| /* $OpenBSD: index.S,v 1.4 2005/08/07 11:30:38 espie Exp $ */ | |
| /* | |
| * Written by J.T. Conklin <jtc@netbsd.org>. | |
| * Public domain. | |
| */ | |
| #include <machine/asm.h> | |
| #ifdef STRCHR | |
| ENTRY(strchr) | |
| #else | |
| ENTRY(index) | |
| #endif | |
| movl 4(%esp),%eax | |
| movb 8(%esp),%cl | |
| .align 2,0x90 | |
| L1: | |
| movb (%eax),%dl | |
| cmpb %dl,%cl /* found char??? */ | |
| je L2 | |
| incl %eax | |
| testb %dl,%dl /* null terminator??? */ | |
| jnz L1 | |
| xorl %eax,%eax | |
| L2: | |
| ret |