lib/csu/common_aout/common.h

   1 /*      $NetBSD: common.h,v 1.14 2005/12/24 22:53:15 perry Exp $        */
   2
   3 /*-
   4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Paul Kranenburg.
   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 <string.h>
  33
  34 #ifdef DYNAMIC
  35
  36 #include <sys/syscall.h>
  37 #include <a.out.h>
  38 #ifndef N_GETMAGIC
  39 #define N_GETMAGIC(x)   ((x).a_magic)
  40 #endif
  41 #ifndef N_BSSADDR
  42 #define N_BSSADDR(x)    (N_DATADDR(x)+(x).a_data)
  43 #endif
  44
  45 #include <sys/mman.h>
  46 #ifdef sun
  47 #define MAP_ANON        0
  48 #endif
  49
  50 #include <dlfcn.h>
  51 #include <link.h>
  52
  53 extern struct _dynamic  _DYNAMIC;
  54 static void             __load_rtld __P((struct _dynamic *));
  55 extern int              __syscall __P((int, ...));
  56 int                     _callmain __P((void));
  57 static char             *_strrchr __P((char *, char));
  58 #ifdef DEBUG
  59 static char             *_getenv __P((char *));
  60 static int              _strncmp __P((char *, char *, int));
  61 #endif
  62
  63 #ifdef sun
  64 #define LDSO    "/usr/lib/ld.so"
  65 #endif
  66 #ifdef __NetBSD__
  67 #ifndef LDSO
  68 #define LDSO    "/usr/libexec/ld.so"
  69 #endif
  70 #endif
  71
  72 /*
  73  * We need these system calls, but can't use library stubs
  74  */
  75 #define _exit(v)                __syscall(SYS_exit, (v))
  76 #define open(name, f, m)        __syscall(SYS_open, (name), (f), (m))
  77 #define close(fd)               __syscall(SYS_close, (fd))
  78 #define read(fd, s, n)          __syscall(SYS_read, (fd), (s), (n))
  79 #define write(fd, s, n)         __syscall(SYS_write, (fd), (s), (n))
  80 #define dup(fd)                 __syscall(SYS_dup, (fd))
  81 #define dup2(fd, fdnew)         __syscall(SYS_dup2, (fd), (fdnew))
  82 #ifdef sun
  83 #define mmap(addr, len, prot, flags, fd, off)   \
  84     __syscall(SYS_mmap, (addr), (len), (prot), _MAP_NEW|(flags), (fd), (off))
  85 #else
  86 #define mmap(addr, len, prot, flags, fd, off)   \
  87     __syscall(SYS___syscall, (quad_t)SYS_mmap, (addr), (len), (prot), (flags), \
  88         (fd), 0, (off_t)(off))
  89 #endif
  90
  91 #define _FATAL(str) \
  92         write(2, str, sizeof(str) - 1), \
  93         _exit(1);
  94
  95 #endif /* DYNAMIC */
  96
  97 extern int              main __P((int, char **, char **));
  98 #ifdef MCRT0
  99 extern void             monstartup __P((u_long, u_long));
 100 extern void             _mcleanup __P((void));
 101 #endif
 102
 103 char                    **environ;
 104 int                     errno;
 105 static char             empty[1];
 106 char                    *__progname = empty;
 107 struct ps_strings;
 108 struct ps_strings       *__ps_strings = 0;
 109 #ifndef DYNAMIC
 110 #define _strrchr        strrchr
 111 #endif
 112
 113 extern unsigned char    etext;
 114 extern unsigned char    eprol __asm ("eprol");
 115