diff options
Diffstat (limited to 'lib/libc/arch/i386/string/index.S')
| -rw-r--r-- | lib/libc/arch/i386/string/index.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/libc/arch/i386/string/index.S b/lib/libc/arch/i386/string/index.S new file mode 100644 index 00000000000..01f80b6f0d8 --- /dev/null +++ b/lib/libc/arch/i386/string/index.S @@ -0,0 +1,31 @@ +/* + * Written by J.T. Conklin <jtc@netbsd.org>. + * Public domain. + */ + +#include <machine/asm.h> + +#if defined(LIBC_SCCS) + RCSID("$NetBSD: index.S,v 1.8 1995/04/28 22:58:01 jtc Exp $") +#endif + +#ifdef STRCHR +ENTRY(strchr) +#else +ENTRY(index) +#endif + pushl %ebx + movl 8(%esp),%eax + movb 12(%esp),%cl + .align 2,0x90 +L1: + movb (%eax),%bl + cmpb %bl,%cl /* found char??? */ + je L2 + incl %eax + testb %bl,%bl /* null terminator??? */ + jnz L1 + xorl %eax,%eax +L2: + popl %ebx + ret |