Changeset e0b241f in mainline for kernel/arch/sparc64/include/trap/mmu.h

Timestamp:

2006-08-31T11:55:19Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

ed166f7

Parents:

beb3926a

Message:

sparc64 work.

• Convert interrupt_vector trap handler and some mm related trap handlers to

use preemptibe_handler(), which is essential for traps coming from userspace.

• Add fast_data_access_protection() handler.

File:

• kernel/arch/sparc64/include/trap/mmu.h (modified) (3 diffs)

kernel/arch/sparc64/include/trap/mmu.h

@@ -35 +35 @@
  */
 
-#ifndef __sparc64_MMU_TRAP_H__
-#define __sparc64_MMU_TRAP_H__
+#ifndef KERN_sparc64_MMU_TRAP_H_
+#define KERN_sparc64_MMU_TRAP_H_
 
 #include <arch/stack.h>
@@ -52 +52 @@
 #ifdef __ASM__
 .macro FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER
-        save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp
-        call fast_instruction_access_mmu_miss
-        nop
-        restore
-        retry   
+        /*
+         * First, try to refill TLB from TSB.
+         */
+        ! TODO
+
+        wrpr %g0, PSTATE_PRIV_BIT | PSTATE_AG_BIT, %pstate
+        PREEMPTIBLE_HANDLER fast_instruction_access_mmu_miss
 .endm
 
@@ -102 +104 @@
 
 .macro FAST_DATA_ACCESS_PROTECTION_HANDLER
-        save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp
-        call fast_data_access_protection
-        nop
-        restore
-        retry
+        wrpr %g0, PSTATE_PRIV_BIT | PSTATE_AG_BIT, %pstate
+        PREEMPTIBLE_HANDLER fast_data_access_protection
 .endm
 #endif /* __ASM__ */