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27 lines
868 B
27 lines
868 B
#!/usr/bin/python
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# Tests if the SS segment override prefix is not explicitly produced when unnecessary
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# Github issue: #9
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# Author: Duncan (mrexodia)
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from keystone import *
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import regress
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class TestX86(regress.RegressTest):
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def runTest(self):
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# Initialize Keystone engine
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ks = Ks(KS_ARCH_X86, KS_MODE_32)
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# Assemble to get back insn encoding & statement count
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encoding1, _ = ks.asm(b"MOV EAX,DWORD PTR SS:[ESP+8]")
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encoding2, _ = ks.asm(b"MOV EAX,DWORD PTR SS:[EBP+8]")
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# Assert the result
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self.assertEqual(encoding1, [ 0x8B, 0x44, 0x24, 0x08 ])
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self.assertEqual(encoding2, [ 0x8B, 0x45, 0x08 ])
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encoding, _ = ks.asm(b"MOV DWORD PTR SS:[EBP-0xC],0x1994000")
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self.assertEqual(encoding, [ 0xC7, 0x45, 0xF4, 0x00, 0x40, 0x99, 0x01 ])
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if __name__ == '__main__':
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regress.main()
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