1 /* $NetBSD: copy.c,v 1.7 2012/01/14 17:42:52 reinoud Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Jared D. McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: copy.c,v 1.7 2012/01/14 17:42:52 reinoud Exp $"); 31 32 #include <sys/types.h> 33 #include <sys/systm.h> 34 #include <machine/thunk.h> 35 36 /* XXX until strnlen(3) has been added to the kernel, we *could* panic on it */ 37 #define strnlen(str, maxlen) min(strlen((str)), maxlen) 38 39 int 40 copyin(const void *uaddr, void *kaddr, size_t len) 41 { 42 // thunk_printf("copyin uaddr %p, kaddr %p, len %d\n", uaddr, kaddr, (int) len); 43 memcpy(kaddr, uaddr, len); 44 return 0; 45 } 46 47 int 48 copyout(const void *kaddr, void *uaddr, size_t len) 49 { 50 // thunk_printf("copyout kaddr %p, uaddr %p, len %d\n", kaddr, uaddr, (int) len); 51 memcpy(uaddr, kaddr, len); 52 return 0; 53 } 54 55 int 56 copyinstr(const void *uaddr, void *kaddr, size_t len, size_t *done) 57 { 58 len = min(strnlen(uaddr, len), len) + 1; 59 strncpy(kaddr, uaddr, len); 60 if (done) 61 *done = len; 62 return 0; 63 } 64 65 int 66 copyoutstr(const void *kaddr, void *uaddr, size_t len, size_t *done) 67 { 68 len = min(strnlen(kaddr, len), len) + 1; 69 strncpy(uaddr, kaddr, len); 70 if (done) 71 *done = len; 72 return 0; 73 } 74 75 int 76 copystr(const void *kfaddr, void *kdaddr, size_t len, size_t *done) 77 { 78 len = min(strnlen(kfaddr, len), len) + 1; 79 strncpy(kdaddr, kfaddr, len); 80 if (done) 81 *done = len; 82 return 0; 83 } 84 85 int 86 kcopy(const void *src, void *dst, size_t len) 87 { 88 memcpy(dst, src, len); 89 #ifdef DEBUG 90 if (memcmp(dst, src, len) != 0) 91 panic("kcopy not finished correctly\n"); 92 #endif 93 return 0; 94 } 95 96 int 97 fuswintr(const void *base) 98 { 99 return *(const short *)base; 100 } 101 102 int 103 suswintr(void *base, short c) 104 { 105 *(short *)base = c; 106 return 0; 107 } 108 109 int 110 subyte(void *base, int c) 111 { 112 *(char *)base = c; 113 return 0; 114 } 115 116 int 117 suword(void *base, long c) 118 { 119 *(long *)base = c; 120 return 0; 121 } 122