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Diffstat (limited to '')
-rw-r--r-- | src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-TestQueryCfgU32.asm | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-TestQueryCfgU32.asm b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-TestQueryCfgU32.asm new file mode 100644 index 00000000..953b1e6d --- /dev/null +++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-TestQueryCfgU32.asm @@ -0,0 +1,94 @@ +; $Id: bs3-cmn-TestQueryCfgU32.asm $ +;; @file +; BS3Kit - Bs3TestQueryCfgU8. +; + +; +; Copyright (C) 2007-2023 Oracle and/or its affiliates. +; +; This file is part of VirtualBox base platform packages, as +; available from https://www.virtualbox.org. +; +; This program is free software; you can redistribute it and/or +; modify it under the terms of the GNU General Public License +; as published by the Free Software Foundation, in version 3 of the +; License. +; +; This program is distributed in the hope that it will be useful, but +; WITHOUT ANY WARRANTY; without even the implied warranty of +; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +; General Public License for more details. +; +; You should have received a copy of the GNU General Public License +; along with this program; if not, see <https://www.gnu.org/licenses>. +; +; The contents of this file may alternatively be used under the terms +; of the Common Development and Distribution License Version 1.0 +; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included +; in the VirtualBox distribution, in which case the provisions of the +; CDDL are applicable instead of those of the GPL. +; +; You may elect to license modified versions of this file under the +; terms and conditions of either the GPL or the CDDL or both. +; +; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 +; + +%include "bs3kit-template-header.mac" +%include "VBox/VMMDevTesting.mac" + +BS3_EXTERN_DATA16 g_fbBs3VMMDevTesting +TMPL_BEGIN_TEXT + +;; +; @cproto BS3_DECL(uint32_t) Bs3TestQueryCfgU32(uint16_t uCfg); +; +BS3_PROC_BEGIN_CMN Bs3TestQueryCfgU32, BS3_PBC_HYBRID + BS3_CALL_CONV_PROLOG 1 + push xBP + mov xBP, xSP +TNOT16 push xDX + + cmp byte [BS3_DATA16_WRT(g_fbBs3VMMDevTesting)], 0 + je .no_vmmdev + + ; Issue the query command. + mov dx, VMMDEV_TESTING_IOPORT_CMD +%if TMPL_BITS == 16 + mov ax, VMMDEV_TESTING_CMD_QUERY_CFG - VMMDEV_TESTING_CMD_MAGIC_HI_WORD + out dx, ax +%else + mov eax, VMMDEV_TESTING_CMD_QUERY_CFG + out dx, eax +%endif + + ; Write what we wish to query. + mov ax, [xBP + xCB + cbCurRetAddr] + mov dx, VMMDEV_TESTING_IOPORT_DATA + out dx, ax + + ; Read back the result. +%if TMPL_BITS == 16 + in ax, dx + push ax + in ax, dx + mov dx, ax + pop ax +%else + in eax, dx +%endif + +.return: +TNOT16 pop xDX + pop xBP + BS3_CALL_CONV_EPILOG 1 + BS3_HYBRID_RET + +.no_vmmdev: + xor xAX, xAX +%if TMPL_BITS == 16 + xor xDX, xDX +%endif + jmp .return +BS3_PROC_END_CMN Bs3TestQueryCfgU32 + |