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 <glib.h>

#include <stdlib.h>

#include "config-host.h"

#include "sysemu/sysemu.h"

#include "qemu/main-loop.h"

#include "trace.h"

#include "qemu/sockets.h"

/* this must come after including "trace.h" */

#include <shlobj.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_anon_ram_alloc(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. */

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

    trace_qemu_anon_ram_alloc(size, ptr);

    return ptr;

}

void qemu_vfree(void *ptr)

{

    trace_qemu_vfree(ptr);

    if (ptr) {

        VirtualFree(ptr, 0, MEM_RELEASE);

    }

}

void qemu_anon_ram_free(void *ptr, size_t size)

{

    trace_qemu_anon_ram_free(ptr, size);

    if (ptr) {

        VirtualFree(ptr, 0, MEM_RELEASE);

    }

}

/* FIXME: add proper locking */

struct tm *gmtime_r(const time_t *timep, struct tm *result)

{

    struct tm *p = gmtime(timep);

    memset(result, 0, sizeof(*result));

    if (p) {

        *result = *p;

        p = result;

    }

    return p;

}

/* FIXME: add proper locking */

struct tm *localtime_r(const time_t *timep, struct tm *result)

{

    struct tm *p = localtime(timep);

    memset(result, 0, sizeof(*result));

    if (p) {

        *result = *p;

        p = result;

    }

    return p;

}

void qemu_set_block(int fd)

{

    unsigned long opt = 0;

    WSAEventSelect(fd, NULL, 0);

    ioctlsocket(fd, FIONBIO, &opt);

}

void qemu_set_nonblock(int fd)

{

    unsigned long opt = 1;

    ioctlsocket(fd, FIONBIO, &opt);

    qemu_fd_register(fd);

}

int socket_set_fast_reuse(int fd)

{

    /* Enabling the reuse of an endpoint that was used by a socket still in

     * TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows

     * fast reuse is the default and SO_REUSEADDR does strange things. So we

     * don't have to do anything here. More info can be found at:

     * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */

    return 0;

}

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)

{

}

/* 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;

}

int qemu_get_thread_id(void)

{

    return GetCurrentThreadId();

}

char *

qemu_get_local_state_pathname(const char *relative_pathname)

{

    HRESULT result;

    char base_path[MAX_PATH+1] = "";

    result = SHGetFolderPath(NULL, CSIDL_COMMON_APPDATA, NULL,

                             /* SHGFP_TYPE_CURRENT */ 0, base_path);

    if (result != S_OK) {

        /* misconfigured environment */

        g_critical("CSIDL_COMMON_APPDATA unavailable: %ld", (long)result);

        abort();

    }

    return g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", base_path,

                           relative_pathname);

}

void qemu_set_tty_echo(int fd, bool echo)

{

    HANDLE handle = (HANDLE)_get_osfhandle(fd);

    DWORD dwMode = 0;

    if (handle == INVALID_HANDLE_VALUE) {

        return;

    }

    GetConsoleMode(handle, &dwMode);

    if (echo) {

        SetConsoleMode(handle, dwMode | ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT);

    } else {

        SetConsoleMode(handle,

                       dwMode & ~(ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT));

    }

}

static char exec_dir[PATH_MAX];

void qemu_init_exec_dir(const char *argv0)

{

    char *p;

    char buf[MAX_PATH];

    DWORD len;

    len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);

    if (len == 0) {

        return;

    }

    buf[len] = 0;

    p = buf + len - 1;

    while (p != buf && *p != '\\') {

        p--;

    }

    *p = 0;

    if (access(buf, R_OK) == 0) {

        pstrcpy(exec_dir, sizeof(exec_dir), buf);

    }

}

char *qemu_get_exec_dir(void)

{

    return g_strdup(exec_dir);

}