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.
static char *tst_cc_loc = NULL;
#define cris_tst_cc_init() \
do { tst_cc_loc = "test_cc failed at " CURRENT_LOCATION; } while(0)
/* We need a real symbol to signal error. */
void _err(void) {
if (!tst_cc_loc)
tst_cc_loc = "tst_cc_failed\n";
_fail(tst_cc_loc);
}
extern inline void cris_tst_cc_n1(void)
{
asm volatile ("bpl _err\n"
"nop\n");
}
extern inline void cris_tst_cc_n0(void)
{
asm volatile ("bmi _err\n"
"nop\n");
}
extern inline void cris_tst_cc_z1(void)
{
asm volatile ("bne _err\n"
"nop\n");
}
extern inline void cris_tst_cc_z0(void)
{
asm volatile ("beq _err\n"
"nop\n");
}
extern inline void cris_tst_cc_v1(void)
{
asm volatile ("bvc _err\n"
"nop\n");
}
extern inline void cris_tst_cc_v0(void)
{
asm volatile ("bvs _err\n"
"nop\n");
}
extern inline void cris_tst_cc_c1(void)
{
asm volatile ("bcc _err\n"
"nop\n");
}
extern inline void cris_tst_cc_c0(void)
{
asm volatile ("bcs _err\n"
"nop\n");
}
extern inline void cris_tst_mov_cc(int n, int z)
{
if (n) cris_tst_cc_n1(); else cris_tst_cc_n0();
if (z) cris_tst_cc_z1(); else cris_tst_cc_z0();
asm volatile ("" : : "g" (_err));
}
extern inline void cris_tst_cc(const int n, const int z,
const int v, const int c)
{
if (n) cris_tst_cc_n1(); else cris_tst_cc_n0();
if (z) cris_tst_cc_z1(); else cris_tst_cc_z0();
if (v) cris_tst_cc_v1(); else cris_tst_cc_v0();
if (c) cris_tst_cc_c1(); else cris_tst_cc_c0();
asm volatile ("" : : "g" (_err));
}