File:  [gforth] / gforth / arch / generic / machine.h
Revision 1.4: download - view: text, annotated - select for diffs
Sun Nov 22 23:18:10 1998 UTC (23 years, 9 months ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Added system-specific options for C-part of primitives

    1: /*
    2:   This is a generic file for 32-bit machines with IEEE FP arithmetic (no VMS).
    3:   It only supports indirect threading.
    4: 
    5:   Copyright (C) 1995 Free Software Foundation, Inc.
    6: 
    7:   This file is part of Gforth.
    8: 
    9:   Gforth is free software; you can redistribute it and/or
   10:   modify it under the terms of the GNU General Public License
   11:   as published by the Free Software Foundation; either version 2
   12:   of the License, or (at your option) any later version.
   13: 
   14:   This program is distributed in the hope that it will be useful,
   15:   but WITHOUT ANY WARRANTY; without even the implied warranty of
   16:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   17:   GNU General Public License for more details.
   18: 
   19:   You should have received a copy of the GNU General Public License
   20:   along with this program; if not, write to the Free Software
   21:   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   22: */
   23: 
   24: /* define SYSCALL */
   25: 
   26: #ifndef SYSCALL
   27: #define SYSCALL
   28: #endif
   29: 
   30: #ifndef USE_FTOS
   31: #ifndef USE_NO_FTOS
   32: /* keep top of FP stack in register. Since most processors have FP
   33:    registers and they are hardly used in gforth, this is usually a
   34:    good idea.  The 88100 has no separate FP regs, but many general
   35:    purpose regs, so it should be ok */
   36: #define USE_FTOS
   37: #endif
   38: #endif
   39: /* I don't do the same for the data stack (i.e. USE_TOS), since this
   40:    loses on processors with few registers. USE_TOS might be defined in
   41:    the processor-specific files */
   42: 
   43: #ifdef DIRECT_THREADED
   44: /* If you want direct threading, write a .h file for your processor! */
   45: /* We could put some stuff here that causes a compile error, but then
   46:    we could not use this file in the other machine.h files */
   47: #endif
   48: 
   49: /* Types: these types are used as Forth's internal types */
   50: 
   51: /* define this if IEEE singles and doubles are available as C data types */
   52: #define IEEE_FP
   53: 
   54: /* the IEEE types are used only for loading and storing */
   55: /* the IEEE double precision type */
   56: typedef double DFloat;
   57: /* the IEEE single precision type */
   58: typedef float SFloat;
   59: 
   60: typedef CELL_TYPE Cell;
   61: typedef unsigned CELL_TYPE UCell;
   62: typedef Cell Bool;
   63: typedef unsigned char Char;
   64: typedef double Float;
   65: typedef Char *Address;
   66: 
   67: #if defined(DOUBLY_INDIRECT)
   68: typedef void **Label;
   69: #else /* !defined(DOUBLY_INDIRECT) */
   70: typedef void *Label;
   71: #endif /* !defined(DOUBLY_INDIRECT) */
   72: 
   73: /* feature defines */
   74: 
   75: #define HAS_DCOMPS
   76: #define HAS_FILE
   77: #define HAS_FLOATING
   78: #define HAS_GLOCALS
   79: #define HAS_HASH
   80: #define HAS_OS
   81: #define HAS_XCONDS

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