90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Support for ILP32 Linux/aarch64 ELF binaries.
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*/
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#undef CONFIG_AARCH32_EL0
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#define compat_elf_gregset_t elf_gregset_t
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#include <linux/elfcore-compat.h>
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#include <linux/time.h>
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#include <asm/cpufeature.h>
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#undef ELF_CLASS
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#define ELF_CLASS ELFCLASS32
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#undef elfhdr
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#undef elf_phdr
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#undef elf_shdr
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#undef elf_note
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#undef elf_addr_t
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#define elfhdr elf32_hdr
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#define elf_phdr elf32_phdr
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#define elf_shdr elf32_shdr
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#define elf_note elf32_note
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#define elf_addr_t Elf32_Addr
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/*
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* Some data types as stored in coredump.
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*/
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#define user_long_t compat_long_t
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#define user_siginfo_t compat_siginfo_t
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#define copy_siginfo_to_external copy_siginfo_to_external32
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/*
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* The machine-dependent core note format types are defined in elfcore-compat.h,
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* which requires asm/elf.h to define compat_elf_gregset_t et al.
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*/
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#define elf_prstatus compat_elf_prstatus
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#define elf_prpsinfo compat_elf_prpsinfo
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#define elf_prstatus_common compat_elf_prstatus_common
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/* AARCH64 ILP32 EABI. */
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#undef elf_check_arch
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#define elf_check_arch(x) (((x)->e_machine == EM_AARCH64) \
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&& (x)->e_ident[EI_CLASS] == ELFCLASS32)
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#undef SET_PERSONALITY
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#define SET_PERSONALITY(ex) \
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do { \
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set_bit(TIF_32BIT, ¤t->mm->context.flags); \
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set_thread_flag(TIF_32BIT_AARCH64); \
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clear_thread_flag(TIF_32BIT); \
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} while (0)
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#undef ARCH_DLINFO
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#define ARCH_DLINFO \
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do { \
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NEW_AUX_ENT(AT_SYSINFO_EHDR, \
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(elf_addr_t)(long)current->mm->context.vdso); \
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} while (0)
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#undef ELF_PLATFORM
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#ifdef __AARCH64EB__
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#define ELF_PLATFORM ("aarch64_be:ilp32")
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#else
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#define ELF_PLATFORM ("aarch64:ilp32")
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#endif
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#undef ELF_ET_DYN_BASE
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#define ELF_ET_DYN_BASE COMPAT_ELF_ET_DYN_BASE
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#undef ELF_HWCAP
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#undef ELF_HWCAP2
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#define ELF_HWCAP cpu_get_elf_hwcap()
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#define ELF_HWCAP2 cpu_get_elf_hwcap2()
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/*
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* Rename a few of the symbols that binfmt_elf.c will define.
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* These are all local so the names don't really matter, but it
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* might make some debugging less confusing not to duplicate them.
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*/
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#define elf_format compat_elf_format
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#define init_elf_binfmt init_compat_elf_binfmt
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#define exit_elf_binfmt exit_compat_elf_binfmt
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#undef ns_to_kernel_old_timeval
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#define ns_to_kernel_old_timeval ns_to_old_timeval32
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#include "../../../fs/binfmt_elf.c"
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