diff options
Diffstat (limited to 'user/jkoenig')
| -rw-r--r-- | user/jkoenig/java.mdwn | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/user/jkoenig/java.mdwn b/user/jkoenig/java.mdwn index 5702a0f2..6aeef9fe 100644 --- a/user/jkoenig/java.mdwn +++ b/user/jkoenig/java.mdwn @@ -60,6 +60,12 @@ I have modified libc0.3 to include a `deb-symbols(5)` file so that we get an accurate libc dependency in `hurd` and other packages when the symbols in question are pulled in. +[[hurd/libthreads]] (cthreads library) will not be changed. There's no reason +why its behavior should change, whereas for [[libpthread]] it's needed for +conformance. Patches posted on 2011-05-25, but there's a more recent one in +the modified hurd package (adds `_hurd_sigstate_delete` and removes the weak +symbols). + Another issue which came up with OpenJDK is the expansion by the dynamic linker of `$ORIGIN` in the `RPATH` header, see below. @@ -77,8 +83,8 @@ and new ones will be added on top of it. * Test patches: in progress, [[jkoenig]], Svante. More volunteers welcome, of course. - * If [[jkoenig]] thinks it's mature enough: should ask Samuel to test this - (that is, only the refactoring patches for starters?) on the buildds. + * If [[jkoenig]] thinks it's mature enough: should ask + [[Samuel|samuelthibault]] to test these patches on the buildds. * Get patches reviewed (Roland?), and integrated into official sources: [!] [[tschwinge]]. @@ -87,11 +93,12 @@ and new ones will be added on top of it. moved either into the appropriate glibc or Hurd documentation files/reference manuals, or to [[glibc/signal]]. - * libthreads (cthreads) integration. + * `SA_SIGINFO` patche is based on [[Samuel|samuelthibault]]'s earlier work. + Thus, have him review the new patch? - * [[tschwinge]] suggests to leave them as-is? + * Perhaps have a look at `SA_NOCLDWAIT`. - * [[libpthread]] integration. + * Which numeric values to use for `SA_SIGINFO` (and `SA_NOCLDWAIT`)? ### Port OpenJDK @@ -105,6 +112,11 @@ should not be too hard. If that fails we can fall back on Shark (a portable alternative JIT which uses LLVM). +Complexity of porting HotSpot: probably low. The complex things should be +arch- rather than OS-specific. Not many Linux-specific interfaces used. +Garbage collection/memory management, etc. and/or most of other Linux-specific +interfaces are already dealt with for the zero build. + The dynamic linker issue is as follows. An executable-specific search path can be provided in the ELF RPATH header. RPATH directories can include the special string `$ORIGIN`, @@ -128,11 +140,19 @@ by building on [[pochu]]'s `file_exec_file_name()` I have succeeded in building a Hotspot-enabled `libjvm.so`, although the current toolchain issues +(*Hurd OS ABI*) have so far prevented me from testing it. ##### Open Items + * [!] [[tschwinge]] to have a look at [[pochu]]'s `file_exec_file_name()` + patches, whether it's generally the right idea. + + * Assuming it is, continue with getting `$ORIGIN` working. + + * [!] [[Samuel|samuelthibault]]/[[tschwinge]]/[[jkoenig]]: *Hurd OS ABI*. + * They seem to have a rather heavy-weight process for such projects: confer <http://mail.openjdk.java.net/pipermail/announce/2011-January/000092.html>, for example. Do we need this, too? |