Changeset 103880 in vbox for trunk/src/VBox/VMM/include/IEMMc.h

Timestamp:

Mar 17, 2024 11:03:50 AM (11 months ago)

Author:

vboxsync

Message:

VMM/IEM: fix some issues which byte me while improving vpextrb emulation, bugref:9898

• IEM_MC_FETCH_XREG_U8() fetch a byte, not a word
• iemNativeEmitSimdLoadGprFromVecRegU8() load a byte, not a word

File:

• trunk/src/VBox/VMM/include/IEMMc.h (modified) (1 diff)

trunk/src/VBox/VMM/include/IEMMc.h

@@ -475 +475 @@
     do { (a_u16Value) = pVCpu->cpum.GstCtx.XState.x87.aXMM[(a_iXReg)].au16[(a_iWord)]; } while (0)
 #define IEM_MC_FETCH_XREG_U8( a_u8Value,  a_iXReg, a_iByte) \
-    do { (a_u8Value)  = pVCpu->cpum.GstCtx.XState.x87.aXMM[(a_iXReg)].au16[(a_iByte)]; } while (0)
+    do { (a_u8Value)  = pVCpu->cpum.GstCtx.XState.x87.aXMM[(a_iXReg)].au8[(a_iByte)]; } while (0)
 #define IEM_MC_FETCH_XREG_PAIR_U128(a_Dst, a_iXReg1, a_iXReg2) \
     do { (a_Dst).uSrc1.au64[0] = pVCpu->cpum.GstCtx.XState.x87.aXMM[(a_iXReg1)].au64[0]; \