projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 9095d37b | 1 | ;------------------------------------------------------------------------------\r |
| ebd04fc2 | 2 | ;\r |
| 3 | ; CpuPause() for ARM\r | |
| 4 | ;\r | |
| 9095d37b | 5 | ; Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r |
| bb817c56 HT |
6 | ; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r |
| 7 | ; This program and the accompanying materials\r | |
| ebd04fc2 | 8 | ; are licensed and made available under the terms and conditions of the BSD License\r |
| 9 | ; which accompanies this distribution. The full text of the license may be found at\r | |
| 35a17154 | 10 | ; http://opensource.org/licenses/bsd-license.php.\r |
| ebd04fc2 | 11 | ;\r |
| 12 | ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 13 | ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 14 | ;\r | |
| 15 | ;------------------------------------------------------------------------------\r | |
| 16 | \r | |
| 17 | EXPORT CpuPause\r | |
| 18 | AREA cpu_pause, CODE, READONLY\r | |
| 19 | \r | |
| 20 | ;/**\r | |
| 21 | ; Requests CPU to pause for a short period of time.\r | |
| 22 | ;\r | |
| 23 | ; Requests CPU to pause for a short period of time. Typically used in MP\r | |
| 24 | ; systems to prevent memory starvation while waiting for a spin lock.\r | |
| 25 | ;\r | |
| 26 | ;**/\r | |
| 27 | ;VOID\r | |
| 28 | ;EFIAPI\r | |
| 29 | ;CpuPause (\r | |
| 30 | ; VOID\r | |
| 31 | ; );\r | |
| 32 | ;\r | |
| 33 | CpuPause\r | |
| 34 | NOP\r | |
| 35 | NOP\r | |
| 36 | NOP\r | |
| 37 | NOP\r | |
| 38 | NOP\r | |
| 39 | BX LR\r | |
| 40 | \r | |
| 41 | END\r |