\documentclass[10pt,a4paper]{article}

% Packages
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\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
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%\usepackage[utf8x]{inputenc}    % For unicode character support
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\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{Syshella}
\pdfinfo{
  /Title (arm-assembly.pdf)
  /Creator (Cheatography)
  /Author (Syshella)
  /Subject (ARM Assembly Cheat Sheet)
}

% Lengths and widths
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% This two commands together give roughly
% the right line height in the tables
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% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
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\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{ARM Assembly Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Syshella} via \textcolor{DarkBackground}{\uline{cheatography.com/128892/cs/26951/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Syshella \\
  \uline{cheatography.com/syshella} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 10th March, 2021.\\
   Updated 10th March, 2021.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Code Layout}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{.data \newline @variables  \newline  \newline .text \newline .global main \newline @code} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{@ - Comments}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.19002 cm} x{1.55618 cm} x{1.8308 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Data Types}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Type}} & {\bf{Mnemonic}} & {\bf{Bytes size}} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Word &  & 4 \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
Half word & h & 2 \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
Byte & b & 1 \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.54924 cm} x{1.32733 cm} x{2.70043 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Registers}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{\#}} & {\bf{Purpose}} & {\bf{Description}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
R0 - R12 & General Purpose & Stores temporary values, pointers... \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
R13 & SP - Stack Pointer & Top of the stack. Allocate space to the stack by substracting the value in bytes that we want to allocate from the stack pointer. \tn 
% Row Count 10 (+ 6)
% Row 3
\SetRowColor{white}
R14 & LR - Link Register & When a function call is made, LR gets pdated with a memory address referencing the next instruction where the function was initiated from \tn 
% Row Count 16 (+ 6)
% Row 4
\SetRowColor{LightBackground}
R15 & PC - Program Counter & Automatically incremented by the size of the instruction executed \tn 
% Row Count 19 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.64078 cm} x{0.86963 cm} x{3.06659 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{CPSR - Current Program Status Register}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Flag}} & {\bf{Meaning}} & {\bf{Enable if result of the instruction yields a...}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
N & \seqsplit{Negative} & Negative number \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
Z & Zero & Zero value \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
C & Carry & Value that requires a 33rd bit to be fully represented \tn 
% Row Count 8 (+ 3)
% Row 4
\SetRowColor{LightBackground}
V & \seqsplit{Overflow} & Value that cannot be represented in 32 bit two's complement \tn 
% Row Count 11 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.89586 cm} x{4.08114 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Flexible operand}}  \tn
% Row 0
\SetRowColor{LightBackground}
\#123 & Inmediate value \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Rx & Register x \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
Rx, LSL n & Register x with logical shift left by n bits \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
Rx, LSR n & Register x with logical shift right by n bits \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Syntax}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{MNEMONIC\{S\}\{condition\} \{Rd\}, Operand1, Operand2}}% Row Count 2 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.14471 cm} x{3.83229 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Mnemonics}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{MNEMONIC}} & {\bf{Description}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\{S\} & An optional suffix. If S is specified, the condition flags are updated on the result of the operation \tn 
% Row Count 6 (+ 4)
% Row 2
\SetRowColor{LightBackground}
\{condition\} & Condition that is needed to be met in order for the instruction to be executed \tn 
% Row Count 9 (+ 3)
% Row 3
\SetRowColor{white}
\{Rd\} & Register destination for storing the result of the instruction \tn 
% Row Count 12 (+ 3)
% Row 4
\SetRowColor{LightBackground}
Operand1 & First operand. Either a register or an inmediate value \tn 
% Row Count 14 (+ 2)
% Row 5
\SetRowColor{white}
Operand2 & Second (flexible) operand. Either an inmediate value (number) or a register with an optional shift \tn 
% Row Count 18 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{\{\} - Optional}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.69218 cm} x{3.28482 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Common Instructions}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Instruction}} & {\bf{Description}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
MOV & Move data \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
MVN & Move and negate \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
ADD & Addition \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
SUB & Substraction \tn 
% Row Count 6 (+ 1)
% Row 5
\SetRowColor{white}
MUL & Multiplication \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
LSL & Logical Shift Left \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
LSR & Logical Shift Right \tn 
% Row Count 9 (+ 1)
% Row 8
\SetRowColor{LightBackground}
ASR & Arithmetic Shift Right \tn 
% Row Count 10 (+ 1)
% Row 9
\SetRowColor{white}
CMP & Compare \tn 
% Row Count 11 (+ 1)
% Row 10
\SetRowColor{LightBackground}
CMN & Compare and negate \tn 
% Row Count 12 (+ 1)
% Row 11
\SetRowColor{white}
AND & Bitwise AND \tn 
% Row Count 13 (+ 1)
% Row 12
\SetRowColor{LightBackground}
ORR & Bitwise OR \tn 
% Row Count 14 (+ 1)
% Row 13
\SetRowColor{white}
EOR & Bitwise XOR \tn 
% Row Count 15 (+ 1)
% Row 14
\SetRowColor{LightBackground}
LDR & Load \tn 
% Row Count 16 (+ 1)
% Row 15
\SetRowColor{white}
STR & Store \tn 
% Row Count 17 (+ 1)
% Row 16
\SetRowColor{LightBackground}
LDM & Load Multiple \tn 
% Row Count 18 (+ 1)
% Row 17
\SetRowColor{white}
STM & Store Multiple \tn 
% Row Count 19 (+ 1)
% Row 18
\SetRowColor{LightBackground}
B & Branch \tn 
% Row Count 20 (+ 1)
% Row 19
\SetRowColor{white}
BL & Branch with Link \tn 
% Row Count 21 (+ 1)
% Row 20
\SetRowColor{LightBackground}
BX & Branch and eXchange \tn 
% Row Count 22 (+ 1)
% Row 21
\SetRowColor{white}
BLX & Branch with Link and eXchange \tn 
% Row Count 24 (+ 2)
% Row 22
\SetRowColor{LightBackground}
BIC & Bit Clear \tn 
% Row Count 25 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Address modes}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Offset} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}`str r2, {[}r1, \#2{]}`\{\{nl\}\}Store the value found in R2 to the memory address found in R1 plus 2. Base register unmodified.} \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Pre-indexed} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}`str r2, {[}r1, \#4{]}!`\{\{nl\}\} Store the value found in R2 to the memory address found in R1 plus 4. Base register (R1) modified: R1= R1+4} \tn 
% Row Count 8 (+ 4)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Post-indexed} \tn 
\mymulticolumn{1}{x{5.377cm}}{\hspace*{6 px}\rule{2px}{6px}\hspace*{6 px}`ldr r3, {[}r1{]}, r2, LSL\#2`\{\{nl\}\} Load the value at memory address found in R1 to the register R3. Then modify base register: R1 = R1+R2\textless{}\textless{}2} \tn 
% Row Count 12 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Syntax: \newline `STR Ra, {[}Rb, imm{]}\{\{nl\}\}LDR Ra, {[}Rc, imm{]}` \newline If there is a !, its prefix address mode\{\{nl\}\}`ldr   r3, {[}r1, \#4{]}! \{\{nl\}\}ldr   r3, {[}r1, r2{]}!\{\{nl\}\}ldr   r3, {[}r1, r2, LSL\#2{]}!` \newline If the base register is in brackets by itself, it's postfix address mode \newline `ldr   r3, {[}r1{]}, \#4\{\{nl\}\}ldr   r3, {[}r1{]}, r2\{\{nl\}\}ldr   r3, {[}r1{]}, r2, LSL\#2` \newline Anything else, offset address mode: \newline `ldr   r3, {[}r1, \#4{]}\{\{nl\}\}ldr   r3, {[}r1, r2{]}\{\{nl\}\}ldr   r3, {[}r1, r2, LSL\#2{]}`}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.19002 cm} x{2.38004 cm} x{1.00694 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Conditionals}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Mnemonic}} & {\bf{Description}} & {\bf{Flags}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
EQ & Equals & Z=1 \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
NE & Non equals & Z=0 \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
HI & Higher than (NS) & C=1 \& Z=0 \tn 
% Row Count 6 (+ 2)
% Row 4
\SetRowColor{LightBackground}
LS & Less than (NS) & C=0 | Z=1 \tn 
% Row Count 8 (+ 2)
% Row 5
\SetRowColor{white}
GE & Greater or equals (WS) & N=V \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
LT & Less than (WS) & N!=V \tn 
% Row Count 11 (+ 1)
% Row 7
\SetRowColor{white}
GT & Greater than (WS) & Z=0 \& N=V \tn 
% Row Count 13 (+ 2)
% Row 8
\SetRowColor{LightBackground}
LE & Less or equals than (WS) & Z=1 | N!=V \tn 
% Row Count 15 (+ 2)
% Row 9
\SetRowColor{white}
(empty) & Always (non conditional) &  \tn 
% Row Count 17 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{5.377cm}}{NS - No sign \newline WS - With sign \newline  \newline Most of intructions can be executed using conditionals. Ie: \newline `movle r2, r1}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}