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Annotation of qemu/roms/SLOF/lib/libc/stdlib/realloc.c, revision 1.1.1.1

1.1       root        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: 
                     14: #include "stdlib.h"
                     15: #include "string.h"
                     16: #include "malloc_defs.h"
                     17: 
                     18: void *
                     19: realloc(void *ptr, size_t size)
                     20: {
                     21:        struct chunk *header;
                     22:        char *newptr, *start;
                     23: 
                     24:        header = (struct chunk *) ptr;
                     25:        header--;
                     26: 
                     27:        if (size <= header->length)
                     28:                return ptr;
                     29: 
                     30:        newptr = (char *) malloc(size);
                     31:        if (newptr == NULL)
                     32:                return 0;
                     33: 
                     34:        start = newptr;
                     35:        memcpy((void *) newptr, (const void *) ptr, header->length);
                     36: 
                     37:        header->inuse = 0;
                     38: 
                     39:        return start;
                     40: }

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