void f_test(void){
  char *caller_frame_addr = (char *)__builtin_frame_address(1);

  char *tmp = caller_frame_addr;

  printf("a: %d\n", (int)*tmp);
  tmp -= sizeof(int);
  printf("b: %d\n", (int)*tmp);
  tmp -= sizeof(int);
  printf("c: %d\n", (int)*tmp);
  tmp -= sizeof(int);
  printf("d: %d\n", (int)*tmp);

}

int main(void){
  int a = 0, b = 1, c = 2, d = 3, e = 4, f = 5, g = 6, h = 7;
  f_test();
  return 0;
}


===========================================

Stack frame size: 48
a: 0
b: 0
c: 1
d: 2



=============================================



  4005b6:       55                      push   rbp
  4005b7:       48 89 e5                mov    rbp,rsp
  4005ba:       48 83 ec 20             sub    rsp,0x20
  4005be:       c7 45 fc 00 00 00 00    mov    DWORD PTR [rbp-0x4],0x0
  4005c5:       c7 45 f8 01 00 00 00    mov    DWORD PTR [rbp-0x8],0x1
  4005cc:       c7 45 f4 02 00 00 00    mov    DWORD PTR [rbp-0xc],0x2
  4005d3:       c7 45 f0 03 00 00 00    mov    DWORD PTR [rbp-0x10],0x3
  4005da:       c7 45 ec 04 00 00 00    mov    DWORD PTR [rbp-0x14],0x4
  4005e1:       c7 45 e8 05 00 00 00    mov    DWORD PTR [rbp-0x18],0x5
  4005e8:       c7 45 e4 06 00 00 00    mov    DWORD PTR [rbp-0x1c],0x6
  4005ef:       c7 45 e0 07 00 00 00    mov    DWORD PTR [rbp-0x20],0x7
  4005f6:       e8 02 ff ff ff          call   4004fd <f_test>
  4005fb:       b8 00 00 00 00          mov    eax,0x0
  400600:       c9                      leave
  400601:       c3                      ret