Commit | Line | Data |
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4907ff5a | 1 | /* GDB interface for Guile |
bc8e6d7d MW |
2 | * Copyright (C) 1996,1997,1999,2000,2001,2002,2004,2009,2011,2012, |
3 | * 2014 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 | 29 | #include <unistd.h> |
681b9005 | 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 | 68 | scm_print_carefully_p = 1; \ |
d3a6bc94 | 69 | } while (0) |
4907ff5a MD |
70 | |
71 | ||
72 | #define SCM_END_FOREIGN_BLOCK \ | |
d3a6bc94 | 73 | do { \ |
4907ff5a | 74 | scm_print_carefully_p = 0; \ |
d3a6bc94 | 75 | } while (0) |
4907ff5a MD |
76 | |
77 | ||
78 | #define RESET_STRING { gdb_output_length = 0; } | |
79 | ||
80 | #define SEND_STRING(str) \ | |
d3a6bc94 | 81 | do { \ |
a57c1cc7 MD |
82 | gdb_output = (char *) (str); \ |
83 | gdb_output_length = strlen ((const char *) (str)); \ | |
d3a6bc94 | 84 | } while (0) |
380b6b4c | 85 | |
4907ff5a MD |
86 | |
87 | /* {Gdb interface} | |
88 | */ | |
89 | ||
90 | unsigned short gdb_options = GDB_HAVE_BINDINGS; | |
91 | ||
92 | char *gdb_language = "lisp/c"; | |
93 | ||
94 | SCM gdb_result; | |
95 | ||
96 | char *gdb_output; | |
97 | ||
98 | int gdb_output_length; | |
99 | ||
100 | int scm_print_carefully_p; | |
101 | ||
102 | static SCM gdb_input_port; | |
103 | static SCM gdb_output_port; | |
4907ff5a | 104 | |
1cc91f1b | 105 | |
4907ff5a | 106 | int |
6e8d25a6 | 107 | gdb_maybe_valid_type_p (SCM value) |
4907ff5a | 108 | { |
26224b3f LC |
109 | return SCM_IMP (value); /* || scm_in_heap_p (value); */ /* FIXME: What to |
110 | do? */ | |
4907ff5a MD |
111 | } |
112 | ||
1cc91f1b | 113 | |
4907ff5a | 114 | int |
6e8d25a6 | 115 | gdb_read (char *str) |
4907ff5a | 116 | { |
26224b3f | 117 | #if 0 |
4907ff5a MD |
118 | SCM ans; |
119 | int status = 0; | |
120 | RESET_STRING; | |
121 | /* Need to be restrictive about what to read? */ | |
26224b3f | 122 | if (1) /* (SCM_GC_P) */ /* FIXME */ |
4907ff5a MD |
123 | { |
124 | char *p; | |
125 | for (p = str; *p != '\0'; ++p) | |
126 | switch (*p) | |
127 | { | |
128 | case '(': | |
129 | case '\'': | |
130 | case '"': | |
131 | SEND_STRING ("Can't read this kind of expressions during gc"); | |
132 | return -1; | |
133 | case '#': | |
134 | if (*++p == '\0') | |
135 | goto premature; | |
136 | if (*p == '\\') | |
137 | { | |
138 | if (*++p != '\0') | |
139 | continue; | |
140 | premature: | |
141 | SEND_STRING ("Premature end of lisp expression"); | |
142 | return -1; | |
143 | } | |
144 | default: | |
145 | continue; | |
146 | } | |
147 | } | |
148 | SCM_BEGIN_FOREIGN_BLOCK; | |
380b6b4c | 149 | unmark_port (gdb_input_port); |
e11e83f3 | 150 | scm_seek (gdb_input_port, SCM_INUM0, scm_from_int (SEEK_SET)); |
840ae05d | 151 | scm_puts (str, gdb_input_port); |
69bc9ff3 | 152 | scm_truncate_file (gdb_input_port, SCM_UNDEFINED); |
e11e83f3 | 153 | scm_seek (gdb_input_port, SCM_INUM0, scm_from_int (SEEK_SET)); |
7337d56d | 154 | |
4907ff5a | 155 | /* Read one object */ |
7337d56d | 156 | ans = scm_read (gdb_input_port); |
4907ff5a MD |
157 | if (SCM_GC_P) |
158 | { | |
380b6b4c | 159 | if (SCM_NIMP (ans)) |
4907ff5a MD |
160 | { |
161 | SEND_STRING ("Non-immediate created during gc. Memory may be trashed."); | |
162 | status = -1; | |
163 | goto exit; | |
164 | } | |
165 | } | |
380b6b4c | 166 | gdb_result = ans; |
f39448c5 | 167 | /* Protect answer from future GC (FIXME: still needed with BDW-GC?) */ |
380b6b4c MD |
168 | if (SCM_NIMP (ans)) |
169 | scm_permanent_object (ans); | |
4907ff5a | 170 | exit: |
380b6b4c | 171 | remark_port (gdb_input_port); |
4907ff5a MD |
172 | SCM_END_FOREIGN_BLOCK; |
173 | return status; | |
26224b3f LC |
174 | #else |
175 | abort (); | |
176 | #endif | |
4907ff5a MD |
177 | } |
178 | ||
1cc91f1b | 179 | |
4907ff5a | 180 | int |
6e8d25a6 | 181 | gdb_eval (SCM exp) |
4907ff5a MD |
182 | { |
183 | RESET_STRING; | |
4907ff5a MD |
184 | if (SCM_GC_P) |
185 | { | |
186 | SEND_STRING ("Can't evaluate lisp expressions during gc"); | |
187 | return -1; | |
188 | } | |
189 | SCM_BEGIN_FOREIGN_BLOCK; | |
190 | { | |
c2c4e281 | 191 | gdb_result = scm_permanent_object (scm_primitive_eval (exp)); |
4907ff5a MD |
192 | } |
193 | SCM_END_FOREIGN_BLOCK; | |
194 | return 0; | |
195 | } | |
196 | ||
1cc91f1b | 197 | |
4907ff5a | 198 | int |
6e8d25a6 | 199 | gdb_print (SCM obj) |
4907ff5a | 200 | { |
9293b3c6 MD |
201 | if (!scm_initialized_p) |
202 | SEND_STRING ("*** Guile not initialized ***"); | |
203 | else | |
204 | { | |
205 | RESET_STRING; | |
206 | SCM_BEGIN_FOREIGN_BLOCK; | |
207 | /* Reset stream */ | |
e11e83f3 | 208 | scm_seek (gdb_output_port, SCM_INUM0, scm_from_int (SEEK_SET)); |
9293b3c6 MD |
209 | scm_write (obj, gdb_output_port); |
210 | scm_truncate_file (gdb_output_port, SCM_UNDEFINED); | |
211 | { | |
92c2555f | 212 | scm_t_port *pt = SCM_PTAB_ENTRY (gdb_output_port); |
9293b3c6 MD |
213 | |
214 | scm_flush (gdb_output_port); | |
215 | *(pt->write_buf + pt->read_buf_size) = 0; | |
216 | SEND_STRING (pt->read_buf); | |
217 | } | |
218 | SCM_END_FOREIGN_BLOCK; | |
219 | } | |
4907ff5a MD |
220 | return 0; |
221 | } | |
222 | ||
1cc91f1b | 223 | |
4907ff5a | 224 | int |
6e8d25a6 | 225 | gdb_binding (SCM name, SCM value) |
4907ff5a MD |
226 | { |
227 | RESET_STRING; | |
228 | if (SCM_GC_P) | |
229 | { | |
230 | SEND_STRING ("Can't create new bindings during gc"); | |
231 | return -1; | |
232 | } | |
233 | SCM_BEGIN_FOREIGN_BLOCK; | |
234 | { | |
62e15979 | 235 | scm_define (name, value); |
4907ff5a MD |
236 | } |
237 | SCM_END_FOREIGN_BLOCK; | |
238 | return 0; | |
239 | } | |
240 | ||
241 | void | |
242 | scm_init_gdbint () | |
243 | { | |
244 | static char *s = "scm_init_gdb_interface"; | |
245 | SCM port; | |
246 | ||
247 | scm_print_carefully_p = 0; | |
0b2c2ba3 LC |
248 | |
249 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, | |
4907ff5a MD |
250 | SCM_OPN | SCM_WRTNG, |
251 | s); | |
252 | gdb_output_port = scm_permanent_object (port); | |
0b2c2ba3 LC |
253 | |
254 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, | |
840ae05d | 255 | SCM_OPN | SCM_RDNG | SCM_WRTNG, |
4907ff5a MD |
256 | s); |
257 | gdb_input_port = scm_permanent_object (port); | |
258 | } | |
89e00824 ML |
259 | |
260 | /* | |
261 | Local Variables: | |
262 | c-file-style: "gnu" | |
263 | End: | |
264 | */ |