added testing

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

diff --git a/misc/test_vm/src/geekos/lowlevel.asm b/misc/test_vm/src/geekos/lowlevel.asm
index 63f93c2..cae49a8 100644 (file)
--- a/misc/test_vm/src/geekos/lowlevel.asm
+++ b/misc/test_vm/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".
@@ -143,6 +143,9 @@ EXPORT Load_LDTR
 EXPORT g_entryPointTableStart
 EXPORT g_entryPointTableEnd
 
+
+EXPORT InByteLL
+
 ; Thread context switch function.
 EXPORT Switch_To_Thread
 
@@ -161,6 +164,7 @@ EXPORT Enable_Paging
 EXPORT Set_PDBR
 EXPORT Get_PDBR
 EXPORT Flush_TLB
+EXPORT Invalidate_PG
 
 ; CPUID functions
 EXPORT cpuid_ecx
@@ -270,6 +274,15 @@ Flush_TLB:
 
 
 ;
+; Invalidate Page - removes a page from the TLB
+;
+align 8
+Invalidate_PG:
+       mov     eax, [esp+4]
+       invlpg  [eax]
+       ret
+
+;
 ; cpuid_ecx - return the ecx register from cpuid
 ;
 align 8
@@ -352,6 +365,28 @@ Proc_test:
        ret
 
 
+
+align 8
+InByteLL:
+       push    ebp
+       mov     ebp, esp
+       push    ecx
+       push    ebx
+       push    edx
+
+       rdtsc
+       mov     ebx, eax
+       mov     ecx, edx
+       mov     dx, [ebp + 8]
+
+       in      al, dx
+
+       pop     edx
+       pop     ebx
+       pop     ecx
+       pop     ebp
+       ret
+
 ; Common interrupt handling code.
 ; Save registers, call C handler function,
 ; possibly choose a new thread to run, restore
@@ -518,6 +553,7 @@ Get_EBP:
 
 
 
+
 ; ----------------------------------------------------------------------
 ; Generate interrupt-specific entry points for all interrupts.
 ; We also define symbols to indicate the extend of the table