From 3a2e117e220f000f95187ea1e1bbe83b0ed5fdfb Mon Sep 17 00:00:00 2001
From: Paul Mundt <lethal@linux-sh.org>
Date: Tue, 1 May 2007 16:33:10 +0900
Subject: sh: Add die chain notifiers.

Add the atomic die chains in, kprobes needs these.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---
 arch/sh/kernel/process.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

(limited to 'arch/sh/kernel/process.c')

diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index 286c80388bf..329b3f3051d 100644
--- a/arch/sh/kernel/process.c
+++ b/arch/sh/kernel/process.c
@@ -7,7 +7,7 @@
  *
  *  SuperH version:  Copyright (C) 1999, 2000  Niibe Yutaka & Kaz Kojima
  *		     Copyright (C) 2006 Lineo Solutions Inc. support SH4A UBC
- *		     Copyright (C) 2002 - 2006  Paul Mundt
+ *		     Copyright (C) 2002 - 2007  Paul Mundt
  */
 #include <linux/module.h>
 #include <linux/mm.h>
@@ -15,6 +15,7 @@
 #include <linux/pm.h>
 #include <linux/kallsyms.h>
 #include <linux/kexec.h>
+#include <asm/kdebug.h>
 #include <asm/uaccess.h>
 #include <asm/mmu_context.h>
 #include <asm/ubc.h>
@@ -299,8 +300,8 @@ static void ubc_set_tracing(int asid, unsigned long pc)
 	ctrl_outl(0, UBC_BAMRA);
 
 	if (current_cpu_data.type == CPU_SH7729 ||
-	    current_cpu_data.type == CPU_SH7710 || 
-	    current_cpu_data.type == CPU_SH7712 ) {
+	    current_cpu_data.type == CPU_SH7710 ||
+	    current_cpu_data.type == CPU_SH7712) {
 		ctrl_outw(BBR_INST | BBR_READ | BBR_CPU, UBC_BBRA);
 		ctrl_outl(BRCR_PCBA | BRCR_PCTE, UBC_BRCR);
 	} else {
@@ -496,6 +497,10 @@ asmlinkage void debug_trap_handler(unsigned long r4, unsigned long r5,
 	/* Rewind */
 	regs->pc -= 2;
 
+	if (notify_die(DIE_TRAP, regs, regs->tra & 0xff,
+		       SIGTRAP) == NOTIFY_STOP)
+		return;
+
 	force_sig(SIGTRAP, current);
 }
 
@@ -511,6 +516,10 @@ asmlinkage void bug_trap_handler(unsigned long r4, unsigned long r5,
 	/* Rewind */
 	regs->pc -= 2;
 
+	if (notify_die(DIE_TRAP, regs, TRAPA_BUG_OPCODE & 0xff,
+		       SIGTRAP) == NOTIFY_STOP)
+		return;
+
 #ifdef CONFIG_BUG
 	if (__kernel_text_address(instruction_pointer(regs))) {
 		u16 insn = *(u16 *)instruction_pointer(regs);
-- 
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