ntdll: Avoid two cases of shift overflow in get_cpuinfo.
Gerald Pfeifer
gerald at pfeifer.com
Fri Sep 11 14:28:29 CDT 2015
---
dlls/ntdll/nt.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/dlls/ntdll/nt.c b/dlls/ntdll/nt.c
index 2acaa83..8ae3a98 100644
--- a/dlls/ntdll/nt.c
+++ b/dlls/ntdll/nt.c
@@ -1001,8 +1001,8 @@ static inline void get_cpuinfo(SYSTEM_CPU_INFORMATION* info)
do_cpuid(0x80000001, regs2); /* get vendor features */
user_shared_data->ProcessorFeatures[PF_VIRT_FIRMWARE_ENABLED] = (regs2[2] & (1 << 2 )) >> 2;
user_shared_data->ProcessorFeatures[PF_NX_ENABLED] = (regs2[3] & (1 << 20 )) >> 20;
- user_shared_data->ProcessorFeatures[PF_3DNOW_INSTRUCTIONS_AVAILABLE] = (regs2[3] & (1 << 31 )) >> 31;
- if(regs2[3] & (1 << 31)) info->FeatureSet |= CPU_FEATURE_3DNOW;
+ user_shared_data->ProcessorFeatures[PF_3DNOW_INSTRUCTIONS_AVAILABLE] = (regs2[3] & (1u << 31 )) >> 31;
+ if(regs2[3] & (1u << 31)) info->FeatureSet |= CPU_FEATURE_3DNOW;
}
}
else if (regs[1] == GENU && regs[3] == INEI && regs[2] == NTEL)
--
2.5.1
More information about the wine-patches
mailing list