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Diffstat (limited to 'results/classifier/deepseek-r1:32b/reasoning/instruction/1373')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/reasoning/instruction/1373 | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/reasoning/instruction/1373 b/results/classifier/deepseek-r1:32b/reasoning/instruction/1373 new file mode 100644 index 000000000..d89113c24 --- /dev/null +++ b/results/classifier/deepseek-r1:32b/reasoning/instruction/1373 @@ -0,0 +1,26 @@ +<think> +Okay, so I'm looking at this bug report for QEMU related to x86 instructions ADOX and ADCX. The user provided a code snippet that when compiled and run, shows a discrepancy between the CPU's result and QEMU's output regarding the OF (Overflow Flag). On the CPU, OF is 0 after executing the instruction, but in QEMU, it's set to 1. + +First, I need to understand what ADOX and ADCX do. From my knowledge, these are carry-less multiplication instructions used for operations like GF(2^k) polynomial multiplication, commonly used in cryptography. The ADOX (Add with XOR of operands and OR result) is a bit tricky because it's not your standard addition. + +Looking at the code provided: + +```asm +push 512; popfq; +mov rax, 0xffffffff84fdbf24; +mov rbx, 0xb197d26043bec15d; +adox eax, ebx; +``` + +The first instruction pushes 512 onto the stack and then pops it into EFLAGS. Since 512 in binary is 1000000000, which sets the OF (bit 11) to 1 because EFLAGS are manipulated here. + +Then, rax and rbx are loaded with specific values. After that, the ADOX instruction is executed on eax and ebx. The result of this operation in QEMU sets OF incorrectly compared to the CPU. + +The user mentions that ADCX also has a similar issue but relates to the carry flag (CF). However, in this case, it's specifically about OF with ADOX. + +So, categorizing this bug: It's related to how certain instructions are handled by QEMU. Since the problem occurs during the execution of specific x86 instructions leading to incorrect flags being set, this falls under an instruction-level issue. + +The possible categories given are instruction, syscall, and runtime. This isn't a system call error nor does it relate to general runtime issues beyond specific instruction handling. Therefore, the appropriate category here is 'instruction'. +</think> + +instruction \ No newline at end of file |