projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 8e029c65 | 1 | /* |
| 224c7076 | 2 | * Copyright (c) 1999-2006 Apple Computer, Inc. All rights reserved. |
| 8e029c65 A |
3 | * |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 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 | |
| 15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 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. | |
| 20 | * | |
| 21 | * @APPLE_LICENSE_HEADER_END@ | |
| 22 | */ | |
| 23 | #import <architecture/i386/asm_help.h> | |
| 24 | ||
| 25 | .text | |
| 224c7076 | 26 | .globl mcount |
| 8e029c65 | 27 | mcount: |
| 224c7076 A |
28 | pushq %rbp // setup mcount's frame |
| 29 | movq %rsp, %rbp | |
| 30 | subq $64, %rsp // allocate space for storage and alignment | |
| 31 | movq %rax, 0(%rsp) | |
| 32 | movq %rdi, 8(%rsp) | |
| 33 | movq %rsi, 16(%rsp) | |
| 34 | movq %rdx, 24(%rsp) | |
| 35 | movq %rcx, 32(%rsp) | |
| 36 | movq %r8, 40(%rsp) | |
| 37 | movq %r9, 48(%rsp) | |
| 38 | movq (%rbp), %rsi // load the frame pointer of mcount's caller | |
| 39 | movq 8(%rsi), %rsi // load mcount's caller's return address | |
| 40 | movq 8(%rbp), %rdi // set up the selfpc parameter for moncount() | |
| 41 | CALL_EXTERN(_moncount) // call moncount() | |
| 42 | movq 48(%rsp), %r9 | |
| 43 | movq 40(%rsp), %r8 | |
| 44 | movq 32(%rsp), %rcx | |
| 45 | movq 24(%rsp), %rdx | |
| 46 | movq 16(%rsp), %rsi | |
| 47 | movq 8(%rsp), %rdi | |
| 48 | movq 0(%rsp), %rax | |
| 8e029c65 | 49 | |
| 224c7076 A |
50 | movq %rbp, %rsp |
| 51 | popq %rbp // tear down frame | |
| 52 | ret |