1#!/usr/bin/python
2from unicorn import *
3from unicorn.x86_const import *
4
5import regress
6
7ESP = 0x2000
8PAGE_SIZE = 1 * 1024 * 1024
9
10#   wait
11#   fnstcw  word ptr [esp]
12#   pop ecx
13CODE = b'\x9B\xD9\x3C\x24\x59'
14
15def hook_mem_write(uc, access, address, size, value, user_data):
16    print("mem WRITE: 0x%x, data size = %u, data value = 0x%x" % (address, size, value))
17    return True
18
19class FpuWrite(regress.RegressTest):
20
21    def mem_reader(self, mu, addr, size, expected):
22        tmp = mu.mem_read(addr, size)
23        for i, e in zip(tmp, expected):
24            self.assertEquals(e, i)
25
26    def runTest(self):
27        mu = Uc(UC_ARCH_X86, UC_MODE_32)
28        mu.mem_map(0, PAGE_SIZE)
29        mu.mem_write(0, CODE)
30        mu.reg_write(UC_X86_REG_ESP, ESP)
31
32        mu.hook_add(UC_HOOK_MEM_WRITE, hook_mem_write)
33        mu.emu_start(0x0, 5, 0, 2)
34        esp = mu.reg_read(UC_X86_REG_ESP)
35        self.mem_reader(mu, esp, 10, [0] * 10)
36
37if __name__ == '__main__':
38    regress.main()
39