qemu-common.h

   1 /* Common header file that is included by all of qemu.  */
   2 #ifndef QEMU_COMMON_H
   3 #define QEMU_COMMON_H
   4
   5 #include "compiler.h"
   6 #include "config-host.h"
   7
   8 #if defined(__arm__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__) || defined(__ia64__)
   9 #define WORDS_ALIGNED
  10 #endif
  11
  12 #define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
  13
  14 typedef struct QEMUTimer QEMUTimer;
  15 typedef struct QEMUFile QEMUFile;
  16 typedef struct QEMUBH QEMUBH;
  17 typedef struct DeviceState DeviceState;
  18
  19 struct Monitor;
  20 typedef struct Monitor Monitor;
  21
  22 /* we put basic includes here to avoid repeating them in device drivers */
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <stdarg.h>
  26 #include <stdbool.h>
  27 #include <string.h>
  28 #include <strings.h>
  29 #include <inttypes.h>
  30 #include <limits.h>
  31 #include <time.h>
  32 #include <ctype.h>
  33 #include <errno.h>
  34 #include <unistd.h>
  35 #include <fcntl.h>
  36 #include <sys/stat.h>
  37 #include <sys/time.h>
  38 #include <assert.h>
  39 #include <signal.h>
  40 #include <glib.h>
  41
  42 #ifdef _WIN32
  43 #include "qemu-os-win32.h"
  44 #endif
  45
  46 #ifdef CONFIG_POSIX
  47 #include "qemu-os-posix.h"
  48 #endif
  49
  50 #ifndef O_LARGEFILE
  51 #define O_LARGEFILE 0
  52 #endif
  53 #ifndef O_BINARY
  54 #define O_BINARY 0
  55 #endif
  56 #ifndef MAP_ANONYMOUS
  57 #define MAP_ANONYMOUS MAP_ANON
  58 #endif
  59 #ifndef ENOMEDIUM
  60 #define ENOMEDIUM ENODEV
  61 #endif
  62 #if !defined(ENOTSUP)
  63 #define ENOTSUP 4096
  64 #endif
  65 #ifndef TIME_MAX
  66 #define TIME_MAX LONG_MAX
  67 #endif
  68
  69 #ifndef CONFIG_IOVEC
  70 #define CONFIG_IOVEC
  71 struct iovec {
  72     void *iov_base;
  73     size_t iov_len;
  74 };
  75 /*
  76  * Use the same value as Linux for now.
  77  */
  78 #define IOV_MAX         1024
  79 #else
  80 #include <sys/uio.h>
  81 #endif
  82
  83 typedef int (*fprintf_function)(FILE *f, const char *fmt, ...)
  84     GCC_FMT_ATTR(2, 3);
  85
  86 #ifdef _WIN32
  87 #define fsync _commit
  88 #define lseek _lseeki64
  89 int qemu_ftruncate64(int, int64_t);
  90 #define ftruncate qemu_ftruncate64
  91
  92 static inline char *realpath(const char *path, char *resolved_path)
  93 {
  94     _fullpath(resolved_path, path, _MAX_PATH);
  95     return resolved_path;
  96 }
  97 #endif
  98
  99 /* FIXME: Remove NEED_CPU_H.  */
 100 #ifndef NEED_CPU_H
 101
 102 #include "osdep.h"
 103 #include "bswap.h"
 104
 105 #else
 106
 107 #include "cpu.h"
 108
 109 #endif /* !defined(NEED_CPU_H) */
 110
 111 /* main function, renamed */
 112 #if defined(CONFIG_COCOA)
 113 int qemu_main(int argc, char **argv, char **envp);
 114 #endif
 115
 116 /* bottom halves */
 117 typedef void QEMUBHFunc(void *opaque);
 118
 119 QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque);
 120 void qemu_bh_schedule(QEMUBH *bh);
 121 /* Bottom halfs that are scheduled from a bottom half handler are instantly
 122  * invoked.  This can create an infinite loop if a bottom half handler
 123  * schedules itself.  qemu_bh_schedule_idle() avoids this infinite loop by
 124  * ensuring that the bottom half isn't executed until the next main loop
 125  * iteration.
 126  */
 127 void qemu_bh_schedule_idle(QEMUBH *bh);
 128 void qemu_bh_cancel(QEMUBH *bh);
 129 void qemu_bh_delete(QEMUBH *bh);
 130 int qemu_bh_poll(void);
 131 void qemu_bh_update_timeout(int *timeout);
 132
 133 void qemu_get_timedate(struct tm *tm, int offset);
 134 int qemu_timedate_diff(struct tm *tm);
 135
 136 /* cutils.c */
 137 void pstrcpy(char *buf, int buf_size, const char *str);
 138 char *pstrcat(char *buf, int buf_size, const char *s);
 139 int strstart(const char *str, const char *val, const char **ptr);
 140 int stristart(const char *str, const char *val, const char **ptr);
 141 int qemu_strnlen(const char *s, int max_len);
 142 time_t mktimegm(struct tm *tm);
 143 int qemu_fls(int i);
 144 int qemu_fdatasync(int fd);
 145 int fcntl_setfl(int fd, int flag);
 146
 147 /*
 148  * strtosz() suffixes used to specify the default treatment of an
 149  * argument passed to strtosz() without an explicit suffix.
 150  * These should be defined using upper case characters in the range
 151  * A-Z, as strtosz() will use qemu_toupper() on the given argument
 152  * prior to comparison.
 153  */
 154 #define STRTOSZ_DEFSUFFIX_TB    'T'
 155 #define STRTOSZ_DEFSUFFIX_GB    'G'
 156 #define STRTOSZ_DEFSUFFIX_MB    'M'
 157 #define STRTOSZ_DEFSUFFIX_KB    'K'
 158 #define STRTOSZ_DEFSUFFIX_B     'B'
 159 int64_t strtosz(const char *nptr, char **end);
 160 int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
 161 int64_t strtosz_suffix_unit(const char *nptr, char **end,
 162                             const char default_suffix, int64_t unit);
 163
 164 /* path.c */
 165 void init_paths(const char *prefix);
 166 const char *path(const char *pathname);
 167
 168 #define qemu_isalnum(c)         isalnum((unsigned char)(c))
 169 #define qemu_isalpha(c)         isalpha((unsigned char)(c))
 170 #define qemu_iscntrl(c)         iscntrl((unsigned char)(c))
 171 #define qemu_isdigit(c)         isdigit((unsigned char)(c))
 172 #define qemu_isgraph(c)         isgraph((unsigned char)(c))
 173 #define qemu_islower(c)         islower((unsigned char)(c))
 174 #define qemu_isprint(c)         isprint((unsigned char)(c))
 175 #define qemu_ispunct(c)         ispunct((unsigned char)(c))
 176 #define qemu_isspace(c)         isspace((unsigned char)(c))
 177 #define qemu_isupper(c)         isupper((unsigned char)(c))
 178 #define qemu_isxdigit(c)        isxdigit((unsigned char)(c))
 179 #define qemu_tolower(c)         tolower((unsigned char)(c))
 180 #define qemu_toupper(c)         toupper((unsigned char)(c))
 181 #define qemu_isascii(c)         isascii((unsigned char)(c))
 182 #define qemu_toascii(c)         toascii((unsigned char)(c))
 183
 184 void *qemu_oom_check(void *ptr);
 185
 186 void qemu_mutex_lock_iothread(void);
 187 void qemu_mutex_unlock_iothread(void);
 188
 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 void qemu_set_cloexec(int fd);
 193
 194 #ifndef _WIN32
 195 int qemu_add_child_watch(pid_t pid);
 196 int qemu_eventfd(int pipefd[2]);
 197 int qemu_pipe(int pipefd[2]);
 198 #endif
 199
 200 #ifdef _WIN32
 201 #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
 202 #else
 203 #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
 204 #endif
 205
 206 /* Error handling.  */
 207
 208 void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
 209
 210 /* IO callbacks.  */
 211 typedef void IOReadHandler(void *opaque, const uint8_t *buf, int size);
 212 typedef int IOCanReadHandler(void *opaque);
 213 typedef void IOHandler(void *opaque);
 214
 215 void qemu_iohandler_fill(int *pnfds, fd_set *readfds, fd_set *writefds, fd_set *xfds);
 216 void qemu_iohandler_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds, int rc);
 217
 218 struct ParallelIOArg {
 219     void *buffer;
 220     int count;
 221 };
 222
 223 typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
 224
 225 /* A load of opaque types so that device init declarations don't have to
 226    pull in all the real definitions.  */
 227 typedef struct NICInfo NICInfo;
 228 typedef struct HCIInfo HCIInfo;
 229 typedef struct AudioState AudioState;
 230 typedef struct BlockDriverState BlockDriverState;
 231 typedef struct DriveInfo DriveInfo;
 232 typedef struct DisplayState DisplayState;
 233 typedef struct DisplayChangeListener DisplayChangeListener;
 234 typedef struct DisplaySurface DisplaySurface;
 235 typedef struct DisplayAllocator DisplayAllocator;
 236 typedef struct PixelFormat PixelFormat;
 237 typedef struct TextConsole TextConsole;
 238 typedef TextConsole QEMUConsole;
 239 typedef struct CharDriverState CharDriverState;
 240 typedef struct MACAddr MACAddr;
 241 typedef struct VLANState VLANState;
 242 typedef struct VLANClientState VLANClientState;
 243 typedef struct i2c_bus i2c_bus;
 244 typedef struct i2c_slave i2c_slave;
 245 typedef struct SMBusDevice SMBusDevice;
 246 typedef struct PCIHostState PCIHostState;
 247 typedef struct PCIExpressHost PCIExpressHost;
 248 typedef struct PCIBus PCIBus;
 249 typedef struct PCIDevice PCIDevice;
 250 typedef struct PCIExpressDevice PCIExpressDevice;
 251 typedef struct PCIBridge PCIBridge;
 252 typedef struct PCIEAERMsg PCIEAERMsg;
 253 typedef struct PCIEAERLog PCIEAERLog;
 254 typedef struct PCIEAERErr PCIEAERErr;
 255 typedef struct PCIEPort PCIEPort;
 256 typedef struct PCIESlot PCIESlot;
 257 typedef struct SerialState SerialState;
 258 typedef struct IRQState *qemu_irq;
 259 typedef struct PCMCIACardState PCMCIACardState;
 260 typedef struct MouseTransformInfo MouseTransformInfo;
 261 typedef struct uWireSlave uWireSlave;
 262 typedef struct I2SCodec I2SCodec;
 263 typedef struct SSIBus SSIBus;
 264 typedef struct EventNotifier EventNotifier;
 265 typedef struct VirtIODevice VirtIODevice;
 266 typedef struct QEMUSGList QEMUSGList;
 267
 268 typedef uint64_t pcibus_t;
 269
 270 void tcg_exec_init(unsigned long tb_size);
 271 bool tcg_enabled(void);
 272
 273 void cpu_exec_init_all(void);
 274
 275 /* CPU save/load.  */
 276 void cpu_save(QEMUFile *f, void *opaque);
 277 int cpu_load(QEMUFile *f, void *opaque, int version_id);
 278
 279 /* Force QEMU to process pending events */
 280 void qemu_notify_event(void);
 281
 282 /* Unblock cpu */
 283 void qemu_cpu_kick(void *env);
 284 void qemu_cpu_kick_self(void);
 285 int qemu_cpu_is_self(void *env);
 286 bool all_cpu_threads_idle(void);
 287
 288 /* work queue */
 289 struct qemu_work_item {
 290     struct qemu_work_item *next;
 291     void (*func)(void *data);
 292     void *data;
 293     int done;
 294 };
 295
 296 #ifdef CONFIG_USER_ONLY
 297 #define qemu_init_vcpu(env) do { } while (0)
 298 #else
 299 void qemu_init_vcpu(void *env);
 300 #endif
 301
 302 typedef struct QEMUIOVector {
 303     struct iovec *iov;
 304     int niov;
 305     int nalloc;
 306     size_t size;
 307 } QEMUIOVector;
 308
 309 void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
 310 void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
 311 void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
 312 void qemu_iovec_copy(QEMUIOVector *dst, QEMUIOVector *src, uint64_t skip,
 313     size_t size);
 314 void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
 315 void qemu_iovec_destroy(QEMUIOVector *qiov);
 316 void qemu_iovec_reset(QEMUIOVector *qiov);
 317 void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
 318 void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
 319 void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
 320 void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
 321                             size_t skip);
 322
 323 void qemu_progress_init(int enabled, float min_skip);
 324 void qemu_progress_end(void);
 325 void qemu_progress_print(float delta, int max);
 326
 327 #define QEMU_FILE_TYPE_BIOS   0
 328 #define QEMU_FILE_TYPE_KEYMAP 1
 329 char *qemu_find_file(int type, const char *name);
 330
 331 /* OS specific functions */
 332 void os_setup_early_signal_handling(void);
 333 char *os_find_datadir(const char *argv0);
 334 void os_parse_cmd_args(int index, const char *optarg);
 335 void os_pidfile_error(void);
 336
 337 /* Convert a byte between binary and BCD.  */
 338 static inline uint8_t to_bcd(uint8_t val)
 339 {
 340     return ((val / 10) << 4) | (val % 10);
 341 }
 342
 343 static inline uint8_t from_bcd(uint8_t val)
 344 {
 345     return ((val >> 4) * 10) + (val & 0x0f);
 346 }
 347
 348 /* compute with 96 bit intermediate result: (a*b)/c */
 349 static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
 350 {
 351     union {
 352         uint64_t ll;
 353         struct {
 354 #ifdef HOST_WORDS_BIGENDIAN
 355             uint32_t high, low;
 356 #else
 357             uint32_t low, high;
 358 #endif
 359         } l;
 360     } u, res;
 361     uint64_t rl, rh;
 362
 363     u.ll = a;
 364     rl = (uint64_t)u.l.low * (uint64_t)b;
 365     rh = (uint64_t)u.l.high * (uint64_t)b;
 366     rh += (rl >> 32);
 367     res.l.high = rh / c;
 368     res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
 369     return res.ll;
 370 }
 371
 372 #include "module.h"
 373
 374 #endif