The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/include/profile.h

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    1 /*      $OpenBSD: profile.h,v 1.2 1999/01/27 04:46:05 imp Exp $ */
    2 /*-
    3  * SPDX-License-Identifier: BSD-3-Clause
    4  *
    5  * Copyright (c) 1992, 1993
    6  *      The Regents of the University of California.  All rights reserved.
    7  *
    8  * This code is derived from software contributed to Berkeley by
    9  * Ralph Campbell.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  * 3. Neither the name of the University nor the names of its contributors
   20  *    may be used to endorse or promote products derived from this software
   21  *    without specific prior written permission.
   22  *
   23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   33  * SUCH DAMAGE.
   34  *
   35  *      from: @(#)profile.h     8.1 (Berkeley) 6/10/93
   36  *      JNPR: profile.h,v 1.4 2006/12/02 09:53:41 katta
   37  * $FreeBSD$
   38  */
   39 #ifndef _MACHINE_PROFILE_H_
   40 #define _MACHINE_PROFILE_H_
   41 
   42 #define _MCOUNT_DECL void ___mcount
   43 
   44 /*XXX The cprestore instruction is a "dummy" to shut up as(1). */
   45 
   46 /*XXX This is not MIPS64 safe. */
   47 
   48 #define MCOUNT \
   49         __asm(".text;"                  \
   50         ".globl _mcount;"               \
   51         ".type _mcount,@function;"      \
   52         "_mcount:;"                     \
   53         ".set noreorder;"               \
   54         ".set noat;"                    \
   55         ".cpload $25;"                  \
   56         ".cprestore 4;"                 \
   57         "sw $4,8($29);"                 \
   58         "sw $5,12($29);"                \
   59         "sw $6,16($29);"                \
   60         "sw $7,20($29);"                \
   61         "sw $1,0($29);"                 \
   62         "sw $31,4($29);"                \
   63         "move $5,$31;"                  \
   64         "jal ___mcount;"                \
   65         "move $4,$1;"                   \
   66         "lw $4,8($29);"                 \
   67         "lw $5,12($29);"                \
   68         "lw $6,16($29);"                \
   69         "lw $7,20($29);"                \
   70         "lw $31,4($29);"                \
   71         "lw $1,0($29);"                 \
   72         "addu $29,$29,8;"               \
   73         "j $31;"                        \
   74         "move $31,$1;"                  \
   75         ".set reorder;"                 \
   76         ".set at");
   77 
   78 #ifdef _KERNEL
   79 #define MCOUNT_DECL(s)  u_long s;
   80 #ifdef SMP
   81 extern int      mcount_lock;
   82 #define MCOUNT_ENTER(s) {                                       \
   83         s = intr_disable();                                     \
   84         while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1))      \
   85                 /* nothing */ ;                                 \
   86 }
   87 #define MCOUNT_EXIT(s)  {                                       \
   88         atomic_store_rel_int(&mcount_lock, 0);                  \
   89         intr_restore(s);                                                \
   90 }
   91 #else
   92 #define MCOUNT_ENTER(s) { s = intr_disable(); }
   93 #define MCOUNT_EXIT(s)  (intr_restore(s))
   94 #endif
   95 
   96 /* REVISIT for mips */
   97 /*
   98  * Config generates something to tell the compiler to align functions on 16
   99  * byte boundaries.  A strict alignment is good for keeping the tables small.
  100  */
  101 #define FUNCTION_ALIGNMENT      16
  102 
  103 #ifdef GUPROF
  104 struct gmonparam;
  105 void    stopguprof __P((struct gmonparam *p));
  106 #else
  107 #define stopguprof(p)
  108 #endif /* GUPROF */
  109 
  110 #else   /* !_KERNEL */
  111 
  112 #define FUNCTION_ALIGNMENT      4
  113 
  114 #ifdef __mips_n64
  115 typedef u_long  uintfptr_t;
  116 #else
  117 typedef u_int   uintfptr_t;
  118 #endif
  119 
  120 #endif /* _KERNEL */
  121 
  122 /*
  123  * An unsigned integral type that can hold non-negative difference between
  124  * function pointers.
  125  */
  126 #ifdef __mips_n64
  127 typedef u_long  fptrdiff_t;
  128 #else
  129 typedef u_int   fptrdiff_t;
  130 #endif
  131 
  132 #ifdef _KERNEL
  133 
  134 void    mcount(uintfptr_t frompc, uintfptr_t selfpc);
  135 
  136 #ifdef GUPROF
  137 struct gmonparam;
  138 
  139 void    nullfunc_loop_profiled(void);
  140 void    nullfunc_profiled(void);
  141 void    startguprof(struct gmonparam *p);
  142 void    stopguprof(struct gmonparam *p);
  143 #else
  144 #define startguprof(p)
  145 #define stopguprof(p)
  146 #endif /* GUPROF */
  147 
  148 #else /* !_KERNEL */
  149 
  150 #include <sys/cdefs.h>
  151 
  152 __BEGIN_DECLS
  153 #ifdef __GNUC__
  154 #ifdef __ELF__
  155 void    mcount(void) __asm(".mcount");
  156 #else
  157 void    mcount(void) __asm("mcount");
  158 #endif
  159 #endif
  160 void    _mcount(uintfptr_t frompc, uintfptr_t selfpc);
  161 __END_DECLS
  162 
  163 #endif /* _KERNEL */
  164 
  165 #ifdef GUPROF
  166 /* XXX doesn't quite work outside kernel yet. */
  167 extern int      cputime_bias;
  168 
  169 __BEGIN_DECLS
  170 int     cputime(void);
  171 void    empty_loop(void);
  172 void    mexitcount(uintfptr_t selfpc);
  173 void    nullfunc(void);
  174 void    nullfunc_loop(void);
  175 __END_DECLS
  176 #endif
  177 
  178 #endif /* !_MACHINE_PROFILE_H_ */

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