Muldersoft/LameXP
Muldersoft/LameXP
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Fix a bug in the CPU detection code that could result in an infinite loop, if the CPU doesn't provide 'Extended Function CPUID Information'. Core of this problem is that VC's __cpuid() intrinsic has the parameters defined as 'int', but returns values of type 'unsigned int'.

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LoRd_MuldeR 2011-02-07 22:01:06 +01:00
parent 0fd4b56a87
commit 8016e186dc
3 changed files with 21 additions and 9 deletions
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4
src/Config.h
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@ -25,8 +25,8 @@
#define VER_LAMEXP_MAJOR 4 #define VER_LAMEXP_MAJOR 4
#define VER_LAMEXP_MINOR_HI 0 #define VER_LAMEXP_MINOR_HI 0
#define VER_LAMEXP_MINOR_LO 0 #define VER_LAMEXP_MINOR_LO 0
#define VER_LAMEXP_BUILD 293 #define VER_LAMEXP_BUILD 298
#define VER_LAMEXP_SUFFIX Beta-3 #define VER_LAMEXP_SUFFIX Beta-4
/* /*
* Tools versions * Tools versions

22
src/Global.cpp
View File

@ -373,18 +373,30 @@ lamexp_cpu_t lamexp_detect_cpu_features(void)
} }
__cpuid(CPUInfo, 0x80000000); __cpuid(CPUInfo, 0x80000000);
int nExIds = CPUInfo[0]; int nExIds = max(min(CPUInfo[0], 0x80000004), 0x80000000);
for(int i = 0x80000000; i <= nExIds; ++i) for(int i = 0x80000002; i <= nExIds; ++i)
{ {
__cpuid(CPUInfo, i); __cpuid(CPUInfo, i);
if(i == 0x80000002) memcpy(CPUBrandString, CPUInfo, sizeof(CPUInfo)); switch(i)
else if(i == 0x80000003) memcpy(CPUBrandString + 16, CPUInfo, sizeof(CPUInfo)); {
else if(i == 0x80000004) memcpy(CPUBrandString + 32, CPUInfo, sizeof(CPUInfo)); case 0x80000002:
memcpy(CPUBrandString, CPUInfo, sizeof(CPUInfo));
break;
case 0x80000003:
memcpy(CPUBrandString + 16, CPUInfo, sizeof(CPUInfo));
break;
case 0x80000004:
memcpy(CPUBrandString + 32, CPUInfo, sizeof(CPUInfo));
break;
}
} }
strcpy_s(features.brand, 0x40, CPUBrandString); strcpy_s(features.brand, 0x40, CPUBrandString);
if(strlen(features.brand) < 1) strcpy_s(features.brand, 0x40, "Unknown");
if(strlen(features.vendor) < 1) strcpy_s(features.vendor, 0x40, "Unknown");
#if !defined(_M_X64 ) && !defined(_M_IA64) #if !defined(_M_X64 ) && !defined(_M_IA64)
if(!IsWow64ProcessPtr || !GetNativeSystemInfoPtr) if(!IsWow64ProcessPtr || !GetNativeSystemInfoPtr)
{ {