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profile.h revision 1.5 
      1 /*	$NetBSD: profile.h,v 1.5 2000/04/18 17:06:01 tsubai Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 Tsubai Masanari.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #define	_MCOUNT_DECL	void mcount
     30 
     31 #ifdef PIC
     32 #define _PLT "@plt"
     33 #else
     34 #define _PLT
     35 #endif
     36 
     37 #define MCOUNT __asm("		\
     38 	.globl _mcount;		\
     39 _mcount:			\
     40 	stwu	1,-64(1);	\
     41 	stw	3,16(1);	\
     42 	stw	4,20(1);	\
     43 	stw	5,24(1);	\
     44 	stw	6,28(1);	\
     45 	stw	7,32(1);	\
     46 	stw	8,36(1);	\
     47 	stw	9,40(1);	\
     48 	stw	10,44(1);	\
     49 				\
     50 	mflr	4;		\
     51 	stw	4,48(1);	\
     52 	lwz	3,68(1);	\
     53 	bl	mcount" _PLT ";	\
     54 	lwz	3,68(1);	\
     55 	mtlr	3;		\
     56 	lwz	4,48(1);	\
     57 	mtctr	4;		\
     58 				\
     59 	lwz	3,16(1);	\
     60 	lwz	4,20(1);	\
     61 	lwz	5,24(1);	\
     62 	lwz	6,28(1);	\
     63 	lwz	7,32(1);	\
     64 	lwz	8,36(1);	\
     65 	lwz	9,40(1);	\
     66 	lwz	10,44(1);	\
     67 	addi	1,1,64;		\
     68 	bctr;			");
     69 
     70 #ifdef _KERNEL
     71 #define MCOUNT_ENTER						\
     72 	__asm volatile("mfmsr %0" : "=r"(s));			\
     73 	if ((s & (PSL_IR | PSL_DR)) != (PSL_IR | PSL_DR))	\
     74 		return;		/* XXX */			\
     75 	s &= ~PSL_POW;						\
     76 	__asm volatile("mtmsr %0" :: "r"(s & ~PSL_EE))
     77 
     78 #define MCOUNT_EXIT						\
     79 	__asm volatile("mtmsr %0" :: "r"(s))
     80 #endif
     81