LXR qemu/include/semihosting/semihost.h

   1/*
   2 * Semihosting support
   3 *
   4 * Copyright (c) 2015 Imagination Technologies
   5 *
   6 * This library is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU Lesser General Public
   8 * License as published by the Free Software Foundation; either
   9 * version 2.1 of the License, or (at your option) any later version.
  10 *
  11 * This library is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 * Lesser General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU Lesser General Public
  17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20#ifndef SEMIHOST_H
  21#define SEMIHOST_H
  22
  23typedef enum SemihostingTarget {
  24    SEMIHOSTING_TARGET_AUTO = 0,
  25    SEMIHOSTING_TARGET_NATIVE,
  26    SEMIHOSTING_TARGET_GDB
  27} SemihostingTarget;
  28
  29#ifdef CONFIG_USER_ONLY
  30static inline bool semihosting_enabled(bool is_user)
  31{
  32    return true;
  33}
  34
  35static inline SemihostingTarget semihosting_get_target(void)
  36{
  37    return SEMIHOSTING_TARGET_AUTO;
  38}
  39
  40static inline const char *semihosting_get_arg(int i)
  41{
  42    return NULL;
  43}
  44
  45static inline int semihosting_get_argc(void)
  46{
  47    return 0;
  48}
  49
  50static inline const char *semihosting_get_cmdline(void)
  51{
  52    return NULL;
  53}
  54#else /* !CONFIG_USER_ONLY */
  55/**
  56 * semihosting_enabled:
  57 * @is_user: true if guest code is in usermode (i.e. not privileged)
  58 *
  59 * Return true if guest code is allowed to make semihosting calls.
  60 */
  61bool semihosting_enabled(bool is_user);
  62SemihostingTarget semihosting_get_target(void);
  63const char *semihosting_get_arg(int i);
  64int semihosting_get_argc(void);
  65const char *semihosting_get_cmdline(void);
  66void semihosting_arg_fallback(const char *file, const char *cmd);
  67/* for vl.c hooks */
  68void qemu_semihosting_enable(void);
  69int qemu_semihosting_config_options(const char *opt);
  70void qemu_semihosting_chardev_init(void);
  71void qemu_semihosting_console_init(Chardev *);
  72#endif /* CONFIG_USER_ONLY */
  73void qemu_semihosting_guestfd_init(void);
  74
  75#endif /* SEMIHOST_H */
  76