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b922bf04d2
The binfmt_flat_fdpic code has a number of 32-bit specific data structures associated with it. Extend it to be able to support and be used on 64-bit systems as well. The new code defines a number of key 64-bit variants of the core elf-fdpic data structures - along side the existing 32-bit sized ones. A common set of generic named structures are defined to be either the 32-bit or 64-bit ones as required at compile time. This is a similar technique to that used in the ELF binfmt loader. For example: elf_fdpic_loadseg is either elf32_fdpic_loadseg or elf64_fdpic_loadseg elf_fdpic_loadmap is either elf32_fdpic_loadmap or elf64_fdpic_loadmap the choice based on ELFCLASS32 or ELFCLASS64. Signed-off-by: Greg Ungerer <gerg@kernel.org> Acked-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230711130754.481209-2-gerg@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/* elf-fdpic.h: FDPIC ELF load map
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*
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* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _UAPI_LINUX_ELF_FDPIC_H
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#define _UAPI_LINUX_ELF_FDPIC_H
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#include <linux/elf.h>
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#define PT_GNU_STACK (PT_LOOS + 0x474e551)
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/* segment mappings for ELF FDPIC libraries/executables/interpreters */
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struct elf32_fdpic_loadseg {
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Elf32_Addr addr; /* core address to which mapped */
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Elf32_Addr p_vaddr; /* VMA recorded in file */
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Elf32_Word p_memsz; /* allocation size recorded in file */
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};
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struct elf32_fdpic_loadmap {
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Elf32_Half version; /* version of these structures, just in case... */
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Elf32_Half nsegs; /* number of segments */
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struct elf32_fdpic_loadseg segs[];
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};
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#define ELF32_FDPIC_LOADMAP_VERSION 0x0000
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/* segment mappings for ELF FDPIC libraries/executables/interpreters */
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struct elf64_fdpic_loadseg {
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Elf64_Addr addr; /* core address to which mapped */
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Elf64_Addr p_vaddr; /* VMA recorded in file */
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Elf64_Word p_memsz; /* allocation size recorded in file */
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};
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struct elf64_fdpic_loadmap {
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Elf64_Half version; /* version of these structures, just in case... */
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Elf64_Half nsegs; /* number of segments */
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struct elf64_fdpic_loadseg segs[];
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};
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#define ELF64_FDPIC_LOADMAP_VERSION 0x0000
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#endif /* _UAPI_LINUX_ELF_FDPIC_H */
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