1 files changed, 100 insertions, 0 deletions
diff --git a/src/common/cpu.c b/src/common/cpu.c
new file mode 100644
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--- /dev/null
+++ b/src/common/cpu.c
@@ -0,0 +1,100 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * cpu.c - obtention d'indications de fonctionnalités liées au CPU
+ *
+ * Copyright (C) 2022 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  Chrysalide is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Chrysalide is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Chrysalide.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "cpu.h"
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Indique les capacités de calculs parallèles anticipées.      *
+*                                                                             *
+*  Retour      : Fonctionnalités disponibles lors de la compilation.          *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+CPUSMIDFeature get_supported_cpu_smid_feature(void)
+{
+    CPUSMIDFeature result;                  /* Indications à retourner     */
+
+    result = CSF_NONE;
+
+    /**
+     * $ gcc -mavx512f -dM -E - < /dev/null | grep AVX
+     * #define __AVX512F__ 1
+     * #define __AVX__ 1
+     * #define __AVX2__ 1
+     */
+
+#ifdef __AVX2__
+    result |= CSF_AVX2;
+#endif
+
+#ifdef __AVX512F__
+    result |= CSF_AVX512;
+#endif
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Indique les capacités de calculs parallèles sollicitables.   *
+*                                                                             *
+*  Retour      : Fonctionnalités disponibles dans l'environnement.            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+CPUSMIDFeature get_avalaible_cpu_smid_feature(void)
+{
+    CPUSMIDFeature result;                  /* Indications à retourner     */
+
+    result = CSF_NONE;
+
+    /**
+     * Cf. Documentations suivantes :
+     *   - https://www.intel.com/content/dam/develop/external/us/en/documents/how-to-detect-new-instruction-support-in-the-4th-generation-intel-core-processor-family.pdf
+     *   - https://gcc.gnu.org/onlinedocs/gcc/x86-Built-in-Functions.html
+     */
+
+  __builtin_cpu_init();
+
+  if (__builtin_cpu_supports("ssse3"))
+      result |= CSF_AVX2;
+
+  if (__builtin_cpu_supports("avx512f"))
+      result |= CSF_AVX512;
+
+    return result;
+
+}