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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- E X P _ V F P T --
-- --
-- S p e c --
-- --
-- Copyright (C) 1992-2012, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT 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 distributed with GNAT; see file COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This package contains specialized routines for handling the expansion
-- of arithmetic and conversion operations involving Vax format floating-
-- point formats as used on the Vax and the Alpha and the ia64.
with Types; use Types;
with Uintp; use Uintp;
package Exp_VFpt is
procedure Expand_Vax_Arith (N : Node_Id);
-- The node N is an arithmetic node (N_Op_Abs, N_Op_Add, N_Op_Sub,
-- N_Op_Div, N_Op_Mul, N_Op_Minus where the operands are in Vax float
-- format. This procedure expands the necessary call.
procedure Expand_Vax_Comparison (N : Node_Id);
-- The node N is an arithmetic comparison node where the types to be
-- compared are in Vax float format. This procedure expands the necessary
-- call.
procedure Expand_Vax_Conversion (N : Node_Id);
-- The node N is a type conversion node where either the source or the
-- target type, or both, are Vax floating-point type.
procedure Expand_Vax_Foreign_Return (N : Node_Id);
-- The node N is a call to a foreign function that returns a Vax float
-- value in a floating point register. Wraps the call in an asm stub
-- that moves the return value to an integer location on Alpha/VMS,
-- noop everywhere else.
function Get_Vax_Real_Literal_As_Signed (N : Node_Id) return Uint;
-- Get the Vax binary representation of a real literal whose type is a Vax
-- floating-point type. This is used by gigi. Previously we expanded real
-- literal to a call to a LIB$OTS routine that performed the conversion.
-- This worked correctly from a funcional point of view, but was
-- inefficient and generated huge functions for aggregate initializations.
procedure Expand_Vax_Valid (N : Node_Id);
-- The node N is an attribute reference node for the Valid attribute where
-- the prefix is of a Vax floating-point type. This procedure expands the
-- necessary call for the validity test.
end Exp_VFpt;
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