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