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authorTorez Smith <lnxtorez@linux.vnet.ibm.com>2010-03-05 10:43:01 +0000
committerJosh Boyer <jwboyer@linux.vnet.ibm.com>2010-05-05 08:01:52 -0400
commit471c70ff39809af783c7718defe574a9ba81dd26 (patch)
tree4b224183cf592f448e9dc974465a4cfc81f4d311 /arch/powerpc/kernel/head_booke.h
parentcb694769f0d0c1f6fb8c9dc806c0a68da1056055 (diff)
downloadblackbird-op-linux-471c70ff39809af783c7718defe574a9ba81dd26.tar.gz
blackbird-op-linux-471c70ff39809af783c7718defe574a9ba81dd26.zip
powerpc/booke: Add Stack Marking support to Booke Exception Prolog
This patch adds a marker to the exception stack frame to aid in debugging. It's already inserted on other platforms and xmon recognizes it and identifies exception frames when showing stack traces. Signed-off-by: Torez Smith <lnxtorez@linux.vnet.ibm.com> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Diffstat (limited to 'arch/powerpc/kernel/head_booke.h')
-rw-r--r--arch/powerpc/kernel/head_booke.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/head_booke.h b/arch/powerpc/kernel/head_booke.h
index 50504ae39cb7..a0bf158c8b47 100644
--- a/arch/powerpc/kernel/head_booke.h
+++ b/arch/powerpc/kernel/head_booke.h
@@ -1,6 +1,7 @@
#ifndef __HEAD_BOOKE_H__
#define __HEAD_BOOKE_H__
+#include <asm/ptrace.h> /* for STACK_FRAME_REGS_MARKER */
/*
* Macros used for common Book-e exception handling
*/
@@ -48,6 +49,9 @@
stw r10,0(r11); \
rlwinm r9,r9,0,14,12; /* clear MSR_WE (necessary?) */\
stw r0,GPR0(r11); \
+ lis r10, STACK_FRAME_REGS_MARKER@ha;/* exception frame marker */ \
+ addi r10, r10, STACK_FRAME_REGS_MARKER@l; \
+ stw r10, 8(r11); \
SAVE_4GPRS(3, r11); \
SAVE_2GPRS(7, r11)
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