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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 07:27:52 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 07:27:52 +0000
commitd0c85e36e4de67af628d54e9ab577cc3fad7796a (patch)
treef8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/gemma3:12b/assembly/1832422
parent7f4364274750eb8cb39a3e7493132fca1c01232e (diff)
downloademulator-bug-study-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz
emulator-bug-study-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip
add deepseek and gemma results
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+
+SSE CMP ops with 8bit immediate throw sigill with oversized byte
+
+The SSE comparison ops that use an 8bit immediate as a comparison type selector throws a sigill when the immediate is oversized.
+
+Test op that I found this on is here `66 0f c2 c0 d1          cmppd  xmm0,xmm0,0xd1`
+According to the x86-64 documentation only bits [2:0] are used for these ops (and [4:0] for the AVX variant)
+Currently qemu just checks if the value is >=8 and will throw a sigill in that case. It instead needs to mask.
+
+I have a small patch that fixes the issue for the SSE variant.
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