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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
0c552e5f DH |
2 | /* FDPIC ELF load map |
3 | * | |
4 | * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. | |
5 | * Written by David Howells (dhowells@redhat.com) | |
0c552e5f DH |
6 | */ |
7 | ||
8 | #ifndef _LINUX_ELF_FDPIC_H | |
9 | #define _LINUX_ELF_FDPIC_H | |
10 | ||
11 | #include <uapi/linux/elf-fdpic.h> | |
12 | ||
b922bf04 GU |
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 | ||
0c552e5f DH |
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 */ | |
b922bf04 | 31 | struct elf_fdpic_loadmap *loadmap; /* loadmap to be passed to userspace */ |
0c552e5f DH |
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 */ |