File:  [gforth] / gforth / arch / generic / machine.h
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Mon Dec 31 15:25:18 2012 UTC (9 years, 7 months ago) by anton
Branches: MAIN
CVS tags: HEAD
updated copyright year

    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) 1995,1998,1999,2003,2007,2008,2010,2012 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 3
   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, see http://www.gnu.org/licenses/.
   21: */
   22: 
   23: /* define SYSCALL */
   24: 
   25: #ifndef SYSCALL
   26: #define SYSCALL
   27: #endif
   28: 
   29: #ifndef SYSSIGNALS
   30: #define SYSSIGNALS
   31: #endif
   32: 
   33: #ifndef USE_FTOS
   34: #ifndef USE_NO_FTOS
   35: /* keep top of FP stack in register. Since most processors have FP
   36:    registers and they are hardly used in gforth, this is usually a
   37:    good idea.  The 88100 has no separate FP regs, but many general
   38:    purpose regs, so it should be ok */
   39: #define USE_FTOS
   40: #endif
   41: #endif
   42: 
   43: #ifndef USE_TOS
   44: #ifndef USE_NO_TOS
   45: /* keep top of data stack in register.  Usually a good idea unless registers are very scarce */
   46: #define USE_TOS
   47: #endif
   48: #endif
   49: 
   50: #ifndef CLOBBER_TOS_WORKAROUND_START
   51: #define CLOBBER_TOS_WORKAROUND_START
   52: #define CLOBBER_TOS_WORKAROUND_END
   53: #endif
   54: 
   55: #ifndef INDIRECT_THREADED
   56: #ifndef DIRECT_THREADED
   57: #define DIRECT_THREADED
   58: #endif
   59: #endif
   60: 
   61: /* Types: these types are used as Forth's internal types */
   62: 
   63: /* define this if IEEE singles and doubles are available as C data types */
   64: #define IEEE_FP
   65: 
   66: /* the IEEE types are used only for loading and storing */
   67: /* the IEEE double precision type */
   68: typedef double DFloat;
   69: /* the IEEE single precision type */
   70: typedef float SFloat;
   71: 
   72: typedef CELL_TYPE Cell;
   73: typedef unsigned CELL_TYPE UCell;
   74: typedef Cell Bool;
   75: typedef unsigned char Char;
   76: typedef double Float;
   77: typedef Char *Address;
   78: 
   79: #if defined(DOUBLY_INDIRECT)
   80: typedef void **Label;
   81: #else /* !defined(DOUBLY_INDIRECT) */
   82: typedef void *Label;
   83: #endif /* !defined(DOUBLY_INDIRECT) */
   84: 
   85: /* feature defines, these setting should be identical to the ones in machpc.fs */
   86: 
   87: #ifndef STANDALONE
   88: /* #warning hosted system */
   89: #define HAS_FILE
   90: #define HAS_FLOATING
   91: #define HAS_OS
   92: #define HAS_DEBUG
   93: #define HAS_GLOCALS
   94: #define HAS_HASH
   95: #ifndef HAS_PEEPHOLE
   96: #define HAS_PEEPHOLE
   97: #endif
   98: #else
   99: #warning standalone system
  100: #undef HAS_FILE
  101: #undef HAS_FLOATING
  102: #undef HAS_OS
  103: #undef HAS_DEBUG
  104: #undef HAS_GLOCALS
  105: #undef HAS_HASH
  106: #define HAS_F83HEADERSTRING
  107: #ifndef PUTC
  108: # define PUTC(x) emit_char(x)
  109: #endif
  110: #ifndef TYPE
  111: # define TYPE(x, l) type_chars(x, l)
  112: #endif
  113: #endif
  114: #define HAS_DCOMPS
  115: #define HAS_XCONDS
  116: #define HAS_STANDARDTHREADING
  117: 
  118: #if SIZEOF_CHAR_P==8
  119: #define HAS_64BIT
  120: #endif
  121: 
  122: #define HAS_OBJECTS
  123: 
  124: #define RELINFOBITS	8

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