108 lines
3.9 KiB
C++
108 lines
3.9 KiB
C++
#ifndef __JABYENGINE_IOPORT_HPP__
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#define __JABYENGINE_IOPORT_HPP__
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#include "../../Auxiliary/complex_bitmap.hpp"
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namespace JabyEngine {
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template<typename T>
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struct NormalValue {
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typedef T Value;
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typedef T NakedValue;
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};
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template<typename T>
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struct VolatileValue {
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typedef volatile T Value;
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typedef T NakedValue;
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};
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template<typename T>
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struct VolatilePOD {
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volatile T raw;
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constexpr T read() const {
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return this->raw;
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}
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constexpr void write(T value) {
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this->raw = value;
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}
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};
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// For use with ComplexBitMaps or what else satisfies this API
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template<typename T>
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struct VolatileBitMapPOD {
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typedef typename T::UnderlyingType Raw;
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VolatilePOD<Raw> pod;
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constexpr Raw read_raw() const {
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return this->pod.read();
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}
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constexpr T read() const {
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return T{this->pod.read()};
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}
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constexpr Raw read(const BitRange<Raw>& range) const {
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return VolatileBitMapPOD<T>::read().get_value(range);
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}
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constexpr void write_raw(Raw value) {
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this->pod.write(value);
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}
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constexpr void write(const T& value) {
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this->pod.write(static_cast<Raw>(value));
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}
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constexpr void write(const BitRangeValue<Raw>& value) {
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VolatileBitMapPOD<T>::write(T{T::with(value)});
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}
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};
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struct __no_align ubus32_t {
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typedef ComplexBitMap<uint16_t> Base16;
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VolatileBitMapPOD<Base16> low;
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VolatileBitMapPOD<Base16> high;
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constexpr ubus32_t(uint32_t value) {
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*this = value;
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}
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constexpr void write(uint32_t value) {
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*this = value;
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}
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constexpr operator uint32_t() const {
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return ((this->high.read_raw() << 16) | this->low.read_raw());
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}
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constexpr ubus32_t& operator=(uint32_t value) {
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this->low.write_raw(value & 0xFFFF);
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this->high.write_raw(value >> 16);
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return *this;
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}
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};
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static constexpr uintptr_t IO_Base_Mask = 0xF0000000;
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static constexpr uintptr_t IO_Base_Adr = 0x10000000;
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#define __io_port_adr(adr) (IO_Base_Adr + (adr & ~IO_Base_Mask))
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#define __cast_io_adr_with_type(cv, type, name, adr) static __always_inline cv auto& name = *reinterpret_cast<type*>(__io_port_adr(adr))
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#define __declare_io_port_global(type, name, adr) __cast_io_adr_with_type(, VolatileBitMapPOD<type>, name, adr)
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#define __declare_io_port_global_const(type, name, adr) __cast_io_adr_with_type(const, VolatileBitMapPOD<type>, name, adr)
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#define __declare_io_port_global_simple(type, name, adr) __cast_io_adr_with_type(, VolatilePOD<type>, name, adr)
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#define __declare_io_port_global_const_simple(type, name, adr) __cast_io_adr_with_type(const, VolatilePOD<type>, name, adr)
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#define __declare_io_port_member(type, name, adr) __cast_io_adr_with_type(inline, VolatileBitMapPOD<type>, name, adr)
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#define __declare_io_port_member_const(type, name, adr) __cast_io_adr_with_type(const inline, VolatileBitMapPOD<type>, name, adr)
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#define __declare_io_port_member_simple(type, name, adr) __cast_io_adr_with_type(inline, VolatilePOD<type>, name, adr)
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#define __declare_io_port_member_const_simple(type, name, adr) __cast_io_adr_with_type(const inline, VolatilePOD<type>, name, adr)
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#define __declare_io_port_global_array(type, name, adr, size) static __always_inline auto& name = reinterpret_cast<type(&)[size]>(*reinterpret_cast<type*>(__io_port_adr(adr)))
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#define __declare_io_port_global_struct(type, name, adr) static __always_inline auto& name = *reinterpret_cast<type*>(__io_port_adr(adr))
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}
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#endif //!__JABYENGINE_IOPORT_HPP__
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