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133 lines
4.8 KiB
HTML
133 lines
4.8 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1992-2019 Free Software Foundation, Inc.
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Contributed by Cygnus Support. Written by Julia Menapace, Jim Kingdon,
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and David MacKenzie.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with no
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Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
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Texts. A copy of the license is included in the section entitled "GNU
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Free Documentation License". -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Assembly Code (STABS)</title>
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<meta name="description" content="Assembly Code (STABS)">
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<meta name="keywords" content="Assembly Code (STABS)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Symbol-Types-Index.html#Symbol-Types-Index" rel="index" title="Symbol Types Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Overview.html#Overview" rel="up" title="Overview">
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<link href="Program-Structure.html#Program-Structure" rel="next" title="Program Structure">
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<link href="C-Example.html#C-Example" rel="prev" title="C Example">
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</head>
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<body lang="en">
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<a name="Assembly-Code"></a>
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<div class="header">
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<p>
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Previous: <a href="C-Example.html#C-Example" accesskey="p" rel="prev">C Example</a>, Up: <a href="Overview.html#Overview" accesskey="u" rel="up">Overview</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Symbol-Types-Index.html#Symbol-Types-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="The-Simple-Example-at-the-Assembly-Level"></a>
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<h3 class="section">1.5 The Simple Example at the Assembly Level</h3>
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<p>This simple “hello world” example demonstrates several of the stab
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types used to describe C language source files.
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</p>
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<div class="example">
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<pre class="example">1 gcc2_compiled.:
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2 .stabs "/cygint/s1/users/jcm/play/",100,0,0,Ltext0
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3 .stabs "hello.c",100,0,0,Ltext0
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4 .text
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5 Ltext0:
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6 .stabs "int:t1=r1;-2147483648;2147483647;",128,0,0,0
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7 .stabs "char:t2=r2;0;127;",128,0,0,0
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8 .stabs "long int:t3=r1;-2147483648;2147483647;",128,0,0,0
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9 .stabs "unsigned int:t4=r1;0;-1;",128,0,0,0
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10 .stabs "long unsigned int:t5=r1;0;-1;",128,0,0,0
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11 .stabs "short int:t6=r1;-32768;32767;",128,0,0,0
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12 .stabs "long long int:t7=r1;0;-1;",128,0,0,0
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13 .stabs "short unsigned int:t8=r1;0;65535;",128,0,0,0
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14 .stabs "long long unsigned int:t9=r1;0;-1;",128,0,0,0
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15 .stabs "signed char:t10=r1;-128;127;",128,0,0,0
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16 .stabs "unsigned char:t11=r1;0;255;",128,0,0,0
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17 .stabs "float:t12=r1;4;0;",128,0,0,0
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18 .stabs "double:t13=r1;8;0;",128,0,0,0
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19 .stabs "long double:t14=r1;8;0;",128,0,0,0
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20 .stabs "void:t15=15",128,0,0,0
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21 .align 4
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22 LC0:
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23 .ascii "Hello, world!\12\0"
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24 .align 4
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25 .global _main
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26 .proc 1
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27 _main:
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28 .stabn 68,0,4,LM1
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29 LM1:
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30 !#PROLOGUE# 0
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31 save %sp,-136,%sp
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32 !#PROLOGUE# 1
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33 call ___main,0
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34 nop
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35 .stabn 68,0,5,LM2
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36 LM2:
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37 LBB2:
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38 sethi %hi(LC0),%o1
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39 or %o1,%lo(LC0),%o0
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40 call _printf,0
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41 nop
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42 .stabn 68,0,6,LM3
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43 LM3:
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44 LBE2:
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45 .stabn 68,0,6,LM4
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46 LM4:
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47 L1:
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48 ret
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49 restore
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50 .stabs "main:F1",36,0,0,_main
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51 .stabn 192,0,0,LBB2
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52 .stabn 224,0,0,LBE2
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</pre></div>
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</body>
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</html>
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