Andrew John Hughes writes: > On Sat, 2004-11-13 at 19:49, Tom Tromey wrote: > > >>>>> "Bojan" == Bojan Antonovic <[EMAIL PROTECTED]> writes: > > > > Bojan> Java 5.0 has some new language extensions. Many (?) of them, like > > Bojan> generics, are compiled in the way that the byte code binary is > > Bojan> compatible to older versions. While extending GCJ to support the new > > Bojan> language extensions can take a while, it should be easier that GIJ > > can > > Bojan> run them. Does anybody know when those new binaries will be > > supported? > > Bojan> Can it be done for GCC 4.0 ? > > > > Here are the minimal changes required to support 1.5 bytecode. > > > > * Make sure we recognize the new class file version number. > > > > * Change the bytecode verifiers to accept "ldc <class>" when the > > bytecode in question came from a 1.5 file. (For the libgcj > > verifier I already have a patch for this, it is in gcjx. It could > > easily be merged.) > > > > * Change the interpreter and the bytecode front end to the compiler > > to recognize this opcode. > > > > This set of changes is pretty easy. > > > > > If this is the case, then is there a good reason for not starting to > include 1.5 changes, that will compile with pre-1.5 compilers, into the > HEAD branch?
I'd like this for gcj, > It seems a shame to not support 1.5 bytecode, largely because it just > calls methods that are absent from GNU Classpath (and, in the case of > some of the most frequent ones, implemented in the generics branch). > > This does, however, conflict with the idea of getting to a 1.0 branch > pretty soon. > > Comments? Make 1.5 bytecode a reqiurement for the 1.0 branch. Andrew. _______________________________________________ Classpath mailing list [EMAIL PROTECTED] http://lists.gnu.org/mailman/listinfo/classpath
