Commit ea937ded authored by Richard Henderson's avatar Richard Henderson Committed by Alex Bennée
Browse files

target/alpha: Use array for FPCR_DYN conversion 



This is a bit more straight-forward than using a switch statement.
No functional change.

Signed-off-by: default avatarRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: default avatarAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190921043256.4575-2-richard.henderson@linaro.org>
parent eb13d1cf

target/alpha/helper.c

+8 −16
Original line number Diff line number Diff line
@@ -36,6 +36,13 @@ uint64_t cpu_alpha_load_fpcr(CPUAlphaState *env) 


void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val)

{

    static const uint8_t rm_map[] = {

        [FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT] = float_round_nearest_even,

        [FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT] = float_round_to_zero,

        [FPCR_DYN_MINUS >> FPCR_DYN_SHIFT] = float_round_down,

        [FPCR_DYN_PLUS >> FPCR_DYN_SHIFT] = float_round_up,

    };



    uint32_t fpcr = val >> 32;

    uint32_t t = 0;
@@ -48,22 +55,7 @@ void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val) 
    env->fpcr = fpcr;

    env->fpcr_exc_enable = ~t & FPCR_STATUS_MASK;



    switch (fpcr & FPCR_DYN_MASK) {

    case FPCR_DYN_NORMAL:

    default:

        t = float_round_nearest_even;

        break;

    case FPCR_DYN_CHOPPED:

        t = float_round_to_zero;

        break;

    case FPCR_DYN_MINUS:

        t = float_round_down;

        break;

    case FPCR_DYN_PLUS:

        t = float_round_up;

        break;

    }

    env->fpcr_dyn_round = t;

    env->fpcr_dyn_round = rm_map[(fpcr & FPCR_DYN_MASK) >> FPCR_DYN_SHIFT];



    env->fpcr_flush_to_zero = (fpcr & FPCR_UNFD) && (fpcr & FPCR_UNDZ);

    env->fp_status.flush_inputs_to_zero = (fpcr & FPCR_DNZ) != 0;