Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 158 insertions, 0 deletions

diff --git a/src/VBox/VMM/VMMRZ/CPUMRZ.cpp b/src/VBox/VMM/VMMRZ/CPUMRZ.cpp
new file mode 100644
index 00000000..3dc62e90
--- /dev/null
+++ b/src/VBox/VMM/VMMRZ/CPUMRZ.cpp
@@ -0,0 +1,158 @@
+/* $Id: CPUMRZ.cpp $ */
+/** @file
+ * CPUM - Raw-mode and ring-0 context.
+ */
+
+/*
+ * Copyright (C) 2016-2023 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>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#define LOG_GROUP LOG_GROUP_CPUM
+#include <VBox/vmm/cpum.h>
+#include "CPUMInternal.h"
+#include <VBox/vmm/vmcc.h>
+
+#include <VBox/err.h>
+#include <VBox/log.h>
+#include <VBox/vmm/hm.h>
+#include <iprt/assert.h>
+#include <iprt/x86.h>
+
+
+
+
+/**
+ * Prepares the host FPU/SSE/AVX stuff for IEM action.
+ *
+ * This will make sure the FPU/SSE/AVX guest state is _not_ loaded in the CPU.
+ * This will make sure the FPU/SSE/AVX host state is saved.
+ * Finally, it will make sure the FPU/SSE/AVX host features can be safely
+ * accessed.
+ *
+ * @param   pVCpu       The cross context virtual CPU structure.
+ */
+VMMRZ_INT_DECL(void)    CPUMRZFpuStatePrepareHostCpuForUse(PVMCPUCC pVCpu)
+{
+    pVCpu->cpum.s.fChanged |= CPUM_CHANGED_FPU_REM;
+    switch (pVCpu->cpum.s.fUseFlags & (CPUM_USED_FPU_GUEST | CPUM_USED_FPU_HOST))
+    {
+        case 0:
+            if (cpumRZSaveHostFPUState(&pVCpu->cpum.s) == VINF_CPUM_HOST_CR0_MODIFIED)
+                HMR0NotifyCpumModifiedHostCr0(pVCpu);
+            Log6(("CPUMRZFpuStatePrepareHostCpuForUse: #0 - %#x\n", ASMGetCR0()));
+            break;
+
+        case CPUM_USED_FPU_HOST:
+            Log6(("CPUMRZFpuStatePrepareHostCpuForUse: #1 - %#x\n", ASMGetCR0()));
+            break;
+
+        case CPUM_USED_FPU_GUEST | CPUM_USED_FPU_HOST:
+            cpumRZSaveGuestFpuState(&pVCpu->cpum.s, true /*fLeaveFpuAccessible*/);
+#ifdef IN_RING0
+            HMR0NotifyCpumUnloadedGuestFpuState(pVCpu);
+#endif
+            Log6(("CPUMRZFpuStatePrepareHostCpuForUse: #2 - %#x\n", ASMGetCR0()));
+            break;
+
+        default:
+            AssertFailed();
+    }
+
+}
+
+
+/**
+ * Makes sure the FPU/SSE/AVX guest state is saved in CPUMCPU::Guest and will be
+ * reloaded before direct use.
+ *
+ * No promisses about the FPU/SSE/AVX host features are made.
+ *
+ * @param   pVCpu       The cross context virtual CPU structure.
+ */
+VMMRZ_INT_DECL(void)    CPUMRZFpuStateActualizeForChange(PVMCPUCC pVCpu)
+{
+    CPUMRZFpuStatePrepareHostCpuForUse(pVCpu);
+}
+
+
+/**
+ * Makes sure the FPU/SSE/AVX state in CPUMCPU::Guest is up to date.
+ *
+ * This will not cause CPUM_USED_FPU_GUEST to change.
+ *
+ * @param   pVCpu       The cross context virtual CPU structure.
+ */
+VMMRZ_INT_DECL(void)    CPUMRZFpuStateActualizeForRead(PVMCPUCC pVCpu)
+{
+    if (pVCpu->cpum.s.fUseFlags & CPUM_USED_FPU_GUEST)
+    {
+        Assert(pVCpu->cpum.s.Guest.fUsedFpuGuest);
+        cpumRZSaveGuestFpuState(&pVCpu->cpum.s, false /*fLeaveFpuAccessible*/);
+        pVCpu->cpum.s.fUseFlags |= CPUM_USED_FPU_GUEST;
+        pVCpu->cpum.s.Guest.fUsedFpuGuest = true;
+        Log7(("CPUMRZFpuStateActualizeForRead\n"));
+    }
+}
+
+
+/**
+ * Makes sure the XMM0..XMM15 and MXCSR state in CPUMCPU::Guest is up to date.
+ *
+ * This will not cause CPUM_USED_FPU_GUEST to change.
+ *
+ * @param   pVCpu       The cross context virtual CPU structure.
+ */
+VMMRZ_INT_DECL(void)    CPUMRZFpuStateActualizeSseForRead(PVMCPUCC pVCpu)
+{
+#if defined(VBOX_WITH_KERNEL_USING_XMM) && HC_ARCH_BITS == 64
+    NOREF(pVCpu);
+#else
+    if (pVCpu->cpum.s.fUseFlags & CPUM_USED_FPU_GUEST)
+    {
+        Assert(pVCpu->cpum.s.Guest.fUsedFpuGuest);
+        cpumRZSaveGuestSseRegisters(&pVCpu->cpum.s);
+        Log7(("CPUMRZFpuStateActualizeSseForRead\n"));
+    }
+#endif
+}
+
+
+/**
+ * Makes sure the YMM0..YMM15 and MXCSR state in CPUMCPU::Guest is up to date.
+ *
+ * This will not cause CPUM_USED_FPU_GUEST to change.
+ *
+ * @param   pVCpu       The cross context virtual CPU structure.
+ */
+VMMRZ_INT_DECL(void)    CPUMRZFpuStateActualizeAvxForRead(PVMCPUCC pVCpu)
+{
+    if (pVCpu->cpum.s.fUseFlags & CPUM_USED_FPU_GUEST)
+    {
+        Assert(pVCpu->cpum.s.Guest.fUsedFpuGuest);
+        cpumRZSaveGuestAvxRegisters(&pVCpu->cpum.s);
+        Log7(("CPUMRZFpuStateActualizeAvxForRead\n"));
+    }
+}
+