diff --git a/libc/kernel/arch-sh/asm/irq.h b/libc/kernel/arch-sh/asm/irq.h
new file mode 100644
index 0000000..128135a
--- /dev/null
+++ b/libc/kernel/arch-sh/asm/irq.h
@@ -0,0 +1,26 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef __ASM_SH_IRQ_H
+#define __ASM_SH_IRQ_H
+
+#include <asm/machvec.h>
+
+#define NR_IRQS 256
+
+#define evt2irq(evt) (((evt) >> 5) - 16)
+#define irq2evt(irq) (((irq) + 16) << 5)
+
+#define irq_canonicalize(irq) (irq)
+#define irq_demux(irq) sh_mv.mv_irq_demux(irq)
+#define irq_ctx_init(cpu) do { } while (0)
+#define irq_ctx_exit(cpu) do { } while (0)
+#endif