| <html lang="en"> |
| <head> |
| <title>RX Built-in Functions - 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="Target-Builtins.html#Target-Builtins" title="Target Builtins"> |
| <link rel="prev" href="PowerPC-AltiVec_002fVSX-Built_002din-Functions.html#PowerPC-AltiVec_002fVSX-Built_002din-Functions" title="PowerPC AltiVec/VSX Built-in Functions"> |
| <link rel="next" href="S_002f390-System-z-Built_002din-Functions.html#S_002f390-System-z-Built_002din-Functions" title="S/390 System z Built-in Functions"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988-2013 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.--> |
| <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> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="RX-Built-in-Functions"></a> |
| <a name="RX-Built_002din-Functions"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="S_002f390-System-z-Built_002din-Functions.html#S_002f390-System-z-Built_002din-Functions">S/390 System z Built-in Functions</a>, |
| Previous: <a rel="previous" accesskey="p" href="PowerPC-AltiVec_002fVSX-Built_002din-Functions.html#PowerPC-AltiVec_002fVSX-Built_002din-Functions">PowerPC AltiVec/VSX Built-in Functions</a>, |
| Up: <a rel="up" accesskey="u" href="Target-Builtins.html#Target-Builtins">Target Builtins</a> |
| <hr> |
| </div> |
| |
| <h4 class="subsection">6.56.16 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: |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_brk</b> (<var>void</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fbrk-3416"></a></var><br> |
| <blockquote><p>Generates the <code>brk</code> machine instruction. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_clrpsw</b> (<var>int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fclrpsw-3417"></a></var><br> |
| <blockquote><p>Generates the <code>clrpsw</code> machine instruction to clear the specified |
| bit in the processor status word. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_int</b> (<var>int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fint-3418"></a></var><br> |
| <blockquote><p>Generates the <code>int</code> machine instruction to generate an interrupt |
| with the specified value. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_machi</b> (<var>int, int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmachi-3419"></a></var><br> |
| <blockquote><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></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_maclo</b> (<var>int, int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmaclo-3420"></a></var><br> |
| <blockquote><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></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_mulhi</b> (<var>int, int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmulhi-3421"></a></var><br> |
| <blockquote><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></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_mullo</b> (<var>int, int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmullo-3422"></a></var><br> |
| <blockquote><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></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: int <b>__builtin_rx_mvfachi</b> (<var>void</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmvfachi-3423"></a></var><br> |
| <blockquote><p>Generates the <code>mvfachi</code> machine instruction to read the top |
| 32 bits of the accumulator. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: int <b>__builtin_rx_mvfacmi</b> (<var>void</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmvfacmi-3424"></a></var><br> |
| <blockquote><p>Generates the <code>mvfacmi</code> machine instruction to read the middle |
| 32 bits of the accumulator. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: int <b>__builtin_rx_mvfc</b> (<var>int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmvfc-3425"></a></var><br> |
| <blockquote><p>Generates the <code>mvfc</code> machine instruction which reads the control |
| register specified in its argument and returns its value. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_mvtachi</b> (<var>int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmvtachi-3426"></a></var><br> |
| <blockquote><p>Generates the <code>mvtachi</code> machine instruction to set the top |
| 32 bits of the accumulator. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_mvtaclo</b> (<var>int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmvtaclo-3427"></a></var><br> |
| <blockquote><p>Generates the <code>mvtaclo</code> machine instruction to set the bottom |
| 32 bits of the accumulator. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_mvtc</b> (<var>int reg, int val</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmvtc-3428"></a></var><br> |
| <blockquote><p>Generates the <code>mvtc</code> machine instruction which sets control |
| register number <code>reg</code> to <code>val</code>. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_mvtipl</b> (<var>int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fmvtipl-3429"></a></var><br> |
| <blockquote><p>Generates the <code>mvtipl</code> machine instruction set the interrupt |
| priority level. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_racw</b> (<var>int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fracw-3430"></a></var><br> |
| <blockquote><p>Generates the <code>racw</code> machine instruction to round the accumulator |
| according to the specified mode. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: int <b>__builtin_rx_revw</b> (<var>int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005frevw-3431"></a></var><br> |
| <blockquote><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></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_rmpa</b> (<var>void</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005frmpa-3432"></a></var><br> |
| <blockquote><p>Generates the <code>rmpa</code> machine instruction which initiates a |
| repeated multiply and accumulate sequence. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_round</b> (<var>float</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fround-3433"></a></var><br> |
| <blockquote><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></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: int <b>__builtin_rx_sat</b> (<var>int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fsat-3434"></a></var><br> |
| <blockquote><p>Generates the <code>sat</code> machine instruction which returns the |
| saturated value of the argument. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_setpsw</b> (<var>int</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fsetpsw-3435"></a></var><br> |
| <blockquote><p>Generates the <code>setpsw</code> machine instruction to set the specified |
| bit in the processor status word. |
| </p></blockquote></div> |
| |
| <div class="defun"> |
| — Built-in Function: void <b>__builtin_rx_wait</b> (<var>void</var>)<var><a name="index-g_t_005f_005fbuiltin_005frx_005fwait-3436"></a></var><br> |
| <blockquote><p>Generates the <code>wait</code> machine instruction. |
| </p></blockquote></div> |
| |
| </body></html> |
| |
