sys/compat/svr4/svr4_exec_elf32.c

   1 /*      $NetBSD: svr4_exec_elf32.c,v 1.13 2007/10/19 12:16:40 ad Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1994 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: svr4_exec_elf32.c,v 1.13 2007/10/19 12:16:40 ad Exp $");
  34
  35 #define ELFSIZE         32                              /* XXX should die */
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/kernel.h>
  40 #include <sys/proc.h>
  41 #include <sys/malloc.h>
  42 #include <sys/namei.h>
  43 #include <sys/vnode.h>
  44 #include <sys/exec_elf.h>
  45 #include <sys/exec.h>
  46
  47 #include <sys/mman.h>
  48
  49 #include <sys/cpu.h>
  50 #include <machine/reg.h>
  51
  52 #include <compat/svr4/svr4_types.h>
  53 #include <compat/svr4/svr4_util.h>
  54 #include <compat/svr4/svr4_exec.h>
  55 #include <compat/svr4/svr4_errno.h>
  56
  57 int
  58 svr4_elf32_probe(
  59     struct lwp *l,
  60     struct exec_package *epp,
  61     void *eh,
  62     char *itp,
  63     vaddr_t *pos
  64 )
  65 {
  66         struct proc *p = l->l_proc;
  67         int error;
  68
  69         if (itp) {
  70                 if ((error = emul_find_interp(LIST_FIRST(&p->p_lwps), epp, itp)))
  71                         return error;
  72         }
  73 #ifdef SVR4_INTERP_ADDR
  74         *pos = SVR4_INTERP_ADDR;
  75 #endif
  76         return 0;
  77 }