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| author | Torez Smith <lnxtorez@linux.vnet.ibm.com> | 2010-03-05 10:43:01 +0000 |
|---|---|---|
| committer | Josh Boyer <jwboyer@linux.vnet.ibm.com> | 2010-05-05 08:01:52 -0400 |
| commit | 471c70ff39809af783c7718defe574a9ba81dd26 (patch) | |
| tree | 4b224183cf592f448e9dc974465a4cfc81f4d311 | |
| parent | cb694769f0d0c1f6fb8c9dc806c0a68da1056055 (diff) | |
| download | linux-stable-471c70ff39809af783c7718defe574a9ba81dd26.tar.gz linux-stable-471c70ff39809af783c7718defe574a9ba81dd26.tar.bz2 linux-stable-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>
| -rw-r--r-- | arch/powerpc/kernel/head_booke.h | 4 |
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) |