gdb/config/m68k/tm-delta68.h

   1 /* Target definitions for delta68.
   2    Copyright 1993, 1994, 1998, 1999, 2000 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 #include "regcache.h"
  22
  23 /* Define BPT_VECTOR if it is different than the default.
  24    This is the vector number used by traps to indicate a breakpoint. */
  25
  26 #define BPT_VECTOR 0x1
  27
  28 #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled%"
  29 #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled%"
  30
  31 /* Amount PC must be decremented by after a breakpoint.
  32    On the Delta, the kernel decrements it for us.  */
  33
  34 #define DECR_PC_AFTER_BREAK 0
  35
  36 /* Not sure what happens if we try to store this register, but
  37    phdm@info.ucl.ac.be says we need this define.  */
  38
  39 #define CANNOT_STORE_REGISTER(regno)    (regno == FPI_REGNUM)
  40
  41 /* Extract from an array REGBUF containing the (raw) register state
  42    a function return value of type TYPE, and copy that, in virtual format,
  43    into VALBUF.  */
  44
  45 /* When it returns a float/double value, use fp0 in sysV68.  */
  46 /* When it returns a pointer value, use a0 in sysV68.  */
  47
  48 #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF)             \
  49   if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)                                \
  50     REGISTER_CONVERT_TO_VIRTUAL (FP0_REGNUM, TYPE,                      \
  51                                  &REGBUF[REGISTER_BYTE (FP0_REGNUM)],   \
  52                                  VALBUF);                               \
  53   else                                                                  \
  54     memcpy ((VALBUF),                                                   \
  55             (char *) ((REGBUF) +                                        \
  56                       (TYPE_CODE(TYPE) == TYPE_CODE_PTR ? 8 * 4 :       \
  57                        (TYPE_LENGTH(TYPE) >= 4 ? 0 : 4 - TYPE_LENGTH(TYPE)))), \
  58             TYPE_LENGTH(TYPE))
  59
  60 /* Write into appropriate registers a function return value
  61    of type TYPE, given in virtual format.  */
  62
  63 /* When it returns a float/double value, use fp0 in sysV68.  */
  64 /* When it returns a pointer value, use a0 in sysV68.  */
  65
  66 #define DEPRECATED_STORE_RETURN_VALUE(TYPE,VALBUF) \
  67   if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)                                \
  68       {                                                                 \
  69         char raw_buf[REGISTER_RAW_SIZE (FP0_REGNUM)];                   \
  70         REGISTER_CONVERT_TO_RAW (TYPE, FP0_REGNUM, VALBUF, raw_buf);    \
  71         write_register_bytes (REGISTER_BYTE (FP0_REGNUM),               \
  72                               raw_buf, REGISTER_RAW_SIZE (FP0_REGNUM)); \
  73       }                                                                 \
  74   else                                                                  \
  75     write_register_bytes ((TYPE_CODE(TYPE) == TYPE_CODE_PTR ? 8 * 4 : 0), \
  76                           VALBUF, TYPE_LENGTH (TYPE))
  77
  78 /* Return number of args passed to a frame.
  79    Can return -1, meaning no way to tell.  */
  80
  81 extern int delta68_frame_num_args (struct frame_info *fi);
  82 #define FRAME_NUM_ARGS(fi) (delta68_frame_num_args ((fi)))
  83
  84 /* On M68040 versions of sysV68 R3V7.1, ptrace(PT_WRITE_I) does not clear
  85    the processor's instruction cache as it should.  */
  86 #define CLEAR_INSN_CACHE()      clear_insn_cache()
  87
  88 #include "m68k/tm-m68k.h"
  89
  90 /* Extract from an array REGBUF containing the (raw) register state
  91    the address in which a function should return its structure value,
  92    as a CORE_ADDR (or an expression that can be used as one).  */
  93
  94 #undef DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS
  95 #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF)\
  96         (*(CORE_ADDR *)((char*)(REGBUF) + 8 * 4))
  97
  98 extern int delta68_in_sigtramp (CORE_ADDR pc, char *name);
  99 #define IN_SIGTRAMP(pc,name) delta68_in_sigtramp (pc, name)
 100
 101 extern CORE_ADDR delta68_frame_saved_pc (struct frame_info *fi);
 102 #undef FRAME_SAVED_PC
 103 #define FRAME_SAVED_PC(fi) delta68_frame_saved_pc (fi)
 104
 105 extern CORE_ADDR delta68_frame_args_address (struct frame_info *fi);
 106 #undef FRAME_ARGS_ADDRESS
 107 #define FRAME_ARGS_ADDRESS(fi) delta68_frame_args_address (fi)