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0f2d19dd JB |
1 | /* Copyright (C) 1995,1996 Free Software Foundation, Inc. |
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 | |
15 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
16 | * | |
17 | * As a special exception, the Free Software Foundation gives permission | |
18 | * for additional uses of the text contained in its release of GUILE. | |
19 | * | |
20 | * The exception is that, if you link the GUILE library with other files | |
21 | * to produce an executable, this does not by itself cause the | |
22 | * resulting executable to be covered by the GNU General Public License. | |
23 | * Your use of that executable is in no way restricted on account of | |
24 | * linking the GUILE library code into it. | |
25 | * | |
26 | * This exception does not however invalidate any other reasons why | |
27 | * the executable file might be covered by the GNU General Public License. | |
28 | * | |
29 | * This exception applies only to the code released by the | |
30 | * Free Software Foundation under the name GUILE. If you copy | |
31 | * code from other Free Software Foundation releases into a copy of | |
32 | * GUILE, as the General Public License permits, the exception does | |
33 | * not apply to the code that you add in this way. To avoid misleading | |
34 | * anyone as to the status of such modified files, you must delete | |
35 | * this exception notice from them. | |
36 | * | |
37 | * If you write modifications of your own for GUILE, it is your choice | |
38 | * whether to permit this exception to apply to your modifications. | |
39 | * If you do not wish that, delete this exception notice. | |
40 | */ | |
41 | \f | |
42 | ||
43 | #include <stdio.h> | |
44 | #include "_scm.h" | |
45 | ||
20e6290e JB |
46 | /* Everybody has an init function. */ |
47 | #include "alist.h" | |
48 | #include "append.h" | |
49 | #include "arbiters.h" | |
50 | #include "async.h" | |
0e44fcca | 51 | #include "backtrace.h" |
20e6290e JB |
52 | #include "boolean.h" |
53 | #include "chars.h" | |
54 | #include "continuations.h" | |
55 | #ifdef DEBUG_EXTENSIONS | |
56 | #include "debug.h" | |
57 | #endif | |
70122cd3 | 58 | #include "dynl.h" |
20e6290e JB |
59 | #include "dynwind.h" |
60 | #include "eq.h" | |
61 | #include "error.h" | |
62 | #include "eval.h" | |
20e6290e | 63 | #include "feature.h" |
20e6290e JB |
64 | #include "filesys.h" |
65 | #include "fports.h" | |
66 | #include "gc.h" | |
67 | #include "gdbint.h" | |
68 | #include "gsubr.h" | |
69 | #include "hash.h" | |
70 | #include "hashtab.h" | |
71 | #include "ioext.h" | |
72 | #include "kw.h" | |
73 | #include "list.h" | |
74 | #include "load.h" | |
75 | #include "mallocs.h" | |
76 | #include "mbstrings.h" | |
370312ae | 77 | #include "net_db.h" |
20e6290e JB |
78 | #include "numbers.h" |
79 | #include "objprop.h" | |
80 | #include "options.h" | |
81 | #include "pairs.h" | |
82 | #include "ports.h" | |
83 | #include "posix.h" | |
84 | #include "print.h" | |
85 | #include "procprop.h" | |
86 | #include "procs.h" | |
87 | #include "ramap.h" | |
88 | #include "read.h" | |
89 | #include "scmsigs.h" | |
90 | #include "sequences.h" | |
91 | #include "simpos.h" | |
a8be22fe | 92 | #include "smob.h" |
20e6290e JB |
93 | #include "socket.h" |
94 | #include "srcprop.h" | |
95 | #include "stackchk.h" | |
0e44fcca | 96 | #include "stacks.h" |
20e6290e JB |
97 | #include "stime.h" |
98 | #include "strings.h" | |
99 | #include "strop.h" | |
100 | #include "strorder.h" | |
101 | #include "strports.h" | |
102 | #include "struct.h" | |
103 | #include "symbols.h" | |
104 | #include "tag.h" | |
105 | #include "throw.h" | |
106 | #include "unif.h" | |
107 | #include "variable.h" | |
108 | #include "vectors.h" | |
109 | #include "version.h" | |
110 | #include "vports.h" | |
111 | #include "weaks.h" | |
112 | ||
a8be22fe JB |
113 | #include "init.h" |
114 | ||
95b88819 GH |
115 | #ifdef HAVE_STRING_H |
116 | #include <string.h> | |
117 | #endif | |
118 | #ifdef HAVE_UNISTD_H | |
119 | #include <unistd.h> | |
120 | #endif | |
0f2d19dd JB |
121 | \f |
122 | ||
1cdaaafb JB |
123 | static void scm_start_stack SCM_P ((void *base)); |
124 | static void scm_restart_stack SCM_P ((void * base)); | |
125 | ||
126 | static void | |
127 | scm_start_stack (base) | |
0f2d19dd | 128 | void * base; |
0f2d19dd | 129 | { |
9ef3d0ee | 130 | SCM root; |
0f2d19dd | 131 | |
9ef3d0ee MD |
132 | root = scm_permanent_object (scm_make_root (SCM_UNDEFINED)); |
133 | scm_set_root (SCM_ROOT_STATE (root)); | |
0f2d19dd JB |
134 | scm_stack_base = base; |
135 | ||
0f2d19dd JB |
136 | scm_exitval = SCM_BOOL_F; /* vestigial */ |
137 | ||
dc19d1d2 | 138 | scm_top_level_lookup_closure_var = SCM_BOOL_F; |
0f2d19dd JB |
139 | scm_system_transformer = SCM_BOOL_F; |
140 | ||
5aab5d96 MD |
141 | scm_the_last_stack_var = SCM_BOOL_F; |
142 | ||
0f2d19dd JB |
143 | /* Create an object to hold the root continuation. |
144 | */ | |
145 | SCM_NEWCELL (scm_rootcont); | |
1cdaaafb JB |
146 | SCM_SETJMPBUF (scm_rootcont, scm_must_malloc ((long) sizeof (scm_contregs), |
147 | "continuation")); | |
898a256f | 148 | SCM_SETCAR (scm_rootcont, scm_tc7_contin); |
4b5166ac | 149 | SCM_SEQ (scm_rootcont) = 0; |
0f2d19dd JB |
150 | /* The root continuation if further initialized by scm_restart_stack. */ |
151 | ||
152 | /* Create the look-aside stack for variables that are shared between | |
153 | * captured continuations. | |
154 | */ | |
1cdaaafb JB |
155 | scm_continuation_stack = scm_make_vector (SCM_MAKINUM (512), |
156 | SCM_UNDEFINED, SCM_UNDEFINED); | |
0f2d19dd JB |
157 | /* The continuation stack is further initialized by scm_restart_stack. */ |
158 | ||
1cdaaafb JB |
159 | /* The remainder of stack initialization is factored out to another |
160 | * function so that if this stack is ever exitted, it can be | |
161 | * re-entered using scm_restart_stack. */ | |
0f2d19dd JB |
162 | scm_restart_stack (base); |
163 | } | |
164 | ||
165 | ||
1cdaaafb | 166 | static void |
0f2d19dd JB |
167 | scm_restart_stack (base) |
168 | void * base; | |
0f2d19dd JB |
169 | { |
170 | scm_dynwinds = SCM_EOL; | |
171 | SCM_DYNENV (scm_rootcont) = SCM_EOL; | |
172 | SCM_THROW_VALUE (scm_rootcont) = SCM_EOL; | |
4e1caa79 | 173 | #ifdef DEBUG_EXTENSIONS |
4b5166ac | 174 | SCM_DFRAME (scm_rootcont) = scm_last_debug_frame = 0; |
4e1caa79 | 175 | #endif |
0f2d19dd JB |
176 | SCM_BASE (scm_rootcont) = base; |
177 | scm_continuation_stack_ptr = SCM_MAKINUM (0); | |
178 | } | |
179 | ||
180 | #if 0 | |
181 | static char remsg[] = "remove\n#define ", addmsg[] = "add\n#define "; | |
182 | ||
1cc91f1b JB |
183 | |
184 | static void fixconfig SCM_P ((char *s1, char *s2, int s)); | |
185 | ||
0f2d19dd JB |
186 | static void |
187 | fixconfig (s1, s2, s) | |
188 | char *s1; | |
189 | char *s2; | |
190 | int s; | |
0f2d19dd JB |
191 | { |
192 | fputs (s1, stderr); | |
193 | fputs (s2, stderr); | |
194 | fputs ("\nin ", stderr); | |
195 | fputs (s ? "setjump" : "scmfig", stderr); | |
196 | fputs (".h and recompile scm\n", stderr); | |
197 | exit (1); | |
198 | } | |
199 | ||
200 | ||
1cc91f1b | 201 | static void check_config SCM_P ((void)); |
0f2d19dd JB |
202 | |
203 | static void | |
204 | check_config () | |
205 | { | |
206 | scm_sizet j; | |
207 | ||
208 | j = HEAP_SEG_SIZE; | |
209 | if (HEAP_SEG_SIZE != j) | |
210 | fixconfig ("reduce", "size of HEAP_SEG_SIZE", 0); | |
211 | ||
212 | #ifdef SCM_SINGLES | |
213 | if (sizeof (float) != sizeof (long)) | |
214 | fixconfig (remsg, "SCM_SINGLES", 0); | |
215 | #endif /* def SCM_SINGLES */ | |
216 | ||
217 | ||
218 | #ifdef SCM_BIGDIG | |
219 | if (2 * SCM_BITSPERDIG / SCM_CHAR_BIT > sizeof (long)) | |
220 | fixconfig (remsg, "SCM_BIGDIG", 0); | |
221 | #ifndef SCM_DIGSTOOBIG | |
222 | if (SCM_DIGSPERLONG * sizeof (SCM_BIGDIG) > sizeof (long)) | |
223 | fixconfig (addmsg, "SCM_DIGSTOOBIG", 0); | |
224 | #endif | |
225 | #endif | |
226 | ||
227 | #ifdef SCM_STACK_GROWS_UP | |
228 | if (((SCM_STACKITEM *) & j - stack_start_ptr) < 0) | |
229 | fixconfig (remsg, "SCM_STACK_GROWS_UP", 1); | |
230 | #else | |
231 | if ((stack_start_ptr - (SCM_STACKITEM *) & j) < 0) | |
232 | fixconfig (addmsg, "SCM_STACK_GROWS_UP", 1); | |
233 | #endif | |
234 | } | |
235 | #endif | |
236 | ||
237 | ||
238 | \f | |
1cdaaafb JB |
239 | /* initializing standard and current I/O ports */ |
240 | ||
241 | /* Create standard ports from stdio stdin, stdout, and stderr. */ | |
242 | static void | |
243 | scm_init_standard_ports () | |
244 | { | |
245 | /* I'm not sure why this should be unbuffered when coming from a | |
246 | tty; isn't line buffering more common? */ | |
247 | scm_def_inp = scm_stdio_to_port (stdin, | |
248 | (isatty (fileno (stdin)) ? "r0" : "r"), | |
249 | "standard input"); | |
250 | scm_def_outp = scm_stdio_to_port (stdout, "w", "standard output"); | |
251 | scm_def_errp = scm_stdio_to_port (stderr, "w", "standard error"); | |
252 | ||
253 | scm_cur_inp = scm_def_inp; | |
254 | scm_cur_outp = scm_def_outp; | |
255 | scm_cur_errp = scm_def_errp; | |
256 | } | |
257 | ||
258 | ||
259 | \f | |
0f2d19dd JB |
260 | #ifdef _UNICOS |
261 | typedef int setjmp_type; | |
262 | #else | |
263 | typedef long setjmp_type; | |
264 | #endif | |
265 | ||
816a6f06 JB |
266 | /* All the data needed to invoke the main function. */ |
267 | struct main_func_closure | |
268 | { | |
269 | /* the function to call */ | |
270 | void (*main_func) SCM_P ((void *closure, int argc, char **argv)); | |
271 | void *closure; /* dummy data to pass it */ | |
272 | int argc; | |
273 | char **argv; /* the argument list it should receive */ | |
274 | }; | |
275 | ||
276 | ||
277 | static void scm_boot_guile_1 SCM_P ((SCM_STACKITEM *base, | |
278 | struct main_func_closure *closure)); | |
279 | static SCM invoke_main_func SCM_P ((void *body_data, SCM jmpbuf)); | |
1cdaaafb JB |
280 | |
281 | ||
282 | /* Fire up the Guile Scheme interpreter. | |
283 | ||
284 | Call MAIN_FUNC, passing it CLOSURE, ARGC, and ARGV. MAIN_FUNC | |
285 | should do all the work of the program (initializing other packages, | |
286 | reading user input, etc.) before returning. When MAIN_FUNC | |
287 | returns, call exit (0); this function never returns. If you want | |
288 | some other exit value, MAIN_FUNC may call exit itself. | |
0f2d19dd | 289 | |
1cdaaafb JB |
290 | scm_boot_guile arranges for program-arguments to return the strings |
291 | given by ARGC and ARGV. If MAIN_FUNC modifies ARGC/ARGV, should | |
292 | call scm_set_program_arguments with the final list, so Scheme code | |
293 | will know which arguments have been processed. | |
c275ddc7 | 294 | |
816a6f06 JB |
295 | scm_boot_guile establishes a catch-all catch handler which prints |
296 | an error message and exits the process. This means that Guile | |
297 | exits in a coherent way when system errors occur and the user isn't | |
298 | prepared to handle it. If the user doesn't like this behavior, | |
299 | they can establish their own universal catcher to shadow this one. | |
300 | ||
1cdaaafb JB |
301 | Why must the caller do all the real work from MAIN_FUNC? The |
302 | garbage collector assumes that all local variables of type SCM will | |
303 | be above scm_boot_guile's stack frame on the stack. If you try to | |
304 | manipulate SCM values after this function returns, it's the luck of | |
305 | the draw whether the GC will be able to find the objects you | |
306 | allocate. So, scm_boot_guile function exits, rather than | |
307 | returning, to discourage people from making that mistake. */ | |
308 | ||
309 | ||
310 | void | |
311 | scm_boot_guile (argc, argv, main_func, closure) | |
0f2d19dd JB |
312 | int argc; |
313 | char ** argv; | |
1cdaaafb JB |
314 | void (*main_func) (); |
315 | void *closure; | |
c275ddc7 | 316 | { |
1cdaaafb JB |
317 | /* The garbage collector uses the address of this variable as one |
318 | end of the stack, and the address of one of its own local | |
319 | variables as the other end. */ | |
c275ddc7 | 320 | SCM_STACKITEM dummy; |
816a6f06 | 321 | struct main_func_closure c; |
c275ddc7 | 322 | |
816a6f06 JB |
323 | c.main_func = main_func; |
324 | c.closure = closure; | |
325 | c.argc = argc; | |
326 | c.argv = argv; | |
327 | ||
1595aa56 | 328 | scm_boot_guile_1 (&dummy, &c); |
c275ddc7 JB |
329 | } |
330 | ||
816a6f06 | 331 | |
70122cd3 MV |
332 | /* Record here whether SCM_BOOT_GUILE_1 has already been called. This |
333 | variable is now here and not inside SCM_BOOT_GUILE_1 so that one | |
334 | can tweak it. This is necessary for unexec to work. (Hey, "1-live" | |
335 | is the name of a local radiostation...) */ | |
336 | ||
337 | int scm_boot_guile_1_live = 0; | |
1cdaaafb JB |
338 | |
339 | static void | |
816a6f06 | 340 | scm_boot_guile_1 (base, closure) |
c275ddc7 | 341 | SCM_STACKITEM *base; |
816a6f06 | 342 | struct main_func_closure *closure; |
0f2d19dd JB |
343 | { |
344 | static int initialized = 0; | |
70122cd3 | 345 | /* static int live = 0; */ |
0f2d19dd | 346 | setjmp_type setjmp_val; |
0f2d19dd | 347 | |
1cdaaafb | 348 | /* This function is not re-entrant. */ |
70122cd3 | 349 | if (scm_boot_guile_1_live) |
1cdaaafb | 350 | abort (); |
0f2d19dd | 351 | |
70122cd3 | 352 | scm_boot_guile_1_live = 1; |
0f2d19dd JB |
353 | |
354 | scm_ints_disabled = 1; | |
355 | scm_block_gc = 1; | |
356 | ||
357 | if (initialized) | |
358 | { | |
c275ddc7 | 359 | scm_restart_stack (base); |
0f2d19dd JB |
360 | } |
361 | else | |
362 | { | |
363 | scm_ports_prehistory (); | |
364 | scm_smob_prehistory (); | |
365 | scm_tables_prehistory (); | |
366 | scm_init_storage (0); | |
9ef3d0ee MD |
367 | scm_init_root (); |
368 | #ifdef USE_THREADS | |
a239e35b | 369 | scm_init_threads (base); |
9ef3d0ee | 370 | #endif |
1cdaaafb | 371 | scm_start_stack (base); |
0f2d19dd JB |
372 | scm_init_gsubr (); |
373 | scm_init_feature (); | |
374 | scm_init_alist (); | |
375 | scm_init_append (); | |
376 | scm_init_arbiters (); | |
377 | scm_init_async (); | |
0e44fcca | 378 | scm_init_backtrace (); |
0f2d19dd JB |
379 | scm_init_boolean (); |
380 | scm_init_chars (); | |
381 | scm_init_continuations (); | |
382 | scm_init_dynwind (); | |
383 | scm_init_eq (); | |
384 | scm_init_error (); | |
0f2d19dd | 385 | scm_init_fports (); |
0f2d19dd JB |
386 | scm_init_filesys (); |
387 | scm_init_gc (); | |
68cd9c71 | 388 | scm_init_gdbint (); |
0f2d19dd JB |
389 | scm_init_hash (); |
390 | scm_init_hashtab (); | |
391 | scm_init_ioext (); | |
392 | scm_init_kw (); | |
393 | scm_init_list (); | |
394 | scm_init_mallocs (); | |
370312ae | 395 | scm_init_net_db (); |
0f2d19dd JB |
396 | scm_init_numbers (); |
397 | scm_init_objprop (); | |
4e1caa79 MD |
398 | #if DEBUG_EXTENSIONS |
399 | /* Excluding this until it's really needed makes the binary | |
400 | * smaller after linking. */ | |
401 | scm_init_options (); | |
402 | #endif | |
0f2d19dd JB |
403 | scm_init_pairs (); |
404 | scm_init_ports (); | |
405 | scm_init_posix (); | |
406 | scm_init_procs (); | |
407 | scm_init_procprop (); | |
0f2d19dd JB |
408 | scm_init_scmsigs (); |
409 | scm_init_socket (); | |
4e1caa79 MD |
410 | #ifdef DEBUG_EXTENSIONS |
411 | scm_init_srcprop (); | |
412 | #endif | |
0f2d19dd | 413 | scm_init_stackchk (); |
7439c0b9 | 414 | scm_init_struct (); /* Requires struct */ |
0e44fcca | 415 | scm_init_stacks (); |
0f2d19dd | 416 | scm_init_strports (); |
0f2d19dd JB |
417 | scm_init_symbols (); |
418 | scm_init_tag (); | |
419 | scm_init_load (); | |
90b826c9 | 420 | scm_init_print (); /* Requires struct */ |
0f2d19dd JB |
421 | scm_init_read (); |
422 | scm_init_sequences (); | |
423 | scm_init_stime (); | |
424 | scm_init_strings (); | |
425 | scm_init_strorder (); | |
426 | scm_init_mbstrings (); | |
427 | scm_init_strop (); | |
428 | scm_init_throw (); | |
429 | scm_init_variable (); | |
430 | scm_init_vectors (); | |
9d7e1edf | 431 | scm_init_version (); |
0f2d19dd JB |
432 | scm_init_weaks (); |
433 | scm_init_vports (); | |
434 | scm_init_eval (); | |
0e44fcca MD |
435 | #ifdef DEBUG_EXTENSIONS |
436 | scm_init_debug (); /* Requires macro smobs */ | |
437 | #endif | |
0f2d19dd JB |
438 | scm_init_ramap (); |
439 | scm_init_unif (); | |
440 | scm_init_simpos (); | |
24f93c27 | 441 | scm_init_load_path (); |
1cdaaafb | 442 | scm_init_standard_ports (); |
70122cd3 | 443 | scm_init_dynamic_linking (); |
0487b82f | 444 | scm_init_script (); |
0f2d19dd JB |
445 | initialized = 1; |
446 | } | |
447 | ||
448 | scm_block_gc = 0; /* permit the gc to run */ | |
449 | /* ints still disabled */ | |
450 | ||
1cdaaafb JB |
451 | #ifdef STACK_CHECKING |
452 | scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P; | |
453 | #endif | |
0f2d19dd | 454 | |
1cdaaafb JB |
455 | setjmp_val = setjmp (SCM_JMPBUF (scm_rootcont)); |
456 | if (!setjmp_val) | |
457 | { | |
458 | scm_init_signals (); | |
0f2d19dd | 459 | |
816a6f06 JB |
460 | scm_set_program_arguments (closure->argc, closure->argv, 0); |
461 | scm_internal_catch (SCM_BOOL_T, invoke_main_func, closure, | |
462 | scm_handle_by_message, 0); | |
1cdaaafb | 463 | } |
0f2d19dd | 464 | |
1cdaaafb | 465 | scm_restore_signals (); |
0f2d19dd | 466 | |
1cdaaafb JB |
467 | /* This tick gives any pending |
468 | * asyncs a chance to run. This must be done after | |
469 | * the call to scm_restore_signals. | |
470 | */ | |
471 | SCM_ASYNC_TICK; | |
472 | ||
473 | /* If the caller doesn't want this, they should return from | |
474 | main_func themselves. */ | |
475 | exit (0); | |
0f2d19dd | 476 | } |
816a6f06 JB |
477 | |
478 | ||
479 | static SCM | |
480 | invoke_main_func (body_data, jmpbuf) | |
481 | void *body_data; | |
482 | SCM jmpbuf; | |
483 | { | |
484 | struct main_func_closure *closure = (struct main_func_closure *) body_data; | |
485 | ||
486 | (*closure->main_func) (closure->closure, closure->argc, closure->argv); | |
487 | ||
488 | /* never reached */ | |
489 | return SCM_UNDEFINED; | |
490 | } |