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Commit 471c70ff authored by Torez Smith's avatar Torez Smith Committed by Josh Boyer
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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: default avatarTorez Smith <lnxtorez@linux.vnet.ibm.com>
Signed-off-by: default avatarDave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: default avatarJosh Boyer <jwboyer@linux.vnet.ibm.com>
parent cb694769

arch/powerpc/kernel/head_booke.h

+4 −0
Original line number Diff line number Diff line 
#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)