1 files changed, 103 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/mkmap-flat.awk b/gcc-4.9/libgcc/mkmap-flat.awk
new file mode 100644
index 000000000..f2d79c2f2
--- /dev/null
+++ b/gcc-4.9/libgcc/mkmap-flat.awk
@@ -0,0 +1,103 @@
+# Generate a flat list of symbols to export.
+#	Copyright (C) 2007-2014 Free Software Foundation, Inc.
+#	Contributed by Richard Henderson <rth@cygnus.com>
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation; either version 3, or (at your option) any later
+# version.
+#
+# GCC 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 General Public
+# License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# Options:
+#   "-v leading_underscore=1" : Symbols in map need leading underscore.
+#   "-v pe_dll=1"             : Create .DEF file for Windows PECOFF
+#                               DLL link instead of map file.
+
+BEGIN {
+  state = "nm";
+  excluding = 0;
+  if (leading_underscore)
+    prefix = "_";
+  else
+    prefix = "";
+}
+
+# Remove comment and blank lines.
+/^ *#/ || /^ *$/ {
+  next;
+}
+
+# We begin with nm input.  Collect the set of symbols that are present
+# so that we can elide undefined symbols.
+
+state == "nm" && /^%%/ {
+  state = "ver";
+  next;
+}
+
+state == "nm" && ($1 == "U" || $2 == "U") {
+  next;
+}
+
+state == "nm" && NF == 3 {
+  def[$3] = 1;
+  next;
+}
+
+state == "nm" {
+  next;
+}
+
+# Now we process a simplified variant of the Solaris symbol version
+# script.  We have one symbol per line, no semicolons, simple markers
+# for beginning and ending each section, and %inherit markers for
+# describing version inheritance.  A symbol may appear in more than
+# one symbol version, and the last seen takes effect.
+# The magic version name '%exclude' causes all the symbols given that
+# version to be dropped from the output (unless a later version overrides).
+
+NF == 3 && $1 == "%inherit" {
+  next;
+}
+
+NF == 2 && $2 == "{" {
+  if ($1 == "%exclude")
+    excluding = 1;
+  next;
+}
+
+$1 == "}" {
+  excluding = 0;
+  next;
+}
+
+{
+  sym = prefix $1;
+  if (excluding)
+    delete export[sym];
+  else
+    export[sym] = 1;
+  next;
+}
+
+END {
+
+  if (pe_dll) {
+    print "LIBRARY " pe_dll;
+    print "EXPORTS";
+  }
+
+  for (sym in export)
+    if (def[sym] || (pe_dll && def["_" sym]))
+      print sym;
+}