projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| e9ce8d39 A |
1 | /* |
| 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 734aad71 | 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. |
| e9ce8d39 | 7 | * |
| 734aad71 A |
8 | * This file contains Original Code and/or Modifications of Original Code |
| 9 | * as defined in and that are subject to the Apple Public Source License | |
| 10 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 11 | * compliance with the License. Please obtain a copy of the License at | |
| 12 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 13 | * file. | |
| 14 | * | |
| 15 | * The Original Code and all software distributed under the License are | |
| 16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| e9ce8d39 A |
17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 734aad71 A |
19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 20 | * Please see the License for the specific language governing rights and | |
| 21 | * limitations under the License. | |
| e9ce8d39 A |
22 | * |
| 23 | * @APPLE_LICENSE_HEADER_END@ | |
| 24 | */ | |
| 25 | #include "SYS.h" | |
| 5b2abdfb A |
26 | .data |
| 27 | EXPORT(__current_pid) | |
| 28 | .long 0 | |
| e9ce8d39 | 29 | |
| 5b2abdfb A |
30 | TEXT |
| 31 | LEAF(_getpid) | |
| 32 | #if defined(__DYNAMIC__) | |
| 33 | mflr r0 | |
| 34 | bcl 20,31,1f | |
| 35 | 1: | |
| 36 | mflr r5 | |
| 37 | mtlr r0 | |
| 38 | addis r5, r5, ha16(__current_pid - 1b) | |
| 39 | addi r5, r5, lo16(__current_pid - 1b) | |
| 40 | #else | |
| 41 | lis r5,ha16(__current_pid) | |
| 42 | ori r5,r5,lo16(__current_pid) | |
| 43 | #endif | |
| 44 | lwz r3,0(r5) // get the cached pid | |
| 45 | cmpwi r3,0 // if positive, | |
| 46 | bgtlr+ // return it | |
| 47 | ||
| 48 | SYSCALL_NONAME(getpid, 0) | |
| e9ce8d39 | 49 | |
| 5b2abdfb A |
50 | lwarx r4,0,r5 // see if we can cache it |
| 51 | cmpwi r4,0 // we cant if there are any | |
| 52 | bltlr- // vforks in progress | |
| e9ce8d39 | 53 | |
| 5b2abdfb A |
54 | stwcx. r3,0,r5 // ignore cache conflicts |
| 55 | blr | |
| 56 | END(_getpid) |