diff options
Diffstat (limited to 'libc/arch-x86/string/index.S')
| -rw-r--r-- | libc/arch-x86/string/index.S | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/libc/arch-x86/string/index.S b/libc/arch-x86/string/index.S new file mode 100644 index 0000000..7f83ef5 --- /dev/null +++ b/libc/arch-x86/string/index.S @@ -0,0 +1,26 @@ +/* $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 |