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ElfAnalyzer: Support DWARF v4
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Signed-off-by: Peace Lee <[email protected]>
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@iipeace
iipeace committed Mar 26, 2021
1 parent f03e103 commit a502cd9
Showing 1 changed file with 100 additions and 45 deletions.
145 changes: 100 additions & 45 deletions guider/guider.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
__credits__ = "Peace Lee"
__license__ = "GPLv2"
__version__ = "3.9.8"
__revision__ = "210324"
__revision__ = "210326"
__maintainer__ = "Peace Lee"
__email__ = "[email protected]"
__repository__ = "https://github.com/iipeace/guider"
Expand Down Expand Up @@ -3588,9 +3588,24 @@ def convHtmlChar(string):


@staticmethod
def printTime():
diff = time.time() - UtilMgr.curTime
print('\n[Elapsed: %f]' % diff)
def printTime(name=None, update=False):
# get current time #
now = time.time()
diff = now - UtilMgr.curTime

# update timestamp #
if update:
UtilMgr.current = now

# add name #
if name:
prefix = '[%s]' % name
else:
prefix = ''

# print time diff #
string = '\n%s[Elapsed: %f]' % (prefix, diff)
print(UtilMgr.convColor(string, 'RED'))



Expand Down Expand Up @@ -19249,6 +19264,9 @@ def printHelp(force=False):
- Print all call contexts except for wait status for a specific thread
# {0:1} {1:1} a.out -g a.out -q EXCEPTWAIT

- Print all call contexts except for register info for a specific thread
# {0:1} {1:1} a.out -g a.out -q NOCONTEXT

- Print all call contexts for a specific thread after loading all symbols in stop status
# {0:1} {1:1} a.out -g a.out -q STOPTARGET

Expand Down Expand Up @@ -20013,6 +20031,9 @@ def printHelp(force=False):
- Monitor function calls except for wait status for a specific thread
# {0:1} {1:1} a.out -g a.out -q EXCEPTWAIT

- Monitor function calls except for register info for a specific thread
# {0:1} {1:1} a.out -g a.out -q NOCONTEXT

- Monitor function calls except for no symbol functions for a specific thread
# {0:1} {1:1} a.out -g a.out -q EXCEPTNOSYM

Expand Down Expand Up @@ -44718,6 +44739,7 @@ def __init__(self, pid=None, execCmd=None, attach=True, mode=None):
self.status = 'enter'
self.traceStatus = False
self.runStatus = False
self.sampleStatus = True
self.attached = attach
self.execCmd = execCmd
self.arch = arch = SysMgr.getArch()
Expand Down Expand Up @@ -48781,7 +48803,8 @@ def makeSvgString(callTree, callCnt):
palette = Timeline.Config().PALETTE

def _iterNode(array, target, callCnt, depth=0, pos=0, height=36):
for node, value in target.items():
for node, value in sorted(target.items(),
key=lambda x:x[1]['cnt'], reverse=True):
# get stats #
totalCnt = callCnt[0]
cnt = value['cnt']
Expand Down Expand Up @@ -49090,12 +49113,16 @@ def _finishPrint():

# check samples #
if not self.callTable:
SysMgr.printWarn(
"no sample data for %s(%s)" % \
(self.comm, self.pid), True)
if not self.sampleStatus:
SysMgr.printWarn(
"no sample data for %s(%s)" % \
(self.comm, self.pid), True)
_resetStats()
return

# update status for sample collection #
self.sampleStatus = True

# check user input #
SysMgr.waitUserInput(
wait=0.000001, msg="press enter key...")
Expand Down Expand Up @@ -49350,7 +49377,7 @@ def clearArgs(self):



def getAnonVrangeByOffset(self, offset, fname=None):
def getAnonRangeByOffset(self, offset, fname=None):
if not fname in self.pmap:
return

Expand Down Expand Up @@ -49378,7 +49405,7 @@ def getAnonVrangeByOffset(self, offset, fname=None):



def getVrangeBySymbol(self, symbol, fname=None):
def getRangeBySym(self, symbol, fname=None):
if not fname in self.pmap:
return

Expand Down Expand Up @@ -49568,10 +49595,10 @@ def getSymbolInfo(self, vaddr, onlyFunc=True, onlyExec=True):
self.needMapScan = True

# print error message and return #
procInfo = '%s(%s)' % (self.comm, self.pid)
SysMgr.printWarn(
'fail to get file name via addr %s for %s' % \
(hex(vaddr).rstrip('L'), procInfo))
'fail to get symbol via %s for %s(%s)' % \
(hex(vaddr).rstrip('L'), self.comm, self.pid))

return None

# get real offset for memory hole #
Expand All @@ -49592,12 +49619,11 @@ def getSymbolInfo(self, vaddr, onlyFunc=True, onlyExec=True):
self.needMapScan = True

# print error message and return #
procInfo = '%s(%s)' % (self.comm, self.pid)
SysMgr.printWarn((
'fail to get offset in %s via %s for %s '
'because of wrong memory map') % \
(fname, hex(vaddr).rstrip('L'), procInfo))
return ['??', fname, '??', '??', '??', '??']
SysMgr.printWarn(
'fail to get symbol via %s for %s(%s)' % \
(hex(vaddr).rstrip('L'), self.comm, self.pid))

return None

# remove suffix in file name #
fname = fname.rsplit(SysMgr.magicStr, 1)[0]
Expand All @@ -49623,10 +49649,12 @@ def getSymbolInfo(self, vaddr, onlyFunc=True, onlyExec=True):
sys.exit(0)
except:
SysMgr.printWarn(
'fail to get symbol from %s for %s(%s)' % \
'fail to get symbol via %s for %s(%s)' % \
(hex(offset).rstrip('L'), self.comm, self.pid),
reason=True)
return ['??', fname, '??', '??', '??', '??']

# return #
return [hex(offset).rstrip('L'), fname, '??', '??', '??', '??']



Expand Down Expand Up @@ -49678,10 +49706,13 @@ def printContext(
self, regs=True, bt=True, sig=True, deref=True,
args=None, newline=False):

# check skip condition #
if not regs and not bt:
return
elif not SysMgr.printEnable:
return
elif 'NOCONTEXT' in SysMgr.environList:
return

if newline:
prefix = '\n'
Expand Down Expand Up @@ -50028,13 +50059,19 @@ def getBacktraceStr(self, bt, default=20, maximum=0, force=False):
indentStr = ' ' * default

for item in bt:
if item[1] == item[2] == '??':
sym = hex(item[0]).rstrip('L')
else:
sym = item[1]
fname = item[2]

# remove redundant symbols #
if prevSym == item[1] and prevFile == item[2]:
if prevSym == sym and prevFile == fname:
cnt += 1
continue
else:
prevSym = item[1]
prevFile = item[2]
prevSym = sym
prevFile = fname

# check redundant symbols #
if cnt > 0:
Expand All @@ -50044,7 +50081,7 @@ def getBacktraceStr(self, bt, default=20, maximum=0, force=False):
cntStr = ''

# build a new string #
newStr = ' <- %s[%s]%s' % (item[1], item[2], cntStr)
newStr = ' <- %s[%s]%s' % (sym, fname, cntStr)
if btStr and len(newStr) + pos > maximum:
newStr = '\n%s%s' % (indentStr, newStr)
pos = len(newStr) - 1
Expand Down Expand Up @@ -51323,10 +51360,12 @@ def handleUsercall(self, update=True):

# print unknown call address #
if fname == '??':
sym = hex(self.pc).rstrip('L')

if self.isRealtime:
self.addSample('??', fname, realtime=True, bt=backtrace)
self.addSample(sym, fname, realtime=True, bt=backtrace)
elif SysMgr.outPath:
self.addSample('??', fname, bt=backtrace)
self.addSample(sym, fname, bt=backtrace)
return

# check contiguous unknown symbol #
Expand All @@ -51351,10 +51390,10 @@ def handleUsercall(self, update=True):
try:
# symbol range #
if sym != '??':
vstart, vend = self.getVrangeBySymbol(sym, fname)
vstart, vend = self.getRangeBySym(sym, fname)
# anon range #
else:
vstart, vend = self.getAnonVrangeByOffset(offset, fname)
vstart, vend = self.getAnonRangeByOffset(offset, fname)
except SystemExit:
sys.exit(0)
except:
Expand Down Expand Up @@ -52277,6 +52316,7 @@ def initValues(self):
self.comm = SysMgr.getComm(self.pid, cache=True)
self.exe = SysMgr.getExeName(self.pid)
self.start = self.last = time.time()
self.sampleStatus = True
self.statFd = None
self.kernelFd = None
self.prevStat = None
Expand Down Expand Up @@ -52698,28 +52738,30 @@ def runEventLoop(self):
self.ptraceEvent(self.traceEventList)
self.ptrace(self.cmd)

# KILL / SEGV signal #
# KILL / SEGV / ABRT signal #
elif SysMgr.isTermSignal(stat):
# print status #
SysMgr.printErr(
'detected %s for %s(%s)' % \
(ConfigMgr.SIG_LIST[stat], self.comm, self.pid))

# print context info #
self.printContext(newline=True)
if SysMgr.showAll:
self.printContext(newline=True)

SysMgr.printErr(
'terminated %s(%s) because of %s' % \
(self.comm, self.pid, ConfigMgr.SIG_LIST[stat]))
# deliver signal #
if self.cont(check=True, sig=stat) < 0:
sys.exit(0)

# set fault flag to shared memory #
self.setFaultFlag()

if SysMgr.isTopMode():
SysMgr.waitEvent()

sys.exit(0)

# exit #
elif stat == -1:
if self.status == 'exit':
SysMgr.printPipe(' ')

# print status #
SysMgr.printErr(
'terminated %s(%s)' % (self.comm, self.pid))

Expand Down Expand Up @@ -52762,7 +52804,7 @@ def runEventLoop(self):
'detected %s(%s) with error' % \
(self.comm, self.pid), reason=True)

# continue target #
# deliver signal #
if self.mode == 'break':
if self.cont(check=True) < 0:
sys.exit(0)
Expand Down Expand Up @@ -58986,10 +59028,14 @@ def _convRegName(arg, regList):
else:
ehdata = fd.read(8)

# size for address and segment in DWARF v4 #
if ver >= 4:
# address size (uint8) is added in DWARF v4 #
# segment size (uint8) is added in DWARF v4 #
pass
addrSize = struct.unpack('B', table[pos:pos+1])[0]
pos += 1
segmentSize = struct.unpack('B', table[pos:pos+1])[0]
pos += 1
else:
addrSize = segmentSize = -1

# Call Alignment Factor #
data = table[pos:].decode('latin-1')
Expand Down Expand Up @@ -59033,6 +59079,8 @@ def _convRegName(arg, regList):
'length': size,
'id': cid,
'version': ver,
'addrsize': addrSize,
'segmentsize': segmentSize,
'caf': caf,
'daf': daf,
'rar': rar,
Expand All @@ -59051,14 +59099,21 @@ def _convRegName(arg, regList):
(offset, size, cid)
printStr += ' %-22s %s\n' % ('Version:', ver)
printStr += ' %-22s "%s"\n' % ('Augmentation:', augstr)
if addrSize >= 0:
printStr += ' %-22s %s\n' % \
('Pointer Size:', addrSize)
if segmentSize >= 0:
printStr += ' %-22s %s\n' % \
('Segment Size:', segmentSize)
printStr += ' %-22s %x\n' % \
('Code alignment factor:', caf)
printStr += ' %-22s %x\n' % \
('Data alignment factor:', daf)
printStr += ' %-22s %d\n' % \
('Return address column:', rar)
printStr += ' %-22s %s\n\n' % \
('Augmentation data: ', augdatastr)
if augdatastr:
printStr += ' %-22s %s\n\n' % \
('Augmentation data: ', augdatastr)
SysMgr.printPipe(printStr)

#-------------------- FDE --------------------#
Expand Down

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