cpu-feature: Add a common class to query available CPU features

Currently supported is x86/x64 via cpuid() for some common features.
2015-04-13 15:31:58 +02:00
parent 6a84a4049d
commit f155880eda
4 changed files with 167 additions and 3 deletions
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2015 Martin Willi
+ * Copyright (C) 2015 revosec AG
+ *
+ * This program 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 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program 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.
+ */
+
+/**
+ * @defgroup cpu_feature cpu_feature
+ * @{ @ingroup utils
+ */
+
+#ifndef CPU_FEATURE_H_
+#define CPU_FEATURE_H_
+
+#include <library.h>
+
+typedef enum {
+	/** x86/x64 extensions */
+	CPU_FEATURE_MMX =							(1 <<  0),
+	CPU_FEATURE_SSE =							(1 <<  1),
+	CPU_FEATURE_SSE2 =							(1 <<  2),
+	CPU_FEATURE_SSE3 =							(1 <<  3),
+	CPU_FEATURE_SSSE3 =							(1 <<  4),
+	CPU_FEATURE_SSE41 =							(1 <<  5),
+	CPU_FEATURE_SSE42 =							(1 <<  6),
+	CPU_FEATURE_AVX =							(1 <<  7),
+	CPU_FEATURE_RDRAND =						(1 <<  8),
+	CPU_FEATURE_AESNI =							(1 <<  9),
+	CPU_FEATURE_PCLMULQDQ =						(1 << 10),
+} cpu_feature_t;
+
+/**
+ * Get a bitmask for all supported CPU features
+ */
+cpu_feature_t cpu_feature_get_all();
+
+/**
+ * Check if a given set of CPU features is available.
+ */
+bool cpu_feature_available(cpu_feature_t feature);
+
+#endif /** CPU_FEATURE_H_ @}*/