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diff --git a/share/doc/gcc/PRU-Options.html b/share/doc/gcc/PRU-Options.html new file mode 100644 index 0000000..a4791d4 --- /dev/null +++ b/share/doc/gcc/PRU-Options.html @@ -0,0 +1,156 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- This file documents the use of the GNU compilers. + +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>Using the GNU Compiler Collection (GCC): PRU Options</title> + +<meta name="description" content="Using the GNU Compiler Collection (GCC): PRU Options"> +<meta name="keywords" content="Using the GNU Compiler Collection (GCC): PRU Options"> +<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="Indices.html#Indices" rel="index" title="Indices"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Submodel-Options.html#Submodel-Options" rel="up" title="Submodel Options"> +<link href="RISC_002dV-Options.html#RISC_002dV-Options" rel="next" title="RISC-V Options"> +<link href="PowerPC-Options.html#PowerPC-Options" rel="previous" title="PowerPC Options"> +<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_US" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="PRU-Options"></a> +<div class="header"> +<p> +Next: <a href="RISC_002dV-Options.html#RISC_002dV-Options" accesskey="n" rel="next">RISC-V Options</a>, Previous: <a href="PowerPC-Options.html#PowerPC-Options" accesskey="p" rel="previous">PowerPC Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indices.html#Indices" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="PRU-Options-1"></a> +<h4 class="subsection">3.19.39 PRU Options</h4> +<a name="index-PRU-Options"></a> + +<p>These command-line options are defined for PRU target: +</p> +<dl compact="compact"> +<dd><a name="index-minrt-1"></a> +</dd> +<dt><code>-minrt</code></dt> +<dd><p>Link with a minimum runtime environment, with no support for static +initializers and constructors. Using this option can significantly reduce +the size of the final ELF binary. Beware that the compiler could still +generate code with static initializers and constructors. It is up to the +programmer to ensure that the source program will not use those features. +</p> +<a name="index-mmcu-2"></a> +</dd> +<dt><code>-mmcu=<var>mcu</var></code></dt> +<dd><p>Specify the PRU MCU variant to use. Check Newlib for the exact list of +supported MCUs. +</p> +<a name="index-mno_002drelax"></a> +</dd> +<dt><code>-mno-relax</code></dt> +<dd><p>Make GCC pass the <samp>--no-relax</samp> command-line option to the linker +instead of the <samp>--relax</samp> option. +</p> +<a name="index-mloop"></a> +</dd> +<dt><code>-mloop</code></dt> +<dd><p>Allow (or do not allow) GCC to use the LOOP instruction. +</p> +<a name="index-mabi-3"></a> +</dd> +<dt><code>-mabi=<var>variant</var></code></dt> +<dd><p>Specify the ABI variant to output code for. <samp>-mabi=ti</samp> selects the +unmodified TI ABI while <samp>-mabi=gnu</samp> selects a GNU variant that copes +more naturally with certain GCC assumptions. These are the differences: +</p> +<dl compact="compact"> +<dt>‘<samp>Function Pointer Size</samp>’</dt> +<dd><p>TI ABI specifies that function (code) pointers are 16-bit, whereas GNU +supports only 32-bit data and code pointers. +</p> +</dd> +<dt>‘<samp>Optional Return Value Pointer</samp>’</dt> +<dd><p>Function return values larger than 64 bits are passed by using a hidden +pointer as the first argument of the function. TI ABI, though, mandates that +the pointer can be NULL in case the caller is not using the returned value. +GNU always passes and expects a valid return value pointer. +</p> +</dd> +</dl> + +<p>The current <samp>-mabi=ti</samp> implementation simply raises a compile error +when any of the above code constructs is detected. As a consequence +the standard C library cannot be built and it is omitted when linking with +<samp>-mabi=ti</samp>. +</p> +<p>Relaxation is a GNU feature and for safety reasons is disabled when using +<samp>-mabi=ti</samp>. The TI toolchain does not emit relocations for QBBx +instructions, so the GNU linker cannot adjust them when shortening adjacent +LDI32 pseudo instructions. +</p> +</dd> +</dl> + +<hr> +<div class="header"> +<p> +Next: <a href="RISC_002dV-Options.html#RISC_002dV-Options" accesskey="n" rel="next">RISC-V Options</a>, Previous: <a href="PowerPC-Options.html#PowerPC-Options" accesskey="p" rel="previous">PowerPC Options</a>, Up: <a href="Submodel-Options.html#Submodel-Options" accesskey="u" rel="up">Submodel Options</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indices.html#Indices" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html> |