1 ==============================================================================
4 ______________________________________________________________________________
7 If you're new to XWT, you should read the documentation in the order
12 Start here. Includes a map of all other documentation and a
13 description of the directory strucure
15 - The XWT home page [http://www.xwt.org/]
17 - The XWT tutorial [http://www.xwt.org/tutorial.html]
19 Gentle introduction to what XWT is, and how to write
20 .xwt's. Good for anybody who wants to write XWT applications.
22 - The XWT reference [http://www.xwt.org/reference.html]
24 Precise, technical spec of exactly how XWT works. Assumes
25 familiarity with XWT (ie, you've read the tutorial). This is the
26 authoritative source for how an XWT engine should
29 - Javadoc [http://www.xwt.org/javadoc/]
31 The org.xwt.* packages are all documented with javadoc. You
32 should start by reading the package summary for org.xwt.Main,
33 and work your way around from there.
35 - Javasrc [http://www.xwt.org/javasrc]
37 Javasrc generates a syntax-colored and hyperlinked html copy of
41 ______________________________________________________________________________
45 AUTHORS - people involved in developing XWT
47 COPYING - copyright information for all files in this distro
48 TM - trademark information for XWT
49 ant - a unix shell script to launch ant
50 bin/ - all binary stuff generated by ant builds
51 build.xml - ANT build file
53 lib/ - any third-party binary stuff needed during the build process
54 javago - a copy of the javago post-compilation bytecode inliner
55 ant.jar - the Jakarta project's ANT build tool, including Sun's XML parser
56 netscape.jar - minimal set of classes required for compiling against Netcape's Applet interfaces
57 msjvm.jar - minimal set of classes required for compiling against Microsoft's Applet interfaces
58 javasrc.jar - javasrc, a tool for generating hyperlinked, syntax-colored html from java code
60 src/ - all java source files and xwt sources go here
62 bouncycastle/ - the BouncyCastle Crypto Library
63 mozilla/ - a copy of Rhino, the Mozilla JavaScript interpreter
64 xwt/builtin/ - .xwt's and .png's that are essential to bootstrapping the engine
65 xwt/plat/ - platform-specific code
67 ______________________________________________________________________________
70 *** XWT now requires JDK 1.4 or later to build ***
72 To build, make sure your $JAVA_HOME points to jdk1.4 or later, and type
74 ./ant -Dplat=<platform> <targetname>
76 The name of any class in org.xwt.plat is a valid <platform>; here is a
77 list as of 20-Mar-2002:
79 Win32 - Windows 95 / NT4 or later
80 Java12 - Any Java 1.2+ compliant JVM
84 build - builds a binary for the selected platform
86 The following targets do not require that you specify a platform:
88 compile - compiles all .java's to .class'es
89 clean - empties bin/ and compiled binaries in dist/
92 ______________________________________________________________________________
95 - WARNING: Jikes 1.16 has a bug which will cause it to generate
96 corrupt .class files; you must downgrade to 1.15 in order to compile
99 - If you only want to build the JVM version of XWT, delete these three
102 xwt/src/org/xwt/plat/Win32.java
103 xwt/src/org/xwt/plat/POSIX.java
104 xwt/src/org/xwt/plat/GCJ.java
106 This will allow XWT to build correctly *without* gcc 3.1. Otherwise,
107 you must compile and install gcc 3.1.
110 - The Win32 native version of XWT can ONLY be built with the very
111 latest pre-release of GCC 3.3. You can follow the steps below to
112 create a cross-compiler from linux to Win32.
114 If the steps below fail, try adding "-D 11-Oct-2002" to the cvs
115 checkout line; 11-Oct-2002 was the last date on which the compiler
116 was known to work. Please don't do this unless you have attempted
117 without it, however, since it puts additional strain on the gcc cvs
120 There are also three patches at the end of this file which can be
121 applied to the branch -- the first fixes an inet_addr() bug on
122 Win32, the second fixes a garbage collector bug, and the third
123 enables stack traces.
125 # create an install area
127 export PREFIX=/usr/local/gcc
128 export CC=/usr/bin/gcc
131 export PATH=$PATH:$PREFIX/bin
133 sudo mkdir $PREFIX/i686-pc-mingw32/
135 wget http://telia.dl.sourceforge.net/sourceforge/mingw/MinGW-1.1.tar.gz
136 sudo tar -C $PREFIX/i686-pc-mingw32/ -xvzf MinGW-1.1.tar.gz
138 wget ftp://ftp.gnu.org/gnu/binutils/binutils-2.11.2.tar.gz
139 tar xzvf binutils-2.11.2.tar.gz
141 ./configure --target=i686-pc-mingw32 --prefix=$PREFIX
146 cvs -d :pserver:anoncvs@subversions.gnu.org:/cvsroot/gcc co -rgcc-3_1-branch gcc
151 --target=i686-pc-mingw32 \
152 --host=i686-pc-linux-gnu \
153 --enable-languages=c,c++,java \
155 --with-as=$PREFIX/i686-pc-mingw32/bin/as \
156 --with-ld=$PREFIX/i686-pc-mingw32/bin/ld \
160 --enable-gc-type=boehm \
162 --enable-threads=win32 \
163 --enable-hash-synchronization \
164 --disable-interpreter \
165 --enable-sjlj-exceptions
170 - The Linux native version can also be built with the latest
171 prerelease of gcj 3.3. You should configure your compiler with:
175 --enable-languages=c,c++,java \
178 --enable-threads=posix \
179 --enable-hash-synchronization \
181 --disable-interpreter
184 ______________________________________________________________________________
187 ** THIS DOESN'T WORK YET **
189 Ant takes a long time to start up, mainly because it has to load a
190 JVM. If you compile ant to native code using GCJ, it will load much
191 more quickly. So far, this only works on Linux.
195 jar xvf ~/xwt/lib/ant.jar
196 for A in `find * -name \*.properties -or -name \*.txt -or -name \*.mf`
197 do gcj -c --resource $A $A -o $A.o
199 CLASSPATH= gcj --main=org.apache.tools.ant.Main \
200 `find . -name \*.class -or -name \*.o` -o ant
204 ______________________________________________________________________________
207 Index: java/net/natInetAddress.cc
208 ===================================================================
209 RCS file: /cvs/gcc/gcc/libjava/java/net/natInetAddress.cc,v
210 retrieving revision 1.18.18.1
211 diff -u -r1.18.18.1 natInetAddress.cc
212 --- java/net/natInetAddress.cc 4 Mar 2002 20:02:19 -0000 1.18.18.1
213 +++ java/net/natInetAddress.cc 27 May 2002 22:54:40 -0000
218 +#include <platform.h>
222 Index: include/win32.h
223 ===================================================================
224 RCS file: /cvs/gcc/gcc/libjava/include/win32.h,v
225 retrieving revision 1.3.8.5
226 diff -u -r1.3.8.5 win32.h
227 --- include/win32.h 24 Apr 2002 01:04:45 -0000 1.3.8.5
228 +++ include/win32.h 27 May 2002 22:54:40 -0000
230 ARRAY and return the exact number of values stored. */
231 extern int backtrace (void **__array, int __size);
233 +// configure cannot correctly detect inet_addr due to Win32's
234 +// oddball header naming scheme
235 +#define HAVE_INET_ADDR
237 #endif /* __JV_WIN32_H__ */
241 ______________________________________________________________________________
244 Index: win32_threads.c
245 ===================================================================
246 RCS file: /cvs/gcc/gcc/boehm-gc/win32_threads.c,v
247 retrieving revision 1.9.2.2
248 diff -u -r1.9.2.2 win32_threads.c
249 --- win32_threads.c 29 Jun 2002 17:29:51 -0000 1.9.2.2
250 +++ win32_threads.c 2 Jul 2002 18:10:02 -0000
252 (LPCONTEXT)&thread_table[i].context))
253 ABORT("GetThreadContext failed");
255 - if (thread_table[i].context.Esp >= (DWORD)thread_table[i].stack
256 - || thread_table[i].context.Esp < (DWORD)bottom)
257 - ABORT("Thread stack pointer out of range");
258 - GC_push_one ((word) thread_table[i].context.Edi);
259 + GC_push_one ((word) thread_table[i].context.Edi);
260 GC_push_one ((word) thread_table[i].context.Esi);
261 GC_push_one ((word) thread_table[i].context.Ebp);
262 GC_push_one ((word) thread_table[i].context.Ebx);
266 ______________________________________________________________________________
267 Throwable.printStackTrace() patch
270 ===================================================================
271 RCS file: /cvs/gcc/gcc/libjava/java/lang/Class.h,v
272 retrieving revision 1.43
273 diff -u -r1.43 Class.h
274 --- Class.h 21 Dec 2001 19:47:50 -0000 1.43
275 +++ Class.h 24 Apr 2002 03:06:14 -0000
277 friend void _Jv_LayoutVTableMethods (jclass klass);
278 friend void _Jv_SetVTableEntries (jclass, _Jv_VTable *);
279 friend void _Jv_MakeVTable (jclass);
280 + friend JArray<java::lang::reflect::Method*>* _Jv_GetAllMethods();
282 // Return array class corresponding to element type KLASS, creating it if
284 Index: ClassLoader.java
285 ===================================================================
286 RCS file: /cvs/gcc/gcc/libjava/java/lang/ClassLoader.java,v
287 retrieving revision 1.16
288 diff -u -r1.16 ClassLoader.java
289 --- ClassLoader.java 7 Dec 2001 23:34:12 -0000 1.16
290 +++ ClassLoader.java 24 Apr 2002 03:06:14 -0000
292 // Default to returning null. Derived classes implement this.
296 + static native java.lang.reflect.Method[] getAllMethods();
297 + static native long[] getAllMethodAddrs();
300 Index: Throwable.java
301 ===================================================================
302 RCS file: /cvs/gcc/gcc/libjava/java/lang/Throwable.java,v
303 retrieving revision 1.10
304 diff -u -r1.10 Throwable.java
305 --- Throwable.java 24 Feb 2001 03:52:49 -0000 1.10
306 +++ Throwable.java 24 Apr 2002 03:06:14 -0000
307 @@ -123,21 +123,64 @@
308 printStackTrace (writer);
311 + private native static long longFromStackTraceBytes(byte[] stackTrace, int i);
313 public void printStackTrace (PrintWriter wr)
317 - CPlusPlusDemangler cPlusPlusFilter = new CPlusPlusDemangler (wr);
318 - PrintWriter writer = new PrintWriter (cPlusPlusFilter);
319 - printRawStackTrace (writer);
321 - if (cPlusPlusFilter.written == 0) // The demangler has failed...
322 - printRawStackTrace (wr);
325 + CPlusPlusDemangler cPlusPlusFilter = new CPlusPlusDemangler (wr);
326 + PrintWriter writer = new PrintWriter (cPlusPlusFilter);
327 + printRawStackTrace (writer);
329 + if (cPlusPlusFilter.written > 0) return;
331 + catch (Exception e1)
335 + wr.println(toString());
336 + if (stackTrace == null) {
340 - catch (Exception e1)
342 - printRawStackTrace (wr);
344 + long[] allAddrs = ClassLoader.getAllMethodAddrs();
345 + java.lang.reflect.Method[] meths = ClassLoader.getAllMethods();
347 + // FIXME: assumes little endian
348 + for(int i=0; i<stackTrace.length; i++) {
349 + long addr = longFromStackTraceBytes(stackTrace, i);
350 + if (addr == 0) break;
352 + int whichMethod = -1;
353 + for(int j=0; j<allAddrs.length; j++) {
354 + if (allAddrs[j] <= addr &&
355 + (whichMethod == -1 || allAddrs[whichMethod] < allAddrs[j])) {
360 + if (whichMethod == -1) {
361 + wr.println("[" + Long.toString(addr, 16) + "] " + "??");
365 + if (meths[whichMethod].getDeclaringClass().getName().equals("gnu.gcj.runtime.FirstThread") &&
366 + meths[whichMethod].getName().equals("call_main"))
369 + wr.println(" [" + Long.toString(addr, 16) + "] " +
370 + meths[whichMethod].getDeclaringClass().getName() + "." +
371 + meths[whichMethod].getName() + "() " +
372 + "+" + (addr - allAddrs[whichMethod])
375 + if (java.lang.Thread.class.isAssignableFrom(meths[whichMethod].getDeclaringClass()) &&
376 + meths[whichMethod].getName().equals("run"))
383 Index: natClassLoader.cc
384 ===================================================================
385 RCS file: /cvs/gcc/gcc/libjava/java/lang/natClassLoader.cc,v
386 retrieving revision 1.47.8.1
387 diff -u -r1.47.8.1 natClassLoader.cc
388 --- natClassLoader.cc 2 Apr 2002 22:19:55 -0000 1.47.8.1
389 +++ natClassLoader.cc 24 Apr 2002 03:06:14 -0000
391 #include <java/lang/StringBuffer.h>
392 #include <java/io/Serializable.h>
393 #include <java/lang/Cloneable.h>
394 +#include <java/lang/reflect/Method.h>
396 +#include<java/lang/reflect/Constructor.h>
397 +#include<gcj/method.h>
399 // FIXME: remove these.
400 #define CloneableClass java::lang::Cloneable::class$
402 static jclass loaded_classes[HASH_LEN];
404 // This is the root of a linked list of classes
406 +JArray<java::lang::reflect::Method*>*
407 +java::lang::ClassLoader::getAllMethods()
409 + return _Jv_GetAllMethods();
413 +java::lang::ClassLoader::getAllMethodAddrs()
415 + JArray<java::lang::reflect::Method*>* arr = _Jv_GetAllMethods();
416 + java::lang::reflect::Method** el = (java::lang::reflect::Method**)elements(arr);
417 + JArray<jlong>* ret = JvNewLongArray(arr->length);
418 + jlong* retel = (jlong*)elements(ret);
419 + for(int i=0; i<arr->length; i++)
420 + retel[i] = (jlong)((unsigned int)(_Jv_FromReflectedMethod (el[i])->ncode));
424 +JArray<java::lang::reflect::Method*>*
427 + int numMethods = 0;
429 + for(int i=0; i<HASH_LEN; i++)
430 + for(jclass c = loaded_classes[i]; c; c = c->next)
431 + numMethods += c->getDeclaredMethods()->length;
433 + JArray<java::lang::reflect::Method*>* ret =
434 + (JArray<java::lang::reflect::Method*>*)
435 + JvNewObjectArray(numMethods, &java::lang::reflect::Method::class$, NULL);
437 + java::lang::reflect::Method** el = (java::lang::reflect::Method**)elements(ret);
439 + for(int i=0; i<HASH_LEN; i++)
440 + for(jclass c = loaded_classes[i]; c; c = c->next) {
441 + JArray<java::lang::reflect::Method*>* methods = c->getDeclaredMethods();
442 + jint len = methods->length;
443 + java::lang::reflect::Method** meths = (java::lang::reflect::Method**)elements(methods);
444 + for(int j=0; j<len; j++) el[--numMethods] = meths[j];
452 Index: natThrowable.cc
453 ===================================================================
454 RCS file: /cvs/gcc/gcc/libjava/java/lang/natThrowable.cc,v
455 retrieving revision 1.11
456 diff -u -r1.11 natThrowable.cc
457 --- natThrowable.cc 7 Feb 2002 19:26:06 -0000 1.11
458 +++ natThrowable.cc 24 Apr 2002 03:06:14 -0000
463 +#include <platform.h>
465 #ifdef HAVE_EXECINFO_H
466 #include <execinfo.h>
468 #endif /* HAVE_BACKTRACE */
472 +// Returns the i^th call address in the stackTrace member, or 0 if i
473 +// is beyond the end of the trace. This has to be done in C++ because
474 +// the addresses in stackTrace are the same width as the platform's
475 +// pointers (which is unknown to Java code), and stackTrace is a
476 +// byte[] using the platform's endianness (which is unknown to Java
479 +java::lang::Throwable::longFromStackTraceBytes(jbyteArray stackArr, jint i)
481 + if (i * sizeof(void*) > stackArr->length) return 0;
482 + unsigned int* stack = (unsigned int*)elements(stackArr);
483 + return (jlong)stack[i];