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Code Releases Wiki Activity

dalf: added hex dump function

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This commit is contained in:
Wei-ju Wu
2016-02-19 22:30:16 -08:00
parent f780a9f257
commit a30613f4aa
1 changed files with 44 additions and 11 deletions
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45
utils/hunktools/dalf.py
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@ -115,6 +115,7 @@ def read_block(infile, is_loadfile):
return None
def read_blocks(infile, is_loadfile):
result = []
block = read_block(infile, is_loadfile)
@ -140,7 +141,28 @@ def group_blocks(blocks):
current_group.append(block)
return groups
def print_hunks(hunks):
def print_data(data, items_per_line=16):
"""Do a hex dump on the specified data"""
offset = 0
length = len(data)
while offset < length:
i = 0
old_offset = offset
items = []
while offset < length and i < items_per_line:
items.append(data[offset])
offset += 1
i += 1
ascii_rep = "".join(map(lambda n: chr(n) if n >= 32 and n < 128 else '.', items))
# if there are to few items, fill the gap to ensure clean output
line = " ".join(map(lambda n: "%02x" % n, items))
line += " " + " ".join(["**"] * (items_per_line - len(items)))
print("$%06x: %s %s" % (old_offset, line, ascii_rep))
def print_hunks(hunks, disassembled):
for i, hunk in enumerate(hunks):
block = hunk[0]
if block[0] == 'NAME':
@ -150,9 +172,16 @@ def print_hunks(hunks):
elif block[0] == 'CODE':
print("%d: '%s', size = %d" % (i, block[0], len(block[1])))
code = block[1]
if disassembled:
disassemble(code)
else:
print_data(code)
elif block[0] == 'DATA':
print("%d: '%s', size = %d" % (i, block[0], len(block[1])))
print_data(block[1])
else:
print("%d: '%s'" % (i, block[0]))
print("")
def dump_code_hunks(hunkfile, hunks):
@ -170,7 +199,8 @@ def print_overview(hunks):
print(" %s" % block[0])
print(" END")
def parse_hunkfile(hunkfile, disassemble, dump_code):
def parse_hunkfile(hunkfile, disassembled, dump_code, detail):
"""Top level parsing function"""
with open(hunkfile, 'rb') as infile:
id = infile.read(4)
@ -206,8 +236,8 @@ def parse_hunkfile(hunkfile, disassemble, dump_code):
blocks = read_blocks(infile, is_loadfile)
hunks = group_blocks(blocks)
if disassemble:
print_hunks(hunks)
if disassembled or detail:
print_hunks(hunks, disassembled)
else:
print_overview(hunks)
@ -220,8 +250,11 @@ if __name__ == '__main__':
parser.add_argument('hunkfile', help="hunk format file")
parser.add_argument('--disassemble', action="store_true", default=False,
help="show disassembly")
parser.add_argument('--detail', action="store_true", default=False,
help="show data")
parser.add_argument('--dump_code', action="store_true", default=False,
help="dump each code hunk to a separate file")
help="extracts and dumps each code hunk to a separate file")
args = parser.parse_args()
parse_hunkfile(args.hunkfile, disassemble=args.disassemble, dump_code=args.dump_code)
parse_hunkfile(args.hunkfile, disassembled=args.disassemble, dump_code=args.dump_code,
detail=args.detail)