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<div class="moz-cite-prefix">On 10/28/2017 01:40 AM, Khem Raj wrote:<br>
</div>
<blockquote
cite="mid:CAMKF1sqQ6E6vKD8rtpF4MXR=6ceOWKnmU9h5gLMWQFc87xSjZw@mail.gmail.com"
type="cite">
<pre wrap="">On Fri, Oct 27, 2017 at 2:43 AM, Chen Qi <a class="moz-txt-link-rfc2396E" href="mailto:Qi.Chen@windriver.com"><Qi.Chen@windriver.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">We've observed strange behaviour of `systemctl status <xxx> on qemumips64.
The output of the command is like `systemctl show <xxx>', which is incorrect.
This patch is from gcc bugzilla's attachment.
<a class="moz-txt-link-freetext" href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81803">https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81803</a>
The patch hasn't been merged into gcc. But it does solve the above problem.
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<pre wrap="">
This looks ok. Can you help by providing your testing results to gcc bugzilla
so the patch can then be submitted to gcc ml.
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<br>
Some updates in this issue.<br>
<br>
1) I've provided information in gcc bugzilla. The author says that
he's going to submit the patch to gcc mailing list.<br>
<br>
2) I've update remote branch to fix a typo ('mips4' -->
'mips64').
<pre wrap=""> git://git.pokylinux.org/poky-contrib ChenQi/bug12266
<a class="moz-txt-link-freetext" href="http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=ChenQi/bug12266">http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=ChenQi/bug12266</a></pre>
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3) 'core-image-sato + testimage' has been tested on other qemu
machines including qemux86-64, qemux86, qemumips, qemuppc,
qemuarm64.<br>
<br>
Best Regards,<br>
Chen Qi<br>
<br>
<blockquote
cite="mid:CAMKF1sqQ6E6vKD8rtpF4MXR=6ceOWKnmU9h5gLMWQFc87xSjZw@mail.gmail.com"
type="cite">
<pre wrap="">
</pre>
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<pre wrap="">Signed-off-by: Chen Qi <a class="moz-txt-link-rfc2396E" href="mailto:Qi.Chen@windriver.com"><Qi.Chen@windriver.com></a>
---
meta/recipes-devtools/gcc/gcc-7.2.inc | 1 +
.../fix-miscompilation-for-O1-on-mips64el.patch | 35 ++++++++++++++++++++++
2 files changed, 36 insertions(+)
create mode 100644 meta/recipes-devtools/gcc/gcc-7.2/fix-miscompilation-for-O1-on-mips64el.patch
diff --git a/meta/recipes-devtools/gcc/gcc-7.2.inc b/meta/recipes-devtools/gcc/gcc-7.2.inc
index 5883bc6..04edad7 100644
--- a/meta/recipes-devtools/gcc/gcc-7.2.inc
+++ b/meta/recipes-devtools/gcc/gcc-7.2.inc
@@ -75,6 +75,7 @@ SRC_URI = "\
<a class="moz-txt-link-freetext" href="file://0048-gcc-Enable-static-PIE.patch">file://0048-gcc-Enable-static-PIE.patch</a> \
<a class="moz-txt-link-freetext" href="file://fix-segmentation-fault-precompiled-hdr.patch">file://fix-segmentation-fault-precompiled-hdr.patch</a> \
<a class="moz-txt-link-freetext" href="file://0050-RISC-V-Handle-non-legitimate-address-in-riscv_legiti.patch">file://0050-RISC-V-Handle-non-legitimate-address-in-riscv_legiti.patch</a> \
+ <a class="moz-txt-link-freetext" href="file://fix-miscompilation-for-O1-on-mips64el.patch">file://fix-miscompilation-for-O1-on-mips64el.patch</a> \
${BACKPORTS} \
"
BACKPORTS = "\
diff --git a/meta/recipes-devtools/gcc/gcc-7.2/fix-miscompilation-for-O1-on-mips64el.patch b/meta/recipes-devtools/gcc/gcc-7.2/fix-miscompilation-for-O1-on-mips64el.patch
new file mode 100644
index 0000000..28020b0
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-7.2/fix-miscompilation-for-O1-on-mips64el.patch
@@ -0,0 +1,35 @@
+This patch comes from <a class="moz-txt-link-freetext" href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81803">https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81803</a>
+
+Author: mpf <mpf@138bc75d-0d04-0410-961f-82ee72b054a4>
+
+This patch hasn't been merged into gcc. But it does solve the problem of
+strange behaviour of `systemd status <xxx>' on qemumips64.
+
+Upstream-Status: Pending [Taken from gcc bugzilla's attachment]
+
+Signed-off-by: Chen Qi <a class="moz-txt-link-rfc2396E" href="mailto:Qi.Chen@windriver.com"><Qi.Chen@windriver.com></a>
+---
+ gcc/lra-constraints.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c
+index c8bc9b9a66f..6d319662b09 100644
+--- a/gcc/lra-constraints.c
++++ b/gcc/lra-constraints.c
+@@ -4235,7 +4235,12 @@ curr_insn_transform (bool check_only_p)
+ && (goal_alt[i] == NO_REGS
+ || (simplify_subreg_regno
+ (ira_class_hard_regs[goal_alt[i]][0],
+- GET_MODE (reg), byte, mode) >= 0)))))
++ GET_MODE (reg), byte, mode) >= 0))))
++ || (type != OP_IN
++ && GET_MODE_PRECISION (mode)
++ < GET_MODE_PRECISION (GET_MODE (reg))
++ && GET_MODE_SIZE (GET_MODE (reg)) <= UNITS_PER_WORD
++ && WORD_REGISTER_OPERATIONS))
+ {
+ /* An OP_INOUT is required when reloading a subreg of a
+ mode wider than a word to ensure that data beyond the
+--
+2.13.0
+
--
1.9.1
--
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</pre>
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