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Merge pull request #43 from mothran/fpu_mem_write

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Added regression test for fstcw not writing to memory
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Nguyen Anh Quynh 2015-08-26 09:57:06 +08:00
commit 6feea9e6d6
1 changed files with 32 additions and 0 deletions
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regress/fpu_mem_write.py Normal file
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#!/usr/bin/python
from unicorn import *
from unicorn.x86_const import *
ESP = 0x2000
PAGE_SIZE = 1 * 1024 * 1024
# fstcw [esp]
# pop ecx
CODE = b'\x9B\xD9\x3C\x24\x59'
def mem_reader(addr, size):
tmp = mu.mem_read(addr, size)
for i in tmp:
print(" 0x%x" % i),
print("")
def hook_mem_write(uc, access, address, size, value, user_data):
print("mem WRITE: 0x%x, data size = %u, data value = 0x%x" % (address, size, value))
return True
mu = Uc(UC_ARCH_X86, UC_MODE_32)
mu.mem_map(0, PAGE_SIZE)
mu.mem_write(0, CODE)
mu.reg_write(UC_X86_REG_ESP, ESP)
mu.hook_add(UC_HOOK_MEM_WRITE, hook_mem_write)
mu.emu_start(0x0, 0, 0, 2)
esp = mu.reg_read(UC_X86_REG_ESP)
print("value at ESP [0x%X]: " % esp)
mem_reader(esp, 10)