Diff for /gforth/Attic/forth.h between versions 1.4 and 1.28

version 1.4, 1994/05/07 14:55:51 version 1.28, 1997/03/04 17:49:48
Line 1 Line 1
 /*  /* common header file
   $Id$  
   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
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     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"
   
   #if defined(DOUBLY_INDIRECT)
   #  undef DIRECT_THREADED
   #  define INDIRECT_THREADED
   #endif
   
   #include <limits.h>
   
   #if defined(NeXT)
   #  include <libc.h>
   #endif /* NeXT */
   
   #if defined(DOUBLY_INDIRECT)
   typedef void **Label;
   #else /* !defined(DOUBLY_INDIRECT) */
 typedef void *Label;  typedef void *Label;
   #endif /* !defined(DOUBLY_INDIRECT) */
   
 /* symbol indexed constants */  /* symbol indexed constants */
   
Line 13  typedef void *Label; Line 44  typedef void *Label;
 #define DOCON   1  #define DOCON   1
 #define DOVAR   2  #define DOVAR   2
 #define DOUSER  3  #define DOUSER  3
 #define DODOES  4  #define DODEFER 4
 #define DOESJUMP        5  #define DOFIELD 5
   #define DODOES  6
   #define DOESJUMP        7
   
   /* the size of the DOESJUMP, which resides between DOES> and the does-code */
   #define DOES_HANDLER_SIZE       (2*sizeof(Cell))
   
 #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 29  typedef unsigned char Char; Line 71  typedef unsigned char Char;
 typedef double Float;  typedef double Float;
 typedef char *Address;  typedef char *Address;
   
   #ifdef BUGGY_LONG_LONG
   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 {
   #ifdef WORDS_BIGENDIAN
       Cell high;
       UCell low;
   #else
       UCell low;
       Cell high;
   #endif;
     } 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) */
   
 #ifdef DIRECT_THREADED  #ifdef DIRECT_THREADED
 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, Address lp);  
   
 #ifndef DIRECT_THREADED  #if !defined(DIRECT_THREADED)
 /* i.e. indirect threaded */  /* i.e. indirect threaded our doubly 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 */
   
 /* PFA gives the parameter field address corresponding to a cfa */  /* PFA gives the parameter field address corresponding to a cfa */
Line 46  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 148  Label *engine(Xt *ip, Cell *sp, Cell *rp
 /* PFA1 is a special version for use just after a NEXT1 */  /* PFA1 is a special version for use just after a NEXT1 */
 #define PFA1(cfa)       PFA(cfa)  #define PFA1(cfa)       PFA(cfa)
 /* CODE_ADDRESS is the address of the code jumped to through the code field */  /* CODE_ADDRESS is the address of the code jumped to through the code field */
 #define CODE_ADDRESS(cfa)       (*(Label *)(cfa))  #define CODE_ADDRESS(cfa)       (*(Xt)(cfa))
       /* DOES_CODE is the Forth code does jumps to */  
 #define DOES_CODE(cfa)           (cfa[1])  /* DOES_CODE is the Forth code does jumps to */
 #define DOES_CODE1(cfa)          DOES_CODE(cfa)  #if !defined(DOUBLY_INDIRECT)
   #  define DOES_CA (symbols[DODOES])
   #else /* defined(DOUBLY_INDIRECT) */
   #  define DOES_CA ((Label)&symbols[DODOES])
   #endif /* defined(DOUBLY_INDIRECT) */
   
   
   
   #define DOES_CODE(cfa)  ({Xt _cfa=(Xt)(cfa); \
                             (Xt *)(_cfa[0]==DOES_CA ? _cfa[1] : NULL);})
   #define DOES_CODE1(cfa) ((Xt *)(cfa[1]))
 /* MAKE_CF creates an appropriate code field at the cfa;  /* MAKE_CF creates an appropriate code field at the cfa;
    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,symbols[DODOES]); \  #define MAKE_DOES_CF(cfa,does_code)  ({MAKE_CF(cfa,DOES_CA);    \
                                           ((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  /* not needed in indirect threaded code */
 #define MAKE_DOES_HANDLER(addr) 0 /* do nothing */  #if defined(DOUBLY_INDIRECT)
 #endif  #define MAKE_DOES_HANDLER(addr) MAKE_CF(addr, ((Label)&symbols[DOESJUMP]))
   #else /* !defined(DOUBLY_INDIRECT) */
   #define MAKE_DOES_HANDLER(addr) 0
   #endif /* !defined(DOUBLY_INDIRECT) */
   #endif /* !defined(DIRECT_THREADED) */
   
 #ifdef DEBUG  #ifdef DEBUG
 #       define  NAME(string)    printf("%08x: %s\n",(int)ip,string);  #       define  NAME(string)    fprintf(stderr,"%08lx: "string"\n",(Cell)ip);
 #else  #else
 #       define  NAME(string)  #       define  NAME(string)
 #endif  #endif
Line 71  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 187  Label *engine(Xt *ip, Cell *sp, Cell *rp
   
 #define CF_NIL  -1  #define CF_NIL  -1
   
 #ifndef CACHE_FLUSH  #ifndef FLUSH_ICACHE
 #       define CACHE_FLUSH(addr,size)  #warning flush-icache probably will not work (see manual)
   #       define FLUSH_ICACHE(addr,size)
   #endif
   
   #if defined(DIRECT_THREADED)
   #define CACHE_FLUSH(addr,size) FLUSH_ICACHE(addr,size)
   #else
   #define CACHE_FLUSH(addr,size)
   #endif
   
   #ifdef USE_TOS
   #define IF_TOS(x) x
   #else
   #define IF_TOS(x)
   #define TOS (sp[0])
   #endif
   
   #ifdef USE_FTOS
   #define IF_FTOS(x) x
   #else
   #define IF_FTOS(x)
   #define FTOS (fp[0])
 #endif  #endif
   
   Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
   Address my_alloc(Cell size);
   
   /* 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);
   
   int memcasecmp(const char *s1, const char *s2, long n);
   
   extern int offset_image;

Removed from v.1.4  
changed lines
  Added in v.1.28


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