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/*

 * Copyright (c) 1983, 1991, 1993, 2001

 *      The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

#ifndef gmon_h

#define gmon_h

/* Size of the 4.4BSD gmon header */

#define GMON_HDRSIZE_BSD44_32 (4 + 4 + 4 + 4 + 4 + (3 * 4))

#define GMON_HDRSIZE_BSD44_64 (8 + 8 + 4 + 4 + 4 + (3 * 4))

/* *INDENT-OFF* */

/* For documentation purposes only.

   struct raw_phdr

    {

      char low_pc[sizeof(void *)];   -- base pc address of sample buffer

      char high_pc[sizeof(void *)];  -- max pc address of sampled buffer

      char ncnt[4];                  -- size of sample buffer (plus this

                                        header)

      char version[4];               -- version number

      char profrate[4];              -- profiling clock rate

      char spare[3*4];               -- reserved

    };

*/

/* *INDENT-ON* */

#define GMONVERSION     0x00051879

/* Size of the old BSD gmon header */

#define GMON_HDRSIZE_OLDBSD_32 (4 + 4 + 4) 

/* FIXME: Checking host compiler defines here means that we can't

   use a cross gprof alpha OSF.  */

#if defined(__alpha__) && defined (__osf__) 

#define GMON_HDRSIZE_OLDBSD_64 (8 + 8 + 4 + 4)

#else

#define GMON_HDRSIZE_OLDBSD_64 (8 + 8 + 4)

#endif

/* *INDENT-OFF* */

/* For documentation purposes only.

  struct old_raw_phdr

    {

      char low_pc[sizeof(void *)];  -- base pc address of sample buffer

      char high_pc[sizeof(void *)]  -- max pc address of sampled buffer

      char ncnt[4];                 -- size of sample buffer (plus this

                                       header)

      if defined (__alpha__) && defined (__osf__)

      char pad[4];                  -- DEC's OSF v3.0 uses 4 bytes of padding

                                    -- to bring the header to a size that is a

                                    -- multiple of 8.

      endif

    };

*/

/* *INDENT-ON* */

/*

 * Histogram counters are unsigned shorts:

 */

#define HISTCOUNTER unsigned short

/*

 * Fraction of text space to allocate for histogram counters here, 1/2:

 */

#define HISTFRACTION    2

/*

 * Fraction of text space to allocate for from hash buckets.  The

 * value of HASHFRACTION is based on the minimum number of bytes of

 * separation between two subroutine call points in the object code.

 * Given MIN_SUBR_SEPARATION bytes of separation the value of

 * HASHFRACTION is calculated as:

 *

 *      HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);

 *

 * For the VAX, the shortest two call sequence is:

 *

 *      calls   $0,(r0)

 *      calls   $0,(r0)

 *

 * which is separated by only three bytes, thus HASHFRACTION is

 * calculated as:

 *

 *      HASHFRACTION = 3 / (2 * 2 - 1) = 1

 *

 * Note that the division above rounds down, thus if MIN_SUBR_FRACTION

 * is less than three, this algorithm will not work!

 */

#define HASHFRACTION 1

/*

 * Percent of text space to allocate for tostructs with a minimum:

 */

#define ARCDENSITY      2

#define MINARCS         50

struct tostruct

  {

    char *selfpc;

    int count;

    unsigned short link;

  };

/*

 * A raw arc, with pointers to the calling site and the called site

 * and a count.  Everything is defined in terms of characters so

 * as to get a packed representation (otherwise, different compilers

 * might introduce different padding):

 */

/* *INDENT-OFF* */

/* For documentation purposes only.

  struct raw_arc

    {

      char from_pc[sizeof(void *)];

      char self_pc[sizeof(void *)];

      char count[sizeof(long)];

    };

*/

/* *INDENT-ON* */

/*

 * General rounding functions:

 */

#define ROUNDDOWN(x,y)  (((x)/(y))*(y))

#define ROUNDUP(x,y)    ((((x)+(y)-1)/(y))*(y))

#endif /* gmon_h */