def parseInteger(self, text):
# Remove spaces and convert to lower case
text = text.strip()
if " " in text:
raise ValueError("Space are forbidden: %r" % text)
text = text.lower()
# Replace registers by their value
orig_text = text
text = REGISTER_REGEX.sub(self.readRegister, text)
# Replace hexadecimal numbers by decimal numbers
def readHexadecimal(regs):
text = regs.group(0)
if text.startswith("0x"):
text = text[2:]
elif not re.search("[a-f]", text):
return text
value = int(text, 16)
return str(value)
text = re.sub(r"(?:0x)?[0-9a-f]+", readHexadecimal, text)
# Reject invalid characters
if not re.match(r"^[()<>+*/&0-9-]+$", text):
raise ValueError("Invalid expression: %r" % orig_text)
# Use integer division (a//b) instead of float division (a/b)
text = text.replace("/", "//")
# Finally, evaluate the expression
is_pointer = text.startswith("*")
if is_pointer:
text = text[1:]
try:
value = eval(text)
value = truncateWord(value)
except SyntaxError:
raise ValueError("Invalid expression: %r" % orig_text)
if is_pointer:
value = self.process.readWord(value)
return value
def parseInteger(self, text):
# Remove spaces and convert to lower case
text = text.strip()
if " " in text:
raise ValueError("Space are forbidden: %r" % text)
text = text.lower()
# Replace registers by their value
orig_text = text
text = REGISTER_REGEX.sub(self.readRegister, text)
# Replace hexadecimal numbers by decimal numbers
def readHexadecimal(regs):
text = regs.group(0)
if text.startswith("0x"):
text = text[2:]
elif not re.search("[a-f]", text):
return text
value = int(text, 16)
return str(value)
text = re.sub(r"(?:0x)?[0-9a-f]+", readHexadecimal, text)
# Reject invalid characters
if not re.match(r"^[()<>+*/&0-9-]+$", text):
raise ValueError("Invalid expression: %r" % orig_text)
# Use integer division (a//b) instead of float division (a/b)
text = text.replace("/", "//")
# Finally, evaluate the expression
is_pointer = text.startswith("*")
if is_pointer:
text = text[1:]
try:
value = eval(text)
value = truncateWord(value)
except SyntaxError:
raise ValueError("Invalid expression: %r" % orig_text)
if is_pointer:
value = self.process.readWord(value)
return value
def parseInteger(text, procWrap=None):
global ptraceProc_g
ptraceProc_g = procWrap.ptraceProcess if procWrap else None
# Remove spaces and convert to lower case
text = text.strip()
if " " in text:
raise ValueError("Space are forbidden: %r" % text)
text = text.lower()
orig_text = text
# replace symbols by their value
def readSymbols(symbol):
text = symbol.group(0)
if procWrap is None:
return text
else:
try:
return str(procWrap.programinfo.getAddrOf(text))
except ValueError as e:
debug(e)
return text
# Replace hexadecimal numbers by decimal numbers
def readHexadecimal(regs):
text = regs.group(0)
if text.startswith("0x"):
text = text[2:]
elif not re.search("[a-f]", text):
return text
value = int(text, 16)
return str(value)
# (first_char)(rest)* if your symbol contains other characters, include them here
symbol_regex = r"(?<!0x)[a-zA-Z_][a-zA-Z0-9_.]*"
symbol_regex_with_library = symbol_regex + r"(:" + symbol_regex + ")?"
text = re.sub(r"(?:0x)[0-9a-f]+", readHexadecimal, text)
text = re.sub(symbol_regex_with_library, readSymbols, text)
# Replace registers by their value
text = REGISTER_REGEX.sub(readRegister, text)
# Reject invalid characters
if not re.match(r"^[()<>+*/&0-9-]+$", text):
raise ValueError("Invalid expression: %r" % orig_text)
# Use integer division (a//b) instead of float division (a/b)
text = text.replace("/", "//")
# Finally, evaluate the expression
is_pointer = text.startswith("*")
if is_pointer:
text = text[1:]
try:
value = eval(text)
value = truncateWord(value)
except SyntaxError:
raise ValueError("Invalid expression: %r" % orig_text)
if is_pointer:
assert isinstance(ptraceProc_g, PtraceProcess)
# value = ptraceProc_g.readWord(value)
try:
value = ptraceProc_g.readBytes(value, 8)
value = bytes2word(value)
except PtraceError as e:
warning(str(e))
value = 0
return value
