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 /* The target-system-dependant byte order is dynamic */
  24
  25 /* TARGET_BYTE_ORDER_SELECTABLE_P determines if the target endianness
  26    is selectable at runtime.  The user can use the `set endian'
  27    command to change it.  TARGET_BYTE_ORDER_AUTO is nonzero when
  28    target_byte_order should be auto-detected (from the program image
  29    say). */
  30
  31 #ifndef TARGET_BYTE_ORDER_SELECTABLE_P
  32 /* compat - Catch old targets that define TARGET_BYTE_ORDER_SLECTABLE
  33    when they should have defined TARGET_BYTE_ORDER_SELECTABLE_P 1 */
  34 #ifdef TARGET_BYTE_ORDER_SELECTABLE
  35 #define TARGET_BYTE_ORDER_SELECTABLE_P 1
  36 #else
  37 #define TARGET_BYTE_ORDER_SELECTABLE_P 0
  38 #endif
  39 #endif
  40
  41 extern int target_byte_order;
  42 #ifdef TARGET_BYTE_ORDER_SELECTABLE
  43 /* compat - Catch old targets that define TARGET_BYTE_ORDER_SELECTABLE
  44    and expect defs.h to re-define TARGET_BYTE_ORDER. */
  45 #undef TARGET_BYTE_ORDER
  46 #endif
  47 #ifndef TARGET_BYTE_ORDER
  48 #define TARGET_BYTE_ORDER (target_byte_order + 0)
  49 #endif
  50
  51 extern int target_byte_order_auto;
  52 #ifndef TARGET_BYTE_ORDER_AUTO
  53 #define TARGET_BYTE_ORDER_AUTO (target_byte_order_auto + 0)
  54 #endif
  55
  56
  57
  58 /* The target-system-dependant BFD architecture is dynamic */
  59
  60 extern int target_architecture_auto;
  61 #ifndef TARGET_ARCHITECTURE_AUTO
  62 #define TARGET_ARCHITECTURE_AUTO (target_architecture_auto + 0)
  63 #endif
  64
  65 extern const struct bfd_arch_info *target_architecture;
  66 #ifndef TARGET_ARCHITECTURE
  67 #define TARGET_ARCHITECTURE (target_architecture + 0)
  68 #endif
  69
  70 /* Notify the target dependant backend of a change to the selected
  71    architecture. A zero return status indicates that the target did
  72    not like the change. */
  73
  74 extern int (*target_architecture_hook) PARAMS ((const struct bfd_arch_info *));
  75
  76
  77
  78 /* The target-system-dependant disassembler is semi-dynamic */
  79
  80 #include "dis-asm.h"            /* Get defs for disassemble_info */
  81
  82 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
  83                                         int len, disassemble_info *info));
  84
  85 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
  86                                           disassemble_info *info));
  87
  88 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
  89                                            disassemble_info *info));
  90
  91 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
  92 extern disassemble_info tm_print_insn_info;
  93 #ifndef TARGET_PRINT_INSN
  94 #define TARGET_PRINT_INSN(vma, info) (*tm_print_insn) (vma, info)
  95 #endif
  96 #ifndef TARGET_PRINT_INSN_INFO
  97 #define TARGET_PRINT_INSN_INFO (&tm_print_insn_info)
  98 #endif
  99
 100
 101
 102 /* Explicit test for D10V architecture.
 103    USE of these macro's is *STRONGLY* discouraged. */
 104
 105 #define GDB_TARGET_IS_D10V (TARGET_ARCHITECTURE->arch == bfd_arch_d10v)
 106 #ifndef D10V_MAKE_DADDR
 107 #define D10V_MAKE_DADDR(X) (abort (), 0)
 108 #endif
 109 #ifndef D10V_MAKE_IADDR
 110 #define D10V_MAKE_IADDR(X) (abort (), 0)
 111 #endif
 112
 113
 114
 115
 116
 117 /* Set the dynamic target-system-dependant parameters (architecture,
 118    byte-order, ...) using information found in the BFD */
 119
 120 extern void set_gdbarch_from_file PARAMS ((bfd *));
 121
 122
 123 /* Explicitly set the dynamic target-system-dependant parameters based
 124    on bfd_architecture and machine. */
 125
 126 extern void set_architecture_from_arch_mach PARAMS ((enum bfd_architecture, unsigned long));
 127
 128
 129 /* gdbarch trace variable */
 130 extern int gdbarch_debug;
 131
 132 #endif