defines crx registers detailed More...

#include <types.h>

Macros
#define	___CPU_CRX_H 0

#define	CPU_MSR_EFER 0xC0000080
	extended feature register

#define	CPU_MSR_STAR 0xC0000081
	system call target address register

#define	CPU_MSR_LSTAR 0xC0000082
	system call target address register

#define	CPU_MSR_FMASK 0xC0000084
	system call rflags mask register

#define	CPU_MSR_IA32_FS_BASE 0xC0000100
	fs base address

#define	CPU_MSR_IA32_GS_BASE 0xC0000101
	gs base address

#define	CPU_MSR_IA32_KERNEL_GS_BASE 0xC0000102
	kernel gs base address

Typedefs
typedef union cpu_reg_cr0_t	cpu_reg_cr0_t
	shard hand for struct cpu_reg_cr0_s

typedef union cpu_reg_cr4_u	cpu_reg_cr4_t
	short hand for union cpu_reg_cr4_u

Functions
	_Static_assert (sizeof(cpu_reg_cr4_t)==8, "cpu_reg_cr4_t size must be 8")

cpu_reg_cr4_t	cpu_read_cr4 (void)
	reads cr4 register More...

void	cpu_write_cr4 (cpu_reg_cr4_t cr4)
	writes cr4 register More...

cpu_reg_cr0_t	cpu_read_cr0 (void)
	reads cr0 register More...

void	cpu_write_cr0 (cpu_reg_cr0_t cr0)
	writes cr0 register More...

void	cpu_toggle_cr0_wp (void)
	toggles write protect bit cr0, when setted kernel can not modify readonly pages

void	cpu_cr0_disable_wp (void)
	disables write protect bit cr0, when setted kernel can not modify readonly pages

void	cpu_cr0_enable_wp (void)
	enables write protect bit cr0, when setted kernel can not modify readonly pages

void	cpu_enable_sse (void)
	enables sse support, modifies cr4 register

Detailed Description

defines crx registers detailed

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Macro Definition Documentation

#define ___CPU_CRX_H 0

prevent duplicate header error macro

cpu_reg_cr0_t cpu_read_cr0 ( void )

reads cr0 register

cpu_reg_cr4_t cpu_read_cr4 ( void )

reads cr4 register

void cpu_write_cr0 ( cpu_reg_cr0_t cr0 )

writes cr0 register

Parameters

[in] cr0 cr0 value

void cpu_write_cr4 ( cpu_reg_cr4_t cr4 )

writes cr4 register

Parameters

[in] cr4 cr4 value