 1;
8404 continue;
8405 }
8406
8407 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8408 continue;
8409
8410 tls_set = 0;
8411 tls_clear = 0;
8412 expecting_tls_get_addr = 2;
8413 break;
8414
8415 case R_PPC64_TPREL64:
8416 if (pass == 0
8417 || sec != toc
8418 || toc_ref == NULL
663a1470 8419 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8420 continue;
8421 if (ok_tprel)
8422 {
8423 /* IE -> LE */
8424 tls_set = TLS_EXPLICIT;
8425 tls_clear = TLS_TPREL;
8426 break;
8427 }
8428 continue;
8429
8430 case R_PPC64_DTPMOD64:
8431 if (pass == 0
8432 || sec != toc
8433 || toc_ref == NULL
663a1470 8434 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8435 continue;
8436 if (rel + 1 < relend
8437 && (rel[1].r_info
8438 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8439 && rel[1].r_offset == rel->r_offset + 8)
8440 {
8441 if (ok_tprel)
8442 /* GD -> LE */
8443 tls_set = TLS_EXPLICIT | TLS_GD;
8444 else
8445 /* GD -> IE */
8446 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8447 tls_clear = TLS_GD;
8448 }
8449 else
8450 {
8451 if (!is_local)
8452 continue;
8453
8454 /* LD -> LE */
8455 tls_set = TLS_EXPLICIT;
8456 tls_clear = TLS_LD;
8457 }
8458 break;
8459
8460 default:
8461 continue;
8462 }
8463
8464 if (pass == 0)
8465 {
727fc41e
AM		 8466 if (!expecting_tls_get_addr
8467 || !sec->has_tls_get_addr_call)
102890f0
AM		 8468 continue;
8469
3a71aa26
AM		 8470 if (rel + 1 < relend
8471 && branch_reloc_hash_match (ibfd, rel + 1,
8472 htab->tls_get_addr,
8473 htab->tls_get_addr_fd))
102890f0 8474 {
3a71aa26 8475 if (expecting_tls_get_addr == 2)
102890f0 8476 {
3a71aa26 8477 /* Check for toc tls entries. */
f961d9dd 8478 unsigned char *toc_tls;
3a71aa26
AM		 8479 int retval;
8480
8481 retval = get_tls_mask (&toc_tls, NULL, NULL,
8482 &locsyms,
8483 rel, ibfd);
8484 if (retval == 0)
8485 goto err_free_rel;
663a1470
AM		 8486 if (toc_tls != NULL)
8487 {
8488 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8489 found_tls_get_addr_arg = 1;
8490 if (retval > 1)
8491 toc_ref[toc_ref_index] = 1;
8492 }
102890f0 8493 }
3a71aa26 8494 continue;
102890f0
AM		 8495 }
8496
8497 if (expecting_tls_get_addr != 1)
8498 continue;
8499
8500 /* Uh oh, we didn't find the expected call. We
8501 could just mark this symbol to exclude it
8502 from tls optimization but it's safer to skip
663a1470 8503 the entire optimization. */
25f53a85 8504 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM		 8505 "TLS optimization disabled\n"),
8506 ibfd, sec, rel->r_offset);
8507 ret = TRUE;
8508 goto err_free_rel;
102890f0
AM		 8509 }
8510
85f7a9cb 8511 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM		 8512 {
8513 struct plt_entry *ent;
8514 for (ent = htab->tls_get_addr->elf.plt.plist;
8515 ent != NULL;
8516 ent = ent->next)
8517 if (ent->addend == 0)
411e1bfb 8518 {
102890f0 8519 if (ent->plt.refcount > 0)
30038c59 8520 {
102890f0
AM		 8521 ent->plt.refcount -= 1;
8522 expecting_tls_get_addr = 0;
30038c59 8523 }
102890f0 8524 break;
411e1bfb 8525 }
102890f0 8526 }
411e1bfb 8527
85f7a9cb 8528 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM		 8529 {
8530 struct plt_entry *ent;
8531 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8532 ent != NULL;
8533 ent = ent->next)
8534 if (ent->addend == 0)
411e1bfb 8535 {
102890f0
AM		 8536 if (ent->plt.refcount > 0)
8537 ent->plt.refcount -= 1;
8538 break;
411e1bfb 8539 }
102890f0 8540 }
411e1bfb 8541
102890f0 8542 if (tls_clear == 0)
30038c59
AM		 8543 continue;
8544
102890f0
AM		 8545 if ((tls_set & TLS_EXPLICIT) == 0)
8546 {
8547 struct got_entry *ent;
411e1bfb 8548
102890f0
AM		 8549 /* Adjust got entry for this reloc. */
8550 if (h != NULL)
8551 ent = h->got.glist;
8552 else
8553 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 8554
102890f0
AM		 8555 for (; ent != NULL; ent = ent->next)
8556 if (ent->addend == rel->r_addend
8557 && ent->owner == ibfd
8558 && ent->tls_type == tls_type)
8559 break;
8560 if (ent == NULL)
8561 abort ();
411e1bfb 8562
102890f0
AM		 8563 if (tls_set == 0)
8564 {
8565 /* We managed to get rid of a got entry. */
8566 if (ent->got.refcount > 0)
8567 ent->got.refcount -= 1;
8568 }
8569 }
8570 else
8571 {
8572 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8573 we'll lose one or two dyn relocs. */
8574 if (!dec_dynrel_count (rel->r_info, sec, info,
19e08130 8575 NULL, h, sym))
102890f0 8576 return FALSE;
411e1bfb 8577
102890f0
AM		 8578 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8579 {
8580 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
19e08130 8581 NULL, h, sym))
102890f0
AM		 8582 return FALSE;
8583 }
8584 }
411e1bfb 8585
102890f0
AM		 8586 *tls_mask |= tls_set;
8587 *tls_mask &= ~tls_clear;
8588 }
8c1d1bb8 8589
102890f0
AM		 8590 if (elf_section_data (sec)->relocs != relstart)
8591 free (relstart);
8592 }
411e1bfb 8593
663a1470
AM		 8594 if (locsyms != NULL
8595 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8596 {
8597 if (!info->keep_memory)
8598 free (locsyms);
8599 else
8600 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8601 }
8602 }
411e1bfb 8603
663a1470
AM		 8604 if (toc_ref != NULL)
8605 free (toc_ref);
b34976b6 8606 return TRUE;
1e2f5b6e 8607}
b34976b6 8608
c5614fa4
AM		 8609/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8610 the values of any global symbols in a toc section that has been
8611 edited. Globals in toc sections should be a rarity, so this function
8612 sets a flag if any are found in toc sections other than the one just
8613 edited, so that futher hash table traversals can be avoided. */
8614
8615struct adjust_toc_info
8616{
8617 asection *toc;
8618 unsigned long *skip;
8619 bfd_boolean global_toc_syms;
8620};
8621
ba761f19
AM		 8622enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8623
c5614fa4
AM		 8624static bfd_boolean
8625adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8626{
8627 struct ppc_link_hash_entry *eh;
8628 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
854b41e7 8629 unsigned long i;
c5614fa4 8630
c5614fa4
AM		 8631 if (h->root.type != bfd_link_hash_defined
8632 && h->root.type != bfd_link_hash_defweak)
8633 return TRUE;
8634
8635 eh = (struct ppc_link_hash_entry *) h;
8636 if (eh->adjust_done)
8637 return TRUE;
8638
8639 if (eh->elf.root.u.def.section == toc_inf->toc)
8640 {
854b41e7
AM		 8641 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8642 i = toc_inf->toc->rawsize >> 3;
c5614fa4 8643 else
854b41e7
AM		 8644 i = eh->elf.root.u.def.value >> 3;
8645
ba761f19 8646 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
c5614fa4
AM		 8647 {
8648 (*_bfd_error_handler)
854b41e7
AM		 8649 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8650 do
8651 ++i;
ba761f19 8652 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
854b41e7 8653 eh->elf.root.u.def.value = (bfd_vma) i << 3;
c5614fa4 8654 }
854b41e7
AM		 8655
8656 eh->elf.root.u.def.value -= toc_inf->skip[i];
c5614fa4
AM		 8657 eh->adjust_done = 1;
8658 }
8659 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8660 toc_inf->global_toc_syms = TRUE;
8661
8662 return TRUE;
8663}
8664
560c8763
AM		 8665/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8666
8667static bfd_boolean
8668ok_lo_toc_insn (unsigned int insn)
8669{
8670 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8671 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8672 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8673 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8674 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8675 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8676 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8677 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8678 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8679 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8680 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8681 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8682 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8683 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8684 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8685 && (insn & 3) != 1)
8686 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8687 && ((insn & 3) == 0 || (insn & 3) == 3))
8688 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8689}
8690
c5614fa4
AM		 8691/* Examine all relocs referencing .toc sections in order to remove
8692 unused .toc entries. */
8693
8694bfd_boolean
33c0ec9d 8695ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM		 8696{
8697 bfd *ibfd;
8698 struct adjust_toc_info toc_inf;
67f0cbdb 8699 struct ppc_link_hash_table *htab = ppc_hash_table (info);
c5614fa4 8700
67f0cbdb 8701 htab->do_toc_opt = 1;
c5614fa4 8702 toc_inf.global_toc_syms = TRUE;
c72f2fb2 8703 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
c5614fa4
AM		 8704 {
8705 asection *toc, *sec;
8706 Elf_Internal_Shdr *symtab_hdr;
8707 Elf_Internal_Sym *local_syms;
425b145b 8708 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
c5614fa4
AM		 8709 unsigned long *skip, *drop;
8710 unsigned char *used;
8711 unsigned char *keep, last, some_unused;
8712
854b41e7
AM		 8713 if (!is_ppc64_elf (ibfd))
8714 continue;
8715
c5614fa4
AM		 8716 toc = bfd_get_section_by_name (ibfd, ".toc");
8717 if (toc == NULL
92b7a70f 8718 || toc->size == 0
dbaa2011
AM		 8719 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8720 || discarded_section (toc))
c5614fa4
AM		 8721 continue;
8722
425b145b 8723 toc_relocs = NULL;
c5614fa4 8724 local_syms = NULL;
0ffa91dd 8725 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM		 8726
8727 /* Look at sections dropped from the final link. */
8728 skip = NULL;
8729 relstart = NULL;
8730 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8731 {
8732 if (sec->reloc_count == 0
dbaa2011 8733 || !discarded_section (sec)
c5614fa4
AM		 8734 || get_opd_info (sec)
8735 || (sec->flags & SEC_ALLOC) == 0
8736 || (sec->flags & SEC_DEBUGGING) != 0)
8737 continue;
8738
8739 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8740 if (relstart == NULL)
8741 goto error_ret;
8742
8743 /* Run through the relocs to see which toc entries might be
8744 unused. */
8745 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8746 {
8747 enum elf_ppc64_reloc_type r_type;
8748 unsigned long r_symndx;
8749 asection *sym_sec;
8750 struct elf_link_hash_entry *h;
8751 Elf_Internal_Sym *sym;
8752 bfd_vma val;
8753
8754 r_type = ELF64_R_TYPE (rel->r_info);
8755 switch (r_type)
8756 {
8757 default:
8758 continue;
8759
8760 case R_PPC64_TOC16:
8761 case R_PPC64_TOC16_LO:
8762 case R_PPC64_TOC16_HI:
8763 case R_PPC64_TOC16_HA:
8764 case R_PPC64_TOC16_DS:
8765 case R_PPC64_TOC16_LO_DS:
8766 break;
8767 }
8768
8769 r_symndx = ELF64_R_SYM (rel->r_info);
8770 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8771 r_symndx, ibfd))
8772 goto error_ret;
8773
8774 if (sym_sec != toc)
8775 continue;
8776
8777 if (h != NULL)
8778 val = h->root.u.def.value;
8779 else
8780 val = sym->st_value;
8781 val += rel->r_addend;
8782
8783 if (val >= toc->size)
8784 continue;
8785
8786 /* Anything in the toc ought to be aligned to 8 bytes.
8787 If not, don't mark as unused. */
8788 if (val & 7)
8789 continue;
8790
8791 if (skip == NULL)
8792 {
854b41e7 8793 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
c5614fa4
AM		 8794 if (skip == NULL)
8795 goto error_ret;
8796 }
8797
ba761f19 8798 skip[val >> 3] = ref_from_discarded;
c5614fa4
AM		 8799 }
8800
8801 if (elf_section_data (sec)->relocs != relstart)
8802 free (relstart);
8803 }
8804
ba761f19
AM		 8805 /* For largetoc loads of address constants, we can convert
8806 . addis rx,2,addr@got@ha
8807 . ld ry,addr@got@l(rx)
8808 to
8809 . addis rx,2,addr@toc@ha
8810 . addi ry,rx,addr@toc@l
8811 when addr is within 2G of the toc pointer. This then means
8812 that the word storing "addr" in the toc is no longer needed. */
68ffbac6 8813
ba761f19
AM		 8814 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8815 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8816 && toc->reloc_count != 0)
8817 {
8818 /* Read toc relocs. */
425b145b
AM		 8819 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8820 info->keep_memory);
8821 if (toc_relocs == NULL)
ba761f19
AM		 8822 goto error_ret;
8823
425b145b 8824 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 8825 {
8826 enum elf_ppc64_reloc_type r_type;
8827 unsigned long r_symndx;
8828 asection *sym_sec;
8829 struct elf_link_hash_entry *h;
8830 Elf_Internal_Sym *sym;
8831 bfd_vma val, addr;
8832
8833 r_type = ELF64_R_TYPE (rel->r_info);
8834 if (r_type != R_PPC64_ADDR64)
8835 continue;
8836
8837 r_symndx = ELF64_R_SYM (rel->r_info);
8838 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8839 r_symndx, ibfd))
8840 goto error_ret;
8841
425b145b 8842 if (sym_sec == NULL
dbaa2011 8843 || discarded_section (sym_sec))
425b145b
AM		 8844 continue;
8845
afe397ea 8846 if (!SYMBOL_REFERENCES_LOCAL (info, h))
ba761f19
AM		 8847 continue;
8848
8849 if (h != NULL)
bddc25c9
AM		 8850 {
8851 if (h->type == STT_GNU_IFUNC)
8852 continue;
8853 val = h->root.u.def.value;
8854 }
ba761f19 8855 else
bddc25c9
AM		 8856 {
8857 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8858 continue;
8859 val = sym->st_value;
8860 }
ba761f19
AM		 8861 val += rel->r_addend;
8862 val += sym_sec->output_section->vma + sym_sec->output_offset;
8863
8864 /* We don't yet know the exact toc pointer value, but we
8865 know it will be somewhere in the toc section. Don't
8866 optimize if the difference from any possible toc
8867 pointer is outside [ff..f80008000, 7fff7fff]. */
8868 addr = toc->output_section->vma + TOC_BASE_OFF;
8869 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8870 continue;
8871
8872 addr = toc->output_section->vma + toc->output_section->rawsize;
8873 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8874 continue;
8875
8876 if (skip == NULL)
8877 {
8878 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8879 if (skip == NULL)
8880 goto error_ret;
8881 }
8882
8883 skip[rel->r_offset >> 3]
425b145b 8884 |= can_optimize | ((rel - toc_relocs) << 2);
ba761f19 8885 }
ba761f19
AM		 8886 }
8887
c5614fa4
AM		 8888 if (skip == NULL)
8889 continue;
8890
8891 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8892 if (used == NULL)
8893 {
8894 error_ret:
8895 if (local_syms != NULL
8896 && symtab_hdr->contents != (unsigned char *) local_syms)
8897 free (local_syms);
8898 if (sec != NULL
8899 && relstart != NULL
8900 && elf_section_data (sec)->relocs != relstart)
8901 free (relstart);
425b145b
AM		 8902 if (toc_relocs != NULL
8903 && elf_section_data (toc)->relocs != toc_relocs)
8904 free (toc_relocs);
c5614fa4
AM		 8905 if (skip != NULL)
8906 free (skip);
8907 return FALSE;
8908 }
8909
30038c59
AM		 8910 /* Now check all kept sections that might reference the toc.
8911 Check the toc itself last. */
8912 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8913 : ibfd->sections);
c5614fa4 8914 sec != NULL;
c5614fa4 8915 sec = (sec == toc ? NULL
c5614fa4 8916 : sec->next == NULL ? toc
30038c59 8917 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 8918 : sec->next))
8919 {
8920 int repeat;
8921
8922 if (sec->reloc_count == 0
dbaa2011 8923 || discarded_section (sec)
c5614fa4
AM		 8924 || get_opd_info (sec)
8925 || (sec->flags & SEC_ALLOC) == 0
8926 || (sec->flags & SEC_DEBUGGING) != 0)
8927 continue;
8928
854b41e7
AM		 8929 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8930 info->keep_memory);
c5614fa4 8931 if (relstart == NULL)
2915c55b
JK		 8932 {
8933 free (used);
8934 goto error_ret;
8935 }
c5614fa4
AM		 8936
8937 /* Mark toc entries referenced as used. */
c5614fa4 8938 do
d4f1ee75
AM		 8939 {
8940 repeat = 0;
8941 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8942 {
8943 enum elf_ppc64_reloc_type r_type;
8944 unsigned long r_symndx;
8945 asection *sym_sec;
8946 struct elf_link_hash_entry *h;
8947 Elf_Internal_Sym *sym;
8948 bfd_vma val;
8949 enum {no_check, check_lo, check_ha} insn_check;
98528052 8950
d4f1ee75
AM		 8951 r_type = ELF64_R_TYPE (rel->r_info);
8952 switch (r_type)
8953 {
8954 default:
8955 insn_check = no_check;
8956 break;
98528052 8957
d4f1ee75
AM		 8958 case R_PPC64_GOT_TLSLD16_HA:
8959 case R_PPC64_GOT_TLSGD16_HA:
8960 case R_PPC64_GOT_TPREL16_HA:
8961 case R_PPC64_GOT_DTPREL16_HA:
8962 case R_PPC64_GOT16_HA:
8963 case R_PPC64_TOC16_HA:
8964 insn_check = check_ha;
8965 break;
98528052 8966
d4f1ee75
AM		 8967 case R_PPC64_GOT_TLSLD16_LO:
8968 case R_PPC64_GOT_TLSGD16_LO:
8969 case R_PPC64_GOT_TPREL16_LO_DS:
8970 case R_PPC64_GOT_DTPREL16_LO_DS:
8971 case R_PPC64_GOT16_LO:
8972 case R_PPC64_GOT16_LO_DS:
8973 case R_PPC64_TOC16_LO:
8974 case R_PPC64_TOC16_LO_DS:
8975 insn_check = check_lo;
8976 break;
8977 }
560c8763 8978
d4f1ee75
AM		 8979 if (insn_check != no_check)
8980 {
8981 bfd_vma off = rel->r_offset & ~3;
8982 unsigned char buf[4];
8983 unsigned int insn;
c5614fa4 8984
d4f1ee75
AM		 8985 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8986 {
8987 free (used);
8988 goto error_ret;
8989 }
8990 insn = bfd_get_32 (ibfd, buf);
8991 if (insn_check == check_lo
8992 ? !ok_lo_toc_insn (insn)
8993 : ((insn & ((0x3f << 26) | 0x1f << 16))
8994 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8995 {
8996 char str[12];
8997
8998 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8999 sprintf (str, "%#08x", insn);
9000 info->callbacks->einfo
9001 (_("%P: %H: toc optimization is not supported for"
9002 " %s instruction.\n"),
9003 ibfd, sec, rel->r_offset & ~3, str);
9004 }
9005 }
c5614fa4 9006
d4f1ee75
AM		 9007 switch (r_type)
9008 {
9009 case R_PPC64_TOC16:
9010 case R_PPC64_TOC16_LO:
9011 case R_PPC64_TOC16_HI:
9012 case R_PPC64_TOC16_HA:
9013 case R_PPC64_TOC16_DS:
9014 case R_PPC64_TOC16_LO_DS:
9015 /* In case we're taking addresses of toc entries. */
9016 case R_PPC64_ADDR64:
9017 break;
c5614fa4 9018
d4f1ee75
AM		 9019 default:
9020 continue;
9021 }
c5614fa4 9022
d4f1ee75
AM		 9023 r_symndx = ELF64_R_SYM (rel->r_info);
9024 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9025 r_symndx, ibfd))
9026 {
9027 free (used);
9028 goto error_ret;
9029 }
c5614fa4 9030
d4f1ee75
AM		 9031 if (sym_sec != toc)
9032 continue;
c5614fa4 9033
d4f1ee75
AM		 9034 if (h != NULL)
9035 val = h->root.u.def.value;
9036 else
9037 val = sym->st_value;
9038 val += rel->r_addend;
ba761f19 9039
d4f1ee75
AM		 9040 if (val >= toc->size)
9041 continue;
ba761f19 9042
d4f1ee75
AM		 9043 if ((skip[val >> 3] & can_optimize) != 0)
9044 {
9045 bfd_vma off;
9046 unsigned char opc;
9047
9048 switch (r_type)
9049 {
9050 case R_PPC64_TOC16_HA:
ba761f19 9051 break;
ba761f19 9052
d4f1ee75
AM		 9053 case R_PPC64_TOC16_LO_DS:
9054 off = rel->r_offset;
9055 off += (bfd_big_endian (ibfd) ? -2 : 3);
9056 if (!bfd_get_section_contents (ibfd, sec, &opc,
9057 off, 1))
9058 {
9059 free (used);
9060 goto error_ret;
9061 }
9062 if ((opc & (0x3f << 2)) == (58u << 2))
9063 break;
9064 /* Fall thru */
ba761f19 9065
d4f1ee75
AM		 9066 default:
9067 /* Wrong sort of reloc, or not a ld. We may
9068 as well clear ref_from_discarded too. */
9069 skip[val >> 3] = 0;
9070 }
9071 }
9072
9073 if (sec != toc)
9074 used[val >> 3] = 1;
9075 /* For the toc section, we only mark as used if this
9076 entry itself isn't unused. */
9077 else if ((used[rel->r_offset >> 3]
9078 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9079 && !used[val >> 3])
9080 {
9081 /* Do all the relocs again, to catch reference
9082 chains. */
9083 repeat = 1;
9084 used[val >> 3] = 1;
9085 }
9086 }
9087 }
c5614fa4 9088 while (repeat);
854b41e7
AM		 9089
9090 if (elf_section_data (sec)->relocs != relstart)
9091 free (relstart);
c5614fa4
AM		 9092 }
9093
9094 /* Merge the used and skip arrays. Assume that TOC
9095 doublewords not appearing as either used or unused belong
9096 to to an entry more than one doubleword in size. */
9097 for (drop = skip, keep = used, last = 0, some_unused = 0;
9098 drop < skip + (toc->size + 7) / 8;
9099 ++drop, ++keep)
9100 {
9101 if (*keep)
9102 {
ba761f19
AM		 9103 *drop &= ~ref_from_discarded;
9104 if ((*drop & can_optimize) != 0)
9105 some_unused = 1;
c5614fa4
AM		 9106 last = 0;
9107 }
b140b010 9108 else if ((*drop & ref_from_discarded) != 0)
c5614fa4
AM		 9109 {
9110 some_unused = 1;
ba761f19 9111 last = ref_from_discarded;
c5614fa4
AM		 9112 }
9113 else
9114 *drop = last;
9115 }
9116
9117 free (used);
9118
9119 if (some_unused)
9120 {
9121 bfd_byte *contents, *src;
9122 unsigned long off;
d62b3684 9123 Elf_Internal_Sym *sym;
ba761f19 9124 bfd_boolean local_toc_syms = FALSE;
c5614fa4
AM		 9125
9126 /* Shuffle the toc contents, and at the same time convert the
9127 skip array from booleans into offsets. */
9128 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9129 goto error_ret;
9130
9131 elf_section_data (toc)->this_hdr.contents = contents;
9132
9133 for (src = contents, off = 0, drop = skip;
9134 src < contents + toc->size;
9135 src += 8, ++drop)
9136 {
ba761f19
AM		 9137 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9138 off += 8;
c5614fa4
AM		 9139 else if (off != 0)
9140 {
9141 *drop = off;
9142 memcpy (src - off, src, 8);
9143 }
9144 }
854b41e7 9145 *drop = off;
c5614fa4
AM		 9146 toc->rawsize = toc->size;
9147 toc->size = src - contents - off;
9148
ba761f19
AM		 9149 /* Adjust addends for relocs against the toc section sym,
9150 and optimize any accesses we can. */
c5614fa4
AM		 9151 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9152 {
9153 if (sec->reloc_count == 0
dbaa2011 9154 || discarded_section (sec))
c5614fa4
AM		 9155 continue;
9156
9157 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
854b41e7 9158 info->keep_memory);
c5614fa4
AM		 9159 if (relstart == NULL)
9160 goto error_ret;
9161
9162 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9163 {
9164 enum elf_ppc64_reloc_type r_type;
9165 unsigned long r_symndx;
9166 asection *sym_sec;
9167 struct elf_link_hash_entry *h;
854b41e7 9168 bfd_vma val;
c5614fa4
AM		 9169
9170 r_type = ELF64_R_TYPE (rel->r_info);
9171 switch (r_type)
9172 {
9173 default:
9174 continue;
9175
9176 case R_PPC64_TOC16:
9177 case R_PPC64_TOC16_LO:
9178 case R_PPC64_TOC16_HI:
9179 case R_PPC64_TOC16_HA:
9180 case R_PPC64_TOC16_DS:
9181 case R_PPC64_TOC16_LO_DS:
9182 case R_PPC64_ADDR64:
9183 break;
9184 }
9185
9186 r_symndx = ELF64_R_SYM (rel->r_info);
9187 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9188 r_symndx, ibfd))
9189 goto error_ret;
9190
ba761f19 9191 if (sym_sec != toc)
c5614fa4
AM		 9192 continue;
9193
ba761f19
AM		 9194 if (h != NULL)
9195 val = h->root.u.def.value;
9196 else
9197 {
9198 val = sym->st_value;
9199 if (val != 0)
9200 local_toc_syms = TRUE;
9201 }
9202
9203 val += rel->r_addend;
854b41e7
AM		 9204
9205 if (val > toc->rawsize)
9206 val = toc->rawsize;
ba761f19
AM		 9207 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9208 continue;
9209 else if ((skip[val >> 3] & can_optimize) != 0)
9210 {
9211 Elf_Internal_Rela *tocrel
425b145b 9212 = toc_relocs + (skip[val >> 3] >> 2);
ba761f19
AM		 9213 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9214
9215 switch (r_type)
9216 {
9217 case R_PPC64_TOC16_HA:
9218 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9219 break;
9220
9221 case R_PPC64_TOC16_LO_DS:
9222 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9223 break;
9224
9225 default:
28942f62
AM		 9226 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9227 ppc_howto_init ();
b140b010 9228 info->callbacks->einfo
bc30df16 9229 (_("%P: %H: %s references "
b140b010
AM		 9230 "optimized away TOC entry\n"),
9231 ibfd, sec, rel->r_offset,
9232 ppc64_elf_howto_table[r_type]->name);
9233 bfd_set_error (bfd_error_bad_value);
9234 goto error_ret;
ba761f19
AM		 9235 }
9236 rel->r_addend = tocrel->r_addend;
9237 elf_section_data (sec)->relocs = relstart;
9238 continue;
9239 }
9240
9241 if (h != NULL || sym->st_value != 0)
9242 continue;
854b41e7
AM		 9243
9244 rel->r_addend -= skip[val >> 3];
9245 elf_section_data (sec)->relocs = relstart;
c5614fa4 9246 }
854b41e7
AM		 9247
9248 if (elf_section_data (sec)->relocs != relstart)
9249 free (relstart);
c5614fa4
AM		 9250 }
9251
9252 /* We shouldn't have local or global symbols defined in the TOC,
9253 but handle them anyway. */
df22d223
AM		 9254 if (local_syms != NULL)
9255 for (sym = local_syms;
9256 sym < local_syms + symtab_hdr->sh_info;
9257 ++sym)
9258 if (sym->st_value != 0
9259 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9260 {
9261 unsigned long i;
854b41e7 9262
df22d223
AM		 9263 if (sym->st_value > toc->rawsize)
9264 i = toc->rawsize >> 3;
9265 else
9266 i = sym->st_value >> 3;
854b41e7 9267
df22d223
AM		 9268 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9269 {
9270 if (local_toc_syms)
9271 (*_bfd_error_handler)
9272 (_("%s defined on removed toc entry"),
9273 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9274 do
9275 ++i;
9276 while ((skip[i] & (ref_from_discarded | can_optimize)));
9277 sym->st_value = (bfd_vma) i << 3;
9278 }
d62b3684 9279
df22d223
AM		 9280 sym->st_value -= skip[i];
9281 symtab_hdr->contents = (unsigned char *) local_syms;
9282 }
c5614fa4 9283
854b41e7 9284 /* Adjust any global syms defined in this toc input section. */
c5614fa4
AM		 9285 if (toc_inf.global_toc_syms)
9286 {
9287 toc_inf.toc = toc;
9288 toc_inf.skip = skip;
9289 toc_inf.global_toc_syms = FALSE;
9290 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9291 &toc_inf);
9292 }
854b41e7
AM		 9293
9294 if (toc->reloc_count != 0)
9295 {
d4730f92 9296 Elf_Internal_Shdr *rel_hdr;
854b41e7
AM		 9297 Elf_Internal_Rela *wrel;
9298 bfd_size_type sz;
9299
854b41e7 9300 /* Remove unused toc relocs, and adjust those we keep. */
28be611c
AM		 9301 if (toc_relocs == NULL)
9302 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9303 info->keep_memory);
9304 if (toc_relocs == NULL)
9305 goto error_ret;
9306
425b145b
AM		 9307 wrel = toc_relocs;
9308 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 9309 if ((skip[rel->r_offset >> 3]
9310 & (ref_from_discarded | can_optimize)) == 0)
854b41e7
AM		 9311 {
9312 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9313 wrel->r_info = rel->r_info;
9314 wrel->r_addend = rel->r_addend;
9315 ++wrel;
9316 }
9317 else if (!dec_dynrel_count (rel->r_info, toc, info,
9318 &local_syms, NULL, NULL))
9319 goto error_ret;
9320
425b145b
AM		 9321 elf_section_data (toc)->relocs = toc_relocs;
9322 toc->reloc_count = wrel - toc_relocs;
d4730f92
BS		 9323 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9324 sz = rel_hdr->sh_entsize;
9325 rel_hdr->sh_size = toc->reloc_count * sz;
854b41e7 9326 }
c5614fa4 9327 }
28be611c
AM		 9328 else if (toc_relocs != NULL
9329 && elf_section_data (toc)->relocs != toc_relocs)
425b145b 9330 free (toc_relocs);
c5614fa4
AM		 9331
9332 if (local_syms != NULL
9333 && symtab_hdr->contents != (unsigned char *) local_syms)
9334 {
9335 if (!info->keep_memory)
9336 free (local_syms);
9337 else
9338 symtab_hdr->contents = (unsigned char *) local_syms;
9339 }
9340 free (skip);
9341 }
9342
9343 return TRUE;
9344}
9345
1bbe0902
AM		 9346/* Return true iff input section I references the TOC using
9347 instructions limited to +/-32k offsets. */
9348
9349bfd_boolean
9350ppc64_elf_has_small_toc_reloc (asection *i)
9351{
9352 return (is_ppc64_elf (i->owner)
9353 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9354}
9355
927be08e
AM		 9356/* Allocate space for one GOT entry. */
9357
9358static void
9359allocate_got (struct elf_link_hash_entry *h,
9360 struct bfd_link_info *info,
9361 struct got_entry *gent)
9362{
9363 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9364 bfd_boolean dyn;
9365 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9366 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9367 ? 16 : 8);
9368 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9369 ? 2 : 1) * sizeof (Elf64_External_Rela);
9370 asection *got = ppc64_elf_tdata (gent->owner)->got;
9371
9372 gent->got.offset = got->size;
9373 got->size += entsize;
9374
9375 dyn = htab->elf.dynamic_sections_created;
19e08130 9376 if (h->type == STT_GNU_IFUNC)
927be08e 9377 {
33e44f2e 9378 htab->elf.irelplt->size += rentsize;
19e08130 9379 htab->got_reli_size += rentsize;
927be08e 9380 }
0e1862bb 9381 else if ((bfd_link_pic (info)
19e08130
AM		 9382 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9383 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9384 || h->root.type != bfd_link_hash_undefweak))
927be08e 9385 {
19e08130 9386 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
927be08e 9387 relgot->size += rentsize;
927be08e
AM		 9388 }
9389}
9390
7865406b
AM		 9391/* This function merges got entries in the same toc group. */
9392
9393static void
9394merge_got_entries (struct got_entry **pent)
9395{
9396 struct got_entry *ent, *ent2;
9397
9398 for (ent = *pent; ent != NULL; ent = ent->next)
9399 if (!ent->is_indirect)
9400 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9401 if (!ent2->is_indirect
9402 && ent2->addend == ent->addend
9403 && ent2->tls_type == ent->tls_type
9404 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9405 {
9406 ent2->is_indirect = TRUE;
9407 ent2->got.ent = ent;
9408 }
9409}
9410
65f38f15
AM		 9411/* Allocate space in .plt, .got and associated reloc sections for
9412 dynamic relocs. */
5bd4f169 9413
b34976b6 9414static bfd_boolean
4ce794b7 9415allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 9416{
65f38f15
AM		 9417 struct bfd_link_info *info;
9418 struct ppc_link_hash_table *htab;
5bd4f169 9419 asection *s;
65f38f15 9420 struct ppc_link_hash_entry *eh;
6061a67d 9421 struct elf_dyn_relocs *p;
0b8bcf0d 9422 struct got_entry **pgent, *gent;
5bd4f169 9423
e92d460e 9424 if (h->root.type == bfd_link_hash_indirect)
b34976b6 9425 return TRUE;
5bd4f169 9426
65f38f15
AM		 9427 info = (struct bfd_link_info *) inf;
9428 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9429 if (htab == NULL)
9430 return FALSE;
5bd4f169 9431
e054468f
AM		 9432 if ((htab->elf.dynamic_sections_created
9433 && h->dynindx != -1
0e1862bb 9434 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
e054468f 9435 || h->type == STT_GNU_IFUNC)
5bd4f169 9436 {
411e1bfb
AM		 9437 struct plt_entry *pent;
9438 bfd_boolean doneone = FALSE;
9439 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9440 if (pent->plt.refcount > 0)
9441 {
25f23106
AM		 9442 if (!htab->elf.dynamic_sections_created
9443 || h->dynindx == -1)
e054468f 9444 {
33e44f2e 9445 s = htab->elf.iplt;
e054468f 9446 pent->plt.offset = s->size;
b9e5796b 9447 s->size += PLT_ENTRY_SIZE (htab);
33e44f2e 9448 s = htab->elf.irelplt;
e054468f
AM		 9449 }
9450 else
9451 {
9452 /* If this is the first .plt entry, make room for the special
9453 first entry. */
33e44f2e 9454 s = htab->elf.splt;
e054468f 9455 if (s->size == 0)
b9e5796b 9456 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
e054468f
AM		 9457
9458 pent->plt.offset = s->size;
9459
9460 /* Make room for this entry. */
b9e5796b 9461 s->size += PLT_ENTRY_SIZE (htab);
e054468f
AM		 9462
9463 /* Make room for the .glink code. */
9464 s = htab->glink;
9465 if (s->size == 0)
9466 s->size += GLINK_CALL_STUB_SIZE;
b9e5796b
AM		 9467 if (htab->opd_abi)
9468 {
9469 /* We need bigger stubs past index 32767. */
9470 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9471 s->size += 4;
9472 s->size += 2*4;
9473 }
9474 else
e054468f 9475 s->size += 4;
e054468f
AM		 9476
9477 /* We also need to make an entry in the .rela.plt section. */
33e44f2e 9478 s = htab->elf.srelplt;
e054468f 9479 }
eea6121a 9480 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 9481 doneone = TRUE;
9482 }
9483 else
9484 pent->plt.offset = (bfd_vma) -1;
9485 if (!doneone)
65f38f15 9486 {
411e1bfb 9487 h->plt.plist = NULL;
f5385ebf 9488 h->needs_plt = 0;
65f38f15
AM		 9489 }
9490 }
9491 else
9492 {
411e1bfb 9493 h->plt.plist = NULL;
f5385ebf 9494 h->needs_plt = 0;
65f38f15
AM		 9495 }
9496
951fd09b
AM		 9497 eh = (struct ppc_link_hash_entry *) h;
9498 /* Run through the TLS GD got entries first if we're changing them
9499 to TPREL. */
e7b938ca 9500 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 9501 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9502 if (gent->got.refcount > 0
9503 && (gent->tls_type & TLS_GD) != 0)
9504 {
9505 /* This was a GD entry that has been converted to TPREL. If
9506 there happens to be a TPREL entry we can use that one. */
9507 struct got_entry *ent;
9508 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9509 if (ent->got.refcount > 0
9510 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 9511 && ent->addend == gent->addend
9512 && ent->owner == gent->owner)
951fd09b
AM		 9513 {
9514 gent->got.refcount = 0;
9515 break;
9516 }
9517
9518 /* If not, then we'll be using our own TPREL entry. */
9519 if (gent->got.refcount != 0)
9520 gent->tls_type = TLS_TLS | TLS_TPREL;
9521 }
9522
7865406b
AM		 9523 /* Remove any list entry that won't generate a word in the GOT before
9524 we call merge_got_entries. Otherwise we risk merging to empty
9525 entries. */
0b8bcf0d
AM		 9526 pgent = &h->got.glist;
9527 while ((gent = *pgent) != NULL)
411e1bfb 9528 if (gent->got.refcount > 0)
7865406b
AM		 9529 {
9530 if ((gent->tls_type & TLS_LD) != 0
9531 && !h->def_dynamic)
9532 {
9533 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9534 *pgent = gent->next;
9535 }
9536 else
9537 pgent = &gent->next;
9538 }
9539 else
9540 *pgent = gent->next;
9541
9542 if (!htab->do_multi_toc)
9543 merge_got_entries (&h->got.glist);
9544
9545 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9546 if (!gent->is_indirect)
411e1bfb
AM		 9547 {
9548 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 9549 Undefined weak syms won't yet be marked as dynamic,
9550 nor will all TLS symbols. */
411e1bfb 9551 if (h->dynindx == -1
b099ab9f 9552 && !h->forced_local
25f23106 9553 && h->type != STT_GNU_IFUNC
b099ab9f 9554 && htab->elf.dynamic_sections_created)
411e1bfb 9555 {
c152c796 9556 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 9557 return FALSE;
9558 }
65f38f15 9559
0c8d6e5c 9560 if (!is_ppc64_elf (gent->owner))
927be08e 9561 abort ();
0ffa91dd 9562
927be08e 9563 allocate_got (h, info, gent);
411e1bfb 9564 }
65f38f15 9565
b099ab9f 9566 if (eh->dyn_relocs == NULL
25f23106 9567 || (!htab->elf.dynamic_sections_created
14b5f73f 9568 && h->type != STT_GNU_IFUNC))
b34976b6 9569 return TRUE;
65f38f15
AM		 9570
9571 /* In the shared -Bsymbolic case, discard space allocated for
9572 dynamic pc-relative relocs against symbols which turn out to be
9573 defined in regular objects. For the normal shared case, discard
9574 space for relocs that have become local due to symbol visibility
9575 changes. */
9576
0e1862bb 9577 if (bfd_link_pic (info))
65f38f15 9578 {
9c7a29a3 9579 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 9580 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM		 9581 generated via assembly. We want calls to protected symbols to
9582 resolve directly to the function rather than going via the plt.
9583 If people want function pointer comparisons to work as expected
9584 then they should avoid writing weird assembly. */
09695f56 9585 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15 9586 {
6061a67d 9587 struct elf_dyn_relocs **pp;
65f38f15
AM		 9588
9589 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 9590 {
65f38f15
AM		 9591 p->count -= p->pc_count;
9592 p->pc_count = 0;
9593 if (p->count == 0)
9594 *pp = p->next;
9595 else
9596 pp = &p->next;
5bd4f169 9597 }
65f38f15 9598 }
4e795f50
AM		 9599
9600 /* Also discard relocs on undefined weak syms with non-default
9601 visibility. */
cab87ef9
AM		 9602 if (eh->dyn_relocs != NULL
9603 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 9604 {
9605 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9606 eh->dyn_relocs = NULL;
9607
9608 /* Make sure this symbol is output as a dynamic symbol.
9609 Undefined weak syms won't yet be marked as dynamic. */
9610 else if (h->dynindx == -1
9611 && !h->forced_local)
9612 {
9613 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9614 return FALSE;
9615 }
9616 }
65f38f15 9617 }
25f23106
AM		 9618 else if (h->type == STT_GNU_IFUNC)
9619 {
9620 if (!h->non_got_ref)
9621 eh->dyn_relocs = NULL;
9622 }
f4656909 9623 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 9624 {
9625 /* For the non-shared case, discard space for relocs against
9626 symbols which turn out to need copy relocs or are not
9627 dynamic. */
9628
f5385ebf 9629 if (!h->non_got_ref
f5385ebf 9630 && !h->def_regular)
65f38f15
AM		 9631 {
9632 /* Make sure this symbol is output as a dynamic symbol.
9633 Undefined weak syms won't yet be marked as dynamic. */
9634 if (h->dynindx == -1
f5385ebf 9635 && !h->forced_local)
65f38f15 9636 {
c152c796 9637 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 9638 return FALSE;
65f38f15
AM		 9639 }
9640
9641 /* If that succeeded, we know we'll be keeping all the
9642 relocs. */
9643 if (h->dynindx != -1)
9644 goto keep;
9645 }
9646
9647 eh->dyn_relocs = NULL;
9648
ec338859 9649 keep: ;
65f38f15
AM		 9650 }
9651
9652 /* Finally, allocate space. */
9653 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9654 {
9655 asection *sreloc = elf_section_data (p->sec)->sreloc;
19e08130 9656 if (eh->elf.type == STT_GNU_IFUNC)
33e44f2e 9657 sreloc = htab->elf.irelplt;
eea6121a 9658 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 9659 }
9660
b34976b6 9661 return TRUE;
65f38f15
AM		 9662}
9663
a345bc8d
AM		 9664/* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9665 to set up space for global entry stubs. These are put in glink,
9666 after the branch table. */
65f38f15 9667
b34976b6 9668static bfd_boolean
a345bc8d 9669size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
65f38f15 9670{
a345bc8d
AM		 9671 struct bfd_link_info *info;
9672 struct ppc_link_hash_table *htab;
9673 struct plt_entry *pent;
9674 asection *s;
65f38f15 9675
a345bc8d
AM		 9676 if (h->root.type == bfd_link_hash_indirect)
9677 return TRUE;
65f38f15 9678
a345bc8d
AM		 9679 if (!h->pointer_equality_needed)
9680 return TRUE;
65f38f15 9681
a345bc8d
AM		 9682 if (h->def_regular)
9683 return TRUE;
65f38f15 9684
a345bc8d
AM		 9685 info = inf;
9686 htab = ppc_hash_table (info);
9687 if (htab == NULL)
9688 return FALSE;
9689
9690 s = htab->glink;
9691 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9692 if (pent->plt.offset != (bfd_vma) -1
9693 && pent->addend == 0)
9694 {
afe397ea
AM		 9695 /* For ELFv2, if this symbol is not defined in a regular file
9696 and we are not generating a shared library or pie, then we
9697 need to define the symbol in the executable on a call stub.
9698 This is to avoid text relocations. */
a345bc8d 9699 s->size = (s->size + 15) & -16;
afe397ea
AM		 9700 h->root.u.def.section = s;
9701 h->root.u.def.value = s->size;
a345bc8d
AM		 9702 s->size += 16;
9703 break;
9704 }
9705 return TRUE;
9706}
9707
9708/* Set DF_TEXTREL if we find any dynamic relocs that apply to
9709 read-only sections. */
9710
9711static bfd_boolean
9712maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9713{
9714 if (h->root.type == bfd_link_hash_indirect)
9715 return TRUE;
9716
9717 if (readonly_dynrelocs (h))
9718 {
9719 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9720
9721 /* Not an error, just cut short the traversal. */
9722 return FALSE;
65f38f15 9723 }
b34976b6 9724 return TRUE;
65f38f15
AM		 9725}
9726
9727/* Set the sizes of the dynamic sections. */
9728
b34976b6 9729static bfd_boolean
ee67d69a 9730ppc64_elf_size_dynamic_sections (bfd *output_bfd,
4ce794b7 9731 struct bfd_link_info *info)
65f38f15
AM		 9732{
9733 struct ppc_link_hash_table *htab;
9734 bfd *dynobj;
9735 asection *s;
b34976b6 9736 bfd_boolean relocs;
65f38f15 9737 bfd *ibfd;
7865406b 9738 struct got_entry *first_tlsld;
65f38f15
AM		 9739
9740 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9741 if (htab == NULL)
9742 return FALSE;
9743
65f38f15
AM		 9744 dynobj = htab->elf.dynobj;
9745 if (dynobj == NULL)
9746 abort ();
9747
9748 if (htab->elf.dynamic_sections_created)
9749 {
9750 /* Set the contents of the .interp section to the interpreter. */
0e1862bb 9751 if (bfd_link_executable (info))
65f38f15 9752 {
3d4d4302 9753 s = bfd_get_linker_section (dynobj, ".interp");
65f38f15
AM		 9754 if (s == NULL)
9755 abort ();
eea6121a 9756 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 9757 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9758 }
9759 }
9760
9761 /* Set up .got offsets for local syms, and space for local dynamic
9762 relocs. */
c72f2fb2 9763 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
65f38f15 9764 {
411e1bfb
AM		 9765 struct got_entry **lgot_ents;
9766 struct got_entry **end_lgot_ents;
e054468f
AM		 9767 struct plt_entry **local_plt;
9768 struct plt_entry **end_local_plt;
f961d9dd 9769 unsigned char *lgot_masks;
65f38f15
AM		 9770 bfd_size_type locsymcount;
9771 Elf_Internal_Shdr *symtab_hdr;
65f38f15 9772
0c8d6e5c 9773 if (!is_ppc64_elf (ibfd))
65f38f15
AM		 9774 continue;
9775
9776 for (s = ibfd->sections; s != NULL; s = s->next)
9777 {
19e08130 9778 struct ppc_dyn_relocs *p;
65f38f15 9779
6edfbbad 9780 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 9781 {
ec338859
AM		 9782 if (!bfd_is_abs_section (p->sec)
9783 && bfd_is_abs_section (p->sec->output_section))
9784 {
9785 /* Input section has been discarded, either because
9786 it is a copy of a linkonce section or due to
9787 linker script /DISCARD/, so we'll be discarding
9788 the relocs too. */
9789 }
248866a8 9790 else if (p->count != 0)
ec338859 9791 {
19e08130
AM		 9792 asection *srel = elf_section_data (p->sec)->sreloc;
9793 if (p->ifunc)
33e44f2e 9794 srel = htab->elf.irelplt;
eea6121a 9795 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 9796 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9797 info->flags |= DF_TEXTREL;
ec338859 9798 }
65f38f15
AM		 9799 }
9800 }
9801
411e1bfb
AM		 9802 lgot_ents = elf_local_got_ents (ibfd);
9803 if (!lgot_ents)
65f38f15
AM		 9804 continue;
9805
0ffa91dd 9806 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 9807 locsymcount = symtab_hdr->sh_info;
411e1bfb 9808 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM		 9809 local_plt = (struct plt_entry **) end_lgot_ents;
9810 end_local_plt = local_plt + locsymcount;
f961d9dd 9811 lgot_masks = (unsigned char *) end_local_plt;
e717da7e 9812 s = ppc64_elf_tdata (ibfd)->got;
e7b938ca 9813 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 9814 {
0b8bcf0d 9815 struct got_entry **pent, *ent;
411e1bfb 9816
0b8bcf0d
AM		 9817 pent = lgot_ents;
9818 while ((ent = *pent) != NULL)
411e1bfb
AM		 9819 if (ent->got.refcount > 0)
9820 {
e7b938ca 9821 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 9822 {
927be08e 9823 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 9824 *pent = ent->next;
411e1bfb
AM		 9825 }
9826 else
9827 {
19e08130
AM		 9828 unsigned int ent_size = 8;
9829 unsigned int rel_size = sizeof (Elf64_External_Rela);
9830
eea6121a 9831 ent->got.offset = s->size;
e7b938ca 9832 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
927be08e 9833 {
19e08130
AM		 9834 ent_size *= 2;
9835 rel_size *= 2;
9836 }
9837 s->size += ent_size;
9838 if ((*lgot_masks & PLT_IFUNC) != 0)
9839 {
33e44f2e 9840 htab->elf.irelplt->size += rel_size;
19e08130
AM		 9841 htab->got_reli_size += rel_size;
9842 }
0e1862bb 9843 else if (bfd_link_pic (info))
19e08130
AM		 9844 {
9845 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9846 srel->size += rel_size;
927be08e 9847 }
0b8bcf0d 9848 pent = &ent->next;
411e1bfb
AM		 9849 }
9850 }
9851 else
0b8bcf0d 9852 *pent = ent->next;
65f38f15 9853 }
e054468f
AM		 9854
9855 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9856 for (; local_plt < end_local_plt; ++local_plt)
9857 {
9858 struct plt_entry *ent;
9859
9860 for (ent = *local_plt; ent != NULL; ent = ent->next)
9861 if (ent->plt.refcount > 0)
9862 {
33e44f2e 9863 s = htab->elf.iplt;
e054468f 9864 ent->plt.offset = s->size;
b9e5796b 9865 s->size += PLT_ENTRY_SIZE (htab);
e054468f 9866
33e44f2e 9867 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
e054468f
AM		 9868 }
9869 else
9870 ent->plt.offset = (bfd_vma) -1;
9871 }
65f38f15
AM		 9872 }
9873
9874 /* Allocate global sym .plt and .got entries, and space for global
9875 sym dynamic relocs. */
4ce794b7 9876 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
a345bc8d
AM		 9877 /* Stash the end of glink branch table. */
9878 if (htab->glink != NULL)
9879 htab->glink->rawsize = htab->glink->size;
9880
0e1862bb 9881 if (!htab->opd_abi && !bfd_link_pic (info))
a345bc8d 9882 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
65f38f15 9883
7865406b 9884 first_tlsld = NULL;
c72f2fb2 9885 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
102890f0 9886 {
7865406b
AM		 9887 struct got_entry *ent;
9888
0c8d6e5c 9889 if (!is_ppc64_elf (ibfd))
102890f0
AM		 9890 continue;
9891
7865406b
AM		 9892 ent = ppc64_tlsld_got (ibfd);
9893 if (ent->got.refcount > 0)
102890f0 9894 {
7865406b 9895 if (!htab->do_multi_toc && first_tlsld != NULL)
102890f0 9896 {
7865406b
AM		 9897 ent->is_indirect = TRUE;
9898 ent->got.ent = first_tlsld;
9899 }
9900 else
9901 {
9902 if (first_tlsld == NULL)
9903 first_tlsld = ent;
9904 s = ppc64_elf_tdata (ibfd)->got;
9905 ent->got.offset = s->size;
9906 ent->owner = ibfd;
9907 s->size += 16;
0e1862bb 9908 if (bfd_link_pic (info))
7865406b
AM		 9909 {
9910 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9911 srel->size += sizeof (Elf64_External_Rela);
9912 }
102890f0
AM		 9913 }
9914 }
9915 else
7865406b 9916 ent->got.offset = (bfd_vma) -1;
102890f0
AM		 9917 }
9918
65f38f15
AM		 9919 /* We now have determined the sizes of the various dynamic sections.
9920 Allocate memory for them. */
b34976b6 9921 relocs = FALSE;
65f38f15
AM		 9922 for (s = dynobj->sections; s != NULL; s = s->next)
9923 {
9924 if ((s->flags & SEC_LINKER_CREATED) == 0)
9925 continue;
9926
4ce794b7 9927 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 9928 /* These haven't been allocated yet; don't strip. */
9929 continue;
33e44f2e
AM		 9930 else if (s == htab->elf.sgot
9931 || s == htab->elf.splt
9932 || s == htab->elf.iplt
c456f082
AM		 9933 || s == htab->glink
9934 || s == htab->dynbss)
65f38f15
AM		 9935 {
9936 /* Strip this section if we don't need it; see the
9937 comment below. */
5bd4f169 9938 }
58d180e8
AM		 9939 else if (s == htab->glink_eh_frame)
9940 {
9941 if (!bfd_is_abs_section (s->output_section))
9942 /* Not sized yet. */
9943 continue;
9944 }
70cc837d 9945 else if (CONST_STRNEQ (s->name, ".rela"))
5bd4f169 9946 {
c456f082 9947 if (s->size != 0)
5bd4f169 9948 {
33e44f2e 9949 if (s != htab->elf.srelplt)
b34976b6 9950 relocs = TRUE;
5bd4f169
AM		 9951
9952 /* We use the reloc_count field as a counter if we need
9953 to copy relocs into the output file. */
9954 s->reloc_count = 0;
9955 }
9956 }
65f38f15 9957 else
5bd4f169
AM		 9958 {
9959 /* It's not one of our sections, so don't allocate space. */
9960 continue;
9961 }
9962
eea6121a 9963 if (s->size == 0)
5bd4f169 9964 {
c456f082
AM		 9965 /* If we don't need this section, strip it from the
9966 output file. This is mostly to handle .rela.bss and
9967 .rela.plt. We must create both sections in
9968 create_dynamic_sections, because they must be created
9969 before the linker maps input sections to output
9970 sections. The linker does that before
9971 adjust_dynamic_symbol is called, and it is that
9972 function which decides whether anything needs to go
9973 into these sections. */
8423293d 9974 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 9975 continue;
9976 }
9977
c456f082 9978 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 9979 continue;
9980
65f38f15
AM		 9981 /* Allocate memory for the section contents. We use bfd_zalloc
9982 here in case unused entries are not reclaimed before the
9983 section's contents are written out. This should not happen,
411e1bfb
AM		 9984 but this way if it does we get a R_PPC64_NONE reloc in .rela
9985 sections instead of garbage.
9986 We also rely on the section contents being zero when writing
9987 the GOT. */
eea6121a 9988 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 9989 if (s->contents == NULL)
b34976b6 9990 return FALSE;
5bd4f169
AM		 9991 }
9992
c72f2fb2 9993 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
e717da7e 9994 {
0c8d6e5c 9995 if (!is_ppc64_elf (ibfd))
7b53ace3
AM		 9996 continue;
9997
e717da7e 9998 s = ppc64_elf_tdata (ibfd)->got;
33e44f2e 9999 if (s != NULL && s != htab->elf.sgot)
e717da7e 10000 {
eea6121a 10001 if (s->size == 0)
8423293d 10002 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 10003 else
10004 {
eea6121a 10005 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 10006 if (s->contents == NULL)
10007 return FALSE;
10008 }
10009 }
10010 s = ppc64_elf_tdata (ibfd)->relgot;
10011 if (s != NULL)
10012 {
eea6121a 10013 if (s->size == 0)
8423293d 10014 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 10015 else
10016 {
eea6121a 10017 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 10018 if (s->contents == NULL)
10019 return FALSE;
10020 relocs = TRUE;
10021 s->reloc_count = 0;
10022 }
10023 }
10024 }
10025
e86ce104 10026 if (htab->elf.dynamic_sections_created)
5bd4f169 10027 {
e8910a83
AM		 10028 bfd_boolean tls_opt;
10029
5bd4f169
AM		 10030 /* Add some entries to the .dynamic section. We fill in the
10031 values later, in ppc64_elf_finish_dynamic_sections, but we
10032 must add the entries now so that we get the correct size for
10033 the .dynamic section. The DT_DEBUG entry is filled in by the
10034 dynamic linker and used by the debugger. */
dc810e39 10035#define add_dynamic_entry(TAG, VAL) \
5a580b3a 10036 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 10037
0e1862bb 10038 if (bfd_link_executable (info))
5bd4f169 10039 {
dc810e39 10040 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 10041 return FALSE;
5bd4f169
AM		 10042 }
10043
33e44f2e 10044 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5bd4f169 10045 {
dc810e39
AM		 10046 if (!add_dynamic_entry (DT_PLTGOT, 0)
10047 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10048 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 10049 || !add_dynamic_entry (DT_JMPREL, 0)
10050 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 10051 return FALSE;
5bd4f169
AM		 10052 }
10053
ee67d69a 10054 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
19397422
AM		 10055 {
10056 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10057 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 10058 return FALSE;
19397422
AM		 10059 }
10060
e7d1c40c 10061 tls_opt = (!htab->params->no_tls_get_addr_opt
e8910a83
AM		 10062 && htab->tls_get_addr_fd != NULL
10063 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10064 if (tls_opt || !htab->opd_abi)
10065 {
10066 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10067 return FALSE;
10068 }
a7f2871e 10069
5bd4f169
AM		 10070 if (relocs)
10071 {
dc810e39
AM		 10072 if (!add_dynamic_entry (DT_RELA, 0)
10073 || !add_dynamic_entry (DT_RELASZ, 0)
10074 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 10075 return FALSE;
5bd4f169 10076
65f38f15
AM		 10077 /* If any dynamic relocs apply to a read-only section,
10078 then we need a DT_TEXTREL entry. */
248866a8 10079 if ((info->flags & DF_TEXTREL) == 0)
a345bc8d 10080 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
5bd4f169 10081
65f38f15 10082 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 10083 {
65f38f15 10084 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10085 return FALSE;
5bd4f169 10086 }
5bd4f169 10087 }
5bd4f169 10088 }
65f38f15 10089#undef add_dynamic_entry
5bd4f169 10090
b34976b6 10091 return TRUE;
5bd4f169
AM		 10092}
10093
a345bc8d
AM		 10094/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10095
10096static bfd_boolean
10097ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10098{
10099 if (h->plt.plist != NULL
10100 && !h->def_regular
10101 && !h->pointer_equality_needed)
10102 return FALSE;
10103
10104 return _bfd_elf_hash_symbol (h);
10105}
10106
721956f4 10107/* Determine the type of stub needed, if any, for a call. */
5bd4f169 10108
4ce794b7
AM		 10109static inline enum ppc_stub_type
10110ppc_type_of_stub (asection *input_sec,
10111 const Elf_Internal_Rela *rel,
10112 struct ppc_link_hash_entry **hash,
e054468f 10113 struct plt_entry **plt_ent,
6911b7dc
AM		 10114 bfd_vma destination,
10115 unsigned long local_off)
5bd4f169 10116{
721956f4
AM		 10117 struct ppc_link_hash_entry *h = *hash;
10118 bfd_vma location;
10119 bfd_vma branch_offset;
10120 bfd_vma max_branch_offset;
4ce794b7 10121 enum elf_ppc64_reloc_type r_type;
5bd4f169 10122
721956f4
AM		 10123 if (h != NULL)
10124 {
e054468f 10125 struct plt_entry *ent;
7fe2b9a6 10126 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM		 10127 if (h->oh != NULL
10128 && h->oh->is_func_descriptor)
7b8f6675
AM		 10129 {
10130 fdh = ppc_follow_link (h->oh);
10131 *hash = fdh;
10132 }
8387904d 10133
e054468f
AM		 10134 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10135 if (ent->addend == rel->r_addend
10136 && ent->plt.offset != (bfd_vma) -1)
10137 {
e054468f
AM		 10138 *plt_ent = ent;
10139 return ppc_stub_plt_call;
10140 }
5bd4f169 10141
7fe2b9a6
AM		 10142 /* Here, we know we don't have a plt entry. If we don't have a
10143 either a defined function descriptor or a defined entry symbol
10144 in a regular object file, then it is pointless trying to make
10145 any other type of stub. */
854b41e7
AM		 10146 if (!is_static_defined (&fdh->elf)
10147 && !is_static_defined (&h->elf))
721956f4 10148 return ppc_stub_none;
5d1634d7 10149 }
e054468f
AM		 10150 else if (elf_local_got_ents (input_sec->owner) != NULL)
10151 {
10152 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10153 struct plt_entry **local_plt = (struct plt_entry **)
10154 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10155 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10156
10157 if (local_plt[r_symndx] != NULL)
10158 {
10159 struct plt_entry *ent;
10160
10161 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10162 if (ent->addend == rel->r_addend
10163 && ent->plt.offset != (bfd_vma) -1)
10164 {
10165 *plt_ent = ent;
10166 return ppc_stub_plt_call;
10167 }
10168 }
10169 }
5d1634d7 10170
721956f4
AM		 10171 /* Determine where the call point is. */
10172 location = (input_sec->output_offset
10173 + input_sec->output_section->vma
10174 + rel->r_offset);
5d1634d7 10175
721956f4
AM		 10176 branch_offset = destination - location;
10177 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 10178
721956f4
AM		 10179 /* Determine if a long branch stub is needed. */
10180 max_branch_offset = 1 << 25;
4ce794b7 10181 if (r_type != R_PPC64_REL24)
721956f4 10182 max_branch_offset = 1 << 15;
5d1634d7 10183
6911b7dc 10184 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
721956f4
AM		 10185 /* We need a stub. Figure out whether a long_branch or plt_branch
10186 is needed later. */
10187 return ppc_stub_long_branch;
5d1634d7 10188
721956f4 10189 return ppc_stub_none;
5d1634d7
AM		 10190}
10191
794e51c0
AM		 10192/* With power7 weakly ordered memory model, it is possible for ld.so
10193 to update a plt entry in one thread and have another thread see a
10194 stale zero toc entry. To avoid this we need some sort of acquire
10195 barrier in the call stub. One solution is to make the load of the
10196 toc word seem to appear to depend on the load of the function entry
10197 word. Another solution is to test for r2 being zero, and branch to
10198 the appropriate glink entry if so.
10199
10200 . fake dep barrier compare
71a39c98
AM		 10201 . ld 12,xxx(2) ld 12,xxx(2)
10202 . mtctr 12 mtctr 12
10203 . xor 11,12,12 ld 2,xxx+8(2)
794e51c0
AM		 10204 . add 2,2,11 cmpldi 2,0
10205 . ld 2,xxx+8(2) bnectr+
10206 . bctr b <glink_entry>
10207
10208 The solution involving the compare turns out to be faster, so
10209 that's what we use unless the branch won't reach. */
10210
10211#define ALWAYS_USE_FAKE_DEP 0
10212#define ALWAYS_EMIT_R2SAVE 0
5d1634d7 10213
5d1634d7
AM		 10214#define PPC_LO(v) ((v) & 0xffff)
10215#define PPC_HI(v) (((v) >> 16) & 0xffff)
10216#define PPC_HA(v) PPC_HI ((v) + 0x8000)
10217
794e51c0
AM		 10218static inline unsigned int
10219plt_stub_size (struct ppc_link_hash_table *htab,
10220 struct ppc_stub_hash_entry *stub_entry,
10221 bfd_vma off)
10222{
b9e5796b
AM		 10223 unsigned size = 12;
10224
10225 if (ALWAYS_EMIT_R2SAVE
10226 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10227 size += 4;
10228 if (PPC_HA (off) != 0)
794e51c0 10229 size += 4;
b9e5796b
AM		 10230 if (htab->opd_abi)
10231 {
10232 size += 4;
e7d1c40c 10233 if (htab->params->plt_static_chain)
b9e5796b 10234 size += 4;
bd4d2eaa
AM		 10235 if (htab->params->plt_thread_safe
10236 && htab->elf.dynamic_sections_created
10237 && stub_entry->h != NULL
10238 && stub_entry->h->elf.dynindx != -1)
b9e5796b 10239 size += 8;
e7d1c40c 10240 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
b9e5796b
AM		 10241 size += 4;
10242 }
794e51c0
AM		 10243 if (stub_entry->h != NULL
10244 && (stub_entry->h == htab->tls_get_addr_fd
10245 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10246 && !htab->params->no_tls_get_addr_opt)
794e51c0
AM		 10247 size += 13 * 4;
10248 return size;
10249}
10250
10251/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10252 then return the padding needed to do so. */
10253static inline unsigned int
10254plt_stub_pad (struct ppc_link_hash_table *htab,
10255 struct ppc_stub_hash_entry *stub_entry,
10256 bfd_vma plt_off)
10257{
e7d1c40c 10258 int stub_align = 1 << htab->params->plt_stub_align;
794e51c0 10259 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
6f20ed8a 10260 bfd_vma stub_off = stub_entry->group->stub_sec->size;
794e51c0
AM		 10261
10262 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
e05fa0ba 10263 > ((stub_size - 1) & -stub_align))
794e51c0
AM		 10264 return stub_align - (stub_off & (stub_align - 1));
10265 return 0;
10266}
10267
10268/* Build a .plt call stub. */
10269
10270static inline bfd_byte *
10271build_plt_stub (struct ppc_link_hash_table *htab,
10272 struct ppc_stub_hash_entry *stub_entry,
10273 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10274{
e7d1c40c 10275 bfd *obfd = htab->params->stub_bfd;
b9e5796b 10276 bfd_boolean plt_load_toc = htab->opd_abi;
e7d1c40c 10277 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
bd4d2eaa
AM		 10278 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10279 && htab->elf.dynamic_sections_created
10280 && stub_entry->h != NULL
10281 && stub_entry->h->elf.dynindx != -1);
794e51c0
AM		 10282 bfd_boolean use_fake_dep = plt_thread_safe;
10283 bfd_vma cmp_branch_off = 0;
10284
10285 if (!ALWAYS_USE_FAKE_DEP
b9e5796b 10286 && plt_load_toc
794e51c0 10287 && plt_thread_safe
bd4d2eaa
AM		 10288 && !((stub_entry->h == htab->tls_get_addr_fd
10289 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10290 && !htab->params->no_tls_get_addr_opt))
794e51c0
AM		 10291 {
10292 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
b9e5796b
AM		 10293 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10294 / PLT_ENTRY_SIZE (htab));
794e51c0
AM		 10295 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10296 bfd_vma to, from;
10297
68d62958
AM		 10298 if (pltindex > 32768)
10299 glinkoff += (pltindex - 32768) * 4;
794e51c0
AM		 10300 to = (glinkoff
10301 + htab->glink->output_offset
10302 + htab->glink->output_section->vma);
6f20ed8a 10303 from = (p - stub_entry->group->stub_sec->contents
794e51c0
AM		 10304 + 4 * (ALWAYS_EMIT_R2SAVE
10305 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10306 + 4 * (PPC_HA (offset) != 0)
10307 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10308 != PPC_HA (offset))
10309 + 4 * (plt_static_chain != 0)
10310 + 20
6f20ed8a
AM		 10311 + stub_entry->group->stub_sec->output_offset
10312 + stub_entry->group->stub_sec->output_section->vma);
794e51c0
AM		 10313 cmp_branch_off = to - from;
10314 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10315 }
10316
ac2df442
AM		 10317 if (PPC_HA (offset) != 0)
10318 {
176a0d42
AM		 10319 if (r != NULL)
10320 {
794e51c0
AM		 10321 if (ALWAYS_EMIT_R2SAVE
10322 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10323 r[0].r_offset += 4;
176a0d42 10324 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
3b421ab3 10325 r[1].r_offset = r[0].r_offset + 4;
176a0d42
AM		 10326 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10327 r[1].r_addend = r[0].r_addend;
b9e5796b 10328 if (plt_load_toc)
176a0d42 10329 {
b9e5796b 10330 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10331 {
b9e5796b
AM		 10332 r[2].r_offset = r[1].r_offset + 4;
10333 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10334 r[2].r_addend = r[0].r_addend;
10335 }
10336 else
10337 {
10338 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10339 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10340 r[2].r_addend = r[0].r_addend + 8;
10341 if (plt_static_chain)
10342 {
10343 r[3].r_offset = r[2].r_offset + 4;
10344 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10345 r[3].r_addend = r[0].r_addend + 16;
10346 }
c7131b65 10347 }
176a0d42
AM		 10348 }
10349 }
794e51c0
AM		 10350 if (ALWAYS_EMIT_R2SAVE
10351 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10352 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
397998fc
AM		 10353 if (plt_load_toc)
10354 {
10355 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10356 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10357 }
10358 else
10359 {
10360 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10361 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10362 }
b9e5796b
AM		 10363 if (plt_load_toc
10364 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442 10365 {
71a39c98 10366 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
ac2df442
AM		 10367 offset = 0;
10368 }
71a39c98 10369 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10370 if (plt_load_toc)
794e51c0 10371 {
b9e5796b
AM		 10372 if (use_fake_dep)
10373 {
10374 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10375 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10376 }
10377 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10378 if (plt_static_chain)
10379 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
794e51c0 10380 }
ac2df442
AM		 10381 }
10382 else
10383 {
176a0d42
AM		 10384 if (r != NULL)
10385 {
794e51c0
AM		 10386 if (ALWAYS_EMIT_R2SAVE
10387 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10388 r[0].r_offset += 4;
176a0d42 10389 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
b9e5796b 10390 if (plt_load_toc)
176a0d42 10391 {
b9e5796b 10392 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10393 {
b9e5796b
AM		 10394 r[1].r_offset = r[0].r_offset + 4;
10395 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10396 r[1].r_addend = r[0].r_addend;
10397 }
10398 else
10399 {
10400 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10401 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10402 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10403 if (plt_static_chain)
10404 {
10405 r[2].r_offset = r[1].r_offset + 4;
10406 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10407 r[2].r_addend = r[0].r_addend + 8;
10408 }
c7131b65 10409 }
176a0d42
AM		 10410 }
10411 }
794e51c0
AM		 10412 if (ALWAYS_EMIT_R2SAVE
10413 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10414 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
71a39c98 10415 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
b9e5796b
AM		 10416 if (plt_load_toc
10417 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442
AM		 10418 {
10419 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10420 offset = 0;
10421 }
71a39c98 10422 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10423 if (plt_load_toc)
794e51c0 10424 {
b9e5796b
AM		 10425 if (use_fake_dep)
10426 {
10427 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10428 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10429 }
10430 if (plt_static_chain)
10431 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10432 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
794e51c0 10433 }
ac2df442 10434 }
b9e5796b 10435 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
794e51c0
AM		 10436 {
10437 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10438 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
22aa0c7e 10439 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
794e51c0
AM		 10440 }
10441 else
10442 bfd_put_32 (obfd, BCTR, p), p += 4;
5d1634d7
AM		 10443 return p;
10444}
10445
a7f2871e
AM		 10446/* Build a special .plt call stub for __tls_get_addr. */
10447
10448#define LD_R11_0R3 0xe9630000
10449#define LD_R12_0R3 0xe9830000
10450#define MR_R0_R3 0x7c601b78
10451#define CMPDI_R11_0 0x2c2b0000
10452#define ADD_R3_R12_R13 0x7c6c6a14
10453#define BEQLR 0x4d820020
10454#define MR_R3_R0 0x7c030378
a7f2871e
AM		 10455#define STD_R11_0R1 0xf9610000
10456#define BCTRL 0x4e800421
10457#define LD_R11_0R1 0xe9610000
a7f2871e
AM		 10458#define MTLR_R11 0x7d6803a6
10459
10460static inline bfd_byte *
794e51c0
AM		 10461build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10462 struct ppc_stub_hash_entry *stub_entry,
10463 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
a7f2871e 10464{
e7d1c40c 10465 bfd *obfd = htab->params->stub_bfd;
794e51c0 10466
a7f2871e
AM		 10467 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10468 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10469 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10470 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10471 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10472 bfd_put_32 (obfd, BEQLR, p), p += 4;
10473 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10474 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
a078d95a 10475 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
a7f2871e
AM		 10476
10477 if (r != NULL)
10478 r[0].r_offset += 9 * 4;
794e51c0 10479 p = build_plt_stub (htab, stub_entry, p, offset, r);
a7f2871e
AM		 10480 bfd_put_32 (obfd, BCTRL, p - 4);
10481
a078d95a 10482 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
bd4d2eaa 10483 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
a7f2871e
AM		 10484 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10485 bfd_put_32 (obfd, BLR, p), p += 4;
10486
10487 return p;
10488}
10489
176a0d42
AM		 10490static Elf_Internal_Rela *
10491get_relocs (asection *sec, int count)
10492{
10493 Elf_Internal_Rela *relocs;
10494 struct bfd_elf_section_data *elfsec_data;
10495
10496 elfsec_data = elf_section_data (sec);
10497 relocs = elfsec_data->relocs;
10498 if (relocs == NULL)
10499 {
10500 bfd_size_type relsize;
10501 relsize = sec->reloc_count * sizeof (*relocs);
10502 relocs = bfd_alloc (sec->owner, relsize);
10503 if (relocs == NULL)
10504 return NULL;
10505 elfsec_data->relocs = relocs;
d4730f92
BS		 10506 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10507 sizeof (Elf_Internal_Shdr));
10508 if (elfsec_data->rela.hdr == NULL)
10509 return NULL;
10510 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10511 * sizeof (Elf64_External_Rela));
10512 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
176a0d42
AM		 10513 sec->reloc_count = 0;
10514 }
10515 relocs += sec->reloc_count;
10516 sec->reloc_count += count;
10517 return relocs;
10518}
10519
aa374f67 10520static bfd_vma
25f53a85 10521get_r2off (struct bfd_link_info *info,
aa374f67
AM		 10522 struct ppc_stub_hash_entry *stub_entry)
10523{
25f53a85 10524 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6f20ed8a 10525 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
aa374f67
AM		 10526
10527 if (r2off == 0)
10528 {
10529 /* Support linking -R objects. Get the toc pointer from the
10530 opd entry. */
10531 char buf[8];
b9e5796b
AM		 10532 if (!htab->opd_abi)
10533 return r2off;
aa374f67
AM		 10534 asection *opd = stub_entry->h->elf.root.u.def.section;
10535 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10536
10537 if (strcmp (opd->name, ".opd") != 0
10538 || opd->reloc_count != 0)
10539 {
bc30df16 10540 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
25f53a85 10541 stub_entry->h->elf.root.root.string);
aa374f67
AM		 10542 bfd_set_error (bfd_error_bad_value);
10543 return 0;
10544 }
10545 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10546 return 0;
10547 r2off = bfd_get_64 (opd->owner, buf);
25f53a85 10548 r2off -= elf_gp (info->output_bfd);
aa374f67 10549 }
6f20ed8a 10550 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
aa374f67
AM		 10551 return r2off;
10552}
10553
b34976b6 10554static bfd_boolean
4ce794b7 10555ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 10556{
721956f4
AM		 10557 struct ppc_stub_hash_entry *stub_entry;
10558 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 10559 struct bfd_link_info *info;
10560 struct ppc_link_hash_table *htab;
721956f4
AM		 10561 bfd_byte *loc;
10562 bfd_byte *p;
ee75fd95 10563 bfd_vma dest, off;
721956f4 10564 int size;
176a0d42 10565 Elf_Internal_Rela *r;
e054468f 10566 asection *plt;
5d1634d7 10567
721956f4
AM		 10568 /* Massage our args to the form they really have. */
10569 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 10570 info = in_arg;
5d1634d7 10571
5d1634d7 10572 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10573 if (htab == NULL)
10574 return FALSE;
5d1634d7 10575
721956f4 10576 /* Make a note of the offset within the stubs for this entry. */
6f20ed8a
AM		 10577 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10578 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
721956f4 10579
4ce794b7 10580 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 10581 switch (stub_entry->stub_type)
5d1634d7 10582 {
721956f4 10583 case ppc_stub_long_branch:
ad8e1ba5 10584 case ppc_stub_long_branch_r2off:
721956f4 10585 /* Branches are relative. This is where we are going to. */
6911b7dc
AM		 10586 dest = (stub_entry->target_value
10587 + stub_entry->target_section->output_offset
10588 + stub_entry->target_section->output_section->vma);
10589 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10590 off = dest;
5d1634d7 10591
721956f4
AM		 10592 /* And this is where we are coming from. */
10593 off -= (stub_entry->stub_offset
6f20ed8a
AM		 10594 + stub_entry->group->stub_sec->output_offset
10595 + stub_entry->group->stub_sec->output_section->vma);
e86ce104 10596
ac2df442
AM		 10597 size = 4;
10598 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5 10599 {
25f53a85 10600 bfd_vma r2off = get_r2off (info, stub_entry);
ad8e1ba5 10601
aa374f67
AM		 10602 if (r2off == 0)
10603 {
10604 htab->stub_error = TRUE;
10605 return FALSE;
10606 }
e7d1c40c 10607 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10608 loc += 4;
ac2df442
AM		 10609 size = 12;
10610 if (PPC_HA (r2off) != 0)
10611 {
10612 size = 16;
e7d1c40c
AM		 10613 bfd_put_32 (htab->params->stub_bfd,
10614 ADDIS_R2_R2 | PPC_HA (r2off), loc);
ac2df442
AM		 10615 loc += 4;
10616 }
e7d1c40c 10617 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 10618 loc += 4;
ac2df442 10619 off -= size - 4;
ad8e1ba5 10620 }
e7d1c40c 10621 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 10622
5c3dead3
AM		 10623 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10624 {
bc30df16
AM		 10625 info->callbacks->einfo
10626 (_("%P: long branch stub `%s' offset overflow\n"),
10627 stub_entry->root.string);
5c3dead3
AM		 10628 htab->stub_error = TRUE;
10629 return FALSE;
10630 }
ee75fd95
AM		 10631
10632 if (info->emitrelocations)
10633 {
6f20ed8a 10634 r = get_relocs (stub_entry->group->stub_sec, 1);
176a0d42
AM		 10635 if (r == NULL)
10636 return FALSE;
6f20ed8a 10637 r->r_offset = loc - stub_entry->group->stub_sec->contents;
ee75fd95
AM		 10638 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10639 r->r_addend = dest;
10640 if (stub_entry->h != NULL)
10641 {
10642 struct elf_link_hash_entry **hashes;
10643 unsigned long symndx;
10644 struct ppc_link_hash_entry *h;
10645
e7d1c40c 10646 hashes = elf_sym_hashes (htab->params->stub_bfd);
ee75fd95
AM		 10647 if (hashes == NULL)
10648 {
10649 bfd_size_type hsize;
10650
10651 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
e7d1c40c 10652 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
ee75fd95
AM		 10653 if (hashes == NULL)
10654 return FALSE;
e7d1c40c 10655 elf_sym_hashes (htab->params->stub_bfd) = hashes;
ee75fd95
AM		 10656 htab->stub_globals = 1;
10657 }
10658 symndx = htab->stub_globals++;
10659 h = stub_entry->h;
10660 hashes[symndx] = &h->elf;
10661 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10662 if (h->oh != NULL && h->oh->is_func)
b31867b6 10663 h = ppc_follow_link (h->oh);
ee75fd95
AM		 10664 if (h->elf.root.u.def.section != stub_entry->target_section)
10665 /* H is an opd symbol. The addend must be zero. */
10666 r->r_addend = 0;
10667 else
10668 {
10669 off = (h->elf.root.u.def.value
10670 + h->elf.root.u.def.section->output_offset
10671 + h->elf.root.u.def.section->output_section->vma);
10672 r->r_addend -= off;
10673 }
10674 }
10675 }
721956f4 10676 break;
e86ce104 10677
721956f4 10678 case ppc_stub_plt_branch:
ad8e1ba5 10679 case ppc_stub_plt_branch_r2off:
721956f4
AM		 10680 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10681 stub_entry->root.string + 9,
b34976b6 10682 FALSE, FALSE);
721956f4
AM		 10683 if (br_entry == NULL)
10684 {
8de848d8 10685 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
25f53a85 10686 stub_entry->root.string);
b34976b6
AM		 10687 htab->stub_error = TRUE;
10688 return FALSE;
721956f4
AM		 10689 }
10690
176a0d42
AM		 10691 dest = (stub_entry->target_value
10692 + stub_entry->target_section->output_offset
10693 + stub_entry->target_section->output_section->vma);
6911b7dc
AM		 10694 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10695 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
721956f4 10696
176a0d42 10697 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 10698 htab->brlt->contents + br_entry->offset);
721956f4 10699
f94498ff 10700 if (br_entry->iter == htab->stub_iteration)
721956f4 10701 {
f94498ff 10702 br_entry->iter = 0;
84f5d08e 10703
f94498ff 10704 if (htab->relbrlt != NULL)
84f5d08e 10705 {
f94498ff
AM		 10706 /* Create a reloc for the branch lookup table entry. */
10707 Elf_Internal_Rela rela;
10708 bfd_byte *rl;
10709
10710 rela.r_offset = (br_entry->offset
10711 + htab->brlt->output_offset
10712 + htab->brlt->output_section->vma);
10713 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10714 rela.r_addend = dest;
f94498ff
AM		 10715
10716 rl = htab->relbrlt->contents;
10717 rl += (htab->relbrlt->reloc_count++
10718 * sizeof (Elf64_External_Rela));
10719 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10720 }
10721 else if (info->emitrelocations)
10722 {
176a0d42
AM		 10723 r = get_relocs (htab->brlt, 1);
10724 if (r == NULL)
10725 return FALSE;
10726 /* brlt, being SEC_LINKER_CREATED does not go through the
10727 normal reloc processing. Symbols and offsets are not
10728 translated from input file to output file form, so
10729 set up the offset per the output file. */
f94498ff
AM		 10730 r->r_offset = (br_entry->offset
10731 + htab->brlt->output_offset
10732 + htab->brlt->output_section->vma);
10733 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10734 r->r_addend = dest;
84f5d08e 10735 }
84f5d08e 10736 }
721956f4 10737
176a0d42
AM		 10738 dest = (br_entry->offset
10739 + htab->brlt->output_offset
10740 + htab->brlt->output_section->vma);
10741
10742 off = (dest
4ce794b7 10743 - elf_gp (htab->brlt->output_section->owner)
6f20ed8a 10744 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
721956f4 10745
ad8e1ba5 10746 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7 10747 {
25f53a85 10748 info->callbacks->einfo
bc30df16 10749 (_("%P: linkage table error against `%T'\n"),
721956f4 10750 stub_entry->root.string);
5d1634d7 10751 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10752 htab->stub_error = TRUE;
10753 return FALSE;
5d1634d7 10754 }
41bd81ab 10755
176a0d42
AM		 10756 if (info->emitrelocations)
10757 {
6f20ed8a 10758 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
176a0d42
AM		 10759 if (r == NULL)
10760 return FALSE;
6f20ed8a 10761 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
7cfbafbc
AM		 10762 if (bfd_big_endian (info->output_bfd))
10763 r[0].r_offset += 2;
00f412ee 10764 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
176a0d42
AM		 10765 r[0].r_offset += 4;
10766 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10767 r[0].r_addend = dest;
10768 if (PPC_HA (off) != 0)
10769 {
10770 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10771 r[1].r_offset = r[0].r_offset + 4;
10772 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10773 r[1].r_addend = r[0].r_addend;
10774 }
10775 }
10776
00f412ee 10777 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ad8e1ba5 10778 {
176a0d42 10779 if (PPC_HA (off) != 0)
ac2df442
AM		 10780 {
10781 size = 16;
e7d1c40c 10782 bfd_put_32 (htab->params->stub_bfd,
397998fc 10783 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10784 loc += 4;
e7d1c40c 10785 bfd_put_32 (htab->params->stub_bfd,
397998fc 10786 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10787 }
10788 else
10789 {
10790 size = 12;
e7d1c40c
AM		 10791 bfd_put_32 (htab->params->stub_bfd,
10792 LD_R12_0R2 | PPC_LO (off), loc);
ac2df442 10793 }
ad8e1ba5
AM		 10794 }
10795 else
10796 {
25f53a85 10797 bfd_vma r2off = get_r2off (info, stub_entry);
aa374f67 10798
00f412ee 10799 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 10800 {
10801 htab->stub_error = TRUE;
10802 return FALSE;
10803 }
ad8e1ba5 10804
e7d1c40c 10805 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10806 loc += 4;
00f412ee 10807 size = 16;
176a0d42 10808 if (PPC_HA (off) != 0)
ac2df442
AM		 10809 {
10810 size += 4;
e7d1c40c 10811 bfd_put_32 (htab->params->stub_bfd,
397998fc 10812 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10813 loc += 4;
e7d1c40c 10814 bfd_put_32 (htab->params->stub_bfd,
397998fc 10815 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10816 }
10817 else
e7d1c40c 10818 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
ac2df442
AM		 10819
10820 if (PPC_HA (r2off) != 0)
10821 {
10822 size += 4;
00f412ee 10823 loc += 4;
e7d1c40c
AM		 10824 bfd_put_32 (htab->params->stub_bfd,
10825 ADDIS_R2_R2 | PPC_HA (r2off), loc);
00f412ee
AM		 10826 }
10827 if (PPC_LO (r2off) != 0)
10828 {
10829 size += 4;
ac2df442 10830 loc += 4;
e7d1c40c
AM		 10831 bfd_put_32 (htab->params->stub_bfd,
10832 ADDI_R2_R2 | PPC_LO (r2off), loc);
ac2df442 10833 }
ad8e1ba5
AM		 10834 }
10835 loc += 4;
e7d1c40c 10836 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
ad8e1ba5 10837 loc += 4;
e7d1c40c 10838 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
721956f4 10839 break;
5d1634d7 10840
721956f4 10841 case ppc_stub_plt_call:
794e51c0 10842 case ppc_stub_plt_call_r2save:
e054468f 10843 if (stub_entry->h != NULL
b31867b6
AM		 10844 && stub_entry->h->is_func_descriptor
10845 && stub_entry->h->oh != NULL)
c862ae31 10846 {
b31867b6
AM		 10847 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10848
10849 /* If the old-ABI "dot-symbol" is undefined make it weak so
6f20ed8a 10850 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
b31867b6
AM		 10851 if (fh->elf.root.type == bfd_link_hash_undefined)
10852 fh->elf.root.type = bfd_link_hash_undefweak;
9507a174
AM		 10853 /* Stop undo_symbol_twiddle changing it back to undefined. */
10854 fh->was_undefined = 0;
c862ae31
AM		 10855 }
10856
721956f4 10857 /* Now build the stub. */
e054468f 10858 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 10859 if (dest >= (bfd_vma) -2)
721956f4
AM		 10860 abort ();
10861
33e44f2e 10862 plt = htab->elf.splt;
25f23106
AM		 10863 if (!htab->elf.dynamic_sections_created
10864 || stub_entry->h == NULL
10865 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10866 plt = htab->elf.iplt;
e054468f
AM		 10867
10868 dest += plt->output_offset + plt->output_section->vma;
10869
10870 if (stub_entry->h == NULL
10871 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10872 {
10873 Elf_Internal_Rela rela;
10874 bfd_byte *rl;
10875
10876 rela.r_offset = dest;
ee67d69a
AM		 10877 if (htab->opd_abi)
10878 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10879 else
10880 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 10881 rela.r_addend = (stub_entry->target_value
10882 + stub_entry->target_section->output_offset
10883 + stub_entry->target_section->output_section->vma);
10884
33e44f2e
AM		 10885 rl = (htab->elf.irelplt->contents
10886 + (htab->elf.irelplt->reloc_count++
25f23106
AM		 10887 * sizeof (Elf64_External_Rela)));
10888 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM		 10889 stub_entry->plt_ent->plt.offset |= 1;
10890 }
176a0d42
AM		 10891
10892 off = (dest
e054468f 10893 - elf_gp (plt->output_section->owner)
6f20ed8a 10894 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
721956f4 10895
ad8e1ba5 10896 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4 10897 {
25f53a85 10898 info->callbacks->einfo
bc30df16 10899 (_("%P: linkage table error against `%T'\n"),
e054468f
AM		 10900 stub_entry->h != NULL
10901 ? stub_entry->h->elf.root.root.string
10902 : "<local sym>");
721956f4 10903 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10904 htab->stub_error = TRUE;
10905 return FALSE;
721956f4
AM		 10906 }
10907
e7d1c40c 10908 if (htab->params->plt_stub_align != 0)
794e51c0
AM		 10909 {
10910 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10911
6f20ed8a
AM		 10912 stub_entry->group->stub_sec->size += pad;
10913 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
794e51c0
AM		 10914 loc += pad;
10915 }
10916
176a0d42
AM		 10917 r = NULL;
10918 if (info->emitrelocations)
10919 {
6f20ed8a 10920 r = get_relocs (stub_entry->group->stub_sec,
3ba720c7
AM		 10921 ((PPC_HA (off) != 0)
10922 + (htab->opd_abi
e7d1c40c 10923 ? 2 + (htab->params->plt_static_chain
3ba720c7
AM		 10924 && PPC_HA (off + 16) == PPC_HA (off))
10925 : 1)));
176a0d42
AM		 10926 if (r == NULL)
10927 return FALSE;
6f20ed8a 10928 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
7cfbafbc
AM		 10929 if (bfd_big_endian (info->output_bfd))
10930 r[0].r_offset += 2;
176a0d42
AM		 10931 r[0].r_addend = dest;
10932 }
a7f2871e
AM		 10933 if (stub_entry->h != NULL
10934 && (stub_entry->h == htab->tls_get_addr_fd
10935 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10936 && !htab->params->no_tls_get_addr_opt)
794e51c0 10937 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
a7f2871e 10938 else
794e51c0 10939 p = build_plt_stub (htab, stub_entry, loc, off, r);
721956f4
AM		 10940 size = p - loc;
10941 break;
10942
10943 default:
10944 BFD_FAIL ();
b34976b6 10945 return FALSE;
721956f4
AM		 10946 }
10947
6f20ed8a 10948 stub_entry->group->stub_sec->size += size;
97b639ba 10949
e7d1c40c 10950 if (htab->params->emit_stub_syms)
97b639ba
AM		 10951 {
10952 struct elf_link_hash_entry *h;
ee75fd95
AM		 10953 size_t len1, len2;
10954 char *name;
10955 const char *const stub_str[] = { "long_branch",
10956 "long_branch_r2off",
10957 "plt_branch",
10958 "plt_branch_r2off",
794e51c0 10959 "plt_call",
ee75fd95
AM		 10960 "plt_call" };
10961
10962 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10963 len2 = strlen (stub_entry->root.string);
10964 name = bfd_malloc (len1 + len2 + 2);
10965 if (name == NULL)
10966 return FALSE;
10967 memcpy (name, stub_entry->root.string, 9);
10968 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10969 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10970 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 10971 if (h == NULL)
10972 return FALSE;
10973 if (h->root.type == bfd_link_hash_new)
10974 {
10975 h->root.type = bfd_link_hash_defined;
6f20ed8a 10976 h->root.u.def.section = stub_entry->group->stub_sec;
97b639ba 10977 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 10978 h->ref_regular = 1;
10979 h->def_regular = 1;
10980 h->ref_regular_nonweak = 1;
10981 h->forced_local = 1;
10982 h->non_elf = 0;
2ec55de3 10983 h->root.linker_def = 1;
97b639ba
AM		 10984 }
10985 }
10986
b34976b6 10987 return TRUE;
721956f4
AM		 10988}
10989
10990/* As above, but don't actually build the stub. Just bump offset so
10991 we know stub section sizes, and select plt_branch stubs where
10992 long_branch stubs won't do. */
10993
b34976b6 10994static bfd_boolean
4ce794b7 10995ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 10996{
10997 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 10998 struct bfd_link_info *info;
721956f4
AM		 10999 struct ppc_link_hash_table *htab;
11000 bfd_vma off;
11001 int size;
11002
11003 /* Massage our args to the form they really have. */
11004 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 11005 info = in_arg;
11006
11007 htab = ppc_hash_table (info);
4dfe6ac6
NC		 11008 if (htab == NULL)
11009 return FALSE;
721956f4 11010
794e51c0
AM		 11011 if (stub_entry->stub_type == ppc_stub_plt_call
11012 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
721956f4 11013 {
e054468f
AM		 11014 asection *plt;
11015 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 11016 if (off >= (bfd_vma) -2)
411e1bfb 11017 abort ();
33e44f2e 11018 plt = htab->elf.splt;
25f23106
AM		 11019 if (!htab->elf.dynamic_sections_created
11020 || stub_entry->h == NULL
11021 || stub_entry->h->elf.dynindx == -1)
33e44f2e 11022 plt = htab->elf.iplt;
e054468f
AM		 11023 off += (plt->output_offset
11024 + plt->output_section->vma
11025 - elf_gp (plt->output_section->owner)
6f20ed8a 11026 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
721956f4 11027
794e51c0 11028 size = plt_stub_size (htab, stub_entry, off);
e7d1c40c 11029 if (htab->params->plt_stub_align)
794e51c0 11030 size += plt_stub_pad (htab, stub_entry, off);
176a0d42
AM		 11031 if (info->emitrelocations)
11032 {
6f20ed8a 11033 stub_entry->group->stub_sec->reloc_count
b9e5796b
AM		 11034 += ((PPC_HA (off) != 0)
11035 + (htab->opd_abi
e7d1c40c 11036 ? 2 + (htab->params->plt_static_chain
b9e5796b
AM		 11037 && PPC_HA (off + 16) == PPC_HA (off))
11038 : 1));
6f20ed8a 11039 stub_entry->group->stub_sec->flags |= SEC_RELOC;
176a0d42 11040 }
721956f4
AM		 11041 }
11042 else
11043 {
ad8e1ba5
AM		 11044 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11045 variants. */
ac2df442 11046 bfd_vma r2off = 0;
6911b7dc 11047 bfd_vma local_off = 0;
ac2df442 11048
721956f4
AM		 11049 off = (stub_entry->target_value
11050 + stub_entry->target_section->output_offset
11051 + stub_entry->target_section->output_section->vma);
6f20ed8a
AM		 11052 off -= (stub_entry->group->stub_sec->size
11053 + stub_entry->group->stub_sec->output_offset
11054 + stub_entry->group->stub_sec->output_section->vma);
721956f4 11055
ad8e1ba5
AM		 11056 /* Reset the stub type from the plt variant in case we now
11057 can reach with a shorter stub. */
11058 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11059 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11060
11061 size = 4;
11062 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11063 {
25f53a85 11064 r2off = get_r2off (info, stub_entry);
b9e5796b 11065 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 11066 {
11067 htab->stub_error = TRUE;
11068 return FALSE;
11069 }
ac2df442
AM		 11070 size = 12;
11071 if (PPC_HA (r2off) != 0)
11072 size = 16;
11073 off -= size - 4;
ad8e1ba5
AM		 11074 }
11075
6911b7dc
AM		 11076 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11077
b9e5796b
AM		 11078 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11079 Do the same for -R objects without function descriptors. */
11080 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11081 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11082 && r2off == 0))
721956f4
AM		 11083 {
11084 struct ppc_branch_hash_entry *br_entry;
11085
11086 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11087 stub_entry->root.string + 9,
b34976b6 11088 TRUE, FALSE);
721956f4
AM		 11089 if (br_entry == NULL)
11090 {
8de848d8 11091 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
25f53a85 11092 stub_entry->root.string);
b34976b6
AM		 11093 htab->stub_error = TRUE;
11094 return FALSE;
721956f4
AM		 11095 }
11096
11097 if (br_entry->iter != htab->stub_iteration)
11098 {
11099 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 11100 br_entry->offset = htab->brlt->size;
11101 htab->brlt->size += 8;
63bc6f6c 11102
ee75fd95 11103 if (htab->relbrlt != NULL)
eea6121a 11104 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 11105 else if (info->emitrelocations)
11106 {
11107 htab->brlt->reloc_count += 1;
11108 htab->brlt->flags |= SEC_RELOC;
11109 }
721956f4 11110 }
ad8e1ba5
AM		 11111
11112 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 11113 off = (br_entry->offset
11114 + htab->brlt->output_offset
11115 + htab->brlt->output_section->vma
11116 - elf_gp (htab->brlt->output_section->owner)
6f20ed8a 11117 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
ac2df442 11118
176a0d42
AM		 11119 if (info->emitrelocations)
11120 {
6f20ed8a
AM		 11121 stub_entry->group->stub_sec->reloc_count
11122 += 1 + (PPC_HA (off) != 0);
11123 stub_entry->group->stub_sec->flags |= SEC_RELOC;
176a0d42
AM		 11124 }
11125
00f412ee 11126 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ac2df442
AM		 11127 {
11128 size = 12;
176a0d42 11129 if (PPC_HA (off) != 0)
ac2df442
AM		 11130 size = 16;
11131 }
11132 else
11133 {
00f412ee 11134 size = 16;
176a0d42 11135 if (PPC_HA (off) != 0)
ac2df442
AM		 11136 size += 4;
11137
11138 if (PPC_HA (r2off) != 0)
11139 size += 4;
00f412ee
AM		 11140 if (PPC_LO (r2off) != 0)
11141 size += 4;
ac2df442 11142 }
721956f4 11143 }
84f5d08e
AM		 11144 else if (info->emitrelocations)
11145 {
6f20ed8a
AM		 11146 stub_entry->group->stub_sec->reloc_count += 1;
11147 stub_entry->group->stub_sec->flags |= SEC_RELOC;
84f5d08e 11148 }
721956f4
AM		 11149 }
11150
6f20ed8a 11151 stub_entry->group->stub_sec->size += size;
b34976b6 11152 return TRUE;
721956f4
AM		 11153}
11154
11155/* Set up various things so that we can make a list of input sections
11156 for each output section included in the link. Returns -1 on error,
cedb70c5 11157 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 11158
11159int
e7d1c40c 11160ppc64_elf_setup_section_lists (struct bfd_link_info *info)
721956f4 11161{
6f20ed8a 11162 unsigned int id;
721956f4
AM		 11163 bfd_size_type amt;
11164 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11165
4dfe6ac6
NC		 11166 if (htab == NULL)
11167 return -1;
4c52953f 11168
6f20ed8a
AM		 11169 htab->sec_info_arr_size = bfd_get_next_section_id ();
11170 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11171 htab->sec_info = bfd_zmalloc (amt);
11172 if (htab->sec_info == NULL)
721956f4
AM		 11173 return -1;
11174
3d6f9012
AM		 11175 /* Set toc_off for com, und, abs and ind sections. */
11176 for (id = 0; id < 3; id++)
6f20ed8a 11177 htab->sec_info[id].toc_off = TOC_BASE_OFF;
734b6cf9 11178
721956f4
AM		 11179 return 1;
11180}
11181
927be08e
AM		 11182/* Set up for first pass at multitoc partitioning. */
11183
11184void
11185ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11186{
11187 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11188
1c865ab2 11189 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
927be08e
AM		 11190 htab->toc_bfd = NULL;
11191 htab->toc_first_sec = NULL;
11192}
11193
e717da7e
AM		 11194/* The linker repeatedly calls this function for each TOC input section
11195 and linker generated GOT section. Group input bfds such that the toc
927be08e 11196 within a group is less than 64k in size. */
ad8e1ba5 11197
927be08e 11198bfd_boolean
4ce794b7 11199ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 11200{
11201 struct ppc_link_hash_table *htab = ppc_hash_table (info);
d77c8a4b 11202 bfd_vma addr, off, limit;
ad8e1ba5 11203
4dfe6ac6
NC		 11204 if (htab == NULL)
11205 return FALSE;
11206
927be08e 11207 if (!htab->second_toc_pass)
4c52953f 11208 {
927be08e 11209 /* Keep track of the first .toc or .got section for this input bfd. */
a4fd3de5
AM		 11210 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11211
11212 if (new_bfd)
bf102f86
AM		 11213 {
11214 htab->toc_bfd = isec->owner;
11215 htab->toc_first_sec = isec;
11216 }
927be08e 11217
bf102f86
AM		 11218 addr = isec->output_offset + isec->output_section->vma;
11219 off = addr - htab->toc_curr;
d77c8a4b
AM		 11220 limit = 0x80008000;
11221 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11222 limit = 0x10000;
11223 if (off + isec->size > limit)
bf102f86
AM		 11224 {
11225 addr = (htab->toc_first_sec->output_offset
11226 + htab->toc_first_sec->output_section->vma);
11227 htab->toc_curr = addr;
a27e685f 11228 htab->toc_curr &= -TOC_BASE_ALIGN;
bf102f86 11229 }
99877b66 11230
927be08e
AM		 11231 /* toc_curr is the base address of this toc group. Set elf_gp
11232 for the input section to be the offset relative to the
11233 output toc base plus 0x8000. Making the input elf_gp an
11234 offset allows us to move the toc as a whole without
11235 recalculating input elf_gp. */
11236 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11237 off += TOC_BASE_OFF;
11238
11239 /* Die if someone uses a linker script that doesn't keep input
11240 file .toc and .got together. */
a4fd3de5
AM		 11241 if (new_bfd
11242 && elf_gp (isec->owner) != 0
927be08e
AM		 11243 && elf_gp (isec->owner) != off)
11244 return FALSE;
11245
11246 elf_gp (isec->owner) = off;
11247 return TRUE;
4c52953f 11248 }
927be08e
AM		 11249
11250 /* During the second pass toc_first_sec points to the start of
11251 a toc group, and toc_curr is used to track the old elf_gp.
11252 We use toc_bfd to ensure we only look at each bfd once. */
11253 if (htab->toc_bfd == isec->owner)
11254 return TRUE;
11255 htab->toc_bfd = isec->owner;
11256
11257 if (htab->toc_first_sec == NULL
11258 || htab->toc_curr != elf_gp (isec->owner))
11259 {
11260 htab->toc_curr = elf_gp (isec->owner);
11261 htab->toc_first_sec = isec;
11262 }
11263 addr = (htab->toc_first_sec->output_offset
11264 + htab->toc_first_sec->output_section->vma);
11265 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11266 elf_gp (isec->owner) = off;
11267
11268 return TRUE;
ad8e1ba5
AM		 11269}
11270
927be08e
AM		 11271/* Called via elf_link_hash_traverse to merge GOT entries for global
11272 symbol H. */
11273
11274static bfd_boolean
11275merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11276{
11277 if (h->root.type == bfd_link_hash_indirect)
11278 return TRUE;
11279
927be08e
AM		 11280 merge_got_entries (&h->got.glist);
11281
11282 return TRUE;
11283}
11284
11285/* Called via elf_link_hash_traverse to allocate GOT entries for global
11286 symbol H. */
11287
11288static bfd_boolean
11289reallocate_got (struct elf_link_hash_entry *h, void *inf)
11290{
11291 struct got_entry *gent;
11292
11293 if (h->root.type == bfd_link_hash_indirect)
11294 return TRUE;
11295
927be08e
AM		 11296 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11297 if (!gent->is_indirect)
11298 allocate_got (h, (struct bfd_link_info *) inf, gent);
11299 return TRUE;
11300}
11301
11302/* Called on the first multitoc pass after the last call to
11303 ppc64_elf_next_toc_section. This function removes duplicate GOT
11304 entries. */
11305
11306bfd_boolean
11307ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM		 11308{
11309 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM		 11310 struct bfd *ibfd, *ibfd2;
11311 bfd_boolean done_something;
11312
11313 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 11314
7865406b
AM		 11315 if (!htab->do_multi_toc)
11316 return FALSE;
11317
d0fae19d 11318 /* Merge global sym got entries within a toc group. */
927be08e
AM		 11319 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11320
11321 /* And tlsld_got. */
c72f2fb2 11322 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11323 {
11324 struct got_entry *ent, *ent2;
11325
11326 if (!is_ppc64_elf (ibfd))
11327 continue;
11328
11329 ent = ppc64_tlsld_got (ibfd);
11330 if (!ent->is_indirect
11331 && ent->got.offset != (bfd_vma) -1)
11332 {
c72f2fb2 11333 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
927be08e
AM		 11334 {
11335 if (!is_ppc64_elf (ibfd2))
11336 continue;
11337
11338 ent2 = ppc64_tlsld_got (ibfd2);
11339 if (!ent2->is_indirect
11340 && ent2->got.offset != (bfd_vma) -1
11341 && elf_gp (ibfd2) == elf_gp (ibfd))
11342 {
11343 ent2->is_indirect = TRUE;
11344 ent2->got.ent = ent;
11345 }
11346 }
11347 }
11348 }
11349
11350 /* Zap sizes of got sections. */
33e44f2e
AM		 11351 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11352 htab->elf.irelplt->size -= htab->got_reli_size;
927be08e
AM		 11353 htab->got_reli_size = 0;
11354
c72f2fb2 11355 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11356 {
11357 asection *got, *relgot;
11358
11359 if (!is_ppc64_elf (ibfd))
11360 continue;
11361
11362 got = ppc64_elf_tdata (ibfd)->got;
11363 if (got != NULL)
11364 {
11365 got->rawsize = got->size;
11366 got->size = 0;
11367 relgot = ppc64_elf_tdata (ibfd)->relgot;
11368 relgot->rawsize = relgot->size;
11369 relgot->size = 0;
11370 }
11371 }
11372
11373 /* Now reallocate the got, local syms first. We don't need to
11374 allocate section contents again since we never increase size. */
c72f2fb2 11375 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11376 {
11377 struct got_entry **lgot_ents;
11378 struct got_entry **end_lgot_ents;
11379 struct plt_entry **local_plt;
11380 struct plt_entry **end_local_plt;
f961d9dd 11381 unsigned char *lgot_masks;
927be08e
AM		 11382 bfd_size_type locsymcount;
11383 Elf_Internal_Shdr *symtab_hdr;
19e08130 11384 asection *s;
927be08e
AM		 11385
11386 if (!is_ppc64_elf (ibfd))
11387 continue;
11388
11389 lgot_ents = elf_local_got_ents (ibfd);
11390 if (!lgot_ents)
11391 continue;
11392
11393 symtab_hdr = &elf_symtab_hdr (ibfd);
11394 locsymcount = symtab_hdr->sh_info;
11395 end_lgot_ents = lgot_ents + locsymcount;
11396 local_plt = (struct plt_entry **) end_lgot_ents;
11397 end_local_plt = local_plt + locsymcount;
f961d9dd 11398 lgot_masks = (unsigned char *) end_local_plt;
927be08e 11399 s = ppc64_elf_tdata (ibfd)->got;
927be08e
AM		 11400 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11401 {
11402 struct got_entry *ent;
11403
11404 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
d0fae19d 11405 {
19e08130
AM		 11406 unsigned int ent_size = 8;
11407 unsigned int rel_size = sizeof (Elf64_External_Rela);
11408
d0fae19d
AM		 11409 ent->got.offset = s->size;
11410 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
d0fae19d 11411 {
19e08130
AM		 11412 ent_size *= 2;
11413 rel_size *= 2;
11414 }
11415 s->size += ent_size;
11416 if ((*lgot_masks & PLT_IFUNC) != 0)
11417 {
33e44f2e 11418 htab->elf.irelplt->size += rel_size;
19e08130
AM		 11419 htab->got_reli_size += rel_size;
11420 }
0e1862bb 11421 else if (bfd_link_pic (info))
19e08130
AM		 11422 {
11423 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11424 srel->size += rel_size;
d0fae19d
AM		 11425 }
11426 }
927be08e
AM		 11427 }
11428 }
11429
11430 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11431
c72f2fb2 11432 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11433 {
11434 struct got_entry *ent;
11435
11436 if (!is_ppc64_elf (ibfd))
11437 continue;
11438
11439 ent = ppc64_tlsld_got (ibfd);
11440 if (!ent->is_indirect
11441 && ent->got.offset != (bfd_vma) -1)
11442 {
11443 asection *s = ppc64_elf_tdata (ibfd)->got;
11444 ent->got.offset = s->size;
11445 s->size += 16;
0e1862bb 11446 if (bfd_link_pic (info))
927be08e
AM		 11447 {
11448 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11449 srel->size += sizeof (Elf64_External_Rela);
11450 }
11451 }
11452 }
11453
33e44f2e 11454 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
927be08e 11455 if (!done_something)
c72f2fb2 11456 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11457 {
11458 asection *got;
11459
11460 if (!is_ppc64_elf (ibfd))
11461 continue;
11462
11463 got = ppc64_elf_tdata (ibfd)->got;
11464 if (got != NULL)
11465 {
11466 done_something = got->rawsize != got->size;
11467 if (done_something)
11468 break;
11469 }
11470 }
11471
11472 if (done_something)
e7d1c40c 11473 (*htab->params->layout_sections_again) ();
927be08e
AM		 11474
11475 /* Set up for second pass over toc sections to recalculate elf_gp
11476 on input sections. */
11477 htab->toc_bfd = NULL;
11478 htab->toc_first_sec = NULL;
11479 htab->second_toc_pass = TRUE;
11480 return done_something;
11481}
11482
11483/* Called after second pass of multitoc partitioning. */
11484
11485void
11486ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11487{
11488 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11489
11490 /* After the second pass, toc_curr tracks the TOC offset used
11491 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 11492 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 11493}
11494
9b5ecbd0
AM		 11495/* No toc references were found in ISEC. If the code in ISEC makes no
11496 calls, then there's no need to use toc adjusting stubs when branching
11497 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 11498 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11499 needed, and 2 if a cyclical call-graph was found but no other reason
11500 for a stub was detected. If called from the top level, a return of
11501 2 means the same as a return of 0. */
9b5ecbd0
AM		 11502
11503static int
4ce794b7 11504toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 11505{
9b5ecbd0 11506 int ret;
70cc837d
AM		 11507
11508 /* Mark this section as checked. */
11509 isec->call_check_done = 1;
9b5ecbd0 11510
772119ce
AM		 11511 /* We know none of our code bearing sections will need toc stubs. */
11512 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11513 return 0;
11514
eea6121a 11515 if (isec->size == 0)
082c50f8
AM		 11516 return 0;
11517
4c52953f
AM		 11518 if (isec->output_section == NULL)
11519 return 0;
11520
4c52953f 11521 ret = 0;
70cc837d 11522 if (isec->reloc_count != 0)
9b5ecbd0 11523 {
70cc837d
AM		 11524 Elf_Internal_Rela *relstart, *rel;
11525 Elf_Internal_Sym *local_syms;
11526 struct ppc_link_hash_table *htab;
2917689a 11527
70cc837d
AM		 11528 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11529 info->keep_memory);
11530 if (relstart == NULL)
11531 return -1;
90aecf7a 11532
70cc837d
AM		 11533 /* Look for branches to outside of this section. */
11534 local_syms = NULL;
11535 htab = ppc_hash_table (info);
11536 if (htab == NULL)
11537 return -1;
4c52953f 11538
70cc837d 11539 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
4c52953f 11540 {
70cc837d
AM		 11541 enum elf_ppc64_reloc_type r_type;
11542 unsigned long r_symndx;
11543 struct elf_link_hash_entry *h;
11544 struct ppc_link_hash_entry *eh;
11545 Elf_Internal_Sym *sym;
11546 asection *sym_sec;
11547 struct _opd_sec_data *opd;
11548 bfd_vma sym_value;
11549 bfd_vma dest;
11550
11551 r_type = ELF64_R_TYPE (rel->r_info);
11552 if (r_type != R_PPC64_REL24
11553 && r_type != R_PPC64_REL14
11554 && r_type != R_PPC64_REL14_BRTAKEN
11555 && r_type != R_PPC64_REL14_BRNTAKEN)
11556 continue;
4c52953f 11557
70cc837d
AM		 11558 r_symndx = ELF64_R_SYM (rel->r_info);
11559 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11560 isec->owner))
4c52953f 11561 {
70cc837d
AM		 11562 ret = -1;
11563 break;
11564 }
4c52953f 11565
70cc837d
AM		 11566 /* Calls to dynamic lib functions go through a plt call stub
11567 that uses r2. */
11568 eh = (struct ppc_link_hash_entry *) h;
11569 if (eh != NULL
11570 && (eh->elf.plt.plist != NULL
11571 || (eh->oh != NULL
11572 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11573 {
11574 ret = 1;
11575 break;
4c52953f
AM		 11576 }
11577
70cc837d
AM		 11578 if (sym_sec == NULL)
11579 /* Ignore other undefined symbols. */
4c52953f 11580 continue;
4c52953f 11581
70cc837d
AM		 11582 /* Assume branches to other sections not included in the
11583 link need stubs too, to cover -R and absolute syms. */
11584 if (sym_sec->output_section == NULL)
11585 {
11586 ret = 1;
11587 break;
11588 }
4c52953f 11589
70cc837d
AM		 11590 if (h == NULL)
11591 sym_value = sym->st_value;
11592 else
11593 {
11594 if (h->root.type != bfd_link_hash_defined
11595 && h->root.type != bfd_link_hash_defweak)
11596 abort ();
11597 sym_value = h->root.u.def.value;
11598 }
11599 sym_value += rel->r_addend;
4c52953f 11600
70cc837d
AM		 11601 /* If this branch reloc uses an opd sym, find the code section. */
11602 opd = get_opd_info (sym_sec);
11603 if (opd != NULL)
11604 {
11605 if (h == NULL && opd->adjust != NULL)
11606 {
11607 long adjust;
4c52953f 11608
92a9c616 11609 adjust = opd->adjust[OPD_NDX (sym_value)];
70cc837d
AM		 11610 if (adjust == -1)
11611 /* Assume deleted functions won't ever be called. */
11612 continue;
11613 sym_value += adjust;
11614 }
4c52953f 11615
aef36ac1
AM		 11616 dest = opd_entry_value (sym_sec, sym_value,
11617 &sym_sec, NULL, FALSE);
70cc837d
AM		 11618 if (dest == (bfd_vma) -1)
11619 continue;
11620 }
11621 else
11622 dest = (sym_value
11623 + sym_sec->output_offset
11624 + sym_sec->output_section->vma);
4c52953f 11625
70cc837d
AM		 11626 /* Ignore branch to self. */
11627 if (sym_sec == isec)
11628 continue;
4c52953f 11629
70cc837d
AM		 11630 /* If the called function uses the toc, we need a stub. */
11631 if (sym_sec->has_toc_reloc
11632 || sym_sec->makes_toc_func_call)
4c52953f 11633 {
70cc837d 11634 ret = 1;
4c52953f
AM		 11635 break;
11636 }
70cc837d
AM		 11637
11638 /* Assume any branch that needs a long branch stub might in fact
11639 need a plt_branch stub. A plt_branch stub uses r2. */
11640 else if (dest - (isec->output_offset
11641 + isec->output_section->vma
6911b7dc
AM		 11642 + rel->r_offset) + (1 << 25)
11643 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11644 ? h->other
11645 : sym->st_other))
4c52953f 11646 {
70cc837d
AM		 11647 ret = 1;
11648 break;
11649 }
11650
11651 /* If calling back to a section in the process of being
11652 tested, we can't say for sure that no toc adjusting stubs
11653 are needed, so don't return zero. */
11654 else if (sym_sec->call_check_in_progress)
11655 ret = 2;
11656
11657 /* Branches to another section that itself doesn't have any TOC
11658 references are OK. Recursively call ourselves to check. */
11659 else if (!sym_sec->call_check_done)
11660 {
11661 int recur;
11662
11663 /* Mark current section as indeterminate, so that other
11664 sections that call back to current won't be marked as
11665 known. */
11666 isec->call_check_in_progress = 1;
11667 recur = toc_adjusting_stub_needed (info, sym_sec);
11668 isec->call_check_in_progress = 0;
11669
4c52953f
AM		 11670 if (recur != 0)
11671 {
70cc837d
AM		 11672 ret = recur;
11673 if (recur != 2)
11674 break;
4c52953f
AM		 11675 }
11676 }
4c52953f 11677 }
70cc837d
AM		 11678
11679 if (local_syms != NULL
11680 && (elf_symtab_hdr (isec->owner).contents
11681 != (unsigned char *) local_syms))
11682 free (local_syms);
11683 if (elf_section_data (isec)->relocs != relstart)
11684 free (relstart);
9b5ecbd0
AM		 11685 }
11686
70cc837d
AM		 11687 if ((ret & 1) == 0
11688 && isec->map_head.s != NULL
11689 && (strcmp (isec->output_section->name, ".init") == 0
11690 || strcmp (isec->output_section->name, ".fini") == 0))
11691 {
11692 if (isec->map_head.s->has_toc_reloc
11693 || isec->map_head.s->makes_toc_func_call)
11694 ret = 1;
11695 else if (!isec->map_head.s->call_check_done)
11696 {
11697 int recur;
11698 isec->call_check_in_progress = 1;
11699 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11700 isec->call_check_in_progress = 0;
11701 if (recur != 0)
11702 ret = recur;
11703 }
11704 }
11705
11706 if (ret == 1)
11707 isec->makes_toc_func_call = 1;
4c52953f 11708
9b5ecbd0
AM		 11709 return ret;
11710}
11711
721956f4
AM		 11712/* The linker repeatedly calls this function for each input section,
11713 in the order that input sections are linked into output sections.
11714 Build lists of input sections to determine groupings between which
11715 we may insert linker stubs. */
11716
9b5ecbd0 11717bfd_boolean
4ce794b7 11718ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 11719{
11720 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11721
4dfe6ac6
NC		 11722 if (htab == NULL)
11723 return FALSE;
11724
734b6cf9 11725 if ((isec->output_section->flags & SEC_CODE) != 0
6f20ed8a 11726 && isec->output_section->id < htab->sec_info_arr_size)
721956f4 11727 {
3d6f9012
AM		 11728 /* This happens to make the list in reverse order,
11729 which is what we want. */
6f20ed8a
AM		 11730 htab->sec_info[isec->id].u.list
11731 = htab->sec_info[isec->output_section->id].u.list;
11732 htab->sec_info[isec->output_section->id].u.list = isec;
721956f4 11733 }
ad8e1ba5 11734
4c52953f 11735 if (htab->multi_toc_needed)
9b5ecbd0 11736 {
8b974ba3
AM		 11737 /* Analyse sections that aren't already flagged as needing a
11738 valid toc pointer. Exclude .fixup for the linux kernel.
11739 .fixup contains branches, but only back to the function that
11740 hit an exception. */
11741 if (!(isec->has_toc_reloc
11742 || (isec->flags & SEC_CODE) == 0
11743 || strcmp (isec->name, ".fixup") == 0
11744 || isec->call_check_done))
11745 {
11746 if (toc_adjusting_stub_needed (info, isec) < 0)
6683a28d 11747 return FALSE;
8b974ba3
AM		 11748 }
11749 /* Make all sections use the TOC assigned for this object file.
11750 This will be wrong for pasted sections; We fix that in
11751 check_pasted_section(). */
11752 if (elf_gp (isec->owner) != 0)
11753 htab->toc_curr = elf_gp (isec->owner);
11754 }
11755
6f20ed8a 11756 htab->sec_info[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 11757 return TRUE;
721956f4
AM		 11758}
11759
70cc837d
AM		 11760/* Check that all .init and .fini sections use the same toc, if they
11761 have toc relocs. */
11762
11763static bfd_boolean
11764check_pasted_section (struct bfd_link_info *info, const char *name)
11765{
11766 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11767
11768 if (o != NULL)
11769 {
11770 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11771 bfd_vma toc_off = 0;
11772 asection *i;
11773
11774 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11775 if (i->has_toc_reloc)
11776 {
11777 if (toc_off == 0)
6f20ed8a
AM		 11778 toc_off = htab->sec_info[i->id].toc_off;
11779 else if (toc_off != htab->sec_info[i->id].toc_off)
70cc837d
AM		 11780 return FALSE;
11781 }
6683a28d
AM		 11782
11783 if (toc_off == 0)
11784 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11785 if (i->makes_toc_func_call)
11786 {
6f20ed8a 11787 toc_off = htab->sec_info[i->id].toc_off;
6683a28d
AM		 11788 break;
11789 }
11790
70cc837d
AM		 11791 /* Make sure the whole pasted function uses the same toc offset. */
11792 if (toc_off != 0)
11793 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
6f20ed8a 11794 htab->sec_info[i->id].toc_off = toc_off;
70cc837d
AM		 11795 }
11796 return TRUE;
11797}
11798
11799bfd_boolean
11800ppc64_elf_check_init_fini (struct bfd_link_info *info)
11801{
11802 return (check_pasted_section (info, ".init")
11803 & check_pasted_section (info, ".fini"));
11804}
11805
721956f4
AM		 11806/* See whether we can group stub sections together. Grouping stub
11807 sections may result in fewer stubs. More importantly, we need to
11808 put all .init* and .fini* stubs at the beginning of the .init or
11809 .fini output sections respectively, because glibc splits the
11810 _init and _fini functions into multiple parts. Putting a stub in
11811 the middle of a function is not a good idea. */
11812
6f20ed8a
AM		 11813static bfd_boolean
11814group_sections (struct bfd_link_info *info,
4ce794b7
AM		 11815 bfd_size_type stub_group_size,
11816 bfd_boolean stubs_always_before_branch)
721956f4 11817{
6f20ed8a
AM		 11818 struct ppc_link_hash_table *htab;
11819 asection *osec;
7c8fe5c4
AM		 11820 bfd_size_type stub14_group_size;
11821 bfd_boolean suppress_size_errors;
11822
6f20ed8a
AM		 11823 htab = ppc_hash_table (info);
11824 if (htab == NULL)
11825 return FALSE;
11826
7c8fe5c4 11827 suppress_size_errors = FALSE;
0cfb0717 11828 stub14_group_size = stub_group_size >> 10;
7c8fe5c4
AM		 11829 if (stub_group_size == 1)
11830 {
11831 /* Default values. */
11832 if (stubs_always_before_branch)
11833 {
11834 stub_group_size = 0x1e00000;
11835 stub14_group_size = 0x7800;
11836 }
11837 else
11838 {
11839 stub_group_size = 0x1c00000;
11840 stub14_group_size = 0x7000;
11841 }
11842 suppress_size_errors = TRUE;
11843 }
11844
6f20ed8a 11845 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
721956f4 11846 {
6f20ed8a
AM		 11847 asection *tail;
11848
11849 if (osec->id >= htab->sec_info_arr_size)
11850 continue;
11851
11852 tail = htab->sec_info[osec->id].u.list;
734b6cf9 11853 while (tail != NULL)
721956f4 11854 {
734b6cf9
AM		 11855 asection *curr;
11856 asection *prev;
11857 bfd_size_type total;
11858 bfd_boolean big_sec;
11859 bfd_vma curr_toc;
6f20ed8a 11860 struct map_stub *group;
734b6cf9
AM		 11861
11862 curr = tail;
eea6121a 11863 total = tail->size;
6bee8834
AM		 11864 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11865 && ppc64_elf_section_data (tail)->has_14bit_branch
7c8fe5c4
AM		 11866 ? stub14_group_size : stub_group_size);
11867 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 11868 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11869 tail->owner, tail);
6f20ed8a 11870 curr_toc = htab->sec_info[tail->id].toc_off;
734b6cf9 11871
6f20ed8a 11872 while ((prev = htab->sec_info[curr->id].u.list) != NULL
734b6cf9 11873 && ((total += curr->output_offset - prev->output_offset)
6bee8834
AM		 11874 < (ppc64_elf_section_data (prev) != NULL
11875 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11876 ? stub14_group_size : stub_group_size))
6f20ed8a 11877 && htab->sec_info[prev->id].toc_off == curr_toc)
734b6cf9
AM		 11878 curr = prev;
11879
11880 /* OK, the size from the start of CURR to the end is less
11881 than stub_group_size and thus can be handled by one stub
11882 section. (or the tail section is itself larger than
11883 stub_group_size, in which case we may be toast.) We
11884 should really be keeping track of the total size of stubs
11885 added here, as stubs contribute to the final output
11886 section size. That's a little tricky, and this way will
11887 only break if stubs added make the total size more than
11888 2^25, ie. for the default stub_group_size, if stubs total
11889 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6f20ed8a
AM		 11890 group = bfd_alloc (curr->owner, sizeof (*group));
11891 if (group == NULL)
11892 return FALSE;
11893 group->link_sec = curr;
11894 group->stub_sec = NULL;
734b6cf9 11895 do
721956f4 11896 {
6f20ed8a 11897 prev = htab->sec_info[tail->id].u.list;
734b6cf9 11898 /* Set up this stub group. */
6f20ed8a 11899 htab->sec_info[tail->id].u.group = group;
721956f4 11900 }
734b6cf9
AM		 11901 while (tail != curr && (tail = prev) != NULL);
11902
11903 /* But wait, there's more! Input sections up to stub_group_size
11904 bytes before the stub section can be handled by it too.
11905 Don't do this if we have a really large section after the
11906 stubs, as adding more stubs increases the chance that
11907 branches may not reach into the stub section. */
11908 if (!stubs_always_before_branch && !big_sec)
11909 {
11910 total = 0;
11911 while (prev != NULL
11912 && ((total += tail->output_offset - prev->output_offset)
6bee8834
AM		 11913 < (ppc64_elf_section_data (prev) != NULL
11914 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11915 ? stub14_group_size : stub_group_size))
6f20ed8a 11916 && htab->sec_info[prev->id].toc_off == curr_toc)
734b6cf9
AM		 11917 {
11918 tail = prev;
6f20ed8a
AM		 11919 prev = htab->sec_info[tail->id].u.list;
11920 htab->sec_info[tail->id].u.group = group;
734b6cf9
AM		 11921 }
11922 }
11923 tail = prev;
721956f4
AM		 11924 }
11925 }
6f20ed8a 11926 return TRUE;
721956f4
AM		 11927}
11928
58d180e8
AM		 11929static const unsigned char glink_eh_frame_cie[] =
11930{
11931 0, 0, 0, 16, /* length. */
11932 0, 0, 0, 0, /* id. */
11933 1, /* CIE version. */
11934 'z', 'R', 0, /* Augmentation string. */
11935 4, /* Code alignment. */
11936 0x78, /* Data alignment. */
11937 65, /* RA reg. */
11938 1, /* Augmentation size. */
11939 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
da44f4e5
AM		 11940 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
11941 0, 0, 0, 0
58d180e8
AM		 11942};
11943
d969d15f
AM		 11944/* Stripping output sections is normally done before dynamic section
11945 symbols have been allocated. This function is called later, and
11946 handles cases like htab->brlt which is mapped to its own output
11947 section. */
11948
11949static void
11950maybe_strip_output (struct bfd_link_info *info, asection *isec)
11951{
11952 if (isec->size == 0
11953 && isec->output_section->size == 0
53d8967a 11954 && !(isec->output_section->flags & SEC_KEEP)
d969d15f
AM		 11955 && !bfd_section_removed_from_list (info->output_bfd,
11956 isec->output_section)
11957 && elf_section_data (isec->output_section)->dynindx == 0)
11958 {
11959 isec->output_section->flags |= SEC_EXCLUDE;
11960 bfd_section_list_remove (info->output_bfd, isec->output_section);
11961 info->output_bfd->section_count--;
11962 }
11963}
11964
721956f4
AM		 11965/* Determine and set the size of the stub section for a final link.
11966
11967 The basic idea here is to examine all the relocations looking for
11968 PC-relative calls to a target that is unreachable with a "bl"
11969 instruction. */
11970
b34976b6 11971bfd_boolean
e7d1c40c 11972ppc64_elf_size_stubs (struct bfd_link_info *info)
721956f4
AM		 11973{
11974 bfd_size_type stub_group_size;
b34976b6 11975 bfd_boolean stubs_always_before_branch;
721956f4
AM		 11976 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11977
4dfe6ac6
NC		 11978 if (htab == NULL)
11979 return FALSE;
11980
0e1862bb 11981 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
e7d1c40c 11982 htab->params->plt_thread_safe = 1;
b9e5796b 11983 if (!htab->opd_abi)
e7d1c40c
AM		 11984 htab->params->plt_thread_safe = 0;
11985 else if (htab->params->plt_thread_safe == -1)
794e51c0 11986 {
e2458743 11987 static const char *const thread_starter[] =
794e51c0
AM		 11988 {
11989 "pthread_create",
11990 /* libstdc++ */
11991 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11992 /* librt */
11993 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11994 "mq_notify", "create_timer",
11995 /* libanl */
11996 "getaddrinfo_a",
11997 /* libgomp */
2300b5a1 11998 "GOMP_parallel",
794e51c0 11999 "GOMP_parallel_start",
2300b5a1 12000 "GOMP_parallel_loop_static",
794e51c0 12001 "GOMP_parallel_loop_static_start",
2300b5a1 12002 "GOMP_parallel_loop_dynamic",
794e51c0 12003 "GOMP_parallel_loop_dynamic_start",
2300b5a1 12004 "GOMP_parallel_loop_guided",
794e51c0 12005 "GOMP_parallel_loop_guided_start",
2300b5a1 12006 "GOMP_parallel_loop_runtime",
794e51c0 12007 "GOMP_parallel_loop_runtime_start",
2300b5a1 12008 "GOMP_parallel_sections",
68ffbac6 12009 "GOMP_parallel_sections_start",
f9dffbf0
AM		 12010 /* libgo */
12011 "__go_go",
794e51c0
AM		 12012 };
12013 unsigned i;
12014
12015 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
12016 {
12017 struct elf_link_hash_entry *h;
12018 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12019 FALSE, FALSE, TRUE);
e7d1c40c
AM		 12020 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12021 if (htab->params->plt_thread_safe)
794e51c0
AM		 12022 break;
12023 }
12024 }
e7d1c40c
AM		 12025 stubs_always_before_branch = htab->params->group_size < 0;
12026 if (htab->params->group_size < 0)
12027 stub_group_size = -htab->params->group_size;
721956f4 12028 else
e7d1c40c 12029 stub_group_size = htab->params->group_size;
721956f4 12030
6f20ed8a
AM		 12031 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12032 return FALSE;
721956f4 12033
721956f4
AM		 12034 while (1)
12035 {
12036 bfd *input_bfd;
12037 unsigned int bfd_indx;
12038 asection *stub_sec;
721956f4
AM		 12039
12040 htab->stub_iteration += 1;
721956f4
AM		 12041
12042 for (input_bfd = info->input_bfds, bfd_indx = 0;
12043 input_bfd != NULL;
c72f2fb2 12044 input_bfd = input_bfd->link.next, bfd_indx++)
721956f4
AM		 12045 {
12046 Elf_Internal_Shdr *symtab_hdr;
12047 asection *section;
6cdc0ccc 12048 Elf_Internal_Sym *local_syms = NULL;
721956f4 12049
0c8d6e5c 12050 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 12051 continue;
12052
721956f4 12053 /* We'll need the symbol table in a second. */
0ffa91dd 12054 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 12055 if (symtab_hdr->sh_info == 0)
12056 continue;
12057
721956f4
AM		 12058 /* Walk over each section attached to the input bfd. */
12059 for (section = input_bfd->sections;
12060 section != NULL;
12061 section = section->next)
12062 {
721956f4 12063 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 12064
12065 /* If there aren't any relocs, then there's nothing more
12066 to do. */
12067 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 12068 || (section->flags & SEC_ALLOC) == 0
12069 || (section->flags & SEC_LOAD) == 0
12070 || (section->flags & SEC_CODE) == 0
721956f4
AM		 12071 || section->reloc_count == 0)
12072 continue;
12073
12074 /* If this section is a link-once section that will be
12075 discarded, then don't create any stubs. */
12076 if (section->output_section == NULL
927be08e 12077 || section->output_section->owner != info->output_bfd)
721956f4
AM		 12078 continue;
12079
1e2f5b6e
AM		 12080 /* Get the relocs. */
12081 internal_relocs
4ce794b7 12082 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 12083 info->keep_memory);
721956f4 12084 if (internal_relocs == NULL)
1e2f5b6e 12085 goto error_ret_free_local;
721956f4
AM		 12086
12087 /* Now examine each relocation. */
12088 irela = internal_relocs;
12089 irelaend = irela + section->reloc_count;
12090 for (; irela < irelaend; irela++)
12091 {
4ce794b7
AM		 12092 enum elf_ppc64_reloc_type r_type;
12093 unsigned int r_indx;
721956f4
AM		 12094 enum ppc_stub_type stub_type;
12095 struct ppc_stub_hash_entry *stub_entry;
8387904d 12096 asection *sym_sec, *code_sec;
e054468f 12097 bfd_vma sym_value, code_value;
721956f4 12098 bfd_vma destination;
6911b7dc 12099 unsigned long local_off;
8843416a 12100 bfd_boolean ok_dest;
721956f4 12101 struct ppc_link_hash_entry *hash;
8387904d 12102 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 12103 struct elf_link_hash_entry *h;
12104 Elf_Internal_Sym *sym;
721956f4
AM		 12105 char *stub_name;
12106 const asection *id_sec;
74f0fb50 12107 struct _opd_sec_data *opd;
e054468f 12108 struct plt_entry *plt_ent;
721956f4
AM		 12109
12110 r_type = ELF64_R_TYPE (irela->r_info);
12111 r_indx = ELF64_R_SYM (irela->r_info);
12112
4ce794b7 12113 if (r_type >= R_PPC64_max)
721956f4
AM		 12114 {
12115 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 12116 goto error_ret_free_internal;
721956f4
AM		 12117 }
12118
12119 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 12120 if (r_type != R_PPC64_REL24
12121 && r_type != R_PPC64_REL14
12122 && r_type != R_PPC64_REL14_BRTAKEN
12123 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 12124 continue;
12125
12126 /* Now determine the call target, its name, value,
12127 section. */
411e1bfb
AM		 12128 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12129 r_indx, input_bfd))
12130 goto error_ret_free_internal;
12131 hash = (struct ppc_link_hash_entry *) h;
12132
8843416a 12133 ok_dest = FALSE;
8387904d 12134 fdh = NULL;
7fe2b9a6 12135 sym_value = 0;
411e1bfb 12136 if (hash == NULL)
721956f4 12137 {
411e1bfb 12138 sym_value = sym->st_value;
8843416a 12139 ok_dest = TRUE;
721956f4 12140 }
7fe2b9a6
AM		 12141 else if (hash->elf.root.type == bfd_link_hash_defined
12142 || hash->elf.root.type == bfd_link_hash_defweak)
12143 {
12144 sym_value = hash->elf.root.u.def.value;
12145 if (sym_sec->output_section != NULL)
12146 ok_dest = TRUE;
12147 }
12148 else if (hash->elf.root.type == bfd_link_hash_undefweak
12149 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 12150 {
99877b66 12151 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 12152 use the func descriptor sym instead if it is
12153 defined. */
ceb1f1ef 12154 if (hash->elf.root.root.string[0] == '.'
b31867b6 12155 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 12156 {
8387904d
AM		 12157 if (fdh->elf.root.type == bfd_link_hash_defined
12158 || fdh->elf.root.type == bfd_link_hash_defweak)
12159 {
12160 sym_sec = fdh->elf.root.u.def.section;
12161 sym_value = fdh->elf.root.u.def.value;
12162 if (sym_sec->output_section != NULL)
12163 ok_dest = TRUE;
12164 }
99877b66
AM		 12165 else
12166 fdh = NULL;
8387904d 12167 }
7fe2b9a6
AM		 12168 }
12169 else
12170 {
12171 bfd_set_error (bfd_error_bad_value);
12172 goto error_ret_free_internal;
721956f4
AM		 12173 }
12174
8843416a 12175 destination = 0;
6911b7dc 12176 local_off = 0;
8843416a
AM		 12177 if (ok_dest)
12178 {
12179 sym_value += irela->r_addend;
12180 destination = (sym_value
12181 + sym_sec->output_offset
12182 + sym_sec->output_section->vma);
6911b7dc
AM		 12183 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12184 ? hash->elf.other
12185 : sym->st_other);
8843416a
AM		 12186 }
12187
8387904d 12188 code_sec = sym_sec;
e054468f 12189 code_value = sym_value;
74f0fb50
AM		 12190 opd = get_opd_info (sym_sec);
12191 if (opd != NULL)
8387904d
AM		 12192 {
12193 bfd_vma dest;
12194
74f0fb50 12195 if (hash == NULL && opd->adjust != NULL)
8387904d 12196 {
51aecdc5 12197 long adjust = opd->adjust[OPD_NDX (sym_value)];
8387904d
AM		 12198 if (adjust == -1)
12199 continue;
e054468f 12200 code_value += adjust;
8387904d
AM		 12201 sym_value += adjust;
12202 }
12203 dest = opd_entry_value (sym_sec, sym_value,
aef36ac1 12204 &code_sec, &code_value, FALSE);
8387904d
AM		 12205 if (dest != (bfd_vma) -1)
12206 {
12207 destination = dest;
12208 if (fdh != NULL)
12209 {
12210 /* Fixup old ABI sym to point at code
12211 entry. */
99877b66 12212 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 12213 hash->elf.root.u.def.section = code_sec;
e054468f 12214 hash->elf.root.u.def.value = code_value;
8387904d
AM		 12215 }
12216 }
12217 }
12218
721956f4 12219 /* Determine what (if any) linker stub is needed. */
e054468f 12220 plt_ent = NULL;
721956f4 12221 stub_type = ppc_type_of_stub (section, irela, &hash,
6911b7dc
AM		 12222 &plt_ent, destination,
12223 local_off);
ad8e1ba5
AM		 12224
12225 if (stub_type != ppc_stub_plt_call)
12226 {
12227 /* Check whether we need a TOC adjusting stub.
12228 Since the linker pastes together pieces from
12229 different object files when creating the
12230 _init and _fini functions, it may be that a
12231 call to what looks like a local sym is in
12232 fact a call needing a TOC adjustment. */
8387904d
AM		 12233 if (code_sec != NULL
12234 && code_sec->output_section != NULL
6f20ed8a
AM		 12235 && (htab->sec_info[code_sec->id].toc_off
12236 != htab->sec_info[section->id].toc_off)
4c52953f
AM		 12237 && (code_sec->has_toc_reloc
12238 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 12239 stub_type = ppc_stub_long_branch_r2off;
12240 }
12241
721956f4
AM		 12242 if (stub_type == ppc_stub_none)
12243 continue;
12244
411e1bfb
AM		 12245 /* __tls_get_addr calls might be eliminated. */
12246 if (stub_type != ppc_stub_plt_call
12247 && hash != NULL
8387904d
AM		 12248 && (hash == htab->tls_get_addr
12249 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 12250 && section->has_tls_reloc
12251 && irela != internal_relocs)
12252 {
12253 /* Get tls info. */
f961d9dd 12254 unsigned char *tls_mask;
411e1bfb 12255
3a71aa26 12256 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM		 12257 irela - 1, input_bfd))
12258 goto error_ret_free_internal;
e7b938ca 12259 if (*tls_mask != 0)
411e1bfb
AM		 12260 continue;
12261 }
12262
3b421ab3
AM		 12263 if (stub_type == ppc_stub_plt_call
12264 && irela + 1 < irelaend
12265 && irela[1].r_offset == irela->r_offset + 4
794e51c0
AM		 12266 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12267 {
12268 if (!tocsave_find (htab, INSERT,
12269 &local_syms, irela + 1, input_bfd))
12270 goto error_ret_free_internal;
12271 }
12272 else if (stub_type == ppc_stub_plt_call)
12273 stub_type = ppc_stub_plt_call_r2save;
3b421ab3 12274
721956f4 12275 /* Support for grouping stub sections. */
6f20ed8a 12276 id_sec = htab->sec_info[section->id].u.group->link_sec;
721956f4
AM		 12277
12278 /* Get the name of this stub. */
12279 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12280 if (!stub_name)
12281 goto error_ret_free_internal;
12282
12283 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 12284 stub_name, FALSE, FALSE);
721956f4
AM		 12285 if (stub_entry != NULL)
12286 {
12287 /* The proper stub has already been created. */
12288 free (stub_name);
794e51c0
AM		 12289 if (stub_type == ppc_stub_plt_call_r2save)
12290 stub_entry->stub_type = stub_type;
721956f4
AM		 12291 continue;
12292 }
12293
25f53a85 12294 stub_entry = ppc_add_stub (stub_name, section, info);
721956f4
AM		 12295 if (stub_entry == NULL)
12296 {
12297 free (stub_name);
6cdc0ccc
AM		 12298 error_ret_free_internal:
12299 if (elf_section_data (section)->relocs == NULL)
12300 free (internal_relocs);
12301 error_ret_free_local:
12302 if (local_syms != NULL
12303 && (symtab_hdr->contents
12304 != (unsigned char *) local_syms))
12305 free (local_syms);
b34976b6 12306 return FALSE;
721956f4
AM		 12307 }
12308
ad8e1ba5 12309 stub_entry->stub_type = stub_type;
794e51c0
AM		 12310 if (stub_type != ppc_stub_plt_call
12311 && stub_type != ppc_stub_plt_call_r2save)
e054468f
AM		 12312 {
12313 stub_entry->target_value = code_value;
12314 stub_entry->target_section = code_sec;
12315 }
12316 else
12317 {
12318 stub_entry->target_value = sym_value;
12319 stub_entry->target_section = sym_sec;
12320 }
721956f4 12321 stub_entry->h = hash;
e054468f 12322 stub_entry->plt_ent = plt_ent;
6911b7dc 12323 stub_entry->other = hash ? hash->elf.other : sym->st_other;
ee75fd95
AM		 12324
12325 if (stub_entry->h != NULL)
12326 htab->stub_globals += 1;
721956f4
AM		 12327 }
12328
12329 /* We're done with the internal relocs, free them. */
6cdc0ccc 12330 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 12331 free (internal_relocs);
721956f4 12332 }
6cdc0ccc
AM		 12333
12334 if (local_syms != NULL
12335 && symtab_hdr->contents != (unsigned char *) local_syms)
12336 {
12337 if (!info->keep_memory)
12338 free (local_syms);
12339 else
12340 symtab_hdr->contents = (unsigned char *) local_syms;
12341 }
721956f4
AM		 12342 }
12343
5c3dead3 12344 /* We may have added some stubs. Find out the new size of the
721956f4 12345 stub sections. */
e7d1c40c 12346 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12347 stub_sec != NULL;
12348 stub_sec = stub_sec->next)
e717da7e 12349 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 12350 {
5c3dead3 12351 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 12352 stub_sec->size = 0;
12353 stub_sec->reloc_count = 0;
84f5d08e 12354 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 12355 }
eea6121a
AM		 12356
12357 htab->brlt->size = 0;
84f5d08e
AM		 12358 htab->brlt->reloc_count = 0;
12359 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 12360 if (htab->relbrlt != NULL)
eea6121a 12361 htab->relbrlt->size = 0;
721956f4 12362
63bc6f6c 12363 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 12364
176a0d42
AM		 12365 if (info->emitrelocations
12366 && htab->glink != NULL && htab->glink->size != 0)
12367 {
12368 htab->glink->reloc_count = 1;
12369 htab->glink->flags |= SEC_RELOC;
12370 }
12371
58d180e8
AM		 12372 if (htab->glink_eh_frame != NULL
12373 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
9a2a56cc 12374 && htab->glink_eh_frame->output_section->size != 0)
58d180e8 12375 {
4bbe044a 12376 size_t size = 0, align;
58d180e8 12377
e7d1c40c 12378 for (stub_sec = htab->params->stub_bfd->sections;
58d180e8
AM		 12379 stub_sec != NULL;
12380 stub_sec = stub_sec->next)
12381 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
da44f4e5 12382 size += 24;
58d180e8
AM		 12383 if (htab->glink != NULL && htab->glink->size != 0)
12384 size += 24;
12385 if (size != 0)
12386 size += sizeof (glink_eh_frame_cie);
4bbe044a
AM		 12387 align = 1;
12388 align <<= htab->glink_eh_frame->output_section->alignment_power;
12389 align -= 1;
12390 size = (size + align) & ~align;
58d180e8
AM		 12391 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12392 htab->glink_eh_frame->size = size;
12393 }
12394
e7d1c40c
AM		 12395 if (htab->params->plt_stub_align != 0)
12396 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12397 stub_sec != NULL;
12398 stub_sec = stub_sec->next)
12399 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12400 stub_sec->size = ((stub_sec->size
12401 + (1 << htab->params->plt_stub_align) - 1)
12402 & (-1 << htab->params->plt_stub_align));
794e51c0 12403
e7d1c40c 12404 for (stub_sec = htab->params->stub_bfd->sections;
5c3dead3
AM		 12405 stub_sec != NULL;
12406 stub_sec = stub_sec->next)
12407 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12408 && stub_sec->rawsize != stub_sec->size)
12409 break;
12410
12411 /* Exit from this loop when no stubs have been added, and no stubs
12412 have changed size. */
58d180e8
AM		 12413 if (stub_sec == NULL
12414 && (htab->glink_eh_frame == NULL
12415 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
5c3dead3
AM		 12416 break;
12417
721956f4 12418 /* Ask the linker to do its stuff. */
e7d1c40c 12419 (*htab->params->layout_sections_again) ();
721956f4
AM		 12420 }
12421
da44f4e5
AM		 12422 if (htab->glink_eh_frame != NULL
12423 && htab->glink_eh_frame->size != 0)
12424 {
12425 bfd_vma val;
12426 bfd_byte *p, *last_fde;
12427 size_t last_fde_len, size, align, pad;
12428 asection *stub_sec;
12429
12430 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12431 if (p == NULL)
12432 return FALSE;
12433 htab->glink_eh_frame->contents = p;
12434 last_fde = p;
12435
12436 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12437 /* CIE length (rewrite in case little-endian). */
12438 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12439 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12440 p += sizeof (glink_eh_frame_cie);
12441
12442 for (stub_sec = htab->params->stub_bfd->sections;
12443 stub_sec != NULL;
12444 stub_sec = stub_sec->next)
12445 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12446 {
12447 last_fde = p;
12448 last_fde_len = 20;
12449 /* FDE length. */
12450 bfd_put_32 (htab->elf.dynobj, 20, p);
12451 p += 4;
12452 /* CIE pointer. */
12453 val = p - htab->glink_eh_frame->contents;
12454 bfd_put_32 (htab->elf.dynobj, val, p);
12455 p += 4;
12456 /* Offset to stub section, written later. */
12457 p += 4;
12458 /* stub section size. */
12459 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12460 p += 4;
12461 /* Augmentation. */
12462 p += 1;
12463 /* Pad. */
12464 p += 7;
12465 }
12466 if (htab->glink != NULL && htab->glink->size != 0)
12467 {
12468 last_fde = p;
12469 last_fde_len = 20;
12470 /* FDE length. */
12471 bfd_put_32 (htab->elf.dynobj, 20, p);
12472 p += 4;
12473 /* CIE pointer. */
12474 val = p - htab->glink_eh_frame->contents;
12475 bfd_put_32 (htab->elf.dynobj, val, p);
12476 p += 4;
12477 /* Offset to .glink, written later. */
12478 p += 4;
12479 /* .glink size. */
12480 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12481 p += 4;
12482 /* Augmentation. */
12483 p += 1;
12484
12485 *p++ = DW_CFA_advance_loc + 1;
12486 *p++ = DW_CFA_register;
12487 *p++ = 65;
12488 *p++ = 12;
12489 *p++ = DW_CFA_advance_loc + 4;
12490 *p++ = DW_CFA_restore_extended;
12491 *p++ = 65;
12492 }
12493 /* Subsume any padding into the last FDE if user .eh_frame
12494 sections are aligned more than glink_eh_frame. Otherwise any
12495 zero padding will be seen as a terminator. */
12496 size = p - htab->glink_eh_frame->contents;
12497 align = 1;
12498 align <<= htab->glink_eh_frame->output_section->alignment_power;
12499 align -= 1;
12500 pad = ((size + align) & ~align) - size;
12501 htab->glink_eh_frame->size = size + pad;
12502 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12503 }
12504
d969d15f
AM		 12505 maybe_strip_output (info, htab->brlt);
12506 if (htab->glink_eh_frame != NULL)
12507 maybe_strip_output (info, htab->glink_eh_frame);
721956f4 12508
b34976b6 12509 return TRUE;
721956f4
AM		 12510}
12511
12512/* Called after we have determined section placement. If sections
805fc799 12513 move, we'll be called again. Provide a value for TOCstart. */
721956f4 12514
805fc799 12515bfd_vma
1c865ab2 12516ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
721956f4 12517{
805fc799 12518 asection *s;
a27e685f 12519 bfd_vma TOCstart, adjust;
721956f4 12520
43417696
AM		 12521 if (info != NULL)
12522 {
12523 struct elf_link_hash_entry *h;
12524 struct elf_link_hash_table *htab = elf_hash_table (info);
12525
12526 if (is_elf_hash_table (htab)
12527 && htab->hgot != NULL)
12528 h = htab->hgot;
12529 else
12530 {
12531 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12532 if (is_elf_hash_table (htab))
12533 htab->hgot = h;
12534 }
12535 if (h != NULL
12536 && h->root.type == bfd_link_hash_defined
12537 && !h->root.linker_def
12538 && (!is_elf_hash_table (htab)
12539 || h->def_regular))
12540 {
12541 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12542 + h->root.u.def.section->output_offset
12543 + h->root.u.def.section->output_section->vma);
12544 _bfd_set_gp_value (obfd, TOCstart);
12545 return TOCstart;
12546 }
12547 }
12548
805fc799
AM		 12549 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12550 order. The TOC starts where the first of these sections starts. */
12551 s = bfd_get_section_by_name (obfd, ".got");
e054468f 12552 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12553 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 12554 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12555 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 12556 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12557 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 12558 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM		 12559 {
12560 /* This may happen for
12561 o references to TOC base (SYM@toc / TOC[tc0]) without a
12562 .toc directive
12563 o bad linker script
12564 o --gc-sections and empty TOC sections
12565
12566 FIXME: Warn user? */
12567
12568 /* Look for a likely section. We probably won't even be
12569 using TOCstart. */
12570 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12571 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12572 | SEC_EXCLUDE))
805fc799
AM		 12573 == (SEC_ALLOC | SEC_SMALL_DATA))
12574 break;
721956f4 12575 if (s == NULL)
805fc799 12576 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12577 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM		 12578 == (SEC_ALLOC | SEC_SMALL_DATA))
12579 break;
721956f4 12580 if (s == NULL)
805fc799 12581 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12582 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12583 == SEC_ALLOC)
805fc799 12584 break;
721956f4 12585 if (s == NULL)
805fc799 12586 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12587 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM		 12588 break;
12589 }
721956f4 12590
805fc799
AM		 12591 TOCstart = 0;
12592 if (s != NULL)
12593 TOCstart = s->output_section->vma + s->output_offset;
721956f4 12594
a27e685f
AM		 12595 /* Force alignment. */
12596 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12597 TOCstart -= adjust;
1c865ab2
AM		 12598 _bfd_set_gp_value (obfd, TOCstart);
12599
810d4e75 12600 if (info != NULL && s != NULL)
1c865ab2
AM		 12601 {
12602 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12603
810d4e75
AM		 12604 if (htab != NULL)
12605 {
12606 if (htab->elf.hgot != NULL)
12607 {
a27e685f 12608 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
810d4e75
AM		 12609 htab->elf.hgot->root.u.def.section = s;
12610 }
12611 }
12612 else
1c865ab2 12613 {
810d4e75
AM		 12614 struct bfd_link_hash_entry *bh = NULL;
12615 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
a27e685f
AM		 12616 s, TOC_BASE_OFF - adjust,
12617 NULL, FALSE, FALSE, &bh);
1c865ab2
AM		 12618 }
12619 }
805fc799 12620 return TOCstart;
721956f4
AM		 12621}
12622
a345bc8d
AM		 12623/* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12624 write out any global entry stubs. */
12625
12626static bfd_boolean
12627build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12628{
12629 struct bfd_link_info *info;
12630 struct ppc_link_hash_table *htab;
12631 struct plt_entry *pent;
12632 asection *s;
12633
12634 if (h->root.type == bfd_link_hash_indirect)
12635 return TRUE;
12636
12637 if (!h->pointer_equality_needed)
12638 return TRUE;
12639
12640 if (h->def_regular)
12641 return TRUE;
12642
12643 info = inf;
12644 htab = ppc_hash_table (info);
12645 if (htab == NULL)
12646 return FALSE;
12647
12648 s = htab->glink;
12649 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12650 if (pent->plt.offset != (bfd_vma) -1
12651 && pent->addend == 0)
12652 {
12653 bfd_byte *p;
12654 asection *plt;
12655 bfd_vma off;
12656
a345bc8d 12657 p = s->contents + h->root.u.def.value;
33e44f2e 12658 plt = htab->elf.splt;
a345bc8d
AM		 12659 if (!htab->elf.dynamic_sections_created
12660 || h->dynindx == -1)
33e44f2e 12661 plt = htab->elf.iplt;
a345bc8d
AM		 12662 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12663 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12664
12665 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12666 {
12667 info->callbacks->einfo
12668 (_("%P: linkage table error against `%T'\n"),
12669 h->root.root.string);
12670 bfd_set_error (bfd_error_bad_value);
12671 htab->stub_error = TRUE;
12672 }
12673
7341d5e2
AM		 12674 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12675 if (htab->params->emit_stub_syms)
12676 {
12677 size_t len = strlen (h->root.root.string);
12678 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12679
12680 if (name == NULL)
12681 return FALSE;
12682
12683 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12684 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12685 if (h == NULL)
12686 return FALSE;
12687 if (h->root.type == bfd_link_hash_new)
12688 {
12689 h->root.type = bfd_link_hash_defined;
12690 h->root.u.def.section = s;
12691 h->root.u.def.value = p - s->contents;
12692 h->ref_regular = 1;
12693 h->def_regular = 1;
12694 h->ref_regular_nonweak = 1;
12695 h->forced_local = 1;
12696 h->non_elf = 0;
2ec55de3 12697 h->root.linker_def = 1;
7341d5e2
AM		 12698 }
12699 }
12700
a345bc8d
AM		 12701 if (PPC_HA (off) != 0)
12702 {
12703 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12704 p += 4;
12705 }
12706 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12707 p += 4;
12708 bfd_put_32 (s->owner, MTCTR_R12, p);
12709 p += 4;
12710 bfd_put_32 (s->owner, BCTR, p);
12711 break;
12712 }
12713 return TRUE;
12714}
12715
721956f4
AM		 12716/* Build all the stubs associated with the current output file.
12717 The stubs are kept in a hash table attached to the main linker
12718 hash table. This function is called via gldelf64ppc_finish. */
12719
b34976b6 12720bfd_boolean
e7d1c40c 12721ppc64_elf_build_stubs (struct bfd_link_info *info,
4ce794b7 12722 char **stats)
5d1634d7
AM		 12723{
12724 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 12725 asection *stub_sec;
5d1634d7 12726 bfd_byte *p;
e717da7e 12727 int stub_sec_count = 0;
5d1634d7 12728
4dfe6ac6
NC		 12729 if (htab == NULL)
12730 return FALSE;
12731
eea6121a 12732 /* Allocate memory to hold the linker stubs. */
e7d1c40c 12733 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12734 stub_sec != NULL;
12735 stub_sec = stub_sec->next)
eea6121a
AM		 12736 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12737 && stub_sec->size != 0)
e717da7e 12738 {
e7d1c40c 12739 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
eea6121a
AM		 12740 if (stub_sec->contents == NULL)
12741 return FALSE;
12742 /* We want to check that built size is the same as calculated
12743 size. rawsize is a convenient location to use. */
12744 stub_sec->rawsize = stub_sec->size;
12745 stub_sec->size = 0;
e717da7e 12746 }
5d1634d7 12747
23eb7e01 12748 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 12749 {
9f951329 12750 unsigned int indx;
ad8e1ba5 12751 bfd_vma plt0;
9f951329 12752
721956f4 12753 /* Build the .glink plt call stub. */
e7d1c40c 12754 if (htab->params->emit_stub_syms)
97b639ba
AM		 12755 {
12756 struct elf_link_hash_entry *h;
468392fb
AM		 12757 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12758 TRUE, FALSE, FALSE);
97b639ba
AM		 12759 if (h == NULL)
12760 return FALSE;
12761 if (h->root.type == bfd_link_hash_new)
12762 {
12763 h->root.type = bfd_link_hash_defined;
12764 h->root.u.def.section = htab->glink;
ee4bf8d2 12765 h->root.u.def.value = 8;
f5385ebf
AM		 12766 h->ref_regular = 1;
12767 h->def_regular = 1;
12768 h->ref_regular_nonweak = 1;
12769 h->forced_local = 1;
12770 h->non_elf = 0;
2ec55de3 12771 h->root.linker_def = 1;
97b639ba
AM		 12772 }
12773 }
33e44f2e
AM		 12774 plt0 = (htab->elf.splt->output_section->vma
12775 + htab->elf.splt->output_offset
12776 - 16);
176a0d42
AM		 12777 if (info->emitrelocations)
12778 {
12779 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12780 if (r == NULL)
12781 return FALSE;
12782 r->r_offset = (htab->glink->output_offset
12783 + htab->glink->output_section->vma);
12784 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12785 r->r_addend = plt0;
12786 }
4ce794b7 12787 p = htab->glink->contents;
176a0d42 12788 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 12789 bfd_put_64 (htab->glink->owner, plt0, p);
12790 p += 8;
b9e5796b
AM		 12791 if (htab->opd_abi)
12792 {
12793 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12794 p += 4;
12795 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12796 p += 4;
12797 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12798 p += 4;
12799 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12800 p += 4;
12801 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12802 p += 4;
12803 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12804 p += 4;
12805 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12806 p += 4;
12807 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12808 p += 4;
12809 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12810 p += 4;
12811 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12812 p += 4;
12813 }
12814 else
12815 {
12816 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12817 p += 4;
12818 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12819 p += 4;
12820 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12821 p += 4;
12822 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12823 p += 4;
12824 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12825 p += 4;
12826 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12827 p += 4;
12828 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12829 p += 4;
12830 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12831 p += 4;
12832 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12833 p += 4;
12834 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12835 p += 4;
12836 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12837 p += 4;
12838 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12839 p += 4;
12840 }
4ce794b7 12841 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 12842 p += 4;
ee4bf8d2
AM		 12843 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12844 {
12845 bfd_put_32 (htab->glink->owner, NOP, p);
12846 p += 4;
12847 }
ad8e1ba5 12848
9f951329
AM		 12849 /* Build the .glink lazy link call stubs. */
12850 indx = 0;
a345bc8d 12851 while (p < htab->glink->contents + htab->glink->rawsize)
9f951329 12852 {
b9e5796b 12853 if (htab->opd_abi)
9f951329 12854 {
b9e5796b
AM		 12855 if (indx < 0x8000)
12856 {
12857 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12858 p += 4;
12859 }
12860 else
12861 {
12862 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12863 p += 4;
12864 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12865 p);
12866 p += 4;
12867 }
9f951329 12868 }
4ce794b7 12869 bfd_put_32 (htab->glink->owner,
ee4bf8d2 12870 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 12871 indx++;
9f951329
AM		 12872 p += 4;
12873 }
a345bc8d
AM		 12874
12875 /* Build .glink global entry stubs. */
12876 if (htab->glink->size > htab->glink->rawsize)
afe397ea 12877 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
5d1634d7 12878 }
5d1634d7 12879
7341d5e2 12880 if (htab->brlt != NULL && htab->brlt->size != 0)
721956f4 12881 {
4ce794b7 12882 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 12883 htab->brlt->size);
4ce794b7 12884 if (htab->brlt->contents == NULL)
b34976b6 12885 return FALSE;
721956f4 12886 }
ee75fd95 12887 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 12888 {
12889 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 12890 htab->relbrlt->size);
63bc6f6c
AM		 12891 if (htab->relbrlt->contents == NULL)
12892 return FALSE;
12893 }
5d1634d7 12894
721956f4
AM		 12895 /* Build the stubs as directed by the stub hash table. */
12896 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 12897
aa8a7074
AM		 12898 if (htab->relbrlt != NULL)
12899 htab->relbrlt->reloc_count = 0;
12900
e7d1c40c
AM		 12901 if (htab->params->plt_stub_align != 0)
12902 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12903 stub_sec != NULL;
12904 stub_sec = stub_sec->next)
12905 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12906 stub_sec->size = ((stub_sec->size
12907 + (1 << htab->params->plt_stub_align) - 1)
12908 & (-1 << htab->params->plt_stub_align));
794e51c0 12909
e7d1c40c 12910 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12911 stub_sec != NULL;
12912 stub_sec = stub_sec->next)
e717da7e
AM		 12913 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12914 {
12915 stub_sec_count += 1;
eea6121a 12916 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 12917 break;
12918 }
5d1634d7 12919
da44f4e5
AM		 12920 /* Note that the glink_eh_frame check here is not only testing that
12921 the generated size matched the calculated size but also that
12922 bfd_elf_discard_info didn't make any changes to the section. */
721956f4 12923 if (stub_sec != NULL
58d180e8
AM		 12924 || (htab->glink_eh_frame != NULL
12925 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
5d1634d7 12926 {
b34976b6 12927 htab->stub_error = TRUE;
8de848d8 12928 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
5d1634d7 12929 }
721956f4 12930
d2a300cf
AM		 12931 if (htab->stub_error)
12932 return FALSE;
12933
12934 if (stats != NULL)
12935 {
12936 *stats = bfd_malloc (500);
12937 if (*stats == NULL)
12938 return FALSE;
12939
ee75fd95 12940 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 12941 " branch %lu\n"
12942 " toc adjust %lu\n"
12943 " long branch %lu\n"
12944 " long toc adj %lu\n"
794e51c0 12945 " plt call %lu\n"
7341d5e2
AM		 12946 " plt call toc %lu\n"
12947 " global entry %lu"),
e717da7e 12948 stub_sec_count,
ee75fd95 12949 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 12950 htab->stub_count[ppc_stub_long_branch - 1],
12951 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12952 htab->stub_count[ppc_stub_plt_branch - 1],
12953 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
794e51c0 12954 htab->stub_count[ppc_stub_plt_call - 1],
7341d5e2
AM		 12955 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12956 htab->stub_count[ppc_stub_global_entry - 1]);
d2a300cf
AM		 12957 }
12958 return TRUE;
5bd4f169
AM		 12959}
12960
99877b66
AM		 12961/* This function undoes the changes made by add_symbol_adjust. */
12962
12963static bfd_boolean
12964undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12965{
12966 struct ppc_link_hash_entry *eh;
12967
12968 if (h->root.type == bfd_link_hash_indirect)
12969 return TRUE;
12970
99877b66
AM		 12971 eh = (struct ppc_link_hash_entry *) h;
12972 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12973 return TRUE;
12974
12975 eh->elf.root.type = bfd_link_hash_undefined;
12976 return TRUE;
12977}
12978
12979void
12980ppc64_elf_restore_symbols (struct bfd_link_info *info)
12981{
12982 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6
NC		 12983
12984 if (htab != NULL)
12985 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
99877b66
AM		 12986}
12987
60124e18
AM		 12988/* What to do when ld finds relocations against symbols defined in
12989 discarded sections. */
12990
12991static unsigned int
12992ppc64_elf_action_discarded (asection *sec)
12993{
12994 if (strcmp (".opd", sec->name) == 0)
12995 return 0;
12996
12997 if (strcmp (".toc", sec->name) == 0)
12998 return 0;
12999
bce50a28
JJ		 13000 if (strcmp (".toc1", sec->name) == 0)
13001 return 0;
13002
60124e18
AM		 13003 return _bfd_elf_default_action_discarded (sec);
13004}
13005
5bd4f169
AM		 13006/* The RELOCATE_SECTION function is called by the ELF backend linker
13007 to handle the relocations for a section.
13008
13009 The relocs are always passed as Rela structures; if the section
13010 actually uses Rel structures, the r_addend field will always be
13011 zero.
13012
13013 This function is responsible for adjust the section contents as
13014 necessary, and (if using Rela relocs and generating a
1049f94e 13015 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 13016 necessary.
13017
13018 This function does not have to worry about setting the reloc
13019 address or the reloc symbol index.
13020
13021 LOCAL_SYMS is a pointer to the swapped in local symbols.
13022
13023 LOCAL_SECTIONS is an array giving the section in the input file
13024 corresponding to the st_shndx field of each local symbol.
13025
13026 The global hash table entry for the global symbols can be found
13027 via elf_sym_hashes (input_bfd).
13028
1049f94e 13029 When generating relocatable output, this function must handle
5bd4f169
AM		 13030 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13031 going to be the section symbol corresponding to the output
13032 section, which means that the addend must be adjusted
13033 accordingly. */
13034
b34976b6 13035static bfd_boolean
4ce794b7
AM		 13036ppc64_elf_relocate_section (bfd *output_bfd,
13037 struct bfd_link_info *info,
13038 bfd *input_bfd,
13039 asection *input_section,
13040 bfd_byte *contents,
13041 Elf_Internal_Rela *relocs,
13042 Elf_Internal_Sym *local_syms,
13043 asection **local_sections)
5bd4f169 13044{
65f38f15 13045 struct ppc_link_hash_table *htab;
5bd4f169
AM		 13046 Elf_Internal_Shdr *symtab_hdr;
13047 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 13048 Elf_Internal_Rela *rel;
13049 Elf_Internal_Rela *relend;
411e1bfb
AM		 13050 Elf_Internal_Rela outrel;
13051 bfd_byte *loc;
411e1bfb 13052 struct got_entry **local_got_ents;
5bd4f169 13053 bfd_vma TOCstart;
b34976b6
AM		 13054 bfd_boolean ret = TRUE;
13055 bfd_boolean is_opd;
794e51c0
AM		 13056 /* Assume 'at' branch hints. */
13057 bfd_boolean is_isa_v2 = TRUE;
4fe5ca5b 13058 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 13059
65f38f15 13060 /* Initialize howto table if needed. */
5bd4f169 13061 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 13062 ppc_howto_init ();
13063
65f38f15 13064 htab = ppc_hash_table (info);
4dfe6ac6
NC		 13065 if (htab == NULL)
13066 return FALSE;
ee75fd95
AM		 13067
13068 /* Don't relocate stub sections. */
e7d1c40c 13069 if (input_section->owner == htab->params->stub_bfd)
ee75fd95
AM		 13070 return TRUE;
13071
0c8d6e5c 13072 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 13073
411e1bfb 13074 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 13075 TOCstart = elf_gp (output_bfd);
0ffa91dd 13076 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 13077 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 13078 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 13079
5bd4f169
AM		 13080 rel = relocs;
13081 relend = relocs + input_section->reloc_count;
13082 for (; rel < relend; rel++)
13083 {
04c9666a 13084 enum elf_ppc64_reloc_type r_type;
31c76678 13085 bfd_vma addend;
5bd4f169
AM		 13086 bfd_reloc_status_type r;
13087 Elf_Internal_Sym *sym;
13088 asection *sec;
039b3fef
AM		 13089 struct elf_link_hash_entry *h_elf;
13090 struct ppc_link_hash_entry *h;
13091 struct ppc_link_hash_entry *fdh;
5bd4f169 13092 const char *sym_name;
0d4792f7 13093 unsigned long r_symndx, toc_symndx;
3a71aa26 13094 bfd_vma toc_addend;
f961d9dd
AM		 13095 unsigned char tls_mask, tls_gd, tls_type;
13096 unsigned char sym_type;
5bd4f169 13097 bfd_vma relocation;
b34976b6
AM		 13098 bfd_boolean unresolved_reloc;
13099 bfd_boolean warned;
bc30df16 13100 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
67f0cbdb 13101 unsigned int insn;
e11840f9 13102 unsigned int mask;
721956f4
AM		 13103 struct ppc_stub_hash_entry *stub_entry;
13104 bfd_vma max_br_offset;
13105 bfd_vma from;
31c76678 13106 const Elf_Internal_Rela orig_rel = *rel;
b80eed39
AM		 13107 reloc_howto_type *howto;
13108 struct reloc_howto_struct alt_howto;
5bd4f169 13109
4ce794b7 13110 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 13111 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 13112
13113 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13114 symbol of the previous ADDR64 reloc. The symbol gives us the
13115 proper TOC base to use. */
13116 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13117 && rel != relocs
13118 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13119 && is_opd)
13120 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13121
4ce794b7
AM		 13122 sym = NULL;
13123 sec = NULL;
039b3fef 13124 h_elf = NULL;
4ce794b7 13125 sym_name = NULL;
b34976b6
AM		 13126 unresolved_reloc = FALSE;
13127 warned = FALSE;
65f38f15 13128
0b13192e 13129 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 13130 {
13131 /* It's a local symbol. */
74f0fb50 13132 struct _opd_sec_data *opd;
4025353c 13133
5bd4f169
AM		 13134 sym = local_syms + r_symndx;
13135 sec = local_sections[r_symndx];
26c61ae5 13136 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 13137 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 13138 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM		 13139 opd = get_opd_info (sec);
13140 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 13141 {
51aecdc5
AM		 13142 long adjust = opd->adjust[OPD_NDX (sym->st_value
13143 + rel->r_addend)];
4025353c
AM		 13144 if (adjust == -1)
13145 relocation = 0;
13146 else
4cc603a5
AM		 13147 {
13148 /* If this is a relocation against the opd section sym
13149 and we have edited .opd, adjust the reloc addend so
13150 that ld -r and ld --emit-relocs output is correct.
13151 If it is a reloc against some other .opd symbol,
13152 then the symbol value will be adjusted later. */
13153 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13154 rel->r_addend += adjust;
13155 else
13156 relocation += adjust;
13157 }
1e2f5b6e 13158 }
5bd4f169
AM		 13159 }
13160 else
13161 {
62d887d4
L		 13162 bfd_boolean ignored;
13163
b2a8e766
AM		 13164 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13165 r_symndx, symtab_hdr, sym_hashes,
039b3fef 13166 h_elf, sec, relocation,
62d887d4 13167 unresolved_reloc, warned, ignored);
039b3fef
AM		 13168 sym_name = h_elf->root.root.string;
13169 sym_type = h_elf->type;
b69fdb4e
AM		 13170 if (sec != NULL
13171 && sec->owner == output_bfd
13172 && strcmp (sec->name, ".opd") == 0)
13173 {
13174 /* This is a symbol defined in a linker script. All
13175 such are defined in output sections, even those
13176 defined by simple assignment from a symbol defined in
13177 an input section. Transfer the symbol to an
13178 appropriate input .opd section, so that a branch to
13179 this symbol will be mapped to the location specified
13180 by the opd entry. */
13181 struct bfd_link_order *lo;
13182 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13183 if (lo->type == bfd_indirect_link_order)
13184 {
13185 asection *isec = lo->u.indirect.section;
13186 if (h_elf->root.u.def.value >= isec->output_offset
13187 && h_elf->root.u.def.value < (isec->output_offset
13188 + isec->size))
13189 {
13190 h_elf->root.u.def.value -= isec->output_offset;
13191 h_elf->root.u.def.section = isec;
13192 sec = isec;
13193 break;
13194 }
13195 }
13196 }
5bd4f169 13197 }
039b3fef 13198 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 13199
dbaa2011 13200 if (sec != NULL && discarded_section (sec))
e4067dbb 13201 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b
MR		 13202 rel, 1, relend,
13203 ppc64_elf_howto_table[r_type], 0,
e4067dbb 13204 contents);
ab96bf03 13205
0e1862bb 13206 if (bfd_link_relocatable (info))
ab96bf03
AM		 13207 continue;
13208
f40da81b
AM		 13209 if (h != NULL && &h->elf == htab->elf.hgot)
13210 {
6f20ed8a 13211 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
f40da81b
AM		 13212 sec = bfd_abs_section_ptr;
13213 unresolved_reloc = FALSE;
13214 }
13215
951fd09b
AM		 13216 /* TLS optimizations. Replace instruction sequences and relocs
13217 based on information we collected in tls_optimize. We edit
13218 RELOCS so that --emit-relocs will output something sensible
13219 for the final instruction stream. */
13220 tls_mask = 0;
13221 tls_gd = 0;
0d4792f7 13222 toc_symndx = 0;
727fc41e
AM		 13223 if (h != NULL)
13224 tls_mask = h->tls_mask;
13225 else if (local_got_ents != NULL)
411e1bfb 13226 {
e054468f
AM		 13227 struct plt_entry **local_plt = (struct plt_entry **)
13228 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 13229 unsigned char *lgot_masks = (unsigned char *)
e054468f 13230 (local_plt + symtab_hdr->sh_info);
727fc41e
AM		 13231 tls_mask = lgot_masks[r_symndx];
13232 }
13233 if (tls_mask == 0
13234 && (r_type == R_PPC64_TLS
13235 || r_type == R_PPC64_TLSGD
13236 || r_type == R_PPC64_TLSLD))
13237 {
13238 /* Check for toc tls entries. */
f961d9dd 13239 unsigned char *toc_tls;
0d4792f7 13240
727fc41e
AM		 13241 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13242 &local_syms, rel, input_bfd))
13243 return FALSE;
0d4792f7 13244
727fc41e
AM		 13245 if (toc_tls)
13246 tls_mask = *toc_tls;
0d4792f7
AM		 13247 }
13248
13249 /* Check that tls relocs are used with tls syms, and non-tls
13250 relocs are used with non-tls syms. */
cf35638d 13251 if (r_symndx != STN_UNDEF
0d4792f7
AM		 13252 && r_type != R_PPC64_NONE
13253 && (h == NULL
039b3fef
AM		 13254 || h->elf.root.type == bfd_link_hash_defined
13255 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM		 13256 && (IS_PPC64_TLS_RELOC (r_type)
13257 != (sym_type == STT_TLS
13258 || (sym_type == STT_SECTION
13259 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7 13260 {
727fc41e
AM		 13261 if (tls_mask != 0
13262 && (r_type == R_PPC64_TLS
13263 || r_type == R_PPC64_TLSGD
13264 || r_type == R_PPC64_TLSLD))
0d4792f7
AM		 13265 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13266 ;
13267 else
25f53a85 13268 info->callbacks->einfo
1d483afe 13269 (!IS_PPC64_TLS_RELOC (r_type)
bc30df16
AM		 13270 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13271 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
25f53a85 13272 input_bfd, input_section, rel->r_offset,
0d4792f7
AM		 13273 ppc64_elf_howto_table[r_type]->name,
13274 sym_name);
411e1bfb
AM		 13275 }
13276
13277 /* Ensure reloc mapping code below stays sane. */
13278 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13279 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13280 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13281 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13282 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13283 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13284 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13285 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13286 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13287 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13288 abort ();
0d4792f7 13289
411e1bfb
AM		 13290 switch (r_type)
13291 {
13292 default:
411e1bfb
AM		 13293 break;
13294
ba761f19
AM		 13295 case R_PPC64_LO_DS_OPT:
13296 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13297 if ((insn & (0x3f << 26)) != 58u << 26)
13298 abort ();
13299 insn += (14u << 26) - (58u << 26);
13300 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13301 r_type = R_PPC64_TOC16_LO;
13302 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13303 break;
13304
411e1bfb
AM		 13305 case R_PPC64_TOC16:
13306 case R_PPC64_TOC16_LO:
13307 case R_PPC64_TOC16_DS:
13308 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 13309 {
13310 /* Check for toc tls entries. */
f961d9dd 13311 unsigned char *toc_tls;
951fd09b 13312 int retval;
411e1bfb 13313
3a71aa26
AM		 13314 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13315 &local_syms, rel, input_bfd);
951fd09b 13316 if (retval == 0)
411e1bfb
AM		 13317 return FALSE;
13318
13319 if (toc_tls)
13320 {
951fd09b 13321 tls_mask = *toc_tls;
411e1bfb
AM		 13322 if (r_type == R_PPC64_TOC16_DS
13323 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 13324 {
13325 if (tls_mask != 0
13326 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13327 goto toctprel;
13328 }
411e1bfb 13329 else
951fd09b
AM		 13330 {
13331 /* If we found a GD reloc pair, then we might be
13332 doing a GD->IE transition. */
13333 if (retval == 2)
13334 {
13335 tls_gd = TLS_TPRELGD;
13336 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13337 goto tls_ldgd_opt;
951fd09b
AM		 13338 }
13339 else if (retval == 3)
13340 {
13341 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 13342 goto tls_ldgd_opt;
951fd09b
AM		 13343 }
13344 }
411e1bfb
AM		 13345 }
13346 }
13347 break;
13348
9d6ded02
AM		 13349 case R_PPC64_GOT_TPREL16_HI:
13350 case R_PPC64_GOT_TPREL16_HA:
13351 if (tls_mask != 0
13352 && (tls_mask & TLS_TPREL) == 0)
13353 {
13354 rel->r_offset -= d_offset;
13355 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13356 r_type = R_PPC64_NONE;
13357 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13358 }
13359 break;
13360
411e1bfb
AM		 13361 case R_PPC64_GOT_TPREL16_DS:
13362 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 13363 if (tls_mask != 0
13364 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13365 {
81407a69 13366 toctprel:
4fe5ca5b 13367 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 13368 insn &= 31 << 21;
13369 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 13370 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 13371 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 13372 if (toc_symndx != 0)
13373 {
13374 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13375 rel->r_addend = toc_addend;
0d4792f7
AM		 13376 /* We changed the symbol. Start over in order to
13377 get h, sym, sec etc. right. */
13378 rel--;
13379 continue;
13380 }
13381 else
13382 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13383 }
13384 break;
13385
13386 case R_PPC64_TLS:
951fd09b
AM		 13387 if (tls_mask != 0
13388 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13389 {
411e1bfb 13390 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM		 13391 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13392 if (insn == 0)
411e1bfb 13393 abort ();
411e1bfb 13394 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 13395 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 13396 PPC64_TPREL16_LO which is at low-order half-word. */
13397 rel->r_offset += d_offset;
0d4792f7
AM		 13398 r_type = R_PPC64_TPREL16_LO;
13399 if (toc_symndx != 0)
13400 {
13401 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13402 rel->r_addend = toc_addend;
0d4792f7
AM		 13403 /* We changed the symbol. Start over in order to
13404 get h, sym, sec etc. right. */
13405 rel--;
13406 continue;
13407 }
13408 else
13409 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13410 }
13411 break;
13412
411e1bfb
AM		 13413 case R_PPC64_GOT_TLSGD16_HI:
13414 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 13415 tls_gd = TLS_TPRELGD;
13416 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13417 goto tls_gdld_hi;
13418 break;
13419
411e1bfb
AM		 13420 case R_PPC64_GOT_TLSLD16_HI:
13421 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13422 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 13423 {
951fd09b
AM		 13424 tls_gdld_hi:
13425 if ((tls_mask & tls_gd) != 0)
13426 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13427 + R_PPC64_GOT_TPREL16_DS);
13428 else
411e1bfb 13429 {
4fe5ca5b 13430 rel->r_offset -= d_offset;
727ac201 13431 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
951fd09b 13432 r_type = R_PPC64_NONE;
411e1bfb 13433 }
951fd09b 13434 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13435 }
13436 break;
13437
951fd09b
AM		 13438 case R_PPC64_GOT_TLSGD16:
13439 case R_PPC64_GOT_TLSGD16_LO:
13440 tls_gd = TLS_TPRELGD;
13441 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13442 goto tls_ldgd_opt;
951fd09b 13443 break;
411e1bfb 13444
951fd09b
AM		 13445 case R_PPC64_GOT_TLSLD16:
13446 case R_PPC64_GOT_TLSLD16_LO:
13447 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13448 {
3a71aa26 13449 unsigned int insn1, insn2, insn3;
102890f0
AM		 13450 bfd_vma offset;
13451
13452 tls_ldgd_opt:
727fc41e
AM		 13453 offset = (bfd_vma) -1;
13454 /* If not using the newer R_PPC64_TLSGD/LD to mark
13455 __tls_get_addr calls, we must trust that the call
13456 stays with its arg setup insns, ie. that the next
13457 reloc is the __tls_get_addr call associated with
13458 the current reloc. Edit both insns. */
13459 if (input_section->has_tls_get_addr_call
13460 && rel + 1 < relend
13461 && branch_reloc_hash_match (input_bfd, rel + 1,
13462 htab->tls_get_addr,
13463 htab->tls_get_addr_fd))
13464 offset = rel[1].r_offset;
b86ac8e3
AM		 13465 /* We read the low GOT_TLS (or TOC16) insn because we
13466 need to keep the destination reg. It may be
13467 something other than the usual r3, and moved to r3
13468 before the call by intervening code. */
13469 insn1 = bfd_get_32 (output_bfd,
13470 contents + rel->r_offset - d_offset);
102890f0 13471 if ((tls_mask & tls_gd) != 0)
411e1bfb 13472 {
102890f0 13473 /* IE */
b86ac8e3 13474 insn1 &= (0x1f << 21) | (0x1f << 16);
102890f0
AM		 13475 insn1 |= 58 << 26; /* ld */
13476 insn2 = 0x7c636a14; /* add 3,3,13 */
727fc41e 13477 if (offset != (bfd_vma) -1)
f58d5a2d 13478 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
102890f0
AM		 13479 if ((tls_mask & TLS_EXPLICIT) == 0)
13480 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13481 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 13482 else
102890f0
AM		 13483 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13484 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13485 }
13486 else
13487 {
13488 /* LE */
b86ac8e3
AM		 13489 insn1 &= 0x1f << 21;
13490 insn1 |= 0x3c0d0000; /* addis r,13,0 */
102890f0
AM		 13491 insn2 = 0x38630000; /* addi 3,3,0 */
13492 if (tls_gd == 0)
951fd09b 13493 {
102890f0 13494 /* Was an LD reloc. */
1d483afe
AM		 13495 if (toc_symndx)
13496 sec = local_sections[toc_symndx];
13497 for (r_symndx = 0;
13498 r_symndx < symtab_hdr->sh_info;
13499 r_symndx++)
13500 if (local_sections[r_symndx] == sec)
13501 break;
13502 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13503 r_symndx = STN_UNDEF;
102890f0 13504 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13505 if (r_symndx != STN_UNDEF)
1d483afe
AM		 13506 rel->r_addend -= (local_syms[r_symndx].st_value
13507 + sec->output_offset
13508 + sec->output_section->vma);
951fd09b 13509 }
102890f0 13510 else if (toc_symndx != 0)
3a71aa26
AM		 13511 {
13512 r_symndx = toc_symndx;
13513 rel->r_addend = toc_addend;
13514 }
102890f0
AM		 13515 r_type = R_PPC64_TPREL16_HA;
13516 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
727fc41e
AM		 13517 if (offset != (bfd_vma) -1)
13518 {
13519 rel[1].r_info = ELF64_R_INFO (r_symndx,
13520 R_PPC64_TPREL16_LO);
13521 rel[1].r_offset = offset + d_offset;
13522 rel[1].r_addend = rel->r_addend;
13523 }
102890f0 13524 }
3a71aa26
AM		 13525 bfd_put_32 (output_bfd, insn1,
13526 contents + rel->r_offset - d_offset);
727fc41e
AM		 13527 if (offset != (bfd_vma) -1)
13528 {
13529 insn3 = bfd_get_32 (output_bfd,
13530 contents + offset + 4);
13531 if (insn3 == NOP
13532 || insn3 == CROR_151515 || insn3 == CROR_313131)
13533 {
13534 rel[1].r_offset += 4;
13535 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13536 insn2 = NOP;
13537 }
13538 bfd_put_32 (output_bfd, insn2, contents + offset);
13539 }
13540 if ((tls_mask & tls_gd) == 0
13541 && (tls_gd == 0 || toc_symndx != 0))
13542 {
13543 /* We changed the symbol. Start over in order
13544 to get h, sym, sec etc. right. */
13545 rel--;
13546 continue;
13547 }
13548 }
13549 break;
13550
13551 case R_PPC64_TLSGD:
13552 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13553 {
13554 unsigned int insn2, insn3;
13555 bfd_vma offset = rel->r_offset;
13556
13557 if ((tls_mask & TLS_TPRELGD) != 0)
13558 {
13559 /* IE */
13560 r_type = R_PPC64_NONE;
13561 insn2 = 0x7c636a14; /* add 3,3,13 */
13562 }
13563 else
13564 {
13565 /* LE */
13566 if (toc_symndx != 0)
13567 {
13568 r_symndx = toc_symndx;
13569 rel->r_addend = toc_addend;
13570 }
13571 r_type = R_PPC64_TPREL16_LO;
13572 rel->r_offset = offset + d_offset;
13573 insn2 = 0x38630000; /* addi 3,3,0 */
13574 }
13575 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13576 /* Zap the reloc on the _tls_get_addr call too. */
13577 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13578 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
3a71aa26
AM		 13579 insn3 = bfd_get_32 (output_bfd,
13580 contents + offset + 4);
102890f0
AM		 13581 if (insn3 == NOP
13582 || insn3 == CROR_151515 || insn3 == CROR_313131)
13583 {
727fc41e 13584 rel->r_offset += 4;
3a71aa26
AM		 13585 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13586 insn2 = NOP;
102890f0 13587 }
102890f0 13588 bfd_put_32 (output_bfd, insn2, contents + offset);
727fc41e 13589 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
102890f0 13590 {
102890f0
AM		 13591 rel--;
13592 continue;
411e1bfb 13593 }
411e1bfb 13594 }
411e1bfb
AM		 13595 break;
13596
727fc41e
AM		 13597 case R_PPC64_TLSLD:
13598 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13599 {
13600 unsigned int insn2, insn3;
13601 bfd_vma offset = rel->r_offset;
13602
13603 if (toc_symndx)
13604 sec = local_sections[toc_symndx];
13605 for (r_symndx = 0;
13606 r_symndx < symtab_hdr->sh_info;
13607 r_symndx++)
13608 if (local_sections[r_symndx] == sec)
13609 break;
13610 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13611 r_symndx = STN_UNDEF;
727fc41e 13612 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13613 if (r_symndx != STN_UNDEF)
727fc41e
AM		 13614 rel->r_addend -= (local_syms[r_symndx].st_value
13615 + sec->output_offset
13616 + sec->output_section->vma);
13617
13618 r_type = R_PPC64_TPREL16_LO;
13619 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13620 rel->r_offset = offset + d_offset;
13621 /* Zap the reloc on the _tls_get_addr call too. */
13622 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13623 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
727fc41e
AM		 13624 insn2 = 0x38630000; /* addi 3,3,0 */
13625 insn3 = bfd_get_32 (output_bfd,
13626 contents + offset + 4);
13627 if (insn3 == NOP
13628 || insn3 == CROR_151515 || insn3 == CROR_313131)
13629 {
13630 rel->r_offset += 4;
13631 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13632 insn2 = NOP;
13633 }
13634 bfd_put_32 (output_bfd, insn2, contents + offset);
13635 rel--;
13636 continue;
13637 }
13638 break;
13639
411e1bfb 13640 case R_PPC64_DTPMOD64:
951fd09b
AM		 13641 if (rel + 1 < relend
13642 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13643 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 13644 {
951fd09b
AM		 13645 if ((tls_mask & TLS_GD) == 0)
13646 {
13647 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13648 if ((tls_mask & TLS_TPRELGD) != 0)
13649 r_type = R_PPC64_TPREL64;
13650 else
13651 {
4ce794b7 13652 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 13653 r_type = R_PPC64_NONE;
13654 }
13655 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13656 }
13657 }
13658 else
13659 {
13660 if ((tls_mask & TLS_LD) == 0)
411e1bfb 13661 {
4ce794b7 13662 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 13663 r_type = R_PPC64_NONE;
951fd09b 13664 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 13665 }
411e1bfb
AM		 13666 }
13667 break;
13668
13669 case R_PPC64_TPREL64:
951fd09b 13670 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 13671 {
13672 r_type = R_PPC64_NONE;
13673 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13674 }
13675 break;
52a82034
AM		 13676
13677 case R_PPC64_REL16_HA:
13678 /* If we are generating a non-PIC executable, edit
13679 . 0: addis 2,12,.TOC.-0b@ha
13680 . addi 2,2,.TOC.-0b@l
13681 used by ELFv2 global entry points to set up r2, to
13682 . lis 2,.TOC.@ha
13683 . addi 2,2,.TOC.@l
13684 if .TOC. is in range. */
0e1862bb 13685 if (!bfd_link_pic (info)
810d4e75 13686 && !info->traditional_format
52a82034
AM		 13687 && h != NULL && &h->elf == htab->elf.hgot
13688 && rel + 1 < relend
13689 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13690 && rel[1].r_offset == rel->r_offset + 4
13691 && rel[1].r_addend == rel->r_addend + 4
13692 && relocation + 0x80008000 <= 0xffffffff)
13693 {
13694 unsigned int insn1, insn2;
13695 bfd_vma offset = rel->r_offset - d_offset;
13696 insn1 = bfd_get_32 (output_bfd, contents + offset);
13697 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13698 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13699 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13700 {
13701 r_type = R_PPC64_ADDR16_HA;
13702 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13703 rel->r_addend -= d_offset;
13704 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13705 rel[1].r_addend -= d_offset + 4;
13706 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13707 }
13708 }
13709 break;
411e1bfb
AM		 13710 }
13711
13712 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 13713 insn = 0;
b25116a9
AM		 13714 max_br_offset = 1 << 25;
13715 addend = rel->r_addend;
bc30df16 13716 reloc_dest = DEST_NORMAL;
65f38f15 13717 switch (r_type)
5bd4f169
AM		 13718 {
13719 default:
65f38f15 13720 break;
5bd4f169 13721
3b421ab3
AM		 13722 case R_PPC64_TOCSAVE:
13723 if (relocation + addend == (rel->r_offset
13724 + input_section->output_offset
13725 + input_section->output_section->vma)
13726 && tocsave_find (htab, NO_INSERT,
13727 &local_syms, rel, input_bfd))
13728 {
13729 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13730 if (insn == NOP
13731 || insn == CROR_151515 || insn == CROR_313131)
a078d95a
AM		 13732 bfd_put_32 (input_bfd,
13733 STD_R2_0R1 + STK_TOC (htab),
3b421ab3
AM		 13734 contents + rel->r_offset);
13735 }
13736 break;
13737
65f38f15
AM		 13738 /* Branch taken prediction relocations. */
13739 case R_PPC64_ADDR14_BRTAKEN:
13740 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 13741 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13742 /* Fall thru. */
65f38f15 13743
86c76c7b 13744 /* Branch not taken prediction relocations. */
65f38f15
AM		 13745 case R_PPC64_ADDR14_BRNTAKEN:
13746 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 13747 insn |= bfd_get_32 (output_bfd,
13748 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 13749 /* Fall thru. */
86c76c7b 13750
b25116a9
AM		 13751 case R_PPC64_REL14:
13752 max_br_offset = 1 << 15;
13753 /* Fall thru. */
5bd4f169 13754
65f38f15 13755 case R_PPC64_REL24:
ad8e1ba5
AM		 13756 /* Calls to functions with a different TOC, such as calls to
13757 shared objects, need to alter the TOC pointer. This is
13758 done using a linkage stub. A REL24 branching to these
13759 linkage stubs needs to be followed by a nop, as the nop
13760 will be replaced with an instruction to restore the TOC
13761 base pointer. */
8387904d 13762 fdh = h;
b31867b6
AM		 13763 if (h != NULL
13764 && h->oh != NULL
13765 && h->oh->is_func_descriptor)
13766 fdh = ppc_follow_link (h->oh);
31c76678
DK		 13767 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13768 htab);
6abec6bc 13769 if (stub_entry != NULL
ad8e1ba5 13770 && (stub_entry->stub_type == ppc_stub_plt_call
794e51c0 13771 || stub_entry->stub_type == ppc_stub_plt_call_r2save
ad8e1ba5
AM		 13772 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13773 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 13774 {
b25116a9 13775 bfd_boolean can_plt_call = FALSE;
721956f4 13776
ba8ca3e7
AM		 13777 /* All of these stubs will modify r2, so there must be a
13778 branch and link followed by a nop. The nop is
13779 replaced by an insn to restore r2. */
eea6121a 13780 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 13781 {
ba8ca3e7
AM		 13782 unsigned long br;
13783
13784 br = bfd_get_32 (input_bfd,
13785 contents + rel->r_offset);
13786 if ((br & 1) != 0)
41bd81ab 13787 {
ba8ca3e7
AM		 13788 unsigned long nop;
13789
13790 nop = bfd_get_32 (input_bfd,
13791 contents + rel->r_offset + 4);
13792 if (nop == NOP
13793 || nop == CROR_151515 || nop == CROR_313131)
a7f2871e 13794 {
ba8ca3e7
AM		 13795 if (h != NULL
13796 && (h == htab->tls_get_addr_fd
13797 || h == htab->tls_get_addr)
e7d1c40c 13798 && !htab->params->no_tls_get_addr_opt)
ba8ca3e7
AM		 13799 {
13800 /* Special stub used, leave nop alone. */
13801 }
13802 else
a078d95a
AM		 13803 bfd_put_32 (input_bfd,
13804 LD_R2_0R1 + STK_TOC (htab),
ba8ca3e7
AM		 13805 contents + rel->r_offset + 4);
13806 can_plt_call = TRUE;
a7f2871e 13807 }
41bd81ab 13808 }
5bd4f169 13809 }
721956f4 13810
ba8ca3e7 13811 if (!can_plt_call && h != NULL)
721956f4 13812 {
ba8ca3e7
AM		 13813 const char *name = h->elf.root.root.string;
13814
13815 if (*name == '.')
13816 ++name;
13817
13818 if (strncmp (name, "__libc_start_main", 17) == 0
13819 && (name[17] == 0 || name[17] == '@'))
6ab189d5 13820 {
ba8ca3e7
AM		 13821 /* Allow crt1 branch to go via a toc adjusting
13822 stub. Other calls that never return could do
13823 the same, if we could detect such. */
b25116a9 13824 can_plt_call = TRUE;
6ab189d5 13825 }
ba8ca3e7
AM		 13826 }
13827
13828 if (!can_plt_call)
13829 {
13830 /* g++ as of 20130507 emits self-calls without a
13831 following nop. This is arguably wrong since we
13832 have conflicting information. On the one hand a
13833 global symbol and on the other a local call
13834 sequence, but don't error for this special case.
13835 It isn't possible to cheaply verify we have
13836 exactly such a call. Allow all calls to the same
13837 section. */
13838 asection *code_sec = sec;
13839
13840 if (get_opd_info (sec) != NULL)
ad8e1ba5 13841 {
ba8ca3e7
AM		 13842 bfd_vma off = (relocation + addend
13843 - sec->output_section->vma
13844 - sec->output_offset);
bc30df16 13845
ba8ca3e7 13846 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
ad8e1ba5 13847 }
ba8ca3e7
AM		 13848 if (code_sec == input_section)
13849 can_plt_call = TRUE;
13850 }
13851
13852 if (!can_plt_call)
13853 {
4805fc55
AM		 13854 if (stub_entry->stub_type == ppc_stub_plt_call
13855 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13856 info->callbacks->einfo
13857 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13858 "recompile with -fPIC\n"),
13859 input_bfd, input_section, rel->r_offset, sym_name);
13860 else
13861 info->callbacks->einfo
13862 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
13863 "(-mcmodel=small toc adjust stub)\n"),
13864 input_bfd, input_section, rel->r_offset, sym_name);
ba8ca3e7
AM		 13865
13866 bfd_set_error (bfd_error_bad_value);
13867 ret = FALSE;
721956f4
AM		 13868 }
13869
b25116a9 13870 if (can_plt_call
794e51c0
AM		 13871 && (stub_entry->stub_type == ppc_stub_plt_call
13872 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
b25116a9
AM		 13873 unresolved_reloc = FALSE;
13874 }
13875
6abec6bc
AM		 13876 if ((stub_entry == NULL
13877 || stub_entry->stub_type == ppc_stub_long_branch
13878 || stub_entry->stub_type == ppc_stub_plt_branch)
8387904d
AM		 13879 && get_opd_info (sec) != NULL)
13880 {
13881 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 13882 bfd_vma off = (relocation + addend
13883 - sec->output_section->vma
13884 - sec->output_offset);
aef36ac1 13885 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
8387904d
AM		 13886 if (dest != (bfd_vma) -1)
13887 {
13888 relocation = dest;
13889 addend = 0;
bc30df16 13890 reloc_dest = DEST_OPD;
8387904d
AM		 13891 }
13892 }
13893
b25116a9
AM		 13894 /* If the branch is out of reach we ought to have a long
13895 branch stub. */
13896 from = (rel->r_offset
13897 + input_section->output_offset
13898 + input_section->output_section->vma);
13899
6911b7dc
AM		 13900 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13901 ? fdh->elf.other
13902 : sym->st_other);
13903
6abec6bc
AM		 13904 if (stub_entry != NULL
13905 && (stub_entry->stub_type == ppc_stub_long_branch
13906 || stub_entry->stub_type == ppc_stub_plt_branch)
13907 && (r_type == R_PPC64_ADDR14_BRTAKEN
13908 || r_type == R_PPC64_ADDR14_BRNTAKEN
13909 || (relocation + addend - from + max_br_offset
13910 < 2 * max_br_offset)))
13911 /* Don't use the stub if this branch is in range. */
13912 stub_entry = NULL;
b25116a9
AM		 13913
13914 if (stub_entry != NULL)
13915 {
13916 /* Munge up the value and addend so that we call the stub
13917 rather than the procedure directly. */
13918 relocation = (stub_entry->stub_offset
6f20ed8a
AM		 13919 + stub_entry->group->stub_sec->output_offset
13920 + stub_entry->group->stub_sec->output_section->vma);
b25116a9 13921 addend = 0;
bc30df16 13922 reloc_dest = DEST_STUB;
3b421ab3 13923
794e51c0
AM		 13924 if ((stub_entry->stub_type == ppc_stub_plt_call
13925 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13926 && (ALWAYS_EMIT_R2SAVE
13927 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
3b421ab3
AM		 13928 && rel + 1 < relend
13929 && rel[1].r_offset == rel->r_offset + 4
13930 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13931 relocation += 4;
b25116a9
AM		 13932 }
13933
13934 if (insn != 0)
13935 {
794e51c0 13936 if (is_isa_v2)
721956f4 13937 {
b25116a9
AM		 13938 /* Set 'a' bit. This is 0b00010 in BO field for branch
13939 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13940 for branch on CTR insns (BO == 1a00t or 1a01t). */
13941 if ((insn & (0x14 << 21)) == (0x04 << 21))
13942 insn |= 0x02 << 21;
13943 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13944 insn |= 0x08 << 21;
13945 else
13946 break;
13947 }
13948 else
13949 {
13950 /* Invert 'y' bit if not the default. */
4cc603a5 13951 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 13952 insn ^= 0x01 << 21;
721956f4 13953 }
b25116a9
AM		 13954
13955 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 13956 }
e86ce104 13957
06da1e8e
AM		 13958 /* NOP out calls to undefined weak functions.
13959 We can thus call a weak function without first
13960 checking whether the function is defined. */
b25116a9 13961 else if (h != NULL
039b3fef 13962 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 13963 && h->elf.dynindx == -1
b25116a9
AM		 13964 && r_type == R_PPC64_REL24
13965 && relocation == 0
4cc603a5 13966 && addend == 0)
e86ce104 13967 {
06da1e8e
AM		 13968 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13969 continue;
e86ce104 13970 }
65f38f15
AM		 13971 break;
13972 }
5bd4f169 13973
65f38f15 13974 /* Set `addend'. */
411e1bfb 13975 tls_type = 0;
65f38f15
AM		 13976 switch (r_type)
13977 {
13978 default:
25f53a85 13979 info->callbacks->einfo
bc30df16 13980 (_("%P: %B: unknown relocation type %d for `%T'\n"),
d003868e 13981 input_bfd, (int) r_type, sym_name);
5bd4f169 13982
65f38f15 13983 bfd_set_error (bfd_error_bad_value);
b34976b6 13984 ret = FALSE;
65f38f15 13985 continue;
5bd4f169 13986
65f38f15 13987 case R_PPC64_NONE:
411e1bfb 13988 case R_PPC64_TLS:
727fc41e
AM		 13989 case R_PPC64_TLSGD:
13990 case R_PPC64_TLSLD:
3b421ab3 13991 case R_PPC64_TOCSAVE:
04c9666a
AM		 13992 case R_PPC64_GNU_VTINHERIT:
13993 case R_PPC64_GNU_VTENTRY:
65f38f15 13994 continue;
5bd4f169
AM		 13995
13996 /* GOT16 relocations. Like an ADDR16 using the symbol's
13997 address in the GOT as relocation value instead of the
411e1bfb 13998 symbol's value itself. Also, create a GOT entry for the
5bd4f169 13999 symbol and put the symbol value there. */
411e1bfb
AM		 14000 case R_PPC64_GOT_TLSGD16:
14001 case R_PPC64_GOT_TLSGD16_LO:
14002 case R_PPC64_GOT_TLSGD16_HI:
14003 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 14004 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 14005 goto dogot;
14006
14007 case R_PPC64_GOT_TLSLD16:
14008 case R_PPC64_GOT_TLSLD16_LO:
14009 case R_PPC64_GOT_TLSLD16_HI:
14010 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 14011 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 14012 goto dogot;
14013
14014 case R_PPC64_GOT_TPREL16_DS:
14015 case R_PPC64_GOT_TPREL16_LO_DS:
14016 case R_PPC64_GOT_TPREL16_HI:
14017 case R_PPC64_GOT_TPREL16_HA:
14018 tls_type = TLS_TLS | TLS_TPREL;
14019 goto dogot;
14020
14021 case R_PPC64_GOT_DTPREL16_DS:
14022 case R_PPC64_GOT_DTPREL16_LO_DS:
14023 case R_PPC64_GOT_DTPREL16_HI:
14024 case R_PPC64_GOT_DTPREL16_HA:
14025 tls_type = TLS_TLS | TLS_DTPREL;
14026 goto dogot;
14027
65f38f15
AM		 14028 case R_PPC64_GOT16:
14029 case R_PPC64_GOT16_LO:
14030 case R_PPC64_GOT16_HI:
14031 case R_PPC64_GOT16_HA:
14032 case R_PPC64_GOT16_DS:
14033 case R_PPC64_GOT16_LO_DS:
411e1bfb 14034 dogot:
5bd4f169
AM		 14035 {
14036 /* Relocation is to the entry for this symbol in the global
14037 offset table. */
e717da7e 14038 asection *got;
d881513a 14039 bfd_vma *offp;
5bd4f169 14040 bfd_vma off;
d881513a 14041 unsigned long indx = 0;
927be08e 14042 struct got_entry *ent;
65f38f15 14043
d881513a
AM		 14044 if (tls_type == (TLS_TLS | TLS_LD)
14045 && (h == NULL
f5385ebf 14046 || !h->elf.def_dynamic))
927be08e 14047 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 14048 else
5bd4f169 14049 {
5bd4f169 14050
d881513a
AM		 14051 if (h != NULL)
14052 {
14053 bfd_boolean dyn = htab->elf.dynamic_sections_created;
0e1862bb 14054 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info),
039b3fef 14055 &h->elf)
0e1862bb 14056 || (bfd_link_pic (info)
afe397ea 14057 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 14058 /* This is actually a static link, or it is a
14059 -Bsymbolic link and the symbol is defined
14060 locally, or the symbol was forced to be local
14061 because of a version file. */
14062 ;
14063 else
14064 {
14acf4dc 14065 BFD_ASSERT (h->elf.dynindx != -1);
039b3fef 14066 indx = h->elf.dynindx;
d881513a
AM		 14067 unresolved_reloc = FALSE;
14068 }
039b3fef 14069 ent = h->elf.got.glist;
d881513a 14070 }
411e1bfb 14071 else
5bd4f169 14072 {
d881513a
AM		 14073 if (local_got_ents == NULL)
14074 abort ();
14075 ent = local_got_ents[r_symndx];
5bd4f169 14076 }
d881513a
AM		 14077
14078 for (; ent != NULL; ent = ent->next)
31c76678 14079 if (ent->addend == orig_rel.r_addend
e717da7e 14080 && ent->owner == input_bfd
d881513a
AM		 14081 && ent->tls_type == tls_type)
14082 break;
5bd4f169 14083 }
411e1bfb 14084
927be08e
AM		 14085 if (ent == NULL)
14086 abort ();
14087 if (ent->is_indirect)
14088 ent = ent->got.ent;
14089 offp = &ent->got.offset;
14090 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM		 14091 if (got == NULL)
14092 abort ();
14093
411e1bfb
AM		 14094 /* The offset must always be a multiple of 8. We use the
14095 least significant bit to record whether we have already
14096 processed this entry. */
d881513a 14097 off = *offp;
411e1bfb
AM		 14098 if ((off & 1) != 0)
14099 off &= ~1;
5bd4f169
AM		 14100 else
14101 {
411e1bfb
AM		 14102 /* Generate relocs for the dynamic linker, except in
14103 the case of TLSLD where we'll use one entry per
14104 module. */
25f23106
AM		 14105 asection *relgot;
14106 bfd_boolean ifunc;
e717da7e 14107
d881513a 14108 *offp = off | 1;
25f23106
AM		 14109 relgot = NULL;
14110 ifunc = (h != NULL
14111 ? h->elf.type == STT_GNU_IFUNC
14112 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
19e08130 14113 if (ifunc)
33e44f2e 14114 relgot = htab->elf.irelplt;
0e1862bb 14115 else if ((bfd_link_pic (info) || indx != 0)
19e08130
AM		 14116 && (h == NULL
14117 || (tls_type == (TLS_TLS | TLS_LD)
14118 && !h->elf.def_dynamic)
14119 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14120 || h->elf.root.type != bfd_link_hash_undefweak))
14121 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106 14122 if (relgot != NULL)
5bd4f169 14123 {
e717da7e
AM		 14124 outrel.r_offset = (got->output_section->vma
14125 + got->output_offset
411e1bfb 14126 + off);
4cc603a5 14127 outrel.r_addend = addend;
d881513a 14128 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 14129 {
411e1bfb 14130 outrel.r_addend = 0;
e515b051 14131 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 14132 if (tls_type == (TLS_TLS | TLS_GD))
14133 {
e717da7e
AM		 14134 loc = relgot->contents;
14135 loc += (relgot->reloc_count++
d881513a
AM		 14136 * sizeof (Elf64_External_Rela));
14137 bfd_elf64_swap_reloca_out (output_bfd,
14138 &outrel, loc);
e515b051 14139 outrel.r_offset += 8;
4cc603a5 14140 outrel.r_addend = addend;
d881513a
AM		 14141 outrel.r_info
14142 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 14143 }
411e1bfb 14144 }
951fd09b 14145 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 14146 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 14147 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14148 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM		 14149 else if (indx != 0)
14150 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14151 else
81407a69 14152 {
25f23106
AM		 14153 if (ifunc)
14154 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14155 else
14156 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 14157
14158 /* Write the .got section contents for the sake
14159 of prelink. */
e717da7e 14160 loc = got->contents + off;
23fbd6fa
JJ		 14161 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14162 loc);
81407a69 14163 }
81407a69
AM		 14164
14165 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 14166 {
14167 outrel.r_addend += relocation;
14168 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
989f9879
AM		 14169 {
14170 if (htab->elf.tls_sec == NULL)
14171 outrel.r_addend = 0;
14172 else
14173 outrel.r_addend -= htab->elf.tls_sec->vma;
14174 }
e515b051 14175 }
e717da7e
AM		 14176 loc = relgot->contents;
14177 loc += (relgot->reloc_count++
411e1bfb
AM		 14178 * sizeof (Elf64_External_Rela));
14179 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14180 }
14181
ad8e1ba5 14182 /* Init the .got section contents here if we're not
81407a69 14183 emitting a reloc. */
d881513a 14184 else
411e1bfb 14185 {
4cc603a5 14186 relocation += addend;
7b609f53
AM		 14187 if (tls_type == (TLS_TLS | TLS_LD))
14188 relocation = 1;
14189 else if (tls_type != 0)
411e1bfb 14190 {
989f9879
AM		 14191 if (htab->elf.tls_sec == NULL)
14192 relocation = 0;
14193 else
14194 {
14195 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14196 if (tls_type == (TLS_TLS | TLS_TPREL))
14197 relocation += DTP_OFFSET - TP_OFFSET;
14198 }
5bd4f169 14199
7b609f53
AM		 14200 if (tls_type == (TLS_TLS | TLS_GD))
14201 {
14202 bfd_put_64 (output_bfd, relocation,
e717da7e 14203 got->contents + off + 8);
7b609f53
AM		 14204 relocation = 1;
14205 }
411e1bfb 14206 }
7b609f53 14207
411e1bfb 14208 bfd_put_64 (output_bfd, relocation,
e717da7e 14209 got->contents + off);
5bd4f169
AM		 14210 }
14211 }
14212
65f38f15
AM		 14213 if (off >= (bfd_vma) -2)
14214 abort ();
14215
bf102f86 14216 relocation = got->output_section->vma + got->output_offset + off;
6f20ed8a 14217 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
5bd4f169 14218 }
65f38f15
AM		 14219 break;
14220
14221 case R_PPC64_PLT16_HA:
14222 case R_PPC64_PLT16_HI:
14223 case R_PPC64_PLT16_LO:
14224 case R_PPC64_PLT32:
14225 case R_PPC64_PLT64:
14226 /* Relocation is to the entry for this symbol in the
14227 procedure linkage table. */
14228
14229 /* Resolve a PLT reloc against a local symbol directly,
14230 without using the procedure linkage table. */
14231 if (h == NULL)
14232 break;
14233
411e1bfb
AM		 14234 /* It's possible that we didn't make a PLT entry for this
14235 symbol. This happens when statically linking PIC code,
14236 or when using -Bsymbolic. Go find a match if there is a
14237 PLT entry. */
33e44f2e 14238 if (htab->elf.splt != NULL)
65f38f15 14239 {
411e1bfb 14240 struct plt_entry *ent;
039b3fef 14241 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
a345bc8d
AM		 14242 if (ent->plt.offset != (bfd_vma) -1
14243 && ent->addend == orig_rel.r_addend)
411e1bfb 14244 {
33e44f2e
AM		 14245 relocation = (htab->elf.splt->output_section->vma
14246 + htab->elf.splt->output_offset
411e1bfb
AM		 14247 + ent->plt.offset);
14248 unresolved_reloc = FALSE;
a345bc8d 14249 break;
411e1bfb 14250 }
65f38f15 14251 }
65f38f15 14252 break;
5bd4f169 14253
0b13192e
AM		 14254 case R_PPC64_TOC:
14255 /* Relocation value is TOC base. */
14256 relocation = TOCstart;
cf35638d 14257 if (r_symndx == STN_UNDEF)
6f20ed8a 14258 relocation += htab->sec_info[input_section->id].toc_off;
8517fae7
AM		 14259 else if (unresolved_reloc)
14260 ;
6f20ed8a
AM		 14261 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14262 relocation += htab->sec_info[sec->id].toc_off;
0b13192e
AM		 14263 else
14264 unresolved_reloc = TRUE;
ab96bf03 14265 goto dodyn;
0b13192e 14266
5bd4f169
AM		 14267 /* TOC16 relocs. We want the offset relative to the TOC base,
14268 which is the address of the start of the TOC plus 0x8000.
14269 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14270 in this order. */
65f38f15
AM		 14271 case R_PPC64_TOC16:
14272 case R_PPC64_TOC16_LO:
14273 case R_PPC64_TOC16_HI:
14274 case R_PPC64_TOC16_DS:
14275 case R_PPC64_TOC16_LO_DS:
14276 case R_PPC64_TOC16_HA:
6f20ed8a 14277 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
5bd4f169
AM		 14278 break;
14279
14280 /* Relocate against the beginning of the section. */
65f38f15
AM		 14281 case R_PPC64_SECTOFF:
14282 case R_PPC64_SECTOFF_LO:
14283 case R_PPC64_SECTOFF_HI:
14284 case R_PPC64_SECTOFF_DS:
14285 case R_PPC64_SECTOFF_LO_DS:
14286 case R_PPC64_SECTOFF_HA:
4ce794b7 14287 if (sec != NULL)
65f38f15 14288 addend -= sec->output_section->vma;
5bd4f169
AM		 14289 break;
14290
25f23106
AM		 14291 case R_PPC64_REL16:
14292 case R_PPC64_REL16_LO:
14293 case R_PPC64_REL16_HI:
14294 case R_PPC64_REL16_HA:
14295 break;
14296
721956f4
AM		 14297 case R_PPC64_REL14:
14298 case R_PPC64_REL14_BRNTAKEN:
14299 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 14300 case R_PPC64_REL24:
14301 break;
14302
411e1bfb
AM		 14303 case R_PPC64_TPREL16:
14304 case R_PPC64_TPREL16_LO:
14305 case R_PPC64_TPREL16_HI:
14306 case R_PPC64_TPREL16_HA:
14307 case R_PPC64_TPREL16_DS:
14308 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 14309 case R_PPC64_TPREL16_HIGH:
14310 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 14311 case R_PPC64_TPREL16_HIGHER:
14312 case R_PPC64_TPREL16_HIGHERA:
14313 case R_PPC64_TPREL16_HIGHEST:
14314 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM		 14315 if (h != NULL
14316 && h->elf.root.type == bfd_link_hash_undefweak
14317 && h->elf.dynindx == -1)
14318 {
14319 /* Make this relocation against an undefined weak symbol
14320 resolve to zero. This is really just a tweak, since
14321 code using weak externs ought to check that they are
14322 defined before using them. */
14323 bfd_byte *p = contents + rel->r_offset - d_offset;
14324
14325 insn = bfd_get_32 (output_bfd, p);
14326 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14327 if (insn != 0)
14328 bfd_put_32 (output_bfd, insn, p);
14329 break;
14330 }
989f9879
AM		 14331 if (htab->elf.tls_sec != NULL)
14332 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
0e1862bb 14333 if (bfd_link_pic (info))
411e1bfb
AM		 14334 /* The TPREL16 relocs shouldn't really be used in shared
14335 libs as they will result in DT_TEXTREL being set, but
14336 support them anyway. */
14337 goto dodyn;
14338 break;
14339
14340 case R_PPC64_DTPREL16:
14341 case R_PPC64_DTPREL16_LO:
14342 case R_PPC64_DTPREL16_HI:
14343 case R_PPC64_DTPREL16_HA:
14344 case R_PPC64_DTPREL16_DS:
14345 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 14346 case R_PPC64_DTPREL16_HIGH:
14347 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 14348 case R_PPC64_DTPREL16_HIGHER:
14349 case R_PPC64_DTPREL16_HIGHERA:
14350 case R_PPC64_DTPREL16_HIGHEST:
14351 case R_PPC64_DTPREL16_HIGHESTA:
989f9879
AM		 14352 if (htab->elf.tls_sec != NULL)
14353 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14354 break;
14355
45965137
AM		 14356 case R_PPC64_ADDR64_LOCAL:
14357 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14358 ? h->elf.other
14359 : sym->st_other);
14360 break;
14361
e515b051
AM		 14362 case R_PPC64_DTPMOD64:
14363 relocation = 1;
14364 addend = 0;
14365 goto dodyn;
14366
411e1bfb 14367 case R_PPC64_TPREL64:
989f9879
AM		 14368 if (htab->elf.tls_sec != NULL)
14369 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14370 goto dodyn;
14371
14372 case R_PPC64_DTPREL64:
989f9879
AM		 14373 if (htab->elf.tls_sec != NULL)
14374 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14375 /* Fall thru */
14376
65f38f15
AM		 14377 /* Relocations that may need to be propagated if this is a
14378 dynamic object. */
04c9666a 14379 case R_PPC64_REL30:
65f38f15
AM		 14380 case R_PPC64_REL32:
14381 case R_PPC64_REL64:
14382 case R_PPC64_ADDR14:
14383 case R_PPC64_ADDR14_BRNTAKEN:
14384 case R_PPC64_ADDR14_BRTAKEN:
14385 case R_PPC64_ADDR16:
14386 case R_PPC64_ADDR16_DS:
14387 case R_PPC64_ADDR16_HA:
14388 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 14389 case R_PPC64_ADDR16_HIGH:
14390 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14391 case R_PPC64_ADDR16_HIGHER:
14392 case R_PPC64_ADDR16_HIGHERA:
14393 case R_PPC64_ADDR16_HIGHEST:
14394 case R_PPC64_ADDR16_HIGHESTA:
14395 case R_PPC64_ADDR16_LO:
14396 case R_PPC64_ADDR16_LO_DS:
14397 case R_PPC64_ADDR24:
65f38f15
AM		 14398 case R_PPC64_ADDR32:
14399 case R_PPC64_ADDR64:
14400 case R_PPC64_UADDR16:
14401 case R_PPC64_UADDR32:
14402 case R_PPC64_UADDR64:
411e1bfb 14403 dodyn:
5d1634d7 14404 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 14405 break;
14406
41bd81ab
AM		 14407 if (NO_OPD_RELOCS && is_opd)
14408 break;
14409
0e1862bb 14410 if ((bfd_link_pic (info)
4e795f50 14411 && (h == NULL
039b3fef
AM		 14412 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14413 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 14414 && (must_be_dyn_reloc (info, r_type)
039b3fef 14415 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909 14416 || (ELIMINATE_COPY_RELOCS
0e1862bb 14417 && !bfd_link_pic (info)
65f38f15 14418 && h != NULL
039b3fef 14419 && h->elf.dynindx != -1
f5385ebf 14420 && !h->elf.non_got_ref
25f23106 14421 && !h->elf.def_regular)
0e1862bb 14422 || (!bfd_link_pic (info)
25f23106
AM		 14423 && (h != NULL
14424 ? h->elf.type == STT_GNU_IFUNC
14425 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
65f38f15 14426 {
b34976b6 14427 bfd_boolean skip, relocate;
65f38f15 14428 asection *sreloc;
1cf1f670 14429 bfd_vma out_off;
65f38f15
AM		 14430
14431 /* When generating a dynamic object, these relocations
14432 are copied into the output file to be resolved at run
14433 time. */
14434
b34976b6
AM		 14435 skip = FALSE;
14436 relocate = FALSE;
65f38f15 14437
1cf1f670
AM		 14438 out_off = _bfd_elf_section_offset (output_bfd, info,
14439 input_section, rel->r_offset);
14440 if (out_off == (bfd_vma) -1)
b34976b6 14441 skip = TRUE;
1cf1f670 14442 else if (out_off == (bfd_vma) -2)
b34976b6 14443 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 14444 out_off += (input_section->output_section->vma
14445 + input_section->output_offset);
14446 outrel.r_offset = out_off;
411e1bfb 14447 outrel.r_addend = rel->r_addend;
65f38f15 14448
1cf1f670
AM		 14449 /* Optimize unaligned reloc use. */
14450 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14451 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14452 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14453 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14454 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14455 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14456 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14457 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14458 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14459
65f38f15 14460 if (skip)
0bb2d96a 14461 memset (&outrel, 0, sizeof outrel);
afe397ea 14462 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 14463 && !is_opd
14464 && r_type != R_PPC64_TOC)
14acf4dc
MR		 14465 {
14466 BFD_ASSERT (h->elf.dynindx != -1);
14467 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14468 }
65f38f15
AM		 14469 else
14470 {
41bd81ab
AM		 14471 /* This symbol is local, or marked to become local,
14472 or this is an opd section reloc which must point
14473 at a local function. */
65f38f15 14474 outrel.r_addend += relocation;
e86ce104 14475 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 14476 {
3fad3c7c 14477 if (is_opd && h != NULL)
afbe61cf
AM		 14478 {
14479 /* Lie about opd entries. This case occurs
14480 when building shared libraries and we
14481 reference a function in another shared
3fad3c7c
AM		 14482 lib. The same thing happens for a weak
14483 definition in an application that's
14484 overridden by a strong definition in a
14485 shared lib. (I believe this is a generic
14486 bug in binutils handling of weak syms.)
14487 In these cases we won't use the opd
1e2f5b6e 14488 entry in this lib. */
b34976b6 14489 unresolved_reloc = FALSE;
afbe61cf 14490 }
25f23106
AM		 14491 if (!is_opd
14492 && r_type == R_PPC64_ADDR64
14493 && (h != NULL
14494 ? h->elf.type == STT_GNU_IFUNC
14495 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14496 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14497 else
14498 {
14499 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 14500
25f23106
AM		 14501 /* We need to relocate .opd contents for ld.so.
14502 Prelink also wants simple and consistent rules
14503 for relocs. This make all RELATIVE relocs have
14504 *r_offset equal to r_addend. */
14505 relocate = TRUE;
14506 }
65f38f15
AM		 14507 }
14508 else
14509 {
14510 long indx = 0;
14511
25f23106
AM		 14512 if (h != NULL
14513 ? h->elf.type == STT_GNU_IFUNC
14514 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14515 {
25f53a85 14516 info->callbacks->einfo
bc30df16
AM		 14517 (_("%P: %H: %s for indirect "
14518 "function `%T' unsupported\n"),
25f53a85 14519 input_bfd, input_section, rel->r_offset,
25f23106
AM		 14520 ppc64_elf_howto_table[r_type]->name,
14521 sym_name);
14522 ret = FALSE;
14523 }
cf35638d 14524 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
65f38f15
AM		 14525 ;
14526 else if (sec == NULL || sec->owner == NULL)
14527 {
14528 bfd_set_error (bfd_error_bad_value);
b34976b6 14529 return FALSE;
65f38f15
AM		 14530 }
14531 else
14532 {
14533 asection *osec;
14534
14535 osec = sec->output_section;
14536 indx = elf_section_data (osec)->dynindx;
14537
74541ad4
AM		 14538 if (indx == 0)
14539 {
14540 if ((osec->flags & SEC_READONLY) == 0
14541 && htab->elf.data_index_section != NULL)
14542 osec = htab->elf.data_index_section;
14543 else
14544 osec = htab->elf.text_index_section;
14545 indx = elf_section_data (osec)->dynindx;
14546 }
14547 BFD_ASSERT (indx != 0);
14548
65f38f15
AM		 14549 /* We are turning this relocation into one
14550 against a section symbol, so subtract out
14551 the output section's address but not the
14552 offset of the input section in the output
14553 section. */
14554 outrel.r_addend -= osec->vma;
14555 }
14556
14557 outrel.r_info = ELF64_R_INFO (indx, r_type);
14558 }
14559 }
14560
14561 sreloc = elf_section_data (input_section)->sreloc;
19e08130
AM		 14562 if (h != NULL
14563 ? h->elf.type == STT_GNU_IFUNC
14564 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
33e44f2e 14565 sreloc = htab->elf.irelplt;
65f38f15
AM		 14566 if (sreloc == NULL)
14567 abort ();
14568
dfbb6ac9
AM		 14569 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14570 >= sreloc->size)
14571 abort ();
947216bf
AM		 14572 loc = sreloc->contents;
14573 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 14574 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14575
14576 /* If this reloc is against an external symbol, it will
14577 be computed at runtime, so there's no need to do
81407a69
AM		 14578 anything now. However, for the sake of prelink ensure
14579 that the section contents are a known value. */
65f38f15 14580 if (! relocate)
81407a69
AM		 14581 {
14582 unresolved_reloc = FALSE;
14583 /* The value chosen here is quite arbitrary as ld.so
14584 ignores section contents except for the special
14585 case of .opd where the contents might be accessed
14586 before relocation. Choose zero, as that won't
14587 cause reloc overflow. */
14588 relocation = 0;
14589 addend = 0;
14590 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14591 to improve backward compatibility with older
14592 versions of ld. */
14593 if (r_type == R_PPC64_ADDR64)
14594 addend = outrel.r_addend;
14595 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 14596 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 14597 addend = (input_section->output_section->vma
14598 + input_section->output_offset
14599 + rel->r_offset);
81407a69 14600 }
65f38f15 14601 }
5bd4f169
AM		 14602 break;
14603
65f38f15
AM		 14604 case R_PPC64_COPY:
14605 case R_PPC64_GLOB_DAT:
14606 case R_PPC64_JMP_SLOT:
25f23106 14607 case R_PPC64_JMP_IREL:
65f38f15
AM		 14608 case R_PPC64_RELATIVE:
14609 /* We shouldn't ever see these dynamic relocs in relocatable
14610 files. */
ae9a127f 14611 /* Fall through. */
65f38f15
AM		 14612
14613 case R_PPC64_PLTGOT16:
14614 case R_PPC64_PLTGOT16_DS:
14615 case R_PPC64_PLTGOT16_HA:
14616 case R_PPC64_PLTGOT16_HI:
14617 case R_PPC64_PLTGOT16_LO:
14618 case R_PPC64_PLTGOT16_LO_DS:
14619 case R_PPC64_PLTREL32:
14620 case R_PPC64_PLTREL64:
14621 /* These ones haven't been implemented yet. */
14622
25f53a85 14623 info->callbacks->einfo
bc30df16 14624 (_("%P: %B: %s is not supported for `%T'\n"),
d003868e 14625 input_bfd,
4ce794b7 14626 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 14627
14628 bfd_set_error (bfd_error_invalid_operation);
b34976b6 14629 ret = FALSE;
5bd4f169 14630 continue;
65f38f15 14631 }
5bd4f169 14632
67f0cbdb
AM		 14633 /* Multi-instruction sequences that access the TOC can be
14634 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14635 to nop; addi rb,r2,x; */
14636 switch (r_type)
14637 {
14638 default:
14639 break;
14640
14641 case R_PPC64_GOT_TLSLD16_HI:
14642 case R_PPC64_GOT_TLSGD16_HI:
14643 case R_PPC64_GOT_TPREL16_HI:
14644 case R_PPC64_GOT_DTPREL16_HI:
14645 case R_PPC64_GOT16_HI:
14646 case R_PPC64_TOC16_HI:
14647 /* These relocs would only be useful if building up an
14648 offset to later add to r2, perhaps in an indexed
14649 addressing mode instruction. Don't try to optimize.
14650 Unfortunately, the possibility of someone building up an
14651 offset like this or even with the HA relocs, means that
14652 we need to check the high insn when optimizing the low
14653 insn. */
14654 break;
14655
14656 case R_PPC64_GOT_TLSLD16_HA:
14657 case R_PPC64_GOT_TLSGD16_HA:
14658 case R_PPC64_GOT_TPREL16_HA:
14659 case R_PPC64_GOT_DTPREL16_HA:
14660 case R_PPC64_GOT16_HA:
14661 case R_PPC64_TOC16_HA:
98528052 14662 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14663 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
98528052
AM		 14664 {
14665 bfd_byte *p = contents + (rel->r_offset & ~3);
14666 bfd_put_32 (input_bfd, NOP, p);
14667 }
67f0cbdb
AM		 14668 break;
14669
14670 case R_PPC64_GOT_TLSLD16_LO:
14671 case R_PPC64_GOT_TLSGD16_LO:
14672 case R_PPC64_GOT_TPREL16_LO_DS:
14673 case R_PPC64_GOT_DTPREL16_LO_DS:
14674 case R_PPC64_GOT16_LO:
14675 case R_PPC64_GOT16_LO_DS:
14676 case R_PPC64_TOC16_LO:
14677 case R_PPC64_TOC16_LO_DS:
98528052 14678 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14679 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
67f0cbdb
AM		 14680 {
14681 bfd_byte *p = contents + (rel->r_offset & ~3);
14682 insn = bfd_get_32 (input_bfd, p);
560c8763
AM		 14683 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14684 {
14685 /* Transform addic to addi when we change reg. */
14686 insn &= ~((0x3f << 26) | (0x1f << 16));
14687 insn |= (14u << 26) | (2 << 16);
14688 }
14689 else
67f0cbdb 14690 {
98528052
AM		 14691 insn &= ~(0x1f << 16);
14692 insn |= 2 << 16;
67f0cbdb 14693 }
560c8763 14694 bfd_put_32 (input_bfd, insn, p);
67f0cbdb
AM		 14695 }
14696 break;
14697 }
14698
65f38f15 14699 /* Do any further special processing. */
b80eed39 14700 howto = ppc64_elf_howto_table[(int) r_type];
65f38f15
AM		 14701 switch (r_type)
14702 {
14703 default:
14704 break;
14705
25f23106 14706 case R_PPC64_REL16_HA:
f9c6b907
AM		 14707 case R_PPC64_ADDR16_HA:
14708 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14709 case R_PPC64_ADDR16_HIGHERA:
14710 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 14711 case R_PPC64_TOC16_HA:
14712 case R_PPC64_SECTOFF_HA:
411e1bfb 14713 case R_PPC64_TPREL16_HA:
f9c6b907 14714 case R_PPC64_TPREL16_HIGHA:
411e1bfb 14715 case R_PPC64_TPREL16_HIGHERA:
411e1bfb 14716 case R_PPC64_TPREL16_HIGHESTA:
f9c6b907
AM		 14717 case R_PPC64_DTPREL16_HA:
14718 case R_PPC64_DTPREL16_HIGHA:
411e1bfb 14719 case R_PPC64_DTPREL16_HIGHERA:
411e1bfb 14720 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 14721 /* It's just possible that this symbol is a weak symbol
14722 that's not actually defined anywhere. In that case,
14723 'sec' would be NULL, and we should leave the symbol
14724 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 14725 if (sec == NULL)
14726 break;
14727 /* Fall thru */
14728
14729 case R_PPC64_GOT16_HA:
14730 case R_PPC64_PLTGOT16_HA:
14731 case R_PPC64_PLT16_HA:
14732 case R_PPC64_GOT_TLSGD16_HA:
14733 case R_PPC64_GOT_TLSLD16_HA:
14734 case R_PPC64_GOT_TPREL16_HA:
14735 case R_PPC64_GOT_DTPREL16_HA:
14736 /* Add 0x10000 if sign bit in 0:15 is set.
14737 Bits 0:15 are not used. */
14738 addend += 0x8000;
65f38f15
AM		 14739 break;
14740
14741 case R_PPC64_ADDR16_DS:
14742 case R_PPC64_ADDR16_LO_DS:
14743 case R_PPC64_GOT16_DS:
14744 case R_PPC64_GOT16_LO_DS:
14745 case R_PPC64_PLT16_LO_DS:
14746 case R_PPC64_SECTOFF_DS:
14747 case R_PPC64_SECTOFF_LO_DS:
14748 case R_PPC64_TOC16_DS:
14749 case R_PPC64_TOC16_LO_DS:
14750 case R_PPC64_PLTGOT16_DS:
14751 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 14752 case R_PPC64_GOT_TPREL16_DS:
14753 case R_PPC64_GOT_TPREL16_LO_DS:
14754 case R_PPC64_GOT_DTPREL16_DS:
14755 case R_PPC64_GOT_DTPREL16_LO_DS:
14756 case R_PPC64_TPREL16_DS:
14757 case R_PPC64_TPREL16_LO_DS:
14758 case R_PPC64_DTPREL16_DS:
14759 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 14760 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14761 mask = 3;
14762 /* If this reloc is against an lq insn, then the value must be
14763 a multiple of 16. This is somewhat of a hack, but the
14764 "correct" way to do this by defining _DQ forms of all the
14765 _DS relocs bloats all reloc switches in this file. It
14766 doesn't seem to make much sense to use any of these relocs
14767 in data, so testing the insn should be safe. */
494dac0c 14768 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 14769 mask = 15;
14770 if (((relocation + addend) & mask) != 0)
65f38f15 14771 {
25f53a85 14772 info->callbacks->einfo
8de848d8 14773 (_("%P: %H: error: %s not a multiple of %u\n"),
25f53a85 14774 input_bfd, input_section, rel->r_offset,
b80eed39 14775 howto->name,
adadcc0c 14776 mask + 1);
65f38f15 14777 bfd_set_error (bfd_error_bad_value);
b34976b6 14778 ret = FALSE;
65f38f15
AM		 14779 continue;
14780 }
14781 break;
5bd4f169
AM		 14782 }
14783
239e1f3a
AM		 14784 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14785 because such sections are not SEC_ALLOC and thus ld.so will
14786 not process them. */
65f38f15 14787 if (unresolved_reloc
239e1f3a 14788 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 14789 && h->elf.def_dynamic)
14790 && _bfd_elf_section_offset (output_bfd, info, input_section,
14791 rel->r_offset) != (bfd_vma) -1)
9c07fe7c 14792 {
25f53a85 14793 info->callbacks->einfo
bc30df16 14794 (_("%P: %H: unresolvable %s against `%T'\n"),
25f53a85 14795 input_bfd, input_section, rel->r_offset,
b80eed39 14796 howto->name,
039b3fef 14797 h->elf.root.root.string);
b34976b6 14798 ret = FALSE;
9c07fe7c 14799 }
5bd4f169 14800
b80eed39
AM		 14801 /* 16-bit fields in insns mostly have signed values, but a
14802 few insns have 16-bit unsigned values. Really, we should
14803 have different reloc types. */
14804 if (howto->complain_on_overflow != complain_overflow_dont
14805 && howto->dst_mask == 0xffff
14806 && (input_section->flags & SEC_CODE) != 0)
14807 {
14808 enum complain_overflow complain = complain_overflow_signed;
14809
14810 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM		 14811 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14812 complain = complain_overflow_bitfield;
14813 else if (howto->rightshift == 0
14814 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14815 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14816 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14817 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14818 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14819 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
b80eed39
AM		 14820 complain = complain_overflow_unsigned;
14821 if (howto->complain_on_overflow != complain)
14822 {
14823 alt_howto = *howto;
14824 alt_howto.complain_on_overflow = complain;
14825 howto = &alt_howto;
14826 }
14827 }
14828
14829 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14830 rel->r_offset, relocation, addend);
5bd4f169 14831
ef60b7ff 14832 if (r != bfd_reloc_ok)
5bd4f169 14833 {
bc30df16 14834 char *more_info = NULL;
b80eed39 14835 const char *reloc_name = howto->name;
bc30df16
AM		 14836
14837 if (reloc_dest != DEST_NORMAL)
14838 {
14839 more_info = bfd_malloc (strlen (reloc_name) + 8);
14840 if (more_info != NULL)
14841 {
14842 strcpy (more_info, reloc_name);
14843 strcat (more_info, (reloc_dest == DEST_OPD
14844 ? " (OPD)" : " (stub)"));
14845 reloc_name = more_info;
14846 }
14847 }
14848
cd27b276 14849 if (r == bfd_reloc_overflow)
5bd4f169 14850 {
8131c122
AM		 14851 /* On code like "if (foo) foo();" don't report overflow
14852 on a branch to zero when foo is undefined. */
14853 if (!warned
14854 && (reloc_dest == DEST_STUB
14855 || !(h != NULL
14856 && (h->elf.root.type == bfd_link_hash_undefweak
14857 || h->elf.root.type == bfd_link_hash_undefined)
14858 && is_branch_reloc (r_type))))
5bd4f169 14859 {
8131c122
AM		 14860 if (!((*info->callbacks->reloc_overflow)
14861 (info, &h->elf.root, sym_name,
14862 reloc_name, orig_rel.r_addend,
14863 input_bfd, input_section, rel->r_offset)))
14864 return FALSE;
5bd4f169 14865 }
ef60b7ff
AM		 14866 }
14867 else
14868 {
25f53a85 14869 info->callbacks->einfo
bc30df16 14870 (_("%P: %H: %s against `%T': error %d\n"),
25f53a85 14871 input_bfd, input_section, rel->r_offset,
bc30df16 14872 reloc_name, sym_name, (int) r);
b34976b6 14873 ret = FALSE;
ef60b7ff 14874 }
bc30df16
AM		 14875 if (more_info != NULL)
14876 free (more_info);
5bd4f169 14877 }
5bd4f169
AM		 14878 }
14879
645ea6a9
AM		 14880 /* If we're emitting relocations, then shortly after this function
14881 returns, reloc offsets and addends for this section will be
14882 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 14883 file rather than the input. Save a copy of the relocs for
14884 opd_entry_value. */
0e1862bb 14885 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
8860955f
AM		 14886 {
14887 bfd_size_type amt;
14888 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14889 rel = bfd_alloc (input_bfd, amt);
729eabd5
AM		 14890 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14891 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
8860955f
AM		 14892 if (rel == NULL)
14893 return FALSE;
14894 memcpy (rel, relocs, amt);
14895 }
5bd4f169
AM		 14896 return ret;
14897}
14898
754021d0
AM		 14899/* Adjust the value of any local symbols in opd sections. */
14900
6e0b88f1 14901static int
754021d0
AM		 14902ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14903 const char *name ATTRIBUTE_UNUSED,
14904 Elf_Internal_Sym *elfsym,
14905 asection *input_sec,
14906 struct elf_link_hash_entry *h)
14907{
74f0fb50
AM		 14908 struct _opd_sec_data *opd;
14909 long adjust;
754021d0
AM		 14910 bfd_vma value;
14911
4025353c 14912 if (h != NULL)
6e0b88f1 14913 return 1;
4025353c 14914
74f0fb50
AM		 14915 opd = get_opd_info (input_sec);
14916 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 14917 return 1;
754021d0
AM		 14918
14919 value = elfsym->st_value - input_sec->output_offset;
0e1862bb 14920 if (!bfd_link_relocatable (info))
754021d0
AM		 14921 value -= input_sec->output_section->vma;
14922
51aecdc5 14923 adjust = opd->adjust[OPD_NDX (value)];
4025353c 14924 if (adjust == -1)
6e0b88f1
AM		 14925 return 2;
14926
14927 elfsym->st_value += adjust;
14928 return 1;
754021d0
AM		 14929}
14930
5bd4f169
AM		 14931/* Finish up dynamic symbol handling. We set the contents of various
14932 dynamic sections here. */
14933
b34976b6 14934static bfd_boolean
4ce794b7
AM		 14935ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14936 struct bfd_link_info *info,
14937 struct elf_link_hash_entry *h,
ab6dce23 14938 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
5bd4f169 14939{
65f38f15 14940 struct ppc_link_hash_table *htab;
8387904d
AM		 14941 struct plt_entry *ent;
14942 Elf_Internal_Rela rela;
14943 bfd_byte *loc;
5bd4f169 14944
65f38f15 14945 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14946 if (htab == NULL)
14947 return FALSE;
5bd4f169 14948
8387904d
AM		 14949 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14950 if (ent->plt.offset != (bfd_vma) -1)
14951 {
14952 /* This symbol has an entry in the procedure linkage
14953 table. Set it up. */
e054468f
AM		 14954 if (!htab->elf.dynamic_sections_created
14955 || h->dynindx == -1)
14956 {
14957 BFD_ASSERT (h->type == STT_GNU_IFUNC
14958 && h->def_regular
14959 && (h->root.type == bfd_link_hash_defined
14960 || h->root.type == bfd_link_hash_defweak));
33e44f2e
AM		 14961 rela.r_offset = (htab->elf.iplt->output_section->vma
14962 + htab->elf.iplt->output_offset
25f23106 14963 + ent->plt.offset);
ee67d69a
AM		 14964 if (htab->opd_abi)
14965 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14966 else
14967 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 14968 rela.r_addend = (h->root.u.def.value
14969 + h->root.u.def.section->output_offset
14970 + h->root.u.def.section->output_section->vma
14971 + ent->addend);
33e44f2e
AM		 14972 loc = (htab->elf.irelplt->contents
14973 + (htab->elf.irelplt->reloc_count++
25f23106 14974 * sizeof (Elf64_External_Rela)));
e054468f
AM		 14975 }
14976 else
14977 {
33e44f2e
AM		 14978 rela.r_offset = (htab->elf.splt->output_section->vma
14979 + htab->elf.splt->output_offset
25f23106 14980 + ent->plt.offset);
e054468f
AM		 14981 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14982 rela.r_addend = ent->addend;
33e44f2e 14983 loc = (htab->elf.srelplt->contents
b9e5796b
AM		 14984 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14985 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
e054468f 14986 }
8387904d 14987 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a345bc8d
AM		 14988
14989 if (!htab->opd_abi)
14990 {
14991 if (!h->def_regular)
14992 {
14993 /* Mark the symbol as undefined, rather than as
14994 defined in glink. Leave the value if there were
14995 any relocations where pointer equality matters
14996 (this is a clue for the dynamic linker, to make
14997 function pointer comparisons work between an
14998 application and shared library), otherwise set it
14999 to zero. */
15000 sym->st_shndx = SHN_UNDEF;
15001 if (!h->pointer_equality_needed)
15002 sym->st_value = 0;
15003 else if (!h->ref_regular_nonweak)
15004 {
15005 /* This breaks function pointer comparisons, but
15006 that is better than breaking tests for a NULL
15007 function pointer. */
15008 sym->st_value = 0;
15009 }
15010 }
15011 }
8387904d 15012 }
5bd4f169 15013
f5385ebf 15014 if (h->needs_copy)
5bd4f169 15015 {
65f38f15 15016 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 15017
65f38f15
AM		 15018 if (h->dynindx == -1
15019 || (h->root.type != bfd_link_hash_defined
15020 && h->root.type != bfd_link_hash_defweak)
4ce794b7 15021 || htab->relbss == NULL)
65f38f15 15022 abort ();
5bd4f169
AM		 15023
15024 rela.r_offset = (h->root.u.def.value
15025 + h->root.u.def.section->output_section->vma
15026 + h->root.u.def.section->output_offset);
15027 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15028 rela.r_addend = 0;
4ce794b7
AM		 15029 loc = htab->relbss->contents;
15030 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 15031 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 15032 }
15033
b34976b6 15034 return TRUE;
5bd4f169
AM		 15035}
15036
65f38f15
AM		 15037/* Used to decide how to sort relocs in an optimal manner for the
15038 dynamic linker, before writing them out. */
15039
15040static enum elf_reloc_type_class
7e612e98
AM		 15041ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15042 const asection *rel_sec,
15043 const Elf_Internal_Rela *rela)
65f38f15 15044{
04c9666a 15045 enum elf_ppc64_reloc_type r_type;
7e612e98
AM		 15046 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15047
33e44f2e 15048 if (rel_sec == htab->elf.irelplt)
7e612e98 15049 return reloc_class_ifunc;
a33d1f77 15050
4ce794b7 15051 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 15052 switch (r_type)
65f38f15
AM		 15053 {
15054 case R_PPC64_RELATIVE:
15055 return reloc_class_relative;
15056 case R_PPC64_JMP_SLOT:
15057 return reloc_class_plt;
15058 case R_PPC64_COPY:
15059 return reloc_class_copy;
15060 default:
15061 return reloc_class_normal;
15062 }
15063}
15064
5bd4f169
AM		 15065/* Finish up the dynamic sections. */
15066
b34976b6 15067static bfd_boolean
4ce794b7
AM		 15068ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15069 struct bfd_link_info *info)
5bd4f169 15070{
65f38f15
AM		 15071 struct ppc_link_hash_table *htab;
15072 bfd *dynobj;
5bd4f169 15073 asection *sdyn;
5bd4f169 15074
65f38f15 15075 htab = ppc_hash_table (info);
4dfe6ac6
NC		 15076 if (htab == NULL)
15077 return FALSE;
15078
65f38f15 15079 dynobj = htab->elf.dynobj;
3d4d4302 15080 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
5bd4f169 15081
65f38f15 15082 if (htab->elf.dynamic_sections_created)
5bd4f169 15083 {
5bd4f169
AM		 15084 Elf64_External_Dyn *dyncon, *dynconend;
15085
33e44f2e 15086 if (sdyn == NULL || htab->elf.sgot == NULL)
65f38f15 15087 abort ();
5bd4f169
AM		 15088
15089 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 15090 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 15091 for (; dyncon < dynconend; dyncon++)
15092 {
15093 Elf_Internal_Dyn dyn;
19397422 15094 asection *s;
5bd4f169
AM		 15095
15096 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15097
15098 switch (dyn.d_tag)
15099 {
65f38f15
AM		 15100 default:
15101 continue;
5bd4f169 15102
5d1634d7 15103 case DT_PPC64_GLINK:
4ce794b7 15104 s = htab->glink;
6348e046 15105 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 15106 /* We stupidly defined DT_PPC64_GLINK to be the start
15107 of glink rather than the first entry point, which is
15108 what ld.so needs, and now have a bigger stub to
15109 support automatic multiple TOCs. */
b9e5796b 15110 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
5d1634d7
AM		 15111 break;
15112
19397422
AM		 15113 case DT_PPC64_OPD:
15114 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15115 if (s == NULL)
15116 continue;
15117 dyn.d_un.d_ptr = s->vma;
19397422
AM		 15118 break;
15119
e8910a83
AM		 15120 case DT_PPC64_OPT:
15121 if (htab->do_multi_toc && htab->multi_toc_needed)
15122 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15123 break;
15124
19397422
AM		 15125 case DT_PPC64_OPDSZ:
15126 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15127 if (s == NULL)
15128 continue;
eea6121a 15129 dyn.d_un.d_val = s->size;
19397422
AM		 15130 break;
15131
65f38f15 15132 case DT_PLTGOT:
33e44f2e 15133 s = htab->elf.splt;
6348e046 15134 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 15135 break;
15136
15137 case DT_JMPREL:
33e44f2e 15138 s = htab->elf.srelplt;
6348e046 15139 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 15140 break;
5bd4f169 15141
65f38f15 15142 case DT_PLTRELSZ:
33e44f2e 15143 dyn.d_un.d_val = htab->elf.srelplt->size;
5d1634d7
AM		 15144 break;
15145
15146 case DT_RELASZ:
15147 /* Don't count procedure linkage table relocs in the
15148 overall reloc count. */
33e44f2e 15149 s = htab->elf.srelplt;
6348e046
AM		 15150 if (s == NULL)
15151 continue;
eea6121a 15152 dyn.d_un.d_val -= s->size;
6348e046
AM		 15153 break;
15154
15155 case DT_RELA:
15156 /* We may not be using the standard ELF linker script.
15157 If .rela.plt is the first .rela section, we adjust
15158 DT_RELA to not include it. */
33e44f2e 15159 s = htab->elf.srelplt;
6348e046
AM		 15160 if (s == NULL)
15161 continue;
15162 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15163 continue;
eea6121a 15164 dyn.d_un.d_ptr += s->size;
65f38f15 15165 break;
5bd4f169 15166 }
5bd4f169 15167
65f38f15 15168 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 15169 }
5bd4f169
AM		 15170 }
15171
33e44f2e 15172 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
5d1634d7
AM		 15173 {
15174 /* Fill in the first entry in the global offset table.
15175 We use it to hold the link-time TOCbase. */
15176 bfd_put_64 (output_bfd,
60ee0d4a 15177 elf_gp (output_bfd) + TOC_BASE_OFF,
33e44f2e 15178 htab->elf.sgot->contents);
5d1634d7
AM		 15179
15180 /* Set .got entry size. */
33e44f2e 15181 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 15182 }
15183
33e44f2e 15184 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5d1634d7
AM		 15185 {
15186 /* Set .plt entry size. */
33e44f2e 15187 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
b9e5796b 15188 = PLT_ENTRY_SIZE (htab);
5d1634d7
AM		 15189 }
15190
84f5d08e
AM		 15191 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15192 brlt ourselves if emitrelocations. */
15193 if (htab->brlt != NULL
15194 && htab->brlt->reloc_count != 0
15195 && !_bfd_elf_link_output_relocs (output_bfd,
15196 htab->brlt,
d4730f92 15197 elf_section_data (htab->brlt)->rela.hdr,
84f5d08e
AM		 15198 elf_section_data (htab->brlt)->relocs,
15199 NULL))
15200 return FALSE;
15201
176a0d42
AM		 15202 if (htab->glink != NULL
15203 && htab->glink->reloc_count != 0
15204 && !_bfd_elf_link_output_relocs (output_bfd,
15205 htab->glink,
d4730f92 15206 elf_section_data (htab->glink)->rela.hdr,
176a0d42
AM		 15207 elf_section_data (htab->glink)->relocs,
15208 NULL))
15209 return FALSE;
15210
58d180e8 15211 if (htab->glink_eh_frame != NULL
da44f4e5
AM		 15212 && htab->glink_eh_frame->size != 0)
15213 {
15214 bfd_vma val;
15215 bfd_byte *p;
15216 asection *stub_sec;
15217
15218 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15219 for (stub_sec = htab->params->stub_bfd->sections;
15220 stub_sec != NULL;
15221 stub_sec = stub_sec->next)
15222 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15223 {
15224 /* FDE length. */
15225 p += 4;
15226 /* CIE pointer. */
15227 p += 4;
15228 /* Offset to stub section. */
15229 val = (stub_sec->output_section->vma
15230 + stub_sec->output_offset);
15231 val -= (htab->glink_eh_frame->output_section->vma
15232 + htab->glink_eh_frame->output_offset
15233 + (p - htab->glink_eh_frame->contents));
15234 if (val + 0x80000000 > 0xffffffff)
15235 {
15236 info->callbacks->einfo
15237 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15238 stub_sec->name);
15239 return FALSE;
15240 }
15241 bfd_put_32 (dynobj, val, p);
15242 p += 4;
15243 /* stub section size. */
15244 p += 4;
15245 /* Augmentation. */
15246 p += 1;
15247 /* Pad. */
15248 p += 7;
15249 }
15250 if (htab->glink != NULL && htab->glink->size != 0)
15251 {
15252 /* FDE length. */
15253 p += 4;
15254 /* CIE pointer. */
15255 p += 4;
15256 /* Offset to .glink. */
15257 val = (htab->glink->output_section->vma
15258 + htab->glink->output_offset
15259 + 8);
15260 val -= (htab->glink_eh_frame->output_section->vma
15261 + htab->glink_eh_frame->output_offset
15262 + (p - htab->glink_eh_frame->contents));
15263 if (val + 0x80000000 > 0xffffffff)
15264 {
15265 info->callbacks->einfo
15266 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15267 htab->glink->name);
15268 return FALSE;
15269 }
15270 bfd_put_32 (dynobj, val, p);
15271 p += 4;
15272 /* .glink size. */
15273 p += 4;
15274 /* Augmentation. */
15275 p += 1;
15276 /* Ops. */
15277 p += 7;
15278 }
15279
15280 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15281 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15282 htab->glink_eh_frame,
15283 htab->glink_eh_frame->contents))
15284 return FALSE;
15285 }
58d180e8 15286
e717da7e 15287 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 15288 since we didn't add them to DYNOBJ. We know dynobj is the first
15289 bfd. */
c72f2fb2 15290 while ((dynobj = dynobj->link.next) != NULL)
e717da7e
AM		 15291 {
15292 asection *s;
7b53ace3 15293
0c8d6e5c 15294 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 15295 continue;
15296
e717da7e
AM		 15297 s = ppc64_elf_tdata (dynobj)->got;
15298 if (s != NULL
eea6121a 15299 && s->size != 0
e717da7e
AM		 15300 && s->output_section != bfd_abs_section_ptr
15301 && !bfd_set_section_contents (output_bfd, s->output_section,
15302 s->contents, s->output_offset,
eea6121a 15303 s->size))
e717da7e
AM		 15304 return FALSE;
15305 s = ppc64_elf_tdata (dynobj)->relgot;
15306 if (s != NULL
eea6121a 15307 && s->size != 0
e717da7e
AM		 15308 && s->output_section != bfd_abs_section_ptr
15309 && !bfd_set_section_contents (output_bfd, s->output_section,
15310 s->contents, s->output_offset,
eea6121a 15311 s->size))
e717da7e
AM		 15312 return FALSE;
15313 }
f6c52c13 15314
b34976b6 15315 return TRUE;
5bd4f169
AM		 15316}
15317
5bd4f169 15318#include "elf64-target.h"
7b8e7dad
AM		 15319
15320/* FreeBSD support */
15321
15322#undef TARGET_LITTLE_SYM
15323#undef TARGET_LITTLE_NAME
15324
15325#undef TARGET_BIG_SYM
6d00b590 15326#define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
7b8e7dad
AM		 15327#undef TARGET_BIG_NAME
15328#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15329
15330#undef ELF_OSABI
15331#define ELF_OSABI ELFOSABI_FREEBSD
15332
15333#undef elf64_bed
15334#define elf64_bed elf64_powerpc_fbsd_bed
15335
15336#include "elf64-target.h"
15337
GDB Binutils - Deliverables
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