Changeset 65030 in vbox for trunk

Timestamp:

Dec 29, 2016 2:28:00 PM (8 years ago)

Author:

vboxsync

Message:

IEM: Fixed BSR instruction.

File:

• trunk/src/VBox/VMM/VMMAll/IEMAllAImplC.cpp (modified) (4 diffs)

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

@@ -683 +683 @@
 {
     /* Note! "undefined" flags: OF, SF, AF, PF, CF. */
-    /** @todo check what real CPUs does. */
+    /** @todo check what real CPUs do. */
     if (uSrc)
     {
@@ -734 +734 @@
 {
     /* Note! "undefined" flags: OF, SF, AF, PF, CF. */
-    /** @todo check what real CPUs does. */
+    /** @todo check what real CPUs do. */
     if (uSrc)
     {
@@ -741 +741 @@
         if (uSrc & UINT64_C(0xffffffff00000000))
         {
-            iBit = 64;
+            iBit = 63;
             u32Src = uSrc >> 32;
         }
         else
         {
-            iBit = 32;
+            iBit = 31;
             u32Src = uSrc;
         }
@@ -769 +769 @@
             u32Src <<= 2;
         }
-        if (!(u32Src & UINT32_C(0x10000000)))
+        if (!(u32Src & UINT32_C(0x80000000)))
         {
             iBit -= 1;
-            u32Src <<= 1;
-            Assert(u32Src & RT_BIT_64(63));
+            Assert(u32Src & RT_BIT(30));
         }