Initial effort at adding profiling support.

1 files changed, 80 insertions, 0 deletions

diff --git a/include/sys/gmon_out.h b/include/sys/gmon_out.h
new file mode 100644
index 000000000..6fa09e864
--- /dev/null
+++ b/include/sys/gmon_out.h
@@ -0,0 +1,80 @@
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David Mosberger <davidm@cs.arizona.edu>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/* This file specifies the format of gmon.out files.  It should have
+   as few external dependencies as possible as it is going to be included
+   in many different programs.  That is, minimize the number of #include's.
+
+   A gmon.out file consists of a header (defined by gmon_hdr) followed by
+   a sequence of records.  Each record starts with a one-byte tag
+   identifying the type of records, followed by records specific data. */
+
+#ifndef _SYS_GMON_OUT_H
+#define _SYS_GMON_OUT_H	1
+
+#include <features.h>
+
+#define	GMON_MAGIC	"gmon"	/* magic cookie */
+#define GMON_VERSION	1	/* version number */
+
+/* For profiling shared object we need a new format.  */
+#define GMON_SHOBJ_VERSION	0x1ffff
+
+__BEGIN_DECLS
+
+/*
+ * Raw header as it appears on file (without padding).  This header
+ * always comes first in gmon.out and is then followed by a series
+ * records defined below.
+ */
+struct gmon_hdr
+  {
+    char cookie[4];
+    char version[4];
+    char spare[3 * 4];
+  };
+
+/* types of records in this file: */
+typedef enum
+  {
+    GMON_TAG_TIME_HIST = 0,
+    GMON_TAG_CG_ARC = 1,
+    GMON_TAG_BB_COUNT = 2
+  } GMON_Record_Tag;
+
+struct gmon_hist_hdr
+  {
+    char low_pc[sizeof (char *)];	/* base pc address of sample buffer */
+    char high_pc[sizeof (char *)];	/* max pc address of sampled buffer */
+    char hist_size[4];			/* size of sample buffer */
+    char prof_rate[4];			/* profiling clock rate */
+    char dimen[15];			/* phys. dim., usually "seconds" */
+    char dimen_abbrev;			/* usually 's' for "seconds" */
+  };
+
+struct gmon_cg_arc_record
+  {
+    char from_pc[sizeof (char *)];	/* address within caller's body */
+    char self_pc[sizeof (char *)];	/* address within callee's body */
+    char count[4];			/* number of arc traversals */
+  };
+
+__END_DECLS
+
+#endif /* sys/gmon_out.h */