[PATCH] i386: Use loaddebug macro consistently

This moves the macro loaddebug from asm-i386/suspend.h to
asm-i386/processor.h, which is the place that makes sense for it to be
defined, removes the extra copy of the same macro in
arch/i386/kernel/process.c, and makes arch/i386/kernel/signal.c use the
macro in place of its expansion.

This is a purely cosmetic cleanup for the normal i386 kernel. However, it
is handy for Xen to be able to just redefine the loaddebug macro once
instead of also changing the signal.c code.

Signed-off-by: Roland McGrath <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/i386/kernel/process.c

···
 	 */
 	tss->io_bitmap_base = INVALID_IO_BITMAP_OFFSET_LAZY;
 }
-/*
- * This special macro can be used to load a debugging register
- */
-#define loaddebug(thread,register) \
-		__asm__("movl %0,%%db" #register  \
-			: /* no output */ \
-			:"r" (thread->debugreg[register]))
 
 /*
  *	switch_to(x,yn) should switch tasks from x to y.

arch/i386/kernel/signal.c

···
 		 * inside the kernel.
 		 */
 		if (unlikely(current->thread.debugreg[7])) {
-			__asm__("movl %0,%%db7"	: : "r" (current->thread.debugreg[7]));
+			loaddebug(&current->thread, 7);
 		}
 
 		/* Whee!  Actually deliver the signal.  */

include/asm-i386/processor.h

···
 	regs->esp = new_esp;					\
 } while (0)
 
+/*
+ * This special macro can be used to load a debugging register
+ */
+#define loaddebug(thread,register) \
+               __asm__("movl %0,%%db" #register  \
+                       : /* no output */ \
+                       :"r" ((thread)->debugreg[register]))
+
 /* Forward declaration, a strange C thing */
 struct task_struct;
 struct mm_struct;

include/asm-i386/suspend.h

···
 	unsigned long return_address;
 } __attribute__((packed));
 
-#define loaddebug(thread,register) \
-               __asm__("movl %0,%%db" #register  \
-                       : /* no output */ \
-                       :"r" ((thread)->debugreg[register]))
-
 #ifdef CONFIG_ACPI_SLEEP
 extern unsigned long saved_eip;
 extern unsigned long saved_esp;