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>
32 #if defined(SVR4) || defined(__linux__)
43 #include "interrupt.h"
54 #include "genesis/static-symbols.h"
55 #include "genesis/symbol.h"
64 #define SBCL_HOME "/usr/local/lib/sbcl/"
68 /* SIGINT handler that invokes the monitor (for when Lisp isn't up to it) */
70 sigint_handler(int signal, siginfo_t *info, void *void_context)
72 lose("\nSIGINT hit at 0x%08lX\n",
73 (unsigned long) *os_context_pc_addr(void_context));
76 /* (This is not static, because we want to be able to call it from
81 SHOW("entering sigint_init()");
82 install_handler(SIGINT, sigint_handler);
83 SHOW("leaving sigint_init()");
87 * helper functions for dealing with command line args
91 successful_malloc(size_t size)
93 void* result = malloc(size);
95 lose("malloc failure");
99 return (void *) NULL; /* dummy value: return something ... */
103 copied_string(char *string)
105 return strcpy(successful_malloc(1+strlen(string)), string);
109 copied_existing_filename_or_null(char *filename)
111 struct stat filename_stat;
112 if (stat(filename, &filename_stat)) { /* if failure */
115 return copied_string(filename);
119 /* Convert a null-terminated array of null-terminated strings (e.g.
120 * argv or envp) into a Lisp list of Lisp base-strings. */
122 alloc_base_string_list(char *array_ptr[])
125 return alloc_cons(alloc_base_string(*array_ptr),
126 alloc_base_string_list(1 + array_ptr));
132 /* miscellaneous chattiness */
138 "SBCL is a Common Lisp programming environment. Ordinarily you shouldn't\n\
139 need command line options when you invoke it interactively: you can just\n\
140 start it and work with the customary Lisp READ-EVAL-PRINT loop.\n\
142 One option idiom which is sometimes useful interactively (e.g. when\n\
143 exercising a test case for a bug report) is\n\
144 sbcl --sysinit /dev/null --userinit /dev/null\n\
145 to keep SBCL from reading any initialization files at startup. And some\n\
146 people like to suppress the default startup message:\n\
149 Other options can be useful when you're running SBCL noninteractively,\n\
150 e.g. from a script, or if you have a strange system configuration, so\n\
151 that SBCL can't by default find one of the files it needs. For\n\
152 information on such options, see the sbcl(1) man page.\n\
154 More information on SBCL can be found on its man page, or at\n\
155 <http://sbcl.sf.net/>.\n");
161 printf("SBCL %s\n", SBCL_VERSION_STRING);
168 "This is SBCL %s, an implementation of ANSI Common Lisp.\n\
170 More information about SBCL is available at <http://www.sbcl.org/>.\
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. */
187 /* other command line options */
188 boolean noinform = 0;
189 boolean end_runtime_options = 0;
191 lispobj initial_function;
193 /* KLUDGE: os_vm_page_size is set by os_init(), and on some
194 * systems (e.g. Alpha) arch_init() needs need os_vm_page_size, so
195 * it must follow os_init(). -- WHN 2000-01-26 */
201 /* Parse our part of the command line (aka "runtime options"),
202 * stripping out those options that we handle. */
205 while (argi < argc) {
206 char *arg = argv[argi];
207 if (0 == strcmp(arg, "--noinform")) {
210 } else if (0 == strcmp(arg, "--core")) {
212 lose("more than one core file specified");
216 lose("missing filename for --core argument");
218 core = copied_string(argv[argi]);
221 } else if (0 == strcmp(arg, "--help")) {
222 /* I think this is the (or a) usual convention: upon
223 * seeing "--help" we immediately print our help
224 * string and exit, ignoring everything else. */
227 } else if (0 == strcmp(arg, "--version")) {
228 /* As in "--help" case, I think this is expected. */
231 } else if (0 == strcmp(arg, "--end-runtime-options")) {
232 end_runtime_options = 1;
236 /* This option was unrecognized as a runtime option,
237 * so it must be a toplevel option or a user option,
238 * so we must be past the end of the runtime option
243 /* This is where we strip out those options that we handle. We
244 * also take this opportunity to make sure that we don't find
245 * an out-of-place "--end-runtime-options" option. */
247 char *argi0 = argv[argi];
249 while (argi < argc) {
250 char *arg = argv[argi++];
251 /* If we encounter --end-runtime-options for the first
252 * time after the point where we had to give up on
253 * runtime options, then the point where we had to
254 * give up on runtime options must've been a user
256 if (!end_runtime_options &&
257 0 == strcmp(arg, "--end-runtime-options")) {
258 lose("bad runtime option \"%s\"", argi0);
267 /* If no core file was specified, look for one. */
269 char *sbcl_home = getenv("SBCL_HOME");
271 char *stem = "/sbcl.core";
272 if(!sbcl_home) sbcl_home = SBCL_HOME;
273 lookhere = (char *) calloc(strlen(sbcl_home) +
277 sprintf(lookhere, "%s%s", sbcl_home, stem);
278 core = copied_existing_filename_or_null(lookhere);
281 lose("can't find core file");
284 /* Make sure that SBCL_HOME is set, no matter where the core was
286 if (!getenv("SBCL_HOME")) {
287 char *envstring, *copied_core, *dir;
288 char *stem = "SBCL_HOME=";
289 copied_core = copied_string(core);
290 dir = dirname(copied_core);
291 envstring = (char *) calloc(strlen(stem) +
295 sprintf(envstring, "%s%s", stem, dir);
305 #if defined(SVR4) || defined(__linux__)
309 define_var("nil", NIL, 1);
310 define_var("t", T, 1);
312 set_lossage_handler(monitor_or_something);
316 initial_function = load_core_file(core);
317 if (initial_function == NIL) {
318 lose("couldn't find initial function");
320 SHOW("freeing core");
323 gc_initialize_pointers();
326 arch_install_interrupt_handlers();
327 os_install_interrupt_handlers();
329 /* Convert remaining argv values to something that Lisp can grok. */
330 SHOW("setting POSIX-ARGV symbol value");
331 SetSymbolValue(POSIX_ARGV, alloc_base_string_list(argv),0);
333 /* Install a handler to pick off SIGINT until the Lisp system gets
334 * far enough along to install its own handler. */
337 FSHOW((stderr, "/funcalling initial_function=0x%lx\n", initial_function));
338 create_initial_thread(initial_function);
339 lose("CATS. CATS ARE NICE.");