1*5d9d9091SRichard Lowe/* 2*5d9d9091SRichard Lowe * CDDL HEADER START 3*5d9d9091SRichard Lowe * 4*5d9d9091SRichard Lowe * The contents of this file are subject to the terms of the 5*5d9d9091SRichard Lowe * Common Development and Distribution License (the "License"). 6*5d9d9091SRichard Lowe * You may not use this file except in compliance with the License. 7*5d9d9091SRichard Lowe * 8*5d9d9091SRichard Lowe * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*5d9d9091SRichard Lowe * or http://www.opensolaris.org/os/licensing. 10*5d9d9091SRichard Lowe * See the License for the specific language governing permissions 11*5d9d9091SRichard Lowe * and limitations under the License. 12*5d9d9091SRichard Lowe * 13*5d9d9091SRichard Lowe * When distributing Covered Code, include this CDDL HEADER in each 14*5d9d9091SRichard Lowe * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*5d9d9091SRichard Lowe * If applicable, add the following below this CDDL HEADER, with the 16*5d9d9091SRichard Lowe * fields enclosed by brackets "[]" replaced with your own identifying 17*5d9d9091SRichard Lowe * information: Portions Copyright [yyyy] [name of copyright owner] 18*5d9d9091SRichard Lowe * 19*5d9d9091SRichard Lowe * CDDL HEADER END 20*5d9d9091SRichard Lowe */ 21*5d9d9091SRichard Lowe 22*5d9d9091SRichard Lowe/* 23*5d9d9091SRichard Lowe * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24*5d9d9091SRichard Lowe * Use is subject to license terms. 25*5d9d9091SRichard Lowe */ 26*5d9d9091SRichard Lowe 27*5d9d9091SRichard Lowe .file "wslen.s" 28*5d9d9091SRichard Lowe 29*5d9d9091SRichard Lowe/* 30*5d9d9091SRichard Lowe * Wide character wcslen() implementation 31*5d9d9091SRichard Lowe * 32*5d9d9091SRichard Lowe * size_t 33*5d9d9091SRichard Lowe * wcslen(const wchar_t *s) 34*5d9d9091SRichard Lowe *{ 35*5d9d9091SRichard Lowe * const wchar_t *s0 = s + 1; 36*5d9d9091SRichard Lowe * while (*s++) 37*5d9d9091SRichard Lowe * ; 38*5d9d9091SRichard Lowe * return (s - s0); 39*5d9d9091SRichard Lowe *} 40*5d9d9091SRichard Lowe */ 41*5d9d9091SRichard Lowe 42*5d9d9091SRichard Lowe#include <sys/asm_linkage.h> 43*5d9d9091SRichard Lowe 44*5d9d9091SRichard Lowe ANSI_PRAGMA_WEAK(wcslen,function) 45*5d9d9091SRichard Lowe ANSI_PRAGMA_WEAK(wslen,function) 46*5d9d9091SRichard Lowe 47*5d9d9091SRichard Lowe ENTRY(wcslen) /* (wchar_t *) */ 48*5d9d9091SRichard Lowe xorl %eax,%eax 49*5d9d9091SRichard Lowe 50*5d9d9091SRichard Lowe .align 8 51*5d9d9091SRichard Lowe.loop: 52*5d9d9091SRichard Lowe cmpl $0,(%rdi) 53*5d9d9091SRichard Lowe je .out0 54*5d9d9091SRichard Lowe cmpl $0,4(%rdi) 55*5d9d9091SRichard Lowe je .out1 56*5d9d9091SRichard Lowe cmpl $0,8(%rdi) 57*5d9d9091SRichard Lowe je .out2 58*5d9d9091SRichard Lowe cmpl $0,12(%rdi) 59*5d9d9091SRichard Lowe je .out3 60*5d9d9091SRichard Lowe addq $4,%rax 61*5d9d9091SRichard Lowe addq $16,%rdi 62*5d9d9091SRichard Lowe jmp .loop 63*5d9d9091SRichard Lowe 64*5d9d9091SRichard Lowe .align 4 65*5d9d9091SRichard Lowe.out1: 66*5d9d9091SRichard Lowe incq %rax 67*5d9d9091SRichard Lowe.out0: 68*5d9d9091SRichard Lowe ret 69*5d9d9091SRichard Lowe 70*5d9d9091SRichard Lowe .align 4 71*5d9d9091SRichard Lowe.out2: 72*5d9d9091SRichard Lowe addq $2,%rax 73*5d9d9091SRichard Lowe ret 74*5d9d9091SRichard Lowe 75*5d9d9091SRichard Lowe .align 4 76*5d9d9091SRichard Lowe.out3: 77*5d9d9091SRichard Lowe addq $3, %rax 78*5d9d9091SRichard Lowe ret 79*5d9d9091SRichard Lowe SET_SIZE(wcslen) 80*5d9d9091SRichard Lowe 81*5d9d9091SRichard Lowe ENTRY(wslen) 82*5d9d9091SRichard Lowe jmp wcslen / tail call into wcslen 83*5d9d9091SRichard Lowe SET_SIZE(wslen) 84