File:  [Qemu by Fabrice Bellard] / qemu / qemu-common.h
Revision 1.1.1.8 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 18:33:50 2018 UTC (3 years, 1 month ago) by root
Branches: qemu, MAIN
CVS tags: qemu0150, qemu0141, qemu0140, HEAD
qemu 0.14.0

    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: typedef struct QEMUTimer QEMUTimer;
   17: typedef struct QEMUFile QEMUFile;
   18: typedef struct QEMUBH QEMUBH;
   19: typedef struct DeviceState DeviceState;
   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 <stdbool.h>
   26: #include <string.h>
   27: #include <strings.h>
   28: #include <inttypes.h>
   29: #include <limits.h>
   30: #include <time.h>
   31: #include <ctype.h>
   32: #include <errno.h>
   33: #include <unistd.h>
   34: #include <fcntl.h>
   35: #include <sys/stat.h>
   36: #include <assert.h>
   37: 
   38: #ifndef O_LARGEFILE
   39: #define O_LARGEFILE 0
   40: #endif
   41: #ifndef O_BINARY
   42: #define O_BINARY 0
   43: #endif
   44: #ifndef MAP_ANONYMOUS
   45: #define MAP_ANONYMOUS MAP_ANON
   46: #endif
   47: #ifndef ENOMEDIUM
   48: #define ENOMEDIUM ENODEV
   49: #endif
   50: #if !defined(ENOTSUP)
   51: #define ENOTSUP 4096
   52: #endif
   53: #ifndef TIME_MAX
   54: #define TIME_MAX LONG_MAX
   55: #endif
   56: 
   57: #ifndef CONFIG_IOVEC
   58: #define CONFIG_IOVEC
   59: struct iovec {
   60:     void *iov_base;
   61:     size_t iov_len;
   62: };
   63: /*
   64:  * Use the same value as Linux for now.
   65:  */
   66: #define IOV_MAX		1024
   67: #else
   68: #include <sys/uio.h>
   69: #endif
   70: 
   71: #if defined __GNUC__
   72: # if (__GNUC__ < 4) || \
   73:      defined(__GNUC_MINOR__) && (__GNUC__ == 4) && (__GNUC_MINOR__ < 4)
   74:    /* gcc versions before 4.4.x don't support gnu_printf, so use printf. */
   75: #  define GCC_ATTR __attribute__((__unused__, format(printf, 1, 2)))
   76: #  define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
   77: # else
   78:    /* Use gnu_printf when supported (qemu uses standard format strings). */
   79: #  define GCC_ATTR __attribute__((__unused__, format(gnu_printf, 1, 2)))
   80: #  define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
   81: # endif
   82: #else
   83: #define GCC_ATTR /**/
   84: #define GCC_FMT_ATTR(n, m)
   85: #endif
   86: 
   87: typedef int (*fprintf_function)(FILE *f, const char *fmt, ...)
   88:     GCC_FMT_ATTR(2, 3);
   89: 
   90: #ifdef _WIN32
   91: #define fsync _commit
   92: #define lseek _lseeki64
   93: int qemu_ftruncate64(int, int64_t);
   94: #define ftruncate qemu_ftruncate64
   95: 
   96: static inline char *realpath(const char *path, char *resolved_path)
   97: {
   98:     _fullpath(resolved_path, path, _MAX_PATH);
   99:     return resolved_path;
  100: }
  101: 
  102: #define PRId64 "I64d"
  103: #define PRIx64 "I64x"
  104: #define PRIu64 "I64u"
  105: #define PRIo64 "I64o"
  106: #endif
  107: 
  108: /* FIXME: Remove NEED_CPU_H.  */
  109: #ifndef NEED_CPU_H
  110: 
  111: #include <setjmp.h>
  112: #include "osdep.h"
  113: #include "bswap.h"
  114: 
  115: #else
  116: 
  117: #include "cpu.h"
  118: 
  119: #endif /* !defined(NEED_CPU_H) */
  120: 
  121: /* bottom halves */
  122: typedef void QEMUBHFunc(void *opaque);
  123: 
  124: void async_context_push(void);
  125: void async_context_pop(void);
  126: int get_async_context_id(void);
  127: 
  128: QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque);
  129: void qemu_bh_schedule(QEMUBH *bh);
  130: /* Bottom halfs that are scheduled from a bottom half handler are instantly
  131:  * invoked.  This can create an infinite loop if a bottom half handler
  132:  * schedules itself.  qemu_bh_schedule_idle() avoids this infinite loop by
  133:  * ensuring that the bottom half isn't executed until the next main loop
  134:  * iteration.
  135:  */
  136: void qemu_bh_schedule_idle(QEMUBH *bh);
  137: void qemu_bh_cancel(QEMUBH *bh);
  138: void qemu_bh_delete(QEMUBH *bh);
  139: int qemu_bh_poll(void);
  140: void qemu_bh_update_timeout(int *timeout);
  141: 
  142: void qemu_get_timedate(struct tm *tm, int offset);
  143: int qemu_timedate_diff(struct tm *tm);
  144: 
  145: /* cutils.c */
  146: void pstrcpy(char *buf, int buf_size, const char *str);
  147: char *pstrcat(char *buf, int buf_size, const char *s);
  148: int strstart(const char *str, const char *val, const char **ptr);
  149: int stristart(const char *str, const char *val, const char **ptr);
  150: int qemu_strnlen(const char *s, int max_len);
  151: time_t mktimegm(struct tm *tm);
  152: int qemu_fls(int i);
  153: int qemu_fdatasync(int fd);
  154: int fcntl_setfl(int fd, int flag);
  155: 
  156: /*
  157:  * strtosz() suffixes used to specify the default treatment of an
  158:  * argument passed to strtosz() without an explicit suffix.
  159:  * These should be defined using upper case characters in the range
  160:  * A-Z, as strtosz() will use qemu_toupper() on the given argument
  161:  * prior to comparison.
  162:  */
  163: #define STRTOSZ_DEFSUFFIX_TB	'T'
  164: #define STRTOSZ_DEFSUFFIX_GB	'G'
  165: #define STRTOSZ_DEFSUFFIX_MB	'M'
  166: #define STRTOSZ_DEFSUFFIX_KB	'K'
  167: #define STRTOSZ_DEFSUFFIX_B	'B'
  168: int64_t strtosz(const char *nptr, char **end);
  169: int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
  170: 
  171: /* path.c */
  172: void init_paths(const char *prefix);
  173: const char *path(const char *pathname);
  174: 
  175: #define qemu_isalnum(c)		isalnum((unsigned char)(c))
  176: #define qemu_isalpha(c)		isalpha((unsigned char)(c))
  177: #define qemu_iscntrl(c)		iscntrl((unsigned char)(c))
  178: #define qemu_isdigit(c)		isdigit((unsigned char)(c))
  179: #define qemu_isgraph(c)		isgraph((unsigned char)(c))
  180: #define qemu_islower(c)		islower((unsigned char)(c))
  181: #define qemu_isprint(c)		isprint((unsigned char)(c))
  182: #define qemu_ispunct(c)		ispunct((unsigned char)(c))
  183: #define qemu_isspace(c)		isspace((unsigned char)(c))
  184: #define qemu_isupper(c)		isupper((unsigned char)(c))
  185: #define qemu_isxdigit(c)	isxdigit((unsigned char)(c))
  186: #define qemu_tolower(c)		tolower((unsigned char)(c))
  187: #define qemu_toupper(c)		toupper((unsigned char)(c))
  188: #define qemu_isascii(c)		isascii((unsigned char)(c))
  189: #define qemu_toascii(c)		toascii((unsigned char)(c))
  190: 
  191: #ifdef _WIN32
  192: /* ffs() in oslib-win32.c for WIN32, strings.h for the rest of the world */
  193: int ffs(int i);
  194: #endif
  195: 
  196: void *qemu_oom_check(void *ptr);
  197: void *qemu_malloc(size_t size);
  198: void *qemu_realloc(void *ptr, size_t size);
  199: void *qemu_mallocz(size_t size);
  200: void qemu_free(void *ptr);
  201: char *qemu_strdup(const char *str);
  202: char *qemu_strndup(const char *str, size_t size);
  203: 
  204: void qemu_mutex_lock_iothread(void);
  205: void qemu_mutex_unlock_iothread(void);
  206: 
  207: int qemu_open(const char *name, int flags, ...);
  208: ssize_t qemu_write_full(int fd, const void *buf, size_t count)
  209:     QEMU_WARN_UNUSED_RESULT;
  210: void qemu_set_cloexec(int fd);
  211: 
  212: #ifndef _WIN32
  213: int qemu_eventfd(int pipefd[2]);
  214: int qemu_pipe(int pipefd[2]);
  215: #endif
  216: 
  217: /* Error handling.  */
  218: 
  219: void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
  220: 
  221: /* IO callbacks.  */
  222: typedef void IOReadHandler(void *opaque, const uint8_t *buf, int size);
  223: typedef int IOCanReadHandler(void *opaque);
  224: typedef void IOHandler(void *opaque);
  225: 
  226: struct ParallelIOArg {
  227:     void *buffer;
  228:     int count;
  229: };
  230: 
  231: typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
  232: 
  233: /* A load of opaque types so that device init declarations don't have to
  234:    pull in all the real definitions.  */
  235: typedef struct NICInfo NICInfo;
  236: typedef struct HCIInfo HCIInfo;
  237: typedef struct AudioState AudioState;
  238: typedef struct BlockDriverState BlockDriverState;
  239: typedef struct DriveInfo DriveInfo;
  240: typedef struct DisplayState DisplayState;
  241: typedef struct DisplayChangeListener DisplayChangeListener;
  242: typedef struct DisplaySurface DisplaySurface;
  243: typedef struct DisplayAllocator DisplayAllocator;
  244: typedef struct PixelFormat PixelFormat;
  245: typedef struct TextConsole TextConsole;
  246: typedef TextConsole QEMUConsole;
  247: typedef struct CharDriverState CharDriverState;
  248: typedef struct MACAddr MACAddr;
  249: typedef struct VLANState VLANState;
  250: typedef struct VLANClientState VLANClientState;
  251: typedef struct i2c_bus i2c_bus;
  252: typedef struct i2c_slave i2c_slave;
  253: typedef struct SMBusDevice SMBusDevice;
  254: typedef struct PCIHostState PCIHostState;
  255: typedef struct PCIExpressHost PCIExpressHost;
  256: typedef struct PCIBus PCIBus;
  257: typedef struct PCIDevice PCIDevice;
  258: typedef struct PCIExpressDevice PCIExpressDevice;
  259: typedef struct PCIBridge PCIBridge;
  260: typedef struct PCIEAERMsg PCIEAERMsg;
  261: typedef struct PCIEAERLog PCIEAERLog;
  262: typedef struct PCIEAERErr PCIEAERErr;
  263: typedef struct PCIEPort PCIEPort;
  264: typedef struct PCIESlot PCIESlot;
  265: typedef struct SerialState SerialState;
  266: typedef struct IRQState *qemu_irq;
  267: typedef struct PCMCIACardState PCMCIACardState;
  268: typedef struct MouseTransformInfo MouseTransformInfo;
  269: typedef struct uWireSlave uWireSlave;
  270: typedef struct I2SCodec I2SCodec;
  271: typedef struct SSIBus SSIBus;
  272: typedef struct EventNotifier EventNotifier;
  273: typedef struct VirtIODevice VirtIODevice;
  274: 
  275: typedef uint64_t pcibus_t;
  276: 
  277: void cpu_exec_init_all(unsigned long tb_size);
  278: 
  279: /* CPU save/load.  */
  280: void cpu_save(QEMUFile *f, void *opaque);
  281: int cpu_load(QEMUFile *f, void *opaque, int version_id);
  282: 
  283: /* Force QEMU to stop what it's doing and service IO */
  284: void qemu_service_io(void);
  285: 
  286: /* Force QEMU to process pending events */
  287: void qemu_notify_event(void);
  288: 
  289: /* Unblock cpu */
  290: void qemu_cpu_kick(void *env);
  291: int qemu_cpu_self(void *env);
  292: 
  293: /* work queue */
  294: struct qemu_work_item {
  295:     struct qemu_work_item *next;
  296:     void (*func)(void *data);
  297:     void *data;
  298:     int done;
  299: };
  300: 
  301: #ifdef CONFIG_USER_ONLY
  302: #define qemu_init_vcpu(env) do { } while (0)
  303: #else
  304: void qemu_init_vcpu(void *env);
  305: #endif
  306: 
  307: typedef struct QEMUIOVector {
  308:     struct iovec *iov;
  309:     int niov;
  310:     int nalloc;
  311:     size_t size;
  312: } QEMUIOVector;
  313: 
  314: void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
  315: void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
  316: void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
  317: void qemu_iovec_copy(QEMUIOVector *dst, QEMUIOVector *src, uint64_t skip,
  318:     size_t size);
  319: void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
  320: void qemu_iovec_destroy(QEMUIOVector *qiov);
  321: void qemu_iovec_reset(QEMUIOVector *qiov);
  322: void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
  323: void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
  324: void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
  325: void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
  326:                             size_t skip);
  327: 
  328: struct Monitor;
  329: typedef struct Monitor Monitor;
  330: 
  331: /* Convert a byte between binary and BCD.  */
  332: static inline uint8_t to_bcd(uint8_t val)
  333: {
  334:     return ((val / 10) << 4) | (val % 10);
  335: }
  336: 
  337: static inline uint8_t from_bcd(uint8_t val)
  338: {
  339:     return ((val >> 4) * 10) + (val & 0x0f);
  340: }
  341: 
  342: /* compute with 96 bit intermediate result: (a*b)/c */
  343: static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
  344: {
  345:     union {
  346:         uint64_t ll;
  347:         struct {
  348: #ifdef HOST_WORDS_BIGENDIAN
  349:             uint32_t high, low;
  350: #else
  351:             uint32_t low, high;
  352: #endif
  353:         } l;
  354:     } u, res;
  355:     uint64_t rl, rh;
  356: 
  357:     u.ll = a;
  358:     rl = (uint64_t)u.l.low * (uint64_t)b;
  359:     rh = (uint64_t)u.l.high * (uint64_t)b;
  360:     rh += (rl >> 32);
  361:     res.l.high = rh / c;
  362:     res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
  363:     return res.ll;
  364: }
  365: 
  366: #include "module.h"
  367: 
  368: #endif

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