Hanoi

多了一个login函数,其实功能相似,题目提示密码是8-16位,接下来继续看关键函数test_password_valid

4454 <test_password_valid>
4454: 0412 push r4
4456: 0441 mov sp, r4
4458: 2453 incd r4
445a: 2183 decd sp
445c: c443 fcff mov.b #0x0, -0x4(r4)
4460: 3e40 fcff mov #0xfffc, r14
4464: 0e54 add r4, r14
4466: 0e12 push r14
4468: 0f12 push r15
446a: 3012 7d00 push #0x7d
446e: b012 7a45 call #0x457a <INT>
4472: 5f44 fcff mov.b -0x4(r4), r15
4476: 8f11 sxt r15
4478: 3152 add #0x8, sp
447a: 3441 pop r4
447c: 3041 ret