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\
169 More information about SBCL is available at <http://www.sbcl.org/>.\n\
171 SBCL is free software, provided as is, with absolutely no warranty.\n\
172 It is mostly in the public domain; some portions are provided under\n\
173 BSD-style licenses. See the CREDITS and COPYING files in the\n\
174 distribution for more information.\n\
175 ", SBCL_VERSION_STRING);
180 main(int argc, char *argv[], char *envp[])
182 /* the name of the core file we're to execute. Note that this is
183 * a malloc'ed string which should be freed eventually. */
186 /* other command line options */
187 boolean noinform = 0;
188 boolean end_runtime_options = 0;
190 lispobj initial_function;
192 /* KLUDGE: os_vm_page_size is set by os_init(), and on some
193 * systems (e.g. Alpha) arch_init() needs need os_vm_page_size, so
194 * it must follow os_init(). -- WHN 2000-01-26 */
200 /* Parse our part of the command line (aka "runtime options"),
201 * stripping out those options that we handle. */
204 while (argi < argc) {
205 char *arg = argv[argi];
206 if (0 == strcmp(arg, "--noinform")) {
209 } else if (0 == strcmp(arg, "--core")) {
211 lose("more than one core file specified");
215 lose("missing filename for --core argument");
217 core = copied_string(argv[argi]);
220 } else if (0 == strcmp(arg, "--help")) {
221 /* I think this is the (or a) usual convention: upon
222 * seeing "--help" we immediately print our help
223 * string and exit, ignoring everything else. */
226 } else if (0 == strcmp(arg, "--version")) {
227 /* As in "--help" case, I think this is expected. */
230 } else if (0 == strcmp(arg, "--end-runtime-options")) {
231 end_runtime_options = 1;
235 /* This option was unrecognized as a runtime option,
236 * so it must be a toplevel option or a user option,
237 * so we must be past the end of the runtime option
242 /* This is where we strip out those options that we handle. We
243 * also take this opportunity to make sure that we don't find
244 * an out-of-place "--end-runtime-options" option. */
246 char *argi0 = argv[argi];
248 while (argi < argc) {
249 char *arg = argv[argi++];
250 /* If we encounter --end-runtime-options for the first
251 * time after the point where we had to give up on
252 * runtime options, then the point where we had to
253 * give up on runtime options must've been a user
255 if (!end_runtime_options &&
256 0 == strcmp(arg, "--end-runtime-options")) {
257 lose("bad runtime option \"%s\"", argi0);
266 /* If no core file was specified, look for one. */
268 char *sbcl_home = getenv("SBCL_HOME");
270 char *stem = "/sbcl.core";
271 if(!sbcl_home) sbcl_home = SBCL_HOME;
272 lookhere = (char *) calloc(strlen(sbcl_home) +
276 sprintf(lookhere, "%s%s", sbcl_home, stem);
277 core = copied_existing_filename_or_null(lookhere);
280 lose("can't find core file");
283 /* Make sure that SBCL_HOME is set, no matter where the core was
285 if (!getenv("SBCL_HOME")) {
286 char *envstring, *copied_core, *dir;
287 char *stem = "SBCL_HOME=";
288 copied_core = copied_string(core);
289 dir = dirname(copied_core);
290 envstring = (char *) calloc(strlen(stem) +
294 sprintf(envstring, "%s%s", stem, dir);
304 #if defined(SVR4) || defined(__linux__)
308 define_var("nil", NIL, 1);
309 define_var("t", T, 1);
311 set_lossage_handler(monitor_or_something);
315 initial_function = load_core_file(core);
316 if (initial_function == NIL) {
317 lose("couldn't find initial function");
319 SHOW("freeing core");
322 gc_initialize_pointers();
325 arch_install_interrupt_handlers();
326 os_install_interrupt_handlers();
328 /* Convert remaining argv values to something that Lisp can grok. */
329 SHOW("setting POSIX-ARGV symbol value");
330 SetSymbolValue(POSIX_ARGV, alloc_base_string_list(argv),0);
332 /* Install a handler to pick off SIGINT until the Lisp system gets
333 * far enough along to install its own handler. */
336 FSHOW((stderr, "/funcalling initial_function=0x%lx\n", initial_function));
337 create_initial_thread(initial_function);
338 lose("CATS. CATS ARE NICE.");