diff --git a/sys/arm/include/intr.h b/sys/arm/include/intr.h
--- a/sys/arm/include/intr.h
+++ b/sys/arm/include/intr.h
@@ -39,14 +39,16 @@
 #ifndef _MACHINE_INTR_H_
 #define _MACHINE_INTR_H_
 
+#if !defined(__ASSEMBLER__)
 #ifdef FDT
 #include <dev/ofw/openfirm.h>
 #endif
 
+void arm_irq_memory_barrier(uintptr_t);
+#endif
+
 #ifndef NIRQ
 #define	NIRQ		1024	/* XXX - It should be an option. */
 #endif
 
-void arm_irq_memory_barrier(uintptr_t);
-
 #endif	/* _MACHINE_INTR_H */
diff --git a/sys/arm64/include/intr.h b/sys/arm64/include/intr.h
--- a/sys/arm64/include/intr.h
+++ b/sys/arm64/include/intr.h
@@ -27,18 +27,20 @@
 #ifndef _MACHINE_INTR_H_
 #define	_MACHINE_INTR_H_
 
+#if !defined(__ASSEMBLER__)
 #ifdef FDT
 #include <dev/ofw/openfirm.h>
 #endif
 
-#ifndef NIRQ
-#define	NIRQ		16384	/* XXX - It should be an option. */
-#endif
-
 static inline void
 arm_irq_memory_barrier(uintptr_t irq)
 {
 }
+#endif
+
+#ifndef NIRQ
+#define	NIRQ		16384	/* XXX - It should be an option. */
+#endif
 
 #ifdef DEV_ACPI
 #define	ACPI_INTR_XREF	1
diff --git a/sys/riscv/include/intr.h b/sys/riscv/include/intr.h
--- a/sys/riscv/include/intr.h
+++ b/sys/riscv/include/intr.h
@@ -39,6 +39,7 @@
 #define	NIRQ			1024
 #endif
 
+#if !defined(__ASSEMBLER__)
 enum {
 	IRQ_SOFTWARE_USER,
 	IRQ_SOFTWARE_SUPERVISOR,
@@ -53,5 +54,6 @@
 	IRQ_EXTERNAL_HYPERVISOR,
 	IRQ_EXTERNAL_MACHINE,
 };
+#endif
 
 #endif /* !_MACHINE_INTR_MACHDEP_H_ */
diff --git a/sys/sys/intr.h b/sys/sys/intr.h
--- a/sys/sys/intr.h
+++ b/sys/sys/intr.h
@@ -33,14 +33,14 @@
 #error Need INTRNG for this file
 #endif
 
-#include <sys/systm.h>
-
 #include <machine/intr.h>
 
 #define	INTR_IRQ_INVALID	0xFFFFFFFF
 
 #define INTR_ROOT_IRQ	0
 
+#if !defined(__ASSEMBLER__)
+
 enum intr_map_data_type {
 	INTR_MAP_DATA_ACPI = 0,
 	INTR_MAP_DATA_FDT,
@@ -171,4 +171,6 @@
 /* Main interrupt handler called from asm on most archs except riscv. */
 void intr_irq_handler(struct trapframe *tf, uint32_t rootnum);
 
+#endif /* !ASSEMBLER */
+
 #endif	/* _SYS_INTR_H */