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authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
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+/*-
+ * Copyright (c) 1991 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.
+ *
+ * @(#)gmon.h 5.2 (Berkeley) 5/6/91
+ */
+#ifndef gmon_h
+#define gmon_h
+
+struct raw_phdr
+ {
+ /* FIXME: Checking a host compiler define means that we can't use
+ a cross gprof to the alpha. */
+#ifdef __alpha__
+ char low_pc[8]; /* base pc address of sample buffer */
+ char high_pc[8]; /* max pc address of sampled buffer */
+#else
+ char low_pc[4]; /* base pc address of sample buffer */
+ char high_pc[4]; /* max pc address of sampled buffer */
+#endif
+ 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 */
+ };
+
+#define GMONVERSION 0x00051879
+
+struct old_raw_phdr
+ {
+ /* FIXME: Checking a host compiler define means that we can't use
+ a cross gprof to the alpha. */
+#ifdef __alpha__
+ char low_pc[8]; /* base pc address of sample buffer */
+ char high_pc[8]; /* max pc address of sampled buffer */
+#else
+ char low_pc[4]; /* base pc address of sample buffer */
+ char high_pc[4]; /* max pc address of sampled buffer */
+#endif
+ char ncnt[4]; /* size of sample buffer (plus this header) */
+
+ /* FIXME: Checking host compiler defines here means that we can't
+ use a cross gprof alpha OSF. */
+#if defined (__alpha__) && defined (__osf__)
+ /*
+ * DEC's OSF v3.0 uses 4 bytes of padding to bring the header to
+ * a size that is a multiple of 8.
+ */
+ char pad[4];
+#endif
+ };
+
+/*
+ * 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):
+ */
+struct raw_arc
+ {
+ /* FIXME: Checking a host compiler define means that we can't use
+ a cross gprof to the alpha. */
+#ifdef __alpha__
+ char from_pc[8];
+ char self_pc[8];
+ char count[8];
+#else
+ char from_pc[4];
+ char self_pc[4];
+ char count[4];
+#endif
+ };
+
+/*
+ * General rounding functions:
+ */
+#define ROUNDDOWN(x,y) (((x)/(y))*(y))
+#define ROUNDUP(x,y) ((((x)+(y)-1)/(y))*(y))
+
+#endif /* gmon_h */