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33 #include <rte_common.h>
34 #include <rte_cpuflags.h>
37 * This should prevent use of advanced instruction sets in this file. Otherwise
38 * the check function itself could cause a crash.
40 #ifdef __INTEL_COMPILER
41 #pragma optimize ("", off)
43 #define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
44 #if GCC_VERSION > 404000
45 #pragma GCC optimize ("O0")
50 * Checks if the machine is adequate for running the binary. If it is not, the
51 * program exits with status 1.
52 * The function attribute forces this function to be called before main(). But
53 * with ICC, the check is generated by the compiler.
55 #ifndef __INTEL_COMPILER
56 void __attribute__ ((__constructor__))
60 rte_cpu_check_supported(void)
62 /* This is generated at compile-time by the build system */
63 static const enum rte_cpu_flag_t compile_time_flags[] = {
64 RTE_COMPILE_TIME_CPUFLAGS
66 unsigned count = RTE_DIM(compile_time_flags), i;
69 for (i = 0; i < count; i++) {
70 ret = rte_cpu_get_flag_enabled(compile_time_flags[i]);
74 "ERROR: CPU feature flag lookup failed with error %d\n",
80 "ERROR: This system does not support \"%s\".\n"
81 "Please check that RTE_MACHINE is set correctly.\n",
82 cpu_feature_table[compile_time_flags[i]].name);