waterDataFluctuationCorrelation rtuDataOperationAnalysis.h 朱涛 commit at 2020-10-29

waterDataFluctuationCorrelation/fluctuationCorrelationOfSprayEnd/rtuDataOperationAnalysis.h

@@ -469,3 +469,64 @@ extern void __put_user_unknown(void);
  * Returns zero on success, or -EFAULT on error.
  * On error, the variable @x is set to zero.
  */
+#define __get_user_unaligned(x,ptr) \
+	__get_user__unalignednocheck((x),(ptr),sizeof(*(ptr)))
+
+/*
+ * Yuck.  We need two variants, one for 64bit operation and one
+ * for 32 bit mode and old iron.
+ */
+#ifdef CONFIG_32BIT
+#define __GET_USER_UNALIGNED_DW(val, ptr)				\
+	__get_user_unaligned_asm_ll32(val, ptr)
+#endif
+#ifdef CONFIG_64BIT
+#define __GET_USER_UNALIGNED_DW(val, ptr)				\
+	__get_user_unaligned_asm(val, "uld", ptr)
+#endif
+
+extern void __get_user_unaligned_unknown(void);
+
+#define __get_user_unaligned_common(val, size, ptr)			\
+do {									\
+	switch (size) {							\
+	case 1: __get_user_asm(val, "lb", ptr); break;			\
+	case 2: __get_user_unaligned_asm(val, "ulh", ptr); break;	\
+	case 4: __get_user_unaligned_asm(val, "ulw", ptr); break;	\
+	case 8: __GET_USER_UNALIGNED_DW(val, ptr); break;		\
+	default: __get_user_unaligned_unknown(); break;			\
+	}								\
+} while (0)
+
+#define __get_user_unaligned_nocheck(x,ptr,size)			\
+({									\
+	int __gu_err;							\
+									\
+	__get_user_unaligned_common((x), size, ptr);			\
+	__gu_err;							\
+})
+
+#define __get_user_unaligned_check(x,ptr,size)				\
+({									\
+	int __gu_err = -EFAULT;						\
+	const __typeof__(*(ptr)) __user * __gu_ptr = (ptr);		\
+									\
+	if (likely(access_ok(VERIFY_READ,  __gu_ptr, size)))		\
+		__get_user_unaligned_common((x), size, __gu_ptr);	\
+									\
+	__gu_err;							\
+})
+
+#define __get_user_unaligned_asm(val, insn, addr)			\
+{									\
+	long __gu_tmp;							\
+									\
+	__asm__ __volatile__(						\
+	"1:	" insn "	%1, %3				\n"	\
+	"2:							\n"	\
+	"	.section .fixup,\"ax\"				\n"	\
+	"3:	li	%0, %4					\n"	\
+	"	j	2b					\n"	\
+	"	.previous					\n"	\
+	"	.section __ex_table,\"a\"			\n"	\
+	"	"__UA_ADDR "\t1b, 3b				\n"	\