source: rtems/c/src/lib/libbsp/sh/shsim/console/console-io.c @ 6279149

4.115
Last change on this file since 6279149 was 6279149, checked in by Joel Sherrill <joel.sherrill@…>, on Oct 8, 2014 at 9:04:56 PM

Add console-polled.h and update all BSPs that should use it.

The file console-polled.h provides the prototypes for the three
required methods when implementing a single port polled console
driver. This paradigm is common on simulators and simple hardware.

+ Updated the BSPs Makefile.am to make console-polled.h available.
+ Regenerated the BSPs preinstall.sm.
+ Updated console support files to include <bsp/console-polled.h>.
+ Updated console support files to make printk() support method static.

  • Property mode set to 100644
File size: 1.2 KB
Line 
1/*
2 *  This file contains the hardware specific portions of the TTY driver
3 *  for the simulators stdin/out.
4 */
5
6/*
7 *  COPYRIGHT (c) 1989-2011.
8 *  On-Line Applications Research Corporation (OAR).
9 *
10 *  The license and distribution terms for this file may be
11 *  found in the file LICENSE in this distribution or at
12 *  http://www.rtems.org/license/LICENSE.
13 */
14
15#include <bsp.h>
16#include <bsp/console-polled.h>
17#include <rtems/libio.h>
18#include <stdlib.h>
19#include <assert.h>
20
21#include <bsp/syscall.h>
22
23int errno;
24
25extern int __trap34(int, int, void*, int );
26
27/*
28 *  console_initialize_hardware
29 *
30 *  This routine initializes the console hardware.
31 *
32 */
33
34void console_initialize_hardware(void)
35{
36  return;
37}
38
39/*
40 *  console_outbyte_polled
41 *
42 *  This routine transmits a character using polling.
43 */
44
45void console_outbyte_polled(
46  int  port,
47  char ch
48)
49{
50  __trap34 (SYS_write, 1, &ch, 1);
51  return;
52}
53
54/*
55 *  console_inbyte_nonblocking
56 *
57 *  This routine polls for a character.
58 */
59
60int console_inbyte_nonblocking(
61  int port
62)
63{
64  unsigned char c;
65
66  return __trap34 (SYS_read, 0, &c, 1);
67}
68
69/* XXX wrong place for this */
70int _sys_exit (int n)
71{
72  return __trap34 (SYS_exit, n, 0, 0);
73}
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