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1 | ||
2 | /* Common header file that is included by all of qemu. */ | |
3 | #ifndef QEMU_COMMON_H | |
4 | #define QEMU_COMMON_H | |
5 | ||
6 | #include "compiler.h" | |
7 | #include "config-host.h" | |
8 | ||
9 | #if defined(__arm__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__) || defined(__ia64__) | |
10 | #define WORDS_ALIGNED | |
11 | #endif | |
12 | ||
13 | #define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR) | |
14 | ||
15 | typedef struct QEMUTimer QEMUTimer; | |
16 | typedef struct QEMUFile QEMUFile; | |
17 | typedef struct DeviceState DeviceState; | |
18 | ||
19 | struct Monitor; | |
20 | typedef struct Monitor Monitor; | |
21 | typedef struct MigrationParams MigrationParams; | |
22 | ||
23 | /* we put basic includes here to avoid repeating them in device drivers */ | |
24 | #include <stdlib.h> | |
25 | #include <stdio.h> | |
26 | #include <stdarg.h> | |
27 | #include <stdbool.h> | |
28 | #include <string.h> | |
29 | #include <strings.h> | |
30 | #include <inttypes.h> | |
31 | #include <limits.h> | |
32 | #include <time.h> | |
33 | #include <ctype.h> | |
34 | #include <errno.h> | |
35 | #include <unistd.h> | |
36 | #include <fcntl.h> | |
37 | #include <sys/stat.h> | |
38 | #include <sys/time.h> | |
39 | #include <assert.h> | |
40 | #include <signal.h> | |
41 | #include <glib.h> | |
42 | ||
43 | #ifdef _WIN32 | |
44 | #include "qemu-os-win32.h" | |
45 | #endif | |
46 | ||
47 | #ifdef CONFIG_POSIX | |
48 | #include "qemu-os-posix.h" | |
49 | #endif | |
50 | ||
51 | #ifndef O_LARGEFILE | |
52 | #define O_LARGEFILE 0 | |
53 | #endif | |
54 | #ifndef O_BINARY | |
55 | #define O_BINARY 0 | |
56 | #endif | |
57 | #ifndef MAP_ANONYMOUS | |
58 | #define MAP_ANONYMOUS MAP_ANON | |
59 | #endif | |
60 | #ifndef ENOMEDIUM | |
61 | #define ENOMEDIUM ENODEV | |
62 | #endif | |
63 | #if !defined(ENOTSUP) | |
64 | #define ENOTSUP 4096 | |
65 | #endif | |
66 | #if !defined(ECANCELED) | |
67 | #define ECANCELED 4097 | |
68 | #endif | |
69 | #ifndef TIME_MAX | |
70 | #define TIME_MAX LONG_MAX | |
71 | #endif | |
72 | ||
73 | /* HOST_LONG_BITS is the size of a native pointer in bits. */ | |
74 | #if UINTPTR_MAX == UINT32_MAX | |
75 | # define HOST_LONG_BITS 32 | |
76 | #elif UINTPTR_MAX == UINT64_MAX | |
77 | # define HOST_LONG_BITS 64 | |
78 | #else | |
79 | # error Unknown pointer size | |
80 | #endif | |
81 | ||
82 | #ifndef CONFIG_IOVEC | |
83 | #define CONFIG_IOVEC | |
84 | struct iovec { | |
85 | void *iov_base; | |
86 | size_t iov_len; | |
87 | }; | |
88 | /* | |
89 | * Use the same value as Linux for now. | |
90 | */ | |
91 | #define IOV_MAX 1024 | |
92 | #else | |
93 | #include <sys/uio.h> | |
94 | #endif | |
95 | ||
96 | typedef int (*fprintf_function)(FILE *f, const char *fmt, ...) | |
97 | GCC_FMT_ATTR(2, 3); | |
98 | ||
99 | #ifdef _WIN32 | |
100 | #define fsync _commit | |
101 | #if !defined(lseek) | |
102 | # define lseek _lseeki64 | |
103 | #endif | |
104 | int qemu_ftruncate64(int, int64_t); | |
105 | #if !defined(ftruncate) | |
106 | # define ftruncate qemu_ftruncate64 | |
107 | #endif | |
108 | ||
109 | static inline char *realpath(const char *path, char *resolved_path) | |
110 | { | |
111 | _fullpath(resolved_path, path, _MAX_PATH); | |
112 | return resolved_path; | |
113 | } | |
114 | #endif | |
115 | ||
116 | /* icount */ | |
117 | void configure_icount(const char *option); | |
118 | extern int use_icount; | |
119 | ||
120 | /* FIXME: Remove NEED_CPU_H. */ | |
121 | #ifndef NEED_CPU_H | |
122 | ||
123 | #include "osdep.h" | |
124 | #include "bswap.h" | |
125 | ||
126 | #else | |
127 | ||
128 | #include "cpu.h" | |
129 | ||
130 | #endif /* !defined(NEED_CPU_H) */ | |
131 | ||
132 | /* main function, renamed */ | |
133 | #if defined(CONFIG_COCOA) | |
134 | int qemu_main(int argc, char **argv, char **envp); | |
135 | #endif | |
136 | ||
137 | void qemu_get_timedate(struct tm *tm, int offset); | |
138 | int qemu_timedate_diff(struct tm *tm); | |
139 | ||
140 | /** | |
141 | * is_help_option: | |
142 | * @s: string to test | |
143 | * | |
144 | * Check whether @s is one of the standard strings which indicate | |
145 | * that the user is asking for a list of the valid values for a | |
146 | * command option like -cpu or -M. The current accepted strings | |
147 | * are 'help' and '?'. '?' is deprecated (it is a shell wildcard | |
148 | * which makes it annoying to use in a reliable way) but provided | |
149 | * for backwards compatibility. | |
150 | * | |
151 | * Returns: true if @s is a request for a list. | |
152 | */ | |
153 | static inline bool is_help_option(const char *s) | |
154 | { | |
155 | return !strcmp(s, "?") || !strcmp(s, "help"); | |
156 | } | |
157 | ||
158 | /* cutils.c */ | |
159 | void pstrcpy(char *buf, int buf_size, const char *str); | |
160 | void strpadcpy(char *buf, int buf_size, const char *str, char pad); | |
161 | char *pstrcat(char *buf, int buf_size, const char *s); | |
162 | int strstart(const char *str, const char *val, const char **ptr); | |
163 | int stristart(const char *str, const char *val, const char **ptr); | |
164 | int qemu_strnlen(const char *s, int max_len); | |
165 | time_t mktimegm(struct tm *tm); | |
166 | int qemu_fls(int i); | |
167 | int qemu_fdatasync(int fd); | |
168 | int fcntl_setfl(int fd, int flag); | |
169 | int qemu_parse_fd(const char *param); | |
170 | int qemu_parse_fdset(const char *param); | |
171 | ||
172 | /* | |
173 | * strtosz() suffixes used to specify the default treatment of an | |
174 | * argument passed to strtosz() without an explicit suffix. | |
175 | * These should be defined using upper case characters in the range | |
176 | * A-Z, as strtosz() will use qemu_toupper() on the given argument | |
177 | * prior to comparison. | |
178 | */ | |
179 | #define STRTOSZ_DEFSUFFIX_TB 'T' | |
180 | #define STRTOSZ_DEFSUFFIX_GB 'G' | |
181 | #define STRTOSZ_DEFSUFFIX_MB 'M' | |
182 | #define STRTOSZ_DEFSUFFIX_KB 'K' | |
183 | #define STRTOSZ_DEFSUFFIX_B 'B' | |
184 | int64_t strtosz(const char *nptr, char **end); | |
185 | int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix); | |
186 | int64_t strtosz_suffix_unit(const char *nptr, char **end, | |
187 | const char default_suffix, int64_t unit); | |
188 | ||
189 | /* path.c */ | |
190 | void init_paths(const char *prefix); | |
191 | const char *path(const char *pathname); | |
192 | ||
193 | #define qemu_isalnum(c) isalnum((unsigned char)(c)) | |
194 | #define qemu_isalpha(c) isalpha((unsigned char)(c)) | |
195 | #define qemu_iscntrl(c) iscntrl((unsigned char)(c)) | |
196 | #define qemu_isdigit(c) isdigit((unsigned char)(c)) | |
197 | #define qemu_isgraph(c) isgraph((unsigned char)(c)) | |
198 | #define qemu_islower(c) islower((unsigned char)(c)) | |
199 | #define qemu_isprint(c) isprint((unsigned char)(c)) | |
200 | #define qemu_ispunct(c) ispunct((unsigned char)(c)) | |
201 | #define qemu_isspace(c) isspace((unsigned char)(c)) | |
202 | #define qemu_isupper(c) isupper((unsigned char)(c)) | |
203 | #define qemu_isxdigit(c) isxdigit((unsigned char)(c)) | |
204 | #define qemu_tolower(c) tolower((unsigned char)(c)) | |
205 | #define qemu_toupper(c) toupper((unsigned char)(c)) | |
206 | #define qemu_isascii(c) isascii((unsigned char)(c)) | |
207 | #define qemu_toascii(c) toascii((unsigned char)(c)) | |
208 | ||
209 | void *qemu_oom_check(void *ptr); | |
210 | ||
211 | int qemu_open(const char *name, int flags, ...); | |
212 | int qemu_close(int fd); | |
213 | ssize_t qemu_write_full(int fd, const void *buf, size_t count) | |
214 | QEMU_WARN_UNUSED_RESULT; | |
215 | ssize_t qemu_send_full(int fd, const void *buf, size_t count, int flags) | |
216 | QEMU_WARN_UNUSED_RESULT; | |
217 | ssize_t qemu_recv_full(int fd, void *buf, size_t count, int flags) | |
218 | QEMU_WARN_UNUSED_RESULT; | |
219 | ||
220 | #ifndef _WIN32 | |
221 | int qemu_eventfd(int pipefd[2]); | |
222 | int qemu_pipe(int pipefd[2]); | |
223 | #endif | |
224 | ||
225 | #ifdef _WIN32 | |
226 | #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags) | |
227 | #else | |
228 | #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags) | |
229 | #endif | |
230 | ||
231 | /* Error handling. */ | |
232 | ||
233 | void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2); | |
234 | ||
235 | struct ParallelIOArg { | |
236 | void *buffer; | |
237 | int count; | |
238 | }; | |
239 | ||
240 | typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size); | |
241 | ||
242 | /* A load of opaque types so that device init declarations don't have to | |
243 | pull in all the real definitions. */ | |
244 | typedef struct NICInfo NICInfo; | |
245 | typedef struct HCIInfo HCIInfo; | |
246 | typedef struct AudioState AudioState; | |
247 | typedef struct BlockDriverState BlockDriverState; | |
248 | typedef struct DriveInfo DriveInfo; | |
249 | typedef struct DisplayState DisplayState; | |
250 | typedef struct DisplayChangeListener DisplayChangeListener; | |
251 | typedef struct DisplaySurface DisplaySurface; | |
252 | typedef struct DisplayAllocator DisplayAllocator; | |
253 | typedef struct PixelFormat PixelFormat; | |
254 | typedef struct TextConsole TextConsole; | |
255 | typedef TextConsole QEMUConsole; | |
256 | typedef struct CharDriverState CharDriverState; | |
257 | typedef struct MACAddr MACAddr; | |
258 | typedef struct NetClientState NetClientState; | |
259 | typedef struct i2c_bus i2c_bus; | |
260 | typedef struct ISABus ISABus; | |
261 | typedef struct ISADevice ISADevice; | |
262 | typedef struct SMBusDevice SMBusDevice; | |
263 | typedef struct PCIHostState PCIHostState; | |
264 | typedef struct PCIExpressHost PCIExpressHost; | |
265 | typedef struct PCIBus PCIBus; | |
266 | typedef struct PCIDevice PCIDevice; | |
267 | typedef struct PCIExpressDevice PCIExpressDevice; | |
268 | typedef struct PCIBridge PCIBridge; | |
269 | typedef struct PCIEAERMsg PCIEAERMsg; | |
270 | typedef struct PCIEAERLog PCIEAERLog; | |
271 | typedef struct PCIEAERErr PCIEAERErr; | |
272 | typedef struct PCIEPort PCIEPort; | |
273 | typedef struct PCIESlot PCIESlot; | |
274 | typedef struct MSIMessage MSIMessage; | |
275 | typedef struct SerialState SerialState; | |
276 | typedef struct IRQState *qemu_irq; | |
277 | typedef struct PCMCIACardState PCMCIACardState; | |
278 | typedef struct MouseTransformInfo MouseTransformInfo; | |
279 | typedef struct uWireSlave uWireSlave; | |
280 | typedef struct I2SCodec I2SCodec; | |
281 | typedef struct SSIBus SSIBus; | |
282 | typedef struct EventNotifier EventNotifier; | |
283 | typedef struct VirtIODevice VirtIODevice; | |
284 | typedef struct QEMUSGList QEMUSGList; | |
285 | typedef struct SHPCDevice SHPCDevice; | |
286 | ||
287 | typedef uint64_t pcibus_t; | |
288 | ||
289 | typedef enum LostTickPolicy { | |
290 | LOST_TICK_DISCARD, | |
291 | LOST_TICK_DELAY, | |
292 | LOST_TICK_MERGE, | |
293 | LOST_TICK_SLEW, | |
294 | LOST_TICK_MAX | |
295 | } LostTickPolicy; | |
296 | ||
297 | typedef struct PCIHostDeviceAddress { | |
298 | unsigned int domain; | |
299 | unsigned int bus; | |
300 | unsigned int slot; | |
301 | unsigned int function; | |
302 | } PCIHostDeviceAddress; | |
303 | ||
304 | void tcg_exec_init(unsigned long tb_size); | |
305 | bool tcg_enabled(void); | |
306 | ||
307 | void cpu_exec_init_all(void); | |
308 | ||
309 | /* CPU save/load. */ | |
310 | void cpu_save(QEMUFile *f, void *opaque); | |
311 | int cpu_load(QEMUFile *f, void *opaque, int version_id); | |
312 | ||
313 | /* Unblock cpu */ | |
314 | void qemu_cpu_kick(void *env); | |
315 | void qemu_cpu_kick_self(void); | |
316 | int qemu_cpu_is_self(void *env); | |
317 | ||
318 | /* work queue */ | |
319 | struct qemu_work_item { | |
320 | struct qemu_work_item *next; | |
321 | void (*func)(void *data); | |
322 | void *data; | |
323 | int done; | |
324 | }; | |
325 | ||
326 | #ifdef CONFIG_USER_ONLY | |
327 | #define qemu_init_vcpu(env) do { } while (0) | |
328 | #else | |
329 | void qemu_init_vcpu(void *env); | |
330 | #endif | |
331 | ||
332 | ||
333 | /** | |
334 | * Sends a (part of) iovec down a socket, yielding when the socket is full, or | |
335 | * Receives data into a (part of) iovec from a socket, | |
336 | * yielding when there is no data in the socket. | |
337 | * The same interface as qemu_sendv_recvv(), with added yielding. | |
338 | * XXX should mark these as coroutine_fn | |
339 | */ | |
340 | ssize_t qemu_co_sendv_recvv(int sockfd, struct iovec *iov, unsigned iov_cnt, | |
341 | size_t offset, size_t bytes, bool do_send); | |
342 | #define qemu_co_recvv(sockfd, iov, iov_cnt, offset, bytes) \ | |
343 | qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, false) | |
344 | #define qemu_co_sendv(sockfd, iov, iov_cnt, offset, bytes) \ | |
345 | qemu_co_sendv_recvv(sockfd, iov, iov_cnt, offset, bytes, true) | |
346 | ||
347 | /** | |
348 | * The same as above, but with just a single buffer | |
349 | */ | |
350 | ssize_t qemu_co_send_recv(int sockfd, void *buf, size_t bytes, bool do_send); | |
351 | #define qemu_co_recv(sockfd, buf, bytes) \ | |
352 | qemu_co_send_recv(sockfd, buf, bytes, false) | |
353 | #define qemu_co_send(sockfd, buf, bytes) \ | |
354 | qemu_co_send_recv(sockfd, buf, bytes, true) | |
355 | ||
356 | typedef struct QEMUIOVector { | |
357 | struct iovec *iov; | |
358 | int niov; | |
359 | int nalloc; | |
360 | size_t size; | |
361 | } QEMUIOVector; | |
362 | ||
363 | void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint); | |
364 | void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov); | |
365 | void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len); | |
366 | void qemu_iovec_concat(QEMUIOVector *dst, | |
367 | QEMUIOVector *src, size_t soffset, size_t sbytes); | |
368 | void qemu_iovec_destroy(QEMUIOVector *qiov); | |
369 | void qemu_iovec_reset(QEMUIOVector *qiov); | |
370 | size_t qemu_iovec_to_buf(QEMUIOVector *qiov, size_t offset, | |
371 | void *buf, size_t bytes); | |
372 | size_t qemu_iovec_from_buf(QEMUIOVector *qiov, size_t offset, | |
373 | const void *buf, size_t bytes); | |
374 | size_t qemu_iovec_memset(QEMUIOVector *qiov, size_t offset, | |
375 | int fillc, size_t bytes); | |
376 | ||
377 | bool buffer_is_zero(const void *buf, size_t len); | |
378 | ||
379 | void qemu_progress_init(int enabled, float min_skip); | |
380 | void qemu_progress_end(void); | |
381 | void qemu_progress_print(float delta, int max); | |
382 | const char *qemu_get_vm_name(void); | |
383 | ||
384 | #define QEMU_FILE_TYPE_BIOS 0 | |
385 | #define QEMU_FILE_TYPE_KEYMAP 1 | |
386 | char *qemu_find_file(int type, const char *name); | |
387 | ||
388 | /* OS specific functions */ | |
389 | void os_setup_early_signal_handling(void); | |
390 | char *os_find_datadir(const char *argv0); | |
391 | void os_parse_cmd_args(int index, const char *optarg); | |
392 | void os_pidfile_error(void); | |
393 | ||
394 | /* Convert a byte between binary and BCD. */ | |
395 | static inline uint8_t to_bcd(uint8_t val) | |
396 | { | |
397 | return ((val / 10) << 4) | (val % 10); | |
398 | } | |
399 | ||
400 | static inline uint8_t from_bcd(uint8_t val) | |
401 | { | |
402 | return ((val >> 4) * 10) + (val & 0x0f); | |
403 | } | |
404 | ||
405 | /* compute with 96 bit intermediate result: (a*b)/c */ | |
406 | static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c) | |
407 | { | |
408 | union { | |
409 | uint64_t ll; | |
410 | struct { | |
411 | #ifdef HOST_WORDS_BIGENDIAN | |
412 | uint32_t high, low; | |
413 | #else | |
414 | uint32_t low, high; | |
415 | #endif | |
416 | } l; | |
417 | } u, res; | |
418 | uint64_t rl, rh; | |
419 | ||
420 | u.ll = a; | |
421 | rl = (uint64_t)u.l.low * (uint64_t)b; | |
422 | rh = (uint64_t)u.l.high * (uint64_t)b; | |
423 | rh += (rl >> 32); | |
424 | res.l.high = rh / c; | |
425 | res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c; | |
426 | return res.ll; | |
427 | } | |
428 | ||
429 | /* Round number down to multiple */ | |
430 | #define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m)) | |
431 | ||
432 | /* Round number up to multiple */ | |
433 | #define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m)) | |
434 | ||
435 | static inline bool is_power_of_2(uint64_t value) | |
436 | { | |
437 | if (!value) { | |
438 | return 0; | |
439 | } | |
440 | ||
441 | return !(value & (value - 1)); | |
442 | } | |
443 | ||
444 | /* round down to the nearest power of 2*/ | |
445 | int64_t pow2floor(int64_t value); | |
446 | ||
447 | #include "module.h" | |
448 | ||
449 | /* | |
450 | * Implementation of ULEB128 (http://en.wikipedia.org/wiki/LEB128) | |
451 | * Input is limited to 14-bit numbers | |
452 | */ | |
453 | ||
454 | int uleb128_encode_small(uint8_t *out, uint32_t n); | |
455 | int uleb128_decode_small(const uint8_t *in, uint32_t *n); | |
456 | ||
457 | #endif |