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8f07f895 | 1 | /** @file\r |
2 | IA32 CPU Exception Hanlder functons.\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 | Internal function to setup CPU exception handlers.\r | |
19 | \r | |
20 | **/\r | |
21 | VOID\r | |
22 | InternalSetupCpuExceptionHandlers (\r | |
23 | VOID\r | |
24 | )\r | |
25 | {\r | |
26 | IA32_DESCRIPTOR IdtDescriptor;\r | |
27 | UINTN IdtSize;\r | |
28 | EXCEPTION_HANDLER_TEMPLATE_MAP TemplateMap;\r | |
29 | UINT16 CodeSegment;\r | |
30 | IA32_IDT_GATE_DESCRIPTOR *IdtEntry;\r | |
31 | UINTN Index;\r | |
32 | UINTN InterruptHandler;;\r | |
33 | \r | |
34 | //\r | |
35 | // Read IDT descriptor and calculate IDT size\r | |
36 | //\r | |
37 | AsmReadIdtr (&IdtDescriptor);\r | |
38 | IdtSize = (IdtDescriptor.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR);\r | |
39 | if (IdtSize > CPU_EXCEPTION_NUM) {\r | |
40 | //\r | |
41 | // CPU exeption library only setup CPU_EXCEPTION_NUM exception handler at most\r | |
42 | //\r | |
43 | IdtSize = CPU_EXCEPTION_NUM;\r | |
44 | }\r | |
45 | \r | |
46 | //\r | |
47 | // Use current CS as the segment selector of interrupt gate in IDT\r | |
48 | //\r | |
49 | CodeSegment = AsmReadCs ();\r | |
50 | IdtEntry = (IA32_IDT_GATE_DESCRIPTOR *) IdtDescriptor.Base;\r | |
51 | \r | |
52 | GetTemplateAddressMap (&TemplateMap);\r | |
53 | \r | |
54 | for (Index = 0; Index < IdtSize; Index ++) {\r | |
55 | InterruptHandler = TemplateMap.ExceptionStart + Index * TemplateMap.ExceptionStubHeaderSize;\r | |
56 | IdtEntry[Index].Bits.OffsetLow = (UINT16)(UINTN)InterruptHandler;\r | |
57 | IdtEntry[Index].Bits.OffsetHigh = (UINT16)((UINTN)InterruptHandler >> 16);\r | |
58 | IdtEntry[Index].Bits.Selector = CodeSegment;\r | |
59 | IdtEntry[Index].Bits.GateType = IA32_IDT_GATE_TYPE_INTERRUPT_32;\r | |
60 | }\r | |
61 | }\r | |
62 | \r | |
63 | /**\r | |
64 | Dump CPU content information.\r | |
65 | \r | |
66 | @param ExceptionType Exception type.\r | |
67 | @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r | |
68 | **/\r | |
69 | VOID\r | |
70 | DumpCpuContent (\r | |
71 | IN UINTN ExceptionType,\r | |
72 | IN EFI_SYSTEM_CONTEXT SystemContext\r | |
73 | )\r | |
74 | {\r | |
75 | UINTN ImageBase;\r | |
76 | UINTN EntryPoint;\r | |
77 | \r | |
78 | InternalPrintMessage (\r | |
79 | "!!!! IA32 Exception Type - %08x CPU Apic ID - %08x !!!!\n",\r | |
80 | ExceptionType,\r | |
81 | GetApicId ()\r | |
82 | );\r | |
83 | InternalPrintMessage (\r | |
84 | "EIP - %08x, CS - %08x, EFLAGS - %08x\n",\r | |
85 | SystemContext.SystemContextIa32->Eip,\r | |
86 | SystemContext.SystemContextIa32->Cs,\r | |
87 | SystemContext.SystemContextIa32->Eflags\r | |
88 | );\r | |
89 | if ((mErrorCodeFlag & (1 << ExceptionType)) != 0) {\r | |
90 | InternalPrintMessage (\r | |
91 | "ExceptionData - %08x\n",\r | |
92 | SystemContext.SystemContextIa32->ExceptionData\r | |
93 | );\r | |
94 | }\r | |
95 | InternalPrintMessage (\r | |
96 | "EAX - %08x, ECX - %08x, EDX - %08x, EBX - %08x\n",\r | |
97 | SystemContext.SystemContextIa32->Eax,\r | |
98 | SystemContext.SystemContextIa32->Ecx,\r | |
99 | SystemContext.SystemContextIa32->Edx,\r | |
100 | SystemContext.SystemContextIa32->Ebx\r | |
101 | );\r | |
102 | InternalPrintMessage (\r | |
103 | "ESP - %08x, EBP - %08x, ESI - %08x, EDI - %08x\n",\r | |
104 | SystemContext.SystemContextIa32->Esp,\r | |
105 | SystemContext.SystemContextIa32->Ebp,\r | |
106 | SystemContext.SystemContextIa32->Esi,\r | |
107 | SystemContext.SystemContextIa32->Edi\r | |
108 | );\r | |
109 | InternalPrintMessage (\r | |
110 | "DS - %08x, ES - %08x, FS - %08x, GS - %08x, SS - %08x\n",\r | |
111 | SystemContext.SystemContextIa32->Ds,\r | |
112 | SystemContext.SystemContextIa32->Es,\r | |
113 | SystemContext.SystemContextIa32->Fs,\r | |
114 | SystemContext.SystemContextIa32->Gs,\r | |
115 | SystemContext.SystemContextIa32->Ss\r | |
116 | );\r | |
117 | InternalPrintMessage (\r | |
118 | "CR0 - %08x, CR2 - %08x, CR3 - %08x, CR4 - %08x\n",\r | |
119 | SystemContext.SystemContextIa32->Cr0,\r | |
120 | SystemContext.SystemContextIa32->Cr2,\r | |
121 | SystemContext.SystemContextIa32->Cr3,\r | |
122 | SystemContext.SystemContextIa32->Cr4\r | |
123 | );\r | |
124 | InternalPrintMessage (\r | |
125 | "DR0 - %08x, DR1 - %08x, DR2 - %08x, DR3 - %08x\n",\r | |
126 | SystemContext.SystemContextIa32->Dr0,\r | |
127 | SystemContext.SystemContextIa32->Dr1,\r | |
128 | SystemContext.SystemContextIa32->Dr2,\r | |
129 | SystemContext.SystemContextIa32->Dr3\r | |
130 | );\r | |
131 | InternalPrintMessage (\r | |
132 | "DR6 - %08x, DR7 - %08x\n",\r | |
133 | SystemContext.SystemContextIa32->Dr6,\r | |
134 | SystemContext.SystemContextIa32->Dr7\r | |
135 | );\r | |
136 | InternalPrintMessage (\r | |
137 | "GDTR - %08x %08x, IDTR - %08x %08x\n",\r | |
138 | SystemContext.SystemContextIa32->Gdtr[0],\r | |
139 | SystemContext.SystemContextIa32->Gdtr[1],\r | |
140 | SystemContext.SystemContextIa32->Idtr[0],\r | |
141 | SystemContext.SystemContextIa32->Idtr[1]\r | |
142 | );\r | |
143 | InternalPrintMessage (\r | |
144 | "LDTR - %08x, TR - %08x\n",\r | |
145 | SystemContext.SystemContextIa32->Ldtr,\r | |
146 | SystemContext.SystemContextIa32->Tr\r | |
147 | );\r | |
148 | InternalPrintMessage (\r | |
149 | "FXSAVE_STATE - %08x\n",\r | |
150 | &SystemContext.SystemContextIa32->FxSaveState\r | |
151 | );\r | |
152 | \r | |
153 | //\r | |
154 | // Find module image base and module entry point by RIP\r | |
155 | //\r | |
156 | ImageBase = FindModuleImageBase (SystemContext.SystemContextIa32->Eip, &EntryPoint);\r | |
157 | if (ImageBase != 0) {\r | |
158 | InternalPrintMessage (\r | |
159 | " (ImageBase=%08x, EntryPoint=%08x) !!!!\n",\r | |
160 | ImageBase,\r | |
161 | EntryPoint\r | |
162 | );\r | |
163 | }\r | |
164 | }\r |