1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* FDPIC ELF load map 3 * 4 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. 5 * Written by David Howells (dhowells@redhat.com) 6 */ 7 8#ifndef _LINUX_ELF_FDPIC_H 9#define _LINUX_ELF_FDPIC_H 10 11#include <uapi/linux/elf-fdpic.h> 12 13#if ELF_CLASS == ELFCLASS32 14#define Elf_Sword Elf32_Sword 15#define elf_fdpic_loadseg elf32_fdpic_loadseg 16#define elf_fdpic_loadmap elf32_fdpic_loadmap 17#define ELF_FDPIC_LOADMAP_VERSION ELF32_FDPIC_LOADMAP_VERSION 18#else 19#define Elf_Sword Elf64_Sxword 20#define elf_fdpic_loadmap elf64_fdpic_loadmap 21#define elf_fdpic_loadseg elf64_fdpic_loadseg 22#define ELF_FDPIC_LOADMAP_VERSION ELF64_FDPIC_LOADMAP_VERSION 23#endif 24 25/* 26 * binfmt binary parameters structure 27 */ 28struct elf_fdpic_params { 29 struct elfhdr hdr; /* ref copy of ELF header */ 30 struct elf_phdr *phdrs; /* ref copy of PT_PHDR table */ 31 struct elf_fdpic_loadmap *loadmap; /* loadmap to be passed to userspace */ 32 unsigned long elfhdr_addr; /* mapped ELF header user address */ 33 unsigned long ph_addr; /* mapped PT_PHDR user address */ 34 unsigned long map_addr; /* mapped loadmap user address */ 35 unsigned long entry_addr; /* mapped entry user address */ 36 unsigned long stack_size; /* stack size requested (PT_GNU_STACK) */ 37 unsigned long dynamic_addr; /* mapped PT_DYNAMIC user address */ 38 unsigned long load_addr; /* user address at which to map binary */ 39 unsigned long flags; 40#define ELF_FDPIC_FLAG_ARRANGEMENT 0x0000000f /* PT_LOAD arrangement flags */ 41#define ELF_FDPIC_FLAG_INDEPENDENT 0x00000000 /* PT_LOADs can be put anywhere */ 42#define ELF_FDPIC_FLAG_HONOURVADDR 0x00000001 /* PT_LOAD.vaddr must be honoured */ 43#define ELF_FDPIC_FLAG_CONSTDISP 0x00000002 /* PT_LOADs require constant 44 * displacement */ 45#define ELF_FDPIC_FLAG_CONTIGUOUS 0x00000003 /* PT_LOADs should be contiguous */ 46#define ELF_FDPIC_FLAG_EXEC_STACK 0x00000010 /* T if stack to be executable */ 47#define ELF_FDPIC_FLAG_NOEXEC_STACK 0x00000020 /* T if stack not to be executable */ 48#define ELF_FDPIC_FLAG_EXECUTABLE 0x00000040 /* T if this object is the executable */ 49#define ELF_FDPIC_FLAG_PRESENT 0x80000000 /* T if this object is present */ 50}; 51 52#ifdef CONFIG_MMU 53extern void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params, 54 struct elf_fdpic_params *interp_params, 55 unsigned long *start_stack, 56 unsigned long *start_brk); 57#endif 58 59#endif /* _LINUX_ELF_FDPIC_H */ 60