Changeset 40169 in vbox

Timestamp:

Feb 17, 2012 2:20:55 PM (13 years ago)

Author:

vboxsync

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

76325

Message:

IEM: fnclex.

Location:

trunk/src/VBox/VMM

Files:

• VMMAll/IEMAll.cpp (modified) (1 diff)
• VMMAll/IEMAllInstructions.cpp.h (modified) (1 diff)
• testcase/tstIEMCheckMc.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMAll/IEMAll.cpp

@@ -5693 +5693 @@
 #define IEM_MC_FLIP_EFL_BIT(a_fBit)                     do { (pIemCpu)->CTX_SUFF(pCtx)->eflags.u ^= (a_fBit); } while (0)
 
+#define IEM_MC_CLEAR_FSW_EX()   do { (pIemCpu)->CTX_SUFF(pCtx)->fpu.FSW &= X86_FSW_C_MASK | X86_FSW_TOP_MASK; } while (0)
 
 

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

@@ -10784 +10784 @@
 
 /** Opcode 0xdb 0xe2. */
-FNIEMOP_STUB(iemOp_fnclex);
+FNIEMOP_DEF(iemOp_fnclex)
+{
+    IEMOP_MNEMONIC("fnclex");
+    IEM_MC_BEGIN(0,0);
+    IEM_MC_CLEAR_FSW_EX();
+    IEM_MC_ADVANCE_RIP();
+    IEM_MC_END();
+    return VINF_SUCCESS;
+}
 
 

trunk/src/VBox/VMM/testcase/tstIEMCheckMc.cpp

@@ -335 +335 @@
 #define IEM_MC_CLEAR_EFL_BIT(a_fBit)                    do { CHK_SINGLE_BIT(uint32_t, a_fBit); } while (0)
 #define IEM_MC_FLIP_EFL_BIT(a_fBit)                     do { CHK_SINGLE_BIT(uint32_t, a_fBit); } while (0)
+#define IEM_MC_CLEAR_FSW_EX()                           do { } while (0)
 
 #define IEM_MC_FETCH_MEM_U8(a_u8Dst, a_iSeg, a_GCPtrMem)                do { CHK_GCPTR(a_GCPtrMem); } while (0)