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cf683fed | 1 | /** @file\r |
2 | CpuSleep function for Ia32/X64 GCC.\r | |
3 | \r | |
c9b34b8c HT |
4 | Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r |
5 | Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
9344f092 | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
cf683fed | 7 | \r |
8 | **/\r | |
9 | \r | |
cf683fed | 10 | /**\r |
11 | Places the CPU in a sleep state until an interrupt is received.\r | |
12 | \r | |
13 | Places the CPU in a sleep state until an interrupt is received. If interrupts\r | |
14 | are disabled prior to calling this function, then the CPU will be placed in a\r | |
15 | sleep state indefinitely.\r | |
16 | \r | |
17 | **/\r | |
18 | VOID\r | |
19 | EFIAPI\r | |
20 | CpuSleep (\r | |
21 | VOID\r | |
22 | )\r | |
23 | {\r | |
24 | __asm__ __volatile__ ("hlt"::: "memory");\r | |
25 | }\r |