powerpc/booke: Add Stack Marking support to Booke Exception Prolog
From: Torez Smith <lnxto...@linux.vnet.ibm.com>
Signed-off-by: Torez Smith <lnxto...@linux.vnet.ibm.com>
Signed-off-by: Dave Kleikamp <sha...@linux.vnet.ibm.com>
---
arch/powerpc/kernel/head_booke.h | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h
index 50504ae..80d47f4 100644
--- a/arch/powerpc/kernel/head_booke.h
+++ b/arch/powerpc/kernel/head_booke.h
@@ -1,6 +1,8 @@
#ifndef __HEAD_BOOKE_H__
#define __HEAD_BOOKE_H__
+#define STACK_FRAME_REGS_MARKER ASM_CONST(0x72656773)
+
/*
* Macros used for common Book-e exception handling
*/
@@ -48,6 +50,9 @@
stw r10,0(r11); \
rlwinm r9,r9,0,14,12; /* clear MSR_WE (necessary?) */\
stw r0,GPR0(r11); \
+ lis r10, stack_frame_regs_mar...@ha;/* exception frame marker */ \
+ addi r10, r10, stack_frame_regs_mar...@l; \
+ stw r10, 8(r11); \
SAVE_4GPRS(3, r11); \
SAVE_2GPRS(7, r11)
--
Dave Kleikamp
IBM Linux Technology Center
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