Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 118 insertions, 0 deletions

diff --git a/arch/alpha/include/uapi/asm/compiler.h b/arch/alpha/include/uapi/asm/compiler.h
new file mode 100644
index 000000000..0e00c0e13
--- /dev/null
+++ b/arch/alpha/include/uapi/asm/compiler.h
@@ -0,0 +1,118 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI__ALPHA_COMPILER_H
+#define _UAPI__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
+
+
+#endif /* _UAPI__ALPHA_COMPILER_H */