lib/csu/common_elf/common.h

   1 /* $NetBSD: common.h,v 1.12 2006/05/18 17:54:19 christos Exp $ */
   2
   3 /*
   4  * Copyright (c) 1995 Christopher G. Demetriou
   5  * 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *          This product includes software developed for the
  18  *          NetBSD Project.  See http://www.NetBSD.org/ for
  19  *          information about NetBSD.
  20  * 4. The name of the author may not be used to endorse or promote products
  21  *    derived from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
  35  */
  36
  37 #include <sys/types.h>
  38 #include <sys/exec.h>
  39 #include <sys/syscall.h>
  40
  41 #include <stdlib.h>
  42 #ifdef DYNAMIC
  43 #ifdef __weak_alias
  44 #define dlopen  _dlopen
  45 #define dlclose _dlclose
  46 #define dlsym   _dlsym
  47 #define dlerror _dlerror
  48 #define dladdr  _dladdr
  49 #endif
  50 #include <dlfcn.h>
  51 #include "rtld.h"
  52 #else
  53 typedef void Obj_Entry;
  54 #endif
  55
  56 extern quad_t   __syscall(quad_t, ...);
  57 #define _exit(v)        __syscall(SYS_exit, (v))
  58 #define write(fd, s, n) __syscall(SYS_write, (fd), (s), (n))
  59
  60 #define _FATAL(str)                             \
  61 do {                                            \
  62         write(2, str, sizeof(str)-1);           \
  63         _exit(1);                               \
  64 } while (0)
  65
  66 static char     *_strrchr(char *, int);
  67
  68 char    **environ;
  69 char    *__progname = "";
  70 struct ps_strings *__ps_strings = 0;
  71
  72 extern void     _init(void);
  73 extern void     _fini(void);
  74
  75 #ifdef DYNAMIC
  76 void    _rtld_setup(void (*)(void), const Obj_Entry *obj);
  77
  78 /*
  79  * Arrange for _DYNAMIC to be weak and undefined (and therefore to show up
  80  * as being at address zero, unless something else defines it).  That way,
  81  * if we happen to be compiling without -static but with without any
  82  * shared libs present, things will still work.
  83  */
  84 extern int _DYNAMIC __weak_reference(_DYNAMIC);
  85 #endif /* DYNAMIC */
  86
  87 #ifdef MCRT0
  88 extern void     monstartup(u_long, u_long);
  89 extern void     _mcleanup(void);
  90 extern unsigned char _etext, _eprol;
  91 #endif /* MCRT0 */
  92
  93 int main(int, char **, char **);