boot/freeldr/freeldr/arch/amd64/i386idt.S

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1998-2002  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20         .text
  21         .code16
  22
  23 #define ASM
  24 #include <arch.h>
  25
  26
  27         .p2align        2       /* force 4-byte alignment */
  28 EXTERN(i386idt)
  29         /* Exception 0 - Divide By Zero */
  30         .word   i386DivideByZero                        /* Offset 0 - 15 */
  31         .word   0x0008                                          /* Selector */
  32         .word   0x8e00                                          /* Flags, Zero Byte */
  33         .word   0x0000                                          /* Offset 16 - 31 */
  34
  35         /* Exception 1 - Debug Exception */
  36         .word   i386DebugException                      /* Offset 0 - 15 */
  37         .word   0x0008                                          /* Selector */
  38         .word   0x8e00                                          /* Zero byte, flags */
  39         .word   0x0000                                          /* Offset 16 - 31 */
  40
  41         /* Exception 2 - NMI */
  42         .word   i386NMIException                        /* Offset 0 - 15 */
  43         .word   0x0008                                          /* Selector */
  44         .word   0x8e00                                          /* Zero byte, flags */
  45         .word   0x0000                                          /* Offset 16 - 31 */
  46
  47         /* Exception 3 - Breakpoint (INT 3) */
  48         .word   i386Breakpoint                          /* Offset 0 - 15 */
  49         .word   0x0008                                          /* Selector */
  50         .word   0x8e00                                          /* Zero byte, flags */
  51         .word   0x0000                                          /* Offset 16 - 31 */
  52
  53         /* Exception 4 - Overflow (INTO with EFLAGS[OF] set) */
  54         .word   i386Overflow                            /* Offset 0 - 15 */
  55         .word   0x0008                                          /* Selector */
  56         .word   0x8e00                                          /* Zero byte, flags */
  57         .word   0x0000                                          /* Offset 16 - 31 */
  58
  59         /* Exception 5 - Bound Exception */
  60         .word   i386BoundException                      /* Offset 0 - 15 */
  61         .word   0x0008                                          /* Selector */
  62         .word   0x8e00                                          /* Zero byte, flags */
  63         .word   0x0000                                          /* Offset 16 - 31 */
  64
  65         /* Exception 6 - Invalid Opcode */
  66         .word   i386InvalidOpcode                       /* Offset 0 - 15 */
  67         .word   0x0008                                          /* Selector */
  68         .word   0x8e00                                          /* Zero byte, flags */
  69         .word   0x0000                                          /* Offset 16 - 31 */
  70
  71         /* Exception 7 - FPU Not Available */
  72         .word   i386FPUNotAvailable                     /* Offset 0 - 15 */
  73         .word   0x0008                                          /* Selector */
  74         .word   0x8e00                                          /* Zero byte, flags */
  75         .word   0x0000                                          /* Offset 16 - 31 */
  76
  77         /* Exception 8 - Double Fault */
  78         .word   i386DoubleFault                         /* Offset 0 - 15 */
  79         .word   0x0008                                          /* Selector */
  80         .word   0x8e00                                          /* Zero byte, flags */
  81         .word   0x0000                                          /* Offset 16 - 31 */
  82
  83         /* Exception 9 - Coprocessor Segment Overrun */
  84         .word   i386CoprocessorSegment          /* Offset 0 - 15 */
  85         .word   0x0008                                          /* Selector */
  86         .word   0x8e00                                          /* Zero byte, flags */
  87         .word   0x0000                                          /* Offset 16 - 31 */
  88
  89         /* Exception 10 (0x0A) - Invalid TSS */
  90         .word   i386InvalidTSS                          /* Offset 0 - 15 */
  91         .word   0x0008                                          /* Selector */
  92         .word   0x8e00                                          /* Zero byte, flags */
  93         .word   0x0000                                          /* Offset 16 - 31 */
  94
  95         /* Exception 11 (0x0B) - Segment Not Present */
  96         .word   i386SegmentNotPresent           /* Offset 0 - 15 */
  97         .word   0x0008                                          /* Selector */
  98         .word   0x8e00                                          /* Zero byte, flags */
  99         .word   0x0000                                          /* Offset 16 - 31 */
 100
 101         /* Exception 12 (0x0C) - Stack Exception */
 102         .word   i386StackException                      /* Offset 0 - 15 */
 103         .word   0x0008                                          /* Selector */
 104         .word   0x8e00                                          /* Zero byte, flags */
 105         .word   0x0000                                          /* Offset 16 - 31 */
 106
 107         /* Exception 13 (0x0D) - General Protection Fault */
 108         .word   i386GeneralProtectionFault      /* Offset 0 - 15 */
 109         .word   0x0008                                          /* Selector */
 110         .word   0x8e00                                          /* Zero byte, flags */
 111         .word   0x0000                                          /* Offset 16 - 31 */
 112
 113         /* Exception 14 (0x0E) - Page Fault */
 114         .word   i386PageFault                           /* Offset 0 - 15 */
 115         .word   0x0008                                          /* Selector */
 116         .word   0x8e00                                          /* Zero byte, flags */
 117         .word   0x0000                                          /* Offset 16 - 31 */
 118
 119         /* Exception 15 (0x0F) - Reserved */
 120         .word   0x0000                                          /* Offset 0 - 15 */
 121         .word   0x0000                                          /* Selector */
 122         .word   0x0000                                          /* Zero byte, flags */
 123         .word   0x0000                                          /* Offset 16 - 31 */
 124
 125         /* Exception 16 (0x10) - Coprocessor Error */
 126         .word   i386CoprocessorError            /* Offset 0 - 15 */
 127         .word   0x0008                                          /* Selector */
 128         .word   0x8e00                                          /* Zero byte, flags */
 129         .word   0x0000                                          /* Offset 16 - 31 */
 130
 131         /* Exception 17 (0x11) - Alignment Check */
 132         .word   i386AlignmentCheck                      /* Offset 0 - 15 */
 133         .word   0x0008                                          /* Selector */
 134         .word   0x8e00                                          /* Zero byte, flags */
 135         .word   0x0000                                          /* Offset 16 - 31 */
 136
 137         /* Exception 18 (0x12) - Machine Check */
 138         .word   i386MachineCheck                        /* Offset 0 - 15 */
 139         .word   0x0008                                          /* Selector */
 140         .word   0x8e00                                          /* Zero byte, flags */
 141         .word   0x0000                                          /* Offset 16 - 31 */
 142
 143         /* Exception 19 (0x13) - Reserved */
 144         .word   0x0000                                          /* Offset 0 - 15 */
 145         .word   0x0000                                          /* Selector */
 146         .word   0x0000                                          /* Zero byte, flags */
 147         .word   0x0000                                          /* Offset 16 - 31 */
 148
 149         /* Exception 20 (0x14) - Reserved */
 150         .word   0x0000                                          /* Offset 0 - 15 */
 151         .word   0x0000                                          /* Selector */
 152         .word   0x0000                                          /* Zero byte, flags */
 153         .word   0x0000                                          /* Offset 16 - 31 */
 154
 155         /* Exception 21 (0x15) - Reserved */
 156         .word   0x0000                                          /* Offset 0 - 15 */
 157         .word   0x0000                                          /* Selector */
 158         .word   0x0000                                          /* Zero byte, flags */
 159         .word   0x0000                                          /* Offset 16 - 31 */
 160
 161         /* Exception 22 (0x16) - Reserved */
 162         .word   0x0000                                          /* Offset 0 - 15 */
 163         .word   0x0000                                          /* Selector */
 164         .word   0x0000                                          /* Zero byte, flags */
 165         .word   0x0000                                          /* Offset 16 - 31 */
 166
 167         /* Exception 23 (0x17) - Reserved */
 168         .word   0x0000                                          /* Offset 0 - 15 */
 169         .word   0x0000                                          /* Selector */
 170         .word   0x0000                                          /* Zero byte, flags */
 171         .word   0x0000                                          /* Offset 16 - 31 */
 172
 173         /* Exception 24 (0x18) - Reserved */
 174         .word   0x0000                                          /* Offset 0 - 15 */
 175         .word   0x0000                                          /* Selector */
 176         .word   0x0000                                          /* Zero byte, flags */
 177         .word   0x0000                                          /* Offset 16 - 31 */
 178
 179         /* Exception 25 (0x19) - Reserved */
 180         .word   0x0000                                          /* Offset 0 - 15 */
 181         .word   0x0000                                          /* Selector */
 182         .word   0x0000                                          /* Zero byte, flags */
 183         .word   0x0000                                          /* Offset 16 - 31 */
 184
 185         /* Exception 26 (0x1A) - Reserved */
 186         .word   0x0000                                          /* Offset 0 - 15 */
 187         .word   0x0000                                          /* Selector */
 188         .word   0x0000                                          /* Zero byte, flags */
 189         .word   0x0000                                          /* Offset 16 - 31 */
 190
 191         /* Exception 27 (0x1B) - Reserved */
 192         .word   0x0000                                          /* Offset 0 - 15 */
 193         .word   0x0000                                          /* Selector */
 194         .word   0x0000                                          /* Zero byte, flags */
 195         .word   0x0000                                          /* Offset 16 - 31 */
 196
 197         /* Exception 28 (0x1C) - Reserved */
 198         .word   0x0000                                          /* Offset 0 - 15 */
 199         .word   0x0000                                          /* Selector */
 200         .word   0x0000                                          /* Zero byte, flags */
 201         .word   0x0000                                          /* Offset 16 - 31 */
 202
 203         /* Exception 29 (0x1D) - Reserved */
 204         .word   0x0000                                          /* Offset 0 - 15 */
 205         .word   0x0000                                          /* Selector */
 206         .word   0x0000                                          /* Zero byte, flags */
 207         .word   0x0000                                          /* Offset 16 - 31 */
 208
 209         /* Exception 30 (0x1E) - Reserved */
 210         .word   0x0000                                          /* Offset 0 - 15 */
 211         .word   0x0000                                          /* Selector */
 212         .word   0x0000                                          /* Zero byte, flags */
 213         .word   0x0000                                          /* Offset 16 - 31 */
 214
 215         /* Exception 31 (0x1F) - Reserved */
 216         .word   0x0000                                          /* Offset 0 - 15 */
 217         .word   0x0000                                          /* Selector */
 218         .word   0x0000                                          /* Zero byte, flags */
 219         .word   0x0000                                          /* Offset 16 - 31 */
 220
 221 /* IDT table pointer */
 222 EXTERN(i386idtptr)
 223         .word   (i386idtptr-i386idt)            /* Limit */
 224         .long   i386idt                                         /* Base Address */