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8f07f895 | 1 | /** @file\r |
2 | CPU Exception Library provides DXE/SMM CPU exception handler.\r | |
3 | \r | |
4 | Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials are licensed and made available under\r | |
6 | the terms and conditions of the BSD License that accompanies this distribution.\r | |
7 | The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php.\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include <PiDxe.h>\r | |
16 | \r | |
17 | #include "CpuExceptionCommon.h"\r | |
18 | #include <Library/SynchronizationLib.h>\r | |
19 | \r | |
20 | //\r | |
21 | // Spinlock for CPU information display\r | |
22 | //\r | |
23 | SPIN_LOCK mDisplayMessageSpinLock;\r | |
24 | \r | |
25 | //\r | |
26 | // Image align size for DXE/SMM\r | |
27 | //\r | |
28 | CONST UINTN mImageAlignSize = SIZE_4KB;\r | |
29 | \r | |
30 | /**\r | |
31 | Common exception handler.\r | |
32 | \r | |
33 | @param ExceptionType Exception type.\r | |
34 | @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r | |
35 | **/\r | |
36 | VOID\r | |
37 | EFIAPI\r | |
38 | CommonExceptionHandler (\r | |
39 | IN EFI_EXCEPTION_TYPE ExceptionType, \r | |
40 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
41 | )\r | |
42 | {\r | |
43 | //\r | |
44 | // Get Spinlock to display CPU information\r | |
45 | //\r | |
46 | while (!AcquireSpinLockOrFail (&mDisplayMessageSpinLock)) {\r | |
47 | CpuPause ();\r | |
48 | }\r | |
49 | \r | |
50 | //\r | |
51 | // Display ExceptionType, CPU information and Image information\r | |
52 | //\r | |
53 | DumpCpuContent (ExceptionType, SystemContext);\r | |
54 | \r | |
55 | //\r | |
56 | // Release Spinlock\r | |
57 | //\r | |
58 | ReleaseSpinLock (&mDisplayMessageSpinLock);\r | |
59 | \r | |
60 | //\r | |
61 | // Enter a dead loop.\r | |
62 | //\r | |
63 | CpuDeadLoop ();\r | |
64 | }\r | |
65 | \r | |
66 | /**\r | |
67 | Setup CPU exception handlers.\r | |
68 | \r | |
69 | This API will setups the CPU exception handler to display CPU contents and run into\r | |
70 | CpuDeadLoop(). \r | |
a9c7ab95 | 71 | Note: Before invoking this API, caller must allocate memory for IDT table and load \r |
72 | IDTR by AsmWriteIdtr().\r | |
8f07f895 | 73 | \r |
74 | **/\r | |
75 | VOID\r | |
76 | EFIAPI\r | |
77 | SetupCpuExceptionHandlers (\r | |
78 | IN VOID\r | |
79 | )\r | |
80 | {\r | |
81 | InitializeSpinLock (&mDisplayMessageSpinLock);\r | |
82 | InternalSetupCpuExceptionHandlers ();\r | |
83 | }\r | |
84 | \r |