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-rw-r--r--debug/Makefile32
-rw-r--r--debug/backtrace-tst.c44
-rw-r--r--debug/execinfo.h39
3 files changed, 115 insertions, 0 deletions
diff --git a/debug/Makefile b/debug/Makefile
new file mode 100644
index 0000000..5286cc1
--- /dev/null
+++ b/debug/Makefile
@@ -0,0 +1,32 @@
+# Copyright (C) 1998 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Library General Public License as
+# published by the Free Software Foundation; either version 2 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
+# Library General Public License for more details.
+
+# You should have received a copy of the GNU Library General Public
+# License along with the GNU C Library; see the file COPYING.LIB. If not,
+# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+#
+# Sub-makefile for debug portion of the library.
+#
+subdir := debug
+
+headers := execinfo.h
+
+routines := backtrace backtracesyms
+
+CFLAGS-backtrace.c = -fno-omit-frame-pointer
+
+tests = backtrace-tst
+
+include ../Rules
diff --git a/debug/backtrace-tst.c b/debug/backtrace-tst.c
new file mode 100644
index 0000000..d899fb0
--- /dev/null
+++ b/debug/backtrace-tst.c
@@ -0,0 +1,44 @@
+#include <execinfo.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+static int
+compare (const void *p1, const void *p2)
+{
+ void *ba[20];
+ int n = backtrace (ba, sizeof (ba) / sizeof (ba[0]));
+ if (n != 0)
+ {
+ char **names = backtrace_symbols (ba, n);
+ if (names != NULL)
+ {
+ int i;
+ printf ("called from %s\n", names[0]);
+ for (i = 1; i < n; ++i)
+ printf (" %s\n", names[i]);
+ free (names);
+ }
+ }
+
+ return *(uint32_t *) p1 - *(uint32_t *) p2;
+}
+
+
+int
+main (int argc, char *argv[])
+{
+ uint32_t arr[20];
+ size_t cnt;
+
+ for (cnt = 0; cnt < sizeof (arr) / sizeof (arr[0]); ++cnt)
+ arr[cnt] = random ();
+
+ qsort (arr, sizeof (arr) / sizeof (arr[0]), sizeof (arr[0]), compare);
+
+ for (cnt = 0; cnt < sizeof (arr) / sizeof (arr[0]); ++cnt)
+ printf ("%" PRIx32 "\n", arr[cnt]);
+
+ return 0;
+}
diff --git a/debug/execinfo.h b/debug/execinfo.h
new file mode 100644
index 0000000..07bed92
--- /dev/null
+++ b/debug/execinfo.h
@@ -0,0 +1,39 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _EXECINFO_H
+#define _EXECINFO_H 1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* Store up to SIZE return address of the current program state in
+ ARRAY and return the exact number of values stored. */
+extern int __backtrace __P ((void **__array, int __size));
+extern int backtrace __P ((void **__array, int __size));
+
+
+/* Return names of functions from the backtrace list in ARRAY in a newly
+ malloc()ed memory block. */
+extern char **__backtrace_symbols __P ((__const void **__array, int __size));
+extern char **backtrace_symbols __P ((__const void **__array, int __size));
+
+__END_DECLS
+
+#endif /* execinfo.h */