TheCloud/rvalp
1
0
Fork 0
mirror of https://github.com/johnwinans/rvalp.git synced 2025-09-27 21:22:44 -04:00
Code Issues Packages Projects Releases Wiki Activity

Mention pcrel_21/13 & describe jal w/pcrel_21

Browse Source
This commit is contained in:
John Winans 2020-03-10 11:29:20 -05:00
parent 34ff94a932
commit 4992be5473
1 changed files with 14 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
book/rv32/chapter.tex
View File

@ -5,11 +5,6 @@
\label{chapter:RV32} \label{chapter:RV32}
\index{RV32} \index{RV32}
\section{Introduction}
{\em XXX NOTE: This is a first draft of what is being detailed in the previous chapter}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\section{Conventions and Terminology} \section{Conventions and Terminology}
@ -206,6 +201,19 @@ The address of the current instruction plus a numeric offset.
The address of the current instruction minus a numeric offset. The address of the current instruction minus a numeric offset.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\subsection{pcrel\_13}
An address that is within $[-4096..4095]$ of the current instruction location.
These addresses are typically expressed in assembly source code by using labels.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\subsection{pcrel\_21}
An address that is within $[-1048576..1048575]$ of the current instruction
location.
These addresses are typically expressed in assembly source code by using labels.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\subsection{pc} \subsection{pc}
@ -454,7 +462,7 @@ capable of expressing a wider range of target addresses than the 20-bit
imm value alone. imm value alone.
\begin{itemize} \begin{itemize}
\item\instructionHeader{jal\ \ \ rd,imm} \item\instructionHeader{jal\ \ \ rd,pcrel\_21}
\label{insn:jal} \label{insn:jal}
Set register \verb@rd@ to the address of the next instruction that would Set register \verb@rd@ to the address of the next instruction that would