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 */ 28 struct 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 53 extern 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