Assembly

Assembly language (asm) programming questions. BE SURE TO ALSO TAG with the processor and/or instruction set you're using, as well as the assembler. WARNING: For .NET assemblies, use the tag [.net-assembly] instead. For Java ASM, use the tag [java-bytecode-asm] instead.

58 votes
16 answers
653 views
Is it possible to "decompile" a Windows .exe? Or at least view the Assembly?

A friend of mine downloaded some malware from Facebook, and I'm curious to see what it does without infec

avatar
Rudy
0 1 0 9
asked 07 September, 2021
64 votes
17 answers
1.4K views
What's the purpose of the LEA instruction?

For me, it just seems like a funky MOV. What's its purpose and when should I use it?

avatar
Vi
0 1 0 9
asked 07 September, 2021
58 votes
12 answers
924 views
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?

I am doing some numerical optimization on a scientific application. One thing I noticed is that GCC will optim

avatar
Venice
0 1 0 9
asked 07 September, 2021