Changeset 105488 in vbox

Timestamp:

Jul 24, 2024 2:37:18 PM (4 months ago)

Author:

vboxsync

Message:

VMM/IEM/IEMAllInstTwoByte0f.cpp.h: Fix the register flush mask for fxrstor (modifies MXCSR), stmxcsr (will only read MXCSR and dirty shadows are written back before the call to the C helper) and xrstor (modifies MXCSR), bugref:10652

File:

• trunk/src/VBox/VMM/VMMAll/IEMAllInstTwoByte0f.cpp.h (modified) (3 diffs)

trunk/src/VBox/VMM/VMMAll/IEMAllInstTwoByte0f.cpp.h

@@ -9682 +9682 @@
     IEM_MC_ARG_CONST(uint8_t,   iEffSeg,      /*=*/ pVCpu->iem.s.iEffSeg,       0);
     IEM_MC_ARG_CONST(IEMMODE,   enmEffOpSize, /*=*/pVCpu->iem.s.enmEffOpSize,   2);
-    IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_FpuFcw) | RT_BIT_64(kIemNativeGstReg_FpuFsw),
+    IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_FpuFcw) | RT_BIT_64(kIemNativeGstReg_FpuFsw) | RT_BIT_64(kIemNativeGstReg_MxCsr),
                         iemCImpl_fxrstor, iEffSeg, GCPtrEff, enmEffOpSize);
     IEM_MC_END();
@@ -9754 +9754 @@
     IEM_MC_ACTUALIZE_SSE_STATE_FOR_READ();
     IEM_MC_ARG_CONST(uint8_t,   iEffSeg, /*=*/ pVCpu->iem.s.iEffSeg,     0);
-    IEM_MC_CALL_CIMPL_2(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_MxCsr), iemCImpl_stmxcsr, iEffSeg, GCPtrEff);
+    IEM_MC_CALL_CIMPL_2(IEM_CIMPL_F_FPU, 0, iemCImpl_stmxcsr, iEffSeg, GCPtrEff);
     IEM_MC_END();
 }
@@ -9806 +9806 @@
     IEM_MC_ARG_CONST(uint8_t,   iEffSeg,      /*=*/ pVCpu->iem.s.iEffSeg,       0);
     IEM_MC_ARG_CONST(IEMMODE,   enmEffOpSize, /*=*/ pVCpu->iem.s.enmEffOpSize,  2);
-    IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_FpuFcw) | RT_BIT_64(kIemNativeGstReg_FpuFsw),
+    IEM_MC_CALL_CIMPL_3(IEM_CIMPL_F_FPU, RT_BIT_64(kIemNativeGstReg_FpuFcw) | RT_BIT_64(kIemNativeGstReg_FpuFsw) | RT_BIT_64(kIemNativeGstReg_MxCsr),
                         iemCImpl_xrstor, iEffSeg, GCPtrEff, enmEffOpSize);
     IEM_MC_END();