Commit | Line | Data |
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1e598865 | 1 | /* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc. |
0f2d19dd JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
0f2d19dd JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
0f2d19dd JB |
41 | \f |
42 | ||
43 | #include <stdio.h> | |
44 | #include "_scm.h" | |
45 | ||
20e6290e JB |
46 | /* Everybody has an init function. */ |
47 | #include "alist.h" | |
20e6290e JB |
48 | #include "arbiters.h" |
49 | #include "async.h" | |
0e44fcca | 50 | #include "backtrace.h" |
20e6290e JB |
51 | #include "boolean.h" |
52 | #include "chars.h" | |
53 | #include "continuations.h" | |
54 | #ifdef DEBUG_EXTENSIONS | |
55 | #include "debug.h" | |
56 | #endif | |
70122cd3 | 57 | #include "dynl.h" |
20e6290e JB |
58 | #include "dynwind.h" |
59 | #include "eq.h" | |
60 | #include "error.h" | |
61 | #include "eval.h" | |
20e6290e | 62 | #include "feature.h" |
20e6290e | 63 | #include "filesys.h" |
ee3ea81d | 64 | #include "fluids.h" |
20e6290e JB |
65 | #include "fports.h" |
66 | #include "gc.h" | |
67 | #include "gdbint.h" | |
68 | #include "gsubr.h" | |
69 | #include "hash.h" | |
70 | #include "hashtab.h" | |
44e8413c MD |
71 | #ifdef GUILE_ISELECT |
72 | #include "iselect.h" | |
73 | #endif | |
20e6290e JB |
74 | #include "ioext.h" |
75 | #include "kw.h" | |
76 | #include "list.h" | |
77 | #include "load.h" | |
78 | #include "mallocs.h" | |
370312ae | 79 | #include "net_db.h" |
20e6290e | 80 | #include "numbers.h" |
0c32d76c | 81 | #include "objects.h" |
20e6290e JB |
82 | #include "objprop.h" |
83 | #include "options.h" | |
84 | #include "pairs.h" | |
85 | #include "ports.h" | |
86 | #include "posix.h" | |
f255378e JB |
87 | #ifdef HAVE_REGCOMP |
88 | #include "regex-posix.h" | |
89 | #endif | |
20e6290e JB |
90 | #include "print.h" |
91 | #include "procprop.h" | |
92 | #include "procs.h" | |
93 | #include "ramap.h" | |
94 | #include "read.h" | |
a2d4941f | 95 | #include "readline.h" |
20e6290e | 96 | #include "scmsigs.h" |
964edde7 | 97 | #include "script.h" |
20e6290e | 98 | #include "simpos.h" |
a8be22fe | 99 | #include "smob.h" |
20e6290e JB |
100 | #include "socket.h" |
101 | #include "srcprop.h" | |
102 | #include "stackchk.h" | |
0e44fcca | 103 | #include "stacks.h" |
20e6290e JB |
104 | #include "stime.h" |
105 | #include "strings.h" | |
106 | #include "strop.h" | |
107 | #include "strorder.h" | |
108 | #include "strports.h" | |
109 | #include "struct.h" | |
110 | #include "symbols.h" | |
111 | #include "tag.h" | |
112 | #include "throw.h" | |
113 | #include "unif.h" | |
114 | #include "variable.h" | |
115 | #include "vectors.h" | |
116 | #include "version.h" | |
117 | #include "vports.h" | |
118 | #include "weaks.h" | |
119 | ||
a8be22fe JB |
120 | #include "init.h" |
121 | ||
95b88819 GH |
122 | #ifdef HAVE_STRING_H |
123 | #include <string.h> | |
124 | #endif | |
125 | #ifdef HAVE_UNISTD_H | |
126 | #include <unistd.h> | |
127 | #endif | |
0f2d19dd JB |
128 | \f |
129 | ||
a4156763 MD |
130 | static void start_stack SCM_P ((void *base)); |
131 | static void restart_stack SCM_P ((void * base)); | |
1cdaaafb JB |
132 | |
133 | static void | |
a4156763 | 134 | start_stack (base) |
0f2d19dd | 135 | void * base; |
0f2d19dd | 136 | { |
9ef3d0ee | 137 | SCM root; |
0f2d19dd | 138 | |
9ef3d0ee MD |
139 | root = scm_permanent_object (scm_make_root (SCM_UNDEFINED)); |
140 | scm_set_root (SCM_ROOT_STATE (root)); | |
0f2d19dd JB |
141 | scm_stack_base = base; |
142 | ||
0f2d19dd JB |
143 | scm_exitval = SCM_BOOL_F; /* vestigial */ |
144 | ||
dc19d1d2 | 145 | scm_top_level_lookup_closure_var = SCM_BOOL_F; |
0f2d19dd JB |
146 | scm_system_transformer = SCM_BOOL_F; |
147 | ||
ee3ea81d MV |
148 | scm_root->fluids = scm_make_initial_fluids (); |
149 | ||
0f2d19dd JB |
150 | /* Create an object to hold the root continuation. |
151 | */ | |
152 | SCM_NEWCELL (scm_rootcont); | |
1cdaaafb JB |
153 | SCM_SETJMPBUF (scm_rootcont, scm_must_malloc ((long) sizeof (scm_contregs), |
154 | "continuation")); | |
898a256f | 155 | SCM_SETCAR (scm_rootcont, scm_tc7_contin); |
4b5166ac | 156 | SCM_SEQ (scm_rootcont) = 0; |
a4156763 | 157 | /* The root continuation if further initialized by restart_stack. */ |
0f2d19dd JB |
158 | |
159 | /* Create the look-aside stack for variables that are shared between | |
160 | * captured continuations. | |
161 | */ | |
1cdaaafb JB |
162 | scm_continuation_stack = scm_make_vector (SCM_MAKINUM (512), |
163 | SCM_UNDEFINED, SCM_UNDEFINED); | |
a4156763 | 164 | /* The continuation stack is further initialized by restart_stack. */ |
0f2d19dd | 165 | |
1cdaaafb JB |
166 | /* The remainder of stack initialization is factored out to another |
167 | * function so that if this stack is ever exitted, it can be | |
a4156763 MD |
168 | * re-entered using restart_stack. */ |
169 | restart_stack (base); | |
0f2d19dd JB |
170 | } |
171 | ||
172 | ||
1cdaaafb | 173 | static void |
a4156763 | 174 | restart_stack (base) |
0f2d19dd | 175 | void * base; |
0f2d19dd JB |
176 | { |
177 | scm_dynwinds = SCM_EOL; | |
178 | SCM_DYNENV (scm_rootcont) = SCM_EOL; | |
179 | SCM_THROW_VALUE (scm_rootcont) = SCM_EOL; | |
4e1caa79 | 180 | #ifdef DEBUG_EXTENSIONS |
4b5166ac | 181 | SCM_DFRAME (scm_rootcont) = scm_last_debug_frame = 0; |
4e1caa79 | 182 | #endif |
0f2d19dd JB |
183 | SCM_BASE (scm_rootcont) = base; |
184 | scm_continuation_stack_ptr = SCM_MAKINUM (0); | |
185 | } | |
186 | ||
187 | #if 0 | |
188 | static char remsg[] = "remove\n#define ", addmsg[] = "add\n#define "; | |
189 | ||
1cc91f1b JB |
190 | |
191 | static void fixconfig SCM_P ((char *s1, char *s2, int s)); | |
192 | ||
0f2d19dd JB |
193 | static void |
194 | fixconfig (s1, s2, s) | |
195 | char *s1; | |
196 | char *s2; | |
197 | int s; | |
0f2d19dd JB |
198 | { |
199 | fputs (s1, stderr); | |
200 | fputs (s2, stderr); | |
201 | fputs ("\nin ", stderr); | |
202 | fputs (s ? "setjump" : "scmfig", stderr); | |
203 | fputs (".h and recompile scm\n", stderr); | |
204 | exit (1); | |
205 | } | |
206 | ||
207 | ||
1cc91f1b | 208 | static void check_config SCM_P ((void)); |
0f2d19dd JB |
209 | |
210 | static void | |
211 | check_config () | |
212 | { | |
213 | scm_sizet j; | |
214 | ||
215 | j = HEAP_SEG_SIZE; | |
216 | if (HEAP_SEG_SIZE != j) | |
217 | fixconfig ("reduce", "size of HEAP_SEG_SIZE", 0); | |
218 | ||
219 | #ifdef SCM_SINGLES | |
220 | if (sizeof (float) != sizeof (long)) | |
221 | fixconfig (remsg, "SCM_SINGLES", 0); | |
222 | #endif /* def SCM_SINGLES */ | |
223 | ||
224 | ||
225 | #ifdef SCM_BIGDIG | |
226 | if (2 * SCM_BITSPERDIG / SCM_CHAR_BIT > sizeof (long)) | |
227 | fixconfig (remsg, "SCM_BIGDIG", 0); | |
228 | #ifndef SCM_DIGSTOOBIG | |
229 | if (SCM_DIGSPERLONG * sizeof (SCM_BIGDIG) > sizeof (long)) | |
230 | fixconfig (addmsg, "SCM_DIGSTOOBIG", 0); | |
231 | #endif | |
232 | #endif | |
233 | ||
234 | #ifdef SCM_STACK_GROWS_UP | |
235 | if (((SCM_STACKITEM *) & j - stack_start_ptr) < 0) | |
236 | fixconfig (remsg, "SCM_STACK_GROWS_UP", 1); | |
237 | #else | |
238 | if ((stack_start_ptr - (SCM_STACKITEM *) & j) < 0) | |
239 | fixconfig (addmsg, "SCM_STACK_GROWS_UP", 1); | |
240 | #endif | |
241 | } | |
242 | #endif | |
243 | ||
244 | ||
245 | \f | |
1cdaaafb JB |
246 | /* initializing standard and current I/O ports */ |
247 | ||
248 | /* Create standard ports from stdio stdin, stdout, and stderr. */ | |
249 | static void | |
250 | scm_init_standard_ports () | |
251 | { | |
94754080 JB |
252 | /* From the SCSH manual: |
253 | ||
254 | It can be useful to turn I/O buffering off in some cases, for | |
255 | example when an I/O stream is to be shared by multiple | |
256 | subprocesses. For this reason, scsh allocates an unbuffered port | |
257 | for file descriptor 0 at start-up time. | |
258 | ||
259 | Because shells frequently share stdin with subprocesses, if the | |
260 | shell does buffered reads, it might ``steal'' input intended for | |
261 | a subprocess. For this reason, all shells, including sh, csh, | |
262 | and scsh, read stdin unbuffered. Applications that can tolerate | |
263 | buffered input on stdin can reset \ex{(current-input-port)} to | |
264 | block buffering for higher performance. */ | |
1cdaaafb JB |
265 | scm_def_inp = scm_stdio_to_port (stdin, |
266 | (isatty (fileno (stdin)) ? "r0" : "r"), | |
267 | "standard input"); | |
268 | scm_def_outp = scm_stdio_to_port (stdout, "w", "standard output"); | |
269 | scm_def_errp = scm_stdio_to_port (stderr, "w", "standard error"); | |
270 | ||
271 | scm_cur_inp = scm_def_inp; | |
272 | scm_cur_outp = scm_def_outp; | |
273 | scm_cur_errp = scm_def_errp; | |
1a64191e | 274 | scm_cur_loadp = SCM_BOOL_F; |
1cdaaafb JB |
275 | } |
276 | ||
277 | ||
278 | \f | |
0f2d19dd JB |
279 | #ifdef _UNICOS |
280 | typedef int setjmp_type; | |
281 | #else | |
282 | typedef long setjmp_type; | |
283 | #endif | |
284 | ||
816a6f06 JB |
285 | /* All the data needed to invoke the main function. */ |
286 | struct main_func_closure | |
287 | { | |
288 | /* the function to call */ | |
289 | void (*main_func) SCM_P ((void *closure, int argc, char **argv)); | |
290 | void *closure; /* dummy data to pass it */ | |
291 | int argc; | |
292 | char **argv; /* the argument list it should receive */ | |
293 | }; | |
294 | ||
295 | ||
296 | static void scm_boot_guile_1 SCM_P ((SCM_STACKITEM *base, | |
297 | struct main_func_closure *closure)); | |
39752bec | 298 | static SCM invoke_main_func SCM_P ((void *body_data)); |
1cdaaafb JB |
299 | |
300 | ||
301 | /* Fire up the Guile Scheme interpreter. | |
302 | ||
303 | Call MAIN_FUNC, passing it CLOSURE, ARGC, and ARGV. MAIN_FUNC | |
304 | should do all the work of the program (initializing other packages, | |
305 | reading user input, etc.) before returning. When MAIN_FUNC | |
306 | returns, call exit (0); this function never returns. If you want | |
307 | some other exit value, MAIN_FUNC may call exit itself. | |
0f2d19dd | 308 | |
1cdaaafb JB |
309 | scm_boot_guile arranges for program-arguments to return the strings |
310 | given by ARGC and ARGV. If MAIN_FUNC modifies ARGC/ARGV, should | |
311 | call scm_set_program_arguments with the final list, so Scheme code | |
312 | will know which arguments have been processed. | |
c275ddc7 | 313 | |
816a6f06 JB |
314 | scm_boot_guile establishes a catch-all catch handler which prints |
315 | an error message and exits the process. This means that Guile | |
316 | exits in a coherent way when system errors occur and the user isn't | |
317 | prepared to handle it. If the user doesn't like this behavior, | |
318 | they can establish their own universal catcher to shadow this one. | |
319 | ||
1cdaaafb JB |
320 | Why must the caller do all the real work from MAIN_FUNC? The |
321 | garbage collector assumes that all local variables of type SCM will | |
322 | be above scm_boot_guile's stack frame on the stack. If you try to | |
323 | manipulate SCM values after this function returns, it's the luck of | |
324 | the draw whether the GC will be able to find the objects you | |
325 | allocate. So, scm_boot_guile function exits, rather than | |
326 | returning, to discourage people from making that mistake. */ | |
327 | ||
328 | ||
329 | void | |
330 | scm_boot_guile (argc, argv, main_func, closure) | |
0f2d19dd JB |
331 | int argc; |
332 | char ** argv; | |
1cdaaafb JB |
333 | void (*main_func) (); |
334 | void *closure; | |
c275ddc7 | 335 | { |
1cdaaafb JB |
336 | /* The garbage collector uses the address of this variable as one |
337 | end of the stack, and the address of one of its own local | |
338 | variables as the other end. */ | |
c275ddc7 | 339 | SCM_STACKITEM dummy; |
816a6f06 | 340 | struct main_func_closure c; |
c275ddc7 | 341 | |
816a6f06 JB |
342 | c.main_func = main_func; |
343 | c.closure = closure; | |
344 | c.argc = argc; | |
345 | c.argv = argv; | |
346 | ||
1595aa56 | 347 | scm_boot_guile_1 (&dummy, &c); |
c275ddc7 JB |
348 | } |
349 | ||
816a6f06 | 350 | |
70122cd3 MV |
351 | /* Record here whether SCM_BOOT_GUILE_1 has already been called. This |
352 | variable is now here and not inside SCM_BOOT_GUILE_1 so that one | |
353 | can tweak it. This is necessary for unexec to work. (Hey, "1-live" | |
354 | is the name of a local radiostation...) */ | |
355 | ||
356 | int scm_boot_guile_1_live = 0; | |
1cdaaafb JB |
357 | |
358 | static void | |
816a6f06 | 359 | scm_boot_guile_1 (base, closure) |
c275ddc7 | 360 | SCM_STACKITEM *base; |
816a6f06 | 361 | struct main_func_closure *closure; |
0f2d19dd JB |
362 | { |
363 | static int initialized = 0; | |
70122cd3 | 364 | /* static int live = 0; */ |
0f2d19dd | 365 | setjmp_type setjmp_val; |
0f2d19dd | 366 | |
1cdaaafb | 367 | /* This function is not re-entrant. */ |
70122cd3 | 368 | if (scm_boot_guile_1_live) |
1cdaaafb | 369 | abort (); |
0f2d19dd | 370 | |
70122cd3 | 371 | scm_boot_guile_1_live = 1; |
0f2d19dd JB |
372 | |
373 | scm_ints_disabled = 1; | |
374 | scm_block_gc = 1; | |
375 | ||
376 | if (initialized) | |
377 | { | |
a4156763 | 378 | restart_stack (base); |
0f2d19dd JB |
379 | } |
380 | else | |
381 | { | |
382 | scm_ports_prehistory (); | |
383 | scm_smob_prehistory (); | |
384 | scm_tables_prehistory (); | |
385 | scm_init_storage (0); | |
9ef3d0ee MD |
386 | scm_init_root (); |
387 | #ifdef USE_THREADS | |
a239e35b | 388 | scm_init_threads (base); |
9ef3d0ee | 389 | #endif |
a4156763 | 390 | start_stack (base); |
0f2d19dd JB |
391 | scm_init_gsubr (); |
392 | scm_init_feature (); | |
393 | scm_init_alist (); | |
0f2d19dd JB |
394 | scm_init_arbiters (); |
395 | scm_init_async (); | |
396 | scm_init_boolean (); | |
397 | scm_init_chars (); | |
398 | scm_init_continuations (); | |
399 | scm_init_dynwind (); | |
400 | scm_init_eq (); | |
401 | scm_init_error (); | |
ee3ea81d | 402 | scm_init_fluids (); |
a5d6d578 | 403 | scm_init_backtrace (); /* Requires fluids */ |
0f2d19dd | 404 | scm_init_fports (); |
0f2d19dd JB |
405 | scm_init_filesys (); |
406 | scm_init_gc (); | |
68cd9c71 | 407 | scm_init_gdbint (); |
0f2d19dd JB |
408 | scm_init_hash (); |
409 | scm_init_hashtab (); | |
44e8413c MD |
410 | #ifdef GUILE_ISELECT |
411 | scm_init_iselect (); | |
412 | #endif | |
0f2d19dd JB |
413 | scm_init_ioext (); |
414 | scm_init_kw (); | |
415 | scm_init_list (); | |
416 | scm_init_mallocs (); | |
370312ae | 417 | scm_init_net_db (); |
0f2d19dd JB |
418 | scm_init_numbers (); |
419 | scm_init_objprop (); | |
4e1caa79 | 420 | scm_init_options (); |
0f2d19dd JB |
421 | scm_init_pairs (); |
422 | scm_init_ports (); | |
423 | scm_init_posix (); | |
f255378e JB |
424 | #ifdef HAVE_REGCOMP |
425 | scm_init_regex_posix (); | |
426 | #endif | |
0f2d19dd JB |
427 | scm_init_procs (); |
428 | scm_init_procprop (); | |
0f2d19dd JB |
429 | scm_init_scmsigs (); |
430 | scm_init_socket (); | |
4e1caa79 MD |
431 | #ifdef DEBUG_EXTENSIONS |
432 | scm_init_srcprop (); | |
433 | #endif | |
0f2d19dd | 434 | scm_init_stackchk (); |
7439c0b9 | 435 | scm_init_struct (); /* Requires struct */ |
0e44fcca | 436 | scm_init_stacks (); |
0f2d19dd | 437 | scm_init_strports (); |
0f2d19dd JB |
438 | scm_init_symbols (); |
439 | scm_init_tag (); | |
440 | scm_init_load (); | |
0c32d76c | 441 | scm_init_objects (); /* Requires struct */ |
90b826c9 | 442 | scm_init_print (); /* Requires struct */ |
0f2d19dd | 443 | scm_init_read (); |
0f2d19dd JB |
444 | scm_init_stime (); |
445 | scm_init_strings (); | |
446 | scm_init_strorder (); | |
0f2d19dd JB |
447 | scm_init_strop (); |
448 | scm_init_throw (); | |
449 | scm_init_variable (); | |
450 | scm_init_vectors (); | |
9d7e1edf | 451 | scm_init_version (); |
0f2d19dd JB |
452 | scm_init_weaks (); |
453 | scm_init_vports (); | |
454 | scm_init_eval (); | |
0e44fcca MD |
455 | #ifdef DEBUG_EXTENSIONS |
456 | scm_init_debug (); /* Requires macro smobs */ | |
457 | #endif | |
0f2d19dd JB |
458 | scm_init_ramap (); |
459 | scm_init_unif (); | |
460 | scm_init_simpos (); | |
24f93c27 | 461 | scm_init_load_path (); |
dd15c210 | 462 | #ifdef HAVE_RL_GETC_FUNCTION |
a2d4941f JB |
463 | scm_init_readline (); |
464 | #endif | |
1cdaaafb | 465 | scm_init_standard_ports (); |
70122cd3 | 466 | scm_init_dynamic_linking (); |
0487b82f | 467 | scm_init_script (); |
0f2d19dd JB |
468 | initialized = 1; |
469 | } | |
470 | ||
471 | scm_block_gc = 0; /* permit the gc to run */ | |
472 | /* ints still disabled */ | |
473 | ||
1cdaaafb JB |
474 | #ifdef STACK_CHECKING |
475 | scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P; | |
476 | #endif | |
0f2d19dd | 477 | |
1cdaaafb JB |
478 | setjmp_val = setjmp (SCM_JMPBUF (scm_rootcont)); |
479 | if (!setjmp_val) | |
480 | { | |
816a6f06 JB |
481 | scm_set_program_arguments (closure->argc, closure->argv, 0); |
482 | scm_internal_catch (SCM_BOOL_T, invoke_main_func, closure, | |
483 | scm_handle_by_message, 0); | |
1cdaaafb | 484 | } |
0f2d19dd | 485 | |
1cdaaafb | 486 | scm_restore_signals (); |
0f2d19dd | 487 | |
1cdaaafb JB |
488 | /* This tick gives any pending |
489 | * asyncs a chance to run. This must be done after | |
490 | * the call to scm_restore_signals. | |
491 | */ | |
492 | SCM_ASYNC_TICK; | |
493 | ||
494 | /* If the caller doesn't want this, they should return from | |
495 | main_func themselves. */ | |
496 | exit (0); | |
0f2d19dd | 497 | } |
816a6f06 JB |
498 | |
499 | ||
500 | static SCM | |
39752bec | 501 | invoke_main_func (body_data) |
816a6f06 | 502 | void *body_data; |
816a6f06 JB |
503 | { |
504 | struct main_func_closure *closure = (struct main_func_closure *) body_data; | |
505 | ||
506 | (*closure->main_func) (closure->closure, closure->argc, closure->argv); | |
507 | ||
508 | /* never reached */ | |
509 | return SCM_UNDEFINED; | |
510 | } |