93 lines
4.8 KiB
HTML
93 lines
4.8 KiB
HTML
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<html lang="en">
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<head>
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<title>MSP430 - Untitled</title>
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<meta http-equiv="Content-Type" content="text/html">
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<meta name="description" content="Untitled">
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<meta name="generator" content="makeinfo 4.13">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Machine-Dependent.html#Machine-Dependent" title="Machine Dependent">
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<link rel="prev" href="MMIX.html#MMIX" title="MMIX">
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<link rel="next" href="NDS32.html#NDS32" title="NDS32">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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<!--
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This file documents the GNU linker LD
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(GNU Toolchain for the A-profile Architecture 9.2-2019.12 (arm-9.10))
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version 2.33.1.
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled ``GNU Free Documentation License''.-->
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<style type="text/css"><!--
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--></style>
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</head>
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<body>
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<div class="node">
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<a name="MSP430"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="NDS32.html#NDS32">NDS32</a>,
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Previous: <a rel="previous" accesskey="p" href="MMIX.html#MMIX">MMIX</a>,
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Up: <a rel="up" accesskey="u" href="Machine-Dependent.html#Machine-Dependent">Machine Dependent</a>
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<hr>
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</div>
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<h3 class="section">4.8 <code>ld</code> and MSP430</h3>
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<p>For the MSP430 it is possible to select the MPU architecture. The flag ‘<samp><span class="samp">-m [mpu type]</span></samp>’
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will select an appropriate linker script for selected MPU type. (To get a list of known MPUs
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just pass ‘<samp><span class="samp">-m help</span></samp>’ option to the linker).
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<p><a name="index-MSP430-extra-sections-694"></a>The linker will recognize some extra sections which are MSP430 specific:
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<dl>
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<dt><code>‘</code><samp><span class="samp">.vectors</span></samp><code>’</code><dd>Defines a portion of ROM where interrupt vectors located.
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<br><dt><code>‘</code><samp><span class="samp">.bootloader</span></samp><code>’</code><dd>Defines the bootloader portion of the ROM (if applicable). Any code
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in this section will be uploaded to the MPU.
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<br><dt><code>‘</code><samp><span class="samp">.infomem</span></samp><code>’</code><dd>Defines an information memory section (if applicable). Any code in
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this section will be uploaded to the MPU.
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<br><dt><code>‘</code><samp><span class="samp">.infomemnobits</span></samp><code>’</code><dd>This is the same as the ‘<samp><span class="samp">.infomem</span></samp>’ section except that any code
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in this section will not be uploaded to the MPU.
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<br><dt><code>‘</code><samp><span class="samp">.noinit</span></samp><code>’</code><dd>Denotes a portion of RAM located above ‘<samp><span class="samp">.bss</span></samp>’ section.
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<p>The last two sections are used by gcc.
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</dl>
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<a name="index-MSP430-Options-695"></a>
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<a name="index-g_t_002d_002dcode_002dregion-696"></a>
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<dl><dt><samp><span class="option">--code-region=[either,lower,upper,none]</span></samp><dd>This will transform .text* sections to [either,lower,upper].text* sections. The
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argument passed to GCC for -mcode-region is propagated to the linker
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using this option.
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<p><a name="index-g_t_002d_002ddata_002dregion-697"></a><br><dt><samp><span class="option">--data-region=[either,lower,upper,none]</span></samp><dd>This will transform .data*, .bss* and .rodata* sections to
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[either,lower,upper].[data,bss,rodata]* sections. The argument passed to GCC
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for -mdata-region is propagated to the linker using this option.
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<p><a name="index-g_t_002d_002ddisable_002dsec_002dtransformation-698"></a><br><dt><samp><span class="option">--disable-sec-transformation</span></samp><dd>Prevent the transformation of sections as specified by the <code>--code-region</code>
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and <code>--data-region</code> options.
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This is useful if you are compiling and linking using a single call to the GCC
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wrapper, and want to compile the source files using -m[code,data]-region but
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not transform the sections for prebuilt libraries and objects.
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</dl>
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</body></html>
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