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8f07f895 | 1 | /** @file\r |
e3644786 | 2 | IA32 CPU Exception Handler functons.\r |
8f07f895 | 3 | \r |
a51ee144 | 4 | Copyright (c) 2012 - 2015, Intel Corporation. All rights reserved.<BR>\r |
8f07f895 | 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 | |
e41aad15 JF |
18 | Return address map of exception handler template so that C code can generate\r |
19 | exception tables.\r | |
20 | \r | |
21 | @param IdtEntry Pointer to IDT entry to be updated.\r | |
22 | @param InterruptHandler IDT handler value.\r | |
8f07f895 | 23 | \r |
24 | **/\r | |
25 | VOID\r | |
e41aad15 JF |
26 | ArchUpdateIdtEntry (\r |
27 | IN IA32_IDT_GATE_DESCRIPTOR *IdtEntry,\r | |
28 | IN UINTN InterruptHandler\r | |
29 | )\r | |
30 | {\r | |
31 | IdtEntry->Bits.OffsetLow = (UINT16)(UINTN)InterruptHandler;\r | |
32 | IdtEntry->Bits.OffsetHigh = (UINT16)((UINTN)InterruptHandler >> 16);\r | |
33 | IdtEntry->Bits.GateType = IA32_IDT_GATE_TYPE_INTERRUPT_32;\r | |
34 | }\r | |
35 | \r | |
36 | /**\r | |
37 | Read IDT handler value from IDT entry.\r | |
38 | \r | |
39 | @param IdtEntry Pointer to IDT entry to be read.\r | |
40 | \r | |
41 | **/\r | |
42 | UINTN\r | |
43 | ArchGetIdtHandler (\r | |
44 | IN IA32_IDT_GATE_DESCRIPTOR *IdtEntry\r | |
8f07f895 | 45 | )\r |
46 | {\r | |
e41aad15 JF |
47 | return (UINTN)IdtEntry->Bits.OffsetLow + (((UINTN)IdtEntry->Bits.OffsetHigh) << 16);\r |
48 | }\r | |
49 | \r | |
50 | /**\r | |
51 | Save CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.\r | |
8f07f895 | 52 | \r |
e41aad15 JF |
53 | @param ExceptionType Exception type.\r |
54 | @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r | |
55 | \r | |
56 | **/\r | |
57 | VOID\r | |
58 | ArchSaveExceptionContext (\r | |
59 | IN UINTN ExceptionType,\r | |
60 | IN EFI_SYSTEM_CONTEXT SystemContext \r | |
61 | )\r | |
62 | {\r | |
63 | IA32_EFLAGS32 Eflags;\r | |
8f07f895 | 64 | //\r |
e41aad15 | 65 | // Save Exception context in global variable\r |
8f07f895 | 66 | //\r |
e41aad15 JF |
67 | mReservedVectors[ExceptionType].OldFlags = SystemContext.SystemContextIa32->Eflags;\r |
68 | mReservedVectors[ExceptionType].OldCs = SystemContext.SystemContextIa32->Cs;\r | |
69 | mReservedVectors[ExceptionType].OldIp = SystemContext.SystemContextIa32->Eip;\r | |
70 | mReservedVectors[ExceptionType].ExceptionData = SystemContext.SystemContextIa32->ExceptionData;\r | |
71 | //\r | |
72 | // Clear IF flag to avoid old IDT handler enable interrupt by IRET\r | |
8f07f895 | 73 | //\r |
e41aad15 JF |
74 | Eflags.UintN = SystemContext.SystemContextIa32->Eflags;\r |
75 | Eflags.Bits.IF = 0; \r | |
76 | SystemContext.SystemContextIa32->Eflags = Eflags.UintN;\r | |
8f07f895 | 77 | //\r |
e41aad15 JF |
78 | // Modify the EIP in stack, then old IDT handler will return to the stub code\r |
79 | //\r | |
80 | SystemContext.SystemContextIa32->Eip = (UINTN) mReservedVectors[ExceptionType].HookAfterStubHeaderCode;\r | |
81 | }\r | |
8f07f895 | 82 | \r |
e41aad15 JF |
83 | /**\r |
84 | Restore CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.\r | |
8f07f895 | 85 | \r |
e41aad15 JF |
86 | @param ExceptionType Exception type.\r |
87 | @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r | |
88 | **/\r | |
89 | VOID\r | |
90 | ArchRestoreExceptionContext (\r | |
91 | IN UINTN ExceptionType,\r | |
92 | IN EFI_SYSTEM_CONTEXT SystemContext \r | |
93 | )\r | |
94 | {\r | |
95 | SystemContext.SystemContextIa32->Eflags = mReservedVectors[ExceptionType].OldFlags;\r | |
96 | SystemContext.SystemContextIa32->Cs = mReservedVectors[ExceptionType].OldCs;\r | |
97 | SystemContext.SystemContextIa32->Eip = mReservedVectors[ExceptionType].OldIp;\r | |
98 | SystemContext.SystemContextIa32->ExceptionData = mReservedVectors[ExceptionType].ExceptionData;\r | |
8f07f895 | 99 | }\r |
100 | \r | |
101 | /**\r | |
3f25e6ea | 102 | Display CPU information.\r |
8f07f895 | 103 | \r |
104 | @param ExceptionType Exception type.\r | |
105 | @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r | |
106 | **/\r | |
107 | VOID\r | |
108 | DumpCpuContent (\r | |
e41aad15 | 109 | IN EFI_EXCEPTION_TYPE ExceptionType,\r |
8f07f895 | 110 | IN EFI_SYSTEM_CONTEXT SystemContext\r |
111 | )\r | |
112 | {\r | |
113 | UINTN ImageBase;\r | |
114 | UINTN EntryPoint;\r | |
115 | \r | |
116 | InternalPrintMessage (\r | |
a51ee144 | 117 | "!!!! IA32 Exception Type - %02x(%a) CPU Apic ID - %08x !!!!\n",\r |
8f07f895 | 118 | ExceptionType,\r |
a51ee144 | 119 | GetExceptionNameStr (ExceptionType),\r |
8f07f895 | 120 | GetApicId ()\r |
121 | );\r | |
a51ee144 | 122 | \r |
8f07f895 | 123 | InternalPrintMessage (\r |
124 | "EIP - %08x, CS - %08x, EFLAGS - %08x\n",\r | |
125 | SystemContext.SystemContextIa32->Eip,\r | |
126 | SystemContext.SystemContextIa32->Cs,\r | |
127 | SystemContext.SystemContextIa32->Eflags\r | |
128 | );\r | |
129 | if ((mErrorCodeFlag & (1 << ExceptionType)) != 0) {\r | |
130 | InternalPrintMessage (\r | |
131 | "ExceptionData - %08x\n",\r | |
132 | SystemContext.SystemContextIa32->ExceptionData\r | |
133 | );\r | |
134 | }\r | |
135 | InternalPrintMessage (\r | |
136 | "EAX - %08x, ECX - %08x, EDX - %08x, EBX - %08x\n",\r | |
137 | SystemContext.SystemContextIa32->Eax,\r | |
138 | SystemContext.SystemContextIa32->Ecx,\r | |
139 | SystemContext.SystemContextIa32->Edx,\r | |
140 | SystemContext.SystemContextIa32->Ebx\r | |
141 | );\r | |
142 | InternalPrintMessage (\r | |
143 | "ESP - %08x, EBP - %08x, ESI - %08x, EDI - %08x\n",\r | |
144 | SystemContext.SystemContextIa32->Esp,\r | |
145 | SystemContext.SystemContextIa32->Ebp,\r | |
146 | SystemContext.SystemContextIa32->Esi,\r | |
147 | SystemContext.SystemContextIa32->Edi\r | |
148 | );\r | |
149 | InternalPrintMessage (\r | |
150 | "DS - %08x, ES - %08x, FS - %08x, GS - %08x, SS - %08x\n",\r | |
151 | SystemContext.SystemContextIa32->Ds,\r | |
152 | SystemContext.SystemContextIa32->Es,\r | |
153 | SystemContext.SystemContextIa32->Fs,\r | |
154 | SystemContext.SystemContextIa32->Gs,\r | |
155 | SystemContext.SystemContextIa32->Ss\r | |
156 | );\r | |
157 | InternalPrintMessage (\r | |
158 | "CR0 - %08x, CR2 - %08x, CR3 - %08x, CR4 - %08x\n",\r | |
159 | SystemContext.SystemContextIa32->Cr0,\r | |
160 | SystemContext.SystemContextIa32->Cr2,\r | |
161 | SystemContext.SystemContextIa32->Cr3,\r | |
162 | SystemContext.SystemContextIa32->Cr4\r | |
163 | );\r | |
164 | InternalPrintMessage (\r | |
165 | "DR0 - %08x, DR1 - %08x, DR2 - %08x, DR3 - %08x\n",\r | |
166 | SystemContext.SystemContextIa32->Dr0,\r | |
167 | SystemContext.SystemContextIa32->Dr1,\r | |
168 | SystemContext.SystemContextIa32->Dr2,\r | |
169 | SystemContext.SystemContextIa32->Dr3\r | |
170 | );\r | |
171 | InternalPrintMessage (\r | |
172 | "DR6 - %08x, DR7 - %08x\n",\r | |
173 | SystemContext.SystemContextIa32->Dr6,\r | |
174 | SystemContext.SystemContextIa32->Dr7\r | |
175 | );\r | |
176 | InternalPrintMessage (\r | |
177 | "GDTR - %08x %08x, IDTR - %08x %08x\n",\r | |
178 | SystemContext.SystemContextIa32->Gdtr[0],\r | |
179 | SystemContext.SystemContextIa32->Gdtr[1],\r | |
180 | SystemContext.SystemContextIa32->Idtr[0],\r | |
181 | SystemContext.SystemContextIa32->Idtr[1]\r | |
182 | );\r | |
183 | InternalPrintMessage (\r | |
184 | "LDTR - %08x, TR - %08x\n",\r | |
185 | SystemContext.SystemContextIa32->Ldtr,\r | |
186 | SystemContext.SystemContextIa32->Tr\r | |
187 | );\r | |
188 | InternalPrintMessage (\r | |
189 | "FXSAVE_STATE - %08x\n",\r | |
190 | &SystemContext.SystemContextIa32->FxSaveState\r | |
191 | );\r | |
192 | \r | |
193 | //\r | |
194 | // Find module image base and module entry point by RIP\r | |
195 | //\r | |
196 | ImageBase = FindModuleImageBase (SystemContext.SystemContextIa32->Eip, &EntryPoint);\r | |
197 | if (ImageBase != 0) {\r | |
198 | InternalPrintMessage (\r | |
199 | " (ImageBase=%08x, EntryPoint=%08x) !!!!\n",\r | |
200 | ImageBase,\r | |
201 | EntryPoint\r | |
202 | );\r | |
203 | }\r | |
204 | }\r |