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  1. /******************************************************************************
  2.  *
  3.  * Module Name: dbhistry - debugger HISTORY command
  4.  *
  5.  *****************************************************************************/
  6.  
  7. /******************************************************************************
  8.  *
  9.  * 1. Copyright Notice
  10.  *
  11.  * Some or all of this work - Copyright (c) 1999 - 2011, 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.  
  117. #include "acpi.h"
  118. #include "accommon.h"
  119. #include "acdebug.h"
  120.  
  121. #ifdef ACPI_DEBUGGER
  122.  
  123. #define _COMPONENT          ACPI_CA_DEBUGGER
  124.         ACPI_MODULE_NAME    ("dbhistry")
  125.  
  126.  
  127. #define HI_NO_HISTORY       0
  128. #define HI_RECORD_HISTORY   1
  129. #define HISTORY_SIZE        20
  130.  
  131.  
  132. typedef struct HistoryInfo
  133. {
  134.     char                    Command[80];
  135.     UINT32                  CmdNum;
  136.  
  137. } HISTORY_INFO;
  138.  
  139.  
  140. static HISTORY_INFO         AcpiGbl_HistoryBuffer[HISTORY_SIZE];
  141. static UINT16               AcpiGbl_LoHistory = 0;
  142. static UINT16               AcpiGbl_NumHistory = 0;
  143. static UINT16               AcpiGbl_NextHistoryIndex = 0;
  144. static UINT32               AcpiGbl_NextCmdNum = 1;
  145.  
  146.  
  147. /*******************************************************************************
  148.  *
  149.  * FUNCTION:    AcpiDbAddToHistory
  150.  *
  151.  * PARAMETERS:  CommandLine     - Command to add
  152.  *
  153.  * RETURN:      None
  154.  *
  155.  * DESCRIPTION: Add a command line to the history buffer.
  156.  *
  157.  ******************************************************************************/
  158.  
  159. void
  160. AcpiDbAddToHistory (
  161.     char                    *CommandLine)
  162. {
  163.  
  164.     /* Put command into the next available slot */
  165.  
  166.     ACPI_STRCPY (AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command,
  167.         CommandLine);
  168.  
  169.     AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].CmdNum = AcpiGbl_NextCmdNum;
  170.  
  171.     /* Adjust indexes */
  172.  
  173.     if ((AcpiGbl_NumHistory == HISTORY_SIZE) &&
  174.         (AcpiGbl_NextHistoryIndex == AcpiGbl_LoHistory))
  175.     {
  176.         AcpiGbl_LoHistory++;
  177.         if (AcpiGbl_LoHistory >= HISTORY_SIZE)
  178.         {
  179.             AcpiGbl_LoHistory = 0;
  180.         }
  181.     }
  182.  
  183.     AcpiGbl_NextHistoryIndex++;
  184.     if (AcpiGbl_NextHistoryIndex >= HISTORY_SIZE)
  185.     {
  186.         AcpiGbl_NextHistoryIndex = 0;
  187.     }
  188.  
  189.     AcpiGbl_NextCmdNum++;
  190.     if (AcpiGbl_NumHistory < HISTORY_SIZE)
  191.     {
  192.         AcpiGbl_NumHistory++;
  193.     }
  194. }
  195.  
  196.  
  197. /*******************************************************************************
  198.  *
  199.  * FUNCTION:    AcpiDbDisplayHistory
  200.  *
  201.  * PARAMETERS:  None
  202.  *
  203.  * RETURN:      None
  204.  *
  205.  * DESCRIPTION: Display the contents of the history buffer
  206.  *
  207.  ******************************************************************************/
  208.  
  209. void
  210. AcpiDbDisplayHistory (
  211.     void)
  212. {
  213.     UINT32                  i;
  214.     UINT16                  HistoryIndex;
  215.  
  216.  
  217.     HistoryIndex = AcpiGbl_LoHistory;
  218.  
  219.     /* Dump entire history buffer */
  220.  
  221.     for (i = 0; i < AcpiGbl_NumHistory; i++)
  222.     {
  223.         AcpiOsPrintf ("%ld  %s\n", AcpiGbl_HistoryBuffer[HistoryIndex].CmdNum,
  224.                                    AcpiGbl_HistoryBuffer[HistoryIndex].Command);
  225.  
  226.         HistoryIndex++;
  227.         if (HistoryIndex >= HISTORY_SIZE)
  228.         {
  229.             HistoryIndex = 0;
  230.         }
  231.     }
  232. }
  233.  
  234.  
  235. /*******************************************************************************
  236.  *
  237.  * FUNCTION:    AcpiDbGetFromHistory
  238.  *
  239.  * PARAMETERS:  CommandNumArg           - String containing the number of the
  240.  *                                        command to be retrieved
  241.  *
  242.  * RETURN:      Pointer to the retrieved command. Null on error.
  243.  *
  244.  * DESCRIPTION: Get a command from the history buffer
  245.  *
  246.  ******************************************************************************/
  247.  
  248. char *
  249. AcpiDbGetFromHistory (
  250.     char                    *CommandNumArg)
  251. {
  252.     UINT32                  i;
  253.     UINT16                  HistoryIndex;
  254.     UINT32                  CmdNum;
  255.  
  256.  
  257.     if (CommandNumArg == NULL)
  258.     {
  259.         CmdNum = AcpiGbl_NextCmdNum - 1;
  260.     }
  261.  
  262.     else
  263.     {
  264.         CmdNum = ACPI_STRTOUL (CommandNumArg, NULL, 0);
  265.     }
  266.  
  267.     /* Search history buffer */
  268.  
  269.     HistoryIndex = AcpiGbl_LoHistory;
  270.     for (i = 0; i < AcpiGbl_NumHistory; i++)
  271.     {
  272.         if (AcpiGbl_HistoryBuffer[HistoryIndex].CmdNum == CmdNum)
  273.         {
  274.             /* Found the commnad, return it */
  275.  
  276.             return (AcpiGbl_HistoryBuffer[HistoryIndex].Command);
  277.         }
  278.  
  279.  
  280.         HistoryIndex++;
  281.         if (HistoryIndex >= HISTORY_SIZE)
  282.         {
  283.             HistoryIndex = 0;
  284.         }
  285.     }
  286.  
  287.     AcpiOsPrintf ("Invalid history number: %u\n", HistoryIndex);
  288.     return (NULL);
  289. }
  290.  
  291. #endif /* ACPI_DEBUGGER */
  292.  
  293.