libbacktrace/:
* Initial implementation.
./:
* MAINTAINERS (Various Maintainers): Add libbacktrace.
* configure.ac (host_libs): Add libbacktrace.
(target_libraries): Add libbacktrace.
* Makefile.def (host_modules): Add libbacktrace.
(target_modules): Likewise.
* configure, Makefile.in: Rebuild.
gcc/go:
* config-lang.in (target_libs): Add target-libbacktrace.
From-SVN: r191397
diff --git a/libbacktrace/print.c b/libbacktrace/print.c
new file mode 100644
index 0000000..2d9d76a
--- /dev/null
+++ b/libbacktrace/print.c
@@ -0,0 +1,94 @@
+/* print.c -- Print the current backtrace.
+ Copyright (C) 2012 Free Software Foundation, Inc.
+ Written by Ian Lance Taylor, Google.
+
+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) The name of the author may not be used to
+ endorse or promote products derived from this software without
+ specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* Passed to callbacks. */
+
+struct print_data
+{
+ struct backtrace_state *state;
+ FILE *f;
+};
+
+/* Print one level of a backtrace. */
+
+static int
+print_callback (void *data, uintptr_t pc, const char *filename, int lineno,
+ const char *function)
+{
+ struct print_data *pdata = (struct print_data *) data;
+
+ fprintf (pdata->f, "0x%lx %s\n\t%s:%d\n",
+ (unsigned long) pc,
+ function == NULL ? "???" : function,
+ filename == NULL ? "???" : filename,
+ lineno);
+ return 0;
+}
+
+/* Print errors to stderr. */
+
+static void
+error_callback (void *data, const char *msg, int errnum)
+{
+ struct print_data *pdata = (struct print_data *) data;
+ const char *name;
+
+ name = pdata->state->filename;
+ if (name == NULL)
+ name = "/proc/self/exe";
+ fprintf (stderr, "%s: libbacktrace: %s", name, msg);
+ if (errnum > 0)
+ fprintf (stderr, ": %s", strerror (errnum));
+ fputc ('\n', stderr);
+}
+
+/* Print a backtrace. */
+
+void
+backtrace_print (struct backtrace_state *state, int skip, FILE *f)
+{
+ struct print_data data;
+
+ data.state = state;
+ data.f = f;
+ backtrace_full (state, skip + 1, print_callback, error_callback,
+ (void *) &data);
+}