1 files changed, 50 insertions, 0 deletions

diff --git a/arch/arm/include/asm/string.h b/arch/arm/include/asm/string.h
new file mode 100644
index 000000000000..e50c4a39b699
--- /dev/null
+++ b/arch/arm/include/asm/string.h
@@ -0,0 +1,50 @@
+#ifndef __ASM_ARM_STRING_H
+#define __ASM_ARM_STRING_H
+
+/*
+ * We don't do inline string functions, since the
+ * optimised inline asm versions are not small.
+ */
+
+#define __HAVE_ARCH_STRRCHR
+extern char * strrchr(const char * s, int c);
+
+#define __HAVE_ARCH_STRCHR
+extern char * strchr(const char * s, int c);
+
+#define __HAVE_ARCH_MEMCPY
+extern void * memcpy(void *, const void *, __kernel_size_t);
+
+#define __HAVE_ARCH_MEMMOVE
+extern void * memmove(void *, const void *, __kernel_size_t);
+
+#define __HAVE_ARCH_MEMCHR
+extern void * memchr(const void *, int, __kernel_size_t);
+
+#define __HAVE_ARCH_MEMZERO
+#define __HAVE_ARCH_MEMSET
+extern void * memset(void *, int, __kernel_size_t);
+
+extern void __memzero(void *ptr, __kernel_size_t n);
+
+#define memset(p,v,n)                                                   \
+        ({                                                              \
+                void *__p = (p); size_t __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)                                                    \
+        ({                                                              \
+                void *__p = (p); size_t __n = n;                        \
+                if ((__n) != 0)                                         \
+                        __memzero((__p),(__n));                         \
+                (__p);                                                  \
+         })
+
+#endif