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[SPCA] more assembly

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RobinB27
2026-01-10 19:57:50 +01:00
parent 59f4151a3e
commit 35c06e4edf
6 changed files with 37 additions and 2 deletions
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semester3/spca/parts/00_asm/03_operations.tex
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\subsection{Operations}
Assembly operations include performing arithmetic or logic functions on registers or memory data,
transferring data between memory and registers and transferring control (conditional or unconditional jumps)
transferring data between memory and registers and transferring control (conditional or unconditional jumps).\\
Note that \verb|move| instructions \textit{cannot} move data directly from memory to memory.
Most of the memory-related instructions in \texttt{x86} assembly have the format
\mint{asm}|movq dest, src|
whereas arithmetic / logic operations have the format inversed (below \texttt{X} is to be replced with size postfix).
Arithmetic / logic operations have the format inversed (below \texttt{X} is to be replced with size postfix).
\begin{tables}{lll}{Mnemonic & Format & Computation}
\texttt{addl} & \texttt{Src, Dest} & \texttt{Dest} $\gets$ \texttt{Dest + Src} \\
\texttt{subX} & \texttt{Src, Dest} & \texttt{Dest} $\gets$ \texttt{Dest - Src} \\