<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML ><HEAD ><TITLE >MIPS Example</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Linux Assembly HOWTO" HREF="index.html"><LINK REL="UP" TITLE="Quick start" HREF="quickstart.html"><LINK REL="PREVIOUS" TITLE="Building an executable" HREF="build.html"><LINK REL="NEXT" TITLE="Resources" HREF="resources.html"></HEAD ><BODY CLASS="SECTION" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Linux Assembly HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="build.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Chapter 6. Quick start</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="resources.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECTION" ><H1 CLASS="SECTION" ><A NAME="AEN892" ></A >6.4. MIPS Example</H1 ><P >As a demonstration of a fact that there's a universe other than x86, here comes an example program for MIPS by Spencer Parkin. BTW, if you've got here, you may also want to see <A HREF="http://www.cuillin.demon.co.uk/nazz/trivia/hw/hw_assembler.html" TARGET="_top" >A Collection of Assembler Hello World Programs</A >. </P ><P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" WIDTH="100%" ><TR ><TD ><FONT COLOR="#000000" ><PRE CLASS="PROGRAMLISTING" ># hello.S by Spencer T. Parkin # This is my first MIPS-RISC assembly program! # To compile this program type: # > gcc -o hello hello.S -non_shared # This program compiles without errors or warnings # on a PlayStation2 MIPS R5900 (EE Core). # EE stands for Emotion Engine...lame! # The -non_shared option tells gcc that we`re # not interrested in compiling relocatable code. # If we were, we would need to follow the PIC- # ABI calling conventions and other protocols. #include <asm/regdef.h> // ...for human readable register names #include <asm/unistd.h> // ...for system serivices .rdata # begin read-only data segment .align 2 # because of the way memory is built hello: .asciz "Hello, world!\n" # a null terminated string .align 4 # because of the way memory is built length: .word . - hello # length = IC - (hello-addr) .text # begin code segment .globl main # for gcc/ld linking .ent main # for gdb debugging info. main: # We must specify -non_shared to gcc or we`ll need these 3 lines that fallow. # .set noreorder # disable instruction reordering # .cpload t9 # PIC ABI crap (function prologue) # .set reorder # re-enable instruction reordering move a0,$0 # load stdout fd la a1,hello # load string address lw a2,length # load string length li v0,__NR_write # specify system write service syscall # call the kernel (write string) li v0,0 # load return code j ra # return to caller .end main # for dgb debugging info. # That`s all folks!</PRE ></FONT ></TD ></TR ></TABLE ></P ></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" ><A HREF="build.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="resources.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Building an executable</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="quickstart.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Resources</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
