FreeBSD/Linux Kernel Cross Reference
sys/sys/imgact_elf.h

     /*-
      * Copyright (c) 1995-1996 Søren Schmidt
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer
     *    in this position and unchanged.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD: releng/11.0/sys/sys/imgact_elf.h 298981 2016-05-03 15:14:17Z pfg $
     */
    
    #ifndef _SYS_IMGACT_ELF_H_
    #define _SYS_IMGACT_ELF_H_
    
    #include <machine/elf.h>
    
    #ifdef _KERNEL
    
    #define AUXARGS_ENTRY(pos, id, val) {suword(pos++, id); suword(pos++, val);}
    
    struct image_params;
    struct thread;
    
    /*
     * Structure used to pass information from the loader to the
     * stack fixup routine.
     */
    typedef struct {
            Elf_Ssize       execfd;
            Elf_Size        phdr;
            Elf_Size        phent;
            Elf_Size        phnum;
            Elf_Size        pagesz;
            Elf_Size        base;
            Elf_Size        flags;
            Elf_Size        entry;
            Elf_Word        hdr_eflags;             /* e_flags field from ehdr */
    } __ElfN(Auxargs);
    
    typedef struct {
            Elf_Note        hdr;
            const char *    vendor;
            int             flags;
            boolean_t       (*trans_osrel)(const Elf_Note *, int32_t *);
    #define BN_CAN_FETCH_OSREL      0x0001  /* Deprecated. */
    #define BN_TRANSLATE_OSREL      0x0002  /* Use trans_osrel to fetch osrel */
                    /* after checking the image ABI specification, if needed. */
    } Elf_Brandnote;
    
    typedef struct {
            int brand;
            int machine;
            const char *compat_3_brand;     /* pre Binutils 2.10 method (FBSD 3) */
            const char *emul_path;
            const char *interp_path;
            struct sysentvec *sysvec;
            const char *interp_newpath;
            int flags;
            Elf_Brandnote *brand_note;
            boolean_t       (*header_supported)(struct image_params *);
    #define BI_CAN_EXEC_DYN         0x0001
    #define BI_BRAND_NOTE           0x0002  /* May have note.ABI-tag section. */
    #define BI_BRAND_NOTE_MANDATORY 0x0004  /* Must have note.ABI-tag section. */
    } __ElfN(Brandinfo);
    
    __ElfType(Auxargs);
    __ElfType(Brandinfo);
    
    #define MAX_BRANDS      8
    
    int     __elfN(brand_inuse)(Elf_Brandinfo *entry);
    int     __elfN(insert_brand_entry)(Elf_Brandinfo *entry);
    int     __elfN(remove_brand_entry)(Elf_Brandinfo *entry);
    int     __elfN(freebsd_fixup)(register_t **, struct image_params *);
    int     __elfN(coredump)(struct thread *, struct vnode *, off_t, int);
    size_t  __elfN(populate_note)(int, void *, void *, size_t, void **);
    
    /* Machine specific function to dump per-thread information. */
    void    __elfN(dump_thread)(struct thread *, void *, size_t *);
    
   extern int __elfN(fallback_brand);
   extern Elf_Brandnote __elfN(freebsd_brandnote);
   extern Elf_Brandnote __elfN(kfreebsd_brandnote);
   #endif /* _KERNEL */
   
   #endif /* !_SYS_IMGACT_ELF_H_ */

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