diff options
Diffstat (limited to 'arch/sh/kernel/ptrace_32.c')
| -rw-r--r-- | arch/sh/kernel/ptrace_32.c | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c index 9be35f348093..bdb10446cbac 100644 --- a/arch/sh/kernel/ptrace_32.c +++ b/arch/sh/kernel/ptrace_32.c @@ -65,31 +65,12 @@ static inline int put_stack_long(struct task_struct *task, int offset, void user_enable_single_step(struct task_struct *child) { - /* Next scheduling will set up UBC */ - if (child->thread.ubc_pc == 0) - ubc_usercnt += 1; - - child->thread.ubc_pc = get_stack_long(child, - offsetof(struct pt_regs, pc)); - set_tsk_thread_flag(child, TIF_SINGLESTEP); } void user_disable_single_step(struct task_struct *child) { clear_tsk_thread_flag(child, TIF_SINGLESTEP); - - /* - * Ensure the UBC is not programmed at the next context switch. - * - * Normally this is not needed but there are sequences such as - * singlestep, signal delivery, and continue that leave the - * ubc_pc non-zero leading to spurious SIGTRAPs. - */ - if (child->thread.ubc_pc != 0) { - ubc_usercnt -= 1; - child->thread.ubc_pc = 0; - } } /* |