File:  [Qemu by Fabrice Bellard] / qemu / qemu-common.h
Revision 1.1.1.9 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 18:56:06 2018 UTC (2 years, 11 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu1000, qemu0151, HEAD
qemu 0.15.1

    1: /* Common header file that is included by all of qemu.  */
    2: #ifndef QEMU_COMMON_H
    3: #define QEMU_COMMON_H
    4: 
    5: #include "compiler.h"
    6: #include "config-host.h"
    7: 
    8: #define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
    9: 
   10: typedef struct QEMUTimer QEMUTimer;
   11: typedef struct QEMUFile QEMUFile;
   12: typedef struct QEMUBH QEMUBH;
   13: typedef struct DeviceState DeviceState;
   14: 
   15: struct Monitor;
   16: typedef struct Monitor Monitor;
   17: 
   18: /* we put basic includes here to avoid repeating them in device drivers */
   19: #include <stdlib.h>
   20: #include <stdio.h>
   21: #include <stdarg.h>
   22: #include <stdbool.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 <sys/time.h>
   34: #include <assert.h>
   35: #include <signal.h>
   36: 
   37: #ifdef _WIN32
   38: #include "qemu-os-win32.h"
   39: #endif
   40: 
   41: #ifdef CONFIG_POSIX
   42: #include "qemu-os-posix.h"
   43: #endif
   44: 
   45: #ifndef O_LARGEFILE
   46: #define O_LARGEFILE 0
   47: #endif
   48: #ifndef O_BINARY
   49: #define O_BINARY 0
   50: #endif
   51: #ifndef MAP_ANONYMOUS
   52: #define MAP_ANONYMOUS MAP_ANON
   53: #endif
   54: #ifndef ENOMEDIUM
   55: #define ENOMEDIUM ENODEV
   56: #endif
   57: #if !defined(ENOTSUP)
   58: #define ENOTSUP 4096
   59: #endif
   60: #ifndef TIME_MAX
   61: #define TIME_MAX LONG_MAX
   62: #endif
   63: 
   64: #ifndef CONFIG_IOVEC
   65: #define CONFIG_IOVEC
   66: struct iovec {
   67:     void *iov_base;
   68:     size_t iov_len;
   69: };
   70: /*
   71:  * Use the same value as Linux for now.
   72:  */
   73: #define IOV_MAX		1024
   74: #else
   75: #include <sys/uio.h>
   76: #endif
   77: 
   78: typedef int (*fprintf_function)(FILE *f, const char *fmt, ...)
   79:     GCC_FMT_ATTR(2, 3);
   80: 
   81: #ifdef _WIN32
   82: #define fsync _commit
   83: #define lseek _lseeki64
   84: int qemu_ftruncate64(int, int64_t);
   85: #define ftruncate qemu_ftruncate64
   86: 
   87: static inline char *realpath(const char *path, char *resolved_path)
   88: {
   89:     _fullpath(resolved_path, path, _MAX_PATH);
   90:     return resolved_path;
   91: }
   92: #endif
   93: 
   94: /* FIXME: Remove NEED_CPU_H.  */
   95: #ifndef NEED_CPU_H
   96: 
   97: #include "osdep.h"
   98: #include "bswap.h"
   99: 
  100: #else
  101: 
  102: #include "cpu.h"
  103: 
  104: #endif /* !defined(NEED_CPU_H) */
  105: 
  106: /* main function, renamed */
  107: #if defined(CONFIG_COCOA)
  108: int qemu_main(int argc, char **argv, char **envp);
  109: #endif
  110: 
  111: /* bottom halves */
  112: typedef void QEMUBHFunc(void *opaque);
  113: 
  114: void async_context_push(void);
  115: void async_context_pop(void);
  116: int get_async_context_id(void);
  117: 
  118: QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque);
  119: void qemu_bh_schedule(QEMUBH *bh);
  120: /* Bottom halfs that are scheduled from a bottom half handler are instantly
  121:  * invoked.  This can create an infinite loop if a bottom half handler
  122:  * schedules itself.  qemu_bh_schedule_idle() avoids this infinite loop by
  123:  * ensuring that the bottom half isn't executed until the next main loop
  124:  * iteration.
  125:  */
  126: void qemu_bh_schedule_idle(QEMUBH *bh);
  127: void qemu_bh_cancel(QEMUBH *bh);
  128: void qemu_bh_delete(QEMUBH *bh);
  129: int qemu_bh_poll(void);
  130: void qemu_bh_update_timeout(int *timeout);
  131: 
  132: void qemu_get_timedate(struct tm *tm, int offset);
  133: int qemu_timedate_diff(struct tm *tm);
  134: 
  135: /* cutils.c */
  136: void pstrcpy(char *buf, int buf_size, const char *str);
  137: char *pstrcat(char *buf, int buf_size, const char *s);
  138: int strstart(const char *str, const char *val, const char **ptr);
  139: int stristart(const char *str, const char *val, const char **ptr);
  140: int qemu_strnlen(const char *s, int max_len);
  141: time_t mktimegm(struct tm *tm);
  142: int qemu_fls(int i);
  143: int qemu_fdatasync(int fd);
  144: int fcntl_setfl(int fd, int flag);
  145: 
  146: /*
  147:  * strtosz() suffixes used to specify the default treatment of an
  148:  * argument passed to strtosz() without an explicit suffix.
  149:  * These should be defined using upper case characters in the range
  150:  * A-Z, as strtosz() will use qemu_toupper() on the given argument
  151:  * prior to comparison.
  152:  */
  153: #define STRTOSZ_DEFSUFFIX_TB	'T'
  154: #define STRTOSZ_DEFSUFFIX_GB	'G'
  155: #define STRTOSZ_DEFSUFFIX_MB	'M'
  156: #define STRTOSZ_DEFSUFFIX_KB	'K'
  157: #define STRTOSZ_DEFSUFFIX_B	'B'
  158: int64_t strtosz(const char *nptr, char **end);
  159: int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
  160: 
  161: /* path.c */
  162: void init_paths(const char *prefix);
  163: const char *path(const char *pathname);
  164: 
  165: #define qemu_isalnum(c)		isalnum((unsigned char)(c))
  166: #define qemu_isalpha(c)		isalpha((unsigned char)(c))
  167: #define qemu_iscntrl(c)		iscntrl((unsigned char)(c))
  168: #define qemu_isdigit(c)		isdigit((unsigned char)(c))
  169: #define qemu_isgraph(c)		isgraph((unsigned char)(c))
  170: #define qemu_islower(c)		islower((unsigned char)(c))
  171: #define qemu_isprint(c)		isprint((unsigned char)(c))
  172: #define qemu_ispunct(c)		ispunct((unsigned char)(c))
  173: #define qemu_isspace(c)		isspace((unsigned char)(c))
  174: #define qemu_isupper(c)		isupper((unsigned char)(c))
  175: #define qemu_isxdigit(c)	isxdigit((unsigned char)(c))
  176: #define qemu_tolower(c)		tolower((unsigned char)(c))
  177: #define qemu_toupper(c)		toupper((unsigned char)(c))
  178: #define qemu_isascii(c)		isascii((unsigned char)(c))
  179: #define qemu_toascii(c)		toascii((unsigned char)(c))
  180: 
  181: void *qemu_oom_check(void *ptr);
  182: void *qemu_malloc(size_t size);
  183: void *qemu_realloc(void *ptr, size_t size);
  184: void *qemu_mallocz(size_t size);
  185: void qemu_free(void *ptr);
  186: char *qemu_strdup(const char *str);
  187: char *qemu_strndup(const char *str, size_t size);
  188: 
  189: void qemu_mutex_lock_iothread(void);
  190: void qemu_mutex_unlock_iothread(void);
  191: 
  192: int qemu_open(const char *name, int flags, ...);
  193: ssize_t qemu_write_full(int fd, const void *buf, size_t count)
  194:     QEMU_WARN_UNUSED_RESULT;
  195: void qemu_set_cloexec(int fd);
  196: 
  197: #ifndef _WIN32
  198: int qemu_add_child_watch(pid_t pid);
  199: int qemu_eventfd(int pipefd[2]);
  200: int qemu_pipe(int pipefd[2]);
  201: #endif
  202: 
  203: #ifdef _WIN32
  204: #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
  205: #else
  206: #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
  207: #endif
  208: 
  209: /* Error handling.  */
  210: 
  211: void QEMU_NORETURN hw_error(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
  212: 
  213: /* IO callbacks.  */
  214: typedef void IOReadHandler(void *opaque, const uint8_t *buf, int size);
  215: typedef int IOCanReadHandler(void *opaque);
  216: typedef void IOHandler(void *opaque);
  217: 
  218: void qemu_iohandler_fill(int *pnfds, fd_set *readfds, fd_set *writefds, fd_set *xfds);
  219: void qemu_iohandler_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds, int rc);
  220: 
  221: struct ParallelIOArg {
  222:     void *buffer;
  223:     int count;
  224: };
  225: 
  226: typedef int (*DMA_transfer_handler) (void *opaque, int nchan, int pos, int size);
  227: 
  228: /* A load of opaque types so that device init declarations don't have to
  229:    pull in all the real definitions.  */
  230: typedef struct NICInfo NICInfo;
  231: typedef struct HCIInfo HCIInfo;
  232: typedef struct AudioState AudioState;
  233: typedef struct BlockDriverState BlockDriverState;
  234: typedef struct DriveInfo DriveInfo;
  235: typedef struct DisplayState DisplayState;
  236: typedef struct DisplayChangeListener DisplayChangeListener;
  237: typedef struct DisplaySurface DisplaySurface;
  238: typedef struct DisplayAllocator DisplayAllocator;
  239: typedef struct PixelFormat PixelFormat;
  240: typedef struct TextConsole TextConsole;
  241: typedef TextConsole QEMUConsole;
  242: typedef struct CharDriverState CharDriverState;
  243: typedef struct MACAddr MACAddr;
  244: typedef struct VLANState VLANState;
  245: typedef struct VLANClientState VLANClientState;
  246: typedef struct i2c_bus i2c_bus;
  247: typedef struct i2c_slave i2c_slave;
  248: typedef struct SMBusDevice SMBusDevice;
  249: typedef struct PCIHostState PCIHostState;
  250: typedef struct PCIExpressHost PCIExpressHost;
  251: typedef struct PCIBus PCIBus;
  252: typedef struct PCIDevice PCIDevice;
  253: typedef struct PCIExpressDevice PCIExpressDevice;
  254: typedef struct PCIBridge PCIBridge;
  255: typedef struct PCIEAERMsg PCIEAERMsg;
  256: typedef struct PCIEAERLog PCIEAERLog;
  257: typedef struct PCIEAERErr PCIEAERErr;
  258: typedef struct PCIEPort PCIEPort;
  259: typedef struct PCIESlot PCIESlot;
  260: typedef struct SerialState SerialState;
  261: typedef struct IRQState *qemu_irq;
  262: typedef struct PCMCIACardState PCMCIACardState;
  263: typedef struct MouseTransformInfo MouseTransformInfo;
  264: typedef struct uWireSlave uWireSlave;
  265: typedef struct I2SCodec I2SCodec;
  266: typedef struct SSIBus SSIBus;
  267: typedef struct EventNotifier EventNotifier;
  268: typedef struct VirtIODevice VirtIODevice;
  269: 
  270: typedef uint64_t pcibus_t;
  271: 
  272: void cpu_exec_init_all(unsigned long tb_size);
  273: 
  274: /* CPU save/load.  */
  275: void cpu_save(QEMUFile *f, void *opaque);
  276: int cpu_load(QEMUFile *f, void *opaque, int version_id);
  277: 
  278: /* Force QEMU to stop what it's doing and service IO */
  279: void qemu_service_io(void);
  280: 
  281: /* Force QEMU to process pending events */
  282: void qemu_notify_event(void);
  283: 
  284: /* Unblock cpu */
  285: void qemu_cpu_kick(void *env);
  286: void qemu_cpu_kick_self(void);
  287: int qemu_cpu_is_self(void *env);
  288: bool all_cpu_threads_idle(void);
  289: 
  290: /* work queue */
  291: struct qemu_work_item {
  292:     struct qemu_work_item *next;
  293:     void (*func)(void *data);
  294:     void *data;
  295:     int done;
  296: };
  297: 
  298: #ifdef CONFIG_USER_ONLY
  299: #define qemu_init_vcpu(env) do { } while (0)
  300: #else
  301: void qemu_init_vcpu(void *env);
  302: #endif
  303: 
  304: typedef struct QEMUIOVector {
  305:     struct iovec *iov;
  306:     int niov;
  307:     int nalloc;
  308:     size_t size;
  309: } QEMUIOVector;
  310: 
  311: void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint);
  312: void qemu_iovec_init_external(QEMUIOVector *qiov, struct iovec *iov, int niov);
  313: void qemu_iovec_add(QEMUIOVector *qiov, void *base, size_t len);
  314: void qemu_iovec_copy(QEMUIOVector *dst, QEMUIOVector *src, uint64_t skip,
  315:     size_t size);
  316: void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size);
  317: void qemu_iovec_destroy(QEMUIOVector *qiov);
  318: void qemu_iovec_reset(QEMUIOVector *qiov);
  319: void qemu_iovec_to_buffer(QEMUIOVector *qiov, void *buf);
  320: void qemu_iovec_from_buffer(QEMUIOVector *qiov, const void *buf, size_t count);
  321: void qemu_iovec_memset(QEMUIOVector *qiov, int c, size_t count);
  322: void qemu_iovec_memset_skip(QEMUIOVector *qiov, int c, size_t count,
  323:                             size_t skip);
  324: 
  325: void qemu_progress_init(int enabled, float min_skip);
  326: void qemu_progress_end(void);
  327: void qemu_progress_print(float delta, int max);
  328: 
  329: #define QEMU_FILE_TYPE_BIOS   0
  330: #define QEMU_FILE_TYPE_KEYMAP 1
  331: char *qemu_find_file(int type, const char *name);
  332: 
  333: /* OS specific functions */
  334: void os_setup_early_signal_handling(void);
  335: char *os_find_datadir(const char *argv0);
  336: void os_parse_cmd_args(int index, const char *optarg);
  337: void os_pidfile_error(void);
  338: 
  339: /* Convert a byte between binary and BCD.  */
  340: static inline uint8_t to_bcd(uint8_t val)
  341: {
  342:     return ((val / 10) << 4) | (val % 10);
  343: }
  344: 
  345: static inline uint8_t from_bcd(uint8_t val)
  346: {
  347:     return ((val >> 4) * 10) + (val & 0x0f);
  348: }
  349: 
  350: /* compute with 96 bit intermediate result: (a*b)/c */
  351: static inline uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
  352: {
  353:     union {
  354:         uint64_t ll;
  355:         struct {
  356: #ifdef HOST_WORDS_BIGENDIAN
  357:             uint32_t high, low;
  358: #else
  359:             uint32_t low, high;
  360: #endif
  361:         } l;
  362:     } u, res;
  363:     uint64_t rl, rh;
  364: 
  365:     u.ll = a;
  366:     rl = (uint64_t)u.l.low * (uint64_t)b;
  367:     rh = (uint64_t)u.l.high * (uint64_t)b;
  368:     rh += (rl >> 32);
  369:     res.l.high = rh / c;
  370:     res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
  371:     return res.ll;
  372: }
  373: 
  374: #include "module.h"
  375: 
  376: #endif

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