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 #include <stdlib.h>
26
oom_check(void * ptr)27 static void *oom_check(void *ptr)
28 {
29 if (ptr == NULL) {
30 abort();
31 }
32 return ptr;
33 }
34
get_mmap_addr(unsigned long size)35 void *get_mmap_addr(unsigned long size)
36 {
37 return NULL;
38 }
39
qemu_free(void * ptr)40 void qemu_free(void *ptr)
41 {
42 free(ptr);
43 }
44
qemu_malloc(size_t size)45 void *qemu_malloc(size_t size)
46 {
47 if (!size) {
48 abort();
49 }
50 return oom_check(malloc(size));
51 }
52
qemu_realloc(void * ptr,size_t size)53 void *qemu_realloc(void *ptr, size_t size)
54 {
55 if (size) {
56 return oom_check(realloc(ptr, size));
57 } else {
58 if (ptr) {
59 return realloc(ptr, size);
60 }
61 }
62 abort();
63 }
64
qemu_mallocz(size_t size)65 void *qemu_mallocz(size_t size)
66 {
67 void *ptr;
68 ptr = qemu_malloc(size);
69 memset(ptr, 0, size);
70 return ptr;
71 }
72
qemu_strdup(const char * str)73 char *qemu_strdup(const char *str)
74 {
75 char *ptr;
76 size_t len = strlen(str);
77 ptr = qemu_malloc(len + 1);
78 memcpy(ptr, str, len + 1);
79 return ptr;
80 }
81
qemu_strndup(const char * str,size_t size)82 char *qemu_strndup(const char *str, size_t size)
83 {
84 const char *end = memchr(str, 0, size);
85 char *new;
86
87 if (end) {
88 size = end - str;
89 }
90
91 new = qemu_malloc(size + 1);
92 new[size] = 0;
93
94 return memcpy(new, str, size);
95 }
96