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gdt.s
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gdt.s
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/*-----------------------------------------------------------------------------
* Load IDT
*---------------------------------------------------------------------------*/
.global gdt_flush
gdt_flush:
mov 4(%esp), %eax
lgdt (%eax)
mov $0x10, %ax
mov %ax, %ds
mov %ax, %es
mov %ax, %fs
mov %ax, %gs
mov %ax, %ss
ljmp $0x08,$flush
flush:
ret
/*-----------------------------------------------------------------------------
* Load IDT
*---------------------------------------------------------------------------*/
.global idt_flush
idt_flush:
mov 4(%esp), %eax
lidt (%eax)
ret
/*-----------------------------------------------------------------------------
* Load TR
*---------------------------------------------------------------------------*/
.global tss_flush
tss_flush:
mov 4(%esp), %eax
ltr %ax
ret
/*-----------------------------------------------------------------------------
* Read TR
*---------------------------------------------------------------------------*/
.global get_tr
get_tr:
xor %eax, %eax
str %eax
ret