Changeset 60049aa in mainline

Timestamp:

2005-05-27T16:57:56Z (20 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

87cb9e2

Parents:

fc9c4e1

Message:

IA-64 work.
Save/restore the rest of AR registers (i.e. RSE registers) in context_save()/context_restore().

File:

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

arch/ia64/src/context.S

@@ -37 +37 @@
         /* loc2 */
         mov loc3 = ar.rsc
-        mov loc4 = ar.bsp
+
+        .auto
+
+        /*
+         * Flush dirty registers to backing store.
+         * After this ar.bsp and ar.bspstore are equal.
+         */
+        flushrs
+        mov loc4 = ar.bsp       
+        
+        /*
+         * Put RSE to enforced lazy mode.
+         * So that ar.rnat can be read.
+         */
+        movl loc5 = ~3
+        and loc5 = loc3, loc5
+        mov ar.rsc = loc5
         mov loc5 = ar.rnat
+
+        .explicit
+
         mov loc6 = ar.lc
         mov loc7 = ar.ec
@@ -146 +165 @@
         ld8 loc10 = [in0], 8    ;;      /* load ar.ssd */
         
+        .auto   
+
+        /*
+         * Invalidate the ALAT
+         */
+        invala
+
         /*
          * Restore application registers
          */
+
+        mov ar.bspstore = loc4
+        mov ar.rnat = loc5
+        mov ar.pfs = loc0
+        mov ar.rsc = loc3
+
+        .explicit
+
         mov ar.unat = loc2      ;;
-        /* TODO: restore ar.rsc, ar.rnat, ar.bspstore */        
         mov ar.lc = loc6
         mov ar.ec = loc7
@@ -218 +251 @@
         mov pr = loc2, ~0
         
-        mov ar.pfs = loc0
         mov ar.unat = loc1