biosmemx.S revision 1.3
1 1.3 dsl /* $NetBSD: biosmemx.S,v 1.3 2003/02/01 14:48:18 dsl Exp $ */ 2 1.1 drochner 3 1.1 drochner /* 4 1.2 drochner * Copyright (c) 1997, 1999 5 1.1 drochner * Matthias Drochner. All rights reserved. 6 1.1 drochner * 7 1.1 drochner * Redistribution and use in source and binary forms, with or without 8 1.1 drochner * modification, are permitted provided that the following conditions 9 1.1 drochner * are met: 10 1.1 drochner * 1. Redistributions of source code must retain the above copyright 11 1.1 drochner * notice, this list of conditions and the following disclaimer. 12 1.1 drochner * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 drochner * notice, this list of conditions and the following disclaimer in the 14 1.1 drochner * documentation and/or other materials provided with the distribution. 15 1.1 drochner * 3. All advertising materials mentioning features or use of this software 16 1.1 drochner * must display the following acknowledgement: 17 1.1 drochner * This product includes software developed for the NetBSD Project 18 1.1 drochner * by Matthias Drochner. 19 1.1 drochner * 4. The name of the author may not be used to endorse or promote products 20 1.1 drochner * derived from this software without specific prior written permission. 21 1.1 drochner * 22 1.1 drochner * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 1.1 drochner * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 1.1 drochner * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 1.1 drochner * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 1.1 drochner * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 1.1 drochner * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 1.1 drochner * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 1.1 drochner * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 1.1 drochner * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 1.1 drochner * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 1.1 drochner * 33 1.1 drochner */ 34 1.1 drochner 35 1.1 drochner #include <machine/asm.h> 36 1.1 drochner 37 1.1 drochner #define data32 .byte 0x66 38 1.1 drochner 39 1.1 drochner .text 40 1.1 drochner 41 1.1 drochner /* int getextmem2(int buffer[2]) 42 1.1 drochner return: 0=OK, -1=error 43 1.1 drochner buffer[0]: extmem kBytes below 16M (max 15M/1024) 44 1.1 drochner buffer[1]: extmem above 16M, in 64k units 45 1.1 drochner */ 46 1.1 drochner ENTRY(getextmem2) 47 1.1 drochner pushl %ebp 48 1.1 drochner movl %esp,%ebp 49 1.1 drochner pushl %ebx 50 1.1 drochner pushl %ecx 51 1.1 drochner pushl %edx 52 1.1 drochner push %esi 53 1.1 drochner push %edi 54 1.1 drochner 55 1.1 drochner call _C_LABEL(prot_to_real) 56 1.3 dsl .code16 57 1.1 drochner 58 1.3 dsl xorl %ebx, %ebx 59 1.1 drochner movl $0xe801, %eax 60 1.1 drochner int $0x15 61 1.1 drochner jc err2 62 1.1 drochner 63 1.1 drochner movl $0, %ecx 64 1.1 drochner jmp ok2 65 1.1 drochner err2: 66 1.1 drochner movl $-1, %ecx 67 1.1 drochner ok2: 68 1.1 drochner movl %eax, %edx 69 1.1 drochner 70 1.3 dsl calll _C_LABEL(real_to_prot) 71 1.3 dsl .code32 72 1.1 drochner 73 1.1 drochner movl 8(%ebp), %eax 74 1.1 drochner movl %edx, (%eax) 75 1.1 drochner movl %ebx, 4(%eax) 76 1.1 drochner 77 1.1 drochner movl %ecx, %eax 78 1.1 drochner 79 1.1 drochner pop %edi 80 1.1 drochner pop %esi 81 1.1 drochner popl %edx 82 1.1 drochner popl %ecx 83 1.1 drochner popl %ebx 84 1.1 drochner popl %ebp 85 1.1 drochner ret 86 1.1 drochner 87 1.2 drochner /* int getmementry(int *iterator, buffer[5]) 88 1.2 drochner return: 0=ok, else error 89 1.1 drochner buffer[0]: start of memory chunk 90 1.1 drochner buffer[2]: length (bytes) 91 1.1 drochner buffer[4]: type 92 1.1 drochner */ 93 1.1 drochner ENTRY(getmementry) 94 1.1 drochner pushl %ebp 95 1.1 drochner movl %esp,%ebp 96 1.1 drochner pushl %ebx 97 1.1 drochner pushl %ecx 98 1.1 drochner pushl %edx 99 1.1 drochner push %esi 100 1.1 drochner push %edi 101 1.1 drochner 102 1.2 drochner movl 8(%ebp), %eax 103 1.2 drochner movl 0(%eax), %ebx 104 1.1 drochner movl $20, %ecx 105 1.1 drochner movl $0x534d4150, %edx # "SMAP" 106 1.1 drochner movl 12(%ebp), %edi 107 1.1 drochner 108 1.1 drochner call _C_LABEL(prot_to_real) 109 1.3 dsl .code16 110 1.1 drochner 111 1.3 dsl movw $0xe820, %ax 112 1.1 drochner int $0x15 113 1.1 drochner 114 1.2 drochner setc %cl 115 1.1 drochner 116 1.3 dsl calll _C_LABEL(real_to_prot) 117 1.3 dsl .code32 118 1.1 drochner 119 1.2 drochner movl 8(%ebp), %eax 120 1.2 drochner movl %ebx, 0(%eax) 121 1.2 drochner xorl %eax, %eax 122 1.2 drochner movb %cl, %al 123 1.1 drochner 124 1.1 drochner pop %edi 125 1.1 drochner pop %esi 126 1.1 drochner popl %edx 127 1.1 drochner popl %ecx 128 1.1 drochner popl %ebx 129 1.1 drochner popl %ebp 130 1.1 drochner ret 131
Indexes created Mon Sep 29 21:09:56 GMT 2025