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
  39
  40 #define ARM_ELF_ABI_VERSION             0
  41 #define ARM_ELF_OS_ABI_VERSION          ELFOSABI_ARM
  42
  43 static reloc_howto_type * elf32_arm_reloc_type_lookup
  44   PARAMS ((bfd * abfd, bfd_reloc_code_real_type code));
  45
  46 static reloc_howto_type elf32_arm_howto_table[] =
  47 {
  48   /* No relocation */
  49   HOWTO (R_ARM_NONE,            /* type */
  50          0,                     /* rightshift */
  51          0,                     /* size (0 = byte, 1 = short, 2 = long) */
  52          0,                     /* bitsize */
  53          false,                 /* pc_relative */
  54          0,                     /* bitpos */
  55          complain_overflow_dont,/* complain_on_overflow */
  56          bfd_elf_generic_reloc, /* special_function */
  57          "R_ARM_NONE",          /* name */
  58          false,                 /* partial_inplace */
  59          0,                     /* src_mask */
  60          0,                     /* dst_mask */
  61          false),                /* pcrel_offset */
  62
  63   HOWTO (R_ARM_PC24,            /* type */
  64          2,                     /* rightshift */
  65          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  66          24,                    /* bitsize */
  67          true,                  /* pc_relative */
  68          0,                     /* bitpos */
  69          complain_overflow_signed,/* complain_on_overflow */
  70          bfd_elf_generic_reloc, /* special_function */
  71          "R_ARM_PC24",          /* name */
  72          false,                 /* partial_inplace */
  73          0x00ffffff,            /* src_mask */
  74          0x00ffffff,            /* dst_mask */
  75          true),                 /* pcrel_offset */
  76
  77   /* 32 bit absolute */
  78   HOWTO (R_ARM_ABS32,           /* type */
  79          0,                     /* rightshift */
  80          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  81          32,                    /* bitsize */
  82          false,                 /* pc_relative */
  83          0,                     /* bitpos */
  84          complain_overflow_bitfield,/* complain_on_overflow */
  85          bfd_elf_generic_reloc, /* special_function */
  86          "R_ARM_ABS32",         /* name */
  87          false,                 /* partial_inplace */
  88          0xffffffff,            /* src_mask */
  89          0xffffffff,            /* dst_mask */
  90          false),                /* pcrel_offset */
  91
  92   /* standard 32bit pc-relative reloc */
  93   HOWTO (R_ARM_REL32,           /* type */
  94          0,                     /* rightshift */
  95          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  96          32,                    /* bitsize */
  97          true,                  /* pc_relative */
  98          0,                     /* bitpos */
  99          complain_overflow_bitfield,/* complain_on_overflow */
 100          bfd_elf_generic_reloc, /* special_function */
 101          "R_ARM_REL32",         /* name */
 102          false,                 /* partial_inplace */
 103          0xffffffff,            /* src_mask */
 104          0xffffffff,            /* dst_mask */
 105          true),                 /* pcrel_offset */
 106
 107   /* 8 bit absolute */
 108   HOWTO (R_ARM_PC13,            /* type */
 109          0,                     /* rightshift */
 110          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 111          8,                     /* bitsize */
 112          false,                 /* pc_relative */
 113          0,                     /* bitpos */
 114          complain_overflow_bitfield,/* complain_on_overflow */
 115          bfd_elf_generic_reloc, /* special_function */
 116          "R_ARM_PC13",          /* name */
 117          false,                 /* partial_inplace */
 118          0x000000ff,            /* src_mask */
 119          0x000000ff,            /* dst_mask */
 120          false),                /* pcrel_offset */
 121
 122    /* 16 bit absolute */
 123   HOWTO (R_ARM_ABS16,           /* type */
 124          0,                     /* rightshift */
 125          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 126          16,                    /* bitsize */
 127          false,                 /* pc_relative */
 128          0,                     /* bitpos */
 129          complain_overflow_bitfield,/* complain_on_overflow */
 130          bfd_elf_generic_reloc, /* special_function */
 131          "R_ARM_ABS16",         /* name */
 132          false,                 /* partial_inplace */
 133          0,                     /* src_mask */
 134          0,                     /* dst_mask */
 135          false),                /* pcrel_offset */
 136
 137   /* 12 bit absolute */
 138   HOWTO (R_ARM_ABS12,           /* type */
 139          0,                     /* rightshift */
 140          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 141          12,                    /* bitsize */
 142          false,                 /* pc_relative */
 143          0,                     /* bitpos */
 144          complain_overflow_bitfield,/* complain_on_overflow */
 145          bfd_elf_generic_reloc, /* special_function */
 146          "R_ARM_ABS12",         /* name */
 147          false,                 /* partial_inplace */
 148          0x000008ff,            /* src_mask */
 149          0x000008ff,            /* dst_mask */
 150          false),                /* pcrel_offset */
 151
 152   HOWTO (R_ARM_THM_ABS5,        /* type */
 153          6,                     /* rightshift */
 154          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 155          5,                     /* bitsize */
 156          false,                 /* pc_relative */
 157          0,                     /* bitpos */
 158          complain_overflow_bitfield,/* complain_on_overflow */
 159          bfd_elf_generic_reloc, /* special_function */
 160          "R_ARM_THM_ABS5",      /* name */
 161          false,                 /* partial_inplace */
 162          0x000007e0,            /* src_mask */
 163          0x000007e0,            /* dst_mask */
 164          false),                /* pcrel_offset */
 165
 166   /* 8 bit absolute */
 167   HOWTO (R_ARM_ABS8,            /* type */
 168          0,                     /* rightshift */
 169          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 170          8,                     /* bitsize */
 171          false,                 /* pc_relative */
 172          0,                     /* bitpos */
 173          complain_overflow_bitfield,/* complain_on_overflow */
 174          bfd_elf_generic_reloc, /* special_function */
 175          "R_ARM_ABS8",          /* name */
 176          false,                 /* partial_inplace */
 177          0x000000ff,            /* src_mask */
 178          0x000000ff,            /* dst_mask */
 179          false),                /* pcrel_offset */
 180
 181   HOWTO (R_ARM_SBREL32,         /* type */
 182          0,                     /* rightshift */
 183          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 184          0,                     /* bitsize */
 185          false,                 /* pc_relative */
 186          0,                     /* bitpos */
 187          complain_overflow_dont,/* complain_on_overflow */
 188          bfd_elf_generic_reloc, /* special_function */
 189          "R_ARM_SBREL32",       /* name */
 190          false,                 /* partial_inplace */
 191          0,                     /* src_mask */
 192          0,                     /* dst_mask */
 193          false),                /* pcrel_offset */
 194
 195   HOWTO (R_ARM_THM_PC22,        /* type */
 196          1,                     /* rightshift */
 197          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 198          23,                    /* bitsize */
 199          true,                  /* pc_relative */
 200          0,                     /* bitpos */
 201          complain_overflow_signed,/* complain_on_overflow */
 202          bfd_elf_generic_reloc, /* special_function */
 203          "R_ARM_THM_PC22",      /* name */
 204          false,                 /* partial_inplace */
 205          0x07ff07ff,            /* src_mask */
 206          0x07ff07ff,            /* dst_mask */
 207          true),                 /* pcrel_offset */
 208
 209   HOWTO (R_ARM_THM_PC8,         /* type */
 210          1,                     /* rightshift */
 211          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 212          8,                     /* bitsize */
 213          true,                  /* pc_relative */
 214          0,                     /* bitpos */
 215          complain_overflow_signed,/* complain_on_overflow */
 216          bfd_elf_generic_reloc, /* special_function */
 217          "R_ARM_THM_PC8",       /* name */
 218          false,                 /* partial_inplace */
 219          0x000000ff,            /* src_mask */
 220          0x000000ff,            /* dst_mask */
 221          true),                 /* pcrel_offset */
 222
 223   HOWTO (R_ARM_AMP_VCALL9,      /* type */
 224          1,                     /* rightshift */
 225          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 226          8,                     /* bitsize */
 227          true,                  /* pc_relative */
 228          0,                     /* bitpos */
 229          complain_overflow_signed,/* complain_on_overflow */
 230          bfd_elf_generic_reloc, /* special_function */
 231          "R_ARM_AMP_VCALL9",    /* name */
 232          false,                 /* partial_inplace */
 233          0x000000ff,            /* src_mask */
 234          0x000000ff,            /* dst_mask */
 235          true),                 /* pcrel_offset */
 236
 237   HOWTO (R_ARM_SWI24,           /* type */
 238          0,                     /* rightshift */
 239          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 240          0,                     /* bitsize */
 241          false,                 /* pc_relative */
 242          0,                     /* bitpos */
 243          complain_overflow_signed,/* complain_on_overflow */
 244          bfd_elf_generic_reloc, /* special_function */
 245          "R_ARM_SWI24",         /* name */
 246          false,                 /* partial_inplace */
 247          0x00000000,            /* src_mask */
 248          0x00000000,            /* dst_mask */
 249          false),                /* pcrel_offset */
 250
 251   HOWTO (R_ARM_THM_SWI8,        /* type */
 252          0,                     /* rightshift */
 253          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 254          0,                     /* bitsize */
 255          false,                 /* pc_relative */
 256          0,                     /* bitpos */
 257          complain_overflow_signed,/* complain_on_overflow */
 258          bfd_elf_generic_reloc, /* special_function */
 259          "R_ARM_SWI8",          /* name */
 260          false,                 /* partial_inplace */
 261          0x00000000,            /* src_mask */
 262          0x00000000,            /* dst_mask */
 263          false),                /* pcrel_offset */
 264
 265   /* These next two relocs are defined, but I do not know what they do.  */
 266
 267   HOWTO (R_ARM_XPC25,           /* type */
 268          0,                     /* rightshift */
 269          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 270          0,                     /* bitsize */
 271          false,                 /* pc_relative */
 272          0,                     /* bitpos */
 273          complain_overflow_signed,/* complain_on_overflow */
 274          bfd_elf_generic_reloc, /* special_function */
 275          "R_ARM_XPC25",         /* name */
 276          false,                 /* partial_inplace */
 277          0x00000000,            /* src_mask */
 278          0x00000000,            /* dst_mask */
 279          false),                /* pcrel_offset */
 280
 281   HOWTO (R_ARM_THM_XPC22,       /* type */
 282          0,                     /* rightshift */
 283          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 284          0,                     /* bitsize */
 285          false,                 /* pc_relative */
 286          0,                     /* bitpos */
 287          complain_overflow_signed,/* complain_on_overflow */
 288          bfd_elf_generic_reloc, /* special_function */
 289          "R_ARM_THM_XPC22",     /* name */
 290          false,                 /* partial_inplace */
 291          0x00000000,            /* src_mask */
 292          0x00000000,            /* dst_mask */
 293          false),                /* pcrel_offset */
 294
 295   /* These next three relocs are not defined, but we need to fill the space.  */
 296
 297   HOWTO (R_ARM_NONE,            /* type */
 298          0,                     /* rightshift */
 299          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 300          0,                     /* bitsize */
 301          false,                 /* pc_relative */
 302          0,                     /* bitpos */
 303          complain_overflow_dont,/* complain_on_overflow */
 304          bfd_elf_generic_reloc, /* special_function */
 305          "R_ARM_unknown_17",    /* name */
 306          false,                 /* partial_inplace */
 307          0,                     /* src_mask */
 308          0,                     /* dst_mask */
 309          false),                /* pcrel_offset */
 310
 311   HOWTO (R_ARM_NONE,            /* type */
 312          0,                     /* rightshift */
 313          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 314          0,                     /* bitsize */
 315          false,                 /* pc_relative */
 316          0,                     /* bitpos */
 317          complain_overflow_dont,/* complain_on_overflow */
 318          bfd_elf_generic_reloc, /* special_function */
 319          "R_ARM_unknown_18",    /* name */
 320          false,                 /* partial_inplace */
 321          0,                     /* src_mask */
 322          0,                     /* dst_mask */
 323          false),                /* pcrel_offset */
 324
 325   HOWTO (R_ARM_NONE,            /* type */
 326          0,                     /* rightshift */
 327          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 328          0,                     /* bitsize */
 329          false,                 /* pc_relative */
 330          0,                     /* bitpos */
 331          complain_overflow_dont,/* complain_on_overflow */
 332          bfd_elf_generic_reloc, /* special_function */
 333          "R_ARM_unknown_19",    /* name */
 334          false,                 /* partial_inplace */
 335          0,                     /* src_mask */
 336          0,                     /* dst_mask */
 337          false),                /* pcrel_offset */
 338
 339   /* Relocs used in ARM Linux */
 340
 341   HOWTO (R_ARM_COPY,            /* type */
 342          0,                     /* rightshift */
 343          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 344          32,                    /* bitsize */
 345          false,                 /* pc_relative */
 346          0,                     /* bitpos */
 347          complain_overflow_bitfield,/* complain_on_overflow */
 348          bfd_elf_generic_reloc, /* special_function */
 349          "R_ARM_COPY",          /* name */
 350          true,                  /* partial_inplace */
 351          0xffffffff,            /* src_mask */
 352          0xffffffff,            /* dst_mask */
 353          false),                /* pcrel_offset */
 354
 355   HOWTO (R_ARM_GLOB_DAT,        /* type */
 356          0,                     /* rightshift */
 357          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 358          32,                    /* bitsize */
 359          false,                 /* pc_relative */
 360          0,                     /* bitpos */
 361          complain_overflow_bitfield,/* complain_on_overflow */
 362          bfd_elf_generic_reloc, /* special_function */
 363          "R_ARM_GLOB_DAT",      /* name */
 364          true,                  /* partial_inplace */
 365          0xffffffff,            /* src_mask */
 366          0xffffffff,            /* dst_mask */
 367          false),                /* pcrel_offset */
 368
 369   HOWTO (R_ARM_JUMP_SLOT,       /* type */
 370          0,                     /* rightshift */
 371          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 372          32,                    /* bitsize */
 373          false,                 /* pc_relative */
 374          0,                     /* bitpos */
 375          complain_overflow_bitfield,/* complain_on_overflow */
 376          bfd_elf_generic_reloc, /* special_function */
 377          "R_ARM_JUMP_SLOT",     /* name */
 378          true,                  /* partial_inplace */
 379          0xffffffff,            /* src_mask */
 380          0xffffffff,            /* dst_mask */
 381          false),                /* pcrel_offset */
 382
 383   HOWTO (R_ARM_RELATIVE,        /* type */
 384          0,                     /* rightshift */
 385          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 386          32,                    /* bitsize */
 387          false,                 /* pc_relative */
 388          0,                     /* bitpos */
 389          complain_overflow_bitfield,/* complain_on_overflow */
 390          bfd_elf_generic_reloc, /* special_function */
 391          "R_ARM_RELATIVE",      /* name */
 392          true,                  /* partial_inplace */
 393          0xffffffff,            /* src_mask */
 394          0xffffffff,            /* dst_mask */
 395          false),                /* pcrel_offset */
 396
 397   HOWTO (R_ARM_GOTOFF,          /* type */
 398          0,                     /* rightshift */
 399          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 400          32,                    /* bitsize */
 401          false,                 /* pc_relative */
 402          0,                     /* bitpos */
 403          complain_overflow_bitfield,/* complain_on_overflow */
 404          bfd_elf_generic_reloc, /* special_function */
 405          "R_ARM_GOTOFF",        /* name */
 406          true,                  /* partial_inplace */
 407          0xffffffff,            /* src_mask */
 408          0xffffffff,            /* dst_mask */
 409          false),                /* pcrel_offset */
 410
 411   HOWTO (R_ARM_GOTPC,           /* type */
 412          0,                     /* rightshift */
 413          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 414          32,                    /* bitsize */
 415          true,                  /* pc_relative */
 416          0,                     /* bitpos */
 417          complain_overflow_bitfield,/* complain_on_overflow */
 418          bfd_elf_generic_reloc, /* special_function */
 419          "R_ARM_GOTPC",         /* name */
 420          true,                  /* partial_inplace */
 421          0xffffffff,            /* src_mask */
 422          0xffffffff,            /* dst_mask */
 423          true),                 /* pcrel_offset */
 424
 425   HOWTO (R_ARM_GOT32,           /* type */
 426          0,                     /* rightshift */
 427          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 428          32,                    /* bitsize */
 429          false,                 /* pc_relative */
 430          0,                     /* bitpos */
 431          complain_overflow_bitfield,/* complain_on_overflow */
 432          bfd_elf_generic_reloc, /* special_function */
 433          "R_ARM_GOT32",         /* name */
 434          true,                  /* partial_inplace */
 435          0xffffffff,            /* src_mask */
 436          0xffffffff,            /* dst_mask */
 437          false),                /* pcrel_offset */
 438
 439   HOWTO (R_ARM_PLT32,           /* type */
 440          2,                     /* rightshift */
 441          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 442          26,                    /* bitsize */
 443          true,                  /* pc_relative */
 444          0,                     /* bitpos */
 445          complain_overflow_bitfield,/* complain_on_overflow */
 446          bfd_elf_generic_reloc, /* special_function */
 447          "R_ARM_PLT32",         /* name */
 448          true,                  /* partial_inplace */
 449          0x00ffffff,            /* src_mask */
 450          0x00ffffff,            /* dst_mask */
 451          true),                 /* pcrel_offset */
 452
 453   /* End of relocs used in ARM Linux */
 454
 455   HOWTO (R_ARM_RREL32,          /* type */
 456          0,                     /* rightshift */
 457          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 458          0,                     /* bitsize */
 459          false,                 /* pc_relative */
 460          0,                     /* bitpos */
 461          complain_overflow_dont,/* complain_on_overflow */
 462          bfd_elf_generic_reloc, /* special_function */
 463          "R_ARM_RREL32",        /* name */
 464          false,                 /* partial_inplace */
 465          0,                     /* src_mask */
 466          0,                     /* dst_mask */
 467          false),                /* pcrel_offset */
 468
 469   HOWTO (R_ARM_RABS32,          /* type */
 470          0,                     /* rightshift */
 471          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 472          0,                     /* bitsize */
 473          false,                 /* pc_relative */
 474          0,                     /* bitpos */
 475          complain_overflow_dont,/* complain_on_overflow */
 476          bfd_elf_generic_reloc, /* special_function */
 477          "R_ARM_RABS32",        /* name */
 478          false,                 /* partial_inplace */
 479          0,                     /* src_mask */
 480          0,                     /* dst_mask */
 481          false),                /* pcrel_offset */
 482
 483   HOWTO (R_ARM_RPC24,           /* type */
 484          0,                     /* rightshift */
 485          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 486          0,                     /* bitsize */
 487          false,                 /* pc_relative */
 488          0,                     /* bitpos */
 489          complain_overflow_dont,/* complain_on_overflow */
 490          bfd_elf_generic_reloc, /* special_function */
 491          "R_ARM_RPC24",         /* name */
 492          false,                 /* partial_inplace */
 493          0,                     /* src_mask */
 494          0,                     /* dst_mask */
 495          false),                /* pcrel_offset */
 496
 497   HOWTO (R_ARM_RBASE,           /* type */
 498          0,                     /* rightshift */
 499          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 500          0,                     /* bitsize */
 501          false,                 /* pc_relative */
 502          0,                     /* bitpos */
 503          complain_overflow_dont,/* complain_on_overflow */
 504          bfd_elf_generic_reloc, /* special_function */
 505          "R_ARM_RBASE",         /* name */
 506          false,                 /* partial_inplace */
 507          0,                     /* src_mask */
 508          0,                     /* dst_mask */
 509          false),                /* pcrel_offset */
 510
 511 };
 512
 513   /* GNU extension to record C++ vtable hierarchy */
 514 static reloc_howto_type elf32_arm_vtinherit_howto =
 515   HOWTO (R_ARM_GNU_VTINHERIT, /* type */
 516          0,                     /* rightshift */
 517          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 518          0,                     /* bitsize */
 519          false,                 /* pc_relative */
 520          0,                     /* bitpos */
 521          complain_overflow_dont, /* complain_on_overflow */
 522          NULL,                  /* special_function */
 523          "R_ARM_GNU_VTINHERIT", /* name */
 524          false,                 /* partial_inplace */
 525          0,                     /* src_mask */
 526          0,                     /* dst_mask */
 527          false);                /* pcrel_offset */
 528
 529   /* GNU extension to record C++ vtable member usage */
 530 static reloc_howto_type elf32_arm_vtentry_howto =
 531   HOWTO (R_ARM_GNU_VTENTRY,     /* type */
 532          0,                     /* rightshift */
 533          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 534          0,                     /* bitsize */
 535          false,                 /* pc_relative */
 536          0,                     /* bitpos */
 537          complain_overflow_dont, /* complain_on_overflow */
 538          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
 539          "R_ARM_GNU_VTENTRY",   /* name */
 540          false,                 /* partial_inplace */
 541          0,                     /* src_mask */
 542          0,                     /* dst_mask */
 543          false);                /* pcrel_offset */
 544
 545   /* 12 bit pc relative */
 546 static reloc_howto_type elf32_arm_thm_pc11_howto =
 547   HOWTO (R_ARM_THM_PC11,        /* type */
 548          1,                     /* rightshift */
 549          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 550          11,                    /* bitsize */
 551          true,                  /* pc_relative */
 552          0,                     /* bitpos */
 553          complain_overflow_signed,      /* complain_on_overflow */
 554          bfd_elf_generic_reloc, /* special_function */
 555          "R_ARM_THM_PC11",      /* name */
 556          false,                 /* partial_inplace */
 557          0x000007ff,            /* src_mask */
 558          0x000007ff,            /* dst_mask */
 559          true);                 /* pcrel_offset */
 560
 561   /* 12 bit pc relative */
 562 static reloc_howto_type elf32_arm_thm_pc9_howto =
 563   HOWTO (R_ARM_THM_PC9,         /* type */
 564          1,                     /* rightshift */
 565          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 566          8,                     /* bitsize */
 567          true,                  /* pc_relative */
 568          0,                     /* bitpos */
 569          complain_overflow_signed,      /* complain_on_overflow */
 570          bfd_elf_generic_reloc, /* special_function */
 571          "R_ARM_THM_PC9",       /* name */
 572          false,                 /* partial_inplace */
 573          0x000000ff,            /* src_mask */
 574          0x000000ff,            /* dst_mask */
 575          true);                 /* pcrel_offset */
 576
 577
 578 static void
 579 elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc)
 580      bfd * abfd;
 581      arelent * bfd_reloc;
 582      Elf32_Internal_Rel * elf_reloc;
 583 {
 584   unsigned int r_type;
 585
 586   r_type = ELF32_R_TYPE (elf_reloc->r_info);
 587
 588   switch (r_type)
 589     {
 590     case R_ARM_GNU_VTINHERIT:
 591       bfd_reloc->howto = & elf32_arm_vtinherit_howto;
 592       break;
 593
 594     case R_ARM_GNU_VTENTRY:
 595       bfd_reloc->howto = & elf32_arm_vtentry_howto;
 596       break;
 597
 598     case R_ARM_THM_PC11:
 599       bfd_reloc->howto = & elf32_arm_thm_pc11_howto;
 600       break;
 601
 602     case R_ARM_THM_PC9:
 603       bfd_reloc->howto = & elf32_arm_thm_pc9_howto;
 604       break;
 605
 606     default:
 607       if (r_type >= NUM_ELEM (elf32_arm_howto_table))
 608         bfd_reloc->howto = NULL;
 609       else
 610         bfd_reloc->howto = & elf32_arm_howto_table[r_type];
 611       break;
 612     }
 613 }
 614
 615 struct elf32_arm_reloc_map
 616   {
 617     bfd_reloc_code_real_type  bfd_reloc_val;
 618     unsigned char             elf_reloc_val;
 619   };
 620
 621 static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
 622 {
 623   {BFD_RELOC_NONE,                 R_ARM_NONE},
 624   {BFD_RELOC_ARM_PCREL_BRANCH,     R_ARM_PC24},
 625   {BFD_RELOC_32,                   R_ARM_ABS32},
 626   {BFD_RELOC_32_PCREL,             R_ARM_REL32},
 627   {BFD_RELOC_8,                    R_ARM_ABS8},
 628   {BFD_RELOC_16,                   R_ARM_ABS16},
 629   {BFD_RELOC_ARM_OFFSET_IMM,       R_ARM_ABS12},
 630   {BFD_RELOC_ARM_THUMB_OFFSET,     R_ARM_THM_ABS5},
 631   {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22},
 632   {BFD_RELOC_ARM_COPY,             R_ARM_COPY},
 633   {BFD_RELOC_ARM_GLOB_DAT,         R_ARM_GLOB_DAT},
 634   {BFD_RELOC_ARM_JUMP_SLOT,        R_ARM_JUMP_SLOT},
 635   {BFD_RELOC_ARM_RELATIVE,         R_ARM_RELATIVE},
 636   {BFD_RELOC_ARM_GOTOFF,           R_ARM_GOTOFF},
 637   {BFD_RELOC_ARM_GOTPC,            R_ARM_GOTPC},
 638   {BFD_RELOC_ARM_GOT32,            R_ARM_GOT32},
 639   {BFD_RELOC_ARM_PLT32,            R_ARM_PLT32}
 640 };
 641
 642 static reloc_howto_type *
 643 elf32_arm_reloc_type_lookup (abfd, code)
 644      bfd *abfd;
 645      bfd_reloc_code_real_type code;
 646 {
 647   unsigned int i;
 648
 649   switch (code)
 650     {
 651     case BFD_RELOC_VTABLE_INHERIT:
 652       return & elf32_arm_vtinherit_howto;
 653
 654     case BFD_RELOC_VTABLE_ENTRY:
 655       return & elf32_arm_vtentry_howto;
 656
 657     case BFD_RELOC_THUMB_PCREL_BRANCH12:
 658       return & elf32_arm_thm_pc11_howto;
 659
 660     case BFD_RELOC_THUMB_PCREL_BRANCH9:
 661       return & elf32_arm_thm_pc9_howto;
 662
 663     default:
 664       for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
 665         if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
 666           return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val];
 667
 668       return NULL;
 669    }
 670 }
 671
 672 #include "elf32-arm.h"