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
  23 typedef enum SemihostingTarget {
  24     SEMIHOSTING_TARGET_AUTO = 0,
  25     SEMIHOSTING_TARGET_NATIVE,
  26     SEMIHOSTING_TARGET_GDB
  27 } SemihostingTarget;
  28
  29 #ifdef CONFIG_USER_ONLY
  30 static inline bool semihosting_enabled(bool is_user)
  31 {
  32     return true;
  33 }
  34
  35 static inline SemihostingTarget semihosting_get_target(void)
  36 {
  37     return SEMIHOSTING_TARGET_AUTO;
  38 }
  39
  40 static inline const char *semihosting_get_arg(int i)
  41 {
  42     return NULL;
  43 }
  44
  45 static inline int semihosting_get_argc(void)
  46 {
  47     return 0;
  48 }
  49
  50 static 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  */
  61 bool semihosting_enabled(bool is_user);
  62 SemihostingTarget semihosting_get_target(void);
  63 const char *semihosting_get_arg(int i);
  64 int semihosting_get_argc(void);
  65 const char *semihosting_get_cmdline(void);
  66 void semihosting_arg_fallback(const char *file, const char *cmd);
  67 /* for vl.c hooks */
  68 void qemu_semihosting_enable(void);
  69 int qemu_semihosting_config_options(const char *opt);
  70 void qemu_semihosting_chardev_init(void);
  71 void qemu_semihosting_console_init(Chardev *);
  72 #endif /* CONFIG_USER_ONLY */
  73 void qemu_semihosting_guestfd_init(void);
  74
  75 #endif /* SEMIHOST_H */