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class="screen-reader-text">Search</label></i> </button> </form> </li></ul></div> </nav> </div> </div> </header> <div id="content" class="site-content"> <div class="container"> <div id="primary" class="content-area"> <main id="main" class="site-main" role="main"> <article id="post-44846" class="entry post-44846 post type-post status-publish format-standard hentry category-uncategorized category-wolssl"> <header class="entry-header"> <h1 class="entry-title">Changes In wolfSSL for ARM Thumb-2 Builds</h1> <div class="entry-meta"> <li class="posted-on"> <span class="meta-icon north-icon-calendar" aria-hidden="true"></span> <a href="https://www.wolfssl.com/changes-in-wolfssl-for-arm-thumb-2-builds/"> <time class="entry-date published" datetime="2024-11-12T11:00:05-07:00">November 12, 2024</time><time class="updated" datetime="2024-10-31T14:10:24-06:00">October 31, 2024</time> </a> </li> </div> </header> <div class="entry-content"> <p>With wolfSSL release 5.7.4 we added the macro <code>WOLFSSL_ARMASM_THUMB2</code>. This macro can be defined to enable Thumb-2 ARM instruction optimizations and replaces the previous attempted autodetect on the macros <code>__arm__</code> and <code>__thumb__</code>. Giving users complete control over which ARM assembly optimizations are compiled and used.</p> <p>When building for Thumb-2 the source files beginning with thumb2-* should additionally be compiled in. If WOLFSSL_ARMASM_THUMB2 is not used then the armv8-32-* files will be used. These files are located in wolfcrypt/src/port/arm/.</p> <p>The benefit of now having <code>WOLFSSL_ARMASM_THUMB2</code> is that users can place all files in wolfcrypt/src/port/arm/ to be compiled and use the macro gate for selecting if the Thumb-2 section is optionally compiled or ARM32 implementation is. The armv8-32- code is very similar to the thumb2- code, but Thumb-2 is smaller in size.</p> <p>For assistance with ARM optimization builds contact us at <a href="mailto:support@wolfssl.com">support@wolfSSL.com</a>.</p> <p>If you have questions about any of the above, please contact us at <a href="mailto:facts@wolfssl.com">facts@wolfSSL.com</a> or <a href="tel:14252458247">+1 425 245 8247</a>.</p> <p><strong><a href="https://www.wolfssl.com/download/">Download</a> wolfSSL Now</strong></p> </div> <footer class="entry-footer"> <span class="cat-links">Posted in <a href="https://www.wolfssl.com/category/uncategorized/" rel="category tag">Uncategorized</a>, <a href="https://www.wolfssl.com/category/wolssl/" rel="category tag">wolfSSL/ wolfCrypt</a></span> </footer> </article> </main> </div> <div id="secondary" class="widget-area" role="complementary" aria-label="Main Sidebar"> </div> </div> </div> <footer id="colophon" class="site-footer unconstrained-footer" role="contentinfo"> <div class="container"> </div> <div class="site-info"> <div class="container"> <div class="banner"> <a href="https://www.wolfssl.com/frequently-asked-questions-faq/"> <h1>wolfSSL FAQ</h1> </a> </div> <div class="banner"> <a href="https://www.wolfssl.com/products/curl/"> <h1>wolfSSL curl</h1> </a> </div> <a href="https://www.wolfssl.com/docs/tls13/"> <img id="tls13Banner" src="/wordpress/wp-content/uploads/2018/08/TLS13-now-avail.png"> </a> <div class="banner"> <a href="https://www.wolfssl.com/events/"><h1>Upcoming Events</h1></a> </div> <div id="lastBanner"> <a href="https://www.wolfssl.com/community/partner-network/"><h1>wolfSSL Partners</h1></a> </div> <div id="footerProducts">   <div class="footerBox"> <a href="/products/wolfssl/"> <h2>wolfSSL SSL/TLS Library</h2> <p>The wolfSSL lightweight TLS library supports TLS 1.3 and DTLS 1.3 on both client and server sides, features progressive algorithm support, is optimized for footprint and runtime memory use, and more!</p> <a/> </div> <div class="footerBox"> <a href="/products/wolfcrypt/"> <h2>wolfCrypt Crypto Engine</h2> <p>The wolfCrypt Crypto engine is a lightweight, embeddable, and easy-to-configure crypto library with a strong focus on portability, modularity, security, and feature set. 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