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.
#define exec_op glue(exec_, OP)
#define exec_opq glue(glue(exec_, OP), q)
#define exec_opl glue(glue(exec_, OP), l)
#define exec_opw glue(glue(exec_, OP), w)
#define exec_opb glue(glue(exec_, OP), b)
#ifndef OP_SHIFTD
#ifdef OP_NOBYTE
#define EXECSHIFT(size, rsize, res, s1, s2, flags) \
asm ("push %4\n\t"\
"popf\n\t"\
stringify(OP) size " %" rsize "2, %" rsize "0\n\t" \
"pushf\n\t"\
"pop %1\n\t"\
: "=g" (res), "=g" (flags)\
: "r" (s1), "0" (res), "1" (flags));
#else
#define EXECSHIFT(size, rsize, res, s1, s2, flags) \
asm ("push %4\n\t"\
"popf\n\t"\
stringify(OP) size " %%cl, %" rsize "0\n\t" \
"pushf\n\t"\
"pop %1\n\t"\
: "=q" (res), "=g" (flags)\
: "c" (s1), "0" (res), "1" (flags));
#endif
#if defined(__x86_64__)
void exec_opq(long s2, long s0, long s1, long iflags)
{
long res, flags;
res = s0;
flags = iflags;
EXECSHIFT("q", "", res, s1, s2, flags);
/* overflow is undefined if count != 1 */
if (s1 != 1)
flags &= ~CC_O;
printf("%-10s A=" FMTLX " B=" FMTLX " R=" FMTLX " CCIN=%04lx CC=%04lx\n",
stringify(OP) "q", s0, s1, res, iflags, flags & CC_MASK);
}
#endif
void exec_opl(long s2, long s0, long s1, long iflags)
{
long res, flags;
res = s0;
flags = iflags;
EXECSHIFT("l", "k", res, s1, s2, flags);
/* overflow is undefined if count != 1 */
if (s1 != 1)
flags &= ~CC_O;
printf("%-10s A=" FMTLX " B=" FMTLX " R=" FMTLX " CCIN=%04lx CC=%04lx\n",
stringify(OP) "l", s0, s1, res, iflags, flags & CC_MASK);
}
void exec_opw(long s2, long s0, long s1, long iflags)
{
long res, flags;
res = s0;
flags = iflags;
EXECSHIFT("w", "w", res, s1, s2, flags);
/* overflow is undefined if count != 1 */
if (s1 != 1)
flags &= ~CC_O;
printf("%-10s A=" FMTLX " B=" FMTLX " R=" FMTLX " CCIN=%04lx CC=%04lx\n",
stringify(OP) "w", s0, s1, res, iflags, flags & CC_MASK);
}
#else
#define EXECSHIFT(size, rsize, res, s1, s2, flags) \
asm ("push %4\n\t"\
"popf\n\t"\
stringify(OP) size " %%cl, %" rsize "5, %" rsize "0\n\t" \
"pushf\n\t"\
"pop %1\n\t"\
: "=g" (res), "=g" (flags)\
: "c" (s1), "0" (res), "1" (flags), "r" (s2));
#if defined(__x86_64__)
void exec_opq(long s2, long s0, long s1, long iflags)
{
long res, flags;
res = s0;
flags = iflags;
EXECSHIFT("q", "", res, s1, s2, flags);
/* overflow is undefined if count != 1 */
if (s1 != 1)
flags &= ~CC_O;
printf("%-10s A=" FMTLX " B=" FMTLX " C=" FMTLX " R=" FMTLX " CCIN=%04lx CC=%04lx\n",
stringify(OP) "q", s0, s2, s1, res, iflags, flags & CC_MASK);
}
#endif
void exec_opl(long s2, long s0, long s1, long iflags)
{
long res, flags;
res = s0;
flags = iflags;
EXECSHIFT("l", "k", res, s1, s2, flags);
/* overflow is undefined if count != 1 */
if (s1 != 1)
flags &= ~CC_O;
printf("%-10s A=" FMTLX " B=" FMTLX " C=" FMTLX " R=" FMTLX " CCIN=%04lx CC=%04lx\n",
stringify(OP) "l", s0, s2, s1, res, iflags, flags & CC_MASK);
}
void exec_opw(long s2, long s0, long s1, long iflags)
{
long res, flags;
res = s0;
flags = iflags;
EXECSHIFT("w", "w", res, s1, s2, flags);
/* overflow is undefined if count != 1 */
if (s1 != 1)
flags &= ~CC_O;
printf("%-10s A=" FMTLX " B=" FMTLX " C=" FMTLX " R=" FMTLX " CCIN=%04lx CC=%04lx\n",
stringify(OP) "w", s0, s2, s1, res, iflags, flags & CC_MASK);
}
#endif
#ifndef OP_NOBYTE
void exec_opb(long s0, long s1, long iflags)
{
long res, flags;
res = s0;
flags = iflags;
EXECSHIFT("b", "b", res, s1, 0, flags);
/* overflow is undefined if count != 1 */
if (s1 != 1)
flags &= ~CC_O;
printf("%-10s A=" FMTLX " B=" FMTLX " R=" FMTLX " CCIN=%04lx CC=%04lx\n",
stringify(OP) "b", s0, s1, res, iflags, flags & CC_MASK);
}
#endif
void exec_op(long s2, long s0, long s1)
{
s2 = i2l(s2);
s0 = i2l(s0);
#if defined(__x86_64__)
exec_opq(s2, s0, s1, 0);
#endif
exec_opl(s2, s0, s1, 0);
#ifdef OP_SHIFTD
exec_opw(s2, s0, s1, 0);
#else
exec_opw(s2, s0, s1, 0);
#endif
#ifndef OP_NOBYTE
exec_opb(s0, s1, 0);
#endif
#ifdef OP_CC
#if defined(__x86_64__)
exec_opq(s2, s0, s1, CC_C);
#endif
exec_opl(s2, s0, s1, CC_C);
exec_opw(s2, s0, s1, CC_C);
exec_opb(s0, s1, CC_C);
#endif
}
void glue(test_, OP)(void)
{
int i, n;
#if defined(__x86_64__)
n = 64;
#else
n = 32;
#endif
for(i = 0; i < n; i++)
exec_op(0x21ad3d34, 0x12345678, i);
for(i = 0; i < n; i++)
exec_op(0x813f3421, 0x82345679, i);
}
void *glue(_test_, OP) __init_call = glue(test_, OP);
#undef OP
#undef OP_CC
#undef OP_SHIFTD
#undef OP_NOBYTE
#undef EXECSHIFT