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 | .text | |
| 23 | .globl _strcmp | |
| 24 | _strcmp: | |
| 25 | #if defined(__i386__) | |
| 26 | movl 0x04(%esp),%eax | |
| 27 | movl 0x08(%esp),%edx | |
| 28 | jmp L2 /* Jump into the loop! */ | |
| 29 | ||
| 30 | .align 2,0x90 | |
| 31 | L1: incl %eax | |
| 32 | incl %edx | |
| 33 | L2: movb (%eax),%cl | |
| 34 | testb %cl,%cl /* null terminator??? */ | |
| 35 | jz L3 | |
| 36 | cmpb %cl,(%edx) /* chars match??? */ | |
| 37 | jne L3 | |
| 38 | incl %eax | |
| 39 | incl %edx | |
| 40 | movb (%eax),%cl | |
| 41 | testb %cl,%cl | |
| 42 | jz L3 | |
| 43 | cmpb %cl,(%edx) | |
| 44 | jne L3 | |
| 45 | incl %eax | |
| 46 | incl %edx | |
| 47 | movb (%eax),%cl | |
| 48 | testb %cl,%cl | |
| 49 | jz L3 | |
| 50 | cmpb %cl,(%edx) | |
| 51 | jne L3 | |
| 52 | incl %eax | |
| 53 | incl %edx | |
| 54 | movb (%eax),%cl | |
| 55 | testb %cl,%cl | |
| 56 | jz L3 | |
| 57 | cmpb %cl,(%edx) | |
| 58 | jne L3 | |
| 59 | incl %eax | |
| 60 | incl %edx | |
| 61 | movb (%eax),%cl | |
| 62 | testb %cl,%cl | |
| 63 | jz L3 | |
| 64 | cmpb %cl,(%edx) | |
| 65 | jne L3 | |
| 66 | incl %eax | |
| 67 | incl %edx | |
| 68 | movb (%eax),%cl | |
| 69 | testb %cl,%cl | |
| 70 | jz L3 | |
| 71 | cmpb %cl,(%edx) | |
| 72 | jne L3 | |
| 73 | incl %eax | |
| 74 | incl %edx | |
| 75 | movb (%eax),%cl | |
| 76 | testb %cl,%cl | |
| 77 | jz L3 | |
| 78 | cmpb %cl,(%edx) | |
| 79 | jne L3 | |
| 80 | incl %eax | |
| 81 | incl %edx | |
| 82 | movb (%eax),%cl | |
| 83 | testb %cl,%cl | |
| 84 | jz L3 | |
| 85 | cmpb %cl,(%edx) | |
| 86 | je L1 | |
| 87 | .align 2, 0x90 | |
| 88 | L3: movzbl (%eax),%eax /* unsigned comparison */ | |
| 89 | movzbl (%edx),%edx | |
| 90 | subl %edx,%eax | |
| 91 | ret | |
| 92 | #elif defined(__ppc__) | |
| 93 | mr r5,r3 | |
| 94 | 1: lbz r3,0(r5) | |
| 95 | addi r5,r5,1 | |
| 96 | cmpwi cr1,r3,0 | |
| 97 | lbz r0,0(r4) | |
| 98 | addi r4,r4,1 | |
| 99 | subf. r3,r0,r3 | |
| 100 | beqlr+ cr1 | |
| 101 | beq- 1b | |
| 102 | blr | |
| 103 | #else | |
| 104 | #error strcmp is not defined for this architecture | |
| 105 | #endif |