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  * Copyright (c) 1992, 1993
    4  *      The Regents of the University of California.  All rights reserved.
    5  *
    6  * This code is derived from software contributed to Berkeley by
    7  * Ralph Campbell.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 4. Neither the name of the University nor the names of its contributors
   18  *    may be used to endorse or promote products derived from this software
   19  *    without specific prior written permission.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   31  * SUCH DAMAGE.
   32  *
   33  *      from: @(#)profile.h     8.1 (Berkeley) 6/10/93
   34  *      JNPR: profile.h,v 1.4 2006/12/02 09:53:41 katta
   35  * $FreeBSD: stable/8/sys/mips/include/profile.h 215938 2010-11-27 12:26:40Z jchandra $
   36  */
   37 #ifndef _MACHINE_PROFILE_H_
   38 #define _MACHINE_PROFILE_H_
   39 
   40 #define _MCOUNT_DECL void ___mcount
   41 
   42 /*XXX The cprestore instruction is a "dummy" to shut up as(1). */
   43 
   44 /*XXX This is not MIPS64 safe. */
   45 
   46 #define MCOUNT \
   47         __asm(".globl _mcount;"         \
   48         ".type _mcount,@function;"      \
   49         "_mcount:;"                     \
   50         ".set noreorder;"               \
   51         ".set noat;"                    \
   52         ".cpload $25;"                  \
   53         ".cprestore 4;"                 \
   54         "sw $4,8($29);"                 \
   55         "sw $5,12($29);"                \
   56         "sw $6,16($29);"                \
   57         "sw $7,20($29);"                \
   58         "sw $1,0($29);"                 \
   59         "sw $31,4($29);"                \
   60         "move $5,$31;"                  \
   61         "jal ___mcount;"                \
   62         "move $4,$1;"                   \
   63         "lw $4,8($29);"                 \
   64         "lw $5,12($29);"                \
   65         "lw $6,16($29);"                \
   66         "lw $7,20($29);"                \
   67         "lw $31,4($29);"                \
   68         "lw $1,0($29);"                 \
   69         "addu $29,$29,8;"               \
   70         "j $31;"                        \
   71         "move $31,$1;"                  \
   72         ".set reorder;"                 \
   73         ".set at");
   74 
   75 #ifdef _KERNEL
   76 /*
   77  * The following two macros do splhigh and splx respectively.
   78  * They have to be defined this way because these are real
   79  * functions on the MIPS, and we do not want to invoke mcount
   80  * recursively.
   81  */
   82 
   83 #define MCOUNT_DECL(s)  u_long s;
   84 #ifdef SMP
   85 extern int      mcount_lock;
   86 #define MCOUNT_ENTER(s) {                                       \
   87         s = intr_disable();                                     \
   88         while (!atomic_cmpset_acq_int(&mcount_lock, 0, 1))      \
   89                 /* nothing */ ;                                 \
   90 }
   91 #define MCOUNT_EXIT(s)  {                                       \
   92         atomic_store_rel_int(&mcount_lock, 0);                  \
   93         intr_restore(s);                                                \
   94 }
   95 #else
   96 #define MCOUNT_ENTER(s) { s = intr_disable(); }
   97 #define MCOUNT_EXIT(s)  (intr_restore(s))
   98 #endif
   99 
  100 /* REVISIT for mips */
  101 /*
  102  * Config generates something to tell the compiler to align functions on 16
  103  * byte boundaries.  A strict alignment is good for keeping the tables small.
  104  */
  105 #define FUNCTION_ALIGNMENT      16
  106 
  107 #ifdef GUPROF
  108 struct gmonparam;
  109 void    stopguprof __P((struct gmonparam *p));
  110 #else
  111 #define stopguprof(p)
  112 #endif /* GUPROF */
  113 
  114 #else   /* !_KERNEL */
  115 
  116 #define FUNCTION_ALIGNMENT      4
  117 
  118 #ifdef __mips_n64
  119 typedef u_long  uintfptr_t;
  120 #else
  121 typedef u_int   uintfptr_t;
  122 #endif
  123 
  124 #endif /* _KERNEL */
  125 
  126 /*
  127  * An unsigned integral type that can hold non-negative difference between
  128  * function pointers.
  129  */
  130 #ifdef __mips_n64
  131 typedef u_long  fptrdiff_t;
  132 #else
  133 typedef u_int   fptrdiff_t;
  134 #endif
  135 
  136 #ifdef _KERNEL
  137 
  138 void    mcount(uintfptr_t frompc, uintfptr_t selfpc);
  139 
  140 #ifdef GUPROF
  141 struct gmonparam;
  142 
  143 void    nullfunc_loop_profiled(void);
  144 void    nullfunc_profiled(void);
  145 void    startguprof(struct gmonparam *p);
  146 void    stopguprof(struct gmonparam *p);
  147 #else
  148 #define startguprof(p)
  149 #define stopguprof(p)
  150 #endif /* GUPROF */
  151 
  152 #else /* !_KERNEL */
  153 
  154 #include <sys/cdefs.h>
  155 
  156 __BEGIN_DECLS
  157 #ifdef __GNUC__
  158 #ifdef __ELF__
  159 void    mcount(void) __asm(".mcount");
  160 #else
  161 void    mcount(void) __asm("mcount");
  162 #endif
  163 #endif
  164 void    _mcount(uintfptr_t frompc, uintfptr_t selfpc);
  165 __END_DECLS
  166 
  167 #endif /* _KERNEL */
  168 
  169 #ifdef GUPROF
  170 /* XXX doesn't quite work outside kernel yet. */
  171 extern int      cputime_bias;
  172 
  173 __BEGIN_DECLS
  174 int     cputime(void);
  175 void    empty_loop(void);
  176 void    mexitcount(uintfptr_t selfpc);
  177 void    nullfunc(void);
  178 void    nullfunc_loop(void);
  179 __END_DECLS
  180 #endif
  181 
  182 #endif /* !_MACHINE_PROFILE_H_ */

Cache object: 3e3bdcc76b300ac209cf8a33e13bf7aa


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