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/compat/freebsd/freebsd_exec.h

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    1 /*      $NetBSD: freebsd_exec.h,v 1.15 2007/12/04 18:40:08 dsl Exp $    */
    2 
    3 /*-
    4  * Copyright (c) 1992, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  *      from: @(#)exec.h        8.1 (Berkeley) 6/11/93
   32  *      from: imgact_aout.h,v 1.2 1994/12/30 08:06:19 bde Exp
   33  */
   34 
   35 #ifndef _FREEBSD_EXEC_H
   36 #define _FREEBSD_EXEC_H
   37 
   38 #ifdef EXEC_AOUT
   39 #define FREEBSD_N_GETMAGIC(ex) \
   40         ( (ex).a_midmag & 0xffff )
   41 #define FREEBSD_N_GETMID(ex) \
   42         ( ((ex).a_midmag >> 16) & 0x03ff )
   43 #define FREEBSD_N_GETFLAG(ex) \
   44         ( ((ex).a_midmag >> 26) & 0x3f )
   45 #define FREEBSD_N_SETMAGIC(ex,mag,mid,flag) \
   46         ( (ex).a_midmag = (((flag) & 0x3f) <<26) | (((mid) & 0x03ff) << 16) | \
   47         ((mag) & 0xffff) )
   48 
   49 #define FREEBSD_N_ALIGN(ex,x) \
   50         (FREEBSD_N_GETMAGIC(ex) == ZMAGIC || \
   51          FREEBSD_N_GETMAGIC(ex) == QMAGIC ? \
   52          ((x) + FREEBSD___LDPGSZ - 1) & \
   53          ~(unsigned long)(FREEBSD___LDPGSZ - 1) : (x))
   54 
   55 /* Valid magic number check. */
   56 #define FREEBSD_N_BADMAG(ex) \
   57         (FREEBSD_N_GETMAGIC(ex) != OMAGIC && \
   58          FREEBSD_N_GETMAGIC(ex) != NMAGIC && \
   59          FREEBSD_N_GETMAGIC(ex) != ZMAGIC && \
   60          FREEBSD_N_GETMAGIC(ex) != QMAGIC)
   61 
   62 /* Address of the bottom of the text segment. */
   63 #define FREEBSD_N_TXTADDR(ex) \
   64         ((FREEBSD_N_GETMAGIC(ex) == OMAGIC || \
   65           FREEBSD_N_GETMAGIC(ex) == NMAGIC || \
   66           FREEBSD_N_GETMAGIC(ex) == ZMAGIC) ? 0 : AOUT_LDPGSZ)
   67 
   68 /* Address of the bottom of the data segment. */
   69 #define FREEBSD_N_DATADDR(ex) \
   70         FREEBSD_N_ALIGN(ex, FREEBSD_N_TXTADDR(ex) + (ex).a_text)
   71 
   72 /* Text segment offset. */
   73 #define FREEBSD_N_TXTOFF(ex) \
   74         (FREEBSD_N_GETMAGIC(ex) == ZMAGIC ? AOUT_LDPGSZ : \
   75          FREEBSD_N_GETMAGIC(ex) == QMAGIC ? 0 : sizeof(struct exec))
   76 
   77 /* Data segment offset. */
   78 #define FREEBSD_N_DATOFF(ex) \
   79         FREEBSD_N_ALIGN(ex, FREEBSD_N_TXTOFF(ex) + (ex).a_text)
   80 
   81 /* Relocation table offset. */
   82 #define FREEBSD_N_RELOFF(ex) \
   83         FREEBSD_N_ALIGN(ex, FREEBSD_N_DATOFF(ex) + (ex).a_data)
   84 
   85 /* Symbol table offset. */
   86 #define FREEBSD_N_SYMOFF(ex) \
   87         (FREEBSD_N_RELOFF(ex) + (ex).a_trsize + (ex).a_drsize)
   88 
   89 /* String table offset. */
   90 #define FREEBSD_N_STROFF(ex)    (FREEBSD_N_SYMOFF(ex) + (ex).a_syms)
   91 
   92 #define FREEBSD_AOUT_HDR_SIZE   sizeof(struct exec)
   93 
   94 int exec_freebsd_aout_makecmds(struct lwp *, struct exec_package *);
   95 
   96 #endif /* EXEC_AOUT */
   97 
   98 #ifdef EXEC_ELF32
   99 #define FREEBSD_ELF_BRAND_STRING "FreeBSD"
  100 #define FREEBSD_ELF_INTERP_PREFIX_STRING "/usr/libexec/ld-elf.so"
  101 
  102 int freebsd_elf32_probe(struct lwp *, struct exec_package *, void *,
  103     char *, vaddr_t *);
  104 #endif /* EXEC_ELF32 */
  105 
  106 void freebsd_setregs(struct lwp *, struct exec_package *, u_long);
  107 
  108 extern char freebsd_sigcode[], freebsd_esigcode[];
  109 extern const struct emul emul_freebsd;
  110 
  111 #endif /* !_FREEBSD_EXEC_H */

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