stubs/semihost.c

   1 /*
   2  * Semihosting Stubs for system emulation
   3  *
   4  * Copyright (c) 2019 Linaro Ltd
   5  *
   6  * Stubs for system 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 "semihosting/semihost.h"
  15
  16 /* Empty config */
  17 QemuOptsList qemu_semihosting_config_opts = {
  18     .name = "",
  19     .head = QTAILQ_HEAD_INITIALIZER(qemu_semihosting_config_opts.head),
  20     .desc = {
  21         { /* end of list */ }
  22     },
  23 };
  24
  25 /* Queries to config status default to off */
  26 bool semihosting_enabled(bool is_user)
  27 {
  28     return false;
  29 }
  30
  31 /*
  32  * All the rest are empty subs. We could g_assert_not_reached() but
  33  * that adds extra weight to the final binary. Waste not want not.
  34  */
  35 void qemu_semihosting_enable(void)
  36 {
  37 }
  38
  39 int qemu_semihosting_config_options(const char *optstr)
  40 {
  41     return 1;
  42 }
  43
  44 const char *semihosting_get_arg(int i)
  45 {
  46     return NULL;
  47 }
  48
  49 int semihosting_get_argc(void)
  50 {
  51     return 0;
  52 }
  53
  54 const char *semihosting_get_cmdline(void)
  55 {
  56     return NULL;
  57 }
  58
  59 void semihosting_arg_fallback(const char *file, const char *cmd)
  60 {
  61 }
  62
  63 void qemu_semihosting_chardev_init(void)
  64 {
  65 }