File:  [gforth] / gforth / arch / generic / machine.h
Revision 1.17: download - view: text, annotated - select for diffs
Fri Mar 22 20:36:25 2002 UTC (20 years, 1 month ago) by anton
Branches: MAIN
CVS tags: HEAD
cleaned up #defines of DIRECT_THREADED and INDIRECT_THREADED
introduced engine gforth-itc (indirect threading, no replication)
fixed bug in indirect threading

    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: #ifdef GFORTH_DEBUGGING
   29: /* schedule the ip update after the rest of the primitive;
   30:    never mind speed */
   31: #undef THREADING_SCHEME
   32: #ifdef DIRECT_THREADED
   33: #define THREADING_SCHEME 10
   34: #else
   35: #define THREADING_SCHEME 8
   36: #endif /* DIRECT_THREADED */
   37: #endif /* GFORTH_DEBUGGING */
   38: 
   39: 
   40: /* define SYSCALL */
   41: 
   42: #ifndef SYSCALL
   43: #define SYSCALL
   44: #endif
   45: 
   46: #ifndef SYSSIGNALS
   47: #define SYSSIGNALS
   48: #endif
   49: 
   50: #ifndef USE_FTOS
   51: #ifndef USE_NO_FTOS
   52: /* keep top of FP stack in register. Since most processors have FP
   53:    registers and they are hardly used in gforth, this is usually a
   54:    good idea.  The 88100 has no separate FP regs, but many general
   55:    purpose regs, so it should be ok */
   56: #define USE_FTOS
   57: #endif
   58: #endif
   59: /* I don't do the same for the data stack (i.e. USE_TOS), since this
   60:    loses on processors with few registers. USE_TOS might be defined in
   61:    the processor-specific files */
   62: 
   63: #ifndef INDIRECT_THREADED
   64: #ifndef DIRECT_THREADED
   65: #define DIRECT_THREADED
   66: #endif
   67: #endif
   68: 
   69: /* Types: these types are used as Forth's internal types */
   70: 
   71: /* define this if IEEE singles and doubles are available as C data types */
   72: #define IEEE_FP
   73: 
   74: /* the IEEE types are used only for loading and storing */
   75: /* the IEEE double precision type */
   76: typedef double DFloat;
   77: /* the IEEE single precision type */
   78: typedef float SFloat;
   79: 
   80: typedef CELL_TYPE Cell;
   81: typedef unsigned CELL_TYPE UCell;
   82: typedef Cell Bool;
   83: typedef unsigned char Char;
   84: typedef double Float;
   85: typedef Char *Address;
   86: 
   87: #if defined(DOUBLY_INDIRECT)
   88: typedef void **Label;
   89: #else /* !defined(DOUBLY_INDIRECT) */
   90: typedef void *Label;
   91: #endif /* !defined(DOUBLY_INDIRECT) */
   92: 
   93: /* feature defines, these setting should be identical to the ones in machpc.fs */
   94: 
   95: #define HAS_DCOMPS
   96: #define HAS_FILE
   97: #define HAS_FLOATING
   98: #define HAS_GLOCALS
   99: #define HAS_HASH
  100: #define HAS_OS
  101: #define HAS_XCONDS
  102: #define HAS_STANDARDTHREADING
  103: #define HAS_DEBUG
  104: #ifndef HAS_PEEPHOLE
  105: #define HAS_PEEPHOLE
  106: #endif
  107: 
  108: #define RELINFOBITS	8

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