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toolchain-gcc-arm-embedded/share/doc/gcc-arm-none-eabi/html/as.html/TIC6X-Syntax.html

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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>TIC6X Syntax (Using as)</title>

  18. 

  19. <meta name="description" content="TIC6X Syntax (Using as)">

  20. <meta name="keywords" content="TIC6X Syntax (Using as)">

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  23. <meta name="Generator" content="makeinfo">

  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="TIC6X_002dDependent.html#TIC6X_002dDependent" rel="up" title="TIC6X-Dependent">

  28. <link href="TIC6X-Directives.html#TIC6X-Directives" rel="next" title="TIC6X Directives">

  29. <link href="TIC6X-Options.html#TIC6X-Options" rel="prev" title="TIC6X Options">

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  57. 

  58. 

  59. </head>

  60. 

  61. <body lang="en">

  62. <a name="TIC6X-Syntax"></a>

  63. <div class="header">

  64. <p>

  65. Next: <a href="TIC6X-Directives.html#TIC6X-Directives" accesskey="n" rel="next">TIC6X Directives</a>, Previous: <a href="TIC6X-Options.html#TIC6X-Options" accesskey="p" rel="prev">TIC6X Options</a>, Up: <a href="TIC6X_002dDependent.html#TIC6X_002dDependent" accesskey="u" rel="up">TIC6X-Dependent</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="TIC6X-Syntax-1"></a>

  69. <h4 class="subsection">9.46.2 TIC6X Syntax</h4>

  70. 

  71. <a name="index-line-comment-character_002c-TIC6X"></a>

  72. <a name="index-TIC6X-line-comment-character"></a>

  73. <p>The presence of a &lsquo;<samp>;</samp>&rsquo; on a line indicates the start of a comment

  74. that extends to the end of the current line.  If a &lsquo;<samp>#</samp>&rsquo; or

  75. &lsquo;<samp>*</samp>&rsquo; appears as the first character of a line, the whole line is

  76. treated as a comment.  Note that if a line starts with a &lsquo;<samp>#</samp>&rsquo;

  77. character then it can also be a logical line number directive

  78. (see <a href="Comments.html#Comments">Comments</a>) or a preprocessor control command

  79. (see <a href="Preprocessing.html#Preprocessing">Preprocessing</a>).

  80. </p>

  81. <a name="index-line-separator_002c-TIC6X"></a>

  82. <a name="index-statement-separator_002c-TIC6X"></a>

  83. <a name="index-TIC6X-line-separator"></a>

  84. <p>The &lsquo;<samp>@</samp>&rsquo; character can be used instead of a newline to separate

  85. statements.

  86. </p>

  87. <p>Instruction, register and functional unit names are case-insensitive.

  88. <code>as</code> requires fully-specified functional unit names,

  89. such as &lsquo;<samp>.S1</samp>&rsquo;, &lsquo;<samp>.L1X</samp>&rsquo; or &lsquo;<samp>.D1T2</samp>&rsquo;, on all instructions

  90. using a functional unit.

  91. </p>

  92. <p>For some instructions, there may be syntactic ambiguity between

  93. register or functional unit names and the names of labels or other

  94. symbols.  To avoid this, enclose the ambiguous symbol name in

  95. parentheses; register and functional unit names may not be enclosed in

  96. parentheses.

  97. </p>

  98. 

  99. 

  100. 

  101. </body>

  102. </html>