From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/ada/s-scaval.ads | 93 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 gcc/ada/s-scaval.ads (limited to 'gcc/ada/s-scaval.ads') diff --git a/gcc/ada/s-scaval.ads b/gcc/ada/s-scaval.ads new file mode 100644 index 000000000..9ebbd50bb --- /dev/null +++ b/gcc/ada/s-scaval.ads @@ -0,0 +1,93 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- S Y S T E M . S C A L A R _ V A L U E S -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 2001-2009, 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 -- +-- . -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This package defines the constants used for initializing scalar values +-- when pragma Initialize_Scalars is used. The actual values are defined +-- in the binder generated file. This package contains the Ada names that +-- are used by the generated code, which are linked to the actual values +-- by the use of pragma Import. + +package System.Scalar_Values is + + -- Note: logically this package should be Pure since it can be accessed + -- from pure units, but the IS_xxx variables below get set at run time, + -- so they have to be library level variables. In fact we only ever + -- access this from generated code, and the compiler knows that it is + -- OK to access this unit from generated code. + + type Byte1 is mod 2 ** 8; + type Byte2 is mod 2 ** 16; + type Byte4 is mod 2 ** 32; + type Byte8 is mod 2 ** 64; + + -- The explicit initializations here are not really required, since these + -- variables are always set by System.Scalar_Values.Initialize. + + IS_Is1 : Byte1 := 0; -- Initialize 1 byte signed + IS_Is2 : Byte2 := 0; -- Initialize 2 byte signed + IS_Is4 : Byte4 := 0; -- Initialize 4 byte signed + IS_Is8 : Byte8 := 0; -- Initialize 8 byte signed + -- For the above cases, the undefined value (set by the binder -Sin switch) + -- is the largest negative number (1 followed by all zero bits). + + IS_Iu1 : Byte1 := 0; -- Initialize 1 byte unsigned + IS_Iu2 : Byte2 := 0; -- Initialize 2 byte unsigned + IS_Iu4 : Byte4 := 0; -- Initialize 4 byte unsigned + IS_Iu8 : Byte8 := 0; -- Initialize 8 byte unsigned + -- For the above cases, the undefined value (set by the binder -Sin switch) + -- is the largest unsigned number (all 1 bits). + + IS_Iz1 : Byte1 := 0; -- Initialize 1 byte zeroes + IS_Iz2 : Byte2 := 0; -- Initialize 2 byte zeroes + IS_Iz4 : Byte4 := 0; -- Initialize 4 byte zeroes + IS_Iz8 : Byte8 := 0; -- Initialize 8 byte zeroes + -- For the above cases, the undefined value (set by the binder -Sin switch) + -- is the zero (all 0 bits). This is used when zero is known to be an + -- invalid value. + + -- The float definitions are aliased, because we use overlays to set them + + IS_Isf : aliased Short_Float := 0.0; -- Initialize short float + IS_Ifl : aliased Float := 0.0; -- Initialize float + IS_Ilf : aliased Long_Float := 0.0; -- Initialize long float + IS_Ill : aliased Long_Long_Float := 0.0; -- Initialize long long float + + procedure Initialize (Mode1 : Character; Mode2 : Character); + -- This procedure is called from the binder when Initialize_Scalars mode + -- is active. The arguments are the two characters from the -S switch, + -- with letters forced upper case. So for example if -S5a is given, then + -- Mode1 will be '5' and Mode2 will be 'A'. If the parameters are EV, + -- then this routine reads the environment variable GNAT_INIT_SCALARS. + -- The possible settings are the same as those for the -S switch (except + -- for EV), i.e. IN/LO/HO/xx, xx = 2 hex digits. If no -S switch is given + -- then the default of IN (invalid values) is passed on the call. + +end System.Scalar_Values; -- cgit v1.2.3