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
61 jazz/ - jazzlib, which XWT currently uses since libgcj's java.util.zip.* is broken
63 bouncycastle/ - the BouncyCastle Crypto Library
64 mozilla/ - a copy of Rhino, the Mozilla JavaScript interpreter
65 xwt/builtin/ - .xwt's and .png's that are essential to bootstrapping the engine
66 xwt/plat/ - platform-specific code
68 ______________________________________________________________________________
71 *** XWT now requires JDK 1.4 or later to build ***
73 To build, make sure your $JAVA_HOME points to jdk1.4 or later, and type
75 ./ant -Dplat=<platform> <targetname>
77 The name of any class in org.xwt.plat is a valid <platform>; here is a
78 list as of 20-Mar-2002:
80 Win32 - Windows 95 / NT4 or later
81 Java12 - Any Java 1.2+ compliant JVM
85 build - builds a binary for the selected platform
87 The following targets do not require that you specify a platform:
89 compile - compiles all .java's to .class'es
90 clean - empties bin/ and compiled binaries in dist/
93 ______________________________________________________________________________
96 - If you only want to build the JVM version of XWT, delete these three
99 xwt/src/org/xwt/plat/Win32.java
100 xwt/src/org/xwt/plat/POSIX.java
101 xwt/src/org/xwt/plat/GCJ.java
103 This will allow XWT to build correctly *without* gcc 3.1. Otherwise,
104 you must compile and install gcc 3.1.
107 - The Win32 native version of XWT can ONLY be built with the very
108 latest pre-release of GCC 3.1. You can follow the steps below to
109 create a cross-compiler from linux to Win32.
111 If the steps below fail, try adding "-D 20-Mar-2002" to the cvs
112 checkout line; 20-Mar-2002 was the last date on which the compiler
113 was known to work. Please don't do this unless you have attempted
114 without it, however, since it puts additional strain on the gcc cvs
117 There are also two patches at the end of this file which can be
118 applied to the branch -- the first fixes an inet_addr() bug on
119 Win32, the second enables stack traces.
121 # create an install area
123 export PREFIX=/usr/local/gcc
124 export CC=/usr/bin/gcc
127 export PATH=$PATH:$PREFIX/bin
129 sudo mkdir $PREFIX/i686-pc-mingw32/
131 wget http://telia.dl.sourceforge.net/sourceforge/mingw/MinGW-1.1.tar.gz
132 sudo tar -C $PREFIX/i686-pc-mingw32/ -xvzf MinGW-1.1.tar.gz
134 wget ftp://ftp.gnu.org/gnu/binutils/binutils-2.11.2.tar.gz
135 tar xzvf binutils-2.11.2.tar.gz
137 ./configure --target=i686-pc-mingw32 --prefix=$PREFIX
142 cvs -d :pserver:anoncvs@subversions.gnu.org:/cvsroot/gcc co -rgcc-3_1-branch gcc
147 --target=i686-pc-mingw32 \
148 --host=i686-pc-linux-gnu \
149 --enable-languages=c,c++,java \
151 --with-as=$PREFIX/i686-pc-mingw32/bin/as \
152 --with-ld=$PREFIX/i686-pc-mingw32/bin/ld \
156 --enable-gc-type=boehm \
158 --enable-threads=win32 \
159 --disable-hash-synchronization \
160 --disable-interpreter \
161 --enable-sjlj-exceptions
166 - The Linux native version is still experimental. You should configure
171 --enable-languages=c,c++,java \
174 --enable-threads=posix \
175 --enable-hash-synchronization \
177 --disable-interpreter
180 ______________________________________________________________________________
183 ** THIS DOESN'T WORK YET **
185 Ant takes a long time to start up, mainly because it has to load a
186 JVM. If you compile ant to native code using GCJ, it will load much
187 more quickly. So far, this only works on Linux.
191 jar xvf ~/xwt/lib/ant.jar
192 for A in `find * -name \*.properties -or -name \*.txt -or -name \*.mf`
193 do gcj -c --resource $A $A -o $A.o
195 CLASSPATH= gcj --main=org.apache.tools.ant.Main \
196 `find . -name \*.class -or -name \*.o` -o ant
200 ______________________________________________________________________________
203 Index: java/net/natInetAddress.cc
204 ===================================================================
205 RCS file: /cvs/gcc/gcc/libjava/java/net/natInetAddress.cc,v
206 retrieving revision 1.18.18.1
207 diff -u -r1.18.18.1 natInetAddress.cc
208 --- java/net/natInetAddress.cc 4 Mar 2002 20:02:19 -0000 1.18.18.1
209 +++ java/net/natInetAddress.cc 27 May 2002 22:54:40 -0000
214 +#include <platform.h>
218 Index: include/win32.h
219 ===================================================================
220 RCS file: /cvs/gcc/gcc/libjava/include/win32.h,v
221 retrieving revision 1.3.8.5
222 diff -u -r1.3.8.5 win32.h
223 --- include/win32.h 24 Apr 2002 01:04:45 -0000 1.3.8.5
224 +++ include/win32.h 27 May 2002 22:54:40 -0000
226 ARRAY and return the exact number of values stored. */
227 extern int backtrace (void **__array, int __size);
229 +// configure cannot correctly detect inet_addr due to Win32's
230 +// oddball header naming scheme
231 +#define HAVE_INET_ADDR
233 #endif /* __JV_WIN32_H__ */
237 ______________________________________________________________________________
238 Throwable.printStackTrace() patch
241 ===================================================================
242 RCS file: /cvs/gcc/gcc/libjava/java/lang/Class.h,v
243 retrieving revision 1.43
244 diff -u -r1.43 Class.h
245 --- Class.h 21 Dec 2001 19:47:50 -0000 1.43
246 +++ Class.h 24 Apr 2002 03:06:14 -0000
248 friend void _Jv_LayoutVTableMethods (jclass klass);
249 friend void _Jv_SetVTableEntries (jclass, _Jv_VTable *);
250 friend void _Jv_MakeVTable (jclass);
251 + friend JArray<java::lang::reflect::Method*>* _Jv_GetAllMethods();
253 // Return array class corresponding to element type KLASS, creating it if
255 Index: ClassLoader.java
256 ===================================================================
257 RCS file: /cvs/gcc/gcc/libjava/java/lang/ClassLoader.java,v
258 retrieving revision 1.16
259 diff -u -r1.16 ClassLoader.java
260 --- ClassLoader.java 7 Dec 2001 23:34:12 -0000 1.16
261 +++ ClassLoader.java 24 Apr 2002 03:06:14 -0000
263 // Default to returning null. Derived classes implement this.
267 + static native java.lang.reflect.Method[] getAllMethods();
268 + static native long[] getAllMethodAddrs();
271 Index: Throwable.java
272 ===================================================================
273 RCS file: /cvs/gcc/gcc/libjava/java/lang/Throwable.java,v
274 retrieving revision 1.10
275 diff -u -r1.10 Throwable.java
276 --- Throwable.java 24 Feb 2001 03:52:49 -0000 1.10
277 +++ Throwable.java 24 Apr 2002 03:06:14 -0000
278 @@ -123,21 +123,64 @@
279 printStackTrace (writer);
282 + private native static long longFromStackTraceBytes(byte[] stackTrace, int i);
284 public void printStackTrace (PrintWriter wr)
288 - CPlusPlusDemangler cPlusPlusFilter = new CPlusPlusDemangler (wr);
289 - PrintWriter writer = new PrintWriter (cPlusPlusFilter);
290 - printRawStackTrace (writer);
292 - if (cPlusPlusFilter.written == 0) // The demangler has failed...
293 - printRawStackTrace (wr);
296 + CPlusPlusDemangler cPlusPlusFilter = new CPlusPlusDemangler (wr);
297 + PrintWriter writer = new PrintWriter (cPlusPlusFilter);
298 + printRawStackTrace (writer);
300 + if (cPlusPlusFilter.written > 0) return;
302 + catch (Exception e1)
306 + wr.println(toString());
307 + if (stackTrace == null) {
311 - catch (Exception e1)
313 - printRawStackTrace (wr);
315 + long[] allAddrs = ClassLoader.getAllMethodAddrs();
316 + java.lang.reflect.Method[] meths = ClassLoader.getAllMethods();
318 + // FIXME: assumes little endian
319 + for(int i=0; i<stackTrace.length; i++) {
320 + long addr = longFromStackTraceBytes(stackTrace, i);
321 + if (addr == 0) break;
323 + int whichMethod = -1;
324 + for(int j=0; j<allAddrs.length; j++) {
325 + if (allAddrs[j] <= addr &&
326 + (whichMethod == -1 || allAddrs[whichMethod] < allAddrs[j])) {
331 + if (whichMethod == -1) {
332 + wr.println("[" + Long.toString(addr, 16) + "] " + "??");
336 + if (meths[whichMethod].getDeclaringClass().getName().equals("gnu.gcj.runtime.FirstThread") &&
337 + meths[whichMethod].getName().equals("call_main"))
340 + wr.println(" [" + Long.toString(addr, 16) + "] " +
341 + meths[whichMethod].getDeclaringClass().getName() + "." +
342 + meths[whichMethod].getName() + "() " +
343 + "+" + (addr - allAddrs[whichMethod])
346 + if (java.lang.Thread.class.isAssignableFrom(meths[whichMethod].getDeclaringClass()) &&
347 + meths[whichMethod].getName().equals("run"))
354 Index: natClassLoader.cc
355 ===================================================================
356 RCS file: /cvs/gcc/gcc/libjava/java/lang/natClassLoader.cc,v
357 retrieving revision 1.47.8.1
358 diff -u -r1.47.8.1 natClassLoader.cc
359 --- natClassLoader.cc 2 Apr 2002 22:19:55 -0000 1.47.8.1
360 +++ natClassLoader.cc 24 Apr 2002 03:06:14 -0000
362 #include <java/lang/StringBuffer.h>
363 #include <java/io/Serializable.h>
364 #include <java/lang/Cloneable.h>
365 +#include <java/lang/reflect/Method.h>
367 +#include<java/lang/reflect/Constructor.h>
368 +#include<gcj/method.h>
370 // FIXME: remove these.
371 #define CloneableClass java::lang::Cloneable::class$
373 static jclass loaded_classes[HASH_LEN];
375 // This is the root of a linked list of classes
377 +JArray<java::lang::reflect::Method*>*
378 +java::lang::ClassLoader::getAllMethods()
380 + return _Jv_GetAllMethods();
384 +java::lang::ClassLoader::getAllMethodAddrs()
386 + JArray<java::lang::reflect::Method*>* arr = _Jv_GetAllMethods();
387 + java::lang::reflect::Method** el = (java::lang::reflect::Method**)elements(arr);
388 + JArray<jlong>* ret = JvNewLongArray(arr->length);
389 + jlong* retel = (jlong*)elements(ret);
390 + for(int i=0; i<arr->length; i++)
391 + retel[i] = (jlong)((unsigned int)(_Jv_FromReflectedMethod (el[i])->ncode));
395 +JArray<java::lang::reflect::Method*>*
398 + int numMethods = 0;
400 + for(int i=0; i<HASH_LEN; i++)
401 + for(jclass c = loaded_classes[i]; c; c = c->next)
402 + numMethods += c->getDeclaredMethods()->length;
404 + JArray<java::lang::reflect::Method*>* ret =
405 + (JArray<java::lang::reflect::Method*>*)
406 + JvNewObjectArray(numMethods, &java::lang::reflect::Method::class$, NULL);
408 + java::lang::reflect::Method** el = (java::lang::reflect::Method**)elements(ret);
410 + for(int i=0; i<HASH_LEN; i++)
411 + for(jclass c = loaded_classes[i]; c; c = c->next) {
412 + JArray<java::lang::reflect::Method*>* methods = c->getDeclaredMethods();
413 + jint len = methods->length;
414 + java::lang::reflect::Method** meths = (java::lang::reflect::Method**)elements(methods);
415 + for(int j=0; j<len; j++) el[--numMethods] = meths[j];
423 Index: natThrowable.cc
424 ===================================================================
425 RCS file: /cvs/gcc/gcc/libjava/java/lang/natThrowable.cc,v
426 retrieving revision 1.11
427 diff -u -r1.11 natThrowable.cc
428 --- natThrowable.cc 7 Feb 2002 19:26:06 -0000 1.11
429 +++ natThrowable.cc 24 Apr 2002 03:06:14 -0000
434 +#include <platform.h>
436 #ifdef HAVE_EXECINFO_H
437 #include <execinfo.h>
439 #endif /* HAVE_BACKTRACE */
443 +// Returns the i^th call address in the stackTrace member, or 0 if i
444 +// is beyond the end of the trace. This has to be done in C++ because
445 +// the addresses in stackTrace are the same width as the platform's
446 +// pointers (which is unknown to Java code), and stackTrace is a
447 +// byte[] using the platform's endianness (which is unknown to Java
450 +java::lang::Throwable::longFromStackTraceBytes(jbyteArray stackArr, jint i)
452 + if (i * sizeof(void*) > stackArr->length) return 0;
453 + unsigned int* stack = (unsigned int*)elements(stackArr);
454 + return (jlong)stack[i];