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 | #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 | |
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 */ |
31 | struct elf_fdpic_loadmap *loadmap; /* loadmap to be passed to userspace */ |
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 */ |
60 | |