--- gforth/Attic/386.h	1994/09/28 17:02:44	1.5
+++ gforth/Attic/386.h	1995/10/11 19:39:31	1.9
@@ -1,35 +1,24 @@
 /*
-  $Id: 386.h,v 1.5 1994/09/28 17:02:44 anton Exp $
   Copyright 1992 by the ANSI figForth Development Group
 
   This is the machine-specific part for Intel 386 compatible processors
 */
 
+#include "32bit.h"
 
-/* Cell and UCell must be the same size as a pointer */
-typedef long Cell;
-typedef unsigned long UCell;
-
-/* DCell and UDCell must be twice as large as Cell */
-typedef long long DCell;
-typedef unsigned long long UDCell;
-
-/* define this if IEEE singles and doubles are available as C data types */
-#define IEEE_FP
-
-/* the IEEE types are used only for loading and storing */
-/* the IEEE double precision type */
-typedef double DFloat;
-/* the IEEE single precision type */
-typedef float SFloat;
-
-/* define this if the least-significant byte is at the largets address */
-/* #define BIG_ENDIAN */
+/* indirect threading is faster on the 486, on the 386 direct
+   threading is probably faster. Therefore we leave defining
+   DIRECT_THREADED to configure */
 
 /* define this if the processor cannot exploit instruction-level
    parallelism (no pipelining or too few registers) */
 #define CISC_NEXT
 
+/* 386 and below have no cache, 486 has a shared cache, and the
+   Pentium probably employs hardware cache consistency, so
+   flush-icache is a noop */
+#define FLUSH_ICACHE(addr,size) 0
+
 #ifdef DIRECT_THREADED
 /* PFA gives the parameter field address corresponding to a cfa */
 #define PFA(cfa)	(((Cell *)cfa)+2)
@@ -59,6 +48,9 @@ typedef float SFloat;
 #endif
 
 #ifdef FORCE_REG
+#if (__GNUC__==2 && defined(__GNUC_MINOR__) && __GNUC_MINOR__==5)
+/* i.e. gcc-2.5.x */
+/* this works with 2.5.7; nothing works with 2.5.8 */
 #define IPREG asm("%esi")
 #define SPREG asm("%edi")
 #ifdef USE_TOS
@@ -66,6 +58,9 @@ typedef float SFloat;
 #else
 #define CFAREG asm("%edx")
 #endif
+#else /* gcc-version */
+/* this works with 2.6.3 (and quite well, too) */
+/* since this is not very demanding, it's the default for other gcc versions */
+#define SPREG asm("%ebx")
+#endif /* gcc-version */
 #endif /* FORCE_REG */
-
-#define rint(x)	floor((x)+0.5)