Statistics
| Branch: | Revision:

root / qemu-common.h @ 6b837bc4

History | View | Annotate | Download (10.8 kB)

1
/* Common header file that is included by all of qemu.  */
2
#ifndef QEMU_COMMON_H
3
#define QEMU_COMMON_H
4

    
5
#include "config-host.h"
6

    
7
#define QEMU_NORETURN __attribute__ ((__noreturn__))
8
#ifdef CONFIG_GCC_ATTRIBUTE_WARN_UNUSED_RESULT
9
#define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
10
#else
11
#define QEMU_WARN_UNUSED_RESULT
12
#endif
13

    
14
#define QEMU_BUILD_BUG_ON(x) typedef char __build_bug_on__##__LINE__[(x)?-1:1];
15

    
16
typedef struct QEMUTimer QEMUTimer;
17
typedef struct QEMUFile QEMUFile;
18
typedef struct QEMUBH QEMUBH;
19
typedef struct DeviceState DeviceState;
20

    
21
struct Monitor;
22
typedef struct Monitor Monitor;
23

    
24
/* we put basic includes here to avoid repeating them in device drivers */
25
#include <stdlib.h>
26
#include <stdio.h>
27
#include <stdarg.h>
28
#include <stdbool.h>
29
#include <string.h>
30
#include <strings.h>
31
#include <inttypes.h>
32
#include <limits.h>
33
#include <time.h>
34
#include <ctype.h>
35
#include <errno.h>
36
#include <unistd.h>
37
#include <fcntl.h>
38
#include <sys/stat.h>
39
#include <sys/time.h>
40
#include <assert.h>
41

    
42
#ifndef O_LARGEFILE
43
#define O_LARGEFILE 0
44
#endif
45
#ifndef O_BINARY
46
#define O_BINARY 0
47
#endif
48
#ifndef MAP_ANONYMOUS
49
#define MAP_ANONYMOUS MAP_ANON
50
#endif
51
#ifndef ENOMEDIUM
52
#define ENOMEDIUM ENODEV
53
#endif
54
#if !defined(ENOTSUP)
55
#define ENOTSUP 4096
56
#endif
57
#ifndef TIME_MAX
58
#define TIME_MAX LONG_MAX
59
#endif
60

    
61
#ifndef CONFIG_IOVEC
62
#define CONFIG_IOVEC
63
struct iovec {
64
    void *iov_base;
65
    size_t iov_len;
66
};
67
/*
68
 * Use the same value as Linux for now.
69
 */
70
#define IOV_MAX                1024
71
#else
72
#include <sys/uio.h>
73
#endif
74

    
75
#if defined __GNUC__
76
# if (__GNUC__ < 4) || \
77
     defined(__GNUC_MINOR__) && (__GNUC__ == 4) && (__GNUC_MINOR__ < 4)
78
   /* gcc versions before 4.4.x don't support gnu_printf, so use printf. */
79
#  define GCC_ATTR __attribute__((__unused__, format(printf, 1, 2)))
80
#  define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
81
# else
82
   /* Use gnu_printf when supported (qemu uses standard format strings). */
83
#  define GCC_ATTR __attribute__((__unused__, format(gnu_printf, 1, 2)))
84
#  define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
85
# endif
86
#else
87
#define GCC_ATTR /**/
88
#define GCC_FMT_ATTR(n, m)
89
#endif
90

    
91
typedef int (*fprintf_function)(FILE *f, const char *fmt, ...)
92
    GCC_FMT_ATTR(2, 3);
93

    
94
#ifdef _WIN32
95
#define fsync _commit
96
#define lseek _lseeki64
97
int qemu_ftruncate64(int, int64_t);
98
#define ftruncate qemu_ftruncate64
99

    
100
static inline char *realpath(const char *path, char *resolved_path)
101
{
102
    _fullpath(resolved_path, path, _MAX_PATH);
103
    return resolved_path;
104
}
105

    
106
#define PRId64 "I64d"
107
#define PRIx64 "I64x"
108
#define PRIu64 "I64u"
109
#define PRIo64 "I64o"
110
#endif
111

    
112
/* FIXME: Remove NEED_CPU_H.  */
113
#ifndef NEED_CPU_H
114

    
115
#include <setjmp.h>
116
#include "osdep.h"
117
#include "bswap.h"
118

    
119
#else
120

    
121
#include "cpu.h"
122

    
123
#endif /* !defined(NEED_CPU_H) */
124

    
125
/* bottom halves */
126
typedef void QEMUBHFunc(void *opaque);
127

    
128
void async_context_push(void);
129
void async_context_pop(void);
130
int get_async_context_id(void);
131

    
132
QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque);
133
void qemu_bh_schedule(QEMUBH *bh);
134
/* Bottom halfs that are scheduled from a bottom half handler are instantly
135
 * invoked.  This can create an infinite loop if a bottom half handler
136
 * schedules itself.  qemu_bh_schedule_idle() avoids this infinite loop by
137
 * ensuring that the bottom half isn't executed until the next main loop
138
 * iteration.
139
 */
140
void qemu_bh_schedule_idle(QEMUBH *bh);
141
void qemu_bh_cancel(QEMUBH *bh);
142
void qemu_bh_delete(QEMUBH *bh);
143
int qemu_bh_poll(void);
144
void qemu_bh_update_timeout(int *timeout);
145

    
146
void qemu_get_timedate(struct tm *tm, int offset);
147
int qemu_timedate_diff(struct tm *tm);
148

    
149
/* cutils.c */
150
void pstrcpy(char *buf, int buf_size, const char *str);
151
char *pstrcat(char *buf, int buf_size, const char *s);
152
int strstart(const char *str, const char *val, const char **ptr);
153
int stristart(const char *str, const char *val, const char **ptr);
154
int qemu_strnlen(const char *s, int max_len);
155
time_t mktimegm(struct tm *tm);
156
int qemu_fls(int i);
157
int qemu_fdatasync(int fd);
158
int fcntl_setfl(int fd, int flag);
159

    
160
/*
161
 * strtosz() suffixes used to specify the default treatment of an
162
 * argument passed to strtosz() without an explicit suffix.
163
 * These should be defined using upper case characters in the range
164
 * A-Z, as strtosz() will use qemu_toupper() on the given argument
165
 * prior to comparison.
166
 */
167
#define STRTOSZ_DEFSUFFIX_TB        'T'
168
#define STRTOSZ_DEFSUFFIX_GB        'G'
169
#define STRTOSZ_DEFSUFFIX_MB        'M'
170
#define STRTOSZ_DEFSUFFIX_KB        'K'
171
#define STRTOSZ_DEFSUFFIX_B        'B'
172
int64_t strtosz(const char *nptr, char **end);
173
int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
174

    
175
/* path.c */
176
void init_paths(const char *prefix);
177
const char *path(const char *pathname);
178

    
179
#define qemu_isalnum(c)                isalnum((unsigned char)(c))
180
#define qemu_isalpha(c)                isalpha((unsigned char)(c))
181
#define qemu_iscntrl(c)                iscntrl((unsigned char)(c))
182
#define qemu_isdigit(c)                isdigit((unsigned char)(c))
183
#define qemu_isgraph(c)                isgraph((unsigned char)(c))
184
#define qemu_islower(c)                islower((unsigned char)(c))
185
#define qemu_isprint(c)                isprint((unsigned char)(c))
186
#define qemu_ispunct(c)                ispunct((unsigned char)(c))
187
#define qemu_isspace(c)                isspace((unsigned char)(c))
188
#define qemu_isupper(c)                isupper((unsigned char)(c))
189
#define qemu_isxdigit(c)        isxdigit((unsigned char)(c))
190
#define qemu_tolower(c)                tolower((unsigned char)(c))
191
#define qemu_toupper(c)                toupper((unsigned char)(c))
192
#define qemu_isascii(c)                isascii((unsigned char)(c))
193
#define qemu_toascii(c)                toascii((unsigned char)(c))
194

    
195
#ifdef _WIN32
196
/* ffs() in oslib-win32.c for WIN32, strings.h for the rest of the world */
197
int ffs(int i);
198
#endif
199

    
200
void *qemu_oom_check(void *ptr);
201
void *qemu_malloc(size_t size);
202
void *qemu_realloc(void *ptr, size_t size);
203
void *qemu_mallocz(size_t size);
204
void qemu_free(void *ptr);
205
char *qemu_strdup(const char *str);
206
char *qemu_strndup(const char *str, size_t size);
207

    
208
void qemu_mutex_lock_iothread(void);
209
void qemu_mutex_unlock_iothread(void);
210

    
211
int qemu_open(const char *name, int flags, ...);
212
ssize_t qemu_write_full(int fd, const void *buf, size_t count)
213
    QEMU_WARN_UNUSED_RESULT;
214
void qemu_set_cloexec(int fd);
215

    
216
#ifndef _WIN32
217
int qemu_add_child_watch(pid_t pid);
218
int qemu_eventfd(int pipefd[2]);
219
int qemu_pipe(int pipefd[2]);
220
#endif
221

    
222
/* Error handling.  */
223

    
224
void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
225

    
226
/* IO callbacks.  */
227
typedef void IOReadHandler(void *opaque, const uint8_t *buf, int size);
228
typedef int IOCanReadHandler(void *opaque);
229
typedef void IOHandler(void *opaque);
230

    
231
void qemu_iohandler_fill(int *pnfds, fd_set *readfds, fd_set *writefds, fd_set *xfds);
232
void qemu_iohandler_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds, int rc);
233

    
234
struct ParallelIOArg {
235
    void *buffer;
236
    int count;
237
};
238

    
239
typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
240

    
241
/* A load of opaque types so that device init declarations don't have to
242
   pull in all the real definitions.  */
243
typedef struct NICInfo NICInfo;
244
typedef struct HCIInfo HCIInfo;
245
typedef struct AudioState AudioState;
246
typedef struct BlockDriverState BlockDriverState;
247
typedef struct DriveInfo DriveInfo;
248
typedef struct DisplayState DisplayState;
249
typedef struct DisplayChangeListener DisplayChangeListener;
250
typedef struct DisplaySurface DisplaySurface;
251
typedef struct DisplayAllocator DisplayAllocator;
252
typedef struct PixelFormat PixelFormat;
253
typedef struct TextConsole TextConsole;
254
typedef TextConsole QEMUConsole;
255
typedef struct CharDriverState CharDriverState;
256
typedef struct MACAddr MACAddr;
257
typedef struct VLANState VLANState;
258
typedef struct VLANClientState VLANClientState;
259
typedef struct i2c_bus i2c_bus;
260
typedef struct i2c_slave i2c_slave;
261
typedef struct SMBusDevice SMBusDevice;
262
typedef struct PCIHostState PCIHostState;
263
typedef struct PCIExpressHost PCIExpressHost;
264
typedef struct PCIBus PCIBus;
265
typedef struct PCIDevice PCIDevice;
266
typedef struct PCIExpressDevice PCIExpressDevice;
267
typedef struct PCIBridge PCIBridge;
268
typedef struct PCIEAERMsg PCIEAERMsg;
269
typedef struct PCIEAERLog PCIEAERLog;
270
typedef struct PCIEAERErr PCIEAERErr;
271
typedef struct PCIEPort PCIEPort;
272
typedef struct PCIESlot PCIESlot;
273
typedef struct SerialState SerialState;
274
typedef struct IRQState *qemu_irq;
275
typedef struct PCMCIACardState PCMCIACardState;
276
typedef struct MouseTransformInfo MouseTransformInfo;
277
typedef struct uWireSlave uWireSlave;
278
typedef struct I2SCodec I2SCodec;
279
typedef struct SSIBus SSIBus;
280
typedef struct EventNotifier EventNotifier;
281
typedef struct VirtIODevice VirtIODevice;
282

    
283
typedef uint64_t pcibus_t;
284

    
285
void cpu_exec_init_all(unsigned long tb_size);
286

    
287
/* CPU save/load.  */
288
void cpu_save(QEMUFile *f, void *opaque);
289
int cpu_load(QEMUFile *f, void *opaque, int version_id);
290

    
291
/* Force QEMU to stop what it's doing and service IO */
292
void qemu_service_io(void);
293

    
294
/* Force QEMU to process pending events */
295
void qemu_notify_event(void);
296

    
297
/* Unblock cpu */
298
void qemu_cpu_kick(void *env);
299
void qemu_cpu_kick_self(void);
300
int qemu_cpu_is_self(void *env);
301

    
302
/* work queue */
303
struct qemu_work_item {
304
    struct qemu_work_item *next;
305
    void (*func)(void *data);
306
    void *data;
307
    int done;
308
};
309

    
310
#ifdef CONFIG_USER_ONLY
311
#define qemu_init_vcpu(env) do { } while (0)
312
#else
313
void qemu_init_vcpu(void *env);
314
#endif
315

    
316
typedef struct QEMUIOVector {
317
    struct iovec *iov;
318
    int niov;
319
    int nalloc;
320
    size_t size;
321
} QEMUIOVector;
322

    
323
void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
324
void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
325
void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
326
void qemu_iovec_copy(QEMUIOVector *dst, QEMUIOVector *src, uint64_t skip,
327
    size_t size);
328
void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
329
void qemu_iovec_destroy(QEMUIOVector *qiov);
330
void qemu_iovec_reset(QEMUIOVector *qiov);
331
void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
332
void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
333
void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
334
void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
335
                            size_t skip);
336

    
337
void qemu_progress_init(int enabled, float min_skip);
338
void qemu_progress_end(void);
339
void qemu_progress_print(float percent, int max);
340

    
341
/* Convert a byte between binary and BCD.  */
342
static inline uint8_t to_bcd(uint8_t val)
343
{
344
    return ((val / 10) << 4) | (val % 10);
345
}
346

    
347
static inline uint8_t from_bcd(uint8_t val)
348
{
349
    return ((val >> 4) * 10) + (val & 0x0f);
350
}
351

    
352
/* compute with 96 bit intermediate result: (a*b)/c */
353
static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
354
{
355
    union {
356
        uint64_t ll;
357
        struct {
358
#ifdef HOST_WORDS_BIGENDIAN
359
            uint32_t high, low;
360
#else
361
            uint32_t low, high;
362
#endif
363
        } l;
364
    } u, res;
365
    uint64_t rl, rh;
366

    
367
    u.ll = a;
368
    rl = (uint64_t)u.l.low * (uint64_t)b;
369
    rh = (uint64_t)u.l.high * (uint64_t)b;
370
    rh += (rl >> 32);
371
    res.l.high = rh / c;
372
    res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
373
    return res.ll;
374
}
375

    
376
#include "module.h"
377

    
378
#endif