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/wrong_rip_arm.py

@@ -1,38 +1,45 @@
 #!/usr/bin/python
 
+import regress
+
 from unicorn import *
 from unicorn.x86_const import *
 from unicorn.arm_const import *
 
-import regress
 
-# adds  r1, #0x48
-# ldrsb r7, [r7, r7]
-# ldrsh r7, [r2, r1]
-# ldr   r0, [pc, #0x168]
-# cmp   r7, #0xbf
-# str   r7, [r5, #0x20]
-# ldr   r1, [r5, #0x64]
-# strb  r7, [r5, #0xc]
-# ldr   r0, [pc, #0x1a0]
-binary1 = b'\x48\x31\xff\x57\x57\x5e\x5a\x48\xbf\x2f\x2f\x62\x69\x6e\x2f\x73\x68\x48\xc1\xef\x08\x57\x54\x5f\x6a\x3b\x58\x0f\x05'
-# binary1 = b'\x48\x31\xff\x57'
-#adds r1, #0x48
-#ldrsb  r7, [r7, r7]
+CODE = (
+    b'\x48\x31'     #  adds    r1, #0x48
+    b'\xff\x57'     #  ldrsb   r7, [r7, r7]
+    b'\x57\x5e'     #  ldrsh   r7, [r2, r1]
+    b'\x5a\x48'     #  ldr     r0, [pc, #0x168]
+    b'\xbf\x2f'     #  cmp     r7, #0xbf
+    b'\x2f\x62'     #  str     r7, [r5, #0x20]
+    b'\x69\x6e'     #  ldr     r1, [r5, #0x64]
+    b'\x2f\x73'     #  strb    r7, [r5, #0xc]
+    b'\x68\x48'     #  ldr     r0, [pc, #0x1a0]
+
+    b'\xc1\xef\x08\x57\x54\x5f\x6a\x3b\x58\x0f\x05'  # data?
+)
+
+BASE = 0x00000000
+
 
 class WrongRIPArm(regress.RegressTest):
 
     def runTest(self):
         mu = Uc(UC_ARCH_ARM, UC_MODE_THUMB)
-        mu.mem_map(0, 2 * 1024 * 1024)
+
+        mu.mem_map(BASE, 2 * 1024 * 1024)
         # write machine code to be emulated to memory
-        mu.mem_write(0, binary1)
+        mu.mem_write(BASE, CODE)
         mu.reg_write(UC_ARM_REG_R13, 1 * 1024 * 1024)
+
         # emu for maximum 1 instruction.
-        mu.emu_start(0, len(binary1), 0, 1)
+        mu.emu_start(BASE | 0b1, BASE + len(CODE), count=1)
+
         self.assertEqual(0x48, mu.reg_read(UC_ARM_REG_R1))
-        pos = mu.reg_read(UC_ARM_REG_R15)
-        self.assertEqual(0x2, pos)
+        self.assertEqual(0x2, mu.reg_read(UC_ARM_REG_R15))
+
 
 if __name__ == '__main__':
     regress.main()