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4a8f6654 AC |
1 | /* MI Interpreter Definitions and Commands for GDB, the GNU debugger. |
2 | ||
6aba47ca | 3 | Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc. |
4a8f6654 AC |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
1caae165 EZ |
19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
4a8f6654 AC |
21 | |
22 | #include "defs.h" | |
23 | #include "gdb_string.h" | |
24 | #include "interps.h" | |
25 | #include "event-top.h" | |
26 | #include "event-loop.h" | |
27 | #include "inferior.h" | |
28 | #include "ui-out.h" | |
29 | #include "top.h" | |
c1043fc2 | 30 | #include "exceptions.h" |
4a8f6654 AC |
31 | #include "mi-main.h" |
32 | #include "mi-cmds.h" | |
33 | #include "mi-out.h" | |
34 | #include "mi-console.h" | |
35 | ||
36 | struct mi_interp | |
37 | { | |
38 | /* MI's output channels */ | |
39 | struct ui_file *out; | |
40 | struct ui_file *err; | |
41 | struct ui_file *log; | |
42 | struct ui_file *targ; | |
43 | struct ui_file *event_channel; | |
44 | ||
45 | /* This is the interpreter for the mi... */ | |
46 | struct interp *mi2_interp; | |
47 | struct interp *mi1_interp; | |
48 | struct interp *mi_interp; | |
49 | }; | |
50 | ||
51 | /* These are the interpreter setup, etc. functions for the MI interpreter */ | |
52 | static void mi_execute_command_wrapper (char *cmd); | |
53 | static void mi_command_loop (int mi_version); | |
4a8f6654 AC |
54 | |
55 | /* These are hooks that we put in place while doing interpreter_exec | |
56 | so we can report interesting things that happened "behind the mi's | |
57 | back" in this command */ | |
bee0189a DJ |
58 | static int mi_interp_query_hook (const char *ctlstr, va_list ap) |
59 | ATTR_FORMAT (printf, 1, 0); | |
4a8f6654 | 60 | |
f786f615 | 61 | static void mi3_command_loop (void); |
4a8f6654 AC |
62 | static void mi2_command_loop (void); |
63 | static void mi1_command_loop (void); | |
64 | ||
65 | static void mi_insert_notify_hooks (void); | |
66 | static void mi_remove_notify_hooks (void); | |
67 | ||
68 | static void * | |
69 | mi_interpreter_init (void) | |
70 | { | |
71 | struct mi_interp *mi = XMALLOC (struct mi_interp); | |
72 | ||
4a8f6654 AC |
73 | /* HACK: We need to force stdout/stderr to point at the console. This avoids |
74 | any potential side effects caused by legacy code that is still | |
75 | using the TUI / fputs_unfiltered_hook. So we set up output channels for | |
76 | this now, and swap them in when we are run. */ | |
77 | ||
78 | raw_stdout = stdio_fileopen (stdout); | |
79 | ||
80 | /* Create MI channels */ | |
81 | mi->out = mi_console_file_new (raw_stdout, "~", '"'); | |
82 | mi->err = mi_console_file_new (raw_stdout, "&", '"'); | |
83 | mi->log = mi->err; | |
84 | mi->targ = mi_console_file_new (raw_stdout, "@", '"'); | |
85 | mi->event_channel = mi_console_file_new (raw_stdout, "=", 0); | |
86 | ||
87 | return mi; | |
88 | } | |
89 | ||
90 | static int | |
91 | mi_interpreter_resume (void *data) | |
92 | { | |
93 | struct mi_interp *mi = data; | |
94 | /* As per hack note in mi_interpreter_init, swap in the output channels... */ | |
95 | ||
96 | gdb_setup_readline (); | |
97 | ||
362646f5 AC |
98 | /* These overwrite some of the initialization done in |
99 | _intialize_event_loop. */ | |
100 | call_readline = gdb_readline2; | |
101 | input_handler = mi_execute_command_wrapper; | |
102 | add_file_handler (input_fd, stdin_event_handler, 0); | |
103 | async_command_editing_p = 0; | |
104 | /* FIXME: This is a total hack for now. PB's use of the MI | |
105 | implicitly relies on a bug in the async support which allows | |
106 | asynchronous commands to leak through the commmand loop. The bug | |
107 | involves (but is not limited to) the fact that sync_execution was | |
108 | erroneously initialized to 0. Duplicate by initializing it thus | |
109 | here... */ | |
110 | sync_execution = 0; | |
4a8f6654 AC |
111 | |
112 | gdb_stdout = mi->out; | |
113 | /* Route error and log output through the MI */ | |
114 | gdb_stderr = mi->err; | |
115 | gdb_stdlog = mi->log; | |
116 | /* Route target output through the MI. */ | |
117 | gdb_stdtarg = mi->targ; | |
1f20321b FR |
118 | /* Route target error through the MI as well. */ |
119 | gdb_stdtargerr = mi->targ; | |
4a8f6654 AC |
120 | |
121 | /* Replace all the hooks that we know about. There really needs to | |
122 | be a better way of doing this... */ | |
123 | clear_interpreter_hooks (); | |
124 | ||
9a4105ab | 125 | deprecated_show_load_progress = mi_load_progress; |
4a8f6654 AC |
126 | |
127 | /* If we're _the_ interpreter, take control. */ | |
128 | if (current_interp_named_p (INTERP_MI1)) | |
9a4105ab | 129 | deprecated_command_loop_hook = mi1_command_loop; |
f786f615 | 130 | else if (current_interp_named_p (INTERP_MI2)) |
9a4105ab | 131 | deprecated_command_loop_hook = mi2_command_loop; |
f786f615 | 132 | else if (current_interp_named_p (INTERP_MI3)) |
9a4105ab | 133 | deprecated_command_loop_hook = mi3_command_loop; |
4a8f6654 | 134 | else |
9a4105ab | 135 | deprecated_command_loop_hook = mi2_command_loop; |
4a8f6654 AC |
136 | |
137 | return 1; | |
138 | } | |
139 | ||
140 | static int | |
141 | mi_interpreter_suspend (void *data) | |
142 | { | |
143 | gdb_disable_readline (); | |
144 | return 1; | |
145 | } | |
146 | ||
71fff37b | 147 | static struct gdb_exception |
4a8f6654 AC |
148 | mi_interpreter_exec (void *data, const char *command) |
149 | { | |
71fff37b | 150 | static struct gdb_exception ok; |
4a8f6654 AC |
151 | char *tmp = alloca (strlen (command) + 1); |
152 | strcpy (tmp, command); | |
153 | mi_execute_command_wrapper (tmp); | |
c1043fc2 | 154 | return exception_none; |
4a8f6654 AC |
155 | } |
156 | ||
157 | /* Never display the default gdb prompt in mi case. */ | |
158 | static int | |
159 | mi_interpreter_prompt_p (void *data) | |
160 | { | |
161 | return 0; | |
162 | } | |
163 | ||
164 | static void | |
165 | mi_interpreter_exec_continuation (struct continuation_arg *arg) | |
166 | { | |
167 | bpstat_do_actions (&stop_bpstat); | |
168 | if (!target_executing) | |
169 | { | |
170 | fputs_unfiltered ("*stopped", raw_stdout); | |
171 | mi_out_put (uiout, raw_stdout); | |
172 | fputs_unfiltered ("\n", raw_stdout); | |
173 | fputs_unfiltered ("(gdb) \n", raw_stdout); | |
174 | gdb_flush (raw_stdout); | |
175 | do_exec_cleanups (ALL_CLEANUPS); | |
176 | } | |
177 | else if (target_can_async_p ()) | |
178 | { | |
179 | add_continuation (mi_interpreter_exec_continuation, NULL); | |
180 | } | |
181 | } | |
182 | ||
183 | enum mi_cmd_result | |
184 | mi_cmd_interpreter_exec (char *command, char **argv, int argc) | |
185 | { | |
186 | struct interp *interp_to_use; | |
187 | enum mi_cmd_result result = MI_CMD_DONE; | |
188 | int i; | |
189 | struct interp_procs *procs; | |
190 | ||
191 | if (argc < 2) | |
192 | { | |
c6902d46 | 193 | mi_error_message = xstrprintf ("mi_cmd_interpreter_exec: Usage: -interpreter-exec interp command"); |
4a8f6654 AC |
194 | return MI_CMD_ERROR; |
195 | } | |
196 | ||
197 | interp_to_use = interp_lookup (argv[0]); | |
198 | if (interp_to_use == NULL) | |
199 | { | |
c6902d46 | 200 | mi_error_message = xstrprintf ("mi_cmd_interpreter_exec: could not find interpreter \"%s\"", argv[0]); |
4a8f6654 AC |
201 | return MI_CMD_ERROR; |
202 | } | |
203 | ||
204 | if (!interp_exec_p (interp_to_use)) | |
205 | { | |
c6902d46 AC |
206 | mi_error_message = xstrprintf ("mi_cmd_interpreter_exec: interpreter \"%s\" does not support command execution", |
207 | argv[0]); | |
4a8f6654 AC |
208 | return MI_CMD_ERROR; |
209 | } | |
210 | ||
211 | /* Insert the MI out hooks, making sure to also call the interpreter's hooks | |
212 | if it has any. */ | |
213 | /* KRS: We shouldn't need this... Events should be installed and they should | |
214 | just ALWAYS fire something out down the MI channel... */ | |
215 | mi_insert_notify_hooks (); | |
216 | ||
217 | /* Now run the code... */ | |
218 | ||
219 | for (i = 1; i < argc; i++) | |
220 | { | |
4a8f6654 AC |
221 | /* We had to set sync_execution = 0 for the mi (well really for Project |
222 | Builder's use of the mi - particularly so interrupting would work. | |
223 | But for console commands to work, we need to initialize it to 1 - | |
224 | since that is what the cli expects - before running the command, | |
225 | and then set it back to 0 when we are done. */ | |
226 | sync_execution = 1; | |
c1043fc2 | 227 | { |
71fff37b | 228 | struct gdb_exception e = interp_exec (interp_to_use, argv[i]); |
c1043fc2 AC |
229 | if (e.reason < 0) |
230 | { | |
6b1b7650 | 231 | mi_error_message = xstrdup (e.message); |
c1043fc2 AC |
232 | result = MI_CMD_ERROR; |
233 | break; | |
234 | } | |
235 | } | |
4a8f6654 AC |
236 | do_exec_error_cleanups (ALL_CLEANUPS); |
237 | sync_execution = 0; | |
238 | } | |
239 | ||
240 | mi_remove_notify_hooks (); | |
241 | ||
242 | /* Okay, now let's see if the command set the inferior going... | |
243 | Tricky point - have to do this AFTER resetting the interpreter, since | |
244 | changing the interpreter will clear out all the continuations for | |
245 | that interpreter... */ | |
246 | ||
247 | if (target_can_async_p () && target_executing) | |
248 | { | |
249 | fputs_unfiltered ("^running\n", raw_stdout); | |
250 | add_continuation (mi_interpreter_exec_continuation, NULL); | |
251 | } | |
252 | ||
253 | return result; | |
254 | } | |
255 | ||
256 | /* | |
257 | * mi_insert_notify_hooks - This inserts a number of hooks that are meant to produce | |
258 | * async-notify ("=") MI messages while running commands in another interpreter | |
259 | * using mi_interpreter_exec. The canonical use for this is to allow access to | |
260 | * the gdb CLI interpreter from within the MI, while still producing MI style output | |
261 | * when actions in the CLI command change gdb's state. | |
262 | */ | |
263 | ||
264 | static void | |
265 | mi_insert_notify_hooks (void) | |
266 | { | |
9a4105ab | 267 | deprecated_query_hook = mi_interp_query_hook; |
4a8f6654 AC |
268 | } |
269 | ||
270 | static void | |
11308a41 | 271 | mi_remove_notify_hooks (void) |
4a8f6654 | 272 | { |
9a4105ab | 273 | deprecated_query_hook = NULL; |
4a8f6654 AC |
274 | } |
275 | ||
276 | static int | |
277 | mi_interp_query_hook (const char *ctlstr, va_list ap) | |
278 | { | |
279 | return 1; | |
280 | } | |
281 | ||
4a8f6654 AC |
282 | static void |
283 | mi_execute_command_wrapper (char *cmd) | |
284 | { | |
285 | mi_execute_command (cmd, stdin == instream); | |
286 | } | |
287 | ||
288 | static void | |
289 | mi1_command_loop (void) | |
290 | { | |
291 | mi_command_loop (1); | |
292 | } | |
293 | ||
294 | static void | |
295 | mi2_command_loop (void) | |
296 | { | |
297 | mi_command_loop (2); | |
298 | } | |
299 | ||
f786f615 AC |
300 | static void |
301 | mi3_command_loop (void) | |
302 | { | |
303 | mi_command_loop (3); | |
304 | } | |
305 | ||
4a8f6654 AC |
306 | static void |
307 | mi_command_loop (int mi_version) | |
308 | { | |
309 | #if 0 | |
310 | /* HACK: Force stdout/stderr to point at the console. This avoids | |
311 | any potential side effects caused by legacy code that is still | |
312 | using the TUI / fputs_unfiltered_hook */ | |
313 | raw_stdout = stdio_fileopen (stdout); | |
314 | /* Route normal output through the MIx */ | |
315 | gdb_stdout = mi_console_file_new (raw_stdout, "~", '"'); | |
316 | /* Route error and log output through the MI */ | |
317 | gdb_stderr = mi_console_file_new (raw_stdout, "&", '"'); | |
318 | gdb_stdlog = gdb_stderr; | |
319 | /* Route target output through the MI. */ | |
320 | gdb_stdtarg = mi_console_file_new (raw_stdout, "@", '"'); | |
321 | /* HACK: Poke the ui_out table directly. Should we be creating a | |
322 | mi_out object wired up to the above gdb_stdout / gdb_stderr? */ | |
323 | uiout = mi_out_new (mi_version); | |
324 | /* HACK: Override any other interpreter hooks. We need to create a | |
325 | real event table and pass in that. */ | |
9a4105ab AC |
326 | deprecated_init_ui_hook = 0; |
327 | /* deprecated_command_loop_hook = 0; */ | |
328 | deprecated_print_frame_info_listing_hook = 0; | |
329 | deprecated_query_hook = 0; | |
330 | deprecated_warning_hook = 0; | |
331 | deprecated_create_breakpoint_hook = 0; | |
332 | deprecated_delete_breakpoint_hook = 0; | |
333 | deprecated_modify_breakpoint_hook = 0; | |
334 | deprecated_interactive_hook = 0; | |
9a4105ab AC |
335 | deprecated_readline_begin_hook = 0; |
336 | deprecated_readline_hook = 0; | |
337 | deprecated_readline_end_hook = 0; | |
338 | deprecated_register_changed_hook = 0; | |
339 | deprecated_memory_changed_hook = 0; | |
340 | deprecated_context_hook = 0; | |
341 | deprecated_target_wait_hook = 0; | |
342 | deprecated_call_command_hook = 0; | |
343 | deprecated_error_hook = 0; | |
344 | deprecated_error_begin_hook = 0; | |
345 | deprecated_show_load_progress = mi_load_progress; | |
4a8f6654 AC |
346 | #endif |
347 | /* Turn off 8 bit strings in quoted output. Any character with the | |
348 | high bit set is printed using C's octal format. */ | |
349 | sevenbit_strings = 1; | |
350 | /* Tell the world that we're alive */ | |
351 | fputs_unfiltered ("(gdb) \n", raw_stdout); | |
352 | gdb_flush (raw_stdout); | |
362646f5 | 353 | start_event_loop (); |
4a8f6654 AC |
354 | } |
355 | ||
b9362cc7 AC |
356 | extern initialize_file_ftype _initialize_mi_interp; /* -Wmissing-prototypes */ |
357 | ||
4a8f6654 AC |
358 | void |
359 | _initialize_mi_interp (void) | |
360 | { | |
361 | static const struct interp_procs procs = | |
362 | { | |
363 | mi_interpreter_init, /* init_proc */ | |
364 | mi_interpreter_resume, /* resume_proc */ | |
365 | mi_interpreter_suspend, /* suspend_proc */ | |
366 | mi_interpreter_exec, /* exec_proc */ | |
367 | mi_interpreter_prompt_p /* prompt_proc_p */ | |
368 | }; | |
369 | ||
2fcf52f0 | 370 | /* The various interpreter levels. */ |
4a8f6654 | 371 | interp_add (interp_new (INTERP_MI1, NULL, mi_out_new (1), &procs)); |
2fcf52f0 AC |
372 | interp_add (interp_new (INTERP_MI2, NULL, mi_out_new (2), &procs)); |
373 | interp_add (interp_new (INTERP_MI3, NULL, mi_out_new (3), &procs)); | |
4a8f6654 | 374 | |
2fcf52f0 AC |
375 | /* "mi" selects the most recent released version. "mi2" was |
376 | released as part of GDB 6.0. */ | |
377 | interp_add (interp_new (INTERP_MI, NULL, mi_out_new (2), &procs)); | |
4a8f6654 | 378 | } |