We disabled the unicore32-linux-user in commit 5e2b40f7271cf9d
in 2016, due to a problem with the syscall ABI it implemented
being out of date and out of sync with the mainline kernel.
In the intervening year and a half there have been no proposals
to fix these problems so that we could re-enable it. This
patchset removes the 750 lines of dead code from linux-user.
(I suggested this in
https://lists.gnu.org/archive/html/qemu-devel/2018-02/msg06634.html
and there were no objections.)

The second patch is a cleanup we can make as a result, since
with unicore32 gone all our targets implement signal handling:
we can remove the default "not implemented" stub functions.
You could argue that these might be helpful for future new targets,
but IMHO signal handling support is too important to allow a
hypothetical new target to silently get away without implementing
it.  For initial development it's easy enough to stub out the
per-architecture functions, and then we will have a clear view of
which targets (if any) don't have the signal handling implemented
yet, and the missing feature will show up in code review.

thanks
-- PMM


Peter Maydell (2):
  linux-user: Drop unicore32 code
  linux-user: Remove the unused "not implemented" signal handling stubs

 linux-user/qemu.h                     |   5 +-
 linux-user/syscall_defs.h             |   6 +-
 linux-user/unicore32/syscall_nr.h     | 371 ----------------------------------
 linux-user/unicore32/target_cpu.h     |  27 ---
 linux-user/unicore32/target_elf.h     |  14 --
 linux-user/unicore32/target_signal.h  |  30 ---
 linux-user/unicore32/target_structs.h |  58 ------
 linux-user/unicore32/target_syscall.h |  62 ------
 linux-user/unicore32/termbits.h       |   2 -
 linux-user/elfload.c                  |  72 -------
 linux-user/main.c                     |  99 +--------
 linux-user/signal.c                   |  32 +--
 12 files changed, 7 insertions(+), 771 deletions(-)
 delete mode 100644 linux-user/unicore32/syscall_nr.h
 delete mode 100644 linux-user/unicore32/target_cpu.h
 delete mode 100644 linux-user/unicore32/target_elf.h
 delete mode 100644 linux-user/unicore32/target_signal.h
 delete mode 100644 linux-user/unicore32/target_structs.h
 delete mode 100644 linux-user/unicore32/target_syscall.h
 delete mode 100644 linux-user/unicore32/termbits.h

-- 
2.16.2