1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
/* i960 device support
Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
Contributed by Cygnus Solutions.
This file is part of GDB, the GNU debugger.
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, 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, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "sim-main.h"
#ifdef HAVE_DV_SOCKSER
#include "dv-sockser.h"
#endif
/* Handling the MSPR register is done by creating a device in the core
mapping that winds up here. */
device i960_devices;
int
device_io_read_buffer (device *me, void *source, int space,
address_word addr, unsigned nr_bytes,
SIM_DESC sd, SIM_CPU *cpu, sim_cia cia)
{
if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT)
return nr_bytes;
#ifdef HAVE_DV_SOCKSER
if (addr == UART_INCHAR_ADDR)
{
int c = dv_sockser_read (sd);
if (c == -1)
return 0;
*(char *) source = c;
return 1;
}
if (addr == UART_STATUS_ADDR)
{
int status = dv_sockser_status (sd);
unsigned char *p = source;
p[0] = 0;
p[1] = (((status & DV_SOCKSER_INPUT_EMPTY)
#ifdef UART_INPUT_READY0
? UART_INPUT_READY : 0)
#else
? 0 : UART_INPUT_READY)
#endif
+ ((status & DV_SOCKSER_OUTPUT_EMPTY) ? UART_OUTPUT_READY : 0));
return 2;
}
#endif
return nr_bytes;
}
int
device_io_write_buffer (device *me, const void *source, int space,
address_word addr, unsigned nr_bytes,
SIM_DESC sd, SIM_CPU *cpu, sim_cia cia)
{
#if WITH_SCACHE
/* MSPR support is deprecated but is kept in for upward compatibility
with existing overlay support. */
if (addr == MSPR_ADDR)
{
if ((*(const char *) source & MSPR_PURGE) != 0)
scache_flush (sd);
return nr_bytes;
}
if (addr == MCCR_ADDR)
{
if ((*(const char *) source & MCCR_CP) != 0)
scache_flush (sd);
return nr_bytes;
}
#endif
if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT)
return nr_bytes;
#if HAVE_DV_SOCKSER
if (addr == UART_OUTCHAR_ADDR)
{
int rc = dv_sockser_write (sd, *(char *) source);
return rc == 1;
}
#endif
return nr_bytes;
}
void
device_error (device *me, char *message, ...)
{
}
|
