#include <cstdint>

#include "sh7091/store_queue_transfer.hpp"

extern uint32_t __text_link_start __asm("__text_link_start");
extern uint32_t __text_link_end __asm("__text_link_end");
extern uint32_t __text_load_start __asm("__text_load_start");

extern uint32_t __data_link_start __asm("__data_link_start");
extern uint32_t __data_link_end __asm("__data_link_end");
extern uint32_t __data_load_start __asm("__data_load_start");

extern uint32_t __rodata_link_start __asm("__rodata_link_start");
extern uint32_t __rodata_link_end __asm("__rodata_link_end");
extern uint32_t __rodata_load_start __asm("__rodata_load_start");

extern uint32_t __ctors_link_start __asm("__ctors_link_start");
extern uint32_t __ctors_link_end __asm("__ctors_link_end");

extern uint32_t __bss_link_start __asm("__bss_link_start");
extern uint32_t __bss_link_end __asm("__bss_link_end");

extern void main();

typedef void(init_t)(void);

void runtime_init()
__attribute__((section(".text.start.runtime_init")));

void runtime_init()
{
  // relocate text (if necessary)
  //copy(&__text_link_start, &__text_link_end, &__text_load_start);

  // relocate data (if necessary)
  //copy(&__data_link_start, &__data_link_end, &__data_load_start);

  // relocate rodata (if necessary)
  //copy(&__rodata_link_start, &__rodata_link_end, &__rodata_load_start);

  // clear BSS
  uint32_t * bss_start = &__bss_link_start;
  uint32_t * bss_end = &__bss_link_end;
  int bss_length = bss_end - bss_start;
  sh7091::store_queue_transfer::zeroize(bss_start, bss_length, 0);

  // call ctors
  uint32_t * ctors_start = &__ctors_link_start;
  uint32_t * ctors_end = &__ctors_link_end;
  while (ctors_start < ctors_end) {
    ((init_t *)(*ctors_start++))();
  }
}

extern "C"
void foo()
{
  runtime_init();
}