Type-UJ Immediate Bit Gather Scatter

type-uj-imm-bit-gather-scatter.tex

\documentclass{report}
\usepackage[letterpaper, portrait, margin=0.5in]{geometry}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\begin{document}

\bf{Type-UJ}

\begin{tikzpicture}[fill=blue!20,scale=0.5]
\begin{scope}[every node/.style={font=\scriptsize}]

% insn imm bit segment backgrounds
\fill [black!40] (0,-1)  rectangle (1,-2);
\fill [black!30] (1,-1)  rectangle (11,-2);
\fill [black!20] (11,-1) rectangle (12,-2);
\fill [black!10] (12,-1) rectangle (20,-2);

% insn imm bit segment borders
\draw (0,-1)  rectangle (1,-2);
\draw (1,-1)  rectangle (11,-2);
\draw (11,-1) rectangle (12,-2);
\draw (12,-1) rectangle (20,-2);
\draw (20,-1) rectangle (25,-2);
\draw (25,-1) rectangle (32,-2);

% insn imm bit segment labels
\node (insn_imm20) at (10  ,-0.5) {$imm[20|10:1|11|19:12]$};
\node (insn_rd)    at (22.5,-0.5) {$rd$};
\node (insn_op)    at (28.5,-0.5) {$opcode$};

% insn imm bit segment bits
\node (insn_31)    at (0.5 ,-1.5) {$31$};
\node (insn_30)    at (1.5 ,-1.5) {$30$};
\node (insn_21)    at (10.5,-1.5) {$21$};
\node (insn_20)    at (11.5,-1.5) {$20$};
\node (insn_19)    at (12.5,-1.5) {$19$};
\node (insn_12)    at (19.5,-1.5) {$12$};
\node (insn_11)    at (20.5,-1.5) {$11$};
\node (insn_7)     at (24.5,-1.5) {$7$};
\node (insn_6)     at (25.5,-1.5) {$6$};
\node (insn_0)     at (31.5,-1.5) {$0$};

% insn imm bit segment nodes
\node (insn_seg_31)    at (0.5 ,-2) {};
\node (insn_seg_30_21) at (6   ,-2) {};
\node (insn_seg_20)    at (11.5,-2) {};
\node (insn_seg_19_12) at (16  ,-2) {};
\node (insn_seg_11_7)  at (22.5,-2) {};
\node (insn_seg_6_0)   at (28.5,-2) {};

% decode imm bit segment backgrounds
\fill [black!40] (11,-6) rectangle (12,-7);
\fill [black!10] (12,-6) rectangle (20,-7);
\fill [black!20] (20,-6) rectangle (21,-7);
\fill [black!30] (21,-6) rectangle (31,-7);

% decode imm bit segment borders
\draw (11,-6) rectangle (12,-7);
\draw (12,-6) rectangle (20,-7);
\draw (20,-6) rectangle (21,-7);
\draw (21,-6) rectangle (31,-7);
\draw (31,-6) rectangle (32,-7);

% decode imm bit segment labels
\node (imm_20)    at (21.5,-7.5) {$offset21$};

% decode imm bit segment bits
\node (imm_20)    at (11.5,-6.5) {$20$};
\node (imm_19)    at (12.5,-6.5) {$19$};
\node (imm_12)    at (19.5,-6.5) {$12$};
\node (imm_11)    at (20.5,-6.5) {$11$};
\node (imm_10)    at (21.5,-6.5) {$10$};
\node (imm_1)     at (30.5,-6.5) {$1$};
\node (imm_0)     at (31.5,-6.5) {$0$};

% decode imm bit segment nodes
\node (imm_seg_20)    at (11.5,-6) {};
\node (imm_seg_19_12) at (16  ,-6) {};
\node (imm_seg_11)    at (20.5,-6) {};
\node (imm_seg_10_1)  at (27  ,-6) {};
\node (imm_seg_0)     at (31.5,-6) {};

% insn imm decode gather scatter edges
\draw[->, black!50] (insn_seg_31.south)    .. controls +(0,-0.40) and +(0,1.00) .. (imm_seg_20.north);
\draw[->, black!50] (insn_seg_30_21.south) .. controls +(0,-0.50) and +(0,0.80) .. (imm_seg_10_1.north);
\draw[->, black!50] (insn_seg_20.south)    .. controls +(0,-0.80) and +(0,0.60) .. (imm_seg_11.north);
\draw[->, black!50] (insn_seg_19_12.south) .. controls +(0,-1.00) and +(0,0.40) .. (imm_seg_19_12.north);

\end{scope}
\end{tikzpicture}

\end{document}