[PATCH 09/18] arm64: introduce binfmt_elf32.c
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2016-12-05 15:10:28
Also in:
linux-arch, lkml
On Fri, Oct 21, 2016 at 11:33:08PM +0300, Yury Norov wrote:
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.
Can you remind me why we need this patch (rather than using the default fs/compat_binfmt_elf.c which you include here anyway)?
quoted hunk ↗ jump to hunk
--- /dev/null +++ b/arch/arm64/kernel/binfmt_elf32.c@@ -0,0 +1,31 @@ +/* + * Support for AArch32 Linux ELF binaries. + */ + +/* AArch32 EABI. */ +#define EF_ARM_EABI_MASK 0xff000000 + +#define compat_start_thread compat_start_thread +#define COMPAT_SET_PERSONALITY(ex) \ +do { \ + clear_thread_flag(TIF_32BIT_AARCH64); \ + set_thread_flag(TIF_32BIT); \ +} while (0)
You introduce this here but it seems to still be present in asm/elf.h. -- Catalin