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; -------- Fast System Call init ----------

	; Intel SYSENTER/SYSEXIT (AMD CPU support it too)

	bt	[cpu_caps], CAPS_SEP

	jnc	.SEnP			; SysEnter not Present

	xor	edx, edx

	mov	ecx, MSR_SYSENTER_CS

	mov	eax, os_code

	wrmsr

	mov	ecx, MSR_SYSENTER_ESP

	mov	eax, sysenter_stack	; Check it

	wrmsr

	mov	ecx, MSR_SYSENTER_EIP

	mov	eax, sysenter_entry

	wrmsr

.SEnP:

	; AMD SYSCALL/SYSRET

	cmp	byte[cpu_vendor], 'A'

	jne	.noSYSCALL

	mov	eax, 0x80000001

	cpuid

	test	edx, 0x800		; bit_11 - SYSCALL/SYSRET support

	jz	.noSYSCALL

	mov	ecx, MSR_AMD_EFER

	rdmsr

	or	eax, 1			; bit_0 - System Call Extension (SCE)

	wrmsr

	; !!!! It`s dirty hack, fix it !!!

	; Bits of EDX :

	; Bit 31–16 During the SYSRET instruction, this field is copied into the CS register

	;  and the contents of this field, plus 8, are copied into the SS register.

	; Bit 15–0 During the SYSCALL instruction, this field is copied into the CS register

	;  and the contents of this field, plus 8, are copied into the SS register.

	; mov	edx, (os_code + 16) * 65536 + os_code

	mov	edx, 0x1B0013

	mov	eax, syscall_entry

	mov	ecx, MSR_AMD_STAR

	wrmsr

.noSYSCALL:

; -----------------------------------------

     ret