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// Copyright 2022 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.
#if !V8_ENABLE_WEBASSEMBLY
#error This header should only be included if WebAssembly is enabled.
#endif // !V8_ENABLE_WEBASSEMBLY
#ifndef V8_COMPILER_WASM_CALL_DESCRIPTORS_H_
#define V8_COMPILER_WASM_CALL_DESCRIPTORS_H_
#include <memory>
#include "src/common/globals.h"
namespace v8::internal {
class AccountingAllocator;
class Zone;
namespace compiler {
class CallDescriptor;
class WasmCallDescriptors {
public:
explicit WasmCallDescriptors(AccountingAllocator* allocator);
compiler::CallDescriptor* GetI64ToBigIntDescriptor(StubCallMode mode) {
return i64_to_bigint_descriptors_[static_cast<size_t>(mode)];
}
compiler::CallDescriptor* GetBigIntToI64Descriptor(StubCallMode mode,
bool needs_frame_state) {
if (needs_frame_state) {
DCHECK_EQ(mode, StubCallMode::kCallBuiltinPointer);
return bigint_to_i64_descriptor_with_framestate_;
}
return bigint_to_i64_descriptors_[static_cast<size_t>(mode)];
}
#if V8_TARGET_ARCH_32_BIT
V8_EXPORT_PRIVATE compiler::CallDescriptor* GetLoweredCallDescriptor(
const compiler::CallDescriptor* original);
#endif // V8_TARGET_ARCH_32_BIT
private:
static_assert(static_cast<int>(StubCallMode::kCallCodeObject) == 0);
static_assert(static_cast<int>(StubCallMode::kCallWasmRuntimeStub) == 1);
static_assert(static_cast<int>(StubCallMode::kCallBuiltinPointer) == 2);
static constexpr int kNumCallModes = 3;
std::unique_ptr<Zone> zone_;
compiler::CallDescriptor* i64_to_bigint_descriptors_[kNumCallModes];
compiler::CallDescriptor* bigint_to_i64_descriptors_[kNumCallModes];
compiler::CallDescriptor* bigint_to_i64_descriptor_with_framestate_;
#if V8_TARGET_ARCH_32_BIT
compiler::CallDescriptor* i32pair_to_bigint_descriptors_[kNumCallModes];
compiler::CallDescriptor* bigint_to_i32pair_descriptors_[kNumCallModes];
compiler::CallDescriptor* bigint_to_i32pair_descriptor_with_framestate_;
#endif // V8_TARGET_ARCH_32_BIT
};
} // namespace compiler
} // namespace v8::internal
#endif // V8_COMPILER_WASM_CALL_DESCRIPTORS_H_
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