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3eb9473e 1/*++\r
2\r
2c7e5c2f
HT
3Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR>\r
4This program and the accompanying materials \r
3eb9473e 5are licensed and made available under the terms and conditions of the BSD License \r
6which accompanies this distribution. The full text of the license may be found at \r
7http://opensource.org/licenses/bsd-license.php \r
8 \r
9THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
10WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
11\r
12\r
13Module Name:\r
14\r
15 CpuBreakpint.c\r
16 \r
17Abstract: \r
18\r
19--*/\r
20\r
c7f33ca4 21#include "BaseLibInternals.h"\r
3eb9473e 22\r
23//void __mfa (void);\r
24\r
25#pragma intrinsic (_enable)\r
26#pragma intrinsic (_disable)\r
27#pragma intrinsic (__break)\r
28#pragma intrinsic (__mfa)\r
29\r
30\r
31/**\r
32 Generates a breakpoint on the CPU.\r
33\r
34 Generates a breakpoint on the CPU. The breakpoint must be implemented such\r
35 that code can resume normal execution after the breakpoint.\r
36\r
37**/\r
38VOID\r
39EFIAPI\r
40CpuBreakpoint (\r
41 VOID\r
42 )\r
43{\r
44 __break (0);\r
45}\r
46\r
47/**\r
48 Used to serialize load and store operations.\r
49\r
50 All loads and stores that proceed calls to this function are guaranteed to be\r
51 globally visible when this function returns.\r
52\r
53**/\r
54VOID\r
55EFIAPI\r
56MemoryFence (\r
57 VOID\r
58 )\r
59{\r
60 __mfa ();\r
61}\r
62\r
63/**\r
64 Disables CPU interrupts.\r
65\r
66 Disables CPU interrupts.\r
67\r
68**/\r
69VOID\r
70EFIAPI\r
71DisableInterrupts (\r
72 VOID\r
73 )\r
74{\r
75 _disable ();\r
76}\r
77\r
78/**\r
79 Enables CPU interrupts.\r
80\r
81 Enables CPU interrupts.\r
82\r
83**/\r
84VOID\r
85EFIAPI\r
86EnableInterrupts (\r
87 VOID\r
88 )\r
89{\r
90 _enable ();\r
91}\r
92\r
93/**\r
94 Enables CPU interrupts for the smallest window required to capture any\r
95 pending interrupts.\r
96\r
97 Enables CPU interrupts for the smallest window required to capture any\r
98 pending interrupts.\r
99\r
100**/\r
101VOID\r
102EFIAPI\r
103EnableDisableInterrupts (\r
104 VOID\r
105 )\r
106{\r
107 EnableInterrupts ();\r
108 DisableInterrupts ();\r
109}\r
110\r
111/**\r
112 Places the CPU in a sleep state until an interrupt is received.\r
113\r
114 Places the CPU in a sleep state until an interrupt is received. If interrupts\r
115 are disabled prior to calling this function, then the CPU will be placed in a\r
116 sleep state indefinitely.\r
117\r
118**/\r
119VOID\r
120EFIAPI\r
121CpuSleep (\r
122 VOID\r
123 )\r
124{\r
125 PalCallStatic (NULL, 29, 0, 0, 0);\r
126}\r