File:  [gforth] / gforth / arch / generic / machine.h
Revision 1.18: download - view: text, annotated - select for diffs
Wed Aug 28 17:50:28 2002 UTC (19 years, 5 months ago) by anton
Branches: MAIN
CVS tags: HEAD
gforth now stores a local ip to saved_ip instead of using a global ip
  associated changes in register allocation, threading, documentation
testdist now also tests vmgen and vmgen-ex

    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) 1995,1998,1999 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., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   22: */
   23: 
   24: #ifndef THREADING_SCHEME
   25: #define THREADING_SCHEME 6
   26: #endif
   27: 
   28: /* define SYSCALL */
   29: 
   30: #ifndef SYSCALL
   31: #define SYSCALL
   32: #endif
   33: 
   34: #ifndef SYSSIGNALS
   35: #define SYSSIGNALS
   36: #endif
   37: 
   38: #ifndef USE_FTOS
   39: #ifndef USE_NO_FTOS
   40: /* keep top of FP stack in register. Since most processors have FP
   41:    registers and they are hardly used in gforth, this is usually a
   42:    good idea.  The 88100 has no separate FP regs, but many general
   43:    purpose regs, so it should be ok */
   44: #define USE_FTOS
   45: #endif
   46: #endif
   47: /* I don't do the same for the data stack (i.e. USE_TOS), since this
   48:    loses on processors with few registers. USE_TOS might be defined in
   49:    the processor-specific files */
   50: 
   51: #ifndef INDIRECT_THREADED
   52: #ifndef DIRECT_THREADED
   53: #define DIRECT_THREADED
   54: #endif
   55: #endif
   56: 
   57: /* Types: these types are used as Forth's internal types */
   58: 
   59: /* define this if IEEE singles and doubles are available as C data types */
   60: #define IEEE_FP
   61: 
   62: /* the IEEE types are used only for loading and storing */
   63: /* the IEEE double precision type */
   64: typedef double DFloat;
   65: /* the IEEE single precision type */
   66: typedef float SFloat;
   67: 
   68: typedef CELL_TYPE Cell;
   69: typedef unsigned CELL_TYPE UCell;
   70: typedef Cell Bool;
   71: typedef unsigned char Char;
   72: typedef double Float;
   73: typedef Char *Address;
   74: 
   75: #if defined(DOUBLY_INDIRECT)
   76: typedef void **Label;
   77: #else /* !defined(DOUBLY_INDIRECT) */
   78: typedef void *Label;
   79: #endif /* !defined(DOUBLY_INDIRECT) */
   80: 
   81: /* feature defines, these setting should be identical to the ones in machpc.fs */
   82: 
   83: #define HAS_DCOMPS
   84: #define HAS_FILE
   85: #define HAS_FLOATING
   86: #define HAS_GLOCALS
   87: #define HAS_HASH
   88: #define HAS_OS
   89: #define HAS_XCONDS
   90: #define HAS_STANDARDTHREADING
   91: #define HAS_DEBUG
   92: #ifndef HAS_PEEPHOLE
   93: #define HAS_PEEPHOLE
   94: #endif
   95: 
   96: #define RELINFOBITS	8

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