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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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  16. <head>

  17. <meta http-equiv="Content-Type" content="text/html; charset=utf-8">

  18. <title>Standard Target Features (Debugging with GDB)</title>

  19. 

  20. <meta name="description" content="Standard Target Features (Debugging with GDB)">

  21. <meta name="keywords" content="Standard Target Features (Debugging with GDB)">

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  27. <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">

  28. <link href="Target-Descriptions.html#Target-Descriptions" rel="up" title="Target Descriptions">

  29. <link href="AArch64-Features.html#AArch64-Features" rel="next" title="AArch64 Features">

  30. <link href="Enum-Target-Types.html#Enum-Target-Types" rel="prev" title="Enum Target Types">

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  61. 

  62. <body lang="en">

  63. <a name="Standard-Target-Features"></a>

  64. <div class="header">

  65. <p>

  66. Previous: <a href="Enum-Target-Types.html#Enum-Target-Types" accesskey="p" rel="prev">Enum Target Types</a>, Up: <a href="Target-Descriptions.html#Target-Descriptions" accesskey="u" rel="up">Target Descriptions</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>

  67. </div>

  68. <hr>

  69. <a name="Standard-Target-Features-1"></a>

  70. <h3 class="section">G.5 Standard Target Features</h3>

  71. <a name="index-target-descriptions_002c-standard-features"></a>

  72. 

  73. <p>A target description must contain either no registers or all the

  74. target&rsquo;s registers.  If the description contains no registers, then

  75. <small>GDB</small> will assume a default register layout, selected based on

  76. the architecture.  If the description contains any registers, the

  77. default layout will not be used; the standard registers must be

  78. described in the target description, in such a way that <small>GDB</small>

  79. can recognize them.

  80. </p>

  81. <p>This is accomplished by giving specific names to feature elements

  82. which contain standard registers.  <small>GDB</small> will look for features

  83. with those names and verify that they contain the expected registers;

  84. if any known feature is missing required registers, or if any required

  85. feature is missing, <small>GDB</small> will reject the target

  86. description.  You can add additional registers to any of the

  87. standard features &mdash; <small>GDB</small> will display them just as if

  88. they were added to an unrecognized feature.

  89. </p>

  90. <p>This section lists the known features and their expected contents.

  91. Sample XML documents for these features are included in the

  92. <small>GDB</small> source tree, in the directory <samp>gdb/features</samp>.

  93. </p>

  94. <p>Names recognized by <small>GDB</small> should include the name of the

  95. company or organization which selected the name, and the overall

  96. architecture to which the feature applies; so e.g. the feature

  97. containing ARM core registers is named &lsquo;<samp>org.gnu.gdb.arm.core</samp>&rsquo;.

  98. </p>

  99. <p>The names of registers are not case sensitive for the purpose

  100. of recognizing standard features, but <small>GDB</small> will only display

  101. registers using the capitalization used in the description.

  102. </p>

  103. <table class="menu" border="0" cellspacing="0">

  104. <tr><td align="left" valign="top">&bull; <a href="AArch64-Features.html#AArch64-Features" accesskey="1">AArch64 Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  105. </td></tr>

  106. <tr><td align="left" valign="top">&bull; <a href="ARC-Features.html#ARC-Features" accesskey="2">ARC Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  107. </td></tr>

  108. <tr><td align="left" valign="top">&bull; <a href="ARM-Features.html#ARM-Features" accesskey="3">ARM Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  109. </td></tr>

  110. <tr><td align="left" valign="top">&bull; <a href="i386-Features.html#i386-Features" accesskey="4">i386 Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  111. </td></tr>

  112. <tr><td align="left" valign="top">&bull; <a href="MicroBlaze-Features.html#MicroBlaze-Features" accesskey="5">MicroBlaze Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  113. </td></tr>

  114. <tr><td align="left" valign="top">&bull; <a href="MIPS-Features.html#MIPS-Features" accesskey="6">MIPS Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  115. </td></tr>

  116. <tr><td align="left" valign="top">&bull; <a href="M68K-Features.html#M68K-Features" accesskey="7">M68K Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  117. </td></tr>

  118. <tr><td align="left" valign="top">&bull; <a href="NDS32-Features.html#NDS32-Features" accesskey="8">NDS32 Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  119. </td></tr>

  120. <tr><td align="left" valign="top">&bull; <a href="Nios-II-Features.html#Nios-II-Features" accesskey="9">Nios II Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  121. </td></tr>

  122. <tr><td align="left" valign="top">&bull; <a href="OpenRISC-1000-Features.html#OpenRISC-1000-Features">OpenRISC 1000 Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  123. </td></tr>

  124. <tr><td align="left" valign="top">&bull; <a href="PowerPC-Features.html#PowerPC-Features">PowerPC Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  125. </td></tr>

  126. <tr><td align="left" valign="top">&bull; <a href="RISC_002dV-Features.html#RISC_002dV-Features">RISC-V Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  127. </td></tr>

  128. <tr><td align="left" valign="top">&bull; <a href="RX-Features.html#RX-Features">RX Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  129. </td></tr>

  130. <tr><td align="left" valign="top">&bull; <a href="S_002f390-and-System-z-Features.html#S_002f390-and-System-z-Features">S/390 and System z Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  131. </td></tr>

  132. <tr><td align="left" valign="top">&bull; <a href="Sparc-Features.html#Sparc-Features">Sparc Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  133. </td></tr>

  134. <tr><td align="left" valign="top">&bull; <a href="TIC6x-Features.html#TIC6x-Features">TIC6x Features</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">

  135. </td></tr>

  136. </table>

  137. 

  138. 

  139. <hr>

  140. <div class="header">

  141. <p>

  142. Previous: <a href="Enum-Target-Types.html#Enum-Target-Types" accesskey="p" rel="prev">Enum Target Types</a>, Up: <a href="Target-Descriptions.html#Target-Descriptions" accesskey="u" rel="up">Target Descriptions</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>

  143. </div>

  144. 

  145. 

  146. 

  147. </body>

  148. </html>