xref: /kvm-unit-tests/x86/idt_test.c (revision 31e68df7c38220f4144a45b8e3d1663f6348ee7e) 
1 #include "libcflat.h"
2 #include "processor.h"
3 #include "desc.h"
4 
test_ud2(bool * rflags_rf)5 static int test_ud2(bool *rflags_rf)
6 {
7     asm volatile(ASM_TRY("1f")
8                  "ud2 \n\t"
9                  "1:" :);
10     *rflags_rf = exception_rflags_rf();
11     return exception_vector();
12 }
13 
test_gp(bool * rflags_rf)14 static int test_gp(bool *rflags_rf)
15 {
16     unsigned long tmp;
17 
18     asm volatile("mov $0xffffffff, %0 \n\t"
19                  ASM_TRY("1f")
20 		 "mov %0, %%cr4\n\t"
21                  "1:"
22                  : "=a"(tmp));
23     *rflags_rf = exception_rflags_rf();
24     return exception_vector();
25 }
26 
main(void)27 int main(void)
28 {
29     int r;
30     bool rflags_rf;
31 
32     printf("Starting IDT test\n");
33     r = test_gp(&rflags_rf);
34     report(r == GP_VECTOR, "Testing #GP");
35     report(rflags_rf, "Testing #GP rflags.rf");
36     r = test_ud2(&rflags_rf);
37     report(r == UD_VECTOR, "Testing #UD");
38     report(rflags_rf, "Testing #UD rflags.rf");
39 
40     return report_summary();
41 }
42