Commit | Line | Data |
---|---|---|
4907ff5a | 1 | /* GDB interface for Guile |
62e15979 | 2 | * Copyright (C) 1996,1997,1999,2000,2001,2002,2004,2009,2011,2012 |
434f2f7a | 3 | * Free Software Foundation, Inc. |
4907ff5a | 4 | * |
73be1d9e | 5 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
6 | * modify it under the terms of the GNU Lesser General Public License |
7 | * as published by the Free Software Foundation; either version 3 of | |
8 | * the License, or (at your option) any later version. | |
4907ff5a | 9 | * |
53befeb7 NJ |
10 | * This library is distributed in the hope that it will be useful, but |
11 | * 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 | |
53befeb7 NJ |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
18 | * 02110-1301 USA | |
73be1d9e | 19 | */ |
4907ff5a | 20 | |
dbb605f5 | 21 | #ifdef HAVE_CONFIG_H |
5ebbe4ef RB |
22 | # include <config.h> |
23 | #endif | |
1bbd0b84 | 24 | |
a0599745 | 25 | #include "libguile/_scm.h" |
681b9005 MD |
26 | |
27 | #include <stdio.h> | |
783e7774 | 28 | #include <string.h> |
681b9005 MD |
29 | #ifdef HAVE_UNISTD_H |
30 | #include <unistd.h> | |
31 | #endif | |
32 | ||
a0599745 MD |
33 | #include "libguile/strports.h" |
34 | #include "libguile/read.h" | |
35 | #include "libguile/eval.h" | |
36 | #include "libguile/chars.h" | |
37 | #include "libguile/modules.h" | |
38 | #include "libguile/ports.h" | |
7e73eaee | 39 | #include "libguile/fluids.h" |
a0599745 | 40 | #include "libguile/strings.h" |
9293b3c6 | 41 | #include "libguile/init.h" |
4907ff5a | 42 | |
a0599745 | 43 | #include "libguile/gdbint.h" |
4907ff5a MD |
44 | \f |
45 | /* {Support for debugging with gdb} | |
46 | * | |
47 | * TODO: | |
48 | * | |
49 | * 1. Redirect outputs | |
50 | * 2. Catch errors | |
51 | * 3. Prevent print from causing segmentation fault when given broken pairs | |
52 | */ | |
53 | ||
4907ff5a MD |
54 | #define GDB_TYPE SCM |
55 | ||
a0599745 | 56 | #include "libguile/gdb_interface.h" |
4907ff5a MD |
57 | |
58 | \f | |
59 | ||
60 | /* Be carefull when this macro is true. | |
406c7d90 | 61 | scm_gc_running_p is set during gc. |
4907ff5a | 62 | */ |
406c7d90 | 63 | #define SCM_GC_P (scm_gc_running_p) |
4907ff5a MD |
64 | |
65 | /* Macros that encapsulate blocks of code which can be called by the | |
66 | * debugger. | |
67 | */ | |
68 | #define SCM_BEGIN_FOREIGN_BLOCK \ | |
d3a6bc94 | 69 | do { \ |
4907ff5a | 70 | scm_print_carefully_p = 1; \ |
d3a6bc94 | 71 | } while (0) |
4907ff5a MD |
72 | |
73 | ||
74 | #define SCM_END_FOREIGN_BLOCK \ | |
d3a6bc94 | 75 | do { \ |
4907ff5a | 76 | scm_print_carefully_p = 0; \ |
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; | |
105 | static SCM gdb_output_port; | |
4907ff5a | 106 | |
1cc91f1b | 107 | |
4907ff5a | 108 | int |
6e8d25a6 | 109 | gdb_maybe_valid_type_p (SCM value) |
4907ff5a | 110 | { |
26224b3f LC |
111 | return SCM_IMP (value); /* || scm_in_heap_p (value); */ /* FIXME: What to |
112 | do? */ | |
4907ff5a MD |
113 | } |
114 | ||
1cc91f1b | 115 | |
4907ff5a | 116 | int |
6e8d25a6 | 117 | gdb_read (char *str) |
4907ff5a | 118 | { |
26224b3f | 119 | #if 0 |
4907ff5a MD |
120 | SCM ans; |
121 | int status = 0; | |
122 | RESET_STRING; | |
123 | /* Need to be restrictive about what to read? */ | |
26224b3f | 124 | if (1) /* (SCM_GC_P) */ /* FIXME */ |
4907ff5a MD |
125 | { |
126 | char *p; | |
127 | for (p = str; *p != '\0'; ++p) | |
128 | switch (*p) | |
129 | { | |
130 | case '(': | |
131 | case '\'': | |
132 | case '"': | |
133 | SEND_STRING ("Can't read this kind of expressions during gc"); | |
134 | return -1; | |
135 | case '#': | |
136 | if (*++p == '\0') | |
137 | goto premature; | |
138 | if (*p == '\\') | |
139 | { | |
140 | if (*++p != '\0') | |
141 | continue; | |
142 | premature: | |
143 | SEND_STRING ("Premature end of lisp expression"); | |
144 | return -1; | |
145 | } | |
146 | default: | |
147 | continue; | |
148 | } | |
149 | } | |
150 | SCM_BEGIN_FOREIGN_BLOCK; | |
380b6b4c | 151 | unmark_port (gdb_input_port); |
e11e83f3 | 152 | scm_seek (gdb_input_port, SCM_INUM0, scm_from_int (SEEK_SET)); |
840ae05d | 153 | scm_puts (str, gdb_input_port); |
69bc9ff3 | 154 | scm_truncate_file (gdb_input_port, SCM_UNDEFINED); |
e11e83f3 | 155 | scm_seek (gdb_input_port, SCM_INUM0, scm_from_int (SEEK_SET)); |
7337d56d | 156 | |
4907ff5a | 157 | /* Read one object */ |
7337d56d | 158 | ans = scm_read (gdb_input_port); |
4907ff5a MD |
159 | if (SCM_GC_P) |
160 | { | |
380b6b4c | 161 | if (SCM_NIMP (ans)) |
4907ff5a MD |
162 | { |
163 | SEND_STRING ("Non-immediate created during gc. Memory may be trashed."); | |
164 | status = -1; | |
165 | goto exit; | |
166 | } | |
167 | } | |
380b6b4c | 168 | gdb_result = ans; |
f39448c5 | 169 | /* Protect answer from future GC (FIXME: still needed with BDW-GC?) */ |
380b6b4c MD |
170 | if (SCM_NIMP (ans)) |
171 | scm_permanent_object (ans); | |
4907ff5a | 172 | exit: |
380b6b4c | 173 | remark_port (gdb_input_port); |
4907ff5a MD |
174 | SCM_END_FOREIGN_BLOCK; |
175 | return status; | |
26224b3f LC |
176 | #else |
177 | abort (); | |
178 | #endif | |
4907ff5a MD |
179 | } |
180 | ||
1cc91f1b | 181 | |
4907ff5a | 182 | int |
6e8d25a6 | 183 | gdb_eval (SCM exp) |
4907ff5a MD |
184 | { |
185 | RESET_STRING; | |
4907ff5a MD |
186 | if (SCM_GC_P) |
187 | { | |
188 | SEND_STRING ("Can't evaluate lisp expressions during gc"); | |
189 | return -1; | |
190 | } | |
191 | SCM_BEGIN_FOREIGN_BLOCK; | |
192 | { | |
c2c4e281 | 193 | gdb_result = scm_permanent_object (scm_primitive_eval (exp)); |
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 | { | |
62e15979 | 237 | scm_define (name, value); |
4907ff5a MD |
238 | } |
239 | SCM_END_FOREIGN_BLOCK; | |
240 | return 0; | |
241 | } | |
242 | ||
243 | void | |
244 | scm_init_gdbint () | |
245 | { | |
246 | static char *s = "scm_init_gdb_interface"; | |
247 | SCM port; | |
248 | ||
249 | scm_print_carefully_p = 0; | |
0b2c2ba3 LC |
250 | |
251 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, | |
4907ff5a MD |
252 | SCM_OPN | SCM_WRTNG, |
253 | s); | |
254 | gdb_output_port = scm_permanent_object (port); | |
0b2c2ba3 LC |
255 | |
256 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, | |
840ae05d | 257 | SCM_OPN | SCM_RDNG | SCM_WRTNG, |
4907ff5a MD |
258 | s); |
259 | gdb_input_port = scm_permanent_object (port); | |
260 | } | |
89e00824 ML |
261 | |
262 | /* | |
263 | Local Variables: | |
264 | c-file-style: "gnu" | |
265 | End: | |
266 | */ |