/* * Written by J.T. Conklin . * Public domain. * Adapted for NetBSD/x86_64 by Frank van der Linden */ #include #if defined(LIBC_SCCS) RCSID("$NetBSD: index.S,v 1.2 2003/07/26 19:24:38 salo Exp $") #endif #ifdef STRCHR ENTRY(strchr) #else ENTRY(index) #endif movq %rdi,%rax movb %sil,%cl L1: movb (%rax),%dl cmpb %dl,%cl /* found char? */ je L2 incq %rax testb %dl,%dl /* null terminator? */ jnz L1 xorq %rax,%rax L2: ret