Fix for Bug 3671 - QEMU GDB stub listens on IPv6-only port on Windows 7
The connection string used by the GDB stub does not specify which
version of the Internet Protocol should be used by the port on
which it listens. On host platforms with IPv6 support, such as
Windows 7, this means that the stub listens on an IPv6-only port.
Since the GDB client uses IPv4, this means that the client cannot
connect to QEMU.
import qemu
class syborg_timer(qemu.devclass):
REG_ID = 0
REG_LATCH = 1
REG_DATA_LOW = 2
REG_DATA_HIGH = 3
def create(self):
self.data = 0
self.offset = qemu.start_time() * 1000000 - qemu.get_clock()
def read_reg(self, offset):
offset >>= 2
if offset == self.REG_ID:
return 0xc51d0004
elif offset == self.REG_DATA_LOW:
return self.data & 0xffffffff
elif offset == self.REG_DATA_HIGH:
return (self.data >> 32) & 0xffffffff
return 0
def write_reg(self, offset, value):
offset >>= 2
if offset == self.REG_LATCH:
now = qemu.get_clock()
if value >= 4:
self.offset = self.data - now
else:
self.data = now + self.offset
while value:
self.data /= 1000
value -= 1;
elif offset == self.REG_DATA_LOW:
self.data = (self.data & ~0xffffffff) | value
elif offset == self.REG_DATA_HIGH:
self.data = (self.data & 0xffffffff) | (value << 32)
def save(self, f):
f.put_s64(self.offset)
f.put_u64(self.data)
def load(self, f):
self.offset = f.get_s64()
self.data = f.get_u64()
# Device class properties
regions = [qemu.ioregion(0x1000, readl=read_reg, writel=write_reg)]
irqs = 0
name = "syborg,rtc"
properties = {}
qemu.register_device(syborg_timer)