LCOV - code coverage report
Current view: top level - libc/string - memmove.c (source / functions) Coverage Total Hit
Test: skiboot.info Lines: 100.0 % 8 8
Test Date: 2025-01-24 18:40:10 Functions: 100.0 % 1 1
Branches: - 0 0

             Branch data     Line data    Source code
       1                 :             : /******************************************************************************
       2                 :             :  * Copyright (c) 2004, 2008 IBM Corporation
       3                 :             :  * All rights reserved.
       4                 :             :  * This program and the accompanying materials
       5                 :             :  * are made available under the terms of the BSD License
       6                 :             :  * which accompanies this distribution, and is available at
       7                 :             :  * http://www.opensource.org/licenses/bsd-license.php
       8                 :             :  *
       9                 :             :  * Contributors:
      10                 :             :  *     IBM Corporation - initial implementation
      11                 :             :  *****************************************************************************/
      12                 :             : 
      13                 :             : #include <stddef.h>
      14                 :             : 
      15                 :             : void *memcpy(void *dest, const void *src, size_t n);
      16                 :             : void *memmove(void *dest, const void *src, size_t n);
      17                 :          15 : void *memmove(void *dest, const void *src, size_t n)
      18                 :             : {
      19                 :             :         /* Do the buffers overlap in a bad way? */
      20                 :          15 :         if (src < dest && src + n >= dest) {
      21                 :             :                 char *cdest;
      22                 :             :                 const char *csrc;
      23                 :             :                 int i;
      24                 :             : 
      25                 :             :                 /* Copy from end to start */
      26                 :           5 :                 cdest = dest + n - 1;
      27                 :           5 :                 csrc = src + n - 1;
      28                 :          55 :                 for (i = 0; i < n; i++) {
      29                 :          50 :                         *cdest-- = *csrc--;
      30                 :             :                 }
      31                 :           5 :                 return dest;
      32                 :             :         } else {
      33                 :             :                 /* Normal copy is possible */
      34                 :          10 :                 return memcpy(dest, src, n);
      35                 :             :         }
      36                 :             : }
        

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