--- gforth/Attic/engine.c	1994/02/11 16:30:46	1.1
+++ gforth/Attic/engine.c	1994/05/18 17:29:52	1.6
@@ -1,5 +1,5 @@
 /*
-  $Id: engine.c,v 1.1 1994/02/11 16:30:46 anton Exp $
+  $Id: engine.c,v 1.6 1994/05/18 17:29:52 pazsan Exp $
   Copyright 1992 by the ANSI figForth Development Group
 */
 
@@ -12,11 +12,17 @@
 #include <fcntl.h>
 #include <assert.h>
 #include <stdlib.h>
+#include <time.h>
+#include <sys/time.h>
 #include "forth.h"
 #include "io.h"
 
-extern unlink(char *);
-extern ftruncate(int, int);
+#ifndef unlink
+	extern unlink(char *);
+#endif
+#ifndef ftruncate
+	extern ftruncate(int, int);
+#endif
 
 typedef union {
   struct {
@@ -44,16 +50,18 @@ typedef struct F83Name {
 
 /* NEXT and NEXT1 are split into several parts to help scheduling */
 #ifdef DIRECT_THREADED
-#define NEXT1_P1 
-#define NEXT1_P2 ({goto *cfa;})
-#else
-#define NEXT1_P1 ({ca = *cfa;})
-#define NEXT1_P2 ({goto *ca;})
+#	define NEXT1_P1 
+#	define NEXT1_P2 ({goto *cfa;})
+#	define DEF_CA
+#else
+#	define NEXT1_P1 ({ca = *cfa;})
+#	define NEXT1_P2 ({goto *ca;})
+#	define DEF_CA	Label ca;
 #endif
 #define NEXT_P1 ({cfa = *ip++; NEXT1_P1;})
 
-#define NEXT1 ({NEXT1_P1; NEXT1_P2;})
-#define NEXT ({NEXT_P1; NEXT1_P2;})
+#define NEXT1 ({DEF_CA NEXT1_P1; NEXT1_P2;})
+#define NEXT ({DEF_CA NEXT_P1; NEXT1_P2;})
 
 #ifdef USE_TOS
 #define IF_TOS(x) x
@@ -69,36 +77,56 @@ typedef struct F83Name {
 #define FTOS (fp[0])
 #endif
 
-#define DODOES	(symbols[3])
-
 int emitcounter;
 #define NULLC '\0'
 
-#define cstr(to, from, size)\
-	{	memcpy(to, from, size);\
+#define cstr(to,from,size)\
+	{	memcpy(to,from,size);\
 		to[size]=NULLC;}
 #define NEWLINE	'\n'
 
 static char* fileattr[6]={"r","rb","r+","r+b","w+","w+b"};
 
-Label *engine(Xt *ip, Cell *sp, Cell *rp, Float *fp)
+#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)
 /* executes code at ip, 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;
-  Address lp=NULL;
+  Address up=NULL;
   static Label symbols[]= {
     &&docol,
     &&docon,
     &&dovar,
+    &&douser,
     &&dodoes,
+    &&dodoes,  /* dummy for does handler address */
 #include "prim_labels.i"
   };
-#ifndef DIRECT_THREADED
-  Label ca;
-#endif
   IF_TOS(register Cell TOS;)
   IF_FTOS(Float FTOS;)
 #ifdef CPU_DEP
@@ -115,7 +143,7 @@ Label *engine(Xt *ip, Cell *sp, Cell *rp
   
  docol:
 #ifdef DEBUG
-  printf("col: %x\n",(Cell)PFA1(cfa));
+  printf("%08x: col: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
 #endif
 #ifdef undefined
   /* this is the simple version */
@@ -128,17 +156,18 @@ Label *engine(Xt *ip, Cell *sp, Cell *rp
      problems with code fields employing calls and delay slots
   */
   {
+    DEF_CA
     Xt *current_ip = (Xt *)PFA1(cfa);
     cfa = *current_ip;
     NEXT1_P1;
     *--rp = (Cell)ip;
     ip = current_ip+1;
+    NEXT1_P2;
   }
-  NEXT1_P2;
   
  docon:
 #ifdef DEBUG
-  printf("con: %x\n",*(Cell*)PFA1(cfa));
+  printf("%08x: con: %08x\n",(Cell)ip,*(Cell*)PFA1(cfa));
 #endif
 #ifdef USE_TOS
   *sp-- = TOS;
@@ -150,7 +179,7 @@ Label *engine(Xt *ip, Cell *sp, Cell *rp
   
  dovar:
 #ifdef DEBUG
-  printf("var: %x\n",(Cell)PFA1(cfa));
+  printf("%08x: var: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
 #endif
 #ifdef USE_TOS
   *sp-- = TOS;
@@ -162,6 +191,18 @@ Label *engine(Xt *ip, Cell *sp, Cell *rp
   
   /* !! user? */
   
+ douser:
+#ifdef DEBUG
+  printf("%08x: user: %08x\n",(Cell)ip,(Cell)PFA1(cfa));
+#endif
+#ifdef USE_TOS
+  *sp-- = TOS;
+  TOS = (Cell)(up+*(Cell*)PFA1(cfa));
+#else
+  *--sp = (Cell)(up+*(Cell*)PFA1(cfa));
+#endif
+  NEXT;
+  
  dodoes:
   /* this assumes the following structure:
      defining-word:
@@ -181,7 +222,8 @@ Label *engine(Xt *ip, Cell *sp, Cell *rp
      
      */
 #ifdef DEBUG
-  printf("does: %x\n",(Cell)PFA(cfa));
+  printf("%08x/%08x: does: %08x\n",(Cell)ip,(Cell)cfa,*(Cell)PFA(cfa));
+  fflush(stdout);
 #endif
   *--rp = (Cell)ip;
   /* PFA1 might collide with DOES_CODE1 here, so we use PFA */