From: Yury Norov <ynorov@caviumnetworks.com> To: Catalin Marinas <catalin.marinas@arm.com>, Arnd Bergmann <arnd@arndb.de>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Cc: Yury Norov <ynorov@caviumnetworks.com>, Adam Borowski <kilobyte@angband.pl>, Andreas Schwab <schwab@suse.de>, Andrew Pinski <pinskia@gmail.com>, Bamvor Zhangjian <bamvor.zhangjian@huawei.com>, Chris Metcalf <cmetcalf@ezchip.com>, Chris Metcalf <cmetcalf@mellanox.com>, Florian Weimer <fweimer@redhat.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, James Hogan <james.hogan@imgtec.com>, James Morse <james.morse@arm.com>, Joseph Myers <joseph@codesourcery.com>, Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>, Nathan_Lynch@mentor.com, Prasun.Kapoor@caviumnetworks.com, Ramana Radhakrishnan <ramana.gcc@googlemail.com>, Steve Ellcey <sellcey@caviumnetworks.com>, Alexander Graf <agraf@suse.de>, Mark Brown <broonie@kernel.org>, christoph.muellner@theobroma-systems.com, davem@davemloft.net, Geert Uytterhoeven <geert@linux-m68k.org>, Alexey Klimov <klimov.linux@gmail.com>, linyongting@huawei.com, manuel.montezelo@gmail.com, philipp.tomsich@theobroma-systems.com, schwidefsky@de.ibm.com, szabolcs.nagy@arm.com, zhouchengming1@huawei.com Subject: [PATCH 11/20] arm64: introduce binfmt_elf32.c Date: Mon, 19 Jun 2017 18:49:54 +0300 [thread overview] Message-ID: <20170619155003.13218-12-ynorov@caviumnetworks.com> (raw) In-Reply-To: <20170619155003.13218-1-ynorov@caviumnetworks.com> As we support more than one compat formats, it looks more reasonable to not use fs/compat_binfmt.c. Custom binfmt_elf32.c allows to move aarch32 specific definitions there and make code more maintainable and readable. Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> --- arch/arm64/Kconfig | 1 - arch/arm64/include/asm/elf.h | 30 +++--------------------------- arch/arm64/include/asm/hwcap.h | 2 -- arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/binfmt_elf32.c | 37 +++++++++++++++++++++++++++++++++++++ 5 files changed, 41 insertions(+), 31 deletions(-) create mode 100644 arch/arm64/kernel/binfmt_elf32.c diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 8713a2807582..168ab2cc426b 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1085,7 +1085,6 @@ config AARCH32_EL0 bool "Kernel support for 32-bit EL0" def_bool y depends on ARM64_4K_PAGES || EXPERT - select COMPAT_BINFMT_ELF if BINFMT_ELF select HAVE_UID16 select OLD_SIGSUSPEND3 select COMPAT_OLD_SIGACTION diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index 8f7bafa60d01..2a727658f51c 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -174,39 +174,15 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm, #endif #ifdef CONFIG_COMPAT - #define COMPAT_ELF_ET_DYN_BASE (2 * TASK_SIZE_32 / 3) +#endif /* CONFIG_COMPAT */ +#ifdef CONFIG_AARCH32_EL0 /* AArch32 registers. */ #define COMPAT_ELF_NGREG 18 typedef unsigned int compat_elf_greg_t; typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; - -/* AArch32 EABI. */ -#define EF_ARM_EABI_MASK 0xff000000 -#define compat_elf_check_arch(x) (system_supports_32bit_el0() && \ - ((x)->e_machine == EM_ARM) && \ - ((x)->e_flags & EF_ARM_EABI_MASK)) - -#define compat_start_thread compat_start_thread -/* - * Unlike the native SET_PERSONALITY macro, the compat version inherits - * READ_IMPLIES_EXEC across a fork() since this is the behaviour on - * arch/arm/. - */ -#define COMPAT_SET_PERSONALITY(ex) \ -({ \ - set_bit(TIF_32BIT, ¤t->mm->context.flags); \ - clear_thread_flag(TIF_32BIT_AARCH64); \ - set_thread_flag(TIF_32BIT); \ - }) -#define COMPAT_ARCH_DLINFO -extern int aarch32_setup_vectors_page(struct linux_binprm *bprm, - int uses_interp); -#define compat_arch_setup_additional_pages \ - aarch32_setup_vectors_page - -#endif /* CONFIG_COMPAT */ +#endif /* CONFIG_AARCH32_EL0 */ #endif /* !__ASSEMBLY__ */ diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h index 2c7fc5d89813..99dfd9277559 100644 --- a/arch/arm64/include/asm/hwcap.h +++ b/arch/arm64/include/asm/hwcap.h @@ -47,8 +47,6 @@ #define ELF_HWCAP (elf_hwcap) #ifdef CONFIG_AARCH32_EL0 -#define COMPAT_ELF_HWCAP (compat_elf_hwcap) -#define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2) extern unsigned int compat_elf_hwcap, compat_elf_hwcap2; #endif diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 49fefa42d136..de6c84702d83 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -28,7 +28,7 @@ $(obj)/%.stub.o: $(obj)/%.o FORCE $(call if_changed,objcopy) arm64-obj-$(CONFIG_AARCH32_EL0) += sys32.o kuser32.o signal32.o \ - sys_compat.o entry32.o + sys_compat.o entry32.o binfmt_elf32.o arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o diff --git a/arch/arm64/kernel/binfmt_elf32.c b/arch/arm64/kernel/binfmt_elf32.c new file mode 100644 index 000000000000..ff1f192a738a --- /dev/null +++ b/arch/arm64/kernel/binfmt_elf32.c @@ -0,0 +1,37 @@ +/* + * Support for AArch32 Linux ELF binaries. + */ + +/* AArch32 EABI. */ +#define EF_ARM_EABI_MASK 0xff000000 + +#define compat_start_thread compat_start_thread +/* + * Unlike the native SET_PERSONALITY macro, the compat version inherits + * READ_IMPLIES_EXEC across a fork() since this is the behaviour on + * arch/arm/. + */ +#define COMPAT_SET_PERSONALITY(ex) \ +({ \ + set_bit(TIF_32BIT, ¤t->mm->context.flags); \ + clear_thread_flag(TIF_32BIT_AARCH64); \ + set_thread_flag(TIF_32BIT); \ + }) + +#define COMPAT_ARCH_DLINFO +#define COMPAT_ELF_HWCAP (compat_elf_hwcap) +#define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2) + +#define compat_arch_setup_additional_pages \ + aarch32_setup_vectors_page +struct linux_binprm; +extern int aarch32_setup_vectors_page(struct linux_binprm *bprm, + int uses_interp); + +/* AArch32 EABI. */ +#define compat_elf_check_arch(x) (system_supports_32bit_el0() && \ + ((x)->e_machine == EM_ARM) && \ + ((x)->e_flags & EF_ARM_EABI_MASK)) + + +#include "../../../fs/compat_binfmt_elf.c" -- 2.11.0
WARNING: multiple messages have this Message-ID (diff)
From: ynorov@caviumnetworks.com (Yury Norov) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 11/20] arm64: introduce binfmt_elf32.c Date: Mon, 19 Jun 2017 18:49:54 +0300 [thread overview] Message-ID: <20170619155003.13218-12-ynorov@caviumnetworks.com> (raw) In-Reply-To: <20170619155003.13218-1-ynorov@caviumnetworks.com> As we support more than one compat formats, it looks more reasonable to not use fs/compat_binfmt.c. Custom binfmt_elf32.c allows to move aarch32 specific definitions there and make code more maintainable and readable. Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> --- arch/arm64/Kconfig | 1 - arch/arm64/include/asm/elf.h | 30 +++--------------------------- arch/arm64/include/asm/hwcap.h | 2 -- arch/arm64/kernel/Makefile | 2 +- arch/arm64/kernel/binfmt_elf32.c | 37 +++++++++++++++++++++++++++++++++++++ 5 files changed, 41 insertions(+), 31 deletions(-) create mode 100644 arch/arm64/kernel/binfmt_elf32.c diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 8713a2807582..168ab2cc426b 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1085,7 +1085,6 @@ config AARCH32_EL0 bool "Kernel support for 32-bit EL0" def_bool y depends on ARM64_4K_PAGES || EXPERT - select COMPAT_BINFMT_ELF if BINFMT_ELF select HAVE_UID16 select OLD_SIGSUSPEND3 select COMPAT_OLD_SIGACTION diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index 8f7bafa60d01..2a727658f51c 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -174,39 +174,15 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm, #endif #ifdef CONFIG_COMPAT - #define COMPAT_ELF_ET_DYN_BASE (2 * TASK_SIZE_32 / 3) +#endif /* CONFIG_COMPAT */ +#ifdef CONFIG_AARCH32_EL0 /* AArch32 registers. */ #define COMPAT_ELF_NGREG 18 typedef unsigned int compat_elf_greg_t; typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG]; - -/* AArch32 EABI. */ -#define EF_ARM_EABI_MASK 0xff000000 -#define compat_elf_check_arch(x) (system_supports_32bit_el0() && \ - ((x)->e_machine == EM_ARM) && \ - ((x)->e_flags & EF_ARM_EABI_MASK)) - -#define compat_start_thread compat_start_thread -/* - * Unlike the native SET_PERSONALITY macro, the compat version inherits - * READ_IMPLIES_EXEC across a fork() since this is the behaviour on - * arch/arm/. - */ -#define COMPAT_SET_PERSONALITY(ex) \ -({ \ - set_bit(TIF_32BIT, ¤t->mm->context.flags); \ - clear_thread_flag(TIF_32BIT_AARCH64); \ - set_thread_flag(TIF_32BIT); \ - }) -#define COMPAT_ARCH_DLINFO -extern int aarch32_setup_vectors_page(struct linux_binprm *bprm, - int uses_interp); -#define compat_arch_setup_additional_pages \ - aarch32_setup_vectors_page - -#endif /* CONFIG_COMPAT */ +#endif /* CONFIG_AARCH32_EL0 */ #endif /* !__ASSEMBLY__ */ diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h index 2c7fc5d89813..99dfd9277559 100644 --- a/arch/arm64/include/asm/hwcap.h +++ b/arch/arm64/include/asm/hwcap.h @@ -47,8 +47,6 @@ #define ELF_HWCAP (elf_hwcap) #ifdef CONFIG_AARCH32_EL0 -#define COMPAT_ELF_HWCAP (compat_elf_hwcap) -#define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2) extern unsigned int compat_elf_hwcap, compat_elf_hwcap2; #endif diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 49fefa42d136..de6c84702d83 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -28,7 +28,7 @@ $(obj)/%.stub.o: $(obj)/%.o FORCE $(call if_changed,objcopy) arm64-obj-$(CONFIG_AARCH32_EL0) += sys32.o kuser32.o signal32.o \ - sys_compat.o entry32.o + sys_compat.o entry32.o binfmt_elf32.o arm64-obj-$(CONFIG_FUNCTION_TRACER) += ftrace.o entry-ftrace.o arm64-obj-$(CONFIG_MODULES) += arm64ksyms.o module.o arm64-obj-$(CONFIG_ARM64_MODULE_PLTS) += module-plts.o diff --git a/arch/arm64/kernel/binfmt_elf32.c b/arch/arm64/kernel/binfmt_elf32.c new file mode 100644 index 000000000000..ff1f192a738a --- /dev/null +++ b/arch/arm64/kernel/binfmt_elf32.c @@ -0,0 +1,37 @@ +/* + * Support for AArch32 Linux ELF binaries. + */ + +/* AArch32 EABI. */ +#define EF_ARM_EABI_MASK 0xff000000 + +#define compat_start_thread compat_start_thread +/* + * Unlike the native SET_PERSONALITY macro, the compat version inherits + * READ_IMPLIES_EXEC across a fork() since this is the behaviour on + * arch/arm/. + */ +#define COMPAT_SET_PERSONALITY(ex) \ +({ \ + set_bit(TIF_32BIT, ¤t->mm->context.flags); \ + clear_thread_flag(TIF_32BIT_AARCH64); \ + set_thread_flag(TIF_32BIT); \ + }) + +#define COMPAT_ARCH_DLINFO +#define COMPAT_ELF_HWCAP (compat_elf_hwcap) +#define COMPAT_ELF_HWCAP2 (compat_elf_hwcap2) + +#define compat_arch_setup_additional_pages \ + aarch32_setup_vectors_page +struct linux_binprm; +extern int aarch32_setup_vectors_page(struct linux_binprm *bprm, + int uses_interp); + +/* AArch32 EABI. */ +#define compat_elf_check_arch(x) (system_supports_32bit_el0() && \ + ((x)->e_machine == EM_ARM) && \ + ((x)->e_flags & EF_ARM_EABI_MASK)) + + +#include "../../../fs/compat_binfmt_elf.c" -- 2.11.0
next prev parent reply other threads:[~2017-06-19 15:52 UTC|newest] Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-06-19 15:49 [PATCH v8 00/20] ILP32 for ARM64 Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 01/20] compat ABI: use non-compat openat and open_by_handle_at variants Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 02/20] 32-bit userspace ABI: introduce ARCH_32BIT_OFF_T config option Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 03/20] asm-generic: Drop getrlimit and setrlimit syscalls from default list Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 21:42 ` James Hogan 2017-06-19 21:42 ` James Hogan 2017-06-19 21:58 ` Arnd Bergmann 2017-06-19 21:58 ` Arnd Bergmann 2017-06-19 22:10 ` James Hogan 2017-06-19 22:10 ` James Hogan 2017-06-20 13:37 ` Yury Norov 2017-06-20 13:37 ` Yury Norov 2017-06-20 14:20 ` Arnd Bergmann 2017-06-20 14:20 ` Arnd Bergmann 2017-06-20 14:54 ` Yury Norov 2017-06-20 14:54 ` Yury Norov 2017-06-20 15:27 ` Arnd Bergmann 2017-06-20 15:27 ` Arnd Bergmann 2017-06-20 21:14 ` Palmer Dabbelt 2017-06-20 21:14 ` Palmer Dabbelt 2017-06-20 14:36 ` Yury Norov 2017-06-20 14:36 ` Yury Norov 2017-06-20 14:42 ` Yury Norov 2017-06-20 14:42 ` Yury Norov 2017-06-19 15:49 ` [PATCH 04/20] arm64: ilp32: add documentation on the ILP32 ABI for ARM64 Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 05/20] arm64: rename COMPAT to AARCH32_EL0 in Kconfig Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 06/20] arm64: ensure the kernel is compiled for LP64 Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 07/20] arm64:uapi: set __BITS_PER_LONG correctly for ILP32 and LP64 Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 08/20] thread: move thread bits accessors to separated file Yury Norov 2017-06-19 15:49 ` Yury Norov [not found] ` <mvma8432jsx.fsf@suse.de> 2017-07-17 15:51 ` Yury Norov 2017-07-17 15:51 ` Yury Norov 2017-06-19 15:49 ` [PATCH 09/20] arm64: introduce is_a32_task and is_a32_thread (for AArch32 compat) Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 10/20] arm64: ilp32: add is_ilp32_compat_{task,thread} and TIF_32BIT_AARCH64 Yury Norov 2017-06-19 15:49 ` [PATCH 10/20] arm64: ilp32: add is_ilp32_compat_{task, thread} " Yury Norov 2017-06-19 15:49 ` Yury Norov [this message] 2017-06-19 15:49 ` [PATCH 11/20] arm64: introduce binfmt_elf32.c Yury Norov 2017-06-19 15:49 ` [PATCH 12/20] arm64: ilp32: introduce binfmt_ilp32.c Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 13/20] arm64: ilp32: share aarch32 syscall handlers Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 14/20] arm64: ilp32: add sys_ilp32.c and a separate table (in entry.S) to use it Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 15/20] arm64: signal: share lp64 signal routines to ilp32 Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:49 ` [PATCH 16/20] arm64: signal32: move ilp32 and aarch32 common code to separated file Yury Norov 2017-06-19 15:49 ` Yury Norov 2017-06-19 15:50 ` [PATCH 17/20] arm64: ilp32: introduce ilp32-specific handlers for sigframe and ucontext Yury Norov 2017-06-19 15:50 ` Yury Norov 2017-06-19 15:50 ` [PATCH 18/20] arm64: ptrace: handle ptrace_request differently for aarch32 and ilp32 Yury Norov 2017-06-19 15:50 ` Yury Norov 2017-06-19 15:50 ` [PATCH 19/20] arm64:ilp32: add vdso-ilp32 and use for signal return Yury Norov 2017-06-19 15:50 ` Yury Norov 2017-06-19 15:50 ` [PATCH 20/20] arm64:ilp32: add ARM64_ILP32 to Kconfig Yury Norov 2017-06-19 15:50 ` Yury Norov 2017-06-29 16:10 ` [PATCH v8 00/20] ILP32 for ARM64 Catalin Marinas 2017-06-29 16:10 ` Catalin Marinas 2017-07-06 21:59 ` Yury Norov 2017-07-06 21:59 ` Yury Norov 2017-07-07 17:11 ` Catalin Marinas 2017-07-07 17:11 ` Catalin Marinas 2017-07-24 11:26 ` Yury Norov 2017-07-24 11:26 ` Yury Norov 2017-07-27 17:12 ` Catalin Marinas 2017-07-27 17:12 ` Catalin Marinas 2017-07-31 12:37 ` Yury Norov 2017-07-31 12:37 ` Yury Norov 2017-08-08 13:34 ` Catalin Marinas 2017-08-08 13:34 ` Catalin Marinas 2017-08-21 10:21 ` Yury Norov 2017-08-21 10:21 ` Yury Norov 2017-09-04 11:54 ` Yury Norov 2017-09-04 11:54 ` Yury Norov 2017-09-18 10:06 ` Catalin Marinas 2017-09-18 10:06 ` Catalin Marinas 2017-09-15 11:29 ` Yury Norov 2017-09-15 11:29 ` Yury Norov 2017-11-16 11:11 ` Yury Norov 2017-11-16 11:11 ` Yury Norov 2017-12-11 10:32 ` Catalin Marinas 2017-12-11 10:32 ` Catalin Marinas 2017-12-11 13:13 ` Yury Norov 2017-12-11 13:13 ` Yury Norov 2018-02-02 8:16 ` Yury Norov 2018-02-02 8:16 ` Yury Norov 2018-02-02 8:58 ` Bamvor Zhang 2018-02-02 8:58 ` Bamvor Zhang -- strict thread matches above, loose matches on Subject: below -- 2017-06-04 11:59 Yury Norov 2017-06-04 12:00 ` [PATCH 11/20] arm64: introduce binfmt_elf32.c Yury Norov 2017-06-04 12:00 ` Yury Norov 2017-03-01 19:19 [PATCH v7 resend 00/20] ILP32 for ARM64 Yury Norov 2017-03-01 19:19 ` [PATCH 11/20] arm64: introduce binfmt_elf32.c Yury Norov 2017-03-01 19:19 ` Yury Norov 2017-01-09 11:29 [PATCH v7 00/20] ILP32 for ARM64 Yury Norov 2017-01-09 11:29 ` [PATCH 11/20] arm64: introduce binfmt_elf32.c Yury Norov 2017-01-09 11:29 ` Yury Norov
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