Changeset 102377 in vbox for trunk/include

Timestamp:

Nov 29, 2023 11:12:52 AM (17 months ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

160513

Message:

VMM/IEM: Use UBFX instead of BFI for loading a high 8-bit register into a GPR (iemNativeEmitLoadGprFromGpr8Hi). bugref:10371

File:

• trunk/include/iprt/armv8.h (modified) (2 diffs)

trunk/include/iprt/armv8.h

@@ -3033 +3033 @@
 
 
-/** A64: Encodes a BFI instruction.
+/** A64: Encodes a BFI instruction (insert).
  * @see Armv8A64MkInstrBitfieldImm for parameter details.  */
 DECL_FORCE_INLINE(uint32_t) Armv8A64MkInstrBfi(uint32_t iRegResult, uint32_t iRegSrc,
@@ -3050 +3050 @@
 {
     return Armv8A64MkInstrBitfieldImm(2, iRegResult, iRegSrc, cImm6Ror, uImm6S, f64Bit, uN1 == UINT32_MAX ? f64Bit : uN1);
+}
+
+
+/** A64: Encodes an UBFX instruction (zero extending extract).
+ * @see Armv8A64MkInstrBitfieldImm for parameter details.  */
+DECL_FORCE_INLINE(uint32_t) Armv8A64MkInstrUbfx(uint32_t iRegResult, uint32_t iRegSrc,
+                                                uint32_t offFirstBit, uint32_t cBitsWidth, bool f64Bit = true)
+{
+    return Armv8A64MkInstrUbfm(iRegResult, iRegSrc, offFirstBit, offFirstBit + cBitsWidth - 1, f64Bit);
 }