Reverse Engineering for Beginners

CHAPTER 17. FLOATING-POINT UNIT CHAPTER 17. FLOATING-POINT UNIT

First OllyDbg example: a=1.2 and b=3.4

Let’s load the example into OllyDbg:

Figure 17.6:OllyDbg: firstFLDis executed

Current arguments of the function:a= 1: 2 andb= 3: 4 (We can see them in the stack: two pairs of 32-bit values).b(3.4)
is already loaded inST(0). NowFCOMPis being executed. OllyDbg shows the secondFCOMPargument, which is in stack
right now.