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-- GHDL Run Time (GRT) - stdio binding.
-- Copyright (C) 2002 - 2014 Tristan Gingold
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 2 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT 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
-- along with this program. If not, see <gnu.org/licenses>.
--
-- As a special exception, if other files instantiate generics from this
-- unit, or you link this unit with other files to produce an executable,
-- this unit does not by itself cause the resulting executable to be
-- covered by the GNU General Public License. This exception does not
-- however invalidate any other reasons why the executable file might be
-- covered by the GNU Public License.
with System;
with Grt.C; use Grt.C;
-- This package provides a thin binding to the stdio.h of the C library.
-- It mimics GNAT package Interfaces.C_Streams.
-- The purpose of this package is to remove dependencies on the GNAT run time.
package Grt.Stdio is
pragma Preelaborate (Grt.Stdio);
-- Type FILE *.
type FILEs is new System.Address;
-- NULL for a stream.
NULL_Stream : constant FILEs;
-- NULL for a void pointer
NULL_voids : constant voids;
-- Predefined streams.
function stdout return FILEs;
function stderr return FILEs;
function stdin return FILEs;
-- The following subprograms are translation of the C prototypes.
function fopen (path: chars; mode : chars) return FILEs;
procedure setbuf (stream : FILEs; buffer : voids);
function fwrite
(buffer : voids; size : size_t; count : size_t; stream : FILEs)
return size_t;
function fread
(buffer : voids; size : size_t; count : size_t; stream : FILEs)
return size_t;
function fputc (c : int; stream : FILEs) return int;
procedure fputc (c : int; stream : FILEs);
function fputs (s : chars; stream : FILEs) return int;
function fgetc (stream : FILEs) return int;
function fgets (s : chars; size : int; stream : FILEs) return chars;
function ungetc (c : int; stream : FILEs) return int;
function fflush (stream : FILEs) return int;
procedure fflush (stream : FILEs);
function feof (stream : FILEs) return int;
function ftell (stream : FILEs) return long;
function fclose (stream : FILEs) return int;
procedure fclose (Stream : FILEs);
private
-- This is a little bit dubious, but this package should be preelaborated,
-- and Null_Address is not static (since defined in the private part
-- of System).
-- I am pretty sure the C definition of NULL is 0.
NULL_Stream : constant FILEs := FILEs (System'To_Address (0));
NULL_voids : constant voids := voids (System'To_Address (0));
pragma Import (C, fopen);
pragma Import (C, setbuf);
pragma Import (C, fwrite);
pragma Import (C, fread);
pragma Import (C, fputs);
pragma Import (C, fputc, "putc_unlocked");
pragma Import (C, fgetc, "getc_unlocked");
pragma Import (C, fgets);
pragma Import (C, ungetc);
pragma Import (C, fflush);
pragma Import (C, feof, "feof_unlocked");
pragma Import (C, ftell);
pragma Import (C, fclose);
pragma Import (C, stdout, "__ghdl_get_stdout");
pragma Import (C, stderr, "__ghdl_get_stderr");
pragma Import (C, stdin, "__ghdl_get_stdin");
end Grt.Stdio;
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