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 /* 23*82333da9SSurya Prakki * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */ 277c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate #if !defined(_KMDB) && !defined(_KERNEL) 307c478bd9Sstevel@tonic-gate 317257d1b4Sraf #include "lint.h" 32*82333da9SSurya Prakki 337c478bd9Sstevel@tonic-gate #endif /* !_KMDB && !_KERNEL */ 347c478bd9Sstevel@tonic-gate 35*82333da9SSurya Prakki /* 36*82333da9SSurya Prakki * The SunStudio compiler may generate calls to _memmove; So we 37*82333da9SSurya Prakki * need to make sure that the correct symbol exists for these calls. 38*82333da9SSurya Prakki */ 39*82333da9SSurya Prakki #pragma weak _memmove = memmove 40*82333da9SSurya Prakki 417c478bd9Sstevel@tonic-gate #include <sys/types.h> 427c478bd9Sstevel@tonic-gate 437c478bd9Sstevel@tonic-gate #if defined(_KERNEL) 447c478bd9Sstevel@tonic-gate #include <sys/systm.h> 457c478bd9Sstevel@tonic-gate #else 467c478bd9Sstevel@tonic-gate #include <string.h> 477c478bd9Sstevel@tonic-gate #include <memory.h> 487c478bd9Sstevel@tonic-gate #endif 497c478bd9Sstevel@tonic-gate 507c478bd9Sstevel@tonic-gate /* 517c478bd9Sstevel@tonic-gate * Copy s0 to s, always copy n bytes. 527c478bd9Sstevel@tonic-gate * Return s 537c478bd9Sstevel@tonic-gate * Copying between objects that overlap will take place correctly 547c478bd9Sstevel@tonic-gate */ 557c478bd9Sstevel@tonic-gate void * 567c478bd9Sstevel@tonic-gate memmove(void *s, const void *s0, size_t n) 577c478bd9Sstevel@tonic-gate { 587c478bd9Sstevel@tonic-gate if (n != 0) { 597c478bd9Sstevel@tonic-gate char *s1 = s; 607c478bd9Sstevel@tonic-gate const char *s2 = s0; 617c478bd9Sstevel@tonic-gate 627c478bd9Sstevel@tonic-gate if (s1 <= s2) { 637c478bd9Sstevel@tonic-gate do { 647c478bd9Sstevel@tonic-gate *s1++ = *s2++; 657c478bd9Sstevel@tonic-gate } while (--n != 0); 667c478bd9Sstevel@tonic-gate } else { 677c478bd9Sstevel@tonic-gate s2 += n; 687c478bd9Sstevel@tonic-gate s1 += n; 697c478bd9Sstevel@tonic-gate do { 707c478bd9Sstevel@tonic-gate *--s1 = *--s2; 717c478bd9Sstevel@tonic-gate } while (--n != 0); 727c478bd9Sstevel@tonic-gate } 737c478bd9Sstevel@tonic-gate } 747c478bd9Sstevel@tonic-gate return (s); 757c478bd9Sstevel@tonic-gate } 76