| 1 |
24 |
jeremybenn |
/* FR30-specific support for 32-bit ELF.
|
| 2 |
|
|
Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
|
| 3 |
|
|
Free Software Foundation, Inc.
|
| 4 |
|
|
|
| 5 |
|
|
This file is part of BFD, the Binary File Descriptor library.
|
| 6 |
|
|
|
| 7 |
|
|
This program is free software; you can redistribute it and/or modify
|
| 8 |
|
|
it under the terms of the GNU General Public License as published by
|
| 9 |
|
|
the Free Software Foundation; either version 3 of the License, or
|
| 10 |
|
|
(at your option) any later version.
|
| 11 |
|
|
|
| 12 |
|
|
This program is distributed in the hope that it will be useful,
|
| 13 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 14 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 15 |
|
|
GNU General Public License for more details.
|
| 16 |
|
|
|
| 17 |
|
|
You should have received a copy of the GNU General Public License
|
| 18 |
|
|
along with this program; if not, write to the Free Software
|
| 19 |
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
| 20 |
|
|
MA 02110-1301, USA. */
|
| 21 |
|
|
|
| 22 |
|
|
#include "sysdep.h"
|
| 23 |
|
|
#include "bfd.h"
|
| 24 |
|
|
#include "libbfd.h"
|
| 25 |
|
|
#include "elf-bfd.h"
|
| 26 |
|
|
#include "elf/fr30.h"
|
| 27 |
|
|
|
| 28 |
|
|
/* Forward declarations. */
|
| 29 |
|
|
static bfd_reloc_status_type fr30_elf_i20_reloc
|
| 30 |
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
| 31 |
|
|
static bfd_reloc_status_type fr30_elf_i32_reloc
|
| 32 |
|
|
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
| 33 |
|
|
static reloc_howto_type * fr30_reloc_type_lookup
|
| 34 |
|
|
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
|
| 35 |
|
|
static void fr30_info_to_howto_rela
|
| 36 |
|
|
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
|
| 37 |
|
|
static bfd_boolean fr30_elf_relocate_section
|
| 38 |
|
|
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
|
| 39 |
|
|
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
|
| 40 |
|
|
static bfd_reloc_status_type fr30_final_link_relocate
|
| 41 |
|
|
PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
|
| 42 |
|
|
Elf_Internal_Rela *, bfd_vma));
|
| 43 |
|
|
static bfd_boolean fr30_elf_check_relocs
|
| 44 |
|
|
PARAMS ((bfd *, struct bfd_link_info *, asection *,
|
| 45 |
|
|
const Elf_Internal_Rela *));
|
| 46 |
|
|
|
| 47 |
|
|
static reloc_howto_type fr30_elf_howto_table [] =
|
| 48 |
|
|
{
|
| 49 |
|
|
/* This reloc does nothing. */
|
| 50 |
|
|
HOWTO (R_FR30_NONE, /* type */
|
| 51 |
|
|
0, /* rightshift */
|
| 52 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 53 |
|
|
32, /* bitsize */
|
| 54 |
|
|
FALSE, /* pc_relative */
|
| 55 |
|
|
0, /* bitpos */
|
| 56 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 57 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 58 |
|
|
"R_FR30_NONE", /* name */
|
| 59 |
|
|
FALSE, /* partial_inplace */
|
| 60 |
|
|
0, /* src_mask */
|
| 61 |
|
|
0, /* dst_mask */
|
| 62 |
|
|
FALSE), /* pcrel_offset */
|
| 63 |
|
|
|
| 64 |
|
|
/* An 8 bit absolute relocation. */
|
| 65 |
|
|
HOWTO (R_FR30_8, /* type */
|
| 66 |
|
|
0, /* rightshift */
|
| 67 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 68 |
|
|
8, /* bitsize */
|
| 69 |
|
|
FALSE, /* pc_relative */
|
| 70 |
|
|
4, /* bitpos */
|
| 71 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 72 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 73 |
|
|
"R_FR30_8", /* name */
|
| 74 |
|
|
FALSE, /* partial_inplace */
|
| 75 |
|
|
0x0000, /* src_mask */
|
| 76 |
|
|
0x0ff0, /* dst_mask */
|
| 77 |
|
|
FALSE), /* pcrel_offset */
|
| 78 |
|
|
|
| 79 |
|
|
/* A 20 bit absolute relocation. */
|
| 80 |
|
|
HOWTO (R_FR30_20, /* type */
|
| 81 |
|
|
0, /* rightshift */
|
| 82 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 83 |
|
|
20, /* bitsize */
|
| 84 |
|
|
FALSE, /* pc_relative */
|
| 85 |
|
|
0, /* bitpos */
|
| 86 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 87 |
|
|
fr30_elf_i20_reloc, /* special_function */
|
| 88 |
|
|
"R_FR30_20", /* name */
|
| 89 |
|
|
FALSE, /* partial_inplace */
|
| 90 |
|
|
0x00000000, /* src_mask */
|
| 91 |
|
|
0x00f0ffff, /* dst_mask */
|
| 92 |
|
|
FALSE), /* pcrel_offset */
|
| 93 |
|
|
|
| 94 |
|
|
/* A 32 bit absolute relocation. */
|
| 95 |
|
|
HOWTO (R_FR30_32, /* type */
|
| 96 |
|
|
0, /* rightshift */
|
| 97 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 98 |
|
|
32, /* bitsize */
|
| 99 |
|
|
FALSE, /* pc_relative */
|
| 100 |
|
|
0, /* bitpos */
|
| 101 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 102 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 103 |
|
|
"R_FR30_32", /* name */
|
| 104 |
|
|
FALSE, /* partial_inplace */
|
| 105 |
|
|
0x00000000, /* src_mask */
|
| 106 |
|
|
0xffffffff, /* dst_mask */
|
| 107 |
|
|
FALSE), /* pcrel_offset */
|
| 108 |
|
|
|
| 109 |
|
|
/* A 32 bit into 48 bits absolute relocation. */
|
| 110 |
|
|
HOWTO (R_FR30_48, /* type */
|
| 111 |
|
|
0, /* rightshift */
|
| 112 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 113 |
|
|
32, /* bitsize */
|
| 114 |
|
|
FALSE, /* pc_relative */
|
| 115 |
|
|
0, /* bitpos */
|
| 116 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 117 |
|
|
fr30_elf_i32_reloc, /* special_function */
|
| 118 |
|
|
"R_FR30_48", /* name */
|
| 119 |
|
|
FALSE, /* partial_inplace */
|
| 120 |
|
|
0x00000000, /* src_mask */
|
| 121 |
|
|
0xffffffff, /* dst_mask */
|
| 122 |
|
|
FALSE), /* pcrel_offset */
|
| 123 |
|
|
|
| 124 |
|
|
/* A 6 bit absolute relocation. */
|
| 125 |
|
|
HOWTO (R_FR30_6_IN_4, /* type */
|
| 126 |
|
|
2, /* rightshift */
|
| 127 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 128 |
|
|
6, /* bitsize */
|
| 129 |
|
|
FALSE, /* pc_relative */
|
| 130 |
|
|
4, /* bitpos */
|
| 131 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
| 132 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 133 |
|
|
"R_FR30_6_IN_4", /* name */
|
| 134 |
|
|
FALSE, /* partial_inplace */
|
| 135 |
|
|
0x0000, /* src_mask */
|
| 136 |
|
|
0x00f0, /* dst_mask */
|
| 137 |
|
|
FALSE), /* pcrel_offset */
|
| 138 |
|
|
|
| 139 |
|
|
/* An 8 bit absolute relocation. */
|
| 140 |
|
|
HOWTO (R_FR30_8_IN_8, /* type */
|
| 141 |
|
|
0, /* rightshift */
|
| 142 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 143 |
|
|
8, /* bitsize */
|
| 144 |
|
|
FALSE, /* pc_relative */
|
| 145 |
|
|
4, /* bitpos */
|
| 146 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 147 |
|
|
bfd_elf_generic_reloc,/* special_function */
|
| 148 |
|
|
"R_FR30_8_IN_8", /* name */
|
| 149 |
|
|
FALSE, /* partial_inplace */
|
| 150 |
|
|
0x0000, /* src_mask */
|
| 151 |
|
|
0x0ff0, /* dst_mask */
|
| 152 |
|
|
FALSE), /* pcrel_offset */
|
| 153 |
|
|
|
| 154 |
|
|
/* A 9 bit absolute relocation. */
|
| 155 |
|
|
HOWTO (R_FR30_9_IN_8, /* type */
|
| 156 |
|
|
1, /* rightshift */
|
| 157 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 158 |
|
|
9, /* bitsize */
|
| 159 |
|
|
FALSE, /* pc_relative */
|
| 160 |
|
|
4, /* bitpos */
|
| 161 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 162 |
|
|
bfd_elf_generic_reloc,/* special_function */
|
| 163 |
|
|
"R_FR30_9_IN_8", /* name */
|
| 164 |
|
|
FALSE, /* partial_inplace */
|
| 165 |
|
|
0x0000, /* src_mask */
|
| 166 |
|
|
0x0ff0, /* dst_mask */
|
| 167 |
|
|
FALSE), /* pcrel_offset */
|
| 168 |
|
|
|
| 169 |
|
|
/* A 10 bit absolute relocation. */
|
| 170 |
|
|
HOWTO (R_FR30_10_IN_8, /* type */
|
| 171 |
|
|
2, /* rightshift */
|
| 172 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 173 |
|
|
10, /* bitsize */
|
| 174 |
|
|
FALSE, /* pc_relative */
|
| 175 |
|
|
4, /* bitpos */
|
| 176 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 177 |
|
|
bfd_elf_generic_reloc,/* special_function */
|
| 178 |
|
|
"R_FR30_10_IN_8", /* name */
|
| 179 |
|
|
FALSE, /* partial_inplace */
|
| 180 |
|
|
0x0000, /* src_mask */
|
| 181 |
|
|
0x0ff0, /* dst_mask */
|
| 182 |
|
|
FALSE), /* pcrel_offset */
|
| 183 |
|
|
|
| 184 |
|
|
/* A PC relative 9 bit relocation, right shifted by 1. */
|
| 185 |
|
|
HOWTO (R_FR30_9_PCREL, /* type */
|
| 186 |
|
|
1, /* rightshift */
|
| 187 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 188 |
|
|
9, /* bitsize */
|
| 189 |
|
|
TRUE, /* pc_relative */
|
| 190 |
|
|
0, /* bitpos */
|
| 191 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 192 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 193 |
|
|
"R_FR30_9_PCREL", /* name */
|
| 194 |
|
|
FALSE, /* partial_inplace */
|
| 195 |
|
|
0x0000, /* src_mask */
|
| 196 |
|
|
0x00ff, /* dst_mask */
|
| 197 |
|
|
FALSE), /* pcrel_offset */
|
| 198 |
|
|
|
| 199 |
|
|
/* A PC relative 12 bit relocation, right shifted by 1. */
|
| 200 |
|
|
HOWTO (R_FR30_12_PCREL, /* type */
|
| 201 |
|
|
1, /* rightshift */
|
| 202 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 203 |
|
|
12, /* bitsize */
|
| 204 |
|
|
TRUE, /* pc_relative */
|
| 205 |
|
|
0, /* bitpos */
|
| 206 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 207 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 208 |
|
|
"R_FR30_12_PCREL", /* name */
|
| 209 |
|
|
FALSE, /* partial_inplace */
|
| 210 |
|
|
0x0000, /* src_mask */
|
| 211 |
|
|
0x07ff, /* dst_mask */
|
| 212 |
|
|
FALSE), /* pcrel_offset */
|
| 213 |
|
|
/* GNU extension to record C++ vtable hierarchy */
|
| 214 |
|
|
HOWTO (R_FR30_GNU_VTINHERIT, /* type */
|
| 215 |
|
|
0, /* rightshift */
|
| 216 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 217 |
|
|
0, /* bitsize */
|
| 218 |
|
|
FALSE, /* pc_relative */
|
| 219 |
|
|
0, /* bitpos */
|
| 220 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 221 |
|
|
NULL, /* special_function */
|
| 222 |
|
|
"R_FR30_GNU_VTINHERIT", /* name */
|
| 223 |
|
|
FALSE, /* partial_inplace */
|
| 224 |
|
|
0, /* src_mask */
|
| 225 |
|
|
0, /* dst_mask */
|
| 226 |
|
|
FALSE), /* pcrel_offset */
|
| 227 |
|
|
|
| 228 |
|
|
/* GNU extension to record C++ vtable member usage */
|
| 229 |
|
|
HOWTO (R_FR30_GNU_VTENTRY, /* type */
|
| 230 |
|
|
0, /* rightshift */
|
| 231 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 232 |
|
|
0, /* bitsize */
|
| 233 |
|
|
FALSE, /* pc_relative */
|
| 234 |
|
|
0, /* bitpos */
|
| 235 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 236 |
|
|
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
|
| 237 |
|
|
"R_FR30_GNU_VTENTRY", /* name */
|
| 238 |
|
|
FALSE, /* partial_inplace */
|
| 239 |
|
|
0, /* src_mask */
|
| 240 |
|
|
0, /* dst_mask */
|
| 241 |
|
|
FALSE), /* pcrel_offset */
|
| 242 |
|
|
};
|
| 243 |
|
|
|
| 244 |
|
|
/* Utility to actually perform an R_FR30_20 reloc. */
|
| 245 |
|
|
|
| 246 |
|
|
static bfd_reloc_status_type
|
| 247 |
|
|
fr30_elf_i20_reloc (abfd, reloc_entry, symbol, data,
|
| 248 |
|
|
input_section, output_bfd, error_message)
|
| 249 |
|
|
bfd *abfd;
|
| 250 |
|
|
arelent *reloc_entry;
|
| 251 |
|
|
asymbol *symbol;
|
| 252 |
|
|
PTR data;
|
| 253 |
|
|
asection *input_section;
|
| 254 |
|
|
bfd *output_bfd;
|
| 255 |
|
|
char **error_message ATTRIBUTE_UNUSED;
|
| 256 |
|
|
{
|
| 257 |
|
|
bfd_vma relocation;
|
| 258 |
|
|
unsigned long x;
|
| 259 |
|
|
|
| 260 |
|
|
/* This part is from bfd_elf_generic_reloc. */
|
| 261 |
|
|
if (output_bfd != (bfd *) NULL
|
| 262 |
|
|
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
| 263 |
|
|
&& (! reloc_entry->howto->partial_inplace
|
| 264 |
|
|
|| reloc_entry->addend == 0))
|
| 265 |
|
|
{
|
| 266 |
|
|
reloc_entry->address += input_section->output_offset;
|
| 267 |
|
|
return bfd_reloc_ok;
|
| 268 |
|
|
}
|
| 269 |
|
|
|
| 270 |
|
|
if (output_bfd != NULL)
|
| 271 |
|
|
/* FIXME: See bfd_perform_relocation. Is this right? */
|
| 272 |
|
|
return bfd_reloc_ok;
|
| 273 |
|
|
|
| 274 |
|
|
relocation =
|
| 275 |
|
|
symbol->value
|
| 276 |
|
|
+ symbol->section->output_section->vma
|
| 277 |
|
|
+ symbol->section->output_offset
|
| 278 |
|
|
+ reloc_entry->addend;
|
| 279 |
|
|
|
| 280 |
|
|
if (relocation > (((bfd_vma) 1 << 20) - 1))
|
| 281 |
|
|
return bfd_reloc_overflow;
|
| 282 |
|
|
|
| 283 |
|
|
x = bfd_get_32 (abfd, (char *) data + reloc_entry->address);
|
| 284 |
|
|
x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
|
| 285 |
|
|
bfd_put_32 (abfd, (bfd_vma) x, (char *) data + reloc_entry->address);
|
| 286 |
|
|
|
| 287 |
|
|
return bfd_reloc_ok;
|
| 288 |
|
|
}
|
| 289 |
|
|
|
| 290 |
|
|
/* Utility to actually perform a R_FR30_48 reloc. */
|
| 291 |
|
|
|
| 292 |
|
|
static bfd_reloc_status_type
|
| 293 |
|
|
fr30_elf_i32_reloc (abfd, reloc_entry, symbol, data,
|
| 294 |
|
|
input_section, output_bfd, error_message)
|
| 295 |
|
|
bfd *abfd;
|
| 296 |
|
|
arelent *reloc_entry;
|
| 297 |
|
|
asymbol *symbol;
|
| 298 |
|
|
PTR data;
|
| 299 |
|
|
asection *input_section;
|
| 300 |
|
|
bfd *output_bfd;
|
| 301 |
|
|
char **error_message ATTRIBUTE_UNUSED;
|
| 302 |
|
|
{
|
| 303 |
|
|
bfd_vma relocation;
|
| 304 |
|
|
|
| 305 |
|
|
/* This part is from bfd_elf_generic_reloc. */
|
| 306 |
|
|
if (output_bfd != (bfd *) NULL
|
| 307 |
|
|
&& (symbol->flags & BSF_SECTION_SYM) == 0
|
| 308 |
|
|
&& (! reloc_entry->howto->partial_inplace
|
| 309 |
|
|
|| reloc_entry->addend == 0))
|
| 310 |
|
|
{
|
| 311 |
|
|
reloc_entry->address += input_section->output_offset;
|
| 312 |
|
|
return bfd_reloc_ok;
|
| 313 |
|
|
}
|
| 314 |
|
|
|
| 315 |
|
|
if (output_bfd != NULL)
|
| 316 |
|
|
/* FIXME: See bfd_perform_relocation. Is this right? */
|
| 317 |
|
|
return bfd_reloc_ok;
|
| 318 |
|
|
|
| 319 |
|
|
relocation =
|
| 320 |
|
|
symbol->value
|
| 321 |
|
|
+ symbol->section->output_section->vma
|
| 322 |
|
|
+ symbol->section->output_offset
|
| 323 |
|
|
+ reloc_entry->addend;
|
| 324 |
|
|
|
| 325 |
|
|
bfd_put_32 (abfd, relocation, (char *) data + reloc_entry->address + 2);
|
| 326 |
|
|
|
| 327 |
|
|
return bfd_reloc_ok;
|
| 328 |
|
|
}
|
| 329 |
|
|
|
| 330 |
|
|
/* Map BFD reloc types to FR30 ELF reloc types. */
|
| 331 |
|
|
|
| 332 |
|
|
struct fr30_reloc_map
|
| 333 |
|
|
{
|
| 334 |
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
| 335 |
|
|
unsigned int fr30_reloc_val;
|
| 336 |
|
|
};
|
| 337 |
|
|
|
| 338 |
|
|
static const struct fr30_reloc_map fr30_reloc_map [] =
|
| 339 |
|
|
{
|
| 340 |
|
|
{ BFD_RELOC_NONE, R_FR30_NONE },
|
| 341 |
|
|
{ BFD_RELOC_8, R_FR30_8 },
|
| 342 |
|
|
{ BFD_RELOC_FR30_20, R_FR30_20 },
|
| 343 |
|
|
{ BFD_RELOC_32, R_FR30_32 },
|
| 344 |
|
|
{ BFD_RELOC_FR30_48, R_FR30_48 },
|
| 345 |
|
|
{ BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 },
|
| 346 |
|
|
{ BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 },
|
| 347 |
|
|
{ BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 },
|
| 348 |
|
|
{ BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 },
|
| 349 |
|
|
{ BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL },
|
| 350 |
|
|
{ BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL },
|
| 351 |
|
|
{ BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT },
|
| 352 |
|
|
{ BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY },
|
| 353 |
|
|
};
|
| 354 |
|
|
|
| 355 |
|
|
static reloc_howto_type *
|
| 356 |
|
|
fr30_reloc_type_lookup (abfd, code)
|
| 357 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
| 358 |
|
|
bfd_reloc_code_real_type code;
|
| 359 |
|
|
{
|
| 360 |
|
|
unsigned int i;
|
| 361 |
|
|
|
| 362 |
|
|
for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]);
|
| 363 |
|
|
--i;)
|
| 364 |
|
|
if (fr30_reloc_map [i].bfd_reloc_val == code)
|
| 365 |
|
|
return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val];
|
| 366 |
|
|
|
| 367 |
|
|
return NULL;
|
| 368 |
|
|
}
|
| 369 |
|
|
|
| 370 |
|
|
static reloc_howto_type *
|
| 371 |
|
|
fr30_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
|
| 372 |
|
|
{
|
| 373 |
|
|
unsigned int i;
|
| 374 |
|
|
|
| 375 |
|
|
for (i = 0;
|
| 376 |
|
|
i < sizeof (fr30_elf_howto_table) / sizeof (fr30_elf_howto_table[0]);
|
| 377 |
|
|
i++)
|
| 378 |
|
|
if (fr30_elf_howto_table[i].name != NULL
|
| 379 |
|
|
&& strcasecmp (fr30_elf_howto_table[i].name, r_name) == 0)
|
| 380 |
|
|
return &fr30_elf_howto_table[i];
|
| 381 |
|
|
|
| 382 |
|
|
return NULL;
|
| 383 |
|
|
}
|
| 384 |
|
|
|
| 385 |
|
|
/* Set the howto pointer for an FR30 ELF reloc. */
|
| 386 |
|
|
|
| 387 |
|
|
static void
|
| 388 |
|
|
fr30_info_to_howto_rela (abfd, cache_ptr, dst)
|
| 389 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
| 390 |
|
|
arelent *cache_ptr;
|
| 391 |
|
|
Elf_Internal_Rela *dst;
|
| 392 |
|
|
{
|
| 393 |
|
|
unsigned int r_type;
|
| 394 |
|
|
|
| 395 |
|
|
r_type = ELF32_R_TYPE (dst->r_info);
|
| 396 |
|
|
BFD_ASSERT (r_type < (unsigned int) R_FR30_max);
|
| 397 |
|
|
cache_ptr->howto = & fr30_elf_howto_table [r_type];
|
| 398 |
|
|
}
|
| 399 |
|
|
|
| 400 |
|
|
/* Perform a single relocation. By default we use the standard BFD
|
| 401 |
|
|
routines, but a few relocs, we have to do them ourselves. */
|
| 402 |
|
|
|
| 403 |
|
|
static bfd_reloc_status_type
|
| 404 |
|
|
fr30_final_link_relocate (howto, input_bfd, input_section, contents, rel,
|
| 405 |
|
|
relocation)
|
| 406 |
|
|
reloc_howto_type *howto;
|
| 407 |
|
|
bfd *input_bfd;
|
| 408 |
|
|
asection *input_section;
|
| 409 |
|
|
bfd_byte *contents;
|
| 410 |
|
|
Elf_Internal_Rela *rel;
|
| 411 |
|
|
bfd_vma relocation;
|
| 412 |
|
|
{
|
| 413 |
|
|
bfd_reloc_status_type r = bfd_reloc_ok;
|
| 414 |
|
|
bfd_vma x;
|
| 415 |
|
|
bfd_signed_vma srel;
|
| 416 |
|
|
|
| 417 |
|
|
switch (howto->type)
|
| 418 |
|
|
{
|
| 419 |
|
|
case R_FR30_20:
|
| 420 |
|
|
contents += rel->r_offset;
|
| 421 |
|
|
relocation += rel->r_addend;
|
| 422 |
|
|
|
| 423 |
|
|
if (relocation > ((1 << 20) - 1))
|
| 424 |
|
|
return bfd_reloc_overflow;
|
| 425 |
|
|
|
| 426 |
|
|
x = bfd_get_32 (input_bfd, contents);
|
| 427 |
|
|
x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
|
| 428 |
|
|
bfd_put_32 (input_bfd, x, contents);
|
| 429 |
|
|
break;
|
| 430 |
|
|
|
| 431 |
|
|
case R_FR30_48:
|
| 432 |
|
|
contents += rel->r_offset + 2;
|
| 433 |
|
|
relocation += rel->r_addend;
|
| 434 |
|
|
bfd_put_32 (input_bfd, relocation, contents);
|
| 435 |
|
|
break;
|
| 436 |
|
|
|
| 437 |
|
|
case R_FR30_9_PCREL:
|
| 438 |
|
|
contents += rel->r_offset + 1;
|
| 439 |
|
|
srel = (bfd_signed_vma) relocation;
|
| 440 |
|
|
srel += rel->r_addend;
|
| 441 |
|
|
srel -= rel->r_offset;
|
| 442 |
|
|
srel -= 2; /* Branch instructions add 2 to the PC... */
|
| 443 |
|
|
srel -= (input_section->output_section->vma +
|
| 444 |
|
|
input_section->output_offset);
|
| 445 |
|
|
|
| 446 |
|
|
if (srel & 1)
|
| 447 |
|
|
return bfd_reloc_outofrange;
|
| 448 |
|
|
if (srel > ((1 << 8) - 1) || (srel < - (1 << 8)))
|
| 449 |
|
|
return bfd_reloc_overflow;
|
| 450 |
|
|
|
| 451 |
|
|
bfd_put_8 (input_bfd, srel >> 1, contents);
|
| 452 |
|
|
break;
|
| 453 |
|
|
|
| 454 |
|
|
case R_FR30_12_PCREL:
|
| 455 |
|
|
contents += rel->r_offset;
|
| 456 |
|
|
srel = (bfd_signed_vma) relocation;
|
| 457 |
|
|
srel += rel->r_addend;
|
| 458 |
|
|
srel -= rel->r_offset;
|
| 459 |
|
|
srel -= 2; /* Branch instructions add 2 to the PC... */
|
| 460 |
|
|
srel -= (input_section->output_section->vma +
|
| 461 |
|
|
input_section->output_offset);
|
| 462 |
|
|
|
| 463 |
|
|
if (srel & 1)
|
| 464 |
|
|
return bfd_reloc_outofrange;
|
| 465 |
|
|
if (srel > ((1 << 11) - 1) || (srel < - (1 << 11)))
|
| 466 |
|
|
return bfd_reloc_overflow;
|
| 467 |
|
|
|
| 468 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
| 469 |
|
|
x = (x & 0xf800) | ((srel >> 1) & 0x7ff);
|
| 470 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
| 471 |
|
|
break;
|
| 472 |
|
|
|
| 473 |
|
|
default:
|
| 474 |
|
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 475 |
|
|
contents, rel->r_offset,
|
| 476 |
|
|
relocation, rel->r_addend);
|
| 477 |
|
|
}
|
| 478 |
|
|
|
| 479 |
|
|
return r;
|
| 480 |
|
|
}
|
| 481 |
|
|
|
| 482 |
|
|
/* Relocate an FR30 ELF section.
|
| 483 |
|
|
|
| 484 |
|
|
The RELOCATE_SECTION function is called by the new ELF backend linker
|
| 485 |
|
|
to handle the relocations for a section.
|
| 486 |
|
|
|
| 487 |
|
|
The relocs are always passed as Rela structures; if the section
|
| 488 |
|
|
actually uses Rel structures, the r_addend field will always be
|
| 489 |
|
|
zero.
|
| 490 |
|
|
|
| 491 |
|
|
This function is responsible for adjusting the section contents as
|
| 492 |
|
|
necessary, and (if using Rela relocs and generating a relocatable
|
| 493 |
|
|
output file) adjusting the reloc addend as necessary.
|
| 494 |
|
|
|
| 495 |
|
|
This function does not have to worry about setting the reloc
|
| 496 |
|
|
address or the reloc symbol index.
|
| 497 |
|
|
|
| 498 |
|
|
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
| 499 |
|
|
|
| 500 |
|
|
LOCAL_SECTIONS is an array giving the section in the input file
|
| 501 |
|
|
corresponding to the st_shndx field of each local symbol.
|
| 502 |
|
|
|
| 503 |
|
|
The global hash table entry for the global symbols can be found
|
| 504 |
|
|
via elf_sym_hashes (input_bfd).
|
| 505 |
|
|
|
| 506 |
|
|
When generating relocatable output, this function must handle
|
| 507 |
|
|
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
| 508 |
|
|
going to be the section symbol corresponding to the output
|
| 509 |
|
|
section, which means that the addend must be adjusted
|
| 510 |
|
|
accordingly. */
|
| 511 |
|
|
|
| 512 |
|
|
static bfd_boolean
|
| 513 |
|
|
fr30_elf_relocate_section (output_bfd, info, input_bfd, input_section,
|
| 514 |
|
|
contents, relocs, local_syms, local_sections)
|
| 515 |
|
|
bfd *output_bfd;
|
| 516 |
|
|
struct bfd_link_info *info;
|
| 517 |
|
|
bfd *input_bfd;
|
| 518 |
|
|
asection *input_section;
|
| 519 |
|
|
bfd_byte *contents;
|
| 520 |
|
|
Elf_Internal_Rela *relocs;
|
| 521 |
|
|
Elf_Internal_Sym *local_syms;
|
| 522 |
|
|
asection **local_sections;
|
| 523 |
|
|
{
|
| 524 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 525 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 526 |
|
|
Elf_Internal_Rela *rel;
|
| 527 |
|
|
Elf_Internal_Rela *relend;
|
| 528 |
|
|
|
| 529 |
|
|
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
|
| 530 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
| 531 |
|
|
relend = relocs + input_section->reloc_count;
|
| 532 |
|
|
|
| 533 |
|
|
for (rel = relocs; rel < relend; rel ++)
|
| 534 |
|
|
{
|
| 535 |
|
|
reloc_howto_type *howto;
|
| 536 |
|
|
unsigned long r_symndx;
|
| 537 |
|
|
Elf_Internal_Sym *sym;
|
| 538 |
|
|
asection *sec;
|
| 539 |
|
|
struct elf_link_hash_entry *h;
|
| 540 |
|
|
bfd_vma relocation;
|
| 541 |
|
|
bfd_reloc_status_type r;
|
| 542 |
|
|
const char *name;
|
| 543 |
|
|
int r_type;
|
| 544 |
|
|
|
| 545 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 546 |
|
|
|
| 547 |
|
|
if ( r_type == R_FR30_GNU_VTINHERIT
|
| 548 |
|
|
|| r_type == R_FR30_GNU_VTENTRY)
|
| 549 |
|
|
continue;
|
| 550 |
|
|
|
| 551 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 552 |
|
|
|
| 553 |
|
|
howto = fr30_elf_howto_table + ELF32_R_TYPE (rel->r_info);
|
| 554 |
|
|
h = NULL;
|
| 555 |
|
|
sym = NULL;
|
| 556 |
|
|
sec = NULL;
|
| 557 |
|
|
|
| 558 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 559 |
|
|
{
|
| 560 |
|
|
sym = local_syms + r_symndx;
|
| 561 |
|
|
sec = local_sections [r_symndx];
|
| 562 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
| 563 |
|
|
|
| 564 |
|
|
name = bfd_elf_string_from_elf_section
|
| 565 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
| 566 |
|
|
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
| 567 |
|
|
}
|
| 568 |
|
|
else
|
| 569 |
|
|
{
|
| 570 |
|
|
bfd_boolean unresolved_reloc, warned;
|
| 571 |
|
|
|
| 572 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
| 573 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
| 574 |
|
|
h, sec, relocation,
|
| 575 |
|
|
unresolved_reloc, warned);
|
| 576 |
|
|
|
| 577 |
|
|
name = h->root.root.string;
|
| 578 |
|
|
}
|
| 579 |
|
|
|
| 580 |
|
|
if (sec != NULL && elf_discarded_section (sec))
|
| 581 |
|
|
{
|
| 582 |
|
|
/* For relocs against symbols from removed linkonce sections,
|
| 583 |
|
|
or sections discarded by a linker script, we just want the
|
| 584 |
|
|
section contents zeroed. Avoid any special processing. */
|
| 585 |
|
|
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
|
| 586 |
|
|
rel->r_info = 0;
|
| 587 |
|
|
rel->r_addend = 0;
|
| 588 |
|
|
continue;
|
| 589 |
|
|
}
|
| 590 |
|
|
|
| 591 |
|
|
if (info->relocatable)
|
| 592 |
|
|
continue;
|
| 593 |
|
|
|
| 594 |
|
|
r = fr30_final_link_relocate (howto, input_bfd, input_section,
|
| 595 |
|
|
contents, rel, relocation);
|
| 596 |
|
|
|
| 597 |
|
|
if (r != bfd_reloc_ok)
|
| 598 |
|
|
{
|
| 599 |
|
|
const char * msg = (const char *) NULL;
|
| 600 |
|
|
|
| 601 |
|
|
switch (r)
|
| 602 |
|
|
{
|
| 603 |
|
|
case bfd_reloc_overflow:
|
| 604 |
|
|
r = info->callbacks->reloc_overflow
|
| 605 |
|
|
(info, (h ? &h->root : NULL), name, howto->name,
|
| 606 |
|
|
(bfd_vma) 0, input_bfd, input_section, rel->r_offset);
|
| 607 |
|
|
break;
|
| 608 |
|
|
|
| 609 |
|
|
case bfd_reloc_undefined:
|
| 610 |
|
|
r = info->callbacks->undefined_symbol
|
| 611 |
|
|
(info, name, input_bfd, input_section, rel->r_offset,
|
| 612 |
|
|
TRUE);
|
| 613 |
|
|
break;
|
| 614 |
|
|
|
| 615 |
|
|
case bfd_reloc_outofrange:
|
| 616 |
|
|
msg = _("internal error: out of range error");
|
| 617 |
|
|
break;
|
| 618 |
|
|
|
| 619 |
|
|
case bfd_reloc_notsupported:
|
| 620 |
|
|
msg = _("internal error: unsupported relocation error");
|
| 621 |
|
|
break;
|
| 622 |
|
|
|
| 623 |
|
|
case bfd_reloc_dangerous:
|
| 624 |
|
|
msg = _("internal error: dangerous relocation");
|
| 625 |
|
|
break;
|
| 626 |
|
|
|
| 627 |
|
|
default:
|
| 628 |
|
|
msg = _("internal error: unknown error");
|
| 629 |
|
|
break;
|
| 630 |
|
|
}
|
| 631 |
|
|
|
| 632 |
|
|
if (msg)
|
| 633 |
|
|
r = info->callbacks->warning
|
| 634 |
|
|
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
| 635 |
|
|
|
| 636 |
|
|
if (! r)
|
| 637 |
|
|
return FALSE;
|
| 638 |
|
|
}
|
| 639 |
|
|
}
|
| 640 |
|
|
|
| 641 |
|
|
return TRUE;
|
| 642 |
|
|
}
|
| 643 |
|
|
|
| 644 |
|
|
/* Return the section that should be marked against GC for a given
|
| 645 |
|
|
relocation. */
|
| 646 |
|
|
|
| 647 |
|
|
static asection *
|
| 648 |
|
|
fr30_elf_gc_mark_hook (asection *sec,
|
| 649 |
|
|
struct bfd_link_info *info,
|
| 650 |
|
|
Elf_Internal_Rela *rel,
|
| 651 |
|
|
struct elf_link_hash_entry *h,
|
| 652 |
|
|
Elf_Internal_Sym *sym)
|
| 653 |
|
|
{
|
| 654 |
|
|
if (h != NULL)
|
| 655 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
| 656 |
|
|
{
|
| 657 |
|
|
case R_FR30_GNU_VTINHERIT:
|
| 658 |
|
|
case R_FR30_GNU_VTENTRY:
|
| 659 |
|
|
return NULL;
|
| 660 |
|
|
}
|
| 661 |
|
|
|
| 662 |
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
| 663 |
|
|
}
|
| 664 |
|
|
|
| 665 |
|
|
/* Look through the relocs for a section during the first phase.
|
| 666 |
|
|
Since we don't do .gots or .plts, we just need to consider the
|
| 667 |
|
|
virtual table relocs for gc. */
|
| 668 |
|
|
|
| 669 |
|
|
static bfd_boolean
|
| 670 |
|
|
fr30_elf_check_relocs (abfd, info, sec, relocs)
|
| 671 |
|
|
bfd *abfd;
|
| 672 |
|
|
struct bfd_link_info *info;
|
| 673 |
|
|
asection *sec;
|
| 674 |
|
|
const Elf_Internal_Rela *relocs;
|
| 675 |
|
|
{
|
| 676 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 677 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 678 |
|
|
const Elf_Internal_Rela *rel;
|
| 679 |
|
|
const Elf_Internal_Rela *rel_end;
|
| 680 |
|
|
|
| 681 |
|
|
if (info->relocatable)
|
| 682 |
|
|
return TRUE;
|
| 683 |
|
|
|
| 684 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 685 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 686 |
|
|
|
| 687 |
|
|
rel_end = relocs + sec->reloc_count;
|
| 688 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
| 689 |
|
|
{
|
| 690 |
|
|
struct elf_link_hash_entry *h;
|
| 691 |
|
|
unsigned long r_symndx;
|
| 692 |
|
|
|
| 693 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 694 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 695 |
|
|
h = NULL;
|
| 696 |
|
|
else
|
| 697 |
|
|
{
|
| 698 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 699 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 700 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 701 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 702 |
|
|
}
|
| 703 |
|
|
|
| 704 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
| 705 |
|
|
{
|
| 706 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
| 707 |
|
|
Reconstruct it for later use during GC. */
|
| 708 |
|
|
case R_FR30_GNU_VTINHERIT:
|
| 709 |
|
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
| 710 |
|
|
return FALSE;
|
| 711 |
|
|
break;
|
| 712 |
|
|
|
| 713 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
| 714 |
|
|
used. Record for later use during GC. */
|
| 715 |
|
|
case R_FR30_GNU_VTENTRY:
|
| 716 |
|
|
BFD_ASSERT (h != NULL);
|
| 717 |
|
|
if (h != NULL
|
| 718 |
|
|
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
| 719 |
|
|
return FALSE;
|
| 720 |
|
|
break;
|
| 721 |
|
|
}
|
| 722 |
|
|
}
|
| 723 |
|
|
|
| 724 |
|
|
return TRUE;
|
| 725 |
|
|
}
|
| 726 |
|
|
|
| 727 |
|
|
#define ELF_ARCH bfd_arch_fr30
|
| 728 |
|
|
#define ELF_MACHINE_CODE EM_FR30
|
| 729 |
|
|
#define ELF_MACHINE_ALT1 EM_CYGNUS_FR30
|
| 730 |
|
|
#define ELF_MAXPAGESIZE 0x1000
|
| 731 |
|
|
|
| 732 |
|
|
#define TARGET_BIG_SYM bfd_elf32_fr30_vec
|
| 733 |
|
|
#define TARGET_BIG_NAME "elf32-fr30"
|
| 734 |
|
|
|
| 735 |
|
|
#define elf_info_to_howto_rel NULL
|
| 736 |
|
|
#define elf_info_to_howto fr30_info_to_howto_rela
|
| 737 |
|
|
#define elf_backend_relocate_section fr30_elf_relocate_section
|
| 738 |
|
|
#define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook
|
| 739 |
|
|
#define elf_backend_check_relocs fr30_elf_check_relocs
|
| 740 |
|
|
|
| 741 |
|
|
#define elf_backend_can_gc_sections 1
|
| 742 |
|
|
#define elf_backend_rela_normal 1
|
| 743 |
|
|
|
| 744 |
|
|
#define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup
|
| 745 |
|
|
#define bfd_elf32_bfd_reloc_name_lookup fr30_reloc_name_lookup
|
| 746 |
|
|
|
| 747 |
|
|
#include "elf32-target.h"
|