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Merge pull request #85 from SeanHeelan/master

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Regression test for issue #82 (Hang on jmp EBX with a non-zero EBX pointing to umapped memory)
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Nguyen Anh Quynh 2015-08-30 23:53:51 +08:00
parent 45cce49751 4b05e736a1
commit 73cf6e700e
1 changed files with 33 additions and 0 deletions
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regress/jmp_ebx_hang.py Executable file
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#!/usr/bin/env python
"""See https://github.com/unicorn-engine/unicorn/issues/82"""
import unicorn
CODE_ADDR = 0x10101000
CODE = b'\xff\xe3'
mu = unicorn.Uc(unicorn.UC_ARCH_X86, unicorn.UC_MODE_32)
mu.mem_map(CODE_ADDR, 1024 * 4)
mu.mem_write(CODE_ADDR, CODE)
# If EBX is zero then an exception is raised, as expected
mu.reg_write(unicorn.x86_const.UC_X86_REG_EBX, 0x0)
try:
mu.emu_start(CODE_ADDR, CODE_ADDR + 2, count=1)
except unicorn.UcError as e:
assert(e.errno == unicorn.UC_ERR_CODE_INVALID)
else:
assert(False)
mu = unicorn.Uc(unicorn.UC_ARCH_X86, unicorn.UC_MODE_32)
mu.mem_map(CODE_ADDR, 1024 * 4)
# If we write this address to EBX then the emulator hangs on emu_start
mu.reg_write(unicorn.x86_const.UC_X86_REG_EBX, 0xaa96a47f)
mu.mem_write(CODE_ADDR, CODE)
try:
mu.emu_start(CODE_ADDR, CODE_ADDR + 2, count=1)
except unicorn.UcError as e:
assert(e.errno == unicorn.UC_ERR_CODE_INVALID)
else:
assert(False)
print "Success"