1 (* RawIO.mod implement the ISO RawIO specification.
3 Copyright (C) 2008-2024 Free Software Foundation, Inc.
4 Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
6 This file is part of GNU Modula-2.
8 GNU Modula-2 is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 GNU Modula-2 is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 Under Section 7 of GPL version 3, you are granted additional
19 permissions described in the GCC Runtime Library Exception, version
20 3.1, as published by the Free Software Foundation.
22 You should have received a copy of the GNU General Public License and
23 a copy of the GCC Runtime Library Exception along with this program;
24 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
25 <http://www.gnu.org/licenses/>. *)
27 IMPLEMENTATION MODULE RawIO
;
29 FROM IOChan
IMPORT RawWrite
, RawRead
, ReadResult
;
30 FROM IOConsts
IMPORT ReadResults
;
31 FROM libc
IMPORT printf
;
32 FROM FIO
IMPORT FlushOutErr
;
35 (* Reading and writing data over specified channels using raw
36 operations, that is, with no conversion or interpretation.
37 The read result is of the type IOConsts.ReadResults.
41 Read - storage units from cid, and assigns them to successive
42 components of to. The read result is set to the value
43 allRight, wrongFormat, or endOfInput.
46 PROCEDURE Read (cid
: IOChan.ChanId
; VAR to
: ARRAY OF SYSTEM.LOC
) ;
55 RawRead(cid
, a
, n
, i
) ;
57 (ReadResult(cid
)=wrongFormat
) OR
58 (ReadResult(cid
)=endOfInput
)
73 PROCEDURE memDump (a
: SYSTEM.ADDRESS
; len
: CARDINAL) ;
76 p
: POINTER TO SYSTEM.LOC
;
83 printf ("\n%p %02x", p
, VAL(CARDINAL, p^
))
85 printf (" %02x", VAL(CARDINAL, p^
))
95 Write - storage units to cid from successive components of from.
98 PROCEDURE Write (cid
: IOChan.ChanId
; from
: ARRAY OF SYSTEM.LOC
);
101 printf ("in RawIO.mod ");
102 memDump (SYSTEM.ADR(from), HIGH(from)+1) ;
104 RawWrite(cid
, SYSTEM.
ADR(from
), HIGH(from
)+1)