Merge remote-tracking branch 'mdroth/qga-pull-5-29-12-v2' into staging
[qemu/wangdongxu.git] / qemu-common.h
blobcccfb42dd609879e5e45d3e9f01b3a086d71c26e
1 /* Common header file that is included by all of qemu. */
2 #ifndef QEMU_COMMON_H
3 #define QEMU_COMMON_H
5 #include "compiler.h"
6 #include "config-host.h"
8 #if defined(__arm__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__) || defined(__ia64__)
9 #define WORDS_ALIGNED
10 #endif
12 #define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
14 typedef struct QEMUTimer QEMUTimer;
15 typedef struct QEMUFile QEMUFile;
16 typedef struct DeviceState DeviceState;
18 struct Monitor;
19 typedef struct Monitor Monitor;
21 /* we put basic includes here to avoid repeating them in device drivers */
22 #include <stdlib.h>
23 #include <stdio.h>
24 #include <stdarg.h>
25 #include <stdbool.h>
26 #include <string.h>
27 #include <strings.h>
28 #include <inttypes.h>
29 #include <limits.h>
30 #include <time.h>
31 #include <ctype.h>
32 #include <errno.h>
33 #include <unistd.h>
34 #include <fcntl.h>
35 #include <sys/stat.h>
36 #include <sys/time.h>
37 #include <assert.h>
38 #include <signal.h>
39 #include <glib.h>
41 #ifdef _WIN32
42 #include "qemu-os-win32.h"
43 #endif
45 #ifdef CONFIG_POSIX
46 #include "qemu-os-posix.h"
47 #endif
49 #ifndef O_LARGEFILE
50 #define O_LARGEFILE 0
51 #endif
52 #ifndef O_BINARY
53 #define O_BINARY 0
54 #endif
55 #ifndef MAP_ANONYMOUS
56 #define MAP_ANONYMOUS MAP_ANON
57 #endif
58 #ifndef ENOMEDIUM
59 #define ENOMEDIUM ENODEV
60 #endif
61 #if !defined(ENOTSUP)
62 #define ENOTSUP 4096
63 #endif
64 #if !defined(ECANCELED)
65 #define ECANCELED 4097
66 #endif
67 #ifndef TIME_MAX
68 #define TIME_MAX LONG_MAX
69 #endif
71 /* HOST_LONG_BITS is the size of a native pointer in bits. */
72 #if UINTPTR_MAX == UINT32_MAX
73 # define HOST_LONG_BITS 32
74 #elif UINTPTR_MAX == UINT64_MAX
75 # define HOST_LONG_BITS 64
76 #else
77 # error Unknown pointer size
78 #endif
80 #ifndef CONFIG_IOVEC
81 #define CONFIG_IOVEC
82 struct iovec {
83 void *iov_base;
84 size_t iov_len;
87 * Use the same value as Linux for now.
89 #define IOV_MAX 1024
90 #else
91 #include <sys/uio.h>
92 #endif
94 typedef int (*fprintf_function)(FILE *f, const char *fmt, ...)
95 GCC_FMT_ATTR(2, 3);
97 #ifdef _WIN32
98 #define fsync _commit
99 #if !defined(lseek)
100 # define lseek _lseeki64
101 #endif
102 int qemu_ftruncate64(int, int64_t);
103 #if !defined(ftruncate)
104 # define ftruncate qemu_ftruncate64
105 #endif
107 static inline char *realpath(const char *path, char *resolved_path)
109 _fullpath(resolved_path, path, _MAX_PATH);
110 return resolved_path;
112 #endif
114 /* icount */
115 void configure_icount(const char *option);
116 extern int use_icount;
118 /* FIXME: Remove NEED_CPU_H. */
119 #ifndef NEED_CPU_H
121 #include "osdep.h"
122 #include "bswap.h"
124 #else
126 #include "cpu.h"
128 #endif /* !defined(NEED_CPU_H) */
130 /* main function, renamed */
131 #if defined(CONFIG_COCOA)
132 int qemu_main(int argc, char **argv, char **envp);
133 #endif
135 void qemu_get_timedate(struct tm *tm, int offset);
136 int qemu_timedate_diff(struct tm *tm);
138 /* cutils.c */
139 void pstrcpy(char *buf, int buf_size, const char *str);
140 char *pstrcat(char *buf, int buf_size, const char *s);
141 int strstart(const char *str, const char *val, const char **ptr);
142 int stristart(const char *str, const char *val, const char **ptr);
143 int qemu_strnlen(const char *s, int max_len);
144 time_t mktimegm(struct tm *tm);
145 int qemu_fls(int i);
146 int qemu_fdatasync(int fd);
147 int fcntl_setfl(int fd, int flag);
148 int qemu_parse_fd(const char *param);
151 * strtosz() suffixes used to specify the default treatment of an
152 * argument passed to strtosz() without an explicit suffix.
153 * These should be defined using upper case characters in the range
154 * A-Z, as strtosz() will use qemu_toupper() on the given argument
155 * prior to comparison.
157 #define STRTOSZ_DEFSUFFIX_TB 'T'
158 #define STRTOSZ_DEFSUFFIX_GB 'G'
159 #define STRTOSZ_DEFSUFFIX_MB 'M'
160 #define STRTOSZ_DEFSUFFIX_KB 'K'
161 #define STRTOSZ_DEFSUFFIX_B 'B'
162 int64_t strtosz(const char *nptr, char **end);
163 int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
164 int64_t strtosz_suffix_unit(const char *nptr, char **end,
165 const char default_suffix, int64_t unit);
167 /* path.c */
168 void init_paths(const char *prefix);
169 const char *path(const char *pathname);
171 #define qemu_isalnum(c) isalnum((unsigned char)(c))
172 #define qemu_isalpha(c) isalpha((unsigned char)(c))
173 #define qemu_iscntrl(c) iscntrl((unsigned char)(c))
174 #define qemu_isdigit(c) isdigit((unsigned char)(c))
175 #define qemu_isgraph(c) isgraph((unsigned char)(c))
176 #define qemu_islower(c) islower((unsigned char)(c))
177 #define qemu_isprint(c) isprint((unsigned char)(c))
178 #define qemu_ispunct(c) ispunct((unsigned char)(c))
179 #define qemu_isspace(c) isspace((unsigned char)(c))
180 #define qemu_isupper(c) isupper((unsigned char)(c))
181 #define qemu_isxdigit(c) isxdigit((unsigned char)(c))
182 #define qemu_tolower(c) tolower((unsigned char)(c))
183 #define qemu_toupper(c) toupper((unsigned char)(c))
184 #define qemu_isascii(c) isascii((unsigned char)(c))
185 #define qemu_toascii(c) toascii((unsigned char)(c))
187 void *qemu_oom_check(void *ptr);
189 int qemu_open(const char *name, int flags, ...);
190 ssize_t qemu_write_full(int fd, const void *buf, size_t count)
191 QEMU_WARN_UNUSED_RESULT;
192 ssize_t qemu_send_full(int fd, const void *buf, size_t count, int flags)
193 QEMU_WARN_UNUSED_RESULT;
194 ssize_t qemu_recv_full(int fd, void *buf, size_t count, int flags)
195 QEMU_WARN_UNUSED_RESULT;
197 #ifndef _WIN32
198 int qemu_eventfd(int pipefd[2]);
199 int qemu_pipe(int pipefd[2]);
200 #endif
202 #ifdef _WIN32
203 #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
204 #else
205 #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
206 #endif
208 int qemu_recvv(int sockfd, struct iovec *iov, int len, int iov_offset);
209 int qemu_sendv(int sockfd, struct iovec *iov, int len, int iov_offset);
211 /* Error handling. */
213 void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
215 struct ParallelIOArg {
216 void *buffer;
217 int count;
220 typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
222 /* A load of opaque types so that device init declarations don't have to
223 pull in all the real definitions. */
224 typedef struct NICInfo NICInfo;
225 typedef struct HCIInfo HCIInfo;
226 typedef struct AudioState AudioState;
227 typedef struct BlockDriverState BlockDriverState;
228 typedef struct DriveInfo DriveInfo;
229 typedef struct DisplayState DisplayState;
230 typedef struct DisplayChangeListener DisplayChangeListener;
231 typedef struct DisplaySurface DisplaySurface;
232 typedef struct DisplayAllocator DisplayAllocator;
233 typedef struct PixelFormat PixelFormat;
234 typedef struct TextConsole TextConsole;
235 typedef TextConsole QEMUConsole;
236 typedef struct CharDriverState CharDriverState;
237 typedef struct MACAddr MACAddr;
238 typedef struct VLANState VLANState;
239 typedef struct VLANClientState VLANClientState;
240 typedef struct i2c_bus i2c_bus;
241 typedef struct ISABus ISABus;
242 typedef struct SMBusDevice SMBusDevice;
243 typedef struct PCIHostState PCIHostState;
244 typedef struct PCIExpressHost PCIExpressHost;
245 typedef struct PCIBus PCIBus;
246 typedef struct PCIDevice PCIDevice;
247 typedef struct PCIExpressDevice PCIExpressDevice;
248 typedef struct PCIBridge PCIBridge;
249 typedef struct PCIEAERMsg PCIEAERMsg;
250 typedef struct PCIEAERLog PCIEAERLog;
251 typedef struct PCIEAERErr PCIEAERErr;
252 typedef struct PCIEPort PCIEPort;
253 typedef struct PCIESlot PCIESlot;
254 typedef struct SerialState SerialState;
255 typedef struct IRQState *qemu_irq;
256 typedef struct PCMCIACardState PCMCIACardState;
257 typedef struct MouseTransformInfo MouseTransformInfo;
258 typedef struct uWireSlave uWireSlave;
259 typedef struct I2SCodec I2SCodec;
260 typedef struct SSIBus SSIBus;
261 typedef struct EventNotifier EventNotifier;
262 typedef struct VirtIODevice VirtIODevice;
263 typedef struct QEMUSGList QEMUSGList;
264 typedef struct SHPCDevice SHPCDevice;
266 typedef uint64_t pcibus_t;
268 typedef enum LostTickPolicy {
269 LOST_TICK_DISCARD,
270 LOST_TICK_DELAY,
271 LOST_TICK_MERGE,
272 LOST_TICK_SLEW,
273 LOST_TICK_MAX
274 } LostTickPolicy;
276 void tcg_exec_init(unsigned long tb_size);
277 bool tcg_enabled(void);
279 void cpu_exec_init_all(void);
281 /* CPU save/load. */
282 void cpu_save(QEMUFile *f, void *opaque);
283 int cpu_load(QEMUFile *f, void *opaque, int version_id);
285 /* Unblock cpu */
286 void qemu_cpu_kick(void *env);
287 void qemu_cpu_kick_self(void);
288 int qemu_cpu_is_self(void *env);
289 bool all_cpu_threads_idle(void);
291 /* work queue */
292 struct qemu_work_item {
293 struct qemu_work_item *next;
294 void (*func)(void *data);
295 void *data;
296 int done;
299 #ifdef CONFIG_USER_ONLY
300 #define qemu_init_vcpu(env) do { } while (0)
301 #else
302 void qemu_init_vcpu(void *env);
303 #endif
306 * Sends an iovec (or optionally a part of it) down a socket, yielding
307 * when the socket is full.
309 int qemu_co_sendv(int sockfd, struct iovec *iov,
310 int len, int iov_offset);
313 * Receives data into an iovec (or optionally into a part of it) from
314 * a socket, yielding when there is no data in the socket.
316 int qemu_co_recvv(int sockfd, struct iovec *iov,
317 int len, int iov_offset);
321 * Sends a buffer down a socket, yielding when the socket is full.
323 int qemu_co_send(int sockfd, void *buf, int len);
326 * Receives data into a buffer from a socket, yielding when there
327 * is no data in the socket.
329 int qemu_co_recv(int sockfd, void *buf, int len);
332 typedef struct QEMUIOVector {
333 struct iovec *iov;
334 int niov;
335 int nalloc;
336 size_t size;
337 } QEMUIOVector;
339 void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
340 void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
341 void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
342 void qemu_iovec_copy(QEMUIOVector *dst, QEMUIOVector *src, uint64_t skip,
343 size_t size);
344 void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
345 void qemu_iovec_destroy(QEMUIOVector *qiov);
346 void qemu_iovec_reset(QEMUIOVector *qiov);
347 void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
348 void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
349 void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
350 void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
351 size_t skip);
353 bool buffer_is_zero(const void *buf, size_t len);
355 void qemu_progress_init(int enabled, float min_skip);
356 void qemu_progress_end(void);
357 void qemu_progress_print(float delta, int max);
359 #define QEMU_FILE_TYPE_BIOS 0
360 #define QEMU_FILE_TYPE_KEYMAP 1
361 char *qemu_find_file(int type, const char *name);
363 /* OS specific functions */
364 void os_setup_early_signal_handling(void);
365 char *os_find_datadir(const char *argv0);
366 void os_parse_cmd_args(int index, const char *optarg);
367 void os_pidfile_error(void);
369 /* Convert a byte between binary and BCD. */
370 static inline uint8_t to_bcd(uint8_t val)
372 return ((val / 10) << 4) | (val % 10);
375 static inline uint8_t from_bcd(uint8_t val)
377 return ((val >> 4) * 10) + (val & 0x0f);
380 /* compute with 96 bit intermediate result: (a*b)/c */
381 static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
383 union {
384 uint64_t ll;
385 struct {
386 #ifdef HOST_WORDS_BIGENDIAN
387 uint32_t high, low;
388 #else
389 uint32_t low, high;
390 #endif
391 } l;
392 } u, res;
393 uint64_t rl, rh;
395 u.ll = a;
396 rl = (uint64_t)u.l.low * (uint64_t)b;
397 rh = (uint64_t)u.l.high * (uint64_t)b;
398 rh += (rl >> 32);
399 res.l.high = rh / c;
400 res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
401 return res.ll;
404 /* Round number down to multiple */
405 #define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m))
407 /* Round number up to multiple */
408 #define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))
410 #include "module.h"
412 #endif