* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-#include <rte_cpuflags.h>
-/*
- * This should prevent use of advanced instruction sets in this file. Otherwise
- * the check function itself could cause a crash.
- */
-#ifdef __INTEL_COMPILER
-#pragma optimize ("", off)
-#else
-#define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
-#if GCC_VERSION > 404000
-#pragma GCC optimize ("O0")
-#endif
-#endif
+#include <stdio.h>
+
+#include <rte_common.h>
+#include <rte_cpuflags.h>
/**
* Checks if the machine is adequate for running the binary. If it is not, the
* program exits with status 1.
- * The function attribute forces this function to be called before main(). But
- * with ICC, the check is generated by the compiler.
*/
-#ifndef __INTEL_COMPILER
-void __attribute__ ((__constructor__))
-#else
void
-#endif
rte_cpu_check_supported(void)
+{
+ if (!rte_cpu_is_supported())
+ exit(1);
+}
+
+int
+rte_cpu_is_supported(void)
{
/* This is generated at compile-time by the build system */
static const enum rte_cpu_flag_t compile_time_flags[] = {
RTE_COMPILE_TIME_CPUFLAGS
};
- unsigned i;
+ unsigned count = RTE_DIM(compile_time_flags), i;
int ret;
- for (i = 0; i < sizeof(compile_time_flags)/sizeof(compile_time_flags[0]); i++) {
+ for (i = 0; i < count; i++) {
ret = rte_cpu_get_flag_enabled(compile_time_flags[i]);
if (ret < 0) {
fprintf(stderr,
"ERROR: CPU feature flag lookup failed with error %d\n",
ret);
- exit(1);
+ return 0;
}
if (!ret) {
fprintf(stderr,
"ERROR: This system does not support \"%s\".\n"
"Please check that RTE_MACHINE is set correctly.\n",
- cpu_feature_table[compile_time_flags[i]].name);
- exit(1);
+ rte_cpu_get_flag_name(compile_time_flags[i]));
+ return 0;
}
}
+
+ return 1;
}