1 /*

     2  * malloc-like functions for system emulation.

     3  *

     4  * Copyright (c) 2006 Fabrice Bellard

     5  *

     6  * Permission is hereby granted, free of charge, to any person obtaining a copy

     7  * of this software and associated documentation files (the "Software"), to deal

     8  * in the Software without restriction, including without limitation the rights

     9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

    10  * copies of the Software, and to permit persons to whom the Software is

    11  * furnished to do so, subject to the following conditions:

    12  *

    13  * The above copyright notice and this permission notice shall be included in

    14  * all copies or substantial portions of the Software.

    15  *

    16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

    17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

    18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

    19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

    20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

    21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

    22  * THE SOFTWARE.

    23  */

    24 #include "qemu-common.h"

    25 

    26 void *get_mmap_addr(unsigned long size)

    27 {

    28     return NULL;

    29 }

    30 

    31 void qemu_free(void *ptr)

    32 {

    33     free(ptr);

    34 }

    35 

    36 void *qemu_malloc(size_t size)

    37 {

    38     return malloc(size);

    39 }

    40 

    41 void *qemu_realloc(void *ptr, size_t size)

    42 {

    43     return realloc(ptr, size);

    44 }

    45 

    46 void *qemu_mallocz(size_t size)

    47 {

    48     void *ptr;

    49     ptr = qemu_malloc(size);

    50     if (!ptr)

    51         return NULL;

    52     memset(ptr, 0, size);

    53     return ptr;

    54 }

    55 

    56 char *qemu_strdup(const char *str)

    57 {

    58     char *ptr;

    59     size_t len = strlen(str);

    60     ptr = qemu_malloc(len + 1);

    61     if (!ptr)

    62         return NULL;

    63     memcpy(ptr, str, len + 1);

    64     return ptr;

    65 }

    66 

    67 char *qemu_strndup(const char *str, size_t size)

    68 {

    69     const char *end = memchr(str, 0, size);

    70     char *new;

    71 

    72     if (end)

    73         size = end - str;

    74 

    75     new = qemu_malloc(size + 1);

    76     new[size] = 0;

    77 

    78     return memcpy(new, str, size);

    79 }