minix/lib/libc/arch/i386/misc/io_outsb.S

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/* outsb() - Output a byte array Author: Kees J. Bot */
/* 18 Mar 1996 */
/* void outsb(U16_t port, void *buf, size_t count); */
.text
.globl _outsb
_outsb:
push %ebp
movl %esp, %ebp
cld
push %esi
movl 8(%ebp), %edx /* port */
movl 12(%ebp), %esi /* buf */
movl 16(%ebp), %ecx /* byte count */
rep outsb /* output many bytes */
pop %esi
pop %ebp
ret