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authorMatthias Schiffer <mschiffer@universe-factory.net>2013-11-27 22:05:06 +0100
committerMatthias Schiffer <mschiffer@universe-factory.net>2013-11-28 04:30:58 +0100
commitca49096f5d02e351b928b2fd584bd7ca0d5fcf1f (patch)
treea12238be5b6fb17351872e7a46d400bb7b457b97
parent7a08e6823ef636917a95dbc4928048723efe864d (diff)
downloadfastd-ca49096f5d02e351b928b2fd584bd7ca0d5fcf1f.tar
fastd-ca49096f5d02e351b928b2fd584bd7ca0d5fcf1f.zip
Add CPUID function
-rw-r--r--src/cpuid.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/src/cpuid.h b/src/cpuid.h
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index 0000000..0558c09
--- /dev/null
+++ b/src/cpuid.h
@@ -0,0 +1,48 @@
+/*
+ Copyright (c) 2012-2013, Matthias Schiffer <mschiffer@universe-factory.net>
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation
+ and/or other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#ifndef _FASTD_CPUID_H_
+#define _FASTD_CPUID_H_
+
+#if !(defined(__i386__) || defined(__x86_64__))
+#error Tried to include cpuid.h on a non-x86 system
+#endif
+
+#include <stdint.h>
+
+
+#define CPUID_FXSR ((uint64_t)1 << 24)
+#define CPUID_PCLMULQDQ ((uint64_t)1 << 33)
+#define CPUID_SSSE3 ((uint64_t)1 << 41)
+
+
+static inline uint64_t fastd_cpuid(void) {
+ uint32_t edx, ecx;
+ asm("cpuid" : "=d"(edx), "=c"(ecx) : "a"((uint32_t)1));
+ return ((uint64_t)ecx) << 32 | edx;
+}
+
+#endif /* _FASTD_CPUID_H_ */