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01: /* elf-fdpic.h: FDPIC ELF load map
02:  *
03:  * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
04:  * Written by David Howells (dhowells@redhat.com)
05:  *
06:  * This program is free software; you can redistribute it and/or
07:  * modify it under the terms of the GNU General Public License
08:  * as published by the Free Software Foundation; either version
09:  * 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: 
62: #endif /* _LINUX_ELF_FDPIC_H */
63: 

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