[BACK]Return to engine.c CVS log [TXT] [DIR] Up to [gforth] / gforth

Diff for /gforth/Attic/engine.c between versions 1.1 and 1.4

version 1.1, 1994/02/11 16:30:46 version 1.4, 1994/05/05 15:46:42
Line 12 Line 12
 #include <fcntl.h>  #include <fcntl.h>
 #include <assert.h>  #include <assert.h>
 #include <stdlib.h>  #include <stdlib.h>
   #include <time.h>
 #include "forth.h"  #include "forth.h"
 #include "io.h"  #include "io.h"
   
Line 44  typedef struct F83Name { Line 45  typedef struct F83Name {
   
 /* NEXT and NEXT1 are split into several parts to help scheduling */  /* NEXT and NEXT1 are split into several parts to help scheduling */
 #ifdef DIRECT_THREADED  #ifdef DIRECT_THREADED
 #define NEXT1_P1   #       define NEXT1_P1 
 #define NEXT1_P2 ({goto *cfa;})  #       define NEXT1_P2 ({goto *cfa;})
 #else  #       define DEF_CA
 #define NEXT1_P1 ({ca = *cfa;})  #else
 #define NEXT1_P2 ({goto *ca;})  #       define NEXT1_P1 ({ca = *cfa;})
   #       define NEXT1_P2 ({goto *ca;})
   #       define DEF_CA   Label ca;
 #endif  #endif
 #define NEXT_P1 ({cfa = *ip++; NEXT1_P1;})  #define NEXT_P1 ({cfa = *ip++; NEXT1_P1;})
   
 #define NEXT1 ({NEXT1_P1; NEXT1_P2;})  #define NEXT1 ({DEF_CA NEXT1_P1; NEXT1_P2;})
 #define NEXT ({NEXT_P1; NEXT1_P2;})  #define NEXT ({DEF_CA NEXT_P1; NEXT1_P2;})
   
 #ifdef USE_TOS  #ifdef USE_TOS
 #define IF_TOS(x) x  #define IF_TOS(x) x
Line 69  typedef struct F83Name { Line 72  typedef struct F83Name {
 #define FTOS (fp[0])  #define FTOS (fp[0])
 #endif  #endif
   
 #define DODOES  (symbols[3])  /*
   #define CA_DODOES       (symbols[DODOES])
   */
   
 int emitcounter;  int emitcounter;
 #define NULLC '\0'  #define NULLC '\0'
   
 #define cstr(to, from, size)\  #define cstr(to,from,size)\
         {       memcpy(to, from, size);\          {       memcpy(to,from,size);\
                 to[size]=NULLC;}                  to[size]=NULLC;}
 #define NEWLINE '\n'  #define NEWLINE '\n'
   
Line 89  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 94  Label *engine(Xt *ip, Cell *sp, Cell *rp
 {  {
   Xt cfa;    Xt cfa;
   Address lp=NULL;    Address lp=NULL;
     Address up=NULL;
   static Label symbols[]= {    static Label symbols[]= {
     &&docol,      &&docol,
     &&docon,      &&docon,
     &&dovar,      &&dovar,
       &&douser,
     &&dodoes,      &&dodoes,
       &&docol,  /* dummy for does handler address */
 #include "prim_labels.i"  #include "prim_labels.i"
   };    };
 #ifndef DIRECT_THREADED  
   Label ca;  
 #endif  
   IF_TOS(register Cell TOS;)    IF_TOS(register Cell TOS;)
   IF_FTOS(Float FTOS;)    IF_FTOS(Float FTOS;)
 #ifdef CPU_DEP  #ifdef CPU_DEP
Line 128  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 133  Label *engine(Xt *ip, Cell *sp, Cell *rp
      problems with code fields employing calls and delay slots       problems with code fields employing calls and delay slots
   */    */
   {    {
       DEF_CA
     Xt *current_ip = (Xt *)PFA1(cfa);      Xt *current_ip = (Xt *)PFA1(cfa);
     cfa = *current_ip;      cfa = *current_ip;
     NEXT1_P1;      NEXT1_P1;
     *--rp = (Cell)ip;      *--rp = (Cell)ip;
     ip = current_ip+1;      ip = current_ip+1;
       NEXT1_P2;
   }    }
   NEXT1_P2;  
       
  docon:   docon:
 #ifdef DEBUG  #ifdef DEBUG
Line 162  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 168  Label *engine(Xt *ip, Cell *sp, Cell *rp
       
   /* !! user? */    /* !! user? */
       
    douser:
   #ifdef DEBUG
     printf("user: %x\n",(Cell)PFA1(cfa));
   #endif
   #ifdef USE_TOS
     *sp-- = TOS;
     TOS = up+*(Cell*)PFA1(cfa);
   #else
     *--sp = up+*(Cell*)PFA1(cfa);
   #endif
     NEXT;
     
  dodoes:   dodoes:
   /* this assumes the following structure:    /* this assumes the following structure:
      defining-word:       defining-word:
Line 181  Label *engine(Xt *ip, Cell *sp, Cell *rp Line 199  Label *engine(Xt *ip, Cell *sp, Cell *rp
             
      */       */
 #ifdef DEBUG  #ifdef DEBUG
   printf("does: %x\n",(Cell)PFA(cfa));    printf("does: %x\n",(Cell)PFA(cfa)); fflush(stdout);
 #endif  #endif
   *--rp = (Cell)ip;    *--rp = (Cell)ip;
   /* PFA1 might collide with DOES_CODE1 here, so we use PFA */    /* PFA1 might collide with DOES_CODE1 here, so we use PFA */
Removed from v.1.1  
changed lines
  Added in v.1.4

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>