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,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 /* Contributed by Martin Hunt, hunt@cygnus.com */
  22
  23 #define GDB_MULTI_ARCH 1
  24
  25 /* #define GDB_TARGET_IS_D10V - moved to gdbarch.h */
  26
  27 /* Define the bit, byte, and word ordering of the machine.  */
  28
  29 #if !GDB_MULTI_ARCH
  30
  31 #define TARGET_BYTE_ORDER       BIG_ENDIAN
  32
  33 /* Offset from address of function to start of its code.
  34    Zero on most machines.  */
  35
  36 #define FUNCTION_START_OFFSET 0
  37
  38 /* Advance PC across any function entry prologue instructions
  39    to reach some "real" code.  */
  40
  41 extern CORE_ADDR d10v_skip_prologue ();
  42 #define SKIP_PROLOGUE(ip) (d10v_skip_prologue (ip))
  43
  44 /* Stack grows downward.  */
  45 #define INNER_THAN(lhs,rhs) (core_addr_lessthan ((lhs), (rhs)))
  46
  47 /* for a breakpoint, use "dbt || nop" */
  48 extern breakpoint_from_pc_fn d10v_breakpoint_from_pc;
  49 #define BREAKPOINT_FROM_PC(PCPTR,LENPTR) (d10v_breakpoint_from_pc ((PCPTR), (LENPTR)))
  50
  51 /* If your kernel resets the pc after the trap happens you may need to
  52    define this before including this file.  */
  53 #define DECR_PC_AFTER_BREAK 4
  54
  55 extern char *d10v_register_name PARAMS ((int reg_nr));
  56 #define REGISTER_NAME(NR) (d10v_register_name (NR))
  57
  58 #define NUM_REGS 37
  59
  60 #endif /* GDB_MULTI_ARCH */
  61
  62 /* Register numbers of various important registers.
  63    Note that some of these values are "real" register numbers,
  64    and correspond to the general registers of the machine,
  65    and some are "phony" register numbers which are too large
  66    to be actual register numbers as far as the user is concerned
  67    but do serve to get the desired values when passed to read_register.  */
  68
  69 /* Used by both d10v-tdep.c and remote-d10v.c */
  70
  71 #define R0_REGNUM       0
  72 #define LR_REGNUM       13
  73 #if !GDB_MULTI_ARCH
  74 #define SP_REGNUM       15
  75 #define FP_REGNUM       11
  76 #define PC_REGNUM       18
  77 #endif
  78 #define PSW_REGNUM      16
  79 #define IMAP0_REGNUM    32
  80 #define IMAP1_REGNUM    33
  81 #define DMAP_REGNUM     34
  82 #define A0_REGNUM       35
  83
  84 #if !GDB_MULTI_ARCH
  85
  86 /* ??? */
  87 #define REGISTER_SIZE 2
  88
  89 /* Say how much memory is needed to store a copy of the register set */
  90 #define REGISTER_BYTES    ((37/*NUM_REGS*/-2)*2+16)
  91
  92 /* Index within `registers' of the first byte of the space for
  93    register N.  */
  94 extern int d10v_register_byte PARAMS ((int reg_nr));
  95 #define REGISTER_BYTE(N) (d10v_register_byte (N))
  96
  97 /* Number of bytes of storage in the actual machine representation
  98    for register N.  */
  99 extern int d10v_register_raw_size PARAMS ((int reg_nr));
 100 #define REGISTER_RAW_SIZE(N) (d10v_register_raw_size (N))
 101
 102 /* Number of bytes of storage in the program's representation
 103    for register N.  */
 104 extern int d10v_register_virtual_size PARAMS ((int reg_nr));
 105 #define REGISTER_VIRTUAL_SIZE(N) (d10v_register_virtual_size (N))
 106
 107 /* Largest value REGISTER_RAW_SIZE can have.  */
 108
 109 #define MAX_REGISTER_RAW_SIZE 8
 110
 111 /* Largest value REGISTER_VIRTUAL_SIZE can have.  */
 112
 113 #define MAX_REGISTER_VIRTUAL_SIZE 8
 114
 115 /* Return the GDB type object for the "standard" data type
 116    of data in register N.  */
 117
 118 extern struct type *d10v_register_virtual_type PARAMS ((int reg_nr));
 119 #define REGISTER_VIRTUAL_TYPE(N) (d10v_register_virtual_type (N))
 120
 121 /* convert $pc and $sp to/from virtual addresses */
 122 extern int d10v_register_convertible PARAMS ((int nr));
 123 extern void d10v_register_convert_to_virtual PARAMS ((int regnum, struct type * type, char *from, char *to));
 124 extern void d10v_register_convert_to_raw PARAMS ((struct type * type, int regnum, char *from, char *to));
 125 #define REGISTER_CONVERTIBLE(N) (d10v_register_convertible ((N)))
 126 #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
 127   d10v_register_convert_to_virtual ((REGNUM), (TYPE), (FROM), (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 /* Store the address of the place in which to copy the structure the
 147    subroutine will return.  This is called from call_function.
 148
 149    We store structs through a pointer passed in the first Argument
 150    register. */
 151
 152 extern void d10v_store_struct_return PARAMS ((CORE_ADDR addr, CORE_ADDR sp));
 153 #define STORE_STRUCT_RETURN(ADDR, SP) d10v_store_struct_return ((ADDR), (SP))
 154
 155
 156 /* Write into appropriate registers a function return value
 157    of type TYPE, given in virtual format.
 158
 159    Things always get returned in RET1_REGNUM, RET2_REGNUM, ... */
 160
 161 extern void d10v_store_return_value PARAMS ((struct type * type, char *valbuf));
 162 #define STORE_RETURN_VALUE(TYPE,VALBUF) d10v_store_return_value ((TYPE), (VALBUF))
 163
 164
 165 /* Extract from an array REGBUF containing the (raw) register state
 166    the address in which a function should return its structure value,
 167    as a CORE_ADDR (or an expression that can be used as one).  */
 168
 169 extern CORE_ADDR d10v_extract_struct_value_address PARAMS ((char *regbuf));
 170 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (d10v_extract_struct_value_address ((REGBUF)))
 171
 172 /* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of
 173    EXTRACT_RETURN_VALUE?  GCC_P is true if compiled with gcc
 174    and TYPE is the type (which is known to be struct, union or array).
 175
 176    The d10v returns anything less than 8 bytes in size in
 177    registers. */
 178
 179 extern use_struct_convention_fn d10v_use_struct_convention;
 180 #define USE_STRUCT_CONVENTION(gcc_p, type) d10v_use_struct_convention (gcc_p, type)
 181 \f
 182
 183 /* Define other aspects of the stack frame.
 184    we keep a copy of the worked out return pc lying around, since it
 185    is a useful bit of info */
 186
 187 extern void d10v_init_extra_frame_info PARAMS ((int fromleaf, struct frame_info * fi));
 188 #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
 189     d10v_init_extra_frame_info(fromleaf, fi)
 190
 191 /* A macro that tells us whether the function invocation represented
 192    by FI does not have a frame on the stack associated with it.  If it
 193    does not, FRAMELESS is set to 1, else 0.  */
 194
 195 #define FRAMELESS_FUNCTION_INVOCATION(FI) \
 196   (frameless_look_for_prologue (FI))
 197
 198 extern CORE_ADDR d10v_frame_chain PARAMS ((struct frame_info * frame));
 199 #define FRAME_CHAIN(FRAME)       d10v_frame_chain(FRAME)
 200 extern int d10v_frame_chain_valid PARAMS ((CORE_ADDR, struct frame_info *));
 201 #define FRAME_CHAIN_VALID(chain, thisframe) d10v_frame_chain_valid (chain, thisframe)
 202 extern CORE_ADDR d10v_frame_saved_pc PARAMS ((struct frame_info * fi));
 203 #define FRAME_SAVED_PC(fi) (d10v_frame_saved_pc ((fi)))
 204 extern CORE_ADDR d10v_frame_args_address PARAMS ((struct frame_info * fi));
 205 #define FRAME_ARGS_ADDRESS(fi) (d10v_frame_args_address ((fi)))
 206 extern CORE_ADDR d10v_frame_locals_address PARAMS ((struct frame_info * fi));
 207 #define FRAME_LOCALS_ADDRESS(fi) (d10v_frame_locals_address ((fi)))
 208
 209 /* Immediately after a function call, return the saved pc.  We can't */
 210 /* use frame->return_pc beause that is determined by reading R13 off the */
 211 /*stack and that may not be written yet. */
 212
 213 extern CORE_ADDR d10v_saved_pc_after_call PARAMS ((struct frame_info * frame));
 214 #define SAVED_PC_AFTER_CALL(frame) (d10v_saved_pc_after_call ((frame)))
 215
 216 /* Set VAL to the number of args passed to frame described by FI.
 217    Can set VAL to -1, meaning no way to tell.  */
 218 /* We can't tell how many args there are */
 219
 220 #define FRAME_NUM_ARGS(fi) (-1)
 221
 222 /* Return number of bytes at start of arglist that are not really args.  */
 223
 224 #define FRAME_ARGS_SKIP 0
 225
 226 /* Put here the code to store, into frame_info->saved_regs, the
 227    addresses of the saved registers of frame described by FRAME_INFO.
 228    This includes special registers such as pc and fp saved in special
 229    ways in the stack frame.  sp is even more special: the address we
 230    return for it IS the sp for the next frame.  */
 231
 232 extern void d10v_frame_init_saved_regs PARAMS ((struct frame_info *));
 233 #define FRAME_INIT_SAVED_REGS(frame_info)           \
 234    d10v_frame_init_saved_regs(frame_info)
 235
 236 /* DUMMY FRAMES.  Need these to support inferior function calls.  They
 237    work like this on D10V: First we set a breakpoint at 0 or __start.
 238    Then we push all the registers onto the stack.  Then put the
 239    function arguments in the proper registers and set r13 to our
 240    breakpoint address.  Finally, the PC is set to the start of the
 241    function being called (no JSR/BSR insn).  When it hits the
 242    breakpoint, clear the break point and pop the old register contents
 243    off the stack.  */
 244
 245 extern void d10v_pop_frame PARAMS ((void));
 246 #define POP_FRAME d10v_pop_frame ()
 247
 248 #define USE_GENERIC_DUMMY_FRAMES 1
 249 #define CALL_DUMMY                   {0}
 250 #define CALL_DUMMY_START_OFFSET      (0)
 251 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
 252 #define CALL_DUMMY_LOCATION          AT_ENTRY_POINT
 253 #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
 254 #define CALL_DUMMY_ADDRESS()         entry_point_address ()
 255 extern CORE_ADDR d10v_push_return_address PARAMS ((CORE_ADDR pc, CORE_ADDR sp));
 256 #define PUSH_RETURN_ADDRESS(PC, SP)  d10v_push_return_address (PC, SP)
 257
 258 #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
 259 /* #define PC_IN_CALL_DUMMY(pc, sp, frame_address) ( pc == IMEM_START + 4 ) */
 260
 261 #define PUSH_DUMMY_FRAME        generic_push_dummy_frame ()
 262
 263 /* override the default get_saved_register function with one that
 264    takes account of generic CALL_DUMMY frames */
 265 #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
 266         generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
 267
 268 #define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
 269   (d10v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
 270 extern CORE_ADDR d10v_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR));
 271
 272
 273 /* Extract from an array REGBUF containing the (raw) register state
 274    a function return value of type TYPE, and copy that, in virtual format,
 275    into VALBUF.  */
 276
 277 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
 278 d10v_extract_return_value(TYPE, REGBUF, VALBUF)
 279 extern void d10v_extract_return_value PARAMS ((struct type *, char *, char *));
 280
 281
 282 void d10v_write_pc PARAMS ((CORE_ADDR val, int pid));
 283 CORE_ADDR d10v_read_pc PARAMS ((int pid));
 284 void d10v_write_sp PARAMS ((CORE_ADDR val));
 285 CORE_ADDR d10v_read_sp PARAMS ((void));
 286 void d10v_write_fp PARAMS ((CORE_ADDR val));
 287 CORE_ADDR d10v_read_fp PARAMS ((void));
 288
 289 #define TARGET_READ_PC(pid)             d10v_read_pc (pid)
 290 #define TARGET_WRITE_PC(val,pid)        d10v_write_pc (val, pid)
 291 #define TARGET_READ_FP()                d10v_read_fp ()
 292 #define TARGET_WRITE_FP(val)            d10v_write_fp (val)
 293 #define TARGET_READ_SP()                d10v_read_sp ()
 294 #define TARGET_WRITE_SP(val)            d10v_write_sp (val)
 295
 296 /* Number of bits in the appropriate type */
 297 #define TARGET_INT_BIT (2 * TARGET_CHAR_BIT)
 298 #define TARGET_PTR_BIT (4 * TARGET_CHAR_BIT)
 299 #define TARGET_DOUBLE_BIT (4 * TARGET_CHAR_BIT)
 300 #define TARGET_LONG_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
 301 \f
 302
 303 /* For the d10v when talking to the remote d10v board, GDB addresses
 304    need to be translated into a format that the d10v rom monitor
 305    understands. */
 306
 307 extern void remote_d10v_translate_xfer_address PARAMS ((CORE_ADDR gdb_addr, int gdb_len, CORE_ADDR * rem_addr, int *rem_len));
 308 #define REMOTE_TRANSLATE_XFER_ADDRESS(GDB_ADDR, GDB_LEN, REM_ADDR, REM_LEN) \
 309  remote_d10v_translate_xfer_address ((GDB_ADDR), (GDB_LEN), (REM_ADDR), (REM_LEN))
 310
 311 #endif