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fxsrintrin.h
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1 /*===---- fxsrintrin.h - FXSR intrinsic ------------------------------------===
2  *
3  * Permission is hereby granted, free of charge, to any person obtaining a copy
4  * of this software and associated documentation files (the "Software"), to deal
5  * in the Software without restriction, including without limitation the rights
6  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7  * copies of the Software, and to permit persons to whom the Software is
8  * furnished to do so, subject to the following conditions:
9  *
10  * The above copyright notice and this permission notice shall be included in
11  * all copies or substantial portions of the Software.
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14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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23 
24 #ifndef __IMMINTRIN_H
25 #error "Never use <fxsrintrin.h> directly; include <immintrin.h> instead."
26 #endif
27 
28 #ifndef __FXSRINTRIN_H
29 #define __FXSRINTRIN_H
30 
31 #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("fxsr")))
32 
33 /// \brief Saves the XMM, MMX, MXCSR and x87 FPU registers into a 512-byte
34 /// memory region pointed to by the input parameter \a __p.
35 ///
36 /// \headerfile <x86intrin.h>
37 ///
38 /// This intrinsic corresponds to the <c> FXSAVE </c> instruction.
39 ///
40 /// \param __p
41 /// A pointer to a 512-byte memory region. The beginning of this memory
42 /// region should be aligned on a 16-byte boundary.
43 static __inline__ void __DEFAULT_FN_ATTRS
44 _fxsave(void *__p)
45 {
46  return __builtin_ia32_fxsave(__p);
47 }
48 
49 /// \brief Restores the XMM, MMX, MXCSR and x87 FPU registers from the 512-byte
50 /// memory region pointed to by the input parameter \a __p. The contents of
51 /// this memory region should have been written to by a previous \c _fxsave
52 /// or \c _fxsave64 intrinsic.
53 ///
54 /// \headerfile <x86intrin.h>
55 ///
56 /// This intrinsic corresponds to the <c> FXRSTOR </c> instruction.
57 ///
58 /// \param __p
59 /// A pointer to a 512-byte memory region. The beginning of this memory
60 /// region should be aligned on a 16-byte boundary.
61 static __inline__ void __DEFAULT_FN_ATTRS
62 _fxrstor(void *__p)
63 {
64  return __builtin_ia32_fxrstor(__p);
65 }
66 
67 #ifdef __x86_64__
68 /// \brief Saves the XMM, MMX, MXCSR and x87 FPU registers into a 512-byte
69 /// memory region pointed to by the input parameter \a __p.
70 ///
71 /// \headerfile <x86intrin.h>
72 ///
73 /// This intrinsic corresponds to the <c> FXSAVE64 </c> instruction.
74 ///
75 /// \param __p
76 /// A pointer to a 512-byte memory region. The beginning of this memory
77 /// region should be aligned on a 16-byte boundary.
78 static __inline__ void __DEFAULT_FN_ATTRS
79 _fxsave64(void *__p)
80 {
81  return __builtin_ia32_fxsave64(__p);
82 }
83 
84 /// \brief Restores the XMM, MMX, MXCSR and x87 FPU registers from the 512-byte
85 /// memory region pointed to by the input parameter \a __p. The contents of
86 /// this memory region should have been written to by a previous \c _fxsave
87 /// or \c _fxsave64 intrinsic.
88 ///
89 /// \headerfile <x86intrin.h>
90 ///
91 /// This intrinsic corresponds to the <c> FXRSTOR64 </c> instruction.
92 ///
93 /// \param __p
94 /// A pointer to a 512-byte memory region. The beginning of this memory
95 /// region should be aligned on a 16-byte boundary.
96 static __inline__ void __DEFAULT_FN_ATTRS
97 _fxrstor64(void *__p)
98 {
99  return __builtin_ia32_fxrstor64(__p);
100 }
101 #endif
102 
103 #undef __DEFAULT_FN_ATTRS
104 
105 #endif
#define __DEFAULT_FN_ATTRS
Definition: fxsrintrin.h:31
static __inline unsigned char unsigned int unsigned int unsigned int * __p
Definition: adxintrin.h:38
static __inline__ void __DEFAULT_FN_ATTRS _fxrstor(void *__p)
Restores the XMM, MMX, MXCSR and x87 FPU registers from the 512-byte memory region pointed to by the ...
Definition: fxsrintrin.h:62
static __inline__ void __DEFAULT_FN_ATTRS _fxsave(void *__p)
Saves the XMM, MMX, MXCSR and x87 FPU registers into a 512-byte memory region pointed to by the input...
Definition: fxsrintrin.h:44