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1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
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2 <HTML
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3 ><HEAD
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4 ><TITLE
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5 >OS9 Modules</TITLE
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6 ><META
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7 NAME="GENERATOR"
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8 CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
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9 REL="HOME"
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10 TITLE="LW Tool Chain"
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11 HREF="index.html"><LINK
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12 REL="UP"
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13 TITLE="Output Formats"
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14 HREF="c18.html"><LINK
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15 REL="PREVIOUS"
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16 TITLE="DECB Binaries"
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17 HREF="x24.html"><LINK
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18 REL="NEXT"
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19 TITLE="Object Files"
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20 HREF="x35.html"></HEAD
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21 ><BODY
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22 CLASS="SECTION"
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23 BGCOLOR="#FFFFFF"
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24 TEXT="#000000"
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25 LINK="#0000FF"
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26 VLINK="#840084"
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27 ALINK="#0000FF"
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28 ><DIV
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29 CLASS="NAVHEADER"
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30 ><TABLE
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31 SUMMARY="Header navigation table"
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32 WIDTH="100%"
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33 BORDER="0"
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34 CELLPADDING="0"
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35 CELLSPACING="0"
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36 ><TR
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37 ><TH
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38 COLSPAN="3"
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39 ALIGN="center"
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40 >LW Tool Chain</TH
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41 ></TR
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42 ><TR
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43 ><TD
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44 WIDTH="10%"
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45 ALIGN="left"
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46 VALIGN="bottom"
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47 ><A
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48 HREF="x24.html"
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49 ACCESSKEY="P"
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50 >Prev</A
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51 ></TD
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52 ><TD
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53 WIDTH="80%"
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54 ALIGN="center"
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55 VALIGN="bottom"
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56 >Chapter 2. Output Formats</TD
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57 ><TD
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58 WIDTH="10%"
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59 ALIGN="right"
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60 VALIGN="bottom"
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61 ><A
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62 HREF="x35.html"
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63 ACCESSKEY="N"
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64 >Next</A
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65 ></TD
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66 ></TR
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67 ></TABLE
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68 ><HR
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69 ALIGN="LEFT"
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70 WIDTH="100%"></DIV
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71 ><DIV
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72 CLASS="SECTION"
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73 ><H1
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74 CLASS="SECTION"
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75 ><A
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76 NAME="AEN29"
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77 >2.3. OS9 Modules</A
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78 ></H1
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79 ><P
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80 > Since version 2.5, LWASM is able to generate OS9 modules. The syntax is
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81 basically the same as for other assemblers. A module starts with the MOD
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82 directive and ends with the EMOD directive. The OS9 directive is provided
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83 as a shortcut for writing system calls. </P
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84 ><P
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85 > LWASM does NOT provide an OS9Defs file. You must provide your own. Also note
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86 that the common practice of using "ifp1" around the inclusion of the OS9Defs
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87 file is discouraged as it is pointless and can lead to unintentional
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88 problems and phasing errors. Because LWASM reads each file exactly once,
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89 there is no benefit to restricting the inclusion to the first assembly pass. </P
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90 ><P
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91 > It is also critical to understand that unlike many OS9 assemblers, LWASM
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92 does NOT maintain a separate data address counter. Thus, you must define
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93 all your data offsets and so on outside of the mod/emod segment. It is,
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94 therefore, likely that source code targeted at other assemblers will require
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95 edits to build correctly. </P
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96 ><P
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97 > LWLINK does not, yet, have the ability to create OS9 modules from object
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98 files. </P
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99 ></DIV
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100 ><DIV
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101 CLASS="NAVFOOTER"
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102 ><HR
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103 ALIGN="LEFT"
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104 WIDTH="100%"><TABLE
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105 SUMMARY="Footer navigation table"
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107 BORDER="0"
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109 CELLSPACING="0"
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110 ><TR
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111 ><TD
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112 WIDTH="33%"
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113 ALIGN="left"
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114 VALIGN="top"
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115 ><A
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116 HREF="x24.html"
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117 ACCESSKEY="P"
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118 >Prev</A
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119 ></TD
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120 ><TD
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121 WIDTH="34%"
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122 ALIGN="center"
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123 VALIGN="top"
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124 ><A
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125 HREF="index.html"
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126 ACCESSKEY="H"
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127 >Home</A
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128 ></TD
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129 ><TD
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130 WIDTH="33%"
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131 ALIGN="right"
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132 VALIGN="top"
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133 ><A
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135 ACCESSKEY="N"
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136 >Next</A
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137 ></TD
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138 ></TR
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139 ><TR
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140 ><TD
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141 WIDTH="33%"
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142 ALIGN="left"
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143 VALIGN="top"
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144 >DECB Binaries</TD
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145 ><TD
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146 WIDTH="34%"
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147 ALIGN="center"
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148 VALIGN="top"
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149 ><A
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150 HREF="c18.html"
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151 ACCESSKEY="U"
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152 >Up</A
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153 ></TD
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154 ><TD
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155 WIDTH="33%"
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156 ALIGN="right"
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157 VALIGN="top"
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158 >Object Files</TD
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159 ></TR
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160 ></TABLE
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161 ></DIV
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162 ></BODY
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163 ></HTML
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164 > |
