include/sysemu/os-win32.h

   1 /*
   2  * win32 specific declarations
   3  *
   4  * Copyright (c) 2003-2008 Fabrice Bellard
   5  * Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25
  26 #ifndef QEMU_OS_WIN32_H
  27 #define QEMU_OS_WIN32_H
  28
  29 #include <winsock2.h>
  30 #include <windows.h>
  31
  32 #if defined(_WIN64)
  33 /* On w64, setjmp is implemented by _setjmp which needs a second parameter.
  34  * If this parameter is NULL, longjump does no stack unwinding.
  35  * That is what we need for QEMU. Passing the value of register rsp (default)
  36  * lets longjmp try a stack unwinding which will crash with generated code. */
  37 # undef setjmp
  38 # define setjmp(env) _setjmp(env, NULL)
  39 #endif
  40 /* QEMU uses sigsetjmp()/siglongjmp() as the portable way to specify
  41  * "longjmp and don't touch the signal masks". Since we know that the
  42  * savemask parameter will always be zero we can safely define these
  43  * in terms of setjmp/longjmp on Win32.
  44  */
  45 #define sigjmp_buf jmp_buf
  46 #define sigsetjmp(env, savemask) setjmp(env)
  47 #define siglongjmp(env, val) longjmp(env, val)
  48
  49 /* Missing POSIX functions. Don't use MinGW-w64 macros. */
  50 #ifndef CONFIG_LOCALTIME_R
  51 #undef gmtime_r
  52 struct tm *gmtime_r(const time_t *timep, struct tm *result);
  53 #undef localtime_r
  54 struct tm *localtime_r(const time_t *timep, struct tm *result);
  55 #endif /* CONFIG_LOCALTIME_R */
  56
  57 int socket_error(void);
  58
  59 static inline void os_setup_signal_handling(void) {}
  60 static inline void os_daemonize(void) {}
  61 static inline void os_setup_post(void) {}
  62 void os_set_line_buffering(void);
  63 static inline void os_set_proc_name(const char *dummy) {}
  64
  65 int getpagesize(void);
  66
  67 #if !defined(EPROTONOSUPPORT)
  68 # define EPROTONOSUPPORT EINVAL
  69 #endif
  70
  71 int setenv(const char *name, const char *value, int overwrite);
  72
  73 typedef struct {
  74     long tv_sec;
  75     long tv_usec;
  76 } qemu_timeval;
  77 int qemu_gettimeofday(qemu_timeval *tp);
  78
  79 static inline bool is_daemonized(void)
  80 {
  81     return false;
  82 }
  83
  84 static inline int os_mlock(void)
  85 {
  86     return -ENOSYS;
  87 }
  88
  89 #define fsync _commit
  90
  91 #if !defined(lseek)
  92 # define lseek _lseeki64
  93 #endif
  94
  95 int qemu_ftruncate64(int, int64_t);
  96
  97 #if !defined(ftruncate)
  98 # define ftruncate qemu_ftruncate64
  99 #endif
 100
 101 static inline char *realpath(const char *path, char *resolved_path)
 102 {
 103     _fullpath(resolved_path, path, _MAX_PATH);
 104     return resolved_path;
 105 }
 106
 107 #endif