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 #define QEMU_NORETURN __attribute__ ((__noreturn__))
   6 #ifdef CONFIG_GCC_ATTRIBUTE_WARN_UNUSED_RESULT
   7 #define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
   8 #else
   9 #define QEMU_WARN_UNUSED_RESULT
  10 #endif
  11
  12 /* Hack around the mess dyngen-exec.h causes: We need QEMU_NORETURN in files that
  13    cannot include the following headers without conflicts. This condition has
  14    to be removed once dyngen is gone. */
  15 #ifndef __DYNGEN_EXEC_H__
  16
  17 /* we put basic includes here to avoid repeating them in device drivers */
  18 #include <stdlib.h>
  19 #include <stdio.h>
  20 #include <stdarg.h>
  21 #include <string.h>
  22 #include <strings.h>
  23 #include <inttypes.h>
  24 #include <limits.h>
  25 #include <time.h>
  26 #include <ctype.h>
  27 #include <errno.h>
  28 #include <unistd.h>
  29 #include <fcntl.h>
  30 #include <sys/stat.h>
  31 #include <assert.h>
  32 #include "config-host.h"
  33
  34 #ifndef O_LARGEFILE
  35 #define O_LARGEFILE 0
  36 #endif
  37 #ifndef O_BINARY
  38 #define O_BINARY 0
  39 #endif
  40 #ifndef MAP_ANONYMOUS
  41 #define MAP_ANONYMOUS MAP_ANON
  42 #endif
  43 #ifndef ENOMEDIUM
  44 #define ENOMEDIUM ENODEV
  45 #endif
  46 #if !defined(ENOTSUP)
  47 #define ENOTSUP 4096
  48 #endif
  49
  50 #ifndef CONFIG_IOVEC
  51 #define CONFIG_IOVEC
  52 struct iovec {
  53     void *iov_base;
  54     size_t iov_len;
  55 };
  56 #else
  57 #include <sys/uio.h>
  58 #endif
  59
  60 #ifdef _WIN32
  61 #define fsync _commit
  62 #define lseek _lseeki64
  63 extern int qemu_ftruncate64(int, int64_t);
  64 #define ftruncate qemu_ftruncate64
  65
  66 static inline char *realpath(const char *path, char *resolved_path)
  67 {
  68     _fullpath(resolved_path, path, _MAX_PATH);
  69     return resolved_path;
  70 }
  71
  72 #define PRId64 "I64d"
  73 #define PRIx64 "I64x"
  74 #define PRIu64 "I64u"
  75 #define PRIo64 "I64o"
  76 #endif
  77
  78 /* FIXME: Remove NEED_CPU_H.  */
  79 #ifndef NEED_CPU_H
  80
  81 #include <setjmp.h>
  82 #include "osdep.h"
  83 #include "bswap.h"
  84
  85 #else
  86
  87 #include "cpu.h"
  88
  89 #endif /* !defined(NEED_CPU_H) */
  90
  91 /* bottom halves */
  92 typedef struct QEMUBH QEMUBH;
  93
  94 typedef void QEMUBHFunc(void *opaque);
  95
  96 void async_context_push(void);
  97 void async_context_pop(void);
  98 int get_async_context_id(void);
  99
 100 QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque);
 101 void qemu_bh_schedule(QEMUBH *bh);
 102 /* Bottom halfs that are scheduled from a bottom half handler are instantly
 103  * invoked.  This can create an infinite loop if a bottom half handler
 104  * schedules itself.  qemu_bh_schedule_idle() avoids this infinite loop by
 105  * ensuring that the bottom half isn't executed until the next main loop
 106  * iteration.
 107  */
 108 void qemu_bh_schedule_idle(QEMUBH *bh);
 109 void qemu_bh_cancel(QEMUBH *bh);
 110 void qemu_bh_delete(QEMUBH *bh);
 111 int qemu_bh_poll(void);
 112 void qemu_bh_update_timeout(int *timeout);
 113
 114 uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c);
 115
 116 void qemu_get_timedate(struct tm *tm, int offset);
 117 int qemu_timedate_diff(struct tm *tm);
 118
 119 /* cutils.c */
 120 void pstrcpy(char *buf, int buf_size, const char *str);
 121 char *pstrcat(char *buf, int buf_size, const char *s);
 122 int strstart(const char *str, const char *val, const char **ptr);
 123 int stristart(const char *str, const char *val, const char **ptr);
 124 int qemu_strnlen(const char *s, int max_len);
 125 time_t mktimegm(struct tm *tm);
 126 int qemu_fls(int i);
 127 int qemu_fdatasync(int fd);
 128
 129 /* path.c */
 130 void init_paths(const char *prefix);
 131 const char *path(const char *pathname);
 132
 133 #define qemu_isalnum(c)         isalnum((unsigned char)(c))
 134 #define qemu_isalpha(c)         isalpha((unsigned char)(c))
 135 #define qemu_iscntrl(c)         iscntrl((unsigned char)(c))
 136 #define qemu_isdigit(c)         isdigit((unsigned char)(c))
 137 #define qemu_isgraph(c)         isgraph((unsigned char)(c))
 138 #define qemu_islower(c)         islower((unsigned char)(c))
 139 #define qemu_isprint(c)         isprint((unsigned char)(c))
 140 #define qemu_ispunct(c)         ispunct((unsigned char)(c))
 141 #define qemu_isspace(c)         isspace((unsigned char)(c))
 142 #define qemu_isupper(c)         isupper((unsigned char)(c))
 143 #define qemu_isxdigit(c)        isxdigit((unsigned char)(c))
 144 #define qemu_tolower(c)         tolower((unsigned char)(c))
 145 #define qemu_toupper(c)         toupper((unsigned char)(c))
 146 #define qemu_isascii(c)         isascii((unsigned char)(c))
 147 #define qemu_toascii(c)         toascii((unsigned char)(c))
 148
 149 void *qemu_malloc(size_t size);
 150 void *qemu_realloc(void *ptr, size_t size);
 151 void *qemu_mallocz(size_t size);
 152 void qemu_free(void *ptr);
 153 char *qemu_strdup(const char *str);
 154 char *qemu_strndup(const char *str, size_t size);
 155
 156 void *get_mmap_addr(unsigned long size);
 157
 158
 159 void qemu_mutex_lock_iothread(void);
 160 void qemu_mutex_unlock_iothread(void);
 161
 162 /* Error handling.  */
 163
 164 void QEMU_NORETURN hw_error(const char *fmt, ...)
 165     __attribute__ ((__format__ (__printf__, 1, 2)));
 166
 167 /* IO callbacks.  */
 168 typedef void IOReadHandler(void *opaque, const uint8_t *buf, int size);
 169 typedef int IOCanRWHandler(void *opaque);
 170 typedef void IOHandler(void *opaque);
 171
 172 struct ParallelIOArg {
 173     void *buffer;
 174     int count;
 175 };
 176
 177 typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
 178
 179 /* A load of opaque types so that device init declarations don't have to
 180    pull in all the real definitions.  */
 181 typedef struct NICInfo NICInfo;
 182 typedef struct HCIInfo HCIInfo;
 183 typedef struct AudioState AudioState;
 184 typedef struct BlockDriverState BlockDriverState;
 185 typedef struct DisplayState DisplayState;
 186 typedef struct DisplayChangeListener DisplayChangeListener;
 187 typedef struct DisplaySurface DisplaySurface;
 188 typedef struct DisplayAllocator DisplayAllocator;
 189 typedef struct PixelFormat PixelFormat;
 190 typedef struct TextConsole TextConsole;
 191 typedef TextConsole QEMUConsole;
 192 typedef struct CharDriverState CharDriverState;
 193 typedef struct MACAddr MACAddr;
 194 typedef struct VLANState VLANState;
 195 typedef struct VLANClientState VLANClientState;
 196 typedef struct QEMUFile QEMUFile;
 197 typedef struct i2c_bus i2c_bus;
 198 typedef struct i2c_slave i2c_slave;
 199 typedef struct SMBusDevice SMBusDevice;
 200 typedef struct QEMUTimer QEMUTimer;
 201 typedef struct PCIBus PCIBus;
 202 typedef struct PCIDevice PCIDevice;
 203 typedef struct SerialState SerialState;
 204 typedef struct IRQState *qemu_irq;
 205 typedef struct PCMCIACardState PCMCIACardState;
 206 typedef struct MouseTransformInfo MouseTransformInfo;
 207 typedef struct uWireSlave uWireSlave;
 208 typedef struct I2SCodec I2SCodec;
 209 typedef struct DeviceState DeviceState;
 210 typedef struct SSIBus SSIBus;
 211
 212 /* CPU save/load.  */
 213 void cpu_save(QEMUFile *f, void *opaque);
 214 int cpu_load(QEMUFile *f, void *opaque, int version_id);
 215
 216 /* Force QEMU to stop what it's doing and service IO */
 217 void qemu_service_io(void);
 218
 219 /* Force QEMU to process pending events */
 220 void qemu_notify_event(void);
 221
 222 /* Unblock cpu */
 223 void qemu_cpu_kick(void *env);
 224 int qemu_cpu_self(void *env);
 225
 226 #ifdef CONFIG_USER_ONLY
 227 #define qemu_init_vcpu(env) do { } while (0)
 228 #else
 229 void qemu_init_vcpu(void *env);
 230 #endif
 231
 232 typedef struct QEMUIOVector {
 233     struct iovec *iov;
 234     int niov;
 235     int nalloc;
 236     size_t size;
 237 } QEMUIOVector;
 238
 239 void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
 240 void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
 241 void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
 242 void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
 243 void qemu_iovec_destroy(QEMUIOVector *qiov);
 244 void qemu_iovec_reset(QEMUIOVector *qiov);
 245 void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
 246 void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
 247
 248 struct Monitor;
 249 typedef struct Monitor Monitor;
 250
 251 /* Convert a byte between binary and BCD.  */
 252 static inline uint8_t to_bcd(uint8_t val)
 253 {
 254     return ((val / 10) << 4) | (val % 10);
 255 }
 256
 257 static inline uint8_t from_bcd(uint8_t val)
 258 {
 259     return ((val >> 4) * 10) + (val & 0x0f);
 260 }
 261
 262 #include "module.h"
 263
 264 #endif /* dyngen-exec.h hack */
 265
 266 #endif