1 /*
2 * Copyright (c) 2009-2022 Huawei Technologies Co., Ltd. All rights reserved.
3 *
4 * UniProton is licensed under Mulan PSL v2.
5 * You can use this software according to the terms and conditions of the Mulan PSL v2.
6 * You may obtain a copy of Mulan PSL v2 at:
7 * http://license.coscl.org.cn/MulanPSL2
8 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
9 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
10 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
11 * See the Mulan PSL v2 for more details.
12 * Create: 2009-01-20
13 * Description: 内存基本功能的内部头文件。
14 */
15 #ifndef PRT_MEM_EXTERNAL_H
16 #define PRT_MEM_EXTERNAL_H
17
18 #include "prt_mem.h"
19 #include "prt_err_external.h"
20 #include "prt_hook_external.h"
21
22 #define OS_MEM_HEAD_MAGICWORD 0xABAB /* 内存块的块控制头魔术字，确保为奇数 */
23
24 #define OS_MAX_PT_NUM 253
25
26 #define OS_MEM_ALIGN_CHECK(value) ((value) & 0x3UL)
27
28 #define OS_FSC_MEM_MAGIC_USED (struct TagFscMemCtrl *)0x5a5aa5a5
29 #define OS_FSC_MEM_LAST_IDX 16
30 #define OS_FSC_MEM_USED_HEAD_SIZE (sizeof(struct TagFscMemCtrl))
31 #define OS_FSC_MEM_TAIL_SIZE (sizeof(U32))
32
33 #define OS_FSC_MEM_SZGET(currBlk) ((U32)(currBlk->size))
34 #define OS_FSC_MEM_MAXVAL ((1U << OS_FSC_MEM_LAST_IDX) - OS_FSC_MEM_SIZE_ALIGN)
35
36 #define OS_FSC_MEM_TAIL_MAGIC 0xABCDDCBA
37
38 /* FSC算法块控制头结构，注意各成员顺序是和其他算法保持一致偏移的，不能随便改动，保持ptNo和其他算法偏移一致 */
39 struct TagFscMemCtrl {
40 struct TagFscMemCtrl *next;
41 // 块大小
42 uintptr_t size;
43 // 若前面相邻的物理块空闲，则此字段记录前面空闲块大小，否则为OS_FSC_MEM_PREV_USED
44 uintptr_t prevSize;
45 // 空闲时为上一个控制块地址
46 struct TagFscMemCtrl *prev;
47 };
48
49 extern void *OsMemAlloc(enum MoudleId mid, U8 ptNo, U32 size);
50 extern void *OsMemAllocAlign(U32 mid, U8 ptNo, U32 size, enum MemAlign alignPow);
51
52 /* 对齐之后，返回地址不一定紧跟在内存头后面，需要设置返回地址与内存头之间的差值 */
OsMemSetHeadAddr(uintptr_t usrAddr,uintptr_t ctrlAddr)53 OS_SEC_ALW_INLINE INLINE void OsMemSetHeadAddr(uintptr_t usrAddr, uintptr_t ctrlAddr)
54 {
55 U16 *headAddr = (U16 *)(usrAddr) - 1;
56
57 *headAddr = (U16)(usrAddr - ctrlAddr);
58 return;
59 }
OsMemGetHeadAddr(uintptr_t usrAddr)60 OS_SEC_ALW_INLINE INLINE void *OsMemGetHeadAddr(uintptr_t usrAddr)
61 {
62 U16 headOffset = *((U16 *)usrAddr - 1);
63
64 return (void *)(uintptr_t)((usrAddr - (uintptr_t)headOffset) - sizeof(struct TagFscMemCtrl));
65 }
OsMemSetHookAddr(uintptr_t addrress)66 OS_SEC_ALW_INLINE INLINE uintptr_t OsMemSetHookAddr(uintptr_t addrress)
67 {
68 return LOG_ADDR_DBG(addrress);
69 }
70
71 #endif /* PRT_MEM_EXTERNAL_H */
72