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Make the exception handlers dump more information

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You'll need to the latest version of exception_dump_parser.py
This commit is contained in:
TuxSH
2016-06-07 19:25:45 +02:00
parent ca587692eb
commit e478908dca
10 changed files with 115 additions and 59 deletions
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26
exceptions/exception_dump_parser.py
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@@ -67,7 +67,7 @@ def makeRegisterLine(A, rA, B, rB):
return "{0:<15}{1:<20}{2:<15}{3:<20}".format(A, "{0:08x}".format(rA), B, "{0:08x}".format(rB))
handledExceptionNames = ("FIQ", "undefined instruction", "prefetch abort", "data abort")
registerNames = tuple("r{0}".format(i) for i in range(13)) + ("sp", "lr", "pc", "cpsr", "fpexc")
registerNames = tuple("r{0}".format(i) for i in range(13)) + ("sp", "lr", "pc", "cpsr") + ("dfsr", "ifsr", "far") + ("fpexc", "fpinst", "fpinst2")
svcBreakReasons = ("(svcBreak: panic)", "(svcBreak: assertion failed)", "(svcBreak: user-related)")
if __name__ == "__main__":
@@ -79,27 +79,37 @@ if __name__ == "__main__":
if unpack_from("<2I", data) != (0xdeadc0de, 0xdeadcafe):
raise SystemExit("Invalid file format")
processor, exceptionType, _, nbRegisters, codeDumpSize, stackDumpSize = unpack_from("<6I", data, 12)
version, processor, exceptionType, _, nbRegisters, codeDumpSize, stackDumpSize, additionalDataSize = unpack_from("<8I", data, 8)
nbRegisters //= 4
if version < (1 << 16) | 1:
raise SystemExit("Incompatible format version, please use the appropriate parser.")
registers = unpack_from("<{0}I".format(nbRegisters), data, 40)
codeDump = data[40 + 4 * nbRegisters : 40 + 4 * nbRegisters + codeDumpSize]
stackOffset = 40 + 4 * nbRegisters + codeDumpSize
stackDump = data[stackOffset : stackOffset + stackDumpSize]
addtionalDataOffset = stackOffset + stackDumpSize
additionalData = data[addtionalDataOffset : addtionalDataOffset + additionalDataSize]
if processor == 9: print("Processor: ARM9")
else: print("Processor: ARM11 (core {0})".format(processor >> 16))
svcBreakStr = ""
typeDetailsStr = ""
if exceptionType == 2 and (registers[16] & 0x20) == 0 and unpack_from("<I", codeDump[-4:])[0] == 0xe12fff7f:
svcBreakStr = " " + (svcBreakReasons[registers[0]] if registers[0] < 3 else "(svcBreak)")
print("Exception type: {0}{1}".format("unknown" if exceptionType >= len(handledExceptionNames) else handledExceptionNames[exceptionType], svcBreakStr))
typeDetailsStr = " " + (svcBreakReasons[registers[0]] if registers[0] < 3 else "(svcBreak)")
elif processor != 9 and (registers[20] & 0x80000000) != 0:
typeDetailsStr = " (VFP exception)"
print("Exception type: {0}{1}".format("unknown" if exceptionType >= len(handledExceptionNames) else handledExceptionNames[exceptionType], typeDetailsStr))
if additionalDataSize != 0:
print("Current process: {0} ({1:016x})".format(additionalData[:8].decode("ascii"), unpack_from("<Q", additionalData, 8)[0]))
print("\nRegister dump:\n")
for i in range(0, nbRegisters - (nbRegisters % 2), 2):
for i in range(0, nbRegisters - (nbRegisters % 2), 2):
if i == 16: print("")
print(makeRegisterLine(registerNames[i], registers[i], registerNames[i+1], registers[i+1]))
if nbRegisters % 2 == 1: print("{0:<15}{1:<20}".format(registerNames[-2], "{0:08x}".format(registers[-1])))
if nbRegisters % 2 == 1: print("{0:<15}{1:<20}".format(registerNames[nbRegisters - 1], "{0:08x}".format(registers[nbRegisters - 1])))
print("\nCode dump:\n")
print(hexdump(registers[15] - codeDumpSize + (4 if (registers[16] & 0x20 == 0) else 2), codeDump))