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<a href="https://gitlab.rtems.org/matteo.concas">Matteo Concas</a> created an issue: <a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5616">#5616</a>
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Assignee: Matteo Concas
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<h2 id="user-content-summary" dir="auto" style="margin-top: 0; margin-bottom: 10px;" align="initial">Summary<a href="#summary" aria-label="Link to heading 'Summary'" data-heading-content="Summary" class="anchor" style="margin-top: 0;"></a>
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<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Enabling <code style="font-size: 90%; color: #18171d; word-wrap: break-word; background-color: #ececef; border-radius: .25rem; margin-top: 0; font-weight: inherit; overflow-wrap: break-word; white-space: break-spaces; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: keep-all; padding: 0.125rem 0.25rem;">RTEMS_PROFILING</code> when building a SPARC BSP will lead to some undefined behavior. I have seen unaligned accesses:</p>
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<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style="display: block; font-size: 14px; color: #3a383f; line-height: 1.6em; overflow-x: auto; border-radius: .25rem; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 1rem; padding: 12px; border: 1px solid #dcdcde;"><code style="font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; background-color: inherit; border-radius: .25rem; white-space: pre; margin-top: 0; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; overflow-wrap: normal; padding: unset;"><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;">grmon4> load /home/matteo/dev/gsoc/rtems-net-services/build/sparc-rtems7-gr765/iperf3test01.exe; run</span>
<span id="LC2" class="line" lang="plaintext"> 0 .text 2.4MB / 2.4MB [===============>] 100%</span>
<span id="LC3" class="line" lang="plaintext"> 25ce40 .tdata 20B [===============>] 100%</span>
<span id="LC4" class="line" lang="plaintext"> 25ce58 .rtemsroset 3.3kB / 3.3kB [===============>] 100%</span>
<span id="LC5" class="line" lang="plaintext"> 26a340 .data 93.6kB / 93.6kB [===============>] 100%</span>
<span id="LC6" class="line" lang="plaintext"> 2819c0 .rtemsrwset 1.1MB / 1.1MB [===============>] 100%</span>
<span id="LC7" class="line" lang="plaintext"> Total size: 3.55MB (519.77kbit/s)</span>
<span id="LC8" class="line" lang="plaintext"> Entry point 0x00000000</span>
<span id="LC9" class="line" lang="plaintext"> Image /home/matteo/dev/gsoc/rtems-net-services/build/sparc-rtems7-gr740/iperf3test01.exe loaded</span>
<span id="LC10" class="line" lang="plaintext"></span>
<span id="LC11" class="line" lang="plaintext"></span>
<span id="LC12" class="line" lang="plaintext">*** BEGIN OF TEST libBSD IPERF3 1 ***</span>
<span id="LC13" class="line" lang="plaintext">*** TEST VERSION: 7.0.0</span>
<span id="LC14" class="line" lang="plaintext">*** TEST STATE: EXPECTED_PASS</span>
<span id="LC15" class="line" lang="plaintext">*** TEST BUILD: RTEMS_POSIX_API RTEMS_PROFILING</span>
<span id="LC16" class="line" lang="plaintext">*** TEST TOOLS: 16.1.0 20260430 (RTEMS 7, RSB 348a70cf182d9e3452504757f53a78719190dc0b, Newlib a0ccec7e)</span>
<span id="LC17" class="line" lang="plaintext">nexus0: <RTEMS Nexus device></span>
<span id="LC18" class="line" lang="plaintext">grethtwo0: <Ethernet Gbit MAC> on nexus0</span>
<span id="LC19" class="line" lang="plaintext">info: grethtwo0: Ethernet address: 0e:b0:ba:5e:ba:11</span>
<span id="LC20" class="line" lang="plaintext">info: lo0: link state changed to UP</span>
<span id="LC21" class="line" lang="plaintext">greth: driver attached</span>
<span id="LC22" class="line" lang="plaintext">**** PHY ****</span>
<span id="LC23" class="line" lang="plaintext">Vendor: 885 Device: 22 Revision: 2</span>
<span id="LC24" class="line" lang="plaintext">Current Operating Mode: 1000 Mbit Full Duplex</span>
<span id="LC25" class="line" lang="plaintext">Autonegotiation Time: 7528ms</span>
<span id="LC26" class="line" lang="plaintext">Connecting to host 172.16.103.1, port 5201</span>
<span id="LC27" class="line" lang="plaintext">[ 28] local 172.16.103.2 port 13962 connected to 172.16.103.1 port 5201</span>
<span id="LC28" class="line" lang="plaintext"> Error mode (tt = 0x07, mem address not aligned)</span>
<span id="LC29" class="line" lang="plaintext"> Hint: Before trap (tt = 0x89, trap instruction)</span>
<span id="LC30" class="line" lang="plaintext"> 0x001e1a48: 81c44000 jmp %l1</span></code></pre>
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<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">or privileged instruction errors:</p>
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<pre class="code highlight js-syntax-highlight language-plaintext" v-pre="true" style="display: block; font-size: 14px; color: #3a383f; line-height: 1.6em; overflow-x: auto; border-radius: .25rem; position: relative; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 1rem; padding: 12px; border: 1px solid #dcdcde;"><code style="font-size: inherit; color: inherit; word-wrap: normal; word-break: keep-all; background-color: inherit; border-radius: .25rem; white-space: pre; margin-top: 0; font-family: "GitLab Mono", "JetBrains Mono", "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; font-variant-ligatures: none; overflow-wrap: normal; padding: unset;"><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;">[...]</span>
<span id="LC2" class="line" lang="plaintext">[ 28] local 172.16.103.2 port 36999 connected to 172.16.103.1 port 5201</span>
<span id="LC3" class="line" lang="plaintext"> Error mode (tt = 0x03, privileged instruction)</span>
<span id="LC4" class="line" lang="plaintext"> Hint: Before trap (tt = 0x89, trap instruction)</span>
<span id="LC5" class="line" lang="plaintext"> 0x001e19d8: a9500000 mov %wim, %l4</span></code></pre>
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<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">The common element here is that the local registers are not restored properly or overwritten somehow.</p>
<p dir="auto" style="color: #3a383f; margin: 0;" align="initial">I will try to run the RTEMS testsuite with profiling enabled to see if any test becomes a fail with it.</p>
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