gdb/config/mn10300/tm-mn10300.h

   1 /* Parameters for execution on a Matsushita mn10300 processor.
   2    Copyright 1996, 1997 Free Software Foundation, Inc.
   3
   4    Contributed by Geoffrey Noer <noer@cygnus.com>
   5
   6 This file is part of GDB.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  21
  22 /* The mn10300 is little endian.  */
  23 #define TARGET_BYTE_ORDER_DEFAULT LITTLE_ENDIAN
  24
  25 /* All registers are 32bits (phew!).  */
  26 #define REGISTER_SIZE 4
  27 #define MAX_REGISTER_RAW_SIZE 4
  28 #define NUM_REGS 32
  29
  30 #define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
  31
  32 #define REGISTER_BYTE(REG) ((REG) * 4)
  33 #define REGISTER_VIRTUAL_SIZE(REG) 4
  34 #define REGISTER_RAW_SIZE(REG) 4
  35
  36 #define MAX_REGISTER_VIRTUAL_SIZE 4
  37
  38 #define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE)
  39
  40 extern char **mn10300_register_names;
  41 #define REGISTER_NAME(i) mn10300_register_names[i]
  42
  43 #define D2_REGNUM 2
  44 #define D3_REGNUM 3
  45 #define A2_REGNUM 6
  46 #define A3_REGNUM 7
  47 #define SP_REGNUM 8
  48 #define PC_REGNUM 9
  49 #define MDR_REGNUM 10
  50 #define PSW_REGNUM 11
  51 #define LIR_REGNUM 12
  52 #define LAR_REGNUM 13
  53
  54 /* Pseudo register that contains true address of executing stack frame */
  55 #define FP_REGNUM 31
  56
  57 /* BREAKPOINT_FROM_PC uses the program counter value to determine the
  58    breakpoint that should be used */
  59 extern breakpoint_from_pc_fn mn10300_breakpoint_from_pc;
  60 #define BREAKPOINT_FROM_PC(pcptr, lenptr) mn10300_breakpoint_from_pc (pcptr, lenptr)
  61
  62 #define FUNCTION_START_OFFSET 0
  63
  64 #define DECR_PC_AFTER_BREAK 0
  65
  66 #define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
  67
  68 #define SAVED_PC_AFTER_CALL(frame) \
  69   read_memory_integer (read_register (SP_REGNUM), 4)
  70
  71 #ifdef __STDC__
  72 struct frame_info;
  73 struct type;
  74 struct value;
  75 #endif
  76
  77 extern void mn10300_init_extra_frame_info PARAMS ((struct frame_info *));
  78 #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) mn10300_init_extra_frame_info (fi)
  79 #define INIT_FRAME_PC           /* Not necessary */
  80
  81 #define FRAME_INIT_SAVED_REGS(fi) /* handled by init_extra_frame_info */
  82
  83 extern CORE_ADDR mn10300_frame_chain PARAMS ((struct frame_info *));
  84 #define FRAME_CHAIN(fi) mn10300_frame_chain (fi)
  85 #define FRAME_CHAIN_VALID(FP, FI)       generic_frame_chain_valid (FP, FI)
  86
  87 extern CORE_ADDR mn10300_find_callers_reg PARAMS ((struct frame_info *, int));
  88 extern CORE_ADDR mn10300_frame_saved_pc   PARAMS ((struct frame_info *));
  89 #define FRAME_SAVED_PC(FI) (mn10300_frame_saved_pc (FI))
  90
  91 /* Extract from an array REGBUF containing the (raw) register state
  92    a function return value of type TYPE, and copy that, in virtual format,
  93    into VALBUF. */
  94
  95 #define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
  96   if (TYPE_CODE (TYPE) == TYPE_CODE_PTR) \
  97     memcpy (VALBUF, REGBUF + REGISTER_BYTE (4), TYPE_LENGTH (TYPE)); \
  98   else \
  99     memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE));
 100
 101
 102 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
 103   extract_address (REGBUF + REGISTER_BYTE (4), \
 104                    REGISTER_RAW_SIZE (4))
 105
 106 #define STORE_RETURN_VALUE(TYPE, VALBUF) \
 107   if (TYPE_CODE (TYPE) == TYPE_CODE_PTR) \
 108     write_register_bytes(REGISTER_BYTE (4), VALBUF, TYPE_LENGTH (TYPE)); \
 109   else \
 110     write_register_bytes(REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE));
 111
 112 #define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \
 113   (SP) = mn10300_store_struct_return (STRUCT_ADDR, SP)
 114
 115 extern CORE_ADDR mn10300_skip_prologue PARAMS ((CORE_ADDR));
 116 #define SKIP_PROLOGUE(pc) pc = mn10300_skip_prologue (pc)
 117
 118 #define FRAME_ARGS_SKIP 0
 119
 120 #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
 121 #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
 122 #define FRAME_NUM_ARGS(val, fi) ((val) = -1)
 123
 124 extern void mn10300_pop_frame PARAMS ((struct frame_info *));
 125 #define POP_FRAME mn10300_pop_frame (get_current_frame ())
 126
 127 #define USE_GENERIC_DUMMY_FRAMES
 128 #define CALL_DUMMY                   {0}
 129 #define CALL_DUMMY_START_OFFSET      (0)
 130 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
 131 #define CALL_DUMMY_LOCATION          AT_ENTRY_POINT
 132 #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
 133 #define CALL_DUMMY_ADDRESS()         entry_point_address ()
 134
 135 extern CORE_ADDR mn10300_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));
 136 #define PUSH_RETURN_ADDRESS(PC, SP)  mn10300_push_return_address (PC, SP)
 137
 138 #define PUSH_DUMMY_FRAME        generic_push_dummy_frame ()
 139
 140 extern CORE_ADDR
 141 mn10300_push_arguments PARAMS ((int, struct value **, CORE_ADDR,
 142                                 unsigned char, CORE_ADDR ));
 143 #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
 144   (SP) = mn10300_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
 145
 146 #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
 147
 148 #define REG_STRUCT_HAS_ADDR(gcc_p,TYPE) \
 149         (TYPE_LENGTH (TYPE) > 8)
 150
 151 extern use_struct_convention_fn mn10300_use_struct_convention;
 152 #define USE_STRUCT_CONVENTION(GCC_P, TYPE) mn10300_use_struct_convention (GCC_P, TYPE)
 153
 154 /* override the default get_saved_register function with
 155    one that takes account of generic CALL_DUMMY frames */
 156 #define GET_SAVED_REGISTER
 157
 158 /* Cons up virtual frame pointer for trace */
 159 extern void mn10300_virtual_frame_pointer PARAMS ((CORE_ADDR, long *, long *));
 160 #define TARGET_VIRTUAL_FRAME_POINTER(PC, REGP, OFFP) \
 161         mn10300_virtual_frame_pointer ((PC), (REGP), (OFFP))
 162
 163 /* Define this for Wingdb */
 164
 165 #define TARGET_MN10300