audk/MdePkg/Library/BaseCpuLib/Ia32/CpuSleepGcc.c

28 lines
624 B
C

/** @file
CpuSleep function for Ia32/X64 GCC.
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
/**
Places the CPU in a sleep state until an interrupt is received.
Places the CPU in a sleep state until an interrupt is received. If interrupts
are disabled prior to calling this function, then the CPU will be placed in a
sleep state indefinitely.
**/
VOID
EFIAPI
CpuSleep (
VOID
)
{
__asm__ __volatile__ ("hlt"::: "memory");
}