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 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
  47    R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
  48    in that slot. */
  49
  50 static reloc_howto_type elf32_arm_howto_table[] =
  51 {
  52   /* No relocation */
  53   HOWTO (R_ARM_NONE,            /* type */
  54          0,                     /* rightshift */
  55          0,                     /* size (0 = byte, 1 = short, 2 = long) */
  56          0,                     /* bitsize */
  57          false,                 /* pc_relative */
  58          0,                     /* bitpos */
  59          complain_overflow_dont,/* complain_on_overflow */
  60          bfd_elf_generic_reloc, /* special_function */
  61          "R_ARM_NONE",          /* name */
  62          false,                 /* partial_inplace */
  63          0,                     /* src_mask */
  64          0,                     /* dst_mask */
  65          false),                /* pcrel_offset */
  66
  67   HOWTO (R_ARM_PC24,            /* type */
  68          2,                     /* rightshift */
  69          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  70          24,                    /* bitsize */
  71          true,                  /* pc_relative */
  72          0,                     /* bitpos */
  73          complain_overflow_signed,/* complain_on_overflow */
  74          bfd_elf_generic_reloc, /* special_function */
  75          "R_ARM_PC24",          /* name */
  76          false,                 /* partial_inplace */
  77          0x00ffffff,            /* src_mask */
  78          0x00ffffff,            /* dst_mask */
  79          true),                 /* pcrel_offset */
  80
  81   /* 32 bit absolute */
  82   HOWTO (R_ARM_ABS32,           /* type */
  83          0,                     /* rightshift */
  84          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  85          32,                    /* bitsize */
  86          false,                 /* pc_relative */
  87          0,                     /* bitpos */
  88          complain_overflow_bitfield,/* complain_on_overflow */
  89          bfd_elf_generic_reloc, /* special_function */
  90          "R_ARM_ABS32",         /* name */
  91          false,                 /* partial_inplace */
  92          0xffffffff,            /* src_mask */
  93          0xffffffff,            /* dst_mask */
  94          false),                /* pcrel_offset */
  95
  96   /* standard 32bit pc-relative reloc */
  97   HOWTO (R_ARM_REL32,           /* type */
  98          0,                     /* rightshift */
  99          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 100          32,                    /* bitsize */
 101          true,                  /* pc_relative */
 102          0,                     /* bitpos */
 103          complain_overflow_bitfield,/* complain_on_overflow */
 104          bfd_elf_generic_reloc, /* special_function */
 105          "R_ARM_REL32",         /* name */
 106          false,                 /* partial_inplace */
 107          0xffffffff,            /* src_mask */
 108          0xffffffff,            /* dst_mask */
 109          true),                 /* pcrel_offset */
 110
 111   /* 8 bit absolute */
 112   HOWTO (R_ARM_PC13,            /* type */
 113          0,                     /* rightshift */
 114          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 115          8,                     /* bitsize */
 116          false,                 /* pc_relative */
 117          0,                     /* bitpos */
 118          complain_overflow_bitfield,/* complain_on_overflow */
 119          bfd_elf_generic_reloc, /* special_function */
 120          "R_ARM_PC13",          /* name */
 121          false,                 /* partial_inplace */
 122          0x000000ff,            /* src_mask */
 123          0x000000ff,            /* dst_mask */
 124          false),                /* pcrel_offset */
 125
 126    /* 16 bit absolute */
 127   HOWTO (R_ARM_ABS16,           /* type */
 128          0,                     /* rightshift */
 129          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 130          16,                    /* bitsize */
 131          false,                 /* pc_relative */
 132          0,                     /* bitpos */
 133          complain_overflow_bitfield,/* complain_on_overflow */
 134          bfd_elf_generic_reloc, /* special_function */
 135          "R_ARM_ABS16",         /* name */
 136          false,                 /* partial_inplace */
 137          0,                     /* src_mask */
 138          0,                     /* dst_mask */
 139          false),                /* pcrel_offset */
 140
 141   /* 12 bit absolute */
 142   HOWTO (R_ARM_ABS12,           /* type */
 143          0,                     /* rightshift */
 144          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 145          12,                    /* bitsize */
 146          false,                 /* pc_relative */
 147          0,                     /* bitpos */
 148          complain_overflow_bitfield,/* complain_on_overflow */
 149          bfd_elf_generic_reloc, /* special_function */
 150          "R_ARM_ABS12",         /* name */
 151          false,                 /* partial_inplace */
 152          0x000008ff,            /* src_mask */
 153          0x000008ff,            /* dst_mask */
 154          false),                /* pcrel_offset */
 155
 156   HOWTO (R_ARM_THM_ABS5,        /* type */
 157          6,                     /* rightshift */
 158          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 159          5,                     /* bitsize */
 160          false,                 /* pc_relative */
 161          0,                     /* bitpos */
 162          complain_overflow_bitfield,/* complain_on_overflow */
 163          bfd_elf_generic_reloc, /* special_function */
 164          "R_ARM_THM_ABS5",      /* name */
 165          false,                 /* partial_inplace */
 166          0x000007e0,            /* src_mask */
 167          0x000007e0,            /* dst_mask */
 168          false),                /* pcrel_offset */
 169
 170   /* 8 bit absolute */
 171   HOWTO (R_ARM_ABS8,            /* type */
 172          0,                     /* rightshift */
 173          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 174          8,                     /* bitsize */
 175          false,                 /* pc_relative */
 176          0,                     /* bitpos */
 177          complain_overflow_bitfield,/* complain_on_overflow */
 178          bfd_elf_generic_reloc, /* special_function */
 179          "R_ARM_ABS8",          /* name */
 180          false,                 /* partial_inplace */
 181          0x000000ff,            /* src_mask */
 182          0x000000ff,            /* dst_mask */
 183          false),                /* pcrel_offset */
 184
 185   HOWTO (R_ARM_SBREL32,         /* type */
 186          0,                     /* rightshift */
 187          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 188          0,                     /* bitsize */
 189          false,                 /* pc_relative */
 190          0,                     /* bitpos */
 191          complain_overflow_dont,/* complain_on_overflow */
 192          bfd_elf_generic_reloc, /* special_function */
 193          "R_ARM_SBREL32",       /* name */
 194          false,                 /* partial_inplace */
 195          0,                     /* src_mask */
 196          0,                     /* dst_mask */
 197          false),                /* pcrel_offset */
 198
 199   HOWTO (R_ARM_THM_PC22,        /* type */
 200          1,                     /* rightshift */
 201          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 202          23,                    /* bitsize */
 203          true,                  /* pc_relative */
 204          0,                     /* bitpos */
 205          complain_overflow_signed,/* complain_on_overflow */
 206          bfd_elf_generic_reloc, /* special_function */
 207          "R_ARM_THM_PC22",      /* name */
 208          false,                 /* partial_inplace */
 209          0x07ff07ff,            /* src_mask */
 210          0x07ff07ff,            /* dst_mask */
 211          true),                 /* pcrel_offset */
 212
 213   HOWTO (R_ARM_THM_PC8,         /* type */
 214          1,                     /* rightshift */
 215          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 216          8,                     /* bitsize */
 217          true,                  /* pc_relative */
 218          0,                     /* bitpos */
 219          complain_overflow_signed,/* complain_on_overflow */
 220          bfd_elf_generic_reloc, /* special_function */
 221          "R_ARM_THM_PC8",       /* name */
 222          false,                 /* partial_inplace */
 223          0x000000ff,            /* src_mask */
 224          0x000000ff,            /* dst_mask */
 225          true),                 /* pcrel_offset */
 226
 227   HOWTO (R_ARM_AMP_VCALL9,      /* type */
 228          1,                     /* rightshift */
 229          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 230          8,                     /* bitsize */
 231          true,                  /* pc_relative */
 232          0,                     /* bitpos */
 233          complain_overflow_signed,/* complain_on_overflow */
 234          bfd_elf_generic_reloc, /* special_function */
 235          "R_ARM_AMP_VCALL9",    /* name */
 236          false,                 /* partial_inplace */
 237          0x000000ff,            /* src_mask */
 238          0x000000ff,            /* dst_mask */
 239          true),                 /* pcrel_offset */
 240
 241   HOWTO (R_ARM_SWI24,           /* type */
 242          0,                     /* rightshift */
 243          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 244          0,                     /* bitsize */
 245          false,                 /* pc_relative */
 246          0,                     /* bitpos */
 247          complain_overflow_signed,/* complain_on_overflow */
 248          bfd_elf_generic_reloc, /* special_function */
 249          "R_ARM_SWI24",         /* name */
 250          false,                 /* partial_inplace */
 251          0x00000000,            /* src_mask */
 252          0x00000000,            /* dst_mask */
 253          false),                /* pcrel_offset */
 254
 255   HOWTO (R_ARM_THM_SWI8,        /* type */
 256          0,                     /* rightshift */
 257          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 258          0,                     /* bitsize */
 259          false,                 /* pc_relative */
 260          0,                     /* bitpos */
 261          complain_overflow_signed,/* complain_on_overflow */
 262          bfd_elf_generic_reloc, /* special_function */
 263          "R_ARM_SWI8",          /* name */
 264          false,                 /* partial_inplace */
 265          0x00000000,            /* src_mask */
 266          0x00000000,            /* dst_mask */
 267          false),                /* pcrel_offset */
 268
 269   /* BLX instruction for the ARM.  */
 270   HOWTO (R_ARM_XPC25,           /* type */
 271          2,                     /* rightshift */
 272          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 273          25,                    /* bitsize */
 274          true,                  /* pc_relative */
 275          0,                     /* bitpos */
 276          complain_overflow_signed,/* complain_on_overflow */
 277          bfd_elf_generic_reloc, /* special_function */
 278          "R_ARM_XPC25",         /* name */
 279          false,                 /* partial_inplace */
 280          0x00ffffff,            /* src_mask */
 281          0x00ffffff,            /* dst_mask */
 282          true),                 /* pcrel_offset */
 283
 284   /* BLX instruction for the Thumb.  */
 285   HOWTO (R_ARM_THM_XPC22,       /* type */
 286          2,                     /* rightshift */
 287          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 288          22,                    /* bitsize */
 289          true,                  /* pc_relative */
 290          0,                     /* bitpos */
 291          complain_overflow_signed,/* complain_on_overflow */
 292          bfd_elf_generic_reloc, /* special_function */
 293          "R_ARM_THM_XPC22",     /* name */
 294          false,                 /* partial_inplace */
 295          0x07ff07ff,            /* src_mask */
 296          0x07ff07ff,            /* dst_mask */
 297          true),                 /* pcrel_offset */
 298
 299   /* These next three relocs are not defined, but we need to fill the space.  */
 300
 301   HOWTO (R_ARM_NONE,            /* type */
 302          0,                     /* rightshift */
 303          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 304          0,                     /* bitsize */
 305          false,                 /* pc_relative */
 306          0,                     /* bitpos */
 307          complain_overflow_dont,/* complain_on_overflow */
 308          bfd_elf_generic_reloc, /* special_function */
 309          "R_ARM_unknown_17",    /* name */
 310          false,                 /* partial_inplace */
 311          0,                     /* src_mask */
 312          0,                     /* dst_mask */
 313          false),                /* pcrel_offset */
 314
 315   HOWTO (R_ARM_NONE,            /* type */
 316          0,                     /* rightshift */
 317          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 318          0,                     /* bitsize */
 319          false,                 /* pc_relative */
 320          0,                     /* bitpos */
 321          complain_overflow_dont,/* complain_on_overflow */
 322          bfd_elf_generic_reloc, /* special_function */
 323          "R_ARM_unknown_18",    /* name */
 324          false,                 /* partial_inplace */
 325          0,                     /* src_mask */
 326          0,                     /* dst_mask */
 327          false),                /* pcrel_offset */
 328
 329   HOWTO (R_ARM_NONE,            /* type */
 330          0,                     /* rightshift */
 331          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 332          0,                     /* bitsize */
 333          false,                 /* pc_relative */
 334          0,                     /* bitpos */
 335          complain_overflow_dont,/* complain_on_overflow */
 336          bfd_elf_generic_reloc, /* special_function */
 337          "R_ARM_unknown_19",    /* name */
 338          false,                 /* partial_inplace */
 339          0,                     /* src_mask */
 340          0,                     /* dst_mask */
 341          false),                /* pcrel_offset */
 342
 343   /* Relocs used in ARM Linux */
 344
 345   HOWTO (R_ARM_COPY,            /* type */
 346          0,                     /* rightshift */
 347          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 348          32,                    /* bitsize */
 349          false,                 /* pc_relative */
 350          0,                     /* bitpos */
 351          complain_overflow_bitfield,/* complain_on_overflow */
 352          bfd_elf_generic_reloc, /* special_function */
 353          "R_ARM_COPY",          /* name */
 354          true,                  /* partial_inplace */
 355          0xffffffff,            /* src_mask */
 356          0xffffffff,            /* dst_mask */
 357          false),                /* pcrel_offset */
 358
 359   HOWTO (R_ARM_GLOB_DAT,        /* type */
 360          0,                     /* rightshift */
 361          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 362          32,                    /* bitsize */
 363          false,                 /* pc_relative */
 364          0,                     /* bitpos */
 365          complain_overflow_bitfield,/* complain_on_overflow */
 366          bfd_elf_generic_reloc, /* special_function */
 367          "R_ARM_GLOB_DAT",      /* name */
 368          true,                  /* partial_inplace */
 369          0xffffffff,            /* src_mask */
 370          0xffffffff,            /* dst_mask */
 371          false),                /* pcrel_offset */
 372
 373   HOWTO (R_ARM_JUMP_SLOT,       /* type */
 374          0,                     /* rightshift */
 375          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 376          32,                    /* bitsize */
 377          false,                 /* pc_relative */
 378          0,                     /* bitpos */
 379          complain_overflow_bitfield,/* complain_on_overflow */
 380          bfd_elf_generic_reloc, /* special_function */
 381          "R_ARM_JUMP_SLOT",     /* name */
 382          true,                  /* partial_inplace */
 383          0xffffffff,            /* src_mask */
 384          0xffffffff,            /* dst_mask */
 385          false),                /* pcrel_offset */
 386
 387   HOWTO (R_ARM_RELATIVE,        /* type */
 388          0,                     /* rightshift */
 389          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 390          32,                    /* bitsize */
 391          false,                 /* pc_relative */
 392          0,                     /* bitpos */
 393          complain_overflow_bitfield,/* complain_on_overflow */
 394          bfd_elf_generic_reloc, /* special_function */
 395          "R_ARM_RELATIVE",      /* name */
 396          true,                  /* partial_inplace */
 397          0xffffffff,            /* src_mask */
 398          0xffffffff,            /* dst_mask */
 399          false),                /* pcrel_offset */
 400
 401   HOWTO (R_ARM_GOTOFF,          /* type */
 402          0,                     /* rightshift */
 403          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 404          32,                    /* bitsize */
 405          false,                 /* pc_relative */
 406          0,                     /* bitpos */
 407          complain_overflow_bitfield,/* complain_on_overflow */
 408          bfd_elf_generic_reloc, /* special_function */
 409          "R_ARM_GOTOFF",        /* name */
 410          true,                  /* partial_inplace */
 411          0xffffffff,            /* src_mask */
 412          0xffffffff,            /* dst_mask */
 413          false),                /* pcrel_offset */
 414
 415   HOWTO (R_ARM_GOTPC,           /* type */
 416          0,                     /* rightshift */
 417          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 418          32,                    /* bitsize */
 419          true,                  /* pc_relative */
 420          0,                     /* bitpos */
 421          complain_overflow_bitfield,/* complain_on_overflow */
 422          bfd_elf_generic_reloc, /* special_function */
 423          "R_ARM_GOTPC",         /* name */
 424          true,                  /* partial_inplace */
 425          0xffffffff,            /* src_mask */
 426          0xffffffff,            /* dst_mask */
 427          true),                 /* pcrel_offset */
 428
 429   HOWTO (R_ARM_GOT32,           /* type */
 430          0,                     /* rightshift */
 431          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 432          32,                    /* bitsize */
 433          false,                 /* pc_relative */
 434          0,                     /* bitpos */
 435          complain_overflow_bitfield,/* complain_on_overflow */
 436          bfd_elf_generic_reloc, /* special_function */
 437          "R_ARM_GOT32",         /* name */
 438          true,                  /* partial_inplace */
 439          0xffffffff,            /* src_mask */
 440          0xffffffff,            /* dst_mask */
 441          false),                /* pcrel_offset */
 442
 443   HOWTO (R_ARM_PLT32,           /* type */
 444          2,                     /* rightshift */
 445          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 446          26,                    /* bitsize */
 447          true,                  /* pc_relative */
 448          0,                     /* bitpos */
 449          complain_overflow_bitfield,/* complain_on_overflow */
 450          bfd_elf_generic_reloc, /* special_function */
 451          "R_ARM_PLT32",         /* name */
 452          true,                  /* partial_inplace */
 453          0x00ffffff,            /* src_mask */
 454          0x00ffffff,            /* dst_mask */
 455          true),                 /* pcrel_offset */
 456
 457   /* End of relocs used in ARM Linux */
 458
 459   HOWTO (R_ARM_RREL32,          /* type */
 460          0,                     /* rightshift */
 461          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 462          0,                     /* bitsize */
 463          false,                 /* pc_relative */
 464          0,                     /* bitpos */
 465          complain_overflow_dont,/* complain_on_overflow */
 466          bfd_elf_generic_reloc, /* special_function */
 467          "R_ARM_RREL32",        /* name */
 468          false,                 /* partial_inplace */
 469          0,                     /* src_mask */
 470          0,                     /* dst_mask */
 471          false),                /* pcrel_offset */
 472
 473   HOWTO (R_ARM_RABS32,          /* type */
 474          0,                     /* rightshift */
 475          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 476          0,                     /* bitsize */
 477          false,                 /* pc_relative */
 478          0,                     /* bitpos */
 479          complain_overflow_dont,/* complain_on_overflow */
 480          bfd_elf_generic_reloc, /* special_function */
 481          "R_ARM_RABS32",        /* name */
 482          false,                 /* partial_inplace */
 483          0,                     /* src_mask */
 484          0,                     /* dst_mask */
 485          false),                /* pcrel_offset */
 486
 487   HOWTO (R_ARM_RPC24,           /* type */
 488          0,                     /* rightshift */
 489          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 490          0,                     /* bitsize */
 491          false,                 /* pc_relative */
 492          0,                     /* bitpos */
 493          complain_overflow_dont,/* complain_on_overflow */
 494          bfd_elf_generic_reloc, /* special_function */
 495          "R_ARM_RPC24",         /* name */
 496          false,                 /* partial_inplace */
 497          0,                     /* src_mask */
 498          0,                     /* dst_mask */
 499          false),                /* pcrel_offset */
 500
 501   HOWTO (R_ARM_RBASE,           /* type */
 502          0,                     /* rightshift */
 503          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 504          0,                     /* bitsize */
 505          false,                 /* pc_relative */
 506          0,                     /* bitpos */
 507          complain_overflow_dont,/* complain_on_overflow */
 508          bfd_elf_generic_reloc, /* special_function */
 509          "R_ARM_RBASE",         /* name */
 510          false,                 /* partial_inplace */
 511          0,                     /* src_mask */
 512          0,                     /* dst_mask */
 513          false),                /* pcrel_offset */
 514
 515 };
 516
 517   /* GNU extension to record C++ vtable hierarchy */
 518 static reloc_howto_type elf32_arm_vtinherit_howto =
 519   HOWTO (R_ARM_GNU_VTINHERIT, /* type */
 520          0,                     /* rightshift */
 521          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 522          0,                     /* bitsize */
 523          false,                 /* pc_relative */
 524          0,                     /* bitpos */
 525          complain_overflow_dont, /* complain_on_overflow */
 526          NULL,                  /* special_function */
 527          "R_ARM_GNU_VTINHERIT", /* name */
 528          false,                 /* partial_inplace */
 529          0,                     /* src_mask */
 530          0,                     /* dst_mask */
 531          false);                /* pcrel_offset */
 532
 533   /* GNU extension to record C++ vtable member usage */
 534 static reloc_howto_type elf32_arm_vtentry_howto =
 535   HOWTO (R_ARM_GNU_VTENTRY,     /* type */
 536          0,                     /* rightshift */
 537          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 538          0,                     /* bitsize */
 539          false,                 /* pc_relative */
 540          0,                     /* bitpos */
 541          complain_overflow_dont, /* complain_on_overflow */
 542          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
 543          "R_ARM_GNU_VTENTRY",   /* name */
 544          false,                 /* partial_inplace */
 545          0,                     /* src_mask */
 546          0,                     /* dst_mask */
 547          false);                /* pcrel_offset */
 548
 549   /* 12 bit pc relative */
 550 static reloc_howto_type elf32_arm_thm_pc11_howto =
 551   HOWTO (R_ARM_THM_PC11,        /* type */
 552          1,                     /* rightshift */
 553          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 554          11,                    /* bitsize */
 555          true,                  /* pc_relative */
 556          0,                     /* bitpos */
 557          complain_overflow_signed,      /* complain_on_overflow */
 558          bfd_elf_generic_reloc, /* special_function */
 559          "R_ARM_THM_PC11",      /* name */
 560          false,                 /* partial_inplace */
 561          0x000007ff,            /* src_mask */
 562          0x000007ff,            /* dst_mask */
 563          true);                 /* pcrel_offset */
 564
 565   /* 12 bit pc relative */
 566 static reloc_howto_type elf32_arm_thm_pc9_howto =
 567   HOWTO (R_ARM_THM_PC9,         /* type */
 568          1,                     /* rightshift */
 569          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 570          8,                     /* bitsize */
 571          true,                  /* pc_relative */
 572          0,                     /* bitpos */
 573          complain_overflow_signed,      /* complain_on_overflow */
 574          bfd_elf_generic_reloc, /* special_function */
 575          "R_ARM_THM_PC9",       /* name */
 576          false,                 /* partial_inplace */
 577          0x000000ff,            /* src_mask */
 578          0x000000ff,            /* dst_mask */
 579          true);                 /* pcrel_offset */
 580
 581
 582 static void
 583 elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc)
 584      bfd * abfd ATTRIBUTE_UNUSED;
 585      arelent * bfd_reloc;
 586      Elf32_Internal_Rel * elf_reloc;
 587 {
 588   unsigned int r_type;
 589
 590   r_type = ELF32_R_TYPE (elf_reloc->r_info);
 591
 592   switch (r_type)
 593     {
 594     case R_ARM_GNU_VTINHERIT:
 595       bfd_reloc->howto = & elf32_arm_vtinherit_howto;
 596       break;
 597
 598     case R_ARM_GNU_VTENTRY:
 599       bfd_reloc->howto = & elf32_arm_vtentry_howto;
 600       break;
 601
 602     case R_ARM_THM_PC11:
 603       bfd_reloc->howto = & elf32_arm_thm_pc11_howto;
 604       break;
 605
 606     case R_ARM_THM_PC9:
 607       bfd_reloc->howto = & elf32_arm_thm_pc9_howto;
 608       break;
 609
 610     default:
 611       if (r_type >= NUM_ELEM (elf32_arm_howto_table))
 612         bfd_reloc->howto = NULL;
 613       else
 614         bfd_reloc->howto = & elf32_arm_howto_table[r_type];
 615       break;
 616     }
 617 }
 618
 619 struct elf32_arm_reloc_map
 620   {
 621     bfd_reloc_code_real_type  bfd_reloc_val;
 622     unsigned char             elf_reloc_val;
 623   };
 624
 625 static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
 626 {
 627   {BFD_RELOC_NONE,                 R_ARM_NONE},
 628   {BFD_RELOC_ARM_PCREL_BRANCH,     R_ARM_PC24},
 629   {BFD_RELOC_ARM_PCREL_BLX,        R_ARM_XPC25},
 630   {BFD_RELOC_THUMB_PCREL_BLX,      R_ARM_THM_XPC22},
 631   {BFD_RELOC_32,                   R_ARM_ABS32},
 632   {BFD_RELOC_32_PCREL,             R_ARM_REL32},
 633   {BFD_RELOC_8,                    R_ARM_ABS8},
 634   {BFD_RELOC_16,                   R_ARM_ABS16},
 635   {BFD_RELOC_ARM_OFFSET_IMM,       R_ARM_ABS12},
 636   {BFD_RELOC_ARM_THUMB_OFFSET,     R_ARM_THM_ABS5},
 637   {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22},
 638   {BFD_RELOC_ARM_COPY,             R_ARM_COPY},
 639   {BFD_RELOC_ARM_GLOB_DAT,         R_ARM_GLOB_DAT},
 640   {BFD_RELOC_ARM_JUMP_SLOT,        R_ARM_JUMP_SLOT},
 641   {BFD_RELOC_ARM_RELATIVE,         R_ARM_RELATIVE},
 642   {BFD_RELOC_ARM_GOTOFF,           R_ARM_GOTOFF},
 643   {BFD_RELOC_ARM_GOTPC,            R_ARM_GOTPC},
 644   {BFD_RELOC_ARM_GOT32,            R_ARM_GOT32},
 645   {BFD_RELOC_ARM_PLT32,            R_ARM_PLT32}
 646 };
 647
 648 static reloc_howto_type *
 649 elf32_arm_reloc_type_lookup (abfd, code)
 650      bfd *abfd ATTRIBUTE_UNUSED;
 651      bfd_reloc_code_real_type code;
 652 {
 653   unsigned int i;
 654
 655   switch (code)
 656     {
 657     case BFD_RELOC_VTABLE_INHERIT:
 658       return & elf32_arm_vtinherit_howto;
 659
 660     case BFD_RELOC_VTABLE_ENTRY:
 661       return & elf32_arm_vtentry_howto;
 662
 663     case BFD_RELOC_THUMB_PCREL_BRANCH12:
 664       return & elf32_arm_thm_pc11_howto;
 665
 666     case BFD_RELOC_THUMB_PCREL_BRANCH9:
 667       return & elf32_arm_thm_pc9_howto;
 668
 669     default:
 670       for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
 671         if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
 672           return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val];
 673
 674       return NULL;
 675    }
 676 }
 677
 678 #include "elf32-arm.h"