1 /*- 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 /* 31 * MD primitives supporting placement of module data 32 * 33 * XXX should check load address/size against memory top. 34 */ 35 #include <stand.h> 36 37 #include "libi386.h" 38 #include "btxv86.h" 39 40 ssize_t 41 i386_copyin(const void *src, vm_offset_t dest, const size_t len) 42 { 43 if (dest + len >= memtop) { 44 errno = EFBIG; 45 return (-1); 46 } 47 48 bcopy(src, PTOV(dest), len); 49 return (len); 50 } 51 52 ssize_t 53 i386_copyout(const vm_offset_t src, void *dest, const size_t len) 54 { 55 if (src + len >= memtop) { 56 errno = EFBIG; 57 return (-1); 58 } 59 60 bcopy(PTOV(src), dest, len); 61 return (len); 62 } 63 64 65 ssize_t 66 i386_readin(readin_handle_t fd, vm_offset_t dest, const size_t len) 67 { 68 69 if (dest + len >= memtop_copyin) { 70 errno = EFBIG; 71 return (-1); 72 } 73 74 return (VECTX_READ(fd, PTOV(dest), len)); 75 } 76