Weird SPSR behaviour

I was trying to write a register context saving/restoring when I came across a weird behaviour.

My code (sorry, tried to format tens of times, but the editor WANTS to make asm a table):

When the exception is returned from, the calling function:

    msg = "returned from SVC\r\n";

    serial_io.put_string(msg, util_str_len(msg)+1);

    asm volatile (

    );

    msg = "cpsr = ";

    serial_io.put_string(msg, util_str_len(msg)+1);

    util_word_to_hex(scratchpad, tmp1);

    serial_io.put_string(scratchpad, 9);

    serial_io.put_string("\r\n", 3);

outputs "returned from SVC" and "cpsr = 60000013".

Why the "00000002"? the barriers don't seem to have any effect.