1 /* elf-fdpic.h: FDPIC ELF load map
3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
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.
12 #ifndef _LINUX_ELF_FDPIC_H
13 #define _LINUX_ELF_FDPIC_H
15 #include <linux/elf.h>
17 #define PT_GNU_STACK (PT_LOOS + 0x474e551)
19 /* segment mappings for ELF FDPIC libraries/executables/interpreters */
20 struct 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 */
26 struct 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
[];
32 #define ELF32_FDPIC_LOADMAP_VERSION 0x0000
35 * binfmt binary parameters structure
37 struct 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 */
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
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 */
63 extern void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params
*exec_params
,
64 struct elf_fdpic_params
*interp_params
,
65 unsigned long *start_stack
,
66 unsigned long *start_brk
);
68 #endif /* __KERNEL__ */
70 #endif /* _LINUX_ELF_FDPIC_H */
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