Changeset 65493 in vbox

Timestamp:

Jan 27, 2017 11:24:29 PM (8 years ago)

Author:

vboxsync

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

113123

Message:

CPUM,PGM: cmpxchg16b work (stats).

Location:

trunk

Files:

• include/VBox/vmm/cpum.h (modified) (2 diffs)
• src/VBox/VMM/VMMAll/IEMAllInstructions.cpp.h (modified) (1 diff)
• src/VBox/VMM/VMMR3/CPUMR3CpuId.cpp (modified) (1 diff)

trunk/include/VBox/vmm/cpum.h

@@ -997 +997 @@
     /** MWAIT Extensions present. */
     uint32_t        fMWaitExtensions : 1;
+    /** Supports CMPXCHG16B in 64-bit mode. */
+    uint32_t        fMovCmpXchg16b : 1;
 
     /** Supports AMD 3DNow instructions. */
@@ -1022 +1024 @@
 
     /** Alignment padding / reserved for future use. */
-    uint32_t        fPadding : 29;
+    uint32_t        fPadding : 28;
     uint32_t        auPadding[3];
 } CPUMFEATURES;

trunk/src/VBox/VMM/VMMAll/IEMAllInstructions.cpp.h

@@ -6828 +6828 @@
 
 /** Opcode REX.W 0x0f 0xc7 !11/1. */
-FNIEMOP_STUB_1(iemOp_Grp9_cmpxchg16b_Mdq, uint8_t, bRm);
+FNIEMOP_DEF_1(iemOp_Grp9_cmpxchg16b_Mdq, uint8_t, bRm)
+{
+    IEMOP_MNEMONIC(cmpxchg16b, "cmpxchg16b Mdq");
+    if (IEM_GET_GUEST_CPU_FEATURES(pVCpu)->fMovCmpXchg16b)
+    {
+        RT_NOREF(bRm);
+        IEMOP_BITCH_ABOUT_STUB();
+        return VERR_IEM_INSTR_NOT_IMPLEMENTED;
+    }
+    Log(("cmpxchg16b -> #UD\n"));
+    return IEMOP_RAISE_INVALID_OPCODE();
+}
+
 
 /** Opcode 0x0f 0xc7 11/6. */

trunk/src/VBox/VMM/VMMR3/CPUMR3CpuId.cpp

@@ -1630 +1630 @@
         pFeatures->fHypervisorPresent   = RT_BOOL(pStd1Leaf->uEcx & X86_CPUID_FEATURE_ECX_HVP);
         pFeatures->fMonitorMWait        = RT_BOOL(pStd1Leaf->uEcx & X86_CPUID_FEATURE_ECX_MONITOR);
+        pFeatures->fMovCmpXchg16b       = RT_BOOL(pStd1Leaf->uEcx & X86_CPUID_FEATURE_ECX_CX16);
 
         /* Structured extended features. */