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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_MC_MCINST_H
#define RCC_MC_MCINST_H
#include "rcc/MC/MCExpr.h"
#include <cstddef>
#include <cstdint>
#include <span>
#include <utility>
#include <variant>
#include <vector>
namespace rcc::mc {
class MCRegister final {
public:
constexpr MCRegister() noexcept = default;
[[nodiscard]] static constexpr MCRegister fromValue(std::uint32_t Value) noexcept {
return MCRegister(Value);
}
[[nodiscard]] constexpr std::uint32_t value() const noexcept {
return Value;
}
[[nodiscard]] constexpr bool isValid() const noexcept {
return Value != 0;
}
friend constexpr bool operator==(MCRegister Left, MCRegister Right) noexcept = default;
private:
explicit constexpr MCRegister(std::uint32_t Value) noexcept : Value(Value) {}
std::uint32_t Value = 0;
};
class MCOpcode final {
public:
constexpr MCOpcode() noexcept = default;
[[nodiscard]] static constexpr MCOpcode fromValue(std::uint32_t Value) noexcept {
return MCOpcode(Value);
}
[[nodiscard]] constexpr std::uint32_t value() const noexcept {
return Value;
}
[[nodiscard]] constexpr bool isValid() const noexcept {
return Value != 0;
}
friend constexpr bool operator==(MCOpcode Left, MCOpcode Right) noexcept = default;
private:
explicit constexpr MCOpcode(std::uint32_t Value) noexcept : Value(Value) {}
std::uint32_t Value = 0;
};
class MCOperand final {
public:
enum class Kind : std::uint8_t {
Register,
Immediate,
Float32Bits,
Float64Bits,
Expression,
};
[[nodiscard]] static MCOperand registerOperand(MCRegister Register) noexcept {
return MCOperand(Kind::Register, Register);
}
[[nodiscard]] static MCOperand immediate(std::int64_t Value) noexcept {
return MCOperand(Kind::Immediate, Value);
}
[[nodiscard]] static MCOperand float32Bits(std::uint32_t Value) noexcept {
return MCOperand(Kind::Float32Bits, Value);
}
[[nodiscard]] static MCOperand float64Bits(std::uint64_t Value) noexcept {
return MCOperand(Kind::Float64Bits, Value);
}
[[nodiscard]] static MCOperand expression(MCExprRef Value) {
return MCOperand(Kind::Expression, std::move(Value));
}
[[nodiscard]] Kind kind() const noexcept {
return OperandKind;
}
[[nodiscard]] const MCRegister *registerValue() const noexcept {
return std::get_if<MCRegister>(&Storage);
}
[[nodiscard]] const std::int64_t *immediateValue() const noexcept {
return std::get_if<std::int64_t>(&Storage);
}
[[nodiscard]] const std::uint32_t *float32BitsValue() const noexcept {
return std::get_if<std::uint32_t>(&Storage);
}
[[nodiscard]] const std::uint64_t *float64BitsValue() const noexcept {
return std::get_if<std::uint64_t>(&Storage);
}
[[nodiscard]] const MCExprRef *expressionValue() const noexcept {
return std::get_if<MCExprRef>(&Storage);
}
private:
using StorageT = std::variant<MCRegister, std::int64_t, std::uint32_t, std::uint64_t, MCExprRef>;
MCOperand(Kind OperandKind, StorageT Storage)
: OperandKind(OperandKind), Storage(std::move(Storage)) {}
Kind OperandKind;
StorageT Storage;
};
class MCInst final {
public:
explicit MCInst(MCOpcode InstructionOpcode) : InstructionOpcode(InstructionOpcode) {}
[[nodiscard]] MCOpcode opcode() const noexcept {
return InstructionOpcode;
}
void setFlags(std::uint32_t NewFlags) noexcept {
Flags = NewFlags;
}
[[nodiscard]] std::uint32_t flags() const noexcept {
return Flags;
}
void setSourceIdentity(std::uint64_t Identity) noexcept {
SourceIdentity = Identity;
}
[[nodiscard]] std::uint64_t sourceIdentity() const noexcept {
return SourceIdentity;
}
void reserveOperands(std::size_t Count) {
Operands.reserve(Count);
}
void addOperand(MCOperand Operand) {
Operands.push_back(std::move(Operand));
}
[[nodiscard]] std::span<const MCOperand> operands() const noexcept {
return Operands;
}
private:
MCOpcode InstructionOpcode;
std::uint32_t Flags = 0;
std::uint64_t SourceIdentity = 0;
std::vector<MCOperand> Operands;
};
} // namespace rcc::mc
#endif // RCC_MC_MCINST_H
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