Tamura Mizuki / STM32F746_FFT

fft

Dependencies:   BSP_DISCO_F746NG SDFileSystem_Warning_Fixed

mbed_src_STM32F7/api/CThunk.h@0:3e46577dc273, 2016-10-09 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Oct 09 10:11:14 2016 +0000
Revision:
0:3e46577dc273
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:3e46577dc273 1 /* General C++ Object Thunking class
MikamiUitOpen 0:3e46577dc273 2 *
MikamiUitOpen 0:3e46577dc273 3 * - allows direct callbacks to non-static C++ class functions
MikamiUitOpen 0:3e46577dc273 4 * - keeps track for the corresponding class instance
MikamiUitOpen 0:3e46577dc273 5 * - supports an optional context parameter for the called function
MikamiUitOpen 0:3e46577dc273 6 * - ideally suited for class object receiving interrupts (NVIC_SetVector)
MikamiUitOpen 0:3e46577dc273 7 *
MikamiUitOpen 0:3e46577dc273 8 * Copyright (c) 2014-2015 ARM Limited
MikamiUitOpen 0:3e46577dc273 9 *
MikamiUitOpen 0:3e46577dc273 10 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 0:3e46577dc273 11 * you may not use this file except in compliance with the License.
MikamiUitOpen 0:3e46577dc273 12 * You may obtain a copy of the License at
MikamiUitOpen 0:3e46577dc273 13 *
MikamiUitOpen 0:3e46577dc273 14 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 0:3e46577dc273 15 *
MikamiUitOpen 0:3e46577dc273 16 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 0:3e46577dc273 17 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 0:3e46577dc273 18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 0:3e46577dc273 19 * See the License for the specific language governing permissions and
MikamiUitOpen 0:3e46577dc273 20 * limitations under the License.
MikamiUitOpen 0:3e46577dc273 21 */
MikamiUitOpen 0:3e46577dc273 22 #ifndef __CTHUNK_H__
MikamiUitOpen 0:3e46577dc273 23 #define __CTHUNK_H__
MikamiUitOpen 0:3e46577dc273 24
MikamiUitOpen 0:3e46577dc273 25 #define CTHUNK_ADDRESS 1
MikamiUitOpen 0:3e46577dc273 26
MikamiUitOpen 0:3e46577dc273 27 #if (defined(__CORTEX_M3) || defined(__CORTEX_M4) || defined(__thumb2__)) && ! defined(__CORTEX_A9)
MikamiUitOpen 0:3e46577dc273 28 #define CTHUNK_VARIABLES volatile uint32_t code[1]
MikamiUitOpen 0:3e46577dc273 29 /**
MikamiUitOpen 0:3e46577dc273 30 * CTHUNK disassembly for Cortex-M3/M4 (thumb2):
MikamiUitOpen 0:3e46577dc273 31 * * ldm.w pc,{r0,r1,r2,pc}
MikamiUitOpen 0:3e46577dc273 32 *
MikamiUitOpen 0:3e46577dc273 33 * This instruction loads the arguments for the static thunking function to r0-r2, and
MikamiUitOpen 0:3e46577dc273 34 * branches to that function by loading its address into PC.
MikamiUitOpen 0:3e46577dc273 35 *
MikamiUitOpen 0:3e46577dc273 36 * This is safe for both regular calling and interrupt calling, since it only touches scratch registers
MikamiUitOpen 0:3e46577dc273 37 * which should be saved by the caller, and are automatically saved as part of the IRQ context switch.
MikamiUitOpen 0:3e46577dc273 38 */
MikamiUitOpen 0:3e46577dc273 39 #define CTHUNK_ASSIGMENT m_thunk.code[0] = 0x8007E89F
MikamiUitOpen 0:3e46577dc273 40
MikamiUitOpen 0:3e46577dc273 41 #elif defined(__CORTEX_M0PLUS) || defined(__CORTEX_M0) || defined(__CORTEX_A9)
MikamiUitOpen 0:3e46577dc273 42 /*
MikamiUitOpen 0:3e46577dc273 43 * CTHUNK disassembly for Cortex M0 (thumb):
MikamiUitOpen 0:3e46577dc273 44 * * push {r0,r1,r2,r3,r4,lr} save touched registers and return address
MikamiUitOpen 0:3e46577dc273 45 * * movs r4,#4 set up address to load arguments from (immediately following this code block) (1)
MikamiUitOpen 0:3e46577dc273 46 * * add r4,pc set up address to load arguments from (immediately following this code block) (2)
MikamiUitOpen 0:3e46577dc273 47 * * ldm r4!,{r0,r1,r2,r3} load arguments for static thunk function
MikamiUitOpen 0:3e46577dc273 48 * * blx r3 call static thunk function
MikamiUitOpen 0:3e46577dc273 49 * * pop {r0,r1,r2,r3,r4,pc} restore scratch registers and return from function
MikamiUitOpen 0:3e46577dc273 50 */
MikamiUitOpen 0:3e46577dc273 51 #define CTHUNK_VARIABLES volatile uint32_t code[3]
MikamiUitOpen 0:3e46577dc273 52 #define CTHUNK_ASSIGMENT do { \
MikamiUitOpen 0:3e46577dc273 53 m_thunk.code[0] = 0x2404B51F; \
MikamiUitOpen 0:3e46577dc273 54 m_thunk.code[1] = 0xCC0F447C; \
MikamiUitOpen 0:3e46577dc273 55 m_thunk.code[2] = 0xBD1F4798; \
MikamiUitOpen 0:3e46577dc273 56 } while (0)
MikamiUitOpen 0:3e46577dc273 57
MikamiUitOpen 0:3e46577dc273 58 #else
MikamiUitOpen 0:3e46577dc273 59 #error "Target is not currently suported."
MikamiUitOpen 0:3e46577dc273 60 #endif
MikamiUitOpen 0:3e46577dc273 61
MikamiUitOpen 0:3e46577dc273 62 /* IRQ/Exception compatible thunk entry function */
MikamiUitOpen 0:3e46577dc273 63 typedef void (*CThunkEntry)(void);
MikamiUitOpen 0:3e46577dc273 64
MikamiUitOpen 0:3e46577dc273 65 template<class T>
MikamiUitOpen 0:3e46577dc273 66 class CThunk
MikamiUitOpen 0:3e46577dc273 67 {
MikamiUitOpen 0:3e46577dc273 68 public:
MikamiUitOpen 0:3e46577dc273 69 typedef void (T::*CCallbackSimple)(void);
MikamiUitOpen 0:3e46577dc273 70 typedef void (T::*CCallback)(void* context);
MikamiUitOpen 0:3e46577dc273 71
MikamiUitOpen 0:3e46577dc273 72 inline CThunk(T *instance)
MikamiUitOpen 0:3e46577dc273 73 {
MikamiUitOpen 0:3e46577dc273 74 init(instance, NULL, NULL);
MikamiUitOpen 0:3e46577dc273 75 }
MikamiUitOpen 0:3e46577dc273 76
MikamiUitOpen 0:3e46577dc273 77 inline CThunk(T *instance, CCallback callback)
MikamiUitOpen 0:3e46577dc273 78 {
MikamiUitOpen 0:3e46577dc273 79 init(instance, callback, NULL);
MikamiUitOpen 0:3e46577dc273 80 }
MikamiUitOpen 0:3e46577dc273 81
MikamiUitOpen 0:3e46577dc273 82 ~CThunk() {
MikamiUitOpen 0:3e46577dc273 83
MikamiUitOpen 0:3e46577dc273 84 }
MikamiUitOpen 0:3e46577dc273 85
MikamiUitOpen 0:3e46577dc273 86 inline CThunk(T *instance, CCallbackSimple callback)
MikamiUitOpen 0:3e46577dc273 87 {
MikamiUitOpen 0:3e46577dc273 88 init(instance, (CCallback)callback, NULL);
MikamiUitOpen 0:3e46577dc273 89 }
MikamiUitOpen 0:3e46577dc273 90
MikamiUitOpen 0:3e46577dc273 91 inline CThunk(T &instance, CCallback callback)
MikamiUitOpen 0:3e46577dc273 92 {
MikamiUitOpen 0:3e46577dc273 93 init(instance, callback, NULL);
MikamiUitOpen 0:3e46577dc273 94 }
MikamiUitOpen 0:3e46577dc273 95
MikamiUitOpen 0:3e46577dc273 96 inline CThunk(T &instance, CCallbackSimple callback)
MikamiUitOpen 0:3e46577dc273 97 {
MikamiUitOpen 0:3e46577dc273 98 init(instance, (CCallback)callback, NULL);
MikamiUitOpen 0:3e46577dc273 99 }
MikamiUitOpen 0:3e46577dc273 100
MikamiUitOpen 0:3e46577dc273 101 inline CThunk(T &instance, CCallback callback, void* context)
MikamiUitOpen 0:3e46577dc273 102 {
MikamiUitOpen 0:3e46577dc273 103 init(instance, callback, context);
MikamiUitOpen 0:3e46577dc273 104 }
MikamiUitOpen 0:3e46577dc273 105
MikamiUitOpen 0:3e46577dc273 106 inline void callback(CCallback callback)
MikamiUitOpen 0:3e46577dc273 107 {
MikamiUitOpen 0:3e46577dc273 108 m_callback = callback;
MikamiUitOpen 0:3e46577dc273 109 }
MikamiUitOpen 0:3e46577dc273 110
MikamiUitOpen 0:3e46577dc273 111 inline void callback(CCallbackSimple callback)
MikamiUitOpen 0:3e46577dc273 112 {
MikamiUitOpen 0:3e46577dc273 113 m_callback = (CCallback)callback;
MikamiUitOpen 0:3e46577dc273 114 }
MikamiUitOpen 0:3e46577dc273 115
MikamiUitOpen 0:3e46577dc273 116 inline void context(void* context)
MikamiUitOpen 0:3e46577dc273 117 {
MikamiUitOpen 0:3e46577dc273 118 m_thunk.context = (uint32_t)context;
MikamiUitOpen 0:3e46577dc273 119 }
MikamiUitOpen 0:3e46577dc273 120
MikamiUitOpen 0:3e46577dc273 121 inline void context(uint32_t context)
MikamiUitOpen 0:3e46577dc273 122 {
MikamiUitOpen 0:3e46577dc273 123 m_thunk.context = context;
MikamiUitOpen 0:3e46577dc273 124 }
MikamiUitOpen 0:3e46577dc273 125
MikamiUitOpen 0:3e46577dc273 126 inline uint32_t entry(void)
MikamiUitOpen 0:3e46577dc273 127 {
MikamiUitOpen 0:3e46577dc273 128 return (((uint32_t)&m_thunk)|CTHUNK_ADDRESS);
MikamiUitOpen 0:3e46577dc273 129 }
MikamiUitOpen 0:3e46577dc273 130
MikamiUitOpen 0:3e46577dc273 131 /* get thunk entry point for connecting rhunk to an IRQ table */
MikamiUitOpen 0:3e46577dc273 132 inline operator CThunkEntry(void)
MikamiUitOpen 0:3e46577dc273 133 {
MikamiUitOpen 0:3e46577dc273 134 return (CThunkEntry)entry();
MikamiUitOpen 0:3e46577dc273 135 }
MikamiUitOpen 0:3e46577dc273 136
MikamiUitOpen 0:3e46577dc273 137 /* get thunk entry point for connecting rhunk to an IRQ table */
MikamiUitOpen 0:3e46577dc273 138 inline operator uint32_t(void)
MikamiUitOpen 0:3e46577dc273 139 {
MikamiUitOpen 0:3e46577dc273 140 return entry();
MikamiUitOpen 0:3e46577dc273 141 }
MikamiUitOpen 0:3e46577dc273 142
MikamiUitOpen 0:3e46577dc273 143 /* simple test function */
MikamiUitOpen 0:3e46577dc273 144 inline void call(void)
MikamiUitOpen 0:3e46577dc273 145 {
MikamiUitOpen 0:3e46577dc273 146 (((CThunkEntry)(entry()))());
MikamiUitOpen 0:3e46577dc273 147 }
MikamiUitOpen 0:3e46577dc273 148
MikamiUitOpen 0:3e46577dc273 149 private:
MikamiUitOpen 0:3e46577dc273 150 T* m_instance;
MikamiUitOpen 0:3e46577dc273 151 volatile CCallback m_callback;
MikamiUitOpen 0:3e46577dc273 152
MikamiUitOpen 0:3e46577dc273 153 // TODO: this needs proper fix, to refactor toolchain header file and all its use
MikamiUitOpen 0:3e46577dc273 154 // PACKED there is not defined properly for IAR
MikamiUitOpen 0:3e46577dc273 155 #if defined (__ICCARM__)
MikamiUitOpen 0:3e46577dc273 156 typedef __packed struct
MikamiUitOpen 0:3e46577dc273 157 {
MikamiUitOpen 0:3e46577dc273 158 CTHUNK_VARIABLES;
MikamiUitOpen 0:3e46577dc273 159 volatile uint32_t instance;
MikamiUitOpen 0:3e46577dc273 160 volatile uint32_t context;
MikamiUitOpen 0:3e46577dc273 161 volatile uint32_t callback;
MikamiUitOpen 0:3e46577dc273 162 volatile uint32_t trampoline;
MikamiUitOpen 0:3e46577dc273 163 } CThunkTrampoline;
MikamiUitOpen 0:3e46577dc273 164 #else
MikamiUitOpen 0:3e46577dc273 165 typedef struct
MikamiUitOpen 0:3e46577dc273 166 {
MikamiUitOpen 0:3e46577dc273 167 CTHUNK_VARIABLES;
MikamiUitOpen 0:3e46577dc273 168 volatile uint32_t instance;
MikamiUitOpen 0:3e46577dc273 169 volatile uint32_t context;
MikamiUitOpen 0:3e46577dc273 170 volatile uint32_t callback;
MikamiUitOpen 0:3e46577dc273 171 volatile uint32_t trampoline;
MikamiUitOpen 0:3e46577dc273 172 } __attribute__((__packed__)) CThunkTrampoline;
MikamiUitOpen 0:3e46577dc273 173 #endif
MikamiUitOpen 0:3e46577dc273 174
MikamiUitOpen 0:3e46577dc273 175 static void trampoline(T* instance, void* context, CCallback* callback)
MikamiUitOpen 0:3e46577dc273 176 {
MikamiUitOpen 0:3e46577dc273 177 if(instance && *callback) {
MikamiUitOpen 0:3e46577dc273 178 (static_cast<T*>(instance)->**callback)(context);
MikamiUitOpen 0:3e46577dc273 179 }
MikamiUitOpen 0:3e46577dc273 180 }
MikamiUitOpen 0:3e46577dc273 181
MikamiUitOpen 0:3e46577dc273 182 volatile CThunkTrampoline m_thunk;
MikamiUitOpen 0:3e46577dc273 183
MikamiUitOpen 0:3e46577dc273 184 inline void init(T *instance, CCallback callback, void* context)
MikamiUitOpen 0:3e46577dc273 185 {
MikamiUitOpen 0:3e46577dc273 186 /* remember callback - need to add this level of redirection
MikamiUitOpen 0:3e46577dc273 187 as pointer size for member functions differs between platforms */
MikamiUitOpen 0:3e46577dc273 188 m_callback = callback;
MikamiUitOpen 0:3e46577dc273 189
MikamiUitOpen 0:3e46577dc273 190 /* populate thunking trampoline */
MikamiUitOpen 0:3e46577dc273 191 CTHUNK_ASSIGMENT;
MikamiUitOpen 0:3e46577dc273 192 m_thunk.context = (uint32_t)context;
MikamiUitOpen 0:3e46577dc273 193 m_thunk.instance = (uint32_t)instance;
MikamiUitOpen 0:3e46577dc273 194 m_thunk.callback = (uint32_t)&m_callback;
MikamiUitOpen 0:3e46577dc273 195 m_thunk.trampoline = (uint32_t)&trampoline;
MikamiUitOpen 0:3e46577dc273 196
MikamiUitOpen 0:3e46577dc273 197 #if defined(__CORTEX_A9)
MikamiUitOpen 0:3e46577dc273 198 /* Data cache clean */
MikamiUitOpen 0:3e46577dc273 199 /* Cache control */
MikamiUitOpen 0:3e46577dc273 200 {
MikamiUitOpen 0:3e46577dc273 201 uint32_t start_addr = (uint32_t)&m_thunk & 0xFFFFFFE0;
MikamiUitOpen 0:3e46577dc273 202 uint32_t end_addr = (uint32_t)&m_thunk + sizeof(m_thunk);
MikamiUitOpen 0:3e46577dc273 203 uint32_t addr;
MikamiUitOpen 0:3e46577dc273 204
MikamiUitOpen 0:3e46577dc273 205 /* Data cache clean and invalid */
MikamiUitOpen 0:3e46577dc273 206 for (addr = start_addr; addr < end_addr; addr += 0x20) {
MikamiUitOpen 0:3e46577dc273 207 __v7_clean_inv_dcache_mva((void *)addr);
MikamiUitOpen 0:3e46577dc273 208 }
MikamiUitOpen 0:3e46577dc273 209 /* Instruction cache invalid */
MikamiUitOpen 0:3e46577dc273 210 __v7_inv_icache_all();
MikamiUitOpen 0:3e46577dc273 211 __ca9u_inv_tlb_all();
MikamiUitOpen 0:3e46577dc273 212 __v7_inv_btac();
MikamiUitOpen 0:3e46577dc273 213 }
MikamiUitOpen 0:3e46577dc273 214 #endif
MikamiUitOpen 0:3e46577dc273 215 __ISB();
MikamiUitOpen 0:3e46577dc273 216 __DSB();
MikamiUitOpen 0:3e46577dc273 217 }
MikamiUitOpen 0:3e46577dc273 218 };
MikamiUitOpen 0:3e46577dc273 219
MikamiUitOpen 0:3e46577dc273 220 #endif/*__CTHUNK_H__*/