patch-2.1.44 linux/include/asm-mips/unaligned.h

• Lines: 102
• Date: Thu Jun 26 12:33:40 1997
• Orig file: v2.1.43/linux/include/asm-mips/unaligned.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.43/linux/include/asm-mips/unaligned.h linux/include/asm-mips/unaligned.h
@@ -0,0 +1,101 @@
+/*
+ * Inline functions to do unaligned accesses.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996 by Ralf Baechle
+ */
+#ifndef __ASM_MIPS_UNALIGNED_H
+#define __ASM_MIPS_UNALIGNED_H
+
+#include <asm/string.h>
+
+/*
+ * Load quad unaligned.
+ */
+extern __inline__ unsigned long ldq_u(unsigned long long * __addr)
+{
+	unsigned long long __res;
+
+	__asm__("uld\t%0,(%1)"
+		:"=&r" (__res)
+		:"r" (__addr));
+
+	return __res;
+}
+
+/*
+ * Load long unaligned.
+ */
+extern __inline__ unsigned long ldl_u(unsigned int * __addr)
+{
+	unsigned long __res;
+
+	__asm__("ulw\t%0,(%1)"
+		:"=&r" (__res)
+		:"r" (__addr));
+
+	return __res;
+}
+
+/*
+ * Load word unaligned.
+ */
+extern __inline__ unsigned long ldw_u(unsigned short * __addr)
+{
+	unsigned long __res;
+
+	__asm__("ulh\t%0,(%1)"
+		:"=&r" (__res)
+		:"r" (__addr));
+
+	return __res;
+}
+
+/*
+ * Store quad ununaligned.
+ */
+extern __inline__ void stq_u(unsigned long __val, unsigned long long * __addr)
+{
+	__asm__ __volatile__(
+		"usd\t%0,(%1)"
+		: /* No results */
+		:"r" (__val),
+		 "r" (__addr));
+}
+
+/*
+ * Store long ununaligned.
+ */
+extern __inline__ void stl_u(unsigned long __val, unsigned int * __addr)
+{
+	__asm__ __volatile__(
+		"usw\t%0,(%1)"
+		: /* No results */
+		:"r" (__val),
+		 "r" (__addr));
+}
+
+/*
+ * Store word ununaligned.
+ */
+extern __inline__ void stw_u(unsigned long __val, unsigned short * __addr)
+{
+	__asm__ __volatile__(
+		"ush\t%0,(%1)"
+		: /* No results */
+		:"r" (__val),
+		 "r" (__addr));
+}
+
+#define get_unaligned(ptr) \
+  ({ __typeof__(*(ptr)) __tmp; memcpy(&__tmp, (ptr), sizeof(*(ptr))); __tmp; })
+
+#define put_unaligned(val, ptr)				\
+  ({ __typeof__(*(ptr)) __tmp = (val);			\
+     memcpy((ptr), &__tmp, sizeof(*(ptr)));		\
+     (void)0; })
+
+#endif /* __ASM_MIPS_UNALIGNED_H */