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itrace.py: fix invalid escape sequences #9

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itrace.py: fix invalid escape sequences #9

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21 changes: 12 additions & 9 deletions scripts/itrace.py
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Original file line number Diff line number Diff line change
Expand Up @@ -84,10 +84,11 @@ class X86_64(Extractor):
branchpattern = re.compile(r'^(?:repz\s+)?(j\w*|call|ret)q?')
# e.g. 0x400(%rax,%rbx,8), 0x123(%rdx), etc.
eapattern = re.compile(r'(-?(?:0x)?[0-9a-f]+)?'
'\(''%([a-z0-9]+)'
'(?:,%([a-z0-9]+),'
'([1248]))?''\)'
'(?:\s*,\s*%([a-z0-9]+))?')
r'\(''%([a-z0-9]+)'
r'(?:,%([a-z0-9]+),'
r'([1248]))?'
r'\)'
r'(?:\s*,\s*%([a-z0-9]+))?')

def printHeader(self, function):
frame = gdb.newest_frame()
Expand Down Expand Up @@ -128,8 +129,9 @@ class ARM64(Extractor):
branchpattern = re.compile(r'^(b\.\w+|bl?r?|cbn?z|ret)\b')
# e.g. [x20,#40], [x20],#8, [x20,x21]
eapattern = re.compile(r'\[(x[0-9]+|sp)'
'(?:\s*,\s*(x[0-9]+|#-?(?:0x)?[0-9a-fA-F]+))?''\]'
'(?:\s*,\s*#(-?(?:0x)?[0-9a-fA-F]+))?')
r'(?:\s*,\s*(x[0-9]+|#-?(?:0x)?[0-9a-fA-F]+))?'
r'\]'
r'(?:\s*,\s*#(-?(?:0x)?[0-9a-fA-F]+))?')

def printHeader(self, function):
frame = gdb.newest_frame()
Expand Down Expand Up @@ -171,8 +173,9 @@ def getEA(self, insn, frame):
class ARM32(Extractor):
branchpattern = re.compile(r'^(b(?!f)\w*|cbn?z)\b')
eapattern = re.compile(r'(?:\[([a-z]+[0-9]*)'
'(?:\s*,\s*([a-z0-9]+|#-?(?:0x)?[0-9a-fA-F]+)|\s*:\d+)?''\]'
'|(?:ld|st)m\w*\.?\w*\s+(\w+)!?,)')
r'(?:\s*,\s*([a-z0-9]+|#-?(?:0x)?[0-9a-fA-F]+)|\s*:\d+)?'
r'\]'
r'|(?:ld|st)m\w*\.?\w*\s+(\w+)!?,)')

def printHeader(self, function):
frame = gdb.newest_frame()
Expand Down Expand Up @@ -379,7 +382,7 @@ def trace():
unit = 'g' if wordsize == 64 else 'w'
try :
value = gdb.execute("x/1x{0} 0x{1:x}".format(unit, ea["addr"]), False, True)
value = re.match('0x[0-9a-fA-F]+\s*<?.*>?\s*:\s+(0x[0-9a-fA-F]+)', value).group(1)
value = re.match(r'0x[0-9a-fA-F]+\s*<?.*>?\s*:\s+(0x[0-9a-fA-F]+)', value).group(1)
except gdb.MemoryError :
value = "'?'"
print("\t{0:48s}#! EA = L0x{1:x}; Value = {2}; PC = 0x{3:x}"
Expand Down