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annotate Small_CPU/Src/startup_stm32f4xx.S @ 866:3a1c533f3840
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| author | heinrichsweikamp |
|---|---|
| date | Mon, 22 Jul 2024 16:40:14 +0200 |
| parents | 22864a24973b |
| children |
| rev | line source |
|---|---|
| 38 | 1 /* File: startup_ARMCM4.S |
| 2 * Purpose: startup file for Cortex-M4 devices. Should use with | |
| 3 * GCC for ARM Embedded Processors | |
| 4 * Version: V1.3 | |
| 5 * Date: 08 Feb 2012 | |
| 6 * | |
| 7 * Copyright (c) 2012, ARM Limited | |
| 8 * All rights reserved. | |
| 9 * | |
| 10 * Redistribution and use in source and binary forms, with or without | |
| 11 * modification, are permitted provided that the following conditions are met: | |
| 12 * Redistributions of source code must retain the above copyright | |
| 13 notice, this list of conditions and the following disclaimer. | |
| 14 * Redistributions in binary form must reproduce the above copyright | |
| 15 notice, this list of conditions and the following disclaimer in the | |
| 16 documentation and/or other materials provided with the distribution. | |
| 17 * Neither the name of the ARM Limited nor the | |
| 18 names of its contributors may be used to endorse or promote products | |
| 19 derived from this software without specific prior written permission. | |
| 20 * | |
| 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND | |
| 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 24 * DISCLAIMED. IN NO EVENT SHALL ARM LIMITED BE LIABLE FOR ANY | |
| 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 28 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 */ | |
| 32 .syntax unified | |
| 33 .arch armv7-m | |
| 34 | |
| 35 .section .stack | |
| 36 .align 3 | |
| 37 #ifdef __STACK_SIZE | |
| 38 .equ Stack_Size, __STACK_SIZE | |
| 39 #else | |
| 40 .equ Stack_Size, 0x400 | |
| 41 #endif | |
| 42 .globl __StackTop | |
| 43 .globl __StackLimit | |
| 44 __StackLimit: | |
| 45 .space Stack_Size | |
| 46 .size __StackLimit, . - __StackLimit | |
| 47 __StackTop: | |
| 48 .size __StackTop, . - __StackTop | |
| 49 | |
| 50 .section .heap | |
| 51 .align 3 | |
| 52 #ifdef __HEAP_SIZE | |
| 53 .equ Heap_Size, __HEAP_SIZE | |
| 54 #else | |
| 55 .equ Heap_Size, 0xC00 | |
| 56 #endif | |
| 57 .globl __HeapBase | |
| 58 .globl __HeapLimit | |
| 59 __HeapBase: | |
| 60 .if Heap_Size | |
| 61 .space Heap_Size | |
| 62 .endif | |
| 63 .size __HeapBase, . - __HeapBase | |
| 64 __HeapLimit: | |
| 65 .size __HeapLimit, . - __HeapLimit | |
| 66 | |
| 67 .section .isr_vector | |
| 68 .align 2 | |
| 69 .globl __isr_vector | |
| 70 __isr_vector: | |
| 71 .long __StackTop /* Top of Stack */ | |
| 72 .long Reset_Handler /* Reset Handler */ | |
| 73 .long NMI_Handler /* NMI Handler */ | |
| 74 .long HardFault_Handler /* Hard Fault Handler */ | |
| 75 .long MemManage_Handler /* MPU Fault Handler */ | |
| 76 .long BusFault_Handler /* Bus Fault Handler */ | |
| 77 .long UsageFault_Handler /* Usage Fault Handler */ | |
| 78 .long 0 /* Reserved */ | |
| 79 .long 0 /* Reserved */ | |
| 80 .long 0 /* Reserved */ | |
| 81 .long 0 /* Reserved */ | |
| 82 .long SVC_Handler /* SVCall Handler */ | |
| 83 .long DebugMon_Handler /* Debug Monitor Handler */ | |
| 84 .long 0 /* Reserved */ | |
| 85 .long PendSV_Handler /* PendSV Handler */ | |
| 86 .long SysTick_Handler /* SysTick Handler */ | |
| 87 | |
| 88 // External Interrupts | |
| 89 .long WWDG_IRQHandler // Window WatchDog | |
| 90 .long PVD_IRQHandler // PVD through EXTI Line detection | |
| 91 .long TAMP_STAMP_IRQHandler // Tamper and TimeStamps through the EXTI line | |
| 92 .long RTC_WKUP_IRQHandler // RTC Wakeup through the EXTI line | |
| 93 .long FLASH_IRQHandler // FLASH | |
| 94 .long RCC_IRQHandler // RCC | |
| 95 .long EXTI0_IRQHandler // EXTI Line0 | |
| 96 .long EXTI1_IRQHandler // EXTI Line1 | |
| 97 .long EXTI2_IRQHandler // EXTI Line2 | |
| 98 .long EXTI3_IRQHandler // EXTI Line3 | |
| 99 .long EXTI4_IRQHandler // EXTI Line4 | |
| 100 .long DMA1_Stream0_IRQHandler // DMA1 Stream 0 | |
| 101 .long DMA1_Stream1_IRQHandler // DMA1 Stream 1 | |
| 102 .long DMA1_Stream2_IRQHandler // DMA1 Stream 2 | |
| 103 .long DMA1_Stream3_IRQHandler // DMA1 Stream 3 | |
| 104 .long DMA1_Stream4_IRQHandler // DMA1 Stream 4 | |
| 105 .long DMA1_Stream5_IRQHandler // DMA1 Stream 5 | |
| 106 .long DMA1_Stream6_IRQHandler // DMA1 Stream 6 | |
| 107 .long ADC_IRQHandler // ADC1, ADC2 and ADC3s | |
| 108 .long CAN1_TX_IRQHandler // CAN1 TX | |
| 109 .long CAN1_RX0_IRQHandler // CAN1 RX0 | |
| 110 .long CAN1_RX1_IRQHandler // CAN1 RX1 | |
| 111 .long CAN1_SCE_IRQHandler // CAN1 SCE | |
| 112 .long EXTI9_5_IRQHandler // External Line[9:5]s | |
| 113 .long TIM1_BRK_TIM9_IRQHandler // TIM1 Break and TIM9 | |
| 114 .long TIM1_UP_TIM10_IRQHandler // TIM1 Update and TIM10 | |
| 115 .long TIM1_TRG_COM_TIM11_IRQHandler // TIM1 Trigger and Commutation and TIM11 | |
| 116 .long TIM1_CC_IRQHandler // TIM1 Capture Compare | |
| 117 .long TIM2_IRQHandler // TIM2 | |
| 118 .long TIM3_IRQHandler // TIM3 | |
| 119 .long TIM4_IRQHandler // TIM4 | |
| 120 .long I2C1_EV_IRQHandler // I2C1 Event | |
| 121 .long I2C1_ER_IRQHandler // I2C1 Error | |
| 122 .long I2C2_EV_IRQHandler // I2C2 Event | |
| 123 .long I2C2_ER_IRQHandler // I2C2 Error | |
| 124 .long SPI1_IRQHandler // SPI1 | |
| 125 .long SPI2_IRQHandler // SPI2 | |
| 126 .long USART1_IRQHandler // USART1 | |
| 127 .long USART2_IRQHandler // USART2 | |
| 128 .long USART3_IRQHandler // USART3 | |
| 129 .long EXTI15_10_IRQHandler // External Line[15:10]s | |
| 130 .long RTC_Alarm_IRQHandler // RTC Alarm (A and B) through EXTI Line | |
| 131 .long OTG_FS_WKUP_IRQHandler // USB OTG FS Wakeup through EXTI line | |
| 132 .long TIM8_BRK_TIM12_IRQHandler // TIM8 Break and TIM12 | |
| 133 .long TIM8_UP_TIM13_IRQHandler // TIM8 Update and TIM13 | |
| 134 .long TIM8_TRG_COM_TIM14_IRQHandler // TIM8 Trigger and Commutation and TIM14 | |
| 135 .long TIM8_CC_IRQHandler // TIM8 Capture Compare | |
| 136 .long DMA1_Stream7_IRQHandler // DMA1 Stream7 | |
| 137 .long FSMC_IRQHandler // FSMC | |
| 138 .long SDIO_IRQHandler // SDIO | |
| 139 .long TIM5_IRQHandler // TIM5 | |
| 140 .long SPI3_IRQHandler // SPI3 | |
| 141 .long UART4_IRQHandler // UART4 | |
| 142 .long UART5_IRQHandler // UART5 | |
| 143 .long TIM6_DAC_IRQHandler // TIM6 and DAC1&2 underrun errors | |
| 144 .long TIM7_IRQHandler // TIM7 | |
| 145 .long DMA2_Stream0_IRQHandler // DMA2 Stream 0 | |
| 146 .long DMA2_Stream1_IRQHandler // DMA2 Stream 1 | |
| 147 .long DMA2_Stream2_IRQHandler // DMA2 Stream 2 | |
| 148 .long DMA2_Stream3_IRQHandler // DMA2 Stream 3 | |
| 149 .long DMA2_Stream4_IRQHandler // DMA2 Stream 4 | |
| 150 .long ETH_IRQHandler // Ethernet | |
| 151 .long ETH_WKUP_IRQHandler // Ethernet Wakeup through EXTI line | |
| 152 .long CAN2_TX_IRQHandler // CAN2 TX | |
| 153 .long CAN2_RX0_IRQHandler // CAN2 RX0 | |
| 154 .long CAN2_RX1_IRQHandler // CAN2 RX1 | |
| 155 .long CAN2_SCE_IRQHandler // CAN2 SCE | |
| 156 .long OTG_FS_IRQHandler // USB OTG FS | |
| 157 .long DMA2_Stream5_IRQHandler // DMA2 Stream 5 | |
| 158 .long DMA2_Stream6_IRQHandler // DMA2 Stream 6 | |
| 159 .long DMA2_Stream7_IRQHandler // DMA2 Stream 7 | |
| 160 .long USART6_IRQHandler // USART6 | |
| 161 .long I2C3_EV_IRQHandler // I2C3 event | |
| 162 .long I2C3_ER_IRQHandler // I2C3 error | |
| 163 .long OTG_HS_EP1_OUT_IRQHandler // USB OTG HS End Point 1 Out | |
| 164 .long OTG_HS_EP1_IN_IRQHandler // USB OTG HS End Point 1 In | |
| 165 .long OTG_HS_WKUP_IRQHandler // USB OTG HS Wakeup through EXTI | |
| 166 .long OTG_HS_IRQHandler // USB OTG HS | |
| 167 .long DCMI_IRQHandler // DCMI | |
| 168 .long CRYP_IRQHandler // CRYP crypto | |
| 169 .long HASH_RNG_IRQHandler // Hash and Rng | |
| 170 .long FPU_IRQHandler // FPU | |
| 171 | |
| 172 .size __isr_vector, . - __isr_vector | |
| 173 | |
| 174 .text | |
| 175 .thumb | |
| 176 .thumb_func | |
| 177 .align 2 | |
| 178 .globl Reset_Handler | |
| 179 .type Reset_Handler, %function | |
| 180 Reset_Handler: | |
| 181 /* Loop to copy data from read only memory to RAM. The ranges | |
| 182 * of copy from/to are specified by following symbols evaluated in | |
| 183 * linker script. | |
| 184 * __etext: End of code section, i.e., begin of data sections to copy from. | |
| 185 * __data_start__/__data_end__: RAM address range that data should be | |
| 186 * copied to. Both must be aligned to 4 bytes boundary. */ | |
| 187 | |
|
41
22864a24973b
Non functional change just to use same symbols as CPU1
Ideenmodellierer
parents:
38
diff
changeset
|
188 ldr r1, =_sidata /*__etext*/ |
| 38 | 189 ldr r2, =__data_start__ |
| 190 ldr r3, =__data_end__ | |
| 191 | |
| 192 #if 1 | |
| 193 /* Here are two copies of loop implemenations. First one favors code size | |
| 194 * and the second one favors performance. Default uses the first one. | |
| 195 * Change to "#if 0" to use the second one */ | |
| 196 .flash_to_ram_loop: | |
| 197 cmp r2, r3 | |
| 198 ittt lt | |
| 199 ldrlt r0, [r1], #4 | |
| 200 strlt r0, [r2], #4 | |
| 201 blt .flash_to_ram_loop | |
| 202 #else | |
| 203 subs r3, r2 | |
| 204 ble .flash_to_ram_loop_end | |
| 205 .flash_to_ram_loop: | |
| 206 subs r3, #4 | |
| 207 ldr r0, [r1, r3] | |
| 208 str r0, [r2, r3] | |
| 209 bgt .flash_to_ram_loop | |
| 210 .flash_to_ram_loop_end: | |
| 211 #endif | |
| 212 | |
| 213 #ifndef __NO_SYSTEM_INIT | |
| 214 ldr r0, =SystemInit | |
| 215 blx r0 | |
| 216 #endif | |
| 217 | |
| 218 ldr r0, =_start | |
| 219 bx r0 | |
| 220 .pool | |
| 221 .size Reset_Handler, . - Reset_Handler | |
| 222 | |
| 223 /* Our weak _start alternative if we don't use the library _start | |
| 224 * The zero init section must be cleared, otherwise the librtary is | |
| 225 * doing that */ | |
| 226 .align 1 | |
| 227 .thumb_func | |
| 228 .weak _start | |
| 229 .type _start, %function | |
| 230 _start: | |
| 231 | |
| 232 /* Zero fill the bss segment. */ | |
| 233 ldr r1, = __bss_start__ | |
| 234 ldr r2, = __bss_end__ | |
| 235 movs r3, #0 | |
| 236 b .fill_zero_bss | |
| 237 .loop_zero_bss: | |
| 238 str r3, [r1], #4 | |
| 239 | |
| 240 .fill_zero_bss: | |
| 241 cmp r1, r2 | |
| 242 bcc .loop_zero_bss | |
| 243 | |
| 244 /* Jump to our main */ | |
| 245 bl main | |
| 246 b . | |
| 247 .size _start, . - _start | |
| 248 | |
| 249 /* Macro to define default handlers. Default handler | |
| 250 * will be weak symbol and just dead loops. They can be | |
| 251 * overwritten by other handlers */ | |
| 252 .macro def_irq_handler handler_name | |
| 253 .align 1 | |
| 254 .thumb_func | |
| 255 .weak \handler_name | |
| 256 .type \handler_name, %function | |
| 257 \handler_name : | |
| 258 b . | |
| 259 .size \handler_name, . - \handler_name | |
| 260 .endm | |
| 261 | |
| 262 def_irq_handler NMI_Handler | |
| 263 def_irq_handler HardFault_Handler | |
| 264 def_irq_handler MemManage_Handler | |
| 265 def_irq_handler BusFault_Handler | |
| 266 def_irq_handler UsageFault_Handler | |
| 267 def_irq_handler SVC_Handler | |
| 268 def_irq_handler DebugMon_Handler | |
| 269 def_irq_handler PendSV_Handler | |
| 270 def_irq_handler SysTick_Handler | |
| 271 def_irq_handler Default_Handler | |
| 272 | |
| 273 // External Interrupts | |
| 274 def_irq_handler WWDG_IRQHandler // Window WatchDog | |
| 275 def_irq_handler PVD_IRQHandler // PVD through EXTI Line detection | |
| 276 def_irq_handler TAMP_STAMP_IRQHandler // Tamper and TimeStamps through the EXTI line | |
| 277 def_irq_handler RTC_WKUP_IRQHandler // RTC Wakeup through the EXTI line | |
| 278 def_irq_handler FLASH_IRQHandler // FLASH | |
| 279 def_irq_handler RCC_IRQHandler // RCC | |
| 280 def_irq_handler EXTI0_IRQHandler // EXTI Line0 | |
| 281 def_irq_handler EXTI1_IRQHandler // EXTI Line1 | |
| 282 def_irq_handler EXTI2_IRQHandler // EXTI Line2 | |
| 283 def_irq_handler EXTI3_IRQHandler // EXTI Line3 | |
| 284 def_irq_handler EXTI4_IRQHandler // EXTI Line4 | |
| 285 def_irq_handler DMA1_Stream0_IRQHandler // DMA1 Stream 0 | |
| 286 def_irq_handler DMA1_Stream1_IRQHandler // DMA1 Stream 1 | |
| 287 def_irq_handler DMA1_Stream2_IRQHandler // DMA1 Stream 2 | |
| 288 def_irq_handler DMA1_Stream3_IRQHandler // DMA1 Stream 3 | |
| 289 def_irq_handler DMA1_Stream4_IRQHandler // DMA1 Stream 4 | |
| 290 def_irq_handler DMA1_Stream5_IRQHandler // DMA1 Stream 5 | |
| 291 def_irq_handler DMA1_Stream6_IRQHandler // DMA1 Stream 6 | |
| 292 def_irq_handler ADC_IRQHandler // ADC1, ADC2 and ADC3s | |
| 293 def_irq_handler CAN1_TX_IRQHandler // CAN1 TX | |
| 294 def_irq_handler CAN1_RX0_IRQHandler // CAN1 RX0 | |
| 295 def_irq_handler CAN1_RX1_IRQHandler // CAN1 RX1 | |
| 296 def_irq_handler CAN1_SCE_IRQHandler // CAN1 SCE | |
| 297 def_irq_handler EXTI9_5_IRQHandler // External Line[9:5]s | |
| 298 def_irq_handler TIM1_BRK_TIM9_IRQHandler // TIM1 Break and TIM9 | |
| 299 def_irq_handler TIM1_UP_TIM10_IRQHandler // TIM1 Update and TIM10 | |
| 300 def_irq_handler TIM1_TRG_COM_TIM11_IRQHandler // TIM1 Trigger and Commutation and TIM11 | |
| 301 def_irq_handler TIM1_CC_IRQHandler // TIM1 Capture Compare | |
| 302 def_irq_handler TIM2_IRQHandler // TIM2 | |
| 303 def_irq_handler TIM3_IRQHandler // TIM3 | |
| 304 def_irq_handler TIM4_IRQHandler // TIM4 | |
| 305 def_irq_handler I2C1_EV_IRQHandler // I2C1 Event | |
| 306 def_irq_handler I2C1_ER_IRQHandler // I2C1 Error | |
| 307 def_irq_handler I2C2_EV_IRQHandler // I2C2 Event | |
| 308 def_irq_handler I2C2_ER_IRQHandler // I2C2 Error | |
| 309 def_irq_handler SPI1_IRQHandler // SPI1 | |
| 310 def_irq_handler SPI2_IRQHandler // SPI2 | |
| 311 def_irq_handler USART1_IRQHandler // USART1 | |
| 312 def_irq_handler USART2_IRQHandler // USART2 | |
| 313 def_irq_handler USART3_IRQHandler // USART3 | |
| 314 def_irq_handler EXTI15_10_IRQHandler // External Line[15:10]s | |
| 315 def_irq_handler RTC_Alarm_IRQHandler // RTC Alarm (A and B) through EXTI Line | |
| 316 def_irq_handler OTG_FS_WKUP_IRQHandler // USB OTG FS Wakeup through EXTI line | |
| 317 def_irq_handler TIM8_BRK_TIM12_IRQHandler // TIM8 Break and TIM12 | |
| 318 def_irq_handler TIM8_UP_TIM13_IRQHandler // TIM8 Update and TIM13 | |
| 319 def_irq_handler TIM8_TRG_COM_TIM14_IRQHandler // TIM8 Trigger and Commutation and TIM14 | |
| 320 def_irq_handler TIM8_CC_IRQHandler // TIM8 Capture Compare | |
| 321 def_irq_handler DMA1_Stream7_IRQHandler // DMA1 Stream7 | |
| 322 def_irq_handler FSMC_IRQHandler // FSMC | |
| 323 def_irq_handler SDIO_IRQHandler // SDIO | |
| 324 def_irq_handler TIM5_IRQHandler // TIM5 | |
| 325 def_irq_handler SPI3_IRQHandler // SPI3 | |
| 326 def_irq_handler UART4_IRQHandler // UART4 | |
| 327 def_irq_handler UART5_IRQHandler // UART5 | |
| 328 def_irq_handler TIM6_DAC_IRQHandler // TIM6 and DAC1&2 underrun errors | |
| 329 def_irq_handler TIM7_IRQHandler // TIM7 | |
| 330 def_irq_handler DMA2_Stream0_IRQHandler // DMA2 Stream 0 | |
| 331 def_irq_handler DMA2_Stream1_IRQHandler // DMA2 Stream 1 | |
| 332 def_irq_handler DMA2_Stream2_IRQHandler // DMA2 Stream 2 | |
| 333 def_irq_handler DMA2_Stream3_IRQHandler // DMA2 Stream 3 | |
| 334 def_irq_handler DMA2_Stream4_IRQHandler // DMA2 Stream 4 | |
| 335 def_irq_handler ETH_IRQHandler // Ethernet | |
| 336 def_irq_handler ETH_WKUP_IRQHandler // Ethernet Wakeup through EXTI line | |
| 337 def_irq_handler CAN2_TX_IRQHandler // CAN2 TX | |
| 338 def_irq_handler CAN2_RX0_IRQHandler // CAN2 RX0 | |
| 339 def_irq_handler CAN2_RX1_IRQHandler // CAN2 RX1 | |
| 340 def_irq_handler CAN2_SCE_IRQHandler // CAN2 SCE | |
| 341 def_irq_handler OTG_FS_IRQHandler // USB OTG FS | |
| 342 def_irq_handler DMA2_Stream5_IRQHandler // DMA2 Stream 5 | |
| 343 def_irq_handler DMA2_Stream6_IRQHandler // DMA2 Stream 6 | |
| 344 def_irq_handler DMA2_Stream7_IRQHandler // DMA2 Stream 7 | |
| 345 def_irq_handler USART6_IRQHandler // USART6 | |
| 346 def_irq_handler I2C3_EV_IRQHandler // I2C3 event | |
| 347 def_irq_handler I2C3_ER_IRQHandler // I2C3 error | |
| 348 def_irq_handler OTG_HS_EP1_OUT_IRQHandler // USB OTG HS End Point 1 Out | |
| 349 def_irq_handler OTG_HS_EP1_IN_IRQHandler // USB OTG HS End Point 1 In | |
| 350 def_irq_handler OTG_HS_WKUP_IRQHandler // USB OTG HS Wakeup through EXTI | |
| 351 def_irq_handler OTG_HS_IRQHandler // USB OTG HS | |
| 352 def_irq_handler DCMI_IRQHandler // DCMI | |
| 353 def_irq_handler CRYP_IRQHandler // CRYP crypto | |
| 354 def_irq_handler HASH_RNG_IRQHandler // Hash and Rng | |
| 355 def_irq_handler FPU_IRQHandler // FPU | |
| 356 | |
| 357 .end |