/* src/vm/exceptions.c - exception related functions 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, Institut f. Computersprachen - TU Wien This file is part of CACAO. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. $Id: exceptions.c 8244 2007-07-31 09:30:28Z michi $ */ #include "config.h" #include #include #include #include #include #include #include "vm/types.h" #include "md-abi.h" #include "mm/memory.h" #include "native/jni.h" #include "native/native.h" #include "native/include/java_lang_String.h" #include "native/include/java_lang_Throwable.h" #include "threads/lock-common.h" #include "threads/threads-common.h" #include "toolbox/logging.h" #include "toolbox/util.h" #include "vm/builtin.h" #include "vm/exceptions.h" #include "vm/global.h" #include "vm/stringlocal.h" #include "vm/vm.h" #include "vm/jit/asmpart.h" #include "vm/jit/disass.h" #include "vm/jit/jit.h" #include "vm/jit/methodheader.h" #include "vm/jit/patcher-common.h" #include "vm/jit/stacktrace.h" #include "vmcore/class.h" #include "vmcore/loader.h" #include "vmcore/method.h" #include "vmcore/options.h" #if defined(ENABLE_VMLOG) #include #endif /* for raising exceptions from native methods *********************************/ #if !defined(ENABLE_THREADS) java_objectheader *_no_threads_exceptionptr = NULL; #endif /* init_system_exceptions ****************************************************** Load and link exceptions used in the system. *******************************************************************************/ bool exceptions_init(void) { #if !(defined(__ARM__) && defined(__LINUX__)) /* On arm-linux the first memory page can't be mmap'ed, as it contains the exception vectors. */ int pagesize; /* mmap a memory page at address 0x0, so our hardware-exceptions work. */ pagesize = getpagesize(); (void) memory_mmap_anon(NULL, pagesize, PROT_NONE, MAP_PRIVATE | MAP_FIXED); #endif /* check if we get into trouble with our hardware-exceptions */ if (OFFSET(java_bytearray, data) <= EXCEPTION_HARDWARE_LARGEST) vm_abort("signal_init: array-data offset is less or equal the maximum hardware-exception displacement: %d <= %d", OFFSET(java_bytearray, data), EXCEPTION_HARDWARE_LARGEST); /* java/lang/Throwable */ if (!(class_java_lang_Throwable = load_class_bootstrap(utf_java_lang_Throwable)) || !link_class(class_java_lang_Throwable)) return false; /* java/lang/Error */ if (!(class_java_lang_Error = load_class_bootstrap(utf_java_lang_Error)) || !link_class(class_java_lang_Error)) return false; #if defined(ENABLE_JAVASE) /* java/lang/LinkageError */ if (!(class_java_lang_LinkageError = load_class_bootstrap(utf_java_lang_LinkageError)) || !link_class(class_java_lang_LinkageError)) return false; #endif /* java/lang/NoClassDefFoundError */ if (!(class_java_lang_NoClassDefFoundError = load_class_bootstrap(utf_java_lang_NoClassDefFoundError)) || !link_class(class_java_lang_NoClassDefFoundError)) return false; /* java/lang/OutOfMemoryError */ if (!(class_java_lang_OutOfMemoryError = load_class_bootstrap(utf_java_lang_OutOfMemoryError)) || !link_class(class_java_lang_OutOfMemoryError)) return false; /* java/lang/VirtualMachineError */ if (!(class_java_lang_VirtualMachineError = load_class_bootstrap(utf_java_lang_VirtualMachineError)) || !link_class(class_java_lang_VirtualMachineError)) return false; /* java/lang/Exception */ if (!(class_java_lang_Exception = load_class_bootstrap(utf_java_lang_Exception)) || !link_class(class_java_lang_Exception)) return false; /* java/lang/ClassCastException */ if (!(class_java_lang_ClassCastException = load_class_bootstrap(utf_java_lang_ClassCastException)) || !link_class(class_java_lang_ClassCastException)) return false; /* java/lang/ClassNotFoundException */ if (!(class_java_lang_ClassNotFoundException = load_class_bootstrap(utf_java_lang_ClassNotFoundException)) || !link_class(class_java_lang_ClassNotFoundException)) return false; /* java/lang/NullPointerException */ if (!(class_java_lang_NullPointerException = load_class_bootstrap(utf_java_lang_NullPointerException)) || !link_class(class_java_lang_NullPointerException)) return false; #if defined(WITH_CLASSPATH_GNU) /* java/lang/VMThrowable */ if (!(class_java_lang_VMThrowable = load_class_bootstrap(utf_java_lang_VMThrowable)) || !link_class(class_java_lang_VMThrowable)) return false; #endif return true; } /* exceptions_get_exception **************************************************** Returns the current exception pointer of the current thread. *******************************************************************************/ java_objectheader *exceptions_get_exception(void) { /* return the exception */ return *exceptionptr; } /* exceptions_set_exception **************************************************** Sets the exception pointer of the current thread. *******************************************************************************/ void exceptions_set_exception(java_objectheader *o) { /* set the exception */ *exceptionptr = o; } /* exceptions_clear_exception ************************************************** Clears the current exception pointer of the current thread. *******************************************************************************/ void exceptions_clear_exception(void) { exceptions_set_exception(NULL); } /* exceptions_get_and_clear_exception ****************************************** Gets the exception pointer of the current thread and clears it. This function may return NULL. *******************************************************************************/ java_objectheader *exceptions_get_and_clear_exception(void) { java_objectheader *o; /* get the exception */ o = exceptions_get_exception(); /* and clear the exception */ exceptions_clear_exception(); /* return the exception */ return o; } /* exceptions_new_class ******************************************************** Creates an exception object from the given class and initalizes it. IN: class....class pointer *******************************************************************************/ static java_objectheader *exceptions_new_class(classinfo *c) { java_objectheader *o; o = native_new_and_init(c); if (o == NULL) return exceptions_get_exception(); return o; } /* exceptions_new_utf ********************************************************** Creates an exception object with the given name and initalizes it. IN: classname....class name in UTF-8 *******************************************************************************/ static java_objectheader *exceptions_new_utf(utf *classname) { classinfo *c; java_objectheader *o; c = load_class_bootstrap(classname); if (c == NULL) return exceptions_get_exception(); o = exceptions_new_class(c); return o; } /* exceptions_throw_class ****************************************************** Creates an exception object from the given class, initalizes and throws it. IN: class....class pointer *******************************************************************************/ static void exceptions_throw_class(classinfo *c) { java_objectheader *o; o = exceptions_new_class(c); if (o == NULL) return; exceptions_set_exception(o); } /* exceptions_throw_utf ******************************************************** Creates an exception object with the given name, initalizes and throws it. IN: classname....class name in UTF-8 *******************************************************************************/ static void exceptions_throw_utf(utf *classname) { classinfo *c; c = load_class_bootstrap(classname); if (c == NULL) return; exceptions_throw_class(c); } /* exceptions_throw_utf_throwable ********************************************** Creates an exception object with the given name and initalizes it with the given java/lang/Throwable exception. IN: classname....class name in UTF-8 cause........the given Throwable *******************************************************************************/ static void exceptions_throw_utf_throwable(utf *classname, java_objectheader *cause) { classinfo *c; java_objectheader *o; methodinfo *m; java_lang_Throwable *object; object = (java_lang_Throwable *) cause; c = load_class_bootstrap(classname); if (c == NULL) return; /* create object */ o = builtin_new(c); if (o == NULL) return; /* call initializer */ m = class_resolveclassmethod(c, utf_init, utf_java_lang_Throwable__void, NULL, true); if (m == NULL) return; (void) vm_call_method(m, o, cause); exceptions_set_exception(o); } /* exceptions_throw_utf_exception ********************************************** Creates an exception object with the given name and initalizes it with the given java/lang/Exception exception. IN: classname....class name in UTF-8 exception....the given Exception *******************************************************************************/ static void exceptions_throw_utf_exception(utf *classname, java_objectheader *exception) { classinfo *c; java_objectheader *o; methodinfo *m; c = load_class_bootstrap(classname); if (c == NULL) return; /* create object */ o = builtin_new(c); if (o == NULL) return; /* call initializer */ m = class_resolveclassmethod(c, utf_init, utf_java_lang_Exception__V, NULL, true); if (m == NULL) return; (void) vm_call_method(m, o, exception); exceptions_set_exception(o); } /* exceptions_throw_utf_cause ************************************************** Creates an exception object with the given name and initalizes it with the given java/lang/Throwable exception with initCause. IN: classname....class name in UTF-8 cause........the given Throwable *******************************************************************************/ static void exceptions_throw_utf_cause(utf *classname, java_objectheader *cause) { classinfo *c; java_objectheader *o; methodinfo *m; java_lang_Throwable *object; object = (java_lang_Throwable *) cause; c = load_class_bootstrap(classname); if (c == NULL) return; /* create object */ o = builtin_new(c); if (o == NULL) return; /* call initializer */ m = class_resolveclassmethod(c, utf_init, utf_java_lang_String__void, NULL, true); if (m == NULL) return; (void) vm_call_method(m, o, object->detailMessage); /* call initCause */ m = class_resolveclassmethod(c, utf_initCause, utf_java_lang_Throwable__java_lang_Throwable, NULL, true); if (m == NULL) return; (void) vm_call_method(m, o, cause); exceptions_set_exception(o); } /* exceptions_new_utf_javastring *********************************************** Creates an exception object with the given name and initalizes it with the given java/lang/String message. IN: classname....class name in UTF-8 message......the message as a java.lang.String RETURN VALUE: an exception pointer (in any case -- either it is the newly created exception, or an exception thrown while trying to create it). *******************************************************************************/ static java_objectheader *exceptions_new_utf_javastring(utf *classname, java_objectheader *message) { java_objectheader *o; classinfo *c; c = load_class_bootstrap(classname); if (c == NULL) return exceptions_get_exception(); o = native_new_and_init_string(c, message); if (o == NULL) return exceptions_get_exception(); return o; } /* exceptions_new_class_utf **************************************************** Creates an exception object of the given class and initalizes it. IN: c..........class pointer message....the message as UTF-8 string *******************************************************************************/ static java_objectheader *exceptions_new_class_utf(classinfo *c, utf *message) { java_objectheader *o; java_objectheader *s; s = javastring_new(message); if (s == NULL) return exceptions_get_exception(); o = native_new_and_init_string(c, s); if (o == NULL) return exceptions_get_exception(); return o; } /* exceptions_new_utf_utf ****************************************************** Creates an exception object with the given name and initalizes it with the given utf message. IN: classname....class name in UTF-8 message......the message as an utf * RETURN VALUE: an exception pointer (in any case -- either it is the newly created exception, or an exception thrown while trying to create it). *******************************************************************************/ static java_objectheader *exceptions_new_utf_utf(utf *classname, utf *message) { classinfo *c; java_objectheader *o; c = load_class_bootstrap(classname); if (c == NULL) return exceptions_get_exception(); o = exceptions_new_class_utf(c, message); return o; } /* exceptions_throw_class_utf ************************************************** Creates an exception object of the given class, initalizes and throws it with the given utf message. IN: c..........class pointer message....the message as an UTF-8 *******************************************************************************/ static void exceptions_throw_class_utf(classinfo *c, utf *message) { java_objectheader *o; o = exceptions_new_class_utf(c, message); exceptions_set_exception(o); } /* exceptions_throw_utf_utf **************************************************** Creates an exception object with the given name, initalizes and throws it with the given utf message. IN: classname....class name in UTF-8 message......the message as an utf * *******************************************************************************/ static void exceptions_throw_utf_utf(utf *classname, utf *message) { java_objectheader *o; o = exceptions_new_utf_utf(classname, message); exceptions_set_exception(o); } /* exceptions_new_abstractmethoderror **************************************** Generates a java.lang.AbstractMethodError for the VM. *******************************************************************************/ java_objectheader *exceptions_new_abstractmethoderror(void) { java_objectheader *o; o = exceptions_new_utf(utf_java_lang_AbstractMethodError); return o; } /* exceptions_new_error ******************************************************** Generates a java.lang.Error for the VM. *******************************************************************************/ #if defined(ENABLE_JAVAME_CLDC1_1) static java_objectheader *exceptions_new_error(utf *message) { java_objectheader *o; o = exceptions_new_class_utf(class_java_lang_Error, message); return o; } #endif /* exceptions_asm_new_abstractmethoderror ************************************** Generates a java.lang.AbstractMethodError for asm_abstractmethoderror. *******************************************************************************/ java_objectheader *exceptions_asm_new_abstractmethoderror(u1 *sp, u1 *ra) { stackframeinfo sfi; java_objectheader *e; /* create the stackframeinfo (XPC is equal to RA) */ stacktrace_create_extern_stackframeinfo(&sfi, NULL, sp, ra, ra); /* create the exception */ #if defined(ENABLE_JAVASE) e = exceptions_new_abstractmethoderror(); #else e = exceptions_new_error(utf_java_lang_AbstractMethodError); #endif /* remove the stackframeinfo */ stacktrace_remove_stackframeinfo(&sfi); return e; } /* exceptions_new_arraystoreexception ****************************************** Generates a java.lang.ArrayStoreException for the VM. *******************************************************************************/ java_objectheader *exceptions_new_arraystoreexception(void) { java_objectheader *o; o = exceptions_new_utf(utf_java_lang_ArrayStoreException); return o; } /* exceptions_throw_abstractmethoderror **************************************** Generates and throws a java.lang.AbstractMethodError for the VM. *******************************************************************************/ void exceptions_throw_abstractmethoderror(void) { exceptions_throw_utf(utf_java_lang_AbstractMethodError); } /* exceptions_throw_classcircularityerror ************************************** Generates and throws a java.lang.ClassCircularityError for the classloader. IN: c....the class in which the error was found *******************************************************************************/ void exceptions_throw_classcircularityerror(classinfo *c) { exceptions_throw_utf_utf(utf_java_lang_ClassCircularityError, c->name); } /* exceptions_throw_classformaterror ******************************************* Generates and throws a java.lang.ClassFormatError for the VM. IN: c............the class in which the error was found message......UTF-8 format string *******************************************************************************/ void exceptions_throw_classformaterror(classinfo *c, const char *message, ...) { char *msg; s4 msglen; va_list ap; utf *u; /* calculate message length */ msglen = 0; if (c != NULL) msglen += utf_bytes(c->name) + strlen(" ("); va_start(ap, message); msglen += get_variable_message_length(message, ap); va_end(ap); if (c != NULL) msglen += strlen(")"); msglen += strlen("0"); /* allocate a buffer */ msg = MNEW(char, msglen); /* print message into allocated buffer */ if (c != NULL) { utf_copy_classname(msg, c->name); strcat(msg, " ("); } va_start(ap, message); vsprintf(msg + strlen(msg), message, ap); va_end(ap); if (c != NULL) strcat(msg, ")"); u = utf_new_char(msg); /* free memory */ MFREE(msg, char, msglen); /* throw exception */ exceptions_throw_utf_utf(utf_java_lang_ClassFormatError, u); } /* exceptions_throw_classnotfoundexception ************************************* Generates and throws a java.lang.ClassNotFoundException for the VM. IN: name.........name of the class not found as a utf * *******************************************************************************/ void exceptions_throw_classnotfoundexception(utf *name) { /* we use class here, as this one is rather frequent */ exceptions_throw_class_utf(class_java_lang_ClassNotFoundException, name); } /* exceptions_throw_noclassdeffounderror *************************************** Generates and throws a java.lang.NoClassDefFoundError. IN: name.........name of the class not found as a utf * *******************************************************************************/ void exceptions_throw_noclassdeffounderror(utf *name) { if (vm_initializing) vm_abort("java.lang.NoClassDefFoundError: %s", name->text); exceptions_throw_class_utf(class_java_lang_NoClassDefFoundError, name); } /* exceptions_throw_noclassdeffounderror_cause ********************************* Generates and throws a java.lang.NoClassDefFoundError with the given cause. *******************************************************************************/ void exceptions_throw_noclassdeffounderror_cause(java_objectheader *cause) { exceptions_throw_utf_cause(utf_java_lang_NoClassDefFoundError, cause); } /* exceptions_throw_noclassdeffounderror_wrong_name **************************** Generates and throws a java.lang.NoClassDefFoundError with a specific message: IN: name.........name of the class not found as a utf * *******************************************************************************/ void exceptions_throw_noclassdeffounderror_wrong_name(classinfo *c, utf *name) { char *msg; s4 msglen; utf *u; msglen = utf_bytes(c->name) + strlen(" (wrong name: ") + utf_bytes(name) + strlen(")") + strlen("0"); msg = MNEW(char, msglen); utf_copy_classname(msg, c->name); strcat(msg, " (wrong name: "); utf_cat_classname(msg, name); strcat(msg, ")"); u = utf_new_char(msg); MFREE(msg, char, msglen); exceptions_throw_noclassdeffounderror(u); } /* exceptions_throw_exceptionininitializererror ******************************** Generates and throws a java.lang.ExceptionInInitializerError for the VM. IN: cause......cause exception object *******************************************************************************/ void exceptions_throw_exceptionininitializererror(java_objectheader *cause) { exceptions_throw_utf_throwable(utf_java_lang_ExceptionInInitializerError, cause); } /* exceptions_throw_incompatibleclasschangeerror ******************************* Generates and throws a java.lang.IncompatibleClassChangeError for the VM. IN: message......UTF-8 message format string *******************************************************************************/ void exceptions_throw_incompatibleclasschangeerror(classinfo *c, const char *message) { char *msg; s4 msglen; utf *u; /* calculate exception message length */ msglen = utf_bytes(c->name) + strlen(message) + strlen("0"); /* allocate memory */ msg = MNEW(char, msglen); utf_copy_classname(msg, c->name); strcat(msg, message); u = utf_new_char(msg); /* free memory */ MFREE(msg, char, msglen); /* throw exception */ exceptions_throw_utf_utf(utf_java_lang_IncompatibleClassChangeError, u); } /* exceptions_throw_instantiationerror ***************************************** Generates and throws a java.lang.InstantiationError for the VM. *******************************************************************************/ void exceptions_throw_instantiationerror(classinfo *c) { exceptions_throw_utf_utf(utf_java_lang_InstantiationError, c->name); } /* exceptions_throw_internalerror ********************************************** Generates and throws a java.lang.InternalError for the VM. IN: message......UTF-8 message format string *******************************************************************************/ void exceptions_throw_internalerror(const char *message, ...) { va_list ap; char *msg; s4 msglen; utf *u; /* calculate exception message length */ va_start(ap, message); msglen = get_variable_message_length(message, ap); va_end(ap); /* allocate memory */ msg = MNEW(char, msglen); /* generate message */ va_start(ap, message); vsprintf(msg, message, ap); va_end(ap); u = utf_new_char(msg); /* free memory */ MFREE(msg, char, msglen); /* throw exception */ exceptions_throw_utf_utf(utf_java_lang_InternalError, u); } /* exceptions_throw_linkageerror *********************************************** Generates and throws java.lang.LinkageError with an error message. IN: message......UTF-8 message c............class related to the error. If this is != NULL the name of c is appended to the error message. *******************************************************************************/ void exceptions_throw_linkageerror(const char *message, classinfo *c) { java_objectheader *o; char *msg; s4 msglen; /* calculate exception message length */ msglen = strlen(message) + 1; if (c != NULL) msglen += utf_bytes(c->name); /* allocate memory */ msg = MNEW(char, msglen); /* generate message */ strcpy(msg,message); if (c != NULL) utf_cat_classname(msg, c->name); o = native_new_and_init_string(class_java_lang_LinkageError, javastring_new_from_utf_string(msg)); /* free memory */ MFREE(msg, char, msglen); if (o == NULL) return; exceptions_set_exception(o); } /* exceptions_throw_nosuchfielderror ******************************************* Generates and throws a java.lang.NoSuchFieldError with an error message. IN: c............class in which the field was not found name.........name of the field *******************************************************************************/ void exceptions_throw_nosuchfielderror(classinfo *c, utf *name) { char *msg; s4 msglen; utf *u; /* calculate exception message length */ msglen = utf_bytes(c->name) + strlen(".") + utf_bytes(name) + strlen("0"); /* allocate memory */ msg = MNEW(char, msglen); /* generate message */ utf_copy_classname(msg, c->name); strcat(msg, "."); utf_cat(msg, name); u = utf_new_char(msg); /* free memory */ MFREE(msg, char, msglen); exceptions_throw_utf_utf(utf_java_lang_NoSuchFieldError, u); } /* exceptions_throw_nosuchmethoderror ****************************************** Generates and throws a java.lang.NoSuchMethodError with an error message. IN: c............class in which the method was not found name.........name of the method desc.........descriptor of the method *******************************************************************************/ void exceptions_throw_nosuchmethoderror(classinfo *c, utf *name, utf *desc) { char *msg; s4 msglen; utf *u; /* calculate exception message length */ msglen = utf_bytes(c->name) + strlen(".") + utf_bytes(name) + utf_bytes(desc) + strlen("0"); /* allocate memory */ msg = MNEW(char, msglen); /* generate message */ utf_copy_classname(msg, c->name); strcat(msg, "."); utf_cat(msg, name); utf_cat(msg, desc); u = utf_new_char(msg); /* free memory */ MFREE(msg, char, msglen); #if defined(ENABLE_JAVASE) exceptions_throw_utf_utf(utf_java_lang_NoSuchMethodError, u); #else exceptions_throw_class_utf(class_java_lang_Error, u); #endif } /* exceptions_throw_outofmemoryerror ******************************************* Generates and throws an java.lang.OutOfMemoryError for the VM. *******************************************************************************/ void exceptions_throw_outofmemoryerror(void) { exceptions_throw_class(class_java_lang_OutOfMemoryError); } /* exceptions_throw_unsatisfiedlinkerror *************************************** Generates and throws a java.lang.UnsatisfiedLinkError for the classloader. IN: name......UTF-8 name string *******************************************************************************/ void exceptions_throw_unsatisfiedlinkerror(utf *name) { #if defined(ENABLE_JAVASE) exceptions_throw_utf_utf(utf_java_lang_UnsatisfiedLinkError, name); #else exceptions_throw_class_utf(class_java_lang_Error, name); #endif } /* exceptions_throw_unsupportedclassversionerror ******************************* Generates and throws a java.lang.UnsupportedClassVersionError for the classloader. IN: c............class in which the method was not found message......UTF-8 format string *******************************************************************************/ void exceptions_throw_unsupportedclassversionerror(classinfo *c, u4 ma, u4 mi) { char *msg; s4 msglen; utf *u; /* calculate exception message length */ msglen = utf_bytes(c->name) + strlen(" (Unsupported major.minor version 00.0)") + strlen("0"); /* allocate memory */ msg = MNEW(char, msglen); /* generate message */ utf_copy_classname(msg, c->name); sprintf(msg + strlen(msg), " (Unsupported major.minor version %d.%d)", ma, mi); u = utf_new_char(msg); /* free memory */ MFREE(msg, char, msglen); /* throw exception */ exceptions_throw_utf_utf(utf_java_lang_UnsupportedClassVersionError, u); } /* exceptions_throw_verifyerror ************************************************ Generates and throws a java.lang.VerifyError for the JIT compiler. IN: m............method in which the error was found message......UTF-8 format string *******************************************************************************/ void exceptions_throw_verifyerror(methodinfo *m, const char *message, ...) { va_list ap; char *msg; s4 msglen; utf *u; /* calculate exception message length */ msglen = 0; if (m != NULL) msglen = strlen("(class: ") + utf_bytes(m->class->name) + strlen(", method: ") + utf_bytes(m->name) + strlen(" signature: ") + utf_bytes(m->descriptor) + strlen(") ") + strlen("0"); va_start(ap, message); msglen += get_variable_message_length(message, ap); va_end(ap); /* allocate memory */ msg = MNEW(char, msglen); /* generate message */ if (m != NULL) { strcpy(msg, "(class: "); utf_cat_classname(msg, m->class->name); strcat(msg, ", method: "); utf_cat(msg, m->name); strcat(msg, " signature: "); utf_cat(msg, m->descriptor); strcat(msg, ") "); } va_start(ap, message); vsprintf(msg + strlen(msg), message, ap); va_end(ap); u = utf_new_char(msg); /* free memory */ MFREE(msg, char, msglen); /* throw exception */ exceptions_throw_utf_utf(utf_java_lang_VerifyError, u); } /* exceptions_throw_verifyerror_for_stack ************************************** throws a java.lang.VerifyError for an invalid stack slot type IN: m............method in which the error was found type.........the expected type RETURN VALUE: an exception pointer (in any case -- either it is the newly created exception, or an exception thrown while trying to create it). *******************************************************************************/ void exceptions_throw_verifyerror_for_stack(methodinfo *m, int type) { char *msg; s4 msglen; char *typename; utf *u; /* calculate exception message length */ msglen = 0; if (m != NULL) msglen = strlen("(class: ") + utf_bytes(m->class->name) + strlen(", method: ") + utf_bytes(m->name) + strlen(" signature: ") + utf_bytes(m->descriptor) + strlen(") Expecting to find longest-------typename on stack") + strlen("0"); /* allocate memory */ msg = MNEW(char, msglen); /* generate message */ if (m != NULL) { strcpy(msg, "(class: "); utf_cat_classname(msg, m->class->name); strcat(msg, ", method: "); utf_cat(msg, m->name); strcat(msg, " signature: "); utf_cat(msg, m->descriptor); strcat(msg, ") "); } else { msg[0] = 0; } strcat(msg, "Expecting to find "); switch (type) { case TYPE_INT: typename = "integer"; break; case TYPE_LNG: typename = "long"; break; case TYPE_FLT: typename = "float"; break; case TYPE_DBL: typename = "double"; break; case TYPE_ADR: typename = "object/array"; break; case TYPE_RET: typename = "returnAddress"; break; default: typename = ""; assert(0); break; } strcat(msg, typename); strcat(msg, " on stack"); u = utf_new_char(msg); /* free memory */ MFREE(msg, char, msglen); /* throw exception */ exceptions_throw_utf_utf(utf_java_lang_VerifyError, u); } /* exceptions_new_arithmeticexception ****************************************** Generates a java.lang.ArithmeticException for the JIT compiler. *******************************************************************************/ java_objectheader *exceptions_new_arithmeticexception(void) { java_objectheader *o; o = exceptions_new_utf_utf(utf_java_lang_ArithmeticException, utf_division_by_zero); return o; } /* exceptions_new_arrayindexoutofboundsexception ******************************* Generates a java.lang.ArrayIndexOutOfBoundsException for the VM system. *******************************************************************************/ java_objectheader *exceptions_new_arrayindexoutofboundsexception(s4 index) { java_objectheader *o; methodinfo *m; java_objectheader *s; /* convert the index into a String, like Sun does */ m = class_resolveclassmethod(class_java_lang_String, utf_new_char("valueOf"), utf_new_char("(I)Ljava/lang/String;"), class_java_lang_Object, true); if (m == NULL) return exceptions_get_exception(); s = vm_call_method(m, NULL, index); if (s == NULL) return exceptions_get_exception(); o = exceptions_new_utf_javastring(utf_java_lang_ArrayIndexOutOfBoundsException, s); if (o == NULL) return exceptions_get_exception(); return o; } /* exceptions_throw_arrayindexoutofboundsexception ***************************** Generates and throws a java.lang.ArrayIndexOutOfBoundsException for the VM. *******************************************************************************/ void exceptions_throw_arrayindexoutofboundsexception(void) { exceptions_throw_utf(utf_java_lang_ArrayIndexOutOfBoundsException); } /* exceptions_throw_arraystoreexception **************************************** Generates and throws a java.lang.ArrayStoreException for the VM. *******************************************************************************/ void exceptions_throw_arraystoreexception(void) { exceptions_throw_utf(utf_java_lang_ArrayStoreException); /* e = native_new_and_init(class_java_lang_ArrayStoreException); */ } /* exceptions_new_classcastexception ******************************************* Generates a java.lang.ClassCastException for the JIT compiler. *******************************************************************************/ java_objectheader *exceptions_new_classcastexception(java_objectheader *o) { java_objectheader *e; utf *classname; classname = o->vftbl->class->name; e = exceptions_new_class_utf(class_java_lang_ClassCastException, classname); return e; } /* exceptions_throw_clonenotsupportedexception ********************************* Generates and throws a java.lang.CloneNotSupportedException for the VM. *******************************************************************************/ void exceptions_throw_clonenotsupportedexception(void) { exceptions_throw_utf(utf_java_lang_CloneNotSupportedException); } /* exceptions_throw_illegalaccessexception ************************************* Generates and throws a java.lang.IllegalAccessException for the VM. *******************************************************************************/ void exceptions_throw_illegalaccessexception(utf *message) { exceptions_throw_utf_utf(utf_java_lang_IllegalAccessException, message); } /* exceptions_throw_illegalargumentexception *********************************** Generates and throws a java.lang.IllegalArgumentException for the VM. *******************************************************************************/ void exceptions_throw_illegalargumentexception(void) { exceptions_throw_utf(utf_java_lang_IllegalArgumentException); } /* exceptions_throw_illegalmonitorstateexception ******************************* Generates and throws a java.lang.IllegalMonitorStateException for the VM. *******************************************************************************/ void exceptions_throw_illegalmonitorstateexception(void) { exceptions_throw_utf(utf_java_lang_IllegalMonitorStateException); } /* exceptions_throw_instantiationexception ************************************* Generates and throws a java.lang.InstantiationException for the VM. *******************************************************************************/ void exceptions_throw_instantiationexception(classinfo *c) { exceptions_throw_utf_utf(utf_java_lang_InstantiationException, c->name); } /* exceptions_throw_interruptedexception *************************************** Generates and throws a java.lang.InterruptedException for the VM. *******************************************************************************/ void exceptions_throw_interruptedexception(void) { exceptions_throw_utf(utf_java_lang_InterruptedException); } /* exceptions_throw_invocationtargetexception ********************************** Generates and throws a java.lang.reflect.InvocationTargetException for the VM. IN: cause......cause exception object *******************************************************************************/ void exceptions_throw_invocationtargetexception(java_objectheader *cause) { exceptions_throw_utf_throwable(utf_java_lang_reflect_InvocationTargetException, cause); } /* exceptions_throw_negativearraysizeexception ********************************* Generates and throws a java.lang.NegativeArraySizeException for the VM. *******************************************************************************/ void exceptions_throw_negativearraysizeexception(void) { exceptions_throw_utf(utf_java_lang_NegativeArraySizeException); } /* exceptions_new_nullpointerexception ***************************************** Generates a java.lang.NullPointerException for the VM system. *******************************************************************************/ java_objectheader *exceptions_new_nullpointerexception(void) { java_objectheader *o; o = exceptions_new_class(class_java_lang_NullPointerException); return o; } /* exceptions_throw_nullpointerexception *************************************** Generates a java.lang.NullPointerException for the VM system and throw it in the VM system. *******************************************************************************/ void exceptions_throw_nullpointerexception(void) { exceptions_throw_class(class_java_lang_NullPointerException); } /* exceptions_throw_privilegedactionexception ********************************** Generates and throws a java.security.PrivilegedActionException. *******************************************************************************/ void exceptions_throw_privilegedactionexception(java_objectheader *exception) { exceptions_throw_utf_exception(utf_java_security_PrivilegedActionException, exception); } /* exceptions_throw_stringindexoutofboundsexception **************************** Generates and throws a java.lang.StringIndexOutOfBoundsException for the VM. *******************************************************************************/ void exceptions_throw_stringindexoutofboundsexception(void) { exceptions_throw_utf(utf_java_lang_StringIndexOutOfBoundsException); } /* exceptions_classnotfoundexception_to_noclassdeffounderror ******************* Check the exception for a ClassNotFoundException. If it is one, convert it to a NoClassDefFoundError. *******************************************************************************/ void exceptions_classnotfoundexception_to_noclassdeffounderror(void) { java_objectheader *o; java_objectheader *cause; java_lang_Throwable *object; java_objectheader *s; /* get the cause */ cause = exceptions_get_exception(); /* convert ClassNotFoundException's to NoClassDefFoundError's */ if (builtin_instanceof(cause, class_java_lang_ClassNotFoundException)) { /* clear exception, because we are calling jit code again */ exceptions_clear_exception(); /* create new error */ object = (java_lang_Throwable *) cause; s = (java_objectheader *) object->detailMessage; o = exceptions_new_utf_javastring(utf_java_lang_NoClassDefFoundError, s); /* we had an exception while creating the error */ if (exceptions_get_exception()) return; /* set new exception */ exceptions_set_exception(o); } } /* exceptions_fillinstacktrace ************************************************* Calls the fillInStackTrace-method of the currently thrown exception. *******************************************************************************/ java_objectheader *exceptions_fillinstacktrace(void) { java_objectheader *o; methodinfo *m; /* get exception */ o = exceptions_get_and_clear_exception(); assert(o); /* resolve methodinfo pointer from exception object */ #if defined(ENABLE_JAVASE) m = class_resolvemethod(o->vftbl->class, utf_fillInStackTrace, utf_void__java_lang_Throwable); #elif defined(ENABLE_JAVAME_CLDC1_1) m = class_resolvemethod(o->vftbl->class, utf_fillInStackTrace, utf_void__void); #else #error IMPLEMENT ME! #endif /* call function */ (void) vm_call_method(m, o); /* return exception object */ return o; } /* exceptions_new_hardware_exception ******************************************* Creates the correct exception for a hardware-exception thrown and caught by a signal handler. *******************************************************************************/ java_objectheader *exceptions_new_hardware_exception(u1 *xpc, s4 type, ptrint val) { java_objectheader *e; java_objectheader *o; s4 index; switch (type) { case EXCEPTION_HARDWARE_NULLPOINTER: e = exceptions_new_nullpointerexception(); break; case EXCEPTION_HARDWARE_ARITHMETIC: e = exceptions_new_arithmeticexception(); break; case EXCEPTION_HARDWARE_ARRAYINDEXOUTOFBOUNDS: index = (s4) val; e = exceptions_new_arrayindexoutofboundsexception(index); break; case EXCEPTION_HARDWARE_CLASSCAST: o = (java_objectheader *) val; e = exceptions_new_classcastexception(o); break; case EXCEPTION_HARDWARE_EXCEPTION: e = exceptions_fillinstacktrace(); break; case EXCEPTION_HARDWARE_PATCHER: #if defined(ENABLE_REPLACEMENT) if (replace_me_wrapper(xpc)) { e = NULL; break; } #endif e = patcher_handler(xpc); break; default: /* let's try to get a backtrace */ codegen_get_pv_from_pc(xpc); /* if that does not work, print more debug info */ log_println("exceptions_new_hardware_exception: unknown exception type %d", type); #if SIZEOF_VOID_P == 8 log_println("PC=0x%016lx", xpc); #else log_println("PC=0x%08x", xpc); #endif #if defined(ENABLE_DISASSEMBLER) log_println("machine instruction at PC:"); disassinstr(xpc); #endif vm_abort("Exiting..."); /* keep compiler happy */ e = NULL; } /* return the exception object */ return e; } /* exceptions_handle_exception ************************************************* Try to find an exception handler for the given exception and return it. If no handler is found, exit the monitor of the method (if any) and return NULL. IN: xptr.........the exception object xpc..........PC of where the exception was thrown pv...........Procedure Value of the current method sp...........current stack pointer RETURN VALUE: the address of the first matching exception handler, or NULL if no handler was found *******************************************************************************/ #if defined(ENABLE_JIT) u1 *exceptions_handle_exception(java_objectheader *xptr, u1 *xpc, u1 *pv, u1 *sp) { methodinfo *m; codeinfo *code; s4 issync; dseg_exception_entry *ex; s4 exceptiontablelength; s4 i; classref_or_classinfo cr; classinfo *c; #if defined(ENABLE_THREADS) java_objectheader *o; #endif #ifdef __S390__ /* Addresses are 31 bit integers */ # define ADDR_MASK(x) (u1 *)((u4)(x) & 0x7FFFFFFF) #else # define ADDR_MASK(x) (x) #endif xpc = ADDR_MASK(xpc); /* get info from the method header */ code = *((codeinfo **) (pv + CodeinfoPointer)); issync = *((s4 *) (pv + IsSync)); ex = (dseg_exception_entry *) (pv + ExTableStart); exceptiontablelength = *((s4 *) (pv + ExTableSize)); /* Get the methodinfo pointer from the codeinfo pointer. For asm_vm_call_method the codeinfo pointer is NULL. */ m = (code == NULL) ? NULL : code->m; #if !defined(NDEBUG) /* print exception trace */ if (opt_verbose || opt_verbosecall || opt_TraceExceptions) builtin_trace_exception(xptr, m, xpc, 1); #endif #if defined(ENABLE_VMLOG) vmlog_cacao_throw(xptr); #endif for (i = 0; i < exceptiontablelength; i++) { /* ATTENTION: keep this here, as we need to decrement the pointer before the loop executes! */ ex--; /* If the start and end PC is NULL, this means we have the special case of asm_vm_call_method. So, just return the proper exception handler. */ if ((ex->startpc == NULL) && (ex->endpc == NULL)) return (u1 *) (ptrint) &asm_vm_call_method_exception_handler; /* is the xpc is the current catch range */ if ((ADDR_MASK(ex->startpc) <= xpc) && (xpc < ADDR_MASK(ex->endpc))) { cr = ex->catchtype; /* NULL catches everything */ if (cr.any == NULL) { #if !defined(NDEBUG) /* Print stacktrace of exception when caught. */ #if defined(ENABLE_VMLOG) vmlog_cacao_catch(xptr); #endif if (opt_TraceExceptions) { exceptions_print_exception(xptr); stacktrace_print_trace(xptr); } #endif return ex->handlerpc; } /* resolve or load/link the exception class */ if (IS_CLASSREF(cr)) { /* The exception class reference is unresolved. */ /* We have to do _eager_ resolving here. While the class of */ /* the exception object is guaranteed to be loaded, it may */ /* well have been loaded by a different loader than the */ /* defining loader of m's class, which is the one we must */ /* use to resolve the catch class. Thus lazy resolving */ /* might fail, even if the result of the resolution would */ /* be an already loaded class. */ c = resolve_classref_eager(cr.ref); if (c == NULL) { /* Exception resolving the exception class, argh! */ return NULL; } /* Ok, we resolved it. Enter it in the table, so we don't */ /* have to do this again. */ /* XXX this write should be atomic. Is it? */ ex->catchtype.cls = c; } else { c = cr.cls; /* XXX I don't think this case can ever happen. -Edwin */ if (!(c->state & CLASS_LOADED)) /* use the methods' classloader */ if (!load_class_from_classloader(c->name, m->class->classloader)) return NULL; /* XXX I think, if it is not linked, we can be sure that */ /* the exception object is no (indirect) instance of it, no? */ /* -Edwin */ if (!(c->state & CLASS_LINKED)) if (!link_class(c)) return NULL; } /* is the thrown exception an instance of the catch class? */ if (builtin_instanceof(xptr, c)) { #if !defined(NDEBUG) /* Print stacktrace of exception when caught. */ #if defined(ENABLE_VMLOG) vmlog_cacao_catch(xptr); #endif if (opt_TraceExceptions) { exceptions_print_exception(xptr); stacktrace_print_trace(xptr); } #endif return ex->handlerpc; } } } #if defined(ENABLE_THREADS) /* is this method synchronized? */ if (issync) { /* get synchronization object */ # if (defined(__MIPS__) && (SIZEOF_VOID_P == 4)) || defined(__I386__) /* XXX change this if we ever want to use 4-byte stackslots */ o = *((java_objectheader **) (sp + issync - 8)); # else o = *((java_objectheader **) (sp + issync - SIZEOF_VOID_P)); #endif assert(o != NULL); lock_monitor_exit(o); } #endif /* none of the exceptions catch this one */ #if defined(ENABLE_VMLOG) vmlog_cacao_unwnd_method(m); #endif return NULL; } #endif /* defined(ENABLE_JIT) */ /* exceptions_print_exception ************************************************** Prints an exception, the detail message and the cause, if available, with CACAO internal functions to stdout. *******************************************************************************/ void exceptions_print_exception(java_objectheader *xptr) { java_lang_Throwable *t; #if defined(ENABLE_JAVASE) java_lang_Throwable *cause; #endif utf *u; t = (java_lang_Throwable *) xptr; if (t == NULL) { puts("NULL\n"); return; } #if defined(ENABLE_JAVASE) cause = t->cause; #endif /* print the root exception */ utf_display_printable_ascii_classname(t->header.vftbl->class->name); if (t->detailMessage != NULL) { u = javastring_toutf((java_objectheader *) t->detailMessage, false); printf(": "); utf_display_printable_ascii(u); } putc('\n', stdout); #if defined(ENABLE_JAVASE) /* print the cause if available */ if ((cause != NULL) && (cause != t)) { printf("Caused by: "); utf_display_printable_ascii_classname(cause->header.vftbl->class->name); if (cause->detailMessage != NULL) { u = javastring_toutf((java_objectheader *) cause->detailMessage, false); printf(": "); utf_display_printable_ascii(u); } putc('\n', stdout); } #endif } /* exceptions_print_current_exception ****************************************** Prints the current pending exception, the detail message and the cause, if available, with CACAO internal functions to stdout. *******************************************************************************/ void exceptions_print_current_exception(void) { java_objectheader *o; o = exceptions_get_exception(); exceptions_print_exception(o); } /* exceptions_print_stacktrace ************************************************* Prints a pending exception with Throwable.printStackTrace(). If there happens an exception during printStackTrace(), we print the thrown exception and the original one. NOTE: This function calls Java code. *******************************************************************************/ void exceptions_print_stacktrace(void) { java_objectheader *oxptr; java_objectheader *xptr; classinfo *c; methodinfo *m; /* get original exception */ oxptr = exceptions_get_and_clear_exception(); if (oxptr == NULL) vm_abort("exceptions_print_stacktrace: no exception thrown"); /* clear exception, because we are calling jit code again */ c = oxptr->vftbl->class; /* find the printStackTrace() method */ m = class_resolveclassmethod(c, utf_printStackTrace, utf_void__void, class_java_lang_Object, false); if (m == NULL) vm_abort("exceptions_print_stacktrace: printStackTrace()V not found"); /* print compatibility message */ fprintf(stderr, "Exception in thread \"main\" "); /* print the stacktrace */ (void) vm_call_method(m, oxptr); /* This normally means, we are EXTREMLY out of memory or have a serious problem while printStackTrace. But may be another exception, so print it. */ xptr = exceptions_get_exception(); if (xptr != NULL) { fprintf(stderr, "Exception while printStackTrace(): "); /* now print original exception */ exceptions_print_exception(xptr); stacktrace_print_trace(xptr); /* now print original exception */ fprintf(stderr, "Original exception was: "); exceptions_print_exception(oxptr); stacktrace_print_trace(oxptr); } fflush(stderr); } /* * These are local overrides for various environment variables in Emacs. * Please do not remove this and leave it at the end of the file, where * Emacs will automagically detect them. * --------------------------------------------------------------------- * Local variables: * mode: c * indent-tabs-mode: t * c-basic-offset: 4 * tab-width: 4 * End: * vim:noexpandtab:sw=4:ts=4: */