Slide 1

•With FPO (dynamic addressing of local variables)

•

•FunctionParameters!main:

•sub esp,0x8 ; allocating room for local variables

•push 0x408110 ; address of "Enter a and b: "

call FunctionParameters!printf (00401085)

lea eax,[esp+0x4] ; address of b ([ESP + 0 + 4])

•push eax

•lea ecx,[esp+0xc] ; address of a ([ESP + 4 + 8])

•push ecx

push 0x408108 ; address of "%d %d"

call FunctionParameters!scanf (0040106e)

•mov eax,[esp+0x14] ; value of a ([ESP + 4 + 10])

•lea edx,[esp+0x10] ; address of b ([ESP + 0 + 10])

push edx

push eax

call FunctionParameters!arithmetic (00401000)

add esp,0x18 ; adjusting stack after all pushes

•test al,al ; al == 0 ?

jz FunctionParameters!main+0x48 (00401068)

mov ecx,[esp] ; address of b ([ESP + 0])

push ecx

push 0x4080fc ; address of "Result = %d"

•call FunctionParameters!printf (00401085)

add esp,0x8 ; adjust stack pointer (2 parameters)

00401068:

xor eax,eax ; return value 0

add esp,0x8 ; adjust stack pointer (local variables)

•ret