Merge commit 'v2.6.27-rc7' into x86/debug

1 files changed, 248 insertions, 0 deletions

diff --git a/arch/sh/include/asm/uaccess_32.h b/arch/sh/include/asm/uaccess_32.h
new file mode 100644
index 000000000000..ae0d24f6653f
--- /dev/null
+++ b/arch/sh/include/asm/uaccess_32.h
@@ -0,0 +1,248 @@
+/*
+ * User space memory access functions
+ *
+ * Copyright (C) 1999, 2002  Niibe Yutaka
+ * Copyright (C) 2003 - 2008  Paul Mundt
+ *
+ *  Based on:
+ *     MIPS implementation version 1.15 by
+ *              Copyright (C) 1996, 1997, 1998 by Ralf Baechle
+ *     and i386 version.
+ */
+#ifndef __ASM_SH_UACCESS_32_H
+#define __ASM_SH_UACCESS_32_H
+
+#define __get_user_size(x,ptr,size,retval)			\
+do {								\
+	retval = 0;						\
+	switch (size) {						\
+	case 1:							\
+		__get_user_asm(x, ptr, retval, "b");		\
+		break;						\
+	case 2:							\
+		__get_user_asm(x, ptr, retval, "w");		\
+		break;						\
+	case 4:							\
+		__get_user_asm(x, ptr, retval, "l");		\
+		break;						\
+	default:						\
+		__get_user_unknown();				\
+		break;						\
+	}							\
+} while (0)
+
+#ifdef CONFIG_MMU
+#define __get_user_asm(x, addr, err, insn) \
+({ \
+__asm__ __volatile__( \
+	"1:\n\t" \
+	"mov." insn "	%2, %1\n\t" \
+	"2:\n" \
+	".section	.fixup,\"ax\"\n" \
+	"3:\n\t" \
+	"mov	#0, %1\n\t" \
+	"mov.l	4f, %0\n\t" \
+	"jmp	@%0\n\t" \
+	" mov	%3, %0\n\t" \
+	".balign	4\n" \
+	"4:	.long	2b\n\t" \
+	".previous\n" \
+	".section	__ex_table,\"a\"\n\t" \
+	".long	1b, 3b\n\t" \
+	".previous" \
+	:"=&r" (err), "=&r" (x) \
+	:"m" (__m(addr)), "i" (-EFAULT), "0" (err)); })
+#else
+#define __get_user_asm(x, addr, err, insn)		\
+do {							\
+	__asm__ __volatile__ (				\
+		"mov." insn "	%1, %0\n\t"		\
+		: "=&r" (x)				\
+		: "m" (__m(addr))			\
+	);						\
+} while (0)
+#endif /* CONFIG_MMU */
+
+extern void __get_user_unknown(void);
+
+#define __put_user_size(x,ptr,size,retval)		\
+do {							\
+	retval = 0;					\
+	switch (size) {					\
+	case 1:						\
+		__put_user_asm(x, ptr, retval, "b");	\
+		break;					\
+	case 2:						\
+		__put_user_asm(x, ptr, retval, "w");	\
+		break;					\
+	case 4:						\
+		__put_user_asm(x, ptr, retval, "l");	\
+		break;					\
+	case 8:						\
+		__put_user_u64(x, ptr, retval);		\
+		break;					\
+	default:					\
+		__put_user_unknown();			\
+	}						\
+} while (0)
+
+#ifdef CONFIG_MMU
+#define __put_user_asm(x, addr, err, insn)			\
+do {								\
+	__asm__ __volatile__ (					\
+		"1:\n\t"					\
+		"mov." insn "	%1, %2\n\t"			\
+		"2:\n"						\
+		".section	.fixup,\"ax\"\n"		\
+		"3:\n\t"					\
+		"mov.l	4f, %0\n\t"				\
+		"jmp	@%0\n\t"				\
+		" mov	%3, %0\n\t"				\
+		".balign	4\n"				\
+		"4:	.long	2b\n\t"				\
+		".previous\n"					\
+		".section	__ex_table,\"a\"\n\t"		\
+		".long	1b, 3b\n\t"				\
+		".previous"					\
+		: "=&r" (err)					\
+		: "r" (x), "m" (__m(addr)), "i" (-EFAULT),	\
+		  "0" (err)					\
+		: "memory"					\
+	);							\
+} while (0)
+#else
+#define __put_user_asm(x, addr, err, insn)		\
+do {							\
+	__asm__ __volatile__ (				\
+		"mov." insn "	%0, %1\n\t"		\
+		: /* no outputs */			\
+		: "r" (x), "m" (__m(addr))		\
+		: "memory"				\
+	);						\
+} while (0)
+#endif /* CONFIG_MMU */
+
+#if defined(CONFIG_CPU_LITTLE_ENDIAN)
+#define __put_user_u64(val,addr,retval) \
+({ \
+__asm__ __volatile__( \
+	"1:\n\t" \
+	"mov.l	%R1,%2\n\t" \
+	"mov.l	%S1,%T2\n\t" \
+	"2:\n" \
+	".section	.fixup,\"ax\"\n" \
+	"3:\n\t" \
+	"mov.l	4f,%0\n\t" \
+	"jmp	@%0\n\t" \
+	" mov	%3,%0\n\t" \
+	".balign	4\n" \
+	"4:	.long	2b\n\t" \
+	".previous\n" \
+	".section	__ex_table,\"a\"\n\t" \
+	".long	1b, 3b\n\t" \
+	".previous" \
+	: "=r" (retval) \
+	: "r" (val), "m" (__m(addr)), "i" (-EFAULT), "0" (retval) \
+        : "memory"); })
+#else
+#define __put_user_u64(val,addr,retval) \
+({ \
+__asm__ __volatile__( \
+	"1:\n\t" \
+	"mov.l	%S1,%2\n\t" \
+	"mov.l	%R1,%T2\n\t" \
+	"2:\n" \
+	".section	.fixup,\"ax\"\n" \
+	"3:\n\t" \
+	"mov.l	4f,%0\n\t" \
+	"jmp	@%0\n\t" \
+	" mov	%3,%0\n\t" \
+	".balign	4\n" \
+	"4:	.long	2b\n\t" \
+	".previous\n" \
+	".section	__ex_table,\"a\"\n\t" \
+	".long	1b, 3b\n\t" \
+	".previous" \
+	: "=r" (retval) \
+	: "r" (val), "m" (__m(addr)), "i" (-EFAULT), "0" (retval) \
+        : "memory"); })
+#endif
+
+extern void __put_user_unknown(void);
+
+static inline int
+__strncpy_from_user(unsigned long __dest, unsigned long __user __src, int __count)
+{
+	__kernel_size_t res;
+	unsigned long __dummy, _d, _s, _c;
+
+	__asm__ __volatile__(
+		"9:\n"
+		"mov.b	@%2+, %1\n\t"
+		"cmp/eq	#0, %1\n\t"
+		"bt/s	2f\n"
+		"1:\n"
+		"mov.b	%1, @%3\n\t"
+		"dt	%4\n\t"
+		"bf/s	9b\n\t"
+		" add	#1, %3\n\t"
+		"2:\n\t"
+		"sub	%4, %0\n"
+		"3:\n"
+		".section .fixup,\"ax\"\n"
+		"4:\n\t"
+		"mov.l	5f, %1\n\t"
+		"jmp	@%1\n\t"
+		" mov	%9, %0\n\t"
+		".balign 4\n"
+		"5:	.long 3b\n"
+		".previous\n"
+		".section __ex_table,\"a\"\n"
+		"	.balign 4\n"
+		"	.long 9b,4b\n"
+		".previous"
+		: "=r" (res), "=&z" (__dummy), "=r" (_s), "=r" (_d), "=r"(_c)
+		: "0" (__count), "2" (__src), "3" (__dest), "4" (__count),
+		  "i" (-EFAULT)
+		: "memory", "t");
+
+	return res;
+}
+
+/*
+ * Return the size of a string (including the ending 0 even when we have
+ * exceeded the maximum string length).
+ */
+static inline long __strnlen_user(const char __user *__s, long __n)
+{
+	unsigned long res;
+	unsigned long __dummy;
+
+	__asm__ __volatile__(
+		"1:\t"
+		"mov.b	@(%0,%3), %1\n\t"
+		"cmp/eq	%4, %0\n\t"
+		"bt/s	2f\n\t"
+		" add	#1, %0\n\t"
+		"tst	%1, %1\n\t"
+		"bf	1b\n\t"
+		"2:\n"
+		".section .fixup,\"ax\"\n"
+		"3:\n\t"
+		"mov.l	4f, %1\n\t"
+		"jmp	@%1\n\t"
+		" mov	#0, %0\n"
+		".balign 4\n"
+		"4:	.long 2b\n"
+		".previous\n"
+		".section __ex_table,\"a\"\n"
+		"	.balign 4\n"
+		"	.long 1b,3b\n"
+		".previous"
+		: "=z" (res), "=&r" (__dummy)
+		: "0" (0), "r" (__s), "r" (__n)
+		: "t");
+	return res;
+}
+
+#endif /* __ASM_SH_UACCESS_32_H */