added generic VMM framework

[palacios.git] / palacios / src / geekos / lowlevel.asm

diff --git a/palacios/src/geekos/lowlevel.asm b/palacios/src/geekos/lowlevel.asm
index 63f93c2..f90212c 100644 (file)
--- a/palacios/src/geekos/lowlevel.asm
+++ b/palacios/src/geekos/lowlevel.asm
@@ -2,7 +2,7 @@
 ; Low level interrupt/thread handling code for GeekOS.
 ; Copyright (c) 2001,2003,2004 David H. Hovemeyer <daveho@cs.umd.edu>
 ; Copyright (c) 2003, Jeffrey K. Hollingsworth <hollings@cs.umd.edu>
-; $Revision: 1.1 $
+; $Revision: 1.2 $
 
 ; This is free software.  You are permitted to use,
 ; redistribute, and modify it as specified in the file "COPYING".
@@ -165,6 +165,7 @@ EXPORT Flush_TLB
 ; CPUID functions
 EXPORT cpuid_ecx
 EXPORT cpuid_eax
+EXPORT cpuid_edx
 
 ; Utility Functions
 EXPORT Set_MSR
@@ -269,6 +270,23 @@ Flush_TLB:
        ret
 
 
+
+;
+; cpuid_edx - return the edx register from cpuid
+;
+align 8
+cpuid_edx:
+       push    ebp
+       mov     ebp, esp
+       push    edx
+       mov     eax, [ebp + 8]
+       cpuid
+       mov     eax, edx
+       pop     edx
+       pop     ebp
+       ret
+
+
 ;
 ; cpuid_ecx - return the ecx register from cpuid
 ;