summaryrefslogtreecommitdiffstats
path: root/arch/sh/kernel/dumpstack.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sh/kernel/dumpstack.c')
-rw-r--r--arch/sh/kernel/dumpstack.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/sh/kernel/dumpstack.c b/arch/sh/kernel/dumpstack.c
index 694158b..7617dc4 100644
--- a/arch/sh/kernel/dumpstack.c
+++ b/arch/sh/kernel/dumpstack.c
@@ -2,13 +2,48 @@
* Copyright (C) 1991, 1992 Linus Torvalds
* Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
* Copyright (C) 2009 Matt Fleming
+ * Copyright (C) 2002 - 2012 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
*/
#include <linux/kallsyms.h>
#include <linux/ftrace.h>
#include <linux/debug_locks.h>
+#include <linux/kdebug.h>
+#include <linux/export.h>
+#include <linux/uaccess.h>
#include <asm/unwinder.h>
#include <asm/stacktrace.h>
+void dump_mem(const char *str, unsigned long bottom, unsigned long top)
+{
+ unsigned long p;
+ int i;
+
+ printk("%s(0x%08lx to 0x%08lx)\n", str, bottom, top);
+
+ for (p = bottom & ~31; p < top; ) {
+ printk("%04lx: ", p & 0xffff);
+
+ for (i = 0; i < 8; i++, p += 4) {
+ unsigned int val;
+
+ if (p < bottom || p >= top)
+ printk(" ");
+ else {
+ if (__get_user(val, (unsigned int __user *)p)) {
+ printk("\n");
+ return;
+ }
+ printk("%08x ", val);
+ }
+ }
+ printk("\n");
+ }
+}
+
void printk_address(unsigned long address, int reliable)
{
printk(" [<%p>] %s%pS\n", (void *) address,
@@ -106,3 +141,26 @@ void show_trace(struct task_struct *tsk, unsigned long *sp,
debug_show_held_locks(tsk);
}
+
+void show_stack(struct task_struct *tsk, unsigned long *sp)
+{
+ unsigned long stack;
+
+ if (!tsk)
+ tsk = current;
+ if (tsk == current)
+ sp = (unsigned long *)current_stack_pointer;
+ else
+ sp = (unsigned long *)tsk->thread.sp;
+
+ stack = (unsigned long)sp;
+ dump_mem("Stack: ", stack, THREAD_SIZE +
+ (unsigned long)task_stack_page(tsk));
+ show_trace(tsk, sp, NULL);
+}
+
+void dump_stack(void)
+{
+ show_stack(NULL, NULL);
+}
+EXPORT_SYMBOL(dump_stack);