software: fix broken OR1K inline assembly.

The "K" constraint accepts a 16-bit immediate. It worked by accident inside an inline function in GCC and Clang 3.5, but not newer versions of Clang.
m-labs · Mar 29, 2016 · 9fd5840 · 9fd5840
1 parent a0d75a0
commit 9fd5840
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/misoc/software/include/base/system.h b/misoc/software/include/base/system.h
@@ -15,14 +15,14 @@ static inline unsigned long mfspr(unsigned long add)
 {
 	unsigned long ret;
 
-	__asm__ __volatile__ ("l.mfspr %0,r0,%1" : "=r" (ret) : "K" (add));
+	__asm__ __volatile__ ("l.mfspr %0,%1,0" : "=r" (ret) : "r" (add));
 
 	return ret;
 }
 
 static inline void mtspr(unsigned long add, unsigned long val)
 {
-	__asm__ __volatile__ ("l.mtspr r0,%1,%0" : : "K" (add), "r" (val));
+	__asm__ __volatile__ ("l.mtspr %0,%1,0" : : "r" (add), "r" (val));
 }
 #endif