[PATCH] xen: x86: Use new macro for debugreg

Make use of the 2 new macro set_debugreg and get_debugreg.

Signed-off-by: Vincent Hanquez <vincent.hanquez@cl.cam.ac.uk>
Cc: Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 10 insertions, 12 deletions

diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c
index d199e525680a..b9954248d0aa 100644
--- a/arch/i386/kernel/cpu/common.c
+++ b/arch/i386/kernel/cpu/common.c
@@ -635,7 +635,7 @@ void __init cpu_init (void)
 
         /* Clear all 6 debug registers: */
 
-#define CD(register) __asm__("movl %0,%%db" #register ::"r"(0) );
+#define CD(register) set_debugreg(0, register)
 
         CD(0); CD(1); CD(2); CD(3); /* no db4 and db5 */; CD(6); CD(7);
 
diff --git a/arch/i386/kernel/process.c b/arch/i386/kernel/process.c
index 3c3f245cca53..2468ab70c386 100644
--- a/arch/i386/kernel/process.c
+++ b/arch/i386/kernel/process.c
@@ -633,13 +633,13 @@ struct task_struct fastcall * __switch_to(struct task_struct *prev_p, struct tas
          * Now maybe reload the debug registers
          */
         if (unlikely(next->debugreg[7])) {
-                loaddebug(next, 0);
-                loaddebug(next, 1);
-                loaddebug(next, 2);
-                loaddebug(next, 3);
+                set_debugreg(current->thread.debugreg[0], 0);
+                set_debugreg(current->thread.debugreg[1], 1);
+                set_debugreg(current->thread.debugreg[2], 2);
+                set_debugreg(current->thread.debugreg[3], 3);
                 /* no 4 and 5 */
-                loaddebug(next, 6);
-                loaddebug(next, 7);
+                set_debugreg(current->thread.debugreg[6], 6);
+                set_debugreg(current->thread.debugreg[7], 7);
         }
 
         if (unlikely(prev->io_bitmap_ptr || next->io_bitmap_ptr))
diff --git a/arch/i386/kernel/signal.c b/arch/i386/kernel/signal.c
index 344400787c39..839d4dc88cd4 100644
--- a/arch/i386/kernel/signal.c
+++ b/arch/i386/kernel/signal.c
@@ -624,7 +624,7 @@ int fastcall do_signal(struct pt_regs *regs, sigset_t *oldset)
                  * inside the kernel.
                  */
                 if (unlikely(current->thread.debugreg[7])) {
-                        loaddebug(&current->thread, 7);
+                        set_debugreg(current->thread.debugreg[7], 7);
                 }
 
                 /* Whee!  Actually deliver the signal.  */
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index 7f729665d292..c01d7ba6d7e8 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -685,7 +685,7 @@ fastcall void do_debug(struct pt_regs * regs, long error_code)
         unsigned int condition;
         struct task_struct *tsk = current;
 
-        __asm__ __volatile__("movl %%db6,%0" : "=r" (condition));
+        get_debugreg(condition, 6);
 
         if (notify_die(DIE_DEBUG, "debug", regs, condition, error_code,
                                         SIGTRAP) == NOTIFY_STOP)
@@ -727,9 +727,7 @@ fastcall void do_debug(struct pt_regs * regs, long error_code)
          * the signal is delivered.
          */
 clear_dr7:
-        __asm__("movl %0,%%db7"
-                : /* no output */
-                : "r" (0));
+        set_debugreg(0, 7);
         return;
 
 debug_vm86: