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Diffstat (limited to 'qemu.h')
| -rw-r--r-- | qemu.h | 110 |
1 files changed, 0 insertions, 110 deletions
@@ -1,110 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -#ifndef _libs_hardware_qemu_h -#define _libs_hardware_qemu_h - -#ifdef __cplusplus -extern "C" { -#endif - -#ifdef QEMU_HARDWARE - -/* returns 1 iff we're running in the emulator */ -extern int qemu_check(void); - -/* a structure used to hold enough state to connect to a given - * QEMU communication channel, either through a qemud socket or - * a serial port. - * - * initialize the structure by zero-ing it out - */ -typedef struct { - char is_inited; - char is_available; - char is_qemud; - char is_tty; - char device[32]; -} QemuChannel; - -/* try to open a qemu communication channel. - * returns a file descriptor on success, or -1 in case of - * error. - * - * 'channel' must be a QemuChannel structure that is empty - * on the first call. You can call this function several - * time to re-open the channel using the same 'channel' - * object to speed things a bit. - */ -extern int qemu_channel_open( QemuChannel* channel, - const char* name, - int mode ); - -/* create a command made of a 4-hexchar prefix followed - * by the content. the prefix contains the content's length - * in hexadecimal coding. - * - * 'buffer' must be at last 6 bytes - * returns -1 in case of overflow, or the command's total length - * otherwise (i.e. content length + 4) - */ -extern int qemu_command_format( char* buffer, - int buffer_size, - const char* format, - ... ); - -/* directly sends a command through the 'control' channel. - * this will open the channel, send the formatted command, then - * close the channel automatically. - * returns 0 on success, or -1 on error. - */ -extern int qemu_control_command( const char* fmt, ... ); - -/* sends a question to the control channel, then receive an answer in - * a user-allocated buffer. returns the lenght of the answer, or -1 - * in case of error. - * - * 'question' *must* have been formatted through qemu_command_format - */ -extern int qemu_control_query( const char* question, int questionlen, - char* answer, int answersize ); - -#endif /* QEMU_HARDWARE */ - -/* use QEMU_FALLBACK(call) to call a QEMU-specific callback */ -/* use QEMU_FALLBACK_VOID(call) if the function returns void */ -#ifdef QEMU_HARDWARE -# define QEMU_FALLBACK(x) \ - do { \ - if (qemu_check()) \ - return qemu_ ## x ; \ - } while (0) -# define QEMU_FALLBACK_VOID(x) \ - do { \ - if (qemu_check()) { \ - qemu_ ## x ; \ - return; \ - } \ - } while (0) -#else -# define QEMU_FALLBACK(x) ((void)0) -# define QEMU_FALLBACK_VOID(x) ((void)0) -#endif - -#ifdef __cplusplus -} -#endif - -#endif /* _libs_hardware_qemu_h */ |