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 DeviceState DeviceState;
  17
  18 struct Monitor;
  19 typedef struct Monitor Monitor;
  20
  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>
  40
  41 #ifdef _WIN32
  42 #include "qemu-os-win32.h"
  43 #endif
  44
  45 #ifdef CONFIG_POSIX
  46 #include "qemu-os-posix.h"
  47 #endif
  48
  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 #ifndef TIME_MAX
  65 #define TIME_MAX LONG_MAX
  66 #endif
  67
  68 #ifndef CONFIG_IOVEC
  69 #define CONFIG_IOVEC
  70 struct iovec {
  71     void *iov_base;
  72     size_t iov_len;
  73 };
  74 /*
  75  * Use the same value as Linux for now.
  76  */
  77 #define IOV_MAX         1024
  78 #else
  79 #include <sys/uio.h>
  80 #endif
  81
  82 typedef int (*fprintf_function)(FILE *f, const char *fmt, ...)
  83     GCC_FMT_ATTR(2, 3);
  84
  85 #ifdef _WIN32
  86 #define fsync _commit
  87 #define lseek _lseeki64
  88 int qemu_ftruncate64(int, int64_t);
  89 #define ftruncate qemu_ftruncate64
  90
  91 static inline char *realpath(const char *path, char *resolved_path)
  92 {
  93     _fullpath(resolved_path, path, _MAX_PATH);
  94     return resolved_path;
  95 }
  96 #endif
  97
  98 /* icount */
  99 void configure_icount(const char *option);
 100 extern int use_icount;
 101
 102 /* FIXME: Remove NEED_CPU_H.  */
 103 #ifndef NEED_CPU_H
 104
 105 #include "osdep.h"
 106 #include "bswap.h"
 107
 108 #else
 109
 110 #include "cpu.h"
 111
 112 #endif /* !defined(NEED_CPU_H) */
 113
 114 /* main function, renamed */
 115 #if defined(CONFIG_COCOA)
 116 int qemu_main(int argc, char **argv, char **envp);
 117 #endif
 118
 119 void qemu_get_timedate(struct tm *tm, int offset);
 120 int qemu_timedate_diff(struct tm *tm);
 121
 122 /* cutils.c */
 123 void pstrcpy(char *buf, int buf_size, const char *str);
 124 char *pstrcat(char *buf, int buf_size, const char *s);
 125 int strstart(const char *str, const char *val, const char **ptr);
 126 int stristart(const char *str, const char *val, const char **ptr);
 127 int qemu_strnlen(const char *s, int max_len);
 128 time_t mktimegm(struct tm *tm);
 129 int qemu_fls(int i);
 130 int qemu_fdatasync(int fd);
 131 int fcntl_setfl(int fd, int flag);
 132 int qemu_parse_fd(const char *param);
 133
 134 /*
 135  * strtosz() suffixes used to specify the default treatment of an
 136  * argument passed to strtosz() without an explicit suffix.
 137  * These should be defined using upper case characters in the range
 138  * A-Z, as strtosz() will use qemu_toupper() on the given argument
 139  * prior to comparison.
 140  */
 141 #define STRTOSZ_DEFSUFFIX_TB    'T'
 142 #define STRTOSZ_DEFSUFFIX_GB    'G'
 143 #define STRTOSZ_DEFSUFFIX_MB    'M'
 144 #define STRTOSZ_DEFSUFFIX_KB    'K'
 145 #define STRTOSZ_DEFSUFFIX_B     'B'
 146 int64_t strtosz(const char *nptr, char **end);
 147 int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
 148 int64_t strtosz_suffix_unit(const char *nptr, char **end,
 149                             const char default_suffix, int64_t unit);
 150
 151 /* path.c */
 152 void init_paths(const char *prefix);
 153 const char *path(const char *pathname);
 154
 155 #define qemu_isalnum(c)         isalnum((unsigned char)(c))
 156 #define qemu_isalpha(c)         isalpha((unsigned char)(c))
 157 #define qemu_iscntrl(c)         iscntrl((unsigned char)(c))
 158 #define qemu_isdigit(c)         isdigit((unsigned char)(c))
 159 #define qemu_isgraph(c)         isgraph((unsigned char)(c))
 160 #define qemu_islower(c)         islower((unsigned char)(c))
 161 #define qemu_isprint(c)         isprint((unsigned char)(c))
 162 #define qemu_ispunct(c)         ispunct((unsigned char)(c))
 163 #define qemu_isspace(c)         isspace((unsigned char)(c))
 164 #define qemu_isupper(c)         isupper((unsigned char)(c))
 165 #define qemu_isxdigit(c)        isxdigit((unsigned char)(c))
 166 #define qemu_tolower(c)         tolower((unsigned char)(c))
 167 #define qemu_toupper(c)         toupper((unsigned char)(c))
 168 #define qemu_isascii(c)         isascii((unsigned char)(c))
 169 #define qemu_toascii(c)         toascii((unsigned char)(c))
 170
 171 void *qemu_oom_check(void *ptr);
 172
 173 int qemu_open(const char *name, int flags, ...);
 174 ssize_t qemu_write_full(int fd, const void *buf, size_t count)
 175     QEMU_WARN_UNUSED_RESULT;
 176 ssize_t qemu_send_full(int fd, const void *buf, size_t count, int flags)
 177     QEMU_WARN_UNUSED_RESULT;
 178 ssize_t qemu_recv_full(int fd, void *buf, size_t count, int flags)
 179     QEMU_WARN_UNUSED_RESULT;
 180 void qemu_set_cloexec(int fd);
 181
 182 #ifndef _WIN32
 183 int qemu_eventfd(int pipefd[2]);
 184 int qemu_pipe(int pipefd[2]);
 185 #endif
 186
 187 #ifdef _WIN32
 188 #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
 189 #else
 190 #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
 191 #endif
 192
 193 int qemu_recvv(int sockfd, struct iovec *iov, int len, int iov_offset);
 194 int qemu_sendv(int sockfd, struct iovec *iov, int len, int iov_offset);
 195
 196 /* Error handling.  */
 197
 198 void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
 199
 200 struct ParallelIOArg {
 201     void *buffer;
 202     int count;
 203 };
 204
 205 typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
 206
 207 /* A load of opaque types so that device init declarations don't have to
 208    pull in all the real definitions.  */
 209 typedef struct NICInfo NICInfo;
 210 typedef struct HCIInfo HCIInfo;
 211 typedef struct AudioState AudioState;
 212 typedef struct BlockDriverState BlockDriverState;
 213 typedef struct DriveInfo DriveInfo;
 214 typedef struct DisplayState DisplayState;
 215 typedef struct DisplayChangeListener DisplayChangeListener;
 216 typedef struct DisplaySurface DisplaySurface;
 217 typedef struct DisplayAllocator DisplayAllocator;
 218 typedef struct PixelFormat PixelFormat;
 219 typedef struct TextConsole TextConsole;
 220 typedef TextConsole QEMUConsole;
 221 typedef struct CharDriverState CharDriverState;
 222 typedef struct MACAddr MACAddr;
 223 typedef struct VLANState VLANState;
 224 typedef struct VLANClientState VLANClientState;
 225 typedef struct i2c_bus i2c_bus;
 226 typedef struct i2c_slave i2c_slave;
 227 typedef struct ISABus ISABus;
 228 typedef struct SMBusDevice SMBusDevice;
 229 typedef struct PCIHostState PCIHostState;
 230 typedef struct PCIExpressHost PCIExpressHost;
 231 typedef struct PCIBus PCIBus;
 232 typedef struct PCIDevice PCIDevice;
 233 typedef struct PCIExpressDevice PCIExpressDevice;
 234 typedef struct PCIBridge PCIBridge;
 235 typedef struct PCIEAERMsg PCIEAERMsg;
 236 typedef struct PCIEAERLog PCIEAERLog;
 237 typedef struct PCIEAERErr PCIEAERErr;
 238 typedef struct PCIEPort PCIEPort;
 239 typedef struct PCIESlot PCIESlot;
 240 typedef struct SerialState SerialState;
 241 typedef struct IRQState *qemu_irq;
 242 typedef struct PCMCIACardState PCMCIACardState;
 243 typedef struct MouseTransformInfo MouseTransformInfo;
 244 typedef struct uWireSlave uWireSlave;
 245 typedef struct I2SCodec I2SCodec;
 246 typedef struct SSIBus SSIBus;
 247 typedef struct EventNotifier EventNotifier;
 248 typedef struct VirtIODevice VirtIODevice;
 249 typedef struct QEMUSGList QEMUSGList;
 250
 251 typedef uint64_t pcibus_t;
 252
 253 typedef enum LostTickPolicy {
 254     LOST_TICK_DISCARD,
 255     LOST_TICK_DELAY,
 256     LOST_TICK_MERGE,
 257     LOST_TICK_SLEW,
 258     LOST_TICK_MAX
 259 } LostTickPolicy;
 260
 261 void tcg_exec_init(unsigned long tb_size);
 262 bool tcg_enabled(void);
 263
 264 void cpu_exec_init_all(void);
 265
 266 /* CPU save/load.  */
 267 void cpu_save(QEMUFile *f, void *opaque);
 268 int cpu_load(QEMUFile *f, void *opaque, int version_id);
 269
 270 /* Unblock cpu */
 271 void qemu_cpu_kick(void *env);
 272 void qemu_cpu_kick_self(void);
 273 int qemu_cpu_is_self(void *env);
 274 bool all_cpu_threads_idle(void);
 275
 276 /* work queue */
 277 struct qemu_work_item {
 278     struct qemu_work_item *next;
 279     void (*func)(void *data);
 280     void *data;
 281     int done;
 282 };
 283
 284 #ifdef CONFIG_USER_ONLY
 285 #define qemu_init_vcpu(env) do { } while (0)
 286 #else
 287 void qemu_init_vcpu(void *env);
 288 #endif
 289
 290 /**
 291  * Sends an iovec (or optionally a part of it) down a socket, yielding
 292  * when the socket is full.
 293  */
 294 int qemu_co_sendv(int sockfd, struct iovec *iov,
 295                   int len, int iov_offset);
 296
 297 /**
 298  * Receives data into an iovec (or optionally into a part of it) from
 299  * a socket, yielding when there is no data in the socket.
 300  */
 301 int qemu_co_recvv(int sockfd, struct iovec *iov,
 302                   int len, int iov_offset);
 303
 304
 305 /**
 306  * Sends a buffer down a socket, yielding when the socket is full.
 307  */
 308 int qemu_co_send(int sockfd, void *buf, int len);
 309
 310 /**
 311  * Receives data into a buffer from a socket, yielding when there
 312  * is no data in the socket.
 313  */
 314 int qemu_co_recv(int sockfd, void *buf, int len);
 315
 316
 317 typedef struct QEMUIOVector {
 318     struct iovec *iov;
 319     int niov;
 320     int nalloc;
 321     size_t size;
 322 } QEMUIOVector;
 323
 324 void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
 325 void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
 326 void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
 327 void qemu_iovec_copy(QEMUIOVector *dst, QEMUIOVector *src, uint64_t skip,
 328     size_t size);
 329 void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
 330 void qemu_iovec_destroy(QEMUIOVector *qiov);
 331 void qemu_iovec_reset(QEMUIOVector *qiov);
 332 void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
 333 void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
 334 void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
 335 void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
 336                             size_t skip);
 337
 338 bool buffer_is_zero(const void *buf, size_t len);
 339
 340 void qemu_progress_init(int enabled, float min_skip);
 341 void qemu_progress_end(void);
 342 void qemu_progress_print(float delta, int max);
 343
 344 #define QEMU_FILE_TYPE_BIOS   0
 345 #define QEMU_FILE_TYPE_KEYMAP 1
 346 char *qemu_find_file(int type, const char *name);
 347
 348 /* OS specific functions */
 349 void os_setup_early_signal_handling(void);
 350 char *os_find_datadir(const char *argv0);
 351 void os_parse_cmd_args(int index, const char *optarg);
 352 void os_pidfile_error(void);
 353
 354 /* Convert a byte between binary and BCD.  */
 355 static inline uint8_t to_bcd(uint8_t val)
 356 {
 357     return ((val / 10) << 4) | (val % 10);
 358 }
 359
 360 static inline uint8_t from_bcd(uint8_t val)
 361 {
 362     return ((val >> 4) * 10) + (val & 0x0f);
 363 }
 364
 365 /* compute with 96 bit intermediate result: (a*b)/c */
 366 static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
 367 {
 368     union {
 369         uint64_t ll;
 370         struct {
 371 #ifdef HOST_WORDS_BIGENDIAN
 372             uint32_t high, low;
 373 #else
 374             uint32_t low, high;
 375 #endif
 376         } l;
 377     } u, res;
 378     uint64_t rl, rh;
 379
 380     u.ll = a;
 381     rl = (uint64_t)u.l.low * (uint64_t)b;
 382     rh = (uint64_t)u.l.high * (uint64_t)b;
 383     rh += (rl >> 32);
 384     res.l.high = rh / c;
 385     res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
 386     return res.ll;
 387 }
 388
 389 /* Round number down to multiple */
 390 #define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m))
 391
 392 /* Round number up to multiple */
 393 #define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))
 394
 395 #include "module.h"
 396
 397 #endif