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