Commit | Line | Data |
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4907ff5a | 1 | /* GDB interface for Guile |
434f2f7a DH |
2 | * Copyright (C) 1996,1997,1999,2000,2001,2002,2004 |
3 | * Free Software Foundation, Inc. | |
4907ff5a | 4 | * |
73be1d9e MV |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Lesser General Public | |
7 | * License as published by the Free Software Foundation; either | |
8 | * version 2.1 of the License, or (at your option) any later version. | |
4907ff5a | 9 | * |
73be1d9e | 10 | * This library is distributed in the hope that it will be useful, |
4907ff5a | 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
73be1d9e MV |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. | |
4907ff5a | 14 | * |
73be1d9e MV |
15 | * You should have received a copy of the GNU Lesser General Public |
16 | * License along with this library; if not, write to the Free Software | |
92205699 | 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
73be1d9e | 18 | */ |
4907ff5a | 19 | |
dbb605f5 | 20 | #ifdef HAVE_CONFIG_H |
5ebbe4ef RB |
21 | # include <config.h> |
22 | #endif | |
1bbd0b84 | 23 | |
a0599745 | 24 | #include "libguile/_scm.h" |
681b9005 MD |
25 | |
26 | #include <stdio.h> | |
783e7774 | 27 | #include <string.h> |
681b9005 MD |
28 | #ifdef HAVE_UNISTD_H |
29 | #include <unistd.h> | |
30 | #endif | |
31 | ||
a0599745 MD |
32 | #include "libguile/strports.h" |
33 | #include "libguile/read.h" | |
34 | #include "libguile/eval.h" | |
35 | #include "libguile/chars.h" | |
36 | #include "libguile/modules.h" | |
37 | #include "libguile/ports.h" | |
7e73eaee | 38 | #include "libguile/fluids.h" |
a0599745 | 39 | #include "libguile/strings.h" |
9293b3c6 | 40 | #include "libguile/init.h" |
4907ff5a | 41 | |
a0599745 | 42 | #include "libguile/gdbint.h" |
4907ff5a MD |
43 | \f |
44 | /* {Support for debugging with gdb} | |
45 | * | |
46 | * TODO: | |
47 | * | |
48 | * 1. Redirect outputs | |
49 | * 2. Catch errors | |
50 | * 3. Prevent print from causing segmentation fault when given broken pairs | |
51 | */ | |
52 | ||
4907ff5a MD |
53 | #define GDB_TYPE SCM |
54 | ||
a0599745 | 55 | #include "libguile/gdb_interface.h" |
4907ff5a MD |
56 | |
57 | \f | |
58 | ||
59 | /* Be carefull when this macro is true. | |
406c7d90 | 60 | scm_gc_running_p is set during gc. |
4907ff5a | 61 | */ |
406c7d90 | 62 | #define SCM_GC_P (scm_gc_running_p) |
4907ff5a MD |
63 | |
64 | /* Macros that encapsulate blocks of code which can be called by the | |
65 | * debugger. | |
66 | */ | |
67 | #define SCM_BEGIN_FOREIGN_BLOCK \ | |
d3a6bc94 | 68 | do { \ |
4907ff5a | 69 | scm_print_carefully_p = 1; \ |
d3a6bc94 | 70 | } while (0) |
4907ff5a MD |
71 | |
72 | ||
73 | #define SCM_END_FOREIGN_BLOCK \ | |
d3a6bc94 | 74 | do { \ |
4907ff5a | 75 | scm_print_carefully_p = 0; \ |
d3a6bc94 | 76 | } while (0) |
4907ff5a MD |
77 | |
78 | ||
79 | #define RESET_STRING { gdb_output_length = 0; } | |
80 | ||
81 | #define SEND_STRING(str) \ | |
d3a6bc94 | 82 | do { \ |
a57c1cc7 MD |
83 | gdb_output = (char *) (str); \ |
84 | gdb_output_length = strlen ((const char *) (str)); \ | |
d3a6bc94 | 85 | } while (0) |
380b6b4c | 86 | |
4907ff5a MD |
87 | |
88 | /* {Gdb interface} | |
89 | */ | |
90 | ||
91 | unsigned short gdb_options = GDB_HAVE_BINDINGS; | |
92 | ||
93 | char *gdb_language = "lisp/c"; | |
94 | ||
95 | SCM gdb_result; | |
96 | ||
97 | char *gdb_output; | |
98 | ||
99 | int gdb_output_length; | |
100 | ||
101 | int scm_print_carefully_p; | |
102 | ||
103 | static SCM gdb_input_port; | |
104 | static SCM gdb_output_port; | |
4907ff5a | 105 | |
1cc91f1b | 106 | |
4907ff5a | 107 | int |
6e8d25a6 | 108 | gdb_maybe_valid_type_p (SCM value) |
4907ff5a | 109 | { |
26224b3f LC |
110 | return SCM_IMP (value); /* || scm_in_heap_p (value); */ /* FIXME: What to |
111 | do? */ | |
4907ff5a MD |
112 | } |
113 | ||
1cc91f1b | 114 | |
4907ff5a | 115 | int |
6e8d25a6 | 116 | gdb_read (char *str) |
4907ff5a | 117 | { |
26224b3f | 118 | #if 0 |
4907ff5a MD |
119 | SCM ans; |
120 | int status = 0; | |
121 | RESET_STRING; | |
122 | /* Need to be restrictive about what to read? */ | |
26224b3f | 123 | if (1) /* (SCM_GC_P) */ /* FIXME */ |
4907ff5a MD |
124 | { |
125 | char *p; | |
126 | for (p = str; *p != '\0'; ++p) | |
127 | switch (*p) | |
128 | { | |
129 | case '(': | |
130 | case '\'': | |
131 | case '"': | |
132 | SEND_STRING ("Can't read this kind of expressions during gc"); | |
133 | return -1; | |
134 | case '#': | |
135 | if (*++p == '\0') | |
136 | goto premature; | |
137 | if (*p == '\\') | |
138 | { | |
139 | if (*++p != '\0') | |
140 | continue; | |
141 | premature: | |
142 | SEND_STRING ("Premature end of lisp expression"); | |
143 | return -1; | |
144 | } | |
145 | default: | |
146 | continue; | |
147 | } | |
148 | } | |
149 | SCM_BEGIN_FOREIGN_BLOCK; | |
380b6b4c | 150 | unmark_port (gdb_input_port); |
e11e83f3 | 151 | scm_seek (gdb_input_port, SCM_INUM0, scm_from_int (SEEK_SET)); |
840ae05d | 152 | scm_puts (str, gdb_input_port); |
69bc9ff3 | 153 | scm_truncate_file (gdb_input_port, SCM_UNDEFINED); |
e11e83f3 | 154 | scm_seek (gdb_input_port, SCM_INUM0, scm_from_int (SEEK_SET)); |
7337d56d | 155 | |
4907ff5a | 156 | /* Read one object */ |
7337d56d | 157 | ans = scm_read (gdb_input_port); |
4907ff5a MD |
158 | if (SCM_GC_P) |
159 | { | |
380b6b4c | 160 | if (SCM_NIMP (ans)) |
4907ff5a MD |
161 | { |
162 | SEND_STRING ("Non-immediate created during gc. Memory may be trashed."); | |
163 | status = -1; | |
164 | goto exit; | |
165 | } | |
166 | } | |
380b6b4c | 167 | gdb_result = ans; |
4907ff5a | 168 | /* Protect answer from future GC */ |
380b6b4c MD |
169 | if (SCM_NIMP (ans)) |
170 | scm_permanent_object (ans); | |
4907ff5a | 171 | exit: |
380b6b4c | 172 | remark_port (gdb_input_port); |
4907ff5a MD |
173 | SCM_END_FOREIGN_BLOCK; |
174 | return status; | |
26224b3f LC |
175 | #else |
176 | abort (); | |
177 | #endif | |
4907ff5a MD |
178 | } |
179 | ||
1cc91f1b | 180 | |
4907ff5a | 181 | int |
6e8d25a6 | 182 | gdb_eval (SCM exp) |
4907ff5a MD |
183 | { |
184 | RESET_STRING; | |
4907ff5a MD |
185 | if (SCM_GC_P) |
186 | { | |
187 | SEND_STRING ("Can't evaluate lisp expressions during gc"); | |
188 | return -1; | |
189 | } | |
190 | SCM_BEGIN_FOREIGN_BLOCK; | |
191 | { | |
7e73eaee | 192 | SCM env = scm_top_level_env (SCM_TOP_LEVEL_LOOKUP_CLOSURE); |
434f2f7a | 193 | gdb_result = scm_permanent_object (scm_i_eval_x (exp, env)); |
4907ff5a MD |
194 | } |
195 | SCM_END_FOREIGN_BLOCK; | |
196 | return 0; | |
197 | } | |
198 | ||
1cc91f1b | 199 | |
4907ff5a | 200 | int |
6e8d25a6 | 201 | gdb_print (SCM obj) |
4907ff5a | 202 | { |
9293b3c6 MD |
203 | if (!scm_initialized_p) |
204 | SEND_STRING ("*** Guile not initialized ***"); | |
205 | else | |
206 | { | |
207 | RESET_STRING; | |
208 | SCM_BEGIN_FOREIGN_BLOCK; | |
209 | /* Reset stream */ | |
e11e83f3 | 210 | scm_seek (gdb_output_port, SCM_INUM0, scm_from_int (SEEK_SET)); |
9293b3c6 MD |
211 | scm_write (obj, gdb_output_port); |
212 | scm_truncate_file (gdb_output_port, SCM_UNDEFINED); | |
213 | { | |
92c2555f | 214 | scm_t_port *pt = SCM_PTAB_ENTRY (gdb_output_port); |
9293b3c6 MD |
215 | |
216 | scm_flush (gdb_output_port); | |
217 | *(pt->write_buf + pt->read_buf_size) = 0; | |
218 | SEND_STRING (pt->read_buf); | |
219 | } | |
220 | SCM_END_FOREIGN_BLOCK; | |
221 | } | |
4907ff5a MD |
222 | return 0; |
223 | } | |
224 | ||
1cc91f1b | 225 | |
4907ff5a | 226 | int |
6e8d25a6 | 227 | gdb_binding (SCM name, SCM value) |
4907ff5a MD |
228 | { |
229 | RESET_STRING; | |
230 | if (SCM_GC_P) | |
231 | { | |
232 | SEND_STRING ("Can't create new bindings during gc"); | |
233 | return -1; | |
234 | } | |
235 | SCM_BEGIN_FOREIGN_BLOCK; | |
236 | { | |
86d31dfe MV |
237 | SCM var = scm_sym2var (name, SCM_TOP_LEVEL_LOOKUP_CLOSURE, SCM_BOOL_T); |
238 | SCM_VARIABLE_SET (var, value); | |
4907ff5a MD |
239 | } |
240 | SCM_END_FOREIGN_BLOCK; | |
241 | return 0; | |
242 | } | |
243 | ||
244 | void | |
245 | scm_init_gdbint () | |
246 | { | |
247 | static char *s = "scm_init_gdb_interface"; | |
248 | SCM port; | |
249 | ||
250 | scm_print_carefully_p = 0; | |
251 | ||
252 | port = scm_mkstrport (SCM_INUM0, | |
cc95e00a | 253 | scm_c_make_string (0, SCM_UNDEFINED), |
4907ff5a MD |
254 | SCM_OPN | SCM_WRTNG, |
255 | s); | |
256 | gdb_output_port = scm_permanent_object (port); | |
257 | ||
258 | port = scm_mkstrport (SCM_INUM0, | |
cc95e00a | 259 | scm_c_make_string (0, SCM_UNDEFINED), |
840ae05d | 260 | SCM_OPN | SCM_RDNG | SCM_WRTNG, |
4907ff5a MD |
261 | s); |
262 | gdb_input_port = scm_permanent_object (port); | |
263 | } | |
89e00824 ML |
264 | |
265 | /* | |
266 | Local Variables: | |
267 | c-file-style: "gnu" | |
268 | End: | |
269 | */ |