3 files changed, 27 insertions(+), 3 deletions(-)

M pc/l.s
M pc/trap.c
M port/sysfile.c

@@ 511,13 511,37 @@ TEXT setlabel(SB), $0
  * The size of each entry in the vector table (6 bytes) is known in trapinit().
  */
 TEXT _strayintr(SB), $0
+
+	/* time stamp for interrupt */
 	PUSHL	AX				/* save AX */
+	PUSHL	DX
+	PUSHL	CX
+	MOVL	$0x10, CX
+	RDMSR
+	MOVL	AX, intrts(SB)
+	MOVL	DX, intrts+4(SB)
+	POPL	CX
+	POPL	DX
+
 	MOVL	4(SP), AX			/* return PC from vectortable(SB) */
 	MOVBLZX	(AX), AX			/* trap type */
 	XCHGL	AX, (SP)			/* restore AX and put the type on the stack */
 	JMP	intrcommon
 
 TEXT _strayintrx(SB), $0
+
+	/* time stamp for interrupt */
+	PUSHL	AX
+	PUSHL	DX
+	PUSHL	CX
+	MOVL	$0x10, CX
+	RDMSR
+	MOVL	AX, intrts(SB)
+	MOVL	DX, intrts+4(SB)
+	POPL	CX
+	POPL	DX
+	POPL	AX
+
 	XCHGL	AX, (SP)			/* exchange AX with pointer to trap type */
 	MOVBLZX	(AX), AX			/* trap type -> AX */
 	XCHGL	AX, (SP)			/* exchange trap type with AX */

@@ 15,6 15,8 @@ static void fault386(Ureg*, void*);
 static Lock vctllock;
 static Vctl *vctl[256];
 
+uvlong	intrts;
+
 void
 intrenable(int irq, void (*f)(Ureg*, void*), void* a, int tbdf)
 {

@@ 109,9 109,7 @@ sysfd2path(ulong *arg)
 {
 	Chan *c, *oc;
 
-	validaddr(arg[1], 1, 0);
-	if(vmemchr((char*)arg[1], '\0', arg[2]) == 0)
-		error(Ebadarg);
+	validaddr(arg[1], arg[2], 1);
 
 	/*
 	 * Undomount below may cclose the chan so bump the