new: USE_MSR_INTR support
diff --git a/include/asm-microblaze/asm.h b/include/asm-microblaze/asm.h
old mode 100644
new mode 100755
index fcda31f..c59854a
--- a/include/asm-microblaze/asm.h
+++ b/include/asm-microblaze/asm.h
@@ -39,5 +39,42 @@
#define MTS(val) \
__asm__ __volatile__ ("mts rmsr, %0"::"r" (val));
+/* get return address from interrupt */
#define R14(val) \
__asm__ __volatile__ ("addi %0, r14, 0":"=r" (val));
+
+/* use machine status registe USE_MSR_REG */
+#ifdef XILINX_USE_MSR_INSTR
+#define MSRSET(val) \
+ __asm__ __volatile__ ("msrset r0," #val );
+
+#define MSRCLR(val) \
+ __asm__ __volatile__ ("msrclr r0," #val );
+
+#else
+#define MSRSET(val) \
+{ \
+ register unsigned tmp; \
+ __asm__ __volatile__ (" \
+ mfs %0, rmsr; \
+ ori %0, %0, "#val"; \
+ mts rmsr, %0; \
+ nop;" \
+ : "=r" (tmp) \
+ : "d" (val) \
+ : "memory"); \
+}
+
+#define MSRCLR(val) \
+{ \
+ register unsigned tmp; \
+ __asm__ __volatile__ (" \
+ mfs %0, rmsr; \
+ andi %0, %0, ~"#val"; \
+ mts rmsr, %0; \
+ nop;" \
+ : "=r" (tmp) \
+ : "d" (val) \
+ : "memory"); \
+}
+#endif