// SPDX-FileCopyrightText: 2017 Google Inc.
// SPDX-License-Identifier: Apache-2.0


#ifndef CPU_FEATURES_INCLUDE_CPUINFO_X86_H_
#define CPU_FEATURES_INCLUDE_CPUINFO_X86_H_

#include "cpu_features_cache_info.h"
#include "cpu_features_macros.h"

CPU_FEATURES_START_CPP_NAMESPACE

// See https://en.wikipedia.org/wiki/CPUID for a list of x86 cpu features.
// The field names are based on the short name provided in the wikipedia tables.
typedef struct
{
    int fpu : 1;
    int tsc : 1;
    int cx8 : 1;
    int clfsh : 1;
    int mmx : 1;
    int aes : 1;
    int erms : 1;
    int f16c : 1;
    int fma4 : 1;
    int fma3 : 1;
    int vaes : 1;
    int vpclmulqdq : 1;
    int bmi1 : 1;
    int hle : 1;
    int bmi2 : 1;
    int rtm : 1;
    int rdseed : 1;
    int clflushopt : 1;
    int clwb : 1;

    int sse : 1;
    int sse2 : 1;
    int sse3 : 1;
    int ssse3 : 1;
    int sse4_1 : 1;
    int sse4_2 : 1;
    int sse4a : 1;

    int avx : 1;
    int avx2 : 1;

    int avx512f : 1;
    int avx512cd : 1;
    int avx512er : 1;
    int avx512pf : 1;
    int avx512bw : 1;
    int avx512dq : 1;
    int avx512vl : 1;
    int avx512ifma : 1;
    int avx512vbmi : 1;
    int avx512vbmi2 : 1;
    int avx512vnni : 1;
    int avx512bitalg : 1;
    int avx512vpopcntdq : 1;
    int avx512_4vnniw : 1;
    int avx512_4vbmi2 : 1;

    int pclmulqdq : 1;
    int smx : 1;
    int sgx : 1;
    int cx16 : 1;  // aka. CMPXCHG16B
    int sha : 1;
    int popcnt : 1;
    int movbe : 1;
    int rdrnd : 1;

    int dca : 1;
    int ss : 1;
    // Make sure to update X86FeaturesEnum below if you add a field here.
} X86Features;

typedef struct
{
    X86Features features;
    int family;
    int model;
    int stepping;
    char vendor[13];  // 0 terminated string
} X86Info;

// Calls cpuid and returns an initialized X86info.
// This function is guaranteed to be malloc, memset and memcpy free.
X86Info GetX86Info(void);

// Returns cache hierarchy informations.
// Can call cpuid multiple times.
// Only works on Intel CPU at the moment.
// This function is guaranteed to be malloc, memset and memcpy free.
CacheInfo GetX86CacheInfo(void);

typedef enum
{
    X86_UNKNOWN,
    INTEL_CORE,      // CORE
    INTEL_PNR,       // PENRYN
    INTEL_NHM,       // NEHALEM
    INTEL_ATOM_BNL,  // BONNELL
    INTEL_WSM,       // WESTMERE
    INTEL_SNB,       // SANDYBRIDGE
    INTEL_IVB,       // IVYBRIDGE
    INTEL_ATOM_SMT,  // SILVERMONT
    INTEL_HSW,       // HASWELL
    INTEL_BDW,       // BROADWELL
    INTEL_SKL,       // SKYLAKE
    INTEL_ATOM_GMT,  // GOLDMONT
    INTEL_KBL,       // KABY LAKE
    INTEL_CFL,       // COFFEE LAKE
    INTEL_WHL,       // WHISKEY LAKE
    INTEL_CNL,       // CANNON LAKE
    INTEL_ICL,       // ICE LAKE
    AMD_HAMMER,      // K8
    AMD_K10,         // K10
    AMD_BOBCAT,      // K14
    AMD_BULLDOZER,   // K15
    AMD_JAGUAR,      // K16
    AMD_ZEN,         // K17
} X86Microarchitecture;

// Returns the underlying microarchitecture by looking at X86Info's vendor,
// family and model.
X86Microarchitecture GetX86Microarchitecture(const X86Info* info);

// Calls cpuid and fills the brand_string.
// - brand_string *must* be of size 49 (beware of array decaying).
// - brand_string will be zero terminated.
// - This function calls memcpy.
void FillX86BrandString(char brand_string[49]);

////////////////////////////////////////////////////////////////////////////////
// Introspection functions

typedef enum
{
    X86_FPU,
    X86_TSC,
    X86_CX8,
    X86_CLFSH,
    X86_MMX,
    X86_AES,
    X86_ERMS,
    X86_F16C,
    X86_FMA4,
    X86_FMA3,
    X86_VAES,
    X86_VPCLMULQDQ,
    X86_BMI1,
    X86_HLE,
    X86_BMI2,
    X86_RTM,
    X86_RDSEED,
    X86_CLFLUSHOPT,
    X86_CLWB,
    X86_SSE,
    X86_SSE2,
    X86_SSE3,
    X86_SSSE3,
    X86_SSE4_1,
    X86_SSE4_2,
    X86_SSE4A,
    X86_AVX,
    X86_AVX2,
    X86_AVX512F,
    X86_AVX512CD,
    X86_AVX512ER,
    X86_AVX512PF,
    X86_AVX512BW,
    X86_AVX512DQ,
    X86_AVX512VL,
    X86_AVX512IFMA,
    X86_AVX512VBMI,
    X86_AVX512VBMI2,
    X86_AVX512VNNI,
    X86_AVX512BITALG,
    X86_AVX512VPOPCNTDQ,
    X86_AVX512_4VNNIW,
    X86_AVX512_4VBMI2,
    X86_PCLMULQDQ,
    X86_SMX,
    X86_SGX,
    X86_CX16,
    X86_SHA,
    X86_POPCNT,
    X86_MOVBE,
    X86_RDRND,
    X86_DCA,
    X86_SS,
    X86_LAST_,
} X86FeaturesEnum;

int GetX86FeaturesEnumValue(const X86Features* features, X86FeaturesEnum value);

const char* GetX86FeaturesEnumName(X86FeaturesEnum);

const char* GetX86MicroarchitectureName(X86Microarchitecture);

CPU_FEATURES_END_CPP_NAMESPACE

#if !defined(CPU_FEATURES_ARCH_X86)
#error "Including cpuinfo_x86.h from a non-x86 target."
#endif

#endif  // CPU_FEATURES_INCLUDE_CPUINFO_X86_H_