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/* 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 */