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  1. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

  2. <html>

  3. <!-- This file documents the GNU Assembler "as".

  4. 

  5. Copyright (C) 1991-2020 Free Software Foundation, Inc.

  6. 

  7. Permission is granted to copy, distribute and/or modify this document

  8. under the terms of the GNU Free Documentation License, Version 1.3

  9. or any later version published by the Free Software Foundation;

  10. with no Invariant Sections, with no Front-Cover Texts, and with no

  11. Back-Cover Texts.  A copy of the license is included in the

  12. section entitled "GNU Free Documentation License".

  13.  -->

  14. <!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ -->

  15. <head>

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

  17. <title>Machine Dependencies (Using as)</title>

  18. 

  19. <meta name="description" content="Machine Dependencies (Using as)">

  20. <meta name="keywords" content="Machine Dependencies (Using as)">

  21. <meta name="resource-type" content="document">

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  24. <link href="index.html#Top" rel="start" title="Top">

  25. <link href="AS-Index.html#AS-Index" rel="index" title="AS Index">

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

  27. <link href="index.html#Top" rel="up" title="Top">

  28. <link href="AArch64_002dDependent.html#AArch64_002dDependent" rel="next" title="AArch64-Dependent">

  29. <link href="Defining-New-Object-Attributes.html#Defining-New-Object-Attributes" rel="prev" title="Defining New Object Attributes">

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  56. </style>

  57. 

  58. 

  59. </head>

  60. 

  61. <body lang="en">

  62. <a name="Machine-Dependencies"></a>

  63. <div class="header">

  64. <p>

  65. Next: <a href="Reporting-Bugs.html#Reporting-Bugs" accesskey="n" rel="next">Reporting Bugs</a>, Previous: <a href="Object-Attributes.html#Object-Attributes" accesskey="p" rel="prev">Object Attributes</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>

  66. </div>

  67. <hr>

  68. <a name="Machine-Dependent-Features"></a>

  69. <h2 class="chapter">9 Machine Dependent Features</h2>

  70. 

  71. <a name="index-machine-dependencies"></a>

  72. <p>The machine instruction sets are (almost by definition) different on

  73. each machine where <code>as</code> runs.  Floating point representations

  74. vary as well, and <code>as</code> often supports a few additional

  75. directives or command-line options for compatibility with other

  76. assemblers on a particular platform.  Finally, some versions of

  77. <code>as</code> support special pseudo-instructions for branch

  78. optimization.

  79. </p>

  80. <p>This chapter discusses most of these differences, though it does not

  81. include details on any machine&rsquo;s instruction set.  For details on that

  82. subject, see the hardware manufacturer&rsquo;s manual.

  83. </p>

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

  85. <tr><td align="left" valign="top">&bull; <a href="AArch64_002dDependent.html#AArch64_002dDependent" accesskey="1">AArch64-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">AArch64 Dependent Features

  86. </td></tr>

  87. <tr><td align="left" valign="top">&bull; <a href="Alpha_002dDependent.html#Alpha_002dDependent" accesskey="2">Alpha-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Alpha Dependent Features

  88. </td></tr>

  89. <tr><td align="left" valign="top">&bull; <a href="ARC_002dDependent.html#ARC_002dDependent" accesskey="3">ARC-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">ARC Dependent Features

  90. </td></tr>

  91. <tr><td align="left" valign="top">&bull; <a href="ARM_002dDependent.html#ARM_002dDependent" accesskey="4">ARM-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">ARM Dependent Features

  92. </td></tr>

  93. <tr><td align="left" valign="top">&bull; <a href="AVR_002dDependent.html#AVR_002dDependent" accesskey="5">AVR-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">AVR Dependent Features

  94. </td></tr>

  95. <tr><td align="left" valign="top">&bull; <a href="Blackfin_002dDependent.html#Blackfin_002dDependent" accesskey="6">Blackfin-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Blackfin Dependent Features

  96. </td></tr>

  97. <tr><td align="left" valign="top">&bull; <a href="BPF_002dDependent.html#BPF_002dDependent" accesskey="7">BPF-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">BPF Dependent Features

  98. </td></tr>

  99. <tr><td align="left" valign="top">&bull; <a href="CR16_002dDependent.html#CR16_002dDependent" accesskey="8">CR16-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">CR16 Dependent Features

  100. </td></tr>

  101. <tr><td align="left" valign="top">&bull; <a href="CRIS_002dDependent.html#CRIS_002dDependent" accesskey="9">CRIS-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">CRIS Dependent Features

  102. </td></tr>

  103. <tr><td align="left" valign="top">&bull; <a href="C_002dSKY_002dDependent.html#C_002dSKY_002dDependent">C-SKY-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">C-SKY Dependent Features

  104. </td></tr>

  105. <tr><td align="left" valign="top">&bull; <a href="D10V_002dDependent.html#D10V_002dDependent">D10V-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">D10V Dependent Features

  106. </td></tr>

  107. <tr><td align="left" valign="top">&bull; <a href="D30V_002dDependent.html#D30V_002dDependent">D30V-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">D30V Dependent Features

  108. </td></tr>

  109. <tr><td align="left" valign="top">&bull; <a href="Epiphany_002dDependent.html#Epiphany_002dDependent">Epiphany-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">EPIPHANY Dependent Features

  110. </td></tr>

  111. <tr><td align="left" valign="top">&bull; <a href="H8_002f300_002dDependent.html#H8_002f300_002dDependent">H8/300-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Renesas H8/300 Dependent Features

  112. </td></tr>

  113. <tr><td align="left" valign="top">&bull; <a href="HPPA_002dDependent.html#HPPA_002dDependent">HPPA-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">HPPA Dependent Features

  114. </td></tr>

  115. <tr><td align="left" valign="top">&bull; <a href="i386_002dDependent.html#i386_002dDependent">i386-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Intel 80386 and AMD x86-64 Dependent Features

  116. </td></tr>

  117. <tr><td align="left" valign="top">&bull; <a href="IA_002d64_002dDependent.html#IA_002d64_002dDependent">IA-64-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Intel IA-64 Dependent Features

  118. </td></tr>

  119. <tr><td align="left" valign="top">&bull; <a href="IP2K_002dDependent.html#IP2K_002dDependent">IP2K-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">IP2K Dependent Features

  120. </td></tr>

  121. <tr><td align="left" valign="top">&bull; <a href="LM32_002dDependent.html#LM32_002dDependent">LM32-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">LM32 Dependent Features

  122. </td></tr>

  123. <tr><td align="left" valign="top">&bull; <a href="M32C_002dDependent.html#M32C_002dDependent">M32C-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">M32C Dependent Features

  124. </td></tr>

  125. <tr><td align="left" valign="top">&bull; <a href="M32R_002dDependent.html#M32R_002dDependent">M32R-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">M32R Dependent Features

  126. </td></tr>

  127. <tr><td align="left" valign="top">&bull; <a href="M68K_002dDependent.html#M68K_002dDependent">M68K-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">M680x0 Dependent Features

  128. </td></tr>

  129. <tr><td align="left" valign="top">&bull; <a href="M68HC11_002dDependent.html#M68HC11_002dDependent">M68HC11-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">M68HC11 and 68HC12 Dependent Features

  130. </td></tr>

  131. <tr><td align="left" valign="top">&bull; <a href="S12Z_002dDependent.html#S12Z_002dDependent">S12Z-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">S12Z Dependent Features

  132. </td></tr>

  133. <tr><td align="left" valign="top">&bull; <a href="Meta_002dDependent.html#Meta_002dDependent">Meta-Dependent </a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Meta Dependent Features

  134. </td></tr>

  135. <tr><td align="left" valign="top">&bull; <a href="MicroBlaze_002dDependent.html#MicroBlaze_002dDependent">MicroBlaze-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">MICROBLAZE Dependent Features

  136. </td></tr>

  137. <tr><td align="left" valign="top">&bull; <a href="MIPS_002dDependent.html#MIPS_002dDependent">MIPS-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">MIPS Dependent Features

  138. </td></tr>

  139. <tr><td align="left" valign="top">&bull; <a href="MMIX_002dDependent.html#MMIX_002dDependent">MMIX-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">MMIX Dependent Features

  140. </td></tr>

  141. <tr><td align="left" valign="top">&bull; <a href="MSP430_002dDependent.html#MSP430_002dDependent">MSP430-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">MSP430 Dependent Features

  142. </td></tr>

  143. <tr><td align="left" valign="top">&bull; <a href="NDS32_002dDependent.html#NDS32_002dDependent">NDS32-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Andes NDS32 Dependent Features

  144. </td></tr>

  145. <tr><td align="left" valign="top">&bull; <a href="NiosII_002dDependent.html#NiosII_002dDependent">NiosII-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Altera Nios II Dependent Features

  146. </td></tr>

  147. <tr><td align="left" valign="top">&bull; <a href="NS32K_002dDependent.html#NS32K_002dDependent">NS32K-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">NS32K Dependent Features

  148. </td></tr>

  149. <tr><td align="left" valign="top">&bull; <a href="OpenRISC_002dDependent.html#OpenRISC_002dDependent">OpenRISC-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">OpenRISC 1000 Features

  150. </td></tr>

  151. <tr><td align="left" valign="top">&bull; <a href="PDP_002d11_002dDependent.html#PDP_002d11_002dDependent">PDP-11-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">PDP-11 Dependent Features

  152. </td></tr>

  153. <tr><td align="left" valign="top">&bull; <a href="PJ_002dDependent.html#PJ_002dDependent">PJ-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">picoJava Dependent Features

  154. </td></tr>

  155. <tr><td align="left" valign="top">&bull; <a href="PPC_002dDependent.html#PPC_002dDependent">PPC-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">PowerPC Dependent Features

  156. </td></tr>

  157. <tr><td align="left" valign="top">&bull; <a href="PRU_002dDependent.html#PRU_002dDependent">PRU-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">PRU Dependent Features

  158. </td></tr>

  159. <tr><td align="left" valign="top">&bull; <a href="RISC_002dV_002dDependent.html#RISC_002dV_002dDependent">RISC-V-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">RISC-V Dependent Features

  160. </td></tr>

  161. <tr><td align="left" valign="top">&bull; <a href="RL78_002dDependent.html#RL78_002dDependent">RL78-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">RL78 Dependent Features

  162. </td></tr>

  163. <tr><td align="left" valign="top">&bull; <a href="RX_002dDependent.html#RX_002dDependent">RX-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">RX Dependent Features

  164. </td></tr>

  165. <tr><td align="left" valign="top">&bull; <a href="S_002f390_002dDependent.html#S_002f390_002dDependent">S/390-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">IBM S/390 Dependent Features

  166. </td></tr>

  167. <tr><td align="left" valign="top">&bull; <a href="SCORE_002dDependent.html#SCORE_002dDependent">SCORE-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">SCORE Dependent Features

  168. </td></tr>

  169. <tr><td align="left" valign="top">&bull; <a href="SH_002dDependent.html#SH_002dDependent">SH-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Renesas / SuperH SH Dependent Features

  170. </td></tr>

  171. <tr><td align="left" valign="top">&bull; <a href="Sparc_002dDependent.html#Sparc_002dDependent">Sparc-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">SPARC Dependent Features

  172. </td></tr>

  173. <tr><td align="left" valign="top">&bull; <a href="TIC54X_002dDependent.html#TIC54X_002dDependent">TIC54X-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">TI TMS320C54x Dependent Features

  174. </td></tr>

  175. <tr><td align="left" valign="top">&bull; <a href="TIC6X_002dDependent.html#TIC6X_002dDependent">TIC6X-Dependent </a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">TI TMS320C6x Dependent Features

  176. </td></tr>

  177. <tr><td align="left" valign="top">&bull; <a href="TILE_002dGx_002dDependent.html#TILE_002dGx_002dDependent">TILE-Gx-Dependent </a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Tilera TILE-Gx Dependent Features

  178. </td></tr>

  179. <tr><td align="left" valign="top">&bull; <a href="TILEPro_002dDependent.html#TILEPro_002dDependent">TILEPro-Dependent </a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Tilera TILEPro Dependent Features

  180. </td></tr>

  181. <tr><td align="left" valign="top">&bull; <a href="V850_002dDependent.html#V850_002dDependent">V850-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">V850 Dependent Features

  182. </td></tr>

  183. <tr><td align="left" valign="top">&bull; <a href="Vax_002dDependent.html#Vax_002dDependent">Vax-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">VAX Dependent Features

  184. </td></tr>

  185. <tr><td align="left" valign="top">&bull; <a href="Visium_002dDependent.html#Visium_002dDependent">Visium-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Visium Dependent Features

  186. </td></tr>

  187. <tr><td align="left" valign="top">&bull; <a href="WebAssembly_002dDependent.html#WebAssembly_002dDependent">WebAssembly-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">WebAssembly Dependent Features

  188. </td></tr>

  189. <tr><td align="left" valign="top">&bull; <a href="XGATE_002dDependent.html#XGATE_002dDependent">XGATE-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">XGATE Dependent Features

  190. </td></tr>

  191. <tr><td align="left" valign="top">&bull; <a href="XSTORMY16_002dDependent.html#XSTORMY16_002dDependent">XSTORMY16-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">XStormy16 Dependent Features

  192. </td></tr>

  193. <tr><td align="left" valign="top">&bull; <a href="Xtensa_002dDependent.html#Xtensa_002dDependent">Xtensa-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Xtensa Dependent Features

  194. </td></tr>

  195. <tr><td align="left" valign="top">&bull; <a href="Z80_002dDependent.html#Z80_002dDependent">Z80-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Z80 Dependent Features

  196. </td></tr>

  197. <tr><td align="left" valign="top">&bull; <a href="Z8000_002dDependent.html#Z8000_002dDependent">Z8000-Dependent</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Z8000 Dependent Features

  198. </td></tr>

  199. </table>

  200. 

  201. 

  202. 

  203. 

  204. <hr>

  205. <div class="header">

  206. <p>

  207. Next: <a href="Reporting-Bugs.html#Reporting-Bugs" accesskey="n" rel="next">Reporting Bugs</a>, Previous: <a href="Object-Attributes.html#Object-Attributes" accesskey="p" rel="prev">Object Attributes</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>

  208. </div>

  209. 

  210. 

  211. 

  212. </body>

  213. </html>