diff options
Diffstat (limited to 'meta-facebook/meta-wedge/recipes-wedge/rackmon/rackmon/hexfile.py')
| -rw-r--r-- | meta-facebook/meta-wedge/recipes-wedge/rackmon/rackmon/hexfile.py | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/meta-facebook/meta-wedge/recipes-wedge/rackmon/rackmon/hexfile.py b/meta-facebook/meta-wedge/recipes-wedge/rackmon/rackmon/hexfile.py deleted file mode 100644 index c484fdf..0000000 --- a/meta-facebook/meta-wedge/recipes-wedge/rackmon/rackmon/hexfile.py +++ /dev/null @@ -1,174 +0,0 @@ -# The MIT License (MIT) -# ===================== -# -# Copyright (c) 2014 Ryan Sturmer -# -# Permission is hereby granted, free of charge, to any person obtaining a copy -# of this software and associated documentation files (the "Software"), to deal -# in the Software without restriction, including without limitation the rights -# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -# copies of the Software, and to permit persons to whom the Software is -# furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice shall be included in all -# copies or substantial portions of the Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -# SOFTWARE. - -# https://github.com/ryansturmer/hexfile/blob/master/hexfile/core.py - -import itertools - -def short(msb,lsb): - return (msb<<8) | lsb - -class HexFile(object): - def __init__(self, segments): - self.segments = segments - - def __getitem__(self, val): - if isinstance(val, slice): - address = val.start - else: - address = val - - for segment in self.segments: - if address in segment: - return segment[val] - - raise IndexError('No segment contains address 0x%x' % address) - - def __len__(self): - return sum(map(len, self.segments)) - - @property - def size(self): - return len(self) - - def __iter__(self): - return itertools.chain(*self.segments) - - @staticmethod - def load(filename): - segments = [Segment(0)] - - with open(filename) as fp: - lines = fp.readlines() - - extended_linear_address = 0 - current_address = 0 - end_of_file = False - - lineno = 0 - for line in lines: - lineno += 1 - line = line.strip(); - if not line.startswith(':'): - continue - - if end_of_file: - raise Exception("Record found after end of file on line %d" % lineno) - - bytes = [int(line[i:i+2], 16) for i in range(1,len(line), 2)] - byte_count = bytes[0] - address = short(*bytes[1:3]) - record_type = bytes[3] - checksum = bytes[-1] - data = bytes[4:-1] - computed_checksum = ((1 << 8)-(sum(bytes[:-1]) & 0xff)) & 0xff - - if(computed_checksum != checksum): - raise Exception("Record checksum doesn't match on line %d" % lineno) - - if record_type == 0: - if byte_count == len(data): - current_address = (address | extended_linear_address) - have_segment = False - for segment in segments: - if segment.end_address == current_address: - segment.data.extend(data) - have_segment = True - break - if not have_segment: - segments.append(Segment(current_address, data)) - else: - raise Exception("Data record reported size does not match actual size on line %d" % lineno) - elif record_type == 1: - end_of_file = True - elif record_type == 4: - if byte_count != 2 or len(data) != 2: - raise Exception("Byte count misreported in extended linear address record on line %d" % lineno) - extended_linear_address = short(*data) << 16 - - else: - raise Exception("Unknown record type: %s" % record_type) - return HexFile(segments) - - def pretty_string(self, stride=16): - retval = [] - for segment in self.segments: - retval.append('Segment @ 0x%08x (%d bytes)' % (segment.start_address, segment.size)) - retval.append(segment.pretty_string(stride=stride)) - retval.append('') - return '\n'.join(retval) - -def load(filename): - return HexFile.load(filename) - -class Segment(object): - def __init__(self, start_address, data = None): - self.start_address = start_address - self.data = data or [] - - def pretty_string(self, stride=16): - retval = [] - addresses = self.addresses - ranges = [addresses[i:i+stride] for i in range(0, self.size, stride)] - for r in ranges: - retval.append('%08x ' % r[0] + ' '.join(['%02x' % self[addr] for addr in r])) - return '\n'.join(retval) - - def __str__(self): - return '<%d byte segment @ 0x%08x>' % (self.size, self.start_address) - def __repr__(self): - return str(self) - - @property - def end_address(self): - return self.start_address + len(self.data) - - @property - def size(self): - return len(self.data) - - def __contains__(self, address): - return address >= self.start_address and address < self.end_address - - def __getitem__(self, address): - if isinstance(address, slice): - if address.start not in self or address.stop-1 not in self: - raise IndexError('Address out of range for this segment') - else: - d = self.data[address.start-self.start_address:address.stop-self.start_address:address.step] - start_address = address.start + self.start_address - return Segment(start_address, d) - else: - if not address in self: - raise IndexError("Address 0x%x is not in this segment" % address) - return self.data[address-self.start_address] - - @property - def addresses(self): - return range(self.start_address, self.end_address) - - def __len__(self): - return len(self.data) - - def __iter__(self): - return iter(self.data) |
