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add check if cpuid 0x80000000 & 0x80000001 is available

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This commit is contained in:
Stefan Lankes 2017-08-06 23:56:14 +02:00
parent d406066fc9
commit ac924443de
1 changed files with 13 additions and 4 deletions
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17
librs/src/arch/x86_64/processor.rs
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@ -299,11 +299,20 @@ impl CpuInfo {
f1 &= 0 ^ CPU_FEATURE_SEP;
}
cpuid = cpuid4(0x80000001u32, 0, 0, 0);
let f3: u32 = cpuid.edx;
cpuid = cpuid4(0x80000000u32, 0, 0, 0);
let extended: u32 = cpuid.eax;
cpuid = cpuid4(0x80000008u32, 0, 0, 0);
let width: u32 = cpuid.eax;
let mut f3: u32 = 0;
if extended >= 0x80000001u32 {
cpuid = cpuid4(0x80000001u32, 0, 0, 0);
f3 = cpuid.edx;
}
let mut width: u32 = 0;
if extended >= 0x80000008u32 {
cpuid = cpuid4(0x80000008u32, 0, 0, 0);
width = cpuid.eax;
}
let mut f4: u32 = 0;
/* Additional Intel-defined flags: level 0x00000007 */