2 * main() entry point for a stand-alone SBCL image
6 * This software is part of the SBCL system. See the README file for
9 * This software is derived from the CMU CL system, which was
10 * written at Carnegie Mellon University and released into the
11 * public domain. The software is in the public domain and is
12 * provided with absolutely no warranty. See the COPYING and CREDITS
13 * files for more information.
20 #ifndef LISP_FEATURE_WIN32
23 #include <sys/types.h>
24 #ifndef LISP_FEATURE_WIN32
30 #include <sys/param.h>
33 #ifndef LISP_FEATURE_WIN32
39 #if defined(SVR4) || defined(__linux__)
51 #include "interrupt.h"
60 #include "genesis/static-symbols.h"
61 #include "genesis/symbol.h"
70 #define SBCL_HOME "/usr/local/lib/sbcl/"
73 #ifdef LISP_FEATURE_HPUX
74 extern void *return_from_lisp_stub;
75 #include "genesis/closure.h"
76 #include "genesis/simple-fun.h"
80 /* SIGINT handler that invokes the monitor (for when Lisp isn't up to it) */
82 sigint_handler(int signal, siginfo_t *info, os_context_t *context)
84 lose("\nSIGINT hit at 0x%08lX\n",
85 (unsigned long) *os_context_pc_addr(context));
88 /* (This is not static, because we want to be able to call it from
93 SHOW("entering sigint_init()");
94 install_handler(SIGINT, sigint_handler);
95 SHOW("leaving sigint_init()");
99 * helper functions for dealing with command line args
103 successful_malloc(size_t size)
105 void* result = malloc(size);
107 lose("malloc failure\n");
111 return (void *) NULL; /* dummy value: return something ... */
115 copied_string(char *string)
117 return strcpy(successful_malloc(1+strlen(string)), string);
121 copied_existing_filename_or_null(char *filename)
123 struct stat filename_stat;
124 if (stat(filename, &filename_stat)) { /* if failure */
127 return copied_string(filename);
131 #ifndef LISP_FEATURE_WIN32
133 copied_realpath(const char *pathname)
138 /* realpath() supposedly can't be counted on to always return
139 * an absolute path, so we prepend the cwd to relative paths */
141 if (pathname[0] != '/') {
142 messy = successful_malloc(PATH_MAX + 1);
143 if (getcwd(messy, PATH_MAX + 1) == NULL) {
148 snprintf(messy + len, PATH_MAX + 1 - len, "/%s", pathname);
151 tidy = successful_malloc(PATH_MAX + 1);
152 if (realpath((messy ? messy : pathname), tidy) == NULL) {
160 #endif /* LISP_FEATURE_WIN32 */
162 /* miscellaneous chattiness */
168 "Usage: sbcl [runtime-options] [toplevel-options] [user-options]\n\
169 Common runtime options:\n\
170 --help Print this message and exit.\n\
171 --version Print version information and exit.\n\
172 --core <filename> Use the specified core file instead of the default.\n\
173 --dynamic-space-size <MiB> Size of reserved dynamic space in megabytes.\n\
174 --control-stack-size <MiB> Size of reserved control stack in megabytes.\n\
176 Common toplevel options:\n\
177 --sysinit <filename> System-wide init-file to use instead of default.\n\
178 --userinit <filename> Per-user init-file to use instead of default.\n\
179 --no-sysinit Inhibit processing of any system-wide init-file.\n\
180 --no-userinit Inhibit processing of any per-user init-file.\n\
182 User options are not processed by SBCL. All runtime options must\n\
183 appear before toplevel options, and all toplevel options must\n\
184 appear before user options.\n\
186 For more information please refer to the SBCL User Manual, which\n\
187 should be installed along with SBCL, and is also available from the\n\
188 website <http://www.sbcl.org/>.\n");
194 printf("SBCL %s\n", SBCL_VERSION_STRING);
201 "This is SBCL %s, an implementation of ANSI Common Lisp.\n\
202 More information about SBCL is available at <http://www.sbcl.org/>.\n\
204 SBCL is free software, provided as is, with absolutely no warranty.\n\
205 It is mostly in the public domain; some portions are provided under\n\
206 BSD-style licenses. See the CREDITS and COPYING files in the\n\
207 distribution for more information.\n\
208 ", SBCL_VERSION_STRING);
211 /* Look for a core file to load, first in the directory named by the
212 * SBCL_HOME environment variable, then in a hardcoded default
213 * location. Returns a malloced copy of the core filename. */
217 char *sbcl_home = getenv("SBCL_HOME");
219 char *stem = "/sbcl.core";
222 if (!(sbcl_home && *sbcl_home)) sbcl_home = SBCL_HOME;
223 lookhere = (char *) calloc(strlen(sbcl_home) +
227 sprintf(lookhere, "%s%s", sbcl_home, stem);
228 core = copied_existing_filename_or_null(lookhere);
231 lose("can't find core file at %s\n", lookhere);
239 /* Try to find the path to an executable from argv[0], this is only
240 * used when os_get_runtime_executable_path() returns NULL */
241 #ifdef LISP_FEATURE_WIN32
243 search_for_executable(const char *argv0)
247 #else /* LISP_FEATURE_WIN32 */
249 search_for_executable(const char *argv0)
251 char *search, *start, *end, *buf;
253 /* If argv[0] contains a slash then it's probably an absolute path
254 * or relative to the current directory, so check if it exists. */
255 if (strchr(argv0, '/') != NULL && access(argv0, F_OK) == 0)
256 return copied_realpath(argv0);
258 /* Bail on an absolute path which doesn't exist */
262 /* Otherwise check if argv[0] exists relative to any directory in PATH */
263 search = getenv("PATH");
266 search = copied_string(search);
267 buf = successful_malloc(PATH_MAX + 1);
268 for (start = search; (end = strchr(start, ':')) != NULL; start = end + 1) {
270 snprintf(buf, PATH_MAX + 1, "%s/%s", start, argv0);
271 if (access(buf, F_OK) == 0) {
273 search = copied_realpath(buf);
283 #endif /* LISP_FEATURE_WIN32 */
288 struct runtime_options *runtime_options;
290 char *saved_runtime_path = NULL;
293 main(int argc, char *argv[], char *envp[])
295 #ifdef LISP_FEATURE_WIN32
296 /* Exception handling support structure. Evil Win32 hack. */
297 struct lisp_exception_frame exception_frame;
300 /* the name of the core file we're to execute. Note that this is
301 * a malloc'ed string which should be freed eventually. */
303 char **sbcl_argv = 0;
304 os_vm_offset_t embedded_core_offset = 0;
305 char *runtime_path = 0;
307 /* other command line options */
308 boolean noinform = 0;
309 boolean end_runtime_options = 0;
310 boolean disable_lossage_handler_p = 0;
312 lispobj initial_function;
313 const char *sbcl_home = getenv("SBCL_HOME");
316 block_blockable_signals(0, 0);
318 setlocale(LC_ALL, "");
320 runtime_options = NULL;
322 /* Save the argv[0] derived runtime path in case
323 * os_get_runtime_executable_path(1) isn't able to get an
324 * externally-usable path later on. */
325 saved_runtime_path = search_for_executable(argv[0]);
327 /* Check early to see if this executable has an embedded core,
328 * which also populates runtime_options if the core has runtime
330 runtime_path = os_get_runtime_executable_path(0);
331 if (runtime_path || saved_runtime_path) {
332 os_vm_offset_t offset = search_for_embedded_core(
333 runtime_path ? runtime_path : saved_runtime_path);
335 embedded_core_offset = offset;
336 core = (runtime_path ? runtime_path :
337 copied_string(saved_runtime_path));
344 /* Parse our part of the command line (aka "runtime options"),
345 * stripping out those options that we handle. */
346 if (runtime_options != NULL) {
347 dynamic_space_size = runtime_options->dynamic_space_size;
348 thread_control_stack_size = runtime_options->thread_control_stack_size;
353 runtime_options = successful_malloc(sizeof(struct runtime_options));
355 while (argi < argc) {
356 char *arg = argv[argi];
357 if (0 == strcmp(arg, "--script")) {
358 /* This is both a runtime and a toplevel option. As a
359 * runtime option, it is equivalent to --noinform.
360 * This exits, and does not increment argi, so that
361 * TOPLEVEL-INIT sees the option. */
363 end_runtime_options = 1;
364 disable_lossage_handler_p = 1;
365 lose_on_corruption_p = 1;
367 } else if (0 == strcmp(arg, "--noinform")) {
370 } else if (0 == strcmp(arg, "--core")) {
372 lose("more than one core file specified\n");
376 lose("missing filename for --core argument\n");
378 core = copied_string(argv[argi]);
381 } else if (0 == strcmp(arg, "--help")) {
382 /* I think this is the (or a) usual convention: upon
383 * seeing "--help" we immediately print our help
384 * string and exit, ignoring everything else. */
387 } else if (0 == strcmp(arg, "--version")) {
388 /* As in "--help" case, I think this is expected. */
391 } else if (0 == strcmp(arg, "--dynamic-space-size")) {
394 lose("missing argument for --dynamic-space-size");
396 dynamic_space_size = strtol(argv[argi++], 0, 0) << 20;
398 lose("argument to --dynamic-space-size is not a number");
399 # ifdef MAX_DYNAMIC_SPACE_END
400 if (!((DYNAMIC_SPACE_START <
401 DYNAMIC_SPACE_START+dynamic_space_size) &&
402 (DYNAMIC_SPACE_START+dynamic_space_size <=
403 MAX_DYNAMIC_SPACE_END)))
404 lose("specified --dynamic-space-size too large");
406 } else if (0 == strcmp(arg, "--control-stack-size")) {
409 lose("missing argument for --control-stack-size");
411 thread_control_stack_size = strtol(argv[argi++], 0, 0) << 20;
413 lose("argument to --control-stack-size is not a number");
414 } else if (0 == strcmp(arg, "--debug-environment")) {
416 printf("; Commandline arguments:\n");
418 printf("; %2d: \"%s\"\n", n, argv[n]);
422 printf(";\n; Environment:\n");
424 printf("; %2d: \"%s\"\n", n, ENVIRON[n]);
428 } else if (0 == strcmp(arg, "--disable-ldb")) {
429 disable_lossage_handler_p = 1;
431 } else if (0 == strcmp(arg, "--lose-on-corruption")) {
432 lose_on_corruption_p = 1;
434 } else if (0 == strcmp(arg, "--end-runtime-options")) {
435 end_runtime_options = 1;
439 /* This option was unrecognized as a runtime option,
440 * so it must be a toplevel option or a user option,
441 * so we must be past the end of the runtime option
446 /* This is where we strip out those options that we handle. We
447 * also take this opportunity to make sure that we don't find
448 * an out-of-place "--end-runtime-options" option. */
450 char *argi0 = argv[argi];
452 /* (argc - argi) for the arguments, one for the binary,
453 and one for the terminating NULL. */
454 sbcl_argv = successful_malloc((2 + argc - argi) * sizeof(char *));
455 sbcl_argv[0] = argv[0];
456 while (argi < argc) {
457 char *arg = argv[argi++];
458 /* If we encounter --end-runtime-options for the first
459 * time after the point where we had to give up on
460 * runtime options, then the point where we had to
461 * give up on runtime options must've been a user
463 if (!end_runtime_options &&
464 0 == strcmp(arg, "--end-runtime-options")) {
465 lose("bad runtime option \"%s\"\n", argi0);
467 sbcl_argv[argj++] = arg;
473 /* Align down to multiple of page_table page size, and to the appropriate
474 * stack alignment. */
475 dynamic_space_size &= ~(PAGE_BYTES-1);
476 thread_control_stack_size &= ~(CONTROL_STACK_ALIGNMENT_BYTES-1);
478 /* Preserve the runtime options for possible future core saving */
479 runtime_options->dynamic_space_size = dynamic_space_size;
480 runtime_options->thread_control_stack_size = thread_control_stack_size;
482 /* KLUDGE: os_vm_page_size is set by os_init(), and on some
483 * systems (e.g. Alpha) arch_init() needs need os_vm_page_size, so
484 * it must follow os_init(). -- WHN 2000-01-26 */
490 /* If no core file was specified, look for one. */
492 core = search_for_core();
495 /* Make sure that SBCL_HOME is set and not the empty string,
496 unless loading an embedded core. */
497 if (!(sbcl_home && *sbcl_home) && embedded_core_offset == 0) {
498 char *envstring, *copied_core, *dir;
499 char *stem = "SBCL_HOME=";
500 copied_core = copied_string(core);
501 dir = dirname(copied_core);
502 envstring = (char *) calloc(strlen(stem) +
506 sprintf(envstring, "%s%s", stem, dir);
511 if (!noinform && embedded_core_offset == 0) {
516 #if defined(SVR4) || defined(__linux__) || defined(__NetBSD__)
520 define_var("nil", NIL, 1);
521 define_var("t", T, 1);
523 if (!disable_lossage_handler_p)
524 enable_lossage_handler();
528 initial_function = load_core_file(core, embedded_core_offset);
529 if (initial_function == NIL) {
530 lose("couldn't find initial function\n");
532 #ifdef LISP_FEATURE_HPUX
533 /* -1 = CLOSURE_FUN_OFFSET, 23 = SIMPLE_FUN_CODE_OFFSET, we are
534 * not in LANGUAGE_ASSEMBLY so we cant reach them. */
535 return_from_lisp_stub = (void *) ((char *)*((unsigned long *)
536 ((char *)initial_function + -1)) + 23);
539 gc_initialize_pointers();
541 arch_install_interrupt_handlers();
542 #ifndef LISP_FEATURE_WIN32
543 os_install_interrupt_handlers();
545 /* wos_install_interrupt_handlers(handler); */
546 wos_install_interrupt_handlers(&exception_frame);
549 /* Pass core filename and the processed argv into Lisp. They'll
550 * need to be processed further there, to do locale conversion.
553 posix_argv = sbcl_argv;
555 FSHOW((stderr, "/funcalling initial_function=0x%lx\n",
556 (unsigned long)initial_function));
557 #ifdef LISP_FEATURE_WIN32
559 This is experimental prerelease support for the Windows platform: use\n\
560 at your own risk. \"Your Kitten of Death awaits!\"\n");
564 create_initial_thread(initial_function);
565 lose("CATS. CATS ARE NICE.\n");