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authorChristian Krinitsin <mail@krinitsin.com>2025-05-30 15:56:20 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-05-30 15:56:20 +0200
commit904141bfb8d5385b75eb3b7afec1dcda89af65a7 (patch)
treec8b5e69b944c9f8b96dbb5afad6214d0406537b2 /classification/test_input/gitlab_semantic_adox
parent712310482c3dbef91c3eb6458d1bff82a275fa52 (diff)
downloademulator-bug-study-904141bfb8d5385b75eb3b7afec1dcda89af65a7.tar.gz
emulator-bug-study-904141bfb8d5385b75eb3b7afec1dcda89af65a7.zip
add tests and include results
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+x86 ADOX and ADCX semantic bug
+Description of problem
+The result of instruction ADOX and ADCX are different from the CPU. The value of one of EFLAGS is different.
+
+Steps to reproduce
+
+Compile this code
+
+
+void main() {
+    asm("push 512; popfq;");
+    asm("mov rax, 0xffffffff84fdbf24");
+    asm("mov rbx, 0xb197d26043bec15d");
+    asm("adox eax, ebx");
+}
+
+
+
+Execute and compare the result with the CPU. This problem happens with ADCX, too (with CF).
+
+CPU
+
+OF = 0
+
+
+QEMU
+
+OF = 1
+
+
+
+
+
+
+Additional information
+This bug is discovered by research conducted by KAIST SoftSec.