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85 lines
2.5 KiB
C
Vendored
85 lines
2.5 KiB
C
Vendored
/*===---- xsavecintrin.h - XSAVEC 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 <xsavecintrin.h> directly; include <immintrin.h> instead."
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#endif
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#ifndef __XSAVECINTRIN_H
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#define __XSAVECINTRIN_H
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/* Define the default attributes for the functions in this file. */
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#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("xsavec")))
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/// Performs a full or partial save of processor state to the memory at
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/// \a __p. The exact state saved depends on the 64-bit mask \a __m and
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/// processor control register \c XCR0.
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///
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/// \code{.operation}
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/// mask[62:0] := __m[62:0] AND XCR0[62:0]
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/// FOR i := 0 TO 62
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/// IF mask[i] == 1
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/// CASE (i) OF
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/// 0: save X87 FPU state
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/// 1: save SSE state
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/// DEFAULT: __p.Ext_Save_Area[i] := ProcessorState[i]
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/// FI
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/// ENDFOR
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/// __p.Header.XSTATE_BV[62:0] := INIT_FUNCTION(mask[62:0])
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/// \endcode
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///
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/// \headerfile <immintrin.h>
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///
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/// This intrinsic corresponds to the \c XSAVEC instruction.
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///
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/// \param __p
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/// Pointer to the save area; must be 64-byte aligned.
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/// \param __m
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/// A 64-bit mask indicating what state should be saved.
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static __inline__ void __DEFAULT_FN_ATTRS
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_xsavec(void *__p, unsigned long long __m) {
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__builtin_ia32_xsavec(__p, __m);
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}
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#ifdef __x86_64__
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/// Performs a full or partial save of processor state to the memory at
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/// \a __p. The exact state saved depends on the 64-bit mask \a __m and
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/// processor control register \c XCR0.
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///
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/// \code{.operation}
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/// mask[62:0] := __m[62:0] AND XCR0[62:0]
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/// FOR i := 0 TO 62
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/// IF mask[i] == 1
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/// CASE (i) OF
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/// 0: save X87 FPU state
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/// 1: save SSE state
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/// DEFAULT: __p.Ext_Save_Area[i] := ProcessorState[i]
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/// FI
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/// ENDFOR
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/// __p.Header.XSTATE_BV[62:0] := INIT_FUNCTION(mask[62:0])
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/// \endcode
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///
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/// \headerfile <immintrin.h>
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///
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/// This intrinsic corresponds to the \c XSAVEC64 instruction.
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///
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/// \param __p
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/// Pointer to the save area; must be 64-byte aligned.
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/// \param __m
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/// A 64-bit mask indicating what state should be saved.
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static __inline__ void __DEFAULT_FN_ATTRS
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_xsavec64(void *__p, unsigned long long __m) {
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__builtin_ia32_xsavec64(__p, __m);
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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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