Changeset 7614565 in mainline for arch/sparc64/src/trap/trap_table.S

Timestamp:

2005-12-27T21:40:02Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

feb5915

Parents:

1120276

Message:

sparc64 work.
Fix clean_window trap handler so that it clears output registers instead of input registers!
Fix interrupt handlers to save global registers.

File:

• arch/sparc64/src/trap/trap_table.S (modified) (2 diffs)

arch/sparc64/src/trap/trap_table.S

@@ -38 +38 @@
  * link-time addresses which is good for debugging.
  */
- 
+
+.register %g2, #scratch
+.register %g3, #scratch
+.register %g6, #scratch
+.register %g7, #scratch 
+
 .text
 
@@ -203 +208 @@
 trap_table_save:
         .space TABLE_SIZE, 0
+
+
+/* Trap handler that explicitly saves global registers.
+ *
+ * Input registers:
+ *      %l0             Address of function to call.
+ * Output registers:
+ *       %l1 - %l7      Copy of %g1 - %g7
+ */
+.global saving_handler
+saving_handler:
+        SAVE_GLOBALS
+        call %l0
+        nop
+        RESTORE_GLOBALS
+        restore         /* matches the save instruction from the top-level handler */
+        retry