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 /*
  58  * Use the same value as Linux for now.
  59  */
  60 #define IOV_MAX         1024
  61 #else
  62 #include <sys/uio.h>
  63 #endif
  64
  65 #ifdef _WIN32
  66 #define fsync _commit
  67 #define lseek _lseeki64
  68 extern int qemu_ftruncate64(int, int64_t);
  69 #define ftruncate qemu_ftruncate64
  70
  71 static inline char *realpath(const char *path, char *resolved_path)
  72 {
  73     _fullpath(resolved_path, path, _MAX_PATH);
  74     return resolved_path;
  75 }
  76
  77 #define PRId64 "I64d"
  78 #define PRIx64 "I64x"
  79 #define PRIu64 "I64u"
  80 #define PRIo64 "I64o"
  81 #endif
  82
  83 /* FIXME: Remove NEED_CPU_H.  */
  84 #ifndef NEED_CPU_H
  85
  86 #include <setjmp.h>
  87 #include "osdep.h"
  88 #include "bswap.h"
  89
  90 #else
  91
  92 #include "cpu.h"
  93
  94 #endif /* !defined(NEED_CPU_H) */
  95
  96 /* bottom halves */
  97 typedef struct QEMUBH QEMUBH;
  98
  99 typedef void QEMUBHFunc(void *opaque);
 100
 101 void async_context_push(void);
 102 void async_context_pop(void);
 103 int get_async_context_id(void);
 104
 105 QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque);
 106 void qemu_bh_schedule(QEMUBH *bh);
 107 /* Bottom halfs that are scheduled from a bottom half handler are instantly
 108  * invoked.  This can create an infinite loop if a bottom half handler
 109  * schedules itself.  qemu_bh_schedule_idle() avoids this infinite loop by
 110  * ensuring that the bottom half isn't executed until the next main loop
 111  * iteration.
 112  */
 113 void qemu_bh_schedule_idle(QEMUBH *bh);
 114 void qemu_bh_cancel(QEMUBH *bh);
 115 void qemu_bh_delete(QEMUBH *bh);
 116 int qemu_bh_poll(void);
 117 void qemu_bh_update_timeout(int *timeout);
 118
 119 uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c);
 120
 121 void qemu_get_timedate(struct tm *tm, int offset);
 122 int qemu_timedate_diff(struct tm *tm);
 123
 124 /* cutils.c */
 125 void pstrcpy(char *buf, int buf_size, const char *str);
 126 char *pstrcat(char *buf, int buf_size, const char *s);
 127 int strstart(const char *str, const char *val, const char **ptr);
 128 int stristart(const char *str, const char *val, const char **ptr);
 129 int qemu_strnlen(const char *s, int max_len);
 130 time_t mktimegm(struct tm *tm);
 131 int qemu_fls(int i);
 132 int qemu_fdatasync(int fd);
 133
 134 /* path.c */
 135 void init_paths(const char *prefix);
 136 const char *path(const char *pathname);
 137
 138 #define qemu_isalnum(c)         isalnum((unsigned char)(c))
 139 #define qemu_isalpha(c)         isalpha((unsigned char)(c))
 140 #define qemu_iscntrl(c)         iscntrl((unsigned char)(c))
 141 #define qemu_isdigit(c)         isdigit((unsigned char)(c))
 142 #define qemu_isgraph(c)         isgraph((unsigned char)(c))
 143 #define qemu_islower(c)         islower((unsigned char)(c))
 144 #define qemu_isprint(c)         isprint((unsigned char)(c))
 145 #define qemu_ispunct(c)         ispunct((unsigned char)(c))
 146 #define qemu_isspace(c)         isspace((unsigned char)(c))
 147 #define qemu_isupper(c)         isupper((unsigned char)(c))
 148 #define qemu_isxdigit(c)        isxdigit((unsigned char)(c))
 149 #define qemu_tolower(c)         tolower((unsigned char)(c))
 150 #define qemu_toupper(c)         toupper((unsigned char)(c))
 151 #define qemu_isascii(c)         isascii((unsigned char)(c))
 152 #define qemu_toascii(c)         toascii((unsigned char)(c))
 153
 154 void *qemu_malloc(size_t size);
 155 void *qemu_realloc(void *ptr, size_t size);
 156 void *qemu_mallocz(size_t size);
 157 void qemu_free(void *ptr);
 158 char *qemu_strdup(const char *str);
 159 char *qemu_strndup(const char *str, size_t size);
 160
 161 void *get_mmap_addr(unsigned long size);
 162
 163
 164 void qemu_mutex_lock_iothread(void);
 165 void qemu_mutex_unlock_iothread(void);
 166
 167 int qemu_open(const char *name, int flags, ...);
 168 ssize_t qemu_write_full(int fd, const void *buf, size_t count)
 169     QEMU_WARN_UNUSED_RESULT;
 170 void qemu_set_cloexec(int fd);
 171
 172 #ifndef _WIN32
 173 int qemu_eventfd(int pipefd[2]);
 174 int qemu_pipe(int pipefd[2]);
 175 #endif
 176
 177 /* Error handling.  */
 178
 179 void QEMU_NORETURN hw_error(const char *fmt, ...)
 180     __attribute__ ((__format__ (__printf__, 1, 2)));
 181
 182 /* IO callbacks.  */
 183 typedef void IOReadHandler(void *opaque, const uint8_t *buf, int size);
 184 typedef int IOCanRWHandler(void *opaque);
 185 typedef void IOHandler(void *opaque);
 186
 187 struct ParallelIOArg {
 188     void *buffer;
 189     int count;
 190 };
 191
 192 typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
 193
 194 /* A load of opaque types so that device init declarations don't have to
 195    pull in all the real definitions.  */
 196 typedef struct NICInfo NICInfo;
 197 typedef struct HCIInfo HCIInfo;
 198 typedef struct AudioState AudioState;
 199 typedef struct BlockDriverState BlockDriverState;
 200 typedef struct DisplayState DisplayState;
 201 typedef struct DisplayChangeListener DisplayChangeListener;
 202 typedef struct DisplaySurface DisplaySurface;
 203 typedef struct DisplayAllocator DisplayAllocator;
 204 typedef struct PixelFormat PixelFormat;
 205 typedef struct TextConsole TextConsole;
 206 typedef TextConsole QEMUConsole;
 207 typedef struct CharDriverState CharDriverState;
 208 typedef struct MACAddr MACAddr;
 209 typedef struct VLANState VLANState;
 210 typedef struct VLANClientState VLANClientState;
 211 typedef struct QEMUFile QEMUFile;
 212 typedef struct i2c_bus i2c_bus;
 213 typedef struct i2c_slave i2c_slave;
 214 typedef struct SMBusDevice SMBusDevice;
 215 typedef struct QEMUTimer QEMUTimer;
 216 typedef struct PCIHostState PCIHostState;
 217 typedef struct PCIExpressHost PCIExpressHost;
 218 typedef struct PCIBus PCIBus;
 219 typedef struct PCIDevice PCIDevice;
 220 typedef struct SerialState SerialState;
 221 typedef struct IRQState *qemu_irq;
 222 typedef struct PCMCIACardState PCMCIACardState;
 223 typedef struct MouseTransformInfo MouseTransformInfo;
 224 typedef struct uWireSlave uWireSlave;
 225 typedef struct I2SCodec I2SCodec;
 226 typedef struct DeviceState DeviceState;
 227 typedef struct SSIBus SSIBus;
 228
 229 /* CPU save/load.  */
 230 void cpu_save(QEMUFile *f, void *opaque);
 231 int cpu_load(QEMUFile *f, void *opaque, int version_id);
 232
 233 /* Force QEMU to stop what it's doing and service IO */
 234 void qemu_service_io(void);
 235
 236 /* Force QEMU to process pending events */
 237 void qemu_notify_event(void);
 238
 239 /* Unblock cpu */
 240 void qemu_cpu_kick(void *env);
 241 int qemu_cpu_self(void *env);
 242
 243 #ifdef CONFIG_USER_ONLY
 244 #define qemu_init_vcpu(env) do { } while (0)
 245 #else
 246 void qemu_init_vcpu(void *env);
 247 #endif
 248
 249 typedef struct QEMUIOVector {
 250     struct iovec *iov;
 251     int niov;
 252     int nalloc;
 253     size_t size;
 254 } QEMUIOVector;
 255
 256 void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
 257 void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
 258 void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
 259 void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
 260 void qemu_iovec_destroy(QEMUIOVector *qiov);
 261 void qemu_iovec_reset(QEMUIOVector *qiov);
 262 void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
 263 void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
 264
 265 struct Monitor;
 266 typedef struct Monitor Monitor;
 267
 268 /* Convert a byte between binary and BCD.  */
 269 static inline uint8_t to_bcd(uint8_t val)
 270 {
 271     return ((val / 10) << 4) | (val % 10);
 272 }
 273
 274 static inline uint8_t from_bcd(uint8_t val)
 275 {
 276     return ((val >> 4) * 10) + (val & 0x0f);
 277 }
 278
 279 #include "module.h"
 280
 281 #endif /* dyngen-exec.h hack */
 282
 283 #endif