File:  [Qemu by Fabrice Bellard] / qemu / qemu-common.h
Revision 1.1.1.5 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 17:57:28 2018 UTC (2 years, 4 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu0123, HEAD
qemu 0.12.3

    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: void qemu_set_cloexec(int fd);
  165: 
  166: #ifndef _WIN32
  167: int qemu_pipe(int pipefd[2]);
  168: #endif
  169: 
  170: /* Error handling.  */
  171: 
  172: void QEMU_NORETURN hw_error(const char *fmt, ...)
  173:     __attribute__ ((__format__ (__printf__, 1, 2)));
  174: 
  175: /* IO callbacks.  */
  176: typedef void IOReadHandler(void *opaque, const uint8_t *buf, int size);
  177: typedef int IOCanRWHandler(void *opaque);
  178: typedef void IOHandler(void *opaque);
  179: 
  180: struct ParallelIOArg {
  181:     void *buffer;
  182:     int count;
  183: };
  184: 
  185: typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
  186: 
  187: /* A load of opaque types so that device init declarations don't have to
  188:    pull in all the real definitions.  */
  189: typedef struct NICInfo NICInfo;
  190: typedef struct HCIInfo HCIInfo;
  191: typedef struct AudioState AudioState;
  192: typedef struct BlockDriverState BlockDriverState;
  193: typedef struct DisplayState DisplayState;
  194: typedef struct DisplayChangeListener DisplayChangeListener;
  195: typedef struct DisplaySurface DisplaySurface;
  196: typedef struct DisplayAllocator DisplayAllocator;
  197: typedef struct PixelFormat PixelFormat;
  198: typedef struct TextConsole TextConsole;
  199: typedef TextConsole QEMUConsole;
  200: typedef struct CharDriverState CharDriverState;
  201: typedef struct MACAddr MACAddr;
  202: typedef struct VLANState VLANState;
  203: typedef struct VLANClientState VLANClientState;
  204: typedef struct QEMUFile QEMUFile;
  205: typedef struct i2c_bus i2c_bus;
  206: typedef struct i2c_slave i2c_slave;
  207: typedef struct SMBusDevice SMBusDevice;
  208: typedef struct QEMUTimer QEMUTimer;
  209: typedef struct PCIHostState PCIHostState;
  210: typedef struct PCIExpressHost PCIExpressHost;
  211: typedef struct PCIBus PCIBus;
  212: typedef struct PCIDevice PCIDevice;
  213: typedef struct SerialState SerialState;
  214: typedef struct IRQState *qemu_irq;
  215: typedef struct PCMCIACardState PCMCIACardState;
  216: typedef struct MouseTransformInfo MouseTransformInfo;
  217: typedef struct uWireSlave uWireSlave;
  218: typedef struct I2SCodec I2SCodec;
  219: typedef struct DeviceState DeviceState;
  220: typedef struct SSIBus SSIBus;
  221: 
  222: /* CPU save/load.  */
  223: void cpu_save(QEMUFile *f, void *opaque);
  224: int cpu_load(QEMUFile *f, void *opaque, int version_id);
  225: 
  226: /* Force QEMU to stop what it's doing and service IO */
  227: void qemu_service_io(void);
  228: 
  229: /* Force QEMU to process pending events */
  230: void qemu_notify_event(void);
  231: 
  232: /* Unblock cpu */
  233: void qemu_cpu_kick(void *env);
  234: int qemu_cpu_self(void *env);
  235: 
  236: #ifdef CONFIG_USER_ONLY
  237: #define qemu_init_vcpu(env) do { } while (0)
  238: #else
  239: void qemu_init_vcpu(void *env);
  240: #endif
  241: 
  242: typedef struct QEMUIOVector {
  243:     struct iovec *iov;
  244:     int niov;
  245:     int nalloc;
  246:     size_t size;
  247: } QEMUIOVector;
  248: 
  249: void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
  250: void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
  251: void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
  252: void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
  253: void qemu_iovec_destroy(QEMUIOVector *qiov);
  254: void qemu_iovec_reset(QEMUIOVector *qiov);
  255: void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
  256: void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
  257: 
  258: struct Monitor;
  259: typedef struct Monitor Monitor;
  260: 
  261: /* Convert a byte between binary and BCD.  */
  262: static inline uint8_t to_bcd(uint8_t val)
  263: {
  264:     return ((val / 10) << 4) | (val % 10);
  265: }
  266: 
  267: static inline uint8_t from_bcd(uint8_t val)
  268: {
  269:     return ((val >> 4) * 10) + (val & 0x0f);
  270: }
  271: 
  272: #include "module.h"
  273: 
  274: #endif /* dyngen-exec.h hack */
  275: 
  276: #endif

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