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Merge pull request #288 from sebastien-villemot/develop 

Avoid failure on qemu guests declaring an Athlon CPU without 3dnow!
This commit is contained in:
Zhang Xianyi 2013-08-28 06:26:37 -07:00
parent fe98de2f68 eae4cfa3f6
commit 037bd82bef
1 changed files with 13 additions and 1 deletions
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14
driver/others/dynamic.c
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@ -222,7 +222,19 @@ static gotoblas_t *get_coretype(void){
} }
if (vendor == VENDOR_AMD){ if (vendor == VENDOR_AMD){
if (family <= 0xe) return &gotoblas_ATHLON; if (family <= 0xe) {
// Verify that CPU has 3dnow and 3dnowext before claiming it is Athlon
cpuid(0x80000000, &eax, &ebx, &ecx, &edx);
if (eax & 0xffff >= 0x01) {
cpuid(0x80000001, &eax, &ebx, &ecx, &edx);
if ((edx & (1 << 30)) == 0 || (edx & (1 << 31)) == 0)
return NULL;
}
else
return NULL;
return &gotoblas_ATHLON;
}
if (family == 0xf){ if (family == 0xf){
if ((exfamily == 0) || (exfamily == 2)) { if ((exfamily == 0) || (exfamily == 2)) {
if (ecx & (1 << 0)) return &gotoblas_OPTERON_SSE3; if (ecx & (1 << 0)) return &gotoblas_OPTERON_SSE3;