sys/mips/include/profile.h

   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_ */