FreeBSD/Linux Kernel Cross Reference
sys/contrib/dev/acpica/components/debugger/dbxface.c

     /*******************************************************************************
      *
      * Module Name: dbxface - AML Debugger external interfaces
      *
      ******************************************************************************/
     
     /******************************************************************************
      *
      * 1. Copyright Notice
     *
     * Some or all of this work - Copyright (c) 1999 - 2022, Intel Corp.
     * All rights reserved.
     *
     * 2. License
     *
     * 2.1. This is your license from Intel Corp. under its intellectual property
     * rights. You may have additional license terms from the party that provided
     * you this software, covering your right to use that party's intellectual
     * property rights.
     *
     * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
     * copy of the source code appearing in this file ("Covered Code") an
     * irrevocable, perpetual, worldwide license under Intel's copyrights in the
     * base code distributed originally by Intel ("Original Intel Code") to copy,
     * make derivatives, distribute, use and display any portion of the Covered
     * Code in any form, with the right to sublicense such rights; and
     *
     * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
     * license (with the right to sublicense), under only those claims of Intel
     * patents that are infringed by the Original Intel Code, to make, use, sell,
     * offer to sell, and import the Covered Code and derivative works thereof
     * solely to the minimum extent necessary to exercise the above copyright
     * license, and in no event shall the patent license extend to any additions
     * to or modifications of the Original Intel Code. No other license or right
     * is granted directly or by implication, estoppel or otherwise;
     *
     * The above copyright and patent license is granted only if the following
     * conditions are met:
     *
     * 3. Conditions
     *
     * 3.1. Redistribution of Source with Rights to Further Distribute Source.
     * Redistribution of source code of any substantial portion of the Covered
     * Code or modification with rights to further distribute source must include
     * the above Copyright Notice, the above License, this list of Conditions,
     * and the following Disclaimer and Export Compliance provision. In addition,
     * Licensee must cause all Covered Code to which Licensee contributes to
     * contain a file documenting the changes Licensee made to create that Covered
     * Code and the date of any change. Licensee must include in that file the
     * documentation of any changes made by any predecessor Licensee. Licensee
     * must include a prominent statement that the modification is derived,
     * directly or indirectly, from Original Intel Code.
     *
     * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
     * Redistribution of source code of any substantial portion of the Covered
     * Code or modification without rights to further distribute source must
     * include the following Disclaimer and Export Compliance provision in the
     * documentation and/or other materials provided with distribution. In
     * addition, Licensee may not authorize further sublicense of source of any
     * portion of the Covered Code, and must include terms to the effect that the
     * license from Licensee to its licensee is limited to the intellectual
     * property embodied in the software Licensee provides to its licensee, and
     * not to intellectual property embodied in modifications its licensee may
     * make.
     *
     * 3.3. Redistribution of Executable. Redistribution in executable form of any
     * substantial portion of the Covered Code or modification must reproduce the
     * above Copyright Notice, and the following Disclaimer and Export Compliance
     * provision in the documentation and/or other materials provided with the
     * distribution.
     *
     * 3.4. Intel retains all right, title, and interest in and to the Original
     * Intel Code.
     *
     * 3.5. Neither the name Intel nor any other trademark owned or controlled by
     * Intel shall be used in advertising or otherwise to promote the sale, use or
     * other dealings in products derived from or relating to the Covered Code
     * without prior written authorization from Intel.
     *
     * 4. Disclaimer and Export Compliance
     *
     * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
     * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
     * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
     * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
     * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
     * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
     * PARTICULAR PURPOSE.
     *
     * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
     * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
     * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
     * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
     * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
     * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
     * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
     * LIMITED REMEDY.
     *
     * 4.3. Licensee shall not export, either directly or indirectly, any of this
    * software or system incorporating such software without first obtaining any
    * required license or other approval from the U. S. Department of Commerce or
    * any other agency or department of the United States Government. In the
    * event Licensee exports any such software from the United States or
    * re-exports any such software from a foreign destination, Licensee shall
    * ensure that the distribution and export/re-export of the software is in
    * compliance with all laws, regulations, orders, or other restrictions of the
    * U.S. Export Administration Regulations. Licensee agrees that neither it nor
    * any of its subsidiaries will export/re-export any technical data, process,
    * software, or service, directly or indirectly, to any country for which the
    * United States government or any agency thereof requires an export license,
    * other governmental approval, or letter of assurance, without first obtaining
    * such license, approval or letter.
    *
    *****************************************************************************
    *
    * Alternatively, you may choose to be licensed under the terms of the
    * following license:
    *
    * Redistribution and use in source and binary forms, with or without
    * modification, are permitted provided that the following conditions
    * are met:
    * 1. Redistributions of source code must retain the above copyright
    *    notice, this list of conditions, and the following disclaimer,
    *    without modification.
    * 2. Redistributions in binary form must reproduce at minimum a disclaimer
    *    substantially similar to the "NO WARRANTY" disclaimer below
    *    ("Disclaimer") and any redistribution must be conditioned upon
    *    including a substantially similar Disclaimer requirement for further
    *    binary redistribution.
    * 3. Neither the names of the above-listed copyright holders nor the names
    *    of any contributors may be used to endorse or promote products derived
    *    from this software without specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    * Alternatively, you may choose to be licensed under the terms of the
    * GNU General Public License ("GPL") version 2 as published by the Free
    * Software Foundation.
    *
    *****************************************************************************/
   
   #include <contrib/dev/acpica/include/acpi.h>
   #include <contrib/dev/acpica/include/accommon.h>
   #include <contrib/dev/acpica/include/amlcode.h>
   #include <contrib/dev/acpica/include/acdebug.h>
   #include <contrib/dev/acpica/include/acinterp.h>
   #include <contrib/dev/acpica/include/acparser.h>
   
   
   #define _COMPONENT          ACPI_CA_DEBUGGER
           ACPI_MODULE_NAME    ("dbxface")
   
   
   /* Local prototypes */
   
   static ACPI_STATUS
   AcpiDbStartCommand (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       *Op);
   
   #ifdef ACPI_OBSOLETE_FUNCTIONS
   void
   AcpiDbMethodEnd (
       ACPI_WALK_STATE         *WalkState);
   #endif
   
   #ifdef ACPI_DISASSEMBLER
   static ACPI_PARSE_OBJECT *
   AcpiDbGetDisplayOp (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       *Op);
   #endif
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDbStartCommand
    *
    * PARAMETERS:  WalkState       - Current walk
    *              Op              - Current executing Op, from AML interpreter
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Enter debugger command loop
    *
    ******************************************************************************/
   
   static ACPI_STATUS
   AcpiDbStartCommand (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       *Op)
   {
       ACPI_STATUS             Status;
   
   
       /* TBD: [Investigate] are there namespace locking issues here? */
   
       /* AcpiUtReleaseMutex (ACPI_MTX_NAMESPACE); */
   
       /* Go into the command loop and await next user command */
   
   
       AcpiGbl_MethodExecuting = TRUE;
       Status = AE_CTRL_TRUE;
   
       while (Status == AE_CTRL_TRUE)
       {
           /* Notify the completion of the command */
   
           Status = AcpiOsNotifyCommandComplete ();
           if (ACPI_FAILURE (Status))
           {
               goto ErrorExit;
           }
   
           /* Wait the readiness of the command */
   
           Status = AcpiOsWaitCommandReady ();
           if (ACPI_FAILURE (Status))
           {
               goto ErrorExit;
           }
   
           Status = AcpiDbCommandDispatch (AcpiGbl_DbLineBuf, WalkState, Op);
       }
   
       /* AcpiUtAcquireMutex (ACPI_MTX_NAMESPACE); */
   
   ErrorExit:
       if (ACPI_FAILURE (Status) && Status != AE_CTRL_TERMINATE)
       {
           ACPI_EXCEPTION ((AE_INFO, Status,
               "While parsing/handling command line"));
       }
       return (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDbSignalBreakPoint
    *
    * PARAMETERS:  WalkState       - Current walk
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Called for AML_BREAKPOINT_OP
    *
    ******************************************************************************/
   
   void
   AcpiDbSignalBreakPoint (
       ACPI_WALK_STATE         *WalkState)
   {
   
   #ifndef ACPI_APPLICATION
       if (AcpiGbl_DbThreadId != AcpiOsGetThreadId ())
       {
           return;
       }
   #endif
   
       /*
        * Set the single-step flag. This will cause the debugger (if present)
        * to break to the console within the AML debugger at the start of the
        * next AML instruction.
        */
       AcpiGbl_CmSingleStep = TRUE;
       AcpiOsPrintf ("**break** Executed AML BreakPoint opcode\n");
   }
   
   
   #ifdef ACPI_DISASSEMBLER
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDbGetDisplayOp
    *
    * PARAMETERS:  WalkState       - Current walk
    *              Op              - Current executing op (from aml interpreter)
    *
    * RETURN:      Opcode to display
    *
    * DESCRIPTION: Find the opcode to display during single stepping
    *
    ******************************************************************************/
   
   static ACPI_PARSE_OBJECT *
   AcpiDbGetDisplayOp (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       *Op)
   {
       ACPI_PARSE_OBJECT       *DisplayOp;
       ACPI_PARSE_OBJECT       *ParentOp;
   
       DisplayOp = Op;
       ParentOp = Op->Common.Parent;
       if (ParentOp)
       {
           if ((WalkState->ControlState) &&
               (WalkState->ControlState->Common.State ==
                   ACPI_CONTROL_PREDICATE_EXECUTING))
           {
               /*
                * We are executing the predicate of an IF or WHILE statement
                * Search upwards for the containing IF or WHILE so that the
                * entire predicate can be displayed.
                */
               while (ParentOp)
               {
                   if ((ParentOp->Common.AmlOpcode == AML_IF_OP) ||
                       (ParentOp->Common.AmlOpcode == AML_WHILE_OP))
                   {
                       DisplayOp = ParentOp;
                       break;
                   }
                   ParentOp = ParentOp->Common.Parent;
               }
           }
           else
           {
               while (ParentOp)
               {
                   if ((ParentOp->Common.AmlOpcode == AML_IF_OP)     ||
                       (ParentOp->Common.AmlOpcode == AML_ELSE_OP)   ||
                       (ParentOp->Common.AmlOpcode == AML_SCOPE_OP)  ||
                       (ParentOp->Common.AmlOpcode == AML_METHOD_OP) ||
                       (ParentOp->Common.AmlOpcode == AML_WHILE_OP))
                   {
                       break;
                   }
                   DisplayOp = ParentOp;
                   ParentOp = ParentOp->Common.Parent;
               }
           }
       }
       return DisplayOp;
   }
   #endif
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiDbSingleStep
    *
    * PARAMETERS:  WalkState       - Current walk
    *              Op              - Current executing op (from aml interpreter)
    *              OpcodeClass     - Class of the current AML Opcode
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Called just before execution of an AML opcode.
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiDbSingleStep (
       ACPI_WALK_STATE         *WalkState,
       ACPI_PARSE_OBJECT       *Op,
       UINT32                  OpcodeClass)
   {
       ACPI_PARSE_OBJECT       *Next;
       ACPI_STATUS             Status = AE_OK;
       UINT32                  OriginalDebugLevel;
       UINT32                  AmlOffset;
   
   
       ACPI_FUNCTION_ENTRY ();
   
   
   #ifndef ACPI_APPLICATION
       if (AcpiGbl_DbThreadId != AcpiOsGetThreadId ())
       {
           return (AE_OK);
       }
   #endif
   
       /* Check the abort flag */
   
       if (AcpiGbl_AbortMethod)
       {
           AcpiGbl_AbortMethod = FALSE;
           return (AE_ABORT_METHOD);
       }
   
       AmlOffset = (UINT32) ACPI_PTR_DIFF (Op->Common.Aml,
           WalkState->ParserState.AmlStart);
   
       /* Check for single-step breakpoint */
   
       if (WalkState->MethodBreakpoint &&
          (WalkState->MethodBreakpoint <= AmlOffset))
       {
           /* Check if the breakpoint has been reached or passed */
           /* Hit the breakpoint, resume single step, reset breakpoint */
   
           AcpiOsPrintf ("***Break*** at AML offset %X\n", AmlOffset);
           AcpiGbl_CmSingleStep = TRUE;
           AcpiGbl_StepToNextCall = FALSE;
           WalkState->MethodBreakpoint = 0;
       }
   
       /* Check for user breakpoint (Must be on exact Aml offset) */
   
       else if (WalkState->UserBreakpoint &&
               (WalkState->UserBreakpoint == AmlOffset))
       {
           AcpiOsPrintf ("***UserBreakpoint*** at AML offset %X\n",
               AmlOffset);
           AcpiGbl_CmSingleStep = TRUE;
           AcpiGbl_StepToNextCall = FALSE;
           WalkState->MethodBreakpoint = 0;
       }
   
       /*
        * Check if this is an opcode that we are interested in --
        * namely, opcodes that have arguments
        */
       if (Op->Common.AmlOpcode == AML_INT_NAMEDFIELD_OP)
       {
           return (AE_OK);
       }
   
       switch (OpcodeClass)
       {
       case AML_CLASS_UNKNOWN:
       case AML_CLASS_ARGUMENT:    /* constants, literals, etc. do nothing */
   
           return (AE_OK);
   
       default:
   
           /* All other opcodes -- continue */
           break;
       }
   
       /*
        * Under certain debug conditions, display this opcode and its operands
        */
       if ((AcpiGbl_DbOutputToFile)            ||
           (AcpiGbl_CmSingleStep)              ||
           (AcpiDbgLevel & ACPI_LV_PARSE))
       {
           if ((AcpiGbl_DbOutputToFile)        ||
               (AcpiDbgLevel & ACPI_LV_PARSE))
           {
               AcpiOsPrintf ("\nAML Debug: Next AML Opcode to execute:\n");
           }
   
           /*
            * Display this op (and only this op - zero out the NEXT field
            * temporarily, and disable parser trace output for the duration of
            * the display because we don't want the extraneous debug output)
            */
           OriginalDebugLevel = AcpiDbgLevel;
           AcpiDbgLevel &= ~(ACPI_LV_PARSE | ACPI_LV_FUNCTIONS);
           Next = Op->Common.Next;
           Op->Common.Next = NULL;
   
           /* Now we can disassemble and display it */
   
   #ifdef ACPI_DISASSEMBLER
           AcpiDmDisassemble (WalkState, AcpiDbGetDisplayOp (WalkState, Op),
               ACPI_UINT32_MAX);
   #else
           /*
            * The AML Disassembler is not configured - at least we can
            * display the opcode value and name
            */
           AcpiOsPrintf ("AML Opcode: %4.4X  %s\n", Op->Common.AmlOpcode,
               AcpiPsGetOpcodeName (Op->Common.AmlOpcode));
   #endif
   
           if ((Op->Common.AmlOpcode == AML_IF_OP) ||
               (Op->Common.AmlOpcode == AML_WHILE_OP))
           {
               if (WalkState->ControlState->Common.Value)
               {
                   AcpiOsPrintf ("Predicate = [True], IF block was executed\n");
               }
               else
               {
                   AcpiOsPrintf ("Predicate = [False], Skipping IF block\n");
               }
           }
           else if (Op->Common.AmlOpcode == AML_ELSE_OP)
           {
               AcpiOsPrintf ("Predicate = [False], ELSE block was executed\n");
           }
   
           /* Restore everything */
   
           Op->Common.Next = Next;
           AcpiOsPrintf ("\n");
           if ((AcpiGbl_DbOutputToFile)        ||
               (AcpiDbgLevel & ACPI_LV_PARSE))
           {
               AcpiOsPrintf ("\n");
           }
           AcpiDbgLevel = OriginalDebugLevel;
       }
   
       /* If we are not single stepping, just continue executing the method */
   
       if (!AcpiGbl_CmSingleStep)
       {
           return (AE_OK);
       }
   
       /*
        * If we are executing a step-to-call command,
        * Check if this is a method call.
        */
       if (AcpiGbl_StepToNextCall)
       {
           if (Op->Common.AmlOpcode != AML_INT_METHODCALL_OP)
           {
               /* Not a method call, just keep executing */
   
               return (AE_OK);
           }
   
           /* Found a method call, stop executing */
   
           AcpiGbl_StepToNextCall = FALSE;
       }
   
       /*
        * If the next opcode is a method call, we will "step over" it
        * by default.
        */
       if (Op->Common.AmlOpcode == AML_INT_METHODCALL_OP)
       {
           /* Force no more single stepping while executing called method */
   
           AcpiGbl_CmSingleStep = FALSE;
   
           /*
            * Set the breakpoint on/before the call, it will stop execution
            * as soon as we return
            */
           WalkState->MethodBreakpoint = 1;  /* Must be non-zero! */
       }
   
   
       AcpiExExitInterpreter ();
       Status = AcpiDbStartCommand (WalkState, Op);
       AcpiExEnterInterpreter ();
   
       /* User commands complete, continue execution of the interrupted method */
   
       return (Status);
   }
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiInitializeDebugger
    *
    * PARAMETERS:  None
    *
    * RETURN:      Status
    *
    * DESCRIPTION: Init and start debugger
    *
    ******************************************************************************/
   
   ACPI_STATUS
   AcpiInitializeDebugger (
       void)
   {
       ACPI_STATUS             Status;
   
   
       ACPI_FUNCTION_TRACE (AcpiInitializeDebugger);
   
   
       /* Init globals */
   
       AcpiGbl_DbBuffer            = NULL;
       AcpiGbl_DbFilename          = NULL;
       AcpiGbl_DbOutputToFile      = FALSE;
   
       AcpiGbl_DbDebugLevel        = ACPI_LV_VERBOSITY2;
       AcpiGbl_DbConsoleDebugLevel = ACPI_NORMAL_DEFAULT | ACPI_LV_TABLES;
       AcpiGbl_DbOutputFlags       = ACPI_DB_CONSOLE_OUTPUT;
   
       AcpiGbl_DbOpt_NoIniMethods  = FALSE;
       AcpiGbl_DbOpt_NoRegionSupport = FALSE;
   
       AcpiGbl_DbBuffer = AcpiOsAllocate (ACPI_DEBUG_BUFFER_SIZE);
       if (!AcpiGbl_DbBuffer)
       {
           return_ACPI_STATUS (AE_NO_MEMORY);
       }
       memset (AcpiGbl_DbBuffer, 0, ACPI_DEBUG_BUFFER_SIZE);
   
       /* Initial scope is the root */
   
       AcpiGbl_DbScopeBuf [0] = AML_ROOT_PREFIX;
       AcpiGbl_DbScopeBuf [1] =  0;
       AcpiGbl_DbScopeNode = AcpiGbl_RootNode;
   
       /* Initialize user commands loop */
   
       AcpiGbl_DbTerminateLoop = FALSE;
   
       /*
        * If configured for multi-thread support, the debug executor runs in
        * a separate thread so that the front end can be in another address
        * space, environment, or even another machine.
        */
       if (AcpiGbl_DebuggerConfiguration & DEBUGGER_MULTI_THREADED)
       {
           /* These were created with one unit, grab it */
   
           Status = AcpiOsInitializeDebugger ();
           if (ACPI_FAILURE (Status))
           {
               AcpiOsPrintf ("Could not get debugger mutex\n");
               return_ACPI_STATUS (Status);
           }
   
           /* Create the debug execution thread to execute commands */
   
           AcpiGbl_DbThreadsTerminated = FALSE;
           Status = AcpiOsExecute (OSL_DEBUGGER_MAIN_THREAD,
               AcpiDbExecuteThread, NULL);
           if (ACPI_FAILURE (Status))
           {
               ACPI_EXCEPTION ((AE_INFO, Status,
                   "Could not start debugger thread"));
               AcpiGbl_DbThreadsTerminated = TRUE;
               return_ACPI_STATUS (Status);
           }
       }
       else
       {
           AcpiGbl_DbThreadId = AcpiOsGetThreadId ();
       }
   
       return_ACPI_STATUS (AE_OK);
   }
   
   ACPI_EXPORT_SYMBOL (AcpiInitializeDebugger)
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiTerminateDebugger
    *
    * PARAMETERS:  None
    *
    * RETURN:      None
    *
    * DESCRIPTION: Stop debugger
    *
    ******************************************************************************/
   
   void
   AcpiTerminateDebugger (
       void)
   {
   
       /* Terminate the AML Debugger */
   
       AcpiGbl_DbTerminateLoop = TRUE;
   
       if (AcpiGbl_DebuggerConfiguration & DEBUGGER_MULTI_THREADED)
       {
           /* Wait the AML Debugger threads */
   
           while (!AcpiGbl_DbThreadsTerminated)
           {
               AcpiOsSleep (100);
           }
   
           AcpiOsTerminateDebugger ();
       }
   
       if (AcpiGbl_DbBuffer)
       {
           AcpiOsFree (AcpiGbl_DbBuffer);
           AcpiGbl_DbBuffer = NULL;
       }
   
       /* Ensure that debug output is now disabled */
   
       AcpiGbl_DbOutputFlags = ACPI_DB_DISABLE_OUTPUT;
   }
   
   ACPI_EXPORT_SYMBOL (AcpiTerminateDebugger)
   
   
   /*******************************************************************************
    *
    * FUNCTION:    AcpiSetDebuggerThreadId
    *
    * PARAMETERS:  ThreadId        - Debugger thread ID
    *
    * RETURN:      None
    *
    * DESCRIPTION: Set debugger thread ID
    *
    ******************************************************************************/
   
   void
   AcpiSetDebuggerThreadId (
       ACPI_THREAD_ID          ThreadId)
   {
       AcpiGbl_DbThreadId = ThreadId;
   }
   
   ACPI_EXPORT_SYMBOL (AcpiSetDebuggerThreadId)

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