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[PATCH v2 00/30] bsd-user: arm (32-bit) support
From: |
Warner Losh |
Subject: |
[PATCH v2 00/30] bsd-user: arm (32-bit) support |
Date: |
Tue, 2 Nov 2021 16:52:18 -0600 |
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 and also to
satisfy all linking requirements. I've sliced up the current bsd-user fork
versions of all this code into what I hope are right-sized reviewable chunks.
make checkpatch has a couple of complaints about the comments for the signal
trampoline:
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
that I think should be ignored.
This also adds stubs necessary for building.
V2 improves target_arch_signal.h in a number of ways
o match mcontext to FreeBSD/arm kernel (we'd used mips mcontext
which was originally copied from arm so things mostly worked)
o support thumb execution better (in the fork A32 -> T32 and
vice versa, even with signals, not works, here hello T32 and
A32 programs now work).
o common ucontext now implemented.
o patches with substantial changes have had the reviewed by
removed.
o Also remove target_sigcontext (FreeBSD's old way of doing
signals) that was discovered as it appeared unused in arm
upstream.
o update x86 to use target_os_ucontext.h, though signals aren't
yet completely supported in x86.
o add cpu_loop_exit_sigsegv and cpu_loop_exit_sigbus stubs that
just abort: bsd-user hadn't been updated so this is the first
patch in the series.
The following still need review:
bsd-user/freebsd: Create common target_os_ucontext.h file
bsd-user/arm/target_arch_signal.h: arm machine context for signals
bsd-user/arm/target_arch_signal.h: arm user context and trapframe for
signals
bsd-user/arm/target_arch_signal.h: arm set_sigtramp_args
bsd-user/arm/target_arch_signal.h: arm get_mcontext
bsd-user/arm/target_arch_signal.h: arm set_mcontext
bsd-user/i386/target_arch_signal.h: Remove target_sigcontext
bsd-user/x86_64/target_arch_signal.h: Remove target_sigcontext
bsd-user/i386/target_arch_signal.h: use new target_os_ucontext.h
bsd-user/x86_64/target_arch_signal.h: use new target_os_ucontext.h
Warner Losh (30):
bsd-user: Add stubs for new signal routines
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/freebsd: Create common target_os_ucontext.h file
bsd-user/arm/target_arch_signal.h: arm specific signal registers and
stack
bsd-user/arm/target_arch_signal.h: arm machine context for signals
bsd-user/arm/target_arch_signal.h: arm user context and trapframe for
signals
bsd-user/arm/target_arch_signal.h: arm set_sigtramp_args
bsd-user/arm/target_arch_signal.h: arm get_mcontext
bsd-user/arm/target_arch_signal.h: arm set_mcontext
bsd-user/arm/target_arch_signal.h: arm get_ucontext_sigreturn
bsd-user: add arm target build
bsd-user/i386/target_arch_signal.h: Remove target_sigcontext
bsd-user/x86_64/target_arch_signal.h: Remove target_sigcontext
bsd-user/i386/target_arch_signal.h: use new target_os_ucontext.h
bsd-user/x86_64/target_arch_signal.h: use new target_os_ucontext.h
bsd-user/arm/target_arch.h | 28 +++
bsd-user/arm/target_arch_cpu.c | 39 ++++
bsd-user/arm/target_arch_cpu.h | 236 +++++++++++++++++++++++
bsd-user/arm/target_arch_elf.h | 128 +++++++++++++
bsd-user/arm/target_arch_reg.h | 60 ++++++
bsd-user/arm/target_arch_signal.h | 266 ++++++++++++++++++++++++++
bsd-user/arm/target_arch_sigtramp.h | 49 +++++
bsd-user/arm/target_arch_sysarch.h | 6 +-
bsd-user/arm/target_arch_thread.h | 80 ++++++++
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 | 26 +++
bsd-user/i386/target_arch_signal.h | 13 +-
bsd-user/signal.c | 21 ++
bsd-user/x86_64/target_arch_signal.h | 13 +-
configs/targets/arm-bsd-user.mak | 2 +
17 files changed, 1011 insertions(+), 34 deletions(-)
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 configs/targets/arm-bsd-user.mak
--
2.33.0
- [PATCH v2 00/30] bsd-user: arm (32-bit) support,
Warner Losh <=
- [PATCH v2 01/30] bsd-user: Add stubs for new signal routines, Warner Losh, 2021/11/02
- [PATCH v2 02/30] bsd-user/arm/target_arch_sysarch.h: Use consistent include guards, Warner Losh, 2021/11/02
- [PATCH v2 03/30] bsd-user/arm/target_syscall.h: Add copyright and update name, Warner Losh, 2021/11/02
- [PATCH v2 04/30] bsd-user/arm/target_arch_cpu.c: Target specific TLS routines, Warner Losh, 2021/11/02
- [PATCH v2 05/30] bsd-user/arm/target_arch_cpu.h: CPU Loop definitions, Warner Losh, 2021/11/02
- [PATCH v2 06/30] bsd-user/arm/target_arch_cpu.h: Implement target_cpu_clone_regs, Warner Losh, 2021/11/02
- [PATCH v2 07/30] bsd-user/arm/target_arch_cpu.h: Dummy target_cpu_loop implementation, Warner Losh, 2021/11/02