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cpuid: correctly report level 7 for ecx != 0

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This commit is contained in:
Fabian 2022-10-17 22:21:01 -05:00
parent 0c17fea221
commit b9df44e646
1 changed files with 9 additions and 7 deletions
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16
src/rust/cpu/instructions_0f.rs
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@ -3218,10 +3218,12 @@ pub unsafe fn instr_0FA2() {
},
7 => {
eax = 0; // maximum supported sub-level
ebx = 1 << 9; // enhanced REP MOVSB/STOSB
ecx = 0;
edx = 0;
if read_reg32(ECX) == 0 {
eax = 0; // maximum supported sub-level
ebx = 1 << 9; // enhanced REP MOVSB/STOSB
ecx = 0;
edx = 0;
}
},
0x80000000 => {
@ -3264,11 +3266,11 @@ pub unsafe fn instr_0FA2() {
},
}
if level == 4 {
if level == 4 || level == 7 {
dbg_log!(
"cpuid: eax={:08x} cl={:02x}",
"cpuid: eax={:08x} ecx={:02x}",
read_reg32(EAX),
read_reg8(CL),
read_reg32(ECX),
);
}
else if level != 0 && level != 2 && level != 0x80000000 {