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 | * | |
| 6 | * The contents of this file constitute Original Code as defined in and | |
| 7 | * are subject to the Apple Public Source License Version 1.1 (the | |
| 8 | * "License"). You may not use this file except in compliance with the | |
| 9 | * License. Please obtain a copy of the License at | |
| 10 | * http://www.apple.com/publicsource and read it before using this file. | |
| 11 | * | |
| 12 | * This Original Code and all software distributed under the License are | |
| 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the | |
| 17 | * License for the specific language governing rights and limitations | |
| 18 | * under the License. | |
| 19 | * | |
| 20 | * @APPLE_LICENSE_HEADER_END@ | |
| 21 | */ | |
| 22 | #import <architecture/i386/asm_help.h> | |
| 23 | ||
| 24 | .text | |
| 25 | .globl mcount | |
| 26 | mcount: | |
| 27 | pushl %ebp // setup mcount's frame | |
| 28 | movl %esp,%ebp | |
| 29 | ||
| 30 | movl (%ebp),%eax // load the frame pointer of mcount's caller | |
| 31 | movl 4(%eax),%eax // load mcount's caller's return address | |
| 32 | pushl 4(%ebp) // push the selfpc parameter for moncount() | |
| 33 | pushl %eax // push the frompc parameter for moncount() | |
| 34 | CALL_EXTERN(_moncount) // call moncount() | |
| 35 | ||
| 36 | movl %ebp,%esp // tear down mcount's frame | |
| 37 | popl %ebp | |
| 38 | ret |