elf-fdpic.h

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/* FDPIC ELF load map
 *
 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 *
 * 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 <uapi/linux/elf-fdpic.h>

/*
 * 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 */