Changeset 238 for soft/giet_vm/sys/switch.s

Timestamp:

May 29, 2013, 1:24:09 AM (11 years ago)

Author:

alain

Message:

Major evolution to support physical addresses larger than 32 bits.
The map.xml format has been modified: the vsegs associated to schedulers
are now explicitely defined and mapped in the page tables.

File:

• soft/giet_vm/sys/switch.s (modified) (3 diffs)

soft/giet_vm/sys/switch.s

@@ -1 +1 @@
 /******************************************************************************
 * This function receives two arguments that are the current task context 
-* physical addresses and the next task context physical address.
-* The DTLB is temporary desactivated...
+* (virtual) addresses and the next task context (virtual) address.
 ******************************************************************************/
 
@@ -10 +9 @@
 
 _task_switch:
-
-    /* desactivate DTLB */
-    ori         $27,    $0,             0xB
-    mtc2        $27,    $1                      /* DTLB desactivated */
 
     /* save _current task context */
@@ -113 +108 @@
     mtc2    $26,    $0          /* restore PTPR */
 
-    /* activate DTLB */
-    ori         $27,    $0,             0xF
-    mtc2        $27,    $1      
-
     /* returns to caller */
     jr      $31