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
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
|
/** @file
Default exception handler
Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR>
Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi.h>
#include <Library/UefiLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/PeCoffGetEntryPointLib.h>
#include <Library/PrintLib.h>
#include <Library/SerialPortLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Guid/DebugImageInfoTable.h>
#include <Protocol/DebugSupport.h>
#include <Protocol/LoadedImage.h>
//
// Maximum number of characters to print to serial (UINT8s) and to console if
// available (as UINT16s)
//
#define MAX_PRINT_CHARS 100
STATIC CHAR8 *gExceptionTypeString[] = {
"Synchronous",
"IRQ",
"FIQ",
"SError"
};
STATIC BOOLEAN mRecursiveException;
CHAR8 *
GetImageName (
IN UINTN FaultAddress,
OUT UINTN *ImageBase,
OUT UINTN *PeCoffSizeOfHeaders
);
STATIC
VOID
DescribeInstructionOrDataAbort (
IN CHAR8 *AbortType,
IN UINTN Iss
)
{
CHAR8 *AbortCause;
switch (Iss & 0x3f) {
case 0x0: AbortCause = "Address size fault, zeroth level of translation or translation table base register";
break;
case 0x1: AbortCause = "Address size fault, first level";
break;
case 0x2: AbortCause = "Address size fault, second level";
break;
case 0x3: AbortCause = "Address size fault, third level";
break;
case 0x4: AbortCause = "Translation fault, zeroth level";
break;
case 0x5: AbortCause = "Translation fault, first level";
break;
case 0x6: AbortCause = "Translation fault, second level";
break;
case 0x7: AbortCause = "Translation fault, third level";
break;
case 0x9: AbortCause = "Access flag fault, first level";
break;
case 0xa: AbortCause = "Access flag fault, second level";
break;
case 0xb: AbortCause = "Access flag fault, third level";
break;
case 0xd: AbortCause = "Permission fault, first level";
break;
case 0xe: AbortCause = "Permission fault, second level";
break;
case 0xf: AbortCause = "Permission fault, third level";
break;
case 0x10: AbortCause = "Synchronous external abort";
break;
case 0x18: AbortCause = "Synchronous parity error on memory access";
break;
case 0x11: AbortCause = "Asynchronous external abort";
break;
case 0x19: AbortCause = "Asynchronous parity error on memory access";
break;
case 0x14: AbortCause = "Synchronous external abort on translation table walk, zeroth level";
break;
case 0x15: AbortCause = "Synchronous external abort on translation table walk, first level";
break;
case 0x16: AbortCause = "Synchronous external abort on translation table walk, second level";
break;
case 0x17: AbortCause = "Synchronous external abort on translation table walk, third level";
break;
case 0x1c: AbortCause = "Synchronous parity error on memory access on translation table walk, zeroth level";
break;
case 0x1d: AbortCause = "Synchronous parity error on memory access on translation table walk, first level";
break;
case 0x1e: AbortCause = "Synchronous parity error on memory access on translation table walk, second level";
break;
case 0x1f: AbortCause = "Synchronous parity error on memory access on translation table walk, third level";
break;
case 0x21: AbortCause = "Alignment fault";
break;
case 0x22: AbortCause = "Debug event";
break;
case 0x30: AbortCause = "TLB conflict abort";
break;
case 0x33:
case 0x34: AbortCause = "IMPLEMENTATION DEFINED";
break;
case 0x35:
case 0x36: AbortCause = "Domain fault";
break;
default: AbortCause = "";
break;
}
DEBUG ((DEBUG_ERROR, "\n%a: %a\n", AbortType, AbortCause));
}
STATIC
VOID
DescribeExceptionSyndrome (
IN UINT64 Esr
)
{
CHAR8 *Message;
UINTN Ec;
UINTN Iss;
Ec = Esr >> 26;
Iss = Esr & 0x00ffffff;
switch (Ec) {
case 0x15: Message = "SVC executed in AArch64";
break;
case 0x20:
case 0x21: DescribeInstructionOrDataAbort ("Instruction abort", Iss);
return;
case 0x22: Message = "PC alignment fault";
break;
case 0x23: Message = "SP alignment fault";
break;
case 0x24:
case 0x25: DescribeInstructionOrDataAbort ("Data abort", Iss);
return;
default: return;
}
DEBUG ((DEBUG_ERROR, "\n %a \n", Message));
}
STATIC
CONST CHAR8 *
BaseName (
IN CONST CHAR8 *FullName
)
{
CONST CHAR8 *Str;
Str = FullName + AsciiStrLen (FullName);
while (--Str > FullName) {
if ((*Str == '/') || (*Str == '\\')) {
return Str + 1;
}
}
return Str;
}
/**
This is the default action to take on an unexpected exception
Since this is exception context don't do anything crazy like try to allocate memory.
@param ExceptionType Type of the exception
@param SystemContext Register state at the time of the Exception
**/
VOID
DefaultExceptionHandler (
IN EFI_EXCEPTION_TYPE ExceptionType,
IN OUT EFI_SYSTEM_CONTEXT SystemContext
)
{
CHAR8 Buffer[MAX_PRINT_CHARS];
CHAR16 UnicodeBuffer[MAX_PRINT_CHARS];
UINTN CharCount;
INT32 Offset;
if (mRecursiveException) {
STATIC CHAR8 CONST Message[] = "\nRecursive exception occurred while dumping the CPU state\n";
SerialPortWrite ((UINT8 *)Message, sizeof Message - 1);
CpuDeadLoop ();
}
mRecursiveException = TRUE;
CharCount = AsciiSPrint (Buffer, sizeof (Buffer), "\n\n%a Exception at 0x%016lx\n", gExceptionTypeString[ExceptionType], SystemContext.SystemContextAArch64->ELR);
SerialPortWrite ((UINT8 *)Buffer, CharCount);
// Prepare a unicode buffer for ConOut, if applicable, in case the buffer
// gets reused.
UnicodeSPrintAsciiFormat (UnicodeBuffer, MAX_PRINT_CHARS, Buffer);
DEBUG_CODE_BEGIN ();
CHAR8 *Pdb, *PrevPdb;
UINTN ImageBase;
UINTN PeCoffSizeOfHeader;
UINT64 *Fp;
UINT64 RootFp[2];
UINTN Idx;
PrevPdb = Pdb = GetImageName (SystemContext.SystemContextAArch64->ELR, &ImageBase, &PeCoffSizeOfHeader);
if (Pdb != NULL) {
DEBUG ((
DEBUG_ERROR,
"PC 0x%012lx (0x%012lx+0x%08x) [ 0] %a\n",
SystemContext.SystemContextAArch64->ELR,
ImageBase,
SystemContext.SystemContextAArch64->ELR - ImageBase,
BaseName (Pdb)
));
} else {
DEBUG ((DEBUG_ERROR, "PC 0x%012lx\n", SystemContext.SystemContextAArch64->ELR));
}
if ((UINT64 *)SystemContext.SystemContextAArch64->FP != 0) {
Idx = 0;
RootFp[0] = ((UINT64 *)SystemContext.SystemContextAArch64->FP)[0];
RootFp[1] = ((UINT64 *)SystemContext.SystemContextAArch64->FP)[1];
if (RootFp[1] != SystemContext.SystemContextAArch64->LR) {
RootFp[0] = SystemContext.SystemContextAArch64->FP;
RootFp[1] = SystemContext.SystemContextAArch64->LR;
}
for (Fp = RootFp; Fp[0] != 0; Fp = (UINT64 *)Fp[0]) {
Pdb = GetImageName (Fp[1], &ImageBase, &PeCoffSizeOfHeader);
if (Pdb != NULL) {
if (Pdb != PrevPdb) {
Idx++;
PrevPdb = Pdb;
}
DEBUG ((
DEBUG_ERROR,
"PC 0x%012lx (0x%012lx+0x%08x) [% 2d] %a\n",
Fp[1],
ImageBase,
Fp[1] - ImageBase,
Idx,
BaseName (Pdb)
));
} else {
DEBUG ((DEBUG_ERROR, "PC 0x%012lx\n", Fp[1]));
}
}
PrevPdb = Pdb = GetImageName (SystemContext.SystemContextAArch64->ELR, &ImageBase, &PeCoffSizeOfHeader);
if (Pdb != NULL) {
DEBUG ((DEBUG_ERROR, "\n[ 0] %a\n", Pdb));
}
Idx = 0;
for (Fp = RootFp; Fp[0] != 0; Fp = (UINT64 *)Fp[0]) {
Pdb = GetImageName (Fp[1], &ImageBase, &PeCoffSizeOfHeader);
if ((Pdb != NULL) && (Pdb != PrevPdb)) {
DEBUG ((DEBUG_ERROR, "[% 2d] %a\n", ++Idx, Pdb));
PrevPdb = Pdb;
}
}
}
DEBUG_CODE_END ();
DEBUG ((DEBUG_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));
DEBUG ((DEBUG_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));
DEBUG ((DEBUG_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));
DEBUG ((DEBUG_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));
DEBUG ((DEBUG_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));
DEBUG ((DEBUG_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));
DEBUG ((DEBUG_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));
DEBUG ((DEBUG_ERROR, " X28 0x%016lx FP 0x%016lx LR 0x%016lx \n", SystemContext.SystemContextAArch64->X28, SystemContext.SystemContextAArch64->FP, SystemContext.SystemContextAArch64->LR));
/* We save these as 128bit numbers, but have to print them as two 64bit numbers,
so swap the 64bit words to correctly represent a 128bit number. */
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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]));
DEBUG ((DEBUG_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));
DEBUG ((DEBUG_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));
DescribeExceptionSyndrome (SystemContext.SystemContextAArch64->ESR);
DEBUG ((DEBUG_ERROR, "\nStack dump:\n"));
for (Offset = -256; Offset < 256; Offset += 32) {
DEBUG ((
DEBUG_ERROR,
"%c %013lx: %016lx %016lx %016lx %016lx\n",
Offset == 0 ? '>' : ' ',
SystemContext.SystemContextAArch64->SP + Offset,
*(UINT64 *)(SystemContext.SystemContextAArch64->SP + Offset),
*(UINT64 *)(SystemContext.SystemContextAArch64->SP + Offset + 8),
*(UINT64 *)(SystemContext.SystemContextAArch64->SP + Offset + 16),
*(UINT64 *)(SystemContext.SystemContextAArch64->SP + Offset + 24)
));
}
// Attempt to print that we had a synchronous exception to ConOut. We do
// this after the serial logging as ConOut's logging is more complex and we
// aren't guaranteed to succeed.
if (gST->ConOut != NULL) {
gST->ConOut->OutputString (gST->ConOut, UnicodeBuffer);
}
ASSERT (FALSE);
CpuDeadLoop ();
}
|
