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Diffstat (limited to 'results/classifier/semantic-bugs/2175')
| -rw-r--r-- | results/classifier/semantic-bugs/2175 | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/results/classifier/semantic-bugs/2175 b/results/classifier/semantic-bugs/2175 new file mode 100644 index 00000000..874c3bcd --- /dev/null +++ b/results/classifier/semantic-bugs/2175 @@ -0,0 +1,51 @@ +instruction: 0.883 +device: 0.776 +graphic: 0.745 +assembly: 0.701 +network: 0.686 +vnc: 0.644 +other: 0.619 +socket: 0.611 +mistranslation: 0.593 +KVM: 0.567 +semantic: 0.514 +boot: 0.511 + +Intel BLSI CF computation bug +Description of problem: +CF flag computation of BLSI instruction is wrong. It seems #1370 was not completely fixed. +Steps to reproduce: +1. Compile `example.c` using this command: `gcc -o example.bin example.c`. My gcc version is 12.3.0, but other versions may work. +``` +int main() { + __asm__ ( + "movq $0x1, %r8\n" + "mov $0xedbf530a, %r9\n" + "push $0x1\n" + "popf\n" + "blsi %r9d, %r8d\n" + "pushf\n" + "pop %rax\n" + "pop %rbp\n" + "ret\n" + ); + + return 0; +} +``` +2. Run `./example.bin`. Then check the return code using `echo $?`. It should be 3. +``` +$ ./example.bin +$ echo $? +3 +``` +3. Run `./qemu-x86_64 ./example.bin`. Then check the return code using `echo $?`. It should be 2. +``` +$ ./qemu-x86_64 ./example.bin +$ echo $? +2 +``` + +The return code of `./example.bin` contains the value of the `RFLAGS` register after executing the `BLSI` instruction. +Additional information: + |