diff options
Diffstat (limited to 'MdePkg/Library/BaseCpuLib/Ia32/CpuSleepGcc.c')
-rw-r--r-- | MdePkg/Library/BaseCpuLib/Ia32/CpuSleepGcc.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseCpuLib/Ia32/CpuSleepGcc.c b/MdePkg/Library/BaseCpuLib/Ia32/CpuSleepGcc.c new file mode 100644 index 0000000000..a684059b59 --- /dev/null +++ b/MdePkg/Library/BaseCpuLib/Ia32/CpuSleepGcc.c @@ -0,0 +1,33 @@ +/** @file + CpuSleep function for Ia32/X64 GCC. + + Copyright (c) 2006 - 2008, Intel Corporation<BR> + Portions copyright (c) 2008-2009 Apple Inc.<BR> + All rights reserved. This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + + +/** + 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"); +} + |