sys/compat/svr4_32/svr4_32_mod.c

   1 /*      $NetBSD$        */
   2
   3 /*-
   4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software developed for The NetBSD Foundation
   8  * by Andrew Doran.
   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, "$NetBSD$");
  34
  35 #ifndef ELFSIZE
  36 #define ELFSIZE ARCH_ELFSIZE
  37 #endif
  38
  39 #include <sys/param.h>
  40 #include <sys/module.h>
  41 #include <sys/exec.h>
  42 #include <sys/exec_elf.h>
  43
  44 #include <compat/netbsd32/netbsd32.h>
  45
  46 #include <compat/svr4_32/svr4_32_util.h>
  47 #include <compat/svr4_32/svr4_32_exec.h>
  48
  49 #if defined(EXEC_ELF32) && ELFSIZE == 32
  50 # define        MD1     ",exec_elf32"
  51 #else
  52 # define        MD1     ""
  53 #endif
  54
  55 MODULE(MODULE_CLASS_MISC, compat_svr4_32, "compat,compat_netbsd32" MD1);
  56
  57 static struct execsw svr4_32_execsw[] = {
  58 #if defined(EXEC_ELF32)
  59         { sizeof (Elf32_Ehdr),
  60           exec_elf32_makecmds,
  61           { svr4_32_elf32_probe },
  62           &emul_svr4_32,
  63           EXECSW_PRIO_LAST,      /* probe always succeeds */
  64           SVR4_32_AUX_ARGSIZ,
  65           svr4_32_copyargs,
  66           NULL,
  67           coredump_elf32,
  68           exec_setup_stack },
  69 #endif
  70 };
  71
  72 static int
  73 compat_svr4_32_modcmd(modcmd_t cmd, void *arg)
  74 {
  75
  76         switch (cmd) {
  77         case MODULE_CMD_INIT:
  78                 return exec_add(svr4_32_execsw,
  79                     __arraycount(svr4_32_execsw));
  80
  81         case MODULE_CMD_FINI:
  82                 return exec_remove(svr4_32_execsw,
  83                     __arraycount(svr4_32_execsw));
  84
  85         default:
  86                 return ENOTTY;
  87         }
  88 }