sysdeps/x86/tst-cpu-features-cpuinfo.c

   1 /* Test CPU feature data against /proc/cpuinfo.
   2    This file is part of the GNU C Library.
   3    Copyright (C) 2012-2021 Free Software Foundation, Inc.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <sys/platform/x86.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23
  24 static char *cpu_flags;
  25
  26 /* Search for flags in /proc/cpuinfo and store line
  27    in cpu_flags.  */
  28 void
  29 get_cpuinfo (void)
  30 {
  31   FILE *f;
  32   char *line = NULL;
  33   size_t len = 0;
  34   ssize_t read;
  35
  36   f = fopen ("/proc/cpuinfo", "r");
  37   if (f == NULL)
  38     {
  39       printf ("cannot open /proc/cpuinfo\n");
  40       exit (1);
  41     }
  42
  43   while ((read = getline (&line, &len, f)) != -1)
  44     {
  45       if (strncmp (line, "flags", 5) == 0)
  46        {
  47          cpu_flags = strdup (line);
  48          break;
  49        }
  50     }
  51   fclose (f);
  52   free (line);
  53 }
  54
  55 int
  56 check_proc (const char *proc_name, const char *search_name, int flag,
  57             int usable, const char *name)
  58 {
  59   int found = 0;
  60
  61   printf ("Checking %s:\n", name);
  62   printf ("  %s: %d\n", name, flag);
  63   char *str = strstr (cpu_flags, search_name);
  64   if (str == NULL)
  65     {
  66       /* If searching for " XXX " failed, try " XXX\n".  */
  67       size_t len = strlen (search_name);
  68       char buffer[80];
  69       if (len >= sizeof buffer)
  70         abort ();
  71       memcpy (buffer, search_name, len + 1);
  72       buffer[len - 1] = '\n';
  73       str = strstr (cpu_flags, buffer);
  74     }
  75   if (str != NULL)
  76     found = 1;
  77   printf ("  cpuinfo (%s): %d\n", proc_name, found);
  78
  79   if (found != flag)
  80     {
  81       if (found || usable)
  82         printf (" *** failure ***\n");
  83       else
  84         {
  85           printf (" *** missing in /proc/cpuinfo ***\n");
  86           return 0;
  87         }
  88     }
  89
  90   return (found != flag);
  91 }
  92
  93 #define CHECK_PROC(str, name) \
  94   check_proc (#str, " "#str" ", HAS_CPU_FEATURE (name), \
  95               CPU_FEATURE_USABLE (name), \
  96               "HAS_CPU_FEATURE (" #name ")")
  97
  98 static int
  99 do_test (int argc, char **argv)
 100 {
 101   int fails = 0;
 102
 103   get_cpuinfo ();
 104   fails += CHECK_PROC (acpi, ACPI);
 105   fails += CHECK_PROC (adx, ADX);
 106   fails += CHECK_PROC (apic, APIC);
 107   fails += CHECK_PROC (aes, AES);
 108   fails += CHECK_PROC (amx_bf16, AMX_BF16);
 109   fails += CHECK_PROC (amx_int8, AMX_INT8);
 110   fails += CHECK_PROC (amx_tile, AMX_TILE);
 111   fails += CHECK_PROC (arch_capabilities, ARCH_CAPABILITIES);
 112   fails += CHECK_PROC (avx, AVX);
 113   fails += CHECK_PROC (avx2, AVX2);
 114   fails += CHECK_PROC (avx512_4fmaps, AVX512_4FMAPS);
 115   fails += CHECK_PROC (avx512_4vnniw, AVX512_4VNNIW);
 116   fails += CHECK_PROC (avx512_bf16, AVX512_BF16);
 117   fails += CHECK_PROC (avx512_bitalg, AVX512_BITALG);
 118   fails += CHECK_PROC (avx512ifma, AVX512_IFMA);
 119   fails += CHECK_PROC (avx512vbmi, AVX512_VBMI);
 120   fails += CHECK_PROC (avx512_vbmi2, AVX512_VBMI2);
 121   fails += CHECK_PROC (avx512_vnni, AVX512_VNNI);
 122   fails += CHECK_PROC (avx512_vp2intersect, AVX512_VP2INTERSECT);
 123   fails += CHECK_PROC (avx512_vpopcntdq, AVX512_VPOPCNTDQ);
 124   fails += CHECK_PROC (avx512bw, AVX512BW);
 125   fails += CHECK_PROC (avx512cd, AVX512CD);
 126   fails += CHECK_PROC (avx512er, AVX512ER);
 127   fails += CHECK_PROC (avx512dq, AVX512DQ);
 128   fails += CHECK_PROC (avx512f, AVX512F);
 129   fails += CHECK_PROC (avx512pf, AVX512PF);
 130   fails += CHECK_PROC (avx512vl, AVX512VL);
 131   fails += CHECK_PROC (bmi1, BMI1);
 132   fails += CHECK_PROC (bmi2, BMI2);
 133   fails += CHECK_PROC (cldemote, CLDEMOTE);
 134   fails += CHECK_PROC (clflushopt, CLFLUSHOPT);
 135   fails += CHECK_PROC (clflush, CLFSH);
 136   fails += CHECK_PROC (clwb, CLWB);
 137   fails += CHECK_PROC (cmov, CMOV);
 138   fails += CHECK_PROC (cx16, CMPXCHG16B);
 139   fails += CHECK_PROC (cnxt_id, CNXT_ID);
 140   fails += CHECK_PROC (core_capabilities, CORE_CAPABILITIES);
 141   fails += CHECK_PROC (cx8, CX8);
 142   fails += CHECK_PROC (dca, DCA);
 143   fails += CHECK_PROC (de, DE);
 144   fails += CHECK_PROC (zero_fcs_fds, DEPR_FPU_CS_DS);
 145   fails += CHECK_PROC (dts, DS);
 146   fails += CHECK_PROC (ds_cpl, DS_CPL);
 147   fails += CHECK_PROC (dtes64, DTES64);
 148   fails += CHECK_PROC (est, EIST);
 149   fails += CHECK_PROC (enqcmd, ENQCMD);
 150   fails += CHECK_PROC (erms, ERMS);
 151   fails += CHECK_PROC (f16c, F16C);
 152   fails += CHECK_PROC (fma, FMA);
 153   fails += CHECK_PROC (fma4, FMA4);
 154   fails += CHECK_PROC (fpu, FPU);
 155   fails += CHECK_PROC (fsgsbase, FSGSBASE);
 156   fails += CHECK_PROC (fsrm, FSRM);
 157   fails += CHECK_PROC (fxsr, FXSR);
 158   fails += CHECK_PROC (gfni, GFNI);
 159   fails += CHECK_PROC (hle, HLE);
 160   fails += CHECK_PROC (ht, HTT);
 161   fails += CHECK_PROC (hybrid, HYBRID);
 162   fails += CHECK_PROC (ibrs, IBRS_IBPB);
 163   fails += CHECK_PROC (ibt, IBT);
 164   fails += CHECK_PROC (invariant_tsc, INVARIANT_TSC);
 165   fails += CHECK_PROC (invpcid, INVPCID);
 166   fails += CHECK_PROC (flush_l1d, L1D_FLUSH);
 167   fails += CHECK_PROC (lahf_lm, LAHF64_SAHF64);
 168   fails += CHECK_PROC (lm, LM);
 169   fails += CHECK_PROC (lwp, LWP);
 170   fails += CHECK_PROC (abm, LZCNT);
 171   fails += CHECK_PROC (mca, MCA);
 172   fails += CHECK_PROC (mce, MCE);
 173   fails += CHECK_PROC (md_clear, MD_CLEAR);
 174   fails += CHECK_PROC (mmx, MMX);
 175   fails += CHECK_PROC (monitor, MONITOR);
 176   fails += CHECK_PROC (movbe, MOVBE);
 177   fails += CHECK_PROC (movdiri, MOVDIRI);
 178   fails += CHECK_PROC (movdir64b, MOVDIR64B);
 179   fails += CHECK_PROC (mpx, MPX);
 180   fails += CHECK_PROC (msr, MSR);
 181   fails += CHECK_PROC (mtrr, MTRR);
 182   fails += CHECK_PROC (nx, NX);
 183   fails += CHECK_PROC (ospke, OSPKE);
 184 #if 0
 185   /* NB: /proc/cpuinfo doesn't report this feature.  */
 186   fails += CHECK_PROC (osxsave, OSXSAVE);
 187 #endif
 188   fails += CHECK_PROC (pae, PAE);
 189   fails += CHECK_PROC (pdpe1gb, PAGE1GB);
 190   fails += CHECK_PROC (pat, PAT);
 191   fails += CHECK_PROC (pbe, PBE);
 192   fails += CHECK_PROC (pcid, PCID);
 193   fails += CHECK_PROC (pclmulqdq, PCLMULQDQ);
 194   fails += CHECK_PROC (pconfig, PCONFIG);
 195   fails += CHECK_PROC (pdcm, PDCM);
 196   fails += CHECK_PROC (pge, PGE);
 197   fails += CHECK_PROC (pks, PKS);
 198   fails += CHECK_PROC (pku, PKU);
 199   fails += CHECK_PROC (popcnt, POPCNT);
 200   fails += CHECK_PROC (3dnowprefetch, PREFETCHW);
 201   fails += CHECK_PROC (prefetchwt1, PREFETCHWT1);
 202   fails += CHECK_PROC (ptwrite, PTWRITE);
 203   fails += CHECK_PROC (pse, PSE);
 204   fails += CHECK_PROC (pse36, PSE_36);
 205   fails += CHECK_PROC (psn, PSN);
 206   fails += CHECK_PROC (rdpid, RDPID);
 207   fails += CHECK_PROC (rdrand, RDRAND);
 208   fails += CHECK_PROC (rdseed, RDSEED);
 209   fails += CHECK_PROC (rdt_a, RDT_A);
 210   fails += CHECK_PROC (cqm, RDT_M);
 211   fails += CHECK_PROC (rdtscp, RDTSCP);
 212   fails += CHECK_PROC (rtm, RTM);
 213   fails += CHECK_PROC (sdbg, SDBG);
 214   fails += CHECK_PROC (sep, SEP);
 215   fails += CHECK_PROC (serialize, SERIALIZE);
 216   fails += CHECK_PROC (sgx, SGX);
 217   fails += CHECK_PROC (sgx_lc, SGX_LC);
 218   fails += CHECK_PROC (sha_ni, SHA);
 219   fails += CHECK_PROC (shstk, SHSTK);
 220   fails += CHECK_PROC (smap, SMAP);
 221   fails += CHECK_PROC (smep, SMEP);
 222   fails += CHECK_PROC (smx, SMX);
 223   fails += CHECK_PROC (ss, SS);
 224   fails += CHECK_PROC (ssbd, SSBD);
 225   fails += CHECK_PROC (sse, SSE);
 226   fails += CHECK_PROC (sse2, SSE2);
 227   fails += CHECK_PROC (pni, SSE3);
 228   fails += CHECK_PROC (sse4_1, SSE4_1);
 229   fails += CHECK_PROC (sse4_2, SSE4_2);
 230   fails += CHECK_PROC (sse4a, SSE4A);
 231   fails += CHECK_PROC (ssse3, SSSE3);
 232   fails += CHECK_PROC (stibp, STIBP);
 233   fails += CHECK_PROC (svm, SVM);
 234 #ifdef __x86_64__
 235   /* NB: SYSCALL_SYSRET is 64-bit only.  */
 236   fails += CHECK_PROC (syscall, SYSCALL_SYSRET);
 237 #endif
 238   fails += CHECK_PROC (tbm, TBM);
 239   fails += CHECK_PROC (tm, TM);
 240   fails += CHECK_PROC (tm2, TM2);
 241   fails += CHECK_PROC (intel_pt, TRACE);
 242   fails += CHECK_PROC (tsc, TSC);
 243   fails += CHECK_PROC (tsc_adjust, TSC_ADJUST);
 244   fails += CHECK_PROC (tsc_deadline_timer, TSC_DEADLINE);
 245   fails += CHECK_PROC (tsxldtrk, TSXLDTRK);
 246   fails += CHECK_PROC (umip, UMIP);
 247   fails += CHECK_PROC (vaes, VAES);
 248   fails += CHECK_PROC (vme, VME);
 249   fails += CHECK_PROC (vmx, VMX);
 250   fails += CHECK_PROC (vpclmulqdq, VPCLMULQDQ);
 251   fails += CHECK_PROC (waitpkg, WAITPKG);
 252   fails += CHECK_PROC (wbnoinvd, WBNOINVD);
 253   fails += CHECK_PROC (x2apic, X2APIC);
 254   fails += CHECK_PROC (xfd, XFD);
 255   fails += CHECK_PROC (xgetbv1, XGETBV_ECX_1);
 256   fails += CHECK_PROC (xop, XOP);
 257   fails += CHECK_PROC (xsave, XSAVE);
 258   fails += CHECK_PROC (xsavec, XSAVEC);
 259   fails += CHECK_PROC (xsaveopt, XSAVEOPT);
 260   fails += CHECK_PROC (xsaves, XSAVES);
 261   fails += CHECK_PROC (xtpr, XTPRUPDCTRL);
 262
 263   printf ("%d differences between /proc/cpuinfo and glibc code.\n", fails);
 264
 265   return (fails != 0);
 266 }
 267
 268 #include "../../../test-skeleton.c"