projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | |
| 6 | This program and the accompanying materials\r | |
| cf683fed | 7 | are licensed and made available under the terms and conditions of the BSD License\r |
| 8 | which accompanies this distribution. The full text of the license may be found at\r | |
| 35a17154 | 9 | http://opensource.org/licenses/bsd-license.php.\r |
| cf683fed | 10 | \r |
| 11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 13 | \r | |
| 14 | **/\r | |
| 15 | \r | |
| 16 | \r | |
| 17 | /**\r | |
| 18 | Places the CPU in a sleep state until an interrupt is received.\r | |
| 19 | \r | |
| 20 | Places the CPU in a sleep state until an interrupt is received. If interrupts\r | |
| 21 | are disabled prior to calling this function, then the CPU will be placed in a\r | |
| 22 | sleep state indefinitely.\r | |
| 23 | \r | |
| 24 | **/\r | |
| 25 | VOID\r | |
| 26 | EFIAPI\r | |
| 27 | CpuSleep (\r | |
| 28 | VOID\r | |
| 29 | )\r | |
| 30 | {\r | |
| 31 | __asm__ __volatile__ ("hlt"::: "memory");\r | |
| 32 | }\r | |
| 33 | \r |