<html lang="en"> <head> <title>Alpha 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="AArch64-Built_002din-Functions.html#AArch64-Built_002din-Functions" title="AArch64 Built-in Functions"> <link rel="next" href="Altera-Nios-II-Built_002din-Functions.html#Altera-Nios-II-Built_002din-Functions" title="Altera Nios II Built-in Functions"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- Copyright (C) 1988-2015 Free Software Foundation, Inc. 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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="Alpha-Built-in-Functions"></a> <a name="Alpha-Built_002din-Functions"></a> <p> Next: <a rel="next" accesskey="n" href="Altera-Nios-II-Built_002din-Functions.html#Altera-Nios-II-Built_002din-Functions">Altera Nios II Built-in Functions</a>, Previous: <a rel="previous" accesskey="p" href="AArch64-Built_002din-Functions.html#AArch64-Built_002din-Functions">AArch64 Built-in Functions</a>, Up: <a rel="up" accesskey="u" href="Target-Builtins.html#Target-Builtins">Target Builtins</a> <hr> </div> <h4 class="subsection">6.58.2 Alpha Built-in Functions</h4> <p>These built-in functions are available for the Alpha family of processors, depending on the command-line switches used. <p>The following built-in functions are always available. They all generate the machine instruction that is part of the name. <pre class="smallexample"> long __builtin_alpha_implver (void) long __builtin_alpha_rpcc (void) long __builtin_alpha_amask (long) long __builtin_alpha_cmpbge (long, long) long __builtin_alpha_extbl (long, long) long __builtin_alpha_extwl (long, long) long __builtin_alpha_extll (long, long) long __builtin_alpha_extql (long, long) long __builtin_alpha_extwh (long, long) long __builtin_alpha_extlh (long, long) long __builtin_alpha_extqh (long, long) long __builtin_alpha_insbl (long, long) long __builtin_alpha_inswl (long, long) long __builtin_alpha_insll (long, long) long __builtin_alpha_insql (long, long) long __builtin_alpha_inswh (long, long) long __builtin_alpha_inslh (long, long) long __builtin_alpha_insqh (long, long) long __builtin_alpha_mskbl (long, long) long __builtin_alpha_mskwl (long, long) long __builtin_alpha_mskll (long, long) long __builtin_alpha_mskql (long, long) long __builtin_alpha_mskwh (long, long) long __builtin_alpha_msklh (long, long) long __builtin_alpha_mskqh (long, long) long __builtin_alpha_umulh (long, long) long __builtin_alpha_zap (long, long) long __builtin_alpha_zapnot (long, long) </pre> <p>The following built-in functions are always with <samp><span class="option">-mmax</span></samp> or <samp><span class="option">-mcpu=</span><var>cpu</var></samp> where <var>cpu</var> is <code>pca56</code> or later. They all generate the machine instruction that is part of the name. <pre class="smallexample"> long __builtin_alpha_pklb (long) long __builtin_alpha_pkwb (long) long __builtin_alpha_unpkbl (long) long __builtin_alpha_unpkbw (long) long __builtin_alpha_minub8 (long, long) long __builtin_alpha_minsb8 (long, long) long __builtin_alpha_minuw4 (long, long) long __builtin_alpha_minsw4 (long, long) long __builtin_alpha_maxub8 (long, long) long __builtin_alpha_maxsb8 (long, long) long __builtin_alpha_maxuw4 (long, long) long __builtin_alpha_maxsw4 (long, long) long __builtin_alpha_perr (long, long) </pre> <p>The following built-in functions are always with <samp><span class="option">-mcix</span></samp> or <samp><span class="option">-mcpu=</span><var>cpu</var></samp> where <var>cpu</var> is <code>ev67</code> or later. They all generate the machine instruction that is part of the name. <pre class="smallexample"> long __builtin_alpha_cttz (long) long __builtin_alpha_ctlz (long) long __builtin_alpha_ctpop (long) </pre> <p>The following built-in functions are available on systems that use the OSF/1 PALcode. Normally they invoke the <code>rduniq</code> and <code>wruniq</code> PAL calls, but when invoked with <samp><span class="option">-mtls-kernel</span></samp>, they invoke <code>rdval</code> and <code>wrval</code>. <pre class="smallexample"> void *__builtin_thread_pointer (void) void __builtin_set_thread_pointer (void *) </pre> </body></html>