| /* msr tests */ |
| |
| #include "libcflat.h" |
| #include "processor.h" |
| #include "msr.h" |
| |
| struct msr_info { |
| int index; |
| const char *name; |
| struct tc { |
| int valid; |
| unsigned long long value; |
| unsigned long long expected; |
| } val_pairs[20]; |
| }; |
| |
| |
| #define addr_64 0x0000123456789abcULL |
| |
| struct msr_info msr_info[] = |
| { |
| { .index = 0x00000174, .name = "IA32_SYSENTER_CS", |
| .val_pairs = {{ .valid = 1, .value = 0x1234, .expected = 0x1234}} |
| }, |
| { .index = 0x00000175, .name = "MSR_IA32_SYSENTER_ESP", |
| .val_pairs = {{ .valid = 1, .value = addr_64, .expected = addr_64}} |
| }, |
| { .index = 0x00000176, .name = "IA32_SYSENTER_EIP", |
| .val_pairs = {{ .valid = 1, .value = addr_64, .expected = addr_64}} |
| }, |
| { .index = 0x000001a0, .name = "MSR_IA32_MISC_ENABLE", |
| // reserved: 1:2, 4:6, 8:10, 13:15, 17, 19:21, 24:33, 35:63 |
| .val_pairs = {{ .valid = 1, .value = 0x400c51889, .expected = 0x400c51889}} |
| }, |
| { .index = 0x00000277, .name = "MSR_IA32_CR_PAT", |
| .val_pairs = {{ .valid = 1, .value = 0x07070707, .expected = 0x07070707}} |
| }, |
| { .index = 0xc0000100, .name = "MSR_FS_BASE", |
| .val_pairs = {{ .valid = 1, .value = addr_64, .expected = addr_64}} |
| }, |
| { .index = 0xc0000101, .name = "MSR_GS_BASE", |
| .val_pairs = {{ .valid = 1, .value = addr_64, .expected = addr_64}} |
| }, |
| { .index = 0xc0000102, .name = "MSR_KERNEL_GS_BASE", |
| .val_pairs = {{ .valid = 1, .value = addr_64, .expected = addr_64}} |
| }, |
| #ifdef __x86_64__ |
| { .index = 0xc0000080, .name = "MSR_EFER", |
| .val_pairs = {{ .valid = 1, .value = 0xD00, .expected = 0xD00}} |
| }, |
| { .index = 0xc0000082, .name = "MSR_LSTAR", |
| .val_pairs = {{ .valid = 1, .value = addr_64, .expected = addr_64}} |
| }, |
| { .index = 0xc0000083, .name = "MSR_CSTAR", |
| .val_pairs = {{ .valid = 1, .value = addr_64, .expected = addr_64}} |
| }, |
| { .index = 0xc0000084, .name = "MSR_SYSCALL_MASK", |
| .val_pairs = {{ .valid = 1, .value = 0xffffffff, .expected = 0xffffffff}} |
| }, |
| #endif |
| |
| // MSR_IA32_DEBUGCTLMSR needs svm feature LBRV |
| // MSR_VM_HSAVE_PA only AMD host |
| }; |
| |
| static int find_msr_info(int msr_index) |
| { |
| int i; |
| for (i = 0; i < sizeof(msr_info)/sizeof(msr_info[0]) ; i++) { |
| if (msr_info[i].index == msr_index) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| static void test_msr_rw(int msr_index, unsigned long long input, unsigned long long expected) |
| { |
| unsigned long long r = 0; |
| int index; |
| const char *sptr; |
| if ((index = find_msr_info(msr_index)) != -1) { |
| sptr = msr_info[index].name; |
| } else { |
| printf("couldn't find name for msr # %#x, skipping\n", msr_index); |
| return; |
| } |
| wrmsr(msr_index, input); |
| r = rdmsr(msr_index); |
| if (expected != r) { |
| printf("testing %s: output = %#x:%#x expected = %#x:%#x\n", sptr, |
| (u32)(r >> 32), (u32)r, (u32)(expected >> 32), (u32)expected); |
| } |
| report(expected == r, "%s", sptr); |
| } |
| |
| int main(int ac, char **av) |
| { |
| int i, j; |
| for (i = 0 ; i < sizeof(msr_info) / sizeof(msr_info[0]); i++) { |
| for (j = 0; j < sizeof(msr_info[i].val_pairs) / sizeof(msr_info[i].val_pairs[0]); j++) { |
| if (msr_info[i].val_pairs[j].valid) { |
| test_msr_rw(msr_info[i].index, msr_info[i].val_pairs[j].value, msr_info[i].val_pairs[j].expected); |
| } else { |
| break; |
| } |
| } |
| } |
| |
| return report_summary(); |
| } |
| |