Slide 1

With FPO

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FunctionParameters!arithmetic:

mov eax,[esp+0x8] ; address of b

test eax,eax ; &b == 0 ?

jnz FunctionParameters!arithmetic+0xb (0040100b)

xor al,al ; return value false (0)

•ret

•0040100b:

•mov edx,[eax] ; edx := [b] (in C: *b)

•mov ecx,[esp+0x4] ; ecx := [a]

•add edx,ecx

•inc ecx

•imul edx,ecx

•mov [eax],edx ; [b] := edx

•mov al,0x1 ; return value true (1)

•ret

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