1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/*
ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio.
This file is part of ChibiOS.
ChibiOS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file chmemcore.h
* @brief Core memory manager macros and structures.
*
* @addtogroup memcore
* @{
*/
#ifndef CHMEMCORE_H
#define CHMEMCORE_H
#if !defined(CH_CFG_USE_MEMCORE)
#define CH_CFG_USE_MEMCORE FALSE
#endif
#if (CH_CFG_USE_MEMCORE == TRUE) || defined(__DOXYGEN__)
/*===========================================================================*/
/* Module constants. */
/*===========================================================================*/
/*===========================================================================*/
/* Module pre-compile time settings. */
/*===========================================================================*/
/**
* @brief Managed RAM size.
* @details Size of the RAM area to be managed by the OS. If set to zero
* then the whole available RAM is used. The core memory is made
* available to the heap allocator and/or can be used directly through
* the simplified core memory allocator.
*
* @note In order to let the OS manage the whole RAM the linker script must
* provide the @p __heap_base__ and @p __heap_end__ symbols.
* @note Requires @p CH_CFG_USE_MEMCORE.
*/
#if !defined(CH_CFG_MEMCORE_SIZE) || defined(__DOXYGEN__)
#define CH_CFG_MEMCORE_SIZE 0
#endif
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
#if CH_CFG_MEMCORE_SIZE < 0
#error "invalid CH_CFG_MEMCORE_SIZE value specified"
#endif
/*===========================================================================*/
/* Module data structures and types. */
/*===========================================================================*/
/**
* @brief Memory get function.
*/
typedef void *(*memgetfunc_t)(size_t size, unsigned align);
/**
* @brief Enhanced memory get function.
*/
typedef void *(*memgetfunc2_t)(size_t size, unsigned align, size_t offset);
/**
* @brief Type of memory core object.
*/
typedef struct {
/**
* @brief Next free address.
*/
uint8_t *nextmem;
/**
* @brief Final address.
*/
uint8_t *endmem;
} memcore_t;
/*===========================================================================*/
/* Module macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#if !defined(__DOXYGEN__)
extern memcore_t ch_memcore;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void _core_init(void);
void *chCoreAllocAlignedWithOffsetI(size_t size,
unsigned align,
size_t offset);
void *chCoreAllocAlignedWithOffset(size_t size,
unsigned align,
size_t offset);
size_t chCoreGetStatusX(void);
#ifdef __cplusplus
}
#endif
/*===========================================================================*/
/* Module inline functions. */
/*===========================================================================*/
/**
* @brief Allocates a memory block.
* @details The allocated block is guaranteed to be properly aligned to the
* specified alignment.
*
* @param[in] size the size of the block to be allocated.
* @param[in] align desired memory alignment
* @return A pointer to the allocated memory block.
* @retval NULL allocation failed, core memory exhausted.
*
* @iclass
*/
static inline void *chCoreAllocAlignedI(size_t size, unsigned align) {
return chCoreAllocAlignedWithOffsetI(size, align, 0U);
}
/**
* @brief Allocates a memory block.
* @details The allocated block is guaranteed to be properly aligned to the
* specified alignment.
*
* @param[in] size the size of the block to be allocated
* @param[in] align desired memory alignment
* @return A pointer to the allocated memory block.
* @retval NULL allocation failed, core memory exhausted.
*
* @api
*/
static inline void *chCoreAllocAligned(size_t size, unsigned align) {
void *p;
chSysLock();
p = chCoreAllocAlignedWithOffsetI(size, align, 0U);
chSysUnlock();
return p;
}
/**
* @brief Allocates a memory block.
* @details The allocated block is guaranteed to be properly aligned for a
* pointer data type.
*
* @param[in] size the size of the block to be allocated.
* @return A pointer to the allocated memory block.
* @retval NULL allocation failed, core memory exhausted.
*
* @iclass
*/
static inline void *chCoreAllocI(size_t size) {
return chCoreAllocAlignedWithOffsetI(size, PORT_NATURAL_ALIGN, 0U);
}
/**
* @brief Allocates a memory block.
* @details The allocated block is guaranteed to be properly aligned for a
* pointer data type.
*
* @param[in] size the size of the block to be allocated.
* @return A pointer to the allocated memory block.
* @retval NULL allocation failed, core memory exhausted.
*
* @api
*/
static inline void *chCoreAlloc(size_t size) {
return chCoreAllocAlignedWithOffset(size, PORT_NATURAL_ALIGN, 0U);
}
#endif /* CH_CFG_USE_MEMCORE == TRUE */
#endif /* CHMEMCORE_H */
/** @} */
|
