137 lines
4.5 KiB
C
137 lines
4.5 KiB
C
/*-
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* Copyright (c) 1991, 2001 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)gmon.h 5.2 (Berkeley) 5/6/91
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*/
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#ifndef gmon_h
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#define gmon_h
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struct raw_phdr
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{
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/* FIXME: Checking a host compiler define means that we can't use
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a cross gprof to the alpha. */
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char low_pc[GMON_PTR_SIZE]; /* base pc address of sample buffer */
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char high_pc[GMON_PTR_SIZE];/* max pc address of sampled buffer */
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char ncnt[4]; /* size of sample buffer (plus this header) */
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char version[4]; /* version number */
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char profrate[4]; /* profiling clock rate */
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char spare[3*4]; /* reserved */
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};
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#define GMONVERSION 0x00051879
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struct old_raw_phdr
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{
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char low_pc[GMON_PTR_SIZE]; /* base pc address of sample buffer */
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char high_pc[GMON_PTR_SIZE];/* max pc address of sampled buffer */
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char ncnt[4]; /* size of sample buffer (plus this header) */
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/* FIXME: Checking host compiler defines here means that we can't
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use a cross gprof alpha OSF. */
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#if defined (__alpha__) && defined (__osf__)
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/*
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* DEC's OSF v3.0 uses 4 bytes of padding to bring the header to
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* a size that is a multiple of 8.
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*/
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char pad[4];
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#endif
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};
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/*
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* Histogram counters are unsigned shorts:
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*/
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#define HISTCOUNTER unsigned short
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/*
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* Fraction of text space to allocate for histogram counters here, 1/2:
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*/
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#define HISTFRACTION 2
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/*
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* Fraction of text space to allocate for from hash buckets. The
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* value of HASHFRACTION is based on the minimum number of bytes of
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* separation between two subroutine call points in the object code.
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* Given MIN_SUBR_SEPARATION bytes of separation the value of
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* HASHFRACTION is calculated as:
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*
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* HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
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*
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* For the VAX, the shortest two call sequence is:
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*
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* calls $0,(r0)
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* calls $0,(r0)
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*
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* which is separated by only three bytes, thus HASHFRACTION is
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* calculated as:
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*
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* HASHFRACTION = 3 / (2 * 2 - 1) = 1
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*
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* Note that the division above rounds down, thus if MIN_SUBR_FRACTION
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* is less than three, this algorithm will not work!
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*/
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#define HASHFRACTION 1
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/*
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* Percent of text space to allocate for tostructs with a minimum:
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*/
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#define ARCDENSITY 2
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#define MINARCS 50
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struct tostruct
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{
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char *selfpc;
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int count;
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unsigned short link;
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};
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/*
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* A raw arc, with pointers to the calling site and the called site
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* and a count. Everything is defined in terms of characters so
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* as to get a packed representation (otherwise, different compilers
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* might introduce different padding):
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*/
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struct raw_arc
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{
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char from_pc[GMON_PTR_SIZE];
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char self_pc[GMON_PTR_SIZE];
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char count[4];
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};
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/*
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* General rounding functions:
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*/
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#define ROUNDDOWN(x,y) (((x)/(y))*(y))
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#define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
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#endif /* gmon_h */
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