| <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html> |
| <!-- Copyright (C) 1988-2015 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 1.3 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. --> |
| <!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ --> |
| <head> |
| <title>Using the GNU Compiler Collection (GCC): RX Built-in Functions</title> |
| |
| <meta name="description" content="Using the GNU Compiler Collection (GCC): RX Built-in Functions"> |
| <meta name="keywords" content="Using the GNU Compiler Collection (GCC): RX Built-in Functions"> |
| <meta name="resource-type" content="document"> |
| <meta name="distribution" content="global"> |
| <meta name="Generator" content="makeinfo"> |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
| <link href="index.html#Top" rel="start" title="Top"> |
| <link href="Option-Index.html#Option-Index" rel="index" title="Option Index"> |
| <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> |
| <link href="Target-Builtins.html#Target-Builtins" rel="up" title="Target Builtins"> |
| <link href="S_002f390-System-z-Built_002din-Functions.html#S_002f390-System-z-Built_002din-Functions" rel="next" title="S/390 System z Built-in Functions"> |
| <link href="PowerPC-Hardware-Transactional-Memory-Built_002din-Functions.html#PowerPC-Hardware-Transactional-Memory-Built_002din-Functions" rel="prev" title="PowerPC Hardware Transactional Memory Built-in Functions"> |
| <style type="text/css"> |
| <!-- |
| a.summary-letter {text-decoration: none} |
| blockquote.smallquotation {font-size: smaller} |
| div.display {margin-left: 3.2em} |
| div.example {margin-left: 3.2em} |
| div.indentedblock {margin-left: 3.2em} |
| div.lisp {margin-left: 3.2em} |
| div.smalldisplay {margin-left: 3.2em} |
| div.smallexample {margin-left: 3.2em} |
| div.smallindentedblock {margin-left: 3.2em; font-size: smaller} |
| div.smalllisp {margin-left: 3.2em} |
| kbd {font-style:oblique} |
| pre.display {font-family: inherit} |
| pre.format {font-family: inherit} |
| pre.menu-comment {font-family: serif} |
| pre.menu-preformatted {font-family: serif} |
| pre.smalldisplay {font-family: inherit; font-size: smaller} |
| pre.smallexample {font-size: smaller} |
| pre.smallformat {font-family: inherit; font-size: smaller} |
| pre.smalllisp {font-size: smaller} |
| span.nocodebreak {white-space:nowrap} |
| span.nolinebreak {white-space:nowrap} |
| span.roman {font-family:serif; font-weight:normal} |
| span.sansserif {font-family:sans-serif; font-weight:normal} |
| ul.no-bullet {list-style: none} |
| --> |
| </style> |
| |
| |
| </head> |
| |
| <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> |
| <a name="RX-Built_002din-Functions"></a> |
| <div class="header"> |
| <p> |
| Next: <a href="S_002f390-System-z-Built_002din-Functions.html#S_002f390-System-z-Built_002din-Functions" accesskey="n" rel="next">S/390 System z Built-in Functions</a>, Previous: <a href="PowerPC-Hardware-Transactional-Memory-Built_002din-Functions.html#PowerPC-Hardware-Transactional-Memory-Built_002din-Functions" accesskey="p" rel="prev">PowerPC Hardware Transactional Memory Built-in Functions</a>, Up: <a href="Target-Builtins.html#Target-Builtins" accesskey="u" rel="up">Target Builtins</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> |
| </div> |
| <hr> |
| <a name="RX-Built_002din-Functions-1"></a> |
| <h4 class="subsection">6.57.24 RX Built-in Functions</h4> |
| <p>GCC supports some of the RX instructions which cannot be expressed in |
| the C programming language via the use of built-in functions. The |
| following functions are supported: |
| </p> |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fbrk"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_brk</strong> <em>(void)</em></dt> |
| <dd><p>Generates the <code>brk</code> machine instruction. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fclrpsw"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_clrpsw</strong> <em>(int)</em></dt> |
| <dd><p>Generates the <code>clrpsw</code> machine instruction to clear the specified |
| bit in the processor status word. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fint"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_int</strong> <em>(int)</em></dt> |
| <dd><p>Generates the <code>int</code> machine instruction to generate an interrupt |
| with the specified value. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmachi"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_machi</strong> <em>(int, int)</em></dt> |
| <dd><p>Generates the <code>machi</code> machine instruction to add the result of |
| multiplying the top 16 bits of the two arguments into the |
| accumulator. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmaclo"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_maclo</strong> <em>(int, int)</em></dt> |
| <dd><p>Generates the <code>maclo</code> machine instruction to add the result of |
| multiplying the bottom 16 bits of the two arguments into the |
| accumulator. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmulhi"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_mulhi</strong> <em>(int, int)</em></dt> |
| <dd><p>Generates the <code>mulhi</code> machine instruction to place the result of |
| multiplying the top 16 bits of the two arguments into the |
| accumulator. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmullo"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_mullo</strong> <em>(int, int)</em></dt> |
| <dd><p>Generates the <code>mullo</code> machine instruction to place the result of |
| multiplying the bottom 16 bits of the two arguments into the |
| accumulator. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmvfachi"></a>Built-in Function: <em>int</em> <strong>__builtin_rx_mvfachi</strong> <em>(void)</em></dt> |
| <dd><p>Generates the <code>mvfachi</code> machine instruction to read the top |
| 32 bits of the accumulator. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmvfacmi"></a>Built-in Function: <em>int</em> <strong>__builtin_rx_mvfacmi</strong> <em>(void)</em></dt> |
| <dd><p>Generates the <code>mvfacmi</code> machine instruction to read the middle |
| 32 bits of the accumulator. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmvfc"></a>Built-in Function: <em>int</em> <strong>__builtin_rx_mvfc</strong> <em>(int)</em></dt> |
| <dd><p>Generates the <code>mvfc</code> machine instruction which reads the control |
| register specified in its argument and returns its value. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmvtachi"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_mvtachi</strong> <em>(int)</em></dt> |
| <dd><p>Generates the <code>mvtachi</code> machine instruction to set the top |
| 32 bits of the accumulator. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmvtaclo"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_mvtaclo</strong> <em>(int)</em></dt> |
| <dd><p>Generates the <code>mvtaclo</code> machine instruction to set the bottom |
| 32 bits of the accumulator. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmvtc"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_mvtc</strong> <em>(int reg, int val)</em></dt> |
| <dd><p>Generates the <code>mvtc</code> machine instruction which sets control |
| register number <code>reg</code> to <code>val</code>. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fmvtipl"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_mvtipl</strong> <em>(int)</em></dt> |
| <dd><p>Generates the <code>mvtipl</code> machine instruction set the interrupt |
| priority level. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fracw"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_racw</strong> <em>(int)</em></dt> |
| <dd><p>Generates the <code>racw</code> machine instruction to round the accumulator |
| according to the specified mode. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005frevw"></a>Built-in Function: <em>int</em> <strong>__builtin_rx_revw</strong> <em>(int)</em></dt> |
| <dd><p>Generates the <code>revw</code> machine instruction which swaps the bytes in |
| the argument so that bits 0–7 now occupy bits 8–15 and vice versa, |
| and also bits 16–23 occupy bits 24–31 and vice versa. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005frmpa"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_rmpa</strong> <em>(void)</em></dt> |
| <dd><p>Generates the <code>rmpa</code> machine instruction which initiates a |
| repeated multiply and accumulate sequence. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fround"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_round</strong> <em>(float)</em></dt> |
| <dd><p>Generates the <code>round</code> machine instruction which returns the |
| floating-point argument rounded according to the current rounding mode |
| set in the floating-point status word register. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fsat"></a>Built-in Function: <em>int</em> <strong>__builtin_rx_sat</strong> <em>(int)</em></dt> |
| <dd><p>Generates the <code>sat</code> machine instruction which returns the |
| saturated value of the argument. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fsetpsw"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_setpsw</strong> <em>(int)</em></dt> |
| <dd><p>Generates the <code>setpsw</code> machine instruction to set the specified |
| bit in the processor status word. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-_005f_005fbuiltin_005frx_005fwait"></a>Built-in Function: <em>void</em> <strong>__builtin_rx_wait</strong> <em>(void)</em></dt> |
| <dd><p>Generates the <code>wait</code> machine instruction. |
| </p></dd></dl> |
| |
| <hr> |
| <div class="header"> |
| <p> |
| Next: <a href="S_002f390-System-z-Built_002din-Functions.html#S_002f390-System-z-Built_002din-Functions" accesskey="n" rel="next">S/390 System z Built-in Functions</a>, Previous: <a href="PowerPC-Hardware-Transactional-Memory-Built_002din-Functions.html#PowerPC-Hardware-Transactional-Memory-Built_002din-Functions" accesskey="p" rel="prev">PowerPC Hardware Transactional Memory Built-in Functions</a>, Up: <a href="Target-Builtins.html#Target-Builtins" accesskey="u" rel="up">Target Builtins</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p> |
| </div> |
| |
| |
| |
| </body> |
| </html> |
