sys/compat/ibcs2/ibcs2_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 #ifdef _KERNEL_OPT
  36 #include "opt_execfmt.h"
  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 #include <sys/exec_coff.h>
  44 #include <sys/signalvar.h>
  45
  46 #include <machine/ibcs2_machdep.h>
  47
  48 #include <compat/ibcs2/ibcs2_exec.h>
  49 #include <compat/ibcs2/ibcs2_exec.h>
  50
  51 #if defined(EXEC_ELF32)
  52 # define        MD1     ",exec_elf32"
  53 #else
  54 # define        MD1     ""
  55 #endif
  56
  57 MODULE(MODULE_CLASS_MISC, compat_ibcs2, "compat" MD1);
  58
  59 #define ELF32_AUXSIZE (howmany(ELF_AUX_ENTRIES * sizeof(Aux32Info), \
  60     sizeof(Elf32_Addr)) + MAXPATHLEN + ALIGN(1))
  61 #define ELF64_AUXSIZE (howmany(ELF_AUX_ENTRIES * sizeof(Aux64Info), \
  62     sizeof(Elf64_Addr)) + MAXPATHLEN + ALIGN(1))
  63
  64 static struct execsw ibcs2_execsw[] = {
  65 #ifdef EXEC_ELF32
  66         { sizeof (Elf32_Ehdr),
  67           exec_elf32_makecmds,
  68           { ibcs2_elf32_probe },
  69           &emul_ibcs2,
  70           EXECSW_PRIO_ANY,
  71           ELF32_AUXSIZE,
  72           elf32_copyargs,
  73           NULL,
  74           coredump_elf32,
  75           exec_setup_stack },
  76 #endif
  77         { COFF_HDR_SIZE,
  78           exec_ibcs2_coff_makecmds,
  79           { NULL },
  80           &emul_ibcs2,
  81           EXECSW_PRIO_ANY,
  82           0,
  83           copyargs,
  84           NULL,
  85           coredump_netbsd,
  86           ibcs2_exec_setup_stack },
  87
  88         { XOUT_HDR_SIZE,
  89           exec_ibcs2_xout_makecmds,
  90           { NULL },
  91           &emul_ibcs2,
  92           EXECSW_PRIO_ANY,
  93           0,
  94           copyargs,
  95           NULL,
  96           coredump_netbsd,
  97           ibcs2_exec_setup_stack },
  98
  99 };
 100
 101 static int
 102 compat_ibcs2_modcmd(modcmd_t cmd, void *arg)
 103 {
 104
 105         switch (cmd) {
 106         case MODULE_CMD_INIT:
 107                 return exec_add(ibcs2_execsw, __arraycount(ibcs2_execsw));
 108
 109         case MODULE_CMD_FINI:
 110                 return exec_remove(ibcs2_execsw, __arraycount(ibcs2_execsw));
 111
 112         default:
 113                 return ENOTTY;
 114         }
 115 }