Quelle elf-fdpic.h Sprache: C

/* SPDX-License-Identifier: GPL-2.0-or-later */
/* FDPIC ELF load map
*
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/

#ifndef _LINUX_ELF_FDPIC_H
#define _LINUX_ELF_FDPIC_H

#include <uapi/linux/elf-fdpic.h>

#if ELF_CLASS == ELFCLASS32
#define Elf_Sword   Elf32_Sword
#define elf_fdpic_loadseg  elf32_fdpic_loadseg
#define elf_fdpic_loadmap  elf32_fdpic_loadmap
#define ELF_FDPIC_LOADMAP_VERSION ELF32_FDPIC_LOADMAP_VERSION
#else
#define Elf_Sword   Elf64_Sxword
#define elf_fdpic_loadmap  elf64_fdpic_loadmap
#define elf_fdpic_loadseg  elf64_fdpic_loadseg
#define ELF_FDPIC_LOADMAP_VERSION ELF64_FDPIC_LOADMAP_VERSION
#endif

/*
* binfmt binary parameters structure
*/
struct elf_fdpic_params {
struct elfhdr   hdr;  /* ref copy of ELF header */
struct elf_phdr   *phdrs;  /* ref copy of PT_PHDR table */
struct elf_fdpic_loadmap *loadmap; /* loadmap to be passed to userspace */
unsigned long   elfhdr_addr; /* mapped ELF header user address */
unsigned long   ph_addr; /* mapped PT_PHDR user address */
unsigned long   map_addr; /* mapped loadmap user address */
unsigned long   entry_addr; /* mapped entry user address */
unsigned long   stack_size; /* stack size requested (PT_GNU_STACK) */
unsigned long   dynamic_addr; /* mapped PT_DYNAMIC user address */
unsigned long   load_addr; /* user address at which to map binary */
unsigned long   flags;
#define ELF_FDPIC_FLAG_ARRANGEMENT 0x0000000f /* PT_LOAD arrangement flags */
#define ELF_FDPIC_FLAG_INDEPENDENT 0x00000000 /* PT_LOADs can be put anywhere */
#define ELF_FDPIC_FLAG_HONOURVADDR 0x00000001 /* PT_LOAD.vaddr must be honoured */
#define ELF_FDPIC_FLAG_CONSTDISP 0x00000002 /* PT_LOADs require constant
* displacement */
#define ELF_FDPIC_FLAG_CONTIGUOUS 0x00000003 /* PT_LOADs should be contiguous */
#define ELF_FDPIC_FLAG_EXEC_STACK 0x00000010 /* T if stack to be executable */
#define ELF_FDPIC_FLAG_NOEXEC_STACK 0x00000020 /* T if stack not to be executable */
#define ELF_FDPIC_FLAG_EXECUTABLE 0x00000040 /* T if this object is the executable */
#define ELF_FDPIC_FLAG_PRESENT  0x80000000 /* T if this object is present */
};

#ifdef CONFIG_MMU
extern void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params,
          struct elf_fdpic_params *interp_params,
          unsigned long *start_stack,
          unsigned long *start_brk);
#endif

#endif /* _LINUX_ELF_FDPIC_H */

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