1 /** @file 2 CpuSleep function for Ia32/X64 GCC. 3 4 Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> 5 Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> 6 This program and the accompanying materials 7 are licensed and made available under the terms and conditions of the BSD License 8 which accompanies this distribution. The full text of the license may be found at 9 http://opensource.org/licenses/bsd-license.php. 10 11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 13 14 **/ 15 16 17 /** 18 Places the CPU in a sleep state until an interrupt is received. 19 20 Places the CPU in a sleep state until an interrupt is received. If interrupts 21 are disabled prior to calling this function, then the CPU will be placed in a 22 sleep state indefinitely. 23 24 **/ 25 VOID 26 EFIAPI 27 CpuSleep ( 28 VOID 29 ) 30 { 31 __asm__ __volatile__ ("hlt"::: "memory"); 32 } 33 34
