Add GD32 crc component

Author: cla7aye15I4nd

qiling/hw/math/__init__.py

@@ -3,4 +3,5 @@
 # Cross Platform and Multi Architecture Advanced Binary Emulation Framework
 #
 
-from .stm32f4xx_crc import STM32F4xxCrc
+from .stm32f4xx_crc import STM32F4xxCrc
+from .gd32vf1xx_crc import GD32VF1xxCrc

qiling/hw/math/gd32vf1xx_crc.py

@@ -0,0 +1,25 @@
+import ctypes
+
+from qiling.hw.peripheral import QlPeripheral
+
+
+class GD32VF1xxCrc(QlPeripheral):
+    class Type(ctypes.Structure):
+        """ cyclic redundancy check calculation unit 
+        """
+
+        _fields_ = [
+            ("DATA" , ctypes.c_uint32), # Address offset: 0x0, Data register
+            ("FDATA", ctypes.c_uint32), # Address offset: 0x04, Free data register
+            ("CTL"  , ctypes.c_uint32), # Address offset: 0x08, Control register
+        ]
+
+    def __init__(self, ql, label):
+        super().__init__(ql, label)
+
+        self.crc = self.struct(
+            DATA  =  0xffffffff,
+            FDATA =  0x00000000,
+            CTL   =  0x00000000,
+        )
+