#include <stdint.h>

extern void stack_start(void);  // Defined in link.ld
extern int main(void);

void init_memory(void) {
  // Copy .data SECTION to ram
  extern uint32_t _data_start, _data_end, _data_addr;
  for (uint32_t *dst = &_data_start, *src = &_data_addr; dst < &_data_end;) {
	*dst++ = *src++;
  }

  // Initialize .bss SECTION with zeros
  extern uint32_t _bss_start, _bss_end;
  for (uint32_t *dst = &_bss_start; dst < &_bss_end; dst++) {
	*dst = 0;
  }
}

void reset(void) {
  (void)init_memory();

  main();

  // Infinite loop in case main returns
  for (;;) (void) 0;
}

// Create minimal interrupt vector table
// 16 standard and 86 STM32F411xC/E-specific handlers
void (*const interrupt_vector_table[16 + 86])(void) __attribute__((section(".isr_vector"))) = {
  stack_start, // Defined in link.ld
  reset
};