| /****************************************************************************** |
| * |
| * Module Name: dbhistry - debugger HISTORY command |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2016, Intel Corp. |
| * All rights reserved. |
| * |
| * 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. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * 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 MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. |
| */ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acdebug.h" |
| |
| |
| #define _COMPONENT ACPI_CA_DEBUGGER |
| ACPI_MODULE_NAME ("dbhistry") |
| |
| |
| #define HI_NO_HISTORY 0 |
| #define HI_RECORD_HISTORY 1 |
| #define HISTORY_SIZE 40 |
| |
| |
| typedef struct HistoryInfo |
| { |
| char *Command; |
| UINT32 CmdNum; |
| |
| } HISTORY_INFO; |
| |
| |
| static HISTORY_INFO AcpiGbl_HistoryBuffer[HISTORY_SIZE]; |
| static UINT16 AcpiGbl_LoHistory = 0; |
| static UINT16 AcpiGbl_NumHistory = 0; |
| static UINT16 AcpiGbl_NextHistoryIndex = 0; |
| UINT32 AcpiGbl_NextCmdNum = 1; |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDbAddToHistory |
| * |
| * PARAMETERS: CommandLine - Command to add |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Add a command line to the history buffer. |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiDbAddToHistory ( |
| char *CommandLine) |
| { |
| UINT16 CmdLen; |
| UINT16 BufferLen; |
| |
| /* Put command into the next available slot */ |
| |
| CmdLen = (UINT16) strlen (CommandLine); |
| if (!CmdLen) |
| { |
| return; |
| } |
| |
| if (AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command != NULL) |
| { |
| BufferLen = (UINT16) strlen ( |
| AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command); |
| |
| if (CmdLen > BufferLen) |
| { |
| AcpiOsFree (AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex]. |
| Command); |
| AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command = |
| AcpiOsAllocate (CmdLen + 1); |
| } |
| } |
| else |
| { |
| AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command = |
| AcpiOsAllocate (CmdLen + 1); |
| } |
| |
| strcpy (AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].Command, |
| CommandLine); |
| |
| AcpiGbl_HistoryBuffer[AcpiGbl_NextHistoryIndex].CmdNum = |
| AcpiGbl_NextCmdNum; |
| |
| /* Adjust indexes */ |
| |
| if ((AcpiGbl_NumHistory == HISTORY_SIZE) && |
| (AcpiGbl_NextHistoryIndex == AcpiGbl_LoHistory)) |
| { |
| AcpiGbl_LoHistory++; |
| if (AcpiGbl_LoHistory >= HISTORY_SIZE) |
| { |
| AcpiGbl_LoHistory = 0; |
| } |
| } |
| |
| AcpiGbl_NextHistoryIndex++; |
| if (AcpiGbl_NextHistoryIndex >= HISTORY_SIZE) |
| { |
| AcpiGbl_NextHistoryIndex = 0; |
| } |
| |
| AcpiGbl_NextCmdNum++; |
| if (AcpiGbl_NumHistory < HISTORY_SIZE) |
| { |
| AcpiGbl_NumHistory++; |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDbDisplayHistory |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Display the contents of the history buffer |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiDbDisplayHistory ( |
| void) |
| { |
| UINT32 i; |
| UINT16 HistoryIndex; |
| |
| |
| HistoryIndex = AcpiGbl_LoHistory; |
| |
| /* Dump entire history buffer */ |
| |
| for (i = 0; i < AcpiGbl_NumHistory; i++) |
| { |
| if (AcpiGbl_HistoryBuffer[HistoryIndex].Command) |
| { |
| AcpiOsPrintf ("%3ld %s\n", |
| AcpiGbl_HistoryBuffer[HistoryIndex].CmdNum, |
| AcpiGbl_HistoryBuffer[HistoryIndex].Command); |
| } |
| |
| HistoryIndex++; |
| if (HistoryIndex >= HISTORY_SIZE) |
| { |
| HistoryIndex = 0; |
| } |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDbGetFromHistory |
| * |
| * PARAMETERS: CommandNumArg - String containing the number of the |
| * command to be retrieved |
| * |
| * RETURN: Pointer to the retrieved command. Null on error. |
| * |
| * DESCRIPTION: Get a command from the history buffer |
| * |
| ******************************************************************************/ |
| |
| char * |
| AcpiDbGetFromHistory ( |
| char *CommandNumArg) |
| { |
| UINT32 CmdNum; |
| |
| |
| if (CommandNumArg == NULL) |
| { |
| CmdNum = AcpiGbl_NextCmdNum - 1; |
| } |
| |
| else |
| { |
| CmdNum = strtoul (CommandNumArg, NULL, 0); |
| } |
| |
| return (AcpiDbGetHistoryByIndex (CmdNum)); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiDbGetHistoryByIndex |
| * |
| * PARAMETERS: CmdNum - Index of the desired history entry. |
| * Values are 0...(AcpiGbl_NextCmdNum - 1) |
| * |
| * RETURN: Pointer to the retrieved command. Null on error. |
| * |
| * DESCRIPTION: Get a command from the history buffer |
| * |
| ******************************************************************************/ |
| |
| char * |
| AcpiDbGetHistoryByIndex ( |
| UINT32 CmdNum) |
| { |
| UINT32 i; |
| UINT16 HistoryIndex; |
| |
| |
| /* Search history buffer */ |
| |
| HistoryIndex = AcpiGbl_LoHistory; |
| for (i = 0; i < AcpiGbl_NumHistory; i++) |
| { |
| if (AcpiGbl_HistoryBuffer[HistoryIndex].CmdNum == CmdNum) |
| { |
| /* Found the command, return it */ |
| |
| return (AcpiGbl_HistoryBuffer[HistoryIndex].Command); |
| } |
| |
| /* History buffer is circular */ |
| |
| HistoryIndex++; |
| if (HistoryIndex >= HISTORY_SIZE) |
| { |
| HistoryIndex = 0; |
| } |
| } |
| |
| AcpiOsPrintf ("Invalid history number: %u\n", HistoryIndex); |
| return (NULL); |
| } |
