Changeset 301 for soft/giet_vm/giet_kernel/switch.s

Timestamp:

Apr 14, 2014, 6:44:51 PM (11 years ago)

Author:

cfuguet

Message:

Bugfix for interrupt masking and demasking.

File:

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

soft/giet_vm/giet_kernel/switch.s

@@ -2 +2 @@
 * This function receives two arguments that are the current task context 
 * (virtual) addresses and the next task context (virtual) address.
+*
+* This function should be called in a critical section
 *
 * TODO (AG) Il semble possible de limiter le nombre de registres à sauver:
@@ -18 +20 @@
 
 _task_switch:
-
-    /* enter critical section */
-    li      $2,     0xFFFFFFFE  
-    mfc0    $3,     $12        
-    and     $3,     $3, $2    
-    mtc0    $3,     $12    
 
     /* save _current task context */
@@ -123 +119 @@
     mtc2    $26,    $0          /* restore PTPR */
 
-    /* exit critical section */
-    li      $2,     0x00000001  
-    mfc0    $3,     $12        
-    or      $3,     $3, $2    
-    mtc0    $3,     $12    
-
     /* returns to caller */
     jr      $31