libexec/rtld-elf/debug.h

   1 /*-
   2  * Copyright 1996-1998 John D. Polstra.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  * $FreeBSD$
  26  */
  27
  28 /*
  29  * Support for printing debugging messages.
  30  */
  31
  32 #ifndef DEBUG_H
  33 #define DEBUG_H 1
  34
  35 #ifndef __GNUC__
  36 #error "This file must be compiled with GCC"
  37 #endif
  38
  39 #include <sys/cdefs.h>
  40
  41 #include <string.h>
  42 #include <unistd.h>
  43
  44 extern void debug_printf(const char *, ...) __printflike(1, 2);
  45 extern int debug;
  46
  47 #ifdef DEBUG
  48 #define dbg(...)        debug_printf(__VA_ARGS__)
  49 #else
  50 #define dbg(...)        ((void) 0)
  51 #endif
  52
  53 #define _MYNAME "ld-elf.so.2"
  54 #define assert(cond)    ((cond) ? (void) 0 :            \
  55     (msg(_MYNAME ": assert failed: " __FILE__ ":"       \
  56       __XSTRING(__LINE__) "\n"), abort()))
  57 #define msg(s)          write(STDOUT_FILENO, s, strlen(s))
  58 #define trace()         msg(_MYNAME ": " __XSTRING(__LINE__) "\n")
  59
  60
  61 #endif /* DEBUG_H */