CS301 – Fall 2001

Prof. Hartman

Homework #9

Due Friday, December 7th^th by 5:00 pm

Assemble the following instructions by hand. You may check your work with the assembler (well, #6 may be tricky), but I expect to see annotated bits in the ModR/M byte and SIB byte if they are needed. (That is, explain in a couple of words why the first two bits are 11, for example).

1. popa
2. add eax,ebx
3. mov dword [esp], 12
4. dec byte [edx + 4*esi + 0FACEh]
5. inc bx
6. jne label ;label: is 9 bytes before the end of this instruction
7. fmul st3
8. rcr al,cl
9. sar dword [ebx + 2*esi],2
10. leave