1 files changed, 166 insertions, 0 deletions

diff --git a/include/asm-mips/string.h b/include/asm-mips/string.h
new file mode 100644
index 000000000000..b18345504f8a
--- /dev/null
+++ b/include/asm-mips/string.h
@@ -0,0 +1,166 @@
+/*
+ * 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.
+ *
+ * Copyright (c) 1994, 95, 96, 97, 98, 2000, 01 Ralf Baechle
+ * Copyright (c) 2000 by Silicon Graphics, Inc.
+ * Copyright (c) 2001 MIPS Technologies, Inc.
+ */
+#ifndef _ASM_STRING_H
+#define _ASM_STRING_H
+
+#include <linux/config.h>
+
+/*
+ * Most of the inline functions are rather naive implementations so I just
+ * didn't bother updating them for 64-bit ...
+ */
+#ifdef CONFIG_MIPS32
+
+#ifndef IN_STRING_C
+
+#define __HAVE_ARCH_STRCPY
+static __inline__ char *strcpy(char *__dest, __const__ char *__src)
+{
+  char *__xdest = __dest;
+
+  __asm__ __volatile__(
+        ".set\tnoreorder\n\t"
+        ".set\tnoat\n"
+        "1:\tlbu\t$1,(%1)\n\t"
+        "addiu\t%1,1\n\t"
+        "sb\t$1,(%0)\n\t"
+        "bnez\t$1,1b\n\t"
+        "addiu\t%0,1\n\t"
+        ".set\tat\n\t"
+        ".set\treorder"
+        : "=r" (__dest), "=r" (__src)
+        : "0" (__dest), "1" (__src)
+        : "memory");
+
+  return __xdest;
+}
+
+#define __HAVE_ARCH_STRNCPY
+static __inline__ char *strncpy(char *__dest, __const__ char *__src, size_t __n)
+{
+  char *__xdest = __dest;
+
+  if (__n == 0)
+    return __xdest;
+
+  __asm__ __volatile__(
+        ".set\tnoreorder\n\t"
+        ".set\tnoat\n"
+        "1:\tlbu\t$1,(%1)\n\t"
+        "subu\t%2,1\n\t"
+        "sb\t$1,(%0)\n\t"
+        "beqz\t$1,2f\n\t"
+        "addiu\t%0,1\n\t"
+        "bnez\t%2,1b\n\t"
+        "addiu\t%1,1\n"
+        "2:\n\t"
+        ".set\tat\n\t"
+        ".set\treorder"
+        : "=r" (__dest), "=r" (__src), "=r" (__n)
+        : "0" (__dest), "1" (__src), "2" (__n)
+        : "memory");
+
+  return __xdest;
+}
+
+#define __HAVE_ARCH_STRCMP
+static __inline__ int strcmp(__const__ char *__cs, __const__ char *__ct)
+{
+  int __res;
+
+  __asm__ __volatile__(
+        ".set\tnoreorder\n\t"
+        ".set\tnoat\n\t"
+        "lbu\t%2,(%0)\n"
+        "1:\tlbu\t$1,(%1)\n\t"
+        "addiu\t%0,1\n\t"
+        "bne\t$1,%2,2f\n\t"
+        "addiu\t%1,1\n\t"
+        "bnez\t%2,1b\n\t"
+        "lbu\t%2,(%0)\n\t"
+#if defined(CONFIG_CPU_R3000)
+        "nop\n\t"
+#endif
+        "move\t%2,$1\n"
+        "2:\tsubu\t%2,$1\n"
+        "3:\t.set\tat\n\t"
+        ".set\treorder"
+        : "=r" (__cs), "=r" (__ct), "=r" (__res)
+        : "0" (__cs), "1" (__ct));
+
+  return __res;
+}
+
+#endif /* !defined(IN_STRING_C) */
+
+#define __HAVE_ARCH_STRNCMP
+static __inline__ int
+strncmp(__const__ char *__cs, __const__ char *__ct, size_t __count)
+{
+        int __res;
+
+        __asm__ __volatile__(
+        ".set\tnoreorder\n\t"
+        ".set\tnoat\n"
+        "1:\tlbu\t%3,(%0)\n\t"
+        "beqz\t%2,2f\n\t"
+        "lbu\t$1,(%1)\n\t"
+        "subu\t%2,1\n\t"
+        "bne\t$1,%3,3f\n\t"
+        "addiu\t%0,1\n\t"
+        "bnez\t%3,1b\n\t"
+        "addiu\t%1,1\n"
+        "2:\n\t"
+#if defined(CONFIG_CPU_R3000)
+        "nop\n\t"
+#endif
+        "move\t%3,$1\n"
+        "3:\tsubu\t%3,$1\n\t"
+        ".set\tat\n\t"
+        ".set\treorder"
+        : "=r" (__cs), "=r" (__ct), "=r" (__count), "=r" (__res)
+        : "0" (__cs), "1" (__ct), "2" (__count));
+
+        return __res;
+}
+#endif /* CONFIG_MIPS32 */
+
+#define __HAVE_ARCH_MEMSET
+extern void *memset(void *__s, int __c, size_t __count);
+
+#define __HAVE_ARCH_MEMCPY
+extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
+
+#define __HAVE_ARCH_MEMMOVE
+extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
+
+#ifdef CONFIG_MIPS32
+#define __HAVE_ARCH_MEMSCAN
+static __inline__ void *memscan(void *__addr, int __c, size_t __size)
+{
+        char *__end = (char *)__addr + __size;
+        unsigned char __uc = (unsigned char) __c;
+
+        __asm__(".set\tpush\n\t"
+                ".set\tnoat\n\t"
+                ".set\treorder\n\t"
+                "1:\tbeq\t%0,%1,2f\n\t"
+                "addiu\t%0,1\n\t"
+                "lbu\t$1,-1(%0)\n\t"
+                "bne\t$1,%z4,1b\n"
+                "2:\t.set\tpop"
+                : "=r" (__addr), "=r" (__end)
+                : "0" (__addr), "1" (__end), "Jr" (__uc));
+
+        return __addr;
+}
+#endif /* CONFIG_MIPS32 */
+
+#endif /* _ASM_STRING_H */