-
Notifications
You must be signed in to change notification settings - Fork 1
/
test.js
134 lines (125 loc) · 3.11 KB
/
test.js
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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
function read_bin(offset, len) {
return wasm.memory.buffer.slice(offset, offset + len)
}
function read_string(offset, len) {
let dec = new TextDecoder()
let buf = read_bin(offset, len)
return dec.decode(buf)
}
let importObject = {
env: {
logNumber: console.log,
log: (offset, len) => {
console.log(read_string(offset, len))
}
}
}
fetch('boot.wasm').then(response =>
response.arrayBuffer()
).then(bytes =>
WebAssembly.instantiate(bytes, importObject)
).then(obj => {
window.wasm = obj.instance.exports
console.groupCollapsed()
wasm.init()
console.groupEnd()
console.groupCollapsed()
wasm.init()
console.groupEnd()
console.group()
wasm.init()
console.groupEnd()
}
)
var bits = 1
document.write('<button>do it!</button>')
document.getElementsByTagName("button")[0].addEventListener("click", () => {
console.log(++bits, max = Math.pow(2, bits))
for (let i = -8; i < 8; i++) {
let j = max + i
console.log(j === wasm.echo(j))
}
})
function memoryIndex() {
let mem = new Int32Array(wasm.memory.buffer)
let mindex = wasm.get_mindex()
let mindexLen = mem[mindex / 4 - 1]
let id = 8
let index = []
for (let i = mindex; i < mindex + mindexLen; i += 8) {
let item = {}
index.push(item)
item.offset = mem[i / 4]
item.len = mem[item.offset / 4 - 1]
item.datatype = mem[i / 4 + 1] / Math.pow(2, 16)
item.used = item.datatype > 255
item.datatype %= 256
try {
item.value = getValue(id++)
} catch (error) {
item.value = undefined
}
}
console.table(index)
}
function getValue(id) {
if (id < 8) {
return [null, false, 0, "", undefined, true][id]
}
let mem = new Int32Array(wasm.memory.buffer)
let mindex = wasm.get_mindex()
id -= 8
let i = mindex + 8 * id
let item = {}
item.offset = mem[i / 4]
item.len = mem[item.offset / 4 - 1]
item.datatype = (mem[i / 4 + 1] / Math.pow(2, 16)) % 256
switch (item.datatype) {
case 0:
return null
case 1:
return undefined
case 2:
return wasm.load_f64(item.offset)
case 3:
return read_string(item.offset, item.len)
case 4:
let ar = []
for (let i = item.offset; i < item.offset + item.len; i += 4) {
ar.push(getValue(mem[i / 4]))
}
return ar
case 5:
let obj = {}
for (let i = item.offset; i < item.offset + item.len; i += 8) {
obj[getValue(mem[i / 4])] = getValue(mem[i / 4 + 1])
}
return obj
case 6:
return read_bin(item.offset, item.len)
default:
return undefined
}
}
function validateAlloc() {
let mem = new Int32Array(wasm.memory.buffer)
let allocs = []
let offset = 0
let space = mem[offset / 4]
while (offset < mem.length - 1) {
let alloc = {}
allocs.push(alloc)
alloc.free = space
offset += space
if (space !== mem[offset / 4]) console.error("memory error at", offset)
offset += 4
space = mem[offset / 4]
alloc.offset = offset + 4
alloc.used = space
offset += space + 4
offset = Math.floor(offset / 8) * 8 + 8
space = mem[offset / 4]
space = Math.floor(space / 8) * 8
}
console.table(allocs)
}