1 /*******************************************************************************
2  *
3  * Module Name: dbxface - AML Debugger external interfaces
4  *
5  ******************************************************************************/
6 
7 /******************************************************************************
8  *
9  * 1. Copyright Notice
10  *
11  * Some or all of this work - Copyright (c) 1999 - 2017, Intel Corp.
12  * All rights reserved.
13  *
14  * 2. License
15  *
16  * 2.1. This is your license from Intel Corp. under its intellectual property
17  * rights. You may have additional license terms from the party that provided
18  * you this software, covering your right to use that party's intellectual
19  * property rights.
20  *
21  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22  * copy of the source code appearing in this file ("Covered Code") an
23  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24  * base code distributed originally by Intel ("Original Intel Code") to copy,
25  * make derivatives, distribute, use and display any portion of the Covered
26  * Code in any form, with the right to sublicense such rights; and
27  *
28  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29  * license (with the right to sublicense), under only those claims of Intel
30  * patents that are infringed by the Original Intel Code, to make, use, sell,
31  * offer to sell, and import the Covered Code and derivative works thereof
32  * solely to the minimum extent necessary to exercise the above copyright
33  * license, and in no event shall the patent license extend to any additions
34  * to or modifications of the Original Intel Code. No other license or right
35  * is granted directly or by implication, estoppel or otherwise;
36  *
37  * The above copyright and patent license is granted only if the following
38  * conditions are met:
39  *
40  * 3. Conditions
41  *
42  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43  * Redistribution of source code of any substantial portion of the Covered
44  * Code or modification with rights to further distribute source must include
45  * the above Copyright Notice, the above License, this list of Conditions,
46  * and the following Disclaimer and Export Compliance provision. In addition,
47  * Licensee must cause all Covered Code to which Licensee contributes to
48  * contain a file documenting the changes Licensee made to create that Covered
49  * Code and the date of any change. Licensee must include in that file the
50  * documentation of any changes made by any predecessor Licensee. Licensee
51  * must include a prominent statement that the modification is derived,
52  * directly or indirectly, from Original Intel Code.
53  *
54  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55  * Redistribution of source code of any substantial portion of the Covered
56  * Code or modification without rights to further distribute source must
57  * include the following Disclaimer and Export Compliance provision in the
58  * documentation and/or other materials provided with distribution. In
59  * addition, Licensee may not authorize further sublicense of source of any
60  * portion of the Covered Code, and must include terms to the effect that the
61  * license from Licensee to its licensee is limited to the intellectual
62  * property embodied in the software Licensee provides to its licensee, and
63  * not to intellectual property embodied in modifications its licensee may
64  * make.
65  *
66  * 3.3. Redistribution of Executable. Redistribution in executable form of any
67  * substantial portion of the Covered Code or modification must reproduce the
68  * above Copyright Notice, and the following Disclaimer and Export Compliance
69  * provision in the documentation and/or other materials provided with the
70  * distribution.
71  *
72  * 3.4. Intel retains all right, title, and interest in and to the Original
73  * Intel Code.
74  *
75  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76  * Intel shall be used in advertising or otherwise to promote the sale, use or
77  * other dealings in products derived from or relating to the Covered Code
78  * without prior written authorization from Intel.
79  *
80  * 4. Disclaimer and Export Compliance
81  *
82  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88  * PARTICULAR PURPOSE.
89  *
90  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97  * LIMITED REMEDY.
98  *
99  * 4.3. Licensee shall not export, either directly or indirectly, any of this
100  * software or system incorporating such software without first obtaining any
101  * required license or other approval from the U. S. Department of Commerce or
102  * any other agency or department of the United States Government. In the
103  * event Licensee exports any such software from the United States or
104  * re-exports any such software from a foreign destination, Licensee shall
105  * ensure that the distribution and export/re-export of the software is in
106  * compliance with all laws, regulations, orders, or other restrictions of the
107  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108  * any of its subsidiaries will export/re-export any technical data, process,
109  * software, or service, directly or indirectly, to any country for which the
110  * United States government or any agency thereof requires an export license,
111  * other governmental approval, or letter of assurance, without first obtaining
112  * such license, approval or letter.
113  *
114  *****************************************************************************
115  *
116  * Alternatively, you may choose to be licensed under the terms of the
117  * following license:
118  *
119  * Redistribution and use in source and binary forms, with or without
120  * modification, are permitted provided that the following conditions
121  * are met:
122  * 1. Redistributions of source code must retain the above copyright
123  *    notice, this list of conditions, and the following disclaimer,
124  *    without modification.
125  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126  *    substantially similar to the "NO WARRANTY" disclaimer below
127  *    ("Disclaimer") and any redistribution must be conditioned upon
128  *    including a substantially similar Disclaimer requirement for further
129  *    binary redistribution.
130  * 3. Neither the names of the above-listed copyright holders nor the names
131  *    of any contributors may be used to endorse or promote products derived
132  *    from this software without specific prior written permission.
133  *
134  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145  *
146  * Alternatively, you may choose to be licensed under the terms of the
147  * GNU General Public License ("GPL") version 2 as published by the Free
148  * Software Foundation.
149  *
150  *****************************************************************************/
151 
152 #include "acpi.h"
153 #include "accommon.h"
154 #include "amlcode.h"
155 #include "acdebug.h"
156 #include "acinterp.h"
157 
158 #ifdef ACPI_DEBUGGER
159 
160 #define _COMPONENT          ACPI_CA_DEBUGGER
161         ACPI_MODULE_NAME    ("dbxface")
162 
163 
164 /* Local prototypes */
165 
166 static ACPI_STATUS
167 AcpiDbStartCommand (
168     ACPI_WALK_STATE         *WalkState,
169     ACPI_PARSE_OBJECT       *Op);
170 
171 #ifdef ACPI_OBSOLETE_FUNCTIONS
172 void
173 AcpiDbMethodEnd (
174     ACPI_WALK_STATE         *WalkState);
175 #endif
176 
177 
178 /*******************************************************************************
179  *
180  * FUNCTION:    AcpiDbStartCommand
181  *
182  * PARAMETERS:  WalkState       - Current walk
183  *              Op              - Current executing Op, from AML interpreter
184  *
185  * RETURN:      Status
186  *
187  * DESCRIPTION: Enter debugger command loop
188  *
189  ******************************************************************************/
190 
191 static ACPI_STATUS
192 AcpiDbStartCommand (
193     ACPI_WALK_STATE         *WalkState,
194     ACPI_PARSE_OBJECT       *Op)
195 {
196     ACPI_STATUS             Status;
197 
198 
199     /* TBD: [Investigate] are there namespace locking issues here? */
200 
201     /* AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); */
202 
203     /* Go into the command loop and await next user command */
204 
205 
206     AcpiGbl_MethodExecuting = TRUE;
207     Status = AE_CTRL_TRUE;
208 
209     while (Status == AE_CTRL_TRUE)
210     {
211         /* Notify the completion of the command */
212 
213         Status = AcpiOsNotifyCommandComplete ();
214         if (ACPI_FAILURE (Status))
215         {
216             goto ErrorExit;
217         }
218 
219         /* Wait the readiness of the command */
220 
221         Status = AcpiOsWaitCommandReady ();
222         if (ACPI_FAILURE (Status))
223         {
224             goto ErrorExit;
225         }
226 
227         Status = AcpiDbCommandDispatch (AcpiGbl_DbLineBuf, WalkState, Op);
228     }
229 
230     /* AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); */
231 
232 ErrorExit:
233     if (ACPI_FAILURE (Status) && Status != AE_CTRL_TERMINATE)
234     {
235         ACPI_EXCEPTION ((AE_INFO, Status,
236             "While parsing/handling command line"));
237     }
238     return (Status);
239 }
240 
241 
242 /*******************************************************************************
243  *
244  * FUNCTION:    AcpiDbSignalBreakPoint
245  *
246  * PARAMETERS:  WalkState       - Current walk
247  *
248  * RETURN:      Status
249  *
250  * DESCRIPTION: Called for AML_BREAKPOINT_OP
251  *
252  ******************************************************************************/
253 
254 void
255 AcpiDbSignalBreakPoint (
256     ACPI_WALK_STATE         *WalkState)
257 {
258 
259 #ifndef ACPI_APPLICATION
260     if (AcpiGbl_DbThreadId != AcpiOsGetThreadId ())
261     {
262         return;
263     }
264 #endif
265 
266     /*
267      * Set the single-step flag. This will cause the debugger (if present)
268      * to break to the console within the AML debugger at the start of the
269      * next AML instruction.
270      */
271     AcpiGbl_CmSingleStep = TRUE;
272     AcpiOsPrintf ("**break** Executed AML BreakPoint opcode\n");
273 }
274 
275 
276 /*******************************************************************************
277  *
278  * FUNCTION:    AcpiDbSingleStep
279  *
280  * PARAMETERS:  WalkState       - Current walk
281  *              Op              - Current executing op (from aml interpreter)
282  *              OpcodeClass     - Class of the current AML Opcode
283  *
284  * RETURN:      Status
285  *
286  * DESCRIPTION: Called just before execution of an AML opcode.
287  *
288  ******************************************************************************/
289 
290 ACPI_STATUS
291 AcpiDbSingleStep (
292     ACPI_WALK_STATE         *WalkState,
293     ACPI_PARSE_OBJECT       *Op,
294     UINT32                  OpcodeClass)
295 {
296     ACPI_PARSE_OBJECT       *Next;
297     ACPI_STATUS             Status = AE_OK;
298     UINT32                  OriginalDebugLevel;
299     ACPI_PARSE_OBJECT       *DisplayOp;
300     ACPI_PARSE_OBJECT       *ParentOp;
301     UINT32                  AmlOffset;
302 
303 
304     ACPI_FUNCTION_ENTRY ();
305 
306 
307 #ifndef ACPI_APPLICATION
308     if (AcpiGbl_DbThreadId != AcpiOsGetThreadId ())
309     {
310         return (AE_OK);
311     }
312 #endif
313 
314     /* Check the abort flag */
315 
316     if (AcpiGbl_AbortMethod)
317     {
318         AcpiGbl_AbortMethod = FALSE;
319         return (AE_ABORT_METHOD);
320     }
321 
322     AmlOffset = (UINT32) ACPI_PTR_DIFF (Op->Common.Aml,
323         WalkState->ParserState.AmlStart);
324 
325     /* Check for single-step breakpoint */
326 
327     if (WalkState->MethodBreakpoint &&
328        (WalkState->MethodBreakpoint <= AmlOffset))
329     {
330         /* Check if the breakpoint has been reached or passed */
331         /* Hit the breakpoint, resume single step, reset breakpoint */
332 
333         AcpiOsPrintf ("***Break*** at AML offset %X\n", AmlOffset);
334         AcpiGbl_CmSingleStep = TRUE;
335         AcpiGbl_StepToNextCall = FALSE;
336         WalkState->MethodBreakpoint = 0;
337     }
338 
339     /* Check for user breakpoint (Must be on exact Aml offset) */
340 
341     else if (WalkState->UserBreakpoint &&
342             (WalkState->UserBreakpoint == AmlOffset))
343     {
344         AcpiOsPrintf ("***UserBreakpoint*** at AML offset %X\n",
345             AmlOffset);
346         AcpiGbl_CmSingleStep = TRUE;
347         AcpiGbl_StepToNextCall = FALSE;
348         WalkState->MethodBreakpoint = 0;
349     }
350 
351     /*
352      * Check if this is an opcode that we are interested in --
353      * namely, opcodes that have arguments
354      */
355     if (Op->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
356     {
357         return (AE_OK);
358     }
359 
360     switch (OpcodeClass)
361     {
362     case AML_CLASS_UNKNOWN:
363     case AML_CLASS_ARGUMENT:    /* constants, literals, etc. do nothing */
364 
365         return (AE_OK);
366 
367     default:
368 
369         /* All other opcodes -- continue */
370         break;
371     }
372 
373     /*
374      * Under certain debug conditions, display this opcode and its operands
375      */
376     if ((AcpiGbl_DbOutputToFile)            ||
377         (AcpiGbl_CmSingleStep)              ||
378         (AcpiDbgLevel & ACPI_LV_PARSE))
379     {
380         if ((AcpiGbl_DbOutputToFile)        ||
381             (AcpiDbgLevel & ACPI_LV_PARSE))
382         {
383             AcpiOsPrintf ("\nAML Debug: Next AML Opcode to execute:\n");
384         }
385 
386         /*
387          * Display this op (and only this op - zero out the NEXT field
388          * temporarily, and disable parser trace output for the duration of
389          * the display because we don't want the extraneous debug output)
390          */
391         OriginalDebugLevel = AcpiDbgLevel;
392         AcpiDbgLevel &= ~(ACPI_LV_PARSE | ACPI_LV_FUNCTIONS);
393         Next = Op->Common.Next;
394         Op->Common.Next = NULL;
395 
396 
397         DisplayOp = Op;
398         ParentOp = Op->Common.Parent;
399         if (ParentOp)
400         {
401             if ((WalkState->ControlState) &&
402                 (WalkState->ControlState->Common.State ==
403                     ACPI_CONTROL_PREDICATE_EXECUTING))
404             {
405                 /*
406                  * We are executing the predicate of an IF or WHILE statement
407                  * Search upwards for the containing IF or WHILE so that the
408                  * entire predicate can be displayed.
409                  */
410                 while (ParentOp)
411                 {
412                     if ((ParentOp->Common.AmlOpcode == AML_IF_OP) ||
413                         (ParentOp->Common.AmlOpcode == AML_WHILE_OP))
414                     {
415                         DisplayOp = ParentOp;
416                         break;
417                     }
418                     ParentOp = ParentOp->Common.Parent;
419                 }
420             }
421             else
422             {
423                 while (ParentOp)
424                 {
425                     if ((ParentOp->Common.AmlOpcode == AML_IF_OP)     ||
426                         (ParentOp->Common.AmlOpcode == AML_ELSE_OP)   ||
427                         (ParentOp->Common.AmlOpcode == AML_SCOPE_OP)  ||
428                         (ParentOp->Common.AmlOpcode == AML_METHOD_OP) ||
429                         (ParentOp->Common.AmlOpcode == AML_WHILE_OP))
430                     {
431                         break;
432                     }
433                     DisplayOp = ParentOp;
434                     ParentOp = ParentOp->Common.Parent;
435                 }
436             }
437         }
438 
439         /* Now we can display it */
440 
441 #ifdef ACPI_DISASSEMBLER
442         AcpiDmDisassemble (WalkState, DisplayOp, ACPI_UINT32_MAX);
443 #endif
444 
445         if ((Op->Common.AmlOpcode == AML_IF_OP) ||
446             (Op->Common.AmlOpcode == AML_WHILE_OP))
447         {
448             if (WalkState->ControlState->Common.Value)
449             {
450                 AcpiOsPrintf ("Predicate = [True], IF block was executed\n");
451             }
452             else
453             {
454                 AcpiOsPrintf ("Predicate = [False], Skipping IF block\n");
455             }
456         }
457         else if (Op->Common.AmlOpcode == AML_ELSE_OP)
458         {
459             AcpiOsPrintf ("Predicate = [False], ELSE block was executed\n");
460         }
461 
462         /* Restore everything */
463 
464         Op->Common.Next = Next;
465         AcpiOsPrintf ("\n");
466         if ((AcpiGbl_DbOutputToFile)        ||
467             (AcpiDbgLevel & ACPI_LV_PARSE))
468         {
469             AcpiOsPrintf ("\n");
470         }
471         AcpiDbgLevel = OriginalDebugLevel;
472     }
473 
474     /* If we are not single stepping, just continue executing the method */
475 
476     if (!AcpiGbl_CmSingleStep)
477     {
478         return (AE_OK);
479     }
480 
481     /*
482      * If we are executing a step-to-call command,
483      * Check if this is a method call.
484      */
485     if (AcpiGbl_StepToNextCall)
486     {
487         if (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)
488         {
489             /* Not a method call, just keep executing */
490 
491             return (AE_OK);
492         }
493 
494         /* Found a method call, stop executing */
495 
496         AcpiGbl_StepToNextCall = FALSE;
497     }
498 
499     /*
500      * If the next opcode is a method call, we will "step over" it
501      * by default.
502      */
503     if (Op->Common.AmlOpcode == AML_INT_METHODCALL_OP)
504     {
505         /* Force no more single stepping while executing called method */
506 
507         AcpiGbl_CmSingleStep = FALSE;
508 
509         /*
510          * Set the breakpoint on/before the call, it will stop execution
511          * as soon as we return
512          */
513         WalkState->MethodBreakpoint = 1;  /* Must be non-zero! */
514     }
515 
516 
517     AcpiExExitInterpreter ();
518     Status = AcpiDbStartCommand (WalkState, Op);
519     AcpiExEnterInterpreter ();
520 
521     /* User commands complete, continue execution of the interrupted method */
522 
523     return (Status);
524 }
525 
526 
527 /*******************************************************************************
528  *
529  * FUNCTION:    AcpiInitializeDebugger
530  *
531  * PARAMETERS:  None
532  *
533  * RETURN:      Status
534  *
535  * DESCRIPTION: Init and start debugger
536  *
537  ******************************************************************************/
538 
539 ACPI_STATUS
540 AcpiInitializeDebugger (
541     void)
542 {
543     ACPI_STATUS             Status;
544 
545 
546     ACPI_FUNCTION_TRACE (AcpiInitializeDebugger);
547 
548 
549     /* Init globals */
550 
551     AcpiGbl_DbBuffer            = NULL;
552     AcpiGbl_DbFilename          = NULL;
553     AcpiGbl_DbOutputToFile      = FALSE;
554 
555     AcpiGbl_DbDebugLevel        = ACPI_LV_VERBOSITY2;
556     AcpiGbl_DbConsoleDebugLevel = ACPI_NORMAL_DEFAULT | ACPI_LV_TABLES;
557     AcpiGbl_DbOutputFlags       = ACPI_DB_CONSOLE_OUTPUT;
558 
559     AcpiGbl_DbOpt_NoIniMethods  = FALSE;
560 
561     AcpiGbl_DbBuffer = AcpiOsAllocate (ACPI_DEBUG_BUFFER_SIZE);
562     if (!AcpiGbl_DbBuffer)
563     {
564         return_ACPI_STATUS (AE_NO_MEMORY);
565     }
566     memset (AcpiGbl_DbBuffer, 0, ACPI_DEBUG_BUFFER_SIZE);
567 
568     /* Initial scope is the root */
569 
570     AcpiGbl_DbScopeBuf [0] = AML_ROOT_PREFIX;
571     AcpiGbl_DbScopeBuf [1] =  0;
572     AcpiGbl_DbScopeNode = AcpiGbl_RootNode;
573 
574     /* Initialize user commands loop */
575 
576     AcpiGbl_DbTerminateLoop = FALSE;
577 
578     /*
579      * If configured for multi-thread support, the debug executor runs in
580      * a separate thread so that the front end can be in another address
581      * space, environment, or even another machine.
582      */
583     if (AcpiGbl_DebuggerConfiguration & DEBUGGER_MULTI_THREADED)
584     {
585         /* These were created with one unit, grab it */
586 
587         Status = AcpiOsInitializeDebugger ();
588         if (ACPI_FAILURE (Status))
589         {
590             AcpiOsPrintf ("Could not get debugger mutex\n");
591             return_ACPI_STATUS (Status);
592         }
593 
594         /* Create the debug execution thread to execute commands */
595 
596         AcpiGbl_DbThreadsTerminated = FALSE;
597         Status = AcpiOsExecute (OSL_DEBUGGER_MAIN_THREAD,
598             AcpiDbExecuteThread, NULL);
599         if (ACPI_FAILURE (Status))
600         {
601             ACPI_EXCEPTION ((AE_INFO, Status,
602                 "Could not start debugger thread"));
603             AcpiGbl_DbThreadsTerminated = TRUE;
604             return_ACPI_STATUS (Status);
605         }
606     }
607     else
608     {
609         AcpiGbl_DbThreadId = AcpiOsGetThreadId ();
610     }
611 
612     return_ACPI_STATUS (AE_OK);
613 }
614 
615 ACPI_EXPORT_SYMBOL (AcpiInitializeDebugger)
616 
617 
618 /*******************************************************************************
619  *
620  * FUNCTION:    AcpiTerminateDebugger
621  *
622  * PARAMETERS:  None
623  *
624  * RETURN:      None
625  *
626  * DESCRIPTION: Stop debugger
627  *
628  ******************************************************************************/
629 
630 void
631 AcpiTerminateDebugger (
632     void)
633 {
634 
635     /* Terminate the AML Debugger */
636 
637     AcpiGbl_DbTerminateLoop = TRUE;
638 
639     if (AcpiGbl_DebuggerConfiguration & DEBUGGER_MULTI_THREADED)
640     {
641         /* Wait the AML Debugger threads */
642 
643         while (!AcpiGbl_DbThreadsTerminated)
644         {
645             AcpiOsSleep (100);
646         }
647 
648         AcpiOsTerminateDebugger ();
649     }
650 
651     if (AcpiGbl_DbBuffer)
652     {
653         AcpiOsFree (AcpiGbl_DbBuffer);
654         AcpiGbl_DbBuffer = NULL;
655     }
656 
657     /* Ensure that debug output is now disabled */
658 
659     AcpiGbl_DbOutputFlags = ACPI_DB_DISABLE_OUTPUT;
660 }
661 
662 ACPI_EXPORT_SYMBOL (AcpiTerminateDebugger)
663 
664 
665 /*******************************************************************************
666  *
667  * FUNCTION:    AcpiSetDebuggerThreadId
668  *
669  * PARAMETERS:  ThreadId        - Debugger thread ID
670  *
671  * RETURN:      None
672  *
673  * DESCRIPTION: Set debugger thread ID
674  *
675  ******************************************************************************/
676 
677 void
678 AcpiSetDebuggerThreadId (
679     ACPI_THREAD_ID          ThreadId)
680 {
681     AcpiGbl_DbThreadId = ThreadId;
682 }
683 
684 ACPI_EXPORT_SYMBOL (AcpiSetDebuggerThreadId)
685 
686 #endif /* ACPI_DEBUGGER */
687