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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 */ |