1 cmpxchg %bl,%cl (al=22 bl=44 cl=33) 2 al!=cl so al should equal cl (Result al=33 bl=44 cl=33) 3 cmpxchg %bl,%cl (al=77 bl=55 cl=55) 4 al==cl so cl should equal bl (Result al=55 bl=55 cl=55) 5 cmpxchg %bx,%cx (ax=2222 bx=4444 cx=3333) 6 ax!=cx so ax should equal cx (Result ax=3333 bx=4444 cx=3333) 7 cmpxchg %bx,%cx (ax=7777 bx=5555 cx=5555) 8 ax==cx so cx should equal bx (Result ax=5555 bx=5555 cx=5555) 9 cmpxchg %ebx,%ecx (eax=22222222 ebx=44444444 ecx=33333333) 10 eax!=ecx so eax should equal ecx (Result eax=33333333 ebx=44444444 ecx=33333333) 11 cmpxchg %ebx,%ecx (eax=77777777 ebx=55555555 ecx=55555555) 12 eax==ecx so ecx should equal ebx (Result eax=55555555 ebx=55555555 ecx=55555555) 13 cmpxchg %rbx,%rcx (rax=222222222 rbx=444444444 rcx=333333333) 14 rax!=rcx so rax should equal rcx (Result rax=333333333 rbx=444444444 rcx=333333333) 15 cmpxchg %rbx,%rcx (rax=777777777 rbx=555555555 rcx=555555555) 16 rax==rcx so ecx should equal rbx (Result rax=555555555 rbx=555555555 rcx=555555555) 17
