diff options
Diffstat (limited to 'results/classifier/gemma3:12b/assembly/1847467')
| -rw-r--r-- | results/classifier/gemma3:12b/assembly/1847467 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/assembly/1847467 b/results/classifier/gemma3:12b/assembly/1847467 new file mode 100644 index 00000000..44db8752 --- /dev/null +++ b/results/classifier/gemma3:12b/assembly/1847467 @@ -0,0 +1,17 @@ + +qemu-x86_64 segment prefixes error + +qemu-x86_64 version 4.1.0 (qemu-x86_64 version 4.0.0 also have the issue) + +In 64-bit mode (x86_64) the DS, ES, SS or CS segment prefixes should be ignored; qemu-x86_64 does not ignore them. + +example: an x86_64 instructions preceded by FS DS (0x64 0x26) segment prefixes have the linear address of its memory reference flat-mapped (as if DS was in action) whereas it should be FS-mapped (offset by FS_base, because the DS, ES, SS or CS are just ignored). + + +I attach a small C++ program that shows this discrepancy. + +$ ./sample +I'm not in QEMU + +$ qemu-x86_64 ./sample +I'm in QEMU \ No newline at end of file |