diff options
Diffstat (limited to 'gitlab/issues_text/target_i386/host_missing/accel_TCG/1373')
| -rw-r--r-- | gitlab/issues_text/target_i386/host_missing/accel_TCG/1373 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gitlab/issues_text/target_i386/host_missing/accel_TCG/1373 b/gitlab/issues_text/target_i386/host_missing/accel_TCG/1373 new file mode 100644 index 000000000..c25a3a9e9 --- /dev/null +++ b/gitlab/issues_text/target_i386/host_missing/accel_TCG/1373 @@ -0,0 +1,20 @@ +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: +1. Compile this code +``` +void main() { + asm("push 512; popfq;"); + asm("mov rax, 0xffffffff84fdbf24"); + asm("mov rbx, 0xb197d26043bec15d"); + asm("adox eax, ebx"); +} +``` +2. 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. |