x86: unify current_text_addr

current_text_addr() has a different implementation in x86_64 and
i386, but it is not fundamentally different. I stick to the i386
implementation, that seem to be a common base, and move it to processor.h

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index 52e3637ef59e..3deb5ba55f55 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -10,6 +10,17 @@ struct mm_struct;
 #include <asm/page.h>
 #include <asm/system.h>
 
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+static inline void *current_text_addr(void)
+{
+        void *pc;
+        asm volatile("mov $1f,%0\n1:":"=r" (pc));
+        return pc;
+}
+
 static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
                                          unsigned int *ecx, unsigned int *edx)
 {