| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |