[gforth] / gforth / Attic / forth.h  

gforth: gforth/Attic/forth.h

Diff for /gforth/Attic/forth.h between version 1.27 and 1.28

version 1.27, Sat Dec 28 17:19:24 1996 UTC version 1.28, Tue Mar 4 17:49:48 1997 UTC
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 */  */
   
 #include "config.h"  #include "config.h"
   
   #if defined(DOUBLY_INDIRECT)
   #  undef DIRECT_THREADED
   #  define INDIRECT_THREADED
   #endif
   
 #include <limits.h>  #include <limits.h>
   
 #if defined(NeXT)  #if defined(NeXT)
 #  include <libc.h>  #  include <libc.h>
 #endif /* NeXT */  #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 */
   
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 #define DODOES  6  #define DODOES  6
 #define DOESJUMP        7  #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 */
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 typedef Label *Xt;  typedef Label *Xt;
 #endif  #endif
   
 #ifndef DIRECT_THREADED  
 /* i.e. indirect threaded */  #if !defined(DIRECT_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 */
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 /* 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 */  /* DOES_CODE is the Forth code does jumps to */
   #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); \  #define DOES_CODE(cfa)  ({Xt _cfa=(Xt)(cfa); \
                           _cfa[0] == symbols[DODOES] ? _cfa[1] : NULL;})                            (Xt *)(_cfa[0]==DOES_CA ? _cfa[1] : NULL);})
 #define DOES_CODE1(cfa) (cfa[1])  #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       (2*sizeof(Cell))  /* not needed in indirect threaded code */
 #define MAKE_DOES_HANDLER(addr) 0 /* do nothing */  #if defined(DOUBLY_INDIRECT)
   #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) */  #endif /* !defined(DIRECT_THREADED) */
   
 #ifdef DEBUG  #ifdef DEBUG
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 #       define FLUSH_ICACHE(addr,size)  #       define FLUSH_ICACHE(addr,size)
 #endif  #endif
   
 #ifdef DIRECT_THREADED  #if defined(DIRECT_THREADED)
 #define CACHE_FLUSH(addr,size) FLUSH_ICACHE(addr,size)  #define CACHE_FLUSH(addr,size) FLUSH_ICACHE(addr,size)
 #else  #else
 #define CACHE_FLUSH(addr,size)  #define CACHE_FLUSH(addr,size)
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 #endif  #endif
   
 Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);  Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp, Address lp);
   Address my_alloc(Cell size);
   
 /* dblsub routines */  /* dblsub routines */
 DCell dnegate(DCell d1);  DCell dnegate(DCell d1);
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 int memcasecmp(const char *s1, const char *s2, long n);  int memcasecmp(const char *s1, const char *s2, long n);
   
   extern int offset_image;

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