2 Default exception handler
4 Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
5 Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 #include <Library/UefiLib.h>
19 #include <Library/BaseLib.h>
20 #include <Library/DebugLib.h>
21 #include <Library/PeCoffGetEntryPointLib.h>
22 #include <Library/PrintLib.h>
23 #include <Library/ArmDisassemblerLib.h>
24 #include <Library/SerialPortLib.h>
26 #include <Guid/DebugImageInfoTable.h>
27 #include <Protocol/DebugSupport.h>
28 #include <Protocol/LoadedImage.h>
30 STATIC CHAR8
*gExceptionTypeString
[] = {
37 STATIC BOOLEAN mRecursiveException
;
41 IN UINTN FaultAddress
,
43 OUT UINTN
*PeCoffSizeOfHeaders
48 DescribeInstructionOrDataAbort (
56 case 0x0: AbortCause
= "Address size fault, zeroth level of translation or translation table base register"; break;
57 case 0x1: AbortCause
= "Address size fault, first level"; break;
58 case 0x2: AbortCause
= "Address size fault, second level"; break;
59 case 0x3: AbortCause
= "Address size fault, third level"; break;
60 case 0x4: AbortCause
= "Translation fault, zeroth level"; break;
61 case 0x5: AbortCause
= "Translation fault, first level"; break;
62 case 0x6: AbortCause
= "Translation fault, second level"; break;
63 case 0x7: AbortCause
= "Translation fault, third level"; break;
64 case 0x9: AbortCause
= "Access flag fault, first level"; break;
65 case 0xa: AbortCause
= "Access flag fault, second level"; break;
66 case 0xb: AbortCause
= "Access flag fault, third level"; break;
67 case 0xd: AbortCause
= "Permission fault, first level"; break;
68 case 0xe: AbortCause
= "Permission fault, second level"; break;
69 case 0xf: AbortCause
= "Permission fault, third level"; break;
70 case 0x10: AbortCause
= "Synchronous external abort"; break;
71 case 0x18: AbortCause
= "Synchronous parity error on memory access"; break;
72 case 0x11: AbortCause
= "Asynchronous external abort"; break;
73 case 0x19: AbortCause
= "Asynchronous parity error on memory access"; break;
74 case 0x14: AbortCause
= "Synchronous external abort on translation table walk, zeroth level"; break;
75 case 0x15: AbortCause
= "Synchronous external abort on translation table walk, first level"; break;
76 case 0x16: AbortCause
= "Synchronous external abort on translation table walk, second level"; break;
77 case 0x17: AbortCause
= "Synchronous external abort on translation table walk, third level"; break;
78 case 0x1c: AbortCause
= "Synchronous parity error on memory access on translation table walk, zeroth level"; break;
79 case 0x1d: AbortCause
= "Synchronous parity error on memory access on translation table walk, first level"; break;
80 case 0x1e: AbortCause
= "Synchronous parity error on memory access on translation table walk, second level"; break;
81 case 0x1f: AbortCause
= "Synchronous parity error on memory access on translation table walk, third level"; break;
82 case 0x21: AbortCause
= "Alignment fault"; break;
83 case 0x22: AbortCause
= "Debug event"; break;
84 case 0x30: AbortCause
= "TLB conflict abort"; break;
86 case 0x34: AbortCause
= "IMPLEMENTATION DEFINED"; break;
88 case 0x36: AbortCause
= "Domain fault"; break;
89 default: AbortCause
= ""; break;
92 DEBUG ((EFI_D_ERROR
, "\n%a: %a\n", AbortType
, AbortCause
));
97 DescribeExceptionSyndrome (
106 Iss
= Esr
& 0x00ffffff;
109 case 0x15: Message
= "SVC executed in AArch64"; break;
111 case 0x21: DescribeInstructionOrDataAbort ("Instruction abort", Iss
); return;
112 case 0x22: Message
= "PC alignment fault"; break;
113 case 0x23: Message
= "SP alignment fault"; break;
115 case 0x25: DescribeInstructionOrDataAbort ("Data abort", Iss
); return;
119 DEBUG ((EFI_D_ERROR
, "\n %a \n", Message
));
123 This is the default action to take on an unexpected exception
125 Since this is exception context don't do anything crazy like try to allcoate memory.
127 @param ExceptionType Type of the exception
128 @param SystemContext Register state at the time of the Exception
132 DefaultExceptionHandler (
133 IN EFI_EXCEPTION_TYPE ExceptionType
,
134 IN OUT EFI_SYSTEM_CONTEXT SystemContext
141 if (mRecursiveException
) {
142 CharCount
= AsciiSPrint (Buffer
, sizeof (Buffer
),"\nRecursive exception occurred while dumping the CPU state\n");
143 SerialPortWrite ((UINT8
*) Buffer
, CharCount
);
146 mRecursiveException
= TRUE
;
148 CharCount
= AsciiSPrint (Buffer
,sizeof (Buffer
),"\n\n%a Exception at 0x%016lx\n", gExceptionTypeString
[ExceptionType
], SystemContext
.SystemContextAArch64
->ELR
);
149 SerialPortWrite ((UINT8
*) Buffer
, CharCount
);
154 UINTN PeCoffSizeOfHeader
;
155 Pdb
= GetImageName (SystemContext
.SystemContextAArch64
->ELR
, &ImageBase
, &PeCoffSizeOfHeader
);
157 DEBUG ((EFI_D_ERROR
, "%a loaded at 0x%016lx \n", Pdb
, ImageBase
));
161 DEBUG ((EFI_D_ERROR
, "\n X0 0x%016lx X1 0x%016lx X2 0x%016lx X3 0x%016lx\n", SystemContext
.SystemContextAArch64
->X0
, SystemContext
.SystemContextAArch64
->X1
, SystemContext
.SystemContextAArch64
->X2
, SystemContext
.SystemContextAArch64
->X3
));
162 DEBUG ((EFI_D_ERROR
, " X4 0x%016lx X5 0x%016lx X6 0x%016lx X7 0x%016lx\n", SystemContext
.SystemContextAArch64
->X4
, SystemContext
.SystemContextAArch64
->X5
, SystemContext
.SystemContextAArch64
->X6
, SystemContext
.SystemContextAArch64
->X7
));
163 DEBUG ((EFI_D_ERROR
, " X8 0x%016lx X9 0x%016lx X10 0x%016lx X11 0x%016lx\n", SystemContext
.SystemContextAArch64
->X8
, SystemContext
.SystemContextAArch64
->X9
, SystemContext
.SystemContextAArch64
->X10
, SystemContext
.SystemContextAArch64
->X11
));
164 DEBUG ((EFI_D_ERROR
, " X12 0x%016lx X13 0x%016lx X14 0x%016lx X15 0x%016lx\n", SystemContext
.SystemContextAArch64
->X12
, SystemContext
.SystemContextAArch64
->X13
, SystemContext
.SystemContextAArch64
->X14
, SystemContext
.SystemContextAArch64
->X15
));
165 DEBUG ((EFI_D_ERROR
, " X16 0x%016lx X17 0x%016lx X18 0x%016lx X19 0x%016lx\n", SystemContext
.SystemContextAArch64
->X16
, SystemContext
.SystemContextAArch64
->X17
, SystemContext
.SystemContextAArch64
->X18
, SystemContext
.SystemContextAArch64
->X19
));
166 DEBUG ((EFI_D_ERROR
, " X20 0x%016lx X21 0x%016lx X22 0x%016lx X23 0x%016lx\n", SystemContext
.SystemContextAArch64
->X20
, SystemContext
.SystemContextAArch64
->X21
, SystemContext
.SystemContextAArch64
->X22
, SystemContext
.SystemContextAArch64
->X23
));
167 DEBUG ((EFI_D_ERROR
, " X24 0x%016lx X25 0x%016lx X26 0x%016lx X27 0x%016lx\n", SystemContext
.SystemContextAArch64
->X24
, SystemContext
.SystemContextAArch64
->X25
, SystemContext
.SystemContextAArch64
->X26
, SystemContext
.SystemContextAArch64
->X27
));
168 DEBUG ((EFI_D_ERROR
, " X28 0x%016lx FP 0x%016lx LR 0x%016lx \n", SystemContext
.SystemContextAArch64
->X28
, SystemContext
.SystemContextAArch64
->FP
, SystemContext
.SystemContextAArch64
->LR
));
170 /* We save these as 128bit numbers, but have to print them as two 64bit numbers,
171 so swap the 64bit words to correctly represent a 128bit number. */
172 DEBUG ((EFI_D_ERROR
, "\n V0 0x%016lx %016lx V1 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V0
[1], SystemContext
.SystemContextAArch64
->V0
[0], SystemContext
.SystemContextAArch64
->V1
[1], SystemContext
.SystemContextAArch64
->V1
[0]));
173 DEBUG ((EFI_D_ERROR
, " V2 0x%016lx %016lx V3 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V2
[1], SystemContext
.SystemContextAArch64
->V2
[0], SystemContext
.SystemContextAArch64
->V3
[1], SystemContext
.SystemContextAArch64
->V3
[0]));
174 DEBUG ((EFI_D_ERROR
, " V4 0x%016lx %016lx V5 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V4
[1], SystemContext
.SystemContextAArch64
->V4
[0], SystemContext
.SystemContextAArch64
->V5
[1], SystemContext
.SystemContextAArch64
->V5
[0]));
175 DEBUG ((EFI_D_ERROR
, " V6 0x%016lx %016lx V7 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V6
[1], SystemContext
.SystemContextAArch64
->V6
[0], SystemContext
.SystemContextAArch64
->V7
[1], SystemContext
.SystemContextAArch64
->V7
[0]));
176 DEBUG ((EFI_D_ERROR
, " V8 0x%016lx %016lx V9 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V8
[1], SystemContext
.SystemContextAArch64
->V8
[0], SystemContext
.SystemContextAArch64
->V9
[1], SystemContext
.SystemContextAArch64
->V9
[0]));
177 DEBUG ((EFI_D_ERROR
, " V10 0x%016lx %016lx V11 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V10
[1], SystemContext
.SystemContextAArch64
->V10
[0], SystemContext
.SystemContextAArch64
->V11
[1], SystemContext
.SystemContextAArch64
->V11
[0]));
178 DEBUG ((EFI_D_ERROR
, " V12 0x%016lx %016lx V13 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V12
[1], SystemContext
.SystemContextAArch64
->V12
[0], SystemContext
.SystemContextAArch64
->V13
[1], SystemContext
.SystemContextAArch64
->V13
[0]));
179 DEBUG ((EFI_D_ERROR
, " V14 0x%016lx %016lx V15 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V14
[1], SystemContext
.SystemContextAArch64
->V14
[0], SystemContext
.SystemContextAArch64
->V15
[1], SystemContext
.SystemContextAArch64
->V15
[0]));
180 DEBUG ((EFI_D_ERROR
, " V16 0x%016lx %016lx V17 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V16
[1], SystemContext
.SystemContextAArch64
->V16
[0], SystemContext
.SystemContextAArch64
->V17
[1], SystemContext
.SystemContextAArch64
->V17
[0]));
181 DEBUG ((EFI_D_ERROR
, " V18 0x%016lx %016lx V19 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V18
[1], SystemContext
.SystemContextAArch64
->V18
[0], SystemContext
.SystemContextAArch64
->V19
[1], SystemContext
.SystemContextAArch64
->V19
[0]));
182 DEBUG ((EFI_D_ERROR
, " V20 0x%016lx %016lx V21 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V20
[1], SystemContext
.SystemContextAArch64
->V20
[0], SystemContext
.SystemContextAArch64
->V21
[1], SystemContext
.SystemContextAArch64
->V21
[0]));
183 DEBUG ((EFI_D_ERROR
, " V22 0x%016lx %016lx V23 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V22
[1], SystemContext
.SystemContextAArch64
->V22
[0], SystemContext
.SystemContextAArch64
->V23
[1], SystemContext
.SystemContextAArch64
->V23
[0]));
184 DEBUG ((EFI_D_ERROR
, " V24 0x%016lx %016lx V25 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V24
[1], SystemContext
.SystemContextAArch64
->V24
[0], SystemContext
.SystemContextAArch64
->V25
[1], SystemContext
.SystemContextAArch64
->V25
[0]));
185 DEBUG ((EFI_D_ERROR
, " V26 0x%016lx %016lx V27 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V26
[1], SystemContext
.SystemContextAArch64
->V26
[0], SystemContext
.SystemContextAArch64
->V27
[1], SystemContext
.SystemContextAArch64
->V27
[0]));
186 DEBUG ((EFI_D_ERROR
, " V28 0x%016lx %016lx V29 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V28
[1], SystemContext
.SystemContextAArch64
->V28
[0], SystemContext
.SystemContextAArch64
->V29
[1], SystemContext
.SystemContextAArch64
->V29
[0]));
187 DEBUG ((EFI_D_ERROR
, " V30 0x%016lx %016lx V31 0x%016lx %016lx\n", SystemContext
.SystemContextAArch64
->V30
[1], SystemContext
.SystemContextAArch64
->V30
[0], SystemContext
.SystemContextAArch64
->V31
[1], SystemContext
.SystemContextAArch64
->V31
[0]));
189 DEBUG ((EFI_D_ERROR
, "\n SP 0x%016lx ELR 0x%016lx SPSR 0x%08lx FPSR 0x%08lx\n ESR 0x%08lx FAR 0x%016lx\n", SystemContext
.SystemContextAArch64
->SP
, SystemContext
.SystemContextAArch64
->ELR
, SystemContext
.SystemContextAArch64
->SPSR
, SystemContext
.SystemContextAArch64
->FPSR
, SystemContext
.SystemContextAArch64
->ESR
, SystemContext
.SystemContextAArch64
->FAR
));
191 DEBUG ((EFI_D_ERROR
, "\n ESR : EC 0x%02x IL 0x%x ISS 0x%08x\n", (SystemContext
.SystemContextAArch64
->ESR
& 0xFC000000) >> 26, (SystemContext
.SystemContextAArch64
->ESR
>> 25) & 0x1, SystemContext
.SystemContextAArch64
->ESR
& 0x1FFFFFF ));
193 DescribeExceptionSyndrome (SystemContext
.SystemContextAArch64
->ESR
);
195 DEBUG ((EFI_D_ERROR
, "\nStack dump:\n"));
196 for (Offset
= -256; Offset
< 256; Offset
+= 32) {
197 DEBUG ((EFI_D_ERROR
, "%c %013lx: %016lx %016lx %016lx %016lx\n",
198 Offset
== 0 ? '>' : ' ',
199 SystemContext
.SystemContextAArch64
->SP
+ Offset
,
200 *(UINT64
*)(SystemContext
.SystemContextAArch64
->SP
+ Offset
),
201 *(UINT64
*)(SystemContext
.SystemContextAArch64
->SP
+ Offset
+ 8),
202 *(UINT64
*)(SystemContext
.SystemContextAArch64
->SP
+ Offset
+ 16),
203 *(UINT64
*)(SystemContext
.SystemContextAArch64
->SP
+ Offset
+ 24)));