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 A |
6 | * This file contains Original Code and/or Modifications of Original Code |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. Please obtain a copy of the License at | |
| 10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 11 | * file. | |
| 12 | * | |
| 13 | * The Original Code and all software distributed under the License are | |
| 14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| e9ce8d39 A |
15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 734aad71 A |
17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 18 | * Please see the License for the specific language governing rights and | |
| 19 | * limitations under the License. | |
| e9ce8d39 A |
20 | * |
| 21 | * @APPLE_LICENSE_HEADER_END@ | |
| 22 | */ | |
| 23 | #import <architecture/i386/asm_help.h> | |
| 24 | ||
| 25 | .text | |
| 26 | .globl mcount | |
| 27 | mcount: | |
| 28 | pushl %ebp // setup mcount's frame | |
| 29 | movl %esp,%ebp | |
| 30 | ||
| 31 | movl (%ebp),%eax // load the frame pointer of mcount's caller | |
| 32 | movl 4(%eax),%eax // load mcount's caller's return address | |
| 33 | pushl 4(%ebp) // push the selfpc parameter for moncount() | |
| 34 | pushl %eax // push the frompc parameter for moncount() | |
| 35 | CALL_EXTERN(_moncount) // call moncount() | |
| 36 | ||
| 37 | movl %ebp,%esp // tear down mcount's frame | |
| 38 | popl %ebp | |
| 39 | ret |