Changeset 14521 in vbox

Timestamp:

Nov 24, 2008 2:48:30 PM (16 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

39809

Message:

Added GetProcessorFeature method to IHost.

Location:

trunk/src/VBox/Main

Files:

• HostImpl.cpp (modified) (1 diff)
• idl/VirtualBox.xidl (modified) (3 diffs)
• include/HostImpl.h (modified) (1 diff)

trunk/src/VBox/Main/HostImpl.cpp

@@ -1176 +1176 @@
 }
 
+/**
+ * Returns whether a host processor feature is supported or not
+ *
+ * @returns COM status code
+ * @param   Feature to query.
+ * @param   address of supported bool result variable
+ */
+STDMETHODIMP Host::GetProcessorFeature(ProcessorFeature_T feature, BOOL *supported)
+{
+    if (!supported)
+        return E_POINTER;
+    AutoWriteLock alock (this);
+    CHECK_READY();
+
+    bool fVTxAMDVSupported = false;
+    bool fLongModeSupported = false;
+    bool fPAESupported = false;
+
+    if (ASMHasCpuId())
+    {
+        uint32_t u32FeaturesECX;
+        uint32_t u32Dummy;
+        uint32_t u32FeaturesEDX;
+        uint32_t u32VendorEBX, u32VendorECX, u32VendorEDX, u32AMDFeatureEDX, u32AMDFeatureECX;
+
+        ASMCpuId (0, &u32Dummy, &u32VendorEBX, &u32VendorECX, &u32VendorEDX);
+        ASMCpuId (1, &u32Dummy, &u32Dummy, &u32FeaturesECX, &u32FeaturesEDX);
+        /* Query AMD features. */
+        ASMCpuId (0x80000001, &u32Dummy, &u32Dummy, &u32AMDFeatureECX, &u32AMDFeatureEDX);
+
+        fLongModeSupported = !!(u32AMDFeatureEDX & X86_CPUID_AMD_FEATURE_EDX_LONG_MODE);
+        fPAESupported      = !!(u32FeaturesEDX & X86_CPUID_FEATURE_EDX_PAE);
+
+        if (    u32VendorEBX == X86_CPUID_VENDOR_INTEL_EBX
+            &&  u32VendorECX == X86_CPUID_VENDOR_INTEL_ECX
+            &&  u32VendorEDX == X86_CPUID_VENDOR_INTEL_EDX
+           )
+        {
+            if (    (u32FeaturesECX & X86_CPUID_FEATURE_ECX_VMX)
+                 && (u32FeaturesEDX & X86_CPUID_FEATURE_EDX_MSR)
+                 && (u32FeaturesEDX & X86_CPUID_FEATURE_EDX_FXSR)
+               )
+                fVTxAMDVSupported = true;
+        }
+        else
+        if (    u32VendorEBX == X86_CPUID_VENDOR_AMD_EBX
+            &&  u32VendorECX == X86_CPUID_VENDOR_AMD_ECX
+            &&  u32VendorEDX == X86_CPUID_VENDOR_AMD_EDX
+           )
+        {
+            if (   (u32AMDFeatureECX & X86_CPUID_AMD_FEATURE_ECX_SVM)
+                && (u32FeaturesEDX & X86_CPUID_FEATURE_EDX_MSR)
+                && (u32FeaturesEDX & X86_CPUID_FEATURE_EDX_FXSR)
+               )
+                fVTxAMDVSupported = true;
+        }
+    }
+
+    switch (feature)
+    {
+    case ProcessorFeature_HWVirtEx:
+        *supported = fVTxAMDVSupported;
+        break;
+
+    case ProcessorFeature_PAE:
+        *supported = fPAESupported;
+        break;
+
+    case ProcessorFeature_LongMode:
+        *supported = fLongModeSupported;
+        break;
+
+    default:
+        return E_NOTIMPL;
+    }
+    return S_OK;
+}
 
 /**

trunk/src/VBox/Main/idl/VirtualBox.xidl

@@ -611 +611 @@
   </enum>
 
+  <enum
+    name="ProcessorFeature"
+    uuid="b8353b35-705d-4796-9967-ebfb7ba54af4"
+  >
+    <desc>
+      CPU features.
+    </desc>
+
+    <const name="HWVirtEx"        value="0"/>
+    <const name="PAE"             value="1"/>
+    <const name="LongMode"        value="2"/>
+  </enum>
+
 
   <!--
@@ -5032 +5045 @@
   <interface
      name="IHost" extends="$unknown"
-     uuid="489fb370-c227-4d43-9761-ceb28484fd9f"
+     uuid="4be2e85f-a54c-4bc7-8bf6-f070f9113940"
      wsmap="managed"
      >
@@ -5119 +5132 @@
           Speed value. 0 is returned if value is not known or @a cpuId is
           invalid.
+        </desc>
+      </param>
+    </method>
+
+    <method name="getProcessorFeature">
+      <desc>Query whether a CPU feature is supported or not.</desc>
+      <param name="feature" type="ProcessorFeature" dir="in">
+        <desc>
+          CPU Feature identifier.
+        </desc>
+      </param>
+      <param name="supported" type="boolean" dir="return">
+        <desc>
+          Feature is supported or not.
         </desc>
       </param>

trunk/src/VBox/Main/include/HostImpl.h

@@ -86 +86 @@
     STDMETHOD(GetProcessorSpeed)(ULONG cpuId, ULONG *speed);
     STDMETHOD(GetProcessorDescription)(ULONG cpuId, BSTR *description);
+    STDMETHOD(GetProcessorFeature) (ProcessorFeature_T feature, BOOL *supported);
     STDMETHOD(COMGETTER(MemorySize))(ULONG *size);
     STDMETHOD(COMGETTER(MemoryAvailable))(ULONG *available);