12874c5fdSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 20c552e5fSDavid Howells /* FDPIC ELF load map 30c552e5fSDavid Howells * 40c552e5fSDavid Howells * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. 50c552e5fSDavid Howells * Written by David Howells (dhowells@redhat.com) 60c552e5fSDavid Howells */ 70c552e5fSDavid Howells 80c552e5fSDavid Howells #ifndef _LINUX_ELF_FDPIC_H 90c552e5fSDavid Howells #define _LINUX_ELF_FDPIC_H 100c552e5fSDavid Howells 110c552e5fSDavid Howells #include <uapi/linux/elf-fdpic.h> 120c552e5fSDavid Howells 13*b922bf04SGreg Ungerer #if ELF_CLASS == ELFCLASS32 14*b922bf04SGreg Ungerer #define Elf_Sword Elf32_Sword 15*b922bf04SGreg Ungerer #define elf_fdpic_loadseg elf32_fdpic_loadseg 16*b922bf04SGreg Ungerer #define elf_fdpic_loadmap elf32_fdpic_loadmap 17*b922bf04SGreg Ungerer #define ELF_FDPIC_LOADMAP_VERSION ELF32_FDPIC_LOADMAP_VERSION 18*b922bf04SGreg Ungerer #else 19*b922bf04SGreg Ungerer #define Elf_Sword Elf64_Sxword 20*b922bf04SGreg Ungerer #define elf_fdpic_loadmap elf64_fdpic_loadmap 21*b922bf04SGreg Ungerer #define elf_fdpic_loadseg elf64_fdpic_loadseg 22*b922bf04SGreg Ungerer #define ELF_FDPIC_LOADMAP_VERSION ELF64_FDPIC_LOADMAP_VERSION 23*b922bf04SGreg Ungerer #endif 24*b922bf04SGreg Ungerer 250c552e5fSDavid Howells /* 260c552e5fSDavid Howells * binfmt binary parameters structure 270c552e5fSDavid Howells */ 280c552e5fSDavid Howells struct elf_fdpic_params { 290c552e5fSDavid Howells struct elfhdr hdr; /* ref copy of ELF header */ 300c552e5fSDavid Howells struct elf_phdr *phdrs; /* ref copy of PT_PHDR table */ 31*b922bf04SGreg Ungerer struct elf_fdpic_loadmap *loadmap; /* loadmap to be passed to userspace */ 320c552e5fSDavid Howells unsigned long elfhdr_addr; /* mapped ELF header user address */ 330c552e5fSDavid Howells unsigned long ph_addr; /* mapped PT_PHDR user address */ 340c552e5fSDavid Howells unsigned long map_addr; /* mapped loadmap user address */ 350c552e5fSDavid Howells unsigned long entry_addr; /* mapped entry user address */ 360c552e5fSDavid Howells unsigned long stack_size; /* stack size requested (PT_GNU_STACK) */ 370c552e5fSDavid Howells unsigned long dynamic_addr; /* mapped PT_DYNAMIC user address */ 380c552e5fSDavid Howells unsigned long load_addr; /* user address at which to map binary */ 390c552e5fSDavid Howells unsigned long flags; 400c552e5fSDavid Howells #define ELF_FDPIC_FLAG_ARRANGEMENT 0x0000000f /* PT_LOAD arrangement flags */ 410c552e5fSDavid Howells #define ELF_FDPIC_FLAG_INDEPENDENT 0x00000000 /* PT_LOADs can be put anywhere */ 420c552e5fSDavid Howells #define ELF_FDPIC_FLAG_HONOURVADDR 0x00000001 /* PT_LOAD.vaddr must be honoured */ 430c552e5fSDavid Howells #define ELF_FDPIC_FLAG_CONSTDISP 0x00000002 /* PT_LOADs require constant 440c552e5fSDavid Howells * displacement */ 450c552e5fSDavid Howells #define ELF_FDPIC_FLAG_CONTIGUOUS 0x00000003 /* PT_LOADs should be contiguous */ 460c552e5fSDavid Howells #define ELF_FDPIC_FLAG_EXEC_STACK 0x00000010 /* T if stack to be executable */ 470c552e5fSDavid Howells #define ELF_FDPIC_FLAG_NOEXEC_STACK 0x00000020 /* T if stack not to be executable */ 480c552e5fSDavid Howells #define ELF_FDPIC_FLAG_EXECUTABLE 0x00000040 /* T if this object is the executable */ 490c552e5fSDavid Howells #define ELF_FDPIC_FLAG_PRESENT 0x80000000 /* T if this object is present */ 500c552e5fSDavid Howells }; 510c552e5fSDavid Howells 520c552e5fSDavid Howells #ifdef CONFIG_MMU 530c552e5fSDavid Howells extern void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params, 540c552e5fSDavid Howells struct elf_fdpic_params *interp_params, 550c552e5fSDavid Howells unsigned long *start_stack, 560c552e5fSDavid Howells unsigned long *start_brk); 570c552e5fSDavid Howells #endif 580c552e5fSDavid Howells 590c552e5fSDavid Howells #endif /* _LINUX_ELF_FDPIC_H */ 60