17c478bd9Sstevel@tonic-gate/* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*9a70fc3bSMark J. Nelson * Common Development and Distribution License (the "License"). 6*9a70fc3bSMark J. Nelson * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate/* 227c478bd9Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 26*9a70fc3bSMark J. Nelson .file "strchr.s" 277c478bd9Sstevel@tonic-gate 287c478bd9Sstevel@tonic-gate#include "SYS.h" 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate ENTRY(strchr) /* (char *, char) */ 317c478bd9Sstevel@tonic-gate.loop: 327c478bd9Sstevel@tonic-gate movb (%rdi),%dl / %dl = byte of string 337c478bd9Sstevel@tonic-gate cmpb %sil,%dl / find it? 347c478bd9Sstevel@tonic-gate je .found / yes 357c478bd9Sstevel@tonic-gate testb %dl,%dl / is it null? 367c478bd9Sstevel@tonic-gate je .notfound 377c478bd9Sstevel@tonic-gate 387c478bd9Sstevel@tonic-gate movb 1(%rdi),%dl / %dl = byte of string 397c478bd9Sstevel@tonic-gate cmpb %sil,%dl / find it? 407c478bd9Sstevel@tonic-gate je .found1 / yes 417c478bd9Sstevel@tonic-gate testb %dl,%dl / is it null? 427c478bd9Sstevel@tonic-gate je .notfound 437c478bd9Sstevel@tonic-gate 447c478bd9Sstevel@tonic-gate movb 2(%rdi),%dl / %dl = byte of string 457c478bd9Sstevel@tonic-gate cmpb %sil,%dl / find it? 467c478bd9Sstevel@tonic-gate je .found2 / yes 477c478bd9Sstevel@tonic-gate testb %dl,%dl / is it null? 487c478bd9Sstevel@tonic-gate je .notfound 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate movb 3(%rdi),%dl / %dl = byte of string 517c478bd9Sstevel@tonic-gate cmpb %sil,%dl / find it? 527c478bd9Sstevel@tonic-gate je .found3 / yes 537c478bd9Sstevel@tonic-gate addq $4,%rdi 547c478bd9Sstevel@tonic-gate testb %dl,%dl / is it null? 557c478bd9Sstevel@tonic-gate jne .loop 567c478bd9Sstevel@tonic-gate 577c478bd9Sstevel@tonic-gate.notfound: 587c478bd9Sstevel@tonic-gate xorl %eax,%eax / %rax = NULL 597c478bd9Sstevel@tonic-gate ret 607c478bd9Sstevel@tonic-gate 617c478bd9Sstevel@tonic-gate.found3: 627c478bd9Sstevel@tonic-gate incq %rdi 637c478bd9Sstevel@tonic-gate.found2: 647c478bd9Sstevel@tonic-gate incq %rdi 657c478bd9Sstevel@tonic-gate.found1: 667c478bd9Sstevel@tonic-gate incq %rdi 677c478bd9Sstevel@tonic-gate.found: 687c478bd9Sstevel@tonic-gate movq %rdi,%rax 697c478bd9Sstevel@tonic-gate ret 707c478bd9Sstevel@tonic-gate SET_SIZE(strchr) 71