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b34f6357 | 1 | /* frv device support |
e4d013fc | 2 | Copyright (C) 1998, 1999, 2007, 2008, 2009 Free Software Foundation, Inc. |
b34f6357 DB |
3 | Contributed by Red Hat. |
4 | ||
5 | This file is part of the GNU simulators. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
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9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
b34f6357 DB |
11 | |
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
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17 | You should have received a copy of the GNU General Public License |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
b34f6357 DB |
19 | |
20 | /* ??? All of this is just to get something going. wip! */ | |
21 | ||
22 | #include "sim-main.h" | |
23 | ||
24 | #ifdef HAVE_DV_SOCKSER | |
25 | #include "dv-sockser.h" | |
26 | #endif | |
27 | ||
28 | device frv_devices; | |
29 | ||
30 | int | |
31 | device_io_read_buffer (device *me, void *source, int space, | |
32 | address_word addr, unsigned nr_bytes, | |
33 | SIM_DESC sd, SIM_CPU *cpu, sim_cia cia) | |
34 | { | |
35 | if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT) | |
36 | return nr_bytes; | |
37 | ||
38 | #ifdef HAVE_DV_SOCKSER | |
39 | if (addr == UART_INCHAR_ADDR) | |
40 | { | |
41 | int c = dv_sockser_read (sd); | |
42 | if (c == -1) | |
43 | return 0; | |
44 | *(char *) source = c; | |
45 | return 1; | |
46 | } | |
47 | if (addr == UART_STATUS_ADDR) | |
48 | { | |
49 | int status = dv_sockser_status (sd); | |
50 | unsigned char *p = source; | |
51 | p[0] = 0; | |
52 | p[1] = (((status & DV_SOCKSER_INPUT_EMPTY) | |
53 | #ifdef UART_INPUT_READY0 | |
54 | ? UART_INPUT_READY : 0) | |
55 | #else | |
56 | ? 0 : UART_INPUT_READY) | |
57 | #endif | |
58 | + ((status & DV_SOCKSER_OUTPUT_EMPTY) ? UART_OUTPUT_READY : 0)); | |
59 | return 2; | |
60 | } | |
61 | #endif | |
62 | ||
63 | return nr_bytes; | |
64 | } | |
65 | ||
66 | int | |
67 | device_io_write_buffer (device *me, const void *source, int space, | |
68 | address_word addr, unsigned nr_bytes, | |
69 | SIM_DESC sd, SIM_CPU *cpu, sim_cia cia) | |
70 | { | |
71 | ||
72 | #if WITH_SCACHE | |
73 | if (addr == MCCR_ADDR) | |
74 | { | |
75 | if ((*(const char *) source & MCCR_CP) != 0) | |
76 | scache_flush (sd); | |
77 | return nr_bytes; | |
78 | } | |
79 | #endif | |
80 | ||
81 | if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT) | |
82 | return nr_bytes; | |
83 | ||
84 | #if HAVE_DV_SOCKSER | |
85 | if (addr == UART_OUTCHAR_ADDR) | |
86 | { | |
87 | int rc = dv_sockser_write (sd, *(char *) source); | |
88 | return rc == 1; | |
89 | } | |
90 | #endif | |
91 | ||
92 | return nr_bytes; | |
93 | } | |
94 | ||
95 | void device_error (device *me, char* message, ...) {} |