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__)
50 #include "interrupt.h"
60 #include "genesis/static-symbols.h"
61 #include "genesis/symbol.h"
70 #define SBCL_HOME "/usr/local/lib/sbcl/"
74 /* SIGINT handler that invokes the monitor (for when Lisp isn't up to it) */
76 sigint_handler(int signal, siginfo_t *info, void *void_context)
78 lose("\nSIGINT hit at 0x%08lX\n",
79 (unsigned long) *os_context_pc_addr(void_context));
82 /* (This is not static, because we want to be able to call it from
87 SHOW("entering sigint_init()");
88 install_handler(SIGINT, sigint_handler);
89 SHOW("leaving sigint_init()");
93 * helper functions for dealing with command line args
97 successful_malloc(size_t size)
99 void* result = malloc(size);
101 lose("malloc failure\n");
105 return (void *) NULL; /* dummy value: return something ... */
109 copied_string(char *string)
111 return strcpy(successful_malloc(1+strlen(string)), string);
115 copied_existing_filename_or_null(char *filename)
117 struct stat filename_stat;
118 if (stat(filename, &filename_stat)) { /* if failure */
121 return copied_string(filename);
125 /* Convert a null-terminated array of null-terminated strings (e.g.
126 * argv or envp) into a Lisp list of Lisp base-strings. */
128 alloc_base_string_list(char *array_ptr[])
131 return alloc_cons(alloc_base_string(*array_ptr),
132 alloc_base_string_list(1 + array_ptr));
138 /* miscellaneous chattiness */
144 "Usage: sbcl [runtime-options] [toplevel-options] [user-options]\n\
145 Common runtime options:\n\
146 --help Print this message and exit.\n\
147 --version Print version information and exit.\n\
148 --core <filename> Use the specified core file instead of the default.\n\
149 --dynamic-space-size <MiB> Size of reserved dynamic space in megabytes.\n\
151 Common toplevel options:\n\
152 --sysinit <filename> System-wide init-file to use instead of default.\n\
153 --userinit <filename> Per-user init-file to use instead of default.\n\
154 --no-sysinit Inhibit processing of any system-wide init-file.\n\
155 --no-userinit Inhibit processing of any per-user init-file.\n\
157 User options are not processed by SBCL. All runtime options must\n\
158 appear before toplevel options, and all toplevel options must\n\
159 appear before user options.\n\
161 For more information please refer to the SBCL User Manual, which\n\
162 should be installed along with SBCL, and is also available from the\n\
163 website <http://www.sbcl.org/>.\n");
169 printf("SBCL %s\n", SBCL_VERSION_STRING);
176 "This is SBCL %s, an implementation of ANSI Common Lisp.\n\
177 More information about SBCL is available at <http://www.sbcl.org/>.\n\
179 SBCL is free software, provided as is, with absolutely no warranty.\n\
180 It is mostly in the public domain; some portions are provided under\n\
181 BSD-style licenses. See the CREDITS and COPYING files in the\n\
182 distribution for more information.\n\
183 ", SBCL_VERSION_STRING);
186 /* Look for a core file to load, first in the directory named by the
187 * SBCL_HOME environment variable, then in a hardcoded default
188 * location. Returns a malloced copy of the core filename. */
192 char *sbcl_home = getenv("SBCL_HOME");
194 char *stem = "/sbcl.core";
197 if(!sbcl_home) sbcl_home = SBCL_HOME;
198 lookhere = (char *) calloc(strlen(sbcl_home) +
202 sprintf(lookhere, "%s%s", sbcl_home, stem);
203 core = copied_existing_filename_or_null(lookhere);
206 lose("can't find core file at %s\n", lookhere);
216 main(int argc, char *argv[], char *envp[])
218 #ifdef LISP_FEATURE_WIN32
219 /* Exception handling support structure. Evil Win32 hack. */
220 struct lisp_exception_frame exception_frame;
223 /* the name of the core file we're to execute. Note that this is
224 * a malloc'ed string which should be freed eventually. */
226 char **sbcl_argv = 0;
227 os_vm_offset_t embedded_core_offset = 0;
229 /* other command line options */
230 boolean noinform = 0;
231 boolean end_runtime_options = 0;
233 lispobj initial_function;
236 block_blockable_signals();
238 setlocale(LC_ALL, "");
240 /* Parse our part of the command line (aka "runtime options"),
241 * stripping out those options that we handle. */
244 while (argi < argc) {
245 char *arg = argv[argi];
246 if (0 == strcmp(arg, "--noinform")) {
249 } else if (0 == strcmp(arg, "--core")) {
251 lose("more than one core file specified\n");
255 lose("missing filename for --core argument\n");
257 core = copied_string(argv[argi]);
260 } else if (0 == strcmp(arg, "--help")) {
261 /* I think this is the (or a) usual convention: upon
262 * seeing "--help" we immediately print our help
263 * string and exit, ignoring everything else. */
266 } else if (0 == strcmp(arg, "--version")) {
267 /* As in "--help" case, I think this is expected. */
270 } else if (0 == strcmp(arg, "--dynamic-space-size")) {
273 lose("missing argument for --dynamic-space-size");
275 dynamic_space_size = strtol(argv[argi++], 0, 0) << 20;
277 lose("argument to --dynamic-space-size is not a number");
278 } else if (0 == strcmp(arg, "--debug-environment")) {
280 printf("; Commandline arguments:\n");
282 printf("; %2d: \"%s\"\n", n, argv[n]);
286 printf(";\n; Environment:\n");
288 printf("; %2d: \"%s\"\n", n, ENVIRON[n]);
292 } else if (0 == strcmp(arg, "--end-runtime-options")) {
293 end_runtime_options = 1;
297 /* This option was unrecognized as a runtime option,
298 * so it must be a toplevel option or a user option,
299 * so we must be past the end of the runtime option
304 /* This is where we strip out those options that we handle. We
305 * also take this opportunity to make sure that we don't find
306 * an out-of-place "--end-runtime-options" option. */
308 char *argi0 = argv[argi];
310 /* (argc - argi) for the arguments, one for the binary,
311 and one for the terminating NULL. */
312 sbcl_argv = successful_malloc((2 + argc - argi) * sizeof(char *));
313 sbcl_argv[0] = argv[0];
314 while (argi < argc) {
315 char *arg = argv[argi++];
316 /* If we encounter --end-runtime-options for the first
317 * time after the point where we had to give up on
318 * runtime options, then the point where we had to
319 * give up on runtime options must've been a user
321 if (!end_runtime_options &&
322 0 == strcmp(arg, "--end-runtime-options")) {
323 lose("bad runtime option \"%s\"\n", argi0);
325 sbcl_argv[argj++] = arg;
331 /* Align down to multiple of page_table page size */
332 dynamic_space_size = (dynamic_space_size/PAGE_BYTES) * PAGE_BYTES;
334 /* KLUDGE: os_vm_page_size is set by os_init(), and on some
335 * systems (e.g. Alpha) arch_init() needs need os_vm_page_size, so
336 * it must follow os_init(). -- WHN 2000-01-26 */
342 /* If no core file was specified, look for one. */
344 char *runtime_path = os_get_runtime_executable_path();
347 os_vm_offset_t offset = search_for_embedded_core(runtime_path);
350 embedded_core_offset = offset;
354 core = search_for_core();
357 core = search_for_core();
361 /* Make sure that SBCL_HOME is set, unless loading an embedded core. */
362 if (!getenv("SBCL_HOME") && embedded_core_offset == 0) {
363 char *envstring, *copied_core, *dir;
364 char *stem = "SBCL_HOME=";
365 copied_core = copied_string(core);
366 dir = dirname(copied_core);
367 envstring = (char *) calloc(strlen(stem) +
371 sprintf(envstring, "%s%s", stem, dir);
381 #if defined(SVR4) || defined(__linux__)
385 define_var("nil", NIL, 1);
386 define_var("t", T, 1);
388 enable_lossage_handler();
392 initial_function = load_core_file(core, embedded_core_offset);
393 if (initial_function == NIL) {
394 lose("couldn't find initial function\n");
397 gc_initialize_pointers();
399 arch_install_interrupt_handlers();
400 #ifndef LISP_FEATURE_WIN32
401 os_install_interrupt_handlers();
403 /* wos_install_interrupt_handlers(handler); */
404 wos_install_interrupt_handlers(&exception_frame);
407 /* Pass core filename into Lisp */
408 SetSymbolValue(CORE_STRING, alloc_base_string(core),0);
409 SHOW("freeing core");
412 /* Convert remaining argv values to something that Lisp can grok. */
413 SHOW("setting POSIX-ARGV symbol value");
414 SetSymbolValue(POSIX_ARGV, alloc_base_string_list(sbcl_argv),0);
417 FSHOW((stderr, "/funcalling initial_function=0x%lx\n",
418 (unsigned long)initial_function));
419 #ifdef LISP_FEATURE_WIN32
421 This is experimental prerelease support for the Windows platform: use\n\
422 at your own risk. \"Your Kitten of Death awaits!\"\n");
426 create_initial_thread(initial_function);
427 lose("CATS. CATS ARE NICE.\n");