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-rw-r--r--arch/hexagon/kernel/ptrace.c26
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/hexagon/kernel/ptrace.c b/arch/hexagon/kernel/ptrace.c
index 670b1b0bee63..de829eb7f185 100644
--- a/arch/hexagon/kernel/ptrace.c
+++ b/arch/hexagon/kernel/ptrace.c
@@ -1,7 +1,7 @@
/*
* Ptrace support for Hexagon
*
- * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -32,6 +32,21 @@
#include <asm/user.h>
+#if arch_has_single_step()
+/* Both called from ptrace_resume */
+void user_enable_single_step(struct task_struct *child)
+{
+ pt_set_singlestep(task_pt_regs(child));
+ set_tsk_thread_flag(child, TIF_SINGLESTEP);
+}
+
+void user_disable_single_step(struct task_struct *child)
+{
+ pt_clr_singlestep(task_pt_regs(child));
+ clear_tsk_thread_flag(child, TIF_SINGLESTEP);
+}
+#endif
+
static int genregs_get(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
@@ -76,6 +91,10 @@ static int genregs_get(struct task_struct *target,
dummy = pt_cause(regs);
ONEXT(&dummy, cause);
ONEXT(&pt_badva(regs), badva);
+#if CONFIG_HEXAGON_ARCH_VERSION >=4
+ ONEXT(&regs->cs0, cs0);
+ ONEXT(&regs->cs1, cs1);
+#endif
/* Pad the rest with zeros, if needed */
if (!ret)
@@ -123,6 +142,11 @@ static int genregs_set(struct task_struct *target,
INEXT(&bucket, cause);
INEXT(&bucket, badva);
+#if CONFIG_HEXAGON_ARCH_VERSION >=4
+ INEXT(&regs->cs0, cs0);
+ INEXT(&regs->cs1, cs1);
+#endif
+
/* Ignore the rest, if needed */
if (!ret)
ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
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