| [2] | 1 | /* elf-fdpic.h: FDPIC ELF load map |
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| 2 | * |
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| 3 | * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved. |
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| 4 | * Written by David Howells (dhowells@redhat.com) |
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| 5 | * |
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| 6 | * This program is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU General Public License |
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| 8 | * as published by the Free Software Foundation; either version |
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| 9 | * 2 of the License, or (at your option) any later version. |
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| 10 | */ |
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| 11 | |
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| 12 | #ifndef _LINUX_ELF_FDPIC_H |
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| 13 | #define _LINUX_ELF_FDPIC_H |
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| 14 | |
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| 15 | #include <linux/elf.h> |
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| 16 | |
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| 17 | #define PT_GNU_STACK (PT_LOOS + 0x474e551) |
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| 18 | |
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| 19 | /* segment mappings for ELF FDPIC libraries/executables/interpreters */ |
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| 20 | struct elf32_fdpic_loadseg { |
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| 21 | Elf32_Addr addr; /* core address to which mapped */ |
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| 22 | Elf32_Addr p_vaddr; /* VMA recorded in file */ |
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| 23 | Elf32_Word p_memsz; /* allocation size recorded in file */ |
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| 24 | }; |
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| 25 | |
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| 26 | struct elf32_fdpic_loadmap { |
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| 27 | Elf32_Half version; /* version of these structures, just in case... */ |
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| 28 | Elf32_Half nsegs; /* number of segments */ |
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| 29 | struct elf32_fdpic_loadseg segs[]; |
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| 30 | }; |
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| 31 | |
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| 32 | #define ELF32_FDPIC_LOADMAP_VERSION 0x0000 |
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| 33 | |
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| 34 | /* |
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| 35 | * binfmt binary parameters structure |
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| 36 | */ |
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| 37 | struct elf_fdpic_params { |
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| 38 | struct elfhdr hdr; /* ref copy of ELF header */ |
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| 39 | struct elf_phdr *phdrs; /* ref copy of PT_PHDR table */ |
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| 40 | struct elf32_fdpic_loadmap *loadmap; /* loadmap to be passed to userspace */ |
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| 41 | unsigned long elfhdr_addr; /* mapped ELF header user address */ |
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| 42 | unsigned long ph_addr; /* mapped PT_PHDR user address */ |
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| 43 | unsigned long map_addr; /* mapped loadmap user address */ |
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| 44 | unsigned long entry_addr; /* mapped entry user address */ |
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| 45 | unsigned long stack_size; /* stack size requested (PT_GNU_STACK) */ |
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| 46 | unsigned long dynamic_addr; /* mapped PT_DYNAMIC user address */ |
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| 47 | unsigned long load_addr; /* user address at which to map binary */ |
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| 48 | unsigned long flags; |
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| 49 | #define ELF_FDPIC_FLAG_ARRANGEMENT 0x0000000f /* PT_LOAD arrangement flags */ |
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| 50 | #define ELF_FDPIC_FLAG_INDEPENDENT 0x00000000 /* PT_LOADs can be put anywhere */ |
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| 51 | #define ELF_FDPIC_FLAG_HONOURVADDR 0x00000001 /* PT_LOAD.vaddr must be honoured */ |
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| 52 | #define ELF_FDPIC_FLAG_CONSTDISP 0x00000002 /* PT_LOADs require constant |
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| 53 | * displacement */ |
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| 54 | #define ELF_FDPIC_FLAG_CONTIGUOUS 0x00000003 /* PT_LOADs should be contiguous */ |
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| 55 | #define ELF_FDPIC_FLAG_EXEC_STACK 0x00000010 /* T if stack to be executable */ |
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| 56 | #define ELF_FDPIC_FLAG_NOEXEC_STACK 0x00000020 /* T if stack not to be executable */ |
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| 57 | #define ELF_FDPIC_FLAG_EXECUTABLE 0x00000040 /* T if this object is the executable */ |
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| 58 | #define ELF_FDPIC_FLAG_PRESENT 0x80000000 /* T if this object is present */ |
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| 59 | }; |
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| 60 | |
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| 61 | #ifdef CONFIG_MMU |
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| 62 | extern void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params, |
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| 63 | struct elf_fdpic_params *interp_params, |
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| 64 | unsigned long *start_stack, |
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| 65 | unsigned long *start_brk); |
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| 66 | #endif |
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| 67 | |
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| 68 | #endif /* _LINUX_ELF_FDPIC_H */ |
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