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 at %s\n", lookhere);
214 main(int argc, char *argv[], char *envp[])
216 #ifdef LISP_FEATURE_WIN32
217 /* Exception handling support structure. Evil Win32 hack. */
218 struct lisp_exception_frame exception_frame;
221 /* the name of the core file we're to execute. Note that this is
222 * a malloc'ed string which should be freed eventually. */
224 char **sbcl_argv = 0;
225 os_vm_offset_t embedded_core_offset = 0;
227 /* other command line options */
228 boolean noinform = 0;
229 boolean end_runtime_options = 0;
231 lispobj initial_function;
234 block_blockable_signals();
236 setlocale(LC_ALL, "");
238 /* KLUDGE: os_vm_page_size is set by os_init(), and on some
239 * systems (e.g. Alpha) arch_init() needs need os_vm_page_size, so
240 * it must follow os_init(). -- WHN 2000-01-26 */
246 /* Parse our part of the command line (aka "runtime options"),
247 * stripping out those options that we handle. */
250 while (argi < argc) {
251 char *arg = argv[argi];
252 if (0 == strcmp(arg, "--noinform")) {
255 } else if (0 == strcmp(arg, "--core")) {
257 lose("more than one core file specified\n");
261 lose("missing filename for --core argument\n");
263 core = copied_string(argv[argi]);
266 } else if (0 == strcmp(arg, "--help")) {
267 /* I think this is the (or a) usual convention: upon
268 * seeing "--help" we immediately print our help
269 * string and exit, ignoring everything else. */
272 } else if (0 == strcmp(arg, "--version")) {
273 /* As in "--help" case, I think this is expected. */
276 } else if (0 == strcmp(arg, "--debug-environment")) {
278 printf("; Commandline arguments:\n");
280 printf("; %2d: \"%s\"\n", n, argv[n]);
284 printf(";\n; Environment:\n");
286 printf("; %2d: \"%s\"\n", n, ENVIRON[n]);
290 } else if (0 == strcmp(arg, "--end-runtime-options")) {
291 end_runtime_options = 1;
295 /* This option was unrecognized as a runtime option,
296 * so it must be a toplevel option or a user option,
297 * so we must be past the end of the runtime option
302 /* This is where we strip out those options that we handle. We
303 * also take this opportunity to make sure that we don't find
304 * an out-of-place "--end-runtime-options" option. */
306 char *argi0 = argv[argi];
308 /* (argc - argi) for the arguments, one for the binary,
309 and one for the terminating NULL. */
310 sbcl_argv = successful_malloc((2 + argc - argi) * sizeof(char *));
311 sbcl_argv[0] = argv[0];
312 while (argi < argc) {
313 char *arg = argv[argi++];
314 /* If we encounter --end-runtime-options for the first
315 * time after the point where we had to give up on
316 * runtime options, then the point where we had to
317 * give up on runtime options must've been a user
319 if (!end_runtime_options &&
320 0 == strcmp(arg, "--end-runtime-options")) {
321 lose("bad runtime option \"%s\"\n", argi0);
323 sbcl_argv[argj++] = arg;
329 /* If no core file was specified, look for one. */
331 char *runtime_path = os_get_runtime_executable_path();
334 os_vm_offset_t offset = search_for_embedded_core(runtime_path);
337 embedded_core_offset = offset;
341 core = search_for_core();
344 core = search_for_core();
348 /* Make sure that SBCL_HOME is set, unless loading an embedded core. */
349 if (!getenv("SBCL_HOME") && embedded_core_offset == 0) {
350 char *envstring, *copied_core, *dir;
351 char *stem = "SBCL_HOME=";
352 copied_core = copied_string(core);
353 dir = dirname(copied_core);
354 envstring = (char *) calloc(strlen(stem) +
358 sprintf(envstring, "%s%s", stem, dir);
368 #if defined(SVR4) || defined(__linux__)
372 define_var("nil", NIL, 1);
373 define_var("t", T, 1);
375 enable_lossage_handler();
379 initial_function = load_core_file(core, embedded_core_offset);
380 if (initial_function == NIL) {
381 lose("couldn't find initial function\n");
384 gc_initialize_pointers();
386 arch_install_interrupt_handlers();
387 #ifndef LISP_FEATURE_WIN32
388 os_install_interrupt_handlers();
390 /* wos_install_interrupt_handlers(handler); */
391 wos_install_interrupt_handlers(&exception_frame);
394 /* Pass core filename into Lisp */
395 SetSymbolValue(CORE_STRING, alloc_base_string(core),0);
396 SHOW("freeing core");
399 /* Convert remaining argv values to something that Lisp can grok. */
400 SHOW("setting POSIX-ARGV symbol value");
401 SetSymbolValue(POSIX_ARGV, alloc_base_string_list(sbcl_argv),0);
404 FSHOW((stderr, "/funcalling initial_function=0x%lx\n",
405 (unsigned long)initial_function));
406 #ifdef LISP_FEATURE_WIN32
408 This is experimental prerelease support for the Windows platform: use\n\
409 at your own risk. \"Your Kitten of Death awaits!\"\n");
413 create_initial_thread(initial_function);
414 lose("CATS. CATS ARE NICE.\n");