diff options
Diffstat (limited to 'results/classifier/014/semantic-x86/gitlab_semantic_addsubps')
| -rw-r--r-- | results/classifier/014/semantic-x86/gitlab_semantic_addsubps | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/results/classifier/014/semantic-x86/gitlab_semantic_addsubps b/results/classifier/014/semantic-x86/gitlab_semantic_addsubps deleted file mode 100644 index 9982d18a2..000000000 --- a/results/classifier/014/semantic-x86/gitlab_semantic_addsubps +++ /dev/null @@ -1,55 +0,0 @@ -x86: 0.995 -semantic: 0.974 -architecture: 0.868 -device: 0.758 -graphic: 0.700 -ppc: 0.665 -debug: 0.650 -performance: 0.552 -vnc: 0.544 -operating system: 0.543 -i386: 0.538 -assembly: 0.531 -boot: 0.465 -permissions: 0.443 -kernel: 0.427 -socket: 0.426 -network: 0.393 -PID: 0.358 -register: 0.341 -mistranslation: 0.299 -risc-v: 0.293 -files: 0.280 -TCG: 0.255 -arm: 0.252 -alpha: 0.217 -VMM: 0.216 -KVM: 0.192 -virtual: 0.176 -peripherals: 0.166 -user-level: 0.144 -hypervisor: 0.126 - -x86 SSE/SSE2/SSE3 instruction semantic bugs with NaN - -Description of problem -The result of SSE/SSE2/SSE3 instructions with NaN is different from the CPU. From Intel manual Volume 1 Appendix D.4.2.2, they defined the behavior of such instructions with NaN. But I think QEMU did not implement this semantic exactly because the byte result is different. - -Steps to reproduce - -Compile this code - -void main() { - asm("mov rax, 0x000000007fffffff; push rax; mov rax, 0x00000000ffffffff; push rax; movdqu XMM1, [rsp];"); - asm("mov rax, 0x2e711de7aa46af1a; push rax; mov rax, 0x7fffffff7fffffff; push rax; movdqu XMM2, [rsp];"); - asm("addsubps xmm1, xmm2"); -} - -Execute and compare the result with the CPU. This problem happens with other SSE/SSE2/SSE3 instructions specified in the manual, Volume 1 Appendix D.4.2.2. - -CPU xmm1[3] = 0xffffffff - -QEMU xmm1[3] = 0x7fffffff - -Additional information -This bug is discovered by research conducted by KAIST SoftSec. |