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-rw-r--r--ANDROID_3.4.5/arch/s390/lib/string.c389
1 files changed, 0 insertions, 389 deletions
diff --git a/ANDROID_3.4.5/arch/s390/lib/string.c b/ANDROID_3.4.5/arch/s390/lib/string.c
deleted file mode 100644
index 4143b7c1..00000000
--- a/ANDROID_3.4.5/arch/s390/lib/string.c
+++ /dev/null
@@ -1,389 +0,0 @@
-/*
- * arch/s390/lib/string.c
- * Optimized string functions
- *
- * S390 version
- * Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
- */
-
-#define IN_ARCH_STRING_C 1
-
-#include <linux/types.h>
-#include <linux/module.h>
-
-/*
- * Helper functions to find the end of a string
- */
-static inline char *__strend(const char *s)
-{
- register unsigned long r0 asm("0") = 0;
-
- asm volatile ("0: srst %0,%1\n"
- " jo 0b"
- : "+d" (r0), "+a" (s) : : "cc" );
- return (char *) r0;
-}
-
-static inline char *__strnend(const char *s, size_t n)
-{
- register unsigned long r0 asm("0") = 0;
- const char *p = s + n;
-
- asm volatile ("0: srst %0,%1\n"
- " jo 0b"
- : "+d" (p), "+a" (s) : "d" (r0) : "cc" );
- return (char *) p;
-}
-
-/**
- * strlen - Find the length of a string
- * @s: The string to be sized
- *
- * returns the length of @s
- */
-size_t strlen(const char *s)
-{
-#if __GNUC__ < 4
- return __strend(s) - s;
-#else
- return __builtin_strlen(s);
-#endif
-}
-EXPORT_SYMBOL(strlen);
-
-/**
- * strnlen - Find the length of a length-limited string
- * @s: The string to be sized
- * @n: The maximum number of bytes to search
- *
- * returns the minimum of the length of @s and @n
- */
-size_t strnlen(const char * s, size_t n)
-{
- return __strnend(s, n) - s;
-}
-EXPORT_SYMBOL(strnlen);
-
-/**
- * strcpy - Copy a %NUL terminated string
- * @dest: Where to copy the string to
- * @src: Where to copy the string from
- *
- * returns a pointer to @dest
- */
-char *strcpy(char *dest, const char *src)
-{
-#if __GNUC__ < 4
- register int r0 asm("0") = 0;
- char *ret = dest;
-
- asm volatile ("0: mvst %0,%1\n"
- " jo 0b"
- : "+&a" (dest), "+&a" (src) : "d" (r0)
- : "cc", "memory" );
- return ret;
-#else
- return __builtin_strcpy(dest, src);
-#endif
-}
-EXPORT_SYMBOL(strcpy);
-
-/**
- * strlcpy - Copy a %NUL terminated string into a sized buffer
- * @dest: Where to copy the string to
- * @src: Where to copy the string from
- * @size: size of destination buffer
- *
- * Compatible with *BSD: the result is always a valid
- * NUL-terminated string that fits in the buffer (unless,
- * of course, the buffer size is zero). It does not pad
- * out the result like strncpy() does.
- */
-size_t strlcpy(char *dest, const char *src, size_t size)
-{
- size_t ret = __strend(src) - src;
-
- if (size) {
- size_t len = (ret >= size) ? size-1 : ret;
- dest[len] = '\0';
- __builtin_memcpy(dest, src, len);
- }
- return ret;
-}
-EXPORT_SYMBOL(strlcpy);
-
-/**
- * strncpy - Copy a length-limited, %NUL-terminated string
- * @dest: Where to copy the string to
- * @src: Where to copy the string from
- * @n: The maximum number of bytes to copy
- *
- * The result is not %NUL-terminated if the source exceeds
- * @n bytes.
- */
-char *strncpy(char *dest, const char *src, size_t n)
-{
- size_t len = __strnend(src, n) - src;
- __builtin_memset(dest + len, 0, n - len);
- __builtin_memcpy(dest, src, len);
- return dest;
-}
-EXPORT_SYMBOL(strncpy);
-
-/**
- * strcat - Append one %NUL-terminated string to another
- * @dest: The string to be appended to
- * @src: The string to append to it
- *
- * returns a pointer to @dest
- */
-char *strcat(char *dest, const char *src)
-{
- register int r0 asm("0") = 0;
- unsigned long dummy;
- char *ret = dest;
-
- asm volatile ("0: srst %0,%1\n"
- " jo 0b\n"
- "1: mvst %0,%2\n"
- " jo 1b"
- : "=&a" (dummy), "+a" (dest), "+a" (src)
- : "d" (r0), "0" (0UL) : "cc", "memory" );
- return ret;
-}
-EXPORT_SYMBOL(strcat);
-
-/**
- * strlcat - Append a length-limited, %NUL-terminated string to another
- * @dest: The string to be appended to
- * @src: The string to append to it
- * @n: The size of the destination buffer.
- */
-size_t strlcat(char *dest, const char *src, size_t n)
-{
- size_t dsize = __strend(dest) - dest;
- size_t len = __strend(src) - src;
- size_t res = dsize + len;
-
- if (dsize < n) {
- dest += dsize;
- n -= dsize;
- if (len >= n)
- len = n - 1;
- dest[len] = '\0';
- __builtin_memcpy(dest, src, len);
- }
- return res;
-}
-EXPORT_SYMBOL(strlcat);
-
-/**
- * strncat - Append a length-limited, %NUL-terminated string to another
- * @dest: The string to be appended to
- * @src: The string to append to it
- * @n: The maximum numbers of bytes to copy
- *
- * returns a pointer to @dest
- *
- * Note that in contrast to strncpy, strncat ensures the result is
- * terminated.
- */
-char *strncat(char *dest, const char *src, size_t n)
-{
- size_t len = __strnend(src, n) - src;
- char *p = __strend(dest);
-
- p[len] = '\0';
- __builtin_memcpy(p, src, len);
- return dest;
-}
-EXPORT_SYMBOL(strncat);
-
-/**
- * strcmp - Compare two strings
- * @cs: One string
- * @ct: Another string
- *
- * returns 0 if @cs and @ct are equal,
- * < 0 if @cs is less than @ct
- * > 0 if @cs is greater than @ct
- */
-int strcmp(const char *cs, const char *ct)
-{
- register int r0 asm("0") = 0;
- int ret = 0;
-
- asm volatile ("0: clst %2,%3\n"
- " jo 0b\n"
- " je 1f\n"
- " ic %0,0(%2)\n"
- " ic %1,0(%3)\n"
- " sr %0,%1\n"
- "1:"
- : "+d" (ret), "+d" (r0), "+a" (cs), "+a" (ct)
- : : "cc" );
- return ret;
-}
-EXPORT_SYMBOL(strcmp);
-
-/**
- * strrchr - Find the last occurrence of a character in a string
- * @s: The string to be searched
- * @c: The character to search for
- */
-char * strrchr(const char * s, int c)
-{
- size_t len = __strend(s) - s;
-
- if (len)
- do {
- if (s[len] == (char) c)
- return (char *) s + len;
- } while (--len > 0);
- return NULL;
-}
-EXPORT_SYMBOL(strrchr);
-
-/**
- * strstr - Find the first substring in a %NUL terminated string
- * @s1: The string to be searched
- * @s2: The string to search for
- */
-char * strstr(const char * s1,const char * s2)
-{
- int l1, l2;
-
- l2 = __strend(s2) - s2;
- if (!l2)
- return (char *) s1;
- l1 = __strend(s1) - s1;
- while (l1-- >= l2) {
- register unsigned long r2 asm("2") = (unsigned long) s1;
- register unsigned long r3 asm("3") = (unsigned long) l2;
- register unsigned long r4 asm("4") = (unsigned long) s2;
- register unsigned long r5 asm("5") = (unsigned long) l2;
- int cc;
-
- asm volatile ("0: clcle %1,%3,0\n"
- " jo 0b\n"
- " ipm %0\n"
- " srl %0,28"
- : "=&d" (cc), "+a" (r2), "+a" (r3),
- "+a" (r4), "+a" (r5) : : "cc" );
- if (!cc)
- return (char *) s1;
- s1++;
- }
- return NULL;
-}
-EXPORT_SYMBOL(strstr);
-
-/**
- * memchr - Find a character in an area of memory.
- * @s: The memory area
- * @c: The byte to search for
- * @n: The size of the area.
- *
- * returns the address of the first occurrence of @c, or %NULL
- * if @c is not found
- */
-void *memchr(const void *s, int c, size_t n)
-{
- register int r0 asm("0") = (char) c;
- const void *ret = s + n;
-
- asm volatile ("0: srst %0,%1\n"
- " jo 0b\n"
- " jl 1f\n"
- " la %0,0\n"
- "1:"
- : "+a" (ret), "+&a" (s) : "d" (r0) : "cc" );
- return (void *) ret;
-}
-EXPORT_SYMBOL(memchr);
-
-/**
- * memcmp - Compare two areas of memory
- * @cs: One area of memory
- * @ct: Another area of memory
- * @count: The size of the area.
- */
-int memcmp(const void *cs, const void *ct, size_t n)
-{
- register unsigned long r2 asm("2") = (unsigned long) cs;
- register unsigned long r3 asm("3") = (unsigned long) n;
- register unsigned long r4 asm("4") = (unsigned long) ct;
- register unsigned long r5 asm("5") = (unsigned long) n;
- int ret;
-
- asm volatile ("0: clcle %1,%3,0\n"
- " jo 0b\n"
- " ipm %0\n"
- " srl %0,28"
- : "=&d" (ret), "+a" (r2), "+a" (r3), "+a" (r4), "+a" (r5)
- : : "cc" );
- if (ret)
- ret = *(char *) r2 - *(char *) r4;
- return ret;
-}
-EXPORT_SYMBOL(memcmp);
-
-/**
- * memscan - Find a character in an area of memory.
- * @s: The memory area
- * @c: The byte to search for
- * @n: The size of the area.
- *
- * returns the address of the first occurrence of @c, or 1 byte past
- * the area if @c is not found
- */
-void *memscan(void *s, int c, size_t n)
-{
- register int r0 asm("0") = (char) c;
- const void *ret = s + n;
-
- asm volatile ("0: srst %0,%1\n"
- " jo 0b\n"
- : "+a" (ret), "+&a" (s) : "d" (r0) : "cc" );
- return (void *) ret;
-}
-EXPORT_SYMBOL(memscan);
-
-/**
- * memcpy - Copy one area of memory to another
- * @dest: Where to copy to
- * @src: Where to copy from
- * @n: The size of the area.
- *
- * returns a pointer to @dest
- */
-void *memcpy(void *dest, const void *src, size_t n)
-{
- return __builtin_memcpy(dest, src, n);
-}
-EXPORT_SYMBOL(memcpy);
-
-/**
- * memset - Fill a region of memory with the given value
- * @s: Pointer to the start of the area.
- * @c: The byte to fill the area with
- * @n: The size of the area.
- *
- * returns a pointer to @s
- */
-void *memset(void *s, int c, size_t n)
-{
- char *xs;
-
- if (c == 0)
- return __builtin_memset(s, 0, n);
-
- xs = (char *) s;
- if (n > 0)
- do {
- *xs++ = c;
- } while (--n > 0);
- return s;
-}
-EXPORT_SYMBOL(memset);
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