17c478bdstevel@tonic-gate/*
27c478bdstevel@tonic-gate * CDDL HEADER START
37c478bdstevel@tonic-gate *
47c478bdstevel@tonic-gate * The contents of this file are subject to the terms of the
57fad02epetede * Common Development and Distribution License (the "License").
67fad02epetede * You may not use this file except in compliance with the License.
77c478bdstevel@tonic-gate *
87c478bdstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bdstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bdstevel@tonic-gate * See the License for the specific language governing permissions
117c478bdstevel@tonic-gate * and limitations under the License.
127c478bdstevel@tonic-gate *
137c478bdstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bdstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bdstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bdstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bdstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bdstevel@tonic-gate *
197c478bdstevel@tonic-gate * CDDL HEADER END
207c478bdstevel@tonic-gate */
217c478bdstevel@tonic-gate/*
2282333daSurya Prakki * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
237c478bdstevel@tonic-gate */
247c478bdstevel@tonic-gate
257c478bdstevel@tonic-gate#if defined(_BOOT)
267c478bdstevel@tonic-gate#include <sys/salib.h>
277c478bdstevel@tonic-gate#else
287c478bdstevel@tonic-gate#include <sys/systm.h>
297c478bdstevel@tonic-gate#endif
307c478bdstevel@tonic-gate
317c478bdstevel@tonic-gate/*
327c478bdstevel@tonic-gate * Implementations of functions described in memory(3C).
337c478bdstevel@tonic-gate * These functions match the section 3C manpages.
347c478bdstevel@tonic-gate */
3582333daSurya Prakki/*
3682333daSurya Prakki * The SunStudio compiler may generate calls to _memmove, _memset,
3782333daSurya Prakki * and _memcpy; So we need to make sure that the correct symbols
3882333daSurya Prakki * exist for these calls.
3982333daSurya Prakki */
4082333daSurya Prakki#pragma weak _memmove = memmove
417c478bdstevel@tonic-gatevoid *
427c478bdstevel@tonic-gatememmove(void *s1, const void *s2, size_t n)
437c478bdstevel@tonic-gate{
447c478bdstevel@tonic-gate#if defined(_BOOT)
457c478bdstevel@tonic-gate	bcopy(s2, s1, n);
467c478bdstevel@tonic-gate#else
477c478bdstevel@tonic-gate	ovbcopy(s2, s1, n);
487c478bdstevel@tonic-gate#endif
497c478bdstevel@tonic-gate	return (s1);
507c478bdstevel@tonic-gate}
517c478bdstevel@tonic-gate
5282333daSurya Prakki#pragma weak _memset = memset
537c478bdstevel@tonic-gatevoid *
547c478bdstevel@tonic-gatememset(void *s, int c, size_t n)
557c478bdstevel@tonic-gate{
567c478bdstevel@tonic-gate	unsigned char *t;
577c478bdstevel@tonic-gate
587c478bdstevel@tonic-gate	if ((unsigned char)c == '\0')
597c478bdstevel@tonic-gate		bzero(s, n);
607c478bdstevel@tonic-gate	else {
617c478bdstevel@tonic-gate		for (t = (unsigned char *)s; n > 0; n--)
627c478bdstevel@tonic-gate			*t++ = (unsigned char)c;
637c478bdstevel@tonic-gate	}
647c478bdstevel@tonic-gate	return (s);
657c478bdstevel@tonic-gate}
667c478bdstevel@tonic-gate
677c478bdstevel@tonic-gateint
687c478bdstevel@tonic-gatememcmp(const void *s1, const void *s2, size_t n)
697c478bdstevel@tonic-gate{
707c478bdstevel@tonic-gate	const uchar_t *ps1 = s1;
717c478bdstevel@tonic-gate	const uchar_t *ps2 = s2;
727c478bdstevel@tonic-gate
737c478bdstevel@tonic-gate	if (s1 != s2 && n != 0) {
747c478bdstevel@tonic-gate		do {
757c478bdstevel@tonic-gate			if (*ps1++ != *ps2++)
767c478bdstevel@tonic-gate				return (ps1[-1] - ps2[-1]);
777c478bdstevel@tonic-gate		} while (--n != 0);
787c478bdstevel@tonic-gate	}
797c478bdstevel@tonic-gate
807c478bdstevel@tonic-gate	return (0);
817c478bdstevel@tonic-gate}
827c478bdstevel@tonic-gate
837fad02epetede#pragma weak _memcpy = memcpy
847c478bdstevel@tonic-gatevoid *
857c478bdstevel@tonic-gatememcpy(void *s1, const void *s2, size_t n)
867c478bdstevel@tonic-gate{
877c478bdstevel@tonic-gate	bcopy(s2, s1, n);
887c478bdstevel@tonic-gate	return (s1);
897c478bdstevel@tonic-gate}
907c478bdstevel@tonic-gate
917c478bdstevel@tonic-gatevoid *
927c478bdstevel@tonic-gatememchr(const void *sptr, int c1, size_t n)
937c478bdstevel@tonic-gate{
947c478bdstevel@tonic-gate	if (n != 0) {
957c478bdstevel@tonic-gate		unsigned char c = (unsigned char)c1;
967c478bdstevel@tonic-gate		const unsigned char *sp = sptr;
977c478bdstevel@tonic-gate
987c478bdstevel@tonic-gate		do {
997c478bdstevel@tonic-gate			if (*sp++ == c)
1007c478bdstevel@tonic-gate				return ((void *)--sp);
1017c478bdstevel@tonic-gate		} while (--n != 0);
1027c478bdstevel@tonic-gate	}
1037c478bdstevel@tonic-gate	return (NULL);
1047c478bdstevel@tonic-gate}
105