[PATCH v5 00/37] bsd-user: arm (32-bit) support

[Warner Losh <imp@bsdimp.com>]

This series of patches brings in 32-bit arm support for bsd-user.  It implements
all the bits needed to do image activation, signal handling, stack management
and threading. This allows us to get to the "Hello World" level. The arm and x86
code are now the same as in the bsd-user fork. For full context, the fork is at
https://github.com/qemu-bsd-user/qemu-bsd-user/tree/blitz (though the the recent
sig{bus,segv} needed updates are incomplete).

v5 changes:
   o Moved to using the CPUArchState typedef and move
     set_sigtramp_args, get_mcontext, set_mcontext, and
     get_ucontext_sigreturn prototypes to
     bsd-user/freebsd/target_os_ucontext.h
   o Fix issues with arm's set_mcontext related to masking
     and remove an unnecessary check.

We're down to only one hunk needing review:
    bsd-user/arm/target_arch_signal.c: arm set_mcontext

Warnings that should be ignored:
   o make checkpatch has a couple of complaints about the comments for the
     signal trampoline, since it's a false positive IMHO.
WARNING: Block comments use a leading /* on a separate line
+    /* 8 */ sys_sigreturn,
WARNING: Block comments use a leading /* on a separate line
+    /* 9 */ sys_exit

Warner Losh (37):
  bsd-user/mips*: Remove mips support
  bsd-user/freebsd: Create common target_os_ucontext.h file
  bsd-user: create a per-arch signal.c file
  bsd-user/i386/target_arch_signal.h: Remove target_sigcontext
  bsd-user/i386/target_arch_signal.h: use new target_os_ucontext.h
  bsd-user/i386/target_arch_signal.h: Update mcontext_t to match FreeBSD
  bsd-user/i386: Move the inlines into signal.c
  bsd-user/x86_64/target_arch_signal.h: Remove target_sigcontext
  bsd-user/x86_64/target_arch_signal.h: use new target_os_ucontext.h
  bsd-user/x86_64/target_arch_signal.h: Fill in mcontext_t
  bsd-user/x86_64: Move functions into signal.c
  bsd-user/target_os_signal.h: Move signal prototypes to
    target_os_ucontext.h
  bsd-user/arm/target_arch_sysarch.h: Use consistent include guards
  bsd-user/arm/target_syscall.h: Add copyright and update name
  bsd-user/arm/target_arch_cpu.c: Target specific TLS routines
  bsd-user/arm/target_arch_cpu.h: CPU Loop definitions
  bsd-user/arm/target_arch_cpu.h: Implement target_cpu_clone_regs
  bsd-user/arm/target_arch_cpu.h: Dummy target_cpu_loop implementation
  bsd-user/arm/target_arch_cpu.h: Implement trivial EXCP exceptions
  bsd-user/arm/target_arch_cpu.h: Implement data abort exceptions
  bsd-user/arm/target_arch_cpu.h: Implement system call dispatch
  bsd-user/arm/target_arch_reg.h: Implement core dump register copying
  bsd-user/arm/target_arch_vmparam.h: Parameters for arm address space
  bsd-user/arm/target_arch_sigtramp.h: Signal Trampoline for arm
  bsd-user/arm/target_arch_thread.h: Routines to create and switch to a
    thread
  bsd-user/arm/target_arch_elf.h: arm defines for ELF
  bsd-user/arm/target_arch_elf.h: arm get hwcap
  bsd-user/arm/target_arch_elf.h: arm get_hwcap2 impl
  bsd-user/arm/target_arch_signal.h: arm specific signal registers and
    stack
  bsd-user/arm/target_arch_signal.h: arm machine context and trapframe
    for signals
  bsd-user/arm/target_arch_signal.h: Define size of *context_t
  bsd-user/arm/signal.c: arm set_sigtramp_args
  bsd-user/arm/signal.c: arm get_mcontext
  bsd-user/arm/signal.c: arm set_mcontext
  bsd-user/arm/signal.c: arm get_ucontext_sigreturn
  bsd-user/freebsd/target_os_ucontext.h: Require TARGET_*CONTEXT_SIZE
  bsd-user: add arm target build

 bsd-user/arm/signal.c                 | 196 ++++++++++++++++++++++++
 bsd-user/arm/target_arch.h            |  28 ++++
 bsd-user/arm/target_arch_cpu.c        |  39 +++++
 bsd-user/arm/target_arch_cpu.h        | 211 ++++++++++++++++++++++++++
 bsd-user/arm/target_arch_elf.h        | 128 ++++++++++++++++
 bsd-user/arm/target_arch_reg.h        |  60 ++++++++
 bsd-user/arm/target_arch_signal.h     |  88 +++++++++++
 bsd-user/arm/target_arch_sigtramp.h   |  49 ++++++
 bsd-user/arm/target_arch_sysarch.h    |   6 +-
 bsd-user/arm/target_arch_thread.h     |  82 ++++++++++
 bsd-user/arm/target_arch_vmparam.h    |  48 ++++++
 bsd-user/arm/target_syscall.h         |  27 +++-
 bsd-user/freebsd/target_os_signal.h   |   3 -
 bsd-user/freebsd/target_os_ucontext.h |  44 ++++++
 bsd-user/i386/signal.c                |  55 +++++++
 bsd-user/i386/target_arch_signal.h    |  95 ++++++------
 bsd-user/mips/target_arch_sysarch.h   |  69 ---------
 bsd-user/mips/target_syscall.h        |  52 -------
 bsd-user/mips64/target_arch_sysarch.h |  69 ---------
 bsd-user/mips64/target_syscall.h      |  53 -------
 bsd-user/x86_64/signal.c              |  55 +++++++
 bsd-user/x86_64/target_arch_signal.h  | 103 +++++++------
 configs/targets/arm-bsd-user.mak      |   2 +
 meson.build                           |   2 +-
 24 files changed, 1214 insertions(+), 350 deletions(-)
 create mode 100644 bsd-user/arm/signal.c
 create mode 100644 bsd-user/arm/target_arch.h
 create mode 100644 bsd-user/arm/target_arch_cpu.c
 create mode 100644 bsd-user/arm/target_arch_cpu.h
 create mode 100644 bsd-user/arm/target_arch_elf.h
 create mode 100644 bsd-user/arm/target_arch_reg.h
 create mode 100644 bsd-user/arm/target_arch_signal.h
 create mode 100644 bsd-user/arm/target_arch_sigtramp.h
 create mode 100644 bsd-user/arm/target_arch_thread.h
 create mode 100644 bsd-user/arm/target_arch_vmparam.h
 create mode 100644 bsd-user/freebsd/target_os_ucontext.h
 create mode 100644 bsd-user/i386/signal.c
 delete mode 100644 bsd-user/mips/target_arch_sysarch.h
 delete mode 100644 bsd-user/mips/target_syscall.h
 delete mode 100644 bsd-user/mips64/target_arch_sysarch.h
 delete mode 100644 bsd-user/mips64/target_syscall.h
 create mode 100644 bsd-user/x86_64/signal.c
 create mode 100644 configs/targets/arm-bsd-user.mak

-- 
2.33.0