* Removed all Id tags.
[cacao.git] / src / cacao / cacao.c
index 46bb37c41eb749a2bc40dd0a3b037d1f135e6be0..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 2211 2005-04-04 10:39:36Z christian $
+   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"
-#include "toolbox/logging.h"
-#include "vm/exceptions.h"
-#include "vm/global.h"
-#include "vm/initialize.h"
-#include "vm/loader.h"
-#include "vm/options.h"
-#include "vm/statistics.h"
-#include "vm/stringlocal.h"
-#include "vm/tables.h"
-#include "vm/classcache.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                    */
-
-
-/* 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    */
-
-
-bool cacao_initializing;
-
-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_VERBOSEGC        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
-
-
-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 },
-#if defined(STATISTICS)
-       { "stat",              false, OPT_STAT },
-#endif
-       { "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 },
-#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 },
-       { "Xbootclasspath:",   true,  OPT_BOOTCLASSPATH },
-       { "Xbootclasspath/a:", true,  OPT_BOOTCLASSPATH_A },
-       { "Xbootclasspath/p:", true,  OPT_BOOTCLASSPATH_P },
-       { "version",           false, OPT_VERSION },
-       { NULL,                false, 0 }
-};
-
-
-/******************** interne Function: print_usage ************************
-
-Prints the correct usage syntax to stdout.
-
-***************************************************************************/
+#include <assert.h>
 
-static void usage()
-{
-       printf("Usage: cacao [options] classname [program arguments]\n\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("    -jar jarfile             execute a jar file\n");
-       printf("    -D<name>=<value>         add an entry to the property list\n");
-       printf("    -Xmx<size>[kK|mM]        specify the size for the heap\n");
-       printf("    -Xms<size>[kK|mM]        specify the initial size for the heap\n");
-       printf("    -mx<size>[kK|mM]         specify the size for the heap\n");
-       printf("    -ms<size>[kK|mM]         specify the initial size for the heap\n");
-       printf("    -Xbootclasspath:<path>   set search path for bootstrap classes and resources\n");
-       printf("    -Xbootclasspath/a:<path> append to end of bootstrap class path\n");
-       printf("    -Xbootclasspath/p:<path> prepend in front of bootstrap class path\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
-       printf("    -version                 print product version and exit\n");
-#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");
+#if defined(ENABLE_LIBJVM)
+# include <ltdl.h>
 #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("                 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");
-#ifdef STATIC_ANALYSIS
-       printf("          -rt .................. use rapid type analysis\n");
-       printf("          -xta ................. use x type analysis\n");
-       printf("          -vta ................. use variable type analysis\n");
-#endif
-#ifdef LSRA
-       printf("          -lsra ................ use linear scan register allocation\n");
-#endif
-
-       /* exit with error code */
-
-       exit(1);
-}   
-
-
-/* version *********************************************************************
-
-   Only prints cacao version information and exits.
-
-*******************************************************************************/
-
-static void version()
-{
-       printf("cacao "VERSION"\n");
-       exit(0);
-}
 
-
-#ifdef TYPECHECK_STATISTICS
-void typecheck_print_statistics(FILE *file);
+#if defined(WITH_JRE_LAYOUT)
+# include <errno.h>
+# include <libgen.h>
+# include <unistd.h>
 #endif
 
+#include <stdlib.h>
+#include <string.h>
 
+#include "vm/types.h"
 
-/* getmainclassfromjar ************************************************************
-
-   gets the name of the main class form a jar's manifest file
-
-**********************************************************************************/
-
-char *getmainclassnamefromjar(JNIEnv *env, char *mainstring)
-{
-       jclass class;
-       jmethodID mid;
-       jobject obj;
-               
-       class = (*env)->FindClass(env, "java/util/jar/JarFile");
-       if (class == NULL) {
-               log_text("unable to find java.util.jar.JarFile");
-               throw_main_exception_exit();
-       }
-       
-       mid = (*env)->GetMethodID(NULL, class, "<init>","(Ljava/lang/String;)V");
-       if (mid == NULL) {
-               log_text("unable to find constructor in java.util.jar.JarFile");
-               cacao_exit(1);
-       }
-
-       /* open jarfile */
-       obj = (*env)->NewObject(NULL,class,mid,((*env)->NewStringUTF(NULL,(char*)mainstring)));
-       if ((*env)->ExceptionOccurred(NULL) != NULL) {
-               (*env)->ExceptionDescribe(NULL);
-               cacao_exit(1);
-       }
-       
-       mid = (*env)->GetMethodID(NULL, class, "getManifest","()Ljava/util/jar/Manifest;");
-       if (mid == NULL) {
-               log_text("unable to find getMainfest method");
-               cacao_exit(1);
-       }
-
-       /* get manifest object */
-       obj = (*env)->CallObjectMethod(NULL,obj,mid);
-       if ((*env)->ExceptionOccurred(NULL) != NULL) {
-               (*env)->ExceptionDescribe(NULL);
-               cacao_exit(1);
-       }
-
-       mid = (*env)->GetMethodID(NULL, (jclass)((java_objectheader*) obj)->vftbl->class, "getMainAttributes","()Ljava/util/jar/Attributes;");
-       if (mid == NULL) {
-               log_text("unable to find getMainAttributes method");
-               cacao_exit(1);
-       }
-
-       /* get Main Attributes */
-       obj = (*env)->CallObjectMethod(NULL,obj,mid);
-       if ((*env)->ExceptionOccurred(NULL) != NULL) {
-               (*env)->ExceptionDescribe(NULL);
-               cacao_exit(1);
-       }
-
-
-       mid = (*env)->GetMethodID(NULL, (jclass)((java_objectheader*) obj)->vftbl->class, "getValue","(Ljava/lang/String;)Ljava/lang/String;");
-       if (mid == NULL) {
-               log_text("unable to find getValue method");
-               cacao_exit(1);
-       }
-
-       /* get property Main-Class */
-       obj = (*env)->CallObjectMethod(NULL,obj,mid,(*env)->NewStringUTF(NULL,"Main-Class"));
-       if ((*env)->ExceptionOccurred(NULL) != NULL) {
-               (*env)->ExceptionDescribe(NULL);
-               cacao_exit(1);
-       }
-       
-       return javastring_tochar((java_objectheader *) obj);
-}
-
+#include "native/jni.h"
 
-/*
- * 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 */
+#if defined(ENABLE_JVMTI)
+# include "native/jvmti/jvmti.h"
+# include "native/jvmti/cacaodbg.h"
 #endif
 
-       /************************ Free all resources *******************/
-
-       loader_close();
-       tables_close();
-
-       MFREE(classpath, u1, strlen(classpath));
+#include "vm/vm.h"
 
-       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
-               }
+/* forward declarations *******************************************************/
 
-               if (getcompilingtime)
-                       print_times();
-               mem_usagelog(1);
-#endif
-       }
-}
+static JavaVMInitArgs *cacao_options_prepare(int argc, char **argv);
 
 
-/************************** Function: main *******************************
+/* 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;
-       u4 heapstartsize;
-       char *cp;
-       s4    cplen;
-       bool startit = true;
-       char *specificmethodname = NULL;
-       char *specificsignature = NULL;
-       bool jar = false;
-
-#if defined(USE_THREADS) && !defined(NATIVE_THREADS)
-       stackbottom = &dummy;
+#if defined(ENABLE_LIBJVM) && !defined(WITH_STATIC_CLASSPATH)
+       char           *path;
 #endif
-       
-       if (atexit(exit_handler))
-               throw_cacao_exception_exit(string_java_lang_InternalError,
-                                                                  "Unable to register exit_handler");
 
+#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;
 
-       /************ Collect info from the environment ************************/
-
-       /* set the bootclasspath */
-
-       cp = getenv("BOOTCLASSPATH");
-       if (cp) {
-               bootclasspath = MNEW(char, strlen(cp) + 1);
-               strcpy(bootclasspath, cp);
-
-       } else {
-#if !defined(WITH_EXTERNAL_CLASSPATH)
-               cplen = strlen(CACAO_INSTALL_PREFIX) + strlen(CACAO_RT_JAR_PATH);
-
-               bootclasspath = MNEW(char, cplen + 1);
-               strcpy(bootclasspath, CACAO_INSTALL_PREFIX);
-               strcat(bootclasspath, CACAO_RT_JAR_PATH);
-#else
-               cplen = strlen(CACAO_INSTALL_PREFIX) + strlen(CACAO_VM_ZIP_PATH) +
-                       strlen(EXTERNAL_CLASSPATH_PREFIX) + strlen(CLASSPATH_GLIBJ_ZIP_PATH);
-
-               bootclasspath = MNEW(char, cplen + 1 + 1);
-               strcpy(bootclasspath, CACAO_INSTALL_PREFIX);
-               strcat(bootclasspath, CACAO_VM_ZIP_PATH);
-               strcat(bootclasspath, ":");
-               strcat(bootclasspath, EXTERNAL_CLASSPATH_PREFIX);
-               strcat(bootclasspath, CLASSPATH_GLIBJ_ZIP_PATH);
+       bool (*vm_createjvm)(JavaVM **, void **, void *);
+       void (*vm_run)(JavaVM *, JavaVMInitArgs *);
 #endif
-       }
 
+       JavaVM         *vm;                 /* denotes a Java VM                  */
+       JNIEnv         *env;
+       JavaVMInitArgs *vm_args;
 
-       /* set the classpath */
+       /* prepare the options */
 
-       cp = getenv("CLASSPATH");
-       if (cp) {
-               classpath = MNEW(char, strlen(cp) + 1);
-               strcat(classpath, cp);
+       vm_args = cacao_options_prepare(argc, argv);
+       
+       /* load and initialize a Java VM, return a JNI interface pointer in env */
 
-       } else {
-               classpath = MNEW(char, 2);
-               strcpy(classpath, ".");
-       }
+#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). */
 
+       path = malloc(sizeof(char) * 4096);
 
-       /***************** Interpret the command line *****************/
-   
-       checknull = false;
-       opt_noieee = false;
-
-       heapmaxsize = HEAP_MAXSIZE;
-       heapstartsize = HEAP_STARTSIZE;
-
-
-       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) + 1);
-                       strcpy(bootclasspath, opt_arg);
-                       break;
-
-               case OPT_BOOTCLASSPATH_A:
-                       /* append to end of bootclasspath */
-                       cplen = strlen(bootclasspath);
-
-                       bootclasspath = MREALLOC(bootclasspath,
-                                                                        char,
-                                                                        cplen,
-                                                                        cplen + 1 + strlen(opt_arg) + 1);
-
-                       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) + 1 + cplen + 1);
-
-                       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) + 1);
-                       strcpy(classpath, opt_arg);
-                       break;
-
-               case OPT_JAR:
-                       jar = true;
-                       break;
-                       
-               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_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_VERSION:
-                       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':
-                                       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;
-
-#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:
-/* #if defined(__I386__) || defined(__ALPHA__) || defined (__X86_64__) || defined(__POWERPC__) */
-                       opt_lsra = true;
-/* #else */
-/*                     printf("LSRA not available for this architecture\n"); */
-/*                     opt_lsra = false; */
-/* #endif */
-                       break;
-#endif
-
-               default:
-                       printf("Unknown option: %s\n", argv[opt_ind]);
-                       usage();
-               }
+       if (readlink("/proc/self/exe", path, 4095) == -1) {
+               fprintf(stderr, "main: readlink failed: %s\n", strerror(errno));
+               abort();
        }
 
-       if (opt_ind >= argc)
-               usage();
-
+       /* get the path of the current executable */
 
-       /* transform dots into slashes in the class name */
+       path = dirname(path);
 
-       mainstring = argv[opt_ind++];
-       if (!jar) { 
-        /* do not mangle jar filename */
-               for (i = strlen(mainstring) - 1; i >= 0; i--) {
-                       if (mainstring[i] == '.') mainstring[i] = '/';
-               }
-
-       } else {
-               /* put jarfile in classpath */
-               cp = classpath;
-               classpath = MNEW(char, strlen(mainstring) + 1 + strlen(classpath) + 1);
-               strcpy(classpath, mainstring);
-               strcat(classpath, ":");
-               strcat(classpath, cp);
-               
-               MFREE(cp, char, strlen(cp));
+       if ((strlen(path) + strlen("/../lib/libjvm") + strlen("0")) > 4096) {
+               fprintf(stderr, "main: libjvm name to long for buffer\n");
+               abort();
        }
 
-       /**************************** 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);
-
-
-       /* initialize the garbage collector */
-
-       gc_init(heapmaxsize, heapstartsize);
-
-       tables_init();
-
-       /* initialize the loader with bootclasspath */
-
-       suck_init(bootclasspath);
-
-       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();
-
-       /* initialize some cacao subsystems */
-
-       utf8_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 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 (!initialize_class(class_java_lang_System))
-               throw_main_exception_exit();
-
-       cacao_initializing = false;
+       /* concatinate the library name */
 
+       strcat(path, "/../lib/libjvm");
+# else
+       path = CACAO_LIBDIR"/libjvm";
+# endif
 
-       /* start worker routines **************************************************/
-
-       if (startit) {
-               classinfo        *mainclass;    /* java/lang/Class                    */
-               methodinfo       *m;
-               java_objectarray *a; 
-               s4                status;
-
-               /* set return value to OK */
+       if (lt_dlinit()) {
+               fprintf(stderr, "main: lt_dlinit failed: %s\n", lt_dlerror());
+               abort();
+       }
 
-               status = 0;
+       /* First try to open where dlopen searches, e.g. LD_LIBRARY_PATH.
+          If not found, try the absolute path. */
 
-               if (jar) {
-                       /* open jar file with java.util.jar.JarFile */
-                       mainstring = getmainclassnamefromjar((JNIEnv *) &env, mainstring);
-               }
+       if (!(libjvm_handle = lt_dlopenext("libjvm"))) {
+               /* save the error message */
 
-               /* load the main class */
+               lterror = strdup(lt_dlerror());
 
-               if (!load_class_from_sysloader(utf_new_char(mainstring),&mainclass))
-                       throw_main_exception_exit();
+               if (!(libjvm_handle = lt_dlopenext(path))) {
+                       /* print the first error message too */
 
-               /* error loading class, clear exceptionptr for new exception */
+                       fprintf(stderr, "main: lt_dlopenext failed: %s\n", lterror);
 
-               if (*exceptionptr || !mainclass) {
-/*                     *exceptionptr = NULL; */
+                       /* and now the current one */
 
-/*                     *exceptionptr = */
-/*                             new_exception_message(string_java_lang_NoClassDefFoundError, */
-/*                                                                       mainstring); */
-                       throw_main_exception_exit();
+                       fprintf(stderr, "main: lt_dlopenext failed: %s\n", lt_dlerror());
+                       abort();
                }
 
-               /* 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);
-
-               /* there is no main method or it isn't static */
-
-               if (*exceptionptr || !m || !(m->flags & ACC_STATIC)) {
-                       *exceptionptr = NULL;
+               /* free the error string */
 
-                       *exceptionptr =
-                               new_exception_message(string_java_lang_NoSuchMethodError,
-                                                                         "main");
-                       throw_main_exception_exit();
-               }
-
-               /* build argument array */
+               free((void *) lterror);
+       }
 
-               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]));
-               }
+       if (!(libjvm_vm_createjvm = lt_dlsym(libjvm_handle, "vm_createjvm"))) {
+               fprintf(stderr, "main: lt_dlsym failed: %s\n", lt_dlerror());
+               abort();
+       }
 
-#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); */
-
-               *threadrootmethod = m;
 
-               /* here we go... */
+       /* create the Java VM */
 
-               asm_calljavafunction(m, a, NULL, NULL, NULL);
+       (void) vm_createjvm(&vm, (void *) &env, vm_args);
 
-               /* exception occurred? */
-               if (*exceptionptr) {
-                       throw_main_exception();
-                       status = 1;
-               }
-
-#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 classpath */
-               /* XXX currently only works with zip/jar's */
-               create_all_classes();
-
-               /* link all classes */
-               for (slot = 0; slot < classcache_hash.size; slot++) {
-                       nmen = (classcache_name_entry *) classcache_hash.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;
-
-                                       assert(c);
-                                       assert(c->loaded);
-                                       /*utf_fprint_classname(stderr,c->name);fprintf(stderr,"\n");*/
-
-                                       if (!c->linked)
-                                               if (!link_class(c))
-                                                       throw_main_exception_exit();
-
-                                       /* compile all class methods */
-                                       for (i = 0; i < c->methodscount; i++) {
-                                               m = &(c->methods[i]);
-                                               if (m->jcode) {
-                                                       /*fprintf(stderr,"    compiling:");utf_fprint(stderr,m->name);fprintf(stderr,"\n");*/
-                                                       (void) jit_compile(m);
-                                               }
-                                       }
-                               }
-                       }
-               }
+#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 (!load_class_bootstrap(utf_new_char(mainstring), &mainclass))
-                       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);
-               }
-
-               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);
-       }
+       /* run the VM */
 
-       cacao_shutdown(0);
+       vm_run(vm, vm_args);
 
        /* keep compiler happy */
 
@@ -1091,67 +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->loaded);
-
-       if (!link_class(class_java_lang_System))
-               throw_main_exception_exit();
-
-       /* 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();
+       JavaVMInitArgs *vm_args;
+       s4              i;
 
-       /* call the exit function with passed exit status */
+       vm_args = malloc(sizeof(JavaVMInitArgs));
 
-       /* both inlinevirtual and outsiders not allowed on exit */
-       /*   not sure if permanant or temp restriction          */
-       if (inlinevirtuals) inlineoutsiders = false; 
+       vm_args->version            = JNI_VERSION_1_2;
+       vm_args->nOptions           = argc - 1;
+       vm_args->options            = malloc(sizeof(JavaVMOption) * argc);
+       vm_args->ignoreUnrecognized = JNI_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 (opt_verbose || getcompilingtime || opt_stat) {
-               log_text("CACAO terminated by shutdown");
-               dolog("Exit status: %d\n", (s4) status);
-       }
+       for (i = 1; i < argc; i++)
+               vm_args->options[i - 1].optionString = argv[i];
 
-       exit(status);
+       return vm_args;
 }