1 files changed, 64 insertions, 0 deletions
diff --git a/debug/backtracesymsfd.c b/debug/backtracesymsfd.c
new file mode 100644
index 0000000000..b01f8b0094
--- /dev/null
+++ b/debug/backtracesymsfd.c
@@ -0,0 +1,64 @@
+/* Write formatted list with names for addresses in backtrace to a file.
+   Copyright (C) 1998, 2003, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   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.  */
+
+#include <execinfo.h>
+#include <string.h>
+#include <sys/uio.h>
+
+#include <stdio-common/_itoa.h>
+#include <not-cancel.h>
+
+#if __ELF_NATIVE_CLASS == 32
+# define WORD_WIDTH 8
+#else
+/* We assume 64bits.  */
+# define WORD_WIDTH 16
+#endif
+
+
+void
+__backtrace_symbols_fd (array, size, fd)
+     void *const *array;
+     int size;
+     int fd;
+{
+  struct iovec iov[3];
+  int cnt;
+
+  for (cnt = 0; cnt < size; ++cnt)
+    {
+      char buf[WORD_WIDTH];
+
+      iov[0].iov_base = (void *) "[0x";
+      iov[0].iov_len = 3;
+
+      iov[1].iov_base = _itoa_word ((unsigned long int) array[cnt],
+				    &buf[WORD_WIDTH], 16, 0);
+      iov[1].iov_len = &buf[WORD_WIDTH] - (char *) iov[1].iov_base;
+
+      iov[2].iov_base = (void *) "]\n";
+      iov[2].iov_len = 2;
+
+      /* We prefer to use the non-cancelable interface if it is available.  */
+      writev_not_cancel_no_status (fd, iov, 3);
+    }
+}
+weak_alias (__backtrace_symbols_fd, backtrace_symbols_fd)
+libc_hidden_def (__backtrace_symbols_fd)