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
|
/*
* Copyright 2018 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.
*/
#ifndef wasm_abi_abi_h
#define wasm_abi_abi_h
#include "wasm.h"
#include "asmjs/shared-constants.h"
namespace wasm {
namespace ABI {
enum class LegalizationLevel {
Full = 0,
Minimal = 1
};
inline std::string getLegalizationPass(LegalizationLevel level) {
if (level == LegalizationLevel::Full) {
return "legalize-js-interface";
} else {
return "legalize-js-interface-minimally";
}
}
namespace wasm2js {
extern cashew::IString SCRATCH_LOAD_I32,
SCRATCH_STORE_I32,
SCRATCH_LOAD_I64,
SCRATCH_STORE_I64,
SCRATCH_LOAD_F32,
SCRATCH_STORE_F32,
SCRATCH_LOAD_F64,
SCRATCH_STORE_F64;
// The wasm2js scratch memory helpers let us read and write to scratch memory
// for purposes of implementing things like reinterpret, etc.
// The optional "specific" parameter is a specific function we want. If not
// provided, we create them all.
inline void ensureScratchMemoryHelpers(Module* wasm, cashew::IString specific = cashew::IString()) {
auto ensureImport = [&](Name name, const std::vector<Type> params, Type result) {
if (wasm->getFunctionOrNull(name)) return;
if (specific.is() && name != specific) return;
auto func = make_unique<Function>();
func->name = name;
func->params = params;
func->result = result;
func->module = ENV;
func->base = name;
wasm->addFunction(std::move(func));
};
ensureImport(SCRATCH_LOAD_I32, { i32 }, i32);
ensureImport(SCRATCH_STORE_I32, { i32, i32 }, none);
ensureImport(SCRATCH_LOAD_I64, {}, i64);
ensureImport(SCRATCH_STORE_I64, { i64 }, none);
ensureImport(SCRATCH_LOAD_F32, {}, f32);
ensureImport(SCRATCH_STORE_F32, { f32 }, none);
ensureImport(SCRATCH_LOAD_F64, {}, f64);
ensureImport(SCRATCH_STORE_F64, { f64 }, none);
}
inline bool isScratchMemoryHelper(cashew::IString name) {
return name == SCRATCH_LOAD_I32 ||
name == SCRATCH_STORE_I32 ||
name == SCRATCH_LOAD_I64 ||
name == SCRATCH_STORE_I64 ||
name == SCRATCH_LOAD_F32 ||
name == SCRATCH_STORE_F32 ||
name == SCRATCH_LOAD_F64 ||
name == SCRATCH_STORE_F64;
}
} // namespace wasm2js
} // namespace ABI
} // namespace wasm
#endif // wasm_abi_abi_h
|
