// prims.cc - Code for core of runtime environment.
-/* Copyright (C) 1998, 1999 Cygnus Solutions
+/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation
This file is part of libgcj.
#include <config.h>
+#ifdef USE_WIN32_SIGNALLING
+#include <windows.h>
+#endif /* USE_WIN32_SIGNALLING */
+
+#ifdef USE_WINSOCK
+#undef __INSIDE_CYGWIN__
+#include <winsock.h>
+#endif /* USE_WINSOCK */
+
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <java-signal.h>
#include <java-threads.h>
+#ifdef ENABLE_JVMPI
+#include <jvmpi.h>
+#endif
+
#ifndef DISABLE_GETENV_PROPERTIES
#include <ctype.h>
#include <java-props.h>
#endif // DISABLE_GETENV_PROPERTIES
#include <java/lang/Class.h>
+#include <java/lang/ClassLoader.h>
#include <java/lang/Runtime.h>
#include <java/lang/String.h>
#include <java/lang/Thread.h>
#include <java/lang/ThreadGroup.h>
-#include <java/lang/FirstThread.h>
+#include <gnu/gcj/runtime/FirstThread.h>
#include <java/lang/ArrayIndexOutOfBoundsException.h>
#include <java/lang/ArithmeticException.h>
#include <java/lang/ClassFormatError.h>
-#include <java/lang/ClassCastException.h>
#include <java/lang/NegativeArraySizeException.h>
#include <java/lang/NullPointerException.h>
#include <java/lang/OutOfMemoryError.h>
-#include <java/lang/ArrayStoreException.h>
#include <java/lang/System.h>
#include <java/lang/reflect/Modifier.h>
#include <java/io/PrintStream.h>
#include <ltdl.h>
#endif
-#define ObjectClass _CL_Q34java4lang6Object
-extern java::lang::Class ObjectClass;
-
// We allocate a single OutOfMemoryError exception which we keep
// around for use if we run out of memory.
static java::lang::OutOfMemoryError *no_memory;
// Properties set at compile time.
const char **_Jv_Compiler_Properties;
+// The JAR file to add to the beginning of java.class.path.
+const char *_Jv_Jar_Class_Path;
+
#ifndef DISABLE_GETENV_PROPERTIES
// Property key/value pairs.
property_pair *_Jv_Environment_Properties;
// The name of this executable.
static char * _Jv_execName;
+// Stash the argv pointer to benefit native libraries that need it.
+const char **_Jv_argv;
+int _Jv_argc;
+
+#ifdef ENABLE_JVMPI
+// Pointer to JVMPI notification functions.
+void (*_Jv_JVMPI_Notify_OBJECT_ALLOC) (JVMPI_Event *event);
+void (*_Jv_JVMPI_Notify_THREAD_START) (JVMPI_Event *event);
+void (*_Jv_JVMPI_Notify_THREAD_END) (JVMPI_Event *event);
+#endif
\f
+extern "C" void _Jv_ThrowSignal (void *) __attribute ((noreturn));
+
+// Just like _Jv_Throw, but fill in the stack trace first. Although
+// this is declared extern in order that its name not be mangled, it
+// is not intended to be used outside this file.
+void
+_Jv_ThrowSignal (void *e)
+{
+ java::lang::Throwable *throwable = (java::lang::Throwable *)e;
+ throwable->fillInStackTrace ();
+ _Jv_Throw (throwable);
+}
+
#ifdef HANDLE_SEGV
static java::lang::NullPointerException *nullp;
+
SIGNAL_HANDLER (catch_segv)
{
- MAKE_THROW_FRAME;
- nullp->fillInStackTrace ();
- _Jv_Throw (nullp);
+ MAKE_THROW_FRAME (nullp);
+ _Jv_ThrowSignal (nullp);
}
#endif
#ifdef HANDLE_DIVIDE_OVERFLOW
HANDLE_DIVIDE_OVERFLOW;
#else
- MAKE_THROW_FRAME;
+ MAKE_THROW_FRAME (arithexception);
#endif
- arithexception->fillInStackTrace ();
- _Jv_Throw (arithexception);
+ _Jv_ThrowSignal (arithexception);
}
#endif
jboolean
_Jv_equalUtf8Consts (Utf8Const* a, Utf8Const *b)
{
- register int len;
- register _Jv_ushort *aptr, *bptr;
+ int len;
+ _Jv_ushort *aptr, *bptr;
if (a == b)
return true;
if (a->hash != b->hash)
jint len = str->length();
jint i = 0;
jchar *sptr = _Jv_GetStringChars (str);
- register unsigned char* ptr = (unsigned char*) a->data;
- register unsigned char* limit = ptr + a->length;
+ unsigned char* ptr = (unsigned char*) a->data;
+ unsigned char* limit = ptr + a->length;
for (;; i++, sptr++)
{
int ch = UTF8_GET (ptr, limit);
jint len = str->length();
jint i = 0;
jchar *sptr = _Jv_GetStringChars (str);
- register unsigned char* ptr = (unsigned char*) a->data;
- register unsigned char* limit = ptr + a->length;
+ unsigned char* ptr = (unsigned char*) a->data;
+ unsigned char* limit = ptr + a->length;
for (; n-- > 0; i++, sptr++)
{
int ch = UTF8_GET (ptr, limit);
int
_Jv_strLengthUtf8(char* str, int len)
{
- register unsigned char* ptr;
- register unsigned char* limit;
+ unsigned char* ptr;
+ unsigned char* limit;
int str_length;
ptr = (unsigned char*) str;
static jint
hashUtf8String (char* str, int len)
{
- register unsigned char* ptr = (unsigned char*) str;
- register unsigned char* limit = ptr + len;
+ unsigned char* ptr = (unsigned char*) str;
+ unsigned char* limit = ptr + len;
jint hash = 0;
for (; ptr < limit;)
(java::lang::String::valueOf(bad_index)));
}
-void*
-_Jv_CheckCast (jclass c, jobject obj)
-{
- if (obj != NULL && ! c->isAssignableFrom(obj->getClass()))
- JvThrow (new java::lang::ClassCastException);
- return obj;
-}
-
void
-_Jv_CheckArrayStore (jobject arr, jobject obj)
+_Jv_ThrowNullPointerException ()
{
- if (obj)
- {
- JvAssert (arr != NULL);
- jclass arr_class = arr->getClass();
- JvAssert (arr_class->isArray());
- jclass elt_class = arr_class->getComponentType();
- jclass obj_class = obj->getClass();
- if (! elt_class->isAssignableFrom(obj_class))
- JvThrow (new java::lang::ArrayStoreException);
- }
+ throw new java::lang::NullPointerException ();
}
-\f
-
// Allocate some unscanned memory and throw an exception if no memory.
void *
_Jv_AllocBytesChecked (jsize size)
return r;
}
-// Allocate a new object of class C. SIZE is the size of the object
+// Allocate a new object of class KLASS. SIZE is the size of the object
// to allocate. You might think this is redundant, but it isn't; some
// classes, such as String, aren't of fixed size.
jobject
-_Jv_AllocObject (jclass c, jint size)
+_Jv_AllocObject (jclass klass, jint size)
{
- _Jv_InitClass (c);
+ _Jv_InitClass (klass);
- jobject obj = (jobject) _Jv_AllocObj (size);
- if (! obj)
+ jobject obj = (jobject) _Jv_AllocObj (size, klass);
+ if (__builtin_expect (! obj, false))
JvThrow (no_memory);
- *((_Jv_VTable **) obj) = c->vtable;
// If this class has inherited finalize from Object, then don't
// bother registering a finalizer. We know that finalize() is the
// implementation would look for Object.finalize in Object's method
// table at startup, and then use that information to find the
// appropriate index in the method vector.
- if (c->vtable->method[1] != ObjectClass.vtable->method[1])
+ if (klass->vtable->get_finalizer()
+ != java::lang::Object::class$.vtable->get_finalizer())
_Jv_RegisterFinalizer (obj, _Jv_FinalizeObject);
+#ifdef ENABLE_JVMPI
+ // Service JVMPI request.
+
+ if (__builtin_expect (_Jv_JVMPI_Notify_OBJECT_ALLOC != 0, false))
+ {
+ JVMPI_Event event;
+
+ event.event_type = JVMPI_EVENT_OBJECT_ALLOC;
+ event.env_id = NULL;
+ event.u.obj_alloc.arena_id = 0;
+ event.u.obj_alloc.class_id = (jobjectID) klass;
+ event.u.obj_alloc.is_array = 0;
+ event.u.obj_alloc.size = size;
+ event.u.obj_alloc.obj_id = (jobjectID) obj;
+
+ _Jv_DisableGC ();
+ (*_Jv_JVMPI_Notify_OBJECT_ALLOC) (&event);
+ _Jv_EnableGC ();
+ }
+#endif
+
return obj;
}
jobjectArray
_Jv_NewObjectArray (jsize count, jclass elementClass, jobject init)
{
- if (count < 0)
+ if (__builtin_expect (count < 0, false))
JvThrow (new java::lang::NegativeArraySizeException);
JvAssert (! elementClass->isPrimitive ());
+ // Ensure that elements pointer is properly aligned.
jobjectArray obj = NULL;
- size_t size = (size_t) _Jv_GetArrayElementFromElementType (obj,
- elementClass);
-
- // Check for overflow.
- if ((size_t) count > (SIZE_T_MAX - size) / sizeof (jobject))
- JvThrow (no_memory);
-
+ size_t size = (size_t) elements (obj);
size += count * sizeof (jobject);
- // FIXME: second argument should be "current loader" //
- jclass clas = _Jv_FindArrayClass (elementClass, 0);
+ // FIXME: second argument should be "current loader"
+ jclass klass = _Jv_GetArrayClass (elementClass, 0);
- obj = (jobjectArray) _Jv_AllocArray (size);
- if (! obj)
+ obj = (jobjectArray) _Jv_AllocArray (size, klass);
+ if (__builtin_expect (! obj, false))
JvThrow (no_memory);
- obj->length = count;
- jobject* ptr = elements(obj);
+ // Cast away const.
+ jsize *lp = const_cast<jsize *> (&obj->length);
+ *lp = count;
// We know the allocator returns zeroed memory. So don't bother
// zeroing it again.
if (init)
{
+ jobject *ptr = elements(obj);
while (--count >= 0)
*ptr++ = init;
}
- // Set the vtbl last to avoid problems if the GC happens during the
- // window in this function between the allocation and this
- // assignment.
- *((_Jv_VTable **) obj) = clas->vtable;
return obj;
}
_Jv_NewPrimArray (jclass eltype, jint count)
{
int elsize = eltype->size();
- if (count < 0)
+ if (__builtin_expect (count < 0, false))
JvThrow (new java::lang::NegativeArraySizeException ());
JvAssert (eltype->isPrimitive ());
size_t size = (size_t) _Jv_GetArrayElementFromElementType (dummy, eltype);
// Check for overflow.
- if ((size_t) count > (SIZE_T_MAX - size) / elsize)
+ if (__builtin_expect ((size_t) count >
+ (SIZE_T_MAX - size) / elsize, false))
JvThrow (no_memory);
- __JArray *arr = (__JArray*) _Jv_AllocObj (size + elsize * count);
- if (! arr)
+ jclass klass = _Jv_GetArrayClass (eltype, 0);
+
+ __JArray *arr = (__JArray*) _Jv_AllocObj (size + elsize * count, klass);
+ if (__builtin_expect (! arr, false))
JvThrow (no_memory);
- arr->length = count;
+ // Cast away const.
+ jsize *lp = const_cast<jsize *> (&arr->length);
+ *lp = count;
// Note that we assume we are given zeroed memory by the allocator.
- jclass klass = _Jv_FindArrayClass (eltype, 0);
- // Set the vtbl last to avoid problems if the GC happens during the
- // window in this function between the allocation and this
- // assignment.
- *((_Jv_VTable **) arr) = klass->vtable;
return arr;
}
-jcharArray
-JvNewCharArray (jint length)
-{
- return (jcharArray) _Jv_NewPrimArray (JvPrimClass (char), length);
-}
-
-jbooleanArray
-JvNewBooleanArray (jint length)
-{
- return (jbooleanArray) _Jv_NewPrimArray (JvPrimClass (boolean), length);
-}
-
-jbyteArray
-JvNewByteArray (jint length)
-{
- return (jbyteArray) _Jv_NewPrimArray (JvPrimClass (byte), length);
-}
-
-jshortArray
-JvNewShortArray (jint length)
-{
- return (jshortArray) _Jv_NewPrimArray (JvPrimClass (short), length);
-}
-
-jintArray
-JvNewIntArray (jint length)
-{
- return (jintArray) _Jv_NewPrimArray (JvPrimClass (int), length);
-}
-
-jlongArray
-JvNewLongArray (jint length)
-{
- return (jlongArray) _Jv_NewPrimArray (JvPrimClass (long), length);
-}
-
-jfloatArray
-JvNewFloatArray (jint length)
-{
- return (jfloatArray) _Jv_NewPrimArray (JvPrimClass (float), length);
-}
-
-jdoubleArray
-JvNewDoubleArray (jint length)
-{
- return (jdoubleArray) _Jv_NewPrimArray (JvPrimClass (double), length);
-}
-
jobject
_Jv_NewArray (jint type, jint size)
{
\f
-class _Jv_PrimClass : public java::lang::Class
-{
-public:
- // FIXME: calling convention is weird. If we use the natural types
- // then the compiler will complain because they aren't Java types.
- _Jv_PrimClass (jobject cname, jbyte sig, jint len)
- {
- using namespace java::lang::reflect;
-
- // We must initialize every field of the class. We do this in
- // the same order they are declared in Class.h.
- next = NULL;
- name = _Jv_makeUtf8Const ((char *) cname, -1);
- accflags = Modifier::PUBLIC | Modifier::FINAL;
- superclass = NULL;
- constants.size = 0;
- constants.tags = NULL;
- constants.data = NULL;
- methods = NULL;
- method_count = sig;
- vtable_method_count = 0;
- fields = NULL;
- size_in_bytes = len;
- field_count = 0;
- static_field_count = 0;
- vtable = JV_PRIMITIVE_VTABLE;
- interfaces = NULL;
- loader = NULL;
- interface_count = 0;
- state = 0; // FIXME.
- thread = NULL;
- }
-};
-
-#define DECLARE_PRIM_TYPE(NAME, SIG, LEN) \
- _Jv_PrimClass _Jv_##NAME##Class((jobject) #NAME, (jbyte) SIG, (jint) LEN)
+#define DECLARE_PRIM_TYPE(NAME, SIG, LEN) \
+ _Jv_ArrayVTable _Jv_##NAME##VTable; \
+ java::lang::Class _Jv_##NAME##Class ((jobject) #NAME, \
+ (jbyte) SIG, (jint) LEN, \
+ (jobject) &_Jv_##NAME##VTable);
DECLARE_PRIM_TYPE(byte, 'B', 1);
DECLARE_PRIM_TYPE(short, 'S', 2);
}
case '[':
- return _Jv_FindArrayClass (_Jv_FindClassFromSignature (&sig[1], loader),
- loader);
+ {
+ jclass klass = _Jv_FindClassFromSignature (&sig[1], loader);
+ if (! klass)
+ return NULL;
+ return _Jv_GetArrayClass (klass, loader);
+ }
}
- JvFail ("couldn't understand class signature");
+
return NULL; // Placate compiler.
}
// Command line arguments.
static jobject arg_vec;
-// The primary threadgroup.
-static java::lang::ThreadGroup *main_group;
-
// The primary thread.
static java::lang::Thread *main_thread;
}
}
+#ifdef USE_WIN32_SIGNALLING
+
+extern "C" int* win32_get_restart_frame (void *);
+
+LONG CALLBACK
+win32_exception_handler (LPEXCEPTION_POINTERS e)
+{
+ int* setjmp_buf;
+ if (e->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION)
+ setjmp_buf = win32_get_restart_frame (nullp);
+ else if (e->ExceptionRecord->ExceptionCode == EXCEPTION_INT_DIVIDE_BY_ZERO)
+ setjmp_buf = win32_get_restart_frame (arithexception);
+ else
+ return EXCEPTION_CONTINUE_SEARCH;
+
+ e->ContextRecord->Ebp = setjmp_buf[0];
+ // FIXME: Why does i386-signal.h increment the PC here, do we need to do it?
+ e->ContextRecord->Eip = setjmp_buf[1];
+ // FIXME: Is this the stack pointer? Do we need it?
+ e->ContextRecord->Esp = setjmp_buf[2];
+
+ return EXCEPTION_CONTINUE_EXECUTION;
+}
+
+#endif
+
static void
main_init ()
{
+ // Turn stack trace generation off while creating exception objects.
+ _Jv_InitClass (&java::lang::Throwable::class$);
+ java::lang::Throwable::trace_enabled = 0;
+
INIT_SEGV;
#ifdef HANDLE_FPE
INIT_FPE;
no_memory = new java::lang::OutOfMemoryError;
+ java::lang::Throwable::trace_enabled = 1;
+
#ifdef USE_LTDL
LTDL_SET_PRELOADED_SYMBOLS ();
#endif
- // FIXME: we only want this on POSIX systems.
+#ifdef USE_WINSOCK
+ // Initialise winsock for networking
+ WSADATA data;
+ if (WSAStartup (MAKEWORD (1, 1), &data))
+ MessageBox (NULL, "Error initialising winsock library.", "Error", MB_OK | MB_ICONEXCLAMATION);
+#endif /* USE_WINSOCK */
+
+#ifdef USE_WIN32_SIGNALLING
+ // Install exception handler
+ SetUnhandledExceptionFilter (win32_exception_handler);
+#else
+ // We only want this on POSIX systems.
struct sigaction act;
act.sa_handler = SIG_IGN;
sigemptyset (&act.sa_mask);
act.sa_flags = 0;
sigaction (SIGPIPE, &act, NULL);
+#endif /* USE_WIN32_SIGNALLING */
+
+ _Jv_JNI_Init ();
}
#ifndef DISABLE_GETENV_PROPERTIES
{
PROCESS_GCJ_PROPERTIES;
+ _Jv_argv = argv;
+ _Jv_argc = argc;
+
main_init ();
#ifdef HAVE_PROC_SELF_EXE
char exec_name[20];
#endif
arg_vec = JvConvertArgv (argc - 1, argv + 1);
- main_group = new java::lang::ThreadGroup (23);
- main_thread = new java::lang::FirstThread (main_group, klass, arg_vec);
+ main_thread = new gnu::gcj::runtime::FirstThread (klass, arg_vec);
main_thread->start();
_Jv_ThreadWait ();
- java::lang::Runtime::getRuntime ()->exit (0);
+ int status = (int) java::lang::ThreadGroup::had_uncaught_exception;
+
+ java::lang::Runtime::getRuntime ()->_exit (status);
}
void
-_Jv_RunMain (const char *class_name, int argc, const char **argv)
+_Jv_RunMain (const char *name, int argc, const char **argv, bool is_jar)
{
+ jstring class_name;
PROCESS_GCJ_PROPERTIES;
main_init ();
+#ifdef HAVE_PROC_SELF_EXE
+ char exec_name[20];
+ sprintf (exec_name, "/proc/%d/exe", getpid ());
+ _Jv_ThisExecutable (exec_name);
+#endif
+
+ if (is_jar)
+ {
+ // name specifies a jar file. We must now extract the
+ // Main-Class attribute from the jar's manifest file. This is
+ // done by gnu.gcj.runtime.FirstThread.main.
+ _Jv_Jar_Class_Path = strdup (name);
+ arg_vec = JvConvertArgv (1, &_Jv_Jar_Class_Path);
+
+ main_thread =
+ new gnu::gcj::runtime::FirstThread (&gnu::gcj::runtime::FirstThread::class$,
+ arg_vec);
+ main_thread->start();
+ _Jv_ThreadWait ();
+
+ // FirstThread.main extracts the main class name and stores it
+ // here.
+ class_name = gnu::gcj::runtime::FirstThread::jarMainClassName;
+
+ // We need a new ClassLoader because the classpath must be the
+ // jar file only. The easiest way to do this is to lose our
+ // reference to the previous classloader.
+ java::lang::ClassLoader::system = NULL;
+ }
+ else
+ class_name = JvNewStringLatin1 (name);
+
arg_vec = JvConvertArgv (argc - 1, argv + 1);
- main_group = new java::lang::ThreadGroup (23);
- main_thread = new java::lang::FirstThread (main_group,
- JvNewStringLatin1 (class_name),
- arg_vec);
- main_thread->start();
- _Jv_ThreadWait ();
- java::lang::Runtime::getRuntime ()->exit (0);
+ if (class_name)
+ {
+ main_thread = new gnu::gcj::runtime::FirstThread (class_name, arg_vec);
+ main_thread->start();
+ _Jv_ThreadWait ();
+ }
+
+ int status = (int) java::lang::ThreadGroup::had_uncaught_exception;
+
+ java::lang::Runtime::getRuntime ()->exit (status);
}
\f
void *
_Jv_Malloc (jsize size)
{
- if (size == 0)
+ if (__builtin_expect (size == 0, false))
size = 1;
void *ptr = malloc ((size_t) size);
- if (ptr == NULL)
+ if (__builtin_expect (ptr == NULL, false))
JvThrow (no_memory);
return ptr;
}
+void *
+_Jv_Realloc (void *ptr, jsize size)
+{
+ if (__builtin_expect (size == 0, false))
+ size = 1;
+ ptr = realloc (ptr, (size_t) size);
+ if (__builtin_expect (ptr == NULL, false))
+ JvThrow (no_memory);
+ return ptr;
+}
+
+void *
+_Jv_MallocUnchecked (jsize size)
+{
+ if (__builtin_expect (size == 0, false))
+ size = 1;
+ return malloc ((size_t) size);
+}
+
void
_Jv_Free (void* ptr)
{
jint
_Jv_divI (jint dividend, jint divisor)
{
- if (divisor == 0)
- _Jv_Throw (arithexception);
+ if (__builtin_expect (divisor == 0, false))
+ _Jv_ThrowSignal (arithexception);
if (dividend == (jint) 0x80000000L && divisor == -1)
return dividend;
jint
_Jv_remI (jint dividend, jint divisor)
{
- if (divisor == 0)
- _Jv_Throw (arithexception);
+ if (__builtin_expect (divisor == 0, false))
+ _Jv_ThrowSignal (arithexception);
if (dividend == (jint) 0x80000000L && divisor == -1)
return 0;
jlong
_Jv_divJ (jlong dividend, jlong divisor)
{
- if (divisor == 0)
- _Jv_Throw (arithexception);
+ if (__builtin_expect (divisor == 0, false))
+ _Jv_ThrowSignal (arithexception);
if (dividend == (jlong) 0x8000000000000000LL && divisor == -1)
return dividend;
jlong
_Jv_remJ (jlong dividend, jlong divisor)
{
- if (divisor == 0)
- _Jv_Throw (arithexception);
+ if (__builtin_expect (divisor == 0, false))
+ _Jv_ThrowSignal (arithexception);
if (dividend == (jlong) 0x8000000000000000LL && divisor == -1)
return 0;
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