diff options
Diffstat (limited to 'results/classifier/semantic-bugs/graphic/1641637')
| -rw-r--r-- | results/classifier/semantic-bugs/graphic/1641637 | 743 |
1 files changed, 0 insertions, 743 deletions
diff --git a/results/classifier/semantic-bugs/graphic/1641637 b/results/classifier/semantic-bugs/graphic/1641637 deleted file mode 100644 index dff81518..00000000 --- a/results/classifier/semantic-bugs/graphic/1641637 +++ /dev/null @@ -1,743 +0,0 @@ -graphic: 0.957 -instruction: 0.942 -semantic: 0.931 -mistranslation: 0.910 -other: 0.901 -assembly: 0.881 -device: 0.878 -socket: 0.874 -KVM: 0.857 -boot: 0.846 -network: 0.842 -vnc: 0.842 - -incorrect illegal SSE3 instructions reporting on x86_64 - -Hi all, we found 28 differently encoded illegal SSE3 instructions reporting on the most recent x86_64 user mode linux qemu (version 2.7.0). We believe these reporting should be incorrect because the same code can be executed on a real machine. The instructions are the following: - -pabsb %mm0, %mm1 -pabsb %xmm0, %xmm1 -pabsd %mm0, %mm1 -pabsd %xmm0, %xmm1 -pabsw %mm0, %mm1 -pabsw %xmm0, %xmm1 -phaddd %mm0, %mm1 -phaddd %xmm0, %xmm1 -phaddsw %mm0, %mm1 -phaddsw %xmm0, %xmm1 -phaddw %mm0, %mm1 -phaddw %xmm0, %xmm1 -phsubd %mm0, %mm1 -phsubd %xmm0, %xmm1 -phsubsw %mm0, %mm1 -phsubsw %xmm0, %xmm1 -phsubw %mm0, %mm1 -phsubw %xmm0, %xmm1 -pmaddubsw %mm0, %mm1 -pmaddubsw %xmm0, %xmm1 -pmulhrsw %mm0, %mm1 -pmulhrsw %xmm0, %xmm1 -psignb %mm0, %mm1 -psignb %xmm0, %xmm1 -psignd %mm0, %mm1 -psignd %xmm0, %xmm1 -psignw %mm0, %mm1 -psignw %xmm0, %xmm1 - -The following is the proof of code - -/********** Beginning of bug 1.c: pabsb %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("pabsb %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 1.c **********/ - - -/********** Beginning of bug 2.c: pabsb %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("pabsb %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 2.c **********/ - - -/********** Beginning of bug 3.c: pabsd %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("pabsd %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 3.c **********/ - - -/********** Beginning of bug 4.c: pabsd %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("pabsd %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 4.c **********/ - - -/********** Beginning of bug 5.c: pabsw %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("pabsw %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 5.c **********/ - - -/********** Beginning of bug 6.c: pabsw %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("pabsw %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 6.c **********/ - - -/********** Beginning of bug 7.c: phaddd %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("phaddd %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 7.c **********/ - - -/********** Beginning of bug 8.c: phaddd %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("phaddd %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 8.c **********/ - - -/********** Beginning of bug 9.c: phaddsw %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("phaddsw %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 9.c **********/ - - -/********** Beginning of bug 10.c: phaddsw %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("phaddsw %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 10.c **********/ - - -/********** Beginning of bug 11.c: phaddw %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("phaddw %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 11.c **********/ - - -/********** Beginning of bug 12.c: phaddw %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("phaddw %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 12.c **********/ - - -/********** Beginning of bug 13.c: phsubd %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("phsubd %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 13.c **********/ - - -/********** Beginning of bug 14.c: phsubd %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("phsubd %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 14.c **********/ - - -/********** Beginning of bug 15.c: phsubsw %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("phsubsw %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 15.c **********/ - - -/********** Beginning of bug 16.c: phsubsw %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("phsubsw %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 16.c **********/ - - -/********** Beginning of bug 17.c: phsubw %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("phsubw %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 17.c **********/ - - -/********** Beginning of bug 18.c: phsubw %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("phsubw %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 18.c **********/ - - -/********** Beginning of bug 19.c: pmaddubsw %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char i2[0x10]; -unsigned char i3[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm0\n"::"r"((char *)(i2)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i3)));; - asm("pmaddubsw %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 19.c **********/ - - -/********** Beginning of bug 20.c: pmaddubsw %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char i2[0x10]; -unsigned char i3[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm0\n"::"r"((char *)(i2)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i3)));; - asm("pmaddubsw %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 20.c **********/ - - -/********** Beginning of bug 21.c: pmulhrsw %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("pmulhrsw %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 21.c **********/ - - -/********** Beginning of bug 22.c: pmulhrsw %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("pmulhrsw %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 22.c **********/ - - -/********** Beginning of bug 23.c: psignb %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("psignb %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 23.c **********/ - - -/********** Beginning of bug 24.c: psignb %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("psignb %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 24.c **********/ - - -/********** Beginning of bug 25.c: psignd %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("psignd %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 25.c **********/ - - -/********** Beginning of bug 26.c: psignd %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("psignd %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 26.c **********/ - - -/********** Beginning of bug 27.c: psignw %mm0, %mm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movq (%%rdx), %%mm1\n"::"r"((char *)(i1)));; - asm("psignw %mm0, %mm1"); - asm("mov %0, %%rdx\n" - "movq %%mm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 27.c **********/ - - -/********** Beginning of bug 28.c: psignw %xmm0, %xmm1 **********/ - -int printf(const char *format, ...); -unsigned char i0[0x10]; -unsigned char i1[0x10]; -unsigned char o[0x10]; -int main() { - int k = 0; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm0\n"::"r"((char *)(i0)));; - asm("mov %0, %%rdx\n" - "movdqu (%%rdx), %%xmm1\n"::"r"((char *)(i1)));; - asm("psignw %xmm0, %xmm1"); - asm("mov %0, %%rdx\n" - "movdqu %%xmm1, (%%rdx)\n"::"r"((char *)(o)));; - for (k = 0; k < 0x10; k++) - printf("%02x", o[0x10 - 1 - k]); - printf("\n"); -} - -/********** End of bug 28.c **********/ - -For any of the above code, when compiled into x86-64 binary code with gcc, qemu reports the illegal instructions bug. However, these can be correctly executed on a real machine. For example, - -$ gcc 28.c -o 28 -$ qemu-x86_64 ./28 -qemu: uncaught target signal 4 (Illegal instruction) - core dumped -Illegal instruction -$ ./28 -00000000000000000000000000000000 - -Some information about the system: - -$ qemu-x86_64 --version -qemu-x86_64 version 2.7.0, Copyright (c) 2003-2016 Fabrice Bellard and the QEMU Project developers -$ uname -a -Linux cgos-System-Product-Name 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux -$ gcc --version -gcc (Ubuntu 4.8.4-2ubuntu1~14.04) 4.8.4 -Copyright (C) 2013 Free Software Foundation, Inc. -This is free software; see the source for copying conditions. There is NO -warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - - -Thanks! - -Hi Jie, - -I can reproduce this by single-stepping through the bug1 testing code using gdb, and SIGILL was encountered when executing the pabsb SSE3 instruction. Maybe it was due to QEMU's translator, I'll look further into it. - -Hi Jie, - -Seems that the problem was caused by not specifying the cpu model when running QEMU. -when running -qemu-x86_64 ./28 -QEMU would recognize the cpu model as "qemu64", which act like a cpu doesn't support advanced instruction sets like SSSE3. To workaround, you can run -qemu-x86_86 -cpu core2duo ./28 -The cpu specifications could be found at target-i386/cpu.c. - -I haven't tested through all the cases yet, but I'm almost sure that was the problem, for all your test cases used SSSE3 instructions or something alike. -Please let me know if there are some more exceptions, thanks! - |