Top "Nop" questions

Assembly operation for filling space and time doing nothing.

How does a NOP sled work?

I can't find a good source that answers this question. I know that a nop sled is a technique used …

c assembly stack buffer-overflow nop
What does NOPL do in x86 system?

what is the function of NOPL in x86 machine? It feels like it doesn't do anything, but why is it …

assembly x86 nop
Processor Instruction Cycle Execution Time

My guess is that the __no_operation() intrinsic (ARM) instruction should take 1/(168 MHz) to execute, provided that each NOP executes …

execution-time stm32 cortex-m machine-instruction nop
Dummy command in windows cmd

In linux we have a makefile: $(foreach A,a b,echo $(A) &&) true It works and echos a …

windows batch-file cmd nop
Equivalent for NOP in C for Embedded?

I use KEIL to compile a program. The program uses the code asm("NOP"); Unfortunately KEIL compiler does not accept …

c embedded inline-assembly keil nop
GCC NOPs being compiled away

Venturing out of my usual VC++ realm into the world of GCC (via MINGW32). Trying to create a Windows PE …

gcc assembly nop
What does "nop dword ptr [rax+rax]" x64 assembly instruction do?

I'm trying to understand the x64 assembly optimization that is done by the compiler. I compiled a small C++ project …

visual-studio assembly x86-64 cpu-architecture nop