1 files changed, 0 insertions, 72 deletions
diff --git a/libc/string/memmove.c b/libc/string/memmove.c
deleted file mode 100644
index fcaf4ee..0000000
--- a/libc/string/memmove.c
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *  * Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  * Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#include <string.h>
-
-void *memmove(void *dst, const void *src, size_t n)
-{
-  const char *p = src;
-  char *q = dst;
-  if (__builtin_expect(q < p, 1)) {
-    return memcpy(dst, src, n);
-  } else {
-#define PRELOAD_DISTANCE 64
-      /* a semi-optimized memmove(). we're preloading the src and dst buffers
-       * as we go */
-    size_t c0, c1, i;
-    p += n;
-    q += n;
-    /* note: we preload the destination as well, because the 1-byte at a time
-     * copy below doesn't take advantage of the write-buffer, we need
-     * to use the cache instead as a poor man's write-combiner */
-    __builtin_prefetch(p-1);
-    __builtin_prefetch(q-1);
-    if (PRELOAD_DISTANCE > 32) {
-        __builtin_prefetch(p-(32+1));
-        __builtin_prefetch(q-(32+1));
-    }
-    /* do the prefetech as soon as possible, prevent the compiler to
-     * reorder the instructions above the prefetch */
-    asm volatile("":::"memory");
-    c0 = n & 0x1F; /* cache-line is 32 bytes */
-    c1 = n >> 5;
-    while ( c1-- ) {
-        /* ARMv6 can have up to 3 memory access outstanding */
-      __builtin_prefetch(p - (PRELOAD_DISTANCE+1));
-      __builtin_prefetch(q - (PRELOAD_DISTANCE+1));
-      asm volatile("":::"memory");
-      for (i=0 ; i<32 ; i++) {
-        *--q = *--p;
-      }
-    }
-    while ( c0-- ) {
-      *--q = *--p;
-    }
-  }
-
-  return dst;
-}