[PATCHv3 00/24] ILP32 support in ARM64

Andrew Pinski
2014-09-03T21:19:36Z

New version with all of the requested changes. Updated to the latest sources.

Notable changes from the previous versions:
VDSO code has been factored out to be easier to understand and easier to maintain.
Move the config option to the last thing that gets added.
Added some extra COMPAT_* macros for core dumping for easier usage.

Andrew Pinski (24):
ARM64: Force LP64 to compile the kernel
ARM64: Rename COMPAT to AARCH32_EL0 in Kconfig
ARM64: Change some CONFIG_COMPAT over to use CONFIG_AARCH32_EL0
instead
ARM64:ILP32: Set kernel_long to long long so we can reuse most of the
same syscalls as LP64
ARM64:UAPI: Set the correct __BITS_PER_LONG for ILP32
Allow for some signal structures to be the same between a 32bit ABI
and the 64bit ABI
ARM64:ILP32: Use the same size and layout of the signal structures
for ILP32 as for LP64
Allow a 32bit ABI to use the naming of the 64bit ABI syscalls to
avoid confusion of not splitting the registers
ARM64:ILP32: Use the same syscall names as LP64
ARM64: Introduce is_a32_task/is_a32_thread and TIF_AARCH32 and use
them in the correct locations
ARM64: Add is_ilp32_compat_task and is_ilp32_compat_thread
ARM64:ILP32: COMPAT_USE_64BIT_TIME is true for ILP32 tasks
ARM64:ILP32: Use the non compat HWCAP for ILP32
ARM64:ILP32 use the standard start_thread for ILP32 so the processor
state is not AARCH32
compat_binfmt_elf: coredump: Allow some core dump macros be
overridden for compat.
ARM64:ILP32: Support core dump for ILP32
ARM64: Add loading of ILP32 binaries
ARM64: Add vdso for ILP32 and use it for the signal return
ptrace: Allow compat to use the native siginfo
ARM64:ILP32: The native siginfo is used instead of the compat siginfo
ARM64:ILP32: Use a seperate syscall table as a few syscalls need to
be using the compat syscalls
ARM64:ILP32: Fix signal return for ILP32 when the user modified the
signal stack
ARM64: Add ARM64_ILP32 to Kconfig
Add documentation about ARM64 ILP32 ABI

Documentation/arm64/ilp32.txt | 57 +++++++
arch/arm64/Kconfig | 15 ++-
arch/arm64/Makefile | 4 +
arch/arm64/include/asm/arch_timer.h | 2 +-
arch/arm64/include/asm/compat.h | 59 ++++++++
arch/arm64/include/asm/elf.h | 100 ++++++++++++-
arch/arm64/include/asm/fpsimd.h | 2 +-
arch/arm64/include/asm/hwcap.h | 2 -
arch/arm64/include/asm/processor.h | 11 ++
arch/arm64/include/asm/ptrace.h | 2 +-
arch/arm64/include/asm/signal32.h | 4 +-
arch/arm64/include/asm/stat.h | 4 +-
arch/arm64/include/asm/syscalls.h | 4 +
arch/arm64/include/asm/thread_info.h | 1 +
arch/arm64/include/asm/unistd.h | 6 +-
arch/arm64/include/asm/vdso.h | 4 +
arch/arm64/include/uapi/asm/bitsperlong.h | 9 +-
arch/arm64/include/uapi/asm/posix_types.h | 8 +-
arch/arm64/include/uapi/asm/siginfo.h | 33 ++++
arch/arm64/include/uapi/asm/signal.h | 34 +++++
arch/arm64/include/uapi/asm/unistd.h | 6 +
arch/arm64/kernel/Makefile | 8 +-
arch/arm64/kernel/asm-offsets.c | 2 +-
arch/arm64/kernel/entry.S | 19 ++-
arch/arm64/kernel/head.S | 2 +-
arch/arm64/kernel/hw_breakpoint.c | 7 +-
arch/arm64/kernel/process.c | 6 +-
arch/arm64/kernel/ptrace.c | 52 +++++--
arch/arm64/kernel/signal.c | 38 +++++-
arch/arm64/kernel/sys_ilp32.c | 195 +++++++++++++++++++++++++
arch/arm64/kernel/traps.c | 4 +-
arch/arm64/kernel/vdso-ilp32/.gitignore | 2 +
arch/arm64/kernel/vdso-ilp32/Makefile | 72 +++++++++
arch/arm64/kernel/vdso-ilp32/vdso-ilp32.S | 33 ++++
arch/arm64/kernel/vdso-ilp32/vdso-ilp32.lds.S | 98 +++++++++++++
arch/arm64/kernel/vdso.c | 74 ++++++++--
fs/compat_binfmt_elf.c | 17 ++
include/linux/compat.h | 4 +
include/uapi/asm-generic/siginfo.h | 17 ++-
include/uapi/asm-generic/signal.h | 27 +++-
include/uapi/asm-generic/unistd.h | 6 +-
kernel/ptrace.c | 25 +++-
42 files changed, 989 insertions(+), 86 deletions(-)
create mode 100644 Documentation/arm64/ilp32.txt
create mode 100644 arch/arm64/kernel/sys_ilp32.c
create mode 100644 arch/arm64/kernel/vdso-ilp32/.gitignore
create mode 100644 arch/arm64/kernel/vdso-ilp32/Makefile
create mode 100644 arch/arm64/kernel/vdso-ilp32/vdso-ilp32.S
create mode 100644 arch/arm64/kernel/vdso-ilp32/vdso-ilp32.lds.S

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1.7.2.5