Revamp Python regression tests suite (#2022)

* Fix Python regression test suite (partial)

* Fix Python regression test suite

* Add a test for mapping at high addresses

* Add ctl tests

tests/regress/arm_vldr_invalid.py

@@ -1,18 +1,24 @@
 #!/usr/bin/python
 
+import regress
+
 from unicorn import *
 from unicorn.arm_const import *
 
-import regress
 
 class VldrPcInsn(regress.RegressTest):
 
     def runTest(self):
         uc = Uc(UC_ARCH_ARM, UC_MODE_ARM)
+
         uc.mem_map(0x1000, 0x1000)
-        uc.mem_write(0x1000, 'ed9f8a3d'.decode('hex')) # vldr s16, [pc, #244]
-        # this will raise invalid insn
-        uc.emu_start(0x1000, 0x1004)
+        uc.mem_write(0x1000, b'\xed\x9f\x8a\x3d') # vldr s16, [pc, #244]
+
+        with self.assertRaises(UcError) as ex:
+            uc.emu_start(0x1000, 0x1004)
+
+        self.assertEqual(UC_ERR_INSN_INVALID, ex.exception.errno)
+
 
 if __name__ == '__main__':
     regress.main()