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 | .text | |
| 26 | .globl _strcmp | |
| 27 | _strcmp: | |
| e9ce8d39 A |
28 | movl 0x04(%esp),%eax |
| 29 | movl 0x08(%esp),%edx | |
| 30 | jmp L2 /* Jump into the loop! */ | |
| 31 | ||
| 32 | .align 2,0x90 | |
| 33 | L1: incl %eax | |
| 34 | incl %edx | |
| 35 | L2: movb (%eax),%cl | |
| 36 | testb %cl,%cl /* null terminator??? */ | |
| 37 | jz L3 | |
| 38 | cmpb %cl,(%edx) /* chars match??? */ | |
| 39 | jne L3 | |
| 40 | incl %eax | |
| 41 | incl %edx | |
| 42 | movb (%eax),%cl | |
| 43 | testb %cl,%cl | |
| 44 | jz L3 | |
| 45 | cmpb %cl,(%edx) | |
| 46 | jne L3 | |
| 47 | incl %eax | |
| 48 | incl %edx | |
| 49 | movb (%eax),%cl | |
| 50 | testb %cl,%cl | |
| 51 | jz L3 | |
| 52 | cmpb %cl,(%edx) | |
| 53 | jne L3 | |
| 54 | incl %eax | |
| 55 | incl %edx | |
| 56 | movb (%eax),%cl | |
| 57 | testb %cl,%cl | |
| 58 | jz L3 | |
| 59 | cmpb %cl,(%edx) | |
| 60 | jne L3 | |
| 61 | incl %eax | |
| 62 | incl %edx | |
| 63 | movb (%eax),%cl | |
| 64 | testb %cl,%cl | |
| 65 | jz L3 | |
| 66 | cmpb %cl,(%edx) | |
| 67 | jne L3 | |
| 68 | incl %eax | |
| 69 | incl %edx | |
| 70 | movb (%eax),%cl | |
| 71 | testb %cl,%cl | |
| 72 | jz L3 | |
| 73 | cmpb %cl,(%edx) | |
| 74 | jne L3 | |
| 75 | incl %eax | |
| 76 | incl %edx | |
| 77 | movb (%eax),%cl | |
| 78 | testb %cl,%cl | |
| 79 | jz L3 | |
| 80 | cmpb %cl,(%edx) | |
| 81 | jne L3 | |
| 82 | incl %eax | |
| 83 | incl %edx | |
| 84 | movb (%eax),%cl | |
| 85 | testb %cl,%cl | |
| 86 | jz L3 | |
| 87 | cmpb %cl,(%edx) | |
| 88 | je L1 | |
| 89 | .align 2, 0x90 | |
| 90 | L3: movzbl (%eax),%eax /* unsigned comparison */ | |
| 91 | movzbl (%edx),%edx | |
| 92 | subl %edx,%eax | |
| 93 | ret |