diff options
author | Thiago Macieira <thiago.macieira@intel.com> | 2017-04-13 15:44:45 -0700 |
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committer | Thiago Macieira <thiago.macieira@intel.com> | 2017-06-12 06:14:48 +0000 |
commit | dfdc466dc1a7b22cbab700a188daba4f052a25ce (patch) | |
tree | 3eec9d8b2b32a55b84119c5346482a2572645337 /config.tests/common | |
parent | f17095653ed54c7c253ade6ff639cae6a372cb08 (diff) |
Add proper detection of x86 RDRAND instruction
The instruction is "RDRAND", but the feature name, according to GCC, is
RDRND, so I had to change some macros in qsimd_p.h.
Change-Id: Icd0e0d4b27cb4e5eb892fffd14b5166779137e63
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Diffstat (limited to 'config.tests/common')
-rw-r--r-- | config.tests/common/rdrnd/rdrnd.cpp | 56 | ||||
-rw-r--r-- | config.tests/common/rdrnd/rdrnd.pro | 3 |
2 files changed, 59 insertions, 0 deletions
diff --git a/config.tests/common/rdrnd/rdrnd.cpp b/config.tests/common/rdrnd/rdrnd.cpp new file mode 100644 index 0000000000..597f7257bf --- /dev/null +++ b/config.tests/common/rdrnd/rdrnd.cpp @@ -0,0 +1,56 @@ +/**************************************************************************** +** +** Copyright (C) 2017 Intel Corporation. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the config.tests of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <immintrin.h> + +int main(int, char**) +{ + unsigned short us; + unsigned int ui; + if (_rdrand16_step(&us)) + return 1; + if (_rdrand32_step(&ui)) + return 1; +#if defined(__x86_64) || defined(__x86_64__) || defined(__amd64) || defined(_M_X64) + unsigned long long ull; + if (_rdrand64_step(&ull)) + return 1; +#endif + return 0; +} diff --git a/config.tests/common/rdrnd/rdrnd.pro b/config.tests/common/rdrnd/rdrnd.pro new file mode 100644 index 0000000000..37e636dc3f --- /dev/null +++ b/config.tests/common/rdrnd/rdrnd.pro @@ -0,0 +1,3 @@ +SOURCES += rdrnd.cpp +!defined(QMAKE_CFLAGS_RDRND, "var"): error("This compiler does not support the RDRAND instruction") +else: QMAKE_CXXFLAGS += $$QMAKE_CFLAGS_RDRND |