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 }