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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
commitf215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch)
tree6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/ValidationKit/bootsectors/bs3kit/bs3-shutdown.c
parentInitial commit. (diff)
downloadvirtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz
virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/ValidationKit/bootsectors/bs3kit/bs3-shutdown.c')
-rw-r--r--src/VBox/ValidationKit/bootsectors/bs3kit/bs3-shutdown.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-shutdown.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-shutdown.c
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+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-shutdown.c
@@ -0,0 +1,87 @@
+/* $Id: bs3-shutdown.c $ */
+/** @file
+ * BS3Kit - Shutdown VM from PE16 - proof of concept (BS3Kit).
+ */
+
+/*
+ * 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
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include "bs3kit.h"
+#include <iprt/assert.h>
+#include <iprt/asm-amd64-x86.h>
+
+AssertCompileSize(uint16_t, 2);
+AssertCompileSize(uint32_t, 4);
+AssertCompileSize(uint64_t, 8);
+
+extern uint16_t ASMGetMsw();
+#pragma aux ASMGetMsw = \
+ ".286" \
+ "smsw ax" \
+ value [ax] \
+ modify exact;
+
+extern void ASMSetMsw(uint16_t uMsw);
+#pragma aux ASMSetMsw = \
+ ".286p" \
+ "lmsw ax" \
+ parm [ax] \
+ modify exact;
+
+/* Just a sample. */
+BS3_DECL(void) Main_pe16(void)
+{
+ uint16_t uMsw = ASMGetMsw();
+ Bs3Printf("msw=%#x cr0=%RX32 g_uBs3CpuDetected=%#x\n", uMsw, ASMGetCR0(), g_uBs3CpuDetected);
+ Bs3Printf("cr2=%RX32 cr3=%RX32\n", ASMGetCR2(), ASMGetCR3());
+ ASMSetMsw(X86_CR0_PE);
+ Bs3Printf("lmsw(PE) => msw=%#x cr0=%RX32\n", ASMGetMsw(), ASMGetCR0());
+ ASMSetMsw(UINT16_MAX);
+ Bs3Printf("lmsw(0xffff) => msw=%#x cr0=%RX32\n", ASMGetMsw(), ASMGetCR0());
+ ASMSetCR0(X86_CR0_PE);
+ Bs3Printf("ASMSetCR0(X86_CR0_PE) => msw=%#x cr0=%RX32\n", ASMGetMsw(), ASMGetCR0());
+ ASMSetCR0(UINT32_C(0x7fffffff));
+ Bs3Printf("ASMSetCR0(0x7fffffff) => msw=%#x cr0=%RX32\n", ASMGetMsw(), ASMGetCR0());
+
+ Bs3TestInit("bs3-shutdown");
+ Bs3TestPrintf("detected cpu: %#x\n", g_uBs3CpuDetected);
+#if 1
+ ASMHalt();
+#else
+ Bs3Shutdown();
+#endif
+ return;
+}
+