[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/debug/backtracesymsfd.c b/ap/libc/glibc/glibc-2.23/debug/backtracesymsfd.c
new file mode 100644
index 0000000..9c58f80
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/debug/backtracesymsfd.c
@@ -0,0 +1,122 @@
+/* Write formatted list with names for addresses in backtrace to a file.
+ Copyright (C) 1998-2016 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <execinfo.h>
+#include <string.h>
+#include <sys/uio.h>
+
+#include <_itoa.h>
+#include <ldsodefs.h>
+
+#if __ELF_NATIVE_CLASS == 32
+# define WORD_WIDTH 8
+#else
+/* We assume 64bits. */
+# define WORD_WIDTH 16
+#endif
+
+
+void
+__backtrace_symbols_fd (void *const *array, int size, int fd)
+{
+ struct iovec iov[9];
+ int cnt;
+
+ for (cnt = 0; cnt < size; ++cnt)
+ {
+ char buf[WORD_WIDTH];
+ char buf2[WORD_WIDTH];
+ Dl_info info;
+ struct link_map *map;
+ size_t last = 0;
+
+ if (_dl_addr (array[cnt], &info, &map, NULL)
+ && info.dli_fname != NULL && 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;
+
+ if (info.dli_sname != NULL || map->l_addr != 0)
+ {
+ size_t diff;
+
+ iov[last].iov_base = (void *) "(";
+ iov[last].iov_len = 1;
+ ++last;
+
+ if (info.dli_sname != NULL)
+ {
+ /* We have a symbol name. */
+ iov[last].iov_base = (void *) info.dli_sname;
+ iov[last].iov_len = strlen (info.dli_sname);
+ ++last;
+ }
+ else
+ /* We have no symbol, so describe it as relative to the file.
+ The load bias is more useful to the user than the load
+ address. The use of these addresses is to calculate an
+ address in the ELF file, so its prelinked bias is not
+ something we want to subtract out. */
+ info.dli_saddr = (void *) map->l_addr;
+
+ if (array[cnt] >= (void *) info.dli_saddr)
+ {
+ iov[last].iov_base = (void *) "+0x";
+ diff = array[cnt] - info.dli_saddr;
+ }
+ else
+ {
+ iov[last].iov_base = (void *) "-0x";
+ diff = info.dli_saddr - array[cnt];
+ }
+ iov[last].iov_len = 3;
+ ++last;
+
+ iov[last].iov_base = _itoa_word ((unsigned long int) diff,
+ &buf2[WORD_WIDTH], 16, 0);
+ iov[last].iov_len = (&buf2[WORD_WIDTH]
+ - (char *) iov[last].iov_base);
+ ++last;
+
+ iov[last].iov_base = (void *) ")";
+ iov[last].iov_len = 1;
+ ++last;
+ }
+ }
+
+ 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)
+libc_hidden_def (__backtrace_symbols_fd)