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1 | /*===---- rdseedintrin.h - RDSEED intrinsics -------------------------------=== |
---|---|
2 | * |
3 | * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | * See https://llvm.org/LICENSE.txt for license information. |
5 | * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | * |
7 | *===-----------------------------------------------------------------------=== |
8 | */ |
9 | |
10 | #ifndef __IMMINTRIN_H |
11 | #error "Never use <rdseedintrin.h> directly; include <immintrin.h> instead." |
12 | #endif |
13 | |
14 | #ifndef __RDSEEDINTRIN_H |
15 | #define __RDSEEDINTRIN_H |
16 | |
17 | /* Define the default attributes for the functions in this file. */ |
18 | #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("rdseed"))) |
19 | |
20 | /// Stores a hardware-generated 16-bit random value in the memory at \a __p. |
21 | /// |
22 | /// The random number generator complies with NIST SP800-90B and SP800-90C. |
23 | /// |
24 | /// \code{.operation} |
25 | /// IF HW_NRND_GEN.ready == 1 |
26 | /// Store16(__p, HW_NRND_GEN.data) |
27 | /// result := 1 |
28 | /// ELSE |
29 | /// Store16(__p, 0) |
30 | /// result := 0 |
31 | /// END |
32 | /// \endcode |
33 | /// |
34 | /// \headerfile <immintrin.h> |
35 | /// |
36 | /// This intrinsic corresponds to the \c RDSEED instruction. |
37 | /// |
38 | /// \param __p |
39 | /// Pointer to memory for storing the 16-bit random number. |
40 | /// \returns 1 if a random number was generated, 0 if not. |
41 | static __inline__ int __DEFAULT_FN_ATTRS |
42 | _rdseed16_step(unsigned short *__p) |
43 | { |
44 | return (int) __builtin_ia32_rdseed16_step(__p); |
45 | } |
46 | |
47 | /// Stores a hardware-generated 32-bit random value in the memory at \a __p. |
48 | /// |
49 | /// The random number generator complies with NIST SP800-90B and SP800-90C. |
50 | /// |
51 | /// \code{.operation} |
52 | /// IF HW_NRND_GEN.ready == 1 |
53 | /// Store32(__p, HW_NRND_GEN.data) |
54 | /// result := 1 |
55 | /// ELSE |
56 | /// Store32(__p, 0) |
57 | /// result := 0 |
58 | /// END |
59 | /// \endcode |
60 | /// |
61 | /// \headerfile <immintrin.h> |
62 | /// |
63 | /// This intrinsic corresponds to the \c RDSEED instruction. |
64 | /// |
65 | /// \param __p |
66 | /// Pointer to memory for storing the 32-bit random number. |
67 | /// \returns 1 if a random number was generated, 0 if not. |
68 | static __inline__ int __DEFAULT_FN_ATTRS |
69 | _rdseed32_step(unsigned int *__p) |
70 | { |
71 | return (int) __builtin_ia32_rdseed32_step(__p); |
72 | } |
73 | |
74 | #ifdef __x86_64__ |
75 | /// Stores a hardware-generated 64-bit random value in the memory at \a __p. |
76 | /// |
77 | /// The random number generator complies with NIST SP800-90B and SP800-90C. |
78 | /// |
79 | /// \code{.operation} |
80 | /// IF HW_NRND_GEN.ready == 1 |
81 | /// Store64(__p, HW_NRND_GEN.data) |
82 | /// result := 1 |
83 | /// ELSE |
84 | /// Store64(__p, 0) |
85 | /// result := 0 |
86 | /// END |
87 | /// \endcode |
88 | /// |
89 | /// \headerfile <immintrin.h> |
90 | /// |
91 | /// This intrinsic corresponds to the \c RDSEED instruction. |
92 | /// |
93 | /// \param __p |
94 | /// Pointer to memory for storing the 64-bit random number. |
95 | /// \returns 1 if a random number was generated, 0 if not. |
96 | static __inline__ int __DEFAULT_FN_ATTRS |
97 | _rdseed64_step(unsigned long long *__p) |
98 | { |
99 | return (int) __builtin_ia32_rdseed64_step(__p); |
100 | } |
101 | #endif |
102 | |
103 | #undef __DEFAULT_FN_ATTRS |
104 | |
105 | #endif /* __RDSEEDINTRIN_H */ |
106 |
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