aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.9/gcc/ada/s-vaflop.ads
diff options
context:
space:
mode:
Diffstat (limited to 'gcc-4.9/gcc/ada/s-vaflop.ads')
-rw-r--r--gcc-4.9/gcc/ada/s-vaflop.ads247
1 files changed, 247 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/ada/s-vaflop.ads b/gcc-4.9/gcc/ada/s-vaflop.ads
new file mode 100644
index 000000000..49120b74e
--- /dev/null
+++ b/gcc-4.9/gcc/ada/s-vaflop.ads
@@ -0,0 +1,247 @@
+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- S Y S T E M . V A X _ F L O A T _ O P E R A T I O N S --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 1997-2009, 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. --
+-- --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception, --
+-- version 3.1, as published by the Free Software Foundation. --
+-- --
+-- You should have received a copy of the GNU General Public License and --
+-- a copy of the GCC Runtime Library Exception along with this program; --
+-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
+-- <http://www.gnu.org/licenses/>. --
+-- --
+-- GNAT was originally developed by the GNAT team at New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
+-- --
+------------------------------------------------------------------------------
+
+-- This package contains runtime routines for handling the non-IEEE
+-- floating-point formats used on the Vax and the Alpha.
+
+package System.Vax_Float_Operations is
+
+ pragma Warnings (Off);
+ -- Suppress warnings if not on Alpha/VAX
+
+ type D is digits 9;
+ pragma Float_Representation (VAX_Float, D);
+ -- D Float type on Vax
+
+ type G is digits 15;
+ pragma Float_Representation (VAX_Float, G);
+ -- G Float type on Vax
+
+ type F is digits 6;
+ pragma Float_Representation (VAX_Float, F);
+ -- F Float type on Vax
+
+ type S is digits 6;
+ pragma Float_Representation (IEEE_Float, S);
+ -- IEEE short
+
+ type T is digits 15;
+ pragma Float_Representation (IEEE_Float, T);
+ -- IEEE long
+
+ pragma Warnings (On);
+
+ type Q is range -2 ** 63 .. +(2 ** 63 - 1);
+ -- 64-bit signed integer
+
+ --------------------------
+ -- Conversion Functions --
+ --------------------------
+
+ function D_To_G (X : D) return G;
+ function G_To_D (X : G) return D;
+ -- Conversions between D float and G float
+
+ function G_To_F (X : G) return F;
+ function F_To_G (X : F) return G;
+ -- Conversions between F float and G float
+
+ function F_To_S (X : F) return S;
+ function S_To_F (X : S) return F;
+ -- Conversions between F float and IEEE short
+
+ function G_To_T (X : G) return T;
+ function T_To_G (X : T) return G;
+ -- Conversions between G float and IEEE long
+
+ function F_To_Q (X : F) return Q;
+ function Q_To_F (X : Q) return F;
+ -- Conversions between F float and 64-bit integer
+
+ function G_To_Q (X : G) return Q;
+ function Q_To_G (X : Q) return G;
+ -- Conversions between G float and 64-bit integer
+
+ function T_To_D (X : T) return D;
+ -- Conversion from IEEE long to D_Float (used for literals)
+
+ --------------------------
+ -- Arithmetic Functions --
+ --------------------------
+
+ function Abs_F (X : F) return F;
+ function Abs_G (X : G) return G;
+ -- Absolute value of F/G float
+
+ function Add_F (X, Y : F) return F;
+ function Add_G (X, Y : G) return G;
+ -- Addition of F/G float
+
+ function Div_F (X, Y : F) return F;
+ function Div_G (X, Y : G) return G;
+ -- Division of F/G float
+
+ function Mul_F (X, Y : F) return F;
+ function Mul_G (X, Y : G) return G;
+ -- Multiplication of F/G float
+
+ function Neg_F (X : F) return F;
+ function Neg_G (X : G) return G;
+ -- Negation of F/G float
+
+ function Sub_F (X, Y : F) return F;
+ function Sub_G (X, Y : G) return G;
+ -- Subtraction of F/G float
+
+ --------------------------
+ -- Comparison Functions --
+ --------------------------
+
+ function Eq_F (X, Y : F) return Boolean;
+ function Eq_G (X, Y : G) return Boolean;
+ -- Compares for X = Y
+
+ function Le_F (X, Y : F) return Boolean;
+ function Le_G (X, Y : G) return Boolean;
+ -- Compares for X <= Y
+
+ function Lt_F (X, Y : F) return Boolean;
+ function Lt_G (X, Y : G) return Boolean;
+ -- Compares for X < Y
+
+ function Ne_F (X, Y : F) return Boolean;
+ function Ne_G (X, Y : G) return Boolean;
+ -- Compares for X /= Y
+
+ ----------------------
+ -- Return Functions --
+ ----------------------
+
+ function Return_D (X : D) return D;
+ function Return_F (X : F) return F;
+ function Return_G (X : G) return G;
+ -- Deal with returned value for an imported function where the function
+ -- result is of VAX Float type. Usually nothing needs to be done, and these
+ -- functions return their argument unchanged. But for the case of VMS Alpha
+ -- the return value is already in $f0, so we need to trick the compiler
+ -- into thinking that we are moving X to $f0. See bodies for this case
+ -- for the Asm sequence generated to achieve this.
+
+ ----------------------------------
+ -- Routines for Valid Attribute --
+ ----------------------------------
+
+ function Valid_D (Arg : D) return Boolean;
+ function Valid_F (Arg : F) return Boolean;
+ function Valid_G (Arg : G) return Boolean;
+ -- Test whether Arg has a valid representation
+
+ ----------------------
+ -- Debug Procedures --
+ ----------------------
+
+ procedure Debug_Output_D (Arg : D);
+ procedure Debug_Output_F (Arg : F);
+ procedure Debug_Output_G (Arg : G);
+ pragma Export (Ada, Debug_Output_D);
+ pragma Export (Ada, Debug_Output_F);
+ pragma Export (Ada, Debug_Output_G);
+ -- These routines output their argument in decimal string form, with
+ -- no terminating line return. They are provided for implicit use by
+ -- the pre gnat-3.12w GDB, and are retained for backwards compatibility.
+
+ function Debug_String_D (Arg : D) return System.Address;
+ function Debug_String_F (Arg : F) return System.Address;
+ function Debug_String_G (Arg : G) return System.Address;
+ pragma Export (Ada, Debug_String_D);
+ pragma Export (Ada, Debug_String_F);
+ pragma Export (Ada, Debug_String_G);
+ -- These routines return a decimal C string image of their argument.
+ -- They are provided for implicit use by the debugger, in response to
+ -- the special encoding used for Vax floating-point types (see Exp_Dbug
+ -- for details). They supersede the above Debug_Output_D/F/G routines
+ -- which didn't work properly with GDBTK.
+
+ procedure pd (Arg : D);
+ procedure pf (Arg : F);
+ procedure pg (Arg : G);
+ pragma Export (Ada, pd);
+ pragma Export (Ada, pf);
+ pragma Export (Ada, pg);
+ -- These are like the Debug_Output_D/F/G procedures except that they
+ -- output a line return after the output. They were originally present
+ -- for direct use in GDB before GDB recognized Vax floating-point
+ -- types, and are retained for backwards compatibility.
+
+private
+ pragma Inline_Always (D_To_G);
+ pragma Inline_Always (F_To_G);
+ pragma Inline_Always (F_To_Q);
+ pragma Inline_Always (F_To_S);
+ pragma Inline_Always (G_To_D);
+ pragma Inline_Always (G_To_F);
+ pragma Inline_Always (G_To_Q);
+ pragma Inline_Always (G_To_T);
+ pragma Inline_Always (Q_To_F);
+ pragma Inline_Always (Q_To_G);
+ pragma Inline_Always (S_To_F);
+ pragma Inline_Always (T_To_G);
+
+ pragma Inline_Always (Abs_F);
+ pragma Inline_Always (Abs_G);
+ pragma Inline_Always (Add_F);
+ pragma Inline_Always (Add_G);
+ pragma Inline_Always (Div_G);
+ pragma Inline_Always (Div_F);
+ pragma Inline_Always (Mul_F);
+ pragma Inline_Always (Mul_G);
+ pragma Inline_Always (Neg_G);
+ pragma Inline_Always (Neg_F);
+ pragma Inline_Always (Return_D);
+ pragma Inline_Always (Return_F);
+ pragma Inline_Always (Return_G);
+ pragma Inline_Always (Sub_F);
+ pragma Inline_Always (Sub_G);
+
+ pragma Inline_Always (Eq_F);
+ pragma Inline_Always (Eq_G);
+ pragma Inline_Always (Le_F);
+ pragma Inline_Always (Le_G);
+ pragma Inline_Always (Lt_F);
+ pragma Inline_Always (Lt_G);
+ pragma Inline_Always (Ne_F);
+ pragma Inline_Always (Ne_G);
+
+ pragma Inline_Always (Valid_D);
+ pragma Inline_Always (Valid_F);
+ pragma Inline_Always (Valid_G);
+
+end System.Vax_Float_Operations;