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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef jit_ABIFunctionType_h
#define jit_ABIFunctionType_h
#include <initializer_list>
#include <stdint.h>
#include "jit/ABIFunctionTypeGenerated.h"
namespace js {
namespace jit {
enum class ABIType {
// A pointer sized integer
General = 0x1,
// A 32-bit integer
Int32 = 0x2,
// A 64-bit integer
Int64 = 0x3,
// A 32-bit floating point number
Float32 = 0x4,
// A 64-bit floating point number
Float64 = 0x5
};
const size_t ABITypeArgShift = 0x3;
const size_t ABITypeArgMask = (1 << ABITypeArgShift) - 1;
namespace detail {
static constexpr uint64_t MakeABIFunctionType(
ABIType ret, std::initializer_list<ABIType> args) {
uint64_t abiType = 0;
for (auto arg : args) {
abiType <<= ABITypeArgShift;
abiType |= (uint64_t)arg;
}
abiType <<= ABITypeArgShift;
abiType |= (uint64_t)ret;
return abiType;
}
} // namespace detail
enum ABIFunctionType : uint64_t {
// The enum must be explicitly typed to avoid UB: some validly constructed
// members are larger than any explicitly declared members.
ABI_FUNCTION_TYPE_ENUM
};
static constexpr ABIFunctionType MakeABIFunctionType(
ABIType ret, std::initializer_list<ABIType> args) {
return ABIFunctionType(detail::MakeABIFunctionType(ret, args));
}
} // namespace jit
} // namespace js
#endif /* jit_ABIFunctionType_h */
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