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 "SBCL is a Common Lisp programming environment. Ordinarily you shouldn't\n\
145 need command line options when you invoke it interactively: you can just\n\
146 start it and work with the customary Lisp READ-EVAL-PRINT loop.\n\
148 One option idiom which is sometimes useful interactively (e.g. when\n\
149 exercising a test case for a bug report) is\n\
150 sbcl --no-sysinit --no-userinit\n\
151 to keep SBCL from reading any initialization files at startup. And some\n\
152 people like to suppress the default startup message:\n\
155 Other options can be useful when you're running SBCL noninteractively,\n\
156 e.g. from a script, or if you have a strange system configuration, so\n\
157 that SBCL can't by default find one of the files it needs. For\n\
158 information on such options, see the sbcl(1) man page.\n\
160 More information on SBCL can be found on its man page, or at\n\
161 <http://sbcl.sf.net/>.\n");
167 printf("SBCL %s\n", SBCL_VERSION_STRING);
174 "This is SBCL %s, an implementation of ANSI Common Lisp.\n\
175 More information about SBCL is available at <http://www.sbcl.org/>.\n\
177 SBCL is free software, provided as is, with absolutely no warranty.\n\
178 It is mostly in the public domain; some portions are provided under\n\
179 BSD-style licenses. See the CREDITS and COPYING files in the\n\
180 distribution for more information.\n\
181 ", SBCL_VERSION_STRING);
184 /* Look for a core file to load, first in the directory named by the
185 * SBCL_HOME environment variable, then in a hardcoded default
186 * location. Returns a malloced copy of the core filename. */
190 char *sbcl_home = getenv("SBCL_HOME");
192 char *stem = "/sbcl.core";
195 if(!sbcl_home) sbcl_home = SBCL_HOME;
196 lookhere = (char *) calloc(strlen(sbcl_home) +
200 sprintf(lookhere, "%s%s", sbcl_home, stem);
201 core = copied_existing_filename_or_null(lookhere);
204 lose("can't find core file\n");
212 main(int argc, char *argv[], char *envp[])
214 #ifdef LISP_FEATURE_WIN32
215 /* Exception handling support structure. Evil Win32 hack. */
216 struct lisp_exception_frame exception_frame;
219 /* the name of the core file we're to execute. Note that this is
220 * a malloc'ed string which should be freed eventually. */
222 char **sbcl_argv = 0;
223 os_vm_offset_t embedded_core_offset = 0;
225 /* other command line options */
226 boolean noinform = 0;
227 boolean end_runtime_options = 0;
229 lispobj initial_function;
232 block_blockable_signals();
234 setlocale(LC_ALL, "");
236 /* KLUDGE: os_vm_page_size is set by os_init(), and on some
237 * systems (e.g. Alpha) arch_init() needs need os_vm_page_size, so
238 * it must follow os_init(). -- WHN 2000-01-26 */
244 /* Parse our part of the command line (aka "runtime options"),
245 * stripping out those options that we handle. */
248 while (argi < argc) {
249 char *arg = argv[argi];
250 if (0 == strcmp(arg, "--noinform")) {
253 } else if (0 == strcmp(arg, "--core")) {
255 lose("more than one core file specified\n");
259 lose("missing filename for --core argument\n");
261 core = copied_string(argv[argi]);
264 } else if (0 == strcmp(arg, "--help")) {
265 /* I think this is the (or a) usual convention: upon
266 * seeing "--help" we immediately print our help
267 * string and exit, ignoring everything else. */
270 } else if (0 == strcmp(arg, "--version")) {
271 /* As in "--help" case, I think this is expected. */
274 } else if (0 == strcmp(arg, "--debug-environment")) {
276 printf("; Commandline arguments:\n");
278 printf("; %2d: \"%s\"\n", n, argv[n]);
282 printf(";\n; Environment:\n");
284 printf("; %2d: \"%s\"\n", n, ENVIRON[n]);
288 } else if (0 == strcmp(arg, "--end-runtime-options")) {
289 end_runtime_options = 1;
293 /* This option was unrecognized as a runtime option,
294 * so it must be a toplevel option or a user option,
295 * so we must be past the end of the runtime option
300 /* This is where we strip out those options that we handle. We
301 * also take this opportunity to make sure that we don't find
302 * an out-of-place "--end-runtime-options" option. */
304 char *argi0 = argv[argi];
306 /* (argc - argi) for the arguments, one for the binary,
307 and one for the terminating NULL. */
308 sbcl_argv = successful_malloc((2 + argc - argi) * sizeof(char *));
309 sbcl_argv[0] = argv[0];
310 while (argi < argc) {
311 char *arg = argv[argi++];
312 /* If we encounter --end-runtime-options for the first
313 * time after the point where we had to give up on
314 * runtime options, then the point where we had to
315 * give up on runtime options must've been a user
317 if (!end_runtime_options &&
318 0 == strcmp(arg, "--end-runtime-options")) {
319 lose("bad runtime option \"%s\"\n", argi0);
321 sbcl_argv[argj++] = arg;
327 /* If no core file was specified, look for one. */
329 char *runtime_path = os_get_runtime_executable_path();
332 os_vm_offset_t offset = search_for_embedded_core(runtime_path);
335 embedded_core_offset = offset;
339 core = search_for_core();
342 core = search_for_core();
346 /* Make sure that SBCL_HOME is set, unless loading an embedded core. */
347 if (!getenv("SBCL_HOME") && embedded_core_offset == 0) {
348 char *envstring, *copied_core, *dir;
349 char *stem = "SBCL_HOME=";
350 copied_core = copied_string(core);
351 dir = dirname(copied_core);
352 envstring = (char *) calloc(strlen(stem) +
356 sprintf(envstring, "%s%s", stem, dir);
366 #if defined(SVR4) || defined(__linux__)
370 define_var("nil", NIL, 1);
371 define_var("t", T, 1);
373 enable_lossage_handler();
377 initial_function = load_core_file(core, embedded_core_offset);
378 if (initial_function == NIL) {
379 lose("couldn't find initial function\n");
382 gc_initialize_pointers();
384 arch_install_interrupt_handlers();
385 #ifndef LISP_FEATURE_WIN32
386 os_install_interrupt_handlers();
388 /* wos_install_interrupt_handlers(handler); */
389 wos_install_interrupt_handlers(&exception_frame);
392 /* Pass core filename into Lisp */
393 SetSymbolValue(CORE_STRING, alloc_base_string(core),0);
394 SHOW("freeing core");
397 /* Convert remaining argv values to something that Lisp can grok. */
398 SHOW("setting POSIX-ARGV symbol value");
399 SetSymbolValue(POSIX_ARGV, alloc_base_string_list(sbcl_argv),0);
402 FSHOW((stderr, "/funcalling initial_function=0x%lx\n",
403 (unsigned long)initial_function));
404 #ifdef LISP_FEATURE_WIN32
406 This is experimental prerelease support for the Windows platform: use\n\
407 at your own risk. \"Your Kitten of Death awaits!\"\n");
411 create_initial_thread(initial_function);
412 lose("CATS. CATS ARE NICE.\n");