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
|
/*
* Copyright 2015 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//
// asm2wasm console tool
//
#include "asm2wasm.h"
using namespace cashew;
using namespace wasm;
namespace wasm {
int debug = 0;
}
int main(int argc, char **argv) {
debug = getenv("ASM2WASM_DEBUG") ? getenv("ASM2WASM_DEBUG")[0] - '0' : 0;
char *infile = argv[1];
char *mappedGlobals = argc < 3 ? nullptr : argv[2];
if (debug) std::cerr << "loading '" << infile << "'...\n";
FILE *f = fopen(argv[1], "r");
assert(f);
fseek(f, 0, SEEK_END);
int size = ftell(f);
char *input = new char[size+1];
rewind(f);
int num = fread(input, 1, size, f);
// On Windows, ftell() gives the byte position (\r\n counts as two bytes), but when
// reading, fread() returns the number of characters read (\r\n is read as one char \n, and counted as one),
// so return value of fread can be less than size reported by ftell, and that is normal.
assert((num > 0 || size == 0) && num <= size);
fclose(f);
input[num] = 0;
Asm2WasmPreProcessor pre;
input = pre.process(input);
if (debug) std::cerr << "parsing...\n";
cashew::Parser<Ref, DotZeroValueBuilder> builder;
Ref asmjs = builder.parseToplevel(input);
if (debug) std::cerr << "wasming...\n";
AllocatingModule wasm;
wasm.memory.initial = wasm.memory.max = 16*1024*1024; // we would normally receive this from the compiler
Asm2WasmBuilder asm2wasm(wasm, pre.memoryGrowth);
asm2wasm.processAsm(asmjs);
if (debug) std::cerr << "optimizing...\n";
asm2wasm.optimize();
if (debug) std::cerr << "printing...\n";
std::cout << wasm;
if (mappedGlobals) {
if (debug) std::cerr << "serializing mapped globals...\n";
asm2wasm.serializeMappedGlobals(mappedGlobals);
}
if (debug) std::cerr << "done.\n";
}
|
