bfd/elfarm-nabi.c

   1 /* 32-bit ELF support for ARM new abi option.
   2    Copyright 1999 Free Software Foundation, Inc.
   3
   4    This file is part of BFD, the Binary File Descriptor library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 #include "elf/arm.h"
  21 #include "bfd.h"
  22 #include "sysdep.h"
  23 #include "libbfd.h"
  24 #include "elf-bfd.h"
  25
  26 #ifndef NUM_ELEM
  27 #define NUM_ELEM(a)  (sizeof (a) / (sizeof (a)[0]))
  28 #endif
  29
  30 #define USE_REL
  31
  32 #define TARGET_LITTLE_SYM               bfd_elf32_littlearm_vec
  33 #define TARGET_LITTLE_NAME              "elf32-littlearm"
  34 #define TARGET_BIG_SYM                  bfd_elf32_bigarm_vec
  35 #define TARGET_BIG_NAME                 "elf32-bigarm"
  36
  37 #define elf_info_to_howto               0
  38 #define elf_info_to_howto_rel           elf32_arm_info_to_howto_rel
  39
  40
  41 static reloc_howto_type * elf32_arm_reloc_type_lookup
  42   PARAMS ((bfd * abfd, bfd_reloc_code_real_type code));
  43
  44 static reloc_howto_type elf32_arm_howto_table[] =
  45 {
  46   /* No relocation */
  47   HOWTO (R_ARM_NONE,            /* type */
  48          0,                     /* rightshift */
  49          0,                     /* size (0 = byte, 1 = short, 2 = long) */
  50          0,                     /* bitsize */
  51          false,                 /* pc_relative */
  52          0,                     /* bitpos */
  53          complain_overflow_dont,/* complain_on_overflow */
  54          bfd_elf_generic_reloc, /* special_function */
  55          "R_ARM_NONE",          /* name */
  56          false,                 /* partial_inplace */
  57          0,                     /* src_mask */
  58          0,                     /* dst_mask */
  59          false),                /* pcrel_offset */
  60
  61   HOWTO (R_ARM_PC24,            /* type */
  62          2,                     /* rightshift */
  63          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  64          24,                    /* bitsize */
  65          true,                  /* pc_relative */
  66          0,                     /* bitpos */
  67          complain_overflow_signed,/* complain_on_overflow */
  68          bfd_elf_generic_reloc, /* special_function */
  69          "R_ARM_PC24",          /* name */
  70          false,                 /* partial_inplace */
  71          0x00ffffff,            /* src_mask */
  72          0x00ffffff,            /* dst_mask */
  73          true),                 /* pcrel_offset */
  74
  75   /* 32 bit absolute */
  76   HOWTO (R_ARM_ABS32,           /* type */
  77          0,                     /* rightshift */
  78          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  79          32,                    /* bitsize */
  80          false,                 /* pc_relative */
  81          0,                     /* bitpos */
  82          complain_overflow_bitfield,/* complain_on_overflow */
  83          bfd_elf_generic_reloc, /* special_function */
  84          "R_ARM_ABS32",         /* name */
  85          false,                 /* partial_inplace */
  86          0xffffffff,            /* src_mask */
  87          0xffffffff,            /* dst_mask */
  88          false),                /* pcrel_offset */
  89
  90   /* standard 32bit pc-relative reloc */
  91   HOWTO (R_ARM_REL32,           /* type */
  92          0,                     /* rightshift */
  93          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  94          32,                    /* bitsize */
  95          true,                  /* pc_relative */
  96          0,                     /* bitpos */
  97          complain_overflow_bitfield,/* complain_on_overflow */
  98          bfd_elf_generic_reloc, /* special_function */
  99          "R_ARM_REL32",         /* name */
 100          false,                 /* partial_inplace */
 101          0xffffffff,            /* src_mask */
 102          0xffffffff,            /* dst_mask */
 103          true),                 /* pcrel_offset */
 104
 105   /* 8 bit absolute */
 106   HOWTO (R_ARM_PC13,            /* type */
 107          0,                     /* rightshift */
 108          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 109          8,                     /* bitsize */
 110          false,                 /* pc_relative */
 111          0,                     /* bitpos */
 112          complain_overflow_bitfield,/* complain_on_overflow */
 113          bfd_elf_generic_reloc, /* special_function */
 114          "R_ARM_PC13",          /* name */
 115          false,                 /* partial_inplace */
 116          0x000000ff,            /* src_mask */
 117          0x000000ff,            /* dst_mask */
 118          false),                /* pcrel_offset */
 119
 120    /* 16 bit absolute */
 121   HOWTO (R_ARM_ABS16,           /* type */
 122          0,                     /* rightshift */
 123          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 124          16,                    /* bitsize */
 125          false,                 /* pc_relative */
 126          0,                     /* bitpos */
 127          complain_overflow_bitfield,/* complain_on_overflow */
 128          bfd_elf_generic_reloc, /* special_function */
 129          "R_ARM_ABS16",         /* name */
 130          false,                 /* partial_inplace */
 131          0,                     /* src_mask */
 132          0,                     /* dst_mask */
 133          false),                /* pcrel_offset */
 134
 135   /* 12 bit absolute */
 136   HOWTO (R_ARM_ABS12,           /* type */
 137          0,                     /* rightshift */
 138          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 139          12,                    /* bitsize */
 140          false,                 /* pc_relative */
 141          0,                     /* bitpos */
 142          complain_overflow_bitfield,/* complain_on_overflow */
 143          bfd_elf_generic_reloc, /* special_function */
 144          "R_ARM_ABS12",         /* name */
 145          false,                 /* partial_inplace */
 146          0x000008ff,            /* src_mask */
 147          0x000008ff,            /* dst_mask */
 148          false),                /* pcrel_offset */
 149
 150   HOWTO (R_ARM_THM_ABS5,        /* type */
 151          6,                     /* rightshift */
 152          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 153          5,                     /* bitsize */
 154          false,                 /* pc_relative */
 155          0,                     /* bitpos */
 156          complain_overflow_bitfield,/* complain_on_overflow */
 157          bfd_elf_generic_reloc, /* special_function */
 158          "R_ARM_THM_ABS5",      /* name */
 159          false,                 /* partial_inplace */
 160          0x000007e0,            /* src_mask */
 161          0x000007e0,            /* dst_mask */
 162          false),                /* pcrel_offset */
 163
 164   /* 8 bit absolute */
 165   HOWTO (R_ARM_ABS8,            /* type */
 166          0,                     /* rightshift */
 167          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 168          8,                     /* bitsize */
 169          false,                 /* pc_relative */
 170          0,                     /* bitpos */
 171          complain_overflow_bitfield,/* complain_on_overflow */
 172          bfd_elf_generic_reloc, /* special_function */
 173          "R_ARM_ABS8",          /* name */
 174          false,                 /* partial_inplace */
 175          0x000000ff,            /* src_mask */
 176          0x000000ff,            /* dst_mask */
 177          false),                /* pcrel_offset */
 178
 179   HOWTO (R_ARM_SBREL32,         /* type */
 180          0,                     /* rightshift */
 181          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 182          0,                     /* bitsize */
 183          false,                 /* pc_relative */
 184          0,                     /* bitpos */
 185          complain_overflow_dont,/* complain_on_overflow */
 186          bfd_elf_generic_reloc, /* special_function */
 187          "R_ARM_SBREL32",       /* name */
 188          false,                 /* partial_inplace */
 189          0,                     /* src_mask */
 190          0,                     /* dst_mask */
 191          false),                /* pcrel_offset */
 192
 193   HOWTO (R_ARM_THM_PC22,        /* type */
 194          1,                     /* rightshift */
 195          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 196          23,                    /* bitsize */
 197          true,                  /* pc_relative */
 198          0,                     /* bitpos */
 199          complain_overflow_signed,/* complain_on_overflow */
 200          bfd_elf_generic_reloc, /* special_function */
 201          "R_ARM_THM_PC22",      /* name */
 202          false,                 /* partial_inplace */
 203          0x07ff07ff,            /* src_mask */
 204          0x07ff07ff,            /* dst_mask */
 205          true),                 /* pcrel_offset */
 206
 207   HOWTO (R_ARM_THM_PC8,         /* type */
 208          1,                     /* rightshift */
 209          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 210          8,                     /* bitsize */
 211          true,                  /* pc_relative */
 212          0,                     /* bitpos */
 213          complain_overflow_signed,/* complain_on_overflow */
 214          bfd_elf_generic_reloc, /* special_function */
 215          "R_ARM_THM_PC8",       /* name */
 216          false,                 /* partial_inplace */
 217          0x000000ff,            /* src_mask */
 218          0x000000ff,            /* dst_mask */
 219          true),                 /* pcrel_offset */
 220
 221   HOWTO (R_ARM_AMP_VCALL9,      /* type */
 222          1,                     /* rightshift */
 223          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 224          8,                     /* bitsize */
 225          true,                  /* pc_relative */
 226          0,                     /* bitpos */
 227          complain_overflow_signed,/* complain_on_overflow */
 228          bfd_elf_generic_reloc, /* special_function */
 229          "R_ARM_AMP_VCALL9",    /* name */
 230          false,                 /* partial_inplace */
 231          0x000000ff,            /* src_mask */
 232          0x000000ff,            /* dst_mask */
 233          true),                 /* pcrel_offset */
 234
 235   HOWTO (R_ARM_SWI24,           /* type */
 236          0,                     /* rightshift */
 237          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 238          0,                     /* bitsize */
 239          false,                 /* pc_relative */
 240          0,                     /* bitpos */
 241          complain_overflow_signed,/* complain_on_overflow */
 242          bfd_elf_generic_reloc, /* special_function */
 243          "R_ARM_SWI24",         /* name */
 244          false,                 /* partial_inplace */
 245          0x00000000,            /* src_mask */
 246          0x00000000,            /* dst_mask */
 247          false),                /* pcrel_offset */
 248
 249   HOWTO (R_ARM_THM_SWI8,        /* type */
 250          0,                     /* rightshift */
 251          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 252          0,                     /* bitsize */
 253          false,                 /* pc_relative */
 254          0,                     /* bitpos */
 255          complain_overflow_signed,/* complain_on_overflow */
 256          bfd_elf_generic_reloc, /* special_function */
 257          "R_ARM_SWI8",          /* name */
 258          false,                 /* partial_inplace */
 259          0x00000000,            /* src_mask */
 260          0x00000000,            /* dst_mask */
 261          false),                /* pcrel_offset */
 262
 263   /* These next two relocs are defined, but I do not know what they do.  */
 264
 265   HOWTO (R_ARM_XPC25,           /* type */
 266          0,                     /* rightshift */
 267          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 268          0,                     /* bitsize */
 269          false,                 /* pc_relative */
 270          0,                     /* bitpos */
 271          complain_overflow_signed,/* complain_on_overflow */
 272          bfd_elf_generic_reloc, /* special_function */
 273          "R_ARM_XPC25",         /* name */
 274          false,                 /* partial_inplace */
 275          0x00000000,            /* src_mask */
 276          0x00000000,            /* dst_mask */
 277          false),                /* pcrel_offset */
 278
 279   HOWTO (R_ARM_THM_XPC22,       /* type */
 280          0,                     /* rightshift */
 281          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 282          0,                     /* bitsize */
 283          false,                 /* pc_relative */
 284          0,                     /* bitpos */
 285          complain_overflow_signed,/* complain_on_overflow */
 286          bfd_elf_generic_reloc, /* special_function */
 287          "R_ARM_THM_XPC22",     /* name */
 288          false,                 /* partial_inplace */
 289          0x00000000,            /* src_mask */
 290          0x00000000,            /* dst_mask */
 291          false),                /* pcrel_offset */
 292
 293   /* These next three relocs are not defined, but we need to fill the space.  */
 294
 295   HOWTO (R_ARM_NONE,            /* type */
 296          0,                     /* rightshift */
 297          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 298          0,                     /* bitsize */
 299          false,                 /* pc_relative */
 300          0,                     /* bitpos */
 301          complain_overflow_dont,/* complain_on_overflow */
 302          bfd_elf_generic_reloc, /* special_function */
 303          "R_ARM_unknown_17",    /* name */
 304          false,                 /* partial_inplace */
 305          0,                     /* src_mask */
 306          0,                     /* dst_mask */
 307          false),                /* pcrel_offset */
 308
 309   HOWTO (R_ARM_NONE,            /* type */
 310          0,                     /* rightshift */
 311          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 312          0,                     /* bitsize */
 313          false,                 /* pc_relative */
 314          0,                     /* bitpos */
 315          complain_overflow_dont,/* complain_on_overflow */
 316          bfd_elf_generic_reloc, /* special_function */
 317          "R_ARM_unknown_18",    /* name */
 318          false,                 /* partial_inplace */
 319          0,                     /* src_mask */
 320          0,                     /* dst_mask */
 321          false),                /* pcrel_offset */
 322
 323   HOWTO (R_ARM_NONE,            /* type */
 324          0,                     /* rightshift */
 325          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 326          0,                     /* bitsize */
 327          false,                 /* pc_relative */
 328          0,                     /* bitpos */
 329          complain_overflow_dont,/* complain_on_overflow */
 330          bfd_elf_generic_reloc, /* special_function */
 331          "R_ARM_unknown_19",    /* name */
 332          false,                 /* partial_inplace */
 333          0,                     /* src_mask */
 334          0,                     /* dst_mask */
 335          false),                /* pcrel_offset */
 336
 337   /* Relocs used in ARM Linux */
 338
 339   HOWTO (R_ARM_COPY,            /* type */
 340          0,                     /* rightshift */
 341          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 342          32,                    /* bitsize */
 343          false,                 /* pc_relative */
 344          0,                     /* bitpos */
 345          complain_overflow_bitfield,/* complain_on_overflow */
 346          bfd_elf_generic_reloc, /* special_function */
 347          "R_ARM_COPY",          /* name */
 348          true,                  /* partial_inplace */
 349          0xffffffff,            /* src_mask */
 350          0xffffffff,            /* dst_mask */
 351          false),                /* pcrel_offset */
 352
 353   HOWTO (R_ARM_GLOB_DAT,        /* type */
 354          0,                     /* rightshift */
 355          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 356          32,                    /* bitsize */
 357          false,                 /* pc_relative */
 358          0,                     /* bitpos */
 359          complain_overflow_bitfield,/* complain_on_overflow */
 360          bfd_elf_generic_reloc, /* special_function */
 361          "R_ARM_GLOB_DAT",      /* name */
 362          true,                  /* partial_inplace */
 363          0xffffffff,            /* src_mask */
 364          0xffffffff,            /* dst_mask */
 365          false),                /* pcrel_offset */
 366
 367   HOWTO (R_ARM_JUMP_SLOT,       /* type */
 368          0,                     /* rightshift */
 369          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 370          32,                    /* bitsize */
 371          false,                 /* pc_relative */
 372          0,                     /* bitpos */
 373          complain_overflow_bitfield,/* complain_on_overflow */
 374          bfd_elf_generic_reloc, /* special_function */
 375          "R_ARM_JUMP_SLOT",     /* name */
 376          true,                  /* partial_inplace */
 377          0xffffffff,            /* src_mask */
 378          0xffffffff,            /* dst_mask */
 379          false),                /* pcrel_offset */
 380
 381   HOWTO (R_ARM_RELATIVE,        /* type */
 382          0,                     /* rightshift */
 383          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 384          32,                    /* bitsize */
 385          false,                 /* pc_relative */
 386          0,                     /* bitpos */
 387          complain_overflow_bitfield,/* complain_on_overflow */
 388          bfd_elf_generic_reloc, /* special_function */
 389          "R_ARM_RELATIVE",      /* name */
 390          true,                  /* partial_inplace */
 391          0xffffffff,            /* src_mask */
 392          0xffffffff,            /* dst_mask */
 393          false),                /* pcrel_offset */
 394
 395   HOWTO (R_ARM_GOTOFF,          /* type */
 396          0,                     /* rightshift */
 397          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 398          32,                    /* bitsize */
 399          false,                 /* pc_relative */
 400          0,                     /* bitpos */
 401          complain_overflow_bitfield,/* complain_on_overflow */
 402          bfd_elf_generic_reloc, /* special_function */
 403          "R_ARM_GOTOFF",        /* name */
 404          true,                  /* partial_inplace */
 405          0xffffffff,            /* src_mask */
 406          0xffffffff,            /* dst_mask */
 407          false),                /* pcrel_offset */
 408
 409   HOWTO (R_ARM_GOTPC,           /* type */
 410          0,                     /* rightshift */
 411          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 412          32,                    /* bitsize */
 413          true,                  /* pc_relative */
 414          0,                     /* bitpos */
 415          complain_overflow_bitfield,/* complain_on_overflow */
 416          bfd_elf_generic_reloc, /* special_function */
 417          "R_ARM_GOTPC",         /* name */
 418          true,                  /* partial_inplace */
 419          0xffffffff,            /* src_mask */
 420          0xffffffff,            /* dst_mask */
 421          true),                 /* pcrel_offset */
 422
 423   HOWTO (R_ARM_GOT32,           /* type */
 424          0,                     /* rightshift */
 425          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 426          32,                    /* bitsize */
 427          false,                 /* pc_relative */
 428          0,                     /* bitpos */
 429          complain_overflow_bitfield,/* complain_on_overflow */
 430          bfd_elf_generic_reloc, /* special_function */
 431          "R_ARM_GOT32",         /* name */
 432          true,                  /* partial_inplace */
 433          0xffffffff,            /* src_mask */
 434          0xffffffff,            /* dst_mask */
 435          false),                /* pcrel_offset */
 436
 437   HOWTO (R_ARM_PLT32,           /* type */
 438          2,                     /* rightshift */
 439          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 440          26,                    /* bitsize */
 441          true,                  /* pc_relative */
 442          0,                     /* bitpos */
 443          complain_overflow_bitfield,/* complain_on_overflow */
 444          bfd_elf_generic_reloc, /* special_function */
 445          "R_ARM_PLT32",         /* name */
 446          true,                  /* partial_inplace */
 447          0x00ffffff,            /* src_mask */
 448          0x00ffffff,            /* dst_mask */
 449          true),                 /* pcrel_offset */
 450
 451   /* End of relocs used in ARM Linux */
 452
 453   HOWTO (R_ARM_RREL32,          /* type */
 454          0,                     /* rightshift */
 455          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 456          0,                     /* bitsize */
 457          false,                 /* pc_relative */
 458          0,                     /* bitpos */
 459          complain_overflow_dont,/* complain_on_overflow */
 460          bfd_elf_generic_reloc, /* special_function */
 461          "R_ARM_RREL32",        /* name */
 462          false,                 /* partial_inplace */
 463          0,                     /* src_mask */
 464          0,                     /* dst_mask */
 465          false),                /* pcrel_offset */
 466
 467   HOWTO (R_ARM_RABS32,          /* type */
 468          0,                     /* rightshift */
 469          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 470          0,                     /* bitsize */
 471          false,                 /* pc_relative */
 472          0,                     /* bitpos */
 473          complain_overflow_dont,/* complain_on_overflow */
 474          bfd_elf_generic_reloc, /* special_function */
 475          "R_ARM_RABS32",        /* name */
 476          false,                 /* partial_inplace */
 477          0,                     /* src_mask */
 478          0,                     /* dst_mask */
 479          false),                /* pcrel_offset */
 480
 481   HOWTO (R_ARM_RPC24,           /* type */
 482          0,                     /* rightshift */
 483          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 484          0,                     /* bitsize */
 485          false,                 /* pc_relative */
 486          0,                     /* bitpos */
 487          complain_overflow_dont,/* complain_on_overflow */
 488          bfd_elf_generic_reloc, /* special_function */
 489          "R_ARM_RPC24",         /* name */
 490          false,                 /* partial_inplace */
 491          0,                     /* src_mask */
 492          0,                     /* dst_mask */
 493          false),                /* pcrel_offset */
 494
 495   HOWTO (R_ARM_RBASE,           /* type */
 496          0,                     /* rightshift */
 497          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 498          0,                     /* bitsize */
 499          false,                 /* pc_relative */
 500          0,                     /* bitpos */
 501          complain_overflow_dont,/* complain_on_overflow */
 502          bfd_elf_generic_reloc, /* special_function */
 503          "R_ARM_RBASE",         /* name */
 504          false,                 /* partial_inplace */
 505          0,                     /* src_mask */
 506          0,                     /* dst_mask */
 507          false),                /* pcrel_offset */
 508
 509 };
 510
 511   /* GNU extension to record C++ vtable hierarchy */
 512 static reloc_howto_type elf32_arm_vtinherit_howto =
 513   HOWTO (R_ARM_GNU_VTINHERIT, /* type */
 514          0,                     /* rightshift */
 515          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 516          0,                     /* bitsize */
 517          false,                 /* pc_relative */
 518          0,                     /* bitpos */
 519          complain_overflow_dont, /* complain_on_overflow */
 520          NULL,                  /* special_function */
 521          "R_ARM_GNU_VTINHERIT", /* name */
 522          false,                 /* partial_inplace */
 523          0,                     /* src_mask */
 524          0,                     /* dst_mask */
 525          false);                /* pcrel_offset */
 526
 527   /* GNU extension to record C++ vtable member usage */
 528 static reloc_howto_type elf32_arm_vtentry_howto =
 529   HOWTO (R_ARM_GNU_VTENTRY,     /* type */
 530          0,                     /* rightshift */
 531          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 532          0,                     /* bitsize */
 533          false,                 /* pc_relative */
 534          0,                     /* bitpos */
 535          complain_overflow_dont, /* complain_on_overflow */
 536          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
 537          "R_ARM_GNU_VTENTRY",   /* name */
 538          false,                 /* partial_inplace */
 539          0,                     /* src_mask */
 540          0,                     /* dst_mask */
 541          false);                /* pcrel_offset */
 542
 543   /* 12 bit pc relative */
 544 static reloc_howto_type elf32_arm_thm_pc11_howto =
 545   HOWTO (R_ARM_THM_PC11,        /* type */
 546          1,                     /* rightshift */
 547          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 548          11,                    /* bitsize */
 549          true,                  /* pc_relative */
 550          0,                     /* bitpos */
 551          complain_overflow_signed,      /* complain_on_overflow */
 552          bfd_elf_generic_reloc, /* special_function */
 553          "R_ARM_THM_PC11",      /* name */
 554          false,                 /* partial_inplace */
 555          0x000007ff,            /* src_mask */
 556          0x000007ff,            /* dst_mask */
 557          true);                 /* pcrel_offset */
 558
 559   /* 12 bit pc relative */
 560 static reloc_howto_type elf32_arm_thm_pc9_howto =
 561   HOWTO (R_ARM_THM_PC9,         /* type */
 562          1,                     /* rightshift */
 563          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 564          8,                     /* bitsize */
 565          true,                  /* pc_relative */
 566          0,                     /* bitpos */
 567          complain_overflow_signed,      /* complain_on_overflow */
 568          bfd_elf_generic_reloc, /* special_function */
 569          "R_ARM_THM_PC9",       /* name */
 570          false,                 /* partial_inplace */
 571          0x000000ff,            /* src_mask */
 572          0x000000ff,            /* dst_mask */
 573          true);                 /* pcrel_offset */
 574
 575
 576 static void
 577 elf32_arm_info_to_howto_rel (abfd, bfd_reloc, elf_reloc)
 578      bfd * abfd;
 579      arelent * bfd_reloc;
 580      Elf32_Internal_Rel * elf_reloc;
 581 {
 582   unsigned int r_type;
 583
 584   r_type = ELF32_R_TYPE (elf_reloc->r_info);
 585
 586   switch (r_type)
 587     {
 588     case R_ARM_GNU_VTINHERIT:
 589       bfd_reloc->howto = & elf32_arm_vtinherit_howto;
 590       break;
 591
 592     case R_ARM_GNU_VTENTRY:
 593       bfd_reloc->howto = & elf32_arm_vtentry_howto;
 594       break;
 595
 596     case R_ARM_THM_PC11:
 597       bfd_reloc->howto = & elf32_arm_thm_pc11_howto;
 598       break;
 599
 600     case R_ARM_THM_PC9:
 601       bfd_reloc->howto = & elf32_arm_thm_pc9_howto;
 602       break;
 603
 604     default:
 605       if (r_type >= NUM_ELEM (elf32_arm_howto_table))
 606         bfd_reloc->howto = NULL;
 607       else
 608         bfd_reloc->howto = & elf32_arm_howto_table[r_type];
 609       break;
 610     }
 611 }
 612
 613 struct elf32_arm_reloc_map
 614   {
 615     bfd_reloc_code_real_type  bfd_reloc_val;
 616     unsigned char             elf_reloc_val;
 617   };
 618
 619 static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
 620 {
 621   {BFD_RELOC_NONE,                 R_ARM_NONE},
 622   {BFD_RELOC_ARM_PCREL_BRANCH,     R_ARM_PC24},
 623   {BFD_RELOC_32,                   R_ARM_ABS32},
 624   {BFD_RELOC_32_PCREL,             R_ARM_REL32},
 625   {BFD_RELOC_8,                    R_ARM_ABS8},
 626   {BFD_RELOC_16,                   R_ARM_ABS16},
 627   {BFD_RELOC_ARM_OFFSET_IMM,       R_ARM_ABS12},
 628   {BFD_RELOC_ARM_THUMB_OFFSET,     R_ARM_THM_ABS5},
 629   {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22},
 630   {BFD_RELOC_ARM_COPY,             R_ARM_COPY},
 631   {BFD_RELOC_ARM_GLOB_DAT,         R_ARM_GLOB_DAT},
 632   {BFD_RELOC_ARM_JUMP_SLOT,        R_ARM_JUMP_SLOT},
 633   {BFD_RELOC_ARM_RELATIVE,         R_ARM_RELATIVE},
 634   {BFD_RELOC_ARM_GOTOFF,           R_ARM_GOTOFF},
 635   {BFD_RELOC_ARM_GOTPC,            R_ARM_GOTPC},
 636   {BFD_RELOC_ARM_GOT32,            R_ARM_GOT32},
 637   {BFD_RELOC_ARM_PLT32,            R_ARM_PLT32}
 638 };
 639
 640 static reloc_howto_type *
 641 elf32_arm_reloc_type_lookup (abfd, code)
 642      bfd *abfd;
 643      bfd_reloc_code_real_type code;
 644 {
 645   unsigned int i;
 646
 647   switch (code)
 648     {
 649     case BFD_RELOC_VTABLE_INHERIT:
 650       return & elf32_arm_vtinherit_howto;
 651
 652     case BFD_RELOC_VTABLE_ENTRY:
 653       return & elf32_arm_vtentry_howto;
 654
 655     case BFD_RELOC_THUMB_PCREL_BRANCH12:
 656       return & elf32_arm_thm_pc11_howto;
 657
 658     case BFD_RELOC_THUMB_PCREL_BRANCH9:
 659       return & elf32_arm_thm_pc9_howto;
 660
 661     default:
 662       for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
 663         if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
 664           return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val];
 665
 666       return NULL;
 667    }
 668 }
 669
 670 #include "elf32-arm.h"