musl/src/linux/prctl.c

#include <sys/prctl.h>
#include <stdarg.h>
#include "syscall.h"

int prctl(int op, ...)
{
	unsigned long x[4];
	int i;
	va_list ap;
	va_start(ap, op);
	for (i=0; i<4; i++) x[i] = va_arg(ap, unsigned long);
	return syscall5(__NR_prctl, op, x[0], x[1], x[2], x[3]);
}