// SPDX-License-Identifier: GPL-2.0-only /* * 32-bit compatibility support for ELF format executables and core dumps. * * Copyright (C) 2007 Red Hat, Inc. All rights reserved. * * Red Hat Author: Roland McGrath. * * This file is used in a 64-bit kernel that wants to support 32-bit ELF. * asm/elf.h is responsible for defining the compat_* and COMPAT_* macros * used below, with definitions appropriate for 32-bit ABI compatibility. * * We use macros to rename the ABI types and machine-dependent * functions used in binfmt_elf.c to compat versions. */ #include <linux/elfcore-compat.h> #include <linux/time.h> #define ELF_COMPAT … /* * Rename the basic ELF layout types to refer to the 32-bit class of files. */ #undef ELF_CLASS #define ELF_CLASS … #undef elfhdr #undef elf_phdr #undef elf_shdr #undef elf_note #undef elf_addr_t #undef ELF_GNU_PROPERTY_ALIGN #define elfhdr … #define elf_phdr … #define elf_shdr … #define elf_note … #define elf_addr_t … #define ELF_GNU_PROPERTY_ALIGN … /* * Some data types as stored in coredump. */ #define user_long_t … #define user_siginfo_t … #define copy_siginfo_to_external … /* * 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 … #define elf_prstatus_common … #define elf_prpsinfo … #undef ns_to_kernel_old_timeval #define ns_to_kernel_old_timeval … /* * To use this file, asm/elf.h must define compat_elf_check_arch. * The other following macros can be defined if the compat versions * differ from the native ones, or omitted when they match. */ #undef elf_check_arch #define elf_check_arch … #ifdef COMPAT_ELF_PLATFORM #undef ELF_PLATFORM #define ELF_PLATFORM … #endif #ifdef COMPAT_ELF_HWCAP #undef ELF_HWCAP #define ELF_HWCAP … #endif #ifdef COMPAT_ELF_HWCAP2 #undef ELF_HWCAP2 #define ELF_HWCAP2 … #endif #ifdef COMPAT_ARCH_DLINFO #undef ARCH_DLINFO #define ARCH_DLINFO … #endif #ifdef COMPAT_ELF_ET_DYN_BASE #undef ELF_ET_DYN_BASE #define ELF_ET_DYN_BASE … #endif #ifdef COMPAT_ELF_PLAT_INIT #undef ELF_PLAT_INIT #define ELF_PLAT_INIT … #endif #ifdef COMPAT_SET_PERSONALITY #undef SET_PERSONALITY #define SET_PERSONALITY … #endif #ifdef compat_start_thread #define COMPAT_START_THREAD … #endif #ifdef COMPAT_START_THREAD #undef START_THREAD #define START_THREAD … #endif #ifdef compat_arch_setup_additional_pages #define COMPAT_ARCH_SETUP_ADDITIONAL_PAGES … #endif #ifdef COMPAT_ARCH_SETUP_ADDITIONAL_PAGES #undef ARCH_HAS_SETUP_ADDITIONAL_PAGES #define ARCH_HAS_SETUP_ADDITIONAL_PAGES … #undef ARCH_SETUP_ADDITIONAL_PAGES #define ARCH_SETUP_ADDITIONAL_PAGES … #endif #ifdef compat_elf_read_implies_exec #undef elf_read_implies_exec #define elf_read_implies_exec … #endif /* * 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 … #define init_elf_binfmt … #define exit_elf_binfmt … #define binfmt_elf_test_cases … #define binfmt_elf_test_suite … /* * We share all the actual code with the native (64-bit) version. */ #include "binfmt_elf.c"
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