1 /** @file 2 Base Library CPU functions for Itanium 3 4 Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php. 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 16 #include "BaseLibInternals.h" 17 18 /** 19 Generates a breakpoint on the CPU. 20 21 Generates a breakpoint on the CPU. The breakpoint must be implemented such 22 that code can resume normal execution after the breakpoint. 23 24 **/ 25 VOID 26 EFIAPI 27 CpuBreakpoint ( 28 VOID 29 ) 30 { 31 __break (0); 32 } 33 34 /** 35 Used to serialize load and store operations. 36 37 All loads and stores that proceed calls to this function are guaranteed to be 38 globally visible when this function returns. 39 40 **/ 41 VOID 42 EFIAPI 43 MemoryFence ( 44 VOID 45 ) 46 { 47 __mfa (); 48 } 49 50 /** 51 Disables CPU interrupts. 52 53 Disables CPU interrupts. 54 55 **/ 56 VOID 57 EFIAPI 58 DisableInterrupts ( 59 VOID 60 ) 61 { 62 _disable (); 63 } 64 65 /** 66 Enables CPU interrupts. 67 68 Enables CPU interrupts. 69 70 **/ 71 VOID 72 EFIAPI 73 EnableInterrupts ( 74 VOID 75 ) 76 { 77 _enable (); 78 } 79 80 /** 81 Enables CPU interrupts for the smallest window required to capture any 82 pending interrupts. 83 84 Enables CPU interrupts for the smallest window required to capture any 85 pending interrupts. 86 87 **/ 88 VOID 89 EFIAPI 90 EnableDisableInterrupts ( 91 VOID 92 ) 93 { 94 EnableInterrupts (); 95 DisableInterrupts (); 96 } 97
