1/* 2 * Written by J.T. Conklin <jtc@netbsd.org>. 3 * Public domain. 4 * Adapted for NetBSD/x86_64 by Frank van der Linden <fvdl@wasabisystems.com> 5 */ 6 7#include <machine/asm.h> 8 9ENTRY(strchr) 10 movq %rdi,%rax 11 movb %sil,%cl 12L1: 13 movb (%rax),%dl 14 cmpb %dl,%cl /* found char? */ 15 je L2 16 incq %rax 17 testb %dl,%dl /* null terminator? */ 18 jnz L1 19 xorq %rax,%rax 20L2: 21 ret 22