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add test case to run_across_bb

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demonstrates that calling emu_start from a BB start to another BB end works fine.
This commit is contained in:
Willi Ballenthin 2015-11-13 08:59:36 -05:00
parent 22d2d3bdbb
commit c97fa4fd8a
1 changed files with 56 additions and 0 deletions
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56
tests/regress/run_across_bb.py
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@ -33,11 +33,67 @@ def showpc(mu):
class RunAcrossBBTest(regress.RegressTest): class RunAcrossBBTest(regress.RegressTest):
def test_run_all(self):
try:
#######################################################################
# emu SETUP
#######################################################################
print("\n---- test: run_all ----")
mu = Uc(UC_ARCH_X86, UC_MODE_32)
def hook_code(uc, address, size, user_data):
print(">>> Tracing instruction at 0x%x, instruction size = %u" %(address, size))
mu.hook_add(UC_HOOK_CODE, hook_code)
# base of CODE
mu.mem_map(0x1000, 0x1000)
mu.mem_write(0x1000, CODE)
# stack
mu.mem_map(0x2000, 0x1000)
mu.reg_write(UC_X86_REG_EIP, 0x1000)
mu.reg_write(UC_X86_REG_ESP, 0x2800)
self.assertEqual(0x1000, mu.reg_read(UC_X86_REG_EIP), "unexpected PC")
self.assertEqual(0x2800, mu.reg_read(UC_X86_REG_ESP), "unexpected SP")
showpc(mu)
mu.emu_start(0x1000, 0x1016)
# should exec the following four instructions:
# 1000: b8 00 00 00 00 mov eax,0x0 <
# 1005: 40 inc eax <
# 1006: 40 inc eax <
# 1007: 68 10 10 00 00 push 0x1010 <
# 100c: c3 ret -----------+
# 100d: cc int3 |
# 100e: cc int3 |
# 100f: cc int3 |
# 1010: b8 00 00 00 00 mov eax,0x0 <-+
# 1015: 40 inc eax <
# 1016: 40 inc eax <
self.assertEqual(0x1016, mu.reg_read(UC_X86_REG_EIP), "unexpected PC (2)")
self.assertEqual(0x2800, mu.reg_read(UC_X86_REG_ESP), "unexpected SP (2)")
showpc(mu)
except UcError as e:
if e.errno == UC_ERR_FETCH_UNMAPPED:
# during initial test dev, bad fetch at 0x1010, but the data is there,
# and this proves it
print("!!! about to bail due to bad fetch... here's the data at PC:")
print(binascii.hexlify(mu.mem_read(mu.reg_read(UC_X86_REG_EIP), 0x8)))
self.assertFalse(True, "ERROR: %s @ 0x%x" % (e, mu.reg_read(UC_X86_REG_EIP)))
def test_run_across_bb(self): def test_run_across_bb(self):
try: try:
####################################################################### #######################################################################
# emu SETUP # emu SETUP
####################################################################### #######################################################################
print("\n---- test: run_across_bb ----")
mu = Uc(UC_ARCH_X86, UC_MODE_32) mu = Uc(UC_ARCH_X86, UC_MODE_32)