projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 17030342 MD |
1 | /*- |
| 2 | * Copyright (c) 1990 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. | |
| 17030342 MD |
16 | * 4. Neither the name of the University nor the names of its contributors |
| 17 | * may be used to endorse or promote products derived from this software | |
| 18 | * without specific prior written permission. | |
| 19 | * | |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 30 | * SUCH DAMAGE. | |
| 31 | * | |
| 32 | * @(#)Ovfork.s 5.1 (Berkeley) 4/23/90 | |
| eb9f4715 | 33 | * $FreeBSD: src/lib/libc/amd64/sys/vfork.S,v 1.24 2008/11/02 01:10:54 peter Exp $ |
| 17030342 MD |
34 | */ |
| 35 | ||
| 36 | #include <machine/asm.h> | |
| 37 | #include "SYS.h" | |
| 38 | ||
| 39 | .weak _vfork | |
| 40 | .set _vfork,__sys_vfork | |
| 41 | .weak vfork | |
| 42 | .set vfork,__sys_vfork | |
| 43 | ENTRY(__sys_vfork) | |
| 44 | popq %rsi /* fetch return address (%rsi preserved) */ | |
| 45 | mov $SYS_vfork,%rax | |
| 46 | KERNCALL | |
| 47 | jb 1f | |
| 48 | jmp *%rsi | |
| 49 | 1: | |
| 50 | pushq %rsi | |
| 51 | #ifdef PIC | |
| 52 | movq PIC_GOT(HIDENAME(cerror)),%rdx | |
| 53 | jmp *%rdx | |
| 54 | #else | |
| 55 | jmp HIDENAME(cerror) | |
| 56 | #endif | |
| eb9f4715 | 57 | END(__sys_vfork) |