Changeset 103922 in vbox for trunk/src/VBox/VMM/include

Timestamp:

Mar 19, 2024 4:10:02 PM (11 months ago)

Author:

vboxsync

Message:

VMM/IEM: Fixed the remaining decoding issues with vblendvps/d. bugref:9898

Location:

trunk/src/VBox/VMM/include

Files:

• IEMInternal.h (modified) (1 diff)
• IEMOpHlp.h (modified) (1 diff)

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

@@ -4981 +4981 @@
 #define IEM_GET_EFFECTIVE_VVVV(a_pVCpu) \
     (IEM_IS_64BIT_CODE(a_pVCpu) ? (a_pVCpu)->iem.s.uVex3rdReg : (a_pVCpu)->iem.s.uVex3rdReg & 7)
+
+
+/**
+ * Gets the register (reg) part of a the special 4th register byte used by
+ * vblendvps and vblendvpd.
+ *
+ * For use during decoding.
+ */
+#define IEM_GET_IMM8_REG(a_pVCpu, a_bRegImm8) \
+    (IEM_IS_64BIT_CODE(a_pVCpu) ? (a_bRegImm8) >> 4 : ((a_bRegImm8) >> 4) & 7)
 
 

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

@@ -526 +526 @@
 /**
  * Done decoding VEX instruction, raise \#UD exception if any lock, rex, repz,
+ * repnz or size prefixes are present, or if VEX.W is one, or if in real or
+ * v8086 mode, or if the a_fFeature is not present in the guest CPU.
+ */
+#define IEMOP_HLP_DONE_VEX_DECODING_W0_EX(a_fFeature) \
+    do \
+    { \
+        if (RT_LIKELY(   !(  pVCpu->iem.s.fPrefixes \
+                           & (IEM_OP_PRF_LOCK | IEM_OP_PRF_REPZ | IEM_OP_PRF_REPNZ | IEM_OP_PRF_SIZE_OP | IEM_OP_PRF_REX \
+                              | IEM_OP_PRF_SIZE_REX_W /*VEX.W*/)) \
+                      && !IEM_IS_REAL_OR_V86_MODE(pVCpu) \
+                      && IEM_GET_GUEST_CPU_FEATURES(pVCpu)->a_fFeature)) \
+        { /* likely */ } \
+        else \
+            IEMOP_RAISE_INVALID_OPCODE_RET(); \
+    } while (0)
+
+/**
+ * Done decoding VEX instruction, raise \#UD exception if any lock, rex, repz,
  * repnz or size prefixes are present, or if the VEX.VVVV field doesn't indicate
  * register 0, if in real or v8086 mode, or if the a_fFeature is not present in