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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/wasm/wasm-opcodes.h"
#include <array>
#include "src/codegen/signature.h"
#include "src/wasm/wasm-features.h"
#include "src/wasm/wasm-module.h"
#include "src/wasm/wasm-opcodes-inl.h"
namespace v8 {
namespace internal {
namespace wasm {
std::ostream& operator<<(std::ostream& os, const FunctionSig& sig) {
if (sig.return_count() == 0) os << "v";
for (auto ret : sig.returns()) {
os << ret.short_name();
}
os << "_";
if (sig.parameter_count() == 0) os << "v";
for (auto param : sig.parameters()) {
os << param.short_name();
}
return os;
}
// TODO(7748): Once we have a story for JS interaction of structs/arrays, this
// function should become independent of module. Remove 'module' parameter in
// this function as well as all transitive callees that no longer need it
// (In essence, revert
// https://chromium-review.googlesource.com/c/v8/v8/+/2413251).
bool IsJSCompatibleSignature(const FunctionSig* sig, const WasmModule* module,
const WasmFeatures& enabled_features) {
for (auto type : sig->all()) {
// Structs and arrays may only be passed via externref.
// Rtts are implicit and can not be used explicitly.
if (type == kWasmS128 || type.is_rtt() ||
(type.has_index() && !module->has_signature(type.ref_index()))) {
return false;
}
if (type.is_object_reference()) {
switch (type.heap_type().representation()) {
case HeapType::kStringViewWtf8:
case HeapType::kStringViewWtf16:
case HeapType::kStringViewIter:
case HeapType::kNone:
case HeapType::kNoFunc:
case HeapType::kNoExtern:
case HeapType::kAny:
case HeapType::kI31:
return false;
default:
break;
}
}
}
return true;
}
// Define constexpr arrays.
constexpr uint8_t LoadType::kLoadSizeLog2[];
constexpr ValueType LoadType::kValueType[];
constexpr MachineType LoadType::kMemType[];
constexpr uint8_t StoreType::kStoreSizeLog2[];
constexpr ValueType StoreType::kValueType[];
constexpr MachineRepresentation StoreType::kMemRep[];
} // namespace wasm
} // namespace internal
} // namespace v8
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