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 27*9a70fc3bSMark J. Nelson .file "wschr.s" 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate/ 307c478bd9Sstevel@tonic-gate/ Wide character wcschr() implementation 317c478bd9Sstevel@tonic-gate/ 327c478bd9Sstevel@tonic-gate/ Algorithm based on Solaris 2.6 gen/strchr.s implementation 337c478bd9Sstevel@tonic-gate/ 347c478bd9Sstevel@tonic-gate 357c478bd9Sstevel@tonic-gate#include <sys/asm_linkage.h> 367c478bd9Sstevel@tonic-gate 377c478bd9Sstevel@tonic-gate ANSI_PRAGMA_WEAK(wcschr,function) 387c478bd9Sstevel@tonic-gate ANSI_PRAGMA_WEAK(wschr,function) 397c478bd9Sstevel@tonic-gate 407c478bd9Sstevel@tonic-gate .align 8 / accounts for .loop alignment and prolog 417c478bd9Sstevel@tonic-gate 427257d1b4Sraf ENTRY(wcschr) /* (wchar_t *s, wchar_t wc) */ 437c478bd9Sstevel@tonic-gate movq %rdi,%rax 447c478bd9Sstevel@tonic-gate.loop: 457c478bd9Sstevel@tonic-gate movl (%rax),%edx / %edx = wchar of string 467c478bd9Sstevel@tonic-gate cmpl %esi,%edx / find it? 477c478bd9Sstevel@tonic-gate je .found / yes 487c478bd9Sstevel@tonic-gate testl %edx,%edx / is it null? 497c478bd9Sstevel@tonic-gate je .notfound 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate movl 4(%rax),%edx / %edx = wchar of string 527c478bd9Sstevel@tonic-gate cmpl %esi,%edx / find it? 537c478bd9Sstevel@tonic-gate je .found1 / yes 547c478bd9Sstevel@tonic-gate testl %edx,%edx / is it null? 557c478bd9Sstevel@tonic-gate je .notfound 567c478bd9Sstevel@tonic-gate 577c478bd9Sstevel@tonic-gate movl 8(%rax),%edx / %edx = wchar of string 587c478bd9Sstevel@tonic-gate cmpl %esi,%edx / find it? 597c478bd9Sstevel@tonic-gate je .found2 / yes 607c478bd9Sstevel@tonic-gate testl %edx,%edx / is it null? 617c478bd9Sstevel@tonic-gate je .notfound 627c478bd9Sstevel@tonic-gate 637c478bd9Sstevel@tonic-gate movl 12(%rax),%edx / %edx = wchar of string 647c478bd9Sstevel@tonic-gate cmpl %esi,%edx / find it? 657c478bd9Sstevel@tonic-gate je .found3 / yes 667c478bd9Sstevel@tonic-gate addq $16,%rax 677c478bd9Sstevel@tonic-gate testl %edx,%edx / is it null? 687c478bd9Sstevel@tonic-gate jne .loop 697c478bd9Sstevel@tonic-gate 707c478bd9Sstevel@tonic-gate.notfound: 717c478bd9Sstevel@tonic-gate xorl %eax,%eax / %rax = NULL 727c478bd9Sstevel@tonic-gate ret 737c478bd9Sstevel@tonic-gate 747c478bd9Sstevel@tonic-gate.found3: 757c478bd9Sstevel@tonic-gate addq $12,%rax 767c478bd9Sstevel@tonic-gate ret 777c478bd9Sstevel@tonic-gate.found2: 787c478bd9Sstevel@tonic-gate addq $8,%rax 797c478bd9Sstevel@tonic-gate ret 807c478bd9Sstevel@tonic-gate.found1: 817c478bd9Sstevel@tonic-gate addq $4,%rax 827c478bd9Sstevel@tonic-gate.found: 837c478bd9Sstevel@tonic-gate ret 847257d1b4Sraf SET_SIZE(wcschr) 857c478bd9Sstevel@tonic-gate 867257d1b4Sraf ENTRY(wschr) 877257d1b4Sraf jmp wcschr / tail call into wcschr 887257d1b4Sraf SET_SIZE(wschr) 89