1 files changed, 124 insertions, 0 deletions
diff --git a/src/VBox/Runtime/generic/RTMpGetDescription-generic.cpp b/src/VBox/Runtime/generic/RTMpGetDescription-generic.cpp
new file mode 100644
index 00000000..efbe5e16
--- /dev/null
+++ b/src/VBox/Runtime/generic/RTMpGetDescription-generic.cpp
@@ -0,0 +1,124 @@
+/* $Id: RTMpGetDescription-generic.cpp $ */
+/** @file
+ * IPRT - Multiprocessor, Generic RTMpGetDescription.
+ */
+
+/*
+ * Copyright (C) 2009-2023 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 <iprt/mp.h>
+#include "internal/iprt.h"
+#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
+# include <iprt/asm-amd64-x86.h>
+#endif
+#include <iprt/err.h>
+#include <iprt/string.h>
+
+
+
+/**
+ * Returns "Unknown" as description.
+ *
+ * @returns VERR_BUFFER_OVERFLOW or VINF_SUCCESS.
+ * @param   pszBuf              Output buffer.
+ * @param   cbBuf               Buffer size.
+ */
+static int rtMpGetDescriptionUnknown(char *pszBuf, size_t cbBuf)
+{
+    static const char s_szUnknown[] = "Unknown";
+    if (cbBuf < sizeof(s_szUnknown))
+        return VERR_BUFFER_OVERFLOW;
+    memcpy(pszBuf, s_szUnknown, sizeof(s_szUnknown));
+    return VINF_SUCCESS;
+}
+
+
+RTDECL(int) RTMpGetDescription(RTCPUID idCpu, char *pszBuf, size_t cbBuf)
+{
+    /*
+     * Check that the specified cpu is valid & online.
+     */
+    if (idCpu != NIL_RTCPUID && !RTMpIsCpuOnline(idCpu))
+        return RTMpIsCpuPossible(idCpu)
+             ? VERR_CPU_OFFLINE
+             : VERR_CPU_NOT_FOUND;
+
+    /*
+     * Construct the description string in a temporary buffer.
+     */
+    char        szString[4*4*3+1];
+    RT_ZERO(szString);
+#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
+    if (!ASMHasCpuId())
+        return rtMpGetDescriptionUnknown(pszBuf, cbBuf);
+
+    uint32_t    uMax;
+    uint32_t    uEBX, uECX, uEDX;
+    ASMCpuId(0x80000000, &uMax, &uEBX, &uECX, &uEDX);
+    if (uMax >= 0x80000002)
+    {
+        ASMCpuId(0x80000002,     &szString[0  + 0], &szString[0  + 4], &szString[0  + 8], &szString[0  + 12]);
+        if (uMax >= 0x80000003)
+            ASMCpuId(0x80000003, &szString[16 + 0], &szString[16 + 4], &szString[16 + 8], &szString[16 + 12]);
+        if (uMax >= 0x80000004)
+            ASMCpuId(0x80000004, &szString[32 + 0], &szString[32 + 4], &szString[32 + 8], &szString[32 + 12]);
+    }
+    else
+    {
+        ASMCpuId(0x00000000, &uMax, &uEBX, &uECX, &uEDX);
+        ((uint32_t *)&szString[0])[0] = uEBX;
+        ((uint32_t *)&szString[0])[1] = uEDX;
+        ((uint32_t *)&szString[0])[2] = uECX;
+    }
+
+#elif defined(RT_ARCH_ARM64)
+    RTCCINTREG uFreq;
+
+#else
+# error "PORTME or use RTMpGetDescription-generic-stub.cpp."
+#endif
+
+    /*
+     * Copy it out into the buffer supplied by the caller.
+     */
+    char   *pszSrc = RTStrStrip(szString);
+    size_t  cchSrc = strlen(pszSrc);
+    if (cchSrc >= cbBuf)
+        return VERR_BUFFER_OVERFLOW;
+    memcpy(pszBuf, pszSrc, cchSrc + 1);
+    return VINF_SUCCESS;
+}
+RT_EXPORT_SYMBOL(RTMpGetDescription);
+