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profile.h revision 1.6 
      1 /*	$NetBSD: profile.h,v 1.6 2002/02/07 05:13:35 briggs 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				\
     38 __asm("	.globl	_mcount			\n" \
     39 "	.type	_mcount,@function	\n" \
     40 "_mcount:				\n" \
     41 "	stwu	1,-64(1)		\n" \
     42 "	stw	3,16(1)			\n" \
     43 "	stw	4,20(1)			\n" \
     44 "	stw	5,24(1)			\n" \
     45 "	stw	6,28(1)			\n" \
     46 "	stw	7,32(1)			\n" \
     47 "	stw	8,36(1)			\n" \
     48 "	stw	9,40(1)			\n" \
     49 "	stw	10,44(1)		\n" \
     50 "					\n" \
     51 "	mflr	4			\n" \
     52 "	stw	4,48(1)			\n" \
     53 "	lwz	3,68(1)			\n" \
     54 "	bl	__mcount" _PLT "	\n" \
     55 "	lwz	3,68(1)			\n" \
     56 "	mtlr	3			\n" \
     57 "	lwz	4,48(1)			\n" \
     58 "	mtctr	4			\n" \
     59 "					\n" \
     60 "	lwz	3,16(1)			\n" \
     61 "	lwz	4,20(1)			\n" \
     62 "	lwz	5,24(1)			\n" \
     63 "	lwz	6,28(1)			\n" \
     64 "	lwz	7,32(1)			\n" \
     65 "	lwz	8,36(1)			\n" \
     66 "	lwz	9,40(1)			\n" \
     67 "	lwz	10,44(1)		\n" \
     68 "	addi	1,1,64			\n" \
     69 "	bctr				\n" \
     70 "_mcount_end:				\n" \
     71 "	.size	_mcount,_mcount_end-_mcount");
     72 
     73 #ifdef _KERNEL
     74 #define MCOUNT_ENTER						\
     75 	__asm volatile("mfmsr %0" : "=r"(s));			\
     76 	if ((s & (PSL_IR | PSL_DR)) != (PSL_IR | PSL_DR))	\
     77 		return;		/* XXX */			\
     78 	s &= ~PSL_POW;						\
     79 	__asm volatile("mtmsr %0" :: "r"(s & ~PSL_EE))
     80 
     81 #define MCOUNT_EXIT						\
     82 	__asm volatile("mtmsr %0" :: "r"(s))
     83 #endif
     84