Changeset 848 in vbox for trunk/src/VBox/VMM/VMMSwitcher

Timestamp:

Feb 12, 2007 4:01:52 PM (18 years ago)

Author:

vboxsync

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

18548

Message:

AMD64 debugging: Added checks for NMIs and that IF is cleared when doing the context switching.

File:

• trunk/src/VBox/VMM/VMMSwitcher/AMD64ToPAE.asm (modified) (3 diffs)

trunk/src/VBox/VMM/VMMSwitcher/AMD64ToPAE.asm

@@ -21 +21 @@
 
 ;%define DEBUG_STUFF 1
+%define STRICT_IF 1
 
 ;*******************************************************************************
@@ -66 +67 @@
     COM64_S_NEWLINE
     COM64_S_CHAR '^'
+%endif
+
+%ifdef STRICT_IF
+    pushf
+    pop     rax
+    test    eax, X86_EFL_IF
+    jz      .if_clear_in
+    mov     eax, 0c0ffee00h
+    ret
+.if_clear_in:
 %endif
 
@@ -707 +718 @@
     ; special registers which may change.
 vmmGCGuestToHostAsm_SkipHyperRegs:
+%ifdef STRICT_IF
+    pushf
+    pop     ecx
+    test    ecx, X86_EFL_IF
+    jz      .if_clear_out
+    mov     eax, 0c0ffee01h
+    cli
+.if_clear_out:
+%endif
     ; str     [edx + CPUM.Hyper.tr] - double fault only, and it won't be right then either.
     sldt    [edx + CPUM.Hyper.ldtr]