Bitwise and Shift Instructions
Master bit manipulation in x86: AND, OR, XOR, NOT, and the shift and rotate instructions used for masking, flag toggling, and fast multiplication.
Why Bit Operations?
Low-level code constantly manipulates individual bits: setting flags, packing fields, masking, and fast math. x86 provides dedicated bitwise and shift instructions.
AND for Masking
AND keeps only the bits set in both operands, the standard way to mask out unwanted bits.
and eax, 0x0F ; keep low nibbleAll lessons in this course
- Data Movement Instructions (MOV, PUSH, POP)
- Arithmetic and Logic Operations
- Conditional Jumps and Loops
- Bitwise and Shift Instructions