lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sun, 4 Jun 2017 15:00:01 +0300 From: Yury Norov <ynorov@...iumnetworks.com> To: Catalin Marinas <catalin.marinas@....com>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, Arnd Bergmann <arnd@...db.de> Cc: Yury Norov <ynorov@...iumnetworks.com>, Andrew Pinski <pinskia@...il.com>, Andrew Pinski <Andrew.Pinski@...iumnetworks.com>, Adam Borowski <kilobyte@...band.pl>, Chris Metcalf <cmetcalf@...hip.com>, Steve Ellcey <sellcey@...iumnetworks.com>, Maxim Kuvyrkov <maxim.kuvyrkov@...aro.org>, Ramana Radhakrishnan <ramana.gcc@...glemail.com>, Florian Weimer <fweimer@...hat.com>, Bamvor Zhangjian <bamvor.zhangjian@...wei.com>, Andreas Schwab <schwab@...e.de>, Chris Metcalf <cmetcalf@...lanox.com>, Heiko Carstens <heiko.carstens@...ibm.com>, schwidefsky@...ibm.com, broonie@...nel.org, Joseph Myers <joseph@...esourcery.com>, christoph.muellner@...obroma-systems.com, szabolcs.nagy@....com, klimov.linux@...il.com, Nathan_Lynch@...tor.com, agraf@...e.de, Prasun.Kapoor@...iumnetworks.com, geert@...ux-m68k.org, philipp.tomsich@...obroma-systems.com, manuel.montezelo@...il.com, linyongting@...wei.com, davem@...emloft.net, zhouchengming1@...wei.com, Bamvor Jian Zhang <bamvor.zhangjian@...aro.org> Subject: [PATCH 12/20] arm64: ilp32: introduce binfmt_ilp32.c Like binfmt_elf32.c, binfmt_ilp32.c is needed to handle ILP32 binaries Signed-off-by: Yury Norov <ynorov@...iumnetworks.com> Signed-off-by: Bamvor Jian Zhang <bamvor.zhangjian@...aro.org> --- arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/binfmt_ilp32.c | 85 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 86 insertions(+) create mode 100644 arch/arm64/kernel/binfmt_ilp32.c diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 6f872741fd3d..5ba41095c466 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -29,6 +29,7 @@ $(obj)/%.stub.o: $(obj)/%.o FORCE arm64-obj-$(CONFIG_AARCH32_EL0) += sys32.o kuser32.o signal32.o \ sys_compat.o entry32.o binfmt_elf32.o +arm64-obj-$(CONFIG_ARM64_ILP32) += binfmt_ilp32.o arm64-obj-$(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_ilp32.c b/arch/arm64/kernel/binfmt_ilp32.c new file mode 100644 index 000000000000..bb31325e6f80 --- /dev/null +++ b/arch/arm64/kernel/binfmt_ilp32.c @@ -0,0 +1,85 @@ +/* + * Support for ILP32 Linux/aarch64 ELF binaries. + */ +#undef CONFIG_AARCH32_EL0 +#define compat_elf_gregset_t elf_gregset_t + +#include <linux/elfcore-compat.h> +#include <linux/time.h> + +#undef ELF_CLASS +#define ELF_CLASS ELFCLASS32 + +#undef elfhdr +#undef elf_phdr +#undef elf_shdr +#undef elf_note +#undef elf_addr_t +#define elfhdr elf32_hdr +#define elf_phdr elf32_phdr +#define elf_shdr elf32_shdr +#define elf_note elf32_note +#define elf_addr_t Elf32_Addr + +/* + * Some data types as stored in coredump. + */ +#define user_long_t compat_long_t +#define user_siginfo_t compat_siginfo_t +#define copy_siginfo_to_user copy_siginfo_to_user32 + +/* + * The machine-dependent core note format types are defined in elfcore-compat.h, + * which requires asm/elf.h to define compat_elf_gregset_t et al. + */ +#define elf_prstatus compat_elf_prstatus +#define elf_prpsinfo compat_elf_prpsinfo + +/* AARCH64 ILP32 EABI. */ +#undef elf_check_arch +#define elf_check_arch(x) (((x)->e_machine == EM_AARCH64) \ + && (x)->e_ident[EI_CLASS] == ELFCLASS32) + +#undef SET_PERSONALITY +#define SET_PERSONALITY(ex) \ +do { \ + set_bit(TIF_32BIT, ¤t->mm->context.flags); \ + set_thread_flag(TIF_32BIT_AARCH64); \ + clear_thread_flag(TIF_32BIT); \ +} while (0) + +#undef ARCH_DLINFO +#define ARCH_DLINFO \ +do { \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, \ + (elf_addr_t)(long)current->mm->context.vdso); \ +} while (0) + +#undef ELF_PLATFORM +#ifdef __AARCH64EB__ +#define ELF_PLATFORM ("aarch64_be:ilp32") +#else +#define ELF_PLATFORM ("aarch64:ilp32") +#endif + +#undef ELF_ET_DYN_BASE +#define ELF_ET_DYN_BASE COMPAT_ELF_ET_DYN_BASE + +#undef ELF_HWCAP +#undef ELF_HWCAP2 +#define ELF_HWCAP ((u32) elf_hwcap) +#define ELF_HWCAP2 ((u32) (elf_hwcap >> 32)) + +/* + * Rename a few of the symbols that binfmt_elf.c will define. + * These are all local so the names don't really matter, but it + * might make some debugging less confusing not to duplicate them. + */ +#define elf_format compat_elf_format +#define init_elf_binfmt init_compat_elf_binfmt +#define exit_elf_binfmt exit_compat_elf_binfmt + +#undef ns_to_timeval +#define ns_to_timeval ns_to_compat_timeval + +#include "../../../fs/binfmt_elf.c" -- 2.11.0
Powered by blists - more mailing lists