blob: 295d1856efa235ef6a08e2bee43f016aa77406a6 [file] [log] [blame]
pbrook17e23772008-06-09 13:47:45 +00001/*
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"
aliguori8a1d02a2009-02-05 22:05:49 +000025#include <stdlib.h>
26
27static void *oom_check(void *ptr)
28{
malc26d64a82009-05-19 22:28:26 +040029 if (ptr == NULL) {
aliguori62a3fe22009-02-06 00:19:42 +000030 abort();
malc26d64a82009-05-19 22:28:26 +040031 }
aliguori8a1d02a2009-02-05 22:05:49 +000032 return ptr;
33}
pbrook17e23772008-06-09 13:47:45 +000034
35void *get_mmap_addr(unsigned long size)
36{
37 return NULL;
38}
39
40void qemu_free(void *ptr)
41{
42 free(ptr);
43}
44
45void *qemu_malloc(size_t size)
46{
malc26d64a82009-05-19 22:28:26 +040047 if (!size) {
malca7d27b52009-05-19 22:26:42 +040048 abort();
malc26d64a82009-05-19 22:28:26 +040049 }
aliguori8a1d02a2009-02-05 22:05:49 +000050 return oom_check(malloc(size));
pbrook17e23772008-06-09 13:47:45 +000051}
52
ths2137b4c2008-08-06 08:37:17 +000053void *qemu_realloc(void *ptr, size_t size)
54{
malc26d64a82009-05-19 22:28:26 +040055 if (size) {
aliguori322691a2009-02-11 21:00:32 +000056 return oom_check(realloc(ptr, size));
malc26d64a82009-05-19 22:28:26 +040057 } else {
58 if (ptr) {
malca7d27b52009-05-19 22:26:42 +040059 return realloc(ptr, size);
malc26d64a82009-05-19 22:28:26 +040060 }
malca7d27b52009-05-19 22:26:42 +040061 }
62 abort();
ths2137b4c2008-08-06 08:37:17 +000063}
64
pbrook17e23772008-06-09 13:47:45 +000065void *qemu_mallocz(size_t size)
66{
67 void *ptr;
68 ptr = qemu_malloc(size);
pbrook17e23772008-06-09 13:47:45 +000069 memset(ptr, 0, size);
70 return ptr;
71}
72
73char *qemu_strdup(const char *str)
74{
75 char *ptr;
blueswir1363a37d2008-08-21 17:58:08 +000076 size_t len = strlen(str);
77 ptr = qemu_malloc(len + 1);
balrogac4b0d02008-11-09 00:28:40 +000078 memcpy(ptr, str, len + 1);
pbrook17e23772008-06-09 13:47:45 +000079 return ptr;
80}
balrogac4b0d02008-11-09 00:28:40 +000081
82char *qemu_strndup(const char *str, size_t size)
83{
84 const char *end = memchr(str, 0, size);
85 char *new;
86
malc26d64a82009-05-19 22:28:26 +040087 if (end) {
balrogac4b0d02008-11-09 00:28:40 +000088 size = end - str;
malc26d64a82009-05-19 22:28:26 +040089 }
balrogac4b0d02008-11-09 00:28:40 +000090
91 new = qemu_malloc(size + 1);
92 new[size] = 0;
93
94 return memcpy(new, str, size);
95}