diff --git a/gps/gps_qemu.c b/gps/gps_qemu.c
new file mode 100644
index 0000000..67737c1
--- /dev/null
+++ b/gps/gps_qemu.c
@@ -0,0 +1,945 @@
+
+#include <errno.h>
+#include <pthread.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <sys/epoll.h>
+#include <math.h>
+#include <time.h>
+
+#define  LOG_TAG  "gps_qemu"
+#include <cutils/log.h>
+#include <cutils/sockets.h>
+#include <cutils/properties.h>
+#include <hardware/gps.h>
+
+/* the name of the qemud-controlled socket */
+#define  QEMUD_SOCKET_NAME  "qemud_gps"
+
+#define  GPS_DEBUG  0
+
+#if GPS_DEBUG
+#  define  D(...)   LOGD(__VA_ARGS__)
+#else
+#  define  D(...)   ((void)0)
+#endif
+
+
+/*****************************************************************/
+/*****************************************************************/
+/*****                                                       *****/
+/*****       N M E A   T O K E N I Z E R                     *****/
+/*****                                                       *****/
+/*****************************************************************/
+/*****************************************************************/
+
+typedef struct {
+    const char*  p;
+    const char*  end;
+} Token;
+
+#define  MAX_NMEA_TOKENS  16
+
+typedef struct {
+    int     count;
+    Token   tokens[ MAX_NMEA_TOKENS ];
+} NmeaTokenizer;
+
+static int
+nmea_tokenizer_init( NmeaTokenizer*  t, const char*  p, const char*  end )
+{
+    int    count = 0;
+    char*  q;
+
+    // the initial '$' is optional
+    if (p < end && p[0] == '$')
+        p += 1;
+
+    // remove trailing newline
+    if (end > p && end[-1] == '\n') {
+        end -= 1;
+        if (end > p && end[-1] == '\r')
+            end -= 1;
+    }
+
+    // get rid of checksum at the end of the sentecne
+    if (end >= p+3 && end[-3] == '*') {
+        end -= 3;
+    }
+
+    while (p < end) {
+        const char*  q = p;
+
+        q = memchr(p, ',', end-p);
+        if (q == NULL)
+            q = end;
+
+        if (q > p) {
+            if (count < MAX_NMEA_TOKENS) {
+                t->tokens[count].p   = p;
+                t->tokens[count].end = q;
+                count += 1;
+            }
+        }
+        if (q < end)
+            q += 1;
+
+        p = q;
+    }
+
+    t->count = count;
+    return count;
+}
+
+static Token
+nmea_tokenizer_get( NmeaTokenizer*  t, int  index )
+{
+    Token  tok;
+    static const char*  dummy = "";
+
+    if (index < 0 || index >= t->count) {
+        tok.p = tok.end = dummy;
+    } else
+        tok = t->tokens[index];
+
+    return tok;
+}
+
+
+static int
+str2int( const char*  p, const char*  end )
+{
+    int   result = 0;
+    int   len    = end - p;
+
+    for ( ; len > 0; len--, p++ )
+    {
+        int  c;
+
+        if (p >= end)
+            goto Fail;
+
+        c = *p - '0';
+        if ((unsigned)c >= 10)
+            goto Fail;
+
+        result = result*10 + c;
+    }
+    return  result;
+
+Fail:
+    return -1;
+}
+
+static double
+str2float( const char*  p, const char*  end )
+{
+    int   result = 0;
+    int   len    = end - p;
+    char  temp[16];
+
+    if (len >= (int)sizeof(temp))
+        return 0.;
+
+    memcpy( temp, p, len );
+    temp[len] = 0;
+    return strtod( temp, NULL );
+}
+
+/*****************************************************************/
+/*****************************************************************/
+/*****                                                       *****/
+/*****       N M E A   P A R S E R                           *****/
+/*****                                                       *****/
+/*****************************************************************/
+/*****************************************************************/
+
+#define  NMEA_MAX_SIZE  83
+
+typedef struct {
+    int     pos;
+    int     overflow;
+    int     utc_year;
+    int     utc_mon;
+    int     utc_day;
+    int     utc_diff;
+    GpsLocation  fix;
+    gps_location_callback  callback;
+    char    in[ NMEA_MAX_SIZE+1 ];
+} NmeaReader;
+
+
+static void
+nmea_reader_update_utc_diff( NmeaReader*  r )
+{
+    time_t         now = time(NULL);
+    struct tm      tm_local;
+    struct tm      tm_utc;
+    long           time_local, time_utc;
+
+    gmtime_r( &now, &tm_utc );
+    localtime_r( &now, &tm_local );
+
+    time_local = tm_local.tm_sec +
+                 60*(tm_local.tm_min +
+                 60*(tm_local.tm_hour +
+                 24*(tm_local.tm_yday +
+                 365*tm_local.tm_year)));
+
+    time_utc = tm_utc.tm_sec +
+               60*(tm_utc.tm_min +
+               60*(tm_utc.tm_hour +
+               24*(tm_utc.tm_yday +
+               365*tm_utc.tm_year)));
+
+    r->utc_diff = time_utc - time_local;
+}
+
+
+static void
+nmea_reader_init( NmeaReader*  r )
+{
+    memset( r, 0, sizeof(*r) );
+
+    r->pos      = 0;
+    r->overflow = 0;
+    r->utc_year = -1;
+    r->utc_mon  = -1;
+    r->utc_day  = -1;
+    r->callback = NULL;
+
+    nmea_reader_update_utc_diff( r );
+}
+
+
+static void
+nmea_reader_set_callback( NmeaReader*  r, gps_location_callback  cb )
+{
+    r->callback = cb;
+    if (cb != NULL && r->fix.flags != 0) {
+        D("%s: sending latest fix to new callback", __FUNCTION__);
+        r->callback( &r->fix );
+        r->fix.flags = 0;
+    }
+}
+
+
+static int
+nmea_reader_update_time( NmeaReader*  r, Token  tok )
+{
+    int        hour, minute;
+    double     seconds;
+    struct tm  tm;
+    time_t     fix_time;
+
+    if (tok.p + 6 > tok.end)
+        return -1;
+
+    if (r->utc_year < 0) {
+        // no date yet, get current one
+        time_t  now = time(NULL);
+        gmtime_r( &now, &tm );
+        r->utc_year = tm.tm_year + 1900;
+        r->utc_mon  = tm.tm_mon + 1;
+        r->utc_day  = tm.tm_mday;
+    }
+
+    hour    = str2int(tok.p,   tok.p+2);
+    minute  = str2int(tok.p+2, tok.p+4);
+    seconds = str2float(tok.p+4, tok.end);
+
+    tm.tm_hour = hour;
+    tm.tm_min  = minute;
+    tm.tm_sec  = (int) seconds;
+    tm.tm_year = r->utc_year - 1900;
+    tm.tm_mon  = r->utc_mon - 1;
+    tm.tm_mday = r->utc_day;
+
+    fix_time = mktime( &tm ) + r->utc_diff;
+    r->fix.timestamp = (long long)fix_time * 1000;
+    return 0;
+}
+
+static int
+nmea_reader_update_date( NmeaReader*  r, Token  date, Token  time )
+{
+    Token  tok = date;
+    int    day, mon, year;
+
+    if (tok.p + 6 != tok.end) {
+        D("date not properly formatted: '%.*s'", tok.end-tok.p, tok.p);
+        return -1;
+    }
+    day  = str2int(tok.p, tok.p+2);
+    mon  = str2int(tok.p+2, tok.p+4);
+    year = str2int(tok.p+4, tok.p+6) + 2000;
+
+    if ((day|mon|year) < 0) {
+        D("date not properly formatted: '%.*s'", tok.end-tok.p, tok.p);
+        return -1;
+    }
+
+    r->utc_year  = year;
+    r->utc_mon   = mon;
+    r->utc_day   = day;
+
+    return nmea_reader_update_time( r, time );
+}
+
+
+static double
+convert_from_hhmm( Token  tok )
+{
+    double  val     = str2float(tok.p, tok.end);
+    int     degrees = (int)(floor(val) / 100);
+    double  minutes = val - degrees*100.;
+    double  dcoord  = degrees + minutes / 60.0;
+    return dcoord;
+}
+
+
+static int
+nmea_reader_update_latlong( NmeaReader*  r,
+                            Token        latitude,
+                            char         latitudeHemi,
+                            Token        longitude,
+                            char         longitudeHemi )
+{
+    double   lat, lon;
+    Token    tok;
+
+    tok = latitude;
+    if (tok.p + 6 > tok.end) {
+        D("latitude is too short: '%.*s'", tok.end-tok.p, tok.p);
+        return -1;
+    }
+    lat = convert_from_hhmm(tok);
+    if (latitudeHemi == 'S')
+        lat = -lat;
+
+    tok = longitude;
+    if (tok.p + 6 > tok.end) {
+        D("longitude is too short: '%.*s'", tok.end-tok.p, tok.p);
+        return -1;
+    }
+    lon = convert_from_hhmm(tok);
+    if (longitudeHemi == 'W')
+        lon = -lon;
+
+    r->fix.flags    |= GPS_LOCATION_HAS_LAT_LONG;
+    r->fix.latitude  = lat;
+    r->fix.longitude = lon;
+    return 0;
+}
+
+
+static int
+nmea_reader_update_altitude( NmeaReader*  r,
+                             Token        altitude,
+                             Token        units )
+{
+    double  alt;
+    Token   tok = altitude;
+
+    if (tok.p >= tok.end)
+        return -1;
+
+    r->fix.flags   |= GPS_LOCATION_HAS_ALTITUDE;
+    r->fix.altitude = str2float(tok.p, tok.end);
+    return 0;
+}
+
+
+static int
+nmea_reader_update_bearing( NmeaReader*  r,
+                            Token        bearing )
+{
+    double  alt;
+    Token   tok = bearing;
+
+    if (tok.p >= tok.end)
+        return -1;
+
+    r->fix.flags   |= GPS_LOCATION_HAS_BEARING;
+    r->fix.bearing  = str2float(tok.p, tok.end);
+    return 0;
+}
+
+
+static int
+nmea_reader_update_speed( NmeaReader*  r,
+                          Token        speed )
+{
+    double  alt;
+    Token   tok = speed;
+
+    if (tok.p >= tok.end)
+        return -1;
+
+    r->fix.flags   |= GPS_LOCATION_HAS_SPEED;
+    r->fix.speed    = str2float(tok.p, tok.end);
+    return 0;
+}
+
+
+static void
+nmea_reader_parse( NmeaReader*  r )
+{
+   /* we received a complete sentence, now parse it to generate
+    * a new GPS fix...
+    */
+    NmeaTokenizer  tzer[1];
+    Token          tok;
+
+    D("Received: '%.*s'", r->pos, r->in);
+    if (r->pos < 9) {
+        D("Too short. discarded.");
+        return;
+    }
+
+    nmea_tokenizer_init(tzer, r->in, r->in + r->pos);
+#if GPS_DEBUG
+    {
+        int  n;
+        D("Found %d tokens", tzer->count);
+        for (n = 0; n < tzer->count; n++) {
+            Token  tok = nmea_tokenizer_get(tzer,n);
+            D("%2d: '%.*s'", n, tok.end-tok.p, tok.p);
+        }
+    }
+#endif
+
+    tok = nmea_tokenizer_get(tzer, 0);
+    if (tok.p + 5 > tok.end) {
+        D("sentence id '%.*s' too short, ignored.", tok.end-tok.p, tok.p);
+        return;
+    }
+
+    // ignore first two characters.
+    tok.p += 2;
+    if ( !memcmp(tok.p, "GGA", 3) ) {
+        // GPS fix
+        Token  tok_time          = nmea_tokenizer_get(tzer,1);
+        Token  tok_latitude      = nmea_tokenizer_get(tzer,2);
+        Token  tok_latitudeHemi  = nmea_tokenizer_get(tzer,3);
+        Token  tok_longitude     = nmea_tokenizer_get(tzer,4);
+        Token  tok_longitudeHemi = nmea_tokenizer_get(tzer,5);
+        Token  tok_altitude      = nmea_tokenizer_get(tzer,9);
+        Token  tok_altitudeUnits = nmea_tokenizer_get(tzer,10);
+
+        nmea_reader_update_time(r, tok_time);
+        nmea_reader_update_latlong(r, tok_latitude,
+                                      tok_latitudeHemi.p[0],
+                                      tok_longitude,
+                                      tok_longitudeHemi.p[0]);
+        nmea_reader_update_altitude(r, tok_altitude, tok_altitudeUnits);
+
+    } else if ( !memcmp(tok.p, "GSA", 3) ) {
+        // do something ?
+    } else if ( !memcmp(tok.p, "RMC", 3) ) {
+        Token  tok_time          = nmea_tokenizer_get(tzer,1);
+        Token  tok_fixStatus     = nmea_tokenizer_get(tzer,2);
+        Token  tok_latitude      = nmea_tokenizer_get(tzer,3);
+        Token  tok_latitudeHemi  = nmea_tokenizer_get(tzer,4);
+        Token  tok_longitude     = nmea_tokenizer_get(tzer,5);
+        Token  tok_longitudeHemi = nmea_tokenizer_get(tzer,6);
+        Token  tok_speed         = nmea_tokenizer_get(tzer,7);
+        Token  tok_bearing       = nmea_tokenizer_get(tzer,8);
+        Token  tok_date          = nmea_tokenizer_get(tzer,9);
+
+        D("in RMC, fixStatus=%c", tok_fixStatus.p[0]);
+        if (tok_fixStatus.p[0] == 'A')
+        {
+            nmea_reader_update_date( r, tok_date, tok_time );
+
+            nmea_reader_update_latlong( r, tok_latitude,
+                                           tok_latitudeHemi.p[0],
+                                           tok_longitude,
+                                           tok_longitudeHemi.p[0] );
+
+            nmea_reader_update_bearing( r, tok_bearing );
+            nmea_reader_update_speed  ( r, tok_speed );
+        }
+    } else {
+        tok.p -= 2;
+        D("unknown sentence '%.*s", tok.end-tok.p, tok.p);
+    }
+    if (r->fix.flags != 0) {
+#if GPS_DEBUG
+        char   temp[256];
+        char*  p   = temp;
+        char*  end = p + sizeof(temp);
+        struct tm   utc;
+
+        p += snprintf( p, end-p, "sending fix" );
+        if (r->fix.flags & GPS_LOCATION_HAS_LAT_LONG) {
+            p += snprintf(p, end-p, " lat=%g lon=%g", r->fix.latitude, r->fix.longitude);
+        }
+        if (r->fix.flags & GPS_LOCATION_HAS_ALTITUDE) {
+            p += snprintf(p, end-p, " altitude=%g", r->fix.altitude);
+        }
+        if (r->fix.flags & GPS_LOCATION_HAS_SPEED) {
+            p += snprintf(p, end-p, " speed=%g", r->fix.speed);
+        }
+        if (r->fix.flags & GPS_LOCATION_HAS_BEARING) {
+            p += snprintf(p, end-p, " bearing=%g", r->fix.bearing);
+        }
+        if (r->fix.flags & GPS_LOCATION_HAS_ACCURACY) {
+            p += snprintf(p,end-p, " accuracy=%g", r->fix.accuracy);
+        }
+        gmtime_r( (time_t*) &r->fix.timestamp, &utc );
+        p += snprintf(p, end-p, " time=%s", asctime( &utc ) );
+        D(temp);
+#endif
+        if (r->callback) {
+            r->callback( &r->fix );
+            r->fix.flags = 0;
+        }
+        else {
+            D("no callback, keeping data until needed !");
+        }
+    }
+}
+
+
+static void
+nmea_reader_addc( NmeaReader*  r, int  c )
+{
+    if (r->overflow) {
+        r->overflow = (c != '\n');
+        return;
+    }
+
+    if (r->pos >= (int) sizeof(r->in)-1 ) {
+        r->overflow = 1;
+        r->pos      = 0;
+        return;
+    }
+
+    r->in[r->pos] = (char)c;
+    r->pos       += 1;
+
+    if (c == '\n') {
+        nmea_reader_parse( r );
+        r->pos = 0;
+    }
+}
+
+
+/*****************************************************************/
+/*****************************************************************/
+/*****                                                       *****/
+/*****       C O N N E C T I O N   S T A T E                 *****/
+/*****                                                       *****/
+/*****************************************************************/
+/*****************************************************************/
+
+/* commands sent to the gps thread */
+enum {
+    CMD_QUIT  = 0,
+    CMD_START = 1,
+    CMD_STOP  = 2
+};
+
+
+/* this is the state of our connection to the qemu_gpsd daemon */
+typedef struct {
+    int                     init;
+    int                     fd;
+    GpsCallbacks            callbacks;
+    pthread_t               thread;
+    int                     control[2];
+
+} GpsState;
+
+static GpsState  _gps_state[1];
+
+
+static void
+gps_state_done( GpsState*  s )
+{
+    // tell the thread to quit, and wait for it
+    char   cmd = CMD_QUIT;
+    void*  dummy;
+    write( s->control[0], &cmd, 1 );
+    pthread_join(s->thread, &dummy);
+
+    // close the control socket pair
+    close( s->control[0] ); s->control[0] = -1;
+    close( s->control[1] ); s->control[1] = -1;
+
+    // close connection to the QEMU GPS daemon
+    close( s->fd ); s->fd = -1;
+    s->init = 0;
+}
+
+
+static void
+gps_state_start( GpsState*  s )
+{
+    char  cmd = CMD_START;
+    int   ret;
+
+    do { ret=write( s->control[0], &cmd, 1 ); }
+    while (ret < 0 && errno == EINTR);
+
+    if (ret != 1)
+        D("%s: could not send CMD_START command: ret=%d: %s",
+          __FUNCTION__, ret, strerror(errno));
+}
+
+
+static void
+gps_state_stop( GpsState*  s )
+{
+    char  cmd = CMD_STOP;
+    int   ret;
+
+    do { ret=write( s->control[0], &cmd, 1 ); }
+    while (ret < 0 && errno == EINTR);
+
+    if (ret != 1)
+        D("%s: could not send CMD_STOP command: ret=%d: %s",
+          __FUNCTION__, ret, strerror(errno));
+}
+
+
+static int
+epoll_register( int  epoll_fd, int  fd )
+{
+    struct epoll_event  ev;
+    int                 ret, flags;
+
+    /* important: make the fd non-blocking */
+    flags = fcntl(fd, F_GETFL);
+    fcntl(fd, F_SETFL, flags | O_NONBLOCK);
+
+    ev.events  = EPOLLIN;
+    ev.data.fd = fd;
+    do {
+        ret = epoll_ctl( epoll_fd, EPOLL_CTL_ADD, fd, &ev );
+    } while (ret < 0 && errno == EINTR);
+    return ret;
+}
+
+
+static int
+epoll_deregister( int  epoll_fd, int  fd )
+{
+    int  ret;
+    do {
+        ret = epoll_ctl( epoll_fd, EPOLL_CTL_DEL, fd, NULL );
+    } while (ret < 0 && errno == EINTR);
+    return ret;
+}
+
+/* this is the main thread, it waits for commands from gps_state_start/stop and,
+ * when started, messages from the QEMU GPS daemon. these are simple NMEA sentences
+ * that must be parsed to be converted into GPS fixes sent to the framework
+ */
+static void*
+gps_state_thread( void*  arg )
+{
+    GpsState*   state = (GpsState*) arg;
+    NmeaReader  reader[1];
+    int         epoll_fd   = epoll_create(2);
+    int         started    = 0;
+    int         gps_fd     = state->fd;
+    int         control_fd = state->control[1];
+
+    nmea_reader_init( reader );
+
+    // register control file descriptors for polling
+    epoll_register( epoll_fd, control_fd );
+    epoll_register( epoll_fd, gps_fd );
+
+    D("gps thread running");
+
+    // now loop
+    for (;;) {
+        struct epoll_event   events[2];
+        int                  ne, nevents;
+
+        nevents = epoll_wait( epoll_fd, events, 2, -1 );
+        if (nevents < 0) {
+            if (errno != EINTR)
+                LOGE("epoll_wait() unexpected error: %s", strerror(errno));
+            continue;
+        }
+        D("gps thread received %d events", nevents);
+        for (ne = 0; ne < nevents; ne++) {
+            if ((events[ne].events & (EPOLLERR|EPOLLHUP)) != 0) {
+                LOGE("EPOLLERR or EPOLLHUP after epoll_wait() !?");
+                goto Exit;
+            }
+            if ((events[ne].events & EPOLLIN) != 0) {
+                int  fd = events[ne].data.fd;
+
+                if (fd == control_fd)
+                {
+                    char  cmd = 255;
+                    int   ret;
+                    D("gps control fd event");
+                    do {
+                        ret = read( fd, &cmd, 1 );
+                    } while (ret < 0 && errno == EINTR);
+
+                    if (cmd == CMD_QUIT) {
+                        D("gps thread quitting on demand");
+                        goto Exit;
+                    }
+                    else if (cmd == CMD_START) {
+                        if (!started) {
+                            D("gps thread starting  location_cb=%p", state->callbacks.location_cb);
+                            started = 1;
+                            nmea_reader_set_callback( reader, state->callbacks.location_cb );
+                        }
+                    }
+                    else if (cmd == CMD_STOP) {
+                        if (started) {
+                            D("gps thread stopping");
+                            started = 0;
+                            nmea_reader_set_callback( reader, NULL );
+                        }
+                    }
+                }
+                else if (fd == gps_fd)
+                {
+                    char  buff[32];
+                    D("gps fd event");
+                    for (;;) {
+                        int  nn, ret;
+
+                        ret = read( fd, buff, sizeof(buff) );
+                        if (ret < 0) {
+                            if (errno == EINTR)
+                                continue;
+                            if (errno != EWOULDBLOCK)
+                                LOGE("error while reading from gps daemon socket: %s:", strerror(errno));
+                            break;
+                        }
+                        D("received %d bytes: %.*s", ret, ret, buff);
+                        for (nn = 0; nn < ret; nn++)
+                            nmea_reader_addc( reader, buff[nn] );
+                    }
+                    D("gps fd event end");
+                }
+                else
+                {
+                    LOGE("epoll_wait() returned unkown fd %d ?", fd);
+                }
+            }
+        }
+    }
+Exit:
+    return NULL;
+}
+
+
+static void
+gps_state_init( GpsState*  state )
+{
+    char   prop[PROPERTY_VALUE_MAX];
+    char   device[256];
+    int    ret;
+    int    done = 0;
+
+    state->init       = 1;
+    state->control[0] = -1;
+    state->control[1] = -1;
+    state->fd         = -1;
+
+    // try to connect to the qemud socket
+    do {
+        state->fd = socket_local_client( QEMUD_SOCKET_NAME,
+                                         ANDROID_SOCKET_NAMESPACE_RESERVED,
+                                         SOCK_STREAM );
+        if (state->fd < 0) {
+            D("no '%s' control socket available: %s", QEMUD_SOCKET_NAME, strerror(errno));
+            break;
+        }
+        snprintf( device, sizeof(device), "/dev/socket/%s", QEMUD_SOCKET_NAME );
+        done = 1;
+
+    } while (0);
+
+    // otherwise, look for a kernel-provided device name
+    if (!done) do {
+        if (property_get("ro.kernel.android.gps",prop,"") == 0) {
+            D("no kernel-provided gps device name");
+            break;
+        }
+        if ( snprintf(device, sizeof(device), "/dev/%s", prop) >= (int)sizeof(device) ) {
+            LOGE("gps serial device name too long: '%s'", prop);
+            break;
+        }
+
+        do {
+            state->fd = open( device, O_RDWR );
+        } while (state->fd < 0 && errno == EINTR);
+
+        if (state->fd < 0) {
+            LOGE("could not open gps serial device %s: %s", device, strerror(errno) );
+            break;
+        }
+        done = 1;
+
+    } while (0);
+
+    if (!done) {
+        D("no gps emulation detected");
+        return;
+    }
+
+    D("gps emulation will read from %s", device);
+
+    // disable echo on serial lines
+    if ( !memcmp( device, "/dev/ttyS", 9 ) ) {
+        struct termios  ios;
+        tcgetattr( state->fd, &ios );
+        ios.c_lflag = 0;  /* disable ECHO, ICANON, etc... */
+        tcsetattr( state->fd, TCSANOW, &ios );
+    }
+
+    if ( socketpair( AF_LOCAL, SOCK_STREAM, 0, state->control ) < 0 ) {
+        LOGE("could not create thread control socket pair: %s", strerror(errno));
+        goto Fail;
+    }
+
+    if ( pthread_create( &state->thread, NULL, gps_state_thread, state ) != 0 ) {
+        LOGE("could not create gps thread: %s", strerror(errno));
+        goto Fail;
+    }
+
+    D("gps state initialized");
+    return;
+
+Fail:
+    gps_state_done( state );
+}
+
+
+/*****************************************************************/
+/*****************************************************************/
+/*****                                                       *****/
+/*****       I N T E R F A C E                               *****/
+/*****                                                       *****/
+/*****************************************************************/
+/*****************************************************************/
+
+
+static int
+qemu_gps_init(GpsCallbacks* callbacks)
+{
+    GpsState*  s = _gps_state;
+
+    if (!s->init)
+        gps_state_init(s);
+
+    if (s->fd < 0)
+        return -1;
+
+    s->callbacks = *callbacks;
+
+    return 0;
+}
+
+static void
+qemu_gps_cleanup(void)
+{
+    GpsState*  s = _gps_state;
+
+    if (s->init)
+        gps_state_done(s);
+}
+
+
+static int
+qemu_gps_start()
+{
+    GpsState*  s = _gps_state;
+
+    if (!s->init) {
+        D("%s: called with uninitialized state !!", __FUNCTION__);
+        return -1;
+    }
+
+    D("%s: called", __FUNCTION__);
+    gps_state_start(s);
+    return 0;
+}
+
+
+static int
+qemu_gps_stop()
+{
+    GpsState*  s = _gps_state;
+
+    if (!s->init) {
+        D("%s: called with uninitialized state !!", __FUNCTION__);
+        return -1;
+    }
+
+    D("%s: called", __FUNCTION__);
+    gps_state_stop(s);
+    return 0;
+}
+
+
+static void
+qemu_gps_set_fix_frequency()
+{
+    GpsState*  s = _gps_state;
+
+    if (!s->init) {
+        D("%s: called with uninitialized state !!", __FUNCTION__);
+        return -1;
+    }
+
+    D("%s: called", __FUNCTION__);
+    // FIXME - support fix_frequency
+}
+
+static int
+qemu_gps_inject_time(GpsUtcTime time, int64_t timeReference, int uncertainty)
+{
+    return 0;
+}
+
+static void
+qemu_gps_delete_aiding_data(GpsAidingData flags)
+{
+}
+
+static int qemu_gps_set_position_mode(GpsPositionMode mode, int fix_frequency)
+{
+    // FIXME - support fix_frequency
+    // only standalone supported for now.
+    if (mode != GPS_POSITION_MODE_STANDALONE)
+        return -1;
+    return 0;
+}
+
+static const void*
+qemu_gps_get_extension(const char* name)
+{
+    return NULL;
+}
+
+static const GpsInterface  qemuGpsInterface = {
+    qemu_gps_init,
+    qemu_gps_start,
+    qemu_gps_stop,
+    qemu_gps_set_fix_frequency,
+    qemu_gps_cleanup,
+    qemu_gps_inject_time,
+    qemu_gps_delete_aiding_data,
+    qemu_gps_set_position_mode,
+    qemu_gps_get_extension,
+};
+
+const GpsInterface* gps_get_qemu_interface()
+{
+    return &qemuGpsInterface;
+}
+