kernel/x86/uart.S


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.section .text

.global outb
.global inb

# void outb(uint16_t port, uint8_t val)
outb:
    mov %dl, %al
    mov %cx, %dx
    outb %al, %dx
    ret

# uint8_t inb(uint16_t port)
inb:
    mov %cx, %dx
    inb %dx, %al
    ret