1 files changed, 6 insertions, 88 deletions

diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index 0673c4746be..4a2c866f977 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -25,6 +25,7 @@
 #include <linux/fs.h>
 #include <linux/ftrace.h>
 #include <linux/preempt.h>
+#include <linux/hw_breakpoint.h>
 #include <asm/uaccess.h>
 #include <asm/mmu_context.h>
 #include <asm/pgalloc.h>
@@ -34,8 +35,6 @@
 #include <asm/syscalls.h>
 #include <asm/watchdog.h>
 
-int ubc_usercnt = 0;
-
 #ifdef CONFIG_32BIT
 static void watchdog_trigger_immediate(void)
 {
@@ -148,16 +147,15 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
  */
 void exit_thread(void)
 {
-	if (current->thread.ubc_pc) {
-		current->thread.ubc_pc = 0;
-		ubc_usercnt -= 1;
-	}
 }
 
 void flush_thread(void)
 {
-#if defined(CONFIG_SH_FPU)
 	struct task_struct *tsk = current;
+
+	flush_ptrace_hw_breakpoint(tsk);
+
+#if defined(CONFIG_SH_FPU)
 	/* Forget lazy FPU state */
 	clear_fpu(tsk, task_pt_regs(tsk));
 	clear_used_math();
@@ -195,9 +193,7 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 {
 	struct thread_info *ti = task_thread_info(p);
 	struct pt_regs *childregs;
-#if defined(CONFIG_SH_FPU) || defined(CONFIG_SH_DSP)
 	struct task_struct *tsk = current;
-#endif
 
 #if defined(CONFIG_SH_FPU)
 	unlazy_fpu(tsk, regs);
@@ -234,53 +230,11 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 	p->thread.sp = (unsigned long) childregs;
 	p->thread.pc = (unsigned long) ret_from_fork;
 
-	p->thread.ubc_pc = 0;
+	memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps));
 
 	return 0;
 }
 
-/* Tracing by user break controller.  */
-static void ubc_set_tracing(int asid, unsigned long pc)
-{
-#if defined(CONFIG_CPU_SH4A)
-	unsigned long val;
-
-	val = (UBC_CBR_ID_INST | UBC_CBR_RW_READ | UBC_CBR_CE);
-	val |= (UBC_CBR_AIE | UBC_CBR_AIV_SET(asid));
-
-	ctrl_outl(val, UBC_CBR0);
-	ctrl_outl(pc,  UBC_CAR0);
-	ctrl_outl(0x0, UBC_CAMR0);
-	ctrl_outl(0x0, UBC_CBCR);
-
-	val = (UBC_CRR_RES | UBC_CRR_PCB | UBC_CRR_BIE);
-	ctrl_outl(val, UBC_CRR0);
-
-	/* Read UBC register that we wrote last, for checking update */
-	val = ctrl_inl(UBC_CRR0);
-
-#else	/* CONFIG_CPU_SH4A */
-	ctrl_outl(pc, UBC_BARA);
-
-#ifdef CONFIG_MMU
-	ctrl_outb(asid, UBC_BASRA);
-#endif
-
-	ctrl_outl(0, UBC_BAMRA);
-
-	if (current_cpu_data.type == CPU_SH7729 ||
-	    current_cpu_data.type == CPU_SH7710 ||
-	    current_cpu_data.type == CPU_SH7712 ||
-	    current_cpu_data.type == CPU_SH7203){
-		ctrl_outw(BBR_INST | BBR_READ | BBR_CPU, UBC_BBRA);
-		ctrl_outl(BRCR_PCBA | BRCR_PCTE, UBC_BRCR);
-	} else {
-		ctrl_outw(BBR_INST | BBR_READ, UBC_BBRA);
-		ctrl_outw(BRCR_PCBA, UBC_BRCR);
-	}
-#endif	/* CONFIG_CPU_SH4A */
-}
-
 /*
  *	switch_to(x,y) should switch tasks from x to y.
  *
@@ -302,25 +256,6 @@ __switch_to(struct task_struct *prev, struct task_struct *next)
 		     : "r" (task_thread_info(next)));
 #endif
 
-	/* If no tasks are using the UBC, we're done */
-	if (ubc_usercnt == 0)
-		/* If no tasks are using the UBC, we're done */;
-	else if (next->thread.ubc_pc && next->mm) {
-		int asid = 0;
-#ifdef CONFIG_MMU
-		asid |= cpu_asid(smp_processor_id(), next->mm);
-#endif
-		ubc_set_tracing(asid, next->thread.ubc_pc);
-	} else {
-#if defined(CONFIG_CPU_SH4A)
-		ctrl_outl(UBC_CBR_INIT, UBC_CBR0);
-		ctrl_outl(UBC_CRR_INIT, UBC_CRR0);
-#else
-		ctrl_outw(0, UBC_BBRA);
-		ctrl_outw(0, UBC_BBRB);
-#endif
-	}
-
 	return prev;
 }
 
@@ -412,20 +347,3 @@ unsigned long get_wchan(struct task_struct *p)
 
 	return pc;
 }
-
-asmlinkage void break_point_trap(void)
-{
-	/* Clear tracing.  */
-#if defined(CONFIG_CPU_SH4A)
-	ctrl_outl(UBC_CBR_INIT, UBC_CBR0);
-	ctrl_outl(UBC_CRR_INIT, UBC_CRR0);
-#else
-	ctrl_outw(0, UBC_BBRA);
-	ctrl_outw(0, UBC_BBRB);
-	ctrl_outl(0, UBC_BRCR);
-#endif
-	current->thread.ubc_pc = 0;
-	ubc_usercnt -= 1;
-
-	force_sig(SIGTRAP, current);
-}