* Removed all Id tags.
[cacao.git] / src / cacao / cacao.c
index 38df37b3323df9546377d7b94880d7338dc95a74..ac005387bfbc27aad3c8abd55b6ee0ed5f59559f 100644 (file)
@@ -1,9 +1,9 @@
 /* src/cacao/cacao.c - contains main() of cacao
 
-   Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
-   R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
-   C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
-   Institut f. Computersprachen - TU Wien
+   Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
+   C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
+   E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
+   J. Wenninger, J. Wenninger, Institut f. Computersprachen - TU Wien
 
    This file is part of CACAO.
 
 
    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
-            Christian Thalinger
-
-   This module does the following tasks:
-     - Command line option handling
-     - Calling initialization routines
-     - Calling the class loader
-     - Running the main method
-
-   $Id: cacao.c 3933 2005-12-09 15:24:03Z twisti $
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA.
 
 */
 
 
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-
 #include "config.h"
-#include "cacao/cacao.h"
-#include "mm/boehm.h"
-#include "mm/memory.h"
-#include "native/jni.h"
-#include "native/native.h"
-
-#if defined(ENABLE_JVMTI)
-#include "native/jvmti/jvmti.h"
-#include "native/jvmti/dbg.h"
-#include <sys/types.h>
-#include <signal.h>
-#include <sys/wait.h>
-#endif
-
-#include "toolbox/logging.h"
-#include "vm/classcache.h"
-#include "vm/exceptions.h"
-#include "vm/finalizer.h"
-#include "vm/global.h"
-#include "vm/initialize.h"
-#include "vm/loader.h"
-#include "vm/options.h"
-#include "vm/signallocal.h"
-#include "vm/statistics.h"
-#include "vm/stringlocal.h"
-#include "vm/suck.h"
-#include "vm/jit/asmpart.h"
-#include "vm/jit/jit.h"
-
-#ifdef TYPEINFO_DEBUG_TEST
-#include "vm/jit/verify/typeinfo.h"
-#endif
-
-
-/* define heap sizes **********************************************************/
-
-#define HEAP_MAXSIZE      64 * 1024 * 1024  /* default 64MB                   */
-#define HEAP_STARTSIZE    2 * 1024 * 1024   /* default 2MB                    */
-#define STACK_SIZE        128 * 1024        /* default 128kB                  */
-
-#if defined(ENABLE_INTRP)
-u1 *intrp_main_stack;
-#endif
-
-
-/* CACAO related stuff ********************************************************/
-
-bool cacao_initializing;
-bool cacao_exiting;
-
-
-/* Invocation API variables ***************************************************/
-
-JavaVM *jvm;                        /* denotes a Java VM                      */
-JNIEnv *env;                        /* pointer to native method interface     */
-JDK1_1InitArgs vm_args;             /* JDK 1.1 VM initialization arguments    */
-
-
-char *bootclasspath;                    /* contains the boot classpath        */
-char *classpath;                        /* contains the 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_VERBOSESPECIFIC  8
-#define OPT_VERBOSECALL      9
-#define OPT_NOIEEE           10
-#define OPT_SOFTNULL         11
-#define OPT_TIME             12
-
-#if defined(STATISTICS)
-#define OPT_STAT             13
-#endif /* defined(STATISTICS) */
-
-#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 STATIC_ANALYSIS
-#if defined(STATIC_ANALYSIS)
-# define OPT_RT              26
-# define OPT_XTA             27 
-# define OPT_VTA             28
-#endif /* defined(STATIC_ANALYSIS) */
-
-#define OPT_VERBOSETC        29
-#define OPT_NOVERIFY         30
-#define OPT_LIBERALUTF       31
-#define OPT_VERBOSEEXCEPTION 32
-#define OPT_EAGER            33
-
-#if defined(LSRA)
-#define OPT_LSRA             34
-#endif /* defined(LSRA) */
-
-#define OPT_JAR              35
-#define OPT_BOOTCLASSPATH    36
-#define OPT_BOOTCLASSPATH_A  37
-#define OPT_BOOTCLASSPATH_P  38
-#define OPT_VERSION          39
-#define OPT_SHOWVERSION      40
-#define OPT_FULLVERSION      41
-
-#define OPT_HELP             100
-#define OPT_X                101
-
-#define OPT_JIT              102
-#define OPT_INTRP            103
-
-#define OPT_STATIC_SUPERS    104
-#define OPT_TRACE            105
-
-#define OPT_SS               106
-
-#ifdef ENABLE_JVMTI
-#define OPT_DEBUG            107
-#define OPT_AGENTLIB         108
-#define OPT_AGENTPATH        109
-#endif 
-
-#define OPT_NO_DYNAMIC       110
-
-opt_struct opts[] = {
-       { "classpath",         true,  OPT_CLASSPATH },
-       { "cp",                true,  OPT_CLASSPATH },
-       { "D",                 true,  OPT_D },
-       { "noasyncgc",         false, OPT_IGNORE },
-       { "noverify",          false, OPT_NOVERIFY },
-       { "liberalutf",        false, OPT_LIBERALUTF },
-       { "v",                 false, OPT_VERBOSE1 },
-       { "verbose",           false, OPT_VERBOSE },
-       { "verbose:",          true,  OPT_VERBOSESPECIFIC },
-       { "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 },
-#if defined(STATISTICS)
-       { "stat",              false, OPT_STAT },
-#endif
-       { "log",               true,  OPT_LOG },
-       { "c",                 true,  OPT_CHECK },
-       { "l",                 false, OPT_LOAD },
-       { "eager",             false, OPT_EAGER },
-       { "sig",               true,  OPT_SIGNATURE },
-       { "all",               false, OPT_ALL },
-       { "oloop",             false, OPT_OLOOP },
-#ifdef STATIC_ANALYSIS
-       { "rt",                false, OPT_RT },
-       { "xta",               false, OPT_XTA },
-       { "vta",               false, OPT_VTA },
-#endif
-#ifdef LSRA
-       { "lsra",              false, OPT_LSRA },
-#endif
-       { "jar",               false, OPT_JAR },
-       { "version",           false, OPT_VERSION },
-       { "showversion",       false, OPT_SHOWVERSION },
-       { "fullversion",       false, OPT_FULLVERSION },
-       { "help",              false, OPT_HELP },
-       { "?",                 false, OPT_HELP },
-
-       /* interpreter options */
-
-       { "trace",             false, OPT_TRACE },
-       { "static-supers",     true,  OPT_STATIC_SUPERS },
-       { "no-dynamic",        false, OPT_NO_DYNAMIC },
-
-       /* JVMTI Agent Command Line Options */
-#ifdef ENABLE_JVMTI
-       { "agentlib:",         true,  OPT_AGENTLIB },
-       { "agentpath:",        true,  OPT_AGENTPATH },
-#endif
-
-       /* X options */
-
-       { "X",                 false, OPT_X },
-       { "Xjit",              false, OPT_JIT },
-       { "Xint",              false, OPT_INTRP },
-       { "Xbootclasspath:",   true,  OPT_BOOTCLASSPATH },
-       { "Xbootclasspath/a:", true,  OPT_BOOTCLASSPATH_A },
-       { "Xbootclasspath/p:", true,  OPT_BOOTCLASSPATH_P },
-#ifdef ENABLE_JVMTI
-       { "Xdebug",            false, OPT_DEBUG },
-#endif 
-       { "Xms",               true,  OPT_MS },
-       { "Xmx",               true,  OPT_MX },
-       { "Xss",               true,  OPT_SS },
-       { "ms",                true,  OPT_MS },
-       { "mx",                true,  OPT_MX },
-       { "ss",                true,  OPT_SS },
-
-       /* keep these at the end of the list */
 
-       { "i",                 true,  OPT_INLINING },
-       { "m",                 true,  OPT_METHOD },
-       { "s",                 true,  OPT_SHOW },
-
-       { NULL,                false, 0 }
-};
-
-
-/* usage ***********************************************************************
-
-   Prints the correct usage syntax to stdout.
-
-*******************************************************************************/
+#include <assert.h>
 
-static void usage(void)
-{
-       printf("Usage: cacao [-options] classname [arguments]\n");
-       printf("               (to run a class file)\n");
-       printf("       cacao [-options] -jar jarfile [arguments]\n");
-       printf("               (to run a standalone jar file)\n\n");
-
-       printf("Java 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("    -D<name>=<value>         add an entry to the property list\n");
-       printf("    -verbose[:class|gc|jni]  enable specific verbose output\n");
-       printf("    -version                 print product version and exit\n");
-       printf("    -fullversion             print jpackage-compatible product version and exit\n");
-       printf("    -showversion             print product version and continue\n");
-       printf("    -help, -?                print this help message\n");
-       printf("    -X                       print help on non-standard Java options\n\n");
-
-#ifdef ENABLE_JVMTI
-       printf("    -agentlib:<agent-lib-name>=<options>  library to load containg JVMTI agent\n");
-       printf("    -agentpath:<path-to-agent>=<options>  path to library containg JVMTI agent\n");
+#if defined(ENABLE_LIBJVM)
+# include <ltdl.h>
 #endif
 
-       printf("CACAO options:\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");
-#if defined(STATISTICS)
-       printf("    -stat                    detailed compiler statistics\n");
-#endif
-       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("           e(xceptionstubs)  show disassembled exception stubs (only with -sa)\n");
-       printf("           i(ntermediate)    show intermediate representation\n");
-       printf("           m(ethods)         show class fields and methods\n");
-       printf("           n(ative)          show disassembled native stubs\n");
-       printf("           u(tf)             show the utf - hash\n");
-       printf("    -i     n(line)           activate inlining\n");
-       printf("           v(irtual)         inline virtual methods (uses/turns rt option on)\n");
-       printf("           e(exception)      inline methods with exceptions\n");
-       printf("           p(aramopt)        optimize argument renaming\n");
-       printf("           o(utsiders)       inline methods of foreign classes\n");
-#ifdef STATIC_ANALYSIS
-       printf("    -rt                      use rapid type analysis\n");
-       printf("    -xta                     use x type analysis\n");
-       printf("    -vta                     use variable type analysis\n");
+#if defined(WITH_JRE_LAYOUT)
+# include <errno.h>
+# include <libgen.h>
+# include <unistd.h>
 #endif
-#ifdef LSRA
-       printf("    -lsra                    use linear scan register allocation\n");
-#endif
-
-       /* exit with error code */
-
-       exit(1);
-}   
-
-
-static void Xusage(void)
-{
-#if defined(ENABLE_JIT)
-       printf("    -Xjit             JIT mode execution (default)\n");
-#endif
-#if defined(ENABLE_INTRP)
-       printf("    -Xint             interpreter mode execution\n");
-#endif
-       printf("    -Xbootclasspath:<zip/jar files and directories separated by :>\n");
-    printf("                      value is set as bootstrap class path\n");
-       printf("    -Xbootclasspath/a:<zip/jar files and directories separated by :>\n");
-       printf("                      value is appended to the bootstrap class path\n");
-       printf("    -Xbootclasspath/p:<zip/jar files and directories separated by :>\n");
-       printf("                      value is prepended to the bootstrap class path\n");
-       printf("    -Xms<size>        set the initial size of the heap (default: 2MB)\n");
-       printf("    -Xmx<size>        set the maximum size of the heap (default: 64MB)\n");
-       printf("    -Xss<size>        set the thread stack size (default: 128kB)\n");
-#if defined(ENABLE_JVMTI)
-       printf("    -Xdebug<transport> enable remote debugging\n");
-#endif 
-
-       /* exit with error code */
 
-       exit(1);
-}   
-
-
-/* version *********************************************************************
-
-   Only prints cacao version information.
-
-*******************************************************************************/
-
-static void version(void)
-{
-       printf("java version \""JAVA_VERSION"\"\n");
-       printf("CACAO version "VERSION"\n");
-
-       printf("Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,\n");
-       printf("R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,\n");
-       printf("C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,\n");
-       printf("Institut f. Computersprachen - TU Wien\n\n");
-
-       printf("This program is free software; you can redistribute it and/or\n");
-       printf("modify it under the terms of the GNU General Public License as\n");
-       printf("published by the Free Software Foundation; either version 2, or (at\n");
-       printf("your option) any later version.\n\n");
-
-       printf("This program is distributed in the hope that it will be useful, but\n");
-       printf("WITHOUT ANY WARRANTY; without even the implied warranty of\n");
-       printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU\n");
-       printf("General Public License for more details.\n");
-}
-
-
-/* fullversion *****************************************************************
-
-   Prints a Sun compatible version information (required e.g. by
-   jpackage, www.jpackage.org).
-
-*******************************************************************************/
-
-static void fullversion(void)
-{
-       printf("java full version \"cacao-"JAVA_VERSION"\"\n");
-
-       /* exit normally */
-
-       exit(0);
-}
-
-
-#ifdef TYPECHECK_STATISTICS
-void typecheck_print_statistics(FILE *file);
-#endif
+#include <stdlib.h>
+#include <string.h>
 
-/* setup_debugger_process *****************************************************
+#include "vm/types.h"
 
-   Helper function to start JDWP threads
+#include "native/jni.h"
 
-*******************************************************************************/
 #if defined(ENABLE_JVMTI)
-
-static void setup_debugger_process(char* transport) {
-       java_objectheader *o;
-       methodinfo *m;
-       java_lang_String  *s;
-
-       /* new gnu.classpath.jdwp.Jdwp() */
-       mainclass = 
-               load_class_from_sysloader(utf_new_char("gnu.classpath.jdwp.Jdwp"));
-       if (!mainclass)
-               throw_main_exception_exit();
-
-       o = builtin_new(mainclass);
-
-       if (!o)
-               throw_main_exception_exit();
-       
-       m = class_resolveclassmethod(mainclass,
-                                                                utf_init, 
-                                                                utf_java_lang_String__void,
-                                                                class_java_lang_Object,
-                                                                true);
-       if (!m)
-               throw_main_exception_exit();
-
-       asm_calljavafunction(m, o, NULL, NULL, NULL);
-
-       /* configure(transport,NULL) */
-       m = class_resolveclassmethod(
-               mainclass, utf_new_char("configure"), 
-               utf_new_char("(Ljava/lang/String;Ljava/lang/Thread;)V"),
-               class_java_lang_Object,
-               false);
-
-
-       s = javastring_new_char(transport);
-       asm_calljavafunction(m, o, s, NULL, NULL);
-       if (!m)
-               throw_main_exception_exit();
-
-       /* _doInitialization */
-       m = class_resolveclassmethod(mainclass,
-                                                                utf_new_char("_doInitialization"), 
-                                                                utf_new_char("()V"),
-                                                                mainclass,
-                                                                false);
-       
-       if (!m)
-               throw_main_exception_exit();
-
-       asm_calljavafunction(m, o, NULL, NULL, NULL);
-}
+# include "native/jvmti/jvmti.h"
+# include "native/jvmti/cacaodbg.h"
 #endif
 
-
-/* getmainclassfromjar *********************************************************
-
-   Gets the name of the main class form a JAR's manifest file.
-
-*******************************************************************************/
-
-static char *getmainclassnamefromjar(char *mainstring)
-{
-       classinfo         *c;
-       java_objectheader *o;
-       methodinfo        *m;
-       java_lang_String  *s;
-
-       c = load_class_from_sysloader(utf_new_char("java/util/jar/JarFile"));
-
-       if (!c)
-               throw_main_exception_exit();
-       
-       /* create JarFile object */
-
-       o = builtin_new(c);
-
-       if (!o)
-               throw_main_exception_exit();
-
-
-       m = class_resolveclassmethod(c,
-                                                                utf_init, 
-                                                                utf_java_lang_String__void,
-                                                                class_java_lang_Object,
-                                                                true);
-
-       if (!m)
-               throw_main_exception_exit();
-
-       s = javastring_new_char(mainstring);
-
-       asm_calljavafunction(m, o, s, NULL, NULL);
-
-       if (*exceptionptr)
-               throw_main_exception_exit();
-
-       /* get manifest object */
-
-       m = class_resolveclassmethod(c,
-                                                                utf_new_char("getManifest"), 
-                                                                utf_new_char("()Ljava/util/jar/Manifest;"),
-                                                                class_java_lang_Object,
-                                                                true);
-
-       if (!m)
-               throw_main_exception_exit();
-
-       o = asm_calljavafunction(m, o, NULL, NULL, NULL);
-
-       if (!o) {
-               fprintf(stderr, "Could not get manifest from %s (invalid or corrupt jarfile?)\n", mainstring);
-               cacao_exit(1);
-       }
-
-
-       /* get Main Attributes */
-
-       m = class_resolveclassmethod(o->vftbl->class,
-                                                                utf_new_char("getMainAttributes"), 
-                                                                utf_new_char("()Ljava/util/jar/Attributes;"),
-                                                                class_java_lang_Object,
-                                                                true);
-
-       if (!m)
-               throw_main_exception_exit();
-
-       o = asm_calljavafunction(m, o, NULL, NULL, NULL);
-
-       if (!o) {
-               fprintf(stderr, "Could not get main attributes from %s (invalid or corrupt jarfile?)\n", mainstring);
-               cacao_exit(1);
-       }
+#include "vm/vm.h"
 
 
-       /* get property Main-Class */
+/* forward declarations *******************************************************/
 
-       m = class_resolveclassmethod(o->vftbl->class,
-                                                                utf_new_char("getValue"), 
-                                                                utf_new_char("(Ljava/lang/String;)Ljava/lang/String;"),
-                                                                class_java_lang_Object,
-                                                                true);
-
-       if (!m)
-               throw_main_exception_exit();
-
-       s = javastring_new_char("Main-Class");
-
-       o = asm_calljavafunction(m, o, s, NULL, NULL);
-
-       if (!o)
-               throw_main_exception_exit();
-
-       return javastring_tochar(o);
-}
-
-
-void exit_handler(void);
+static JavaVMInitArgs *cacao_options_prepare(int argc, char **argv);
 
 
 /* main ************************************************************************
@@ -609,897 +67,117 @@ void exit_handler(void);
 
 int main(int argc, char **argv)
 {
-       s4 i, j;
-       void *dummy;
-       
-       /* local variables ********************************************************/
-   
-       char logfilename[200] = "";
-       u4 heapmaxsize;
-       u4 heapstartsize;
-       char *cp;
-       s4    cplen;
-       bool startit = true;
-       char *specificmethodname = NULL;
-       char *specificsignature = NULL;
-       bool jar = false;
-#if defined(ENABLE_JVMTI)
-       bool dbg = false;
-       char *transport;
-       int waitval;
+#if defined(ENABLE_LIBJVM) && !defined(WITH_STATIC_CLASSPATH)
+       char           *path;
 #endif
 
+#if defined(ENABLE_LIBJVM)     
+       /* Variables for JNI_CreateJavaVM dlopen call. */
+       lt_dlhandle     libjvm_handle;
+       lt_ptr          libjvm_vm_createjvm;
+       lt_ptr          libjvm_vm_run;
+       const char     *lterror;
 
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
-       stackbottom = &dummy;
+       bool (*vm_createjvm)(JavaVM **, void **, void *);
+       void (*vm_run)(JavaVM *, JavaVMInitArgs *);
 #endif
-       
-       if (atexit(exit_handler))
-               throw_cacao_exception_exit(string_java_lang_InternalError,
-                                                                  "Unable to register exit_handler");
 
-       /* initialize global variables */
+       JavaVM         *vm;                 /* denotes a Java VM                  */
+       JNIEnv         *env;
+       JavaVMInitArgs *vm_args;
 
-       cacao_exiting = false;
+       /* prepare the options */
 
+       vm_args = cacao_options_prepare(argc, argv);
+       
+       /* load and initialize a Java VM, return a JNI interface pointer in env */
 
-       /************ Collect info from the environment ************************/
+#if defined(ENABLE_LIBJVM) && !defined(WITH_STATIC_CLASSPATH)
+# if defined(WITH_JRE_LAYOUT)
+       /* SUN also uses a buffer of 4096-bytes (strace is your friend). */
 
-#if defined(DISABLE_GC)
-       nogc_init(HEAP_MAXSIZE, HEAP_STARTSIZE);
-#endif
+       path = malloc(sizeof(char) * 4096);
 
-       /* set the bootclasspath */
-
-       cp = getenv("BOOTCLASSPATH");
-       if (cp) {
-               bootclasspath = MNEW(char, strlen(cp) + strlen("0"));
-               strcpy(bootclasspath, cp);
-
-       } else {
-               cplen = strlen(CACAO_INSTALL_PREFIX) + strlen(CACAO_VM_ZIP_PATH) +
-                       strlen(":") +
-                       strlen(CLASSPATH_INSTALL_DIR) +
-                       strlen(CLASSPATH_GLIBJ_ZIP_PATH) +
-                       strlen("0");
-
-               bootclasspath = MNEW(char, cplen);
-               strcpy(bootclasspath, CACAO_INSTALL_PREFIX);
-               strcat(bootclasspath, CACAO_VM_ZIP_PATH);
-               strcat(bootclasspath, ":");
-               strcat(bootclasspath, CLASSPATH_INSTALL_DIR);
-               strcat(bootclasspath, CLASSPATH_GLIBJ_ZIP_PATH);
+       if (readlink("/proc/self/exe", path, 4095) == -1) {
+               fprintf(stderr, "main: readlink failed: %s\n", strerror(errno));
+               abort();
        }
 
+       /* get the path of the current executable */
 
-       /* set the classpath */
-
-       cp = getenv("CLASSPATH");
-       if (cp) {
-               classpath = MNEW(char, strlen(cp) + strlen("0"));
-               strcat(classpath, cp);
+       path = dirname(path);
 
-       } else {
-               classpath = MNEW(char, strlen(".") + strlen("0"));
-               strcpy(classpath, ".");
+       if ((strlen(path) + strlen("/../lib/libjvm") + strlen("0")) > 4096) {
+               fprintf(stderr, "main: libjvm name to long for buffer\n");
+               abort();
        }
 
+       /* concatinate the library name */
 
-       /***************** Interpret the command line *****************/
-   
-       checknull = false;
-       opt_noieee = false;
-
-       heapmaxsize = HEAP_MAXSIZE;
-       heapstartsize = HEAP_STARTSIZE;
-       opt_stacksize = STACK_SIZE;
-
-       while ((i = get_opt(argc, argv, opts)) != OPT_DONE) {
-               switch (i) {
-               case OPT_IGNORE:
-                       break;
-                       
-               case OPT_BOOTCLASSPATH:
-                       /* Forget default bootclasspath and set the argument as new boot  */
-                       /* classpath.                                                     */
-                       MFREE(bootclasspath, char, strlen(bootclasspath));
-
-                       bootclasspath = MNEW(char, strlen(opt_arg) + strlen("0"));
-                       strcpy(bootclasspath, opt_arg);
-                       break;
-
-               case OPT_BOOTCLASSPATH_A:
-                       /* append to end of bootclasspath */
-                       cplen = strlen(bootclasspath);
-
-                       bootclasspath = MREALLOC(bootclasspath,
-                                                                        char,
-                                                                        cplen,
-                                                                        cplen + strlen(":") +
-                                                                        strlen(opt_arg) + strlen("0"));
-
-                       strcat(bootclasspath, ":");
-                       strcat(bootclasspath, opt_arg);
-                       break;
-
-               case OPT_BOOTCLASSPATH_P:
-                       /* prepend in front of bootclasspath */
-                       cp = bootclasspath;
-                       cplen = strlen(cp);
-
-                       bootclasspath = MNEW(char, strlen(opt_arg) + strlen(":") +
-                                                                cplen + strlen("0"));
-
-                       strcpy(bootclasspath, opt_arg);
-                       strcat(bootclasspath, ":");
-                       strcat(bootclasspath, cp);
-
-                       MFREE(cp, char, cplen);
-                       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) + strlen("0"));
-                       strcpy(classpath, opt_arg);
-                       break;
-
-               case OPT_JAR:
-                       jar = true;
-                       break;
+       strcat(path, "/../lib/libjvm");
+# else
+       path = CACAO_LIBDIR"/libjvm";
+# endif
 
-#if defined(ENABLE_JVMTI)
-               case OPT_DEBUG:
-                       dbg = true;
-                       transport = opt_arg;
-                       break;
-
-               case OPT_AGENTPATH:
-               case OPT_AGENTLIB:
-                       set_jvmti_phase(JVMTI_PHASE_ONLOAD);
-                       agentload(opt_arg);
-                       set_jvmti_phase(JVMTI_PHASE_PRIMORDIAL);
-                       break;
-#endif
-                       
-               case OPT_D:
-                       {
-                               for (j = 0; j < strlen(opt_arg); j++) {
-                                       if (opt_arg[j] == '=') {
-                                               opt_arg[j] = '\0';
-                                               create_property(opt_arg, opt_arg + j + 1);
-                                               goto didit;
-                                       }
-                               }
-
-                               /* if no '=' is given, just create an empty property */
-                               create_property(opt_arg, "");
-                                       
-                       didit: ;
-                       }       
-                       break;
-
-               case OPT_MX:
-               case OPT_MS:
-               case OPT_SS:
-                       {
-                               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 if (i == OPT_MS)
-                                       heapstartsize = j;
-                               else
-                                       opt_stacksize = 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_VERBOSESPECIFIC:
-                       if (strcmp("class", opt_arg) == 0)
-                               opt_verboseclass = true;
-
-                       else if (strcmp("gc", opt_arg) == 0)
-                               opt_verbosegc = true;
-
-                       else if (strcmp("jni", opt_arg) == 0)
-                               opt_verbosejni = true;
-                       break;
-
-               case OPT_VERBOSEEXCEPTION:
-                       opt_verboseexception = true;
-                       break;
-
-#ifdef TYPECHECK_VERBOSE
-               case OPT_VERBOSETC:
-                       typecheckverbose = true;
-                       break;
-#endif
-                               
-               case OPT_VERBOSECALL:
-                       runverbose = true;
-                       break;
-
-               case OPT_VERSION:
-                       version();
-                       exit(0);
-                       break;
-
-               case OPT_FULLVERSION:
-                       fullversion();
-                       break;
-
-               case OPT_SHOWVERSION:
-                       version();
-                       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;
-                                       
-#if defined(STATISTICS)
-               case OPT_STAT:
-                       opt_stat = true;
-                       break;
-#endif
-                                       
-               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':
-                                       opt_showdisassemble = true;
-                                       compileverbose = true;
-                                       break;
-                               case 'c':
-                                       showconstantpool = true;
-                                       break;
-                               case 'd':
-                                       opt_showddatasegment = true;
-                                       break;
-                               case 'e':
-                                       opt_showexceptionstubs = true;
-                                       break;
-                               case 'i':
-                                       opt_showintermediate = true;
-                                       compileverbose = true;
-                                       break;
-                               case 'm':
-                                       showmethods = true;
-                                       break;
-                               case 'n':
-                                       opt_shownativestub = 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;
-
-#ifdef STATIC_ANALYSIS
-               case OPT_RT:
-                       opt_rt = true; /* default for inlining */
-                       break;
-
-               case OPT_XTA:
-                       opt_xta = true; /* in test currently */
-                       break;
-
-               case OPT_VTA:
-                       printf("\nVTA is not yet available\n");
-                       opt_vta = false;
-                       /***opt_vta = true; not yet **/
-                       break;
-#endif
-
-#ifdef LSRA
-               case OPT_LSRA:
-                       opt_lsra = true;
-                       break;
-#endif
-
-               case OPT_HELP:
-                       usage();
-                       break;
-
-               case OPT_X:
-                       Xusage();
-                       break;
-
-               case OPT_JIT:
-#if defined(ENABLE_JIT)
-                       opt_jit = true;
-#else
-                       printf("-Xjit option not enabled.\n");
-                       exit(1);
-#endif
-                       break;
-
-               case OPT_INTRP:
-#if defined(ENABLE_INTRP)
-                       opt_intrp = true;
-#else
-                       printf("-Xint option not enabled.\n");
-                       exit(1);
-#endif
-                       break;
-
-               case OPT_STATIC_SUPERS:
-                       opt_static_supers = atoi(opt_arg);
-                       break;
-
-               case OPT_NO_DYNAMIC:
-                       opt_no_dynamic = true;
-                       break;
-
-               case OPT_TRACE:
-                       vm_debug = true;
-                       break;
-
-               default:
-                       printf("Unknown option: %s\n", argv[opt_ind]);
-                       usage();
-               }
+       if (lt_dlinit()) {
+               fprintf(stderr, "main: lt_dlinit failed: %s\n", lt_dlerror());
+               abort();
        }
 
-       if (opt_ind >= argc)
-               usage();
-
+       /* First try to open where dlopen searches, e.g. LD_LIBRARY_PATH.
+          If not found, try the absolute path. */
 
-       /* transform dots into slashes in the class name */
+       if (!(libjvm_handle = lt_dlopenext("libjvm"))) {
+               /* save the error message */
 
-       mainstring = argv[opt_ind++];
+               lterror = strdup(lt_dlerror());
 
-       if (!jar) { 
-        /* do not mangle jar filename */
+               if (!(libjvm_handle = lt_dlopenext(path))) {
+                       /* print the first error message too */
 
-               for (i = strlen(mainstring) - 1; i >= 0; i--) {
-                       if (mainstring[i] == '.') mainstring[i] = '/';
-               }
+                       fprintf(stderr, "main: lt_dlopenext failed: %s\n", lterror);
 
-       } else {
-               /* put jarfile in classpath */
+                       /* and now the current one */
 
-               cp = classpath;
+                       fprintf(stderr, "main: lt_dlopenext failed: %s\n", lt_dlerror());
+                       abort();
+               }
 
-               classpath = MNEW(char, strlen(mainstring) + strlen(":") +
-                                                strlen(classpath) + strlen("0"));
+               /* free the error string */
 
-               strcpy(classpath, mainstring);
-               strcat(classpath, ":");
-               strcat(classpath, cp);
-               
-               MFREE(cp, char, strlen(cp));
+               free((void *) lterror);
        }
 
-       /**************************** Program start *****************************/
-
-       log_init(logfilename);
-
-       if (opt_verbose)
-               log_text("CACAO started -------------------------------------------------------");
-
-       /* initialize JavaVM */
-
-       vm_args.version = 0x00010001; /* New in 1.1.2: VM version */
-
-       /* Get the default initialization arguments and set the class path */
-
-       JNI_GetDefaultJavaVMInitArgs(&vm_args);
-
-       vm_args.minHeapSize = heapstartsize;
-       vm_args.maxHeapSize = heapmaxsize;
-
-       vm_args.classpath = classpath;
-       /* load and initialize a Java VM, return a JNI interface pointer in env */
-
-       JNI_CreateJavaVM(&jvm, &env, &vm_args);
-
-#if defined(ENABLE_JVMTI)
-       set_jvmti_phase(JVMTI_PHASE_START);
-#endif
-
-       /* initialize the garbage collector */
-
-       gc_init(heapmaxsize, heapstartsize);
-
-#if defined(ENABLE_INTRP)
-       /* allocate main thread stack */
-
-       if (opt_intrp) {
-               intrp_main_stack = (u1 *) alloca(opt_stacksize);
-               MSET(intrp_main_stack, 0, u1, opt_stacksize);
+       if (!(libjvm_vm_createjvm = lt_dlsym(libjvm_handle, "vm_createjvm"))) {
+               fprintf(stderr, "main: lt_dlsym failed: %s\n", lt_dlerror());
+               abort();
        }
-#endif
-
-       cacao_initializing = true;
-
-#if defined(USE_THREADS)
-#if defined(NATIVE_THREADS)
-       threads_preinit();
-#endif
-       initLocks();
-#endif
-
-       /* initialize the string hashtable stuff: lock (must be done
-          _after_ threads_preinit) */
-
-       if (!string_init())
-               throw_main_exception_exit();
-
-       /* initialize the utf8 hashtable stuff: lock, often used utf8
-          strings (must be done _after_ threads_preinit) */
-
-       if (!utf8_init())
-               throw_main_exception_exit();
-
-       /* initialize the classcache hashtable stuff: lock, hashtable
-          (must be done _after_ threads_preinit) */
-
-       if (!classcache_init())
-               throw_main_exception_exit();
-
-       /* initialize the loader with bootclasspath (must be done _after_
-          thread_preinit) */
-
-       if (!suck_init(bootclasspath))
-               throw_main_exception_exit();
-
-       /* initialize the memory subsystem (must be done _after_
-          threads_preinit) */
-
-       if (!memory_init())
-               throw_main_exception_exit();
-
-       /* initialize the finalizer stuff: lock, linked list (must be done
-          _after_ threads_preinit) */
-
-       if (!finalizer_init())
-               throw_main_exception_exit();
-
-       /* install architecture dependent signal handler used for exceptions */
-
-       signal_init();
-
-       /* initialize the codegen subsystems */
-
-       codegen_init();
-
-       /* initializes jit compiler */
-
-       jit_init();
-
-       /* machine dependent initialization */
-
-       md_init();
-
-       /* initialize the loader subsystems (must be done _after_
-       classcache_init) */
-
-       if (!loader_init((u1 *) &dummy))
-               throw_main_exception_exit();
-
-       if (!linker_init())
-               throw_main_exception_exit();
 
-       if (!native_init())
-               throw_main_exception_exit();
-
-       if (!exceptions_init())
-               throw_main_exception_exit();
-
-       if (!builtin_init())
-               throw_main_exception_exit();
-
-#if defined(USE_THREADS)
-       if (!threads_init((u1 *) &dummy))
-               throw_main_exception_exit();
-#endif
-
-       /* 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 (!initialize_class(class_java_lang_System))
-               throw_main_exception_exit();
-
-       /* JNI init creates a Java object (this means running Java code) */
-
-       if (!jni_init())
-               throw_main_exception_exit();
-
-#if defined(USE_THREADS)
-       /* finally, start the finalizer thread */
-
-       if (!finalizer_start_thread())
-               throw_main_exception_exit();
-#endif
-
-       cacao_initializing = false;
-
-
-       /* start worker routines **************************************************/
-
-       if (startit) {
-               classinfo        *mainclass;    /* java/lang/Class                    */
-               methodinfo       *m;
-               java_objectarray *a; 
-               s4                status;
-
-               /* set return value to OK */
-
-               status = 0;
-
-               if (jar) {
-                       /* open jar file with java.util.jar.JarFile */
-                       mainstring = getmainclassnamefromjar(mainstring);
-               }
-
-               /* load the main class */
-
-               if (!(mainclass = load_class_from_sysloader(utf_new_char(mainstring))))
-                       throw_main_exception_exit();
-
-               /* error loading class, clear exceptionptr for new exception */
-
-               if (*exceptionptr || !mainclass) {
-/*                     *exceptionptr = NULL; */
-
-/*                     *exceptionptr = */
-/*                             new_exception_message(string_java_lang_NoClassDefFoundError, */
-/*                                                                       mainstring); */
-                       throw_main_exception_exit();
-               }
-
-               if (!link_class(mainclass))
-                       throw_main_exception_exit();
-                       
-               /* find the `main' method of the main class */
-
-               m = class_resolveclassmethod(mainclass,
-                                                                        utf_new_char("main"), 
-                                                                        utf_new_char("([Ljava/lang/String;)V"),
-                                                                        class_java_lang_Object,
-                                                                        false);
-
-               if (*exceptionptr) {
-                       throw_main_exception_exit();
-               }
-
-               /* there is no main method or it isn't static */
-
-               if (!m || !(m->flags & ACC_STATIC)) {
-                       *exceptionptr = NULL;
-
-                       *exceptionptr =
-                               new_exception_message(string_java_lang_NoSuchMethodError,
-                                                                         "main");
-                       throw_main_exception_exit();
-               }
-
-               /* build argument array */
-
-               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();
+       vm_createjvm =
+               (bool (*)(JavaVM **, void **, void *)) (ptrint) libjvm_vm_createjvm;
 #endif
-               /*class_showmethods(currentThread->group->header.vftbl->class); */
-
-#if defined(ENABLE_JVMTI) && defined(NATIVE_THREADS)
-               if(dbg) {
-                       debuggee = fork();
-                       if (debuggee == (-1)) {
-                               log_text("fork error");
-                               exit(1);
-                       } else {
-                               if (debuggee == 0) {
-                                       /* child: allow helper process to trace us  */
-                                       if (TRACEME != 0)  exit(0);
-                                       
-                                       /* give parent/helper debugger process control */
-                                       kill(0, SIGTRAP);  /* do we need this at this stage ? */
-
-                                       /* continue with normal startup */      
-
-                               } else {
-
-                                       /* parent/helper debugger process */
-                                       wait(&waitval);
-
-                                       remotedbgjvmtienv = new_jvmtienv();
-                                       /* set eventcallbacks */
-                                       if (JVMTI_ERROR_NONE == 
-                                               remotedbgjvmtienv->
-                                               SetEventCallbacks(remotedbgjvmtienv,
-                                                                                 &jvmti_jdwp_EventCallbacks,
-                                                                                 sizeof(jvmti_jdwp_EventCallbacks))){
-                                               log_text("unable to setup event callbacks");
-                                               cacao_exit(1);                                          
-                                       }
-
-                                       /* setup listening process (JDWP) */
-                                       setup_debugger_process(transport);
-
-                                       /* start to be debugged program */
-                                       CONT(debuggee);
-
-                    /* exit debugger process - todo: cleanup */
-                                       joinAllThreads();
-                                       cacao_exit(0);
-                               }
-                       }
-               }
-               else 
-                       debuggee= -1;
-               
-#endif
-               /* here we go... */
 
-               asm_calljavafunction(m, a, NULL, NULL, NULL);
+       /* create the Java VM */
 
-               /* exception occurred? */
-               if (*exceptionptr) {
-                       throw_main_exception();
-                       status = 1;
-               }
+       (void) vm_createjvm(&vm, (void *) &env, vm_args);
 
-#if defined(USE_THREADS)
-#if defined(NATIVE_THREADS)
-               joinAllThreads();
-#else
-               killThread(currentThread);
-#endif
+#if defined(ENABLE_JVMTI)
+       pthread_mutex_init(&dbgcomlock,NULL);
+       if (jvmti) jvmti_set_phase(JVMTI_PHASE_START);
 #endif
 
-               /* now exit the JavaVM */
-
-/*             (*jvm)->DestroyJavaVM(jvm); */
-
-               cacao_exit(status);
-       }
-
-       /************* If requested, compile all methods ********************/
-
-       if (compileall) {
-               classinfo *c;
-               methodinfo *m;
-               u4 slot;
-               s4 i;
-               classcache_name_entry *nmen;
-               classcache_class_entry *clsen;
-
-               /* create all classes found in the bootclasspath */
-               /* XXX currently only works with zip/jar's */
-
-               loader_load_all_classes();
-
-               /* link all classes */
-
-               for (slot = 0; slot < hashtable_classcache.size; slot++) {
-                       nmen = (classcache_name_entry *) hashtable_classcache.ptr[slot];
-
-                       for (; nmen; nmen = nmen->hashlink) {
-                               /* iterate over all class entries */
-
-                               for (clsen = nmen->classes; clsen; clsen = clsen->next) {
-                                       c = clsen->classobj;
-
-                                       if (!c)
-                                               continue;
-
-                                       if (!(c->state & CLASS_LINKED)) {
-                                               if (!link_class(c)) {
-                                                       fprintf(stderr, "Error linking: ");
-                                                       utf_fprint_classname(stderr, c->name);
-                                                       fprintf(stderr, "\n");
-
-                                                       /* print out exception and cause */
-
-                                                       exceptions_print_exception(*exceptionptr);
-
-                                                       /* goto next class */
-
-                                                       continue;
-                                               }
-                                       }
-
-                                       /* compile all class methods */
-
-                                       for (i = 0; i < c->methodscount; i++) {
-                                               m = &(c->methods[i]);
-
-                                               if (m->jcode) {
-                                                       if (!jit_compile(m)) {
-                                                               fprintf(stderr, "Error compiling: ");
-                                                               utf_fprint_classname(stderr, c->name);
-                                                               fprintf(stderr, ".");
-                                                               utf_fprint(stderr, m->name);
-                                                               utf_fprint(stderr, m->descriptor);
-                                                               fprintf(stderr, "\n");
-
-                                                               /* print out exception and cause */
-
-                                                               exceptions_print_exception(*exceptionptr);
-                                                       }
-                                               }
-                                       }
-                               }
-                       }
-               }
+#if !defined(WITH_STATIC_CLASSPATH) && defined(ENABLE_LIBJVM)
+       if (!(libjvm_vm_run = lt_dlsym(libjvm_handle, "vm_run"))) {
+               fprintf(stderr, "lt_dlsym failed: %s\n", lt_dlerror());
+               abort();
        }
 
+       vm_run = (void (*)(JavaVM *, JavaVMInitArgs *)) (ptrint) libjvm_vm_run;
+#endif
 
-       /******** If requested, compile a specific method ***************/
-
-       if (specificmethodname) {
-               methodinfo *m;
-
-               /* create, load and link the main class */
-
-               if (!(mainclass = load_class_bootstrap(utf_new_char(mainstring))))
-                       throw_main_exception_exit();
-
-               if (!link_class(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);
-               }
+       /* run the VM */
 
-               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);
+       vm_run(vm, vm_args);
 
        /* keep compiler happy */
 
@@ -1507,131 +185,28 @@ int main(int argc, char **argv)
 }
 
 
-/* cacao_exit ******************************************************************
+/* cacao_options_prepare *******************************************************
 
-   Calls java.lang.System.exit(I)V to exit the JavaVM correctly.
+   Prepare the JavaVMInitArgs.
 
 *******************************************************************************/
 
-void cacao_exit(s4 status)
+static JavaVMInitArgs *cacao_options_prepare(int argc, char **argv)
 {
-       methodinfo *m;
-
-       assert(class_java_lang_System);
-       assert(class_java_lang_System->state & CLASS_LOADED);
-
-#if defined(ENABLE_JVMTI)
-       set_jvmti_phase(JVMTI_PHASE_DEAD);
-       agentunload();
-#endif
-
-       if (!link_class(class_java_lang_System))
-               throw_main_exception_exit();
-
-       /* signal that we are exiting */
+       JavaVMInitArgs *vm_args;
+       s4              i;
 
-       cacao_exiting = true;
+       vm_args = malloc(sizeof(JavaVMInitArgs));
 
-       /* call java.lang.System.exit(I)V */
-
-       m = class_resolveclassmethod(class_java_lang_System,
-                                                                utf_new_char("exit"),
-                                                                utf_int__void,
-                                                                class_java_lang_Object,
-                                                                true);
-       
-       if (!m)
-               throw_main_exception_exit();
+       vm_args->version            = JNI_VERSION_1_2;
+       vm_args->nOptions           = argc - 1;
+       vm_args->options            = malloc(sizeof(JavaVMOption) * argc);
+       vm_args->ignoreUnrecognized = JNI_FALSE;
 
-       /* call the exit function with passed exit status */
+       for (i = 1; i < argc; i++)
+               vm_args->options[i - 1].optionString = argv[i];
 
-       /* both inlinevirtual and outsiders not allowed on exit */
-       /*   not sure if permanant or temp restriction          */
-       if (inlinevirtuals) inlineoutsiders = false; 
-
-       asm_calljavafunction(m, (void *) (ptrint) status, 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 defined(ENABLE_JVMTI)
-       agentunload();
-#endif
-
-       if (opt_verbose || getcompilingtime || opt_stat) {
-               log_text("CACAO terminated by shutdown");
-               dolog("Exit status: %d\n", (s4) status);
-       }
-
-       exit(status);
-}
-
-
-/* exit_handler ****************************************************************
-
-   The exit_handler function is called upon program termination.
-
-   ATTENTION: Don't free system resources here! Some threads may still
-   be running as this is called from VMRuntime.exit(). The OS does the
-   cleanup for us.
-
-*******************************************************************************/
-
-void exit_handler(void)
-{
-       /********************* Print debug tables ************************/
-
-#if defined(ENABLE_DEBUG)
-       if (showmethods)
-               class_showmethods(mainclass);
-
-       if (showconstantpool)
-               class_showconstantpool(mainclass);
-
-       if (showutf)
-               utf_show();
-#endif
-
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
-       clear_thread_flags();           /* restores standard file descriptor
-                                      flags */
-#endif
-
-       if (opt_verbose || getcompilingtime || opt_stat) {
-               log_text("CACAO terminated");
-
-#if defined(STATISTICS)
-               if (opt_stat) {
-                       print_stats();
-#ifdef TYPECHECK_STATISTICS
-                       typecheck_print_statistics(get_logfile());
-#endif
-               }
-
-               mem_usagelog(1);
-
-               if (getcompilingtime)
-                       print_times();
-#endif
-       }
-       /* vm_print_profile(stderr);*/
+       return vm_args;
 }