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 #define USE_REL
  27
  28 #define TARGET_LITTLE_SYM               bfd_elf32_littlearm_vec
  29 #define TARGET_LITTLE_NAME              "elf32-littlearm"
  30 #define TARGET_BIG_SYM                  bfd_elf32_bigarm_vec
  31 #define TARGET_BIG_NAME                 "elf32-bigarm"
  32 #define elf_info_to_howto               0
  33 #define elf_info_to_howto_rel           elf32_arm_info_to_howto_rel
  34
  35
  36 static reloc_howto_type elf32_arm_howto_table[] =
  37 {
  38   /* No relocation */
  39   HOWTO (R_ARM_NONE,            /* type */
  40          0,                     /* rightshift */
  41          0,                     /* size (0 = byte, 1 = short, 2 = long) */
  42          0,                     /* bitsize */
  43          false,                 /* pc_relative */
  44          0,                     /* bitpos */
  45          complain_overflow_dont,        /* complain_on_overflow */
  46          bfd_elf_generic_reloc, /* special_function */
  47          "R_ARM_NONE",          /* name */
  48          false,                 /* partial_inplace */
  49          0,                     /* src_mask */
  50          0,                     /* dst_mask */
  51          false),                /* pcrel_offset */
  52
  53   HOWTO (R_ARM_PC24,            /* type */
  54          2,                     /* rightshift */
  55          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  56          24,                    /* bitsize */
  57          true,                  /* pc_relative */
  58          0,                     /* bitpos */
  59          complain_overflow_signed,      /* complain_on_overflow */
  60          bfd_elf_generic_reloc, /* special_function */
  61          "R_ARM_PC24",          /* name */
  62          false,                 /* partial_inplace */
  63          0x00ffffff,            /* src_mask */
  64          0x00ffffff,            /* dst_mask */
  65          true),                 /* pcrel_offset */
  66
  67   /* 32 bit absolute */
  68   HOWTO (R_ARM_ABS32,           /* type */
  69          0,                     /* rightshift */
  70          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  71          32,                    /* bitsize */
  72          false,                 /* pc_relative */
  73          0,                     /* bitpos */
  74          complain_overflow_bitfield,    /* complain_on_overflow */
  75          bfd_elf_generic_reloc, /* special_function */
  76          "R_ARM_ABS32",         /* name */
  77          false,                 /* partial_inplace */
  78          0xffffffff,            /* src_mask */
  79          0xffffffff,            /* dst_mask */
  80          false),                /* pcrel_offset */
  81
  82   /* standard 32bit pc-relative reloc */
  83   HOWTO (R_ARM_REL32,           /* type */
  84          0,                     /* rightshift */
  85          2,                     /* size (0 = byte, 1 = short, 2 = long) */
  86          32,                    /* bitsize */
  87          true,                  /* pc_relative */
  88          0,                     /* bitpos */
  89          complain_overflow_bitfield,    /* complain_on_overflow */
  90          bfd_elf_generic_reloc, /* special_function */
  91          "R_ARM_REL32",         /* name */
  92          false,                 /* partial_inplace */
  93          0xffffffff,            /* src_mask */
  94          0xffffffff,            /* dst_mask */
  95          true),                 /* pcrel_offset */
  96
  97   /* 8 bit absolute */
  98   HOWTO (R_ARM_PC13,            /* type */
  99          0,                     /* rightshift */
 100          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 101          8,                     /* bitsize */
 102          false,                 /* pc_relative */
 103          0,                     /* bitpos */
 104          complain_overflow_bitfield,    /* complain_on_overflow */
 105          bfd_elf_generic_reloc, /* special_function */
 106          "R_ARM_PC13",          /* name */
 107          false,                 /* partial_inplace */
 108          0x000000ff,            /* src_mask */
 109          0x000000ff,            /* dst_mask */
 110          false),                /* pcrel_offset */
 111
 112    /* 16 bit absolute */
 113   HOWTO (R_ARM_ABS16,           /* type */
 114          0,                     /* rightshift */
 115          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 116          16,                    /* bitsize */
 117          false,                 /* pc_relative */
 118          0,                     /* bitpos */
 119          complain_overflow_bitfield,    /* complain_on_overflow */
 120          bfd_elf_generic_reloc, /* special_function */
 121          "R_ARM_ABS16",         /* name */
 122          false,                 /* partial_inplace */
 123          0,                     /* src_mask */
 124          0,                     /* dst_mask */
 125          false),                /* pcrel_offset */
 126
 127   /* 12 bit absolute */
 128   HOWTO (R_ARM_ABS12,           /* type */
 129          0,                     /* rightshift */
 130          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 131          12,                    /* bitsize */
 132          false,                 /* pc_relative */
 133          0,                     /* bitpos */
 134          complain_overflow_bitfield,    /* complain_on_overflow */
 135          bfd_elf_generic_reloc, /* special_function */
 136          "R_ARM_ABS12",         /* name */
 137          false,                 /* partial_inplace */
 138          0x000008ff,            /* src_mask */
 139          0x000008ff,            /* dst_mask */
 140          false),                /* pcrel_offset */
 141
 142   HOWTO (R_ARM_THM_ABS5,        /* type */
 143          0,                     /* rightshift */
 144          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 145          5,                     /* 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_THM_ABS5",      /* name */
 151          false,                 /* partial_inplace */
 152          0x000007e0,            /* src_mask */
 153          0x000007e0,            /* dst_mask */
 154          false),                /* pcrel_offset */
 155
 156   /* 8 bit absolute */
 157   HOWTO (R_ARM_ABS8,            /* type */
 158          0,                     /* rightshift */
 159          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 160          8,                     /* bitsize */
 161          false,                 /* pc_relative */
 162          0,                     /* bitpos */
 163          complain_overflow_bitfield,    /* complain_on_overflow */
 164          bfd_elf_generic_reloc, /* special_function */
 165          "R_ARM_ABS8",          /* name */
 166          false,                 /* partial_inplace */
 167          0x000000ff,            /* src_mask */
 168          0x000000ff,            /* dst_mask */
 169          false),                /* pcrel_offset */
 170
 171   HOWTO (R_ARM_SBREL32,         /* type */
 172          0,                     /* rightshift */
 173          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 174          0,                     /* bitsize */
 175          false,                 /* pc_relative */
 176          0,                     /* bitpos */
 177          complain_overflow_dont,        /* complain_on_overflow */
 178          bfd_elf_generic_reloc, /* special_function */
 179          "R_ARM_SBREL32",       /* name */
 180          false,                 /* partial_inplace */
 181          0,                     /* src_mask */
 182          0,                     /* dst_mask */
 183          false),                /* pcrel_offset */
 184
 185   HOWTO (R_ARM_THM_PC22,        /* type */
 186          1,                     /* rightshift */
 187          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 188          22,                    /* bitsize */
 189          true,                  /* pc_relative */
 190          0,                     /* bitpos */
 191          complain_overflow_signed,      /* complain_on_overflow */
 192          bfd_elf_generic_reloc, /* special_function */
 193          "R_ARM_THM_PC22",      /* name */
 194          false,                 /* partial_inplace */
 195          0x07ff07ff,            /* src_mask */
 196          0x07ff07ff,            /* dst_mask */
 197          true),                 /* pcrel_offset */
 198
 199   HOWTO (R_ARM_THM_PC8,         /* type */
 200          1,                     /* rightshift */
 201          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 202          8,                     /* 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_PC8",       /* name */
 208          false,                 /* partial_inplace */
 209          0x000000ff,            /* src_mask */
 210          0x000000ff,            /* dst_mask */
 211          true),                 /* pcrel_offset */
 212
 213   HOWTO (R_ARM_AMP_VCALL9,      /* 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_AMP_VCALL9",    /* name */
 222          false,                 /* partial_inplace */
 223          0x000000ff,            /* src_mask */
 224          0x000000ff,            /* dst_mask */
 225          true),                 /* pcrel_offset */
 226
 227   HOWTO (R_ARM_SWI24,   /* type */
 228          0,                     /* rightshift */
 229          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 230          0,                     /* bitsize */
 231          false,                 /* pc_relative */
 232          0,                     /* bitpos */
 233          complain_overflow_signed,      /* complain_on_overflow */
 234          bfd_elf_generic_reloc, /* special_function */
 235          "R_ARM_SWI24", /* name */
 236          false,                 /* partial_inplace */
 237          0x00000000,            /* src_mask */
 238          0x00000000,            /* dst_mask */
 239          false),                        /* pcrel_offset */
 240
 241   HOWTO (R_ARM_THM_SWI8,        /* 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_SWI8",  /* name */
 250          false,                 /* partial_inplace */
 251          0x00000000,            /* src_mask */
 252          0x00000000,            /* dst_mask */
 253          false),                        /* pcrel_offset */
 254
 255   HOWTO (R_ARM_RREL32,          /* 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_dont,        /* complain_on_overflow */
 262          bfd_elf_generic_reloc, /* special_function */
 263          "R_ARM_RREL32",        /* name */
 264          false,                 /* partial_inplace */
 265          0,                     /* src_mask */
 266          0,                     /* dst_mask */
 267          false),                /* pcrel_offset */
 268
 269   HOWTO (R_ARM_RABS32,          /* type */
 270          0,                     /* rightshift */
 271          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 272          0,                     /* bitsize */
 273          false,                 /* pc_relative */
 274          0,                     /* bitpos */
 275          complain_overflow_dont,        /* complain_on_overflow */
 276          bfd_elf_generic_reloc, /* special_function */
 277          "R_ARM_RABS32",        /* name */
 278          false,                 /* partial_inplace */
 279          0,                     /* src_mask */
 280          0,                     /* dst_mask */
 281          false),                /* pcrel_offset */
 282
 283   HOWTO (R_ARM_RPC24,           /* type */
 284          0,                     /* rightshift */
 285          0,                     /* size (0 = byte, 1 = short, 2 = long) */
 286          0,                     /* bitsize */
 287          false,                 /* pc_relative */
 288          0,                     /* bitpos */
 289          complain_overflow_dont,        /* complain_on_overflow */
 290          bfd_elf_generic_reloc, /* special_function */
 291          "R_ARM_RPC24",         /* name */
 292          false,                 /* partial_inplace */
 293          0,                     /* src_mask */
 294          0,                     /* dst_mask */
 295          false),                /* pcrel_offset */
 296
 297   HOWTO (R_ARM_RBASE,           /* 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_RBASE",         /* name */
 306          false,                 /* partial_inplace */
 307          0,                     /* src_mask */
 308          0,                     /* dst_mask */
 309          false),                /* pcrel_offset */
 310
 311 };
 312
 313   /* GNU extension to record C++ vtable hierarchy */
 314 static reloc_howto_type elf32_arm_vtinherit_howto =
 315   HOWTO (R_ARM_GNU_VTINHERIT, /* type */
 316          0,                     /* rightshift */
 317          2,                     /* 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          NULL,                  /* special_function */
 323          "R_ARM_GNU_VTINHERIT", /* name */
 324          false,                 /* partial_inplace */
 325          0,                     /* src_mask */
 326          0,                     /* dst_mask */
 327          false);                /* pcrel_offset */
 328
 329   /* GNU extension to record C++ vtable member usage */
 330 static reloc_howto_type elf32_arm_vtentry_howto =
 331   HOWTO (R_ARM_GNU_VTENTRY,     /* type */
 332          0,                     /* rightshift */
 333          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 334          0,                     /* bitsize */
 335          false,                 /* pc_relative */
 336          0,                     /* bitpos */
 337          complain_overflow_dont, /* complain_on_overflow */
 338          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
 339          "R_ARM_GNU_VTENTRY",   /* name */
 340          false,                 /* partial_inplace */
 341          0,                     /* src_mask */
 342          0,                     /* dst_mask */
 343          false);                /* pcrel_offset */
 344
 345   /* 12 bit pc relative */
 346 static reloc_howto_type elf32_arm_thm_pc11_howto =
 347   HOWTO (R_ARM_THM_PC11,        /* type */
 348          1,                     /* rightshift */
 349          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 350          11,                    /* bitsize */
 351          true,                  /* pc_relative */
 352          0,                     /* bitpos */
 353          complain_overflow_signed,      /* complain_on_overflow */
 354          bfd_elf_generic_reloc, /* special_function */
 355          "R_ARM_THM_PC11",      /* name */
 356          false,                 /* partial_inplace */
 357          0x000007ff,            /* src_mask */
 358          0x000007ff,            /* dst_mask */
 359          true);                 /* pcrel_offset */
 360
 361   /* 12 bit pc relative */
 362 static reloc_howto_type elf32_arm_thm_pc9_howto =
 363   HOWTO (R_ARM_THM_PC9,         /* type */
 364          1,                     /* rightshift */
 365          1,                     /* size (0 = byte, 1 = short, 2 = long) */
 366          8,                     /* bitsize */
 367          true,                  /* pc_relative */
 368          0,                     /* bitpos */
 369          complain_overflow_signed,      /* complain_on_overflow */
 370          bfd_elf_generic_reloc, /* special_function */
 371          "R_ARM_THM_PC9",       /* name */
 372          false,                 /* partial_inplace */
 373          0x000000ff,            /* src_mask */
 374          0x000000ff,            /* dst_mask */
 375          true);                 /* pcrel_offset */
 376
 377
 378 static void
 379 elf32_arm_info_to_howto_rel (abfd, bfd_reloc, elf_reloc)
 380      bfd *abfd;
 381      arelent *bfd_reloc;
 382      Elf32_Internal_Rel *elf_reloc;
 383 {
 384      unsigned int r_type;
 385
 386      r_type = ELF32_R_TYPE (elf_reloc->r_info);
 387      if (r_type == R_ARM_GNU_VTINHERIT)
 388        bfd_reloc->howto = &elf32_arm_vtinherit_howto;
 389      else if (r_type == R_ARM_GNU_VTENTRY)
 390        bfd_reloc->howto = &elf32_arm_vtentry_howto;
 391      else if (r_type == R_ARM_THM_PC11)
 392       bfd_reloc->howto = &elf32_arm_thm_pc11_howto;
 393     else if (r_type == R_ARM_THM_PC9)
 394       bfd_reloc->howto = &elf32_arm_thm_pc9_howto;
 395      else
 396        bfd_reloc->howto = &elf32_arm_howto_table[r_type];
 397 }
 398 #include "elf32-arm.h"