docs/qdev-device-use: Don't suggest -drive and -net can do USB
[qemu.git] / stubs / semihost.c
1 /*
2 * Semihosting Stubs for SoftMMU
3 *
4 * Copyright (c) 2019 Linaro Ltd
5 *
6 * Stubs for SoftMMU targets that don't actually do semihosting.
7 *
8 * SPDX-License-Identifier: GPL-2.0-or-later
9 */
10
11 #include "qemu/osdep.h"
12 #include "qemu/option.h"
13 #include "qemu/error-report.h"
14 #include "hw/semihosting/semihost.h"
15 #include "sysemu/sysemu.h"
16
17 /* Empty config */
18 QemuOptsList qemu_semihosting_config_opts = {
19 .name = "",
20 .head = QTAILQ_HEAD_INITIALIZER(qemu_semihosting_config_opts.head),
21 .desc = {
22 { /* end of list */ }
23 },
24 };
25
26 /* Queries to config status default to off */
27 bool semihosting_enabled(void)
28 {
29 return false;
30 }
31
32 SemihostingTarget semihosting_get_target(void)
33 {
34 return SEMIHOSTING_TARGET_AUTO;
35 }
36
37 /*
38 * All the rest are empty subs. We could g_assert_not_reached() but
39 * that adds extra weight to the final binary. Waste not want not.
40 */
41 void qemu_semihosting_enable(void)
42 {
43 }
44
45 int qemu_semihosting_config_options(const char *optarg)
46 {
47 return 1;
48 }
49
50 const char *semihosting_get_arg(int i)
51 {
52 return NULL;
53 }
54
55 int semihosting_get_argc(void)
56 {
57 return 0;
58 }
59
60 const char *semihosting_get_cmdline(void)
61 {
62 return NULL;
63 }
64
65 void semihosting_arg_fallback(const char *file, const char *cmd)
66 {
67 }
68
69 void qemu_semihosting_connect_chardevs(void)
70 {
71 }
72
73 void qemu_semihosting_console_init(void)
74 {
75 }