1/**
2  ******************************************************************************
3  * @file      startup_stm32f072xb.s
4  * @author    MCD Application Team
5  * @brief     STM32F072x8/STM32F072xB devices vector table for GCC toolchain.
6  *            This module performs:
7  *                - Set the initial SP
8  *                - Set the initial PC == Reset_Handler,
9  *                - Set the vector table entries with the exceptions ISR address
10  *                - Branches to main in the C library (which eventually
11  *                  calls main()).
12  *            After Reset the Cortex-M0 processor is in Thread mode,
13  *            priority is Privileged, and the Stack is set to Main.
14  ******************************************************************************
15  * @attention
16  *
17  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
18  * All rights reserved.</center></h2>
19  *
20  * This software component is licensed by ST under BSD 3-Clause license,
21  * the "License"; You may not use this file except in compliance with the
22  * License. You may obtain a copy of the License at:
23  *                        opensource.org/licenses/BSD-3-Clause
24  *
25  ******************************************************************************
26  */
27
28  .syntax unified
29  .cpu cortex-m0
30  .fpu softvfp
31  .thumb
32
33.global g_pfnVectors
34.global Default_Handler
35
36/* start address for the initialization values of the .data section.
37defined in linker script */
38.word _sidata
39/* start address for the .data section. defined in linker script */
40.word _sdata
41/* end address for the .data section. defined in linker script */
42.word _edata
43/* start address for the .bss section. defined in linker script */
44.word _sbss
45/* end address for the .bss section. defined in linker script */
46.word _ebss
47
48  .section .text.Reset_Handler
49  .weak Reset_Handler
50  .type Reset_Handler, %function
51Reset_Handler:
52  ldr   r0, =_estack
53  mov   sp, r0          /* set stack pointer */
54
55/* Copy the data segment initializers from flash to SRAM */
56  ldr r0, =_sdata
57  ldr r1, =_edata
58  ldr r2, =_sidata
59  movs r3, #0
60  b LoopCopyDataInit
61
62CopyDataInit:
63  ldr r4, [r2, r3]
64  str r4, [r0, r3]
65  adds r3, r3, #4
66
67LoopCopyDataInit:
68  adds r4, r0, r3
69  cmp r4, r1
70  bcc CopyDataInit
71
72/* Zero fill the bss segment. */
73  ldr r2, =_sbss
74  ldr r4, =_ebss
75  movs r3, #0
76  b LoopFillZerobss
77
78FillZerobss:
79  str  r3, [r2]
80  adds r2, r2, #4
81
82LoopFillZerobss:
83  cmp r2, r4
84  bcc FillZerobss
85
86/* Call the clock system intitialization function.*/
87  bl  SystemInit
88/* Call static constructors */
89  bl __libc_init_array
90/* Call the application's entry point.*/
91  bl entry
92
93LoopForever:
94    b LoopForever
95
96
97.size Reset_Handler, .-Reset_Handler
98
99/**
100 * @brief  This is the code that gets called when the processor receives an
101 *         unexpected interrupt.  This simply enters an infinite loop, preserving
102 *         the system state for examination by a debugger.
103 *
104 * @param  None
105 * @retval : None
106*/
107    .section .text.Default_Handler,"ax",%progbits
108Default_Handler:
109Infinite_Loop:
110  b Infinite_Loop
111  .size Default_Handler, .-Default_Handler
112/******************************************************************************
113*
114* The minimal vector table for a Cortex M0.  Note that the proper constructs
115* must be placed on this to ensure that it ends up at physical address
116* 0x0000.0000.
117*
118******************************************************************************/
119   .section .isr_vector,"a",%progbits
120  .type g_pfnVectors, %object
121  .size g_pfnVectors, .-g_pfnVectors
122
123
124g_pfnVectors:
125  .word  _estack
126  .word  Reset_Handler
127  .word  NMI_Handler
128  .word  HardFault_Handler
129  .word  0
130  .word  0
131  .word  0
132  .word  0
133  .word  0
134  .word  0
135  .word  0
136  .word  SVC_Handler
137  .word  0
138  .word  0
139  .word  PendSV_Handler
140  .word  SysTick_Handler
141  .word  WWDG_IRQHandler                   /* Window WatchDog              */
142  .word  PVD_VDDIO2_IRQHandler             /* PVD and VDDIO2 through EXTI Line detect */
143  .word  RTC_IRQHandler                    /* RTC through the EXTI line    */
144  .word  FLASH_IRQHandler                  /* FLASH                        */
145  .word  RCC_CRS_IRQHandler                /* RCC and CRS                  */
146  .word  EXTI0_1_IRQHandler                /* EXTI Line 0 and 1            */
147  .word  EXTI2_3_IRQHandler                /* EXTI Line 2 and 3            */
148  .word  EXTI4_15_IRQHandler               /* EXTI Line 4 to 15            */
149  .word  TSC_IRQHandler                    /* TSC                          */
150  .word  DMA1_Channel1_IRQHandler          /* DMA1 Channel 1               */
151  .word  DMA1_Channel2_3_IRQHandler        /* DMA1 Channel 2 and Channel 3 */
152  .word  DMA1_Channel4_5_6_7_IRQHandler    /* DMA1 Channel 4, Channel 5, Channel 6 and Channel 7*/
153  .word  ADC1_COMP_IRQHandler              /* ADC1, COMP1 and COMP2         */
154  .word  TIM1_BRK_UP_TRG_COM_IRQHandler    /* TIM1 Break, Update, Trigger and Commutation */
155  .word  TIM1_CC_IRQHandler                /* TIM1 Capture Compare         */
156  .word  TIM2_IRQHandler                   /* TIM2                         */
157  .word  TIM3_IRQHandler                   /* TIM3                         */
158  .word  TIM6_DAC_IRQHandler               /* TIM6 and DAC                 */
159  .word  TIM7_IRQHandler                   /* TIM7                         */
160  .word  TIM14_IRQHandler                  /* TIM14                        */
161  .word  TIM15_IRQHandler                  /* TIM15                        */
162  .word  TIM16_IRQHandler                  /* TIM16                        */
163  .word  TIM17_IRQHandler                  /* TIM17                        */
164  .word  I2C1_IRQHandler                   /* I2C1                         */
165  .word  I2C2_IRQHandler                   /* I2C2                         */
166  .word  SPI1_IRQHandler                   /* SPI1                         */
167  .word  SPI2_IRQHandler                   /* SPI2                         */
168  .word  USART1_IRQHandler                 /* USART1                       */
169  .word  USART2_IRQHandler                 /* USART2                       */
170  .word  USART3_4_IRQHandler               /* USART3 and USART4            */
171  .word  CEC_CAN_IRQHandler                /* CEC and CAN                  */
172  .word  USB_IRQHandler                    /* USB                          */
173
174/*******************************************************************************
175*
176* Provide weak aliases for each Exception handler to the Default_Handler.
177* As they are weak aliases, any function with the same name will override
178* this definition.
179*
180*******************************************************************************/
181
182  .weak      NMI_Handler
183  .thumb_set NMI_Handler,Default_Handler
184
185  .weak      HardFault_Handler
186  .thumb_set HardFault_Handler,Default_Handler
187
188  .weak      SVC_Handler
189  .thumb_set SVC_Handler,Default_Handler
190
191  .weak      PendSV_Handler
192  .thumb_set PendSV_Handler,Default_Handler
193
194  .weak      SysTick_Handler
195  .thumb_set SysTick_Handler,Default_Handler
196
197  .weak      WWDG_IRQHandler
198  .thumb_set WWDG_IRQHandler,Default_Handler
199
200  .weak      PVD_VDDIO2_IRQHandler
201  .thumb_set PVD_VDDIO2_IRQHandler,Default_Handler
202
203  .weak      RTC_IRQHandler
204  .thumb_set RTC_IRQHandler,Default_Handler
205
206  .weak      FLASH_IRQHandler
207  .thumb_set FLASH_IRQHandler,Default_Handler
208
209  .weak      RCC_CRS_IRQHandler
210  .thumb_set RCC_CRS_IRQHandler,Default_Handler
211
212  .weak      EXTI0_1_IRQHandler
213  .thumb_set EXTI0_1_IRQHandler,Default_Handler
214
215  .weak      EXTI2_3_IRQHandler
216  .thumb_set EXTI2_3_IRQHandler,Default_Handler
217
218  .weak      EXTI4_15_IRQHandler
219  .thumb_set EXTI4_15_IRQHandler,Default_Handler
220
221  .weak      TSC_IRQHandler
222  .thumb_set TSC_IRQHandler,Default_Handler
223
224  .weak      DMA1_Channel1_IRQHandler
225  .thumb_set DMA1_Channel1_IRQHandler,Default_Handler
226
227  .weak      DMA1_Channel2_3_IRQHandler
228  .thumb_set DMA1_Channel2_3_IRQHandler,Default_Handler
229
230  .weak      DMA1_Channel4_5_6_7_IRQHandler
231  .thumb_set DMA1_Channel4_5_6_7_IRQHandler,Default_Handler
232
233  .weak      ADC1_COMP_IRQHandler
234  .thumb_set ADC1_COMP_IRQHandler,Default_Handler
235
236  .weak      TIM1_BRK_UP_TRG_COM_IRQHandler
237  .thumb_set TIM1_BRK_UP_TRG_COM_IRQHandler,Default_Handler
238
239  .weak      TIM1_CC_IRQHandler
240  .thumb_set TIM1_CC_IRQHandler,Default_Handler
241
242  .weak      TIM2_IRQHandler
243  .thumb_set TIM2_IRQHandler,Default_Handler
244
245  .weak      TIM3_IRQHandler
246  .thumb_set TIM3_IRQHandler,Default_Handler
247
248  .weak      TIM6_DAC_IRQHandler
249  .thumb_set TIM6_DAC_IRQHandler,Default_Handler
250
251  .weak      TIM7_IRQHandler
252  .thumb_set TIM7_IRQHandler,Default_Handler
253
254  .weak      TIM14_IRQHandler
255  .thumb_set TIM14_IRQHandler,Default_Handler
256
257  .weak      TIM15_IRQHandler
258  .thumb_set TIM15_IRQHandler,Default_Handler
259
260  .weak      TIM16_IRQHandler
261  .thumb_set TIM16_IRQHandler,Default_Handler
262
263  .weak      TIM17_IRQHandler
264  .thumb_set TIM17_IRQHandler,Default_Handler
265
266  .weak      I2C1_IRQHandler
267  .thumb_set I2C1_IRQHandler,Default_Handler
268
269  .weak      I2C2_IRQHandler
270  .thumb_set I2C2_IRQHandler,Default_Handler
271
272  .weak      SPI1_IRQHandler
273  .thumb_set SPI1_IRQHandler,Default_Handler
274
275  .weak      SPI2_IRQHandler
276  .thumb_set SPI2_IRQHandler,Default_Handler
277
278  .weak      USART1_IRQHandler
279  .thumb_set USART1_IRQHandler,Default_Handler
280
281  .weak      USART2_IRQHandler
282  .thumb_set USART2_IRQHandler,Default_Handler
283
284  .weak      USART3_4_IRQHandler
285  .thumb_set USART3_4_IRQHandler,Default_Handler
286
287  .weak      CEC_CAN_IRQHandler
288  .thumb_set CEC_CAN_IRQHandler,Default_Handler
289
290  .weak      USB_IRQHandler
291  .thumb_set USB_IRQHandler,Default_Handler
292
293/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
294
295