Commit | Line | Data |
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c906108c | 1 | /* m32r device support |
32d0add0 | 2 | Copyright (C) 1997-2015 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by Cygnus Solutions. |
4 | ||
5 | This file is part of GDB, the GNU debugger. | |
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 | |
4744ac1b JB |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
c906108c SS |
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 | ||
4744ac1b JB |
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/>. */ | |
c906108c SS |
19 | |
20 | #include "sim-main.h" | |
21 | ||
22 | #ifdef HAVE_DV_SOCKSER | |
23 | #include "dv-sockser.h" | |
24 | #endif | |
25 | ||
26 | /* Handling the MSPR register is done by creating a device in the core | |
27 | mapping that winds up here. */ | |
28 | ||
29 | device m32r_devices; | |
30 | ||
31 | int | |
32 | device_io_read_buffer (device *me, void *source, int space, | |
33 | address_word addr, unsigned nr_bytes, | |
7a292a7a | 34 | SIM_DESC sd, SIM_CPU *cpu, sim_cia cia) |
c906108c | 35 | { |
c906108c SS |
36 | if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT) |
37 | return nr_bytes; | |
38 | ||
39 | #ifdef HAVE_DV_SOCKSER | |
40 | if (addr == UART_INCHAR_ADDR) | |
41 | { | |
42 | int c = dv_sockser_read (sd); | |
43 | if (c == -1) | |
44 | return 0; | |
45 | *(char *) source = c; | |
46 | return 1; | |
47 | } | |
48 | if (addr == UART_STATUS_ADDR) | |
49 | { | |
50 | int status = dv_sockser_status (sd); | |
51 | unsigned char *p = source; | |
52 | p[0] = 0; | |
53 | p[1] = (((status & DV_SOCKSER_INPUT_EMPTY) | |
54 | #ifdef UART_INPUT_READY0 | |
55 | ? UART_INPUT_READY : 0) | |
56 | #else | |
57 | ? 0 : UART_INPUT_READY) | |
58 | #endif | |
59 | + ((status & DV_SOCKSER_OUTPUT_EMPTY) ? UART_OUTPUT_READY : 0)); | |
60 | return 2; | |
61 | } | |
62 | #endif | |
63 | ||
64 | return nr_bytes; | |
65 | } | |
66 | ||
67 | int | |
68 | device_io_write_buffer (device *me, const void *source, int space, | |
69 | address_word addr, unsigned nr_bytes, | |
7a292a7a | 70 | SIM_DESC sd, SIM_CPU *cpu, sim_cia cia) |
c906108c | 71 | { |
c906108c SS |
72 | #if WITH_SCACHE |
73 | /* MSPR support is deprecated but is kept in for upward compatibility | |
74 | with existing overlay support. */ | |
75 | if (addr == MSPR_ADDR) | |
76 | { | |
77 | if ((*(const char *) source & MSPR_PURGE) != 0) | |
78 | scache_flush (sd); | |
79 | return nr_bytes; | |
80 | } | |
81 | if (addr == MCCR_ADDR) | |
82 | { | |
83 | if ((*(const char *) source & MCCR_CP) != 0) | |
84 | scache_flush (sd); | |
85 | return nr_bytes; | |
86 | } | |
87 | #endif | |
88 | ||
89 | if (STATE_ENVIRONMENT (sd) != OPERATING_ENVIRONMENT) | |
90 | return nr_bytes; | |
91 | ||
92 | #ifdef HAVE_DV_SOCKSER | |
93 | if (addr == UART_OUTCHAR_ADDR) | |
94 | { | |
95 | int rc = dv_sockser_write (sd, *(char *) source); | |
96 | return rc == 1; | |
97 | } | |
98 | #endif | |
99 | ||
100 | return nr_bytes; | |
101 | } | |
102 | ||
7a292a7a | 103 | void |
fb0cc53e | 104 | device_error (device *me, const char *message, ...) |
7a292a7a SS |
105 | { |
106 | } |