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Add integer shifts and fix code template errors for mul/div/mod
One needs to remove stuff from the stack after putting it there. Actually do
that in the code output for multiplication, division, and modulus.
Add integer shifting code output which is optimized for constant shift
counts but calls a routine for non-constant shift counts. Shifting by a
negative amount is a no-op. Shifting by more than the size of an integer
results in 0 (for left shifts) or -1 (for right shifts). Both negative shift
counts and shift counts larger than the base type are undefined in the C
standard so this behaviour is allowed.
author | William Astle <lost@l-w.ca> |
---|---|
date | Sat, 26 Oct 2019 22:01:55 -0600 |
parents | 52af0aa54fe5 |
children | 1faf14de9d04 |
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >LW Tool Chain</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="NEXT" TITLE="Introduction" HREF="c13.html"></HEAD ><BODY CLASS="BOOK" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="BOOK" ><A NAME="AEN1" ></A ><DIV CLASS="TITLEPAGE" ><H1 CLASS="TITLE" ><A NAME="AEN2" >LW Tool Chain</A ></H1 ><H3 CLASS="AUTHOR" ><A NAME="AEN4" ></A >William Astle</H3 ><H3 CLASS="AUTHOR" ><A NAME="AEN7" ></A >LWTools Contributors </H3 ><P CLASS="COPYRIGHT" >Copyright © 2009-2015 William Astle and LWTools contributors</P ><HR></DIV ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT >1. <A HREF="c13.html" >Introduction</A ></DT ><DD ><DL ><DT >1.1. <A HREF="c13.html#AEN16" >History</A ></DT ></DL ></DD ><DT >2. <A HREF="c21.html" >Output Formats</A ></DT ><DD ><DL ><DT >2.1. <A HREF="c21.html#AEN24" >Raw Binaries</A ></DT ><DT >2.2. <A HREF="x27.html" >DECB Binaries</A ></DT ><DT >2.3. <A HREF="x32.html" >ASCII Hexadecimal</A ></DT ><DT >2.4. <A HREF="x36.html" >Motorola S-Record</A ></DT ><DT >2.5. <A HREF="x41.html" >Intel Hex</A ></DT ><DT >2.6. <A HREF="x46.html" >OS9 Modules</A ></DT ><DT >2.7. <A HREF="x54.html" >Object Files</A ></DT ></DL ></DD ><DT >3. <A HREF="c62.html" >LWASM</A ></DT ><DD ><DL ><DT >3.1. <A HREF="c62.html#AEN65" >Command Line Options</A ></DT ><DT >3.2. <A HREF="x229.html" >Dialects</A ></DT ><DT >3.3. <A HREF="x238.html" >Source Format</A ></DT ><DT >3.4. <A HREF="x248.html" >Symbols</A ></DT ><DT >3.5. <A HREF="x253.html" >Numbers and Expressions</A ></DT ><DT >3.6. <A HREF="x261.html" >Assembler Directives</A ></DT ><DD ><DL ><DT >3.6.1. <A HREF="x261.html#AEN264" >Data Directives</A ></DT ><DT >3.6.2. <A HREF="x261.html#AEN375" >Address Definition</A ></DT ><DT >3.6.3. <A HREF="x261.html#AEN426" >Conditional Assembly</A ></DT ><DT >3.6.4. <A HREF="x261.html#AEN497" >OS9 Target Directives</A ></DT ><DT >3.6.5. <A HREF="x261.html#AEN522" >Miscelaneous Directives</A ></DT ></DL ></DD ><DT >3.7. <A HREF="x562.html" >Macros</A ></DT ><DT >3.8. <A HREF="x585.html" >Structures</A ></DT ><DT >3.9. <A HREF="x606.html" >Object Files and Sections</A ></DT ><DT >3.10. <A HREF="x670.html" >Assembler Modes and Pragmas</A ></DT ><DT >3.11. <A HREF="x816.html" >Convenience Instructions</A ></DT ><DT >3.12. <A HREF="x821.html" >Cycle Counts</A ></DT ></DL ></DD ><DT >4. <A HREF="c827.html" >LWLINK</A ></DT ><DD ><DL ><DT >4.1. <A HREF="c827.html#AEN830" >Command Line Options</A ></DT ><DT >4.2. <A HREF="x927.html" >Linker Operation</A ></DT ><DT >4.3. <A HREF="x941.html" >Linking Scripts</A ></DT ><DT >4.4. <A HREF="x1007.html" >Format Specific Linking Notes</A ></DT ><DD ><DL ><DT >4.4.1. <A HREF="x1007.html#AEN1010" >OS9 Modules</A ></DT ></DL ></DD ></DL ></DD ><DT >5. <A HREF="c1022.html" >Libraries and LWAR</A ></DT ><DD ><DL ><DT >5.1. <A HREF="c1022.html#AEN1026" >Command Line Options</A ></DT ></DL ></DD ><DT >6. <A HREF="c1084.html" >Object Files</A ></DT ></DL ></DIV ><DIV CLASS="LOT" ><DL CLASS="LOT" ><DT ><B >List of Tables</B ></DT ><DT >6-1. <A HREF="c1084.html#AEN1109" >Object File Term Types</A ></DT ><DT >6-2. <A HREF="c1084.html#AEN1139" >Object File Operator Numbers</A ></DT ></DL ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" > </TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="c13.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" > </TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Introduction</TD ></TR ></TABLE ></DIV ></BODY ></HTML >