lib/eal/common/eal_common_cpuflags.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6
   7 #include <rte_common.h>
   8 #include <rte_cpuflags.h>
   9
  10 int
  11 rte_cpu_is_supported(void)
  12 {
  13         /* This is generated at compile-time by the build system */
  14         static const enum rte_cpu_flag_t compile_time_flags[] = {
  15                         RTE_COMPILE_TIME_CPUFLAGS
  16         };
  17         unsigned count = RTE_DIM(compile_time_flags), i;
  18         int ret;
  19
  20         for (i = 0; i < count; i++) {
  21                 ret = rte_cpu_get_flag_enabled(compile_time_flags[i]);
  22
  23                 if (ret < 0) {
  24                         fprintf(stderr,
  25                                 "ERROR: CPU feature flag lookup failed with error %d\n",
  26                                 ret);
  27                         return 0;
  28                 }
  29                 if (!ret) {
  30                         fprintf(stderr,
  31                                 "ERROR: This system does not support \"%s\".\n"
  32                                 "Please check that RTE_MACHINE is set correctly.\n",
  33                                 rte_cpu_get_flag_name(compile_time_flags[i]));
  34                         return 0;
  35                 }
  36         }
  37
  38         return 1;
  39 }