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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:48 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:48 -0800
commit3bbe5328cd738976443822502e23fb3971c5f87b (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /qemu.h
parent1c83481e3c1a4e0df017147fdfa7d856dd3012ed (diff)
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auto import from //depot/cupcake/@135843
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diff --git a/qemu.h b/qemu.h
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-/*
- * 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 */