Archipelago » qemu

/*

 * os-win32.c

 *

 * Copyright (c) 2003-2008 Fabrice Bellard

 * Copyright (c) 2010 Red Hat, Inc.

 *

 * QEMU library functions for win32 which are shared between QEMU and

 * the QEMU tools.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include <windows.h>

#include "config-host.h"

#include "sysemu.h"

#include "trace.h"

#include "qemu_socket.h"

void *qemu_oom_check(void *ptr)

{

    if (ptr == NULL) {

        fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());

        abort();

    }

    return ptr;

}

void *qemu_memalign(size_t alignment, size_t size)

{

    void *ptr;

    if (!size) {

        abort();

    }

    ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));

    trace_qemu_memalign(alignment, size, ptr);

    return ptr;

}

void *qemu_vmalloc(size_t size)

{

    void *ptr;

    /* FIXME: this is not exactly optimal solution since VirtualAlloc

       has 64Kb granularity, but at least it guarantees us that the

       memory is page aligned. */

    if (!size) {

        abort();

    }

    ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));

    trace_qemu_vmalloc(size, ptr);

    return ptr;

}

void qemu_vfree(void *ptr)

{

    trace_qemu_vfree(ptr);

    VirtualFree(ptr, 0, MEM_RELEASE);

}

void socket_set_nonblock(int fd)

{

    unsigned long opt = 1;

    ioctlsocket(fd, FIONBIO, &opt);

}

int inet_aton(const char *cp, struct in_addr *ia)

{

    uint32_t addr = inet_addr(cp);

    if (addr == 0xffffffff) {

        return 0;

    }

    ia->s_addr = addr;

    return 1;

}

void qemu_set_cloexec(int fd)

{

}

/* mingw32 needs ffs for compilations without optimization. */

int ffs(int i)

{

    /* Use gcc's builtin ffs. */

    return __builtin_ffs(i);

}

/* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */

#define _W32_FT_OFFSET (116444736000000000ULL)

int qemu_gettimeofday(qemu_timeval *tp)

{

  union {

    unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */

    FILETIME ft;

  }  _now;

  if(tp) {

      GetSystemTimeAsFileTime (&_now.ft);

      tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );

      tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);

  }

  /* Always return 0 as per Open Group Base Specifications Issue 6.

     Do not set errno on error.  */

  return 0;

}