Change regcache list to be an hash map

[deliverable/binutils-gdb.git] / gas / remap.c

diff --git a/gas/remap.c b/gas/remap.c
index b334b2c6e2d7bf523f9538d65975517929bdd4d0..78b42e799da0ac939bdeb472d16f7ebdeb2c1893 100644 (file)
--- a/gas/remap.c
+++ b/gas/remap.c
@@ -1,5 +1,5 @@
 /* Remap file names for debug info for GNU assembler.
-   Copyright 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2019 Free Software Foundation, Inc.
 
    This file is part of GAS, the GNU Assembler.
 
@@ -19,6 +19,7 @@
    02110-1301, USA.  */
 
 #include "as.h"
+#include "filenames.h"
 
 /* Structure recording the mapping from source file and directory
    names at compile time to those to be embedded in debug
@@ -52,7 +53,7 @@ add_debug_prefix_map (const char *arg)
       as_fatal (_("invalid argument '%s' to -fdebug-prefix-map"), arg);
       return;
     }
-  map = (struct debug_prefix_map *) xmalloc (sizeof (debug_prefix_map));
+  map = XNEW (debug_prefix_map);
   o = xstrdup (arg);
   map->old_prefix = o;
   map->old_len = p - arg;
@@ -64,26 +65,21 @@ add_debug_prefix_map (const char *arg)
   debug_prefix_maps = map;
 }
 
-/* Perform user-specified mapping of debug filename prefixes.  Return
-   the new name corresponding to FILENAME.  */
+/* Perform user-specified mapping of debug filename prefixes.  Returns
+   a newly allocated buffer containing the name corresponding to FILENAME.
+   It is the caller's responsibility to free the buffer.  */
 
 const char *
 remap_debug_filename (const char *filename)
 {
   debug_prefix_map *map;
-  char *s;
-  const char *name;
-  size_t name_len;
 
   for (map = debug_prefix_maps; map; map = map->next)
-    if (strncmp (filename, map->old_prefix, map->old_len) == 0)
-      break;
-  if (!map)
-    return filename;
-  name = filename + map->old_len;
-  name_len = strlen (name) + 1;
-  s = (char *) alloca (name_len + map->new_len);
-  memcpy (s, map->new_prefix, map->new_len);
-  memcpy (s + map->new_len, name, name_len);
-  return xstrdup (s);
+    if (filename_ncmp (filename, map->old_prefix, map->old_len) == 0)
+      {
+       const char *name = filename + map->old_len;
+       return concat (map->new_prefix, name, NULL);
+      }
+       
+  return xstrdup (filename);
 }