eh_elf sketch instead of "Compilation overview"

slides.tex

@@ -17,6 +17,7 @@
 \usepackage{multirow}
 \usepackage[many]{tcolorbox}
 \usepackage[absolute,overlay]{textpos}
+\usetikzlibrary{arrows.meta}
 
 \usepackage{texlib/my_listings}
 \usepackage{texlib/specific}
@@ -435,31 +436,52 @@ Segmentation fault.
 
 \subsection{Compilation ahead-of-time}
 
-\begin{frame}
-    \begin{itemize}
-        \item Compiled to \alert{C code}
-        \item C code then \alert{compiled to native binary} (gcc)
-            \begin{itemize}
-                \item[$\leadsto$] gcc optimisations for free
-            \end{itemize}
-        \item Compiled as \alert{separate \texttt{.so} files}, called \ehelfs{}
-            \bigskip{}
-        \item Morally a \alert{monolithic switch} on IPs
-        \item Each case contains assembly that computes a \alert{row of the
-            table}
-    \end{itemize}
-\end{frame}
-
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[shrink]
-    \lstinputlisting[language=C]{src/fib7/fib7.eh_elf_basic.c}
+    \vspace{0.5cm}
+    \begin{tikzpicture}
+        \begin{scope}[every node/.style={rectangle,thick,draw,scale=0.95}]
+            \node (dwarf) at (0, 0) {
+                \lstinputlisting[basicstyle=\tiny,numbers=none,language=]{src/dw_plt_abbr}
+            };
 
-    \pause{}
+            \only<2->{
-    \vspace{1em}
+                \node (table) at (0.5\textwidth, -0.23\textheight) {
-    \begin{center}
+                    \tiny\tt
-        The real code is optimised, but boils down to this.
+                    \begin{tabular}{
-    \end{center}
+                            >{\columncolor{YellowGreen}}l
+                            >{\columncolor{Thistle}}l
+                            l l
+                        >{\columncolor{Apricot}}l}
+                        LOC & CFA & rbx & rbp & ra \\
+                        0084950 & rsp+8 & u & u & c-8 \\
+                        0084952 & rsp+16 & u & u & c-8 \\
+                        0084954 & rsp+24 & u & u & c-8 \\
+                        0084956 & rsp+32 & u & u & c-8 \\
+                    \end{tabular}
+                };
+            }
+            \only<3->{
+                \node (csrc) at (0, -0.6\textheight) {
+                    \lstinputlisting[basicstyle=\tiny,numbers=none,language=C]{src/fib7/fib7.eh_elf_basic.c}
+                };
+                \node (ehelf) at (0.55\textwidth, -0.75\textheight) {
+                    ELF file:
+                    ``\ehelf{}''
+                };
+            }
+        \end{scope}
+
+        \begin{scope}[>={Stealth[black]},
+                every node/.style={fill=white,rectangle},
+                every path/.style={draw=black,very thick}]
+            \only<2->{\path [->] (dwarf) -| node {runtime} (table);}
+            \only<3->{
+                \path [->] (dwarf) edge node {ahead of time} (csrc);
+                \path [->] (csrc) -| node {gcc, AoT} (ehelf);
+            }
+        \end{scope}
+    \end{tikzpicture}
 \end{frame}
 
 

src/dw_plt

@@ -0,0 +1,7 @@
+30 24 34 FDE pc=004020..004040
+  DW_CFA_def_cfa_offset: 16
+  DW_CFA_advance_loc: 6 to 0000000000004026
+  DW_CFA_def_cfa_offset: 24
+  DW_CFA_advance_loc: 10 to 0000000000004030
+  DW_CFA_def_cfa_expression (DW_OP_breg7 (rsp): 8; DW_OP_breg16 (rip): 0; DW_OP_lit15; DW_OP_and; DW_OP_lit11; DW_OP_ge; DW_OP_lit3; DW_OP_shl; DW_OP_plus)
+  [...]

src/dw_plt_abbr

@@ -0,0 +1,7 @@
+30 24 34 FDE pc=004020..004040
+  DW_CFA_def_cfa_offset: 16
+  DW_CFA_advance_loc: 6 to 0000000000004026
+  DW_CFA_def_cfa_offset: 24
+  DW_CFA_advance_loc: 10 to 0000000000004030
+  DW_CFA_def_cfa_expression (DW_OP_breg7 (rsp): 8;
+    DW_OP_breg16 (rip): 0; ...)