90 lines
3.5 KiB
C++
90 lines
3.5 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, typename S = T>
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class __no_align IOPort {
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private:
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volatile T value;
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public:
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constexpr T read_raw() const {
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return this->value;
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}
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constexpr S read() const {
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return S{this->value};
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}
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constexpr void write_raw(T value) {
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this->value = value;
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}
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constexpr void write(const S& value) {
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this->value = static_cast<T>(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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class __no_align IOPortEx : public IOPort<typename T::UnderlyingType, T> {
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private:
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typedef typename T::UnderlyingType Raw;
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public:
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constexpr Raw read_range_value(const BitRange<Raw>& range) const {
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return IOPort<Raw, T>::read().get_value(range);
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}
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constexpr void write_range_value(const BitRangeValue<Raw>& value) {
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IOPort<Raw, 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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IOPort<Base16::UnderlyingType, Base16> low;
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IOPort<Base16::UnderlyingType, 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(, IOPortEx<type>, name, adr)
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#define __declare_io_port_global_const(type, name, adr) __cast_io_adr_with_type(const, IOPortEx<type>, name, adr)
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#define __declare_io_port_global_simple(type, name, adr) __cast_io_adr_with_type(, IOPort<type>, name, adr)
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#define __declare_io_port_global_const_simple(type, name, adr) __cast_io_adr_with_type(const, IOPort<type>, name, adr)
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#define __declare_io_port_member(type, name, adr) __cast_io_adr_with_type(inline, IOPortEx<type>, name, adr)
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#define __declare_io_port_member_const(type, name, adr) __cast_io_adr_with_type(const inline, IOPortEx<type>, name, adr)
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#define __declare_io_port_member_simple(type, name, adr) __cast_io_adr_with_type(inline, IOPort<type>, name, adr)
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#define __declare_io_port_member_const_simple(type, name, adr) __cast_io_adr_with_type(const inline, IOPort<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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