mirror of
https://github.com/libretro/bsnes-libretro.git
synced 2024-11-30 04:20:32 +00:00
ac2d0ba1cf
byuu says:
Changelog:
- 68K: fixed bug that affected BSR return address
- VDP: added very preliminary emulation of planes A, B, W (W is
entirely broken though)
- VDP: added command/address stuff so you can write to VRAM, CRAM,
VSRAM
- VDP: added VRAM fill DMA
I would be really surprised if any commercial games showed anything at
all, so I'd probably recommend against wasting your time trying, unless
you're really bored :P
Also, I wanted to add: I am accepting patches\! So if anyone wants to
look over the 68K core for bugs, that would save me untold amounts of
time in the near future :D
269 lines
11 KiB
C++
269 lines
11 KiB
C++
#pragma once
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#include <nall/serializer.hpp>
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#include <nall/traits.hpp>
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namespace nall {
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struct Boolean {
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inline Boolean() : data(false) {}
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template<typename T> inline Boolean(const T& value) : data(value) {}
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inline operator bool() const { return data; }
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template<typename T> inline auto& operator=(const T& value) { data = value; return *this; }
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inline auto flip() { return data ^= 1; }
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inline auto raise() { return data == 0 ? data = 1, true : false; }
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inline auto lower() { return data == 1 ? data = 0, true : false; }
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inline auto serialize(serializer& s) { s(data); }
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private:
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bool data;
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};
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template<uint Bits> struct Natural {
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using type =
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type_if<expression<Bits <= 8>, uint8_t,
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type_if<expression<Bits <= 16>, uint16_t,
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type_if<expression<Bits <= 32>, uint32_t,
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type_if<expression<Bits <= 64>, uint64_t,
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void>>>>;
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enum : type { Mask = ~0ull >> (64 - Bits) };
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inline Natural() : data(0) {}
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template<typename T> inline Natural(const T& value) { set(value); }
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inline operator type() const { return data; }
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template<typename T> inline auto& operator=(const T& value) { set(value); return *this; }
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inline auto operator++(int) { type value = data; set(data + 1); return value; }
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inline auto operator--(int) { type value = data; set(data - 1); return value; }
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inline auto& operator++() { set(data + 1); return *this; }
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inline auto& operator--() { set(data - 1); return *this; }
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inline auto& operator &=(const type value) { set(data & value); return *this; }
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inline auto& operator |=(const type value) { set(data | value); return *this; }
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inline auto& operator ^=(const type value) { set(data ^ value); return *this; }
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inline auto& operator<<=(const type value) { set(data << value); return *this; }
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inline auto& operator>>=(const type value) { set(data >> value); return *this; }
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inline auto& operator +=(const type value) { set(data + value); return *this; }
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inline auto& operator -=(const type value) { set(data - value); return *this; }
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inline auto& operator *=(const type value) { set(data * value); return *this; }
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inline auto& operator /=(const type value) { set(data / value); return *this; }
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inline auto& operator %=(const type value) { set(data % value); return *this; }
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inline auto serialize(serializer& s) { s(data); }
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struct Reference {
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inline Reference(Natural& source, uint lo, uint hi) : source(source), Lo(lo), Hi(hi) {}
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inline auto& operator=(Reference& source) { return set(source.get()); }
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inline auto get() const -> type {
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const type RangeBits = Hi - Lo + 1;
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const type RangeMask = (((1ull << RangeBits) - 1) << Lo) & Mask;
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return (source & RangeMask) >> Lo;
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}
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inline auto& set(const type value) {
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const type RangeBits = Hi - Lo + 1;
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const type RangeMask = (((1ull << RangeBits) - 1) << Lo) & Mask;
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source = (source & ~RangeMask) | ((value << Lo) & RangeMask);
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return *this;
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}
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inline operator type() const { return get(); }
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inline auto& operator =(const type value) { return set( value); }
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inline auto& operator &=(const type value) { return set(get() & value); }
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inline auto& operator |=(const type value) { return set(get() | value); }
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inline auto& operator ^=(const type value) { return set(get() ^ value); }
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inline auto& operator<<=(const type value) { return set(get() << value); }
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inline auto& operator>>=(const type value) { return set(get() >> value); }
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inline auto& operator +=(const type value) { return set(get() + value); }
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inline auto& operator -=(const type value) { return set(get() - value); }
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inline auto& operator *=(const type value) { return set(get() * value); }
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inline auto& operator /=(const type value) { return set(get() / value); }
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inline auto& operator %=(const type value) { return set(get() % value); }
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inline auto& operator++(int) { auto value = get(); set(value + 1); return value; }
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inline auto& operator--(int) { auto value = get(); set(value - 1); return value; }
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inline auto& operator++() { return set(get() + 1); }
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inline auto& operator--() { return set(get() - 1); }
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private:
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Natural& source;
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const type Lo;
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const type Hi;
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};
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inline auto bits(uint lo, uint hi) -> Reference { return {*this, lo < hi ? lo : hi, hi > lo ? hi : lo}; }
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inline auto bit(uint index) -> Reference { return {*this, index, index}; }
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inline auto byte(uint index) -> Reference { return {*this, index * 8 + 0, index * 8 + 7}; }
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inline auto bits(uint lo, uint hi) const -> const Reference { return {(Natural&)*this, lo < hi ? lo : hi, hi > lo ? hi : lo}; }
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inline auto bit(uint index) const -> const Reference { return {(Natural&)*this, index, index}; }
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inline auto byte(uint index) const -> const Reference { return {(Natural&)*this, index * 8 + 0, index * 8 + 7}; }
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inline auto clamp(uint bits) -> uintmax {
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const uintmax b = 1ull << (bits - 1);
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const uintmax m = b * 2 - 1;
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return data < m ? data : m;
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}
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inline auto clip(uint bits) -> uintmax {
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const uintmax b = 1ull << (bits - 1);
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const uintmax m = b * 2 - 1;
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return data & m;
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}
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private:
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auto set(type value) -> void {
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data = value & Mask;
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}
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type data;
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};
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template<uint Bits> struct Integer {
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using type =
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type_if<expression<Bits <= 8>, int8_t,
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type_if<expression<Bits <= 16>, int16_t,
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type_if<expression<Bits <= 32>, int32_t,
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type_if<expression<Bits <= 64>, int64_t,
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void>>>>;
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using utype = typename Natural<Bits>::type;
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enum : utype { Mask = ~0ull >> (64 - Bits), Sign = 1ull << (Bits - 1) };
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inline Integer() : data(0) {}
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template<typename T> inline Integer(const T& value) { set(value); }
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inline operator type() const { return data; }
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template<typename T> inline auto& operator=(const T& value) { set(value); return *this; }
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inline auto operator++(int) { type value = data; set(data + 1); return value; }
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inline auto operator--(int) { type value = data; set(data - 1); return value; }
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inline auto& operator++() { set(data + 1); return *this; }
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inline auto& operator--() { set(data - 1); return *this; }
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inline auto& operator &=(const type value) { set(data & value); return *this; }
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inline auto& operator |=(const type value) { set(data | value); return *this; }
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inline auto& operator ^=(const type value) { set(data ^ value); return *this; }
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inline auto& operator<<=(const type value) { set(data << value); return *this; }
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inline auto& operator>>=(const type value) { set(data >> value); return *this; }
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inline auto& operator +=(const type value) { set(data + value); return *this; }
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inline auto& operator -=(const type value) { set(data - value); return *this; }
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inline auto& operator *=(const type value) { set(data * value); return *this; }
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inline auto& operator /=(const type value) { set(data / value); return *this; }
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inline auto& operator %=(const type value) { set(data % value); return *this; }
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inline auto serialize(serializer& s) { s(data); }
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struct Reference {
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inline Reference(Integer& source, uint lo, uint hi) : source(source), Lo(lo), Hi(hi) {}
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inline auto& operator=(const Reference& source) { return set(source.get()); }
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inline auto get() const -> utype {
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const type RangeBits = Hi - Lo + 1;
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const type RangeMask = (((1ull << RangeBits) - 1) << Lo) & Mask;
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return ((utype)source & RangeMask) >> Lo;
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}
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inline auto& set(const utype value) {
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const type RangeBits = Hi - Lo + 1;
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const type RangeMask = (((1ull << RangeBits) - 1) << Lo) & Mask;
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source = ((utype)source & ~RangeMask) | ((value << Lo) & RangeMask);
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return *this;
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}
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inline operator utype() const { return get(); }
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inline auto& operator =(const utype value) { return set( value); }
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inline auto& operator &=(const utype value) { return set(get() & value); }
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inline auto& operator |=(const utype value) { return set(get() | value); }
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inline auto& operator ^=(const utype value) { return set(get() ^ value); }
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inline auto& operator<<=(const utype value) { return set(get() << value); }
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inline auto& operator>>=(const utype value) { return set(get() >> value); }
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inline auto& operator +=(const utype value) { return set(get() + value); }
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inline auto& operator -=(const utype value) { return set(get() - value); }
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inline auto& operator *=(const utype value) { return set(get() * value); }
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inline auto& operator /=(const utype value) { return set(get() / value); }
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inline auto& operator %=(const utype value) { return set(get() % value); }
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inline auto& operator++(int) { auto value = get(); set(value + 1); return value; }
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inline auto& operator--(int) { auto value = get(); set(value - 1); return value; }
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inline auto& operator++() { return set(get() + 1); }
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inline auto& operator--() { return set(get() - 1); }
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private:
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Integer& source;
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const uint Lo;
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const uint Hi;
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};
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inline auto bits(uint lo, uint hi) -> Reference { return {*this, lo < hi ? lo : hi, hi > lo ? hi : lo}; }
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inline auto bit(uint index) -> Reference { return {*this, index, index}; }
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inline auto byte(uint index) -> Reference { return {*this, index * 8 + 0, index * 8 + 7}; }
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inline auto bits(uint lo, uint hi) const -> const Reference { return {(Integer&)*this, lo < hi ? lo : hi, hi > lo ? hi : lo}; }
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inline auto bit(uint index) const -> const Reference { return {(Integer&)*this, index, index}; }
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inline auto byte(uint index) const -> const Reference { return {(Integer&)*this, index * 8 + 0, index * 8 + 7}; }
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inline auto clamp(uint bits) -> intmax {
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const intmax b = 1ull << (bits - 1);
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const intmax m = b - 1;
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return data > m ? m : data < -b ? -b : data;
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}
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inline auto clip(uint bits) -> intmax {
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const uintmax b = 1ull << (bits - 1);
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const uintmax m = b * 2 - 1;
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return ((data & m) ^ b) - b;
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}
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private:
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auto set(type value) -> void {
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data = ((value & Mask) ^ Sign) - Sign;
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}
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type data;
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};
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template<uint Bits> struct Real {
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using type =
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type_if<expression<Bits == 32>, float32_t,
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type_if<expression<Bits == 64>, float64_t,
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//type_if<expression<Bits == 80>, float80_t,
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void>>;
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inline Real() : data(0.0) {}
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template<typename T> inline Real(const T& value) : data((type)value) {}
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inline operator type() const { return data; }
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template<typename T> inline auto& operator=(const T& value) { data = (type)value; return *this; }
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inline auto operator++(int) { type value = data; ++data; return value; }
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inline auto operator--(int) { type value = data; --data; return value; }
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inline auto& operator++() { data++; return *this; }
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inline auto& operator--() { data--; return *this; }
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inline auto& operator+=(const type value) { data = data + value; return *this; }
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inline auto& operator-=(const type value) { data = data - value; return *this; }
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inline auto& operator*=(const type value) { data = data * value; return *this; }
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inline auto& operator/=(const type value) { data = data / value; return *this; }
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inline auto& operator%=(const type value) { data = data % value; return *this; }
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inline auto serialize(serializer& s) { s(data); }
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private:
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type data;
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};
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using boolean = nall::Boolean;
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using natural = nall::Natural<sizeof(uint) * 8>;
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using integer = nall::Integer<sizeof(int) * 8>;
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using real = nall::Real<sizeof(double) * 8>;
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}
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