root/include/linux/elf-fdpic.h

INCLUDED FROM

/* elf-fdpic.h: FDPIC ELF load map
 *
 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#ifndef _LINUX_ELF_FDPIC_H
#define _LINUX_ELF_FDPIC_H

#include <linux/elf.h>

#define PT_GNU_STACK    (PT_LOOS + 0x474e551)

/* segment mappings for ELF FDPIC libraries/executables/interpreters */
struct elf32_fdpic_loadseg {
        Elf32_Addr      addr;           /* core address to which mapped */
        Elf32_Addr      p_vaddr;        /* VMA recorded in file */
        Elf32_Word      p_memsz;        /* allocation size recorded in file */
};

struct elf32_fdpic_loadmap {
        Elf32_Half      version;        /* version of these structures, just in case... */
        Elf32_Half      nsegs;          /* number of segments */
        struct elf32_fdpic_loadseg segs[];
};

#define ELF32_FDPIC_LOADMAP_VERSION     0x0000

/*
 * binfmt binary parameters structure
 */
struct elf_fdpic_params {
        struct elfhdr                   hdr;            /* ref copy of ELF header */
        struct elf_phdr                 *phdrs;         /* ref copy of PT_PHDR table */
        struct elf32_fdpic_loadmap      *loadmap;       /* loadmap to be passed to userspace */
        unsigned long                   elfhdr_addr;    /* mapped ELF header user address */
        unsigned long                   ph_addr;        /* mapped PT_PHDR user address */
        unsigned long                   map_addr;       /* mapped loadmap user address */
        unsigned long                   entry_addr;     /* mapped entry user address */
        unsigned long                   stack_size;     /* stack size requested (PT_GNU_STACK) */
        unsigned long                   dynamic_addr;   /* mapped PT_DYNAMIC user address */
        unsigned long                   load_addr;      /* user address at which to map binary */
        unsigned long                   flags;
#define ELF_FDPIC_FLAG_ARRANGEMENT      0x0000000f      /* PT_LOAD arrangement flags */
#define ELF_FDPIC_FLAG_INDEPENDENT      0x00000000      /* PT_LOADs can be put anywhere */
#define ELF_FDPIC_FLAG_HONOURVADDR      0x00000001      /* PT_LOAD.vaddr must be honoured */
#define ELF_FDPIC_FLAG_CONSTDISP        0x00000002      /* PT_LOADs require constant
                                                         * displacement */
#define ELF_FDPIC_FLAG_CONTIGUOUS       0x00000003      /* PT_LOADs should be contiguous */
#define ELF_FDPIC_FLAG_EXEC_STACK       0x00000010      /* T if stack to be executable */
#define ELF_FDPIC_FLAG_NOEXEC_STACK     0x00000020      /* T if stack not to be executable */
#define ELF_FDPIC_FLAG_EXECUTABLE       0x00000040      /* T if this object is the executable */
#define ELF_FDPIC_FLAG_PRESENT          0x80000000      /* T if this object is present */
};

#ifdef CONFIG_MMU
extern void elf_fdpic_arch_lay_out_mm(struct elf_fdpic_params *exec_params,
                                      struct elf_fdpic_params *interp_params,
                                      unsigned long *start_stack,
                                      unsigned long *start_brk);
#endif

#endif /* _LINUX_ELF_FDPIC_H */