text: /*	$NetBSD: profile.h,v 1.6 1995/03/28 18:17:08 jtc Exp $	*/
  
  /*
   * Copyright (c) 1992, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the University of
   *	California, Berkeley and its contributors.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   *	@(#)profile.h	8.1 (Berkeley) 6/11/93
   */
  
  /*
   * This file is taken from Cygwin distribution. Please keep it in sync.
   * The differences should be within __MINGW32__ guard.
   */
  /* If compiler doesn't inline, at least avoid passing args on the stack. */
  #define _MCOUNT_CALL __attribute__ ((regparm (2)))
  #define _MCOUNT_DECL static __inline__  void _MCOUNT_CALL _mcount
  
  /* FIXME: This works, but it would be cleaner to convert mcount into an
     assembler stub that calls an extern  _mcount. 
     Older versions of GCC (pre-4.1) will still fail with regparm since the
     compiler used %edx to store an unneeded counter variable.  */
  
  #define	MCOUNT \
  void									\
  mcount()								\
  {									\
  	u_long selfpc, frompcindex;					\
  	/*								\
  	 * Save registers, since this may be called from		\
  	 * the prologue of a regparm function.				\
  	 */								\
  	__asm __volatile__ ("pushl %eax\n\t"				\
  			    "pushl %ecx\n\t"				\
  		 	    "pushl %edx");				\
  	/*								\
  	 * find the return address for mcount,				\
  	 * and the return address for mcount's caller.			\
  	 *								\
  	 * selfpc = pc pushed by mcount call				\
  	 */								\
  	/* __asm  ("movl 4(%%ebp),%0" : "=r" (selfpc));	*/		\
  	selfpc = (u_long) __builtin_return_address (0);			\
  	/*								\
  	 * frompcindex = pc pushed by call into self.			\
  	 */								\
  	/*  __asm ("movl (%%ebp),%0;movl 4(%0),%0" : "=r" (frompcindex)); */  \
  	frompcindex = (u_long) __builtin_return_address (1);		\
  	_mcount(frompcindex, selfpc);					\
  	/*								\
  	 * Restore registers.						\
  	 */								\
  	__asm __volatile__ ("popl %edx\n\t"				\
  			    "popl %ecx\n\t"				\
  			    "popl %eax");				\
  }
  