include/elf/xtensa.h

   1 /* Xtensa ELF support for BFD.
   2    Copyright 2003 Free Software Foundation, Inc.
   3    Contributed by Bob Wilson (bwilson@tensilica.com) at Tensilica.
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20    USA.  */
  21
  22 /* This file holds definitions specific to the Xtensa ELF ABI.  */
  23
  24 #ifndef _ELF_XTENSA_H
  25 #define _ELF_XTENSA_H
  26
  27 #include "elf/reloc-macros.h"
  28
  29 /* Relocations.  */
  30 START_RELOC_NUMBERS (elf_xtensa_reloc_type)
  31      RELOC_NUMBER (R_XTENSA_NONE, 0)
  32      RELOC_NUMBER (R_XTENSA_32, 1)
  33      RELOC_NUMBER (R_XTENSA_RTLD, 2)
  34      RELOC_NUMBER (R_XTENSA_GLOB_DAT, 3)
  35      RELOC_NUMBER (R_XTENSA_JMP_SLOT, 4)
  36      RELOC_NUMBER (R_XTENSA_RELATIVE, 5)
  37      RELOC_NUMBER (R_XTENSA_PLT, 6)
  38      RELOC_NUMBER (R_XTENSA_OP0, 8)
  39      RELOC_NUMBER (R_XTENSA_OP1, 9)
  40      RELOC_NUMBER (R_XTENSA_OP2, 10)
  41      RELOC_NUMBER (R_XTENSA_ASM_EXPAND, 11)
  42      RELOC_NUMBER (R_XTENSA_ASM_SIMPLIFY, 12)
  43      RELOC_NUMBER (R_XTENSA_GNU_VTINHERIT, 15)
  44      RELOC_NUMBER (R_XTENSA_GNU_VTENTRY, 16)
  45 END_RELOC_NUMBERS (R_XTENSA_max)
  46
  47 /* Processor-specific flags for the ELF header e_flags field.  */
  48
  49 /* Four-bit Xtensa machine type field.  */
  50 #define EF_XTENSA_MACH                  0x0000000f
  51
  52 /* Various CPU types.  */
  53 #define E_XTENSA_MACH                   0x00000000
  54
  55 /* Leave bits 0xf0 alone in case we ever have more than 16 cpu types.
  56    Highly unlikely, but what the heck.  */
  57
  58 #define EF_XTENSA_XT_INSN               0x00000100
  59 #define EF_XTENSA_XT_LIT                0x00000200
  60
  61
  62 /* Processor-specific dynamic array tags.  */
  63
  64 /* Offset of the table that records the GOT location(s).  */
  65 #define DT_XTENSA_GOT_LOC_OFF           0x70000000
  66
  67 /* Number of entries in the GOT location table.  */
  68 #define DT_XTENSA_GOT_LOC_SZ            0x70000001
  69
  70
  71 /* Definitions for instruction and literal property tables.  The
  72    tables for ".gnu.linkonce.*" sections are placed in the following
  73    sections:
  74
  75    instruction tables:  .gnu.linkonce.x.*
  76    literal tables:      .gnu.linkonce.p.*
  77 */
  78
  79 #define XTENSA_INSN_SEC_NAME ".xt.insn"
  80 #define XTENSA_LIT_SEC_NAME  ".xt.lit"
  81
  82 typedef struct property_table_entry_t
  83 {
  84   bfd_vma address;
  85   bfd_vma size;
  86 } property_table_entry;
  87
  88 #endif /* _ELF_XTENSA_H */