/*!
 * @file       startup_bmp561.S
 *
 * @brief      CMSIS Cortex-M0 PLUS based Core Device Startup File for Device startup_bmp561
 *
 * @version    V1.0.0
 *
 * @date       2025-01-01
 *
 * @attention
 *
 *  Copyright (C) 2025 Geehy Semiconductor
 *
 *  You may not use this file except in compliance with the
 *  GEEHY COPYRIGHT NOTICE (GEEHY SOFTWARE PACKAGE LICENSE).
 *
 *  The program is only for reference, which is distributed in the hope
 *  that it will be useful and instructional for customers to develop
 *  their software. Unless required by applicable law or agreed to in
 *  writing, the program is distributed on an "AS IS" BASIS, WITHOUT
 *  ANY WARRANTY OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the GEEHY SOFTWARE PACKAGE LICENSE for the governing permissions
 *  and limitations under the License.
 */

  .syntax unified
  .cpu cortex-m0plus
  .fpu softvfp
  .thumb

.global g_apm32_Vectors
.global Default_Handler

.word _start_address_init_data
.word _start_address_data
.word _end_address_data
.word _start_address_bss
.word _end_address_bss

  .section .text.Reset_Handler
  .weak Reset_Handler
  .type Reset_Handler, %function

// Reset handler routine
Reset_Handler:
// User Stack and Heap initialization
  ldr   r0, =__initial_sp
  mov   sp, r0

  ldr r0, =_start_address_data
  ldr r1, =_end_address_data
  ldr r2, =_start_address_init_data
  movs r3, #0
  b L_loop0_0

L_loop0:
  ldr r4, [r2, r3]
  str r4, [r0, r3]
  adds r3, r3, #4

L_loop0_0:
  adds r4, r0, r3
  cmp r4, r1
  bcc L_loop0

  ldr r2, =_start_address_bss
  ldr r4, =_end_address_bss
  movs r3, #0
  b L_loop1

L_loop2:
  str  r3, [r2]
  adds r2, r2, #4

L_loop1:
  cmp r2, r4
  bcc L_loop2

  bl  SystemInit
  bl __libc_init_array
  bl main

L_loop3:
    b L_loop3

.size Reset_Handler, .-Reset_Handler

// This is the code that gets called when the processor receives an unexpected interrupt.
    .section .text.Default_Handler,"ax",%progbits
Default_Handler:
L_Loop_infinite:
  b L_Loop_infinite
  .size Default_Handler, .-Default_Handler

// The minimal vector table for a Cortex M0 Plus.
   .section .apm32_isr_vector,"a",%progbits
  .type g_apm32_Vectors, %object
  .size g_apm32_Vectors, .-g_apm32_Vectors

// Vector Table Mapped to Address 0 at Reset
g_apm32_Vectors:
  .word  __initial_sp
  .word  Reset_Handler                      // Reset Handler
  .word  NMI_Handler                        // NMI Handler
  .word  HardFault_Handler                  // Hard Fault Handler
  .word  0x5A5A5A5A                         // Reserved
  .word  0x4B4B4B4B                         // Reserved
  .word  0x3C3C3C3C                         // Reserved
  .word  0x2D2D2D2D                         // Reserved
  .word  0                                  // Reserved
  .word  0                                  // Reserved
  .word  0                                  // Reserved
  .word  SVC_Handler                        // SVCall Handler
  .word  0                                  // Reserved
  .word  0                                  // Reserved
  .word  PendSV_Handler                     // PendSV Handler
  .word  SysTick_Handler                    // SysTick Handler

  // External Interrupts
  .word     I2C_Handler
  .word     HSC_Handler
  .word     UART_Handler
  .word     0
  .word     WWDT_Handler
  .word     TMR0_Handler
  .word     TMR1_Handler
  .word     CADC_Handler
  .word     VADC_Handler
  .word     FLASH_Handler
  .word     WUPT_Handler
  .word     I2C_STA_Handler
  .word     EINT0_Handler
  .word     EINT1_Handler
  .word     EINT2_Handler
  .word     SHA256_Handler

// Default exception/interrupt handler

  .weak      NMI_Handler
  .thumb_set NMI_Handler,Default_Handler

  .weak      HardFault_Handler
  .thumb_set HardFault_Handler,Default_Handler

  .weak      SVC_Handler
  .thumb_set SVC_Handler,Default_Handler

  .weak      PendSV_Handler
  .thumb_set PendSV_Handler,Default_Handler

  .weak      SysTick_Handler
  .thumb_set SysTick_Handler,Default_Handler

  .weak      I2C_Handler
  .thumb_set I2C_Handler,Default_Handler

  .weak      HSC_Handler
  .thumb_set HSC_Handler,Default_Handler

  .weak      UART_Handler
  .thumb_set UART_Handler,Default_Handler

  .weak      WWDT_Handler
  .thumb_set WWDT_Handler,Default_Handler

  .weak      TMR0_Handler
  .thumb_set TMR0_Handler,Default_Handler

  .weak      TMR1_Handler
  .thumb_set TMR1_Handler,Default_Handler

  .weak      CADC_Handler
  .thumb_set CADC_Handler,Default_Handler

  .weak      VADC_Handler
  .thumb_set VADC_Handler,Default_Handler

  .weak      FLASH_Handler
  .thumb_set FLASH_Handler,Default_Handler

  .weak      WUPT_Handler
  .thumb_set WUPT_Handler,Default_Handler

  .weak      I2C_STA_Handler
  .thumb_set I2C_STA_Handler,Default_Handler

  .weak      EINT0_Handler
  .thumb_set EINT0_Handler,Default_Handler

  .weak      EINT1_Handler
  .thumb_set EINT1_Handler,Default_Handler

  .weak      EINT2_Handler
  .thumb_set EINT2_Handler,Default_Handler

  .weak      SHA256_Handler
  .thumb_set SHA256_Handler,Default_Handler
