File:  [gforth] / gforth / arch / generic / machine.h
Revision 1.27: download - view: text, annotated - select for diffs
Mon Apr 9 22:36:01 2007 UTC (14 years, 9 months ago) by pazsan
Branches: MAIN
CVS tags: HEAD
Some stuff to get closer to run Gforth on NXT

    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) 1995,1998,1999,2003 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: /* define SYSCALL */
   25: 
   26: #ifndef SYSCALL
   27: #define SYSCALL
   28: #endif
   29: 
   30: #ifndef SYSSIGNALS
   31: #define SYSSIGNALS
   32: #endif
   33: 
   34: #ifndef USE_FTOS
   35: #ifndef USE_NO_FTOS
   36: /* keep top of FP stack in register. Since most processors have FP
   37:    registers and they are hardly used in gforth, this is usually a
   38:    good idea.  The 88100 has no separate FP regs, but many general
   39:    purpose regs, so it should be ok */
   40: #define USE_FTOS
   41: #endif
   42: #endif
   43: 
   44: #ifndef USE_TOS
   45: #ifndef USE_NO_TOS
   46: /* keep top of data stack in register.  Usually a good idea unless registers are very scarce */
   47: #define USE_TOS
   48: #endif
   49: #endif
   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: #ifndef STANDALONE
   84: #warning hosted system
   85: #define HAS_FILE
   86: #define HAS_FLOATING
   87: #define HAS_OS
   88: #define HAS_DEBUG
   89: #define HAS_GLOCALS
   90: #define HAS_HASH
   91: #ifndef HAS_PEEPHOLE
   92: #define HAS_PEEPHOLE
   93: #endif
   94: #else
   95: #warning standalone system
   96: #undef HAS_FILE
   97: #undef HAS_FLOATING
   98: #undef HAS_OS
   99: #undef HAS_DEBUG
  100: #undef HAS_GLOCALS
  101: #undef HAS_HASH
  102: #define HAS_F83HEADERSTRING
  103: #ifndef PUTC
  104: # define PUTC(x) emit_char(x)
  105: #endif
  106: #ifndef TYPE
  107: # define TYPE(x, l) type_chars(x, l)
  108: #endif
  109: #endif
  110: #define HAS_DCOMPS
  111: #define HAS_XCONDS
  112: #define HAS_STANDARDTHREADING
  113: 
  114: #define RELINFOBITS	8

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