| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame^] | 1 | /* $OpenBSD: rindex.S,v 1.3 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 STRRCHR |
| 10 | ENTRY(strrchr) |
| 11 | #else |
| 12 | ENTRY(rindex) |
| 13 | #endif |
| 14 | pushl %ebx |
| 15 | movl 8(%esp),%edx |
| 16 | movb 12(%esp),%cl |
| 17 | xorl %eax,%eax /* init pointer to null */ |
| 18 | .align 2,0x90 |
| 19 | L1: |
| 20 | movb (%edx),%bl |
| 21 | cmpb %bl,%cl |
| 22 | jne L2 |
| 23 | movl %edx,%eax |
| 24 | L2: |
| 25 | incl %edx |
| 26 | testb %bl,%bl /* null terminator??? */ |
| 27 | jnz L1 |
| 28 | popl %ebx |
| 29 | ret |