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 "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 /* Hack around the mess dyngen-exec.h causes: We need QEMU_NORETURN in files that
  22    cannot include the following headers without conflicts. This condition has
  23    to be removed once dyngen is gone. */
  24 #ifndef __DYNGEN_EXEC_H__
  25
  26 /* we put basic includes here to avoid repeating them in device drivers */
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <stdarg.h>
  30 #include <stdbool.h>
  31 #include <string.h>
  32 #include <strings.h>
  33 #include <inttypes.h>
  34 #include <limits.h>
  35 #include <time.h>
  36 #include <ctype.h>
  37 #include <errno.h>
  38 #include <unistd.h>
  39 #include <fcntl.h>
  40 #include <sys/stat.h>
  41 #include <assert.h>
  42
  43 #ifndef O_LARGEFILE
  44 #define O_LARGEFILE 0
  45 #endif
  46 #ifndef O_BINARY
  47 #define O_BINARY 0
  48 #endif
  49 #ifndef MAP_ANONYMOUS
  50 #define MAP_ANONYMOUS MAP_ANON
  51 #endif
  52 #ifndef ENOMEDIUM
  53 #define ENOMEDIUM ENODEV
  54 #endif
  55 #if !defined(ENOTSUP)
  56 #define ENOTSUP 4096
  57 #endif
  58
  59 #ifndef CONFIG_IOVEC
  60 #define CONFIG_IOVEC
  61 struct iovec {
  62     void *iov_base;
  63     size_t iov_len;
  64 };
  65 /*
  66  * Use the same value as Linux for now.
  67  */
  68 #define IOV_MAX         1024
  69 #else
  70 #include <sys/uio.h>
  71 #endif
  72
  73 #ifdef _WIN32
  74 #define fsync _commit
  75 #define lseek _lseeki64
  76 extern int qemu_ftruncate64(int, int64_t);
  77 #define ftruncate qemu_ftruncate64
  78
  79 static inline char *realpath(const char *path, char *resolved_path)
  80 {
  81     _fullpath(resolved_path, path, _MAX_PATH);
  82     return resolved_path;
  83 }
  84
  85 #define PRId64 "I64d"
  86 #define PRIx64 "I64x"
  87 #define PRIu64 "I64u"
  88 #define PRIo64 "I64o"
  89 #endif
  90
  91 /* FIXME: Remove NEED_CPU_H.  */
  92 #ifndef NEED_CPU_H
  93
  94 #include <setjmp.h>
  95 #include "osdep.h"
  96 #include "bswap.h"
  97
  98 #else
  99
 100 #include "cpu.h"
 101
 102 #endif /* !defined(NEED_CPU_H) */
 103
 104 /* bottom halves */
 105 typedef void QEMUBHFunc(void *opaque);
 106
 107 void async_context_push(void);
 108 void async_context_pop(void);
 109 int get_async_context_id(void);
 110
 111 QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque);
 112 void qemu_bh_schedule(QEMUBH *bh);
 113 /* Bottom halfs that are scheduled from a bottom half handler are instantly
 114  * invoked.  This can create an infinite loop if a bottom half handler
 115  * schedules itself.  qemu_bh_schedule_idle() avoids this infinite loop by
 116  * ensuring that the bottom half isn't executed until the next main loop
 117  * iteration.
 118  */
 119 void qemu_bh_schedule_idle(QEMUBH *bh);
 120 void qemu_bh_cancel(QEMUBH *bh);
 121 void qemu_bh_delete(QEMUBH *bh);
 122 int qemu_bh_poll(void);
 123 void qemu_bh_update_timeout(int *timeout);
 124
 125 uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c);
 126
 127 void qemu_get_timedate(struct tm *tm, int offset);
 128 int qemu_timedate_diff(struct tm *tm);
 129
 130 /* cutils.c */
 131 void pstrcpy(char *buf, int buf_size, const char *str);
 132 char *pstrcat(char *buf, int buf_size, const char *s);
 133 int strstart(const char *str, const char *val, const char **ptr);
 134 int stristart(const char *str, const char *val, const char **ptr);
 135 int qemu_strnlen(const char *s, int max_len);
 136 time_t mktimegm(struct tm *tm);
 137 int qemu_fls(int i);
 138 int qemu_fdatasync(int fd);
 139 int fcntl_setfl(int fd, int flag);
 140
 141 /* path.c */
 142 void init_paths(const char *prefix);
 143 const char *path(const char *pathname);
 144
 145 #define qemu_isalnum(c)         isalnum((unsigned char)(c))
 146 #define qemu_isalpha(c)         isalpha((unsigned char)(c))
 147 #define qemu_iscntrl(c)         iscntrl((unsigned char)(c))
 148 #define qemu_isdigit(c)         isdigit((unsigned char)(c))
 149 #define qemu_isgraph(c)         isgraph((unsigned char)(c))
 150 #define qemu_islower(c)         islower((unsigned char)(c))
 151 #define qemu_isprint(c)         isprint((unsigned char)(c))
 152 #define qemu_ispunct(c)         ispunct((unsigned char)(c))
 153 #define qemu_isspace(c)         isspace((unsigned char)(c))
 154 #define qemu_isupper(c)         isupper((unsigned char)(c))
 155 #define qemu_isxdigit(c)        isxdigit((unsigned char)(c))
 156 #define qemu_tolower(c)         tolower((unsigned char)(c))
 157 #define qemu_toupper(c)         toupper((unsigned char)(c))
 158 #define qemu_isascii(c)         isascii((unsigned char)(c))
 159 #define qemu_toascii(c)         toascii((unsigned char)(c))
 160
 161 void *qemu_malloc(size_t size);
 162 void *qemu_realloc(void *ptr, size_t size);
 163 void *qemu_mallocz(size_t size);
 164 void qemu_free(void *ptr);
 165 char *qemu_strdup(const char *str);
 166 char *qemu_strndup(const char *str, size_t size);
 167
 168 void qemu_mutex_lock_iothread(void);
 169 void qemu_mutex_unlock_iothread(void);
 170
 171 int qemu_open(const char *name, int flags, ...);
 172 ssize_t qemu_write_full(int fd, const void *buf, size_t count)
 173     QEMU_WARN_UNUSED_RESULT;
 174 void qemu_set_cloexec(int fd);
 175
 176 #ifndef _WIN32
 177 int qemu_eventfd(int pipefd[2]);
 178 int qemu_pipe(int pipefd[2]);
 179 #endif
 180
 181 /* Error handling.  */
 182
 183 void QEMU_NORETURN hw_error(const char *fmt, ...)
 184     __attribute__ ((__format__ (__printf__, 1, 2)));
 185
 186 /* IO callbacks.  */
 187 typedef void IOReadHandler(void *opaque, const uint8_t *buf, int size);
 188 typedef int IOCanReadHandler(void *opaque);
 189 typedef void IOHandler(void *opaque);
 190
 191 struct ParallelIOArg {
 192     void *buffer;
 193     int count;
 194 };
 195
 196 typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
 197
 198 /* A load of opaque types so that device init declarations don't have to
 199    pull in all the real definitions.  */
 200 typedef struct NICInfo NICInfo;
 201 typedef struct HCIInfo HCIInfo;
 202 typedef struct AudioState AudioState;
 203 typedef struct BlockDriverState BlockDriverState;
 204 typedef struct DriveInfo DriveInfo;
 205 typedef struct DisplayState DisplayState;
 206 typedef struct DisplayChangeListener DisplayChangeListener;
 207 typedef struct DisplaySurface DisplaySurface;
 208 typedef struct DisplayAllocator DisplayAllocator;
 209 typedef struct PixelFormat PixelFormat;
 210 typedef struct TextConsole TextConsole;
 211 typedef TextConsole QEMUConsole;
 212 typedef struct CharDriverState CharDriverState;
 213 typedef struct MACAddr MACAddr;
 214 typedef struct VLANState VLANState;
 215 typedef struct VLANClientState VLANClientState;
 216 typedef struct i2c_bus i2c_bus;
 217 typedef struct i2c_slave i2c_slave;
 218 typedef struct SMBusDevice SMBusDevice;
 219 typedef struct PCIHostState PCIHostState;
 220 typedef struct PCIExpressHost PCIExpressHost;
 221 typedef struct PCIBus PCIBus;
 222 typedef struct PCIDevice PCIDevice;
 223 typedef struct SerialState SerialState;
 224 typedef struct IRQState *qemu_irq;
 225 typedef struct PCMCIACardState PCMCIACardState;
 226 typedef struct MouseTransformInfo MouseTransformInfo;
 227 typedef struct uWireSlave uWireSlave;
 228 typedef struct I2SCodec I2SCodec;
 229 typedef struct SSIBus SSIBus;
 230 typedef struct EventNotifier EventNotifier;
 231 typedef struct VirtIODevice VirtIODevice;
 232
 233 typedef uint64_t pcibus_t;
 234
 235 typedef enum {
 236     IF_NONE,
 237     IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN,
 238     IF_COUNT
 239 } BlockInterfaceType;
 240
 241 void cpu_exec_init_all(unsigned long tb_size);
 242
 243 /* CPU save/load.  */
 244 void cpu_save(QEMUFile *f, void *opaque);
 245 int cpu_load(QEMUFile *f, void *opaque, int version_id);
 246
 247 /* Force QEMU to stop what it's doing and service IO */
 248 void qemu_service_io(void);
 249
 250 /* Force QEMU to process pending events */
 251 void qemu_notify_event(void);
 252
 253 /* Unblock cpu */
 254 void qemu_cpu_kick(void *env);
 255 int qemu_cpu_self(void *env);
 256
 257 /* work queue */
 258 struct qemu_work_item {
 259     struct qemu_work_item *next;
 260     void (*func)(void *data);
 261     void *data;
 262     int done;
 263 };
 264
 265 #ifdef CONFIG_USER_ONLY
 266 #define qemu_init_vcpu(env) do { } while (0)
 267 #else
 268 void qemu_init_vcpu(void *env);
 269 #endif
 270
 271 typedef struct QEMUIOVector {
 272     struct iovec *iov;
 273     int niov;
 274     int nalloc;
 275     size_t size;
 276 } QEMUIOVector;
 277
 278 void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
 279 void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
 280 void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
 281 void qemu_iovec_copy(QEMUIOVector *dst, QEMUIOVector *src, uint64_t skip,
 282     size_t size);
 283 void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
 284 void qemu_iovec_destroy(QEMUIOVector *qiov);
 285 void qemu_iovec_reset(QEMUIOVector *qiov);
 286 void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
 287 void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
 288 void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
 289
 290 struct Monitor;
 291 typedef struct Monitor Monitor;
 292
 293 /* Convert a byte between binary and BCD.  */
 294 static inline uint8_t to_bcd(uint8_t val)
 295 {
 296     return ((val / 10) << 4) | (val % 10);
 297 }
 298
 299 static inline uint8_t from_bcd(uint8_t val)
 300 {
 301     return ((val >> 4) * 10) + (val & 0x0f);
 302 }
 303
 304 #include "module.h"
 305
 306 #endif /* dyngen-exec.h hack */
 307
 308 #endif