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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #include <console/kconsole.h> |
29 | #include <console/kconsole.h> |
30 | #include <console/console.h> |
30 | #include <console/console.h> |
31 | #include <console/chardev.h> |
31 | #include <console/chardev.h> |
32 | #include <print.h> |
32 | #include <print.h> |
33 | #include <panic.h> |
33 | #include <panic.h> |
34 | #include <typedefs.h> |
34 | #include <typedefs.h> |
35 | #include <arch/types.h> |
35 | #include <arch/types.h> |
36 | #include <list.h> |
36 | #include <list.h> |
37 | #include <arch.h> |
37 | #include <arch.h> |
38 | #include <func.h> |
38 | #include <func.h> |
39 | #include <macros.h> |
39 | #include <macros.h> |
40 | #include <debug.h> |
40 | #include <debug.h> |
- | 41 | #include <symtab.h> |
|
41 | 42 | ||
42 | #define MAX_CMDLINE 256 |
43 | #define MAX_CMDLINE 256 |
43 | 44 | ||
44 | /** Simple kernel console. |
45 | /** Simple kernel console. |
45 | * |
46 | * |
46 | * The console is realized by kernel thread kconsole. |
47 | * The console is realized by kernel thread kconsole. |
47 | * It doesn't understand any useful command on its own, |
48 | * It doesn't understand any useful command on its own, |
48 | * but makes it possible for other kernel subsystems to |
49 | * but makes it possible for other kernel subsystems to |
49 | * register their own commands. |
50 | * register their own commands. |
50 | */ |
51 | */ |
51 | 52 | ||
52 | /** Locking. |
53 | /** Locking. |
53 | * |
54 | * |
54 | * There is a list of cmd_info_t structures. This list |
55 | * There is a list of cmd_info_t structures. This list |
55 | * is protected by cmd_lock spinlock. Note that specially |
56 | * is protected by cmd_lock spinlock. Note that specially |
56 | * the link elements of cmd_info_t are protected by |
57 | * the link elements of cmd_info_t are protected by |
57 | * this lock. |
58 | * this lock. |
58 | * |
59 | * |
59 | * Each cmd_info_t also has its own lock, which protects |
60 | * Each cmd_info_t also has its own lock, which protects |
60 | * all elements thereof except the link element. |
61 | * all elements thereof except the link element. |
61 | * |
62 | * |
62 | * cmd_lock must be acquired before any cmd_info lock. |
63 | * cmd_lock must be acquired before any cmd_info lock. |
63 | * When locking two cmd info structures, structure with |
64 | * When locking two cmd info structures, structure with |
64 | * lower address must be locked first. |
65 | * lower address must be locked first. |
65 | */ |
66 | */ |
66 | 67 | ||
67 | spinlock_t cmd_lock; /**< Lock protecting command list. */ |
68 | spinlock_t cmd_lock; /**< Lock protecting command list. */ |
68 | link_t cmd_head; /**< Command list. */ |
69 | link_t cmd_head; /**< Command list. */ |
69 | 70 | ||
70 | static cmd_info_t *parse_cmdline(char *cmdline, size_t len); |
71 | static cmd_info_t *parse_cmdline(char *cmdline, size_t len); |
71 | static bool parse_argument(char *cmdline, size_t len, index_t *start, index_t *end); |
72 | static bool parse_argument(char *cmdline, size_t len, index_t *start, index_t *end); |
72 | 73 | ||
73 | /** Data and methods for 'help' command. */ |
74 | /** Data and methods for 'help' command. */ |
74 | static int cmd_help(cmd_arg_t *argv); |
75 | static int cmd_help(cmd_arg_t *argv); |
75 | static cmd_info_t help_info; |
76 | static cmd_info_t help_info = { |
- | 77 | .name = "help", |
|
- | 78 | .description = "List of supported commands.", |
|
- | 79 | .func = cmd_help, |
|
- | 80 | .argc = 0 |
|
- | 81 | }; |
|
76 | 82 | ||
77 | /** Data and methods for 'description' command. */ |
83 | /** Data and methods for 'description' command. */ |
78 | static int cmd_desc(cmd_arg_t *argv); |
84 | static int cmd_desc(cmd_arg_t *argv); |
79 | static void desc_help(void); |
85 | static void desc_help(void); |
80 | static cmd_info_t desc_info; |
- | |
81 | static char desc_buf[MAX_CMDLINE+1]; |
86 | static char desc_buf[MAX_CMDLINE+1]; |
82 | static cmd_arg_t desc_argv = { |
87 | static cmd_arg_t desc_argv = { |
83 | .type = ARG_TYPE_STRING, |
88 | .type = ARG_TYPE_STRING, |
84 | .buffer = desc_buf, |
89 | .buffer = desc_buf, |
85 | .len = sizeof(desc_buf) |
90 | .len = sizeof(desc_buf) |
86 | }; |
91 | }; |
- | 92 | static cmd_info_t desc_info = { |
|
- | 93 | .name = "describe", |
|
- | 94 | .description = "Describe specified command.", |
|
- | 95 | .help = desc_help, |
|
- | 96 | .func = cmd_desc, |
|
- | 97 | .argc = 1, |
|
- | 98 | .argv = &desc_argv |
|
- | 99 | }; |
|
- | 100 | ||
- | 101 | /** Data and methods for 'symaddr' command. */ |
|
- | 102 | static int cmd_symaddr(cmd_arg_t *argv); |
|
- | 103 | static char symaddr_buf[MAX_CMDLINE+1]; |
|
- | 104 | static cmd_arg_t symaddr_argv = { |
|
- | 105 | .type = ARG_TYPE_STRING, |
|
- | 106 | .buffer = symaddr_buf, |
|
- | 107 | .len = sizeof(symaddr_buf) |
|
- | 108 | }; |
|
- | 109 | static cmd_info_t symaddr_info = { |
|
- | 110 | .name = "symaddr", |
|
- | 111 | .description = "Return symbol address.", |
|
- | 112 | .func = cmd_symaddr, |
|
- | 113 | .argc = 1, |
|
- | 114 | .argv = &symaddr_argv |
|
- | 115 | }; |
|
- | 116 | ||
- | 117 | /** Call0 - call function with no parameters */ |
|
- | 118 | static char call0_buf[MAX_CMDLINE+1]; |
|
- | 119 | ||
- | 120 | static int cmd_call0(cmd_arg_t *argv); |
|
- | 121 | static cmd_arg_t call0_argv = { |
|
- | 122 | .type = ARG_TYPE_STRING, |
|
- | 123 | .buffer = call0_buf, |
|
- | 124 | .len = sizeof(call0_buf) |
|
- | 125 | }; |
|
- | 126 | static cmd_info_t call0_info = { |
|
- | 127 | .name = "call0", |
|
- | 128 | .description = "call0 <function> -> call function().", |
|
- | 129 | .func = cmd_call0, |
|
- | 130 | .argc = 1, |
|
- | 131 | .argv = &call0_argv |
|
- | 132 | }; |
|
- | 133 | ||
- | 134 | static int cmd_call1(cmd_arg_t *argv); |
|
- | 135 | static cmd_arg_t call1_argv[] = { |
|
- | 136 | { |
|
- | 137 | .type = ARG_TYPE_STRING, |
|
- | 138 | .buffer = call0_buf, |
|
- | 139 | .len = sizeof(call0_buf) |
|
- | 140 | }, |
|
- | 141 | { .type = ARG_TYPE_INT } |
|
- | 142 | }; |
|
- | 143 | static cmd_info_t call1_info = { |
|
- | 144 | .name = "call1", |
|
- | 145 | .description = "call1 <function> <arg1> -> call function(arg1).", |
|
- | 146 | .func = cmd_call1, |
|
- | 147 | .argc = 2, |
|
- | 148 | .argv = call1_argv |
|
- | 149 | }; |
|
- | 150 | ||
- | 151 | static int cmd_call2(cmd_arg_t *argv); |
|
- | 152 | static cmd_arg_t call2_argv[] = { |
|
- | 153 | { |
|
- | 154 | .type = ARG_TYPE_STRING, |
|
- | 155 | .buffer = call0_buf, |
|
- | 156 | .len = sizeof(call0_buf) |
|
- | 157 | }, |
|
- | 158 | { .type = ARG_TYPE_INT }, |
|
- | 159 | { .type = ARG_TYPE_INT } |
|
- | 160 | }; |
|
- | 161 | static cmd_info_t call2_info = { |
|
- | 162 | .name = "call2", |
|
- | 163 | .description = "call2 <function> <arg1> <arg2> -> call function(arg1,arg2).", |
|
- | 164 | .func = cmd_call2, |
|
- | 165 | .argc = 3, |
|
- | 166 | .argv = call2_argv |
|
- | 167 | }; |
|
- | 168 | ||
87 | 169 | ||
88 | /** Data and methods for 'halt' command. */ |
170 | /** Data and methods for 'halt' command. */ |
89 | static int cmd_halt(cmd_arg_t *argv); |
171 | static int cmd_halt(cmd_arg_t *argv); |
90 | static cmd_info_t halt_info; |
172 | static cmd_info_t halt_info = { |
- | 173 | .name = "halt", |
|
- | 174 | .description = "Halt the kernel.", |
|
- | 175 | .func = cmd_halt, |
|
- | 176 | .argc = 0 |
|
- | 177 | }; |
|
91 | 178 | ||
92 | /** Initialize kconsole data structures. */ |
179 | /** Initialize kconsole data structures. */ |
93 | void kconsole_init(void) |
180 | void kconsole_init(void) |
94 | { |
181 | { |
95 | spinlock_initialize(&cmd_lock, "kconsole_cmd"); |
182 | spinlock_initialize(&cmd_lock, "kconsole_cmd"); |
96 | list_initialize(&cmd_head); |
183 | list_initialize(&cmd_head); |
97 | 184 | ||
98 | help_info.name = "help"; |
- | |
99 | help_info.description = "List supported commands."; |
- | |
100 | help_info.func = cmd_help; |
- | |
101 | help_info.help = NULL; |
- | |
102 | help_info.argc = 0; |
- | |
103 | help_info.argv = NULL; |
- | |
104 | - | ||
105 | spinlock_initialize(&help_info.lock, "kconsole_help"); |
185 | spinlock_initialize(&help_info.lock, "kconsole_help"); |
106 | link_initialize(&help_info.link); |
186 | link_initialize(&help_info.link); |
107 | - | ||
108 | if (!cmd_register(&help_info)) |
187 | if (!cmd_register(&help_info)) |
109 | panic("could not register command %s\n", help_info.name); |
188 | panic("could not register command %s\n", help_info.name); |
110 | 189 | ||
111 | 190 | ||
112 | desc_info.name = "describe"; |
- | |
113 | desc_info.description = "Describe specified command."; |
- | |
114 | desc_info.help = desc_help; |
- | |
115 | desc_info.func = cmd_desc; |
- | |
116 | desc_info.argc = 1; |
- | |
117 | desc_info.argv = &desc_argv; |
- | |
118 | - | ||
119 | spinlock_initialize(&desc_info.lock, "kconsole_desc"); |
191 | spinlock_initialize(&desc_info.lock, "kconsole_desc"); |
120 | link_initialize(&desc_info.link); |
192 | link_initialize(&desc_info.link); |
121 | - | ||
122 | if (!cmd_register(&desc_info)) |
193 | if (!cmd_register(&desc_info)) |
123 | panic("could not register command %s\n", desc_info.name); |
194 | panic("could not register command %s\n", desc_info.name); |
124 | 195 | ||
- | 196 | spinlock_initialize(&symaddr_info.lock, "kconsole_symaddr"); |
|
- | 197 | link_initialize(&symaddr_info.link); |
|
- | 198 | if (!cmd_register(&symaddr_info)) |
|
- | 199 | panic("could not register command %s\n", symaddr_info.name); |
|
- | 200 | ||
- | 201 | spinlock_initialize(&call0_info.lock, "kconsole_call0"); |
|
- | 202 | link_initialize(&call0_info.link); |
|
- | 203 | if (!cmd_register(&call0_info)) |
|
- | 204 | panic("could not register command %s\n", call0_info.name); |
|
- | 205 | ||
- | 206 | spinlock_initialize(&call1_info.lock, "kconsole_call1"); |
|
- | 207 | link_initialize(&call1_info.link); |
|
- | 208 | if (!cmd_register(&call1_info)) |
|
- | 209 | panic("could not register command %s\n", call1_info.name); |
|
- | 210 | ||
- | 211 | ||
- | 212 | spinlock_initialize(&call2_info.lock, "kconsole_call2"); |
|
- | 213 | link_initialize(&call2_info.link); |
|
- | 214 | if (!cmd_register(&call2_info)) |
|
- | 215 | panic("could not register command %s\n", call2_info.name); |
|
125 | 216 | ||
126 | halt_info.name = "halt"; |
- | |
127 | halt_info.description = "Halt the kernel."; |
- | |
128 | halt_info.func = cmd_halt; |
- | |
129 | halt_info.help = NULL; |
- | |
130 | halt_info.argc = 0; |
- | |
131 | halt_info.argv = NULL; |
- | |
132 | - | ||
133 | spinlock_initialize(&halt_info.lock, "kconsole_halt"); |
217 | spinlock_initialize(&halt_info.lock, "kconsole_halt"); |
134 | link_initialize(&halt_info.link); |
218 | link_initialize(&halt_info.link); |
135 | - | ||
136 | if (!cmd_register(&halt_info)) |
219 | if (!cmd_register(&halt_info)) |
137 | panic("could not register command %s\n", halt_info.name); |
220 | panic("could not register command %s\n", halt_info.name); |
138 | } |
221 | } |
139 | 222 | ||
140 | 223 | ||
141 | /** Register kconsole command. |
224 | /** Register kconsole command. |
142 | * |
225 | * |
143 | * @param cmd Structure describing the command. |
226 | * @param cmd Structure describing the command. |
144 | * |
227 | * |
145 | * @return 0 on failure, 1 on success. |
228 | * @return 0 on failure, 1 on success. |
146 | */ |
229 | */ |
147 | int cmd_register(cmd_info_t *cmd) |
230 | int cmd_register(cmd_info_t *cmd) |
148 | { |
231 | { |
149 | ipl_t ipl; |
232 | ipl_t ipl; |
150 | link_t *cur; |
233 | link_t *cur; |
151 | 234 | ||
152 | spinlock_lock(&cmd_lock); |
235 | spinlock_lock(&cmd_lock); |
153 | 236 | ||
154 | /* |
237 | /* |
155 | * Make sure the command is not already listed. |
238 | * Make sure the command is not already listed. |
156 | */ |
239 | */ |
157 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
240 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
158 | cmd_info_t *hlp; |
241 | cmd_info_t *hlp; |
159 | 242 | ||
160 | hlp = list_get_instance(cur, cmd_info_t, link); |
243 | hlp = list_get_instance(cur, cmd_info_t, link); |
161 | 244 | ||
162 | if (hlp == cmd) { |
245 | if (hlp == cmd) { |
163 | /* The command is already there. */ |
246 | /* The command is already there. */ |
164 | spinlock_unlock(&cmd_lock); |
247 | spinlock_unlock(&cmd_lock); |
165 | return 0; |
248 | return 0; |
166 | } |
249 | } |
167 | 250 | ||
168 | /* Avoid deadlock. */ |
251 | /* Avoid deadlock. */ |
169 | if (hlp < cmd) { |
252 | if (hlp < cmd) { |
170 | spinlock_lock(&hlp->lock); |
253 | spinlock_lock(&hlp->lock); |
171 | spinlock_lock(&cmd->lock); |
254 | spinlock_lock(&cmd->lock); |
172 | } else { |
255 | } else { |
173 | spinlock_lock(&cmd->lock); |
256 | spinlock_lock(&cmd->lock); |
174 | spinlock_lock(&hlp->lock); |
257 | spinlock_lock(&hlp->lock); |
175 | } |
258 | } |
176 | 259 | ||
177 | if ((strncmp(hlp->name, cmd->name, strlen(cmd->name)) == 0)) { |
260 | if ((strncmp(hlp->name, cmd->name, strlen(cmd->name)) == 0)) { |
178 | /* The command is already there. */ |
261 | /* The command is already there. */ |
179 | spinlock_unlock(&hlp->lock); |
262 | spinlock_unlock(&hlp->lock); |
180 | spinlock_unlock(&cmd->lock); |
263 | spinlock_unlock(&cmd->lock); |
181 | spinlock_unlock(&cmd_lock); |
264 | spinlock_unlock(&cmd_lock); |
182 | return 0; |
265 | return 0; |
183 | } |
266 | } |
184 | 267 | ||
185 | spinlock_unlock(&hlp->lock); |
268 | spinlock_unlock(&hlp->lock); |
186 | spinlock_unlock(&cmd->lock); |
269 | spinlock_unlock(&cmd->lock); |
187 | } |
270 | } |
188 | 271 | ||
189 | /* |
272 | /* |
190 | * Now the command can be added. |
273 | * Now the command can be added. |
191 | */ |
274 | */ |
192 | list_append(&cmd->link, &cmd_head); |
275 | list_append(&cmd->link, &cmd_head); |
193 | 276 | ||
194 | spinlock_unlock(&cmd_lock); |
277 | spinlock_unlock(&cmd_lock); |
195 | return 1; |
278 | return 1; |
196 | } |
279 | } |
197 | 280 | ||
198 | /** Kernel console managing thread. |
281 | /** Kernel console managing thread. |
199 | * |
282 | * |
200 | * @param arg Not used. |
283 | * @param arg Not used. |
201 | */ |
284 | */ |
202 | void kconsole(void *arg) |
285 | void kconsole(void *arg) |
203 | { |
286 | { |
204 | char cmdline[MAX_CMDLINE+1]; |
287 | char cmdline[MAX_CMDLINE+1]; |
205 | cmd_info_t *cmd_info; |
288 | cmd_info_t *cmd_info; |
206 | count_t len; |
289 | count_t len; |
207 | 290 | ||
208 | if (!stdin) { |
291 | if (!stdin) { |
209 | printf("%s: no stdin\n", __FUNCTION__); |
292 | printf("%s: no stdin\n", __FUNCTION__); |
210 | return; |
293 | return; |
211 | } |
294 | } |
212 | 295 | ||
213 | while (true) { |
296 | while (true) { |
214 | printf("%s> ", __FUNCTION__); |
297 | printf("%s> ", __FUNCTION__); |
215 | if (!(len = gets(stdin, cmdline, sizeof(cmdline)))) |
298 | if (!(len = gets(stdin, cmdline, sizeof(cmdline)))) |
216 | continue; |
299 | continue; |
217 | cmdline[len] = '\0'; |
300 | cmdline[len] = '\0'; |
218 | cmd_info = parse_cmdline(cmdline, len); |
301 | cmd_info = parse_cmdline(cmdline, len); |
219 | if (!cmd_info) |
302 | if (!cmd_info) |
220 | continue; |
303 | continue; |
221 | (void) cmd_info->func(cmd_info->argv); |
304 | (void) cmd_info->func(cmd_info->argv); |
222 | } |
305 | } |
223 | } |
306 | } |
224 | 307 | ||
225 | /** Parse command line. |
308 | /** Parse command line. |
226 | * |
309 | * |
227 | * @param cmdline Command line as read from input device. |
310 | * @param cmdline Command line as read from input device. |
228 | * @param len Command line length. |
311 | * @param len Command line length. |
229 | * |
312 | * |
230 | * @return Structure describing the command. |
313 | * @return Structure describing the command. |
231 | */ |
314 | */ |
232 | cmd_info_t *parse_cmdline(char *cmdline, size_t len) |
315 | cmd_info_t *parse_cmdline(char *cmdline, size_t len) |
233 | { |
316 | { |
234 | index_t start = 0, end = 0; |
317 | index_t start = 0, end = 0; |
235 | cmd_info_t *cmd = NULL; |
318 | cmd_info_t *cmd = NULL; |
236 | link_t *cur; |
319 | link_t *cur; |
237 | ipl_t ipl; |
320 | ipl_t ipl; |
238 | int i; |
321 | int i; |
239 | 322 | ||
240 | if (!parse_argument(cmdline, len, &start, &end)) { |
323 | if (!parse_argument(cmdline, len, &start, &end)) { |
241 | /* Command line did not contain alphanumeric word. */ |
324 | /* Command line did not contain alphanumeric word. */ |
242 | return NULL; |
325 | return NULL; |
243 | } |
326 | } |
244 | 327 | ||
245 | spinlock_lock(&cmd_lock); |
328 | spinlock_lock(&cmd_lock); |
246 | 329 | ||
247 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
330 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
248 | cmd_info_t *hlp; |
331 | cmd_info_t *hlp; |
249 | 332 | ||
250 | hlp = list_get_instance(cur, cmd_info_t, link); |
333 | hlp = list_get_instance(cur, cmd_info_t, link); |
251 | spinlock_lock(&hlp->lock); |
334 | spinlock_lock(&hlp->lock); |
252 | 335 | ||
253 | if (strncmp(hlp->name, &cmdline[start], (end - start) + 1) == 0) { |
336 | if (strncmp(hlp->name, &cmdline[start], (end - start) + 1) == 0) { |
254 | cmd = hlp; |
337 | cmd = hlp; |
255 | break; |
338 | break; |
256 | } |
339 | } |
257 | 340 | ||
258 | spinlock_unlock(&hlp->lock); |
341 | spinlock_unlock(&hlp->lock); |
259 | } |
342 | } |
260 | 343 | ||
261 | spinlock_unlock(&cmd_lock); |
344 | spinlock_unlock(&cmd_lock); |
262 | 345 | ||
263 | if (!cmd) { |
346 | if (!cmd) { |
264 | /* Unknown command. */ |
347 | /* Unknown command. */ |
265 | printf("Unknown command.\n"); |
348 | printf("Unknown command.\n"); |
266 | return NULL; |
349 | return NULL; |
267 | } |
350 | } |
268 | 351 | ||
269 | /* cmd == hlp is locked */ |
352 | /* cmd == hlp is locked */ |
270 | 353 | ||
271 | /* |
354 | /* |
272 | * The command line must be further analyzed and |
355 | * The command line must be further analyzed and |
273 | * the parameters therefrom must be matched and |
356 | * the parameters therefrom must be matched and |
274 | * converted to those specified in the cmd info |
357 | * converted to those specified in the cmd info |
275 | * structure. |
358 | * structure. |
276 | */ |
359 | */ |
277 | 360 | ||
278 | for (i = 0; i < cmd->argc; i++) { |
361 | for (i = 0; i < cmd->argc; i++) { |
279 | char *buf; |
362 | char *buf; |
280 | start = end + 1; |
363 | start = end + 1; |
281 | if (!parse_argument(cmdline, len, &start, &end)) { |
364 | if (!parse_argument(cmdline, len, &start, &end)) { |
282 | printf("Too few arguments.\n"); |
365 | printf("Too few arguments.\n"); |
283 | spinlock_unlock(&cmd->lock); |
366 | spinlock_unlock(&cmd->lock); |
284 | return NULL; |
367 | return NULL; |
285 | } |
368 | } |
286 | 369 | ||
287 | switch (cmd->argv[i].type) { |
370 | switch (cmd->argv[i].type) { |
288 | case ARG_TYPE_STRING: |
371 | case ARG_TYPE_STRING: |
289 | buf = cmd->argv[i].buffer; |
372 | buf = cmd->argv[i].buffer; |
290 | strncpy(buf, (const char *) &cmdline[start], min((end - start) + 1, cmd->argv[i].len - 1)); |
373 | strncpy(buf, (const char *) &cmdline[start], min((end - start) + 1, cmd->argv[i].len - 1)); |
291 | buf[min((end - start) + 1, cmd->argv[i].len - 1)] = '\0'; |
374 | buf[min((end - start) + 1, cmd->argv[i].len - 1)] = '\0'; |
292 | break; |
375 | break; |
293 | case ARG_TYPE_INT: |
376 | case ARG_TYPE_INT: { |
- | 377 | char symname[MAX_SYMBOL_NAME]; |
|
- | 378 | __address symaddr; |
|
- | 379 | ||
- | 380 | /* If we get a name, try to find it in symbol table */ |
|
- | 381 | if (cmdline[start] < '0' | cmdline[start] > '9') { |
|
- | 382 | strncpy(symname, cmdline+start, min((end-start) + 1, MAX_SYMBOL_NAME -1 )); |
|
- | 383 | symaddr = get_symbol_addr(symname); |
|
- | 384 | if (!symaddr) { |
|
- | 385 | printf("Symbol %s not found.\n",symname); |
|
- | 386 | return NULL; |
|
- | 387 | } |
|
- | 388 | if (symaddr == (__address) -1) { |
|
- | 389 | printf("Duplicate symbol %s.\n",symname); |
|
- | 390 | symtab_print_search(symname); |
|
- | 391 | return NULL; |
|
- | 392 | } |
|
- | 393 | cmd->argv[i].intval = *((__native *)symaddr); |
|
- | 394 | } else /* It's a number - convert it */ |
|
- | 395 | cmd->argv[i].intval = atoi(cmdline+start); |
|
- | 396 | break; |
|
- | 397 | } |
|
294 | case ARG_TYPE_INVALID: |
398 | case ARG_TYPE_INVALID: |
295 | default: |
399 | default: |
296 | panic("invalid argument type\n"); |
400 | printf("invalid argument type\n"); |
- | 401 | return NULL; |
|
297 | break; |
402 | break; |
298 | } |
403 | } |
299 | } |
404 | } |
300 | 405 | ||
301 | start = end + 1; |
406 | start = end + 1; |
302 | if (parse_argument(cmdline, len, &start, &end)) { |
407 | if (parse_argument(cmdline, len, &start, &end)) { |
303 | printf("Too many arguments.\n"); |
408 | printf("Too many arguments.\n"); |
304 | spinlock_unlock(&cmd->lock); |
409 | spinlock_unlock(&cmd->lock); |
305 | return NULL; |
410 | return NULL; |
306 | } |
411 | } |
307 | 412 | ||
308 | spinlock_unlock(&cmd->lock); |
413 | spinlock_unlock(&cmd->lock); |
309 | return cmd; |
414 | return cmd; |
310 | } |
415 | } |
311 | 416 | ||
312 | /** Parse argument. |
417 | /** Parse argument. |
313 | * |
418 | * |
314 | * Find start and end positions of command line argument. |
419 | * Find start and end positions of command line argument. |
315 | * |
420 | * |
316 | * @param cmdline Command line as read from the input device. |
421 | * @param cmdline Command line as read from the input device. |
317 | * @param len Number of characters in cmdline. |
422 | * @param len Number of characters in cmdline. |
318 | * @param start On entry, 'start' contains pointer to the index |
423 | * @param start On entry, 'start' contains pointer to the index |
319 | * of first unprocessed character of cmdline. |
424 | * of first unprocessed character of cmdline. |
320 | * On successful exit, it marks beginning of the next argument. |
425 | * On successful exit, it marks beginning of the next argument. |
321 | * @param end Undefined on entry. On exit, 'end' points to the last character |
426 | * @param end Undefined on entry. On exit, 'end' points to the last character |
322 | * of the next argument. |
427 | * of the next argument. |
323 | * |
428 | * |
324 | * @return false on failure, true on success. |
429 | * @return false on failure, true on success. |
325 | */ |
430 | */ |
326 | bool parse_argument(char *cmdline, size_t len, index_t *start, index_t *end) |
431 | bool parse_argument(char *cmdline, size_t len, index_t *start, index_t *end) |
327 | { |
432 | { |
328 | int i; |
433 | int i; |
329 | bool found_start = false; |
434 | bool found_start = false; |
330 | 435 | ||
331 | ASSERT(start != NULL); |
436 | ASSERT(start != NULL); |
332 | ASSERT(end != NULL); |
437 | ASSERT(end != NULL); |
333 | 438 | ||
334 | for (i = *start; i < len; i++) { |
439 | for (i = *start; i < len; i++) { |
335 | if (!found_start) { |
440 | if (!found_start) { |
336 | if (is_white(cmdline[i])) |
441 | if (is_white(cmdline[i])) |
337 | (*start)++; |
442 | (*start)++; |
338 | else |
443 | else |
339 | found_start = true; |
444 | found_start = true; |
340 | } else { |
445 | } else { |
341 | if (is_white(cmdline[i])) |
446 | if (is_white(cmdline[i])) |
342 | break; |
447 | break; |
343 | } |
448 | } |
344 | } |
449 | } |
345 | *end = i - 1; |
450 | *end = i - 1; |
346 | 451 | ||
347 | return found_start; |
452 | return found_start; |
348 | } |
453 | } |
349 | 454 | ||
350 | 455 | ||
351 | /** List supported commands. |
456 | /** List supported commands. |
352 | * |
457 | * |
353 | * @param argv Argument vector. |
458 | * @param argv Argument vector. |
354 | * |
459 | * |
355 | * @return 0 on failure, 1 on success. |
460 | * @return 0 on failure, 1 on success. |
356 | */ |
461 | */ |
357 | int cmd_help(cmd_arg_t *argv) |
462 | int cmd_help(cmd_arg_t *argv) |
358 | { |
463 | { |
359 | link_t *cur; |
464 | link_t *cur; |
360 | ipl_t ipl; |
465 | ipl_t ipl; |
361 | 466 | ||
362 | spinlock_lock(&cmd_lock); |
467 | spinlock_lock(&cmd_lock); |
363 | 468 | ||
364 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
469 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
365 | cmd_info_t *hlp; |
470 | cmd_info_t *hlp; |
366 | 471 | ||
367 | hlp = list_get_instance(cur, cmd_info_t, link); |
472 | hlp = list_get_instance(cur, cmd_info_t, link); |
368 | spinlock_lock(&hlp->lock); |
473 | spinlock_lock(&hlp->lock); |
369 | 474 | ||
370 | printf("%s - %s\n", hlp->name, hlp->description); |
475 | printf("%s - %s\n", hlp->name, hlp->description); |
371 | 476 | ||
372 | spinlock_unlock(&hlp->lock); |
477 | spinlock_unlock(&hlp->lock); |
373 | } |
478 | } |
374 | 479 | ||
375 | spinlock_unlock(&cmd_lock); |
480 | spinlock_unlock(&cmd_lock); |
376 | 481 | ||
377 | return 1; |
482 | return 1; |
378 | } |
483 | } |
379 | 484 | ||
380 | /** Describe specified command. |
485 | /** Describe specified command. |
381 | * |
486 | * |
382 | * @param argv Argument vector. |
487 | * @param argv Argument vector. |
383 | * |
488 | * |
384 | * @return 0 on failure, 1 on success. |
489 | * @return 0 on failure, 1 on success. |
385 | */ |
490 | */ |
386 | int cmd_desc(cmd_arg_t *argv) |
491 | int cmd_desc(cmd_arg_t *argv) |
387 | { |
492 | { |
388 | link_t *cur; |
493 | link_t *cur; |
389 | ipl_t ipl; |
494 | ipl_t ipl; |
390 | 495 | ||
391 | spinlock_lock(&cmd_lock); |
496 | spinlock_lock(&cmd_lock); |
392 | 497 | ||
393 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
498 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
394 | cmd_info_t *hlp; |
499 | cmd_info_t *hlp; |
395 | 500 | ||
396 | hlp = list_get_instance(cur, cmd_info_t, link); |
501 | hlp = list_get_instance(cur, cmd_info_t, link); |
397 | spinlock_lock(&hlp->lock); |
502 | spinlock_lock(&hlp->lock); |
398 | 503 | ||
399 | if (strncmp(hlp->name, (const char *) argv->buffer, strlen(hlp->name)) == 0) { |
504 | if (strncmp(hlp->name, (const char *) argv->buffer, strlen(hlp->name)) == 0) { |
400 | printf("%s - %s\n", hlp->name, hlp->description); |
505 | printf("%s - %s\n", hlp->name, hlp->description); |
401 | if (hlp->help) |
506 | if (hlp->help) |
402 | hlp->help(); |
507 | hlp->help(); |
403 | spinlock_unlock(&hlp->lock); |
508 | spinlock_unlock(&hlp->lock); |
404 | break; |
509 | break; |
405 | } |
510 | } |
406 | 511 | ||
407 | spinlock_unlock(&hlp->lock); |
512 | spinlock_unlock(&hlp->lock); |
408 | } |
513 | } |
409 | 514 | ||
410 | spinlock_unlock(&cmd_lock); |
515 | spinlock_unlock(&cmd_lock); |
411 | 516 | ||
412 | return 1; |
517 | return 1; |
413 | } |
518 | } |
414 | 519 | ||
- | 520 | /** Search symbol table */ |
|
- | 521 | int cmd_symaddr(cmd_arg_t *argv) |
|
- | 522 | { |
|
- | 523 | __address symaddr; |
|
- | 524 | char *symbol; |
|
- | 525 | ||
- | 526 | symtab_print_search(argv->buffer); |
|
- | 527 | ||
- | 528 | return 1; |
|
- | 529 | } |
|
- | 530 | ||
- | 531 | /** Call function with zero parameters */ |
|
- | 532 | int cmd_call0(cmd_arg_t *argv) |
|
- | 533 | { |
|
- | 534 | __address symaddr; |
|
- | 535 | char *symbol; |
|
- | 536 | __native (*f)(void); |
|
- | 537 | ||
- | 538 | symaddr = get_symbol_addr(argv->buffer); |
|
- | 539 | if (!symaddr) |
|
- | 540 | printf("Symbol not found.\n"); |
|
- | 541 | else if (symaddr == (__address) -1) { |
|
- | 542 | symtab_print_search(argv->buffer); |
|
- | 543 | printf("Duplicate symbol, be more specific.\n"); |
|
- | 544 | } else { |
|
- | 545 | symbol = get_symtab_entry(symaddr); |
|
- | 546 | printf("Calling f(): 0x%p: %s\n", symaddr, symbol); |
|
- | 547 | f = (__native (*)(void)) symaddr; |
|
- | 548 | printf("Result: 0x%X\n", f()); |
|
- | 549 | } |
|
- | 550 | ||
- | 551 | return 1; |
|
- | 552 | } |
|
- | 553 | ||
- | 554 | /** Call function with one parameter */ |
|
- | 555 | int cmd_call1(cmd_arg_t *argv) |
|
- | 556 | { |
|
- | 557 | __address symaddr; |
|
- | 558 | char *symbol; |
|
- | 559 | __native (*f)(__native); |
|
- | 560 | __native arg1 = argv[1].intval; |
|
- | 561 | ||
- | 562 | symaddr = get_symbol_addr(argv->buffer); |
|
- | 563 | if (!symaddr) |
|
- | 564 | printf("Symbol not found.\n"); |
|
- | 565 | else if (symaddr == (__address) -1) { |
|
- | 566 | symtab_print_search(argv->buffer); |
|
- | 567 | printf("Duplicate symbol, be more specific.\n"); |
|
- | 568 | } else { |
|
- | 569 | symbol = get_symtab_entry(symaddr); |
|
- | 570 | printf("Calling f(0x%x): 0x%p: %s\n", arg1, symaddr, symbol); |
|
- | 571 | f = (__native (*)(__native)) symaddr; |
|
- | 572 | printf("Result: 0x%x\n", f(arg1)); |
|
- | 573 | } |
|
- | 574 | ||
- | 575 | return 1; |
|
- | 576 | } |
|
- | 577 | ||
- | 578 | /** Call function with two parameters */ |
|
- | 579 | int cmd_call2(cmd_arg_t *argv) |
|
- | 580 | { |
|
- | 581 | __address symaddr; |
|
- | 582 | char *symbol; |
|
- | 583 | __native (*f)(__native); |
|
- | 584 | __native arg1 = argv[1].intval; |
|
- | 585 | __native arg2 = argv[2].intval; |
|
- | 586 | ||
- | 587 | symaddr = get_symbol_addr(argv->buffer); |
|
- | 588 | if (!symaddr) |
|
- | 589 | printf("Symbol not found.\n"); |
|
- | 590 | else if (symaddr == (__address) -1) { |
|
- | 591 | symtab_print_search(argv->buffer); |
|
- | 592 | printf("Duplicate symbol, be more specific.\n"); |
|
- | 593 | } else { |
|
- | 594 | symbol = get_symtab_entry(symaddr); |
|
- | 595 | printf("Calling f(0x%x,0x%x): 0x%p: %s\n", |
|
- | 596 | arg1, arg2, symaddr, symbol); |
|
- | 597 | f = (__native (*)(__native)) symaddr; |
|
- | 598 | printf("Result: 0x%x\n", f(arg1)); |
|
- | 599 | } |
|
- | 600 | ||
- | 601 | return 1; |
|
- | 602 | } |
|
- | 603 | ||
- | 604 | ||
415 | /** Print detailed description of 'describe' command. */ |
605 | /** Print detailed description of 'describe' command. */ |
416 | void desc_help(void) |
606 | void desc_help(void) |
417 | { |
607 | { |
418 | printf("Syntax: describe command_name\n"); |
608 | printf("Syntax: describe command_name\n"); |
419 | } |
609 | } |
420 | 610 | ||
421 | /** Halt the kernel. |
611 | /** Halt the kernel. |
422 | * |
612 | * |
423 | * @param argv Argument vector (ignored). |
613 | * @param argv Argument vector (ignored). |
424 | * |
614 | * |
425 | * @return 0 on failure, 1 on success (never returns). |
615 | * @return 0 on failure, 1 on success (never returns). |
426 | */ |
616 | */ |
427 | int cmd_halt(cmd_arg_t *argv) |
617 | int cmd_halt(cmd_arg_t *argv) |
428 | { |
618 | { |
429 | halt(); |
619 | halt(); |
430 | return 1; |
620 | return 1; |
431 | } |
621 | } |
432 | 622 |