<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Hi,</div><div class=""><br class=""></div><div class="">Ever since WebAssembly became a thing, I was wondering if this could become a target for VMs. People are already compiling FFMPEG and other complex tools. So I thought I would try as well.</div><div class=""><br class=""></div><div class="">So here I am to report to whom it may concern: OSVM compiles to WebAssembly, starts up (nearly), then looping infinitely</div><div class="">Meaning: The VM mmaps the image file, loads plugins (SecurityPlugin made EXTERNAL), starts interpreter loop, but then loops the same bytecode sequence forever</div><div class=""><br class=""></div>Code lives at <a href="https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm" class="">https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm</a> if you want to try it out.<div class=""><br class=""><div class="">Below is the current Readme, including a short list of issues. Maybe some of you could give me a hint?</div><div class=""><br class=""></div><div class="">Cheers,</div><div class="">Manuel<br class=""><div class=""><br class=""></div><div class=""><h1 dir="auto" style="box-sizing: border-box; margin-right: 0px; margin-bottom: 16px; margin-left: 0px; line-height: 1.25; padding-bottom: 0.3em; border-bottom: 1px solid var(--color-border-muted); color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; margin-top: 0px !important;" class="">pharo.stack.spur.wasm</h1><p dir="auto" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class="">Compiles OSVM Stack interpreter to WebAssembly using the Emscripten compiler. Emscripten can be used as a drop-in replacement for gcc/clang and cmake. Based on MinHeadless Linux 32bit sources, as Emscripten provides Linux-like environment (pthreads, nanosleep, dlopen, file system). Check the latest few commits of maenu to see changed files.</p><h2 dir="auto" style="box-sizing: border-box; margin-top: 24px; margin-bottom: 16px; line-height: 1.25; padding-bottom: 0.3em; border-bottom: 1px solid var(--color-border-muted); color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><a id="user-content-current-issues" class="anchor" aria-hidden="true" href="https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm#current-issues" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s; float: left; padding-right: 4px; margin-left: -20px; line-height: 1;"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Current issues</h2><ul dir="auto" style="box-sizing: border-box; padding-left: 2em; margin-top: 0px; margin-bottom: 16px; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><li style="box-sizing: border-box;" class=""><p dir="auto" style="box-sizing: border-box; margin-top: 16px; margin-bottom: 16px;" class="">Most adjustments are just putting EMSCRIPTEN in a macro or script. Should be fine, but should be tested to not interfere with other builds.</p></li><li style="box-sizing: border-box; margin-top: 0.25em;" class=""><p dir="auto" style="box-sizing: border-box; margin-top: 16px; margin-bottom: 16px;" class="">Compiles and runs, but seems to be stuck in initial GC and Heartbeat. Those could be related to incorrect get/set64() implementation.</p></li><li style="box-sizing: border-box; margin-top: 0.25em;" class=""><p dir="auto" style="box-sizing: border-box; margin-top: 16px; margin-bottom: 16px;" class="">Removed mmap address hint, as it caused errors.</p></li><li style="box-sizing: border-box; margin-top: 0.25em;" class=""><p dir="auto" style="box-sizing: border-box; margin-top: 16px; margin-bottom: 16px;" class="">Using argv <code style="box-sizing: border-box; font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace; font-size: 13.6px; padding: 0.2em 0.4em; margin: 0px; background-color: var(--color-neutral-muted); border-radius: 6px;" class="">eval '1 + 3'</code> to do a simple eval does not terminate.</p></li><li style="box-sizing: border-box; margin-top: 0.25em;" class=""><p dir="auto" style="box-sizing: border-box; margin-top: 16px; margin-bottom: 16px;" class="">Interpreter repeats these bytecodes forever (what is this?):</p></li></ul><div class="overflow-auto snippet-clipboard-content position-relative notranslate" style="box-sizing: border-box; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; position: relative !important; overflow: auto !important;"><pre class="notranslate" style="box-sizing: border-box; font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace; font-size: 13.6px; margin-top: 0px; margin-bottom: 16px; overflow-wrap: normal; padding: 16px; overflow: auto; line-height: 1.45; background-color: var(--color-canvas-subtle); border-radius: 6px;"><code style="box-sizing: border-box; font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace; font-size: 13.6px; padding: 0px; margin: 0px; border-radius: 6px; word-break: normal; border: 0px; display: inline; overflow: visible; line-height: inherit; overflow-wrap: normal;" class="">332
384
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501
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</code></pre></div><h2 dir="auto" style="box-sizing: border-box; margin-top: 24px; margin-bottom: 16px; line-height: 1.25; padding-bottom: 0.3em; border-bottom: 1px solid var(--color-border-muted); color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><a id="user-content-build--run" class="anchor" aria-hidden="true" href="https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm#build--run" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s; float: left; padding-right: 4px; margin-left: -20px; line-height: 1;"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Build & Run</h2><h3 dir="auto" style="box-sizing: border-box; margin-top: 24px; margin-bottom: 16px; font-size: 1.25em; line-height: 1.25; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><a id="user-content-1-install-emscripten" class="anchor" aria-hidden="true" href="https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm#1-install-emscripten" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s; float: left; padding-right: 4px; margin-left: -20px; line-height: 1;"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>1. Install Emscripten</h3><p dir="auto" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class="">I installed <a href="https://emscripten.org/docs/getting_started/downloads.html" rel="nofollow" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s;" class="">Emscripten SDK</a> to get an all-in-one package.</p><h3 dir="auto" style="box-sizing: border-box; margin-top: 24px; margin-bottom: 16px; font-size: 1.25em; line-height: 1.25; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><a id="user-content-2-grab-an-image" class="anchor" aria-hidden="true" href="https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm#2-grab-an-image" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s; float: left; padding-right: 4px; margin-left: -20px; line-height: 1;"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>2. Grab an image</h3><p dir="auto" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class="">Grab a 32bit Smalltalk image and but it in the <code style="box-sizing: border-box; font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace; font-size: 13.6px; padding: 0.2em 0.4em; margin: 0px; background-color: var(--color-neutral-muted); border-radius: 6px;" class="">image</code> folder. I used Pharo 9.</p><div class="overflow-auto snippet-clipboard-content position-relative notranslate" style="box-sizing: border-box; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; position: relative !important; overflow: auto !important;"><pre class="notranslate" style="box-sizing: border-box; font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace; font-size: 13.6px; margin-top: 0px; margin-bottom: 16px; overflow-wrap: normal; padding: 16px; overflow: auto; line-height: 1.45; background-color: var(--color-canvas-subtle); border-radius: 6px;"><code style="box-sizing: border-box; font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace; font-size: 13.6px; padding: 0px; margin: 0px; border-radius: 6px; word-break: normal; border: 0px; display: inline; overflow: visible; line-height: inherit; overflow-wrap: normal;" class="">cd building/minheadless.cmake/x86/pharo.stack.spur.wasm
mkdir image
cd image
curl <a href="https://get.pharo.org/32/90" class="">https://get.pharo.org/32/90</a> | bash
</code></pre></div><h3 dir="auto" style="box-sizing: border-box; margin-top: 24px; margin-bottom: 16px; font-size: 1.25em; line-height: 1.25; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><a id="user-content-3-build-vm" class="anchor" aria-hidden="true" href="https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm#3-build-vm" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s; float: left; padding-right: 4px; margin-left: -20px; line-height: 1;"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>3. Build VM</h3><p dir="auto" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><code style="box-sizing: border-box; font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace; font-size: 13.6px; padding: 0.2em 0.4em; margin: 0px; background-color: var(--color-neutral-muted); border-radius: 6px;" class="">./mvm_configure_variant debug Debug && make -C debug install</code></p><h3 dir="auto" style="box-sizing: border-box; margin-top: 24px; margin-bottom: 16px; font-size: 1.25em; line-height: 1.25; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><a id="user-content-4-run-a-web-server" class="anchor" aria-hidden="true" href="https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm#4-run-a-web-server" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s; float: left; padding-right: 4px; margin-left: -20px; line-height: 1;"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>4. Run a web server</h3><p dir="auto" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><code style="box-sizing: border-box; font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace; font-size: 13.6px; padding: 0.2em 0.4em; margin: 0px; background-color: var(--color-neutral-muted); border-radius: 6px;" class="">emrun --port 9090 --serve_root ../../../../ --no_browser .</code></p><h3 dir="auto" style="box-sizing: border-box; margin-top: 24px; margin-bottom: 16px; font-size: 1.25em; line-height: 1.25; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><a id="user-content-5-launch-vm" class="anchor" aria-hidden="true" href="https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm#5-launch-vm" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s; float: left; padding-right: 4px; margin-left: -20px; line-height: 1;"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>5. Launch VM</h3><p dir="auto" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><a href="http://localhost:9090/building/minheadless.cmake/x86/pharo.stack.spur.wasm/debug/dist/squeak.html" rel="nofollow" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s;" class="">http://localhost:9090/building/minheadless.cmake/x86/pharo.stack.spur.wasm/debug/dist/squeak.html</a></p><h3 dir="auto" style="box-sizing: border-box; margin-top: 24px; margin-bottom: 16px; font-size: 1.25em; line-height: 1.25; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><a id="user-content-6-inspect-running-vm" class="anchor" aria-hidden="true" href="https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm#6-inspect-running-vm" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s; float: left; padding-right: 4px; margin-left: -20px; line-height: 1;"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>6. Inspect running VM</h3><p dir="auto" style="box-sizing: border-box; margin-top: 0px; margin-bottom: 16px; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class="">The VM is compiled with DWARF debug information, which is understood by the Chrome debugger. So we can step through the C sources of the WebAssembly, pretty nifty.</p><h2 dir="auto" style="box-sizing: border-box; margin-top: 24px; margin-bottom: 16px; line-height: 1.25; padding-bottom: 0.3em; border-bottom: 1px solid var(--color-border-muted); color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial;" class=""><a id="user-content-resources" class="anchor" aria-hidden="true" href="https://github.com/maenu/opensmalltalk-vm/tree/Cog/building/minheadless.cmake/x86/pharo.stack.spur.wasm#resources" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s; float: left; padding-right: 4px; margin-left: -20px; line-height: 1;"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Resources</h2><ul dir="auto" style="box-sizing: border-box; padding-left: 2em; margin-top: 0px; color: rgb(36, 41, 47); font-family: -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji"; font-size: 16px; font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; margin-bottom: 0px !important;" class=""><li style="box-sizing: border-box;" class=""><a href="https://webassembly.org/getting-started/developers-guide/" rel="nofollow" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s;" class="">Inspect WebAssembly (at the bottom)</a></li><li style="box-sizing: border-box; margin-top: 0.25em;" class=""><a href="https://emscripten.org/docs/porting/index.html" rel="nofollow" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s;" class="">Emscripten doc (Porting)</a></li><li style="box-sizing: border-box; margin-top: 0.25em;" class=""><a href="https://emsettings.surma.technology/" rel="nofollow" style="box-sizing: border-box; color: var(--color-accent-fg); text-decoration: none; transition: color 80ms cubic-bezier(0.33, 1, 0.68, 1) 0s, background-color 0s ease 0s, box-shadow 0s ease 0s, border-color 0s ease 0s;" class="">Emscripten settings</a></li></ul><div class=""><br class=""></div></div></div></div></body></html>