i386: host_vendor_fms() helper function
Helper function for code that needs to check the host CPU vendor/family/model/stepping values. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <20170309181212.18864-2-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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@ -688,6 +688,25 @@ void host_cpuid(uint32_t function, uint32_t count,
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*edx = vec[3];
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}
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void host_vendor_fms(char *vendor, int *family, int *model, int *stepping)
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{
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uint32_t eax, ebx, ecx, edx;
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host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
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x86_cpu_vendor_words2str(vendor, ebx, edx, ecx);
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host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx);
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if (family) {
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*family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF);
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}
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if (model) {
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*model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12);
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}
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if (stepping) {
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*stepping = eax & 0x0F;
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}
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}
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/* CPU class name definitions: */
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#define X86_CPU_TYPE_SUFFIX "-" TYPE_X86_CPU
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@ -1436,6 +1436,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
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void cpu_clear_apic_feature(CPUX86State *env);
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void host_cpuid(uint32_t function, uint32_t count,
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uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx);
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void host_vendor_fms(char *vendor, int *family, int *model, int *stepping);
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/* helper.c */
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int x86_cpu_handle_mmu_fault(CPUState *cpu, vaddr addr,
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