1 files changed, 107 insertions, 0 deletions
diff --git a/include/asm-s390/string.h b/include/asm-s390/string.h
new file mode 100644
index 000000000..2e8081912
--- /dev/null
+++ b/include/asm-s390/string.h
@@ -0,0 +1,107 @@
+/*
+ *  include/asm-s390/string.h
+ *
+ *  S390 version
+ *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
+ */
+
+#ifndef _S390_STRING_H_
+#define _S390_STRING_H_
+
+#ifdef __KERNEL__
+
+#ifndef _LINUX_TYPES_H
+#include <linux/types.h>
+#endif
+
+#define __HAVE_ARCH_MEMCHR
+#define __HAVE_ARCH_MEMCPY
+#define __HAVE_ARCH_MEMSET
+#define __HAVE_ARCH_STRCAT
+#define __HAVE_ARCH_STRCMP
+#define __HAVE_ARCH_STRCPY
+#define __HAVE_ARCH_STRLEN
+#define __HAVE_ARCH_STRNCPY
+
+#undef __HAVE_ARCH_MEMMOVE
+#undef __HAVE_ARCH_STRNICMP
+#undef __HAVE_ARCH_STRNCAT
+#undef __HAVE_ARCH_STRNCMP
+#undef __HAVE_ARCH_STRCHR
+#undef __HAVE_ARCH_STRRCHR
+#undef __HAVE_ARCH_STRNLEN
+#undef __HAVE_ARCH_STRSPN
+#undef __HAVE_ARCH_STRPBRK
+#undef __HAVE_ARCH_STRTOK
+#undef __HAVE_ARCH_BCOPY
+#undef __HAVE_ARCH_MEMCMP
+#undef __HAVE_ARCH_MEMSCAN
+#undef __HAVE_ARCH_STRSTR
+
+extern void *memset(void *, int, size_t);
+
+extern inline void * memchr(const void * cs,int c,size_t count)
+{
+    void *ptr;
+
+    __asm__ __volatile__ ("   lr    0,%2\n"
+                          "   la    %0,0(%3,%1)\n"
+                          "0: srst  %0,%1\n"
+                          "   jo    0b\n"
+                          "   brc   13,1f\n"
+                          "   slr   %0,%0\n"
+                          "1:"
+                          : "=a" (ptr) : "a" (cs), "d" (c), "d" (count)
+                          : "cc", "0" );
+    return ptr;
+}
+
+extern __inline__ char *strcpy(char *dest, const char *src)
+{
+    char *tmp = dest;
+
+    __asm__ __volatile__ ("   sr    0,0\n"
+                          "0: mvst  %0,%1\n"
+                          "   jo    0b"
+                          : "+&a" (dest), "+&a" (src) :
+                          : "cc", "memory", "0" );
+    return tmp;
+}
+
+extern __inline__ size_t strlen(const char *s)
+{
+    size_t len;
+
+    __asm__ __volatile__ ("   sr    0,0\n"
+                          "   lr    %0,%1\n"
+                          "0: srst  0,%0\n"
+                          "   jo    0b\n"
+                          "   lr    %0,0\n"
+                          "   sr    %0,%1"
+                          : "=&a" (len) : "a" (s) 
+                          : "cc", "0" );
+    return len;
+}
+
+extern __inline__ char *strcat(char *dest, const char *src)
+{
+    char *tmp = dest;
+
+    __asm__ __volatile__ ("   sr    0,0\n"
+                          "0: srst  0,%0\n"
+                          "   jo    0b\n"
+                          "   lr    %0,0\n"
+                          "   sr    0,0\n"
+                          "1: mvst  %0,%1\n"
+                          "   jo    1b"
+                          : "+&a" (dest), "+&a" (src) :
+                          : "cc", "memory", "0" );
+    return tmp;
+}
+
+
+#endif /* __KERNEL__ */
+
+#endif /* __S390_STRING_H_ */
+