1 files changed, 92 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/string.h b/arch/powerpc/include/asm/string.h
new file mode 100644
index 000000000..60ba22770
--- /dev/null
+++ b/arch/powerpc/include/asm/string.h
@@ -0,0 +1,92 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_POWERPC_STRING_H
+#define _ASM_POWERPC_STRING_H
+
+#ifdef __KERNEL__
+
+#ifndef CONFIG_KASAN
+#define __HAVE_ARCH_STRNCPY
+#define __HAVE_ARCH_STRNCMP
+#define __HAVE_ARCH_MEMCHR
+#define __HAVE_ARCH_MEMCMP
+#define __HAVE_ARCH_MEMSET16
+#endif
+
+#define __HAVE_ARCH_MEMSET
+#define __HAVE_ARCH_MEMCPY
+#define __HAVE_ARCH_MEMMOVE
+#define __HAVE_ARCH_MEMCPY_FLUSHCACHE
+
+extern char * strcpy(char *,const char *);
+extern char * strncpy(char *,const char *, __kernel_size_t);
+extern __kernel_size_t strlen(const char *);
+extern int strcmp(const char *,const char *);
+extern int strncmp(const char *, const char *, __kernel_size_t);
+extern char * strcat(char *, const char *);
+extern void * memset(void *,int,__kernel_size_t);
+extern void * memcpy(void *,const void *,__kernel_size_t);
+extern void * memmove(void *,const void *,__kernel_size_t);
+extern int memcmp(const void *,const void *,__kernel_size_t);
+extern void * memchr(const void *,int,__kernel_size_t);
+void memcpy_flushcache(void *dest, const void *src, size_t size);
+
+#ifdef CONFIG_KASAN
+/* __mem variants are used by KASAN to implement instrumented meminstrinsics. */
+#ifdef CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX
+#define __memset memset
+#define __memcpy memcpy
+#define __memmove memmove
+#else /* CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX */
+void *__memset(void *s, int c, __kernel_size_t count);
+void *__memcpy(void *to, const void *from, __kernel_size_t n);
+void *__memmove(void *to, const void *from, __kernel_size_t n);
+#ifndef __SANITIZE_ADDRESS__
+/*
+ * For files that are not instrumented (e.g. mm/slub.c) we
+ * should use not instrumented version of mem* functions.
+ */
+#define memcpy(dst, src, len) __memcpy(dst, src, len)
+#define memmove(dst, src, len) __memmove(dst, src, len)
+#define memset(s, c, n) __memset(s, c, n)
+
+#ifndef __NO_FORTIFY
+#define __NO_FORTIFY /* FORTIFY_SOURCE uses __builtin_memcpy, etc. */
+#endif
+#endif /* !__SANITIZE_ADDRESS__ */
+#endif /* CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX */
+#endif /* CONFIG_KASAN */
+
+#ifdef CONFIG_PPC64
+#ifndef CONFIG_KASAN
+#define __HAVE_ARCH_MEMSET32
+#define __HAVE_ARCH_MEMSET64
+
+extern void *__memset16(uint16_t *, uint16_t v, __kernel_size_t);
+extern void *__memset32(uint32_t *, uint32_t v, __kernel_size_t);
+extern void *__memset64(uint64_t *, uint64_t v, __kernel_size_t);
+
+static inline void *memset16(uint16_t *p, uint16_t v, __kernel_size_t n)
+{
+	return __memset16(p, v, n * 2);
+}
+
+static inline void *memset32(uint32_t *p, uint32_t v, __kernel_size_t n)
+{
+	return __memset32(p, v, n * 4);
+}
+
+static inline void *memset64(uint64_t *p, uint64_t v, __kernel_size_t n)
+{
+	return __memset64(p, v, n * 8);
+}
+#endif
+#else
+#ifndef CONFIG_KASAN
+#define __HAVE_ARCH_STRLEN
+#endif
+
+extern void *memset16(uint16_t *, uint16_t, __kernel_size_t);
+#endif
+#endif /* __KERNEL__ */
+
+#endif	/* _ASM_POWERPC_STRING_H */