Changeset b994a60 in mainline for arch/ia64/src/ivt.S

Timestamp:

2006-03-09T12:44:27Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

901122b

Parents:

cd373bb

Message:

ia64 work.
Changes to make userspace work (kernel part).
Use ski.conf from contrib directory to run Ski.

There is actually no appropriate syscall handler yet.

File:

• arch/ia64/src/ivt.S (modified) (3 diffs)

arch/ia64/src/ivt.S

@@ -137 +137 @@
         st8 [r31] = r26, -8             /* save ar.ifs */
         
-        and r30 = ~3, r24 ;;
-        mov ar.rsc = r30 ;;             /* place RSE in enforced lazy mode */
+        and r24 = ~(RSC_PL_MASK), r24 ;;
+        and r30 = ~(RSC_MODE_MASK), r24 ;;
+        mov ar.rsc = r30 ;;             /* update RSE state */
         
         mov r27 = ar.rnat
@@ -163 +164 @@
         st8 [r31] = r29, -8             /* save ar.bsp */
         
-        mov ar.rsc = r24                /* restore RSE's setting */
+        mov ar.rsc = r24                /* restore RSE's setting + kernel privileges */
         
     /* steps 6 - 15 are done by heavyweight_handler_inner() */
@@ -301 +302 @@
 
     /* 10. call handler */
+        movl r1 = _hardcoded_load_address
+    
         mov b1 = loc2
         br.call.sptk.many b0 = b1