The parameters for tcg_gen_insn_start are target_ulong, which may be split
into two TCGArg parameters for storage in the opcode on 32-bit hosts.

Fixes the ARM target and its direct use of tcg_set_insn_param, which would
set the wrong argument in the 64-on-32 case.

Cc: qemu-stable@nongnu.org
Reported-by:  <alarson@ddci.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180410003558.2470-1-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>