1 /* $NetBSD: copy.c,v 1.12 2020/06/30 16:20:02 maxv 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 1.12 2020/06/30 16:20:02 maxv Exp $"); 31 32 #define __UFETCHSTORE_PRIVATE 33 #define __UCAS_PRIVATE 34 35 #include <sys/types.h> 36 #include <sys/systm.h> 37 #include <machine/thunk.h> 38 39 /* XXX until strnlen(3) has been added to the kernel, we *could* panic on it */ 40 #define strnlen(str, maxlen) uimin(strlen((str)), maxlen) 41 42 int 43 copyin(const void *uaddr, void *kaddr, size_t len) 44 { 45 // thunk_printf("copyin uaddr %p, kaddr %p, len %d\n", uaddr, kaddr, (int) len); 46 memcpy(kaddr, uaddr, len); 47 return 0; 48 } 49 50 int 51 copyout(const void *kaddr, void *uaddr, size_t len) 52 { 53 // thunk_printf("copyout kaddr %p, uaddr %p, len %d\n", kaddr, uaddr, (int) len); 54 memcpy(uaddr, kaddr, len); 55 return 0; 56 } 57 58 int 59 copyinstr(const void *uaddr, void *kaddr, size_t len, size_t *done) 60 { 61 len = uimin(strnlen(uaddr, len), len) + 1; 62 strncpy(kaddr, uaddr, len); 63 if (done) 64 *done = len; 65 return 0; 66 } 67 68 int 69 copyoutstr(const void *kaddr, void *uaddr, size_t len, size_t *done) 70 { 71 len = uimin(strnlen(kaddr, len), len) + 1; 72 strncpy(uaddr, kaddr, len); 73 if (done) 74 *done = len; 75 return 0; 76 } 77 78 int 79 kcopy(const void *src, void *dst, size_t len) 80 { 81 memcpy(dst, src, len); 82 #ifdef DEBUG 83 if (memcmp(dst, src, len) != 0) 84 panic("kcopy not finished correctly\n"); 85 #endif 86 return 0; 87 } 88 89 int 90 _ufetch_8(const uint8_t *uaddr, uint8_t *valp) 91 { 92 *valp = *uaddr; 93 return 0; 94 } 95 96 int 97 _ufetch_16(const uint16_t *uaddr, uint16_t *valp) 98 { 99 *valp = *uaddr; 100 return 0; 101 } 102 103 int 104 _ufetch_32(const uint32_t *uaddr, uint32_t *valp) 105 { 106 *valp = *uaddr; 107 return 0; 108 } 109 110 #ifdef _LP64 111 int 112 _ufetch_64(const uint64_t *uaddr, uint64_t *valp) 113 { 114 *valp = *uaddr; 115 return 0; 116 } 117 #endif /* _LP64 */ 118 119 int 120 _ustore_8(uint8_t *uaddr, uint8_t val) 121 { 122 *uaddr = val; 123 return 0; 124 } 125 126 int 127 _ustore_16(uint16_t *uaddr, uint16_t val) 128 { 129 *uaddr = val; 130 return 0; 131 } 132 133 int 134 _ustore_32(uint32_t *uaddr, uint32_t val) 135 { 136 *uaddr = val; 137 return 0; 138 } 139 140 #ifdef _LP64 141 int 142 _ustore_64(uint64_t *uaddr, uint64_t val) 143 { 144 *uaddr = val; 145 return 0; 146 } 147 #endif /* _LP64 */ 148