gdb/gdbarch.h

   1 /* Architecture commands for GDB, the GNU debugger.
   2    Copyright 1998-1999, 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 #ifdef __STDC__
  24 struct frame_info;
  25 struct value;
  26 enum lval_type;
  27 #endif
  28
  29 /* The target-system-dependant byte order is dynamic */
  30
  31 /* TARGET_BYTE_ORDER_SELECTABLE_P determines if the target endianness
  32    is selectable at runtime.  The user can use the ``set endian''
  33    command to change it.  TARGET_BYTE_ORDER_AUTO is nonzero when
  34    target_byte_order should be auto-detected (from the program image
  35    say). */
  36
  37 #ifndef TARGET_BYTE_ORDER_SELECTABLE_P
  38 /* compat - Catch old targets that define TARGET_BYTE_ORDER_SLECTABLE
  39    when they should have defined TARGET_BYTE_ORDER_SELECTABLE_P 1 */
  40 #ifdef TARGET_BYTE_ORDER_SELECTABLE
  41 #define TARGET_BYTE_ORDER_SELECTABLE_P 1
  42 #else
  43 #define TARGET_BYTE_ORDER_SELECTABLE_P 0
  44 #endif
  45 #endif
  46
  47 extern int target_byte_order;
  48 #ifdef TARGET_BYTE_ORDER_SELECTABLE
  49 /* compat - Catch old targets that define TARGET_BYTE_ORDER_SELECTABLE
  50    and expect defs.h to re-define TARGET_BYTE_ORDER. */
  51 #undef TARGET_BYTE_ORDER
  52 #endif
  53 #ifndef TARGET_BYTE_ORDER
  54 #define TARGET_BYTE_ORDER (target_byte_order + 0)
  55 #endif
  56
  57 extern int target_byte_order_auto;
  58 #ifndef TARGET_BYTE_ORDER_AUTO
  59 #define TARGET_BYTE_ORDER_AUTO (target_byte_order_auto + 0)
  60 #endif
  61
  62
  63
  64 /* The target-system-dependant BFD architecture is dynamic */
  65
  66 extern int target_architecture_auto;
  67 #ifndef TARGET_ARCHITECTURE_AUTO
  68 #define TARGET_ARCHITECTURE_AUTO (target_architecture_auto + 0)
  69 #endif
  70
  71 extern const struct bfd_arch_info *target_architecture;
  72 #ifndef TARGET_ARCHITECTURE
  73 #define TARGET_ARCHITECTURE (target_architecture + 0)
  74 #endif
  75
  76 /* Notify the target dependant backend of a change to the selected
  77    architecture. A zero return status indicates that the target did
  78    not like the change. */
  79
  80 extern int (*target_architecture_hook) PARAMS ((const struct bfd_arch_info *));
  81
  82
  83
  84 /* The target-system-dependant disassembler is semi-dynamic */
  85
  86 #include "dis-asm.h"            /* Get defs for disassemble_info */
  87
  88 extern int dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr,
  89                                         int len, disassemble_info *info));
  90
  91 extern void dis_asm_memory_error PARAMS ((int status, bfd_vma memaddr,
  92                                           disassemble_info *info));
  93
  94 extern void dis_asm_print_address PARAMS ((bfd_vma addr,
  95                                            disassemble_info *info));
  96
  97 extern int (*tm_print_insn) PARAMS ((bfd_vma, disassemble_info*));
  98 extern disassemble_info tm_print_insn_info;
  99 #ifndef TARGET_PRINT_INSN
 100 #define TARGET_PRINT_INSN(vma, info) (*tm_print_insn) (vma, info)
 101 #endif
 102 #ifndef TARGET_PRINT_INSN_INFO
 103 #define TARGET_PRINT_INSN_INFO (&tm_print_insn_info)
 104 #endif
 105
 106
 107
 108 /* Explicit test for D10V architecture.
 109    USE of these macro's is *STRONGLY* discouraged. */
 110
 111 #define GDB_TARGET_IS_D10V (TARGET_ARCHITECTURE->arch == bfd_arch_d10v)
 112 #ifndef D10V_MAKE_DADDR
 113 #define D10V_MAKE_DADDR(X) (abort (), 0)
 114 #endif
 115 #ifndef D10V_MAKE_IADDR
 116 #define D10V_MAKE_IADDR(X) (abort (), 0)
 117 #endif
 118
 119
 120 /* Fallback definition of FRAMELESS_FUNCTION_INVOCATION */
 121 #ifndef FRAMELESS_FUNCTION_INVOCATION
 122 #define FRAMELESS_FUNCTION_INVOCATION(FI) (0)
 123 #endif
 124
 125
 126 /* Fallback definition of REGISTER_CONVERTIBLE etc */
 127 #ifndef REGISTER_CONVERTIBLE
 128 #define REGISTER_CONVERTIBLE(x) (0)
 129 #endif
 130 #ifndef REGISTER_CONVERT_TO_VIRTUAL
 131 #define REGISTER_CONVERT_TO_VIRTUAL(x, y, z, a)
 132 #endif
 133 #ifndef REGISTER_CONVERT_TO_RAW
 134 #define REGISTER_CONVERT_TO_RAW(x, y, z, a)
 135 #endif
 136
 137
 138 /* Fallback definition for EXTRACT_STRUCT_VALUE_ADDRESS */
 139 #ifndef EXTRACT_STRUCT_VALUE_ADDRESS
 140 #define EXTRACT_STRUCT_VALUE_ADDRESS_P (0)
 141 #define EXTRACT_STRUCT_VALUE_ADDRESS(X) (abort (), 0)
 142 #else
 143 #ifndef EXTRACT_STRUCT_VALUE_ADDRESS_P
 144 #define EXTRACT_STRUCT_VALUE_ADDRESS_P (1)
 145 #endif
 146 #endif
 147
 148
 149 /* Fallback definition for REGISTER_NAME for systems still defining
 150    REGISTER_NAMES. */
 151 #ifndef REGISTER_NAME
 152 extern char *gdb_register_names[];
 153 #define REGISTER_NAME(i) gdb_register_names[i]
 154 #endif
 155
 156
 157 /* Set the dynamic target-system-dependant parameters (architecture,
 158    byte-order, ...) using information found in the BFD */
 159
 160 extern void set_gdbarch_from_file PARAMS ((bfd *));
 161
 162
 163 /* Explicitly set the dynamic target-system-dependant parameters based
 164    on bfd_architecture and machine. */
 165
 166 extern void set_architecture_from_arch_mach PARAMS ((enum bfd_architecture, unsigned long));
 167
 168
 169 /* Helper function for targets that don't know how my arguments are
 170    being passed */
 171
 172 extern int frame_num_args_unknown PARAMS ((struct frame_info *fi));
 173
 174
 175 /* gdbarch trace variable */
 176 extern int gdbarch_debug;
 177
 178 #endif