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 /* 14 * binfmt binary parameters structure 15 */ 16 struct elf_fdpic_params { 17 struct elfhdr hdr; /* ref copy of ELF header */ 18 struct elf_phdr *phdrs; /* ref copy of PT_PHDR table */ 19 struct elf32_fdpic_loadmap *loadmap; /* loadmap to be passed to userspace */ 20 unsigned long elfhdr_addr; /* mapped ELF header user address */ 21 unsigned long ph_addr; /* mapped PT_PHDR user address */ 22 unsigned long map_addr; /* mapped loadmap user address */ 23 unsigned long entry_addr; /* mapped entry user address */ 24 unsigned long stack_size; /* stack size requested (PT_GNU_STACK) */ 25 unsigned long dynamic_addr; /* mapped PT_DYNAMIC user address */ 26 unsigned long load_addr; /* user address at which to map binary */ 27 unsigned long flags; 28 #define ELF_FDPIC_FLAG_ARRANGEMENT 0x0000000f /* PT_LOAD arrangement flags */ 29 #define ELF_FDPIC_FLAG_INDEPENDENT 0x00000000 /* PT_LOADs can be put anywhere */ 30 #define ELF_FDPIC_FLAG_HONOURVADDR 0x00000001 /* PT_LOAD.vaddr must be honoured */ 31 #define ELF_FDPIC_FLAG_CONSTDISP 0x00000002 /* PT_LOADs require constant 32 * displacement */ 33 #define ELF_FDPIC_FLAG_CONTIGUOUS 0x00000003 /* PT_LOADs should be contiguous */ 34 #define ELF_FDPIC_FLAG_EXEC_STACK 0x00000010 /* T if stack to be executable */ 35 #define ELF_FDPIC_FLAG_NOEXEC_STACK 0x00000020 /* T if stack not to be executable */ 36 #define ELF_FDPIC_FLAG_EXECUTABLE 0x00000040 /* T if this object is the executable */ 37 #define ELF_FDPIC_FLAG_PRESENT 0x80000000 /* T if this object is present */ 38 }; 39 40 #ifdef CONFIG_MMU 41 extern void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params, 42 struct elf_fdpic_params *interp_params, 43 unsigned long *start_stack, 44 unsigned long *start_brk); 45 #endif 46 47 #endif /* _LINUX_ELF_FDPIC_H */ 48