1 files changed, 40 insertions, 0 deletions

diff --git a/arch/parisc/include/asm/special_insns.h b/arch/parisc/include/asm/special_insns.h
new file mode 100644
index 000000000000..d306b75bc77f
--- /dev/null
+++ b/arch/parisc/include/asm/special_insns.h
@@ -0,0 +1,40 @@
+#ifndef __PARISC_SPECIAL_INSNS_H
+#define __PARISC_SPECIAL_INSNS_H
+
+#define mfctl(reg)      ({              \
+        unsigned long cr;               \
+        __asm__ __volatile__(           \
+                "mfctl " #reg ",%0" :   \
+                 "=r" (cr)              \
+        );                              \
+        cr;                             \
+})
+
+#define mtctl(gr, cr) \
+        __asm__ __volatile__("mtctl %0,%1" \
+                : /* no outputs */ \
+                : "r" (gr), "i" (cr) : "memory")
+
+/* these are here to de-mystefy the calling code, and to provide hooks */
+/* which I needed for debugging EIEM problems -PB */
+#define get_eiem() mfctl(15)
+static inline void set_eiem(unsigned long val)
+{
+        mtctl(val, 15);
+}
+
+#define mfsp(reg)       ({              \
+        unsigned long cr;               \
+        __asm__ __volatile__(           \
+                "mfsp " #reg ",%0" :    \
+                 "=r" (cr)              \
+        );                              \
+        cr;                             \
+})
+
+#define mtsp(gr, cr) \
+        __asm__ __volatile__("mtsp %0,%1" \
+                : /* no outputs */ \
+                : "r" (gr), "i" (cr) : "memory")
+
+#endif /* __PARISC_SPECIAL_INSNS_H */