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