Changeset 21570 in vbox for trunk/src/VBox/VMM

Timestamp:

Jul 14, 2009 10:15:40 AM (16 years ago)

Author:

vboxsync

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

50052

Message:

Fixed broken SVMR0InvlpgA

File:

• trunk/src/VBox/VMM/VMMR0/HWACCMR0A.asm (modified) (2 diffs)

trunk/src/VBox/VMM/VMMR0/HWACCMR0A.asm

@@ -924 +924 @@
     mov     rcx, rsi
  %else
-    ; from http://www.cs.cmu.edu/~fp/courses/15213-s06/misc/asm64-handout.pdf:
-    ; ``Perhaps unexpectedly, instructions that move or generate 32-bit register
-    ;   values also set the upper 32 bits of the register to zero. Consequently
-    ;   there is no need for an instruction movzlq.''
-    mov     eax, ecx
+    mov     rax, rcx
     mov     rcx, rdx
  %endif
@@ -953 +949 @@
     mov     ecx, esi
  %else
-    ; from http://www.cs.cmu.edu/~fp/courses/15213-s06/misc/asm64-handout.pdf:
-    ; ``Perhaps unexpectedly, instructions that move or generate 32-bit register
-    ;   values also set the upper 32 bits of the register to zero. Consequently
-    ;   there is no need for an instruction movzlq.''
     mov     eax, ecx
     mov     ecx, edx