Changeset 0867321 in mainline for kernel/arch/ppc32/src/exception.S

Timestamp:

2009-02-02T18:06:15Z (15 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

cdda403

Parents:

7b187ef

Message:

very experimental TLB refill for ppc32

File:

• kernel/arch/ppc32/src/exception.S (modified) (3 diffs)

kernel/arch/ppc32/src/exception.S

@@ -209 +209 @@
 .global exc_syscall
 exc_syscall:
-        CONTEXT_STORE   
+        CONTEXT_STORE
         
         b jump_to_kernel_syscall
@@ -220 +220 @@
         li r3, 12
         b jump_to_kernel
+
+.org 0x1000
+.global exc_itlb_miss
+exc_itlb_miss:
+        CONTEXT_STORE
+        
+        b tlb_miss
+
+.org 0x1100
+.global exc_dtlb_miss_load
+exc_dtlb_miss_load:
+        CONTEXT_STORE
+        
+        b tlb_miss
+
+.org 0x1200
+.global exc_dtlb_miss_store
+exc_dtlb_miss_store:
+        CONTEXT_STORE
+        
+        b tlb_miss
 
 .org 0x4000
@@ -245 +266 @@
         li r3, 3
         b jump_to_kernel
+
+tlb_miss:
+        li r3, 16
+        mfspr r4, tlbmiss
+        mfspr r5, ptehi
+        mfspr r6, ptelo
+        mr r7, sp
+        addi r7, r7, 20
+        
+        bl tlb_refill_real
+        b iret_real
 
 jump_to_kernel: