// prims.cc - Code for core of runtime environment.
-/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation
+/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation
This file is part of libgcj.
details. */
#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 <platform.h>
#include <stdlib.h>
#include <stdarg.h>
#include <jvm.h>
#include <java-signal.h>
#include <java-threads.h>
+#include <java-interp.h>
#ifdef ENABLE_JVMPI
#include <jvmpi.h>
#include <java/lang/ThreadGroup.h>
#endif
+#include <jvmti.h>
+#include "jvmti-int.h"
+
#ifndef DISABLE_GETENV_PROPERTIES
#include <ctype.h>
#include <java-props.h>
#include <java/lang/String.h>
#include <java/lang/Thread.h>
#include <java/lang/ThreadGroup.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/ClassNotFoundException.h>
+#include <java/lang/InternalError.h>
#include <java/lang/NegativeArraySizeException.h>
+#include <java/lang/NoClassDefFoundError.h>
#include <java/lang/NullPointerException.h>
#include <java/lang/OutOfMemoryError.h>
#include <java/lang/System.h>
+#include <java/lang/VMClassLoader.h>
#include <java/lang/reflect/Modifier.h>
#include <java/io/PrintStream.h>
#include <java/lang/UnsatisfiedLinkError.h>
+#include <java/lang/VirtualMachineError.h>
+#include <gnu/gcj/runtime/ExtensionClassLoader.h>
+#include <gnu/gcj/runtime/FinalizerThread.h>
+#include <execution.h>
+#include <gnu/classpath/jdwp/Jdwp.h>
+#include <gnu/classpath/jdwp/VMVirtualMachine.h>
+#include <gnu/java/lang/MainThread.h>
#ifdef USE_LTDL
#include <ltdl.h>
#endif
+// Execution engine for compiled code.
+_Jv_CompiledEngine _Jv_soleCompiledEngine;
+
+// Execution engine for code compiled with -findirect-classes
+_Jv_IndirectCompiledEngine _Jv_soleIndirectCompiledEngine;
+
// We allocate a single OutOfMemoryError exception which we keep
// around for use if we run out of memory.
static java::lang::OutOfMemoryError *no_memory;
-// Largest representable size_t.
-#define SIZE_T_MAX ((size_t) (~ (size_t) 0))
-
-static const char *no_properties[] = { NULL };
+// Number of bytes in largest array object we create. This could be
+// increased to the largest size_t value, so long as the appropriate
+// functions are changed to take a size_t argument instead of jint.
+#define MAX_OBJECT_SIZE (((size_t)1<<31) - 1)
// Properties set at compile time.
-const char **_Jv_Compiler_Properties = no_properties;
-
-// The JAR file to add to the beginning of java.class.path.
-const char *_Jv_Jar_Class_Path;
+const char **_Jv_Compiler_Properties = NULL;
+int _Jv_Properties_Count = 0;
#ifndef DISABLE_GETENV_PROPERTIES
// Property key/value pairs.
property_pair *_Jv_Environment_Properties;
#endif
-// 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;
-typedef void main_func (jobject);
+// Debugging options
+static bool remoteDebug = false;
+static char defaultJdwpOptions[] = "";
+static char *jdwpOptions = defaultJdwpOptions;
+
+// Argument support.
+int
+_Jv_GetNbArgs (void)
+{
+ // _Jv_argc is 0 if not explicitly initialized.
+ return _Jv_argc;
+}
+
+const char *
+_Jv_GetSafeArg (int index)
+{
+ if (index >=0 && index < _Jv_GetNbArgs ())
+ return _Jv_argv[index];
+ else
+ return "";
+}
+
+void
+_Jv_SetArgs (int argc, const char **argv)
+{
+ _Jv_argc = argc;
+ _Jv_argv = argv;
+}
#ifdef ENABLE_JVMPI
// Pointer to JVMPI notification functions.
#endif
\f
-extern "C" void _Jv_ThrowSignal (jthrowable) __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 (jthrowable throwable)
+#if defined (HANDLE_SEGV) || defined(HANDLE_FPE)
+/* Unblock a signal. Unless we do this, the signal may only be sent
+ once. */
+static void
+unblock_signal (int signum __attribute__ ((__unused__)))
{
- throwable->fillInStackTrace ();
- throw throwable;
+#ifdef _POSIX_VERSION
+ sigset_t sigs;
+
+ sigemptyset (&sigs);
+ sigaddset (&sigs, signum);
+ sigprocmask (SIG_UNBLOCK, &sigs, NULL);
+#endif
}
-
-#ifdef HANDLE_SEGV
-static java::lang::NullPointerException *nullp;
+#endif
+#ifdef HANDLE_SEGV
SIGNAL_HANDLER (catch_segv)
{
+ unblock_signal (SIGSEGV);
MAKE_THROW_FRAME (nullp);
- _Jv_ThrowSignal (nullp);
+ java::lang::NullPointerException *nullp
+ = new java::lang::NullPointerException;
+ throw nullp;
}
#endif
-static java::lang::ArithmeticException *arithexception;
-
#ifdef HANDLE_FPE
SIGNAL_HANDLER (catch_fpe)
{
+ unblock_signal (SIGFPE);
#ifdef HANDLE_DIVIDE_OVERFLOW
HANDLE_DIVIDE_OVERFLOW;
#else
MAKE_THROW_FRAME (arithexception);
#endif
- _Jv_ThrowSignal (arithexception);
+ java::lang::ArithmeticException *arithexception
+ = new java::lang::ArithmeticException (JvNewStringLatin1 ("/ by zero"));
+ throw arithexception;
}
#endif
-\f
jboolean
-_Jv_equalUtf8Consts (Utf8Const* a, Utf8Const *b)
+_Jv_equalUtf8Consts (const Utf8Const* a, const Utf8Const *b)
{
int len;
- _Jv_ushort *aptr, *bptr;
+ const _Jv_ushort *aptr, *bptr;
if (a == b)
return true;
if (a->hash != b->hash)
len = a->length;
if (b->length != len)
return false;
- aptr = (_Jv_ushort *)a->data;
- bptr = (_Jv_ushort *)b->data;
+ aptr = (const _Jv_ushort *)a->data;
+ bptr = (const _Jv_ushort *)b->data;
len = (len + 1) >> 1;
while (--len >= 0)
if (*aptr++ != *bptr++)
return true;
}
+// Determines whether the given Utf8Const object contains
+// a type which is primitive or some derived form of it, eg.
+// an array or multi-dimensional array variant.
+jboolean
+_Jv_isPrimitiveOrDerived(const Utf8Const *a)
+{
+ unsigned char *aptr = (unsigned char *) a->data;
+ unsigned char *alimit = aptr + a->length;
+ int ac = UTF8_GET(aptr, alimit);
+
+ // Skips any leading array marks.
+ while (ac == '[')
+ ac = UTF8_GET(aptr, alimit);
+
+ // There should not be another character. This implies that
+ // the type name is only one character long.
+ if (UTF8_GET(aptr, alimit) == -1)
+ switch ( ac )
+ {
+ case 'Z':
+ case 'B':
+ case 'C':
+ case 'S':
+ case 'I':
+ case 'J':
+ case 'F':
+ case 'D':
+ return true;
+ default:
+ break;
+ }
+
+ return false;
+}
+
+// Find out whether two _Jv_Utf8Const candidates contain the same
+// classname.
+// The method is written to handle the different formats of classnames.
+// Eg. "Ljava/lang/Class;", "Ljava.lang.Class;", "java/lang/Class" and
+// "java.lang.Class" will be seen as equal.
+// Warning: This function is not smart enough to declare "Z" and "boolean"
+// and similar cases as equal (and is not meant to be used this way)!
+jboolean
+_Jv_equalUtf8Classnames (const Utf8Const *a, const Utf8Const *b)
+{
+ // If the class name's length differs by two characters
+ // it is possible that we have candidates which are given
+ // in the two different formats ("Lp1/p2/cn;" vs. "p1/p2/cn")
+ switch (a->length - b->length)
+ {
+ case -2:
+ case 0:
+ case 2:
+ break;
+ default:
+ return false;
+ }
+
+ unsigned char *aptr = (unsigned char *) a->data;
+ unsigned char *alimit = aptr + a->length;
+ unsigned char *bptr = (unsigned char *) b->data;
+ unsigned char *blimit = bptr + b->length;
+
+ if (alimit[-1] == ';')
+ alimit--;
+
+ if (blimit[-1] == ';')
+ blimit--;
+
+ int ac = UTF8_GET(aptr, alimit);
+ int bc = UTF8_GET(bptr, blimit);
+
+ // Checks whether both strings have the same amount of leading [ characters.
+ while (ac == '[')
+ {
+ if (bc == '[')
+ {
+ ac = UTF8_GET(aptr, alimit);
+ bc = UTF8_GET(bptr, blimit);
+ continue;
+ }
+
+ return false;
+ }
+
+ // Skips leading L character.
+ if (ac == 'L')
+ ac = UTF8_GET(aptr, alimit);
+
+ if (bc == 'L')
+ bc = UTF8_GET(bptr, blimit);
+
+ // Compares the remaining characters.
+ while (ac != -1 && bc != -1)
+ {
+ // Replaces package separating dots with slashes.
+ if (ac == '.')
+ ac = '/';
+
+ if (bc == '.')
+ bc = '/';
+
+ // Now classnames differ if there is at least one non-matching
+ // character.
+ if (ac != bc)
+ return false;
+
+ ac = UTF8_GET(aptr, alimit);
+ bc = UTF8_GET(bptr, blimit);
+ }
+
+ return (ac == bc);
+}
+
/* Count the number of Unicode chars encoded in a given Ut8 string. */
int
-_Jv_strLengthUtf8(char* str, int len)
+_Jv_strLengthUtf8(const char* str, int len)
{
unsigned char* ptr;
unsigned char* limit;
ptr = (unsigned char*) str;
limit = ptr + len;
str_length = 0;
- for (; ptr < limit; str_length++) {
- if (UTF8_GET (ptr, limit) < 0) {
- return (-1);
+ for (; ptr < limit; str_length++)
+ {
+ if (UTF8_GET (ptr, limit) < 0)
+ return (-1);
}
- }
return (str_length);
}
/* Calculate a hash value for a string encoded in Utf8 format.
* This returns the same hash value as specified or java.lang.String.hashCode.
*/
-static jint
-hashUtf8String (char* str, int len)
+jint
+_Jv_hashUtf8String (const char* str, int len)
{
unsigned char* ptr = (unsigned char*) str;
unsigned char* limit = ptr + len;
return hash;
}
+void
+_Jv_Utf8Const::init(const char *s, int len)
+{
+ ::memcpy (data, s, len);
+ data[len] = 0;
+ length = len;
+ hash = _Jv_hashUtf8String (s, len) & 0xFFFF;
+}
+
_Jv_Utf8Const *
-_Jv_makeUtf8Const (char* s, int len)
+_Jv_makeUtf8Const (const char* s, int len)
{
if (len < 0)
len = strlen (s);
- Utf8Const* m = (Utf8Const*) _Jv_AllocBytes (sizeof(Utf8Const) + len + 1);
- if (! m)
- throw no_memory;
- memcpy (m->data, s, len);
- m->data[len] = 0;
- m->length = len;
- m->hash = hashUtf8String (s, len) & 0xFFFF;
- return (m);
+ Utf8Const* m
+ = (Utf8Const*) _Jv_AllocBytes (_Jv_Utf8Const::space_needed(s, len));
+ m->init(s, len);
+ return m;
}
_Jv_Utf8Const *
jint len = _Jv_GetStringUTFLength (string);
Utf8Const* m = (Utf8Const*)
- _Jv_AllocBytesChecked (sizeof(Utf8Const) + len + 1);
+ _Jv_AllocBytes (sizeof(Utf8Const) + len + 1);
m->hash = hash;
m->length = len;
"libgcj failure: %s\n in function %s, file %s, line %d\n",
message, function, file, line);
#else
- java::io::PrintStream *err = java::lang::System::err;
- err->print(JvNewStringLatin1 ("libgcj failure: "));
- err->println(JvNewStringLatin1 (message));
- err->flush();
+ fprintf (stderr, "libgcj failure: %s\n", message);
#endif
+ fflush (stderr);
abort ();
}
throw new java::lang::NullPointerException;
}
-// Allocate some unscanned memory and throw an exception if no memory.
+// Resolve an entry in the constant pool and return the target
+// address.
void *
-_Jv_AllocBytesChecked (jsize size)
+_Jv_ResolvePoolEntry (jclass this_class, jint index)
{
- void *r = _Jv_AllocBytes (size);
- if (! r)
- throw no_memory;
- return r;
+ _Jv_Constants *pool = &this_class->constants;
+
+ if ((pool->tags[index] & JV_CONSTANT_ResolvedFlag) != 0)
+ return pool->data[index].field->u.addr;
+
+ JvSynchronize sync (this_class);
+ return (_Jv_Linker::resolve_pool_entry (this_class, index))
+ .field->u.addr;
+}
+
+
+// Explicitly throw a no memory exception.
+// The collector calls this when it encounters an out-of-memory condition.
+void _Jv_ThrowNoMemory()
+{
+ throw no_memory;
}
-// 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.
+#ifdef ENABLE_JVMPI
+# define JVMPI_NOTIFY_ALLOC(klass,size,obj) \
+ if (__builtin_expect (_Jv_JVMPI_Notify_OBJECT_ALLOC != 0, false)) \
+ jvmpi_notify_alloc(klass,size,obj);
+static void
+jvmpi_notify_alloc(jclass klass, jint size, jobject obj)
+{
+ // Service JVMPI allocation request.
+ 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;
+
+ // FIXME: This doesn't look right for the Boehm GC. A GC may
+ // already be in progress. _Jv_DisableGC () doesn't wait for it.
+ // More importantly, I don't see the need for disabling GC, since we
+ // blatantly have a pointer to obj on our stack, ensuring that the
+ // object can't be collected. Even for a nonconservative collector,
+ // it appears to me that this must be true, since we are about to
+ // return obj. Isn't this whole approach way too intrusive for
+ // a useful profiling interface? - HB
+ _Jv_DisableGC ();
+ (*_Jv_JVMPI_Notify_OBJECT_ALLOC) (&event);
+ _Jv_EnableGC ();
+}
+#else /* !ENABLE_JVMPI */
+# define JVMPI_NOTIFY_ALLOC(klass,size,obj) /* do nothing */
+#endif
+
+// Allocate a new object of class KLASS.
+// First a version that assumes that we have no finalizer, and that
+// the class is already initialized.
+// If we know that JVMPI is disabled, this can be replaced by a direct call
+// to the allocator for the appropriate GC.
jobject
-_Jv_AllocObject (jclass klass, jint size)
+_Jv_AllocObjectNoInitNoFinalizer (jclass klass)
{
- _Jv_InitClass (klass);
+ jint size = klass->size ();
+ jobject obj = (jobject) _Jv_AllocObj (size, klass);
+ JVMPI_NOTIFY_ALLOC (klass, size, obj);
+ return obj;
+}
+
+// And now a version that initializes if necessary.
+jobject
+_Jv_AllocObjectNoFinalizer (jclass klass)
+{
+ if (_Jv_IsPhantomClass(klass) )
+ throw new java::lang::NoClassDefFoundError(klass->getName());
+ _Jv_InitClass (klass);
+ jint size = klass->size ();
jobject obj = (jobject) _Jv_AllocObj (size, klass);
- if (__builtin_expect (! obj, false))
- throw no_memory;
+ JVMPI_NOTIFY_ALLOC (klass, size, obj);
+ return obj;
+}
- // If this class has inherited finalize from Object, then don't
- // bother registering a finalizer. We know that finalize() is the
- // very first method after the dummy entry. If this turns out to be
- // unreliable, a more robust implementation can be written. Such an
- // 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 (klass->vtable->get_finalizer()
- != java::lang::Object::class$.vtable->get_finalizer())
+// And now the general version that registers a finalizer if necessary.
+jobject
+_Jv_AllocObject (jclass klass)
+{
+ jobject obj = _Jv_AllocObjectNoFinalizer (klass);
+
+ // We assume that the compiler only generates calls to this routine
+ // if there really is an interesting finalizer.
+ // Unfortunately, we still have to the dynamic test, since there may
+ // be cni calls to this routine.
+ // Note that on IA64 get_finalizer() returns the starting address of the
+ // function, not a function pointer. Thus this still works.
+ if (klass->vtable->get_finalizer ()
+ != java::lang::Object::class$.vtable->get_finalizer ())
_Jv_RegisterFinalizer (obj, _Jv_FinalizeObject);
+ return obj;
+}
-#ifdef ENABLE_JVMPI
- // Service JVMPI request.
+// Allocate a String, including variable length storage.
+jstring
+_Jv_AllocString(jsize len)
+{
+ using namespace java::lang;
- 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
+ jsize sz = sizeof(java::lang::String) + len * sizeof(jchar);
+
+ // We assert that for strings allocated this way, the data field
+ // will always point to the object itself. Thus there is no reason
+ // for the garbage collector to scan any of it.
+ // Furthermore, we're about to overwrite the string data, so
+ // initialization of the object is not an issue.
+
+ // String needs no initialization, and there is no finalizer, so
+ // we can go directly to the collector's allocator interface.
+ jstring obj = (jstring) _Jv_AllocPtrFreeObj(sz, &String::class$);
+
+ obj->data = obj;
+ obj->boffset = sizeof(java::lang::String);
+ obj->count = len;
+ obj->cachedHashCode = 0;
+
+ JVMPI_NOTIFY_ALLOC (&String::class$, sz, obj);
+
+ return obj;
+}
+
+// A version of the above that assumes the object contains no pointers,
+// and requires no finalization. This can't happen if we need pointers
+// to locks.
+#ifdef JV_HASH_SYNCHRONIZATION
+jobject
+_Jv_AllocPtrFreeObject (jclass klass)
+{
+ _Jv_InitClass (klass);
+ jint size = klass->size ();
+
+ jobject obj = (jobject) _Jv_AllocPtrFreeObj (size, klass);
+
+ JVMPI_NOTIFY_ALLOC (klass, size, obj);
return obj;
}
+#endif /* JV_HASH_SYNCHRONIZATION */
+
// Allocate a new array of Java objects. Each object is of type
// `elementClass'. `init' is used to initialize each slot in the
jobjectArray
_Jv_NewObjectArray (jsize count, jclass elementClass, jobject init)
{
+ // Creating an array of an unresolved type is impossible. So we throw
+ // the NoClassDefFoundError.
+ if ( _Jv_IsPhantomClass(elementClass) )
+ throw new java::lang::NoClassDefFoundError(elementClass->getName());
+
if (__builtin_expect (count < 0, false))
throw new java::lang::NegativeArraySizeException;
// Ensure that elements pointer is properly aligned.
jobjectArray obj = NULL;
size_t size = (size_t) elements (obj);
+ // Check for overflow.
+ if (__builtin_expect ((size_t) count >
+ (MAX_OBJECT_SIZE - 1 - size) / sizeof (jobject), false))
+ throw no_memory;
+
size += count * sizeof (jobject);
- // FIXME: second argument should be "current loader"
- jclass klass = _Jv_GetArrayClass (elementClass, 0);
+ jclass klass = _Jv_GetArrayClass (elementClass,
+ elementClass->getClassLoaderInternal());
obj = (jobjectArray) _Jv_AllocArray (size, klass);
- if (__builtin_expect (! obj, false))
- throw no_memory;
// Cast away const.
jsize *lp = const_cast<jsize *> (&obj->length);
*lp = count;
// Check for overflow.
if (__builtin_expect ((size_t) count >
- (SIZE_T_MAX - size) / elsize, false))
+ (MAX_OBJECT_SIZE - size) / elsize, false))
throw no_memory;
jclass klass = _Jv_GetArrayClass (eltype, 0);
+# ifdef JV_HASH_SYNCHRONIZATION
+ // Since the vtable is always statically allocated,
+ // these are completely pointerfree! Make sure the GC doesn't touch them.
+ __JArray *arr =
+ (__JArray*) _Jv_AllocPtrFreeObj (size + elsize * count, klass);
+ memset((char *)arr + size, 0, elsize * count);
+# else
__JArray *arr = (__JArray*) _Jv_AllocObj (size + elsize * count, klass);
- if (__builtin_expect (! arr, false))
- throw no_memory;
+ // Note that we assume we are given zeroed memory by the allocator.
+# endif
// Cast away const.
jsize *lp = const_cast<jsize *> (&arr->length);
*lp = count;
- // Note that we assume we are given zeroed memory by the allocator.
return arr;
}
case 10: return JvNewIntArray (size);
case 11: return JvNewLongArray (size);
}
- JvFail ("newarray - bad type code");
- return NULL; // Placate compiler.
+ throw new java::lang::InternalError
+ (JvNewStringLatin1 ("invalid type code in _Jv_NewArray"));
}
-jobject
-_Jv_NewMultiArray (jclass type, jint dimensions, jint *sizes)
+// Allocate a possibly multi-dimensional array but don't check that
+// any array length is <0.
+static jobject
+_Jv_NewMultiArrayUnchecked (jclass type, jint dimensions, jint *sizes)
{
JvAssert (type->isArray());
jclass element_type = type->getComponentType();
JvAssert (element_type->isArray());
jobject *contents = elements ((jobjectArray) result);
for (int i = 0; i < sizes[0]; ++i)
- contents[i] = _Jv_NewMultiArray (element_type, dimensions - 1,
- sizes + 1);
+ contents[i] = _Jv_NewMultiArrayUnchecked (element_type, dimensions - 1,
+ sizes + 1);
}
return result;
}
jobject
+_Jv_NewMultiArray (jclass type, jint dimensions, jint *sizes)
+{
+ for (int i = 0; i < dimensions; ++i)
+ if (sizes[i] < 0)
+ throw new java::lang::NegativeArraySizeException;
+
+ return _Jv_NewMultiArrayUnchecked (type, dimensions, sizes);
+}
+
+jobject
_Jv_NewMultiArray (jclass array_type, jint dimensions, ...)
{
+ // Creating an array of an unresolved type is impossible. So we throw
+ // the NoClassDefFoundError.
+ if (_Jv_IsPhantomClass(array_type))
+ throw new java::lang::NoClassDefFoundError(array_type->getName());
+
va_list args;
jint sizes[dimensions];
va_start (args, dimensions);
for (int i = 0; i < dimensions; ++i)
{
jint size = va_arg (args, jint);
+ if (size < 0)
+ throw new java::lang::NegativeArraySizeException;
sizes[i] = size;
}
va_end (args);
- return _Jv_NewMultiArray (array_type, dimensions, sizes);
+ return _Jv_NewMultiArrayUnchecked (array_type, dimensions, sizes);
}
\f
-#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);
-DECLARE_PRIM_TYPE(int, 'I', 4);
-DECLARE_PRIM_TYPE(long, 'J', 8);
-DECLARE_PRIM_TYPE(boolean, 'Z', 1);
-DECLARE_PRIM_TYPE(char, 'C', 2);
-DECLARE_PRIM_TYPE(float, 'F', 4);
-DECLARE_PRIM_TYPE(double, 'D', 8);
-DECLARE_PRIM_TYPE(void, 'V', 0);
+// Ensure 8-byte alignment, for hash synchronization.
+#define DECLARE_PRIM_TYPE(NAME) \
+ java::lang::Class _Jv_##NAME##Class __attribute__ ((aligned (8)));
+
+DECLARE_PRIM_TYPE(byte)
+DECLARE_PRIM_TYPE(short)
+DECLARE_PRIM_TYPE(int)
+DECLARE_PRIM_TYPE(long)
+DECLARE_PRIM_TYPE(boolean)
+DECLARE_PRIM_TYPE(char)
+DECLARE_PRIM_TYPE(float)
+DECLARE_PRIM_TYPE(double)
+DECLARE_PRIM_TYPE(void)
+
+void
+_Jv_InitPrimClass (jclass cl, const char *cname, char sig, int len)
+{
+ using namespace java::lang::reflect;
+
+ // We must set the vtable for the class; the Java constructor
+ // doesn't do this.
+ (*(_Jv_VTable **) cl) = java::lang::Class::class$.vtable;
+
+ // Initialize the fields we care about. We do this in the same
+ // order they are declared in Class.h.
+ cl->name = _Jv_makeUtf8Const ((char *) cname, -1);
+ cl->accflags = Modifier::PUBLIC | Modifier::FINAL | Modifier::ABSTRACT;
+ cl->method_count = sig;
+ cl->size_in_bytes = len;
+ cl->vtable = JV_PRIMITIVE_VTABLE;
+ cl->state = JV_STATE_DONE;
+ cl->depth = -1;
+}
jclass
-_Jv_FindClassFromSignature (char *sig, java::lang::ClassLoader *loader)
+_Jv_FindClassFromSignature (char *sig, java::lang::ClassLoader *loader,
+ char **endp)
{
+ // First count arrays.
+ int array_count = 0;
+ while (*sig == '[')
+ {
+ ++sig;
+ ++array_count;
+ }
+
+ jclass result = NULL;
switch (*sig)
{
case 'B':
- return JvPrimClass (byte);
+ result = JvPrimClass (byte);
+ break;
case 'S':
- return JvPrimClass (short);
+ result = JvPrimClass (short);
+ break;
case 'I':
- return JvPrimClass (int);
+ result = JvPrimClass (int);
+ break;
case 'J':
- return JvPrimClass (long);
+ result = JvPrimClass (long);
+ break;
case 'Z':
- return JvPrimClass (boolean);
+ result = JvPrimClass (boolean);
+ break;
case 'C':
- return JvPrimClass (char);
+ result = JvPrimClass (char);
+ break;
case 'F':
- return JvPrimClass (float);
+ result = JvPrimClass (float);
+ break;
case 'D':
- return JvPrimClass (double);
+ result = JvPrimClass (double);
+ break;
case 'V':
- return JvPrimClass (void);
+ result = JvPrimClass (void);
+ break;
case 'L':
{
- int i;
- for (i = 1; sig[i] && sig[i] != ';'; ++i)
- ;
- _Jv_Utf8Const *name = _Jv_makeUtf8Const (&sig[1], i - 1);
- return _Jv_FindClass (name, loader);
-
- }
- case '[':
- {
- jclass klass = _Jv_FindClassFromSignature (&sig[1], loader);
- if (! klass)
- return NULL;
- return _Jv_GetArrayClass (klass, loader);
+ char *save = ++sig;
+ while (*sig && *sig != ';')
+ ++sig;
+ // Do nothing if signature appears to be malformed.
+ if (*sig == ';')
+ {
+ _Jv_Utf8Const *name = _Jv_makeUtf8Const (save, sig - save);
+ result = _Jv_FindClass (name, loader);
+ }
+ break;
}
+ default:
+ // Do nothing -- bad signature.
+ break;
}
- return NULL; // Placate compiler.
+ if (endp)
+ {
+ // Not really the "end", but the last valid character that we
+ // looked at.
+ *endp = sig;
+ }
+
+ if (! result)
+ return NULL;
+
+ // Find arrays.
+ while (array_count-- > 0)
+ result = _Jv_GetArrayClass (result, loader);
+ return result;
}
-\f
+
+jclass
+_Jv_FindClassFromSignatureNoException (char *sig, java::lang::ClassLoader *loader,
+ char **endp)
+{
+ jclass klass;
+
+ try
+ {
+ klass = _Jv_FindClassFromSignature(sig, loader, endp);
+ }
+ catch (java::lang::NoClassDefFoundError *ncdfe)
+ {
+ return NULL;
+ }
+ catch (java::lang::ClassNotFoundException *cnfe)
+ {
+ return NULL;
+ }
+
+ return klass;
+}
JArray<jstring> *
JvConvertArgv (int argc, const char **argv)
{
if (argc < 0)
argc = 0;
- jobjectArray ar = JvNewObjectArray(argc, &StringClass, NULL);
- jobject* ptr = elements(ar);
+ jobjectArray ar = JvNewObjectArray(argc, &java::lang::String::class$, NULL);
+ jobject *ptr = elements(ar);
+ jbyteArray bytes = NULL;
for (int i = 0; i < argc; i++)
{
const char *arg = argv[i];
- // FIXME - should probably use JvNewStringUTF.
- *ptr++ = JvNewStringLatin1(arg, strlen(arg));
+ int len = strlen (arg);
+ if (bytes == NULL || bytes->length < len)
+ bytes = JvNewByteArray (len);
+ jbyte *bytePtr = elements (bytes);
+ // We assume jbyte == char.
+ memcpy (bytePtr, arg, len);
+
+ // Now convert using the default encoding.
+ *ptr++ = new java::lang::String (bytes, 0, len);
}
return (JArray<jstring>*) ar;
}
// it will only scan the qthreads stacks.
// Command line arguments.
-static jobject arg_vec;
+static JArray<jstring> *arg_vec;
// The primary thread.
static java::lang::Thread *main_thread;
-char *
-_Jv_ThisExecutable (void)
-{
- return _Jv_execName;
-}
-
-void
-_Jv_ThisExecutable (const char *name)
-{
- if (name)
- {
- _Jv_execName = (char *) _Jv_Malloc (strlen (name) + 1);
- strcpy (_Jv_execName, name);
- }
-}
-
-#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
-
-/* This will be non-NULL if the user has preloaded a JNI library, or
- linked one into the executable. */
-extern "C"
-{
-#pragma weak JNI_OnLoad
- extern jint JNI_OnLoad (JavaVM *, void *) __attribute__((weak));
-}
-
-
#ifndef DISABLE_GETENV_PROPERTIES
static char *
while (isspace (*s))
s++;
- // If we've reached the end, return NULL.
- if (*s == 0)
- return NULL;
-
// Determine the length of the property value.
while (s[l] != 0
&& ! isspace (s[l])
process_gcj_properties ()
{
char *props = getenv("GCJ_PROPERTIES");
- char *p = props;
- size_t length;
- size_t property_count = 0;
if (NULL == props)
return;
+ // Later on we will write \0s into this string. It is simplest to
+ // just duplicate it here.
+ props = strdup (props);
+
+ char *p = props;
+ size_t length;
+ size_t property_count = 0;
+
// Whip through props quickly in order to count the number of
// property values.
while (p && (p = next_property_key (p, &length)))
}
memset ((void *) &_Jv_Environment_Properties[property_count],
0, sizeof (property_pair));
- {
- size_t i = 0;
- // Null terminate the strings.
- while (_Jv_Environment_Properties[i].key)
- {
- _Jv_Environment_Properties[i].key[_Jv_Environment_Properties[i].key_length] = 0;
- _Jv_Environment_Properties[i++].value[_Jv_Environment_Properties[i].value_length] = 0;
- }
- }
+ // Null terminate the strings.
+ for (property_pair *prop = &_Jv_Environment_Properties[0];
+ prop->key != NULL;
+ prop++)
+ {
+ prop->key[prop->key_length] = 0;
+ prop->value[prop->value_length] = 0;
+ }
}
#endif // DISABLE_GETENV_PROPERTIES
-jint
-_Jv_CreateJavaVM (void* /*vm_args*/)
+namespace gcj
{
- PROCESS_GCJ_PROPERTIES;
-
- // Turn stack trace generation off while creating exception objects.
- _Jv_InitClass (&java::lang::Throwable::class$);
- java::lang::Throwable::trace_enabled = 0;
+ _Jv_Utf8Const *void_signature;
+ _Jv_Utf8Const *clinit_name;
+ _Jv_Utf8Const *init_name;
+ _Jv_Utf8Const *finit_name;
- INIT_SEGV;
-#ifdef HANDLE_FPE
- INIT_FPE;
-#else
- arithexception = new java::lang::ArithmeticException
- (JvNewStringLatin1 ("/ by zero"));
-#endif
-
- no_memory = new java::lang::OutOfMemoryError;
+ bool runtimeInitialized = false;
+
+ // When true, print debugging information about class loading.
+ bool verbose_class_flag;
+
+ // When true, enable the bytecode verifier and BC-ABI type verification.
+ bool verifyClasses = true;
- java::lang::Throwable::trace_enabled = 1;
+ // Thread stack size specified by the -Xss runtime argument.
+ size_t stack_size = 0;
-#ifdef USE_LTDL
- LTDL_SET_PRELOADED_SYMBOLS ();
-#endif
+ // Start time of the VM
+ jlong startTime = 0;
-#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 */
+ // Arguments passed to the VM
+ JArray<jstring>* vmArgs;
-#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 */
+ // Currently loaded classes
+ jint loadedClasses = 0;
- _Jv_JNI_Init ();
+ // Unloaded classes
+ jlong unloadedClasses = 0;
+}
- /* Some systems let you preload shared libraries before running a
- program. Under Linux, this is done by setting the LD_PRELOAD
- environment variable. We take advatage of this here to allow for
- dynamically loading a JNI library into a fully linked executable. */
+// We accept all non-standard options accepted by Sun's java command,
+// for compatibility with existing application launch scripts.
+static jint
+parse_x_arg (char* option_string)
+{
+ if (strlen (option_string) <= 0)
+ return -1;
- if (JNI_OnLoad != NULL)
+ if (! strcmp (option_string, "int"))
+ {
+ // FIXME: this should cause the vm to never load shared objects
+ }
+ else if (! strcmp (option_string, "mixed"))
+ {
+ // FIXME: allow interpreted and native code
+ }
+ else if (! strcmp (option_string, "batch"))
+ {
+ // FIXME: disable background JIT'ing
+ }
+ else if (! strcmp (option_string, "debug"))
{
- JavaVM *vm = _Jv_GetJavaVM ();
- if (vm == NULL)
+ remoteDebug = true;
+ }
+ else if (! strncmp (option_string, "runjdwp:", 8))
+ {
+ if (strlen (option_string) > 8)
+ jdwpOptions = &option_string[8];
+ else
{
- // FIXME: what?
+ fprintf (stderr,
+ "libgcj: argument required for JDWP options");
return -1;
}
- jint vers = JNI_OnLoad (vm, NULL);
- if (vers != JNI_VERSION_1_1 && vers != JNI_VERSION_1_2)
- {
- // FIXME: unload the library.
- _Jv_Throw (new java::lang::UnsatisfiedLinkError (JvNewStringLatin1 ("unrecognized version from preloaded JNI_OnLoad")));
- }
}
+ else if (! strncmp (option_string, "bootclasspath:", 14))
+ {
+ // FIXME: add a parse_bootclasspath_arg function
+ }
+ else if (! strncmp (option_string, "bootclasspath/a:", 16))
+ {
+ }
+ else if (! strncmp (option_string, "bootclasspath/p:", 16))
+ {
+ }
+ else if (! strcmp (option_string, "check:jni"))
+ {
+ // FIXME: enable strict JNI checking
+ }
+ else if (! strcmp (option_string, "future"))
+ {
+ // FIXME: enable strict class file format checks
+ }
+ else if (! strcmp (option_string, "noclassgc"))
+ {
+ // FIXME: disable garbage collection for classes
+ }
+ else if (! strcmp (option_string, "incgc"))
+ {
+ // FIXME: incremental garbage collection
+ }
+ else if (! strncmp (option_string, "loggc:", 6))
+ {
+ if (option_string[6] == '\0')
+ {
+ fprintf (stderr,
+ "libgcj: filename argument expected for loggc option\n");
+ return -1;
+ }
+ // FIXME: set gc logging filename
+ }
+ else if (! strncmp (option_string, "ms", 2))
+ {
+ // FIXME: ignore this option until PR 20699 is fixed.
+ // _Jv_SetInitialHeapSize (option_string + 2);
+ }
+ else if (! strncmp (option_string, "mx", 2))
+ _Jv_SetMaximumHeapSize (option_string + 2);
+ else if (! strcmp (option_string, "prof"))
+ {
+ // FIXME: enable profiling of program running in vm
+ }
+ else if (! strncmp (option_string, "runhprof:", 9))
+ {
+ // FIXME: enable specific type of vm profiling. add a
+ // parse_runhprof_arg function
+ }
+ else if (! strcmp (option_string, "rs"))
+ {
+ // FIXME: reduced system signal usage. disable thread dumps,
+ // only terminate in response to user-initiated calls,
+ // e.g. System.exit()
+ }
+ else if (! strncmp (option_string, "ss", 2))
+ {
+ _Jv_SetStackSize (option_string + 2);
+ }
+ else if (! strcmp (option_string, "X:+UseAltSigs"))
+ {
+ // FIXME: use signals other than SIGUSR1 and SIGUSR2
+ }
+ else if (! strcmp (option_string, "share:off"))
+ {
+ // FIXME: don't share class data
+ }
+ else if (! strcmp (option_string, "share:auto"))
+ {
+ // FIXME: share class data where possible
+ }
+ else if (! strcmp (option_string, "share:on"))
+ {
+ // FIXME: fail if impossible to share class data
+ }
+
return 0;
}
-static void
-runFirst (::java::lang::Class *klass, ::java::lang::Object *args)
-{
- Utf8Const* main_signature = _Jv_makeUtf8Const ("([Ljava.lang.String;)V", 22);
- Utf8Const* main_name = _Jv_makeUtf8Const ("main", 4);
-
- _Jv_Method *meth = _Jv_GetMethodLocal (klass, main_name, main_signature);
-
- // Some checks from Java Spec section 12.1.4.
- const char *msg = NULL;
- if (meth == NULL)
- msg = "no suitable method `main' in class";
- else if (! java::lang::reflect::Modifier::isStatic(meth->accflags))
- msg = "`main' must be static";
- else if (! java::lang::reflect::Modifier::isPublic(meth->accflags))
- msg = "`main' must be public";
- if (msg != NULL)
+static jint
+parse_verbose_args (char* option_string,
+ bool ignore_unrecognized)
+{
+ size_t len = sizeof ("-verbose") - 1;
+
+ if (strlen (option_string) < len)
+ return -1;
+
+ if (option_string[len] == ':'
+ && option_string[len + 1] != '\0')
{
- fprintf (stderr, "%s\n", msg);
- ::exit(1);
- }
+ char* verbose_args = option_string + len + 1;
-#ifdef WITH_JVMPI
- if (_Jv_JVMPI_Notify_THREAD_START)
+ do
+ {
+ if (! strncmp (verbose_args,
+ "gc", sizeof ("gc") - 1))
+ {
+ if (verbose_args[sizeof ("gc") - 1] == '\0'
+ || verbose_args[sizeof ("gc") - 1] == ',')
+ {
+ // FIXME: we should add functions to boehm-gc that
+ // toggle GC_print_stats, GC_PRINT_ADDRESS_MAP and
+ // GC_print_back_height.
+ verbose_args += sizeof ("gc") - 1;
+ }
+ else
+ {
+ verbose_arg_err:
+ fprintf (stderr, "libgcj: unknown verbose option: %s\n",
+ option_string);
+ return -1;
+ }
+ }
+ else if (! strncmp (verbose_args,
+ "class",
+ sizeof ("class") - 1))
+ {
+ if (verbose_args[sizeof ("class") - 1] == '\0'
+ || verbose_args[sizeof ("class") - 1] == ',')
+ {
+ gcj::verbose_class_flag = true;
+ verbose_args += sizeof ("class") - 1;
+ }
+ else
+ goto verbose_arg_err;
+ }
+ else if (! strncmp (verbose_args, "jni",
+ sizeof ("jni") - 1))
+ {
+ if (verbose_args[sizeof ("jni") - 1] == '\0'
+ || verbose_args[sizeof ("jni") - 1] == ',')
+ {
+ // FIXME: enable JNI messages.
+ verbose_args += sizeof ("jni") - 1;
+ }
+ else
+ goto verbose_arg_err;
+ }
+ else if (ignore_unrecognized
+ && verbose_args[0] == 'X')
+ {
+ // ignore unrecognized non-standard verbose option
+ while (verbose_args[0] != '\0'
+ && verbose_args[0] != ',')
+ verbose_args++;
+ }
+ else if (verbose_args[0] == ',')
+ {
+ verbose_args++;
+ }
+ else
+ goto verbose_arg_err;
+
+ if (verbose_args[0] == ',')
+ verbose_args++;
+ }
+ while (verbose_args[0] != '\0');
+ }
+ else if (option_string[len] == 'g'
+ && option_string[len + 1] == 'c'
+ && option_string[len + 2] == '\0')
+ {
+ // FIXME: we should add functions to boehm-gc that
+ // toggle GC_print_stats, GC_PRINT_ADDRESS_MAP and
+ // GC_print_back_height.
+ return 0;
+ }
+ else if (option_string[len] == '\0')
+ {
+ gcj::verbose_class_flag = true;
+ return 0;
+ }
+ else
{
- JVMPI_Event event;
+ // unrecognized option beginning with -verbose
+ return -1;
+ }
+ return 0;
+}
- jstring thread_name = getName ();
- jstring group_name = NULL, parent_name = NULL;
- java::lang::ThreadGroup *group = getThreadGroup ();
+static jint
+parse_init_args (JvVMInitArgs* vm_args)
+{
+ // if _Jv_Compiler_Properties is non-NULL then it needs to be
+ // re-allocated dynamically.
+ if (_Jv_Compiler_Properties)
+ {
+ const char** props = _Jv_Compiler_Properties;
+ _Jv_Compiler_Properties = NULL;
- if (group)
+ for (int i = 0; props[i]; i++)
{
- group_name = group->getName ();
- group = group->getParent ();
+ _Jv_Compiler_Properties = (const char**) _Jv_Realloc
+ (_Jv_Compiler_Properties,
+ (_Jv_Properties_Count + 1) * sizeof (const char*));
+ _Jv_Compiler_Properties[_Jv_Properties_Count++] = props[i];
+ }
+ }
- if (group)
- parent_name = group->getName ();
+ if (vm_args == NULL)
+ return 0;
+
+ for (int i = 0; i < vm_args->nOptions; ++i)
+ {
+ char* option_string = vm_args->options[i].optionString;
+ if (! strcmp (option_string, "vfprintf")
+ || ! strcmp (option_string, "exit")
+ || ! strcmp (option_string, "abort"))
+ {
+ // FIXME: we are required to recognize these, but for
+ // now we don't handle them in any way.
+ continue;
}
+ else if (! strncmp (option_string,
+ "-verbose", sizeof ("-verbose") - 1))
+ {
+ jint result = parse_verbose_args (option_string,
+ vm_args->ignoreUnrecognized);
+ if (result < 0)
+ return result;
+ }
+ else if (! strncmp (option_string, "-D", 2))
+ {
+ _Jv_Compiler_Properties = (const char**) _Jv_Realloc
+ (_Jv_Compiler_Properties,
+ (_Jv_Properties_Count + 1) * sizeof (char*));
- int thread_len = thread_name ? JvGetStringUTFLength (thread_name) : 0;
- int group_len = group_name ? JvGetStringUTFLength (group_name) : 0;
- int parent_len = parent_name ? JvGetStringUTFLength (parent_name) : 0;
-
- char thread_chars[thread_len + 1];
- char group_chars[group_len + 1];
- char parent_chars[parent_len + 1];
-
- if (thread_name)
- JvGetStringUTFRegion (thread_name, 0,
- thread_name->length(), thread_chars);
- if (group_name)
- JvGetStringUTFRegion (group_name, 0,
- group_name->length(), group_chars);
- if (parent_name)
- JvGetStringUTFRegion (parent_name, 0,
- parent_name->length(), parent_chars);
-
- thread_chars[thread_len] = '\0';
- group_chars[group_len] = '\0';
- parent_chars[parent_len] = '\0';
-
- event.event_type = JVMPI_EVENT_THREAD_START;
- event.env_id = NULL;
- event.u.thread_start.thread_name = thread_chars;
- event.u.thread_start.group_name = group_chars;
- event.u.thread_start.parent_name = parent_chars;
- event.u.thread_start.thread_id = (jobjectID) this;
- event.u.thread_start.thread_env_id = _Jv_GetCurrentJNIEnv ();
-
- _Jv_DisableGC ();
- (*_Jv_JVMPI_Notify_THREAD_START) (&event);
- _Jv_EnableGC ();
- }
-#endif
+ _Jv_Compiler_Properties[_Jv_Properties_Count++] =
+ strdup (option_string + 2);
- main_func *real_main = (main_func *) meth->ncode;
- (*real_main) (args);
+ continue;
+ }
+ else if (vm_args->ignoreUnrecognized)
+ {
+ if (option_string[0] == '_')
+ parse_x_arg (option_string + 1);
+ else if (! strncmp (option_string, "-X", 2))
+ parse_x_arg (option_string + 2);
+ else
+ {
+ unknown_option:
+ fprintf (stderr, "libgcj: unknown option: %s\n", option_string);
+ return -1;
+ }
+ }
+ else
+ goto unknown_option;
+ }
+ return 0;
}
-void
-JvRunMain (jclass klass, int argc, const char **argv)
+jint
+_Jv_CreateJavaVM (JvVMInitArgs* vm_args)
{
- _Jv_argv = argv;
- _Jv_argc = argc;
+ using namespace gcj;
- _Jv_CreateJavaVM (NULL);
-#ifdef HAVE_PROC_SELF_EXE
- char exec_name[20];
- sprintf (exec_name, "/proc/%d/exe", getpid ());
- _Jv_ThisExecutable (exec_name);
-#else
- _Jv_ThisExecutable (argv[0]);
+ if (runtimeInitialized)
+ return -1;
+
+ runtimeInitialized = true;
+ startTime = _Jv_platform_gettimeofday();
+
+ jint result = parse_init_args (vm_args);
+ if (result < 0)
+ return -1;
+
+ PROCESS_GCJ_PROPERTIES;
+
+ /* Threads must be initialized before the GC, so that it inherits the
+ signal mask. */
+ _Jv_InitThreads ();
+ _Jv_InitGC ();
+ _Jv_InitializeSyncMutex ();
+
+#ifdef INTERPRETER
+ _Jv_InitInterpreter ();
+#endif
+
+#ifdef HANDLE_SEGV
+ INIT_SEGV;
+#endif
+
+#ifdef HANDLE_FPE
+ INIT_FPE;
+#endif
+
+ /* Initialize Utf8 constants declared in jvm.h. */
+ void_signature = _Jv_makeUtf8Const ("()V", 3);
+ clinit_name = _Jv_makeUtf8Const ("<clinit>", 8);
+ init_name = _Jv_makeUtf8Const ("<init>", 6);
+ finit_name = _Jv_makeUtf8Const ("finit$", 6);
+
+ /* Initialize built-in classes to represent primitive TYPEs. */
+ _Jv_InitPrimClass (&_Jv_byteClass, "byte", 'B', 1);
+ _Jv_InitPrimClass (&_Jv_shortClass, "short", 'S', 2);
+ _Jv_InitPrimClass (&_Jv_intClass, "int", 'I', 4);
+ _Jv_InitPrimClass (&_Jv_longClass, "long", 'J', 8);
+ _Jv_InitPrimClass (&_Jv_booleanClass, "boolean", 'Z', 1);
+ _Jv_InitPrimClass (&_Jv_charClass, "char", 'C', 2);
+ _Jv_InitPrimClass (&_Jv_floatClass, "float", 'F', 4);
+ _Jv_InitPrimClass (&_Jv_doubleClass, "double", 'D', 8);
+ _Jv_InitPrimClass (&_Jv_voidClass, "void", 'V', 0);
+
+ // We have to initialize this fairly early, to avoid circular class
+ // initialization. In particular we want to start the
+ // initialization of ClassLoader before we start the initialization
+ // of VMClassLoader.
+ _Jv_InitClass (&java::lang::ClassLoader::class$);
+
+ // Set up the system class loader and the bootstrap class loader.
+ gnu::gcj::runtime::ExtensionClassLoader::initialize();
+ java::lang::VMClassLoader::initialize(JvNewStringLatin1(TOOLEXECLIBDIR));
+
+ _Jv_RegisterBootstrapPackages();
+
+ no_memory = new java::lang::OutOfMemoryError;
+
+#ifdef USE_LTDL
+ LTDL_SET_PRELOADED_SYMBOLS ();
#endif
- main_thread = _Jv_AttachCurrentThread (JvNewStringLatin1 ("main"), NULL);
- arg_vec = JvConvertArgv (argc - 1, argv + 1);
- runFirst (klass, arg_vec);
- _Jv_ThreadWait ();
+ _Jv_platform_initialize ();
+
+ _Jv_JNI_Init ();
+ _Jv_JVMTI_Init ();
- int status = (int) java::lang::ThreadGroup::had_uncaught_exception;
-
- java::lang::Runtime::getRuntime ()->_exit (status);
+ _Jv_GCInitializeFinalizers (&::gnu::gcj::runtime::FinalizerThread::finalizerReady);
+
+ // Start the GC finalizer thread. A VirtualMachineError can be
+ // thrown by the runtime if, say, threads aren't available.
+ try
+ {
+ using namespace gnu::gcj::runtime;
+ FinalizerThread *ft = new FinalizerThread ();
+ ft->start ();
+ }
+ catch (java::lang::VirtualMachineError *ignore)
+ {
+ }
+
+ runtimeInitialized = true;
+
+ return 0;
}
void
-_Jv_RunMain (const char *name, int argc, const char **argv, bool is_jar)
+_Jv_RunMain (JvVMInitArgs *vm_args, jclass klass, const char *name, int argc,
+ const char **argv, bool is_jar)
{
- jstring class_name;
+#ifndef DISABLE_MAIN_ARGS
+ _Jv_SetArgs (argc, argv);
+#endif
- _Jv_CreateJavaVM (NULL);
+ java::lang::Runtime *runtime = NULL;
-#ifdef HAVE_PROC_SELF_EXE
- char exec_name[20];
- sprintf (exec_name, "/proc/%d/exe", getpid ());
- _Jv_ThisExecutable (exec_name);
+ try
+ {
+ if (_Jv_CreateJavaVM (vm_args) < 0)
+ {
+ fprintf (stderr, "libgcj: couldn't create virtual machine\n");
+ exit (1);
+ }
+
+ if (vm_args == NULL)
+ gcj::vmArgs = JvConvertArgv(0, NULL);
+ else
+ {
+ const char* vmArgs[vm_args->nOptions];
+ const char** vmPtr = vmArgs;
+ struct _Jv_VMOption* optionPtr = vm_args->options;
+ for (int i = 0; i < vm_args->nOptions; ++i)
+ *vmPtr++ = (*optionPtr++).optionString;
+ gcj::vmArgs = JvConvertArgv(vm_args->nOptions, vmArgs);
+ }
+
+ // Get the Runtime here. We want to initialize it before searching
+ // for `main'; that way it will be set up if `main' is a JNI method.
+ runtime = java::lang::Runtime::getRuntime ();
+
+#ifdef DISABLE_MAIN_ARGS
+ arg_vec = JvConvertArgv (0, 0);
+#else
+ arg_vec = JvConvertArgv (argc - 1, argv + 1);
#endif
- main_thread = _Jv_AttachCurrentThread (JvNewStringLatin1 ("main"), NULL);
+ using namespace gnu::java::lang;
+ if (klass)
+ main_thread = new MainThread (klass, arg_vec);
+ else
+ main_thread = new MainThread (JvNewStringUTF (name),
+ arg_vec, is_jar);
+ _Jv_AttachCurrentThread (main_thread);
+
+ // Start JDWP
+ if (remoteDebug)
+ {
+ using namespace gnu::classpath::jdwp;
+ VMVirtualMachine::initialize ();
+ Jdwp *jdwp = new Jdwp ();
+ jdwp->setDaemon (true);
+ jdwp->configure (JvNewStringLatin1 (jdwpOptions));
+ jdwp->start ();
+
+ // Wait for JDWP to initialize and start
+ jdwp->join ();
+ }
- if (is_jar)
+ // Send VMInit
+ if (JVMTI_REQUESTED_EVENT (VMInit))
+ _Jv_JVMTI_PostEvent (JVMTI_EVENT_VM_INIT, main_thread);
+ }
+ catch (java::lang::Throwable *t)
{
- // 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.getMain.
- _Jv_Jar_Class_Path = strdup (name);
- jstring jar_name = JvNewStringLatin1 (name);
- // FirstThread.getMain extracts the main class name.
- class_name = gnu::gcj::runtime::FirstThread::getMain (jar_name);
-
- // 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;
+ java::lang::System::err->println (JvNewStringLatin1
+ ("Exception during runtime initialization"));
+ t->printStackTrace();
+ if (runtime)
+ java::lang::Runtime::exitNoChecksAccessor (1);
+ // In case the runtime creation failed.
+ ::exit (1);
}
- else
- class_name = JvNewStringLatin1 (name);
- arg_vec = JvConvertArgv (argc - 1, argv + 1);
+ _Jv_ThreadRun (main_thread);
- if (class_name)
+ // Send VMDeath
+ if (JVMTI_REQUESTED_EVENT (VMDeath))
{
- runFirst(java::lang::Class::forName (class_name), arg_vec);
- _Jv_ThreadWait ();
+ java::lang::Thread *thread = java::lang::Thread::currentThread ();
+ JNIEnv *jni_env = _Jv_GetCurrentJNIEnv ();
+ _Jv_JVMTI_PostEvent (JVMTI_EVENT_VM_DEATH, thread, jni_env);
}
- int status = (int) java::lang::ThreadGroup::had_uncaught_exception;
+ // If we got here then something went wrong, as MainThread is not
+ // supposed to terminate.
+ ::exit (1);
+}
- java::lang::Runtime::getRuntime ()->exit (status);
+void
+_Jv_RunMain (jclass klass, const char *name, int argc, const char **argv,
+ bool is_jar)
+{
+ _Jv_RunMain (NULL, klass, name, argc, argv, is_jar);
+}
+
+void
+JvRunMain (jclass klass, int argc, const char **argv)
+{
+ _Jv_RunMain (klass, NULL, argc, argv, false);
+}
+
+void
+JvRunMainName (const char *name, int argc, const char **argv)
+{
+ _Jv_RunMain (NULL, name, argc, argv, false);
}
\f
// Parse a string and return a heap size.
static size_t
-parse_heap_size (const char *spec)
+parse_memory_size (const char *spec)
{
char *end;
unsigned long val = strtoul (spec, &end, 10);
void
_Jv_SetInitialHeapSize (const char *arg)
{
- size_t size = parse_heap_size (arg);
+ size_t size = parse_memory_size (arg);
_Jv_GCSetInitialHeapSize (size);
}
void
_Jv_SetMaximumHeapSize (const char *arg)
{
- size_t size = parse_heap_size (arg);
+ size_t size = parse_memory_size (arg);
_Jv_GCSetMaximumHeapSize (size);
}
-\f
+void
+_Jv_SetStackSize (const char *arg)
+{
+ size_t size = parse_memory_size (arg);
+ gcj::stack_size = size;
+}
void *
_Jv_Malloc (jsize size)
_Jv_divI (jint dividend, jint divisor)
{
if (__builtin_expect (divisor == 0, false))
- _Jv_ThrowSignal (arithexception);
+ {
+ java::lang::ArithmeticException *arithexception
+ = new java::lang::ArithmeticException (JvNewStringLatin1 ("/ by zero"));
+ throw arithexception;
+ }
if (dividend == (jint) 0x80000000L && divisor == -1)
return dividend;
_Jv_remI (jint dividend, jint divisor)
{
if (__builtin_expect (divisor == 0, false))
- _Jv_ThrowSignal (arithexception);
+ {
+ java::lang::ArithmeticException *arithexception
+ = new java::lang::ArithmeticException (JvNewStringLatin1 ("/ by zero"));
+ throw arithexception;
+ }
if (dividend == (jint) 0x80000000L && divisor == -1)
return 0;
-
+
return dividend % divisor;
}
_Jv_divJ (jlong dividend, jlong divisor)
{
if (__builtin_expect (divisor == 0, false))
- _Jv_ThrowSignal (arithexception);
-
+ {
+ java::lang::ArithmeticException *arithexception
+ = new java::lang::ArithmeticException (JvNewStringLatin1 ("/ by zero"));
+ throw arithexception;
+ }
+
if (dividend == (jlong) 0x8000000000000000LL && divisor == -1)
return dividend;
_Jv_remJ (jlong dividend, jlong divisor)
{
if (__builtin_expect (divisor == 0, false))
- _Jv_ThrowSignal (arithexception);
-
+ {
+ java::lang::ArithmeticException *arithexception
+ = new java::lang::ArithmeticException (JvNewStringLatin1 ("/ by zero"));
+ throw arithexception;
+ }
+
if (dividend == (jlong) 0x8000000000000000LL && divisor == -1)
return 0;
return dividend % divisor;
}
+
+\f
+
+// Return true if SELF_KLASS can access a field or method in
+// OTHER_KLASS. The field or method's access flags are specified in
+// FLAGS.
+jboolean
+_Jv_CheckAccess (jclass self_klass, jclass other_klass, jint flags)
+{
+ using namespace java::lang::reflect;
+ return ((self_klass == other_klass)
+ || ((flags & Modifier::PUBLIC) != 0)
+ || (((flags & Modifier::PROTECTED) != 0)
+ && _Jv_IsAssignableFromSlow (self_klass, other_klass))
+ || (((flags & Modifier::PRIVATE) == 0)
+ && _Jv_ClassNameSamePackage (self_klass->name,
+ other_klass->name)));
+}
+
+// Prepend GCJ_VERSIONED_LIBDIR to a module search path stored in a C
+// char array, if the path is not already prefixed by
+// GCJ_VERSIONED_LIBDIR. Return a newly JvMalloc'd char buffer. The
+// result should be freed using JvFree.
+char*
+_Jv_PrependVersionedLibdir (char* libpath)
+{
+ char* retval = 0;
+
+ if (libpath && libpath[0] != '\0')
+ {
+ if (! strncmp (libpath,
+ GCJ_VERSIONED_LIBDIR,
+ sizeof (GCJ_VERSIONED_LIBDIR) - 1))
+ {
+ // LD_LIBRARY_PATH is already prefixed with
+ // GCJ_VERSIONED_LIBDIR.
+ retval = (char*) _Jv_Malloc (strlen (libpath) + 1);
+ strcpy (retval, libpath);
+ }
+ else
+ {
+ // LD_LIBRARY_PATH is not prefixed with
+ // GCJ_VERSIONED_LIBDIR.
+ char path_sep[2];
+ path_sep[0] = (char) _Jv_platform_path_separator;
+ path_sep[1] = '\0';
+ jsize total = ((sizeof (GCJ_VERSIONED_LIBDIR) - 1)
+ + 1 /* path separator */ + strlen (libpath) + 1);
+ retval = (char*) _Jv_Malloc (total);
+ strcpy (retval, GCJ_VERSIONED_LIBDIR);
+ strcat (retval, path_sep);
+ strcat (retval, libpath);
+ }
+ }
+ else
+ {
+ // LD_LIBRARY_PATH was not specified or is empty.
+ retval = (char*) _Jv_Malloc (sizeof (GCJ_VERSIONED_LIBDIR));
+ strcpy (retval, GCJ_VERSIONED_LIBDIR);
+ }
+
+ return retval;
+}
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