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cpuid.h
/*===---- cpuid.h - X86 cpu model detection --------------------------------=== * * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. * See https://llvm.org/LICENSE.txt for license information. * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception * *===-----------------------------------------------------------------------=== */ #ifndef __CPUID_H #define __CPUID_H #if !defined(__x86_64__) && !defined(__i386__) #error this header is for x86 only #endif /* Responses identification request with %eax 0 */ /* AMD: "AuthenticAMD" */ #define signature_AMD_ebx 0x68747541 #define signature_AMD_edx 0x69746e65 #define signature_AMD_ecx 0x444d4163 /* CENTAUR: "CentaurHauls" */ #define signature_CENTAUR_ebx 0x746e6543 #define signature_CENTAUR_edx 0x48727561 #define signature_CENTAUR_ecx 0x736c7561 /* CYRIX: "CyrixInstead" */ #define signature_CYRIX_ebx 0x69727943 #define signature_CYRIX_edx 0x736e4978 #define signature_CYRIX_ecx 0x64616574 /* HYGON: "HygonGenuine" */ #define signature_HYGON_ebx 0x6f677948 #define signature_HYGON_edx 0x6e65476e #define signature_HYGON_ecx 0x656e6975 /* INTEL: "GenuineIntel" */ #define signature_INTEL_ebx 0x756e6547 #define signature_INTEL_edx 0x49656e69 #define signature_INTEL_ecx 0x6c65746e /* TM1: "TransmetaCPU" */ #define signature_TM1_ebx 0x6e617254 #define signature_TM1_edx 0x74656d73 #define signature_TM1_ecx 0x55504361 /* TM2: "GenuineTMx86" */ #define signature_TM2_ebx 0x756e6547 #define signature_TM2_edx 0x54656e69 #define signature_TM2_ecx 0x3638784d /* NSC: "Geode by NSC" */ #define signature_NSC_ebx 0x646f6547 #define signature_NSC_edx 0x79622065 #define signature_NSC_ecx 0x43534e20 /* NEXGEN: "NexGenDriven" */ #define signature_NEXGEN_ebx 0x4778654e #define signature_NEXGEN_edx 0x72446e65 #define signature_NEXGEN_ecx 0x6e657669 /* RISE: "RiseRiseRise" */ #define signature_RISE_ebx 0x65736952 #define signature_RISE_edx 0x65736952 #define signature_RISE_ecx 0x65736952 /* SIS: "SiS SiS SiS " */ #define signature_SIS_ebx 0x20536953 #define signature_SIS_edx 0x20536953 #define signature_SIS_ecx 0x20536953 /* UMC: "UMC UMC UMC " */ #define signature_UMC_ebx 0x20434d55 #define signature_UMC_edx 0x20434d55 #define signature_UMC_ecx 0x20434d55 /* VIA: "VIA VIA VIA " */ #define signature_VIA_ebx 0x20414956 #define signature_VIA_edx 0x20414956 #define signature_VIA_ecx 0x20414956 /* VORTEX: "Vortex86 SoC" */ #define signature_VORTEX_ebx 0x74726f56 #define signature_VORTEX_edx 0x36387865 #define signature_VORTEX_ecx 0x436f5320 /* Features in %ecx for leaf 1 */ #define bit_SSE3 0x00000001 #define bit_PCLMULQDQ 0x00000002 #define bit_PCLMUL bit_PCLMULQDQ /* for gcc compat */ #define bit_DTES64 0x00000004 #define bit_MONITOR 0x00000008 #define bit_DSCPL 0x00000010 #define bit_VMX 0x00000020 #define bit_SMX 0x00000040 #define bit_EIST 0x00000080 #define bit_TM2 0x00000100 #define bit_SSSE3 0x00000200 #define bit_CNXTID 0x00000400 #define bit_FMA 0x00001000 #define bit_CMPXCHG16B 0x00002000 #define bit_xTPR 0x00004000 #define bit_PDCM 0x00008000 #define bit_PCID 0x00020000 #define bit_DCA 0x00040000 #define bit_SSE41 0x00080000 #define bit_SSE4_1 bit_SSE41 /* for gcc compat */ #define bit_SSE42 0x00100000 #define bit_SSE4_2 bit_SSE42 /* for gcc compat */ #define bit_x2APIC 0x00200000 #define bit_MOVBE 0x00400000 #define bit_POPCNT 0x00800000 #define bit_TSCDeadline 0x01000000 #define bit_AESNI 0x02000000 #define bit_AES bit_AESNI /* for gcc compat */ #define bit_XSAVE 0x04000000 #define bit_OSXSAVE 0x08000000 #define bit_AVX 0x10000000 #define bit_F16C 0x20000000 #define bit_RDRND 0x40000000 /* Features in %edx for leaf 1 */ #define bit_FPU 0x00000001 #define bit_VME 0x00000002 #define bit_DE 0x00000004 #define bit_PSE 0x00000008 #define bit_TSC 0x00000010 #define bit_MSR 0x00000020 #define bit_PAE 0x00000040 #define bit_MCE 0x00000080 #define bit_CX8 0x00000100 #define bit_CMPXCHG8B bit_CX8 /* for gcc compat */ #define bit_APIC 0x00000200 #define bit_SEP 0x00000800 #define bit_MTRR 0x00001000 #define bit_PGE 0x00002000 #define bit_MCA 0x00004000 #define bit_CMOV 0x00008000 #define bit_PAT 0x00010000 #define bit_PSE36 0x00020000 #define bit_PSN 0x00040000 #define bit_CLFSH 0x00080000 #define bit_DS 0x00200000 #define bit_ACPI 0x00400000 #define bit_MMX 0x00800000 #define bit_FXSR 0x01000000 #define bit_FXSAVE bit_FXSR /* for gcc compat */ #define bit_SSE 0x02000000 #define bit_SSE2 0x04000000 #define bit_SS 0x08000000 #define bit_HTT 0x10000000 #define bit_TM 0x20000000 #define bit_PBE 0x80000000 /* Features in %ebx for leaf 7 sub-leaf 0 */ #define bit_FSGSBASE 0x00000001 #define bit_SGX 0x00000004 #define bit_BMI 0x00000008 #define bit_HLE 0x00000010 #define bit_AVX2 0x00000020 #define bit_SMEP 0x00000080 #define bit_BMI2 0x00000100 #define bit_ENH_MOVSB 0x00000200 #define bit_INVPCID 0x00000400 #define bit_RTM 0x00000800 #define bit_MPX 0x00004000 #define bit_AVX512F 0x00010000 #define bit_AVX512DQ 0x00020000 #define bit_RDSEED 0x00040000 #define bit_ADX 0x00080000 #define bit_AVX512IFMA 0x00200000 #define bit_CLFLUSHOPT 0x00800000 #define bit_CLWB 0x01000000 #define bit_AVX512PF 0x04000000 #define bit_AVX512ER 0x08000000 #define bit_AVX512CD 0x10000000 #define bit_SHA 0x20000000 #define bit_AVX512BW 0x40000000 #define bit_AVX512VL 0x80000000 /* Features in %ecx for leaf 7 sub-leaf 0 */ #define bit_PREFTCHWT1 0x00000001 #define bit_AVX512VBMI 0x00000002 #define bit_PKU 0x00000004 #define bit_OSPKE 0x00000010 #define bit_WAITPKG 0x00000020 #define bit_AVX512VBMI2 0x00000040 #define bit_SHSTK 0x00000080 #define bit_GFNI 0x00000100 #define bit_VAES 0x00000200 #define bit_VPCLMULQDQ 0x00000400 #define bit_AVX512VNNI 0x00000800 #define bit_AVX512BITALG 0x00001000 #define bit_AVX512VPOPCNTDQ 0x00004000 #define bit_RDPID 0x00400000 #define bit_CLDEMOTE 0x02000000 #define bit_MOVDIRI 0x08000000 #define bit_MOVDIR64B 0x10000000 #define bit_ENQCMD 0x20000000 /* Features in %edx for leaf 7 sub-leaf 0 */ #define bit_AVX5124VNNIW 0x00000004 #define bit_AVX5124FMAPS 0x00000008 #define bit_UINTR 0x00000020 #define bit_AVX512VP2INTERSECT 0x00000100 #define bit_SERIALIZE 0x00004000 #define bit_TSXLDTRK 0x00010000 #define bit_PCONFIG 0x00040000 #define bit_IBT 0x00100000 #define bit_AMXBF16 0x00400000 #define bit_AVX512FP16 0x00800000 #define bit_AMXTILE 0x01000000 #define bit_AMXINT8 0x02000000 /* Features in %eax for leaf 7 sub-leaf 1 */ #define bit_SHA512 0x00000001 #define bit_SM3 0x00000002 #define bit_SM4 0x00000004 #define bit_RAOINT 0x00000008 #define bit_AVXVNNI 0x00000010 #define bit_AVX512BF16 0x00000020 #define bit_CMPCCXADD 0x00000080 #define bit_AMXFP16 0x00200000 #define bit_HRESET 0x00400000 #define bit_AVXIFMA 0x00800000 /* Features in %edx for leaf 7 sub-leaf 1 */ #define bit_AVXVNNIINT8 0x00000010 #define bit_AVXNECONVERT 0x00000020 #define bit_AMXCOMPLEX 0x00000100 #define bit_AVXVNNIINT16 0x00000400 #define bit_PREFETCHI 0x00004000 #define bit_USERMSR 0x00008000 #define bit_AVX10 0x00080000 #define bit_APXF 0x00200000 /* Features in %eax for leaf 13 sub-leaf 1 */ #define bit_XSAVEOPT 0x00000001 #define bit_XSAVEC 0x00000002 #define bit_XSAVES 0x00000008 /* Features in %eax for leaf 0x14 sub-leaf 0 */ #define bit_PTWRITE 0x00000010 /* Features in %ecx for leaf 0x80000001 */ #define bit_LAHF_LM 0x00000001 #define bit_ABM 0x00000020 #define bit_LZCNT bit_ABM /* for gcc compat */ #define bit_SSE4a 0x00000040 #define bit_PRFCHW 0x00000100 #define bit_XOP 0x00000800 #define bit_LWP 0x00008000 #define bit_FMA4 0x00010000 #define bit_TBM 0x00200000 #define bit_MWAITX 0x20000000 /* Features in %edx for leaf 0x80000001 */ #define bit_MMXEXT 0x00400000 #define bit_LM 0x20000000 #define bit_3DNOWP 0x40000000 #define bit_3DNOW 0x80000000 /* Features in %ebx for leaf 0x80000008 */ #define bit_CLZERO 0x00000001 #define bit_RDPRU 0x00000010 #define bit_WBNOINVD 0x00000200 /* Features in %ebx for leaf 0x24 */ #define bit_AVX10_256 0x00020000 #define bit_AVX10_512 0x00040000 #ifdef __i386__ #define __cpuid(__leaf, __eax, __ebx, __ecx, __edx) \ __asm("cpuid" : "=a"(__eax), "=b" (__ebx), "=c"(__ecx), "=d"(__edx) \ : "0"(__leaf)) #define __cpuid_count(__leaf, __count, __eax, __ebx, __ecx, __edx) \ __asm("cpuid" : "=a"(__eax), "=b" (__ebx), "=c"(__ecx), "=d"(__edx) \ : "0"(__leaf), "2"(__count)) #else /* x86-64 uses %rbx as the base register, so preserve it. */ #define __cpuid(__leaf, __eax, __ebx, __ecx, __edx) \ __asm(" xchgq %%rbx,%q1\n" \ " cpuid\n" \ " xchgq %%rbx,%q1" \ : "=a"(__eax), "=r" (__ebx), "=c"(__ecx), "=d"(__edx) \ : "0"(__leaf)) #define __cpuid_count(__leaf, __count, __eax, __ebx, __ecx, __edx) \ __asm(" xchgq %%rbx,%q1\n" \ " cpuid\n" \ " xchgq %%rbx,%q1" \ : "=a"(__eax), "=r" (__ebx), "=c"(__ecx), "=d"(__edx) \ : "0"(__leaf), "2"(__count)) #endif static __inline unsigned int __get_cpuid_max (unsigned int __leaf, unsigned int *__sig) { unsigned int __eax, __ebx, __ecx, __edx; #ifdef __i386__ int __cpuid_supported; __asm(" pushfl\n" " popl %%eax\n" " movl %%eax,%%ecx\n" " xorl $0x00200000,%%eax\n" " pushl %%eax\n" " popfl\n" " pushfl\n" " popl %%eax\n" " movl $0,%0\n" " cmpl %%eax,%%ecx\n" " je 1f\n" " movl $1,%0\n" "1:" : "=r" (__cpuid_supported) : : "eax", "ecx"); if (!__cpuid_supported) return 0; #endif __cpuid(__leaf, __eax, __ebx, __ecx, __edx); if (__sig) *__sig = __ebx; return __eax; } static __inline int __get_cpuid (unsigned int __leaf, unsigned int *__eax, unsigned int *__ebx, unsigned int *__ecx, unsigned int *__edx) { unsigned int __max_leaf = __get_cpuid_max(__leaf & 0x80000000, 0); if (__max_leaf == 0 || __max_leaf < __leaf) return 0; __cpuid(__leaf, *__eax, *__ebx, *__ecx, *__edx); return 1; } static __inline int __get_cpuid_count (unsigned int __leaf, unsigned int __subleaf, unsigned int *__eax, unsigned int *__ebx, unsigned int *__ecx, unsigned int *__edx) { unsigned int __max_leaf = __get_cpuid_max(__leaf & 0x80000000, 0); if (__max_leaf == 0 || __max_leaf < __leaf) return 0; __cpuid_count(__leaf, __subleaf, *__eax, *__ebx, *__ecx, *__edx); return 1; } // In some configurations, __cpuidex is defined as a builtin (primarily // -fms-extensions) which will conflict with the __cpuidex definition below. #if !(__has_builtin(__cpuidex)) static __inline void __cpuidex(int __cpu_info[4], int __leaf, int __subleaf) { __cpuid_count(__leaf, __subleaf, __cpu_info[0], __cpu_info[1], __cpu_info[2], __cpu_info[3]); } #endif #endif /* __CPUID_H */
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