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1da177e4 LT |
1 | /* elf-fdpic.h: FDPIC ELF load map |
2 | * | |
3 | * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
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 */ | |
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 */ | |
24 | }; | |
25 | ||
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[]; | |
30 | }; | |
31 | ||
32 | #define ELF32_FDPIC_LOADMAP_VERSION 0x0000 | |
33 | ||
34 | /* | |
35 | * binfmt binary parameters structure | |
36 | */ | |
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 */ | |
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 | |
62 | extern 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 */ |