1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- E X P _ V F P T -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2012, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- 17-- for more details. You should have received a copy of the GNU General -- 18-- Public License distributed with GNAT; see file COPYING3. If not, go to -- 19-- http://www.gnu.org/licenses for a complete copy of the license. -- 20-- -- 21-- GNAT was originally developed by the GNAT team at New York University. -- 22-- Extensive contributions were provided by Ada Core Technologies Inc. -- 23-- -- 24------------------------------------------------------------------------------ 25 26-- This package contains specialized routines for handling the expansion 27-- of arithmetic and conversion operations involving Vax format floating- 28-- point formats as used on the Vax and the Alpha and the ia64. 29 30with Types; use Types; 31with Uintp; use Uintp; 32 33package Exp_VFpt is 34 35 procedure Expand_Vax_Arith (N : Node_Id); 36 -- The node N is an arithmetic node (N_Op_Abs, N_Op_Add, N_Op_Sub, 37 -- N_Op_Div, N_Op_Mul, N_Op_Minus where the operands are in Vax float 38 -- format. This procedure expands the necessary call. 39 40 procedure Expand_Vax_Comparison (N : Node_Id); 41 -- The node N is an arithmetic comparison node where the types to be 42 -- compared are in Vax float format. This procedure expands the necessary 43 -- call. 44 45 procedure Expand_Vax_Conversion (N : Node_Id); 46 -- The node N is a type conversion node where either the source or the 47 -- target type, or both, are Vax floating-point type. 48 49 procedure Expand_Vax_Foreign_Return (N : Node_Id); 50 -- The node N is a call to a foreign function that returns a Vax float 51 -- value in a floating point register. Wraps the call in an asm stub 52 -- that moves the return value to an integer location on Alpha/VMS, 53 -- noop everywhere else. 54 55 function Get_Vax_Real_Literal_As_Signed (N : Node_Id) return Uint; 56 -- Get the Vax binary representation of a real literal whose type is a Vax 57 -- floating-point type. This is used by gigi. Previously we expanded real 58 -- literal to a call to a LIB$OTS routine that performed the conversion. 59 -- This worked correctly from a funcional point of view, but was 60 -- inefficient and generated huge functions for aggregate initializations. 61 62 procedure Expand_Vax_Valid (N : Node_Id); 63 -- The node N is an attribute reference node for the Valid attribute where 64 -- the prefix is of a Vax floating-point type. This procedure expands the 65 -- necessary call for the validity test. 66 67end Exp_VFpt; 68