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| author | Richard Kuo <rkuo@codeaurora.org> | 2013-03-07 12:03:10 -0600 |
|---|---|---|
| committer | Richard Kuo <rkuo@codeaurora.org> | 2013-04-30 19:40:25 -0500 |
| commit | 7777746c40876834c1527689336e43c8381b1921 (patch) | |
| tree | b3257768e29db418ab9292a4e9a27c56e1e88fed /arch/hexagon/kernel/ptrace.c | |
| parent | f8722a4d5243e779d6795e2d775c9114c44a6c26 (diff) | |
| download | lwn-7777746c40876834c1527689336e43c8381b1921.tar.gz lwn-7777746c40876834c1527689336e43c8381b1921.zip | |
Hexagon: add support for single-stepping (v4+)
Hardware single-step is only available on v4 and later
architectures.
Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Diffstat (limited to 'arch/hexagon/kernel/ptrace.c')
| -rw-r--r-- | arch/hexagon/kernel/ptrace.c | 15 |
1 files changed, 15 insertions, 0 deletions
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 <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, |