include/linux/elf-fdpic.h

   1 /* 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 <uapi/linux/elf-fdpic.h>
  16
  17 /*
  18  * binfmt binary parameters structure
  19  */
  20 struct elf_fdpic_params {
  21         struct elfhdr                   hdr;            /* ref copy of ELF header */
  22         struct elf_phdr                 *phdrs;         /* ref copy of PT_PHDR table */
  23         struct elf32_fdpic_loadmap      *loadmap;       /* loadmap to be passed to userspace */
  24         unsigned long                   elfhdr_addr;    /* mapped ELF header user address */
  25         unsigned long                   ph_addr;        /* mapped PT_PHDR user address */
  26         unsigned long                   map_addr;       /* mapped loadmap user address */
  27         unsigned long                   entry_addr;     /* mapped entry user address */
  28         unsigned long                   stack_size;     /* stack size requested (PT_GNU_STACK) */
  29         unsigned long                   dynamic_addr;   /* mapped PT_DYNAMIC user address */
  30         unsigned long                   load_addr;      /* user address at which to map binary */
  31         unsigned long                   flags;
  32 #define ELF_FDPIC_FLAG_ARRANGEMENT      0x0000000f      /* PT_LOAD arrangement flags */
  33 #define ELF_FDPIC_FLAG_INDEPENDENT      0x00000000      /* PT_LOADs can be put anywhere */
  34 #define ELF_FDPIC_FLAG_HONOURVADDR      0x00000001      /* PT_LOAD.vaddr must be honoured */
  35 #define ELF_FDPIC_FLAG_CONSTDISP        0x00000002      /* PT_LOADs require constant
  36                                                          * displacement */
  37 #define ELF_FDPIC_FLAG_CONTIGUOUS       0x00000003      /* PT_LOADs should be contiguous */
  38 #define ELF_FDPIC_FLAG_EXEC_STACK       0x00000010      /* T if stack to be executable */
  39 #define ELF_FDPIC_FLAG_NOEXEC_STACK     0x00000020      /* T if stack not to be executable */
  40 #define ELF_FDPIC_FLAG_EXECUTABLE       0x00000040      /* T if this object is the executable */
  41 #define ELF_FDPIC_FLAG_PRESENT          0x80000000      /* T if this object is present */
  42 };
  43
  44 #ifdef CONFIG_MMU
  45 extern void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params,
  46                                       struct elf_fdpic_params *interp_params,
  47                                       unsigned long *start_stack,
  48                                       unsigned long *start_brk);
  49 #endif
  50
  51 #endif /* _LINUX_ELF_FDPIC_H */