1 /*===---- cpuid.h - X86 cpu model detection --------------------------------=== 2 * 3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 * See https://llvm.org/LICENSE.txt for license information. 5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 * 7 *===-----------------------------------------------------------------------=== 8 */ 9 10 #ifndef __CPUID_H 11 #define __CPUID_H 12 13 #if !defined(__x86_64__) && !defined(__i386__) 14 #error this header is for x86 only 15 #endif 16 17 /* Responses identification request with %eax 0 */ 18 /* AMD: "AuthenticAMD" */ 19 #define signature_AMD_ebx 0x68747541 20 #define signature_AMD_edx 0x69746e65 21 #define signature_AMD_ecx 0x444d4163 22 /* CENTAUR: "CentaurHauls" */ 23 #define signature_CENTAUR_ebx 0x746e6543 24 #define signature_CENTAUR_edx 0x48727561 25 #define signature_CENTAUR_ecx 0x736c7561 26 /* CYRIX: "CyrixInstead" */ 27 #define signature_CYRIX_ebx 0x69727943 28 #define signature_CYRIX_edx 0x736e4978 29 #define signature_CYRIX_ecx 0x64616574 30 /* HYGON: "HygonGenuine" */ 31 #define signature_HYGON_ebx 0x6f677948 32 #define signature_HYGON_edx 0x6e65476e 33 #define signature_HYGON_ecx 0x656e6975 34 /* INTEL: "GenuineIntel" */ 35 #define signature_INTEL_ebx 0x756e6547 36 #define signature_INTEL_edx 0x49656e69 37 #define signature_INTEL_ecx 0x6c65746e 38 /* TM1: "TransmetaCPU" */ 39 #define signature_TM1_ebx 0x6e617254 40 #define signature_TM1_edx 0x74656d73 41 #define signature_TM1_ecx 0x55504361 42 /* TM2: "GenuineTMx86" */ 43 #define signature_TM2_ebx 0x756e6547 44 #define signature_TM2_edx 0x54656e69 45 #define signature_TM2_ecx 0x3638784d 46 /* NSC: "Geode by NSC" */ 47 #define signature_NSC_ebx 0x646f6547 48 #define signature_NSC_edx 0x79622065 49 #define signature_NSC_ecx 0x43534e20 50 /* NEXGEN: "NexGenDriven" */ 51 #define signature_NEXGEN_ebx 0x4778654e 52 #define signature_NEXGEN_edx 0x72446e65 53 #define signature_NEXGEN_ecx 0x6e657669 54 /* RISE: "RiseRiseRise" */ 55 #define signature_RISE_ebx 0x65736952 56 #define signature_RISE_edx 0x65736952 57 #define signature_RISE_ecx 0x65736952 58 /* SIS: "SiS SiS SiS " */ 59 #define signature_SIS_ebx 0x20536953 60 #define signature_SIS_edx 0x20536953 61 #define signature_SIS_ecx 0x20536953 62 /* UMC: "UMC UMC UMC " */ 63 #define signature_UMC_ebx 0x20434d55 64 #define signature_UMC_edx 0x20434d55 65 #define signature_UMC_ecx 0x20434d55 66 /* VIA: "VIA VIA VIA " */ 67 #define signature_VIA_ebx 0x20414956 68 #define signature_VIA_edx 0x20414956 69 #define signature_VIA_ecx 0x20414956 70 /* VORTEX: "Vortex86 SoC" */ 71 #define signature_VORTEX_ebx 0x74726f56 72 #define signature_VORTEX_edx 0x36387865 73 #define signature_VORTEX_ecx 0x436f5320 74 75 /* Features in %ecx for leaf 1 */ 76 #define bit_SSE3 0x00000001 77 #define bit_PCLMULQDQ 0x00000002 78 #define bit_PCLMUL bit_PCLMULQDQ /* for gcc compat */ 79 #define bit_DTES64 0x00000004 80 #define bit_MONITOR 0x00000008 81 #define bit_DSCPL 0x00000010 82 #define bit_VMX 0x00000020 83 #define bit_SMX 0x00000040 84 #define bit_EIST 0x00000080 85 #define bit_TM2 0x00000100 86 #define bit_SSSE3 0x00000200 87 #define bit_CNXTID 0x00000400 88 #define bit_FMA 0x00001000 89 #define bit_CMPXCHG16B 0x00002000 90 #define bit_xTPR 0x00004000 91 #define bit_PDCM 0x00008000 92 #define bit_PCID 0x00020000 93 #define bit_DCA 0x00040000 94 #define bit_SSE41 0x00080000 95 #define bit_SSE4_1 bit_SSE41 /* for gcc compat */ 96 #define bit_SSE42 0x00100000 97 #define bit_SSE4_2 bit_SSE42 /* for gcc compat */ 98 #define bit_x2APIC 0x00200000 99 #define bit_MOVBE 0x00400000 100 #define bit_POPCNT 0x00800000 101 #define bit_TSCDeadline 0x01000000 102 #define bit_AESNI 0x02000000 103 #define bit_AES bit_AESNI /* for gcc compat */ 104 #define bit_XSAVE 0x04000000 105 #define bit_OSXSAVE 0x08000000 106 #define bit_AVX 0x10000000 107 #define bit_F16C 0x20000000 108 #define bit_RDRND 0x40000000 109 110 /* Features in %edx for leaf 1 */ 111 #define bit_FPU 0x00000001 112 #define bit_VME 0x00000002 113 #define bit_DE 0x00000004 114 #define bit_PSE 0x00000008 115 #define bit_TSC 0x00000010 116 #define bit_MSR 0x00000020 117 #define bit_PAE 0x00000040 118 #define bit_MCE 0x00000080 119 #define bit_CX8 0x00000100 120 #define bit_CMPXCHG8B bit_CX8 /* for gcc compat */ 121 #define bit_APIC 0x00000200 122 #define bit_SEP 0x00000800 123 #define bit_MTRR 0x00001000 124 #define bit_PGE 0x00002000 125 #define bit_MCA 0x00004000 126 #define bit_CMOV 0x00008000 127 #define bit_PAT 0x00010000 128 #define bit_PSE36 0x00020000 129 #define bit_PSN 0x00040000 130 #define bit_CLFSH 0x00080000 131 #define bit_DS 0x00200000 132 #define bit_ACPI 0x00400000 133 #define bit_MMX 0x00800000 134 #define bit_FXSR 0x01000000 135 #define bit_FXSAVE bit_FXSR /* for gcc compat */ 136 #define bit_SSE 0x02000000 137 #define bit_SSE2 0x04000000 138 #define bit_SS 0x08000000 139 #define bit_HTT 0x10000000 140 #define bit_TM 0x20000000 141 #define bit_PBE 0x80000000 142 143 /* Features in %ebx for leaf 7 sub-leaf 0 */ 144 #define bit_FSGSBASE 0x00000001 145 #define bit_SGX 0x00000004 146 #define bit_BMI 0x00000008 147 #define bit_HLE 0x00000010 148 #define bit_AVX2 0x00000020 149 #define bit_SMEP 0x00000080 150 #define bit_BMI2 0x00000100 151 #define bit_ENH_MOVSB 0x00000200 152 #define bit_INVPCID 0x00000400 153 #define bit_RTM 0x00000800 154 #define bit_MPX 0x00004000 155 #define bit_AVX512F 0x00010000 156 #define bit_AVX512DQ 0x00020000 157 #define bit_RDSEED 0x00040000 158 #define bit_ADX 0x00080000 159 #define bit_AVX512IFMA 0x00200000 160 #define bit_CLFLUSHOPT 0x00800000 161 #define bit_CLWB 0x01000000 162 #define bit_AVX512PF 0x04000000 163 #define bit_AVX512ER 0x08000000 164 #define bit_AVX512CD 0x10000000 165 #define bit_SHA 0x20000000 166 #define bit_AVX512BW 0x40000000 167 #define bit_AVX512VL 0x80000000 168 169 /* Features in %ecx for leaf 7 sub-leaf 0 */ 170 #define bit_PREFTCHWT1 0x00000001 171 #define bit_AVX512VBMI 0x00000002 172 #define bit_PKU 0x00000004 173 #define bit_OSPKE 0x00000010 174 #define bit_WAITPKG 0x00000020 175 #define bit_AVX512VBMI2 0x00000040 176 #define bit_SHSTK 0x00000080 177 #define bit_GFNI 0x00000100 178 #define bit_VAES 0x00000200 179 #define bit_VPCLMULQDQ 0x00000400 180 #define bit_AVX512VNNI 0x00000800 181 #define bit_AVX512BITALG 0x00001000 182 #define bit_AVX512VPOPCNTDQ 0x00004000 183 #define bit_RDPID 0x00400000 184 #define bit_CLDEMOTE 0x02000000 185 #define bit_MOVDIRI 0x08000000 186 #define bit_MOVDIR64B 0x10000000 187 #define bit_ENQCMD 0x20000000 188 189 /* Features in %edx for leaf 7 sub-leaf 0 */ 190 #define bit_AVX5124VNNIW 0x00000004 191 #define bit_AVX5124FMAPS 0x00000008 192 #define bit_UINTR 0x00000020 193 #define bit_AVX512VP2INTERSECT 0x00000100 194 #define bit_SERIALIZE 0x00004000 195 #define bit_TSXLDTRK 0x00010000 196 #define bit_PCONFIG 0x00040000 197 #define bit_IBT 0x00100000 198 #define bit_AMXBF16 0x00400000 199 #define bit_AVX512FP16 0x00800000 200 #define bit_AMXTILE 0x01000000 201 #define bit_AMXINT8 0x02000000 202 203 /* Features in %eax for leaf 7 sub-leaf 1 */ 204 #define bit_SHA512 0x00000001 205 #define bit_SM3 0x00000002 206 #define bit_SM4 0x00000004 207 #define bit_RAOINT 0x00000008 208 #define bit_AVXVNNI 0x00000010 209 #define bit_AVX512BF16 0x00000020 210 #define bit_CMPCCXADD 0x00000080 211 #define bit_AMXFP16 0x00200000 212 #define bit_HRESET 0x00400000 213 #define bit_AVXIFMA 0x00800000 214 215 /* Features in %edx for leaf 7 sub-leaf 1 */ 216 #define bit_AVXVNNIINT8 0x00000010 217 #define bit_AVXNECONVERT 0x00000020 218 #define bit_AMXCOMPLEX 0x00000100 219 #define bit_AVXVNNIINT16 0x00000400 220 #define bit_PREFETCHI 0x00004000 221 #define bit_USERMSR 0x00008000 222 #define bit_AVX10 0x00080000 223 #define bit_APXF 0x00200000 224 225 /* Features in %eax for leaf 13 sub-leaf 1 */ 226 #define bit_XSAVEOPT 0x00000001 227 #define bit_XSAVEC 0x00000002 228 #define bit_XSAVES 0x00000008 229 230 /* Features in %eax for leaf 0x14 sub-leaf 0 */ 231 #define bit_PTWRITE 0x00000010 232 233 /* Features in %ecx for leaf 0x80000001 */ 234 #define bit_LAHF_LM 0x00000001 235 #define bit_ABM 0x00000020 236 #define bit_LZCNT bit_ABM /* for gcc compat */ 237 #define bit_SSE4a 0x00000040 238 #define bit_PRFCHW 0x00000100 239 #define bit_XOP 0x00000800 240 #define bit_LWP 0x00008000 241 #define bit_FMA4 0x00010000 242 #define bit_TBM 0x00200000 243 #define bit_MWAITX 0x20000000 244 245 /* Features in %edx for leaf 0x80000001 */ 246 #define bit_MMXEXT 0x00400000 247 #define bit_LM 0x20000000 248 #define bit_3DNOWP 0x40000000 249 #define bit_3DNOW 0x80000000 250 251 /* Features in %ebx for leaf 0x80000008 */ 252 #define bit_CLZERO 0x00000001 253 #define bit_RDPRU 0x00000010 254 #define bit_WBNOINVD 0x00000200 255 256 /* Features in %ebx for leaf 0x24 */ 257 #define bit_AVX10_256 0x00020000 258 #define bit_AVX10_512 0x00040000 259 260 #ifdef __i386__ 261 #define __cpuid(__leaf, __eax, __ebx, __ecx, __edx) \ 262 __asm("cpuid" : "=a"(__eax), "=b" (__ebx), "=c"(__ecx), "=d"(__edx) \ 263 : "0"(__leaf)) 264 265 #define __cpuid_count(__leaf, __count, __eax, __ebx, __ecx, __edx) \ 266 __asm("cpuid" : "=a"(__eax), "=b" (__ebx), "=c"(__ecx), "=d"(__edx) \ 267 : "0"(__leaf), "2"(__count)) 268 #else 269 /* x86-64 uses %rbx as the base register, so preserve it. */ 270 #define __cpuid(__leaf, __eax, __ebx, __ecx, __edx) \ 271 __asm(" xchgq %%rbx,%q1\n" \ 272 " cpuid\n" \ 273 " xchgq %%rbx,%q1" \ 274 : "=a"(__eax), "=r" (__ebx), "=c"(__ecx), "=d"(__edx) \ 275 : "0"(__leaf)) 276 277 #define __cpuid_count(__leaf, __count, __eax, __ebx, __ecx, __edx) \ 278 __asm(" xchgq %%rbx,%q1\n" \ 279 " cpuid\n" \ 280 " xchgq %%rbx,%q1" \ 281 : "=a"(__eax), "=r" (__ebx), "=c"(__ecx), "=d"(__edx) \ 282 : "0"(__leaf), "2"(__count)) 283 #endif 284 285 static __inline unsigned int __get_cpuid_max (unsigned int __leaf, 286 unsigned int *__sig) 287 { 288 unsigned int __eax, __ebx, __ecx, __edx; 289 #ifdef __i386__ 290 int __cpuid_supported; 291 292 __asm(" pushfl\n" 293 " popl %%eax\n" 294 " movl %%eax,%%ecx\n" 295 " xorl $0x00200000,%%eax\n" 296 " pushl %%eax\n" 297 " popfl\n" 298 " pushfl\n" 299 " popl %%eax\n" 300 " movl $0,%0\n" 301 " cmpl %%eax,%%ecx\n" 302 " je 1f\n" 303 " movl $1,%0\n" 304 "1:" 305 : "=r" (__cpuid_supported) : : "eax", "ecx"); 306 if (!__cpuid_supported) 307 return 0; 308 #endif 309 310 __cpuid(__leaf, __eax, __ebx, __ecx, __edx); 311 if (__sig) 312 *__sig = __ebx; 313 return __eax; 314 } 315 316 static __inline int __get_cpuid (unsigned int __leaf, unsigned int *__eax, 317 unsigned int *__ebx, unsigned int *__ecx, 318 unsigned int *__edx) 319 { 320 unsigned int __max_leaf = __get_cpuid_max(__leaf & 0x80000000, 0); 321 322 if (__max_leaf == 0 || __max_leaf < __leaf) 323 return 0; 324 325 __cpuid(__leaf, *__eax, *__ebx, *__ecx, *__edx); 326 return 1; 327 } 328 329 static __inline int __get_cpuid_count (unsigned int __leaf, 330 unsigned int __subleaf, 331 unsigned int *__eax, unsigned int *__ebx, 332 unsigned int *__ecx, unsigned int *__edx) 333 { 334 unsigned int __max_leaf = __get_cpuid_max(__leaf & 0x80000000, 0); 335 336 if (__max_leaf == 0 || __max_leaf < __leaf) 337 return 0; 338 339 __cpuid_count(__leaf, __subleaf, *__eax, *__ebx, *__ecx, *__edx); 340 return 1; 341 } 342 343 // In some configurations, __cpuidex is defined as a builtin (primarily 344 // -fms-extensions) which will conflict with the __cpuidex definition below. 345 #if !(__has_builtin(__cpuidex)) 346 static __inline void __cpuidex(int __cpu_info[4], int __leaf, int __subleaf) { 347 __cpuid_count(__leaf, __subleaf, __cpu_info[0], __cpu_info[1], __cpu_info[2], 348 __cpu_info[3]); 349 } 350 #endif 351 352 #endif /* __CPUID_H */ 353