io.s

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.section .text
.code32
 
.global __inb
__inb:
    pushl %ebp
    movl %esp, %ebp
    movl 8(%ebp), %edx #port
    xorl %eax, %eax
    inb  %dx, %al
    popl %ebp
    ret
 
.global __outb
__outb:
    pushl %ebp
    movl %esp, %ebp
    movl 8(%ebp), %edx #port
    movl 12(%ebp), %eax #val
    outb %al, %dx
    popl %ebp
    ret
 
.global __inw
__inw:
    pushl %ebp
    movl %esp, %ebp
    movl 8(%ebp), %edx #port
    xorl %eax, %eax
    inw  %dx, %ax
    popl %ebp
    ret
 
.global __outw
__outw:
    pushl %ebp
    movl %esp, %ebp
    movl 8(%ebp), %edx #port
    movl 12(%ebp), %eax #val
    outw %ax, %dx
    popl %ebp
    ret
 
 
    .global __reboot
__reboot:
    #keyboard controller reset method
    mov $0x64, %dx #keyboard controller command port
    mov $0xFE, %al #reset command
    outb %al, %dx