From a40a953d9a73703c660e3c9a6d7d856543e90a3f Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Fri, 21 Dec 2007 15:39:32 +1100
Subject: [PATCH] --- yaml --- r: 81177 b: refs/heads/master c:
 ee41eea947ebe2f1f627fafe0e429b5dcaaab944 h: refs/heads/master i:   81175:
 2a9878b8490e376adb5b1b942731995663af8d80 v: v3

---
 [refs]                        | 2 +-
 trunk/arch/powerpc/boot/reg.h | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 1830d3f1cf26..b2fe1d14d541 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d23f5099297c0f017ba4fb165dc9879bda11f9ce
+refs/heads/master: ee41eea947ebe2f1f627fafe0e429b5dcaaab944
diff --git a/trunk/arch/powerpc/boot/reg.h b/trunk/arch/powerpc/boot/reg.h
index d3cd9ee98afb..9c2c9978e0eb 100644
--- a/trunk/arch/powerpc/boot/reg.h
+++ b/trunk/arch/powerpc/boot/reg.h
@@ -16,6 +16,14 @@ static inline u32 mfpvr(void)
 	return pvr;
 }
 
+#define __stringify_1(x)	#x
+#define __stringify(x)		__stringify_1(x)
+
+#define mfspr(rn)	({unsigned long rval; \
+			asm volatile("mfspr %0," __stringify(rn) \
+				: "=r" (rval)); rval; })
+#define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : : "r" (v))
+
 register void *__stack_pointer asm("r1");
 #define get_sp()	(__stack_pointer)