minix3/kernel/arch/i386/io_outb.S

14 lines
295 B
ArmAsm

/* outb() - Output one byte Author: Kees J. Bot */
/* 18 Mar 1996 */
/* void outb(U16_t port, U8_t value); */
#include <machine/asm.h>
ENTRY(outb)
push %ebp
movl %esp, %ebp
movl 8(%ebp), %edx /* port */
movl 8+4(%ebp), %eax /* value */
outb %dx /* output 1 byte */
pop %ebp
ret