tests/tcg: better detect confused gdb which can't connect
While we may gamely give the right information it can still confuse
the wide range of GDBs out there. For example ppc64abi32-linux-user
reports:
warning: Selected architecture powerpc:common is not compatible with reported target architecture powerpc:common64
warning: Architecture rejected target-supplied description
but still connects. Add a test for a 0 pc and exit early if that is
the case. This may actually be a bug we need to fix?
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <
20200520140541.30256-8-alex.bennee@linaro.org>