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| Rev | Author | Line No. | Line |
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| 6595 | serge | 1 | /****************************************************************************** |
| 2 | * |
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| 3 | * Module Name: dbhistry - debugger HISTORY command |
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| 4 | * |
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| 5 | *****************************************************************************/ |
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| 6 | |||
| 7 | /* |
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| 8 | * Copyright (C) 2000 - 2015, Intel Corp. |
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| 9 | * All rights reserved. |
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| 10 | * |
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| 11 | * Redistribution and use in source and binary forms, with or without |
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| 12 | * modification, are permitted provided that the following conditions |
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| 13 | * are met: |
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| 14 | * 1. Redistributions of source code must retain the above copyright |
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| 15 | * notice, this list of conditions, and the following disclaimer, |
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| 16 | * without modification. |
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| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
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| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
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| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
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| 20 | * including a substantially similar Disclaimer requirement for further |
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| 21 | * binary redistribution. |
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| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
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| 23 | * of any contributors may be used to endorse or promote products derived |
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| 24 | * from this software without specific prior written permission. |
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| 25 | * |
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| 26 | * Alternatively, this software may be distributed under the terms of the |
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| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
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| 28 | * Software Foundation. |
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| 29 | * |
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| 30 | * NO WARRANTY |
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| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
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| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 41 | * POSSIBILITY OF SUCH DAMAGES. |
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| 42 | */ |
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| 43 | |||
| 44 | #include |
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| 45 | #include "accommon.h" |
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| 46 | #include "acdebug.h" |
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| 47 | |||
| 48 | #define _COMPONENT ACPI_CA_DEBUGGER |
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| 49 | ACPI_MODULE_NAME("dbhistry") |
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| 50 | |||
| 51 | #define HI_NO_HISTORY 0 |
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| 52 | #define HI_RECORD_HISTORY 1 |
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| 53 | #define HISTORY_SIZE 40 |
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| 54 | typedef struct history_info { |
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| 55 | char *command; |
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| 56 | u32 cmd_num; |
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| 57 | |||
| 58 | } HISTORY_INFO; |
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| 59 | |||
| 60 | static HISTORY_INFO acpi_gbl_history_buffer[HISTORY_SIZE]; |
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| 61 | static u16 acpi_gbl_lo_history = 0; |
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| 62 | static u16 acpi_gbl_num_history = 0; |
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| 63 | static u16 acpi_gbl_next_history_index = 0; |
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| 64 | u32 acpi_gbl_next_cmd_num = 1; |
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| 65 | |||
| 66 | /******************************************************************************* |
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| 67 | * |
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| 68 | * FUNCTION: acpi_db_add_to_history |
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| 69 | * |
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| 70 | * PARAMETERS: command_line - Command to add |
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| 71 | * |
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| 72 | * RETURN: None |
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| 73 | * |
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| 74 | * DESCRIPTION: Add a command line to the history buffer. |
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| 75 | * |
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| 76 | ******************************************************************************/ |
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| 77 | |||
| 78 | void acpi_db_add_to_history(char *command_line) |
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| 79 | { |
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| 80 | u16 cmd_len; |
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| 81 | u16 buffer_len; |
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| 82 | |||
| 83 | /* Put command into the next available slot */ |
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| 84 | |||
| 85 | cmd_len = (u16)strlen(command_line); |
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| 86 | if (!cmd_len) { |
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| 87 | return; |
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| 88 | } |
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| 89 | |||
| 90 | if (acpi_gbl_history_buffer[acpi_gbl_next_history_index].command != |
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| 91 | NULL) { |
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| 92 | buffer_len = |
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| 93 | (u16) |
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| 94 | strlen(acpi_gbl_history_buffer[acpi_gbl_next_history_index]. |
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| 95 | command); |
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| 96 | |||
| 97 | if (cmd_len > buffer_len) { |
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| 98 | acpi_os_free(acpi_gbl_history_buffer |
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| 99 | [acpi_gbl_next_history_index].command); |
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| 100 | acpi_gbl_history_buffer[acpi_gbl_next_history_index]. |
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| 101 | command = acpi_os_allocate(cmd_len + 1); |
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| 102 | } |
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| 103 | } else { |
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| 104 | acpi_gbl_history_buffer[acpi_gbl_next_history_index].command = |
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| 105 | acpi_os_allocate(cmd_len + 1); |
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| 106 | } |
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| 107 | |||
| 108 | strcpy(acpi_gbl_history_buffer[acpi_gbl_next_history_index].command, |
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| 109 | command_line); |
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| 110 | |||
| 111 | acpi_gbl_history_buffer[acpi_gbl_next_history_index].cmd_num = |
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| 112 | acpi_gbl_next_cmd_num; |
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| 113 | |||
| 114 | /* Adjust indexes */ |
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| 115 | |||
| 116 | if ((acpi_gbl_num_history == HISTORY_SIZE) && |
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| 117 | (acpi_gbl_next_history_index == acpi_gbl_lo_history)) { |
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| 118 | acpi_gbl_lo_history++; |
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| 119 | if (acpi_gbl_lo_history >= HISTORY_SIZE) { |
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| 120 | acpi_gbl_lo_history = 0; |
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| 121 | } |
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| 122 | } |
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| 123 | |||
| 124 | acpi_gbl_next_history_index++; |
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| 125 | if (acpi_gbl_next_history_index >= HISTORY_SIZE) { |
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| 126 | acpi_gbl_next_history_index = 0; |
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| 127 | } |
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| 128 | |||
| 129 | acpi_gbl_next_cmd_num++; |
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| 130 | if (acpi_gbl_num_history < HISTORY_SIZE) { |
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| 131 | acpi_gbl_num_history++; |
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| 132 | } |
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| 133 | } |
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| 134 | |||
| 135 | /******************************************************************************* |
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| 136 | * |
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| 137 | * FUNCTION: acpi_db_display_history |
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| 138 | * |
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| 139 | * PARAMETERS: None |
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| 140 | * |
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| 141 | * RETURN: None |
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| 142 | * |
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| 143 | * DESCRIPTION: Display the contents of the history buffer |
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| 144 | * |
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| 145 | ******************************************************************************/ |
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| 146 | |||
| 147 | void acpi_db_display_history(void) |
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| 148 | { |
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| 149 | u32 i; |
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| 150 | u16 history_index; |
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| 151 | |||
| 152 | history_index = acpi_gbl_lo_history; |
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| 153 | |||
| 154 | /* Dump entire history buffer */ |
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| 155 | |||
| 156 | for (i = 0; i < acpi_gbl_num_history; i++) { |
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| 157 | if (acpi_gbl_history_buffer[history_index].command) { |
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| 158 | acpi_os_printf("%3ld %s\n", |
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| 159 | acpi_gbl_history_buffer[history_index]. |
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| 160 | cmd_num, |
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| 161 | acpi_gbl_history_buffer[history_index]. |
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| 162 | command); |
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| 163 | } |
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| 164 | |||
| 165 | history_index++; |
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| 166 | if (history_index >= HISTORY_SIZE) { |
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| 167 | history_index = 0; |
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| 168 | } |
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| 169 | } |
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| 170 | } |
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| 171 | |||
| 172 | /******************************************************************************* |
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| 173 | * |
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| 174 | * FUNCTION: acpi_db_get_from_history |
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| 175 | * |
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| 176 | * PARAMETERS: command_num_arg - String containing the number of the |
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| 177 | * command to be retrieved |
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| 178 | * |
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| 179 | * RETURN: Pointer to the retrieved command. Null on error. |
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| 180 | * |
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| 181 | * DESCRIPTION: Get a command from the history buffer |
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| 182 | * |
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| 183 | ******************************************************************************/ |
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| 184 | |||
| 185 | char *acpi_db_get_from_history(char *command_num_arg) |
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| 186 | { |
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| 187 | u32 cmd_num; |
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| 188 | |||
| 189 | if (command_num_arg == NULL) { |
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| 190 | cmd_num = acpi_gbl_next_cmd_num - 1; |
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| 191 | } |
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| 192 | |||
| 193 | else { |
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| 194 | cmd_num = strtoul(command_num_arg, NULL, 0); |
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| 195 | } |
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| 196 | |||
| 197 | return (acpi_db_get_history_by_index(cmd_num)); |
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| 198 | } |
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| 199 | |||
| 200 | /******************************************************************************* |
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| 201 | * |
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| 202 | * FUNCTION: acpi_db_get_history_by_index |
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| 203 | * |
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| 204 | * PARAMETERS: cmd_num - Index of the desired history entry. |
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| 205 | * Values are 0...(acpi_gbl_next_cmd_num - 1) |
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| 206 | * |
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| 207 | * RETURN: Pointer to the retrieved command. Null on error. |
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| 208 | * |
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| 209 | * DESCRIPTION: Get a command from the history buffer |
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| 210 | * |
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| 211 | ******************************************************************************/ |
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| 212 | |||
| 213 | char *acpi_db_get_history_by_index(u32 cmd_num) |
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| 214 | { |
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| 215 | u32 i; |
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| 216 | u16 history_index; |
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| 217 | |||
| 218 | /* Search history buffer */ |
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| 219 | |||
| 220 | history_index = acpi_gbl_lo_history; |
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| 221 | for (i = 0; i < acpi_gbl_num_history; i++) { |
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| 222 | if (acpi_gbl_history_buffer[history_index].cmd_num == cmd_num) { |
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| 223 | |||
| 224 | /* Found the command, return it */ |
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| 225 | |||
| 226 | return (acpi_gbl_history_buffer[history_index].command); |
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| 227 | } |
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| 228 | |||
| 229 | /* History buffer is circular */ |
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| 230 | |||
| 231 | history_index++; |
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| 232 | if (history_index >= HISTORY_SIZE) { |
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| 233 | history_index = 0; |
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| 234 | } |
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| 235 | } |
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| 236 | |||
| 237 | acpi_os_printf("Invalid history number: %u\n", history_index); |
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| 238 | return (NULL); |
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| 239 | } |