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-rw-r--r--arch/alpha/include/asm/compiler.h130
1 files changed, 130 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/compiler.h b/arch/alpha/include/asm/compiler.h
new file mode 100644
index 00000000000..da6bb199839
--- /dev/null
+++ b/arch/alpha/include/asm/compiler.h
@@ -0,0 +1,130 @@
+#ifndef __ALPHA_COMPILER_H
+#define __ALPHA_COMPILER_H
+
+/*
+ * Herein are macros we use when describing various patterns we want to GCC.
+ * In all cases we can get better schedules out of the compiler if we hide
+ * as little as possible inside inline assembly. However, we want to be
+ * able to know what we'll get out before giving up inline assembly. Thus
+ * these tests and macros.
+ */
+
+#if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3
+# define __kernel_insbl(val, shift) __builtin_alpha_insbl(val, shift)
+# define __kernel_inswl(val, shift) __builtin_alpha_inswl(val, shift)
+# define __kernel_insql(val, shift) __builtin_alpha_insql(val, shift)
+# define __kernel_inslh(val, shift) __builtin_alpha_inslh(val, shift)
+# define __kernel_extbl(val, shift) __builtin_alpha_extbl(val, shift)
+# define __kernel_extwl(val, shift) __builtin_alpha_extwl(val, shift)
+# define __kernel_cmpbge(a, b) __builtin_alpha_cmpbge(a, b)
+#else
+# define __kernel_insbl(val, shift) \
+ ({ unsigned long __kir; \
+ __asm__("insbl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \
+ __kir; })
+# define __kernel_inswl(val, shift) \
+ ({ unsigned long __kir; \
+ __asm__("inswl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \
+ __kir; })
+# define __kernel_insql(val, shift) \
+ ({ unsigned long __kir; \
+ __asm__("insql %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \
+ __kir; })
+# define __kernel_inslh(val, shift) \
+ ({ unsigned long __kir; \
+ __asm__("inslh %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \
+ __kir; })
+# define __kernel_extbl(val, shift) \
+ ({ unsigned long __kir; \
+ __asm__("extbl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \
+ __kir; })
+# define __kernel_extwl(val, shift) \
+ ({ unsigned long __kir; \
+ __asm__("extwl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val)); \
+ __kir; })
+# define __kernel_cmpbge(a, b) \
+ ({ unsigned long __kir; \
+ __asm__("cmpbge %r2,%1,%0" : "=r"(__kir) : "rI"(b), "rJ"(a)); \
+ __kir; })
+#endif
+
+#ifdef __alpha_cix__
+# if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3
+# define __kernel_cttz(x) __builtin_ctzl(x)
+# define __kernel_ctlz(x) __builtin_clzl(x)
+# define __kernel_ctpop(x) __builtin_popcountl(x)
+# else
+# define __kernel_cttz(x) \
+ ({ unsigned long __kir; \
+ __asm__("cttz %1,%0" : "=r"(__kir) : "r"(x)); \
+ __kir; })
+# define __kernel_ctlz(x) \
+ ({ unsigned long __kir; \
+ __asm__("ctlz %1,%0" : "=r"(__kir) : "r"(x)); \
+ __kir; })
+# define __kernel_ctpop(x) \
+ ({ unsigned long __kir; \
+ __asm__("ctpop %1,%0" : "=r"(__kir) : "r"(x)); \
+ __kir; })
+# endif
+#else
+# define __kernel_cttz(x) \
+ ({ unsigned long __kir; \
+ __asm__(".arch ev67; cttz %1,%0" : "=r"(__kir) : "r"(x)); \
+ __kir; })
+# define __kernel_ctlz(x) \
+ ({ unsigned long __kir; \
+ __asm__(".arch ev67; ctlz %1,%0" : "=r"(__kir) : "r"(x)); \
+ __kir; })
+# define __kernel_ctpop(x) \
+ ({ unsigned long __kir; \
+ __asm__(".arch ev67; ctpop %1,%0" : "=r"(__kir) : "r"(x)); \
+ __kir; })
+#endif
+
+
+/*
+ * Beginning with EGCS 1.1, GCC defines __alpha_bwx__ when the BWX
+ * extension is enabled. Previous versions did not define anything
+ * we could test during compilation -- too bad, so sad.
+ */
+
+#if defined(__alpha_bwx__)
+#define __kernel_ldbu(mem) (mem)
+#define __kernel_ldwu(mem) (mem)
+#define __kernel_stb(val,mem) ((mem) = (val))
+#define __kernel_stw(val,mem) ((mem) = (val))
+#else
+#define __kernel_ldbu(mem) \
+ ({ unsigned char __kir; \
+ __asm__(".arch ev56; \
+ ldbu %0,%1" : "=r"(__kir) : "m"(mem)); \
+ __kir; })
+#define __kernel_ldwu(mem) \
+ ({ unsigned short __kir; \
+ __asm__(".arch ev56; \
+ ldwu %0,%1" : "=r"(__kir) : "m"(mem)); \
+ __kir; })
+#define __kernel_stb(val,mem) \
+ __asm__(".arch ev56; \
+ stb %1,%0" : "=m"(mem) : "r"(val))
+#define __kernel_stw(val,mem) \
+ __asm__(".arch ev56; \
+ stw %1,%0" : "=m"(mem) : "r"(val))
+#endif
+
+#ifdef __KERNEL__
+/* Some idiots over in <linux/compiler.h> thought inline should imply
+ always_inline. This breaks stuff. We'll include this file whenever
+ we run into such problems. */
+
+#include <linux/compiler.h>
+#undef inline
+#undef __inline__
+#undef __inline
+#undef __always_inline
+#define __always_inline inline __attribute__((always_inline))
+
+#endif /* __KERNEL__ */
+
+#endif /* __ALPHA_COMPILER_H */