diff --git a/sys/arch/arm32/arm32/db_interface.c b/sys/arch/arm32/arm32/db_interface.c
index 81de63999f62..7d0e250c87fe 100644
--- a/sys/arch/arm32/arm32/db_interface.c
+++ b/sys/arch/arm32/arm32/db_interface.c
@@ -1,4 +1,4 @@
-/* $NetBSD: db_interface.c,v 1.7 1996/06/03 21:53:34 mark Exp $ */
+/* $NetBSD: db_interface.c,v 1.8 1996/06/12 19:57:08 mark Exp $ */
 
 /* 
  * Copyright (c) 1996 Scott K. Stevens
@@ -233,13 +233,15 @@ Debugger()
 }
 
 void db_show_vmstat_cmd __P((db_expr_t addr, int have_addr, db_expr_t count, char *modif));
-void db_show_fs_cmd __P((db_expr_t addr, int have_addr, db_expr_t count, char *modif));
-void db_show_vnode_cmd __P((db_expr_t addr, int have_addr, db_expr_t count, char *modif));
+void db_show_fs_cmd	__P((db_expr_t addr, int have_addr, db_expr_t count, char *modif));
+void db_show_vnode_cmd	__P((db_expr_t addr, int have_addr, db_expr_t count, char *modif));
+void db_show_intrchain_cmd	__P((db_expr_t addr, int have_addr, db_expr_t count, char *modif));
 
 struct db_command arm32_db_command_table[] = {
 	{ "vmstat",	db_show_vmstat_cmd,	0, NULL },
 	{ "fs",		db_show_fs_cmd,		0, NULL },
 	{ "vnode",	db_show_vnode_cmd,	0, NULL },
+	{ "intrchain",	db_show_intrchain_cmd,	0, NULL },
 	{ NULL, 	NULL, 			0, NULL }
 };
 
diff --git a/sys/arch/arm32/arm32/db_machdep.c b/sys/arch/arm32/arm32/db_machdep.c
index 370db63665f9..5759f59eb44a 100644
--- a/sys/arch/arm32/arm32/db_machdep.c
+++ b/sys/arch/arm32/arm32/db_machdep.c
@@ -1,4 +1,4 @@
-/* $NetBSD: db_machdep.c,v 1.3 1996/06/03 21:53:35 mark Exp $ */
+/* $NetBSD: db_machdep.c,v 1.4 1996/06/12 19:57:06 mark Exp $ */
 
 /* 
  * Copyright (c) 1996 Mark Brinicombe
@@ -33,12 +33,15 @@
 #include <sys/mount.h>
 #include <sys/vnode.h>
 #include <sys/systm.h>
+
 #include <machine/db_machdep.h>
 
 #include <ddb/db_access.h>
 #include <ddb/db_sym.h>
 #include <ddb/db_output.h>
 
+#include <machine/irqhandler.h>
+
 void
 db_show_fs_cmd(addr, have_addr, count, modif)
 	db_expr_t       addr;
@@ -163,3 +166,35 @@ db_show_vmstat_cmd(addr, have_addr, count, modif)
 	db_printf("%9u pages inactive\n", sum.v_inactive_count);
 	db_printf("%9u bytes per page\n", sum.v_page_size);
 }
+
+void
+db_show_intrchain_cmd(addr, have_addr, count, modif)
+	db_expr_t       addr;
+	int             have_addr;
+	db_expr_t       count;
+	char            *modif;
+{
+	int loop;
+	irqhandler_t *ptr;
+	char *name;
+	db_expr_t offset;
+
+	for (loop = 0; loop < NIRQS; ++loop) {
+		ptr = irqhandlers[loop];
+		if (ptr) {
+			db_printf("IRQ %d\n", loop);
+
+			while (ptr) {
+				db_printf("  %-13s %d ", ptr->ih_name, ptr->ih_level);
+				db_find_sym_and_offset((u_int)ptr->ih_func, &name, &offset);
+				if (name == NULL)
+					name = "?";
+
+				db_printf("%s(", name);
+				db_printsym((u_int)ptr->ih_func, DB_STGY_PROC);
+				db_printf(") %08x\n", (u_int)ptr->ih_arg);
+				ptr = ptr->ih_next;
+			}
+		}
+	}
+}