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| author |  Marshall Mohror | 2022-07-06 13:00:00 -0500 |
|---|---|---|
| committer | Marshall Mohror | 2022-07-06 13:00:00 -0500 |
| commit | e71d457af923f373505729fe5a335e6768f6144a (patch) | |
| tree | 535a7a3ddd28e3a98f5984e0730277cd74850cea /src/common/x64/cpu_detect.cpp | |
| parent | common/x64: Use TSC clock rate from CPUID when available (diff) | |
| download | yuzu-e71d457af923f373505729fe5a335e6768f6144a.tar.gz yuzu-e71d457af923f373505729fe5a335e6768f6144a.tar.xz yuzu-e71d457af923f373505729fe5a335e6768f6144a.zip | |
guard against div-by-zero
Diffstat (limited to 'src/common/x64/cpu_detect.cpp')
| -rw-r--r-- | src/common/x64/cpu_detect.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/common/x64/cpu_detect.cpp b/src/common/x64/cpu_detect.cpp index 4230b2da6..1a27532d4 100644 --- a/src/common/x64/cpu_detect.cpp +++ b/src/common/x64/cpu_detect.cpp | |||
| @@ -170,8 +170,11 @@ static CPUCaps Detect() { | |||
| 170 | // The CPU model can be detected to use the values from turbostat | 170 | // The CPU model can be detected to use the values from turbostat |
| 171 | // https://github.com/torvalds/linux/blob/master/tools/power/x86/turbostat/turbostat.c#L5569 | 171 | // https://github.com/torvalds/linux/blob/master/tools/power/x86/turbostat/turbostat.c#L5569 |
| 172 | // but it's easier to just estimate the TSC tick rate for these cases. | 172 | // but it's easier to just estimate the TSC tick rate for these cases. |
| 173 | caps.tsc_frequency = static_cast<u64>(caps.crystal_frequency) * | 173 | if (caps.tsc_crystal_ratio_denominator) { |
| 174 | caps.tsc_crystal_ratio_numerator / caps.tsc_crystal_ratio_denominator; | 174 | caps.tsc_frequency = static_cast<u64>(caps.crystal_frequency) * |
| 175 | caps.tsc_crystal_ratio_numerator / | ||
| 176 | caps.tsc_crystal_ratio_denominator; | ||
| 177 | } | ||
| 175 | } | 178 | } |
| 176 | 179 | ||
| 177 | if (max_std_fn >= 0x16) { | 180 | if (max_std_fn >= 0x16) { |