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