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profile.h revision 1.14 
      1 /*	$NetBSD: profile.h,v 1.14 2005/12/11 12:19:06 christos Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This software was developed by the Computer Systems Engineering group
      8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      9  * contributed to Berkeley.
     10  *
     11  * All advertising materials mentioning features or use of this software
     12  * must display the following acknowledgement:
     13  *	This product includes software developed by the University of
     14  *	California, Lawrence Berkeley Laboratory.
     15  *
     16  * Redistribution and use in source and binary forms, with or without
     17  * modification, are permitted provided that the following conditions
     18  * are met:
     19  * 1. Redistributions of source code must retain the above copyright
     20  *    notice, this list of conditions and the following disclaimer.
     21  * 2. Redistributions in binary form must reproduce the above copyright
     22  *    notice, this list of conditions and the following disclaimer in the
     23  *    documentation and/or other materials provided with the distribution.
     24  * 3. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  *	@(#)profile.h	8.1 (Berkeley) 6/11/93
     41  */
     42 
     43 #ifdef __ELF__
     44 #define _MCOUNT_SYM "__mcount"
     45 #define	_MCOUNT_ENTRY "_mcount"
     46 #else
     47 #define _MCOUNT_SYM "___mcount"
     48 #define	_MCOUNT_ENTRY "mcount"
     49 #endif
     50 
     51 #ifdef PIC
     52 /* Inline expansion of PICCY_SET() (see <machine/asm.h>). */
     53 #ifdef __arch64__
     54 #define MCOUNT \
     55 	__asm__(".global " _MCOUNT_ENTRY);\
     56 	__asm__(_MCOUNT_ENTRY ":");\
     57 	__asm__("add %o7, 8, %o1");\
     58 	__asm__("1: rd %pc, %o2");\
     59 	__asm__("add %o2," _MCOUNT_SYM "-1b, %o2");\
     60 	__asm__("ld [%o2], %o2");\
     61 	__asm__("jmpl %o2, %g0");\
     62 	__asm__("add %i7, 8, %o0");
     63 #else
     64 #define MCOUNT \
     65 	__asm__(".global " _MCOUNT_ENTRY);\
     66 	__asm__(_MCOUNT_ENTRY ":");\
     67 	__asm__("add %o7, 8, %o1");\
     68 	__asm__("1: call 2f; nop; 2:");\
     69 	__asm__("add %o7," _MCOUNT_SYM "-1b, %o2");\
     70 	__asm__("ld [%o2], %o2");\
     71 	__asm__("jmpl %o2, %g0");\
     72 	__asm__("add %i7, 8, %o0");
     73 #endif
     74 #else
     75 #define MCOUNT \
     76 	__asm__(".global " _MCOUNT_ENTRY);\
     77 	__asm__(_MCOUNT_ENTRY ":");\
     78 	__asm__("add %i7, 8, %o0");\
     79 	__asm__("sethi %hi(" _MCOUNT_SYM "), %o2");\
     80 	__asm__("jmpl %o2 + %lo(" _MCOUNT_SYM "), %g0");\
     81 	__asm__("add %o7, 8, %o1");
     82 #endif
     83 
     84 #define	_MCOUNT_DECL	static void __mcount
     85 
     86 #ifdef _KERNEL
     87 /*
     88  * Block interrupts during mcount so that those interrupts can also be
     89  * counted (as soon as we get done with the current counting).  On the
     90  * SPARC, we just splhigh/splx as those do not recursively invoke mcount.
     91  */
     92 #define	MCOUNT_ENTER	s = splhigh()
     93 #define	MCOUNT_EXIT	splx(s)
     94 #endif /* _KERNEL */
     95