BarinkOS/source/kernel/cpu.h

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#pragma once
#include <stdint.h>
/*
Based on Intel specifications.
C++ interface for the cpu.s assembly file.
©Nigel Barink - 2022
*/
/*
* EFLAGS FUNCTIONS
*/
uint32_t GetEFLAGS();
/*
* CONTROL_REGISTER_0 FUNCTIONS
*/
uint32_t GetCR0();
/*
struct CR0_Register {
uint8_t PE :1; // Protection Mode Enabled 0
uint8_t MP :1; // Monitor co-processor 1
uint8_t EM :1; // Emulation 2
uint8_t TS :1; // Task switched 3
uint8_t ET :1; // Extension Type 4
uint8_t NE :1; // Numeric error 5
uint16_t Reserved :10; // 6,7,8,9,10,11,12,13,14,15
uint8_t WP :1; // Write Protect 16
uint8_t Reserved :1; // 17
uint8_t AM :1; // Alligment Task 18
uint16_t Reserved :10; // 19,20,21,22,23,24,25,26,27,28
uint8_t NW :1; // Not-write through 29
uint8_t CD :1; // Cache disable 30
uint8_t PG :1; // Paging 31
};*/
#define GET_PE_BIT(CONTROL_REGISTER_0) (CONTROL_REGISTER_0&0x1)
#define GET_MP_BIT(CONTROL_REGISTER_0) (CONTROL_REGISTER_0&0x2)
#define GET_EM_BIT(CONTROL_REGISTER_0) (CONTROL_REGISTER_0&0x3)
#define GET_TS_BIT(CONTROL_REGISTER_0) (CONTROL_REGISTER_0&0x4)
#define GET_ET_BIT(CONTROL_REGISTER_0) (CONTROL_REGISTER_0&0x5)
#define GET_NE_BIT(CONTROL_REGISTER_0) (CONTROL_REGISTER_0&0x6)
#define GET_PG_BIT(CONTROL_REGISTER_0) (CONTROL_REGISTER_0>>31)
/*
* CONTROL_REGISTER_4 FUNCTIONS
*/
uint32_t GetCR4();
#define GET_PSE_BIT(CONTROL_REGISTER_4) (CONTROL_REGISTER_4&0x4)
#define GET_PAE_BIT(CONTROL_REGISTER_4) (CONTROL_REGISTER_4&0x5)
/*
* CONTROL_REGISTER_2 FUNCTIONS
*/
uint32_t GetCR2();
/*
* CONTROL_REGISTER_3 FUNCTIONS
*/
uint32_t GetCR3();