gdb/config/mn10200/tm-mn10200.h

   1 /* Parameters for execution on a Matsushita mn10200 processor.
   2    Copyright 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,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 /* The mn10200 is little endian.  */
  24 #define TARGET_BYTE_ORDER LITTLE_ENDIAN
  25
  26 /* ints are only 16bits on the mn10200.  */
  27 #undef TARGET_INT_BIT
  28 #define TARGET_INT_BIT 16
  29
  30 /* The mn10200 doesn't support long long types.  */
  31 #undef TARGET_LONG_LONG_BIT
  32 #define TARGET_LONG_LONG_BIT 32
  33
  34 /* The mn10200 doesn't support double or long double either.  */
  35 #undef TARGET_DOUBLE_BIT
  36 #undef TARGET_LONG_DOUBLE_BIT
  37 #define TARGET_DOUBLE_BIT 32
  38 #define TARGET_LONG_DOUBLE_BIT 32
  39
  40 /* Not strictly correct, but the machine independent code is not
  41    ready to handle any of the basic sizes not being a power of two.  */
  42 #undef TARGET_PTR_BIT
  43 #define TARGET_PTR_BIT 32
  44
  45 /* The mn10200 really has 24 bit registers but the simulator reads/writes
  46    them as 32bit values, so we claim they're 32bits each.  This may have
  47    to be tweaked if the Matsushita emulator/board really deals with them
  48    as 24bits each.  */
  49 #define REGISTER_SIZE 4
  50
  51 #define MAX_REGISTER_RAW_SIZE REGISTER_SIZE
  52 #define NUM_REGS 11
  53
  54 #define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE)
  55
  56 #define REGISTER_NAMES \
  57 { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "sp", \
  58   "pc", "mdr", "psw"}
  59
  60 #define FP_REGNUM 6
  61 #define SP_REGNUM 7
  62 #define PC_REGNUM 8
  63 #define MDR_REGNUM 9
  64 #define PSW_REGNUM 10
  65
  66 /* Treat the registers as 32bit values.  */
  67 #define REGISTER_VIRTUAL_TYPE(REG) builtin_type_long
  68
  69 #define REGISTER_BYTE(REG) ((REG) * REGISTER_SIZE)
  70 #define REGISTER_VIRTUAL_SIZE(REG) REGISTER_SIZE
  71 #define REGISTER_RAW_SIZE(REG) REGISTER_SIZE
  72
  73 #define MAX_REGISTER_VIRTUAL_SIZE REGISTER_SIZE
  74
  75 /* The breakpoint instruction must be the same size as te smallest
  76    instruction in the instruction set.
  77
  78    The Matsushita mn10x00 processors have single byte instructions
  79    so we need a single byte breakpoint.  Matsushita hasn't defined
  80    one, so we defined it ourselves.
  81
  82    0xff is the only available single byte insn left on the mn10200.  */
  83 #define BREAKPOINT {0xff}
  84
  85 #define FUNCTION_START_OFFSET 0
  86
  87 #define DECR_PC_AFTER_BREAK 0
  88
  89 /* Stacks grow the normal way.  */
  90 #define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
  91
  92 #define SAVED_PC_AFTER_CALL(frame) \
  93   (read_memory_integer (read_register (SP_REGNUM), REGISTER_SIZE) & 0xffffff)
  94
  95 #ifdef __STDC__
  96 struct frame_info;
  97 struct frame_saved_regs;
  98 struct type;
  99 struct value;
 100 #endif
 101
 102 #define EXTRA_FRAME_INFO struct frame_saved_regs fsr; int status; int stack_size;
 103
 104 extern void mn10200_init_extra_frame_info PARAMS ((struct frame_info *));
 105 #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) mn10200_init_extra_frame_info (fi)
 106 #define INIT_FRAME_PC(x,y)
 107
 108 extern void mn10200_frame_find_saved_regs PARAMS ((struct frame_info *,
 109                                                 struct frame_saved_regs *));
 110 #define FRAME_FIND_SAVED_REGS(fi, regaddr) regaddr = fi->fsr
 111
 112 extern CORE_ADDR mn10200_frame_chain PARAMS ((struct frame_info *));
 113 #define FRAME_CHAIN(fi) mn10200_frame_chain (fi)
 114 #define FRAME_CHAIN_VALID(FP, FI)       generic_frame_chain_valid (FP, FI)
 115
 116 extern CORE_ADDR mn10200_find_callers_reg PARAMS ((struct frame_info *, int));
 117 extern CORE_ADDR mn10200_frame_saved_pc PARAMS ((struct frame_info *));
 118 #define FRAME_SAVED_PC(FI) (mn10200_frame_saved_pc (FI))
 119
 120 /* Extract from an array REGBUF containing the (raw) register state
 121    a function return value of type TYPE, and copy that, in virtual format,
 122    into VALBUF.  */
 123
 124 #define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
 125   { \
 126     if (TYPE_LENGTH (TYPE) > 8) \
 127       abort (); \
 128     else if (TYPE_LENGTH (TYPE) > 2 && TYPE_CODE (TYPE) != TYPE_CODE_PTR) \
 129       { \
 130         memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), 2); \
 131         memcpy (VALBUF + 2, REGBUF + REGISTER_BYTE (1), 2); \
 132       } \
 133     else if (TYPE_CODE (TYPE) == TYPE_CODE_PTR)\
 134       { \
 135         memcpy (VALBUF, REGBUF + REGISTER_BYTE (4), TYPE_LENGTH (TYPE)); \
 136       } \
 137     else \
 138       { \
 139         memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE)); \
 140       } \
 141   }
 142
 143 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
 144   extract_address (REGBUF + REGISTER_BYTE (4), \
 145                    REGISTER_RAW_SIZE (4))
 146
 147 #define STORE_RETURN_VALUE(TYPE, VALBUF) \
 148   { \
 149     if (TYPE_LENGTH (TYPE) > 8) \
 150       abort (); \
 151     else if (TYPE_LENGTH (TYPE) > 2 && TYPE_CODE (TYPE) != TYPE_CODE_PTR) \
 152       { \
 153         write_register_bytes (REGISTER_BYTE (0), VALBUF, 2); \
 154         write_register_bytes (REGISTER_BYTE (1), VALBUF + 2, 2); \
 155       } \
 156     else if (TYPE_CODE (TYPE) == TYPE_CODE_PTR)\
 157       { \
 158         write_register_bytes (REGISTER_BYTE (4), VALBUF, TYPE_LENGTH (TYPE)); \
 159       } \
 160     else \
 161       { \
 162         write_register_bytes (REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE)); \
 163       } \
 164   }
 165
 166 #define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \
 167   (SP) = mn10200_store_struct_return (STRUCT_ADDR, SP)
 168
 169 extern CORE_ADDR mn10200_skip_prologue PARAMS ((CORE_ADDR));
 170 #define SKIP_PROLOGUE(pc) (mn10200_skip_prologue (pc))
 171
 172 #define FRAME_ARGS_SKIP 0
 173
 174 #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
 175 #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
 176 #define FRAME_NUM_ARGS(fi) (-1)
 177
 178 extern void mn10200_pop_frame PARAMS ((struct frame_info *));
 179 #define POP_FRAME mn10200_pop_frame (get_current_frame ())
 180
 181 #define USE_GENERIC_DUMMY_FRAMES 1
 182 #define CALL_DUMMY                   {0}
 183 #define CALL_DUMMY_START_OFFSET      (0)
 184 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
 185 #define CALL_DUMMY_LOCATION          AT_ENTRY_POINT
 186 #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
 187 #define CALL_DUMMY_ADDRESS()         entry_point_address ()
 188
 189 extern CORE_ADDR mn10200_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));
 190 #define PUSH_RETURN_ADDRESS(PC, SP)  mn10200_push_return_address (PC, SP)
 191
 192 #define PUSH_DUMMY_FRAME        generic_push_dummy_frame ()
 193
 194 extern CORE_ADDR
 195   mn10200_push_arguments PARAMS ((int, struct value **, CORE_ADDR,
 196                                   unsigned char, CORE_ADDR));
 197 #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
 198   (mn10200_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR))
 199
 200 #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
 201
 202 #define REG_STRUCT_HAS_ADDR(gcc_p,TYPE) \
 203         (TYPE_LENGTH (TYPE) > 8)
 204
 205 extern use_struct_convention_fn mn10200_use_struct_convention;
 206 #define USE_STRUCT_CONVENTION(GCC_P, TYPE) mn10200_use_struct_convention (GCC_P, TYPE)
 207
 208 /* Override the default get_saved_register function with
 209    one that takes account of generic CALL_DUMMY frames.  */
 210 #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
 211       generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
 212
 213 /* Define this for Wingdb */
 214 #define TARGET_MN10200