Changeset 102082 in vbox for trunk/src/VBox/VMM/include

Timestamp:

Nov 13, 2023 12:57:44 PM (18 months ago)

Author:

vboxsync

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

160193

Message:

VMM/IEM: Native translation of IEM_MC_FETCH_GREG_U8_THREADED. bugref:10371

File:

• trunk/src/VBox/VMM/include/IEMN8veRecompilerEmit.h (modified) (5 diffs)

trunk/src/VBox/VMM/include/IEMN8veRecompilerEmit.h

@@ -662 +662 @@
     /* movzx Gv,Eb */
     uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 4);
-    if ((iGprDst | iGprSrc) >= 8)
+    if (iGprDst >= 8 || iGprSrc >= 8)
         pbCodeBuf[off++] = iGprDst < 8  ? X86_OP_REX_B
                          : iGprSrc >= 8 ? X86_OP_REX_R | X86_OP_REX_B
                          :                X86_OP_REX_R;
+    else if (iGprSrc >= 4)
+        pbCodeBuf[off++] = X86_OP_REX;
     pbCodeBuf[off++] = 0x0f;
     pbCodeBuf[off++] = 0xb6;
@@ -688 +690 @@
 }
 
-#if 0 /** @todo */
+
 /**
  * Emits a gprdst = gprsrc[15:8] load (ah, ch, dh, bh).
@@ -694 +696 @@
  */
 DECL_INLINE_THROW(uint32_t)
-iemNativeEmitLoadGprFromGpr8hi(PIEMRECOMPILERSTATE pReNative, uint32_t off, uint8_t iGprDst, uint8_t iGprSrc)
-{
-#ifdef RT_ARCH_AMD64
-    /* movzx Gv,Eb */
-    /** @todo */
-    uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 4);
+iemNativeEmitLoadGprFromGpr8Hi(PIEMRECOMPILERSTATE pReNative, uint32_t off, uint8_t iGprDst, uint8_t iGprSrc)
+{
+#ifdef RT_ARCH_AMD64
+    uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 8);
+
+    /* movzx Gv,Ew */
     if ((iGprDst | iGprSrc) >= 8)
         pbCodeBuf[off++] = iGprDst < 8  ? X86_OP_REX_B
@@ -705 +707 @@
                          :                X86_OP_REX_R;
     pbCodeBuf[off++] = 0x0f;
-    pbCodeBuf[off++] = 0xb6;
+    pbCodeBuf[off++] = 0xb7;
     pbCodeBuf[off++] = X86_MODRM_MAKE(X86_MOD_REG, iGprDst & 7, iGprSrc & 7);
 
+    /* shr Ev,8 */
+    if (iGprDst >= 8)
+        pbCodeBuf[off++] = X86_OP_REX_B;
+    pbCodeBuf[off++] = 0xc1;
+    pbCodeBuf[off++] = X86_MODRM_MAKE(X86_MOD_REG, 5, iGprDst & 7);
+    pbCodeBuf[off++] = 8;
+
 #elif RT_ARCH_ARM64
-    /* ubfx gprdst, gprsrc, #8, #8 */
+    /* bfi gprdst, gprsrc, #8, #8 */
     uint32_t * const pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 1);
-    Assert(Armv8A64ConvertImmRImmS2Mask64(0x47, 0) == UINT8_MAX);
-    pu32CodeBuf[off++] = /** @todo ubfx */;
+    pu32CodeBuf[off++] = Armv8A64MkInstrBfi(iGprDst, iGprSrc, 8, 8, false /*f64Bit*/);
 
 #else
@@ -720 +728 @@
     return off;
 }
-#endif
+
 
 #ifdef RT_ARCH_AMD64