Changes for v4:
  * Drop nios2 changes -- I still haven't built a full toolchain.
  * Clean up arm changes.
  * Minur i386 pointer type changes.

Changes for v3:
  * Drop vdsos, reinstate setup_sigtramp for all targets.
  * Incorporate nios2 kuser page emulation, which contains
    the sigtramp for that target.

Changes for v2:
  * Add vdsos for aarch64, arm, i386, riscv.
  * Drop setup_sigtramp for any target with a vdso.
  * Drop arm v1 signal support.
  * Simplify ppc encode_trampoline.


r~


Richard Henderson (25):
  linux-user: Add infrastructure for a signal trampoline page
  linux-user/aarch64: Implement setup_sigtramp
  linux-user/arm: Drop v1 signal frames
  linux-user/arm: Drop "_v2" from symbols in signal.c
  linux-user/arm: Implement setup_sigtramp
  linux-user/alpha: Implement setup_sigtramp
  linux-user/cris: Implement setup_sigtramp
  linux-user/hexagon: Implement setup_sigtramp
  linux-user/hppa: Document non-use of setup_sigtramp
  linux-user/i386: Implement setup_sigtramp
  linux-user/x86_64: Raise SIGSEGV if SA_RESTORER not set
  linux-user/m68k: Implement setup_sigtramp
  linux-user/microblaze: Implement setup_sigtramp
  linux-user/mips: Tidy install_sigtramp
  linux-user/mips: Implement setup_sigtramp
  linux-user/nios2: Document non-use of setup_sigtramp
  linux-user/openrisc: Implement setup_sigtramp
  linux-user/ppc: Simplify encode_trampoline
  linux-user/ppc: Implement setup_sigtramp
  linux-user/riscv: Implement setup_sigtramp
  linux-user/s390x: Implement setup_sigtramp
  linux-user/sh4: Implement setup_sigtramp
  linux-user/sparc: Implement setup_sigtramp
  linux-user/xtensa: Implement setup_sigtramp
  linux-user: Remove default for TARGET_ARCH_HAS_SIGTRAMP_PAGE

 linux-user/aarch64/target_signal.h    |   2 +
 linux-user/alpha/target_signal.h      |   1 +
 linux-user/arm/target_signal.h        |   2 +
 linux-user/cris/target_signal.h       |   2 +
 linux-user/hexagon/target_signal.h    |   2 +
 linux-user/hppa/target_signal.h       |  14 +
 linux-user/i386/target_signal.h       |   2 +
 linux-user/m68k/target_signal.h       |   2 +
 linux-user/microblaze/target_signal.h |   2 +
 linux-user/mips/target_signal.h       |   1 +
 linux-user/mips64/target_signal.h     |   2 +
 linux-user/nios2/target_signal.h      |   3 +
 linux-user/openrisc/target_signal.h   |   2 +
 linux-user/ppc/target_signal.h        |   2 +
 linux-user/riscv/target_signal.h      |   2 +
 linux-user/s390x/target_signal.h      |   2 +
 linux-user/sh4/target_signal.h        |   2 +
 linux-user/signal-common.h            |   6 +
 linux-user/sparc/target_signal.h      |   4 +
 linux-user/x86_64/target_signal.h     |   3 +
 linux-user/xtensa/target_signal.h     |   2 +
 linux-user/aarch64/signal.c           |  34 +-
 linux-user/alpha/signal.c             |  34 +-
 linux-user/arm/signal.c               | 583 +++++++++-----------------
 linux-user/cris/signal.c              |  29 +-
 linux-user/elfload.c                  |  14 +
 linux-user/hexagon/signal.c           |  19 +-
 linux-user/i386/signal.c              |  65 ++-
 linux-user/m68k/signal.c              |  47 +--
 linux-user/microblaze/signal.c        |  24 +-
 linux-user/mips/signal.c              |  39 +-
 linux-user/openrisc/signal.c          |  22 +-
 linux-user/ppc/signal.c               |  40 +-
 linux-user/riscv/signal.c             |  22 +-
 linux-user/s390x/signal.c             |  24 +-
 linux-user/sh4/signal.c               |  40 +-
 linux-user/signal.c                   |   3 +
 linux-user/sparc/signal.c             |  40 +-
 linux-user/xtensa/signal.c            |  56 ++-
 39 files changed, 603 insertions(+), 592 deletions(-)

-- 
2.25.1