Blackfin: convert irq/process to asm-generic

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

arch/blackfin/include/asm/processor.h

@@ -7,9 +7,8 @@
  */
 #define current_text_addr() ({ __label__ _l; _l: &&_l;})
 
+#include <asm/ptrace.h>
 #include <asm/blackfin.h>
-#include <asm/segment.h>
-#include <linux/compiler.h>
 
 static inline unsigned long rdusp(void)
 {
@@ -59,36 +58,8 @@ struct thread_struct {
 	PS_S, 0, 0						\
 }
 
-/*
- * Do necessary setup to start up a newly executed thread.
- *
- * pass the data segment into user programs if it exists,
- * it can't hurt anything as far as I can tell
- */
-#ifndef CONFIG_SMP
-#define start_thread(_regs, _pc, _usp)					\
-do {									\
-	set_fs(USER_DS);						\
-	(_regs)->pc = (_pc);						\
-	if (current->mm)						\
-		(_regs)->p5 = current->mm->start_data;			\
-	task_thread_info(current)->l1_task_info.stack_start		\
-		= (void *)current->mm->context.stack_start;		\
-	task_thread_info(current)->l1_task_info.lowest_sp = (void *)(_usp); \
-	memcpy(L1_SCRATCH_TASK_INFO, &task_thread_info(current)->l1_task_info, \
-		sizeof(*L1_SCRATCH_TASK_INFO));				\
-	wrusp(_usp);							\
-} while(0)
-#else
-#define start_thread(_regs, _pc, _usp)					\
-do {									\
-	set_fs(USER_DS);						\
-	(_regs)->pc = (_pc);						\
-	if (current->mm)						\
-		(_regs)->p5 = current->mm->start_data;			\
-	wrusp(_usp);							\
-} while (0)
-#endif
+extern void start_thread(struct pt_regs *regs, unsigned long new_ip,
+					       unsigned long new_sp);
 
 /* Forward declaration, a strange C thing */
 struct task_struct;