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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
// Shell integration.
if (typeof console === 'undefined') {
console = { log: print };
}
var tempRet0;
var binary;
if (typeof process === 'object' && typeof require === 'function' /* node.js detection */) {
var args = process.argv.slice(2);
binary = require('fs').readFileSync(args[0]);
if (!binary.buffer) binary = new Uint8Array(binary);
} else {
var args;
if (typeof scriptArgs != 'undefined') {
args = scriptArgs;
} else if (typeof arguments != 'undefined') {
args = arguments;
}
if (typeof readbuffer === 'function') {
binary = new Uint8Array(readbuffer(args[0]));
} else {
binary = read(args[0], 'binary');
}
}
// Utilities.
function assert(x, y) {
if (!x) throw (y || 'assertion failed');// + new Error().stack;
}
// Deterministic randomness.
var detrand = (function() {
var hash = 5381; // TODO DET_RAND_SEED;
var x = 0;
return function() {
hash = (((hash << 5) + hash) ^ (x & 0xff)) >>> 0;
x = (x + 1) % 256;
return (hash % 256) / 256;
};
})();
// Fuzz integration.
function logValue(x, y) {
if (typeof y !== 'undefined') {
console.log('[LoggingExternalInterface logging ' + x + ' ' + y + ']');
} else {
console.log('[LoggingExternalInterface logging ' + x + ']');
}
}
// Set up the imports.
var imports = {
'fuzzing-support': {
'log-i32': logValue,
'log-i64': logValue,
'log-f32': logValue,
'log-f64': logValue,
},
'env': {
'setTempRet0': function(x) { tempRet0 = x },
'getTempRet0': function() { return tempRet0 },
},
};
// If Tags are available, add the import j2wasm expects.
if (typeof WebAssembly.Tag !== 'undefined') {
imports['imports'] = {
'j2wasm.ExceptionUtils.tag': new WebAssembly.Tag({
'parameters': ['externref']
}),
};
}
// Create the wasm.
var module = new WebAssembly.Module(binary);
var instance;
try {
instance = new WebAssembly.Instance(module, imports);
} catch (e) {
console.log('exception: failed to instantiate module');
quit();
}
// Handle the exports.
var exports = instance.exports;
var view;
// Recreate the view. This is important both initially and after a growth.
function refreshView() {
if (exports.memory) {
view = new Int32Array(exports.memory.buffer);
}
}
// Run the wasm.
var sortedExports = [];
for (var e in exports) {
sortedExports.push(e);
}
sortedExports.sort();
sortedExports.forEach(function(e) {
if (typeof exports[e] !== 'function') return;
try {
console.log('[fuzz-exec] calling ' + e);
var result = exports[e]();
if (typeof result !== 'undefined') {
console.log('[fuzz-exec] note result: $' + e + ' => ' + result);
}
} catch (e) {
console.log('exception!');// + [e, e.stack]);
}
});
|
