projects/linux·blob v2.6.13 · refs

68 lines · 2.7 KiB

1/* elf-fdpic.h: FDPIC ELF load map
2 *
3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells ([email protected])
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12#ifndef _LINUX_ELF_FDPIC_H
13#define _LINUX_ELF_FDPIC_H
14
15#include <linux/elf.h>
16
17#define PT_GNU_STACK (PT_LOOS + 0x474e551)
18
19/* segment mappings for ELF FDPIC libraries/executables/interpreters */
20struct elf32_fdpic_loadseg {
21 Elf32_Addr addr; /* core address to which mapped */
22 Elf32_Addr p_vaddr; /* VMA recorded in file */
23 Elf32_Word p_memsz; /* allocation size recorded in file */
24};
25
26struct elf32_fdpic_loadmap {
27 Elf32_Half version; /* version of these structures, just in case... */
28 Elf32_Half nsegs; /* number of segments */
29 struct elf32_fdpic_loadseg segs[];
30};
31
32#define ELF32_FDPIC_LOADMAP_VERSION 0x0000
33
34/*
35 * binfmt binary parameters structure
36 */
37struct elf_fdpic_params {
38 struct elfhdr hdr; /* ref copy of ELF header */
39 struct elf_phdr *phdrs; /* ref copy of PT_PHDR table */
40 struct elf32_fdpic_loadmap *loadmap; /* loadmap to be passed to userspace */
41 unsigned long elfhdr_addr; /* mapped ELF header user address */
42 unsigned long ph_addr; /* mapped PT_PHDR user address */
43 unsigned long map_addr; /* mapped loadmap user address */
44 unsigned long entry_addr; /* mapped entry user address */
45 unsigned long stack_size; /* stack size requested (PT_GNU_STACK) */
46 unsigned long dynamic_addr; /* mapped PT_DYNAMIC user address */
47 unsigned long load_addr; /* user address at which to map binary */
48 unsigned long flags;
49#define ELF_FDPIC_FLAG_ARRANGEMENT 0x0000000f /* PT_LOAD arrangement flags */
50#define ELF_FDPIC_FLAG_INDEPENDENT 0x00000000 /* PT_LOADs can be put anywhere */
51#define ELF_FDPIC_FLAG_HONOURVADDR 0x00000001 /* PT_LOAD.vaddr must be honoured */
52#define ELF_FDPIC_FLAG_CONSTDISP 0x00000002 /* PT_LOADs require constant
53 * displacement */
54#define ELF_FDPIC_FLAG_CONTIGUOUS 0x00000003 /* PT_LOADs should be contiguous */
55#define ELF_FDPIC_FLAG_EXEC_STACK 0x00000010 /* T if stack to be executable */
56#define ELF_FDPIC_FLAG_NOEXEC_STACK 0x00000020 /* T if stack not to be executable */
57#define ELF_FDPIC_FLAG_EXECUTABLE 0x00000040 /* T if this object is the executable */
58#define ELF_FDPIC_FLAG_PRESENT 0x80000000 /* T if this object is present */
59};
60
61#ifdef CONFIG_MMU
62extern void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params,
63 struct elf_fdpic_params *interp_params,
64 unsigned long *start_stack,
65 unsigned long *start_brk);
66#endif
67
68#endif /* _LINUX_ELF_FDPIC_H */