/* * Written by J.T. Conklin . * Public domain. * Adapted for NetBSD/x86_64 by Frank van der Linden */ #include ENTRY(strchr) 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