Changeset 7614565 in mainline for arch/sparc64/src

Timestamp:

2005-12-27T21:40:02Z (20 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.

Location:

arch/sparc64/src

Files:

• context.S (modified) (2 diffs)
• panic.S (modified) (2 diffs)
• trap/trap_table.S (modified) (2 diffs)

arch/sparc64/src/context.S

@@ -62 +62 @@
         stx %l6, [\r + OFFSET_L6]
         stx %l7, [\r + OFFSET_L7]
+        rdpr %cleanwin, %g1
+        stx %g1, [\r + OFFSET_CLEANWIN]
 .endm
 
@@ -83 +85 @@
         ldx [\r + OFFSET_L6], %l6
         ldx [\r + OFFSET_L7], %l7
+        ldx [\r + OFFSET_CLEANWIN], %g1
+        wrpr %g1, %g0, %cleanwin
 .endm
 

arch/sparc64/src/panic.S

@@ -29 +29 @@
 .text
 
+#include <arch/stack.h>
+
 .global panic_printf
 panic_printf:
+        save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp
         call printf
         nop
@@ -36 +39 @@
         nop
         /* Not reached. */
+        restore
+

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