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
 133 /*
 134  * strtosz() suffixes used to specify the default treatment of an
 135  * argument passed to strtosz() without an explicit suffix.
 136  * These should be defined using upper case characters in the range
 137  * A-Z, as strtosz() will use qemu_toupper() on the given argument
 138  * prior to comparison.
 139  */
 140 #define STRTOSZ_DEFSUFFIX_TB    'T'
 141 #define STRTOSZ_DEFSUFFIX_GB    'G'
 142 #define STRTOSZ_DEFSUFFIX_MB    'M'
 143 #define STRTOSZ_DEFSUFFIX_KB    'K'
 144 #define STRTOSZ_DEFSUFFIX_B     'B'
 145 int64_t strtosz(const char *nptr, char **end);
 146 int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
 147 int64_t strtosz_suffix_unit(const char *nptr, char **end,
 148                             const char default_suffix, int64_t unit);
 149
 150 /* path.c */
 151 void init_paths(const char *prefix);
 152 const char *path(const char *pathname);
 153
 154 #define qemu_isalnum(c)         isalnum((unsigned char)(c))
 155 #define qemu_isalpha(c)         isalpha((unsigned char)(c))
 156 #define qemu_iscntrl(c)         iscntrl((unsigned char)(c))
 157 #define qemu_isdigit(c)         isdigit((unsigned char)(c))
 158 #define qemu_isgraph(c)         isgraph((unsigned char)(c))
 159 #define qemu_islower(c)         islower((unsigned char)(c))
 160 #define qemu_isprint(c)         isprint((unsigned char)(c))
 161 #define qemu_ispunct(c)         ispunct((unsigned char)(c))
 162 #define qemu_isspace(c)         isspace((unsigned char)(c))
 163 #define qemu_isupper(c)         isupper((unsigned char)(c))
 164 #define qemu_isxdigit(c)        isxdigit((unsigned char)(c))
 165 #define qemu_tolower(c)         tolower((unsigned char)(c))
 166 #define qemu_toupper(c)         toupper((unsigned char)(c))
 167 #define qemu_isascii(c)         isascii((unsigned char)(c))
 168 #define qemu_toascii(c)         toascii((unsigned char)(c))
 169
 170 void *qemu_oom_check(void *ptr);
 171
 172 int qemu_open(const char *name, int flags, ...);
 173 ssize_t qemu_write_full(int fd, const void *buf, size_t count)
 174     QEMU_WARN_UNUSED_RESULT;
 175 void qemu_set_cloexec(int fd);
 176
 177 #ifndef _WIN32
 178 int qemu_eventfd(int pipefd[2]);
 179 int qemu_pipe(int pipefd[2]);
 180 #endif
 181
 182 #ifdef _WIN32
 183 #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
 184 #else
 185 #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
 186 #endif
 187
 188 /* Error handling.  */
 189
 190 void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
 191
 192 struct ParallelIOArg {
 193     void *buffer;
 194     int count;
 195 };
 196
 197 typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
 198
 199 /* A load of opaque types so that device init declarations don't have to
 200    pull in all the real definitions.  */
 201 typedef struct NICInfo NICInfo;
 202 typedef struct HCIInfo HCIInfo;
 203 typedef struct AudioState AudioState;
 204 typedef struct BlockDriverState BlockDriverState;
 205 typedef struct DriveInfo DriveInfo;
 206 typedef struct DisplayState DisplayState;
 207 typedef struct DisplayChangeListener DisplayChangeListener;
 208 typedef struct DisplaySurface DisplaySurface;
 209 typedef struct DisplayAllocator DisplayAllocator;
 210 typedef struct PixelFormat PixelFormat;
 211 typedef struct TextConsole TextConsole;
 212 typedef TextConsole QEMUConsole;
 213 typedef struct CharDriverState CharDriverState;
 214 typedef struct MACAddr MACAddr;
 215 typedef struct VLANState VLANState;
 216 typedef struct VLANClientState VLANClientState;
 217 typedef struct i2c_bus i2c_bus;
 218 typedef struct i2c_slave i2c_slave;
 219 typedef struct SMBusDevice SMBusDevice;
 220 typedef struct PCIHostState PCIHostState;
 221 typedef struct PCIExpressHost PCIExpressHost;
 222 typedef struct PCIBus PCIBus;
 223 typedef struct PCIDevice PCIDevice;
 224 typedef struct PCIExpressDevice PCIExpressDevice;
 225 typedef struct PCIBridge PCIBridge;
 226 typedef struct PCIEAERMsg PCIEAERMsg;
 227 typedef struct PCIEAERLog PCIEAERLog;
 228 typedef struct PCIEAERErr PCIEAERErr;
 229 typedef struct PCIEPort PCIEPort;
 230 typedef struct PCIESlot PCIESlot;
 231 typedef struct SerialState SerialState;
 232 typedef struct IRQState *qemu_irq;
 233 typedef struct PCMCIACardState PCMCIACardState;
 234 typedef struct MouseTransformInfo MouseTransformInfo;
 235 typedef struct uWireSlave uWireSlave;
 236 typedef struct I2SCodec I2SCodec;
 237 typedef struct SSIBus SSIBus;
 238 typedef struct EventNotifier EventNotifier;
 239 typedef struct VirtIODevice VirtIODevice;
 240 typedef struct QEMUSGList QEMUSGList;
 241
 242 typedef uint64_t pcibus_t;
 243
 244 void tcg_exec_init(unsigned long tb_size);
 245 bool tcg_enabled(void);
 246
 247 void cpu_exec_init_all(void);
 248
 249 /* CPU save/load.  */
 250 void cpu_save(QEMUFile *f, void *opaque);
 251 int cpu_load(QEMUFile *f, void *opaque, int version_id);
 252
 253 /* Unblock cpu */
 254 void qemu_cpu_kick(void *env);
 255 void qemu_cpu_kick_self(void);
 256 int qemu_cpu_is_self(void *env);
 257 bool all_cpu_threads_idle(void);
 258
 259 /* work queue */
 260 struct qemu_work_item {
 261     struct qemu_work_item *next;
 262     void (*func)(void *data);
 263     void *data;
 264     int done;
 265 };
 266
 267 #ifdef CONFIG_USER_ONLY
 268 #define qemu_init_vcpu(env) do { } while (0)
 269 #else
 270 void qemu_init_vcpu(void *env);
 271 #endif
 272
 273 typedef struct QEMUIOVector {
 274     struct iovec *iov;
 275     int niov;
 276     int nalloc;
 277     size_t size;
 278 } QEMUIOVector;
 279
 280 void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
 281 void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
 282 void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
 283 void qemu_iovec_copy(QEMUIOVector *dst, QEMUIOVector *src, uint64_t skip,
 284     size_t size);
 285 void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
 286 void qemu_iovec_destroy(QEMUIOVector *qiov);
 287 void qemu_iovec_reset(QEMUIOVector *qiov);
 288 void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
 289 void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
 290 void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
 291 void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
 292                             size_t skip);
 293
 294 void qemu_progress_init(int enabled, float min_skip);
 295 void qemu_progress_end(void);
 296 void qemu_progress_print(float delta, int max);
 297
 298 #define QEMU_FILE_TYPE_BIOS   0
 299 #define QEMU_FILE_TYPE_KEYMAP 1
 300 char *qemu_find_file(int type, const char *name);
 301
 302 /* OS specific functions */
 303 void os_setup_early_signal_handling(void);
 304 char *os_find_datadir(const char *argv0);
 305 void os_parse_cmd_args(int index, const char *optarg);
 306 void os_pidfile_error(void);
 307
 308 /* Convert a byte between binary and BCD.  */
 309 static inline uint8_t to_bcd(uint8_t val)
 310 {
 311     return ((val / 10) << 4) | (val % 10);
 312 }
 313
 314 static inline uint8_t from_bcd(uint8_t val)
 315 {
 316     return ((val >> 4) * 10) + (val & 0x0f);
 317 }
 318
 319 /* compute with 96 bit intermediate result: (a*b)/c */
 320 static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
 321 {
 322     union {
 323         uint64_t ll;
 324         struct {
 325 #ifdef HOST_WORDS_BIGENDIAN
 326             uint32_t high, low;
 327 #else
 328             uint32_t low, high;
 329 #endif
 330         } l;
 331     } u, res;
 332     uint64_t rl, rh;
 333
 334     u.ll = a;
 335     rl = (uint64_t)u.l.low * (uint64_t)b;
 336     rh = (uint64_t)u.l.high * (uint64_t)b;
 337     rh += (rl >> 32);
 338     res.l.high = rh / c;
 339     res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
 340     return res.ll;
 341 }
 342
 343 #include "module.h"
 344
 345 #endif