1 files changed, 109 insertions, 0 deletions
diff --git a/sysdeps/generic/elf/backtracesymsfd.c b/sysdeps/generic/elf/backtracesymsfd.c
new file mode 100644
index 0000000000..b67b64529e
--- /dev/null
+++ b/sysdeps/generic/elf/backtracesymsfd.c
@@ -0,0 +1,109 @@
+/* Write formatted list with names for addresses in backtrace to a file.
+   Copyright (C) 1998 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 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.  */
+
+#include <execinfo.h>
+#include <string.h>
+#include <sys/uio.h>
+
+#include <stdio-common/_itoa.h>
+#include <elf/ldsodefs.h>
+
+#if __ELF_NATIVE_CLASS == 32
+# define WORD_WIDTH 8
+#else
+/* We assyme 64bits.  */
+# define WORD_WIDTH 16
+#endif
+
+
+void
+__backtrace_symbols_fd (array, size, fd)
+     void *const *array;
+     int size;
+     int fd;
+{
+  struct iovec iov[9];
+  int cnt;
+
+  for (cnt = 0; cnt < size; ++cnt)
+    {
+      char buf[WORD_WIDTH];
+      Dl_info info;
+      size_t last = 0;
+
+      if (_dl_addr (array[cnt], &info)
+	  && info.dli_fname && info.dli_fname[0] != '\0')
+	{
+	  /* Name of the file.  */
+	  iov[0].iov_base = (void *) info.dli_fname;
+	  iov[0].iov_len = strlen (info.dli_fname);
+	  last = 1;
+
+	  /* Symbol name.  */
+	  if (info.dli_sname != NULL)
+	    {
+	      char buf2[WORD_WIDTH];
+	      size_t diff;
+
+	      iov[1].iov_base = (void *) "(";
+	      iov[1].iov_len = 1;
+	      iov[2].iov_base = (void *) info.dli_sname;
+	      iov[2].iov_len = strlen (info.dli_sname);
+
+	      if (array[cnt] >= (void *) info.dli_saddr)
+		{
+		  iov[3].iov_base = (void *) "+0x";
+		  diff = array[cnt] - info.dli_saddr;
+		}
+	      else
+		{
+		  iov[3].iov_base = (void *) "-0x";
+		  diff = info.dli_saddr - array[cnt];
+		}
+	      iov[3].iov_len = 3;
+
+	      iov[4].iov_base = _itoa_word ((unsigned long int) diff,
+					    &buf2[WORD_WIDTH], 16, 0);
+	      iov[4].iov_len = &buf2[WORD_WIDTH] - (char *) iov[4].iov_base;
+
+	      iov[5].iov_base = (void *) ")";
+	      iov[5].iov_len = 1;
+
+	      last = 6;
+	    }
+	}
+
+      iov[last].iov_base = (void *) "[0x";
+      iov[last].iov_len = 3;
+      ++last;
+
+      iov[last].iov_base = _itoa_word ((unsigned long int) array[cnt],
+				       &buf[WORD_WIDTH], 16, 0);
+      iov[last].iov_len = &buf[WORD_WIDTH] - (char *) iov[last].iov_base;
+      ++last;
+
+      iov[last].iov_base = (void *) "]\n";
+      iov[last].iov_len = 2;
+      ++last;
+
+      __writev (fd, iov, last);
+    }
+}
+weak_alias (__backtrace_symbols_fd, backtrace_symbols_fd)