Changeset 96634 in vbox for trunk/src/VBox

Timestamp:

Sep 7, 2022 3:18:28 PM (2 years ago)

Author:

vboxsync

Message:

VMM/IEM: Split the 128-bit copy into two 64-bit ones because at least gcc will emit a movaps instruction otherwise which crashes due to a misaligned destination (on Ubuntu 16.04.1 i386 and TinyCore Linux 13.1 i386), bugref:9898

File:

• trunk/src/VBox/VMM/VMMAll/IEMAllCImpl.cpp (modified) (1 diff)

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

@@ -8659 +8659 @@
         uint32_t cXmmRegs = enmEffOpSize == IEMMODE_64BIT ? 16 : 8;
         for (uint32_t i = 0; i < cXmmRegs; i++)
-            pCompDst->aYmmHi[i] = pCompSrc->aYmmHi[i];
+        {
+            pCompDst->aYmmHi[i].au64[0] = pCompSrc->aYmmHi[i].au64[0];
+            pCompDst->aYmmHi[i].au64[1] = pCompSrc->aYmmHi[i].au64[1];
+        }
 
         rcStrict = iemMemCommitAndUnmap(pVCpu, pCompDst, IEM_ACCESS_DATA_W | IEM_ACCESS_PARTIAL_WRITE);