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1 | /** @file\r | |
2 | CPU Exception Hanlder Library common functions.\r | |
3 | \r | |
4 | Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. 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 "CpuExceptionCommon.h"\r | |
16 | \r | |
17 | //\r | |
18 | // Error code flag indicating whether or not an error code will be \r | |
19 | // pushed on the stack if an exception occurs.\r | |
20 | //\r | |
21 | // 1 means an error code will be pushed, otherwise 0\r | |
22 | //\r | |
23 | UINT32 mErrorCodeFlag = 0x00027d00;\r | |
24 | \r | |
25 | //\r | |
26 | // Define the maximum message length \r | |
27 | //\r | |
28 | #define MAX_DEBUG_MESSAGE_LENGTH 0x100\r | |
29 | \r | |
30 | /**\r | |
31 | Prints a message to the serial port.\r | |
32 | \r | |
33 | @param Format Format string for the message to print.\r | |
34 | @param ... Variable argument list whose contents are accessed \r | |
35 | based on the format string specified by Format.\r | |
36 | \r | |
37 | **/\r | |
38 | VOID\r | |
39 | EFIAPI\r | |
40 | InternalPrintMessage (\r | |
41 | IN CONST CHAR8 *Format,\r | |
42 | ...\r | |
43 | )\r | |
44 | {\r | |
45 | CHAR8 Buffer[MAX_DEBUG_MESSAGE_LENGTH];\r | |
46 | VA_LIST Marker;\r | |
47 | \r | |
48 | //\r | |
49 | // Convert the message to an ASCII String\r | |
50 | //\r | |
51 | VA_START (Marker, Format);\r | |
52 | AsciiVSPrint (Buffer, sizeof (Buffer), Format, Marker);\r | |
53 | VA_END (Marker);\r | |
54 | \r | |
55 | //\r | |
56 | // Send the print string to a Serial Port \r | |
57 | //\r | |
58 | SerialPortWrite ((UINT8 *)Buffer, AsciiStrLen (Buffer));\r | |
59 | }\r | |
60 | \r | |
61 | /**\r | |
62 | Find and display image base address and return image base and its entry point.\r | |
63 | \r | |
64 | @return EFI_SUCCESS Image base address.\r | |
65 | @return 0 Image header cannot be found.\r | |
66 | **/\r | |
67 | UINTN \r | |
68 | FindModuleImageBase (\r | |
69 | IN UINTN CurrentEip,\r | |
70 | OUT UINTN *EntryPoint\r | |
71 | )\r | |
72 | {\r | |
73 | UINTN Pe32Data;\r | |
74 | EFI_IMAGE_DOS_HEADER *DosHdr;\r | |
75 | EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r | |
76 | VOID *PdbPointer;\r | |
77 | \r | |
78 | //\r | |
79 | // Find Image Base\r | |
80 | //\r | |
81 | Pe32Data = CurrentEip & ~(mImageAlignSize - 1);\r | |
82 | while (Pe32Data != 0) {\r | |
83 | DosHdr = (EFI_IMAGE_DOS_HEADER *) Pe32Data;\r | |
84 | if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r | |
85 | //\r | |
86 | // DOS image header is present, so read the PE header after the DOS image header.\r | |
87 | //\r | |
88 | Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)(Pe32Data + (UINTN) ((DosHdr->e_lfanew) & 0x0ffff));\r | |
89 | if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {\r | |
90 | //\r | |
91 | // It's PE image.\r | |
92 | //\r | |
93 | InternalPrintMessage ("!!!! Find PE image ");\r | |
94 | *EntryPoint = (UINTN)Pe32Data + (UINTN)(Hdr.Pe32->OptionalHeader.AddressOfEntryPoint & 0x0ffffffff);\r | |
95 | break;\r | |
96 | }\r | |
97 | } else {\r | |
98 | //\r | |
99 | // DOS image header is not present, TE header is at the image base.\r | |
100 | //\r | |
101 | Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;\r | |
102 | if ((Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) &&\r | |
103 | ((Hdr.Te->Machine == IMAGE_FILE_MACHINE_I386) || Hdr.Te->Machine == IMAGE_FILE_MACHINE_X64)) {\r | |
104 | //\r | |
105 | // It's TE image, it TE header and Machine type match\r | |
106 | //\r | |
107 | InternalPrintMessage ("!!!! Find TE image ");\r | |
108 | *EntryPoint = (UINTN)Pe32Data + (UINTN)(Hdr.Te->AddressOfEntryPoint & 0x0ffffffff) + sizeof(EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize;\r | |
109 | break;\r | |
110 | }\r | |
111 | }\r | |
112 | \r | |
113 | //\r | |
114 | // Not found the image base, check the previous aligned address\r | |
115 | // \r | |
116 | Pe32Data -= mImageAlignSize;\r | |
117 | }\r | |
118 | \r | |
119 | if (Pe32Data != 0) {\r | |
120 | PdbPointer = PeCoffLoaderGetPdbPointer ((VOID *) Pe32Data);\r | |
121 | if (PdbPointer != NULL) {\r | |
122 | InternalPrintMessage ("%a", PdbPointer);\r | |
123 | } else {\r | |
124 | InternalPrintMessage ("(No PDB) " );\r | |
125 | }\r | |
126 | } else {\r | |
127 | InternalPrintMessage ("!!!! Can't find image information. !!!!\n");\r | |
128 | }\r | |
129 | \r | |
130 | return Pe32Data;\r | |
131 | }\r | |
132 | \r |