| 1 | // |
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| 2 | // Redistribution and use in source and binary forms, with or without |
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| 3 | // modification, are permitted provided that the following conditions |
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| 4 | // are met: |
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| 5 | // * Redistributions of source code must retain the above copyright |
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| 6 | // notice, this list of conditions and the following disclaimer. |
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| 7 | // * Redistributions in binary form must reproduce the above copyright |
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| 8 | // notice, this list of conditions and the following disclaimer in the |
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| 9 | // documentation and/or other materials provided with the distribution. |
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| 10 | // * Neither the name of NVIDIA CORPORATION nor the names of its |
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| 11 | // contributors may be used to endorse or promote products derived |
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| 12 | // from this software without specific prior written permission. |
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| 13 | // |
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| 14 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY |
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| 15 | // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 16 | // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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| 17 | // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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| 18 | // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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| 19 | // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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| 20 | // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| 21 | // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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| 22 | // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 23 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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| 24 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 25 | // |
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| 26 | // Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved. |
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| 27 | // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved. |
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| 28 | // Copyright (c) 2001-2004 NovodeX AG. All rights reserved. |
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| 29 | |
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| 30 | #ifndef PSFOUNDATION_PSUNIXFPU_H |
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| 31 | #define PSFOUNDATION_PSUNIXFPU_H |
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| 32 | |
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| 33 | #include "foundation/PxPreprocessor.h" |
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| 34 | |
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| 35 | #if PX_LINUX || PX_PS4 || PX_OSX |
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| 36 | |
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| 37 | #if PX_X86 || PX_X64 |
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| 38 | #if PX_EMSCRIPTEN |
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| 39 | #include <emmintrin.h> |
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| 40 | #endif |
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| 41 | #include <xmmintrin.h> |
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| 42 | #elif PX_NEON |
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| 43 | #include <arm_neon.h> |
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| 44 | #endif |
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| 45 | |
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| 46 | PX_INLINE physx::shdfnd::SIMDGuard::SIMDGuard() |
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| 47 | { |
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| 48 | #if !PX_EMSCRIPTEN && (PX_X86 || PX_X64) |
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| 49 | mControlWord = _mm_getcsr(); |
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| 50 | // set default (disable exceptions: _MM_MASK_MASK) and FTZ (_MM_FLUSH_ZERO_ON), DAZ (_MM_DENORMALS_ZERO_ON: (1<<6)) |
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| 51 | _mm_setcsr(_MM_MASK_MASK | _MM_FLUSH_ZERO_ON | (1 << 6)); |
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| 52 | #endif |
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| 53 | } |
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| 54 | |
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| 55 | PX_INLINE physx::shdfnd::SIMDGuard::~SIMDGuard() |
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| 56 | { |
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| 57 | #if !PX_EMSCRIPTEN && (PX_X86 || PX_X64) |
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| 58 | // restore control word and clear exception flags |
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| 59 | // (setting exception state flags cause exceptions on the first following fp operation) |
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| 60 | _mm_setcsr(i: mControlWord & ~_MM_EXCEPT_MASK); |
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| 61 | #endif |
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| 62 | } |
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| 63 | |
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| 64 | #else |
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| 65 | #error No SIMD implementation for this unix platform. |
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| 66 | #endif // PX_LINUX || PX_PS4 || PX_OSX |
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| 67 | |
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| 68 | #endif // #ifndef PSFOUNDATION_PSUNIXFPU_H |
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| 69 | |
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