1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
#! /usr/bin/env python
import sys
import yaml
import array
class Call(object):
def __init__(self, call):
self.func, = call
args = dict(call[self.func])
self.output = array.array("B", args.pop("output")).tostring()
self.inputs = {
name: array.array("B", args[name]).tostring()
for name in args
if not name.endswith("_length")
}
self.bind = {}
def expr(self, stream, indent=" ", level=""):
stream.write(self.func + "(\n")
for name, value in self.inputs.items():
stream.write(level + indent + name + "=")
self.bind.get(name, Literal(value)).expr(
stream, indent, level + indent
)
stream.write(",\n")
stream.write(level + ")")
class Literal(str):
def expr(self, stream, indent, level):
stream.write("\"" + self.encode("hex") + "\"")
class Slice(object):
def __init__(self, thing, start, end):
self.thing = thing
self.start = start
self.end = end
def expr(self, stream, indent=" ", level=""):
self.thing.expr(stream, indent, level)
stream.write("[%d:%d]" % (self.start, self.end))
class Concat(list):
def expr(self, stream, indent=" ", level=""):
stream.write("concat(\n")
for thing in self:
stream.write(level + indent)
thing.expr(stream, indent, level + indent)
stream.write(",\n")
stream.write(level + ")")
calls = [Call(c) for c in yaml.load(sys.stdin)]
outputs = {}
for call in calls:
for i in range(8, len(call.output)):
outputs.setdefault(call.output[i - 8: i], []).append(call)
for call in calls:
for name, value in call.inputs.items():
for bind in outputs.get(value[:8], ()):
if value == bind.output:
call.bind[name] = bind
else:
for end in range(len(value), len(bind.output) + 1):
start = end - len(value)
if value == bind.output[start:end]:
call.bind[name] = Slice(bind, start, end)
if not name in call.bind:
i = 0
j = 1
k = 0
concat = Concat()
while i < len(value):
for bind in outputs.get(value[i:i+8], ()):
if value[i:].startswith(bind.output):
if k != i:
concat.append(Literal(value[k:i]))
concat.append(bind)
j = len(bind.output)
k = i + j
break
i += j
j = 1
if concat:
if k != i:
concat.append(Literal(value[k:i]))
call.bind[name] = concat
for call in calls:
if call.func.startswith("h"):
sys.stdout.write("\"" + call.output.encode("hex") + "\" = ")
call.expr(sys.stdout)
sys.stdout.write("\n")
|
