blob: b0b9a26c7db5ec35de6dd391410c7759b4ce8618 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/******************************************************************************
*
* Module Name: dbhistry - debugger HISTORY command
*
* Copyright (C) 2000 - 2018, Intel Corp.
*
*****************************************************************************/
#include <acpi/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 history_info {
char *command;
u32 cmd_num;
} HISTORY_INFO;
static HISTORY_INFO acpi_gbl_history_buffer[HISTORY_SIZE];
static u16 acpi_gbl_lo_history = 0;
static u16 acpi_gbl_num_history = 0;
static u16 acpi_gbl_next_history_index = 0;
u32 acpi_gbl_next_cmd_num = 1;
/*******************************************************************************
*
* FUNCTION: acpi_db_add_to_history
*
* PARAMETERS: command_line - Command to add
*
* RETURN: None
*
* DESCRIPTION: Add a command line to the history buffer.
*
******************************************************************************/
void acpi_db_add_to_history(char *command_line)
{
u16 cmd_len;
u16 buffer_len;
/* Put command into the next available slot */
cmd_len = (u16)strlen(command_line);
if (!cmd_len) {
return;
}
if (acpi_gbl_history_buffer[acpi_gbl_next_history_index].command !=
NULL) {
buffer_len =
(u16)
strlen(acpi_gbl_history_buffer[acpi_gbl_next_history_index].
command);
if (cmd_len > buffer_len) {
acpi_os_free(acpi_gbl_history_buffer
[acpi_gbl_next_history_index].command);
acpi_gbl_history_buffer[acpi_gbl_next_history_index].
command = acpi_os_allocate(cmd_len + 1);
}
} else {
acpi_gbl_history_buffer[acpi_gbl_next_history_index].command =
acpi_os_allocate(cmd_len + 1);
}
strcpy(acpi_gbl_history_buffer[acpi_gbl_next_history_index].command,
command_line);
acpi_gbl_history_buffer[acpi_gbl_next_history_index].cmd_num =
acpi_gbl_next_cmd_num;
/* Adjust indexes */
if ((acpi_gbl_num_history == HISTORY_SIZE) &&
(acpi_gbl_next_history_index == acpi_gbl_lo_history)) {
acpi_gbl_lo_history++;
if (acpi_gbl_lo_history >= HISTORY_SIZE) {
acpi_gbl_lo_history = 0;
}
}
acpi_gbl_next_history_index++;
if (acpi_gbl_next_history_index >= HISTORY_SIZE) {
acpi_gbl_next_history_index = 0;
}
acpi_gbl_next_cmd_num++;
if (acpi_gbl_num_history < HISTORY_SIZE) {
acpi_gbl_num_history++;
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_display_history
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: Display the contents of the history buffer
*
******************************************************************************/
void acpi_db_display_history(void)
{
u32 i;
u16 history_index;
history_index = acpi_gbl_lo_history;
/* Dump entire history buffer */
for (i = 0; i < acpi_gbl_num_history; i++) {
if (acpi_gbl_history_buffer[history_index].command) {
acpi_os_printf("%3ld %s\n",
acpi_gbl_history_buffer[history_index].
cmd_num,
acpi_gbl_history_buffer[history_index].
command);
}
history_index++;
if (history_index >= HISTORY_SIZE) {
history_index = 0;
}
}
}
/*******************************************************************************
*
* FUNCTION: acpi_db_get_from_history
*
* PARAMETERS: command_num_arg - 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 *acpi_db_get_from_history(char *command_num_arg)
{
u32 cmd_num;
if (command_num_arg == NULL) {
cmd_num = acpi_gbl_next_cmd_num - 1;
}
else {
cmd_num = strtoul(command_num_arg, NULL, 0);
}
return (acpi_db_get_history_by_index(cmd_num));
}
/*******************************************************************************
*
* FUNCTION: acpi_db_get_history_by_index
*
* PARAMETERS: cmd_num - Index of the desired history entry.
* Values are 0...(acpi_gbl_next_cmd_num - 1)
*
* RETURN: Pointer to the retrieved command. Null on error.
*
* DESCRIPTION: Get a command from the history buffer
*
******************************************************************************/
char *acpi_db_get_history_by_index(u32 cmd_num)
{
u32 i;
u16 history_index;
/* Search history buffer */
history_index = acpi_gbl_lo_history;
for (i = 0; i < acpi_gbl_num_history; i++) {
if (acpi_gbl_history_buffer[history_index].cmd_num == cmd_num) {
/* Found the command, return it */
return (acpi_gbl_history_buffer[history_index].command);
}
/* History buffer is circular */
history_index++;
if (history_index >= HISTORY_SIZE) {
history_index = 0;
}
}
acpi_os_printf("Invalid history number: %u\n", history_index);
return (NULL);
}
|
