def get_debug_filepath()

in ArmPlatformPkg/Scripts/Ds5/firmware_volume.py [0:0]

• 21 lines of code
• 7 McCabe index (conditional complexity)

    def get_debug_filepath(self):
        stripped_size = struct.unpack("<H", self.ec.getMemoryService().read(self.base_te + 0x6, 2, 32))[0]
        stripped_size -= EfiSectionTE.SIZEOF_EFI_TE_IMAGE_HEADER

        debug_dir_entry_rva = self.ec.getMemoryService().readMemory32(self.base_te + 0x20)
        if debug_dir_entry_rva == 0:
            raise Exception("EfiFileSectionTE","No debug directory for image")
        debug_dir_entry_rva -= stripped_size

        debug_type = self.ec.getMemoryService().readMemory32(self.base_te + debug_dir_entry_rva + 0xC)
        if (debug_type != 0xdf) and (debug_type != EfiFileSection.EFI_IMAGE_DEBUG_TYPE_CODEVIEW):
            raise Exception("EfiFileSectionTE","Debug type is not dwarf")

        debug_rva = self.ec.getMemoryService().readMemory32(self.base_te + debug_dir_entry_rva + 0x14)
        debug_rva -= stripped_size

        dwarf_sig = struct.unpack("cccc", self.ec.getMemoryService().read(self.base_te + debug_rva, 4, 32))
        if (dwarf_sig != 0x66727764) and (dwarf_sig != FirmwareFile.CONST_NB10_SIGNATURE):
            raise Exception("EfiFileSectionTE","Dwarf debug signature not found")

        if dwarf_sig == 0x66727764:
            filename = self.base_te + debug_rva + 0xc
        else:
            filename = self.base_te + debug_rva + 0x10
        filename = struct.unpack("400s", self.ec.getMemoryService().read(filename, 400, 32))[0]
        return filename[0:string.find(filename,'\0')]