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/*
* 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 "asmjs/shared-constants.h"
#include "wasm.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;
extern cashew::IString SCRATCH_STORE_I32;
extern cashew::IString SCRATCH_LOAD_I64;
extern cashew::IString SCRATCH_STORE_I64;
extern cashew::IString SCRATCH_LOAD_F32;
extern cashew::IString SCRATCH_STORE_F32;
extern cashew::IString SCRATCH_LOAD_F64;
extern cashew::IString 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, Type params, Type results) {
if (wasm->getFunctionOrNull(name)) {
return;
}
if (specific.is() && name != specific) {
return;
}
auto func = make_unique<Function>();
func->name = name;
func->sig = Signature(params, results);
func->module = ENV;
func->base = name;
wasm->addFunction(std::move(func));
};
ensureImport(SCRATCH_LOAD_I32, {Type::i32}, Type::i32);
ensureImport(SCRATCH_STORE_I32, {Type::i32, Type::i32}, Type::none);
ensureImport(SCRATCH_LOAD_I64, {}, Type::i64);
ensureImport(SCRATCH_STORE_I64, {Type::i64}, Type::none);
ensureImport(SCRATCH_LOAD_F32, {}, Type::f32);
ensureImport(SCRATCH_STORE_F32, {Type::f32}, Type::none);
ensureImport(SCRATCH_LOAD_F64, {}, Type::f64);
ensureImport(SCRATCH_STORE_F64, {Type::f64}, Type::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
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