GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/arch/riscv/include/asm/string.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2011 Andes Technology Corporation
+ * Copyright (C) 2010 Shawn Lin (nobuhiro@andestech.com)
+ * Copyright (C) 2011 Macpaul Lin (macpaul@andestech.com)
+ * Copyright (C) 2017 Rick Chen (rick@andestech.com)
+ *
+ * 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.
+ */
+
+#ifndef __ASM_RISCV_STRING_H
+#define __ASM_RISCV_STRING_H
+
+/*
+ * We don't do inline string functions, since the
+ * optimised inline asm versions are not small.
+ */
+
+#undef __HAVE_ARCH_STRRCHR
+#undef __HAVE_ARCH_STRCHR
+#undef __HAVE_ARCH_MEMCPY
+#undef __HAVE_ARCH_MEMMOVE
+#undef __HAVE_ARCH_MEMCHR
+#undef __HAVE_ARCH_MEMZERO
+#undef __HAVE_ARCH_MEMSET
+
+#ifdef CONFIG_MARCO_MEMSET
+#define memset(_p, _v, _n)	\
+	(typeof(_p) (p) = (_p); \
+	 typeof(_v) (v) = (_v); \
+	 typeof(_n) (n) = (_n); \
+	 {								\
+		if ((n) != 0) {						\
+			if (__builtin_constant_p((v)) && (v) == 0)	\
+				__memzero((p), (n));			\
+			else						\
+				memset((p), (v), (n));			\
+		}							\
+		(p);							\
+	})
+
+#define memzero(_p, _n) \
+	(typeof(_p) (p) = (_p); \
+	 typeof(_n) (n) = (_n); \
+	 { if ((n) != 0) __memzero((p), (n)); (p); })
+#endif
+
+#endif /* __ASM_RISCV_STRING_H */