1 files changed, 33 insertions, 0 deletions
diff --git a/libcpu/risc-v/juicevm/interrupt.c b/libcpu/risc-v/juicevm/interrupt.c
new file mode 100755
index 0000000000..24b8be7f0c
--- /dev/null
+++ b/libcpu/risc-v/juicevm/interrupt.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021/04/24     Juice      The first version
+ */
+
+#include <rthw.h>
+
+#include <board.h>
+
+typedef void (*irq_handler_t)(void);
+extern const irq_handler_t isrTable[];
+
+uintptr_t handle_trap(uintptr_t mcause, uintptr_t epc, uintptr_t *sp)
+{
+    uint32_t intNum;
+    if (mcause & 0x80000000) /* For external interrupt. */
+    {
+    }
+    else
+    {
+        intNum = mcause & 0x1FUL;
+        /* Now call the real irq handler for intNum */
+        if (intNum <= 24)
+        {
+            if (isrTable[intNum])isrTable[intNum]();
+        }
+    }
+}