sh: hw-breakpoints: Add preliminary support for SH-4A UBC.

[pandora-kernel.git] / arch / sh / kernel / ptrace_32.c

diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 9be35f3..bdb1044 100644 (file)
--- 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;
-       }
 }
 
 /*