vhdl: supports VHPIDIRECT in mcode backend.

src: add hash.ad[sb], interning.ad[sb]
Automatically link with vhpidirect libraries.

1 files changed, 30 insertions, 0 deletions

diff --git a/src/hash.adb b/src/hash.adb
new file mode 100644
index 000000000..194a378dd
--- /dev/null
+++ b/src/hash.adb
@@ -0,0 +1,30 @@
+--  Hash.
+--  Copyright (C) 2019 Tristan Gingold
+--
+--  GHDL 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 2, or (at your option) any later
+--  version.
+--
+--  GHDL 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 GHDL; see the file COPYING.  If not, write to the Free
+--  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+--  02111-1307, USA.
+
+package body Hash is
+   function String_Hash (Key : String) return Hash_Value_Type
+   is
+      Res : Hash_Value_Type;
+   begin
+      Res := 0;
+      for I in Key'Range loop
+         Res := Res * 5 + Character'Pos (Key (I));
+      end loop;
+      return Res;
+   end String_Hash;
+end Hash;