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- /*-
- * Copyright (c) 1982, 1986 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- *
- * @(#)gprof.h 7.2 (Berkeley) 2/15/91
- */
-
- struct phdr {
- char *lpc;
- char *hpc;
- int ncnt;
- };
-
- /*
- * histogram counters are unsigned shorts (according to the kernel).
- */
- #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!
- *
- * NB: for the kernel we assert that the shortest two call sequence is:
- *
- * calls $0,_name
- * calls $0,_name
- *
- * which is separated by seven bytes, thus HASHFRACTION is calculated as:
- *
- * HASHFRACTION = 7 / (2 * 2 - 1) = 2
- */
- #define HASHFRACTION 2
-
- /*
- * percent of text space to allocate for tostructs
- * with a minimum.
- */
- #define ARCDENSITY 2
- #define MINARCS 50
-
- struct tostruct {
- char *selfpc;
- long count;
- unsigned short link;
- };
-
- /*
- * a raw arc,
- * with pointers to the calling site and the called site
- * and a count.
- */
- struct rawarc {
- unsigned long raw_frompc;
- unsigned long raw_selfpc;
- long raw_count;
- };
-
- /*
- * general rounding functions.
- */
- #define ROUNDDOWN(x,y) (((x)/(y))*(y))
- #define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
-