tool/mbed/mbed-sdk/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32L0/TARGET_NUCLEO_L053R8/TOOLCHAIN_GCC_ARM/startup_stm32l053xx.s

   1 /**
   2   ******************************************************************************
   3   * @file      startup_stm32l053xx.s
   4   * @author    MCD Application Team
   5   * @version   V1.2.0
   6   * @date      06-February-2015
   7   * @brief     STM32L053xx Devices vector table for Atollic TrueSTUDIO toolchain.
   8   *            This module performs:
   9   *                - Set the initial SP
  10   *                - Set the initial PC == Reset_Handler,
  11   *                - Set the vector table entries with the exceptions ISR address
  12   *                - Branches to main in the C library (which eventually
  13   *                  calls main()).
  14   *            After Reset the Cortex-M0+ processor is in Thread mode,
  15   *            priority is Privileged, and the Stack is set to Main.
  16   ******************************************************************************
  17   *
  18   * Redistribution and use in source and binary forms, with or without modification,
  19   * are permitted provided that the following conditions are met:
  20   *   1. Redistributions of source code must retain the above copyright notice,
  21   *      this list of conditions and the following disclaimer.
  22   *   2. Redistributions in binary form must reproduce the above copyright notice,
  23   *      this list of conditions and the following disclaimer in the documentation
  24   *      and/or other materials provided with the distribution.
  25   *   3. Neither the name of STMicroelectronics nor the names of its contributors
  26   *      may be used to endorse or promote products derived from this software
  27   *      without specific prior written permission.
  28   *
  29   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  30   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  31   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  32   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  33   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  35   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  36   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  37   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  38   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39   *
  40   ******************************************************************************
  41   */
  42
  43   .syntax unified
  44   .cpu cortex-m0plus
  45   .fpu softvfp
  46   .thumb
  47
  48 .global  g_pfnVectors
  49 .global  Default_Handler
  50
  51 /* start address for the initialization values of the .data section.
  52 defined in linker script */
  53 .word  _sidata
  54 /* start address for the .data section. defined in linker script */
  55 .word  _sdata
  56 /* end address for the .data section. defined in linker script */
  57 .word  _edata
  58 /* start address for the .bss section. defined in linker script */
  59 .word  _sbss
  60 /* end address for the .bss section. defined in linker script */
  61 .word  _ebss
  62
  63     .section  .text.Reset_Handler
  64   .weak  Reset_Handler
  65   .type  Reset_Handler, %function
  66 Reset_Handler:
  67   ldr   r0, =_estack
  68   mov   sp, r0          /* set stack pointer */
  69
  70 /* Copy the data segment initializers from flash to SRAM */
  71   movs  r1, #0
  72   b  LoopCopyDataInit
  73
  74 CopyDataInit:
  75   ldr  r3, =_sidata
  76   ldr  r3, [r3, r1]
  77   str  r3, [r0, r1]
  78   adds  r1, r1, #4
  79
  80 LoopCopyDataInit:
  81   ldr  r0, =_sdata
  82   ldr  r3, =_edata
  83   adds  r2, r0, r1
  84   cmp  r2, r3
  85   bcc  CopyDataInit
  86   ldr  r2, =_sbss
  87   b  LoopFillZerobss
  88 /* Zero fill the bss segment. */
  89 FillZerobss:
  90   movs  r3, #0
  91   str  r3, [r2]
  92   adds r2, r2, #4
  93
  94
  95 LoopFillZerobss:
  96   ldr  r3, = _ebss
  97   cmp  r2, r3
  98   bcc  FillZerobss
  99
 100 /* Call the clock system intitialization function.*/
 101   bl  SystemInit
 102 /* Call static constructors */
 103   //bl __libc_init_array
 104 /* Call the application's entry point.*/
 105   //bl  main
 106   bl _start
 107
 108 LoopForever:
 109   b LoopForever
 110
 111
 112 .size  Reset_Handler, .-Reset_Handler
 113
 114 /**
 115  * @brief  This is the code that gets called when the processor receives an
 116  *         unexpected interrupt.  This simply enters an infinite loop, preserving
 117  *         the system state for examination by a debugger.
 118  *
 119  * @param  None
 120  * @retval : None
 121 */
 122     .section  .text.Default_Handler,"ax",%progbits
 123 Default_Handler:
 124 Infinite_Loop:
 125   b  Infinite_Loop
 126   .size  Default_Handler, .-Default_Handler
 127 /******************************************************************************
 128 *
 129 * The minimal vector table for a Cortex M0.  Note that the proper constructs
 130 * must be placed on this to ensure that it ends up at physical address
 131 * 0x0000.0000.
 132 *
 133 ******************************************************************************/
 134    .section  .isr_vector,"a",%progbits
 135   .type  g_pfnVectors, %object
 136   .size  g_pfnVectors, .-g_pfnVectors
 137
 138
 139 g_pfnVectors:
 140   .word  _estack
 141   .word  Reset_Handler
 142   .word  NMI_Handler
 143   .word  HardFault_Handler
 144   .word  0
 145   .word  0
 146   .word  0
 147   .word  0
 148   .word  0
 149   .word  0
 150   .word  0
 151   .word  SVC_Handler
 152   .word  DebugMon_Handler
 153   .word  0
 154   .word  PendSV_Handler
 155   .word  SysTick_Handler
 156   .word     WWDG_IRQHandler                   /* Window WatchDog              */
 157   .word     PVD_IRQHandler                    /* PVD through EXTI Line detection */
 158   .word     RTC_IRQHandler                    /* RTC through the EXTI line     */
 159   .word     FLASH_IRQHandler                  /* FLASH                        */
 160   .word     RCC_CRS_IRQHandler                /* RCC and CRS                  */
 161   .word     EXTI0_1_IRQHandler                /* EXTI Line 0 and 1            */
 162   .word     EXTI2_3_IRQHandler                /* EXTI Line 2 and 3            */
 163   .word     EXTI4_15_IRQHandler               /* EXTI Line 4 to 15            */
 164   .word     TSC_IRQHandler                     /* TSC                           */
 165   .word     DMA1_Channel1_IRQHandler          /* DMA1 Channel 1               */
 166   .word     DMA1_Channel2_3_IRQHandler        /* DMA1 Channel 2 and Channel 3 */
 167   .word     DMA1_Channel4_5_6_7_IRQHandler    /* DMA1 Channel 4, Channel 5, Channel 6 and Channel 7*/
 168   .word     ADC1_COMP_IRQHandler              /* ADC1, COMP1 and COMP2        */
 169   .word     LPTIM1_IRQHandler                 /* LPTIM1                       */
 170   .word     0                                 /* Reserved                     */
 171   .word     TIM2_IRQHandler                   /* TIM2                         */
 172   .word     0                                 /* Reserved                     */
 173   .word     TIM6_DAC_IRQHandler               /* TIM6 and DAC                 */
 174   .word     0                                                     /* Reserved                     */
 175   .word     0                                                             /* Reserved                     */
 176   .word     TIM21_IRQHandler                  /* TIM21                        */
 177   .word     0                                 /* Reserved                     */
 178   .word     TIM22_IRQHandler                  /* TIM22                        */
 179   .word     I2C1_IRQHandler                   /* I2C1                         */
 180   .word     I2C2_IRQHandler                   /* I2C2                         */
 181   .word     SPI1_IRQHandler                   /* SPI1                         */
 182   .word     SPI2_IRQHandler                   /* SPI2                         */
 183   .word     USART1_IRQHandler                 /* USART1                       */
 184   .word     USART2_IRQHandler                 /* USART2                       */
 185   .word     RNG_LPUART1_IRQHandler            /* RNG and LPUART1              */
 186   .word     LCD_IRQHandler                    /* LCD                          */
 187   .word     USB_IRQHandler                    /* USB                          */
 188
 189 /*******************************************************************************
 190 *
 191 * Provide weak aliases for each Exception handler to the Default_Handler.
 192 * As they are weak aliases, any function with the same name will override
 193 * this definition.
 194 *
 195 *******************************************************************************/
 196
 197    .weak      NMI_Handler
 198    .thumb_set NMI_Handler,Default_Handler
 199
 200    .weak      HardFault_Handler
 201    .thumb_set HardFault_Handler,Default_Handler
 202
 203    .weak      SVC_Handler
 204    .thumb_set SVC_Handler,Default_Handler
 205
 206    .weak      DebugMon_Handler
 207    .thumb_set DebugMon_Handler,Default_Handler
 208
 209    .weak      PendSV_Handler
 210    .thumb_set PendSV_Handler,Default_Handler
 211
 212    .weak      SysTick_Handler
 213    .thumb_set SysTick_Handler,Default_Handler
 214
 215    .weak      WWDG_IRQHandler
 216    .thumb_set WWDG_IRQHandler,Default_Handler
 217
 218    .weak      PVD_IRQHandler
 219    .thumb_set PVD_IRQHandler,Default_Handler
 220
 221    .weak      RTC_IRQHandler
 222    .thumb_set RTC_IRQHandler,Default_Handler
 223
 224    .weak      FLASH_IRQHandler
 225    .thumb_set FLASH_IRQHandler,Default_Handler
 226
 227    .weak      RCC_CRS_IRQHandler
 228    .thumb_set RCC_CRS_IRQHandler,Default_Handler
 229
 230    .weak      EXTI0_1_IRQHandler
 231    .thumb_set EXTI0_1_IRQHandler,Default_Handler
 232
 233    .weak      EXTI2_3_IRQHandler
 234    .thumb_set EXTI2_3_IRQHandler,Default_Handler
 235
 236    .weak      EXTI4_15_IRQHandler
 237    .thumb_set EXTI4_15_IRQHandler,Default_Handler
 238
 239    .weak      TSC_IRQHandler
 240    .thumb_set TSC_IRQHandler,Default_Handler
 241
 242    .weak      DMA1_Channel1_IRQHandler
 243    .thumb_set DMA1_Channel1_IRQHandler,Default_Handler
 244
 245    .weak      DMA1_Channel2_3_IRQHandler
 246    .thumb_set DMA1_Channel2_3_IRQHandler,Default_Handler
 247
 248    .weak      DMA1_Channel4_5_6_7_IRQHandler
 249    .thumb_set DMA1_Channel4_5_6_7_IRQHandler,Default_Handler
 250
 251    .weak      ADC1_COMP_IRQHandler
 252    .thumb_set ADC1_COMP_IRQHandler,Default_Handler
 253
 254    .weak      LPTIM1_IRQHandler
 255    .thumb_set LPTIM1_IRQHandler,Default_Handler
 256
 257    .weak      TIM2_IRQHandler
 258    .thumb_set TIM2_IRQHandler,Default_Handler
 259
 260    .weak      TIM6_DAC_IRQHandler
 261    .thumb_set TIM6_DAC_IRQHandler,Default_Handler
 262
 263    .weak      TIM21_IRQHandler
 264    .thumb_set TIM21_IRQHandler,Default_Handler
 265
 266    .weak      TIM22_IRQHandler
 267    .thumb_set TIM22_IRQHandler,Default_Handler
 268
 269    .weak      I2C1_IRQHandler
 270    .thumb_set I2C1_IRQHandler,Default_Handler
 271
 272    .weak      I2C2_IRQHandler
 273    .thumb_set I2C2_IRQHandler,Default_Handler
 274
 275    .weak      SPI1_IRQHandler
 276    .thumb_set SPI1_IRQHandler,Default_Handler
 277
 278    .weak      SPI2_IRQHandler
 279    .thumb_set SPI2_IRQHandler,Default_Handler
 280
 281    .weak      USART1_IRQHandler
 282    .thumb_set USART1_IRQHandler,Default_Handler
 283
 284    .weak      USART2_IRQHandler
 285    .thumb_set USART2_IRQHandler,Default_Handler
 286
 287    .weak      RNG_LPUART1_IRQHandler
 288    .thumb_set RNG_LPUART1_IRQHandler,Default_Handler
 289
 290    .weak      LCD_IRQHandler
 291    .thumb_set LCD_IRQHandler,Default_Handler
 292
 293    .weak      USB_IRQHandler
 294    .thumb_set USB_IRQHandler,Default_Handler
 295
 296
 297
 298 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
 299