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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 | #include <symtab.h> |
42 | 42 | ||
43 | #define MAX_CMDLINE 256 |
43 | #define MAX_CMDLINE 256 |
44 | 44 | ||
45 | /** Simple kernel console. |
45 | /** Simple kernel console. |
46 | * |
46 | * |
47 | * The console is realized by kernel thread kconsole. |
47 | * The console is realized by kernel thread kconsole. |
48 | * It doesn't understand any useful command on its own, |
48 | * It doesn't understand any useful command on its own, |
49 | * but makes it possible for other kernel subsystems to |
49 | * but makes it possible for other kernel subsystems to |
50 | * register their own commands. |
50 | * register their own commands. |
51 | */ |
51 | */ |
52 | 52 | ||
53 | /** Locking. |
53 | /** Locking. |
54 | * |
54 | * |
55 | * There is a list of cmd_info_t structures. This list |
55 | * There is a list of cmd_info_t structures. This list |
56 | * is protected by cmd_lock spinlock. Note that specially |
56 | * is protected by cmd_lock spinlock. Note that specially |
57 | * the link elements of cmd_info_t are protected by |
57 | * the link elements of cmd_info_t are protected by |
58 | * this lock. |
58 | * this lock. |
59 | * |
59 | * |
60 | * Each cmd_info_t also has its own lock, which protects |
60 | * Each cmd_info_t also has its own lock, which protects |
61 | * all elements thereof except the link element. |
61 | * all elements thereof except the link element. |
62 | * |
62 | * |
63 | * cmd_lock must be acquired before any cmd_info lock. |
63 | * cmd_lock must be acquired before any cmd_info lock. |
64 | * When locking two cmd info structures, structure with |
64 | * When locking two cmd info structures, structure with |
65 | * lower address must be locked first. |
65 | * lower address must be locked first. |
66 | */ |
66 | */ |
67 | 67 | ||
68 | spinlock_t cmd_lock; /**< Lock protecting command list. */ |
68 | spinlock_t cmd_lock; /**< Lock protecting command list. */ |
69 | link_t cmd_head; /**< Command list. */ |
69 | link_t cmd_head; /**< Command list. */ |
70 | 70 | ||
71 | static cmd_info_t *parse_cmdline(char *cmdline, size_t len); |
71 | static cmd_info_t *parse_cmdline(char *cmdline, size_t len); |
72 | 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); |
73 | 73 | ||
74 | /** Data and methods for 'help' command. */ |
74 | /** Data and methods for 'help' command. */ |
75 | static int cmd_help(cmd_arg_t *argv); |
75 | static int cmd_help(cmd_arg_t *argv); |
76 | static cmd_info_t help_info = { |
76 | static cmd_info_t help_info = { |
77 | .name = "help", |
77 | .name = "help", |
78 | .description = "List of supported commands.", |
78 | .description = "List of supported commands.", |
79 | .func = cmd_help, |
79 | .func = cmd_help, |
80 | .argc = 0 |
80 | .argc = 0 |
81 | }; |
81 | }; |
82 | 82 | ||
83 | /** Data and methods for 'description' command. */ |
83 | /** Data and methods for 'description' command. */ |
84 | static int cmd_desc(cmd_arg_t *argv); |
84 | static int cmd_desc(cmd_arg_t *argv); |
85 | static void desc_help(void); |
85 | static void desc_help(void); |
86 | static char desc_buf[MAX_CMDLINE+1]; |
86 | static char desc_buf[MAX_CMDLINE+1]; |
87 | static cmd_arg_t desc_argv = { |
87 | static cmd_arg_t desc_argv = { |
88 | .type = ARG_TYPE_STRING, |
88 | .type = ARG_TYPE_STRING, |
89 | .buffer = desc_buf, |
89 | .buffer = desc_buf, |
90 | .len = sizeof(desc_buf) |
90 | .len = sizeof(desc_buf) |
91 | }; |
91 | }; |
92 | static cmd_info_t desc_info = { |
92 | static cmd_info_t desc_info = { |
93 | .name = "describe", |
93 | .name = "describe", |
94 | .description = "Describe specified command.", |
94 | .description = "Describe specified command.", |
95 | .help = desc_help, |
95 | .help = desc_help, |
96 | .func = cmd_desc, |
96 | .func = cmd_desc, |
97 | .argc = 1, |
97 | .argc = 1, |
98 | .argv = &desc_argv |
98 | .argv = &desc_argv |
99 | }; |
99 | }; |
100 | 100 | ||
101 | /** Data and methods for 'symaddr' command. */ |
101 | /** Data and methods for 'symaddr' command. */ |
102 | static int cmd_symaddr(cmd_arg_t *argv); |
102 | static int cmd_symaddr(cmd_arg_t *argv); |
103 | static char symaddr_buf[MAX_CMDLINE+1]; |
103 | static char symaddr_buf[MAX_CMDLINE+1]; |
104 | static cmd_arg_t symaddr_argv = { |
104 | static cmd_arg_t symaddr_argv = { |
105 | .type = ARG_TYPE_STRING, |
105 | .type = ARG_TYPE_STRING, |
106 | .buffer = symaddr_buf, |
106 | .buffer = symaddr_buf, |
107 | .len = sizeof(symaddr_buf) |
107 | .len = sizeof(symaddr_buf) |
108 | }; |
108 | }; |
109 | static cmd_info_t symaddr_info = { |
109 | static cmd_info_t symaddr_info = { |
110 | .name = "symaddr", |
110 | .name = "symaddr", |
111 | .description = "Return symbol address.", |
111 | .description = "Return symbol address.", |
112 | .func = cmd_symaddr, |
112 | .func = cmd_symaddr, |
113 | .argc = 1, |
113 | .argc = 1, |
114 | .argv = &symaddr_argv |
114 | .argv = &symaddr_argv |
115 | }; |
115 | }; |
116 | 116 | ||
117 | /** Call0 - call function with no parameters */ |
117 | /** Call0 - call function with no parameters */ |
118 | static char call0_buf[MAX_CMDLINE+1]; |
118 | static char call0_buf[MAX_CMDLINE+1]; |
119 | static char carg1_buf[MAX_CMDLINE+1]; |
119 | static char carg1_buf[MAX_CMDLINE+1]; |
120 | static char carg2_buf[MAX_CMDLINE+1]; |
120 | static char carg2_buf[MAX_CMDLINE+1]; |
121 | 121 | ||
122 | static int cmd_call0(cmd_arg_t *argv); |
122 | static int cmd_call0(cmd_arg_t *argv); |
123 | static cmd_arg_t call0_argv = { |
123 | static cmd_arg_t call0_argv = { |
124 | .type = ARG_TYPE_STRING, |
124 | .type = ARG_TYPE_STRING, |
125 | .buffer = call0_buf, |
125 | .buffer = call0_buf, |
126 | .len = sizeof(call0_buf) |
126 | .len = sizeof(call0_buf) |
127 | }; |
127 | }; |
128 | static cmd_info_t call0_info = { |
128 | static cmd_info_t call0_info = { |
129 | .name = "call0", |
129 | .name = "call0", |
130 | .description = "call0 <function> -> call function().", |
130 | .description = "call0 <function> -> call function().", |
131 | .func = cmd_call0, |
131 | .func = cmd_call0, |
132 | .argc = 1, |
132 | .argc = 1, |
133 | .argv = &call0_argv |
133 | .argv = &call0_argv |
134 | }; |
134 | }; |
135 | 135 | ||
136 | static int cmd_call1(cmd_arg_t *argv); |
136 | static int cmd_call1(cmd_arg_t *argv); |
137 | static cmd_arg_t call1_argv[] = { |
137 | static cmd_arg_t call1_argv[] = { |
138 | { |
138 | { |
139 | .type = ARG_TYPE_STRING, |
139 | .type = ARG_TYPE_STRING, |
140 | .buffer = call0_buf, |
140 | .buffer = call0_buf, |
141 | .len = sizeof(call0_buf) |
141 | .len = sizeof(call0_buf) |
142 | }, |
142 | }, |
143 | { |
143 | { |
144 | .type = ARG_TYPE_VAR, |
144 | .type = ARG_TYPE_VAR, |
145 | .buffer = carg1_buf, |
145 | .buffer = carg1_buf, |
146 | .len = sizeof(carg1_buf) |
146 | .len = sizeof(carg1_buf) |
147 | } |
147 | } |
148 | }; |
148 | }; |
149 | static cmd_info_t call1_info = { |
149 | static cmd_info_t call1_info = { |
150 | .name = "call1", |
150 | .name = "call1", |
151 | .description = "call1 <function> <arg1> -> call function(arg1).", |
151 | .description = "call1 <function> <arg1> -> call function(arg1).", |
152 | .func = cmd_call1, |
152 | .func = cmd_call1, |
153 | .argc = 2, |
153 | .argc = 2, |
154 | .argv = call1_argv |
154 | .argv = call1_argv |
155 | }; |
155 | }; |
156 | 156 | ||
157 | static int cmd_call2(cmd_arg_t *argv); |
157 | static int cmd_call2(cmd_arg_t *argv); |
158 | static cmd_arg_t call2_argv[] = { |
158 | static cmd_arg_t call2_argv[] = { |
159 | { |
159 | { |
160 | .type = ARG_TYPE_STRING, |
160 | .type = ARG_TYPE_STRING, |
161 | .buffer = call0_buf, |
161 | .buffer = call0_buf, |
162 | .len = sizeof(call0_buf) |
162 | .len = sizeof(call0_buf) |
163 | }, |
163 | }, |
164 | { |
164 | { |
165 | .type = ARG_TYPE_VAR, |
165 | .type = ARG_TYPE_VAR, |
166 | .buffer = carg1_buf, |
166 | .buffer = carg1_buf, |
167 | .len = sizeof(carg1_buf) |
167 | .len = sizeof(carg1_buf) |
168 | }, |
168 | }, |
169 | { |
169 | { |
170 | .type = ARG_TYPE_VAR, |
170 | .type = ARG_TYPE_VAR, |
171 | .buffer = carg2_buf, |
171 | .buffer = carg2_buf, |
172 | .len = sizeof(carg2_buf) |
172 | .len = sizeof(carg2_buf) |
173 | } |
173 | } |
174 | }; |
174 | }; |
175 | static cmd_info_t call2_info = { |
175 | static cmd_info_t call2_info = { |
176 | .name = "call2", |
176 | .name = "call2", |
177 | .description = "call2 <function> <arg1> <arg2> -> call function(arg1,arg2).", |
177 | .description = "call2 <function> <arg1> <arg2> -> call function(arg1,arg2).", |
178 | .func = cmd_call2, |
178 | .func = cmd_call2, |
179 | .argc = 3, |
179 | .argc = 3, |
180 | .argv = call2_argv |
180 | .argv = call2_argv |
181 | }; |
181 | }; |
182 | 182 | ||
183 | 183 | ||
184 | /** Data and methods for 'halt' command. */ |
184 | /** Data and methods for 'halt' command. */ |
185 | static int cmd_halt(cmd_arg_t *argv); |
185 | static int cmd_halt(cmd_arg_t *argv); |
186 | static cmd_info_t halt_info = { |
186 | static cmd_info_t halt_info = { |
187 | .name = "halt", |
187 | .name = "halt", |
188 | .description = "Halt the kernel.", |
188 | .description = "Halt the kernel.", |
189 | .func = cmd_halt, |
189 | .func = cmd_halt, |
190 | .argc = 0 |
190 | .argc = 0 |
191 | }; |
191 | }; |
192 | 192 | ||
193 | /** Initialize kconsole data structures. */ |
193 | /** Initialize kconsole data structures. */ |
194 | void kconsole_init(void) |
194 | void kconsole_init(void) |
195 | { |
195 | { |
196 | spinlock_initialize(&cmd_lock, "kconsole_cmd"); |
196 | spinlock_initialize(&cmd_lock, "kconsole_cmd"); |
197 | list_initialize(&cmd_head); |
197 | list_initialize(&cmd_head); |
198 | 198 | ||
199 | spinlock_initialize(&help_info.lock, "kconsole_help"); |
199 | spinlock_initialize(&help_info.lock, "kconsole_help"); |
200 | link_initialize(&help_info.link); |
200 | link_initialize(&help_info.link); |
201 | if (!cmd_register(&help_info)) |
201 | if (!cmd_register(&help_info)) |
202 | panic("could not register command %s\n", help_info.name); |
202 | panic("could not register command %s\n", help_info.name); |
203 | 203 | ||
204 | 204 | ||
205 | spinlock_initialize(&desc_info.lock, "kconsole_desc"); |
205 | spinlock_initialize(&desc_info.lock, "kconsole_desc"); |
206 | link_initialize(&desc_info.link); |
206 | link_initialize(&desc_info.link); |
207 | if (!cmd_register(&desc_info)) |
207 | if (!cmd_register(&desc_info)) |
208 | panic("could not register command %s\n", desc_info.name); |
208 | panic("could not register command %s\n", desc_info.name); |
209 | 209 | ||
210 | spinlock_initialize(&symaddr_info.lock, "kconsole_symaddr"); |
210 | spinlock_initialize(&symaddr_info.lock, "kconsole_symaddr"); |
211 | link_initialize(&symaddr_info.link); |
211 | link_initialize(&symaddr_info.link); |
212 | if (!cmd_register(&symaddr_info)) |
212 | if (!cmd_register(&symaddr_info)) |
213 | panic("could not register command %s\n", symaddr_info.name); |
213 | panic("could not register command %s\n", symaddr_info.name); |
214 | 214 | ||
215 | spinlock_initialize(&call0_info.lock, "kconsole_call0"); |
215 | spinlock_initialize(&call0_info.lock, "kconsole_call0"); |
216 | link_initialize(&call0_info.link); |
216 | link_initialize(&call0_info.link); |
217 | if (!cmd_register(&call0_info)) |
217 | if (!cmd_register(&call0_info)) |
218 | panic("could not register command %s\n", call0_info.name); |
218 | panic("could not register command %s\n", call0_info.name); |
219 | 219 | ||
220 | spinlock_initialize(&call1_info.lock, "kconsole_call1"); |
220 | spinlock_initialize(&call1_info.lock, "kconsole_call1"); |
221 | link_initialize(&call1_info.link); |
221 | link_initialize(&call1_info.link); |
222 | if (!cmd_register(&call1_info)) |
222 | if (!cmd_register(&call1_info)) |
223 | panic("could not register command %s\n", call1_info.name); |
223 | panic("could not register command %s\n", call1_info.name); |
224 | 224 | ||
225 | 225 | ||
226 | spinlock_initialize(&call2_info.lock, "kconsole_call2"); |
226 | spinlock_initialize(&call2_info.lock, "kconsole_call2"); |
227 | link_initialize(&call2_info.link); |
227 | link_initialize(&call2_info.link); |
228 | if (!cmd_register(&call2_info)) |
228 | if (!cmd_register(&call2_info)) |
229 | panic("could not register command %s\n", call2_info.name); |
229 | panic("could not register command %s\n", call2_info.name); |
230 | 230 | ||
231 | spinlock_initialize(&halt_info.lock, "kconsole_halt"); |
231 | spinlock_initialize(&halt_info.lock, "kconsole_halt"); |
232 | link_initialize(&halt_info.link); |
232 | link_initialize(&halt_info.link); |
233 | if (!cmd_register(&halt_info)) |
233 | if (!cmd_register(&halt_info)) |
234 | panic("could not register command %s\n", halt_info.name); |
234 | panic("could not register command %s\n", halt_info.name); |
235 | } |
235 | } |
236 | 236 | ||
237 | 237 | ||
238 | /** Register kconsole command. |
238 | /** Register kconsole command. |
239 | * |
239 | * |
240 | * @param cmd Structure describing the command. |
240 | * @param cmd Structure describing the command. |
241 | * |
241 | * |
242 | * @return 0 on failure, 1 on success. |
242 | * @return 0 on failure, 1 on success. |
243 | */ |
243 | */ |
244 | int cmd_register(cmd_info_t *cmd) |
244 | int cmd_register(cmd_info_t *cmd) |
245 | { |
245 | { |
246 | ipl_t ipl; |
246 | ipl_t ipl; |
247 | link_t *cur; |
247 | link_t *cur; |
248 | 248 | ||
249 | spinlock_lock(&cmd_lock); |
249 | spinlock_lock(&cmd_lock); |
250 | 250 | ||
251 | /* |
251 | /* |
252 | * Make sure the command is not already listed. |
252 | * Make sure the command is not already listed. |
253 | */ |
253 | */ |
254 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
254 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
255 | cmd_info_t *hlp; |
255 | cmd_info_t *hlp; |
256 | 256 | ||
257 | hlp = list_get_instance(cur, cmd_info_t, link); |
257 | hlp = list_get_instance(cur, cmd_info_t, link); |
258 | 258 | ||
259 | if (hlp == cmd) { |
259 | if (hlp == cmd) { |
260 | /* The command is already there. */ |
260 | /* The command is already there. */ |
261 | spinlock_unlock(&cmd_lock); |
261 | spinlock_unlock(&cmd_lock); |
262 | return 0; |
262 | return 0; |
263 | } |
263 | } |
264 | 264 | ||
265 | /* Avoid deadlock. */ |
265 | /* Avoid deadlock. */ |
266 | if (hlp < cmd) { |
266 | if (hlp < cmd) { |
267 | spinlock_lock(&hlp->lock); |
267 | spinlock_lock(&hlp->lock); |
268 | spinlock_lock(&cmd->lock); |
268 | spinlock_lock(&cmd->lock); |
269 | } else { |
269 | } else { |
270 | spinlock_lock(&cmd->lock); |
270 | spinlock_lock(&cmd->lock); |
271 | spinlock_lock(&hlp->lock); |
271 | spinlock_lock(&hlp->lock); |
272 | } |
272 | } |
273 | 273 | ||
274 | if ((strncmp(hlp->name, cmd->name, strlen(cmd->name)) == 0)) { |
274 | if ((strncmp(hlp->name, cmd->name, strlen(cmd->name)) == 0)) { |
275 | /* The command is already there. */ |
275 | /* The command is already there. */ |
276 | spinlock_unlock(&hlp->lock); |
276 | spinlock_unlock(&hlp->lock); |
277 | spinlock_unlock(&cmd->lock); |
277 | spinlock_unlock(&cmd->lock); |
278 | spinlock_unlock(&cmd_lock); |
278 | spinlock_unlock(&cmd_lock); |
279 | return 0; |
279 | return 0; |
280 | } |
280 | } |
281 | 281 | ||
282 | spinlock_unlock(&hlp->lock); |
282 | spinlock_unlock(&hlp->lock); |
283 | spinlock_unlock(&cmd->lock); |
283 | spinlock_unlock(&cmd->lock); |
284 | } |
284 | } |
285 | 285 | ||
286 | /* |
286 | /* |
287 | * Now the command can be added. |
287 | * Now the command can be added. |
288 | */ |
288 | */ |
289 | list_append(&cmd->link, &cmd_head); |
289 | list_append(&cmd->link, &cmd_head); |
290 | 290 | ||
291 | spinlock_unlock(&cmd_lock); |
291 | spinlock_unlock(&cmd_lock); |
292 | return 1; |
292 | return 1; |
293 | } |
293 | } |
294 | 294 | ||
295 | /** Kernel console managing thread. |
295 | /** Kernel console managing thread. |
296 | * |
296 | * |
297 | * @param arg Not used. |
297 | * @param arg Not used. |
298 | */ |
298 | */ |
299 | void kconsole(void *arg) |
299 | void kconsole(void *arg) |
300 | { |
300 | { |
301 | char cmdline[MAX_CMDLINE+1]; |
301 | char cmdline[MAX_CMDLINE+1]; |
302 | cmd_info_t *cmd_info; |
302 | cmd_info_t *cmd_info; |
303 | count_t len; |
303 | count_t len; |
304 | 304 | ||
305 | if (!stdin) { |
305 | if (!stdin) { |
306 | printf("%s: no stdin\n", __FUNCTION__); |
306 | printf("%s: no stdin\n", __FUNCTION__); |
307 | return; |
307 | return; |
308 | } |
308 | } |
309 | 309 | ||
310 | while (true) { |
310 | while (true) { |
311 | printf("%s> ", __FUNCTION__); |
311 | printf("%s> ", __FUNCTION__); |
312 | if (!(len = gets(stdin, cmdline, sizeof(cmdline)))) |
312 | if (!(len = gets(stdin, cmdline, sizeof(cmdline)))) |
313 | continue; |
313 | continue; |
314 | cmdline[len] = '\0'; |
314 | cmdline[len] = '\0'; |
315 | cmd_info = parse_cmdline(cmdline, len); |
315 | cmd_info = parse_cmdline(cmdline, len); |
316 | if (!cmd_info) |
316 | if (!cmd_info) |
317 | continue; |
317 | continue; |
318 | (void) cmd_info->func(cmd_info->argv); |
318 | (void) cmd_info->func(cmd_info->argv); |
319 | } |
319 | } |
320 | } |
320 | } |
321 | 321 | ||
322 | static int parse_int_arg(char *text, size_t len, __native *result) |
322 | static int parse_int_arg(char *text, size_t len, __native *result) |
323 | { |
323 | { |
324 | char symname[MAX_SYMBOL_NAME]; |
324 | char symname[MAX_SYMBOL_NAME]; |
325 | __address symaddr; |
325 | __address symaddr; |
326 | bool isaddr = false; |
326 | bool isaddr = false; |
- | 327 | bool isptr = false; |
|
327 | 328 | ||
328 | /* If we get a name, try to find it in symbol table */ |
329 | /* If we get a name, try to find it in symbol table */ |
329 | if (text[0] < '0' | text[0] > '9') { |
330 | if (text[0] < '0' | text[0] > '9') { |
330 | if (text[0] == '&') { |
331 | if (text[0] == '&') { |
331 | isaddr = true; |
332 | isaddr = true; |
332 | text++;len--; |
333 | text++;len--; |
- | 334 | } else if (text[0] == '*') { |
|
- | 335 | isptr = true; |
|
- | 336 | text++;len--; |
|
333 | } |
337 | } |
334 | strncpy(symname, text, min(len+1, MAX_SYMBOL_NAME)); |
338 | strncpy(symname, text, min(len+1, MAX_SYMBOL_NAME)); |
335 | symaddr = get_symbol_addr(symname); |
339 | symaddr = get_symbol_addr(symname); |
336 | if (!symaddr) { |
340 | if (!symaddr) { |
337 | printf("Symbol %s not found.\n",symname); |
341 | printf("Symbol %s not found.\n",symname); |
338 | return -1; |
342 | return -1; |
339 | } |
343 | } |
340 | if (symaddr == (__address) -1) { |
344 | if (symaddr == (__address) -1) { |
341 | printf("Duplicate symbol %s.\n",symname); |
345 | printf("Duplicate symbol %s.\n",symname); |
342 | symtab_print_search(symname); |
346 | symtab_print_search(symname); |
343 | return -1; |
347 | return -1; |
344 | } |
348 | } |
345 | if (isaddr) |
349 | if (isaddr) |
346 | *result = (__native)symaddr; |
350 | *result = (__native)symaddr; |
- | 351 | else if (isptr) |
|
- | 352 | *result = **((__native **)symaddr); |
|
347 | else |
353 | else |
348 | *result = *((__native *)symaddr); |
354 | *result = *((__native *)symaddr); |
349 | } else /* It's a number - convert it */ |
355 | } else /* It's a number - convert it */ |
350 | *result = atoi(text); |
356 | *result = atoi(text); |
351 | return 0; |
357 | return 0; |
352 | } |
358 | } |
353 | 359 | ||
354 | /** Parse command line. |
360 | /** Parse command line. |
355 | * |
361 | * |
356 | * @param cmdline Command line as read from input device. |
362 | * @param cmdline Command line as read from input device. |
357 | * @param len Command line length. |
363 | * @param len Command line length. |
358 | * |
364 | * |
359 | * @return Structure describing the command. |
365 | * @return Structure describing the command. |
360 | */ |
366 | */ |
361 | cmd_info_t *parse_cmdline(char *cmdline, size_t len) |
367 | cmd_info_t *parse_cmdline(char *cmdline, size_t len) |
362 | { |
368 | { |
363 | index_t start = 0, end = 0; |
369 | index_t start = 0, end = 0; |
364 | cmd_info_t *cmd = NULL; |
370 | cmd_info_t *cmd = NULL; |
365 | link_t *cur; |
371 | link_t *cur; |
366 | ipl_t ipl; |
372 | ipl_t ipl; |
367 | int i; |
373 | int i; |
368 | 374 | ||
369 | if (!parse_argument(cmdline, len, &start, &end)) { |
375 | if (!parse_argument(cmdline, len, &start, &end)) { |
370 | /* Command line did not contain alphanumeric word. */ |
376 | /* Command line did not contain alphanumeric word. */ |
371 | return NULL; |
377 | return NULL; |
372 | } |
378 | } |
373 | 379 | ||
374 | spinlock_lock(&cmd_lock); |
380 | spinlock_lock(&cmd_lock); |
375 | 381 | ||
376 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
382 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
377 | cmd_info_t *hlp; |
383 | cmd_info_t *hlp; |
378 | 384 | ||
379 | hlp = list_get_instance(cur, cmd_info_t, link); |
385 | hlp = list_get_instance(cur, cmd_info_t, link); |
380 | spinlock_lock(&hlp->lock); |
386 | spinlock_lock(&hlp->lock); |
381 | 387 | ||
382 | if (strncmp(hlp->name, &cmdline[start], (end - start) + 1) == 0) { |
388 | if (strncmp(hlp->name, &cmdline[start], (end - start) + 1) == 0) { |
383 | cmd = hlp; |
389 | cmd = hlp; |
384 | break; |
390 | break; |
385 | } |
391 | } |
386 | 392 | ||
387 | spinlock_unlock(&hlp->lock); |
393 | spinlock_unlock(&hlp->lock); |
388 | } |
394 | } |
389 | 395 | ||
390 | spinlock_unlock(&cmd_lock); |
396 | spinlock_unlock(&cmd_lock); |
391 | 397 | ||
392 | if (!cmd) { |
398 | if (!cmd) { |
393 | /* Unknown command. */ |
399 | /* Unknown command. */ |
394 | printf("Unknown command.\n"); |
400 | printf("Unknown command.\n"); |
395 | return NULL; |
401 | return NULL; |
396 | } |
402 | } |
397 | 403 | ||
398 | /* cmd == hlp is locked */ |
404 | /* cmd == hlp is locked */ |
399 | 405 | ||
400 | /* |
406 | /* |
401 | * The command line must be further analyzed and |
407 | * The command line must be further analyzed and |
402 | * the parameters therefrom must be matched and |
408 | * the parameters therefrom must be matched and |
403 | * converted to those specified in the cmd info |
409 | * converted to those specified in the cmd info |
404 | * structure. |
410 | * structure. |
405 | */ |
411 | */ |
406 | 412 | ||
407 | for (i = 0; i < cmd->argc; i++) { |
413 | for (i = 0; i < cmd->argc; i++) { |
408 | char *buf; |
414 | char *buf; |
409 | start = end + 1; |
415 | start = end + 1; |
410 | if (!parse_argument(cmdline, len, &start, &end)) { |
416 | if (!parse_argument(cmdline, len, &start, &end)) { |
411 | printf("Too few arguments.\n"); |
417 | printf("Too few arguments.\n"); |
412 | spinlock_unlock(&cmd->lock); |
418 | spinlock_unlock(&cmd->lock); |
413 | return NULL; |
419 | return NULL; |
414 | } |
420 | } |
415 | 421 | ||
416 | switch (cmd->argv[i].type) { |
422 | switch (cmd->argv[i].type) { |
417 | case ARG_TYPE_STRING: |
423 | case ARG_TYPE_STRING: |
418 | buf = cmd->argv[i].buffer; |
424 | buf = cmd->argv[i].buffer; |
419 | strncpy(buf, (const char *) &cmdline[start], min((end - start) + 2, cmd->argv[i].len)); |
425 | strncpy(buf, (const char *) &cmdline[start], min((end - start) + 2, cmd->argv[i].len)); |
420 | buf[min((end - start) + 1, cmd->argv[i].len - 1)] = '\0'; |
426 | buf[min((end - start) + 1, cmd->argv[i].len - 1)] = '\0'; |
421 | break; |
427 | break; |
422 | case ARG_TYPE_INT: |
428 | case ARG_TYPE_INT: |
423 | if (parse_int_arg(cmdline+start, end-start+1, |
429 | if (parse_int_arg(cmdline+start, end-start+1, |
424 | &cmd->argv[i].intval)) |
430 | &cmd->argv[i].intval)) |
425 | return NULL; |
431 | return NULL; |
426 | break; |
432 | break; |
427 | case ARG_TYPE_VAR: |
433 | case ARG_TYPE_VAR: |
428 | if (start != end && cmdline[start] == '"' && cmdline[end] == '"') { |
434 | if (start != end && cmdline[start] == '"' && cmdline[end] == '"') { |
429 | buf = cmd->argv[i].buffer; |
435 | buf = cmd->argv[i].buffer; |
430 | strncpy(buf, (const char *) &cmdline[start+1], |
436 | strncpy(buf, (const char *) &cmdline[start+1], |
431 | min((end-start), cmd->argv[i].len)); |
437 | min((end-start), cmd->argv[i].len)); |
432 | buf[min((end - start), cmd->argv[i].len - 1)] = '\0'; |
438 | buf[min((end - start), cmd->argv[i].len - 1)] = '\0'; |
433 | cmd->argv[i].intval = (__native) buf; |
439 | cmd->argv[i].intval = (__native) buf; |
434 | cmd->argv[i].vartype = ARG_TYPE_STRING; |
440 | cmd->argv[i].vartype = ARG_TYPE_STRING; |
435 | } else if (!parse_int_arg(cmdline+start, end-start+1, |
441 | } else if (!parse_int_arg(cmdline+start, end-start+1, |
436 | &cmd->argv[i].intval)) |
442 | &cmd->argv[i].intval)) |
437 | cmd->argv[i].vartype = ARG_TYPE_INT; |
443 | cmd->argv[i].vartype = ARG_TYPE_INT; |
438 | else { |
444 | else { |
439 | printf("Unrecognized variable argument.\n"); |
445 | printf("Unrecognized variable argument.\n"); |
440 | return NULL; |
446 | return NULL; |
441 | } |
447 | } |
442 | break; |
448 | break; |
443 | case ARG_TYPE_INVALID: |
449 | case ARG_TYPE_INVALID: |
444 | default: |
450 | default: |
445 | printf("invalid argument type\n"); |
451 | printf("invalid argument type\n"); |
446 | return NULL; |
452 | return NULL; |
447 | break; |
453 | break; |
448 | } |
454 | } |
449 | } |
455 | } |
450 | 456 | ||
451 | start = end + 1; |
457 | start = end + 1; |
452 | if (parse_argument(cmdline, len, &start, &end)) { |
458 | if (parse_argument(cmdline, len, &start, &end)) { |
453 | printf("Too many arguments.\n"); |
459 | printf("Too many arguments.\n"); |
454 | spinlock_unlock(&cmd->lock); |
460 | spinlock_unlock(&cmd->lock); |
455 | return NULL; |
461 | return NULL; |
456 | } |
462 | } |
457 | 463 | ||
458 | spinlock_unlock(&cmd->lock); |
464 | spinlock_unlock(&cmd->lock); |
459 | return cmd; |
465 | return cmd; |
460 | } |
466 | } |
461 | 467 | ||
462 | /** Parse argument. |
468 | /** Parse argument. |
463 | * |
469 | * |
464 | * Find start and end positions of command line argument. |
470 | * Find start and end positions of command line argument. |
465 | * |
471 | * |
466 | * @param cmdline Command line as read from the input device. |
472 | * @param cmdline Command line as read from the input device. |
467 | * @param len Number of characters in cmdline. |
473 | * @param len Number of characters in cmdline. |
468 | * @param start On entry, 'start' contains pointer to the index |
474 | * @param start On entry, 'start' contains pointer to the index |
469 | * of first unprocessed character of cmdline. |
475 | * of first unprocessed character of cmdline. |
470 | * On successful exit, it marks beginning of the next argument. |
476 | * On successful exit, it marks beginning of the next argument. |
471 | * @param end Undefined on entry. On exit, 'end' points to the last character |
477 | * @param end Undefined on entry. On exit, 'end' points to the last character |
472 | * of the next argument. |
478 | * of the next argument. |
473 | * |
479 | * |
474 | * @return false on failure, true on success. |
480 | * @return false on failure, true on success. |
475 | */ |
481 | */ |
476 | bool parse_argument(char *cmdline, size_t len, index_t *start, index_t *end) |
482 | bool parse_argument(char *cmdline, size_t len, index_t *start, index_t *end) |
477 | { |
483 | { |
478 | int i; |
484 | int i; |
479 | bool found_start = false; |
485 | bool found_start = false; |
480 | 486 | ||
481 | ASSERT(start != NULL); |
487 | ASSERT(start != NULL); |
482 | ASSERT(end != NULL); |
488 | ASSERT(end != NULL); |
483 | 489 | ||
484 | for (i = *start; i < len; i++) { |
490 | for (i = *start; i < len; i++) { |
485 | if (!found_start) { |
491 | if (!found_start) { |
486 | if (is_white(cmdline[i])) |
492 | if (is_white(cmdline[i])) |
487 | (*start)++; |
493 | (*start)++; |
488 | else |
494 | else |
489 | found_start = true; |
495 | found_start = true; |
490 | } else { |
496 | } else { |
491 | if (is_white(cmdline[i])) |
497 | if (is_white(cmdline[i])) |
492 | break; |
498 | break; |
493 | } |
499 | } |
494 | } |
500 | } |
495 | *end = i - 1; |
501 | *end = i - 1; |
496 | 502 | ||
497 | return found_start; |
503 | return found_start; |
498 | } |
504 | } |
499 | 505 | ||
500 | 506 | ||
501 | /** List supported commands. |
507 | /** List supported commands. |
502 | * |
508 | * |
503 | * @param argv Argument vector. |
509 | * @param argv Argument vector. |
504 | * |
510 | * |
505 | * @return 0 on failure, 1 on success. |
511 | * @return 0 on failure, 1 on success. |
506 | */ |
512 | */ |
507 | int cmd_help(cmd_arg_t *argv) |
513 | int cmd_help(cmd_arg_t *argv) |
508 | { |
514 | { |
509 | link_t *cur; |
515 | link_t *cur; |
510 | ipl_t ipl; |
516 | ipl_t ipl; |
511 | 517 | ||
512 | spinlock_lock(&cmd_lock); |
518 | spinlock_lock(&cmd_lock); |
513 | 519 | ||
514 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
520 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
515 | cmd_info_t *hlp; |
521 | cmd_info_t *hlp; |
516 | 522 | ||
517 | hlp = list_get_instance(cur, cmd_info_t, link); |
523 | hlp = list_get_instance(cur, cmd_info_t, link); |
518 | spinlock_lock(&hlp->lock); |
524 | spinlock_lock(&hlp->lock); |
519 | 525 | ||
520 | printf("%s - %s\n", hlp->name, hlp->description); |
526 | printf("%s - %s\n", hlp->name, hlp->description); |
521 | 527 | ||
522 | spinlock_unlock(&hlp->lock); |
528 | spinlock_unlock(&hlp->lock); |
523 | } |
529 | } |
524 | 530 | ||
525 | spinlock_unlock(&cmd_lock); |
531 | spinlock_unlock(&cmd_lock); |
526 | 532 | ||
527 | return 1; |
533 | return 1; |
528 | } |
534 | } |
529 | 535 | ||
530 | /** Describe specified command. |
536 | /** Describe specified command. |
531 | * |
537 | * |
532 | * @param argv Argument vector. |
538 | * @param argv Argument vector. |
533 | * |
539 | * |
534 | * @return 0 on failure, 1 on success. |
540 | * @return 0 on failure, 1 on success. |
535 | */ |
541 | */ |
536 | int cmd_desc(cmd_arg_t *argv) |
542 | int cmd_desc(cmd_arg_t *argv) |
537 | { |
543 | { |
538 | link_t *cur; |
544 | link_t *cur; |
539 | ipl_t ipl; |
545 | ipl_t ipl; |
540 | 546 | ||
541 | spinlock_lock(&cmd_lock); |
547 | spinlock_lock(&cmd_lock); |
542 | 548 | ||
543 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
549 | for (cur = cmd_head.next; cur != &cmd_head; cur = cur->next) { |
544 | cmd_info_t *hlp; |
550 | cmd_info_t *hlp; |
545 | 551 | ||
546 | hlp = list_get_instance(cur, cmd_info_t, link); |
552 | hlp = list_get_instance(cur, cmd_info_t, link); |
547 | spinlock_lock(&hlp->lock); |
553 | spinlock_lock(&hlp->lock); |
548 | 554 | ||
549 | if (strncmp(hlp->name, (const char *) argv->buffer, strlen(hlp->name)) == 0) { |
555 | if (strncmp(hlp->name, (const char *) argv->buffer, strlen(hlp->name)) == 0) { |
550 | printf("%s - %s\n", hlp->name, hlp->description); |
556 | printf("%s - %s\n", hlp->name, hlp->description); |
551 | if (hlp->help) |
557 | if (hlp->help) |
552 | hlp->help(); |
558 | hlp->help(); |
553 | spinlock_unlock(&hlp->lock); |
559 | spinlock_unlock(&hlp->lock); |
554 | break; |
560 | break; |
555 | } |
561 | } |
556 | 562 | ||
557 | spinlock_unlock(&hlp->lock); |
563 | spinlock_unlock(&hlp->lock); |
558 | } |
564 | } |
559 | 565 | ||
560 | spinlock_unlock(&cmd_lock); |
566 | spinlock_unlock(&cmd_lock); |
561 | 567 | ||
562 | return 1; |
568 | return 1; |
563 | } |
569 | } |
564 | 570 | ||
565 | /** Search symbol table */ |
571 | /** Search symbol table */ |
566 | int cmd_symaddr(cmd_arg_t *argv) |
572 | int cmd_symaddr(cmd_arg_t *argv) |
567 | { |
573 | { |
568 | __address symaddr; |
574 | __address symaddr; |
569 | char *symbol; |
575 | char *symbol; |
570 | 576 | ||
571 | symtab_print_search(argv->buffer); |
577 | symtab_print_search(argv->buffer); |
572 | 578 | ||
573 | return 1; |
579 | return 1; |
574 | } |
580 | } |
575 | 581 | ||
576 | /** Call function with zero parameters */ |
582 | /** Call function with zero parameters */ |
577 | int cmd_call0(cmd_arg_t *argv) |
583 | int cmd_call0(cmd_arg_t *argv) |
578 | { |
584 | { |
579 | __address symaddr; |
585 | __address symaddr; |
580 | char *symbol; |
586 | char *symbol; |
581 | __native (*f)(void); |
587 | __native (*f)(void); |
582 | 588 | ||
583 | symaddr = get_symbol_addr(argv->buffer); |
589 | symaddr = get_symbol_addr(argv->buffer); |
584 | if (!symaddr) |
590 | if (!symaddr) |
585 | printf("Symbol %s not found.\n", argv->buffer); |
591 | printf("Symbol %s not found.\n", argv->buffer); |
586 | else if (symaddr == (__address) -1) { |
592 | else if (symaddr == (__address) -1) { |
587 | symtab_print_search(argv->buffer); |
593 | symtab_print_search(argv->buffer); |
588 | printf("Duplicate symbol, be more specific.\n"); |
594 | printf("Duplicate symbol, be more specific.\n"); |
589 | } else { |
595 | } else { |
590 | symbol = get_symtab_entry(symaddr); |
596 | symbol = get_symtab_entry(symaddr); |
591 | printf("Calling f(): 0x%p: %s\n", symaddr, symbol); |
597 | printf("Calling f(): 0x%p: %s\n", symaddr, symbol); |
592 | f = (__native (*)(void)) symaddr; |
598 | f = (__native (*)(void)) symaddr; |
593 | printf("Result: 0x%X\n", f()); |
599 | printf("Result: 0x%X\n", f()); |
594 | } |
600 | } |
595 | 601 | ||
596 | return 1; |
602 | return 1; |
597 | } |
603 | } |
598 | 604 | ||
599 | /** Call function with one parameter */ |
605 | /** Call function with one parameter */ |
600 | int cmd_call1(cmd_arg_t *argv) |
606 | int cmd_call1(cmd_arg_t *argv) |
601 | { |
607 | { |
602 | __address symaddr; |
608 | __address symaddr; |
603 | char *symbol; |
609 | char *symbol; |
604 | __native (*f)(__native); |
610 | __native (*f)(__native); |
605 | __native arg1 = argv[1].intval; |
611 | __native arg1 = argv[1].intval; |
606 | 612 | ||
607 | symaddr = get_symbol_addr(argv->buffer); |
613 | symaddr = get_symbol_addr(argv->buffer); |
608 | if (!symaddr) |
614 | if (!symaddr) |
609 | printf("Symbol %s not found.\n", argv->buffer); |
615 | printf("Symbol %s not found.\n", argv->buffer); |
610 | else if (symaddr == (__address) -1) { |
616 | else if (symaddr == (__address) -1) { |
611 | symtab_print_search(argv->buffer); |
617 | symtab_print_search(argv->buffer); |
612 | printf("Duplicate symbol, be more specific.\n"); |
618 | printf("Duplicate symbol, be more specific.\n"); |
613 | } else { |
619 | } else { |
614 | symbol = get_symtab_entry(symaddr); |
620 | symbol = get_symtab_entry(symaddr); |
615 | printf("Calling f(0x%x): 0x%p: %s\n", arg1, symaddr, symbol); |
621 | printf("Calling f(0x%x): 0x%p: %s\n", arg1, symaddr, symbol); |
616 | f = (__native (*)(__native)) symaddr; |
622 | f = (__native (*)(__native)) symaddr; |
617 | printf("Result: 0x%x\n", f(arg1)); |
623 | printf("Result: 0x%x\n", f(arg1)); |
618 | } |
624 | } |
619 | 625 | ||
620 | return 1; |
626 | return 1; |
621 | } |
627 | } |
622 | 628 | ||
623 | /** Call function with two parameters */ |
629 | /** Call function with two parameters */ |
624 | int cmd_call2(cmd_arg_t *argv) |
630 | int cmd_call2(cmd_arg_t *argv) |
625 | { |
631 | { |
626 | __address symaddr; |
632 | __address symaddr; |
627 | char *symbol; |
633 | char *symbol; |
628 | __native (*f)(__native,__native); |
634 | __native (*f)(__native,__native); |
629 | __native arg1 = argv[1].intval; |
635 | __native arg1 = argv[1].intval; |
630 | __native arg2 = argv[2].intval; |
636 | __native arg2 = argv[2].intval; |
631 | 637 | ||
632 | symaddr = get_symbol_addr(argv->buffer); |
638 | symaddr = get_symbol_addr(argv->buffer); |
633 | if (!symaddr) |
639 | if (!symaddr) |
634 | printf("Symbol %s not found.\n", argv->buffer); |
640 | printf("Symbol %s not found.\n", argv->buffer); |
635 | else if (symaddr == (__address) -1) { |
641 | else if (symaddr == (__address) -1) { |
636 | symtab_print_search(argv->buffer); |
642 | symtab_print_search(argv->buffer); |
637 | printf("Duplicate symbol, be more specific.\n"); |
643 | printf("Duplicate symbol, be more specific.\n"); |
638 | } else { |
644 | } else { |
639 | symbol = get_symtab_entry(symaddr); |
645 | symbol = get_symtab_entry(symaddr); |
640 | printf("Calling f(0x%x,0x%x): 0x%p: %s\n", |
646 | printf("Calling f(0x%x,0x%x): 0x%p: %s\n", |
641 | arg1, arg2, symaddr, symbol); |
647 | arg1, arg2, symaddr, symbol); |
642 | f = (__native (*)(__native,__native)) symaddr; |
648 | f = (__native (*)(__native,__native)) symaddr; |
643 | printf("Result: 0x%x\n", f(arg1, arg2)); |
649 | printf("Result: 0x%x\n", f(arg1, arg2)); |
644 | } |
650 | } |
645 | 651 | ||
646 | return 1; |
652 | return 1; |
647 | } |
653 | } |
648 | 654 | ||
649 | 655 | ||
650 | /** Print detailed description of 'describe' command. */ |
656 | /** Print detailed description of 'describe' command. */ |
651 | void desc_help(void) |
657 | void desc_help(void) |
652 | { |
658 | { |
653 | printf("Syntax: describe command_name\n"); |
659 | printf("Syntax: describe command_name\n"); |
654 | } |
660 | } |
655 | 661 | ||
656 | /** Halt the kernel. |
662 | /** Halt the kernel. |
657 | * |
663 | * |
658 | * @param argv Argument vector (ignored). |
664 | * @param argv Argument vector (ignored). |
659 | * |
665 | * |
660 | * @return 0 on failure, 1 on success (never returns). |
666 | * @return 0 on failure, 1 on success (never returns). |
661 | */ |
667 | */ |
662 | int cmd_halt(cmd_arg_t *argv) |
668 | int cmd_halt(cmd_arg_t *argv) |
663 | { |
669 | { |
664 | halt(); |
670 | halt(); |
665 | return 1; |
671 | return 1; |
666 | } |
672 | } |
667 | 673 |