| The Android Open Source Project | a27d2ba | 2008-10-21 07:00:00 -0700 | [diff] [blame^] | 1 | /* $OpenBSD: index.S,v 1.4 2005/08/07 11:30:38 espie Exp $ */ |
| 2 | /* |
| 3 | * Written by J.T. Conklin <jtc@netbsd.org>. |
| 4 | * Public domain. |
| 5 | */ |
| 6 | |
| 7 | #include <machine/asm.h> |
| 8 | |
| 9 | #ifdef STRCHR |
| 10 | ENTRY(strchr) |
| 11 | #else |
| 12 | ENTRY(index) |
| 13 | #endif |
| 14 | movl 4(%esp),%eax |
| 15 | movb 8(%esp),%cl |
| 16 | .align 2,0x90 |
| 17 | L1: |
| 18 | movb (%eax),%dl |
| 19 | cmpb %dl,%cl /* found char??? */ |
| 20 | je L2 |
| 21 | incl %eax |
| 22 | testb %dl,%dl /* null terminator??? */ |
| 23 | jnz L1 |
| 24 | xorl %eax,%eax |
| 25 | L2: |
| 26 | ret |