/*	$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");				\

}