[gforth] / gforth / Attic / engine.c  

gforth: gforth/Attic/engine.c

Diff for /gforth/Attic/engine.c between version 1.5 and 1.6

version 1.5, Sat May 7 14:55:47 1994 UTC version 1.6, Wed May 18 17:29:52 1994 UTC
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 #include <assert.h>  #include <assert.h>
 #include <stdlib.h>  #include <stdlib.h>
 #include <time.h>  #include <time.h>
   #include <sys/time.h>
 #include "forth.h"  #include "forth.h"
 #include "io.h"  #include "io.h"
   
   #ifndef unlink
 extern unlink(char *);  extern unlink(char *);
   #endif
   #ifndef ftruncate
 extern ftruncate(int, int);  extern ftruncate(int, int);
   #endif
   
 typedef union {  typedef union {
   struct {    struct {
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 #define FTOS (fp[0])  #define FTOS (fp[0])
 #endif  #endif
   
 /*  
 #define CA_DODOES       (symbols[DODOES])  
 */  
   
 int emitcounter;  int emitcounter;
 #define NULLC '\0'  #define NULLC '\0'
   
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 static char* fileattr[6]={"r","rb","r+","r+b","w+","w+b"};  static char* fileattr[6]={"r","rb","r+","r+b","w+","w+b"};
   
   #if ~defined(select) && defined(DOS)
   /* select replacement for DOS computers for ms only */
   void select(int n, int a, int b, int c, struct timeval * timeout)
   {
      struct timeval time1;
      struct timeval time2;
      struct timezone zone1;
   
      gettimeofday(&time1,&zone1);
      time1.tv_sec += timeout->tv_sec;
      time1.tv_usec += timeout->tv_usec;
      while(time1.tv_usec >= 1000000)
        {
           time1.tv_usec -= 1000000;
           time1.tv_sec++;
        }
      do
        {
           gettimeofday(&time2,&zone1);
        }
      while(time2.tv_usec < time1.tv_usec || time2.tv_sec < time1.tv_sec);
   }
   #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)
 /* executes code at ip, if ip!=NULL  /* executes code at ip, if ip!=NULL
    returns array of machine code labels (for use in a loader), if ip==NULL     returns array of machine code labels (for use in a loader), if ip==NULL
    This is very preliminary, as the bootstrap architecture is not yet decided  
 */  */
 {  {
   Xt cfa;    Xt cfa;
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     &&dovar,      &&dovar,
     &&douser,      &&douser,
     &&dodoes,      &&dodoes,
     &&docol,  /* dummy for does handler address */      &&dodoes,  /* dummy for does handler address */
 #include "prim_labels.i"  #include "prim_labels.i"
   };    };
   IF_TOS(register Cell TOS;)    IF_TOS(register Cell TOS;)
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  docol:   docol:
 #ifdef DEBUG  #ifdef DEBUG
   printf("col: %x\n",(Cell)PFA1(cfa));    printf("%08x: col: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
 #endif  #endif
 #ifdef undefined  #ifdef undefined
   /* this is the simple version */    /* this is the simple version */
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  docon:   docon:
 #ifdef DEBUG  #ifdef DEBUG
   printf("con: %x\n",*(Cell*)PFA1(cfa));    printf("%08x: con: %08x\n",(Cell)ip,*(Cell*)PFA1(cfa));
 #endif  #endif
 #ifdef USE_TOS  #ifdef USE_TOS
   *sp-- = TOS;    *sp-- = TOS;
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  dovar:   dovar:
 #ifdef DEBUG  #ifdef DEBUG
   printf("var: %x\n",(Cell)PFA1(cfa));    printf("%08x: var: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
 #endif  #endif
 #ifdef USE_TOS  #ifdef USE_TOS
   *sp-- = TOS;    *sp-- = TOS;
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  douser:   douser:
 #ifdef DEBUG  #ifdef DEBUG
   printf("user: %x\n",(Cell)PFA1(cfa));    printf("%08x: user: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
 #endif  #endif
 #ifdef USE_TOS  #ifdef USE_TOS
   *sp-- = TOS;    *sp-- = TOS;
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      */       */
 #ifdef DEBUG  #ifdef DEBUG
   printf("does: %x\n",(Cell)PFA(cfa)); fflush(stdout);    printf("%08x/%08x: does: %08x\n",(Cell)ip,(Cell)cfa,*(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 */

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