From 7777746c40876834c1527689336e43c8381b1921 Mon Sep 17 00:00:00 2001 From: Richard Kuo Date: Thu, 7 Mar 2013 12:03:10 -0600 Subject: Hexagon: add support for single-stepping (v4+) Hardware single-step is only available on v4 and later architectures. Signed-off-by: Richard Kuo --- arch/hexagon/kernel/ptrace.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'arch/hexagon/kernel/ptrace.c') diff --git a/arch/hexagon/kernel/ptrace.c b/arch/hexagon/kernel/ptrace.c index 3982d9c9ec2b..70df50d797d8 100644 --- a/arch/hexagon/kernel/ptrace.c +++ b/arch/hexagon/kernel/ptrace.c @@ -32,6 +32,21 @@ #include +#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, -- cgit v1.2.3