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<h3>
Arun Raghavan pushed to branch master
at <a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio">PulseAudio / pulseaudio</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/commit/5c0ad422a818520337108acd700b1b4744588260">5c0ad422</a></strong>
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<span>by Tanu Kaskinen</span>
<i>at 2020-07-20T13:27:44+00:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">remap_neon: use register r12 instead of r7
When the Thumb instructions set is used and frame pointers are enabled
(-fno-omit-frame-pointer), r7 can't be used, because it's used for the
frame pointer. Trying to use r7 caused the compilation to fail.
Thanks to Andre McCurdy for suggesting[1] this fix, all I had to do was to
test that it works. The code builds now, and cpu-remap-test also
succeeds.
[1] https://lists.openembedded.org/g/openembedded-core/message/136786
</pre>
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<h4>1 changed file:</h4>
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<a href="#80c5c276147d53d6b1ebb8d75d5150298488d6e3">
src/pulsecore/remap_neon.c
</a>
</li>
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<h4>Changes:</h4>
<li id="80c5c276147d53d6b1ebb8d75d5150298488d6e3">
<a href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/commit/5c0ad422a818520337108acd700b1b4744588260#80c5c276147d53d6b1ebb8d75d5150298488d6e3"><strong>src/pulsecore/remap_neon.c</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -52,11 +52,15 @@ static void remap_mono_to_stereo_float32ne_generic_arm(pa_remap_t *m, float *dst</td>
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<pre style="margin: 0;"> <span id="LC52" class="line" lang="c"> <span class="n" style="color: #333;">__asm__</span> <span class="n" style="color: #333;">__volatile__</span> <span class="p">(</span></span>
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<pre style="margin: 0;"> <span id="LC53" class="line" lang="c"> <span class="s" style="color: #d14;">"ldm %[src]!, {r4,r6} </span><span class="se" style="color: #d14;">\n\t</span><span class="s" style="color: #d14;">"</span></span>
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<pre style="margin: 0;"> <span id="LC54" class="line" lang="c"> <span class="s" style="color: #d14;">"mov r5, r4 </span><span class="se" style="color: #d14;">\n\t</span><span class="s" style="color: #d14;">"</span></span>
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<pre style="margin: 0;">-<span id="LC55" class="line" lang="c"> <span class="s" style="color: #d14;">"mov r7, r6 </span><span class="se" style="color: #d14;">\n\t</span><span class="s" style="color: #d14;">"</span></span>
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<pre style="margin: 0;">-<span id="LC56" class="line" lang="c"> <span class="s" style="color: #d14;">"stm %[dst]!, {r4-r7} </span><span class="se" style="color: #d14;">\n\t</span><span class="s" style="color: #d14;">"</span></span>
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<pre style="margin: 0;">+<span id="LC55" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC56" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* We use r12 instead of r7 here, because r7 is reserved for the</span></span>
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<pre style="margin: 0;">+<span id="LC57" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * frame pointer when using Thumb. */</span></span>
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<pre style="margin: 0;">+<span id="LC58" class="line" lang="c"> <span class="s" style="color: #d14;">"mov r12, r6 </span><span class="se" style="color: #d14;">\n\t</span><span class="s" style="color: #d14;">"</span></span>
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<pre style="margin: 0;">+<span id="LC59" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC60" class="line" lang="c"> <span class="s" style="color: #d14;">"stm %[dst]!, {r4-r6,r12} </span><span class="se" style="color: #d14;">\n\t</span><span class="s" style="color: #d14;">"</span></span>
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<pre style="margin: 0;"> <span id="LC61" class="line" lang="c"> <span class="o" style="font-weight: 600;">:</span> <span class="p">[</span><span class="n" style="color: #333;">dst</span><span class="p">]</span> <span class="s" style="color: #d14;">"+r"</span> <span class="p">(</span><span class="n" style="color: #333;">dst</span><span class="p">),</span> <span class="p">[</span><span class="n" style="color: #333;">src</span><span class="p">]</span> <span class="s" style="color: #d14;">"+r"</span> <span class="p">(</span><span class="n" style="color: #333;">src</span><span class="p">)</span> <span class="cm" style="color: #998; font-style: italic;">/* output operands */</span></span>
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<pre style="margin: 0;"> <span id="LC62" class="line" lang="c"> <span class="o" style="font-weight: 600;">:</span> <span class="cm" style="color: #998; font-style: italic;">/* input operands */</span></span>
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<pre style="margin: 0;">-<span id="LC59" class="line" lang="c"> <span class="o" style="font-weight: 600;">:</span> <span class="s" style="color: #d14;">"memory"</span><span class="p">,</span> <span class="s" style="color: #d14;">"r4"</span><span class="p">,</span> <span class="s" style="color: #d14;">"r5"</span><span class="p">,</span> <span class="s" style="color: #d14;">"r6"</span><span class="p">,</span> <span class="s" style="color: #d14;">"r<span class="idiff left right">7</span>"</span> <span class="cm" style="color: #998; font-style: italic;">/* clobber list */</span></span>
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<pre style="margin: 0;">+<span id="LC63" class="line" lang="c"> <span class="o" style="font-weight: 600;">:</span> <span class="s" style="color: #d14;">"memory"</span><span class="p">,</span> <span class="s" style="color: #d14;">"r4"</span><span class="p">,</span> <span class="s" style="color: #d14;">"r5"</span><span class="p">,</span> <span class="s" style="color: #d14;">"r6"</span><span class="p">,</span> <span class="s" style="color: #d14;">"r<span class="idiff left right">12</span>"</span> <span class="cm" style="color: #998; font-style: italic;">/* clobber list */</span></span>
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<pre style="margin: 0;"> <span id="LC64" class="line" lang="c"> <span class="p">);</span></span>
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<pre style="margin: 0;"> <span id="LC65" class="line" lang="c"> <span class="p">}</span></span>
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