1 files changed, 116 insertions, 0 deletions
diff --git a/bin/gdb-add-index b/bin/gdb-add-index
new file mode 100755
index 0000000..efaad1d
--- /dev/null
+++ b/bin/gdb-add-index
@@ -0,0 +1,116 @@
+#! /bin/sh
+
+# Add a .gdb_index section to a file.
+
+# Copyright (C) 2010-2019 Free Software Foundation, Inc.
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# This program assumes gdb and objcopy are in $PATH.
+# If not, or you want others, pass the following in the environment
+GDB=${GDB:=gdb}
+OBJCOPY=${OBJCOPY:=objcopy}
+
+myname="${0##*/}"
+
+dwarf5=""
+if [ "$1" = "-dwarf-5" ]; then
+    dwarf5="$1"
+    shift
+fi
+
+if test $# != 1; then
+    echo "usage: $myname [-dwarf-5] FILE" 1>&2
+    exit 1
+fi
+
+file="$1"
+
+if test ! -r "$file"; then
+    echo "$myname: unable to access: $file" 1>&2
+    exit 1
+fi
+
+dir="${file%/*}"
+test "$dir" = "$file" && dir="."
+index4="${file}.gdb-index"
+index5="${file}.debug_names"
+debugstr="${file}.debug_str"
+debugstrmerge="${file}.debug_str.merge"
+debugstrerr="${file}.debug_str.err"
+
+rm -f $index4 $index5 $debugstr $debugstrmerge $debugstrerr
+# Ensure intermediate index file is removed when we exit.
+trap "rm -f $index4 $index5 $debugstr $debugstrmerge $debugstrerr" 0
+
+$GDB --batch -nx -iex 'set auto-load no' \
+    -ex "file $file" -ex "save gdb-index $dwarf5 $dir" || {
+    # Just in case.
+    status=$?
+    echo "$myname: gdb error generating index for $file" 1>&2
+    exit $status
+}
+
+# In some situations gdb can exit without creating an index.  This is
+# not an error.
+# E.g., if $file is stripped.  This behaviour is akin to stripping an
+# already stripped binary, it's a no-op.
+status=0
+
+if test -f "$index4" -a -f "$index5"; then
+    echo "$myname: Both index types were created for $file" 1>&2
+    status=1
+elif test -f "$index4" -o -f "$index5"; then
+    if test -f "$index4"; then
+	index="$index4"
+	section=".gdb_index"
+    else
+	index="$index5"
+	section=".debug_names"
+    fi
+    debugstradd=false
+    debugstrupdate=false
+    if test -s "$debugstr"; then
+	if ! $OBJCOPY --dump-section .debug_str="$debugstrmerge" "$file" /dev/null \
+		 2>$debugstrerr; then
+	    cat >&2 $debugstrerr
+	    exit 1
+	fi
+	if grep -q "can't dump section '.debug_str' - it does not exist" \
+		  $debugstrerr; then
+	    debugstradd=true
+	else
+	    debugstrupdate=true
+	    cat >&2 $debugstrerr
+	fi
+	cat "$debugstr" >>"$debugstrmerge"
+    fi
+
+    $OBJCOPY --add-section $section="$index" \
+	--set-section-flags $section=readonly \
+	$(if $debugstradd; then \
+	      echo --add-section .debug_str="$debugstrmerge"; \
+	      echo --set-section-flags .debug_str=readonly; \
+	  fi; \
+	  if $debugstrupdate; then \
+	      echo --update-section .debug_str="$debugstrmerge"; \
+	  fi) \
+	"$file" "$file"
+
+    status=$?
+else
+    echo "$myname: No index was created for $file" 1>&2
+    echo "$myname: [Was there no debuginfo? Was there already an index?]" 1>&2
+fi
+
+exit $status