The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*-
    2  * Copyright (c) 1995-1996 Søren Schmidt
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer
   10  *    in this position and unchanged.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. The name of the author may not be used to endorse or promote products
   15  *    derived from this software without specific prior written permission
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   27  *
   28  * $FreeBSD: releng/8.1/sys/sys/imgact_elf.h 199583 2009-11-20 15:27:52Z jhb $
   29  */
   30 
   31 #ifndef _SYS_IMGACT_ELF_H_
   32 #define _SYS_IMGACT_ELF_H_
   33 
   34 #include <machine/elf.h>
   35 
   36 #ifdef _KERNEL
   37 
   38 #define AUXARGS_ENTRY(pos, id, val) {suword(pos++, id); suword(pos++, val);}
   39 
   40 struct thread;
   41 
   42 /*
   43  * Structure used to pass infomation from the loader to the
   44  * stack fixup routine.
   45  */
   46 typedef struct {
   47         Elf_Ssize       execfd;
   48         Elf_Size        phdr;
   49         Elf_Size        phent;
   50         Elf_Size        phnum;
   51         Elf_Size        pagesz;
   52         Elf_Size        base;
   53         Elf_Size        flags;
   54         Elf_Size        entry;
   55 } __ElfN(Auxargs);
   56 
   57 typedef struct {
   58         Elf_Note        hdr;
   59         const char *    vendor;
   60         int             flags;
   61         boolean_t       (*trans_osrel)(const Elf_Note *, int32_t *);
   62 #define BN_CAN_FETCH_OSREL      0x0001  /* Deprecated. */
   63 #define BN_TRANSLATE_OSREL      0x0002  /* Use trans_osrel fetch osrel after */
   64                                         /* checking ABI contraint if needed. */
   65 } Elf_Brandnote;
   66 
   67 typedef struct {
   68         int brand;
   69         int machine;
   70         const char *compat_3_brand;     /* pre Binutils 2.10 method (FBSD 3) */
   71         const char *emul_path;
   72         const char *interp_path;
   73         struct sysentvec *sysvec;
   74         const char *interp_newpath;
   75         int flags;
   76         Elf_Brandnote *brand_note;
   77 #define BI_CAN_EXEC_DYN         0x0001
   78 #define BI_BRAND_NOTE           0x0002  /* May have note.ABI-tag section. */
   79 #define BI_BRAND_NOTE_MANDATORY 0x0004  /* Must have note.ABI-tag section. */
   80 } __ElfN(Brandinfo);
   81 
   82 __ElfType(Auxargs);
   83 __ElfType(Brandinfo);
   84 
   85 #define MAX_BRANDS      8
   86 
   87 int     __elfN(brand_inuse)(Elf_Brandinfo *entry);
   88 int     __elfN(insert_brand_entry)(Elf_Brandinfo *entry);
   89 int     __elfN(remove_brand_entry)(Elf_Brandinfo *entry);
   90 int     __elfN(freebsd_fixup)(register_t **, struct image_params *);
   91 int     __elfN(coredump)(struct thread *, struct vnode *, off_t);
   92 
   93 /* Machine specific function to dump per-thread information. */
   94 void    __elfN(dump_thread)(struct thread *, void *, size_t *);
   95 
   96 extern int __elfN(fallback_brand);
   97 extern Elf_Brandnote __elfN(freebsd_brandnote);
   98 extern Elf_Brandnote __elfN(kfreebsd_brandnote);
   99 #endif /* _KERNEL */
  100 
  101 #endif /* !_SYS_IMGACT_ELF_H_ */

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