Changeset 101376 in vbox for trunk/src/VBox/VMM

Timestamp:

Oct 6, 2023 8:24:35 AM (14 months ago)

Author:

vboxsync

Message:

VMM/IEM: Implement vmpsadbw instruction emulations, bugref:9898

Location:

trunk/src/VBox/VMM

Files:

• VMMAll/IEMAllAImpl.asm (modified) (1 diff)
• VMMAll/IEMAllAImplC.cpp (modified) (1 diff)
• VMMAll/IEMAllInstVexMap3.cpp.h (modified) (1 diff)
• include/IEMInternal.h (modified) (1 diff)

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

@@ -5420 +5420 @@
 IEMIMPL_MEDIA_AVX_INSN_IMM8_6 vperm2i128, 0, 1
 IEMIMPL_MEDIA_AVX_INSN_IMM8_6 vperm2f128, 0, 1
+IEMIMPL_MEDIA_AVX_INSN_IMM8_6 vmpsadbw,   1, 1
 
 

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

@@ -18446 +18446 @@
 
 
+IEM_DECL_IMPL_DEF(void, iemAImpl_vmpsadbw_u128_fallback,(PRTUINT128U puDst, PCRTUINT128U puSrc1, PCRTUINT128U puSrc2, 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] = puSrc1->au8[idxSrc1 + i];
+
+    for (uint32_t i = 0; i < RT_ELEMENTS(ai16Src2); i++)
+        ai16Src2[i] = puSrc2->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]);
+}
+
+
+IEM_DECL_IMPL_DEF(void, iemAImpl_vmpsadbw_u256_fallback,(PRTUINT256U puDst, PCRTUINT256U puSrc1, PCRTUINT256U puSrc2, uint8_t bEvil))
+{
+    RTUINT256U const uSrc1 = *puSrc1; /* Might overlap with destination. */
+    RTUINT256U const uSrc2 = *puSrc2;
+//? ASMCompilerBarrier();
+
+    iemAImpl_vmpsadbw_u128_fallback(&puDst->au128[0], &uSrc1.au128[0], &uSrc2.au128[0], bEvil);
+    iemAImpl_vmpsadbw_u128_fallback(&puDst->au128[1], &uSrc1.au128[1], &uSrc2.au128[1], bEvil >> 3);
+}
+
+
 /**
  * VPERM2I128

trunk/src/VBox/VMM/VMMAll/IEMAllInstVexMap3.cpp.h

@@ -570 +570 @@
 /** Opcode VEX.66.0F3A 0x41, */
 FNIEMOP_STUB(iemOp_vdppd_Vdq_Hdq_Wdq_Ib);
-/** Opcode VEX.66.0F3A 0x42. */
-FNIEMOP_STUB(iemOp_vmpsadbw_Vx_Hx_Wx_Ib);
+
+/** Opcode VEX.66.0F3A 0x42.
+ * AVX,AVX2 */
+FNIEMOP_DEF(iemOp_vmpsadbw_Vx_Hx_Wx_Ib)
+{
+    IEMOP_MNEMONIC3(VEX_RVM, VMPSADBW, vmpsadbw, Vx, Hx, Wx, DISOPTYPE_HARMLESS, 0); /** @todo */
+    IEMOPMEDIAOPTF3IMM8_INIT_VARS(vmpsadbw);
+    return FNIEMOP_CALL_1(iemOpCommonAvxAvx_Vx_Hx_Wx_Ib_Opt, IEM_SELECT_HOST_OR_FALLBACK(fAvx, &s_Host, &s_Fallback));
+}
+
+
 /*  Opcode VEX.66.0F3A 0x43 - invalid */
 

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

@@ -3191 +3191 @@
 
 FNIEMAIMPLMEDIAOPTF2U128IMM8 iemAImpl_mpsadbw_u128, iemAImpl_mpsadbw_u128_fallback;
+FNIEMAIMPLMEDIAOPTF3U128IMM8 iemAImpl_vmpsadbw_u128, iemAImpl_vmpsadbw_u128_fallback;
+FNIEMAIMPLMEDIAOPTF3U256IMM8 iemAImpl_vmpsadbw_u256, iemAImpl_vmpsadbw_u256_fallback;
 /** @} */