/**
  ******************************************************************************
  * @file      startup_stm32l476xx.s
  * @author    MCD Application Team
  * @brief     STM32L476xx devices vector table GCC toolchain.
  *            This module performs:
  *                - Set the initial SP
  *                - Set the initial PC == Reset_Handler,
  *                - Set the vector table entries with the exceptions ISR address,
  *                - Configure the clock system
  *                - Branches to main in the C library (which eventually
  *                  calls main()).
  *            After Reset the Cortex-M4 processor is in Thread mode,
  *            priority is Privileged, and the Stack is set to Main.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

  .syntax unified
  .cpu cortex-m4
  .fpu softvfp
  .thumb

.global  g_pfnVectors
.global  Default_Handler

/* start address for the initialization values of the .data section.
defined in linker script */
.word  _sidata
/* start address for the .data section. defined in linker script */
.word  _sdata
/* end address for the .data section. defined in linker script */
.word  _edata
/* start address for the .bss section. defined in linker script */
.word  _sbss
/* end address for the .bss section. defined in linker script */
.word  _ebss

.equ  BootRAM,        0xF1E0F85F
/**
 * @brief  This is the code that gets called when the processor first
 *          starts execution following a reset event. Only the absolutely
 *          necessary set is performed, after which the application
 *          supplied main() routine is called.
 * @param  None
 * @retval : None
*/

  .section  .text.Reset_Handler
  .weak  Reset_Handler
  .type  Reset_Handler, %function
Reset_Handler:
  ldr   sp, =_estack    /* Atollic update: set stack pointer */

/* Copy the data segment initializers from flash to SRAM */
  movs  r1, #0
  b  LoopCopyDataInit

CopyDataInit:
  ldr  r3, =_sidata
  ldr  r3, [r3, r1]
  str  r3, [r0, r1]
  adds  r1, r1, #4

LoopCopyDataInit:
  ldr  r0, =_sdata
  ldr  r3, =_edata
  adds  r2, r0, r1
  cmp  r2, r3
  bcc  CopyDataInit

  ldr  r2, =_sbss
  b  LoopFillZerobss

/* Zero fill the bss segment. */
FillZerobss:
  movs  r3, #0
  str  r3, [r2], #4

LoopFillZerobss:
  ldr  r3, = _ebss
  cmp  r2, r3
  bcc  FillZerobss

/*
 * mynewt specific corebss clearing.
 */
  ldr   r2, =__corebss_start__
  b     LoopFillZeroCoreBss

/* Zero fill the bss segment. */
FillZeroCoreBss:
  movs  r3, #0
  str   r3, [r2], #4

LoopFillZeroCoreBss:
  ldr   r3, =__corebss_end__
  cmp   r2, r3
  bcc   FillZeroCoreBss

/* Call the clock system initialization function.*/
  bl  SystemInit
/* Call the libc entry point.*/
  bl  _start
.size  Reset_Handler, .-Reset_Handler

/**
 * @brief  This is the code that gets called when the processor receives an
 *         unexpected interrupt.  This simply enters an infinite loop, preserving
 *         the system state for examination by a debugger.
 *
 * @param  None
 * @retval : None
*/
    .section  .text.Default_Handler,"ax",%progbits
Default_Handler:
Infinite_Loop:
  b  Infinite_Loop
  .size  Default_Handler, .-Default_Handler
/******************************************************************************
*
* The minimal vector table for a Cortex-M4.  Note that the proper constructs
* must be placed on this to ensure that it ends up at physical address
* 0x0000.0000.
*
******************************************************************************/
   .section  .isr_vector,"a",%progbits
  .type  g_pfnVectors, %object
  .size  g_pfnVectors, .-g_pfnVectors


g_pfnVectors:
  .globl __isr_vector
__isr_vector:
  .word  _estack
  .word  Reset_Handler
  .word  NMI_Handler
  .word  HardFault_Handler
  .word  MemManage_Handler
  .word  BusFault_Handler
  .word  UsageFault_Handler
  .word  0
  .word  0
  .word  0
  .word  0
  .word  SVC_Handler
  .word  DebugMon_Handler
  .word  0
  .word  PendSV_Handler
  .word  SysTick_Handler
  .word  WWDG_IRQHandler
  .word  PVD_PVM_IRQHandler
  .word  TAMP_STAMP_IRQHandler
  .word  RTC_WKUP_IRQHandler
  .word  FLASH_IRQHandler
  .word  RCC_IRQHandler
  .word  EXTI0_IRQHandler
  .word  EXTI1_IRQHandler
  .word  EXTI2_IRQHandler
  .word  EXTI3_IRQHandler
  .word  EXTI4_IRQHandler
  .word  DMA1_Channel1_IRQHandler
  .word  DMA1_Channel2_IRQHandler
  .word  DMA1_Channel3_IRQHandler
  .word  DMA1_Channel4_IRQHandler
  .word  DMA1_Channel5_IRQHandler
  .word  DMA1_Channel6_IRQHandler
  .word  DMA1_Channel7_IRQHandler
  .word  ADC1_2_IRQHandler
  .word  CAN1_TX_IRQHandler
  .word  CAN1_RX0_IRQHandler
  .word  CAN1_RX1_IRQHandler
  .word  CAN1_SCE_IRQHandler
  .word  EXTI9_5_IRQHandler
  .word  TIM1_BRK_TIM15_IRQHandler
  .word  TIM1_UP_TIM16_IRQHandler
  .word  TIM1_TRG_COM_TIM17_IRQHandler
  .word  TIM1_CC_IRQHandler
  .word  TIM2_IRQHandler
  .word  TIM3_IRQHandler
  .word  TIM4_IRQHandler
  .word  I2C1_EV_IRQHandler
  .word  I2C1_ER_IRQHandler
  .word  I2C2_EV_IRQHandler
  .word  I2C2_ER_IRQHandler
  .word  SPI1_IRQHandler
  .word  SPI2_IRQHandler
  .word  USART1_IRQHandler
  .word  USART2_IRQHandler
  .word  USART3_IRQHandler
  .word  EXTI15_10_IRQHandler
  .word  RTC_Alarm_IRQHandler
  .word  DFSDM1_FLT3_IRQHandler
  .word  TIM8_BRK_IRQHandler
  .word  TIM8_UP_IRQHandler
  .word  TIM8_TRG_COM_IRQHandler
  .word  TIM8_CC_IRQHandler
  .word  ADC3_IRQHandler
  .word  FMC_IRQHandler
  .word  SDMMC1_IRQHandler
  .word  TIM5_IRQHandler
  .word  SPI3_IRQHandler
  .word  UART4_IRQHandler
  .word  UART5_IRQHandler
  .word  TIM6_DAC_IRQHandler
  .word  TIM7_IRQHandler
  .word  DMA2_Channel1_IRQHandler
  .word  DMA2_Channel2_IRQHandler
  .word  DMA2_Channel3_IRQHandler
  .word  DMA2_Channel4_IRQHandler
  .word  DMA2_Channel5_IRQHandler
  .word  DFSDM1_FLT0_IRQHandler
  .word  DFSDM1_FLT1_IRQHandler
  .word  DFSDM1_FLT2_IRQHandler
  .word  COMP_IRQHandler
  .word  LPTIM1_IRQHandler
  .word  LPTIM2_IRQHandler
  .word  OTG_FS_IRQHandler
  .word  DMA2_Channel6_IRQHandler
  .word  DMA2_Channel7_IRQHandler
  .word  LPUART1_IRQHandler
  .word  QUADSPI_IRQHandler
  .word  I2C3_EV_IRQHandler
  .word  I2C3_ER_IRQHandler
  .word  SAI1_IRQHandler
  .word  SAI2_IRQHandler
  .word  SWPMI1_IRQHandler
  .word  TSC_IRQHandler
  .word  LCD_IRQHandler
  .word 0
  .word  RNG_IRQHandler
  .word  FPU_IRQHandler


/*******************************************************************************
*
* Provide weak aliases for each Exception handler to the Default_Handler.
* As they are weak aliases, any function with the same name will override
* this definition.
*
*******************************************************************************/

  .weak  NMI_Handler
  .thumb_set NMI_Handler,Default_Handler

  .weak  HardFault_Handler
  .thumb_set HardFault_Handler,Default_Handler

  .weak  MemManage_Handler
  .thumb_set MemManage_Handler,Default_Handler

  .weak  BusFault_Handler
  .thumb_set BusFault_Handler,Default_Handler

  .weak  UsageFault_Handler
  .thumb_set UsageFault_Handler,Default_Handler

  .weak  SVC_Handler
  .thumb_set SVC_Handler,Default_Handler

  .weak  DebugMon_Handler
  .thumb_set DebugMon_Handler,Default_Handler

  .weak  PendSV_Handler
  .thumb_set PendSV_Handler,Default_Handler

  .weak  SysTick_Handler
  .thumb_set SysTick_Handler,Default_Handler

  .weak  WWDG_IRQHandler
  .thumb_set WWDG_IRQHandler,Default_Handler

  .weak  PVD_PVM_IRQHandler
  .thumb_set PVD_PVM_IRQHandler,Default_Handler

  .weak  TAMP_STAMP_IRQHandler
  .thumb_set TAMP_STAMP_IRQHandler,Default_Handler

  .weak  RTC_WKUP_IRQHandler
  .thumb_set RTC_WKUP_IRQHandler,Default_Handler

  .weak  FLASH_IRQHandler
  .thumb_set FLASH_IRQHandler,Default_Handler

  .weak  RCC_IRQHandler
  .thumb_set RCC_IRQHandler,Default_Handler

  .weak  EXTI0_IRQHandler
  .thumb_set EXTI0_IRQHandler,Default_Handler

  .weak  EXTI1_IRQHandler
  .thumb_set EXTI1_IRQHandler,Default_Handler

  .weak  EXTI2_IRQHandler
  .thumb_set EXTI2_IRQHandler,Default_Handler

  .weak  EXTI3_IRQHandler
  .thumb_set EXTI3_IRQHandler,Default_Handler

  .weak  EXTI4_IRQHandler
  .thumb_set EXTI4_IRQHandler,Default_Handler

  .weak  DMA1_Channel1_IRQHandler
  .thumb_set DMA1_Channel1_IRQHandler,Default_Handler

  .weak  DMA1_Channel2_IRQHandler
  .thumb_set DMA1_Channel2_IRQHandler,Default_Handler

  .weak  DMA1_Channel3_IRQHandler
  .thumb_set DMA1_Channel3_IRQHandler,Default_Handler

  .weak  DMA1_Channel4_IRQHandler
  .thumb_set DMA1_Channel4_IRQHandler,Default_Handler

  .weak  DMA1_Channel5_IRQHandler
  .thumb_set DMA1_Channel5_IRQHandler,Default_Handler

  .weak  DMA1_Channel6_IRQHandler
  .thumb_set DMA1_Channel6_IRQHandler,Default_Handler

  .weak  DMA1_Channel7_IRQHandler
  .thumb_set DMA1_Channel7_IRQHandler,Default_Handler

  .weak  ADC1_2_IRQHandler
  .thumb_set ADC1_2_IRQHandler,Default_Handler

  .weak  CAN1_TX_IRQHandler
  .thumb_set CAN1_TX_IRQHandler,Default_Handler

  .weak  CAN1_RX0_IRQHandler
  .thumb_set CAN1_RX0_IRQHandler,Default_Handler

  .weak  CAN1_RX1_IRQHandler
  .thumb_set CAN1_RX1_IRQHandler,Default_Handler

  .weak  CAN1_SCE_IRQHandler
  .thumb_set CAN1_SCE_IRQHandler,Default_Handler

  .weak  EXTI9_5_IRQHandler
  .thumb_set EXTI9_5_IRQHandler,Default_Handler

  .weak  TIM1_BRK_TIM15_IRQHandler
  .thumb_set TIM1_BRK_TIM15_IRQHandler,Default_Handler

  .weak  TIM1_UP_TIM16_IRQHandler
  .thumb_set TIM1_UP_TIM16_IRQHandler,Default_Handler

  .weak  TIM1_TRG_COM_TIM17_IRQHandler
  .thumb_set TIM1_TRG_COM_TIM17_IRQHandler,Default_Handler

  .weak  TIM1_CC_IRQHandler
  .thumb_set TIM1_CC_IRQHandler,Default_Handler

  .weak  TIM2_IRQHandler
  .thumb_set TIM2_IRQHandler,Default_Handler

  .weak  TIM3_IRQHandler
  .thumb_set TIM3_IRQHandler,Default_Handler

  .weak  TIM4_IRQHandler
  .thumb_set TIM4_IRQHandler,Default_Handler

  .weak  I2C1_EV_IRQHandler
  .thumb_set I2C1_EV_IRQHandler,Default_Handler

  .weak  I2C1_ER_IRQHandler
  .thumb_set I2C1_ER_IRQHandler,Default_Handler

  .weak  I2C2_EV_IRQHandler
  .thumb_set I2C2_EV_IRQHandler,Default_Handler

  .weak  I2C2_ER_IRQHandler
  .thumb_set I2C2_ER_IRQHandler,Default_Handler

  .weak  SPI1_IRQHandler
  .thumb_set SPI1_IRQHandler,Default_Handler

  .weak  SPI2_IRQHandler
  .thumb_set SPI2_IRQHandler,Default_Handler

  .weak  USART1_IRQHandler
  .thumb_set USART1_IRQHandler,Default_Handler

  .weak  USART2_IRQHandler
  .thumb_set USART2_IRQHandler,Default_Handler

  .weak  USART3_IRQHandler
  .thumb_set USART3_IRQHandler,Default_Handler

  .weak  EXTI15_10_IRQHandler
  .thumb_set EXTI15_10_IRQHandler,Default_Handler

  .weak  RTC_Alarm_IRQHandler
  .thumb_set RTC_Alarm_IRQHandler,Default_Handler

  .weak  DFSDM1_FLT3_IRQHandler
  .thumb_set DFSDM1_FLT3_IRQHandler,Default_Handler

  .weak  TIM8_BRK_IRQHandler
  .thumb_set TIM8_BRK_IRQHandler,Default_Handler

  .weak  TIM8_UP_IRQHandler
  .thumb_set TIM8_UP_IRQHandler,Default_Handler

  .weak  TIM8_TRG_COM_IRQHandler
  .thumb_set TIM8_TRG_COM_IRQHandler,Default_Handler

  .weak  TIM8_CC_IRQHandler
  .thumb_set TIM8_CC_IRQHandler,Default_Handler

  .weak  ADC3_IRQHandler
  .thumb_set ADC3_IRQHandler,Default_Handler

  .weak  FMC_IRQHandler
  .thumb_set FMC_IRQHandler,Default_Handler

  .weak  SDMMC1_IRQHandler
  .thumb_set SDMMC1_IRQHandler,Default_Handler

  .weak  TIM5_IRQHandler
  .thumb_set TIM5_IRQHandler,Default_Handler

  .weak  SPI3_IRQHandler
  .thumb_set SPI3_IRQHandler,Default_Handler

  .weak  UART4_IRQHandler
  .thumb_set UART4_IRQHandler,Default_Handler

  .weak  UART5_IRQHandler
  .thumb_set UART5_IRQHandler,Default_Handler

  .weak  TIM6_DAC_IRQHandler
  .thumb_set TIM6_DAC_IRQHandler,Default_Handler

  .weak  TIM7_IRQHandler
  .thumb_set TIM7_IRQHandler,Default_Handler

  .weak  DMA2_Channel1_IRQHandler
  .thumb_set DMA2_Channel1_IRQHandler,Default_Handler

  .weak  DMA2_Channel2_IRQHandler
  .thumb_set DMA2_Channel2_IRQHandler,Default_Handler

  .weak  DMA2_Channel3_IRQHandler
  .thumb_set DMA2_Channel3_IRQHandler,Default_Handler

  .weak  DMA2_Channel4_IRQHandler
  .thumb_set DMA2_Channel4_IRQHandler,Default_Handler

  .weak  DMA2_Channel5_IRQHandler
  .thumb_set DMA2_Channel5_IRQHandler,Default_Handler

  .weak  DFSDM1_FLT0_IRQHandler
  .thumb_set DFSDM1_FLT0_IRQHandler,Default_Handler

  .weak  DFSDM1_FLT1_IRQHandler
  .thumb_set DFSDM1_FLT1_IRQHandler,Default_Handler

  .weak  DFSDM1_FLT2_IRQHandler
  .thumb_set DFSDM1_FLT2_IRQHandler,Default_Handler

  .weak  COMP_IRQHandler
  .thumb_set COMP_IRQHandler,Default_Handler

  .weak  LPTIM1_IRQHandler
  .thumb_set LPTIM1_IRQHandler,Default_Handler

  .weak  LPTIM2_IRQHandler
  .thumb_set LPTIM2_IRQHandler,Default_Handler

  .weak  OTG_FS_IRQHandler
  .thumb_set OTG_FS_IRQHandler,Default_Handler

  .weak  DMA2_Channel6_IRQHandler
  .thumb_set DMA2_Channel6_IRQHandler,Default_Handler

  .weak  DMA2_Channel7_IRQHandler
  .thumb_set DMA2_Channel7_IRQHandler,Default_Handler

  .weak  LPUART1_IRQHandler
  .thumb_set LPUART1_IRQHandler,Default_Handler

  .weak  QUADSPI_IRQHandler
  .thumb_set QUADSPI_IRQHandler,Default_Handler

  .weak  I2C3_EV_IRQHandler
  .thumb_set I2C3_EV_IRQHandler,Default_Handler

  .weak  I2C3_ER_IRQHandler
  .thumb_set I2C3_ER_IRQHandler,Default_Handler

  .weak  SAI1_IRQHandler
  .thumb_set SAI1_IRQHandler,Default_Handler

  .weak  SAI2_IRQHandler
  .thumb_set SAI2_IRQHandler,Default_Handler

  .weak  SWPMI1_IRQHandler
  .thumb_set SWPMI1_IRQHandler,Default_Handler

  .weak  TSC_IRQHandler
  .thumb_set TSC_IRQHandler,Default_Handler

  .weak  LCD_IRQHandler
  .thumb_set LCD_IRQHandler,Default_Handler

  .weak  RNG_IRQHandler
  .thumb_set RNG_IRQHandler,Default_Handler

  .weak  FPU_IRQHandler
  .thumb_set FPU_IRQHandler,Default_Handler
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/