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>
25 #include <sys/param.h>
36 #include "interrupt.h"
53 /* SIGINT handler that invokes the monitor (for when Lisp isn't up to it) */
55 static void sigint_handler(int signal, siginfo_t *info, void *void_context)
57 printf("\nSIGINT hit at 0x%08lX\n", *os_context_pc_addr(void_context));
61 /* (This is not static, because we want to be able to call it from
63 void sigint_init(void)
65 install_handler(SIGINT, sigint_handler);
69 * helper functions for dealing with command line args
73 successful_malloc(size_t size)
75 void* result = malloc(size);
77 lose("malloc failure");
84 copied_string(char *string)
86 return strcpy(successful_malloc(1+strlen(string)), string);
90 copied_existing_filename_or_null(char *filename)
92 struct stat filename_stat;
93 if (stat(filename, &filename_stat)) { /* if failure */
96 return copied_string(filename);
100 /* Convert a null-terminated array of null-terminated strings (e.g.
101 * argv or envp) into a Lisp list of Lisp strings. */
103 alloc_string_list(char *array_ptr[])
106 return alloc_cons(alloc_string(*array_ptr),
107 alloc_string_list(1 + array_ptr));
114 main(int argc, char *argv[], char *envp[])
116 /* the name of the core file we're to execute. Note that this is
117 * a malloc'ed string which must be freed eventually. */
120 /* other command line options */
121 boolean noinform = 0;
122 boolean end_runtime_options = 0;
124 lispobj initial_function;
130 /* Parse our part of the command line (aka "runtime options"),
131 * stripping out those options that we handle. */
134 while (argi < argc) {
135 char *arg = argv[argi];
136 if (0 == strcmp(arg, "--noinform")) {
139 } else if (0 == strcmp(arg, "--core")) {
141 lose("more than one core file specified");
144 core = copied_string(argv[argi]);
146 lose("missing filename for --core argument");
150 } else if (0 == strcmp(arg, "--end-runtime-options")) {
151 end_runtime_options = 1;
155 /* This option was unrecognized as a runtime option,
156 * so it must be a toplevel option or a user option,
157 * so we must be past the end of the runtime option
162 /* This is where we strip out those options that we handle. We
163 * also take this opportunity to make sure that we don't find
164 * an out-of-place "--end-runtime-options" option. */
166 char *argi0 = argv[argi];
168 while (argi < argc) {
169 char *arg = argv[argi++];
170 /* If we encounter --end-runtime-options for the first
171 * time after the point where we had to give up on
172 * runtime options, then the point where we had to
173 * give up on runtime options must've been a user
175 if (!end_runtime_options &&
176 0 == strcmp(arg, "--end-runtime-options")) {
177 lose("bad runtime option \"%s\"", argi0);
186 /* If no core file was specified, look for one. */
188 char *sbcl_home = getenv("SBCL_HOME");
191 asprintf(&lookhere, "%s/sbcl.core", sbcl_home);
192 core = copied_existing_filename_or_null(lookhere);
195 core = copied_existing_filename_or_null("/usr/lib/sbcl.core");
197 core = copied_existing_filename_or_null("/usr/local/lib/sbcl.core");
201 lose("can't find core file");
207 "This is SBCL " SBCL_VERSION_STRING ", an implementation of ANSI Common Lisp.
209 SBCL is derived from the CMU CL system created at Carnegie Mellon University.
210 Besides material created at Carnegie Mellon University, and material
211 contributed by volunteers since its release into the public domain, CMU CL
212 contained, and SBCL contains, material copyrighted by
213 Massachusetts Institute of Technology, 1986;
214 Symbolics, Inc., 1989, 1990, 1991, 1992; and
215 Xerox Corporation, 1985, 1986, 1987, 1988, 1989, 1990.
216 More information about the origin of SBCL is available in the CREDITS file
219 SBCL is a free software system, provided as is, with absolutely no warranty.
220 It is mostly public domain software, but also includes some software from
221 MIT, Symbolics, and Xerox, used under BSD-style licenses which allow copying
222 only under certain conditions. More information about copying SBCL is
223 available in the COPYING file in the distribution.
225 More information on SBCL is available at <http://sbcl.sourceforge.net/>.
233 #if defined(SVR4) || defined(__linux__)
237 define_var("nil", NIL, 1);
238 define_var("t", T, 1);
240 set_lossage_handler(ldb_monitor);
249 initial_function = load_core_file(core);
250 if (initial_function == NIL) {
251 lose("couldn't find initial function");
256 gencgc_pickup_dynamic();
258 #if defined WANT_CGC && defined X86_CGC_ACTIVE_P
260 extern int use_cgc_p;
261 lispobj x = SymbolValue(X86_CGC_ACTIVE_P);
262 if (x != type_UnboundMarker && x != NIL) {
263 /* Enable allocator. */
270 #ifdef BINDING_STACK_POINTER
271 SetSymbolValue(BINDING_STACK_POINTER, (lispobj)binding_stack);
273 #if defined INTERNAL_GC_TRIGGER && !defined __i386__
274 SetSymbolValue(INTERNAL_GC_TRIGGER, make_fixnum(-1));
279 arch_install_interrupt_handlers();
280 os_install_interrupt_handlers();
282 #ifdef PSEUDO_ATOMIC_ATOMIC
283 /* Turn on pseudo atomic for when we call into Lisp. */
284 SetSymbolValue(PSEUDO_ATOMIC_ATOMIC, make_fixnum(1));
285 SetSymbolValue(PSEUDO_ATOMIC_INTERRUPTED, make_fixnum(0));
288 /* Convert remaining argv values to something that Lisp can grok. */
289 SetSymbolValue(POSIX_ARGV, alloc_string_list(argv));
291 /* Install a handler to pick off SIGINT until the Lisp system gets
292 * far enough along to install its own handler. */
295 funcall0(initial_function);
297 /* initial_function() is not supposed to return. */
298 lose("Lisp initial_function gave up control.");