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#include <stdint.h> |
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#include <string.h> |
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#include <cpuinfo.h> |
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#include <x86/cpuid.h> |
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#include <x86/api.h> |
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#include <cpuinfo/utils.h> |
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#include <cpuinfo/log.h> |
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#include <cpuinfo/common.h> |
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struct cpuinfo_x86_isa cpuinfo_isa = { 0 }; |
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CPUINFO_INTERNAL uint32_t cpuinfo_x86_clflush_size = 0; |
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void cpuinfo_x86_init_processor(struct cpuinfo_x86_processor* processor) { |
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const struct cpuid_regs leaf0 = cpuid(0); |
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const uint32_t max_base_index = leaf0.eax; |
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const enum cpuinfo_vendor vendor = processor->vendor = |
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cpuinfo_x86_decode_vendor(leaf0.ebx, leaf0.ecx, leaf0.edx); |
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const struct cpuid_regs leaf0x80000000 = cpuid(UINT32_C(0x80000000)); |
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const uint32_t max_extended_index = |
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leaf0x80000000.eax >= UINT32_C(0x80000000) ? leaf0x80000000.eax : 0; |
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const struct cpuid_regs leaf0x80000001 = max_extended_index >= UINT32_C(0x80000001) ? |
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cpuid(UINT32_C(0x80000001)) : (struct cpuid_regs) { 0, 0, 0, 0 }; |
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if (max_base_index >= 1) { |
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const struct cpuid_regs leaf1 = cpuid(1); |
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processor->cpuid = leaf1.eax; |
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const struct cpuinfo_x86_model_info model_info = cpuinfo_x86_decode_model_info(leaf1.eax); |
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const enum cpuinfo_uarch uarch = processor->uarch = |
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cpuinfo_x86_decode_uarch(vendor, &model_info); |
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cpuinfo_x86_clflush_size = ((leaf1.ebx >> 8) & UINT32_C(0x000000FF)) * 8; |
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const bool amd_topology_extensions = !!(leaf0x80000001.ecx & UINT32_C(0x00400000)); |
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cpuinfo_x86_detect_cache( |
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max_base_index, max_extended_index, amd_topology_extensions, vendor, &model_info, |
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&processor->cache, |
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&processor->tlb.itlb_4KB, |
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&processor->tlb.itlb_2MB, |
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&processor->tlb.itlb_4MB, |
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&processor->tlb.dtlb0_4KB, |
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&processor->tlb.dtlb0_2MB, |
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&processor->tlb.dtlb0_4MB, |
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&processor->tlb.dtlb_4KB, |
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&processor->tlb.dtlb_2MB, |
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&processor->tlb.dtlb_4MB, |
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&processor->tlb.dtlb_1GB, |
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&processor->tlb.stlb2_4KB, |
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&processor->tlb.stlb2_2MB, |
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&processor->tlb.stlb2_1GB, |
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&processor->topology.core_bits_length); |
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cpuinfo_x86_detect_topology(max_base_index, max_extended_index, leaf1, &processor->topology); |
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cpuinfo_isa = cpuinfo_x86_detect_isa(leaf1, leaf0x80000001, |
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max_base_index, max_extended_index, vendor, uarch); |
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} |
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if (max_extended_index >= UINT32_C(0x80000004)) { |
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struct cpuid_regs brand_string[3]; |
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for (uint32_t i = 0; i < 3; i++) { |
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brand_string[i] = cpuid(UINT32_C(0x80000002) + i); |
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} |
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memcpy(processor->brand_string, brand_string, sizeof(processor->brand_string)); |
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cpuinfo_log_debug("raw CPUID brand string: \"%48s\"", processor->brand_string); |
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} |
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} |
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