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diff --git a/share/doc/gccint/PCH-Target.html b/share/doc/gccint/PCH-Target.html new file mode 100644 index 0000000..26ff1ff --- /dev/null +++ b/share/doc/gccint/PCH-Target.html @@ -0,0 +1,130 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 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 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>GNU Compiler Collection (GCC) Internals: PCH Target</title> + +<meta name="description" content="GNU Compiler Collection (GCC) Internals: PCH Target"> +<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: PCH Target"> +<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-Macros.html#Target-Macros" rel="up" title="Target Macros"> +<link href="C_002b_002b-ABI.html#C_002b_002b-ABI" rel="next" title="C++ ABI"> +<link href="MIPS-Coprocessors.html#MIPS-Coprocessors" rel="previous" title="MIPS Coprocessors"> +<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="PCH-Target"></a> +<div class="header"> +<p> +Next: <a href="C_002b_002b-ABI.html#C_002b_002b-ABI" accesskey="n" rel="next">C++ ABI</a>, Previous: <a href="MIPS-Coprocessors.html#MIPS-Coprocessors" accesskey="p" rel="previous">MIPS Coprocessors</a>, Up: <a href="Target-Macros.html#Target-Macros" accesskey="u" rel="up">Target Macros</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="Parameters-for-Precompiled-Header-Validity-Checking"></a> +<h3 class="section">18.27 Parameters for Precompiled Header Validity Checking</h3> +<a name="index-parameters_002c-precompiled-headers"></a> + +<dl> +<dt><a name="index-TARGET_005fGET_005fPCH_005fVALIDITY"></a>Target Hook: <em>void *</em> <strong>TARGET_GET_PCH_VALIDITY</strong> <em>(size_t *<var>sz</var>)</em></dt> +<dd><p>This hook returns a pointer to the data needed by +<code>TARGET_PCH_VALID_P</code> and sets +‘<samp>*<var>sz</var></samp>’ to the size of the data in bytes. +</p></dd></dl> + +<dl> +<dt><a name="index-TARGET_005fPCH_005fVALID_005fP"></a>Target Hook: <em>const char *</em> <strong>TARGET_PCH_VALID_P</strong> <em>(const void *<var>data</var>, size_t <var>sz</var>)</em></dt> +<dd><p>This hook checks whether the options used to create a PCH file are +compatible with the current settings. It returns <code>NULL</code> +if so and a suitable error message if not. Error messages will +be presented to the user and must be localized using ‘<samp>_(<var>msg</var>)</samp>’. +</p> +<p><var>data</var> is the data that was returned by <code>TARGET_GET_PCH_VALIDITY</code> +when the PCH file was created and <var>sz</var> is the size of that data in bytes. +It’s safe to assume that the data was created by the same version of the +compiler, so no format checking is needed. +</p> +<p>The default definition of <code>default_pch_valid_p</code> should be +suitable for most targets. +</p></dd></dl> + +<dl> +<dt><a name="index-TARGET_005fCHECK_005fPCH_005fTARGET_005fFLAGS"></a>Target Hook: <em>const char *</em> <strong>TARGET_CHECK_PCH_TARGET_FLAGS</strong> <em>(int <var>pch_flags</var>)</em></dt> +<dd><p>If this hook is nonnull, the default implementation of +<code>TARGET_PCH_VALID_P</code> will use it to check for compatible values +of <code>target_flags</code>. <var>pch_flags</var> specifies the value that +<code>target_flags</code> had when the PCH file was created. The return +value is the same as for <code>TARGET_PCH_VALID_P</code>. +</p></dd></dl> + +<dl> +<dt><a name="index-TARGET_005fPREPARE_005fPCH_005fSAVE"></a>Target Hook: <em>void</em> <strong>TARGET_PREPARE_PCH_SAVE</strong> <em>(void)</em></dt> +<dd><p>Called before writing out a PCH file. If the target has some +garbage-collected data that needs to be in a particular state on PCH loads, +it can use this hook to enforce that state. Very few targets need +to do anything here. +</p></dd></dl> + +<hr> +<div class="header"> +<p> +Next: <a href="C_002b_002b-ABI.html#C_002b_002b-ABI" accesskey="n" rel="next">C++ ABI</a>, Previous: <a href="MIPS-Coprocessors.html#MIPS-Coprocessors" accesskey="p" rel="previous">MIPS Coprocessors</a>, Up: <a href="Target-Macros.html#Target-Macros" accesskey="u" rel="up">Target Macros</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> |