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
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
|
/** @file
Provides services to print debug and assert messages to a debug output device.
The Debug library supports debug print and asserts based on a combination of macros and code.
The debug library can be turned on and off so that the debug code does not increase the size of an image.
Copyright (c) 2006 - 2008, Intel Corporation
All rights reserved. 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 __DEBUG_LIB_H__
#define __DEBUG_LIB_H__
//
// Declare bits for PcdDebugPropertyMask
//
#define DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED 0x01
#define DEBUG_PROPERTY_DEBUG_PRINT_ENABLED 0x02
#define DEBUG_PROPERTY_DEBUG_CODE_ENABLED 0x04
#define DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED 0x08
#define DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED 0x10
#define DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED 0x20
//
// Declare bits for PcdDebugPrintErrorLevel and the ErrorLevel parameter of DebugPrint()
//
#define DEBUG_INIT 0x00000001 // Initialization
#define DEBUG_WARN 0x00000002 // Warnings
#define DEBUG_LOAD 0x00000004 // Load events
#define DEBUG_FS 0x00000008 // EFI File system
#define DEBUG_POOL 0x00000010 // Alloc & Free's
#define DEBUG_PAGE 0x00000020 // Alloc & Free's
#define DEBUG_INFO 0x00000040 // Verbose
#define DEBUG_DISPATCH 0x00000080 // PEI/DXE Dispatchers
#define DEBUG_VARIABLE 0x00000100 // Variable
#define DEBUG_BM 0x00000400 // Boot Manager
#define DEBUG_BLKIO 0x00001000 // BlkIo Driver
#define DEBUG_NET 0x00004000 // SNI Driver
#define DEBUG_UNDI 0x00010000 // UNDI Driver
#define DEBUG_LOADFILE 0x00020000 // UNDI Driver
#define DEBUG_EVENT 0x00080000 // Event messages
#define DEBUG_ERROR 0x80000000 // Error
//
// Aliases of debug message mask bits
//
#define EFI_D_INIT DEBUG_INIT
#define EFI_D_WARN DEBUG_WARN
#define EFI_D_LOAD DEBUG_LOAD
#define EFI_D_FS DEBUG_FS
#define EFI_D_POOL DEBUG_POOL
#define EFI_D_PAGE DEBUG_PAGE
#define EFI_D_INFO DEBUG_INFO
#define EFI_D_DISPATCH DEBUG_DISPATCH
#define EFI_D_VARIABLE DEBUG_VARIABLE
#define EFI_D_BM DEBUG_BM
#define EFI_D_BLKIO DEBUG_BLKIO
#define EFI_D_NET DEBUG_NET
#define EFI_D_UNDI DEBUG_UNDI
#define EFI_D_LOADFILE DEBUG_LOADFILE
#define EFI_D_EVENT DEBUG_EVENT
#define EFI_D_ERROR DEBUG_ERROR
/**
Prints a debug message to the debug output device if the specified error level is enabled.
If any bit in ErrorLevel is also set in PcdDebugPrintErrorLevel, then print
the message specified by Format and the associated variable argument list to
the debug output device.
If Format is NULL, then ASSERT().
@param ErrorLevel The error level of the debug message.
@param Format Format string for the debug message to print.
@param ... Variable argument list whose contents are accessed
based on the format string specified by Format.
**/
VOID
EFIAPI
DebugPrint (
IN UINTN ErrorLevel,
IN CONST CHAR8 *Format,
...
);
/**
Prints an assert message containing a filename, line number, and description.
This may be followed by a breakpoint or a dead loop.
Print a message of the form "ASSERT <FileName>(<LineNumber>): <Description>\n"
to the debug output device. If DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED bit of
PcdDebugProperyMask is set then CpuBreakpoint() is called. Otherwise, if
DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED bit of PcdDebugProperyMask is set then
CpuDeadLoop() is called. If neither of these bits are set, then this function
returns immediately after the message is printed to the debug output device.
DebugAssert() must actively prevent recursion. If DebugAssert() is called while
processing another DebugAssert(), then DebugAssert() must return immediately.
If FileName is NULL, then a <FileName> string of "(NULL) Filename" is printed.
If Description is NULL, then a <Description> string of "(NULL) Description" is printed.
@param FileName Pointer to the name of the source file that generated the assert condition.
@param LineNumber The line number in the source file that generated the assert condition
@param Description Pointer to the description of the assert condition.
**/
VOID
EFIAPI
DebugAssert (
IN CONST CHAR8 *FileName,
IN UINTN LineNumber,
IN CONST CHAR8 *Description
);
/**
Fills a target buffer with PcdDebugClearMemoryValue, and returns the target buffer.
This function fills Length bytes of Buffer with the value specified by
PcdDebugClearMemoryValue, and returns Buffer.
If Buffer is NULL, then ASSERT().
If Length is greater than (MAX_ADDRESS -Buffer + 1), then ASSERT().
@param Buffer Pointer to the target buffer to be filled with PcdDebugClearMemoryValue.
@param Length Number of bytes in Buffer to fill with zeros PcdDebugClearMemoryValue.
@return Buffer Pointer to the target buffer filled with PcdDebugClearMemoryValue.
**/
VOID *
EFIAPI
DebugClearMemory (
OUT VOID *Buffer,
IN UINTN Length
);
/**
Returns TRUE if ASSERT() macros are enabled.
This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of
PcdDebugProperyMask is set. Otherwise FALSE is returned.
@retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.
@retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.
**/
BOOLEAN
EFIAPI
DebugAssertEnabled (
VOID
);
/**
Returns TRUE if DEBUG()macros are enabled.
This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of
PcdDebugProperyMask is set. Otherwise FALSE is returned.
@retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.
@retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.
**/
BOOLEAN
EFIAPI
DebugPrintEnabled (
VOID
);
/**
Returns TRUE if DEBUG_CODE()macros are enabled.
This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of
PcdDebugProperyMask is set. Otherwise FALSE is returned.
@retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.
@retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.
**/
BOOLEAN
EFIAPI
DebugCodeEnabled (
VOID
);
/**
Returns TRUE if DEBUG_CLEAR_MEMORY()macro is enabled.
This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of
PcdDebugProperyMask is set. Otherwise FALSE is returned.
@retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.
@retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.
**/
BOOLEAN
EFIAPI
DebugClearMemoryEnabled (
VOID
);
/**
Internal worker macro that calls DebugAssert().
This macro calls DebugAssert() passing in the filename, line number, and
expression that evailated to FALSE.
@param Expression Boolean expression that evailated to FALSE
**/
#define _ASSERT(Expression) DebugAssert (__FILE__, __LINE__, #Expression)
/**
Internal worker macro that calls DebugPrint().
This macro calls DebugPrint() passing in the debug error level, a format
string, and a variable argument list.
@param Expression Expression containing an error level, a format string,
and a variable argument list based on the format string.
**/
#define _DEBUG(Expression) DebugPrint Expression
/**
Macro that calls DebugAssert() if a expression evaluates to FALSE.
If the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set,
then this macro evaluates the Boolean expression specified by Expression. If
Expression evaluates to FALSE, then DebugAssert() is called passing in the
source filename, source line number, and Expression.
@param Expression Boolean expression
**/
#define ASSERT(Expression) \
do { \
if (DebugAssertEnabled ()) { \
if (!(Expression)) { \
_ASSERT (Expression); \
} \
} \
} while (FALSE)
/**
Macro that calls DebugPrint().
If the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set,
then this macro passes Expression to DebugPrint().
@param Expression Expression containing an error level, a format string,
and a variable argument list based on the format string.
**/
#define DEBUG(Expression) \
do { \
if (DebugPrintEnabled ()) { \
_DEBUG (Expression); \
} \
} while (FALSE)
/**
Macro that calls DebugAssert() if an EFI_STATUS evaluates to an error code.
If the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set,
then this macro evaluates the EFI_STATUS value specified by StatusParameter.
If StatusParameter is an error code, then DebugAssert() is called passing in
the source filename, source line number, and StatusParameter.
@param StatusParameter EFI_STATUS value to evaluate.
**/
#define ASSERT_EFI_ERROR(StatusParameter) \
do { \
if (DebugAssertEnabled ()) { \
if (EFI_ERROR (StatusParameter)) { \
DEBUG ((EFI_D_ERROR, "\nASSERT_EFI_ERROR (Status = %r)\n", StatusParameter)); \
_ASSERT (!EFI_ERROR (StatusParameter)); \
} \
} \
} while (FALSE)
/**
Macro that calls DebugAssert() if a protocol is already installed in the
handle database.
If the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear,
then return.
If Handle is NULL, then a check is made to see if the protocol specified by Guid
is present on any handle in the handle database. If Handle is not NULL, then
a check is made to see if the protocol specified by Guid is present on the
handle specified by Handle. If the check finds the protocol, then DebugAssert()
is called passing in the source filename, source line number, and Guid.
If Guid is NULL, then ASSERT().
@param Handle The handle to check for the protocol. This is an optional
parameter that may be NULL. If it is NULL, then the entire
handle database is searched.
@param Guid Pointer to a protocol GUID.
**/
#define ASSERT_PROTOCOL_ALREADY_INSTALLED(Handle, Guid) \
do { \
if (DebugAssertEnabled ()) { \
VOID *Instance; \
ASSERT (Guid != NULL); \
if (Handle == NULL) { \
if (!EFI_ERROR (gBS->LocateProtocol ((EFI_GUID *)Guid, NULL, &Instance))) { \
_ASSERT (Guid already installed in database); \
} \
} else { \
if (!EFI_ERROR (gBS->HandleProtocol (Handle, (EFI_GUID *)Guid, &Instance))) { \
_ASSERT (Guid already installed on Handle); \
} \
} \
} \
} while (FALSE)
/**
Macro that marks the beginning of debug source code.
If the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set,
then this macro marks the beginning of source code that is included in a module.
Otherwise, the source lines between DEBUG_CODE_BEGIN() and DEBUG_CODE_END()
are not included in a module.
**/
#define DEBUG_CODE_BEGIN() do { if (DebugCodeEnabled ()) { UINT8 __DebugCodeLocal
/**
Macro that marks the end of debug source code.
If the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set,
then this macro marks the end of source code that is included in a module.
Otherwise, the source lines between DEBUG_CODE_BEGIN() and DEBUG_CODE_END()
are not included in a module.
**/
#define DEBUG_CODE_END() __DebugCodeLocal = 0; __DebugCodeLocal++; } } while (FALSE)
/**
Macro that declares a section of debug source code.
If the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set,
then the source code specified by Expression is included in a module.
Otherwise, the source specified by Expression is not included in a module.
**/
#define DEBUG_CODE(Expression) \
DEBUG_CODE_BEGIN (); \
Expression \
DEBUG_CODE_END ()
/**
Macro that calls DebugClearMemory() to clear a buffer to a default value.
If the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set,
then this macro calls DebugClearMemory() passing in Address and Length.
@param Address Pointer to a buffer.
@param Length The number of bytes in the buffer to set.
**/
#define DEBUG_CLEAR_MEMORY(Address, Length) \
do { \
if (DebugClearMemoryEnabled ()) { \
DebugClearMemory (Address, Length); \
} \
} while (FALSE)
/**
Macro that calls DebugAssert() if the containing record does not have a
matching signature. If the signatures matches, then a pointer to the data
structure that contains a specified field of that data structure is returned.
This is a light weight method hide information by placing a public data
structure inside a larger private data structure and using a pointer to the
public data structure to retrieve a pointer to the private data structure.
If the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear,
then this macro computes the offset, in bytes, of field specified by Field
from the beginning of the data structure specified by TYPE. This offset is
subtracted from Record, and is used to return a pointer to a data structure
of the type specified by TYPE.
If the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set,
then this macro computes the offset, in bytes, of field specified by Field from
the beginning of the data structure specified by TYPE. This offset is
subtracted from Record, and is used to compute a pointer to a data structure of
the type specified by TYPE. The Signature field of the data structure specified
by TYPE is compared to TestSignature. If the signatures match, then a pointer
to the pointer to a data structure of the type specified by TYPE is returned.
If the signatures do not match, then DebugAssert() is called with a description
of "CR has a bad signature" and Record is returned.
If the data type specified by TYPE does not contain the field specified by Field,
then the module will not compile.
If TYPE does not contain a field called Signature, then the module will not
compile.
@param Record Pointer to the field specified by Field within a data
structure of type TYPE.
@param TYPE The name of the data structure type to return This
data structure must contain the field specified by Field.
@param Field The name of the field in the data structure specified
by TYPE to which Record points.
@param TestSignature The 32-bit signature value to match.
**/
#define CR(Record, TYPE, Field, TestSignature) \
(DebugAssertEnabled () && (_CR (Record, TYPE, Field)->Signature != TestSignature)) ? \
(TYPE *) (_ASSERT (CR has Bad Signature), Record) : \
_CR (Record, TYPE, Field)
#endif
|