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 /* Advance PC across any function entry prologue instructions
  35    to reach some "real" code.  */
  36
  37 extern CORE_ADDR d10v_skip_prologue ();
  38 #define SKIP_PROLOGUE(ip) (d10v_skip_prologue (ip))
  39
  40 /* Stack grows downward.  */
  41 #define INNER_THAN(lhs,rhs) (core_addr_lessthan ((lhs), (rhs)))
  42
  43 /* for a breakpoint, use "dbt || nop" */
  44 extern breakpoint_from_pc_fn d10v_breakpoint_from_pc;
  45 #define BREAKPOINT_FROM_PC(PCPTR,LENPTR) (d10v_breakpoint_from_pc ((PCPTR), (LENPTR)))
  46
  47 /* If your kernel resets the pc after the trap happens you may need to
  48    define this before including this file.  */
  49 #define DECR_PC_AFTER_BREAK 4
  50
  51 extern char *d10v_register_name PARAMS ((int reg_nr));
  52 #define REGISTER_NAME(NR) (d10v_register_name (NR))
  53
  54 #define NUM_REGS 37
  55
  56 /* Register numbers of various important registers.
  57    Note that some of these values are "real" register numbers,
  58    and correspond to the general registers of the machine,
  59    and some are "phony" register numbers which are too large
  60    to be actual register numbers as far as the user is concerned
  61    but do serve to get the desired values when passed to read_register.  */
  62
  63 /* Used by both d10v-tdep.c and remote-d10v.c */
  64
  65 #define R0_REGNUM       0
  66 #define LR_REGNUM       13
  67 #define SP_REGNUM       15
  68 #define FP_REGNUM       11
  69 #define PC_REGNUM       18
  70 #define PSW_REGNUM      16
  71 #define IMAP0_REGNUM    32
  72 #define IMAP1_REGNUM    33
  73 #define DMAP_REGNUM     34
  74 #define A0_REGNUM       35
  75
  76 /* ??? */
  77 #define REGISTER_SIZE 2
  78
  79 /* Say how much memory is needed to store a copy of the register set */
  80 #define REGISTER_BYTES    ((37/*NUM_REGS*/-2)*2+16)
  81
  82 /* Index within `registers' of the first byte of the space for
  83    register N.  */
  84 extern int d10v_register_byte PARAMS ((int reg_nr));
  85 #define REGISTER_BYTE(N) (d10v_register_byte (N))
  86
  87 /* Number of bytes of storage in the actual machine representation
  88    for register N.  */
  89 extern int d10v_register_raw_size PARAMS ((int reg_nr));
  90 #define REGISTER_RAW_SIZE(N) (d10v_register_raw_size (N))
  91
  92 /* Number of bytes of storage in the program's representation
  93    for register N.  */
  94 extern int d10v_register_virtual_size PARAMS ((int reg_nr));
  95 #define REGISTER_VIRTUAL_SIZE(N) (d10v_register_virtual_size (N))
  96
  97 /* Largest value REGISTER_RAW_SIZE can have.  */
  98
  99 #define MAX_REGISTER_RAW_SIZE 8
 100
 101 /* Largest value REGISTER_VIRTUAL_SIZE can have.  */
 102
 103 #define MAX_REGISTER_VIRTUAL_SIZE 8
 104
 105 /* Return the GDB type object for the "standard" data type
 106    of data in register N.  */
 107
 108 extern struct type *d10v_register_virtual_type PARAMS ((int reg_nr));
 109 #define REGISTER_VIRTUAL_TYPE(N) (d10v_register_virtual_type (N))
 110
 111 /* convert $pc and $sp to/from virtual addresses */
 112 extern int d10v_register_convertible PARAMS ((int nr));
 113 extern void d10v_register_convert_to_virtual PARAMS ((int regnum, struct type *type, char *from, char *to));
 114 extern void d10v_register_convert_to_raw PARAMS ((struct type *type, int regnum, char *from, char *to));
 115 #define REGISTER_CONVERTIBLE(N) (d10v_register_convertible ((N)))
 116 #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
 117   d10v_register_convert_to_virtual ((REGNUM), (TYPE), (FROM), (TO))
 118 #define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
 119   d10v_register_convert_to_raw ((TYPE), (REGNUM), (FROM), (TO))
 120
 121 extern CORE_ADDR d10v_make_daddr PARAMS ((CORE_ADDR x));
 122 #define D10V_MAKE_DADDR(x) (d10v_make_daddr (x))
 123 extern CORE_ADDR d10v_make_iaddr PARAMS ((CORE_ADDR x));
 124 #define D10V_MAKE_IADDR(x) (d10v_make_iaddr (x))
 125
 126 extern int d10v_daddr_p PARAMS ((CORE_ADDR x));
 127 #define D10V_DADDR_P(X) (d10v_daddr_p (X))
 128 extern int d10v_iaddr_p PARAMS ((CORE_ADDR x));
 129 #define D10V_IADDR_P(X)  (d10v_iaddr_p (X))
 130
 131 extern CORE_ADDR d10v_convert_daddr_to_raw PARAMS ((CORE_ADDR x));
 132 #define D10V_CONVERT_DADDR_TO_RAW(X) (d10v_convert_daddr_to_raw (X))
 133 extern CORE_ADDR d10v_convert_iaddr_to_raw PARAMS ((CORE_ADDR x));
 134 #define D10V_CONVERT_IADDR_TO_RAW(X) (d10v_convert_iaddr_to_raw (X))
 135
 136 /* Store the address of the place in which to copy the structure the
 137    subroutine will return.  This is called from call_function.
 138
 139    We store structs through a pointer passed in the first Argument
 140    register. */
 141
 142 extern void d10v_store_struct_return PARAMS ((CORE_ADDR addr, CORE_ADDR sp));
 143 #define STORE_STRUCT_RETURN(ADDR, SP) d10v_store_struct_return ((ADDR), (SP))
 144
 145
 146 /* Write into appropriate registers a function return value
 147    of type TYPE, given in virtual format.
 148
 149    Things always get returned in RET1_REGNUM, RET2_REGNUM, ... */
 150
 151 extern void d10v_store_return_value PARAMS ((struct type *type, char *valbuf));
 152 #define STORE_RETURN_VALUE(TYPE,VALBUF) d10v_store_return_value ((TYPE), (VALBUF))
 153
 154
 155 /* Extract from an array REGBUF containing the (raw) register state
 156    the address in which a function should return its structure value,
 157    as a CORE_ADDR (or an expression that can be used as one).  */
 158
 159 extern CORE_ADDR d10v_extract_struct_value_address PARAMS ((char *regbuf));
 160 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (d10v_extract_struct_value_address ((REGBUF)))
 161
 162 /* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of
 163    EXTRACT_RETURN_VALUE?  GCC_P is true if compiled with gcc
 164    and TYPE is the type (which is known to be struct, union or array).
 165
 166    The d10v returns anything less than 8 bytes in size in
 167    registers. */
 168
 169 extern use_struct_convention_fn d10v_use_struct_convention;
 170 #define USE_STRUCT_CONVENTION(gcc_p, type) d10v_use_struct_convention (gcc_p, type)
 171
 172 \f
 173 /* Define other aspects of the stack frame.
 174    we keep a copy of the worked out return pc lying around, since it
 175    is a useful bit of info */
 176
 177 extern void d10v_init_extra_frame_info PARAMS ((int fromleaf, struct frame_info *fi));
 178 #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
 179     d10v_init_extra_frame_info(fromleaf, fi)
 180
 181 /* A macro that tells us whether the function invocation represented
 182    by FI does not have a frame on the stack associated with it.  If it
 183    does not, FRAMELESS is set to 1, else 0.  */
 184
 185 #define FRAMELESS_FUNCTION_INVOCATION(FI) \
 186   (frameless_look_for_prologue (FI))
 187
 188 extern CORE_ADDR d10v_frame_chain PARAMS ((struct frame_info *frame));
 189 #define FRAME_CHAIN(FRAME)       d10v_frame_chain(FRAME)
 190 extern int d10v_frame_chain_valid PARAMS ((CORE_ADDR, struct frame_info *));
 191 #define FRAME_CHAIN_VALID(chain, thisframe) d10v_frame_chain_valid (chain, thisframe)
 192 extern CORE_ADDR d10v_frame_saved_pc PARAMS ((struct frame_info *fi));
 193 #define FRAME_SAVED_PC(fi) (d10v_frame_saved_pc ((fi)))
 194 extern CORE_ADDR d10v_frame_args_address PARAMS ((struct frame_info *fi));
 195 #define FRAME_ARGS_ADDRESS(fi) (d10v_frame_args_address ((fi)))
 196 extern CORE_ADDR d10v_frame_locals_address PARAMS ((struct frame_info *fi));
 197 #define FRAME_LOCALS_ADDRESS(fi) (d10v_frame_locals_address ((fi)))
 198
 199 /* Immediately after a function call, return the saved pc.  We can't */
 200 /* use frame->return_pc beause that is determined by reading R13 off the */
 201 /*stack and that may not be written yet. */
 202
 203 extern CORE_ADDR d10v_saved_pc_after_call PARAMS ((struct frame_info *frame));
 204 #define SAVED_PC_AFTER_CALL(frame) (d10v_saved_pc_after_call ((frame)))
 205
 206 /* Set VAL to the number of args passed to frame described by FI.
 207    Can set VAL to -1, meaning no way to tell.  */
 208 /* We can't tell how many args there are */
 209
 210 #define FRAME_NUM_ARGS(fi) (-1)
 211
 212 /* Return number of bytes at start of arglist that are not really args.  */
 213
 214 #define FRAME_ARGS_SKIP 0
 215
 216 /* Put here the code to store, into frame_info->saved_regs, the
 217    addresses of the saved registers of frame described by FRAME_INFO.
 218    This includes special registers such as pc and fp saved in special
 219    ways in the stack frame.  sp is even more special: the address we
 220    return for it IS the sp for the next frame.  */
 221
 222 extern void d10v_frame_init_saved_regs PARAMS ((struct frame_info *));
 223 #define FRAME_INIT_SAVED_REGS(frame_info)           \
 224    d10v_frame_init_saved_regs(frame_info)
 225
 226 /* DUMMY FRAMES.  Need these to support inferior function calls.  They
 227    work like this on D10V: First we set a breakpoint at 0 or __start.
 228    Then we push all the registers onto the stack.  Then put the
 229    function arguments in the proper registers and set r13 to our
 230    breakpoint address.  Finally, the PC is set to the start of the
 231    function being called (no JSR/BSR insn).  When it hits the
 232    breakpoint, clear the break point and pop the old register contents
 233    off the stack.  */
 234
 235 extern void d10v_pop_frame PARAMS ((void));
 236 #define POP_FRAME d10v_pop_frame ()
 237
 238 #define USE_GENERIC_DUMMY_FRAMES 1
 239 #define CALL_DUMMY                   {0}
 240 #define CALL_DUMMY_START_OFFSET      (0)
 241 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
 242 #define CALL_DUMMY_LOCATION          AT_ENTRY_POINT
 243 #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
 244 #define CALL_DUMMY_ADDRESS()         entry_point_address ()
 245 extern CORE_ADDR d10v_push_return_address PARAMS ((CORE_ADDR pc, CORE_ADDR sp));
 246 #define PUSH_RETURN_ADDRESS(PC, SP)  d10v_push_return_address (PC, SP)
 247
 248 #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
 249 /* #define PC_IN_CALL_DUMMY(pc, sp, frame_address) ( pc == IMEM_START + 4 ) */
 250
 251 #define PUSH_DUMMY_FRAME        generic_push_dummy_frame ()
 252
 253 /* override the default get_saved_register function with one that
 254    takes account of generic CALL_DUMMY frames */
 255 #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
 256         generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
 257
 258 #define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
 259   (d10v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
 260 extern CORE_ADDR d10v_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR));
 261
 262
 263 /* Extract from an array REGBUF containing the (raw) register state
 264    a function return value of type TYPE, and copy that, in virtual format,
 265    into VALBUF.  */
 266
 267 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
 268 d10v_extract_return_value(TYPE, REGBUF, VALBUF)
 269 extern void d10v_extract_return_value PARAMS ((struct type *, char *, char *));
 270
 271
 272 void d10v_write_pc PARAMS ((CORE_ADDR val, int pid));
 273 CORE_ADDR d10v_read_pc PARAMS ((int pid));
 274 void d10v_write_sp PARAMS ((CORE_ADDR val));
 275 CORE_ADDR d10v_read_sp PARAMS ((void));
 276 void d10v_write_fp PARAMS ((CORE_ADDR val));
 277 CORE_ADDR d10v_read_fp PARAMS ((void));
 278
 279 #define TARGET_READ_PC(pid)             d10v_read_pc (pid)
 280 #define TARGET_WRITE_PC(val,pid)        d10v_write_pc (val, pid)
 281 #define TARGET_READ_FP()                d10v_read_fp ()
 282 #define TARGET_WRITE_FP(val)            d10v_write_fp (val)
 283 #define TARGET_READ_SP()                d10v_read_sp ()
 284 #define TARGET_WRITE_SP(val)            d10v_write_sp (val)
 285
 286 /* Number of bits in the appropriate type */
 287 #define TARGET_INT_BIT (2 * TARGET_CHAR_BIT)
 288 #define TARGET_PTR_BIT (4 * TARGET_CHAR_BIT)
 289 #define TARGET_DOUBLE_BIT (4 * TARGET_CHAR_BIT)
 290 #define TARGET_LONG_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 291
 292 \f
 293 /* For the d10v when talking to the remote d10v board, GDB addresses
 294    need to be translated into a format that the d10v rom monitor
 295    understands. */
 296
 297 extern void remote_d10v_translate_xfer_address PARAMS ((CORE_ADDR gdb_addr, int gdb_len, CORE_ADDR *rem_addr, int *rem_len));
 298 #define REMOTE_TRANSLATE_XFER_ADDRESS(GDB_ADDR, GDB_LEN, REM_ADDR, REM_LEN) \
 299  remote_d10v_translate_xfer_address ((GDB_ADDR), (GDB_LEN), (REM_ADDR), (REM_LEN))
 300