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Diffstat (limited to 'arch/parisc/include/asm/special_insns.h')
-rw-r--r--arch/parisc/include/asm/special_insns.h40
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 0000000..d306b75
--- /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 */