| 1 | ; $Id: bootsector2-cpu-hidden-regs-1.asm 98103 2023-01-17 14:15:46Z vboxsync $
|
|---|
| 2 | ;; @file
|
|---|
| 3 | ; Bootsector that shows/tests the content of hidden CPU registers.
|
|---|
| 4 | ;
|
|---|
| 5 | ; Requires VMMDevTesting. Enable it via VBoxManage:
|
|---|
| 6 | ; VBoxManage setextradata bs-cpu-hidden-regs-1 VBoxInternal/Devices/VMMDev/0/Config/TestingEnabled 1
|
|---|
| 7 |
|
|---|
| 8 | ;
|
|---|
| 9 | ; Copyright (C) 2007-2023 Oracle and/or its affiliates.
|
|---|
| 10 | ;
|
|---|
| 11 | ; This file is part of VirtualBox base platform packages, as
|
|---|
| 12 | ; available from https://www.virtualbox.org.
|
|---|
| 13 | ;
|
|---|
| 14 | ; This program is free software; you can redistribute it and/or
|
|---|
| 15 | ; modify it under the terms of the GNU General Public License
|
|---|
| 16 | ; as published by the Free Software Foundation, in version 3 of the
|
|---|
| 17 | ; License.
|
|---|
| 18 | ;
|
|---|
| 19 | ; This program is distributed in the hope that it will be useful, but
|
|---|
| 20 | ; WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 21 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 22 | ; General Public License for more details.
|
|---|
| 23 | ;
|
|---|
| 24 | ; You should have received a copy of the GNU General Public License
|
|---|
| 25 | ; along with this program; if not, see <https://www.gnu.org/licenses>.
|
|---|
| 26 | ;
|
|---|
| 27 | ; The contents of this file may alternatively be used under the terms
|
|---|
| 28 | ; of the Common Development and Distribution License Version 1.0
|
|---|
| 29 | ; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
|
|---|
| 30 | ; in the VirtualBox distribution, in which case the provisions of the
|
|---|
| 31 | ; CDDL are applicable instead of those of the GPL.
|
|---|
| 32 | ;
|
|---|
| 33 | ; You may elect to license modified versions of this file under the
|
|---|
| 34 | ; terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 35 | ;
|
|---|
| 36 | ; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
|
|---|
| 37 | ;
|
|---|
| 38 |
|
|---|
| 39 |
|
|---|
| 40 | %include "iprt/asmdefs.mac"
|
|---|
| 41 | %include "iprt/x86.mac"
|
|---|
| 42 | %include "VBox/VMMDevTesting.mac"
|
|---|
| 43 |
|
|---|
| 44 | ;
|
|---|
| 45 | ; Include and execute the init code.
|
|---|
| 46 | ;
|
|---|
| 47 | %define BS2_INIT_RM
|
|---|
| 48 | %define BS2_INC_PE16
|
|---|
| 49 | %define BS2_INC_PE32
|
|---|
| 50 | %define BS2_INC_PP32
|
|---|
| 51 | %define BS2_INC_LM64
|
|---|
| 52 | %define BS2_WITH_TRAPS
|
|---|
| 53 | %define BS2_WITH_MANUAL_LTR
|
|---|
| 54 | %include "bootsector2-common-init-code.mac"
|
|---|
| 55 |
|
|---|
| 56 |
|
|---|
| 57 | ;
|
|---|
| 58 | ; The benchmark driver
|
|---|
| 59 | ;
|
|---|
| 60 | BEGINPROC main
|
|---|
| 61 | ;
|
|---|
| 62 | ; Test prologue.
|
|---|
| 63 | ;
|
|---|
| 64 | mov ax, .s_szTstName
|
|---|
| 65 | call TestInit_r86
|
|---|
| 66 | call Bs2EnableA20_r86
|
|---|
| 67 | call Bs2PanicIfVMMDevTestingIsMissing_r86
|
|---|
| 68 |
|
|---|
| 69 | call reportPostBiosValues
|
|---|
| 70 | call rmTests
|
|---|
| 71 | call doTests_rm_pe32
|
|---|
| 72 | call doTests_rm_pp32
|
|---|
| 73 | call doTests_rm_lm64
|
|---|
| 74 |
|
|---|
| 75 | ;
|
|---|
| 76 | ; We're done.
|
|---|
| 77 | ;
|
|---|
| 78 | call TestTerm_r86
|
|---|
| 79 | call Bs2Panic
|
|---|
| 80 |
|
|---|
| 81 | .s_szTstName:
|
|---|
| 82 | db 'tstCpuHidRegs', 0
|
|---|
| 83 | ENDPROC main
|
|---|
| 84 |
|
|---|
| 85 |
|
|---|
| 86 | ;
|
|---|
| 87 | ; Reports the values of interesting hidden registers as we start the test, i.e.
|
|---|
| 88 | ; right after the BIOS completed.
|
|---|
| 89 | ;
|
|---|
| 90 | BEGINPROC reportPostBiosValues
|
|---|
| 91 | push ax
|
|---|
| 92 | push bx
|
|---|
| 93 | mov ax, .s_szTstInitial
|
|---|
| 94 | call TestSub_r86
|
|---|
| 95 |
|
|---|
| 96 | mov ax, .s_szzStart
|
|---|
| 97 | call TestValueRegSZZ_rm
|
|---|
| 98 |
|
|---|
| 99 | .done
|
|---|
| 100 | pop bx
|
|---|
| 101 | pop ax
|
|---|
| 102 | ret
|
|---|
| 103 |
|
|---|
| 104 | .s_szzStart:
|
|---|
| 105 | db 'BIOS - ldtr:ldtr', 0;
|
|---|
| 106 | db 'BIOS - ldtr_base:ldtr_base', 0;
|
|---|
| 107 | db 'BIOS - ldtr_limit:ldtr_lim', 0;
|
|---|
| 108 | db 'BIOS - ldtr_attr:ldtr_attr', 0;
|
|---|
| 109 | db 'BIOS - tr:tr', 0;
|
|---|
| 110 | db 'BIOS - tr_base:tr_base', 0;
|
|---|
| 111 | db 'BIOS - tr_limit:tr_lim', 0;
|
|---|
| 112 | db 'BIOS - tr_attr:tr_attr', 0;
|
|---|
| 113 | db 'BIOS - cs:cs', 0;
|
|---|
| 114 | db 'BIOS - cs_base:cs_base', 0;
|
|---|
| 115 | db 'BIOS - cs_limit:cs_lim', 0;
|
|---|
| 116 | db 'BIOS - cs_attr:cs_attr', 0;
|
|---|
| 117 | db 'BIOS - ss:ss', 0;
|
|---|
| 118 | db 'BIOS - ss_base:ss_base', 0;
|
|---|
| 119 | db 'BIOS - ss_limit:ss_lim', 0;
|
|---|
| 120 | db 'BIOS - ss_attr:ss_attr', 0;
|
|---|
| 121 | db 'BIOS - ds:ds', 0;
|
|---|
| 122 | db 'BIOS - ds_base:ds_base', 0;
|
|---|
| 123 | db 'BIOS - ds_limit:ds_lim', 0;
|
|---|
| 124 | db 'BIOS - ds_attr:ds_attr', 0;
|
|---|
| 125 | db 0,0,0,0 ; terminator
|
|---|
| 126 | .s_szTstInitial:
|
|---|
| 127 | db 'Post BIOS Values', 0
|
|---|
| 128 | ENDPROC reportPostBiosValues
|
|---|
| 129 |
|
|---|
| 130 |
|
|---|
| 131 | ;
|
|---|
| 132 | ; Reports the values of interesting hidden registers as we start the test, i.e.
|
|---|
| 133 | ; right after the BIOS completed.
|
|---|
| 134 | ;
|
|---|
| 135 | BEGINPROC rmTests
|
|---|
| 136 | push eax
|
|---|
| 137 | push ebx
|
|---|
| 138 | pushfd
|
|---|
| 139 | cli
|
|---|
| 140 |
|
|---|
| 141 | mov ax, .s_szTstRM
|
|---|
| 142 | call TestSub_r86
|
|---|
| 143 |
|
|---|
| 144 | ; Check if CS changes when leaving protected mode.
|
|---|
| 145 | mov ax, .s_szzRMPre
|
|---|
| 146 | call TestValueRegSZZ_rm
|
|---|
| 147 | mov byte [cs:.s_dwDummy], 1
|
|---|
| 148 | call Bs2EnterMode_rm_pe32
|
|---|
| 149 | BITS 32
|
|---|
| 150 | mov eax, .s_szzProt32
|
|---|
| 151 | call TestValueRegSZZ_pe32
|
|---|
| 152 | ; mov word [cs:.s_dwDummy], 2 - this shall GP(CS).
|
|---|
| 153 | call Bs2ExitMode_pe32
|
|---|
| 154 | BITS 16
|
|---|
| 155 | mov ax, .s_szzRMPost
|
|---|
| 156 | call TestValueRegSZZ_rm
|
|---|
| 157 | mov dword [cs:.s_dwDummy], 3
|
|---|
| 158 |
|
|---|
| 159 | ;
|
|---|
| 160 | ; What happens if we make CS32 execute-only and return to real-mode.
|
|---|
| 161 | ;
|
|---|
| 162 | mov byte [cs:.s_dwDummy], 1
|
|---|
| 163 | call Bs2EnterMode_rm_pe16
|
|---|
| 164 | jmp BS2_SEL_CS16_EO:.loaded_cs16_eo
|
|---|
| 165 | .loaded_cs16_eo:
|
|---|
| 166 | mov eax, .s_szzProtEO
|
|---|
| 167 | call TestValueRegSZZ_pe16
|
|---|
| 168 | ; mov ax, word [cs:.s_dwDummy] - this shall GP(CS).
|
|---|
| 169 | ; mov word [cs:.s_dwDummy], 2 - this shall GP(CS).
|
|---|
| 170 |
|
|---|
| 171 | ; Leave real-mode ourselves.
|
|---|
| 172 | mov eax, cr0
|
|---|
| 173 | and eax, ~X86_CR0_PE
|
|---|
| 174 | mov cr0, eax
|
|---|
| 175 |
|
|---|
| 176 | ; All but cs gets reloaded.
|
|---|
| 177 | xor ax, ax
|
|---|
| 178 | mov ss, ax
|
|---|
| 179 | mov ds, ax
|
|---|
| 180 | mov es, ax
|
|---|
| 181 | mov fs, ax
|
|---|
| 182 | mov gs, ax
|
|---|
| 183 |
|
|---|
| 184 | ; Display CS and do a test.
|
|---|
| 185 | mov ax, .s_szzRMEO
|
|---|
| 186 | call TestValueRegSZZ_rm
|
|---|
| 187 |
|
|---|
| 188 | mov ax, [cs:.s_dwDummy] ; works on intel
|
|---|
| 189 | mov dword [cs:.s_dwDummy], 3 ; ditto
|
|---|
| 190 |
|
|---|
| 191 | jmp far 0000:.load_rm_cs
|
|---|
| 192 | .load_rm_cs:
|
|---|
| 193 | ; Display CS to check that it remained unchanged.
|
|---|
| 194 | mov ax, .s_szzRMEO2
|
|---|
| 195 | call TestValueRegSZZ_rm
|
|---|
| 196 |
|
|---|
| 197 | ; Cleanup everything properly.
|
|---|
| 198 | call Bs2EnterMode_rm_pe32
|
|---|
| 199 | BITS 32
|
|---|
| 200 | call Bs2ExitMode_pe32
|
|---|
| 201 | BITS 16
|
|---|
| 202 |
|
|---|
| 203 | popfd
|
|---|
| 204 | pop ebx
|
|---|
| 205 | pop eax
|
|---|
| 206 | ret
|
|---|
| 207 |
|
|---|
| 208 | .s_dwDummy:
|
|---|
| 209 | dd 0
|
|---|
| 210 | .s_szzRMPre:
|
|---|
| 211 | db 'RM Pre - cs:cs', 0;
|
|---|
| 212 | db 'RM Pre - cs_base:cs_base', 0;
|
|---|
| 213 | db 'RM Pre - cs_limit:cs_lim', 0;
|
|---|
| 214 | db 'RM Pre - cs_attr:cs_attr', 0;
|
|---|
| 215 | db 0,0,0,0 ; terminator
|
|---|
| 216 | .s_szzProt32:
|
|---|
| 217 | db 'Prot32 - cs:cs', 0;
|
|---|
| 218 | db 'Prot32 - cs_base:cs_base', 0;
|
|---|
| 219 | db 'Prot32 - cs_limit:cs_lim', 0;
|
|---|
| 220 | db 'Prot32 - cs_attr:cs_attr', 0;
|
|---|
| 221 | db 0,0,0,0 ; terminator
|
|---|
| 222 | .s_szzRMPost:
|
|---|
| 223 | db 'RM Post - cs:cs', 0;
|
|---|
| 224 | db 'RM Post - cs_base:cs_base', 0;
|
|---|
| 225 | db 'RM Post - cs_limit:cs_lim', 0;
|
|---|
| 226 | db 'RM Post - cs_attr:cs_attr', 0;
|
|---|
| 227 | db 0,0,0,0 ; terminator
|
|---|
| 228 | .s_szzProtEO:
|
|---|
| 229 | db 'Prot 16 EO,L-1,NA - cs:cs', 0;
|
|---|
| 230 | db 'Prot 16 EO,L-1,NA - cs_base:cs_base', 0;
|
|---|
| 231 | db 'Prot 16 EO,L-1,NA - cs_limit:cs_lim', 0;
|
|---|
| 232 | db 'Prot 16 EO,L-1,NA - cs_attr:cs_attr', 0;
|
|---|
| 233 | db 0,0,0,0 ; terminator
|
|---|
| 234 | .s_szzRMEO:
|
|---|
| 235 | db 'RM Post EO,L-1,NA - cs:cs', 0;
|
|---|
| 236 | db 'RM Post EO,L-1,NA - cs_base:cs_base', 0;
|
|---|
| 237 | db 'RM Post EO,L-1,NA - cs_limit:cs_lim', 0;
|
|---|
| 238 | db 'RM Post EO,L-1,NA - cs_attr:cs_attr', 0;
|
|---|
| 239 | db 0,0,0,0 ; terminator
|
|---|
| 240 | .s_szzRMEO2:
|
|---|
| 241 | db 'RM CS(0) EO,L-1 - cs:cs', 0;
|
|---|
| 242 | db 'RM CS(0) EO,L-1 - cs_base:cs_base', 0;
|
|---|
| 243 | db 'RM CS(0) EO,L-1 - cs_limit:cs_lim', 0;
|
|---|
| 244 | db 'RM CS(0) EO,L-1 - cs_attr:cs_attr', 0;
|
|---|
| 245 | db 0,0,0,0 ; terminator
|
|---|
| 246 | .s_szTstRM:
|
|---|
| 247 | db 'Real Mode Test', 0
|
|---|
| 248 | ENDPROC rmTests
|
|---|
| 249 |
|
|---|
| 250 |
|
|---|
| 251 |
|
|---|
| 252 | ;
|
|---|
| 253 | ; Instantiate the template code.
|
|---|
| 254 | ;
|
|---|
| 255 | %include "bootsector2-template-footer.mac" ; reset the initial environemnt.
|
|---|
| 256 |
|
|---|
| 257 | %define TMPL_RM
|
|---|
| 258 | %include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 259 | ;%define TMPL_CMN_V86
|
|---|
| 260 | ;%include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 261 | %define TMPL_PE16
|
|---|
| 262 | %include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 263 | %define TMPL_PE32
|
|---|
| 264 | %include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 265 | ;%define TMPL_PP16
|
|---|
| 266 | ;%include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 267 | %define TMPL_PP32
|
|---|
| 268 | %include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 269 | ;%define TMPL_PAE16
|
|---|
| 270 | ;%include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 271 | ;%define TMPL_PAE32
|
|---|
| 272 | ;%include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 273 | ;%define TMPL_LM16
|
|---|
| 274 | ;%include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 275 | ;%define TMPL_LM32
|
|---|
| 276 | ;%include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 277 | %define TMPL_LM64
|
|---|
| 278 | %include "bootsector2-cpu-hidden-regs-1-template.mac"
|
|---|
| 279 |
|
|---|
| 280 |
|
|---|
| 281 | ;
|
|---|
| 282 | ; End sections and image.
|
|---|
| 283 | ;
|
|---|
| 284 | %include "bootsector2-common-end.mac"
|
|---|
| 285 |
|
|---|
