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fb40c209 | 1 | /* MI Command Set - stack commands. |
22abf04a | 2 | Copyright 2000, 2002, 2003 Free Software Foundation, Inc. |
ab91fdd5 | 3 | Contributed by Cygnus Solutions (a Red Hat company). |
fb40c209 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 | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "target.h" | |
24 | #include "frame.h" | |
25 | #include "value.h" | |
26 | #include "mi-cmds.h" | |
27 | #include "ui-out.h" | |
e88c90f2 | 28 | #include "symtab.h" |
fe898f56 | 29 | #include "block.h" |
fb40c209 | 30 | |
fb40c209 AC |
31 | /* FIXME: these should go in some .h file but stack.c doesn't have a |
32 | corresponding .h file. These wrappers will be obsolete anyway, once | |
33 | we pull the plug on the sanitization. */ | |
34 | extern void select_frame_command_wrapper (char *, int); | |
fb40c209 AC |
35 | |
36 | static void list_args_or_locals (int locals, int values, struct frame_info *fi); | |
37 | ||
38 | /* Print a list of the stack frames. Args can be none, in which case | |
39 | we want to print the whole backtrace, or a pair of numbers | |
40 | specifying the frame numbers at which to start and stop the | |
41 | display. If the two numbers are equal, a single frame will be | |
42 | displayed. */ | |
43 | enum mi_cmd_result | |
44 | mi_cmd_stack_list_frames (char *command, char **argv, int argc) | |
45 | { | |
46 | int frame_low; | |
47 | int frame_high; | |
48 | int i; | |
6ad4a2cf | 49 | struct cleanup *cleanup_stack; |
fb40c209 AC |
50 | struct frame_info *fi; |
51 | ||
52 | if (!target_has_stack) | |
53 | error ("mi_cmd_stack_list_frames: No stack."); | |
54 | ||
55 | if (argc > 2 || argc == 1) | |
56 | error ("mi_cmd_stack_list_frames: Usage: [FRAME_LOW FRAME_HIGH]"); | |
57 | ||
58 | if (argc == 2) | |
59 | { | |
60 | frame_low = atoi (argv[0]); | |
61 | frame_high = atoi (argv[1]); | |
62 | } | |
63 | else | |
64 | { | |
65 | /* Called with no arguments, it means we want the whole | |
66 | backtrace. */ | |
67 | frame_low = -1; | |
68 | frame_high = -1; | |
69 | } | |
70 | ||
71 | /* Let's position fi on the frame at which to start the | |
72 | display. Could be the innermost frame if the whole stack needs | |
73 | displaying, or if frame_low is 0. */ | |
74 | for (i = 0, fi = get_current_frame (); | |
75 | fi && i < frame_low; | |
76 | i++, fi = get_prev_frame (fi)); | |
77 | ||
78 | if (fi == NULL) | |
79 | error ("mi_cmd_stack_list_frames: Not enough frames in stack."); | |
80 | ||
6ad4a2cf | 81 | cleanup_stack = make_cleanup_ui_out_list_begin_end (uiout, "stack"); |
fb40c209 AC |
82 | |
83 | /* Now let;s print the frames up to frame_high, or until there are | |
84 | frames in the stack. */ | |
85 | for (; | |
86 | fi && (i <= frame_high || frame_high == -1); | |
87 | i++, fi = get_prev_frame (fi)) | |
88 | { | |
89 | QUIT; | |
90 | /* level == i: always print the level 'i' | |
91 | source == LOC_AND_ADDRESS: print the location and the address | |
92 | always, even for level 0. | |
93 | args == 0: don't print the arguments. */ | |
94 | print_frame_info (fi /* frame info */ , | |
95 | i /* level */ , | |
96 | LOC_AND_ADDRESS /* source */ , | |
97 | 0 /* args */ ); | |
98 | } | |
99 | ||
6ad4a2cf | 100 | do_cleanups (cleanup_stack); |
fb40c209 AC |
101 | if (i < frame_high) |
102 | error ("mi_cmd_stack_list_frames: Not enough frames in stack."); | |
103 | ||
104 | return MI_CMD_DONE; | |
105 | } | |
106 | ||
107 | enum mi_cmd_result | |
108 | mi_cmd_stack_info_depth (char *command, char **argv, int argc) | |
109 | { | |
110 | int frame_high; | |
111 | int i; | |
112 | struct frame_info *fi; | |
113 | ||
114 | if (!target_has_stack) | |
115 | error ("mi_cmd_stack_info_depth: No stack."); | |
116 | ||
117 | if (argc > 1) | |
118 | error ("mi_cmd_stack_info_depth: Usage: [MAX_DEPTH]"); | |
119 | ||
120 | if (argc == 1) | |
121 | frame_high = atoi (argv[0]); | |
122 | else | |
123 | /* Called with no arguments, it means we want the real depth of | |
124 | the stack. */ | |
125 | frame_high = -1; | |
126 | ||
127 | for (i = 0, fi = get_current_frame (); | |
128 | fi && (i < frame_high || frame_high == -1); | |
129 | i++, fi = get_prev_frame (fi)) | |
130 | QUIT; | |
131 | ||
132 | ui_out_field_int (uiout, "depth", i); | |
133 | ||
134 | return MI_CMD_DONE; | |
135 | } | |
136 | ||
137 | /* Print a list of the locals for the current frame. With argument of | |
138 | 0, print only the names, with argument of 1 print also the | |
139 | values. */ | |
140 | enum mi_cmd_result | |
141 | mi_cmd_stack_list_locals (char *command, char **argv, int argc) | |
142 | { | |
143 | if (argc != 1) | |
144 | error ("mi_cmd_stack_list_locals: Usage: PRINT_VALUES"); | |
145 | ||
6e7f8b9c | 146 | list_args_or_locals (1, atoi (argv[0]), deprecated_selected_frame); |
fb40c209 AC |
147 | return MI_CMD_DONE; |
148 | } | |
149 | ||
150 | /* Print a list of the arguments for the current frame. With argument | |
151 | of 0, print only the names, with argument of 1 print also the | |
152 | values. */ | |
153 | enum mi_cmd_result | |
154 | mi_cmd_stack_list_args (char *command, char **argv, int argc) | |
155 | { | |
156 | int frame_low; | |
157 | int frame_high; | |
158 | int i; | |
159 | struct frame_info *fi; | |
6ad4a2cf | 160 | struct cleanup *cleanup_stack_args; |
fb40c209 AC |
161 | |
162 | if (argc < 1 || argc > 3 || argc == 2) | |
163 | error ("mi_cmd_stack_list_args: Usage: PRINT_VALUES [FRAME_LOW FRAME_HIGH]"); | |
164 | ||
165 | if (argc == 3) | |
166 | { | |
167 | frame_low = atoi (argv[1]); | |
168 | frame_high = atoi (argv[2]); | |
169 | } | |
170 | else | |
171 | { | |
172 | /* Called with no arguments, it means we want args for the whole | |
173 | backtrace. */ | |
174 | frame_low = -1; | |
175 | frame_high = -1; | |
176 | } | |
177 | ||
178 | /* Let's position fi on the frame at which to start the | |
179 | display. Could be the innermost frame if the whole stack needs | |
180 | displaying, or if frame_low is 0. */ | |
181 | for (i = 0, fi = get_current_frame (); | |
182 | fi && i < frame_low; | |
183 | i++, fi = get_prev_frame (fi)); | |
184 | ||
185 | if (fi == NULL) | |
186 | error ("mi_cmd_stack_list_args: Not enough frames in stack."); | |
187 | ||
6ad4a2cf | 188 | cleanup_stack_args = make_cleanup_ui_out_list_begin_end (uiout, "stack-args"); |
fb40c209 AC |
189 | |
190 | /* Now let's print the frames up to frame_high, or until there are | |
191 | frames in the stack. */ | |
192 | for (; | |
193 | fi && (i <= frame_high || frame_high == -1); | |
194 | i++, fi = get_prev_frame (fi)) | |
195 | { | |
6ad4a2cf | 196 | struct cleanup *cleanup_frame; |
fb40c209 | 197 | QUIT; |
6ad4a2cf | 198 | cleanup_frame = make_cleanup_ui_out_tuple_begin_end (uiout, "frame"); |
fb40c209 AC |
199 | ui_out_field_int (uiout, "level", i); |
200 | list_args_or_locals (0, atoi (argv[0]), fi); | |
6ad4a2cf | 201 | do_cleanups (cleanup_frame); |
fb40c209 AC |
202 | } |
203 | ||
6ad4a2cf | 204 | do_cleanups (cleanup_stack_args); |
fb40c209 AC |
205 | if (i < frame_high) |
206 | error ("mi_cmd_stack_list_args: Not enough frames in stack."); | |
207 | ||
208 | return MI_CMD_DONE; | |
209 | } | |
210 | ||
211 | /* Print a list of the locals or the arguments for the currently | |
212 | selected frame. If the argument passed is 0, printonly the names | |
213 | of the variables, if an argument of 1 is passed, print the values | |
214 | as well. */ | |
215 | static void | |
216 | list_args_or_locals (int locals, int values, struct frame_info *fi) | |
217 | { | |
218 | struct block *block; | |
219 | struct symbol *sym; | |
220 | int i, nsyms; | |
6ad4a2cf | 221 | struct cleanup *cleanup_list; |
fb40c209 AC |
222 | static struct ui_stream *stb = NULL; |
223 | ||
224 | stb = ui_out_stream_new (uiout); | |
225 | ||
ae767bfb | 226 | block = get_frame_block (fi, 0); |
fb40c209 | 227 | |
6ad4a2cf | 228 | cleanup_list = make_cleanup_ui_out_list_begin_end (uiout, locals ? "locals" : "args"); |
fb40c209 AC |
229 | |
230 | while (block != 0) | |
231 | { | |
e88c90f2 | 232 | ALL_BLOCK_SYMBOLS (block, i, sym) |
fb40c209 | 233 | { |
39bf4652 JB |
234 | int print_me = 0; |
235 | ||
fb40c209 AC |
236 | switch (SYMBOL_CLASS (sym)) |
237 | { | |
238 | default: | |
239 | case LOC_UNDEF: /* catches errors */ | |
240 | case LOC_CONST: /* constant */ | |
241 | case LOC_TYPEDEF: /* local typedef */ | |
242 | case LOC_LABEL: /* local label */ | |
243 | case LOC_BLOCK: /* local function */ | |
244 | case LOC_CONST_BYTES: /* loc. byte seq. */ | |
245 | case LOC_UNRESOLVED: /* unresolved static */ | |
246 | case LOC_OPTIMIZED_OUT: /* optimized out */ | |
247 | print_me = 0; | |
248 | break; | |
249 | ||
250 | case LOC_ARG: /* argument */ | |
251 | case LOC_REF_ARG: /* reference arg */ | |
252 | case LOC_REGPARM: /* register arg */ | |
253 | case LOC_REGPARM_ADDR: /* indirect register arg */ | |
254 | case LOC_LOCAL_ARG: /* stack arg */ | |
255 | case LOC_BASEREG_ARG: /* basereg arg */ | |
4cf623b6 | 256 | case LOC_COMPUTED_ARG: /* arg with computed location */ |
fb40c209 AC |
257 | if (!locals) |
258 | print_me = 1; | |
259 | break; | |
260 | ||
261 | case LOC_LOCAL: /* stack local */ | |
262 | case LOC_BASEREG: /* basereg local */ | |
263 | case LOC_STATIC: /* static */ | |
264 | case LOC_REGISTER: /* register */ | |
4cf623b6 | 265 | case LOC_COMPUTED: /* computed location */ |
fb40c209 AC |
266 | if (locals) |
267 | print_me = 1; | |
268 | break; | |
269 | } | |
270 | if (print_me) | |
271 | { | |
6ad4a2cf | 272 | struct cleanup *cleanup_tuple = NULL; |
fb40c209 | 273 | if (values) |
6ad4a2cf JJ |
274 | cleanup_tuple = |
275 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
22abf04a | 276 | ui_out_field_string (uiout, "name", DEPRECATED_SYMBOL_NAME (sym)); |
fb40c209 AC |
277 | |
278 | if (values) | |
279 | { | |
280 | struct symbol *sym2; | |
281 | if (!locals) | |
22abf04a | 282 | sym2 = lookup_symbol (DEPRECATED_SYMBOL_NAME (sym), |
fb40c209 AC |
283 | block, VAR_NAMESPACE, |
284 | (int *) NULL, | |
285 | (struct symtab **) NULL); | |
286 | else | |
287 | sym2 = sym; | |
288 | print_variable_value (sym2, fi, stb->stream); | |
289 | ui_out_field_stream (uiout, "value", stb); | |
6ad4a2cf | 290 | do_cleanups (cleanup_tuple); |
fb40c209 AC |
291 | } |
292 | } | |
293 | } | |
294 | if (BLOCK_FUNCTION (block)) | |
295 | break; | |
296 | else | |
297 | block = BLOCK_SUPERBLOCK (block); | |
298 | } | |
6ad4a2cf | 299 | do_cleanups (cleanup_list); |
fb40c209 AC |
300 | ui_out_stream_delete (stb); |
301 | } | |
302 | ||
303 | enum mi_cmd_result | |
304 | mi_cmd_stack_select_frame (char *command, char **argv, int argc) | |
305 | { | |
fb40c209 AC |
306 | if (!target_has_stack) |
307 | error ("mi_cmd_stack_select_frame: No stack."); | |
308 | ||
309 | if (argc > 1) | |
310 | error ("mi_cmd_stack_select_frame: Usage: [FRAME_SPEC]"); | |
311 | ||
312 | /* with no args, don't change frame */ | |
313 | if (argc == 0) | |
314 | select_frame_command_wrapper (0, 1 /* not used */ ); | |
315 | else | |
316 | select_frame_command_wrapper (argv[0], 1 /* not used */ ); | |
fb40c209 AC |
317 | return MI_CMD_DONE; |
318 | } |