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Some constexpr improvements in low level classes.

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Signed-off-by: Adrian Conlon <adrian.conlon@gmail.com>
This commit is contained in:
Adrian Conlon 2021-10-24 11:12:23 +01:00
parent f85fec3c81
commit 03b536838b
6 changed files with 29 additions and 29 deletions
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22
M6502/inc/mos6502.h
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@ -26,7 +26,7 @@ namespace EightBit {
CF = Bit0, // Carry
};
MOS6502(Bus& bus);
MOS6502(Bus& bus) noexcept;
Signal<MOS6502> ExecutingInstruction;
Signal<MOS6502> ExecutedInstruction;
@ -111,29 +111,29 @@ namespace EightBit {
// Flag adjustment
void adjustZero(const uint8_t datum) noexcept { P() = clearBit(P(), ZF, datum); }
void adjustNegative(const uint8_t datum) noexcept { P() = setBit(P(), NF, datum & NF); }
constexpr void adjustZero(const uint8_t datum) noexcept { P() = clearBit(P(), ZF, datum); }
constexpr void adjustNegative(const uint8_t datum) noexcept { P() = setBit(P(), NF, datum & NF); }
void adjustNZ(const uint8_t datum) noexcept {
constexpr void adjustNZ(const uint8_t datum) noexcept {
adjustZero(datum);
adjustNegative(datum);
}
// Flag checking
[[nodiscard]] auto interruptMasked() const noexcept { return P() & IF; }
[[nodiscard]] auto decimal() const noexcept { return P() & DF; }
[[nodiscard]] constexpr auto interruptMasked() const noexcept { return P() & IF; }
[[nodiscard]] constexpr auto decimal() const noexcept { return P() & DF; }
[[nodiscard]] auto negative() const noexcept { return P() & NF; }
[[nodiscard]] auto zero() const noexcept { return P() & ZF; }
[[nodiscard]] auto overflow() const noexcept { return P() & VF; }
[[nodiscard]] auto carry() const noexcept { return P() & CF; }
[[nodiscard]] constexpr auto negative() const noexcept { return P() & NF; }
[[nodiscard]] constexpr auto zero() const noexcept { return P() & ZF; }
[[nodiscard]] constexpr auto overflow() const noexcept { return P() & VF; }
[[nodiscard]] constexpr auto carry() const noexcept { return P() & CF; }
// Miscellaneous
void branch(int condition);
[[nodiscard]] auto through(const uint8_t data) noexcept {
[[nodiscard]] constexpr auto through(const uint8_t data) noexcept {
adjustNZ(data);
return data;
}

2
M6502/src/mos6502.cpp
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@ -1,7 +1,7 @@
#include "stdafx.h"
#include "../inc/mos6502.h"
EightBit::MOS6502::MOS6502(Bus& bus)
EightBit::MOS6502::MOS6502(Bus& bus) noexcept
: LittleEndianProcessor(bus) {
RaisedPOWER.connect([this](EventArgs) {
X() = Bit7;

2
Z80/inc/Z80.h
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@ -42,7 +42,7 @@ namespace EightBit {
bool high : 1;
uint8_t variable : 7;
refresh_t(const uint8_t value) noexcept
constexpr refresh_t(const uint8_t value) noexcept
: high(!!(value & Bit7)),
variable(value & Mask7)
{ }

4
inc/Bus.h
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@ -20,8 +20,8 @@ namespace EightBit {
Signal<EventArgs> ReadingByte;
Signal<EventArgs> ReadByte;
[[nodiscard]] auto ADDRESS() const noexcept { return m_address; }
[[nodiscard]] auto& ADDRESS() noexcept { return m_address; }
[[nodiscard]] constexpr auto ADDRESS() const noexcept { return m_address; }
[[nodiscard]] constexpr auto& ADDRESS() noexcept { return m_address; }
[[nodiscard]] constexpr auto DATA() const noexcept { return m_data; }
[[nodiscard]] constexpr auto& DATA() noexcept { return m_data; }

2
inc/Processor.h
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@ -74,7 +74,7 @@ namespace EightBit {
virtual void pushWord(register16_t value) = 0;
[[nodiscard]] virtual register16_t popWord() = 0;
register16_t getWord(register16_t address);
[[nodiscard]] register16_t getWord(register16_t address);
void setWord(register16_t address, register16_t value);
void jump(const register16_t destination) noexcept;

26
inc/Register.h
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@ -33,57 +33,57 @@ namespace EightBit {
};
uint16_t word;
register16_t() noexcept : word(0) {}
register16_t(const uint16_t w) noexcept : word(w) {}
register16_t(const uint8_t l, const uint8_t h) noexcept : low(l), high(h) {}
constexpr register16_t() noexcept : word(0) {}
constexpr register16_t(const uint16_t w) noexcept : word(w) {}
constexpr register16_t(const uint8_t l, const uint8_t h) noexcept : low(l), high(h) {}
auto& operator++() noexcept {
constexpr auto& operator++() noexcept {
++word;
return *this;
}
auto& operator--() noexcept {
constexpr auto& operator--() noexcept {
--word;
return *this;
}
auto operator++(int) noexcept {
constexpr auto operator++(int) noexcept {
register16_t temporary(*this);
operator++();
return temporary;
}
auto operator--(int) noexcept {
constexpr auto operator--(int) noexcept {
register16_t temporary(*this);
operator--();
return temporary;
}
auto& operator+=(const register16_t rhs) noexcept {
constexpr auto& operator+=(const register16_t rhs) noexcept {
this->word += rhs.word;
return *this;
}
auto& operator-=(const register16_t rhs) noexcept {
constexpr auto& operator-=(const register16_t rhs) noexcept {
this->word -= rhs.word;
return *this;
}
};
[[nodiscard]] inline auto operator==(const register16_t lhs, const register16_t rhs) noexcept {
[[nodiscard]] constexpr inline auto operator==(const register16_t lhs, const register16_t rhs) noexcept {
return lhs.word == rhs.word;
}
[[nodiscard]] inline auto operator!=(const register16_t lhs, const register16_t rhs) noexcept {
[[nodiscard]] constexpr inline auto operator!=(const register16_t lhs, const register16_t rhs) noexcept {
return !(lhs == rhs);
}
[[nodiscard]] inline auto operator+(register16_t lhs, const register16_t rhs) noexcept {
[[nodiscard]] constexpr inline auto operator+(register16_t lhs, const register16_t rhs) noexcept {
lhs += rhs;
return lhs;
}
[[nodiscard]] inline auto operator-(register16_t lhs, const register16_t rhs) noexcept {
[[nodiscard]] constexpr inline auto operator-(register16_t lhs, const register16_t rhs) noexcept {
lhs -= rhs;
return lhs;
}