gdb/gdbarch.h

   1 /* Architecture commands for GDB, the GNU debugger.
   2    Copyright 1998, Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   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 #ifndef GDBARCH_H
  21 #define GDBARCH_H
  22
  23
  24 /* The target-system-dependant byte order is dynamic */
  25
  26 /* TARGET_BYTE_ORDER_SELECTABLE_P determines if the target endianness
  27    is selectable at runtime.  The user can use the `set endian'
  28    command to change it.  TARGET_BYTE_ORDER_AUTO is nonzero when
  29    target_byte_order should be auto-detected (from the program image
  30    say). */
  31
  32 #ifndef TARGET_BYTE_ORDER_SELECTABLE_P
  33 /* compat - Catch old targets that define TARGET_BYTE_ORDER_SLECTABLE
  34    when they should have defined TARGET_BYTE_ORDER_SELECTABLE_P 1 */
  35 #ifdef TARGET_BYTE_ORDER_SELECTABLE
  36 #define TARGET_BYTE_ORDER_SELECTABLE_P 1
  37 #else
  38 #define TARGET_BYTE_ORDER_SELECTABLE_P 0
  39 #endif
  40 #endif
  41
  42 extern int target_byte_order;
  43 #ifdef TARGET_BYTE_ORDER_SELECTABLE
  44 /* compat - Catch old targets that define TARGET_BYTE_ORDER_SELECTABLE
  45    and expect defs.h to re-define TARGET_BYTE_ORDER. */
  46 #undef TARGET_BYTE_ORDER
  47 #endif
  48 #ifndef TARGET_BYTE_ORDER
  49 #define TARGET_BYTE_ORDER (target_byte_order + 0)
  50 #endif
  51
  52 extern int target_byte_order_auto;
  53 #ifndef TARGET_BYTE_ORDER_AUTO
  54 #define TARGET_BYTE_ORDER_AUTO (target_byte_order_auto + 0)
  55 #endif
  56
  57
  58
  59 /* The target-system-dependant BFD architecture is dynamic */
  60
  61 extern int target_architecture_auto;
  62 #ifndef TARGET_ARCHITECTURE_AUTO
  63 #define TARGET_ARCHITECTURE_AUTO (target_architecture_auto + 0)
  64 #endif
  65
  66 extern const struct bfd_arch_info *target_architecture;
  67 #ifndef TARGET_ARCHITECTURE
  68 #define TARGET_ARCHITECTURE (target_architecture + 0)
  69 #endif
  70
  71 /* Notify the target dependant backend of a change to the selected
  72    architecture. A zero return status indicates that the target did
  73    not like the change. */
  74
  75 extern int (*target_architecture_hook) PARAMS ((const struct bfd_arch_info *));
  76
  77
  78
  79 /* The target-system-dependant disassembler is semi-dynamic */
  80
  81 #include "dis-asm.h"            /* Get defs for disassemble_info */
  82
  83 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
  84                                         int len, disassemble_info *info));
  85
  86 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
  87                                           disassemble_info *info));
  88
  89 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
  90                                            disassemble_info *info));
  91
  92 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
  93 extern disassemble_info tm_print_insn_info;
  94 #ifndef TARGET_PRINT_INSN
  95 #define TARGET_PRINT_INSN(vma, info) (*tm_print_insn) (vma, info)
  96 #endif
  97 #ifndef TARGET_PRINT_INSN_INFO
  98 #define TARGET_PRINT_INSN_INFO (&tm_print_insn_info)
  99 #endif
 100
 101
 102
 103 /* Set the dynamic target-system-dependant parameters (architecture,
 104    byte-order, ...) using information found in the BFD */
 105
 106 extern void set_gdbarch_from_file PARAMS ((bfd *));
 107
 108
 109 /* Explicitly set the dynamic target-system-dependant parameters based
 110    on bfd_architecture and machine. */
 111
 112 extern void set_architecture_from_arch_mach PARAMS ((enum bfd_architecture, unsigned long));
 113
 114
 115 /* gdbarch trace variable */
 116 extern int gdbarch_debug;
 117
 118 #endif