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92 lines
2.8 KiB
92 lines
2.8 KiB
4 months ago
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/*===---- fxsrintrin.h - FXSR intrinsic ------------------------------------===
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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*===-----------------------------------------------------------------------===
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*/
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#ifndef __IMMINTRIN_H
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#error "Never use <fxsrintrin.h> directly; include <immintrin.h> instead."
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#endif
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#ifndef __FXSRINTRIN_H
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#define __FXSRINTRIN_H
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#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("fxsr")))
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/// Saves the XMM, MMX, MXCSR and x87 FPU registers into a 512-byte
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/// memory region pointed to by the input parameter \a __p.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> FXSAVE </c> instruction.
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///
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/// \param __p
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/// A pointer to a 512-byte memory region. The beginning of this memory
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/// region should be aligned on a 16-byte boundary.
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static __inline__ void __DEFAULT_FN_ATTRS
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_fxsave(void *__p)
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{
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__builtin_ia32_fxsave(__p);
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}
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/// Restores the XMM, MMX, MXCSR and x87 FPU registers from the 512-byte
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/// memory region pointed to by the input parameter \a __p. The contents of
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/// this memory region should have been written to by a previous \c _fxsave
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/// or \c _fxsave64 intrinsic.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> FXRSTOR </c> instruction.
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///
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/// \param __p
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/// A pointer to a 512-byte memory region. The beginning of this memory
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/// region should be aligned on a 16-byte boundary.
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static __inline__ void __DEFAULT_FN_ATTRS
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_fxrstor(void *__p)
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{
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__builtin_ia32_fxrstor(__p);
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}
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#ifdef __x86_64__
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/// Saves the XMM, MMX, MXCSR and x87 FPU registers into a 512-byte
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/// memory region pointed to by the input parameter \a __p.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> FXSAVE64 </c> instruction.
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///
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/// \param __p
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/// A pointer to a 512-byte memory region. The beginning of this memory
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/// region should be aligned on a 16-byte boundary.
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static __inline__ void __DEFAULT_FN_ATTRS
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_fxsave64(void *__p)
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{
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__builtin_ia32_fxsave64(__p);
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}
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/// Restores the XMM, MMX, MXCSR and x87 FPU registers from the 512-byte
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/// memory region pointed to by the input parameter \a __p. The contents of
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/// this memory region should have been written to by a previous \c _fxsave
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/// or \c _fxsave64 intrinsic.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the <c> FXRSTOR64 </c> instruction.
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///
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/// \param __p
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/// A pointer to a 512-byte memory region. The beginning of this memory
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/// region should be aligned on a 16-byte boundary.
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static __inline__ void __DEFAULT_FN_ATTRS
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_fxrstor64(void *__p)
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{
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__builtin_ia32_fxrstor64(__p);
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}
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#endif
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#undef __DEFAULT_FN_ATTRS
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#endif
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