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/* 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}}
},
#endif
{ .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}}
},
// 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("%s", expected == r, 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();
}
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