setlogin.S revision 126107
1/*- 2 * Copyright (c) 1991 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37#if defined(LIBC_SCCS) && !defined(lint) 38 .asciz "@(#)setlogin.s 5.2 (Berkeley) 4/12/91" 39#endif /* LIBC_SCCS and not lint */ 40#include <machine/asm.h> 41__FBSDID("$FreeBSD: head/lib/libc/amd64/sys/setlogin.S 126107 2004-02-22 02:11:39Z peter $"); 42 43#include "SYS.h" 44 45.globl CNAME(_logname_valid) /* in _getlogin() */ 46 47 .weak _setlogin 48 .set _setlogin,__sys_setlogin 49 .weak setlogin 50 .set setlogin,__sys_setlogin 51ENTRY(__sys_setlogin) 52 mov $SYS_setlogin,%rax 53 KERNCALL 54 jb 1f 55#ifdef PIC 56 movq PIC_GOT(CNAME(_logname_valid)),%rdx 57 movl $0,(%rdx) 58#else 59 movl $0,CNAME(_logname_valid)(%rip) 60#endif 61 ret /* setlogin(name) */ 621: 63#ifdef PIC 64 movq PIC_GOT(HIDENAME(cerror)),%rdx 65 jmp *%rdx 66#else 67 jmp HIDENAME(cerror) 68#endif 69