/* main.c - contains main() and variables for the global options Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Institut f. Computersprachen, TU Wien R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser, M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, J. Wenninger This file is part of CACAO. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Contact: cacao@complang.tuwien.ac.at Authors: Reinhard Grafl Changes: Andi Krall Mark Probst Philipp Tomsich This module does the following tasks: - Command line option handling - Calling initialization routines - Calling the class loader - Running the main method $Id: main.c 1590 2004-11-25 13:24:49Z christian $ */ #include #include #include "exceptions.h" #include "main.h" #include "options.h" #include "global.h" #include "tables.h" #include "loader.h" #include "jit/jit.h" #include "asmpart.h" #include "builtin.h" #include "native.h" #include "statistics.h" #include "mm/boehm.h" #include "threads/thread.h" #include "toolbox/logging.h" #include "toolbox/memory.h" #include "jit/parseRTstats.h" #include "nat/java_io_File.h" /* required by java_lang_Runtime.h */ #include "nat/java_util_Properties.h" /* required by java_lang_Runtime.h */ #include "nat/java_lang_Runtime.h" #include "nat/java_lang_Throwable.h" #ifdef TYPEINFO_DEBUG_TEST #include "typeinfo.h" #endif bool cacao_initializing; char *classpath; /* contains classpath */ char *mainstring; static classinfo *mainclass; #if defined(USE_THREADS) && !defined(NATIVE_THREADS) void **stackbottom = 0; #endif /* define command line options ************************************************/ #define OPT_CLASSPATH 2 #define OPT_D 3 #define OPT_MS 4 #define OPT_MX 5 #define OPT_VERBOSE1 6 #define OPT_VERBOSE 7 #define OPT_VERBOSEGC 8 #define OPT_VERBOSECALL 9 #define OPT_NOIEEE 10 #define OPT_SOFTNULL 11 #define OPT_TIME 12 #define OPT_STAT 13 #define OPT_LOG 14 #define OPT_CHECK 15 #define OPT_LOAD 16 #define OPT_METHOD 17 #define OPT_SIGNATURE 18 #define OPT_SHOW 19 #define OPT_ALL 20 #define OPT_OLOOP 24 #define OPT_INLINING 25 #define OPT_RT 26 #define OPT_XTA 27 #define OPT_VTA 28 #define OPT_VERBOSETC 29 #define OPT_NOVERIFY 30 #define OPT_LIBERALUTF 31 #define OPT_VERBOSEEXCEPTION 32 #define OPT_EAGER 33 #define OPT_LSRA 34 opt_struct opts[] = { {"classpath", true, OPT_CLASSPATH}, {"cp", true, OPT_CLASSPATH}, {"D", true, OPT_D}, {"Xms", true, OPT_MS}, {"Xmx", true, OPT_MX}, {"ms", true, OPT_MS}, {"mx", true, OPT_MX}, {"noasyncgc", false, OPT_IGNORE}, {"noverify", false, OPT_NOVERIFY}, {"liberalutf", false, OPT_LIBERALUTF}, {"oss", true, OPT_IGNORE}, {"ss", true, OPT_IGNORE}, {"v", false, OPT_VERBOSE1}, {"verbose", false, OPT_VERBOSE}, {"verbosegc", false, OPT_VERBOSEGC}, {"verbosecall", false, OPT_VERBOSECALL}, {"verboseexception", false, OPT_VERBOSEEXCEPTION}, #ifdef TYPECHECK_VERBOSE {"verbosetc", false, OPT_VERBOSETC}, #endif #if defined(__ALPHA__) {"noieee", false, OPT_NOIEEE}, #endif {"softnull", false, OPT_SOFTNULL}, {"time", false, OPT_TIME}, {"stat", false, OPT_STAT}, {"log", true, OPT_LOG}, {"c", true, OPT_CHECK}, {"l", false, OPT_LOAD}, { "eager", false, OPT_EAGER }, {"m", true, OPT_METHOD}, {"sig", true, OPT_SIGNATURE}, {"s", true, OPT_SHOW}, {"all", false, OPT_ALL}, {"oloop", false, OPT_OLOOP}, {"i", true, OPT_INLINING}, {"rt", false, OPT_RT}, {"xta", false, OPT_XTA}, {"vta", false, OPT_VTA}, {"lsra", false, OPT_LSRA}, {NULL, false, 0} }; /******************** interne Function: print_usage ************************ Prints the correct usage syntax to stdout. ***************************************************************************/ static void usage() { printf("USAGE: cacao [options] classname [program arguments]\n"); printf("Options:\n"); printf(" -cp path ............. specify a path to look for classes\n"); printf(" -classpath path ...... specify a path to look for classes\n"); printf(" -Dpropertyname=value . add an entry to the property list\n"); printf(" -Xmx maxmem[kK|mM] ... specify the size for the heap\n"); printf(" -Xms initmem[kK|mM] .. specify the initial size for the heap\n"); printf(" -mx maxmem[kK|mM] .... specify the size for the heap\n"); printf(" -ms initmem[kK|mM] ... specify the initial size for the heap\n"); printf(" -v ................... write state-information\n"); printf(" -verbose ............. write more information\n"); printf(" -verbosegc ........... write message for each GC\n"); printf(" -verbosecall ......... write message for each call\n"); printf(" -verboseexception .... write message for each step of stack unwinding\n"); #ifdef TYPECHECK_VERBOSE printf(" -verbosetc ........... write debug messages while typechecking\n"); #endif #if defined(__ALPHA__) printf(" -noieee .............. don't use ieee compliant arithmetic\n"); #endif printf(" -noverify ............ don't verify classfiles\n"); printf(" -liberalutf........... don't warn about overlong UTF-8 sequences\n"); printf(" -softnull ............ use software nullpointer check\n"); printf(" -time ................ measure the runtime\n"); printf(" -stat ................ detailed compiler statistics\n"); printf(" -log logfile ......... specify a name for the logfile\n"); printf(" -c(heck)b(ounds) ..... don't check array bounds\n"); printf(" s(ync) ....... don't check for synchronization\n"); printf(" -oloop ............... optimize array accesses in loops\n"); printf(" -l ................... don't start the class after loading\n"); printf(" -eager ............... perform eager class loading and linking\n"); printf(" -all ................. compile all methods, no execution\n"); printf(" -m ................... compile only a specific method\n"); printf(" -sig ................. specify signature for a specific method\n"); printf(" -s(how)a(ssembler) ... show disassembled listing\n"); printf(" c(onstants) ... show the constant pool\n"); printf(" d(atasegment).. show data segment listing\n"); printf(" i(ntermediate). show intermediate representation\n"); printf(" m(ethods)...... show class fields and methods\n"); printf(" u(tf) ......... show the utf - hash\n"); printf(" -i n ............. activate inlining\n"); printf(" v ............. inline virtual methods\n"); printf(" uses/turns rt option on\n"); printf(" e ............. inline methods with exceptions\n"); printf(" p ............. optimize argument renaming\n"); printf(" o ............. inline methods of foreign classes\n"); printf(" -rt .................. use rapid type analysis\n"); printf(" -xta ................. use x type analysis\n"); printf(" -vta ................. use variable type analysis\n"); printf(" -lsra ................ use linear scan register allocation\n"); /* exit with error code */ exit(1); } #ifdef TYPECHECK_STATISTICS void typecheck_print_statistics(FILE *file); #endif /* * void exit_handler(void) * ----------------------- * The exit_handler function is called upon program termination to shutdown * the various subsystems and release the resources allocated to the VM. */ void exit_handler(void) { /********************* Print debug tables ************************/ if (showmethods) class_showmethods(mainclass); if (showconstantpool) class_showconstantpool(mainclass); if (showutf) utf_show(); #if defined(USE_THREADS) && !defined(NATIVE_THREADS) clear_thread_flags(); /* restores standard file descriptor flags */ #endif /************************ Free all resources *******************/ loader_close(); tables_close(); MFREE(classpath, u1, strlen(classpath)); if (opt_verbose || getcompilingtime || opt_stat) { log_text("CACAO terminated"); if (opt_stat) { print_stats(); #ifdef TYPECHECK_STATISTICS typecheck_print_statistics(get_logfile()); #endif } if (getcompilingtime) print_times(); mem_usagelog(1); } } /************************** Function: main ******************************* The main program. **************************************************************************/ int main(int argc, char **argv) { s4 i, j; void *dummy; /********** interne (nur fuer main relevante Optionen) **************/ char logfilename[200] = ""; u4 heapmaxsize = 64 * 1024 * 1024; u4 heapstartsize = 200 * 1024; char *cp; bool startit = true; char *specificmethodname = NULL; char *specificsignature = NULL; #if defined(USE_THREADS) && !defined(NATIVE_THREADS) stackbottom = &dummy; #endif if (atexit(exit_handler)) throw_cacao_exception_exit(string_java_lang_InternalError, "Unable to register exit_handler"); /************ Collect info from the environment ************************/ /* set an initial, minimal classpath */ classpath = MNEW(char, 2); strcpy(classpath, "."); /* get classpath environment */ cp = getenv("CLASSPATH"); if (cp) { classpath = MREALLOC(classpath, char, strlen(classpath), strlen(classpath) + 1 + strlen(cp) + 1); strcat(classpath, ":"); strcat(classpath, cp); } /***************** Interpret the command line *****************/ checknull = false; opt_noieee = false; while ((i = get_opt(argc, argv, opts)) != OPT_DONE) { switch (i) { case OPT_IGNORE: break; case OPT_CLASSPATH: /* forget old classpath and set the argument as new classpath */ MFREE(classpath, char, strlen(classpath)); classpath = MNEW(char, strlen(opt_arg) + 1); strcpy(classpath, opt_arg); break; case OPT_D: { int n; int l = strlen(opt_arg); for (n = 0; n < l; n++) { if (opt_arg[n] == '=') { opt_arg[n] = '\0'; create_property(opt_arg, opt_arg + n + 1); goto didit; } } usage(); didit: ; } break; case OPT_MS: case OPT_MX: { char c; c = opt_arg[strlen(opt_arg) - 1]; if (c == 'k' || c == 'K') { j = 1024 * atoi(opt_arg); } else if (c == 'm' || c == 'M') { j = 1024 * 1024 * atoi(opt_arg); } else j = atoi(opt_arg); if (i == OPT_MX) heapmaxsize = j; else heapstartsize = j; } break; case OPT_VERBOSE1: opt_verbose = true; break; case OPT_VERBOSE: opt_verbose = true; loadverbose = true; linkverbose = true; initverbose = true; compileverbose = true; break; case OPT_VERBOSEEXCEPTION: verboseexception = true; break; case OPT_VERBOSEGC: collectverbose = true; break; #ifdef TYPECHECK_VERBOSE case OPT_VERBOSETC: typecheckverbose = true; break; #endif case OPT_VERBOSECALL: runverbose = true; break; case OPT_NOIEEE: opt_noieee = true; break; case OPT_NOVERIFY: opt_verify = false; break; case OPT_LIBERALUTF: opt_liberalutf = true; break; case OPT_SOFTNULL: checknull = true; break; case OPT_TIME: getcompilingtime = true; getloadingtime = true; break; case OPT_STAT: opt_stat = true; break; case OPT_LOG: strcpy(logfilename, opt_arg); break; case OPT_CHECK: for (j = 0; j < strlen(opt_arg); j++) { switch (opt_arg[j]) { case 'b': checkbounds = false; break; case 's': checksync = false; break; default: usage(); } } break; case OPT_LOAD: startit = false; makeinitializations = false; break; case OPT_EAGER: opt_eager = true; break; case OPT_METHOD: startit = false; specificmethodname = opt_arg; makeinitializations = false; break; case OPT_SIGNATURE: specificsignature = opt_arg; break; case OPT_ALL: compileall = true; startit = false; makeinitializations = false; break; case OPT_SHOW: /* Display options */ for (j = 0; j < strlen(opt_arg); j++) { switch (opt_arg[j]) { case 'a': showdisassemble = true; compileverbose = true; break; case 'c': showconstantpool = true; break; case 'd': showddatasegment = true; break; case 'i': showintermediate = true; compileverbose = true; break; case 'm': showmethods = true; break; case 'u': showutf = true; break; default: usage(); } } break; case OPT_OLOOP: opt_loops = true; break; case OPT_INLINING: for (j = 0; j < strlen(opt_arg); j++) { switch (opt_arg[j]) { case 'n': /* define in options.h; Used in main.c, jit.c & inline.c */ #ifdef INAFTERMAIN useinliningm = true; useinlining = false; #else useinlining = true; #endif break; case 'v': inlinevirtuals = true; opt_rt = true; break; case 'e': inlineexceptions = true; break; case 'p': inlineparamopt = true; break; case 'o': inlineoutsiders = true; break; default: usage(); } } break; case OPT_RT: opt_rt = true; break; case OPT_XTA: opt_xta = false; /**not yet **/ break; case OPT_VTA: /***opt_vta = true; not yet **/ break; case OPT_LSRA: #if defined(__I386__) || defined(__ALPHA__) opt_lsra = true; #else printf("LSRA not available for this architecture\n"); opt_lsra = false; #endif break; default: usage(); } } if (opt_ind >= argc) usage(); #if 0 { char *gnucp = "/home/twisti/src/cacao/cacaodev/classpath/lib/:"; cp = classpath; classpath = MNEW(char, strlen(cp) + strlen(classpath) + 1); strcpy(classpath, gnucp); strcat(classpath, cp); MFREE(cp, char, strlen(cp)); } #endif mainstring = argv[opt_ind++]; for (i = strlen(mainstring) - 1; i >= 0; i--) { /* Transform dots into slashes */ if (mainstring[i] == '.') mainstring[i] = '/'; /* in the class name */ } /**************************** Program start *****************************/ log_init(logfilename); if (opt_verbose) log_text("CACAO started -------------------------------------------------------"); /* initialize the garbage collector */ gc_init(heapmaxsize, heapstartsize); tables_init(); suck_init(classpath); cacao_initializing = true; #if defined(USE_THREADS) #if defined(NATIVE_THREADS) initThreadsEarly(); #endif initLocks(); #endif /* install architecture dependent signal handler used for exceptions */ init_exceptions(); /* initializes jit compiler and codegen stuff */ jit_init(); loader_init((u1 *) &dummy); /* initialize exceptions used in the system */ if (!init_system_exceptions()) throw_main_exception_exit(); native_loadclasses(); #if defined(USE_THREADS) initThreads((u1 *) &dummy); #endif *threadrootmethod = NULL; /*That's important, otherwise we get into trouble, if the Runtime static initializer is called before (circular dependency. This is with classpath 0.09. Another important thing is, that this has to happen after initThreads!!! */ if (!class_init(class_new(utf_new_char("java/lang/System")))) throw_main_exception_exit(); /* jni_init(); */ cacao_initializing = false; /************************* Start worker routines ********************/ if (startit) { methodinfo *mainmethod; java_objectarray *a; s4 status; /* set return value to OK */ status = 0; /* create, load and link the main class */ mainclass = class_new(utf_new_char(mainstring)); if (!class_load(mainclass)) throw_main_exception_exit(); if (!class_link(mainclass)) throw_main_exception_exit(); mainmethod = class_resolveclassmethod(mainclass, utf_new_char("main"), utf_new_char("([Ljava/lang/String;)V"), mainclass, false); /* problems with main method? */ /* if (*exceptionptr) */ /* throw_exception_exit(); */ /* there is no main method or it isn't static */ if (!mainmethod || !(mainmethod->flags & ACC_STATIC)) { *exceptionptr = new_exception_message(string_java_lang_NoSuchMethodError, "main"); throw_main_exception_exit(); } a = builtin_anewarray(argc - opt_ind, class_java_lang_String); for (i = opt_ind; i < argc; i++) { a->data[i - opt_ind] = (java_objectheader *) javastring_new(utf_new_char(argv[i])); } #ifdef TYPEINFO_DEBUG_TEST /* test the typeinfo system */ typeinfo_test(); #endif /*class_showmethods(currentThread->group->header.vftbl->class); */ *threadrootmethod = mainmethod; /* here we go... */ asm_calljavafunction(mainmethod, a, NULL, NULL, NULL); /* exception occurred? */ if (*exceptionptr) { throw_main_exception(); status = 1; } #if defined(USE_THREADS) #if defined(NATIVE_THREADS) joinAllThreads(); #else killThread(currentThread); #endif #endif /* now exit the JavaVM */ cacao_exit(status); } /************* If requested, compile all methods ********************/ if (compileall) { classinfo *c; methodinfo *m; u4 slot; s4 i; /* create all classes found in the classpath */ /* XXX currently only works with zip/jar's */ create_all_classes(); /* load and link all classes */ for (slot = 0; slot < class_hash.size; slot++) { c = class_hash.ptr[slot]; while (c) { if (!c->loaded) if (!class_load(c)) throw_main_exception_exit(); if (!c->linked) if (!class_link(c)) throw_main_exception_exit(); /* compile all class methods */ for (i = 0; i < c->methodscount; i++) { m = &(c->methods[i]); if (m->jcode) { (void) jit_compile(m); } } c = c->hashlink; } } } /******** If requested, compile a specific method ***************/ if (specificmethodname) { methodinfo *m; /* create, load and link the main class */ mainclass = class_new(utf_new_char(mainstring)); if (!class_load(mainclass)) throw_main_exception_exit(); if (!class_link(mainclass)) throw_main_exception_exit(); if (specificsignature) { m = class_resolveclassmethod(mainclass, utf_new_char(specificmethodname), utf_new_char(specificsignature), mainclass, false); } else { m = class_resolveclassmethod(mainclass, utf_new_char(specificmethodname), NULL, mainclass, false); } if (!m) { char message[MAXLOGTEXT]; sprintf(message, "%s%s", specificmethodname, specificsignature ? specificsignature : ""); *exceptionptr = new_exception_message(string_java_lang_NoSuchMethodException, message); throw_main_exception_exit(); } jit_compile(m); } cacao_shutdown(0); /* keep compiler happy */ return 0; } /* cacao_exit ****************************************************************** Calls java.lang.Runtime.exit(I)V to exit the JavaVM correctly. *******************************************************************************/ void cacao_exit(s4 status) { classinfo *c; methodinfo *m; /* class should already be loaded, but who knows... */ c = class_new(utf_new_char("java/lang/System")); if (!class_load(c)) throw_main_exception_exit(); if (!class_link(c)) throw_main_exception_exit(); /* call System.exit(I)V */ m = class_resolveclassmethod(c, utf_new_char("exit"), utf_new_char("(I)V"), class_java_lang_Object, true); if (!m) throw_main_exception_exit(); /* call the exit function with passed exit status */ asm_calljavafunction(m, #if POINTERSIZE == 8 (void *) (s8) status, #else (void *) status, #endif NULL, NULL, NULL); /* this should never happen */ if (*exceptionptr) throw_exception_exit(); throw_cacao_exception_exit(string_java_lang_InternalError, "System.exit(I)V returned without exception"); } /*************************** Shutdown function ********************************* Terminates the system immediately without freeing memory explicitly (to be used only for abnormal termination) *******************************************************************************/ void cacao_shutdown(s4 status) { if (opt_verbose || getcompilingtime || opt_stat) { log_text("CACAO terminated by shutdown"); dolog("Exit status: %d\n", (s4) status); } exit(status); } /* * These are local overrides for various environment variables in Emacs. * Please do not remove this and leave it at the end of the file, where * Emacs will automagically detect them. * --------------------------------------------------------------------- * Local variables: * mode: c * indent-tabs-mode: t * c-basic-offset: 4 * tab-width: 4 * End: */