efHeterogeneousSynchronization basicAlgorithmEncapsulation.h 宁志军 commit at 2020-12-18

efHeterogeneousSynchronization/dataCalculation/basicAlgorithmEncapsulation.h

@@ -168,3 +168,81 @@ struct __large_struct { unsigned long buf[100]; };
 /* Unfortunately, we can't get an unaligned access trap for the sub-word
    load, so we have to do a general unaligned operation.  */
 
+#define __get_user_16(addr)						\
+{									\
+	long __gu_tmp;							\
+	__asm__("1: ldq_u %0,0(%3)\n"					\
+	"2:	ldq_u %1,1(%3)\n"					\
+	"	extwl %0,%3,%0\n"					\
+	"	extwh %1,%3,%1\n"					\
+	"	or %0,%1,%0\n"						\
+	"3:\n"								\
+	".section __ex_table,\"a\"\n"					\
+	"	.long 1b - .\n"						\
+	"	lda %0, 3b-1b(%2)\n"					\
+	"	.long 2b - .\n"						\
+	"	lda %0, 3b-2b(%2)\n"					\
+	".previous"							\
+		: "=&r"(__gu_val), "=&r"(__gu_tmp), "=r"(__gu_err)	\
+		: "r"(addr), "2"(__gu_err));				\
+}
+
+#define __get_user_8(addr)						\
+	__asm__("1: ldq_u %0,0(%2)\n"					\
+	"	extbl %0,%2,%0\n"					\
+	"2:\n"								\
+	".section __ex_table,\"a\"\n"					\
+	"	.long 1b - .\n"						\
+	"	lda %0, 2b-1b(%1)\n"					\
+	".previous"							\
+		: "=&r"(__gu_val), "=r"(__gu_err)			\
+		: "r"(addr), "1"(__gu_err))
+#endif
+
+extern void __put_user_unknown(void);
+
+#define __put_user_nocheck(x,ptr,size)				\
+({								\
+	long __pu_err = 0;					\
+	__chk_user_ptr(ptr);					\
+	switch (size) {						\
+	  case 1: __put_user_8(x,ptr); break;			\
+	  case 2: __put_user_16(x,ptr); break;			\
+	  case 4: __put_user_32(x,ptr); break;			\
+	  case 8: __put_user_64(x,ptr); break;			\
+	  default: __put_user_unknown(); break;			\
+	}							\
+	__pu_err;						\
+})
+
+#define __put_user_check(x,ptr,size,segment)				\
+({									\
+	long __pu_err = -EFAULT;					\
+	__typeof__(*(ptr)) __user *__pu_addr = (ptr);			\
+	if (__access_ok((unsigned long)__pu_addr,size,segment)) {	\
+		__pu_err = 0;						\
+		switch (size) {						\
+		  case 1: __put_user_8(x,__pu_addr); break;		\
+		  case 2: __put_user_16(x,__pu_addr); break;		\
+		  case 4: __put_user_32(x,__pu_addr); break;		\
+		  case 8: __put_user_64(x,__pu_addr); break;		\
+		  default: __put_user_unknown(); break;			\
+		}							\
+	}								\
+	__pu_err;							\
+})
+
+/*
+ * The "__put_user_xx()" macros tell gcc they read from memory
+ * instead of writing: this is because they do not write to
+ * any memory gcc knows about, so there are no aliasing issues
+ */
+#define __put_user_64(x,addr)					\
+__asm__ __volatile__("1: stq %r2,%1\n"				\
+	"2:\n"							\
+	".section __ex_table,\"a\"\n"				\
+	"	.long 1b - .\n"					\
+	"	lda $31,2b-1b(%0)\n"				\
+	".previous"						\
+		: "=r"(__pu_err)				\
+		: "m" (__m(addr)), "rJ" (x), "0"(__pu_err))