[PATCH v3 0/5] linux-user/riscv: add vector state to signal context

[Nicholas Piggin <npiggin@gmail.com>]

Changes in v3:
- Fixed up a bunch of good review comments that Richard made against
  the v1 series here https://lore.kernel.org/all/06afcbdc-28e2-4d13-81d4-26fd257ed8a3@linaro.org/#r
  in particular:
  - Restoring vl/vtype state using CPU accessors rather than stuffing the
    values into the registers directly.
  - Fix ABI types.
  - Fix some confusion with host/guest pointer mapping.
  - Fix error handling to SIGSEGV.
  - Style fixes.
- Fixed build issue without riscv intrinsics header.
- Add some more test cases.

Changes in v2:
- Fix 32-bit compile
- Moved sizeof_rt_sigframe change to its correct patch (patch 2 is the
  one that extends the size of rt_sigframe, patch 3 is adding new
  extended state to the frame which is added dynamically).

This series adds vector state to the linux-user signal handler,
and adds a basic signal handling test case. As a sanity check, I
also verified the signal handling test works in the same way when
run under a real Linux kernel.

Thanks,
Nick

Nicholas Piggin (5):
  tests/tcg/riscv64: Add a user signal handling test
  linux-user/riscv: Allow restore_sigcontext to return error
  linux-user/riscv: Add extended state to sigcontext
  linux-user/riscv: Add vector state to signal context
  tests/tcg/riscv64: Add vector state to signal test

 linux-user/riscv/signal.c                | 281 +++++++++++-
 linux-user/riscv/vdso-asmoffset.h        |   4 +-
 target/riscv/cpu.h                       |   4 +
 target/riscv/csr.c                       |   7 +-
 target/riscv/vector_helper.c             |  19 +-
 tests/tcg/riscv64/Makefile.target        |   5 +
 tests/tcg/riscv64/test-signal-handling.c | 517 +++++++++++++++++++++++
 7 files changed, 807 insertions(+), 30 deletions(-)
 create mode 100644 tests/tcg/riscv64/test-signal-handling.c

-- 
2.51.0