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Diff for /gforth/Attic/engine.c between versions 1.17 and 1.29

version 1.17, 1994/09/28 17:02:46 version 1.29, 1995/10/07 17:38:12
Line 1 Line 1
 /*  /*
   $Id$  
   Copyright 1992 by the ANSI figForth Development Group    Copyright 1992 by the ANSI figForth Development Group
 */  */
   
Line 14 Line 13
 #include <stdlib.h>  #include <stdlib.h>
 #include <time.h>  #include <time.h>
 #include <sys/time.h>  #include <sys/time.h>
   #include <unistd.h>
   #include <errno.h>
   #include <pwd.h>
 #include "forth.h"  #include "forth.h"
 #include "io.h"  #include "io.h"
   
   #ifndef SEEK_SET
   /* should be defined in stdio.h, but some systems don't have it */
   #define SEEK_SET 0
   #endif
   
   #define IOR(flag)       ((flag)? -512-errno : 0)
   
 typedef union {  typedef union {
   struct {    struct {
 #ifdef BIG_ENDIAN  #ifdef WORDS_BIGENDIAN
     Cell high;      Cell high;
     Cell low;      Cell low;
 #else  #else
Line 41  typedef struct F83Name { Line 50  typedef struct F83Name {
 #define F83NAME_SMUDGE(np)      (((np)->countetc & 0x40) != 0)  #define F83NAME_SMUDGE(np)      (((np)->countetc & 0x40) != 0)
 #define F83NAME_IMMEDIATE(np)   (((np)->countetc & 0x20) != 0)  #define F83NAME_IMMEDIATE(np)   (((np)->countetc & 0x20) != 0)
   
   /* !!someone should organize this ifdef chaos */
   #if defined(LONG_LATENCY)
   #if defined(AUTO_INCREMENT)
   #define NEXT_P0         (cfa=*ip++)
   #define IP              (ip-1)
   #else /* AUTO_INCREMENT */
   #define NEXT_P0         (cfa=*ip)
   #define IP              ip
   #endif /* AUTO_INCREMENT */
   #define NEXT_INST       (cfa)
   #define INC_IP(const_inc)       ({cfa=IP[const_inc]; ip+=(const_inc);})
   #else /* LONG_LATENCY */
 /* NEXT and NEXT1 are split into several parts to help scheduling,  /* NEXT and NEXT1 are split into several parts to help scheduling,
    unless CISC_NEXT is defined */     unless CISC_NEXT is defined */
 #ifdef CISC_NEXT  #define NEXT_P0
   /* in order for execute to work correctly, NEXT_P0 (or other early
      fetches) should not update the ip (or should we put
      compensation-code into execute? */
   #define NEXT_INST       (*ip)
   /* the next instruction (or what is in its place, e.g., an immediate
      argument */
   #define INC_IP(const_inc)       (ip+=(const_inc))
   /* increment the ip by const_inc and perform NEXT_P0 (or prefetching) again */
   #define IP              ip
   /* the pointer to the next instruction (i.e., NEXT_INST could be
      defined as *IP) */
   #endif /* LONG_LATENCY */
   
   #if defined(CISC_NEXT) && !defined(LONG_LATENCY)
 #define NEXT1_P1  #define NEXT1_P1
 #define NEXT_P1  #define NEXT_P1
 #define DEF_CA  #define DEF_CA
Line 53  typedef struct F83Name { Line 88  typedef struct F83Name {
 #define NEXT1_P2 ({goto **cfa;})  #define NEXT1_P2 ({goto **cfa;})
 #endif /* DIRECT_THREADED */  #endif /* DIRECT_THREADED */
 #define NEXT_P2 ({cfa = *ip++; NEXT1_P2;})  #define NEXT_P2 ({cfa = *ip++; NEXT1_P2;})
 #else /* CISC_NEXT */  #else /* defined(CISC_NEXT) && !defined(LONG_LATENCY) */
 #ifdef DIRECT_THREADED  #ifdef DIRECT_THREADED
 #define NEXT1_P1  #define NEXT1_P1
 #define NEXT1_P2 ({goto *cfa;})  #define NEXT1_P2 ({goto *cfa;})
Line 63  typedef struct F83Name { Line 98  typedef struct F83Name {
 #define NEXT1_P2 ({goto *ca;})  #define NEXT1_P2 ({goto *ca;})
 #define DEF_CA  Label ca;  #define DEF_CA  Label ca;
 #endif /* DIRECT_THREADED */  #endif /* DIRECT_THREADED */
   #if defined(LONG_LATENCY)
   #if defined(AUTO_INCREMENT)
   #define NEXT_P1 NEXT1_P1
   #else /* AUTO_INCREMENT */
   #define NEXT_P1 ({ip++; NEXT1_P1;})
   #endif /* AUTO_INCREMENT */
   #else /* LONG_LATENCY */
 #define NEXT_P1 ({cfa=*ip++; NEXT1_P1;})  #define NEXT_P1 ({cfa=*ip++; NEXT1_P1;})
   #endif /* LONG_LATENCY */
 #define NEXT_P2 NEXT1_P2  #define NEXT_P2 NEXT1_P2
 #endif /* CISC_NEXT */  #endif /* defined(CISC_NEXT) && !defined(LONG_LATENCY) */
   
 #define NEXT1 ({DEF_CA NEXT1_P1; NEXT1_P2;})  #define NEXT1 ({DEF_CA NEXT1_P1; NEXT1_P2;})
 #define NEXT ({DEF_CA NEXT_P1; NEXT_P2;})  #define NEXT ({DEF_CA NEXT_P1; NEXT_P2;})
Line 84  typedef struct F83Name { Line 127  typedef struct F83Name {
 #define FTOS (fp[0])  #define FTOS (fp[0])
 #endif  #endif
   
   Cell *SP;
   Float *FP;
 int emitcounter;  int emitcounter;
 #define NULLC '\0'  #define NULLC '\0'
   
Line 116  char *cstr(Char *from, UCell size, int c Line 161  char *cstr(Char *from, UCell size, int c
   return oldnextscratch;    return oldnextscratch;
 }  }
   
   char *tilde_cstr(Char *from, UCell size, int clear)
   /* like cstr(), but perform tilde expansion on the string */
   {
     char *s1,*s2;
     int s1_len, s2_len;
     struct passwd *getpwnam (), *user_entry;
   
     if (size<1 || from[0]!='~')
       return cstr(from, size, clear);
     if (size<2 || from[1]=='/') {
       s1 = (char *)getenv ("HOME");
       s2 = from+1;
       s2_len = size-1;
     } else {
       int i;
       for (i=1; i<size && from[i]!='/'; i++)
         ;
       {
         char user[i];
         memcpy(user,from+1,i-1);
         user[i-1]='\0';
         user_entry=getpwnam(user);
       }
       if (user_entry==NULL)
         return cstr(from, size, clear);
       s1 = user_entry->pw_dir;
       s2 = from+i;
       s2_len = size-i;
     }
     s1_len = strlen(s1);
     if (s1_len>1 && s1[s1_len-1]=='/')
       s1_len--;
     {
       char path[s1_len+s2_len];
       memcpy(path,s1,s1_len);
       memcpy(path+s1_len,s2,s2_len);
       return cstr(path,s1_len+s2_len,clear);
     }
   }
      
   
 #define NEWLINE '\n'  #define NEWLINE '\n'
   
   #ifndef HAVE_RINT
   #define rint(x) floor((x)+0.5)
   #endif
   
 static char* fileattr[6]={"r","rb","r+","r+b","w+","w+b"};  static char* fileattr[6]={"r","rb","r+","r+b","w","wb"};
   
 static Address up0=NULL;  static Address up0=NULL;
   
Line 172  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 261  Label *engine(Xt *ip0, Cell *sp0, Cell *
     &&dovar,      &&dovar,
     &&douser,      &&douser,
     &&dodefer,      &&dodefer,
       &&dofield,
     &&dodoes,      &&dodoes,
     &&dodoes,  /* dummy for does handler address */      &&dodoes,  /* dummy for does handler address */
 #include "prim_labels.i"  #include "prim_labels.i"
Line 182  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 272  Label *engine(Xt *ip0, Cell *sp0, Cell *
   
 #ifdef DEBUG  #ifdef DEBUG
   fprintf(stderr,"ip=%x, sp=%x, rp=%x, fp=%x, lp=%x, up=%x\n",    fprintf(stderr,"ip=%x, sp=%x, rp=%x, fp=%x, lp=%x, up=%x\n",
           ip,sp,rp,fp,lp,up);            (unsigned)ip,(unsigned)sp,(unsigned)rp,
             (unsigned)fp,(unsigned)lp,(unsigned)up);
 #endif  #endif
   
   if (ip == NULL)    if (ip == NULL)
Line 190  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 281  Label *engine(Xt *ip0, Cell *sp0, Cell *
   
   IF_TOS(TOS = sp[0]);    IF_TOS(TOS = sp[0]);
   IF_FTOS(FTOS = fp[0]);    IF_FTOS(FTOS = fp[0]);
   prep_terminal();  /*  prep_terminal(); */
     NEXT_P0;
   NEXT;    NEXT;
       
  docol:   docol:
Line 201  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 293  Label *engine(Xt *ip0, Cell *sp0, Cell *
   /* this is the simple version */    /* this is the simple version */
   *--rp = (Cell)ip;    *--rp = (Cell)ip;
   ip = (Xt *)PFA1(cfa);    ip = (Xt *)PFA1(cfa);
     NEXT_P0;
   NEXT;    NEXT;
 #else  #else
   /* this one is important, so we help the compiler optimizing    /* this one is important, so we help the compiler optimizing
Line 217  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 310  Label *engine(Xt *ip0, Cell *sp0, Cell *
     NEXT1_P2;      NEXT1_P2;
   }    }
 #endif  #endif
     
  docon:   docon:
 #ifdef DEBUG  #ifdef DEBUG
   fprintf(stderr,"%08x: con: %08x\n",(Cell)ip,*(Cell*)PFA1(cfa));    fprintf(stderr,"%08x: con: %08x\n",(Cell)ip,*(Cell*)PFA1(cfa));
Line 228  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 321  Label *engine(Xt *ip0, Cell *sp0, Cell *
 #else  #else
   *--sp = *(Cell *)PFA1(cfa);    *--sp = *(Cell *)PFA1(cfa);
 #endif  #endif
     NEXT_P0;
   NEXT;    NEXT;
       
  dovar:   dovar:
Line 240  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 334  Label *engine(Xt *ip0, Cell *sp0, Cell *
 #else  #else
   *--sp = (Cell)PFA1(cfa);    *--sp = (Cell)PFA1(cfa);
 #endif  #endif
     NEXT_P0;
   NEXT;    NEXT;
       
   /* !! user? */  
     
  douser:   douser:
 #ifdef DEBUG  #ifdef DEBUG
   fprintf(stderr,"%08x: user: %08x\n",(Cell)ip,(Cell)PFA1(cfa));    fprintf(stderr,"%08x: user: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
Line 254  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 347  Label *engine(Xt *ip0, Cell *sp0, Cell *
 #else  #else
   *--sp = (Cell)(up+*(Cell*)PFA1(cfa));    *--sp = (Cell)(up+*(Cell*)PFA1(cfa));
 #endif  #endif
     NEXT_P0;
   NEXT;    NEXT;
       
  dodefer:   dodefer:
Line 263  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 357  Label *engine(Xt *ip0, Cell *sp0, Cell *
   cfa = *(Xt *)PFA1(cfa);    cfa = *(Xt *)PFA1(cfa);
   NEXT1;    NEXT1;
   
    dofield:
   #ifdef DEBUG
     fprintf(stderr,"%08x: field: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
   #endif
     TOS += *(Cell*)PFA1(cfa); 
     NEXT_P0;
     NEXT;
   
  dodoes:   dodoes:
   /* this assumes the following structure:    /* this assumes the following structure:
      defining-word:       defining-word:
Line 294  Label *engine(Xt *ip0, Cell *sp0, Cell * Line 396  Label *engine(Xt *ip0, Cell *sp0, Cell *
 #else  #else
   *--sp = (Cell)PFA(cfa);    *--sp = (Cell)PFA(cfa);
 #endif  #endif
     NEXT_P0;
   NEXT;    NEXT;
   
 #include "primitives.i"  #include "primitives.i"
Removed from v.1.17  
changed lines
  Added in v.1.29

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