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profile.h revision 1.22 
      1 /*	$NetBSD: profile.h,v 1.22 2020/07/26 08:08:41 simonb Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Ralph Campbell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)profile.h	8.1 (Berkeley) 6/10/93
     35  */
     36 
     37 #ifndef _MIPS_PROFILE_H_
     38 #define	_MIPS_PROFILE_H_
     39 
     40 #ifdef _KERNEL
     41  /*
     42   *  Declare non-profiled _splhigh() /_splx() entrypoints for _mcount.
     43   *  see MCOUNT_ENTER and MCOUNT_EXIT.
     44   */
     45 #define	_KERNEL_MCOUNT_DECL		\
     46 	int splhigh_noprof(void);	\
     47 	void splx_noprof(int);
     48 #else   /* !_KERNEL */
     49 /* Make __mcount static. */
     50 #define	_KERNEL_MCOUNT_DECL	static
     51 #endif	/* !_KERNEL */
     52 
     53 #ifdef _KERNEL
     54 # define _PROF_CPLOAD	""
     55 #else
     56 # define _PROF_CPLOAD	".cpload $25;"
     57 #endif
     58 
     59 
     60 #define	_MCOUNT_DECL \
     61     _KERNEL_MCOUNT_DECL \
     62     void __attribute__((unused)) __mcount
     63 
     64 #define	MCOUNT \
     65 	__asm(".globl _mcount;" \
     66 	".type _mcount,@function;" \
     67 	"_mcount:;" \
     68 	".set noreorder;" \
     69 	".set noat;" \
     70 	_PROF_CPLOAD \
     71 	"addu $29,$29,-16;" \
     72 	"sw $4,8($29);" \
     73 	"sw $5,12($29);" \
     74 	"sw $6,16($29);" \
     75 	"sw $7,20($29);" \
     76 	"sw $1,0($29);" \
     77 	"sw $31,4($29);" \
     78 	"move $5,$31;" \
     79 	"move $4,$1;" \
     80 	"jal __mcount;" \
     81 	"nop;" \
     82 	"lw $4,8($29);" \
     83 	"lw $5,12($29);" \
     84 	"lw $6,16($29);" \
     85 	"lw $7,20($29);" \
     86 	"lw $31,4($29);" \
     87 	"lw $1,0($29);" \
     88 	"addu $29,$29,24;" \
     89 	"j $31;" \
     90 	"move $31,$1;" \
     91 	".set reorder;" \
     92 	".set at");
     93 
     94 #ifdef _KERNEL
     95 /*
     96  * The following two macros do splhigh and splx respectively.
     97  * We use versions of _splraise() and _splset that don't
     98  * including profiling support.
     99  */
    100 
    101 #define	MCOUNT_ENTER	s = splhigh_noprof()
    102 
    103 #define	MCOUNT_EXIT	splx_noprof(s)
    104 #endif /* _KERNEL */
    105 
    106 #endif /* _MIPS_PROFILE_H_ */
    107