sim: unify hardware settings

[deliverable/binutils-gdb.git] / gdb / contrib / gdb-add-index.sh

diff --git a/gdb/contrib/gdb-add-index.sh b/gdb/contrib/gdb-add-index.sh
index 5a37020656f399247c50c8fadbbe17d6e82bb53e..734110caa3b522d3455cf9876feef1c478b0ddbe 100755 (executable)
--- a/gdb/contrib/gdb-add-index.sh
+++ b/gdb/contrib/gdb-add-index.sh
@@ -2,7 +2,7 @@
 
 # Add a .gdb_index section to a file.
 
-# Copyright (C) 2010-2019 Free Software Foundation, Inc.
+# Copyright (C) 2010-2021 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
@@ -37,6 +37,34 @@ fi
 
 file="$1"
 
+if test -L "$file"; then
+    if ! command -v readlink >/dev/null 2>&1; then
+       echo "$myname: 'readlink' missing.  Failed to follow symlink $1." 1>&2
+       exit 1
+    fi
+
+    # Count number of links followed in order to detect loops.
+    count=0
+    while test -L "$file"; do
+       target=$(readlink "$file")
+
+       case "$target" in
+           /*)
+               file="$target"
+               ;;
+           *)
+               file="$(dirname "$file")/$target"
+               ;;
+       esac
+
+       count="$((count + 1))"
+       if test "$count" -gt 10; then
+           echo "$myname: Detected loop while following link $file"
+           exit 1
+       fi
+    done
+fi
+
 if test ! -r "$file"; then
     echo "$myname: unable to access: $file" 1>&2
     exit 1
@@ -60,13 +88,13 @@ fi
 
 set_files ()
 {
-    local file="$1"
+    fpath="$1"
 
-    index4="${file}.gdb-index"
-    index5="${file}.debug_names"
-    debugstr="${file}.debug_str"
-    debugstrmerge="${file}.debug_str.merge"
-    debugstrerr="${file}.debug_str.err"
+    index4="${fpath}.gdb-index"
+    index5="${fpath}.debug_names"
+    debugstr="${fpath}.debug_str"
+    debugstrmerge="${fpath}.debug_str.merge"
+    debugstrerr="${fpath}.debug_str.err"
 }
 
 tmp_files=
@@ -99,13 +127,12 @@ status=0
 
 handle_file ()
 {
-    local file
-    file="$1"
+    fpath="$1"
 
-    set_files "$file"
+    set_files "$fpath"
 
     if test -f "$index4" -a -f "$index5"; then
-       echo "$myname: Both index types were created for $file" 1>&2
+       echo "$myname: Both index types were created for $fpath" 1>&2
        status=1
     elif test -f "$index4" -o -f "$index5"; then
        if test -f "$index4"; then
@@ -118,7 +145,7 @@ handle_file ()
        debugstradd=false
        debugstrupdate=false
        if test -s "$debugstr"; then
-           if ! $OBJCOPY --dump-section .debug_str="$debugstrmerge" "$file" \
+           if ! $OBJCOPY --dump-section .debug_str="$debugstrmerge" "$fpath" \
                 /dev/null 2>$debugstrerr; then
                cat >&2 $debugstrerr
                exit 1
@@ -142,11 +169,11 @@ handle_file ()
                   if $debugstrupdate; then \
                       echo --update-section .debug_str="$debugstrmerge"; \
                   fi) \
-                "$file" "$file"
+                "$fpath" "$fpath"
 
        status=$?
     else
-       echo "$myname: No index was created for $file" 1>&2
+       echo "$myname: No index was created for $fpath" 1>&2
        echo "$myname: [Was there no debuginfo? Was there already an index?]" \
             1>&2
     fi