jabyengine/include/PSX/System/IOPorts/ioport.hpp

91 lines
3.5 KiB
C++

#ifndef __JABYENGINE_IOPORT_HPP__
#define __JABYENGINE_IOPORT_HPP__
#include "../../Auxiliary/complex_bitmap.hpp"
namespace JabyEngine {
template<typename T>
class __no_align IOPort {
private:
T value;
public:
// decltype(this) instead of IOPort<T>* lead to wrong runtime behaviour somethow...
constexpr T read() const {
return const_cast<const volatile IOPort<T>*>(this)->value;
}
template<typename...ARGS>
constexpr void write_combined(const ARGS&... value) {
IOPort::write(T::with(value...));
}
template<typename S>
constexpr void write(const BitRangeValue<S>& value) {
IOPort::write(T::with(value));
}
constexpr void write(const T& value) {
const_cast<volatile IOPort<T>*>(this)->value = value;
}
// We keep this a POD so we will not add assignment operators anymore
// We also removed ref() to be more percise
};
struct __no_align ubus32_t {
ComplexBitMap<uint16_t> low;
ComplexBitMap<uint16_t> high;
constexpr ubus32_t(uint32_t value) {
*this = value;
}
constexpr operator uint32_t() const {
return ((this->high.raw << 16) | this->low.raw);
}
operator uint32_t() const volatile {
return ((this->high.raw << 16) | this->low.raw);
}
constexpr ubus32_t& operator=(uint32_t value) {
this->low.raw = (value & 0xFFFF);
this->high.raw = (value >> 16);
return *this;
}
constexpr void operator=(uint32_t value) volatile {
this->low.raw = (value & 0xFFFF);
this->high.raw = (value >> 16);
}
};
static constexpr uintptr_t IO_Base_Mask = 0xF0000000;
static constexpr uintptr_t IO_Base_Adr = 0x10000000;
#define __io_port_adr(adr) (IO_Base_Adr + (adr & ~IO_Base_Mask))
#define __declare_io_port_global_raw(cv, type, name, adr) static __always_inline cv auto& name = *reinterpret_cast<IOPort<type>*>(__io_port_adr(adr))
#define __declare_io_port_global(type, name, adr) __declare_io_port_global_raw(, type, name, adr)
#define __declare_io_port_global_const(type, name, adr) __declare_io_port_global_raw(const, type, name, adr)
#define __declare_io_port_member(type, name, adr) __declare_io_port_global_raw(inline, type, name, adr)
#define __declare_io_port_member_const(type, name, adr) __declare_io_port_global_raw(const inline, type, name, adr)
#define __declare_io_port_global_array(type, name, adr, size) static __always_inline auto& name = reinterpret_cast<type(&)[size]>(*reinterpret_cast<type*>((IO_Base_Adr + (adr & ~IO_Base_Mask))))
#define __declare_io_port_global_struct(type, name, adr) static __always_inline auto& name = *reinterpret_cast<type*>(__io_port_adr(adr))
#define __io_port_inherit_complex_bit_map(name) \
constexpr __always_inline name() = default; \
constexpr __always_inline name(ComplexBitMap value) : ComplexBitMap(value) { \
} \
template<typename...ARGS> \
static constexpr __always_inline name with(ARGS...args) { \
return {ComplexBitMap::with(args...)}; \
}\
template<typename T> \
constexpr void __always_inline operator=(ComplexBitMap<T> value) volatile { \
this->raw = value.raw; \
}
}
#endif //!__JABYENGINE_IOPORT_HPP__