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 57257d1b4Sraf * Common Development and Distribution License (the "License"). 67257d1b4Sraf * 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 */ 217257d1b4Sraf 227c478bd9Sstevel@tonic-gate/* 237257d1b4Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate */ 267c478bd9Sstevel@tonic-gate 279a70fc3bSMark J. Nelson .file "wslen.s" 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate/* 307c478bd9Sstevel@tonic-gate * Wide character wcslen() implementation 317c478bd9Sstevel@tonic-gate * 327c478bd9Sstevel@tonic-gate * size_t 337257d1b4Sraf * wcslen(const wchar_t *s) 347c478bd9Sstevel@tonic-gate *{ 357c478bd9Sstevel@tonic-gate * const wchar_t *s0 = s + 1; 367c478bd9Sstevel@tonic-gate * while (*s++) 377c478bd9Sstevel@tonic-gate * ; 387c478bd9Sstevel@tonic-gate * return (s - s0); 397c478bd9Sstevel@tonic-gate *} 40*55fea89dSDan Cross */ 417c478bd9Sstevel@tonic-gate 427c478bd9Sstevel@tonic-gate#include <sys/asm_linkage.h> 437c478bd9Sstevel@tonic-gate 447c478bd9Sstevel@tonic-gate ANSI_PRAGMA_WEAK(wcslen,function) 457c478bd9Sstevel@tonic-gate ANSI_PRAGMA_WEAK(wslen,function) 467c478bd9Sstevel@tonic-gate 477257d1b4Sraf ENTRY(wcslen) /* (wchar_t *) */ 487c478bd9Sstevel@tonic-gate xorl %eax,%eax 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate .align 8 517c478bd9Sstevel@tonic-gate.loop: 527c478bd9Sstevel@tonic-gate cmpl $0,(%rdi) 537c478bd9Sstevel@tonic-gate je .out0 547c478bd9Sstevel@tonic-gate cmpl $0,4(%rdi) 557c478bd9Sstevel@tonic-gate je .out1 567c478bd9Sstevel@tonic-gate cmpl $0,8(%rdi) 577c478bd9Sstevel@tonic-gate je .out2 587c478bd9Sstevel@tonic-gate cmpl $0,12(%rdi) 597c478bd9Sstevel@tonic-gate je .out3 607c478bd9Sstevel@tonic-gate addq $4,%rax 617c478bd9Sstevel@tonic-gate addq $16,%rdi 627c478bd9Sstevel@tonic-gate jmp .loop 637c478bd9Sstevel@tonic-gate 647c478bd9Sstevel@tonic-gate .align 4 657c478bd9Sstevel@tonic-gate.out1: 667c478bd9Sstevel@tonic-gate incq %rax 67*55fea89dSDan Cross.out0: 687c478bd9Sstevel@tonic-gate ret 69*55fea89dSDan Cross 707c478bd9Sstevel@tonic-gate .align 4 717c478bd9Sstevel@tonic-gate.out2: 727c478bd9Sstevel@tonic-gate addq $2,%rax 737c478bd9Sstevel@tonic-gate ret 747c478bd9Sstevel@tonic-gate 75*55fea89dSDan Cross .align 4 767c478bd9Sstevel@tonic-gate.out3: 777c478bd9Sstevel@tonic-gate addq $3, %rax 78*55fea89dSDan Cross ret 797257d1b4Sraf SET_SIZE(wcslen) 807c478bd9Sstevel@tonic-gate 817257d1b4Sraf ENTRY(wslen) 827257d1b4Sraf jmp wcslen / tail call into wcslen 837257d1b4Sraf SET_SIZE(wslen) 84