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);
169 "This is SBCL %s, an implementation of ANSI Common Lisp.\n\
170 More information about SBCL is available at <http://www.sbcl.org/>.\n\
172 SBCL is free software, provided as is, with absolutely no warranty.\n\
173 It is mostly in the public domain; some portions are provided under\n\
174 BSD-style licenses. See the CREDITS and COPYING files in the\n\
175 distribution for more information.\n\
176 ", SBCL_VERSION_STRING);
181 main(int argc, char *argv[], char *envp[])
183 /* the name of the core file we're to execute. Note that this is
184 * a malloc'ed string which should be freed eventually. */
186 char **sbcl_argv = 0;
188 /* other command line options */
189 boolean noinform = 0;
190 boolean end_runtime_options = 0;
192 lispobj initial_function;
195 block_blockable_signals();
197 setlocale(LC_ALL, "");
199 /* KLUDGE: os_vm_page_size is set by os_init(), and on some
200 * systems (e.g. Alpha) arch_init() needs need os_vm_page_size, so
201 * it must follow os_init(). -- WHN 2000-01-26 */
207 /* Parse our part of the command line (aka "runtime options"),
208 * stripping out those options that we handle. */
211 while (argi < argc) {
212 char *arg = argv[argi];
213 if (0 == strcmp(arg, "--noinform")) {
216 } else if (0 == strcmp(arg, "--core")) {
218 lose("more than one core file specified");
222 lose("missing filename for --core argument");
224 core = copied_string(argv[argi]);
227 } else if (0 == strcmp(arg, "--help")) {
228 /* I think this is the (or a) usual convention: upon
229 * seeing "--help" we immediately print our help
230 * string and exit, ignoring everything else. */
233 } else if (0 == strcmp(arg, "--version")) {
234 /* As in "--help" case, I think this is expected. */
237 } else if (0 == strcmp(arg, "--end-runtime-options")) {
238 end_runtime_options = 1;
242 /* This option was unrecognized as a runtime option,
243 * so it must be a toplevel option or a user option,
244 * so we must be past the end of the runtime option
249 /* This is where we strip out those options that we handle. We
250 * also take this opportunity to make sure that we don't find
251 * an out-of-place "--end-runtime-options" option. */
253 char *argi0 = argv[argi];
255 /* (argc - argi) for the arguments, one for the binary,
256 and one for the terminating NULL. */
257 sbcl_argv = successful_malloc((2 + argc - argi) * sizeof(char *));
258 sbcl_argv[0] = argv[0];
259 while (argi < argc) {
260 char *arg = argv[argi++];
261 /* If we encounter --end-runtime-options for the first
262 * time after the point where we had to give up on
263 * runtime options, then the point where we had to
264 * give up on runtime options must've been a user
266 if (!end_runtime_options &&
267 0 == strcmp(arg, "--end-runtime-options")) {
268 lose("bad runtime option \"%s\"", argi0);
270 sbcl_argv[argj++] = arg;
276 /* If no core file was specified, look for one. */
278 char *sbcl_home = getenv("SBCL_HOME");
280 char *stem = "/sbcl.core";
281 if(!sbcl_home) sbcl_home = SBCL_HOME;
282 lookhere = (char *) calloc(strlen(sbcl_home) +
286 sprintf(lookhere, "%s%s", sbcl_home, stem);
287 core = copied_existing_filename_or_null(lookhere);
290 lose("can't find core file");
293 /* Make sure that SBCL_HOME is set, no matter where the core was
295 if (!getenv("SBCL_HOME")) {
296 char *envstring, *copied_core, *dir;
297 char *stem = "SBCL_HOME=";
298 copied_core = copied_string(core);
299 dir = dirname(copied_core);
300 envstring = (char *) calloc(strlen(stem) +
304 sprintf(envstring, "%s%s", stem, dir);
314 #if defined(SVR4) || defined(__linux__)
318 define_var("nil", NIL, 1);
319 define_var("t", T, 1);
321 set_lossage_handler(monitor_or_something);
325 initial_function = load_core_file(core);
326 if (initial_function == NIL) {
327 lose("couldn't find initial function");
329 SHOW("freeing core");
332 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(sbcl_argv),0);
342 FSHOW((stderr, "/funcalling initial_function=0x%lx\n", initial_function));
343 create_initial_thread(initial_function);
344 lose("CATS. CATS ARE NICE.");