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Last change
on this file since 80924 was 80721, checked in by vboxsync, 6 years ago |
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Devices/EFI/FirmwareNew: Start upgrade process to edk2-stable201908 (compiles on Windows and works to some extent), bugref:4643
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| 1 | /** @file
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| 2 | IA-32/x64 AsmRdRandxx()
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| 3 | Generates random number through CPU RdRand instruction.
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| 4 |
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| 5 | Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
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| 6 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 7 |
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| 8 | **/
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| 9 |
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| 10 | #include "BaseLibInternals.h"
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| 11 |
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| 12 | /**
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| 13 | Generates a 16-bit random number through RDRAND instruction.
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| 14 |
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| 15 | if Rand is NULL, then ASSERT().
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| 16 |
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| 17 | @param[out] Rand Buffer pointer to store the random result.
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| 18 |
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| 19 | @retval TRUE RDRAND call was successful.
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| 20 | @retval FALSE Failed attempts to call RDRAND.
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| 21 |
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| 22 | **/
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| 23 | BOOLEAN
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| 24 | EFIAPI
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| 25 | AsmRdRand16 (
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| 26 | OUT UINT16 *Rand
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| 27 | )
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| 28 | {
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| 29 | ASSERT (Rand != NULL);
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| 30 | return InternalX86RdRand16 (Rand);
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| 31 | }
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| 32 |
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| 33 | /**
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| 34 | Generates a 32-bit random number through RDRAND instruction.
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| 35 |
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| 36 | if Rand is NULL, then ASSERT().
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| 37 |
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| 38 | @param[out] Rand Buffer pointer to store the random result.
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| 39 |
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| 40 | @retval TRUE RDRAND call was successful.
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| 41 | @retval FALSE Failed attempts to call RDRAND.
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| 42 |
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| 43 | **/
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| 44 | BOOLEAN
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| 45 | EFIAPI
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| 46 | AsmRdRand32 (
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| 47 | OUT UINT32 *Rand
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| 48 | )
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| 49 | {
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| 50 | ASSERT (Rand != NULL);
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| 51 | return InternalX86RdRand32 (Rand);
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| 52 | }
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| 53 |
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| 54 | /**
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| 55 | Generates a 64-bit random number through RDRAND instruction.
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| 56 |
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| 57 | if Rand is NULL, then ASSERT().
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| 58 |
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| 59 | @param[out] Rand Buffer pointer to store the random result.
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| 60 |
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| 61 | @retval TRUE RDRAND call was successful.
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| 62 | @retval FALSE Failed attempts to call RDRAND.
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| 63 |
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| 64 | **/
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| 65 | BOOLEAN
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| 66 | EFIAPI
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| 67 | AsmRdRand64 (
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| 68 | OUT UINT64 *Rand
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| 69 | )
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| 70 | {
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| 71 | ASSERT (Rand != NULL);
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| 72 | return InternalX86RdRand64 (Rand);
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| 73 | }
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