gdb/config/fr30/tm-fr30.h

   1 /* Parameters for execution on a Fujitsu FR30 processor.
   2
   3 This file is part of GDB.
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #define FR30_GENREGS            16
  20 #define FR30_DEDICATEDREGS      8
  21 #define FR30_REGSIZE            4       /* bytes */
  22
  23 #define NUM_REGS (FR30_GENREGS + FR30_DEDICATEDREGS)
  24 #define REGISTER_BYTES ((FR30_GENREGS + FR30_DEDICATEDREGS)*FR30_REGSIZE)
  25
  26 /* Index within `registers' of the first byte of the space for
  27    register N.  */
  28 #define REGISTER_BYTE(N) ((N) * FR30_REGSIZE)
  29
  30 /* Initializer for an array of names of registers.
  31    There should be NUM_REGS strings in this initializer.  */
  32 #define REGISTER_NAMES \
  33 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", \
  34   "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
  35   "pc", "ps", "tbr", "rp", "ssp", "usp", "mdh", "mdl" }
  36
  37 /* Offset from address of function to start of its code.
  38    Zero on most machines.  */
  39 #define FUNCTION_START_OFFSET 0
  40
  41 /* Amount PC must be decremented by after a breakpoint.
  42    This is often the number of bytes in BREAKPOINT
  43    but not always.  */
  44
  45 #define DECR_PC_AFTER_BREAK 0
  46
  47 /* Stack grows downward.  */
  48
  49 #define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
  50
  51 #define TARGET_BYTE_ORDER BIG_ENDIAN
  52
  53 #define R0_REGNUM  0
  54 #define R1_REGNUM  1
  55 #define R2_REGNUM  2
  56 #define R3_REGNUM  3
  57 #define R4_REGNUM  4
  58 #define R5_REGNUM  5
  59 #define R6_REGNUM  6
  60 #define R7_REGNUM  7
  61 #define R8_REGNUM  8
  62 #define R9_REGNUM  9
  63 #define R10_REGNUM  10
  64 #define R11_REGNUM  11
  65 #define R12_REGNUM  12
  66 #define R13_REGNUM  13
  67 #define FP_REGNUM 14            /* Frame pointer */
  68 #define SP_REGNUM 15            /* Stack pointer */
  69 #define PC_REGNUM 16            /* Program counter */
  70 #define RP_REGNUM 19            /* Return pointer */
  71
  72 #define FIRST_ARGREG    R4_REGNUM       /* first arg (or struct ret val addr) */
  73 #define LAST_ARGREG     R7_REGNUM       /* fourth (or third arg) */
  74 #define RETVAL_REG      R4_REGNUM       /* return vaue */
  75
  76 /* Say how long (ordinary) registers are.  This is a piece of bogosity
  77    used in push_word and a few other places; REGISTER_RAW_SIZE is the
  78    real way to know how big a register is.  */
  79 #define REGISTER_SIZE FR30_REGSIZE
  80
  81 /* Number of bytes of storage in the actual machine representation
  82    for register N.  */
  83 #define REGISTER_RAW_SIZE(N) FR30_REGSIZE
  84
  85 /* Largest value REGISTER_RAW_SIZE can have.  */
  86 #define MAX_REGISTER_RAW_SIZE FR30_REGSIZE
  87
  88 /* Number of bytes of storage in the program's representation
  89    for register N.  */
  90 #define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_SIZE(N)
  91
  92 /* Largest value REGISTER_VIRTUAL_SIZE can have.  */
  93 #define MAX_REGISTER_VIRTUAL_SIZE FR30_REGSIZE
  94
  95 extern void fr30_pop_frame PARAMS ((void));
  96 #define POP_FRAME fr30_pop_frame()
  97
  98 #define USE_GENERIC_DUMMY_FRAMES
  99 #define CALL_DUMMY                   {0}
 100 #define CALL_DUMMY_START_OFFSET      (0)
 101 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
 102 #define CALL_DUMMY_LOCATION          AT_ENTRY_POINT
 103 #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
 104 #define CALL_DUMMY_ADDRESS()         entry_point_address ()
 105 extern CORE_ADDR fr30_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));
 106 #define PUSH_RETURN_ADDRESS(PC, SP)  fr30_push_return_address (PC, SP)
 107
 108
 109 #define PUSH_DUMMY_FRAME        generic_push_dummy_frame ()
 110
 111
 112 /* Number of bytes at start of arglist that are not really args.  */
 113 #define FRAME_ARGS_SKIP 0
 114
 115 /* Return the GDB type object for the "standard" data type
 116    of data in register N.  */
 117 #define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
 118
 119 /* Extract from an array REGBUF containing the (raw) register state
 120    a function return value of type TYPE, and copy that, in virtual format,
 121    into VALBUF.  */
 122 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
 123     memcpy (VALBUF, REGBUF + REGISTER_BYTE(RETVAL_REG), TYPE_LENGTH (TYPE))
 124
 125 /* Extract from an array REGBUF containing the (raw) register state
 126    the address in which a function should return its structure value,
 127    as a CORE_ADDR (or an expression that can be used as one).  */
 128 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
 129   extract_address (REGBUF + REGISTER_BYTE (RETVAL_REG), \
 130                    REGISTER_RAW_SIZE (RETVAL_REG))
 131
 132 #define STORE_STRUCT_RETURN(ADDR, SP) \
 133   { write_register (RETVAL_REG, (ADDR)); }
 134
 135
 136
 137 #define FRAME_ARGS_ADDRESS(fi) (fi->frame)
 138 #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
 139
 140 /* Return number of args passed to a frame.
 141    Can return -1, meaning no way to tell.  */
 142 #define FRAME_NUM_ARGS(numargs, fi) (numargs = -1)
 143
 144 #ifdef __STDC__         /* Forward decls for prototypes */
 145 struct frame_info;
 146 struct frame_saved_regs;
 147 struct type;
 148 struct value;
 149 #endif
 150
 151 #define EXTRA_FRAME_INFO \
 152   struct frame_saved_regs fsr;  \
 153   int framesize;                \
 154   int frameoffset;              \
 155   int framereg;
 156
 157 extern CORE_ADDR fr30_frame_chain PARAMS ((struct frame_info *fi));
 158 #define FRAME_CHAIN(fi) fr30_frame_chain (fi)
 159
 160 extern CORE_ADDR fr30_frame_saved_pc   PARAMS ((struct frame_info *));
 161 #define FRAME_SAVED_PC(fi) (fr30_frame_saved_pc (fi))
 162
 163 #define SAVED_PC_AFTER_CALL(fi) read_register (RP_REGNUM)
 164
 165 extern CORE_ADDR fr30_skip_prologue PARAMS ((CORE_ADDR pc));
 166 #define SKIP_PROLOGUE(pc) pc = fr30_skip_prologue (pc)
 167
 168 /* Write into appropriate registers a function return value
 169    of type TYPE, given in virtual format.  */
 170
 171 #define STORE_RETURN_VALUE(TYPE,VALBUF) \
 172     write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE))
 173
 174 /* Put here the code to store, into a struct frame_saved_regs,
 175    the addresses of the saved registers of frame described by FRAME_INFO.
 176    This includes special registers such as pc and fp saved in special
 177    ways in the stack frame.  sp is even more special:
 178    the address we return for it IS the sp for the next frame.  */
 179 #define FRAME_FIND_SAVED_REGS(fi, regaddr) regaddr = fi->fsr
 180
 181 /* Use INT #BREAKPOINT_INTNUM instruction for breakpoint */
 182 #define FR30_BREAKOP    0x1f    /* opcode, type D instruction */
 183 #define BREAKPOINT_INTNUM 9     /* one of the reserved traps */
 184 #define BREAKPOINT {FR30_BREAKOP, BREAKPOINT_INTNUM}
 185
 186 /* Define this for Wingdb */
 187 #define TARGET_FR30
 188
 189 #if(1) /* Z.R. */
 190
 191 /*ARM example*/
 192
 193 /* IEEE format floating point */
 194 #define IEEE_FLOAT
 195
 196 /* Define other aspects of the stack frame.  */
 197
 198 /* A macro that tells us whether the function invocation represented
 199    by FI does not have a frame on the stack associated with it.  If it
 200    does not, FRAMELESS is set to 1, else 0.  */
 201 #define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
 202 {                                                       \
 203   CORE_ADDR func_start, after_prologue;                 \
 204   func_start = (get_pc_function_start ((FI)->pc) +      \
 205                 FUNCTION_START_OFFSET);                 \
 206   after_prologue = func_start;                          \
 207   SKIP_PROLOGUE (after_prologue);                       \
 208   (FRAMELESS) = (after_prologue == func_start);         \
 209 }
 210
 211 /*V850 example*/
 212
 213 extern void fr30_init_extra_frame_info PARAMS ((struct frame_info *fi));
 214 #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) fr30_init_extra_frame_info (fi)
 215
 216 #define FRAME_CHAIN_VALID(FP, FI)       generic_frame_chain_valid (FP, FI)
 217
 218 extern CORE_ADDR
 219 fr30_push_arguments PARAMS ((int nargs, struct value **args, CORE_ADDR sp,
 220                              int struct_return,
 221                              CORE_ADDR struct_addr));
 222 #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
 223   (SP) = fr30_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
 224
 225 #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
 226
 227 #define USE_STRUCT_CONVENTION(GCC_P, TYPE) \
 228         (TYPE_NFIELDS (TYPE) > 1 || TYPE_LENGTH (TYPE) > 4)
 229
 230 #endif /* Z.R. */