diff options
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r-- | arch/powerpc/kernel/entry_32.S | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 8587059ad848..dff51ea52e49 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -586,7 +586,11 @@ ppc_swapcontext: handle_page_fault: stw r4,_DAR(r1) addi r3,r1,STACK_FRAME_OVERHEAD + andis. r0,r5,DSISR_DABRMATCH@h +#ifdef CONFIG_6xx + bne- handle_dabr_fault bl do_page_fault +#endif cmpwi r3,0 beq+ ret_from_except SAVE_NVGPRS(r1) @@ -599,6 +603,17 @@ handle_page_fault: bl bad_page_fault b ret_from_except_full +#ifdef CONFIG_6xx + /* We have a data breakpoint exception - handle it */ +handle_dabr_fault: + SAVE_NVGPRS(r1) + lwz r0,_TRAP(r1) + clrrwi r0,r0,1 + stw r0,_TRAP(r1) + bl do_break + b ret_from_except_full +#endif + /* * This routine switches between two different tasks. The process * state of one is saved on its kernel stack. Then the state |