#include <unicorn/unicorn.h>

#define HARDWARE_ARCHITECTURE UC_ARCH_ARM
#define HARDWARE_MODE 16
#define MEMORY_STARTING_ADDRESS 8192
#define MEMORY_SIZE 4096
#define MEMORY_PERMISSIONS 6
#define BINARY_CODE "\x56\xe8\x46\x46\x80\xf6\x8c\x56\xff\xbf\xcd\x90\xda\xa0\xed\xe8\x46\x43\x45\xe5\x80\x90\x44\x46\x04"

static void hook_code(uc_engine *uc, uint64_t address, uint32_t size, void *user_data) {
  printf("hook_code(…) called\n");
}

int main(int argc, char **argv, char **envp) {
  uc_engine *uc;
  if (uc_open(HARDWARE_ARCHITECTURE, HARDWARE_MODE, &uc)) {
    printf("uc_open(…) failed\n");
    return 1;
  }
  uc_mem_map(uc, MEMORY_STARTING_ADDRESS, MEMORY_SIZE, MEMORY_PERMISSIONS);
  if (uc_mem_write(uc, MEMORY_STARTING_ADDRESS, BINARY_CODE, sizeof(BINARY_CODE) - 1)) {
    printf("uc_mem_write(…) failed\n");
    return 1;
  }
  uc_hook trace;
  uc_hook_add(uc, &trace, UC_HOOK_CODE, hook_code, NULL, (uint64_t)MEMORY_STARTING_ADDRESS, (uint64_t)(MEMORY_STARTING_ADDRESS + 1));
  printf("uc_emu_start(…)\n");
  uc_emu_start(uc, MEMORY_STARTING_ADDRESS, MEMORY_STARTING_ADDRESS + sizeof(BINARY_CODE) - 1, 0, 0);
  printf("done\n");
  return 0;
}