Known hppa port issues

["Joseph S. Myers" <joseph at codesourcery dot com>]

Since there seems to be some activity fixing old issues of the hppa port 
being out-of-date with respect to other architectures, here's the current 
version of my list of such issues (this is in addition to anything in 
Bugzilla, and may be incomplete in other ways).

* hppa:

  (a) sysdeps/unix/sysv/linux/hppa/syscalls.list has a
  __connect_internal alias that has been removed for other
  architectures.

  (b) There are no ABI test baselines for hppa.

  (c) hppa still has conditionals on or definitions of obsolete macros
  USE_TLS and USE___THREAD.

  (d) sysdeps/unix/sysv/linux/hppa/bits/mman.h is missing MAP_STACK
  and MAP_HUGETLB.

  (e) sysdeps/unix/sysv/linux/hppa/bits/mman.h is missing
  MADV_HUGEPAGE, MADV_NOHUGEPAGE, MADV_DONTDUMP, MADV_DODUMP and
  MADV_HWPOISON.  If applicable, use bits/mman-linux.h as part of the
  fix.

  (f) sysdeps/unix/sysv/linux/hppa/bits/shm.h is missing SHM_EXEC.

  (g) sysdeps/unix/sysv/linux/hppa/bits/sigaction.h is missing the
  change to define SA_RESTART, SA_NODEFER and SA_RESETHAND if
  __USE_XOPEN2K8.

  (h) sysdeps/unix/sysv/linux/hppa/sys/epoll.h still exists but
  bits/epoll.h should now be provided instead.

  (i) sysdeps/unix/sysv/linux/hppa/sys/eventfd.h still exists but
  bits/eventfd.h should now be provided instead.

  (j) sysdeps/unix/sysv/linux/hppa/sys/inotify.h still exists but
  bits/inotify.h should now be provided instead.

  (k) sysdeps/unix/sysv/linux/hppa/sys/signalfd.h still exists but
  bits/signalfd.h should now be provided instead.

  (l) sysdeps/unix/sysv/linux/hppa/sys/timerfd.h still exists but
  bits/timerfd.h should now be provided instead.

  (m) An entry in libc's sysdeps/unix/sysv/linux/configure.in for hppa
  was removed on 2012-01-07 and a ports update may be needed.  That
  entry may actually have been dead because of the arch_minimum_kernel
  setting in sysdeps/unix/sysv/linux/hppa/nptl/configure.in - but in
  that case, there's the question of whether the
  libc_cv_gcc_unwind_find_fde=yes that was in libc's file for hppa
  should go in the ports version (if that was a correct description of
  old libc binaries on hppa).

  (n) sysdeps/unix/sysv/linux/hppa/kernel-features.h still defines
  __ASSUME_32BITUIDS and __ASSUME_TRUNCATE64_SYSCALL (no longer used).

  (o) There is no c++-types.data for hppa.

  (p) The TLS configure checks should be removed from
  sysdeps/hppa/configure.in, now the rule is that we assume a
  recent-enough binutils and such checks are no longer needed for each
  architecture and have been removed for other architectures.

  (q) __ASSUME_LWS_CAS (definition and uses) should be removed now
  2.6.16 is the global minimum kernel version.

  (r) lll_futex_timed_wait_bitset should be defined for hppa.

  (s) hppa needs a sotruss-lib.c file.

  (t) hppa should use FUTEX_*_REQUEUE_PI as per commit
  8313cb997d2da2465c8560d3164358a68ea1e9ad.

  (u) hppa pthread.h is out of date relative to the
  architecture-independent version (at least, missing the declarations
  of pthread_getattr_default_np and pthread_setattr_default_np).

-- 
Joseph S. Myers
joseph@codesourcery.com