1 files changed, 57 insertions, 0 deletions
diff --git a/results/classifier/zero-shot/016/assembly-x86/gitlab_semantic_bextr b/results/classifier/zero-shot/016/assembly-x86/gitlab_semantic_bextr
new file mode 100644
index 00000000..3d1539ef
--- /dev/null
+++ b/results/classifier/zero-shot/016/assembly-x86/gitlab_semantic_bextr
@@ -0,0 +1,57 @@
+x86: 1.000
+assembly: 0.991
+semantic: 0.982
+i386: 0.980
+debug: 0.687
+register: 0.219
+user-level: 0.151
+operating system: 0.067
+virtual: 0.044
+files: 0.029
+kernel: 0.023
+hypervisor: 0.017
+performance: 0.017
+TCG: 0.016
+architecture: 0.009
+PID: 0.008
+peripherals: 0.007
+device: 0.007
+network: 0.006
+alpha: 0.003
+risc-v: 0.003
+VMM: 0.003
+permissions: 0.002
+socket: 0.002
+KVM: 0.002
+graphic: 0.002
+boot: 0.002
+ppc: 0.001
+vnc: 0.001
+mistranslation: 0.001
+arm: 0.000
+
+x86 BEXTR semantic bug
+Description of problem
+The result of instruction BEXTR is different with from the CPU. The value of destination register is different. I think QEMU does not consider the operand size limit.
+
+Steps to reproduce
+
+Compile this code
+
+void main() {
+    asm("mov rax, 0x17b3693f77fb6e9");
+    asm("mov rbx, 0x8f635a775ad3b9b4");
+    asm("mov rcx, 0xb717b75da9983018");
+    asm("bextr eax, ebx, ecx");
+}
+
+Execute and compare the result with the CPU.
+
+CPU
+RAX = 0x5a
+
+QEMU
+RAX = 0x635a775a
+
+Additional information
+This bug is discovered by research conducted by KAIST SoftSec.