Commit | Line | Data |
---|---|---|
4907ff5a | 1 | /* GDB interface for Guile |
c7fabadf | 2 | * Copyright (C) 1996,1997,1999,2000,2001, 2002 Free Software Foundation, Inc. |
4907ff5a | 3 | * |
73be1d9e MV |
4 | * This library is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; either | |
7 | * version 2.1 of the License, or (at your option) any later version. | |
4907ff5a | 8 | * |
73be1d9e | 9 | * This library is distributed in the hope that it will be useful, |
4907ff5a | 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
4907ff5a | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | */ | |
4907ff5a | 18 | |
5ebbe4ef RB |
19 | #if HAVE_CONFIG_H |
20 | # include <config.h> | |
21 | #endif | |
1bbd0b84 | 22 | |
a0599745 | 23 | #include "libguile/_scm.h" |
681b9005 MD |
24 | |
25 | #include <stdio.h> | |
783e7774 | 26 | #include <string.h> |
681b9005 MD |
27 | #ifdef HAVE_UNISTD_H |
28 | #include <unistd.h> | |
29 | #endif | |
30 | ||
a0599745 MD |
31 | #include "libguile/strports.h" |
32 | #include "libguile/read.h" | |
33 | #include "libguile/eval.h" | |
34 | #include "libguile/chars.h" | |
35 | #include "libguile/modules.h" | |
36 | #include "libguile/ports.h" | |
7e73eaee | 37 | #include "libguile/fluids.h" |
a0599745 | 38 | #include "libguile/strings.h" |
9293b3c6 | 39 | #include "libguile/init.h" |
4907ff5a | 40 | |
a0599745 | 41 | #include "libguile/gdbint.h" |
4907ff5a MD |
42 | \f |
43 | /* {Support for debugging with gdb} | |
44 | * | |
45 | * TODO: | |
46 | * | |
47 | * 1. Redirect outputs | |
48 | * 2. Catch errors | |
49 | * 3. Prevent print from causing segmentation fault when given broken pairs | |
50 | */ | |
51 | ||
4907ff5a MD |
52 | #define GDB_TYPE SCM |
53 | ||
a0599745 | 54 | #include "libguile/gdb_interface.h" |
4907ff5a MD |
55 | |
56 | \f | |
57 | ||
58 | /* Be carefull when this macro is true. | |
406c7d90 | 59 | scm_gc_running_p is set during gc. |
4907ff5a | 60 | */ |
406c7d90 | 61 | #define SCM_GC_P (scm_gc_running_p) |
4907ff5a MD |
62 | |
63 | /* Macros that encapsulate blocks of code which can be called by the | |
64 | * debugger. | |
65 | */ | |
66 | #define SCM_BEGIN_FOREIGN_BLOCK \ | |
d3a6bc94 | 67 | do { \ |
4907ff5a MD |
68 | old_gc = scm_block_gc; scm_block_gc = 1; \ |
69 | scm_print_carefully_p = 1; \ | |
d3a6bc94 | 70 | } while (0) |
4907ff5a MD |
71 | |
72 | ||
73 | #define SCM_END_FOREIGN_BLOCK \ | |
d3a6bc94 | 74 | do { \ |
4907ff5a MD |
75 | scm_print_carefully_p = 0; \ |
76 | scm_block_gc = old_gc; \ | |
d3a6bc94 | 77 | } while (0) |
4907ff5a MD |
78 | |
79 | ||
80 | #define RESET_STRING { gdb_output_length = 0; } | |
81 | ||
82 | #define SEND_STRING(str) \ | |
d3a6bc94 | 83 | do { \ |
a57c1cc7 MD |
84 | gdb_output = (char *) (str); \ |
85 | gdb_output_length = strlen ((const char *) (str)); \ | |
d3a6bc94 | 86 | } while (0) |
380b6b4c | 87 | |
4907ff5a MD |
88 | |
89 | /* {Gdb interface} | |
90 | */ | |
91 | ||
92 | unsigned short gdb_options = GDB_HAVE_BINDINGS; | |
93 | ||
94 | char *gdb_language = "lisp/c"; | |
95 | ||
96 | SCM gdb_result; | |
97 | ||
98 | char *gdb_output; | |
99 | ||
100 | int gdb_output_length; | |
101 | ||
102 | int scm_print_carefully_p; | |
103 | ||
104 | static SCM gdb_input_port; | |
380b6b4c MD |
105 | static int port_mark_p, stream_mark_p, string_mark_p; |
106 | ||
107 | static SCM tok_buf; | |
108 | static int tok_buf_mark_p; | |
109 | ||
4907ff5a | 110 | static SCM gdb_output_port; |
c7fabadf | 111 | static int old_gc; |
4907ff5a | 112 | |
1cc91f1b | 113 | |
380b6b4c | 114 | static void |
1bbd0b84 | 115 | unmark_port (SCM port) |
380b6b4c MD |
116 | { |
117 | SCM stream, string; | |
c8a1bdc4 HWN |
118 | port_mark_p = SCM_GC_MARK_P (port); |
119 | SCM_CLEAR_GC_MARK (port); | |
74a16888 | 120 | stream = SCM_PACK (SCM_STREAM (port)); |
c8a1bdc4 HWN |
121 | stream_mark_p = SCM_GC_MARK_P (stream); |
122 | SCM_CLEAR_GC_MARK (stream); | |
380b6b4c | 123 | string = SCM_CDR (stream); |
c8a1bdc4 HWN |
124 | string_mark_p = SCM_GC_MARK_P (string); |
125 | SCM_CLEAR_GC_MARK (string); | |
380b6b4c MD |
126 | } |
127 | ||
1cc91f1b | 128 | |
380b6b4c | 129 | static void |
1bbd0b84 | 130 | remark_port (SCM port) |
380b6b4c | 131 | { |
74a16888 | 132 | SCM stream = SCM_PACK (SCM_STREAM (port)); |
380b6b4c | 133 | SCM string = SCM_CDR (stream); |
c8a1bdc4 HWN |
134 | if (string_mark_p) |
135 | SCM_SET_GC_MARK (string); | |
136 | if (stream_mark_p) | |
137 | SCM_SET_GC_MARK (stream); | |
138 | if (port_mark_p) | |
139 | SCM_SET_GC_MARK (port); | |
380b6b4c MD |
140 | } |
141 | ||
1cc91f1b | 142 | |
4907ff5a | 143 | int |
6e8d25a6 | 144 | gdb_maybe_valid_type_p (SCM value) |
4907ff5a | 145 | { |
c8a1bdc4 | 146 | return SCM_IMP (value) || scm_in_heap_p (value); |
4907ff5a MD |
147 | } |
148 | ||
1cc91f1b | 149 | |
4907ff5a | 150 | int |
6e8d25a6 | 151 | gdb_read (char *str) |
4907ff5a MD |
152 | { |
153 | SCM ans; | |
154 | int status = 0; | |
155 | RESET_STRING; | |
156 | /* Need to be restrictive about what to read? */ | |
157 | if (SCM_GC_P) | |
158 | { | |
159 | char *p; | |
160 | for (p = str; *p != '\0'; ++p) | |
161 | switch (*p) | |
162 | { | |
163 | case '(': | |
164 | case '\'': | |
165 | case '"': | |
166 | SEND_STRING ("Can't read this kind of expressions during gc"); | |
167 | return -1; | |
168 | case '#': | |
169 | if (*++p == '\0') | |
170 | goto premature; | |
171 | if (*p == '\\') | |
172 | { | |
173 | if (*++p != '\0') | |
174 | continue; | |
175 | premature: | |
176 | SEND_STRING ("Premature end of lisp expression"); | |
177 | return -1; | |
178 | } | |
179 | default: | |
180 | continue; | |
181 | } | |
182 | } | |
183 | SCM_BEGIN_FOREIGN_BLOCK; | |
380b6b4c | 184 | unmark_port (gdb_input_port); |
c94577b4 | 185 | scm_seek (gdb_input_port, SCM_INUM0, SCM_MAKINUM (SEEK_SET)); |
840ae05d | 186 | scm_puts (str, gdb_input_port); |
69bc9ff3 | 187 | scm_truncate_file (gdb_input_port, SCM_UNDEFINED); |
c94577b4 | 188 | scm_seek (gdb_input_port, SCM_INUM0, SCM_MAKINUM (SEEK_SET)); |
4907ff5a | 189 | /* Read one object */ |
c8a1bdc4 HWN |
190 | tok_buf_mark_p = SCM_GC_MARK_P (tok_buf); |
191 | SCM_CLEAR_GC_MARK (tok_buf); | |
deca31e1 | 192 | ans = scm_lreadr (&tok_buf, gdb_input_port, &ans); |
4907ff5a MD |
193 | if (SCM_GC_P) |
194 | { | |
380b6b4c | 195 | if (SCM_NIMP (ans)) |
4907ff5a MD |
196 | { |
197 | SEND_STRING ("Non-immediate created during gc. Memory may be trashed."); | |
198 | status = -1; | |
199 | goto exit; | |
200 | } | |
201 | } | |
380b6b4c | 202 | gdb_result = ans; |
4907ff5a | 203 | /* Protect answer from future GC */ |
380b6b4c MD |
204 | if (SCM_NIMP (ans)) |
205 | scm_permanent_object (ans); | |
4907ff5a | 206 | exit: |
380b6b4c | 207 | if (tok_buf_mark_p) |
c8a1bdc4 | 208 | SCM_SET_GC_MARK (tok_buf); |
380b6b4c | 209 | remark_port (gdb_input_port); |
4907ff5a MD |
210 | SCM_END_FOREIGN_BLOCK; |
211 | return status; | |
212 | } | |
213 | ||
1cc91f1b | 214 | |
4907ff5a | 215 | int |
6e8d25a6 | 216 | gdb_eval (SCM exp) |
4907ff5a MD |
217 | { |
218 | RESET_STRING; | |
219 | if (SCM_IMP (exp)) | |
220 | { | |
221 | gdb_result = exp; | |
222 | return 0; | |
223 | } | |
224 | if (SCM_GC_P) | |
225 | { | |
226 | SEND_STRING ("Can't evaluate lisp expressions during gc"); | |
227 | return -1; | |
228 | } | |
229 | SCM_BEGIN_FOREIGN_BLOCK; | |
230 | { | |
7e73eaee | 231 | SCM env = scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE); |
4907ff5a MD |
232 | gdb_result = scm_permanent_object (scm_ceval (exp, env)); |
233 | } | |
234 | SCM_END_FOREIGN_BLOCK; | |
235 | return 0; | |
236 | } | |
237 | ||
1cc91f1b | 238 | |
4907ff5a | 239 | int |
6e8d25a6 | 240 | gdb_print (SCM obj) |
4907ff5a | 241 | { |
9293b3c6 MD |
242 | if (!scm_initialized_p) |
243 | SEND_STRING ("*** Guile not initialized ***"); | |
244 | else | |
245 | { | |
246 | RESET_STRING; | |
247 | SCM_BEGIN_FOREIGN_BLOCK; | |
248 | /* Reset stream */ | |
249 | scm_seek (gdb_output_port, SCM_INUM0, SCM_MAKINUM (SEEK_SET)); | |
250 | scm_write (obj, gdb_output_port); | |
251 | scm_truncate_file (gdb_output_port, SCM_UNDEFINED); | |
252 | { | |
92c2555f | 253 | scm_t_port *pt = SCM_PTAB_ENTRY (gdb_output_port); |
9293b3c6 MD |
254 | |
255 | scm_flush (gdb_output_port); | |
256 | *(pt->write_buf + pt->read_buf_size) = 0; | |
257 | SEND_STRING (pt->read_buf); | |
258 | } | |
259 | SCM_END_FOREIGN_BLOCK; | |
260 | } | |
4907ff5a MD |
261 | return 0; |
262 | } | |
263 | ||
1cc91f1b | 264 | |
4907ff5a | 265 | int |
6e8d25a6 | 266 | gdb_binding (SCM name, SCM value) |
4907ff5a MD |
267 | { |
268 | RESET_STRING; | |
269 | if (SCM_GC_P) | |
270 | { | |
271 | SEND_STRING ("Can't create new bindings during gc"); | |
272 | return -1; | |
273 | } | |
274 | SCM_BEGIN_FOREIGN_BLOCK; | |
275 | { | |
86d31dfe MV |
276 | SCM var = scm_sym2var (name, SCM_TOP_LEVEL_LOOKUP_CLOSURE, SCM_BOOL_T); |
277 | SCM_VARIABLE_SET (var, value); | |
4907ff5a MD |
278 | } |
279 | SCM_END_FOREIGN_BLOCK; | |
280 | return 0; | |
281 | } | |
282 | ||
283 | void | |
284 | scm_init_gdbint () | |
285 | { | |
286 | static char *s = "scm_init_gdb_interface"; | |
287 | SCM port; | |
288 | ||
289 | scm_print_carefully_p = 0; | |
290 | ||
291 | port = scm_mkstrport (SCM_INUM0, | |
840ae05d | 292 | scm_make_string (SCM_MAKINUM (0), SCM_UNDEFINED), |
4907ff5a MD |
293 | SCM_OPN | SCM_WRTNG, |
294 | s); | |
295 | gdb_output_port = scm_permanent_object (port); | |
296 | ||
297 | port = scm_mkstrport (SCM_INUM0, | |
298 | scm_make_string (SCM_MAKINUM (0), SCM_UNDEFINED), | |
840ae05d | 299 | SCM_OPN | SCM_RDNG | SCM_WRTNG, |
4907ff5a MD |
300 | s); |
301 | gdb_input_port = scm_permanent_object (port); | |
380b6b4c | 302 | |
be54b15d | 303 | tok_buf = scm_permanent_object (scm_allocate_string (30)); |
4907ff5a | 304 | } |
89e00824 ML |
305 | |
306 | /* | |
307 | Local Variables: | |
308 | c-file-style: "gnu" | |
309 | End: | |
310 | */ |