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| author | Eduardo Habkost <ehabkost@redhat.com> | 2017-03-09 15:12:10 -0300 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2017-03-10 15:01:08 -0300 |
| commit | 20271d484069f154fb262507e63adc3a37e885d2 (patch) | |
| tree | cc1b742e57a9bf6b6d7b4b23e6299576273e1263 | |
| parent | dd4d2578215cd380f40a38028a9904e15b135ef3 (diff) | |
| download | qemu-20271d484069f154fb262507e63adc3a37e885d2.zip | |
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>
| -rw-r--r-- | target/i386/cpu.c | 19 | ||||
| -rw-r--r-- | target/i386/cpu.h | 1 |
2 files changed, 20 insertions, 0 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index fba92125ab..30ba1bd06b 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -688,6 +688,25 @@ void host_cpuid(uint32_t function, uint32_t count, *edx = vec[3]; } +void host_vendor_fms(char *vendor, int *family, int *model, int *stepping) +{ + uint32_t eax, ebx, ecx, edx; + + host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx); + x86_cpu_vendor_words2str(vendor, ebx, edx, ecx); + + host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx); + if (family) { + *family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF); + } + if (model) { + *model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12); + } + if (stepping) { + *stepping = eax & 0x0F; + } +} + /* CPU class name definitions: */ #define X86_CPU_TYPE_SUFFIX "-" TYPE_X86_CPU diff --git a/target/i386/cpu.h b/target/i386/cpu.h index ac2ad6d443..385dcc8fea 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1436,6 +1436,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, void cpu_clear_apic_feature(CPUX86State *env); void host_cpuid(uint32_t function, uint32_t count, uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx); +void host_vendor_fms(char *vendor, int *family, int *model, int *stepping); /* helper.c */ int x86_cpu_handle_mmu_fault(CPUState *cpu, vaddr addr, |