| <html lang="en"> |
| <head> |
| <title>Argument Types - Using the GNU Compiler Collection (GCC)</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="Using the GNU Compiler Collection (GCC)"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="FR_002dV-Built_002din-Functions.html#FR_002dV-Built_002din-Functions" title="FR-V Built-in Functions"> |
| <link rel="next" href="Directly_002dmapped-Integer-Functions.html#Directly_002dmapped-Integer-Functions" title="Directly-mapped Integer Functions"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
| 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
| 2008 Free Software Foundation, Inc. |
| |
| Permission is granted to copy, distribute and/or modify this document |
| under the terms of the GNU Free Documentation License, Version 1.2 or |
| any later version published by the Free Software Foundation; with the |
| Invariant Sections being ``Funding Free Software'', the Front-Cover |
| Texts being (a) (see below), and with the Back-Cover Texts being (b) |
| (see below). A copy of the license is included in the section entitled |
| ``GNU Free Documentation License''. |
| |
| (a) The FSF's Front-Cover Text is: |
| |
| A GNU Manual |
| |
| (b) The FSF's Back-Cover Text is: |
| |
| You have freedom to copy and modify this GNU Manual, like GNU |
| software. Copies published by the Free Software Foundation raise |
| funds for GNU development.--> |
| <meta http-equiv="Content-Style-Type" content="text/css"> |
| <style type="text/css"><!-- |
| pre.display { font-family:inherit } |
| pre.format { font-family:inherit } |
| pre.smalldisplay { font-family:inherit; font-size:smaller } |
| pre.smallformat { font-family:inherit; font-size:smaller } |
| pre.smallexample { font-size:smaller } |
| pre.smalllisp { font-size:smaller } |
| span.sc { font-variant:small-caps } |
| span.roman { font-family:serif; font-weight:normal; } |
| span.sansserif { font-family:sans-serif; font-weight:normal; } |
| --></style> |
| <link rel="stylesheet" type="text/css" href="../cs.css"> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="Argument-Types"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="Directly_002dmapped-Integer-Functions.html#Directly_002dmapped-Integer-Functions">Directly-mapped Integer Functions</a>, |
| Up: <a rel="up" accesskey="u" href="FR_002dV-Built_002din-Functions.html#FR_002dV-Built_002din-Functions">FR-V Built-in Functions</a> |
| <hr> |
| </div> |
| |
| <h5 class="subsubsection">6.52.5.1 Argument Types</h5> |
| |
| <p>The arguments to the built-in functions can be divided into three groups: |
| register numbers, compile-time constants and run-time values. In order |
| to make this classification clear at a glance, the arguments and return |
| values are given the following pseudo types: |
| |
| <p><table summary=""><tr align="left"><td valign="top" width="20%">Pseudo type </td><td valign="top" width="30%">Real C type </td><td valign="top" width="15%">Constant? </td><td valign="top" width="35%">Description |
| <br></td></tr><tr align="left"><td valign="top" width="20%"><code>uh</code> </td><td valign="top" width="30%"><code>unsigned short</code> </td><td valign="top" width="15%">No </td><td valign="top" width="35%">an unsigned halfword |
| <br></td></tr><tr align="left"><td valign="top" width="20%"><code>uw1</code> </td><td valign="top" width="30%"><code>unsigned int</code> </td><td valign="top" width="15%">No </td><td valign="top" width="35%">an unsigned word |
| <br></td></tr><tr align="left"><td valign="top" width="20%"><code>sw1</code> </td><td valign="top" width="30%"><code>int</code> </td><td valign="top" width="15%">No </td><td valign="top" width="35%">a signed word |
| <br></td></tr><tr align="left"><td valign="top" width="20%"><code>uw2</code> </td><td valign="top" width="30%"><code>unsigned long long</code> </td><td valign="top" width="15%">No |
| </td><td valign="top" width="35%">an unsigned doubleword |
| <br></td></tr><tr align="left"><td valign="top" width="20%"><code>sw2</code> </td><td valign="top" width="30%"><code>long long</code> </td><td valign="top" width="15%">No </td><td valign="top" width="35%">a signed doubleword |
| <br></td></tr><tr align="left"><td valign="top" width="20%"><code>const</code> </td><td valign="top" width="30%"><code>int</code> </td><td valign="top" width="15%">Yes </td><td valign="top" width="35%">an integer constant |
| <br></td></tr><tr align="left"><td valign="top" width="20%"><code>acc</code> </td><td valign="top" width="30%"><code>int</code> </td><td valign="top" width="15%">Yes </td><td valign="top" width="35%">an ACC register number |
| <br></td></tr><tr align="left"><td valign="top" width="20%"><code>iacc</code> </td><td valign="top" width="30%"><code>int</code> </td><td valign="top" width="15%">Yes </td><td valign="top" width="35%">an IACC register number |
| <br></td></tr></table> |
| |
| <p>These pseudo types are not defined by GCC, they are simply a notational |
| convenience used in this manual. |
| |
| <p>Arguments of type <code>uh</code>, <code>uw1</code>, <code>sw1</code>, <code>uw2</code> |
| and <code>sw2</code> are evaluated at run time. They correspond to |
| register operands in the underlying FR-V instructions. |
| |
| <p><code>const</code> arguments represent immediate operands in the underlying |
| FR-V instructions. They must be compile-time constants. |
| |
| <p><code>acc</code> arguments are evaluated at compile time and specify the number |
| of an accumulator register. For example, an <code>acc</code> argument of 2 |
| will select the ACC2 register. |
| |
| <p><code>iacc</code> arguments are similar to <code>acc</code> arguments but specify the |
| number of an IACC register. See see <a href="Other-Built_002din-Functions.html#Other-Built_002din-Functions">Other Built-in Functions</a> |
| for more details. |
| |
| </body></html> |
| |
