Copy profiling code from MCUOnEclipse.

1 files changed, 177 insertions, 0 deletions

diff --git a/libraries/libprof/gmon.h b/libraries/libprof/gmon.h
new file mode 100644
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+/*	$OpenBSD: gmon.h,v 1.3 1996/04/21 22:31:46 deraadt Exp $	*/
+/*	$NetBSD: gmon.h,v 1.5 1996/04/09 20:55:30 cgd Exp $	*/
+
+/*-
+ * Copyright (c) 1982, 1986, 1992, 1993
+ *	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.
+ * 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	8.2 (Berkeley) 1/4/94
+ */
+
+/*
+ * This file is taken from Cygwin distribution. Please keep it in sync.
+ * The differences should be within __MINGW32__ guard.
+ */
+
+#ifndef _SYS_GMON_H_
+#define _SYS_GMON_H_
+
+#ifndef __P
+#define __P(x) x
+#endif
+
+/* On POSIX systems, profile.h is a KRB5 header.  To avoid collisions, just
+   pull in profile.h's content here.  The profile.h header won't be provided
+   by Mingw-w64 anymore at one point. */
+#if 0
+#include <profile.h>
+#else
+#ifndef _WIN64
+#define _MCOUNT_CALL __attribute__ ((regparm (2)))
+extern void _mcount(void);
+#else
+#define _MCOUNT_CALL
+extern void mcount(void);
+#endif
+#define _MCOUNT_DECL __attribute__((gnu_inline)) __inline__ \
+   void _MCOUNT_CALL _mcount_private
+#define MCOUNT
+#endif
+
+/*
+ * Structure prepended to gmon.out profiling data file.
+ */
+struct gmonhdr {
+	size_t	lpc;		/* base pc address of sample buffer */
+	size_t	hpc;		/* max pc address of sampled buffer */
+	int	ncnt;		    /* size of sample buffer (plus this header) */
+	int	version;	  /* version number */
+	int	profrate;	  /* profiling clock rate */
+	int	spare[3];	  /* reserved */
+};
+#define GMONVERSION	0x00051879
+
+/*
+ * 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 example, on 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!
+ *
+ * In practice, however, call instructions are rarely at a minimal
+ * distance.  Hence, we will define HASHFRACTION to be 2 across all
+ * architectures.  This saves a reasonable amount of space for
+ * profiling data structures without (in practice) sacrificing
+ * any granularity.
+ */
+#define	HASHFRACTION	2
+
+/*
+ * percent of text space to allocate for tostructs with a minimum.
+ */
+#define ARCDENSITY	2 /* this is in percentage, relative to text size! */
+#define MINARCS		 50
+#define MAXARCS		 ((1 << (8 * sizeof(HISTCOUNTER))) - 2)
+
+struct tostruct {
+	size_t	selfpc; /* callee address/program counter. The caller address is in froms[] array which points to tos[] array */
+	long	count;    /* how many times it has been called */
+	u_short	link;   /* link to next entry in hash table. For tos[0] this points to the last used entry */
+	u_short pad;    /* additional padding bytes, to have entries 4byte aligned */
+};
+
+/*
+ * a raw arc, with pointers to the calling site and
+ * the called site and a count.
+ */
+struct rawarc {
+	size_t	raw_frompc;
+	size_t	raw_selfpc;
+	long	raw_count;
+};
+
+/*
+ * general rounding functions.
+ */
+#define ROUNDDOWN(x,y)	(((x)/(y))*(y))
+#define ROUNDUP(x,y)	  ((((x)+(y)-1)/(y))*(y))
+
+/*
+ * The profiling data structures are housed in this structure.
+ */
+struct gmonparam {
+	int		state;
+	u_short		*kcount;    /* histogram PC sample array */
+	size_t		kcountsize; /* size of kcount[] array in bytes */
+	u_short		*froms;     /* array of hashed 'from' addresses. The 16bit value is an index into the tos[] array */
+	size_t		fromssize;  /* size of froms[] array in bytes */
+	struct tostruct	*tos; /* to struct, contains histogram counter */
+	size_t		tossize;    /* size of tos[] array in bytes */
+	long		  tolimit;
+	size_t		lowpc;      /* low program counter of area */
+	size_t		highpc;     /* high program counter */
+	size_t		textsize;   /* code size */
+};
+extern struct gmonparam _gmonparam;
+
+/*
+ * Possible states of profiling.
+ */
+#define	GMON_PROF_ON	  0
+#define	GMON_PROF_BUSY	1
+#define	GMON_PROF_ERROR	2
+#define	GMON_PROF_OFF	  3
+
+void _mcleanup(void); /* routine to be called to write gmon.out file */
+void _monInit(void); /* initialization routine */
+
+#endif /* !_SYS_GMONH_ */