David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 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 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 27 | void qemu_free(void *ptr) |
| 28 | { |
David 'Digit' Turner | 488bfd5 | 2011-05-09 17:08:24 +0200 | [diff] [blame] | 29 | //trace_qemu_free(ptr); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 30 | free(ptr); |
| 31 | } |
| 32 | |
David 'Digit' Turner | 2910f18 | 2010-05-10 18:48:35 -0700 | [diff] [blame] | 33 | static int allow_zero_malloc(void) |
| 34 | { |
| 35 | #if defined(CONFIG_ZERO_MALLOC) |
| 36 | return 1; |
| 37 | #else |
| 38 | return 0; |
| 39 | #endif |
| 40 | } |
| 41 | |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 42 | void *qemu_malloc(size_t size) |
| 43 | { |
David 'Digit' Turner | 488bfd5 | 2011-05-09 17:08:24 +0200 | [diff] [blame] | 44 | void *ptr; |
David 'Digit' Turner | 2910f18 | 2010-05-10 18:48:35 -0700 | [diff] [blame] | 45 | if (!size && !allow_zero_malloc()) { |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 46 | abort(); |
| 47 | } |
David 'Digit' Turner | 488bfd5 | 2011-05-09 17:08:24 +0200 | [diff] [blame] | 48 | ptr = qemu_oom_check(malloc(size ? size : 1)); |
| 49 | //trace_qemu_malloc(size, ptr); |
| 50 | return ptr; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 51 | } |
| 52 | |
| 53 | void *qemu_realloc(void *ptr, size_t size) |
| 54 | { |
David 'Digit' Turner | 488bfd5 | 2011-05-09 17:08:24 +0200 | [diff] [blame] | 55 | void *newptr; |
David Turner | d7e3529 | 2010-09-10 00:26:54 +0200 | [diff] [blame] | 56 | if (!size && !allow_zero_malloc()) { |
| 57 | abort(); |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 58 | } |
David 'Digit' Turner | 488bfd5 | 2011-05-09 17:08:24 +0200 | [diff] [blame] | 59 | newptr = qemu_oom_check(realloc(ptr, size ? size : 1)); |
| 60 | //trace_qemu_realloc(ptr, size, newptr); |
| 61 | return newptr; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | void *qemu_mallocz(size_t size) |
| 65 | { |
David 'Digit' Turner | 488bfd5 | 2011-05-09 17:08:24 +0200 | [diff] [blame] | 66 | void *ptr; |
David Turner | d7e3529 | 2010-09-10 00:26:54 +0200 | [diff] [blame] | 67 | if (!size && !allow_zero_malloc()) { |
| 68 | abort(); |
| 69 | } |
David 'Digit' Turner | 488bfd5 | 2011-05-09 17:08:24 +0200 | [diff] [blame] | 70 | ptr = qemu_oom_check(calloc(1, size ? size : 1)); |
| 71 | //trace_qemu_malloc(size, ptr); |
| 72 | return ptr; |
David 'Digit' Turner | 5d8f37a | 2009-09-14 14:32:27 -0700 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | char *qemu_strdup(const char *str) |
| 76 | { |
| 77 | char *ptr; |
| 78 | size_t len = strlen(str); |
| 79 | ptr = qemu_malloc(len + 1); |
| 80 | memcpy(ptr, str, len + 1); |
| 81 | return ptr; |
| 82 | } |
| 83 | |
| 84 | char *qemu_strndup(const char *str, size_t size) |
| 85 | { |
| 86 | const char *end = memchr(str, 0, size); |
| 87 | char *new; |
| 88 | |
| 89 | if (end) { |
| 90 | size = end - str; |
| 91 | } |
| 92 | |
| 93 | new = qemu_malloc(size + 1); |
| 94 | new[size] = 0; |
| 95 | |
| 96 | return memcpy(new, str, size); |
| 97 | } |