dbhistry.c revision 7851:e828bbb1689c
1/****************************************************************************** 2 * 3 * Module Name: dbhistry - debugger HISTORY command 4 * $Revision: 1.35 $ 5 * 6 *****************************************************************************/ 7 8/****************************************************************************** 9 * 10 * 1. Copyright Notice 11 * 12 * Some or all of this work - Copyright (c) 1999 - 2008, Intel Corp. 13 * All rights reserved. 14 * 15 * 2. License 16 * 17 * 2.1. This is your license from Intel Corp. under its intellectual property 18 * rights. You may have additional license terms from the party that provided 19 * you this software, covering your right to use that party's intellectual 20 * property rights. 21 * 22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a 23 * copy of the source code appearing in this file ("Covered Code") an 24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the 25 * base code distributed originally by Intel ("Original Intel Code") to copy, 26 * make derivatives, distribute, use and display any portion of the Covered 27 * Code in any form, with the right to sublicense such rights; and 28 * 29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent 30 * license (with the right to sublicense), under only those claims of Intel 31 * patents that are infringed by the Original Intel Code, to make, use, sell, 32 * offer to sell, and import the Covered Code and derivative works thereof 33 * solely to the minimum extent necessary to exercise the above copyright 34 * license, and in no event shall the patent license extend to any additions 35 * to or modifications of the Original Intel Code. No other license or right 36 * is granted directly or by implication, estoppel or otherwise; 37 * 38 * The above copyright and patent license is granted only if the following 39 * conditions are met: 40 * 41 * 3. Conditions 42 * 43 * 3.1. Redistribution of Source with Rights to Further Distribute Source. 44 * Redistribution of source code of any substantial portion of the Covered 45 * Code or modification with rights to further distribute source must include 46 * the above Copyright Notice, the above License, this list of Conditions, 47 * and the following Disclaimer and Export Compliance provision. In addition, 48 * Licensee must cause all Covered Code to which Licensee contributes to 49 * contain a file documenting the changes Licensee made to create that Covered 50 * Code and the date of any change. Licensee must include in that file the 51 * documentation of any changes made by any predecessor Licensee. Licensee 52 * must include a prominent statement that the modification is derived, 53 * directly or indirectly, from Original Intel Code. 54 * 55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source. 56 * Redistribution of source code of any substantial portion of the Covered 57 * Code or modification without rights to further distribute source must 58 * include the following Disclaimer and Export Compliance provision in the 59 * documentation and/or other materials provided with distribution. In 60 * addition, Licensee may not authorize further sublicense of source of any 61 * portion of the Covered Code, and must include terms to the effect that the 62 * license from Licensee to its licensee is limited to the intellectual 63 * property embodied in the software Licensee provides to its licensee, and 64 * not to intellectual property embodied in modifications its licensee may 65 * make. 66 * 67 * 3.3. Redistribution of Executable. Redistribution in executable form of any 68 * substantial portion of the Covered Code or modification must reproduce the 69 * above Copyright Notice, and the following Disclaimer and Export Compliance 70 * provision in the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3.4. Intel retains all right, title, and interest in and to the Original 74 * Intel Code. 75 * 76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by 77 * Intel shall be used in advertising or otherwise to promote the sale, use or 78 * other dealings in products derived from or relating to the Covered Code 79 * without prior written authorization from Intel. 80 * 81 * 4. Disclaimer and Export Compliance 82 * 83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED 84 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE 85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, 86 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY 87 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY 88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A 89 * PARTICULAR PURPOSE. 90 * 91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES 92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR 93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, 94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY 95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL 96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS 97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY 98 * LIMITED REMEDY. 99 * 100 * 4.3. Licensee shall not export, either directly or indirectly, any of this 101 * software or system incorporating such software without first obtaining any 102 * required license or other approval from the U. S. Department of Commerce or 103 * any other agency or department of the United States Government. In the 104 * event Licensee exports any such software from the United States or 105 * re-exports any such software from a foreign destination, Licensee shall 106 * ensure that the distribution and export/re-export of the software is in 107 * compliance with all laws, regulations, orders, or other restrictions of the 108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor 109 * any of its subsidiaries will export/re-export any technical data, process, 110 * software, or service, directly or indirectly, to any country for which the 111 * United States government or any agency thereof requires an export license, 112 * other governmental approval, or letter of assurance, without first obtaining 113 * such license, approval or letter. 114 * 115 *****************************************************************************/ 116 117 118#include "acpi.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 132typedef struct HistoryInfo 133{ 134 char Command[80]; 135 UINT32 CmdNum; 136 137} HISTORY_INFO; 138 139 140static HISTORY_INFO AcpiGbl_HistoryBuffer[HISTORY_SIZE]; 141static UINT16 AcpiGbl_LoHistory = 0; 142static UINT16 AcpiGbl_NumHistory = 0; 143static UINT16 AcpiGbl_NextHistoryIndex = 0; 144static 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 159void 160AcpiDbAddToHistory ( 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 209void 210AcpiDbDisplayHistory ( 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 248char * 249AcpiDbGetFromHistory ( 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: %d\n", HistoryIndex); 288 return (NULL); 289} 290 291#endif /* ACPI_DEBUGGER */ 292 293