Add the trap-trace function for the hypervisor.

sys/sun4v/include/hypervisorvar.h

@@ -37,6 +37,7 @@
 #define	CPU_STICK_NPT		0x82
 #define	MMU_MAP_ADDR		0x83
 #define	MMU_UNMAP_ADDR		0x84
+#define TTRACE_ADDENTRY         0x85
 
 /*
  * Error returns in %o0.

sys/sun4v/sun4v/hcall.S

@@ -1323,6 +1323,23 @@ hv_hpriv(void *func, uint64_t arg1, uint64_t arg2, uint64_t arg3)
 	stx	%o1, [%o2]
 	SET_SIZE(hv_ttrace_freeze)
 
+	/*
+	 * TTRACE_ADDENTRY
+	 * arg0 tag (16-bits) (%o0)
+	 * arg1 data word 0 (%o1)
+	 * arg2 data word 1 (%o2)
+	 * arg3 data word 2 (%o3)
+	 * arg4 data word 3 (%o4)
+	 * ret0 status (%o0)
+	*/
+	ENTRY(hv_ttrace_addentry)
+	ta	TTRACE_ADDENTRY
+	retl
+	  nop	
+	SET_SIZE(hv_ttrace_addentry)
+
+
+	
 	/*
 	 * MACH_DESC
 	 * arg0 buffer real address