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 *optstr); 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 */ 76