Changeset 98887 in vbox

Timestamp:

Mar 9, 2023 11:18:21 AM (21 months ago)

Author:

vboxsync

Message:

VMM/IEM: Implement mpsadbw instruction emulation ,bugref:9898

Location:

trunk/src/VBox/VMM

Files:

• VMMAll/IEMAllAImpl.asm (modified) (1 diff)
• VMMAll/IEMAllAImplC.cpp (modified) (1 diff)
• VMMAll/IEMAllInstructionsThree0f3a.cpp.h (modified) (1 diff)
• include/IEMInternal.h (modified) (1 diff)

trunk/src/VBox/VMM/VMMAll/IEMAllAImpl.asm

@@ -5158 +5158 @@
 IEMIMPL_MEDIA_SSE_INSN_IMM8_6 pclmulqdq
 IEMIMPL_MEDIA_SSE_INSN_IMM8_6 aeskeygenassist
+IEMIMPL_MEDIA_SSE_INSN_IMM8_6 mpsadbw
 
 

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

@@ -18051 +18051 @@
     ADX_EMIT(X86_EFL_OF, uint64_t, UINT64_MAX);
 }
+
+
+/**
+ * MPSADBW
+ */
+IEM_DECL_IMPL_DEF(void, iemAImpl_mpsadbw_u128_fallback,(PRTUINT128U puDst, PCRTUINT128U puSrc, uint8_t bEvil))
+{
+    uint8_t idxSrc2 = (bEvil & 0x3) * sizeof(uint32_t);
+    uint8_t idxSrc1 = ((bEvil >> 2) & 0x1) * sizeof(uint32_t);
+    int16_t ai16Src1[11];
+    int16_t ai16Src2[4];
+
+    for (uint32_t i = 0; i < RT_ELEMENTS(ai16Src1); i++)
+        ai16Src1[i] = puDst->au8[idxSrc1 + i];
+
+    for (uint32_t i = 0; i < RT_ELEMENTS(ai16Src2); i++)
+        ai16Src2[i] = puSrc->au8[idxSrc2 + i];
+
+    for (uint8_t i = 0; i < RT_ELEMENTS(puDst->au16); i++)
+        puDst->au16[i] =   RT_ABS(ai16Src1[i]     - ai16Src2[0])
+                         + RT_ABS(ai16Src1[i + 1] - ai16Src2[1])
+                         + RT_ABS(ai16Src1[i + 2] - ai16Src2[2])
+                         + RT_ABS(ai16Src1[i + 3] - ai16Src2[3]);
+}

trunk/src/VBox/VMM/VMMAll/IEMAllInstructionsThree0f3a.cpp.h

@@ -1033 +1033 @@
 /** Opcode 0x66 0x0f 0x41, */
 FNIEMOP_STUB(iemOp_dppd_Vdq_Wdq_Ib);
+
+
 /** Opcode 0x66 0x0f 0x42. */
-FNIEMOP_STUB(iemOp_mpsadbw_Vx_Wx_Ib);
+FNIEMOP_DEF(iemOp_mpsadbw_Vx_Wx_Ib)
+{
+    IEMOP_MNEMONIC3(RMI, MPSADBW, mpsadbw, Vx, Wx, Ib, DISOPTYPE_HARMLESS | DISOPTYPE_SSE, 0);
+    return FNIEMOP_CALL_1(iemOpCommonSse41_FullFullImm8_To_Full,
+                          IEM_SELECT_HOST_OR_FALLBACK(fSse41, iemAImpl_mpsadbw_u128, iemAImpl_mpsadbw_u128_fallback));
+}
+
+
 /*  Opcode 0x66 0x0f 0x43 - invalid */
 

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

@@ -2443 +2443 @@
 FNIEMAIMPLMEDIAOPTF2U128IMM8 iemAImpl_pclmulqdq_u128, iemAImpl_pclmulqdq_u128_fallback;
 FNIEMAIMPLMEDIAOPTF3U128IMM8 iemAImpl_vpclmulqdq_u128, iemAImpl_vpclmulqdq_u128_fallback;
+
+FNIEMAIMPLMEDIAOPTF2U128IMM8 iemAImpl_mpsadbw_u128, iemAImpl_mpsadbw_u128_fallback;
 /** @} */