Index: sys/amd64/include/cpufunc.h
===================================================================
--- sys/amd64/include/cpufunc.h
+++ sys/amd64/include/cpufunc.h
@@ -45,6 +45,8 @@
 #error this file needs sys/cdefs.h as a prerequisite
 #endif
 
+#include <machine/psl.h>
+
 struct region_descriptor;
 
 #define readb(va)	(*(volatile uint8_t *) (va))
@@ -836,6 +838,13 @@
 	write_rflags(rflags);
 }
 
+static __inline bool
+interrupts_enabled(void)
+{
+
+	return (read_rflags() & PSL_I);
+}
+
 static __inline void
 stac(void)
 {
Index: sys/i386/include/cpufunc.h
===================================================================
--- sys/i386/include/cpufunc.h
+++ sys/i386/include/cpufunc.h
@@ -44,6 +44,8 @@
 #error this file needs sys/cdefs.h as a prerequisite
 #endif
 
+#include <machine/psl.h>
+
 struct region_descriptor;
 
 #define readb(va)	(*(volatile uint8_t *) (va))
@@ -691,6 +693,13 @@
 	write_eflags(eflags);
 }
 
+static __inline bool
+interrupts_enabled(void)
+{
+
+	return (read_eflags() & PSL_I);
+}
+
 #else /* !(__GNUCLIKE_ASM && __CC_SUPPORTS___INLINE) */
 
 int	breakpoint(void);