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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 | ||
27 | static void *oom_check(void *ptr) | |
28 | { | |
29 | if (ptr == NULL) { | |
30 | abort(); | |
31 | } | |
32 | return ptr; | |
33 | } | |
34 | ||
35 | void *get_mmap_addr(unsigned long size) | |
36 | { | |
37 | return NULL; | |
38 | } | |
39 | ||
40 | void qemu_free(void *ptr) | |
41 | { | |
42 | free(ptr); | |
43 | } | |
44 | ||
45 | void *qemu_malloc(size_t size) | |
46 | { | |
47 | if (!size) { | |
48 | abort(); | |
49 | } | |
50 | return oom_check(malloc(size)); | |
51 | } | |
52 | ||
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 | ||
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 | ||
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 | ||
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 | } |