1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
/** @file
Common header file for CPU Exception Handler Library.
Copyright (c) 2012 - 2013, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _CPU_EXCEPTION_COMMON_H_
#define _CPU_EXCEPTION_COMMON_H_
#include <Ppi/VectorHandoffInfo.h>
#include <Protocol/Cpu.h>
#include <Library/BaseLib.h>
#include <Library/SerialPortLib.h>
#include <Library/PrintLib.h>
#include <Library/LocalApicLib.h>
#include <Library/PeCoffGetEntryPointLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/SynchronizationLib.h>
#define CPU_EXCEPTION_NUM 32
#define CPU_INTERRUPT_NUM 256
#define HOOKAFTER_STUB_SIZE 16
#include "ArchInterruptDefs.h"
//
// Record exception handler information
//
typedef struct {
UINTN ExceptionStart;
UINTN ExceptionStubHeaderSize;
UINTN HookAfterStubHeaderStart;
} EXCEPTION_HANDLER_TEMPLATE_MAP;
extern CONST UINT32 mErrorCodeFlag;
extern CONST UINTN mImageAlignSize;
extern CONST UINTN mDoFarReturnFlag;
extern RESERVED_VECTORS_DATA *mReservedVectors;
/**
Return address map of exception handler template so that C code can generate
exception tables.
@param AddressMap Pointer to a buffer where the address map is returned.
**/
VOID
EFIAPI
AsmGetTemplateAddressMap (
OUT EXCEPTION_HANDLER_TEMPLATE_MAP *AddressMap
);
/**
Return address map of exception handler template so that C code can generate
exception tables.
@param IdtEntry Pointer to IDT entry to be updated.
@param InterruptHandler IDT handler value.
**/
VOID
ArchUpdateIdtEntry (
IN IA32_IDT_GATE_DESCRIPTOR *IdtEntry,
IN UINTN InterruptHandler
);
/**
Read IDT handler value from IDT entry.
@param IdtEntry Pointer to IDT entry to be read.
**/
UINTN
ArchGetIdtHandler (
IN IA32_IDT_GATE_DESCRIPTOR *IdtEntry
);
/**
Prints a message to the serial port.
@param Format Format string for the message to print.
@param ... Variable argument list whose contents are accessed
based on the format string specified by Format.
**/
VOID
EFIAPI
InternalPrintMessage (
IN CONST CHAR8 *Format,
...
);
/**
Find and display image base address and return image base and its entry point.
@param CurrentEip Current instruction pointer.
@param EntryPoint Return module entry point if module header is found.
@return !0 Image base address.
@return 0 Image header cannot be found.
**/
UINTN
FindModuleImageBase (
IN UINTN CurrentEip,
OUT UINTN *EntryPoint
);
/**
Display CPU information.
@param InterruptType Exception type.
@param SystemContext Pointer to EFI_SYSTEM_CONTEXT.
**/
VOID
DumpCpuContent (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN EFI_SYSTEM_CONTEXT SystemContext
);
/**
Internal worker function to initialize exception handler.
@param[in] VectorInfo Pointer to reserved vector list.
@retval EFI_SUCCESS CPU Exception Entries have been successfully initialized
with default exception handlers.
@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
@retval EFI_UNSUPPORTED This function is not supported.
**/
EFI_STATUS
InitializeCpuExceptionHandlersWorker (
IN EFI_VECTOR_HANDOFF_INFO *VectorInfo OPTIONAL
);
/**
Registers a function to be called from the processor interrupt handler.
@param[in] InterruptType Defines which interrupt or exception to hook.
@param[in] InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER that is called
when a processor interrupt occurs. If this parameter is NULL, then the handler
will be uninstalled.
@retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.
@retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was
previously installed.
@retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not
previously installed.
@retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported,
or this function is not supported.
*/
EFI_STATUS
RegisterCpuInterruptHandlerWorker (
IN EFI_EXCEPTION_TYPE InterruptType,
IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
);
/**
Internal worker function to update IDT entries accordling to vector attributes.
@param[in] IdtTable Pointer to IDT table.
@param[in] TemplateMap Pointer to a buffer where the address map is returned.
@param[in] IdtEntryCount IDT entries number to be updated.
**/
VOID
UpdateIdtTable (
IN IA32_IDT_GATE_DESCRIPTOR *IdtTable,
IN EXCEPTION_HANDLER_TEMPLATE_MAP *TemplateMap,
IN UINTN IdtEntryCount
);
/**
Save CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.
@param[in] ExceptionType Exception type.
@param[in] SystemContext Pointer to EFI_SYSTEM_CONTEXT.
**/
VOID
ArchSaveExceptionContext (
IN UINTN ExceptionType,
IN EFI_SYSTEM_CONTEXT SystemContext
);
/**
Restore CPU exception context when handling EFI_VECTOR_HANDOFF_HOOK_AFTER case.
@param[in] ExceptionType Exception type.
@param[in] SystemContext Pointer to EFI_SYSTEM_CONTEXT.
**/
VOID
ArchRestoreExceptionContext (
IN UINTN ExceptionType,
IN EFI_SYSTEM_CONTEXT SystemContext
);
/**
Fix up the vector number in the vector code.
@param[in] VectorBase Base address of the vector handler.
@param[in] VectorNum Index of vector.
**/
VOID
EFIAPI
AsmVectorNumFixup (
IN VOID *VectorBase,
IN UINT8 VectorNum
);
/**
Read and save reserved vector information
@param[in] VectorInfo Pointer to reserved vector list.
@param[out] ReservedVector Pointer to reserved vector data buffer.
@param[in] VectorCount Vector number to be updated.
@return EFI_SUCCESS Read and save vector info successfully.
@retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
**/
EFI_STATUS
ReadAndVerifyVectorInfo (
IN EFI_VECTOR_HANDOFF_INFO *VectorInfo,
OUT RESERVED_VECTORS_DATA *ReservedVector,
IN UINTN VectorCount
);
#endif
|
