Diff for /gforth/Attic/forth.h between versions 1.1 and 1.21

version 1.1, 1994/02/11 16:30:46 version 1.21, 1996/02/13 11:12:17
Line 1 Line 1
 /*  /* common header file
   Copyright 1992 by the ANSI figForth Development Group    Copyright (C) 1995 Free Software Foundation, Inc.
     This file is part of Gforth.
     Gforth is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     GNU General Public License for more details.
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */  */
 /* common header file */  #include "config.h"
   #include <limits.h>
 typedef void *Label;  typedef void *Label;
   /* symbol indexed constants */
   #define DOCOL   0
   #define DOCON   1
   #define DOVAR   2
   #define DOUSER  3
   #define DODEFER 4
   #define DOFIELD 5
   #define DODOES  6
   #define DOESJUMP        7
 #include "machine.h"  #include "machine.h"
 /* Forth data types */  /* Forth data types */
 typedef int Bool;  /* Cell and UCell must be the same size as a pointer */
   typedef CELL_TYPE Cell;
   typedef unsigned CELL_TYPE UCell;
   #define CELL_BITS       (sizeof(Cell) * CHAR_BIT)
   typedef Cell Bool;
 #define FLAG(b) (-(b))  #define FLAG(b) (-(b))
   #define FILEIO(error)   (FLAG(error) & -37)
   #define FILEEXIST(error)        (FLAG(error) & -38)
 #define F_TRUE (FLAG(0==0))  #define F_TRUE (FLAG(0==0))
 #define F_FALSE (FLAG(0!=0))  #define F_FALSE (FLAG(0!=0))
Line 20  typedef unsigned char Char; Line 54  typedef unsigned char Char;
 typedef double Float;  typedef double Float;
 typedef char *Address;  typedef char *Address;
   typedef struct {
     Cell hi;
     UCell lo;
   } DCell;
   typedef struct {
     UCell hi;
     UCell lo;
   } UDCell;
   #define FETCH_DCELL(d,lo,hi)    ((d)=(typeof(d)){(hi),(lo)})
   #define STORE_DCELL(d,low,high) ({ \
                                        typeof(d) _d = (d); \
                                        (low) = _d.lo; \
                                        (high)= _d.hi; \
   #define LONG2UD(l)      ({UDCell _ud; _ud.hi=0; _ud.lo=(Cell)(l); _ud;})
   #define UD2LONG(ud)     ((long)(ud.lo))
   #define DZERO           ((DCell){0,0})
   #else /* ! defined(BUGGY_LONG_LONG) */
   /* DCell and UDCell must be twice as large as Cell */
   typedef DOUBLE_CELL_TYPE DCell;
   typedef unsigned DOUBLE_CELL_TYPE UDCell;
   typedef union {
     struct {
       Cell high;
       UCell low;
       UCell low;
       Cell high;
     } cells;
     DCell dcell;
   } Double_Store;
   #define FETCH_DCELL(d,lo,hi)    ({ \
                                        Double_Store _d; \
                                        _d.cells.low = (lo); \
                                        _d.cells.high = (hi); \
                                        (d) = _d.dcell; \
   #define STORE_DCELL(d,lo,hi)    ({ \
                                        Double_Store _d; \
                                        _d.dcell = (d); \
                                        (lo) = _d.cells.low; \
                                        (hi) = _d.cells.high; \
   #define LONG2UD(l)      ((UDCell)(l))
   #define UD2LONG(ud)     ((long)(ud))
   #define DZERO           ((DCell)0)
   #endif /* ! defined(BUGGY_LONG_LONG) */
 typedef Label Xt;  typedef Label Xt;
 #else  #else
 typedef Label *Xt;  typedef Label *Xt;
 #endif  #endif
 Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp);  
 /* i.e. indirect threaded */  /* i.e. indirect threaded */
 /* the direct threaded version is machine dependent and resides in machine.h */  /* the direct threaded version is machine dependent and resides in machine.h */
Line 45  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 138  Label *engine(Xt *ip, Cell *sp, Cell *rp
    ca is the code address */     ca is the code address */
 #define MAKE_CF(cfa,ca) ((*(Label *)(cfa)) = ((Label)ca))  #define MAKE_CF(cfa,ca) ((*(Label *)(cfa)) = ((Label)ca))
 /* make a code field for a defining-word-defined word */  /* make a code field for a defining-word-defined word */
 #define MAKE_DOES_CF(cfa,does_code)     ({MAKE_CF(cfa,DODOES);  \  #define MAKE_DOES_CF(cfa,does_code)     ({MAKE_CF(cfa,symbols[DODOES]); \
                                           ((Cell *)cfa)[1] = (Cell)does_code;})                                            ((Cell *)cfa)[1] = (Cell)does_code;})
 /* the does handler resides between DOES> and the following Forth code */  /* the does handler resides between DOES> and the following Forth code */
 #define DOES_HANDLER_SIZE       8  #define DOES_HANDLER_SIZE       (2*sizeof(Cell))
 #define MAKE_DOES_HANDLER(addr) 0 /* do nothing */  #define MAKE_DOES_HANDLER(addr) 0 /* do nothing */
 #endif  #endif /* !defined(DIRECT_THREADED) */
 #ifdef DEBUG  #ifdef DEBUG
 #       define  NAME(string)    puts(string);  #       define  NAME(string)    fprintf(stderr,"%08lx: "string"\n",(Cell)ip);
 #else  #else
 #       define  NAME(string)  #       define  NAME(string)
 #endif  #endif
   #define CF(const)       (-const-2)
   #define CF_NIL  -1
   #ifndef FLUSH_ICACHE
   #warning flush-icache probably will not work (see manual)
   #       define FLUSH_ICACHE(addr,size)
   #define CACHE_FLUSH(addr,size) FLUSH_ICACHE(addr,size)
   #define CACHE_FLUSH(addr,size)
   Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
   /* dblsub routines */
   DCell dnegate(DCell d1);
   UDCell ummul (UCell a, UCell b);
   DCell mmul (Cell a, Cell b);
   UDCell umdiv (UDCell u, UCell v);
   DCell smdiv (DCell num, Cell denom);
   DCell fmdiv (DCell num, Cell denom);

Removed from v.1.1  
changed lines
  Added in v.1.21

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