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fb40c209 AC |
1 | /* MI Command Set - stack commands. |
2 | Copyright (C) 2000, 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" | |
28 | ||
29 | #ifdef UI_OUT | |
30 | /* FIXME: these should go in some .h file but stack.c doesn't have a | |
31 | corresponding .h file. These wrappers will be obsolete anyway, once | |
32 | we pull the plug on the sanitization. */ | |
33 | extern void select_frame_command_wrapper (char *, int); | |
34 | #endif | |
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; | |
49 | struct frame_info *fi; | |
50 | ||
51 | if (!target_has_stack) | |
52 | error ("mi_cmd_stack_list_frames: No stack."); | |
53 | ||
54 | if (argc > 2 || argc == 1) | |
55 | error ("mi_cmd_stack_list_frames: Usage: [FRAME_LOW FRAME_HIGH]"); | |
56 | ||
57 | if (argc == 2) | |
58 | { | |
59 | frame_low = atoi (argv[0]); | |
60 | frame_high = atoi (argv[1]); | |
61 | } | |
62 | else | |
63 | { | |
64 | /* Called with no arguments, it means we want the whole | |
65 | backtrace. */ | |
66 | frame_low = -1; | |
67 | frame_high = -1; | |
68 | } | |
69 | ||
70 | /* Let's position fi on the frame at which to start the | |
71 | display. Could be the innermost frame if the whole stack needs | |
72 | displaying, or if frame_low is 0. */ | |
73 | for (i = 0, fi = get_current_frame (); | |
74 | fi && i < frame_low; | |
75 | i++, fi = get_prev_frame (fi)); | |
76 | ||
77 | if (fi == NULL) | |
78 | error ("mi_cmd_stack_list_frames: Not enough frames in stack."); | |
79 | ||
80 | ui_out_list_begin (uiout, "stack"); | |
81 | ||
82 | /* Now let;s print the frames up to frame_high, or until there are | |
83 | frames in the stack. */ | |
84 | for (; | |
85 | fi && (i <= frame_high || frame_high == -1); | |
86 | i++, fi = get_prev_frame (fi)) | |
87 | { | |
88 | QUIT; | |
89 | /* level == i: always print the level 'i' | |
90 | source == LOC_AND_ADDRESS: print the location and the address | |
91 | always, even for level 0. | |
92 | args == 0: don't print the arguments. */ | |
93 | print_frame_info (fi /* frame info */ , | |
94 | i /* level */ , | |
95 | LOC_AND_ADDRESS /* source */ , | |
96 | 0 /* args */ ); | |
97 | } | |
98 | ||
99 | ui_out_list_end (uiout); | |
100 | if (i < frame_high) | |
101 | error ("mi_cmd_stack_list_frames: Not enough frames in stack."); | |
102 | ||
103 | return MI_CMD_DONE; | |
104 | } | |
105 | ||
106 | enum mi_cmd_result | |
107 | mi_cmd_stack_info_depth (char *command, char **argv, int argc) | |
108 | { | |
109 | int frame_high; | |
110 | int i; | |
111 | struct frame_info *fi; | |
112 | ||
113 | if (!target_has_stack) | |
114 | error ("mi_cmd_stack_info_depth: No stack."); | |
115 | ||
116 | if (argc > 1) | |
117 | error ("mi_cmd_stack_info_depth: Usage: [MAX_DEPTH]"); | |
118 | ||
119 | if (argc == 1) | |
120 | frame_high = atoi (argv[0]); | |
121 | else | |
122 | /* Called with no arguments, it means we want the real depth of | |
123 | the stack. */ | |
124 | frame_high = -1; | |
125 | ||
126 | for (i = 0, fi = get_current_frame (); | |
127 | fi && (i < frame_high || frame_high == -1); | |
128 | i++, fi = get_prev_frame (fi)) | |
129 | QUIT; | |
130 | ||
131 | ui_out_field_int (uiout, "depth", i); | |
132 | ||
133 | return MI_CMD_DONE; | |
134 | } | |
135 | ||
136 | /* Print a list of the locals for the current frame. With argument of | |
137 | 0, print only the names, with argument of 1 print also the | |
138 | values. */ | |
139 | enum mi_cmd_result | |
140 | mi_cmd_stack_list_locals (char *command, char **argv, int argc) | |
141 | { | |
142 | if (argc != 1) | |
143 | error ("mi_cmd_stack_list_locals: Usage: PRINT_VALUES"); | |
144 | ||
145 | list_args_or_locals (1, atoi (argv[0]), selected_frame); | |
146 | return MI_CMD_DONE; | |
147 | } | |
148 | ||
149 | /* Print a list of the arguments for the current frame. With argument | |
150 | of 0, print only the names, with argument of 1 print also the | |
151 | values. */ | |
152 | enum mi_cmd_result | |
153 | mi_cmd_stack_list_args (char *command, char **argv, int argc) | |
154 | { | |
155 | int frame_low; | |
156 | int frame_high; | |
157 | int i; | |
158 | struct frame_info *fi; | |
159 | ||
160 | if (argc < 1 || argc > 3 || argc == 2) | |
161 | error ("mi_cmd_stack_list_args: Usage: PRINT_VALUES [FRAME_LOW FRAME_HIGH]"); | |
162 | ||
163 | if (argc == 3) | |
164 | { | |
165 | frame_low = atoi (argv[1]); | |
166 | frame_high = atoi (argv[2]); | |
167 | } | |
168 | else | |
169 | { | |
170 | /* Called with no arguments, it means we want args for the whole | |
171 | backtrace. */ | |
172 | frame_low = -1; | |
173 | frame_high = -1; | |
174 | } | |
175 | ||
176 | /* Let's position fi on the frame at which to start the | |
177 | display. Could be the innermost frame if the whole stack needs | |
178 | displaying, or if frame_low is 0. */ | |
179 | for (i = 0, fi = get_current_frame (); | |
180 | fi && i < frame_low; | |
181 | i++, fi = get_prev_frame (fi)); | |
182 | ||
183 | if (fi == NULL) | |
184 | error ("mi_cmd_stack_list_args: Not enough frames in stack."); | |
185 | ||
186 | ui_out_list_begin (uiout, "stack-args"); | |
187 | ||
188 | /* Now let's print the frames up to frame_high, or until there are | |
189 | frames in the stack. */ | |
190 | for (; | |
191 | fi && (i <= frame_high || frame_high == -1); | |
192 | i++, fi = get_prev_frame (fi)) | |
193 | { | |
194 | QUIT; | |
195 | ui_out_list_begin (uiout, "frame"); | |
196 | ui_out_field_int (uiout, "level", i); | |
197 | list_args_or_locals (0, atoi (argv[0]), fi); | |
198 | ui_out_list_end (uiout); | |
199 | } | |
200 | ||
201 | ui_out_list_end (uiout); | |
202 | if (i < frame_high) | |
203 | error ("mi_cmd_stack_list_args: Not enough frames in stack."); | |
204 | ||
205 | return MI_CMD_DONE; | |
206 | } | |
207 | ||
208 | /* Print a list of the locals or the arguments for the currently | |
209 | selected frame. If the argument passed is 0, printonly the names | |
210 | of the variables, if an argument of 1 is passed, print the values | |
211 | as well. */ | |
212 | static void | |
213 | list_args_or_locals (int locals, int values, struct frame_info *fi) | |
214 | { | |
215 | struct block *block; | |
216 | struct symbol *sym; | |
217 | int i, nsyms; | |
218 | int print_me = 0; | |
219 | static struct ui_stream *stb = NULL; | |
220 | ||
221 | stb = ui_out_stream_new (uiout); | |
222 | ||
223 | block = get_frame_block (fi); | |
224 | ||
225 | ui_out_list_begin (uiout, locals ? "locals" : "args"); | |
226 | ||
227 | while (block != 0) | |
228 | { | |
229 | nsyms = BLOCK_NSYMS (block); | |
230 | for (i = 0; i < nsyms; i++) | |
231 | { | |
232 | sym = BLOCK_SYM (block, i); | |
233 | switch (SYMBOL_CLASS (sym)) | |
234 | { | |
235 | default: | |
236 | case LOC_UNDEF: /* catches errors */ | |
237 | case LOC_CONST: /* constant */ | |
238 | case LOC_TYPEDEF: /* local typedef */ | |
239 | case LOC_LABEL: /* local label */ | |
240 | case LOC_BLOCK: /* local function */ | |
241 | case LOC_CONST_BYTES: /* loc. byte seq. */ | |
242 | case LOC_UNRESOLVED: /* unresolved static */ | |
243 | case LOC_OPTIMIZED_OUT: /* optimized out */ | |
244 | print_me = 0; | |
245 | break; | |
246 | ||
247 | case LOC_ARG: /* argument */ | |
248 | case LOC_REF_ARG: /* reference arg */ | |
249 | case LOC_REGPARM: /* register arg */ | |
250 | case LOC_REGPARM_ADDR: /* indirect register arg */ | |
251 | case LOC_LOCAL_ARG: /* stack arg */ | |
252 | case LOC_BASEREG_ARG: /* basereg arg */ | |
253 | if (!locals) | |
254 | print_me = 1; | |
255 | break; | |
256 | ||
257 | case LOC_LOCAL: /* stack local */ | |
258 | case LOC_BASEREG: /* basereg local */ | |
259 | case LOC_STATIC: /* static */ | |
260 | case LOC_REGISTER: /* register */ | |
261 | if (locals) | |
262 | print_me = 1; | |
263 | break; | |
264 | } | |
265 | if (print_me) | |
266 | { | |
267 | if (values) | |
268 | ui_out_list_begin (uiout, NULL); | |
269 | ui_out_field_string (uiout, "name", SYMBOL_NAME (sym)); | |
270 | ||
271 | if (values) | |
272 | { | |
273 | struct symbol *sym2; | |
274 | if (!locals) | |
275 | sym2 = lookup_symbol (SYMBOL_NAME (sym), | |
276 | block, VAR_NAMESPACE, | |
277 | (int *) NULL, | |
278 | (struct symtab **) NULL); | |
279 | else | |
280 | sym2 = sym; | |
281 | print_variable_value (sym2, fi, stb->stream); | |
282 | ui_out_field_stream (uiout, "value", stb); | |
283 | ui_out_list_end (uiout); | |
284 | } | |
285 | } | |
286 | } | |
287 | if (BLOCK_FUNCTION (block)) | |
288 | break; | |
289 | else | |
290 | block = BLOCK_SUPERBLOCK (block); | |
291 | } | |
292 | ui_out_list_end (uiout); | |
293 | ui_out_stream_delete (stb); | |
294 | } | |
295 | ||
296 | enum mi_cmd_result | |
297 | mi_cmd_stack_select_frame (char *command, char **argv, int argc) | |
298 | { | |
299 | #ifdef UI_OUT | |
300 | if (!target_has_stack) | |
301 | error ("mi_cmd_stack_select_frame: No stack."); | |
302 | ||
303 | if (argc > 1) | |
304 | error ("mi_cmd_stack_select_frame: Usage: [FRAME_SPEC]"); | |
305 | ||
306 | /* with no args, don't change frame */ | |
307 | if (argc == 0) | |
308 | select_frame_command_wrapper (0, 1 /* not used */ ); | |
309 | else | |
310 | select_frame_command_wrapper (argv[0], 1 /* not used */ ); | |
311 | #endif | |
312 | return MI_CMD_DONE; | |
313 | } |