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talk-2019-10-OOPSLA19
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Fix moving boxes in Example slide (§2)

This commit is contained in:
Théophile Bastian 2018-11-06 12:52:05 +01:00
parent 31587ff8bb
commit f0d2f6bca5
1 changed files with 54 additions and 35 deletions
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89
slides.tex
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@ -345,14 +345,7 @@ $1 = 84
\newcommand{\tblhl}{\rowcolor{Tan}}
\begin{frame}{Example}
\begin{table}
\ttfamily\large
\begin{tabularx}{0.9\linewidth}{
l
b
>{\columncolor{SkyBlue}}s
>{\columncolor{SkyBlue}}s
}
\newcommand{\firsttblrows}{
\tblrowval{\hspace{-2ex}<{\bf foo}>:}{}{\textbf{CFA}}{\textbf{ra}}
\rowonly<3>{\tblhl{}} \tblrowval{push}{\%r15}{rsp+8}{c-8}
\rowonly<4>{\tblhl{}} \tblrowval{push}{\%r14}{rsp+16}{c-8}
@ -363,36 +356,62 @@ $1 = 84
\tblrowval{push}{\%rbx}{rsp+48}{c-8}
\tblrowval{sub}{\$0x68,\%rsp}{rsp+56}{c-8}
\rowonly<9>{\tblhl{}} \tblrowval{cmp}{\$0x1,\%edi}{rsp+160}{c-8}%
\only<-8>{%
}
\only<-8>{
\begin{table}
\ttfamily\large
\begin{tabularx}{0.9\linewidth}{
l
b
>{\columncolor{SkyBlue}}s
>{\columncolor{SkyBlue}}s
}
\firsttblrows{}%
\tblrowval{add}{\$0x68,\%rsp}{rsp+160}{c-8}
\tblrowval{pop}{\%rbx}{rsp+56}{c-8}
\tblrowval{pop}{\%rbp}{rsp+48}{c-8}}
\end{tabularx}
\end{table}
\only<-8> {
\only<3>{\blknote{Upon function call, \alert{ra = *(\reg{rsp})} (ABI)}}
\only<4>{\blknote{\texttt{push} decreases \reg{rsp} by 8: %
\alert{ra = *(\reg{rsp} + 8)}}}
\only<5>{\blknote{and again: %
\alert{ra = *(\reg{rsp} + 16)}}}
\only<6>{\blknote{This \texttt{mov} leaves \reg{rsp} untouched: %
\alert{ra = *(\reg{rsp} + 16)}}}
\only<7>{\blknote{The unwinding table can actually be seen as\\
an \alert{abstract interpretation} of the code\ldots}}
\only<8>{\blknote{\ldots and thus, for a given run, be
\alert{re-computed for verification}}}
\tblrowval{pop}{\%rbp}{rsp+48}{c-8}
\end{tabularx}
\end{table}
\blknote{
\centering
\begin{overlayarea}{0.9\textwidth}{4.8ex}
\only<3>{Upon function call, \alert{ra = *(\reg{rsp})} (ABI)}
\only<4>{\texttt{push} decreases \reg{rsp} by 8: %
\alert{ra = *(\reg{rsp} + 8)}}
\only<5>{and again: %
\alert{ra = *(\reg{rsp} + 16)}}
\only<6>{This \texttt{mov} leaves \reg{rsp} untouched: %
\alert{ra = *(\reg{rsp} + 16)}}
\only<7>{The unwinding table can actually be seen as\\
an \alert{abstract interpretation} of the code\ldots}
\only<8>{\ldots and thus, for a given run, be
\alert{re-computed for verification}}
\end{overlayarea}
}
}
\only<9->{
\begin{table}
\ttfamily\large
\begin{tabularx}{0.9\linewidth}{
l
b
>{\columncolor{SkyBlue}}s
>{\columncolor{SkyBlue}}s
}
\firsttblrows{}%
\end{tabularx}
\end{table}
\vspace{-0.8em}
\only<9>{\blklnote{If, within an execution,
\begin{itemize}
\item ra = \texttt{*(0xFFFF1098)}
\item \reg{rsp} = \texttt{0xFFFF1000}
\end{itemize}
We can \alert{evaluate both expressions} and \alert{compare}
}}
}
\only<9-> {
\vspace{-2em}
\only<9>{\blklnote{If, within an execution,
\begin{itemize}
\item ra = \texttt{*(0xFFFF1098)}
\item \reg{rsp} = \texttt{0xFFFF1000}
\end{itemize}
We can \alert{evaluate both expressions} and \alert{compare}
}}
}
\end{frame}
\begin{frame}{Dynamic validation}