| 1 |
1181 |
sfurman |
/* PowerPC64-specific support for 64-bit ELF.
|
| 2 |
|
|
Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
|
| 3 |
|
|
Written by Linus Nordberg, Swox AB <info@swox.com>,
|
| 4 |
|
|
based on elf32-ppc.c by Ian Lance Taylor.
|
| 5 |
|
|
|
| 6 |
|
|
This file is part of BFD, the Binary File Descriptor library.
|
| 7 |
|
|
|
| 8 |
|
|
This program is free software; you can redistribute it and/or modify
|
| 9 |
|
|
it under the terms of the GNU General Public License as published by
|
| 10 |
|
|
the Free Software Foundation; either version 2 of the License, or
|
| 11 |
|
|
(at your option) any later version.
|
| 12 |
|
|
|
| 13 |
|
|
This program is distributed in the hope that it will be useful,
|
| 14 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 15 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 16 |
|
|
GNU General Public License for more details.
|
| 17 |
|
|
|
| 18 |
|
|
You should have received a copy of the GNU General Public License
|
| 19 |
|
|
along with this program; if not, write to the Free Software
|
| 20 |
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
| 21 |
|
|
|
| 22 |
|
|
/* This file is based on the 64-bit PowerPC ELF ABI. It is also based
|
| 23 |
|
|
on the file elf32-ppc.c. */
|
| 24 |
|
|
|
| 25 |
|
|
#include "bfd.h"
|
| 26 |
|
|
#include "sysdep.h"
|
| 27 |
|
|
#include "bfdlink.h"
|
| 28 |
|
|
#include "libbfd.h"
|
| 29 |
|
|
#include "elf-bfd.h"
|
| 30 |
|
|
#include "elf/ppc.h"
|
| 31 |
|
|
#include "elf64-ppc.h"
|
| 32 |
|
|
|
| 33 |
|
|
static void ppc_howto_init
|
| 34 |
|
|
PARAMS ((void));
|
| 35 |
|
|
static reloc_howto_type *ppc64_elf_reloc_type_lookup
|
| 36 |
|
|
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
|
| 37 |
|
|
static void ppc64_elf_info_to_howto
|
| 38 |
|
|
PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst));
|
| 39 |
|
|
static bfd_reloc_status_type ppc64_elf_ha_reloc
|
| 40 |
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
| 41 |
|
|
static bfd_reloc_status_type ppc64_elf_brtaken_reloc
|
| 42 |
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
| 43 |
|
|
static bfd_reloc_status_type ppc64_elf_sectoff_reloc
|
| 44 |
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
| 45 |
|
|
static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
|
| 46 |
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
| 47 |
|
|
static bfd_reloc_status_type ppc64_elf_toc_reloc
|
| 48 |
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
| 49 |
|
|
static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
|
| 50 |
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
| 51 |
|
|
static bfd_reloc_status_type ppc64_elf_toc64_reloc
|
| 52 |
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
| 53 |
|
|
static bfd_reloc_status_type ppc64_elf_unhandled_reloc
|
| 54 |
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
| 55 |
|
|
static boolean ppc64_elf_object_p
|
| 56 |
|
|
PARAMS ((bfd *));
|
| 57 |
|
|
static boolean ppc64_elf_merge_private_bfd_data
|
| 58 |
|
|
PARAMS ((bfd *, bfd *));
|
| 59 |
|
|
|
| 60 |
|
|
|
| 61 |
|
|
/* The name of the dynamic interpreter. This is put in the .interp
|
| 62 |
|
|
section. */
|
| 63 |
|
|
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
|
| 64 |
|
|
|
| 65 |
|
|
/* The size in bytes of an entry in the procedure linkage table. */
|
| 66 |
|
|
#define PLT_ENTRY_SIZE 24
|
| 67 |
|
|
|
| 68 |
|
|
/* The initial size of the plt reserved for the dynamic linker. */
|
| 69 |
|
|
#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
|
| 70 |
|
|
|
| 71 |
|
|
/* TOC base pointers offset from start of TOC. */
|
| 72 |
|
|
#define TOC_BASE_OFF (0x8000)
|
| 73 |
|
|
|
| 74 |
|
|
/* .plt call stub instructions. */
|
| 75 |
|
|
#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
|
| 76 |
|
|
#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
|
| 77 |
|
|
#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
|
| 78 |
|
|
#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
|
| 79 |
|
|
#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
|
| 80 |
|
|
/* ld %r11,xxx+16@l(%r12) */
|
| 81 |
|
|
#define BCTR 0x4e800420 /* bctr */
|
| 82 |
|
|
|
| 83 |
|
|
/* The normal stub is this size. */
|
| 84 |
|
|
#define PLT_CALL_STUB_SIZE (7*4)
|
| 85 |
|
|
|
| 86 |
|
|
/* But sometimes the .plt entry crosses a 64k boundary, and we need
|
| 87 |
|
|
to adjust the high word with this insn. */
|
| 88 |
|
|
#define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */
|
| 89 |
|
|
|
| 90 |
|
|
/* The .glink fixup call stub is the same as the .plt call stub, but
|
| 91 |
|
|
the first instruction restores r2, and the std is omitted. */
|
| 92 |
|
|
#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
|
| 93 |
|
|
|
| 94 |
|
|
/* Always allow this much space. */
|
| 95 |
|
|
#define GLINK_CALL_STUB_SIZE (8*4)
|
| 96 |
|
|
|
| 97 |
|
|
/* Pad with this. */
|
| 98 |
|
|
#define NOP 0x60000000
|
| 99 |
|
|
|
| 100 |
|
|
/* Some other nops. */
|
| 101 |
|
|
#define CROR_151515 0x4def7b82
|
| 102 |
|
|
#define CROR_313131 0x4ffffb82
|
| 103 |
|
|
|
| 104 |
|
|
/* .glink entries for the first 32k functions are two instructions. */
|
| 105 |
|
|
#define LI_R0_0 0x38000000 /* li %r0,0 */
|
| 106 |
|
|
#define B_DOT 0x48000000 /* b . */
|
| 107 |
|
|
|
| 108 |
|
|
/* After that, we need two instructions to load the index, followed by
|
| 109 |
|
|
a branch. */
|
| 110 |
|
|
#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
|
| 111 |
|
|
#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
|
| 112 |
|
|
|
| 113 |
|
|
/* Instructions to save and restore floating point regs. */
|
| 114 |
|
|
#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
|
| 115 |
|
|
#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
|
| 116 |
|
|
#define BLR 0x4e800020 /* blr */
|
| 117 |
|
|
|
| 118 |
|
|
/* Since .opd is an array of descriptors and each entry will end up
|
| 119 |
|
|
with identical R_PPC64_RELATIVE relocs, there is really no need to
|
| 120 |
|
|
propagate .opd relocs; The dynamic linker should be taught to
|
| 121 |
|
|
relocate .opd without reloc entries. */
|
| 122 |
|
|
#ifndef NO_OPD_RELOCS
|
| 123 |
|
|
#define NO_OPD_RELOCS 0
|
| 124 |
|
|
#endif
|
| 125 |
|
|
|
| 126 |
|
|
#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
|
| 127 |
|
|
|
| 128 |
|
|
/* Relocation HOWTO's. */
|
| 129 |
|
|
static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max];
|
| 130 |
|
|
|
| 131 |
|
|
static reloc_howto_type ppc64_elf_howto_raw[] = {
|
| 132 |
|
|
/* This reloc does nothing. */
|
| 133 |
|
|
HOWTO (R_PPC64_NONE, /* type */
|
| 134 |
|
|
0, /* rightshift */
|
| 135 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 136 |
|
|
8, /* bitsize */
|
| 137 |
|
|
false, /* pc_relative */
|
| 138 |
|
|
0, /* bitpos */
|
| 139 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 140 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 141 |
|
|
"R_PPC64_NONE", /* name */
|
| 142 |
|
|
false, /* partial_inplace */
|
| 143 |
|
|
0, /* src_mask */
|
| 144 |
|
|
0, /* dst_mask */
|
| 145 |
|
|
false), /* pcrel_offset */
|
| 146 |
|
|
|
| 147 |
|
|
/* A standard 32 bit relocation. */
|
| 148 |
|
|
HOWTO (R_PPC64_ADDR32, /* type */
|
| 149 |
|
|
0, /* rightshift */
|
| 150 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 151 |
|
|
32, /* bitsize */
|
| 152 |
|
|
false, /* pc_relative */
|
| 153 |
|
|
0, /* bitpos */
|
| 154 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 155 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 156 |
|
|
"R_PPC64_ADDR32", /* name */
|
| 157 |
|
|
false, /* partial_inplace */
|
| 158 |
|
|
0, /* src_mask */
|
| 159 |
|
|
0xffffffff, /* dst_mask */
|
| 160 |
|
|
false), /* pcrel_offset */
|
| 161 |
|
|
|
| 162 |
|
|
/* An absolute 26 bit branch; the lower two bits must be zero.
|
| 163 |
|
|
FIXME: we don't check that, we just clear them. */
|
| 164 |
|
|
HOWTO (R_PPC64_ADDR24, /* type */
|
| 165 |
|
|
0, /* rightshift */
|
| 166 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 167 |
|
|
26, /* bitsize */
|
| 168 |
|
|
false, /* pc_relative */
|
| 169 |
|
|
0, /* bitpos */
|
| 170 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 171 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 172 |
|
|
"R_PPC64_ADDR24", /* name */
|
| 173 |
|
|
false, /* partial_inplace */
|
| 174 |
|
|
0, /* src_mask */
|
| 175 |
|
|
0x03fffffc, /* dst_mask */
|
| 176 |
|
|
false), /* pcrel_offset */
|
| 177 |
|
|
|
| 178 |
|
|
/* A standard 16 bit relocation. */
|
| 179 |
|
|
HOWTO (R_PPC64_ADDR16, /* type */
|
| 180 |
|
|
0, /* rightshift */
|
| 181 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 182 |
|
|
16, /* bitsize */
|
| 183 |
|
|
false, /* pc_relative */
|
| 184 |
|
|
0, /* bitpos */
|
| 185 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 186 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 187 |
|
|
"R_PPC64_ADDR16", /* name */
|
| 188 |
|
|
false, /* partial_inplace */
|
| 189 |
|
|
0, /* src_mask */
|
| 190 |
|
|
0xffff, /* dst_mask */
|
| 191 |
|
|
false), /* pcrel_offset */
|
| 192 |
|
|
|
| 193 |
|
|
/* A 16 bit relocation without overflow. */
|
| 194 |
|
|
HOWTO (R_PPC64_ADDR16_LO, /* type */
|
| 195 |
|
|
0, /* rightshift */
|
| 196 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 197 |
|
|
16, /* bitsize */
|
| 198 |
|
|
false, /* pc_relative */
|
| 199 |
|
|
0, /* bitpos */
|
| 200 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 201 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 202 |
|
|
"R_PPC64_ADDR16_LO", /* name */
|
| 203 |
|
|
false, /* partial_inplace */
|
| 204 |
|
|
0, /* src_mask */
|
| 205 |
|
|
0xffff, /* dst_mask */
|
| 206 |
|
|
false), /* pcrel_offset */
|
| 207 |
|
|
|
| 208 |
|
|
/* Bits 16-31 of an address. */
|
| 209 |
|
|
HOWTO (R_PPC64_ADDR16_HI, /* type */
|
| 210 |
|
|
16, /* rightshift */
|
| 211 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 212 |
|
|
16, /* bitsize */
|
| 213 |
|
|
false, /* pc_relative */
|
| 214 |
|
|
0, /* bitpos */
|
| 215 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 216 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 217 |
|
|
"R_PPC64_ADDR16_HI", /* name */
|
| 218 |
|
|
false, /* partial_inplace */
|
| 219 |
|
|
0, /* src_mask */
|
| 220 |
|
|
0xffff, /* dst_mask */
|
| 221 |
|
|
false), /* pcrel_offset */
|
| 222 |
|
|
|
| 223 |
|
|
/* Bits 16-31 of an address, plus 1 if the contents of the low 16
|
| 224 |
|
|
bits, treated as a signed number, is negative. */
|
| 225 |
|
|
HOWTO (R_PPC64_ADDR16_HA, /* type */
|
| 226 |
|
|
16, /* rightshift */
|
| 227 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 228 |
|
|
16, /* bitsize */
|
| 229 |
|
|
false, /* pc_relative */
|
| 230 |
|
|
0, /* bitpos */
|
| 231 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 232 |
|
|
ppc64_elf_ha_reloc, /* special_function */
|
| 233 |
|
|
"R_PPC64_ADDR16_HA", /* name */
|
| 234 |
|
|
false, /* partial_inplace */
|
| 235 |
|
|
0, /* src_mask */
|
| 236 |
|
|
0xffff, /* dst_mask */
|
| 237 |
|
|
false), /* pcrel_offset */
|
| 238 |
|
|
|
| 239 |
|
|
/* An absolute 16 bit branch; the lower two bits must be zero.
|
| 240 |
|
|
FIXME: we don't check that, we just clear them. */
|
| 241 |
|
|
HOWTO (R_PPC64_ADDR14, /* type */
|
| 242 |
|
|
0, /* rightshift */
|
| 243 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 244 |
|
|
16, /* bitsize */
|
| 245 |
|
|
false, /* pc_relative */
|
| 246 |
|
|
0, /* bitpos */
|
| 247 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 248 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 249 |
|
|
"R_PPC64_ADDR14", /* name */
|
| 250 |
|
|
false, /* partial_inplace */
|
| 251 |
|
|
0, /* src_mask */
|
| 252 |
|
|
0x0000fffc, /* dst_mask */
|
| 253 |
|
|
false), /* pcrel_offset */
|
| 254 |
|
|
|
| 255 |
|
|
/* An absolute 16 bit branch, for which bit 10 should be set to
|
| 256 |
|
|
indicate that the branch is expected to be taken. The lower two
|
| 257 |
|
|
bits must be zero. */
|
| 258 |
|
|
HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
|
| 259 |
|
|
0, /* rightshift */
|
| 260 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 261 |
|
|
16, /* bitsize */
|
| 262 |
|
|
false, /* pc_relative */
|
| 263 |
|
|
0, /* bitpos */
|
| 264 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 265 |
|
|
ppc64_elf_brtaken_reloc, /* special_function */
|
| 266 |
|
|
"R_PPC64_ADDR14_BRTAKEN",/* name */
|
| 267 |
|
|
false, /* partial_inplace */
|
| 268 |
|
|
0, /* src_mask */
|
| 269 |
|
|
0x0000fffc, /* dst_mask */
|
| 270 |
|
|
false), /* pcrel_offset */
|
| 271 |
|
|
|
| 272 |
|
|
/* An absolute 16 bit branch, for which bit 10 should be set to
|
| 273 |
|
|
indicate that the branch is not expected to be taken. The lower
|
| 274 |
|
|
two bits must be zero. */
|
| 275 |
|
|
HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
|
| 276 |
|
|
0, /* rightshift */
|
| 277 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 278 |
|
|
16, /* bitsize */
|
| 279 |
|
|
false, /* pc_relative */
|
| 280 |
|
|
0, /* bitpos */
|
| 281 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 282 |
|
|
ppc64_elf_brtaken_reloc, /* special_function */
|
| 283 |
|
|
"R_PPC64_ADDR14_BRNTAKEN",/* name */
|
| 284 |
|
|
false, /* partial_inplace */
|
| 285 |
|
|
0, /* src_mask */
|
| 286 |
|
|
0x0000fffc, /* dst_mask */
|
| 287 |
|
|
false), /* pcrel_offset */
|
| 288 |
|
|
|
| 289 |
|
|
/* A relative 26 bit branch; the lower two bits must be zero. */
|
| 290 |
|
|
HOWTO (R_PPC64_REL24, /* type */
|
| 291 |
|
|
0, /* rightshift */
|
| 292 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 293 |
|
|
26, /* bitsize */
|
| 294 |
|
|
true, /* pc_relative */
|
| 295 |
|
|
0, /* bitpos */
|
| 296 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 297 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 298 |
|
|
"R_PPC64_REL24", /* name */
|
| 299 |
|
|
false, /* partial_inplace */
|
| 300 |
|
|
0, /* src_mask */
|
| 301 |
|
|
0x03fffffc, /* dst_mask */
|
| 302 |
|
|
true), /* pcrel_offset */
|
| 303 |
|
|
|
| 304 |
|
|
/* A relative 16 bit branch; the lower two bits must be zero. */
|
| 305 |
|
|
HOWTO (R_PPC64_REL14, /* type */
|
| 306 |
|
|
0, /* rightshift */
|
| 307 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 308 |
|
|
16, /* bitsize */
|
| 309 |
|
|
true, /* pc_relative */
|
| 310 |
|
|
0, /* bitpos */
|
| 311 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 312 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 313 |
|
|
"R_PPC64_REL14", /* name */
|
| 314 |
|
|
false, /* partial_inplace */
|
| 315 |
|
|
0, /* src_mask */
|
| 316 |
|
|
0x0000fffc, /* dst_mask */
|
| 317 |
|
|
true), /* pcrel_offset */
|
| 318 |
|
|
|
| 319 |
|
|
/* A relative 16 bit branch. Bit 10 should be set to indicate that
|
| 320 |
|
|
the branch is expected to be taken. The lower two bits must be
|
| 321 |
|
|
zero. */
|
| 322 |
|
|
HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
|
| 323 |
|
|
0, /* rightshift */
|
| 324 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 325 |
|
|
16, /* bitsize */
|
| 326 |
|
|
true, /* pc_relative */
|
| 327 |
|
|
0, /* bitpos */
|
| 328 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 329 |
|
|
ppc64_elf_brtaken_reloc, /* special_function */
|
| 330 |
|
|
"R_PPC64_REL14_BRTAKEN", /* name */
|
| 331 |
|
|
false, /* partial_inplace */
|
| 332 |
|
|
0, /* src_mask */
|
| 333 |
|
|
0x0000fffc, /* dst_mask */
|
| 334 |
|
|
true), /* pcrel_offset */
|
| 335 |
|
|
|
| 336 |
|
|
/* A relative 16 bit branch. Bit 10 should be set to indicate that
|
| 337 |
|
|
the branch is not expected to be taken. The lower two bits must
|
| 338 |
|
|
be zero. */
|
| 339 |
|
|
HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
|
| 340 |
|
|
0, /* rightshift */
|
| 341 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 342 |
|
|
16, /* bitsize */
|
| 343 |
|
|
true, /* pc_relative */
|
| 344 |
|
|
0, /* bitpos */
|
| 345 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 346 |
|
|
ppc64_elf_brtaken_reloc, /* special_function */
|
| 347 |
|
|
"R_PPC64_REL14_BRNTAKEN",/* name */
|
| 348 |
|
|
false, /* partial_inplace */
|
| 349 |
|
|
0, /* src_mask */
|
| 350 |
|
|
0x0000fffc, /* dst_mask */
|
| 351 |
|
|
true), /* pcrel_offset */
|
| 352 |
|
|
|
| 353 |
|
|
/* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
|
| 354 |
|
|
symbol. */
|
| 355 |
|
|
HOWTO (R_PPC64_GOT16, /* type */
|
| 356 |
|
|
0, /* rightshift */
|
| 357 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 358 |
|
|
16, /* bitsize */
|
| 359 |
|
|
false, /* pc_relative */
|
| 360 |
|
|
0, /* bitpos */
|
| 361 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 362 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 363 |
|
|
"R_PPC64_GOT16", /* name */
|
| 364 |
|
|
false, /* partial_inplace */
|
| 365 |
|
|
0, /* src_mask */
|
| 366 |
|
|
0xffff, /* dst_mask */
|
| 367 |
|
|
false), /* pcrel_offset */
|
| 368 |
|
|
|
| 369 |
|
|
/* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
|
| 370 |
|
|
the symbol. */
|
| 371 |
|
|
HOWTO (R_PPC64_GOT16_LO, /* type */
|
| 372 |
|
|
0, /* rightshift */
|
| 373 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 374 |
|
|
16, /* bitsize */
|
| 375 |
|
|
false, /* pc_relative */
|
| 376 |
|
|
0, /* bitpos */
|
| 377 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 378 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 379 |
|
|
"R_PPC64_GOT16_LO", /* name */
|
| 380 |
|
|
false, /* partial_inplace */
|
| 381 |
|
|
0, /* src_mask */
|
| 382 |
|
|
0xffff, /* dst_mask */
|
| 383 |
|
|
false), /* pcrel_offset */
|
| 384 |
|
|
|
| 385 |
|
|
/* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
|
| 386 |
|
|
the symbol. */
|
| 387 |
|
|
HOWTO (R_PPC64_GOT16_HI, /* type */
|
| 388 |
|
|
16, /* rightshift */
|
| 389 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 390 |
|
|
16, /* bitsize */
|
| 391 |
|
|
false, /* pc_relative */
|
| 392 |
|
|
0, /* bitpos */
|
| 393 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 394 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 395 |
|
|
"R_PPC64_GOT16_HI", /* name */
|
| 396 |
|
|
false, /* partial_inplace */
|
| 397 |
|
|
0, /* src_mask */
|
| 398 |
|
|
0xffff, /* dst_mask */
|
| 399 |
|
|
false), /* pcrel_offset */
|
| 400 |
|
|
|
| 401 |
|
|
/* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
|
| 402 |
|
|
the symbol. */
|
| 403 |
|
|
HOWTO (R_PPC64_GOT16_HA, /* type */
|
| 404 |
|
|
16, /* rightshift */
|
| 405 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 406 |
|
|
16, /* bitsize */
|
| 407 |
|
|
false, /* pc_relative */
|
| 408 |
|
|
0, /* bitpos */
|
| 409 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 410 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 411 |
|
|
"R_PPC64_GOT16_HA", /* name */
|
| 412 |
|
|
false, /* partial_inplace */
|
| 413 |
|
|
0, /* src_mask */
|
| 414 |
|
|
0xffff, /* dst_mask */
|
| 415 |
|
|
false), /* pcrel_offset */
|
| 416 |
|
|
|
| 417 |
|
|
/* This is used only by the dynamic linker. The symbol should exist
|
| 418 |
|
|
both in the object being run and in some shared library. The
|
| 419 |
|
|
dynamic linker copies the data addressed by the symbol from the
|
| 420 |
|
|
shared library into the object, because the object being
|
| 421 |
|
|
run has to have the data at some particular address. */
|
| 422 |
|
|
HOWTO (R_PPC64_COPY, /* type */
|
| 423 |
|
|
0, /* rightshift */
|
| 424 |
|
|
0, /* this one is variable size */
|
| 425 |
|
|
0, /* bitsize */
|
| 426 |
|
|
false, /* pc_relative */
|
| 427 |
|
|
0, /* bitpos */
|
| 428 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 429 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 430 |
|
|
"R_PPC64_COPY", /* name */
|
| 431 |
|
|
false, /* partial_inplace */
|
| 432 |
|
|
0, /* src_mask */
|
| 433 |
|
|
0, /* dst_mask */
|
| 434 |
|
|
false), /* pcrel_offset */
|
| 435 |
|
|
|
| 436 |
|
|
/* Like R_PPC64_ADDR64, but used when setting global offset table
|
| 437 |
|
|
entries. */
|
| 438 |
|
|
HOWTO (R_PPC64_GLOB_DAT, /* type */
|
| 439 |
|
|
0, /* rightshift */
|
| 440 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 441 |
|
|
64, /* bitsize */
|
| 442 |
|
|
false, /* pc_relative */
|
| 443 |
|
|
0, /* bitpos */
|
| 444 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 445 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 446 |
|
|
"R_PPC64_GLOB_DAT", /* name */
|
| 447 |
|
|
false, /* partial_inplace */
|
| 448 |
|
|
0, /* src_mask */
|
| 449 |
|
|
ONES (64), /* dst_mask */
|
| 450 |
|
|
false), /* pcrel_offset */
|
| 451 |
|
|
|
| 452 |
|
|
/* Created by the link editor. Marks a procedure linkage table
|
| 453 |
|
|
entry for a symbol. */
|
| 454 |
|
|
HOWTO (R_PPC64_JMP_SLOT, /* type */
|
| 455 |
|
|
0, /* rightshift */
|
| 456 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 457 |
|
|
0, /* bitsize */
|
| 458 |
|
|
false, /* pc_relative */
|
| 459 |
|
|
0, /* bitpos */
|
| 460 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 461 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 462 |
|
|
"R_PPC64_JMP_SLOT", /* name */
|
| 463 |
|
|
false, /* partial_inplace */
|
| 464 |
|
|
0, /* src_mask */
|
| 465 |
|
|
0, /* dst_mask */
|
| 466 |
|
|
false), /* pcrel_offset */
|
| 467 |
|
|
|
| 468 |
|
|
/* Used only by the dynamic linker. When the object is run, this
|
| 469 |
|
|
doubleword64 is set to the load address of the object, plus the
|
| 470 |
|
|
addend. */
|
| 471 |
|
|
HOWTO (R_PPC64_RELATIVE, /* type */
|
| 472 |
|
|
0, /* rightshift */
|
| 473 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 474 |
|
|
64, /* bitsize */
|
| 475 |
|
|
false, /* pc_relative */
|
| 476 |
|
|
0, /* bitpos */
|
| 477 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 478 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 479 |
|
|
"R_PPC64_RELATIVE", /* name */
|
| 480 |
|
|
false, /* partial_inplace */
|
| 481 |
|
|
0, /* src_mask */
|
| 482 |
|
|
ONES (64), /* dst_mask */
|
| 483 |
|
|
false), /* pcrel_offset */
|
| 484 |
|
|
|
| 485 |
|
|
/* Like R_PPC64_ADDR32, but may be unaligned. */
|
| 486 |
|
|
HOWTO (R_PPC64_UADDR32, /* type */
|
| 487 |
|
|
0, /* rightshift */
|
| 488 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 489 |
|
|
32, /* bitsize */
|
| 490 |
|
|
false, /* pc_relative */
|
| 491 |
|
|
0, /* bitpos */
|
| 492 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 493 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 494 |
|
|
"R_PPC64_UADDR32", /* name */
|
| 495 |
|
|
false, /* partial_inplace */
|
| 496 |
|
|
0, /* src_mask */
|
| 497 |
|
|
0xffffffff, /* dst_mask */
|
| 498 |
|
|
false), /* pcrel_offset */
|
| 499 |
|
|
|
| 500 |
|
|
/* Like R_PPC64_ADDR16, but may be unaligned. */
|
| 501 |
|
|
HOWTO (R_PPC64_UADDR16, /* type */
|
| 502 |
|
|
0, /* rightshift */
|
| 503 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 504 |
|
|
16, /* bitsize */
|
| 505 |
|
|
false, /* pc_relative */
|
| 506 |
|
|
0, /* bitpos */
|
| 507 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 508 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 509 |
|
|
"R_PPC64_UADDR16", /* name */
|
| 510 |
|
|
false, /* partial_inplace */
|
| 511 |
|
|
0, /* src_mask */
|
| 512 |
|
|
0xffff, /* dst_mask */
|
| 513 |
|
|
false), /* pcrel_offset */
|
| 514 |
|
|
|
| 515 |
|
|
/* 32-bit PC relative. */
|
| 516 |
|
|
HOWTO (R_PPC64_REL32, /* type */
|
| 517 |
|
|
0, /* rightshift */
|
| 518 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 519 |
|
|
32, /* bitsize */
|
| 520 |
|
|
true, /* pc_relative */
|
| 521 |
|
|
0, /* bitpos */
|
| 522 |
|
|
/* FIXME: Verify. Was complain_overflow_bitfield. */
|
| 523 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 524 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 525 |
|
|
"R_PPC64_REL32", /* name */
|
| 526 |
|
|
false, /* partial_inplace */
|
| 527 |
|
|
0, /* src_mask */
|
| 528 |
|
|
0xffffffff, /* dst_mask */
|
| 529 |
|
|
true), /* pcrel_offset */
|
| 530 |
|
|
|
| 531 |
|
|
/* 32-bit relocation to the symbol's procedure linkage table. */
|
| 532 |
|
|
HOWTO (R_PPC64_PLT32, /* type */
|
| 533 |
|
|
0, /* rightshift */
|
| 534 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 535 |
|
|
32, /* bitsize */
|
| 536 |
|
|
false, /* pc_relative */
|
| 537 |
|
|
0, /* bitpos */
|
| 538 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 539 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 540 |
|
|
"R_PPC64_PLT32", /* name */
|
| 541 |
|
|
false, /* partial_inplace */
|
| 542 |
|
|
0, /* src_mask */
|
| 543 |
|
|
0xffffffff, /* dst_mask */
|
| 544 |
|
|
false), /* pcrel_offset */
|
| 545 |
|
|
|
| 546 |
|
|
/* 32-bit PC relative relocation to the symbol's procedure linkage table.
|
| 547 |
|
|
FIXME: R_PPC64_PLTREL32 not supported. */
|
| 548 |
|
|
HOWTO (R_PPC64_PLTREL32, /* type */
|
| 549 |
|
|
0, /* rightshift */
|
| 550 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 551 |
|
|
32, /* bitsize */
|
| 552 |
|
|
true, /* pc_relative */
|
| 553 |
|
|
0, /* bitpos */
|
| 554 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 555 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 556 |
|
|
"R_PPC64_PLTREL32", /* name */
|
| 557 |
|
|
false, /* partial_inplace */
|
| 558 |
|
|
0, /* src_mask */
|
| 559 |
|
|
0xffffffff, /* dst_mask */
|
| 560 |
|
|
true), /* pcrel_offset */
|
| 561 |
|
|
|
| 562 |
|
|
/* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
|
| 563 |
|
|
the symbol. */
|
| 564 |
|
|
HOWTO (R_PPC64_PLT16_LO, /* type */
|
| 565 |
|
|
0, /* rightshift */
|
| 566 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 567 |
|
|
16, /* bitsize */
|
| 568 |
|
|
false, /* pc_relative */
|
| 569 |
|
|
0, /* bitpos */
|
| 570 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 571 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 572 |
|
|
"R_PPC64_PLT16_LO", /* name */
|
| 573 |
|
|
false, /* partial_inplace */
|
| 574 |
|
|
0, /* src_mask */
|
| 575 |
|
|
0xffff, /* dst_mask */
|
| 576 |
|
|
false), /* pcrel_offset */
|
| 577 |
|
|
|
| 578 |
|
|
/* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
|
| 579 |
|
|
the symbol. */
|
| 580 |
|
|
HOWTO (R_PPC64_PLT16_HI, /* type */
|
| 581 |
|
|
16, /* rightshift */
|
| 582 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 583 |
|
|
16, /* bitsize */
|
| 584 |
|
|
false, /* pc_relative */
|
| 585 |
|
|
0, /* bitpos */
|
| 586 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 587 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 588 |
|
|
"R_PPC64_PLT16_HI", /* name */
|
| 589 |
|
|
false, /* partial_inplace */
|
| 590 |
|
|
0, /* src_mask */
|
| 591 |
|
|
0xffff, /* dst_mask */
|
| 592 |
|
|
false), /* pcrel_offset */
|
| 593 |
|
|
|
| 594 |
|
|
/* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
|
| 595 |
|
|
the symbol. */
|
| 596 |
|
|
HOWTO (R_PPC64_PLT16_HA, /* type */
|
| 597 |
|
|
16, /* rightshift */
|
| 598 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 599 |
|
|
16, /* bitsize */
|
| 600 |
|
|
false, /* pc_relative */
|
| 601 |
|
|
0, /* bitpos */
|
| 602 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 603 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 604 |
|
|
"R_PPC64_PLT16_HA", /* name */
|
| 605 |
|
|
false, /* partial_inplace */
|
| 606 |
|
|
0, /* src_mask */
|
| 607 |
|
|
0xffff, /* dst_mask */
|
| 608 |
|
|
false), /* pcrel_offset */
|
| 609 |
|
|
|
| 610 |
|
|
/* 16-bit section relative relocation. */
|
| 611 |
|
|
HOWTO (R_PPC64_SECTOFF, /* type */
|
| 612 |
|
|
0, /* rightshift */
|
| 613 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 614 |
|
|
16, /* bitsize */
|
| 615 |
|
|
false, /* pc_relative */
|
| 616 |
|
|
0, /* bitpos */
|
| 617 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 618 |
|
|
ppc64_elf_sectoff_reloc, /* special_function */
|
| 619 |
|
|
"R_PPC64_SECTOFF", /* name */
|
| 620 |
|
|
false, /* partial_inplace */
|
| 621 |
|
|
0, /* src_mask */
|
| 622 |
|
|
0xffff, /* dst_mask */
|
| 623 |
|
|
false), /* pcrel_offset */
|
| 624 |
|
|
|
| 625 |
|
|
/* Like R_PPC64_SECTOFF, but no overflow warning. */
|
| 626 |
|
|
HOWTO (R_PPC64_SECTOFF_LO, /* type */
|
| 627 |
|
|
0, /* rightshift */
|
| 628 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 629 |
|
|
16, /* bitsize */
|
| 630 |
|
|
false, /* pc_relative */
|
| 631 |
|
|
0, /* bitpos */
|
| 632 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 633 |
|
|
ppc64_elf_sectoff_reloc, /* special_function */
|
| 634 |
|
|
"R_PPC64_SECTOFF_LO", /* name */
|
| 635 |
|
|
false, /* partial_inplace */
|
| 636 |
|
|
0, /* src_mask */
|
| 637 |
|
|
0xffff, /* dst_mask */
|
| 638 |
|
|
false), /* pcrel_offset */
|
| 639 |
|
|
|
| 640 |
|
|
/* 16-bit upper half section relative relocation. */
|
| 641 |
|
|
HOWTO (R_PPC64_SECTOFF_HI, /* type */
|
| 642 |
|
|
16, /* rightshift */
|
| 643 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 644 |
|
|
16, /* bitsize */
|
| 645 |
|
|
false, /* pc_relative */
|
| 646 |
|
|
0, /* bitpos */
|
| 647 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 648 |
|
|
ppc64_elf_sectoff_reloc, /* special_function */
|
| 649 |
|
|
"R_PPC64_SECTOFF_HI", /* name */
|
| 650 |
|
|
false, /* partial_inplace */
|
| 651 |
|
|
0, /* src_mask */
|
| 652 |
|
|
0xffff, /* dst_mask */
|
| 653 |
|
|
false), /* pcrel_offset */
|
| 654 |
|
|
|
| 655 |
|
|
/* 16-bit upper half adjusted section relative relocation. */
|
| 656 |
|
|
HOWTO (R_PPC64_SECTOFF_HA, /* type */
|
| 657 |
|
|
16, /* rightshift */
|
| 658 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 659 |
|
|
16, /* bitsize */
|
| 660 |
|
|
false, /* pc_relative */
|
| 661 |
|
|
0, /* bitpos */
|
| 662 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 663 |
|
|
ppc64_elf_sectoff_ha_reloc, /* special_function */
|
| 664 |
|
|
"R_PPC64_SECTOFF_HA", /* name */
|
| 665 |
|
|
false, /* partial_inplace */
|
| 666 |
|
|
0, /* src_mask */
|
| 667 |
|
|
0xffff, /* dst_mask */
|
| 668 |
|
|
false), /* pcrel_offset */
|
| 669 |
|
|
|
| 670 |
|
|
/* Like R_PPC64_REL24 without touching the two least significant
|
| 671 |
|
|
bits. Should have been named R_PPC64_REL30! */
|
| 672 |
|
|
HOWTO (R_PPC64_ADDR30, /* type */
|
| 673 |
|
|
2, /* rightshift */
|
| 674 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 675 |
|
|
30, /* bitsize */
|
| 676 |
|
|
true, /* pc_relative */
|
| 677 |
|
|
0, /* bitpos */
|
| 678 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 679 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 680 |
|
|
"R_PPC64_ADDR30", /* name */
|
| 681 |
|
|
false, /* partial_inplace */
|
| 682 |
|
|
0, /* src_mask */
|
| 683 |
|
|
0xfffffffc, /* dst_mask */
|
| 684 |
|
|
true), /* pcrel_offset */
|
| 685 |
|
|
|
| 686 |
|
|
/* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
|
| 687 |
|
|
|
| 688 |
|
|
/* A standard 64-bit relocation. */
|
| 689 |
|
|
HOWTO (R_PPC64_ADDR64, /* type */
|
| 690 |
|
|
0, /* rightshift */
|
| 691 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 692 |
|
|
64, /* bitsize */
|
| 693 |
|
|
false, /* pc_relative */
|
| 694 |
|
|
0, /* bitpos */
|
| 695 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 696 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 697 |
|
|
"R_PPC64_ADDR64", /* name */
|
| 698 |
|
|
false, /* partial_inplace */
|
| 699 |
|
|
0, /* src_mask */
|
| 700 |
|
|
ONES (64), /* dst_mask */
|
| 701 |
|
|
false), /* pcrel_offset */
|
| 702 |
|
|
|
| 703 |
|
|
/* The bits 32-47 of an address. */
|
| 704 |
|
|
HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
|
| 705 |
|
|
32, /* rightshift */
|
| 706 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 707 |
|
|
16, /* bitsize */
|
| 708 |
|
|
false, /* pc_relative */
|
| 709 |
|
|
0, /* bitpos */
|
| 710 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 711 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 712 |
|
|
"R_PPC64_ADDR16_HIGHER", /* name */
|
| 713 |
|
|
false, /* partial_inplace */
|
| 714 |
|
|
0, /* src_mask */
|
| 715 |
|
|
0xffff, /* dst_mask */
|
| 716 |
|
|
false), /* pcrel_offset */
|
| 717 |
|
|
|
| 718 |
|
|
/* The bits 32-47 of an address, plus 1 if the contents of the low
|
| 719 |
|
|
16 bits, treated as a signed number, is negative. */
|
| 720 |
|
|
HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
|
| 721 |
|
|
32, /* rightshift */
|
| 722 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 723 |
|
|
16, /* bitsize */
|
| 724 |
|
|
false, /* pc_relative */
|
| 725 |
|
|
0, /* bitpos */
|
| 726 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 727 |
|
|
ppc64_elf_ha_reloc, /* special_function */
|
| 728 |
|
|
"R_PPC64_ADDR16_HIGHERA", /* name */
|
| 729 |
|
|
false, /* partial_inplace */
|
| 730 |
|
|
0, /* src_mask */
|
| 731 |
|
|
0xffff, /* dst_mask */
|
| 732 |
|
|
false), /* pcrel_offset */
|
| 733 |
|
|
|
| 734 |
|
|
/* The bits 48-63 of an address. */
|
| 735 |
|
|
HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
|
| 736 |
|
|
48, /* rightshift */
|
| 737 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 738 |
|
|
16, /* bitsize */
|
| 739 |
|
|
false, /* pc_relative */
|
| 740 |
|
|
0, /* bitpos */
|
| 741 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 742 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 743 |
|
|
"R_PPC64_ADDR16_HIGHEST", /* name */
|
| 744 |
|
|
false, /* partial_inplace */
|
| 745 |
|
|
0, /* src_mask */
|
| 746 |
|
|
0xffff, /* dst_mask */
|
| 747 |
|
|
false), /* pcrel_offset */
|
| 748 |
|
|
|
| 749 |
|
|
/* The bits 48-63 of an address, plus 1 if the contents of the low
|
| 750 |
|
|
16 bits, treated as a signed number, is negative. */
|
| 751 |
|
|
HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
|
| 752 |
|
|
48, /* rightshift */
|
| 753 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 754 |
|
|
16, /* bitsize */
|
| 755 |
|
|
false, /* pc_relative */
|
| 756 |
|
|
0, /* bitpos */
|
| 757 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 758 |
|
|
ppc64_elf_ha_reloc, /* special_function */
|
| 759 |
|
|
"R_PPC64_ADDR16_HIGHESTA", /* name */
|
| 760 |
|
|
false, /* partial_inplace */
|
| 761 |
|
|
0, /* src_mask */
|
| 762 |
|
|
0xffff, /* dst_mask */
|
| 763 |
|
|
false), /* pcrel_offset */
|
| 764 |
|
|
|
| 765 |
|
|
/* Like ADDR64, but may be unaligned. */
|
| 766 |
|
|
HOWTO (R_PPC64_UADDR64, /* type */
|
| 767 |
|
|
0, /* rightshift */
|
| 768 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 769 |
|
|
64, /* bitsize */
|
| 770 |
|
|
false, /* pc_relative */
|
| 771 |
|
|
0, /* bitpos */
|
| 772 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 773 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 774 |
|
|
"R_PPC64_UADDR64", /* name */
|
| 775 |
|
|
false, /* partial_inplace */
|
| 776 |
|
|
0, /* src_mask */
|
| 777 |
|
|
ONES (64), /* dst_mask */
|
| 778 |
|
|
false), /* pcrel_offset */
|
| 779 |
|
|
|
| 780 |
|
|
/* 64-bit relative relocation. */
|
| 781 |
|
|
HOWTO (R_PPC64_REL64, /* type */
|
| 782 |
|
|
0, /* rightshift */
|
| 783 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 784 |
|
|
64, /* bitsize */
|
| 785 |
|
|
true, /* pc_relative */
|
| 786 |
|
|
0, /* bitpos */
|
| 787 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 788 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 789 |
|
|
"R_PPC64_REL64", /* name */
|
| 790 |
|
|
false, /* partial_inplace */
|
| 791 |
|
|
0, /* src_mask */
|
| 792 |
|
|
ONES (64), /* dst_mask */
|
| 793 |
|
|
true), /* pcrel_offset */
|
| 794 |
|
|
|
| 795 |
|
|
/* 64-bit relocation to the symbol's procedure linkage table. */
|
| 796 |
|
|
HOWTO (R_PPC64_PLT64, /* type */
|
| 797 |
|
|
0, /* rightshift */
|
| 798 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 799 |
|
|
64, /* bitsize */
|
| 800 |
|
|
false, /* pc_relative */
|
| 801 |
|
|
0, /* bitpos */
|
| 802 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 803 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 804 |
|
|
"R_PPC64_PLT64", /* name */
|
| 805 |
|
|
false, /* partial_inplace */
|
| 806 |
|
|
0, /* src_mask */
|
| 807 |
|
|
ONES (64), /* dst_mask */
|
| 808 |
|
|
false), /* pcrel_offset */
|
| 809 |
|
|
|
| 810 |
|
|
/* 64-bit PC relative relocation to the symbol's procedure linkage
|
| 811 |
|
|
table. */
|
| 812 |
|
|
/* FIXME: R_PPC64_PLTREL64 not supported. */
|
| 813 |
|
|
HOWTO (R_PPC64_PLTREL64, /* type */
|
| 814 |
|
|
0, /* rightshift */
|
| 815 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 816 |
|
|
64, /* bitsize */
|
| 817 |
|
|
true, /* pc_relative */
|
| 818 |
|
|
0, /* bitpos */
|
| 819 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 820 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 821 |
|
|
"R_PPC64_PLTREL64", /* name */
|
| 822 |
|
|
false, /* partial_inplace */
|
| 823 |
|
|
0, /* src_mask */
|
| 824 |
|
|
ONES (64), /* dst_mask */
|
| 825 |
|
|
true), /* pcrel_offset */
|
| 826 |
|
|
|
| 827 |
|
|
/* 16 bit TOC-relative relocation. */
|
| 828 |
|
|
|
| 829 |
|
|
/* R_PPC64_TOC16 47 half16* S + A - .TOC. */
|
| 830 |
|
|
HOWTO (R_PPC64_TOC16, /* type */
|
| 831 |
|
|
0, /* rightshift */
|
| 832 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 833 |
|
|
16, /* bitsize */
|
| 834 |
|
|
false, /* pc_relative */
|
| 835 |
|
|
0, /* bitpos */
|
| 836 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 837 |
|
|
ppc64_elf_toc_reloc, /* special_function */
|
| 838 |
|
|
"R_PPC64_TOC16", /* name */
|
| 839 |
|
|
false, /* partial_inplace */
|
| 840 |
|
|
0, /* src_mask */
|
| 841 |
|
|
0xffff, /* dst_mask */
|
| 842 |
|
|
false), /* pcrel_offset */
|
| 843 |
|
|
|
| 844 |
|
|
/* 16 bit TOC-relative relocation without overflow. */
|
| 845 |
|
|
|
| 846 |
|
|
/* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
|
| 847 |
|
|
HOWTO (R_PPC64_TOC16_LO, /* type */
|
| 848 |
|
|
0, /* rightshift */
|
| 849 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 850 |
|
|
16, /* bitsize */
|
| 851 |
|
|
false, /* pc_relative */
|
| 852 |
|
|
0, /* bitpos */
|
| 853 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 854 |
|
|
ppc64_elf_toc_reloc, /* special_function */
|
| 855 |
|
|
"R_PPC64_TOC16_LO", /* name */
|
| 856 |
|
|
false, /* partial_inplace */
|
| 857 |
|
|
0, /* src_mask */
|
| 858 |
|
|
0xffff, /* dst_mask */
|
| 859 |
|
|
false), /* pcrel_offset */
|
| 860 |
|
|
|
| 861 |
|
|
/* 16 bit TOC-relative relocation, high 16 bits. */
|
| 862 |
|
|
|
| 863 |
|
|
/* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
|
| 864 |
|
|
HOWTO (R_PPC64_TOC16_HI, /* type */
|
| 865 |
|
|
16, /* rightshift */
|
| 866 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 867 |
|
|
16, /* bitsize */
|
| 868 |
|
|
false, /* pc_relative */
|
| 869 |
|
|
0, /* bitpos */
|
| 870 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 871 |
|
|
ppc64_elf_toc_reloc, /* special_function */
|
| 872 |
|
|
"R_PPC64_TOC16_HI", /* name */
|
| 873 |
|
|
false, /* partial_inplace */
|
| 874 |
|
|
0, /* src_mask */
|
| 875 |
|
|
0xffff, /* dst_mask */
|
| 876 |
|
|
false), /* pcrel_offset */
|
| 877 |
|
|
|
| 878 |
|
|
/* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
|
| 879 |
|
|
contents of the low 16 bits, treated as a signed number, is
|
| 880 |
|
|
negative. */
|
| 881 |
|
|
|
| 882 |
|
|
/* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
|
| 883 |
|
|
HOWTO (R_PPC64_TOC16_HA, /* type */
|
| 884 |
|
|
16, /* rightshift */
|
| 885 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 886 |
|
|
16, /* bitsize */
|
| 887 |
|
|
false, /* pc_relative */
|
| 888 |
|
|
0, /* bitpos */
|
| 889 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 890 |
|
|
ppc64_elf_toc_ha_reloc, /* special_function */
|
| 891 |
|
|
"R_PPC64_TOC16_HA", /* name */
|
| 892 |
|
|
false, /* partial_inplace */
|
| 893 |
|
|
0, /* src_mask */
|
| 894 |
|
|
0xffff, /* dst_mask */
|
| 895 |
|
|
false), /* pcrel_offset */
|
| 896 |
|
|
|
| 897 |
|
|
/* 64-bit relocation; insert value of TOC base (.TOC.). */
|
| 898 |
|
|
|
| 899 |
|
|
/* R_PPC64_TOC 51 doubleword64 .TOC. */
|
| 900 |
|
|
HOWTO (R_PPC64_TOC, /* type */
|
| 901 |
|
|
0, /* rightshift */
|
| 902 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 903 |
|
|
64, /* bitsize */
|
| 904 |
|
|
false, /* pc_relative */
|
| 905 |
|
|
0, /* bitpos */
|
| 906 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 907 |
|
|
ppc64_elf_toc64_reloc, /* special_function */
|
| 908 |
|
|
"R_PPC64_TOC", /* name */
|
| 909 |
|
|
false, /* partial_inplace */
|
| 910 |
|
|
0, /* src_mask */
|
| 911 |
|
|
ONES (64), /* dst_mask */
|
| 912 |
|
|
false), /* pcrel_offset */
|
| 913 |
|
|
|
| 914 |
|
|
/* Like R_PPC64_GOT16, but also informs the link editor that the
|
| 915 |
|
|
value to relocate may (!) refer to a PLT entry which the link
|
| 916 |
|
|
editor (a) may replace with the symbol value. If the link editor
|
| 917 |
|
|
is unable to fully resolve the symbol, it may (b) create a PLT
|
| 918 |
|
|
entry and store the address to the new PLT entry in the GOT.
|
| 919 |
|
|
This permits lazy resolution of function symbols at run time.
|
| 920 |
|
|
The link editor may also skip all of this and just (c) emit a
|
| 921 |
|
|
R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
|
| 922 |
|
|
/* FIXME: R_PPC64_PLTGOT16 not implemented. */
|
| 923 |
|
|
HOWTO (R_PPC64_PLTGOT16, /* type */
|
| 924 |
|
|
0, /* rightshift */
|
| 925 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 926 |
|
|
16, /* bitsize */
|
| 927 |
|
|
false, /* pc_relative */
|
| 928 |
|
|
0, /* bitpos */
|
| 929 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 930 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 931 |
|
|
"R_PPC64_PLTGOT16", /* name */
|
| 932 |
|
|
false, /* partial_inplace */
|
| 933 |
|
|
0, /* src_mask */
|
| 934 |
|
|
0xffff, /* dst_mask */
|
| 935 |
|
|
false), /* pcrel_offset */
|
| 936 |
|
|
|
| 937 |
|
|
/* Like R_PPC64_PLTGOT16, but without overflow. */
|
| 938 |
|
|
/* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
|
| 939 |
|
|
HOWTO (R_PPC64_PLTGOT16_LO, /* type */
|
| 940 |
|
|
0, /* rightshift */
|
| 941 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 942 |
|
|
16, /* bitsize */
|
| 943 |
|
|
false, /* pc_relative */
|
| 944 |
|
|
0, /* bitpos */
|
| 945 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 946 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 947 |
|
|
"R_PPC64_PLTGOT16_LO", /* name */
|
| 948 |
|
|
false, /* partial_inplace */
|
| 949 |
|
|
0, /* src_mask */
|
| 950 |
|
|
0xffff, /* dst_mask */
|
| 951 |
|
|
false), /* pcrel_offset */
|
| 952 |
|
|
|
| 953 |
|
|
/* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
|
| 954 |
|
|
/* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
|
| 955 |
|
|
HOWTO (R_PPC64_PLTGOT16_HI, /* type */
|
| 956 |
|
|
16, /* rightshift */
|
| 957 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 958 |
|
|
16, /* bitsize */
|
| 959 |
|
|
false, /* pc_relative */
|
| 960 |
|
|
0, /* bitpos */
|
| 961 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 962 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 963 |
|
|
"R_PPC64_PLTGOT16_HI", /* name */
|
| 964 |
|
|
false, /* partial_inplace */
|
| 965 |
|
|
0, /* src_mask */
|
| 966 |
|
|
0xffff, /* dst_mask */
|
| 967 |
|
|
false), /* pcrel_offset */
|
| 968 |
|
|
|
| 969 |
|
|
/* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
|
| 970 |
|
|
1 if the contents of the low 16 bits, treated as a signed number,
|
| 971 |
|
|
is negative. */
|
| 972 |
|
|
/* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
|
| 973 |
|
|
HOWTO (R_PPC64_PLTGOT16_HA, /* type */
|
| 974 |
|
|
16, /* rightshift */
|
| 975 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 976 |
|
|
16, /* bitsize */
|
| 977 |
|
|
false, /* pc_relative */
|
| 978 |
|
|
0, /* bitpos */
|
| 979 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 980 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 981 |
|
|
"R_PPC64_PLTGOT16_HA", /* name */
|
| 982 |
|
|
false, /* partial_inplace */
|
| 983 |
|
|
0, /* src_mask */
|
| 984 |
|
|
0xffff, /* dst_mask */
|
| 985 |
|
|
false), /* pcrel_offset */
|
| 986 |
|
|
|
| 987 |
|
|
/* Like R_PPC64_ADDR16, but for instructions with a DS field. */
|
| 988 |
|
|
HOWTO (R_PPC64_ADDR16_DS, /* type */
|
| 989 |
|
|
0, /* rightshift */
|
| 990 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 991 |
|
|
16, /* bitsize */
|
| 992 |
|
|
false, /* pc_relative */
|
| 993 |
|
|
0, /* bitpos */
|
| 994 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 995 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 996 |
|
|
"R_PPC64_ADDR16_DS", /* name */
|
| 997 |
|
|
false, /* partial_inplace */
|
| 998 |
|
|
0, /* src_mask */
|
| 999 |
|
|
0xfffc, /* dst_mask */
|
| 1000 |
|
|
false), /* pcrel_offset */
|
| 1001 |
|
|
|
| 1002 |
|
|
/* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
|
| 1003 |
|
|
HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
|
| 1004 |
|
|
0, /* rightshift */
|
| 1005 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1006 |
|
|
16, /* bitsize */
|
| 1007 |
|
|
false, /* pc_relative */
|
| 1008 |
|
|
0, /* bitpos */
|
| 1009 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1010 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1011 |
|
|
"R_PPC64_ADDR16_LO_DS",/* name */
|
| 1012 |
|
|
false, /* partial_inplace */
|
| 1013 |
|
|
0, /* src_mask */
|
| 1014 |
|
|
0xfffc, /* dst_mask */
|
| 1015 |
|
|
false), /* pcrel_offset */
|
| 1016 |
|
|
|
| 1017 |
|
|
/* Like R_PPC64_GOT16, but for instructions with a DS field. */
|
| 1018 |
|
|
HOWTO (R_PPC64_GOT16_DS, /* type */
|
| 1019 |
|
|
0, /* rightshift */
|
| 1020 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1021 |
|
|
16, /* bitsize */
|
| 1022 |
|
|
false, /* pc_relative */
|
| 1023 |
|
|
0, /* bitpos */
|
| 1024 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1025 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1026 |
|
|
"R_PPC64_GOT16_DS", /* name */
|
| 1027 |
|
|
false, /* partial_inplace */
|
| 1028 |
|
|
0, /* src_mask */
|
| 1029 |
|
|
0xfffc, /* dst_mask */
|
| 1030 |
|
|
false), /* pcrel_offset */
|
| 1031 |
|
|
|
| 1032 |
|
|
/* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
|
| 1033 |
|
|
HOWTO (R_PPC64_GOT16_LO_DS, /* type */
|
| 1034 |
|
|
0, /* rightshift */
|
| 1035 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1036 |
|
|
16, /* bitsize */
|
| 1037 |
|
|
false, /* pc_relative */
|
| 1038 |
|
|
0, /* bitpos */
|
| 1039 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1040 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1041 |
|
|
"R_PPC64_GOT16_LO_DS", /* name */
|
| 1042 |
|
|
false, /* partial_inplace */
|
| 1043 |
|
|
0, /* src_mask */
|
| 1044 |
|
|
0xfffc, /* dst_mask */
|
| 1045 |
|
|
false), /* pcrel_offset */
|
| 1046 |
|
|
|
| 1047 |
|
|
/* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
|
| 1048 |
|
|
HOWTO (R_PPC64_PLT16_LO_DS, /* type */
|
| 1049 |
|
|
0, /* rightshift */
|
| 1050 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1051 |
|
|
16, /* bitsize */
|
| 1052 |
|
|
false, /* pc_relative */
|
| 1053 |
|
|
0, /* bitpos */
|
| 1054 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1055 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1056 |
|
|
"R_PPC64_PLT16_LO_DS", /* name */
|
| 1057 |
|
|
false, /* partial_inplace */
|
| 1058 |
|
|
0, /* src_mask */
|
| 1059 |
|
|
0xfffc, /* dst_mask */
|
| 1060 |
|
|
false), /* pcrel_offset */
|
| 1061 |
|
|
|
| 1062 |
|
|
/* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
|
| 1063 |
|
|
HOWTO (R_PPC64_SECTOFF_DS, /* type */
|
| 1064 |
|
|
0, /* rightshift */
|
| 1065 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1066 |
|
|
16, /* bitsize */
|
| 1067 |
|
|
false, /* pc_relative */
|
| 1068 |
|
|
0, /* bitpos */
|
| 1069 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 1070 |
|
|
ppc64_elf_sectoff_reloc, /* special_function */
|
| 1071 |
|
|
"R_PPC64_SECTOFF_DS", /* name */
|
| 1072 |
|
|
false, /* partial_inplace */
|
| 1073 |
|
|
0, /* src_mask */
|
| 1074 |
|
|
0xfffc, /* dst_mask */
|
| 1075 |
|
|
false), /* pcrel_offset */
|
| 1076 |
|
|
|
| 1077 |
|
|
/* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
|
| 1078 |
|
|
HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
|
| 1079 |
|
|
0, /* rightshift */
|
| 1080 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1081 |
|
|
16, /* bitsize */
|
| 1082 |
|
|
false, /* pc_relative */
|
| 1083 |
|
|
0, /* bitpos */
|
| 1084 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1085 |
|
|
ppc64_elf_sectoff_reloc, /* special_function */
|
| 1086 |
|
|
"R_PPC64_SECTOFF_LO_DS",/* name */
|
| 1087 |
|
|
false, /* partial_inplace */
|
| 1088 |
|
|
0, /* src_mask */
|
| 1089 |
|
|
0xfffc, /* dst_mask */
|
| 1090 |
|
|
false), /* pcrel_offset */
|
| 1091 |
|
|
|
| 1092 |
|
|
/* Like R_PPC64_TOC16, but for instructions with a DS field. */
|
| 1093 |
|
|
HOWTO (R_PPC64_TOC16_DS, /* type */
|
| 1094 |
|
|
0, /* rightshift */
|
| 1095 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1096 |
|
|
16, /* bitsize */
|
| 1097 |
|
|
false, /* pc_relative */
|
| 1098 |
|
|
0, /* bitpos */
|
| 1099 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1100 |
|
|
ppc64_elf_toc_reloc, /* special_function */
|
| 1101 |
|
|
"R_PPC64_TOC16_DS", /* name */
|
| 1102 |
|
|
false, /* partial_inplace */
|
| 1103 |
|
|
0, /* src_mask */
|
| 1104 |
|
|
0xfffc, /* dst_mask */
|
| 1105 |
|
|
false), /* pcrel_offset */
|
| 1106 |
|
|
|
| 1107 |
|
|
/* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
|
| 1108 |
|
|
HOWTO (R_PPC64_TOC16_LO_DS, /* type */
|
| 1109 |
|
|
0, /* rightshift */
|
| 1110 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1111 |
|
|
16, /* bitsize */
|
| 1112 |
|
|
false, /* pc_relative */
|
| 1113 |
|
|
0, /* bitpos */
|
| 1114 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1115 |
|
|
ppc64_elf_toc_reloc, /* special_function */
|
| 1116 |
|
|
"R_PPC64_TOC16_LO_DS", /* name */
|
| 1117 |
|
|
false, /* partial_inplace */
|
| 1118 |
|
|
0, /* src_mask */
|
| 1119 |
|
|
0xfffc, /* dst_mask */
|
| 1120 |
|
|
false), /* pcrel_offset */
|
| 1121 |
|
|
|
| 1122 |
|
|
/* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
|
| 1123 |
|
|
/* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
|
| 1124 |
|
|
HOWTO (R_PPC64_PLTGOT16_DS, /* type */
|
| 1125 |
|
|
0, /* rightshift */
|
| 1126 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1127 |
|
|
16, /* bitsize */
|
| 1128 |
|
|
false, /* pc_relative */
|
| 1129 |
|
|
0, /* bitpos */
|
| 1130 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1131 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1132 |
|
|
"R_PPC64_PLTGOT16_DS", /* name */
|
| 1133 |
|
|
false, /* partial_inplace */
|
| 1134 |
|
|
0, /* src_mask */
|
| 1135 |
|
|
0xfffc, /* dst_mask */
|
| 1136 |
|
|
false), /* pcrel_offset */
|
| 1137 |
|
|
|
| 1138 |
|
|
/* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
|
| 1139 |
|
|
/* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
|
| 1140 |
|
|
HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
|
| 1141 |
|
|
0, /* rightshift */
|
| 1142 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1143 |
|
|
16, /* bitsize */
|
| 1144 |
|
|
false, /* pc_relative */
|
| 1145 |
|
|
0, /* bitpos */
|
| 1146 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1147 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1148 |
|
|
"R_PPC64_PLTGOT16_LO_DS",/* name */
|
| 1149 |
|
|
false, /* partial_inplace */
|
| 1150 |
|
|
0, /* src_mask */
|
| 1151 |
|
|
0xfffc, /* dst_mask */
|
| 1152 |
|
|
false), /* pcrel_offset */
|
| 1153 |
|
|
|
| 1154 |
|
|
/* GNU extension to record C++ vtable hierarchy. */
|
| 1155 |
|
|
HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
|
| 1156 |
|
|
0, /* rightshift */
|
| 1157 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1158 |
|
|
0, /* bitsize */
|
| 1159 |
|
|
false, /* pc_relative */
|
| 1160 |
|
|
0, /* bitpos */
|
| 1161 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1162 |
|
|
NULL, /* special_function */
|
| 1163 |
|
|
"R_PPC64_GNU_VTINHERIT", /* name */
|
| 1164 |
|
|
false, /* partial_inplace */
|
| 1165 |
|
|
0, /* src_mask */
|
| 1166 |
|
|
0, /* dst_mask */
|
| 1167 |
|
|
false), /* pcrel_offset */
|
| 1168 |
|
|
|
| 1169 |
|
|
/* GNU extension to record C++ vtable member usage. */
|
| 1170 |
|
|
HOWTO (R_PPC64_GNU_VTENTRY, /* type */
|
| 1171 |
|
|
0, /* rightshift */
|
| 1172 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1173 |
|
|
0, /* bitsize */
|
| 1174 |
|
|
false, /* pc_relative */
|
| 1175 |
|
|
0, /* bitpos */
|
| 1176 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1177 |
|
|
NULL, /* special_function */
|
| 1178 |
|
|
"R_PPC64_GNU_VTENTRY", /* name */
|
| 1179 |
|
|
false, /* partial_inplace */
|
| 1180 |
|
|
0, /* src_mask */
|
| 1181 |
|
|
0, /* dst_mask */
|
| 1182 |
|
|
false), /* pcrel_offset */
|
| 1183 |
|
|
};
|
| 1184 |
|
|
|
| 1185 |
|
|
|
| 1186 |
|
|
/* Initialize the ppc64_elf_howto_table, so that linear accesses can
|
| 1187 |
|
|
be done. */
|
| 1188 |
|
|
|
| 1189 |
|
|
static void
|
| 1190 |
|
|
ppc_howto_init ()
|
| 1191 |
|
|
{
|
| 1192 |
|
|
unsigned int i, type;
|
| 1193 |
|
|
|
| 1194 |
|
|
for (i = 0;
|
| 1195 |
|
|
i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
|
| 1196 |
|
|
i++)
|
| 1197 |
|
|
{
|
| 1198 |
|
|
type = ppc64_elf_howto_raw[i].type;
|
| 1199 |
|
|
BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
|
| 1200 |
|
|
/ sizeof (ppc64_elf_howto_table[0])));
|
| 1201 |
|
|
ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
|
| 1202 |
|
|
}
|
| 1203 |
|
|
}
|
| 1204 |
|
|
|
| 1205 |
|
|
static reloc_howto_type *
|
| 1206 |
|
|
ppc64_elf_reloc_type_lookup (abfd, code)
|
| 1207 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
| 1208 |
|
|
bfd_reloc_code_real_type code;
|
| 1209 |
|
|
{
|
| 1210 |
|
|
enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
|
| 1211 |
|
|
|
| 1212 |
|
|
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
|
| 1213 |
|
|
/* Initialize howto table if needed. */
|
| 1214 |
|
|
ppc_howto_init ();
|
| 1215 |
|
|
|
| 1216 |
|
|
switch ((int) code)
|
| 1217 |
|
|
{
|
| 1218 |
|
|
default:
|
| 1219 |
|
|
return (reloc_howto_type *) NULL;
|
| 1220 |
|
|
|
| 1221 |
|
|
case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE;
|
| 1222 |
|
|
break;
|
| 1223 |
|
|
case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32;
|
| 1224 |
|
|
break;
|
| 1225 |
|
|
case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24;
|
| 1226 |
|
|
break;
|
| 1227 |
|
|
case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16;
|
| 1228 |
|
|
break;
|
| 1229 |
|
|
case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO;
|
| 1230 |
|
|
break;
|
| 1231 |
|
|
case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI;
|
| 1232 |
|
|
break;
|
| 1233 |
|
|
case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA;
|
| 1234 |
|
|
break;
|
| 1235 |
|
|
case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14;
|
| 1236 |
|
|
break;
|
| 1237 |
|
|
case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN;
|
| 1238 |
|
|
break;
|
| 1239 |
|
|
case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN;
|
| 1240 |
|
|
break;
|
| 1241 |
|
|
case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24;
|
| 1242 |
|
|
break;
|
| 1243 |
|
|
case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14;
|
| 1244 |
|
|
break;
|
| 1245 |
|
|
case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN;
|
| 1246 |
|
|
break;
|
| 1247 |
|
|
case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN;
|
| 1248 |
|
|
break;
|
| 1249 |
|
|
case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16;
|
| 1250 |
|
|
break;
|
| 1251 |
|
|
case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO;
|
| 1252 |
|
|
break;
|
| 1253 |
|
|
case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI;
|
| 1254 |
|
|
break;
|
| 1255 |
|
|
case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA;
|
| 1256 |
|
|
break;
|
| 1257 |
|
|
case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY;
|
| 1258 |
|
|
break;
|
| 1259 |
|
|
case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT;
|
| 1260 |
|
|
break;
|
| 1261 |
|
|
case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32;
|
| 1262 |
|
|
break;
|
| 1263 |
|
|
case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32;
|
| 1264 |
|
|
break;
|
| 1265 |
|
|
case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32;
|
| 1266 |
|
|
break;
|
| 1267 |
|
|
case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO;
|
| 1268 |
|
|
break;
|
| 1269 |
|
|
case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI;
|
| 1270 |
|
|
break;
|
| 1271 |
|
|
case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA;
|
| 1272 |
|
|
break;
|
| 1273 |
|
|
case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC64_SECTOFF;
|
| 1274 |
|
|
break;
|
| 1275 |
|
|
case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO;
|
| 1276 |
|
|
break;
|
| 1277 |
|
|
case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI;
|
| 1278 |
|
|
break;
|
| 1279 |
|
|
case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA;
|
| 1280 |
|
|
break;
|
| 1281 |
|
|
case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR64;
|
| 1282 |
|
|
break;
|
| 1283 |
|
|
case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64;
|
| 1284 |
|
|
break;
|
| 1285 |
|
|
case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER;
|
| 1286 |
|
|
break;
|
| 1287 |
|
|
case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA;
|
| 1288 |
|
|
break;
|
| 1289 |
|
|
case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST;
|
| 1290 |
|
|
break;
|
| 1291 |
|
|
case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA;
|
| 1292 |
|
|
break;
|
| 1293 |
|
|
case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64;
|
| 1294 |
|
|
break;
|
| 1295 |
|
|
case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64;
|
| 1296 |
|
|
break;
|
| 1297 |
|
|
case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64;
|
| 1298 |
|
|
break;
|
| 1299 |
|
|
case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16;
|
| 1300 |
|
|
break;
|
| 1301 |
|
|
case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO;
|
| 1302 |
|
|
break;
|
| 1303 |
|
|
case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI;
|
| 1304 |
|
|
break;
|
| 1305 |
|
|
case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA;
|
| 1306 |
|
|
break;
|
| 1307 |
|
|
case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC;
|
| 1308 |
|
|
break;
|
| 1309 |
|
|
case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16;
|
| 1310 |
|
|
break;
|
| 1311 |
|
|
case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO;
|
| 1312 |
|
|
break;
|
| 1313 |
|
|
case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI;
|
| 1314 |
|
|
break;
|
| 1315 |
|
|
case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA;
|
| 1316 |
|
|
break;
|
| 1317 |
|
|
case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS;
|
| 1318 |
|
|
break;
|
| 1319 |
|
|
case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS;
|
| 1320 |
|
|
break;
|
| 1321 |
|
|
case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS;
|
| 1322 |
|
|
break;
|
| 1323 |
|
|
case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS;
|
| 1324 |
|
|
break;
|
| 1325 |
|
|
case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS;
|
| 1326 |
|
|
break;
|
| 1327 |
|
|
case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS;
|
| 1328 |
|
|
break;
|
| 1329 |
|
|
case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS;
|
| 1330 |
|
|
break;
|
| 1331 |
|
|
case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS;
|
| 1332 |
|
|
break;
|
| 1333 |
|
|
case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS;
|
| 1334 |
|
|
break;
|
| 1335 |
|
|
case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS;
|
| 1336 |
|
|
break;
|
| 1337 |
|
|
case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS;
|
| 1338 |
|
|
break;
|
| 1339 |
|
|
case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT;
|
| 1340 |
|
|
break;
|
| 1341 |
|
|
case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY;
|
| 1342 |
|
|
break;
|
| 1343 |
|
|
}
|
| 1344 |
|
|
|
| 1345 |
|
|
return ppc64_elf_howto_table[(int) ppc_reloc];
|
| 1346 |
|
|
};
|
| 1347 |
|
|
|
| 1348 |
|
|
/* Set the howto pointer for a PowerPC ELF reloc. */
|
| 1349 |
|
|
|
| 1350 |
|
|
static void
|
| 1351 |
|
|
ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
|
| 1352 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
| 1353 |
|
|
arelent *cache_ptr;
|
| 1354 |
|
|
Elf64_Internal_Rela *dst;
|
| 1355 |
|
|
{
|
| 1356 |
|
|
unsigned int type;
|
| 1357 |
|
|
|
| 1358 |
|
|
/* Initialize howto table if needed. */
|
| 1359 |
|
|
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
|
| 1360 |
|
|
ppc_howto_init ();
|
| 1361 |
|
|
|
| 1362 |
|
|
type = ELF64_R_TYPE (dst->r_info);
|
| 1363 |
|
|
BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
|
| 1364 |
|
|
/ sizeof (ppc64_elf_howto_table[0])));
|
| 1365 |
|
|
cache_ptr->howto = ppc64_elf_howto_table[type];
|
| 1366 |
|
|
}
|
| 1367 |
|
|
|
| 1368 |
|
|
/* Handle the R_PPC_ADDR16_HA and similar relocs. */
|
| 1369 |
|
|
|
| 1370 |
|
|
static bfd_reloc_status_type
|
| 1371 |
|
|
ppc64_elf_ha_reloc (abfd, reloc_entry, symbol, data,
|
| 1372 |
|
|
input_section, output_bfd, error_message)
|
| 1373 |
|
|
bfd *abfd;
|
| 1374 |
|
|
arelent *reloc_entry;
|
| 1375 |
|
|
asymbol *symbol;
|
| 1376 |
|
|
PTR data;
|
| 1377 |
|
|
asection *input_section;
|
| 1378 |
|
|
bfd *output_bfd;
|
| 1379 |
|
|
char **error_message;
|
| 1380 |
|
|
{
|
| 1381 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 1382 |
|
|
call the generic function. Any adjustment will be done at final
|
| 1383 |
|
|
link time. */
|
| 1384 |
|
|
if (output_bfd != NULL)
|
| 1385 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 1386 |
|
|
input_section, output_bfd, error_message);
|
| 1387 |
|
|
|
| 1388 |
|
|
/* Adjust the addend for sign extension of the low 16 bits.
|
| 1389 |
|
|
We won't actually be using the low 16 bits, so trashing them
|
| 1390 |
|
|
doesn't matter. */
|
| 1391 |
|
|
reloc_entry->addend += 0x8000;
|
| 1392 |
|
|
return bfd_reloc_continue;
|
| 1393 |
|
|
}
|
| 1394 |
|
|
|
| 1395 |
|
|
static bfd_reloc_status_type
|
| 1396 |
|
|
ppc64_elf_brtaken_reloc (abfd, reloc_entry, symbol, data,
|
| 1397 |
|
|
input_section, output_bfd, error_message)
|
| 1398 |
|
|
bfd *abfd;
|
| 1399 |
|
|
arelent *reloc_entry;
|
| 1400 |
|
|
asymbol *symbol;
|
| 1401 |
|
|
PTR data;
|
| 1402 |
|
|
asection *input_section;
|
| 1403 |
|
|
bfd *output_bfd;
|
| 1404 |
|
|
char **error_message;
|
| 1405 |
|
|
{
|
| 1406 |
|
|
long insn;
|
| 1407 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 1408 |
|
|
bfd_size_type octets;
|
| 1409 |
|
|
/* Disabled until we sort out how ld should choose 'y' vs 'at'. */
|
| 1410 |
|
|
boolean is_power4 = false;
|
| 1411 |
|
|
|
| 1412 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 1413 |
|
|
call the generic function. Any adjustment will be done at final
|
| 1414 |
|
|
link time. */
|
| 1415 |
|
|
if (output_bfd != NULL)
|
| 1416 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 1417 |
|
|
input_section, output_bfd, error_message);
|
| 1418 |
|
|
|
| 1419 |
|
|
octets = reloc_entry->address * bfd_octets_per_byte (abfd);
|
| 1420 |
|
|
insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
|
| 1421 |
|
|
insn &= ~(0x01 << 21);
|
| 1422 |
|
|
r_type = (enum elf_ppc_reloc_type) reloc_entry->howto->type;
|
| 1423 |
|
|
if (r_type == R_PPC64_ADDR14_BRTAKEN
|
| 1424 |
|
|
|| r_type == R_PPC64_REL14_BRTAKEN)
|
| 1425 |
|
|
insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
|
| 1426 |
|
|
|
| 1427 |
|
|
if (is_power4)
|
| 1428 |
|
|
{
|
| 1429 |
|
|
/* Set 'a' bit. This is 0b00010 in BO field for branch
|
| 1430 |
|
|
on CR(BI) insns (BO == 001at or 011at), and 0b01000
|
| 1431 |
|
|
for branch on CTR insns (BO == 1a00t or 1a01t). */
|
| 1432 |
|
|
if ((insn & (0x14 << 21)) == (0x04 << 21))
|
| 1433 |
|
|
insn |= 0x02 << 21;
|
| 1434 |
|
|
else if ((insn & (0x14 << 21)) == (0x10 << 21))
|
| 1435 |
|
|
insn |= 0x08 << 21;
|
| 1436 |
|
|
else
|
| 1437 |
|
|
return bfd_reloc_continue;
|
| 1438 |
|
|
}
|
| 1439 |
|
|
else
|
| 1440 |
|
|
{
|
| 1441 |
|
|
bfd_vma target = 0;
|
| 1442 |
|
|
bfd_vma from;
|
| 1443 |
|
|
|
| 1444 |
|
|
if (!bfd_is_com_section (symbol->section))
|
| 1445 |
|
|
target = symbol->value;
|
| 1446 |
|
|
target += symbol->section->output_section->vma;
|
| 1447 |
|
|
target += symbol->section->output_offset;
|
| 1448 |
|
|
target += reloc_entry->addend;
|
| 1449 |
|
|
|
| 1450 |
|
|
from = (reloc_entry->address
|
| 1451 |
|
|
+ input_section->output_offset
|
| 1452 |
|
|
+ input_section->output_section->vma);
|
| 1453 |
|
|
|
| 1454 |
|
|
/* Invert 'y' bit if not the default. */
|
| 1455 |
|
|
if ((bfd_signed_vma) (target - from) < 0)
|
| 1456 |
|
|
insn ^= 0x01 << 21;
|
| 1457 |
|
|
}
|
| 1458 |
|
|
bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + octets);
|
| 1459 |
|
|
return bfd_reloc_continue;
|
| 1460 |
|
|
}
|
| 1461 |
|
|
|
| 1462 |
|
|
static bfd_reloc_status_type
|
| 1463 |
|
|
ppc64_elf_sectoff_reloc (abfd, reloc_entry, symbol, data,
|
| 1464 |
|
|
input_section, output_bfd, error_message)
|
| 1465 |
|
|
bfd *abfd;
|
| 1466 |
|
|
arelent *reloc_entry;
|
| 1467 |
|
|
asymbol *symbol;
|
| 1468 |
|
|
PTR data;
|
| 1469 |
|
|
asection *input_section;
|
| 1470 |
|
|
bfd *output_bfd;
|
| 1471 |
|
|
char **error_message;
|
| 1472 |
|
|
{
|
| 1473 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 1474 |
|
|
call the generic function. Any adjustment will be done at final
|
| 1475 |
|
|
link time. */
|
| 1476 |
|
|
if (output_bfd != NULL)
|
| 1477 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 1478 |
|
|
input_section, output_bfd, error_message);
|
| 1479 |
|
|
|
| 1480 |
|
|
/* Subtract the symbol section base address. */
|
| 1481 |
|
|
reloc_entry->addend -= symbol->section->output_section->vma;
|
| 1482 |
|
|
return bfd_reloc_continue;
|
| 1483 |
|
|
}
|
| 1484 |
|
|
|
| 1485 |
|
|
static bfd_reloc_status_type
|
| 1486 |
|
|
ppc64_elf_sectoff_ha_reloc (abfd, reloc_entry, symbol, data,
|
| 1487 |
|
|
input_section, output_bfd, error_message)
|
| 1488 |
|
|
bfd *abfd;
|
| 1489 |
|
|
arelent *reloc_entry;
|
| 1490 |
|
|
asymbol *symbol;
|
| 1491 |
|
|
PTR data;
|
| 1492 |
|
|
asection *input_section;
|
| 1493 |
|
|
bfd *output_bfd;
|
| 1494 |
|
|
char **error_message;
|
| 1495 |
|
|
{
|
| 1496 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 1497 |
|
|
call the generic function. Any adjustment will be done at final
|
| 1498 |
|
|
link time. */
|
| 1499 |
|
|
if (output_bfd != NULL)
|
| 1500 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 1501 |
|
|
input_section, output_bfd, error_message);
|
| 1502 |
|
|
|
| 1503 |
|
|
/* Subtract the symbol section base address. */
|
| 1504 |
|
|
reloc_entry->addend -= symbol->section->output_section->vma;
|
| 1505 |
|
|
|
| 1506 |
|
|
/* Adjust the addend for sign extension of the low 16 bits. */
|
| 1507 |
|
|
reloc_entry->addend += 0x8000;
|
| 1508 |
|
|
return bfd_reloc_continue;
|
| 1509 |
|
|
}
|
| 1510 |
|
|
|
| 1511 |
|
|
static bfd_reloc_status_type
|
| 1512 |
|
|
ppc64_elf_toc_reloc (abfd, reloc_entry, symbol, data,
|
| 1513 |
|
|
input_section, output_bfd, error_message)
|
| 1514 |
|
|
bfd *abfd;
|
| 1515 |
|
|
arelent *reloc_entry;
|
| 1516 |
|
|
asymbol *symbol;
|
| 1517 |
|
|
PTR data;
|
| 1518 |
|
|
asection *input_section;
|
| 1519 |
|
|
bfd *output_bfd;
|
| 1520 |
|
|
char **error_message;
|
| 1521 |
|
|
{
|
| 1522 |
|
|
bfd_vma TOCstart;
|
| 1523 |
|
|
|
| 1524 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 1525 |
|
|
call the generic function. Any adjustment will be done at final
|
| 1526 |
|
|
link time. */
|
| 1527 |
|
|
if (output_bfd != NULL)
|
| 1528 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 1529 |
|
|
input_section, output_bfd, error_message);
|
| 1530 |
|
|
|
| 1531 |
|
|
TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
|
| 1532 |
|
|
if (TOCstart == 0)
|
| 1533 |
|
|
TOCstart = ppc64_elf_toc (input_section->output_section->owner);
|
| 1534 |
|
|
|
| 1535 |
|
|
/* Subtract the TOC base address. */
|
| 1536 |
|
|
reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
|
| 1537 |
|
|
return bfd_reloc_continue;
|
| 1538 |
|
|
}
|
| 1539 |
|
|
|
| 1540 |
|
|
static bfd_reloc_status_type
|
| 1541 |
|
|
ppc64_elf_toc_ha_reloc (abfd, reloc_entry, symbol, data,
|
| 1542 |
|
|
input_section, output_bfd, error_message)
|
| 1543 |
|
|
bfd *abfd;
|
| 1544 |
|
|
arelent *reloc_entry;
|
| 1545 |
|
|
asymbol *symbol;
|
| 1546 |
|
|
PTR data;
|
| 1547 |
|
|
asection *input_section;
|
| 1548 |
|
|
bfd *output_bfd;
|
| 1549 |
|
|
char **error_message;
|
| 1550 |
|
|
{
|
| 1551 |
|
|
bfd_vma TOCstart;
|
| 1552 |
|
|
|
| 1553 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 1554 |
|
|
call the generic function. Any adjustment will be done at final
|
| 1555 |
|
|
link time. */
|
| 1556 |
|
|
if (output_bfd != NULL)
|
| 1557 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 1558 |
|
|
input_section, output_bfd, error_message);
|
| 1559 |
|
|
|
| 1560 |
|
|
TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
|
| 1561 |
|
|
if (TOCstart == 0)
|
| 1562 |
|
|
TOCstart = ppc64_elf_toc (input_section->output_section->owner);
|
| 1563 |
|
|
|
| 1564 |
|
|
/* Subtract the TOC base address. */
|
| 1565 |
|
|
reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
|
| 1566 |
|
|
|
| 1567 |
|
|
/* Adjust the addend for sign extension of the low 16 bits. */
|
| 1568 |
|
|
reloc_entry->addend += 0x8000;
|
| 1569 |
|
|
return bfd_reloc_continue;
|
| 1570 |
|
|
}
|
| 1571 |
|
|
|
| 1572 |
|
|
static bfd_reloc_status_type
|
| 1573 |
|
|
ppc64_elf_toc64_reloc (abfd, reloc_entry, symbol, data,
|
| 1574 |
|
|
input_section, output_bfd, error_message)
|
| 1575 |
|
|
bfd *abfd;
|
| 1576 |
|
|
arelent *reloc_entry;
|
| 1577 |
|
|
asymbol *symbol;
|
| 1578 |
|
|
PTR data;
|
| 1579 |
|
|
asection *input_section;
|
| 1580 |
|
|
bfd *output_bfd;
|
| 1581 |
|
|
char **error_message;
|
| 1582 |
|
|
{
|
| 1583 |
|
|
bfd_vma TOCstart;
|
| 1584 |
|
|
bfd_size_type octets;
|
| 1585 |
|
|
|
| 1586 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 1587 |
|
|
call the generic function. Any adjustment will be done at final
|
| 1588 |
|
|
link time. */
|
| 1589 |
|
|
if (output_bfd != NULL)
|
| 1590 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 1591 |
|
|
input_section, output_bfd, error_message);
|
| 1592 |
|
|
|
| 1593 |
|
|
TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
|
| 1594 |
|
|
if (TOCstart == 0)
|
| 1595 |
|
|
TOCstart = ppc64_elf_toc (input_section->output_section->owner);
|
| 1596 |
|
|
|
| 1597 |
|
|
octets = reloc_entry->address * bfd_octets_per_byte (abfd);
|
| 1598 |
|
|
bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
|
| 1599 |
|
|
return bfd_reloc_ok;
|
| 1600 |
|
|
}
|
| 1601 |
|
|
|
| 1602 |
|
|
static bfd_reloc_status_type
|
| 1603 |
|
|
ppc64_elf_unhandled_reloc (abfd, reloc_entry, symbol, data,
|
| 1604 |
|
|
input_section, output_bfd, error_message)
|
| 1605 |
|
|
bfd *abfd;
|
| 1606 |
|
|
arelent *reloc_entry;
|
| 1607 |
|
|
asymbol *symbol;
|
| 1608 |
|
|
PTR data;
|
| 1609 |
|
|
asection *input_section;
|
| 1610 |
|
|
bfd *output_bfd;
|
| 1611 |
|
|
char **error_message;
|
| 1612 |
|
|
{
|
| 1613 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 1614 |
|
|
call the generic function. Any adjustment will be done at final
|
| 1615 |
|
|
link time. */
|
| 1616 |
|
|
if (output_bfd != NULL)
|
| 1617 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 1618 |
|
|
input_section, output_bfd, error_message);
|
| 1619 |
|
|
|
| 1620 |
|
|
if (error_message != NULL)
|
| 1621 |
|
|
{
|
| 1622 |
|
|
static char buf[60];
|
| 1623 |
|
|
sprintf (buf, "generic linker can't handle %s",
|
| 1624 |
|
|
reloc_entry->howto->name);
|
| 1625 |
|
|
*error_message = buf;
|
| 1626 |
|
|
}
|
| 1627 |
|
|
return bfd_reloc_dangerous;
|
| 1628 |
|
|
}
|
| 1629 |
|
|
|
| 1630 |
|
|
/* Fix bad default arch selected for a 64 bit input bfd when the
|
| 1631 |
|
|
default is 32 bit. */
|
| 1632 |
|
|
|
| 1633 |
|
|
static boolean
|
| 1634 |
|
|
ppc64_elf_object_p (abfd)
|
| 1635 |
|
|
bfd *abfd;
|
| 1636 |
|
|
{
|
| 1637 |
|
|
if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
|
| 1638 |
|
|
{
|
| 1639 |
|
|
Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
|
| 1640 |
|
|
|
| 1641 |
|
|
if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
|
| 1642 |
|
|
{
|
| 1643 |
|
|
/* Relies on arch after 32 bit default being 64 bit default. */
|
| 1644 |
|
|
abfd->arch_info = abfd->arch_info->next;
|
| 1645 |
|
|
BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
|
| 1646 |
|
|
}
|
| 1647 |
|
|
}
|
| 1648 |
|
|
return true;
|
| 1649 |
|
|
}
|
| 1650 |
|
|
|
| 1651 |
|
|
/* Merge backend specific data from an object file to the output
|
| 1652 |
|
|
object file when linking. */
|
| 1653 |
|
|
|
| 1654 |
|
|
static boolean
|
| 1655 |
|
|
ppc64_elf_merge_private_bfd_data (ibfd, obfd)
|
| 1656 |
|
|
bfd *ibfd;
|
| 1657 |
|
|
bfd *obfd;
|
| 1658 |
|
|
{
|
| 1659 |
|
|
/* Check if we have the same endianess. */
|
| 1660 |
|
|
if (ibfd->xvec->byteorder != obfd->xvec->byteorder
|
| 1661 |
|
|
&& obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
|
| 1662 |
|
|
{
|
| 1663 |
|
|
const char *msg;
|
| 1664 |
|
|
|
| 1665 |
|
|
if (bfd_big_endian (ibfd))
|
| 1666 |
|
|
msg = _("%s: compiled for a big endian system and target is little endian");
|
| 1667 |
|
|
else
|
| 1668 |
|
|
msg = _("%s: compiled for a little endian system and target is big endian");
|
| 1669 |
|
|
|
| 1670 |
|
|
(*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
|
| 1671 |
|
|
|
| 1672 |
|
|
bfd_set_error (bfd_error_wrong_format);
|
| 1673 |
|
|
return false;
|
| 1674 |
|
|
}
|
| 1675 |
|
|
|
| 1676 |
|
|
return true;
|
| 1677 |
|
|
}
|
| 1678 |
|
|
|
| 1679 |
|
|
/* The following functions are specific to the ELF linker, while
|
| 1680 |
|
|
functions above are used generally. Those named ppc64_elf_* are
|
| 1681 |
|
|
called by the main ELF linker code. They appear in this file more
|
| 1682 |
|
|
or less in the order in which they are called. eg.
|
| 1683 |
|
|
ppc64_elf_check_relocs is called early in the link process,
|
| 1684 |
|
|
ppc64_elf_finish_dynamic_sections is one of the last functions
|
| 1685 |
|
|
called.
|
| 1686 |
|
|
|
| 1687 |
|
|
PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
|
| 1688 |
|
|
functions have both a function code symbol and a function descriptor
|
| 1689 |
|
|
symbol. A call to foo in a relocatable object file looks like:
|
| 1690 |
|
|
|
| 1691 |
|
|
. .text
|
| 1692 |
|
|
. x:
|
| 1693 |
|
|
. bl .foo
|
| 1694 |
|
|
. nop
|
| 1695 |
|
|
|
| 1696 |
|
|
The function definition in another object file might be:
|
| 1697 |
|
|
|
| 1698 |
|
|
. .section .opd
|
| 1699 |
|
|
. foo: .quad .foo
|
| 1700 |
|
|
. .quad .TOC.@tocbase
|
| 1701 |
|
|
. .quad 0
|
| 1702 |
|
|
.
|
| 1703 |
|
|
. .text
|
| 1704 |
|
|
. .foo: blr
|
| 1705 |
|
|
|
| 1706 |
|
|
When the linker resolves the call during a static link, the branch
|
| 1707 |
|
|
unsurprisingly just goes to .foo and the .opd information is unused.
|
| 1708 |
|
|
If the function definition is in a shared library, things are a little
|
| 1709 |
|
|
different: The call goes via a plt call stub, the opd information gets
|
| 1710 |
|
|
copied to the plt, and the linker patches the nop.
|
| 1711 |
|
|
|
| 1712 |
|
|
. x:
|
| 1713 |
|
|
. bl .foo_stub
|
| 1714 |
|
|
. ld 2,40(1)
|
| 1715 |
|
|
.
|
| 1716 |
|
|
.
|
| 1717 |
|
|
. .foo_stub:
|
| 1718 |
|
|
. addis 12,2,Lfoo@toc@ha # in practice, the call stub
|
| 1719 |
|
|
. addi 12,12,Lfoo@toc@l # is slightly optimised, but
|
| 1720 |
|
|
. std 2,40(1) # this is the general idea
|
| 1721 |
|
|
. ld 11,0(12)
|
| 1722 |
|
|
. ld 2,8(12)
|
| 1723 |
|
|
. mtctr 11
|
| 1724 |
|
|
. ld 11,16(12)
|
| 1725 |
|
|
. bctr
|
| 1726 |
|
|
.
|
| 1727 |
|
|
. .section .plt
|
| 1728 |
|
|
. Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
|
| 1729 |
|
|
|
| 1730 |
|
|
The "reloc ()" notation is supposed to indicate that the linker emits
|
| 1731 |
|
|
an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
|
| 1732 |
|
|
copying.
|
| 1733 |
|
|
|
| 1734 |
|
|
What are the difficulties here? Well, firstly, the relocations
|
| 1735 |
|
|
examined by the linker in check_relocs are against the function code
|
| 1736 |
|
|
sym .foo, while the dynamic relocation in the plt is emitted against
|
| 1737 |
|
|
the function descriptor symbol, foo. Somewhere along the line, we need
|
| 1738 |
|
|
to carefully copy dynamic link information from one symbol to the other.
|
| 1739 |
|
|
Secondly, the generic part of the elf linker will make .foo a dynamic
|
| 1740 |
|
|
symbol as is normal for most other backends. We need foo dynamic
|
| 1741 |
|
|
instead, at least for an application final link. However, when
|
| 1742 |
|
|
creating a shared library containing foo, we need to have both symbols
|
| 1743 |
|
|
dynamic so that references to .foo are satisfied during the early
|
| 1744 |
|
|
stages of linking. Otherwise the linker might decide to pull in a
|
| 1745 |
|
|
definition from some other object, eg. a static library. */
|
| 1746 |
|
|
|
| 1747 |
|
|
/* The linker needs to keep track of the number of relocs that it
|
| 1748 |
|
|
decides to copy as dynamic relocs in check_relocs for each symbol.
|
| 1749 |
|
|
This is so that it can later discard them if they are found to be
|
| 1750 |
|
|
unnecessary. We store the information in a field extending the
|
| 1751 |
|
|
regular ELF linker hash table. */
|
| 1752 |
|
|
|
| 1753 |
|
|
struct ppc_dyn_relocs
|
| 1754 |
|
|
{
|
| 1755 |
|
|
struct ppc_dyn_relocs *next;
|
| 1756 |
|
|
|
| 1757 |
|
|
/* The input section of the reloc. */
|
| 1758 |
|
|
asection *sec;
|
| 1759 |
|
|
|
| 1760 |
|
|
/* Total number of relocs copied for the input section. */
|
| 1761 |
|
|
bfd_size_type count;
|
| 1762 |
|
|
|
| 1763 |
|
|
/* Number of pc-relative relocs copied for the input section. */
|
| 1764 |
|
|
bfd_size_type pc_count;
|
| 1765 |
|
|
};
|
| 1766 |
|
|
|
| 1767 |
|
|
/* Of those relocs that might be copied as dynamic relocs, this macro
|
| 1768 |
|
|
selects between relative and absolute types. */
|
| 1769 |
|
|
|
| 1770 |
|
|
#define IS_ABSOLUTE_RELOC(RTYPE) \
|
| 1771 |
|
|
((RTYPE) != R_PPC64_REL32 \
|
| 1772 |
|
|
&& (RTYPE) != R_PPC64_REL64 \
|
| 1773 |
|
|
&& (RTYPE) != R_PPC64_ADDR30)
|
| 1774 |
|
|
|
| 1775 |
|
|
/* Section name for stubs is the associated section name plus this
|
| 1776 |
|
|
string. */
|
| 1777 |
|
|
#define STUB_SUFFIX ".stub"
|
| 1778 |
|
|
|
| 1779 |
|
|
/* Linker stubs.
|
| 1780 |
|
|
ppc_stub_long_branch:
|
| 1781 |
|
|
Used when a 14 bit branch (or even a 24 bit branch) can't reach its
|
| 1782 |
|
|
destination, but a 24 bit branch in a stub section will reach.
|
| 1783 |
|
|
. b dest
|
| 1784 |
|
|
|
| 1785 |
|
|
ppc_stub_plt_branch:
|
| 1786 |
|
|
Similar to the above, but a 24 bit branch in the stub section won't
|
| 1787 |
|
|
reach its destination.
|
| 1788 |
|
|
. addis %r12,%r2,xxx@ha
|
| 1789 |
|
|
. ld %r11,xxx@l(%r12)
|
| 1790 |
|
|
. mtctr %r11
|
| 1791 |
|
|
. bctr
|
| 1792 |
|
|
|
| 1793 |
|
|
ppc_stub_plt_call:
|
| 1794 |
|
|
Used to call a function in a shared library.
|
| 1795 |
|
|
. addis %r12,%r2,xxx@ha
|
| 1796 |
|
|
. std %r2,40(%r1)
|
| 1797 |
|
|
. ld %r11,xxx+0@l(%r12)
|
| 1798 |
|
|
. ld %r2,xxx+8@l(%r12)
|
| 1799 |
|
|
. mtctr %r11
|
| 1800 |
|
|
. ld %r11,xxx+16@l(%r12)
|
| 1801 |
|
|
. bctr
|
| 1802 |
|
|
*/
|
| 1803 |
|
|
|
| 1804 |
|
|
enum ppc_stub_type {
|
| 1805 |
|
|
ppc_stub_none,
|
| 1806 |
|
|
ppc_stub_long_branch,
|
| 1807 |
|
|
ppc_stub_plt_branch,
|
| 1808 |
|
|
ppc_stub_plt_call
|
| 1809 |
|
|
};
|
| 1810 |
|
|
|
| 1811 |
|
|
struct ppc_stub_hash_entry {
|
| 1812 |
|
|
|
| 1813 |
|
|
/* Base hash table entry structure. */
|
| 1814 |
|
|
struct bfd_hash_entry root;
|
| 1815 |
|
|
|
| 1816 |
|
|
/* The stub section. */
|
| 1817 |
|
|
asection *stub_sec;
|
| 1818 |
|
|
|
| 1819 |
|
|
/* Offset within stub_sec of the beginning of this stub. */
|
| 1820 |
|
|
bfd_vma stub_offset;
|
| 1821 |
|
|
|
| 1822 |
|
|
/* Given the symbol's value and its section we can determine its final
|
| 1823 |
|
|
value when building the stubs (so the stub knows where to jump. */
|
| 1824 |
|
|
bfd_vma target_value;
|
| 1825 |
|
|
asection *target_section;
|
| 1826 |
|
|
|
| 1827 |
|
|
enum ppc_stub_type stub_type;
|
| 1828 |
|
|
|
| 1829 |
|
|
/* The symbol table entry, if any, that this was derived from. */
|
| 1830 |
|
|
struct ppc_link_hash_entry *h;
|
| 1831 |
|
|
|
| 1832 |
|
|
/* Where this stub is being called from, or, in the case of combined
|
| 1833 |
|
|
stub sections, the first input section in the group. */
|
| 1834 |
|
|
asection *id_sec;
|
| 1835 |
|
|
};
|
| 1836 |
|
|
|
| 1837 |
|
|
struct ppc_branch_hash_entry {
|
| 1838 |
|
|
|
| 1839 |
|
|
/* Base hash table entry structure. */
|
| 1840 |
|
|
struct bfd_hash_entry root;
|
| 1841 |
|
|
|
| 1842 |
|
|
/* Offset within .branch_lt. */
|
| 1843 |
|
|
unsigned int offset;
|
| 1844 |
|
|
|
| 1845 |
|
|
/* Generation marker. */
|
| 1846 |
|
|
unsigned int iter;
|
| 1847 |
|
|
};
|
| 1848 |
|
|
|
| 1849 |
|
|
struct ppc_link_hash_entry
|
| 1850 |
|
|
{
|
| 1851 |
|
|
struct elf_link_hash_entry elf;
|
| 1852 |
|
|
|
| 1853 |
|
|
/* A pointer to the most recently used stub hash entry against this
|
| 1854 |
|
|
symbol. */
|
| 1855 |
|
|
struct ppc_stub_hash_entry *stub_cache;
|
| 1856 |
|
|
|
| 1857 |
|
|
/* Track dynamic relocs copied for this symbol. */
|
| 1858 |
|
|
struct ppc_dyn_relocs *dyn_relocs;
|
| 1859 |
|
|
|
| 1860 |
|
|
/* Link between function code and descriptor symbols. */
|
| 1861 |
|
|
struct elf_link_hash_entry *oh;
|
| 1862 |
|
|
|
| 1863 |
|
|
/* Flag function code and descriptor symbols. */
|
| 1864 |
|
|
unsigned int is_func:1;
|
| 1865 |
|
|
unsigned int is_func_descriptor:1;
|
| 1866 |
|
|
unsigned int is_entry:1;
|
| 1867 |
|
|
};
|
| 1868 |
|
|
|
| 1869 |
|
|
/* ppc64 ELF linker hash table. */
|
| 1870 |
|
|
|
| 1871 |
|
|
struct ppc_link_hash_table
|
| 1872 |
|
|
{
|
| 1873 |
|
|
struct elf_link_hash_table elf;
|
| 1874 |
|
|
|
| 1875 |
|
|
/* The stub hash table. */
|
| 1876 |
|
|
struct bfd_hash_table stub_hash_table;
|
| 1877 |
|
|
|
| 1878 |
|
|
/* Another hash table for plt_branch stubs. */
|
| 1879 |
|
|
struct bfd_hash_table branch_hash_table;
|
| 1880 |
|
|
|
| 1881 |
|
|
/* Linker stub bfd. */
|
| 1882 |
|
|
bfd *stub_bfd;
|
| 1883 |
|
|
|
| 1884 |
|
|
/* Linker call-backs. */
|
| 1885 |
|
|
asection * (*add_stub_section) PARAMS ((const char *, asection *));
|
| 1886 |
|
|
void (*layout_sections_again) PARAMS ((void));
|
| 1887 |
|
|
|
| 1888 |
|
|
/* Array to keep track of which stub sections have been created, and
|
| 1889 |
|
|
information on stub grouping. */
|
| 1890 |
|
|
struct map_stub {
|
| 1891 |
|
|
/* This is the section to which stubs in the group will be attached. */
|
| 1892 |
|
|
asection *link_sec;
|
| 1893 |
|
|
/* The stub section. */
|
| 1894 |
|
|
asection *stub_sec;
|
| 1895 |
|
|
} *stub_group;
|
| 1896 |
|
|
|
| 1897 |
|
|
/* Assorted information used by ppc64_elf_size_stubs. */
|
| 1898 |
|
|
int top_index;
|
| 1899 |
|
|
asection **input_list;
|
| 1900 |
|
|
|
| 1901 |
|
|
/* Short-cuts to get to dynamic linker sections. */
|
| 1902 |
|
|
asection *sgot;
|
| 1903 |
|
|
asection *srelgot;
|
| 1904 |
|
|
asection *splt;
|
| 1905 |
|
|
asection *srelplt;
|
| 1906 |
|
|
asection *sdynbss;
|
| 1907 |
|
|
asection *srelbss;
|
| 1908 |
|
|
asection *sglink;
|
| 1909 |
|
|
asection *sfpr;
|
| 1910 |
|
|
asection *sbrlt;
|
| 1911 |
|
|
asection *srelbrlt;
|
| 1912 |
|
|
|
| 1913 |
|
|
/* Set on error. */
|
| 1914 |
|
|
unsigned int stub_error;
|
| 1915 |
|
|
|
| 1916 |
|
|
/* Flag set when small branches are detected. Used to
|
| 1917 |
|
|
select suitable defaults for the stub group size. */
|
| 1918 |
|
|
unsigned int has_14bit_branch;
|
| 1919 |
|
|
|
| 1920 |
|
|
/* Set if we detect a reference undefined weak symbol. */
|
| 1921 |
|
|
unsigned int have_undefweak;
|
| 1922 |
|
|
|
| 1923 |
|
|
/* Incremented every time we size stubs. */
|
| 1924 |
|
|
unsigned int stub_iteration;
|
| 1925 |
|
|
|
| 1926 |
|
|
/* Small local sym to section mapping cache. */
|
| 1927 |
|
|
struct sym_sec_cache sym_sec;
|
| 1928 |
|
|
};
|
| 1929 |
|
|
|
| 1930 |
|
|
static struct bfd_hash_entry *stub_hash_newfunc
|
| 1931 |
|
|
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
|
| 1932 |
|
|
static struct bfd_hash_entry *branch_hash_newfunc
|
| 1933 |
|
|
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
|
| 1934 |
|
|
static struct bfd_hash_entry *link_hash_newfunc
|
| 1935 |
|
|
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
|
| 1936 |
|
|
static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
|
| 1937 |
|
|
PARAMS ((bfd *));
|
| 1938 |
|
|
static void ppc64_elf_link_hash_table_free
|
| 1939 |
|
|
PARAMS ((struct bfd_link_hash_table *));
|
| 1940 |
|
|
static char *ppc_stub_name
|
| 1941 |
|
|
PARAMS ((const asection *, const asection *,
|
| 1942 |
|
|
const struct ppc_link_hash_entry *, const Elf_Internal_Rela *));
|
| 1943 |
|
|
static struct ppc_stub_hash_entry *ppc_get_stub_entry
|
| 1944 |
|
|
PARAMS ((const asection *, const asection *, struct elf_link_hash_entry *,
|
| 1945 |
|
|
const Elf_Internal_Rela *, struct ppc_link_hash_table *));
|
| 1946 |
|
|
static struct ppc_stub_hash_entry *ppc_add_stub
|
| 1947 |
|
|
PARAMS ((const char *, asection *, struct ppc_link_hash_table *));
|
| 1948 |
|
|
static boolean create_linkage_sections
|
| 1949 |
|
|
PARAMS ((bfd *, struct bfd_link_info *));
|
| 1950 |
|
|
static boolean create_got_section
|
| 1951 |
|
|
PARAMS ((bfd *, struct bfd_link_info *));
|
| 1952 |
|
|
static boolean ppc64_elf_create_dynamic_sections
|
| 1953 |
|
|
PARAMS ((bfd *, struct bfd_link_info *));
|
| 1954 |
|
|
static void ppc64_elf_copy_indirect_symbol
|
| 1955 |
|
|
PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
|
| 1956 |
|
|
struct elf_link_hash_entry *));
|
| 1957 |
|
|
static boolean ppc64_elf_check_relocs
|
| 1958 |
|
|
PARAMS ((bfd *, struct bfd_link_info *, asection *,
|
| 1959 |
|
|
const Elf_Internal_Rela *));
|
| 1960 |
|
|
static asection * ppc64_elf_gc_mark_hook
|
| 1961 |
|
|
PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
|
| 1962 |
|
|
struct elf_link_hash_entry *, Elf_Internal_Sym *));
|
| 1963 |
|
|
static boolean ppc64_elf_gc_sweep_hook
|
| 1964 |
|
|
PARAMS ((bfd *, struct bfd_link_info *, asection *,
|
| 1965 |
|
|
const Elf_Internal_Rela *));
|
| 1966 |
|
|
static boolean func_desc_adjust
|
| 1967 |
|
|
PARAMS ((struct elf_link_hash_entry *, PTR));
|
| 1968 |
|
|
static boolean ppc64_elf_func_desc_adjust
|
| 1969 |
|
|
PARAMS ((bfd *, struct bfd_link_info *));
|
| 1970 |
|
|
static boolean ppc64_elf_adjust_dynamic_symbol
|
| 1971 |
|
|
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
|
| 1972 |
|
|
static void ppc64_elf_hide_symbol
|
| 1973 |
|
|
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
|
| 1974 |
|
|
static boolean edit_opd
|
| 1975 |
|
|
PARAMS ((bfd *, struct bfd_link_info *));
|
| 1976 |
|
|
static boolean allocate_dynrelocs
|
| 1977 |
|
|
PARAMS ((struct elf_link_hash_entry *, PTR));
|
| 1978 |
|
|
static boolean readonly_dynrelocs
|
| 1979 |
|
|
PARAMS ((struct elf_link_hash_entry *, PTR));
|
| 1980 |
|
|
static enum elf_reloc_type_class ppc64_elf_reloc_type_class
|
| 1981 |
|
|
PARAMS ((const Elf_Internal_Rela *));
|
| 1982 |
|
|
static boolean ppc64_elf_size_dynamic_sections
|
| 1983 |
|
|
PARAMS ((bfd *, struct bfd_link_info *));
|
| 1984 |
|
|
static INLINE enum ppc_stub_type ppc_type_of_stub
|
| 1985 |
|
|
PARAMS ((asection *, const Elf_Internal_Rela *,
|
| 1986 |
|
|
struct ppc_link_hash_entry **, bfd_vma));
|
| 1987 |
|
|
static bfd_byte *build_plt_stub
|
| 1988 |
|
|
PARAMS ((bfd *, bfd_byte *, int, int));
|
| 1989 |
|
|
static boolean ppc_build_one_stub
|
| 1990 |
|
|
PARAMS ((struct bfd_hash_entry *, PTR));
|
| 1991 |
|
|
static boolean ppc_size_one_stub
|
| 1992 |
|
|
PARAMS ((struct bfd_hash_entry *, PTR));
|
| 1993 |
|
|
static void group_sections
|
| 1994 |
|
|
PARAMS ((struct ppc_link_hash_table *, bfd_size_type, boolean));
|
| 1995 |
|
|
static boolean ppc64_elf_relocate_section
|
| 1996 |
|
|
PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
|
| 1997 |
|
|
Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
|
| 1998 |
|
|
asection **));
|
| 1999 |
|
|
static boolean ppc64_elf_finish_dynamic_symbol
|
| 2000 |
|
|
PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
|
| 2001 |
|
|
Elf_Internal_Sym *));
|
| 2002 |
|
|
static boolean ppc64_elf_finish_dynamic_sections
|
| 2003 |
|
|
PARAMS ((bfd *, struct bfd_link_info *));
|
| 2004 |
|
|
|
| 2005 |
|
|
/* Get the ppc64 ELF linker hash table from a link_info structure. */
|
| 2006 |
|
|
|
| 2007 |
|
|
#define ppc_hash_table(p) \
|
| 2008 |
|
|
((struct ppc_link_hash_table *) ((p)->hash))
|
| 2009 |
|
|
|
| 2010 |
|
|
#define ppc_stub_hash_lookup(table, string, create, copy) \
|
| 2011 |
|
|
((struct ppc_stub_hash_entry *) \
|
| 2012 |
|
|
bfd_hash_lookup ((table), (string), (create), (copy)))
|
| 2013 |
|
|
|
| 2014 |
|
|
#define ppc_branch_hash_lookup(table, string, create, copy) \
|
| 2015 |
|
|
((struct ppc_branch_hash_entry *) \
|
| 2016 |
|
|
bfd_hash_lookup ((table), (string), (create), (copy)))
|
| 2017 |
|
|
|
| 2018 |
|
|
/* Create an entry in the stub hash table. */
|
| 2019 |
|
|
|
| 2020 |
|
|
static struct bfd_hash_entry *
|
| 2021 |
|
|
stub_hash_newfunc (entry, table, string)
|
| 2022 |
|
|
struct bfd_hash_entry *entry;
|
| 2023 |
|
|
struct bfd_hash_table *table;
|
| 2024 |
|
|
const char *string;
|
| 2025 |
|
|
{
|
| 2026 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 2027 |
|
|
subclass. */
|
| 2028 |
|
|
if (entry == NULL)
|
| 2029 |
|
|
{
|
| 2030 |
|
|
entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
|
| 2031 |
|
|
if (entry == NULL)
|
| 2032 |
|
|
return entry;
|
| 2033 |
|
|
}
|
| 2034 |
|
|
|
| 2035 |
|
|
/* Call the allocation method of the superclass. */
|
| 2036 |
|
|
entry = bfd_hash_newfunc (entry, table, string);
|
| 2037 |
|
|
if (entry != NULL)
|
| 2038 |
|
|
{
|
| 2039 |
|
|
struct ppc_stub_hash_entry *eh;
|
| 2040 |
|
|
|
| 2041 |
|
|
/* Initialize the local fields. */
|
| 2042 |
|
|
eh = (struct ppc_stub_hash_entry *) entry;
|
| 2043 |
|
|
eh->stub_sec = NULL;
|
| 2044 |
|
|
eh->stub_offset = 0;
|
| 2045 |
|
|
eh->target_value = 0;
|
| 2046 |
|
|
eh->target_section = NULL;
|
| 2047 |
|
|
eh->stub_type = ppc_stub_none;
|
| 2048 |
|
|
eh->h = NULL;
|
| 2049 |
|
|
eh->id_sec = NULL;
|
| 2050 |
|
|
}
|
| 2051 |
|
|
|
| 2052 |
|
|
return entry;
|
| 2053 |
|
|
}
|
| 2054 |
|
|
|
| 2055 |
|
|
/* Create an entry in the branch hash table. */
|
| 2056 |
|
|
|
| 2057 |
|
|
static struct bfd_hash_entry *
|
| 2058 |
|
|
branch_hash_newfunc (entry, table, string)
|
| 2059 |
|
|
struct bfd_hash_entry *entry;
|
| 2060 |
|
|
struct bfd_hash_table *table;
|
| 2061 |
|
|
const char *string;
|
| 2062 |
|
|
{
|
| 2063 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 2064 |
|
|
subclass. */
|
| 2065 |
|
|
if (entry == NULL)
|
| 2066 |
|
|
{
|
| 2067 |
|
|
entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
|
| 2068 |
|
|
if (entry == NULL)
|
| 2069 |
|
|
return entry;
|
| 2070 |
|
|
}
|
| 2071 |
|
|
|
| 2072 |
|
|
/* Call the allocation method of the superclass. */
|
| 2073 |
|
|
entry = bfd_hash_newfunc (entry, table, string);
|
| 2074 |
|
|
if (entry != NULL)
|
| 2075 |
|
|
{
|
| 2076 |
|
|
struct ppc_branch_hash_entry *eh;
|
| 2077 |
|
|
|
| 2078 |
|
|
/* Initialize the local fields. */
|
| 2079 |
|
|
eh = (struct ppc_branch_hash_entry *) entry;
|
| 2080 |
|
|
eh->offset = 0;
|
| 2081 |
|
|
eh->iter = 0;
|
| 2082 |
|
|
}
|
| 2083 |
|
|
|
| 2084 |
|
|
return entry;
|
| 2085 |
|
|
}
|
| 2086 |
|
|
|
| 2087 |
|
|
/* Create an entry in a ppc64 ELF linker hash table. */
|
| 2088 |
|
|
|
| 2089 |
|
|
static struct bfd_hash_entry *
|
| 2090 |
|
|
link_hash_newfunc (entry, table, string)
|
| 2091 |
|
|
struct bfd_hash_entry *entry;
|
| 2092 |
|
|
struct bfd_hash_table *table;
|
| 2093 |
|
|
const char *string;
|
| 2094 |
|
|
{
|
| 2095 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 2096 |
|
|
subclass. */
|
| 2097 |
|
|
if (entry == NULL)
|
| 2098 |
|
|
{
|
| 2099 |
|
|
entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
|
| 2100 |
|
|
if (entry == NULL)
|
| 2101 |
|
|
return entry;
|
| 2102 |
|
|
}
|
| 2103 |
|
|
|
| 2104 |
|
|
/* Call the allocation method of the superclass. */
|
| 2105 |
|
|
entry = _bfd_elf_link_hash_newfunc (entry, table, string);
|
| 2106 |
|
|
if (entry != NULL)
|
| 2107 |
|
|
{
|
| 2108 |
|
|
struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
|
| 2109 |
|
|
|
| 2110 |
|
|
eh->stub_cache = NULL;
|
| 2111 |
|
|
eh->dyn_relocs = NULL;
|
| 2112 |
|
|
eh->oh = NULL;
|
| 2113 |
|
|
eh->is_func = 0;
|
| 2114 |
|
|
eh->is_func_descriptor = 0;
|
| 2115 |
|
|
eh->is_entry = 0;
|
| 2116 |
|
|
}
|
| 2117 |
|
|
|
| 2118 |
|
|
return entry;
|
| 2119 |
|
|
}
|
| 2120 |
|
|
|
| 2121 |
|
|
/* Create a ppc64 ELF linker hash table. */
|
| 2122 |
|
|
|
| 2123 |
|
|
static struct bfd_link_hash_table *
|
| 2124 |
|
|
ppc64_elf_link_hash_table_create (abfd)
|
| 2125 |
|
|
bfd *abfd;
|
| 2126 |
|
|
{
|
| 2127 |
|
|
struct ppc_link_hash_table *htab;
|
| 2128 |
|
|
bfd_size_type amt = sizeof (struct ppc_link_hash_table);
|
| 2129 |
|
|
|
| 2130 |
|
|
htab = (struct ppc_link_hash_table *) bfd_malloc (amt);
|
| 2131 |
|
|
if (htab == NULL)
|
| 2132 |
|
|
return NULL;
|
| 2133 |
|
|
|
| 2134 |
|
|
if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
|
| 2135 |
|
|
{
|
| 2136 |
|
|
free (htab);
|
| 2137 |
|
|
return NULL;
|
| 2138 |
|
|
}
|
| 2139 |
|
|
|
| 2140 |
|
|
/* Init the stub hash table too. */
|
| 2141 |
|
|
if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
|
| 2142 |
|
|
return NULL;
|
| 2143 |
|
|
|
| 2144 |
|
|
/* And the branch hash table. */
|
| 2145 |
|
|
if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
|
| 2146 |
|
|
return NULL;
|
| 2147 |
|
|
|
| 2148 |
|
|
htab->stub_bfd = NULL;
|
| 2149 |
|
|
htab->add_stub_section = NULL;
|
| 2150 |
|
|
htab->layout_sections_again = NULL;
|
| 2151 |
|
|
htab->stub_group = NULL;
|
| 2152 |
|
|
htab->sgot = NULL;
|
| 2153 |
|
|
htab->srelgot = NULL;
|
| 2154 |
|
|
htab->splt = NULL;
|
| 2155 |
|
|
htab->srelplt = NULL;
|
| 2156 |
|
|
htab->sdynbss = NULL;
|
| 2157 |
|
|
htab->srelbss = NULL;
|
| 2158 |
|
|
htab->sglink = NULL;
|
| 2159 |
|
|
htab->sfpr = NULL;
|
| 2160 |
|
|
htab->sbrlt = NULL;
|
| 2161 |
|
|
htab->srelbrlt = NULL;
|
| 2162 |
|
|
htab->stub_error = 0;
|
| 2163 |
|
|
htab->has_14bit_branch = 0;
|
| 2164 |
|
|
htab->have_undefweak = 0;
|
| 2165 |
|
|
htab->stub_iteration = 0;
|
| 2166 |
|
|
htab->sym_sec.abfd = NULL;
|
| 2167 |
|
|
|
| 2168 |
|
|
return &htab->elf.root;
|
| 2169 |
|
|
}
|
| 2170 |
|
|
|
| 2171 |
|
|
/* Free the derived linker hash table. */
|
| 2172 |
|
|
|
| 2173 |
|
|
static void
|
| 2174 |
|
|
ppc64_elf_link_hash_table_free (hash)
|
| 2175 |
|
|
struct bfd_link_hash_table *hash;
|
| 2176 |
|
|
{
|
| 2177 |
|
|
struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
|
| 2178 |
|
|
|
| 2179 |
|
|
bfd_hash_table_free (&ret->stub_hash_table);
|
| 2180 |
|
|
bfd_hash_table_free (&ret->branch_hash_table);
|
| 2181 |
|
|
_bfd_generic_link_hash_table_free (hash);
|
| 2182 |
|
|
}
|
| 2183 |
|
|
|
| 2184 |
|
|
/* Build a name for an entry in the stub hash table. */
|
| 2185 |
|
|
|
| 2186 |
|
|
static char *
|
| 2187 |
|
|
ppc_stub_name (input_section, sym_sec, h, rel)
|
| 2188 |
|
|
const asection *input_section;
|
| 2189 |
|
|
const asection *sym_sec;
|
| 2190 |
|
|
const struct ppc_link_hash_entry *h;
|
| 2191 |
|
|
const Elf_Internal_Rela *rel;
|
| 2192 |
|
|
{
|
| 2193 |
|
|
char *stub_name;
|
| 2194 |
|
|
bfd_size_type len;
|
| 2195 |
|
|
|
| 2196 |
|
|
/* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
|
| 2197 |
|
|
offsets from a sym as a branch target? In fact, we could
|
| 2198 |
|
|
probably assume the addend is always zero. */
|
| 2199 |
|
|
BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
|
| 2200 |
|
|
|
| 2201 |
|
|
if (h)
|
| 2202 |
|
|
{
|
| 2203 |
|
|
len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
|
| 2204 |
|
|
stub_name = bfd_malloc (len);
|
| 2205 |
|
|
if (stub_name != NULL)
|
| 2206 |
|
|
{
|
| 2207 |
|
|
sprintf (stub_name, "%08x_%s+%x",
|
| 2208 |
|
|
input_section->id & 0xffffffff,
|
| 2209 |
|
|
h->elf.root.root.string,
|
| 2210 |
|
|
(int) rel->r_addend & 0xffffffff);
|
| 2211 |
|
|
}
|
| 2212 |
|
|
}
|
| 2213 |
|
|
else
|
| 2214 |
|
|
{
|
| 2215 |
|
|
len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
|
| 2216 |
|
|
stub_name = bfd_malloc (len);
|
| 2217 |
|
|
if (stub_name != NULL)
|
| 2218 |
|
|
{
|
| 2219 |
|
|
sprintf (stub_name, "%08x_%x:%x+%x",
|
| 2220 |
|
|
input_section->id & 0xffffffff,
|
| 2221 |
|
|
sym_sec->id & 0xffffffff,
|
| 2222 |
|
|
(int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
|
| 2223 |
|
|
(int) rel->r_addend & 0xffffffff);
|
| 2224 |
|
|
}
|
| 2225 |
|
|
}
|
| 2226 |
|
|
return stub_name;
|
| 2227 |
|
|
}
|
| 2228 |
|
|
|
| 2229 |
|
|
/* Look up an entry in the stub hash. Stub entries are cached because
|
| 2230 |
|
|
creating the stub name takes a bit of time. */
|
| 2231 |
|
|
|
| 2232 |
|
|
static struct ppc_stub_hash_entry *
|
| 2233 |
|
|
ppc_get_stub_entry (input_section, sym_sec, hash, rel, htab)
|
| 2234 |
|
|
const asection *input_section;
|
| 2235 |
|
|
const asection *sym_sec;
|
| 2236 |
|
|
struct elf_link_hash_entry *hash;
|
| 2237 |
|
|
const Elf_Internal_Rela *rel;
|
| 2238 |
|
|
struct ppc_link_hash_table *htab;
|
| 2239 |
|
|
{
|
| 2240 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 2241 |
|
|
struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
|
| 2242 |
|
|
const asection *id_sec;
|
| 2243 |
|
|
|
| 2244 |
|
|
/* If this input section is part of a group of sections sharing one
|
| 2245 |
|
|
stub section, then use the id of the first section in the group.
|
| 2246 |
|
|
Stub names need to include a section id, as there may well be
|
| 2247 |
|
|
more than one stub used to reach say, printf, and we need to
|
| 2248 |
|
|
distinguish between them. */
|
| 2249 |
|
|
id_sec = htab->stub_group[input_section->id].link_sec;
|
| 2250 |
|
|
|
| 2251 |
|
|
if (h != NULL && h->stub_cache != NULL
|
| 2252 |
|
|
&& h->stub_cache->h == h
|
| 2253 |
|
|
&& h->stub_cache->id_sec == id_sec)
|
| 2254 |
|
|
{
|
| 2255 |
|
|
stub_entry = h->stub_cache;
|
| 2256 |
|
|
}
|
| 2257 |
|
|
else
|
| 2258 |
|
|
{
|
| 2259 |
|
|
char *stub_name;
|
| 2260 |
|
|
|
| 2261 |
|
|
stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
|
| 2262 |
|
|
if (stub_name == NULL)
|
| 2263 |
|
|
return NULL;
|
| 2264 |
|
|
|
| 2265 |
|
|
stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
|
| 2266 |
|
|
stub_name, false, false);
|
| 2267 |
|
|
if (h != NULL)
|
| 2268 |
|
|
h->stub_cache = stub_entry;
|
| 2269 |
|
|
|
| 2270 |
|
|
free (stub_name);
|
| 2271 |
|
|
}
|
| 2272 |
|
|
|
| 2273 |
|
|
return stub_entry;
|
| 2274 |
|
|
}
|
| 2275 |
|
|
|
| 2276 |
|
|
/* Add a new stub entry to the stub hash. Not all fields of the new
|
| 2277 |
|
|
stub entry are initialised. */
|
| 2278 |
|
|
|
| 2279 |
|
|
static struct ppc_stub_hash_entry *
|
| 2280 |
|
|
ppc_add_stub (stub_name, section, htab)
|
| 2281 |
|
|
const char *stub_name;
|
| 2282 |
|
|
asection *section;
|
| 2283 |
|
|
struct ppc_link_hash_table *htab;
|
| 2284 |
|
|
{
|
| 2285 |
|
|
asection *link_sec;
|
| 2286 |
|
|
asection *stub_sec;
|
| 2287 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 2288 |
|
|
|
| 2289 |
|
|
link_sec = htab->stub_group[section->id].link_sec;
|
| 2290 |
|
|
stub_sec = htab->stub_group[section->id].stub_sec;
|
| 2291 |
|
|
if (stub_sec == NULL)
|
| 2292 |
|
|
{
|
| 2293 |
|
|
stub_sec = htab->stub_group[link_sec->id].stub_sec;
|
| 2294 |
|
|
if (stub_sec == NULL)
|
| 2295 |
|
|
{
|
| 2296 |
|
|
size_t namelen;
|
| 2297 |
|
|
bfd_size_type len;
|
| 2298 |
|
|
char *s_name;
|
| 2299 |
|
|
|
| 2300 |
|
|
namelen = strlen (link_sec->name);
|
| 2301 |
|
|
len = namelen + sizeof (STUB_SUFFIX);
|
| 2302 |
|
|
s_name = bfd_alloc (htab->stub_bfd, len);
|
| 2303 |
|
|
if (s_name == NULL)
|
| 2304 |
|
|
return NULL;
|
| 2305 |
|
|
|
| 2306 |
|
|
memcpy (s_name, link_sec->name, namelen);
|
| 2307 |
|
|
memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
|
| 2308 |
|
|
stub_sec = (*htab->add_stub_section) (s_name, link_sec);
|
| 2309 |
|
|
if (stub_sec == NULL)
|
| 2310 |
|
|
return NULL;
|
| 2311 |
|
|
htab->stub_group[link_sec->id].stub_sec = stub_sec;
|
| 2312 |
|
|
}
|
| 2313 |
|
|
htab->stub_group[section->id].stub_sec = stub_sec;
|
| 2314 |
|
|
}
|
| 2315 |
|
|
|
| 2316 |
|
|
/* Enter this entry into the linker stub hash table. */
|
| 2317 |
|
|
stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
|
| 2318 |
|
|
true, false);
|
| 2319 |
|
|
if (stub_entry == NULL)
|
| 2320 |
|
|
{
|
| 2321 |
|
|
(*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
|
| 2322 |
|
|
bfd_archive_filename (section->owner),
|
| 2323 |
|
|
stub_name);
|
| 2324 |
|
|
return NULL;
|
| 2325 |
|
|
}
|
| 2326 |
|
|
|
| 2327 |
|
|
stub_entry->stub_sec = stub_sec;
|
| 2328 |
|
|
stub_entry->stub_offset = 0;
|
| 2329 |
|
|
stub_entry->id_sec = link_sec;
|
| 2330 |
|
|
return stub_entry;
|
| 2331 |
|
|
}
|
| 2332 |
|
|
|
| 2333 |
|
|
/* Create sections for linker generated code. */
|
| 2334 |
|
|
|
| 2335 |
|
|
static boolean
|
| 2336 |
|
|
create_linkage_sections (dynobj, info)
|
| 2337 |
|
|
bfd *dynobj;
|
| 2338 |
|
|
struct bfd_link_info *info;
|
| 2339 |
|
|
{
|
| 2340 |
|
|
struct ppc_link_hash_table *htab;
|
| 2341 |
|
|
flagword flags;
|
| 2342 |
|
|
|
| 2343 |
|
|
htab = ppc_hash_table (info);
|
| 2344 |
|
|
|
| 2345 |
|
|
/* Create .sfpr for code to save and restore fp regs. */
|
| 2346 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
|
| 2347 |
|
|
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 2348 |
|
|
htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
|
| 2349 |
|
|
if (htab->sfpr == NULL
|
| 2350 |
|
|
|| ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
|
| 2351 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
|
| 2352 |
|
|
return false;
|
| 2353 |
|
|
|
| 2354 |
|
|
/* Create .glink for lazy dynamic linking support. */
|
| 2355 |
|
|
htab->sglink = bfd_make_section_anyway (dynobj, ".glink");
|
| 2356 |
|
|
if (htab->sglink == NULL
|
| 2357 |
|
|
|| ! bfd_set_section_flags (dynobj, htab->sglink, flags)
|
| 2358 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->sglink, 2))
|
| 2359 |
|
|
return false;
|
| 2360 |
|
|
|
| 2361 |
|
|
/* Create .branch_lt for plt_branch stubs. */
|
| 2362 |
|
|
flags = (SEC_ALLOC | SEC_LOAD
|
| 2363 |
|
|
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 2364 |
|
|
htab->sbrlt = bfd_make_section_anyway (dynobj, ".branch_lt");
|
| 2365 |
|
|
if (htab->sbrlt == NULL
|
| 2366 |
|
|
|| ! bfd_set_section_flags (dynobj, htab->sbrlt, flags)
|
| 2367 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->sbrlt, 3))
|
| 2368 |
|
|
return false;
|
| 2369 |
|
|
|
| 2370 |
|
|
if (info->shared)
|
| 2371 |
|
|
{
|
| 2372 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
|
| 2373 |
|
|
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 2374 |
|
|
htab->srelbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
|
| 2375 |
|
|
if (!htab->srelbrlt
|
| 2376 |
|
|
|| ! bfd_set_section_flags (dynobj, htab->srelbrlt, flags)
|
| 2377 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->srelbrlt, 3))
|
| 2378 |
|
|
return false;
|
| 2379 |
|
|
}
|
| 2380 |
|
|
return true;
|
| 2381 |
|
|
}
|
| 2382 |
|
|
|
| 2383 |
|
|
/* Create .got and .rela.got sections in DYNOBJ, and set up
|
| 2384 |
|
|
shortcuts to them in our hash table. */
|
| 2385 |
|
|
|
| 2386 |
|
|
static boolean
|
| 2387 |
|
|
create_got_section (dynobj, info)
|
| 2388 |
|
|
bfd *dynobj;
|
| 2389 |
|
|
struct bfd_link_info *info;
|
| 2390 |
|
|
{
|
| 2391 |
|
|
struct ppc_link_hash_table *htab;
|
| 2392 |
|
|
|
| 2393 |
|
|
if (! _bfd_elf_create_got_section (dynobj, info))
|
| 2394 |
|
|
return false;
|
| 2395 |
|
|
|
| 2396 |
|
|
htab = ppc_hash_table (info);
|
| 2397 |
|
|
htab->sgot = bfd_get_section_by_name (dynobj, ".got");
|
| 2398 |
|
|
if (!htab->sgot)
|
| 2399 |
|
|
abort ();
|
| 2400 |
|
|
|
| 2401 |
|
|
htab->srelgot = bfd_make_section (dynobj, ".rela.got");
|
| 2402 |
|
|
if (!htab->srelgot
|
| 2403 |
|
|
|| ! bfd_set_section_flags (dynobj, htab->srelgot,
|
| 2404 |
|
|
(SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
|
| 2405 |
|
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED
|
| 2406 |
|
|
| SEC_READONLY))
|
| 2407 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
|
| 2408 |
|
|
return false;
|
| 2409 |
|
|
return true;
|
| 2410 |
|
|
}
|
| 2411 |
|
|
|
| 2412 |
|
|
/* Create the dynamic sections, and set up shortcuts. */
|
| 2413 |
|
|
|
| 2414 |
|
|
static boolean
|
| 2415 |
|
|
ppc64_elf_create_dynamic_sections (dynobj, info)
|
| 2416 |
|
|
bfd *dynobj;
|
| 2417 |
|
|
struct bfd_link_info *info;
|
| 2418 |
|
|
{
|
| 2419 |
|
|
struct ppc_link_hash_table *htab;
|
| 2420 |
|
|
|
| 2421 |
|
|
htab = ppc_hash_table (info);
|
| 2422 |
|
|
if (!htab->sgot && !create_got_section (dynobj, info))
|
| 2423 |
|
|
return false;
|
| 2424 |
|
|
|
| 2425 |
|
|
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
|
| 2426 |
|
|
return false;
|
| 2427 |
|
|
|
| 2428 |
|
|
htab->splt = bfd_get_section_by_name (dynobj, ".plt");
|
| 2429 |
|
|
htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
|
| 2430 |
|
|
htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
|
| 2431 |
|
|
if (!info->shared)
|
| 2432 |
|
|
htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
|
| 2433 |
|
|
|
| 2434 |
|
|
if (!htab->splt || !htab->srelplt || !htab->sdynbss
|
| 2435 |
|
|
|| (!info->shared && !htab->srelbss))
|
| 2436 |
|
|
abort ();
|
| 2437 |
|
|
|
| 2438 |
|
|
return true;
|
| 2439 |
|
|
}
|
| 2440 |
|
|
|
| 2441 |
|
|
/* Copy the extra info we tack onto an elf_link_hash_entry. */
|
| 2442 |
|
|
|
| 2443 |
|
|
static void
|
| 2444 |
|
|
ppc64_elf_copy_indirect_symbol (bed, dir, ind)
|
| 2445 |
|
|
struct elf_backend_data *bed;
|
| 2446 |
|
|
struct elf_link_hash_entry *dir, *ind;
|
| 2447 |
|
|
{
|
| 2448 |
|
|
struct ppc_link_hash_entry *edir, *eind;
|
| 2449 |
|
|
|
| 2450 |
|
|
edir = (struct ppc_link_hash_entry *) dir;
|
| 2451 |
|
|
eind = (struct ppc_link_hash_entry *) ind;
|
| 2452 |
|
|
|
| 2453 |
|
|
if (eind->dyn_relocs != NULL)
|
| 2454 |
|
|
{
|
| 2455 |
|
|
if (edir->dyn_relocs != NULL)
|
| 2456 |
|
|
{
|
| 2457 |
|
|
struct ppc_dyn_relocs **pp;
|
| 2458 |
|
|
struct ppc_dyn_relocs *p;
|
| 2459 |
|
|
|
| 2460 |
|
|
if (ind->root.type == bfd_link_hash_indirect)
|
| 2461 |
|
|
abort ();
|
| 2462 |
|
|
|
| 2463 |
|
|
/* Add reloc counts against the weak sym to the strong sym
|
| 2464 |
|
|
list. Merge any entries against the same section. */
|
| 2465 |
|
|
for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
|
| 2466 |
|
|
{
|
| 2467 |
|
|
struct ppc_dyn_relocs *q;
|
| 2468 |
|
|
|
| 2469 |
|
|
for (q = edir->dyn_relocs; q != NULL; q = q->next)
|
| 2470 |
|
|
if (q->sec == p->sec)
|
| 2471 |
|
|
{
|
| 2472 |
|
|
q->pc_count += p->pc_count;
|
| 2473 |
|
|
q->count += p->count;
|
| 2474 |
|
|
*pp = p->next;
|
| 2475 |
|
|
break;
|
| 2476 |
|
|
}
|
| 2477 |
|
|
if (q == NULL)
|
| 2478 |
|
|
pp = &p->next;
|
| 2479 |
|
|
}
|
| 2480 |
|
|
*pp = edir->dyn_relocs;
|
| 2481 |
|
|
}
|
| 2482 |
|
|
|
| 2483 |
|
|
edir->dyn_relocs = eind->dyn_relocs;
|
| 2484 |
|
|
eind->dyn_relocs = NULL;
|
| 2485 |
|
|
}
|
| 2486 |
|
|
|
| 2487 |
|
|
edir->is_func |= eind->is_func;
|
| 2488 |
|
|
edir->is_func_descriptor |= eind->is_func_descriptor;
|
| 2489 |
|
|
edir->is_entry |= eind->is_entry;
|
| 2490 |
|
|
|
| 2491 |
|
|
_bfd_elf_link_hash_copy_indirect (bed, dir, ind);
|
| 2492 |
|
|
}
|
| 2493 |
|
|
|
| 2494 |
|
|
/* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
|
| 2495 |
|
|
symbols undefined on the command-line. */
|
| 2496 |
|
|
|
| 2497 |
|
|
boolean
|
| 2498 |
|
|
ppc64_elf_mark_entry_syms (info)
|
| 2499 |
|
|
struct bfd_link_info *info;
|
| 2500 |
|
|
{
|
| 2501 |
|
|
struct ppc_link_hash_table *htab;
|
| 2502 |
|
|
struct bfd_sym_chain *sym;
|
| 2503 |
|
|
|
| 2504 |
|
|
htab = ppc_hash_table (info);
|
| 2505 |
|
|
for (sym = info->gc_sym_list; sym; sym = sym->next)
|
| 2506 |
|
|
{
|
| 2507 |
|
|
struct elf_link_hash_entry *h;
|
| 2508 |
|
|
|
| 2509 |
|
|
h = elf_link_hash_lookup (&htab->elf, sym->name, false, false, false);
|
| 2510 |
|
|
if (h != NULL)
|
| 2511 |
|
|
((struct ppc_link_hash_entry *) h)->is_entry = 1;
|
| 2512 |
|
|
}
|
| 2513 |
|
|
return true;
|
| 2514 |
|
|
}
|
| 2515 |
|
|
|
| 2516 |
|
|
/* Look through the relocs for a section during the first phase, and
|
| 2517 |
|
|
calculate needed space in the global offset table, procedure
|
| 2518 |
|
|
linkage table, and dynamic reloc sections. */
|
| 2519 |
|
|
|
| 2520 |
|
|
static boolean
|
| 2521 |
|
|
ppc64_elf_check_relocs (abfd, info, sec, relocs)
|
| 2522 |
|
|
bfd *abfd;
|
| 2523 |
|
|
struct bfd_link_info *info;
|
| 2524 |
|
|
asection *sec;
|
| 2525 |
|
|
const Elf_Internal_Rela *relocs;
|
| 2526 |
|
|
{
|
| 2527 |
|
|
struct ppc_link_hash_table *htab;
|
| 2528 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 2529 |
|
|
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
| 2530 |
|
|
const Elf_Internal_Rela *rel;
|
| 2531 |
|
|
const Elf_Internal_Rela *rel_end;
|
| 2532 |
|
|
asection *sreloc;
|
| 2533 |
|
|
asection **opd_sym_map;
|
| 2534 |
|
|
|
| 2535 |
|
|
if (info->relocateable)
|
| 2536 |
|
|
return true;
|
| 2537 |
|
|
|
| 2538 |
|
|
htab = ppc_hash_table (info);
|
| 2539 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 2540 |
|
|
|
| 2541 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 2542 |
|
|
sym_hashes_end = (sym_hashes
|
| 2543 |
|
|
+ symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
|
| 2544 |
|
|
- symtab_hdr->sh_info);
|
| 2545 |
|
|
|
| 2546 |
|
|
sreloc = NULL;
|
| 2547 |
|
|
opd_sym_map = NULL;
|
| 2548 |
|
|
if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
|
| 2549 |
|
|
{
|
| 2550 |
|
|
/* Garbage collection needs some extra help with .opd sections.
|
| 2551 |
|
|
We don't want to necessarily keep everything referenced by
|
| 2552 |
|
|
relocs in .opd, as that would keep all functions. Instead,
|
| 2553 |
|
|
if we reference an .opd symbol (a function descriptor), we
|
| 2554 |
|
|
want to keep the function code symbol's section. This is
|
| 2555 |
|
|
easy for global symbols, but for local syms we need to keep
|
| 2556 |
|
|
information about the associated function section. Later, if
|
| 2557 |
|
|
edit_opd deletes entries, we'll use this array to adjust
|
| 2558 |
|
|
local syms in .opd. */
|
| 2559 |
|
|
union opd_info {
|
| 2560 |
|
|
asection *func_section;
|
| 2561 |
|
|
long entry_adjust;
|
| 2562 |
|
|
};
|
| 2563 |
|
|
bfd_size_type amt;
|
| 2564 |
|
|
|
| 2565 |
|
|
amt = sec->_raw_size * sizeof (union opd_info) / 24;
|
| 2566 |
|
|
opd_sym_map = (asection **) bfd_zalloc (abfd, amt);
|
| 2567 |
|
|
if (opd_sym_map == NULL)
|
| 2568 |
|
|
return false;
|
| 2569 |
|
|
elf_section_data (sec)->tdata = opd_sym_map;
|
| 2570 |
|
|
}
|
| 2571 |
|
|
|
| 2572 |
|
|
if (htab->elf.dynobj == NULL)
|
| 2573 |
|
|
htab->elf.dynobj = abfd;
|
| 2574 |
|
|
if (htab->sfpr == NULL
|
| 2575 |
|
|
&& !create_linkage_sections (htab->elf.dynobj, info))
|
| 2576 |
|
|
return false;
|
| 2577 |
|
|
|
| 2578 |
|
|
rel_end = relocs + sec->reloc_count;
|
| 2579 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
| 2580 |
|
|
{
|
| 2581 |
|
|
unsigned long r_symndx;
|
| 2582 |
|
|
struct elf_link_hash_entry *h;
|
| 2583 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 2584 |
|
|
|
| 2585 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 2586 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 2587 |
|
|
h = NULL;
|
| 2588 |
|
|
else
|
| 2589 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 2590 |
|
|
|
| 2591 |
|
|
r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
|
| 2592 |
|
|
switch (r_type)
|
| 2593 |
|
|
{
|
| 2594 |
|
|
/* GOT16 relocations */
|
| 2595 |
|
|
case R_PPC64_GOT16:
|
| 2596 |
|
|
case R_PPC64_GOT16_DS:
|
| 2597 |
|
|
case R_PPC64_GOT16_HA:
|
| 2598 |
|
|
case R_PPC64_GOT16_HI:
|
| 2599 |
|
|
case R_PPC64_GOT16_LO:
|
| 2600 |
|
|
case R_PPC64_GOT16_LO_DS:
|
| 2601 |
|
|
|
| 2602 |
|
|
/* This symbol requires a global offset table entry. */
|
| 2603 |
|
|
if (htab->sgot == NULL
|
| 2604 |
|
|
&& !create_got_section (htab->elf.dynobj, info))
|
| 2605 |
|
|
return false;
|
| 2606 |
|
|
|
| 2607 |
|
|
if (h != NULL)
|
| 2608 |
|
|
{
|
| 2609 |
|
|
h->got.refcount += 1;
|
| 2610 |
|
|
}
|
| 2611 |
|
|
else
|
| 2612 |
|
|
{
|
| 2613 |
|
|
bfd_signed_vma *local_got_refcounts;
|
| 2614 |
|
|
|
| 2615 |
|
|
/* This is a global offset table entry for a local symbol. */
|
| 2616 |
|
|
local_got_refcounts = elf_local_got_refcounts (abfd);
|
| 2617 |
|
|
if (local_got_refcounts == NULL)
|
| 2618 |
|
|
{
|
| 2619 |
|
|
bfd_size_type size;
|
| 2620 |
|
|
|
| 2621 |
|
|
size = symtab_hdr->sh_info;
|
| 2622 |
|
|
size *= sizeof (bfd_signed_vma);
|
| 2623 |
|
|
local_got_refcounts = ((bfd_signed_vma *)
|
| 2624 |
|
|
bfd_zalloc (abfd, size));
|
| 2625 |
|
|
if (local_got_refcounts == NULL)
|
| 2626 |
|
|
return false;
|
| 2627 |
|
|
elf_local_got_refcounts (abfd) = local_got_refcounts;
|
| 2628 |
|
|
}
|
| 2629 |
|
|
local_got_refcounts[r_symndx] += 1;
|
| 2630 |
|
|
}
|
| 2631 |
|
|
break;
|
| 2632 |
|
|
|
| 2633 |
|
|
case R_PPC64_PLT16_HA:
|
| 2634 |
|
|
case R_PPC64_PLT16_HI:
|
| 2635 |
|
|
case R_PPC64_PLT16_LO:
|
| 2636 |
|
|
case R_PPC64_PLT32:
|
| 2637 |
|
|
case R_PPC64_PLT64:
|
| 2638 |
|
|
/* This symbol requires a procedure linkage table entry. We
|
| 2639 |
|
|
actually build the entry in adjust_dynamic_symbol,
|
| 2640 |
|
|
because this might be a case of linking PIC code without
|
| 2641 |
|
|
linking in any dynamic objects, in which case we don't
|
| 2642 |
|
|
need to generate a procedure linkage table after all. */
|
| 2643 |
|
|
if (h == NULL)
|
| 2644 |
|
|
{
|
| 2645 |
|
|
/* It does not make sense to have a procedure linkage
|
| 2646 |
|
|
table entry for a local symbol. */
|
| 2647 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 2648 |
|
|
return false;
|
| 2649 |
|
|
}
|
| 2650 |
|
|
|
| 2651 |
|
|
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
| 2652 |
|
|
h->plt.refcount += 1;
|
| 2653 |
|
|
((struct ppc_link_hash_entry *) h)->is_func = 1;
|
| 2654 |
|
|
break;
|
| 2655 |
|
|
|
| 2656 |
|
|
/* The following relocations don't need to propagate the
|
| 2657 |
|
|
relocation if linking a shared object since they are
|
| 2658 |
|
|
section relative. */
|
| 2659 |
|
|
case R_PPC64_SECTOFF:
|
| 2660 |
|
|
case R_PPC64_SECTOFF_LO:
|
| 2661 |
|
|
case R_PPC64_SECTOFF_HI:
|
| 2662 |
|
|
case R_PPC64_SECTOFF_HA:
|
| 2663 |
|
|
case R_PPC64_SECTOFF_DS:
|
| 2664 |
|
|
case R_PPC64_SECTOFF_LO_DS:
|
| 2665 |
|
|
case R_PPC64_TOC16:
|
| 2666 |
|
|
case R_PPC64_TOC16_LO:
|
| 2667 |
|
|
case R_PPC64_TOC16_HI:
|
| 2668 |
|
|
case R_PPC64_TOC16_HA:
|
| 2669 |
|
|
case R_PPC64_TOC16_DS:
|
| 2670 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 2671 |
|
|
break;
|
| 2672 |
|
|
|
| 2673 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
| 2674 |
|
|
Reconstruct it for later use during GC. */
|
| 2675 |
|
|
case R_PPC64_GNU_VTINHERIT:
|
| 2676 |
|
|
if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
| 2677 |
|
|
return false;
|
| 2678 |
|
|
break;
|
| 2679 |
|
|
|
| 2680 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
| 2681 |
|
|
used. Record for later use during GC. */
|
| 2682 |
|
|
case R_PPC64_GNU_VTENTRY:
|
| 2683 |
|
|
if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
| 2684 |
|
|
return false;
|
| 2685 |
|
|
break;
|
| 2686 |
|
|
|
| 2687 |
|
|
case R_PPC64_REL14:
|
| 2688 |
|
|
case R_PPC64_REL14_BRTAKEN:
|
| 2689 |
|
|
case R_PPC64_REL14_BRNTAKEN:
|
| 2690 |
|
|
htab->has_14bit_branch = 1;
|
| 2691 |
|
|
/* Fall through. */
|
| 2692 |
|
|
|
| 2693 |
|
|
case R_PPC64_REL24:
|
| 2694 |
|
|
if (h != NULL
|
| 2695 |
|
|
&& h->root.root.string[0] == '.'
|
| 2696 |
|
|
&& h->root.root.string[1] != 0)
|
| 2697 |
|
|
{
|
| 2698 |
|
|
/* We may need a .plt entry if the function this reloc
|
| 2699 |
|
|
refers to is in a shared lib. */
|
| 2700 |
|
|
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
| 2701 |
|
|
h->plt.refcount += 1;
|
| 2702 |
|
|
((struct ppc_link_hash_entry *) h)->is_func = 1;
|
| 2703 |
|
|
}
|
| 2704 |
|
|
break;
|
| 2705 |
|
|
|
| 2706 |
|
|
case R_PPC64_ADDR64:
|
| 2707 |
|
|
if (opd_sym_map != NULL
|
| 2708 |
|
|
&& h != NULL
|
| 2709 |
|
|
&& h->root.root.string[0] == '.'
|
| 2710 |
|
|
&& h->root.root.string[1] != 0)
|
| 2711 |
|
|
{
|
| 2712 |
|
|
struct elf_link_hash_entry *fdh;
|
| 2713 |
|
|
|
| 2714 |
|
|
fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
|
| 2715 |
|
|
false, false, false);
|
| 2716 |
|
|
if (fdh != NULL)
|
| 2717 |
|
|
{
|
| 2718 |
|
|
((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
|
| 2719 |
|
|
((struct ppc_link_hash_entry *) fdh)->oh = h;
|
| 2720 |
|
|
((struct ppc_link_hash_entry *) h)->is_func = 1;
|
| 2721 |
|
|
((struct ppc_link_hash_entry *) h)->oh = fdh;
|
| 2722 |
|
|
}
|
| 2723 |
|
|
}
|
| 2724 |
|
|
if (opd_sym_map != NULL
|
| 2725 |
|
|
&& h == NULL
|
| 2726 |
|
|
&& rel + 1 < rel_end
|
| 2727 |
|
|
&& ((enum elf_ppc_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info)
|
| 2728 |
|
|
== R_PPC64_TOC))
|
| 2729 |
|
|
{
|
| 2730 |
|
|
asection *s;
|
| 2731 |
|
|
|
| 2732 |
|
|
s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
|
| 2733 |
|
|
r_symndx);
|
| 2734 |
|
|
if (s == NULL)
|
| 2735 |
|
|
return false;
|
| 2736 |
|
|
else if (s != sec)
|
| 2737 |
|
|
opd_sym_map[rel->r_offset / 24] = s;
|
| 2738 |
|
|
}
|
| 2739 |
|
|
/* Fall through. */
|
| 2740 |
|
|
|
| 2741 |
|
|
case R_PPC64_REL64:
|
| 2742 |
|
|
case R_PPC64_REL32:
|
| 2743 |
|
|
case R_PPC64_ADDR14:
|
| 2744 |
|
|
case R_PPC64_ADDR14_BRNTAKEN:
|
| 2745 |
|
|
case R_PPC64_ADDR14_BRTAKEN:
|
| 2746 |
|
|
case R_PPC64_ADDR16:
|
| 2747 |
|
|
case R_PPC64_ADDR16_DS:
|
| 2748 |
|
|
case R_PPC64_ADDR16_HA:
|
| 2749 |
|
|
case R_PPC64_ADDR16_HI:
|
| 2750 |
|
|
case R_PPC64_ADDR16_HIGHER:
|
| 2751 |
|
|
case R_PPC64_ADDR16_HIGHERA:
|
| 2752 |
|
|
case R_PPC64_ADDR16_HIGHEST:
|
| 2753 |
|
|
case R_PPC64_ADDR16_HIGHESTA:
|
| 2754 |
|
|
case R_PPC64_ADDR16_LO:
|
| 2755 |
|
|
case R_PPC64_ADDR16_LO_DS:
|
| 2756 |
|
|
case R_PPC64_ADDR24:
|
| 2757 |
|
|
case R_PPC64_ADDR30:
|
| 2758 |
|
|
case R_PPC64_ADDR32:
|
| 2759 |
|
|
case R_PPC64_UADDR16:
|
| 2760 |
|
|
case R_PPC64_UADDR32:
|
| 2761 |
|
|
case R_PPC64_UADDR64:
|
| 2762 |
|
|
case R_PPC64_TOC:
|
| 2763 |
|
|
/* Don't propagate .opd relocs. */
|
| 2764 |
|
|
if (NO_OPD_RELOCS && opd_sym_map != NULL)
|
| 2765 |
|
|
break;
|
| 2766 |
|
|
|
| 2767 |
|
|
/* If we are creating a shared library, and this is a reloc
|
| 2768 |
|
|
against a global symbol, or a non PC relative reloc
|
| 2769 |
|
|
against a local symbol, then we need to copy the reloc
|
| 2770 |
|
|
into the shared library. However, if we are linking with
|
| 2771 |
|
|
-Bsymbolic, we do not need to copy a reloc against a
|
| 2772 |
|
|
global symbol which is defined in an object we are
|
| 2773 |
|
|
including in the link (i.e., DEF_REGULAR is set). At
|
| 2774 |
|
|
this point we have not seen all the input files, so it is
|
| 2775 |
|
|
possible that DEF_REGULAR is not set now but will be set
|
| 2776 |
|
|
later (it is never cleared). In case of a weak definition,
|
| 2777 |
|
|
DEF_REGULAR may be cleared later by a strong definition in
|
| 2778 |
|
|
a shared library. We account for that possibility below by
|
| 2779 |
|
|
storing information in the relocs_copied field of the hash
|
| 2780 |
|
|
table entry. A similar situation occurs when creating
|
| 2781 |
|
|
shared libraries and symbol visibility changes render the
|
| 2782 |
|
|
symbol local.
|
| 2783 |
|
|
|
| 2784 |
|
|
If on the other hand, we are creating an executable, we
|
| 2785 |
|
|
may need to keep relocations for symbols satisfied by a
|
| 2786 |
|
|
dynamic library if we manage to avoid copy relocs for the
|
| 2787 |
|
|
symbol. */
|
| 2788 |
|
|
if ((info->shared
|
| 2789 |
|
|
&& (sec->flags & SEC_ALLOC) != 0
|
| 2790 |
|
|
&& (IS_ABSOLUTE_RELOC (r_type)
|
| 2791 |
|
|
|| (h != NULL
|
| 2792 |
|
|
&& (! info->symbolic
|
| 2793 |
|
|
|| h->root.type == bfd_link_hash_defweak
|
| 2794 |
|
|
|| (h->elf_link_hash_flags
|
| 2795 |
|
|
& ELF_LINK_HASH_DEF_REGULAR) == 0))))
|
| 2796 |
|
|
|| (!info->shared
|
| 2797 |
|
|
&& (sec->flags & SEC_ALLOC) != 0
|
| 2798 |
|
|
&& h != NULL
|
| 2799 |
|
|
&& (h->root.type == bfd_link_hash_defweak
|
| 2800 |
|
|
|| (h->elf_link_hash_flags
|
| 2801 |
|
|
& ELF_LINK_HASH_DEF_REGULAR) == 0)))
|
| 2802 |
|
|
{
|
| 2803 |
|
|
struct ppc_dyn_relocs *p;
|
| 2804 |
|
|
struct ppc_dyn_relocs **head;
|
| 2805 |
|
|
|
| 2806 |
|
|
/* We must copy these reloc types into the output file.
|
| 2807 |
|
|
Create a reloc section in dynobj and make room for
|
| 2808 |
|
|
this reloc. */
|
| 2809 |
|
|
if (sreloc == NULL)
|
| 2810 |
|
|
{
|
| 2811 |
|
|
const char *name;
|
| 2812 |
|
|
bfd *dynobj;
|
| 2813 |
|
|
|
| 2814 |
|
|
name = (bfd_elf_string_from_elf_section
|
| 2815 |
|
|
(abfd,
|
| 2816 |
|
|
elf_elfheader (abfd)->e_shstrndx,
|
| 2817 |
|
|
elf_section_data (sec)->rel_hdr.sh_name));
|
| 2818 |
|
|
if (name == NULL)
|
| 2819 |
|
|
return false;
|
| 2820 |
|
|
|
| 2821 |
|
|
if (strncmp (name, ".rela", 5) != 0
|
| 2822 |
|
|
|| strcmp (bfd_get_section_name (abfd, sec),
|
| 2823 |
|
|
name + 5) != 0)
|
| 2824 |
|
|
{
|
| 2825 |
|
|
(*_bfd_error_handler)
|
| 2826 |
|
|
(_("%s: bad relocation section name `%s\'"),
|
| 2827 |
|
|
bfd_archive_filename (abfd), name);
|
| 2828 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 2829 |
|
|
}
|
| 2830 |
|
|
|
| 2831 |
|
|
dynobj = htab->elf.dynobj;
|
| 2832 |
|
|
sreloc = bfd_get_section_by_name (dynobj, name);
|
| 2833 |
|
|
if (sreloc == NULL)
|
| 2834 |
|
|
{
|
| 2835 |
|
|
flagword flags;
|
| 2836 |
|
|
|
| 2837 |
|
|
sreloc = bfd_make_section (dynobj, name);
|
| 2838 |
|
|
flags = (SEC_HAS_CONTENTS | SEC_READONLY
|
| 2839 |
|
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 2840 |
|
|
if ((sec->flags & SEC_ALLOC) != 0)
|
| 2841 |
|
|
flags |= SEC_ALLOC | SEC_LOAD;
|
| 2842 |
|
|
if (sreloc == NULL
|
| 2843 |
|
|
|| ! bfd_set_section_flags (dynobj, sreloc, flags)
|
| 2844 |
|
|
|| ! bfd_set_section_alignment (dynobj, sreloc, 3))
|
| 2845 |
|
|
return false;
|
| 2846 |
|
|
}
|
| 2847 |
|
|
elf_section_data (sec)->sreloc = sreloc;
|
| 2848 |
|
|
}
|
| 2849 |
|
|
|
| 2850 |
|
|
/* If this is a global symbol, we count the number of
|
| 2851 |
|
|
relocations we need for this symbol. */
|
| 2852 |
|
|
if (h != NULL)
|
| 2853 |
|
|
{
|
| 2854 |
|
|
head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
|
| 2855 |
|
|
}
|
| 2856 |
|
|
else
|
| 2857 |
|
|
{
|
| 2858 |
|
|
/* Track dynamic relocs needed for local syms too.
|
| 2859 |
|
|
We really need local syms available to do this
|
| 2860 |
|
|
easily. Oh well. */
|
| 2861 |
|
|
|
| 2862 |
|
|
asection *s;
|
| 2863 |
|
|
s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
|
| 2864 |
|
|
sec, r_symndx);
|
| 2865 |
|
|
if (s == NULL)
|
| 2866 |
|
|
return false;
|
| 2867 |
|
|
|
| 2868 |
|
|
head = ((struct ppc_dyn_relocs **)
|
| 2869 |
|
|
&elf_section_data (s)->local_dynrel);
|
| 2870 |
|
|
}
|
| 2871 |
|
|
|
| 2872 |
|
|
p = *head;
|
| 2873 |
|
|
if (p == NULL || p->sec != sec)
|
| 2874 |
|
|
{
|
| 2875 |
|
|
p = ((struct ppc_dyn_relocs *)
|
| 2876 |
|
|
bfd_alloc (htab->elf.dynobj,
|
| 2877 |
|
|
(bfd_size_type) sizeof *p));
|
| 2878 |
|
|
if (p == NULL)
|
| 2879 |
|
|
return false;
|
| 2880 |
|
|
p->next = *head;
|
| 2881 |
|
|
*head = p;
|
| 2882 |
|
|
p->sec = sec;
|
| 2883 |
|
|
p->count = 0;
|
| 2884 |
|
|
p->pc_count = 0;
|
| 2885 |
|
|
}
|
| 2886 |
|
|
|
| 2887 |
|
|
p->count += 1;
|
| 2888 |
|
|
if (!IS_ABSOLUTE_RELOC (r_type))
|
| 2889 |
|
|
p->pc_count += 1;
|
| 2890 |
|
|
}
|
| 2891 |
|
|
break;
|
| 2892 |
|
|
|
| 2893 |
|
|
default:
|
| 2894 |
|
|
break;
|
| 2895 |
|
|
}
|
| 2896 |
|
|
}
|
| 2897 |
|
|
|
| 2898 |
|
|
return true;
|
| 2899 |
|
|
}
|
| 2900 |
|
|
|
| 2901 |
|
|
/* Return the section that should be marked against GC for a given
|
| 2902 |
|
|
relocation. */
|
| 2903 |
|
|
|
| 2904 |
|
|
static asection *
|
| 2905 |
|
|
ppc64_elf_gc_mark_hook (sec, info, rel, h, sym)
|
| 2906 |
|
|
asection *sec;
|
| 2907 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
| 2908 |
|
|
Elf_Internal_Rela *rel;
|
| 2909 |
|
|
struct elf_link_hash_entry *h;
|
| 2910 |
|
|
Elf_Internal_Sym *sym;
|
| 2911 |
|
|
{
|
| 2912 |
|
|
asection *rsec = NULL;
|
| 2913 |
|
|
|
| 2914 |
|
|
if (h != NULL)
|
| 2915 |
|
|
{
|
| 2916 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 2917 |
|
|
struct ppc_link_hash_entry *fdh;
|
| 2918 |
|
|
|
| 2919 |
|
|
r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
|
| 2920 |
|
|
switch (r_type)
|
| 2921 |
|
|
{
|
| 2922 |
|
|
case R_PPC64_GNU_VTINHERIT:
|
| 2923 |
|
|
case R_PPC64_GNU_VTENTRY:
|
| 2924 |
|
|
break;
|
| 2925 |
|
|
|
| 2926 |
|
|
default:
|
| 2927 |
|
|
switch (h->root.type)
|
| 2928 |
|
|
{
|
| 2929 |
|
|
case bfd_link_hash_defined:
|
| 2930 |
|
|
case bfd_link_hash_defweak:
|
| 2931 |
|
|
fdh = (struct ppc_link_hash_entry *) h;
|
| 2932 |
|
|
|
| 2933 |
|
|
/* Function descriptor syms cause the associated
|
| 2934 |
|
|
function code sym section to be marked. */
|
| 2935 |
|
|
if (fdh->is_func_descriptor)
|
| 2936 |
|
|
rsec = fdh->oh->root.u.def.section;
|
| 2937 |
|
|
|
| 2938 |
|
|
/* Function entry syms return NULL if they are in .opd
|
| 2939 |
|
|
and are not ._start (or others undefined on the ld
|
| 2940 |
|
|
command line). Thus we avoid marking all function
|
| 2941 |
|
|
sections, as all functions are referenced in .opd. */
|
| 2942 |
|
|
else if ((fdh->oh != NULL
|
| 2943 |
|
|
&& ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
|
| 2944 |
|
|
|| elf_section_data (sec)->tdata == NULL)
|
| 2945 |
|
|
rsec = h->root.u.def.section;
|
| 2946 |
|
|
break;
|
| 2947 |
|
|
|
| 2948 |
|
|
case bfd_link_hash_common:
|
| 2949 |
|
|
rsec = h->root.u.c.p->section;
|
| 2950 |
|
|
break;
|
| 2951 |
|
|
|
| 2952 |
|
|
default:
|
| 2953 |
|
|
break;
|
| 2954 |
|
|
}
|
| 2955 |
|
|
}
|
| 2956 |
|
|
}
|
| 2957 |
|
|
else
|
| 2958 |
|
|
{
|
| 2959 |
|
|
asection **opd_sym_section;
|
| 2960 |
|
|
|
| 2961 |
|
|
rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
| 2962 |
|
|
opd_sym_section = (asection **) elf_section_data (rsec)->tdata;
|
| 2963 |
|
|
if (opd_sym_section != NULL)
|
| 2964 |
|
|
rsec = opd_sym_section[sym->st_value / 24];
|
| 2965 |
|
|
else if (elf_section_data (sec)->tdata != NULL)
|
| 2966 |
|
|
rsec = NULL;
|
| 2967 |
|
|
}
|
| 2968 |
|
|
|
| 2969 |
|
|
return rsec;
|
| 2970 |
|
|
}
|
| 2971 |
|
|
|
| 2972 |
|
|
/* Update the .got, .plt. and dynamic reloc reference counts for the
|
| 2973 |
|
|
section being removed. */
|
| 2974 |
|
|
|
| 2975 |
|
|
static boolean
|
| 2976 |
|
|
ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
|
| 2977 |
|
|
bfd *abfd;
|
| 2978 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
| 2979 |
|
|
asection *sec;
|
| 2980 |
|
|
const Elf_Internal_Rela *relocs;
|
| 2981 |
|
|
{
|
| 2982 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 2983 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 2984 |
|
|
bfd_signed_vma *local_got_refcounts;
|
| 2985 |
|
|
const Elf_Internal_Rela *rel, *relend;
|
| 2986 |
|
|
|
| 2987 |
|
|
elf_section_data (sec)->local_dynrel = NULL;
|
| 2988 |
|
|
|
| 2989 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 2990 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 2991 |
|
|
local_got_refcounts = elf_local_got_refcounts (abfd);
|
| 2992 |
|
|
|
| 2993 |
|
|
relend = relocs + sec->reloc_count;
|
| 2994 |
|
|
for (rel = relocs; rel < relend; rel++)
|
| 2995 |
|
|
{
|
| 2996 |
|
|
unsigned long r_symndx;
|
| 2997 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 2998 |
|
|
struct elf_link_hash_entry *h;
|
| 2999 |
|
|
|
| 3000 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 3001 |
|
|
r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
|
| 3002 |
|
|
switch (r_type)
|
| 3003 |
|
|
{
|
| 3004 |
|
|
case R_PPC64_GOT16:
|
| 3005 |
|
|
case R_PPC64_GOT16_DS:
|
| 3006 |
|
|
case R_PPC64_GOT16_HA:
|
| 3007 |
|
|
case R_PPC64_GOT16_HI:
|
| 3008 |
|
|
case R_PPC64_GOT16_LO:
|
| 3009 |
|
|
case R_PPC64_GOT16_LO_DS:
|
| 3010 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 3011 |
|
|
{
|
| 3012 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 3013 |
|
|
if (h->got.refcount > 0)
|
| 3014 |
|
|
h->got.refcount--;
|
| 3015 |
|
|
}
|
| 3016 |
|
|
else
|
| 3017 |
|
|
{
|
| 3018 |
|
|
if (local_got_refcounts[r_symndx] > 0)
|
| 3019 |
|
|
local_got_refcounts[r_symndx]--;
|
| 3020 |
|
|
}
|
| 3021 |
|
|
break;
|
| 3022 |
|
|
|
| 3023 |
|
|
case R_PPC64_PLT16_HA:
|
| 3024 |
|
|
case R_PPC64_PLT16_HI:
|
| 3025 |
|
|
case R_PPC64_PLT16_LO:
|
| 3026 |
|
|
case R_PPC64_PLT32:
|
| 3027 |
|
|
case R_PPC64_PLT64:
|
| 3028 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 3029 |
|
|
{
|
| 3030 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 3031 |
|
|
if (h->plt.refcount > 0)
|
| 3032 |
|
|
h->plt.refcount--;
|
| 3033 |
|
|
}
|
| 3034 |
|
|
break;
|
| 3035 |
|
|
|
| 3036 |
|
|
case R_PPC64_REL14:
|
| 3037 |
|
|
case R_PPC64_REL14_BRNTAKEN:
|
| 3038 |
|
|
case R_PPC64_REL14_BRTAKEN:
|
| 3039 |
|
|
case R_PPC64_REL24:
|
| 3040 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 3041 |
|
|
{
|
| 3042 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 3043 |
|
|
if (h->plt.refcount > 0)
|
| 3044 |
|
|
h->plt.refcount--;
|
| 3045 |
|
|
}
|
| 3046 |
|
|
break;
|
| 3047 |
|
|
|
| 3048 |
|
|
case R_PPC64_REL32:
|
| 3049 |
|
|
case R_PPC64_REL64:
|
| 3050 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 3051 |
|
|
{
|
| 3052 |
|
|
struct ppc_link_hash_entry *eh;
|
| 3053 |
|
|
struct ppc_dyn_relocs **pp;
|
| 3054 |
|
|
struct ppc_dyn_relocs *p;
|
| 3055 |
|
|
|
| 3056 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 3057 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 3058 |
|
|
|
| 3059 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
|
| 3060 |
|
|
if (p->sec == sec)
|
| 3061 |
|
|
{
|
| 3062 |
|
|
p->pc_count -= 1;
|
| 3063 |
|
|
p->count -= 1;
|
| 3064 |
|
|
if (p->count == 0)
|
| 3065 |
|
|
*pp = p->next;
|
| 3066 |
|
|
break;
|
| 3067 |
|
|
}
|
| 3068 |
|
|
}
|
| 3069 |
|
|
break;
|
| 3070 |
|
|
|
| 3071 |
|
|
case R_PPC64_ADDR14:
|
| 3072 |
|
|
case R_PPC64_ADDR14_BRNTAKEN:
|
| 3073 |
|
|
case R_PPC64_ADDR14_BRTAKEN:
|
| 3074 |
|
|
case R_PPC64_ADDR16:
|
| 3075 |
|
|
case R_PPC64_ADDR16_DS:
|
| 3076 |
|
|
case R_PPC64_ADDR16_HA:
|
| 3077 |
|
|
case R_PPC64_ADDR16_HI:
|
| 3078 |
|
|
case R_PPC64_ADDR16_HIGHER:
|
| 3079 |
|
|
case R_PPC64_ADDR16_HIGHERA:
|
| 3080 |
|
|
case R_PPC64_ADDR16_HIGHEST:
|
| 3081 |
|
|
case R_PPC64_ADDR16_HIGHESTA:
|
| 3082 |
|
|
case R_PPC64_ADDR16_LO:
|
| 3083 |
|
|
case R_PPC64_ADDR16_LO_DS:
|
| 3084 |
|
|
case R_PPC64_ADDR24:
|
| 3085 |
|
|
case R_PPC64_ADDR30:
|
| 3086 |
|
|
case R_PPC64_ADDR32:
|
| 3087 |
|
|
case R_PPC64_ADDR64:
|
| 3088 |
|
|
case R_PPC64_UADDR16:
|
| 3089 |
|
|
case R_PPC64_UADDR32:
|
| 3090 |
|
|
case R_PPC64_UADDR64:
|
| 3091 |
|
|
case R_PPC64_TOC:
|
| 3092 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 3093 |
|
|
{
|
| 3094 |
|
|
struct ppc_link_hash_entry *eh;
|
| 3095 |
|
|
struct ppc_dyn_relocs **pp;
|
| 3096 |
|
|
struct ppc_dyn_relocs *p;
|
| 3097 |
|
|
|
| 3098 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 3099 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 3100 |
|
|
|
| 3101 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
|
| 3102 |
|
|
if (p->sec == sec)
|
| 3103 |
|
|
{
|
| 3104 |
|
|
p->count -= 1;
|
| 3105 |
|
|
if (p->count == 0)
|
| 3106 |
|
|
*pp = p->next;
|
| 3107 |
|
|
break;
|
| 3108 |
|
|
}
|
| 3109 |
|
|
}
|
| 3110 |
|
|
break;
|
| 3111 |
|
|
|
| 3112 |
|
|
default:
|
| 3113 |
|
|
break;
|
| 3114 |
|
|
}
|
| 3115 |
|
|
}
|
| 3116 |
|
|
return true;
|
| 3117 |
|
|
}
|
| 3118 |
|
|
|
| 3119 |
|
|
/* Called via elf_link_hash_traverse to transfer dynamic linking
|
| 3120 |
|
|
information on function code symbol entries to their corresponding
|
| 3121 |
|
|
function descriptor symbol entries. */
|
| 3122 |
|
|
static boolean
|
| 3123 |
|
|
func_desc_adjust (h, inf)
|
| 3124 |
|
|
struct elf_link_hash_entry *h;
|
| 3125 |
|
|
PTR inf;
|
| 3126 |
|
|
{
|
| 3127 |
|
|
struct bfd_link_info *info;
|
| 3128 |
|
|
struct ppc_link_hash_table *htab;
|
| 3129 |
|
|
|
| 3130 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 3131 |
|
|
return true;
|
| 3132 |
|
|
|
| 3133 |
|
|
if (h->root.type == bfd_link_hash_warning)
|
| 3134 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 3135 |
|
|
|
| 3136 |
|
|
info = (struct bfd_link_info *) inf;
|
| 3137 |
|
|
htab = ppc_hash_table (info);
|
| 3138 |
|
|
|
| 3139 |
|
|
/* If this is a function code symbol, transfer dynamic linking
|
| 3140 |
|
|
information to the function descriptor symbol. */
|
| 3141 |
|
|
if (!((struct ppc_link_hash_entry *) h)->is_func)
|
| 3142 |
|
|
return true;
|
| 3143 |
|
|
|
| 3144 |
|
|
if (h->root.type == bfd_link_hash_undefweak
|
| 3145 |
|
|
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
|
| 3146 |
|
|
htab->have_undefweak = true;
|
| 3147 |
|
|
|
| 3148 |
|
|
if (h->plt.refcount > 0
|
| 3149 |
|
|
&& h->root.root.string[0] == '.'
|
| 3150 |
|
|
&& h->root.root.string[1] != '\0')
|
| 3151 |
|
|
{
|
| 3152 |
|
|
struct elf_link_hash_entry *fdh = ((struct ppc_link_hash_entry *) h)->oh;
|
| 3153 |
|
|
boolean force_local;
|
| 3154 |
|
|
|
| 3155 |
|
|
/* Find the corresponding function descriptor symbol. Create it
|
| 3156 |
|
|
as undefined if necessary. */
|
| 3157 |
|
|
|
| 3158 |
|
|
if (fdh == NULL)
|
| 3159 |
|
|
fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
|
| 3160 |
|
|
false, false, true);
|
| 3161 |
|
|
|
| 3162 |
|
|
if (fdh == NULL
|
| 3163 |
|
|
&& info->shared
|
| 3164 |
|
|
&& (h->root.type == bfd_link_hash_undefined
|
| 3165 |
|
|
|| h->root.type == bfd_link_hash_undefweak))
|
| 3166 |
|
|
{
|
| 3167 |
|
|
bfd *abfd;
|
| 3168 |
|
|
asymbol *newsym;
|
| 3169 |
|
|
|
| 3170 |
|
|
abfd = h->root.u.undef.abfd;
|
| 3171 |
|
|
newsym = bfd_make_empty_symbol (abfd);
|
| 3172 |
|
|
newsym->name = h->root.root.string + 1;
|
| 3173 |
|
|
newsym->section = bfd_und_section_ptr;
|
| 3174 |
|
|
newsym->value = 0;
|
| 3175 |
|
|
newsym->flags = BSF_OBJECT;
|
| 3176 |
|
|
if (h->root.type == bfd_link_hash_undefweak)
|
| 3177 |
|
|
newsym->flags |= BSF_WEAK;
|
| 3178 |
|
|
|
| 3179 |
|
|
if ( !(_bfd_generic_link_add_one_symbol
|
| 3180 |
|
|
(info, abfd, newsym->name, newsym->flags,
|
| 3181 |
|
|
newsym->section, newsym->value, NULL, false, false,
|
| 3182 |
|
|
(struct bfd_link_hash_entry **) &fdh)))
|
| 3183 |
|
|
{
|
| 3184 |
|
|
return false;
|
| 3185 |
|
|
}
|
| 3186 |
|
|
fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
|
| 3187 |
|
|
}
|
| 3188 |
|
|
|
| 3189 |
|
|
if (fdh != NULL
|
| 3190 |
|
|
&& (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
|
| 3191 |
|
|
&& (info->shared
|
| 3192 |
|
|
|| (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
| 3193 |
|
|
|| (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
|
| 3194 |
|
|
{
|
| 3195 |
|
|
if (fdh->dynindx == -1)
|
| 3196 |
|
|
if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
|
| 3197 |
|
|
return false;
|
| 3198 |
|
|
fdh->elf_link_hash_flags |= (h->elf_link_hash_flags
|
| 3199 |
|
|
& (ELF_LINK_HASH_REF_REGULAR
|
| 3200 |
|
|
| ELF_LINK_HASH_REF_DYNAMIC
|
| 3201 |
|
|
| ELF_LINK_HASH_REF_REGULAR_NONWEAK
|
| 3202 |
|
|
| ELF_LINK_NON_GOT_REF));
|
| 3203 |
|
|
if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
|
| 3204 |
|
|
{
|
| 3205 |
|
|
fdh->plt.refcount = h->plt.refcount;
|
| 3206 |
|
|
fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
| 3207 |
|
|
}
|
| 3208 |
|
|
((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
|
| 3209 |
|
|
((struct ppc_link_hash_entry *) fdh)->oh = h;
|
| 3210 |
|
|
((struct ppc_link_hash_entry *) h)->oh = fdh;
|
| 3211 |
|
|
}
|
| 3212 |
|
|
|
| 3213 |
|
|
/* Now that the info is on the function descriptor, clear the
|
| 3214 |
|
|
function code sym info. Any function code syms for which we
|
| 3215 |
|
|
don't have a definition in a regular file, we force local.
|
| 3216 |
|
|
This prevents a shared library from exporting syms that have
|
| 3217 |
|
|
been imported from another library. Function code syms that
|
| 3218 |
|
|
are really in the library we must leave global to prevent the
|
| 3219 |
|
|
linker dragging in a definition from a static library. */
|
| 3220 |
|
|
force_local = (info->shared
|
| 3221 |
|
|
&& ((h->elf_link_hash_flags
|
| 3222 |
|
|
& ELF_LINK_HASH_DEF_REGULAR) == 0
|
| 3223 |
|
|
|| fdh == NULL
|
| 3224 |
|
|
|| (fdh->elf_link_hash_flags
|
| 3225 |
|
|
& ELF_LINK_HASH_DEF_REGULAR) == 0
|
| 3226 |
|
|
|| (fdh->elf_link_hash_flags
|
| 3227 |
|
|
& ELF_LINK_FORCED_LOCAL) != 0));
|
| 3228 |
|
|
_bfd_elf_link_hash_hide_symbol (info, h, force_local);
|
| 3229 |
|
|
}
|
| 3230 |
|
|
|
| 3231 |
|
|
return true;
|
| 3232 |
|
|
}
|
| 3233 |
|
|
|
| 3234 |
|
|
#define MIN_SAVE_FPR 14
|
| 3235 |
|
|
#define MAX_SAVE_FPR 31
|
| 3236 |
|
|
|
| 3237 |
|
|
/* Called near the start of bfd_elf_size_dynamic_sections. We use
|
| 3238 |
|
|
this hook to a) provide some gcc support functions, and b) transfer
|
| 3239 |
|
|
dynamic linking information gathered so far on function code symbol
|
| 3240 |
|
|
entries, to their corresponding function descriptor symbol entries. */
|
| 3241 |
|
|
static boolean
|
| 3242 |
|
|
ppc64_elf_func_desc_adjust (obfd, info)
|
| 3243 |
|
|
bfd *obfd ATTRIBUTE_UNUSED;
|
| 3244 |
|
|
struct bfd_link_info *info;
|
| 3245 |
|
|
{
|
| 3246 |
|
|
struct ppc_link_hash_table *htab;
|
| 3247 |
|
|
unsigned int lowest_savef = MAX_SAVE_FPR + 2;
|
| 3248 |
|
|
unsigned int lowest_restf = MAX_SAVE_FPR + 2;
|
| 3249 |
|
|
unsigned int i;
|
| 3250 |
|
|
struct elf_link_hash_entry *h;
|
| 3251 |
|
|
bfd_byte *p;
|
| 3252 |
|
|
char sym[10];
|
| 3253 |
|
|
|
| 3254 |
|
|
htab = ppc_hash_table (info);
|
| 3255 |
|
|
|
| 3256 |
|
|
if (htab->sfpr == NULL)
|
| 3257 |
|
|
/* We don't have any relocs. */
|
| 3258 |
|
|
return true;
|
| 3259 |
|
|
|
| 3260 |
|
|
/* First provide any missing ._savef* and ._restf* functions. */
|
| 3261 |
|
|
memcpy (sym, "._savef14", 10);
|
| 3262 |
|
|
for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
|
| 3263 |
|
|
{
|
| 3264 |
|
|
sym[7] = i / 10 + '0';
|
| 3265 |
|
|
sym[8] = i % 10 + '0';
|
| 3266 |
|
|
h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
|
| 3267 |
|
|
if (h != NULL
|
| 3268 |
|
|
&& h->root.type == bfd_link_hash_undefined)
|
| 3269 |
|
|
{
|
| 3270 |
|
|
if (lowest_savef > i)
|
| 3271 |
|
|
lowest_savef = i;
|
| 3272 |
|
|
h->root.type = bfd_link_hash_defined;
|
| 3273 |
|
|
h->root.u.def.section = htab->sfpr;
|
| 3274 |
|
|
h->root.u.def.value = (i - lowest_savef) * 4;
|
| 3275 |
|
|
h->type = STT_FUNC;
|
| 3276 |
|
|
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
|
| 3277 |
|
|
_bfd_elf_link_hash_hide_symbol (info, h, info->shared);
|
| 3278 |
|
|
}
|
| 3279 |
|
|
}
|
| 3280 |
|
|
|
| 3281 |
|
|
memcpy (sym, "._restf14", 10);
|
| 3282 |
|
|
for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
|
| 3283 |
|
|
{
|
| 3284 |
|
|
sym[7] = i / 10 + '0';
|
| 3285 |
|
|
sym[8] = i % 10 + '0';
|
| 3286 |
|
|
h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
|
| 3287 |
|
|
if (h != NULL
|
| 3288 |
|
|
&& h->root.type == bfd_link_hash_undefined)
|
| 3289 |
|
|
{
|
| 3290 |
|
|
if (lowest_restf > i)
|
| 3291 |
|
|
lowest_restf = i;
|
| 3292 |
|
|
h->root.type = bfd_link_hash_defined;
|
| 3293 |
|
|
h->root.u.def.section = htab->sfpr;
|
| 3294 |
|
|
h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
|
| 3295 |
|
|
+ (i - lowest_restf) * 4);
|
| 3296 |
|
|
h->type = STT_FUNC;
|
| 3297 |
|
|
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
|
| 3298 |
|
|
_bfd_elf_link_hash_hide_symbol (info, h, info->shared);
|
| 3299 |
|
|
}
|
| 3300 |
|
|
}
|
| 3301 |
|
|
|
| 3302 |
|
|
elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info);
|
| 3303 |
|
|
|
| 3304 |
|
|
htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
|
| 3305 |
|
|
+ (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
|
| 3306 |
|
|
|
| 3307 |
|
|
if (htab->sfpr->_raw_size == 0)
|
| 3308 |
|
|
{
|
| 3309 |
|
|
if (!htab->have_undefweak)
|
| 3310 |
|
|
{
|
| 3311 |
|
|
_bfd_strip_section_from_output (info, htab->sfpr);
|
| 3312 |
|
|
return true;
|
| 3313 |
|
|
}
|
| 3314 |
|
|
|
| 3315 |
|
|
htab->sfpr->_raw_size = 4;
|
| 3316 |
|
|
}
|
| 3317 |
|
|
|
| 3318 |
|
|
p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
|
| 3319 |
|
|
if (p == NULL)
|
| 3320 |
|
|
return false;
|
| 3321 |
|
|
htab->sfpr->contents = p;
|
| 3322 |
|
|
|
| 3323 |
|
|
for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
|
| 3324 |
|
|
{
|
| 3325 |
|
|
unsigned int fpr = i << 21;
|
| 3326 |
|
|
unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
|
| 3327 |
|
|
bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
|
| 3328 |
|
|
p += 4;
|
| 3329 |
|
|
}
|
| 3330 |
|
|
if (lowest_savef <= MAX_SAVE_FPR)
|
| 3331 |
|
|
{
|
| 3332 |
|
|
bfd_put_32 (htab->elf.dynobj, BLR, p);
|
| 3333 |
|
|
p += 4;
|
| 3334 |
|
|
}
|
| 3335 |
|
|
|
| 3336 |
|
|
for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
|
| 3337 |
|
|
{
|
| 3338 |
|
|
unsigned int fpr = i << 21;
|
| 3339 |
|
|
unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
|
| 3340 |
|
|
bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
|
| 3341 |
|
|
p += 4;
|
| 3342 |
|
|
}
|
| 3343 |
|
|
if (lowest_restf <= MAX_SAVE_FPR
|
| 3344 |
|
|
|| htab->sfpr->_raw_size == 4)
|
| 3345 |
|
|
{
|
| 3346 |
|
|
bfd_put_32 (htab->elf.dynobj, BLR, p);
|
| 3347 |
|
|
}
|
| 3348 |
|
|
|
| 3349 |
|
|
return true;
|
| 3350 |
|
|
}
|
| 3351 |
|
|
|
| 3352 |
|
|
/* Adjust a symbol defined by a dynamic object and referenced by a
|
| 3353 |
|
|
regular object. The current definition is in some section of the
|
| 3354 |
|
|
dynamic object, but we're not including those sections. We have to
|
| 3355 |
|
|
change the definition to something the rest of the link can
|
| 3356 |
|
|
understand. */
|
| 3357 |
|
|
|
| 3358 |
|
|
static boolean
|
| 3359 |
|
|
ppc64_elf_adjust_dynamic_symbol (info, h)
|
| 3360 |
|
|
struct bfd_link_info *info;
|
| 3361 |
|
|
struct elf_link_hash_entry *h;
|
| 3362 |
|
|
{
|
| 3363 |
|
|
struct ppc_link_hash_table *htab;
|
| 3364 |
|
|
struct ppc_link_hash_entry * eh;
|
| 3365 |
|
|
struct ppc_dyn_relocs *p;
|
| 3366 |
|
|
asection *s;
|
| 3367 |
|
|
unsigned int power_of_two;
|
| 3368 |
|
|
|
| 3369 |
|
|
htab = ppc_hash_table (info);
|
| 3370 |
|
|
|
| 3371 |
|
|
/* Deal with function syms. */
|
| 3372 |
|
|
if (h->type == STT_FUNC
|
| 3373 |
|
|
|| (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
|
| 3374 |
|
|
{
|
| 3375 |
|
|
/* Clear procedure linkage table information for any symbol that
|
| 3376 |
|
|
won't need a .plt entry. */
|
| 3377 |
|
|
if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
|
| 3378 |
|
|
|| h->plt.refcount <= 0
|
| 3379 |
|
|
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
|
| 3380 |
|
|
|| (! info->shared
|
| 3381 |
|
|
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
|
| 3382 |
|
|
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
|
| 3383 |
|
|
{
|
| 3384 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 3385 |
|
|
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
| 3386 |
|
|
}
|
| 3387 |
|
|
return true;
|
| 3388 |
|
|
}
|
| 3389 |
|
|
else
|
| 3390 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 3391 |
|
|
|
| 3392 |
|
|
/* If this is a weak symbol, and there is a real definition, the
|
| 3393 |
|
|
processor independent code will have arranged for us to see the
|
| 3394 |
|
|
real definition first, and we can just use the same value. */
|
| 3395 |
|
|
if (h->weakdef != NULL)
|
| 3396 |
|
|
{
|
| 3397 |
|
|
BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
|
| 3398 |
|
|
|| h->weakdef->root.type == bfd_link_hash_defweak);
|
| 3399 |
|
|
h->root.u.def.section = h->weakdef->root.u.def.section;
|
| 3400 |
|
|
h->root.u.def.value = h->weakdef->root.u.def.value;
|
| 3401 |
|
|
return true;
|
| 3402 |
|
|
}
|
| 3403 |
|
|
|
| 3404 |
|
|
/* This is a reference to a symbol defined by a dynamic object which
|
| 3405 |
|
|
is not a function. */
|
| 3406 |
|
|
|
| 3407 |
|
|
/* If we are creating a shared library, we must presume that the
|
| 3408 |
|
|
only references to the symbol are via the global offset table.
|
| 3409 |
|
|
For such cases we need not do anything here; the relocations will
|
| 3410 |
|
|
be handled correctly by relocate_section. */
|
| 3411 |
|
|
if (info->shared)
|
| 3412 |
|
|
return true;
|
| 3413 |
|
|
|
| 3414 |
|
|
/* If there are no references to this symbol that do not use the
|
| 3415 |
|
|
GOT, we don't need to generate a copy reloc. */
|
| 3416 |
|
|
if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
|
| 3417 |
|
|
return true;
|
| 3418 |
|
|
|
| 3419 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 3420 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 3421 |
|
|
{
|
| 3422 |
|
|
s = p->sec->output_section;
|
| 3423 |
|
|
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
| 3424 |
|
|
break;
|
| 3425 |
|
|
}
|
| 3426 |
|
|
|
| 3427 |
|
|
/* If we didn't find any dynamic relocs in read-only sections, then
|
| 3428 |
|
|
we'll be keeping the dynamic relocs and avoiding the copy reloc. */
|
| 3429 |
|
|
if (p == NULL)
|
| 3430 |
|
|
{
|
| 3431 |
|
|
h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
|
| 3432 |
|
|
return true;
|
| 3433 |
|
|
}
|
| 3434 |
|
|
|
| 3435 |
|
|
/* We must allocate the symbol in our .dynbss section, which will
|
| 3436 |
|
|
become part of the .bss section of the executable. There will be
|
| 3437 |
|
|
an entry for this symbol in the .dynsym section. The dynamic
|
| 3438 |
|
|
object will contain position independent code, so all references
|
| 3439 |
|
|
from the dynamic object to this symbol will go through the global
|
| 3440 |
|
|
offset table. The dynamic linker will use the .dynsym entry to
|
| 3441 |
|
|
determine the address it must put in the global offset table, so
|
| 3442 |
|
|
both the dynamic object and the regular object will refer to the
|
| 3443 |
|
|
same memory location for the variable. */
|
| 3444 |
|
|
|
| 3445 |
|
|
/* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
|
| 3446 |
|
|
copy the initial value out of the dynamic object and into the
|
| 3447 |
|
|
runtime process image. We need to remember the offset into the
|
| 3448 |
|
|
.rela.bss section we are going to use. */
|
| 3449 |
|
|
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
| 3450 |
|
|
{
|
| 3451 |
|
|
htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
|
| 3452 |
|
|
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
|
| 3453 |
|
|
}
|
| 3454 |
|
|
|
| 3455 |
|
|
/* We need to figure out the alignment required for this symbol. I
|
| 3456 |
|
|
have no idea how ELF linkers handle this. */
|
| 3457 |
|
|
power_of_two = bfd_log2 (h->size);
|
| 3458 |
|
|
if (power_of_two > 4)
|
| 3459 |
|
|
power_of_two = 4;
|
| 3460 |
|
|
|
| 3461 |
|
|
/* Apply the required alignment. */
|
| 3462 |
|
|
s = htab->sdynbss;
|
| 3463 |
|
|
s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
|
| 3464 |
|
|
if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
|
| 3465 |
|
|
{
|
| 3466 |
|
|
if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
|
| 3467 |
|
|
return false;
|
| 3468 |
|
|
}
|
| 3469 |
|
|
|
| 3470 |
|
|
/* Define the symbol as being at this point in the section. */
|
| 3471 |
|
|
h->root.u.def.section = s;
|
| 3472 |
|
|
h->root.u.def.value = s->_raw_size;
|
| 3473 |
|
|
|
| 3474 |
|
|
/* Increment the section size to make room for the symbol. */
|
| 3475 |
|
|
s->_raw_size += h->size;
|
| 3476 |
|
|
|
| 3477 |
|
|
return true;
|
| 3478 |
|
|
}
|
| 3479 |
|
|
|
| 3480 |
|
|
/* If given a function descriptor symbol, hide both the function code
|
| 3481 |
|
|
sym and the descriptor. */
|
| 3482 |
|
|
static void
|
| 3483 |
|
|
ppc64_elf_hide_symbol (info, h, force_local)
|
| 3484 |
|
|
struct bfd_link_info *info;
|
| 3485 |
|
|
struct elf_link_hash_entry *h;
|
| 3486 |
|
|
boolean force_local;
|
| 3487 |
|
|
{
|
| 3488 |
|
|
_bfd_elf_link_hash_hide_symbol (info, h, force_local);
|
| 3489 |
|
|
|
| 3490 |
|
|
if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
|
| 3491 |
|
|
{
|
| 3492 |
|
|
struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
|
| 3493 |
|
|
|
| 3494 |
|
|
if (fh == NULL)
|
| 3495 |
|
|
{
|
| 3496 |
|
|
const char *p, *q;
|
| 3497 |
|
|
struct ppc_link_hash_table *htab;
|
| 3498 |
|
|
char save;
|
| 3499 |
|
|
|
| 3500 |
|
|
/* We aren't supposed to use alloca in BFD because on
|
| 3501 |
|
|
systems which do not have alloca the version in libiberty
|
| 3502 |
|
|
calls xmalloc, which might cause the program to crash
|
| 3503 |
|
|
when it runs out of memory. This function doesn't have a
|
| 3504 |
|
|
return status, so there's no way to gracefully return an
|
| 3505 |
|
|
error. So cheat. We know that string[-1] can be safely
|
| 3506 |
|
|
dereferenced; It's either a string in an ELF string
|
| 3507 |
|
|
table, or allocated in an objalloc structure. */
|
| 3508 |
|
|
|
| 3509 |
|
|
p = h->root.root.string - 1;
|
| 3510 |
|
|
save = *p;
|
| 3511 |
|
|
*(char *) p = '.';
|
| 3512 |
|
|
htab = ppc_hash_table (info);
|
| 3513 |
|
|
fh = elf_link_hash_lookup (&htab->elf, p, false, false, false);
|
| 3514 |
|
|
*(char *) p = save;
|
| 3515 |
|
|
|
| 3516 |
|
|
/* Unfortunately, if it so happens that the string we were
|
| 3517 |
|
|
looking for was allocated immediately before this string,
|
| 3518 |
|
|
then we overwrote the string terminator. That's the only
|
| 3519 |
|
|
reason the lookup should fail. */
|
| 3520 |
|
|
if (fh == NULL)
|
| 3521 |
|
|
{
|
| 3522 |
|
|
q = h->root.root.string + strlen (h->root.root.string);
|
| 3523 |
|
|
while (q >= h->root.root.string && *q == *p)
|
| 3524 |
|
|
--q, --p;
|
| 3525 |
|
|
if (q < h->root.root.string && *p == '.')
|
| 3526 |
|
|
fh = elf_link_hash_lookup (&htab->elf, p, false, false, false);
|
| 3527 |
|
|
}
|
| 3528 |
|
|
if (fh != NULL)
|
| 3529 |
|
|
{
|
| 3530 |
|
|
((struct ppc_link_hash_entry *) h)->oh = fh;
|
| 3531 |
|
|
((struct ppc_link_hash_entry *) fh)->oh = h;
|
| 3532 |
|
|
}
|
| 3533 |
|
|
}
|
| 3534 |
|
|
if (fh != NULL)
|
| 3535 |
|
|
_bfd_elf_link_hash_hide_symbol (info, fh, force_local);
|
| 3536 |
|
|
}
|
| 3537 |
|
|
}
|
| 3538 |
|
|
|
| 3539 |
|
|
static boolean
|
| 3540 |
|
|
edit_opd (obfd, info)
|
| 3541 |
|
|
bfd *obfd;
|
| 3542 |
|
|
struct bfd_link_info *info;
|
| 3543 |
|
|
{
|
| 3544 |
|
|
bfd *ibfd;
|
| 3545 |
|
|
unsigned int bfd_indx;
|
| 3546 |
|
|
|
| 3547 |
|
|
for (bfd_indx = 0, ibfd = info->input_bfds;
|
| 3548 |
|
|
ibfd != NULL;
|
| 3549 |
|
|
ibfd = ibfd->link_next, bfd_indx++)
|
| 3550 |
|
|
{
|
| 3551 |
|
|
asection *sec;
|
| 3552 |
|
|
Elf_Internal_Rela *relstart, *rel, *relend;
|
| 3553 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 3554 |
|
|
Elf_Internal_Sym *local_syms;
|
| 3555 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 3556 |
|
|
bfd_vma offset;
|
| 3557 |
|
|
long *adjust;
|
| 3558 |
|
|
boolean need_edit;
|
| 3559 |
|
|
|
| 3560 |
|
|
sec = bfd_get_section_by_name (ibfd, ".opd");
|
| 3561 |
|
|
if (sec == NULL)
|
| 3562 |
|
|
continue;
|
| 3563 |
|
|
|
| 3564 |
|
|
adjust = (long *) elf_section_data (sec)->tdata;
|
| 3565 |
|
|
BFD_ASSERT (adjust != NULL);
|
| 3566 |
|
|
memset (adjust, 0, (size_t) sec->_raw_size * sizeof (long) / 24);
|
| 3567 |
|
|
|
| 3568 |
|
|
if (sec->output_section == bfd_abs_section_ptr)
|
| 3569 |
|
|
continue;
|
| 3570 |
|
|
|
| 3571 |
|
|
/* Look through the section relocs. */
|
| 3572 |
|
|
if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
|
| 3573 |
|
|
continue;
|
| 3574 |
|
|
|
| 3575 |
|
|
local_syms = NULL;
|
| 3576 |
|
|
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
| 3577 |
|
|
sym_hashes = elf_sym_hashes (ibfd);
|
| 3578 |
|
|
|
| 3579 |
|
|
/* Read the relocations. */
|
| 3580 |
|
|
relstart = _bfd_elf64_link_read_relocs (obfd, sec, (PTR) NULL,
|
| 3581 |
|
|
(Elf_Internal_Rela *) NULL,
|
| 3582 |
|
|
info->keep_memory);
|
| 3583 |
|
|
if (relstart == NULL)
|
| 3584 |
|
|
return false;
|
| 3585 |
|
|
|
| 3586 |
|
|
/* First run through the relocs to check they are sane, and to
|
| 3587 |
|
|
determine whether we need to edit this opd section. */
|
| 3588 |
|
|
need_edit = false;
|
| 3589 |
|
|
offset = 0;
|
| 3590 |
|
|
relend = relstart + sec->reloc_count;
|
| 3591 |
|
|
for (rel = relstart; rel < relend; rel++)
|
| 3592 |
|
|
{
|
| 3593 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 3594 |
|
|
unsigned long r_symndx;
|
| 3595 |
|
|
asection *sym_sec;
|
| 3596 |
|
|
struct elf_link_hash_entry *h;
|
| 3597 |
|
|
Elf_Internal_Sym *sym;
|
| 3598 |
|
|
|
| 3599 |
|
|
/* .opd contains a regular array of 24 byte entries. We're
|
| 3600 |
|
|
only interested in the reloc pointing to a function entry
|
| 3601 |
|
|
point. */
|
| 3602 |
|
|
r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
|
| 3603 |
|
|
if (r_type == R_PPC64_TOC)
|
| 3604 |
|
|
continue;
|
| 3605 |
|
|
|
| 3606 |
|
|
if (r_type != R_PPC64_ADDR64)
|
| 3607 |
|
|
{
|
| 3608 |
|
|
(*_bfd_error_handler)
|
| 3609 |
|
|
(_("%s: unexpected reloc type %u in .opd section"),
|
| 3610 |
|
|
bfd_archive_filename (ibfd), r_type);
|
| 3611 |
|
|
need_edit = false;
|
| 3612 |
|
|
break;
|
| 3613 |
|
|
}
|
| 3614 |
|
|
|
| 3615 |
|
|
if (rel + 1 >= relend)
|
| 3616 |
|
|
continue;
|
| 3617 |
|
|
r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info);
|
| 3618 |
|
|
if (r_type != R_PPC64_TOC)
|
| 3619 |
|
|
continue;
|
| 3620 |
|
|
|
| 3621 |
|
|
if (rel->r_offset != offset)
|
| 3622 |
|
|
{
|
| 3623 |
|
|
/* If someone messes with .opd alignment then after a
|
| 3624 |
|
|
"ld -r" we might have padding in the middle of .opd.
|
| 3625 |
|
|
Also, there's nothing to prevent someone putting
|
| 3626 |
|
|
something silly in .opd with the assembler. No .opd
|
| 3627 |
|
|
optimization for them! */
|
| 3628 |
|
|
(*_bfd_error_handler)
|
| 3629 |
|
|
(_("%s: .opd is not a regular array of opd entries"),
|
| 3630 |
|
|
bfd_archive_filename (ibfd));
|
| 3631 |
|
|
need_edit = false;
|
| 3632 |
|
|
break;
|
| 3633 |
|
|
}
|
| 3634 |
|
|
|
| 3635 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 3636 |
|
|
sym_sec = NULL;
|
| 3637 |
|
|
h = NULL;
|
| 3638 |
|
|
sym = NULL;
|
| 3639 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 3640 |
|
|
{
|
| 3641 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 3642 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 3643 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 3644 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 3645 |
|
|
if (h->root.type == bfd_link_hash_defined
|
| 3646 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 3647 |
|
|
sym_sec = h->root.u.def.section;
|
| 3648 |
|
|
}
|
| 3649 |
|
|
else
|
| 3650 |
|
|
{
|
| 3651 |
|
|
if (local_syms == NULL)
|
| 3652 |
|
|
{
|
| 3653 |
|
|
local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 3654 |
|
|
if (local_syms == NULL)
|
| 3655 |
|
|
local_syms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
|
| 3656 |
|
|
symtab_hdr->sh_info, 0,
|
| 3657 |
|
|
NULL, NULL, NULL);
|
| 3658 |
|
|
if (local_syms == NULL)
|
| 3659 |
|
|
goto error_free_rel;
|
| 3660 |
|
|
}
|
| 3661 |
|
|
sym = local_syms + r_symndx;
|
| 3662 |
|
|
if ((sym->st_shndx != SHN_UNDEF
|
| 3663 |
|
|
&& sym->st_shndx < SHN_LORESERVE)
|
| 3664 |
|
|
|| sym->st_shndx > SHN_HIRESERVE)
|
| 3665 |
|
|
sym_sec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
|
| 3666 |
|
|
}
|
| 3667 |
|
|
|
| 3668 |
|
|
if (sym_sec == NULL || sym_sec->owner == NULL)
|
| 3669 |
|
|
{
|
| 3670 |
|
|
(*_bfd_error_handler)
|
| 3671 |
|
|
(_("%s: undefined sym `%s' in .opd section"),
|
| 3672 |
|
|
bfd_archive_filename (ibfd),
|
| 3673 |
|
|
h != NULL ? h->root.root.string : "<local symbol>");
|
| 3674 |
|
|
need_edit = false;
|
| 3675 |
|
|
break;
|
| 3676 |
|
|
}
|
| 3677 |
|
|
|
| 3678 |
|
|
if (sym_sec->output_section == bfd_abs_section_ptr)
|
| 3679 |
|
|
{
|
| 3680 |
|
|
/* OK, we've found a function that's excluded from the
|
| 3681 |
|
|
link. */
|
| 3682 |
|
|
need_edit = true;
|
| 3683 |
|
|
}
|
| 3684 |
|
|
|
| 3685 |
|
|
offset += 24;
|
| 3686 |
|
|
}
|
| 3687 |
|
|
|
| 3688 |
|
|
if (need_edit)
|
| 3689 |
|
|
{
|
| 3690 |
|
|
Elf_Internal_Rela *write_rel;
|
| 3691 |
|
|
bfd_byte *rptr, *wptr;
|
| 3692 |
|
|
boolean skip;
|
| 3693 |
|
|
|
| 3694 |
|
|
/* This seems a waste of time as input .opd sections are all
|
| 3695 |
|
|
zeros as generated by gcc, but I suppose there's no reason
|
| 3696 |
|
|
this will always be so. We might start putting something in
|
| 3697 |
|
|
the third word of .opd entries. */
|
| 3698 |
|
|
if ((sec->flags & SEC_IN_MEMORY) == 0)
|
| 3699 |
|
|
{
|
| 3700 |
|
|
bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size);
|
| 3701 |
|
|
if (loc == NULL
|
| 3702 |
|
|
|| !bfd_get_section_contents (ibfd, sec, loc, (bfd_vma) 0,
|
| 3703 |
|
|
sec->_raw_size))
|
| 3704 |
|
|
{
|
| 3705 |
|
|
if (local_syms != NULL
|
| 3706 |
|
|
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
| 3707 |
|
|
free (local_syms);
|
| 3708 |
|
|
error_free_rel:
|
| 3709 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 3710 |
|
|
free (relstart);
|
| 3711 |
|
|
return false;
|
| 3712 |
|
|
}
|
| 3713 |
|
|
sec->contents = loc;
|
| 3714 |
|
|
sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
|
| 3715 |
|
|
}
|
| 3716 |
|
|
|
| 3717 |
|
|
elf_section_data (sec)->relocs = relstart;
|
| 3718 |
|
|
|
| 3719 |
|
|
wptr = sec->contents;
|
| 3720 |
|
|
rptr = sec->contents;
|
| 3721 |
|
|
write_rel = relstart;
|
| 3722 |
|
|
skip = false;
|
| 3723 |
|
|
offset = 0;
|
| 3724 |
|
|
for (rel = relstart; rel < relend; rel++)
|
| 3725 |
|
|
{
|
| 3726 |
|
|
if (rel->r_offset == offset)
|
| 3727 |
|
|
{
|
| 3728 |
|
|
unsigned long r_symndx;
|
| 3729 |
|
|
asection *sym_sec;
|
| 3730 |
|
|
struct elf_link_hash_entry *h;
|
| 3731 |
|
|
Elf_Internal_Sym *sym;
|
| 3732 |
|
|
|
| 3733 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 3734 |
|
|
sym_sec = NULL;
|
| 3735 |
|
|
h = NULL;
|
| 3736 |
|
|
sym = NULL;
|
| 3737 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 3738 |
|
|
{
|
| 3739 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 3740 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 3741 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 3742 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 3743 |
|
|
if (h->root.type == bfd_link_hash_defined
|
| 3744 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 3745 |
|
|
sym_sec = h->root.u.def.section;
|
| 3746 |
|
|
}
|
| 3747 |
|
|
else
|
| 3748 |
|
|
{
|
| 3749 |
|
|
sym = local_syms + r_symndx;
|
| 3750 |
|
|
if ((sym->st_shndx != SHN_UNDEF
|
| 3751 |
|
|
&& sym->st_shndx < SHN_LORESERVE)
|
| 3752 |
|
|
|| sym->st_shndx > SHN_HIRESERVE)
|
| 3753 |
|
|
sym_sec = bfd_section_from_elf_index (ibfd,
|
| 3754 |
|
|
sym->st_shndx);
|
| 3755 |
|
|
}
|
| 3756 |
|
|
|
| 3757 |
|
|
skip = sym_sec->output_section == bfd_abs_section_ptr;
|
| 3758 |
|
|
if (skip)
|
| 3759 |
|
|
{
|
| 3760 |
|
|
if (h != NULL)
|
| 3761 |
|
|
{
|
| 3762 |
|
|
/* Arrange for the function descriptor sym
|
| 3763 |
|
|
to be dropped. */
|
| 3764 |
|
|
struct elf_link_hash_entry *fdh;
|
| 3765 |
|
|
struct ppc_link_hash_entry *fh;
|
| 3766 |
|
|
|
| 3767 |
|
|
fh = (struct ppc_link_hash_entry *) h;
|
| 3768 |
|
|
BFD_ASSERT (fh->is_func);
|
| 3769 |
|
|
fdh = fh->oh;
|
| 3770 |
|
|
fdh->root.u.def.value = 0;
|
| 3771 |
|
|
fdh->root.u.def.section = sym_sec;
|
| 3772 |
|
|
}
|
| 3773 |
|
|
}
|
| 3774 |
|
|
else
|
| 3775 |
|
|
{
|
| 3776 |
|
|
/* We'll be keeping this opd entry. */
|
| 3777 |
|
|
|
| 3778 |
|
|
if (h != NULL)
|
| 3779 |
|
|
{
|
| 3780 |
|
|
/* Redefine the function descriptor symbol
|
| 3781 |
|
|
to this location in the opd section.
|
| 3782 |
|
|
We've checked above that opd relocs are
|
| 3783 |
|
|
ordered. */
|
| 3784 |
|
|
struct elf_link_hash_entry *fdh;
|
| 3785 |
|
|
struct ppc_link_hash_entry *fh;
|
| 3786 |
|
|
|
| 3787 |
|
|
fh = (struct ppc_link_hash_entry *) h;
|
| 3788 |
|
|
BFD_ASSERT (fh->is_func);
|
| 3789 |
|
|
fdh = fh->oh;
|
| 3790 |
|
|
fdh->root.u.def.value = wptr - sec->contents;
|
| 3791 |
|
|
}
|
| 3792 |
|
|
else
|
| 3793 |
|
|
{
|
| 3794 |
|
|
/* Local syms are a bit tricky. We could
|
| 3795 |
|
|
tweak them as they can be cached, but
|
| 3796 |
|
|
we'd need to look through the local syms
|
| 3797 |
|
|
for the function descriptor sym which we
|
| 3798 |
|
|
don't have at the moment. So keep an
|
| 3799 |
|
|
array of adjustments. */
|
| 3800 |
|
|
adjust[(rel->r_offset + wptr - rptr) / 24]
|
| 3801 |
|
|
= wptr - rptr;
|
| 3802 |
|
|
}
|
| 3803 |
|
|
|
| 3804 |
|
|
if (wptr != rptr)
|
| 3805 |
|
|
memcpy (wptr, rptr, 24);
|
| 3806 |
|
|
wptr += 24;
|
| 3807 |
|
|
}
|
| 3808 |
|
|
rptr += 24;
|
| 3809 |
|
|
offset += 24;
|
| 3810 |
|
|
}
|
| 3811 |
|
|
|
| 3812 |
|
|
/* We need to adjust any reloc offsets to point to the
|
| 3813 |
|
|
new opd entries. While we're at it, we may as well
|
| 3814 |
|
|
remove redundant relocs. */
|
| 3815 |
|
|
if (!skip)
|
| 3816 |
|
|
{
|
| 3817 |
|
|
rel->r_offset += wptr - rptr;
|
| 3818 |
|
|
if (write_rel != rel)
|
| 3819 |
|
|
memcpy (write_rel, rel, sizeof (*rel));
|
| 3820 |
|
|
++write_rel;
|
| 3821 |
|
|
}
|
| 3822 |
|
|
}
|
| 3823 |
|
|
|
| 3824 |
|
|
sec->_cooked_size = wptr - sec->contents;
|
| 3825 |
|
|
sec->reloc_count = write_rel - relstart;
|
| 3826 |
|
|
}
|
| 3827 |
|
|
else if (elf_section_data (sec)->relocs != relstart)
|
| 3828 |
|
|
free (relstart);
|
| 3829 |
|
|
|
| 3830 |
|
|
if (local_syms != NULL
|
| 3831 |
|
|
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
| 3832 |
|
|
{
|
| 3833 |
|
|
if (!info->keep_memory)
|
| 3834 |
|
|
free (local_syms);
|
| 3835 |
|
|
else
|
| 3836 |
|
|
symtab_hdr->contents = (unsigned char *) local_syms;
|
| 3837 |
|
|
}
|
| 3838 |
|
|
}
|
| 3839 |
|
|
|
| 3840 |
|
|
return true;
|
| 3841 |
|
|
}
|
| 3842 |
|
|
|
| 3843 |
|
|
/* This is the condition under which ppc64_elf_finish_dynamic_symbol
|
| 3844 |
|
|
will be called from elflink.h. If elflink.h doesn't call our
|
| 3845 |
|
|
finish_dynamic_symbol routine, we'll need to do something about
|
| 3846 |
|
|
initializing any .plt and .got entries in ppc64_elf_relocate_section. */
|
| 3847 |
|
|
#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
|
| 3848 |
|
|
((DYN) \
|
| 3849 |
|
|
&& ((INFO)->shared \
|
| 3850 |
|
|
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
|
| 3851 |
|
|
&& ((H)->dynindx != -1 \
|
| 3852 |
|
|
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
|
| 3853 |
|
|
|
| 3854 |
|
|
/* Allocate space in .plt, .got and associated reloc sections for
|
| 3855 |
|
|
dynamic relocs. */
|
| 3856 |
|
|
|
| 3857 |
|
|
static boolean
|
| 3858 |
|
|
allocate_dynrelocs (h, inf)
|
| 3859 |
|
|
struct elf_link_hash_entry *h;
|
| 3860 |
|
|
PTR inf;
|
| 3861 |
|
|
{
|
| 3862 |
|
|
struct bfd_link_info *info;
|
| 3863 |
|
|
struct ppc_link_hash_table *htab;
|
| 3864 |
|
|
asection *s;
|
| 3865 |
|
|
struct ppc_link_hash_entry *eh;
|
| 3866 |
|
|
struct ppc_dyn_relocs *p;
|
| 3867 |
|
|
|
| 3868 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 3869 |
|
|
return true;
|
| 3870 |
|
|
|
| 3871 |
|
|
if (h->root.type == bfd_link_hash_warning)
|
| 3872 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 3873 |
|
|
|
| 3874 |
|
|
info = (struct bfd_link_info *) inf;
|
| 3875 |
|
|
htab = ppc_hash_table (info);
|
| 3876 |
|
|
|
| 3877 |
|
|
if (htab->elf.dynamic_sections_created
|
| 3878 |
|
|
&& h->plt.refcount > 0
|
| 3879 |
|
|
&& h->dynindx != -1)
|
| 3880 |
|
|
{
|
| 3881 |
|
|
BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
|
| 3882 |
|
|
|
| 3883 |
|
|
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
|
| 3884 |
|
|
{
|
| 3885 |
|
|
/* If this is the first .plt entry, make room for the special
|
| 3886 |
|
|
first entry. */
|
| 3887 |
|
|
s = htab->splt;
|
| 3888 |
|
|
if (s->_raw_size == 0)
|
| 3889 |
|
|
s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
|
| 3890 |
|
|
|
| 3891 |
|
|
h->plt.offset = s->_raw_size;
|
| 3892 |
|
|
|
| 3893 |
|
|
/* Make room for this entry. */
|
| 3894 |
|
|
s->_raw_size += PLT_ENTRY_SIZE;
|
| 3895 |
|
|
|
| 3896 |
|
|
/* Make room for the .glink code. */
|
| 3897 |
|
|
s = htab->sglink;
|
| 3898 |
|
|
if (s->_raw_size == 0)
|
| 3899 |
|
|
s->_raw_size += GLINK_CALL_STUB_SIZE;
|
| 3900 |
|
|
/* We need bigger stubs past index 32767. */
|
| 3901 |
|
|
if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
|
| 3902 |
|
|
s->_raw_size += 4;
|
| 3903 |
|
|
s->_raw_size += 2*4;
|
| 3904 |
|
|
|
| 3905 |
|
|
/* We also need to make an entry in the .rela.plt section. */
|
| 3906 |
|
|
s = htab->srelplt;
|
| 3907 |
|
|
s->_raw_size += sizeof (Elf64_External_Rela);
|
| 3908 |
|
|
}
|
| 3909 |
|
|
else
|
| 3910 |
|
|
{
|
| 3911 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 3912 |
|
|
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
| 3913 |
|
|
}
|
| 3914 |
|
|
}
|
| 3915 |
|
|
else
|
| 3916 |
|
|
{
|
| 3917 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 3918 |
|
|
h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
| 3919 |
|
|
}
|
| 3920 |
|
|
|
| 3921 |
|
|
if (h->got.refcount > 0)
|
| 3922 |
|
|
{
|
| 3923 |
|
|
boolean dyn;
|
| 3924 |
|
|
|
| 3925 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 3926 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 3927 |
|
|
if (h->dynindx == -1
|
| 3928 |
|
|
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
|
| 3929 |
|
|
{
|
| 3930 |
|
|
if (! bfd_elf64_link_record_dynamic_symbol (info, h))
|
| 3931 |
|
|
return false;
|
| 3932 |
|
|
}
|
| 3933 |
|
|
|
| 3934 |
|
|
s = htab->sgot;
|
| 3935 |
|
|
h->got.offset = s->_raw_size;
|
| 3936 |
|
|
s->_raw_size += 8;
|
| 3937 |
|
|
dyn = htab->elf.dynamic_sections_created;
|
| 3938 |
|
|
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
|
| 3939 |
|
|
htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
|
| 3940 |
|
|
}
|
| 3941 |
|
|
else
|
| 3942 |
|
|
h->got.offset = (bfd_vma) -1;
|
| 3943 |
|
|
|
| 3944 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 3945 |
|
|
if (eh->dyn_relocs == NULL)
|
| 3946 |
|
|
return true;
|
| 3947 |
|
|
|
| 3948 |
|
|
/* In the shared -Bsymbolic case, discard space allocated for
|
| 3949 |
|
|
dynamic pc-relative relocs against symbols which turn out to be
|
| 3950 |
|
|
defined in regular objects. For the normal shared case, discard
|
| 3951 |
|
|
space for relocs that have become local due to symbol visibility
|
| 3952 |
|
|
changes. */
|
| 3953 |
|
|
|
| 3954 |
|
|
if (info->shared)
|
| 3955 |
|
|
{
|
| 3956 |
|
|
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
|
| 3957 |
|
|
&& ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
|
| 3958 |
|
|
|| info->symbolic))
|
| 3959 |
|
|
{
|
| 3960 |
|
|
struct ppc_dyn_relocs **pp;
|
| 3961 |
|
|
|
| 3962 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
|
| 3963 |
|
|
{
|
| 3964 |
|
|
p->count -= p->pc_count;
|
| 3965 |
|
|
p->pc_count = 0;
|
| 3966 |
|
|
if (p->count == 0)
|
| 3967 |
|
|
*pp = p->next;
|
| 3968 |
|
|
else
|
| 3969 |
|
|
pp = &p->next;
|
| 3970 |
|
|
}
|
| 3971 |
|
|
}
|
| 3972 |
|
|
}
|
| 3973 |
|
|
else
|
| 3974 |
|
|
{
|
| 3975 |
|
|
/* For the non-shared case, discard space for relocs against
|
| 3976 |
|
|
symbols which turn out to need copy relocs or are not
|
| 3977 |
|
|
dynamic. */
|
| 3978 |
|
|
|
| 3979 |
|
|
if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
|
| 3980 |
|
|
&& (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
| 3981 |
|
|
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
| 3982 |
|
|
|| (htab->elf.dynamic_sections_created
|
| 3983 |
|
|
&& (h->root.type == bfd_link_hash_undefweak
|
| 3984 |
|
|
|| h->root.type == bfd_link_hash_undefined))))
|
| 3985 |
|
|
{
|
| 3986 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 3987 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 3988 |
|
|
if (h->dynindx == -1
|
| 3989 |
|
|
&& (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
|
| 3990 |
|
|
{
|
| 3991 |
|
|
if (! bfd_elf64_link_record_dynamic_symbol (info, h))
|
| 3992 |
|
|
return false;
|
| 3993 |
|
|
}
|
| 3994 |
|
|
|
| 3995 |
|
|
/* If that succeeded, we know we'll be keeping all the
|
| 3996 |
|
|
relocs. */
|
| 3997 |
|
|
if (h->dynindx != -1)
|
| 3998 |
|
|
goto keep;
|
| 3999 |
|
|
}
|
| 4000 |
|
|
|
| 4001 |
|
|
eh->dyn_relocs = NULL;
|
| 4002 |
|
|
|
| 4003 |
|
|
keep: ;
|
| 4004 |
|
|
}
|
| 4005 |
|
|
|
| 4006 |
|
|
/* Finally, allocate space. */
|
| 4007 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 4008 |
|
|
{
|
| 4009 |
|
|
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
| 4010 |
|
|
sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
|
| 4011 |
|
|
}
|
| 4012 |
|
|
|
| 4013 |
|
|
return true;
|
| 4014 |
|
|
}
|
| 4015 |
|
|
|
| 4016 |
|
|
/* Find any dynamic relocs that apply to read-only sections. */
|
| 4017 |
|
|
|
| 4018 |
|
|
static boolean
|
| 4019 |
|
|
readonly_dynrelocs (h, inf)
|
| 4020 |
|
|
struct elf_link_hash_entry *h;
|
| 4021 |
|
|
PTR inf;
|
| 4022 |
|
|
{
|
| 4023 |
|
|
struct ppc_link_hash_entry *eh;
|
| 4024 |
|
|
struct ppc_dyn_relocs *p;
|
| 4025 |
|
|
|
| 4026 |
|
|
if (h->root.type == bfd_link_hash_warning)
|
| 4027 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 4028 |
|
|
|
| 4029 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 4030 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 4031 |
|
|
{
|
| 4032 |
|
|
asection *s = p->sec->output_section;
|
| 4033 |
|
|
|
| 4034 |
|
|
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
| 4035 |
|
|
{
|
| 4036 |
|
|
struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
| 4037 |
|
|
|
| 4038 |
|
|
info->flags |= DF_TEXTREL;
|
| 4039 |
|
|
|
| 4040 |
|
|
/* Not an error, just cut short the traversal. */
|
| 4041 |
|
|
return false;
|
| 4042 |
|
|
}
|
| 4043 |
|
|
}
|
| 4044 |
|
|
return true;
|
| 4045 |
|
|
}
|
| 4046 |
|
|
|
| 4047 |
|
|
/* Set the sizes of the dynamic sections. */
|
| 4048 |
|
|
|
| 4049 |
|
|
static boolean
|
| 4050 |
|
|
ppc64_elf_size_dynamic_sections (output_bfd, info)
|
| 4051 |
|
|
bfd *output_bfd ATTRIBUTE_UNUSED;
|
| 4052 |
|
|
struct bfd_link_info *info;
|
| 4053 |
|
|
{
|
| 4054 |
|
|
struct ppc_link_hash_table *htab;
|
| 4055 |
|
|
bfd *dynobj;
|
| 4056 |
|
|
asection *s;
|
| 4057 |
|
|
boolean relocs;
|
| 4058 |
|
|
bfd *ibfd;
|
| 4059 |
|
|
|
| 4060 |
|
|
htab = ppc_hash_table (info);
|
| 4061 |
|
|
dynobj = htab->elf.dynobj;
|
| 4062 |
|
|
if (dynobj == NULL)
|
| 4063 |
|
|
abort ();
|
| 4064 |
|
|
|
| 4065 |
|
|
if (htab->elf.dynamic_sections_created)
|
| 4066 |
|
|
{
|
| 4067 |
|
|
/* Set the contents of the .interp section to the interpreter. */
|
| 4068 |
|
|
if (! info->shared)
|
| 4069 |
|
|
{
|
| 4070 |
|
|
s = bfd_get_section_by_name (dynobj, ".interp");
|
| 4071 |
|
|
if (s == NULL)
|
| 4072 |
|
|
abort ();
|
| 4073 |
|
|
s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
|
| 4074 |
|
|
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
| 4075 |
|
|
}
|
| 4076 |
|
|
}
|
| 4077 |
|
|
|
| 4078 |
|
|
/* Set up .got offsets for local syms, and space for local dynamic
|
| 4079 |
|
|
relocs. */
|
| 4080 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 4081 |
|
|
{
|
| 4082 |
|
|
bfd_signed_vma *local_got;
|
| 4083 |
|
|
bfd_signed_vma *end_local_got;
|
| 4084 |
|
|
bfd_size_type locsymcount;
|
| 4085 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 4086 |
|
|
asection *srel;
|
| 4087 |
|
|
|
| 4088 |
|
|
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
|
| 4089 |
|
|
continue;
|
| 4090 |
|
|
|
| 4091 |
|
|
for (s = ibfd->sections; s != NULL; s = s->next)
|
| 4092 |
|
|
{
|
| 4093 |
|
|
struct ppc_dyn_relocs *p;
|
| 4094 |
|
|
|
| 4095 |
|
|
for (p = *((struct ppc_dyn_relocs **)
|
| 4096 |
|
|
&elf_section_data (s)->local_dynrel);
|
| 4097 |
|
|
p != NULL;
|
| 4098 |
|
|
p = p->next)
|
| 4099 |
|
|
{
|
| 4100 |
|
|
if (!bfd_is_abs_section (p->sec)
|
| 4101 |
|
|
&& bfd_is_abs_section (p->sec->output_section))
|
| 4102 |
|
|
{
|
| 4103 |
|
|
/* Input section has been discarded, either because
|
| 4104 |
|
|
it is a copy of a linkonce section or due to
|
| 4105 |
|
|
linker script /DISCARD/, so we'll be discarding
|
| 4106 |
|
|
the relocs too. */
|
| 4107 |
|
|
}
|
| 4108 |
|
|
else if (p->count != 0)
|
| 4109 |
|
|
{
|
| 4110 |
|
|
srel = elf_section_data (p->sec)->sreloc;
|
| 4111 |
|
|
srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
|
| 4112 |
|
|
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
|
| 4113 |
|
|
info->flags |= DF_TEXTREL;
|
| 4114 |
|
|
}
|
| 4115 |
|
|
}
|
| 4116 |
|
|
}
|
| 4117 |
|
|
|
| 4118 |
|
|
local_got = elf_local_got_refcounts (ibfd);
|
| 4119 |
|
|
if (!local_got)
|
| 4120 |
|
|
continue;
|
| 4121 |
|
|
|
| 4122 |
|
|
symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
| 4123 |
|
|
locsymcount = symtab_hdr->sh_info;
|
| 4124 |
|
|
end_local_got = local_got + locsymcount;
|
| 4125 |
|
|
s = htab->sgot;
|
| 4126 |
|
|
srel = htab->srelgot;
|
| 4127 |
|
|
for (; local_got < end_local_got; ++local_got)
|
| 4128 |
|
|
{
|
| 4129 |
|
|
if (*local_got > 0)
|
| 4130 |
|
|
{
|
| 4131 |
|
|
*local_got = s->_raw_size;
|
| 4132 |
|
|
s->_raw_size += 8;
|
| 4133 |
|
|
if (info->shared)
|
| 4134 |
|
|
srel->_raw_size += sizeof (Elf64_External_Rela);
|
| 4135 |
|
|
}
|
| 4136 |
|
|
else
|
| 4137 |
|
|
*local_got = (bfd_vma) -1;
|
| 4138 |
|
|
}
|
| 4139 |
|
|
}
|
| 4140 |
|
|
|
| 4141 |
|
|
if (!edit_opd (output_bfd, info))
|
| 4142 |
|
|
return false;
|
| 4143 |
|
|
|
| 4144 |
|
|
/* Allocate global sym .plt and .got entries, and space for global
|
| 4145 |
|
|
sym dynamic relocs. */
|
| 4146 |
|
|
elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
|
| 4147 |
|
|
|
| 4148 |
|
|
/* We now have determined the sizes of the various dynamic sections.
|
| 4149 |
|
|
Allocate memory for them. */
|
| 4150 |
|
|
relocs = false;
|
| 4151 |
|
|
for (s = dynobj->sections; s != NULL; s = s->next)
|
| 4152 |
|
|
{
|
| 4153 |
|
|
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
| 4154 |
|
|
continue;
|
| 4155 |
|
|
|
| 4156 |
|
|
if (s == htab->sbrlt || s == htab->srelbrlt)
|
| 4157 |
|
|
/* These haven't been allocated yet; don't strip. */
|
| 4158 |
|
|
continue;
|
| 4159 |
|
|
else if (s == htab->splt
|
| 4160 |
|
|
|| s == htab->sgot
|
| 4161 |
|
|
|| s == htab->sglink)
|
| 4162 |
|
|
{
|
| 4163 |
|
|
/* Strip this section if we don't need it; see the
|
| 4164 |
|
|
comment below. */
|
| 4165 |
|
|
}
|
| 4166 |
|
|
else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
|
| 4167 |
|
|
{
|
| 4168 |
|
|
if (s->_raw_size == 0)
|
| 4169 |
|
|
{
|
| 4170 |
|
|
/* If we don't need this section, strip it from the
|
| 4171 |
|
|
output file. This is mostly to handle .rela.bss and
|
| 4172 |
|
|
.rela.plt. We must create both sections in
|
| 4173 |
|
|
create_dynamic_sections, because they must be created
|
| 4174 |
|
|
before the linker maps input sections to output
|
| 4175 |
|
|
sections. The linker does that before
|
| 4176 |
|
|
adjust_dynamic_symbol is called, and it is that
|
| 4177 |
|
|
function which decides whether anything needs to go
|
| 4178 |
|
|
into these sections. */
|
| 4179 |
|
|
}
|
| 4180 |
|
|
else
|
| 4181 |
|
|
{
|
| 4182 |
|
|
if (s != htab->srelplt)
|
| 4183 |
|
|
relocs = true;
|
| 4184 |
|
|
|
| 4185 |
|
|
/* We use the reloc_count field as a counter if we need
|
| 4186 |
|
|
to copy relocs into the output file. */
|
| 4187 |
|
|
s->reloc_count = 0;
|
| 4188 |
|
|
}
|
| 4189 |
|
|
}
|
| 4190 |
|
|
else
|
| 4191 |
|
|
{
|
| 4192 |
|
|
/* It's not one of our sections, so don't allocate space. */
|
| 4193 |
|
|
continue;
|
| 4194 |
|
|
}
|
| 4195 |
|
|
|
| 4196 |
|
|
if (s->_raw_size == 0)
|
| 4197 |
|
|
{
|
| 4198 |
|
|
_bfd_strip_section_from_output (info, s);
|
| 4199 |
|
|
continue;
|
| 4200 |
|
|
}
|
| 4201 |
|
|
|
| 4202 |
|
|
/* .plt is in the bss section. We don't initialise it. */
|
| 4203 |
|
|
if ((s->flags & SEC_LOAD) == 0)
|
| 4204 |
|
|
continue;
|
| 4205 |
|
|
|
| 4206 |
|
|
/* Allocate memory for the section contents. We use bfd_zalloc
|
| 4207 |
|
|
here in case unused entries are not reclaimed before the
|
| 4208 |
|
|
section's contents are written out. This should not happen,
|
| 4209 |
|
|
but this way if it does, we get a R_PPC64_NONE reloc instead
|
| 4210 |
|
|
of garbage. */
|
| 4211 |
|
|
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
|
| 4212 |
|
|
if (s->contents == NULL)
|
| 4213 |
|
|
return false;
|
| 4214 |
|
|
}
|
| 4215 |
|
|
|
| 4216 |
|
|
if (htab->elf.dynamic_sections_created)
|
| 4217 |
|
|
{
|
| 4218 |
|
|
/* Add some entries to the .dynamic section. We fill in the
|
| 4219 |
|
|
values later, in ppc64_elf_finish_dynamic_sections, but we
|
| 4220 |
|
|
must add the entries now so that we get the correct size for
|
| 4221 |
|
|
the .dynamic section. The DT_DEBUG entry is filled in by the
|
| 4222 |
|
|
dynamic linker and used by the debugger. */
|
| 4223 |
|
|
#define add_dynamic_entry(TAG, VAL) \
|
| 4224 |
|
|
bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
|
| 4225 |
|
|
|
| 4226 |
|
|
if (!info->shared)
|
| 4227 |
|
|
{
|
| 4228 |
|
|
if (!add_dynamic_entry (DT_DEBUG, 0))
|
| 4229 |
|
|
return false;
|
| 4230 |
|
|
}
|
| 4231 |
|
|
|
| 4232 |
|
|
if (htab->splt != NULL && htab->splt->_raw_size != 0)
|
| 4233 |
|
|
{
|
| 4234 |
|
|
if (!add_dynamic_entry (DT_PLTGOT, 0)
|
| 4235 |
|
|
|| !add_dynamic_entry (DT_PLTRELSZ, 0)
|
| 4236 |
|
|
|| !add_dynamic_entry (DT_PLTREL, DT_RELA)
|
| 4237 |
|
|
|| !add_dynamic_entry (DT_JMPREL, 0)
|
| 4238 |
|
|
|| !add_dynamic_entry (DT_PPC64_GLINK, 0))
|
| 4239 |
|
|
return false;
|
| 4240 |
|
|
}
|
| 4241 |
|
|
|
| 4242 |
|
|
if (NO_OPD_RELOCS)
|
| 4243 |
|
|
{
|
| 4244 |
|
|
if (!add_dynamic_entry (DT_PPC64_OPD, 0)
|
| 4245 |
|
|
|| !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
|
| 4246 |
|
|
return false;
|
| 4247 |
|
|
}
|
| 4248 |
|
|
|
| 4249 |
|
|
if (relocs)
|
| 4250 |
|
|
{
|
| 4251 |
|
|
if (!add_dynamic_entry (DT_RELA, 0)
|
| 4252 |
|
|
|| !add_dynamic_entry (DT_RELASZ, 0)
|
| 4253 |
|
|
|| !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
|
| 4254 |
|
|
return false;
|
| 4255 |
|
|
|
| 4256 |
|
|
/* If any dynamic relocs apply to a read-only section,
|
| 4257 |
|
|
then we need a DT_TEXTREL entry. */
|
| 4258 |
|
|
if ((info->flags & DF_TEXTREL) == 0)
|
| 4259 |
|
|
elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
|
| 4260 |
|
|
(PTR) info);
|
| 4261 |
|
|
|
| 4262 |
|
|
if ((info->flags & DF_TEXTREL) != 0)
|
| 4263 |
|
|
{
|
| 4264 |
|
|
if (!add_dynamic_entry (DT_TEXTREL, 0))
|
| 4265 |
|
|
return false;
|
| 4266 |
|
|
}
|
| 4267 |
|
|
}
|
| 4268 |
|
|
}
|
| 4269 |
|
|
#undef add_dynamic_entry
|
| 4270 |
|
|
|
| 4271 |
|
|
return true;
|
| 4272 |
|
|
}
|
| 4273 |
|
|
|
| 4274 |
|
|
/* Determine the type of stub needed, if any, for a call. */
|
| 4275 |
|
|
|
| 4276 |
|
|
static INLINE enum ppc_stub_type
|
| 4277 |
|
|
ppc_type_of_stub (input_sec, rel, hash, destination)
|
| 4278 |
|
|
asection *input_sec;
|
| 4279 |
|
|
const Elf_Internal_Rela *rel;
|
| 4280 |
|
|
struct ppc_link_hash_entry **hash;
|
| 4281 |
|
|
bfd_vma destination;
|
| 4282 |
|
|
{
|
| 4283 |
|
|
struct ppc_link_hash_entry *h = *hash;
|
| 4284 |
|
|
bfd_vma location;
|
| 4285 |
|
|
bfd_vma branch_offset;
|
| 4286 |
|
|
bfd_vma max_branch_offset;
|
| 4287 |
|
|
unsigned int r_type;
|
| 4288 |
|
|
|
| 4289 |
|
|
if (h != NULL)
|
| 4290 |
|
|
{
|
| 4291 |
|
|
if (h->oh != NULL
|
| 4292 |
|
|
&& h->oh->plt.offset != (bfd_vma) -1
|
| 4293 |
|
|
&& h->oh->dynindx != -1)
|
| 4294 |
|
|
{
|
| 4295 |
|
|
*hash = (struct ppc_link_hash_entry *) h->oh;
|
| 4296 |
|
|
return ppc_stub_plt_call;
|
| 4297 |
|
|
}
|
| 4298 |
|
|
|
| 4299 |
|
|
if (h->elf.root.type == bfd_link_hash_undefweak
|
| 4300 |
|
|
|| h->elf.root.type == bfd_link_hash_undefined)
|
| 4301 |
|
|
return ppc_stub_none;
|
| 4302 |
|
|
}
|
| 4303 |
|
|
|
| 4304 |
|
|
/* Determine where the call point is. */
|
| 4305 |
|
|
location = (input_sec->output_offset
|
| 4306 |
|
|
+ input_sec->output_section->vma
|
| 4307 |
|
|
+ rel->r_offset);
|
| 4308 |
|
|
|
| 4309 |
|
|
branch_offset = destination - location;
|
| 4310 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 4311 |
|
|
|
| 4312 |
|
|
/* Determine if a long branch stub is needed. */
|
| 4313 |
|
|
max_branch_offset = 1 << 25;
|
| 4314 |
|
|
if (r_type != (unsigned int) R_PPC64_REL24)
|
| 4315 |
|
|
max_branch_offset = 1 << 15;
|
| 4316 |
|
|
|
| 4317 |
|
|
if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
|
| 4318 |
|
|
/* We need a stub. Figure out whether a long_branch or plt_branch
|
| 4319 |
|
|
is needed later. */
|
| 4320 |
|
|
return ppc_stub_long_branch;
|
| 4321 |
|
|
|
| 4322 |
|
|
return ppc_stub_none;
|
| 4323 |
|
|
}
|
| 4324 |
|
|
|
| 4325 |
|
|
/* Build a .plt call stub. */
|
| 4326 |
|
|
|
| 4327 |
|
|
static bfd_byte *
|
| 4328 |
|
|
build_plt_stub (obfd, p, offset, glink)
|
| 4329 |
|
|
bfd *obfd;
|
| 4330 |
|
|
bfd_byte *p;
|
| 4331 |
|
|
int offset;
|
| 4332 |
|
|
int glink;
|
| 4333 |
|
|
{
|
| 4334 |
|
|
#define PPC_LO(v) ((v) & 0xffff)
|
| 4335 |
|
|
#define PPC_HI(v) (((v) >> 16) & 0xffff)
|
| 4336 |
|
|
#define PPC_HA(v) PPC_HI ((v) + 0x8000)
|
| 4337 |
|
|
|
| 4338 |
|
|
if (glink)
|
| 4339 |
|
|
bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
|
| 4340 |
|
|
bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
|
| 4341 |
|
|
if (!glink)
|
| 4342 |
|
|
bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
|
| 4343 |
|
|
bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
|
| 4344 |
|
|
if (PPC_HA (offset + 8) != PPC_HA (offset))
|
| 4345 |
|
|
bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
|
| 4346 |
|
|
offset += 8;
|
| 4347 |
|
|
bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
|
| 4348 |
|
|
if (PPC_HA (offset + 8) != PPC_HA (offset))
|
| 4349 |
|
|
bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
|
| 4350 |
|
|
offset += 8;
|
| 4351 |
|
|
bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
|
| 4352 |
|
|
bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
|
| 4353 |
|
|
bfd_put_32 (obfd, BCTR, p), p += 4;
|
| 4354 |
|
|
return p;
|
| 4355 |
|
|
}
|
| 4356 |
|
|
|
| 4357 |
|
|
static boolean
|
| 4358 |
|
|
ppc_build_one_stub (gen_entry, in_arg)
|
| 4359 |
|
|
struct bfd_hash_entry *gen_entry;
|
| 4360 |
|
|
PTR in_arg;
|
| 4361 |
|
|
{
|
| 4362 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 4363 |
|
|
struct ppc_branch_hash_entry *br_entry;
|
| 4364 |
|
|
struct bfd_link_info *info;
|
| 4365 |
|
|
struct ppc_link_hash_table *htab;
|
| 4366 |
|
|
asection *stub_sec;
|
| 4367 |
|
|
bfd *stub_bfd;
|
| 4368 |
|
|
bfd_byte *loc;
|
| 4369 |
|
|
bfd_byte *p;
|
| 4370 |
|
|
unsigned int indx;
|
| 4371 |
|
|
bfd_vma off;
|
| 4372 |
|
|
int size;
|
| 4373 |
|
|
|
| 4374 |
|
|
/* Massage our args to the form they really have. */
|
| 4375 |
|
|
stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
|
| 4376 |
|
|
info = (struct bfd_link_info *) in_arg;
|
| 4377 |
|
|
|
| 4378 |
|
|
htab = ppc_hash_table (info);
|
| 4379 |
|
|
stub_sec = stub_entry->stub_sec;
|
| 4380 |
|
|
|
| 4381 |
|
|
/* Make a note of the offset within the stubs for this entry. */
|
| 4382 |
|
|
stub_entry->stub_offset = stub_sec->_cooked_size;
|
| 4383 |
|
|
loc = stub_sec->contents + stub_entry->stub_offset;
|
| 4384 |
|
|
|
| 4385 |
|
|
stub_bfd = stub_sec->owner;
|
| 4386 |
|
|
|
| 4387 |
|
|
switch (stub_entry->stub_type)
|
| 4388 |
|
|
{
|
| 4389 |
|
|
case ppc_stub_long_branch:
|
| 4390 |
|
|
/* Branches are relative. This is where we are going to. */
|
| 4391 |
|
|
off = (stub_entry->target_value
|
| 4392 |
|
|
+ stub_entry->target_section->output_offset
|
| 4393 |
|
|
+ stub_entry->target_section->output_section->vma);
|
| 4394 |
|
|
|
| 4395 |
|
|
/* And this is where we are coming from. */
|
| 4396 |
|
|
off -= (stub_entry->stub_offset
|
| 4397 |
|
|
+ stub_sec->output_offset
|
| 4398 |
|
|
+ stub_sec->output_section->vma);
|
| 4399 |
|
|
|
| 4400 |
|
|
BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
|
| 4401 |
|
|
|
| 4402 |
|
|
bfd_put_32 (stub_bfd, (bfd_vma) B_DOT | (off & 0x3fffffc), loc);
|
| 4403 |
|
|
size = 4;
|
| 4404 |
|
|
break;
|
| 4405 |
|
|
|
| 4406 |
|
|
case ppc_stub_plt_branch:
|
| 4407 |
|
|
br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
|
| 4408 |
|
|
stub_entry->root.string + 9,
|
| 4409 |
|
|
false, false);
|
| 4410 |
|
|
if (br_entry == NULL)
|
| 4411 |
|
|
{
|
| 4412 |
|
|
(*_bfd_error_handler) (_("can't find branch stub `%s'"),
|
| 4413 |
|
|
stub_entry->root.string + 9);
|
| 4414 |
|
|
htab->stub_error = true;
|
| 4415 |
|
|
return false;
|
| 4416 |
|
|
}
|
| 4417 |
|
|
|
| 4418 |
|
|
off = (stub_entry->target_value
|
| 4419 |
|
|
+ stub_entry->target_section->output_offset
|
| 4420 |
|
|
+ stub_entry->target_section->output_section->vma);
|
| 4421 |
|
|
|
| 4422 |
|
|
bfd_put_64 (htab->sbrlt->owner, off,
|
| 4423 |
|
|
htab->sbrlt->contents + br_entry->offset);
|
| 4424 |
|
|
|
| 4425 |
|
|
if (info->shared)
|
| 4426 |
|
|
{
|
| 4427 |
|
|
/* Create a reloc for the branch lookup table entry. */
|
| 4428 |
|
|
Elf_Internal_Rela rela;
|
| 4429 |
|
|
Elf64_External_Rela *r;
|
| 4430 |
|
|
|
| 4431 |
|
|
rela.r_offset = (br_entry->offset
|
| 4432 |
|
|
+ htab->sbrlt->output_offset
|
| 4433 |
|
|
+ htab->sbrlt->output_section->vma);
|
| 4434 |
|
|
rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
|
| 4435 |
|
|
rela.r_addend = off;
|
| 4436 |
|
|
|
| 4437 |
|
|
r = (Elf64_External_Rela *) htab->srelbrlt->contents;
|
| 4438 |
|
|
r += htab->srelbrlt->reloc_count++;
|
| 4439 |
|
|
bfd_elf64_swap_reloca_out (htab->srelbrlt->owner, &rela, r);
|
| 4440 |
|
|
}
|
| 4441 |
|
|
|
| 4442 |
|
|
off = (br_entry->offset
|
| 4443 |
|
|
+ htab->sbrlt->output_offset
|
| 4444 |
|
|
+ htab->sbrlt->output_section->vma
|
| 4445 |
|
|
- elf_gp (htab->sbrlt->output_section->owner)
|
| 4446 |
|
|
- TOC_BASE_OFF);
|
| 4447 |
|
|
|
| 4448 |
|
|
if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
|
| 4449 |
|
|
{
|
| 4450 |
|
|
(*_bfd_error_handler)
|
| 4451 |
|
|
(_("linkage table error against `%s'"),
|
| 4452 |
|
|
stub_entry->root.string);
|
| 4453 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 4454 |
|
|
htab->stub_error = true;
|
| 4455 |
|
|
return false;
|
| 4456 |
|
|
}
|
| 4457 |
|
|
|
| 4458 |
|
|
indx = off;
|
| 4459 |
|
|
bfd_put_32 (stub_bfd, (bfd_vma) ADDIS_R12_R2 | PPC_HA (indx), loc);
|
| 4460 |
|
|
bfd_put_32 (stub_bfd, (bfd_vma) LD_R11_0R12 | PPC_LO (indx), loc + 4);
|
| 4461 |
|
|
bfd_put_32 (stub_bfd, (bfd_vma) MTCTR_R11, loc + 8);
|
| 4462 |
|
|
bfd_put_32 (stub_bfd, (bfd_vma) BCTR, loc + 12);
|
| 4463 |
|
|
size = 16;
|
| 4464 |
|
|
break;
|
| 4465 |
|
|
|
| 4466 |
|
|
case ppc_stub_plt_call:
|
| 4467 |
|
|
/* Build the .glink lazy link call stub. */
|
| 4468 |
|
|
p = htab->sglink->contents + htab->sglink->_cooked_size;
|
| 4469 |
|
|
indx = htab->sglink->reloc_count;
|
| 4470 |
|
|
if (indx < 0x8000)
|
| 4471 |
|
|
{
|
| 4472 |
|
|
bfd_put_32 (htab->sglink->owner, LI_R0_0 | indx, p);
|
| 4473 |
|
|
p += 4;
|
| 4474 |
|
|
}
|
| 4475 |
|
|
else
|
| 4476 |
|
|
{
|
| 4477 |
|
|
bfd_put_32 (htab->sglink->owner, LIS_R0_0 | PPC_HI (indx), p);
|
| 4478 |
|
|
p += 4;
|
| 4479 |
|
|
bfd_put_32 (htab->sglink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
|
| 4480 |
|
|
p += 4;
|
| 4481 |
|
|
}
|
| 4482 |
|
|
bfd_put_32 (htab->sglink->owner,
|
| 4483 |
|
|
B_DOT | ((htab->sglink->contents - p) & 0x3fffffc), p);
|
| 4484 |
|
|
p += 4;
|
| 4485 |
|
|
htab->sglink->_cooked_size = p - htab->sglink->contents;
|
| 4486 |
|
|
htab->sglink->reloc_count += 1;
|
| 4487 |
|
|
|
| 4488 |
|
|
/* Do the best we can for shared libraries built without
|
| 4489 |
|
|
exporting ".foo" for each "foo". This can happen when symbol
|
| 4490 |
|
|
versioning scripts strip all bar a subset of symbols. */
|
| 4491 |
|
|
if (stub_entry->h->oh->root.type != bfd_link_hash_defined
|
| 4492 |
|
|
&& stub_entry->h->oh->root.type != bfd_link_hash_defweak)
|
| 4493 |
|
|
{
|
| 4494 |
|
|
/* Point the symbol at the stub. There may be multiple stubs,
|
| 4495 |
|
|
we don't really care; The main thing is to make this sym
|
| 4496 |
|
|
defined somewhere. */
|
| 4497 |
|
|
stub_entry->h->oh->root.type = bfd_link_hash_defined;
|
| 4498 |
|
|
stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
|
| 4499 |
|
|
stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
|
| 4500 |
|
|
}
|
| 4501 |
|
|
|
| 4502 |
|
|
/* Now build the stub. */
|
| 4503 |
|
|
off = stub_entry->h->elf.plt.offset;
|
| 4504 |
|
|
if (off >= (bfd_vma) -2)
|
| 4505 |
|
|
abort ();
|
| 4506 |
|
|
|
| 4507 |
|
|
off &= ~ (bfd_vma) 1;
|
| 4508 |
|
|
off += (htab->splt->output_offset
|
| 4509 |
|
|
+ htab->splt->output_section->vma
|
| 4510 |
|
|
- elf_gp (htab->splt->output_section->owner)
|
| 4511 |
|
|
- TOC_BASE_OFF);
|
| 4512 |
|
|
|
| 4513 |
|
|
if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
|
| 4514 |
|
|
{
|
| 4515 |
|
|
(*_bfd_error_handler)
|
| 4516 |
|
|
(_("linkage table error against `%s'"),
|
| 4517 |
|
|
stub_entry->h->elf.root.root.string);
|
| 4518 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 4519 |
|
|
htab->stub_error = true;
|
| 4520 |
|
|
return false;
|
| 4521 |
|
|
}
|
| 4522 |
|
|
|
| 4523 |
|
|
p = build_plt_stub (stub_bfd, loc, (int) off, 0);
|
| 4524 |
|
|
size = p - loc;
|
| 4525 |
|
|
break;
|
| 4526 |
|
|
|
| 4527 |
|
|
default:
|
| 4528 |
|
|
BFD_FAIL ();
|
| 4529 |
|
|
return false;
|
| 4530 |
|
|
}
|
| 4531 |
|
|
|
| 4532 |
|
|
stub_sec->_cooked_size += size;
|
| 4533 |
|
|
return true;
|
| 4534 |
|
|
}
|
| 4535 |
|
|
|
| 4536 |
|
|
/* As above, but don't actually build the stub. Just bump offset so
|
| 4537 |
|
|
we know stub section sizes, and select plt_branch stubs where
|
| 4538 |
|
|
long_branch stubs won't do. */
|
| 4539 |
|
|
|
| 4540 |
|
|
static boolean
|
| 4541 |
|
|
ppc_size_one_stub (gen_entry, in_arg)
|
| 4542 |
|
|
struct bfd_hash_entry *gen_entry;
|
| 4543 |
|
|
PTR in_arg;
|
| 4544 |
|
|
{
|
| 4545 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 4546 |
|
|
struct ppc_link_hash_table *htab;
|
| 4547 |
|
|
bfd_vma off;
|
| 4548 |
|
|
int size;
|
| 4549 |
|
|
|
| 4550 |
|
|
/* Massage our args to the form they really have. */
|
| 4551 |
|
|
stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
|
| 4552 |
|
|
htab = (struct ppc_link_hash_table *) in_arg;
|
| 4553 |
|
|
|
| 4554 |
|
|
if (stub_entry->stub_type == ppc_stub_plt_call)
|
| 4555 |
|
|
{
|
| 4556 |
|
|
off = stub_entry->h->elf.plt.offset & ~(bfd_vma) 1;
|
| 4557 |
|
|
off += (htab->splt->output_offset
|
| 4558 |
|
|
+ htab->splt->output_section->vma
|
| 4559 |
|
|
- elf_gp (htab->splt->output_section->owner)
|
| 4560 |
|
|
- TOC_BASE_OFF);
|
| 4561 |
|
|
|
| 4562 |
|
|
size = 28;
|
| 4563 |
|
|
if (PPC_HA ((int) off + 16) != PPC_HA ((int) off))
|
| 4564 |
|
|
size += 4;
|
| 4565 |
|
|
}
|
| 4566 |
|
|
else
|
| 4567 |
|
|
{
|
| 4568 |
|
|
/* ppc_stub_long_branch or ppc_stub_plt_branch. */
|
| 4569 |
|
|
stub_entry->stub_type = ppc_stub_long_branch;
|
| 4570 |
|
|
size = 4;
|
| 4571 |
|
|
|
| 4572 |
|
|
off = (stub_entry->target_value
|
| 4573 |
|
|
+ stub_entry->target_section->output_offset
|
| 4574 |
|
|
+ stub_entry->target_section->output_section->vma);
|
| 4575 |
|
|
off -= (stub_entry->stub_sec->_raw_size
|
| 4576 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 4577 |
|
|
+ stub_entry->stub_sec->output_section->vma);
|
| 4578 |
|
|
|
| 4579 |
|
|
if (off + (1 << 25) >= (bfd_vma) (1 << 26))
|
| 4580 |
|
|
{
|
| 4581 |
|
|
struct ppc_branch_hash_entry *br_entry;
|
| 4582 |
|
|
|
| 4583 |
|
|
br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
|
| 4584 |
|
|
stub_entry->root.string + 9,
|
| 4585 |
|
|
true, false);
|
| 4586 |
|
|
if (br_entry == NULL)
|
| 4587 |
|
|
{
|
| 4588 |
|
|
(*_bfd_error_handler) (_("can't build branch stub `%s'"),
|
| 4589 |
|
|
stub_entry->root.string + 9);
|
| 4590 |
|
|
htab->stub_error = true;
|
| 4591 |
|
|
return false;
|
| 4592 |
|
|
}
|
| 4593 |
|
|
|
| 4594 |
|
|
if (br_entry->iter != htab->stub_iteration)
|
| 4595 |
|
|
{
|
| 4596 |
|
|
br_entry->iter = htab->stub_iteration;
|
| 4597 |
|
|
br_entry->offset = htab->sbrlt->_raw_size;
|
| 4598 |
|
|
htab->sbrlt->_raw_size += 8;
|
| 4599 |
|
|
}
|
| 4600 |
|
|
stub_entry->stub_type = ppc_stub_plt_branch;
|
| 4601 |
|
|
size = 16;
|
| 4602 |
|
|
}
|
| 4603 |
|
|
}
|
| 4604 |
|
|
|
| 4605 |
|
|
stub_entry->stub_sec->_raw_size += size;
|
| 4606 |
|
|
return true;
|
| 4607 |
|
|
}
|
| 4608 |
|
|
|
| 4609 |
|
|
/* Set up various things so that we can make a list of input sections
|
| 4610 |
|
|
for each output section included in the link. Returns -1 on error,
|
| 4611 |
|
|
|
| 4612 |
|
|
|
| 4613 |
|
|
int
|
| 4614 |
|
|
ppc64_elf_setup_section_lists (output_bfd, info)
|
| 4615 |
|
|
bfd *output_bfd;
|
| 4616 |
|
|
struct bfd_link_info *info;
|
| 4617 |
|
|
{
|
| 4618 |
|
|
bfd *input_bfd;
|
| 4619 |
|
|
int top_id, top_index;
|
| 4620 |
|
|
asection *section;
|
| 4621 |
|
|
asection **input_list, **list;
|
| 4622 |
|
|
bfd_size_type amt;
|
| 4623 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 4624 |
|
|
|
| 4625 |
|
|
if (htab->elf.root.creator->flavour != bfd_target_elf_flavour
|
| 4626 |
|
|
|| htab->sbrlt == NULL)
|
| 4627 |
|
|
return 0;
|
| 4628 |
|
|
|
| 4629 |
|
|
/* Find the top input section id. */
|
| 4630 |
|
|
for (input_bfd = info->input_bfds, top_id = 0;
|
| 4631 |
|
|
input_bfd != NULL;
|
| 4632 |
|
|
input_bfd = input_bfd->link_next)
|
| 4633 |
|
|
{
|
| 4634 |
|
|
for (section = input_bfd->sections;
|
| 4635 |
|
|
section != NULL;
|
| 4636 |
|
|
section = section->next)
|
| 4637 |
|
|
{
|
| 4638 |
|
|
if (top_id < section->id)
|
| 4639 |
|
|
top_id = section->id;
|
| 4640 |
|
|
}
|
| 4641 |
|
|
}
|
| 4642 |
|
|
|
| 4643 |
|
|
amt = sizeof (struct map_stub) * (top_id + 1);
|
| 4644 |
|
|
htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
|
| 4645 |
|
|
if (htab->stub_group == NULL)
|
| 4646 |
|
|
return -1;
|
| 4647 |
|
|
|
| 4648 |
|
|
/* We can't use output_bfd->section_count here to find the top output
|
| 4649 |
|
|
section index as some sections may have been removed, and
|
| 4650 |
|
|
_bfd_strip_section_from_output doesn't renumber the indices. */
|
| 4651 |
|
|
for (section = output_bfd->sections, top_index = 0;
|
| 4652 |
|
|
section != NULL;
|
| 4653 |
|
|
section = section->next)
|
| 4654 |
|
|
{
|
| 4655 |
|
|
if (top_index < section->index)
|
| 4656 |
|
|
top_index = section->index;
|
| 4657 |
|
|
}
|
| 4658 |
|
|
|
| 4659 |
|
|
htab->top_index = top_index;
|
| 4660 |
|
|
amt = sizeof (asection *) * (top_index + 1);
|
| 4661 |
|
|
input_list = (asection **) bfd_malloc (amt);
|
| 4662 |
|
|
htab->input_list = input_list;
|
| 4663 |
|
|
if (input_list == NULL)
|
| 4664 |
|
|
return -1;
|
| 4665 |
|
|
|
| 4666 |
|
|
/* For sections we aren't interested in, mark their entries with a
|
| 4667 |
|
|
value we can check later. */
|
| 4668 |
|
|
list = input_list + top_index;
|
| 4669 |
|
|
do
|
| 4670 |
|
|
*list = bfd_abs_section_ptr;
|
| 4671 |
|
|
while (list-- != input_list);
|
| 4672 |
|
|
|
| 4673 |
|
|
for (section = output_bfd->sections;
|
| 4674 |
|
|
section != NULL;
|
| 4675 |
|
|
section = section->next)
|
| 4676 |
|
|
{
|
| 4677 |
|
|
if ((section->flags & SEC_CODE) != 0)
|
| 4678 |
|
|
input_list[section->index] = NULL;
|
| 4679 |
|
|
}
|
| 4680 |
|
|
|
| 4681 |
|
|
return 1;
|
| 4682 |
|
|
}
|
| 4683 |
|
|
|
| 4684 |
|
|
/* The linker repeatedly calls this function for each input section,
|
| 4685 |
|
|
in the order that input sections are linked into output sections.
|
| 4686 |
|
|
Build lists of input sections to determine groupings between which
|
| 4687 |
|
|
we may insert linker stubs. */
|
| 4688 |
|
|
|
| 4689 |
|
|
void
|
| 4690 |
|
|
ppc64_elf_next_input_section (info, isec)
|
| 4691 |
|
|
struct bfd_link_info *info;
|
| 4692 |
|
|
asection *isec;
|
| 4693 |
|
|
{
|
| 4694 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 4695 |
|
|
|
| 4696 |
|
|
if (isec->output_section->index <= htab->top_index)
|
| 4697 |
|
|
{
|
| 4698 |
|
|
asection **list = htab->input_list + isec->output_section->index;
|
| 4699 |
|
|
if (*list != bfd_abs_section_ptr)
|
| 4700 |
|
|
{
|
| 4701 |
|
|
/* Steal the link_sec pointer for our list. */
|
| 4702 |
|
|
#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
|
| 4703 |
|
|
/* This happens to make the list in reverse order,
|
| 4704 |
|
|
which is what we want. */
|
| 4705 |
|
|
PREV_SEC (isec) = *list;
|
| 4706 |
|
|
*list = isec;
|
| 4707 |
|
|
}
|
| 4708 |
|
|
}
|
| 4709 |
|
|
}
|
| 4710 |
|
|
|
| 4711 |
|
|
/* See whether we can group stub sections together. Grouping stub
|
| 4712 |
|
|
sections may result in fewer stubs. More importantly, we need to
|
| 4713 |
|
|
put all .init* and .fini* stubs at the beginning of the .init or
|
| 4714 |
|
|
.fini output sections respectively, because glibc splits the
|
| 4715 |
|
|
_init and _fini functions into multiple parts. Putting a stub in
|
| 4716 |
|
|
the middle of a function is not a good idea. */
|
| 4717 |
|
|
|
| 4718 |
|
|
static void
|
| 4719 |
|
|
group_sections (htab, stub_group_size, stubs_always_before_branch)
|
| 4720 |
|
|
struct ppc_link_hash_table *htab;
|
| 4721 |
|
|
bfd_size_type stub_group_size;
|
| 4722 |
|
|
boolean stubs_always_before_branch;
|
| 4723 |
|
|
{
|
| 4724 |
|
|
asection **list = htab->input_list + htab->top_index;
|
| 4725 |
|
|
do
|
| 4726 |
|
|
{
|
| 4727 |
|
|
asection *tail = *list;
|
| 4728 |
|
|
if (tail == bfd_abs_section_ptr)
|
| 4729 |
|
|
continue;
|
| 4730 |
|
|
while (tail != NULL)
|
| 4731 |
|
|
{
|
| 4732 |
|
|
asection *curr;
|
| 4733 |
|
|
asection *prev;
|
| 4734 |
|
|
bfd_size_type total;
|
| 4735 |
|
|
|
| 4736 |
|
|
curr = tail;
|
| 4737 |
|
|
if (tail->_cooked_size)
|
| 4738 |
|
|
total = tail->_cooked_size;
|
| 4739 |
|
|
else
|
| 4740 |
|
|
total = tail->_raw_size;
|
| 4741 |
|
|
while ((prev = PREV_SEC (curr)) != NULL
|
| 4742 |
|
|
&& ((total += curr->output_offset - prev->output_offset)
|
| 4743 |
|
|
< stub_group_size))
|
| 4744 |
|
|
curr = prev;
|
| 4745 |
|
|
|
| 4746 |
|
|
/* OK, the size from the start of CURR to the end is less
|
| 4747 |
|
|
than stub_group_size and thus can be handled by one stub
|
| 4748 |
|
|
section. (or the tail section is itself larger than
|
| 4749 |
|
|
stub_group_size, in which case we may be toast.) We
|
| 4750 |
|
|
should really be keeping track of the total size of stubs
|
| 4751 |
|
|
added here, as stubs contribute to the final output
|
| 4752 |
|
|
section size. That's a little tricky, and this way will
|
| 4753 |
|
|
only break if stubs added make the total size more than
|
| 4754 |
|
|
2^25, ie. for the default stub_group_size, if stubs total
|
| 4755 |
|
|
more than 2834432 bytes, or over 100000 plt call stubs. */
|
| 4756 |
|
|
do
|
| 4757 |
|
|
{
|
| 4758 |
|
|
prev = PREV_SEC (tail);
|
| 4759 |
|
|
/* Set up this stub group. */
|
| 4760 |
|
|
htab->stub_group[tail->id].link_sec = curr;
|
| 4761 |
|
|
}
|
| 4762 |
|
|
while (tail != curr && (tail = prev) != NULL);
|
| 4763 |
|
|
|
| 4764 |
|
|
/* But wait, there's more! Input sections up to stub_group_size
|
| 4765 |
|
|
bytes before the stub section can be handled by it too. */
|
| 4766 |
|
|
if (!stubs_always_before_branch)
|
| 4767 |
|
|
{
|
| 4768 |
|
|
total = 0;
|
| 4769 |
|
|
while (prev != NULL
|
| 4770 |
|
|
&& ((total += tail->output_offset - prev->output_offset)
|
| 4771 |
|
|
< stub_group_size))
|
| 4772 |
|
|
{
|
| 4773 |
|
|
tail = prev;
|
| 4774 |
|
|
prev = PREV_SEC (tail);
|
| 4775 |
|
|
htab->stub_group[tail->id].link_sec = curr;
|
| 4776 |
|
|
}
|
| 4777 |
|
|
}
|
| 4778 |
|
|
tail = prev;
|
| 4779 |
|
|
}
|
| 4780 |
|
|
}
|
| 4781 |
|
|
while (list-- != htab->input_list);
|
| 4782 |
|
|
free (htab->input_list);
|
| 4783 |
|
|
#undef PREV_SEC
|
| 4784 |
|
|
}
|
| 4785 |
|
|
|
| 4786 |
|
|
/* Determine and set the size of the stub section for a final link.
|
| 4787 |
|
|
|
| 4788 |
|
|
The basic idea here is to examine all the relocations looking for
|
| 4789 |
|
|
PC-relative calls to a target that is unreachable with a "bl"
|
| 4790 |
|
|
instruction. */
|
| 4791 |
|
|
|
| 4792 |
|
|
boolean
|
| 4793 |
|
|
ppc64_elf_size_stubs (output_bfd, stub_bfd, info, group_size,
|
| 4794 |
|
|
add_stub_section, layout_sections_again)
|
| 4795 |
|
|
bfd *output_bfd;
|
| 4796 |
|
|
bfd *stub_bfd;
|
| 4797 |
|
|
struct bfd_link_info *info;
|
| 4798 |
|
|
bfd_signed_vma group_size;
|
| 4799 |
|
|
asection * (*add_stub_section) PARAMS ((const char *, asection *));
|
| 4800 |
|
|
void (*layout_sections_again) PARAMS ((void));
|
| 4801 |
|
|
{
|
| 4802 |
|
|
bfd_size_type stub_group_size;
|
| 4803 |
|
|
boolean stubs_always_before_branch;
|
| 4804 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 4805 |
|
|
|
| 4806 |
|
|
/* Stash our params away. */
|
| 4807 |
|
|
htab->stub_bfd = stub_bfd;
|
| 4808 |
|
|
htab->add_stub_section = add_stub_section;
|
| 4809 |
|
|
htab->layout_sections_again = layout_sections_again;
|
| 4810 |
|
|
stubs_always_before_branch = group_size < 0;
|
| 4811 |
|
|
if (group_size < 0)
|
| 4812 |
|
|
stub_group_size = -group_size;
|
| 4813 |
|
|
else
|
| 4814 |
|
|
stub_group_size = group_size;
|
| 4815 |
|
|
if (stub_group_size == 1)
|
| 4816 |
|
|
{
|
| 4817 |
|
|
/* Default values. */
|
| 4818 |
|
|
stub_group_size = 30720000;
|
| 4819 |
|
|
if (htab->has_14bit_branch)
|
| 4820 |
|
|
stub_group_size = 30000;
|
| 4821 |
|
|
}
|
| 4822 |
|
|
|
| 4823 |
|
|
group_sections (htab, stub_group_size, stubs_always_before_branch);
|
| 4824 |
|
|
|
| 4825 |
|
|
while (1)
|
| 4826 |
|
|
{
|
| 4827 |
|
|
bfd *input_bfd;
|
| 4828 |
|
|
unsigned int bfd_indx;
|
| 4829 |
|
|
asection *stub_sec;
|
| 4830 |
|
|
boolean stub_changed;
|
| 4831 |
|
|
|
| 4832 |
|
|
htab->stub_iteration += 1;
|
| 4833 |
|
|
stub_changed = false;
|
| 4834 |
|
|
|
| 4835 |
|
|
for (input_bfd = info->input_bfds, bfd_indx = 0;
|
| 4836 |
|
|
input_bfd != NULL;
|
| 4837 |
|
|
input_bfd = input_bfd->link_next, bfd_indx++)
|
| 4838 |
|
|
{
|
| 4839 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 4840 |
|
|
asection *section;
|
| 4841 |
|
|
Elf_Internal_Sym *local_syms = NULL;
|
| 4842 |
|
|
|
| 4843 |
|
|
/* We'll need the symbol table in a second. */
|
| 4844 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 4845 |
|
|
if (symtab_hdr->sh_info == 0)
|
| 4846 |
|
|
continue;
|
| 4847 |
|
|
|
| 4848 |
|
|
/* Walk over each section attached to the input bfd. */
|
| 4849 |
|
|
for (section = input_bfd->sections;
|
| 4850 |
|
|
section != NULL;
|
| 4851 |
|
|
section = section->next)
|
| 4852 |
|
|
{
|
| 4853 |
|
|
Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
|
| 4854 |
|
|
|
| 4855 |
|
|
/* If there aren't any relocs, then there's nothing more
|
| 4856 |
|
|
to do. */
|
| 4857 |
|
|
if ((section->flags & SEC_RELOC) == 0
|
| 4858 |
|
|
|| section->reloc_count == 0)
|
| 4859 |
|
|
continue;
|
| 4860 |
|
|
|
| 4861 |
|
|
/* If this section is a link-once section that will be
|
| 4862 |
|
|
discarded, then don't create any stubs. */
|
| 4863 |
|
|
if (section->output_section == NULL
|
| 4864 |
|
|
|| section->output_section->owner != output_bfd)
|
| 4865 |
|
|
continue;
|
| 4866 |
|
|
|
| 4867 |
|
|
/* Get the relocs. */
|
| 4868 |
|
|
internal_relocs
|
| 4869 |
|
|
= _bfd_elf64_link_read_relocs (input_bfd, section, NULL,
|
| 4870 |
|
|
(Elf_Internal_Rela *) NULL,
|
| 4871 |
|
|
info->keep_memory);
|
| 4872 |
|
|
if (internal_relocs == NULL)
|
| 4873 |
|
|
goto error_ret_free_local;
|
| 4874 |
|
|
|
| 4875 |
|
|
/* Now examine each relocation. */
|
| 4876 |
|
|
irela = internal_relocs;
|
| 4877 |
|
|
irelaend = irela + section->reloc_count;
|
| 4878 |
|
|
for (; irela < irelaend; irela++)
|
| 4879 |
|
|
{
|
| 4880 |
|
|
unsigned int r_type, r_indx;
|
| 4881 |
|
|
enum ppc_stub_type stub_type;
|
| 4882 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 4883 |
|
|
asection *sym_sec;
|
| 4884 |
|
|
bfd_vma sym_value;
|
| 4885 |
|
|
bfd_vma destination;
|
| 4886 |
|
|
struct ppc_link_hash_entry *hash;
|
| 4887 |
|
|
char *stub_name;
|
| 4888 |
|
|
const asection *id_sec;
|
| 4889 |
|
|
|
| 4890 |
|
|
r_type = ELF64_R_TYPE (irela->r_info);
|
| 4891 |
|
|
r_indx = ELF64_R_SYM (irela->r_info);
|
| 4892 |
|
|
|
| 4893 |
|
|
if (r_type >= (unsigned int) R_PPC_max)
|
| 4894 |
|
|
{
|
| 4895 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 4896 |
|
|
goto error_ret_free_internal;
|
| 4897 |
|
|
}
|
| 4898 |
|
|
|
| 4899 |
|
|
/* Only look for stubs on branch instructions. */
|
| 4900 |
|
|
if (r_type != (unsigned int) R_PPC64_REL24
|
| 4901 |
|
|
&& r_type != (unsigned int) R_PPC64_REL14
|
| 4902 |
|
|
&& r_type != (unsigned int) R_PPC64_REL14_BRTAKEN
|
| 4903 |
|
|
&& r_type != (unsigned int) R_PPC64_REL14_BRNTAKEN)
|
| 4904 |
|
|
continue;
|
| 4905 |
|
|
|
| 4906 |
|
|
/* Now determine the call target, its name, value,
|
| 4907 |
|
|
section. */
|
| 4908 |
|
|
sym_sec = NULL;
|
| 4909 |
|
|
sym_value = 0;
|
| 4910 |
|
|
destination = 0;
|
| 4911 |
|
|
hash = NULL;
|
| 4912 |
|
|
if (r_indx < symtab_hdr->sh_info)
|
| 4913 |
|
|
{
|
| 4914 |
|
|
/* It's a local symbol. */
|
| 4915 |
|
|
Elf_Internal_Sym *sym;
|
| 4916 |
|
|
Elf_Internal_Shdr *hdr;
|
| 4917 |
|
|
|
| 4918 |
|
|
if (local_syms == NULL)
|
| 4919 |
|
|
{
|
| 4920 |
|
|
local_syms
|
| 4921 |
|
|
= (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 4922 |
|
|
if (local_syms == NULL)
|
| 4923 |
|
|
local_syms
|
| 4924 |
|
|
= bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
| 4925 |
|
|
symtab_hdr->sh_info, 0,
|
| 4926 |
|
|
NULL, NULL, NULL);
|
| 4927 |
|
|
if (local_syms == NULL)
|
| 4928 |
|
|
goto error_ret_free_internal;
|
| 4929 |
|
|
}
|
| 4930 |
|
|
sym = local_syms + r_indx;
|
| 4931 |
|
|
hdr = elf_elfsections (input_bfd)[sym->st_shndx];
|
| 4932 |
|
|
sym_sec = hdr->bfd_section;
|
| 4933 |
|
|
if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
|
| 4934 |
|
|
sym_value = sym->st_value;
|
| 4935 |
|
|
destination = (sym_value + irela->r_addend
|
| 4936 |
|
|
+ sym_sec->output_offset
|
| 4937 |
|
|
+ sym_sec->output_section->vma);
|
| 4938 |
|
|
}
|
| 4939 |
|
|
else
|
| 4940 |
|
|
{
|
| 4941 |
|
|
/* It's an external symbol. */
|
| 4942 |
|
|
int e_indx;
|
| 4943 |
|
|
|
| 4944 |
|
|
e_indx = r_indx - symtab_hdr->sh_info;
|
| 4945 |
|
|
hash = ((struct ppc_link_hash_entry *)
|
| 4946 |
|
|
elf_sym_hashes (input_bfd)[e_indx]);
|
| 4947 |
|
|
|
| 4948 |
|
|
while (hash->elf.root.type == bfd_link_hash_indirect
|
| 4949 |
|
|
|| hash->elf.root.type == bfd_link_hash_warning)
|
| 4950 |
|
|
hash = ((struct ppc_link_hash_entry *)
|
| 4951 |
|
|
hash->elf.root.u.i.link);
|
| 4952 |
|
|
|
| 4953 |
|
|
if (hash->elf.root.type == bfd_link_hash_defined
|
| 4954 |
|
|
|| hash->elf.root.type == bfd_link_hash_defweak)
|
| 4955 |
|
|
{
|
| 4956 |
|
|
sym_sec = hash->elf.root.u.def.section;
|
| 4957 |
|
|
sym_value = hash->elf.root.u.def.value;
|
| 4958 |
|
|
if (sym_sec->output_section != NULL)
|
| 4959 |
|
|
destination = (sym_value + irela->r_addend
|
| 4960 |
|
|
+ sym_sec->output_offset
|
| 4961 |
|
|
+ sym_sec->output_section->vma);
|
| 4962 |
|
|
}
|
| 4963 |
|
|
else if (hash->elf.root.type == bfd_link_hash_undefweak)
|
| 4964 |
|
|
;
|
| 4965 |
|
|
else if (hash->elf.root.type == bfd_link_hash_undefined)
|
| 4966 |
|
|
;
|
| 4967 |
|
|
else
|
| 4968 |
|
|
{
|
| 4969 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 4970 |
|
|
goto error_ret_free_internal;
|
| 4971 |
|
|
}
|
| 4972 |
|
|
}
|
| 4973 |
|
|
|
| 4974 |
|
|
/* Determine what (if any) linker stub is needed. */
|
| 4975 |
|
|
stub_type = ppc_type_of_stub (section, irela, &hash,
|
| 4976 |
|
|
destination);
|
| 4977 |
|
|
if (stub_type == ppc_stub_none)
|
| 4978 |
|
|
continue;
|
| 4979 |
|
|
|
| 4980 |
|
|
/* Support for grouping stub sections. */
|
| 4981 |
|
|
id_sec = htab->stub_group[section->id].link_sec;
|
| 4982 |
|
|
|
| 4983 |
|
|
/* Get the name of this stub. */
|
| 4984 |
|
|
stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
|
| 4985 |
|
|
if (!stub_name)
|
| 4986 |
|
|
goto error_ret_free_internal;
|
| 4987 |
|
|
|
| 4988 |
|
|
stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
|
| 4989 |
|
|
stub_name, false, false);
|
| 4990 |
|
|
if (stub_entry != NULL)
|
| 4991 |
|
|
{
|
| 4992 |
|
|
/* The proper stub has already been created. */
|
| 4993 |
|
|
free (stub_name);
|
| 4994 |
|
|
continue;
|
| 4995 |
|
|
}
|
| 4996 |
|
|
|
| 4997 |
|
|
stub_entry = ppc_add_stub (stub_name, section, htab);
|
| 4998 |
|
|
if (stub_entry == NULL)
|
| 4999 |
|
|
{
|
| 5000 |
|
|
free (stub_name);
|
| 5001 |
|
|
error_ret_free_internal:
|
| 5002 |
|
|
if (elf_section_data (section)->relocs == NULL)
|
| 5003 |
|
|
free (internal_relocs);
|
| 5004 |
|
|
error_ret_free_local:
|
| 5005 |
|
|
if (local_syms != NULL
|
| 5006 |
|
|
&& (symtab_hdr->contents
|
| 5007 |
|
|
!= (unsigned char *) local_syms))
|
| 5008 |
|
|
free (local_syms);
|
| 5009 |
|
|
return false;
|
| 5010 |
|
|
}
|
| 5011 |
|
|
|
| 5012 |
|
|
stub_entry->target_value = sym_value;
|
| 5013 |
|
|
stub_entry->target_section = sym_sec;
|
| 5014 |
|
|
stub_entry->stub_type = stub_type;
|
| 5015 |
|
|
stub_entry->h = hash;
|
| 5016 |
|
|
stub_changed = true;
|
| 5017 |
|
|
}
|
| 5018 |
|
|
|
| 5019 |
|
|
/* We're done with the internal relocs, free them. */
|
| 5020 |
|
|
if (elf_section_data (section)->relocs != internal_relocs)
|
| 5021 |
|
|
free (internal_relocs);
|
| 5022 |
|
|
}
|
| 5023 |
|
|
|
| 5024 |
|
|
if (local_syms != NULL
|
| 5025 |
|
|
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
| 5026 |
|
|
{
|
| 5027 |
|
|
if (!info->keep_memory)
|
| 5028 |
|
|
free (local_syms);
|
| 5029 |
|
|
else
|
| 5030 |
|
|
symtab_hdr->contents = (unsigned char *) local_syms;
|
| 5031 |
|
|
}
|
| 5032 |
|
|
}
|
| 5033 |
|
|
|
| 5034 |
|
|
if (!stub_changed)
|
| 5035 |
|
|
break;
|
| 5036 |
|
|
|
| 5037 |
|
|
/* OK, we've added some stubs. Find out the new size of the
|
| 5038 |
|
|
stub sections. */
|
| 5039 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 5040 |
|
|
stub_sec != NULL;
|
| 5041 |
|
|
stub_sec = stub_sec->next)
|
| 5042 |
|
|
{
|
| 5043 |
|
|
stub_sec->_raw_size = 0;
|
| 5044 |
|
|
stub_sec->_cooked_size = 0;
|
| 5045 |
|
|
}
|
| 5046 |
|
|
htab->sbrlt->_raw_size = 0;
|
| 5047 |
|
|
htab->sbrlt->_cooked_size = 0;
|
| 5048 |
|
|
|
| 5049 |
|
|
bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab);
|
| 5050 |
|
|
|
| 5051 |
|
|
/* Ask the linker to do its stuff. */
|
| 5052 |
|
|
(*htab->layout_sections_again) ();
|
| 5053 |
|
|
}
|
| 5054 |
|
|
|
| 5055 |
|
|
/* It would be nice to strip .branch_lt from the output if the
|
| 5056 |
|
|
section is empty, but it's too late. If we strip sections here,
|
| 5057 |
|
|
the dynamic symbol table is corrupted since the section symbol
|
| 5058 |
|
|
for the stripped section isn't written. */
|
| 5059 |
|
|
|
| 5060 |
|
|
return true;
|
| 5061 |
|
|
}
|
| 5062 |
|
|
|
| 5063 |
|
|
/* Called after we have determined section placement. If sections
|
| 5064 |
|
|
move, we'll be called again. Provide a value for TOCstart. */
|
| 5065 |
|
|
|
| 5066 |
|
|
bfd_vma
|
| 5067 |
|
|
ppc64_elf_toc (obfd)
|
| 5068 |
|
|
bfd *obfd;
|
| 5069 |
|
|
{
|
| 5070 |
|
|
asection *s;
|
| 5071 |
|
|
bfd_vma TOCstart;
|
| 5072 |
|
|
|
| 5073 |
|
|
/* The TOC consists of sections .got, .toc, .tocbss, .plt in that
|
| 5074 |
|
|
order. The TOC starts where the first of these sections starts. */
|
| 5075 |
|
|
s = bfd_get_section_by_name (obfd, ".got");
|
| 5076 |
|
|
if (s == NULL)
|
| 5077 |
|
|
s = bfd_get_section_by_name (obfd, ".toc");
|
| 5078 |
|
|
if (s == NULL)
|
| 5079 |
|
|
s = bfd_get_section_by_name (obfd, ".tocbss");
|
| 5080 |
|
|
if (s == NULL)
|
| 5081 |
|
|
s = bfd_get_section_by_name (obfd, ".plt");
|
| 5082 |
|
|
if (s == NULL)
|
| 5083 |
|
|
{
|
| 5084 |
|
|
/* This may happen for
|
| 5085 |
|
|
o references to TOC base (SYM@toc / TOC[tc0]) without a
|
| 5086 |
|
|
.toc directive
|
| 5087 |
|
|
o bad linker script
|
| 5088 |
|
|
o --gc-sections and empty TOC sections
|
| 5089 |
|
|
|
| 5090 |
|
|
FIXME: Warn user? */
|
| 5091 |
|
|
|
| 5092 |
|
|
/* Look for a likely section. We probably won't even be
|
| 5093 |
|
|
using TOCstart. */
|
| 5094 |
|
|
for (s = obfd->sections; s != NULL; s = s->next)
|
| 5095 |
|
|
if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
|
| 5096 |
|
|
== (SEC_ALLOC | SEC_SMALL_DATA))
|
| 5097 |
|
|
break;
|
| 5098 |
|
|
if (s == NULL)
|
| 5099 |
|
|
for (s = obfd->sections; s != NULL; s = s->next)
|
| 5100 |
|
|
if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
|
| 5101 |
|
|
== (SEC_ALLOC | SEC_SMALL_DATA))
|
| 5102 |
|
|
break;
|
| 5103 |
|
|
if (s == NULL)
|
| 5104 |
|
|
for (s = obfd->sections; s != NULL; s = s->next)
|
| 5105 |
|
|
if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
|
| 5106 |
|
|
break;
|
| 5107 |
|
|
if (s == NULL)
|
| 5108 |
|
|
for (s = obfd->sections; s != NULL; s = s->next)
|
| 5109 |
|
|
if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
|
| 5110 |
|
|
break;
|
| 5111 |
|
|
}
|
| 5112 |
|
|
|
| 5113 |
|
|
TOCstart = 0;
|
| 5114 |
|
|
if (s != NULL)
|
| 5115 |
|
|
TOCstart = s->output_section->vma + s->output_offset;
|
| 5116 |
|
|
|
| 5117 |
|
|
return TOCstart;
|
| 5118 |
|
|
}
|
| 5119 |
|
|
|
| 5120 |
|
|
/* Build all the stubs associated with the current output file.
|
| 5121 |
|
|
The stubs are kept in a hash table attached to the main linker
|
| 5122 |
|
|
hash table. This function is called via gldelf64ppc_finish. */
|
| 5123 |
|
|
|
| 5124 |
|
|
boolean
|
| 5125 |
|
|
ppc64_elf_build_stubs (info)
|
| 5126 |
|
|
struct bfd_link_info *info;
|
| 5127 |
|
|
{
|
| 5128 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 5129 |
|
|
asection *stub_sec;
|
| 5130 |
|
|
bfd_vma plt_r2;
|
| 5131 |
|
|
bfd_byte *p;
|
| 5132 |
|
|
|
| 5133 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 5134 |
|
|
stub_sec != NULL;
|
| 5135 |
|
|
stub_sec = stub_sec->next)
|
| 5136 |
|
|
{
|
| 5137 |
|
|
bfd_size_type size;
|
| 5138 |
|
|
|
| 5139 |
|
|
/* Allocate memory to hold the linker stubs. */
|
| 5140 |
|
|
size = stub_sec->_raw_size;
|
| 5141 |
|
|
if (size != 0)
|
| 5142 |
|
|
{
|
| 5143 |
|
|
stub_sec->contents = (bfd_byte *) bfd_zalloc (htab->stub_bfd, size);
|
| 5144 |
|
|
if (stub_sec->contents == NULL)
|
| 5145 |
|
|
return false;
|
| 5146 |
|
|
}
|
| 5147 |
|
|
stub_sec->_cooked_size = 0;
|
| 5148 |
|
|
}
|
| 5149 |
|
|
|
| 5150 |
|
|
if (htab->splt != NULL)
|
| 5151 |
|
|
{
|
| 5152 |
|
|
/* Build the .glink plt call stub. */
|
| 5153 |
|
|
plt_r2 = (htab->splt->output_offset
|
| 5154 |
|
|
+ htab->splt->output_section->vma
|
| 5155 |
|
|
- elf_gp (htab->splt->output_section->owner)
|
| 5156 |
|
|
- TOC_BASE_OFF);
|
| 5157 |
|
|
p = htab->sglink->contents;
|
| 5158 |
|
|
p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
|
| 5159 |
|
|
while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE)
|
| 5160 |
|
|
{
|
| 5161 |
|
|
bfd_put_32 (htab->sglink->owner, NOP, p);
|
| 5162 |
|
|
p += 4;
|
| 5163 |
|
|
}
|
| 5164 |
|
|
htab->sglink->_cooked_size = p - htab->sglink->contents;
|
| 5165 |
|
|
|
| 5166 |
|
|
/* Use reloc_count to count entries. */
|
| 5167 |
|
|
htab->sglink->reloc_count = 0;
|
| 5168 |
|
|
}
|
| 5169 |
|
|
|
| 5170 |
|
|
if (htab->sbrlt->_raw_size != 0)
|
| 5171 |
|
|
{
|
| 5172 |
|
|
htab->sbrlt->contents = (bfd_byte *) bfd_zalloc (htab->sbrlt->owner,
|
| 5173 |
|
|
htab->sbrlt->_raw_size);
|
| 5174 |
|
|
if (htab->sbrlt->contents == NULL)
|
| 5175 |
|
|
return false;
|
| 5176 |
|
|
}
|
| 5177 |
|
|
|
| 5178 |
|
|
/* Build the stubs as directed by the stub hash table. */
|
| 5179 |
|
|
bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
|
| 5180 |
|
|
htab->sglink->reloc_count = 0;
|
| 5181 |
|
|
|
| 5182 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 5183 |
|
|
stub_sec != NULL;
|
| 5184 |
|
|
stub_sec = stub_sec->next)
|
| 5185 |
|
|
{
|
| 5186 |
|
|
if (stub_sec->_raw_size != stub_sec->_cooked_size)
|
| 5187 |
|
|
break;
|
| 5188 |
|
|
}
|
| 5189 |
|
|
|
| 5190 |
|
|
if (stub_sec != NULL
|
| 5191 |
|
|
|| htab->sglink->_raw_size != htab->sglink->_cooked_size)
|
| 5192 |
|
|
{
|
| 5193 |
|
|
htab->stub_error = true;
|
| 5194 |
|
|
(*_bfd_error_handler) (_("stubs don't match calculated size"));
|
| 5195 |
|
|
}
|
| 5196 |
|
|
|
| 5197 |
|
|
return !htab->stub_error;
|
| 5198 |
|
|
}
|
| 5199 |
|
|
|
| 5200 |
|
|
/* The RELOCATE_SECTION function is called by the ELF backend linker
|
| 5201 |
|
|
to handle the relocations for a section.
|
| 5202 |
|
|
|
| 5203 |
|
|
The relocs are always passed as Rela structures; if the section
|
| 5204 |
|
|
actually uses Rel structures, the r_addend field will always be
|
| 5205 |
|
|
zero.
|
| 5206 |
|
|
|
| 5207 |
|
|
This function is responsible for adjust the section contents as
|
| 5208 |
|
|
necessary, and (if using Rela relocs and generating a
|
| 5209 |
|
|
relocateable output file) adjusting the reloc addend as
|
| 5210 |
|
|
necessary.
|
| 5211 |
|
|
|
| 5212 |
|
|
This function does not have to worry about setting the reloc
|
| 5213 |
|
|
address or the reloc symbol index.
|
| 5214 |
|
|
|
| 5215 |
|
|
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
| 5216 |
|
|
|
| 5217 |
|
|
LOCAL_SECTIONS is an array giving the section in the input file
|
| 5218 |
|
|
corresponding to the st_shndx field of each local symbol.
|
| 5219 |
|
|
|
| 5220 |
|
|
The global hash table entry for the global symbols can be found
|
| 5221 |
|
|
via elf_sym_hashes (input_bfd).
|
| 5222 |
|
|
|
| 5223 |
|
|
When generating relocateable output, this function must handle
|
| 5224 |
|
|
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
| 5225 |
|
|
going to be the section symbol corresponding to the output
|
| 5226 |
|
|
section, which means that the addend must be adjusted
|
| 5227 |
|
|
accordingly. */
|
| 5228 |
|
|
|
| 5229 |
|
|
static boolean
|
| 5230 |
|
|
ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
|
| 5231 |
|
|
contents, relocs, local_syms, local_sections)
|
| 5232 |
|
|
bfd *output_bfd;
|
| 5233 |
|
|
struct bfd_link_info *info;
|
| 5234 |
|
|
bfd *input_bfd;
|
| 5235 |
|
|
asection *input_section;
|
| 5236 |
|
|
bfd_byte *contents;
|
| 5237 |
|
|
Elf_Internal_Rela *relocs;
|
| 5238 |
|
|
Elf_Internal_Sym *local_syms;
|
| 5239 |
|
|
asection **local_sections;
|
| 5240 |
|
|
{
|
| 5241 |
|
|
struct ppc_link_hash_table *htab;
|
| 5242 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 5243 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 5244 |
|
|
Elf_Internal_Rela *rel;
|
| 5245 |
|
|
Elf_Internal_Rela *relend;
|
| 5246 |
|
|
bfd_vma *local_got_offsets;
|
| 5247 |
|
|
bfd_vma TOCstart;
|
| 5248 |
|
|
boolean ret = true;
|
| 5249 |
|
|
boolean is_opd;
|
| 5250 |
|
|
/* Disabled until we sort out how ld should choose 'y' vs 'at'. */
|
| 5251 |
|
|
boolean is_power4 = false;
|
| 5252 |
|
|
|
| 5253 |
|
|
if (info->relocateable)
|
| 5254 |
|
|
return true;
|
| 5255 |
|
|
|
| 5256 |
|
|
/* Initialize howto table if needed. */
|
| 5257 |
|
|
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
|
| 5258 |
|
|
ppc_howto_init ();
|
| 5259 |
|
|
|
| 5260 |
|
|
htab = ppc_hash_table (info);
|
| 5261 |
|
|
local_got_offsets = elf_local_got_offsets (input_bfd);
|
| 5262 |
|
|
TOCstart = elf_gp (output_bfd);
|
| 5263 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 5264 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
| 5265 |
|
|
is_opd = elf_section_data (input_section)->tdata != NULL;
|
| 5266 |
|
|
|
| 5267 |
|
|
rel = relocs;
|
| 5268 |
|
|
relend = relocs + input_section->reloc_count;
|
| 5269 |
|
|
for (; rel < relend; rel++)
|
| 5270 |
|
|
{
|
| 5271 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 5272 |
|
|
bfd_vma offset;
|
| 5273 |
|
|
bfd_vma addend;
|
| 5274 |
|
|
bfd_reloc_status_type r;
|
| 5275 |
|
|
Elf_Internal_Sym *sym;
|
| 5276 |
|
|
asection *sec;
|
| 5277 |
|
|
struct elf_link_hash_entry *h;
|
| 5278 |
|
|
struct elf_link_hash_entry *fdh;
|
| 5279 |
|
|
const char *sym_name;
|
| 5280 |
|
|
unsigned long r_symndx;
|
| 5281 |
|
|
bfd_vma relocation;
|
| 5282 |
|
|
boolean unresolved_reloc;
|
| 5283 |
|
|
boolean warned;
|
| 5284 |
|
|
long insn;
|
| 5285 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 5286 |
|
|
bfd_vma max_br_offset;
|
| 5287 |
|
|
bfd_vma from;
|
| 5288 |
|
|
|
| 5289 |
|
|
r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
|
| 5290 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 5291 |
|
|
offset = rel->r_offset;
|
| 5292 |
|
|
addend = rel->r_addend;
|
| 5293 |
|
|
r = bfd_reloc_other;
|
| 5294 |
|
|
sym = (Elf_Internal_Sym *) 0;
|
| 5295 |
|
|
sec = (asection *) 0;
|
| 5296 |
|
|
h = (struct elf_link_hash_entry *) 0;
|
| 5297 |
|
|
sym_name = (const char *) 0;
|
| 5298 |
|
|
unresolved_reloc = false;
|
| 5299 |
|
|
warned = false;
|
| 5300 |
|
|
|
| 5301 |
|
|
if (r_type == R_PPC64_TOC)
|
| 5302 |
|
|
{
|
| 5303 |
|
|
/* Relocation value is TOC base. Symbol is ignored. */
|
| 5304 |
|
|
relocation = TOCstart + TOC_BASE_OFF;
|
| 5305 |
|
|
}
|
| 5306 |
|
|
else if (r_symndx < symtab_hdr->sh_info)
|
| 5307 |
|
|
{
|
| 5308 |
|
|
/* It's a local symbol. */
|
| 5309 |
|
|
sym = local_syms + r_symndx;
|
| 5310 |
|
|
sec = local_sections[r_symndx];
|
| 5311 |
|
|
sym_name = "<local symbol>";
|
| 5312 |
|
|
|
| 5313 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
|
| 5314 |
|
|
/* rel may have changed, update our copy of addend. */
|
| 5315 |
|
|
addend = rel->r_addend;
|
| 5316 |
|
|
|
| 5317 |
|
|
if (elf_section_data (sec) != NULL)
|
| 5318 |
|
|
{
|
| 5319 |
|
|
long *opd_sym_adjust;
|
| 5320 |
|
|
|
| 5321 |
|
|
opd_sym_adjust = (long *) elf_section_data (sec)->tdata;
|
| 5322 |
|
|
if (opd_sym_adjust != NULL && sym->st_value % 24 == 0)
|
| 5323 |
|
|
relocation += opd_sym_adjust[sym->st_value / 24];
|
| 5324 |
|
|
}
|
| 5325 |
|
|
}
|
| 5326 |
|
|
else
|
| 5327 |
|
|
{
|
| 5328 |
|
|
/* It's a global symbol. */
|
| 5329 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 5330 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 5331 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 5332 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 5333 |
|
|
sym_name = h->root.root.string;
|
| 5334 |
|
|
relocation = 0;
|
| 5335 |
|
|
if (h->root.type == bfd_link_hash_defined
|
| 5336 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 5337 |
|
|
{
|
| 5338 |
|
|
sec = h->root.u.def.section;
|
| 5339 |
|
|
if (sec->output_section == NULL)
|
| 5340 |
|
|
/* Set a flag that will be cleared later if we find a
|
| 5341 |
|
|
relocation value for this symbol. output_section
|
| 5342 |
|
|
is typically NULL for symbols satisfied by a shared
|
| 5343 |
|
|
library. */
|
| 5344 |
|
|
unresolved_reloc = true;
|
| 5345 |
|
|
else
|
| 5346 |
|
|
relocation = (h->root.u.def.value
|
| 5347 |
|
|
+ sec->output_section->vma
|
| 5348 |
|
|
+ sec->output_offset);
|
| 5349 |
|
|
}
|
| 5350 |
|
|
else if (h->root.type == bfd_link_hash_undefweak)
|
| 5351 |
|
|
;
|
| 5352 |
|
|
else if (info->shared
|
| 5353 |
|
|
&& (!info->symbolic || info->allow_shlib_undefined)
|
| 5354 |
|
|
&& !info->no_undefined
|
| 5355 |
|
|
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
|
| 5356 |
|
|
;
|
| 5357 |
|
|
else
|
| 5358 |
|
|
{
|
| 5359 |
|
|
if (! ((*info->callbacks->undefined_symbol)
|
| 5360 |
|
|
(info, h->root.root.string, input_bfd, input_section,
|
| 5361 |
|
|
offset, (!info->shared
|
| 5362 |
|
|
|| info->no_undefined
|
| 5363 |
|
|
|| ELF_ST_VISIBILITY (h->other)))))
|
| 5364 |
|
|
return false;
|
| 5365 |
|
|
warned = true;
|
| 5366 |
|
|
}
|
| 5367 |
|
|
}
|
| 5368 |
|
|
|
| 5369 |
|
|
/* First handle relocations that tweak non-addend part of insn. */
|
| 5370 |
|
|
insn = 0;
|
| 5371 |
|
|
switch (r_type)
|
| 5372 |
|
|
{
|
| 5373 |
|
|
default:
|
| 5374 |
|
|
break;
|
| 5375 |
|
|
|
| 5376 |
|
|
/* Branch taken prediction relocations. */
|
| 5377 |
|
|
case R_PPC64_ADDR14_BRTAKEN:
|
| 5378 |
|
|
case R_PPC64_REL14_BRTAKEN:
|
| 5379 |
|
|
insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
|
| 5380 |
|
|
/* Fall thru. */
|
| 5381 |
|
|
|
| 5382 |
|
|
/* Branch not taken prediction relocations. */
|
| 5383 |
|
|
case R_PPC64_ADDR14_BRNTAKEN:
|
| 5384 |
|
|
case R_PPC64_REL14_BRNTAKEN:
|
| 5385 |
|
|
insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21);
|
| 5386 |
|
|
if (is_power4)
|
| 5387 |
|
|
{
|
| 5388 |
|
|
/* Set 'a' bit. This is 0b00010 in BO field for branch
|
| 5389 |
|
|
on CR(BI) insns (BO == 001at or 011at), and 0b01000
|
| 5390 |
|
|
for branch on CTR insns (BO == 1a00t or 1a01t). */
|
| 5391 |
|
|
if ((insn & (0x14 << 21)) == (0x04 << 21))
|
| 5392 |
|
|
insn |= 0x02 << 21;
|
| 5393 |
|
|
else if ((insn & (0x14 << 21)) == (0x10 << 21))
|
| 5394 |
|
|
insn |= 0x08 << 21;
|
| 5395 |
|
|
else
|
| 5396 |
|
|
break;
|
| 5397 |
|
|
}
|
| 5398 |
|
|
else
|
| 5399 |
|
|
{
|
| 5400 |
|
|
from = (offset
|
| 5401 |
|
|
+ input_section->output_offset
|
| 5402 |
|
|
+ input_section->output_section->vma);
|
| 5403 |
|
|
|
| 5404 |
|
|
/* Invert 'y' bit if not the default. */
|
| 5405 |
|
|
if ((bfd_signed_vma) (relocation + addend - from) < 0)
|
| 5406 |
|
|
insn ^= 0x01 << 21;
|
| 5407 |
|
|
}
|
| 5408 |
|
|
|
| 5409 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
|
| 5410 |
|
|
break;
|
| 5411 |
|
|
|
| 5412 |
|
|
case R_PPC64_REL24:
|
| 5413 |
|
|
/* A REL24 branching to a linkage function is followed by a
|
| 5414 |
|
|
nop. We replace the nop with a ld in order to restore
|
| 5415 |
|
|
the TOC base pointer. Only calls to shared objects need
|
| 5416 |
|
|
to alter the TOC base. These are recognized by their
|
| 5417 |
|
|
need for a PLT entry. */
|
| 5418 |
|
|
if (h != NULL
|
| 5419 |
|
|
&& (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
|
| 5420 |
|
|
&& fdh->plt.offset != (bfd_vma) -1
|
| 5421 |
|
|
&& (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
|
| 5422 |
|
|
rel, htab)) != NULL)
|
| 5423 |
|
|
{
|
| 5424 |
|
|
boolean can_plt_call = 0;
|
| 5425 |
|
|
|
| 5426 |
|
|
if (offset + 8 <= input_section->_cooked_size)
|
| 5427 |
|
|
{
|
| 5428 |
|
|
insn = bfd_get_32 (input_bfd, contents + offset + 4);
|
| 5429 |
|
|
if (insn == NOP
|
| 5430 |
|
|
|| insn == CROR_151515 || insn == CROR_313131)
|
| 5431 |
|
|
{
|
| 5432 |
|
|
bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1,
|
| 5433 |
|
|
contents + offset + 4);
|
| 5434 |
|
|
can_plt_call = 1;
|
| 5435 |
|
|
}
|
| 5436 |
|
|
}
|
| 5437 |
|
|
|
| 5438 |
|
|
if (!can_plt_call)
|
| 5439 |
|
|
{
|
| 5440 |
|
|
/* If this is a plain branch rather than a branch
|
| 5441 |
|
|
and link, don't require a nop. */
|
| 5442 |
|
|
insn = bfd_get_32 (input_bfd, contents + offset);
|
| 5443 |
|
|
if ((insn & 1) == 0)
|
| 5444 |
|
|
can_plt_call = 1;
|
| 5445 |
|
|
}
|
| 5446 |
|
|
|
| 5447 |
|
|
if (can_plt_call)
|
| 5448 |
|
|
{
|
| 5449 |
|
|
relocation = (stub_entry->stub_offset
|
| 5450 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 5451 |
|
|
+ stub_entry->stub_sec->output_section->vma);
|
| 5452 |
|
|
addend = 0;
|
| 5453 |
|
|
unresolved_reloc = false;
|
| 5454 |
|
|
}
|
| 5455 |
|
|
}
|
| 5456 |
|
|
|
| 5457 |
|
|
if (h != NULL
|
| 5458 |
|
|
&& h->root.type == bfd_link_hash_undefweak
|
| 5459 |
|
|
&& relocation == 0
|
| 5460 |
|
|
&& addend == 0)
|
| 5461 |
|
|
{
|
| 5462 |
|
|
/* Tweak calls to undefined weak functions to point at a
|
| 5463 |
|
|
blr. We can thus call a weak function without first
|
| 5464 |
|
|
checking whether the function is defined. We have a
|
| 5465 |
|
|
blr at the end of .sfpr. */
|
| 5466 |
|
|
BFD_ASSERT (htab->sfpr->_raw_size != 0);
|
| 5467 |
|
|
relocation = (htab->sfpr->_raw_size - 4
|
| 5468 |
|
|
+ htab->sfpr->output_offset
|
| 5469 |
|
|
+ htab->sfpr->output_section->vma);
|
| 5470 |
|
|
from = (offset
|
| 5471 |
|
|
+ input_section->output_offset
|
| 5472 |
|
|
+ input_section->output_section->vma);
|
| 5473 |
|
|
|
| 5474 |
|
|
/* But let's not be silly about it. If the blr isn't in
|
| 5475 |
|
|
reach, just go to the next instruction. */
|
| 5476 |
|
|
if (relocation - from + (1 << 25) >= (1 << 26)
|
| 5477 |
|
|
|| htab->sfpr->_raw_size == 0)
|
| 5478 |
|
|
relocation = from + 4;
|
| 5479 |
|
|
}
|
| 5480 |
|
|
break;
|
| 5481 |
|
|
}
|
| 5482 |
|
|
|
| 5483 |
|
|
/* Set `addend'. */
|
| 5484 |
|
|
switch (r_type)
|
| 5485 |
|
|
{
|
| 5486 |
|
|
default:
|
| 5487 |
|
|
(*_bfd_error_handler)
|
| 5488 |
|
|
(_("%s: unknown relocation type %d for symbol %s"),
|
| 5489 |
|
|
bfd_archive_filename (input_bfd), (int) r_type, sym_name);
|
| 5490 |
|
|
|
| 5491 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 5492 |
|
|
ret = false;
|
| 5493 |
|
|
continue;
|
| 5494 |
|
|
|
| 5495 |
|
|
case R_PPC64_NONE:
|
| 5496 |
|
|
case R_PPC_GNU_VTINHERIT:
|
| 5497 |
|
|
case R_PPC_GNU_VTENTRY:
|
| 5498 |
|
|
continue;
|
| 5499 |
|
|
|
| 5500 |
|
|
/* GOT16 relocations. Like an ADDR16 using the symbol's
|
| 5501 |
|
|
address in the GOT as relocation value instead of the
|
| 5502 |
|
|
symbols value itself. Also, create a GOT entry for the
|
| 5503 |
|
|
symbol and put the symbol value there. */
|
| 5504 |
|
|
case R_PPC64_GOT16:
|
| 5505 |
|
|
case R_PPC64_GOT16_LO:
|
| 5506 |
|
|
case R_PPC64_GOT16_HI:
|
| 5507 |
|
|
case R_PPC64_GOT16_HA:
|
| 5508 |
|
|
case R_PPC64_GOT16_DS:
|
| 5509 |
|
|
case R_PPC64_GOT16_LO_DS:
|
| 5510 |
|
|
{
|
| 5511 |
|
|
/* Relocation is to the entry for this symbol in the global
|
| 5512 |
|
|
offset table. */
|
| 5513 |
|
|
bfd_vma off;
|
| 5514 |
|
|
|
| 5515 |
|
|
if (htab->sgot == NULL)
|
| 5516 |
|
|
abort ();
|
| 5517 |
|
|
|
| 5518 |
|
|
if (h != NULL)
|
| 5519 |
|
|
{
|
| 5520 |
|
|
boolean dyn;
|
| 5521 |
|
|
|
| 5522 |
|
|
off = h->got.offset;
|
| 5523 |
|
|
dyn = htab->elf.dynamic_sections_created;
|
| 5524 |
|
|
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
|
| 5525 |
|
|
|| (info->shared
|
| 5526 |
|
|
&& (info->symbolic
|
| 5527 |
|
|
|| h->dynindx == -1
|
| 5528 |
|
|
|| (h->elf_link_hash_flags
|
| 5529 |
|
|
& ELF_LINK_FORCED_LOCAL))
|
| 5530 |
|
|
&& (h->elf_link_hash_flags
|
| 5531 |
|
|
& ELF_LINK_HASH_DEF_REGULAR)))
|
| 5532 |
|
|
{
|
| 5533 |
|
|
/* This is actually a static link, or it is a
|
| 5534 |
|
|
-Bsymbolic link and the symbol is defined
|
| 5535 |
|
|
locally, or the symbol was forced to be local
|
| 5536 |
|
|
because of a version file. We must initialize
|
| 5537 |
|
|
this entry in the global offset table. Since the
|
| 5538 |
|
|
offset must always be a multiple of 8, we use the
|
| 5539 |
|
|
least significant bit to record whether we have
|
| 5540 |
|
|
initialized it already.
|
| 5541 |
|
|
|
| 5542 |
|
|
When doing a dynamic link, we create a .rel.got
|
| 5543 |
|
|
relocation entry to initialize the value. This
|
| 5544 |
|
|
is done in the finish_dynamic_symbol routine. */
|
| 5545 |
|
|
if ((off & 1) != 0)
|
| 5546 |
|
|
off &= ~1;
|
| 5547 |
|
|
else
|
| 5548 |
|
|
{
|
| 5549 |
|
|
bfd_put_64 (output_bfd, relocation,
|
| 5550 |
|
|
htab->sgot->contents + off);
|
| 5551 |
|
|
h->got.offset |= 1;
|
| 5552 |
|
|
}
|
| 5553 |
|
|
}
|
| 5554 |
|
|
else
|
| 5555 |
|
|
unresolved_reloc = false;
|
| 5556 |
|
|
}
|
| 5557 |
|
|
else
|
| 5558 |
|
|
{
|
| 5559 |
|
|
if (local_got_offsets == NULL)
|
| 5560 |
|
|
abort ();
|
| 5561 |
|
|
|
| 5562 |
|
|
off = local_got_offsets[r_symndx];
|
| 5563 |
|
|
|
| 5564 |
|
|
/* The offset must always be a multiple of 8. We use
|
| 5565 |
|
|
the least significant bit to record whether we have
|
| 5566 |
|
|
already processed this entry. */
|
| 5567 |
|
|
if ((off & 1) != 0)
|
| 5568 |
|
|
off &= ~1;
|
| 5569 |
|
|
else
|
| 5570 |
|
|
{
|
| 5571 |
|
|
bfd_put_64 (output_bfd, relocation,
|
| 5572 |
|
|
htab->sgot->contents + off);
|
| 5573 |
|
|
|
| 5574 |
|
|
if (info->shared)
|
| 5575 |
|
|
{
|
| 5576 |
|
|
Elf_Internal_Rela outrel;
|
| 5577 |
|
|
Elf64_External_Rela *loc;
|
| 5578 |
|
|
|
| 5579 |
|
|
/* We need to generate a R_PPC64_RELATIVE reloc
|
| 5580 |
|
|
for the dynamic linker. */
|
| 5581 |
|
|
outrel.r_offset = (htab->sgot->output_section->vma
|
| 5582 |
|
|
+ htab->sgot->output_offset
|
| 5583 |
|
|
+ off);
|
| 5584 |
|
|
outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
|
| 5585 |
|
|
outrel.r_addend = relocation;
|
| 5586 |
|
|
loc = (Elf64_External_Rela *) htab->srelgot->contents;
|
| 5587 |
|
|
loc += htab->srelgot->reloc_count++;
|
| 5588 |
|
|
bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
|
| 5589 |
|
|
}
|
| 5590 |
|
|
|
| 5591 |
|
|
local_got_offsets[r_symndx] |= 1;
|
| 5592 |
|
|
}
|
| 5593 |
|
|
}
|
| 5594 |
|
|
|
| 5595 |
|
|
if (off >= (bfd_vma) -2)
|
| 5596 |
|
|
abort ();
|
| 5597 |
|
|
|
| 5598 |
|
|
relocation = htab->sgot->output_offset + off;
|
| 5599 |
|
|
|
| 5600 |
|
|
/* TOC base (r2) is TOC start plus 0x8000. */
|
| 5601 |
|
|
addend -= TOC_BASE_OFF;
|
| 5602 |
|
|
}
|
| 5603 |
|
|
break;
|
| 5604 |
|
|
|
| 5605 |
|
|
case R_PPC64_PLT16_HA:
|
| 5606 |
|
|
case R_PPC64_PLT16_HI:
|
| 5607 |
|
|
case R_PPC64_PLT16_LO:
|
| 5608 |
|
|
case R_PPC64_PLT32:
|
| 5609 |
|
|
case R_PPC64_PLT64:
|
| 5610 |
|
|
/* Relocation is to the entry for this symbol in the
|
| 5611 |
|
|
procedure linkage table. */
|
| 5612 |
|
|
|
| 5613 |
|
|
/* Resolve a PLT reloc against a local symbol directly,
|
| 5614 |
|
|
without using the procedure linkage table. */
|
| 5615 |
|
|
if (h == NULL)
|
| 5616 |
|
|
break;
|
| 5617 |
|
|
|
| 5618 |
|
|
if (h->plt.offset == (bfd_vma) -1
|
| 5619 |
|
|
|| htab->splt == NULL)
|
| 5620 |
|
|
{
|
| 5621 |
|
|
/* We didn't make a PLT entry for this symbol. This
|
| 5622 |
|
|
happens when statically linking PIC code, or when
|
| 5623 |
|
|
using -Bsymbolic. */
|
| 5624 |
|
|
break;
|
| 5625 |
|
|
}
|
| 5626 |
|
|
|
| 5627 |
|
|
relocation = (htab->splt->output_section->vma
|
| 5628 |
|
|
+ htab->splt->output_offset
|
| 5629 |
|
|
+ h->plt.offset);
|
| 5630 |
|
|
unresolved_reloc = false;
|
| 5631 |
|
|
break;
|
| 5632 |
|
|
|
| 5633 |
|
|
/* TOC16 relocs. We want the offset relative to the TOC base,
|
| 5634 |
|
|
which is the address of the start of the TOC plus 0x8000.
|
| 5635 |
|
|
The TOC consists of sections .got, .toc, .tocbss, and .plt,
|
| 5636 |
|
|
in this order. */
|
| 5637 |
|
|
case R_PPC64_TOC16:
|
| 5638 |
|
|
case R_PPC64_TOC16_LO:
|
| 5639 |
|
|
case R_PPC64_TOC16_HI:
|
| 5640 |
|
|
case R_PPC64_TOC16_DS:
|
| 5641 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 5642 |
|
|
case R_PPC64_TOC16_HA:
|
| 5643 |
|
|
addend -= TOCstart + TOC_BASE_OFF;
|
| 5644 |
|
|
break;
|
| 5645 |
|
|
|
| 5646 |
|
|
/* Relocate against the beginning of the section. */
|
| 5647 |
|
|
case R_PPC64_SECTOFF:
|
| 5648 |
|
|
case R_PPC64_SECTOFF_LO:
|
| 5649 |
|
|
case R_PPC64_SECTOFF_HI:
|
| 5650 |
|
|
case R_PPC64_SECTOFF_DS:
|
| 5651 |
|
|
case R_PPC64_SECTOFF_LO_DS:
|
| 5652 |
|
|
case R_PPC64_SECTOFF_HA:
|
| 5653 |
|
|
if (sec != (asection *) 0)
|
| 5654 |
|
|
addend -= sec->output_section->vma;
|
| 5655 |
|
|
break;
|
| 5656 |
|
|
|
| 5657 |
|
|
case R_PPC64_REL14:
|
| 5658 |
|
|
case R_PPC64_REL14_BRNTAKEN:
|
| 5659 |
|
|
case R_PPC64_REL14_BRTAKEN:
|
| 5660 |
|
|
case R_PPC64_REL24:
|
| 5661 |
|
|
break;
|
| 5662 |
|
|
|
| 5663 |
|
|
/* Relocations that may need to be propagated if this is a
|
| 5664 |
|
|
dynamic object. */
|
| 5665 |
|
|
case R_PPC64_REL32:
|
| 5666 |
|
|
case R_PPC64_REL64:
|
| 5667 |
|
|
case R_PPC64_ADDR14:
|
| 5668 |
|
|
case R_PPC64_ADDR14_BRNTAKEN:
|
| 5669 |
|
|
case R_PPC64_ADDR14_BRTAKEN:
|
| 5670 |
|
|
case R_PPC64_ADDR16:
|
| 5671 |
|
|
case R_PPC64_ADDR16_DS:
|
| 5672 |
|
|
case R_PPC64_ADDR16_HA:
|
| 5673 |
|
|
case R_PPC64_ADDR16_HI:
|
| 5674 |
|
|
case R_PPC64_ADDR16_HIGHER:
|
| 5675 |
|
|
case R_PPC64_ADDR16_HIGHERA:
|
| 5676 |
|
|
case R_PPC64_ADDR16_HIGHEST:
|
| 5677 |
|
|
case R_PPC64_ADDR16_HIGHESTA:
|
| 5678 |
|
|
case R_PPC64_ADDR16_LO:
|
| 5679 |
|
|
case R_PPC64_ADDR16_LO_DS:
|
| 5680 |
|
|
case R_PPC64_ADDR24:
|
| 5681 |
|
|
case R_PPC64_ADDR30:
|
| 5682 |
|
|
case R_PPC64_ADDR32:
|
| 5683 |
|
|
case R_PPC64_ADDR64:
|
| 5684 |
|
|
case R_PPC64_UADDR16:
|
| 5685 |
|
|
case R_PPC64_UADDR32:
|
| 5686 |
|
|
case R_PPC64_UADDR64:
|
| 5687 |
|
|
/* r_symndx will be zero only for relocs against symbols
|
| 5688 |
|
|
from removed linkonce sections, or sections discarded by
|
| 5689 |
|
|
a linker script. */
|
| 5690 |
|
|
if (r_symndx == 0)
|
| 5691 |
|
|
break;
|
| 5692 |
|
|
/* Fall thru. */
|
| 5693 |
|
|
|
| 5694 |
|
|
case R_PPC64_TOC:
|
| 5695 |
|
|
if ((input_section->flags & SEC_ALLOC) == 0)
|
| 5696 |
|
|
break;
|
| 5697 |
|
|
|
| 5698 |
|
|
if (NO_OPD_RELOCS && is_opd)
|
| 5699 |
|
|
break;
|
| 5700 |
|
|
|
| 5701 |
|
|
if ((info->shared
|
| 5702 |
|
|
&& (IS_ABSOLUTE_RELOC (r_type)
|
| 5703 |
|
|
|| (h != NULL
|
| 5704 |
|
|
&& h->dynindx != -1
|
| 5705 |
|
|
&& (! info->symbolic
|
| 5706 |
|
|
|| (h->elf_link_hash_flags
|
| 5707 |
|
|
& ELF_LINK_HASH_DEF_REGULAR) == 0))))
|
| 5708 |
|
|
|| (!info->shared
|
| 5709 |
|
|
&& h != NULL
|
| 5710 |
|
|
&& h->dynindx != -1
|
| 5711 |
|
|
&& (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
|
| 5712 |
|
|
&& (((h->elf_link_hash_flags
|
| 5713 |
|
|
& ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
| 5714 |
|
|
&& (h->elf_link_hash_flags
|
| 5715 |
|
|
& ELF_LINK_HASH_DEF_REGULAR) == 0)
|
| 5716 |
|
|
|| h->root.type == bfd_link_hash_undefweak
|
| 5717 |
|
|
|| h->root.type == bfd_link_hash_undefined)))
|
| 5718 |
|
|
{
|
| 5719 |
|
|
Elf_Internal_Rela outrel;
|
| 5720 |
|
|
boolean skip, relocate;
|
| 5721 |
|
|
asection *sreloc;
|
| 5722 |
|
|
Elf64_External_Rela *loc;
|
| 5723 |
|
|
|
| 5724 |
|
|
/* When generating a dynamic object, these relocations
|
| 5725 |
|
|
are copied into the output file to be resolved at run
|
| 5726 |
|
|
time. */
|
| 5727 |
|
|
|
| 5728 |
|
|
skip = false;
|
| 5729 |
|
|
relocate = false;
|
| 5730 |
|
|
|
| 5731 |
|
|
outrel.r_offset =
|
| 5732 |
|
|
_bfd_elf_section_offset (output_bfd, info, input_section,
|
| 5733 |
|
|
rel->r_offset);
|
| 5734 |
|
|
if (outrel.r_offset == (bfd_vma) -1)
|
| 5735 |
|
|
skip = true;
|
| 5736 |
|
|
else if (outrel.r_offset == (bfd_vma) -2)
|
| 5737 |
|
|
skip = true, relocate = true;
|
| 5738 |
|
|
outrel.r_offset += (input_section->output_section->vma
|
| 5739 |
|
|
+ input_section->output_offset);
|
| 5740 |
|
|
outrel.r_addend = addend;
|
| 5741 |
|
|
|
| 5742 |
|
|
if (skip)
|
| 5743 |
|
|
memset (&outrel, 0, sizeof outrel);
|
| 5744 |
|
|
else if (h != NULL
|
| 5745 |
|
|
&& h->dynindx != -1
|
| 5746 |
|
|
&& !is_opd
|
| 5747 |
|
|
&& (!IS_ABSOLUTE_RELOC (r_type)
|
| 5748 |
|
|
|| !info->shared
|
| 5749 |
|
|
|| !info->symbolic
|
| 5750 |
|
|
|| (h->elf_link_hash_flags
|
| 5751 |
|
|
& ELF_LINK_HASH_DEF_REGULAR) == 0))
|
| 5752 |
|
|
outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
|
| 5753 |
|
|
else
|
| 5754 |
|
|
{
|
| 5755 |
|
|
/* This symbol is local, or marked to become local,
|
| 5756 |
|
|
or this is an opd section reloc which must point
|
| 5757 |
|
|
at a local function. */
|
| 5758 |
|
|
outrel.r_addend += relocation;
|
| 5759 |
|
|
relocate = true;
|
| 5760 |
|
|
if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
|
| 5761 |
|
|
{
|
| 5762 |
|
|
if (is_opd && h != NULL)
|
| 5763 |
|
|
{
|
| 5764 |
|
|
/* Lie about opd entries. This case occurs
|
| 5765 |
|
|
when building shared libraries and we
|
| 5766 |
|
|
reference a function in another shared
|
| 5767 |
|
|
lib. The same thing happens for a weak
|
| 5768 |
|
|
definition in an application that's
|
| 5769 |
|
|
overridden by a strong definition in a
|
| 5770 |
|
|
shared lib. (I believe this is a generic
|
| 5771 |
|
|
bug in binutils handling of weak syms.)
|
| 5772 |
|
|
In these cases we won't use the opd
|
| 5773 |
|
|
entry in this lib. */
|
| 5774 |
|
|
unresolved_reloc = false;
|
| 5775 |
|
|
}
|
| 5776 |
|
|
outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
|
| 5777 |
|
|
}
|
| 5778 |
|
|
else
|
| 5779 |
|
|
{
|
| 5780 |
|
|
long indx = 0;
|
| 5781 |
|
|
|
| 5782 |
|
|
if (bfd_is_abs_section (sec))
|
| 5783 |
|
|
;
|
| 5784 |
|
|
else if (sec == NULL || sec->owner == NULL)
|
| 5785 |
|
|
{
|
| 5786 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 5787 |
|
|
return false;
|
| 5788 |
|
|
}
|
| 5789 |
|
|
else
|
| 5790 |
|
|
{
|
| 5791 |
|
|
asection *osec;
|
| 5792 |
|
|
|
| 5793 |
|
|
osec = sec->output_section;
|
| 5794 |
|
|
indx = elf_section_data (osec)->dynindx;
|
| 5795 |
|
|
|
| 5796 |
|
|
/* We are turning this relocation into one
|
| 5797 |
|
|
against a section symbol, so subtract out
|
| 5798 |
|
|
the output section's address but not the
|
| 5799 |
|
|
offset of the input section in the output
|
| 5800 |
|
|
section. */
|
| 5801 |
|
|
outrel.r_addend -= osec->vma;
|
| 5802 |
|
|
}
|
| 5803 |
|
|
|
| 5804 |
|
|
outrel.r_info = ELF64_R_INFO (indx, r_type);
|
| 5805 |
|
|
}
|
| 5806 |
|
|
}
|
| 5807 |
|
|
|
| 5808 |
|
|
sreloc = elf_section_data (input_section)->sreloc;
|
| 5809 |
|
|
if (sreloc == NULL)
|
| 5810 |
|
|
abort ();
|
| 5811 |
|
|
|
| 5812 |
|
|
loc = (Elf64_External_Rela *) sreloc->contents;
|
| 5813 |
|
|
loc += sreloc->reloc_count++;
|
| 5814 |
|
|
bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
|
| 5815 |
|
|
|
| 5816 |
|
|
/* If this reloc is against an external symbol, it will
|
| 5817 |
|
|
be computed at runtime, so there's no need to do
|
| 5818 |
|
|
anything now. */
|
| 5819 |
|
|
if (! relocate)
|
| 5820 |
|
|
continue;
|
| 5821 |
|
|
}
|
| 5822 |
|
|
break;
|
| 5823 |
|
|
|
| 5824 |
|
|
case R_PPC64_COPY:
|
| 5825 |
|
|
case R_PPC64_GLOB_DAT:
|
| 5826 |
|
|
case R_PPC64_JMP_SLOT:
|
| 5827 |
|
|
case R_PPC64_RELATIVE:
|
| 5828 |
|
|
/* We shouldn't ever see these dynamic relocs in relocatable
|
| 5829 |
|
|
files. */
|
| 5830 |
|
|
/* Fall thru */
|
| 5831 |
|
|
|
| 5832 |
|
|
case R_PPC64_PLTGOT16:
|
| 5833 |
|
|
case R_PPC64_PLTGOT16_DS:
|
| 5834 |
|
|
case R_PPC64_PLTGOT16_HA:
|
| 5835 |
|
|
case R_PPC64_PLTGOT16_HI:
|
| 5836 |
|
|
case R_PPC64_PLTGOT16_LO:
|
| 5837 |
|
|
case R_PPC64_PLTGOT16_LO_DS:
|
| 5838 |
|
|
case R_PPC64_PLTREL32:
|
| 5839 |
|
|
case R_PPC64_PLTREL64:
|
| 5840 |
|
|
/* These ones haven't been implemented yet. */
|
| 5841 |
|
|
|
| 5842 |
|
|
(*_bfd_error_handler)
|
| 5843 |
|
|
(_("%s: Relocation %s is not supported for symbol %s."),
|
| 5844 |
|
|
bfd_archive_filename (input_bfd),
|
| 5845 |
|
|
ppc64_elf_howto_table[(int) r_type]->name, sym_name);
|
| 5846 |
|
|
|
| 5847 |
|
|
bfd_set_error (bfd_error_invalid_operation);
|
| 5848 |
|
|
ret = false;
|
| 5849 |
|
|
continue;
|
| 5850 |
|
|
}
|
| 5851 |
|
|
|
| 5852 |
|
|
/* Do any further special processing. */
|
| 5853 |
|
|
switch (r_type)
|
| 5854 |
|
|
{
|
| 5855 |
|
|
default:
|
| 5856 |
|
|
break;
|
| 5857 |
|
|
|
| 5858 |
|
|
case R_PPC64_ADDR16_HA:
|
| 5859 |
|
|
case R_PPC64_ADDR16_HIGHERA:
|
| 5860 |
|
|
case R_PPC64_ADDR16_HIGHESTA:
|
| 5861 |
|
|
case R_PPC64_PLT16_HA:
|
| 5862 |
|
|
case R_PPC64_TOC16_HA:
|
| 5863 |
|
|
case R_PPC64_SECTOFF_HA:
|
| 5864 |
|
|
/* It's just possible that this symbol is a weak symbol
|
| 5865 |
|
|
that's not actually defined anywhere. In that case,
|
| 5866 |
|
|
'sec' would be NULL, and we should leave the symbol
|
| 5867 |
|
|
alone (it will be set to zero elsewhere in the link). */
|
| 5868 |
|
|
if (sec != NULL)
|
| 5869 |
|
|
/* Add 0x10000 if sign bit in 0:15 is set. */
|
| 5870 |
|
|
addend += ((relocation + addend) & 0x8000) << 1;
|
| 5871 |
|
|
break;
|
| 5872 |
|
|
|
| 5873 |
|
|
case R_PPC64_ADDR16_DS:
|
| 5874 |
|
|
case R_PPC64_ADDR16_LO_DS:
|
| 5875 |
|
|
case R_PPC64_GOT16_DS:
|
| 5876 |
|
|
case R_PPC64_GOT16_LO_DS:
|
| 5877 |
|
|
case R_PPC64_PLT16_LO_DS:
|
| 5878 |
|
|
case R_PPC64_SECTOFF_DS:
|
| 5879 |
|
|
case R_PPC64_SECTOFF_LO_DS:
|
| 5880 |
|
|
case R_PPC64_TOC16_DS:
|
| 5881 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 5882 |
|
|
case R_PPC64_PLTGOT16_DS:
|
| 5883 |
|
|
case R_PPC64_PLTGOT16_LO_DS:
|
| 5884 |
|
|
if (((relocation + addend) & 3) != 0)
|
| 5885 |
|
|
{
|
| 5886 |
|
|
(*_bfd_error_handler)
|
| 5887 |
|
|
(_("%s: error: relocation %s not a multiple of 4"),
|
| 5888 |
|
|
bfd_archive_filename (input_bfd),
|
| 5889 |
|
|
ppc64_elf_howto_table[(int) r_type]->name);
|
| 5890 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 5891 |
|
|
ret = false;
|
| 5892 |
|
|
continue;
|
| 5893 |
|
|
}
|
| 5894 |
|
|
break;
|
| 5895 |
|
|
|
| 5896 |
|
|
case R_PPC64_REL14:
|
| 5897 |
|
|
case R_PPC64_REL14_BRNTAKEN:
|
| 5898 |
|
|
case R_PPC64_REL14_BRTAKEN:
|
| 5899 |
|
|
max_br_offset = 1 << 15;
|
| 5900 |
|
|
goto branch_check;
|
| 5901 |
|
|
|
| 5902 |
|
|
case R_PPC64_REL24:
|
| 5903 |
|
|
max_br_offset = 1 << 25;
|
| 5904 |
|
|
|
| 5905 |
|
|
branch_check:
|
| 5906 |
|
|
/* If the branch is out of reach, then redirect the
|
| 5907 |
|
|
call to the local stub for this function. */
|
| 5908 |
|
|
from = (offset
|
| 5909 |
|
|
+ input_section->output_offset
|
| 5910 |
|
|
+ input_section->output_section->vma);
|
| 5911 |
|
|
if (relocation + addend - from + max_br_offset >= 2 * max_br_offset
|
| 5912 |
|
|
&& (stub_entry = ppc_get_stub_entry (input_section, sec, h,
|
| 5913 |
|
|
rel, htab)) != NULL)
|
| 5914 |
|
|
{
|
| 5915 |
|
|
/* Munge up the value and addend so that we call the stub
|
| 5916 |
|
|
rather than the procedure directly. */
|
| 5917 |
|
|
relocation = (stub_entry->stub_offset
|
| 5918 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 5919 |
|
|
+ stub_entry->stub_sec->output_section->vma);
|
| 5920 |
|
|
addend = 0;
|
| 5921 |
|
|
}
|
| 5922 |
|
|
break;
|
| 5923 |
|
|
}
|
| 5924 |
|
|
|
| 5925 |
|
|
/* Dynamic relocs are not propagated for SEC_DEBUGGING sections
|
| 5926 |
|
|
because such sections are not SEC_ALLOC and thus ld.so will
|
| 5927 |
|
|
not process them. */
|
| 5928 |
|
|
if (unresolved_reloc
|
| 5929 |
|
|
&& !((input_section->flags & SEC_DEBUGGING) != 0
|
| 5930 |
|
|
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
|
| 5931 |
|
|
{
|
| 5932 |
|
|
(*_bfd_error_handler)
|
| 5933 |
|
|
(_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
|
| 5934 |
|
|
bfd_archive_filename (input_bfd),
|
| 5935 |
|
|
bfd_get_section_name (input_bfd, input_section),
|
| 5936 |
|
|
(long) rel->r_offset,
|
| 5937 |
|
|
h->root.root.string);
|
| 5938 |
|
|
ret = false;
|
| 5939 |
|
|
}
|
| 5940 |
|
|
|
| 5941 |
|
|
r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
|
| 5942 |
|
|
input_bfd,
|
| 5943 |
|
|
input_section,
|
| 5944 |
|
|
contents,
|
| 5945 |
|
|
offset,
|
| 5946 |
|
|
relocation,
|
| 5947 |
|
|
addend);
|
| 5948 |
|
|
|
| 5949 |
|
|
if (r != bfd_reloc_ok)
|
| 5950 |
|
|
{
|
| 5951 |
|
|
const char *name;
|
| 5952 |
|
|
|
| 5953 |
|
|
if (h != NULL)
|
| 5954 |
|
|
{
|
| 5955 |
|
|
if (h->root.type == bfd_link_hash_undefweak
|
| 5956 |
|
|
&& ppc64_elf_howto_table[(int) r_type]->pc_relative)
|
| 5957 |
|
|
{
|
| 5958 |
|
|
/* Assume this is a call protected by other code that
|
| 5959 |
|
|
detects the symbol is undefined. If this is the case,
|
| 5960 |
|
|
we can safely ignore the overflow. If not, the
|
| 5961 |
|
|
program is hosed anyway, and a little warning isn't
|
| 5962 |
|
|
going to help. */
|
| 5963 |
|
|
|
| 5964 |
|
|
continue;
|
| 5965 |
|
|
}
|
| 5966 |
|
|
|
| 5967 |
|
|
name = h->root.root.string;
|
| 5968 |
|
|
}
|
| 5969 |
|
|
else
|
| 5970 |
|
|
{
|
| 5971 |
|
|
name = bfd_elf_string_from_elf_section (input_bfd,
|
| 5972 |
|
|
symtab_hdr->sh_link,
|
| 5973 |
|
|
sym->st_name);
|
| 5974 |
|
|
if (name == NULL)
|
| 5975 |
|
|
continue;
|
| 5976 |
|
|
if (*name == '\0')
|
| 5977 |
|
|
name = bfd_section_name (input_bfd, sec);
|
| 5978 |
|
|
}
|
| 5979 |
|
|
|
| 5980 |
|
|
if (r == bfd_reloc_overflow)
|
| 5981 |
|
|
{
|
| 5982 |
|
|
if (warned)
|
| 5983 |
|
|
continue;
|
| 5984 |
|
|
if (!((*info->callbacks->reloc_overflow)
|
| 5985 |
|
|
(info, name, ppc64_elf_howto_table[(int) r_type]->name,
|
| 5986 |
|
|
rel->r_addend, input_bfd, input_section, offset)))
|
| 5987 |
|
|
return false;
|
| 5988 |
|
|
}
|
| 5989 |
|
|
else
|
| 5990 |
|
|
{
|
| 5991 |
|
|
(*_bfd_error_handler)
|
| 5992 |
|
|
(_("%s(%s+0x%lx): reloc against `%s': error %d"),
|
| 5993 |
|
|
bfd_archive_filename (input_bfd),
|
| 5994 |
|
|
bfd_get_section_name (input_bfd, input_section),
|
| 5995 |
|
|
(long) rel->r_offset, name, (int) r);
|
| 5996 |
|
|
ret = false;
|
| 5997 |
|
|
}
|
| 5998 |
|
|
}
|
| 5999 |
|
|
}
|
| 6000 |
|
|
|
| 6001 |
|
|
return ret;
|
| 6002 |
|
|
}
|
| 6003 |
|
|
|
| 6004 |
|
|
/* Finish up dynamic symbol handling. We set the contents of various
|
| 6005 |
|
|
dynamic sections here. */
|
| 6006 |
|
|
|
| 6007 |
|
|
static boolean
|
| 6008 |
|
|
ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
|
| 6009 |
|
|
bfd *output_bfd;
|
| 6010 |
|
|
struct bfd_link_info *info;
|
| 6011 |
|
|
struct elf_link_hash_entry *h;
|
| 6012 |
|
|
Elf_Internal_Sym *sym;
|
| 6013 |
|
|
{
|
| 6014 |
|
|
struct ppc_link_hash_table *htab;
|
| 6015 |
|
|
bfd *dynobj;
|
| 6016 |
|
|
|
| 6017 |
|
|
htab = ppc_hash_table (info);
|
| 6018 |
|
|
dynobj = htab->elf.dynobj;
|
| 6019 |
|
|
|
| 6020 |
|
|
if (h->plt.offset != (bfd_vma) -1
|
| 6021 |
|
|
&& ((struct ppc_link_hash_entry *) h)->is_func_descriptor)
|
| 6022 |
|
|
{
|
| 6023 |
|
|
Elf_Internal_Rela rela;
|
| 6024 |
|
|
Elf64_External_Rela *loc;
|
| 6025 |
|
|
|
| 6026 |
|
|
/* This symbol has an entry in the procedure linkage table. Set
|
| 6027 |
|
|
it up. */
|
| 6028 |
|
|
|
| 6029 |
|
|
if (htab->splt == NULL
|
| 6030 |
|
|
|| htab->srelplt == NULL
|
| 6031 |
|
|
|| htab->sglink == NULL)
|
| 6032 |
|
|
abort ();
|
| 6033 |
|
|
|
| 6034 |
|
|
/* Create a JMP_SLOT reloc to inform the dynamic linker to
|
| 6035 |
|
|
fill in the PLT entry. */
|
| 6036 |
|
|
|
| 6037 |
|
|
rela.r_offset = (htab->splt->output_section->vma
|
| 6038 |
|
|
+ htab->splt->output_offset
|
| 6039 |
|
|
+ h->plt.offset);
|
| 6040 |
|
|
rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
|
| 6041 |
|
|
rela.r_addend = 0;
|
| 6042 |
|
|
|
| 6043 |
|
|
loc = (Elf64_External_Rela *) htab->srelplt->contents;
|
| 6044 |
|
|
loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
|
| 6045 |
|
|
bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
|
| 6046 |
|
|
}
|
| 6047 |
|
|
|
| 6048 |
|
|
if (h->got.offset != (bfd_vma) -1)
|
| 6049 |
|
|
{
|
| 6050 |
|
|
Elf_Internal_Rela rela;
|
| 6051 |
|
|
Elf64_External_Rela *loc;
|
| 6052 |
|
|
|
| 6053 |
|
|
/* This symbol has an entry in the global offset table. Set it
|
| 6054 |
|
|
up. */
|
| 6055 |
|
|
|
| 6056 |
|
|
if (htab->sgot == NULL || htab->srelgot == NULL)
|
| 6057 |
|
|
abort ();
|
| 6058 |
|
|
|
| 6059 |
|
|
rela.r_offset = (htab->sgot->output_section->vma
|
| 6060 |
|
|
+ htab->sgot->output_offset
|
| 6061 |
|
|
+ (h->got.offset &~ (bfd_vma) 1));
|
| 6062 |
|
|
|
| 6063 |
|
|
/* If this is a static link, or it is a -Bsymbolic link and the
|
| 6064 |
|
|
symbol is defined locally or was forced to be local because
|
| 6065 |
|
|
of a version file, we just want to emit a RELATIVE reloc.
|
| 6066 |
|
|
The entry in the global offset table will already have been
|
| 6067 |
|
|
initialized in the relocate_section function. */
|
| 6068 |
|
|
if (info->shared
|
| 6069 |
|
|
&& (info->symbolic
|
| 6070 |
|
|
|| h->dynindx == -1
|
| 6071 |
|
|
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
|
| 6072 |
|
|
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
|
| 6073 |
|
|
{
|
| 6074 |
|
|
BFD_ASSERT((h->got.offset & 1) != 0);
|
| 6075 |
|
|
rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
|
| 6076 |
|
|
rela.r_addend = (h->root.u.def.value
|
| 6077 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 6078 |
|
|
+ h->root.u.def.section->output_offset);
|
| 6079 |
|
|
}
|
| 6080 |
|
|
else
|
| 6081 |
|
|
{
|
| 6082 |
|
|
BFD_ASSERT ((h->got.offset & 1) == 0);
|
| 6083 |
|
|
bfd_put_64 (output_bfd, (bfd_vma) 0,
|
| 6084 |
|
|
htab->sgot->contents + h->got.offset);
|
| 6085 |
|
|
rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
|
| 6086 |
|
|
rela.r_addend = 0;
|
| 6087 |
|
|
}
|
| 6088 |
|
|
|
| 6089 |
|
|
loc = (Elf64_External_Rela *) htab->srelgot->contents;
|
| 6090 |
|
|
loc += htab->srelgot->reloc_count++;
|
| 6091 |
|
|
bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
|
| 6092 |
|
|
}
|
| 6093 |
|
|
|
| 6094 |
|
|
if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
|
| 6095 |
|
|
{
|
| 6096 |
|
|
Elf_Internal_Rela rela;
|
| 6097 |
|
|
Elf64_External_Rela *loc;
|
| 6098 |
|
|
|
| 6099 |
|
|
/* This symbol needs a copy reloc. Set it up. */
|
| 6100 |
|
|
|
| 6101 |
|
|
if (h->dynindx == -1
|
| 6102 |
|
|
|| (h->root.type != bfd_link_hash_defined
|
| 6103 |
|
|
&& h->root.type != bfd_link_hash_defweak)
|
| 6104 |
|
|
|| htab->srelbss == NULL)
|
| 6105 |
|
|
abort ();
|
| 6106 |
|
|
|
| 6107 |
|
|
rela.r_offset = (h->root.u.def.value
|
| 6108 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 6109 |
|
|
+ h->root.u.def.section->output_offset);
|
| 6110 |
|
|
rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
|
| 6111 |
|
|
rela.r_addend = 0;
|
| 6112 |
|
|
loc = (Elf64_External_Rela *) htab->srelbss->contents;
|
| 6113 |
|
|
loc += htab->srelbss->reloc_count++;
|
| 6114 |
|
|
bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
|
| 6115 |
|
|
}
|
| 6116 |
|
|
|
| 6117 |
|
|
/* Mark some specially defined symbols as absolute. */
|
| 6118 |
|
|
if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
|
| 6119 |
|
|
sym->st_shndx = SHN_ABS;
|
| 6120 |
|
|
|
| 6121 |
|
|
return true;
|
| 6122 |
|
|
}
|
| 6123 |
|
|
|
| 6124 |
|
|
/* Used to decide how to sort relocs in an optimal manner for the
|
| 6125 |
|
|
dynamic linker, before writing them out. */
|
| 6126 |
|
|
|
| 6127 |
|
|
static enum elf_reloc_type_class
|
| 6128 |
|
|
ppc64_elf_reloc_type_class (rela)
|
| 6129 |
|
|
const Elf_Internal_Rela *rela;
|
| 6130 |
|
|
{
|
| 6131 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 6132 |
|
|
|
| 6133 |
|
|
r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info);
|
| 6134 |
|
|
switch (r_type)
|
| 6135 |
|
|
{
|
| 6136 |
|
|
case R_PPC64_RELATIVE:
|
| 6137 |
|
|
return reloc_class_relative;
|
| 6138 |
|
|
case R_PPC64_JMP_SLOT:
|
| 6139 |
|
|
return reloc_class_plt;
|
| 6140 |
|
|
case R_PPC64_COPY:
|
| 6141 |
|
|
return reloc_class_copy;
|
| 6142 |
|
|
default:
|
| 6143 |
|
|
return reloc_class_normal;
|
| 6144 |
|
|
}
|
| 6145 |
|
|
}
|
| 6146 |
|
|
|
| 6147 |
|
|
/* Finish up the dynamic sections. */
|
| 6148 |
|
|
|
| 6149 |
|
|
static boolean
|
| 6150 |
|
|
ppc64_elf_finish_dynamic_sections (output_bfd, info)
|
| 6151 |
|
|
bfd *output_bfd;
|
| 6152 |
|
|
struct bfd_link_info *info;
|
| 6153 |
|
|
{
|
| 6154 |
|
|
struct ppc_link_hash_table *htab;
|
| 6155 |
|
|
bfd *dynobj;
|
| 6156 |
|
|
asection *sdyn;
|
| 6157 |
|
|
|
| 6158 |
|
|
htab = ppc_hash_table (info);
|
| 6159 |
|
|
dynobj = htab->elf.dynobj;
|
| 6160 |
|
|
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
| 6161 |
|
|
|
| 6162 |
|
|
if (htab->elf.dynamic_sections_created)
|
| 6163 |
|
|
{
|
| 6164 |
|
|
Elf64_External_Dyn *dyncon, *dynconend;
|
| 6165 |
|
|
|
| 6166 |
|
|
if (sdyn == NULL || htab->sgot == NULL)
|
| 6167 |
|
|
abort ();
|
| 6168 |
|
|
|
| 6169 |
|
|
dyncon = (Elf64_External_Dyn *) sdyn->contents;
|
| 6170 |
|
|
dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
|
| 6171 |
|
|
for (; dyncon < dynconend; dyncon++)
|
| 6172 |
|
|
{
|
| 6173 |
|
|
Elf_Internal_Dyn dyn;
|
| 6174 |
|
|
asection *s;
|
| 6175 |
|
|
|
| 6176 |
|
|
bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
|
| 6177 |
|
|
|
| 6178 |
|
|
switch (dyn.d_tag)
|
| 6179 |
|
|
{
|
| 6180 |
|
|
default:
|
| 6181 |
|
|
continue;
|
| 6182 |
|
|
|
| 6183 |
|
|
case DT_PPC64_GLINK:
|
| 6184 |
|
|
dyn.d_un.d_ptr = (htab->sglink->output_section->vma
|
| 6185 |
|
|
+ htab->sglink->output_offset);
|
| 6186 |
|
|
break;
|
| 6187 |
|
|
|
| 6188 |
|
|
case DT_PPC64_OPD:
|
| 6189 |
|
|
s = bfd_get_section_by_name (output_bfd, ".opd");
|
| 6190 |
|
|
if (s != NULL)
|
| 6191 |
|
|
dyn.d_un.d_ptr = s->vma;
|
| 6192 |
|
|
break;
|
| 6193 |
|
|
|
| 6194 |
|
|
case DT_PPC64_OPDSZ:
|
| 6195 |
|
|
s = bfd_get_section_by_name (output_bfd, ".opd");
|
| 6196 |
|
|
if (s != NULL)
|
| 6197 |
|
|
dyn.d_un.d_val = s->_raw_size;
|
| 6198 |
|
|
break;
|
| 6199 |
|
|
|
| 6200 |
|
|
case DT_PLTGOT:
|
| 6201 |
|
|
dyn.d_un.d_ptr = (htab->splt->output_section->vma
|
| 6202 |
|
|
+ htab->splt->output_offset);
|
| 6203 |
|
|
break;
|
| 6204 |
|
|
|
| 6205 |
|
|
case DT_JMPREL:
|
| 6206 |
|
|
dyn.d_un.d_ptr = (htab->srelplt->output_section->vma
|
| 6207 |
|
|
+ htab->srelplt->output_offset);
|
| 6208 |
|
|
break;
|
| 6209 |
|
|
|
| 6210 |
|
|
case DT_PLTRELSZ:
|
| 6211 |
|
|
dyn.d_un.d_val = htab->srelplt->_raw_size;
|
| 6212 |
|
|
break;
|
| 6213 |
|
|
|
| 6214 |
|
|
case DT_RELASZ:
|
| 6215 |
|
|
/* Don't count procedure linkage table relocs in the
|
| 6216 |
|
|
overall reloc count. */
|
| 6217 |
|
|
if (htab->srelplt != NULL)
|
| 6218 |
|
|
dyn.d_un.d_val -= htab->srelplt->_raw_size;
|
| 6219 |
|
|
break;
|
| 6220 |
|
|
}
|
| 6221 |
|
|
|
| 6222 |
|
|
bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 6223 |
|
|
}
|
| 6224 |
|
|
}
|
| 6225 |
|
|
|
| 6226 |
|
|
if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
|
| 6227 |
|
|
{
|
| 6228 |
|
|
/* Fill in the first entry in the global offset table.
|
| 6229 |
|
|
We use it to hold the link-time TOCbase. */
|
| 6230 |
|
|
bfd_put_64 (output_bfd,
|
| 6231 |
|
|
elf_gp (output_bfd) + TOC_BASE_OFF,
|
| 6232 |
|
|
htab->sgot->contents);
|
| 6233 |
|
|
|
| 6234 |
|
|
/* Set .got entry size. */
|
| 6235 |
|
|
elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
|
| 6236 |
|
|
}
|
| 6237 |
|
|
|
| 6238 |
|
|
if (htab->splt != NULL && htab->splt->_raw_size != 0)
|
| 6239 |
|
|
{
|
| 6240 |
|
|
/* Set .plt entry size. */
|
| 6241 |
|
|
elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
|
| 6242 |
|
|
= PLT_ENTRY_SIZE;
|
| 6243 |
|
|
}
|
| 6244 |
|
|
|
| 6245 |
|
|
return true;
|
| 6246 |
|
|
}
|
| 6247 |
|
|
|
| 6248 |
|
|
#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
|
| 6249 |
|
|
#define TARGET_LITTLE_NAME "elf64-powerpcle"
|
| 6250 |
|
|
#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
|
| 6251 |
|
|
#define TARGET_BIG_NAME "elf64-powerpc"
|
| 6252 |
|
|
#define ELF_ARCH bfd_arch_powerpc
|
| 6253 |
|
|
#define ELF_MACHINE_CODE EM_PPC64
|
| 6254 |
|
|
#define ELF_MAXPAGESIZE 0x10000
|
| 6255 |
|
|
#define elf_info_to_howto ppc64_elf_info_to_howto
|
| 6256 |
|
|
|
| 6257 |
|
|
#ifdef EM_CYGNUS_POWERPC
|
| 6258 |
|
|
#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
|
| 6259 |
|
|
#endif
|
| 6260 |
|
|
|
| 6261 |
|
|
#ifdef EM_PPC_OLD
|
| 6262 |
|
|
#define ELF_MACHINE_ALT2 EM_PPC_OLD
|
| 6263 |
|
|
#endif
|
| 6264 |
|
|
|
| 6265 |
|
|
#define elf_backend_want_got_sym 0
|
| 6266 |
|
|
#define elf_backend_want_plt_sym 0
|
| 6267 |
|
|
#define elf_backend_plt_alignment 3
|
| 6268 |
|
|
#define elf_backend_plt_not_loaded 1
|
| 6269 |
|
|
#define elf_backend_got_symbol_offset 0
|
| 6270 |
|
|
#define elf_backend_got_header_size 8
|
| 6271 |
|
|
#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
|
| 6272 |
|
|
#define elf_backend_can_gc_sections 1
|
| 6273 |
|
|
#define elf_backend_can_refcount 1
|
| 6274 |
|
|
#define elf_backend_rela_normal 1
|
| 6275 |
|
|
|
| 6276 |
|
|
#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
|
| 6277 |
|
|
#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
|
| 6278 |
|
|
#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
|
| 6279 |
|
|
#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
|
| 6280 |
|
|
|
| 6281 |
|
|
#define elf_backend_object_p ppc64_elf_object_p
|
| 6282 |
|
|
#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
|
| 6283 |
|
|
#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
|
| 6284 |
|
|
#define elf_backend_check_relocs ppc64_elf_check_relocs
|
| 6285 |
|
|
#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
|
| 6286 |
|
|
#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
|
| 6287 |
|
|
#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
|
| 6288 |
|
|
#define elf_backend_hide_symbol ppc64_elf_hide_symbol
|
| 6289 |
|
|
#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
|
| 6290 |
|
|
#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
|
| 6291 |
|
|
#define elf_backend_relocate_section ppc64_elf_relocate_section
|
| 6292 |
|
|
#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
|
| 6293 |
|
|
#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
|
| 6294 |
|
|
#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
|
| 6295 |
|
|
|
| 6296 |
|
|
#include "elf64-target.h"
|
