linux-user/elfload: Introduce MIPS GET_FEATURE_REG_SET() macro
ISA features are usually denoted in read-only bits from
CPU registers. Add the GET_FEATURE_REG_SET() macro which
checks if a CPU register has bits set.
Use the macro to check for MSA (which sets the MSAP bit of
the Config3 register when the ASE implementation is present).
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <
20201214003215.344522-4-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>