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.
21 #include <sys/types.h>
26 #include <sys/param.h>
33 #if defined(SVR4) || defined(__linux__)
44 #include "interrupt.h"
55 #include "genesis/static-symbols.h"
56 #include "genesis/symbol.h"
65 #define SBCL_HOME "/usr/local/lib/sbcl/"
69 /* SIGINT handler that invokes the monitor (for when Lisp isn't up to it) */
71 sigint_handler(int signal, siginfo_t *info, void *void_context)
73 lose("\nSIGINT hit at 0x%08lX\n",
74 (unsigned long) *os_context_pc_addr(void_context));
77 /* (This is not static, because we want to be able to call it from
82 SHOW("entering sigint_init()");
83 install_handler(SIGINT, sigint_handler);
84 SHOW("leaving sigint_init()");
88 * helper functions for dealing with command line args
92 successful_malloc(size_t size)
94 void* result = malloc(size);
96 lose("malloc failure");
100 return (void *) NULL; /* dummy value: return something ... */
104 copied_string(char *string)
106 return strcpy(successful_malloc(1+strlen(string)), string);
110 copied_existing_filename_or_null(char *filename)
112 struct stat filename_stat;
113 if (stat(filename, &filename_stat)) { /* if failure */
116 return copied_string(filename);
120 /* Convert a null-terminated array of null-terminated strings (e.g.
121 * argv or envp) into a Lisp list of Lisp base-strings. */
123 alloc_base_string_list(char *array_ptr[])
126 return alloc_cons(alloc_base_string(*array_ptr),
127 alloc_base_string_list(1 + array_ptr));
133 /* miscellaneous chattiness */
139 "SBCL is a Common Lisp programming environment. Ordinarily you shouldn't\n\
140 need command line options when you invoke it interactively: you can just\n\
141 start it and work with the customary Lisp READ-EVAL-PRINT loop.\n\
143 One option idiom which is sometimes useful interactively (e.g. when\n\
144 exercising a test case for a bug report) is\n\
145 sbcl --sysinit /dev/null --userinit /dev/null\n\
146 to keep SBCL from reading any initialization files at startup. And some\n\
147 people like to suppress the default startup message:\n\
150 Other options can be useful when you're running SBCL noninteractively,\n\
151 e.g. from a script, or if you have a strange system configuration, so\n\
152 that SBCL can't by default find one of the files it needs. For\n\
153 information on such options, see the sbcl(1) man page.\n\
155 More information on SBCL can be found on its man page, or at\n\
156 <http://sbcl.sf.net/>.\n");
162 printf("SBCL %s\n", SBCL_VERSION_STRING);
175 This is SBCL %s, an implementation of ANSI Common Lisp.\n\
176 More information about SBCL is available at <http://www.sbcl.org/>.\n\
178 SBCL is free software, provided as is, with absolutely no warranty.\n\
179 It is mostly in the public domain; some portions are provided under\n\
180 BSD-style licenses. See the CREDITS and COPYING files in the\n\
181 distribution for more information.\n\
182 ", SBCL_VERSION_STRING);
187 main(int argc, char *argv[], char *envp[])
189 /* the name of the core file we're to execute. Note that this is
190 * a malloc'ed string which should be freed eventually. */
193 /* other command line options */
194 boolean noinform = 0;
195 boolean end_runtime_options = 0;
197 lispobj initial_function;
199 setlocale(LC_ALL, "");
201 /* KLUDGE: os_vm_page_size is set by os_init(), and on some
202 * systems (e.g. Alpha) arch_init() needs need os_vm_page_size, so
203 * it must follow os_init(). -- WHN 2000-01-26 */
209 /* Parse our part of the command line (aka "runtime options"),
210 * stripping out those options that we handle. */
213 while (argi < argc) {
214 char *arg = argv[argi];
215 if (0 == strcmp(arg, "--noinform")) {
218 } else if (0 == strcmp(arg, "--core")) {
220 lose("more than one core file specified");
224 lose("missing filename for --core argument");
226 core = copied_string(argv[argi]);
229 } else if (0 == strcmp(arg, "--help")) {
230 /* I think this is the (or a) usual convention: upon
231 * seeing "--help" we immediately print our help
232 * string and exit, ignoring everything else. */
235 } else if (0 == strcmp(arg, "--version")) {
236 /* As in "--help" case, I think this is expected. */
239 } else if (0 == strcmp(arg, "--end-runtime-options")) {
240 end_runtime_options = 1;
244 /* This option was unrecognized as a runtime option,
245 * so it must be a toplevel option or a user option,
246 * so we must be past the end of the runtime option
251 /* This is where we strip out those options that we handle. We
252 * also take this opportunity to make sure that we don't find
253 * an out-of-place "--end-runtime-options" option. */
255 char *argi0 = argv[argi];
257 while (argi < argc) {
258 char *arg = argv[argi++];
259 /* If we encounter --end-runtime-options for the first
260 * time after the point where we had to give up on
261 * runtime options, then the point where we had to
262 * give up on runtime options must've been a user
264 if (!end_runtime_options &&
265 0 == strcmp(arg, "--end-runtime-options")) {
266 lose("bad runtime option \"%s\"", argi0);
275 /* If no core file was specified, look for one. */
277 char *sbcl_home = getenv("SBCL_HOME");
279 char *stem = "/sbcl.core";
280 if(!sbcl_home) sbcl_home = SBCL_HOME;
281 lookhere = (char *) calloc(strlen(sbcl_home) +
285 sprintf(lookhere, "%s%s", sbcl_home, stem);
286 core = copied_existing_filename_or_null(lookhere);
289 lose("can't find core file");
292 /* Make sure that SBCL_HOME is set, no matter where the core was
294 if (!getenv("SBCL_HOME")) {
295 char *envstring, *copied_core, *dir;
296 char *stem = "SBCL_HOME=";
297 copied_core = copied_string(core);
298 dir = dirname(copied_core);
299 envstring = (char *) calloc(strlen(stem) +
303 sprintf(envstring, "%s%s", stem, dir);
313 #if defined(SVR4) || defined(__linux__)
317 define_var("nil", NIL, 1);
318 define_var("t", T, 1);
320 set_lossage_handler(monitor_or_something);
324 initial_function = load_core_file(core);
325 if (initial_function == NIL) {
326 lose("couldn't find initial function");
328 SHOW("freeing core");
331 gc_initialize_pointers();
334 arch_install_interrupt_handlers();
335 os_install_interrupt_handlers();
337 /* Convert remaining argv values to something that Lisp can grok. */
338 SHOW("setting POSIX-ARGV symbol value");
339 SetSymbolValue(POSIX_ARGV, alloc_base_string_list(argv),0);
341 /* Install a handler to pick off SIGINT until the Lisp system gets
342 * far enough along to install its own handler. */
345 FSHOW((stderr, "/funcalling initial_function=0x%lx\n", initial_function));
346 create_initial_thread(initial_function);
347 lose("CATS. CATS ARE NICE.");