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8f07f895 | 1 | /** @file\r |
e3644786 | 2 | x64 CPU Exception Handler.\r |
8f07f895 | 3 | \r |
81b21fc2 | 4 | Copyright (c) 2012 - 2016, 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 | |
8f07f895 | 20 | \r |
e41aad15 JF |
21 | @param IdtEntry Pointer to IDT entry to be updated.\r |
22 | @param InterruptHandler IDT handler value.\r | |
8f07f895 | 23 | **/\r |
24 | VOID\r | |
e41aad15 JF |
25 | ArchUpdateIdtEntry (\r |
26 | IN IA32_IDT_GATE_DESCRIPTOR *IdtEntry,\r | |
27 | IN UINTN InterruptHandler\r | |
8f07f895 | 28 | )\r |
29 | {\r | |
e41aad15 JF |
30 | IdtEntry->Bits.OffsetLow = (UINT16)(UINTN)InterruptHandler;\r |
31 | IdtEntry->Bits.OffsetHigh = (UINT16)((UINTN)InterruptHandler >> 16);\r | |
32 | IdtEntry->Bits.OffsetUpper = (UINT32)((UINTN)InterruptHandler >> 32); \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 | |
45 | )\r | |
46 | {\r | |
47 | return IdtEntry->Bits.OffsetLow + (((UINTN) IdtEntry->Bits.OffsetHigh) << 16) +\r | |
48 | (((UINTN) IdtEntry->Bits.OffsetUpper) << 32);\r | |
49 | }\r | |
8f07f895 | 50 | \r |
e41aad15 JF |
51 | /**\r |
52 | Save CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.\r | |
53 | \r | |
81b21fc2 JF |
54 | @param[in] ExceptionType Exception type.\r |
55 | @param[in] SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r | |
56 | @param[in] ExceptionHandlerData Pointer to exception handler data.\r | |
e41aad15 JF |
57 | **/\r |
58 | VOID\r | |
59 | ArchSaveExceptionContext (\r | |
81b21fc2 JF |
60 | IN UINTN ExceptionType,\r |
61 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
62 | IN EXCEPTION_HANDLER_DATA *ExceptionHandlerData\r | |
e41aad15 JF |
63 | )\r |
64 | {\r | |
65 | IA32_EFLAGS32 Eflags;\r | |
81b21fc2 JF |
66 | RESERVED_VECTORS_DATA *ReservedVectors;\r |
67 | \r | |
68 | ReservedVectors = ExceptionHandlerData->ReservedVectors;\r | |
8f07f895 | 69 | //\r |
e41aad15 | 70 | // Save Exception context in global variable\r |
8f07f895 | 71 | //\r |
81b21fc2 JF |
72 | ReservedVectors[ExceptionType].OldSs = SystemContext.SystemContextX64->Ss;\r |
73 | ReservedVectors[ExceptionType].OldSp = SystemContext.SystemContextX64->Rsp;\r | |
74 | ReservedVectors[ExceptionType].OldFlags = SystemContext.SystemContextX64->Rflags;\r | |
75 | ReservedVectors[ExceptionType].OldCs = SystemContext.SystemContextX64->Cs;\r | |
76 | ReservedVectors[ExceptionType].OldIp = SystemContext.SystemContextX64->Rip;\r | |
77 | ReservedVectors[ExceptionType].ExceptionData = SystemContext.SystemContextX64->ExceptionData;\r | |
8f07f895 | 78 | //\r |
e41aad15 | 79 | // Clear IF flag to avoid old IDT handler enable interrupt by IRET\r |
8f07f895 | 80 | //\r |
e41aad15 JF |
81 | Eflags.UintN = SystemContext.SystemContextX64->Rflags;\r |
82 | Eflags.Bits.IF = 0; \r | |
83 | SystemContext.SystemContextX64->Rflags = Eflags.UintN;\r | |
84 | //\r | |
85 | // Modify the EIP in stack, then old IDT handler will return to the stub code\r | |
86 | //\r | |
81b21fc2 | 87 | SystemContext.SystemContextX64->Rip = (UINTN) ReservedVectors[ExceptionType].HookAfterStubHeaderCode;\r |
8f07f895 | 88 | }\r |
89 | \r | |
90 | /**\r | |
e41aad15 | 91 | Restore CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.\r |
8f07f895 | 92 | \r |
368c54e7 JF |
93 | @param[in] ExceptionType Exception type.\r |
94 | @param[in] SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r | |
95 | @param[in] ExceptionHandlerData Pointer to exception handler data.\r | |
8f07f895 | 96 | **/\r |
97 | VOID\r | |
e41aad15 | 98 | ArchRestoreExceptionContext (\r |
368c54e7 JF |
99 | IN UINTN ExceptionType,\r |
100 | IN EFI_SYSTEM_CONTEXT SystemContext,\r | |
101 | IN EXCEPTION_HANDLER_DATA *ExceptionHandlerData\r | |
e41aad15 JF |
102 | )\r |
103 | {\r | |
368c54e7 JF |
104 | RESERVED_VECTORS_DATA *ReservedVectors;\r |
105 | \r | |
106 | ReservedVectors = ExceptionHandlerData->ReservedVectors;\r | |
107 | SystemContext.SystemContextX64->Ss = ReservedVectors[ExceptionType].OldSs;\r | |
108 | SystemContext.SystemContextX64->Rsp = ReservedVectors[ExceptionType].OldSp;\r | |
109 | SystemContext.SystemContextX64->Rflags = ReservedVectors[ExceptionType].OldFlags;\r | |
110 | SystemContext.SystemContextX64->Cs = ReservedVectors[ExceptionType].OldCs;\r | |
111 | SystemContext.SystemContextX64->Rip = ReservedVectors[ExceptionType].OldIp;\r | |
112 | SystemContext.SystemContextX64->ExceptionData = ReservedVectors[ExceptionType].ExceptionData;\r | |
e41aad15 JF |
113 | }\r |
114 | \r | |
115 | /**\r | |
3f25e6ea | 116 | Display CPU information.\r |
e41aad15 JF |
117 | \r |
118 | @param ExceptionType Exception type.\r | |
119 | @param SystemContext Pointer to EFI_SYSTEM_CONTEXT.\r | |
120 | **/\r | |
121 | VOID\r | |
122 | DumpCpuContent (\r | |
123 | IN EFI_EXCEPTION_TYPE ExceptionType,\r | |
8f07f895 | 124 | IN EFI_SYSTEM_CONTEXT SystemContext\r |
125 | )\r | |
126 | {\r | |
127 | UINTN ImageBase;\r | |
128 | UINTN EntryPoint;\r | |
129 | \r | |
130 | InternalPrintMessage (\r | |
a51ee144 | 131 | "!!!! X64 Exception Type - %02x(%a) CPU Apic ID - %08x !!!!\n",\r |
8f07f895 | 132 | ExceptionType,\r |
a51ee144 | 133 | GetExceptionNameStr (ExceptionType),\r |
8f07f895 | 134 | GetApicId ()\r |
135 | );\r | |
a51ee144 | 136 | \r |
8f07f895 | 137 | InternalPrintMessage (\r |
138 | "RIP - %016lx, CS - %016lx, RFLAGS - %016lx\n",\r | |
139 | SystemContext.SystemContextX64->Rip,\r | |
140 | SystemContext.SystemContextX64->Cs,\r | |
141 | SystemContext.SystemContextX64->Rflags\r | |
142 | );\r | |
143 | if (mErrorCodeFlag & (1 << ExceptionType)) {\r | |
144 | InternalPrintMessage (\r | |
145 | "ExceptionData - %016lx\n",\r | |
146 | SystemContext.SystemContextX64->ExceptionData\r | |
147 | );\r | |
148 | }\r | |
149 | InternalPrintMessage (\r | |
150 | "RAX - %016lx, RCX - %016lx, RDX - %016lx\n",\r | |
151 | SystemContext.SystemContextX64->Rax,\r | |
152 | SystemContext.SystemContextX64->Rcx,\r | |
153 | SystemContext.SystemContextX64->Rdx\r | |
154 | );\r | |
155 | InternalPrintMessage (\r | |
156 | "RBX - %016lx, RSP - %016lx, RBP - %016lx\n",\r | |
157 | SystemContext.SystemContextX64->Rbx,\r | |
158 | SystemContext.SystemContextX64->Rsp,\r | |
159 | SystemContext.SystemContextX64->Rbp\r | |
160 | );\r | |
161 | InternalPrintMessage (\r | |
162 | "RSI - %016lx, RDI - %016lx\n",\r | |
163 | SystemContext.SystemContextX64->Rsi,\r | |
164 | SystemContext.SystemContextX64->Rdi\r | |
165 | );\r | |
166 | InternalPrintMessage (\r | |
167 | "R8 - %016lx, R9 - %016lx, R10 - %016lx\n",\r | |
168 | SystemContext.SystemContextX64->R8,\r | |
169 | SystemContext.SystemContextX64->R9,\r | |
170 | SystemContext.SystemContextX64->R10\r | |
171 | );\r | |
172 | InternalPrintMessage (\r | |
173 | "R11 - %016lx, R12 - %016lx, R13 - %016lx\n",\r | |
174 | SystemContext.SystemContextX64->R11,\r | |
175 | SystemContext.SystemContextX64->R12,\r | |
176 | SystemContext.SystemContextX64->R13\r | |
177 | );\r | |
178 | InternalPrintMessage (\r | |
179 | "R14 - %016lx, R15 - %016lx\n",\r | |
180 | SystemContext.SystemContextX64->R14,\r | |
181 | SystemContext.SystemContextX64->R15\r | |
182 | );\r | |
183 | InternalPrintMessage (\r | |
184 | "DS - %016lx, ES - %016lx, FS - %016lx\n",\r | |
185 | SystemContext.SystemContextX64->Ds,\r | |
186 | SystemContext.SystemContextX64->Es,\r | |
187 | SystemContext.SystemContextX64->Fs\r | |
188 | );\r | |
189 | InternalPrintMessage (\r | |
190 | "GS - %016lx, SS - %016lx\n",\r | |
191 | SystemContext.SystemContextX64->Gs,\r | |
192 | SystemContext.SystemContextX64->Ss\r | |
193 | );\r | |
194 | InternalPrintMessage (\r | |
195 | "CR0 - %016lx, CR2 - %016lx, CR3 - %016lx\n",\r | |
196 | SystemContext.SystemContextX64->Cr0,\r | |
197 | SystemContext.SystemContextX64->Cr2,\r | |
198 | SystemContext.SystemContextX64->Cr3\r | |
199 | );\r | |
200 | InternalPrintMessage (\r | |
201 | "CR4 - %016lx, CR8 - %016lx\n",\r | |
202 | SystemContext.SystemContextX64->Cr4,\r | |
203 | SystemContext.SystemContextX64->Cr8\r | |
204 | );\r | |
205 | InternalPrintMessage (\r | |
206 | "DR0 - %016lx, DR1 - %016lx, DR2 - %016lx\n",\r | |
207 | SystemContext.SystemContextX64->Dr0,\r | |
208 | SystemContext.SystemContextX64->Dr1,\r | |
209 | SystemContext.SystemContextX64->Dr2\r | |
210 | );\r | |
211 | InternalPrintMessage (\r | |
212 | "DR3 - %016lx, DR6 - %016lx, DR7 - %016lx\n",\r | |
213 | SystemContext.SystemContextX64->Dr3,\r | |
214 | SystemContext.SystemContextX64->Dr6,\r | |
215 | SystemContext.SystemContextX64->Dr7\r | |
216 | );\r | |
217 | InternalPrintMessage (\r | |
218 | "GDTR - %016lx %016lx, LDTR - %016lx\n",\r | |
219 | SystemContext.SystemContextX64->Gdtr[0],\r | |
220 | SystemContext.SystemContextX64->Gdtr[1],\r | |
221 | SystemContext.SystemContextX64->Ldtr\r | |
222 | );\r | |
223 | InternalPrintMessage (\r | |
224 | "IDTR - %016lx %016lx, TR - %016lx\n",\r | |
225 | SystemContext.SystemContextX64->Idtr[0],\r | |
226 | SystemContext.SystemContextX64->Idtr[1],\r | |
227 | SystemContext.SystemContextX64->Tr\r | |
228 | );\r | |
229 | InternalPrintMessage (\r | |
230 | "FXSAVE_STATE - %016lx\n",\r | |
231 | &SystemContext.SystemContextX64->FxSaveState\r | |
232 | );\r | |
233 | \r | |
234 | //\r | |
235 | // Find module image base and module entry point by RIP\r | |
236 | //\r | |
237 | ImageBase = FindModuleImageBase (SystemContext.SystemContextX64->Rip, &EntryPoint);\r | |
238 | if (ImageBase != 0) {\r | |
239 | InternalPrintMessage (\r | |
240 | " (ImageBase=%016lx, EntryPoint=%016lx) !!!!\n",\r | |
241 | ImageBase,\r | |
242 | EntryPoint\r | |
243 | );\r | |
244 | }\r | |
245 | }\r |