1 files changed, 64 insertions, 0 deletions
diff --git a/src/ghdldrv/foreigns.adb b/src/ghdldrv/foreigns.adb
new file mode 100644
index 000000000..15e3dd009
--- /dev/null
+++ b/src/ghdldrv/foreigns.adb
@@ -0,0 +1,64 @@
+with Interfaces.C; use Interfaces.C;
+
+package body Foreigns is
+   function Sin (Arg : double) return double;
+   pragma Import (C, Sin);
+
+   function Log (Arg : double) return double;
+   pragma Import (C, Log);
+
+   function Exp (Arg : double) return double;
+   pragma Import (C, Exp);
+
+   function Sqrt (Arg : double) return double;
+   pragma Import (C, Sqrt);
+
+   function Asin (Arg : double) return double;
+   pragma Import (C, Asin);
+
+   function Acos (Arg : double) return double;
+   pragma Import (C, Acos);
+
+   function Asinh (Arg : double) return double;
+   pragma Import (C, Asinh);
+
+   function Acosh (Arg : double) return double;
+   pragma Import (C, Acosh);
+
+   function Atanh (X : double) return double;
+   pragma Import (C, Atanh);
+
+   function Atan2 (X, Y : double) return double;
+   pragma Import (C, Atan2);
+
+   type String_Cacc is access constant String;
+   type Foreign_Record is record
+      Name : String_Cacc;
+      Addr : Address;
+   end record;
+
+
+   Foreign_Arr : constant array (Natural range <>) of Foreign_Record :=
+     (
+      (new String'("sin"), Sin'Address),
+      (new String'("log"), Log'Address),
+      (new String'("exp"), Exp'Address),
+      (new String'("sqrt"), Sqrt'Address),
+      (new String'("asin"), Asin'Address),
+      (new String'("acos"), Acos'Address),
+      (new String'("asinh"), Asinh'Address),
+      (new String'("acosh"), Acosh'Address),
+      (new String'("atanh"), Atanh'Address),
+      (new String'("atan2"), Atan2'Address)
+     );
+
+   function Find_Foreign (Name : String) return Address is
+   begin
+      for I in Foreign_Arr'Range loop
+         if Foreign_Arr(I).Name.all = Name then
+            return Foreign_Arr(I).Addr;
+         end if;
+      end loop;
+      return Null_Address;
+   end Find_Foreign;
+end Foreigns;