gdb/config/d10v/tm-d10v.h

   1 /* Target-specific definition for the Mitsubishi D10V
   2    Copyright (C) 1996,1999 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 /* Contributed by Martin Hunt, hunt@cygnus.com */
  21
  22
  23 /* #define GDB_TARGET_IS_D10V - moved to gdbarch.h */
  24
  25 /* Define the bit, byte, and word ordering of the machine.  */
  26
  27 #define TARGET_BYTE_ORDER       BIG_ENDIAN
  28
  29 /* Offset from address of function to start of its code.
  30    Zero on most machines.  */
  31
  32 #define FUNCTION_START_OFFSET 0
  33
  34 /* these are the addresses the D10V-EVA board maps data */
  35 /* and instruction memory to. */
  36
  37 #define DMEM_START      0x0000000
  38 #define IMEM_START      0x1000000
  39 #define STACK_START     0x0007ffe
  40
  41 #ifdef __STDC__         /* Forward decls for prototypes */
  42 struct frame_info;
  43 struct frame_saved_regs;
  44 struct type;
  45 struct value;
  46 #endif
  47
  48 /* Advance PC across any function entry prologue instructions
  49    to reach some "real" code.  */
  50
  51 extern CORE_ADDR d10v_skip_prologue ();
  52 #define SKIP_PROLOGUE(ip) (d10v_skip_prologue (ip))
  53
  54 /* Stack grows downward.  */
  55 #define INNER_THAN(lhs,rhs) (core_addr_lessthan ((lhs), (rhs)))
  56
  57 /* for a breakpoint, use "dbt || nop" */
  58 extern breakpoint_from_pc_fn d10v_breakpoint_from_pc;
  59 #define BREAKPOINT_FROM_PC(PCPTR,LENPTR) (d10v_breakpoint_from_pc ((PCPTR), (LENPTR)))
  60
  61 /* If your kernel resets the pc after the trap happens you may need to
  62    define this before including this file.  */
  63 #define DECR_PC_AFTER_BREAK 4
  64
  65 extern char *d10v_register_name PARAMS ((int reg_nr));
  66 #define REGISTER_NAME(NR) (d10v_register_name (NR))
  67
  68 #define NUM_REGS 37
  69
  70 /* Register numbers of various important registers.
  71    Note that some of these values are "real" register numbers,
  72    and correspond to the general registers of the machine,
  73    and some are "phony" register numbers which are too large
  74    to be actual register numbers as far as the user is concerned
  75    but do serve to get the desired values when passed to read_register.  */
  76
  77 #define R0_REGNUM       0
  78 #define LR_REGNUM       13
  79 #define SP_REGNUM       15
  80 #define FP_REGNUM       11
  81 #define PC_REGNUM       18
  82 #define PSW_REGNUM      16
  83 #define IMAP0_REGNUM    32
  84 #define IMAP1_REGNUM    33
  85 #define DMAP_REGNUM     34
  86 #define A0_REGNUM       35
  87
  88 /* Say how much memory is needed to store a copy of the register set */
  89 #define REGISTER_BYTES    ((NUM_REGS-2)*2+16)
  90
  91 /* Index within `registers' of the first byte of the space for
  92    register N.  */
  93 extern int d10v_register_byte PARAMS ((int reg_nr));
  94 #define REGISTER_BYTE(N) (d10v_register_byte (N))
  95
  96 /* Number of bytes of storage in the actual machine representation
  97    for register N.  */
  98 extern int d10v_register_raw_size PARAMS ((int reg_nr));
  99 #define REGISTER_RAW_SIZE(N) (d10v_register_raw_size (N))
 100
 101 /* Number of bytes of storage in the program's representation
 102    for register N.  */
 103 extern int d10v_register_virtual_size PARAMS ((int reg_nr));
 104 #define REGISTER_VIRTUAL_SIZE(N) (d10v_register_virtual_size (N))
 105
 106 /* Largest value REGISTER_RAW_SIZE can have.  */
 107
 108 #define MAX_REGISTER_RAW_SIZE 8
 109
 110 /* Largest value REGISTER_VIRTUAL_SIZE can have.  */
 111
 112 #define MAX_REGISTER_VIRTUAL_SIZE 8
 113
 114 /* Return the GDB type object for the "standard" data type
 115    of data in register N.  */
 116
 117 extern struct type *d10v_register_virtual_type PARAMS ((int reg_nr));
 118 #define REGISTER_VIRTUAL_TYPE(N) (d10v_register_virtual_type (N))
 119
 120
 121 /* convert $pc and $sp to/from virtual addresses */
 122 extern int d10v_register_convertible PARAMS ((int nr));
 123 #define REGISTER_CONVERTIBLE(N) (d10v_register_convertible ((N)))
 124 extern void d10v_register_convert_to_virtual PARAMS ((int regnum, struct type *type, char *from, char *to));
 125 #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
 126   d10v_register_convert_to_virtual ((REGNUM), (TYPE), (FROM), (TO))
 127 extern void d10v_register_convert_to_raw PARAMS ((struct type *type, int regnum, char *from, char *to));
 128 #define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
 129   d10v_register_convert_to_raw ((TYPE), (REGNUM), (FROM), (TO))
 130
 131 extern CORE_ADDR d10v_make_daddr PARAMS ((CORE_ADDR x));
 132 #define D10V_MAKE_DADDR(x) (d10v_make_daddr (x))
 133 extern CORE_ADDR d10v_make_iaddr PARAMS ((CORE_ADDR x));
 134 #define D10V_MAKE_IADDR(x) (d10v_make_iaddr (x))
 135
 136 extern int d10v_daddr_p PARAMS ((CORE_ADDR x));
 137 #define D10V_DADDR_P(X) (d10v_daddr_p (X))
 138 extern int d10v_iaddr_p PARAMS ((CORE_ADDR x));
 139 #define D10V_IADDR_P(X)  (d10v_iaddr_p (X))
 140
 141 extern CORE_ADDR d10v_convert_daddr_to_raw PARAMS ((CORE_ADDR x));
 142 #define D10V_CONVERT_DADDR_TO_RAW(X) (d10v_convert_daddr_to_raw (X))
 143 extern CORE_ADDR d10v_convert_iaddr_to_raw PARAMS ((CORE_ADDR x));
 144 #define D10V_CONVERT_IADDR_TO_RAW(X) (d10v_convert_iaddr_to_raw (X))
 145
 146 #define ARG1_REGNUM R0_REGNUM
 147 #define ARGN_REGNUM 3
 148 #define RET1_REGNUM R0_REGNUM
 149
 150 /* Store the address of the place in which to copy the structure the
 151    subroutine will return.  This is called from call_function.
 152
 153    We store structs through a pointer passed in the first Argument
 154    register. */
 155
 156 extern void d10v_store_struct_return PARAMS ((CORE_ADDR addr, CORE_ADDR sp));
 157 #define STORE_STRUCT_RETURN(ADDR, SP) d10v_store_struct_return ((ADDR), (SP))
 158
 159
 160 /* Write into appropriate registers a function return value
 161    of type TYPE, given in virtual format.
 162
 163    Things always get returned in RET1_REGNUM, RET2_REGNUM, ... */
 164
 165 extern void d10v_store_return_value PARAMS ((struct type *type, char *valbuf));
 166 #define STORE_RETURN_VALUE(TYPE,VALBUF) d10v_store_return_value ((TYPE), (VALBUF))
 167
 168
 169 /* Extract from an array REGBUF containing the (raw) register state
 170    the address in which a function should return its structure value,
 171    as a CORE_ADDR (or an expression that can be used as one).  */
 172
 173 extern CORE_ADDR d10v_extract_struct_value_address PARAMS ((char *regbuf));
 174 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (d10v_extract_struct_value_address ((REGBUF)))
 175
 176 /* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of
 177    EXTRACT_RETURN_VALUE?  GCC_P is true if compiled with gcc
 178    and TYPE is the type (which is known to be struct, union or array).
 179
 180    The d10v returns anything less than 8 bytes in size in
 181    registers. */
 182
 183 extern use_struct_convention_fn d10v_use_struct_convention;
 184 #define USE_STRUCT_CONVENTION(gcc_p, type) d10v_use_struct_convention (gcc_p, type)
 185
 186 \f
 187
 188 /* Define other aspects of the stack frame.
 189    we keep a copy of the worked out return pc lying around, since it
 190    is a useful bit of info */
 191
 192 #define EXTRA_FRAME_INFO \
 193     CORE_ADDR return_pc; \
 194     int frameless; \
 195     int size;
 196
 197 #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
 198     d10v_init_extra_frame_info(fromleaf, fi)
 199
 200 extern void d10v_init_extra_frame_info PARAMS (( int fromleaf, struct frame_info *fi ));
 201
 202 /* A macro that tells us whether the function invocation represented
 203    by FI does not have a frame on the stack associated with it.  If it
 204    does not, FRAMELESS is set to 1, else 0.  */
 205
 206 #define FRAMELESS_FUNCTION_INVOCATION(FI) \
 207   (frameless_look_for_prologue (FI))
 208
 209 extern CORE_ADDR d10v_frame_chain PARAMS ((struct frame_info *frame));
 210 #define FRAME_CHAIN(FRAME)       d10v_frame_chain(FRAME)
 211 extern int d10v_frame_chain_valid PARAMS ((CORE_ADDR, struct frame_info *));
 212 #define FRAME_CHAIN_VALID(chain, thisframe) d10v_frame_chain_valid (chain, thisframe)
 213 extern CORE_ADDR d10v_frame_saved_pc PARAMS ((struct frame_info *fi));
 214 #define FRAME_SAVED_PC(fi) (d10v_frame_saved_pc ((fi)))
 215 extern CORE_ADDR d10v_frame_args_address PARAMS ((struct frame_info *fi));
 216 #define FRAME_ARGS_ADDRESS(fi) (d10v_frame_args_address ((fi)))
 217 extern CORE_ADDR d10v_frame_locals_address PARAMS ((struct frame_info *fi));
 218 #define FRAME_LOCALS_ADDRESS(fi) (d10v_frame_locals_address ((fi)))
 219
 220 /* Immediately after a function call, return the saved pc.  We can't */
 221 /* use frame->return_pc beause that is determined by reading R13 off the */
 222 /*stack and that may not be written yet. */
 223
 224 extern CORE_ADDR d10v_saved_pc_after_call PARAMS ((struct frame_info *frame));
 225 #define SAVED_PC_AFTER_CALL(frame) (d10v_saved_pc_after_call ((frame)))
 226
 227 /* Set VAL to the number of args passed to frame described by FI.
 228    Can set VAL to -1, meaning no way to tell.  */
 229 /* We can't tell how many args there are */
 230
 231 #define FRAME_NUM_ARGS(fi) (-1)
 232
 233 /* Return number of bytes at start of arglist that are not really args.  */
 234
 235 #define FRAME_ARGS_SKIP 0
 236
 237
 238 /* Put here the code to store, into a struct frame_saved_regs,
 239    the addresses of the saved registers of frame described by FRAME_INFO.
 240    This includes special registers such as pc and fp saved in special
 241    ways in the stack frame.  sp is even more special:
 242    the address we return for it IS the sp for the next frame.  */
 243
 244 #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs)         \
 245    d10v_frame_find_saved_regs(frame_info, &(frame_saved_regs))
 246
 247 extern void d10v_frame_find_saved_regs PARAMS ((struct frame_info *, struct frame_saved_regs *));
 248
 249 /* DUMMY FRAMES.  Need these to support inferior function calls.  They
 250    work like this on D10V: First we set a breakpoint at 0 or __start.
 251    Then we push all the registers onto the stack.  Then put the
 252    function arguments in the proper registers and set r13 to our
 253    breakpoint address.  Finally, the PC is set to the start of the
 254    function being called (no JSR/BSR insn).  When it hits the
 255    breakpoint, clear the break point and pop the old register contents
 256    off the stack.  */
 257
 258 extern void d10v_pop_frame PARAMS ((struct frame_info *frame));
 259 #define POP_FRAME generic_pop_current_frame (d10v_pop_frame)
 260
 261 #define USE_GENERIC_DUMMY_FRAMES 1
 262 #define CALL_DUMMY                   {0}
 263 #define CALL_DUMMY_START_OFFSET      (0)
 264 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
 265 #define CALL_DUMMY_LOCATION          AT_ENTRY_POINT
 266 #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
 267 #define CALL_DUMMY_ADDRESS()         entry_point_address ()
 268 extern CORE_ADDR d10v_push_return_address PARAMS ((CORE_ADDR pc, CORE_ADDR sp));
 269 #define PUSH_RETURN_ADDRESS(PC, SP)  d10v_push_return_address (PC, SP)
 270
 271 #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
 272 /* #define PC_IN_CALL_DUMMY(pc, sp, frame_address) ( pc == IMEM_START + 4 ) */
 273
 274 #define PUSH_DUMMY_FRAME        generic_push_dummy_frame ()
 275
 276 /* override the default get_saved_register function with one that
 277    takes account of generic CALL_DUMMY frames */
 278 #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
 279         generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
 280
 281 #define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
 282   (d10v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
 283 extern CORE_ADDR d10v_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR));
 284
 285
 286 /* Extract from an array REGBUF containing the (raw) register state
 287    a function return value of type TYPE, and copy that, in virtual format,
 288    into VALBUF.  */
 289
 290 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
 291 d10v_extract_return_value(TYPE, REGBUF, VALBUF)
 292   extern void
 293 d10v_extract_return_value PARAMS ((struct type *, char *, char *));
 294
 295
 296 #define REGISTER_SIZE 2
 297
 298 #ifdef CC_HAS_LONG_LONG
 299 #  define LONGEST long long
 300 #else
 301 #  define LONGEST long
 302 #endif
 303 #define ULONGEST unsigned LONGEST
 304
 305 void d10v_write_pc PARAMS ((CORE_ADDR val, int pid));
 306 CORE_ADDR d10v_read_pc PARAMS ((int pid));
 307 void d10v_write_sp PARAMS ((CORE_ADDR val));
 308 CORE_ADDR d10v_read_sp PARAMS ((void));
 309 void d10v_write_fp PARAMS ((CORE_ADDR val));
 310 CORE_ADDR d10v_read_fp PARAMS ((void));
 311
 312 #define TARGET_READ_PC(pid)             d10v_read_pc (pid)
 313 #define TARGET_WRITE_PC(val,pid)        d10v_write_pc (val, pid)
 314 #define TARGET_READ_FP()                d10v_read_fp ()
 315 #define TARGET_WRITE_FP(val)            d10v_write_fp (val)
 316 #define TARGET_READ_SP()                d10v_read_sp ()
 317 #define TARGET_WRITE_SP(val)            d10v_write_sp (val)
 318
 319 /* Number of bits in the appropriate type */
 320 #define TARGET_INT_BIT (2 * TARGET_CHAR_BIT)
 321 #define TARGET_PTR_BIT (4 * TARGET_CHAR_BIT)
 322 #define TARGET_DOUBLE_BIT (4 * TARGET_CHAR_BIT)
 323 #define TARGET_LONG_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 324
 325 \f
 326 /* For the d10v when talking to the remote d10v board, GDB addresses
 327    need to be translated into a format that the d10v rom monitor
 328    understands. */
 329
 330 extern void remote_d10v_translate_xfer_address PARAMS ((CORE_ADDR gdb_addr, int gdb_len, CORE_ADDR *rem_addr, int *rem_len));
 331 #define REMOTE_TRANSLATE_XFER_ADDRESS(GDB_ADDR, GDB_LEN, REM_ADDR, REM_LEN) \
 332  remote_d10v_translate_xfer_address ((GDB_ADDR), (GDB_LEN), (REM_ADDR), (REM_LEN))
 333