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, USA.  */
  20
  21 /* This file holds definitions specific to the Xtensa ELF ABI.  */
  22
  23 #ifndef _ELF_XTENSA_H
  24 #define _ELF_XTENSA_H
  25
  26 #include "elf/reloc-macros.h"
  27
  28 /* Relocations.  */
  29 START_RELOC_NUMBERS (elf_xtensa_reloc_type)
  30      RELOC_NUMBER (R_XTENSA_NONE, 0)
  31      RELOC_NUMBER (R_XTENSA_32, 1)
  32      RELOC_NUMBER (R_XTENSA_RTLD, 2)
  33      RELOC_NUMBER (R_XTENSA_GLOB_DAT, 3)
  34      RELOC_NUMBER (R_XTENSA_JMP_SLOT, 4)
  35      RELOC_NUMBER (R_XTENSA_RELATIVE, 5)
  36      RELOC_NUMBER (R_XTENSA_PLT, 6)
  37      RELOC_NUMBER (R_XTENSA_OP0, 8)
  38      RELOC_NUMBER (R_XTENSA_OP1, 9)
  39      RELOC_NUMBER (R_XTENSA_OP2, 10)
  40      RELOC_NUMBER (R_XTENSA_ASM_EXPAND, 11)
  41      RELOC_NUMBER (R_XTENSA_ASM_SIMPLIFY, 12)
  42      RELOC_NUMBER (R_XTENSA_GNU_VTINHERIT, 15)
  43      RELOC_NUMBER (R_XTENSA_GNU_VTENTRY, 16)
  44 END_RELOC_NUMBERS (R_XTENSA_max)
  45
  46 /* Processor-specific flags for the ELF header e_flags field.  */
  47
  48 /* Four-bit Xtensa machine type field.  */
  49 #define EF_XTENSA_MACH                  0x0000000f
  50
  51 /* Various CPU types.  */
  52 #define E_XTENSA_MACH                   0x00000000
  53
  54 /* Leave bits 0xf0 alone in case we ever have more than 16 cpu types.
  55    Highly unlikely, but what the heck.  */
  56
  57 #define EF_XTENSA_XT_INSN               0x00000100
  58 #define EF_XTENSA_XT_LIT                0x00000200
  59
  60
  61 /* Processor-specific dynamic array tags.  */
  62
  63 /* Offset of the table that records the GOT location(s).  */
  64 #define DT_XTENSA_GOT_LOC_OFF           0x70000000
  65
  66 /* Number of entries in the GOT location table.  */
  67 #define DT_XTENSA_GOT_LOC_SZ            0x70000001
  68
  69
  70 /* Definitions for instruction and literal property tables.  The
  71    instruction tables for ".gnu.linkonce.t.*" sections are placed in
  72    the following sections:
  73
  74    instruction tables:  .gnu.linkonce.x.*
  75    literal tables:      .gnu.linkonce.p.*
  76 */
  77
  78 #define XTENSA_INSN_SEC_NAME ".xt.insn"
  79 #define XTENSA_LIT_SEC_NAME  ".xt.lit"
  80
  81 typedef struct property_table_entry_t
  82 {
  83   bfd_vma address;
  84   bfd_vma size;
  85 } property_table_entry;
  86
  87 #endif /* _ELF_XTENSA_H */